1 /* 2 * Linux syscalls 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 #define _ATFILE_SOURCE 20 #include "qemu/osdep.h" 21 #include "qemu/cutils.h" 22 #include "qemu/path.h" 23 #include "qemu/memfd.h" 24 #include "qemu/queue.h" 25 #include "qemu/plugin.h" 26 #include "target_mman.h" 27 #include <elf.h> 28 #include <endian.h> 29 #include <grp.h> 30 #include <sys/ipc.h> 31 #include <sys/msg.h> 32 #include <sys/wait.h> 33 #include <sys/mount.h> 34 #include <sys/file.h> 35 #include <sys/fsuid.h> 36 #include <sys/personality.h> 37 #include <sys/prctl.h> 38 #include <sys/resource.h> 39 #include <sys/swap.h> 40 #include <linux/capability.h> 41 #include <sched.h> 42 #include <sys/timex.h> 43 #include <sys/socket.h> 44 #include <linux/sockios.h> 45 #include <sys/un.h> 46 #include <sys/uio.h> 47 #include <poll.h> 48 #include <sys/times.h> 49 #include <sys/shm.h> 50 #include <sys/sem.h> 51 #include <sys/statfs.h> 52 #include <utime.h> 53 #include <sys/sysinfo.h> 54 #include <sys/signalfd.h> 55 //#include <sys/user.h> 56 #include <netinet/in.h> 57 #include <netinet/ip.h> 58 #include <netinet/tcp.h> 59 #include <netinet/udp.h> 60 #include <linux/wireless.h> 61 #include <linux/icmp.h> 62 #include <linux/icmpv6.h> 63 #include <linux/if_tun.h> 64 #include <linux/in6.h> 65 #include <linux/errqueue.h> 66 #include <linux/random.h> 67 #ifdef CONFIG_TIMERFD 68 #include <sys/timerfd.h> 69 #endif 70 #ifdef CONFIG_EVENTFD 71 #include <sys/eventfd.h> 72 #endif 73 #ifdef CONFIG_EPOLL 74 #include <sys/epoll.h> 75 #endif 76 #ifdef CONFIG_ATTR 77 #include "qemu/xattr.h" 78 #endif 79 #ifdef CONFIG_SENDFILE 80 #include <sys/sendfile.h> 81 #endif 82 #ifdef HAVE_SYS_KCOV_H 83 #include <sys/kcov.h> 84 #endif 85 86 #define termios host_termios 87 #define winsize host_winsize 88 #define termio host_termio 89 #define sgttyb host_sgttyb /* same as target */ 90 #define tchars host_tchars /* same as target */ 91 #define ltchars host_ltchars /* same as target */ 92 93 #include <linux/termios.h> 94 #include <linux/unistd.h> 95 #include <linux/cdrom.h> 96 #include <linux/hdreg.h> 97 #include <linux/soundcard.h> 98 #include <linux/kd.h> 99 #include <linux/mtio.h> 100 #include <linux/fs.h> 101 #include <linux/fd.h> 102 #if defined(CONFIG_FIEMAP) 103 #include <linux/fiemap.h> 104 #endif 105 #include <linux/fb.h> 106 #if defined(CONFIG_USBFS) 107 #include <linux/usbdevice_fs.h> 108 #include <linux/usb/ch9.h> 109 #endif 110 #include <linux/vt.h> 111 #include <linux/dm-ioctl.h> 112 #include <linux/reboot.h> 113 #include <linux/route.h> 114 #include <linux/filter.h> 115 #include <linux/blkpg.h> 116 #include <netpacket/packet.h> 117 #include <linux/netlink.h> 118 #include <linux/if_alg.h> 119 #include <linux/rtc.h> 120 #include <sound/asound.h> 121 #ifdef HAVE_BTRFS_H 122 #include <linux/btrfs.h> 123 #endif 124 #ifdef HAVE_DRM_H 125 #include <libdrm/drm.h> 126 #include <libdrm/i915_drm.h> 127 #endif 128 #include "linux_loop.h" 129 #include "uname.h" 130 131 #include "qemu.h" 132 #include "user-internals.h" 133 #include "strace.h" 134 #include "signal-common.h" 135 #include "loader.h" 136 #include "user-mmap.h" 137 #include "user/safe-syscall.h" 138 #include "qemu/guest-random.h" 139 #include "qemu/selfmap.h" 140 #include "user/syscall-trace.h" 141 #include "special-errno.h" 142 #include "qapi/error.h" 143 #include "fd-trans.h" 144 #include "tcg/tcg.h" 145 #include "cpu_loop-common.h" 146 147 #ifndef CLONE_IO 148 #define CLONE_IO 0x80000000 /* Clone io context */ 149 #endif 150 151 /* We can't directly call the host clone syscall, because this will 152 * badly confuse libc (breaking mutexes, for example). So we must 153 * divide clone flags into: 154 * * flag combinations that look like pthread_create() 155 * * flag combinations that look like fork() 156 * * flags we can implement within QEMU itself 157 * * flags we can't support and will return an error for 158 */ 159 /* For thread creation, all these flags must be present; for 160 * fork, none must be present. 161 */ 162 #define CLONE_THREAD_FLAGS \ 163 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 164 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 165 166 /* These flags are ignored: 167 * CLONE_DETACHED is now ignored by the kernel; 168 * CLONE_IO is just an optimisation hint to the I/O scheduler 169 */ 170 #define CLONE_IGNORED_FLAGS \ 171 (CLONE_DETACHED | CLONE_IO) 172 173 #ifndef CLONE_PIDFD 174 # define CLONE_PIDFD 0x00001000 175 #endif 176 177 /* Flags for fork which we can implement within QEMU itself */ 178 #define CLONE_OPTIONAL_FORK_FLAGS \ 179 (CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_PIDFD | \ 180 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 181 182 /* Flags for thread creation which we can implement within QEMU itself */ 183 #define CLONE_OPTIONAL_THREAD_FLAGS \ 184 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 185 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 186 187 #define CLONE_INVALID_FORK_FLAGS \ 188 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 189 190 #define CLONE_INVALID_THREAD_FLAGS \ 191 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 192 CLONE_IGNORED_FLAGS)) 193 194 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 195 * have almost all been allocated. We cannot support any of 196 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 197 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 198 * The checks against the invalid thread masks above will catch these. 199 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 200 */ 201 202 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 203 * once. This exercises the codepaths for restart. 204 */ 205 //#define DEBUG_ERESTARTSYS 206 207 //#include <linux/msdos_fs.h> 208 #define VFAT_IOCTL_READDIR_BOTH \ 209 _IOC(_IOC_READ, 'r', 1, (sizeof(struct linux_dirent) + 256) * 2) 210 #define VFAT_IOCTL_READDIR_SHORT \ 211 _IOC(_IOC_READ, 'r', 2, (sizeof(struct linux_dirent) + 256) * 2) 212 213 #undef _syscall0 214 #undef _syscall1 215 #undef _syscall2 216 #undef _syscall3 217 #undef _syscall4 218 #undef _syscall5 219 #undef _syscall6 220 221 #define _syscall0(type,name) \ 222 static type name (void) \ 223 { \ 224 return syscall(__NR_##name); \ 225 } 226 227 #define _syscall1(type,name,type1,arg1) \ 228 static type name (type1 arg1) \ 229 { \ 230 return syscall(__NR_##name, arg1); \ 231 } 232 233 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 234 static type name (type1 arg1,type2 arg2) \ 235 { \ 236 return syscall(__NR_##name, arg1, arg2); \ 237 } 238 239 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 240 static type name (type1 arg1,type2 arg2,type3 arg3) \ 241 { \ 242 return syscall(__NR_##name, arg1, arg2, arg3); \ 243 } 244 245 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 246 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 247 { \ 248 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 249 } 250 251 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 252 type5,arg5) \ 253 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 254 { \ 255 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 256 } 257 258 259 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 260 type5,arg5,type6,arg6) \ 261 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 262 type6 arg6) \ 263 { \ 264 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 265 } 266 267 268 #define __NR_sys_uname __NR_uname 269 #define __NR_sys_getcwd1 __NR_getcwd 270 #define __NR_sys_getdents __NR_getdents 271 #define __NR_sys_getdents64 __NR_getdents64 272 #define __NR_sys_getpriority __NR_getpriority 273 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 274 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 275 #define __NR_sys_syslog __NR_syslog 276 #if defined(__NR_futex) 277 # define __NR_sys_futex __NR_futex 278 #endif 279 #if defined(__NR_futex_time64) 280 # define __NR_sys_futex_time64 __NR_futex_time64 281 #endif 282 #define __NR_sys_statx __NR_statx 283 284 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__) 285 #define __NR__llseek __NR_lseek 286 #endif 287 288 /* Newer kernel ports have llseek() instead of _llseek() */ 289 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 290 #define TARGET_NR__llseek TARGET_NR_llseek 291 #endif 292 293 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */ 294 #ifndef TARGET_O_NONBLOCK_MASK 295 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK 296 #endif 297 298 #define __NR_sys_gettid __NR_gettid 299 _syscall0(int, sys_gettid) 300 301 /* For the 64-bit guest on 32-bit host case we must emulate 302 * getdents using getdents64, because otherwise the host 303 * might hand us back more dirent records than we can fit 304 * into the guest buffer after structure format conversion. 305 * Otherwise we emulate getdents with getdents if the host has it. 306 */ 307 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS 308 #define EMULATE_GETDENTS_WITH_GETDENTS 309 #endif 310 311 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS) 312 _syscall3(int, sys_getdents, unsigned int, fd, struct linux_dirent *, dirp, unsigned int, count); 313 #endif 314 #if (defined(TARGET_NR_getdents) && \ 315 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \ 316 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 317 _syscall3(int, sys_getdents64, unsigned int, fd, struct linux_dirent64 *, dirp, unsigned int, count); 318 #endif 319 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 320 _syscall5(int, _llseek, unsigned int, fd, unsigned long, hi, unsigned long, lo, 321 loff_t *, res, unsigned int, wh); 322 #endif 323 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 324 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 325 siginfo_t *, uinfo) 326 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 327 #ifdef __NR_exit_group 328 _syscall1(int,exit_group,int,error_code) 329 #endif 330 #if defined(__NR_close_range) && defined(TARGET_NR_close_range) 331 #define __NR_sys_close_range __NR_close_range 332 _syscall3(int,sys_close_range,int,first,int,last,int,flags) 333 #ifndef CLOSE_RANGE_CLOEXEC 334 #define CLOSE_RANGE_CLOEXEC (1U << 2) 335 #endif 336 #endif 337 #if defined(__NR_futex) 338 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 339 const struct timespec *,timeout,int *,uaddr2,int,val3) 340 #endif 341 #if defined(__NR_futex_time64) 342 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, 343 const struct timespec *,timeout,int *,uaddr2,int,val3) 344 #endif 345 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 346 _syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags); 347 #endif 348 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 349 _syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info, 350 unsigned int, flags); 351 #endif 352 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 353 _syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags); 354 #endif 355 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 356 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 357 unsigned long *, user_mask_ptr); 358 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 359 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 360 unsigned long *, user_mask_ptr); 361 /* sched_attr is not defined in glibc */ 362 struct sched_attr { 363 uint32_t size; 364 uint32_t sched_policy; 365 uint64_t sched_flags; 366 int32_t sched_nice; 367 uint32_t sched_priority; 368 uint64_t sched_runtime; 369 uint64_t sched_deadline; 370 uint64_t sched_period; 371 uint32_t sched_util_min; 372 uint32_t sched_util_max; 373 }; 374 #define __NR_sys_sched_getattr __NR_sched_getattr 375 _syscall4(int, sys_sched_getattr, pid_t, pid, struct sched_attr *, attr, 376 unsigned int, size, unsigned int, flags); 377 #define __NR_sys_sched_setattr __NR_sched_setattr 378 _syscall3(int, sys_sched_setattr, pid_t, pid, struct sched_attr *, attr, 379 unsigned int, flags); 380 #define __NR_sys_sched_getscheduler __NR_sched_getscheduler 381 _syscall1(int, sys_sched_getscheduler, pid_t, pid); 382 #define __NR_sys_sched_setscheduler __NR_sched_setscheduler 383 _syscall3(int, sys_sched_setscheduler, pid_t, pid, int, policy, 384 const struct sched_param *, param); 385 #define __NR_sys_sched_getparam __NR_sched_getparam 386 _syscall2(int, sys_sched_getparam, pid_t, pid, 387 struct sched_param *, param); 388 #define __NR_sys_sched_setparam __NR_sched_setparam 389 _syscall2(int, sys_sched_setparam, pid_t, pid, 390 const struct sched_param *, param); 391 #define __NR_sys_getcpu __NR_getcpu 392 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); 393 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 394 void *, arg); 395 _syscall2(int, capget, struct __user_cap_header_struct *, header, 396 struct __user_cap_data_struct *, data); 397 _syscall2(int, capset, struct __user_cap_header_struct *, header, 398 struct __user_cap_data_struct *, data); 399 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 400 _syscall2(int, ioprio_get, int, which, int, who) 401 #endif 402 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 403 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 404 #endif 405 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 406 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 407 #endif 408 409 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 410 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 411 unsigned long, idx1, unsigned long, idx2) 412 #endif 413 414 /* 415 * It is assumed that struct statx is architecture independent. 416 */ 417 #if defined(TARGET_NR_statx) && defined(__NR_statx) 418 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags, 419 unsigned int, mask, struct target_statx *, statxbuf) 420 #endif 421 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) 422 _syscall2(int, membarrier, int, cmd, int, flags) 423 #endif 424 425 static const bitmask_transtbl fcntl_flags_tbl[] = { 426 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 427 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 428 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 429 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 430 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 431 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 432 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 433 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 434 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 435 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 436 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 437 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 438 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 439 #if defined(O_DIRECT) 440 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 441 #endif 442 #if defined(O_NOATIME) 443 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 444 #endif 445 #if defined(O_CLOEXEC) 446 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 447 #endif 448 #if defined(O_PATH) 449 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 450 #endif 451 #if defined(O_TMPFILE) 452 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE }, 453 #endif 454 /* Don't terminate the list prematurely on 64-bit host+guest. */ 455 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 456 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 457 #endif 458 }; 459 460 _syscall2(int, sys_getcwd1, char *, buf, size_t, size) 461 462 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64) 463 #if defined(__NR_utimensat) 464 #define __NR_sys_utimensat __NR_utimensat 465 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 466 const struct timespec *,tsp,int,flags) 467 #else 468 static int sys_utimensat(int dirfd, const char *pathname, 469 const struct timespec times[2], int flags) 470 { 471 errno = ENOSYS; 472 return -1; 473 } 474 #endif 475 #endif /* TARGET_NR_utimensat */ 476 477 #ifdef TARGET_NR_renameat2 478 #if defined(__NR_renameat2) 479 #define __NR_sys_renameat2 __NR_renameat2 480 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, 481 const char *, new, unsigned int, flags) 482 #else 483 static int sys_renameat2(int oldfd, const char *old, 484 int newfd, const char *new, int flags) 485 { 486 if (flags == 0) { 487 return renameat(oldfd, old, newfd, new); 488 } 489 errno = ENOSYS; 490 return -1; 491 } 492 #endif 493 #endif /* TARGET_NR_renameat2 */ 494 495 #ifdef CONFIG_INOTIFY 496 #include <sys/inotify.h> 497 #else 498 /* Userspace can usually survive runtime without inotify */ 499 #undef TARGET_NR_inotify_init 500 #undef TARGET_NR_inotify_init1 501 #undef TARGET_NR_inotify_add_watch 502 #undef TARGET_NR_inotify_rm_watch 503 #endif /* CONFIG_INOTIFY */ 504 505 #if defined(TARGET_NR_prlimit64) 506 #ifndef __NR_prlimit64 507 # define __NR_prlimit64 -1 508 #endif 509 #define __NR_sys_prlimit64 __NR_prlimit64 510 /* The glibc rlimit structure may not be that used by the underlying syscall */ 511 struct host_rlimit64 { 512 uint64_t rlim_cur; 513 uint64_t rlim_max; 514 }; 515 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 516 const struct host_rlimit64 *, new_limit, 517 struct host_rlimit64 *, old_limit) 518 #endif 519 520 521 #if defined(TARGET_NR_timer_create) 522 /* Maximum of 32 active POSIX timers allowed at any one time. */ 523 #define GUEST_TIMER_MAX 32 524 static timer_t g_posix_timers[GUEST_TIMER_MAX]; 525 static int g_posix_timer_allocated[GUEST_TIMER_MAX]; 526 527 static inline int next_free_host_timer(void) 528 { 529 int k; 530 for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) { 531 if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) { 532 return k; 533 } 534 } 535 return -1; 536 } 537 538 static inline void free_host_timer_slot(int id) 539 { 540 qatomic_store_release(g_posix_timer_allocated + id, 0); 541 } 542 #endif 543 544 static inline int host_to_target_errno(int host_errno) 545 { 546 switch (host_errno) { 547 #define E(X) case X: return TARGET_##X; 548 #include "errnos.c.inc" 549 #undef E 550 default: 551 return host_errno; 552 } 553 } 554 555 static inline int target_to_host_errno(int target_errno) 556 { 557 switch (target_errno) { 558 #define E(X) case TARGET_##X: return X; 559 #include "errnos.c.inc" 560 #undef E 561 default: 562 return target_errno; 563 } 564 } 565 566 abi_long get_errno(abi_long ret) 567 { 568 if (ret == -1) 569 return -host_to_target_errno(errno); 570 else 571 return ret; 572 } 573 574 const char *target_strerror(int err) 575 { 576 if (err == QEMU_ERESTARTSYS) { 577 return "To be restarted"; 578 } 579 if (err == QEMU_ESIGRETURN) { 580 return "Successful exit from sigreturn"; 581 } 582 583 return strerror(target_to_host_errno(err)); 584 } 585 586 static int check_zeroed_user(abi_long addr, size_t ksize, size_t usize) 587 { 588 int i; 589 uint8_t b; 590 if (usize <= ksize) { 591 return 1; 592 } 593 for (i = ksize; i < usize; i++) { 594 if (get_user_u8(b, addr + i)) { 595 return -TARGET_EFAULT; 596 } 597 if (b != 0) { 598 return 0; 599 } 600 } 601 return 1; 602 } 603 604 #define safe_syscall0(type, name) \ 605 static type safe_##name(void) \ 606 { \ 607 return safe_syscall(__NR_##name); \ 608 } 609 610 #define safe_syscall1(type, name, type1, arg1) \ 611 static type safe_##name(type1 arg1) \ 612 { \ 613 return safe_syscall(__NR_##name, arg1); \ 614 } 615 616 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 617 static type safe_##name(type1 arg1, type2 arg2) \ 618 { \ 619 return safe_syscall(__NR_##name, arg1, arg2); \ 620 } 621 622 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 623 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 624 { \ 625 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 626 } 627 628 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 629 type4, arg4) \ 630 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 631 { \ 632 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 633 } 634 635 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 636 type4, arg4, type5, arg5) \ 637 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 638 type5 arg5) \ 639 { \ 640 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 641 } 642 643 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 644 type4, arg4, type5, arg5, type6, arg6) \ 645 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 646 type5 arg5, type6 arg6) \ 647 { \ 648 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 649 } 650 651 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 652 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 653 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 654 int, flags, mode_t, mode) 655 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) 656 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 657 struct rusage *, rusage) 658 #endif 659 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 660 int, options, struct rusage *, rusage) 661 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 662 safe_syscall5(int, execveat, int, dirfd, const char *, filename, 663 char **, argv, char **, envp, int, flags) 664 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 665 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 666 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 667 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 668 #endif 669 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64) 670 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 671 struct timespec *, tsp, const sigset_t *, sigmask, 672 size_t, sigsetsize) 673 #endif 674 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 675 int, maxevents, int, timeout, const sigset_t *, sigmask, 676 size_t, sigsetsize) 677 #if defined(__NR_futex) 678 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 679 const struct timespec *,timeout,int *,uaddr2,int,val3) 680 #endif 681 #if defined(__NR_futex_time64) 682 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \ 683 const struct timespec *,timeout,int *,uaddr2,int,val3) 684 #endif 685 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 686 safe_syscall2(int, kill, pid_t, pid, int, sig) 687 safe_syscall2(int, tkill, int, tid, int, sig) 688 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 689 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 690 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 691 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 692 unsigned long, pos_l, unsigned long, pos_h) 693 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 694 unsigned long, pos_l, unsigned long, pos_h) 695 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 696 socklen_t, addrlen) 697 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 698 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 699 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 700 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 701 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 702 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 703 safe_syscall2(int, flock, int, fd, int, operation) 704 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64) 705 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 706 const struct timespec *, uts, size_t, sigsetsize) 707 #endif 708 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 709 int, flags) 710 #if defined(TARGET_NR_nanosleep) 711 safe_syscall2(int, nanosleep, const struct timespec *, req, 712 struct timespec *, rem) 713 #endif 714 #if defined(TARGET_NR_clock_nanosleep) || \ 715 defined(TARGET_NR_clock_nanosleep_time64) 716 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 717 const struct timespec *, req, struct timespec *, rem) 718 #endif 719 #ifdef __NR_ipc 720 #ifdef __s390x__ 721 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third, 722 void *, ptr) 723 #else 724 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 725 void *, ptr, long, fifth) 726 #endif 727 #endif 728 #ifdef __NR_msgsnd 729 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 730 int, flags) 731 #endif 732 #ifdef __NR_msgrcv 733 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 734 long, msgtype, int, flags) 735 #endif 736 #ifdef __NR_semtimedop 737 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 738 unsigned, nsops, const struct timespec *, timeout) 739 #endif 740 #if defined(TARGET_NR_mq_timedsend) || \ 741 defined(TARGET_NR_mq_timedsend_time64) 742 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 743 size_t, len, unsigned, prio, const struct timespec *, timeout) 744 #endif 745 #if defined(TARGET_NR_mq_timedreceive) || \ 746 defined(TARGET_NR_mq_timedreceive_time64) 747 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 748 size_t, len, unsigned *, prio, const struct timespec *, timeout) 749 #endif 750 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 751 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff, 752 int, outfd, loff_t *, poutoff, size_t, length, 753 unsigned int, flags) 754 #endif 755 756 /* We do ioctl like this rather than via safe_syscall3 to preserve the 757 * "third argument might be integer or pointer or not present" behaviour of 758 * the libc function. 759 */ 760 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 761 /* Similarly for fcntl. Note that callers must always: 762 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 763 * use the flock64 struct rather than unsuffixed flock 764 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 765 */ 766 #ifdef __NR_fcntl64 767 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 768 #else 769 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 770 #endif 771 772 static inline int host_to_target_sock_type(int host_type) 773 { 774 int target_type; 775 776 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 777 case SOCK_DGRAM: 778 target_type = TARGET_SOCK_DGRAM; 779 break; 780 case SOCK_STREAM: 781 target_type = TARGET_SOCK_STREAM; 782 break; 783 default: 784 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 785 break; 786 } 787 788 #if defined(SOCK_CLOEXEC) 789 if (host_type & SOCK_CLOEXEC) { 790 target_type |= TARGET_SOCK_CLOEXEC; 791 } 792 #endif 793 794 #if defined(SOCK_NONBLOCK) 795 if (host_type & SOCK_NONBLOCK) { 796 target_type |= TARGET_SOCK_NONBLOCK; 797 } 798 #endif 799 800 return target_type; 801 } 802 803 static abi_ulong target_brk, initial_target_brk; 804 805 void target_set_brk(abi_ulong new_brk) 806 { 807 target_brk = TARGET_PAGE_ALIGN(new_brk); 808 initial_target_brk = target_brk; 809 } 810 811 /* do_brk() must return target values and target errnos. */ 812 abi_long do_brk(abi_ulong brk_val) 813 { 814 abi_long mapped_addr; 815 abi_ulong new_brk; 816 abi_ulong old_brk; 817 818 /* brk pointers are always untagged */ 819 820 /* do not allow to shrink below initial brk value */ 821 if (brk_val < initial_target_brk) { 822 return target_brk; 823 } 824 825 new_brk = TARGET_PAGE_ALIGN(brk_val); 826 old_brk = TARGET_PAGE_ALIGN(target_brk); 827 828 /* new and old target_brk might be on the same page */ 829 if (new_brk == old_brk) { 830 target_brk = brk_val; 831 return target_brk; 832 } 833 834 /* Release heap if necesary */ 835 if (new_brk < old_brk) { 836 target_munmap(new_brk, old_brk - new_brk); 837 838 target_brk = brk_val; 839 return target_brk; 840 } 841 842 mapped_addr = target_mmap(old_brk, new_brk - old_brk, 843 PROT_READ | PROT_WRITE, 844 MAP_FIXED_NOREPLACE | MAP_ANON | MAP_PRIVATE, 845 -1, 0); 846 847 if (mapped_addr == old_brk) { 848 target_brk = brk_val; 849 return target_brk; 850 } 851 852 #if defined(TARGET_ALPHA) 853 /* We (partially) emulate OSF/1 on Alpha, which requires we 854 return a proper errno, not an unchanged brk value. */ 855 return -TARGET_ENOMEM; 856 #endif 857 /* For everything else, return the previous break. */ 858 return target_brk; 859 } 860 861 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 862 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 863 static inline abi_long copy_from_user_fdset(fd_set *fds, 864 abi_ulong target_fds_addr, 865 int n) 866 { 867 int i, nw, j, k; 868 abi_ulong b, *target_fds; 869 870 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 871 if (!(target_fds = lock_user(VERIFY_READ, 872 target_fds_addr, 873 sizeof(abi_ulong) * nw, 874 1))) 875 return -TARGET_EFAULT; 876 877 FD_ZERO(fds); 878 k = 0; 879 for (i = 0; i < nw; i++) { 880 /* grab the abi_ulong */ 881 __get_user(b, &target_fds[i]); 882 for (j = 0; j < TARGET_ABI_BITS; j++) { 883 /* check the bit inside the abi_ulong */ 884 if ((b >> j) & 1) 885 FD_SET(k, fds); 886 k++; 887 } 888 } 889 890 unlock_user(target_fds, target_fds_addr, 0); 891 892 return 0; 893 } 894 895 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 896 abi_ulong target_fds_addr, 897 int n) 898 { 899 if (target_fds_addr) { 900 if (copy_from_user_fdset(fds, target_fds_addr, n)) 901 return -TARGET_EFAULT; 902 *fds_ptr = fds; 903 } else { 904 *fds_ptr = NULL; 905 } 906 return 0; 907 } 908 909 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 910 const fd_set *fds, 911 int n) 912 { 913 int i, nw, j, k; 914 abi_long v; 915 abi_ulong *target_fds; 916 917 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 918 if (!(target_fds = lock_user(VERIFY_WRITE, 919 target_fds_addr, 920 sizeof(abi_ulong) * nw, 921 0))) 922 return -TARGET_EFAULT; 923 924 k = 0; 925 for (i = 0; i < nw; i++) { 926 v = 0; 927 for (j = 0; j < TARGET_ABI_BITS; j++) { 928 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 929 k++; 930 } 931 __put_user(v, &target_fds[i]); 932 } 933 934 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 935 936 return 0; 937 } 938 #endif 939 940 #if defined(__alpha__) 941 #define HOST_HZ 1024 942 #else 943 #define HOST_HZ 100 944 #endif 945 946 static inline abi_long host_to_target_clock_t(long ticks) 947 { 948 #if HOST_HZ == TARGET_HZ 949 return ticks; 950 #else 951 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 952 #endif 953 } 954 955 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 956 const struct rusage *rusage) 957 { 958 struct target_rusage *target_rusage; 959 960 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 961 return -TARGET_EFAULT; 962 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 963 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 964 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 965 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 966 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 967 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 968 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 969 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 970 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 971 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 972 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 973 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 974 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 975 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 976 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 977 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 978 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 979 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 980 unlock_user_struct(target_rusage, target_addr, 1); 981 982 return 0; 983 } 984 985 #ifdef TARGET_NR_setrlimit 986 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 987 { 988 abi_ulong target_rlim_swap; 989 rlim_t result; 990 991 target_rlim_swap = tswapal(target_rlim); 992 if (target_rlim_swap == TARGET_RLIM_INFINITY) 993 return RLIM_INFINITY; 994 995 result = target_rlim_swap; 996 if (target_rlim_swap != (rlim_t)result) 997 return RLIM_INFINITY; 998 999 return result; 1000 } 1001 #endif 1002 1003 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) 1004 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 1005 { 1006 abi_ulong target_rlim_swap; 1007 abi_ulong result; 1008 1009 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1010 target_rlim_swap = TARGET_RLIM_INFINITY; 1011 else 1012 target_rlim_swap = rlim; 1013 result = tswapal(target_rlim_swap); 1014 1015 return result; 1016 } 1017 #endif 1018 1019 static inline int target_to_host_resource(int code) 1020 { 1021 switch (code) { 1022 case TARGET_RLIMIT_AS: 1023 return RLIMIT_AS; 1024 case TARGET_RLIMIT_CORE: 1025 return RLIMIT_CORE; 1026 case TARGET_RLIMIT_CPU: 1027 return RLIMIT_CPU; 1028 case TARGET_RLIMIT_DATA: 1029 return RLIMIT_DATA; 1030 case TARGET_RLIMIT_FSIZE: 1031 return RLIMIT_FSIZE; 1032 case TARGET_RLIMIT_LOCKS: 1033 return RLIMIT_LOCKS; 1034 case TARGET_RLIMIT_MEMLOCK: 1035 return RLIMIT_MEMLOCK; 1036 case TARGET_RLIMIT_MSGQUEUE: 1037 return RLIMIT_MSGQUEUE; 1038 case TARGET_RLIMIT_NICE: 1039 return RLIMIT_NICE; 1040 case TARGET_RLIMIT_NOFILE: 1041 return RLIMIT_NOFILE; 1042 case TARGET_RLIMIT_NPROC: 1043 return RLIMIT_NPROC; 1044 case TARGET_RLIMIT_RSS: 1045 return RLIMIT_RSS; 1046 case TARGET_RLIMIT_RTPRIO: 1047 return RLIMIT_RTPRIO; 1048 #ifdef RLIMIT_RTTIME 1049 case TARGET_RLIMIT_RTTIME: 1050 return RLIMIT_RTTIME; 1051 #endif 1052 case TARGET_RLIMIT_SIGPENDING: 1053 return RLIMIT_SIGPENDING; 1054 case TARGET_RLIMIT_STACK: 1055 return RLIMIT_STACK; 1056 default: 1057 return code; 1058 } 1059 } 1060 1061 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1062 abi_ulong target_tv_addr) 1063 { 1064 struct target_timeval *target_tv; 1065 1066 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1067 return -TARGET_EFAULT; 1068 } 1069 1070 __get_user(tv->tv_sec, &target_tv->tv_sec); 1071 __get_user(tv->tv_usec, &target_tv->tv_usec); 1072 1073 unlock_user_struct(target_tv, target_tv_addr, 0); 1074 1075 return 0; 1076 } 1077 1078 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1079 const struct timeval *tv) 1080 { 1081 struct target_timeval *target_tv; 1082 1083 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1084 return -TARGET_EFAULT; 1085 } 1086 1087 __put_user(tv->tv_sec, &target_tv->tv_sec); 1088 __put_user(tv->tv_usec, &target_tv->tv_usec); 1089 1090 unlock_user_struct(target_tv, target_tv_addr, 1); 1091 1092 return 0; 1093 } 1094 1095 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 1096 static inline abi_long copy_from_user_timeval64(struct timeval *tv, 1097 abi_ulong target_tv_addr) 1098 { 1099 struct target__kernel_sock_timeval *target_tv; 1100 1101 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1102 return -TARGET_EFAULT; 1103 } 1104 1105 __get_user(tv->tv_sec, &target_tv->tv_sec); 1106 __get_user(tv->tv_usec, &target_tv->tv_usec); 1107 1108 unlock_user_struct(target_tv, target_tv_addr, 0); 1109 1110 return 0; 1111 } 1112 #endif 1113 1114 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, 1115 const struct timeval *tv) 1116 { 1117 struct target__kernel_sock_timeval *target_tv; 1118 1119 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1120 return -TARGET_EFAULT; 1121 } 1122 1123 __put_user(tv->tv_sec, &target_tv->tv_sec); 1124 __put_user(tv->tv_usec, &target_tv->tv_usec); 1125 1126 unlock_user_struct(target_tv, target_tv_addr, 1); 1127 1128 return 0; 1129 } 1130 1131 #if defined(TARGET_NR_futex) || \ 1132 defined(TARGET_NR_rt_sigtimedwait) || \ 1133 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ 1134 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ 1135 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ 1136 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \ 1137 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \ 1138 defined(TARGET_NR_timer_settime) || \ 1139 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 1140 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 1141 abi_ulong target_addr) 1142 { 1143 struct target_timespec *target_ts; 1144 1145 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1146 return -TARGET_EFAULT; 1147 } 1148 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1149 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1150 unlock_user_struct(target_ts, target_addr, 0); 1151 return 0; 1152 } 1153 #endif 1154 1155 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \ 1156 defined(TARGET_NR_timer_settime64) || \ 1157 defined(TARGET_NR_mq_timedsend_time64) || \ 1158 defined(TARGET_NR_mq_timedreceive_time64) || \ 1159 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \ 1160 defined(TARGET_NR_clock_nanosleep_time64) || \ 1161 defined(TARGET_NR_rt_sigtimedwait_time64) || \ 1162 defined(TARGET_NR_utimensat) || \ 1163 defined(TARGET_NR_utimensat_time64) || \ 1164 defined(TARGET_NR_semtimedop_time64) || \ 1165 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64) 1166 static inline abi_long target_to_host_timespec64(struct timespec *host_ts, 1167 abi_ulong target_addr) 1168 { 1169 struct target__kernel_timespec *target_ts; 1170 1171 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1172 return -TARGET_EFAULT; 1173 } 1174 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1175 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1176 /* in 32bit mode, this drops the padding */ 1177 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec; 1178 unlock_user_struct(target_ts, target_addr, 0); 1179 return 0; 1180 } 1181 #endif 1182 1183 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 1184 struct timespec *host_ts) 1185 { 1186 struct target_timespec *target_ts; 1187 1188 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1189 return -TARGET_EFAULT; 1190 } 1191 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1192 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1193 unlock_user_struct(target_ts, target_addr, 1); 1194 return 0; 1195 } 1196 1197 static inline abi_long host_to_target_timespec64(abi_ulong target_addr, 1198 struct timespec *host_ts) 1199 { 1200 struct target__kernel_timespec *target_ts; 1201 1202 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1203 return -TARGET_EFAULT; 1204 } 1205 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1206 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1207 unlock_user_struct(target_ts, target_addr, 1); 1208 return 0; 1209 } 1210 1211 #if defined(TARGET_NR_gettimeofday) 1212 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, 1213 struct timezone *tz) 1214 { 1215 struct target_timezone *target_tz; 1216 1217 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) { 1218 return -TARGET_EFAULT; 1219 } 1220 1221 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1222 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1223 1224 unlock_user_struct(target_tz, target_tz_addr, 1); 1225 1226 return 0; 1227 } 1228 #endif 1229 1230 #if defined(TARGET_NR_settimeofday) 1231 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1232 abi_ulong target_tz_addr) 1233 { 1234 struct target_timezone *target_tz; 1235 1236 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1237 return -TARGET_EFAULT; 1238 } 1239 1240 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1241 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1242 1243 unlock_user_struct(target_tz, target_tz_addr, 0); 1244 1245 return 0; 1246 } 1247 #endif 1248 1249 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1250 #include <mqueue.h> 1251 1252 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1253 abi_ulong target_mq_attr_addr) 1254 { 1255 struct target_mq_attr *target_mq_attr; 1256 1257 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1258 target_mq_attr_addr, 1)) 1259 return -TARGET_EFAULT; 1260 1261 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1262 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1263 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1264 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1265 1266 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1267 1268 return 0; 1269 } 1270 1271 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1272 const struct mq_attr *attr) 1273 { 1274 struct target_mq_attr *target_mq_attr; 1275 1276 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1277 target_mq_attr_addr, 0)) 1278 return -TARGET_EFAULT; 1279 1280 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1281 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1282 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1283 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1284 1285 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1286 1287 return 0; 1288 } 1289 #endif 1290 1291 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1292 /* do_select() must return target values and target errnos. */ 1293 static abi_long do_select(int n, 1294 abi_ulong rfd_addr, abi_ulong wfd_addr, 1295 abi_ulong efd_addr, abi_ulong target_tv_addr) 1296 { 1297 fd_set rfds, wfds, efds; 1298 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1299 struct timeval tv; 1300 struct timespec ts, *ts_ptr; 1301 abi_long ret; 1302 1303 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1304 if (ret) { 1305 return ret; 1306 } 1307 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1308 if (ret) { 1309 return ret; 1310 } 1311 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1312 if (ret) { 1313 return ret; 1314 } 1315 1316 if (target_tv_addr) { 1317 if (copy_from_user_timeval(&tv, target_tv_addr)) 1318 return -TARGET_EFAULT; 1319 ts.tv_sec = tv.tv_sec; 1320 ts.tv_nsec = tv.tv_usec * 1000; 1321 ts_ptr = &ts; 1322 } else { 1323 ts_ptr = NULL; 1324 } 1325 1326 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1327 ts_ptr, NULL)); 1328 1329 if (!is_error(ret)) { 1330 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1331 return -TARGET_EFAULT; 1332 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1333 return -TARGET_EFAULT; 1334 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1335 return -TARGET_EFAULT; 1336 1337 if (target_tv_addr) { 1338 tv.tv_sec = ts.tv_sec; 1339 tv.tv_usec = ts.tv_nsec / 1000; 1340 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1341 return -TARGET_EFAULT; 1342 } 1343 } 1344 } 1345 1346 return ret; 1347 } 1348 1349 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1350 static abi_long do_old_select(abi_ulong arg1) 1351 { 1352 struct target_sel_arg_struct *sel; 1353 abi_ulong inp, outp, exp, tvp; 1354 long nsel; 1355 1356 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1357 return -TARGET_EFAULT; 1358 } 1359 1360 nsel = tswapal(sel->n); 1361 inp = tswapal(sel->inp); 1362 outp = tswapal(sel->outp); 1363 exp = tswapal(sel->exp); 1364 tvp = tswapal(sel->tvp); 1365 1366 unlock_user_struct(sel, arg1, 0); 1367 1368 return do_select(nsel, inp, outp, exp, tvp); 1369 } 1370 #endif 1371 #endif 1372 1373 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 1374 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3, 1375 abi_long arg4, abi_long arg5, abi_long arg6, 1376 bool time64) 1377 { 1378 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 1379 fd_set rfds, wfds, efds; 1380 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1381 struct timespec ts, *ts_ptr; 1382 abi_long ret; 1383 1384 /* 1385 * The 6th arg is actually two args smashed together, 1386 * so we cannot use the C library. 1387 */ 1388 struct { 1389 sigset_t *set; 1390 size_t size; 1391 } sig, *sig_ptr; 1392 1393 abi_ulong arg_sigset, arg_sigsize, *arg7; 1394 1395 n = arg1; 1396 rfd_addr = arg2; 1397 wfd_addr = arg3; 1398 efd_addr = arg4; 1399 ts_addr = arg5; 1400 1401 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1402 if (ret) { 1403 return ret; 1404 } 1405 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1406 if (ret) { 1407 return ret; 1408 } 1409 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1410 if (ret) { 1411 return ret; 1412 } 1413 1414 /* 1415 * This takes a timespec, and not a timeval, so we cannot 1416 * use the do_select() helper ... 1417 */ 1418 if (ts_addr) { 1419 if (time64) { 1420 if (target_to_host_timespec64(&ts, ts_addr)) { 1421 return -TARGET_EFAULT; 1422 } 1423 } else { 1424 if (target_to_host_timespec(&ts, ts_addr)) { 1425 return -TARGET_EFAULT; 1426 } 1427 } 1428 ts_ptr = &ts; 1429 } else { 1430 ts_ptr = NULL; 1431 } 1432 1433 /* Extract the two packed args for the sigset */ 1434 sig_ptr = NULL; 1435 if (arg6) { 1436 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 1437 if (!arg7) { 1438 return -TARGET_EFAULT; 1439 } 1440 arg_sigset = tswapal(arg7[0]); 1441 arg_sigsize = tswapal(arg7[1]); 1442 unlock_user(arg7, arg6, 0); 1443 1444 if (arg_sigset) { 1445 ret = process_sigsuspend_mask(&sig.set, arg_sigset, arg_sigsize); 1446 if (ret != 0) { 1447 return ret; 1448 } 1449 sig_ptr = &sig; 1450 sig.size = SIGSET_T_SIZE; 1451 } 1452 } 1453 1454 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1455 ts_ptr, sig_ptr)); 1456 1457 if (sig_ptr) { 1458 finish_sigsuspend_mask(ret); 1459 } 1460 1461 if (!is_error(ret)) { 1462 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) { 1463 return -TARGET_EFAULT; 1464 } 1465 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) { 1466 return -TARGET_EFAULT; 1467 } 1468 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) { 1469 return -TARGET_EFAULT; 1470 } 1471 if (time64) { 1472 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) { 1473 return -TARGET_EFAULT; 1474 } 1475 } else { 1476 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) { 1477 return -TARGET_EFAULT; 1478 } 1479 } 1480 } 1481 return ret; 1482 } 1483 #endif 1484 1485 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \ 1486 defined(TARGET_NR_ppoll_time64) 1487 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3, 1488 abi_long arg4, abi_long arg5, bool ppoll, bool time64) 1489 { 1490 struct target_pollfd *target_pfd; 1491 unsigned int nfds = arg2; 1492 struct pollfd *pfd; 1493 unsigned int i; 1494 abi_long ret; 1495 1496 pfd = NULL; 1497 target_pfd = NULL; 1498 if (nfds) { 1499 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 1500 return -TARGET_EINVAL; 1501 } 1502 target_pfd = lock_user(VERIFY_WRITE, arg1, 1503 sizeof(struct target_pollfd) * nfds, 1); 1504 if (!target_pfd) { 1505 return -TARGET_EFAULT; 1506 } 1507 1508 pfd = alloca(sizeof(struct pollfd) * nfds); 1509 for (i = 0; i < nfds; i++) { 1510 pfd[i].fd = tswap32(target_pfd[i].fd); 1511 pfd[i].events = tswap16(target_pfd[i].events); 1512 } 1513 } 1514 if (ppoll) { 1515 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 1516 sigset_t *set = NULL; 1517 1518 if (arg3) { 1519 if (time64) { 1520 if (target_to_host_timespec64(timeout_ts, arg3)) { 1521 unlock_user(target_pfd, arg1, 0); 1522 return -TARGET_EFAULT; 1523 } 1524 } else { 1525 if (target_to_host_timespec(timeout_ts, arg3)) { 1526 unlock_user(target_pfd, arg1, 0); 1527 return -TARGET_EFAULT; 1528 } 1529 } 1530 } else { 1531 timeout_ts = NULL; 1532 } 1533 1534 if (arg4) { 1535 ret = process_sigsuspend_mask(&set, arg4, arg5); 1536 if (ret != 0) { 1537 unlock_user(target_pfd, arg1, 0); 1538 return ret; 1539 } 1540 } 1541 1542 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 1543 set, SIGSET_T_SIZE)); 1544 1545 if (set) { 1546 finish_sigsuspend_mask(ret); 1547 } 1548 if (!is_error(ret) && arg3) { 1549 if (time64) { 1550 if (host_to_target_timespec64(arg3, timeout_ts)) { 1551 return -TARGET_EFAULT; 1552 } 1553 } else { 1554 if (host_to_target_timespec(arg3, timeout_ts)) { 1555 return -TARGET_EFAULT; 1556 } 1557 } 1558 } 1559 } else { 1560 struct timespec ts, *pts; 1561 1562 if (arg3 >= 0) { 1563 /* Convert ms to secs, ns */ 1564 ts.tv_sec = arg3 / 1000; 1565 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 1566 pts = &ts; 1567 } else { 1568 /* -ve poll() timeout means "infinite" */ 1569 pts = NULL; 1570 } 1571 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 1572 } 1573 1574 if (!is_error(ret)) { 1575 for (i = 0; i < nfds; i++) { 1576 target_pfd[i].revents = tswap16(pfd[i].revents); 1577 } 1578 } 1579 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 1580 return ret; 1581 } 1582 #endif 1583 1584 static abi_long do_pipe(CPUArchState *cpu_env, abi_ulong pipedes, 1585 int flags, int is_pipe2) 1586 { 1587 int host_pipe[2]; 1588 abi_long ret; 1589 ret = pipe2(host_pipe, flags); 1590 1591 if (is_error(ret)) 1592 return get_errno(ret); 1593 1594 /* Several targets have special calling conventions for the original 1595 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1596 if (!is_pipe2) { 1597 #if defined(TARGET_ALPHA) 1598 cpu_env->ir[IR_A4] = host_pipe[1]; 1599 return host_pipe[0]; 1600 #elif defined(TARGET_MIPS) 1601 cpu_env->active_tc.gpr[3] = host_pipe[1]; 1602 return host_pipe[0]; 1603 #elif defined(TARGET_SH4) 1604 cpu_env->gregs[1] = host_pipe[1]; 1605 return host_pipe[0]; 1606 #elif defined(TARGET_SPARC) 1607 cpu_env->regwptr[1] = host_pipe[1]; 1608 return host_pipe[0]; 1609 #endif 1610 } 1611 1612 if (put_user_s32(host_pipe[0], pipedes) 1613 || put_user_s32(host_pipe[1], pipedes + sizeof(abi_int))) 1614 return -TARGET_EFAULT; 1615 return get_errno(ret); 1616 } 1617 1618 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1619 abi_ulong target_addr, 1620 socklen_t len) 1621 { 1622 struct target_ip_mreqn *target_smreqn; 1623 1624 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1625 if (!target_smreqn) 1626 return -TARGET_EFAULT; 1627 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1628 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1629 if (len == sizeof(struct target_ip_mreqn)) 1630 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1631 unlock_user(target_smreqn, target_addr, 0); 1632 1633 return 0; 1634 } 1635 1636 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1637 abi_ulong target_addr, 1638 socklen_t len) 1639 { 1640 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1641 sa_family_t sa_family; 1642 struct target_sockaddr *target_saddr; 1643 1644 if (fd_trans_target_to_host_addr(fd)) { 1645 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1646 } 1647 1648 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1649 if (!target_saddr) 1650 return -TARGET_EFAULT; 1651 1652 sa_family = tswap16(target_saddr->sa_family); 1653 1654 /* Oops. The caller might send a incomplete sun_path; sun_path 1655 * must be terminated by \0 (see the manual page), but 1656 * unfortunately it is quite common to specify sockaddr_un 1657 * length as "strlen(x->sun_path)" while it should be 1658 * "strlen(...) + 1". We'll fix that here if needed. 1659 * Linux kernel has a similar feature. 1660 */ 1661 1662 if (sa_family == AF_UNIX) { 1663 if (len < unix_maxlen && len > 0) { 1664 char *cp = (char*)target_saddr; 1665 1666 if ( cp[len-1] && !cp[len] ) 1667 len++; 1668 } 1669 if (len > unix_maxlen) 1670 len = unix_maxlen; 1671 } 1672 1673 memcpy(addr, target_saddr, len); 1674 addr->sa_family = sa_family; 1675 if (sa_family == AF_NETLINK) { 1676 struct sockaddr_nl *nladdr; 1677 1678 nladdr = (struct sockaddr_nl *)addr; 1679 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1680 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1681 } else if (sa_family == AF_PACKET) { 1682 struct target_sockaddr_ll *lladdr; 1683 1684 lladdr = (struct target_sockaddr_ll *)addr; 1685 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1686 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1687 } else if (sa_family == AF_INET6) { 1688 struct sockaddr_in6 *in6addr; 1689 1690 in6addr = (struct sockaddr_in6 *)addr; 1691 in6addr->sin6_scope_id = tswap32(in6addr->sin6_scope_id); 1692 } 1693 unlock_user(target_saddr, target_addr, 0); 1694 1695 return 0; 1696 } 1697 1698 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1699 struct sockaddr *addr, 1700 socklen_t len) 1701 { 1702 struct target_sockaddr *target_saddr; 1703 1704 if (len == 0) { 1705 return 0; 1706 } 1707 assert(addr); 1708 1709 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1710 if (!target_saddr) 1711 return -TARGET_EFAULT; 1712 memcpy(target_saddr, addr, len); 1713 if (len >= offsetof(struct target_sockaddr, sa_family) + 1714 sizeof(target_saddr->sa_family)) { 1715 target_saddr->sa_family = tswap16(addr->sa_family); 1716 } 1717 if (addr->sa_family == AF_NETLINK && 1718 len >= sizeof(struct target_sockaddr_nl)) { 1719 struct target_sockaddr_nl *target_nl = 1720 (struct target_sockaddr_nl *)target_saddr; 1721 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1722 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1723 } else if (addr->sa_family == AF_PACKET) { 1724 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1725 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1726 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1727 } else if (addr->sa_family == AF_INET6 && 1728 len >= sizeof(struct target_sockaddr_in6)) { 1729 struct target_sockaddr_in6 *target_in6 = 1730 (struct target_sockaddr_in6 *)target_saddr; 1731 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1732 } 1733 unlock_user(target_saddr, target_addr, len); 1734 1735 return 0; 1736 } 1737 1738 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1739 struct target_msghdr *target_msgh) 1740 { 1741 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1742 abi_long msg_controllen; 1743 abi_ulong target_cmsg_addr; 1744 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1745 socklen_t space = 0; 1746 1747 msg_controllen = tswapal(target_msgh->msg_controllen); 1748 if (msg_controllen < sizeof (struct target_cmsghdr)) 1749 goto the_end; 1750 target_cmsg_addr = tswapal(target_msgh->msg_control); 1751 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1752 target_cmsg_start = target_cmsg; 1753 if (!target_cmsg) 1754 return -TARGET_EFAULT; 1755 1756 while (cmsg && target_cmsg) { 1757 void *data = CMSG_DATA(cmsg); 1758 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1759 1760 int len = tswapal(target_cmsg->cmsg_len) 1761 - sizeof(struct target_cmsghdr); 1762 1763 space += CMSG_SPACE(len); 1764 if (space > msgh->msg_controllen) { 1765 space -= CMSG_SPACE(len); 1766 /* This is a QEMU bug, since we allocated the payload 1767 * area ourselves (unlike overflow in host-to-target 1768 * conversion, which is just the guest giving us a buffer 1769 * that's too small). It can't happen for the payload types 1770 * we currently support; if it becomes an issue in future 1771 * we would need to improve our allocation strategy to 1772 * something more intelligent than "twice the size of the 1773 * target buffer we're reading from". 1774 */ 1775 qemu_log_mask(LOG_UNIMP, 1776 ("Unsupported ancillary data %d/%d: " 1777 "unhandled msg size\n"), 1778 tswap32(target_cmsg->cmsg_level), 1779 tswap32(target_cmsg->cmsg_type)); 1780 break; 1781 } 1782 1783 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1784 cmsg->cmsg_level = SOL_SOCKET; 1785 } else { 1786 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1787 } 1788 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1789 cmsg->cmsg_len = CMSG_LEN(len); 1790 1791 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1792 int *fd = (int *)data; 1793 int *target_fd = (int *)target_data; 1794 int i, numfds = len / sizeof(int); 1795 1796 for (i = 0; i < numfds; i++) { 1797 __get_user(fd[i], target_fd + i); 1798 } 1799 } else if (cmsg->cmsg_level == SOL_SOCKET 1800 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1801 struct ucred *cred = (struct ucred *)data; 1802 struct target_ucred *target_cred = 1803 (struct target_ucred *)target_data; 1804 1805 __get_user(cred->pid, &target_cred->pid); 1806 __get_user(cred->uid, &target_cred->uid); 1807 __get_user(cred->gid, &target_cred->gid); 1808 } else if (cmsg->cmsg_level == SOL_ALG) { 1809 uint32_t *dst = (uint32_t *)data; 1810 1811 memcpy(dst, target_data, len); 1812 /* fix endianess of first 32-bit word */ 1813 if (len >= sizeof(uint32_t)) { 1814 *dst = tswap32(*dst); 1815 } 1816 } else { 1817 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1818 cmsg->cmsg_level, cmsg->cmsg_type); 1819 memcpy(data, target_data, len); 1820 } 1821 1822 cmsg = CMSG_NXTHDR(msgh, cmsg); 1823 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1824 target_cmsg_start); 1825 } 1826 unlock_user(target_cmsg, target_cmsg_addr, 0); 1827 the_end: 1828 msgh->msg_controllen = space; 1829 return 0; 1830 } 1831 1832 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1833 struct msghdr *msgh) 1834 { 1835 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1836 abi_long msg_controllen; 1837 abi_ulong target_cmsg_addr; 1838 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1839 socklen_t space = 0; 1840 1841 msg_controllen = tswapal(target_msgh->msg_controllen); 1842 if (msg_controllen < sizeof (struct target_cmsghdr)) 1843 goto the_end; 1844 target_cmsg_addr = tswapal(target_msgh->msg_control); 1845 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1846 target_cmsg_start = target_cmsg; 1847 if (!target_cmsg) 1848 return -TARGET_EFAULT; 1849 1850 while (cmsg && target_cmsg) { 1851 void *data = CMSG_DATA(cmsg); 1852 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1853 1854 int len = cmsg->cmsg_len - sizeof(struct cmsghdr); 1855 int tgt_len, tgt_space; 1856 1857 /* We never copy a half-header but may copy half-data; 1858 * this is Linux's behaviour in put_cmsg(). Note that 1859 * truncation here is a guest problem (which we report 1860 * to the guest via the CTRUNC bit), unlike truncation 1861 * in target_to_host_cmsg, which is a QEMU bug. 1862 */ 1863 if (msg_controllen < sizeof(struct target_cmsghdr)) { 1864 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1865 break; 1866 } 1867 1868 if (cmsg->cmsg_level == SOL_SOCKET) { 1869 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1870 } else { 1871 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1872 } 1873 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1874 1875 /* Payload types which need a different size of payload on 1876 * the target must adjust tgt_len here. 1877 */ 1878 tgt_len = len; 1879 switch (cmsg->cmsg_level) { 1880 case SOL_SOCKET: 1881 switch (cmsg->cmsg_type) { 1882 case SO_TIMESTAMP: 1883 tgt_len = sizeof(struct target_timeval); 1884 break; 1885 default: 1886 break; 1887 } 1888 break; 1889 default: 1890 break; 1891 } 1892 1893 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) { 1894 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1895 tgt_len = msg_controllen - sizeof(struct target_cmsghdr); 1896 } 1897 1898 /* We must now copy-and-convert len bytes of payload 1899 * into tgt_len bytes of destination space. Bear in mind 1900 * that in both source and destination we may be dealing 1901 * with a truncated value! 1902 */ 1903 switch (cmsg->cmsg_level) { 1904 case SOL_SOCKET: 1905 switch (cmsg->cmsg_type) { 1906 case SCM_RIGHTS: 1907 { 1908 int *fd = (int *)data; 1909 int *target_fd = (int *)target_data; 1910 int i, numfds = tgt_len / sizeof(int); 1911 1912 for (i = 0; i < numfds; i++) { 1913 __put_user(fd[i], target_fd + i); 1914 } 1915 break; 1916 } 1917 case SO_TIMESTAMP: 1918 { 1919 struct timeval *tv = (struct timeval *)data; 1920 struct target_timeval *target_tv = 1921 (struct target_timeval *)target_data; 1922 1923 if (len != sizeof(struct timeval) || 1924 tgt_len != sizeof(struct target_timeval)) { 1925 goto unimplemented; 1926 } 1927 1928 /* copy struct timeval to target */ 1929 __put_user(tv->tv_sec, &target_tv->tv_sec); 1930 __put_user(tv->tv_usec, &target_tv->tv_usec); 1931 break; 1932 } 1933 case SCM_CREDENTIALS: 1934 { 1935 struct ucred *cred = (struct ucred *)data; 1936 struct target_ucred *target_cred = 1937 (struct target_ucred *)target_data; 1938 1939 __put_user(cred->pid, &target_cred->pid); 1940 __put_user(cred->uid, &target_cred->uid); 1941 __put_user(cred->gid, &target_cred->gid); 1942 break; 1943 } 1944 default: 1945 goto unimplemented; 1946 } 1947 break; 1948 1949 case SOL_IP: 1950 switch (cmsg->cmsg_type) { 1951 case IP_TTL: 1952 { 1953 uint32_t *v = (uint32_t *)data; 1954 uint32_t *t_int = (uint32_t *)target_data; 1955 1956 if (len != sizeof(uint32_t) || 1957 tgt_len != sizeof(uint32_t)) { 1958 goto unimplemented; 1959 } 1960 __put_user(*v, t_int); 1961 break; 1962 } 1963 case IP_RECVERR: 1964 { 1965 struct errhdr_t { 1966 struct sock_extended_err ee; 1967 struct sockaddr_in offender; 1968 }; 1969 struct errhdr_t *errh = (struct errhdr_t *)data; 1970 struct errhdr_t *target_errh = 1971 (struct errhdr_t *)target_data; 1972 1973 if (len != sizeof(struct errhdr_t) || 1974 tgt_len != sizeof(struct errhdr_t)) { 1975 goto unimplemented; 1976 } 1977 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 1978 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 1979 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 1980 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 1981 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 1982 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 1983 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 1984 host_to_target_sockaddr((unsigned long) &target_errh->offender, 1985 (void *) &errh->offender, sizeof(errh->offender)); 1986 break; 1987 } 1988 default: 1989 goto unimplemented; 1990 } 1991 break; 1992 1993 case SOL_IPV6: 1994 switch (cmsg->cmsg_type) { 1995 case IPV6_HOPLIMIT: 1996 { 1997 uint32_t *v = (uint32_t *)data; 1998 uint32_t *t_int = (uint32_t *)target_data; 1999 2000 if (len != sizeof(uint32_t) || 2001 tgt_len != sizeof(uint32_t)) { 2002 goto unimplemented; 2003 } 2004 __put_user(*v, t_int); 2005 break; 2006 } 2007 case IPV6_RECVERR: 2008 { 2009 struct errhdr6_t { 2010 struct sock_extended_err ee; 2011 struct sockaddr_in6 offender; 2012 }; 2013 struct errhdr6_t *errh = (struct errhdr6_t *)data; 2014 struct errhdr6_t *target_errh = 2015 (struct errhdr6_t *)target_data; 2016 2017 if (len != sizeof(struct errhdr6_t) || 2018 tgt_len != sizeof(struct errhdr6_t)) { 2019 goto unimplemented; 2020 } 2021 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2022 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2023 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2024 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2025 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2026 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2027 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2028 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2029 (void *) &errh->offender, sizeof(errh->offender)); 2030 break; 2031 } 2032 default: 2033 goto unimplemented; 2034 } 2035 break; 2036 2037 default: 2038 unimplemented: 2039 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 2040 cmsg->cmsg_level, cmsg->cmsg_type); 2041 memcpy(target_data, data, MIN(len, tgt_len)); 2042 if (tgt_len > len) { 2043 memset(target_data + len, 0, tgt_len - len); 2044 } 2045 } 2046 2047 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len)); 2048 tgt_space = TARGET_CMSG_SPACE(tgt_len); 2049 if (msg_controllen < tgt_space) { 2050 tgt_space = msg_controllen; 2051 } 2052 msg_controllen -= tgt_space; 2053 space += tgt_space; 2054 cmsg = CMSG_NXTHDR(msgh, cmsg); 2055 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 2056 target_cmsg_start); 2057 } 2058 unlock_user(target_cmsg, target_cmsg_addr, space); 2059 the_end: 2060 target_msgh->msg_controllen = tswapal(space); 2061 return 0; 2062 } 2063 2064 /* do_setsockopt() Must return target values and target errnos. */ 2065 static abi_long do_setsockopt(int sockfd, int level, int optname, 2066 abi_ulong optval_addr, socklen_t optlen) 2067 { 2068 abi_long ret; 2069 int val; 2070 struct ip_mreqn *ip_mreq; 2071 struct ip_mreq_source *ip_mreq_source; 2072 2073 switch(level) { 2074 case SOL_TCP: 2075 case SOL_UDP: 2076 /* TCP and UDP options all take an 'int' value. */ 2077 if (optlen < sizeof(uint32_t)) 2078 return -TARGET_EINVAL; 2079 2080 if (get_user_u32(val, optval_addr)) 2081 return -TARGET_EFAULT; 2082 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2083 break; 2084 case SOL_IP: 2085 switch(optname) { 2086 case IP_TOS: 2087 case IP_TTL: 2088 case IP_HDRINCL: 2089 case IP_ROUTER_ALERT: 2090 case IP_RECVOPTS: 2091 case IP_RETOPTS: 2092 case IP_PKTINFO: 2093 case IP_MTU_DISCOVER: 2094 case IP_RECVERR: 2095 case IP_RECVTTL: 2096 case IP_RECVTOS: 2097 #ifdef IP_FREEBIND 2098 case IP_FREEBIND: 2099 #endif 2100 case IP_MULTICAST_TTL: 2101 case IP_MULTICAST_LOOP: 2102 val = 0; 2103 if (optlen >= sizeof(uint32_t)) { 2104 if (get_user_u32(val, optval_addr)) 2105 return -TARGET_EFAULT; 2106 } else if (optlen >= 1) { 2107 if (get_user_u8(val, optval_addr)) 2108 return -TARGET_EFAULT; 2109 } 2110 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2111 break; 2112 case IP_ADD_MEMBERSHIP: 2113 case IP_DROP_MEMBERSHIP: 2114 if (optlen < sizeof (struct target_ip_mreq) || 2115 optlen > sizeof (struct target_ip_mreqn)) 2116 return -TARGET_EINVAL; 2117 2118 ip_mreq = (struct ip_mreqn *) alloca(optlen); 2119 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 2120 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 2121 break; 2122 2123 case IP_BLOCK_SOURCE: 2124 case IP_UNBLOCK_SOURCE: 2125 case IP_ADD_SOURCE_MEMBERSHIP: 2126 case IP_DROP_SOURCE_MEMBERSHIP: 2127 if (optlen != sizeof (struct target_ip_mreq_source)) 2128 return -TARGET_EINVAL; 2129 2130 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2131 if (!ip_mreq_source) { 2132 return -TARGET_EFAULT; 2133 } 2134 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 2135 unlock_user (ip_mreq_source, optval_addr, 0); 2136 break; 2137 2138 default: 2139 goto unimplemented; 2140 } 2141 break; 2142 case SOL_IPV6: 2143 switch (optname) { 2144 case IPV6_MTU_DISCOVER: 2145 case IPV6_MTU: 2146 case IPV6_V6ONLY: 2147 case IPV6_RECVPKTINFO: 2148 case IPV6_UNICAST_HOPS: 2149 case IPV6_MULTICAST_HOPS: 2150 case IPV6_MULTICAST_LOOP: 2151 case IPV6_RECVERR: 2152 case IPV6_RECVHOPLIMIT: 2153 case IPV6_2292HOPLIMIT: 2154 case IPV6_CHECKSUM: 2155 case IPV6_ADDRFORM: 2156 case IPV6_2292PKTINFO: 2157 case IPV6_RECVTCLASS: 2158 case IPV6_RECVRTHDR: 2159 case IPV6_2292RTHDR: 2160 case IPV6_RECVHOPOPTS: 2161 case IPV6_2292HOPOPTS: 2162 case IPV6_RECVDSTOPTS: 2163 case IPV6_2292DSTOPTS: 2164 case IPV6_TCLASS: 2165 case IPV6_ADDR_PREFERENCES: 2166 #ifdef IPV6_RECVPATHMTU 2167 case IPV6_RECVPATHMTU: 2168 #endif 2169 #ifdef IPV6_TRANSPARENT 2170 case IPV6_TRANSPARENT: 2171 #endif 2172 #ifdef IPV6_FREEBIND 2173 case IPV6_FREEBIND: 2174 #endif 2175 #ifdef IPV6_RECVORIGDSTADDR 2176 case IPV6_RECVORIGDSTADDR: 2177 #endif 2178 val = 0; 2179 if (optlen < sizeof(uint32_t)) { 2180 return -TARGET_EINVAL; 2181 } 2182 if (get_user_u32(val, optval_addr)) { 2183 return -TARGET_EFAULT; 2184 } 2185 ret = get_errno(setsockopt(sockfd, level, optname, 2186 &val, sizeof(val))); 2187 break; 2188 case IPV6_PKTINFO: 2189 { 2190 struct in6_pktinfo pki; 2191 2192 if (optlen < sizeof(pki)) { 2193 return -TARGET_EINVAL; 2194 } 2195 2196 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2197 return -TARGET_EFAULT; 2198 } 2199 2200 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2201 2202 ret = get_errno(setsockopt(sockfd, level, optname, 2203 &pki, sizeof(pki))); 2204 break; 2205 } 2206 case IPV6_ADD_MEMBERSHIP: 2207 case IPV6_DROP_MEMBERSHIP: 2208 { 2209 struct ipv6_mreq ipv6mreq; 2210 2211 if (optlen < sizeof(ipv6mreq)) { 2212 return -TARGET_EINVAL; 2213 } 2214 2215 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { 2216 return -TARGET_EFAULT; 2217 } 2218 2219 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface); 2220 2221 ret = get_errno(setsockopt(sockfd, level, optname, 2222 &ipv6mreq, sizeof(ipv6mreq))); 2223 break; 2224 } 2225 default: 2226 goto unimplemented; 2227 } 2228 break; 2229 case SOL_ICMPV6: 2230 switch (optname) { 2231 case ICMPV6_FILTER: 2232 { 2233 struct icmp6_filter icmp6f; 2234 2235 if (optlen > sizeof(icmp6f)) { 2236 optlen = sizeof(icmp6f); 2237 } 2238 2239 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2240 return -TARGET_EFAULT; 2241 } 2242 2243 for (val = 0; val < 8; val++) { 2244 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2245 } 2246 2247 ret = get_errno(setsockopt(sockfd, level, optname, 2248 &icmp6f, optlen)); 2249 break; 2250 } 2251 default: 2252 goto unimplemented; 2253 } 2254 break; 2255 case SOL_RAW: 2256 switch (optname) { 2257 case ICMP_FILTER: 2258 case IPV6_CHECKSUM: 2259 /* those take an u32 value */ 2260 if (optlen < sizeof(uint32_t)) { 2261 return -TARGET_EINVAL; 2262 } 2263 2264 if (get_user_u32(val, optval_addr)) { 2265 return -TARGET_EFAULT; 2266 } 2267 ret = get_errno(setsockopt(sockfd, level, optname, 2268 &val, sizeof(val))); 2269 break; 2270 2271 default: 2272 goto unimplemented; 2273 } 2274 break; 2275 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE) 2276 case SOL_ALG: 2277 switch (optname) { 2278 case ALG_SET_KEY: 2279 { 2280 char *alg_key = g_malloc(optlen); 2281 2282 if (!alg_key) { 2283 return -TARGET_ENOMEM; 2284 } 2285 if (copy_from_user(alg_key, optval_addr, optlen)) { 2286 g_free(alg_key); 2287 return -TARGET_EFAULT; 2288 } 2289 ret = get_errno(setsockopt(sockfd, level, optname, 2290 alg_key, optlen)); 2291 g_free(alg_key); 2292 break; 2293 } 2294 case ALG_SET_AEAD_AUTHSIZE: 2295 { 2296 ret = get_errno(setsockopt(sockfd, level, optname, 2297 NULL, optlen)); 2298 break; 2299 } 2300 default: 2301 goto unimplemented; 2302 } 2303 break; 2304 #endif 2305 case TARGET_SOL_SOCKET: 2306 switch (optname) { 2307 case TARGET_SO_RCVTIMEO: 2308 { 2309 struct timeval tv; 2310 2311 optname = SO_RCVTIMEO; 2312 2313 set_timeout: 2314 if (optlen != sizeof(struct target_timeval)) { 2315 return -TARGET_EINVAL; 2316 } 2317 2318 if (copy_from_user_timeval(&tv, optval_addr)) { 2319 return -TARGET_EFAULT; 2320 } 2321 2322 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2323 &tv, sizeof(tv))); 2324 return ret; 2325 } 2326 case TARGET_SO_SNDTIMEO: 2327 optname = SO_SNDTIMEO; 2328 goto set_timeout; 2329 case TARGET_SO_ATTACH_FILTER: 2330 { 2331 struct target_sock_fprog *tfprog; 2332 struct target_sock_filter *tfilter; 2333 struct sock_fprog fprog; 2334 struct sock_filter *filter; 2335 int i; 2336 2337 if (optlen != sizeof(*tfprog)) { 2338 return -TARGET_EINVAL; 2339 } 2340 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 2341 return -TARGET_EFAULT; 2342 } 2343 if (!lock_user_struct(VERIFY_READ, tfilter, 2344 tswapal(tfprog->filter), 0)) { 2345 unlock_user_struct(tfprog, optval_addr, 1); 2346 return -TARGET_EFAULT; 2347 } 2348 2349 fprog.len = tswap16(tfprog->len); 2350 filter = g_try_new(struct sock_filter, fprog.len); 2351 if (filter == NULL) { 2352 unlock_user_struct(tfilter, tfprog->filter, 1); 2353 unlock_user_struct(tfprog, optval_addr, 1); 2354 return -TARGET_ENOMEM; 2355 } 2356 for (i = 0; i < fprog.len; i++) { 2357 filter[i].code = tswap16(tfilter[i].code); 2358 filter[i].jt = tfilter[i].jt; 2359 filter[i].jf = tfilter[i].jf; 2360 filter[i].k = tswap32(tfilter[i].k); 2361 } 2362 fprog.filter = filter; 2363 2364 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 2365 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 2366 g_free(filter); 2367 2368 unlock_user_struct(tfilter, tfprog->filter, 1); 2369 unlock_user_struct(tfprog, optval_addr, 1); 2370 return ret; 2371 } 2372 case TARGET_SO_BINDTODEVICE: 2373 { 2374 char *dev_ifname, *addr_ifname; 2375 2376 if (optlen > IFNAMSIZ - 1) { 2377 optlen = IFNAMSIZ - 1; 2378 } 2379 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2380 if (!dev_ifname) { 2381 return -TARGET_EFAULT; 2382 } 2383 optname = SO_BINDTODEVICE; 2384 addr_ifname = alloca(IFNAMSIZ); 2385 memcpy(addr_ifname, dev_ifname, optlen); 2386 addr_ifname[optlen] = 0; 2387 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2388 addr_ifname, optlen)); 2389 unlock_user (dev_ifname, optval_addr, 0); 2390 return ret; 2391 } 2392 case TARGET_SO_LINGER: 2393 { 2394 struct linger lg; 2395 struct target_linger *tlg; 2396 2397 if (optlen != sizeof(struct target_linger)) { 2398 return -TARGET_EINVAL; 2399 } 2400 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) { 2401 return -TARGET_EFAULT; 2402 } 2403 __get_user(lg.l_onoff, &tlg->l_onoff); 2404 __get_user(lg.l_linger, &tlg->l_linger); 2405 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER, 2406 &lg, sizeof(lg))); 2407 unlock_user_struct(tlg, optval_addr, 0); 2408 return ret; 2409 } 2410 /* Options with 'int' argument. */ 2411 case TARGET_SO_DEBUG: 2412 optname = SO_DEBUG; 2413 break; 2414 case TARGET_SO_REUSEADDR: 2415 optname = SO_REUSEADDR; 2416 break; 2417 #ifdef SO_REUSEPORT 2418 case TARGET_SO_REUSEPORT: 2419 optname = SO_REUSEPORT; 2420 break; 2421 #endif 2422 case TARGET_SO_TYPE: 2423 optname = SO_TYPE; 2424 break; 2425 case TARGET_SO_ERROR: 2426 optname = SO_ERROR; 2427 break; 2428 case TARGET_SO_DONTROUTE: 2429 optname = SO_DONTROUTE; 2430 break; 2431 case TARGET_SO_BROADCAST: 2432 optname = SO_BROADCAST; 2433 break; 2434 case TARGET_SO_SNDBUF: 2435 optname = SO_SNDBUF; 2436 break; 2437 case TARGET_SO_SNDBUFFORCE: 2438 optname = SO_SNDBUFFORCE; 2439 break; 2440 case TARGET_SO_RCVBUF: 2441 optname = SO_RCVBUF; 2442 break; 2443 case TARGET_SO_RCVBUFFORCE: 2444 optname = SO_RCVBUFFORCE; 2445 break; 2446 case TARGET_SO_KEEPALIVE: 2447 optname = SO_KEEPALIVE; 2448 break; 2449 case TARGET_SO_OOBINLINE: 2450 optname = SO_OOBINLINE; 2451 break; 2452 case TARGET_SO_NO_CHECK: 2453 optname = SO_NO_CHECK; 2454 break; 2455 case TARGET_SO_PRIORITY: 2456 optname = SO_PRIORITY; 2457 break; 2458 #ifdef SO_BSDCOMPAT 2459 case TARGET_SO_BSDCOMPAT: 2460 optname = SO_BSDCOMPAT; 2461 break; 2462 #endif 2463 case TARGET_SO_PASSCRED: 2464 optname = SO_PASSCRED; 2465 break; 2466 case TARGET_SO_PASSSEC: 2467 optname = SO_PASSSEC; 2468 break; 2469 case TARGET_SO_TIMESTAMP: 2470 optname = SO_TIMESTAMP; 2471 break; 2472 case TARGET_SO_RCVLOWAT: 2473 optname = SO_RCVLOWAT; 2474 break; 2475 default: 2476 goto unimplemented; 2477 } 2478 if (optlen < sizeof(uint32_t)) 2479 return -TARGET_EINVAL; 2480 2481 if (get_user_u32(val, optval_addr)) 2482 return -TARGET_EFAULT; 2483 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 2484 break; 2485 #ifdef SOL_NETLINK 2486 case SOL_NETLINK: 2487 switch (optname) { 2488 case NETLINK_PKTINFO: 2489 case NETLINK_ADD_MEMBERSHIP: 2490 case NETLINK_DROP_MEMBERSHIP: 2491 case NETLINK_BROADCAST_ERROR: 2492 case NETLINK_NO_ENOBUFS: 2493 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2494 case NETLINK_LISTEN_ALL_NSID: 2495 case NETLINK_CAP_ACK: 2496 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2497 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2498 case NETLINK_EXT_ACK: 2499 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2500 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2501 case NETLINK_GET_STRICT_CHK: 2502 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2503 break; 2504 default: 2505 goto unimplemented; 2506 } 2507 val = 0; 2508 if (optlen < sizeof(uint32_t)) { 2509 return -TARGET_EINVAL; 2510 } 2511 if (get_user_u32(val, optval_addr)) { 2512 return -TARGET_EFAULT; 2513 } 2514 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val, 2515 sizeof(val))); 2516 break; 2517 #endif /* SOL_NETLINK */ 2518 default: 2519 unimplemented: 2520 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n", 2521 level, optname); 2522 ret = -TARGET_ENOPROTOOPT; 2523 } 2524 return ret; 2525 } 2526 2527 /* do_getsockopt() Must return target values and target errnos. */ 2528 static abi_long do_getsockopt(int sockfd, int level, int optname, 2529 abi_ulong optval_addr, abi_ulong optlen) 2530 { 2531 abi_long ret; 2532 int len, val; 2533 socklen_t lv; 2534 2535 switch(level) { 2536 case TARGET_SOL_SOCKET: 2537 level = SOL_SOCKET; 2538 switch (optname) { 2539 /* These don't just return a single integer */ 2540 case TARGET_SO_PEERNAME: 2541 goto unimplemented; 2542 case TARGET_SO_RCVTIMEO: { 2543 struct timeval tv; 2544 socklen_t tvlen; 2545 2546 optname = SO_RCVTIMEO; 2547 2548 get_timeout: 2549 if (get_user_u32(len, optlen)) { 2550 return -TARGET_EFAULT; 2551 } 2552 if (len < 0) { 2553 return -TARGET_EINVAL; 2554 } 2555 2556 tvlen = sizeof(tv); 2557 ret = get_errno(getsockopt(sockfd, level, optname, 2558 &tv, &tvlen)); 2559 if (ret < 0) { 2560 return ret; 2561 } 2562 if (len > sizeof(struct target_timeval)) { 2563 len = sizeof(struct target_timeval); 2564 } 2565 if (copy_to_user_timeval(optval_addr, &tv)) { 2566 return -TARGET_EFAULT; 2567 } 2568 if (put_user_u32(len, optlen)) { 2569 return -TARGET_EFAULT; 2570 } 2571 break; 2572 } 2573 case TARGET_SO_SNDTIMEO: 2574 optname = SO_SNDTIMEO; 2575 goto get_timeout; 2576 case TARGET_SO_PEERCRED: { 2577 struct ucred cr; 2578 socklen_t crlen; 2579 struct target_ucred *tcr; 2580 2581 if (get_user_u32(len, optlen)) { 2582 return -TARGET_EFAULT; 2583 } 2584 if (len < 0) { 2585 return -TARGET_EINVAL; 2586 } 2587 2588 crlen = sizeof(cr); 2589 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 2590 &cr, &crlen)); 2591 if (ret < 0) { 2592 return ret; 2593 } 2594 if (len > crlen) { 2595 len = crlen; 2596 } 2597 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 2598 return -TARGET_EFAULT; 2599 } 2600 __put_user(cr.pid, &tcr->pid); 2601 __put_user(cr.uid, &tcr->uid); 2602 __put_user(cr.gid, &tcr->gid); 2603 unlock_user_struct(tcr, optval_addr, 1); 2604 if (put_user_u32(len, optlen)) { 2605 return -TARGET_EFAULT; 2606 } 2607 break; 2608 } 2609 case TARGET_SO_PEERSEC: { 2610 char *name; 2611 2612 if (get_user_u32(len, optlen)) { 2613 return -TARGET_EFAULT; 2614 } 2615 if (len < 0) { 2616 return -TARGET_EINVAL; 2617 } 2618 name = lock_user(VERIFY_WRITE, optval_addr, len, 0); 2619 if (!name) { 2620 return -TARGET_EFAULT; 2621 } 2622 lv = len; 2623 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC, 2624 name, &lv)); 2625 if (put_user_u32(lv, optlen)) { 2626 ret = -TARGET_EFAULT; 2627 } 2628 unlock_user(name, optval_addr, lv); 2629 break; 2630 } 2631 case TARGET_SO_LINGER: 2632 { 2633 struct linger lg; 2634 socklen_t lglen; 2635 struct target_linger *tlg; 2636 2637 if (get_user_u32(len, optlen)) { 2638 return -TARGET_EFAULT; 2639 } 2640 if (len < 0) { 2641 return -TARGET_EINVAL; 2642 } 2643 2644 lglen = sizeof(lg); 2645 ret = get_errno(getsockopt(sockfd, level, SO_LINGER, 2646 &lg, &lglen)); 2647 if (ret < 0) { 2648 return ret; 2649 } 2650 if (len > lglen) { 2651 len = lglen; 2652 } 2653 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) { 2654 return -TARGET_EFAULT; 2655 } 2656 __put_user(lg.l_onoff, &tlg->l_onoff); 2657 __put_user(lg.l_linger, &tlg->l_linger); 2658 unlock_user_struct(tlg, optval_addr, 1); 2659 if (put_user_u32(len, optlen)) { 2660 return -TARGET_EFAULT; 2661 } 2662 break; 2663 } 2664 /* Options with 'int' argument. */ 2665 case TARGET_SO_DEBUG: 2666 optname = SO_DEBUG; 2667 goto int_case; 2668 case TARGET_SO_REUSEADDR: 2669 optname = SO_REUSEADDR; 2670 goto int_case; 2671 #ifdef SO_REUSEPORT 2672 case TARGET_SO_REUSEPORT: 2673 optname = SO_REUSEPORT; 2674 goto int_case; 2675 #endif 2676 case TARGET_SO_TYPE: 2677 optname = SO_TYPE; 2678 goto int_case; 2679 case TARGET_SO_ERROR: 2680 optname = SO_ERROR; 2681 goto int_case; 2682 case TARGET_SO_DONTROUTE: 2683 optname = SO_DONTROUTE; 2684 goto int_case; 2685 case TARGET_SO_BROADCAST: 2686 optname = SO_BROADCAST; 2687 goto int_case; 2688 case TARGET_SO_SNDBUF: 2689 optname = SO_SNDBUF; 2690 goto int_case; 2691 case TARGET_SO_RCVBUF: 2692 optname = SO_RCVBUF; 2693 goto int_case; 2694 case TARGET_SO_KEEPALIVE: 2695 optname = SO_KEEPALIVE; 2696 goto int_case; 2697 case TARGET_SO_OOBINLINE: 2698 optname = SO_OOBINLINE; 2699 goto int_case; 2700 case TARGET_SO_NO_CHECK: 2701 optname = SO_NO_CHECK; 2702 goto int_case; 2703 case TARGET_SO_PRIORITY: 2704 optname = SO_PRIORITY; 2705 goto int_case; 2706 #ifdef SO_BSDCOMPAT 2707 case TARGET_SO_BSDCOMPAT: 2708 optname = SO_BSDCOMPAT; 2709 goto int_case; 2710 #endif 2711 case TARGET_SO_PASSCRED: 2712 optname = SO_PASSCRED; 2713 goto int_case; 2714 case TARGET_SO_TIMESTAMP: 2715 optname = SO_TIMESTAMP; 2716 goto int_case; 2717 case TARGET_SO_RCVLOWAT: 2718 optname = SO_RCVLOWAT; 2719 goto int_case; 2720 case TARGET_SO_ACCEPTCONN: 2721 optname = SO_ACCEPTCONN; 2722 goto int_case; 2723 case TARGET_SO_PROTOCOL: 2724 optname = SO_PROTOCOL; 2725 goto int_case; 2726 case TARGET_SO_DOMAIN: 2727 optname = SO_DOMAIN; 2728 goto int_case; 2729 default: 2730 goto int_case; 2731 } 2732 break; 2733 case SOL_TCP: 2734 case SOL_UDP: 2735 /* TCP and UDP options all take an 'int' value. */ 2736 int_case: 2737 if (get_user_u32(len, optlen)) 2738 return -TARGET_EFAULT; 2739 if (len < 0) 2740 return -TARGET_EINVAL; 2741 lv = sizeof(lv); 2742 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2743 if (ret < 0) 2744 return ret; 2745 switch (optname) { 2746 case SO_TYPE: 2747 val = host_to_target_sock_type(val); 2748 break; 2749 case SO_ERROR: 2750 val = host_to_target_errno(val); 2751 break; 2752 } 2753 if (len > lv) 2754 len = lv; 2755 if (len == 4) { 2756 if (put_user_u32(val, optval_addr)) 2757 return -TARGET_EFAULT; 2758 } else { 2759 if (put_user_u8(val, optval_addr)) 2760 return -TARGET_EFAULT; 2761 } 2762 if (put_user_u32(len, optlen)) 2763 return -TARGET_EFAULT; 2764 break; 2765 case SOL_IP: 2766 switch(optname) { 2767 case IP_TOS: 2768 case IP_TTL: 2769 case IP_HDRINCL: 2770 case IP_ROUTER_ALERT: 2771 case IP_RECVOPTS: 2772 case IP_RETOPTS: 2773 case IP_PKTINFO: 2774 case IP_MTU_DISCOVER: 2775 case IP_RECVERR: 2776 case IP_RECVTOS: 2777 #ifdef IP_FREEBIND 2778 case IP_FREEBIND: 2779 #endif 2780 case IP_MULTICAST_TTL: 2781 case IP_MULTICAST_LOOP: 2782 if (get_user_u32(len, optlen)) 2783 return -TARGET_EFAULT; 2784 if (len < 0) 2785 return -TARGET_EINVAL; 2786 lv = sizeof(lv); 2787 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2788 if (ret < 0) 2789 return ret; 2790 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2791 len = 1; 2792 if (put_user_u32(len, optlen) 2793 || put_user_u8(val, optval_addr)) 2794 return -TARGET_EFAULT; 2795 } else { 2796 if (len > sizeof(int)) 2797 len = sizeof(int); 2798 if (put_user_u32(len, optlen) 2799 || put_user_u32(val, optval_addr)) 2800 return -TARGET_EFAULT; 2801 } 2802 break; 2803 default: 2804 ret = -TARGET_ENOPROTOOPT; 2805 break; 2806 } 2807 break; 2808 case SOL_IPV6: 2809 switch (optname) { 2810 case IPV6_MTU_DISCOVER: 2811 case IPV6_MTU: 2812 case IPV6_V6ONLY: 2813 case IPV6_RECVPKTINFO: 2814 case IPV6_UNICAST_HOPS: 2815 case IPV6_MULTICAST_HOPS: 2816 case IPV6_MULTICAST_LOOP: 2817 case IPV6_RECVERR: 2818 case IPV6_RECVHOPLIMIT: 2819 case IPV6_2292HOPLIMIT: 2820 case IPV6_CHECKSUM: 2821 case IPV6_ADDRFORM: 2822 case IPV6_2292PKTINFO: 2823 case IPV6_RECVTCLASS: 2824 case IPV6_RECVRTHDR: 2825 case IPV6_2292RTHDR: 2826 case IPV6_RECVHOPOPTS: 2827 case IPV6_2292HOPOPTS: 2828 case IPV6_RECVDSTOPTS: 2829 case IPV6_2292DSTOPTS: 2830 case IPV6_TCLASS: 2831 case IPV6_ADDR_PREFERENCES: 2832 #ifdef IPV6_RECVPATHMTU 2833 case IPV6_RECVPATHMTU: 2834 #endif 2835 #ifdef IPV6_TRANSPARENT 2836 case IPV6_TRANSPARENT: 2837 #endif 2838 #ifdef IPV6_FREEBIND 2839 case IPV6_FREEBIND: 2840 #endif 2841 #ifdef IPV6_RECVORIGDSTADDR 2842 case IPV6_RECVORIGDSTADDR: 2843 #endif 2844 if (get_user_u32(len, optlen)) 2845 return -TARGET_EFAULT; 2846 if (len < 0) 2847 return -TARGET_EINVAL; 2848 lv = sizeof(lv); 2849 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2850 if (ret < 0) 2851 return ret; 2852 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2853 len = 1; 2854 if (put_user_u32(len, optlen) 2855 || put_user_u8(val, optval_addr)) 2856 return -TARGET_EFAULT; 2857 } else { 2858 if (len > sizeof(int)) 2859 len = sizeof(int); 2860 if (put_user_u32(len, optlen) 2861 || put_user_u32(val, optval_addr)) 2862 return -TARGET_EFAULT; 2863 } 2864 break; 2865 default: 2866 ret = -TARGET_ENOPROTOOPT; 2867 break; 2868 } 2869 break; 2870 #ifdef SOL_NETLINK 2871 case SOL_NETLINK: 2872 switch (optname) { 2873 case NETLINK_PKTINFO: 2874 case NETLINK_BROADCAST_ERROR: 2875 case NETLINK_NO_ENOBUFS: 2876 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2877 case NETLINK_LISTEN_ALL_NSID: 2878 case NETLINK_CAP_ACK: 2879 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2880 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2881 case NETLINK_EXT_ACK: 2882 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2883 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2884 case NETLINK_GET_STRICT_CHK: 2885 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2886 if (get_user_u32(len, optlen)) { 2887 return -TARGET_EFAULT; 2888 } 2889 if (len != sizeof(val)) { 2890 return -TARGET_EINVAL; 2891 } 2892 lv = len; 2893 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2894 if (ret < 0) { 2895 return ret; 2896 } 2897 if (put_user_u32(lv, optlen) 2898 || put_user_u32(val, optval_addr)) { 2899 return -TARGET_EFAULT; 2900 } 2901 break; 2902 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2903 case NETLINK_LIST_MEMBERSHIPS: 2904 { 2905 uint32_t *results; 2906 int i; 2907 if (get_user_u32(len, optlen)) { 2908 return -TARGET_EFAULT; 2909 } 2910 if (len < 0) { 2911 return -TARGET_EINVAL; 2912 } 2913 results = lock_user(VERIFY_WRITE, optval_addr, len, 1); 2914 if (!results && len > 0) { 2915 return -TARGET_EFAULT; 2916 } 2917 lv = len; 2918 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv)); 2919 if (ret < 0) { 2920 unlock_user(results, optval_addr, 0); 2921 return ret; 2922 } 2923 /* swap host endianess to target endianess. */ 2924 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 2925 results[i] = tswap32(results[i]); 2926 } 2927 if (put_user_u32(lv, optlen)) { 2928 return -TARGET_EFAULT; 2929 } 2930 unlock_user(results, optval_addr, 0); 2931 break; 2932 } 2933 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2934 default: 2935 goto unimplemented; 2936 } 2937 break; 2938 #endif /* SOL_NETLINK */ 2939 default: 2940 unimplemented: 2941 qemu_log_mask(LOG_UNIMP, 2942 "getsockopt level=%d optname=%d not yet supported\n", 2943 level, optname); 2944 ret = -TARGET_EOPNOTSUPP; 2945 break; 2946 } 2947 return ret; 2948 } 2949 2950 /* Convert target low/high pair representing file offset into the host 2951 * low/high pair. This function doesn't handle offsets bigger than 64 bits 2952 * as the kernel doesn't handle them either. 2953 */ 2954 static void target_to_host_low_high(abi_ulong tlow, 2955 abi_ulong thigh, 2956 unsigned long *hlow, 2957 unsigned long *hhigh) 2958 { 2959 uint64_t off = tlow | 2960 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) << 2961 TARGET_LONG_BITS / 2; 2962 2963 *hlow = off; 2964 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2; 2965 } 2966 2967 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 2968 abi_ulong count, int copy) 2969 { 2970 struct target_iovec *target_vec; 2971 struct iovec *vec; 2972 abi_ulong total_len, max_len; 2973 int i; 2974 int err = 0; 2975 bool bad_address = false; 2976 2977 if (count == 0) { 2978 errno = 0; 2979 return NULL; 2980 } 2981 if (count > IOV_MAX) { 2982 errno = EINVAL; 2983 return NULL; 2984 } 2985 2986 vec = g_try_new0(struct iovec, count); 2987 if (vec == NULL) { 2988 errno = ENOMEM; 2989 return NULL; 2990 } 2991 2992 target_vec = lock_user(VERIFY_READ, target_addr, 2993 count * sizeof(struct target_iovec), 1); 2994 if (target_vec == NULL) { 2995 err = EFAULT; 2996 goto fail2; 2997 } 2998 2999 /* ??? If host page size > target page size, this will result in a 3000 value larger than what we can actually support. */ 3001 max_len = 0x7fffffff & TARGET_PAGE_MASK; 3002 total_len = 0; 3003 3004 for (i = 0; i < count; i++) { 3005 abi_ulong base = tswapal(target_vec[i].iov_base); 3006 abi_long len = tswapal(target_vec[i].iov_len); 3007 3008 if (len < 0) { 3009 err = EINVAL; 3010 goto fail; 3011 } else if (len == 0) { 3012 /* Zero length pointer is ignored. */ 3013 vec[i].iov_base = 0; 3014 } else { 3015 vec[i].iov_base = lock_user(type, base, len, copy); 3016 /* If the first buffer pointer is bad, this is a fault. But 3017 * subsequent bad buffers will result in a partial write; this 3018 * is realized by filling the vector with null pointers and 3019 * zero lengths. */ 3020 if (!vec[i].iov_base) { 3021 if (i == 0) { 3022 err = EFAULT; 3023 goto fail; 3024 } else { 3025 bad_address = true; 3026 } 3027 } 3028 if (bad_address) { 3029 len = 0; 3030 } 3031 if (len > max_len - total_len) { 3032 len = max_len - total_len; 3033 } 3034 } 3035 vec[i].iov_len = len; 3036 total_len += len; 3037 } 3038 3039 unlock_user(target_vec, target_addr, 0); 3040 return vec; 3041 3042 fail: 3043 while (--i >= 0) { 3044 if (tswapal(target_vec[i].iov_len) > 0) { 3045 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 3046 } 3047 } 3048 unlock_user(target_vec, target_addr, 0); 3049 fail2: 3050 g_free(vec); 3051 errno = err; 3052 return NULL; 3053 } 3054 3055 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 3056 abi_ulong count, int copy) 3057 { 3058 struct target_iovec *target_vec; 3059 int i; 3060 3061 target_vec = lock_user(VERIFY_READ, target_addr, 3062 count * sizeof(struct target_iovec), 1); 3063 if (target_vec) { 3064 for (i = 0; i < count; i++) { 3065 abi_ulong base = tswapal(target_vec[i].iov_base); 3066 abi_long len = tswapal(target_vec[i].iov_len); 3067 if (len < 0) { 3068 break; 3069 } 3070 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 3071 } 3072 unlock_user(target_vec, target_addr, 0); 3073 } 3074 3075 g_free(vec); 3076 } 3077 3078 static inline int target_to_host_sock_type(int *type) 3079 { 3080 int host_type = 0; 3081 int target_type = *type; 3082 3083 switch (target_type & TARGET_SOCK_TYPE_MASK) { 3084 case TARGET_SOCK_DGRAM: 3085 host_type = SOCK_DGRAM; 3086 break; 3087 case TARGET_SOCK_STREAM: 3088 host_type = SOCK_STREAM; 3089 break; 3090 default: 3091 host_type = target_type & TARGET_SOCK_TYPE_MASK; 3092 break; 3093 } 3094 if (target_type & TARGET_SOCK_CLOEXEC) { 3095 #if defined(SOCK_CLOEXEC) 3096 host_type |= SOCK_CLOEXEC; 3097 #else 3098 return -TARGET_EINVAL; 3099 #endif 3100 } 3101 if (target_type & TARGET_SOCK_NONBLOCK) { 3102 #if defined(SOCK_NONBLOCK) 3103 host_type |= SOCK_NONBLOCK; 3104 #elif !defined(O_NONBLOCK) 3105 return -TARGET_EINVAL; 3106 #endif 3107 } 3108 *type = host_type; 3109 return 0; 3110 } 3111 3112 /* Try to emulate socket type flags after socket creation. */ 3113 static int sock_flags_fixup(int fd, int target_type) 3114 { 3115 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 3116 if (target_type & TARGET_SOCK_NONBLOCK) { 3117 int flags = fcntl(fd, F_GETFL); 3118 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 3119 close(fd); 3120 return -TARGET_EINVAL; 3121 } 3122 } 3123 #endif 3124 return fd; 3125 } 3126 3127 /* do_socket() Must return target values and target errnos. */ 3128 static abi_long do_socket(int domain, int type, int protocol) 3129 { 3130 int target_type = type; 3131 int ret; 3132 3133 ret = target_to_host_sock_type(&type); 3134 if (ret) { 3135 return ret; 3136 } 3137 3138 if (domain == PF_NETLINK && !( 3139 #ifdef CONFIG_RTNETLINK 3140 protocol == NETLINK_ROUTE || 3141 #endif 3142 protocol == NETLINK_KOBJECT_UEVENT || 3143 protocol == NETLINK_AUDIT)) { 3144 return -TARGET_EPROTONOSUPPORT; 3145 } 3146 3147 if (domain == AF_PACKET || 3148 (domain == AF_INET && type == SOCK_PACKET)) { 3149 protocol = tswap16(protocol); 3150 } 3151 3152 ret = get_errno(socket(domain, type, protocol)); 3153 if (ret >= 0) { 3154 ret = sock_flags_fixup(ret, target_type); 3155 if (type == SOCK_PACKET) { 3156 /* Manage an obsolete case : 3157 * if socket type is SOCK_PACKET, bind by name 3158 */ 3159 fd_trans_register(ret, &target_packet_trans); 3160 } else if (domain == PF_NETLINK) { 3161 switch (protocol) { 3162 #ifdef CONFIG_RTNETLINK 3163 case NETLINK_ROUTE: 3164 fd_trans_register(ret, &target_netlink_route_trans); 3165 break; 3166 #endif 3167 case NETLINK_KOBJECT_UEVENT: 3168 /* nothing to do: messages are strings */ 3169 break; 3170 case NETLINK_AUDIT: 3171 fd_trans_register(ret, &target_netlink_audit_trans); 3172 break; 3173 default: 3174 g_assert_not_reached(); 3175 } 3176 } 3177 } 3178 return ret; 3179 } 3180 3181 /* do_bind() Must return target values and target errnos. */ 3182 static abi_long do_bind(int sockfd, abi_ulong target_addr, 3183 socklen_t addrlen) 3184 { 3185 void *addr; 3186 abi_long ret; 3187 3188 if ((int)addrlen < 0) { 3189 return -TARGET_EINVAL; 3190 } 3191 3192 addr = alloca(addrlen+1); 3193 3194 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3195 if (ret) 3196 return ret; 3197 3198 return get_errno(bind(sockfd, addr, addrlen)); 3199 } 3200 3201 /* do_connect() Must return target values and target errnos. */ 3202 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3203 socklen_t addrlen) 3204 { 3205 void *addr; 3206 abi_long ret; 3207 3208 if ((int)addrlen < 0) { 3209 return -TARGET_EINVAL; 3210 } 3211 3212 addr = alloca(addrlen+1); 3213 3214 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3215 if (ret) 3216 return ret; 3217 3218 return get_errno(safe_connect(sockfd, addr, addrlen)); 3219 } 3220 3221 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3222 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3223 int flags, int send) 3224 { 3225 abi_long ret, len; 3226 struct msghdr msg; 3227 abi_ulong count; 3228 struct iovec *vec; 3229 abi_ulong target_vec; 3230 3231 if (msgp->msg_name) { 3232 msg.msg_namelen = tswap32(msgp->msg_namelen); 3233 msg.msg_name = alloca(msg.msg_namelen+1); 3234 ret = target_to_host_sockaddr(fd, msg.msg_name, 3235 tswapal(msgp->msg_name), 3236 msg.msg_namelen); 3237 if (ret == -TARGET_EFAULT) { 3238 /* For connected sockets msg_name and msg_namelen must 3239 * be ignored, so returning EFAULT immediately is wrong. 3240 * Instead, pass a bad msg_name to the host kernel, and 3241 * let it decide whether to return EFAULT or not. 3242 */ 3243 msg.msg_name = (void *)-1; 3244 } else if (ret) { 3245 goto out2; 3246 } 3247 } else { 3248 msg.msg_name = NULL; 3249 msg.msg_namelen = 0; 3250 } 3251 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3252 msg.msg_control = alloca(msg.msg_controllen); 3253 memset(msg.msg_control, 0, msg.msg_controllen); 3254 3255 msg.msg_flags = tswap32(msgp->msg_flags); 3256 3257 count = tswapal(msgp->msg_iovlen); 3258 target_vec = tswapal(msgp->msg_iov); 3259 3260 if (count > IOV_MAX) { 3261 /* sendrcvmsg returns a different errno for this condition than 3262 * readv/writev, so we must catch it here before lock_iovec() does. 3263 */ 3264 ret = -TARGET_EMSGSIZE; 3265 goto out2; 3266 } 3267 3268 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3269 target_vec, count, send); 3270 if (vec == NULL) { 3271 ret = -host_to_target_errno(errno); 3272 /* allow sending packet without any iov, e.g. with MSG_MORE flag */ 3273 if (!send || ret) { 3274 goto out2; 3275 } 3276 } 3277 msg.msg_iovlen = count; 3278 msg.msg_iov = vec; 3279 3280 if (send) { 3281 if (fd_trans_target_to_host_data(fd)) { 3282 void *host_msg; 3283 3284 host_msg = g_malloc(msg.msg_iov->iov_len); 3285 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3286 ret = fd_trans_target_to_host_data(fd)(host_msg, 3287 msg.msg_iov->iov_len); 3288 if (ret >= 0) { 3289 msg.msg_iov->iov_base = host_msg; 3290 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3291 } 3292 g_free(host_msg); 3293 } else { 3294 ret = target_to_host_cmsg(&msg, msgp); 3295 if (ret == 0) { 3296 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3297 } 3298 } 3299 } else { 3300 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3301 if (!is_error(ret)) { 3302 len = ret; 3303 if (fd_trans_host_to_target_data(fd)) { 3304 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3305 MIN(msg.msg_iov->iov_len, len)); 3306 } 3307 if (!is_error(ret)) { 3308 ret = host_to_target_cmsg(msgp, &msg); 3309 } 3310 if (!is_error(ret)) { 3311 msgp->msg_namelen = tswap32(msg.msg_namelen); 3312 msgp->msg_flags = tswap32(msg.msg_flags); 3313 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3314 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3315 msg.msg_name, msg.msg_namelen); 3316 if (ret) { 3317 goto out; 3318 } 3319 } 3320 3321 ret = len; 3322 } 3323 } 3324 } 3325 3326 out: 3327 if (vec) { 3328 unlock_iovec(vec, target_vec, count, !send); 3329 } 3330 out2: 3331 return ret; 3332 } 3333 3334 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3335 int flags, int send) 3336 { 3337 abi_long ret; 3338 struct target_msghdr *msgp; 3339 3340 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3341 msgp, 3342 target_msg, 3343 send ? 1 : 0)) { 3344 return -TARGET_EFAULT; 3345 } 3346 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3347 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3348 return ret; 3349 } 3350 3351 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3352 * so it might not have this *mmsg-specific flag either. 3353 */ 3354 #ifndef MSG_WAITFORONE 3355 #define MSG_WAITFORONE 0x10000 3356 #endif 3357 3358 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3359 unsigned int vlen, unsigned int flags, 3360 int send) 3361 { 3362 struct target_mmsghdr *mmsgp; 3363 abi_long ret = 0; 3364 int i; 3365 3366 if (vlen > UIO_MAXIOV) { 3367 vlen = UIO_MAXIOV; 3368 } 3369 3370 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3371 if (!mmsgp) { 3372 return -TARGET_EFAULT; 3373 } 3374 3375 for (i = 0; i < vlen; i++) { 3376 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3377 if (is_error(ret)) { 3378 break; 3379 } 3380 mmsgp[i].msg_len = tswap32(ret); 3381 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3382 if (flags & MSG_WAITFORONE) { 3383 flags |= MSG_DONTWAIT; 3384 } 3385 } 3386 3387 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3388 3389 /* Return number of datagrams sent if we sent any at all; 3390 * otherwise return the error. 3391 */ 3392 if (i) { 3393 return i; 3394 } 3395 return ret; 3396 } 3397 3398 /* do_accept4() Must return target values and target errnos. */ 3399 static abi_long do_accept4(int fd, abi_ulong target_addr, 3400 abi_ulong target_addrlen_addr, int flags) 3401 { 3402 socklen_t addrlen, ret_addrlen; 3403 void *addr; 3404 abi_long ret; 3405 int host_flags; 3406 3407 if (flags & ~(TARGET_SOCK_CLOEXEC | TARGET_SOCK_NONBLOCK)) { 3408 return -TARGET_EINVAL; 3409 } 3410 3411 host_flags = 0; 3412 if (flags & TARGET_SOCK_NONBLOCK) { 3413 host_flags |= SOCK_NONBLOCK; 3414 } 3415 if (flags & TARGET_SOCK_CLOEXEC) { 3416 host_flags |= SOCK_CLOEXEC; 3417 } 3418 3419 if (target_addr == 0) { 3420 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3421 } 3422 3423 /* linux returns EFAULT if addrlen pointer is invalid */ 3424 if (get_user_u32(addrlen, target_addrlen_addr)) 3425 return -TARGET_EFAULT; 3426 3427 if ((int)addrlen < 0) { 3428 return -TARGET_EINVAL; 3429 } 3430 3431 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3432 return -TARGET_EFAULT; 3433 } 3434 3435 addr = alloca(addrlen); 3436 3437 ret_addrlen = addrlen; 3438 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags)); 3439 if (!is_error(ret)) { 3440 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3441 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3442 ret = -TARGET_EFAULT; 3443 } 3444 } 3445 return ret; 3446 } 3447 3448 /* do_getpeername() Must return target values and target errnos. */ 3449 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3450 abi_ulong target_addrlen_addr) 3451 { 3452 socklen_t addrlen, ret_addrlen; 3453 void *addr; 3454 abi_long ret; 3455 3456 if (get_user_u32(addrlen, target_addrlen_addr)) 3457 return -TARGET_EFAULT; 3458 3459 if ((int)addrlen < 0) { 3460 return -TARGET_EINVAL; 3461 } 3462 3463 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3464 return -TARGET_EFAULT; 3465 } 3466 3467 addr = alloca(addrlen); 3468 3469 ret_addrlen = addrlen; 3470 ret = get_errno(getpeername(fd, addr, &ret_addrlen)); 3471 if (!is_error(ret)) { 3472 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3473 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3474 ret = -TARGET_EFAULT; 3475 } 3476 } 3477 return ret; 3478 } 3479 3480 /* do_getsockname() Must return target values and target errnos. */ 3481 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3482 abi_ulong target_addrlen_addr) 3483 { 3484 socklen_t addrlen, ret_addrlen; 3485 void *addr; 3486 abi_long ret; 3487 3488 if (get_user_u32(addrlen, target_addrlen_addr)) 3489 return -TARGET_EFAULT; 3490 3491 if ((int)addrlen < 0) { 3492 return -TARGET_EINVAL; 3493 } 3494 3495 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3496 return -TARGET_EFAULT; 3497 } 3498 3499 addr = alloca(addrlen); 3500 3501 ret_addrlen = addrlen; 3502 ret = get_errno(getsockname(fd, addr, &ret_addrlen)); 3503 if (!is_error(ret)) { 3504 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3505 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3506 ret = -TARGET_EFAULT; 3507 } 3508 } 3509 return ret; 3510 } 3511 3512 /* do_socketpair() Must return target values and target errnos. */ 3513 static abi_long do_socketpair(int domain, int type, int protocol, 3514 abi_ulong target_tab_addr) 3515 { 3516 int tab[2]; 3517 abi_long ret; 3518 3519 target_to_host_sock_type(&type); 3520 3521 ret = get_errno(socketpair(domain, type, protocol, tab)); 3522 if (!is_error(ret)) { 3523 if (put_user_s32(tab[0], target_tab_addr) 3524 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3525 ret = -TARGET_EFAULT; 3526 } 3527 return ret; 3528 } 3529 3530 /* do_sendto() Must return target values and target errnos. */ 3531 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3532 abi_ulong target_addr, socklen_t addrlen) 3533 { 3534 void *addr; 3535 void *host_msg; 3536 void *copy_msg = NULL; 3537 abi_long ret; 3538 3539 if ((int)addrlen < 0) { 3540 return -TARGET_EINVAL; 3541 } 3542 3543 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3544 if (!host_msg) 3545 return -TARGET_EFAULT; 3546 if (fd_trans_target_to_host_data(fd)) { 3547 copy_msg = host_msg; 3548 host_msg = g_malloc(len); 3549 memcpy(host_msg, copy_msg, len); 3550 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3551 if (ret < 0) { 3552 goto fail; 3553 } 3554 } 3555 if (target_addr) { 3556 addr = alloca(addrlen+1); 3557 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3558 if (ret) { 3559 goto fail; 3560 } 3561 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3562 } else { 3563 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3564 } 3565 fail: 3566 if (copy_msg) { 3567 g_free(host_msg); 3568 host_msg = copy_msg; 3569 } 3570 unlock_user(host_msg, msg, 0); 3571 return ret; 3572 } 3573 3574 /* do_recvfrom() Must return target values and target errnos. */ 3575 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 3576 abi_ulong target_addr, 3577 abi_ulong target_addrlen) 3578 { 3579 socklen_t addrlen, ret_addrlen; 3580 void *addr; 3581 void *host_msg; 3582 abi_long ret; 3583 3584 if (!msg) { 3585 host_msg = NULL; 3586 } else { 3587 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 3588 if (!host_msg) { 3589 return -TARGET_EFAULT; 3590 } 3591 } 3592 if (target_addr) { 3593 if (get_user_u32(addrlen, target_addrlen)) { 3594 ret = -TARGET_EFAULT; 3595 goto fail; 3596 } 3597 if ((int)addrlen < 0) { 3598 ret = -TARGET_EINVAL; 3599 goto fail; 3600 } 3601 addr = alloca(addrlen); 3602 ret_addrlen = addrlen; 3603 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 3604 addr, &ret_addrlen)); 3605 } else { 3606 addr = NULL; /* To keep compiler quiet. */ 3607 addrlen = 0; /* To keep compiler quiet. */ 3608 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 3609 } 3610 if (!is_error(ret)) { 3611 if (fd_trans_host_to_target_data(fd)) { 3612 abi_long trans; 3613 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len)); 3614 if (is_error(trans)) { 3615 ret = trans; 3616 goto fail; 3617 } 3618 } 3619 if (target_addr) { 3620 host_to_target_sockaddr(target_addr, addr, 3621 MIN(addrlen, ret_addrlen)); 3622 if (put_user_u32(ret_addrlen, target_addrlen)) { 3623 ret = -TARGET_EFAULT; 3624 goto fail; 3625 } 3626 } 3627 unlock_user(host_msg, msg, len); 3628 } else { 3629 fail: 3630 unlock_user(host_msg, msg, 0); 3631 } 3632 return ret; 3633 } 3634 3635 #ifdef TARGET_NR_socketcall 3636 /* do_socketcall() must return target values and target errnos. */ 3637 static abi_long do_socketcall(int num, abi_ulong vptr) 3638 { 3639 static const unsigned nargs[] = { /* number of arguments per operation */ 3640 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 3641 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 3642 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 3643 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 3644 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 3645 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 3646 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 3647 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 3648 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 3649 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 3650 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 3651 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 3652 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 3653 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3654 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3655 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 3656 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 3657 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 3658 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 3659 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 3660 }; 3661 abi_long a[6]; /* max 6 args */ 3662 unsigned i; 3663 3664 /* check the range of the first argument num */ 3665 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 3666 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 3667 return -TARGET_EINVAL; 3668 } 3669 /* ensure we have space for args */ 3670 if (nargs[num] > ARRAY_SIZE(a)) { 3671 return -TARGET_EINVAL; 3672 } 3673 /* collect the arguments in a[] according to nargs[] */ 3674 for (i = 0; i < nargs[num]; ++i) { 3675 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 3676 return -TARGET_EFAULT; 3677 } 3678 } 3679 /* now when we have the args, invoke the appropriate underlying function */ 3680 switch (num) { 3681 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 3682 return do_socket(a[0], a[1], a[2]); 3683 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 3684 return do_bind(a[0], a[1], a[2]); 3685 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 3686 return do_connect(a[0], a[1], a[2]); 3687 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 3688 return get_errno(listen(a[0], a[1])); 3689 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 3690 return do_accept4(a[0], a[1], a[2], 0); 3691 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 3692 return do_getsockname(a[0], a[1], a[2]); 3693 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 3694 return do_getpeername(a[0], a[1], a[2]); 3695 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 3696 return do_socketpair(a[0], a[1], a[2], a[3]); 3697 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 3698 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 3699 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 3700 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 3701 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 3702 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 3703 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 3704 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 3705 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 3706 return get_errno(shutdown(a[0], a[1])); 3707 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3708 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 3709 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3710 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 3711 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 3712 return do_sendrecvmsg(a[0], a[1], a[2], 1); 3713 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 3714 return do_sendrecvmsg(a[0], a[1], a[2], 0); 3715 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 3716 return do_accept4(a[0], a[1], a[2], a[3]); 3717 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 3718 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 3719 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 3720 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 3721 default: 3722 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); 3723 return -TARGET_EINVAL; 3724 } 3725 } 3726 #endif 3727 3728 #define N_SHM_REGIONS 32 3729 3730 static struct shm_region { 3731 abi_ulong start; 3732 abi_ulong size; 3733 bool in_use; 3734 } shm_regions[N_SHM_REGIONS]; 3735 3736 #ifndef TARGET_SEMID64_DS 3737 /* asm-generic version of this struct */ 3738 struct target_semid64_ds 3739 { 3740 struct target_ipc_perm sem_perm; 3741 abi_ulong sem_otime; 3742 #if TARGET_ABI_BITS == 32 3743 abi_ulong __unused1; 3744 #endif 3745 abi_ulong sem_ctime; 3746 #if TARGET_ABI_BITS == 32 3747 abi_ulong __unused2; 3748 #endif 3749 abi_ulong sem_nsems; 3750 abi_ulong __unused3; 3751 abi_ulong __unused4; 3752 }; 3753 #endif 3754 3755 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 3756 abi_ulong target_addr) 3757 { 3758 struct target_ipc_perm *target_ip; 3759 struct target_semid64_ds *target_sd; 3760 3761 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3762 return -TARGET_EFAULT; 3763 target_ip = &(target_sd->sem_perm); 3764 host_ip->__key = tswap32(target_ip->__key); 3765 host_ip->uid = tswap32(target_ip->uid); 3766 host_ip->gid = tswap32(target_ip->gid); 3767 host_ip->cuid = tswap32(target_ip->cuid); 3768 host_ip->cgid = tswap32(target_ip->cgid); 3769 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3770 host_ip->mode = tswap32(target_ip->mode); 3771 #else 3772 host_ip->mode = tswap16(target_ip->mode); 3773 #endif 3774 #if defined(TARGET_PPC) 3775 host_ip->__seq = tswap32(target_ip->__seq); 3776 #else 3777 host_ip->__seq = tswap16(target_ip->__seq); 3778 #endif 3779 unlock_user_struct(target_sd, target_addr, 0); 3780 return 0; 3781 } 3782 3783 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 3784 struct ipc_perm *host_ip) 3785 { 3786 struct target_ipc_perm *target_ip; 3787 struct target_semid64_ds *target_sd; 3788 3789 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3790 return -TARGET_EFAULT; 3791 target_ip = &(target_sd->sem_perm); 3792 target_ip->__key = tswap32(host_ip->__key); 3793 target_ip->uid = tswap32(host_ip->uid); 3794 target_ip->gid = tswap32(host_ip->gid); 3795 target_ip->cuid = tswap32(host_ip->cuid); 3796 target_ip->cgid = tswap32(host_ip->cgid); 3797 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3798 target_ip->mode = tswap32(host_ip->mode); 3799 #else 3800 target_ip->mode = tswap16(host_ip->mode); 3801 #endif 3802 #if defined(TARGET_PPC) 3803 target_ip->__seq = tswap32(host_ip->__seq); 3804 #else 3805 target_ip->__seq = tswap16(host_ip->__seq); 3806 #endif 3807 unlock_user_struct(target_sd, target_addr, 1); 3808 return 0; 3809 } 3810 3811 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 3812 abi_ulong target_addr) 3813 { 3814 struct target_semid64_ds *target_sd; 3815 3816 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3817 return -TARGET_EFAULT; 3818 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 3819 return -TARGET_EFAULT; 3820 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 3821 host_sd->sem_otime = tswapal(target_sd->sem_otime); 3822 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 3823 unlock_user_struct(target_sd, target_addr, 0); 3824 return 0; 3825 } 3826 3827 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 3828 struct semid_ds *host_sd) 3829 { 3830 struct target_semid64_ds *target_sd; 3831 3832 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3833 return -TARGET_EFAULT; 3834 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 3835 return -TARGET_EFAULT; 3836 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 3837 target_sd->sem_otime = tswapal(host_sd->sem_otime); 3838 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 3839 unlock_user_struct(target_sd, target_addr, 1); 3840 return 0; 3841 } 3842 3843 struct target_seminfo { 3844 int semmap; 3845 int semmni; 3846 int semmns; 3847 int semmnu; 3848 int semmsl; 3849 int semopm; 3850 int semume; 3851 int semusz; 3852 int semvmx; 3853 int semaem; 3854 }; 3855 3856 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 3857 struct seminfo *host_seminfo) 3858 { 3859 struct target_seminfo *target_seminfo; 3860 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 3861 return -TARGET_EFAULT; 3862 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 3863 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 3864 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 3865 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 3866 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 3867 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 3868 __put_user(host_seminfo->semume, &target_seminfo->semume); 3869 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 3870 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 3871 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 3872 unlock_user_struct(target_seminfo, target_addr, 1); 3873 return 0; 3874 } 3875 3876 union semun { 3877 int val; 3878 struct semid_ds *buf; 3879 unsigned short *array; 3880 struct seminfo *__buf; 3881 }; 3882 3883 union target_semun { 3884 int val; 3885 abi_ulong buf; 3886 abi_ulong array; 3887 abi_ulong __buf; 3888 }; 3889 3890 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 3891 abi_ulong target_addr) 3892 { 3893 int nsems; 3894 unsigned short *array; 3895 union semun semun; 3896 struct semid_ds semid_ds; 3897 int i, ret; 3898 3899 semun.buf = &semid_ds; 3900 3901 ret = semctl(semid, 0, IPC_STAT, semun); 3902 if (ret == -1) 3903 return get_errno(ret); 3904 3905 nsems = semid_ds.sem_nsems; 3906 3907 *host_array = g_try_new(unsigned short, nsems); 3908 if (!*host_array) { 3909 return -TARGET_ENOMEM; 3910 } 3911 array = lock_user(VERIFY_READ, target_addr, 3912 nsems*sizeof(unsigned short), 1); 3913 if (!array) { 3914 g_free(*host_array); 3915 return -TARGET_EFAULT; 3916 } 3917 3918 for(i=0; i<nsems; i++) { 3919 __get_user((*host_array)[i], &array[i]); 3920 } 3921 unlock_user(array, target_addr, 0); 3922 3923 return 0; 3924 } 3925 3926 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 3927 unsigned short **host_array) 3928 { 3929 int nsems; 3930 unsigned short *array; 3931 union semun semun; 3932 struct semid_ds semid_ds; 3933 int i, ret; 3934 3935 semun.buf = &semid_ds; 3936 3937 ret = semctl(semid, 0, IPC_STAT, semun); 3938 if (ret == -1) 3939 return get_errno(ret); 3940 3941 nsems = semid_ds.sem_nsems; 3942 3943 array = lock_user(VERIFY_WRITE, target_addr, 3944 nsems*sizeof(unsigned short), 0); 3945 if (!array) 3946 return -TARGET_EFAULT; 3947 3948 for(i=0; i<nsems; i++) { 3949 __put_user((*host_array)[i], &array[i]); 3950 } 3951 g_free(*host_array); 3952 unlock_user(array, target_addr, 1); 3953 3954 return 0; 3955 } 3956 3957 static inline abi_long do_semctl(int semid, int semnum, int cmd, 3958 abi_ulong target_arg) 3959 { 3960 union target_semun target_su = { .buf = target_arg }; 3961 union semun arg; 3962 struct semid_ds dsarg; 3963 unsigned short *array = NULL; 3964 struct seminfo seminfo; 3965 abi_long ret = -TARGET_EINVAL; 3966 abi_long err; 3967 cmd &= 0xff; 3968 3969 switch( cmd ) { 3970 case GETVAL: 3971 case SETVAL: 3972 /* In 64 bit cross-endian situations, we will erroneously pick up 3973 * the wrong half of the union for the "val" element. To rectify 3974 * this, the entire 8-byte structure is byteswapped, followed by 3975 * a swap of the 4 byte val field. In other cases, the data is 3976 * already in proper host byte order. */ 3977 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 3978 target_su.buf = tswapal(target_su.buf); 3979 arg.val = tswap32(target_su.val); 3980 } else { 3981 arg.val = target_su.val; 3982 } 3983 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3984 break; 3985 case GETALL: 3986 case SETALL: 3987 err = target_to_host_semarray(semid, &array, target_su.array); 3988 if (err) 3989 return err; 3990 arg.array = array; 3991 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3992 err = host_to_target_semarray(semid, target_su.array, &array); 3993 if (err) 3994 return err; 3995 break; 3996 case IPC_STAT: 3997 case IPC_SET: 3998 case SEM_STAT: 3999 err = target_to_host_semid_ds(&dsarg, target_su.buf); 4000 if (err) 4001 return err; 4002 arg.buf = &dsarg; 4003 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4004 err = host_to_target_semid_ds(target_su.buf, &dsarg); 4005 if (err) 4006 return err; 4007 break; 4008 case IPC_INFO: 4009 case SEM_INFO: 4010 arg.__buf = &seminfo; 4011 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4012 err = host_to_target_seminfo(target_su.__buf, &seminfo); 4013 if (err) 4014 return err; 4015 break; 4016 case IPC_RMID: 4017 case GETPID: 4018 case GETNCNT: 4019 case GETZCNT: 4020 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 4021 break; 4022 } 4023 4024 return ret; 4025 } 4026 4027 struct target_sembuf { 4028 unsigned short sem_num; 4029 short sem_op; 4030 short sem_flg; 4031 }; 4032 4033 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 4034 abi_ulong target_addr, 4035 unsigned nsops) 4036 { 4037 struct target_sembuf *target_sembuf; 4038 int i; 4039 4040 target_sembuf = lock_user(VERIFY_READ, target_addr, 4041 nsops*sizeof(struct target_sembuf), 1); 4042 if (!target_sembuf) 4043 return -TARGET_EFAULT; 4044 4045 for(i=0; i<nsops; i++) { 4046 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 4047 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 4048 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 4049 } 4050 4051 unlock_user(target_sembuf, target_addr, 0); 4052 4053 return 0; 4054 } 4055 4056 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \ 4057 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64) 4058 4059 /* 4060 * This macro is required to handle the s390 variants, which passes the 4061 * arguments in a different order than default. 4062 */ 4063 #ifdef __s390x__ 4064 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4065 (__nsops), (__timeout), (__sops) 4066 #else 4067 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4068 (__nsops), 0, (__sops), (__timeout) 4069 #endif 4070 4071 static inline abi_long do_semtimedop(int semid, 4072 abi_long ptr, 4073 unsigned nsops, 4074 abi_long timeout, bool time64) 4075 { 4076 struct sembuf *sops; 4077 struct timespec ts, *pts = NULL; 4078 abi_long ret; 4079 4080 if (timeout) { 4081 pts = &ts; 4082 if (time64) { 4083 if (target_to_host_timespec64(pts, timeout)) { 4084 return -TARGET_EFAULT; 4085 } 4086 } else { 4087 if (target_to_host_timespec(pts, timeout)) { 4088 return -TARGET_EFAULT; 4089 } 4090 } 4091 } 4092 4093 if (nsops > TARGET_SEMOPM) { 4094 return -TARGET_E2BIG; 4095 } 4096 4097 sops = g_new(struct sembuf, nsops); 4098 4099 if (target_to_host_sembuf(sops, ptr, nsops)) { 4100 g_free(sops); 4101 return -TARGET_EFAULT; 4102 } 4103 4104 ret = -TARGET_ENOSYS; 4105 #ifdef __NR_semtimedop 4106 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts)); 4107 #endif 4108 #ifdef __NR_ipc 4109 if (ret == -TARGET_ENOSYS) { 4110 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, 4111 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts))); 4112 } 4113 #endif 4114 g_free(sops); 4115 return ret; 4116 } 4117 #endif 4118 4119 struct target_msqid_ds 4120 { 4121 struct target_ipc_perm msg_perm; 4122 abi_ulong msg_stime; 4123 #if TARGET_ABI_BITS == 32 4124 abi_ulong __unused1; 4125 #endif 4126 abi_ulong msg_rtime; 4127 #if TARGET_ABI_BITS == 32 4128 abi_ulong __unused2; 4129 #endif 4130 abi_ulong msg_ctime; 4131 #if TARGET_ABI_BITS == 32 4132 abi_ulong __unused3; 4133 #endif 4134 abi_ulong __msg_cbytes; 4135 abi_ulong msg_qnum; 4136 abi_ulong msg_qbytes; 4137 abi_ulong msg_lspid; 4138 abi_ulong msg_lrpid; 4139 abi_ulong __unused4; 4140 abi_ulong __unused5; 4141 }; 4142 4143 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 4144 abi_ulong target_addr) 4145 { 4146 struct target_msqid_ds *target_md; 4147 4148 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 4149 return -TARGET_EFAULT; 4150 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 4151 return -TARGET_EFAULT; 4152 host_md->msg_stime = tswapal(target_md->msg_stime); 4153 host_md->msg_rtime = tswapal(target_md->msg_rtime); 4154 host_md->msg_ctime = tswapal(target_md->msg_ctime); 4155 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 4156 host_md->msg_qnum = tswapal(target_md->msg_qnum); 4157 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 4158 host_md->msg_lspid = tswapal(target_md->msg_lspid); 4159 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 4160 unlock_user_struct(target_md, target_addr, 0); 4161 return 0; 4162 } 4163 4164 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 4165 struct msqid_ds *host_md) 4166 { 4167 struct target_msqid_ds *target_md; 4168 4169 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 4170 return -TARGET_EFAULT; 4171 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 4172 return -TARGET_EFAULT; 4173 target_md->msg_stime = tswapal(host_md->msg_stime); 4174 target_md->msg_rtime = tswapal(host_md->msg_rtime); 4175 target_md->msg_ctime = tswapal(host_md->msg_ctime); 4176 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 4177 target_md->msg_qnum = tswapal(host_md->msg_qnum); 4178 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 4179 target_md->msg_lspid = tswapal(host_md->msg_lspid); 4180 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 4181 unlock_user_struct(target_md, target_addr, 1); 4182 return 0; 4183 } 4184 4185 struct target_msginfo { 4186 int msgpool; 4187 int msgmap; 4188 int msgmax; 4189 int msgmnb; 4190 int msgmni; 4191 int msgssz; 4192 int msgtql; 4193 unsigned short int msgseg; 4194 }; 4195 4196 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 4197 struct msginfo *host_msginfo) 4198 { 4199 struct target_msginfo *target_msginfo; 4200 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 4201 return -TARGET_EFAULT; 4202 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 4203 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 4204 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 4205 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 4206 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 4207 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 4208 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 4209 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 4210 unlock_user_struct(target_msginfo, target_addr, 1); 4211 return 0; 4212 } 4213 4214 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 4215 { 4216 struct msqid_ds dsarg; 4217 struct msginfo msginfo; 4218 abi_long ret = -TARGET_EINVAL; 4219 4220 cmd &= 0xff; 4221 4222 switch (cmd) { 4223 case IPC_STAT: 4224 case IPC_SET: 4225 case MSG_STAT: 4226 if (target_to_host_msqid_ds(&dsarg,ptr)) 4227 return -TARGET_EFAULT; 4228 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4229 if (host_to_target_msqid_ds(ptr,&dsarg)) 4230 return -TARGET_EFAULT; 4231 break; 4232 case IPC_RMID: 4233 ret = get_errno(msgctl(msgid, cmd, NULL)); 4234 break; 4235 case IPC_INFO: 4236 case MSG_INFO: 4237 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4238 if (host_to_target_msginfo(ptr, &msginfo)) 4239 return -TARGET_EFAULT; 4240 break; 4241 } 4242 4243 return ret; 4244 } 4245 4246 struct target_msgbuf { 4247 abi_long mtype; 4248 char mtext[1]; 4249 }; 4250 4251 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4252 ssize_t msgsz, int msgflg) 4253 { 4254 struct target_msgbuf *target_mb; 4255 struct msgbuf *host_mb; 4256 abi_long ret = 0; 4257 4258 if (msgsz < 0) { 4259 return -TARGET_EINVAL; 4260 } 4261 4262 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4263 return -TARGET_EFAULT; 4264 host_mb = g_try_malloc(msgsz + sizeof(long)); 4265 if (!host_mb) { 4266 unlock_user_struct(target_mb, msgp, 0); 4267 return -TARGET_ENOMEM; 4268 } 4269 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4270 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4271 ret = -TARGET_ENOSYS; 4272 #ifdef __NR_msgsnd 4273 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4274 #endif 4275 #ifdef __NR_ipc 4276 if (ret == -TARGET_ENOSYS) { 4277 #ifdef __s390x__ 4278 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4279 host_mb)); 4280 #else 4281 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4282 host_mb, 0)); 4283 #endif 4284 } 4285 #endif 4286 g_free(host_mb); 4287 unlock_user_struct(target_mb, msgp, 0); 4288 4289 return ret; 4290 } 4291 4292 #ifdef __NR_ipc 4293 #if defined(__sparc__) 4294 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */ 4295 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp 4296 #elif defined(__s390x__) 4297 /* The s390 sys_ipc variant has only five parameters. */ 4298 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4299 ((long int[]){(long int)__msgp, __msgtyp}) 4300 #else 4301 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4302 ((long int[]){(long int)__msgp, __msgtyp}), 0 4303 #endif 4304 #endif 4305 4306 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4307 ssize_t msgsz, abi_long msgtyp, 4308 int msgflg) 4309 { 4310 struct target_msgbuf *target_mb; 4311 char *target_mtext; 4312 struct msgbuf *host_mb; 4313 abi_long ret = 0; 4314 4315 if (msgsz < 0) { 4316 return -TARGET_EINVAL; 4317 } 4318 4319 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4320 return -TARGET_EFAULT; 4321 4322 host_mb = g_try_malloc(msgsz + sizeof(long)); 4323 if (!host_mb) { 4324 ret = -TARGET_ENOMEM; 4325 goto end; 4326 } 4327 ret = -TARGET_ENOSYS; 4328 #ifdef __NR_msgrcv 4329 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4330 #endif 4331 #ifdef __NR_ipc 4332 if (ret == -TARGET_ENOSYS) { 4333 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz, 4334 msgflg, MSGRCV_ARGS(host_mb, msgtyp))); 4335 } 4336 #endif 4337 4338 if (ret > 0) { 4339 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4340 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4341 if (!target_mtext) { 4342 ret = -TARGET_EFAULT; 4343 goto end; 4344 } 4345 memcpy(target_mb->mtext, host_mb->mtext, ret); 4346 unlock_user(target_mtext, target_mtext_addr, ret); 4347 } 4348 4349 target_mb->mtype = tswapal(host_mb->mtype); 4350 4351 end: 4352 if (target_mb) 4353 unlock_user_struct(target_mb, msgp, 1); 4354 g_free(host_mb); 4355 return ret; 4356 } 4357 4358 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4359 abi_ulong target_addr) 4360 { 4361 struct target_shmid_ds *target_sd; 4362 4363 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4364 return -TARGET_EFAULT; 4365 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4366 return -TARGET_EFAULT; 4367 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4368 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4369 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4370 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4371 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4372 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4373 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4374 unlock_user_struct(target_sd, target_addr, 0); 4375 return 0; 4376 } 4377 4378 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4379 struct shmid_ds *host_sd) 4380 { 4381 struct target_shmid_ds *target_sd; 4382 4383 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4384 return -TARGET_EFAULT; 4385 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4386 return -TARGET_EFAULT; 4387 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4388 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4389 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4390 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4391 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4392 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4393 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4394 unlock_user_struct(target_sd, target_addr, 1); 4395 return 0; 4396 } 4397 4398 struct target_shminfo { 4399 abi_ulong shmmax; 4400 abi_ulong shmmin; 4401 abi_ulong shmmni; 4402 abi_ulong shmseg; 4403 abi_ulong shmall; 4404 }; 4405 4406 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4407 struct shminfo *host_shminfo) 4408 { 4409 struct target_shminfo *target_shminfo; 4410 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4411 return -TARGET_EFAULT; 4412 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4413 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4414 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4415 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4416 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4417 unlock_user_struct(target_shminfo, target_addr, 1); 4418 return 0; 4419 } 4420 4421 struct target_shm_info { 4422 int used_ids; 4423 abi_ulong shm_tot; 4424 abi_ulong shm_rss; 4425 abi_ulong shm_swp; 4426 abi_ulong swap_attempts; 4427 abi_ulong swap_successes; 4428 }; 4429 4430 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4431 struct shm_info *host_shm_info) 4432 { 4433 struct target_shm_info *target_shm_info; 4434 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4435 return -TARGET_EFAULT; 4436 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4437 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4438 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4439 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4440 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4441 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4442 unlock_user_struct(target_shm_info, target_addr, 1); 4443 return 0; 4444 } 4445 4446 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4447 { 4448 struct shmid_ds dsarg; 4449 struct shminfo shminfo; 4450 struct shm_info shm_info; 4451 abi_long ret = -TARGET_EINVAL; 4452 4453 cmd &= 0xff; 4454 4455 switch(cmd) { 4456 case IPC_STAT: 4457 case IPC_SET: 4458 case SHM_STAT: 4459 if (target_to_host_shmid_ds(&dsarg, buf)) 4460 return -TARGET_EFAULT; 4461 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4462 if (host_to_target_shmid_ds(buf, &dsarg)) 4463 return -TARGET_EFAULT; 4464 break; 4465 case IPC_INFO: 4466 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4467 if (host_to_target_shminfo(buf, &shminfo)) 4468 return -TARGET_EFAULT; 4469 break; 4470 case SHM_INFO: 4471 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4472 if (host_to_target_shm_info(buf, &shm_info)) 4473 return -TARGET_EFAULT; 4474 break; 4475 case IPC_RMID: 4476 case SHM_LOCK: 4477 case SHM_UNLOCK: 4478 ret = get_errno(shmctl(shmid, cmd, NULL)); 4479 break; 4480 } 4481 4482 return ret; 4483 } 4484 4485 #ifndef TARGET_FORCE_SHMLBA 4486 /* For most architectures, SHMLBA is the same as the page size; 4487 * some architectures have larger values, in which case they should 4488 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4489 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4490 * and defining its own value for SHMLBA. 4491 * 4492 * The kernel also permits SHMLBA to be set by the architecture to a 4493 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4494 * this means that addresses are rounded to the large size if 4495 * SHM_RND is set but addresses not aligned to that size are not rejected 4496 * as long as they are at least page-aligned. Since the only architecture 4497 * which uses this is ia64 this code doesn't provide for that oddity. 4498 */ 4499 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4500 { 4501 return TARGET_PAGE_SIZE; 4502 } 4503 #endif 4504 4505 static abi_ulong do_shmat(CPUArchState *cpu_env, int shmid, 4506 abi_ulong shmaddr, int shmflg) 4507 { 4508 CPUState *cpu = env_cpu(cpu_env); 4509 abi_ulong raddr; 4510 void *host_raddr; 4511 struct shmid_ds shm_info; 4512 int i, ret; 4513 abi_ulong shmlba; 4514 4515 /* shmat pointers are always untagged */ 4516 4517 /* find out the length of the shared memory segment */ 4518 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4519 if (is_error(ret)) { 4520 /* can't get length, bail out */ 4521 return ret; 4522 } 4523 4524 shmlba = target_shmlba(cpu_env); 4525 4526 if (shmaddr & (shmlba - 1)) { 4527 if (shmflg & SHM_RND) { 4528 shmaddr &= ~(shmlba - 1); 4529 } else { 4530 return -TARGET_EINVAL; 4531 } 4532 } 4533 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { 4534 return -TARGET_EINVAL; 4535 } 4536 4537 mmap_lock(); 4538 4539 /* 4540 * We're mapping shared memory, so ensure we generate code for parallel 4541 * execution and flush old translations. This will work up to the level 4542 * supported by the host -- anything that requires EXCP_ATOMIC will not 4543 * be atomic with respect to an external process. 4544 */ 4545 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 4546 cpu->tcg_cflags |= CF_PARALLEL; 4547 tb_flush(cpu); 4548 } 4549 4550 if (shmaddr) 4551 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); 4552 else { 4553 abi_ulong mmap_start; 4554 4555 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4556 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4557 4558 if (mmap_start == -1) { 4559 errno = ENOMEM; 4560 host_raddr = (void *)-1; 4561 } else 4562 host_raddr = shmat(shmid, g2h_untagged(mmap_start), 4563 shmflg | SHM_REMAP); 4564 } 4565 4566 if (host_raddr == (void *)-1) { 4567 mmap_unlock(); 4568 return get_errno((intptr_t)host_raddr); 4569 } 4570 raddr = h2g((uintptr_t)host_raddr); 4571 4572 page_set_flags(raddr, raddr + shm_info.shm_segsz - 1, 4573 PAGE_VALID | PAGE_RESET | PAGE_READ | 4574 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); 4575 4576 for (i = 0; i < N_SHM_REGIONS; i++) { 4577 if (!shm_regions[i].in_use) { 4578 shm_regions[i].in_use = true; 4579 shm_regions[i].start = raddr; 4580 shm_regions[i].size = shm_info.shm_segsz; 4581 break; 4582 } 4583 } 4584 4585 mmap_unlock(); 4586 return raddr; 4587 } 4588 4589 static inline abi_long do_shmdt(abi_ulong shmaddr) 4590 { 4591 int i; 4592 abi_long rv; 4593 4594 /* shmdt pointers are always untagged */ 4595 4596 mmap_lock(); 4597 4598 for (i = 0; i < N_SHM_REGIONS; ++i) { 4599 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4600 shm_regions[i].in_use = false; 4601 page_set_flags(shmaddr, shmaddr + shm_regions[i].size - 1, 0); 4602 break; 4603 } 4604 } 4605 rv = get_errno(shmdt(g2h_untagged(shmaddr))); 4606 4607 mmap_unlock(); 4608 4609 return rv; 4610 } 4611 4612 #ifdef TARGET_NR_ipc 4613 /* ??? This only works with linear mappings. */ 4614 /* do_ipc() must return target values and target errnos. */ 4615 static abi_long do_ipc(CPUArchState *cpu_env, 4616 unsigned int call, abi_long first, 4617 abi_long second, abi_long third, 4618 abi_long ptr, abi_long fifth) 4619 { 4620 int version; 4621 abi_long ret = 0; 4622 4623 version = call >> 16; 4624 call &= 0xffff; 4625 4626 switch (call) { 4627 case IPCOP_semop: 4628 ret = do_semtimedop(first, ptr, second, 0, false); 4629 break; 4630 case IPCOP_semtimedop: 4631 /* 4632 * The s390 sys_ipc variant has only five parameters instead of six 4633 * (as for default variant) and the only difference is the handling of 4634 * SEMTIMEDOP where on s390 the third parameter is used as a pointer 4635 * to a struct timespec where the generic variant uses fifth parameter. 4636 */ 4637 #if defined(TARGET_S390X) 4638 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64); 4639 #else 4640 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64); 4641 #endif 4642 break; 4643 4644 case IPCOP_semget: 4645 ret = get_errno(semget(first, second, third)); 4646 break; 4647 4648 case IPCOP_semctl: { 4649 /* The semun argument to semctl is passed by value, so dereference the 4650 * ptr argument. */ 4651 abi_ulong atptr; 4652 get_user_ual(atptr, ptr); 4653 ret = do_semctl(first, second, third, atptr); 4654 break; 4655 } 4656 4657 case IPCOP_msgget: 4658 ret = get_errno(msgget(first, second)); 4659 break; 4660 4661 case IPCOP_msgsnd: 4662 ret = do_msgsnd(first, ptr, second, third); 4663 break; 4664 4665 case IPCOP_msgctl: 4666 ret = do_msgctl(first, second, ptr); 4667 break; 4668 4669 case IPCOP_msgrcv: 4670 switch (version) { 4671 case 0: 4672 { 4673 struct target_ipc_kludge { 4674 abi_long msgp; 4675 abi_long msgtyp; 4676 } *tmp; 4677 4678 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4679 ret = -TARGET_EFAULT; 4680 break; 4681 } 4682 4683 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4684 4685 unlock_user_struct(tmp, ptr, 0); 4686 break; 4687 } 4688 default: 4689 ret = do_msgrcv(first, ptr, second, fifth, third); 4690 } 4691 break; 4692 4693 case IPCOP_shmat: 4694 switch (version) { 4695 default: 4696 { 4697 abi_ulong raddr; 4698 raddr = do_shmat(cpu_env, first, ptr, second); 4699 if (is_error(raddr)) 4700 return get_errno(raddr); 4701 if (put_user_ual(raddr, third)) 4702 return -TARGET_EFAULT; 4703 break; 4704 } 4705 case 1: 4706 ret = -TARGET_EINVAL; 4707 break; 4708 } 4709 break; 4710 case IPCOP_shmdt: 4711 ret = do_shmdt(ptr); 4712 break; 4713 4714 case IPCOP_shmget: 4715 /* IPC_* flag values are the same on all linux platforms */ 4716 ret = get_errno(shmget(first, second, third)); 4717 break; 4718 4719 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4720 case IPCOP_shmctl: 4721 ret = do_shmctl(first, second, ptr); 4722 break; 4723 default: 4724 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4725 call, version); 4726 ret = -TARGET_ENOSYS; 4727 break; 4728 } 4729 return ret; 4730 } 4731 #endif 4732 4733 /* kernel structure types definitions */ 4734 4735 #define STRUCT(name, ...) STRUCT_ ## name, 4736 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4737 enum { 4738 #include "syscall_types.h" 4739 STRUCT_MAX 4740 }; 4741 #undef STRUCT 4742 #undef STRUCT_SPECIAL 4743 4744 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4745 #define STRUCT_SPECIAL(name) 4746 #include "syscall_types.h" 4747 #undef STRUCT 4748 #undef STRUCT_SPECIAL 4749 4750 #define MAX_STRUCT_SIZE 4096 4751 4752 #ifdef CONFIG_FIEMAP 4753 /* So fiemap access checks don't overflow on 32 bit systems. 4754 * This is very slightly smaller than the limit imposed by 4755 * the underlying kernel. 4756 */ 4757 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4758 / sizeof(struct fiemap_extent)) 4759 4760 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4761 int fd, int cmd, abi_long arg) 4762 { 4763 /* The parameter for this ioctl is a struct fiemap followed 4764 * by an array of struct fiemap_extent whose size is set 4765 * in fiemap->fm_extent_count. The array is filled in by the 4766 * ioctl. 4767 */ 4768 int target_size_in, target_size_out; 4769 struct fiemap *fm; 4770 const argtype *arg_type = ie->arg_type; 4771 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4772 void *argptr, *p; 4773 abi_long ret; 4774 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4775 uint32_t outbufsz; 4776 int free_fm = 0; 4777 4778 assert(arg_type[0] == TYPE_PTR); 4779 assert(ie->access == IOC_RW); 4780 arg_type++; 4781 target_size_in = thunk_type_size(arg_type, 0); 4782 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4783 if (!argptr) { 4784 return -TARGET_EFAULT; 4785 } 4786 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4787 unlock_user(argptr, arg, 0); 4788 fm = (struct fiemap *)buf_temp; 4789 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4790 return -TARGET_EINVAL; 4791 } 4792 4793 outbufsz = sizeof (*fm) + 4794 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4795 4796 if (outbufsz > MAX_STRUCT_SIZE) { 4797 /* We can't fit all the extents into the fixed size buffer. 4798 * Allocate one that is large enough and use it instead. 4799 */ 4800 fm = g_try_malloc(outbufsz); 4801 if (!fm) { 4802 return -TARGET_ENOMEM; 4803 } 4804 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4805 free_fm = 1; 4806 } 4807 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4808 if (!is_error(ret)) { 4809 target_size_out = target_size_in; 4810 /* An extent_count of 0 means we were only counting the extents 4811 * so there are no structs to copy 4812 */ 4813 if (fm->fm_extent_count != 0) { 4814 target_size_out += fm->fm_mapped_extents * extent_size; 4815 } 4816 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4817 if (!argptr) { 4818 ret = -TARGET_EFAULT; 4819 } else { 4820 /* Convert the struct fiemap */ 4821 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4822 if (fm->fm_extent_count != 0) { 4823 p = argptr + target_size_in; 4824 /* ...and then all the struct fiemap_extents */ 4825 for (i = 0; i < fm->fm_mapped_extents; i++) { 4826 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4827 THUNK_TARGET); 4828 p += extent_size; 4829 } 4830 } 4831 unlock_user(argptr, arg, target_size_out); 4832 } 4833 } 4834 if (free_fm) { 4835 g_free(fm); 4836 } 4837 return ret; 4838 } 4839 #endif 4840 4841 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4842 int fd, int cmd, abi_long arg) 4843 { 4844 const argtype *arg_type = ie->arg_type; 4845 int target_size; 4846 void *argptr; 4847 int ret; 4848 struct ifconf *host_ifconf; 4849 uint32_t outbufsz; 4850 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4851 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) }; 4852 int target_ifreq_size; 4853 int nb_ifreq; 4854 int free_buf = 0; 4855 int i; 4856 int target_ifc_len; 4857 abi_long target_ifc_buf; 4858 int host_ifc_len; 4859 char *host_ifc_buf; 4860 4861 assert(arg_type[0] == TYPE_PTR); 4862 assert(ie->access == IOC_RW); 4863 4864 arg_type++; 4865 target_size = thunk_type_size(arg_type, 0); 4866 4867 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4868 if (!argptr) 4869 return -TARGET_EFAULT; 4870 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4871 unlock_user(argptr, arg, 0); 4872 4873 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4874 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4875 target_ifreq_size = thunk_type_size(ifreq_max_type, 0); 4876 4877 if (target_ifc_buf != 0) { 4878 target_ifc_len = host_ifconf->ifc_len; 4879 nb_ifreq = target_ifc_len / target_ifreq_size; 4880 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4881 4882 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4883 if (outbufsz > MAX_STRUCT_SIZE) { 4884 /* 4885 * We can't fit all the extents into the fixed size buffer. 4886 * Allocate one that is large enough and use it instead. 4887 */ 4888 host_ifconf = g_try_malloc(outbufsz); 4889 if (!host_ifconf) { 4890 return -TARGET_ENOMEM; 4891 } 4892 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4893 free_buf = 1; 4894 } 4895 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4896 4897 host_ifconf->ifc_len = host_ifc_len; 4898 } else { 4899 host_ifc_buf = NULL; 4900 } 4901 host_ifconf->ifc_buf = host_ifc_buf; 4902 4903 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 4904 if (!is_error(ret)) { 4905 /* convert host ifc_len to target ifc_len */ 4906 4907 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 4908 target_ifc_len = nb_ifreq * target_ifreq_size; 4909 host_ifconf->ifc_len = target_ifc_len; 4910 4911 /* restore target ifc_buf */ 4912 4913 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 4914 4915 /* copy struct ifconf to target user */ 4916 4917 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 4918 if (!argptr) 4919 return -TARGET_EFAULT; 4920 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 4921 unlock_user(argptr, arg, target_size); 4922 4923 if (target_ifc_buf != 0) { 4924 /* copy ifreq[] to target user */ 4925 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 4926 for (i = 0; i < nb_ifreq ; i++) { 4927 thunk_convert(argptr + i * target_ifreq_size, 4928 host_ifc_buf + i * sizeof(struct ifreq), 4929 ifreq_arg_type, THUNK_TARGET); 4930 } 4931 unlock_user(argptr, target_ifc_buf, target_ifc_len); 4932 } 4933 } 4934 4935 if (free_buf) { 4936 g_free(host_ifconf); 4937 } 4938 4939 return ret; 4940 } 4941 4942 #if defined(CONFIG_USBFS) 4943 #if HOST_LONG_BITS > 64 4944 #error USBDEVFS thunks do not support >64 bit hosts yet. 4945 #endif 4946 struct live_urb { 4947 uint64_t target_urb_adr; 4948 uint64_t target_buf_adr; 4949 char *target_buf_ptr; 4950 struct usbdevfs_urb host_urb; 4951 }; 4952 4953 static GHashTable *usbdevfs_urb_hashtable(void) 4954 { 4955 static GHashTable *urb_hashtable; 4956 4957 if (!urb_hashtable) { 4958 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 4959 } 4960 return urb_hashtable; 4961 } 4962 4963 static void urb_hashtable_insert(struct live_urb *urb) 4964 { 4965 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4966 g_hash_table_insert(urb_hashtable, urb, urb); 4967 } 4968 4969 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 4970 { 4971 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4972 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 4973 } 4974 4975 static void urb_hashtable_remove(struct live_urb *urb) 4976 { 4977 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4978 g_hash_table_remove(urb_hashtable, urb); 4979 } 4980 4981 static abi_long 4982 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 4983 int fd, int cmd, abi_long arg) 4984 { 4985 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 4986 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 4987 struct live_urb *lurb; 4988 void *argptr; 4989 uint64_t hurb; 4990 int target_size; 4991 uintptr_t target_urb_adr; 4992 abi_long ret; 4993 4994 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 4995 4996 memset(buf_temp, 0, sizeof(uint64_t)); 4997 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 4998 if (is_error(ret)) { 4999 return ret; 5000 } 5001 5002 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 5003 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 5004 if (!lurb->target_urb_adr) { 5005 return -TARGET_EFAULT; 5006 } 5007 urb_hashtable_remove(lurb); 5008 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 5009 lurb->host_urb.buffer_length); 5010 lurb->target_buf_ptr = NULL; 5011 5012 /* restore the guest buffer pointer */ 5013 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 5014 5015 /* update the guest urb struct */ 5016 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 5017 if (!argptr) { 5018 g_free(lurb); 5019 return -TARGET_EFAULT; 5020 } 5021 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 5022 unlock_user(argptr, lurb->target_urb_adr, target_size); 5023 5024 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 5025 /* write back the urb handle */ 5026 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5027 if (!argptr) { 5028 g_free(lurb); 5029 return -TARGET_EFAULT; 5030 } 5031 5032 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 5033 target_urb_adr = lurb->target_urb_adr; 5034 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 5035 unlock_user(argptr, arg, target_size); 5036 5037 g_free(lurb); 5038 return ret; 5039 } 5040 5041 static abi_long 5042 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 5043 uint8_t *buf_temp __attribute__((unused)), 5044 int fd, int cmd, abi_long arg) 5045 { 5046 struct live_urb *lurb; 5047 5048 /* map target address back to host URB with metadata. */ 5049 lurb = urb_hashtable_lookup(arg); 5050 if (!lurb) { 5051 return -TARGET_EFAULT; 5052 } 5053 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5054 } 5055 5056 static abi_long 5057 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 5058 int fd, int cmd, abi_long arg) 5059 { 5060 const argtype *arg_type = ie->arg_type; 5061 int target_size; 5062 abi_long ret; 5063 void *argptr; 5064 int rw_dir; 5065 struct live_urb *lurb; 5066 5067 /* 5068 * each submitted URB needs to map to a unique ID for the 5069 * kernel, and that unique ID needs to be a pointer to 5070 * host memory. hence, we need to malloc for each URB. 5071 * isochronous transfers have a variable length struct. 5072 */ 5073 arg_type++; 5074 target_size = thunk_type_size(arg_type, THUNK_TARGET); 5075 5076 /* construct host copy of urb and metadata */ 5077 lurb = g_try_new0(struct live_urb, 1); 5078 if (!lurb) { 5079 return -TARGET_ENOMEM; 5080 } 5081 5082 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5083 if (!argptr) { 5084 g_free(lurb); 5085 return -TARGET_EFAULT; 5086 } 5087 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 5088 unlock_user(argptr, arg, 0); 5089 5090 lurb->target_urb_adr = arg; 5091 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 5092 5093 /* buffer space used depends on endpoint type so lock the entire buffer */ 5094 /* control type urbs should check the buffer contents for true direction */ 5095 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 5096 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 5097 lurb->host_urb.buffer_length, 1); 5098 if (lurb->target_buf_ptr == NULL) { 5099 g_free(lurb); 5100 return -TARGET_EFAULT; 5101 } 5102 5103 /* update buffer pointer in host copy */ 5104 lurb->host_urb.buffer = lurb->target_buf_ptr; 5105 5106 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5107 if (is_error(ret)) { 5108 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 5109 g_free(lurb); 5110 } else { 5111 urb_hashtable_insert(lurb); 5112 } 5113 5114 return ret; 5115 } 5116 #endif /* CONFIG_USBFS */ 5117 5118 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5119 int cmd, abi_long arg) 5120 { 5121 void *argptr; 5122 struct dm_ioctl *host_dm; 5123 abi_long guest_data; 5124 uint32_t guest_data_size; 5125 int target_size; 5126 const argtype *arg_type = ie->arg_type; 5127 abi_long ret; 5128 void *big_buf = NULL; 5129 char *host_data; 5130 5131 arg_type++; 5132 target_size = thunk_type_size(arg_type, 0); 5133 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5134 if (!argptr) { 5135 ret = -TARGET_EFAULT; 5136 goto out; 5137 } 5138 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5139 unlock_user(argptr, arg, 0); 5140 5141 /* buf_temp is too small, so fetch things into a bigger buffer */ 5142 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5143 memcpy(big_buf, buf_temp, target_size); 5144 buf_temp = big_buf; 5145 host_dm = big_buf; 5146 5147 guest_data = arg + host_dm->data_start; 5148 if ((guest_data - arg) < 0) { 5149 ret = -TARGET_EINVAL; 5150 goto out; 5151 } 5152 guest_data_size = host_dm->data_size - host_dm->data_start; 5153 host_data = (char*)host_dm + host_dm->data_start; 5154 5155 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5156 if (!argptr) { 5157 ret = -TARGET_EFAULT; 5158 goto out; 5159 } 5160 5161 switch (ie->host_cmd) { 5162 case DM_REMOVE_ALL: 5163 case DM_LIST_DEVICES: 5164 case DM_DEV_CREATE: 5165 case DM_DEV_REMOVE: 5166 case DM_DEV_SUSPEND: 5167 case DM_DEV_STATUS: 5168 case DM_DEV_WAIT: 5169 case DM_TABLE_STATUS: 5170 case DM_TABLE_CLEAR: 5171 case DM_TABLE_DEPS: 5172 case DM_LIST_VERSIONS: 5173 /* no input data */ 5174 break; 5175 case DM_DEV_RENAME: 5176 case DM_DEV_SET_GEOMETRY: 5177 /* data contains only strings */ 5178 memcpy(host_data, argptr, guest_data_size); 5179 break; 5180 case DM_TARGET_MSG: 5181 memcpy(host_data, argptr, guest_data_size); 5182 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5183 break; 5184 case DM_TABLE_LOAD: 5185 { 5186 void *gspec = argptr; 5187 void *cur_data = host_data; 5188 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5189 int spec_size = thunk_type_size(arg_type, 0); 5190 int i; 5191 5192 for (i = 0; i < host_dm->target_count; i++) { 5193 struct dm_target_spec *spec = cur_data; 5194 uint32_t next; 5195 int slen; 5196 5197 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5198 slen = strlen((char*)gspec + spec_size) + 1; 5199 next = spec->next; 5200 spec->next = sizeof(*spec) + slen; 5201 strcpy((char*)&spec[1], gspec + spec_size); 5202 gspec += next; 5203 cur_data += spec->next; 5204 } 5205 break; 5206 } 5207 default: 5208 ret = -TARGET_EINVAL; 5209 unlock_user(argptr, guest_data, 0); 5210 goto out; 5211 } 5212 unlock_user(argptr, guest_data, 0); 5213 5214 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5215 if (!is_error(ret)) { 5216 guest_data = arg + host_dm->data_start; 5217 guest_data_size = host_dm->data_size - host_dm->data_start; 5218 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5219 switch (ie->host_cmd) { 5220 case DM_REMOVE_ALL: 5221 case DM_DEV_CREATE: 5222 case DM_DEV_REMOVE: 5223 case DM_DEV_RENAME: 5224 case DM_DEV_SUSPEND: 5225 case DM_DEV_STATUS: 5226 case DM_TABLE_LOAD: 5227 case DM_TABLE_CLEAR: 5228 case DM_TARGET_MSG: 5229 case DM_DEV_SET_GEOMETRY: 5230 /* no return data */ 5231 break; 5232 case DM_LIST_DEVICES: 5233 { 5234 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5235 uint32_t remaining_data = guest_data_size; 5236 void *cur_data = argptr; 5237 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5238 int nl_size = 12; /* can't use thunk_size due to alignment */ 5239 5240 while (1) { 5241 uint32_t next = nl->next; 5242 if (next) { 5243 nl->next = nl_size + (strlen(nl->name) + 1); 5244 } 5245 if (remaining_data < nl->next) { 5246 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5247 break; 5248 } 5249 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5250 strcpy(cur_data + nl_size, nl->name); 5251 cur_data += nl->next; 5252 remaining_data -= nl->next; 5253 if (!next) { 5254 break; 5255 } 5256 nl = (void*)nl + next; 5257 } 5258 break; 5259 } 5260 case DM_DEV_WAIT: 5261 case DM_TABLE_STATUS: 5262 { 5263 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5264 void *cur_data = argptr; 5265 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5266 int spec_size = thunk_type_size(arg_type, 0); 5267 int i; 5268 5269 for (i = 0; i < host_dm->target_count; i++) { 5270 uint32_t next = spec->next; 5271 int slen = strlen((char*)&spec[1]) + 1; 5272 spec->next = (cur_data - argptr) + spec_size + slen; 5273 if (guest_data_size < spec->next) { 5274 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5275 break; 5276 } 5277 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5278 strcpy(cur_data + spec_size, (char*)&spec[1]); 5279 cur_data = argptr + spec->next; 5280 spec = (void*)host_dm + host_dm->data_start + next; 5281 } 5282 break; 5283 } 5284 case DM_TABLE_DEPS: 5285 { 5286 void *hdata = (void*)host_dm + host_dm->data_start; 5287 int count = *(uint32_t*)hdata; 5288 uint64_t *hdev = hdata + 8; 5289 uint64_t *gdev = argptr + 8; 5290 int i; 5291 5292 *(uint32_t*)argptr = tswap32(count); 5293 for (i = 0; i < count; i++) { 5294 *gdev = tswap64(*hdev); 5295 gdev++; 5296 hdev++; 5297 } 5298 break; 5299 } 5300 case DM_LIST_VERSIONS: 5301 { 5302 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5303 uint32_t remaining_data = guest_data_size; 5304 void *cur_data = argptr; 5305 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5306 int vers_size = thunk_type_size(arg_type, 0); 5307 5308 while (1) { 5309 uint32_t next = vers->next; 5310 if (next) { 5311 vers->next = vers_size + (strlen(vers->name) + 1); 5312 } 5313 if (remaining_data < vers->next) { 5314 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5315 break; 5316 } 5317 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5318 strcpy(cur_data + vers_size, vers->name); 5319 cur_data += vers->next; 5320 remaining_data -= vers->next; 5321 if (!next) { 5322 break; 5323 } 5324 vers = (void*)vers + next; 5325 } 5326 break; 5327 } 5328 default: 5329 unlock_user(argptr, guest_data, 0); 5330 ret = -TARGET_EINVAL; 5331 goto out; 5332 } 5333 unlock_user(argptr, guest_data, guest_data_size); 5334 5335 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5336 if (!argptr) { 5337 ret = -TARGET_EFAULT; 5338 goto out; 5339 } 5340 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5341 unlock_user(argptr, arg, target_size); 5342 } 5343 out: 5344 g_free(big_buf); 5345 return ret; 5346 } 5347 5348 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5349 int cmd, abi_long arg) 5350 { 5351 void *argptr; 5352 int target_size; 5353 const argtype *arg_type = ie->arg_type; 5354 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5355 abi_long ret; 5356 5357 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5358 struct blkpg_partition host_part; 5359 5360 /* Read and convert blkpg */ 5361 arg_type++; 5362 target_size = thunk_type_size(arg_type, 0); 5363 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5364 if (!argptr) { 5365 ret = -TARGET_EFAULT; 5366 goto out; 5367 } 5368 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5369 unlock_user(argptr, arg, 0); 5370 5371 switch (host_blkpg->op) { 5372 case BLKPG_ADD_PARTITION: 5373 case BLKPG_DEL_PARTITION: 5374 /* payload is struct blkpg_partition */ 5375 break; 5376 default: 5377 /* Unknown opcode */ 5378 ret = -TARGET_EINVAL; 5379 goto out; 5380 } 5381 5382 /* Read and convert blkpg->data */ 5383 arg = (abi_long)(uintptr_t)host_blkpg->data; 5384 target_size = thunk_type_size(part_arg_type, 0); 5385 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5386 if (!argptr) { 5387 ret = -TARGET_EFAULT; 5388 goto out; 5389 } 5390 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5391 unlock_user(argptr, arg, 0); 5392 5393 /* Swizzle the data pointer to our local copy and call! */ 5394 host_blkpg->data = &host_part; 5395 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5396 5397 out: 5398 return ret; 5399 } 5400 5401 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5402 int fd, int cmd, abi_long arg) 5403 { 5404 const argtype *arg_type = ie->arg_type; 5405 const StructEntry *se; 5406 const argtype *field_types; 5407 const int *dst_offsets, *src_offsets; 5408 int target_size; 5409 void *argptr; 5410 abi_ulong *target_rt_dev_ptr = NULL; 5411 unsigned long *host_rt_dev_ptr = NULL; 5412 abi_long ret; 5413 int i; 5414 5415 assert(ie->access == IOC_W); 5416 assert(*arg_type == TYPE_PTR); 5417 arg_type++; 5418 assert(*arg_type == TYPE_STRUCT); 5419 target_size = thunk_type_size(arg_type, 0); 5420 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5421 if (!argptr) { 5422 return -TARGET_EFAULT; 5423 } 5424 arg_type++; 5425 assert(*arg_type == (int)STRUCT_rtentry); 5426 se = struct_entries + *arg_type++; 5427 assert(se->convert[0] == NULL); 5428 /* convert struct here to be able to catch rt_dev string */ 5429 field_types = se->field_types; 5430 dst_offsets = se->field_offsets[THUNK_HOST]; 5431 src_offsets = se->field_offsets[THUNK_TARGET]; 5432 for (i = 0; i < se->nb_fields; i++) { 5433 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5434 assert(*field_types == TYPE_PTRVOID); 5435 target_rt_dev_ptr = argptr + src_offsets[i]; 5436 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5437 if (*target_rt_dev_ptr != 0) { 5438 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5439 tswapal(*target_rt_dev_ptr)); 5440 if (!*host_rt_dev_ptr) { 5441 unlock_user(argptr, arg, 0); 5442 return -TARGET_EFAULT; 5443 } 5444 } else { 5445 *host_rt_dev_ptr = 0; 5446 } 5447 field_types++; 5448 continue; 5449 } 5450 field_types = thunk_convert(buf_temp + dst_offsets[i], 5451 argptr + src_offsets[i], 5452 field_types, THUNK_HOST); 5453 } 5454 unlock_user(argptr, arg, 0); 5455 5456 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5457 5458 assert(host_rt_dev_ptr != NULL); 5459 assert(target_rt_dev_ptr != NULL); 5460 if (*host_rt_dev_ptr != 0) { 5461 unlock_user((void *)*host_rt_dev_ptr, 5462 *target_rt_dev_ptr, 0); 5463 } 5464 return ret; 5465 } 5466 5467 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5468 int fd, int cmd, abi_long arg) 5469 { 5470 int sig = target_to_host_signal(arg); 5471 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5472 } 5473 5474 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5475 int fd, int cmd, abi_long arg) 5476 { 5477 struct timeval tv; 5478 abi_long ret; 5479 5480 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5481 if (is_error(ret)) { 5482 return ret; 5483 } 5484 5485 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5486 if (copy_to_user_timeval(arg, &tv)) { 5487 return -TARGET_EFAULT; 5488 } 5489 } else { 5490 if (copy_to_user_timeval64(arg, &tv)) { 5491 return -TARGET_EFAULT; 5492 } 5493 } 5494 5495 return ret; 5496 } 5497 5498 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5499 int fd, int cmd, abi_long arg) 5500 { 5501 struct timespec ts; 5502 abi_long ret; 5503 5504 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5505 if (is_error(ret)) { 5506 return ret; 5507 } 5508 5509 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5510 if (host_to_target_timespec(arg, &ts)) { 5511 return -TARGET_EFAULT; 5512 } 5513 } else{ 5514 if (host_to_target_timespec64(arg, &ts)) { 5515 return -TARGET_EFAULT; 5516 } 5517 } 5518 5519 return ret; 5520 } 5521 5522 #ifdef TIOCGPTPEER 5523 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5524 int fd, int cmd, abi_long arg) 5525 { 5526 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5527 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5528 } 5529 #endif 5530 5531 #ifdef HAVE_DRM_H 5532 5533 static void unlock_drm_version(struct drm_version *host_ver, 5534 struct target_drm_version *target_ver, 5535 bool copy) 5536 { 5537 unlock_user(host_ver->name, target_ver->name, 5538 copy ? host_ver->name_len : 0); 5539 unlock_user(host_ver->date, target_ver->date, 5540 copy ? host_ver->date_len : 0); 5541 unlock_user(host_ver->desc, target_ver->desc, 5542 copy ? host_ver->desc_len : 0); 5543 } 5544 5545 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, 5546 struct target_drm_version *target_ver) 5547 { 5548 memset(host_ver, 0, sizeof(*host_ver)); 5549 5550 __get_user(host_ver->name_len, &target_ver->name_len); 5551 if (host_ver->name_len) { 5552 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name, 5553 target_ver->name_len, 0); 5554 if (!host_ver->name) { 5555 return -EFAULT; 5556 } 5557 } 5558 5559 __get_user(host_ver->date_len, &target_ver->date_len); 5560 if (host_ver->date_len) { 5561 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date, 5562 target_ver->date_len, 0); 5563 if (!host_ver->date) { 5564 goto err; 5565 } 5566 } 5567 5568 __get_user(host_ver->desc_len, &target_ver->desc_len); 5569 if (host_ver->desc_len) { 5570 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc, 5571 target_ver->desc_len, 0); 5572 if (!host_ver->desc) { 5573 goto err; 5574 } 5575 } 5576 5577 return 0; 5578 err: 5579 unlock_drm_version(host_ver, target_ver, false); 5580 return -EFAULT; 5581 } 5582 5583 static inline void host_to_target_drmversion( 5584 struct target_drm_version *target_ver, 5585 struct drm_version *host_ver) 5586 { 5587 __put_user(host_ver->version_major, &target_ver->version_major); 5588 __put_user(host_ver->version_minor, &target_ver->version_minor); 5589 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel); 5590 __put_user(host_ver->name_len, &target_ver->name_len); 5591 __put_user(host_ver->date_len, &target_ver->date_len); 5592 __put_user(host_ver->desc_len, &target_ver->desc_len); 5593 unlock_drm_version(host_ver, target_ver, true); 5594 } 5595 5596 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, 5597 int fd, int cmd, abi_long arg) 5598 { 5599 struct drm_version *ver; 5600 struct target_drm_version *target_ver; 5601 abi_long ret; 5602 5603 switch (ie->host_cmd) { 5604 case DRM_IOCTL_VERSION: 5605 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) { 5606 return -TARGET_EFAULT; 5607 } 5608 ver = (struct drm_version *)buf_temp; 5609 ret = target_to_host_drmversion(ver, target_ver); 5610 if (!is_error(ret)) { 5611 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); 5612 if (is_error(ret)) { 5613 unlock_drm_version(ver, target_ver, false); 5614 } else { 5615 host_to_target_drmversion(target_ver, ver); 5616 } 5617 } 5618 unlock_user_struct(target_ver, arg, 0); 5619 return ret; 5620 } 5621 return -TARGET_ENOSYS; 5622 } 5623 5624 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie, 5625 struct drm_i915_getparam *gparam, 5626 int fd, abi_long arg) 5627 { 5628 abi_long ret; 5629 int value; 5630 struct target_drm_i915_getparam *target_gparam; 5631 5632 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) { 5633 return -TARGET_EFAULT; 5634 } 5635 5636 __get_user(gparam->param, &target_gparam->param); 5637 gparam->value = &value; 5638 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam)); 5639 put_user_s32(value, target_gparam->value); 5640 5641 unlock_user_struct(target_gparam, arg, 0); 5642 return ret; 5643 } 5644 5645 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp, 5646 int fd, int cmd, abi_long arg) 5647 { 5648 switch (ie->host_cmd) { 5649 case DRM_IOCTL_I915_GETPARAM: 5650 return do_ioctl_drm_i915_getparam(ie, 5651 (struct drm_i915_getparam *)buf_temp, 5652 fd, arg); 5653 default: 5654 return -TARGET_ENOSYS; 5655 } 5656 } 5657 5658 #endif 5659 5660 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp, 5661 int fd, int cmd, abi_long arg) 5662 { 5663 struct tun_filter *filter = (struct tun_filter *)buf_temp; 5664 struct tun_filter *target_filter; 5665 char *target_addr; 5666 5667 assert(ie->access == IOC_W); 5668 5669 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1); 5670 if (!target_filter) { 5671 return -TARGET_EFAULT; 5672 } 5673 filter->flags = tswap16(target_filter->flags); 5674 filter->count = tswap16(target_filter->count); 5675 unlock_user(target_filter, arg, 0); 5676 5677 if (filter->count) { 5678 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN > 5679 MAX_STRUCT_SIZE) { 5680 return -TARGET_EFAULT; 5681 } 5682 5683 target_addr = lock_user(VERIFY_READ, 5684 arg + offsetof(struct tun_filter, addr), 5685 filter->count * ETH_ALEN, 1); 5686 if (!target_addr) { 5687 return -TARGET_EFAULT; 5688 } 5689 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN); 5690 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0); 5691 } 5692 5693 return get_errno(safe_ioctl(fd, ie->host_cmd, filter)); 5694 } 5695 5696 IOCTLEntry ioctl_entries[] = { 5697 #define IOCTL(cmd, access, ...) \ 5698 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5699 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5700 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5701 #define IOCTL_IGNORE(cmd) \ 5702 { TARGET_ ## cmd, 0, #cmd }, 5703 #include "ioctls.h" 5704 { 0, 0, }, 5705 }; 5706 5707 /* ??? Implement proper locking for ioctls. */ 5708 /* do_ioctl() Must return target values and target errnos. */ 5709 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5710 { 5711 const IOCTLEntry *ie; 5712 const argtype *arg_type; 5713 abi_long ret; 5714 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5715 int target_size; 5716 void *argptr; 5717 5718 ie = ioctl_entries; 5719 for(;;) { 5720 if (ie->target_cmd == 0) { 5721 qemu_log_mask( 5722 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5723 return -TARGET_ENOTTY; 5724 } 5725 if (ie->target_cmd == cmd) 5726 break; 5727 ie++; 5728 } 5729 arg_type = ie->arg_type; 5730 if (ie->do_ioctl) { 5731 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5732 } else if (!ie->host_cmd) { 5733 /* Some architectures define BSD ioctls in their headers 5734 that are not implemented in Linux. */ 5735 return -TARGET_ENOTTY; 5736 } 5737 5738 switch(arg_type[0]) { 5739 case TYPE_NULL: 5740 /* no argument */ 5741 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5742 break; 5743 case TYPE_PTRVOID: 5744 case TYPE_INT: 5745 case TYPE_LONG: 5746 case TYPE_ULONG: 5747 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5748 break; 5749 case TYPE_PTR: 5750 arg_type++; 5751 target_size = thunk_type_size(arg_type, 0); 5752 switch(ie->access) { 5753 case IOC_R: 5754 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5755 if (!is_error(ret)) { 5756 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5757 if (!argptr) 5758 return -TARGET_EFAULT; 5759 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5760 unlock_user(argptr, arg, target_size); 5761 } 5762 break; 5763 case IOC_W: 5764 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5765 if (!argptr) 5766 return -TARGET_EFAULT; 5767 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5768 unlock_user(argptr, arg, 0); 5769 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5770 break; 5771 default: 5772 case IOC_RW: 5773 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5774 if (!argptr) 5775 return -TARGET_EFAULT; 5776 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5777 unlock_user(argptr, arg, 0); 5778 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5779 if (!is_error(ret)) { 5780 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5781 if (!argptr) 5782 return -TARGET_EFAULT; 5783 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5784 unlock_user(argptr, arg, target_size); 5785 } 5786 break; 5787 } 5788 break; 5789 default: 5790 qemu_log_mask(LOG_UNIMP, 5791 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5792 (long)cmd, arg_type[0]); 5793 ret = -TARGET_ENOTTY; 5794 break; 5795 } 5796 return ret; 5797 } 5798 5799 static const bitmask_transtbl iflag_tbl[] = { 5800 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5801 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5802 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5803 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5804 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5805 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5806 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5807 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5808 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5809 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5810 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5811 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5812 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5813 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5814 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8}, 5815 }; 5816 5817 static const bitmask_transtbl oflag_tbl[] = { 5818 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5819 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5820 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5821 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5822 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5823 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5824 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5825 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5826 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5827 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5828 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5829 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5830 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5831 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5832 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5833 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5834 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5835 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5836 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5837 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5838 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5839 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5840 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5841 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5842 }; 5843 5844 static const bitmask_transtbl cflag_tbl[] = { 5845 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5846 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5847 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5848 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5849 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5850 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5851 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5852 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5853 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5854 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5855 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5856 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5857 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5858 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5859 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5860 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5861 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5862 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5863 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5864 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5865 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5866 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5867 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5868 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5869 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5870 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5871 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5872 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5873 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5874 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5875 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5876 }; 5877 5878 static const bitmask_transtbl lflag_tbl[] = { 5879 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5880 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5881 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5882 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5883 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5884 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5885 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5886 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5887 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5888 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5889 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5890 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5891 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5892 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5893 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5894 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC}, 5895 }; 5896 5897 static void target_to_host_termios (void *dst, const void *src) 5898 { 5899 struct host_termios *host = dst; 5900 const struct target_termios *target = src; 5901 5902 host->c_iflag = 5903 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5904 host->c_oflag = 5905 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5906 host->c_cflag = 5907 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5908 host->c_lflag = 5909 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 5910 host->c_line = target->c_line; 5911 5912 memset(host->c_cc, 0, sizeof(host->c_cc)); 5913 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 5914 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 5915 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 5916 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 5917 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 5918 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 5919 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 5920 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 5921 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 5922 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 5923 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 5924 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 5925 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 5926 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 5927 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 5928 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 5929 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 5930 } 5931 5932 static void host_to_target_termios (void *dst, const void *src) 5933 { 5934 struct target_termios *target = dst; 5935 const struct host_termios *host = src; 5936 5937 target->c_iflag = 5938 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 5939 target->c_oflag = 5940 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 5941 target->c_cflag = 5942 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 5943 target->c_lflag = 5944 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 5945 target->c_line = host->c_line; 5946 5947 memset(target->c_cc, 0, sizeof(target->c_cc)); 5948 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 5949 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 5950 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 5951 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 5952 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 5953 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 5954 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 5955 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 5956 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 5957 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 5958 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 5959 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 5960 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 5961 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 5962 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 5963 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 5964 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 5965 } 5966 5967 static const StructEntry struct_termios_def = { 5968 .convert = { host_to_target_termios, target_to_host_termios }, 5969 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 5970 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 5971 .print = print_termios, 5972 }; 5973 5974 /* If the host does not provide these bits, they may be safely discarded. */ 5975 #ifndef MAP_SYNC 5976 #define MAP_SYNC 0 5977 #endif 5978 #ifndef MAP_UNINITIALIZED 5979 #define MAP_UNINITIALIZED 0 5980 #endif 5981 5982 static const bitmask_transtbl mmap_flags_tbl[] = { 5983 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 5984 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 5985 MAP_ANONYMOUS, MAP_ANONYMOUS }, 5986 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 5987 MAP_GROWSDOWN, MAP_GROWSDOWN }, 5988 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 5989 MAP_DENYWRITE, MAP_DENYWRITE }, 5990 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 5991 MAP_EXECUTABLE, MAP_EXECUTABLE }, 5992 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 5993 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 5994 MAP_NORESERVE, MAP_NORESERVE }, 5995 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 5996 /* MAP_STACK had been ignored by the kernel for quite some time. 5997 Recognize it for the target insofar as we do not want to pass 5998 it through to the host. */ 5999 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 6000 { TARGET_MAP_NONBLOCK, TARGET_MAP_NONBLOCK, MAP_NONBLOCK, MAP_NONBLOCK }, 6001 { TARGET_MAP_POPULATE, TARGET_MAP_POPULATE, MAP_POPULATE, MAP_POPULATE }, 6002 { TARGET_MAP_FIXED_NOREPLACE, TARGET_MAP_FIXED_NOREPLACE, 6003 MAP_FIXED_NOREPLACE, MAP_FIXED_NOREPLACE }, 6004 { TARGET_MAP_UNINITIALIZED, TARGET_MAP_UNINITIALIZED, 6005 MAP_UNINITIALIZED, MAP_UNINITIALIZED }, 6006 }; 6007 6008 /* 6009 * Arrange for legacy / undefined architecture specific flags to be 6010 * ignored by mmap handling code. 6011 */ 6012 #ifndef TARGET_MAP_32BIT 6013 #define TARGET_MAP_32BIT 0 6014 #endif 6015 #ifndef TARGET_MAP_HUGE_2MB 6016 #define TARGET_MAP_HUGE_2MB 0 6017 #endif 6018 #ifndef TARGET_MAP_HUGE_1GB 6019 #define TARGET_MAP_HUGE_1GB 0 6020 #endif 6021 6022 static abi_long do_mmap(abi_ulong addr, abi_ulong len, int prot, 6023 int target_flags, int fd, off_t offset) 6024 { 6025 /* 6026 * The historical set of flags that all mmap types implicitly support. 6027 */ 6028 enum { 6029 TARGET_LEGACY_MAP_MASK = TARGET_MAP_SHARED 6030 | TARGET_MAP_PRIVATE 6031 | TARGET_MAP_FIXED 6032 | TARGET_MAP_ANONYMOUS 6033 | TARGET_MAP_DENYWRITE 6034 | TARGET_MAP_EXECUTABLE 6035 | TARGET_MAP_UNINITIALIZED 6036 | TARGET_MAP_GROWSDOWN 6037 | TARGET_MAP_LOCKED 6038 | TARGET_MAP_NORESERVE 6039 | TARGET_MAP_POPULATE 6040 | TARGET_MAP_NONBLOCK 6041 | TARGET_MAP_STACK 6042 | TARGET_MAP_HUGETLB 6043 | TARGET_MAP_32BIT 6044 | TARGET_MAP_HUGE_2MB 6045 | TARGET_MAP_HUGE_1GB 6046 }; 6047 int host_flags; 6048 6049 switch (target_flags & TARGET_MAP_TYPE) { 6050 case TARGET_MAP_PRIVATE: 6051 host_flags = MAP_PRIVATE; 6052 break; 6053 case TARGET_MAP_SHARED: 6054 host_flags = MAP_SHARED; 6055 break; 6056 case TARGET_MAP_SHARED_VALIDATE: 6057 /* 6058 * MAP_SYNC is only supported for MAP_SHARED_VALIDATE, and is 6059 * therefore omitted from mmap_flags_tbl and TARGET_LEGACY_MAP_MASK. 6060 */ 6061 if (target_flags & ~(TARGET_LEGACY_MAP_MASK | TARGET_MAP_SYNC)) { 6062 return -TARGET_EOPNOTSUPP; 6063 } 6064 host_flags = MAP_SHARED_VALIDATE; 6065 if (target_flags & TARGET_MAP_SYNC) { 6066 host_flags |= MAP_SYNC; 6067 } 6068 break; 6069 default: 6070 return -TARGET_EINVAL; 6071 } 6072 host_flags |= target_to_host_bitmask(target_flags, mmap_flags_tbl); 6073 6074 return get_errno(target_mmap(addr, len, prot, host_flags, fd, offset)); 6075 } 6076 6077 /* 6078 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 6079 * TARGET_I386 is defined if TARGET_X86_64 is defined 6080 */ 6081 #if defined(TARGET_I386) 6082 6083 /* NOTE: there is really one LDT for all the threads */ 6084 static uint8_t *ldt_table; 6085 6086 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 6087 { 6088 int size; 6089 void *p; 6090 6091 if (!ldt_table) 6092 return 0; 6093 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 6094 if (size > bytecount) 6095 size = bytecount; 6096 p = lock_user(VERIFY_WRITE, ptr, size, 0); 6097 if (!p) 6098 return -TARGET_EFAULT; 6099 /* ??? Should this by byteswapped? */ 6100 memcpy(p, ldt_table, size); 6101 unlock_user(p, ptr, size); 6102 return size; 6103 } 6104 6105 /* XXX: add locking support */ 6106 static abi_long write_ldt(CPUX86State *env, 6107 abi_ulong ptr, unsigned long bytecount, int oldmode) 6108 { 6109 struct target_modify_ldt_ldt_s ldt_info; 6110 struct target_modify_ldt_ldt_s *target_ldt_info; 6111 int seg_32bit, contents, read_exec_only, limit_in_pages; 6112 int seg_not_present, useable, lm; 6113 uint32_t *lp, entry_1, entry_2; 6114 6115 if (bytecount != sizeof(ldt_info)) 6116 return -TARGET_EINVAL; 6117 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 6118 return -TARGET_EFAULT; 6119 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6120 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6121 ldt_info.limit = tswap32(target_ldt_info->limit); 6122 ldt_info.flags = tswap32(target_ldt_info->flags); 6123 unlock_user_struct(target_ldt_info, ptr, 0); 6124 6125 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 6126 return -TARGET_EINVAL; 6127 seg_32bit = ldt_info.flags & 1; 6128 contents = (ldt_info.flags >> 1) & 3; 6129 read_exec_only = (ldt_info.flags >> 3) & 1; 6130 limit_in_pages = (ldt_info.flags >> 4) & 1; 6131 seg_not_present = (ldt_info.flags >> 5) & 1; 6132 useable = (ldt_info.flags >> 6) & 1; 6133 #ifdef TARGET_ABI32 6134 lm = 0; 6135 #else 6136 lm = (ldt_info.flags >> 7) & 1; 6137 #endif 6138 if (contents == 3) { 6139 if (oldmode) 6140 return -TARGET_EINVAL; 6141 if (seg_not_present == 0) 6142 return -TARGET_EINVAL; 6143 } 6144 /* allocate the LDT */ 6145 if (!ldt_table) { 6146 env->ldt.base = target_mmap(0, 6147 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 6148 PROT_READ|PROT_WRITE, 6149 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 6150 if (env->ldt.base == -1) 6151 return -TARGET_ENOMEM; 6152 memset(g2h_untagged(env->ldt.base), 0, 6153 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 6154 env->ldt.limit = 0xffff; 6155 ldt_table = g2h_untagged(env->ldt.base); 6156 } 6157 6158 /* NOTE: same code as Linux kernel */ 6159 /* Allow LDTs to be cleared by the user. */ 6160 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6161 if (oldmode || 6162 (contents == 0 && 6163 read_exec_only == 1 && 6164 seg_32bit == 0 && 6165 limit_in_pages == 0 && 6166 seg_not_present == 1 && 6167 useable == 0 )) { 6168 entry_1 = 0; 6169 entry_2 = 0; 6170 goto install; 6171 } 6172 } 6173 6174 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6175 (ldt_info.limit & 0x0ffff); 6176 entry_2 = (ldt_info.base_addr & 0xff000000) | 6177 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6178 (ldt_info.limit & 0xf0000) | 6179 ((read_exec_only ^ 1) << 9) | 6180 (contents << 10) | 6181 ((seg_not_present ^ 1) << 15) | 6182 (seg_32bit << 22) | 6183 (limit_in_pages << 23) | 6184 (lm << 21) | 6185 0x7000; 6186 if (!oldmode) 6187 entry_2 |= (useable << 20); 6188 6189 /* Install the new entry ... */ 6190 install: 6191 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 6192 lp[0] = tswap32(entry_1); 6193 lp[1] = tswap32(entry_2); 6194 return 0; 6195 } 6196 6197 /* specific and weird i386 syscalls */ 6198 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6199 unsigned long bytecount) 6200 { 6201 abi_long ret; 6202 6203 switch (func) { 6204 case 0: 6205 ret = read_ldt(ptr, bytecount); 6206 break; 6207 case 1: 6208 ret = write_ldt(env, ptr, bytecount, 1); 6209 break; 6210 case 0x11: 6211 ret = write_ldt(env, ptr, bytecount, 0); 6212 break; 6213 default: 6214 ret = -TARGET_ENOSYS; 6215 break; 6216 } 6217 return ret; 6218 } 6219 6220 #if defined(TARGET_ABI32) 6221 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6222 { 6223 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6224 struct target_modify_ldt_ldt_s ldt_info; 6225 struct target_modify_ldt_ldt_s *target_ldt_info; 6226 int seg_32bit, contents, read_exec_only, limit_in_pages; 6227 int seg_not_present, useable, lm; 6228 uint32_t *lp, entry_1, entry_2; 6229 int i; 6230 6231 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6232 if (!target_ldt_info) 6233 return -TARGET_EFAULT; 6234 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6235 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6236 ldt_info.limit = tswap32(target_ldt_info->limit); 6237 ldt_info.flags = tswap32(target_ldt_info->flags); 6238 if (ldt_info.entry_number == -1) { 6239 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6240 if (gdt_table[i] == 0) { 6241 ldt_info.entry_number = i; 6242 target_ldt_info->entry_number = tswap32(i); 6243 break; 6244 } 6245 } 6246 } 6247 unlock_user_struct(target_ldt_info, ptr, 1); 6248 6249 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6250 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6251 return -TARGET_EINVAL; 6252 seg_32bit = ldt_info.flags & 1; 6253 contents = (ldt_info.flags >> 1) & 3; 6254 read_exec_only = (ldt_info.flags >> 3) & 1; 6255 limit_in_pages = (ldt_info.flags >> 4) & 1; 6256 seg_not_present = (ldt_info.flags >> 5) & 1; 6257 useable = (ldt_info.flags >> 6) & 1; 6258 #ifdef TARGET_ABI32 6259 lm = 0; 6260 #else 6261 lm = (ldt_info.flags >> 7) & 1; 6262 #endif 6263 6264 if (contents == 3) { 6265 if (seg_not_present == 0) 6266 return -TARGET_EINVAL; 6267 } 6268 6269 /* NOTE: same code as Linux kernel */ 6270 /* Allow LDTs to be cleared by the user. */ 6271 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6272 if ((contents == 0 && 6273 read_exec_only == 1 && 6274 seg_32bit == 0 && 6275 limit_in_pages == 0 && 6276 seg_not_present == 1 && 6277 useable == 0 )) { 6278 entry_1 = 0; 6279 entry_2 = 0; 6280 goto install; 6281 } 6282 } 6283 6284 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6285 (ldt_info.limit & 0x0ffff); 6286 entry_2 = (ldt_info.base_addr & 0xff000000) | 6287 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6288 (ldt_info.limit & 0xf0000) | 6289 ((read_exec_only ^ 1) << 9) | 6290 (contents << 10) | 6291 ((seg_not_present ^ 1) << 15) | 6292 (seg_32bit << 22) | 6293 (limit_in_pages << 23) | 6294 (useable << 20) | 6295 (lm << 21) | 6296 0x7000; 6297 6298 /* Install the new entry ... */ 6299 install: 6300 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6301 lp[0] = tswap32(entry_1); 6302 lp[1] = tswap32(entry_2); 6303 return 0; 6304 } 6305 6306 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6307 { 6308 struct target_modify_ldt_ldt_s *target_ldt_info; 6309 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6310 uint32_t base_addr, limit, flags; 6311 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6312 int seg_not_present, useable, lm; 6313 uint32_t *lp, entry_1, entry_2; 6314 6315 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6316 if (!target_ldt_info) 6317 return -TARGET_EFAULT; 6318 idx = tswap32(target_ldt_info->entry_number); 6319 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6320 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6321 unlock_user_struct(target_ldt_info, ptr, 1); 6322 return -TARGET_EINVAL; 6323 } 6324 lp = (uint32_t *)(gdt_table + idx); 6325 entry_1 = tswap32(lp[0]); 6326 entry_2 = tswap32(lp[1]); 6327 6328 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6329 contents = (entry_2 >> 10) & 3; 6330 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6331 seg_32bit = (entry_2 >> 22) & 1; 6332 limit_in_pages = (entry_2 >> 23) & 1; 6333 useable = (entry_2 >> 20) & 1; 6334 #ifdef TARGET_ABI32 6335 lm = 0; 6336 #else 6337 lm = (entry_2 >> 21) & 1; 6338 #endif 6339 flags = (seg_32bit << 0) | (contents << 1) | 6340 (read_exec_only << 3) | (limit_in_pages << 4) | 6341 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6342 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6343 base_addr = (entry_1 >> 16) | 6344 (entry_2 & 0xff000000) | 6345 ((entry_2 & 0xff) << 16); 6346 target_ldt_info->base_addr = tswapal(base_addr); 6347 target_ldt_info->limit = tswap32(limit); 6348 target_ldt_info->flags = tswap32(flags); 6349 unlock_user_struct(target_ldt_info, ptr, 1); 6350 return 0; 6351 } 6352 6353 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6354 { 6355 return -TARGET_ENOSYS; 6356 } 6357 #else 6358 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6359 { 6360 abi_long ret = 0; 6361 abi_ulong val; 6362 int idx; 6363 6364 switch(code) { 6365 case TARGET_ARCH_SET_GS: 6366 case TARGET_ARCH_SET_FS: 6367 if (code == TARGET_ARCH_SET_GS) 6368 idx = R_GS; 6369 else 6370 idx = R_FS; 6371 cpu_x86_load_seg(env, idx, 0); 6372 env->segs[idx].base = addr; 6373 break; 6374 case TARGET_ARCH_GET_GS: 6375 case TARGET_ARCH_GET_FS: 6376 if (code == TARGET_ARCH_GET_GS) 6377 idx = R_GS; 6378 else 6379 idx = R_FS; 6380 val = env->segs[idx].base; 6381 if (put_user(val, addr, abi_ulong)) 6382 ret = -TARGET_EFAULT; 6383 break; 6384 default: 6385 ret = -TARGET_EINVAL; 6386 break; 6387 } 6388 return ret; 6389 } 6390 #endif /* defined(TARGET_ABI32 */ 6391 #endif /* defined(TARGET_I386) */ 6392 6393 /* 6394 * These constants are generic. Supply any that are missing from the host. 6395 */ 6396 #ifndef PR_SET_NAME 6397 # define PR_SET_NAME 15 6398 # define PR_GET_NAME 16 6399 #endif 6400 #ifndef PR_SET_FP_MODE 6401 # define PR_SET_FP_MODE 45 6402 # define PR_GET_FP_MODE 46 6403 # define PR_FP_MODE_FR (1 << 0) 6404 # define PR_FP_MODE_FRE (1 << 1) 6405 #endif 6406 #ifndef PR_SVE_SET_VL 6407 # define PR_SVE_SET_VL 50 6408 # define PR_SVE_GET_VL 51 6409 # define PR_SVE_VL_LEN_MASK 0xffff 6410 # define PR_SVE_VL_INHERIT (1 << 17) 6411 #endif 6412 #ifndef PR_PAC_RESET_KEYS 6413 # define PR_PAC_RESET_KEYS 54 6414 # define PR_PAC_APIAKEY (1 << 0) 6415 # define PR_PAC_APIBKEY (1 << 1) 6416 # define PR_PAC_APDAKEY (1 << 2) 6417 # define PR_PAC_APDBKEY (1 << 3) 6418 # define PR_PAC_APGAKEY (1 << 4) 6419 #endif 6420 #ifndef PR_SET_TAGGED_ADDR_CTRL 6421 # define PR_SET_TAGGED_ADDR_CTRL 55 6422 # define PR_GET_TAGGED_ADDR_CTRL 56 6423 # define PR_TAGGED_ADDR_ENABLE (1UL << 0) 6424 #endif 6425 #ifndef PR_MTE_TCF_SHIFT 6426 # define PR_MTE_TCF_SHIFT 1 6427 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 6428 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 6429 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 6430 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT) 6431 # define PR_MTE_TAG_SHIFT 3 6432 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT) 6433 #endif 6434 #ifndef PR_SET_IO_FLUSHER 6435 # define PR_SET_IO_FLUSHER 57 6436 # define PR_GET_IO_FLUSHER 58 6437 #endif 6438 #ifndef PR_SET_SYSCALL_USER_DISPATCH 6439 # define PR_SET_SYSCALL_USER_DISPATCH 59 6440 #endif 6441 #ifndef PR_SME_SET_VL 6442 # define PR_SME_SET_VL 63 6443 # define PR_SME_GET_VL 64 6444 # define PR_SME_VL_LEN_MASK 0xffff 6445 # define PR_SME_VL_INHERIT (1 << 17) 6446 #endif 6447 6448 #include "target_prctl.h" 6449 6450 static abi_long do_prctl_inval0(CPUArchState *env) 6451 { 6452 return -TARGET_EINVAL; 6453 } 6454 6455 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2) 6456 { 6457 return -TARGET_EINVAL; 6458 } 6459 6460 #ifndef do_prctl_get_fp_mode 6461 #define do_prctl_get_fp_mode do_prctl_inval0 6462 #endif 6463 #ifndef do_prctl_set_fp_mode 6464 #define do_prctl_set_fp_mode do_prctl_inval1 6465 #endif 6466 #ifndef do_prctl_sve_get_vl 6467 #define do_prctl_sve_get_vl do_prctl_inval0 6468 #endif 6469 #ifndef do_prctl_sve_set_vl 6470 #define do_prctl_sve_set_vl do_prctl_inval1 6471 #endif 6472 #ifndef do_prctl_reset_keys 6473 #define do_prctl_reset_keys do_prctl_inval1 6474 #endif 6475 #ifndef do_prctl_set_tagged_addr_ctrl 6476 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1 6477 #endif 6478 #ifndef do_prctl_get_tagged_addr_ctrl 6479 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0 6480 #endif 6481 #ifndef do_prctl_get_unalign 6482 #define do_prctl_get_unalign do_prctl_inval1 6483 #endif 6484 #ifndef do_prctl_set_unalign 6485 #define do_prctl_set_unalign do_prctl_inval1 6486 #endif 6487 #ifndef do_prctl_sme_get_vl 6488 #define do_prctl_sme_get_vl do_prctl_inval0 6489 #endif 6490 #ifndef do_prctl_sme_set_vl 6491 #define do_prctl_sme_set_vl do_prctl_inval1 6492 #endif 6493 6494 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2, 6495 abi_long arg3, abi_long arg4, abi_long arg5) 6496 { 6497 abi_long ret; 6498 6499 switch (option) { 6500 case PR_GET_PDEATHSIG: 6501 { 6502 int deathsig; 6503 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig, 6504 arg3, arg4, arg5)); 6505 if (!is_error(ret) && 6506 put_user_s32(host_to_target_signal(deathsig), arg2)) { 6507 return -TARGET_EFAULT; 6508 } 6509 return ret; 6510 } 6511 case PR_SET_PDEATHSIG: 6512 return get_errno(prctl(PR_SET_PDEATHSIG, target_to_host_signal(arg2), 6513 arg3, arg4, arg5)); 6514 case PR_GET_NAME: 6515 { 6516 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 6517 if (!name) { 6518 return -TARGET_EFAULT; 6519 } 6520 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name, 6521 arg3, arg4, arg5)); 6522 unlock_user(name, arg2, 16); 6523 return ret; 6524 } 6525 case PR_SET_NAME: 6526 { 6527 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 6528 if (!name) { 6529 return -TARGET_EFAULT; 6530 } 6531 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name, 6532 arg3, arg4, arg5)); 6533 unlock_user(name, arg2, 0); 6534 return ret; 6535 } 6536 case PR_GET_FP_MODE: 6537 return do_prctl_get_fp_mode(env); 6538 case PR_SET_FP_MODE: 6539 return do_prctl_set_fp_mode(env, arg2); 6540 case PR_SVE_GET_VL: 6541 return do_prctl_sve_get_vl(env); 6542 case PR_SVE_SET_VL: 6543 return do_prctl_sve_set_vl(env, arg2); 6544 case PR_SME_GET_VL: 6545 return do_prctl_sme_get_vl(env); 6546 case PR_SME_SET_VL: 6547 return do_prctl_sme_set_vl(env, arg2); 6548 case PR_PAC_RESET_KEYS: 6549 if (arg3 || arg4 || arg5) { 6550 return -TARGET_EINVAL; 6551 } 6552 return do_prctl_reset_keys(env, arg2); 6553 case PR_SET_TAGGED_ADDR_CTRL: 6554 if (arg3 || arg4 || arg5) { 6555 return -TARGET_EINVAL; 6556 } 6557 return do_prctl_set_tagged_addr_ctrl(env, arg2); 6558 case PR_GET_TAGGED_ADDR_CTRL: 6559 if (arg2 || arg3 || arg4 || arg5) { 6560 return -TARGET_EINVAL; 6561 } 6562 return do_prctl_get_tagged_addr_ctrl(env); 6563 6564 case PR_GET_UNALIGN: 6565 return do_prctl_get_unalign(env, arg2); 6566 case PR_SET_UNALIGN: 6567 return do_prctl_set_unalign(env, arg2); 6568 6569 case PR_CAP_AMBIENT: 6570 case PR_CAPBSET_READ: 6571 case PR_CAPBSET_DROP: 6572 case PR_GET_DUMPABLE: 6573 case PR_SET_DUMPABLE: 6574 case PR_GET_KEEPCAPS: 6575 case PR_SET_KEEPCAPS: 6576 case PR_GET_SECUREBITS: 6577 case PR_SET_SECUREBITS: 6578 case PR_GET_TIMING: 6579 case PR_SET_TIMING: 6580 case PR_GET_TIMERSLACK: 6581 case PR_SET_TIMERSLACK: 6582 case PR_MCE_KILL: 6583 case PR_MCE_KILL_GET: 6584 case PR_GET_NO_NEW_PRIVS: 6585 case PR_SET_NO_NEW_PRIVS: 6586 case PR_GET_IO_FLUSHER: 6587 case PR_SET_IO_FLUSHER: 6588 /* Some prctl options have no pointer arguments and we can pass on. */ 6589 return get_errno(prctl(option, arg2, arg3, arg4, arg5)); 6590 6591 case PR_GET_CHILD_SUBREAPER: 6592 case PR_SET_CHILD_SUBREAPER: 6593 case PR_GET_SPECULATION_CTRL: 6594 case PR_SET_SPECULATION_CTRL: 6595 case PR_GET_TID_ADDRESS: 6596 /* TODO */ 6597 return -TARGET_EINVAL; 6598 6599 case PR_GET_FPEXC: 6600 case PR_SET_FPEXC: 6601 /* Was used for SPE on PowerPC. */ 6602 return -TARGET_EINVAL; 6603 6604 case PR_GET_ENDIAN: 6605 case PR_SET_ENDIAN: 6606 case PR_GET_FPEMU: 6607 case PR_SET_FPEMU: 6608 case PR_SET_MM: 6609 case PR_GET_SECCOMP: 6610 case PR_SET_SECCOMP: 6611 case PR_SET_SYSCALL_USER_DISPATCH: 6612 case PR_GET_THP_DISABLE: 6613 case PR_SET_THP_DISABLE: 6614 case PR_GET_TSC: 6615 case PR_SET_TSC: 6616 /* Disable to prevent the target disabling stuff we need. */ 6617 return -TARGET_EINVAL; 6618 6619 default: 6620 qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n", 6621 option); 6622 return -TARGET_EINVAL; 6623 } 6624 } 6625 6626 #define NEW_STACK_SIZE 0x40000 6627 6628 6629 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6630 typedef struct { 6631 CPUArchState *env; 6632 pthread_mutex_t mutex; 6633 pthread_cond_t cond; 6634 pthread_t thread; 6635 uint32_t tid; 6636 abi_ulong child_tidptr; 6637 abi_ulong parent_tidptr; 6638 sigset_t sigmask; 6639 } new_thread_info; 6640 6641 static void *clone_func(void *arg) 6642 { 6643 new_thread_info *info = arg; 6644 CPUArchState *env; 6645 CPUState *cpu; 6646 TaskState *ts; 6647 6648 rcu_register_thread(); 6649 tcg_register_thread(); 6650 env = info->env; 6651 cpu = env_cpu(env); 6652 thread_cpu = cpu; 6653 ts = (TaskState *)cpu->opaque; 6654 info->tid = sys_gettid(); 6655 task_settid(ts); 6656 if (info->child_tidptr) 6657 put_user_u32(info->tid, info->child_tidptr); 6658 if (info->parent_tidptr) 6659 put_user_u32(info->tid, info->parent_tidptr); 6660 qemu_guest_random_seed_thread_part2(cpu->random_seed); 6661 /* Enable signals. */ 6662 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6663 /* Signal to the parent that we're ready. */ 6664 pthread_mutex_lock(&info->mutex); 6665 pthread_cond_broadcast(&info->cond); 6666 pthread_mutex_unlock(&info->mutex); 6667 /* Wait until the parent has finished initializing the tls state. */ 6668 pthread_mutex_lock(&clone_lock); 6669 pthread_mutex_unlock(&clone_lock); 6670 cpu_loop(env); 6671 /* never exits */ 6672 return NULL; 6673 } 6674 6675 /* do_fork() Must return host values and target errnos (unlike most 6676 do_*() functions). */ 6677 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6678 abi_ulong parent_tidptr, target_ulong newtls, 6679 abi_ulong child_tidptr) 6680 { 6681 CPUState *cpu = env_cpu(env); 6682 int ret; 6683 TaskState *ts; 6684 CPUState *new_cpu; 6685 CPUArchState *new_env; 6686 sigset_t sigmask; 6687 6688 flags &= ~CLONE_IGNORED_FLAGS; 6689 6690 /* Emulate vfork() with fork() */ 6691 if (flags & CLONE_VFORK) 6692 flags &= ~(CLONE_VFORK | CLONE_VM); 6693 6694 if (flags & CLONE_VM) { 6695 TaskState *parent_ts = (TaskState *)cpu->opaque; 6696 new_thread_info info; 6697 pthread_attr_t attr; 6698 6699 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6700 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6701 return -TARGET_EINVAL; 6702 } 6703 6704 ts = g_new0(TaskState, 1); 6705 init_task_state(ts); 6706 6707 /* Grab a mutex so that thread setup appears atomic. */ 6708 pthread_mutex_lock(&clone_lock); 6709 6710 /* 6711 * If this is our first additional thread, we need to ensure we 6712 * generate code for parallel execution and flush old translations. 6713 * Do this now so that the copy gets CF_PARALLEL too. 6714 */ 6715 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 6716 cpu->tcg_cflags |= CF_PARALLEL; 6717 tb_flush(cpu); 6718 } 6719 6720 /* we create a new CPU instance. */ 6721 new_env = cpu_copy(env); 6722 /* Init regs that differ from the parent. */ 6723 cpu_clone_regs_child(new_env, newsp, flags); 6724 cpu_clone_regs_parent(env, flags); 6725 new_cpu = env_cpu(new_env); 6726 new_cpu->opaque = ts; 6727 ts->bprm = parent_ts->bprm; 6728 ts->info = parent_ts->info; 6729 ts->signal_mask = parent_ts->signal_mask; 6730 6731 if (flags & CLONE_CHILD_CLEARTID) { 6732 ts->child_tidptr = child_tidptr; 6733 } 6734 6735 if (flags & CLONE_SETTLS) { 6736 cpu_set_tls (new_env, newtls); 6737 } 6738 6739 memset(&info, 0, sizeof(info)); 6740 pthread_mutex_init(&info.mutex, NULL); 6741 pthread_mutex_lock(&info.mutex); 6742 pthread_cond_init(&info.cond, NULL); 6743 info.env = new_env; 6744 if (flags & CLONE_CHILD_SETTID) { 6745 info.child_tidptr = child_tidptr; 6746 } 6747 if (flags & CLONE_PARENT_SETTID) { 6748 info.parent_tidptr = parent_tidptr; 6749 } 6750 6751 ret = pthread_attr_init(&attr); 6752 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6753 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6754 /* It is not safe to deliver signals until the child has finished 6755 initializing, so temporarily block all signals. */ 6756 sigfillset(&sigmask); 6757 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6758 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6759 6760 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6761 /* TODO: Free new CPU state if thread creation failed. */ 6762 6763 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6764 pthread_attr_destroy(&attr); 6765 if (ret == 0) { 6766 /* Wait for the child to initialize. */ 6767 pthread_cond_wait(&info.cond, &info.mutex); 6768 ret = info.tid; 6769 } else { 6770 ret = -1; 6771 } 6772 pthread_mutex_unlock(&info.mutex); 6773 pthread_cond_destroy(&info.cond); 6774 pthread_mutex_destroy(&info.mutex); 6775 pthread_mutex_unlock(&clone_lock); 6776 } else { 6777 /* if no CLONE_VM, we consider it is a fork */ 6778 if (flags & CLONE_INVALID_FORK_FLAGS) { 6779 return -TARGET_EINVAL; 6780 } 6781 6782 /* We can't support custom termination signals */ 6783 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6784 return -TARGET_EINVAL; 6785 } 6786 6787 #if !defined(__NR_pidfd_open) || !defined(TARGET_NR_pidfd_open) 6788 if (flags & CLONE_PIDFD) { 6789 return -TARGET_EINVAL; 6790 } 6791 #endif 6792 6793 /* Can not allow CLONE_PIDFD with CLONE_PARENT_SETTID */ 6794 if ((flags & CLONE_PIDFD) && (flags & CLONE_PARENT_SETTID)) { 6795 return -TARGET_EINVAL; 6796 } 6797 6798 if (block_signals()) { 6799 return -QEMU_ERESTARTSYS; 6800 } 6801 6802 fork_start(); 6803 ret = fork(); 6804 if (ret == 0) { 6805 /* Child Process. */ 6806 cpu_clone_regs_child(env, newsp, flags); 6807 fork_end(1); 6808 /* There is a race condition here. The parent process could 6809 theoretically read the TID in the child process before the child 6810 tid is set. This would require using either ptrace 6811 (not implemented) or having *_tidptr to point at a shared memory 6812 mapping. We can't repeat the spinlock hack used above because 6813 the child process gets its own copy of the lock. */ 6814 if (flags & CLONE_CHILD_SETTID) 6815 put_user_u32(sys_gettid(), child_tidptr); 6816 if (flags & CLONE_PARENT_SETTID) 6817 put_user_u32(sys_gettid(), parent_tidptr); 6818 ts = (TaskState *)cpu->opaque; 6819 if (flags & CLONE_SETTLS) 6820 cpu_set_tls (env, newtls); 6821 if (flags & CLONE_CHILD_CLEARTID) 6822 ts->child_tidptr = child_tidptr; 6823 } else { 6824 cpu_clone_regs_parent(env, flags); 6825 if (flags & CLONE_PIDFD) { 6826 int pid_fd = 0; 6827 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 6828 int pid_child = ret; 6829 pid_fd = pidfd_open(pid_child, 0); 6830 if (pid_fd >= 0) { 6831 fcntl(pid_fd, F_SETFD, fcntl(pid_fd, F_GETFL) 6832 | FD_CLOEXEC); 6833 } else { 6834 pid_fd = 0; 6835 } 6836 #endif 6837 put_user_u32(pid_fd, parent_tidptr); 6838 } 6839 fork_end(0); 6840 } 6841 g_assert(!cpu_in_exclusive_context(cpu)); 6842 } 6843 return ret; 6844 } 6845 6846 /* warning : doesn't handle linux specific flags... */ 6847 static int target_to_host_fcntl_cmd(int cmd) 6848 { 6849 int ret; 6850 6851 switch(cmd) { 6852 case TARGET_F_DUPFD: 6853 case TARGET_F_GETFD: 6854 case TARGET_F_SETFD: 6855 case TARGET_F_GETFL: 6856 case TARGET_F_SETFL: 6857 case TARGET_F_OFD_GETLK: 6858 case TARGET_F_OFD_SETLK: 6859 case TARGET_F_OFD_SETLKW: 6860 ret = cmd; 6861 break; 6862 case TARGET_F_GETLK: 6863 ret = F_GETLK64; 6864 break; 6865 case TARGET_F_SETLK: 6866 ret = F_SETLK64; 6867 break; 6868 case TARGET_F_SETLKW: 6869 ret = F_SETLKW64; 6870 break; 6871 case TARGET_F_GETOWN: 6872 ret = F_GETOWN; 6873 break; 6874 case TARGET_F_SETOWN: 6875 ret = F_SETOWN; 6876 break; 6877 case TARGET_F_GETSIG: 6878 ret = F_GETSIG; 6879 break; 6880 case TARGET_F_SETSIG: 6881 ret = F_SETSIG; 6882 break; 6883 #if TARGET_ABI_BITS == 32 6884 case TARGET_F_GETLK64: 6885 ret = F_GETLK64; 6886 break; 6887 case TARGET_F_SETLK64: 6888 ret = F_SETLK64; 6889 break; 6890 case TARGET_F_SETLKW64: 6891 ret = F_SETLKW64; 6892 break; 6893 #endif 6894 case TARGET_F_SETLEASE: 6895 ret = F_SETLEASE; 6896 break; 6897 case TARGET_F_GETLEASE: 6898 ret = F_GETLEASE; 6899 break; 6900 #ifdef F_DUPFD_CLOEXEC 6901 case TARGET_F_DUPFD_CLOEXEC: 6902 ret = F_DUPFD_CLOEXEC; 6903 break; 6904 #endif 6905 case TARGET_F_NOTIFY: 6906 ret = F_NOTIFY; 6907 break; 6908 #ifdef F_GETOWN_EX 6909 case TARGET_F_GETOWN_EX: 6910 ret = F_GETOWN_EX; 6911 break; 6912 #endif 6913 #ifdef F_SETOWN_EX 6914 case TARGET_F_SETOWN_EX: 6915 ret = F_SETOWN_EX; 6916 break; 6917 #endif 6918 #ifdef F_SETPIPE_SZ 6919 case TARGET_F_SETPIPE_SZ: 6920 ret = F_SETPIPE_SZ; 6921 break; 6922 case TARGET_F_GETPIPE_SZ: 6923 ret = F_GETPIPE_SZ; 6924 break; 6925 #endif 6926 #ifdef F_ADD_SEALS 6927 case TARGET_F_ADD_SEALS: 6928 ret = F_ADD_SEALS; 6929 break; 6930 case TARGET_F_GET_SEALS: 6931 ret = F_GET_SEALS; 6932 break; 6933 #endif 6934 default: 6935 ret = -TARGET_EINVAL; 6936 break; 6937 } 6938 6939 #if defined(__powerpc64__) 6940 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6941 * is not supported by kernel. The glibc fcntl call actually adjusts 6942 * them to 5, 6 and 7 before making the syscall(). Since we make the 6943 * syscall directly, adjust to what is supported by the kernel. 6944 */ 6945 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6946 ret -= F_GETLK64 - 5; 6947 } 6948 #endif 6949 6950 return ret; 6951 } 6952 6953 #define FLOCK_TRANSTBL \ 6954 switch (type) { \ 6955 TRANSTBL_CONVERT(F_RDLCK); \ 6956 TRANSTBL_CONVERT(F_WRLCK); \ 6957 TRANSTBL_CONVERT(F_UNLCK); \ 6958 } 6959 6960 static int target_to_host_flock(int type) 6961 { 6962 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6963 FLOCK_TRANSTBL 6964 #undef TRANSTBL_CONVERT 6965 return -TARGET_EINVAL; 6966 } 6967 6968 static int host_to_target_flock(int type) 6969 { 6970 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6971 FLOCK_TRANSTBL 6972 #undef TRANSTBL_CONVERT 6973 /* if we don't know how to convert the value coming 6974 * from the host we copy to the target field as-is 6975 */ 6976 return type; 6977 } 6978 6979 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6980 abi_ulong target_flock_addr) 6981 { 6982 struct target_flock *target_fl; 6983 int l_type; 6984 6985 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6986 return -TARGET_EFAULT; 6987 } 6988 6989 __get_user(l_type, &target_fl->l_type); 6990 l_type = target_to_host_flock(l_type); 6991 if (l_type < 0) { 6992 return l_type; 6993 } 6994 fl->l_type = l_type; 6995 __get_user(fl->l_whence, &target_fl->l_whence); 6996 __get_user(fl->l_start, &target_fl->l_start); 6997 __get_user(fl->l_len, &target_fl->l_len); 6998 __get_user(fl->l_pid, &target_fl->l_pid); 6999 unlock_user_struct(target_fl, target_flock_addr, 0); 7000 return 0; 7001 } 7002 7003 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 7004 const struct flock64 *fl) 7005 { 7006 struct target_flock *target_fl; 7007 short l_type; 7008 7009 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 7010 return -TARGET_EFAULT; 7011 } 7012 7013 l_type = host_to_target_flock(fl->l_type); 7014 __put_user(l_type, &target_fl->l_type); 7015 __put_user(fl->l_whence, &target_fl->l_whence); 7016 __put_user(fl->l_start, &target_fl->l_start); 7017 __put_user(fl->l_len, &target_fl->l_len); 7018 __put_user(fl->l_pid, &target_fl->l_pid); 7019 unlock_user_struct(target_fl, target_flock_addr, 1); 7020 return 0; 7021 } 7022 7023 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 7024 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 7025 7026 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 7027 struct target_oabi_flock64 { 7028 abi_short l_type; 7029 abi_short l_whence; 7030 abi_llong l_start; 7031 abi_llong l_len; 7032 abi_int l_pid; 7033 } QEMU_PACKED; 7034 7035 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 7036 abi_ulong target_flock_addr) 7037 { 7038 struct target_oabi_flock64 *target_fl; 7039 int l_type; 7040 7041 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 7042 return -TARGET_EFAULT; 7043 } 7044 7045 __get_user(l_type, &target_fl->l_type); 7046 l_type = target_to_host_flock(l_type); 7047 if (l_type < 0) { 7048 return l_type; 7049 } 7050 fl->l_type = l_type; 7051 __get_user(fl->l_whence, &target_fl->l_whence); 7052 __get_user(fl->l_start, &target_fl->l_start); 7053 __get_user(fl->l_len, &target_fl->l_len); 7054 __get_user(fl->l_pid, &target_fl->l_pid); 7055 unlock_user_struct(target_fl, target_flock_addr, 0); 7056 return 0; 7057 } 7058 7059 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 7060 const struct flock64 *fl) 7061 { 7062 struct target_oabi_flock64 *target_fl; 7063 short l_type; 7064 7065 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 7066 return -TARGET_EFAULT; 7067 } 7068 7069 l_type = host_to_target_flock(fl->l_type); 7070 __put_user(l_type, &target_fl->l_type); 7071 __put_user(fl->l_whence, &target_fl->l_whence); 7072 __put_user(fl->l_start, &target_fl->l_start); 7073 __put_user(fl->l_len, &target_fl->l_len); 7074 __put_user(fl->l_pid, &target_fl->l_pid); 7075 unlock_user_struct(target_fl, target_flock_addr, 1); 7076 return 0; 7077 } 7078 #endif 7079 7080 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 7081 abi_ulong target_flock_addr) 7082 { 7083 struct target_flock64 *target_fl; 7084 int l_type; 7085 7086 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 7087 return -TARGET_EFAULT; 7088 } 7089 7090 __get_user(l_type, &target_fl->l_type); 7091 l_type = target_to_host_flock(l_type); 7092 if (l_type < 0) { 7093 return l_type; 7094 } 7095 fl->l_type = l_type; 7096 __get_user(fl->l_whence, &target_fl->l_whence); 7097 __get_user(fl->l_start, &target_fl->l_start); 7098 __get_user(fl->l_len, &target_fl->l_len); 7099 __get_user(fl->l_pid, &target_fl->l_pid); 7100 unlock_user_struct(target_fl, target_flock_addr, 0); 7101 return 0; 7102 } 7103 7104 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 7105 const struct flock64 *fl) 7106 { 7107 struct target_flock64 *target_fl; 7108 short l_type; 7109 7110 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 7111 return -TARGET_EFAULT; 7112 } 7113 7114 l_type = host_to_target_flock(fl->l_type); 7115 __put_user(l_type, &target_fl->l_type); 7116 __put_user(fl->l_whence, &target_fl->l_whence); 7117 __put_user(fl->l_start, &target_fl->l_start); 7118 __put_user(fl->l_len, &target_fl->l_len); 7119 __put_user(fl->l_pid, &target_fl->l_pid); 7120 unlock_user_struct(target_fl, target_flock_addr, 1); 7121 return 0; 7122 } 7123 7124 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 7125 { 7126 struct flock64 fl64; 7127 #ifdef F_GETOWN_EX 7128 struct f_owner_ex fox; 7129 struct target_f_owner_ex *target_fox; 7130 #endif 7131 abi_long ret; 7132 int host_cmd = target_to_host_fcntl_cmd(cmd); 7133 7134 if (host_cmd == -TARGET_EINVAL) 7135 return host_cmd; 7136 7137 switch(cmd) { 7138 case TARGET_F_GETLK: 7139 ret = copy_from_user_flock(&fl64, arg); 7140 if (ret) { 7141 return ret; 7142 } 7143 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7144 if (ret == 0) { 7145 ret = copy_to_user_flock(arg, &fl64); 7146 } 7147 break; 7148 7149 case TARGET_F_SETLK: 7150 case TARGET_F_SETLKW: 7151 ret = copy_from_user_flock(&fl64, arg); 7152 if (ret) { 7153 return ret; 7154 } 7155 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7156 break; 7157 7158 case TARGET_F_GETLK64: 7159 case TARGET_F_OFD_GETLK: 7160 ret = copy_from_user_flock64(&fl64, arg); 7161 if (ret) { 7162 return ret; 7163 } 7164 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7165 if (ret == 0) { 7166 ret = copy_to_user_flock64(arg, &fl64); 7167 } 7168 break; 7169 case TARGET_F_SETLK64: 7170 case TARGET_F_SETLKW64: 7171 case TARGET_F_OFD_SETLK: 7172 case TARGET_F_OFD_SETLKW: 7173 ret = copy_from_user_flock64(&fl64, arg); 7174 if (ret) { 7175 return ret; 7176 } 7177 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7178 break; 7179 7180 case TARGET_F_GETFL: 7181 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7182 if (ret >= 0) { 7183 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 7184 /* tell 32-bit guests it uses largefile on 64-bit hosts: */ 7185 if (O_LARGEFILE == 0 && HOST_LONG_BITS == 64) { 7186 ret |= TARGET_O_LARGEFILE; 7187 } 7188 } 7189 break; 7190 7191 case TARGET_F_SETFL: 7192 ret = get_errno(safe_fcntl(fd, host_cmd, 7193 target_to_host_bitmask(arg, 7194 fcntl_flags_tbl))); 7195 break; 7196 7197 #ifdef F_GETOWN_EX 7198 case TARGET_F_GETOWN_EX: 7199 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7200 if (ret >= 0) { 7201 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 7202 return -TARGET_EFAULT; 7203 target_fox->type = tswap32(fox.type); 7204 target_fox->pid = tswap32(fox.pid); 7205 unlock_user_struct(target_fox, arg, 1); 7206 } 7207 break; 7208 #endif 7209 7210 #ifdef F_SETOWN_EX 7211 case TARGET_F_SETOWN_EX: 7212 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 7213 return -TARGET_EFAULT; 7214 fox.type = tswap32(target_fox->type); 7215 fox.pid = tswap32(target_fox->pid); 7216 unlock_user_struct(target_fox, arg, 0); 7217 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7218 break; 7219 #endif 7220 7221 case TARGET_F_SETSIG: 7222 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg))); 7223 break; 7224 7225 case TARGET_F_GETSIG: 7226 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg))); 7227 break; 7228 7229 case TARGET_F_SETOWN: 7230 case TARGET_F_GETOWN: 7231 case TARGET_F_SETLEASE: 7232 case TARGET_F_GETLEASE: 7233 case TARGET_F_SETPIPE_SZ: 7234 case TARGET_F_GETPIPE_SZ: 7235 case TARGET_F_ADD_SEALS: 7236 case TARGET_F_GET_SEALS: 7237 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7238 break; 7239 7240 default: 7241 ret = get_errno(safe_fcntl(fd, cmd, arg)); 7242 break; 7243 } 7244 return ret; 7245 } 7246 7247 #ifdef USE_UID16 7248 7249 static inline int high2lowuid(int uid) 7250 { 7251 if (uid > 65535) 7252 return 65534; 7253 else 7254 return uid; 7255 } 7256 7257 static inline int high2lowgid(int gid) 7258 { 7259 if (gid > 65535) 7260 return 65534; 7261 else 7262 return gid; 7263 } 7264 7265 static inline int low2highuid(int uid) 7266 { 7267 if ((int16_t)uid == -1) 7268 return -1; 7269 else 7270 return uid; 7271 } 7272 7273 static inline int low2highgid(int gid) 7274 { 7275 if ((int16_t)gid == -1) 7276 return -1; 7277 else 7278 return gid; 7279 } 7280 static inline int tswapid(int id) 7281 { 7282 return tswap16(id); 7283 } 7284 7285 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 7286 7287 #else /* !USE_UID16 */ 7288 static inline int high2lowuid(int uid) 7289 { 7290 return uid; 7291 } 7292 static inline int high2lowgid(int gid) 7293 { 7294 return gid; 7295 } 7296 static inline int low2highuid(int uid) 7297 { 7298 return uid; 7299 } 7300 static inline int low2highgid(int gid) 7301 { 7302 return gid; 7303 } 7304 static inline int tswapid(int id) 7305 { 7306 return tswap32(id); 7307 } 7308 7309 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 7310 7311 #endif /* USE_UID16 */ 7312 7313 /* We must do direct syscalls for setting UID/GID, because we want to 7314 * implement the Linux system call semantics of "change only for this thread", 7315 * not the libc/POSIX semantics of "change for all threads in process". 7316 * (See http://ewontfix.com/17/ for more details.) 7317 * We use the 32-bit version of the syscalls if present; if it is not 7318 * then either the host architecture supports 32-bit UIDs natively with 7319 * the standard syscall, or the 16-bit UID is the best we can do. 7320 */ 7321 #ifdef __NR_setuid32 7322 #define __NR_sys_setuid __NR_setuid32 7323 #else 7324 #define __NR_sys_setuid __NR_setuid 7325 #endif 7326 #ifdef __NR_setgid32 7327 #define __NR_sys_setgid __NR_setgid32 7328 #else 7329 #define __NR_sys_setgid __NR_setgid 7330 #endif 7331 #ifdef __NR_setresuid32 7332 #define __NR_sys_setresuid __NR_setresuid32 7333 #else 7334 #define __NR_sys_setresuid __NR_setresuid 7335 #endif 7336 #ifdef __NR_setresgid32 7337 #define __NR_sys_setresgid __NR_setresgid32 7338 #else 7339 #define __NR_sys_setresgid __NR_setresgid 7340 #endif 7341 7342 _syscall1(int, sys_setuid, uid_t, uid) 7343 _syscall1(int, sys_setgid, gid_t, gid) 7344 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 7345 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 7346 7347 void syscall_init(void) 7348 { 7349 IOCTLEntry *ie; 7350 const argtype *arg_type; 7351 int size; 7352 7353 thunk_init(STRUCT_MAX); 7354 7355 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 7356 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 7357 #include "syscall_types.h" 7358 #undef STRUCT 7359 #undef STRUCT_SPECIAL 7360 7361 /* we patch the ioctl size if necessary. We rely on the fact that 7362 no ioctl has all the bits at '1' in the size field */ 7363 ie = ioctl_entries; 7364 while (ie->target_cmd != 0) { 7365 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 7366 TARGET_IOC_SIZEMASK) { 7367 arg_type = ie->arg_type; 7368 if (arg_type[0] != TYPE_PTR) { 7369 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 7370 ie->target_cmd); 7371 exit(1); 7372 } 7373 arg_type++; 7374 size = thunk_type_size(arg_type, 0); 7375 ie->target_cmd = (ie->target_cmd & 7376 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 7377 (size << TARGET_IOC_SIZESHIFT); 7378 } 7379 7380 /* automatic consistency check if same arch */ 7381 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 7382 (defined(__x86_64__) && defined(TARGET_X86_64)) 7383 if (unlikely(ie->target_cmd != ie->host_cmd)) { 7384 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 7385 ie->name, ie->target_cmd, ie->host_cmd); 7386 } 7387 #endif 7388 ie++; 7389 } 7390 } 7391 7392 #ifdef TARGET_NR_truncate64 7393 static inline abi_long target_truncate64(CPUArchState *cpu_env, const char *arg1, 7394 abi_long arg2, 7395 abi_long arg3, 7396 abi_long arg4) 7397 { 7398 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 7399 arg2 = arg3; 7400 arg3 = arg4; 7401 } 7402 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 7403 } 7404 #endif 7405 7406 #ifdef TARGET_NR_ftruncate64 7407 static inline abi_long target_ftruncate64(CPUArchState *cpu_env, abi_long arg1, 7408 abi_long arg2, 7409 abi_long arg3, 7410 abi_long arg4) 7411 { 7412 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 7413 arg2 = arg3; 7414 arg3 = arg4; 7415 } 7416 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 7417 } 7418 #endif 7419 7420 #if defined(TARGET_NR_timer_settime) || \ 7421 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 7422 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its, 7423 abi_ulong target_addr) 7424 { 7425 if (target_to_host_timespec(&host_its->it_interval, target_addr + 7426 offsetof(struct target_itimerspec, 7427 it_interval)) || 7428 target_to_host_timespec(&host_its->it_value, target_addr + 7429 offsetof(struct target_itimerspec, 7430 it_value))) { 7431 return -TARGET_EFAULT; 7432 } 7433 7434 return 0; 7435 } 7436 #endif 7437 7438 #if defined(TARGET_NR_timer_settime64) || \ 7439 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) 7440 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its, 7441 abi_ulong target_addr) 7442 { 7443 if (target_to_host_timespec64(&host_its->it_interval, target_addr + 7444 offsetof(struct target__kernel_itimerspec, 7445 it_interval)) || 7446 target_to_host_timespec64(&host_its->it_value, target_addr + 7447 offsetof(struct target__kernel_itimerspec, 7448 it_value))) { 7449 return -TARGET_EFAULT; 7450 } 7451 7452 return 0; 7453 } 7454 #endif 7455 7456 #if ((defined(TARGET_NR_timerfd_gettime) || \ 7457 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 7458 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 7459 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 7460 struct itimerspec *host_its) 7461 { 7462 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7463 it_interval), 7464 &host_its->it_interval) || 7465 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7466 it_value), 7467 &host_its->it_value)) { 7468 return -TARGET_EFAULT; 7469 } 7470 return 0; 7471 } 7472 #endif 7473 7474 #if ((defined(TARGET_NR_timerfd_gettime64) || \ 7475 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \ 7476 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64) 7477 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr, 7478 struct itimerspec *host_its) 7479 { 7480 if (host_to_target_timespec64(target_addr + 7481 offsetof(struct target__kernel_itimerspec, 7482 it_interval), 7483 &host_its->it_interval) || 7484 host_to_target_timespec64(target_addr + 7485 offsetof(struct target__kernel_itimerspec, 7486 it_value), 7487 &host_its->it_value)) { 7488 return -TARGET_EFAULT; 7489 } 7490 return 0; 7491 } 7492 #endif 7493 7494 #if defined(TARGET_NR_adjtimex) || \ 7495 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 7496 static inline abi_long target_to_host_timex(struct timex *host_tx, 7497 abi_long target_addr) 7498 { 7499 struct target_timex *target_tx; 7500 7501 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7502 return -TARGET_EFAULT; 7503 } 7504 7505 __get_user(host_tx->modes, &target_tx->modes); 7506 __get_user(host_tx->offset, &target_tx->offset); 7507 __get_user(host_tx->freq, &target_tx->freq); 7508 __get_user(host_tx->maxerror, &target_tx->maxerror); 7509 __get_user(host_tx->esterror, &target_tx->esterror); 7510 __get_user(host_tx->status, &target_tx->status); 7511 __get_user(host_tx->constant, &target_tx->constant); 7512 __get_user(host_tx->precision, &target_tx->precision); 7513 __get_user(host_tx->tolerance, &target_tx->tolerance); 7514 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7515 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7516 __get_user(host_tx->tick, &target_tx->tick); 7517 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7518 __get_user(host_tx->jitter, &target_tx->jitter); 7519 __get_user(host_tx->shift, &target_tx->shift); 7520 __get_user(host_tx->stabil, &target_tx->stabil); 7521 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7522 __get_user(host_tx->calcnt, &target_tx->calcnt); 7523 __get_user(host_tx->errcnt, &target_tx->errcnt); 7524 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7525 __get_user(host_tx->tai, &target_tx->tai); 7526 7527 unlock_user_struct(target_tx, target_addr, 0); 7528 return 0; 7529 } 7530 7531 static inline abi_long host_to_target_timex(abi_long target_addr, 7532 struct timex *host_tx) 7533 { 7534 struct target_timex *target_tx; 7535 7536 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7537 return -TARGET_EFAULT; 7538 } 7539 7540 __put_user(host_tx->modes, &target_tx->modes); 7541 __put_user(host_tx->offset, &target_tx->offset); 7542 __put_user(host_tx->freq, &target_tx->freq); 7543 __put_user(host_tx->maxerror, &target_tx->maxerror); 7544 __put_user(host_tx->esterror, &target_tx->esterror); 7545 __put_user(host_tx->status, &target_tx->status); 7546 __put_user(host_tx->constant, &target_tx->constant); 7547 __put_user(host_tx->precision, &target_tx->precision); 7548 __put_user(host_tx->tolerance, &target_tx->tolerance); 7549 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7550 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7551 __put_user(host_tx->tick, &target_tx->tick); 7552 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7553 __put_user(host_tx->jitter, &target_tx->jitter); 7554 __put_user(host_tx->shift, &target_tx->shift); 7555 __put_user(host_tx->stabil, &target_tx->stabil); 7556 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7557 __put_user(host_tx->calcnt, &target_tx->calcnt); 7558 __put_user(host_tx->errcnt, &target_tx->errcnt); 7559 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7560 __put_user(host_tx->tai, &target_tx->tai); 7561 7562 unlock_user_struct(target_tx, target_addr, 1); 7563 return 0; 7564 } 7565 #endif 7566 7567 7568 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 7569 static inline abi_long target_to_host_timex64(struct timex *host_tx, 7570 abi_long target_addr) 7571 { 7572 struct target__kernel_timex *target_tx; 7573 7574 if (copy_from_user_timeval64(&host_tx->time, target_addr + 7575 offsetof(struct target__kernel_timex, 7576 time))) { 7577 return -TARGET_EFAULT; 7578 } 7579 7580 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7581 return -TARGET_EFAULT; 7582 } 7583 7584 __get_user(host_tx->modes, &target_tx->modes); 7585 __get_user(host_tx->offset, &target_tx->offset); 7586 __get_user(host_tx->freq, &target_tx->freq); 7587 __get_user(host_tx->maxerror, &target_tx->maxerror); 7588 __get_user(host_tx->esterror, &target_tx->esterror); 7589 __get_user(host_tx->status, &target_tx->status); 7590 __get_user(host_tx->constant, &target_tx->constant); 7591 __get_user(host_tx->precision, &target_tx->precision); 7592 __get_user(host_tx->tolerance, &target_tx->tolerance); 7593 __get_user(host_tx->tick, &target_tx->tick); 7594 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7595 __get_user(host_tx->jitter, &target_tx->jitter); 7596 __get_user(host_tx->shift, &target_tx->shift); 7597 __get_user(host_tx->stabil, &target_tx->stabil); 7598 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7599 __get_user(host_tx->calcnt, &target_tx->calcnt); 7600 __get_user(host_tx->errcnt, &target_tx->errcnt); 7601 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7602 __get_user(host_tx->tai, &target_tx->tai); 7603 7604 unlock_user_struct(target_tx, target_addr, 0); 7605 return 0; 7606 } 7607 7608 static inline abi_long host_to_target_timex64(abi_long target_addr, 7609 struct timex *host_tx) 7610 { 7611 struct target__kernel_timex *target_tx; 7612 7613 if (copy_to_user_timeval64(target_addr + 7614 offsetof(struct target__kernel_timex, time), 7615 &host_tx->time)) { 7616 return -TARGET_EFAULT; 7617 } 7618 7619 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7620 return -TARGET_EFAULT; 7621 } 7622 7623 __put_user(host_tx->modes, &target_tx->modes); 7624 __put_user(host_tx->offset, &target_tx->offset); 7625 __put_user(host_tx->freq, &target_tx->freq); 7626 __put_user(host_tx->maxerror, &target_tx->maxerror); 7627 __put_user(host_tx->esterror, &target_tx->esterror); 7628 __put_user(host_tx->status, &target_tx->status); 7629 __put_user(host_tx->constant, &target_tx->constant); 7630 __put_user(host_tx->precision, &target_tx->precision); 7631 __put_user(host_tx->tolerance, &target_tx->tolerance); 7632 __put_user(host_tx->tick, &target_tx->tick); 7633 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7634 __put_user(host_tx->jitter, &target_tx->jitter); 7635 __put_user(host_tx->shift, &target_tx->shift); 7636 __put_user(host_tx->stabil, &target_tx->stabil); 7637 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7638 __put_user(host_tx->calcnt, &target_tx->calcnt); 7639 __put_user(host_tx->errcnt, &target_tx->errcnt); 7640 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7641 __put_user(host_tx->tai, &target_tx->tai); 7642 7643 unlock_user_struct(target_tx, target_addr, 1); 7644 return 0; 7645 } 7646 #endif 7647 7648 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID 7649 #define sigev_notify_thread_id _sigev_un._tid 7650 #endif 7651 7652 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7653 abi_ulong target_addr) 7654 { 7655 struct target_sigevent *target_sevp; 7656 7657 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7658 return -TARGET_EFAULT; 7659 } 7660 7661 /* This union is awkward on 64 bit systems because it has a 32 bit 7662 * integer and a pointer in it; we follow the conversion approach 7663 * used for handling sigval types in signal.c so the guest should get 7664 * the correct value back even if we did a 64 bit byteswap and it's 7665 * using the 32 bit integer. 7666 */ 7667 host_sevp->sigev_value.sival_ptr = 7668 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7669 host_sevp->sigev_signo = 7670 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7671 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7672 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid); 7673 7674 unlock_user_struct(target_sevp, target_addr, 1); 7675 return 0; 7676 } 7677 7678 #if defined(TARGET_NR_mlockall) 7679 static inline int target_to_host_mlockall_arg(int arg) 7680 { 7681 int result = 0; 7682 7683 if (arg & TARGET_MCL_CURRENT) { 7684 result |= MCL_CURRENT; 7685 } 7686 if (arg & TARGET_MCL_FUTURE) { 7687 result |= MCL_FUTURE; 7688 } 7689 #ifdef MCL_ONFAULT 7690 if (arg & TARGET_MCL_ONFAULT) { 7691 result |= MCL_ONFAULT; 7692 } 7693 #endif 7694 7695 return result; 7696 } 7697 #endif 7698 7699 static inline int target_to_host_msync_arg(abi_long arg) 7700 { 7701 return ((arg & TARGET_MS_ASYNC) ? MS_ASYNC : 0) | 7702 ((arg & TARGET_MS_INVALIDATE) ? MS_INVALIDATE : 0) | 7703 ((arg & TARGET_MS_SYNC) ? MS_SYNC : 0) | 7704 (arg & ~(TARGET_MS_ASYNC | TARGET_MS_INVALIDATE | TARGET_MS_SYNC)); 7705 } 7706 7707 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 7708 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 7709 defined(TARGET_NR_newfstatat)) 7710 static inline abi_long host_to_target_stat64(CPUArchState *cpu_env, 7711 abi_ulong target_addr, 7712 struct stat *host_st) 7713 { 7714 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7715 if (cpu_env->eabi) { 7716 struct target_eabi_stat64 *target_st; 7717 7718 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7719 return -TARGET_EFAULT; 7720 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7721 __put_user(host_st->st_dev, &target_st->st_dev); 7722 __put_user(host_st->st_ino, &target_st->st_ino); 7723 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7724 __put_user(host_st->st_ino, &target_st->__st_ino); 7725 #endif 7726 __put_user(host_st->st_mode, &target_st->st_mode); 7727 __put_user(host_st->st_nlink, &target_st->st_nlink); 7728 __put_user(host_st->st_uid, &target_st->st_uid); 7729 __put_user(host_st->st_gid, &target_st->st_gid); 7730 __put_user(host_st->st_rdev, &target_st->st_rdev); 7731 __put_user(host_st->st_size, &target_st->st_size); 7732 __put_user(host_st->st_blksize, &target_st->st_blksize); 7733 __put_user(host_st->st_blocks, &target_st->st_blocks); 7734 __put_user(host_st->st_atime, &target_st->target_st_atime); 7735 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7736 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7737 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7738 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7739 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7740 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7741 #endif 7742 unlock_user_struct(target_st, target_addr, 1); 7743 } else 7744 #endif 7745 { 7746 #if defined(TARGET_HAS_STRUCT_STAT64) 7747 struct target_stat64 *target_st; 7748 #else 7749 struct target_stat *target_st; 7750 #endif 7751 7752 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7753 return -TARGET_EFAULT; 7754 memset(target_st, 0, sizeof(*target_st)); 7755 __put_user(host_st->st_dev, &target_st->st_dev); 7756 __put_user(host_st->st_ino, &target_st->st_ino); 7757 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7758 __put_user(host_st->st_ino, &target_st->__st_ino); 7759 #endif 7760 __put_user(host_st->st_mode, &target_st->st_mode); 7761 __put_user(host_st->st_nlink, &target_st->st_nlink); 7762 __put_user(host_st->st_uid, &target_st->st_uid); 7763 __put_user(host_st->st_gid, &target_st->st_gid); 7764 __put_user(host_st->st_rdev, &target_st->st_rdev); 7765 /* XXX: better use of kernel struct */ 7766 __put_user(host_st->st_size, &target_st->st_size); 7767 __put_user(host_st->st_blksize, &target_st->st_blksize); 7768 __put_user(host_st->st_blocks, &target_st->st_blocks); 7769 __put_user(host_st->st_atime, &target_st->target_st_atime); 7770 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7771 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7772 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7773 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7774 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7775 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7776 #endif 7777 unlock_user_struct(target_st, target_addr, 1); 7778 } 7779 7780 return 0; 7781 } 7782 #endif 7783 7784 #if defined(TARGET_NR_statx) && defined(__NR_statx) 7785 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 7786 abi_ulong target_addr) 7787 { 7788 struct target_statx *target_stx; 7789 7790 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 7791 return -TARGET_EFAULT; 7792 } 7793 memset(target_stx, 0, sizeof(*target_stx)); 7794 7795 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 7796 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 7797 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 7798 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 7799 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 7800 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 7801 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 7802 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 7803 __put_user(host_stx->stx_size, &target_stx->stx_size); 7804 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 7805 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 7806 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 7807 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 7808 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 7809 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 7810 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 7811 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 7812 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 7813 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 7814 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 7815 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 7816 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 7817 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 7818 7819 unlock_user_struct(target_stx, target_addr, 1); 7820 7821 return 0; 7822 } 7823 #endif 7824 7825 static int do_sys_futex(int *uaddr, int op, int val, 7826 const struct timespec *timeout, int *uaddr2, 7827 int val3) 7828 { 7829 #if HOST_LONG_BITS == 64 7830 #if defined(__NR_futex) 7831 /* always a 64-bit time_t, it doesn't define _time64 version */ 7832 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7833 7834 #endif 7835 #else /* HOST_LONG_BITS == 64 */ 7836 #if defined(__NR_futex_time64) 7837 if (sizeof(timeout->tv_sec) == 8) { 7838 /* _time64 function on 32bit arch */ 7839 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 7840 } 7841 #endif 7842 #if defined(__NR_futex) 7843 /* old function on 32bit arch */ 7844 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7845 #endif 7846 #endif /* HOST_LONG_BITS == 64 */ 7847 g_assert_not_reached(); 7848 } 7849 7850 static int do_safe_futex(int *uaddr, int op, int val, 7851 const struct timespec *timeout, int *uaddr2, 7852 int val3) 7853 { 7854 #if HOST_LONG_BITS == 64 7855 #if defined(__NR_futex) 7856 /* always a 64-bit time_t, it doesn't define _time64 version */ 7857 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7858 #endif 7859 #else /* HOST_LONG_BITS == 64 */ 7860 #if defined(__NR_futex_time64) 7861 if (sizeof(timeout->tv_sec) == 8) { 7862 /* _time64 function on 32bit arch */ 7863 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 7864 val3)); 7865 } 7866 #endif 7867 #if defined(__NR_futex) 7868 /* old function on 32bit arch */ 7869 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7870 #endif 7871 #endif /* HOST_LONG_BITS == 64 */ 7872 return -TARGET_ENOSYS; 7873 } 7874 7875 /* ??? Using host futex calls even when target atomic operations 7876 are not really atomic probably breaks things. However implementing 7877 futexes locally would make futexes shared between multiple processes 7878 tricky. However they're probably useless because guest atomic 7879 operations won't work either. */ 7880 #if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64) 7881 static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr, 7882 int op, int val, target_ulong timeout, 7883 target_ulong uaddr2, int val3) 7884 { 7885 struct timespec ts, *pts = NULL; 7886 void *haddr2 = NULL; 7887 int base_op; 7888 7889 /* We assume FUTEX_* constants are the same on both host and target. */ 7890 #ifdef FUTEX_CMD_MASK 7891 base_op = op & FUTEX_CMD_MASK; 7892 #else 7893 base_op = op; 7894 #endif 7895 switch (base_op) { 7896 case FUTEX_WAIT: 7897 case FUTEX_WAIT_BITSET: 7898 val = tswap32(val); 7899 break; 7900 case FUTEX_WAIT_REQUEUE_PI: 7901 val = tswap32(val); 7902 haddr2 = g2h(cpu, uaddr2); 7903 break; 7904 case FUTEX_LOCK_PI: 7905 case FUTEX_LOCK_PI2: 7906 break; 7907 case FUTEX_WAKE: 7908 case FUTEX_WAKE_BITSET: 7909 case FUTEX_TRYLOCK_PI: 7910 case FUTEX_UNLOCK_PI: 7911 timeout = 0; 7912 break; 7913 case FUTEX_FD: 7914 val = target_to_host_signal(val); 7915 timeout = 0; 7916 break; 7917 case FUTEX_CMP_REQUEUE: 7918 case FUTEX_CMP_REQUEUE_PI: 7919 val3 = tswap32(val3); 7920 /* fall through */ 7921 case FUTEX_REQUEUE: 7922 case FUTEX_WAKE_OP: 7923 /* 7924 * For these, the 4th argument is not TIMEOUT, but VAL2. 7925 * But the prototype of do_safe_futex takes a pointer, so 7926 * insert casts to satisfy the compiler. We do not need 7927 * to tswap VAL2 since it's not compared to guest memory. 7928 */ 7929 pts = (struct timespec *)(uintptr_t)timeout; 7930 timeout = 0; 7931 haddr2 = g2h(cpu, uaddr2); 7932 break; 7933 default: 7934 return -TARGET_ENOSYS; 7935 } 7936 if (timeout) { 7937 pts = &ts; 7938 if (time64 7939 ? target_to_host_timespec64(pts, timeout) 7940 : target_to_host_timespec(pts, timeout)) { 7941 return -TARGET_EFAULT; 7942 } 7943 } 7944 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3); 7945 } 7946 #endif 7947 7948 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7949 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7950 abi_long handle, abi_long mount_id, 7951 abi_long flags) 7952 { 7953 struct file_handle *target_fh; 7954 struct file_handle *fh; 7955 int mid = 0; 7956 abi_long ret; 7957 char *name; 7958 unsigned int size, total_size; 7959 7960 if (get_user_s32(size, handle)) { 7961 return -TARGET_EFAULT; 7962 } 7963 7964 name = lock_user_string(pathname); 7965 if (!name) { 7966 return -TARGET_EFAULT; 7967 } 7968 7969 total_size = sizeof(struct file_handle) + size; 7970 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7971 if (!target_fh) { 7972 unlock_user(name, pathname, 0); 7973 return -TARGET_EFAULT; 7974 } 7975 7976 fh = g_malloc0(total_size); 7977 fh->handle_bytes = size; 7978 7979 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7980 unlock_user(name, pathname, 0); 7981 7982 /* man name_to_handle_at(2): 7983 * Other than the use of the handle_bytes field, the caller should treat 7984 * the file_handle structure as an opaque data type 7985 */ 7986 7987 memcpy(target_fh, fh, total_size); 7988 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7989 target_fh->handle_type = tswap32(fh->handle_type); 7990 g_free(fh); 7991 unlock_user(target_fh, handle, total_size); 7992 7993 if (put_user_s32(mid, mount_id)) { 7994 return -TARGET_EFAULT; 7995 } 7996 7997 return ret; 7998 7999 } 8000 #endif 8001 8002 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8003 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 8004 abi_long flags) 8005 { 8006 struct file_handle *target_fh; 8007 struct file_handle *fh; 8008 unsigned int size, total_size; 8009 abi_long ret; 8010 8011 if (get_user_s32(size, handle)) { 8012 return -TARGET_EFAULT; 8013 } 8014 8015 total_size = sizeof(struct file_handle) + size; 8016 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 8017 if (!target_fh) { 8018 return -TARGET_EFAULT; 8019 } 8020 8021 fh = g_memdup(target_fh, total_size); 8022 fh->handle_bytes = size; 8023 fh->handle_type = tswap32(target_fh->handle_type); 8024 8025 ret = get_errno(open_by_handle_at(mount_fd, fh, 8026 target_to_host_bitmask(flags, fcntl_flags_tbl))); 8027 8028 g_free(fh); 8029 8030 unlock_user(target_fh, handle, total_size); 8031 8032 return ret; 8033 } 8034 #endif 8035 8036 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 8037 8038 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 8039 { 8040 int host_flags; 8041 target_sigset_t *target_mask; 8042 sigset_t host_mask; 8043 abi_long ret; 8044 8045 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 8046 return -TARGET_EINVAL; 8047 } 8048 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 8049 return -TARGET_EFAULT; 8050 } 8051 8052 target_to_host_sigset(&host_mask, target_mask); 8053 8054 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 8055 8056 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 8057 if (ret >= 0) { 8058 fd_trans_register(ret, &target_signalfd_trans); 8059 } 8060 8061 unlock_user_struct(target_mask, mask, 0); 8062 8063 return ret; 8064 } 8065 #endif 8066 8067 /* Map host to target signal numbers for the wait family of syscalls. 8068 Assume all other status bits are the same. */ 8069 int host_to_target_waitstatus(int status) 8070 { 8071 if (WIFSIGNALED(status)) { 8072 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 8073 } 8074 if (WIFSTOPPED(status)) { 8075 return (host_to_target_signal(WSTOPSIG(status)) << 8) 8076 | (status & 0xff); 8077 } 8078 return status; 8079 } 8080 8081 static int open_self_cmdline(CPUArchState *cpu_env, int fd) 8082 { 8083 CPUState *cpu = env_cpu(cpu_env); 8084 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 8085 int i; 8086 8087 for (i = 0; i < bprm->argc; i++) { 8088 size_t len = strlen(bprm->argv[i]) + 1; 8089 8090 if (write(fd, bprm->argv[i], len) != len) { 8091 return -1; 8092 } 8093 } 8094 8095 return 0; 8096 } 8097 8098 struct open_self_maps_data { 8099 TaskState *ts; 8100 IntervalTreeRoot *host_maps; 8101 int fd; 8102 bool smaps; 8103 }; 8104 8105 /* 8106 * Subroutine to output one line of /proc/self/maps, 8107 * or one region of /proc/self/smaps. 8108 */ 8109 8110 #ifdef TARGET_HPPA 8111 # define test_stack(S, E, L) (E == L) 8112 #else 8113 # define test_stack(S, E, L) (S == L) 8114 #endif 8115 8116 static void open_self_maps_4(const struct open_self_maps_data *d, 8117 const MapInfo *mi, abi_ptr start, 8118 abi_ptr end, unsigned flags) 8119 { 8120 const struct image_info *info = d->ts->info; 8121 const char *path = mi->path; 8122 uint64_t offset; 8123 int fd = d->fd; 8124 int count; 8125 8126 if (test_stack(start, end, info->stack_limit)) { 8127 path = "[stack]"; 8128 } else if (start == info->brk) { 8129 path = "[heap]"; 8130 } 8131 8132 /* Except null device (MAP_ANON), adjust offset for this fragment. */ 8133 offset = mi->offset; 8134 if (mi->dev) { 8135 uintptr_t hstart = (uintptr_t)g2h_untagged(start); 8136 offset += hstart - mi->itree.start; 8137 } 8138 8139 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 8140 " %c%c%c%c %08" PRIx64 " %02x:%02x %"PRId64, 8141 start, end, 8142 (flags & PAGE_READ) ? 'r' : '-', 8143 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 8144 (flags & PAGE_EXEC) ? 'x' : '-', 8145 mi->is_priv ? 'p' : 's', 8146 offset, major(mi->dev), minor(mi->dev), 8147 (uint64_t)mi->inode); 8148 if (path) { 8149 dprintf(fd, "%*s%s\n", 73 - count, "", path); 8150 } else { 8151 dprintf(fd, "\n"); 8152 } 8153 8154 if (d->smaps) { 8155 unsigned long size = end - start; 8156 unsigned long page_size_kb = TARGET_PAGE_SIZE >> 10; 8157 unsigned long size_kb = size >> 10; 8158 8159 dprintf(fd, "Size: %lu kB\n" 8160 "KernelPageSize: %lu kB\n" 8161 "MMUPageSize: %lu kB\n" 8162 "Rss: 0 kB\n" 8163 "Pss: 0 kB\n" 8164 "Pss_Dirty: 0 kB\n" 8165 "Shared_Clean: 0 kB\n" 8166 "Shared_Dirty: 0 kB\n" 8167 "Private_Clean: 0 kB\n" 8168 "Private_Dirty: 0 kB\n" 8169 "Referenced: 0 kB\n" 8170 "Anonymous: 0 kB\n" 8171 "LazyFree: 0 kB\n" 8172 "AnonHugePages: 0 kB\n" 8173 "ShmemPmdMapped: 0 kB\n" 8174 "FilePmdMapped: 0 kB\n" 8175 "Shared_Hugetlb: 0 kB\n" 8176 "Private_Hugetlb: 0 kB\n" 8177 "Swap: 0 kB\n" 8178 "SwapPss: 0 kB\n" 8179 "Locked: 0 kB\n" 8180 "THPeligible: 0\n" 8181 "VmFlags:%s%s%s%s%s%s%s%s\n", 8182 size_kb, page_size_kb, page_size_kb, 8183 (flags & PAGE_READ) ? " rd" : "", 8184 (flags & PAGE_WRITE_ORG) ? " wr" : "", 8185 (flags & PAGE_EXEC) ? " ex" : "", 8186 mi->is_priv ? "" : " sh", 8187 (flags & PAGE_READ) ? " mr" : "", 8188 (flags & PAGE_WRITE_ORG) ? " mw" : "", 8189 (flags & PAGE_EXEC) ? " me" : "", 8190 mi->is_priv ? "" : " ms"); 8191 } 8192 } 8193 8194 /* 8195 * Callback for walk_memory_regions, when read_self_maps() fails. 8196 * Proceed without the benefit of host /proc/self/maps cross-check. 8197 */ 8198 static int open_self_maps_3(void *opaque, target_ulong guest_start, 8199 target_ulong guest_end, unsigned long flags) 8200 { 8201 static const MapInfo mi = { .is_priv = true }; 8202 8203 open_self_maps_4(opaque, &mi, guest_start, guest_end, flags); 8204 return 0; 8205 } 8206 8207 /* 8208 * Callback for walk_memory_regions, when read_self_maps() succeeds. 8209 */ 8210 static int open_self_maps_2(void *opaque, target_ulong guest_start, 8211 target_ulong guest_end, unsigned long flags) 8212 { 8213 const struct open_self_maps_data *d = opaque; 8214 uintptr_t host_start = (uintptr_t)g2h_untagged(guest_start); 8215 uintptr_t host_last = (uintptr_t)g2h_untagged(guest_end - 1); 8216 8217 while (1) { 8218 IntervalTreeNode *n = 8219 interval_tree_iter_first(d->host_maps, host_start, host_start); 8220 MapInfo *mi = container_of(n, MapInfo, itree); 8221 uintptr_t this_hlast = MIN(host_last, n->last); 8222 target_ulong this_gend = h2g(this_hlast) + 1; 8223 8224 open_self_maps_4(d, mi, guest_start, this_gend, flags); 8225 8226 if (this_hlast == host_last) { 8227 return 0; 8228 } 8229 host_start = this_hlast + 1; 8230 guest_start = h2g(host_start); 8231 } 8232 } 8233 8234 static int open_self_maps_1(CPUArchState *env, int fd, bool smaps) 8235 { 8236 struct open_self_maps_data d = { 8237 .ts = env_cpu(env)->opaque, 8238 .host_maps = read_self_maps(), 8239 .fd = fd, 8240 .smaps = smaps 8241 }; 8242 8243 if (d.host_maps) { 8244 walk_memory_regions(&d, open_self_maps_2); 8245 free_self_maps(d.host_maps); 8246 } else { 8247 walk_memory_regions(&d, open_self_maps_3); 8248 } 8249 return 0; 8250 } 8251 8252 static int open_self_maps(CPUArchState *cpu_env, int fd) 8253 { 8254 return open_self_maps_1(cpu_env, fd, false); 8255 } 8256 8257 static int open_self_smaps(CPUArchState *cpu_env, int fd) 8258 { 8259 return open_self_maps_1(cpu_env, fd, true); 8260 } 8261 8262 static int open_self_stat(CPUArchState *cpu_env, int fd) 8263 { 8264 CPUState *cpu = env_cpu(cpu_env); 8265 TaskState *ts = cpu->opaque; 8266 g_autoptr(GString) buf = g_string_new(NULL); 8267 int i; 8268 8269 for (i = 0; i < 44; i++) { 8270 if (i == 0) { 8271 /* pid */ 8272 g_string_printf(buf, FMT_pid " ", getpid()); 8273 } else if (i == 1) { 8274 /* app name */ 8275 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 8276 bin = bin ? bin + 1 : ts->bprm->argv[0]; 8277 g_string_printf(buf, "(%.15s) ", bin); 8278 } else if (i == 2) { 8279 /* task state */ 8280 g_string_assign(buf, "R "); /* we are running right now */ 8281 } else if (i == 3) { 8282 /* ppid */ 8283 g_string_printf(buf, FMT_pid " ", getppid()); 8284 } else if (i == 21) { 8285 /* starttime */ 8286 g_string_printf(buf, "%" PRIu64 " ", ts->start_boottime); 8287 } else if (i == 27) { 8288 /* stack bottom */ 8289 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 8290 } else { 8291 /* for the rest, there is MasterCard */ 8292 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 8293 } 8294 8295 if (write(fd, buf->str, buf->len) != buf->len) { 8296 return -1; 8297 } 8298 } 8299 8300 return 0; 8301 } 8302 8303 static int open_self_auxv(CPUArchState *cpu_env, int fd) 8304 { 8305 CPUState *cpu = env_cpu(cpu_env); 8306 TaskState *ts = cpu->opaque; 8307 abi_ulong auxv = ts->info->saved_auxv; 8308 abi_ulong len = ts->info->auxv_len; 8309 char *ptr; 8310 8311 /* 8312 * Auxiliary vector is stored in target process stack. 8313 * read in whole auxv vector and copy it to file 8314 */ 8315 ptr = lock_user(VERIFY_READ, auxv, len, 0); 8316 if (ptr != NULL) { 8317 while (len > 0) { 8318 ssize_t r; 8319 r = write(fd, ptr, len); 8320 if (r <= 0) { 8321 break; 8322 } 8323 len -= r; 8324 ptr += r; 8325 } 8326 lseek(fd, 0, SEEK_SET); 8327 unlock_user(ptr, auxv, len); 8328 } 8329 8330 return 0; 8331 } 8332 8333 static int is_proc_myself(const char *filename, const char *entry) 8334 { 8335 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 8336 filename += strlen("/proc/"); 8337 if (!strncmp(filename, "self/", strlen("self/"))) { 8338 filename += strlen("self/"); 8339 } else if (*filename >= '1' && *filename <= '9') { 8340 char myself[80]; 8341 snprintf(myself, sizeof(myself), "%d/", getpid()); 8342 if (!strncmp(filename, myself, strlen(myself))) { 8343 filename += strlen(myself); 8344 } else { 8345 return 0; 8346 } 8347 } else { 8348 return 0; 8349 } 8350 if (!strcmp(filename, entry)) { 8351 return 1; 8352 } 8353 } 8354 return 0; 8355 } 8356 8357 static void excp_dump_file(FILE *logfile, CPUArchState *env, 8358 const char *fmt, int code) 8359 { 8360 if (logfile) { 8361 CPUState *cs = env_cpu(env); 8362 8363 fprintf(logfile, fmt, code); 8364 fprintf(logfile, "Failing executable: %s\n", exec_path); 8365 cpu_dump_state(cs, logfile, 0); 8366 open_self_maps(env, fileno(logfile)); 8367 } 8368 } 8369 8370 void target_exception_dump(CPUArchState *env, const char *fmt, int code) 8371 { 8372 /* dump to console */ 8373 excp_dump_file(stderr, env, fmt, code); 8374 8375 /* dump to log file */ 8376 if (qemu_log_separate()) { 8377 FILE *logfile = qemu_log_trylock(); 8378 8379 excp_dump_file(logfile, env, fmt, code); 8380 qemu_log_unlock(logfile); 8381 } 8382 } 8383 8384 #include "target_proc.h" 8385 8386 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \ 8387 defined(HAVE_ARCH_PROC_CPUINFO) || \ 8388 defined(HAVE_ARCH_PROC_HARDWARE) 8389 static int is_proc(const char *filename, const char *entry) 8390 { 8391 return strcmp(filename, entry) == 0; 8392 } 8393 #endif 8394 8395 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8396 static int open_net_route(CPUArchState *cpu_env, int fd) 8397 { 8398 FILE *fp; 8399 char *line = NULL; 8400 size_t len = 0; 8401 ssize_t read; 8402 8403 fp = fopen("/proc/net/route", "r"); 8404 if (fp == NULL) { 8405 return -1; 8406 } 8407 8408 /* read header */ 8409 8410 read = getline(&line, &len, fp); 8411 dprintf(fd, "%s", line); 8412 8413 /* read routes */ 8414 8415 while ((read = getline(&line, &len, fp)) != -1) { 8416 char iface[16]; 8417 uint32_t dest, gw, mask; 8418 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8419 int fields; 8420 8421 fields = sscanf(line, 8422 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8423 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8424 &mask, &mtu, &window, &irtt); 8425 if (fields != 11) { 8426 continue; 8427 } 8428 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8429 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8430 metric, tswap32(mask), mtu, window, irtt); 8431 } 8432 8433 free(line); 8434 fclose(fp); 8435 8436 return 0; 8437 } 8438 #endif 8439 8440 int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *fname, 8441 int flags, mode_t mode, bool safe) 8442 { 8443 g_autofree char *proc_name = NULL; 8444 const char *pathname; 8445 struct fake_open { 8446 const char *filename; 8447 int (*fill)(CPUArchState *cpu_env, int fd); 8448 int (*cmp)(const char *s1, const char *s2); 8449 }; 8450 const struct fake_open *fake_open; 8451 static const struct fake_open fakes[] = { 8452 { "maps", open_self_maps, is_proc_myself }, 8453 { "smaps", open_self_smaps, is_proc_myself }, 8454 { "stat", open_self_stat, is_proc_myself }, 8455 { "auxv", open_self_auxv, is_proc_myself }, 8456 { "cmdline", open_self_cmdline, is_proc_myself }, 8457 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8458 { "/proc/net/route", open_net_route, is_proc }, 8459 #endif 8460 #if defined(HAVE_ARCH_PROC_CPUINFO) 8461 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8462 #endif 8463 #if defined(HAVE_ARCH_PROC_HARDWARE) 8464 { "/proc/hardware", open_hardware, is_proc }, 8465 #endif 8466 { NULL, NULL, NULL } 8467 }; 8468 8469 /* if this is a file from /proc/ filesystem, expand full name */ 8470 proc_name = realpath(fname, NULL); 8471 if (proc_name && strncmp(proc_name, "/proc/", 6) == 0) { 8472 pathname = proc_name; 8473 } else { 8474 pathname = fname; 8475 } 8476 8477 if (is_proc_myself(pathname, "exe")) { 8478 if (safe) { 8479 return safe_openat(dirfd, exec_path, flags, mode); 8480 } else { 8481 return openat(dirfd, exec_path, flags, mode); 8482 } 8483 } 8484 8485 for (fake_open = fakes; fake_open->filename; fake_open++) { 8486 if (fake_open->cmp(pathname, fake_open->filename)) { 8487 break; 8488 } 8489 } 8490 8491 if (fake_open->filename) { 8492 const char *tmpdir; 8493 char filename[PATH_MAX]; 8494 int fd, r; 8495 8496 fd = memfd_create("qemu-open", 0); 8497 if (fd < 0) { 8498 if (errno != ENOSYS) { 8499 return fd; 8500 } 8501 /* create temporary file to map stat to */ 8502 tmpdir = getenv("TMPDIR"); 8503 if (!tmpdir) 8504 tmpdir = "/tmp"; 8505 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8506 fd = mkstemp(filename); 8507 if (fd < 0) { 8508 return fd; 8509 } 8510 unlink(filename); 8511 } 8512 8513 if ((r = fake_open->fill(cpu_env, fd))) { 8514 int e = errno; 8515 close(fd); 8516 errno = e; 8517 return r; 8518 } 8519 lseek(fd, 0, SEEK_SET); 8520 8521 return fd; 8522 } 8523 8524 if (safe) { 8525 return safe_openat(dirfd, path(pathname), flags, mode); 8526 } else { 8527 return openat(dirfd, path(pathname), flags, mode); 8528 } 8529 } 8530 8531 ssize_t do_guest_readlink(const char *pathname, char *buf, size_t bufsiz) 8532 { 8533 ssize_t ret; 8534 8535 if (!pathname || !buf) { 8536 errno = EFAULT; 8537 return -1; 8538 } 8539 8540 if (!bufsiz) { 8541 /* Short circuit this for the magic exe check. */ 8542 errno = EINVAL; 8543 return -1; 8544 } 8545 8546 if (is_proc_myself((const char *)pathname, "exe")) { 8547 /* 8548 * Don't worry about sign mismatch as earlier mapping 8549 * logic would have thrown a bad address error. 8550 */ 8551 ret = MIN(strlen(exec_path), bufsiz); 8552 /* We cannot NUL terminate the string. */ 8553 memcpy(buf, exec_path, ret); 8554 } else { 8555 ret = readlink(path(pathname), buf, bufsiz); 8556 } 8557 8558 return ret; 8559 } 8560 8561 static int do_execv(CPUArchState *cpu_env, int dirfd, 8562 abi_long pathname, abi_long guest_argp, 8563 abi_long guest_envp, int flags, bool is_execveat) 8564 { 8565 int ret; 8566 char **argp, **envp; 8567 int argc, envc; 8568 abi_ulong gp; 8569 abi_ulong addr; 8570 char **q; 8571 void *p; 8572 8573 argc = 0; 8574 8575 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8576 if (get_user_ual(addr, gp)) { 8577 return -TARGET_EFAULT; 8578 } 8579 if (!addr) { 8580 break; 8581 } 8582 argc++; 8583 } 8584 envc = 0; 8585 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8586 if (get_user_ual(addr, gp)) { 8587 return -TARGET_EFAULT; 8588 } 8589 if (!addr) { 8590 break; 8591 } 8592 envc++; 8593 } 8594 8595 argp = g_new0(char *, argc + 1); 8596 envp = g_new0(char *, envc + 1); 8597 8598 for (gp = guest_argp, q = argp; gp; gp += sizeof(abi_ulong), q++) { 8599 if (get_user_ual(addr, gp)) { 8600 goto execve_efault; 8601 } 8602 if (!addr) { 8603 break; 8604 } 8605 *q = lock_user_string(addr); 8606 if (!*q) { 8607 goto execve_efault; 8608 } 8609 } 8610 *q = NULL; 8611 8612 for (gp = guest_envp, q = envp; gp; gp += sizeof(abi_ulong), q++) { 8613 if (get_user_ual(addr, gp)) { 8614 goto execve_efault; 8615 } 8616 if (!addr) { 8617 break; 8618 } 8619 *q = lock_user_string(addr); 8620 if (!*q) { 8621 goto execve_efault; 8622 } 8623 } 8624 *q = NULL; 8625 8626 /* 8627 * Although execve() is not an interruptible syscall it is 8628 * a special case where we must use the safe_syscall wrapper: 8629 * if we allow a signal to happen before we make the host 8630 * syscall then we will 'lose' it, because at the point of 8631 * execve the process leaves QEMU's control. So we use the 8632 * safe syscall wrapper to ensure that we either take the 8633 * signal as a guest signal, or else it does not happen 8634 * before the execve completes and makes it the other 8635 * program's problem. 8636 */ 8637 p = lock_user_string(pathname); 8638 if (!p) { 8639 goto execve_efault; 8640 } 8641 8642 const char *exe = p; 8643 if (is_proc_myself(p, "exe")) { 8644 exe = exec_path; 8645 } 8646 ret = is_execveat 8647 ? safe_execveat(dirfd, exe, argp, envp, flags) 8648 : safe_execve(exe, argp, envp); 8649 ret = get_errno(ret); 8650 8651 unlock_user(p, pathname, 0); 8652 8653 goto execve_end; 8654 8655 execve_efault: 8656 ret = -TARGET_EFAULT; 8657 8658 execve_end: 8659 for (gp = guest_argp, q = argp; *q; gp += sizeof(abi_ulong), q++) { 8660 if (get_user_ual(addr, gp) || !addr) { 8661 break; 8662 } 8663 unlock_user(*q, addr, 0); 8664 } 8665 for (gp = guest_envp, q = envp; *q; gp += sizeof(abi_ulong), q++) { 8666 if (get_user_ual(addr, gp) || !addr) { 8667 break; 8668 } 8669 unlock_user(*q, addr, 0); 8670 } 8671 8672 g_free(argp); 8673 g_free(envp); 8674 return ret; 8675 } 8676 8677 #define TIMER_MAGIC 0x0caf0000 8678 #define TIMER_MAGIC_MASK 0xffff0000 8679 8680 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8681 static target_timer_t get_timer_id(abi_long arg) 8682 { 8683 target_timer_t timerid = arg; 8684 8685 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8686 return -TARGET_EINVAL; 8687 } 8688 8689 timerid &= 0xffff; 8690 8691 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8692 return -TARGET_EINVAL; 8693 } 8694 8695 return timerid; 8696 } 8697 8698 static int target_to_host_cpu_mask(unsigned long *host_mask, 8699 size_t host_size, 8700 abi_ulong target_addr, 8701 size_t target_size) 8702 { 8703 unsigned target_bits = sizeof(abi_ulong) * 8; 8704 unsigned host_bits = sizeof(*host_mask) * 8; 8705 abi_ulong *target_mask; 8706 unsigned i, j; 8707 8708 assert(host_size >= target_size); 8709 8710 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8711 if (!target_mask) { 8712 return -TARGET_EFAULT; 8713 } 8714 memset(host_mask, 0, host_size); 8715 8716 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8717 unsigned bit = i * target_bits; 8718 abi_ulong val; 8719 8720 __get_user(val, &target_mask[i]); 8721 for (j = 0; j < target_bits; j++, bit++) { 8722 if (val & (1UL << j)) { 8723 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8724 } 8725 } 8726 } 8727 8728 unlock_user(target_mask, target_addr, 0); 8729 return 0; 8730 } 8731 8732 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8733 size_t host_size, 8734 abi_ulong target_addr, 8735 size_t target_size) 8736 { 8737 unsigned target_bits = sizeof(abi_ulong) * 8; 8738 unsigned host_bits = sizeof(*host_mask) * 8; 8739 abi_ulong *target_mask; 8740 unsigned i, j; 8741 8742 assert(host_size >= target_size); 8743 8744 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8745 if (!target_mask) { 8746 return -TARGET_EFAULT; 8747 } 8748 8749 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8750 unsigned bit = i * target_bits; 8751 abi_ulong val = 0; 8752 8753 for (j = 0; j < target_bits; j++, bit++) { 8754 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8755 val |= 1UL << j; 8756 } 8757 } 8758 __put_user(val, &target_mask[i]); 8759 } 8760 8761 unlock_user(target_mask, target_addr, target_size); 8762 return 0; 8763 } 8764 8765 #ifdef TARGET_NR_getdents 8766 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count) 8767 { 8768 g_autofree void *hdirp = NULL; 8769 void *tdirp; 8770 int hlen, hoff, toff; 8771 int hreclen, treclen; 8772 off64_t prev_diroff = 0; 8773 8774 hdirp = g_try_malloc(count); 8775 if (!hdirp) { 8776 return -TARGET_ENOMEM; 8777 } 8778 8779 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8780 hlen = sys_getdents(dirfd, hdirp, count); 8781 #else 8782 hlen = sys_getdents64(dirfd, hdirp, count); 8783 #endif 8784 8785 hlen = get_errno(hlen); 8786 if (is_error(hlen)) { 8787 return hlen; 8788 } 8789 8790 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8791 if (!tdirp) { 8792 return -TARGET_EFAULT; 8793 } 8794 8795 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8796 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8797 struct linux_dirent *hde = hdirp + hoff; 8798 #else 8799 struct linux_dirent64 *hde = hdirp + hoff; 8800 #endif 8801 struct target_dirent *tde = tdirp + toff; 8802 int namelen; 8803 uint8_t type; 8804 8805 namelen = strlen(hde->d_name); 8806 hreclen = hde->d_reclen; 8807 treclen = offsetof(struct target_dirent, d_name) + namelen + 2; 8808 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent)); 8809 8810 if (toff + treclen > count) { 8811 /* 8812 * If the host struct is smaller than the target struct, or 8813 * requires less alignment and thus packs into less space, 8814 * then the host can return more entries than we can pass 8815 * on to the guest. 8816 */ 8817 if (toff == 0) { 8818 toff = -TARGET_EINVAL; /* result buffer is too small */ 8819 break; 8820 } 8821 /* 8822 * Return what we have, resetting the file pointer to the 8823 * location of the first record not returned. 8824 */ 8825 lseek64(dirfd, prev_diroff, SEEK_SET); 8826 break; 8827 } 8828 8829 prev_diroff = hde->d_off; 8830 tde->d_ino = tswapal(hde->d_ino); 8831 tde->d_off = tswapal(hde->d_off); 8832 tde->d_reclen = tswap16(treclen); 8833 memcpy(tde->d_name, hde->d_name, namelen + 1); 8834 8835 /* 8836 * The getdents type is in what was formerly a padding byte at the 8837 * end of the structure. 8838 */ 8839 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8840 type = *((uint8_t *)hde + hreclen - 1); 8841 #else 8842 type = hde->d_type; 8843 #endif 8844 *((uint8_t *)tde + treclen - 1) = type; 8845 } 8846 8847 unlock_user(tdirp, arg2, toff); 8848 return toff; 8849 } 8850 #endif /* TARGET_NR_getdents */ 8851 8852 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 8853 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count) 8854 { 8855 g_autofree void *hdirp = NULL; 8856 void *tdirp; 8857 int hlen, hoff, toff; 8858 int hreclen, treclen; 8859 off64_t prev_diroff = 0; 8860 8861 hdirp = g_try_malloc(count); 8862 if (!hdirp) { 8863 return -TARGET_ENOMEM; 8864 } 8865 8866 hlen = get_errno(sys_getdents64(dirfd, hdirp, count)); 8867 if (is_error(hlen)) { 8868 return hlen; 8869 } 8870 8871 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8872 if (!tdirp) { 8873 return -TARGET_EFAULT; 8874 } 8875 8876 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8877 struct linux_dirent64 *hde = hdirp + hoff; 8878 struct target_dirent64 *tde = tdirp + toff; 8879 int namelen; 8880 8881 namelen = strlen(hde->d_name) + 1; 8882 hreclen = hde->d_reclen; 8883 treclen = offsetof(struct target_dirent64, d_name) + namelen; 8884 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64)); 8885 8886 if (toff + treclen > count) { 8887 /* 8888 * If the host struct is smaller than the target struct, or 8889 * requires less alignment and thus packs into less space, 8890 * then the host can return more entries than we can pass 8891 * on to the guest. 8892 */ 8893 if (toff == 0) { 8894 toff = -TARGET_EINVAL; /* result buffer is too small */ 8895 break; 8896 } 8897 /* 8898 * Return what we have, resetting the file pointer to the 8899 * location of the first record not returned. 8900 */ 8901 lseek64(dirfd, prev_diroff, SEEK_SET); 8902 break; 8903 } 8904 8905 prev_diroff = hde->d_off; 8906 tde->d_ino = tswap64(hde->d_ino); 8907 tde->d_off = tswap64(hde->d_off); 8908 tde->d_reclen = tswap16(treclen); 8909 tde->d_type = hde->d_type; 8910 memcpy(tde->d_name, hde->d_name, namelen); 8911 } 8912 8913 unlock_user(tdirp, arg2, toff); 8914 return toff; 8915 } 8916 #endif /* TARGET_NR_getdents64 */ 8917 8918 #if defined(TARGET_NR_riscv_hwprobe) 8919 8920 #define RISCV_HWPROBE_KEY_MVENDORID 0 8921 #define RISCV_HWPROBE_KEY_MARCHID 1 8922 #define RISCV_HWPROBE_KEY_MIMPID 2 8923 8924 #define RISCV_HWPROBE_KEY_BASE_BEHAVIOR 3 8925 #define RISCV_HWPROBE_BASE_BEHAVIOR_IMA (1 << 0) 8926 8927 #define RISCV_HWPROBE_KEY_IMA_EXT_0 4 8928 #define RISCV_HWPROBE_IMA_FD (1 << 0) 8929 #define RISCV_HWPROBE_IMA_C (1 << 1) 8930 8931 #define RISCV_HWPROBE_KEY_CPUPERF_0 5 8932 #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0) 8933 #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0) 8934 #define RISCV_HWPROBE_MISALIGNED_SLOW (2 << 0) 8935 #define RISCV_HWPROBE_MISALIGNED_FAST (3 << 0) 8936 #define RISCV_HWPROBE_MISALIGNED_UNSUPPORTED (4 << 0) 8937 #define RISCV_HWPROBE_MISALIGNED_MASK (7 << 0) 8938 8939 struct riscv_hwprobe { 8940 abi_llong key; 8941 abi_ullong value; 8942 }; 8943 8944 static void risc_hwprobe_fill_pairs(CPURISCVState *env, 8945 struct riscv_hwprobe *pair, 8946 size_t pair_count) 8947 { 8948 const RISCVCPUConfig *cfg = riscv_cpu_cfg(env); 8949 8950 for (; pair_count > 0; pair_count--, pair++) { 8951 abi_llong key; 8952 abi_ullong value; 8953 __put_user(0, &pair->value); 8954 __get_user(key, &pair->key); 8955 switch (key) { 8956 case RISCV_HWPROBE_KEY_MVENDORID: 8957 __put_user(cfg->mvendorid, &pair->value); 8958 break; 8959 case RISCV_HWPROBE_KEY_MARCHID: 8960 __put_user(cfg->marchid, &pair->value); 8961 break; 8962 case RISCV_HWPROBE_KEY_MIMPID: 8963 __put_user(cfg->mimpid, &pair->value); 8964 break; 8965 case RISCV_HWPROBE_KEY_BASE_BEHAVIOR: 8966 value = riscv_has_ext(env, RVI) && 8967 riscv_has_ext(env, RVM) && 8968 riscv_has_ext(env, RVA) ? 8969 RISCV_HWPROBE_BASE_BEHAVIOR_IMA : 0; 8970 __put_user(value, &pair->value); 8971 break; 8972 case RISCV_HWPROBE_KEY_IMA_EXT_0: 8973 value = riscv_has_ext(env, RVF) && 8974 riscv_has_ext(env, RVD) ? 8975 RISCV_HWPROBE_IMA_FD : 0; 8976 value |= riscv_has_ext(env, RVC) ? 8977 RISCV_HWPROBE_IMA_C : pair->value; 8978 __put_user(value, &pair->value); 8979 break; 8980 case RISCV_HWPROBE_KEY_CPUPERF_0: 8981 __put_user(RISCV_HWPROBE_MISALIGNED_FAST, &pair->value); 8982 break; 8983 default: 8984 __put_user(-1, &pair->key); 8985 break; 8986 } 8987 } 8988 } 8989 8990 static int cpu_set_valid(abi_long arg3, abi_long arg4) 8991 { 8992 int ret, i, tmp; 8993 size_t host_mask_size, target_mask_size; 8994 unsigned long *host_mask; 8995 8996 /* 8997 * cpu_set_t represent CPU masks as bit masks of type unsigned long *. 8998 * arg3 contains the cpu count. 8999 */ 9000 tmp = (8 * sizeof(abi_ulong)); 9001 target_mask_size = ((arg3 + tmp - 1) / tmp) * sizeof(abi_ulong); 9002 host_mask_size = (target_mask_size + (sizeof(*host_mask) - 1)) & 9003 ~(sizeof(*host_mask) - 1); 9004 9005 host_mask = alloca(host_mask_size); 9006 9007 ret = target_to_host_cpu_mask(host_mask, host_mask_size, 9008 arg4, target_mask_size); 9009 if (ret != 0) { 9010 return ret; 9011 } 9012 9013 for (i = 0 ; i < host_mask_size / sizeof(*host_mask); i++) { 9014 if (host_mask[i] != 0) { 9015 return 0; 9016 } 9017 } 9018 return -TARGET_EINVAL; 9019 } 9020 9021 static abi_long do_riscv_hwprobe(CPUArchState *cpu_env, abi_long arg1, 9022 abi_long arg2, abi_long arg3, 9023 abi_long arg4, abi_long arg5) 9024 { 9025 int ret; 9026 struct riscv_hwprobe *host_pairs; 9027 9028 /* flags must be 0 */ 9029 if (arg5 != 0) { 9030 return -TARGET_EINVAL; 9031 } 9032 9033 /* check cpu_set */ 9034 if (arg3 != 0) { 9035 ret = cpu_set_valid(arg3, arg4); 9036 if (ret != 0) { 9037 return ret; 9038 } 9039 } else if (arg4 != 0) { 9040 return -TARGET_EINVAL; 9041 } 9042 9043 /* no pairs */ 9044 if (arg2 == 0) { 9045 return 0; 9046 } 9047 9048 host_pairs = lock_user(VERIFY_WRITE, arg1, 9049 sizeof(*host_pairs) * (size_t)arg2, 0); 9050 if (host_pairs == NULL) { 9051 return -TARGET_EFAULT; 9052 } 9053 risc_hwprobe_fill_pairs(cpu_env, host_pairs, arg2); 9054 unlock_user(host_pairs, arg1, sizeof(*host_pairs) * (size_t)arg2); 9055 return 0; 9056 } 9057 #endif /* TARGET_NR_riscv_hwprobe */ 9058 9059 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root) 9060 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old) 9061 #endif 9062 9063 #if defined(TARGET_NR_open_tree) && defined(__NR_open_tree) 9064 #define __NR_sys_open_tree __NR_open_tree 9065 _syscall3(int, sys_open_tree, int, __dfd, const char *, __filename, 9066 unsigned int, __flags) 9067 #endif 9068 9069 #if defined(TARGET_NR_move_mount) && defined(__NR_move_mount) 9070 #define __NR_sys_move_mount __NR_move_mount 9071 _syscall5(int, sys_move_mount, int, __from_dfd, const char *, __from_pathname, 9072 int, __to_dfd, const char *, __to_pathname, unsigned int, flag) 9073 #endif 9074 9075 /* This is an internal helper for do_syscall so that it is easier 9076 * to have a single return point, so that actions, such as logging 9077 * of syscall results, can be performed. 9078 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 9079 */ 9080 static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, 9081 abi_long arg2, abi_long arg3, abi_long arg4, 9082 abi_long arg5, abi_long arg6, abi_long arg7, 9083 abi_long arg8) 9084 { 9085 CPUState *cpu = env_cpu(cpu_env); 9086 abi_long ret; 9087 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 9088 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 9089 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 9090 || defined(TARGET_NR_statx) 9091 struct stat st; 9092 #endif 9093 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 9094 || defined(TARGET_NR_fstatfs) 9095 struct statfs stfs; 9096 #endif 9097 void *p; 9098 9099 switch(num) { 9100 case TARGET_NR_exit: 9101 /* In old applications this may be used to implement _exit(2). 9102 However in threaded applications it is used for thread termination, 9103 and _exit_group is used for application termination. 9104 Do thread termination if we have more then one thread. */ 9105 9106 if (block_signals()) { 9107 return -QEMU_ERESTARTSYS; 9108 } 9109 9110 pthread_mutex_lock(&clone_lock); 9111 9112 if (CPU_NEXT(first_cpu)) { 9113 TaskState *ts = cpu->opaque; 9114 9115 if (ts->child_tidptr) { 9116 put_user_u32(0, ts->child_tidptr); 9117 do_sys_futex(g2h(cpu, ts->child_tidptr), 9118 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 9119 } 9120 9121 object_unparent(OBJECT(cpu)); 9122 object_unref(OBJECT(cpu)); 9123 /* 9124 * At this point the CPU should be unrealized and removed 9125 * from cpu lists. We can clean-up the rest of the thread 9126 * data without the lock held. 9127 */ 9128 9129 pthread_mutex_unlock(&clone_lock); 9130 9131 thread_cpu = NULL; 9132 g_free(ts); 9133 rcu_unregister_thread(); 9134 pthread_exit(NULL); 9135 } 9136 9137 pthread_mutex_unlock(&clone_lock); 9138 preexit_cleanup(cpu_env, arg1); 9139 _exit(arg1); 9140 return 0; /* avoid warning */ 9141 case TARGET_NR_read: 9142 if (arg2 == 0 && arg3 == 0) { 9143 return get_errno(safe_read(arg1, 0, 0)); 9144 } else { 9145 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 9146 return -TARGET_EFAULT; 9147 ret = get_errno(safe_read(arg1, p, arg3)); 9148 if (ret >= 0 && 9149 fd_trans_host_to_target_data(arg1)) { 9150 ret = fd_trans_host_to_target_data(arg1)(p, ret); 9151 } 9152 unlock_user(p, arg2, ret); 9153 } 9154 return ret; 9155 case TARGET_NR_write: 9156 if (arg2 == 0 && arg3 == 0) { 9157 return get_errno(safe_write(arg1, 0, 0)); 9158 } 9159 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 9160 return -TARGET_EFAULT; 9161 if (fd_trans_target_to_host_data(arg1)) { 9162 void *copy = g_malloc(arg3); 9163 memcpy(copy, p, arg3); 9164 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 9165 if (ret >= 0) { 9166 ret = get_errno(safe_write(arg1, copy, ret)); 9167 } 9168 g_free(copy); 9169 } else { 9170 ret = get_errno(safe_write(arg1, p, arg3)); 9171 } 9172 unlock_user(p, arg2, 0); 9173 return ret; 9174 9175 #ifdef TARGET_NR_open 9176 case TARGET_NR_open: 9177 if (!(p = lock_user_string(arg1))) 9178 return -TARGET_EFAULT; 9179 ret = get_errno(do_guest_openat(cpu_env, AT_FDCWD, p, 9180 target_to_host_bitmask(arg2, fcntl_flags_tbl), 9181 arg3, true)); 9182 fd_trans_unregister(ret); 9183 unlock_user(p, arg1, 0); 9184 return ret; 9185 #endif 9186 case TARGET_NR_openat: 9187 if (!(p = lock_user_string(arg2))) 9188 return -TARGET_EFAULT; 9189 ret = get_errno(do_guest_openat(cpu_env, arg1, p, 9190 target_to_host_bitmask(arg3, fcntl_flags_tbl), 9191 arg4, true)); 9192 fd_trans_unregister(ret); 9193 unlock_user(p, arg2, 0); 9194 return ret; 9195 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 9196 case TARGET_NR_name_to_handle_at: 9197 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 9198 return ret; 9199 #endif 9200 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 9201 case TARGET_NR_open_by_handle_at: 9202 ret = do_open_by_handle_at(arg1, arg2, arg3); 9203 fd_trans_unregister(ret); 9204 return ret; 9205 #endif 9206 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 9207 case TARGET_NR_pidfd_open: 9208 return get_errno(pidfd_open(arg1, arg2)); 9209 #endif 9210 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 9211 case TARGET_NR_pidfd_send_signal: 9212 { 9213 siginfo_t uinfo, *puinfo; 9214 9215 if (arg3) { 9216 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9217 if (!p) { 9218 return -TARGET_EFAULT; 9219 } 9220 target_to_host_siginfo(&uinfo, p); 9221 unlock_user(p, arg3, 0); 9222 puinfo = &uinfo; 9223 } else { 9224 puinfo = NULL; 9225 } 9226 ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2), 9227 puinfo, arg4)); 9228 } 9229 return ret; 9230 #endif 9231 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 9232 case TARGET_NR_pidfd_getfd: 9233 return get_errno(pidfd_getfd(arg1, arg2, arg3)); 9234 #endif 9235 case TARGET_NR_close: 9236 fd_trans_unregister(arg1); 9237 return get_errno(close(arg1)); 9238 #if defined(__NR_close_range) && defined(TARGET_NR_close_range) 9239 case TARGET_NR_close_range: 9240 ret = get_errno(sys_close_range(arg1, arg2, arg3)); 9241 if (ret == 0 && !(arg3 & CLOSE_RANGE_CLOEXEC)) { 9242 abi_long fd, maxfd; 9243 maxfd = MIN(arg2, target_fd_max); 9244 for (fd = arg1; fd < maxfd; fd++) { 9245 fd_trans_unregister(fd); 9246 } 9247 } 9248 return ret; 9249 #endif 9250 9251 case TARGET_NR_brk: 9252 return do_brk(arg1); 9253 #ifdef TARGET_NR_fork 9254 case TARGET_NR_fork: 9255 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 9256 #endif 9257 #ifdef TARGET_NR_waitpid 9258 case TARGET_NR_waitpid: 9259 { 9260 int status; 9261 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 9262 if (!is_error(ret) && arg2 && ret 9263 && put_user_s32(host_to_target_waitstatus(status), arg2)) 9264 return -TARGET_EFAULT; 9265 } 9266 return ret; 9267 #endif 9268 #ifdef TARGET_NR_waitid 9269 case TARGET_NR_waitid: 9270 { 9271 siginfo_t info; 9272 info.si_pid = 0; 9273 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 9274 if (!is_error(ret) && arg3 && info.si_pid != 0) { 9275 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 9276 return -TARGET_EFAULT; 9277 host_to_target_siginfo(p, &info); 9278 unlock_user(p, arg3, sizeof(target_siginfo_t)); 9279 } 9280 } 9281 return ret; 9282 #endif 9283 #ifdef TARGET_NR_creat /* not on alpha */ 9284 case TARGET_NR_creat: 9285 if (!(p = lock_user_string(arg1))) 9286 return -TARGET_EFAULT; 9287 ret = get_errno(creat(p, arg2)); 9288 fd_trans_unregister(ret); 9289 unlock_user(p, arg1, 0); 9290 return ret; 9291 #endif 9292 #ifdef TARGET_NR_link 9293 case TARGET_NR_link: 9294 { 9295 void * p2; 9296 p = lock_user_string(arg1); 9297 p2 = lock_user_string(arg2); 9298 if (!p || !p2) 9299 ret = -TARGET_EFAULT; 9300 else 9301 ret = get_errno(link(p, p2)); 9302 unlock_user(p2, arg2, 0); 9303 unlock_user(p, arg1, 0); 9304 } 9305 return ret; 9306 #endif 9307 #if defined(TARGET_NR_linkat) 9308 case TARGET_NR_linkat: 9309 { 9310 void * p2 = NULL; 9311 if (!arg2 || !arg4) 9312 return -TARGET_EFAULT; 9313 p = lock_user_string(arg2); 9314 p2 = lock_user_string(arg4); 9315 if (!p || !p2) 9316 ret = -TARGET_EFAULT; 9317 else 9318 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 9319 unlock_user(p, arg2, 0); 9320 unlock_user(p2, arg4, 0); 9321 } 9322 return ret; 9323 #endif 9324 #ifdef TARGET_NR_unlink 9325 case TARGET_NR_unlink: 9326 if (!(p = lock_user_string(arg1))) 9327 return -TARGET_EFAULT; 9328 ret = get_errno(unlink(p)); 9329 unlock_user(p, arg1, 0); 9330 return ret; 9331 #endif 9332 #if defined(TARGET_NR_unlinkat) 9333 case TARGET_NR_unlinkat: 9334 if (!(p = lock_user_string(arg2))) 9335 return -TARGET_EFAULT; 9336 ret = get_errno(unlinkat(arg1, p, arg3)); 9337 unlock_user(p, arg2, 0); 9338 return ret; 9339 #endif 9340 case TARGET_NR_execveat: 9341 return do_execv(cpu_env, arg1, arg2, arg3, arg4, arg5, true); 9342 case TARGET_NR_execve: 9343 return do_execv(cpu_env, AT_FDCWD, arg1, arg2, arg3, 0, false); 9344 case TARGET_NR_chdir: 9345 if (!(p = lock_user_string(arg1))) 9346 return -TARGET_EFAULT; 9347 ret = get_errno(chdir(p)); 9348 unlock_user(p, arg1, 0); 9349 return ret; 9350 #ifdef TARGET_NR_time 9351 case TARGET_NR_time: 9352 { 9353 time_t host_time; 9354 ret = get_errno(time(&host_time)); 9355 if (!is_error(ret) 9356 && arg1 9357 && put_user_sal(host_time, arg1)) 9358 return -TARGET_EFAULT; 9359 } 9360 return ret; 9361 #endif 9362 #ifdef TARGET_NR_mknod 9363 case TARGET_NR_mknod: 9364 if (!(p = lock_user_string(arg1))) 9365 return -TARGET_EFAULT; 9366 ret = get_errno(mknod(p, arg2, arg3)); 9367 unlock_user(p, arg1, 0); 9368 return ret; 9369 #endif 9370 #if defined(TARGET_NR_mknodat) 9371 case TARGET_NR_mknodat: 9372 if (!(p = lock_user_string(arg2))) 9373 return -TARGET_EFAULT; 9374 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 9375 unlock_user(p, arg2, 0); 9376 return ret; 9377 #endif 9378 #ifdef TARGET_NR_chmod 9379 case TARGET_NR_chmod: 9380 if (!(p = lock_user_string(arg1))) 9381 return -TARGET_EFAULT; 9382 ret = get_errno(chmod(p, arg2)); 9383 unlock_user(p, arg1, 0); 9384 return ret; 9385 #endif 9386 #ifdef TARGET_NR_lseek 9387 case TARGET_NR_lseek: 9388 return get_errno(lseek(arg1, arg2, arg3)); 9389 #endif 9390 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 9391 /* Alpha specific */ 9392 case TARGET_NR_getxpid: 9393 cpu_env->ir[IR_A4] = getppid(); 9394 return get_errno(getpid()); 9395 #endif 9396 #ifdef TARGET_NR_getpid 9397 case TARGET_NR_getpid: 9398 return get_errno(getpid()); 9399 #endif 9400 case TARGET_NR_mount: 9401 { 9402 /* need to look at the data field */ 9403 void *p2, *p3; 9404 9405 if (arg1) { 9406 p = lock_user_string(arg1); 9407 if (!p) { 9408 return -TARGET_EFAULT; 9409 } 9410 } else { 9411 p = NULL; 9412 } 9413 9414 p2 = lock_user_string(arg2); 9415 if (!p2) { 9416 if (arg1) { 9417 unlock_user(p, arg1, 0); 9418 } 9419 return -TARGET_EFAULT; 9420 } 9421 9422 if (arg3) { 9423 p3 = lock_user_string(arg3); 9424 if (!p3) { 9425 if (arg1) { 9426 unlock_user(p, arg1, 0); 9427 } 9428 unlock_user(p2, arg2, 0); 9429 return -TARGET_EFAULT; 9430 } 9431 } else { 9432 p3 = NULL; 9433 } 9434 9435 /* FIXME - arg5 should be locked, but it isn't clear how to 9436 * do that since it's not guaranteed to be a NULL-terminated 9437 * string. 9438 */ 9439 if (!arg5) { 9440 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 9441 } else { 9442 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 9443 } 9444 ret = get_errno(ret); 9445 9446 if (arg1) { 9447 unlock_user(p, arg1, 0); 9448 } 9449 unlock_user(p2, arg2, 0); 9450 if (arg3) { 9451 unlock_user(p3, arg3, 0); 9452 } 9453 } 9454 return ret; 9455 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 9456 #if defined(TARGET_NR_umount) 9457 case TARGET_NR_umount: 9458 #endif 9459 #if defined(TARGET_NR_oldumount) 9460 case TARGET_NR_oldumount: 9461 #endif 9462 if (!(p = lock_user_string(arg1))) 9463 return -TARGET_EFAULT; 9464 ret = get_errno(umount(p)); 9465 unlock_user(p, arg1, 0); 9466 return ret; 9467 #endif 9468 #if defined(TARGET_NR_move_mount) && defined(__NR_move_mount) 9469 case TARGET_NR_move_mount: 9470 { 9471 void *p2, *p4; 9472 9473 if (!arg2 || !arg4) { 9474 return -TARGET_EFAULT; 9475 } 9476 9477 p2 = lock_user_string(arg2); 9478 if (!p2) { 9479 return -TARGET_EFAULT; 9480 } 9481 9482 p4 = lock_user_string(arg4); 9483 if (!p4) { 9484 unlock_user(p2, arg2, 0); 9485 return -TARGET_EFAULT; 9486 } 9487 ret = get_errno(sys_move_mount(arg1, p2, arg3, p4, arg5)); 9488 9489 unlock_user(p2, arg2, 0); 9490 unlock_user(p4, arg4, 0); 9491 9492 return ret; 9493 } 9494 #endif 9495 #if defined(TARGET_NR_open_tree) && defined(__NR_open_tree) 9496 case TARGET_NR_open_tree: 9497 { 9498 void *p2; 9499 int host_flags; 9500 9501 if (!arg2) { 9502 return -TARGET_EFAULT; 9503 } 9504 9505 p2 = lock_user_string(arg2); 9506 if (!p2) { 9507 return -TARGET_EFAULT; 9508 } 9509 9510 host_flags = arg3 & ~TARGET_O_CLOEXEC; 9511 if (arg3 & TARGET_O_CLOEXEC) { 9512 host_flags |= O_CLOEXEC; 9513 } 9514 9515 ret = get_errno(sys_open_tree(arg1, p2, host_flags)); 9516 9517 unlock_user(p2, arg2, 0); 9518 9519 return ret; 9520 } 9521 #endif 9522 #ifdef TARGET_NR_stime /* not on alpha */ 9523 case TARGET_NR_stime: 9524 { 9525 struct timespec ts; 9526 ts.tv_nsec = 0; 9527 if (get_user_sal(ts.tv_sec, arg1)) { 9528 return -TARGET_EFAULT; 9529 } 9530 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 9531 } 9532 #endif 9533 #ifdef TARGET_NR_alarm /* not on alpha */ 9534 case TARGET_NR_alarm: 9535 return alarm(arg1); 9536 #endif 9537 #ifdef TARGET_NR_pause /* not on alpha */ 9538 case TARGET_NR_pause: 9539 if (!block_signals()) { 9540 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 9541 } 9542 return -TARGET_EINTR; 9543 #endif 9544 #ifdef TARGET_NR_utime 9545 case TARGET_NR_utime: 9546 { 9547 struct utimbuf tbuf, *host_tbuf; 9548 struct target_utimbuf *target_tbuf; 9549 if (arg2) { 9550 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 9551 return -TARGET_EFAULT; 9552 tbuf.actime = tswapal(target_tbuf->actime); 9553 tbuf.modtime = tswapal(target_tbuf->modtime); 9554 unlock_user_struct(target_tbuf, arg2, 0); 9555 host_tbuf = &tbuf; 9556 } else { 9557 host_tbuf = NULL; 9558 } 9559 if (!(p = lock_user_string(arg1))) 9560 return -TARGET_EFAULT; 9561 ret = get_errno(utime(p, host_tbuf)); 9562 unlock_user(p, arg1, 0); 9563 } 9564 return ret; 9565 #endif 9566 #ifdef TARGET_NR_utimes 9567 case TARGET_NR_utimes: 9568 { 9569 struct timeval *tvp, tv[2]; 9570 if (arg2) { 9571 if (copy_from_user_timeval(&tv[0], arg2) 9572 || copy_from_user_timeval(&tv[1], 9573 arg2 + sizeof(struct target_timeval))) 9574 return -TARGET_EFAULT; 9575 tvp = tv; 9576 } else { 9577 tvp = NULL; 9578 } 9579 if (!(p = lock_user_string(arg1))) 9580 return -TARGET_EFAULT; 9581 ret = get_errno(utimes(p, tvp)); 9582 unlock_user(p, arg1, 0); 9583 } 9584 return ret; 9585 #endif 9586 #if defined(TARGET_NR_futimesat) 9587 case TARGET_NR_futimesat: 9588 { 9589 struct timeval *tvp, tv[2]; 9590 if (arg3) { 9591 if (copy_from_user_timeval(&tv[0], arg3) 9592 || copy_from_user_timeval(&tv[1], 9593 arg3 + sizeof(struct target_timeval))) 9594 return -TARGET_EFAULT; 9595 tvp = tv; 9596 } else { 9597 tvp = NULL; 9598 } 9599 if (!(p = lock_user_string(arg2))) { 9600 return -TARGET_EFAULT; 9601 } 9602 ret = get_errno(futimesat(arg1, path(p), tvp)); 9603 unlock_user(p, arg2, 0); 9604 } 9605 return ret; 9606 #endif 9607 #ifdef TARGET_NR_access 9608 case TARGET_NR_access: 9609 if (!(p = lock_user_string(arg1))) { 9610 return -TARGET_EFAULT; 9611 } 9612 ret = get_errno(access(path(p), arg2)); 9613 unlock_user(p, arg1, 0); 9614 return ret; 9615 #endif 9616 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 9617 case TARGET_NR_faccessat: 9618 if (!(p = lock_user_string(arg2))) { 9619 return -TARGET_EFAULT; 9620 } 9621 ret = get_errno(faccessat(arg1, p, arg3, 0)); 9622 unlock_user(p, arg2, 0); 9623 return ret; 9624 #endif 9625 #if defined(TARGET_NR_faccessat2) 9626 case TARGET_NR_faccessat2: 9627 if (!(p = lock_user_string(arg2))) { 9628 return -TARGET_EFAULT; 9629 } 9630 ret = get_errno(faccessat(arg1, p, arg3, arg4)); 9631 unlock_user(p, arg2, 0); 9632 return ret; 9633 #endif 9634 #ifdef TARGET_NR_nice /* not on alpha */ 9635 case TARGET_NR_nice: 9636 return get_errno(nice(arg1)); 9637 #endif 9638 case TARGET_NR_sync: 9639 sync(); 9640 return 0; 9641 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 9642 case TARGET_NR_syncfs: 9643 return get_errno(syncfs(arg1)); 9644 #endif 9645 case TARGET_NR_kill: 9646 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 9647 #ifdef TARGET_NR_rename 9648 case TARGET_NR_rename: 9649 { 9650 void *p2; 9651 p = lock_user_string(arg1); 9652 p2 = lock_user_string(arg2); 9653 if (!p || !p2) 9654 ret = -TARGET_EFAULT; 9655 else 9656 ret = get_errno(rename(p, p2)); 9657 unlock_user(p2, arg2, 0); 9658 unlock_user(p, arg1, 0); 9659 } 9660 return ret; 9661 #endif 9662 #if defined(TARGET_NR_renameat) 9663 case TARGET_NR_renameat: 9664 { 9665 void *p2; 9666 p = lock_user_string(arg2); 9667 p2 = lock_user_string(arg4); 9668 if (!p || !p2) 9669 ret = -TARGET_EFAULT; 9670 else 9671 ret = get_errno(renameat(arg1, p, arg3, p2)); 9672 unlock_user(p2, arg4, 0); 9673 unlock_user(p, arg2, 0); 9674 } 9675 return ret; 9676 #endif 9677 #if defined(TARGET_NR_renameat2) 9678 case TARGET_NR_renameat2: 9679 { 9680 void *p2; 9681 p = lock_user_string(arg2); 9682 p2 = lock_user_string(arg4); 9683 if (!p || !p2) { 9684 ret = -TARGET_EFAULT; 9685 } else { 9686 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 9687 } 9688 unlock_user(p2, arg4, 0); 9689 unlock_user(p, arg2, 0); 9690 } 9691 return ret; 9692 #endif 9693 #ifdef TARGET_NR_mkdir 9694 case TARGET_NR_mkdir: 9695 if (!(p = lock_user_string(arg1))) 9696 return -TARGET_EFAULT; 9697 ret = get_errno(mkdir(p, arg2)); 9698 unlock_user(p, arg1, 0); 9699 return ret; 9700 #endif 9701 #if defined(TARGET_NR_mkdirat) 9702 case TARGET_NR_mkdirat: 9703 if (!(p = lock_user_string(arg2))) 9704 return -TARGET_EFAULT; 9705 ret = get_errno(mkdirat(arg1, p, arg3)); 9706 unlock_user(p, arg2, 0); 9707 return ret; 9708 #endif 9709 #ifdef TARGET_NR_rmdir 9710 case TARGET_NR_rmdir: 9711 if (!(p = lock_user_string(arg1))) 9712 return -TARGET_EFAULT; 9713 ret = get_errno(rmdir(p)); 9714 unlock_user(p, arg1, 0); 9715 return ret; 9716 #endif 9717 case TARGET_NR_dup: 9718 ret = get_errno(dup(arg1)); 9719 if (ret >= 0) { 9720 fd_trans_dup(arg1, ret); 9721 } 9722 return ret; 9723 #ifdef TARGET_NR_pipe 9724 case TARGET_NR_pipe: 9725 return do_pipe(cpu_env, arg1, 0, 0); 9726 #endif 9727 #ifdef TARGET_NR_pipe2 9728 case TARGET_NR_pipe2: 9729 return do_pipe(cpu_env, arg1, 9730 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 9731 #endif 9732 case TARGET_NR_times: 9733 { 9734 struct target_tms *tmsp; 9735 struct tms tms; 9736 ret = get_errno(times(&tms)); 9737 if (arg1) { 9738 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 9739 if (!tmsp) 9740 return -TARGET_EFAULT; 9741 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 9742 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 9743 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 9744 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 9745 } 9746 if (!is_error(ret)) 9747 ret = host_to_target_clock_t(ret); 9748 } 9749 return ret; 9750 case TARGET_NR_acct: 9751 if (arg1 == 0) { 9752 ret = get_errno(acct(NULL)); 9753 } else { 9754 if (!(p = lock_user_string(arg1))) { 9755 return -TARGET_EFAULT; 9756 } 9757 ret = get_errno(acct(path(p))); 9758 unlock_user(p, arg1, 0); 9759 } 9760 return ret; 9761 #ifdef TARGET_NR_umount2 9762 case TARGET_NR_umount2: 9763 if (!(p = lock_user_string(arg1))) 9764 return -TARGET_EFAULT; 9765 ret = get_errno(umount2(p, arg2)); 9766 unlock_user(p, arg1, 0); 9767 return ret; 9768 #endif 9769 case TARGET_NR_ioctl: 9770 return do_ioctl(arg1, arg2, arg3); 9771 #ifdef TARGET_NR_fcntl 9772 case TARGET_NR_fcntl: 9773 return do_fcntl(arg1, arg2, arg3); 9774 #endif 9775 case TARGET_NR_setpgid: 9776 return get_errno(setpgid(arg1, arg2)); 9777 case TARGET_NR_umask: 9778 return get_errno(umask(arg1)); 9779 case TARGET_NR_chroot: 9780 if (!(p = lock_user_string(arg1))) 9781 return -TARGET_EFAULT; 9782 ret = get_errno(chroot(p)); 9783 unlock_user(p, arg1, 0); 9784 return ret; 9785 #ifdef TARGET_NR_dup2 9786 case TARGET_NR_dup2: 9787 ret = get_errno(dup2(arg1, arg2)); 9788 if (ret >= 0) { 9789 fd_trans_dup(arg1, arg2); 9790 } 9791 return ret; 9792 #endif 9793 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 9794 case TARGET_NR_dup3: 9795 { 9796 int host_flags; 9797 9798 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 9799 return -EINVAL; 9800 } 9801 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 9802 ret = get_errno(dup3(arg1, arg2, host_flags)); 9803 if (ret >= 0) { 9804 fd_trans_dup(arg1, arg2); 9805 } 9806 return ret; 9807 } 9808 #endif 9809 #ifdef TARGET_NR_getppid /* not on alpha */ 9810 case TARGET_NR_getppid: 9811 return get_errno(getppid()); 9812 #endif 9813 #ifdef TARGET_NR_getpgrp 9814 case TARGET_NR_getpgrp: 9815 return get_errno(getpgrp()); 9816 #endif 9817 case TARGET_NR_setsid: 9818 return get_errno(setsid()); 9819 #ifdef TARGET_NR_sigaction 9820 case TARGET_NR_sigaction: 9821 { 9822 #if defined(TARGET_MIPS) 9823 struct target_sigaction act, oact, *pact, *old_act; 9824 9825 if (arg2) { 9826 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9827 return -TARGET_EFAULT; 9828 act._sa_handler = old_act->_sa_handler; 9829 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 9830 act.sa_flags = old_act->sa_flags; 9831 unlock_user_struct(old_act, arg2, 0); 9832 pact = &act; 9833 } else { 9834 pact = NULL; 9835 } 9836 9837 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9838 9839 if (!is_error(ret) && arg3) { 9840 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9841 return -TARGET_EFAULT; 9842 old_act->_sa_handler = oact._sa_handler; 9843 old_act->sa_flags = oact.sa_flags; 9844 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9845 old_act->sa_mask.sig[1] = 0; 9846 old_act->sa_mask.sig[2] = 0; 9847 old_act->sa_mask.sig[3] = 0; 9848 unlock_user_struct(old_act, arg3, 1); 9849 } 9850 #else 9851 struct target_old_sigaction *old_act; 9852 struct target_sigaction act, oact, *pact; 9853 if (arg2) { 9854 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9855 return -TARGET_EFAULT; 9856 act._sa_handler = old_act->_sa_handler; 9857 target_siginitset(&act.sa_mask, old_act->sa_mask); 9858 act.sa_flags = old_act->sa_flags; 9859 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9860 act.sa_restorer = old_act->sa_restorer; 9861 #endif 9862 unlock_user_struct(old_act, arg2, 0); 9863 pact = &act; 9864 } else { 9865 pact = NULL; 9866 } 9867 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9868 if (!is_error(ret) && arg3) { 9869 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9870 return -TARGET_EFAULT; 9871 old_act->_sa_handler = oact._sa_handler; 9872 old_act->sa_mask = oact.sa_mask.sig[0]; 9873 old_act->sa_flags = oact.sa_flags; 9874 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9875 old_act->sa_restorer = oact.sa_restorer; 9876 #endif 9877 unlock_user_struct(old_act, arg3, 1); 9878 } 9879 #endif 9880 } 9881 return ret; 9882 #endif 9883 case TARGET_NR_rt_sigaction: 9884 { 9885 /* 9886 * For Alpha and SPARC this is a 5 argument syscall, with 9887 * a 'restorer' parameter which must be copied into the 9888 * sa_restorer field of the sigaction struct. 9889 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9890 * and arg5 is the sigsetsize. 9891 */ 9892 #if defined(TARGET_ALPHA) 9893 target_ulong sigsetsize = arg4; 9894 target_ulong restorer = arg5; 9895 #elif defined(TARGET_SPARC) 9896 target_ulong restorer = arg4; 9897 target_ulong sigsetsize = arg5; 9898 #else 9899 target_ulong sigsetsize = arg4; 9900 target_ulong restorer = 0; 9901 #endif 9902 struct target_sigaction *act = NULL; 9903 struct target_sigaction *oact = NULL; 9904 9905 if (sigsetsize != sizeof(target_sigset_t)) { 9906 return -TARGET_EINVAL; 9907 } 9908 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9909 return -TARGET_EFAULT; 9910 } 9911 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9912 ret = -TARGET_EFAULT; 9913 } else { 9914 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9915 if (oact) { 9916 unlock_user_struct(oact, arg3, 1); 9917 } 9918 } 9919 if (act) { 9920 unlock_user_struct(act, arg2, 0); 9921 } 9922 } 9923 return ret; 9924 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9925 case TARGET_NR_sgetmask: 9926 { 9927 sigset_t cur_set; 9928 abi_ulong target_set; 9929 ret = do_sigprocmask(0, NULL, &cur_set); 9930 if (!ret) { 9931 host_to_target_old_sigset(&target_set, &cur_set); 9932 ret = target_set; 9933 } 9934 } 9935 return ret; 9936 #endif 9937 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9938 case TARGET_NR_ssetmask: 9939 { 9940 sigset_t set, oset; 9941 abi_ulong target_set = arg1; 9942 target_to_host_old_sigset(&set, &target_set); 9943 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9944 if (!ret) { 9945 host_to_target_old_sigset(&target_set, &oset); 9946 ret = target_set; 9947 } 9948 } 9949 return ret; 9950 #endif 9951 #ifdef TARGET_NR_sigprocmask 9952 case TARGET_NR_sigprocmask: 9953 { 9954 #if defined(TARGET_ALPHA) 9955 sigset_t set, oldset; 9956 abi_ulong mask; 9957 int how; 9958 9959 switch (arg1) { 9960 case TARGET_SIG_BLOCK: 9961 how = SIG_BLOCK; 9962 break; 9963 case TARGET_SIG_UNBLOCK: 9964 how = SIG_UNBLOCK; 9965 break; 9966 case TARGET_SIG_SETMASK: 9967 how = SIG_SETMASK; 9968 break; 9969 default: 9970 return -TARGET_EINVAL; 9971 } 9972 mask = arg2; 9973 target_to_host_old_sigset(&set, &mask); 9974 9975 ret = do_sigprocmask(how, &set, &oldset); 9976 if (!is_error(ret)) { 9977 host_to_target_old_sigset(&mask, &oldset); 9978 ret = mask; 9979 cpu_env->ir[IR_V0] = 0; /* force no error */ 9980 } 9981 #else 9982 sigset_t set, oldset, *set_ptr; 9983 int how; 9984 9985 if (arg2) { 9986 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9987 if (!p) { 9988 return -TARGET_EFAULT; 9989 } 9990 target_to_host_old_sigset(&set, p); 9991 unlock_user(p, arg2, 0); 9992 set_ptr = &set; 9993 switch (arg1) { 9994 case TARGET_SIG_BLOCK: 9995 how = SIG_BLOCK; 9996 break; 9997 case TARGET_SIG_UNBLOCK: 9998 how = SIG_UNBLOCK; 9999 break; 10000 case TARGET_SIG_SETMASK: 10001 how = SIG_SETMASK; 10002 break; 10003 default: 10004 return -TARGET_EINVAL; 10005 } 10006 } else { 10007 how = 0; 10008 set_ptr = NULL; 10009 } 10010 ret = do_sigprocmask(how, set_ptr, &oldset); 10011 if (!is_error(ret) && arg3) { 10012 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 10013 return -TARGET_EFAULT; 10014 host_to_target_old_sigset(p, &oldset); 10015 unlock_user(p, arg3, sizeof(target_sigset_t)); 10016 } 10017 #endif 10018 } 10019 return ret; 10020 #endif 10021 case TARGET_NR_rt_sigprocmask: 10022 { 10023 int how = arg1; 10024 sigset_t set, oldset, *set_ptr; 10025 10026 if (arg4 != sizeof(target_sigset_t)) { 10027 return -TARGET_EINVAL; 10028 } 10029 10030 if (arg2) { 10031 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 10032 if (!p) { 10033 return -TARGET_EFAULT; 10034 } 10035 target_to_host_sigset(&set, p); 10036 unlock_user(p, arg2, 0); 10037 set_ptr = &set; 10038 switch(how) { 10039 case TARGET_SIG_BLOCK: 10040 how = SIG_BLOCK; 10041 break; 10042 case TARGET_SIG_UNBLOCK: 10043 how = SIG_UNBLOCK; 10044 break; 10045 case TARGET_SIG_SETMASK: 10046 how = SIG_SETMASK; 10047 break; 10048 default: 10049 return -TARGET_EINVAL; 10050 } 10051 } else { 10052 how = 0; 10053 set_ptr = NULL; 10054 } 10055 ret = do_sigprocmask(how, set_ptr, &oldset); 10056 if (!is_error(ret) && arg3) { 10057 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 10058 return -TARGET_EFAULT; 10059 host_to_target_sigset(p, &oldset); 10060 unlock_user(p, arg3, sizeof(target_sigset_t)); 10061 } 10062 } 10063 return ret; 10064 #ifdef TARGET_NR_sigpending 10065 case TARGET_NR_sigpending: 10066 { 10067 sigset_t set; 10068 ret = get_errno(sigpending(&set)); 10069 if (!is_error(ret)) { 10070 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 10071 return -TARGET_EFAULT; 10072 host_to_target_old_sigset(p, &set); 10073 unlock_user(p, arg1, sizeof(target_sigset_t)); 10074 } 10075 } 10076 return ret; 10077 #endif 10078 case TARGET_NR_rt_sigpending: 10079 { 10080 sigset_t set; 10081 10082 /* Yes, this check is >, not != like most. We follow the kernel's 10083 * logic and it does it like this because it implements 10084 * NR_sigpending through the same code path, and in that case 10085 * the old_sigset_t is smaller in size. 10086 */ 10087 if (arg2 > sizeof(target_sigset_t)) { 10088 return -TARGET_EINVAL; 10089 } 10090 10091 ret = get_errno(sigpending(&set)); 10092 if (!is_error(ret)) { 10093 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 10094 return -TARGET_EFAULT; 10095 host_to_target_sigset(p, &set); 10096 unlock_user(p, arg1, sizeof(target_sigset_t)); 10097 } 10098 } 10099 return ret; 10100 #ifdef TARGET_NR_sigsuspend 10101 case TARGET_NR_sigsuspend: 10102 { 10103 sigset_t *set; 10104 10105 #if defined(TARGET_ALPHA) 10106 TaskState *ts = cpu->opaque; 10107 /* target_to_host_old_sigset will bswap back */ 10108 abi_ulong mask = tswapal(arg1); 10109 set = &ts->sigsuspend_mask; 10110 target_to_host_old_sigset(set, &mask); 10111 #else 10112 ret = process_sigsuspend_mask(&set, arg1, sizeof(target_sigset_t)); 10113 if (ret != 0) { 10114 return ret; 10115 } 10116 #endif 10117 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 10118 finish_sigsuspend_mask(ret); 10119 } 10120 return ret; 10121 #endif 10122 case TARGET_NR_rt_sigsuspend: 10123 { 10124 sigset_t *set; 10125 10126 ret = process_sigsuspend_mask(&set, arg1, arg2); 10127 if (ret != 0) { 10128 return ret; 10129 } 10130 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 10131 finish_sigsuspend_mask(ret); 10132 } 10133 return ret; 10134 #ifdef TARGET_NR_rt_sigtimedwait 10135 case TARGET_NR_rt_sigtimedwait: 10136 { 10137 sigset_t set; 10138 struct timespec uts, *puts; 10139 siginfo_t uinfo; 10140 10141 if (arg4 != sizeof(target_sigset_t)) { 10142 return -TARGET_EINVAL; 10143 } 10144 10145 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 10146 return -TARGET_EFAULT; 10147 target_to_host_sigset(&set, p); 10148 unlock_user(p, arg1, 0); 10149 if (arg3) { 10150 puts = &uts; 10151 if (target_to_host_timespec(puts, arg3)) { 10152 return -TARGET_EFAULT; 10153 } 10154 } else { 10155 puts = NULL; 10156 } 10157 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 10158 SIGSET_T_SIZE)); 10159 if (!is_error(ret)) { 10160 if (arg2) { 10161 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 10162 0); 10163 if (!p) { 10164 return -TARGET_EFAULT; 10165 } 10166 host_to_target_siginfo(p, &uinfo); 10167 unlock_user(p, arg2, sizeof(target_siginfo_t)); 10168 } 10169 ret = host_to_target_signal(ret); 10170 } 10171 } 10172 return ret; 10173 #endif 10174 #ifdef TARGET_NR_rt_sigtimedwait_time64 10175 case TARGET_NR_rt_sigtimedwait_time64: 10176 { 10177 sigset_t set; 10178 struct timespec uts, *puts; 10179 siginfo_t uinfo; 10180 10181 if (arg4 != sizeof(target_sigset_t)) { 10182 return -TARGET_EINVAL; 10183 } 10184 10185 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 10186 if (!p) { 10187 return -TARGET_EFAULT; 10188 } 10189 target_to_host_sigset(&set, p); 10190 unlock_user(p, arg1, 0); 10191 if (arg3) { 10192 puts = &uts; 10193 if (target_to_host_timespec64(puts, arg3)) { 10194 return -TARGET_EFAULT; 10195 } 10196 } else { 10197 puts = NULL; 10198 } 10199 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 10200 SIGSET_T_SIZE)); 10201 if (!is_error(ret)) { 10202 if (arg2) { 10203 p = lock_user(VERIFY_WRITE, arg2, 10204 sizeof(target_siginfo_t), 0); 10205 if (!p) { 10206 return -TARGET_EFAULT; 10207 } 10208 host_to_target_siginfo(p, &uinfo); 10209 unlock_user(p, arg2, sizeof(target_siginfo_t)); 10210 } 10211 ret = host_to_target_signal(ret); 10212 } 10213 } 10214 return ret; 10215 #endif 10216 case TARGET_NR_rt_sigqueueinfo: 10217 { 10218 siginfo_t uinfo; 10219 10220 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 10221 if (!p) { 10222 return -TARGET_EFAULT; 10223 } 10224 target_to_host_siginfo(&uinfo, p); 10225 unlock_user(p, arg3, 0); 10226 ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo)); 10227 } 10228 return ret; 10229 case TARGET_NR_rt_tgsigqueueinfo: 10230 { 10231 siginfo_t uinfo; 10232 10233 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 10234 if (!p) { 10235 return -TARGET_EFAULT; 10236 } 10237 target_to_host_siginfo(&uinfo, p); 10238 unlock_user(p, arg4, 0); 10239 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo)); 10240 } 10241 return ret; 10242 #ifdef TARGET_NR_sigreturn 10243 case TARGET_NR_sigreturn: 10244 if (block_signals()) { 10245 return -QEMU_ERESTARTSYS; 10246 } 10247 return do_sigreturn(cpu_env); 10248 #endif 10249 case TARGET_NR_rt_sigreturn: 10250 if (block_signals()) { 10251 return -QEMU_ERESTARTSYS; 10252 } 10253 return do_rt_sigreturn(cpu_env); 10254 case TARGET_NR_sethostname: 10255 if (!(p = lock_user_string(arg1))) 10256 return -TARGET_EFAULT; 10257 ret = get_errno(sethostname(p, arg2)); 10258 unlock_user(p, arg1, 0); 10259 return ret; 10260 #ifdef TARGET_NR_setrlimit 10261 case TARGET_NR_setrlimit: 10262 { 10263 int resource = target_to_host_resource(arg1); 10264 struct target_rlimit *target_rlim; 10265 struct rlimit rlim; 10266 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 10267 return -TARGET_EFAULT; 10268 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 10269 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 10270 unlock_user_struct(target_rlim, arg2, 0); 10271 /* 10272 * If we just passed through resource limit settings for memory then 10273 * they would also apply to QEMU's own allocations, and QEMU will 10274 * crash or hang or die if its allocations fail. Ideally we would 10275 * track the guest allocations in QEMU and apply the limits ourselves. 10276 * For now, just tell the guest the call succeeded but don't actually 10277 * limit anything. 10278 */ 10279 if (resource != RLIMIT_AS && 10280 resource != RLIMIT_DATA && 10281 resource != RLIMIT_STACK) { 10282 return get_errno(setrlimit(resource, &rlim)); 10283 } else { 10284 return 0; 10285 } 10286 } 10287 #endif 10288 #ifdef TARGET_NR_getrlimit 10289 case TARGET_NR_getrlimit: 10290 { 10291 int resource = target_to_host_resource(arg1); 10292 struct target_rlimit *target_rlim; 10293 struct rlimit rlim; 10294 10295 ret = get_errno(getrlimit(resource, &rlim)); 10296 if (!is_error(ret)) { 10297 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 10298 return -TARGET_EFAULT; 10299 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 10300 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 10301 unlock_user_struct(target_rlim, arg2, 1); 10302 } 10303 } 10304 return ret; 10305 #endif 10306 case TARGET_NR_getrusage: 10307 { 10308 struct rusage rusage; 10309 ret = get_errno(getrusage(arg1, &rusage)); 10310 if (!is_error(ret)) { 10311 ret = host_to_target_rusage(arg2, &rusage); 10312 } 10313 } 10314 return ret; 10315 #if defined(TARGET_NR_gettimeofday) 10316 case TARGET_NR_gettimeofday: 10317 { 10318 struct timeval tv; 10319 struct timezone tz; 10320 10321 ret = get_errno(gettimeofday(&tv, &tz)); 10322 if (!is_error(ret)) { 10323 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 10324 return -TARGET_EFAULT; 10325 } 10326 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 10327 return -TARGET_EFAULT; 10328 } 10329 } 10330 } 10331 return ret; 10332 #endif 10333 #if defined(TARGET_NR_settimeofday) 10334 case TARGET_NR_settimeofday: 10335 { 10336 struct timeval tv, *ptv = NULL; 10337 struct timezone tz, *ptz = NULL; 10338 10339 if (arg1) { 10340 if (copy_from_user_timeval(&tv, arg1)) { 10341 return -TARGET_EFAULT; 10342 } 10343 ptv = &tv; 10344 } 10345 10346 if (arg2) { 10347 if (copy_from_user_timezone(&tz, arg2)) { 10348 return -TARGET_EFAULT; 10349 } 10350 ptz = &tz; 10351 } 10352 10353 return get_errno(settimeofday(ptv, ptz)); 10354 } 10355 #endif 10356 #if defined(TARGET_NR_select) 10357 case TARGET_NR_select: 10358 #if defined(TARGET_WANT_NI_OLD_SELECT) 10359 /* some architectures used to have old_select here 10360 * but now ENOSYS it. 10361 */ 10362 ret = -TARGET_ENOSYS; 10363 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 10364 ret = do_old_select(arg1); 10365 #else 10366 ret = do_select(arg1, arg2, arg3, arg4, arg5); 10367 #endif 10368 return ret; 10369 #endif 10370 #ifdef TARGET_NR_pselect6 10371 case TARGET_NR_pselect6: 10372 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 10373 #endif 10374 #ifdef TARGET_NR_pselect6_time64 10375 case TARGET_NR_pselect6_time64: 10376 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 10377 #endif 10378 #ifdef TARGET_NR_symlink 10379 case TARGET_NR_symlink: 10380 { 10381 void *p2; 10382 p = lock_user_string(arg1); 10383 p2 = lock_user_string(arg2); 10384 if (!p || !p2) 10385 ret = -TARGET_EFAULT; 10386 else 10387 ret = get_errno(symlink(p, p2)); 10388 unlock_user(p2, arg2, 0); 10389 unlock_user(p, arg1, 0); 10390 } 10391 return ret; 10392 #endif 10393 #if defined(TARGET_NR_symlinkat) 10394 case TARGET_NR_symlinkat: 10395 { 10396 void *p2; 10397 p = lock_user_string(arg1); 10398 p2 = lock_user_string(arg3); 10399 if (!p || !p2) 10400 ret = -TARGET_EFAULT; 10401 else 10402 ret = get_errno(symlinkat(p, arg2, p2)); 10403 unlock_user(p2, arg3, 0); 10404 unlock_user(p, arg1, 0); 10405 } 10406 return ret; 10407 #endif 10408 #ifdef TARGET_NR_readlink 10409 case TARGET_NR_readlink: 10410 { 10411 void *p2; 10412 p = lock_user_string(arg1); 10413 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10414 ret = get_errno(do_guest_readlink(p, p2, arg3)); 10415 unlock_user(p2, arg2, ret); 10416 unlock_user(p, arg1, 0); 10417 } 10418 return ret; 10419 #endif 10420 #if defined(TARGET_NR_readlinkat) 10421 case TARGET_NR_readlinkat: 10422 { 10423 void *p2; 10424 p = lock_user_string(arg2); 10425 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 10426 if (!p || !p2) { 10427 ret = -TARGET_EFAULT; 10428 } else if (!arg4) { 10429 /* Short circuit this for the magic exe check. */ 10430 ret = -TARGET_EINVAL; 10431 } else if (is_proc_myself((const char *)p, "exe")) { 10432 /* 10433 * Don't worry about sign mismatch as earlier mapping 10434 * logic would have thrown a bad address error. 10435 */ 10436 ret = MIN(strlen(exec_path), arg4); 10437 /* We cannot NUL terminate the string. */ 10438 memcpy(p2, exec_path, ret); 10439 } else { 10440 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 10441 } 10442 unlock_user(p2, arg3, ret); 10443 unlock_user(p, arg2, 0); 10444 } 10445 return ret; 10446 #endif 10447 #ifdef TARGET_NR_swapon 10448 case TARGET_NR_swapon: 10449 if (!(p = lock_user_string(arg1))) 10450 return -TARGET_EFAULT; 10451 ret = get_errno(swapon(p, arg2)); 10452 unlock_user(p, arg1, 0); 10453 return ret; 10454 #endif 10455 case TARGET_NR_reboot: 10456 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 10457 /* arg4 must be ignored in all other cases */ 10458 p = lock_user_string(arg4); 10459 if (!p) { 10460 return -TARGET_EFAULT; 10461 } 10462 ret = get_errno(reboot(arg1, arg2, arg3, p)); 10463 unlock_user(p, arg4, 0); 10464 } else { 10465 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 10466 } 10467 return ret; 10468 #ifdef TARGET_NR_mmap 10469 case TARGET_NR_mmap: 10470 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 10471 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 10472 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 10473 || defined(TARGET_S390X) 10474 { 10475 abi_ulong *v; 10476 abi_ulong v1, v2, v3, v4, v5, v6; 10477 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 10478 return -TARGET_EFAULT; 10479 v1 = tswapal(v[0]); 10480 v2 = tswapal(v[1]); 10481 v3 = tswapal(v[2]); 10482 v4 = tswapal(v[3]); 10483 v5 = tswapal(v[4]); 10484 v6 = tswapal(v[5]); 10485 unlock_user(v, arg1, 0); 10486 return do_mmap(v1, v2, v3, v4, v5, v6); 10487 } 10488 #else 10489 /* mmap pointers are always untagged */ 10490 return do_mmap(arg1, arg2, arg3, arg4, arg5, arg6); 10491 #endif 10492 #endif 10493 #ifdef TARGET_NR_mmap2 10494 case TARGET_NR_mmap2: 10495 #ifndef MMAP_SHIFT 10496 #define MMAP_SHIFT 12 10497 #endif 10498 return do_mmap(arg1, arg2, arg3, arg4, arg5, 10499 (off_t)(abi_ulong)arg6 << MMAP_SHIFT); 10500 #endif 10501 case TARGET_NR_munmap: 10502 arg1 = cpu_untagged_addr(cpu, arg1); 10503 return get_errno(target_munmap(arg1, arg2)); 10504 case TARGET_NR_mprotect: 10505 arg1 = cpu_untagged_addr(cpu, arg1); 10506 { 10507 TaskState *ts = cpu->opaque; 10508 /* Special hack to detect libc making the stack executable. */ 10509 if ((arg3 & PROT_GROWSDOWN) 10510 && arg1 >= ts->info->stack_limit 10511 && arg1 <= ts->info->start_stack) { 10512 arg3 &= ~PROT_GROWSDOWN; 10513 arg2 = arg2 + arg1 - ts->info->stack_limit; 10514 arg1 = ts->info->stack_limit; 10515 } 10516 } 10517 return get_errno(target_mprotect(arg1, arg2, arg3)); 10518 #ifdef TARGET_NR_mremap 10519 case TARGET_NR_mremap: 10520 arg1 = cpu_untagged_addr(cpu, arg1); 10521 /* mremap new_addr (arg5) is always untagged */ 10522 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 10523 #endif 10524 /* ??? msync/mlock/munlock are broken for softmmu. */ 10525 #ifdef TARGET_NR_msync 10526 case TARGET_NR_msync: 10527 return get_errno(msync(g2h(cpu, arg1), arg2, 10528 target_to_host_msync_arg(arg3))); 10529 #endif 10530 #ifdef TARGET_NR_mlock 10531 case TARGET_NR_mlock: 10532 return get_errno(mlock(g2h(cpu, arg1), arg2)); 10533 #endif 10534 #ifdef TARGET_NR_munlock 10535 case TARGET_NR_munlock: 10536 return get_errno(munlock(g2h(cpu, arg1), arg2)); 10537 #endif 10538 #ifdef TARGET_NR_mlockall 10539 case TARGET_NR_mlockall: 10540 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 10541 #endif 10542 #ifdef TARGET_NR_munlockall 10543 case TARGET_NR_munlockall: 10544 return get_errno(munlockall()); 10545 #endif 10546 #ifdef TARGET_NR_truncate 10547 case TARGET_NR_truncate: 10548 if (!(p = lock_user_string(arg1))) 10549 return -TARGET_EFAULT; 10550 ret = get_errno(truncate(p, arg2)); 10551 unlock_user(p, arg1, 0); 10552 return ret; 10553 #endif 10554 #ifdef TARGET_NR_ftruncate 10555 case TARGET_NR_ftruncate: 10556 return get_errno(ftruncate(arg1, arg2)); 10557 #endif 10558 case TARGET_NR_fchmod: 10559 return get_errno(fchmod(arg1, arg2)); 10560 #if defined(TARGET_NR_fchmodat) 10561 case TARGET_NR_fchmodat: 10562 if (!(p = lock_user_string(arg2))) 10563 return -TARGET_EFAULT; 10564 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 10565 unlock_user(p, arg2, 0); 10566 return ret; 10567 #endif 10568 case TARGET_NR_getpriority: 10569 /* Note that negative values are valid for getpriority, so we must 10570 differentiate based on errno settings. */ 10571 errno = 0; 10572 ret = getpriority(arg1, arg2); 10573 if (ret == -1 && errno != 0) { 10574 return -host_to_target_errno(errno); 10575 } 10576 #ifdef TARGET_ALPHA 10577 /* Return value is the unbiased priority. Signal no error. */ 10578 cpu_env->ir[IR_V0] = 0; 10579 #else 10580 /* Return value is a biased priority to avoid negative numbers. */ 10581 ret = 20 - ret; 10582 #endif 10583 return ret; 10584 case TARGET_NR_setpriority: 10585 return get_errno(setpriority(arg1, arg2, arg3)); 10586 #ifdef TARGET_NR_statfs 10587 case TARGET_NR_statfs: 10588 if (!(p = lock_user_string(arg1))) { 10589 return -TARGET_EFAULT; 10590 } 10591 ret = get_errno(statfs(path(p), &stfs)); 10592 unlock_user(p, arg1, 0); 10593 convert_statfs: 10594 if (!is_error(ret)) { 10595 struct target_statfs *target_stfs; 10596 10597 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 10598 return -TARGET_EFAULT; 10599 __put_user(stfs.f_type, &target_stfs->f_type); 10600 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10601 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10602 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10603 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10604 __put_user(stfs.f_files, &target_stfs->f_files); 10605 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10606 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10607 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10608 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10609 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10610 #ifdef _STATFS_F_FLAGS 10611 __put_user(stfs.f_flags, &target_stfs->f_flags); 10612 #else 10613 __put_user(0, &target_stfs->f_flags); 10614 #endif 10615 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10616 unlock_user_struct(target_stfs, arg2, 1); 10617 } 10618 return ret; 10619 #endif 10620 #ifdef TARGET_NR_fstatfs 10621 case TARGET_NR_fstatfs: 10622 ret = get_errno(fstatfs(arg1, &stfs)); 10623 goto convert_statfs; 10624 #endif 10625 #ifdef TARGET_NR_statfs64 10626 case TARGET_NR_statfs64: 10627 if (!(p = lock_user_string(arg1))) { 10628 return -TARGET_EFAULT; 10629 } 10630 ret = get_errno(statfs(path(p), &stfs)); 10631 unlock_user(p, arg1, 0); 10632 convert_statfs64: 10633 if (!is_error(ret)) { 10634 struct target_statfs64 *target_stfs; 10635 10636 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 10637 return -TARGET_EFAULT; 10638 __put_user(stfs.f_type, &target_stfs->f_type); 10639 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10640 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10641 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10642 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10643 __put_user(stfs.f_files, &target_stfs->f_files); 10644 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10645 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10646 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10647 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10648 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10649 #ifdef _STATFS_F_FLAGS 10650 __put_user(stfs.f_flags, &target_stfs->f_flags); 10651 #else 10652 __put_user(0, &target_stfs->f_flags); 10653 #endif 10654 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10655 unlock_user_struct(target_stfs, arg3, 1); 10656 } 10657 return ret; 10658 case TARGET_NR_fstatfs64: 10659 ret = get_errno(fstatfs(arg1, &stfs)); 10660 goto convert_statfs64; 10661 #endif 10662 #ifdef TARGET_NR_socketcall 10663 case TARGET_NR_socketcall: 10664 return do_socketcall(arg1, arg2); 10665 #endif 10666 #ifdef TARGET_NR_accept 10667 case TARGET_NR_accept: 10668 return do_accept4(arg1, arg2, arg3, 0); 10669 #endif 10670 #ifdef TARGET_NR_accept4 10671 case TARGET_NR_accept4: 10672 return do_accept4(arg1, arg2, arg3, arg4); 10673 #endif 10674 #ifdef TARGET_NR_bind 10675 case TARGET_NR_bind: 10676 return do_bind(arg1, arg2, arg3); 10677 #endif 10678 #ifdef TARGET_NR_connect 10679 case TARGET_NR_connect: 10680 return do_connect(arg1, arg2, arg3); 10681 #endif 10682 #ifdef TARGET_NR_getpeername 10683 case TARGET_NR_getpeername: 10684 return do_getpeername(arg1, arg2, arg3); 10685 #endif 10686 #ifdef TARGET_NR_getsockname 10687 case TARGET_NR_getsockname: 10688 return do_getsockname(arg1, arg2, arg3); 10689 #endif 10690 #ifdef TARGET_NR_getsockopt 10691 case TARGET_NR_getsockopt: 10692 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 10693 #endif 10694 #ifdef TARGET_NR_listen 10695 case TARGET_NR_listen: 10696 return get_errno(listen(arg1, arg2)); 10697 #endif 10698 #ifdef TARGET_NR_recv 10699 case TARGET_NR_recv: 10700 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 10701 #endif 10702 #ifdef TARGET_NR_recvfrom 10703 case TARGET_NR_recvfrom: 10704 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 10705 #endif 10706 #ifdef TARGET_NR_recvmsg 10707 case TARGET_NR_recvmsg: 10708 return do_sendrecvmsg(arg1, arg2, arg3, 0); 10709 #endif 10710 #ifdef TARGET_NR_send 10711 case TARGET_NR_send: 10712 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 10713 #endif 10714 #ifdef TARGET_NR_sendmsg 10715 case TARGET_NR_sendmsg: 10716 return do_sendrecvmsg(arg1, arg2, arg3, 1); 10717 #endif 10718 #ifdef TARGET_NR_sendmmsg 10719 case TARGET_NR_sendmmsg: 10720 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 10721 #endif 10722 #ifdef TARGET_NR_recvmmsg 10723 case TARGET_NR_recvmmsg: 10724 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 10725 #endif 10726 #ifdef TARGET_NR_sendto 10727 case TARGET_NR_sendto: 10728 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 10729 #endif 10730 #ifdef TARGET_NR_shutdown 10731 case TARGET_NR_shutdown: 10732 return get_errno(shutdown(arg1, arg2)); 10733 #endif 10734 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 10735 case TARGET_NR_getrandom: 10736 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 10737 if (!p) { 10738 return -TARGET_EFAULT; 10739 } 10740 ret = get_errno(getrandom(p, arg2, arg3)); 10741 unlock_user(p, arg1, ret); 10742 return ret; 10743 #endif 10744 #ifdef TARGET_NR_socket 10745 case TARGET_NR_socket: 10746 return do_socket(arg1, arg2, arg3); 10747 #endif 10748 #ifdef TARGET_NR_socketpair 10749 case TARGET_NR_socketpair: 10750 return do_socketpair(arg1, arg2, arg3, arg4); 10751 #endif 10752 #ifdef TARGET_NR_setsockopt 10753 case TARGET_NR_setsockopt: 10754 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 10755 #endif 10756 #if defined(TARGET_NR_syslog) 10757 case TARGET_NR_syslog: 10758 { 10759 int len = arg2; 10760 10761 switch (arg1) { 10762 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 10763 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 10764 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 10765 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 10766 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 10767 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 10768 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 10769 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 10770 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 10771 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 10772 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 10773 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 10774 { 10775 if (len < 0) { 10776 return -TARGET_EINVAL; 10777 } 10778 if (len == 0) { 10779 return 0; 10780 } 10781 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10782 if (!p) { 10783 return -TARGET_EFAULT; 10784 } 10785 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 10786 unlock_user(p, arg2, arg3); 10787 } 10788 return ret; 10789 default: 10790 return -TARGET_EINVAL; 10791 } 10792 } 10793 break; 10794 #endif 10795 case TARGET_NR_setitimer: 10796 { 10797 struct itimerval value, ovalue, *pvalue; 10798 10799 if (arg2) { 10800 pvalue = &value; 10801 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 10802 || copy_from_user_timeval(&pvalue->it_value, 10803 arg2 + sizeof(struct target_timeval))) 10804 return -TARGET_EFAULT; 10805 } else { 10806 pvalue = NULL; 10807 } 10808 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 10809 if (!is_error(ret) && arg3) { 10810 if (copy_to_user_timeval(arg3, 10811 &ovalue.it_interval) 10812 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10813 &ovalue.it_value)) 10814 return -TARGET_EFAULT; 10815 } 10816 } 10817 return ret; 10818 case TARGET_NR_getitimer: 10819 { 10820 struct itimerval value; 10821 10822 ret = get_errno(getitimer(arg1, &value)); 10823 if (!is_error(ret) && arg2) { 10824 if (copy_to_user_timeval(arg2, 10825 &value.it_interval) 10826 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10827 &value.it_value)) 10828 return -TARGET_EFAULT; 10829 } 10830 } 10831 return ret; 10832 #ifdef TARGET_NR_stat 10833 case TARGET_NR_stat: 10834 if (!(p = lock_user_string(arg1))) { 10835 return -TARGET_EFAULT; 10836 } 10837 ret = get_errno(stat(path(p), &st)); 10838 unlock_user(p, arg1, 0); 10839 goto do_stat; 10840 #endif 10841 #ifdef TARGET_NR_lstat 10842 case TARGET_NR_lstat: 10843 if (!(p = lock_user_string(arg1))) { 10844 return -TARGET_EFAULT; 10845 } 10846 ret = get_errno(lstat(path(p), &st)); 10847 unlock_user(p, arg1, 0); 10848 goto do_stat; 10849 #endif 10850 #ifdef TARGET_NR_fstat 10851 case TARGET_NR_fstat: 10852 { 10853 ret = get_errno(fstat(arg1, &st)); 10854 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10855 do_stat: 10856 #endif 10857 if (!is_error(ret)) { 10858 struct target_stat *target_st; 10859 10860 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10861 return -TARGET_EFAULT; 10862 memset(target_st, 0, sizeof(*target_st)); 10863 __put_user(st.st_dev, &target_st->st_dev); 10864 __put_user(st.st_ino, &target_st->st_ino); 10865 __put_user(st.st_mode, &target_st->st_mode); 10866 __put_user(st.st_uid, &target_st->st_uid); 10867 __put_user(st.st_gid, &target_st->st_gid); 10868 __put_user(st.st_nlink, &target_st->st_nlink); 10869 __put_user(st.st_rdev, &target_st->st_rdev); 10870 __put_user(st.st_size, &target_st->st_size); 10871 __put_user(st.st_blksize, &target_st->st_blksize); 10872 __put_user(st.st_blocks, &target_st->st_blocks); 10873 __put_user(st.st_atime, &target_st->target_st_atime); 10874 __put_user(st.st_mtime, &target_st->target_st_mtime); 10875 __put_user(st.st_ctime, &target_st->target_st_ctime); 10876 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC) 10877 __put_user(st.st_atim.tv_nsec, 10878 &target_st->target_st_atime_nsec); 10879 __put_user(st.st_mtim.tv_nsec, 10880 &target_st->target_st_mtime_nsec); 10881 __put_user(st.st_ctim.tv_nsec, 10882 &target_st->target_st_ctime_nsec); 10883 #endif 10884 unlock_user_struct(target_st, arg2, 1); 10885 } 10886 } 10887 return ret; 10888 #endif 10889 case TARGET_NR_vhangup: 10890 return get_errno(vhangup()); 10891 #ifdef TARGET_NR_syscall 10892 case TARGET_NR_syscall: 10893 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10894 arg6, arg7, arg8, 0); 10895 #endif 10896 #if defined(TARGET_NR_wait4) 10897 case TARGET_NR_wait4: 10898 { 10899 int status; 10900 abi_long status_ptr = arg2; 10901 struct rusage rusage, *rusage_ptr; 10902 abi_ulong target_rusage = arg4; 10903 abi_long rusage_err; 10904 if (target_rusage) 10905 rusage_ptr = &rusage; 10906 else 10907 rusage_ptr = NULL; 10908 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10909 if (!is_error(ret)) { 10910 if (status_ptr && ret) { 10911 status = host_to_target_waitstatus(status); 10912 if (put_user_s32(status, status_ptr)) 10913 return -TARGET_EFAULT; 10914 } 10915 if (target_rusage) { 10916 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10917 if (rusage_err) { 10918 ret = rusage_err; 10919 } 10920 } 10921 } 10922 } 10923 return ret; 10924 #endif 10925 #ifdef TARGET_NR_swapoff 10926 case TARGET_NR_swapoff: 10927 if (!(p = lock_user_string(arg1))) 10928 return -TARGET_EFAULT; 10929 ret = get_errno(swapoff(p)); 10930 unlock_user(p, arg1, 0); 10931 return ret; 10932 #endif 10933 case TARGET_NR_sysinfo: 10934 { 10935 struct target_sysinfo *target_value; 10936 struct sysinfo value; 10937 ret = get_errno(sysinfo(&value)); 10938 if (!is_error(ret) && arg1) 10939 { 10940 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10941 return -TARGET_EFAULT; 10942 __put_user(value.uptime, &target_value->uptime); 10943 __put_user(value.loads[0], &target_value->loads[0]); 10944 __put_user(value.loads[1], &target_value->loads[1]); 10945 __put_user(value.loads[2], &target_value->loads[2]); 10946 __put_user(value.totalram, &target_value->totalram); 10947 __put_user(value.freeram, &target_value->freeram); 10948 __put_user(value.sharedram, &target_value->sharedram); 10949 __put_user(value.bufferram, &target_value->bufferram); 10950 __put_user(value.totalswap, &target_value->totalswap); 10951 __put_user(value.freeswap, &target_value->freeswap); 10952 __put_user(value.procs, &target_value->procs); 10953 __put_user(value.totalhigh, &target_value->totalhigh); 10954 __put_user(value.freehigh, &target_value->freehigh); 10955 __put_user(value.mem_unit, &target_value->mem_unit); 10956 unlock_user_struct(target_value, arg1, 1); 10957 } 10958 } 10959 return ret; 10960 #ifdef TARGET_NR_ipc 10961 case TARGET_NR_ipc: 10962 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10963 #endif 10964 #ifdef TARGET_NR_semget 10965 case TARGET_NR_semget: 10966 return get_errno(semget(arg1, arg2, arg3)); 10967 #endif 10968 #ifdef TARGET_NR_semop 10969 case TARGET_NR_semop: 10970 return do_semtimedop(arg1, arg2, arg3, 0, false); 10971 #endif 10972 #ifdef TARGET_NR_semtimedop 10973 case TARGET_NR_semtimedop: 10974 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10975 #endif 10976 #ifdef TARGET_NR_semtimedop_time64 10977 case TARGET_NR_semtimedop_time64: 10978 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10979 #endif 10980 #ifdef TARGET_NR_semctl 10981 case TARGET_NR_semctl: 10982 return do_semctl(arg1, arg2, arg3, arg4); 10983 #endif 10984 #ifdef TARGET_NR_msgctl 10985 case TARGET_NR_msgctl: 10986 return do_msgctl(arg1, arg2, arg3); 10987 #endif 10988 #ifdef TARGET_NR_msgget 10989 case TARGET_NR_msgget: 10990 return get_errno(msgget(arg1, arg2)); 10991 #endif 10992 #ifdef TARGET_NR_msgrcv 10993 case TARGET_NR_msgrcv: 10994 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10995 #endif 10996 #ifdef TARGET_NR_msgsnd 10997 case TARGET_NR_msgsnd: 10998 return do_msgsnd(arg1, arg2, arg3, arg4); 10999 #endif 11000 #ifdef TARGET_NR_shmget 11001 case TARGET_NR_shmget: 11002 return get_errno(shmget(arg1, arg2, arg3)); 11003 #endif 11004 #ifdef TARGET_NR_shmctl 11005 case TARGET_NR_shmctl: 11006 return do_shmctl(arg1, arg2, arg3); 11007 #endif 11008 #ifdef TARGET_NR_shmat 11009 case TARGET_NR_shmat: 11010 return do_shmat(cpu_env, arg1, arg2, arg3); 11011 #endif 11012 #ifdef TARGET_NR_shmdt 11013 case TARGET_NR_shmdt: 11014 return do_shmdt(arg1); 11015 #endif 11016 case TARGET_NR_fsync: 11017 return get_errno(fsync(arg1)); 11018 case TARGET_NR_clone: 11019 /* Linux manages to have three different orderings for its 11020 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 11021 * match the kernel's CONFIG_CLONE_* settings. 11022 * Microblaze is further special in that it uses a sixth 11023 * implicit argument to clone for the TLS pointer. 11024 */ 11025 #if defined(TARGET_MICROBLAZE) 11026 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 11027 #elif defined(TARGET_CLONE_BACKWARDS) 11028 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 11029 #elif defined(TARGET_CLONE_BACKWARDS2) 11030 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 11031 #else 11032 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 11033 #endif 11034 return ret; 11035 #ifdef __NR_exit_group 11036 /* new thread calls */ 11037 case TARGET_NR_exit_group: 11038 preexit_cleanup(cpu_env, arg1); 11039 return get_errno(exit_group(arg1)); 11040 #endif 11041 case TARGET_NR_setdomainname: 11042 if (!(p = lock_user_string(arg1))) 11043 return -TARGET_EFAULT; 11044 ret = get_errno(setdomainname(p, arg2)); 11045 unlock_user(p, arg1, 0); 11046 return ret; 11047 case TARGET_NR_uname: 11048 /* no need to transcode because we use the linux syscall */ 11049 { 11050 struct new_utsname * buf; 11051 11052 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 11053 return -TARGET_EFAULT; 11054 ret = get_errno(sys_uname(buf)); 11055 if (!is_error(ret)) { 11056 /* Overwrite the native machine name with whatever is being 11057 emulated. */ 11058 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 11059 sizeof(buf->machine)); 11060 /* Allow the user to override the reported release. */ 11061 if (qemu_uname_release && *qemu_uname_release) { 11062 g_strlcpy(buf->release, qemu_uname_release, 11063 sizeof(buf->release)); 11064 } 11065 } 11066 unlock_user_struct(buf, arg1, 1); 11067 } 11068 return ret; 11069 #ifdef TARGET_I386 11070 case TARGET_NR_modify_ldt: 11071 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 11072 #if !defined(TARGET_X86_64) 11073 case TARGET_NR_vm86: 11074 return do_vm86(cpu_env, arg1, arg2); 11075 #endif 11076 #endif 11077 #if defined(TARGET_NR_adjtimex) 11078 case TARGET_NR_adjtimex: 11079 { 11080 struct timex host_buf; 11081 11082 if (target_to_host_timex(&host_buf, arg1) != 0) { 11083 return -TARGET_EFAULT; 11084 } 11085 ret = get_errno(adjtimex(&host_buf)); 11086 if (!is_error(ret)) { 11087 if (host_to_target_timex(arg1, &host_buf) != 0) { 11088 return -TARGET_EFAULT; 11089 } 11090 } 11091 } 11092 return ret; 11093 #endif 11094 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 11095 case TARGET_NR_clock_adjtime: 11096 { 11097 struct timex htx; 11098 11099 if (target_to_host_timex(&htx, arg2) != 0) { 11100 return -TARGET_EFAULT; 11101 } 11102 ret = get_errno(clock_adjtime(arg1, &htx)); 11103 if (!is_error(ret) && host_to_target_timex(arg2, &htx)) { 11104 return -TARGET_EFAULT; 11105 } 11106 } 11107 return ret; 11108 #endif 11109 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 11110 case TARGET_NR_clock_adjtime64: 11111 { 11112 struct timex htx; 11113 11114 if (target_to_host_timex64(&htx, arg2) != 0) { 11115 return -TARGET_EFAULT; 11116 } 11117 ret = get_errno(clock_adjtime(arg1, &htx)); 11118 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 11119 return -TARGET_EFAULT; 11120 } 11121 } 11122 return ret; 11123 #endif 11124 case TARGET_NR_getpgid: 11125 return get_errno(getpgid(arg1)); 11126 case TARGET_NR_fchdir: 11127 return get_errno(fchdir(arg1)); 11128 case TARGET_NR_personality: 11129 return get_errno(personality(arg1)); 11130 #ifdef TARGET_NR__llseek /* Not on alpha */ 11131 case TARGET_NR__llseek: 11132 { 11133 int64_t res; 11134 #if !defined(__NR_llseek) 11135 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 11136 if (res == -1) { 11137 ret = get_errno(res); 11138 } else { 11139 ret = 0; 11140 } 11141 #else 11142 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 11143 #endif 11144 if ((ret == 0) && put_user_s64(res, arg4)) { 11145 return -TARGET_EFAULT; 11146 } 11147 } 11148 return ret; 11149 #endif 11150 #ifdef TARGET_NR_getdents 11151 case TARGET_NR_getdents: 11152 return do_getdents(arg1, arg2, arg3); 11153 #endif /* TARGET_NR_getdents */ 11154 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 11155 case TARGET_NR_getdents64: 11156 return do_getdents64(arg1, arg2, arg3); 11157 #endif /* TARGET_NR_getdents64 */ 11158 #if defined(TARGET_NR__newselect) 11159 case TARGET_NR__newselect: 11160 return do_select(arg1, arg2, arg3, arg4, arg5); 11161 #endif 11162 #ifdef TARGET_NR_poll 11163 case TARGET_NR_poll: 11164 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 11165 #endif 11166 #ifdef TARGET_NR_ppoll 11167 case TARGET_NR_ppoll: 11168 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 11169 #endif 11170 #ifdef TARGET_NR_ppoll_time64 11171 case TARGET_NR_ppoll_time64: 11172 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 11173 #endif 11174 case TARGET_NR_flock: 11175 /* NOTE: the flock constant seems to be the same for every 11176 Linux platform */ 11177 return get_errno(safe_flock(arg1, arg2)); 11178 case TARGET_NR_readv: 11179 { 11180 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 11181 if (vec != NULL) { 11182 ret = get_errno(safe_readv(arg1, vec, arg3)); 11183 unlock_iovec(vec, arg2, arg3, 1); 11184 } else { 11185 ret = -host_to_target_errno(errno); 11186 } 11187 } 11188 return ret; 11189 case TARGET_NR_writev: 11190 { 11191 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 11192 if (vec != NULL) { 11193 ret = get_errno(safe_writev(arg1, vec, arg3)); 11194 unlock_iovec(vec, arg2, arg3, 0); 11195 } else { 11196 ret = -host_to_target_errno(errno); 11197 } 11198 } 11199 return ret; 11200 #if defined(TARGET_NR_preadv) 11201 case TARGET_NR_preadv: 11202 { 11203 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 11204 if (vec != NULL) { 11205 unsigned long low, high; 11206 11207 target_to_host_low_high(arg4, arg5, &low, &high); 11208 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 11209 unlock_iovec(vec, arg2, arg3, 1); 11210 } else { 11211 ret = -host_to_target_errno(errno); 11212 } 11213 } 11214 return ret; 11215 #endif 11216 #if defined(TARGET_NR_pwritev) 11217 case TARGET_NR_pwritev: 11218 { 11219 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 11220 if (vec != NULL) { 11221 unsigned long low, high; 11222 11223 target_to_host_low_high(arg4, arg5, &low, &high); 11224 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 11225 unlock_iovec(vec, arg2, arg3, 0); 11226 } else { 11227 ret = -host_to_target_errno(errno); 11228 } 11229 } 11230 return ret; 11231 #endif 11232 case TARGET_NR_getsid: 11233 return get_errno(getsid(arg1)); 11234 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 11235 case TARGET_NR_fdatasync: 11236 return get_errno(fdatasync(arg1)); 11237 #endif 11238 case TARGET_NR_sched_getaffinity: 11239 { 11240 unsigned int mask_size; 11241 unsigned long *mask; 11242 11243 /* 11244 * sched_getaffinity needs multiples of ulong, so need to take 11245 * care of mismatches between target ulong and host ulong sizes. 11246 */ 11247 if (arg2 & (sizeof(abi_ulong) - 1)) { 11248 return -TARGET_EINVAL; 11249 } 11250 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 11251 11252 mask = alloca(mask_size); 11253 memset(mask, 0, mask_size); 11254 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 11255 11256 if (!is_error(ret)) { 11257 if (ret > arg2) { 11258 /* More data returned than the caller's buffer will fit. 11259 * This only happens if sizeof(abi_long) < sizeof(long) 11260 * and the caller passed us a buffer holding an odd number 11261 * of abi_longs. If the host kernel is actually using the 11262 * extra 4 bytes then fail EINVAL; otherwise we can just 11263 * ignore them and only copy the interesting part. 11264 */ 11265 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 11266 if (numcpus > arg2 * 8) { 11267 return -TARGET_EINVAL; 11268 } 11269 ret = arg2; 11270 } 11271 11272 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 11273 return -TARGET_EFAULT; 11274 } 11275 } 11276 } 11277 return ret; 11278 case TARGET_NR_sched_setaffinity: 11279 { 11280 unsigned int mask_size; 11281 unsigned long *mask; 11282 11283 /* 11284 * sched_setaffinity needs multiples of ulong, so need to take 11285 * care of mismatches between target ulong and host ulong sizes. 11286 */ 11287 if (arg2 & (sizeof(abi_ulong) - 1)) { 11288 return -TARGET_EINVAL; 11289 } 11290 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 11291 mask = alloca(mask_size); 11292 11293 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 11294 if (ret) { 11295 return ret; 11296 } 11297 11298 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 11299 } 11300 case TARGET_NR_getcpu: 11301 { 11302 unsigned cpu, node; 11303 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 11304 arg2 ? &node : NULL, 11305 NULL)); 11306 if (is_error(ret)) { 11307 return ret; 11308 } 11309 if (arg1 && put_user_u32(cpu, arg1)) { 11310 return -TARGET_EFAULT; 11311 } 11312 if (arg2 && put_user_u32(node, arg2)) { 11313 return -TARGET_EFAULT; 11314 } 11315 } 11316 return ret; 11317 case TARGET_NR_sched_setparam: 11318 { 11319 struct target_sched_param *target_schp; 11320 struct sched_param schp; 11321 11322 if (arg2 == 0) { 11323 return -TARGET_EINVAL; 11324 } 11325 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) { 11326 return -TARGET_EFAULT; 11327 } 11328 schp.sched_priority = tswap32(target_schp->sched_priority); 11329 unlock_user_struct(target_schp, arg2, 0); 11330 return get_errno(sys_sched_setparam(arg1, &schp)); 11331 } 11332 case TARGET_NR_sched_getparam: 11333 { 11334 struct target_sched_param *target_schp; 11335 struct sched_param schp; 11336 11337 if (arg2 == 0) { 11338 return -TARGET_EINVAL; 11339 } 11340 ret = get_errno(sys_sched_getparam(arg1, &schp)); 11341 if (!is_error(ret)) { 11342 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) { 11343 return -TARGET_EFAULT; 11344 } 11345 target_schp->sched_priority = tswap32(schp.sched_priority); 11346 unlock_user_struct(target_schp, arg2, 1); 11347 } 11348 } 11349 return ret; 11350 case TARGET_NR_sched_setscheduler: 11351 { 11352 struct target_sched_param *target_schp; 11353 struct sched_param schp; 11354 if (arg3 == 0) { 11355 return -TARGET_EINVAL; 11356 } 11357 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) { 11358 return -TARGET_EFAULT; 11359 } 11360 schp.sched_priority = tswap32(target_schp->sched_priority); 11361 unlock_user_struct(target_schp, arg3, 0); 11362 return get_errno(sys_sched_setscheduler(arg1, arg2, &schp)); 11363 } 11364 case TARGET_NR_sched_getscheduler: 11365 return get_errno(sys_sched_getscheduler(arg1)); 11366 case TARGET_NR_sched_getattr: 11367 { 11368 struct target_sched_attr *target_scha; 11369 struct sched_attr scha; 11370 if (arg2 == 0) { 11371 return -TARGET_EINVAL; 11372 } 11373 if (arg3 > sizeof(scha)) { 11374 arg3 = sizeof(scha); 11375 } 11376 ret = get_errno(sys_sched_getattr(arg1, &scha, arg3, arg4)); 11377 if (!is_error(ret)) { 11378 target_scha = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11379 if (!target_scha) { 11380 return -TARGET_EFAULT; 11381 } 11382 target_scha->size = tswap32(scha.size); 11383 target_scha->sched_policy = tswap32(scha.sched_policy); 11384 target_scha->sched_flags = tswap64(scha.sched_flags); 11385 target_scha->sched_nice = tswap32(scha.sched_nice); 11386 target_scha->sched_priority = tswap32(scha.sched_priority); 11387 target_scha->sched_runtime = tswap64(scha.sched_runtime); 11388 target_scha->sched_deadline = tswap64(scha.sched_deadline); 11389 target_scha->sched_period = tswap64(scha.sched_period); 11390 if (scha.size > offsetof(struct sched_attr, sched_util_min)) { 11391 target_scha->sched_util_min = tswap32(scha.sched_util_min); 11392 target_scha->sched_util_max = tswap32(scha.sched_util_max); 11393 } 11394 unlock_user(target_scha, arg2, arg3); 11395 } 11396 return ret; 11397 } 11398 case TARGET_NR_sched_setattr: 11399 { 11400 struct target_sched_attr *target_scha; 11401 struct sched_attr scha; 11402 uint32_t size; 11403 int zeroed; 11404 if (arg2 == 0) { 11405 return -TARGET_EINVAL; 11406 } 11407 if (get_user_u32(size, arg2)) { 11408 return -TARGET_EFAULT; 11409 } 11410 if (!size) { 11411 size = offsetof(struct target_sched_attr, sched_util_min); 11412 } 11413 if (size < offsetof(struct target_sched_attr, sched_util_min)) { 11414 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 11415 return -TARGET_EFAULT; 11416 } 11417 return -TARGET_E2BIG; 11418 } 11419 11420 zeroed = check_zeroed_user(arg2, sizeof(struct target_sched_attr), size); 11421 if (zeroed < 0) { 11422 return zeroed; 11423 } else if (zeroed == 0) { 11424 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 11425 return -TARGET_EFAULT; 11426 } 11427 return -TARGET_E2BIG; 11428 } 11429 if (size > sizeof(struct target_sched_attr)) { 11430 size = sizeof(struct target_sched_attr); 11431 } 11432 11433 target_scha = lock_user(VERIFY_READ, arg2, size, 1); 11434 if (!target_scha) { 11435 return -TARGET_EFAULT; 11436 } 11437 scha.size = size; 11438 scha.sched_policy = tswap32(target_scha->sched_policy); 11439 scha.sched_flags = tswap64(target_scha->sched_flags); 11440 scha.sched_nice = tswap32(target_scha->sched_nice); 11441 scha.sched_priority = tswap32(target_scha->sched_priority); 11442 scha.sched_runtime = tswap64(target_scha->sched_runtime); 11443 scha.sched_deadline = tswap64(target_scha->sched_deadline); 11444 scha.sched_period = tswap64(target_scha->sched_period); 11445 if (size > offsetof(struct target_sched_attr, sched_util_min)) { 11446 scha.sched_util_min = tswap32(target_scha->sched_util_min); 11447 scha.sched_util_max = tswap32(target_scha->sched_util_max); 11448 } 11449 unlock_user(target_scha, arg2, 0); 11450 return get_errno(sys_sched_setattr(arg1, &scha, arg3)); 11451 } 11452 case TARGET_NR_sched_yield: 11453 return get_errno(sched_yield()); 11454 case TARGET_NR_sched_get_priority_max: 11455 return get_errno(sched_get_priority_max(arg1)); 11456 case TARGET_NR_sched_get_priority_min: 11457 return get_errno(sched_get_priority_min(arg1)); 11458 #ifdef TARGET_NR_sched_rr_get_interval 11459 case TARGET_NR_sched_rr_get_interval: 11460 { 11461 struct timespec ts; 11462 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 11463 if (!is_error(ret)) { 11464 ret = host_to_target_timespec(arg2, &ts); 11465 } 11466 } 11467 return ret; 11468 #endif 11469 #ifdef TARGET_NR_sched_rr_get_interval_time64 11470 case TARGET_NR_sched_rr_get_interval_time64: 11471 { 11472 struct timespec ts; 11473 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 11474 if (!is_error(ret)) { 11475 ret = host_to_target_timespec64(arg2, &ts); 11476 } 11477 } 11478 return ret; 11479 #endif 11480 #if defined(TARGET_NR_nanosleep) 11481 case TARGET_NR_nanosleep: 11482 { 11483 struct timespec req, rem; 11484 target_to_host_timespec(&req, arg1); 11485 ret = get_errno(safe_nanosleep(&req, &rem)); 11486 if (is_error(ret) && arg2) { 11487 host_to_target_timespec(arg2, &rem); 11488 } 11489 } 11490 return ret; 11491 #endif 11492 case TARGET_NR_prctl: 11493 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5); 11494 break; 11495 #ifdef TARGET_NR_arch_prctl 11496 case TARGET_NR_arch_prctl: 11497 return do_arch_prctl(cpu_env, arg1, arg2); 11498 #endif 11499 #ifdef TARGET_NR_pread64 11500 case TARGET_NR_pread64: 11501 if (regpairs_aligned(cpu_env, num)) { 11502 arg4 = arg5; 11503 arg5 = arg6; 11504 } 11505 if (arg2 == 0 && arg3 == 0) { 11506 /* Special-case NULL buffer and zero length, which should succeed */ 11507 p = 0; 11508 } else { 11509 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11510 if (!p) { 11511 return -TARGET_EFAULT; 11512 } 11513 } 11514 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 11515 unlock_user(p, arg2, ret); 11516 return ret; 11517 case TARGET_NR_pwrite64: 11518 if (regpairs_aligned(cpu_env, num)) { 11519 arg4 = arg5; 11520 arg5 = arg6; 11521 } 11522 if (arg2 == 0 && arg3 == 0) { 11523 /* Special-case NULL buffer and zero length, which should succeed */ 11524 p = 0; 11525 } else { 11526 p = lock_user(VERIFY_READ, arg2, arg3, 1); 11527 if (!p) { 11528 return -TARGET_EFAULT; 11529 } 11530 } 11531 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 11532 unlock_user(p, arg2, 0); 11533 return ret; 11534 #endif 11535 case TARGET_NR_getcwd: 11536 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 11537 return -TARGET_EFAULT; 11538 ret = get_errno(sys_getcwd1(p, arg2)); 11539 unlock_user(p, arg1, ret); 11540 return ret; 11541 case TARGET_NR_capget: 11542 case TARGET_NR_capset: 11543 { 11544 struct target_user_cap_header *target_header; 11545 struct target_user_cap_data *target_data = NULL; 11546 struct __user_cap_header_struct header; 11547 struct __user_cap_data_struct data[2]; 11548 struct __user_cap_data_struct *dataptr = NULL; 11549 int i, target_datalen; 11550 int data_items = 1; 11551 11552 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 11553 return -TARGET_EFAULT; 11554 } 11555 header.version = tswap32(target_header->version); 11556 header.pid = tswap32(target_header->pid); 11557 11558 if (header.version != _LINUX_CAPABILITY_VERSION) { 11559 /* Version 2 and up takes pointer to two user_data structs */ 11560 data_items = 2; 11561 } 11562 11563 target_datalen = sizeof(*target_data) * data_items; 11564 11565 if (arg2) { 11566 if (num == TARGET_NR_capget) { 11567 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 11568 } else { 11569 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 11570 } 11571 if (!target_data) { 11572 unlock_user_struct(target_header, arg1, 0); 11573 return -TARGET_EFAULT; 11574 } 11575 11576 if (num == TARGET_NR_capset) { 11577 for (i = 0; i < data_items; i++) { 11578 data[i].effective = tswap32(target_data[i].effective); 11579 data[i].permitted = tswap32(target_data[i].permitted); 11580 data[i].inheritable = tswap32(target_data[i].inheritable); 11581 } 11582 } 11583 11584 dataptr = data; 11585 } 11586 11587 if (num == TARGET_NR_capget) { 11588 ret = get_errno(capget(&header, dataptr)); 11589 } else { 11590 ret = get_errno(capset(&header, dataptr)); 11591 } 11592 11593 /* The kernel always updates version for both capget and capset */ 11594 target_header->version = tswap32(header.version); 11595 unlock_user_struct(target_header, arg1, 1); 11596 11597 if (arg2) { 11598 if (num == TARGET_NR_capget) { 11599 for (i = 0; i < data_items; i++) { 11600 target_data[i].effective = tswap32(data[i].effective); 11601 target_data[i].permitted = tswap32(data[i].permitted); 11602 target_data[i].inheritable = tswap32(data[i].inheritable); 11603 } 11604 unlock_user(target_data, arg2, target_datalen); 11605 } else { 11606 unlock_user(target_data, arg2, 0); 11607 } 11608 } 11609 return ret; 11610 } 11611 case TARGET_NR_sigaltstack: 11612 return do_sigaltstack(arg1, arg2, cpu_env); 11613 11614 #ifdef CONFIG_SENDFILE 11615 #ifdef TARGET_NR_sendfile 11616 case TARGET_NR_sendfile: 11617 { 11618 off_t *offp = NULL; 11619 off_t off; 11620 if (arg3) { 11621 ret = get_user_sal(off, arg3); 11622 if (is_error(ret)) { 11623 return ret; 11624 } 11625 offp = &off; 11626 } 11627 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11628 if (!is_error(ret) && arg3) { 11629 abi_long ret2 = put_user_sal(off, arg3); 11630 if (is_error(ret2)) { 11631 ret = ret2; 11632 } 11633 } 11634 return ret; 11635 } 11636 #endif 11637 #ifdef TARGET_NR_sendfile64 11638 case TARGET_NR_sendfile64: 11639 { 11640 off_t *offp = NULL; 11641 off_t off; 11642 if (arg3) { 11643 ret = get_user_s64(off, arg3); 11644 if (is_error(ret)) { 11645 return ret; 11646 } 11647 offp = &off; 11648 } 11649 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11650 if (!is_error(ret) && arg3) { 11651 abi_long ret2 = put_user_s64(off, arg3); 11652 if (is_error(ret2)) { 11653 ret = ret2; 11654 } 11655 } 11656 return ret; 11657 } 11658 #endif 11659 #endif 11660 #ifdef TARGET_NR_vfork 11661 case TARGET_NR_vfork: 11662 return get_errno(do_fork(cpu_env, 11663 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 11664 0, 0, 0, 0)); 11665 #endif 11666 #ifdef TARGET_NR_ugetrlimit 11667 case TARGET_NR_ugetrlimit: 11668 { 11669 struct rlimit rlim; 11670 int resource = target_to_host_resource(arg1); 11671 ret = get_errno(getrlimit(resource, &rlim)); 11672 if (!is_error(ret)) { 11673 struct target_rlimit *target_rlim; 11674 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 11675 return -TARGET_EFAULT; 11676 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 11677 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 11678 unlock_user_struct(target_rlim, arg2, 1); 11679 } 11680 return ret; 11681 } 11682 #endif 11683 #ifdef TARGET_NR_truncate64 11684 case TARGET_NR_truncate64: 11685 if (!(p = lock_user_string(arg1))) 11686 return -TARGET_EFAULT; 11687 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 11688 unlock_user(p, arg1, 0); 11689 return ret; 11690 #endif 11691 #ifdef TARGET_NR_ftruncate64 11692 case TARGET_NR_ftruncate64: 11693 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 11694 #endif 11695 #ifdef TARGET_NR_stat64 11696 case TARGET_NR_stat64: 11697 if (!(p = lock_user_string(arg1))) { 11698 return -TARGET_EFAULT; 11699 } 11700 ret = get_errno(stat(path(p), &st)); 11701 unlock_user(p, arg1, 0); 11702 if (!is_error(ret)) 11703 ret = host_to_target_stat64(cpu_env, arg2, &st); 11704 return ret; 11705 #endif 11706 #ifdef TARGET_NR_lstat64 11707 case TARGET_NR_lstat64: 11708 if (!(p = lock_user_string(arg1))) { 11709 return -TARGET_EFAULT; 11710 } 11711 ret = get_errno(lstat(path(p), &st)); 11712 unlock_user(p, arg1, 0); 11713 if (!is_error(ret)) 11714 ret = host_to_target_stat64(cpu_env, arg2, &st); 11715 return ret; 11716 #endif 11717 #ifdef TARGET_NR_fstat64 11718 case TARGET_NR_fstat64: 11719 ret = get_errno(fstat(arg1, &st)); 11720 if (!is_error(ret)) 11721 ret = host_to_target_stat64(cpu_env, arg2, &st); 11722 return ret; 11723 #endif 11724 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11725 #ifdef TARGET_NR_fstatat64 11726 case TARGET_NR_fstatat64: 11727 #endif 11728 #ifdef TARGET_NR_newfstatat 11729 case TARGET_NR_newfstatat: 11730 #endif 11731 if (!(p = lock_user_string(arg2))) { 11732 return -TARGET_EFAULT; 11733 } 11734 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11735 unlock_user(p, arg2, 0); 11736 if (!is_error(ret)) 11737 ret = host_to_target_stat64(cpu_env, arg3, &st); 11738 return ret; 11739 #endif 11740 #if defined(TARGET_NR_statx) 11741 case TARGET_NR_statx: 11742 { 11743 struct target_statx *target_stx; 11744 int dirfd = arg1; 11745 int flags = arg3; 11746 11747 p = lock_user_string(arg2); 11748 if (p == NULL) { 11749 return -TARGET_EFAULT; 11750 } 11751 #if defined(__NR_statx) 11752 { 11753 /* 11754 * It is assumed that struct statx is architecture independent. 11755 */ 11756 struct target_statx host_stx; 11757 int mask = arg4; 11758 11759 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11760 if (!is_error(ret)) { 11761 if (host_to_target_statx(&host_stx, arg5) != 0) { 11762 unlock_user(p, arg2, 0); 11763 return -TARGET_EFAULT; 11764 } 11765 } 11766 11767 if (ret != -TARGET_ENOSYS) { 11768 unlock_user(p, arg2, 0); 11769 return ret; 11770 } 11771 } 11772 #endif 11773 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11774 unlock_user(p, arg2, 0); 11775 11776 if (!is_error(ret)) { 11777 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11778 return -TARGET_EFAULT; 11779 } 11780 memset(target_stx, 0, sizeof(*target_stx)); 11781 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11782 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11783 __put_user(st.st_ino, &target_stx->stx_ino); 11784 __put_user(st.st_mode, &target_stx->stx_mode); 11785 __put_user(st.st_uid, &target_stx->stx_uid); 11786 __put_user(st.st_gid, &target_stx->stx_gid); 11787 __put_user(st.st_nlink, &target_stx->stx_nlink); 11788 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11789 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11790 __put_user(st.st_size, &target_stx->stx_size); 11791 __put_user(st.st_blksize, &target_stx->stx_blksize); 11792 __put_user(st.st_blocks, &target_stx->stx_blocks); 11793 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11794 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11795 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11796 unlock_user_struct(target_stx, arg5, 1); 11797 } 11798 } 11799 return ret; 11800 #endif 11801 #ifdef TARGET_NR_lchown 11802 case TARGET_NR_lchown: 11803 if (!(p = lock_user_string(arg1))) 11804 return -TARGET_EFAULT; 11805 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11806 unlock_user(p, arg1, 0); 11807 return ret; 11808 #endif 11809 #ifdef TARGET_NR_getuid 11810 case TARGET_NR_getuid: 11811 return get_errno(high2lowuid(getuid())); 11812 #endif 11813 #ifdef TARGET_NR_getgid 11814 case TARGET_NR_getgid: 11815 return get_errno(high2lowgid(getgid())); 11816 #endif 11817 #ifdef TARGET_NR_geteuid 11818 case TARGET_NR_geteuid: 11819 return get_errno(high2lowuid(geteuid())); 11820 #endif 11821 #ifdef TARGET_NR_getegid 11822 case TARGET_NR_getegid: 11823 return get_errno(high2lowgid(getegid())); 11824 #endif 11825 case TARGET_NR_setreuid: 11826 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11827 case TARGET_NR_setregid: 11828 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11829 case TARGET_NR_getgroups: 11830 { /* the same code as for TARGET_NR_getgroups32 */ 11831 int gidsetsize = arg1; 11832 target_id *target_grouplist; 11833 g_autofree gid_t *grouplist = NULL; 11834 int i; 11835 11836 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) { 11837 return -TARGET_EINVAL; 11838 } 11839 if (gidsetsize > 0) { 11840 grouplist = g_try_new(gid_t, gidsetsize); 11841 if (!grouplist) { 11842 return -TARGET_ENOMEM; 11843 } 11844 } 11845 ret = get_errno(getgroups(gidsetsize, grouplist)); 11846 if (!is_error(ret) && gidsetsize > 0) { 11847 target_grouplist = lock_user(VERIFY_WRITE, arg2, 11848 gidsetsize * sizeof(target_id), 0); 11849 if (!target_grouplist) { 11850 return -TARGET_EFAULT; 11851 } 11852 for (i = 0; i < ret; i++) { 11853 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11854 } 11855 unlock_user(target_grouplist, arg2, 11856 gidsetsize * sizeof(target_id)); 11857 } 11858 return ret; 11859 } 11860 case TARGET_NR_setgroups: 11861 { /* the same code as for TARGET_NR_setgroups32 */ 11862 int gidsetsize = arg1; 11863 target_id *target_grouplist; 11864 g_autofree gid_t *grouplist = NULL; 11865 int i; 11866 11867 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) { 11868 return -TARGET_EINVAL; 11869 } 11870 if (gidsetsize > 0) { 11871 grouplist = g_try_new(gid_t, gidsetsize); 11872 if (!grouplist) { 11873 return -TARGET_ENOMEM; 11874 } 11875 target_grouplist = lock_user(VERIFY_READ, arg2, 11876 gidsetsize * sizeof(target_id), 1); 11877 if (!target_grouplist) { 11878 return -TARGET_EFAULT; 11879 } 11880 for (i = 0; i < gidsetsize; i++) { 11881 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11882 } 11883 unlock_user(target_grouplist, arg2, 11884 gidsetsize * sizeof(target_id)); 11885 } 11886 return get_errno(setgroups(gidsetsize, grouplist)); 11887 } 11888 case TARGET_NR_fchown: 11889 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11890 #if defined(TARGET_NR_fchownat) 11891 case TARGET_NR_fchownat: 11892 if (!(p = lock_user_string(arg2))) 11893 return -TARGET_EFAULT; 11894 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11895 low2highgid(arg4), arg5)); 11896 unlock_user(p, arg2, 0); 11897 return ret; 11898 #endif 11899 #ifdef TARGET_NR_setresuid 11900 case TARGET_NR_setresuid: 11901 return get_errno(sys_setresuid(low2highuid(arg1), 11902 low2highuid(arg2), 11903 low2highuid(arg3))); 11904 #endif 11905 #ifdef TARGET_NR_getresuid 11906 case TARGET_NR_getresuid: 11907 { 11908 uid_t ruid, euid, suid; 11909 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11910 if (!is_error(ret)) { 11911 if (put_user_id(high2lowuid(ruid), arg1) 11912 || put_user_id(high2lowuid(euid), arg2) 11913 || put_user_id(high2lowuid(suid), arg3)) 11914 return -TARGET_EFAULT; 11915 } 11916 } 11917 return ret; 11918 #endif 11919 #ifdef TARGET_NR_getresgid 11920 case TARGET_NR_setresgid: 11921 return get_errno(sys_setresgid(low2highgid(arg1), 11922 low2highgid(arg2), 11923 low2highgid(arg3))); 11924 #endif 11925 #ifdef TARGET_NR_getresgid 11926 case TARGET_NR_getresgid: 11927 { 11928 gid_t rgid, egid, sgid; 11929 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11930 if (!is_error(ret)) { 11931 if (put_user_id(high2lowgid(rgid), arg1) 11932 || put_user_id(high2lowgid(egid), arg2) 11933 || put_user_id(high2lowgid(sgid), arg3)) 11934 return -TARGET_EFAULT; 11935 } 11936 } 11937 return ret; 11938 #endif 11939 #ifdef TARGET_NR_chown 11940 case TARGET_NR_chown: 11941 if (!(p = lock_user_string(arg1))) 11942 return -TARGET_EFAULT; 11943 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11944 unlock_user(p, arg1, 0); 11945 return ret; 11946 #endif 11947 case TARGET_NR_setuid: 11948 return get_errno(sys_setuid(low2highuid(arg1))); 11949 case TARGET_NR_setgid: 11950 return get_errno(sys_setgid(low2highgid(arg1))); 11951 case TARGET_NR_setfsuid: 11952 return get_errno(setfsuid(arg1)); 11953 case TARGET_NR_setfsgid: 11954 return get_errno(setfsgid(arg1)); 11955 11956 #ifdef TARGET_NR_lchown32 11957 case TARGET_NR_lchown32: 11958 if (!(p = lock_user_string(arg1))) 11959 return -TARGET_EFAULT; 11960 ret = get_errno(lchown(p, arg2, arg3)); 11961 unlock_user(p, arg1, 0); 11962 return ret; 11963 #endif 11964 #ifdef TARGET_NR_getuid32 11965 case TARGET_NR_getuid32: 11966 return get_errno(getuid()); 11967 #endif 11968 11969 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11970 /* Alpha specific */ 11971 case TARGET_NR_getxuid: 11972 { 11973 uid_t euid; 11974 euid=geteuid(); 11975 cpu_env->ir[IR_A4]=euid; 11976 } 11977 return get_errno(getuid()); 11978 #endif 11979 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11980 /* Alpha specific */ 11981 case TARGET_NR_getxgid: 11982 { 11983 uid_t egid; 11984 egid=getegid(); 11985 cpu_env->ir[IR_A4]=egid; 11986 } 11987 return get_errno(getgid()); 11988 #endif 11989 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11990 /* Alpha specific */ 11991 case TARGET_NR_osf_getsysinfo: 11992 ret = -TARGET_EOPNOTSUPP; 11993 switch (arg1) { 11994 case TARGET_GSI_IEEE_FP_CONTROL: 11995 { 11996 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11997 uint64_t swcr = cpu_env->swcr; 11998 11999 swcr &= ~SWCR_STATUS_MASK; 12000 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 12001 12002 if (put_user_u64 (swcr, arg2)) 12003 return -TARGET_EFAULT; 12004 ret = 0; 12005 } 12006 break; 12007 12008 /* case GSI_IEEE_STATE_AT_SIGNAL: 12009 -- Not implemented in linux kernel. 12010 case GSI_UACPROC: 12011 -- Retrieves current unaligned access state; not much used. 12012 case GSI_PROC_TYPE: 12013 -- Retrieves implver information; surely not used. 12014 case GSI_GET_HWRPB: 12015 -- Grabs a copy of the HWRPB; surely not used. 12016 */ 12017 } 12018 return ret; 12019 #endif 12020 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 12021 /* Alpha specific */ 12022 case TARGET_NR_osf_setsysinfo: 12023 ret = -TARGET_EOPNOTSUPP; 12024 switch (arg1) { 12025 case TARGET_SSI_IEEE_FP_CONTROL: 12026 { 12027 uint64_t swcr, fpcr; 12028 12029 if (get_user_u64 (swcr, arg2)) { 12030 return -TARGET_EFAULT; 12031 } 12032 12033 /* 12034 * The kernel calls swcr_update_status to update the 12035 * status bits from the fpcr at every point that it 12036 * could be queried. Therefore, we store the status 12037 * bits only in FPCR. 12038 */ 12039 cpu_env->swcr = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 12040 12041 fpcr = cpu_alpha_load_fpcr(cpu_env); 12042 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 12043 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 12044 cpu_alpha_store_fpcr(cpu_env, fpcr); 12045 ret = 0; 12046 } 12047 break; 12048 12049 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 12050 { 12051 uint64_t exc, fpcr, fex; 12052 12053 if (get_user_u64(exc, arg2)) { 12054 return -TARGET_EFAULT; 12055 } 12056 exc &= SWCR_STATUS_MASK; 12057 fpcr = cpu_alpha_load_fpcr(cpu_env); 12058 12059 /* Old exceptions are not signaled. */ 12060 fex = alpha_ieee_fpcr_to_swcr(fpcr); 12061 fex = exc & ~fex; 12062 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 12063 fex &= (cpu_env)->swcr; 12064 12065 /* Update the hardware fpcr. */ 12066 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 12067 cpu_alpha_store_fpcr(cpu_env, fpcr); 12068 12069 if (fex) { 12070 int si_code = TARGET_FPE_FLTUNK; 12071 target_siginfo_t info; 12072 12073 if (fex & SWCR_TRAP_ENABLE_DNO) { 12074 si_code = TARGET_FPE_FLTUND; 12075 } 12076 if (fex & SWCR_TRAP_ENABLE_INE) { 12077 si_code = TARGET_FPE_FLTRES; 12078 } 12079 if (fex & SWCR_TRAP_ENABLE_UNF) { 12080 si_code = TARGET_FPE_FLTUND; 12081 } 12082 if (fex & SWCR_TRAP_ENABLE_OVF) { 12083 si_code = TARGET_FPE_FLTOVF; 12084 } 12085 if (fex & SWCR_TRAP_ENABLE_DZE) { 12086 si_code = TARGET_FPE_FLTDIV; 12087 } 12088 if (fex & SWCR_TRAP_ENABLE_INV) { 12089 si_code = TARGET_FPE_FLTINV; 12090 } 12091 12092 info.si_signo = SIGFPE; 12093 info.si_errno = 0; 12094 info.si_code = si_code; 12095 info._sifields._sigfault._addr = (cpu_env)->pc; 12096 queue_signal(cpu_env, info.si_signo, 12097 QEMU_SI_FAULT, &info); 12098 } 12099 ret = 0; 12100 } 12101 break; 12102 12103 /* case SSI_NVPAIRS: 12104 -- Used with SSIN_UACPROC to enable unaligned accesses. 12105 case SSI_IEEE_STATE_AT_SIGNAL: 12106 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 12107 -- Not implemented in linux kernel 12108 */ 12109 } 12110 return ret; 12111 #endif 12112 #ifdef TARGET_NR_osf_sigprocmask 12113 /* Alpha specific. */ 12114 case TARGET_NR_osf_sigprocmask: 12115 { 12116 abi_ulong mask; 12117 int how; 12118 sigset_t set, oldset; 12119 12120 switch(arg1) { 12121 case TARGET_SIG_BLOCK: 12122 how = SIG_BLOCK; 12123 break; 12124 case TARGET_SIG_UNBLOCK: 12125 how = SIG_UNBLOCK; 12126 break; 12127 case TARGET_SIG_SETMASK: 12128 how = SIG_SETMASK; 12129 break; 12130 default: 12131 return -TARGET_EINVAL; 12132 } 12133 mask = arg2; 12134 target_to_host_old_sigset(&set, &mask); 12135 ret = do_sigprocmask(how, &set, &oldset); 12136 if (!ret) { 12137 host_to_target_old_sigset(&mask, &oldset); 12138 ret = mask; 12139 } 12140 } 12141 return ret; 12142 #endif 12143 12144 #ifdef TARGET_NR_getgid32 12145 case TARGET_NR_getgid32: 12146 return get_errno(getgid()); 12147 #endif 12148 #ifdef TARGET_NR_geteuid32 12149 case TARGET_NR_geteuid32: 12150 return get_errno(geteuid()); 12151 #endif 12152 #ifdef TARGET_NR_getegid32 12153 case TARGET_NR_getegid32: 12154 return get_errno(getegid()); 12155 #endif 12156 #ifdef TARGET_NR_setreuid32 12157 case TARGET_NR_setreuid32: 12158 return get_errno(setreuid(arg1, arg2)); 12159 #endif 12160 #ifdef TARGET_NR_setregid32 12161 case TARGET_NR_setregid32: 12162 return get_errno(setregid(arg1, arg2)); 12163 #endif 12164 #ifdef TARGET_NR_getgroups32 12165 case TARGET_NR_getgroups32: 12166 { /* the same code as for TARGET_NR_getgroups */ 12167 int gidsetsize = arg1; 12168 uint32_t *target_grouplist; 12169 g_autofree gid_t *grouplist = NULL; 12170 int i; 12171 12172 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) { 12173 return -TARGET_EINVAL; 12174 } 12175 if (gidsetsize > 0) { 12176 grouplist = g_try_new(gid_t, gidsetsize); 12177 if (!grouplist) { 12178 return -TARGET_ENOMEM; 12179 } 12180 } 12181 ret = get_errno(getgroups(gidsetsize, grouplist)); 12182 if (!is_error(ret) && gidsetsize > 0) { 12183 target_grouplist = lock_user(VERIFY_WRITE, arg2, 12184 gidsetsize * 4, 0); 12185 if (!target_grouplist) { 12186 return -TARGET_EFAULT; 12187 } 12188 for (i = 0; i < ret; i++) { 12189 target_grouplist[i] = tswap32(grouplist[i]); 12190 } 12191 unlock_user(target_grouplist, arg2, gidsetsize * 4); 12192 } 12193 return ret; 12194 } 12195 #endif 12196 #ifdef TARGET_NR_setgroups32 12197 case TARGET_NR_setgroups32: 12198 { /* the same code as for TARGET_NR_setgroups */ 12199 int gidsetsize = arg1; 12200 uint32_t *target_grouplist; 12201 g_autofree gid_t *grouplist = NULL; 12202 int i; 12203 12204 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) { 12205 return -TARGET_EINVAL; 12206 } 12207 if (gidsetsize > 0) { 12208 grouplist = g_try_new(gid_t, gidsetsize); 12209 if (!grouplist) { 12210 return -TARGET_ENOMEM; 12211 } 12212 target_grouplist = lock_user(VERIFY_READ, arg2, 12213 gidsetsize * 4, 1); 12214 if (!target_grouplist) { 12215 return -TARGET_EFAULT; 12216 } 12217 for (i = 0; i < gidsetsize; i++) { 12218 grouplist[i] = tswap32(target_grouplist[i]); 12219 } 12220 unlock_user(target_grouplist, arg2, 0); 12221 } 12222 return get_errno(setgroups(gidsetsize, grouplist)); 12223 } 12224 #endif 12225 #ifdef TARGET_NR_fchown32 12226 case TARGET_NR_fchown32: 12227 return get_errno(fchown(arg1, arg2, arg3)); 12228 #endif 12229 #ifdef TARGET_NR_setresuid32 12230 case TARGET_NR_setresuid32: 12231 return get_errno(sys_setresuid(arg1, arg2, arg3)); 12232 #endif 12233 #ifdef TARGET_NR_getresuid32 12234 case TARGET_NR_getresuid32: 12235 { 12236 uid_t ruid, euid, suid; 12237 ret = get_errno(getresuid(&ruid, &euid, &suid)); 12238 if (!is_error(ret)) { 12239 if (put_user_u32(ruid, arg1) 12240 || put_user_u32(euid, arg2) 12241 || put_user_u32(suid, arg3)) 12242 return -TARGET_EFAULT; 12243 } 12244 } 12245 return ret; 12246 #endif 12247 #ifdef TARGET_NR_setresgid32 12248 case TARGET_NR_setresgid32: 12249 return get_errno(sys_setresgid(arg1, arg2, arg3)); 12250 #endif 12251 #ifdef TARGET_NR_getresgid32 12252 case TARGET_NR_getresgid32: 12253 { 12254 gid_t rgid, egid, sgid; 12255 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 12256 if (!is_error(ret)) { 12257 if (put_user_u32(rgid, arg1) 12258 || put_user_u32(egid, arg2) 12259 || put_user_u32(sgid, arg3)) 12260 return -TARGET_EFAULT; 12261 } 12262 } 12263 return ret; 12264 #endif 12265 #ifdef TARGET_NR_chown32 12266 case TARGET_NR_chown32: 12267 if (!(p = lock_user_string(arg1))) 12268 return -TARGET_EFAULT; 12269 ret = get_errno(chown(p, arg2, arg3)); 12270 unlock_user(p, arg1, 0); 12271 return ret; 12272 #endif 12273 #ifdef TARGET_NR_setuid32 12274 case TARGET_NR_setuid32: 12275 return get_errno(sys_setuid(arg1)); 12276 #endif 12277 #ifdef TARGET_NR_setgid32 12278 case TARGET_NR_setgid32: 12279 return get_errno(sys_setgid(arg1)); 12280 #endif 12281 #ifdef TARGET_NR_setfsuid32 12282 case TARGET_NR_setfsuid32: 12283 return get_errno(setfsuid(arg1)); 12284 #endif 12285 #ifdef TARGET_NR_setfsgid32 12286 case TARGET_NR_setfsgid32: 12287 return get_errno(setfsgid(arg1)); 12288 #endif 12289 #ifdef TARGET_NR_mincore 12290 case TARGET_NR_mincore: 12291 { 12292 void *a = lock_user(VERIFY_NONE, arg1, arg2, 0); 12293 if (!a) { 12294 return -TARGET_ENOMEM; 12295 } 12296 p = lock_user_string(arg3); 12297 if (!p) { 12298 ret = -TARGET_EFAULT; 12299 } else { 12300 ret = get_errno(mincore(a, arg2, p)); 12301 unlock_user(p, arg3, ret); 12302 } 12303 unlock_user(a, arg1, 0); 12304 } 12305 return ret; 12306 #endif 12307 #ifdef TARGET_NR_arm_fadvise64_64 12308 case TARGET_NR_arm_fadvise64_64: 12309 /* arm_fadvise64_64 looks like fadvise64_64 but 12310 * with different argument order: fd, advice, offset, len 12311 * rather than the usual fd, offset, len, advice. 12312 * Note that offset and len are both 64-bit so appear as 12313 * pairs of 32-bit registers. 12314 */ 12315 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 12316 target_offset64(arg5, arg6), arg2); 12317 return -host_to_target_errno(ret); 12318 #endif 12319 12320 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12321 12322 #ifdef TARGET_NR_fadvise64_64 12323 case TARGET_NR_fadvise64_64: 12324 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 12325 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 12326 ret = arg2; 12327 arg2 = arg3; 12328 arg3 = arg4; 12329 arg4 = arg5; 12330 arg5 = arg6; 12331 arg6 = ret; 12332 #else 12333 /* 6 args: fd, offset (high, low), len (high, low), advice */ 12334 if (regpairs_aligned(cpu_env, num)) { 12335 /* offset is in (3,4), len in (5,6) and advice in 7 */ 12336 arg2 = arg3; 12337 arg3 = arg4; 12338 arg4 = arg5; 12339 arg5 = arg6; 12340 arg6 = arg7; 12341 } 12342 #endif 12343 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 12344 target_offset64(arg4, arg5), arg6); 12345 return -host_to_target_errno(ret); 12346 #endif 12347 12348 #ifdef TARGET_NR_fadvise64 12349 case TARGET_NR_fadvise64: 12350 /* 5 args: fd, offset (high, low), len, advice */ 12351 if (regpairs_aligned(cpu_env, num)) { 12352 /* offset is in (3,4), len in 5 and advice in 6 */ 12353 arg2 = arg3; 12354 arg3 = arg4; 12355 arg4 = arg5; 12356 arg5 = arg6; 12357 } 12358 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 12359 return -host_to_target_errno(ret); 12360 #endif 12361 12362 #else /* not a 32-bit ABI */ 12363 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 12364 #ifdef TARGET_NR_fadvise64_64 12365 case TARGET_NR_fadvise64_64: 12366 #endif 12367 #ifdef TARGET_NR_fadvise64 12368 case TARGET_NR_fadvise64: 12369 #endif 12370 #ifdef TARGET_S390X 12371 switch (arg4) { 12372 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 12373 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 12374 case 6: arg4 = POSIX_FADV_DONTNEED; break; 12375 case 7: arg4 = POSIX_FADV_NOREUSE; break; 12376 default: break; 12377 } 12378 #endif 12379 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 12380 #endif 12381 #endif /* end of 64-bit ABI fadvise handling */ 12382 12383 #ifdef TARGET_NR_madvise 12384 case TARGET_NR_madvise: 12385 return target_madvise(arg1, arg2, arg3); 12386 #endif 12387 #ifdef TARGET_NR_fcntl64 12388 case TARGET_NR_fcntl64: 12389 { 12390 int cmd; 12391 struct flock64 fl; 12392 from_flock64_fn *copyfrom = copy_from_user_flock64; 12393 to_flock64_fn *copyto = copy_to_user_flock64; 12394 12395 #ifdef TARGET_ARM 12396 if (!cpu_env->eabi) { 12397 copyfrom = copy_from_user_oabi_flock64; 12398 copyto = copy_to_user_oabi_flock64; 12399 } 12400 #endif 12401 12402 cmd = target_to_host_fcntl_cmd(arg2); 12403 if (cmd == -TARGET_EINVAL) { 12404 return cmd; 12405 } 12406 12407 switch(arg2) { 12408 case TARGET_F_GETLK64: 12409 ret = copyfrom(&fl, arg3); 12410 if (ret) { 12411 break; 12412 } 12413 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 12414 if (ret == 0) { 12415 ret = copyto(arg3, &fl); 12416 } 12417 break; 12418 12419 case TARGET_F_SETLK64: 12420 case TARGET_F_SETLKW64: 12421 ret = copyfrom(&fl, arg3); 12422 if (ret) { 12423 break; 12424 } 12425 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 12426 break; 12427 default: 12428 ret = do_fcntl(arg1, arg2, arg3); 12429 break; 12430 } 12431 return ret; 12432 } 12433 #endif 12434 #ifdef TARGET_NR_cacheflush 12435 case TARGET_NR_cacheflush: 12436 /* self-modifying code is handled automatically, so nothing needed */ 12437 return 0; 12438 #endif 12439 #ifdef TARGET_NR_getpagesize 12440 case TARGET_NR_getpagesize: 12441 return TARGET_PAGE_SIZE; 12442 #endif 12443 case TARGET_NR_gettid: 12444 return get_errno(sys_gettid()); 12445 #ifdef TARGET_NR_readahead 12446 case TARGET_NR_readahead: 12447 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12448 if (regpairs_aligned(cpu_env, num)) { 12449 arg2 = arg3; 12450 arg3 = arg4; 12451 arg4 = arg5; 12452 } 12453 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 12454 #else 12455 ret = get_errno(readahead(arg1, arg2, arg3)); 12456 #endif 12457 return ret; 12458 #endif 12459 #ifdef CONFIG_ATTR 12460 #ifdef TARGET_NR_setxattr 12461 case TARGET_NR_listxattr: 12462 case TARGET_NR_llistxattr: 12463 { 12464 void *p, *b = 0; 12465 if (arg2) { 12466 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 12467 if (!b) { 12468 return -TARGET_EFAULT; 12469 } 12470 } 12471 p = lock_user_string(arg1); 12472 if (p) { 12473 if (num == TARGET_NR_listxattr) { 12474 ret = get_errno(listxattr(p, b, arg3)); 12475 } else { 12476 ret = get_errno(llistxattr(p, b, arg3)); 12477 } 12478 } else { 12479 ret = -TARGET_EFAULT; 12480 } 12481 unlock_user(p, arg1, 0); 12482 unlock_user(b, arg2, arg3); 12483 return ret; 12484 } 12485 case TARGET_NR_flistxattr: 12486 { 12487 void *b = 0; 12488 if (arg2) { 12489 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 12490 if (!b) { 12491 return -TARGET_EFAULT; 12492 } 12493 } 12494 ret = get_errno(flistxattr(arg1, b, arg3)); 12495 unlock_user(b, arg2, arg3); 12496 return ret; 12497 } 12498 case TARGET_NR_setxattr: 12499 case TARGET_NR_lsetxattr: 12500 { 12501 void *p, *n, *v = 0; 12502 if (arg3) { 12503 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12504 if (!v) { 12505 return -TARGET_EFAULT; 12506 } 12507 } 12508 p = lock_user_string(arg1); 12509 n = lock_user_string(arg2); 12510 if (p && n) { 12511 if (num == TARGET_NR_setxattr) { 12512 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 12513 } else { 12514 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 12515 } 12516 } else { 12517 ret = -TARGET_EFAULT; 12518 } 12519 unlock_user(p, arg1, 0); 12520 unlock_user(n, arg2, 0); 12521 unlock_user(v, arg3, 0); 12522 } 12523 return ret; 12524 case TARGET_NR_fsetxattr: 12525 { 12526 void *n, *v = 0; 12527 if (arg3) { 12528 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12529 if (!v) { 12530 return -TARGET_EFAULT; 12531 } 12532 } 12533 n = lock_user_string(arg2); 12534 if (n) { 12535 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 12536 } else { 12537 ret = -TARGET_EFAULT; 12538 } 12539 unlock_user(n, arg2, 0); 12540 unlock_user(v, arg3, 0); 12541 } 12542 return ret; 12543 case TARGET_NR_getxattr: 12544 case TARGET_NR_lgetxattr: 12545 { 12546 void *p, *n, *v = 0; 12547 if (arg3) { 12548 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12549 if (!v) { 12550 return -TARGET_EFAULT; 12551 } 12552 } 12553 p = lock_user_string(arg1); 12554 n = lock_user_string(arg2); 12555 if (p && n) { 12556 if (num == TARGET_NR_getxattr) { 12557 ret = get_errno(getxattr(p, n, v, arg4)); 12558 } else { 12559 ret = get_errno(lgetxattr(p, n, v, arg4)); 12560 } 12561 } else { 12562 ret = -TARGET_EFAULT; 12563 } 12564 unlock_user(p, arg1, 0); 12565 unlock_user(n, arg2, 0); 12566 unlock_user(v, arg3, arg4); 12567 } 12568 return ret; 12569 case TARGET_NR_fgetxattr: 12570 { 12571 void *n, *v = 0; 12572 if (arg3) { 12573 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12574 if (!v) { 12575 return -TARGET_EFAULT; 12576 } 12577 } 12578 n = lock_user_string(arg2); 12579 if (n) { 12580 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 12581 } else { 12582 ret = -TARGET_EFAULT; 12583 } 12584 unlock_user(n, arg2, 0); 12585 unlock_user(v, arg3, arg4); 12586 } 12587 return ret; 12588 case TARGET_NR_removexattr: 12589 case TARGET_NR_lremovexattr: 12590 { 12591 void *p, *n; 12592 p = lock_user_string(arg1); 12593 n = lock_user_string(arg2); 12594 if (p && n) { 12595 if (num == TARGET_NR_removexattr) { 12596 ret = get_errno(removexattr(p, n)); 12597 } else { 12598 ret = get_errno(lremovexattr(p, n)); 12599 } 12600 } else { 12601 ret = -TARGET_EFAULT; 12602 } 12603 unlock_user(p, arg1, 0); 12604 unlock_user(n, arg2, 0); 12605 } 12606 return ret; 12607 case TARGET_NR_fremovexattr: 12608 { 12609 void *n; 12610 n = lock_user_string(arg2); 12611 if (n) { 12612 ret = get_errno(fremovexattr(arg1, n)); 12613 } else { 12614 ret = -TARGET_EFAULT; 12615 } 12616 unlock_user(n, arg2, 0); 12617 } 12618 return ret; 12619 #endif 12620 #endif /* CONFIG_ATTR */ 12621 #ifdef TARGET_NR_set_thread_area 12622 case TARGET_NR_set_thread_area: 12623 #if defined(TARGET_MIPS) 12624 cpu_env->active_tc.CP0_UserLocal = arg1; 12625 return 0; 12626 #elif defined(TARGET_CRIS) 12627 if (arg1 & 0xff) 12628 ret = -TARGET_EINVAL; 12629 else { 12630 cpu_env->pregs[PR_PID] = arg1; 12631 ret = 0; 12632 } 12633 return ret; 12634 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 12635 return do_set_thread_area(cpu_env, arg1); 12636 #elif defined(TARGET_M68K) 12637 { 12638 TaskState *ts = cpu->opaque; 12639 ts->tp_value = arg1; 12640 return 0; 12641 } 12642 #else 12643 return -TARGET_ENOSYS; 12644 #endif 12645 #endif 12646 #ifdef TARGET_NR_get_thread_area 12647 case TARGET_NR_get_thread_area: 12648 #if defined(TARGET_I386) && defined(TARGET_ABI32) 12649 return do_get_thread_area(cpu_env, arg1); 12650 #elif defined(TARGET_M68K) 12651 { 12652 TaskState *ts = cpu->opaque; 12653 return ts->tp_value; 12654 } 12655 #else 12656 return -TARGET_ENOSYS; 12657 #endif 12658 #endif 12659 #ifdef TARGET_NR_getdomainname 12660 case TARGET_NR_getdomainname: 12661 return -TARGET_ENOSYS; 12662 #endif 12663 12664 #ifdef TARGET_NR_clock_settime 12665 case TARGET_NR_clock_settime: 12666 { 12667 struct timespec ts; 12668 12669 ret = target_to_host_timespec(&ts, arg2); 12670 if (!is_error(ret)) { 12671 ret = get_errno(clock_settime(arg1, &ts)); 12672 } 12673 return ret; 12674 } 12675 #endif 12676 #ifdef TARGET_NR_clock_settime64 12677 case TARGET_NR_clock_settime64: 12678 { 12679 struct timespec ts; 12680 12681 ret = target_to_host_timespec64(&ts, arg2); 12682 if (!is_error(ret)) { 12683 ret = get_errno(clock_settime(arg1, &ts)); 12684 } 12685 return ret; 12686 } 12687 #endif 12688 #ifdef TARGET_NR_clock_gettime 12689 case TARGET_NR_clock_gettime: 12690 { 12691 struct timespec ts; 12692 ret = get_errno(clock_gettime(arg1, &ts)); 12693 if (!is_error(ret)) { 12694 ret = host_to_target_timespec(arg2, &ts); 12695 } 12696 return ret; 12697 } 12698 #endif 12699 #ifdef TARGET_NR_clock_gettime64 12700 case TARGET_NR_clock_gettime64: 12701 { 12702 struct timespec ts; 12703 ret = get_errno(clock_gettime(arg1, &ts)); 12704 if (!is_error(ret)) { 12705 ret = host_to_target_timespec64(arg2, &ts); 12706 } 12707 return ret; 12708 } 12709 #endif 12710 #ifdef TARGET_NR_clock_getres 12711 case TARGET_NR_clock_getres: 12712 { 12713 struct timespec ts; 12714 ret = get_errno(clock_getres(arg1, &ts)); 12715 if (!is_error(ret)) { 12716 host_to_target_timespec(arg2, &ts); 12717 } 12718 return ret; 12719 } 12720 #endif 12721 #ifdef TARGET_NR_clock_getres_time64 12722 case TARGET_NR_clock_getres_time64: 12723 { 12724 struct timespec ts; 12725 ret = get_errno(clock_getres(arg1, &ts)); 12726 if (!is_error(ret)) { 12727 host_to_target_timespec64(arg2, &ts); 12728 } 12729 return ret; 12730 } 12731 #endif 12732 #ifdef TARGET_NR_clock_nanosleep 12733 case TARGET_NR_clock_nanosleep: 12734 { 12735 struct timespec ts; 12736 if (target_to_host_timespec(&ts, arg3)) { 12737 return -TARGET_EFAULT; 12738 } 12739 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12740 &ts, arg4 ? &ts : NULL)); 12741 /* 12742 * if the call is interrupted by a signal handler, it fails 12743 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12744 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12745 */ 12746 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12747 host_to_target_timespec(arg4, &ts)) { 12748 return -TARGET_EFAULT; 12749 } 12750 12751 return ret; 12752 } 12753 #endif 12754 #ifdef TARGET_NR_clock_nanosleep_time64 12755 case TARGET_NR_clock_nanosleep_time64: 12756 { 12757 struct timespec ts; 12758 12759 if (target_to_host_timespec64(&ts, arg3)) { 12760 return -TARGET_EFAULT; 12761 } 12762 12763 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12764 &ts, arg4 ? &ts : NULL)); 12765 12766 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12767 host_to_target_timespec64(arg4, &ts)) { 12768 return -TARGET_EFAULT; 12769 } 12770 return ret; 12771 } 12772 #endif 12773 12774 #if defined(TARGET_NR_set_tid_address) 12775 case TARGET_NR_set_tid_address: 12776 { 12777 TaskState *ts = cpu->opaque; 12778 ts->child_tidptr = arg1; 12779 /* do not call host set_tid_address() syscall, instead return tid() */ 12780 return get_errno(sys_gettid()); 12781 } 12782 #endif 12783 12784 case TARGET_NR_tkill: 12785 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12786 12787 case TARGET_NR_tgkill: 12788 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12789 target_to_host_signal(arg3))); 12790 12791 #ifdef TARGET_NR_set_robust_list 12792 case TARGET_NR_set_robust_list: 12793 case TARGET_NR_get_robust_list: 12794 /* The ABI for supporting robust futexes has userspace pass 12795 * the kernel a pointer to a linked list which is updated by 12796 * userspace after the syscall; the list is walked by the kernel 12797 * when the thread exits. Since the linked list in QEMU guest 12798 * memory isn't a valid linked list for the host and we have 12799 * no way to reliably intercept the thread-death event, we can't 12800 * support these. Silently return ENOSYS so that guest userspace 12801 * falls back to a non-robust futex implementation (which should 12802 * be OK except in the corner case of the guest crashing while 12803 * holding a mutex that is shared with another process via 12804 * shared memory). 12805 */ 12806 return -TARGET_ENOSYS; 12807 #endif 12808 12809 #if defined(TARGET_NR_utimensat) 12810 case TARGET_NR_utimensat: 12811 { 12812 struct timespec *tsp, ts[2]; 12813 if (!arg3) { 12814 tsp = NULL; 12815 } else { 12816 if (target_to_host_timespec(ts, arg3)) { 12817 return -TARGET_EFAULT; 12818 } 12819 if (target_to_host_timespec(ts + 1, arg3 + 12820 sizeof(struct target_timespec))) { 12821 return -TARGET_EFAULT; 12822 } 12823 tsp = ts; 12824 } 12825 if (!arg2) 12826 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12827 else { 12828 if (!(p = lock_user_string(arg2))) { 12829 return -TARGET_EFAULT; 12830 } 12831 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12832 unlock_user(p, arg2, 0); 12833 } 12834 } 12835 return ret; 12836 #endif 12837 #ifdef TARGET_NR_utimensat_time64 12838 case TARGET_NR_utimensat_time64: 12839 { 12840 struct timespec *tsp, ts[2]; 12841 if (!arg3) { 12842 tsp = NULL; 12843 } else { 12844 if (target_to_host_timespec64(ts, arg3)) { 12845 return -TARGET_EFAULT; 12846 } 12847 if (target_to_host_timespec64(ts + 1, arg3 + 12848 sizeof(struct target__kernel_timespec))) { 12849 return -TARGET_EFAULT; 12850 } 12851 tsp = ts; 12852 } 12853 if (!arg2) 12854 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12855 else { 12856 p = lock_user_string(arg2); 12857 if (!p) { 12858 return -TARGET_EFAULT; 12859 } 12860 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12861 unlock_user(p, arg2, 0); 12862 } 12863 } 12864 return ret; 12865 #endif 12866 #ifdef TARGET_NR_futex 12867 case TARGET_NR_futex: 12868 return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6); 12869 #endif 12870 #ifdef TARGET_NR_futex_time64 12871 case TARGET_NR_futex_time64: 12872 return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6); 12873 #endif 12874 #ifdef CONFIG_INOTIFY 12875 #if defined(TARGET_NR_inotify_init) 12876 case TARGET_NR_inotify_init: 12877 ret = get_errno(inotify_init()); 12878 if (ret >= 0) { 12879 fd_trans_register(ret, &target_inotify_trans); 12880 } 12881 return ret; 12882 #endif 12883 #if defined(TARGET_NR_inotify_init1) && defined(CONFIG_INOTIFY1) 12884 case TARGET_NR_inotify_init1: 12885 ret = get_errno(inotify_init1(target_to_host_bitmask(arg1, 12886 fcntl_flags_tbl))); 12887 if (ret >= 0) { 12888 fd_trans_register(ret, &target_inotify_trans); 12889 } 12890 return ret; 12891 #endif 12892 #if defined(TARGET_NR_inotify_add_watch) 12893 case TARGET_NR_inotify_add_watch: 12894 p = lock_user_string(arg2); 12895 ret = get_errno(inotify_add_watch(arg1, path(p), arg3)); 12896 unlock_user(p, arg2, 0); 12897 return ret; 12898 #endif 12899 #if defined(TARGET_NR_inotify_rm_watch) 12900 case TARGET_NR_inotify_rm_watch: 12901 return get_errno(inotify_rm_watch(arg1, arg2)); 12902 #endif 12903 #endif 12904 12905 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12906 case TARGET_NR_mq_open: 12907 { 12908 struct mq_attr posix_mq_attr; 12909 struct mq_attr *pposix_mq_attr; 12910 int host_flags; 12911 12912 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12913 pposix_mq_attr = NULL; 12914 if (arg4) { 12915 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12916 return -TARGET_EFAULT; 12917 } 12918 pposix_mq_attr = &posix_mq_attr; 12919 } 12920 p = lock_user_string(arg1 - 1); 12921 if (!p) { 12922 return -TARGET_EFAULT; 12923 } 12924 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12925 unlock_user (p, arg1, 0); 12926 } 12927 return ret; 12928 12929 case TARGET_NR_mq_unlink: 12930 p = lock_user_string(arg1 - 1); 12931 if (!p) { 12932 return -TARGET_EFAULT; 12933 } 12934 ret = get_errno(mq_unlink(p)); 12935 unlock_user (p, arg1, 0); 12936 return ret; 12937 12938 #ifdef TARGET_NR_mq_timedsend 12939 case TARGET_NR_mq_timedsend: 12940 { 12941 struct timespec ts; 12942 12943 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12944 if (arg5 != 0) { 12945 if (target_to_host_timespec(&ts, arg5)) { 12946 return -TARGET_EFAULT; 12947 } 12948 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12949 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12950 return -TARGET_EFAULT; 12951 } 12952 } else { 12953 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12954 } 12955 unlock_user (p, arg2, arg3); 12956 } 12957 return ret; 12958 #endif 12959 #ifdef TARGET_NR_mq_timedsend_time64 12960 case TARGET_NR_mq_timedsend_time64: 12961 { 12962 struct timespec ts; 12963 12964 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12965 if (arg5 != 0) { 12966 if (target_to_host_timespec64(&ts, arg5)) { 12967 return -TARGET_EFAULT; 12968 } 12969 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12970 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12971 return -TARGET_EFAULT; 12972 } 12973 } else { 12974 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12975 } 12976 unlock_user(p, arg2, arg3); 12977 } 12978 return ret; 12979 #endif 12980 12981 #ifdef TARGET_NR_mq_timedreceive 12982 case TARGET_NR_mq_timedreceive: 12983 { 12984 struct timespec ts; 12985 unsigned int prio; 12986 12987 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12988 if (arg5 != 0) { 12989 if (target_to_host_timespec(&ts, arg5)) { 12990 return -TARGET_EFAULT; 12991 } 12992 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12993 &prio, &ts)); 12994 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12995 return -TARGET_EFAULT; 12996 } 12997 } else { 12998 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12999 &prio, NULL)); 13000 } 13001 unlock_user (p, arg2, arg3); 13002 if (arg4 != 0) 13003 put_user_u32(prio, arg4); 13004 } 13005 return ret; 13006 #endif 13007 #ifdef TARGET_NR_mq_timedreceive_time64 13008 case TARGET_NR_mq_timedreceive_time64: 13009 { 13010 struct timespec ts; 13011 unsigned int prio; 13012 13013 p = lock_user(VERIFY_READ, arg2, arg3, 1); 13014 if (arg5 != 0) { 13015 if (target_to_host_timespec64(&ts, arg5)) { 13016 return -TARGET_EFAULT; 13017 } 13018 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 13019 &prio, &ts)); 13020 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 13021 return -TARGET_EFAULT; 13022 } 13023 } else { 13024 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 13025 &prio, NULL)); 13026 } 13027 unlock_user(p, arg2, arg3); 13028 if (arg4 != 0) { 13029 put_user_u32(prio, arg4); 13030 } 13031 } 13032 return ret; 13033 #endif 13034 13035 /* Not implemented for now... */ 13036 /* case TARGET_NR_mq_notify: */ 13037 /* break; */ 13038 13039 case TARGET_NR_mq_getsetattr: 13040 { 13041 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 13042 ret = 0; 13043 if (arg2 != 0) { 13044 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 13045 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 13046 &posix_mq_attr_out)); 13047 } else if (arg3 != 0) { 13048 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 13049 } 13050 if (ret == 0 && arg3 != 0) { 13051 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 13052 } 13053 } 13054 return ret; 13055 #endif 13056 13057 #ifdef CONFIG_SPLICE 13058 #ifdef TARGET_NR_tee 13059 case TARGET_NR_tee: 13060 { 13061 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 13062 } 13063 return ret; 13064 #endif 13065 #ifdef TARGET_NR_splice 13066 case TARGET_NR_splice: 13067 { 13068 loff_t loff_in, loff_out; 13069 loff_t *ploff_in = NULL, *ploff_out = NULL; 13070 if (arg2) { 13071 if (get_user_u64(loff_in, arg2)) { 13072 return -TARGET_EFAULT; 13073 } 13074 ploff_in = &loff_in; 13075 } 13076 if (arg4) { 13077 if (get_user_u64(loff_out, arg4)) { 13078 return -TARGET_EFAULT; 13079 } 13080 ploff_out = &loff_out; 13081 } 13082 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 13083 if (arg2) { 13084 if (put_user_u64(loff_in, arg2)) { 13085 return -TARGET_EFAULT; 13086 } 13087 } 13088 if (arg4) { 13089 if (put_user_u64(loff_out, arg4)) { 13090 return -TARGET_EFAULT; 13091 } 13092 } 13093 } 13094 return ret; 13095 #endif 13096 #ifdef TARGET_NR_vmsplice 13097 case TARGET_NR_vmsplice: 13098 { 13099 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 13100 if (vec != NULL) { 13101 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 13102 unlock_iovec(vec, arg2, arg3, 0); 13103 } else { 13104 ret = -host_to_target_errno(errno); 13105 } 13106 } 13107 return ret; 13108 #endif 13109 #endif /* CONFIG_SPLICE */ 13110 #ifdef CONFIG_EVENTFD 13111 #if defined(TARGET_NR_eventfd) 13112 case TARGET_NR_eventfd: 13113 ret = get_errno(eventfd(arg1, 0)); 13114 if (ret >= 0) { 13115 fd_trans_register(ret, &target_eventfd_trans); 13116 } 13117 return ret; 13118 #endif 13119 #if defined(TARGET_NR_eventfd2) 13120 case TARGET_NR_eventfd2: 13121 { 13122 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 13123 if (arg2 & TARGET_O_NONBLOCK) { 13124 host_flags |= O_NONBLOCK; 13125 } 13126 if (arg2 & TARGET_O_CLOEXEC) { 13127 host_flags |= O_CLOEXEC; 13128 } 13129 ret = get_errno(eventfd(arg1, host_flags)); 13130 if (ret >= 0) { 13131 fd_trans_register(ret, &target_eventfd_trans); 13132 } 13133 return ret; 13134 } 13135 #endif 13136 #endif /* CONFIG_EVENTFD */ 13137 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 13138 case TARGET_NR_fallocate: 13139 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 13140 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 13141 target_offset64(arg5, arg6))); 13142 #else 13143 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 13144 #endif 13145 return ret; 13146 #endif 13147 #if defined(CONFIG_SYNC_FILE_RANGE) 13148 #if defined(TARGET_NR_sync_file_range) 13149 case TARGET_NR_sync_file_range: 13150 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 13151 #if defined(TARGET_MIPS) 13152 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 13153 target_offset64(arg5, arg6), arg7)); 13154 #else 13155 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 13156 target_offset64(arg4, arg5), arg6)); 13157 #endif /* !TARGET_MIPS */ 13158 #else 13159 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 13160 #endif 13161 return ret; 13162 #endif 13163 #if defined(TARGET_NR_sync_file_range2) || \ 13164 defined(TARGET_NR_arm_sync_file_range) 13165 #if defined(TARGET_NR_sync_file_range2) 13166 case TARGET_NR_sync_file_range2: 13167 #endif 13168 #if defined(TARGET_NR_arm_sync_file_range) 13169 case TARGET_NR_arm_sync_file_range: 13170 #endif 13171 /* This is like sync_file_range but the arguments are reordered */ 13172 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 13173 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 13174 target_offset64(arg5, arg6), arg2)); 13175 #else 13176 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 13177 #endif 13178 return ret; 13179 #endif 13180 #endif 13181 #if defined(TARGET_NR_signalfd4) 13182 case TARGET_NR_signalfd4: 13183 return do_signalfd4(arg1, arg2, arg4); 13184 #endif 13185 #if defined(TARGET_NR_signalfd) 13186 case TARGET_NR_signalfd: 13187 return do_signalfd4(arg1, arg2, 0); 13188 #endif 13189 #if defined(CONFIG_EPOLL) 13190 #if defined(TARGET_NR_epoll_create) 13191 case TARGET_NR_epoll_create: 13192 return get_errno(epoll_create(arg1)); 13193 #endif 13194 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 13195 case TARGET_NR_epoll_create1: 13196 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 13197 #endif 13198 #if defined(TARGET_NR_epoll_ctl) 13199 case TARGET_NR_epoll_ctl: 13200 { 13201 struct epoll_event ep; 13202 struct epoll_event *epp = 0; 13203 if (arg4) { 13204 if (arg2 != EPOLL_CTL_DEL) { 13205 struct target_epoll_event *target_ep; 13206 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 13207 return -TARGET_EFAULT; 13208 } 13209 ep.events = tswap32(target_ep->events); 13210 /* 13211 * The epoll_data_t union is just opaque data to the kernel, 13212 * so we transfer all 64 bits across and need not worry what 13213 * actual data type it is. 13214 */ 13215 ep.data.u64 = tswap64(target_ep->data.u64); 13216 unlock_user_struct(target_ep, arg4, 0); 13217 } 13218 /* 13219 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 13220 * non-null pointer, even though this argument is ignored. 13221 * 13222 */ 13223 epp = &ep; 13224 } 13225 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 13226 } 13227 #endif 13228 13229 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 13230 #if defined(TARGET_NR_epoll_wait) 13231 case TARGET_NR_epoll_wait: 13232 #endif 13233 #if defined(TARGET_NR_epoll_pwait) 13234 case TARGET_NR_epoll_pwait: 13235 #endif 13236 { 13237 struct target_epoll_event *target_ep; 13238 struct epoll_event *ep; 13239 int epfd = arg1; 13240 int maxevents = arg3; 13241 int timeout = arg4; 13242 13243 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 13244 return -TARGET_EINVAL; 13245 } 13246 13247 target_ep = lock_user(VERIFY_WRITE, arg2, 13248 maxevents * sizeof(struct target_epoll_event), 1); 13249 if (!target_ep) { 13250 return -TARGET_EFAULT; 13251 } 13252 13253 ep = g_try_new(struct epoll_event, maxevents); 13254 if (!ep) { 13255 unlock_user(target_ep, arg2, 0); 13256 return -TARGET_ENOMEM; 13257 } 13258 13259 switch (num) { 13260 #if defined(TARGET_NR_epoll_pwait) 13261 case TARGET_NR_epoll_pwait: 13262 { 13263 sigset_t *set = NULL; 13264 13265 if (arg5) { 13266 ret = process_sigsuspend_mask(&set, arg5, arg6); 13267 if (ret != 0) { 13268 break; 13269 } 13270 } 13271 13272 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 13273 set, SIGSET_T_SIZE)); 13274 13275 if (set) { 13276 finish_sigsuspend_mask(ret); 13277 } 13278 break; 13279 } 13280 #endif 13281 #if defined(TARGET_NR_epoll_wait) 13282 case TARGET_NR_epoll_wait: 13283 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 13284 NULL, 0)); 13285 break; 13286 #endif 13287 default: 13288 ret = -TARGET_ENOSYS; 13289 } 13290 if (!is_error(ret)) { 13291 int i; 13292 for (i = 0; i < ret; i++) { 13293 target_ep[i].events = tswap32(ep[i].events); 13294 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 13295 } 13296 unlock_user(target_ep, arg2, 13297 ret * sizeof(struct target_epoll_event)); 13298 } else { 13299 unlock_user(target_ep, arg2, 0); 13300 } 13301 g_free(ep); 13302 return ret; 13303 } 13304 #endif 13305 #endif 13306 #ifdef TARGET_NR_prlimit64 13307 case TARGET_NR_prlimit64: 13308 { 13309 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 13310 struct target_rlimit64 *target_rnew, *target_rold; 13311 struct host_rlimit64 rnew, rold, *rnewp = 0; 13312 int resource = target_to_host_resource(arg2); 13313 13314 if (arg3 && (resource != RLIMIT_AS && 13315 resource != RLIMIT_DATA && 13316 resource != RLIMIT_STACK)) { 13317 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 13318 return -TARGET_EFAULT; 13319 } 13320 __get_user(rnew.rlim_cur, &target_rnew->rlim_cur); 13321 __get_user(rnew.rlim_max, &target_rnew->rlim_max); 13322 unlock_user_struct(target_rnew, arg3, 0); 13323 rnewp = &rnew; 13324 } 13325 13326 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 13327 if (!is_error(ret) && arg4) { 13328 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 13329 return -TARGET_EFAULT; 13330 } 13331 __put_user(rold.rlim_cur, &target_rold->rlim_cur); 13332 __put_user(rold.rlim_max, &target_rold->rlim_max); 13333 unlock_user_struct(target_rold, arg4, 1); 13334 } 13335 return ret; 13336 } 13337 #endif 13338 #ifdef TARGET_NR_gethostname 13339 case TARGET_NR_gethostname: 13340 { 13341 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 13342 if (name) { 13343 ret = get_errno(gethostname(name, arg2)); 13344 unlock_user(name, arg1, arg2); 13345 } else { 13346 ret = -TARGET_EFAULT; 13347 } 13348 return ret; 13349 } 13350 #endif 13351 #ifdef TARGET_NR_atomic_cmpxchg_32 13352 case TARGET_NR_atomic_cmpxchg_32: 13353 { 13354 /* should use start_exclusive from main.c */ 13355 abi_ulong mem_value; 13356 if (get_user_u32(mem_value, arg6)) { 13357 target_siginfo_t info; 13358 info.si_signo = SIGSEGV; 13359 info.si_errno = 0; 13360 info.si_code = TARGET_SEGV_MAPERR; 13361 info._sifields._sigfault._addr = arg6; 13362 queue_signal(cpu_env, info.si_signo, QEMU_SI_FAULT, &info); 13363 ret = 0xdeadbeef; 13364 13365 } 13366 if (mem_value == arg2) 13367 put_user_u32(arg1, arg6); 13368 return mem_value; 13369 } 13370 #endif 13371 #ifdef TARGET_NR_atomic_barrier 13372 case TARGET_NR_atomic_barrier: 13373 /* Like the kernel implementation and the 13374 qemu arm barrier, no-op this? */ 13375 return 0; 13376 #endif 13377 13378 #ifdef TARGET_NR_timer_create 13379 case TARGET_NR_timer_create: 13380 { 13381 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 13382 13383 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 13384 13385 int clkid = arg1; 13386 int timer_index = next_free_host_timer(); 13387 13388 if (timer_index < 0) { 13389 ret = -TARGET_EAGAIN; 13390 } else { 13391 timer_t *phtimer = g_posix_timers + timer_index; 13392 13393 if (arg2) { 13394 phost_sevp = &host_sevp; 13395 ret = target_to_host_sigevent(phost_sevp, arg2); 13396 if (ret != 0) { 13397 free_host_timer_slot(timer_index); 13398 return ret; 13399 } 13400 } 13401 13402 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 13403 if (ret) { 13404 free_host_timer_slot(timer_index); 13405 } else { 13406 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 13407 timer_delete(*phtimer); 13408 free_host_timer_slot(timer_index); 13409 return -TARGET_EFAULT; 13410 } 13411 } 13412 } 13413 return ret; 13414 } 13415 #endif 13416 13417 #ifdef TARGET_NR_timer_settime 13418 case TARGET_NR_timer_settime: 13419 { 13420 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 13421 * struct itimerspec * old_value */ 13422 target_timer_t timerid = get_timer_id(arg1); 13423 13424 if (timerid < 0) { 13425 ret = timerid; 13426 } else if (arg3 == 0) { 13427 ret = -TARGET_EINVAL; 13428 } else { 13429 timer_t htimer = g_posix_timers[timerid]; 13430 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 13431 13432 if (target_to_host_itimerspec(&hspec_new, arg3)) { 13433 return -TARGET_EFAULT; 13434 } 13435 ret = get_errno( 13436 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 13437 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 13438 return -TARGET_EFAULT; 13439 } 13440 } 13441 return ret; 13442 } 13443 #endif 13444 13445 #ifdef TARGET_NR_timer_settime64 13446 case TARGET_NR_timer_settime64: 13447 { 13448 target_timer_t timerid = get_timer_id(arg1); 13449 13450 if (timerid < 0) { 13451 ret = timerid; 13452 } else if (arg3 == 0) { 13453 ret = -TARGET_EINVAL; 13454 } else { 13455 timer_t htimer = g_posix_timers[timerid]; 13456 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 13457 13458 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 13459 return -TARGET_EFAULT; 13460 } 13461 ret = get_errno( 13462 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 13463 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 13464 return -TARGET_EFAULT; 13465 } 13466 } 13467 return ret; 13468 } 13469 #endif 13470 13471 #ifdef TARGET_NR_timer_gettime 13472 case TARGET_NR_timer_gettime: 13473 { 13474 /* args: timer_t timerid, struct itimerspec *curr_value */ 13475 target_timer_t timerid = get_timer_id(arg1); 13476 13477 if (timerid < 0) { 13478 ret = timerid; 13479 } else if (!arg2) { 13480 ret = -TARGET_EFAULT; 13481 } else { 13482 timer_t htimer = g_posix_timers[timerid]; 13483 struct itimerspec hspec; 13484 ret = get_errno(timer_gettime(htimer, &hspec)); 13485 13486 if (host_to_target_itimerspec(arg2, &hspec)) { 13487 ret = -TARGET_EFAULT; 13488 } 13489 } 13490 return ret; 13491 } 13492 #endif 13493 13494 #ifdef TARGET_NR_timer_gettime64 13495 case TARGET_NR_timer_gettime64: 13496 { 13497 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 13498 target_timer_t timerid = get_timer_id(arg1); 13499 13500 if (timerid < 0) { 13501 ret = timerid; 13502 } else if (!arg2) { 13503 ret = -TARGET_EFAULT; 13504 } else { 13505 timer_t htimer = g_posix_timers[timerid]; 13506 struct itimerspec hspec; 13507 ret = get_errno(timer_gettime(htimer, &hspec)); 13508 13509 if (host_to_target_itimerspec64(arg2, &hspec)) { 13510 ret = -TARGET_EFAULT; 13511 } 13512 } 13513 return ret; 13514 } 13515 #endif 13516 13517 #ifdef TARGET_NR_timer_getoverrun 13518 case TARGET_NR_timer_getoverrun: 13519 { 13520 /* args: timer_t timerid */ 13521 target_timer_t timerid = get_timer_id(arg1); 13522 13523 if (timerid < 0) { 13524 ret = timerid; 13525 } else { 13526 timer_t htimer = g_posix_timers[timerid]; 13527 ret = get_errno(timer_getoverrun(htimer)); 13528 } 13529 return ret; 13530 } 13531 #endif 13532 13533 #ifdef TARGET_NR_timer_delete 13534 case TARGET_NR_timer_delete: 13535 { 13536 /* args: timer_t timerid */ 13537 target_timer_t timerid = get_timer_id(arg1); 13538 13539 if (timerid < 0) { 13540 ret = timerid; 13541 } else { 13542 timer_t htimer = g_posix_timers[timerid]; 13543 ret = get_errno(timer_delete(htimer)); 13544 free_host_timer_slot(timerid); 13545 } 13546 return ret; 13547 } 13548 #endif 13549 13550 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 13551 case TARGET_NR_timerfd_create: 13552 ret = get_errno(timerfd_create(arg1, 13553 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 13554 if (ret >= 0) { 13555 fd_trans_register(ret, &target_timerfd_trans); 13556 } 13557 return ret; 13558 #endif 13559 13560 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 13561 case TARGET_NR_timerfd_gettime: 13562 { 13563 struct itimerspec its_curr; 13564 13565 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13566 13567 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 13568 return -TARGET_EFAULT; 13569 } 13570 } 13571 return ret; 13572 #endif 13573 13574 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 13575 case TARGET_NR_timerfd_gettime64: 13576 { 13577 struct itimerspec its_curr; 13578 13579 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13580 13581 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 13582 return -TARGET_EFAULT; 13583 } 13584 } 13585 return ret; 13586 #endif 13587 13588 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 13589 case TARGET_NR_timerfd_settime: 13590 { 13591 struct itimerspec its_new, its_old, *p_new; 13592 13593 if (arg3) { 13594 if (target_to_host_itimerspec(&its_new, arg3)) { 13595 return -TARGET_EFAULT; 13596 } 13597 p_new = &its_new; 13598 } else { 13599 p_new = NULL; 13600 } 13601 13602 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13603 13604 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 13605 return -TARGET_EFAULT; 13606 } 13607 } 13608 return ret; 13609 #endif 13610 13611 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 13612 case TARGET_NR_timerfd_settime64: 13613 { 13614 struct itimerspec its_new, its_old, *p_new; 13615 13616 if (arg3) { 13617 if (target_to_host_itimerspec64(&its_new, arg3)) { 13618 return -TARGET_EFAULT; 13619 } 13620 p_new = &its_new; 13621 } else { 13622 p_new = NULL; 13623 } 13624 13625 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13626 13627 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 13628 return -TARGET_EFAULT; 13629 } 13630 } 13631 return ret; 13632 #endif 13633 13634 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 13635 case TARGET_NR_ioprio_get: 13636 return get_errno(ioprio_get(arg1, arg2)); 13637 #endif 13638 13639 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 13640 case TARGET_NR_ioprio_set: 13641 return get_errno(ioprio_set(arg1, arg2, arg3)); 13642 #endif 13643 13644 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 13645 case TARGET_NR_setns: 13646 return get_errno(setns(arg1, arg2)); 13647 #endif 13648 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 13649 case TARGET_NR_unshare: 13650 return get_errno(unshare(arg1)); 13651 #endif 13652 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 13653 case TARGET_NR_kcmp: 13654 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 13655 #endif 13656 #ifdef TARGET_NR_swapcontext 13657 case TARGET_NR_swapcontext: 13658 /* PowerPC specific. */ 13659 return do_swapcontext(cpu_env, arg1, arg2, arg3); 13660 #endif 13661 #ifdef TARGET_NR_memfd_create 13662 case TARGET_NR_memfd_create: 13663 p = lock_user_string(arg1); 13664 if (!p) { 13665 return -TARGET_EFAULT; 13666 } 13667 ret = get_errno(memfd_create(p, arg2)); 13668 fd_trans_unregister(ret); 13669 unlock_user(p, arg1, 0); 13670 return ret; 13671 #endif 13672 #if defined TARGET_NR_membarrier && defined __NR_membarrier 13673 case TARGET_NR_membarrier: 13674 return get_errno(membarrier(arg1, arg2)); 13675 #endif 13676 13677 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 13678 case TARGET_NR_copy_file_range: 13679 { 13680 loff_t inoff, outoff; 13681 loff_t *pinoff = NULL, *poutoff = NULL; 13682 13683 if (arg2) { 13684 if (get_user_u64(inoff, arg2)) { 13685 return -TARGET_EFAULT; 13686 } 13687 pinoff = &inoff; 13688 } 13689 if (arg4) { 13690 if (get_user_u64(outoff, arg4)) { 13691 return -TARGET_EFAULT; 13692 } 13693 poutoff = &outoff; 13694 } 13695 /* Do not sign-extend the count parameter. */ 13696 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 13697 (abi_ulong)arg5, arg6)); 13698 if (!is_error(ret) && ret > 0) { 13699 if (arg2) { 13700 if (put_user_u64(inoff, arg2)) { 13701 return -TARGET_EFAULT; 13702 } 13703 } 13704 if (arg4) { 13705 if (put_user_u64(outoff, arg4)) { 13706 return -TARGET_EFAULT; 13707 } 13708 } 13709 } 13710 } 13711 return ret; 13712 #endif 13713 13714 #if defined(TARGET_NR_pivot_root) 13715 case TARGET_NR_pivot_root: 13716 { 13717 void *p2; 13718 p = lock_user_string(arg1); /* new_root */ 13719 p2 = lock_user_string(arg2); /* put_old */ 13720 if (!p || !p2) { 13721 ret = -TARGET_EFAULT; 13722 } else { 13723 ret = get_errno(pivot_root(p, p2)); 13724 } 13725 unlock_user(p2, arg2, 0); 13726 unlock_user(p, arg1, 0); 13727 } 13728 return ret; 13729 #endif 13730 13731 #if defined(TARGET_NR_riscv_hwprobe) 13732 case TARGET_NR_riscv_hwprobe: 13733 return do_riscv_hwprobe(cpu_env, arg1, arg2, arg3, arg4, arg5); 13734 #endif 13735 13736 default: 13737 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 13738 return -TARGET_ENOSYS; 13739 } 13740 return ret; 13741 } 13742 13743 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1, 13744 abi_long arg2, abi_long arg3, abi_long arg4, 13745 abi_long arg5, abi_long arg6, abi_long arg7, 13746 abi_long arg8) 13747 { 13748 CPUState *cpu = env_cpu(cpu_env); 13749 abi_long ret; 13750 13751 #ifdef DEBUG_ERESTARTSYS 13752 /* Debug-only code for exercising the syscall-restart code paths 13753 * in the per-architecture cpu main loops: restart every syscall 13754 * the guest makes once before letting it through. 13755 */ 13756 { 13757 static bool flag; 13758 flag = !flag; 13759 if (flag) { 13760 return -QEMU_ERESTARTSYS; 13761 } 13762 } 13763 #endif 13764 13765 record_syscall_start(cpu, num, arg1, 13766 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13767 13768 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13769 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13770 } 13771 13772 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13773 arg5, arg6, arg7, arg8); 13774 13775 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13776 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13777 arg3, arg4, arg5, arg6); 13778 } 13779 13780 record_syscall_return(cpu, num, ret); 13781 return ret; 13782 } 13783