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 <elf.h> 26 #include <endian.h> 27 #include <grp.h> 28 #include <sys/ipc.h> 29 #include <sys/msg.h> 30 #include <sys/wait.h> 31 #include <sys/mount.h> 32 #include <sys/file.h> 33 #include <sys/fsuid.h> 34 #include <sys/personality.h> 35 #include <sys/prctl.h> 36 #include <sys/resource.h> 37 #include <sys/swap.h> 38 #include <linux/capability.h> 39 #include <sched.h> 40 #include <sys/timex.h> 41 #include <sys/socket.h> 42 #include <linux/sockios.h> 43 #include <sys/un.h> 44 #include <sys/uio.h> 45 #include <poll.h> 46 #include <sys/times.h> 47 #include <sys/shm.h> 48 #include <sys/sem.h> 49 #include <sys/statfs.h> 50 #include <utime.h> 51 #include <sys/sysinfo.h> 52 #include <sys/signalfd.h> 53 //#include <sys/user.h> 54 #include <netinet/in.h> 55 #include <netinet/ip.h> 56 #include <netinet/tcp.h> 57 #include <netinet/udp.h> 58 #include <linux/wireless.h> 59 #include <linux/icmp.h> 60 #include <linux/icmpv6.h> 61 #include <linux/if_tun.h> 62 #include <linux/in6.h> 63 #include <linux/errqueue.h> 64 #include <linux/random.h> 65 #ifdef CONFIG_TIMERFD 66 #include <sys/timerfd.h> 67 #endif 68 #ifdef CONFIG_EVENTFD 69 #include <sys/eventfd.h> 70 #endif 71 #ifdef CONFIG_EPOLL 72 #include <sys/epoll.h> 73 #endif 74 #ifdef CONFIG_ATTR 75 #include "qemu/xattr.h" 76 #endif 77 #ifdef CONFIG_SENDFILE 78 #include <sys/sendfile.h> 79 #endif 80 #ifdef HAVE_SYS_KCOV_H 81 #include <sys/kcov.h> 82 #endif 83 84 #define termios host_termios 85 #define winsize host_winsize 86 #define termio host_termio 87 #define sgttyb host_sgttyb /* same as target */ 88 #define tchars host_tchars /* same as target */ 89 #define ltchars host_ltchars /* same as target */ 90 91 #include <linux/termios.h> 92 #include <linux/unistd.h> 93 #include <linux/cdrom.h> 94 #include <linux/hdreg.h> 95 #include <linux/soundcard.h> 96 #include <linux/kd.h> 97 #include <linux/mtio.h> 98 99 #ifdef HAVE_SYS_MOUNT_FSCONFIG 100 /* 101 * glibc >= 2.36 linux/mount.h conflicts with sys/mount.h, 102 * which in turn prevents use of linux/fs.h. So we have to 103 * define the constants ourselves for now. 104 */ 105 #define FS_IOC_GETFLAGS _IOR('f', 1, long) 106 #define FS_IOC_SETFLAGS _IOW('f', 2, long) 107 #define FS_IOC_GETVERSION _IOR('v', 1, long) 108 #define FS_IOC_SETVERSION _IOW('v', 2, long) 109 #define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap) 110 #define FS_IOC32_GETFLAGS _IOR('f', 1, int) 111 #define FS_IOC32_SETFLAGS _IOW('f', 2, int) 112 #define FS_IOC32_GETVERSION _IOR('v', 1, int) 113 #define FS_IOC32_SETVERSION _IOW('v', 2, int) 114 #else 115 #include <linux/fs.h> 116 #endif 117 #include <linux/fd.h> 118 #if defined(CONFIG_FIEMAP) 119 #include <linux/fiemap.h> 120 #endif 121 #include <linux/fb.h> 122 #if defined(CONFIG_USBFS) 123 #include <linux/usbdevice_fs.h> 124 #include <linux/usb/ch9.h> 125 #endif 126 #include <linux/vt.h> 127 #include <linux/dm-ioctl.h> 128 #include <linux/reboot.h> 129 #include <linux/route.h> 130 #include <linux/filter.h> 131 #include <linux/blkpg.h> 132 #include <netpacket/packet.h> 133 #include <linux/netlink.h> 134 #include <linux/if_alg.h> 135 #include <linux/rtc.h> 136 #include <sound/asound.h> 137 #ifdef HAVE_BTRFS_H 138 #include <linux/btrfs.h> 139 #endif 140 #ifdef HAVE_DRM_H 141 #include <libdrm/drm.h> 142 #include <libdrm/i915_drm.h> 143 #endif 144 #include "linux_loop.h" 145 #include "uname.h" 146 147 #include "qemu.h" 148 #include "user-internals.h" 149 #include "strace.h" 150 #include "signal-common.h" 151 #include "loader.h" 152 #include "user-mmap.h" 153 #include "user/safe-syscall.h" 154 #include "qemu/guest-random.h" 155 #include "qemu/selfmap.h" 156 #include "user/syscall-trace.h" 157 #include "special-errno.h" 158 #include "qapi/error.h" 159 #include "fd-trans.h" 160 #include "tcg/tcg.h" 161 162 #ifndef CLONE_IO 163 #define CLONE_IO 0x80000000 /* Clone io context */ 164 #endif 165 166 /* We can't directly call the host clone syscall, because this will 167 * badly confuse libc (breaking mutexes, for example). So we must 168 * divide clone flags into: 169 * * flag combinations that look like pthread_create() 170 * * flag combinations that look like fork() 171 * * flags we can implement within QEMU itself 172 * * flags we can't support and will return an error for 173 */ 174 /* For thread creation, all these flags must be present; for 175 * fork, none must be present. 176 */ 177 #define CLONE_THREAD_FLAGS \ 178 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 179 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 180 181 /* These flags are ignored: 182 * CLONE_DETACHED is now ignored by the kernel; 183 * CLONE_IO is just an optimisation hint to the I/O scheduler 184 */ 185 #define CLONE_IGNORED_FLAGS \ 186 (CLONE_DETACHED | CLONE_IO) 187 188 /* Flags for fork which we can implement within QEMU itself */ 189 #define CLONE_OPTIONAL_FORK_FLAGS \ 190 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 191 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 192 193 /* Flags for thread creation which we can implement within QEMU itself */ 194 #define CLONE_OPTIONAL_THREAD_FLAGS \ 195 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 196 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 197 198 #define CLONE_INVALID_FORK_FLAGS \ 199 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 200 201 #define CLONE_INVALID_THREAD_FLAGS \ 202 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 203 CLONE_IGNORED_FLAGS)) 204 205 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 206 * have almost all been allocated. We cannot support any of 207 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 208 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 209 * The checks against the invalid thread masks above will catch these. 210 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 211 */ 212 213 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 214 * once. This exercises the codepaths for restart. 215 */ 216 //#define DEBUG_ERESTARTSYS 217 218 //#include <linux/msdos_fs.h> 219 #define VFAT_IOCTL_READDIR_BOTH \ 220 _IOC(_IOC_READ, 'r', 1, (sizeof(struct linux_dirent) + 256) * 2) 221 #define VFAT_IOCTL_READDIR_SHORT \ 222 _IOC(_IOC_READ, 'r', 2, (sizeof(struct linux_dirent) + 256) * 2) 223 224 #undef _syscall0 225 #undef _syscall1 226 #undef _syscall2 227 #undef _syscall3 228 #undef _syscall4 229 #undef _syscall5 230 #undef _syscall6 231 232 #define _syscall0(type,name) \ 233 static type name (void) \ 234 { \ 235 return syscall(__NR_##name); \ 236 } 237 238 #define _syscall1(type,name,type1,arg1) \ 239 static type name (type1 arg1) \ 240 { \ 241 return syscall(__NR_##name, arg1); \ 242 } 243 244 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 245 static type name (type1 arg1,type2 arg2) \ 246 { \ 247 return syscall(__NR_##name, arg1, arg2); \ 248 } 249 250 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 251 static type name (type1 arg1,type2 arg2,type3 arg3) \ 252 { \ 253 return syscall(__NR_##name, arg1, arg2, arg3); \ 254 } 255 256 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 257 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 258 { \ 259 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 260 } 261 262 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 263 type5,arg5) \ 264 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 265 { \ 266 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 267 } 268 269 270 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 271 type5,arg5,type6,arg6) \ 272 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 273 type6 arg6) \ 274 { \ 275 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 276 } 277 278 279 #define __NR_sys_uname __NR_uname 280 #define __NR_sys_getcwd1 __NR_getcwd 281 #define __NR_sys_getdents __NR_getdents 282 #define __NR_sys_getdents64 __NR_getdents64 283 #define __NR_sys_getpriority __NR_getpriority 284 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 285 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 286 #define __NR_sys_syslog __NR_syslog 287 #if defined(__NR_futex) 288 # define __NR_sys_futex __NR_futex 289 #endif 290 #if defined(__NR_futex_time64) 291 # define __NR_sys_futex_time64 __NR_futex_time64 292 #endif 293 #define __NR_sys_statx __NR_statx 294 295 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__) 296 #define __NR__llseek __NR_lseek 297 #endif 298 299 /* Newer kernel ports have llseek() instead of _llseek() */ 300 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 301 #define TARGET_NR__llseek TARGET_NR_llseek 302 #endif 303 304 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */ 305 #ifndef TARGET_O_NONBLOCK_MASK 306 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK 307 #endif 308 309 #define __NR_sys_gettid __NR_gettid 310 _syscall0(int, sys_gettid) 311 312 /* For the 64-bit guest on 32-bit host case we must emulate 313 * getdents using getdents64, because otherwise the host 314 * might hand us back more dirent records than we can fit 315 * into the guest buffer after structure format conversion. 316 * Otherwise we emulate getdents with getdents if the host has it. 317 */ 318 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS 319 #define EMULATE_GETDENTS_WITH_GETDENTS 320 #endif 321 322 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS) 323 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 324 #endif 325 #if (defined(TARGET_NR_getdents) && \ 326 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \ 327 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 328 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 329 #endif 330 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 331 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 332 loff_t *, res, uint, wh); 333 #endif 334 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 335 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 336 siginfo_t *, uinfo) 337 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 338 #ifdef __NR_exit_group 339 _syscall1(int,exit_group,int,error_code) 340 #endif 341 #if defined(__NR_futex) 342 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 343 const struct timespec *,timeout,int *,uaddr2,int,val3) 344 #endif 345 #if defined(__NR_futex_time64) 346 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, 347 const struct timespec *,timeout,int *,uaddr2,int,val3) 348 #endif 349 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 350 _syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags); 351 #endif 352 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 353 _syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info, 354 unsigned int, flags); 355 #endif 356 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 357 _syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags); 358 #endif 359 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 360 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 361 unsigned long *, user_mask_ptr); 362 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 363 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 364 unsigned long *, user_mask_ptr); 365 /* sched_attr is not defined in glibc */ 366 struct sched_attr { 367 uint32_t size; 368 uint32_t sched_policy; 369 uint64_t sched_flags; 370 int32_t sched_nice; 371 uint32_t sched_priority; 372 uint64_t sched_runtime; 373 uint64_t sched_deadline; 374 uint64_t sched_period; 375 uint32_t sched_util_min; 376 uint32_t sched_util_max; 377 }; 378 #define __NR_sys_sched_getattr __NR_sched_getattr 379 _syscall4(int, sys_sched_getattr, pid_t, pid, struct sched_attr *, attr, 380 unsigned int, size, unsigned int, flags); 381 #define __NR_sys_sched_setattr __NR_sched_setattr 382 _syscall3(int, sys_sched_setattr, pid_t, pid, struct sched_attr *, attr, 383 unsigned int, flags); 384 #define __NR_sys_sched_getscheduler __NR_sched_getscheduler 385 _syscall1(int, sys_sched_getscheduler, pid_t, pid); 386 #define __NR_sys_sched_setscheduler __NR_sched_setscheduler 387 _syscall3(int, sys_sched_setscheduler, pid_t, pid, int, policy, 388 const struct sched_param *, param); 389 #define __NR_sys_sched_getparam __NR_sched_getparam 390 _syscall2(int, sys_sched_getparam, pid_t, pid, 391 struct sched_param *, param); 392 #define __NR_sys_sched_setparam __NR_sched_setparam 393 _syscall2(int, sys_sched_setparam, pid_t, pid, 394 const struct sched_param *, param); 395 #define __NR_sys_getcpu __NR_getcpu 396 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); 397 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 398 void *, arg); 399 _syscall2(int, capget, struct __user_cap_header_struct *, header, 400 struct __user_cap_data_struct *, data); 401 _syscall2(int, capset, struct __user_cap_header_struct *, header, 402 struct __user_cap_data_struct *, data); 403 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 404 _syscall2(int, ioprio_get, int, which, int, who) 405 #endif 406 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 407 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 408 #endif 409 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 410 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 411 #endif 412 413 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 414 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 415 unsigned long, idx1, unsigned long, idx2) 416 #endif 417 418 /* 419 * It is assumed that struct statx is architecture independent. 420 */ 421 #if defined(TARGET_NR_statx) && defined(__NR_statx) 422 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags, 423 unsigned int, mask, struct target_statx *, statxbuf) 424 #endif 425 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) 426 _syscall2(int, membarrier, int, cmd, int, flags) 427 #endif 428 429 static const bitmask_transtbl fcntl_flags_tbl[] = { 430 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 431 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 432 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 433 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 434 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 435 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 436 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 437 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 438 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 439 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 440 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 441 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 442 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 443 #if defined(O_DIRECT) 444 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 445 #endif 446 #if defined(O_NOATIME) 447 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 448 #endif 449 #if defined(O_CLOEXEC) 450 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 451 #endif 452 #if defined(O_PATH) 453 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 454 #endif 455 #if defined(O_TMPFILE) 456 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE }, 457 #endif 458 /* Don't terminate the list prematurely on 64-bit host+guest. */ 459 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 460 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 461 #endif 462 { 0, 0, 0, 0 } 463 }; 464 465 _syscall2(int, sys_getcwd1, char *, buf, size_t, size) 466 467 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64) 468 #if defined(__NR_utimensat) 469 #define __NR_sys_utimensat __NR_utimensat 470 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 471 const struct timespec *,tsp,int,flags) 472 #else 473 static int sys_utimensat(int dirfd, const char *pathname, 474 const struct timespec times[2], int flags) 475 { 476 errno = ENOSYS; 477 return -1; 478 } 479 #endif 480 #endif /* TARGET_NR_utimensat */ 481 482 #ifdef TARGET_NR_renameat2 483 #if defined(__NR_renameat2) 484 #define __NR_sys_renameat2 __NR_renameat2 485 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, 486 const char *, new, unsigned int, flags) 487 #else 488 static int sys_renameat2(int oldfd, const char *old, 489 int newfd, const char *new, int flags) 490 { 491 if (flags == 0) { 492 return renameat(oldfd, old, newfd, new); 493 } 494 errno = ENOSYS; 495 return -1; 496 } 497 #endif 498 #endif /* TARGET_NR_renameat2 */ 499 500 #ifdef CONFIG_INOTIFY 501 #include <sys/inotify.h> 502 #else 503 /* Userspace can usually survive runtime without inotify */ 504 #undef TARGET_NR_inotify_init 505 #undef TARGET_NR_inotify_init1 506 #undef TARGET_NR_inotify_add_watch 507 #undef TARGET_NR_inotify_rm_watch 508 #endif /* CONFIG_INOTIFY */ 509 510 #if defined(TARGET_NR_prlimit64) 511 #ifndef __NR_prlimit64 512 # define __NR_prlimit64 -1 513 #endif 514 #define __NR_sys_prlimit64 __NR_prlimit64 515 /* The glibc rlimit structure may not be that used by the underlying syscall */ 516 struct host_rlimit64 { 517 uint64_t rlim_cur; 518 uint64_t rlim_max; 519 }; 520 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 521 const struct host_rlimit64 *, new_limit, 522 struct host_rlimit64 *, old_limit) 523 #endif 524 525 526 #if defined(TARGET_NR_timer_create) 527 /* Maximum of 32 active POSIX timers allowed at any one time. */ 528 #define GUEST_TIMER_MAX 32 529 static timer_t g_posix_timers[GUEST_TIMER_MAX]; 530 static int g_posix_timer_allocated[GUEST_TIMER_MAX]; 531 532 static inline int next_free_host_timer(void) 533 { 534 int k; 535 for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) { 536 if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) { 537 return k; 538 } 539 } 540 return -1; 541 } 542 543 static inline void free_host_timer_slot(int id) 544 { 545 qatomic_store_release(g_posix_timer_allocated + id, 0); 546 } 547 #endif 548 549 static inline int host_to_target_errno(int host_errno) 550 { 551 switch (host_errno) { 552 #define E(X) case X: return TARGET_##X; 553 #include "errnos.c.inc" 554 #undef E 555 default: 556 return host_errno; 557 } 558 } 559 560 static inline int target_to_host_errno(int target_errno) 561 { 562 switch (target_errno) { 563 #define E(X) case TARGET_##X: return X; 564 #include "errnos.c.inc" 565 #undef E 566 default: 567 return target_errno; 568 } 569 } 570 571 abi_long get_errno(abi_long ret) 572 { 573 if (ret == -1) 574 return -host_to_target_errno(errno); 575 else 576 return ret; 577 } 578 579 const char *target_strerror(int err) 580 { 581 if (err == QEMU_ERESTARTSYS) { 582 return "To be restarted"; 583 } 584 if (err == QEMU_ESIGRETURN) { 585 return "Successful exit from sigreturn"; 586 } 587 588 return strerror(target_to_host_errno(err)); 589 } 590 591 static int check_zeroed_user(abi_long addr, size_t ksize, size_t usize) 592 { 593 int i; 594 uint8_t b; 595 if (usize <= ksize) { 596 return 1; 597 } 598 for (i = ksize; i < usize; i++) { 599 if (get_user_u8(b, addr + i)) { 600 return -TARGET_EFAULT; 601 } 602 if (b != 0) { 603 return 0; 604 } 605 } 606 return 1; 607 } 608 609 #define safe_syscall0(type, name) \ 610 static type safe_##name(void) \ 611 { \ 612 return safe_syscall(__NR_##name); \ 613 } 614 615 #define safe_syscall1(type, name, type1, arg1) \ 616 static type safe_##name(type1 arg1) \ 617 { \ 618 return safe_syscall(__NR_##name, arg1); \ 619 } 620 621 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 622 static type safe_##name(type1 arg1, type2 arg2) \ 623 { \ 624 return safe_syscall(__NR_##name, arg1, arg2); \ 625 } 626 627 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 628 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 629 { \ 630 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 631 } 632 633 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 634 type4, arg4) \ 635 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 636 { \ 637 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 638 } 639 640 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 641 type4, arg4, type5, arg5) \ 642 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 643 type5 arg5) \ 644 { \ 645 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 646 } 647 648 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 649 type4, arg4, type5, arg5, type6, arg6) \ 650 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 651 type5 arg5, type6 arg6) \ 652 { \ 653 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 654 } 655 656 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 657 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 658 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 659 int, flags, mode_t, mode) 660 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) 661 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 662 struct rusage *, rusage) 663 #endif 664 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 665 int, options, struct rusage *, rusage) 666 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 667 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 668 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 669 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 670 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 671 #endif 672 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64) 673 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 674 struct timespec *, tsp, const sigset_t *, sigmask, 675 size_t, sigsetsize) 676 #endif 677 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 678 int, maxevents, int, timeout, const sigset_t *, sigmask, 679 size_t, sigsetsize) 680 #if defined(__NR_futex) 681 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 682 const struct timespec *,timeout,int *,uaddr2,int,val3) 683 #endif 684 #if defined(__NR_futex_time64) 685 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \ 686 const struct timespec *,timeout,int *,uaddr2,int,val3) 687 #endif 688 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 689 safe_syscall2(int, kill, pid_t, pid, int, sig) 690 safe_syscall2(int, tkill, int, tid, int, sig) 691 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 692 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 693 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 694 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 695 unsigned long, pos_l, unsigned long, pos_h) 696 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 697 unsigned long, pos_l, unsigned long, pos_h) 698 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 699 socklen_t, addrlen) 700 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 701 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 702 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 703 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 704 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 705 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 706 safe_syscall2(int, flock, int, fd, int, operation) 707 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64) 708 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 709 const struct timespec *, uts, size_t, sigsetsize) 710 #endif 711 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 712 int, flags) 713 #if defined(TARGET_NR_nanosleep) 714 safe_syscall2(int, nanosleep, const struct timespec *, req, 715 struct timespec *, rem) 716 #endif 717 #if defined(TARGET_NR_clock_nanosleep) || \ 718 defined(TARGET_NR_clock_nanosleep_time64) 719 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 720 const struct timespec *, req, struct timespec *, rem) 721 #endif 722 #ifdef __NR_ipc 723 #ifdef __s390x__ 724 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third, 725 void *, ptr) 726 #else 727 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 728 void *, ptr, long, fifth) 729 #endif 730 #endif 731 #ifdef __NR_msgsnd 732 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 733 int, flags) 734 #endif 735 #ifdef __NR_msgrcv 736 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 737 long, msgtype, int, flags) 738 #endif 739 #ifdef __NR_semtimedop 740 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 741 unsigned, nsops, const struct timespec *, timeout) 742 #endif 743 #if defined(TARGET_NR_mq_timedsend) || \ 744 defined(TARGET_NR_mq_timedsend_time64) 745 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 746 size_t, len, unsigned, prio, const struct timespec *, timeout) 747 #endif 748 #if defined(TARGET_NR_mq_timedreceive) || \ 749 defined(TARGET_NR_mq_timedreceive_time64) 750 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 751 size_t, len, unsigned *, prio, const struct timespec *, timeout) 752 #endif 753 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 754 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff, 755 int, outfd, loff_t *, poutoff, size_t, length, 756 unsigned int, flags) 757 #endif 758 759 /* We do ioctl like this rather than via safe_syscall3 to preserve the 760 * "third argument might be integer or pointer or not present" behaviour of 761 * the libc function. 762 */ 763 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 764 /* Similarly for fcntl. Note that callers must always: 765 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 766 * use the flock64 struct rather than unsuffixed flock 767 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 768 */ 769 #ifdef __NR_fcntl64 770 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 771 #else 772 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 773 #endif 774 775 static inline int host_to_target_sock_type(int host_type) 776 { 777 int target_type; 778 779 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 780 case SOCK_DGRAM: 781 target_type = TARGET_SOCK_DGRAM; 782 break; 783 case SOCK_STREAM: 784 target_type = TARGET_SOCK_STREAM; 785 break; 786 default: 787 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 788 break; 789 } 790 791 #if defined(SOCK_CLOEXEC) 792 if (host_type & SOCK_CLOEXEC) { 793 target_type |= TARGET_SOCK_CLOEXEC; 794 } 795 #endif 796 797 #if defined(SOCK_NONBLOCK) 798 if (host_type & SOCK_NONBLOCK) { 799 target_type |= TARGET_SOCK_NONBLOCK; 800 } 801 #endif 802 803 return target_type; 804 } 805 806 static abi_ulong target_brk; 807 static abi_ulong target_original_brk; 808 static abi_ulong brk_page; 809 810 void target_set_brk(abi_ulong new_brk) 811 { 812 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 813 brk_page = HOST_PAGE_ALIGN(target_brk); 814 } 815 816 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 817 #define DEBUGF_BRK(message, args...) 818 819 /* do_brk() must return target values and target errnos. */ 820 abi_long do_brk(abi_ulong new_brk) 821 { 822 abi_long mapped_addr; 823 abi_ulong new_alloc_size; 824 825 /* brk pointers are always untagged */ 826 827 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 828 829 if (!new_brk) { 830 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 831 return target_brk; 832 } 833 if (new_brk < target_original_brk) { 834 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 835 target_brk); 836 return target_brk; 837 } 838 839 /* If the new brk is less than the highest page reserved to the 840 * target heap allocation, set it and we're almost done... */ 841 if (new_brk <= brk_page) { 842 /* Heap contents are initialized to zero, as for anonymous 843 * mapped pages. */ 844 if (new_brk > target_brk) { 845 memset(g2h_untagged(target_brk), 0, new_brk - target_brk); 846 } 847 target_brk = new_brk; 848 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 849 return target_brk; 850 } 851 852 /* We need to allocate more memory after the brk... Note that 853 * we don't use MAP_FIXED because that will map over the top of 854 * any existing mapping (like the one with the host libc or qemu 855 * itself); instead we treat "mapped but at wrong address" as 856 * a failure and unmap again. 857 */ 858 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 859 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 860 PROT_READ|PROT_WRITE, 861 MAP_ANON|MAP_PRIVATE, 0, 0)); 862 863 if (mapped_addr == brk_page) { 864 /* Heap contents are initialized to zero, as for anonymous 865 * mapped pages. Technically the new pages are already 866 * initialized to zero since they *are* anonymous mapped 867 * pages, however we have to take care with the contents that 868 * come from the remaining part of the previous page: it may 869 * contains garbage data due to a previous heap usage (grown 870 * then shrunken). */ 871 memset(g2h_untagged(target_brk), 0, brk_page - target_brk); 872 873 target_brk = new_brk; 874 brk_page = HOST_PAGE_ALIGN(target_brk); 875 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 876 target_brk); 877 return target_brk; 878 } else if (mapped_addr != -1) { 879 /* Mapped but at wrong address, meaning there wasn't actually 880 * enough space for this brk. 881 */ 882 target_munmap(mapped_addr, new_alloc_size); 883 mapped_addr = -1; 884 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 885 } 886 else { 887 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 888 } 889 890 #if defined(TARGET_ALPHA) 891 /* We (partially) emulate OSF/1 on Alpha, which requires we 892 return a proper errno, not an unchanged brk value. */ 893 return -TARGET_ENOMEM; 894 #endif 895 /* For everything else, return the previous break. */ 896 return target_brk; 897 } 898 899 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 900 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 901 static inline abi_long copy_from_user_fdset(fd_set *fds, 902 abi_ulong target_fds_addr, 903 int n) 904 { 905 int i, nw, j, k; 906 abi_ulong b, *target_fds; 907 908 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 909 if (!(target_fds = lock_user(VERIFY_READ, 910 target_fds_addr, 911 sizeof(abi_ulong) * nw, 912 1))) 913 return -TARGET_EFAULT; 914 915 FD_ZERO(fds); 916 k = 0; 917 for (i = 0; i < nw; i++) { 918 /* grab the abi_ulong */ 919 __get_user(b, &target_fds[i]); 920 for (j = 0; j < TARGET_ABI_BITS; j++) { 921 /* check the bit inside the abi_ulong */ 922 if ((b >> j) & 1) 923 FD_SET(k, fds); 924 k++; 925 } 926 } 927 928 unlock_user(target_fds, target_fds_addr, 0); 929 930 return 0; 931 } 932 933 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 934 abi_ulong target_fds_addr, 935 int n) 936 { 937 if (target_fds_addr) { 938 if (copy_from_user_fdset(fds, target_fds_addr, n)) 939 return -TARGET_EFAULT; 940 *fds_ptr = fds; 941 } else { 942 *fds_ptr = NULL; 943 } 944 return 0; 945 } 946 947 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 948 const fd_set *fds, 949 int n) 950 { 951 int i, nw, j, k; 952 abi_long v; 953 abi_ulong *target_fds; 954 955 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 956 if (!(target_fds = lock_user(VERIFY_WRITE, 957 target_fds_addr, 958 sizeof(abi_ulong) * nw, 959 0))) 960 return -TARGET_EFAULT; 961 962 k = 0; 963 for (i = 0; i < nw; i++) { 964 v = 0; 965 for (j = 0; j < TARGET_ABI_BITS; j++) { 966 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 967 k++; 968 } 969 __put_user(v, &target_fds[i]); 970 } 971 972 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 973 974 return 0; 975 } 976 #endif 977 978 #if defined(__alpha__) 979 #define HOST_HZ 1024 980 #else 981 #define HOST_HZ 100 982 #endif 983 984 static inline abi_long host_to_target_clock_t(long ticks) 985 { 986 #if HOST_HZ == TARGET_HZ 987 return ticks; 988 #else 989 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 990 #endif 991 } 992 993 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 994 const struct rusage *rusage) 995 { 996 struct target_rusage *target_rusage; 997 998 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 999 return -TARGET_EFAULT; 1000 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 1001 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 1002 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 1003 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 1004 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 1005 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 1006 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 1007 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 1008 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 1009 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 1010 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 1011 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 1012 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 1013 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 1014 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 1015 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 1016 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 1017 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 1018 unlock_user_struct(target_rusage, target_addr, 1); 1019 1020 return 0; 1021 } 1022 1023 #ifdef TARGET_NR_setrlimit 1024 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 1025 { 1026 abi_ulong target_rlim_swap; 1027 rlim_t result; 1028 1029 target_rlim_swap = tswapal(target_rlim); 1030 if (target_rlim_swap == TARGET_RLIM_INFINITY) 1031 return RLIM_INFINITY; 1032 1033 result = target_rlim_swap; 1034 if (target_rlim_swap != (rlim_t)result) 1035 return RLIM_INFINITY; 1036 1037 return result; 1038 } 1039 #endif 1040 1041 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) 1042 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 1043 { 1044 abi_ulong target_rlim_swap; 1045 abi_ulong result; 1046 1047 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1048 target_rlim_swap = TARGET_RLIM_INFINITY; 1049 else 1050 target_rlim_swap = rlim; 1051 result = tswapal(target_rlim_swap); 1052 1053 return result; 1054 } 1055 #endif 1056 1057 static inline int target_to_host_resource(int code) 1058 { 1059 switch (code) { 1060 case TARGET_RLIMIT_AS: 1061 return RLIMIT_AS; 1062 case TARGET_RLIMIT_CORE: 1063 return RLIMIT_CORE; 1064 case TARGET_RLIMIT_CPU: 1065 return RLIMIT_CPU; 1066 case TARGET_RLIMIT_DATA: 1067 return RLIMIT_DATA; 1068 case TARGET_RLIMIT_FSIZE: 1069 return RLIMIT_FSIZE; 1070 case TARGET_RLIMIT_LOCKS: 1071 return RLIMIT_LOCKS; 1072 case TARGET_RLIMIT_MEMLOCK: 1073 return RLIMIT_MEMLOCK; 1074 case TARGET_RLIMIT_MSGQUEUE: 1075 return RLIMIT_MSGQUEUE; 1076 case TARGET_RLIMIT_NICE: 1077 return RLIMIT_NICE; 1078 case TARGET_RLIMIT_NOFILE: 1079 return RLIMIT_NOFILE; 1080 case TARGET_RLIMIT_NPROC: 1081 return RLIMIT_NPROC; 1082 case TARGET_RLIMIT_RSS: 1083 return RLIMIT_RSS; 1084 case TARGET_RLIMIT_RTPRIO: 1085 return RLIMIT_RTPRIO; 1086 #ifdef RLIMIT_RTTIME 1087 case TARGET_RLIMIT_RTTIME: 1088 return RLIMIT_RTTIME; 1089 #endif 1090 case TARGET_RLIMIT_SIGPENDING: 1091 return RLIMIT_SIGPENDING; 1092 case TARGET_RLIMIT_STACK: 1093 return RLIMIT_STACK; 1094 default: 1095 return code; 1096 } 1097 } 1098 1099 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1100 abi_ulong target_tv_addr) 1101 { 1102 struct target_timeval *target_tv; 1103 1104 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1105 return -TARGET_EFAULT; 1106 } 1107 1108 __get_user(tv->tv_sec, &target_tv->tv_sec); 1109 __get_user(tv->tv_usec, &target_tv->tv_usec); 1110 1111 unlock_user_struct(target_tv, target_tv_addr, 0); 1112 1113 return 0; 1114 } 1115 1116 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1117 const struct timeval *tv) 1118 { 1119 struct target_timeval *target_tv; 1120 1121 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1122 return -TARGET_EFAULT; 1123 } 1124 1125 __put_user(tv->tv_sec, &target_tv->tv_sec); 1126 __put_user(tv->tv_usec, &target_tv->tv_usec); 1127 1128 unlock_user_struct(target_tv, target_tv_addr, 1); 1129 1130 return 0; 1131 } 1132 1133 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 1134 static inline abi_long copy_from_user_timeval64(struct timeval *tv, 1135 abi_ulong target_tv_addr) 1136 { 1137 struct target__kernel_sock_timeval *target_tv; 1138 1139 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1140 return -TARGET_EFAULT; 1141 } 1142 1143 __get_user(tv->tv_sec, &target_tv->tv_sec); 1144 __get_user(tv->tv_usec, &target_tv->tv_usec); 1145 1146 unlock_user_struct(target_tv, target_tv_addr, 0); 1147 1148 return 0; 1149 } 1150 #endif 1151 1152 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, 1153 const struct timeval *tv) 1154 { 1155 struct target__kernel_sock_timeval *target_tv; 1156 1157 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1158 return -TARGET_EFAULT; 1159 } 1160 1161 __put_user(tv->tv_sec, &target_tv->tv_sec); 1162 __put_user(tv->tv_usec, &target_tv->tv_usec); 1163 1164 unlock_user_struct(target_tv, target_tv_addr, 1); 1165 1166 return 0; 1167 } 1168 1169 #if defined(TARGET_NR_futex) || \ 1170 defined(TARGET_NR_rt_sigtimedwait) || \ 1171 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ 1172 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ 1173 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ 1174 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \ 1175 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \ 1176 defined(TARGET_NR_timer_settime) || \ 1177 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 1178 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 1179 abi_ulong target_addr) 1180 { 1181 struct target_timespec *target_ts; 1182 1183 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1184 return -TARGET_EFAULT; 1185 } 1186 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1187 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1188 unlock_user_struct(target_ts, target_addr, 0); 1189 return 0; 1190 } 1191 #endif 1192 1193 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \ 1194 defined(TARGET_NR_timer_settime64) || \ 1195 defined(TARGET_NR_mq_timedsend_time64) || \ 1196 defined(TARGET_NR_mq_timedreceive_time64) || \ 1197 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \ 1198 defined(TARGET_NR_clock_nanosleep_time64) || \ 1199 defined(TARGET_NR_rt_sigtimedwait_time64) || \ 1200 defined(TARGET_NR_utimensat) || \ 1201 defined(TARGET_NR_utimensat_time64) || \ 1202 defined(TARGET_NR_semtimedop_time64) || \ 1203 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64) 1204 static inline abi_long target_to_host_timespec64(struct timespec *host_ts, 1205 abi_ulong target_addr) 1206 { 1207 struct target__kernel_timespec *target_ts; 1208 1209 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1210 return -TARGET_EFAULT; 1211 } 1212 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1213 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1214 /* in 32bit mode, this drops the padding */ 1215 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec; 1216 unlock_user_struct(target_ts, target_addr, 0); 1217 return 0; 1218 } 1219 #endif 1220 1221 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 1222 struct timespec *host_ts) 1223 { 1224 struct target_timespec *target_ts; 1225 1226 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1227 return -TARGET_EFAULT; 1228 } 1229 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1230 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1231 unlock_user_struct(target_ts, target_addr, 1); 1232 return 0; 1233 } 1234 1235 static inline abi_long host_to_target_timespec64(abi_ulong target_addr, 1236 struct timespec *host_ts) 1237 { 1238 struct target__kernel_timespec *target_ts; 1239 1240 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1241 return -TARGET_EFAULT; 1242 } 1243 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1244 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1245 unlock_user_struct(target_ts, target_addr, 1); 1246 return 0; 1247 } 1248 1249 #if defined(TARGET_NR_gettimeofday) 1250 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, 1251 struct timezone *tz) 1252 { 1253 struct target_timezone *target_tz; 1254 1255 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) { 1256 return -TARGET_EFAULT; 1257 } 1258 1259 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1260 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1261 1262 unlock_user_struct(target_tz, target_tz_addr, 1); 1263 1264 return 0; 1265 } 1266 #endif 1267 1268 #if defined(TARGET_NR_settimeofday) 1269 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1270 abi_ulong target_tz_addr) 1271 { 1272 struct target_timezone *target_tz; 1273 1274 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1275 return -TARGET_EFAULT; 1276 } 1277 1278 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1279 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1280 1281 unlock_user_struct(target_tz, target_tz_addr, 0); 1282 1283 return 0; 1284 } 1285 #endif 1286 1287 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1288 #include <mqueue.h> 1289 1290 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1291 abi_ulong target_mq_attr_addr) 1292 { 1293 struct target_mq_attr *target_mq_attr; 1294 1295 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1296 target_mq_attr_addr, 1)) 1297 return -TARGET_EFAULT; 1298 1299 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1300 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1301 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1302 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1303 1304 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1305 1306 return 0; 1307 } 1308 1309 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1310 const struct mq_attr *attr) 1311 { 1312 struct target_mq_attr *target_mq_attr; 1313 1314 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1315 target_mq_attr_addr, 0)) 1316 return -TARGET_EFAULT; 1317 1318 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1319 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1320 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1321 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1322 1323 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1324 1325 return 0; 1326 } 1327 #endif 1328 1329 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1330 /* do_select() must return target values and target errnos. */ 1331 static abi_long do_select(int n, 1332 abi_ulong rfd_addr, abi_ulong wfd_addr, 1333 abi_ulong efd_addr, abi_ulong target_tv_addr) 1334 { 1335 fd_set rfds, wfds, efds; 1336 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1337 struct timeval tv; 1338 struct timespec ts, *ts_ptr; 1339 abi_long ret; 1340 1341 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1342 if (ret) { 1343 return ret; 1344 } 1345 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1346 if (ret) { 1347 return ret; 1348 } 1349 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1350 if (ret) { 1351 return ret; 1352 } 1353 1354 if (target_tv_addr) { 1355 if (copy_from_user_timeval(&tv, target_tv_addr)) 1356 return -TARGET_EFAULT; 1357 ts.tv_sec = tv.tv_sec; 1358 ts.tv_nsec = tv.tv_usec * 1000; 1359 ts_ptr = &ts; 1360 } else { 1361 ts_ptr = NULL; 1362 } 1363 1364 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1365 ts_ptr, NULL)); 1366 1367 if (!is_error(ret)) { 1368 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1369 return -TARGET_EFAULT; 1370 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1371 return -TARGET_EFAULT; 1372 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1373 return -TARGET_EFAULT; 1374 1375 if (target_tv_addr) { 1376 tv.tv_sec = ts.tv_sec; 1377 tv.tv_usec = ts.tv_nsec / 1000; 1378 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1379 return -TARGET_EFAULT; 1380 } 1381 } 1382 } 1383 1384 return ret; 1385 } 1386 1387 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1388 static abi_long do_old_select(abi_ulong arg1) 1389 { 1390 struct target_sel_arg_struct *sel; 1391 abi_ulong inp, outp, exp, tvp; 1392 long nsel; 1393 1394 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1395 return -TARGET_EFAULT; 1396 } 1397 1398 nsel = tswapal(sel->n); 1399 inp = tswapal(sel->inp); 1400 outp = tswapal(sel->outp); 1401 exp = tswapal(sel->exp); 1402 tvp = tswapal(sel->tvp); 1403 1404 unlock_user_struct(sel, arg1, 0); 1405 1406 return do_select(nsel, inp, outp, exp, tvp); 1407 } 1408 #endif 1409 #endif 1410 1411 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 1412 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3, 1413 abi_long arg4, abi_long arg5, abi_long arg6, 1414 bool time64) 1415 { 1416 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 1417 fd_set rfds, wfds, efds; 1418 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1419 struct timespec ts, *ts_ptr; 1420 abi_long ret; 1421 1422 /* 1423 * The 6th arg is actually two args smashed together, 1424 * so we cannot use the C library. 1425 */ 1426 struct { 1427 sigset_t *set; 1428 size_t size; 1429 } sig, *sig_ptr; 1430 1431 abi_ulong arg_sigset, arg_sigsize, *arg7; 1432 1433 n = arg1; 1434 rfd_addr = arg2; 1435 wfd_addr = arg3; 1436 efd_addr = arg4; 1437 ts_addr = arg5; 1438 1439 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1440 if (ret) { 1441 return ret; 1442 } 1443 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1444 if (ret) { 1445 return ret; 1446 } 1447 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1448 if (ret) { 1449 return ret; 1450 } 1451 1452 /* 1453 * This takes a timespec, and not a timeval, so we cannot 1454 * use the do_select() helper ... 1455 */ 1456 if (ts_addr) { 1457 if (time64) { 1458 if (target_to_host_timespec64(&ts, ts_addr)) { 1459 return -TARGET_EFAULT; 1460 } 1461 } else { 1462 if (target_to_host_timespec(&ts, ts_addr)) { 1463 return -TARGET_EFAULT; 1464 } 1465 } 1466 ts_ptr = &ts; 1467 } else { 1468 ts_ptr = NULL; 1469 } 1470 1471 /* Extract the two packed args for the sigset */ 1472 sig_ptr = NULL; 1473 if (arg6) { 1474 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 1475 if (!arg7) { 1476 return -TARGET_EFAULT; 1477 } 1478 arg_sigset = tswapal(arg7[0]); 1479 arg_sigsize = tswapal(arg7[1]); 1480 unlock_user(arg7, arg6, 0); 1481 1482 if (arg_sigset) { 1483 ret = process_sigsuspend_mask(&sig.set, arg_sigset, arg_sigsize); 1484 if (ret != 0) { 1485 return ret; 1486 } 1487 sig_ptr = &sig; 1488 sig.size = SIGSET_T_SIZE; 1489 } 1490 } 1491 1492 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1493 ts_ptr, sig_ptr)); 1494 1495 if (sig_ptr) { 1496 finish_sigsuspend_mask(ret); 1497 } 1498 1499 if (!is_error(ret)) { 1500 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) { 1501 return -TARGET_EFAULT; 1502 } 1503 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) { 1504 return -TARGET_EFAULT; 1505 } 1506 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) { 1507 return -TARGET_EFAULT; 1508 } 1509 if (time64) { 1510 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) { 1511 return -TARGET_EFAULT; 1512 } 1513 } else { 1514 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) { 1515 return -TARGET_EFAULT; 1516 } 1517 } 1518 } 1519 return ret; 1520 } 1521 #endif 1522 1523 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \ 1524 defined(TARGET_NR_ppoll_time64) 1525 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3, 1526 abi_long arg4, abi_long arg5, bool ppoll, bool time64) 1527 { 1528 struct target_pollfd *target_pfd; 1529 unsigned int nfds = arg2; 1530 struct pollfd *pfd; 1531 unsigned int i; 1532 abi_long ret; 1533 1534 pfd = NULL; 1535 target_pfd = NULL; 1536 if (nfds) { 1537 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 1538 return -TARGET_EINVAL; 1539 } 1540 target_pfd = lock_user(VERIFY_WRITE, arg1, 1541 sizeof(struct target_pollfd) * nfds, 1); 1542 if (!target_pfd) { 1543 return -TARGET_EFAULT; 1544 } 1545 1546 pfd = alloca(sizeof(struct pollfd) * nfds); 1547 for (i = 0; i < nfds; i++) { 1548 pfd[i].fd = tswap32(target_pfd[i].fd); 1549 pfd[i].events = tswap16(target_pfd[i].events); 1550 } 1551 } 1552 if (ppoll) { 1553 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 1554 sigset_t *set = NULL; 1555 1556 if (arg3) { 1557 if (time64) { 1558 if (target_to_host_timespec64(timeout_ts, arg3)) { 1559 unlock_user(target_pfd, arg1, 0); 1560 return -TARGET_EFAULT; 1561 } 1562 } else { 1563 if (target_to_host_timespec(timeout_ts, arg3)) { 1564 unlock_user(target_pfd, arg1, 0); 1565 return -TARGET_EFAULT; 1566 } 1567 } 1568 } else { 1569 timeout_ts = NULL; 1570 } 1571 1572 if (arg4) { 1573 ret = process_sigsuspend_mask(&set, arg4, arg5); 1574 if (ret != 0) { 1575 unlock_user(target_pfd, arg1, 0); 1576 return ret; 1577 } 1578 } 1579 1580 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 1581 set, SIGSET_T_SIZE)); 1582 1583 if (set) { 1584 finish_sigsuspend_mask(ret); 1585 } 1586 if (!is_error(ret) && arg3) { 1587 if (time64) { 1588 if (host_to_target_timespec64(arg3, timeout_ts)) { 1589 return -TARGET_EFAULT; 1590 } 1591 } else { 1592 if (host_to_target_timespec(arg3, timeout_ts)) { 1593 return -TARGET_EFAULT; 1594 } 1595 } 1596 } 1597 } else { 1598 struct timespec ts, *pts; 1599 1600 if (arg3 >= 0) { 1601 /* Convert ms to secs, ns */ 1602 ts.tv_sec = arg3 / 1000; 1603 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 1604 pts = &ts; 1605 } else { 1606 /* -ve poll() timeout means "infinite" */ 1607 pts = NULL; 1608 } 1609 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 1610 } 1611 1612 if (!is_error(ret)) { 1613 for (i = 0; i < nfds; i++) { 1614 target_pfd[i].revents = tswap16(pfd[i].revents); 1615 } 1616 } 1617 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 1618 return ret; 1619 } 1620 #endif 1621 1622 static abi_long do_pipe(CPUArchState *cpu_env, abi_ulong pipedes, 1623 int flags, int is_pipe2) 1624 { 1625 int host_pipe[2]; 1626 abi_long ret; 1627 ret = pipe2(host_pipe, flags); 1628 1629 if (is_error(ret)) 1630 return get_errno(ret); 1631 1632 /* Several targets have special calling conventions for the original 1633 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1634 if (!is_pipe2) { 1635 #if defined(TARGET_ALPHA) 1636 cpu_env->ir[IR_A4] = host_pipe[1]; 1637 return host_pipe[0]; 1638 #elif defined(TARGET_MIPS) 1639 cpu_env->active_tc.gpr[3] = host_pipe[1]; 1640 return host_pipe[0]; 1641 #elif defined(TARGET_SH4) 1642 cpu_env->gregs[1] = host_pipe[1]; 1643 return host_pipe[0]; 1644 #elif defined(TARGET_SPARC) 1645 cpu_env->regwptr[1] = host_pipe[1]; 1646 return host_pipe[0]; 1647 #endif 1648 } 1649 1650 if (put_user_s32(host_pipe[0], pipedes) 1651 || put_user_s32(host_pipe[1], pipedes + sizeof(abi_int))) 1652 return -TARGET_EFAULT; 1653 return get_errno(ret); 1654 } 1655 1656 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1657 abi_ulong target_addr, 1658 socklen_t len) 1659 { 1660 struct target_ip_mreqn *target_smreqn; 1661 1662 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1663 if (!target_smreqn) 1664 return -TARGET_EFAULT; 1665 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1666 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1667 if (len == sizeof(struct target_ip_mreqn)) 1668 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1669 unlock_user(target_smreqn, target_addr, 0); 1670 1671 return 0; 1672 } 1673 1674 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1675 abi_ulong target_addr, 1676 socklen_t len) 1677 { 1678 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1679 sa_family_t sa_family; 1680 struct target_sockaddr *target_saddr; 1681 1682 if (fd_trans_target_to_host_addr(fd)) { 1683 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1684 } 1685 1686 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1687 if (!target_saddr) 1688 return -TARGET_EFAULT; 1689 1690 sa_family = tswap16(target_saddr->sa_family); 1691 1692 /* Oops. The caller might send a incomplete sun_path; sun_path 1693 * must be terminated by \0 (see the manual page), but 1694 * unfortunately it is quite common to specify sockaddr_un 1695 * length as "strlen(x->sun_path)" while it should be 1696 * "strlen(...) + 1". We'll fix that here if needed. 1697 * Linux kernel has a similar feature. 1698 */ 1699 1700 if (sa_family == AF_UNIX) { 1701 if (len < unix_maxlen && len > 0) { 1702 char *cp = (char*)target_saddr; 1703 1704 if ( cp[len-1] && !cp[len] ) 1705 len++; 1706 } 1707 if (len > unix_maxlen) 1708 len = unix_maxlen; 1709 } 1710 1711 memcpy(addr, target_saddr, len); 1712 addr->sa_family = sa_family; 1713 if (sa_family == AF_NETLINK) { 1714 struct sockaddr_nl *nladdr; 1715 1716 nladdr = (struct sockaddr_nl *)addr; 1717 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1718 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1719 } else if (sa_family == AF_PACKET) { 1720 struct target_sockaddr_ll *lladdr; 1721 1722 lladdr = (struct target_sockaddr_ll *)addr; 1723 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1724 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1725 } 1726 unlock_user(target_saddr, target_addr, 0); 1727 1728 return 0; 1729 } 1730 1731 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1732 struct sockaddr *addr, 1733 socklen_t len) 1734 { 1735 struct target_sockaddr *target_saddr; 1736 1737 if (len == 0) { 1738 return 0; 1739 } 1740 assert(addr); 1741 1742 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1743 if (!target_saddr) 1744 return -TARGET_EFAULT; 1745 memcpy(target_saddr, addr, len); 1746 if (len >= offsetof(struct target_sockaddr, sa_family) + 1747 sizeof(target_saddr->sa_family)) { 1748 target_saddr->sa_family = tswap16(addr->sa_family); 1749 } 1750 if (addr->sa_family == AF_NETLINK && 1751 len >= sizeof(struct target_sockaddr_nl)) { 1752 struct target_sockaddr_nl *target_nl = 1753 (struct target_sockaddr_nl *)target_saddr; 1754 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1755 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1756 } else if (addr->sa_family == AF_PACKET) { 1757 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1758 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1759 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1760 } else if (addr->sa_family == AF_INET6 && 1761 len >= sizeof(struct target_sockaddr_in6)) { 1762 struct target_sockaddr_in6 *target_in6 = 1763 (struct target_sockaddr_in6 *)target_saddr; 1764 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1765 } 1766 unlock_user(target_saddr, target_addr, len); 1767 1768 return 0; 1769 } 1770 1771 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1772 struct target_msghdr *target_msgh) 1773 { 1774 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1775 abi_long msg_controllen; 1776 abi_ulong target_cmsg_addr; 1777 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1778 socklen_t space = 0; 1779 1780 msg_controllen = tswapal(target_msgh->msg_controllen); 1781 if (msg_controllen < sizeof (struct target_cmsghdr)) 1782 goto the_end; 1783 target_cmsg_addr = tswapal(target_msgh->msg_control); 1784 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1785 target_cmsg_start = target_cmsg; 1786 if (!target_cmsg) 1787 return -TARGET_EFAULT; 1788 1789 while (cmsg && target_cmsg) { 1790 void *data = CMSG_DATA(cmsg); 1791 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1792 1793 int len = tswapal(target_cmsg->cmsg_len) 1794 - sizeof(struct target_cmsghdr); 1795 1796 space += CMSG_SPACE(len); 1797 if (space > msgh->msg_controllen) { 1798 space -= CMSG_SPACE(len); 1799 /* This is a QEMU bug, since we allocated the payload 1800 * area ourselves (unlike overflow in host-to-target 1801 * conversion, which is just the guest giving us a buffer 1802 * that's too small). It can't happen for the payload types 1803 * we currently support; if it becomes an issue in future 1804 * we would need to improve our allocation strategy to 1805 * something more intelligent than "twice the size of the 1806 * target buffer we're reading from". 1807 */ 1808 qemu_log_mask(LOG_UNIMP, 1809 ("Unsupported ancillary data %d/%d: " 1810 "unhandled msg size\n"), 1811 tswap32(target_cmsg->cmsg_level), 1812 tswap32(target_cmsg->cmsg_type)); 1813 break; 1814 } 1815 1816 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1817 cmsg->cmsg_level = SOL_SOCKET; 1818 } else { 1819 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1820 } 1821 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1822 cmsg->cmsg_len = CMSG_LEN(len); 1823 1824 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1825 int *fd = (int *)data; 1826 int *target_fd = (int *)target_data; 1827 int i, numfds = len / sizeof(int); 1828 1829 for (i = 0; i < numfds; i++) { 1830 __get_user(fd[i], target_fd + i); 1831 } 1832 } else if (cmsg->cmsg_level == SOL_SOCKET 1833 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1834 struct ucred *cred = (struct ucred *)data; 1835 struct target_ucred *target_cred = 1836 (struct target_ucred *)target_data; 1837 1838 __get_user(cred->pid, &target_cred->pid); 1839 __get_user(cred->uid, &target_cred->uid); 1840 __get_user(cred->gid, &target_cred->gid); 1841 } else { 1842 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1843 cmsg->cmsg_level, cmsg->cmsg_type); 1844 memcpy(data, target_data, len); 1845 } 1846 1847 cmsg = CMSG_NXTHDR(msgh, cmsg); 1848 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1849 target_cmsg_start); 1850 } 1851 unlock_user(target_cmsg, target_cmsg_addr, 0); 1852 the_end: 1853 msgh->msg_controllen = space; 1854 return 0; 1855 } 1856 1857 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1858 struct msghdr *msgh) 1859 { 1860 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1861 abi_long msg_controllen; 1862 abi_ulong target_cmsg_addr; 1863 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1864 socklen_t space = 0; 1865 1866 msg_controllen = tswapal(target_msgh->msg_controllen); 1867 if (msg_controllen < sizeof (struct target_cmsghdr)) 1868 goto the_end; 1869 target_cmsg_addr = tswapal(target_msgh->msg_control); 1870 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1871 target_cmsg_start = target_cmsg; 1872 if (!target_cmsg) 1873 return -TARGET_EFAULT; 1874 1875 while (cmsg && target_cmsg) { 1876 void *data = CMSG_DATA(cmsg); 1877 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1878 1879 int len = cmsg->cmsg_len - sizeof(struct cmsghdr); 1880 int tgt_len, tgt_space; 1881 1882 /* We never copy a half-header but may copy half-data; 1883 * this is Linux's behaviour in put_cmsg(). Note that 1884 * truncation here is a guest problem (which we report 1885 * to the guest via the CTRUNC bit), unlike truncation 1886 * in target_to_host_cmsg, which is a QEMU bug. 1887 */ 1888 if (msg_controllen < sizeof(struct target_cmsghdr)) { 1889 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1890 break; 1891 } 1892 1893 if (cmsg->cmsg_level == SOL_SOCKET) { 1894 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1895 } else { 1896 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1897 } 1898 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1899 1900 /* Payload types which need a different size of payload on 1901 * the target must adjust tgt_len here. 1902 */ 1903 tgt_len = len; 1904 switch (cmsg->cmsg_level) { 1905 case SOL_SOCKET: 1906 switch (cmsg->cmsg_type) { 1907 case SO_TIMESTAMP: 1908 tgt_len = sizeof(struct target_timeval); 1909 break; 1910 default: 1911 break; 1912 } 1913 break; 1914 default: 1915 break; 1916 } 1917 1918 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) { 1919 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1920 tgt_len = msg_controllen - sizeof(struct target_cmsghdr); 1921 } 1922 1923 /* We must now copy-and-convert len bytes of payload 1924 * into tgt_len bytes of destination space. Bear in mind 1925 * that in both source and destination we may be dealing 1926 * with a truncated value! 1927 */ 1928 switch (cmsg->cmsg_level) { 1929 case SOL_SOCKET: 1930 switch (cmsg->cmsg_type) { 1931 case SCM_RIGHTS: 1932 { 1933 int *fd = (int *)data; 1934 int *target_fd = (int *)target_data; 1935 int i, numfds = tgt_len / sizeof(int); 1936 1937 for (i = 0; i < numfds; i++) { 1938 __put_user(fd[i], target_fd + i); 1939 } 1940 break; 1941 } 1942 case SO_TIMESTAMP: 1943 { 1944 struct timeval *tv = (struct timeval *)data; 1945 struct target_timeval *target_tv = 1946 (struct target_timeval *)target_data; 1947 1948 if (len != sizeof(struct timeval) || 1949 tgt_len != sizeof(struct target_timeval)) { 1950 goto unimplemented; 1951 } 1952 1953 /* copy struct timeval to target */ 1954 __put_user(tv->tv_sec, &target_tv->tv_sec); 1955 __put_user(tv->tv_usec, &target_tv->tv_usec); 1956 break; 1957 } 1958 case SCM_CREDENTIALS: 1959 { 1960 struct ucred *cred = (struct ucred *)data; 1961 struct target_ucred *target_cred = 1962 (struct target_ucred *)target_data; 1963 1964 __put_user(cred->pid, &target_cred->pid); 1965 __put_user(cred->uid, &target_cred->uid); 1966 __put_user(cred->gid, &target_cred->gid); 1967 break; 1968 } 1969 default: 1970 goto unimplemented; 1971 } 1972 break; 1973 1974 case SOL_IP: 1975 switch (cmsg->cmsg_type) { 1976 case IP_TTL: 1977 { 1978 uint32_t *v = (uint32_t *)data; 1979 uint32_t *t_int = (uint32_t *)target_data; 1980 1981 if (len != sizeof(uint32_t) || 1982 tgt_len != sizeof(uint32_t)) { 1983 goto unimplemented; 1984 } 1985 __put_user(*v, t_int); 1986 break; 1987 } 1988 case IP_RECVERR: 1989 { 1990 struct errhdr_t { 1991 struct sock_extended_err ee; 1992 struct sockaddr_in offender; 1993 }; 1994 struct errhdr_t *errh = (struct errhdr_t *)data; 1995 struct errhdr_t *target_errh = 1996 (struct errhdr_t *)target_data; 1997 1998 if (len != sizeof(struct errhdr_t) || 1999 tgt_len != sizeof(struct errhdr_t)) { 2000 goto unimplemented; 2001 } 2002 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2003 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2004 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2005 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2006 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2007 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2008 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2009 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2010 (void *) &errh->offender, sizeof(errh->offender)); 2011 break; 2012 } 2013 default: 2014 goto unimplemented; 2015 } 2016 break; 2017 2018 case SOL_IPV6: 2019 switch (cmsg->cmsg_type) { 2020 case IPV6_HOPLIMIT: 2021 { 2022 uint32_t *v = (uint32_t *)data; 2023 uint32_t *t_int = (uint32_t *)target_data; 2024 2025 if (len != sizeof(uint32_t) || 2026 tgt_len != sizeof(uint32_t)) { 2027 goto unimplemented; 2028 } 2029 __put_user(*v, t_int); 2030 break; 2031 } 2032 case IPV6_RECVERR: 2033 { 2034 struct errhdr6_t { 2035 struct sock_extended_err ee; 2036 struct sockaddr_in6 offender; 2037 }; 2038 struct errhdr6_t *errh = (struct errhdr6_t *)data; 2039 struct errhdr6_t *target_errh = 2040 (struct errhdr6_t *)target_data; 2041 2042 if (len != sizeof(struct errhdr6_t) || 2043 tgt_len != sizeof(struct errhdr6_t)) { 2044 goto unimplemented; 2045 } 2046 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2047 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2048 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2049 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2050 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2051 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2052 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2053 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2054 (void *) &errh->offender, sizeof(errh->offender)); 2055 break; 2056 } 2057 default: 2058 goto unimplemented; 2059 } 2060 break; 2061 2062 default: 2063 unimplemented: 2064 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 2065 cmsg->cmsg_level, cmsg->cmsg_type); 2066 memcpy(target_data, data, MIN(len, tgt_len)); 2067 if (tgt_len > len) { 2068 memset(target_data + len, 0, tgt_len - len); 2069 } 2070 } 2071 2072 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len)); 2073 tgt_space = TARGET_CMSG_SPACE(tgt_len); 2074 if (msg_controllen < tgt_space) { 2075 tgt_space = msg_controllen; 2076 } 2077 msg_controllen -= tgt_space; 2078 space += tgt_space; 2079 cmsg = CMSG_NXTHDR(msgh, cmsg); 2080 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 2081 target_cmsg_start); 2082 } 2083 unlock_user(target_cmsg, target_cmsg_addr, space); 2084 the_end: 2085 target_msgh->msg_controllen = tswapal(space); 2086 return 0; 2087 } 2088 2089 /* do_setsockopt() Must return target values and target errnos. */ 2090 static abi_long do_setsockopt(int sockfd, int level, int optname, 2091 abi_ulong optval_addr, socklen_t optlen) 2092 { 2093 abi_long ret; 2094 int val; 2095 struct ip_mreqn *ip_mreq; 2096 struct ip_mreq_source *ip_mreq_source; 2097 2098 switch(level) { 2099 case SOL_TCP: 2100 case SOL_UDP: 2101 /* TCP and UDP options all take an 'int' value. */ 2102 if (optlen < sizeof(uint32_t)) 2103 return -TARGET_EINVAL; 2104 2105 if (get_user_u32(val, optval_addr)) 2106 return -TARGET_EFAULT; 2107 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2108 break; 2109 case SOL_IP: 2110 switch(optname) { 2111 case IP_TOS: 2112 case IP_TTL: 2113 case IP_HDRINCL: 2114 case IP_ROUTER_ALERT: 2115 case IP_RECVOPTS: 2116 case IP_RETOPTS: 2117 case IP_PKTINFO: 2118 case IP_MTU_DISCOVER: 2119 case IP_RECVERR: 2120 case IP_RECVTTL: 2121 case IP_RECVTOS: 2122 #ifdef IP_FREEBIND 2123 case IP_FREEBIND: 2124 #endif 2125 case IP_MULTICAST_TTL: 2126 case IP_MULTICAST_LOOP: 2127 val = 0; 2128 if (optlen >= sizeof(uint32_t)) { 2129 if (get_user_u32(val, optval_addr)) 2130 return -TARGET_EFAULT; 2131 } else if (optlen >= 1) { 2132 if (get_user_u8(val, optval_addr)) 2133 return -TARGET_EFAULT; 2134 } 2135 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2136 break; 2137 case IP_ADD_MEMBERSHIP: 2138 case IP_DROP_MEMBERSHIP: 2139 if (optlen < sizeof (struct target_ip_mreq) || 2140 optlen > sizeof (struct target_ip_mreqn)) 2141 return -TARGET_EINVAL; 2142 2143 ip_mreq = (struct ip_mreqn *) alloca(optlen); 2144 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 2145 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 2146 break; 2147 2148 case IP_BLOCK_SOURCE: 2149 case IP_UNBLOCK_SOURCE: 2150 case IP_ADD_SOURCE_MEMBERSHIP: 2151 case IP_DROP_SOURCE_MEMBERSHIP: 2152 if (optlen != sizeof (struct target_ip_mreq_source)) 2153 return -TARGET_EINVAL; 2154 2155 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2156 if (!ip_mreq_source) { 2157 return -TARGET_EFAULT; 2158 } 2159 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 2160 unlock_user (ip_mreq_source, optval_addr, 0); 2161 break; 2162 2163 default: 2164 goto unimplemented; 2165 } 2166 break; 2167 case SOL_IPV6: 2168 switch (optname) { 2169 case IPV6_MTU_DISCOVER: 2170 case IPV6_MTU: 2171 case IPV6_V6ONLY: 2172 case IPV6_RECVPKTINFO: 2173 case IPV6_UNICAST_HOPS: 2174 case IPV6_MULTICAST_HOPS: 2175 case IPV6_MULTICAST_LOOP: 2176 case IPV6_RECVERR: 2177 case IPV6_RECVHOPLIMIT: 2178 case IPV6_2292HOPLIMIT: 2179 case IPV6_CHECKSUM: 2180 case IPV6_ADDRFORM: 2181 case IPV6_2292PKTINFO: 2182 case IPV6_RECVTCLASS: 2183 case IPV6_RECVRTHDR: 2184 case IPV6_2292RTHDR: 2185 case IPV6_RECVHOPOPTS: 2186 case IPV6_2292HOPOPTS: 2187 case IPV6_RECVDSTOPTS: 2188 case IPV6_2292DSTOPTS: 2189 case IPV6_TCLASS: 2190 case IPV6_ADDR_PREFERENCES: 2191 #ifdef IPV6_RECVPATHMTU 2192 case IPV6_RECVPATHMTU: 2193 #endif 2194 #ifdef IPV6_TRANSPARENT 2195 case IPV6_TRANSPARENT: 2196 #endif 2197 #ifdef IPV6_FREEBIND 2198 case IPV6_FREEBIND: 2199 #endif 2200 #ifdef IPV6_RECVORIGDSTADDR 2201 case IPV6_RECVORIGDSTADDR: 2202 #endif 2203 val = 0; 2204 if (optlen < sizeof(uint32_t)) { 2205 return -TARGET_EINVAL; 2206 } 2207 if (get_user_u32(val, optval_addr)) { 2208 return -TARGET_EFAULT; 2209 } 2210 ret = get_errno(setsockopt(sockfd, level, optname, 2211 &val, sizeof(val))); 2212 break; 2213 case IPV6_PKTINFO: 2214 { 2215 struct in6_pktinfo pki; 2216 2217 if (optlen < sizeof(pki)) { 2218 return -TARGET_EINVAL; 2219 } 2220 2221 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2222 return -TARGET_EFAULT; 2223 } 2224 2225 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2226 2227 ret = get_errno(setsockopt(sockfd, level, optname, 2228 &pki, sizeof(pki))); 2229 break; 2230 } 2231 case IPV6_ADD_MEMBERSHIP: 2232 case IPV6_DROP_MEMBERSHIP: 2233 { 2234 struct ipv6_mreq ipv6mreq; 2235 2236 if (optlen < sizeof(ipv6mreq)) { 2237 return -TARGET_EINVAL; 2238 } 2239 2240 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { 2241 return -TARGET_EFAULT; 2242 } 2243 2244 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface); 2245 2246 ret = get_errno(setsockopt(sockfd, level, optname, 2247 &ipv6mreq, sizeof(ipv6mreq))); 2248 break; 2249 } 2250 default: 2251 goto unimplemented; 2252 } 2253 break; 2254 case SOL_ICMPV6: 2255 switch (optname) { 2256 case ICMPV6_FILTER: 2257 { 2258 struct icmp6_filter icmp6f; 2259 2260 if (optlen > sizeof(icmp6f)) { 2261 optlen = sizeof(icmp6f); 2262 } 2263 2264 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2265 return -TARGET_EFAULT; 2266 } 2267 2268 for (val = 0; val < 8; val++) { 2269 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2270 } 2271 2272 ret = get_errno(setsockopt(sockfd, level, optname, 2273 &icmp6f, optlen)); 2274 break; 2275 } 2276 default: 2277 goto unimplemented; 2278 } 2279 break; 2280 case SOL_RAW: 2281 switch (optname) { 2282 case ICMP_FILTER: 2283 case IPV6_CHECKSUM: 2284 /* those take an u32 value */ 2285 if (optlen < sizeof(uint32_t)) { 2286 return -TARGET_EINVAL; 2287 } 2288 2289 if (get_user_u32(val, optval_addr)) { 2290 return -TARGET_EFAULT; 2291 } 2292 ret = get_errno(setsockopt(sockfd, level, optname, 2293 &val, sizeof(val))); 2294 break; 2295 2296 default: 2297 goto unimplemented; 2298 } 2299 break; 2300 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE) 2301 case SOL_ALG: 2302 switch (optname) { 2303 case ALG_SET_KEY: 2304 { 2305 char *alg_key = g_malloc(optlen); 2306 2307 if (!alg_key) { 2308 return -TARGET_ENOMEM; 2309 } 2310 if (copy_from_user(alg_key, optval_addr, optlen)) { 2311 g_free(alg_key); 2312 return -TARGET_EFAULT; 2313 } 2314 ret = get_errno(setsockopt(sockfd, level, optname, 2315 alg_key, optlen)); 2316 g_free(alg_key); 2317 break; 2318 } 2319 case ALG_SET_AEAD_AUTHSIZE: 2320 { 2321 ret = get_errno(setsockopt(sockfd, level, optname, 2322 NULL, optlen)); 2323 break; 2324 } 2325 default: 2326 goto unimplemented; 2327 } 2328 break; 2329 #endif 2330 case TARGET_SOL_SOCKET: 2331 switch (optname) { 2332 case TARGET_SO_RCVTIMEO: 2333 { 2334 struct timeval tv; 2335 2336 optname = SO_RCVTIMEO; 2337 2338 set_timeout: 2339 if (optlen != sizeof(struct target_timeval)) { 2340 return -TARGET_EINVAL; 2341 } 2342 2343 if (copy_from_user_timeval(&tv, optval_addr)) { 2344 return -TARGET_EFAULT; 2345 } 2346 2347 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2348 &tv, sizeof(tv))); 2349 return ret; 2350 } 2351 case TARGET_SO_SNDTIMEO: 2352 optname = SO_SNDTIMEO; 2353 goto set_timeout; 2354 case TARGET_SO_ATTACH_FILTER: 2355 { 2356 struct target_sock_fprog *tfprog; 2357 struct target_sock_filter *tfilter; 2358 struct sock_fprog fprog; 2359 struct sock_filter *filter; 2360 int i; 2361 2362 if (optlen != sizeof(*tfprog)) { 2363 return -TARGET_EINVAL; 2364 } 2365 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 2366 return -TARGET_EFAULT; 2367 } 2368 if (!lock_user_struct(VERIFY_READ, tfilter, 2369 tswapal(tfprog->filter), 0)) { 2370 unlock_user_struct(tfprog, optval_addr, 1); 2371 return -TARGET_EFAULT; 2372 } 2373 2374 fprog.len = tswap16(tfprog->len); 2375 filter = g_try_new(struct sock_filter, fprog.len); 2376 if (filter == NULL) { 2377 unlock_user_struct(tfilter, tfprog->filter, 1); 2378 unlock_user_struct(tfprog, optval_addr, 1); 2379 return -TARGET_ENOMEM; 2380 } 2381 for (i = 0; i < fprog.len; i++) { 2382 filter[i].code = tswap16(tfilter[i].code); 2383 filter[i].jt = tfilter[i].jt; 2384 filter[i].jf = tfilter[i].jf; 2385 filter[i].k = tswap32(tfilter[i].k); 2386 } 2387 fprog.filter = filter; 2388 2389 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 2390 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 2391 g_free(filter); 2392 2393 unlock_user_struct(tfilter, tfprog->filter, 1); 2394 unlock_user_struct(tfprog, optval_addr, 1); 2395 return ret; 2396 } 2397 case TARGET_SO_BINDTODEVICE: 2398 { 2399 char *dev_ifname, *addr_ifname; 2400 2401 if (optlen > IFNAMSIZ - 1) { 2402 optlen = IFNAMSIZ - 1; 2403 } 2404 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2405 if (!dev_ifname) { 2406 return -TARGET_EFAULT; 2407 } 2408 optname = SO_BINDTODEVICE; 2409 addr_ifname = alloca(IFNAMSIZ); 2410 memcpy(addr_ifname, dev_ifname, optlen); 2411 addr_ifname[optlen] = 0; 2412 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2413 addr_ifname, optlen)); 2414 unlock_user (dev_ifname, optval_addr, 0); 2415 return ret; 2416 } 2417 case TARGET_SO_LINGER: 2418 { 2419 struct linger lg; 2420 struct target_linger *tlg; 2421 2422 if (optlen != sizeof(struct target_linger)) { 2423 return -TARGET_EINVAL; 2424 } 2425 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) { 2426 return -TARGET_EFAULT; 2427 } 2428 __get_user(lg.l_onoff, &tlg->l_onoff); 2429 __get_user(lg.l_linger, &tlg->l_linger); 2430 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER, 2431 &lg, sizeof(lg))); 2432 unlock_user_struct(tlg, optval_addr, 0); 2433 return ret; 2434 } 2435 /* Options with 'int' argument. */ 2436 case TARGET_SO_DEBUG: 2437 optname = SO_DEBUG; 2438 break; 2439 case TARGET_SO_REUSEADDR: 2440 optname = SO_REUSEADDR; 2441 break; 2442 #ifdef SO_REUSEPORT 2443 case TARGET_SO_REUSEPORT: 2444 optname = SO_REUSEPORT; 2445 break; 2446 #endif 2447 case TARGET_SO_TYPE: 2448 optname = SO_TYPE; 2449 break; 2450 case TARGET_SO_ERROR: 2451 optname = SO_ERROR; 2452 break; 2453 case TARGET_SO_DONTROUTE: 2454 optname = SO_DONTROUTE; 2455 break; 2456 case TARGET_SO_BROADCAST: 2457 optname = SO_BROADCAST; 2458 break; 2459 case TARGET_SO_SNDBUF: 2460 optname = SO_SNDBUF; 2461 break; 2462 case TARGET_SO_SNDBUFFORCE: 2463 optname = SO_SNDBUFFORCE; 2464 break; 2465 case TARGET_SO_RCVBUF: 2466 optname = SO_RCVBUF; 2467 break; 2468 case TARGET_SO_RCVBUFFORCE: 2469 optname = SO_RCVBUFFORCE; 2470 break; 2471 case TARGET_SO_KEEPALIVE: 2472 optname = SO_KEEPALIVE; 2473 break; 2474 case TARGET_SO_OOBINLINE: 2475 optname = SO_OOBINLINE; 2476 break; 2477 case TARGET_SO_NO_CHECK: 2478 optname = SO_NO_CHECK; 2479 break; 2480 case TARGET_SO_PRIORITY: 2481 optname = SO_PRIORITY; 2482 break; 2483 #ifdef SO_BSDCOMPAT 2484 case TARGET_SO_BSDCOMPAT: 2485 optname = SO_BSDCOMPAT; 2486 break; 2487 #endif 2488 case TARGET_SO_PASSCRED: 2489 optname = SO_PASSCRED; 2490 break; 2491 case TARGET_SO_PASSSEC: 2492 optname = SO_PASSSEC; 2493 break; 2494 case TARGET_SO_TIMESTAMP: 2495 optname = SO_TIMESTAMP; 2496 break; 2497 case TARGET_SO_RCVLOWAT: 2498 optname = SO_RCVLOWAT; 2499 break; 2500 default: 2501 goto unimplemented; 2502 } 2503 if (optlen < sizeof(uint32_t)) 2504 return -TARGET_EINVAL; 2505 2506 if (get_user_u32(val, optval_addr)) 2507 return -TARGET_EFAULT; 2508 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 2509 break; 2510 #ifdef SOL_NETLINK 2511 case SOL_NETLINK: 2512 switch (optname) { 2513 case NETLINK_PKTINFO: 2514 case NETLINK_ADD_MEMBERSHIP: 2515 case NETLINK_DROP_MEMBERSHIP: 2516 case NETLINK_BROADCAST_ERROR: 2517 case NETLINK_NO_ENOBUFS: 2518 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2519 case NETLINK_LISTEN_ALL_NSID: 2520 case NETLINK_CAP_ACK: 2521 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2522 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2523 case NETLINK_EXT_ACK: 2524 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2525 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2526 case NETLINK_GET_STRICT_CHK: 2527 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2528 break; 2529 default: 2530 goto unimplemented; 2531 } 2532 val = 0; 2533 if (optlen < sizeof(uint32_t)) { 2534 return -TARGET_EINVAL; 2535 } 2536 if (get_user_u32(val, optval_addr)) { 2537 return -TARGET_EFAULT; 2538 } 2539 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val, 2540 sizeof(val))); 2541 break; 2542 #endif /* SOL_NETLINK */ 2543 default: 2544 unimplemented: 2545 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n", 2546 level, optname); 2547 ret = -TARGET_ENOPROTOOPT; 2548 } 2549 return ret; 2550 } 2551 2552 /* do_getsockopt() Must return target values and target errnos. */ 2553 static abi_long do_getsockopt(int sockfd, int level, int optname, 2554 abi_ulong optval_addr, abi_ulong optlen) 2555 { 2556 abi_long ret; 2557 int len, val; 2558 socklen_t lv; 2559 2560 switch(level) { 2561 case TARGET_SOL_SOCKET: 2562 level = SOL_SOCKET; 2563 switch (optname) { 2564 /* These don't just return a single integer */ 2565 case TARGET_SO_PEERNAME: 2566 goto unimplemented; 2567 case TARGET_SO_RCVTIMEO: { 2568 struct timeval tv; 2569 socklen_t tvlen; 2570 2571 optname = SO_RCVTIMEO; 2572 2573 get_timeout: 2574 if (get_user_u32(len, optlen)) { 2575 return -TARGET_EFAULT; 2576 } 2577 if (len < 0) { 2578 return -TARGET_EINVAL; 2579 } 2580 2581 tvlen = sizeof(tv); 2582 ret = get_errno(getsockopt(sockfd, level, optname, 2583 &tv, &tvlen)); 2584 if (ret < 0) { 2585 return ret; 2586 } 2587 if (len > sizeof(struct target_timeval)) { 2588 len = sizeof(struct target_timeval); 2589 } 2590 if (copy_to_user_timeval(optval_addr, &tv)) { 2591 return -TARGET_EFAULT; 2592 } 2593 if (put_user_u32(len, optlen)) { 2594 return -TARGET_EFAULT; 2595 } 2596 break; 2597 } 2598 case TARGET_SO_SNDTIMEO: 2599 optname = SO_SNDTIMEO; 2600 goto get_timeout; 2601 case TARGET_SO_PEERCRED: { 2602 struct ucred cr; 2603 socklen_t crlen; 2604 struct target_ucred *tcr; 2605 2606 if (get_user_u32(len, optlen)) { 2607 return -TARGET_EFAULT; 2608 } 2609 if (len < 0) { 2610 return -TARGET_EINVAL; 2611 } 2612 2613 crlen = sizeof(cr); 2614 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 2615 &cr, &crlen)); 2616 if (ret < 0) { 2617 return ret; 2618 } 2619 if (len > crlen) { 2620 len = crlen; 2621 } 2622 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 2623 return -TARGET_EFAULT; 2624 } 2625 __put_user(cr.pid, &tcr->pid); 2626 __put_user(cr.uid, &tcr->uid); 2627 __put_user(cr.gid, &tcr->gid); 2628 unlock_user_struct(tcr, optval_addr, 1); 2629 if (put_user_u32(len, optlen)) { 2630 return -TARGET_EFAULT; 2631 } 2632 break; 2633 } 2634 case TARGET_SO_PEERSEC: { 2635 char *name; 2636 2637 if (get_user_u32(len, optlen)) { 2638 return -TARGET_EFAULT; 2639 } 2640 if (len < 0) { 2641 return -TARGET_EINVAL; 2642 } 2643 name = lock_user(VERIFY_WRITE, optval_addr, len, 0); 2644 if (!name) { 2645 return -TARGET_EFAULT; 2646 } 2647 lv = len; 2648 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC, 2649 name, &lv)); 2650 if (put_user_u32(lv, optlen)) { 2651 ret = -TARGET_EFAULT; 2652 } 2653 unlock_user(name, optval_addr, lv); 2654 break; 2655 } 2656 case TARGET_SO_LINGER: 2657 { 2658 struct linger lg; 2659 socklen_t lglen; 2660 struct target_linger *tlg; 2661 2662 if (get_user_u32(len, optlen)) { 2663 return -TARGET_EFAULT; 2664 } 2665 if (len < 0) { 2666 return -TARGET_EINVAL; 2667 } 2668 2669 lglen = sizeof(lg); 2670 ret = get_errno(getsockopt(sockfd, level, SO_LINGER, 2671 &lg, &lglen)); 2672 if (ret < 0) { 2673 return ret; 2674 } 2675 if (len > lglen) { 2676 len = lglen; 2677 } 2678 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) { 2679 return -TARGET_EFAULT; 2680 } 2681 __put_user(lg.l_onoff, &tlg->l_onoff); 2682 __put_user(lg.l_linger, &tlg->l_linger); 2683 unlock_user_struct(tlg, optval_addr, 1); 2684 if (put_user_u32(len, optlen)) { 2685 return -TARGET_EFAULT; 2686 } 2687 break; 2688 } 2689 /* Options with 'int' argument. */ 2690 case TARGET_SO_DEBUG: 2691 optname = SO_DEBUG; 2692 goto int_case; 2693 case TARGET_SO_REUSEADDR: 2694 optname = SO_REUSEADDR; 2695 goto int_case; 2696 #ifdef SO_REUSEPORT 2697 case TARGET_SO_REUSEPORT: 2698 optname = SO_REUSEPORT; 2699 goto int_case; 2700 #endif 2701 case TARGET_SO_TYPE: 2702 optname = SO_TYPE; 2703 goto int_case; 2704 case TARGET_SO_ERROR: 2705 optname = SO_ERROR; 2706 goto int_case; 2707 case TARGET_SO_DONTROUTE: 2708 optname = SO_DONTROUTE; 2709 goto int_case; 2710 case TARGET_SO_BROADCAST: 2711 optname = SO_BROADCAST; 2712 goto int_case; 2713 case TARGET_SO_SNDBUF: 2714 optname = SO_SNDBUF; 2715 goto int_case; 2716 case TARGET_SO_RCVBUF: 2717 optname = SO_RCVBUF; 2718 goto int_case; 2719 case TARGET_SO_KEEPALIVE: 2720 optname = SO_KEEPALIVE; 2721 goto int_case; 2722 case TARGET_SO_OOBINLINE: 2723 optname = SO_OOBINLINE; 2724 goto int_case; 2725 case TARGET_SO_NO_CHECK: 2726 optname = SO_NO_CHECK; 2727 goto int_case; 2728 case TARGET_SO_PRIORITY: 2729 optname = SO_PRIORITY; 2730 goto int_case; 2731 #ifdef SO_BSDCOMPAT 2732 case TARGET_SO_BSDCOMPAT: 2733 optname = SO_BSDCOMPAT; 2734 goto int_case; 2735 #endif 2736 case TARGET_SO_PASSCRED: 2737 optname = SO_PASSCRED; 2738 goto int_case; 2739 case TARGET_SO_TIMESTAMP: 2740 optname = SO_TIMESTAMP; 2741 goto int_case; 2742 case TARGET_SO_RCVLOWAT: 2743 optname = SO_RCVLOWAT; 2744 goto int_case; 2745 case TARGET_SO_ACCEPTCONN: 2746 optname = SO_ACCEPTCONN; 2747 goto int_case; 2748 case TARGET_SO_PROTOCOL: 2749 optname = SO_PROTOCOL; 2750 goto int_case; 2751 case TARGET_SO_DOMAIN: 2752 optname = SO_DOMAIN; 2753 goto int_case; 2754 default: 2755 goto int_case; 2756 } 2757 break; 2758 case SOL_TCP: 2759 case SOL_UDP: 2760 /* TCP and UDP options all take an 'int' value. */ 2761 int_case: 2762 if (get_user_u32(len, optlen)) 2763 return -TARGET_EFAULT; 2764 if (len < 0) 2765 return -TARGET_EINVAL; 2766 lv = sizeof(lv); 2767 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2768 if (ret < 0) 2769 return ret; 2770 if (optname == SO_TYPE) { 2771 val = host_to_target_sock_type(val); 2772 } 2773 if (len > lv) 2774 len = lv; 2775 if (len == 4) { 2776 if (put_user_u32(val, optval_addr)) 2777 return -TARGET_EFAULT; 2778 } else { 2779 if (put_user_u8(val, optval_addr)) 2780 return -TARGET_EFAULT; 2781 } 2782 if (put_user_u32(len, optlen)) 2783 return -TARGET_EFAULT; 2784 break; 2785 case SOL_IP: 2786 switch(optname) { 2787 case IP_TOS: 2788 case IP_TTL: 2789 case IP_HDRINCL: 2790 case IP_ROUTER_ALERT: 2791 case IP_RECVOPTS: 2792 case IP_RETOPTS: 2793 case IP_PKTINFO: 2794 case IP_MTU_DISCOVER: 2795 case IP_RECVERR: 2796 case IP_RECVTOS: 2797 #ifdef IP_FREEBIND 2798 case IP_FREEBIND: 2799 #endif 2800 case IP_MULTICAST_TTL: 2801 case IP_MULTICAST_LOOP: 2802 if (get_user_u32(len, optlen)) 2803 return -TARGET_EFAULT; 2804 if (len < 0) 2805 return -TARGET_EINVAL; 2806 lv = sizeof(lv); 2807 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2808 if (ret < 0) 2809 return ret; 2810 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2811 len = 1; 2812 if (put_user_u32(len, optlen) 2813 || put_user_u8(val, optval_addr)) 2814 return -TARGET_EFAULT; 2815 } else { 2816 if (len > sizeof(int)) 2817 len = sizeof(int); 2818 if (put_user_u32(len, optlen) 2819 || put_user_u32(val, optval_addr)) 2820 return -TARGET_EFAULT; 2821 } 2822 break; 2823 default: 2824 ret = -TARGET_ENOPROTOOPT; 2825 break; 2826 } 2827 break; 2828 case SOL_IPV6: 2829 switch (optname) { 2830 case IPV6_MTU_DISCOVER: 2831 case IPV6_MTU: 2832 case IPV6_V6ONLY: 2833 case IPV6_RECVPKTINFO: 2834 case IPV6_UNICAST_HOPS: 2835 case IPV6_MULTICAST_HOPS: 2836 case IPV6_MULTICAST_LOOP: 2837 case IPV6_RECVERR: 2838 case IPV6_RECVHOPLIMIT: 2839 case IPV6_2292HOPLIMIT: 2840 case IPV6_CHECKSUM: 2841 case IPV6_ADDRFORM: 2842 case IPV6_2292PKTINFO: 2843 case IPV6_RECVTCLASS: 2844 case IPV6_RECVRTHDR: 2845 case IPV6_2292RTHDR: 2846 case IPV6_RECVHOPOPTS: 2847 case IPV6_2292HOPOPTS: 2848 case IPV6_RECVDSTOPTS: 2849 case IPV6_2292DSTOPTS: 2850 case IPV6_TCLASS: 2851 case IPV6_ADDR_PREFERENCES: 2852 #ifdef IPV6_RECVPATHMTU 2853 case IPV6_RECVPATHMTU: 2854 #endif 2855 #ifdef IPV6_TRANSPARENT 2856 case IPV6_TRANSPARENT: 2857 #endif 2858 #ifdef IPV6_FREEBIND 2859 case IPV6_FREEBIND: 2860 #endif 2861 #ifdef IPV6_RECVORIGDSTADDR 2862 case IPV6_RECVORIGDSTADDR: 2863 #endif 2864 if (get_user_u32(len, optlen)) 2865 return -TARGET_EFAULT; 2866 if (len < 0) 2867 return -TARGET_EINVAL; 2868 lv = sizeof(lv); 2869 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2870 if (ret < 0) 2871 return ret; 2872 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2873 len = 1; 2874 if (put_user_u32(len, optlen) 2875 || put_user_u8(val, optval_addr)) 2876 return -TARGET_EFAULT; 2877 } else { 2878 if (len > sizeof(int)) 2879 len = sizeof(int); 2880 if (put_user_u32(len, optlen) 2881 || put_user_u32(val, optval_addr)) 2882 return -TARGET_EFAULT; 2883 } 2884 break; 2885 default: 2886 ret = -TARGET_ENOPROTOOPT; 2887 break; 2888 } 2889 break; 2890 #ifdef SOL_NETLINK 2891 case SOL_NETLINK: 2892 switch (optname) { 2893 case NETLINK_PKTINFO: 2894 case NETLINK_BROADCAST_ERROR: 2895 case NETLINK_NO_ENOBUFS: 2896 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2897 case NETLINK_LISTEN_ALL_NSID: 2898 case NETLINK_CAP_ACK: 2899 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2900 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2901 case NETLINK_EXT_ACK: 2902 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2903 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2904 case NETLINK_GET_STRICT_CHK: 2905 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2906 if (get_user_u32(len, optlen)) { 2907 return -TARGET_EFAULT; 2908 } 2909 if (len != sizeof(val)) { 2910 return -TARGET_EINVAL; 2911 } 2912 lv = len; 2913 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2914 if (ret < 0) { 2915 return ret; 2916 } 2917 if (put_user_u32(lv, optlen) 2918 || put_user_u32(val, optval_addr)) { 2919 return -TARGET_EFAULT; 2920 } 2921 break; 2922 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2923 case NETLINK_LIST_MEMBERSHIPS: 2924 { 2925 uint32_t *results; 2926 int i; 2927 if (get_user_u32(len, optlen)) { 2928 return -TARGET_EFAULT; 2929 } 2930 if (len < 0) { 2931 return -TARGET_EINVAL; 2932 } 2933 results = lock_user(VERIFY_WRITE, optval_addr, len, 1); 2934 if (!results && len > 0) { 2935 return -TARGET_EFAULT; 2936 } 2937 lv = len; 2938 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv)); 2939 if (ret < 0) { 2940 unlock_user(results, optval_addr, 0); 2941 return ret; 2942 } 2943 /* swap host endianess to target endianess. */ 2944 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 2945 results[i] = tswap32(results[i]); 2946 } 2947 if (put_user_u32(lv, optlen)) { 2948 return -TARGET_EFAULT; 2949 } 2950 unlock_user(results, optval_addr, 0); 2951 break; 2952 } 2953 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2954 default: 2955 goto unimplemented; 2956 } 2957 break; 2958 #endif /* SOL_NETLINK */ 2959 default: 2960 unimplemented: 2961 qemu_log_mask(LOG_UNIMP, 2962 "getsockopt level=%d optname=%d not yet supported\n", 2963 level, optname); 2964 ret = -TARGET_EOPNOTSUPP; 2965 break; 2966 } 2967 return ret; 2968 } 2969 2970 /* Convert target low/high pair representing file offset into the host 2971 * low/high pair. This function doesn't handle offsets bigger than 64 bits 2972 * as the kernel doesn't handle them either. 2973 */ 2974 static void target_to_host_low_high(abi_ulong tlow, 2975 abi_ulong thigh, 2976 unsigned long *hlow, 2977 unsigned long *hhigh) 2978 { 2979 uint64_t off = tlow | 2980 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) << 2981 TARGET_LONG_BITS / 2; 2982 2983 *hlow = off; 2984 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2; 2985 } 2986 2987 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 2988 abi_ulong count, int copy) 2989 { 2990 struct target_iovec *target_vec; 2991 struct iovec *vec; 2992 abi_ulong total_len, max_len; 2993 int i; 2994 int err = 0; 2995 bool bad_address = false; 2996 2997 if (count == 0) { 2998 errno = 0; 2999 return NULL; 3000 } 3001 if (count > IOV_MAX) { 3002 errno = EINVAL; 3003 return NULL; 3004 } 3005 3006 vec = g_try_new0(struct iovec, count); 3007 if (vec == NULL) { 3008 errno = ENOMEM; 3009 return NULL; 3010 } 3011 3012 target_vec = lock_user(VERIFY_READ, target_addr, 3013 count * sizeof(struct target_iovec), 1); 3014 if (target_vec == NULL) { 3015 err = EFAULT; 3016 goto fail2; 3017 } 3018 3019 /* ??? If host page size > target page size, this will result in a 3020 value larger than what we can actually support. */ 3021 max_len = 0x7fffffff & TARGET_PAGE_MASK; 3022 total_len = 0; 3023 3024 for (i = 0; i < count; i++) { 3025 abi_ulong base = tswapal(target_vec[i].iov_base); 3026 abi_long len = tswapal(target_vec[i].iov_len); 3027 3028 if (len < 0) { 3029 err = EINVAL; 3030 goto fail; 3031 } else if (len == 0) { 3032 /* Zero length pointer is ignored. */ 3033 vec[i].iov_base = 0; 3034 } else { 3035 vec[i].iov_base = lock_user(type, base, len, copy); 3036 /* If the first buffer pointer is bad, this is a fault. But 3037 * subsequent bad buffers will result in a partial write; this 3038 * is realized by filling the vector with null pointers and 3039 * zero lengths. */ 3040 if (!vec[i].iov_base) { 3041 if (i == 0) { 3042 err = EFAULT; 3043 goto fail; 3044 } else { 3045 bad_address = true; 3046 } 3047 } 3048 if (bad_address) { 3049 len = 0; 3050 } 3051 if (len > max_len - total_len) { 3052 len = max_len - total_len; 3053 } 3054 } 3055 vec[i].iov_len = len; 3056 total_len += len; 3057 } 3058 3059 unlock_user(target_vec, target_addr, 0); 3060 return vec; 3061 3062 fail: 3063 while (--i >= 0) { 3064 if (tswapal(target_vec[i].iov_len) > 0) { 3065 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 3066 } 3067 } 3068 unlock_user(target_vec, target_addr, 0); 3069 fail2: 3070 g_free(vec); 3071 errno = err; 3072 return NULL; 3073 } 3074 3075 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 3076 abi_ulong count, int copy) 3077 { 3078 struct target_iovec *target_vec; 3079 int i; 3080 3081 target_vec = lock_user(VERIFY_READ, target_addr, 3082 count * sizeof(struct target_iovec), 1); 3083 if (target_vec) { 3084 for (i = 0; i < count; i++) { 3085 abi_ulong base = tswapal(target_vec[i].iov_base); 3086 abi_long len = tswapal(target_vec[i].iov_len); 3087 if (len < 0) { 3088 break; 3089 } 3090 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 3091 } 3092 unlock_user(target_vec, target_addr, 0); 3093 } 3094 3095 g_free(vec); 3096 } 3097 3098 static inline int target_to_host_sock_type(int *type) 3099 { 3100 int host_type = 0; 3101 int target_type = *type; 3102 3103 switch (target_type & TARGET_SOCK_TYPE_MASK) { 3104 case TARGET_SOCK_DGRAM: 3105 host_type = SOCK_DGRAM; 3106 break; 3107 case TARGET_SOCK_STREAM: 3108 host_type = SOCK_STREAM; 3109 break; 3110 default: 3111 host_type = target_type & TARGET_SOCK_TYPE_MASK; 3112 break; 3113 } 3114 if (target_type & TARGET_SOCK_CLOEXEC) { 3115 #if defined(SOCK_CLOEXEC) 3116 host_type |= SOCK_CLOEXEC; 3117 #else 3118 return -TARGET_EINVAL; 3119 #endif 3120 } 3121 if (target_type & TARGET_SOCK_NONBLOCK) { 3122 #if defined(SOCK_NONBLOCK) 3123 host_type |= SOCK_NONBLOCK; 3124 #elif !defined(O_NONBLOCK) 3125 return -TARGET_EINVAL; 3126 #endif 3127 } 3128 *type = host_type; 3129 return 0; 3130 } 3131 3132 /* Try to emulate socket type flags after socket creation. */ 3133 static int sock_flags_fixup(int fd, int target_type) 3134 { 3135 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 3136 if (target_type & TARGET_SOCK_NONBLOCK) { 3137 int flags = fcntl(fd, F_GETFL); 3138 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 3139 close(fd); 3140 return -TARGET_EINVAL; 3141 } 3142 } 3143 #endif 3144 return fd; 3145 } 3146 3147 /* do_socket() Must return target values and target errnos. */ 3148 static abi_long do_socket(int domain, int type, int protocol) 3149 { 3150 int target_type = type; 3151 int ret; 3152 3153 ret = target_to_host_sock_type(&type); 3154 if (ret) { 3155 return ret; 3156 } 3157 3158 if (domain == PF_NETLINK && !( 3159 #ifdef CONFIG_RTNETLINK 3160 protocol == NETLINK_ROUTE || 3161 #endif 3162 protocol == NETLINK_KOBJECT_UEVENT || 3163 protocol == NETLINK_AUDIT)) { 3164 return -TARGET_EPROTONOSUPPORT; 3165 } 3166 3167 if (domain == AF_PACKET || 3168 (domain == AF_INET && type == SOCK_PACKET)) { 3169 protocol = tswap16(protocol); 3170 } 3171 3172 ret = get_errno(socket(domain, type, protocol)); 3173 if (ret >= 0) { 3174 ret = sock_flags_fixup(ret, target_type); 3175 if (type == SOCK_PACKET) { 3176 /* Manage an obsolete case : 3177 * if socket type is SOCK_PACKET, bind by name 3178 */ 3179 fd_trans_register(ret, &target_packet_trans); 3180 } else if (domain == PF_NETLINK) { 3181 switch (protocol) { 3182 #ifdef CONFIG_RTNETLINK 3183 case NETLINK_ROUTE: 3184 fd_trans_register(ret, &target_netlink_route_trans); 3185 break; 3186 #endif 3187 case NETLINK_KOBJECT_UEVENT: 3188 /* nothing to do: messages are strings */ 3189 break; 3190 case NETLINK_AUDIT: 3191 fd_trans_register(ret, &target_netlink_audit_trans); 3192 break; 3193 default: 3194 g_assert_not_reached(); 3195 } 3196 } 3197 } 3198 return ret; 3199 } 3200 3201 /* do_bind() Must return target values and target errnos. */ 3202 static abi_long do_bind(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(bind(sockfd, addr, addrlen)); 3219 } 3220 3221 /* do_connect() Must return target values and target errnos. */ 3222 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3223 socklen_t addrlen) 3224 { 3225 void *addr; 3226 abi_long ret; 3227 3228 if ((int)addrlen < 0) { 3229 return -TARGET_EINVAL; 3230 } 3231 3232 addr = alloca(addrlen+1); 3233 3234 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3235 if (ret) 3236 return ret; 3237 3238 return get_errno(safe_connect(sockfd, addr, addrlen)); 3239 } 3240 3241 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3242 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3243 int flags, int send) 3244 { 3245 abi_long ret, len; 3246 struct msghdr msg; 3247 abi_ulong count; 3248 struct iovec *vec; 3249 abi_ulong target_vec; 3250 3251 if (msgp->msg_name) { 3252 msg.msg_namelen = tswap32(msgp->msg_namelen); 3253 msg.msg_name = alloca(msg.msg_namelen+1); 3254 ret = target_to_host_sockaddr(fd, msg.msg_name, 3255 tswapal(msgp->msg_name), 3256 msg.msg_namelen); 3257 if (ret == -TARGET_EFAULT) { 3258 /* For connected sockets msg_name and msg_namelen must 3259 * be ignored, so returning EFAULT immediately is wrong. 3260 * Instead, pass a bad msg_name to the host kernel, and 3261 * let it decide whether to return EFAULT or not. 3262 */ 3263 msg.msg_name = (void *)-1; 3264 } else if (ret) { 3265 goto out2; 3266 } 3267 } else { 3268 msg.msg_name = NULL; 3269 msg.msg_namelen = 0; 3270 } 3271 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3272 msg.msg_control = alloca(msg.msg_controllen); 3273 memset(msg.msg_control, 0, msg.msg_controllen); 3274 3275 msg.msg_flags = tswap32(msgp->msg_flags); 3276 3277 count = tswapal(msgp->msg_iovlen); 3278 target_vec = tswapal(msgp->msg_iov); 3279 3280 if (count > IOV_MAX) { 3281 /* sendrcvmsg returns a different errno for this condition than 3282 * readv/writev, so we must catch it here before lock_iovec() does. 3283 */ 3284 ret = -TARGET_EMSGSIZE; 3285 goto out2; 3286 } 3287 3288 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3289 target_vec, count, send); 3290 if (vec == NULL) { 3291 ret = -host_to_target_errno(errno); 3292 goto out2; 3293 } 3294 msg.msg_iovlen = count; 3295 msg.msg_iov = vec; 3296 3297 if (send) { 3298 if (fd_trans_target_to_host_data(fd)) { 3299 void *host_msg; 3300 3301 host_msg = g_malloc(msg.msg_iov->iov_len); 3302 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3303 ret = fd_trans_target_to_host_data(fd)(host_msg, 3304 msg.msg_iov->iov_len); 3305 if (ret >= 0) { 3306 msg.msg_iov->iov_base = host_msg; 3307 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3308 } 3309 g_free(host_msg); 3310 } else { 3311 ret = target_to_host_cmsg(&msg, msgp); 3312 if (ret == 0) { 3313 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3314 } 3315 } 3316 } else { 3317 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3318 if (!is_error(ret)) { 3319 len = ret; 3320 if (fd_trans_host_to_target_data(fd)) { 3321 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3322 MIN(msg.msg_iov->iov_len, len)); 3323 } else { 3324 ret = host_to_target_cmsg(msgp, &msg); 3325 } 3326 if (!is_error(ret)) { 3327 msgp->msg_namelen = tswap32(msg.msg_namelen); 3328 msgp->msg_flags = tswap32(msg.msg_flags); 3329 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3330 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3331 msg.msg_name, msg.msg_namelen); 3332 if (ret) { 3333 goto out; 3334 } 3335 } 3336 3337 ret = len; 3338 } 3339 } 3340 } 3341 3342 out: 3343 unlock_iovec(vec, target_vec, count, !send); 3344 out2: 3345 return ret; 3346 } 3347 3348 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3349 int flags, int send) 3350 { 3351 abi_long ret; 3352 struct target_msghdr *msgp; 3353 3354 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3355 msgp, 3356 target_msg, 3357 send ? 1 : 0)) { 3358 return -TARGET_EFAULT; 3359 } 3360 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3361 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3362 return ret; 3363 } 3364 3365 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3366 * so it might not have this *mmsg-specific flag either. 3367 */ 3368 #ifndef MSG_WAITFORONE 3369 #define MSG_WAITFORONE 0x10000 3370 #endif 3371 3372 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3373 unsigned int vlen, unsigned int flags, 3374 int send) 3375 { 3376 struct target_mmsghdr *mmsgp; 3377 abi_long ret = 0; 3378 int i; 3379 3380 if (vlen > UIO_MAXIOV) { 3381 vlen = UIO_MAXIOV; 3382 } 3383 3384 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3385 if (!mmsgp) { 3386 return -TARGET_EFAULT; 3387 } 3388 3389 for (i = 0; i < vlen; i++) { 3390 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3391 if (is_error(ret)) { 3392 break; 3393 } 3394 mmsgp[i].msg_len = tswap32(ret); 3395 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3396 if (flags & MSG_WAITFORONE) { 3397 flags |= MSG_DONTWAIT; 3398 } 3399 } 3400 3401 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3402 3403 /* Return number of datagrams sent if we sent any at all; 3404 * otherwise return the error. 3405 */ 3406 if (i) { 3407 return i; 3408 } 3409 return ret; 3410 } 3411 3412 /* do_accept4() Must return target values and target errnos. */ 3413 static abi_long do_accept4(int fd, abi_ulong target_addr, 3414 abi_ulong target_addrlen_addr, int flags) 3415 { 3416 socklen_t addrlen, ret_addrlen; 3417 void *addr; 3418 abi_long ret; 3419 int host_flags; 3420 3421 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 3422 3423 if (target_addr == 0) { 3424 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3425 } 3426 3427 /* linux returns EFAULT if addrlen pointer is invalid */ 3428 if (get_user_u32(addrlen, target_addrlen_addr)) 3429 return -TARGET_EFAULT; 3430 3431 if ((int)addrlen < 0) { 3432 return -TARGET_EINVAL; 3433 } 3434 3435 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3436 return -TARGET_EFAULT; 3437 } 3438 3439 addr = alloca(addrlen); 3440 3441 ret_addrlen = addrlen; 3442 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags)); 3443 if (!is_error(ret)) { 3444 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3445 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3446 ret = -TARGET_EFAULT; 3447 } 3448 } 3449 return ret; 3450 } 3451 3452 /* do_getpeername() Must return target values and target errnos. */ 3453 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3454 abi_ulong target_addrlen_addr) 3455 { 3456 socklen_t addrlen, ret_addrlen; 3457 void *addr; 3458 abi_long ret; 3459 3460 if (get_user_u32(addrlen, target_addrlen_addr)) 3461 return -TARGET_EFAULT; 3462 3463 if ((int)addrlen < 0) { 3464 return -TARGET_EINVAL; 3465 } 3466 3467 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3468 return -TARGET_EFAULT; 3469 } 3470 3471 addr = alloca(addrlen); 3472 3473 ret_addrlen = addrlen; 3474 ret = get_errno(getpeername(fd, addr, &ret_addrlen)); 3475 if (!is_error(ret)) { 3476 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3477 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3478 ret = -TARGET_EFAULT; 3479 } 3480 } 3481 return ret; 3482 } 3483 3484 /* do_getsockname() Must return target values and target errnos. */ 3485 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3486 abi_ulong target_addrlen_addr) 3487 { 3488 socklen_t addrlen, ret_addrlen; 3489 void *addr; 3490 abi_long ret; 3491 3492 if (get_user_u32(addrlen, target_addrlen_addr)) 3493 return -TARGET_EFAULT; 3494 3495 if ((int)addrlen < 0) { 3496 return -TARGET_EINVAL; 3497 } 3498 3499 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3500 return -TARGET_EFAULT; 3501 } 3502 3503 addr = alloca(addrlen); 3504 3505 ret_addrlen = addrlen; 3506 ret = get_errno(getsockname(fd, addr, &ret_addrlen)); 3507 if (!is_error(ret)) { 3508 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3509 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3510 ret = -TARGET_EFAULT; 3511 } 3512 } 3513 return ret; 3514 } 3515 3516 /* do_socketpair() Must return target values and target errnos. */ 3517 static abi_long do_socketpair(int domain, int type, int protocol, 3518 abi_ulong target_tab_addr) 3519 { 3520 int tab[2]; 3521 abi_long ret; 3522 3523 target_to_host_sock_type(&type); 3524 3525 ret = get_errno(socketpair(domain, type, protocol, tab)); 3526 if (!is_error(ret)) { 3527 if (put_user_s32(tab[0], target_tab_addr) 3528 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3529 ret = -TARGET_EFAULT; 3530 } 3531 return ret; 3532 } 3533 3534 /* do_sendto() Must return target values and target errnos. */ 3535 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3536 abi_ulong target_addr, socklen_t addrlen) 3537 { 3538 void *addr; 3539 void *host_msg; 3540 void *copy_msg = NULL; 3541 abi_long ret; 3542 3543 if ((int)addrlen < 0) { 3544 return -TARGET_EINVAL; 3545 } 3546 3547 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3548 if (!host_msg) 3549 return -TARGET_EFAULT; 3550 if (fd_trans_target_to_host_data(fd)) { 3551 copy_msg = host_msg; 3552 host_msg = g_malloc(len); 3553 memcpy(host_msg, copy_msg, len); 3554 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3555 if (ret < 0) { 3556 goto fail; 3557 } 3558 } 3559 if (target_addr) { 3560 addr = alloca(addrlen+1); 3561 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3562 if (ret) { 3563 goto fail; 3564 } 3565 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3566 } else { 3567 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3568 } 3569 fail: 3570 if (copy_msg) { 3571 g_free(host_msg); 3572 host_msg = copy_msg; 3573 } 3574 unlock_user(host_msg, msg, 0); 3575 return ret; 3576 } 3577 3578 /* do_recvfrom() Must return target values and target errnos. */ 3579 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 3580 abi_ulong target_addr, 3581 abi_ulong target_addrlen) 3582 { 3583 socklen_t addrlen, ret_addrlen; 3584 void *addr; 3585 void *host_msg; 3586 abi_long ret; 3587 3588 if (!msg) { 3589 host_msg = NULL; 3590 } else { 3591 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 3592 if (!host_msg) { 3593 return -TARGET_EFAULT; 3594 } 3595 } 3596 if (target_addr) { 3597 if (get_user_u32(addrlen, target_addrlen)) { 3598 ret = -TARGET_EFAULT; 3599 goto fail; 3600 } 3601 if ((int)addrlen < 0) { 3602 ret = -TARGET_EINVAL; 3603 goto fail; 3604 } 3605 addr = alloca(addrlen); 3606 ret_addrlen = addrlen; 3607 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 3608 addr, &ret_addrlen)); 3609 } else { 3610 addr = NULL; /* To keep compiler quiet. */ 3611 addrlen = 0; /* To keep compiler quiet. */ 3612 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 3613 } 3614 if (!is_error(ret)) { 3615 if (fd_trans_host_to_target_data(fd)) { 3616 abi_long trans; 3617 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len)); 3618 if (is_error(trans)) { 3619 ret = trans; 3620 goto fail; 3621 } 3622 } 3623 if (target_addr) { 3624 host_to_target_sockaddr(target_addr, addr, 3625 MIN(addrlen, ret_addrlen)); 3626 if (put_user_u32(ret_addrlen, target_addrlen)) { 3627 ret = -TARGET_EFAULT; 3628 goto fail; 3629 } 3630 } 3631 unlock_user(host_msg, msg, len); 3632 } else { 3633 fail: 3634 unlock_user(host_msg, msg, 0); 3635 } 3636 return ret; 3637 } 3638 3639 #ifdef TARGET_NR_socketcall 3640 /* do_socketcall() must return target values and target errnos. */ 3641 static abi_long do_socketcall(int num, abi_ulong vptr) 3642 { 3643 static const unsigned nargs[] = { /* number of arguments per operation */ 3644 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 3645 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 3646 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 3647 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 3648 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 3649 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 3650 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 3651 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 3652 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 3653 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 3654 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 3655 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 3656 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 3657 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3658 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3659 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 3660 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 3661 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 3662 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 3663 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 3664 }; 3665 abi_long a[6]; /* max 6 args */ 3666 unsigned i; 3667 3668 /* check the range of the first argument num */ 3669 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 3670 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 3671 return -TARGET_EINVAL; 3672 } 3673 /* ensure we have space for args */ 3674 if (nargs[num] > ARRAY_SIZE(a)) { 3675 return -TARGET_EINVAL; 3676 } 3677 /* collect the arguments in a[] according to nargs[] */ 3678 for (i = 0; i < nargs[num]; ++i) { 3679 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 3680 return -TARGET_EFAULT; 3681 } 3682 } 3683 /* now when we have the args, invoke the appropriate underlying function */ 3684 switch (num) { 3685 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 3686 return do_socket(a[0], a[1], a[2]); 3687 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 3688 return do_bind(a[0], a[1], a[2]); 3689 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 3690 return do_connect(a[0], a[1], a[2]); 3691 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 3692 return get_errno(listen(a[0], a[1])); 3693 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 3694 return do_accept4(a[0], a[1], a[2], 0); 3695 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 3696 return do_getsockname(a[0], a[1], a[2]); 3697 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 3698 return do_getpeername(a[0], a[1], a[2]); 3699 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 3700 return do_socketpair(a[0], a[1], a[2], a[3]); 3701 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 3702 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 3703 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 3704 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 3705 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 3706 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 3707 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 3708 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 3709 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 3710 return get_errno(shutdown(a[0], a[1])); 3711 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3712 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 3713 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3714 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 3715 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 3716 return do_sendrecvmsg(a[0], a[1], a[2], 1); 3717 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 3718 return do_sendrecvmsg(a[0], a[1], a[2], 0); 3719 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 3720 return do_accept4(a[0], a[1], a[2], a[3]); 3721 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 3722 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 3723 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 3724 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 3725 default: 3726 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); 3727 return -TARGET_EINVAL; 3728 } 3729 } 3730 #endif 3731 3732 #define N_SHM_REGIONS 32 3733 3734 static struct shm_region { 3735 abi_ulong start; 3736 abi_ulong size; 3737 bool in_use; 3738 } shm_regions[N_SHM_REGIONS]; 3739 3740 #ifndef TARGET_SEMID64_DS 3741 /* asm-generic version of this struct */ 3742 struct target_semid64_ds 3743 { 3744 struct target_ipc_perm sem_perm; 3745 abi_ulong sem_otime; 3746 #if TARGET_ABI_BITS == 32 3747 abi_ulong __unused1; 3748 #endif 3749 abi_ulong sem_ctime; 3750 #if TARGET_ABI_BITS == 32 3751 abi_ulong __unused2; 3752 #endif 3753 abi_ulong sem_nsems; 3754 abi_ulong __unused3; 3755 abi_ulong __unused4; 3756 }; 3757 #endif 3758 3759 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 3760 abi_ulong target_addr) 3761 { 3762 struct target_ipc_perm *target_ip; 3763 struct target_semid64_ds *target_sd; 3764 3765 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3766 return -TARGET_EFAULT; 3767 target_ip = &(target_sd->sem_perm); 3768 host_ip->__key = tswap32(target_ip->__key); 3769 host_ip->uid = tswap32(target_ip->uid); 3770 host_ip->gid = tswap32(target_ip->gid); 3771 host_ip->cuid = tswap32(target_ip->cuid); 3772 host_ip->cgid = tswap32(target_ip->cgid); 3773 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3774 host_ip->mode = tswap32(target_ip->mode); 3775 #else 3776 host_ip->mode = tswap16(target_ip->mode); 3777 #endif 3778 #if defined(TARGET_PPC) 3779 host_ip->__seq = tswap32(target_ip->__seq); 3780 #else 3781 host_ip->__seq = tswap16(target_ip->__seq); 3782 #endif 3783 unlock_user_struct(target_sd, target_addr, 0); 3784 return 0; 3785 } 3786 3787 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 3788 struct ipc_perm *host_ip) 3789 { 3790 struct target_ipc_perm *target_ip; 3791 struct target_semid64_ds *target_sd; 3792 3793 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3794 return -TARGET_EFAULT; 3795 target_ip = &(target_sd->sem_perm); 3796 target_ip->__key = tswap32(host_ip->__key); 3797 target_ip->uid = tswap32(host_ip->uid); 3798 target_ip->gid = tswap32(host_ip->gid); 3799 target_ip->cuid = tswap32(host_ip->cuid); 3800 target_ip->cgid = tswap32(host_ip->cgid); 3801 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3802 target_ip->mode = tswap32(host_ip->mode); 3803 #else 3804 target_ip->mode = tswap16(host_ip->mode); 3805 #endif 3806 #if defined(TARGET_PPC) 3807 target_ip->__seq = tswap32(host_ip->__seq); 3808 #else 3809 target_ip->__seq = tswap16(host_ip->__seq); 3810 #endif 3811 unlock_user_struct(target_sd, target_addr, 1); 3812 return 0; 3813 } 3814 3815 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 3816 abi_ulong target_addr) 3817 { 3818 struct target_semid64_ds *target_sd; 3819 3820 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3821 return -TARGET_EFAULT; 3822 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 3823 return -TARGET_EFAULT; 3824 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 3825 host_sd->sem_otime = tswapal(target_sd->sem_otime); 3826 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 3827 unlock_user_struct(target_sd, target_addr, 0); 3828 return 0; 3829 } 3830 3831 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 3832 struct semid_ds *host_sd) 3833 { 3834 struct target_semid64_ds *target_sd; 3835 3836 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3837 return -TARGET_EFAULT; 3838 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 3839 return -TARGET_EFAULT; 3840 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 3841 target_sd->sem_otime = tswapal(host_sd->sem_otime); 3842 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 3843 unlock_user_struct(target_sd, target_addr, 1); 3844 return 0; 3845 } 3846 3847 struct target_seminfo { 3848 int semmap; 3849 int semmni; 3850 int semmns; 3851 int semmnu; 3852 int semmsl; 3853 int semopm; 3854 int semume; 3855 int semusz; 3856 int semvmx; 3857 int semaem; 3858 }; 3859 3860 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 3861 struct seminfo *host_seminfo) 3862 { 3863 struct target_seminfo *target_seminfo; 3864 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 3865 return -TARGET_EFAULT; 3866 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 3867 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 3868 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 3869 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 3870 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 3871 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 3872 __put_user(host_seminfo->semume, &target_seminfo->semume); 3873 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 3874 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 3875 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 3876 unlock_user_struct(target_seminfo, target_addr, 1); 3877 return 0; 3878 } 3879 3880 union semun { 3881 int val; 3882 struct semid_ds *buf; 3883 unsigned short *array; 3884 struct seminfo *__buf; 3885 }; 3886 3887 union target_semun { 3888 int val; 3889 abi_ulong buf; 3890 abi_ulong array; 3891 abi_ulong __buf; 3892 }; 3893 3894 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 3895 abi_ulong target_addr) 3896 { 3897 int nsems; 3898 unsigned short *array; 3899 union semun semun; 3900 struct semid_ds semid_ds; 3901 int i, ret; 3902 3903 semun.buf = &semid_ds; 3904 3905 ret = semctl(semid, 0, IPC_STAT, semun); 3906 if (ret == -1) 3907 return get_errno(ret); 3908 3909 nsems = semid_ds.sem_nsems; 3910 3911 *host_array = g_try_new(unsigned short, nsems); 3912 if (!*host_array) { 3913 return -TARGET_ENOMEM; 3914 } 3915 array = lock_user(VERIFY_READ, target_addr, 3916 nsems*sizeof(unsigned short), 1); 3917 if (!array) { 3918 g_free(*host_array); 3919 return -TARGET_EFAULT; 3920 } 3921 3922 for(i=0; i<nsems; i++) { 3923 __get_user((*host_array)[i], &array[i]); 3924 } 3925 unlock_user(array, target_addr, 0); 3926 3927 return 0; 3928 } 3929 3930 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 3931 unsigned short **host_array) 3932 { 3933 int nsems; 3934 unsigned short *array; 3935 union semun semun; 3936 struct semid_ds semid_ds; 3937 int i, ret; 3938 3939 semun.buf = &semid_ds; 3940 3941 ret = semctl(semid, 0, IPC_STAT, semun); 3942 if (ret == -1) 3943 return get_errno(ret); 3944 3945 nsems = semid_ds.sem_nsems; 3946 3947 array = lock_user(VERIFY_WRITE, target_addr, 3948 nsems*sizeof(unsigned short), 0); 3949 if (!array) 3950 return -TARGET_EFAULT; 3951 3952 for(i=0; i<nsems; i++) { 3953 __put_user((*host_array)[i], &array[i]); 3954 } 3955 g_free(*host_array); 3956 unlock_user(array, target_addr, 1); 3957 3958 return 0; 3959 } 3960 3961 static inline abi_long do_semctl(int semid, int semnum, int cmd, 3962 abi_ulong target_arg) 3963 { 3964 union target_semun target_su = { .buf = target_arg }; 3965 union semun arg; 3966 struct semid_ds dsarg; 3967 unsigned short *array = NULL; 3968 struct seminfo seminfo; 3969 abi_long ret = -TARGET_EINVAL; 3970 abi_long err; 3971 cmd &= 0xff; 3972 3973 switch( cmd ) { 3974 case GETVAL: 3975 case SETVAL: 3976 /* In 64 bit cross-endian situations, we will erroneously pick up 3977 * the wrong half of the union for the "val" element. To rectify 3978 * this, the entire 8-byte structure is byteswapped, followed by 3979 * a swap of the 4 byte val field. In other cases, the data is 3980 * already in proper host byte order. */ 3981 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 3982 target_su.buf = tswapal(target_su.buf); 3983 arg.val = tswap32(target_su.val); 3984 } else { 3985 arg.val = target_su.val; 3986 } 3987 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3988 break; 3989 case GETALL: 3990 case SETALL: 3991 err = target_to_host_semarray(semid, &array, target_su.array); 3992 if (err) 3993 return err; 3994 arg.array = array; 3995 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3996 err = host_to_target_semarray(semid, target_su.array, &array); 3997 if (err) 3998 return err; 3999 break; 4000 case IPC_STAT: 4001 case IPC_SET: 4002 case SEM_STAT: 4003 err = target_to_host_semid_ds(&dsarg, target_su.buf); 4004 if (err) 4005 return err; 4006 arg.buf = &dsarg; 4007 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4008 err = host_to_target_semid_ds(target_su.buf, &dsarg); 4009 if (err) 4010 return err; 4011 break; 4012 case IPC_INFO: 4013 case SEM_INFO: 4014 arg.__buf = &seminfo; 4015 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4016 err = host_to_target_seminfo(target_su.__buf, &seminfo); 4017 if (err) 4018 return err; 4019 break; 4020 case IPC_RMID: 4021 case GETPID: 4022 case GETNCNT: 4023 case GETZCNT: 4024 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 4025 break; 4026 } 4027 4028 return ret; 4029 } 4030 4031 struct target_sembuf { 4032 unsigned short sem_num; 4033 short sem_op; 4034 short sem_flg; 4035 }; 4036 4037 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 4038 abi_ulong target_addr, 4039 unsigned nsops) 4040 { 4041 struct target_sembuf *target_sembuf; 4042 int i; 4043 4044 target_sembuf = lock_user(VERIFY_READ, target_addr, 4045 nsops*sizeof(struct target_sembuf), 1); 4046 if (!target_sembuf) 4047 return -TARGET_EFAULT; 4048 4049 for(i=0; i<nsops; i++) { 4050 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 4051 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 4052 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 4053 } 4054 4055 unlock_user(target_sembuf, target_addr, 0); 4056 4057 return 0; 4058 } 4059 4060 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \ 4061 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64) 4062 4063 /* 4064 * This macro is required to handle the s390 variants, which passes the 4065 * arguments in a different order than default. 4066 */ 4067 #ifdef __s390x__ 4068 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4069 (__nsops), (__timeout), (__sops) 4070 #else 4071 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4072 (__nsops), 0, (__sops), (__timeout) 4073 #endif 4074 4075 static inline abi_long do_semtimedop(int semid, 4076 abi_long ptr, 4077 unsigned nsops, 4078 abi_long timeout, bool time64) 4079 { 4080 struct sembuf *sops; 4081 struct timespec ts, *pts = NULL; 4082 abi_long ret; 4083 4084 if (timeout) { 4085 pts = &ts; 4086 if (time64) { 4087 if (target_to_host_timespec64(pts, timeout)) { 4088 return -TARGET_EFAULT; 4089 } 4090 } else { 4091 if (target_to_host_timespec(pts, timeout)) { 4092 return -TARGET_EFAULT; 4093 } 4094 } 4095 } 4096 4097 if (nsops > TARGET_SEMOPM) { 4098 return -TARGET_E2BIG; 4099 } 4100 4101 sops = g_new(struct sembuf, nsops); 4102 4103 if (target_to_host_sembuf(sops, ptr, nsops)) { 4104 g_free(sops); 4105 return -TARGET_EFAULT; 4106 } 4107 4108 ret = -TARGET_ENOSYS; 4109 #ifdef __NR_semtimedop 4110 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts)); 4111 #endif 4112 #ifdef __NR_ipc 4113 if (ret == -TARGET_ENOSYS) { 4114 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, 4115 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts))); 4116 } 4117 #endif 4118 g_free(sops); 4119 return ret; 4120 } 4121 #endif 4122 4123 struct target_msqid_ds 4124 { 4125 struct target_ipc_perm msg_perm; 4126 abi_ulong msg_stime; 4127 #if TARGET_ABI_BITS == 32 4128 abi_ulong __unused1; 4129 #endif 4130 abi_ulong msg_rtime; 4131 #if TARGET_ABI_BITS == 32 4132 abi_ulong __unused2; 4133 #endif 4134 abi_ulong msg_ctime; 4135 #if TARGET_ABI_BITS == 32 4136 abi_ulong __unused3; 4137 #endif 4138 abi_ulong __msg_cbytes; 4139 abi_ulong msg_qnum; 4140 abi_ulong msg_qbytes; 4141 abi_ulong msg_lspid; 4142 abi_ulong msg_lrpid; 4143 abi_ulong __unused4; 4144 abi_ulong __unused5; 4145 }; 4146 4147 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 4148 abi_ulong target_addr) 4149 { 4150 struct target_msqid_ds *target_md; 4151 4152 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 4153 return -TARGET_EFAULT; 4154 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 4155 return -TARGET_EFAULT; 4156 host_md->msg_stime = tswapal(target_md->msg_stime); 4157 host_md->msg_rtime = tswapal(target_md->msg_rtime); 4158 host_md->msg_ctime = tswapal(target_md->msg_ctime); 4159 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 4160 host_md->msg_qnum = tswapal(target_md->msg_qnum); 4161 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 4162 host_md->msg_lspid = tswapal(target_md->msg_lspid); 4163 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 4164 unlock_user_struct(target_md, target_addr, 0); 4165 return 0; 4166 } 4167 4168 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 4169 struct msqid_ds *host_md) 4170 { 4171 struct target_msqid_ds *target_md; 4172 4173 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 4174 return -TARGET_EFAULT; 4175 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 4176 return -TARGET_EFAULT; 4177 target_md->msg_stime = tswapal(host_md->msg_stime); 4178 target_md->msg_rtime = tswapal(host_md->msg_rtime); 4179 target_md->msg_ctime = tswapal(host_md->msg_ctime); 4180 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 4181 target_md->msg_qnum = tswapal(host_md->msg_qnum); 4182 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 4183 target_md->msg_lspid = tswapal(host_md->msg_lspid); 4184 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 4185 unlock_user_struct(target_md, target_addr, 1); 4186 return 0; 4187 } 4188 4189 struct target_msginfo { 4190 int msgpool; 4191 int msgmap; 4192 int msgmax; 4193 int msgmnb; 4194 int msgmni; 4195 int msgssz; 4196 int msgtql; 4197 unsigned short int msgseg; 4198 }; 4199 4200 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 4201 struct msginfo *host_msginfo) 4202 { 4203 struct target_msginfo *target_msginfo; 4204 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 4205 return -TARGET_EFAULT; 4206 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 4207 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 4208 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 4209 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 4210 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 4211 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 4212 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 4213 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 4214 unlock_user_struct(target_msginfo, target_addr, 1); 4215 return 0; 4216 } 4217 4218 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 4219 { 4220 struct msqid_ds dsarg; 4221 struct msginfo msginfo; 4222 abi_long ret = -TARGET_EINVAL; 4223 4224 cmd &= 0xff; 4225 4226 switch (cmd) { 4227 case IPC_STAT: 4228 case IPC_SET: 4229 case MSG_STAT: 4230 if (target_to_host_msqid_ds(&dsarg,ptr)) 4231 return -TARGET_EFAULT; 4232 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4233 if (host_to_target_msqid_ds(ptr,&dsarg)) 4234 return -TARGET_EFAULT; 4235 break; 4236 case IPC_RMID: 4237 ret = get_errno(msgctl(msgid, cmd, NULL)); 4238 break; 4239 case IPC_INFO: 4240 case MSG_INFO: 4241 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4242 if (host_to_target_msginfo(ptr, &msginfo)) 4243 return -TARGET_EFAULT; 4244 break; 4245 } 4246 4247 return ret; 4248 } 4249 4250 struct target_msgbuf { 4251 abi_long mtype; 4252 char mtext[1]; 4253 }; 4254 4255 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4256 ssize_t msgsz, int msgflg) 4257 { 4258 struct target_msgbuf *target_mb; 4259 struct msgbuf *host_mb; 4260 abi_long ret = 0; 4261 4262 if (msgsz < 0) { 4263 return -TARGET_EINVAL; 4264 } 4265 4266 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4267 return -TARGET_EFAULT; 4268 host_mb = g_try_malloc(msgsz + sizeof(long)); 4269 if (!host_mb) { 4270 unlock_user_struct(target_mb, msgp, 0); 4271 return -TARGET_ENOMEM; 4272 } 4273 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4274 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4275 ret = -TARGET_ENOSYS; 4276 #ifdef __NR_msgsnd 4277 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4278 #endif 4279 #ifdef __NR_ipc 4280 if (ret == -TARGET_ENOSYS) { 4281 #ifdef __s390x__ 4282 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4283 host_mb)); 4284 #else 4285 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4286 host_mb, 0)); 4287 #endif 4288 } 4289 #endif 4290 g_free(host_mb); 4291 unlock_user_struct(target_mb, msgp, 0); 4292 4293 return ret; 4294 } 4295 4296 #ifdef __NR_ipc 4297 #if defined(__sparc__) 4298 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */ 4299 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp 4300 #elif defined(__s390x__) 4301 /* The s390 sys_ipc variant has only five parameters. */ 4302 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4303 ((long int[]){(long int)__msgp, __msgtyp}) 4304 #else 4305 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4306 ((long int[]){(long int)__msgp, __msgtyp}), 0 4307 #endif 4308 #endif 4309 4310 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4311 ssize_t msgsz, abi_long msgtyp, 4312 int msgflg) 4313 { 4314 struct target_msgbuf *target_mb; 4315 char *target_mtext; 4316 struct msgbuf *host_mb; 4317 abi_long ret = 0; 4318 4319 if (msgsz < 0) { 4320 return -TARGET_EINVAL; 4321 } 4322 4323 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4324 return -TARGET_EFAULT; 4325 4326 host_mb = g_try_malloc(msgsz + sizeof(long)); 4327 if (!host_mb) { 4328 ret = -TARGET_ENOMEM; 4329 goto end; 4330 } 4331 ret = -TARGET_ENOSYS; 4332 #ifdef __NR_msgrcv 4333 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4334 #endif 4335 #ifdef __NR_ipc 4336 if (ret == -TARGET_ENOSYS) { 4337 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz, 4338 msgflg, MSGRCV_ARGS(host_mb, msgtyp))); 4339 } 4340 #endif 4341 4342 if (ret > 0) { 4343 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4344 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4345 if (!target_mtext) { 4346 ret = -TARGET_EFAULT; 4347 goto end; 4348 } 4349 memcpy(target_mb->mtext, host_mb->mtext, ret); 4350 unlock_user(target_mtext, target_mtext_addr, ret); 4351 } 4352 4353 target_mb->mtype = tswapal(host_mb->mtype); 4354 4355 end: 4356 if (target_mb) 4357 unlock_user_struct(target_mb, msgp, 1); 4358 g_free(host_mb); 4359 return ret; 4360 } 4361 4362 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4363 abi_ulong target_addr) 4364 { 4365 struct target_shmid_ds *target_sd; 4366 4367 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4368 return -TARGET_EFAULT; 4369 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4370 return -TARGET_EFAULT; 4371 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4372 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4373 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4374 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4375 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4376 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4377 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4378 unlock_user_struct(target_sd, target_addr, 0); 4379 return 0; 4380 } 4381 4382 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4383 struct shmid_ds *host_sd) 4384 { 4385 struct target_shmid_ds *target_sd; 4386 4387 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4388 return -TARGET_EFAULT; 4389 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4390 return -TARGET_EFAULT; 4391 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4392 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4393 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4394 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4395 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4396 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4397 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4398 unlock_user_struct(target_sd, target_addr, 1); 4399 return 0; 4400 } 4401 4402 struct target_shminfo { 4403 abi_ulong shmmax; 4404 abi_ulong shmmin; 4405 abi_ulong shmmni; 4406 abi_ulong shmseg; 4407 abi_ulong shmall; 4408 }; 4409 4410 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4411 struct shminfo *host_shminfo) 4412 { 4413 struct target_shminfo *target_shminfo; 4414 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4415 return -TARGET_EFAULT; 4416 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4417 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4418 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4419 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4420 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4421 unlock_user_struct(target_shminfo, target_addr, 1); 4422 return 0; 4423 } 4424 4425 struct target_shm_info { 4426 int used_ids; 4427 abi_ulong shm_tot; 4428 abi_ulong shm_rss; 4429 abi_ulong shm_swp; 4430 abi_ulong swap_attempts; 4431 abi_ulong swap_successes; 4432 }; 4433 4434 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4435 struct shm_info *host_shm_info) 4436 { 4437 struct target_shm_info *target_shm_info; 4438 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4439 return -TARGET_EFAULT; 4440 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4441 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4442 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4443 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4444 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4445 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4446 unlock_user_struct(target_shm_info, target_addr, 1); 4447 return 0; 4448 } 4449 4450 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4451 { 4452 struct shmid_ds dsarg; 4453 struct shminfo shminfo; 4454 struct shm_info shm_info; 4455 abi_long ret = -TARGET_EINVAL; 4456 4457 cmd &= 0xff; 4458 4459 switch(cmd) { 4460 case IPC_STAT: 4461 case IPC_SET: 4462 case SHM_STAT: 4463 if (target_to_host_shmid_ds(&dsarg, buf)) 4464 return -TARGET_EFAULT; 4465 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4466 if (host_to_target_shmid_ds(buf, &dsarg)) 4467 return -TARGET_EFAULT; 4468 break; 4469 case IPC_INFO: 4470 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4471 if (host_to_target_shminfo(buf, &shminfo)) 4472 return -TARGET_EFAULT; 4473 break; 4474 case SHM_INFO: 4475 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4476 if (host_to_target_shm_info(buf, &shm_info)) 4477 return -TARGET_EFAULT; 4478 break; 4479 case IPC_RMID: 4480 case SHM_LOCK: 4481 case SHM_UNLOCK: 4482 ret = get_errno(shmctl(shmid, cmd, NULL)); 4483 break; 4484 } 4485 4486 return ret; 4487 } 4488 4489 #ifndef TARGET_FORCE_SHMLBA 4490 /* For most architectures, SHMLBA is the same as the page size; 4491 * some architectures have larger values, in which case they should 4492 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4493 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4494 * and defining its own value for SHMLBA. 4495 * 4496 * The kernel also permits SHMLBA to be set by the architecture to a 4497 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4498 * this means that addresses are rounded to the large size if 4499 * SHM_RND is set but addresses not aligned to that size are not rejected 4500 * as long as they are at least page-aligned. Since the only architecture 4501 * which uses this is ia64 this code doesn't provide for that oddity. 4502 */ 4503 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4504 { 4505 return TARGET_PAGE_SIZE; 4506 } 4507 #endif 4508 4509 static inline abi_ulong do_shmat(CPUArchState *cpu_env, 4510 int shmid, abi_ulong shmaddr, int shmflg) 4511 { 4512 CPUState *cpu = env_cpu(cpu_env); 4513 abi_long raddr; 4514 void *host_raddr; 4515 struct shmid_ds shm_info; 4516 int i,ret; 4517 abi_ulong shmlba; 4518 4519 /* shmat pointers are always untagged */ 4520 4521 /* find out the length of the shared memory segment */ 4522 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4523 if (is_error(ret)) { 4524 /* can't get length, bail out */ 4525 return ret; 4526 } 4527 4528 shmlba = target_shmlba(cpu_env); 4529 4530 if (shmaddr & (shmlba - 1)) { 4531 if (shmflg & SHM_RND) { 4532 shmaddr &= ~(shmlba - 1); 4533 } else { 4534 return -TARGET_EINVAL; 4535 } 4536 } 4537 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { 4538 return -TARGET_EINVAL; 4539 } 4540 4541 mmap_lock(); 4542 4543 /* 4544 * We're mapping shared memory, so ensure we generate code for parallel 4545 * execution and flush old translations. This will work up to the level 4546 * supported by the host -- anything that requires EXCP_ATOMIC will not 4547 * be atomic with respect to an external process. 4548 */ 4549 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 4550 cpu->tcg_cflags |= CF_PARALLEL; 4551 tb_flush(cpu); 4552 } 4553 4554 if (shmaddr) 4555 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); 4556 else { 4557 abi_ulong mmap_start; 4558 4559 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4560 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4561 4562 if (mmap_start == -1) { 4563 errno = ENOMEM; 4564 host_raddr = (void *)-1; 4565 } else 4566 host_raddr = shmat(shmid, g2h_untagged(mmap_start), 4567 shmflg | SHM_REMAP); 4568 } 4569 4570 if (host_raddr == (void *)-1) { 4571 mmap_unlock(); 4572 return get_errno((long)host_raddr); 4573 } 4574 raddr=h2g((unsigned long)host_raddr); 4575 4576 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4577 PAGE_VALID | PAGE_RESET | PAGE_READ | 4578 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); 4579 4580 for (i = 0; i < N_SHM_REGIONS; i++) { 4581 if (!shm_regions[i].in_use) { 4582 shm_regions[i].in_use = true; 4583 shm_regions[i].start = raddr; 4584 shm_regions[i].size = shm_info.shm_segsz; 4585 break; 4586 } 4587 } 4588 4589 mmap_unlock(); 4590 return raddr; 4591 4592 } 4593 4594 static inline abi_long do_shmdt(abi_ulong shmaddr) 4595 { 4596 int i; 4597 abi_long rv; 4598 4599 /* shmdt pointers are always untagged */ 4600 4601 mmap_lock(); 4602 4603 for (i = 0; i < N_SHM_REGIONS; ++i) { 4604 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4605 shm_regions[i].in_use = false; 4606 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4607 break; 4608 } 4609 } 4610 rv = get_errno(shmdt(g2h_untagged(shmaddr))); 4611 4612 mmap_unlock(); 4613 4614 return rv; 4615 } 4616 4617 #ifdef TARGET_NR_ipc 4618 /* ??? This only works with linear mappings. */ 4619 /* do_ipc() must return target values and target errnos. */ 4620 static abi_long do_ipc(CPUArchState *cpu_env, 4621 unsigned int call, abi_long first, 4622 abi_long second, abi_long third, 4623 abi_long ptr, abi_long fifth) 4624 { 4625 int version; 4626 abi_long ret = 0; 4627 4628 version = call >> 16; 4629 call &= 0xffff; 4630 4631 switch (call) { 4632 case IPCOP_semop: 4633 ret = do_semtimedop(first, ptr, second, 0, false); 4634 break; 4635 case IPCOP_semtimedop: 4636 /* 4637 * The s390 sys_ipc variant has only five parameters instead of six 4638 * (as for default variant) and the only difference is the handling of 4639 * SEMTIMEDOP where on s390 the third parameter is used as a pointer 4640 * to a struct timespec where the generic variant uses fifth parameter. 4641 */ 4642 #if defined(TARGET_S390X) 4643 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64); 4644 #else 4645 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64); 4646 #endif 4647 break; 4648 4649 case IPCOP_semget: 4650 ret = get_errno(semget(first, second, third)); 4651 break; 4652 4653 case IPCOP_semctl: { 4654 /* The semun argument to semctl is passed by value, so dereference the 4655 * ptr argument. */ 4656 abi_ulong atptr; 4657 get_user_ual(atptr, ptr); 4658 ret = do_semctl(first, second, third, atptr); 4659 break; 4660 } 4661 4662 case IPCOP_msgget: 4663 ret = get_errno(msgget(first, second)); 4664 break; 4665 4666 case IPCOP_msgsnd: 4667 ret = do_msgsnd(first, ptr, second, third); 4668 break; 4669 4670 case IPCOP_msgctl: 4671 ret = do_msgctl(first, second, ptr); 4672 break; 4673 4674 case IPCOP_msgrcv: 4675 switch (version) { 4676 case 0: 4677 { 4678 struct target_ipc_kludge { 4679 abi_long msgp; 4680 abi_long msgtyp; 4681 } *tmp; 4682 4683 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4684 ret = -TARGET_EFAULT; 4685 break; 4686 } 4687 4688 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4689 4690 unlock_user_struct(tmp, ptr, 0); 4691 break; 4692 } 4693 default: 4694 ret = do_msgrcv(first, ptr, second, fifth, third); 4695 } 4696 break; 4697 4698 case IPCOP_shmat: 4699 switch (version) { 4700 default: 4701 { 4702 abi_ulong raddr; 4703 raddr = do_shmat(cpu_env, first, ptr, second); 4704 if (is_error(raddr)) 4705 return get_errno(raddr); 4706 if (put_user_ual(raddr, third)) 4707 return -TARGET_EFAULT; 4708 break; 4709 } 4710 case 1: 4711 ret = -TARGET_EINVAL; 4712 break; 4713 } 4714 break; 4715 case IPCOP_shmdt: 4716 ret = do_shmdt(ptr); 4717 break; 4718 4719 case IPCOP_shmget: 4720 /* IPC_* flag values are the same on all linux platforms */ 4721 ret = get_errno(shmget(first, second, third)); 4722 break; 4723 4724 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4725 case IPCOP_shmctl: 4726 ret = do_shmctl(first, second, ptr); 4727 break; 4728 default: 4729 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4730 call, version); 4731 ret = -TARGET_ENOSYS; 4732 break; 4733 } 4734 return ret; 4735 } 4736 #endif 4737 4738 /* kernel structure types definitions */ 4739 4740 #define STRUCT(name, ...) STRUCT_ ## name, 4741 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4742 enum { 4743 #include "syscall_types.h" 4744 STRUCT_MAX 4745 }; 4746 #undef STRUCT 4747 #undef STRUCT_SPECIAL 4748 4749 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4750 #define STRUCT_SPECIAL(name) 4751 #include "syscall_types.h" 4752 #undef STRUCT 4753 #undef STRUCT_SPECIAL 4754 4755 #define MAX_STRUCT_SIZE 4096 4756 4757 #ifdef CONFIG_FIEMAP 4758 /* So fiemap access checks don't overflow on 32 bit systems. 4759 * This is very slightly smaller than the limit imposed by 4760 * the underlying kernel. 4761 */ 4762 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4763 / sizeof(struct fiemap_extent)) 4764 4765 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4766 int fd, int cmd, abi_long arg) 4767 { 4768 /* The parameter for this ioctl is a struct fiemap followed 4769 * by an array of struct fiemap_extent whose size is set 4770 * in fiemap->fm_extent_count. The array is filled in by the 4771 * ioctl. 4772 */ 4773 int target_size_in, target_size_out; 4774 struct fiemap *fm; 4775 const argtype *arg_type = ie->arg_type; 4776 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4777 void *argptr, *p; 4778 abi_long ret; 4779 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4780 uint32_t outbufsz; 4781 int free_fm = 0; 4782 4783 assert(arg_type[0] == TYPE_PTR); 4784 assert(ie->access == IOC_RW); 4785 arg_type++; 4786 target_size_in = thunk_type_size(arg_type, 0); 4787 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4788 if (!argptr) { 4789 return -TARGET_EFAULT; 4790 } 4791 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4792 unlock_user(argptr, arg, 0); 4793 fm = (struct fiemap *)buf_temp; 4794 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4795 return -TARGET_EINVAL; 4796 } 4797 4798 outbufsz = sizeof (*fm) + 4799 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4800 4801 if (outbufsz > MAX_STRUCT_SIZE) { 4802 /* We can't fit all the extents into the fixed size buffer. 4803 * Allocate one that is large enough and use it instead. 4804 */ 4805 fm = g_try_malloc(outbufsz); 4806 if (!fm) { 4807 return -TARGET_ENOMEM; 4808 } 4809 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4810 free_fm = 1; 4811 } 4812 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4813 if (!is_error(ret)) { 4814 target_size_out = target_size_in; 4815 /* An extent_count of 0 means we were only counting the extents 4816 * so there are no structs to copy 4817 */ 4818 if (fm->fm_extent_count != 0) { 4819 target_size_out += fm->fm_mapped_extents * extent_size; 4820 } 4821 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4822 if (!argptr) { 4823 ret = -TARGET_EFAULT; 4824 } else { 4825 /* Convert the struct fiemap */ 4826 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4827 if (fm->fm_extent_count != 0) { 4828 p = argptr + target_size_in; 4829 /* ...and then all the struct fiemap_extents */ 4830 for (i = 0; i < fm->fm_mapped_extents; i++) { 4831 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4832 THUNK_TARGET); 4833 p += extent_size; 4834 } 4835 } 4836 unlock_user(argptr, arg, target_size_out); 4837 } 4838 } 4839 if (free_fm) { 4840 g_free(fm); 4841 } 4842 return ret; 4843 } 4844 #endif 4845 4846 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4847 int fd, int cmd, abi_long arg) 4848 { 4849 const argtype *arg_type = ie->arg_type; 4850 int target_size; 4851 void *argptr; 4852 int ret; 4853 struct ifconf *host_ifconf; 4854 uint32_t outbufsz; 4855 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4856 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) }; 4857 int target_ifreq_size; 4858 int nb_ifreq; 4859 int free_buf = 0; 4860 int i; 4861 int target_ifc_len; 4862 abi_long target_ifc_buf; 4863 int host_ifc_len; 4864 char *host_ifc_buf; 4865 4866 assert(arg_type[0] == TYPE_PTR); 4867 assert(ie->access == IOC_RW); 4868 4869 arg_type++; 4870 target_size = thunk_type_size(arg_type, 0); 4871 4872 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4873 if (!argptr) 4874 return -TARGET_EFAULT; 4875 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4876 unlock_user(argptr, arg, 0); 4877 4878 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4879 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4880 target_ifreq_size = thunk_type_size(ifreq_max_type, 0); 4881 4882 if (target_ifc_buf != 0) { 4883 target_ifc_len = host_ifconf->ifc_len; 4884 nb_ifreq = target_ifc_len / target_ifreq_size; 4885 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4886 4887 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4888 if (outbufsz > MAX_STRUCT_SIZE) { 4889 /* 4890 * We can't fit all the extents into the fixed size buffer. 4891 * Allocate one that is large enough and use it instead. 4892 */ 4893 host_ifconf = g_try_malloc(outbufsz); 4894 if (!host_ifconf) { 4895 return -TARGET_ENOMEM; 4896 } 4897 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4898 free_buf = 1; 4899 } 4900 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4901 4902 host_ifconf->ifc_len = host_ifc_len; 4903 } else { 4904 host_ifc_buf = NULL; 4905 } 4906 host_ifconf->ifc_buf = host_ifc_buf; 4907 4908 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 4909 if (!is_error(ret)) { 4910 /* convert host ifc_len to target ifc_len */ 4911 4912 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 4913 target_ifc_len = nb_ifreq * target_ifreq_size; 4914 host_ifconf->ifc_len = target_ifc_len; 4915 4916 /* restore target ifc_buf */ 4917 4918 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 4919 4920 /* copy struct ifconf to target user */ 4921 4922 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 4923 if (!argptr) 4924 return -TARGET_EFAULT; 4925 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 4926 unlock_user(argptr, arg, target_size); 4927 4928 if (target_ifc_buf != 0) { 4929 /* copy ifreq[] to target user */ 4930 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 4931 for (i = 0; i < nb_ifreq ; i++) { 4932 thunk_convert(argptr + i * target_ifreq_size, 4933 host_ifc_buf + i * sizeof(struct ifreq), 4934 ifreq_arg_type, THUNK_TARGET); 4935 } 4936 unlock_user(argptr, target_ifc_buf, target_ifc_len); 4937 } 4938 } 4939 4940 if (free_buf) { 4941 g_free(host_ifconf); 4942 } 4943 4944 return ret; 4945 } 4946 4947 #if defined(CONFIG_USBFS) 4948 #if HOST_LONG_BITS > 64 4949 #error USBDEVFS thunks do not support >64 bit hosts yet. 4950 #endif 4951 struct live_urb { 4952 uint64_t target_urb_adr; 4953 uint64_t target_buf_adr; 4954 char *target_buf_ptr; 4955 struct usbdevfs_urb host_urb; 4956 }; 4957 4958 static GHashTable *usbdevfs_urb_hashtable(void) 4959 { 4960 static GHashTable *urb_hashtable; 4961 4962 if (!urb_hashtable) { 4963 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 4964 } 4965 return urb_hashtable; 4966 } 4967 4968 static void urb_hashtable_insert(struct live_urb *urb) 4969 { 4970 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4971 g_hash_table_insert(urb_hashtable, urb, urb); 4972 } 4973 4974 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 4975 { 4976 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4977 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 4978 } 4979 4980 static void urb_hashtable_remove(struct live_urb *urb) 4981 { 4982 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4983 g_hash_table_remove(urb_hashtable, urb); 4984 } 4985 4986 static abi_long 4987 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 4988 int fd, int cmd, abi_long arg) 4989 { 4990 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 4991 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 4992 struct live_urb *lurb; 4993 void *argptr; 4994 uint64_t hurb; 4995 int target_size; 4996 uintptr_t target_urb_adr; 4997 abi_long ret; 4998 4999 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 5000 5001 memset(buf_temp, 0, sizeof(uint64_t)); 5002 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5003 if (is_error(ret)) { 5004 return ret; 5005 } 5006 5007 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 5008 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 5009 if (!lurb->target_urb_adr) { 5010 return -TARGET_EFAULT; 5011 } 5012 urb_hashtable_remove(lurb); 5013 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 5014 lurb->host_urb.buffer_length); 5015 lurb->target_buf_ptr = NULL; 5016 5017 /* restore the guest buffer pointer */ 5018 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 5019 5020 /* update the guest urb struct */ 5021 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 5022 if (!argptr) { 5023 g_free(lurb); 5024 return -TARGET_EFAULT; 5025 } 5026 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 5027 unlock_user(argptr, lurb->target_urb_adr, target_size); 5028 5029 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 5030 /* write back the urb handle */ 5031 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5032 if (!argptr) { 5033 g_free(lurb); 5034 return -TARGET_EFAULT; 5035 } 5036 5037 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 5038 target_urb_adr = lurb->target_urb_adr; 5039 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 5040 unlock_user(argptr, arg, target_size); 5041 5042 g_free(lurb); 5043 return ret; 5044 } 5045 5046 static abi_long 5047 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 5048 uint8_t *buf_temp __attribute__((unused)), 5049 int fd, int cmd, abi_long arg) 5050 { 5051 struct live_urb *lurb; 5052 5053 /* map target address back to host URB with metadata. */ 5054 lurb = urb_hashtable_lookup(arg); 5055 if (!lurb) { 5056 return -TARGET_EFAULT; 5057 } 5058 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5059 } 5060 5061 static abi_long 5062 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 5063 int fd, int cmd, abi_long arg) 5064 { 5065 const argtype *arg_type = ie->arg_type; 5066 int target_size; 5067 abi_long ret; 5068 void *argptr; 5069 int rw_dir; 5070 struct live_urb *lurb; 5071 5072 /* 5073 * each submitted URB needs to map to a unique ID for the 5074 * kernel, and that unique ID needs to be a pointer to 5075 * host memory. hence, we need to malloc for each URB. 5076 * isochronous transfers have a variable length struct. 5077 */ 5078 arg_type++; 5079 target_size = thunk_type_size(arg_type, THUNK_TARGET); 5080 5081 /* construct host copy of urb and metadata */ 5082 lurb = g_try_new0(struct live_urb, 1); 5083 if (!lurb) { 5084 return -TARGET_ENOMEM; 5085 } 5086 5087 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5088 if (!argptr) { 5089 g_free(lurb); 5090 return -TARGET_EFAULT; 5091 } 5092 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 5093 unlock_user(argptr, arg, 0); 5094 5095 lurb->target_urb_adr = arg; 5096 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 5097 5098 /* buffer space used depends on endpoint type so lock the entire buffer */ 5099 /* control type urbs should check the buffer contents for true direction */ 5100 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 5101 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 5102 lurb->host_urb.buffer_length, 1); 5103 if (lurb->target_buf_ptr == NULL) { 5104 g_free(lurb); 5105 return -TARGET_EFAULT; 5106 } 5107 5108 /* update buffer pointer in host copy */ 5109 lurb->host_urb.buffer = lurb->target_buf_ptr; 5110 5111 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5112 if (is_error(ret)) { 5113 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 5114 g_free(lurb); 5115 } else { 5116 urb_hashtable_insert(lurb); 5117 } 5118 5119 return ret; 5120 } 5121 #endif /* CONFIG_USBFS */ 5122 5123 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5124 int cmd, abi_long arg) 5125 { 5126 void *argptr; 5127 struct dm_ioctl *host_dm; 5128 abi_long guest_data; 5129 uint32_t guest_data_size; 5130 int target_size; 5131 const argtype *arg_type = ie->arg_type; 5132 abi_long ret; 5133 void *big_buf = NULL; 5134 char *host_data; 5135 5136 arg_type++; 5137 target_size = thunk_type_size(arg_type, 0); 5138 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5139 if (!argptr) { 5140 ret = -TARGET_EFAULT; 5141 goto out; 5142 } 5143 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5144 unlock_user(argptr, arg, 0); 5145 5146 /* buf_temp is too small, so fetch things into a bigger buffer */ 5147 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5148 memcpy(big_buf, buf_temp, target_size); 5149 buf_temp = big_buf; 5150 host_dm = big_buf; 5151 5152 guest_data = arg + host_dm->data_start; 5153 if ((guest_data - arg) < 0) { 5154 ret = -TARGET_EINVAL; 5155 goto out; 5156 } 5157 guest_data_size = host_dm->data_size - host_dm->data_start; 5158 host_data = (char*)host_dm + host_dm->data_start; 5159 5160 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5161 if (!argptr) { 5162 ret = -TARGET_EFAULT; 5163 goto out; 5164 } 5165 5166 switch (ie->host_cmd) { 5167 case DM_REMOVE_ALL: 5168 case DM_LIST_DEVICES: 5169 case DM_DEV_CREATE: 5170 case DM_DEV_REMOVE: 5171 case DM_DEV_SUSPEND: 5172 case DM_DEV_STATUS: 5173 case DM_DEV_WAIT: 5174 case DM_TABLE_STATUS: 5175 case DM_TABLE_CLEAR: 5176 case DM_TABLE_DEPS: 5177 case DM_LIST_VERSIONS: 5178 /* no input data */ 5179 break; 5180 case DM_DEV_RENAME: 5181 case DM_DEV_SET_GEOMETRY: 5182 /* data contains only strings */ 5183 memcpy(host_data, argptr, guest_data_size); 5184 break; 5185 case DM_TARGET_MSG: 5186 memcpy(host_data, argptr, guest_data_size); 5187 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5188 break; 5189 case DM_TABLE_LOAD: 5190 { 5191 void *gspec = argptr; 5192 void *cur_data = host_data; 5193 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5194 int spec_size = thunk_type_size(arg_type, 0); 5195 int i; 5196 5197 for (i = 0; i < host_dm->target_count; i++) { 5198 struct dm_target_spec *spec = cur_data; 5199 uint32_t next; 5200 int slen; 5201 5202 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5203 slen = strlen((char*)gspec + spec_size) + 1; 5204 next = spec->next; 5205 spec->next = sizeof(*spec) + slen; 5206 strcpy((char*)&spec[1], gspec + spec_size); 5207 gspec += next; 5208 cur_data += spec->next; 5209 } 5210 break; 5211 } 5212 default: 5213 ret = -TARGET_EINVAL; 5214 unlock_user(argptr, guest_data, 0); 5215 goto out; 5216 } 5217 unlock_user(argptr, guest_data, 0); 5218 5219 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5220 if (!is_error(ret)) { 5221 guest_data = arg + host_dm->data_start; 5222 guest_data_size = host_dm->data_size - host_dm->data_start; 5223 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5224 switch (ie->host_cmd) { 5225 case DM_REMOVE_ALL: 5226 case DM_DEV_CREATE: 5227 case DM_DEV_REMOVE: 5228 case DM_DEV_RENAME: 5229 case DM_DEV_SUSPEND: 5230 case DM_DEV_STATUS: 5231 case DM_TABLE_LOAD: 5232 case DM_TABLE_CLEAR: 5233 case DM_TARGET_MSG: 5234 case DM_DEV_SET_GEOMETRY: 5235 /* no return data */ 5236 break; 5237 case DM_LIST_DEVICES: 5238 { 5239 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5240 uint32_t remaining_data = guest_data_size; 5241 void *cur_data = argptr; 5242 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5243 int nl_size = 12; /* can't use thunk_size due to alignment */ 5244 5245 while (1) { 5246 uint32_t next = nl->next; 5247 if (next) { 5248 nl->next = nl_size + (strlen(nl->name) + 1); 5249 } 5250 if (remaining_data < nl->next) { 5251 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5252 break; 5253 } 5254 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5255 strcpy(cur_data + nl_size, nl->name); 5256 cur_data += nl->next; 5257 remaining_data -= nl->next; 5258 if (!next) { 5259 break; 5260 } 5261 nl = (void*)nl + next; 5262 } 5263 break; 5264 } 5265 case DM_DEV_WAIT: 5266 case DM_TABLE_STATUS: 5267 { 5268 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5269 void *cur_data = argptr; 5270 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5271 int spec_size = thunk_type_size(arg_type, 0); 5272 int i; 5273 5274 for (i = 0; i < host_dm->target_count; i++) { 5275 uint32_t next = spec->next; 5276 int slen = strlen((char*)&spec[1]) + 1; 5277 spec->next = (cur_data - argptr) + spec_size + slen; 5278 if (guest_data_size < spec->next) { 5279 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5280 break; 5281 } 5282 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5283 strcpy(cur_data + spec_size, (char*)&spec[1]); 5284 cur_data = argptr + spec->next; 5285 spec = (void*)host_dm + host_dm->data_start + next; 5286 } 5287 break; 5288 } 5289 case DM_TABLE_DEPS: 5290 { 5291 void *hdata = (void*)host_dm + host_dm->data_start; 5292 int count = *(uint32_t*)hdata; 5293 uint64_t *hdev = hdata + 8; 5294 uint64_t *gdev = argptr + 8; 5295 int i; 5296 5297 *(uint32_t*)argptr = tswap32(count); 5298 for (i = 0; i < count; i++) { 5299 *gdev = tswap64(*hdev); 5300 gdev++; 5301 hdev++; 5302 } 5303 break; 5304 } 5305 case DM_LIST_VERSIONS: 5306 { 5307 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5308 uint32_t remaining_data = guest_data_size; 5309 void *cur_data = argptr; 5310 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5311 int vers_size = thunk_type_size(arg_type, 0); 5312 5313 while (1) { 5314 uint32_t next = vers->next; 5315 if (next) { 5316 vers->next = vers_size + (strlen(vers->name) + 1); 5317 } 5318 if (remaining_data < vers->next) { 5319 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5320 break; 5321 } 5322 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5323 strcpy(cur_data + vers_size, vers->name); 5324 cur_data += vers->next; 5325 remaining_data -= vers->next; 5326 if (!next) { 5327 break; 5328 } 5329 vers = (void*)vers + next; 5330 } 5331 break; 5332 } 5333 default: 5334 unlock_user(argptr, guest_data, 0); 5335 ret = -TARGET_EINVAL; 5336 goto out; 5337 } 5338 unlock_user(argptr, guest_data, guest_data_size); 5339 5340 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5341 if (!argptr) { 5342 ret = -TARGET_EFAULT; 5343 goto out; 5344 } 5345 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5346 unlock_user(argptr, arg, target_size); 5347 } 5348 out: 5349 g_free(big_buf); 5350 return ret; 5351 } 5352 5353 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5354 int cmd, abi_long arg) 5355 { 5356 void *argptr; 5357 int target_size; 5358 const argtype *arg_type = ie->arg_type; 5359 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5360 abi_long ret; 5361 5362 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5363 struct blkpg_partition host_part; 5364 5365 /* Read and convert blkpg */ 5366 arg_type++; 5367 target_size = thunk_type_size(arg_type, 0); 5368 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5369 if (!argptr) { 5370 ret = -TARGET_EFAULT; 5371 goto out; 5372 } 5373 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5374 unlock_user(argptr, arg, 0); 5375 5376 switch (host_blkpg->op) { 5377 case BLKPG_ADD_PARTITION: 5378 case BLKPG_DEL_PARTITION: 5379 /* payload is struct blkpg_partition */ 5380 break; 5381 default: 5382 /* Unknown opcode */ 5383 ret = -TARGET_EINVAL; 5384 goto out; 5385 } 5386 5387 /* Read and convert blkpg->data */ 5388 arg = (abi_long)(uintptr_t)host_blkpg->data; 5389 target_size = thunk_type_size(part_arg_type, 0); 5390 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5391 if (!argptr) { 5392 ret = -TARGET_EFAULT; 5393 goto out; 5394 } 5395 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5396 unlock_user(argptr, arg, 0); 5397 5398 /* Swizzle the data pointer to our local copy and call! */ 5399 host_blkpg->data = &host_part; 5400 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5401 5402 out: 5403 return ret; 5404 } 5405 5406 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5407 int fd, int cmd, abi_long arg) 5408 { 5409 const argtype *arg_type = ie->arg_type; 5410 const StructEntry *se; 5411 const argtype *field_types; 5412 const int *dst_offsets, *src_offsets; 5413 int target_size; 5414 void *argptr; 5415 abi_ulong *target_rt_dev_ptr = NULL; 5416 unsigned long *host_rt_dev_ptr = NULL; 5417 abi_long ret; 5418 int i; 5419 5420 assert(ie->access == IOC_W); 5421 assert(*arg_type == TYPE_PTR); 5422 arg_type++; 5423 assert(*arg_type == TYPE_STRUCT); 5424 target_size = thunk_type_size(arg_type, 0); 5425 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5426 if (!argptr) { 5427 return -TARGET_EFAULT; 5428 } 5429 arg_type++; 5430 assert(*arg_type == (int)STRUCT_rtentry); 5431 se = struct_entries + *arg_type++; 5432 assert(se->convert[0] == NULL); 5433 /* convert struct here to be able to catch rt_dev string */ 5434 field_types = se->field_types; 5435 dst_offsets = se->field_offsets[THUNK_HOST]; 5436 src_offsets = se->field_offsets[THUNK_TARGET]; 5437 for (i = 0; i < se->nb_fields; i++) { 5438 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5439 assert(*field_types == TYPE_PTRVOID); 5440 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5441 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5442 if (*target_rt_dev_ptr != 0) { 5443 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5444 tswapal(*target_rt_dev_ptr)); 5445 if (!*host_rt_dev_ptr) { 5446 unlock_user(argptr, arg, 0); 5447 return -TARGET_EFAULT; 5448 } 5449 } else { 5450 *host_rt_dev_ptr = 0; 5451 } 5452 field_types++; 5453 continue; 5454 } 5455 field_types = thunk_convert(buf_temp + dst_offsets[i], 5456 argptr + src_offsets[i], 5457 field_types, THUNK_HOST); 5458 } 5459 unlock_user(argptr, arg, 0); 5460 5461 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5462 5463 assert(host_rt_dev_ptr != NULL); 5464 assert(target_rt_dev_ptr != NULL); 5465 if (*host_rt_dev_ptr != 0) { 5466 unlock_user((void *)*host_rt_dev_ptr, 5467 *target_rt_dev_ptr, 0); 5468 } 5469 return ret; 5470 } 5471 5472 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5473 int fd, int cmd, abi_long arg) 5474 { 5475 int sig = target_to_host_signal(arg); 5476 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5477 } 5478 5479 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5480 int fd, int cmd, abi_long arg) 5481 { 5482 struct timeval tv; 5483 abi_long ret; 5484 5485 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5486 if (is_error(ret)) { 5487 return ret; 5488 } 5489 5490 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5491 if (copy_to_user_timeval(arg, &tv)) { 5492 return -TARGET_EFAULT; 5493 } 5494 } else { 5495 if (copy_to_user_timeval64(arg, &tv)) { 5496 return -TARGET_EFAULT; 5497 } 5498 } 5499 5500 return ret; 5501 } 5502 5503 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5504 int fd, int cmd, abi_long arg) 5505 { 5506 struct timespec ts; 5507 abi_long ret; 5508 5509 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5510 if (is_error(ret)) { 5511 return ret; 5512 } 5513 5514 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5515 if (host_to_target_timespec(arg, &ts)) { 5516 return -TARGET_EFAULT; 5517 } 5518 } else{ 5519 if (host_to_target_timespec64(arg, &ts)) { 5520 return -TARGET_EFAULT; 5521 } 5522 } 5523 5524 return ret; 5525 } 5526 5527 #ifdef TIOCGPTPEER 5528 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5529 int fd, int cmd, abi_long arg) 5530 { 5531 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5532 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5533 } 5534 #endif 5535 5536 #ifdef HAVE_DRM_H 5537 5538 static void unlock_drm_version(struct drm_version *host_ver, 5539 struct target_drm_version *target_ver, 5540 bool copy) 5541 { 5542 unlock_user(host_ver->name, target_ver->name, 5543 copy ? host_ver->name_len : 0); 5544 unlock_user(host_ver->date, target_ver->date, 5545 copy ? host_ver->date_len : 0); 5546 unlock_user(host_ver->desc, target_ver->desc, 5547 copy ? host_ver->desc_len : 0); 5548 } 5549 5550 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, 5551 struct target_drm_version *target_ver) 5552 { 5553 memset(host_ver, 0, sizeof(*host_ver)); 5554 5555 __get_user(host_ver->name_len, &target_ver->name_len); 5556 if (host_ver->name_len) { 5557 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name, 5558 target_ver->name_len, 0); 5559 if (!host_ver->name) { 5560 return -EFAULT; 5561 } 5562 } 5563 5564 __get_user(host_ver->date_len, &target_ver->date_len); 5565 if (host_ver->date_len) { 5566 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date, 5567 target_ver->date_len, 0); 5568 if (!host_ver->date) { 5569 goto err; 5570 } 5571 } 5572 5573 __get_user(host_ver->desc_len, &target_ver->desc_len); 5574 if (host_ver->desc_len) { 5575 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc, 5576 target_ver->desc_len, 0); 5577 if (!host_ver->desc) { 5578 goto err; 5579 } 5580 } 5581 5582 return 0; 5583 err: 5584 unlock_drm_version(host_ver, target_ver, false); 5585 return -EFAULT; 5586 } 5587 5588 static inline void host_to_target_drmversion( 5589 struct target_drm_version *target_ver, 5590 struct drm_version *host_ver) 5591 { 5592 __put_user(host_ver->version_major, &target_ver->version_major); 5593 __put_user(host_ver->version_minor, &target_ver->version_minor); 5594 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel); 5595 __put_user(host_ver->name_len, &target_ver->name_len); 5596 __put_user(host_ver->date_len, &target_ver->date_len); 5597 __put_user(host_ver->desc_len, &target_ver->desc_len); 5598 unlock_drm_version(host_ver, target_ver, true); 5599 } 5600 5601 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, 5602 int fd, int cmd, abi_long arg) 5603 { 5604 struct drm_version *ver; 5605 struct target_drm_version *target_ver; 5606 abi_long ret; 5607 5608 switch (ie->host_cmd) { 5609 case DRM_IOCTL_VERSION: 5610 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) { 5611 return -TARGET_EFAULT; 5612 } 5613 ver = (struct drm_version *)buf_temp; 5614 ret = target_to_host_drmversion(ver, target_ver); 5615 if (!is_error(ret)) { 5616 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); 5617 if (is_error(ret)) { 5618 unlock_drm_version(ver, target_ver, false); 5619 } else { 5620 host_to_target_drmversion(target_ver, ver); 5621 } 5622 } 5623 unlock_user_struct(target_ver, arg, 0); 5624 return ret; 5625 } 5626 return -TARGET_ENOSYS; 5627 } 5628 5629 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie, 5630 struct drm_i915_getparam *gparam, 5631 int fd, abi_long arg) 5632 { 5633 abi_long ret; 5634 int value; 5635 struct target_drm_i915_getparam *target_gparam; 5636 5637 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) { 5638 return -TARGET_EFAULT; 5639 } 5640 5641 __get_user(gparam->param, &target_gparam->param); 5642 gparam->value = &value; 5643 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam)); 5644 put_user_s32(value, target_gparam->value); 5645 5646 unlock_user_struct(target_gparam, arg, 0); 5647 return ret; 5648 } 5649 5650 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp, 5651 int fd, int cmd, abi_long arg) 5652 { 5653 switch (ie->host_cmd) { 5654 case DRM_IOCTL_I915_GETPARAM: 5655 return do_ioctl_drm_i915_getparam(ie, 5656 (struct drm_i915_getparam *)buf_temp, 5657 fd, arg); 5658 default: 5659 return -TARGET_ENOSYS; 5660 } 5661 } 5662 5663 #endif 5664 5665 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp, 5666 int fd, int cmd, abi_long arg) 5667 { 5668 struct tun_filter *filter = (struct tun_filter *)buf_temp; 5669 struct tun_filter *target_filter; 5670 char *target_addr; 5671 5672 assert(ie->access == IOC_W); 5673 5674 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1); 5675 if (!target_filter) { 5676 return -TARGET_EFAULT; 5677 } 5678 filter->flags = tswap16(target_filter->flags); 5679 filter->count = tswap16(target_filter->count); 5680 unlock_user(target_filter, arg, 0); 5681 5682 if (filter->count) { 5683 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN > 5684 MAX_STRUCT_SIZE) { 5685 return -TARGET_EFAULT; 5686 } 5687 5688 target_addr = lock_user(VERIFY_READ, 5689 arg + offsetof(struct tun_filter, addr), 5690 filter->count * ETH_ALEN, 1); 5691 if (!target_addr) { 5692 return -TARGET_EFAULT; 5693 } 5694 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN); 5695 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0); 5696 } 5697 5698 return get_errno(safe_ioctl(fd, ie->host_cmd, filter)); 5699 } 5700 5701 IOCTLEntry ioctl_entries[] = { 5702 #define IOCTL(cmd, access, ...) \ 5703 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5704 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5705 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5706 #define IOCTL_IGNORE(cmd) \ 5707 { TARGET_ ## cmd, 0, #cmd }, 5708 #include "ioctls.h" 5709 { 0, 0, }, 5710 }; 5711 5712 /* ??? Implement proper locking for ioctls. */ 5713 /* do_ioctl() Must return target values and target errnos. */ 5714 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5715 { 5716 const IOCTLEntry *ie; 5717 const argtype *arg_type; 5718 abi_long ret; 5719 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5720 int target_size; 5721 void *argptr; 5722 5723 ie = ioctl_entries; 5724 for(;;) { 5725 if (ie->target_cmd == 0) { 5726 qemu_log_mask( 5727 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5728 return -TARGET_ENOSYS; 5729 } 5730 if (ie->target_cmd == cmd) 5731 break; 5732 ie++; 5733 } 5734 arg_type = ie->arg_type; 5735 if (ie->do_ioctl) { 5736 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5737 } else if (!ie->host_cmd) { 5738 /* Some architectures define BSD ioctls in their headers 5739 that are not implemented in Linux. */ 5740 return -TARGET_ENOSYS; 5741 } 5742 5743 switch(arg_type[0]) { 5744 case TYPE_NULL: 5745 /* no argument */ 5746 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5747 break; 5748 case TYPE_PTRVOID: 5749 case TYPE_INT: 5750 case TYPE_LONG: 5751 case TYPE_ULONG: 5752 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5753 break; 5754 case TYPE_PTR: 5755 arg_type++; 5756 target_size = thunk_type_size(arg_type, 0); 5757 switch(ie->access) { 5758 case IOC_R: 5759 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5760 if (!is_error(ret)) { 5761 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5762 if (!argptr) 5763 return -TARGET_EFAULT; 5764 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5765 unlock_user(argptr, arg, target_size); 5766 } 5767 break; 5768 case IOC_W: 5769 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5770 if (!argptr) 5771 return -TARGET_EFAULT; 5772 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5773 unlock_user(argptr, arg, 0); 5774 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5775 break; 5776 default: 5777 case IOC_RW: 5778 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5779 if (!argptr) 5780 return -TARGET_EFAULT; 5781 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5782 unlock_user(argptr, arg, 0); 5783 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5784 if (!is_error(ret)) { 5785 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5786 if (!argptr) 5787 return -TARGET_EFAULT; 5788 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5789 unlock_user(argptr, arg, target_size); 5790 } 5791 break; 5792 } 5793 break; 5794 default: 5795 qemu_log_mask(LOG_UNIMP, 5796 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5797 (long)cmd, arg_type[0]); 5798 ret = -TARGET_ENOSYS; 5799 break; 5800 } 5801 return ret; 5802 } 5803 5804 static const bitmask_transtbl iflag_tbl[] = { 5805 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5806 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5807 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5808 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5809 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5810 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5811 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5812 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5813 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5814 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5815 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5816 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5817 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5818 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5819 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8}, 5820 { 0, 0, 0, 0 } 5821 }; 5822 5823 static const bitmask_transtbl oflag_tbl[] = { 5824 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5825 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5826 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5827 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5828 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5829 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5830 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5831 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5832 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5833 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5834 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5835 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5836 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5837 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5838 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5839 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5840 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5841 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5842 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5843 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5844 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5845 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5846 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5847 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5848 { 0, 0, 0, 0 } 5849 }; 5850 5851 static const bitmask_transtbl cflag_tbl[] = { 5852 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5853 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5854 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5855 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5856 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5857 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5858 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5859 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5860 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5861 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5862 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5863 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5864 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5865 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5866 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5867 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5868 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5869 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5870 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5871 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5872 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5873 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5874 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5875 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5876 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5877 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5878 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5879 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5880 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5881 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5882 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5883 { 0, 0, 0, 0 } 5884 }; 5885 5886 static const bitmask_transtbl lflag_tbl[] = { 5887 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5888 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5889 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5890 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5891 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5892 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5893 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5894 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5895 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5896 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5897 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5898 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5899 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5900 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5901 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5902 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC}, 5903 { 0, 0, 0, 0 } 5904 }; 5905 5906 static void target_to_host_termios (void *dst, const void *src) 5907 { 5908 struct host_termios *host = dst; 5909 const struct target_termios *target = src; 5910 5911 host->c_iflag = 5912 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5913 host->c_oflag = 5914 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5915 host->c_cflag = 5916 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5917 host->c_lflag = 5918 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 5919 host->c_line = target->c_line; 5920 5921 memset(host->c_cc, 0, sizeof(host->c_cc)); 5922 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 5923 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 5924 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 5925 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 5926 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 5927 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 5928 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 5929 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 5930 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 5931 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 5932 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 5933 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 5934 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 5935 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 5936 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 5937 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 5938 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 5939 } 5940 5941 static void host_to_target_termios (void *dst, const void *src) 5942 { 5943 struct target_termios *target = dst; 5944 const struct host_termios *host = src; 5945 5946 target->c_iflag = 5947 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 5948 target->c_oflag = 5949 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 5950 target->c_cflag = 5951 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 5952 target->c_lflag = 5953 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 5954 target->c_line = host->c_line; 5955 5956 memset(target->c_cc, 0, sizeof(target->c_cc)); 5957 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 5958 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 5959 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 5960 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 5961 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 5962 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 5963 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 5964 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 5965 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 5966 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 5967 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 5968 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 5969 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 5970 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 5971 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 5972 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 5973 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 5974 } 5975 5976 static const StructEntry struct_termios_def = { 5977 .convert = { host_to_target_termios, target_to_host_termios }, 5978 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 5979 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 5980 .print = print_termios, 5981 }; 5982 5983 static const bitmask_transtbl mmap_flags_tbl[] = { 5984 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 5985 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 5986 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 5987 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 5988 MAP_ANONYMOUS, MAP_ANONYMOUS }, 5989 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 5990 MAP_GROWSDOWN, MAP_GROWSDOWN }, 5991 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 5992 MAP_DENYWRITE, MAP_DENYWRITE }, 5993 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 5994 MAP_EXECUTABLE, MAP_EXECUTABLE }, 5995 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 5996 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 5997 MAP_NORESERVE, MAP_NORESERVE }, 5998 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 5999 /* MAP_STACK had been ignored by the kernel for quite some time. 6000 Recognize it for the target insofar as we do not want to pass 6001 it through to the host. */ 6002 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 6003 { 0, 0, 0, 0 } 6004 }; 6005 6006 /* 6007 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 6008 * TARGET_I386 is defined if TARGET_X86_64 is defined 6009 */ 6010 #if defined(TARGET_I386) 6011 6012 /* NOTE: there is really one LDT for all the threads */ 6013 static uint8_t *ldt_table; 6014 6015 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 6016 { 6017 int size; 6018 void *p; 6019 6020 if (!ldt_table) 6021 return 0; 6022 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 6023 if (size > bytecount) 6024 size = bytecount; 6025 p = lock_user(VERIFY_WRITE, ptr, size, 0); 6026 if (!p) 6027 return -TARGET_EFAULT; 6028 /* ??? Should this by byteswapped? */ 6029 memcpy(p, ldt_table, size); 6030 unlock_user(p, ptr, size); 6031 return size; 6032 } 6033 6034 /* XXX: add locking support */ 6035 static abi_long write_ldt(CPUX86State *env, 6036 abi_ulong ptr, unsigned long bytecount, int oldmode) 6037 { 6038 struct target_modify_ldt_ldt_s ldt_info; 6039 struct target_modify_ldt_ldt_s *target_ldt_info; 6040 int seg_32bit, contents, read_exec_only, limit_in_pages; 6041 int seg_not_present, useable, lm; 6042 uint32_t *lp, entry_1, entry_2; 6043 6044 if (bytecount != sizeof(ldt_info)) 6045 return -TARGET_EINVAL; 6046 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 6047 return -TARGET_EFAULT; 6048 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6049 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6050 ldt_info.limit = tswap32(target_ldt_info->limit); 6051 ldt_info.flags = tswap32(target_ldt_info->flags); 6052 unlock_user_struct(target_ldt_info, ptr, 0); 6053 6054 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 6055 return -TARGET_EINVAL; 6056 seg_32bit = ldt_info.flags & 1; 6057 contents = (ldt_info.flags >> 1) & 3; 6058 read_exec_only = (ldt_info.flags >> 3) & 1; 6059 limit_in_pages = (ldt_info.flags >> 4) & 1; 6060 seg_not_present = (ldt_info.flags >> 5) & 1; 6061 useable = (ldt_info.flags >> 6) & 1; 6062 #ifdef TARGET_ABI32 6063 lm = 0; 6064 #else 6065 lm = (ldt_info.flags >> 7) & 1; 6066 #endif 6067 if (contents == 3) { 6068 if (oldmode) 6069 return -TARGET_EINVAL; 6070 if (seg_not_present == 0) 6071 return -TARGET_EINVAL; 6072 } 6073 /* allocate the LDT */ 6074 if (!ldt_table) { 6075 env->ldt.base = target_mmap(0, 6076 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 6077 PROT_READ|PROT_WRITE, 6078 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 6079 if (env->ldt.base == -1) 6080 return -TARGET_ENOMEM; 6081 memset(g2h_untagged(env->ldt.base), 0, 6082 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 6083 env->ldt.limit = 0xffff; 6084 ldt_table = g2h_untagged(env->ldt.base); 6085 } 6086 6087 /* NOTE: same code as Linux kernel */ 6088 /* Allow LDTs to be cleared by the user. */ 6089 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6090 if (oldmode || 6091 (contents == 0 && 6092 read_exec_only == 1 && 6093 seg_32bit == 0 && 6094 limit_in_pages == 0 && 6095 seg_not_present == 1 && 6096 useable == 0 )) { 6097 entry_1 = 0; 6098 entry_2 = 0; 6099 goto install; 6100 } 6101 } 6102 6103 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6104 (ldt_info.limit & 0x0ffff); 6105 entry_2 = (ldt_info.base_addr & 0xff000000) | 6106 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6107 (ldt_info.limit & 0xf0000) | 6108 ((read_exec_only ^ 1) << 9) | 6109 (contents << 10) | 6110 ((seg_not_present ^ 1) << 15) | 6111 (seg_32bit << 22) | 6112 (limit_in_pages << 23) | 6113 (lm << 21) | 6114 0x7000; 6115 if (!oldmode) 6116 entry_2 |= (useable << 20); 6117 6118 /* Install the new entry ... */ 6119 install: 6120 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 6121 lp[0] = tswap32(entry_1); 6122 lp[1] = tswap32(entry_2); 6123 return 0; 6124 } 6125 6126 /* specific and weird i386 syscalls */ 6127 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6128 unsigned long bytecount) 6129 { 6130 abi_long ret; 6131 6132 switch (func) { 6133 case 0: 6134 ret = read_ldt(ptr, bytecount); 6135 break; 6136 case 1: 6137 ret = write_ldt(env, ptr, bytecount, 1); 6138 break; 6139 case 0x11: 6140 ret = write_ldt(env, ptr, bytecount, 0); 6141 break; 6142 default: 6143 ret = -TARGET_ENOSYS; 6144 break; 6145 } 6146 return ret; 6147 } 6148 6149 #if defined(TARGET_ABI32) 6150 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6151 { 6152 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6153 struct target_modify_ldt_ldt_s ldt_info; 6154 struct target_modify_ldt_ldt_s *target_ldt_info; 6155 int seg_32bit, contents, read_exec_only, limit_in_pages; 6156 int seg_not_present, useable, lm; 6157 uint32_t *lp, entry_1, entry_2; 6158 int i; 6159 6160 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6161 if (!target_ldt_info) 6162 return -TARGET_EFAULT; 6163 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6164 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6165 ldt_info.limit = tswap32(target_ldt_info->limit); 6166 ldt_info.flags = tswap32(target_ldt_info->flags); 6167 if (ldt_info.entry_number == -1) { 6168 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6169 if (gdt_table[i] == 0) { 6170 ldt_info.entry_number = i; 6171 target_ldt_info->entry_number = tswap32(i); 6172 break; 6173 } 6174 } 6175 } 6176 unlock_user_struct(target_ldt_info, ptr, 1); 6177 6178 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6179 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6180 return -TARGET_EINVAL; 6181 seg_32bit = ldt_info.flags & 1; 6182 contents = (ldt_info.flags >> 1) & 3; 6183 read_exec_only = (ldt_info.flags >> 3) & 1; 6184 limit_in_pages = (ldt_info.flags >> 4) & 1; 6185 seg_not_present = (ldt_info.flags >> 5) & 1; 6186 useable = (ldt_info.flags >> 6) & 1; 6187 #ifdef TARGET_ABI32 6188 lm = 0; 6189 #else 6190 lm = (ldt_info.flags >> 7) & 1; 6191 #endif 6192 6193 if (contents == 3) { 6194 if (seg_not_present == 0) 6195 return -TARGET_EINVAL; 6196 } 6197 6198 /* NOTE: same code as Linux kernel */ 6199 /* Allow LDTs to be cleared by the user. */ 6200 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6201 if ((contents == 0 && 6202 read_exec_only == 1 && 6203 seg_32bit == 0 && 6204 limit_in_pages == 0 && 6205 seg_not_present == 1 && 6206 useable == 0 )) { 6207 entry_1 = 0; 6208 entry_2 = 0; 6209 goto install; 6210 } 6211 } 6212 6213 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6214 (ldt_info.limit & 0x0ffff); 6215 entry_2 = (ldt_info.base_addr & 0xff000000) | 6216 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6217 (ldt_info.limit & 0xf0000) | 6218 ((read_exec_only ^ 1) << 9) | 6219 (contents << 10) | 6220 ((seg_not_present ^ 1) << 15) | 6221 (seg_32bit << 22) | 6222 (limit_in_pages << 23) | 6223 (useable << 20) | 6224 (lm << 21) | 6225 0x7000; 6226 6227 /* Install the new entry ... */ 6228 install: 6229 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6230 lp[0] = tswap32(entry_1); 6231 lp[1] = tswap32(entry_2); 6232 return 0; 6233 } 6234 6235 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6236 { 6237 struct target_modify_ldt_ldt_s *target_ldt_info; 6238 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6239 uint32_t base_addr, limit, flags; 6240 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6241 int seg_not_present, useable, lm; 6242 uint32_t *lp, entry_1, entry_2; 6243 6244 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6245 if (!target_ldt_info) 6246 return -TARGET_EFAULT; 6247 idx = tswap32(target_ldt_info->entry_number); 6248 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6249 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6250 unlock_user_struct(target_ldt_info, ptr, 1); 6251 return -TARGET_EINVAL; 6252 } 6253 lp = (uint32_t *)(gdt_table + idx); 6254 entry_1 = tswap32(lp[0]); 6255 entry_2 = tswap32(lp[1]); 6256 6257 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6258 contents = (entry_2 >> 10) & 3; 6259 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6260 seg_32bit = (entry_2 >> 22) & 1; 6261 limit_in_pages = (entry_2 >> 23) & 1; 6262 useable = (entry_2 >> 20) & 1; 6263 #ifdef TARGET_ABI32 6264 lm = 0; 6265 #else 6266 lm = (entry_2 >> 21) & 1; 6267 #endif 6268 flags = (seg_32bit << 0) | (contents << 1) | 6269 (read_exec_only << 3) | (limit_in_pages << 4) | 6270 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6271 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6272 base_addr = (entry_1 >> 16) | 6273 (entry_2 & 0xff000000) | 6274 ((entry_2 & 0xff) << 16); 6275 target_ldt_info->base_addr = tswapal(base_addr); 6276 target_ldt_info->limit = tswap32(limit); 6277 target_ldt_info->flags = tswap32(flags); 6278 unlock_user_struct(target_ldt_info, ptr, 1); 6279 return 0; 6280 } 6281 6282 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6283 { 6284 return -TARGET_ENOSYS; 6285 } 6286 #else 6287 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6288 { 6289 abi_long ret = 0; 6290 abi_ulong val; 6291 int idx; 6292 6293 switch(code) { 6294 case TARGET_ARCH_SET_GS: 6295 case TARGET_ARCH_SET_FS: 6296 if (code == TARGET_ARCH_SET_GS) 6297 idx = R_GS; 6298 else 6299 idx = R_FS; 6300 cpu_x86_load_seg(env, idx, 0); 6301 env->segs[idx].base = addr; 6302 break; 6303 case TARGET_ARCH_GET_GS: 6304 case TARGET_ARCH_GET_FS: 6305 if (code == TARGET_ARCH_GET_GS) 6306 idx = R_GS; 6307 else 6308 idx = R_FS; 6309 val = env->segs[idx].base; 6310 if (put_user(val, addr, abi_ulong)) 6311 ret = -TARGET_EFAULT; 6312 break; 6313 default: 6314 ret = -TARGET_EINVAL; 6315 break; 6316 } 6317 return ret; 6318 } 6319 #endif /* defined(TARGET_ABI32 */ 6320 #endif /* defined(TARGET_I386) */ 6321 6322 /* 6323 * These constants are generic. Supply any that are missing from the host. 6324 */ 6325 #ifndef PR_SET_NAME 6326 # define PR_SET_NAME 15 6327 # define PR_GET_NAME 16 6328 #endif 6329 #ifndef PR_SET_FP_MODE 6330 # define PR_SET_FP_MODE 45 6331 # define PR_GET_FP_MODE 46 6332 # define PR_FP_MODE_FR (1 << 0) 6333 # define PR_FP_MODE_FRE (1 << 1) 6334 #endif 6335 #ifndef PR_SVE_SET_VL 6336 # define PR_SVE_SET_VL 50 6337 # define PR_SVE_GET_VL 51 6338 # define PR_SVE_VL_LEN_MASK 0xffff 6339 # define PR_SVE_VL_INHERIT (1 << 17) 6340 #endif 6341 #ifndef PR_PAC_RESET_KEYS 6342 # define PR_PAC_RESET_KEYS 54 6343 # define PR_PAC_APIAKEY (1 << 0) 6344 # define PR_PAC_APIBKEY (1 << 1) 6345 # define PR_PAC_APDAKEY (1 << 2) 6346 # define PR_PAC_APDBKEY (1 << 3) 6347 # define PR_PAC_APGAKEY (1 << 4) 6348 #endif 6349 #ifndef PR_SET_TAGGED_ADDR_CTRL 6350 # define PR_SET_TAGGED_ADDR_CTRL 55 6351 # define PR_GET_TAGGED_ADDR_CTRL 56 6352 # define PR_TAGGED_ADDR_ENABLE (1UL << 0) 6353 #endif 6354 #ifndef PR_MTE_TCF_SHIFT 6355 # define PR_MTE_TCF_SHIFT 1 6356 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 6357 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 6358 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 6359 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT) 6360 # define PR_MTE_TAG_SHIFT 3 6361 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT) 6362 #endif 6363 #ifndef PR_SET_IO_FLUSHER 6364 # define PR_SET_IO_FLUSHER 57 6365 # define PR_GET_IO_FLUSHER 58 6366 #endif 6367 #ifndef PR_SET_SYSCALL_USER_DISPATCH 6368 # define PR_SET_SYSCALL_USER_DISPATCH 59 6369 #endif 6370 #ifndef PR_SME_SET_VL 6371 # define PR_SME_SET_VL 63 6372 # define PR_SME_GET_VL 64 6373 # define PR_SME_VL_LEN_MASK 0xffff 6374 # define PR_SME_VL_INHERIT (1 << 17) 6375 #endif 6376 6377 #include "target_prctl.h" 6378 6379 static abi_long do_prctl_inval0(CPUArchState *env) 6380 { 6381 return -TARGET_EINVAL; 6382 } 6383 6384 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2) 6385 { 6386 return -TARGET_EINVAL; 6387 } 6388 6389 #ifndef do_prctl_get_fp_mode 6390 #define do_prctl_get_fp_mode do_prctl_inval0 6391 #endif 6392 #ifndef do_prctl_set_fp_mode 6393 #define do_prctl_set_fp_mode do_prctl_inval1 6394 #endif 6395 #ifndef do_prctl_sve_get_vl 6396 #define do_prctl_sve_get_vl do_prctl_inval0 6397 #endif 6398 #ifndef do_prctl_sve_set_vl 6399 #define do_prctl_sve_set_vl do_prctl_inval1 6400 #endif 6401 #ifndef do_prctl_reset_keys 6402 #define do_prctl_reset_keys do_prctl_inval1 6403 #endif 6404 #ifndef do_prctl_set_tagged_addr_ctrl 6405 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1 6406 #endif 6407 #ifndef do_prctl_get_tagged_addr_ctrl 6408 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0 6409 #endif 6410 #ifndef do_prctl_get_unalign 6411 #define do_prctl_get_unalign do_prctl_inval1 6412 #endif 6413 #ifndef do_prctl_set_unalign 6414 #define do_prctl_set_unalign do_prctl_inval1 6415 #endif 6416 #ifndef do_prctl_sme_get_vl 6417 #define do_prctl_sme_get_vl do_prctl_inval0 6418 #endif 6419 #ifndef do_prctl_sme_set_vl 6420 #define do_prctl_sme_set_vl do_prctl_inval1 6421 #endif 6422 6423 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2, 6424 abi_long arg3, abi_long arg4, abi_long arg5) 6425 { 6426 abi_long ret; 6427 6428 switch (option) { 6429 case PR_GET_PDEATHSIG: 6430 { 6431 int deathsig; 6432 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig, 6433 arg3, arg4, arg5)); 6434 if (!is_error(ret) && 6435 put_user_s32(host_to_target_signal(deathsig), arg2)) { 6436 return -TARGET_EFAULT; 6437 } 6438 return ret; 6439 } 6440 case PR_SET_PDEATHSIG: 6441 return get_errno(prctl(PR_SET_PDEATHSIG, target_to_host_signal(arg2), 6442 arg3, arg4, arg5)); 6443 case PR_GET_NAME: 6444 { 6445 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 6446 if (!name) { 6447 return -TARGET_EFAULT; 6448 } 6449 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name, 6450 arg3, arg4, arg5)); 6451 unlock_user(name, arg2, 16); 6452 return ret; 6453 } 6454 case PR_SET_NAME: 6455 { 6456 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 6457 if (!name) { 6458 return -TARGET_EFAULT; 6459 } 6460 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name, 6461 arg3, arg4, arg5)); 6462 unlock_user(name, arg2, 0); 6463 return ret; 6464 } 6465 case PR_GET_FP_MODE: 6466 return do_prctl_get_fp_mode(env); 6467 case PR_SET_FP_MODE: 6468 return do_prctl_set_fp_mode(env, arg2); 6469 case PR_SVE_GET_VL: 6470 return do_prctl_sve_get_vl(env); 6471 case PR_SVE_SET_VL: 6472 return do_prctl_sve_set_vl(env, arg2); 6473 case PR_SME_GET_VL: 6474 return do_prctl_sme_get_vl(env); 6475 case PR_SME_SET_VL: 6476 return do_prctl_sme_set_vl(env, arg2); 6477 case PR_PAC_RESET_KEYS: 6478 if (arg3 || arg4 || arg5) { 6479 return -TARGET_EINVAL; 6480 } 6481 return do_prctl_reset_keys(env, arg2); 6482 case PR_SET_TAGGED_ADDR_CTRL: 6483 if (arg3 || arg4 || arg5) { 6484 return -TARGET_EINVAL; 6485 } 6486 return do_prctl_set_tagged_addr_ctrl(env, arg2); 6487 case PR_GET_TAGGED_ADDR_CTRL: 6488 if (arg2 || arg3 || arg4 || arg5) { 6489 return -TARGET_EINVAL; 6490 } 6491 return do_prctl_get_tagged_addr_ctrl(env); 6492 6493 case PR_GET_UNALIGN: 6494 return do_prctl_get_unalign(env, arg2); 6495 case PR_SET_UNALIGN: 6496 return do_prctl_set_unalign(env, arg2); 6497 6498 case PR_CAP_AMBIENT: 6499 case PR_CAPBSET_READ: 6500 case PR_CAPBSET_DROP: 6501 case PR_GET_DUMPABLE: 6502 case PR_SET_DUMPABLE: 6503 case PR_GET_KEEPCAPS: 6504 case PR_SET_KEEPCAPS: 6505 case PR_GET_SECUREBITS: 6506 case PR_SET_SECUREBITS: 6507 case PR_GET_TIMING: 6508 case PR_SET_TIMING: 6509 case PR_GET_TIMERSLACK: 6510 case PR_SET_TIMERSLACK: 6511 case PR_MCE_KILL: 6512 case PR_MCE_KILL_GET: 6513 case PR_GET_NO_NEW_PRIVS: 6514 case PR_SET_NO_NEW_PRIVS: 6515 case PR_GET_IO_FLUSHER: 6516 case PR_SET_IO_FLUSHER: 6517 /* Some prctl options have no pointer arguments and we can pass on. */ 6518 return get_errno(prctl(option, arg2, arg3, arg4, arg5)); 6519 6520 case PR_GET_CHILD_SUBREAPER: 6521 case PR_SET_CHILD_SUBREAPER: 6522 case PR_GET_SPECULATION_CTRL: 6523 case PR_SET_SPECULATION_CTRL: 6524 case PR_GET_TID_ADDRESS: 6525 /* TODO */ 6526 return -TARGET_EINVAL; 6527 6528 case PR_GET_FPEXC: 6529 case PR_SET_FPEXC: 6530 /* Was used for SPE on PowerPC. */ 6531 return -TARGET_EINVAL; 6532 6533 case PR_GET_ENDIAN: 6534 case PR_SET_ENDIAN: 6535 case PR_GET_FPEMU: 6536 case PR_SET_FPEMU: 6537 case PR_SET_MM: 6538 case PR_GET_SECCOMP: 6539 case PR_SET_SECCOMP: 6540 case PR_SET_SYSCALL_USER_DISPATCH: 6541 case PR_GET_THP_DISABLE: 6542 case PR_SET_THP_DISABLE: 6543 case PR_GET_TSC: 6544 case PR_SET_TSC: 6545 /* Disable to prevent the target disabling stuff we need. */ 6546 return -TARGET_EINVAL; 6547 6548 default: 6549 qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n", 6550 option); 6551 return -TARGET_EINVAL; 6552 } 6553 } 6554 6555 #define NEW_STACK_SIZE 0x40000 6556 6557 6558 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6559 typedef struct { 6560 CPUArchState *env; 6561 pthread_mutex_t mutex; 6562 pthread_cond_t cond; 6563 pthread_t thread; 6564 uint32_t tid; 6565 abi_ulong child_tidptr; 6566 abi_ulong parent_tidptr; 6567 sigset_t sigmask; 6568 } new_thread_info; 6569 6570 static void *clone_func(void *arg) 6571 { 6572 new_thread_info *info = arg; 6573 CPUArchState *env; 6574 CPUState *cpu; 6575 TaskState *ts; 6576 6577 rcu_register_thread(); 6578 tcg_register_thread(); 6579 env = info->env; 6580 cpu = env_cpu(env); 6581 thread_cpu = cpu; 6582 ts = (TaskState *)cpu->opaque; 6583 info->tid = sys_gettid(); 6584 task_settid(ts); 6585 if (info->child_tidptr) 6586 put_user_u32(info->tid, info->child_tidptr); 6587 if (info->parent_tidptr) 6588 put_user_u32(info->tid, info->parent_tidptr); 6589 qemu_guest_random_seed_thread_part2(cpu->random_seed); 6590 /* Enable signals. */ 6591 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6592 /* Signal to the parent that we're ready. */ 6593 pthread_mutex_lock(&info->mutex); 6594 pthread_cond_broadcast(&info->cond); 6595 pthread_mutex_unlock(&info->mutex); 6596 /* Wait until the parent has finished initializing the tls state. */ 6597 pthread_mutex_lock(&clone_lock); 6598 pthread_mutex_unlock(&clone_lock); 6599 cpu_loop(env); 6600 /* never exits */ 6601 return NULL; 6602 } 6603 6604 /* do_fork() Must return host values and target errnos (unlike most 6605 do_*() functions). */ 6606 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6607 abi_ulong parent_tidptr, target_ulong newtls, 6608 abi_ulong child_tidptr) 6609 { 6610 CPUState *cpu = env_cpu(env); 6611 int ret; 6612 TaskState *ts; 6613 CPUState *new_cpu; 6614 CPUArchState *new_env; 6615 sigset_t sigmask; 6616 6617 flags &= ~CLONE_IGNORED_FLAGS; 6618 6619 /* Emulate vfork() with fork() */ 6620 if (flags & CLONE_VFORK) 6621 flags &= ~(CLONE_VFORK | CLONE_VM); 6622 6623 if (flags & CLONE_VM) { 6624 TaskState *parent_ts = (TaskState *)cpu->opaque; 6625 new_thread_info info; 6626 pthread_attr_t attr; 6627 6628 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6629 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6630 return -TARGET_EINVAL; 6631 } 6632 6633 ts = g_new0(TaskState, 1); 6634 init_task_state(ts); 6635 6636 /* Grab a mutex so that thread setup appears atomic. */ 6637 pthread_mutex_lock(&clone_lock); 6638 6639 /* 6640 * If this is our first additional thread, we need to ensure we 6641 * generate code for parallel execution and flush old translations. 6642 * Do this now so that the copy gets CF_PARALLEL too. 6643 */ 6644 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 6645 cpu->tcg_cflags |= CF_PARALLEL; 6646 tb_flush(cpu); 6647 } 6648 6649 /* we create a new CPU instance. */ 6650 new_env = cpu_copy(env); 6651 /* Init regs that differ from the parent. */ 6652 cpu_clone_regs_child(new_env, newsp, flags); 6653 cpu_clone_regs_parent(env, flags); 6654 new_cpu = env_cpu(new_env); 6655 new_cpu->opaque = ts; 6656 ts->bprm = parent_ts->bprm; 6657 ts->info = parent_ts->info; 6658 ts->signal_mask = parent_ts->signal_mask; 6659 6660 if (flags & CLONE_CHILD_CLEARTID) { 6661 ts->child_tidptr = child_tidptr; 6662 } 6663 6664 if (flags & CLONE_SETTLS) { 6665 cpu_set_tls (new_env, newtls); 6666 } 6667 6668 memset(&info, 0, sizeof(info)); 6669 pthread_mutex_init(&info.mutex, NULL); 6670 pthread_mutex_lock(&info.mutex); 6671 pthread_cond_init(&info.cond, NULL); 6672 info.env = new_env; 6673 if (flags & CLONE_CHILD_SETTID) { 6674 info.child_tidptr = child_tidptr; 6675 } 6676 if (flags & CLONE_PARENT_SETTID) { 6677 info.parent_tidptr = parent_tidptr; 6678 } 6679 6680 ret = pthread_attr_init(&attr); 6681 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6682 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6683 /* It is not safe to deliver signals until the child has finished 6684 initializing, so temporarily block all signals. */ 6685 sigfillset(&sigmask); 6686 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6687 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6688 6689 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6690 /* TODO: Free new CPU state if thread creation failed. */ 6691 6692 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6693 pthread_attr_destroy(&attr); 6694 if (ret == 0) { 6695 /* Wait for the child to initialize. */ 6696 pthread_cond_wait(&info.cond, &info.mutex); 6697 ret = info.tid; 6698 } else { 6699 ret = -1; 6700 } 6701 pthread_mutex_unlock(&info.mutex); 6702 pthread_cond_destroy(&info.cond); 6703 pthread_mutex_destroy(&info.mutex); 6704 pthread_mutex_unlock(&clone_lock); 6705 } else { 6706 /* if no CLONE_VM, we consider it is a fork */ 6707 if (flags & CLONE_INVALID_FORK_FLAGS) { 6708 return -TARGET_EINVAL; 6709 } 6710 6711 /* We can't support custom termination signals */ 6712 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6713 return -TARGET_EINVAL; 6714 } 6715 6716 if (block_signals()) { 6717 return -QEMU_ERESTARTSYS; 6718 } 6719 6720 fork_start(); 6721 ret = fork(); 6722 if (ret == 0) { 6723 /* Child Process. */ 6724 cpu_clone_regs_child(env, newsp, flags); 6725 fork_end(1); 6726 /* There is a race condition here. The parent process could 6727 theoretically read the TID in the child process before the child 6728 tid is set. This would require using either ptrace 6729 (not implemented) or having *_tidptr to point at a shared memory 6730 mapping. We can't repeat the spinlock hack used above because 6731 the child process gets its own copy of the lock. */ 6732 if (flags & CLONE_CHILD_SETTID) 6733 put_user_u32(sys_gettid(), child_tidptr); 6734 if (flags & CLONE_PARENT_SETTID) 6735 put_user_u32(sys_gettid(), parent_tidptr); 6736 ts = (TaskState *)cpu->opaque; 6737 if (flags & CLONE_SETTLS) 6738 cpu_set_tls (env, newtls); 6739 if (flags & CLONE_CHILD_CLEARTID) 6740 ts->child_tidptr = child_tidptr; 6741 } else { 6742 cpu_clone_regs_parent(env, flags); 6743 fork_end(0); 6744 } 6745 } 6746 return ret; 6747 } 6748 6749 /* warning : doesn't handle linux specific flags... */ 6750 static int target_to_host_fcntl_cmd(int cmd) 6751 { 6752 int ret; 6753 6754 switch(cmd) { 6755 case TARGET_F_DUPFD: 6756 case TARGET_F_GETFD: 6757 case TARGET_F_SETFD: 6758 case TARGET_F_GETFL: 6759 case TARGET_F_SETFL: 6760 case TARGET_F_OFD_GETLK: 6761 case TARGET_F_OFD_SETLK: 6762 case TARGET_F_OFD_SETLKW: 6763 ret = cmd; 6764 break; 6765 case TARGET_F_GETLK: 6766 ret = F_GETLK64; 6767 break; 6768 case TARGET_F_SETLK: 6769 ret = F_SETLK64; 6770 break; 6771 case TARGET_F_SETLKW: 6772 ret = F_SETLKW64; 6773 break; 6774 case TARGET_F_GETOWN: 6775 ret = F_GETOWN; 6776 break; 6777 case TARGET_F_SETOWN: 6778 ret = F_SETOWN; 6779 break; 6780 case TARGET_F_GETSIG: 6781 ret = F_GETSIG; 6782 break; 6783 case TARGET_F_SETSIG: 6784 ret = F_SETSIG; 6785 break; 6786 #if TARGET_ABI_BITS == 32 6787 case TARGET_F_GETLK64: 6788 ret = F_GETLK64; 6789 break; 6790 case TARGET_F_SETLK64: 6791 ret = F_SETLK64; 6792 break; 6793 case TARGET_F_SETLKW64: 6794 ret = F_SETLKW64; 6795 break; 6796 #endif 6797 case TARGET_F_SETLEASE: 6798 ret = F_SETLEASE; 6799 break; 6800 case TARGET_F_GETLEASE: 6801 ret = F_GETLEASE; 6802 break; 6803 #ifdef F_DUPFD_CLOEXEC 6804 case TARGET_F_DUPFD_CLOEXEC: 6805 ret = F_DUPFD_CLOEXEC; 6806 break; 6807 #endif 6808 case TARGET_F_NOTIFY: 6809 ret = F_NOTIFY; 6810 break; 6811 #ifdef F_GETOWN_EX 6812 case TARGET_F_GETOWN_EX: 6813 ret = F_GETOWN_EX; 6814 break; 6815 #endif 6816 #ifdef F_SETOWN_EX 6817 case TARGET_F_SETOWN_EX: 6818 ret = F_SETOWN_EX; 6819 break; 6820 #endif 6821 #ifdef F_SETPIPE_SZ 6822 case TARGET_F_SETPIPE_SZ: 6823 ret = F_SETPIPE_SZ; 6824 break; 6825 case TARGET_F_GETPIPE_SZ: 6826 ret = F_GETPIPE_SZ; 6827 break; 6828 #endif 6829 #ifdef F_ADD_SEALS 6830 case TARGET_F_ADD_SEALS: 6831 ret = F_ADD_SEALS; 6832 break; 6833 case TARGET_F_GET_SEALS: 6834 ret = F_GET_SEALS; 6835 break; 6836 #endif 6837 default: 6838 ret = -TARGET_EINVAL; 6839 break; 6840 } 6841 6842 #if defined(__powerpc64__) 6843 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6844 * is not supported by kernel. The glibc fcntl call actually adjusts 6845 * them to 5, 6 and 7 before making the syscall(). Since we make the 6846 * syscall directly, adjust to what is supported by the kernel. 6847 */ 6848 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6849 ret -= F_GETLK64 - 5; 6850 } 6851 #endif 6852 6853 return ret; 6854 } 6855 6856 #define FLOCK_TRANSTBL \ 6857 switch (type) { \ 6858 TRANSTBL_CONVERT(F_RDLCK); \ 6859 TRANSTBL_CONVERT(F_WRLCK); \ 6860 TRANSTBL_CONVERT(F_UNLCK); \ 6861 } 6862 6863 static int target_to_host_flock(int type) 6864 { 6865 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6866 FLOCK_TRANSTBL 6867 #undef TRANSTBL_CONVERT 6868 return -TARGET_EINVAL; 6869 } 6870 6871 static int host_to_target_flock(int type) 6872 { 6873 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6874 FLOCK_TRANSTBL 6875 #undef TRANSTBL_CONVERT 6876 /* if we don't know how to convert the value coming 6877 * from the host we copy to the target field as-is 6878 */ 6879 return type; 6880 } 6881 6882 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6883 abi_ulong target_flock_addr) 6884 { 6885 struct target_flock *target_fl; 6886 int l_type; 6887 6888 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6889 return -TARGET_EFAULT; 6890 } 6891 6892 __get_user(l_type, &target_fl->l_type); 6893 l_type = target_to_host_flock(l_type); 6894 if (l_type < 0) { 6895 return l_type; 6896 } 6897 fl->l_type = l_type; 6898 __get_user(fl->l_whence, &target_fl->l_whence); 6899 __get_user(fl->l_start, &target_fl->l_start); 6900 __get_user(fl->l_len, &target_fl->l_len); 6901 __get_user(fl->l_pid, &target_fl->l_pid); 6902 unlock_user_struct(target_fl, target_flock_addr, 0); 6903 return 0; 6904 } 6905 6906 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6907 const struct flock64 *fl) 6908 { 6909 struct target_flock *target_fl; 6910 short l_type; 6911 6912 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6913 return -TARGET_EFAULT; 6914 } 6915 6916 l_type = host_to_target_flock(fl->l_type); 6917 __put_user(l_type, &target_fl->l_type); 6918 __put_user(fl->l_whence, &target_fl->l_whence); 6919 __put_user(fl->l_start, &target_fl->l_start); 6920 __put_user(fl->l_len, &target_fl->l_len); 6921 __put_user(fl->l_pid, &target_fl->l_pid); 6922 unlock_user_struct(target_fl, target_flock_addr, 1); 6923 return 0; 6924 } 6925 6926 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6927 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6928 6929 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6930 struct target_oabi_flock64 { 6931 abi_short l_type; 6932 abi_short l_whence; 6933 abi_llong l_start; 6934 abi_llong l_len; 6935 abi_int l_pid; 6936 } QEMU_PACKED; 6937 6938 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 6939 abi_ulong target_flock_addr) 6940 { 6941 struct target_oabi_flock64 *target_fl; 6942 int l_type; 6943 6944 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6945 return -TARGET_EFAULT; 6946 } 6947 6948 __get_user(l_type, &target_fl->l_type); 6949 l_type = target_to_host_flock(l_type); 6950 if (l_type < 0) { 6951 return l_type; 6952 } 6953 fl->l_type = l_type; 6954 __get_user(fl->l_whence, &target_fl->l_whence); 6955 __get_user(fl->l_start, &target_fl->l_start); 6956 __get_user(fl->l_len, &target_fl->l_len); 6957 __get_user(fl->l_pid, &target_fl->l_pid); 6958 unlock_user_struct(target_fl, target_flock_addr, 0); 6959 return 0; 6960 } 6961 6962 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 6963 const struct flock64 *fl) 6964 { 6965 struct target_oabi_flock64 *target_fl; 6966 short l_type; 6967 6968 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6969 return -TARGET_EFAULT; 6970 } 6971 6972 l_type = host_to_target_flock(fl->l_type); 6973 __put_user(l_type, &target_fl->l_type); 6974 __put_user(fl->l_whence, &target_fl->l_whence); 6975 __put_user(fl->l_start, &target_fl->l_start); 6976 __put_user(fl->l_len, &target_fl->l_len); 6977 __put_user(fl->l_pid, &target_fl->l_pid); 6978 unlock_user_struct(target_fl, target_flock_addr, 1); 6979 return 0; 6980 } 6981 #endif 6982 6983 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6984 abi_ulong target_flock_addr) 6985 { 6986 struct target_flock64 *target_fl; 6987 int l_type; 6988 6989 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6990 return -TARGET_EFAULT; 6991 } 6992 6993 __get_user(l_type, &target_fl->l_type); 6994 l_type = target_to_host_flock(l_type); 6995 if (l_type < 0) { 6996 return l_type; 6997 } 6998 fl->l_type = l_type; 6999 __get_user(fl->l_whence, &target_fl->l_whence); 7000 __get_user(fl->l_start, &target_fl->l_start); 7001 __get_user(fl->l_len, &target_fl->l_len); 7002 __get_user(fl->l_pid, &target_fl->l_pid); 7003 unlock_user_struct(target_fl, target_flock_addr, 0); 7004 return 0; 7005 } 7006 7007 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 7008 const struct flock64 *fl) 7009 { 7010 struct target_flock64 *target_fl; 7011 short l_type; 7012 7013 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 7014 return -TARGET_EFAULT; 7015 } 7016 7017 l_type = host_to_target_flock(fl->l_type); 7018 __put_user(l_type, &target_fl->l_type); 7019 __put_user(fl->l_whence, &target_fl->l_whence); 7020 __put_user(fl->l_start, &target_fl->l_start); 7021 __put_user(fl->l_len, &target_fl->l_len); 7022 __put_user(fl->l_pid, &target_fl->l_pid); 7023 unlock_user_struct(target_fl, target_flock_addr, 1); 7024 return 0; 7025 } 7026 7027 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 7028 { 7029 struct flock64 fl64; 7030 #ifdef F_GETOWN_EX 7031 struct f_owner_ex fox; 7032 struct target_f_owner_ex *target_fox; 7033 #endif 7034 abi_long ret; 7035 int host_cmd = target_to_host_fcntl_cmd(cmd); 7036 7037 if (host_cmd == -TARGET_EINVAL) 7038 return host_cmd; 7039 7040 switch(cmd) { 7041 case TARGET_F_GETLK: 7042 ret = copy_from_user_flock(&fl64, arg); 7043 if (ret) { 7044 return ret; 7045 } 7046 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7047 if (ret == 0) { 7048 ret = copy_to_user_flock(arg, &fl64); 7049 } 7050 break; 7051 7052 case TARGET_F_SETLK: 7053 case TARGET_F_SETLKW: 7054 ret = copy_from_user_flock(&fl64, arg); 7055 if (ret) { 7056 return ret; 7057 } 7058 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7059 break; 7060 7061 case TARGET_F_GETLK64: 7062 case TARGET_F_OFD_GETLK: 7063 ret = copy_from_user_flock64(&fl64, arg); 7064 if (ret) { 7065 return ret; 7066 } 7067 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7068 if (ret == 0) { 7069 ret = copy_to_user_flock64(arg, &fl64); 7070 } 7071 break; 7072 case TARGET_F_SETLK64: 7073 case TARGET_F_SETLKW64: 7074 case TARGET_F_OFD_SETLK: 7075 case TARGET_F_OFD_SETLKW: 7076 ret = copy_from_user_flock64(&fl64, arg); 7077 if (ret) { 7078 return ret; 7079 } 7080 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7081 break; 7082 7083 case TARGET_F_GETFL: 7084 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7085 if (ret >= 0) { 7086 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 7087 } 7088 break; 7089 7090 case TARGET_F_SETFL: 7091 ret = get_errno(safe_fcntl(fd, host_cmd, 7092 target_to_host_bitmask(arg, 7093 fcntl_flags_tbl))); 7094 break; 7095 7096 #ifdef F_GETOWN_EX 7097 case TARGET_F_GETOWN_EX: 7098 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7099 if (ret >= 0) { 7100 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 7101 return -TARGET_EFAULT; 7102 target_fox->type = tswap32(fox.type); 7103 target_fox->pid = tswap32(fox.pid); 7104 unlock_user_struct(target_fox, arg, 1); 7105 } 7106 break; 7107 #endif 7108 7109 #ifdef F_SETOWN_EX 7110 case TARGET_F_SETOWN_EX: 7111 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 7112 return -TARGET_EFAULT; 7113 fox.type = tswap32(target_fox->type); 7114 fox.pid = tswap32(target_fox->pid); 7115 unlock_user_struct(target_fox, arg, 0); 7116 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7117 break; 7118 #endif 7119 7120 case TARGET_F_SETSIG: 7121 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg))); 7122 break; 7123 7124 case TARGET_F_GETSIG: 7125 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg))); 7126 break; 7127 7128 case TARGET_F_SETOWN: 7129 case TARGET_F_GETOWN: 7130 case TARGET_F_SETLEASE: 7131 case TARGET_F_GETLEASE: 7132 case TARGET_F_SETPIPE_SZ: 7133 case TARGET_F_GETPIPE_SZ: 7134 case TARGET_F_ADD_SEALS: 7135 case TARGET_F_GET_SEALS: 7136 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7137 break; 7138 7139 default: 7140 ret = get_errno(safe_fcntl(fd, cmd, arg)); 7141 break; 7142 } 7143 return ret; 7144 } 7145 7146 #ifdef USE_UID16 7147 7148 static inline int high2lowuid(int uid) 7149 { 7150 if (uid > 65535) 7151 return 65534; 7152 else 7153 return uid; 7154 } 7155 7156 static inline int high2lowgid(int gid) 7157 { 7158 if (gid > 65535) 7159 return 65534; 7160 else 7161 return gid; 7162 } 7163 7164 static inline int low2highuid(int uid) 7165 { 7166 if ((int16_t)uid == -1) 7167 return -1; 7168 else 7169 return uid; 7170 } 7171 7172 static inline int low2highgid(int gid) 7173 { 7174 if ((int16_t)gid == -1) 7175 return -1; 7176 else 7177 return gid; 7178 } 7179 static inline int tswapid(int id) 7180 { 7181 return tswap16(id); 7182 } 7183 7184 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 7185 7186 #else /* !USE_UID16 */ 7187 static inline int high2lowuid(int uid) 7188 { 7189 return uid; 7190 } 7191 static inline int high2lowgid(int gid) 7192 { 7193 return gid; 7194 } 7195 static inline int low2highuid(int uid) 7196 { 7197 return uid; 7198 } 7199 static inline int low2highgid(int gid) 7200 { 7201 return gid; 7202 } 7203 static inline int tswapid(int id) 7204 { 7205 return tswap32(id); 7206 } 7207 7208 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 7209 7210 #endif /* USE_UID16 */ 7211 7212 /* We must do direct syscalls for setting UID/GID, because we want to 7213 * implement the Linux system call semantics of "change only for this thread", 7214 * not the libc/POSIX semantics of "change for all threads in process". 7215 * (See http://ewontfix.com/17/ for more details.) 7216 * We use the 32-bit version of the syscalls if present; if it is not 7217 * then either the host architecture supports 32-bit UIDs natively with 7218 * the standard syscall, or the 16-bit UID is the best we can do. 7219 */ 7220 #ifdef __NR_setuid32 7221 #define __NR_sys_setuid __NR_setuid32 7222 #else 7223 #define __NR_sys_setuid __NR_setuid 7224 #endif 7225 #ifdef __NR_setgid32 7226 #define __NR_sys_setgid __NR_setgid32 7227 #else 7228 #define __NR_sys_setgid __NR_setgid 7229 #endif 7230 #ifdef __NR_setresuid32 7231 #define __NR_sys_setresuid __NR_setresuid32 7232 #else 7233 #define __NR_sys_setresuid __NR_setresuid 7234 #endif 7235 #ifdef __NR_setresgid32 7236 #define __NR_sys_setresgid __NR_setresgid32 7237 #else 7238 #define __NR_sys_setresgid __NR_setresgid 7239 #endif 7240 7241 _syscall1(int, sys_setuid, uid_t, uid) 7242 _syscall1(int, sys_setgid, gid_t, gid) 7243 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 7244 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 7245 7246 void syscall_init(void) 7247 { 7248 IOCTLEntry *ie; 7249 const argtype *arg_type; 7250 int size; 7251 7252 thunk_init(STRUCT_MAX); 7253 7254 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 7255 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 7256 #include "syscall_types.h" 7257 #undef STRUCT 7258 #undef STRUCT_SPECIAL 7259 7260 /* we patch the ioctl size if necessary. We rely on the fact that 7261 no ioctl has all the bits at '1' in the size field */ 7262 ie = ioctl_entries; 7263 while (ie->target_cmd != 0) { 7264 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 7265 TARGET_IOC_SIZEMASK) { 7266 arg_type = ie->arg_type; 7267 if (arg_type[0] != TYPE_PTR) { 7268 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 7269 ie->target_cmd); 7270 exit(1); 7271 } 7272 arg_type++; 7273 size = thunk_type_size(arg_type, 0); 7274 ie->target_cmd = (ie->target_cmd & 7275 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 7276 (size << TARGET_IOC_SIZESHIFT); 7277 } 7278 7279 /* automatic consistency check if same arch */ 7280 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 7281 (defined(__x86_64__) && defined(TARGET_X86_64)) 7282 if (unlikely(ie->target_cmd != ie->host_cmd)) { 7283 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 7284 ie->name, ie->target_cmd, ie->host_cmd); 7285 } 7286 #endif 7287 ie++; 7288 } 7289 } 7290 7291 #ifdef TARGET_NR_truncate64 7292 static inline abi_long target_truncate64(CPUArchState *cpu_env, const char *arg1, 7293 abi_long arg2, 7294 abi_long arg3, 7295 abi_long arg4) 7296 { 7297 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 7298 arg2 = arg3; 7299 arg3 = arg4; 7300 } 7301 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 7302 } 7303 #endif 7304 7305 #ifdef TARGET_NR_ftruncate64 7306 static inline abi_long target_ftruncate64(CPUArchState *cpu_env, abi_long arg1, 7307 abi_long arg2, 7308 abi_long arg3, 7309 abi_long arg4) 7310 { 7311 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 7312 arg2 = arg3; 7313 arg3 = arg4; 7314 } 7315 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 7316 } 7317 #endif 7318 7319 #if defined(TARGET_NR_timer_settime) || \ 7320 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 7321 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its, 7322 abi_ulong target_addr) 7323 { 7324 if (target_to_host_timespec(&host_its->it_interval, target_addr + 7325 offsetof(struct target_itimerspec, 7326 it_interval)) || 7327 target_to_host_timespec(&host_its->it_value, target_addr + 7328 offsetof(struct target_itimerspec, 7329 it_value))) { 7330 return -TARGET_EFAULT; 7331 } 7332 7333 return 0; 7334 } 7335 #endif 7336 7337 #if defined(TARGET_NR_timer_settime64) || \ 7338 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) 7339 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its, 7340 abi_ulong target_addr) 7341 { 7342 if (target_to_host_timespec64(&host_its->it_interval, target_addr + 7343 offsetof(struct target__kernel_itimerspec, 7344 it_interval)) || 7345 target_to_host_timespec64(&host_its->it_value, target_addr + 7346 offsetof(struct target__kernel_itimerspec, 7347 it_value))) { 7348 return -TARGET_EFAULT; 7349 } 7350 7351 return 0; 7352 } 7353 #endif 7354 7355 #if ((defined(TARGET_NR_timerfd_gettime) || \ 7356 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 7357 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 7358 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 7359 struct itimerspec *host_its) 7360 { 7361 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7362 it_interval), 7363 &host_its->it_interval) || 7364 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7365 it_value), 7366 &host_its->it_value)) { 7367 return -TARGET_EFAULT; 7368 } 7369 return 0; 7370 } 7371 #endif 7372 7373 #if ((defined(TARGET_NR_timerfd_gettime64) || \ 7374 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \ 7375 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64) 7376 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr, 7377 struct itimerspec *host_its) 7378 { 7379 if (host_to_target_timespec64(target_addr + 7380 offsetof(struct target__kernel_itimerspec, 7381 it_interval), 7382 &host_its->it_interval) || 7383 host_to_target_timespec64(target_addr + 7384 offsetof(struct target__kernel_itimerspec, 7385 it_value), 7386 &host_its->it_value)) { 7387 return -TARGET_EFAULT; 7388 } 7389 return 0; 7390 } 7391 #endif 7392 7393 #if defined(TARGET_NR_adjtimex) || \ 7394 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 7395 static inline abi_long target_to_host_timex(struct timex *host_tx, 7396 abi_long target_addr) 7397 { 7398 struct target_timex *target_tx; 7399 7400 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7401 return -TARGET_EFAULT; 7402 } 7403 7404 __get_user(host_tx->modes, &target_tx->modes); 7405 __get_user(host_tx->offset, &target_tx->offset); 7406 __get_user(host_tx->freq, &target_tx->freq); 7407 __get_user(host_tx->maxerror, &target_tx->maxerror); 7408 __get_user(host_tx->esterror, &target_tx->esterror); 7409 __get_user(host_tx->status, &target_tx->status); 7410 __get_user(host_tx->constant, &target_tx->constant); 7411 __get_user(host_tx->precision, &target_tx->precision); 7412 __get_user(host_tx->tolerance, &target_tx->tolerance); 7413 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7414 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7415 __get_user(host_tx->tick, &target_tx->tick); 7416 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7417 __get_user(host_tx->jitter, &target_tx->jitter); 7418 __get_user(host_tx->shift, &target_tx->shift); 7419 __get_user(host_tx->stabil, &target_tx->stabil); 7420 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7421 __get_user(host_tx->calcnt, &target_tx->calcnt); 7422 __get_user(host_tx->errcnt, &target_tx->errcnt); 7423 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7424 __get_user(host_tx->tai, &target_tx->tai); 7425 7426 unlock_user_struct(target_tx, target_addr, 0); 7427 return 0; 7428 } 7429 7430 static inline abi_long host_to_target_timex(abi_long target_addr, 7431 struct timex *host_tx) 7432 { 7433 struct target_timex *target_tx; 7434 7435 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7436 return -TARGET_EFAULT; 7437 } 7438 7439 __put_user(host_tx->modes, &target_tx->modes); 7440 __put_user(host_tx->offset, &target_tx->offset); 7441 __put_user(host_tx->freq, &target_tx->freq); 7442 __put_user(host_tx->maxerror, &target_tx->maxerror); 7443 __put_user(host_tx->esterror, &target_tx->esterror); 7444 __put_user(host_tx->status, &target_tx->status); 7445 __put_user(host_tx->constant, &target_tx->constant); 7446 __put_user(host_tx->precision, &target_tx->precision); 7447 __put_user(host_tx->tolerance, &target_tx->tolerance); 7448 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7449 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7450 __put_user(host_tx->tick, &target_tx->tick); 7451 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7452 __put_user(host_tx->jitter, &target_tx->jitter); 7453 __put_user(host_tx->shift, &target_tx->shift); 7454 __put_user(host_tx->stabil, &target_tx->stabil); 7455 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7456 __put_user(host_tx->calcnt, &target_tx->calcnt); 7457 __put_user(host_tx->errcnt, &target_tx->errcnt); 7458 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7459 __put_user(host_tx->tai, &target_tx->tai); 7460 7461 unlock_user_struct(target_tx, target_addr, 1); 7462 return 0; 7463 } 7464 #endif 7465 7466 7467 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 7468 static inline abi_long target_to_host_timex64(struct timex *host_tx, 7469 abi_long target_addr) 7470 { 7471 struct target__kernel_timex *target_tx; 7472 7473 if (copy_from_user_timeval64(&host_tx->time, target_addr + 7474 offsetof(struct target__kernel_timex, 7475 time))) { 7476 return -TARGET_EFAULT; 7477 } 7478 7479 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7480 return -TARGET_EFAULT; 7481 } 7482 7483 __get_user(host_tx->modes, &target_tx->modes); 7484 __get_user(host_tx->offset, &target_tx->offset); 7485 __get_user(host_tx->freq, &target_tx->freq); 7486 __get_user(host_tx->maxerror, &target_tx->maxerror); 7487 __get_user(host_tx->esterror, &target_tx->esterror); 7488 __get_user(host_tx->status, &target_tx->status); 7489 __get_user(host_tx->constant, &target_tx->constant); 7490 __get_user(host_tx->precision, &target_tx->precision); 7491 __get_user(host_tx->tolerance, &target_tx->tolerance); 7492 __get_user(host_tx->tick, &target_tx->tick); 7493 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7494 __get_user(host_tx->jitter, &target_tx->jitter); 7495 __get_user(host_tx->shift, &target_tx->shift); 7496 __get_user(host_tx->stabil, &target_tx->stabil); 7497 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7498 __get_user(host_tx->calcnt, &target_tx->calcnt); 7499 __get_user(host_tx->errcnt, &target_tx->errcnt); 7500 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7501 __get_user(host_tx->tai, &target_tx->tai); 7502 7503 unlock_user_struct(target_tx, target_addr, 0); 7504 return 0; 7505 } 7506 7507 static inline abi_long host_to_target_timex64(abi_long target_addr, 7508 struct timex *host_tx) 7509 { 7510 struct target__kernel_timex *target_tx; 7511 7512 if (copy_to_user_timeval64(target_addr + 7513 offsetof(struct target__kernel_timex, time), 7514 &host_tx->time)) { 7515 return -TARGET_EFAULT; 7516 } 7517 7518 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7519 return -TARGET_EFAULT; 7520 } 7521 7522 __put_user(host_tx->modes, &target_tx->modes); 7523 __put_user(host_tx->offset, &target_tx->offset); 7524 __put_user(host_tx->freq, &target_tx->freq); 7525 __put_user(host_tx->maxerror, &target_tx->maxerror); 7526 __put_user(host_tx->esterror, &target_tx->esterror); 7527 __put_user(host_tx->status, &target_tx->status); 7528 __put_user(host_tx->constant, &target_tx->constant); 7529 __put_user(host_tx->precision, &target_tx->precision); 7530 __put_user(host_tx->tolerance, &target_tx->tolerance); 7531 __put_user(host_tx->tick, &target_tx->tick); 7532 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7533 __put_user(host_tx->jitter, &target_tx->jitter); 7534 __put_user(host_tx->shift, &target_tx->shift); 7535 __put_user(host_tx->stabil, &target_tx->stabil); 7536 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7537 __put_user(host_tx->calcnt, &target_tx->calcnt); 7538 __put_user(host_tx->errcnt, &target_tx->errcnt); 7539 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7540 __put_user(host_tx->tai, &target_tx->tai); 7541 7542 unlock_user_struct(target_tx, target_addr, 1); 7543 return 0; 7544 } 7545 #endif 7546 7547 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID 7548 #define sigev_notify_thread_id _sigev_un._tid 7549 #endif 7550 7551 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7552 abi_ulong target_addr) 7553 { 7554 struct target_sigevent *target_sevp; 7555 7556 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7557 return -TARGET_EFAULT; 7558 } 7559 7560 /* This union is awkward on 64 bit systems because it has a 32 bit 7561 * integer and a pointer in it; we follow the conversion approach 7562 * used for handling sigval types in signal.c so the guest should get 7563 * the correct value back even if we did a 64 bit byteswap and it's 7564 * using the 32 bit integer. 7565 */ 7566 host_sevp->sigev_value.sival_ptr = 7567 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7568 host_sevp->sigev_signo = 7569 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7570 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7571 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid); 7572 7573 unlock_user_struct(target_sevp, target_addr, 1); 7574 return 0; 7575 } 7576 7577 #if defined(TARGET_NR_mlockall) 7578 static inline int target_to_host_mlockall_arg(int arg) 7579 { 7580 int result = 0; 7581 7582 if (arg & TARGET_MCL_CURRENT) { 7583 result |= MCL_CURRENT; 7584 } 7585 if (arg & TARGET_MCL_FUTURE) { 7586 result |= MCL_FUTURE; 7587 } 7588 #ifdef MCL_ONFAULT 7589 if (arg & TARGET_MCL_ONFAULT) { 7590 result |= MCL_ONFAULT; 7591 } 7592 #endif 7593 7594 return result; 7595 } 7596 #endif 7597 7598 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 7599 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 7600 defined(TARGET_NR_newfstatat)) 7601 static inline abi_long host_to_target_stat64(CPUArchState *cpu_env, 7602 abi_ulong target_addr, 7603 struct stat *host_st) 7604 { 7605 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7606 if (cpu_env->eabi) { 7607 struct target_eabi_stat64 *target_st; 7608 7609 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7610 return -TARGET_EFAULT; 7611 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7612 __put_user(host_st->st_dev, &target_st->st_dev); 7613 __put_user(host_st->st_ino, &target_st->st_ino); 7614 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7615 __put_user(host_st->st_ino, &target_st->__st_ino); 7616 #endif 7617 __put_user(host_st->st_mode, &target_st->st_mode); 7618 __put_user(host_st->st_nlink, &target_st->st_nlink); 7619 __put_user(host_st->st_uid, &target_st->st_uid); 7620 __put_user(host_st->st_gid, &target_st->st_gid); 7621 __put_user(host_st->st_rdev, &target_st->st_rdev); 7622 __put_user(host_st->st_size, &target_st->st_size); 7623 __put_user(host_st->st_blksize, &target_st->st_blksize); 7624 __put_user(host_st->st_blocks, &target_st->st_blocks); 7625 __put_user(host_st->st_atime, &target_st->target_st_atime); 7626 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7627 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7628 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7629 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7630 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7631 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7632 #endif 7633 unlock_user_struct(target_st, target_addr, 1); 7634 } else 7635 #endif 7636 { 7637 #if defined(TARGET_HAS_STRUCT_STAT64) 7638 struct target_stat64 *target_st; 7639 #else 7640 struct target_stat *target_st; 7641 #endif 7642 7643 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7644 return -TARGET_EFAULT; 7645 memset(target_st, 0, sizeof(*target_st)); 7646 __put_user(host_st->st_dev, &target_st->st_dev); 7647 __put_user(host_st->st_ino, &target_st->st_ino); 7648 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7649 __put_user(host_st->st_ino, &target_st->__st_ino); 7650 #endif 7651 __put_user(host_st->st_mode, &target_st->st_mode); 7652 __put_user(host_st->st_nlink, &target_st->st_nlink); 7653 __put_user(host_st->st_uid, &target_st->st_uid); 7654 __put_user(host_st->st_gid, &target_st->st_gid); 7655 __put_user(host_st->st_rdev, &target_st->st_rdev); 7656 /* XXX: better use of kernel struct */ 7657 __put_user(host_st->st_size, &target_st->st_size); 7658 __put_user(host_st->st_blksize, &target_st->st_blksize); 7659 __put_user(host_st->st_blocks, &target_st->st_blocks); 7660 __put_user(host_st->st_atime, &target_st->target_st_atime); 7661 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7662 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7663 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7664 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7665 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7666 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7667 #endif 7668 unlock_user_struct(target_st, target_addr, 1); 7669 } 7670 7671 return 0; 7672 } 7673 #endif 7674 7675 #if defined(TARGET_NR_statx) && defined(__NR_statx) 7676 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 7677 abi_ulong target_addr) 7678 { 7679 struct target_statx *target_stx; 7680 7681 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 7682 return -TARGET_EFAULT; 7683 } 7684 memset(target_stx, 0, sizeof(*target_stx)); 7685 7686 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 7687 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 7688 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 7689 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 7690 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 7691 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 7692 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 7693 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 7694 __put_user(host_stx->stx_size, &target_stx->stx_size); 7695 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 7696 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 7697 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 7698 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 7699 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 7700 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 7701 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 7702 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 7703 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 7704 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 7705 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 7706 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 7707 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 7708 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 7709 7710 unlock_user_struct(target_stx, target_addr, 1); 7711 7712 return 0; 7713 } 7714 #endif 7715 7716 static int do_sys_futex(int *uaddr, int op, int val, 7717 const struct timespec *timeout, int *uaddr2, 7718 int val3) 7719 { 7720 #if HOST_LONG_BITS == 64 7721 #if defined(__NR_futex) 7722 /* always a 64-bit time_t, it doesn't define _time64 version */ 7723 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7724 7725 #endif 7726 #else /* HOST_LONG_BITS == 64 */ 7727 #if defined(__NR_futex_time64) 7728 if (sizeof(timeout->tv_sec) == 8) { 7729 /* _time64 function on 32bit arch */ 7730 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 7731 } 7732 #endif 7733 #if defined(__NR_futex) 7734 /* old function on 32bit arch */ 7735 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7736 #endif 7737 #endif /* HOST_LONG_BITS == 64 */ 7738 g_assert_not_reached(); 7739 } 7740 7741 static int do_safe_futex(int *uaddr, int op, int val, 7742 const struct timespec *timeout, int *uaddr2, 7743 int val3) 7744 { 7745 #if HOST_LONG_BITS == 64 7746 #if defined(__NR_futex) 7747 /* always a 64-bit time_t, it doesn't define _time64 version */ 7748 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7749 #endif 7750 #else /* HOST_LONG_BITS == 64 */ 7751 #if defined(__NR_futex_time64) 7752 if (sizeof(timeout->tv_sec) == 8) { 7753 /* _time64 function on 32bit arch */ 7754 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 7755 val3)); 7756 } 7757 #endif 7758 #if defined(__NR_futex) 7759 /* old function on 32bit arch */ 7760 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7761 #endif 7762 #endif /* HOST_LONG_BITS == 64 */ 7763 return -TARGET_ENOSYS; 7764 } 7765 7766 /* ??? Using host futex calls even when target atomic operations 7767 are not really atomic probably breaks things. However implementing 7768 futexes locally would make futexes shared between multiple processes 7769 tricky. However they're probably useless because guest atomic 7770 operations won't work either. */ 7771 #if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64) 7772 static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr, 7773 int op, int val, target_ulong timeout, 7774 target_ulong uaddr2, int val3) 7775 { 7776 struct timespec ts, *pts = NULL; 7777 void *haddr2 = NULL; 7778 int base_op; 7779 7780 /* We assume FUTEX_* constants are the same on both host and target. */ 7781 #ifdef FUTEX_CMD_MASK 7782 base_op = op & FUTEX_CMD_MASK; 7783 #else 7784 base_op = op; 7785 #endif 7786 switch (base_op) { 7787 case FUTEX_WAIT: 7788 case FUTEX_WAIT_BITSET: 7789 val = tswap32(val); 7790 break; 7791 case FUTEX_WAKE: 7792 case FUTEX_WAKE_BITSET: 7793 timeout = 0; 7794 break; 7795 case FUTEX_FD: 7796 val = target_to_host_signal(val); 7797 timeout = 0; 7798 break; 7799 case FUTEX_CMP_REQUEUE: 7800 val3 = tswap32(val3); 7801 /* fall through */ 7802 case FUTEX_REQUEUE: 7803 case FUTEX_WAKE_OP: 7804 /* 7805 * For these, the 4th argument is not TIMEOUT, but VAL2. 7806 * But the prototype of do_safe_futex takes a pointer, so 7807 * insert casts to satisfy the compiler. We do not need 7808 * to tswap VAL2 since it's not compared to guest memory. 7809 */ 7810 pts = (struct timespec *)(uintptr_t)timeout; 7811 timeout = 0; 7812 haddr2 = g2h(cpu, uaddr2); 7813 break; 7814 default: 7815 return -TARGET_ENOSYS; 7816 } 7817 if (timeout) { 7818 pts = &ts; 7819 if (time64 7820 ? target_to_host_timespec64(pts, timeout) 7821 : target_to_host_timespec(pts, timeout)) { 7822 return -TARGET_EFAULT; 7823 } 7824 } 7825 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3); 7826 } 7827 #endif 7828 7829 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7830 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7831 abi_long handle, abi_long mount_id, 7832 abi_long flags) 7833 { 7834 struct file_handle *target_fh; 7835 struct file_handle *fh; 7836 int mid = 0; 7837 abi_long ret; 7838 char *name; 7839 unsigned int size, total_size; 7840 7841 if (get_user_s32(size, handle)) { 7842 return -TARGET_EFAULT; 7843 } 7844 7845 name = lock_user_string(pathname); 7846 if (!name) { 7847 return -TARGET_EFAULT; 7848 } 7849 7850 total_size = sizeof(struct file_handle) + size; 7851 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7852 if (!target_fh) { 7853 unlock_user(name, pathname, 0); 7854 return -TARGET_EFAULT; 7855 } 7856 7857 fh = g_malloc0(total_size); 7858 fh->handle_bytes = size; 7859 7860 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7861 unlock_user(name, pathname, 0); 7862 7863 /* man name_to_handle_at(2): 7864 * Other than the use of the handle_bytes field, the caller should treat 7865 * the file_handle structure as an opaque data type 7866 */ 7867 7868 memcpy(target_fh, fh, total_size); 7869 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7870 target_fh->handle_type = tswap32(fh->handle_type); 7871 g_free(fh); 7872 unlock_user(target_fh, handle, total_size); 7873 7874 if (put_user_s32(mid, mount_id)) { 7875 return -TARGET_EFAULT; 7876 } 7877 7878 return ret; 7879 7880 } 7881 #endif 7882 7883 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7884 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7885 abi_long flags) 7886 { 7887 struct file_handle *target_fh; 7888 struct file_handle *fh; 7889 unsigned int size, total_size; 7890 abi_long ret; 7891 7892 if (get_user_s32(size, handle)) { 7893 return -TARGET_EFAULT; 7894 } 7895 7896 total_size = sizeof(struct file_handle) + size; 7897 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7898 if (!target_fh) { 7899 return -TARGET_EFAULT; 7900 } 7901 7902 fh = g_memdup(target_fh, total_size); 7903 fh->handle_bytes = size; 7904 fh->handle_type = tswap32(target_fh->handle_type); 7905 7906 ret = get_errno(open_by_handle_at(mount_fd, fh, 7907 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7908 7909 g_free(fh); 7910 7911 unlock_user(target_fh, handle, total_size); 7912 7913 return ret; 7914 } 7915 #endif 7916 7917 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7918 7919 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7920 { 7921 int host_flags; 7922 target_sigset_t *target_mask; 7923 sigset_t host_mask; 7924 abi_long ret; 7925 7926 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 7927 return -TARGET_EINVAL; 7928 } 7929 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7930 return -TARGET_EFAULT; 7931 } 7932 7933 target_to_host_sigset(&host_mask, target_mask); 7934 7935 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7936 7937 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7938 if (ret >= 0) { 7939 fd_trans_register(ret, &target_signalfd_trans); 7940 } 7941 7942 unlock_user_struct(target_mask, mask, 0); 7943 7944 return ret; 7945 } 7946 #endif 7947 7948 /* Map host to target signal numbers for the wait family of syscalls. 7949 Assume all other status bits are the same. */ 7950 int host_to_target_waitstatus(int status) 7951 { 7952 if (WIFSIGNALED(status)) { 7953 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7954 } 7955 if (WIFSTOPPED(status)) { 7956 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7957 | (status & 0xff); 7958 } 7959 return status; 7960 } 7961 7962 static int open_self_cmdline(CPUArchState *cpu_env, int fd) 7963 { 7964 CPUState *cpu = env_cpu(cpu_env); 7965 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7966 int i; 7967 7968 for (i = 0; i < bprm->argc; i++) { 7969 size_t len = strlen(bprm->argv[i]) + 1; 7970 7971 if (write(fd, bprm->argv[i], len) != len) { 7972 return -1; 7973 } 7974 } 7975 7976 return 0; 7977 } 7978 7979 static int open_self_maps(CPUArchState *cpu_env, int fd) 7980 { 7981 CPUState *cpu = env_cpu(cpu_env); 7982 TaskState *ts = cpu->opaque; 7983 GSList *map_info = read_self_maps(); 7984 GSList *s; 7985 int count; 7986 7987 for (s = map_info; s; s = g_slist_next(s)) { 7988 MapInfo *e = (MapInfo *) s->data; 7989 7990 if (h2g_valid(e->start)) { 7991 unsigned long min = e->start; 7992 unsigned long max = e->end; 7993 int flags = page_get_flags(h2g(min)); 7994 const char *path; 7995 7996 max = h2g_valid(max - 1) ? 7997 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; 7998 7999 if (page_check_range(h2g(min), max - min, flags) == -1) { 8000 continue; 8001 } 8002 8003 #ifdef TARGET_HPPA 8004 if (h2g(max) == ts->info->stack_limit) { 8005 #else 8006 if (h2g(min) == ts->info->stack_limit) { 8007 #endif 8008 path = "[stack]"; 8009 } else { 8010 path = e->path; 8011 } 8012 8013 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 8014 " %c%c%c%c %08" PRIx64 " %s %"PRId64, 8015 h2g(min), h2g(max - 1) + 1, 8016 (flags & PAGE_READ) ? 'r' : '-', 8017 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 8018 (flags & PAGE_EXEC) ? 'x' : '-', 8019 e->is_priv ? 'p' : 's', 8020 (uint64_t) e->offset, e->dev, e->inode); 8021 if (path) { 8022 dprintf(fd, "%*s%s\n", 73 - count, "", path); 8023 } else { 8024 dprintf(fd, "\n"); 8025 } 8026 } 8027 } 8028 8029 free_self_maps(map_info); 8030 8031 #ifdef TARGET_VSYSCALL_PAGE 8032 /* 8033 * We only support execution from the vsyscall page. 8034 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 8035 */ 8036 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 8037 " --xp 00000000 00:00 0", 8038 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 8039 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]"); 8040 #endif 8041 8042 return 0; 8043 } 8044 8045 static int open_self_stat(CPUArchState *cpu_env, int fd) 8046 { 8047 CPUState *cpu = env_cpu(cpu_env); 8048 TaskState *ts = cpu->opaque; 8049 g_autoptr(GString) buf = g_string_new(NULL); 8050 int i; 8051 8052 for (i = 0; i < 44; i++) { 8053 if (i == 0) { 8054 /* pid */ 8055 g_string_printf(buf, FMT_pid " ", getpid()); 8056 } else if (i == 1) { 8057 /* app name */ 8058 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 8059 bin = bin ? bin + 1 : ts->bprm->argv[0]; 8060 g_string_printf(buf, "(%.15s) ", bin); 8061 } else if (i == 3) { 8062 /* ppid */ 8063 g_string_printf(buf, FMT_pid " ", getppid()); 8064 } else if (i == 21) { 8065 /* starttime */ 8066 g_string_printf(buf, "%" PRIu64 " ", ts->start_boottime); 8067 } else if (i == 27) { 8068 /* stack bottom */ 8069 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 8070 } else { 8071 /* for the rest, there is MasterCard */ 8072 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 8073 } 8074 8075 if (write(fd, buf->str, buf->len) != buf->len) { 8076 return -1; 8077 } 8078 } 8079 8080 return 0; 8081 } 8082 8083 static int open_self_auxv(CPUArchState *cpu_env, int fd) 8084 { 8085 CPUState *cpu = env_cpu(cpu_env); 8086 TaskState *ts = cpu->opaque; 8087 abi_ulong auxv = ts->info->saved_auxv; 8088 abi_ulong len = ts->info->auxv_len; 8089 char *ptr; 8090 8091 /* 8092 * Auxiliary vector is stored in target process stack. 8093 * read in whole auxv vector and copy it to file 8094 */ 8095 ptr = lock_user(VERIFY_READ, auxv, len, 0); 8096 if (ptr != NULL) { 8097 while (len > 0) { 8098 ssize_t r; 8099 r = write(fd, ptr, len); 8100 if (r <= 0) { 8101 break; 8102 } 8103 len -= r; 8104 ptr += r; 8105 } 8106 lseek(fd, 0, SEEK_SET); 8107 unlock_user(ptr, auxv, len); 8108 } 8109 8110 return 0; 8111 } 8112 8113 static int is_proc_myself(const char *filename, const char *entry) 8114 { 8115 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 8116 filename += strlen("/proc/"); 8117 if (!strncmp(filename, "self/", strlen("self/"))) { 8118 filename += strlen("self/"); 8119 } else if (*filename >= '1' && *filename <= '9') { 8120 char myself[80]; 8121 snprintf(myself, sizeof(myself), "%d/", getpid()); 8122 if (!strncmp(filename, myself, strlen(myself))) { 8123 filename += strlen(myself); 8124 } else { 8125 return 0; 8126 } 8127 } else { 8128 return 0; 8129 } 8130 if (!strcmp(filename, entry)) { 8131 return 1; 8132 } 8133 } 8134 return 0; 8135 } 8136 8137 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \ 8138 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) 8139 static int is_proc(const char *filename, const char *entry) 8140 { 8141 return strcmp(filename, entry) == 0; 8142 } 8143 #endif 8144 8145 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8146 static int open_net_route(CPUArchState *cpu_env, int fd) 8147 { 8148 FILE *fp; 8149 char *line = NULL; 8150 size_t len = 0; 8151 ssize_t read; 8152 8153 fp = fopen("/proc/net/route", "r"); 8154 if (fp == NULL) { 8155 return -1; 8156 } 8157 8158 /* read header */ 8159 8160 read = getline(&line, &len, fp); 8161 dprintf(fd, "%s", line); 8162 8163 /* read routes */ 8164 8165 while ((read = getline(&line, &len, fp)) != -1) { 8166 char iface[16]; 8167 uint32_t dest, gw, mask; 8168 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8169 int fields; 8170 8171 fields = sscanf(line, 8172 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8173 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8174 &mask, &mtu, &window, &irtt); 8175 if (fields != 11) { 8176 continue; 8177 } 8178 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8179 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8180 metric, tswap32(mask), mtu, window, irtt); 8181 } 8182 8183 free(line); 8184 fclose(fp); 8185 8186 return 0; 8187 } 8188 #endif 8189 8190 #if defined(TARGET_SPARC) 8191 static int open_cpuinfo(CPUArchState *cpu_env, int fd) 8192 { 8193 dprintf(fd, "type\t\t: sun4u\n"); 8194 return 0; 8195 } 8196 #endif 8197 8198 #if defined(TARGET_HPPA) 8199 static int open_cpuinfo(CPUArchState *cpu_env, int fd) 8200 { 8201 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n"); 8202 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n"); 8203 dprintf(fd, "capabilities\t: os32\n"); 8204 dprintf(fd, "model\t\t: 9000/778/B160L\n"); 8205 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n"); 8206 return 0; 8207 } 8208 #endif 8209 8210 #if defined(TARGET_M68K) 8211 static int open_hardware(CPUArchState *cpu_env, int fd) 8212 { 8213 dprintf(fd, "Model:\t\tqemu-m68k\n"); 8214 return 0; 8215 } 8216 #endif 8217 8218 static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 8219 { 8220 struct fake_open { 8221 const char *filename; 8222 int (*fill)(CPUArchState *cpu_env, int fd); 8223 int (*cmp)(const char *s1, const char *s2); 8224 }; 8225 const struct fake_open *fake_open; 8226 static const struct fake_open fakes[] = { 8227 { "maps", open_self_maps, is_proc_myself }, 8228 { "stat", open_self_stat, is_proc_myself }, 8229 { "auxv", open_self_auxv, is_proc_myself }, 8230 { "cmdline", open_self_cmdline, is_proc_myself }, 8231 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8232 { "/proc/net/route", open_net_route, is_proc }, 8233 #endif 8234 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) 8235 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8236 #endif 8237 #if defined(TARGET_M68K) 8238 { "/proc/hardware", open_hardware, is_proc }, 8239 #endif 8240 { NULL, NULL, NULL } 8241 }; 8242 8243 if (is_proc_myself(pathname, "exe")) { 8244 int execfd = qemu_getauxval(AT_EXECFD); 8245 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 8246 } 8247 8248 for (fake_open = fakes; fake_open->filename; fake_open++) { 8249 if (fake_open->cmp(pathname, fake_open->filename)) { 8250 break; 8251 } 8252 } 8253 8254 if (fake_open->filename) { 8255 const char *tmpdir; 8256 char filename[PATH_MAX]; 8257 int fd, r; 8258 8259 fd = memfd_create("qemu-open", 0); 8260 if (fd < 0) { 8261 if (errno != ENOSYS) { 8262 return fd; 8263 } 8264 /* create temporary file to map stat to */ 8265 tmpdir = getenv("TMPDIR"); 8266 if (!tmpdir) 8267 tmpdir = "/tmp"; 8268 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8269 fd = mkstemp(filename); 8270 if (fd < 0) { 8271 return fd; 8272 } 8273 unlink(filename); 8274 } 8275 8276 if ((r = fake_open->fill(cpu_env, fd))) { 8277 int e = errno; 8278 close(fd); 8279 errno = e; 8280 return r; 8281 } 8282 lseek(fd, 0, SEEK_SET); 8283 8284 return fd; 8285 } 8286 8287 return safe_openat(dirfd, path(pathname), flags, mode); 8288 } 8289 8290 #define TIMER_MAGIC 0x0caf0000 8291 #define TIMER_MAGIC_MASK 0xffff0000 8292 8293 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8294 static target_timer_t get_timer_id(abi_long arg) 8295 { 8296 target_timer_t timerid = arg; 8297 8298 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8299 return -TARGET_EINVAL; 8300 } 8301 8302 timerid &= 0xffff; 8303 8304 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8305 return -TARGET_EINVAL; 8306 } 8307 8308 return timerid; 8309 } 8310 8311 static int target_to_host_cpu_mask(unsigned long *host_mask, 8312 size_t host_size, 8313 abi_ulong target_addr, 8314 size_t target_size) 8315 { 8316 unsigned target_bits = sizeof(abi_ulong) * 8; 8317 unsigned host_bits = sizeof(*host_mask) * 8; 8318 abi_ulong *target_mask; 8319 unsigned i, j; 8320 8321 assert(host_size >= target_size); 8322 8323 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8324 if (!target_mask) { 8325 return -TARGET_EFAULT; 8326 } 8327 memset(host_mask, 0, host_size); 8328 8329 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8330 unsigned bit = i * target_bits; 8331 abi_ulong val; 8332 8333 __get_user(val, &target_mask[i]); 8334 for (j = 0; j < target_bits; j++, bit++) { 8335 if (val & (1UL << j)) { 8336 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8337 } 8338 } 8339 } 8340 8341 unlock_user(target_mask, target_addr, 0); 8342 return 0; 8343 } 8344 8345 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8346 size_t host_size, 8347 abi_ulong target_addr, 8348 size_t target_size) 8349 { 8350 unsigned target_bits = sizeof(abi_ulong) * 8; 8351 unsigned host_bits = sizeof(*host_mask) * 8; 8352 abi_ulong *target_mask; 8353 unsigned i, j; 8354 8355 assert(host_size >= target_size); 8356 8357 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8358 if (!target_mask) { 8359 return -TARGET_EFAULT; 8360 } 8361 8362 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8363 unsigned bit = i * target_bits; 8364 abi_ulong val = 0; 8365 8366 for (j = 0; j < target_bits; j++, bit++) { 8367 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8368 val |= 1UL << j; 8369 } 8370 } 8371 __put_user(val, &target_mask[i]); 8372 } 8373 8374 unlock_user(target_mask, target_addr, target_size); 8375 return 0; 8376 } 8377 8378 #ifdef TARGET_NR_getdents 8379 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count) 8380 { 8381 g_autofree void *hdirp = NULL; 8382 void *tdirp; 8383 int hlen, hoff, toff; 8384 int hreclen, treclen; 8385 off64_t prev_diroff = 0; 8386 8387 hdirp = g_try_malloc(count); 8388 if (!hdirp) { 8389 return -TARGET_ENOMEM; 8390 } 8391 8392 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8393 hlen = sys_getdents(dirfd, hdirp, count); 8394 #else 8395 hlen = sys_getdents64(dirfd, hdirp, count); 8396 #endif 8397 8398 hlen = get_errno(hlen); 8399 if (is_error(hlen)) { 8400 return hlen; 8401 } 8402 8403 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8404 if (!tdirp) { 8405 return -TARGET_EFAULT; 8406 } 8407 8408 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8409 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8410 struct linux_dirent *hde = hdirp + hoff; 8411 #else 8412 struct linux_dirent64 *hde = hdirp + hoff; 8413 #endif 8414 struct target_dirent *tde = tdirp + toff; 8415 int namelen; 8416 uint8_t type; 8417 8418 namelen = strlen(hde->d_name); 8419 hreclen = hde->d_reclen; 8420 treclen = offsetof(struct target_dirent, d_name) + namelen + 2; 8421 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent)); 8422 8423 if (toff + treclen > count) { 8424 /* 8425 * If the host struct is smaller than the target struct, or 8426 * requires less alignment and thus packs into less space, 8427 * then the host can return more entries than we can pass 8428 * on to the guest. 8429 */ 8430 if (toff == 0) { 8431 toff = -TARGET_EINVAL; /* result buffer is too small */ 8432 break; 8433 } 8434 /* 8435 * Return what we have, resetting the file pointer to the 8436 * location of the first record not returned. 8437 */ 8438 lseek64(dirfd, prev_diroff, SEEK_SET); 8439 break; 8440 } 8441 8442 prev_diroff = hde->d_off; 8443 tde->d_ino = tswapal(hde->d_ino); 8444 tde->d_off = tswapal(hde->d_off); 8445 tde->d_reclen = tswap16(treclen); 8446 memcpy(tde->d_name, hde->d_name, namelen + 1); 8447 8448 /* 8449 * The getdents type is in what was formerly a padding byte at the 8450 * end of the structure. 8451 */ 8452 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8453 type = *((uint8_t *)hde + hreclen - 1); 8454 #else 8455 type = hde->d_type; 8456 #endif 8457 *((uint8_t *)tde + treclen - 1) = type; 8458 } 8459 8460 unlock_user(tdirp, arg2, toff); 8461 return toff; 8462 } 8463 #endif /* TARGET_NR_getdents */ 8464 8465 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 8466 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count) 8467 { 8468 g_autofree void *hdirp = NULL; 8469 void *tdirp; 8470 int hlen, hoff, toff; 8471 int hreclen, treclen; 8472 off64_t prev_diroff = 0; 8473 8474 hdirp = g_try_malloc(count); 8475 if (!hdirp) { 8476 return -TARGET_ENOMEM; 8477 } 8478 8479 hlen = get_errno(sys_getdents64(dirfd, hdirp, count)); 8480 if (is_error(hlen)) { 8481 return hlen; 8482 } 8483 8484 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8485 if (!tdirp) { 8486 return -TARGET_EFAULT; 8487 } 8488 8489 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8490 struct linux_dirent64 *hde = hdirp + hoff; 8491 struct target_dirent64 *tde = tdirp + toff; 8492 int namelen; 8493 8494 namelen = strlen(hde->d_name) + 1; 8495 hreclen = hde->d_reclen; 8496 treclen = offsetof(struct target_dirent64, d_name) + namelen; 8497 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64)); 8498 8499 if (toff + treclen > count) { 8500 /* 8501 * If the host struct is smaller than the target struct, or 8502 * requires less alignment and thus packs into less space, 8503 * then the host can return more entries than we can pass 8504 * on to the guest. 8505 */ 8506 if (toff == 0) { 8507 toff = -TARGET_EINVAL; /* result buffer is too small */ 8508 break; 8509 } 8510 /* 8511 * Return what we have, resetting the file pointer to the 8512 * location of the first record not returned. 8513 */ 8514 lseek64(dirfd, prev_diroff, SEEK_SET); 8515 break; 8516 } 8517 8518 prev_diroff = hde->d_off; 8519 tde->d_ino = tswap64(hde->d_ino); 8520 tde->d_off = tswap64(hde->d_off); 8521 tde->d_reclen = tswap16(treclen); 8522 tde->d_type = hde->d_type; 8523 memcpy(tde->d_name, hde->d_name, namelen); 8524 } 8525 8526 unlock_user(tdirp, arg2, toff); 8527 return toff; 8528 } 8529 #endif /* TARGET_NR_getdents64 */ 8530 8531 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root) 8532 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old) 8533 #endif 8534 8535 /* This is an internal helper for do_syscall so that it is easier 8536 * to have a single return point, so that actions, such as logging 8537 * of syscall results, can be performed. 8538 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 8539 */ 8540 static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, 8541 abi_long arg2, abi_long arg3, abi_long arg4, 8542 abi_long arg5, abi_long arg6, abi_long arg7, 8543 abi_long arg8) 8544 { 8545 CPUState *cpu = env_cpu(cpu_env); 8546 abi_long ret; 8547 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 8548 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 8549 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 8550 || defined(TARGET_NR_statx) 8551 struct stat st; 8552 #endif 8553 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 8554 || defined(TARGET_NR_fstatfs) 8555 struct statfs stfs; 8556 #endif 8557 void *p; 8558 8559 switch(num) { 8560 case TARGET_NR_exit: 8561 /* In old applications this may be used to implement _exit(2). 8562 However in threaded applications it is used for thread termination, 8563 and _exit_group is used for application termination. 8564 Do thread termination if we have more then one thread. */ 8565 8566 if (block_signals()) { 8567 return -QEMU_ERESTARTSYS; 8568 } 8569 8570 pthread_mutex_lock(&clone_lock); 8571 8572 if (CPU_NEXT(first_cpu)) { 8573 TaskState *ts = cpu->opaque; 8574 8575 object_property_set_bool(OBJECT(cpu), "realized", false, NULL); 8576 object_unref(OBJECT(cpu)); 8577 /* 8578 * At this point the CPU should be unrealized and removed 8579 * from cpu lists. We can clean-up the rest of the thread 8580 * data without the lock held. 8581 */ 8582 8583 pthread_mutex_unlock(&clone_lock); 8584 8585 if (ts->child_tidptr) { 8586 put_user_u32(0, ts->child_tidptr); 8587 do_sys_futex(g2h(cpu, ts->child_tidptr), 8588 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 8589 } 8590 thread_cpu = NULL; 8591 g_free(ts); 8592 rcu_unregister_thread(); 8593 pthread_exit(NULL); 8594 } 8595 8596 pthread_mutex_unlock(&clone_lock); 8597 preexit_cleanup(cpu_env, arg1); 8598 _exit(arg1); 8599 return 0; /* avoid warning */ 8600 case TARGET_NR_read: 8601 if (arg2 == 0 && arg3 == 0) { 8602 return get_errno(safe_read(arg1, 0, 0)); 8603 } else { 8604 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8605 return -TARGET_EFAULT; 8606 ret = get_errno(safe_read(arg1, p, arg3)); 8607 if (ret >= 0 && 8608 fd_trans_host_to_target_data(arg1)) { 8609 ret = fd_trans_host_to_target_data(arg1)(p, ret); 8610 } 8611 unlock_user(p, arg2, ret); 8612 } 8613 return ret; 8614 case TARGET_NR_write: 8615 if (arg2 == 0 && arg3 == 0) { 8616 return get_errno(safe_write(arg1, 0, 0)); 8617 } 8618 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8619 return -TARGET_EFAULT; 8620 if (fd_trans_target_to_host_data(arg1)) { 8621 void *copy = g_malloc(arg3); 8622 memcpy(copy, p, arg3); 8623 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 8624 if (ret >= 0) { 8625 ret = get_errno(safe_write(arg1, copy, ret)); 8626 } 8627 g_free(copy); 8628 } else { 8629 ret = get_errno(safe_write(arg1, p, arg3)); 8630 } 8631 unlock_user(p, arg2, 0); 8632 return ret; 8633 8634 #ifdef TARGET_NR_open 8635 case TARGET_NR_open: 8636 if (!(p = lock_user_string(arg1))) 8637 return -TARGET_EFAULT; 8638 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 8639 target_to_host_bitmask(arg2, fcntl_flags_tbl), 8640 arg3)); 8641 fd_trans_unregister(ret); 8642 unlock_user(p, arg1, 0); 8643 return ret; 8644 #endif 8645 case TARGET_NR_openat: 8646 if (!(p = lock_user_string(arg2))) 8647 return -TARGET_EFAULT; 8648 ret = get_errno(do_openat(cpu_env, arg1, p, 8649 target_to_host_bitmask(arg3, fcntl_flags_tbl), 8650 arg4)); 8651 fd_trans_unregister(ret); 8652 unlock_user(p, arg2, 0); 8653 return ret; 8654 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8655 case TARGET_NR_name_to_handle_at: 8656 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 8657 return ret; 8658 #endif 8659 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8660 case TARGET_NR_open_by_handle_at: 8661 ret = do_open_by_handle_at(arg1, arg2, arg3); 8662 fd_trans_unregister(ret); 8663 return ret; 8664 #endif 8665 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 8666 case TARGET_NR_pidfd_open: 8667 return get_errno(pidfd_open(arg1, arg2)); 8668 #endif 8669 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 8670 case TARGET_NR_pidfd_send_signal: 8671 { 8672 siginfo_t uinfo; 8673 8674 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 8675 if (!p) { 8676 return -TARGET_EFAULT; 8677 } 8678 target_to_host_siginfo(&uinfo, p); 8679 unlock_user(p, arg3, 0); 8680 ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2), 8681 &uinfo, arg4)); 8682 } 8683 return ret; 8684 #endif 8685 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 8686 case TARGET_NR_pidfd_getfd: 8687 return get_errno(pidfd_getfd(arg1, arg2, arg3)); 8688 #endif 8689 case TARGET_NR_close: 8690 fd_trans_unregister(arg1); 8691 return get_errno(close(arg1)); 8692 8693 case TARGET_NR_brk: 8694 return do_brk(arg1); 8695 #ifdef TARGET_NR_fork 8696 case TARGET_NR_fork: 8697 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 8698 #endif 8699 #ifdef TARGET_NR_waitpid 8700 case TARGET_NR_waitpid: 8701 { 8702 int status; 8703 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 8704 if (!is_error(ret) && arg2 && ret 8705 && put_user_s32(host_to_target_waitstatus(status), arg2)) 8706 return -TARGET_EFAULT; 8707 } 8708 return ret; 8709 #endif 8710 #ifdef TARGET_NR_waitid 8711 case TARGET_NR_waitid: 8712 { 8713 siginfo_t info; 8714 info.si_pid = 0; 8715 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 8716 if (!is_error(ret) && arg3 && info.si_pid != 0) { 8717 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 8718 return -TARGET_EFAULT; 8719 host_to_target_siginfo(p, &info); 8720 unlock_user(p, arg3, sizeof(target_siginfo_t)); 8721 } 8722 } 8723 return ret; 8724 #endif 8725 #ifdef TARGET_NR_creat /* not on alpha */ 8726 case TARGET_NR_creat: 8727 if (!(p = lock_user_string(arg1))) 8728 return -TARGET_EFAULT; 8729 ret = get_errno(creat(p, arg2)); 8730 fd_trans_unregister(ret); 8731 unlock_user(p, arg1, 0); 8732 return ret; 8733 #endif 8734 #ifdef TARGET_NR_link 8735 case TARGET_NR_link: 8736 { 8737 void * p2; 8738 p = lock_user_string(arg1); 8739 p2 = lock_user_string(arg2); 8740 if (!p || !p2) 8741 ret = -TARGET_EFAULT; 8742 else 8743 ret = get_errno(link(p, p2)); 8744 unlock_user(p2, arg2, 0); 8745 unlock_user(p, arg1, 0); 8746 } 8747 return ret; 8748 #endif 8749 #if defined(TARGET_NR_linkat) 8750 case TARGET_NR_linkat: 8751 { 8752 void * p2 = NULL; 8753 if (!arg2 || !arg4) 8754 return -TARGET_EFAULT; 8755 p = lock_user_string(arg2); 8756 p2 = lock_user_string(arg4); 8757 if (!p || !p2) 8758 ret = -TARGET_EFAULT; 8759 else 8760 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 8761 unlock_user(p, arg2, 0); 8762 unlock_user(p2, arg4, 0); 8763 } 8764 return ret; 8765 #endif 8766 #ifdef TARGET_NR_unlink 8767 case TARGET_NR_unlink: 8768 if (!(p = lock_user_string(arg1))) 8769 return -TARGET_EFAULT; 8770 ret = get_errno(unlink(p)); 8771 unlock_user(p, arg1, 0); 8772 return ret; 8773 #endif 8774 #if defined(TARGET_NR_unlinkat) 8775 case TARGET_NR_unlinkat: 8776 if (!(p = lock_user_string(arg2))) 8777 return -TARGET_EFAULT; 8778 ret = get_errno(unlinkat(arg1, p, arg3)); 8779 unlock_user(p, arg2, 0); 8780 return ret; 8781 #endif 8782 case TARGET_NR_execve: 8783 { 8784 char **argp, **envp; 8785 int argc, envc; 8786 abi_ulong gp; 8787 abi_ulong guest_argp; 8788 abi_ulong guest_envp; 8789 abi_ulong addr; 8790 char **q; 8791 8792 argc = 0; 8793 guest_argp = arg2; 8794 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8795 if (get_user_ual(addr, gp)) 8796 return -TARGET_EFAULT; 8797 if (!addr) 8798 break; 8799 argc++; 8800 } 8801 envc = 0; 8802 guest_envp = arg3; 8803 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8804 if (get_user_ual(addr, gp)) 8805 return -TARGET_EFAULT; 8806 if (!addr) 8807 break; 8808 envc++; 8809 } 8810 8811 argp = g_new0(char *, argc + 1); 8812 envp = g_new0(char *, envc + 1); 8813 8814 for (gp = guest_argp, q = argp; gp; 8815 gp += sizeof(abi_ulong), q++) { 8816 if (get_user_ual(addr, gp)) 8817 goto execve_efault; 8818 if (!addr) 8819 break; 8820 if (!(*q = lock_user_string(addr))) 8821 goto execve_efault; 8822 } 8823 *q = NULL; 8824 8825 for (gp = guest_envp, q = envp; gp; 8826 gp += sizeof(abi_ulong), q++) { 8827 if (get_user_ual(addr, gp)) 8828 goto execve_efault; 8829 if (!addr) 8830 break; 8831 if (!(*q = lock_user_string(addr))) 8832 goto execve_efault; 8833 } 8834 *q = NULL; 8835 8836 if (!(p = lock_user_string(arg1))) 8837 goto execve_efault; 8838 /* Although execve() is not an interruptible syscall it is 8839 * a special case where we must use the safe_syscall wrapper: 8840 * if we allow a signal to happen before we make the host 8841 * syscall then we will 'lose' it, because at the point of 8842 * execve the process leaves QEMU's control. So we use the 8843 * safe syscall wrapper to ensure that we either take the 8844 * signal as a guest signal, or else it does not happen 8845 * before the execve completes and makes it the other 8846 * program's problem. 8847 */ 8848 ret = get_errno(safe_execve(p, argp, envp)); 8849 unlock_user(p, arg1, 0); 8850 8851 goto execve_end; 8852 8853 execve_efault: 8854 ret = -TARGET_EFAULT; 8855 8856 execve_end: 8857 for (gp = guest_argp, q = argp; *q; 8858 gp += sizeof(abi_ulong), q++) { 8859 if (get_user_ual(addr, gp) 8860 || !addr) 8861 break; 8862 unlock_user(*q, addr, 0); 8863 } 8864 for (gp = guest_envp, q = envp; *q; 8865 gp += sizeof(abi_ulong), q++) { 8866 if (get_user_ual(addr, gp) 8867 || !addr) 8868 break; 8869 unlock_user(*q, addr, 0); 8870 } 8871 8872 g_free(argp); 8873 g_free(envp); 8874 } 8875 return ret; 8876 case TARGET_NR_chdir: 8877 if (!(p = lock_user_string(arg1))) 8878 return -TARGET_EFAULT; 8879 ret = get_errno(chdir(p)); 8880 unlock_user(p, arg1, 0); 8881 return ret; 8882 #ifdef TARGET_NR_time 8883 case TARGET_NR_time: 8884 { 8885 time_t host_time; 8886 ret = get_errno(time(&host_time)); 8887 if (!is_error(ret) 8888 && arg1 8889 && put_user_sal(host_time, arg1)) 8890 return -TARGET_EFAULT; 8891 } 8892 return ret; 8893 #endif 8894 #ifdef TARGET_NR_mknod 8895 case TARGET_NR_mknod: 8896 if (!(p = lock_user_string(arg1))) 8897 return -TARGET_EFAULT; 8898 ret = get_errno(mknod(p, arg2, arg3)); 8899 unlock_user(p, arg1, 0); 8900 return ret; 8901 #endif 8902 #if defined(TARGET_NR_mknodat) 8903 case TARGET_NR_mknodat: 8904 if (!(p = lock_user_string(arg2))) 8905 return -TARGET_EFAULT; 8906 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8907 unlock_user(p, arg2, 0); 8908 return ret; 8909 #endif 8910 #ifdef TARGET_NR_chmod 8911 case TARGET_NR_chmod: 8912 if (!(p = lock_user_string(arg1))) 8913 return -TARGET_EFAULT; 8914 ret = get_errno(chmod(p, arg2)); 8915 unlock_user(p, arg1, 0); 8916 return ret; 8917 #endif 8918 #ifdef TARGET_NR_lseek 8919 case TARGET_NR_lseek: 8920 return get_errno(lseek(arg1, arg2, arg3)); 8921 #endif 8922 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8923 /* Alpha specific */ 8924 case TARGET_NR_getxpid: 8925 cpu_env->ir[IR_A4] = getppid(); 8926 return get_errno(getpid()); 8927 #endif 8928 #ifdef TARGET_NR_getpid 8929 case TARGET_NR_getpid: 8930 return get_errno(getpid()); 8931 #endif 8932 case TARGET_NR_mount: 8933 { 8934 /* need to look at the data field */ 8935 void *p2, *p3; 8936 8937 if (arg1) { 8938 p = lock_user_string(arg1); 8939 if (!p) { 8940 return -TARGET_EFAULT; 8941 } 8942 } else { 8943 p = NULL; 8944 } 8945 8946 p2 = lock_user_string(arg2); 8947 if (!p2) { 8948 if (arg1) { 8949 unlock_user(p, arg1, 0); 8950 } 8951 return -TARGET_EFAULT; 8952 } 8953 8954 if (arg3) { 8955 p3 = lock_user_string(arg3); 8956 if (!p3) { 8957 if (arg1) { 8958 unlock_user(p, arg1, 0); 8959 } 8960 unlock_user(p2, arg2, 0); 8961 return -TARGET_EFAULT; 8962 } 8963 } else { 8964 p3 = NULL; 8965 } 8966 8967 /* FIXME - arg5 should be locked, but it isn't clear how to 8968 * do that since it's not guaranteed to be a NULL-terminated 8969 * string. 8970 */ 8971 if (!arg5) { 8972 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8973 } else { 8974 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 8975 } 8976 ret = get_errno(ret); 8977 8978 if (arg1) { 8979 unlock_user(p, arg1, 0); 8980 } 8981 unlock_user(p2, arg2, 0); 8982 if (arg3) { 8983 unlock_user(p3, arg3, 0); 8984 } 8985 } 8986 return ret; 8987 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 8988 #if defined(TARGET_NR_umount) 8989 case TARGET_NR_umount: 8990 #endif 8991 #if defined(TARGET_NR_oldumount) 8992 case TARGET_NR_oldumount: 8993 #endif 8994 if (!(p = lock_user_string(arg1))) 8995 return -TARGET_EFAULT; 8996 ret = get_errno(umount(p)); 8997 unlock_user(p, arg1, 0); 8998 return ret; 8999 #endif 9000 #ifdef TARGET_NR_stime /* not on alpha */ 9001 case TARGET_NR_stime: 9002 { 9003 struct timespec ts; 9004 ts.tv_nsec = 0; 9005 if (get_user_sal(ts.tv_sec, arg1)) { 9006 return -TARGET_EFAULT; 9007 } 9008 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 9009 } 9010 #endif 9011 #ifdef TARGET_NR_alarm /* not on alpha */ 9012 case TARGET_NR_alarm: 9013 return alarm(arg1); 9014 #endif 9015 #ifdef TARGET_NR_pause /* not on alpha */ 9016 case TARGET_NR_pause: 9017 if (!block_signals()) { 9018 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 9019 } 9020 return -TARGET_EINTR; 9021 #endif 9022 #ifdef TARGET_NR_utime 9023 case TARGET_NR_utime: 9024 { 9025 struct utimbuf tbuf, *host_tbuf; 9026 struct target_utimbuf *target_tbuf; 9027 if (arg2) { 9028 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 9029 return -TARGET_EFAULT; 9030 tbuf.actime = tswapal(target_tbuf->actime); 9031 tbuf.modtime = tswapal(target_tbuf->modtime); 9032 unlock_user_struct(target_tbuf, arg2, 0); 9033 host_tbuf = &tbuf; 9034 } else { 9035 host_tbuf = NULL; 9036 } 9037 if (!(p = lock_user_string(arg1))) 9038 return -TARGET_EFAULT; 9039 ret = get_errno(utime(p, host_tbuf)); 9040 unlock_user(p, arg1, 0); 9041 } 9042 return ret; 9043 #endif 9044 #ifdef TARGET_NR_utimes 9045 case TARGET_NR_utimes: 9046 { 9047 struct timeval *tvp, tv[2]; 9048 if (arg2) { 9049 if (copy_from_user_timeval(&tv[0], arg2) 9050 || copy_from_user_timeval(&tv[1], 9051 arg2 + sizeof(struct target_timeval))) 9052 return -TARGET_EFAULT; 9053 tvp = tv; 9054 } else { 9055 tvp = NULL; 9056 } 9057 if (!(p = lock_user_string(arg1))) 9058 return -TARGET_EFAULT; 9059 ret = get_errno(utimes(p, tvp)); 9060 unlock_user(p, arg1, 0); 9061 } 9062 return ret; 9063 #endif 9064 #if defined(TARGET_NR_futimesat) 9065 case TARGET_NR_futimesat: 9066 { 9067 struct timeval *tvp, tv[2]; 9068 if (arg3) { 9069 if (copy_from_user_timeval(&tv[0], arg3) 9070 || copy_from_user_timeval(&tv[1], 9071 arg3 + sizeof(struct target_timeval))) 9072 return -TARGET_EFAULT; 9073 tvp = tv; 9074 } else { 9075 tvp = NULL; 9076 } 9077 if (!(p = lock_user_string(arg2))) { 9078 return -TARGET_EFAULT; 9079 } 9080 ret = get_errno(futimesat(arg1, path(p), tvp)); 9081 unlock_user(p, arg2, 0); 9082 } 9083 return ret; 9084 #endif 9085 #ifdef TARGET_NR_access 9086 case TARGET_NR_access: 9087 if (!(p = lock_user_string(arg1))) { 9088 return -TARGET_EFAULT; 9089 } 9090 ret = get_errno(access(path(p), arg2)); 9091 unlock_user(p, arg1, 0); 9092 return ret; 9093 #endif 9094 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 9095 case TARGET_NR_faccessat: 9096 if (!(p = lock_user_string(arg2))) { 9097 return -TARGET_EFAULT; 9098 } 9099 ret = get_errno(faccessat(arg1, p, arg3, 0)); 9100 unlock_user(p, arg2, 0); 9101 return ret; 9102 #endif 9103 #ifdef TARGET_NR_nice /* not on alpha */ 9104 case TARGET_NR_nice: 9105 return get_errno(nice(arg1)); 9106 #endif 9107 case TARGET_NR_sync: 9108 sync(); 9109 return 0; 9110 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 9111 case TARGET_NR_syncfs: 9112 return get_errno(syncfs(arg1)); 9113 #endif 9114 case TARGET_NR_kill: 9115 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 9116 #ifdef TARGET_NR_rename 9117 case TARGET_NR_rename: 9118 { 9119 void *p2; 9120 p = lock_user_string(arg1); 9121 p2 = lock_user_string(arg2); 9122 if (!p || !p2) 9123 ret = -TARGET_EFAULT; 9124 else 9125 ret = get_errno(rename(p, p2)); 9126 unlock_user(p2, arg2, 0); 9127 unlock_user(p, arg1, 0); 9128 } 9129 return ret; 9130 #endif 9131 #if defined(TARGET_NR_renameat) 9132 case TARGET_NR_renameat: 9133 { 9134 void *p2; 9135 p = lock_user_string(arg2); 9136 p2 = lock_user_string(arg4); 9137 if (!p || !p2) 9138 ret = -TARGET_EFAULT; 9139 else 9140 ret = get_errno(renameat(arg1, p, arg3, p2)); 9141 unlock_user(p2, arg4, 0); 9142 unlock_user(p, arg2, 0); 9143 } 9144 return ret; 9145 #endif 9146 #if defined(TARGET_NR_renameat2) 9147 case TARGET_NR_renameat2: 9148 { 9149 void *p2; 9150 p = lock_user_string(arg2); 9151 p2 = lock_user_string(arg4); 9152 if (!p || !p2) { 9153 ret = -TARGET_EFAULT; 9154 } else { 9155 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 9156 } 9157 unlock_user(p2, arg4, 0); 9158 unlock_user(p, arg2, 0); 9159 } 9160 return ret; 9161 #endif 9162 #ifdef TARGET_NR_mkdir 9163 case TARGET_NR_mkdir: 9164 if (!(p = lock_user_string(arg1))) 9165 return -TARGET_EFAULT; 9166 ret = get_errno(mkdir(p, arg2)); 9167 unlock_user(p, arg1, 0); 9168 return ret; 9169 #endif 9170 #if defined(TARGET_NR_mkdirat) 9171 case TARGET_NR_mkdirat: 9172 if (!(p = lock_user_string(arg2))) 9173 return -TARGET_EFAULT; 9174 ret = get_errno(mkdirat(arg1, p, arg3)); 9175 unlock_user(p, arg2, 0); 9176 return ret; 9177 #endif 9178 #ifdef TARGET_NR_rmdir 9179 case TARGET_NR_rmdir: 9180 if (!(p = lock_user_string(arg1))) 9181 return -TARGET_EFAULT; 9182 ret = get_errno(rmdir(p)); 9183 unlock_user(p, arg1, 0); 9184 return ret; 9185 #endif 9186 case TARGET_NR_dup: 9187 ret = get_errno(dup(arg1)); 9188 if (ret >= 0) { 9189 fd_trans_dup(arg1, ret); 9190 } 9191 return ret; 9192 #ifdef TARGET_NR_pipe 9193 case TARGET_NR_pipe: 9194 return do_pipe(cpu_env, arg1, 0, 0); 9195 #endif 9196 #ifdef TARGET_NR_pipe2 9197 case TARGET_NR_pipe2: 9198 return do_pipe(cpu_env, arg1, 9199 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 9200 #endif 9201 case TARGET_NR_times: 9202 { 9203 struct target_tms *tmsp; 9204 struct tms tms; 9205 ret = get_errno(times(&tms)); 9206 if (arg1) { 9207 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 9208 if (!tmsp) 9209 return -TARGET_EFAULT; 9210 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 9211 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 9212 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 9213 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 9214 } 9215 if (!is_error(ret)) 9216 ret = host_to_target_clock_t(ret); 9217 } 9218 return ret; 9219 case TARGET_NR_acct: 9220 if (arg1 == 0) { 9221 ret = get_errno(acct(NULL)); 9222 } else { 9223 if (!(p = lock_user_string(arg1))) { 9224 return -TARGET_EFAULT; 9225 } 9226 ret = get_errno(acct(path(p))); 9227 unlock_user(p, arg1, 0); 9228 } 9229 return ret; 9230 #ifdef TARGET_NR_umount2 9231 case TARGET_NR_umount2: 9232 if (!(p = lock_user_string(arg1))) 9233 return -TARGET_EFAULT; 9234 ret = get_errno(umount2(p, arg2)); 9235 unlock_user(p, arg1, 0); 9236 return ret; 9237 #endif 9238 case TARGET_NR_ioctl: 9239 return do_ioctl(arg1, arg2, arg3); 9240 #ifdef TARGET_NR_fcntl 9241 case TARGET_NR_fcntl: 9242 return do_fcntl(arg1, arg2, arg3); 9243 #endif 9244 case TARGET_NR_setpgid: 9245 return get_errno(setpgid(arg1, arg2)); 9246 case TARGET_NR_umask: 9247 return get_errno(umask(arg1)); 9248 case TARGET_NR_chroot: 9249 if (!(p = lock_user_string(arg1))) 9250 return -TARGET_EFAULT; 9251 ret = get_errno(chroot(p)); 9252 unlock_user(p, arg1, 0); 9253 return ret; 9254 #ifdef TARGET_NR_dup2 9255 case TARGET_NR_dup2: 9256 ret = get_errno(dup2(arg1, arg2)); 9257 if (ret >= 0) { 9258 fd_trans_dup(arg1, arg2); 9259 } 9260 return ret; 9261 #endif 9262 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 9263 case TARGET_NR_dup3: 9264 { 9265 int host_flags; 9266 9267 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 9268 return -EINVAL; 9269 } 9270 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 9271 ret = get_errno(dup3(arg1, arg2, host_flags)); 9272 if (ret >= 0) { 9273 fd_trans_dup(arg1, arg2); 9274 } 9275 return ret; 9276 } 9277 #endif 9278 #ifdef TARGET_NR_getppid /* not on alpha */ 9279 case TARGET_NR_getppid: 9280 return get_errno(getppid()); 9281 #endif 9282 #ifdef TARGET_NR_getpgrp 9283 case TARGET_NR_getpgrp: 9284 return get_errno(getpgrp()); 9285 #endif 9286 case TARGET_NR_setsid: 9287 return get_errno(setsid()); 9288 #ifdef TARGET_NR_sigaction 9289 case TARGET_NR_sigaction: 9290 { 9291 #if defined(TARGET_MIPS) 9292 struct target_sigaction act, oact, *pact, *old_act; 9293 9294 if (arg2) { 9295 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9296 return -TARGET_EFAULT; 9297 act._sa_handler = old_act->_sa_handler; 9298 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 9299 act.sa_flags = old_act->sa_flags; 9300 unlock_user_struct(old_act, arg2, 0); 9301 pact = &act; 9302 } else { 9303 pact = NULL; 9304 } 9305 9306 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9307 9308 if (!is_error(ret) && arg3) { 9309 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9310 return -TARGET_EFAULT; 9311 old_act->_sa_handler = oact._sa_handler; 9312 old_act->sa_flags = oact.sa_flags; 9313 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9314 old_act->sa_mask.sig[1] = 0; 9315 old_act->sa_mask.sig[2] = 0; 9316 old_act->sa_mask.sig[3] = 0; 9317 unlock_user_struct(old_act, arg3, 1); 9318 } 9319 #else 9320 struct target_old_sigaction *old_act; 9321 struct target_sigaction act, oact, *pact; 9322 if (arg2) { 9323 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9324 return -TARGET_EFAULT; 9325 act._sa_handler = old_act->_sa_handler; 9326 target_siginitset(&act.sa_mask, old_act->sa_mask); 9327 act.sa_flags = old_act->sa_flags; 9328 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9329 act.sa_restorer = old_act->sa_restorer; 9330 #endif 9331 unlock_user_struct(old_act, arg2, 0); 9332 pact = &act; 9333 } else { 9334 pact = NULL; 9335 } 9336 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9337 if (!is_error(ret) && arg3) { 9338 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9339 return -TARGET_EFAULT; 9340 old_act->_sa_handler = oact._sa_handler; 9341 old_act->sa_mask = oact.sa_mask.sig[0]; 9342 old_act->sa_flags = oact.sa_flags; 9343 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9344 old_act->sa_restorer = oact.sa_restorer; 9345 #endif 9346 unlock_user_struct(old_act, arg3, 1); 9347 } 9348 #endif 9349 } 9350 return ret; 9351 #endif 9352 case TARGET_NR_rt_sigaction: 9353 { 9354 /* 9355 * For Alpha and SPARC this is a 5 argument syscall, with 9356 * a 'restorer' parameter which must be copied into the 9357 * sa_restorer field of the sigaction struct. 9358 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9359 * and arg5 is the sigsetsize. 9360 */ 9361 #if defined(TARGET_ALPHA) 9362 target_ulong sigsetsize = arg4; 9363 target_ulong restorer = arg5; 9364 #elif defined(TARGET_SPARC) 9365 target_ulong restorer = arg4; 9366 target_ulong sigsetsize = arg5; 9367 #else 9368 target_ulong sigsetsize = arg4; 9369 target_ulong restorer = 0; 9370 #endif 9371 struct target_sigaction *act = NULL; 9372 struct target_sigaction *oact = NULL; 9373 9374 if (sigsetsize != sizeof(target_sigset_t)) { 9375 return -TARGET_EINVAL; 9376 } 9377 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9378 return -TARGET_EFAULT; 9379 } 9380 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9381 ret = -TARGET_EFAULT; 9382 } else { 9383 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9384 if (oact) { 9385 unlock_user_struct(oact, arg3, 1); 9386 } 9387 } 9388 if (act) { 9389 unlock_user_struct(act, arg2, 0); 9390 } 9391 } 9392 return ret; 9393 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9394 case TARGET_NR_sgetmask: 9395 { 9396 sigset_t cur_set; 9397 abi_ulong target_set; 9398 ret = do_sigprocmask(0, NULL, &cur_set); 9399 if (!ret) { 9400 host_to_target_old_sigset(&target_set, &cur_set); 9401 ret = target_set; 9402 } 9403 } 9404 return ret; 9405 #endif 9406 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9407 case TARGET_NR_ssetmask: 9408 { 9409 sigset_t set, oset; 9410 abi_ulong target_set = arg1; 9411 target_to_host_old_sigset(&set, &target_set); 9412 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9413 if (!ret) { 9414 host_to_target_old_sigset(&target_set, &oset); 9415 ret = target_set; 9416 } 9417 } 9418 return ret; 9419 #endif 9420 #ifdef TARGET_NR_sigprocmask 9421 case TARGET_NR_sigprocmask: 9422 { 9423 #if defined(TARGET_ALPHA) 9424 sigset_t set, oldset; 9425 abi_ulong mask; 9426 int how; 9427 9428 switch (arg1) { 9429 case TARGET_SIG_BLOCK: 9430 how = SIG_BLOCK; 9431 break; 9432 case TARGET_SIG_UNBLOCK: 9433 how = SIG_UNBLOCK; 9434 break; 9435 case TARGET_SIG_SETMASK: 9436 how = SIG_SETMASK; 9437 break; 9438 default: 9439 return -TARGET_EINVAL; 9440 } 9441 mask = arg2; 9442 target_to_host_old_sigset(&set, &mask); 9443 9444 ret = do_sigprocmask(how, &set, &oldset); 9445 if (!is_error(ret)) { 9446 host_to_target_old_sigset(&mask, &oldset); 9447 ret = mask; 9448 cpu_env->ir[IR_V0] = 0; /* force no error */ 9449 } 9450 #else 9451 sigset_t set, oldset, *set_ptr; 9452 int how; 9453 9454 if (arg2) { 9455 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9456 if (!p) { 9457 return -TARGET_EFAULT; 9458 } 9459 target_to_host_old_sigset(&set, p); 9460 unlock_user(p, arg2, 0); 9461 set_ptr = &set; 9462 switch (arg1) { 9463 case TARGET_SIG_BLOCK: 9464 how = SIG_BLOCK; 9465 break; 9466 case TARGET_SIG_UNBLOCK: 9467 how = SIG_UNBLOCK; 9468 break; 9469 case TARGET_SIG_SETMASK: 9470 how = SIG_SETMASK; 9471 break; 9472 default: 9473 return -TARGET_EINVAL; 9474 } 9475 } else { 9476 how = 0; 9477 set_ptr = NULL; 9478 } 9479 ret = do_sigprocmask(how, set_ptr, &oldset); 9480 if (!is_error(ret) && arg3) { 9481 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9482 return -TARGET_EFAULT; 9483 host_to_target_old_sigset(p, &oldset); 9484 unlock_user(p, arg3, sizeof(target_sigset_t)); 9485 } 9486 #endif 9487 } 9488 return ret; 9489 #endif 9490 case TARGET_NR_rt_sigprocmask: 9491 { 9492 int how = arg1; 9493 sigset_t set, oldset, *set_ptr; 9494 9495 if (arg4 != sizeof(target_sigset_t)) { 9496 return -TARGET_EINVAL; 9497 } 9498 9499 if (arg2) { 9500 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9501 if (!p) { 9502 return -TARGET_EFAULT; 9503 } 9504 target_to_host_sigset(&set, p); 9505 unlock_user(p, arg2, 0); 9506 set_ptr = &set; 9507 switch(how) { 9508 case TARGET_SIG_BLOCK: 9509 how = SIG_BLOCK; 9510 break; 9511 case TARGET_SIG_UNBLOCK: 9512 how = SIG_UNBLOCK; 9513 break; 9514 case TARGET_SIG_SETMASK: 9515 how = SIG_SETMASK; 9516 break; 9517 default: 9518 return -TARGET_EINVAL; 9519 } 9520 } else { 9521 how = 0; 9522 set_ptr = NULL; 9523 } 9524 ret = do_sigprocmask(how, set_ptr, &oldset); 9525 if (!is_error(ret) && arg3) { 9526 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9527 return -TARGET_EFAULT; 9528 host_to_target_sigset(p, &oldset); 9529 unlock_user(p, arg3, sizeof(target_sigset_t)); 9530 } 9531 } 9532 return ret; 9533 #ifdef TARGET_NR_sigpending 9534 case TARGET_NR_sigpending: 9535 { 9536 sigset_t set; 9537 ret = get_errno(sigpending(&set)); 9538 if (!is_error(ret)) { 9539 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9540 return -TARGET_EFAULT; 9541 host_to_target_old_sigset(p, &set); 9542 unlock_user(p, arg1, sizeof(target_sigset_t)); 9543 } 9544 } 9545 return ret; 9546 #endif 9547 case TARGET_NR_rt_sigpending: 9548 { 9549 sigset_t set; 9550 9551 /* Yes, this check is >, not != like most. We follow the kernel's 9552 * logic and it does it like this because it implements 9553 * NR_sigpending through the same code path, and in that case 9554 * the old_sigset_t is smaller in size. 9555 */ 9556 if (arg2 > sizeof(target_sigset_t)) { 9557 return -TARGET_EINVAL; 9558 } 9559 9560 ret = get_errno(sigpending(&set)); 9561 if (!is_error(ret)) { 9562 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9563 return -TARGET_EFAULT; 9564 host_to_target_sigset(p, &set); 9565 unlock_user(p, arg1, sizeof(target_sigset_t)); 9566 } 9567 } 9568 return ret; 9569 #ifdef TARGET_NR_sigsuspend 9570 case TARGET_NR_sigsuspend: 9571 { 9572 sigset_t *set; 9573 9574 #if defined(TARGET_ALPHA) 9575 TaskState *ts = cpu->opaque; 9576 /* target_to_host_old_sigset will bswap back */ 9577 abi_ulong mask = tswapal(arg1); 9578 set = &ts->sigsuspend_mask; 9579 target_to_host_old_sigset(set, &mask); 9580 #else 9581 ret = process_sigsuspend_mask(&set, arg1, sizeof(target_sigset_t)); 9582 if (ret != 0) { 9583 return ret; 9584 } 9585 #endif 9586 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 9587 finish_sigsuspend_mask(ret); 9588 } 9589 return ret; 9590 #endif 9591 case TARGET_NR_rt_sigsuspend: 9592 { 9593 sigset_t *set; 9594 9595 ret = process_sigsuspend_mask(&set, arg1, arg2); 9596 if (ret != 0) { 9597 return ret; 9598 } 9599 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 9600 finish_sigsuspend_mask(ret); 9601 } 9602 return ret; 9603 #ifdef TARGET_NR_rt_sigtimedwait 9604 case TARGET_NR_rt_sigtimedwait: 9605 { 9606 sigset_t set; 9607 struct timespec uts, *puts; 9608 siginfo_t uinfo; 9609 9610 if (arg4 != sizeof(target_sigset_t)) { 9611 return -TARGET_EINVAL; 9612 } 9613 9614 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9615 return -TARGET_EFAULT; 9616 target_to_host_sigset(&set, p); 9617 unlock_user(p, arg1, 0); 9618 if (arg3) { 9619 puts = &uts; 9620 if (target_to_host_timespec(puts, arg3)) { 9621 return -TARGET_EFAULT; 9622 } 9623 } else { 9624 puts = NULL; 9625 } 9626 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9627 SIGSET_T_SIZE)); 9628 if (!is_error(ret)) { 9629 if (arg2) { 9630 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 9631 0); 9632 if (!p) { 9633 return -TARGET_EFAULT; 9634 } 9635 host_to_target_siginfo(p, &uinfo); 9636 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9637 } 9638 ret = host_to_target_signal(ret); 9639 } 9640 } 9641 return ret; 9642 #endif 9643 #ifdef TARGET_NR_rt_sigtimedwait_time64 9644 case TARGET_NR_rt_sigtimedwait_time64: 9645 { 9646 sigset_t set; 9647 struct timespec uts, *puts; 9648 siginfo_t uinfo; 9649 9650 if (arg4 != sizeof(target_sigset_t)) { 9651 return -TARGET_EINVAL; 9652 } 9653 9654 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 9655 if (!p) { 9656 return -TARGET_EFAULT; 9657 } 9658 target_to_host_sigset(&set, p); 9659 unlock_user(p, arg1, 0); 9660 if (arg3) { 9661 puts = &uts; 9662 if (target_to_host_timespec64(puts, arg3)) { 9663 return -TARGET_EFAULT; 9664 } 9665 } else { 9666 puts = NULL; 9667 } 9668 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9669 SIGSET_T_SIZE)); 9670 if (!is_error(ret)) { 9671 if (arg2) { 9672 p = lock_user(VERIFY_WRITE, arg2, 9673 sizeof(target_siginfo_t), 0); 9674 if (!p) { 9675 return -TARGET_EFAULT; 9676 } 9677 host_to_target_siginfo(p, &uinfo); 9678 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9679 } 9680 ret = host_to_target_signal(ret); 9681 } 9682 } 9683 return ret; 9684 #endif 9685 case TARGET_NR_rt_sigqueueinfo: 9686 { 9687 siginfo_t uinfo; 9688 9689 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9690 if (!p) { 9691 return -TARGET_EFAULT; 9692 } 9693 target_to_host_siginfo(&uinfo, p); 9694 unlock_user(p, arg3, 0); 9695 ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo)); 9696 } 9697 return ret; 9698 case TARGET_NR_rt_tgsigqueueinfo: 9699 { 9700 siginfo_t uinfo; 9701 9702 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 9703 if (!p) { 9704 return -TARGET_EFAULT; 9705 } 9706 target_to_host_siginfo(&uinfo, p); 9707 unlock_user(p, arg4, 0); 9708 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo)); 9709 } 9710 return ret; 9711 #ifdef TARGET_NR_sigreturn 9712 case TARGET_NR_sigreturn: 9713 if (block_signals()) { 9714 return -QEMU_ERESTARTSYS; 9715 } 9716 return do_sigreturn(cpu_env); 9717 #endif 9718 case TARGET_NR_rt_sigreturn: 9719 if (block_signals()) { 9720 return -QEMU_ERESTARTSYS; 9721 } 9722 return do_rt_sigreturn(cpu_env); 9723 case TARGET_NR_sethostname: 9724 if (!(p = lock_user_string(arg1))) 9725 return -TARGET_EFAULT; 9726 ret = get_errno(sethostname(p, arg2)); 9727 unlock_user(p, arg1, 0); 9728 return ret; 9729 #ifdef TARGET_NR_setrlimit 9730 case TARGET_NR_setrlimit: 9731 { 9732 int resource = target_to_host_resource(arg1); 9733 struct target_rlimit *target_rlim; 9734 struct rlimit rlim; 9735 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 9736 return -TARGET_EFAULT; 9737 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 9738 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 9739 unlock_user_struct(target_rlim, arg2, 0); 9740 /* 9741 * If we just passed through resource limit settings for memory then 9742 * they would also apply to QEMU's own allocations, and QEMU will 9743 * crash or hang or die if its allocations fail. Ideally we would 9744 * track the guest allocations in QEMU and apply the limits ourselves. 9745 * For now, just tell the guest the call succeeded but don't actually 9746 * limit anything. 9747 */ 9748 if (resource != RLIMIT_AS && 9749 resource != RLIMIT_DATA && 9750 resource != RLIMIT_STACK) { 9751 return get_errno(setrlimit(resource, &rlim)); 9752 } else { 9753 return 0; 9754 } 9755 } 9756 #endif 9757 #ifdef TARGET_NR_getrlimit 9758 case TARGET_NR_getrlimit: 9759 { 9760 int resource = target_to_host_resource(arg1); 9761 struct target_rlimit *target_rlim; 9762 struct rlimit rlim; 9763 9764 ret = get_errno(getrlimit(resource, &rlim)); 9765 if (!is_error(ret)) { 9766 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 9767 return -TARGET_EFAULT; 9768 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 9769 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 9770 unlock_user_struct(target_rlim, arg2, 1); 9771 } 9772 } 9773 return ret; 9774 #endif 9775 case TARGET_NR_getrusage: 9776 { 9777 struct rusage rusage; 9778 ret = get_errno(getrusage(arg1, &rusage)); 9779 if (!is_error(ret)) { 9780 ret = host_to_target_rusage(arg2, &rusage); 9781 } 9782 } 9783 return ret; 9784 #if defined(TARGET_NR_gettimeofday) 9785 case TARGET_NR_gettimeofday: 9786 { 9787 struct timeval tv; 9788 struct timezone tz; 9789 9790 ret = get_errno(gettimeofday(&tv, &tz)); 9791 if (!is_error(ret)) { 9792 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 9793 return -TARGET_EFAULT; 9794 } 9795 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 9796 return -TARGET_EFAULT; 9797 } 9798 } 9799 } 9800 return ret; 9801 #endif 9802 #if defined(TARGET_NR_settimeofday) 9803 case TARGET_NR_settimeofday: 9804 { 9805 struct timeval tv, *ptv = NULL; 9806 struct timezone tz, *ptz = NULL; 9807 9808 if (arg1) { 9809 if (copy_from_user_timeval(&tv, arg1)) { 9810 return -TARGET_EFAULT; 9811 } 9812 ptv = &tv; 9813 } 9814 9815 if (arg2) { 9816 if (copy_from_user_timezone(&tz, arg2)) { 9817 return -TARGET_EFAULT; 9818 } 9819 ptz = &tz; 9820 } 9821 9822 return get_errno(settimeofday(ptv, ptz)); 9823 } 9824 #endif 9825 #if defined(TARGET_NR_select) 9826 case TARGET_NR_select: 9827 #if defined(TARGET_WANT_NI_OLD_SELECT) 9828 /* some architectures used to have old_select here 9829 * but now ENOSYS it. 9830 */ 9831 ret = -TARGET_ENOSYS; 9832 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 9833 ret = do_old_select(arg1); 9834 #else 9835 ret = do_select(arg1, arg2, arg3, arg4, arg5); 9836 #endif 9837 return ret; 9838 #endif 9839 #ifdef TARGET_NR_pselect6 9840 case TARGET_NR_pselect6: 9841 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 9842 #endif 9843 #ifdef TARGET_NR_pselect6_time64 9844 case TARGET_NR_pselect6_time64: 9845 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 9846 #endif 9847 #ifdef TARGET_NR_symlink 9848 case TARGET_NR_symlink: 9849 { 9850 void *p2; 9851 p = lock_user_string(arg1); 9852 p2 = lock_user_string(arg2); 9853 if (!p || !p2) 9854 ret = -TARGET_EFAULT; 9855 else 9856 ret = get_errno(symlink(p, p2)); 9857 unlock_user(p2, arg2, 0); 9858 unlock_user(p, arg1, 0); 9859 } 9860 return ret; 9861 #endif 9862 #if defined(TARGET_NR_symlinkat) 9863 case TARGET_NR_symlinkat: 9864 { 9865 void *p2; 9866 p = lock_user_string(arg1); 9867 p2 = lock_user_string(arg3); 9868 if (!p || !p2) 9869 ret = -TARGET_EFAULT; 9870 else 9871 ret = get_errno(symlinkat(p, arg2, p2)); 9872 unlock_user(p2, arg3, 0); 9873 unlock_user(p, arg1, 0); 9874 } 9875 return ret; 9876 #endif 9877 #ifdef TARGET_NR_readlink 9878 case TARGET_NR_readlink: 9879 { 9880 void *p2; 9881 p = lock_user_string(arg1); 9882 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9883 if (!p || !p2) { 9884 ret = -TARGET_EFAULT; 9885 } else if (!arg3) { 9886 /* Short circuit this for the magic exe check. */ 9887 ret = -TARGET_EINVAL; 9888 } else if (is_proc_myself((const char *)p, "exe")) { 9889 char real[PATH_MAX], *temp; 9890 temp = realpath(exec_path, real); 9891 /* Return value is # of bytes that we wrote to the buffer. */ 9892 if (temp == NULL) { 9893 ret = get_errno(-1); 9894 } else { 9895 /* Don't worry about sign mismatch as earlier mapping 9896 * logic would have thrown a bad address error. */ 9897 ret = MIN(strlen(real), arg3); 9898 /* We cannot NUL terminate the string. */ 9899 memcpy(p2, real, ret); 9900 } 9901 } else { 9902 ret = get_errno(readlink(path(p), p2, arg3)); 9903 } 9904 unlock_user(p2, arg2, ret); 9905 unlock_user(p, arg1, 0); 9906 } 9907 return ret; 9908 #endif 9909 #if defined(TARGET_NR_readlinkat) 9910 case TARGET_NR_readlinkat: 9911 { 9912 void *p2; 9913 p = lock_user_string(arg2); 9914 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9915 if (!p || !p2) { 9916 ret = -TARGET_EFAULT; 9917 } else if (!arg4) { 9918 /* Short circuit this for the magic exe check. */ 9919 ret = -TARGET_EINVAL; 9920 } else if (is_proc_myself((const char *)p, "exe")) { 9921 char real[PATH_MAX], *temp; 9922 temp = realpath(exec_path, real); 9923 /* Return value is # of bytes that we wrote to the buffer. */ 9924 if (temp == NULL) { 9925 ret = get_errno(-1); 9926 } else { 9927 /* Don't worry about sign mismatch as earlier mapping 9928 * logic would have thrown a bad address error. */ 9929 ret = MIN(strlen(real), arg4); 9930 /* We cannot NUL terminate the string. */ 9931 memcpy(p2, real, ret); 9932 } 9933 } else { 9934 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9935 } 9936 unlock_user(p2, arg3, ret); 9937 unlock_user(p, arg2, 0); 9938 } 9939 return ret; 9940 #endif 9941 #ifdef TARGET_NR_swapon 9942 case TARGET_NR_swapon: 9943 if (!(p = lock_user_string(arg1))) 9944 return -TARGET_EFAULT; 9945 ret = get_errno(swapon(p, arg2)); 9946 unlock_user(p, arg1, 0); 9947 return ret; 9948 #endif 9949 case TARGET_NR_reboot: 9950 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9951 /* arg4 must be ignored in all other cases */ 9952 p = lock_user_string(arg4); 9953 if (!p) { 9954 return -TARGET_EFAULT; 9955 } 9956 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9957 unlock_user(p, arg4, 0); 9958 } else { 9959 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9960 } 9961 return ret; 9962 #ifdef TARGET_NR_mmap 9963 case TARGET_NR_mmap: 9964 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9965 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9966 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9967 || defined(TARGET_S390X) 9968 { 9969 abi_ulong *v; 9970 abi_ulong v1, v2, v3, v4, v5, v6; 9971 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9972 return -TARGET_EFAULT; 9973 v1 = tswapal(v[0]); 9974 v2 = tswapal(v[1]); 9975 v3 = tswapal(v[2]); 9976 v4 = tswapal(v[3]); 9977 v5 = tswapal(v[4]); 9978 v6 = tswapal(v[5]); 9979 unlock_user(v, arg1, 0); 9980 ret = get_errno(target_mmap(v1, v2, v3, 9981 target_to_host_bitmask(v4, mmap_flags_tbl), 9982 v5, v6)); 9983 } 9984 #else 9985 /* mmap pointers are always untagged */ 9986 ret = get_errno(target_mmap(arg1, arg2, arg3, 9987 target_to_host_bitmask(arg4, mmap_flags_tbl), 9988 arg5, 9989 arg6)); 9990 #endif 9991 return ret; 9992 #endif 9993 #ifdef TARGET_NR_mmap2 9994 case TARGET_NR_mmap2: 9995 #ifndef MMAP_SHIFT 9996 #define MMAP_SHIFT 12 9997 #endif 9998 ret = target_mmap(arg1, arg2, arg3, 9999 target_to_host_bitmask(arg4, mmap_flags_tbl), 10000 arg5, arg6 << MMAP_SHIFT); 10001 return get_errno(ret); 10002 #endif 10003 case TARGET_NR_munmap: 10004 arg1 = cpu_untagged_addr(cpu, arg1); 10005 return get_errno(target_munmap(arg1, arg2)); 10006 case TARGET_NR_mprotect: 10007 arg1 = cpu_untagged_addr(cpu, arg1); 10008 { 10009 TaskState *ts = cpu->opaque; 10010 /* Special hack to detect libc making the stack executable. */ 10011 if ((arg3 & PROT_GROWSDOWN) 10012 && arg1 >= ts->info->stack_limit 10013 && arg1 <= ts->info->start_stack) { 10014 arg3 &= ~PROT_GROWSDOWN; 10015 arg2 = arg2 + arg1 - ts->info->stack_limit; 10016 arg1 = ts->info->stack_limit; 10017 } 10018 } 10019 return get_errno(target_mprotect(arg1, arg2, arg3)); 10020 #ifdef TARGET_NR_mremap 10021 case TARGET_NR_mremap: 10022 arg1 = cpu_untagged_addr(cpu, arg1); 10023 /* mremap new_addr (arg5) is always untagged */ 10024 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 10025 #endif 10026 /* ??? msync/mlock/munlock are broken for softmmu. */ 10027 #ifdef TARGET_NR_msync 10028 case TARGET_NR_msync: 10029 return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); 10030 #endif 10031 #ifdef TARGET_NR_mlock 10032 case TARGET_NR_mlock: 10033 return get_errno(mlock(g2h(cpu, arg1), arg2)); 10034 #endif 10035 #ifdef TARGET_NR_munlock 10036 case TARGET_NR_munlock: 10037 return get_errno(munlock(g2h(cpu, arg1), arg2)); 10038 #endif 10039 #ifdef TARGET_NR_mlockall 10040 case TARGET_NR_mlockall: 10041 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 10042 #endif 10043 #ifdef TARGET_NR_munlockall 10044 case TARGET_NR_munlockall: 10045 return get_errno(munlockall()); 10046 #endif 10047 #ifdef TARGET_NR_truncate 10048 case TARGET_NR_truncate: 10049 if (!(p = lock_user_string(arg1))) 10050 return -TARGET_EFAULT; 10051 ret = get_errno(truncate(p, arg2)); 10052 unlock_user(p, arg1, 0); 10053 return ret; 10054 #endif 10055 #ifdef TARGET_NR_ftruncate 10056 case TARGET_NR_ftruncate: 10057 return get_errno(ftruncate(arg1, arg2)); 10058 #endif 10059 case TARGET_NR_fchmod: 10060 return get_errno(fchmod(arg1, arg2)); 10061 #if defined(TARGET_NR_fchmodat) 10062 case TARGET_NR_fchmodat: 10063 if (!(p = lock_user_string(arg2))) 10064 return -TARGET_EFAULT; 10065 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 10066 unlock_user(p, arg2, 0); 10067 return ret; 10068 #endif 10069 case TARGET_NR_getpriority: 10070 /* Note that negative values are valid for getpriority, so we must 10071 differentiate based on errno settings. */ 10072 errno = 0; 10073 ret = getpriority(arg1, arg2); 10074 if (ret == -1 && errno != 0) { 10075 return -host_to_target_errno(errno); 10076 } 10077 #ifdef TARGET_ALPHA 10078 /* Return value is the unbiased priority. Signal no error. */ 10079 cpu_env->ir[IR_V0] = 0; 10080 #else 10081 /* Return value is a biased priority to avoid negative numbers. */ 10082 ret = 20 - ret; 10083 #endif 10084 return ret; 10085 case TARGET_NR_setpriority: 10086 return get_errno(setpriority(arg1, arg2, arg3)); 10087 #ifdef TARGET_NR_statfs 10088 case TARGET_NR_statfs: 10089 if (!(p = lock_user_string(arg1))) { 10090 return -TARGET_EFAULT; 10091 } 10092 ret = get_errno(statfs(path(p), &stfs)); 10093 unlock_user(p, arg1, 0); 10094 convert_statfs: 10095 if (!is_error(ret)) { 10096 struct target_statfs *target_stfs; 10097 10098 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 10099 return -TARGET_EFAULT; 10100 __put_user(stfs.f_type, &target_stfs->f_type); 10101 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10102 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10103 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10104 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10105 __put_user(stfs.f_files, &target_stfs->f_files); 10106 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10107 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10108 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10109 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10110 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10111 #ifdef _STATFS_F_FLAGS 10112 __put_user(stfs.f_flags, &target_stfs->f_flags); 10113 #else 10114 __put_user(0, &target_stfs->f_flags); 10115 #endif 10116 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10117 unlock_user_struct(target_stfs, arg2, 1); 10118 } 10119 return ret; 10120 #endif 10121 #ifdef TARGET_NR_fstatfs 10122 case TARGET_NR_fstatfs: 10123 ret = get_errno(fstatfs(arg1, &stfs)); 10124 goto convert_statfs; 10125 #endif 10126 #ifdef TARGET_NR_statfs64 10127 case TARGET_NR_statfs64: 10128 if (!(p = lock_user_string(arg1))) { 10129 return -TARGET_EFAULT; 10130 } 10131 ret = get_errno(statfs(path(p), &stfs)); 10132 unlock_user(p, arg1, 0); 10133 convert_statfs64: 10134 if (!is_error(ret)) { 10135 struct target_statfs64 *target_stfs; 10136 10137 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 10138 return -TARGET_EFAULT; 10139 __put_user(stfs.f_type, &target_stfs->f_type); 10140 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10141 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10142 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10143 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10144 __put_user(stfs.f_files, &target_stfs->f_files); 10145 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10146 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10147 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10148 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10149 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10150 #ifdef _STATFS_F_FLAGS 10151 __put_user(stfs.f_flags, &target_stfs->f_flags); 10152 #else 10153 __put_user(0, &target_stfs->f_flags); 10154 #endif 10155 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10156 unlock_user_struct(target_stfs, arg3, 1); 10157 } 10158 return ret; 10159 case TARGET_NR_fstatfs64: 10160 ret = get_errno(fstatfs(arg1, &stfs)); 10161 goto convert_statfs64; 10162 #endif 10163 #ifdef TARGET_NR_socketcall 10164 case TARGET_NR_socketcall: 10165 return do_socketcall(arg1, arg2); 10166 #endif 10167 #ifdef TARGET_NR_accept 10168 case TARGET_NR_accept: 10169 return do_accept4(arg1, arg2, arg3, 0); 10170 #endif 10171 #ifdef TARGET_NR_accept4 10172 case TARGET_NR_accept4: 10173 return do_accept4(arg1, arg2, arg3, arg4); 10174 #endif 10175 #ifdef TARGET_NR_bind 10176 case TARGET_NR_bind: 10177 return do_bind(arg1, arg2, arg3); 10178 #endif 10179 #ifdef TARGET_NR_connect 10180 case TARGET_NR_connect: 10181 return do_connect(arg1, arg2, arg3); 10182 #endif 10183 #ifdef TARGET_NR_getpeername 10184 case TARGET_NR_getpeername: 10185 return do_getpeername(arg1, arg2, arg3); 10186 #endif 10187 #ifdef TARGET_NR_getsockname 10188 case TARGET_NR_getsockname: 10189 return do_getsockname(arg1, arg2, arg3); 10190 #endif 10191 #ifdef TARGET_NR_getsockopt 10192 case TARGET_NR_getsockopt: 10193 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 10194 #endif 10195 #ifdef TARGET_NR_listen 10196 case TARGET_NR_listen: 10197 return get_errno(listen(arg1, arg2)); 10198 #endif 10199 #ifdef TARGET_NR_recv 10200 case TARGET_NR_recv: 10201 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 10202 #endif 10203 #ifdef TARGET_NR_recvfrom 10204 case TARGET_NR_recvfrom: 10205 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 10206 #endif 10207 #ifdef TARGET_NR_recvmsg 10208 case TARGET_NR_recvmsg: 10209 return do_sendrecvmsg(arg1, arg2, arg3, 0); 10210 #endif 10211 #ifdef TARGET_NR_send 10212 case TARGET_NR_send: 10213 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 10214 #endif 10215 #ifdef TARGET_NR_sendmsg 10216 case TARGET_NR_sendmsg: 10217 return do_sendrecvmsg(arg1, arg2, arg3, 1); 10218 #endif 10219 #ifdef TARGET_NR_sendmmsg 10220 case TARGET_NR_sendmmsg: 10221 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 10222 #endif 10223 #ifdef TARGET_NR_recvmmsg 10224 case TARGET_NR_recvmmsg: 10225 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 10226 #endif 10227 #ifdef TARGET_NR_sendto 10228 case TARGET_NR_sendto: 10229 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 10230 #endif 10231 #ifdef TARGET_NR_shutdown 10232 case TARGET_NR_shutdown: 10233 return get_errno(shutdown(arg1, arg2)); 10234 #endif 10235 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 10236 case TARGET_NR_getrandom: 10237 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 10238 if (!p) { 10239 return -TARGET_EFAULT; 10240 } 10241 ret = get_errno(getrandom(p, arg2, arg3)); 10242 unlock_user(p, arg1, ret); 10243 return ret; 10244 #endif 10245 #ifdef TARGET_NR_socket 10246 case TARGET_NR_socket: 10247 return do_socket(arg1, arg2, arg3); 10248 #endif 10249 #ifdef TARGET_NR_socketpair 10250 case TARGET_NR_socketpair: 10251 return do_socketpair(arg1, arg2, arg3, arg4); 10252 #endif 10253 #ifdef TARGET_NR_setsockopt 10254 case TARGET_NR_setsockopt: 10255 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 10256 #endif 10257 #if defined(TARGET_NR_syslog) 10258 case TARGET_NR_syslog: 10259 { 10260 int len = arg2; 10261 10262 switch (arg1) { 10263 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 10264 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 10265 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 10266 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 10267 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 10268 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 10269 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 10270 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 10271 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 10272 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 10273 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 10274 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 10275 { 10276 if (len < 0) { 10277 return -TARGET_EINVAL; 10278 } 10279 if (len == 0) { 10280 return 0; 10281 } 10282 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10283 if (!p) { 10284 return -TARGET_EFAULT; 10285 } 10286 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 10287 unlock_user(p, arg2, arg3); 10288 } 10289 return ret; 10290 default: 10291 return -TARGET_EINVAL; 10292 } 10293 } 10294 break; 10295 #endif 10296 case TARGET_NR_setitimer: 10297 { 10298 struct itimerval value, ovalue, *pvalue; 10299 10300 if (arg2) { 10301 pvalue = &value; 10302 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 10303 || copy_from_user_timeval(&pvalue->it_value, 10304 arg2 + sizeof(struct target_timeval))) 10305 return -TARGET_EFAULT; 10306 } else { 10307 pvalue = NULL; 10308 } 10309 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 10310 if (!is_error(ret) && arg3) { 10311 if (copy_to_user_timeval(arg3, 10312 &ovalue.it_interval) 10313 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10314 &ovalue.it_value)) 10315 return -TARGET_EFAULT; 10316 } 10317 } 10318 return ret; 10319 case TARGET_NR_getitimer: 10320 { 10321 struct itimerval value; 10322 10323 ret = get_errno(getitimer(arg1, &value)); 10324 if (!is_error(ret) && arg2) { 10325 if (copy_to_user_timeval(arg2, 10326 &value.it_interval) 10327 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10328 &value.it_value)) 10329 return -TARGET_EFAULT; 10330 } 10331 } 10332 return ret; 10333 #ifdef TARGET_NR_stat 10334 case TARGET_NR_stat: 10335 if (!(p = lock_user_string(arg1))) { 10336 return -TARGET_EFAULT; 10337 } 10338 ret = get_errno(stat(path(p), &st)); 10339 unlock_user(p, arg1, 0); 10340 goto do_stat; 10341 #endif 10342 #ifdef TARGET_NR_lstat 10343 case TARGET_NR_lstat: 10344 if (!(p = lock_user_string(arg1))) { 10345 return -TARGET_EFAULT; 10346 } 10347 ret = get_errno(lstat(path(p), &st)); 10348 unlock_user(p, arg1, 0); 10349 goto do_stat; 10350 #endif 10351 #ifdef TARGET_NR_fstat 10352 case TARGET_NR_fstat: 10353 { 10354 ret = get_errno(fstat(arg1, &st)); 10355 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10356 do_stat: 10357 #endif 10358 if (!is_error(ret)) { 10359 struct target_stat *target_st; 10360 10361 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10362 return -TARGET_EFAULT; 10363 memset(target_st, 0, sizeof(*target_st)); 10364 __put_user(st.st_dev, &target_st->st_dev); 10365 __put_user(st.st_ino, &target_st->st_ino); 10366 __put_user(st.st_mode, &target_st->st_mode); 10367 __put_user(st.st_uid, &target_st->st_uid); 10368 __put_user(st.st_gid, &target_st->st_gid); 10369 __put_user(st.st_nlink, &target_st->st_nlink); 10370 __put_user(st.st_rdev, &target_st->st_rdev); 10371 __put_user(st.st_size, &target_st->st_size); 10372 __put_user(st.st_blksize, &target_st->st_blksize); 10373 __put_user(st.st_blocks, &target_st->st_blocks); 10374 __put_user(st.st_atime, &target_st->target_st_atime); 10375 __put_user(st.st_mtime, &target_st->target_st_mtime); 10376 __put_user(st.st_ctime, &target_st->target_st_ctime); 10377 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC) 10378 __put_user(st.st_atim.tv_nsec, 10379 &target_st->target_st_atime_nsec); 10380 __put_user(st.st_mtim.tv_nsec, 10381 &target_st->target_st_mtime_nsec); 10382 __put_user(st.st_ctim.tv_nsec, 10383 &target_st->target_st_ctime_nsec); 10384 #endif 10385 unlock_user_struct(target_st, arg2, 1); 10386 } 10387 } 10388 return ret; 10389 #endif 10390 case TARGET_NR_vhangup: 10391 return get_errno(vhangup()); 10392 #ifdef TARGET_NR_syscall 10393 case TARGET_NR_syscall: 10394 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10395 arg6, arg7, arg8, 0); 10396 #endif 10397 #if defined(TARGET_NR_wait4) 10398 case TARGET_NR_wait4: 10399 { 10400 int status; 10401 abi_long status_ptr = arg2; 10402 struct rusage rusage, *rusage_ptr; 10403 abi_ulong target_rusage = arg4; 10404 abi_long rusage_err; 10405 if (target_rusage) 10406 rusage_ptr = &rusage; 10407 else 10408 rusage_ptr = NULL; 10409 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10410 if (!is_error(ret)) { 10411 if (status_ptr && ret) { 10412 status = host_to_target_waitstatus(status); 10413 if (put_user_s32(status, status_ptr)) 10414 return -TARGET_EFAULT; 10415 } 10416 if (target_rusage) { 10417 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10418 if (rusage_err) { 10419 ret = rusage_err; 10420 } 10421 } 10422 } 10423 } 10424 return ret; 10425 #endif 10426 #ifdef TARGET_NR_swapoff 10427 case TARGET_NR_swapoff: 10428 if (!(p = lock_user_string(arg1))) 10429 return -TARGET_EFAULT; 10430 ret = get_errno(swapoff(p)); 10431 unlock_user(p, arg1, 0); 10432 return ret; 10433 #endif 10434 case TARGET_NR_sysinfo: 10435 { 10436 struct target_sysinfo *target_value; 10437 struct sysinfo value; 10438 ret = get_errno(sysinfo(&value)); 10439 if (!is_error(ret) && arg1) 10440 { 10441 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10442 return -TARGET_EFAULT; 10443 __put_user(value.uptime, &target_value->uptime); 10444 __put_user(value.loads[0], &target_value->loads[0]); 10445 __put_user(value.loads[1], &target_value->loads[1]); 10446 __put_user(value.loads[2], &target_value->loads[2]); 10447 __put_user(value.totalram, &target_value->totalram); 10448 __put_user(value.freeram, &target_value->freeram); 10449 __put_user(value.sharedram, &target_value->sharedram); 10450 __put_user(value.bufferram, &target_value->bufferram); 10451 __put_user(value.totalswap, &target_value->totalswap); 10452 __put_user(value.freeswap, &target_value->freeswap); 10453 __put_user(value.procs, &target_value->procs); 10454 __put_user(value.totalhigh, &target_value->totalhigh); 10455 __put_user(value.freehigh, &target_value->freehigh); 10456 __put_user(value.mem_unit, &target_value->mem_unit); 10457 unlock_user_struct(target_value, arg1, 1); 10458 } 10459 } 10460 return ret; 10461 #ifdef TARGET_NR_ipc 10462 case TARGET_NR_ipc: 10463 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10464 #endif 10465 #ifdef TARGET_NR_semget 10466 case TARGET_NR_semget: 10467 return get_errno(semget(arg1, arg2, arg3)); 10468 #endif 10469 #ifdef TARGET_NR_semop 10470 case TARGET_NR_semop: 10471 return do_semtimedop(arg1, arg2, arg3, 0, false); 10472 #endif 10473 #ifdef TARGET_NR_semtimedop 10474 case TARGET_NR_semtimedop: 10475 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10476 #endif 10477 #ifdef TARGET_NR_semtimedop_time64 10478 case TARGET_NR_semtimedop_time64: 10479 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10480 #endif 10481 #ifdef TARGET_NR_semctl 10482 case TARGET_NR_semctl: 10483 return do_semctl(arg1, arg2, arg3, arg4); 10484 #endif 10485 #ifdef TARGET_NR_msgctl 10486 case TARGET_NR_msgctl: 10487 return do_msgctl(arg1, arg2, arg3); 10488 #endif 10489 #ifdef TARGET_NR_msgget 10490 case TARGET_NR_msgget: 10491 return get_errno(msgget(arg1, arg2)); 10492 #endif 10493 #ifdef TARGET_NR_msgrcv 10494 case TARGET_NR_msgrcv: 10495 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10496 #endif 10497 #ifdef TARGET_NR_msgsnd 10498 case TARGET_NR_msgsnd: 10499 return do_msgsnd(arg1, arg2, arg3, arg4); 10500 #endif 10501 #ifdef TARGET_NR_shmget 10502 case TARGET_NR_shmget: 10503 return get_errno(shmget(arg1, arg2, arg3)); 10504 #endif 10505 #ifdef TARGET_NR_shmctl 10506 case TARGET_NR_shmctl: 10507 return do_shmctl(arg1, arg2, arg3); 10508 #endif 10509 #ifdef TARGET_NR_shmat 10510 case TARGET_NR_shmat: 10511 return do_shmat(cpu_env, arg1, arg2, arg3); 10512 #endif 10513 #ifdef TARGET_NR_shmdt 10514 case TARGET_NR_shmdt: 10515 return do_shmdt(arg1); 10516 #endif 10517 case TARGET_NR_fsync: 10518 return get_errno(fsync(arg1)); 10519 case TARGET_NR_clone: 10520 /* Linux manages to have three different orderings for its 10521 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 10522 * match the kernel's CONFIG_CLONE_* settings. 10523 * Microblaze is further special in that it uses a sixth 10524 * implicit argument to clone for the TLS pointer. 10525 */ 10526 #if defined(TARGET_MICROBLAZE) 10527 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 10528 #elif defined(TARGET_CLONE_BACKWARDS) 10529 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 10530 #elif defined(TARGET_CLONE_BACKWARDS2) 10531 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 10532 #else 10533 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 10534 #endif 10535 return ret; 10536 #ifdef __NR_exit_group 10537 /* new thread calls */ 10538 case TARGET_NR_exit_group: 10539 preexit_cleanup(cpu_env, arg1); 10540 return get_errno(exit_group(arg1)); 10541 #endif 10542 case TARGET_NR_setdomainname: 10543 if (!(p = lock_user_string(arg1))) 10544 return -TARGET_EFAULT; 10545 ret = get_errno(setdomainname(p, arg2)); 10546 unlock_user(p, arg1, 0); 10547 return ret; 10548 case TARGET_NR_uname: 10549 /* no need to transcode because we use the linux syscall */ 10550 { 10551 struct new_utsname * buf; 10552 10553 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 10554 return -TARGET_EFAULT; 10555 ret = get_errno(sys_uname(buf)); 10556 if (!is_error(ret)) { 10557 /* Overwrite the native machine name with whatever is being 10558 emulated. */ 10559 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 10560 sizeof(buf->machine)); 10561 /* Allow the user to override the reported release. */ 10562 if (qemu_uname_release && *qemu_uname_release) { 10563 g_strlcpy(buf->release, qemu_uname_release, 10564 sizeof(buf->release)); 10565 } 10566 } 10567 unlock_user_struct(buf, arg1, 1); 10568 } 10569 return ret; 10570 #ifdef TARGET_I386 10571 case TARGET_NR_modify_ldt: 10572 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 10573 #if !defined(TARGET_X86_64) 10574 case TARGET_NR_vm86: 10575 return do_vm86(cpu_env, arg1, arg2); 10576 #endif 10577 #endif 10578 #if defined(TARGET_NR_adjtimex) 10579 case TARGET_NR_adjtimex: 10580 { 10581 struct timex host_buf; 10582 10583 if (target_to_host_timex(&host_buf, arg1) != 0) { 10584 return -TARGET_EFAULT; 10585 } 10586 ret = get_errno(adjtimex(&host_buf)); 10587 if (!is_error(ret)) { 10588 if (host_to_target_timex(arg1, &host_buf) != 0) { 10589 return -TARGET_EFAULT; 10590 } 10591 } 10592 } 10593 return ret; 10594 #endif 10595 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 10596 case TARGET_NR_clock_adjtime: 10597 { 10598 struct timex htx, *phtx = &htx; 10599 10600 if (target_to_host_timex(phtx, arg2) != 0) { 10601 return -TARGET_EFAULT; 10602 } 10603 ret = get_errno(clock_adjtime(arg1, phtx)); 10604 if (!is_error(ret) && phtx) { 10605 if (host_to_target_timex(arg2, phtx) != 0) { 10606 return -TARGET_EFAULT; 10607 } 10608 } 10609 } 10610 return ret; 10611 #endif 10612 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 10613 case TARGET_NR_clock_adjtime64: 10614 { 10615 struct timex htx; 10616 10617 if (target_to_host_timex64(&htx, arg2) != 0) { 10618 return -TARGET_EFAULT; 10619 } 10620 ret = get_errno(clock_adjtime(arg1, &htx)); 10621 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 10622 return -TARGET_EFAULT; 10623 } 10624 } 10625 return ret; 10626 #endif 10627 case TARGET_NR_getpgid: 10628 return get_errno(getpgid(arg1)); 10629 case TARGET_NR_fchdir: 10630 return get_errno(fchdir(arg1)); 10631 case TARGET_NR_personality: 10632 return get_errno(personality(arg1)); 10633 #ifdef TARGET_NR__llseek /* Not on alpha */ 10634 case TARGET_NR__llseek: 10635 { 10636 int64_t res; 10637 #if !defined(__NR_llseek) 10638 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 10639 if (res == -1) { 10640 ret = get_errno(res); 10641 } else { 10642 ret = 0; 10643 } 10644 #else 10645 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 10646 #endif 10647 if ((ret == 0) && put_user_s64(res, arg4)) { 10648 return -TARGET_EFAULT; 10649 } 10650 } 10651 return ret; 10652 #endif 10653 #ifdef TARGET_NR_getdents 10654 case TARGET_NR_getdents: 10655 return do_getdents(arg1, arg2, arg3); 10656 #endif /* TARGET_NR_getdents */ 10657 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10658 case TARGET_NR_getdents64: 10659 return do_getdents64(arg1, arg2, arg3); 10660 #endif /* TARGET_NR_getdents64 */ 10661 #if defined(TARGET_NR__newselect) 10662 case TARGET_NR__newselect: 10663 return do_select(arg1, arg2, arg3, arg4, arg5); 10664 #endif 10665 #ifdef TARGET_NR_poll 10666 case TARGET_NR_poll: 10667 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 10668 #endif 10669 #ifdef TARGET_NR_ppoll 10670 case TARGET_NR_ppoll: 10671 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 10672 #endif 10673 #ifdef TARGET_NR_ppoll_time64 10674 case TARGET_NR_ppoll_time64: 10675 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 10676 #endif 10677 case TARGET_NR_flock: 10678 /* NOTE: the flock constant seems to be the same for every 10679 Linux platform */ 10680 return get_errno(safe_flock(arg1, arg2)); 10681 case TARGET_NR_readv: 10682 { 10683 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10684 if (vec != NULL) { 10685 ret = get_errno(safe_readv(arg1, vec, arg3)); 10686 unlock_iovec(vec, arg2, arg3, 1); 10687 } else { 10688 ret = -host_to_target_errno(errno); 10689 } 10690 } 10691 return ret; 10692 case TARGET_NR_writev: 10693 { 10694 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10695 if (vec != NULL) { 10696 ret = get_errno(safe_writev(arg1, vec, arg3)); 10697 unlock_iovec(vec, arg2, arg3, 0); 10698 } else { 10699 ret = -host_to_target_errno(errno); 10700 } 10701 } 10702 return ret; 10703 #if defined(TARGET_NR_preadv) 10704 case TARGET_NR_preadv: 10705 { 10706 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10707 if (vec != NULL) { 10708 unsigned long low, high; 10709 10710 target_to_host_low_high(arg4, arg5, &low, &high); 10711 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10712 unlock_iovec(vec, arg2, arg3, 1); 10713 } else { 10714 ret = -host_to_target_errno(errno); 10715 } 10716 } 10717 return ret; 10718 #endif 10719 #if defined(TARGET_NR_pwritev) 10720 case TARGET_NR_pwritev: 10721 { 10722 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10723 if (vec != NULL) { 10724 unsigned long low, high; 10725 10726 target_to_host_low_high(arg4, arg5, &low, &high); 10727 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10728 unlock_iovec(vec, arg2, arg3, 0); 10729 } else { 10730 ret = -host_to_target_errno(errno); 10731 } 10732 } 10733 return ret; 10734 #endif 10735 case TARGET_NR_getsid: 10736 return get_errno(getsid(arg1)); 10737 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10738 case TARGET_NR_fdatasync: 10739 return get_errno(fdatasync(arg1)); 10740 #endif 10741 case TARGET_NR_sched_getaffinity: 10742 { 10743 unsigned int mask_size; 10744 unsigned long *mask; 10745 10746 /* 10747 * sched_getaffinity needs multiples of ulong, so need to take 10748 * care of mismatches between target ulong and host ulong sizes. 10749 */ 10750 if (arg2 & (sizeof(abi_ulong) - 1)) { 10751 return -TARGET_EINVAL; 10752 } 10753 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10754 10755 mask = alloca(mask_size); 10756 memset(mask, 0, mask_size); 10757 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10758 10759 if (!is_error(ret)) { 10760 if (ret > arg2) { 10761 /* More data returned than the caller's buffer will fit. 10762 * This only happens if sizeof(abi_long) < sizeof(long) 10763 * and the caller passed us a buffer holding an odd number 10764 * of abi_longs. If the host kernel is actually using the 10765 * extra 4 bytes then fail EINVAL; otherwise we can just 10766 * ignore them and only copy the interesting part. 10767 */ 10768 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10769 if (numcpus > arg2 * 8) { 10770 return -TARGET_EINVAL; 10771 } 10772 ret = arg2; 10773 } 10774 10775 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10776 return -TARGET_EFAULT; 10777 } 10778 } 10779 } 10780 return ret; 10781 case TARGET_NR_sched_setaffinity: 10782 { 10783 unsigned int mask_size; 10784 unsigned long *mask; 10785 10786 /* 10787 * sched_setaffinity needs multiples of ulong, so need to take 10788 * care of mismatches between target ulong and host ulong sizes. 10789 */ 10790 if (arg2 & (sizeof(abi_ulong) - 1)) { 10791 return -TARGET_EINVAL; 10792 } 10793 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10794 mask = alloca(mask_size); 10795 10796 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10797 if (ret) { 10798 return ret; 10799 } 10800 10801 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10802 } 10803 case TARGET_NR_getcpu: 10804 { 10805 unsigned cpu, node; 10806 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10807 arg2 ? &node : NULL, 10808 NULL)); 10809 if (is_error(ret)) { 10810 return ret; 10811 } 10812 if (arg1 && put_user_u32(cpu, arg1)) { 10813 return -TARGET_EFAULT; 10814 } 10815 if (arg2 && put_user_u32(node, arg2)) { 10816 return -TARGET_EFAULT; 10817 } 10818 } 10819 return ret; 10820 case TARGET_NR_sched_setparam: 10821 { 10822 struct target_sched_param *target_schp; 10823 struct sched_param schp; 10824 10825 if (arg2 == 0) { 10826 return -TARGET_EINVAL; 10827 } 10828 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) { 10829 return -TARGET_EFAULT; 10830 } 10831 schp.sched_priority = tswap32(target_schp->sched_priority); 10832 unlock_user_struct(target_schp, arg2, 0); 10833 return get_errno(sys_sched_setparam(arg1, &schp)); 10834 } 10835 case TARGET_NR_sched_getparam: 10836 { 10837 struct target_sched_param *target_schp; 10838 struct sched_param schp; 10839 10840 if (arg2 == 0) { 10841 return -TARGET_EINVAL; 10842 } 10843 ret = get_errno(sys_sched_getparam(arg1, &schp)); 10844 if (!is_error(ret)) { 10845 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) { 10846 return -TARGET_EFAULT; 10847 } 10848 target_schp->sched_priority = tswap32(schp.sched_priority); 10849 unlock_user_struct(target_schp, arg2, 1); 10850 } 10851 } 10852 return ret; 10853 case TARGET_NR_sched_setscheduler: 10854 { 10855 struct target_sched_param *target_schp; 10856 struct sched_param schp; 10857 if (arg3 == 0) { 10858 return -TARGET_EINVAL; 10859 } 10860 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) { 10861 return -TARGET_EFAULT; 10862 } 10863 schp.sched_priority = tswap32(target_schp->sched_priority); 10864 unlock_user_struct(target_schp, arg3, 0); 10865 return get_errno(sys_sched_setscheduler(arg1, arg2, &schp)); 10866 } 10867 case TARGET_NR_sched_getscheduler: 10868 return get_errno(sys_sched_getscheduler(arg1)); 10869 case TARGET_NR_sched_getattr: 10870 { 10871 struct target_sched_attr *target_scha; 10872 struct sched_attr scha; 10873 if (arg2 == 0) { 10874 return -TARGET_EINVAL; 10875 } 10876 if (arg3 > sizeof(scha)) { 10877 arg3 = sizeof(scha); 10878 } 10879 ret = get_errno(sys_sched_getattr(arg1, &scha, arg3, arg4)); 10880 if (!is_error(ret)) { 10881 target_scha = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10882 if (!target_scha) { 10883 return -TARGET_EFAULT; 10884 } 10885 target_scha->size = tswap32(scha.size); 10886 target_scha->sched_policy = tswap32(scha.sched_policy); 10887 target_scha->sched_flags = tswap64(scha.sched_flags); 10888 target_scha->sched_nice = tswap32(scha.sched_nice); 10889 target_scha->sched_priority = tswap32(scha.sched_priority); 10890 target_scha->sched_runtime = tswap64(scha.sched_runtime); 10891 target_scha->sched_deadline = tswap64(scha.sched_deadline); 10892 target_scha->sched_period = tswap64(scha.sched_period); 10893 if (scha.size > offsetof(struct sched_attr, sched_util_min)) { 10894 target_scha->sched_util_min = tswap32(scha.sched_util_min); 10895 target_scha->sched_util_max = tswap32(scha.sched_util_max); 10896 } 10897 unlock_user(target_scha, arg2, arg3); 10898 } 10899 return ret; 10900 } 10901 case TARGET_NR_sched_setattr: 10902 { 10903 struct target_sched_attr *target_scha; 10904 struct sched_attr scha; 10905 uint32_t size; 10906 int zeroed; 10907 if (arg2 == 0) { 10908 return -TARGET_EINVAL; 10909 } 10910 if (get_user_u32(size, arg2)) { 10911 return -TARGET_EFAULT; 10912 } 10913 if (!size) { 10914 size = offsetof(struct target_sched_attr, sched_util_min); 10915 } 10916 if (size < offsetof(struct target_sched_attr, sched_util_min)) { 10917 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 10918 return -TARGET_EFAULT; 10919 } 10920 return -TARGET_E2BIG; 10921 } 10922 10923 zeroed = check_zeroed_user(arg2, sizeof(struct target_sched_attr), size); 10924 if (zeroed < 0) { 10925 return zeroed; 10926 } else if (zeroed == 0) { 10927 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 10928 return -TARGET_EFAULT; 10929 } 10930 return -TARGET_E2BIG; 10931 } 10932 if (size > sizeof(struct target_sched_attr)) { 10933 size = sizeof(struct target_sched_attr); 10934 } 10935 10936 target_scha = lock_user(VERIFY_READ, arg2, size, 1); 10937 if (!target_scha) { 10938 return -TARGET_EFAULT; 10939 } 10940 scha.size = size; 10941 scha.sched_policy = tswap32(target_scha->sched_policy); 10942 scha.sched_flags = tswap64(target_scha->sched_flags); 10943 scha.sched_nice = tswap32(target_scha->sched_nice); 10944 scha.sched_priority = tswap32(target_scha->sched_priority); 10945 scha.sched_runtime = tswap64(target_scha->sched_runtime); 10946 scha.sched_deadline = tswap64(target_scha->sched_deadline); 10947 scha.sched_period = tswap64(target_scha->sched_period); 10948 if (size > offsetof(struct target_sched_attr, sched_util_min)) { 10949 scha.sched_util_min = tswap32(target_scha->sched_util_min); 10950 scha.sched_util_max = tswap32(target_scha->sched_util_max); 10951 } 10952 unlock_user(target_scha, arg2, 0); 10953 return get_errno(sys_sched_setattr(arg1, &scha, arg3)); 10954 } 10955 case TARGET_NR_sched_yield: 10956 return get_errno(sched_yield()); 10957 case TARGET_NR_sched_get_priority_max: 10958 return get_errno(sched_get_priority_max(arg1)); 10959 case TARGET_NR_sched_get_priority_min: 10960 return get_errno(sched_get_priority_min(arg1)); 10961 #ifdef TARGET_NR_sched_rr_get_interval 10962 case TARGET_NR_sched_rr_get_interval: 10963 { 10964 struct timespec ts; 10965 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10966 if (!is_error(ret)) { 10967 ret = host_to_target_timespec(arg2, &ts); 10968 } 10969 } 10970 return ret; 10971 #endif 10972 #ifdef TARGET_NR_sched_rr_get_interval_time64 10973 case TARGET_NR_sched_rr_get_interval_time64: 10974 { 10975 struct timespec ts; 10976 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10977 if (!is_error(ret)) { 10978 ret = host_to_target_timespec64(arg2, &ts); 10979 } 10980 } 10981 return ret; 10982 #endif 10983 #if defined(TARGET_NR_nanosleep) 10984 case TARGET_NR_nanosleep: 10985 { 10986 struct timespec req, rem; 10987 target_to_host_timespec(&req, arg1); 10988 ret = get_errno(safe_nanosleep(&req, &rem)); 10989 if (is_error(ret) && arg2) { 10990 host_to_target_timespec(arg2, &rem); 10991 } 10992 } 10993 return ret; 10994 #endif 10995 case TARGET_NR_prctl: 10996 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5); 10997 break; 10998 #ifdef TARGET_NR_arch_prctl 10999 case TARGET_NR_arch_prctl: 11000 return do_arch_prctl(cpu_env, arg1, arg2); 11001 #endif 11002 #ifdef TARGET_NR_pread64 11003 case TARGET_NR_pread64: 11004 if (regpairs_aligned(cpu_env, num)) { 11005 arg4 = arg5; 11006 arg5 = arg6; 11007 } 11008 if (arg2 == 0 && arg3 == 0) { 11009 /* Special-case NULL buffer and zero length, which should succeed */ 11010 p = 0; 11011 } else { 11012 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11013 if (!p) { 11014 return -TARGET_EFAULT; 11015 } 11016 } 11017 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 11018 unlock_user(p, arg2, ret); 11019 return ret; 11020 case TARGET_NR_pwrite64: 11021 if (regpairs_aligned(cpu_env, num)) { 11022 arg4 = arg5; 11023 arg5 = arg6; 11024 } 11025 if (arg2 == 0 && arg3 == 0) { 11026 /* Special-case NULL buffer and zero length, which should succeed */ 11027 p = 0; 11028 } else { 11029 p = lock_user(VERIFY_READ, arg2, arg3, 1); 11030 if (!p) { 11031 return -TARGET_EFAULT; 11032 } 11033 } 11034 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 11035 unlock_user(p, arg2, 0); 11036 return ret; 11037 #endif 11038 case TARGET_NR_getcwd: 11039 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 11040 return -TARGET_EFAULT; 11041 ret = get_errno(sys_getcwd1(p, arg2)); 11042 unlock_user(p, arg1, ret); 11043 return ret; 11044 case TARGET_NR_capget: 11045 case TARGET_NR_capset: 11046 { 11047 struct target_user_cap_header *target_header; 11048 struct target_user_cap_data *target_data = NULL; 11049 struct __user_cap_header_struct header; 11050 struct __user_cap_data_struct data[2]; 11051 struct __user_cap_data_struct *dataptr = NULL; 11052 int i, target_datalen; 11053 int data_items = 1; 11054 11055 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 11056 return -TARGET_EFAULT; 11057 } 11058 header.version = tswap32(target_header->version); 11059 header.pid = tswap32(target_header->pid); 11060 11061 if (header.version != _LINUX_CAPABILITY_VERSION) { 11062 /* Version 2 and up takes pointer to two user_data structs */ 11063 data_items = 2; 11064 } 11065 11066 target_datalen = sizeof(*target_data) * data_items; 11067 11068 if (arg2) { 11069 if (num == TARGET_NR_capget) { 11070 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 11071 } else { 11072 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 11073 } 11074 if (!target_data) { 11075 unlock_user_struct(target_header, arg1, 0); 11076 return -TARGET_EFAULT; 11077 } 11078 11079 if (num == TARGET_NR_capset) { 11080 for (i = 0; i < data_items; i++) { 11081 data[i].effective = tswap32(target_data[i].effective); 11082 data[i].permitted = tswap32(target_data[i].permitted); 11083 data[i].inheritable = tswap32(target_data[i].inheritable); 11084 } 11085 } 11086 11087 dataptr = data; 11088 } 11089 11090 if (num == TARGET_NR_capget) { 11091 ret = get_errno(capget(&header, dataptr)); 11092 } else { 11093 ret = get_errno(capset(&header, dataptr)); 11094 } 11095 11096 /* The kernel always updates version for both capget and capset */ 11097 target_header->version = tswap32(header.version); 11098 unlock_user_struct(target_header, arg1, 1); 11099 11100 if (arg2) { 11101 if (num == TARGET_NR_capget) { 11102 for (i = 0; i < data_items; i++) { 11103 target_data[i].effective = tswap32(data[i].effective); 11104 target_data[i].permitted = tswap32(data[i].permitted); 11105 target_data[i].inheritable = tswap32(data[i].inheritable); 11106 } 11107 unlock_user(target_data, arg2, target_datalen); 11108 } else { 11109 unlock_user(target_data, arg2, 0); 11110 } 11111 } 11112 return ret; 11113 } 11114 case TARGET_NR_sigaltstack: 11115 return do_sigaltstack(arg1, arg2, cpu_env); 11116 11117 #ifdef CONFIG_SENDFILE 11118 #ifdef TARGET_NR_sendfile 11119 case TARGET_NR_sendfile: 11120 { 11121 off_t *offp = NULL; 11122 off_t off; 11123 if (arg3) { 11124 ret = get_user_sal(off, arg3); 11125 if (is_error(ret)) { 11126 return ret; 11127 } 11128 offp = &off; 11129 } 11130 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11131 if (!is_error(ret) && arg3) { 11132 abi_long ret2 = put_user_sal(off, arg3); 11133 if (is_error(ret2)) { 11134 ret = ret2; 11135 } 11136 } 11137 return ret; 11138 } 11139 #endif 11140 #ifdef TARGET_NR_sendfile64 11141 case TARGET_NR_sendfile64: 11142 { 11143 off_t *offp = NULL; 11144 off_t off; 11145 if (arg3) { 11146 ret = get_user_s64(off, arg3); 11147 if (is_error(ret)) { 11148 return ret; 11149 } 11150 offp = &off; 11151 } 11152 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11153 if (!is_error(ret) && arg3) { 11154 abi_long ret2 = put_user_s64(off, arg3); 11155 if (is_error(ret2)) { 11156 ret = ret2; 11157 } 11158 } 11159 return ret; 11160 } 11161 #endif 11162 #endif 11163 #ifdef TARGET_NR_vfork 11164 case TARGET_NR_vfork: 11165 return get_errno(do_fork(cpu_env, 11166 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 11167 0, 0, 0, 0)); 11168 #endif 11169 #ifdef TARGET_NR_ugetrlimit 11170 case TARGET_NR_ugetrlimit: 11171 { 11172 struct rlimit rlim; 11173 int resource = target_to_host_resource(arg1); 11174 ret = get_errno(getrlimit(resource, &rlim)); 11175 if (!is_error(ret)) { 11176 struct target_rlimit *target_rlim; 11177 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 11178 return -TARGET_EFAULT; 11179 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 11180 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 11181 unlock_user_struct(target_rlim, arg2, 1); 11182 } 11183 return ret; 11184 } 11185 #endif 11186 #ifdef TARGET_NR_truncate64 11187 case TARGET_NR_truncate64: 11188 if (!(p = lock_user_string(arg1))) 11189 return -TARGET_EFAULT; 11190 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 11191 unlock_user(p, arg1, 0); 11192 return ret; 11193 #endif 11194 #ifdef TARGET_NR_ftruncate64 11195 case TARGET_NR_ftruncate64: 11196 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 11197 #endif 11198 #ifdef TARGET_NR_stat64 11199 case TARGET_NR_stat64: 11200 if (!(p = lock_user_string(arg1))) { 11201 return -TARGET_EFAULT; 11202 } 11203 ret = get_errno(stat(path(p), &st)); 11204 unlock_user(p, arg1, 0); 11205 if (!is_error(ret)) 11206 ret = host_to_target_stat64(cpu_env, arg2, &st); 11207 return ret; 11208 #endif 11209 #ifdef TARGET_NR_lstat64 11210 case TARGET_NR_lstat64: 11211 if (!(p = lock_user_string(arg1))) { 11212 return -TARGET_EFAULT; 11213 } 11214 ret = get_errno(lstat(path(p), &st)); 11215 unlock_user(p, arg1, 0); 11216 if (!is_error(ret)) 11217 ret = host_to_target_stat64(cpu_env, arg2, &st); 11218 return ret; 11219 #endif 11220 #ifdef TARGET_NR_fstat64 11221 case TARGET_NR_fstat64: 11222 ret = get_errno(fstat(arg1, &st)); 11223 if (!is_error(ret)) 11224 ret = host_to_target_stat64(cpu_env, arg2, &st); 11225 return ret; 11226 #endif 11227 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11228 #ifdef TARGET_NR_fstatat64 11229 case TARGET_NR_fstatat64: 11230 #endif 11231 #ifdef TARGET_NR_newfstatat 11232 case TARGET_NR_newfstatat: 11233 #endif 11234 if (!(p = lock_user_string(arg2))) { 11235 return -TARGET_EFAULT; 11236 } 11237 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11238 unlock_user(p, arg2, 0); 11239 if (!is_error(ret)) 11240 ret = host_to_target_stat64(cpu_env, arg3, &st); 11241 return ret; 11242 #endif 11243 #if defined(TARGET_NR_statx) 11244 case TARGET_NR_statx: 11245 { 11246 struct target_statx *target_stx; 11247 int dirfd = arg1; 11248 int flags = arg3; 11249 11250 p = lock_user_string(arg2); 11251 if (p == NULL) { 11252 return -TARGET_EFAULT; 11253 } 11254 #if defined(__NR_statx) 11255 { 11256 /* 11257 * It is assumed that struct statx is architecture independent. 11258 */ 11259 struct target_statx host_stx; 11260 int mask = arg4; 11261 11262 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11263 if (!is_error(ret)) { 11264 if (host_to_target_statx(&host_stx, arg5) != 0) { 11265 unlock_user(p, arg2, 0); 11266 return -TARGET_EFAULT; 11267 } 11268 } 11269 11270 if (ret != -TARGET_ENOSYS) { 11271 unlock_user(p, arg2, 0); 11272 return ret; 11273 } 11274 } 11275 #endif 11276 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11277 unlock_user(p, arg2, 0); 11278 11279 if (!is_error(ret)) { 11280 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11281 return -TARGET_EFAULT; 11282 } 11283 memset(target_stx, 0, sizeof(*target_stx)); 11284 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11285 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11286 __put_user(st.st_ino, &target_stx->stx_ino); 11287 __put_user(st.st_mode, &target_stx->stx_mode); 11288 __put_user(st.st_uid, &target_stx->stx_uid); 11289 __put_user(st.st_gid, &target_stx->stx_gid); 11290 __put_user(st.st_nlink, &target_stx->stx_nlink); 11291 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11292 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11293 __put_user(st.st_size, &target_stx->stx_size); 11294 __put_user(st.st_blksize, &target_stx->stx_blksize); 11295 __put_user(st.st_blocks, &target_stx->stx_blocks); 11296 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11297 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11298 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11299 unlock_user_struct(target_stx, arg5, 1); 11300 } 11301 } 11302 return ret; 11303 #endif 11304 #ifdef TARGET_NR_lchown 11305 case TARGET_NR_lchown: 11306 if (!(p = lock_user_string(arg1))) 11307 return -TARGET_EFAULT; 11308 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11309 unlock_user(p, arg1, 0); 11310 return ret; 11311 #endif 11312 #ifdef TARGET_NR_getuid 11313 case TARGET_NR_getuid: 11314 return get_errno(high2lowuid(getuid())); 11315 #endif 11316 #ifdef TARGET_NR_getgid 11317 case TARGET_NR_getgid: 11318 return get_errno(high2lowgid(getgid())); 11319 #endif 11320 #ifdef TARGET_NR_geteuid 11321 case TARGET_NR_geteuid: 11322 return get_errno(high2lowuid(geteuid())); 11323 #endif 11324 #ifdef TARGET_NR_getegid 11325 case TARGET_NR_getegid: 11326 return get_errno(high2lowgid(getegid())); 11327 #endif 11328 case TARGET_NR_setreuid: 11329 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11330 case TARGET_NR_setregid: 11331 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11332 case TARGET_NR_getgroups: 11333 { 11334 int gidsetsize = arg1; 11335 target_id *target_grouplist; 11336 gid_t *grouplist; 11337 int i; 11338 11339 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11340 ret = get_errno(getgroups(gidsetsize, grouplist)); 11341 if (gidsetsize == 0) 11342 return ret; 11343 if (!is_error(ret)) { 11344 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 11345 if (!target_grouplist) 11346 return -TARGET_EFAULT; 11347 for(i = 0;i < ret; i++) 11348 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11349 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 11350 } 11351 } 11352 return ret; 11353 case TARGET_NR_setgroups: 11354 { 11355 int gidsetsize = arg1; 11356 target_id *target_grouplist; 11357 gid_t *grouplist = NULL; 11358 int i; 11359 if (gidsetsize) { 11360 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11361 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 11362 if (!target_grouplist) { 11363 return -TARGET_EFAULT; 11364 } 11365 for (i = 0; i < gidsetsize; i++) { 11366 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11367 } 11368 unlock_user(target_grouplist, arg2, 0); 11369 } 11370 return get_errno(setgroups(gidsetsize, grouplist)); 11371 } 11372 case TARGET_NR_fchown: 11373 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11374 #if defined(TARGET_NR_fchownat) 11375 case TARGET_NR_fchownat: 11376 if (!(p = lock_user_string(arg2))) 11377 return -TARGET_EFAULT; 11378 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11379 low2highgid(arg4), arg5)); 11380 unlock_user(p, arg2, 0); 11381 return ret; 11382 #endif 11383 #ifdef TARGET_NR_setresuid 11384 case TARGET_NR_setresuid: 11385 return get_errno(sys_setresuid(low2highuid(arg1), 11386 low2highuid(arg2), 11387 low2highuid(arg3))); 11388 #endif 11389 #ifdef TARGET_NR_getresuid 11390 case TARGET_NR_getresuid: 11391 { 11392 uid_t ruid, euid, suid; 11393 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11394 if (!is_error(ret)) { 11395 if (put_user_id(high2lowuid(ruid), arg1) 11396 || put_user_id(high2lowuid(euid), arg2) 11397 || put_user_id(high2lowuid(suid), arg3)) 11398 return -TARGET_EFAULT; 11399 } 11400 } 11401 return ret; 11402 #endif 11403 #ifdef TARGET_NR_getresgid 11404 case TARGET_NR_setresgid: 11405 return get_errno(sys_setresgid(low2highgid(arg1), 11406 low2highgid(arg2), 11407 low2highgid(arg3))); 11408 #endif 11409 #ifdef TARGET_NR_getresgid 11410 case TARGET_NR_getresgid: 11411 { 11412 gid_t rgid, egid, sgid; 11413 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11414 if (!is_error(ret)) { 11415 if (put_user_id(high2lowgid(rgid), arg1) 11416 || put_user_id(high2lowgid(egid), arg2) 11417 || put_user_id(high2lowgid(sgid), arg3)) 11418 return -TARGET_EFAULT; 11419 } 11420 } 11421 return ret; 11422 #endif 11423 #ifdef TARGET_NR_chown 11424 case TARGET_NR_chown: 11425 if (!(p = lock_user_string(arg1))) 11426 return -TARGET_EFAULT; 11427 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11428 unlock_user(p, arg1, 0); 11429 return ret; 11430 #endif 11431 case TARGET_NR_setuid: 11432 return get_errno(sys_setuid(low2highuid(arg1))); 11433 case TARGET_NR_setgid: 11434 return get_errno(sys_setgid(low2highgid(arg1))); 11435 case TARGET_NR_setfsuid: 11436 return get_errno(setfsuid(arg1)); 11437 case TARGET_NR_setfsgid: 11438 return get_errno(setfsgid(arg1)); 11439 11440 #ifdef TARGET_NR_lchown32 11441 case TARGET_NR_lchown32: 11442 if (!(p = lock_user_string(arg1))) 11443 return -TARGET_EFAULT; 11444 ret = get_errno(lchown(p, arg2, arg3)); 11445 unlock_user(p, arg1, 0); 11446 return ret; 11447 #endif 11448 #ifdef TARGET_NR_getuid32 11449 case TARGET_NR_getuid32: 11450 return get_errno(getuid()); 11451 #endif 11452 11453 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11454 /* Alpha specific */ 11455 case TARGET_NR_getxuid: 11456 { 11457 uid_t euid; 11458 euid=geteuid(); 11459 cpu_env->ir[IR_A4]=euid; 11460 } 11461 return get_errno(getuid()); 11462 #endif 11463 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11464 /* Alpha specific */ 11465 case TARGET_NR_getxgid: 11466 { 11467 uid_t egid; 11468 egid=getegid(); 11469 cpu_env->ir[IR_A4]=egid; 11470 } 11471 return get_errno(getgid()); 11472 #endif 11473 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11474 /* Alpha specific */ 11475 case TARGET_NR_osf_getsysinfo: 11476 ret = -TARGET_EOPNOTSUPP; 11477 switch (arg1) { 11478 case TARGET_GSI_IEEE_FP_CONTROL: 11479 { 11480 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11481 uint64_t swcr = cpu_env->swcr; 11482 11483 swcr &= ~SWCR_STATUS_MASK; 11484 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 11485 11486 if (put_user_u64 (swcr, arg2)) 11487 return -TARGET_EFAULT; 11488 ret = 0; 11489 } 11490 break; 11491 11492 /* case GSI_IEEE_STATE_AT_SIGNAL: 11493 -- Not implemented in linux kernel. 11494 case GSI_UACPROC: 11495 -- Retrieves current unaligned access state; not much used. 11496 case GSI_PROC_TYPE: 11497 -- Retrieves implver information; surely not used. 11498 case GSI_GET_HWRPB: 11499 -- Grabs a copy of the HWRPB; surely not used. 11500 */ 11501 } 11502 return ret; 11503 #endif 11504 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 11505 /* Alpha specific */ 11506 case TARGET_NR_osf_setsysinfo: 11507 ret = -TARGET_EOPNOTSUPP; 11508 switch (arg1) { 11509 case TARGET_SSI_IEEE_FP_CONTROL: 11510 { 11511 uint64_t swcr, fpcr; 11512 11513 if (get_user_u64 (swcr, arg2)) { 11514 return -TARGET_EFAULT; 11515 } 11516 11517 /* 11518 * The kernel calls swcr_update_status to update the 11519 * status bits from the fpcr at every point that it 11520 * could be queried. Therefore, we store the status 11521 * bits only in FPCR. 11522 */ 11523 cpu_env->swcr = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 11524 11525 fpcr = cpu_alpha_load_fpcr(cpu_env); 11526 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11527 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11528 cpu_alpha_store_fpcr(cpu_env, fpcr); 11529 ret = 0; 11530 } 11531 break; 11532 11533 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11534 { 11535 uint64_t exc, fpcr, fex; 11536 11537 if (get_user_u64(exc, arg2)) { 11538 return -TARGET_EFAULT; 11539 } 11540 exc &= SWCR_STATUS_MASK; 11541 fpcr = cpu_alpha_load_fpcr(cpu_env); 11542 11543 /* Old exceptions are not signaled. */ 11544 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11545 fex = exc & ~fex; 11546 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11547 fex &= (cpu_env)->swcr; 11548 11549 /* Update the hardware fpcr. */ 11550 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11551 cpu_alpha_store_fpcr(cpu_env, fpcr); 11552 11553 if (fex) { 11554 int si_code = TARGET_FPE_FLTUNK; 11555 target_siginfo_t info; 11556 11557 if (fex & SWCR_TRAP_ENABLE_DNO) { 11558 si_code = TARGET_FPE_FLTUND; 11559 } 11560 if (fex & SWCR_TRAP_ENABLE_INE) { 11561 si_code = TARGET_FPE_FLTRES; 11562 } 11563 if (fex & SWCR_TRAP_ENABLE_UNF) { 11564 si_code = TARGET_FPE_FLTUND; 11565 } 11566 if (fex & SWCR_TRAP_ENABLE_OVF) { 11567 si_code = TARGET_FPE_FLTOVF; 11568 } 11569 if (fex & SWCR_TRAP_ENABLE_DZE) { 11570 si_code = TARGET_FPE_FLTDIV; 11571 } 11572 if (fex & SWCR_TRAP_ENABLE_INV) { 11573 si_code = TARGET_FPE_FLTINV; 11574 } 11575 11576 info.si_signo = SIGFPE; 11577 info.si_errno = 0; 11578 info.si_code = si_code; 11579 info._sifields._sigfault._addr = (cpu_env)->pc; 11580 queue_signal(cpu_env, info.si_signo, 11581 QEMU_SI_FAULT, &info); 11582 } 11583 ret = 0; 11584 } 11585 break; 11586 11587 /* case SSI_NVPAIRS: 11588 -- Used with SSIN_UACPROC to enable unaligned accesses. 11589 case SSI_IEEE_STATE_AT_SIGNAL: 11590 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11591 -- Not implemented in linux kernel 11592 */ 11593 } 11594 return ret; 11595 #endif 11596 #ifdef TARGET_NR_osf_sigprocmask 11597 /* Alpha specific. */ 11598 case TARGET_NR_osf_sigprocmask: 11599 { 11600 abi_ulong mask; 11601 int how; 11602 sigset_t set, oldset; 11603 11604 switch(arg1) { 11605 case TARGET_SIG_BLOCK: 11606 how = SIG_BLOCK; 11607 break; 11608 case TARGET_SIG_UNBLOCK: 11609 how = SIG_UNBLOCK; 11610 break; 11611 case TARGET_SIG_SETMASK: 11612 how = SIG_SETMASK; 11613 break; 11614 default: 11615 return -TARGET_EINVAL; 11616 } 11617 mask = arg2; 11618 target_to_host_old_sigset(&set, &mask); 11619 ret = do_sigprocmask(how, &set, &oldset); 11620 if (!ret) { 11621 host_to_target_old_sigset(&mask, &oldset); 11622 ret = mask; 11623 } 11624 } 11625 return ret; 11626 #endif 11627 11628 #ifdef TARGET_NR_getgid32 11629 case TARGET_NR_getgid32: 11630 return get_errno(getgid()); 11631 #endif 11632 #ifdef TARGET_NR_geteuid32 11633 case TARGET_NR_geteuid32: 11634 return get_errno(geteuid()); 11635 #endif 11636 #ifdef TARGET_NR_getegid32 11637 case TARGET_NR_getegid32: 11638 return get_errno(getegid()); 11639 #endif 11640 #ifdef TARGET_NR_setreuid32 11641 case TARGET_NR_setreuid32: 11642 return get_errno(setreuid(arg1, arg2)); 11643 #endif 11644 #ifdef TARGET_NR_setregid32 11645 case TARGET_NR_setregid32: 11646 return get_errno(setregid(arg1, arg2)); 11647 #endif 11648 #ifdef TARGET_NR_getgroups32 11649 case TARGET_NR_getgroups32: 11650 { 11651 int gidsetsize = arg1; 11652 uint32_t *target_grouplist; 11653 gid_t *grouplist; 11654 int i; 11655 11656 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11657 ret = get_errno(getgroups(gidsetsize, grouplist)); 11658 if (gidsetsize == 0) 11659 return ret; 11660 if (!is_error(ret)) { 11661 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11662 if (!target_grouplist) { 11663 return -TARGET_EFAULT; 11664 } 11665 for(i = 0;i < ret; i++) 11666 target_grouplist[i] = tswap32(grouplist[i]); 11667 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11668 } 11669 } 11670 return ret; 11671 #endif 11672 #ifdef TARGET_NR_setgroups32 11673 case TARGET_NR_setgroups32: 11674 { 11675 int gidsetsize = arg1; 11676 uint32_t *target_grouplist; 11677 gid_t *grouplist; 11678 int i; 11679 11680 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11681 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11682 if (!target_grouplist) { 11683 return -TARGET_EFAULT; 11684 } 11685 for(i = 0;i < gidsetsize; i++) 11686 grouplist[i] = tswap32(target_grouplist[i]); 11687 unlock_user(target_grouplist, arg2, 0); 11688 return get_errno(setgroups(gidsetsize, grouplist)); 11689 } 11690 #endif 11691 #ifdef TARGET_NR_fchown32 11692 case TARGET_NR_fchown32: 11693 return get_errno(fchown(arg1, arg2, arg3)); 11694 #endif 11695 #ifdef TARGET_NR_setresuid32 11696 case TARGET_NR_setresuid32: 11697 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11698 #endif 11699 #ifdef TARGET_NR_getresuid32 11700 case TARGET_NR_getresuid32: 11701 { 11702 uid_t ruid, euid, suid; 11703 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11704 if (!is_error(ret)) { 11705 if (put_user_u32(ruid, arg1) 11706 || put_user_u32(euid, arg2) 11707 || put_user_u32(suid, arg3)) 11708 return -TARGET_EFAULT; 11709 } 11710 } 11711 return ret; 11712 #endif 11713 #ifdef TARGET_NR_setresgid32 11714 case TARGET_NR_setresgid32: 11715 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11716 #endif 11717 #ifdef TARGET_NR_getresgid32 11718 case TARGET_NR_getresgid32: 11719 { 11720 gid_t rgid, egid, sgid; 11721 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11722 if (!is_error(ret)) { 11723 if (put_user_u32(rgid, arg1) 11724 || put_user_u32(egid, arg2) 11725 || put_user_u32(sgid, arg3)) 11726 return -TARGET_EFAULT; 11727 } 11728 } 11729 return ret; 11730 #endif 11731 #ifdef TARGET_NR_chown32 11732 case TARGET_NR_chown32: 11733 if (!(p = lock_user_string(arg1))) 11734 return -TARGET_EFAULT; 11735 ret = get_errno(chown(p, arg2, arg3)); 11736 unlock_user(p, arg1, 0); 11737 return ret; 11738 #endif 11739 #ifdef TARGET_NR_setuid32 11740 case TARGET_NR_setuid32: 11741 return get_errno(sys_setuid(arg1)); 11742 #endif 11743 #ifdef TARGET_NR_setgid32 11744 case TARGET_NR_setgid32: 11745 return get_errno(sys_setgid(arg1)); 11746 #endif 11747 #ifdef TARGET_NR_setfsuid32 11748 case TARGET_NR_setfsuid32: 11749 return get_errno(setfsuid(arg1)); 11750 #endif 11751 #ifdef TARGET_NR_setfsgid32 11752 case TARGET_NR_setfsgid32: 11753 return get_errno(setfsgid(arg1)); 11754 #endif 11755 #ifdef TARGET_NR_mincore 11756 case TARGET_NR_mincore: 11757 { 11758 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11759 if (!a) { 11760 return -TARGET_ENOMEM; 11761 } 11762 p = lock_user_string(arg3); 11763 if (!p) { 11764 ret = -TARGET_EFAULT; 11765 } else { 11766 ret = get_errno(mincore(a, arg2, p)); 11767 unlock_user(p, arg3, ret); 11768 } 11769 unlock_user(a, arg1, 0); 11770 } 11771 return ret; 11772 #endif 11773 #ifdef TARGET_NR_arm_fadvise64_64 11774 case TARGET_NR_arm_fadvise64_64: 11775 /* arm_fadvise64_64 looks like fadvise64_64 but 11776 * with different argument order: fd, advice, offset, len 11777 * rather than the usual fd, offset, len, advice. 11778 * Note that offset and len are both 64-bit so appear as 11779 * pairs of 32-bit registers. 11780 */ 11781 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11782 target_offset64(arg5, arg6), arg2); 11783 return -host_to_target_errno(ret); 11784 #endif 11785 11786 #if TARGET_ABI_BITS == 32 11787 11788 #ifdef TARGET_NR_fadvise64_64 11789 case TARGET_NR_fadvise64_64: 11790 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11791 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11792 ret = arg2; 11793 arg2 = arg3; 11794 arg3 = arg4; 11795 arg4 = arg5; 11796 arg5 = arg6; 11797 arg6 = ret; 11798 #else 11799 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11800 if (regpairs_aligned(cpu_env, num)) { 11801 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11802 arg2 = arg3; 11803 arg3 = arg4; 11804 arg4 = arg5; 11805 arg5 = arg6; 11806 arg6 = arg7; 11807 } 11808 #endif 11809 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11810 target_offset64(arg4, arg5), arg6); 11811 return -host_to_target_errno(ret); 11812 #endif 11813 11814 #ifdef TARGET_NR_fadvise64 11815 case TARGET_NR_fadvise64: 11816 /* 5 args: fd, offset (high, low), len, advice */ 11817 if (regpairs_aligned(cpu_env, num)) { 11818 /* offset is in (3,4), len in 5 and advice in 6 */ 11819 arg2 = arg3; 11820 arg3 = arg4; 11821 arg4 = arg5; 11822 arg5 = arg6; 11823 } 11824 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11825 return -host_to_target_errno(ret); 11826 #endif 11827 11828 #else /* not a 32-bit ABI */ 11829 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11830 #ifdef TARGET_NR_fadvise64_64 11831 case TARGET_NR_fadvise64_64: 11832 #endif 11833 #ifdef TARGET_NR_fadvise64 11834 case TARGET_NR_fadvise64: 11835 #endif 11836 #ifdef TARGET_S390X 11837 switch (arg4) { 11838 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11839 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11840 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11841 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11842 default: break; 11843 } 11844 #endif 11845 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11846 #endif 11847 #endif /* end of 64-bit ABI fadvise handling */ 11848 11849 #ifdef TARGET_NR_madvise 11850 case TARGET_NR_madvise: 11851 return target_madvise(arg1, arg2, arg3); 11852 #endif 11853 #ifdef TARGET_NR_fcntl64 11854 case TARGET_NR_fcntl64: 11855 { 11856 int cmd; 11857 struct flock64 fl; 11858 from_flock64_fn *copyfrom = copy_from_user_flock64; 11859 to_flock64_fn *copyto = copy_to_user_flock64; 11860 11861 #ifdef TARGET_ARM 11862 if (!cpu_env->eabi) { 11863 copyfrom = copy_from_user_oabi_flock64; 11864 copyto = copy_to_user_oabi_flock64; 11865 } 11866 #endif 11867 11868 cmd = target_to_host_fcntl_cmd(arg2); 11869 if (cmd == -TARGET_EINVAL) { 11870 return cmd; 11871 } 11872 11873 switch(arg2) { 11874 case TARGET_F_GETLK64: 11875 ret = copyfrom(&fl, arg3); 11876 if (ret) { 11877 break; 11878 } 11879 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11880 if (ret == 0) { 11881 ret = copyto(arg3, &fl); 11882 } 11883 break; 11884 11885 case TARGET_F_SETLK64: 11886 case TARGET_F_SETLKW64: 11887 ret = copyfrom(&fl, arg3); 11888 if (ret) { 11889 break; 11890 } 11891 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11892 break; 11893 default: 11894 ret = do_fcntl(arg1, arg2, arg3); 11895 break; 11896 } 11897 return ret; 11898 } 11899 #endif 11900 #ifdef TARGET_NR_cacheflush 11901 case TARGET_NR_cacheflush: 11902 /* self-modifying code is handled automatically, so nothing needed */ 11903 return 0; 11904 #endif 11905 #ifdef TARGET_NR_getpagesize 11906 case TARGET_NR_getpagesize: 11907 return TARGET_PAGE_SIZE; 11908 #endif 11909 case TARGET_NR_gettid: 11910 return get_errno(sys_gettid()); 11911 #ifdef TARGET_NR_readahead 11912 case TARGET_NR_readahead: 11913 #if TARGET_ABI_BITS == 32 11914 if (regpairs_aligned(cpu_env, num)) { 11915 arg2 = arg3; 11916 arg3 = arg4; 11917 arg4 = arg5; 11918 } 11919 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11920 #else 11921 ret = get_errno(readahead(arg1, arg2, arg3)); 11922 #endif 11923 return ret; 11924 #endif 11925 #ifdef CONFIG_ATTR 11926 #ifdef TARGET_NR_setxattr 11927 case TARGET_NR_listxattr: 11928 case TARGET_NR_llistxattr: 11929 { 11930 void *p, *b = 0; 11931 if (arg2) { 11932 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11933 if (!b) { 11934 return -TARGET_EFAULT; 11935 } 11936 } 11937 p = lock_user_string(arg1); 11938 if (p) { 11939 if (num == TARGET_NR_listxattr) { 11940 ret = get_errno(listxattr(p, b, arg3)); 11941 } else { 11942 ret = get_errno(llistxattr(p, b, arg3)); 11943 } 11944 } else { 11945 ret = -TARGET_EFAULT; 11946 } 11947 unlock_user(p, arg1, 0); 11948 unlock_user(b, arg2, arg3); 11949 return ret; 11950 } 11951 case TARGET_NR_flistxattr: 11952 { 11953 void *b = 0; 11954 if (arg2) { 11955 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11956 if (!b) { 11957 return -TARGET_EFAULT; 11958 } 11959 } 11960 ret = get_errno(flistxattr(arg1, b, arg3)); 11961 unlock_user(b, arg2, arg3); 11962 return ret; 11963 } 11964 case TARGET_NR_setxattr: 11965 case TARGET_NR_lsetxattr: 11966 { 11967 void *p, *n, *v = 0; 11968 if (arg3) { 11969 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11970 if (!v) { 11971 return -TARGET_EFAULT; 11972 } 11973 } 11974 p = lock_user_string(arg1); 11975 n = lock_user_string(arg2); 11976 if (p && n) { 11977 if (num == TARGET_NR_setxattr) { 11978 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 11979 } else { 11980 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 11981 } 11982 } else { 11983 ret = -TARGET_EFAULT; 11984 } 11985 unlock_user(p, arg1, 0); 11986 unlock_user(n, arg2, 0); 11987 unlock_user(v, arg3, 0); 11988 } 11989 return ret; 11990 case TARGET_NR_fsetxattr: 11991 { 11992 void *n, *v = 0; 11993 if (arg3) { 11994 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11995 if (!v) { 11996 return -TARGET_EFAULT; 11997 } 11998 } 11999 n = lock_user_string(arg2); 12000 if (n) { 12001 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 12002 } else { 12003 ret = -TARGET_EFAULT; 12004 } 12005 unlock_user(n, arg2, 0); 12006 unlock_user(v, arg3, 0); 12007 } 12008 return ret; 12009 case TARGET_NR_getxattr: 12010 case TARGET_NR_lgetxattr: 12011 { 12012 void *p, *n, *v = 0; 12013 if (arg3) { 12014 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12015 if (!v) { 12016 return -TARGET_EFAULT; 12017 } 12018 } 12019 p = lock_user_string(arg1); 12020 n = lock_user_string(arg2); 12021 if (p && n) { 12022 if (num == TARGET_NR_getxattr) { 12023 ret = get_errno(getxattr(p, n, v, arg4)); 12024 } else { 12025 ret = get_errno(lgetxattr(p, n, v, arg4)); 12026 } 12027 } else { 12028 ret = -TARGET_EFAULT; 12029 } 12030 unlock_user(p, arg1, 0); 12031 unlock_user(n, arg2, 0); 12032 unlock_user(v, arg3, arg4); 12033 } 12034 return ret; 12035 case TARGET_NR_fgetxattr: 12036 { 12037 void *n, *v = 0; 12038 if (arg3) { 12039 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12040 if (!v) { 12041 return -TARGET_EFAULT; 12042 } 12043 } 12044 n = lock_user_string(arg2); 12045 if (n) { 12046 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 12047 } else { 12048 ret = -TARGET_EFAULT; 12049 } 12050 unlock_user(n, arg2, 0); 12051 unlock_user(v, arg3, arg4); 12052 } 12053 return ret; 12054 case TARGET_NR_removexattr: 12055 case TARGET_NR_lremovexattr: 12056 { 12057 void *p, *n; 12058 p = lock_user_string(arg1); 12059 n = lock_user_string(arg2); 12060 if (p && n) { 12061 if (num == TARGET_NR_removexattr) { 12062 ret = get_errno(removexattr(p, n)); 12063 } else { 12064 ret = get_errno(lremovexattr(p, n)); 12065 } 12066 } else { 12067 ret = -TARGET_EFAULT; 12068 } 12069 unlock_user(p, arg1, 0); 12070 unlock_user(n, arg2, 0); 12071 } 12072 return ret; 12073 case TARGET_NR_fremovexattr: 12074 { 12075 void *n; 12076 n = lock_user_string(arg2); 12077 if (n) { 12078 ret = get_errno(fremovexattr(arg1, n)); 12079 } else { 12080 ret = -TARGET_EFAULT; 12081 } 12082 unlock_user(n, arg2, 0); 12083 } 12084 return ret; 12085 #endif 12086 #endif /* CONFIG_ATTR */ 12087 #ifdef TARGET_NR_set_thread_area 12088 case TARGET_NR_set_thread_area: 12089 #if defined(TARGET_MIPS) 12090 cpu_env->active_tc.CP0_UserLocal = arg1; 12091 return 0; 12092 #elif defined(TARGET_CRIS) 12093 if (arg1 & 0xff) 12094 ret = -TARGET_EINVAL; 12095 else { 12096 cpu_env->pregs[PR_PID] = arg1; 12097 ret = 0; 12098 } 12099 return ret; 12100 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 12101 return do_set_thread_area(cpu_env, arg1); 12102 #elif defined(TARGET_M68K) 12103 { 12104 TaskState *ts = cpu->opaque; 12105 ts->tp_value = arg1; 12106 return 0; 12107 } 12108 #else 12109 return -TARGET_ENOSYS; 12110 #endif 12111 #endif 12112 #ifdef TARGET_NR_get_thread_area 12113 case TARGET_NR_get_thread_area: 12114 #if defined(TARGET_I386) && defined(TARGET_ABI32) 12115 return do_get_thread_area(cpu_env, arg1); 12116 #elif defined(TARGET_M68K) 12117 { 12118 TaskState *ts = cpu->opaque; 12119 return ts->tp_value; 12120 } 12121 #else 12122 return -TARGET_ENOSYS; 12123 #endif 12124 #endif 12125 #ifdef TARGET_NR_getdomainname 12126 case TARGET_NR_getdomainname: 12127 return -TARGET_ENOSYS; 12128 #endif 12129 12130 #ifdef TARGET_NR_clock_settime 12131 case TARGET_NR_clock_settime: 12132 { 12133 struct timespec ts; 12134 12135 ret = target_to_host_timespec(&ts, arg2); 12136 if (!is_error(ret)) { 12137 ret = get_errno(clock_settime(arg1, &ts)); 12138 } 12139 return ret; 12140 } 12141 #endif 12142 #ifdef TARGET_NR_clock_settime64 12143 case TARGET_NR_clock_settime64: 12144 { 12145 struct timespec ts; 12146 12147 ret = target_to_host_timespec64(&ts, arg2); 12148 if (!is_error(ret)) { 12149 ret = get_errno(clock_settime(arg1, &ts)); 12150 } 12151 return ret; 12152 } 12153 #endif 12154 #ifdef TARGET_NR_clock_gettime 12155 case TARGET_NR_clock_gettime: 12156 { 12157 struct timespec ts; 12158 ret = get_errno(clock_gettime(arg1, &ts)); 12159 if (!is_error(ret)) { 12160 ret = host_to_target_timespec(arg2, &ts); 12161 } 12162 return ret; 12163 } 12164 #endif 12165 #ifdef TARGET_NR_clock_gettime64 12166 case TARGET_NR_clock_gettime64: 12167 { 12168 struct timespec ts; 12169 ret = get_errno(clock_gettime(arg1, &ts)); 12170 if (!is_error(ret)) { 12171 ret = host_to_target_timespec64(arg2, &ts); 12172 } 12173 return ret; 12174 } 12175 #endif 12176 #ifdef TARGET_NR_clock_getres 12177 case TARGET_NR_clock_getres: 12178 { 12179 struct timespec ts; 12180 ret = get_errno(clock_getres(arg1, &ts)); 12181 if (!is_error(ret)) { 12182 host_to_target_timespec(arg2, &ts); 12183 } 12184 return ret; 12185 } 12186 #endif 12187 #ifdef TARGET_NR_clock_getres_time64 12188 case TARGET_NR_clock_getres_time64: 12189 { 12190 struct timespec ts; 12191 ret = get_errno(clock_getres(arg1, &ts)); 12192 if (!is_error(ret)) { 12193 host_to_target_timespec64(arg2, &ts); 12194 } 12195 return ret; 12196 } 12197 #endif 12198 #ifdef TARGET_NR_clock_nanosleep 12199 case TARGET_NR_clock_nanosleep: 12200 { 12201 struct timespec ts; 12202 if (target_to_host_timespec(&ts, arg3)) { 12203 return -TARGET_EFAULT; 12204 } 12205 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12206 &ts, arg4 ? &ts : NULL)); 12207 /* 12208 * if the call is interrupted by a signal handler, it fails 12209 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12210 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12211 */ 12212 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12213 host_to_target_timespec(arg4, &ts)) { 12214 return -TARGET_EFAULT; 12215 } 12216 12217 return ret; 12218 } 12219 #endif 12220 #ifdef TARGET_NR_clock_nanosleep_time64 12221 case TARGET_NR_clock_nanosleep_time64: 12222 { 12223 struct timespec ts; 12224 12225 if (target_to_host_timespec64(&ts, arg3)) { 12226 return -TARGET_EFAULT; 12227 } 12228 12229 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12230 &ts, arg4 ? &ts : NULL)); 12231 12232 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12233 host_to_target_timespec64(arg4, &ts)) { 12234 return -TARGET_EFAULT; 12235 } 12236 return ret; 12237 } 12238 #endif 12239 12240 #if defined(TARGET_NR_set_tid_address) 12241 case TARGET_NR_set_tid_address: 12242 { 12243 TaskState *ts = cpu->opaque; 12244 ts->child_tidptr = arg1; 12245 /* do not call host set_tid_address() syscall, instead return tid() */ 12246 return get_errno(sys_gettid()); 12247 } 12248 #endif 12249 12250 case TARGET_NR_tkill: 12251 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12252 12253 case TARGET_NR_tgkill: 12254 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12255 target_to_host_signal(arg3))); 12256 12257 #ifdef TARGET_NR_set_robust_list 12258 case TARGET_NR_set_robust_list: 12259 case TARGET_NR_get_robust_list: 12260 /* The ABI for supporting robust futexes has userspace pass 12261 * the kernel a pointer to a linked list which is updated by 12262 * userspace after the syscall; the list is walked by the kernel 12263 * when the thread exits. Since the linked list in QEMU guest 12264 * memory isn't a valid linked list for the host and we have 12265 * no way to reliably intercept the thread-death event, we can't 12266 * support these. Silently return ENOSYS so that guest userspace 12267 * falls back to a non-robust futex implementation (which should 12268 * be OK except in the corner case of the guest crashing while 12269 * holding a mutex that is shared with another process via 12270 * shared memory). 12271 */ 12272 return -TARGET_ENOSYS; 12273 #endif 12274 12275 #if defined(TARGET_NR_utimensat) 12276 case TARGET_NR_utimensat: 12277 { 12278 struct timespec *tsp, ts[2]; 12279 if (!arg3) { 12280 tsp = NULL; 12281 } else { 12282 if (target_to_host_timespec(ts, arg3)) { 12283 return -TARGET_EFAULT; 12284 } 12285 if (target_to_host_timespec(ts + 1, arg3 + 12286 sizeof(struct target_timespec))) { 12287 return -TARGET_EFAULT; 12288 } 12289 tsp = ts; 12290 } 12291 if (!arg2) 12292 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12293 else { 12294 if (!(p = lock_user_string(arg2))) { 12295 return -TARGET_EFAULT; 12296 } 12297 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12298 unlock_user(p, arg2, 0); 12299 } 12300 } 12301 return ret; 12302 #endif 12303 #ifdef TARGET_NR_utimensat_time64 12304 case TARGET_NR_utimensat_time64: 12305 { 12306 struct timespec *tsp, ts[2]; 12307 if (!arg3) { 12308 tsp = NULL; 12309 } else { 12310 if (target_to_host_timespec64(ts, arg3)) { 12311 return -TARGET_EFAULT; 12312 } 12313 if (target_to_host_timespec64(ts + 1, arg3 + 12314 sizeof(struct target__kernel_timespec))) { 12315 return -TARGET_EFAULT; 12316 } 12317 tsp = ts; 12318 } 12319 if (!arg2) 12320 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12321 else { 12322 p = lock_user_string(arg2); 12323 if (!p) { 12324 return -TARGET_EFAULT; 12325 } 12326 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12327 unlock_user(p, arg2, 0); 12328 } 12329 } 12330 return ret; 12331 #endif 12332 #ifdef TARGET_NR_futex 12333 case TARGET_NR_futex: 12334 return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6); 12335 #endif 12336 #ifdef TARGET_NR_futex_time64 12337 case TARGET_NR_futex_time64: 12338 return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6); 12339 #endif 12340 #ifdef CONFIG_INOTIFY 12341 #if defined(TARGET_NR_inotify_init) 12342 case TARGET_NR_inotify_init: 12343 ret = get_errno(inotify_init()); 12344 if (ret >= 0) { 12345 fd_trans_register(ret, &target_inotify_trans); 12346 } 12347 return ret; 12348 #endif 12349 #if defined(TARGET_NR_inotify_init1) && defined(CONFIG_INOTIFY1) 12350 case TARGET_NR_inotify_init1: 12351 ret = get_errno(inotify_init1(target_to_host_bitmask(arg1, 12352 fcntl_flags_tbl))); 12353 if (ret >= 0) { 12354 fd_trans_register(ret, &target_inotify_trans); 12355 } 12356 return ret; 12357 #endif 12358 #if defined(TARGET_NR_inotify_add_watch) 12359 case TARGET_NR_inotify_add_watch: 12360 p = lock_user_string(arg2); 12361 ret = get_errno(inotify_add_watch(arg1, path(p), arg3)); 12362 unlock_user(p, arg2, 0); 12363 return ret; 12364 #endif 12365 #if defined(TARGET_NR_inotify_rm_watch) 12366 case TARGET_NR_inotify_rm_watch: 12367 return get_errno(inotify_rm_watch(arg1, arg2)); 12368 #endif 12369 #endif 12370 12371 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12372 case TARGET_NR_mq_open: 12373 { 12374 struct mq_attr posix_mq_attr; 12375 struct mq_attr *pposix_mq_attr; 12376 int host_flags; 12377 12378 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12379 pposix_mq_attr = NULL; 12380 if (arg4) { 12381 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12382 return -TARGET_EFAULT; 12383 } 12384 pposix_mq_attr = &posix_mq_attr; 12385 } 12386 p = lock_user_string(arg1 - 1); 12387 if (!p) { 12388 return -TARGET_EFAULT; 12389 } 12390 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12391 unlock_user (p, arg1, 0); 12392 } 12393 return ret; 12394 12395 case TARGET_NR_mq_unlink: 12396 p = lock_user_string(arg1 - 1); 12397 if (!p) { 12398 return -TARGET_EFAULT; 12399 } 12400 ret = get_errno(mq_unlink(p)); 12401 unlock_user (p, arg1, 0); 12402 return ret; 12403 12404 #ifdef TARGET_NR_mq_timedsend 12405 case TARGET_NR_mq_timedsend: 12406 { 12407 struct timespec ts; 12408 12409 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12410 if (arg5 != 0) { 12411 if (target_to_host_timespec(&ts, arg5)) { 12412 return -TARGET_EFAULT; 12413 } 12414 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12415 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12416 return -TARGET_EFAULT; 12417 } 12418 } else { 12419 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12420 } 12421 unlock_user (p, arg2, arg3); 12422 } 12423 return ret; 12424 #endif 12425 #ifdef TARGET_NR_mq_timedsend_time64 12426 case TARGET_NR_mq_timedsend_time64: 12427 { 12428 struct timespec ts; 12429 12430 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12431 if (arg5 != 0) { 12432 if (target_to_host_timespec64(&ts, arg5)) { 12433 return -TARGET_EFAULT; 12434 } 12435 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12436 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12437 return -TARGET_EFAULT; 12438 } 12439 } else { 12440 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12441 } 12442 unlock_user(p, arg2, arg3); 12443 } 12444 return ret; 12445 #endif 12446 12447 #ifdef TARGET_NR_mq_timedreceive 12448 case TARGET_NR_mq_timedreceive: 12449 { 12450 struct timespec ts; 12451 unsigned int prio; 12452 12453 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12454 if (arg5 != 0) { 12455 if (target_to_host_timespec(&ts, arg5)) { 12456 return -TARGET_EFAULT; 12457 } 12458 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12459 &prio, &ts)); 12460 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12461 return -TARGET_EFAULT; 12462 } 12463 } else { 12464 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12465 &prio, NULL)); 12466 } 12467 unlock_user (p, arg2, arg3); 12468 if (arg4 != 0) 12469 put_user_u32(prio, arg4); 12470 } 12471 return ret; 12472 #endif 12473 #ifdef TARGET_NR_mq_timedreceive_time64 12474 case TARGET_NR_mq_timedreceive_time64: 12475 { 12476 struct timespec ts; 12477 unsigned int prio; 12478 12479 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12480 if (arg5 != 0) { 12481 if (target_to_host_timespec64(&ts, arg5)) { 12482 return -TARGET_EFAULT; 12483 } 12484 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12485 &prio, &ts)); 12486 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12487 return -TARGET_EFAULT; 12488 } 12489 } else { 12490 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12491 &prio, NULL)); 12492 } 12493 unlock_user(p, arg2, arg3); 12494 if (arg4 != 0) { 12495 put_user_u32(prio, arg4); 12496 } 12497 } 12498 return ret; 12499 #endif 12500 12501 /* Not implemented for now... */ 12502 /* case TARGET_NR_mq_notify: */ 12503 /* break; */ 12504 12505 case TARGET_NR_mq_getsetattr: 12506 { 12507 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 12508 ret = 0; 12509 if (arg2 != 0) { 12510 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 12511 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 12512 &posix_mq_attr_out)); 12513 } else if (arg3 != 0) { 12514 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 12515 } 12516 if (ret == 0 && arg3 != 0) { 12517 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 12518 } 12519 } 12520 return ret; 12521 #endif 12522 12523 #ifdef CONFIG_SPLICE 12524 #ifdef TARGET_NR_tee 12525 case TARGET_NR_tee: 12526 { 12527 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 12528 } 12529 return ret; 12530 #endif 12531 #ifdef TARGET_NR_splice 12532 case TARGET_NR_splice: 12533 { 12534 loff_t loff_in, loff_out; 12535 loff_t *ploff_in = NULL, *ploff_out = NULL; 12536 if (arg2) { 12537 if (get_user_u64(loff_in, arg2)) { 12538 return -TARGET_EFAULT; 12539 } 12540 ploff_in = &loff_in; 12541 } 12542 if (arg4) { 12543 if (get_user_u64(loff_out, arg4)) { 12544 return -TARGET_EFAULT; 12545 } 12546 ploff_out = &loff_out; 12547 } 12548 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 12549 if (arg2) { 12550 if (put_user_u64(loff_in, arg2)) { 12551 return -TARGET_EFAULT; 12552 } 12553 } 12554 if (arg4) { 12555 if (put_user_u64(loff_out, arg4)) { 12556 return -TARGET_EFAULT; 12557 } 12558 } 12559 } 12560 return ret; 12561 #endif 12562 #ifdef TARGET_NR_vmsplice 12563 case TARGET_NR_vmsplice: 12564 { 12565 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 12566 if (vec != NULL) { 12567 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 12568 unlock_iovec(vec, arg2, arg3, 0); 12569 } else { 12570 ret = -host_to_target_errno(errno); 12571 } 12572 } 12573 return ret; 12574 #endif 12575 #endif /* CONFIG_SPLICE */ 12576 #ifdef CONFIG_EVENTFD 12577 #if defined(TARGET_NR_eventfd) 12578 case TARGET_NR_eventfd: 12579 ret = get_errno(eventfd(arg1, 0)); 12580 if (ret >= 0) { 12581 fd_trans_register(ret, &target_eventfd_trans); 12582 } 12583 return ret; 12584 #endif 12585 #if defined(TARGET_NR_eventfd2) 12586 case TARGET_NR_eventfd2: 12587 { 12588 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 12589 if (arg2 & TARGET_O_NONBLOCK) { 12590 host_flags |= O_NONBLOCK; 12591 } 12592 if (arg2 & TARGET_O_CLOEXEC) { 12593 host_flags |= O_CLOEXEC; 12594 } 12595 ret = get_errno(eventfd(arg1, host_flags)); 12596 if (ret >= 0) { 12597 fd_trans_register(ret, &target_eventfd_trans); 12598 } 12599 return ret; 12600 } 12601 #endif 12602 #endif /* CONFIG_EVENTFD */ 12603 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 12604 case TARGET_NR_fallocate: 12605 #if TARGET_ABI_BITS == 32 12606 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 12607 target_offset64(arg5, arg6))); 12608 #else 12609 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 12610 #endif 12611 return ret; 12612 #endif 12613 #if defined(CONFIG_SYNC_FILE_RANGE) 12614 #if defined(TARGET_NR_sync_file_range) 12615 case TARGET_NR_sync_file_range: 12616 #if TARGET_ABI_BITS == 32 12617 #if defined(TARGET_MIPS) 12618 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12619 target_offset64(arg5, arg6), arg7)); 12620 #else 12621 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 12622 target_offset64(arg4, arg5), arg6)); 12623 #endif /* !TARGET_MIPS */ 12624 #else 12625 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 12626 #endif 12627 return ret; 12628 #endif 12629 #if defined(TARGET_NR_sync_file_range2) || \ 12630 defined(TARGET_NR_arm_sync_file_range) 12631 #if defined(TARGET_NR_sync_file_range2) 12632 case TARGET_NR_sync_file_range2: 12633 #endif 12634 #if defined(TARGET_NR_arm_sync_file_range) 12635 case TARGET_NR_arm_sync_file_range: 12636 #endif 12637 /* This is like sync_file_range but the arguments are reordered */ 12638 #if TARGET_ABI_BITS == 32 12639 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12640 target_offset64(arg5, arg6), arg2)); 12641 #else 12642 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 12643 #endif 12644 return ret; 12645 #endif 12646 #endif 12647 #if defined(TARGET_NR_signalfd4) 12648 case TARGET_NR_signalfd4: 12649 return do_signalfd4(arg1, arg2, arg4); 12650 #endif 12651 #if defined(TARGET_NR_signalfd) 12652 case TARGET_NR_signalfd: 12653 return do_signalfd4(arg1, arg2, 0); 12654 #endif 12655 #if defined(CONFIG_EPOLL) 12656 #if defined(TARGET_NR_epoll_create) 12657 case TARGET_NR_epoll_create: 12658 return get_errno(epoll_create(arg1)); 12659 #endif 12660 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12661 case TARGET_NR_epoll_create1: 12662 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 12663 #endif 12664 #if defined(TARGET_NR_epoll_ctl) 12665 case TARGET_NR_epoll_ctl: 12666 { 12667 struct epoll_event ep; 12668 struct epoll_event *epp = 0; 12669 if (arg4) { 12670 if (arg2 != EPOLL_CTL_DEL) { 12671 struct target_epoll_event *target_ep; 12672 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12673 return -TARGET_EFAULT; 12674 } 12675 ep.events = tswap32(target_ep->events); 12676 /* 12677 * The epoll_data_t union is just opaque data to the kernel, 12678 * so we transfer all 64 bits across and need not worry what 12679 * actual data type it is. 12680 */ 12681 ep.data.u64 = tswap64(target_ep->data.u64); 12682 unlock_user_struct(target_ep, arg4, 0); 12683 } 12684 /* 12685 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 12686 * non-null pointer, even though this argument is ignored. 12687 * 12688 */ 12689 epp = &ep; 12690 } 12691 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12692 } 12693 #endif 12694 12695 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12696 #if defined(TARGET_NR_epoll_wait) 12697 case TARGET_NR_epoll_wait: 12698 #endif 12699 #if defined(TARGET_NR_epoll_pwait) 12700 case TARGET_NR_epoll_pwait: 12701 #endif 12702 { 12703 struct target_epoll_event *target_ep; 12704 struct epoll_event *ep; 12705 int epfd = arg1; 12706 int maxevents = arg3; 12707 int timeout = arg4; 12708 12709 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12710 return -TARGET_EINVAL; 12711 } 12712 12713 target_ep = lock_user(VERIFY_WRITE, arg2, 12714 maxevents * sizeof(struct target_epoll_event), 1); 12715 if (!target_ep) { 12716 return -TARGET_EFAULT; 12717 } 12718 12719 ep = g_try_new(struct epoll_event, maxevents); 12720 if (!ep) { 12721 unlock_user(target_ep, arg2, 0); 12722 return -TARGET_ENOMEM; 12723 } 12724 12725 switch (num) { 12726 #if defined(TARGET_NR_epoll_pwait) 12727 case TARGET_NR_epoll_pwait: 12728 { 12729 sigset_t *set = NULL; 12730 12731 if (arg5) { 12732 ret = process_sigsuspend_mask(&set, arg5, arg6); 12733 if (ret != 0) { 12734 break; 12735 } 12736 } 12737 12738 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12739 set, SIGSET_T_SIZE)); 12740 12741 if (set) { 12742 finish_sigsuspend_mask(ret); 12743 } 12744 break; 12745 } 12746 #endif 12747 #if defined(TARGET_NR_epoll_wait) 12748 case TARGET_NR_epoll_wait: 12749 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12750 NULL, 0)); 12751 break; 12752 #endif 12753 default: 12754 ret = -TARGET_ENOSYS; 12755 } 12756 if (!is_error(ret)) { 12757 int i; 12758 for (i = 0; i < ret; i++) { 12759 target_ep[i].events = tswap32(ep[i].events); 12760 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12761 } 12762 unlock_user(target_ep, arg2, 12763 ret * sizeof(struct target_epoll_event)); 12764 } else { 12765 unlock_user(target_ep, arg2, 0); 12766 } 12767 g_free(ep); 12768 return ret; 12769 } 12770 #endif 12771 #endif 12772 #ifdef TARGET_NR_prlimit64 12773 case TARGET_NR_prlimit64: 12774 { 12775 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12776 struct target_rlimit64 *target_rnew, *target_rold; 12777 struct host_rlimit64 rnew, rold, *rnewp = 0; 12778 int resource = target_to_host_resource(arg2); 12779 12780 if (arg3 && (resource != RLIMIT_AS && 12781 resource != RLIMIT_DATA && 12782 resource != RLIMIT_STACK)) { 12783 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12784 return -TARGET_EFAULT; 12785 } 12786 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12787 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12788 unlock_user_struct(target_rnew, arg3, 0); 12789 rnewp = &rnew; 12790 } 12791 12792 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12793 if (!is_error(ret) && arg4) { 12794 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12795 return -TARGET_EFAULT; 12796 } 12797 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12798 target_rold->rlim_max = tswap64(rold.rlim_max); 12799 unlock_user_struct(target_rold, arg4, 1); 12800 } 12801 return ret; 12802 } 12803 #endif 12804 #ifdef TARGET_NR_gethostname 12805 case TARGET_NR_gethostname: 12806 { 12807 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12808 if (name) { 12809 ret = get_errno(gethostname(name, arg2)); 12810 unlock_user(name, arg1, arg2); 12811 } else { 12812 ret = -TARGET_EFAULT; 12813 } 12814 return ret; 12815 } 12816 #endif 12817 #ifdef TARGET_NR_atomic_cmpxchg_32 12818 case TARGET_NR_atomic_cmpxchg_32: 12819 { 12820 /* should use start_exclusive from main.c */ 12821 abi_ulong mem_value; 12822 if (get_user_u32(mem_value, arg6)) { 12823 target_siginfo_t info; 12824 info.si_signo = SIGSEGV; 12825 info.si_errno = 0; 12826 info.si_code = TARGET_SEGV_MAPERR; 12827 info._sifields._sigfault._addr = arg6; 12828 queue_signal(cpu_env, info.si_signo, QEMU_SI_FAULT, &info); 12829 ret = 0xdeadbeef; 12830 12831 } 12832 if (mem_value == arg2) 12833 put_user_u32(arg1, arg6); 12834 return mem_value; 12835 } 12836 #endif 12837 #ifdef TARGET_NR_atomic_barrier 12838 case TARGET_NR_atomic_barrier: 12839 /* Like the kernel implementation and the 12840 qemu arm barrier, no-op this? */ 12841 return 0; 12842 #endif 12843 12844 #ifdef TARGET_NR_timer_create 12845 case TARGET_NR_timer_create: 12846 { 12847 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12848 12849 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12850 12851 int clkid = arg1; 12852 int timer_index = next_free_host_timer(); 12853 12854 if (timer_index < 0) { 12855 ret = -TARGET_EAGAIN; 12856 } else { 12857 timer_t *phtimer = g_posix_timers + timer_index; 12858 12859 if (arg2) { 12860 phost_sevp = &host_sevp; 12861 ret = target_to_host_sigevent(phost_sevp, arg2); 12862 if (ret != 0) { 12863 free_host_timer_slot(timer_index); 12864 return ret; 12865 } 12866 } 12867 12868 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12869 if (ret) { 12870 free_host_timer_slot(timer_index); 12871 } else { 12872 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12873 timer_delete(*phtimer); 12874 free_host_timer_slot(timer_index); 12875 return -TARGET_EFAULT; 12876 } 12877 } 12878 } 12879 return ret; 12880 } 12881 #endif 12882 12883 #ifdef TARGET_NR_timer_settime 12884 case TARGET_NR_timer_settime: 12885 { 12886 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12887 * struct itimerspec * old_value */ 12888 target_timer_t timerid = get_timer_id(arg1); 12889 12890 if (timerid < 0) { 12891 ret = timerid; 12892 } else if (arg3 == 0) { 12893 ret = -TARGET_EINVAL; 12894 } else { 12895 timer_t htimer = g_posix_timers[timerid]; 12896 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12897 12898 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12899 return -TARGET_EFAULT; 12900 } 12901 ret = get_errno( 12902 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12903 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12904 return -TARGET_EFAULT; 12905 } 12906 } 12907 return ret; 12908 } 12909 #endif 12910 12911 #ifdef TARGET_NR_timer_settime64 12912 case TARGET_NR_timer_settime64: 12913 { 12914 target_timer_t timerid = get_timer_id(arg1); 12915 12916 if (timerid < 0) { 12917 ret = timerid; 12918 } else if (arg3 == 0) { 12919 ret = -TARGET_EINVAL; 12920 } else { 12921 timer_t htimer = g_posix_timers[timerid]; 12922 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12923 12924 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 12925 return -TARGET_EFAULT; 12926 } 12927 ret = get_errno( 12928 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12929 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 12930 return -TARGET_EFAULT; 12931 } 12932 } 12933 return ret; 12934 } 12935 #endif 12936 12937 #ifdef TARGET_NR_timer_gettime 12938 case TARGET_NR_timer_gettime: 12939 { 12940 /* args: timer_t timerid, struct itimerspec *curr_value */ 12941 target_timer_t timerid = get_timer_id(arg1); 12942 12943 if (timerid < 0) { 12944 ret = timerid; 12945 } else if (!arg2) { 12946 ret = -TARGET_EFAULT; 12947 } else { 12948 timer_t htimer = g_posix_timers[timerid]; 12949 struct itimerspec hspec; 12950 ret = get_errno(timer_gettime(htimer, &hspec)); 12951 12952 if (host_to_target_itimerspec(arg2, &hspec)) { 12953 ret = -TARGET_EFAULT; 12954 } 12955 } 12956 return ret; 12957 } 12958 #endif 12959 12960 #ifdef TARGET_NR_timer_gettime64 12961 case TARGET_NR_timer_gettime64: 12962 { 12963 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 12964 target_timer_t timerid = get_timer_id(arg1); 12965 12966 if (timerid < 0) { 12967 ret = timerid; 12968 } else if (!arg2) { 12969 ret = -TARGET_EFAULT; 12970 } else { 12971 timer_t htimer = g_posix_timers[timerid]; 12972 struct itimerspec hspec; 12973 ret = get_errno(timer_gettime(htimer, &hspec)); 12974 12975 if (host_to_target_itimerspec64(arg2, &hspec)) { 12976 ret = -TARGET_EFAULT; 12977 } 12978 } 12979 return ret; 12980 } 12981 #endif 12982 12983 #ifdef TARGET_NR_timer_getoverrun 12984 case TARGET_NR_timer_getoverrun: 12985 { 12986 /* args: timer_t timerid */ 12987 target_timer_t timerid = get_timer_id(arg1); 12988 12989 if (timerid < 0) { 12990 ret = timerid; 12991 } else { 12992 timer_t htimer = g_posix_timers[timerid]; 12993 ret = get_errno(timer_getoverrun(htimer)); 12994 } 12995 return ret; 12996 } 12997 #endif 12998 12999 #ifdef TARGET_NR_timer_delete 13000 case TARGET_NR_timer_delete: 13001 { 13002 /* args: timer_t timerid */ 13003 target_timer_t timerid = get_timer_id(arg1); 13004 13005 if (timerid < 0) { 13006 ret = timerid; 13007 } else { 13008 timer_t htimer = g_posix_timers[timerid]; 13009 ret = get_errno(timer_delete(htimer)); 13010 free_host_timer_slot(timerid); 13011 } 13012 return ret; 13013 } 13014 #endif 13015 13016 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 13017 case TARGET_NR_timerfd_create: 13018 return get_errno(timerfd_create(arg1, 13019 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 13020 #endif 13021 13022 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 13023 case TARGET_NR_timerfd_gettime: 13024 { 13025 struct itimerspec its_curr; 13026 13027 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13028 13029 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 13030 return -TARGET_EFAULT; 13031 } 13032 } 13033 return ret; 13034 #endif 13035 13036 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 13037 case TARGET_NR_timerfd_gettime64: 13038 { 13039 struct itimerspec its_curr; 13040 13041 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13042 13043 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 13044 return -TARGET_EFAULT; 13045 } 13046 } 13047 return ret; 13048 #endif 13049 13050 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 13051 case TARGET_NR_timerfd_settime: 13052 { 13053 struct itimerspec its_new, its_old, *p_new; 13054 13055 if (arg3) { 13056 if (target_to_host_itimerspec(&its_new, arg3)) { 13057 return -TARGET_EFAULT; 13058 } 13059 p_new = &its_new; 13060 } else { 13061 p_new = NULL; 13062 } 13063 13064 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13065 13066 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 13067 return -TARGET_EFAULT; 13068 } 13069 } 13070 return ret; 13071 #endif 13072 13073 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 13074 case TARGET_NR_timerfd_settime64: 13075 { 13076 struct itimerspec its_new, its_old, *p_new; 13077 13078 if (arg3) { 13079 if (target_to_host_itimerspec64(&its_new, arg3)) { 13080 return -TARGET_EFAULT; 13081 } 13082 p_new = &its_new; 13083 } else { 13084 p_new = NULL; 13085 } 13086 13087 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13088 13089 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 13090 return -TARGET_EFAULT; 13091 } 13092 } 13093 return ret; 13094 #endif 13095 13096 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 13097 case TARGET_NR_ioprio_get: 13098 return get_errno(ioprio_get(arg1, arg2)); 13099 #endif 13100 13101 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 13102 case TARGET_NR_ioprio_set: 13103 return get_errno(ioprio_set(arg1, arg2, arg3)); 13104 #endif 13105 13106 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 13107 case TARGET_NR_setns: 13108 return get_errno(setns(arg1, arg2)); 13109 #endif 13110 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 13111 case TARGET_NR_unshare: 13112 return get_errno(unshare(arg1)); 13113 #endif 13114 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 13115 case TARGET_NR_kcmp: 13116 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 13117 #endif 13118 #ifdef TARGET_NR_swapcontext 13119 case TARGET_NR_swapcontext: 13120 /* PowerPC specific. */ 13121 return do_swapcontext(cpu_env, arg1, arg2, arg3); 13122 #endif 13123 #ifdef TARGET_NR_memfd_create 13124 case TARGET_NR_memfd_create: 13125 p = lock_user_string(arg1); 13126 if (!p) { 13127 return -TARGET_EFAULT; 13128 } 13129 ret = get_errno(memfd_create(p, arg2)); 13130 fd_trans_unregister(ret); 13131 unlock_user(p, arg1, 0); 13132 return ret; 13133 #endif 13134 #if defined TARGET_NR_membarrier && defined __NR_membarrier 13135 case TARGET_NR_membarrier: 13136 return get_errno(membarrier(arg1, arg2)); 13137 #endif 13138 13139 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 13140 case TARGET_NR_copy_file_range: 13141 { 13142 loff_t inoff, outoff; 13143 loff_t *pinoff = NULL, *poutoff = NULL; 13144 13145 if (arg2) { 13146 if (get_user_u64(inoff, arg2)) { 13147 return -TARGET_EFAULT; 13148 } 13149 pinoff = &inoff; 13150 } 13151 if (arg4) { 13152 if (get_user_u64(outoff, arg4)) { 13153 return -TARGET_EFAULT; 13154 } 13155 poutoff = &outoff; 13156 } 13157 /* Do not sign-extend the count parameter. */ 13158 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 13159 (abi_ulong)arg5, arg6)); 13160 if (!is_error(ret) && ret > 0) { 13161 if (arg2) { 13162 if (put_user_u64(inoff, arg2)) { 13163 return -TARGET_EFAULT; 13164 } 13165 } 13166 if (arg4) { 13167 if (put_user_u64(outoff, arg4)) { 13168 return -TARGET_EFAULT; 13169 } 13170 } 13171 } 13172 } 13173 return ret; 13174 #endif 13175 13176 #if defined(TARGET_NR_pivot_root) 13177 case TARGET_NR_pivot_root: 13178 { 13179 void *p2; 13180 p = lock_user_string(arg1); /* new_root */ 13181 p2 = lock_user_string(arg2); /* put_old */ 13182 if (!p || !p2) { 13183 ret = -TARGET_EFAULT; 13184 } else { 13185 ret = get_errno(pivot_root(p, p2)); 13186 } 13187 unlock_user(p2, arg2, 0); 13188 unlock_user(p, arg1, 0); 13189 } 13190 return ret; 13191 #endif 13192 13193 default: 13194 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 13195 return -TARGET_ENOSYS; 13196 } 13197 return ret; 13198 } 13199 13200 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1, 13201 abi_long arg2, abi_long arg3, abi_long arg4, 13202 abi_long arg5, abi_long arg6, abi_long arg7, 13203 abi_long arg8) 13204 { 13205 CPUState *cpu = env_cpu(cpu_env); 13206 abi_long ret; 13207 13208 #ifdef DEBUG_ERESTARTSYS 13209 /* Debug-only code for exercising the syscall-restart code paths 13210 * in the per-architecture cpu main loops: restart every syscall 13211 * the guest makes once before letting it through. 13212 */ 13213 { 13214 static bool flag; 13215 flag = !flag; 13216 if (flag) { 13217 return -QEMU_ERESTARTSYS; 13218 } 13219 } 13220 #endif 13221 13222 record_syscall_start(cpu, num, arg1, 13223 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13224 13225 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13226 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13227 } 13228 13229 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13230 arg5, arg6, arg7, arg8); 13231 13232 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13233 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13234 arg3, arg4, arg5, arg6); 13235 } 13236 13237 record_syscall_return(cpu, num, ret); 13238 return ret; 13239 } 13240