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_WAIT_REQUEUE_PI: 7792 val = tswap32(val); 7793 haddr2 = g2h(cpu, uaddr2); 7794 break; 7795 case FUTEX_LOCK_PI: 7796 case FUTEX_LOCK_PI2: 7797 break; 7798 case FUTEX_WAKE: 7799 case FUTEX_WAKE_BITSET: 7800 case FUTEX_TRYLOCK_PI: 7801 case FUTEX_UNLOCK_PI: 7802 timeout = 0; 7803 break; 7804 case FUTEX_FD: 7805 val = target_to_host_signal(val); 7806 timeout = 0; 7807 break; 7808 case FUTEX_CMP_REQUEUE: 7809 case FUTEX_CMP_REQUEUE_PI: 7810 val3 = tswap32(val3); 7811 /* fall through */ 7812 case FUTEX_REQUEUE: 7813 case FUTEX_WAKE_OP: 7814 /* 7815 * For these, the 4th argument is not TIMEOUT, but VAL2. 7816 * But the prototype of do_safe_futex takes a pointer, so 7817 * insert casts to satisfy the compiler. We do not need 7818 * to tswap VAL2 since it's not compared to guest memory. 7819 */ 7820 pts = (struct timespec *)(uintptr_t)timeout; 7821 timeout = 0; 7822 haddr2 = g2h(cpu, uaddr2); 7823 break; 7824 default: 7825 return -TARGET_ENOSYS; 7826 } 7827 if (timeout) { 7828 pts = &ts; 7829 if (time64 7830 ? target_to_host_timespec64(pts, timeout) 7831 : target_to_host_timespec(pts, timeout)) { 7832 return -TARGET_EFAULT; 7833 } 7834 } 7835 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3); 7836 } 7837 #endif 7838 7839 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7840 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7841 abi_long handle, abi_long mount_id, 7842 abi_long flags) 7843 { 7844 struct file_handle *target_fh; 7845 struct file_handle *fh; 7846 int mid = 0; 7847 abi_long ret; 7848 char *name; 7849 unsigned int size, total_size; 7850 7851 if (get_user_s32(size, handle)) { 7852 return -TARGET_EFAULT; 7853 } 7854 7855 name = lock_user_string(pathname); 7856 if (!name) { 7857 return -TARGET_EFAULT; 7858 } 7859 7860 total_size = sizeof(struct file_handle) + size; 7861 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7862 if (!target_fh) { 7863 unlock_user(name, pathname, 0); 7864 return -TARGET_EFAULT; 7865 } 7866 7867 fh = g_malloc0(total_size); 7868 fh->handle_bytes = size; 7869 7870 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7871 unlock_user(name, pathname, 0); 7872 7873 /* man name_to_handle_at(2): 7874 * Other than the use of the handle_bytes field, the caller should treat 7875 * the file_handle structure as an opaque data type 7876 */ 7877 7878 memcpy(target_fh, fh, total_size); 7879 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7880 target_fh->handle_type = tswap32(fh->handle_type); 7881 g_free(fh); 7882 unlock_user(target_fh, handle, total_size); 7883 7884 if (put_user_s32(mid, mount_id)) { 7885 return -TARGET_EFAULT; 7886 } 7887 7888 return ret; 7889 7890 } 7891 #endif 7892 7893 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7894 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7895 abi_long flags) 7896 { 7897 struct file_handle *target_fh; 7898 struct file_handle *fh; 7899 unsigned int size, total_size; 7900 abi_long ret; 7901 7902 if (get_user_s32(size, handle)) { 7903 return -TARGET_EFAULT; 7904 } 7905 7906 total_size = sizeof(struct file_handle) + size; 7907 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7908 if (!target_fh) { 7909 return -TARGET_EFAULT; 7910 } 7911 7912 fh = g_memdup(target_fh, total_size); 7913 fh->handle_bytes = size; 7914 fh->handle_type = tswap32(target_fh->handle_type); 7915 7916 ret = get_errno(open_by_handle_at(mount_fd, fh, 7917 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7918 7919 g_free(fh); 7920 7921 unlock_user(target_fh, handle, total_size); 7922 7923 return ret; 7924 } 7925 #endif 7926 7927 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7928 7929 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7930 { 7931 int host_flags; 7932 target_sigset_t *target_mask; 7933 sigset_t host_mask; 7934 abi_long ret; 7935 7936 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 7937 return -TARGET_EINVAL; 7938 } 7939 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7940 return -TARGET_EFAULT; 7941 } 7942 7943 target_to_host_sigset(&host_mask, target_mask); 7944 7945 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7946 7947 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7948 if (ret >= 0) { 7949 fd_trans_register(ret, &target_signalfd_trans); 7950 } 7951 7952 unlock_user_struct(target_mask, mask, 0); 7953 7954 return ret; 7955 } 7956 #endif 7957 7958 /* Map host to target signal numbers for the wait family of syscalls. 7959 Assume all other status bits are the same. */ 7960 int host_to_target_waitstatus(int status) 7961 { 7962 if (WIFSIGNALED(status)) { 7963 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7964 } 7965 if (WIFSTOPPED(status)) { 7966 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7967 | (status & 0xff); 7968 } 7969 return status; 7970 } 7971 7972 static int open_self_cmdline(CPUArchState *cpu_env, int fd) 7973 { 7974 CPUState *cpu = env_cpu(cpu_env); 7975 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7976 int i; 7977 7978 for (i = 0; i < bprm->argc; i++) { 7979 size_t len = strlen(bprm->argv[i]) + 1; 7980 7981 if (write(fd, bprm->argv[i], len) != len) { 7982 return -1; 7983 } 7984 } 7985 7986 return 0; 7987 } 7988 7989 static int open_self_maps(CPUArchState *cpu_env, int fd) 7990 { 7991 CPUState *cpu = env_cpu(cpu_env); 7992 TaskState *ts = cpu->opaque; 7993 GSList *map_info = read_self_maps(); 7994 GSList *s; 7995 int count; 7996 7997 for (s = map_info; s; s = g_slist_next(s)) { 7998 MapInfo *e = (MapInfo *) s->data; 7999 8000 if (h2g_valid(e->start)) { 8001 unsigned long min = e->start; 8002 unsigned long max = e->end; 8003 int flags = page_get_flags(h2g(min)); 8004 const char *path; 8005 8006 max = h2g_valid(max - 1) ? 8007 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; 8008 8009 if (page_check_range(h2g(min), max - min, flags) == -1) { 8010 continue; 8011 } 8012 8013 #ifdef TARGET_HPPA 8014 if (h2g(max) == ts->info->stack_limit) { 8015 #else 8016 if (h2g(min) == ts->info->stack_limit) { 8017 #endif 8018 path = "[stack]"; 8019 } else { 8020 path = e->path; 8021 } 8022 8023 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 8024 " %c%c%c%c %08" PRIx64 " %s %"PRId64, 8025 h2g(min), h2g(max - 1) + 1, 8026 (flags & PAGE_READ) ? 'r' : '-', 8027 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 8028 (flags & PAGE_EXEC) ? 'x' : '-', 8029 e->is_priv ? 'p' : 's', 8030 (uint64_t) e->offset, e->dev, e->inode); 8031 if (path) { 8032 dprintf(fd, "%*s%s\n", 73 - count, "", path); 8033 } else { 8034 dprintf(fd, "\n"); 8035 } 8036 } 8037 } 8038 8039 free_self_maps(map_info); 8040 8041 #ifdef TARGET_VSYSCALL_PAGE 8042 /* 8043 * We only support execution from the vsyscall page. 8044 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 8045 */ 8046 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 8047 " --xp 00000000 00:00 0", 8048 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 8049 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]"); 8050 #endif 8051 8052 return 0; 8053 } 8054 8055 static int open_self_stat(CPUArchState *cpu_env, int fd) 8056 { 8057 CPUState *cpu = env_cpu(cpu_env); 8058 TaskState *ts = cpu->opaque; 8059 g_autoptr(GString) buf = g_string_new(NULL); 8060 int i; 8061 8062 for (i = 0; i < 44; i++) { 8063 if (i == 0) { 8064 /* pid */ 8065 g_string_printf(buf, FMT_pid " ", getpid()); 8066 } else if (i == 1) { 8067 /* app name */ 8068 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 8069 bin = bin ? bin + 1 : ts->bprm->argv[0]; 8070 g_string_printf(buf, "(%.15s) ", bin); 8071 } else if (i == 3) { 8072 /* ppid */ 8073 g_string_printf(buf, FMT_pid " ", getppid()); 8074 } else if (i == 21) { 8075 /* starttime */ 8076 g_string_printf(buf, "%" PRIu64 " ", ts->start_boottime); 8077 } else if (i == 27) { 8078 /* stack bottom */ 8079 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 8080 } else { 8081 /* for the rest, there is MasterCard */ 8082 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 8083 } 8084 8085 if (write(fd, buf->str, buf->len) != buf->len) { 8086 return -1; 8087 } 8088 } 8089 8090 return 0; 8091 } 8092 8093 static int open_self_auxv(CPUArchState *cpu_env, int fd) 8094 { 8095 CPUState *cpu = env_cpu(cpu_env); 8096 TaskState *ts = cpu->opaque; 8097 abi_ulong auxv = ts->info->saved_auxv; 8098 abi_ulong len = ts->info->auxv_len; 8099 char *ptr; 8100 8101 /* 8102 * Auxiliary vector is stored in target process stack. 8103 * read in whole auxv vector and copy it to file 8104 */ 8105 ptr = lock_user(VERIFY_READ, auxv, len, 0); 8106 if (ptr != NULL) { 8107 while (len > 0) { 8108 ssize_t r; 8109 r = write(fd, ptr, len); 8110 if (r <= 0) { 8111 break; 8112 } 8113 len -= r; 8114 ptr += r; 8115 } 8116 lseek(fd, 0, SEEK_SET); 8117 unlock_user(ptr, auxv, len); 8118 } 8119 8120 return 0; 8121 } 8122 8123 static int is_proc_myself(const char *filename, const char *entry) 8124 { 8125 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 8126 filename += strlen("/proc/"); 8127 if (!strncmp(filename, "self/", strlen("self/"))) { 8128 filename += strlen("self/"); 8129 } else if (*filename >= '1' && *filename <= '9') { 8130 char myself[80]; 8131 snprintf(myself, sizeof(myself), "%d/", getpid()); 8132 if (!strncmp(filename, myself, strlen(myself))) { 8133 filename += strlen(myself); 8134 } else { 8135 return 0; 8136 } 8137 } else { 8138 return 0; 8139 } 8140 if (!strcmp(filename, entry)) { 8141 return 1; 8142 } 8143 } 8144 return 0; 8145 } 8146 8147 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \ 8148 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) 8149 static int is_proc(const char *filename, const char *entry) 8150 { 8151 return strcmp(filename, entry) == 0; 8152 } 8153 #endif 8154 8155 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8156 static int open_net_route(CPUArchState *cpu_env, int fd) 8157 { 8158 FILE *fp; 8159 char *line = NULL; 8160 size_t len = 0; 8161 ssize_t read; 8162 8163 fp = fopen("/proc/net/route", "r"); 8164 if (fp == NULL) { 8165 return -1; 8166 } 8167 8168 /* read header */ 8169 8170 read = getline(&line, &len, fp); 8171 dprintf(fd, "%s", line); 8172 8173 /* read routes */ 8174 8175 while ((read = getline(&line, &len, fp)) != -1) { 8176 char iface[16]; 8177 uint32_t dest, gw, mask; 8178 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8179 int fields; 8180 8181 fields = sscanf(line, 8182 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8183 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8184 &mask, &mtu, &window, &irtt); 8185 if (fields != 11) { 8186 continue; 8187 } 8188 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8189 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8190 metric, tswap32(mask), mtu, window, irtt); 8191 } 8192 8193 free(line); 8194 fclose(fp); 8195 8196 return 0; 8197 } 8198 #endif 8199 8200 #if defined(TARGET_SPARC) 8201 static int open_cpuinfo(CPUArchState *cpu_env, int fd) 8202 { 8203 dprintf(fd, "type\t\t: sun4u\n"); 8204 return 0; 8205 } 8206 #endif 8207 8208 #if defined(TARGET_HPPA) 8209 static int open_cpuinfo(CPUArchState *cpu_env, int fd) 8210 { 8211 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n"); 8212 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n"); 8213 dprintf(fd, "capabilities\t: os32\n"); 8214 dprintf(fd, "model\t\t: 9000/778/B160L\n"); 8215 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n"); 8216 return 0; 8217 } 8218 #endif 8219 8220 #if defined(TARGET_M68K) 8221 static int open_hardware(CPUArchState *cpu_env, int fd) 8222 { 8223 dprintf(fd, "Model:\t\tqemu-m68k\n"); 8224 return 0; 8225 } 8226 #endif 8227 8228 static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 8229 { 8230 struct fake_open { 8231 const char *filename; 8232 int (*fill)(CPUArchState *cpu_env, int fd); 8233 int (*cmp)(const char *s1, const char *s2); 8234 }; 8235 const struct fake_open *fake_open; 8236 static const struct fake_open fakes[] = { 8237 { "maps", open_self_maps, is_proc_myself }, 8238 { "stat", open_self_stat, is_proc_myself }, 8239 { "auxv", open_self_auxv, is_proc_myself }, 8240 { "cmdline", open_self_cmdline, is_proc_myself }, 8241 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8242 { "/proc/net/route", open_net_route, is_proc }, 8243 #endif 8244 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) 8245 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8246 #endif 8247 #if defined(TARGET_M68K) 8248 { "/proc/hardware", open_hardware, is_proc }, 8249 #endif 8250 { NULL, NULL, NULL } 8251 }; 8252 8253 if (is_proc_myself(pathname, "exe")) { 8254 return safe_openat(dirfd, exec_path, flags, mode); 8255 } 8256 8257 for (fake_open = fakes; fake_open->filename; fake_open++) { 8258 if (fake_open->cmp(pathname, fake_open->filename)) { 8259 break; 8260 } 8261 } 8262 8263 if (fake_open->filename) { 8264 const char *tmpdir; 8265 char filename[PATH_MAX]; 8266 int fd, r; 8267 8268 fd = memfd_create("qemu-open", 0); 8269 if (fd < 0) { 8270 if (errno != ENOSYS) { 8271 return fd; 8272 } 8273 /* create temporary file to map stat to */ 8274 tmpdir = getenv("TMPDIR"); 8275 if (!tmpdir) 8276 tmpdir = "/tmp"; 8277 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8278 fd = mkstemp(filename); 8279 if (fd < 0) { 8280 return fd; 8281 } 8282 unlink(filename); 8283 } 8284 8285 if ((r = fake_open->fill(cpu_env, fd))) { 8286 int e = errno; 8287 close(fd); 8288 errno = e; 8289 return r; 8290 } 8291 lseek(fd, 0, SEEK_SET); 8292 8293 return fd; 8294 } 8295 8296 return safe_openat(dirfd, path(pathname), flags, mode); 8297 } 8298 8299 #define TIMER_MAGIC 0x0caf0000 8300 #define TIMER_MAGIC_MASK 0xffff0000 8301 8302 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8303 static target_timer_t get_timer_id(abi_long arg) 8304 { 8305 target_timer_t timerid = arg; 8306 8307 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8308 return -TARGET_EINVAL; 8309 } 8310 8311 timerid &= 0xffff; 8312 8313 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8314 return -TARGET_EINVAL; 8315 } 8316 8317 return timerid; 8318 } 8319 8320 static int target_to_host_cpu_mask(unsigned long *host_mask, 8321 size_t host_size, 8322 abi_ulong target_addr, 8323 size_t target_size) 8324 { 8325 unsigned target_bits = sizeof(abi_ulong) * 8; 8326 unsigned host_bits = sizeof(*host_mask) * 8; 8327 abi_ulong *target_mask; 8328 unsigned i, j; 8329 8330 assert(host_size >= target_size); 8331 8332 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8333 if (!target_mask) { 8334 return -TARGET_EFAULT; 8335 } 8336 memset(host_mask, 0, host_size); 8337 8338 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8339 unsigned bit = i * target_bits; 8340 abi_ulong val; 8341 8342 __get_user(val, &target_mask[i]); 8343 for (j = 0; j < target_bits; j++, bit++) { 8344 if (val & (1UL << j)) { 8345 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8346 } 8347 } 8348 } 8349 8350 unlock_user(target_mask, target_addr, 0); 8351 return 0; 8352 } 8353 8354 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8355 size_t host_size, 8356 abi_ulong target_addr, 8357 size_t target_size) 8358 { 8359 unsigned target_bits = sizeof(abi_ulong) * 8; 8360 unsigned host_bits = sizeof(*host_mask) * 8; 8361 abi_ulong *target_mask; 8362 unsigned i, j; 8363 8364 assert(host_size >= target_size); 8365 8366 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8367 if (!target_mask) { 8368 return -TARGET_EFAULT; 8369 } 8370 8371 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8372 unsigned bit = i * target_bits; 8373 abi_ulong val = 0; 8374 8375 for (j = 0; j < target_bits; j++, bit++) { 8376 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8377 val |= 1UL << j; 8378 } 8379 } 8380 __put_user(val, &target_mask[i]); 8381 } 8382 8383 unlock_user(target_mask, target_addr, target_size); 8384 return 0; 8385 } 8386 8387 #ifdef TARGET_NR_getdents 8388 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count) 8389 { 8390 g_autofree void *hdirp = NULL; 8391 void *tdirp; 8392 int hlen, hoff, toff; 8393 int hreclen, treclen; 8394 off64_t prev_diroff = 0; 8395 8396 hdirp = g_try_malloc(count); 8397 if (!hdirp) { 8398 return -TARGET_ENOMEM; 8399 } 8400 8401 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8402 hlen = sys_getdents(dirfd, hdirp, count); 8403 #else 8404 hlen = sys_getdents64(dirfd, hdirp, count); 8405 #endif 8406 8407 hlen = get_errno(hlen); 8408 if (is_error(hlen)) { 8409 return hlen; 8410 } 8411 8412 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8413 if (!tdirp) { 8414 return -TARGET_EFAULT; 8415 } 8416 8417 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8418 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8419 struct linux_dirent *hde = hdirp + hoff; 8420 #else 8421 struct linux_dirent64 *hde = hdirp + hoff; 8422 #endif 8423 struct target_dirent *tde = tdirp + toff; 8424 int namelen; 8425 uint8_t type; 8426 8427 namelen = strlen(hde->d_name); 8428 hreclen = hde->d_reclen; 8429 treclen = offsetof(struct target_dirent, d_name) + namelen + 2; 8430 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent)); 8431 8432 if (toff + treclen > count) { 8433 /* 8434 * If the host struct is smaller than the target struct, or 8435 * requires less alignment and thus packs into less space, 8436 * then the host can return more entries than we can pass 8437 * on to the guest. 8438 */ 8439 if (toff == 0) { 8440 toff = -TARGET_EINVAL; /* result buffer is too small */ 8441 break; 8442 } 8443 /* 8444 * Return what we have, resetting the file pointer to the 8445 * location of the first record not returned. 8446 */ 8447 lseek64(dirfd, prev_diroff, SEEK_SET); 8448 break; 8449 } 8450 8451 prev_diroff = hde->d_off; 8452 tde->d_ino = tswapal(hde->d_ino); 8453 tde->d_off = tswapal(hde->d_off); 8454 tde->d_reclen = tswap16(treclen); 8455 memcpy(tde->d_name, hde->d_name, namelen + 1); 8456 8457 /* 8458 * The getdents type is in what was formerly a padding byte at the 8459 * end of the structure. 8460 */ 8461 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8462 type = *((uint8_t *)hde + hreclen - 1); 8463 #else 8464 type = hde->d_type; 8465 #endif 8466 *((uint8_t *)tde + treclen - 1) = type; 8467 } 8468 8469 unlock_user(tdirp, arg2, toff); 8470 return toff; 8471 } 8472 #endif /* TARGET_NR_getdents */ 8473 8474 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 8475 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count) 8476 { 8477 g_autofree void *hdirp = NULL; 8478 void *tdirp; 8479 int hlen, hoff, toff; 8480 int hreclen, treclen; 8481 off64_t prev_diroff = 0; 8482 8483 hdirp = g_try_malloc(count); 8484 if (!hdirp) { 8485 return -TARGET_ENOMEM; 8486 } 8487 8488 hlen = get_errno(sys_getdents64(dirfd, hdirp, count)); 8489 if (is_error(hlen)) { 8490 return hlen; 8491 } 8492 8493 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8494 if (!tdirp) { 8495 return -TARGET_EFAULT; 8496 } 8497 8498 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8499 struct linux_dirent64 *hde = hdirp + hoff; 8500 struct target_dirent64 *tde = tdirp + toff; 8501 int namelen; 8502 8503 namelen = strlen(hde->d_name) + 1; 8504 hreclen = hde->d_reclen; 8505 treclen = offsetof(struct target_dirent64, d_name) + namelen; 8506 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64)); 8507 8508 if (toff + treclen > count) { 8509 /* 8510 * If the host struct is smaller than the target struct, or 8511 * requires less alignment and thus packs into less space, 8512 * then the host can return more entries than we can pass 8513 * on to the guest. 8514 */ 8515 if (toff == 0) { 8516 toff = -TARGET_EINVAL; /* result buffer is too small */ 8517 break; 8518 } 8519 /* 8520 * Return what we have, resetting the file pointer to the 8521 * location of the first record not returned. 8522 */ 8523 lseek64(dirfd, prev_diroff, SEEK_SET); 8524 break; 8525 } 8526 8527 prev_diroff = hde->d_off; 8528 tde->d_ino = tswap64(hde->d_ino); 8529 tde->d_off = tswap64(hde->d_off); 8530 tde->d_reclen = tswap16(treclen); 8531 tde->d_type = hde->d_type; 8532 memcpy(tde->d_name, hde->d_name, namelen); 8533 } 8534 8535 unlock_user(tdirp, arg2, toff); 8536 return toff; 8537 } 8538 #endif /* TARGET_NR_getdents64 */ 8539 8540 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root) 8541 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old) 8542 #endif 8543 8544 /* This is an internal helper for do_syscall so that it is easier 8545 * to have a single return point, so that actions, such as logging 8546 * of syscall results, can be performed. 8547 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 8548 */ 8549 static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, 8550 abi_long arg2, abi_long arg3, abi_long arg4, 8551 abi_long arg5, abi_long arg6, abi_long arg7, 8552 abi_long arg8) 8553 { 8554 CPUState *cpu = env_cpu(cpu_env); 8555 abi_long ret; 8556 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 8557 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 8558 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 8559 || defined(TARGET_NR_statx) 8560 struct stat st; 8561 #endif 8562 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 8563 || defined(TARGET_NR_fstatfs) 8564 struct statfs stfs; 8565 #endif 8566 void *p; 8567 8568 switch(num) { 8569 case TARGET_NR_exit: 8570 /* In old applications this may be used to implement _exit(2). 8571 However in threaded applications it is used for thread termination, 8572 and _exit_group is used for application termination. 8573 Do thread termination if we have more then one thread. */ 8574 8575 if (block_signals()) { 8576 return -QEMU_ERESTARTSYS; 8577 } 8578 8579 pthread_mutex_lock(&clone_lock); 8580 8581 if (CPU_NEXT(first_cpu)) { 8582 TaskState *ts = cpu->opaque; 8583 8584 object_property_set_bool(OBJECT(cpu), "realized", false, NULL); 8585 object_unref(OBJECT(cpu)); 8586 /* 8587 * At this point the CPU should be unrealized and removed 8588 * from cpu lists. We can clean-up the rest of the thread 8589 * data without the lock held. 8590 */ 8591 8592 pthread_mutex_unlock(&clone_lock); 8593 8594 if (ts->child_tidptr) { 8595 put_user_u32(0, ts->child_tidptr); 8596 do_sys_futex(g2h(cpu, ts->child_tidptr), 8597 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 8598 } 8599 thread_cpu = NULL; 8600 g_free(ts); 8601 rcu_unregister_thread(); 8602 pthread_exit(NULL); 8603 } 8604 8605 pthread_mutex_unlock(&clone_lock); 8606 preexit_cleanup(cpu_env, arg1); 8607 _exit(arg1); 8608 return 0; /* avoid warning */ 8609 case TARGET_NR_read: 8610 if (arg2 == 0 && arg3 == 0) { 8611 return get_errno(safe_read(arg1, 0, 0)); 8612 } else { 8613 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8614 return -TARGET_EFAULT; 8615 ret = get_errno(safe_read(arg1, p, arg3)); 8616 if (ret >= 0 && 8617 fd_trans_host_to_target_data(arg1)) { 8618 ret = fd_trans_host_to_target_data(arg1)(p, ret); 8619 } 8620 unlock_user(p, arg2, ret); 8621 } 8622 return ret; 8623 case TARGET_NR_write: 8624 if (arg2 == 0 && arg3 == 0) { 8625 return get_errno(safe_write(arg1, 0, 0)); 8626 } 8627 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8628 return -TARGET_EFAULT; 8629 if (fd_trans_target_to_host_data(arg1)) { 8630 void *copy = g_malloc(arg3); 8631 memcpy(copy, p, arg3); 8632 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 8633 if (ret >= 0) { 8634 ret = get_errno(safe_write(arg1, copy, ret)); 8635 } 8636 g_free(copy); 8637 } else { 8638 ret = get_errno(safe_write(arg1, p, arg3)); 8639 } 8640 unlock_user(p, arg2, 0); 8641 return ret; 8642 8643 #ifdef TARGET_NR_open 8644 case TARGET_NR_open: 8645 if (!(p = lock_user_string(arg1))) 8646 return -TARGET_EFAULT; 8647 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 8648 target_to_host_bitmask(arg2, fcntl_flags_tbl), 8649 arg3)); 8650 fd_trans_unregister(ret); 8651 unlock_user(p, arg1, 0); 8652 return ret; 8653 #endif 8654 case TARGET_NR_openat: 8655 if (!(p = lock_user_string(arg2))) 8656 return -TARGET_EFAULT; 8657 ret = get_errno(do_openat(cpu_env, arg1, p, 8658 target_to_host_bitmask(arg3, fcntl_flags_tbl), 8659 arg4)); 8660 fd_trans_unregister(ret); 8661 unlock_user(p, arg2, 0); 8662 return ret; 8663 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8664 case TARGET_NR_name_to_handle_at: 8665 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 8666 return ret; 8667 #endif 8668 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8669 case TARGET_NR_open_by_handle_at: 8670 ret = do_open_by_handle_at(arg1, arg2, arg3); 8671 fd_trans_unregister(ret); 8672 return ret; 8673 #endif 8674 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 8675 case TARGET_NR_pidfd_open: 8676 return get_errno(pidfd_open(arg1, arg2)); 8677 #endif 8678 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 8679 case TARGET_NR_pidfd_send_signal: 8680 { 8681 siginfo_t uinfo, *puinfo; 8682 8683 if (arg3) { 8684 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 8685 if (!p) { 8686 return -TARGET_EFAULT; 8687 } 8688 target_to_host_siginfo(&uinfo, p); 8689 unlock_user(p, arg3, 0); 8690 puinfo = &uinfo; 8691 } else { 8692 puinfo = NULL; 8693 } 8694 ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2), 8695 puinfo, arg4)); 8696 } 8697 return ret; 8698 #endif 8699 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 8700 case TARGET_NR_pidfd_getfd: 8701 return get_errno(pidfd_getfd(arg1, arg2, arg3)); 8702 #endif 8703 case TARGET_NR_close: 8704 fd_trans_unregister(arg1); 8705 return get_errno(close(arg1)); 8706 8707 case TARGET_NR_brk: 8708 return do_brk(arg1); 8709 #ifdef TARGET_NR_fork 8710 case TARGET_NR_fork: 8711 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 8712 #endif 8713 #ifdef TARGET_NR_waitpid 8714 case TARGET_NR_waitpid: 8715 { 8716 int status; 8717 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 8718 if (!is_error(ret) && arg2 && ret 8719 && put_user_s32(host_to_target_waitstatus(status), arg2)) 8720 return -TARGET_EFAULT; 8721 } 8722 return ret; 8723 #endif 8724 #ifdef TARGET_NR_waitid 8725 case TARGET_NR_waitid: 8726 { 8727 siginfo_t info; 8728 info.si_pid = 0; 8729 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 8730 if (!is_error(ret) && arg3 && info.si_pid != 0) { 8731 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 8732 return -TARGET_EFAULT; 8733 host_to_target_siginfo(p, &info); 8734 unlock_user(p, arg3, sizeof(target_siginfo_t)); 8735 } 8736 } 8737 return ret; 8738 #endif 8739 #ifdef TARGET_NR_creat /* not on alpha */ 8740 case TARGET_NR_creat: 8741 if (!(p = lock_user_string(arg1))) 8742 return -TARGET_EFAULT; 8743 ret = get_errno(creat(p, arg2)); 8744 fd_trans_unregister(ret); 8745 unlock_user(p, arg1, 0); 8746 return ret; 8747 #endif 8748 #ifdef TARGET_NR_link 8749 case TARGET_NR_link: 8750 { 8751 void * p2; 8752 p = lock_user_string(arg1); 8753 p2 = lock_user_string(arg2); 8754 if (!p || !p2) 8755 ret = -TARGET_EFAULT; 8756 else 8757 ret = get_errno(link(p, p2)); 8758 unlock_user(p2, arg2, 0); 8759 unlock_user(p, arg1, 0); 8760 } 8761 return ret; 8762 #endif 8763 #if defined(TARGET_NR_linkat) 8764 case TARGET_NR_linkat: 8765 { 8766 void * p2 = NULL; 8767 if (!arg2 || !arg4) 8768 return -TARGET_EFAULT; 8769 p = lock_user_string(arg2); 8770 p2 = lock_user_string(arg4); 8771 if (!p || !p2) 8772 ret = -TARGET_EFAULT; 8773 else 8774 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 8775 unlock_user(p, arg2, 0); 8776 unlock_user(p2, arg4, 0); 8777 } 8778 return ret; 8779 #endif 8780 #ifdef TARGET_NR_unlink 8781 case TARGET_NR_unlink: 8782 if (!(p = lock_user_string(arg1))) 8783 return -TARGET_EFAULT; 8784 ret = get_errno(unlink(p)); 8785 unlock_user(p, arg1, 0); 8786 return ret; 8787 #endif 8788 #if defined(TARGET_NR_unlinkat) 8789 case TARGET_NR_unlinkat: 8790 if (!(p = lock_user_string(arg2))) 8791 return -TARGET_EFAULT; 8792 ret = get_errno(unlinkat(arg1, p, arg3)); 8793 unlock_user(p, arg2, 0); 8794 return ret; 8795 #endif 8796 case TARGET_NR_execve: 8797 { 8798 char **argp, **envp; 8799 int argc, envc; 8800 abi_ulong gp; 8801 abi_ulong guest_argp; 8802 abi_ulong guest_envp; 8803 abi_ulong addr; 8804 char **q; 8805 8806 argc = 0; 8807 guest_argp = arg2; 8808 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8809 if (get_user_ual(addr, gp)) 8810 return -TARGET_EFAULT; 8811 if (!addr) 8812 break; 8813 argc++; 8814 } 8815 envc = 0; 8816 guest_envp = arg3; 8817 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8818 if (get_user_ual(addr, gp)) 8819 return -TARGET_EFAULT; 8820 if (!addr) 8821 break; 8822 envc++; 8823 } 8824 8825 argp = g_new0(char *, argc + 1); 8826 envp = g_new0(char *, envc + 1); 8827 8828 for (gp = guest_argp, q = argp; gp; 8829 gp += sizeof(abi_ulong), q++) { 8830 if (get_user_ual(addr, gp)) 8831 goto execve_efault; 8832 if (!addr) 8833 break; 8834 if (!(*q = lock_user_string(addr))) 8835 goto execve_efault; 8836 } 8837 *q = NULL; 8838 8839 for (gp = guest_envp, q = envp; gp; 8840 gp += sizeof(abi_ulong), q++) { 8841 if (get_user_ual(addr, gp)) 8842 goto execve_efault; 8843 if (!addr) 8844 break; 8845 if (!(*q = lock_user_string(addr))) 8846 goto execve_efault; 8847 } 8848 *q = NULL; 8849 8850 if (!(p = lock_user_string(arg1))) 8851 goto execve_efault; 8852 /* Although execve() is not an interruptible syscall it is 8853 * a special case where we must use the safe_syscall wrapper: 8854 * if we allow a signal to happen before we make the host 8855 * syscall then we will 'lose' it, because at the point of 8856 * execve the process leaves QEMU's control. So we use the 8857 * safe syscall wrapper to ensure that we either take the 8858 * signal as a guest signal, or else it does not happen 8859 * before the execve completes and makes it the other 8860 * program's problem. 8861 */ 8862 if (is_proc_myself(p, "exe")) { 8863 ret = get_errno(safe_execve(exec_path, argp, envp)); 8864 } else { 8865 ret = get_errno(safe_execve(p, argp, envp)); 8866 } 8867 unlock_user(p, arg1, 0); 8868 8869 goto execve_end; 8870 8871 execve_efault: 8872 ret = -TARGET_EFAULT; 8873 8874 execve_end: 8875 for (gp = guest_argp, q = argp; *q; 8876 gp += sizeof(abi_ulong), q++) { 8877 if (get_user_ual(addr, gp) 8878 || !addr) 8879 break; 8880 unlock_user(*q, addr, 0); 8881 } 8882 for (gp = guest_envp, q = envp; *q; 8883 gp += sizeof(abi_ulong), q++) { 8884 if (get_user_ual(addr, gp) 8885 || !addr) 8886 break; 8887 unlock_user(*q, addr, 0); 8888 } 8889 8890 g_free(argp); 8891 g_free(envp); 8892 } 8893 return ret; 8894 case TARGET_NR_chdir: 8895 if (!(p = lock_user_string(arg1))) 8896 return -TARGET_EFAULT; 8897 ret = get_errno(chdir(p)); 8898 unlock_user(p, arg1, 0); 8899 return ret; 8900 #ifdef TARGET_NR_time 8901 case TARGET_NR_time: 8902 { 8903 time_t host_time; 8904 ret = get_errno(time(&host_time)); 8905 if (!is_error(ret) 8906 && arg1 8907 && put_user_sal(host_time, arg1)) 8908 return -TARGET_EFAULT; 8909 } 8910 return ret; 8911 #endif 8912 #ifdef TARGET_NR_mknod 8913 case TARGET_NR_mknod: 8914 if (!(p = lock_user_string(arg1))) 8915 return -TARGET_EFAULT; 8916 ret = get_errno(mknod(p, arg2, arg3)); 8917 unlock_user(p, arg1, 0); 8918 return ret; 8919 #endif 8920 #if defined(TARGET_NR_mknodat) 8921 case TARGET_NR_mknodat: 8922 if (!(p = lock_user_string(arg2))) 8923 return -TARGET_EFAULT; 8924 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8925 unlock_user(p, arg2, 0); 8926 return ret; 8927 #endif 8928 #ifdef TARGET_NR_chmod 8929 case TARGET_NR_chmod: 8930 if (!(p = lock_user_string(arg1))) 8931 return -TARGET_EFAULT; 8932 ret = get_errno(chmod(p, arg2)); 8933 unlock_user(p, arg1, 0); 8934 return ret; 8935 #endif 8936 #ifdef TARGET_NR_lseek 8937 case TARGET_NR_lseek: 8938 return get_errno(lseek(arg1, arg2, arg3)); 8939 #endif 8940 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8941 /* Alpha specific */ 8942 case TARGET_NR_getxpid: 8943 cpu_env->ir[IR_A4] = getppid(); 8944 return get_errno(getpid()); 8945 #endif 8946 #ifdef TARGET_NR_getpid 8947 case TARGET_NR_getpid: 8948 return get_errno(getpid()); 8949 #endif 8950 case TARGET_NR_mount: 8951 { 8952 /* need to look at the data field */ 8953 void *p2, *p3; 8954 8955 if (arg1) { 8956 p = lock_user_string(arg1); 8957 if (!p) { 8958 return -TARGET_EFAULT; 8959 } 8960 } else { 8961 p = NULL; 8962 } 8963 8964 p2 = lock_user_string(arg2); 8965 if (!p2) { 8966 if (arg1) { 8967 unlock_user(p, arg1, 0); 8968 } 8969 return -TARGET_EFAULT; 8970 } 8971 8972 if (arg3) { 8973 p3 = lock_user_string(arg3); 8974 if (!p3) { 8975 if (arg1) { 8976 unlock_user(p, arg1, 0); 8977 } 8978 unlock_user(p2, arg2, 0); 8979 return -TARGET_EFAULT; 8980 } 8981 } else { 8982 p3 = NULL; 8983 } 8984 8985 /* FIXME - arg5 should be locked, but it isn't clear how to 8986 * do that since it's not guaranteed to be a NULL-terminated 8987 * string. 8988 */ 8989 if (!arg5) { 8990 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8991 } else { 8992 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 8993 } 8994 ret = get_errno(ret); 8995 8996 if (arg1) { 8997 unlock_user(p, arg1, 0); 8998 } 8999 unlock_user(p2, arg2, 0); 9000 if (arg3) { 9001 unlock_user(p3, arg3, 0); 9002 } 9003 } 9004 return ret; 9005 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 9006 #if defined(TARGET_NR_umount) 9007 case TARGET_NR_umount: 9008 #endif 9009 #if defined(TARGET_NR_oldumount) 9010 case TARGET_NR_oldumount: 9011 #endif 9012 if (!(p = lock_user_string(arg1))) 9013 return -TARGET_EFAULT; 9014 ret = get_errno(umount(p)); 9015 unlock_user(p, arg1, 0); 9016 return ret; 9017 #endif 9018 #ifdef TARGET_NR_stime /* not on alpha */ 9019 case TARGET_NR_stime: 9020 { 9021 struct timespec ts; 9022 ts.tv_nsec = 0; 9023 if (get_user_sal(ts.tv_sec, arg1)) { 9024 return -TARGET_EFAULT; 9025 } 9026 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 9027 } 9028 #endif 9029 #ifdef TARGET_NR_alarm /* not on alpha */ 9030 case TARGET_NR_alarm: 9031 return alarm(arg1); 9032 #endif 9033 #ifdef TARGET_NR_pause /* not on alpha */ 9034 case TARGET_NR_pause: 9035 if (!block_signals()) { 9036 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 9037 } 9038 return -TARGET_EINTR; 9039 #endif 9040 #ifdef TARGET_NR_utime 9041 case TARGET_NR_utime: 9042 { 9043 struct utimbuf tbuf, *host_tbuf; 9044 struct target_utimbuf *target_tbuf; 9045 if (arg2) { 9046 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 9047 return -TARGET_EFAULT; 9048 tbuf.actime = tswapal(target_tbuf->actime); 9049 tbuf.modtime = tswapal(target_tbuf->modtime); 9050 unlock_user_struct(target_tbuf, arg2, 0); 9051 host_tbuf = &tbuf; 9052 } else { 9053 host_tbuf = NULL; 9054 } 9055 if (!(p = lock_user_string(arg1))) 9056 return -TARGET_EFAULT; 9057 ret = get_errno(utime(p, host_tbuf)); 9058 unlock_user(p, arg1, 0); 9059 } 9060 return ret; 9061 #endif 9062 #ifdef TARGET_NR_utimes 9063 case TARGET_NR_utimes: 9064 { 9065 struct timeval *tvp, tv[2]; 9066 if (arg2) { 9067 if (copy_from_user_timeval(&tv[0], arg2) 9068 || copy_from_user_timeval(&tv[1], 9069 arg2 + sizeof(struct target_timeval))) 9070 return -TARGET_EFAULT; 9071 tvp = tv; 9072 } else { 9073 tvp = NULL; 9074 } 9075 if (!(p = lock_user_string(arg1))) 9076 return -TARGET_EFAULT; 9077 ret = get_errno(utimes(p, tvp)); 9078 unlock_user(p, arg1, 0); 9079 } 9080 return ret; 9081 #endif 9082 #if defined(TARGET_NR_futimesat) 9083 case TARGET_NR_futimesat: 9084 { 9085 struct timeval *tvp, tv[2]; 9086 if (arg3) { 9087 if (copy_from_user_timeval(&tv[0], arg3) 9088 || copy_from_user_timeval(&tv[1], 9089 arg3 + sizeof(struct target_timeval))) 9090 return -TARGET_EFAULT; 9091 tvp = tv; 9092 } else { 9093 tvp = NULL; 9094 } 9095 if (!(p = lock_user_string(arg2))) { 9096 return -TARGET_EFAULT; 9097 } 9098 ret = get_errno(futimesat(arg1, path(p), tvp)); 9099 unlock_user(p, arg2, 0); 9100 } 9101 return ret; 9102 #endif 9103 #ifdef TARGET_NR_access 9104 case TARGET_NR_access: 9105 if (!(p = lock_user_string(arg1))) { 9106 return -TARGET_EFAULT; 9107 } 9108 ret = get_errno(access(path(p), arg2)); 9109 unlock_user(p, arg1, 0); 9110 return ret; 9111 #endif 9112 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 9113 case TARGET_NR_faccessat: 9114 if (!(p = lock_user_string(arg2))) { 9115 return -TARGET_EFAULT; 9116 } 9117 ret = get_errno(faccessat(arg1, p, arg3, 0)); 9118 unlock_user(p, arg2, 0); 9119 return ret; 9120 #endif 9121 #ifdef TARGET_NR_nice /* not on alpha */ 9122 case TARGET_NR_nice: 9123 return get_errno(nice(arg1)); 9124 #endif 9125 case TARGET_NR_sync: 9126 sync(); 9127 return 0; 9128 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 9129 case TARGET_NR_syncfs: 9130 return get_errno(syncfs(arg1)); 9131 #endif 9132 case TARGET_NR_kill: 9133 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 9134 #ifdef TARGET_NR_rename 9135 case TARGET_NR_rename: 9136 { 9137 void *p2; 9138 p = lock_user_string(arg1); 9139 p2 = lock_user_string(arg2); 9140 if (!p || !p2) 9141 ret = -TARGET_EFAULT; 9142 else 9143 ret = get_errno(rename(p, p2)); 9144 unlock_user(p2, arg2, 0); 9145 unlock_user(p, arg1, 0); 9146 } 9147 return ret; 9148 #endif 9149 #if defined(TARGET_NR_renameat) 9150 case TARGET_NR_renameat: 9151 { 9152 void *p2; 9153 p = lock_user_string(arg2); 9154 p2 = lock_user_string(arg4); 9155 if (!p || !p2) 9156 ret = -TARGET_EFAULT; 9157 else 9158 ret = get_errno(renameat(arg1, p, arg3, p2)); 9159 unlock_user(p2, arg4, 0); 9160 unlock_user(p, arg2, 0); 9161 } 9162 return ret; 9163 #endif 9164 #if defined(TARGET_NR_renameat2) 9165 case TARGET_NR_renameat2: 9166 { 9167 void *p2; 9168 p = lock_user_string(arg2); 9169 p2 = lock_user_string(arg4); 9170 if (!p || !p2) { 9171 ret = -TARGET_EFAULT; 9172 } else { 9173 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 9174 } 9175 unlock_user(p2, arg4, 0); 9176 unlock_user(p, arg2, 0); 9177 } 9178 return ret; 9179 #endif 9180 #ifdef TARGET_NR_mkdir 9181 case TARGET_NR_mkdir: 9182 if (!(p = lock_user_string(arg1))) 9183 return -TARGET_EFAULT; 9184 ret = get_errno(mkdir(p, arg2)); 9185 unlock_user(p, arg1, 0); 9186 return ret; 9187 #endif 9188 #if defined(TARGET_NR_mkdirat) 9189 case TARGET_NR_mkdirat: 9190 if (!(p = lock_user_string(arg2))) 9191 return -TARGET_EFAULT; 9192 ret = get_errno(mkdirat(arg1, p, arg3)); 9193 unlock_user(p, arg2, 0); 9194 return ret; 9195 #endif 9196 #ifdef TARGET_NR_rmdir 9197 case TARGET_NR_rmdir: 9198 if (!(p = lock_user_string(arg1))) 9199 return -TARGET_EFAULT; 9200 ret = get_errno(rmdir(p)); 9201 unlock_user(p, arg1, 0); 9202 return ret; 9203 #endif 9204 case TARGET_NR_dup: 9205 ret = get_errno(dup(arg1)); 9206 if (ret >= 0) { 9207 fd_trans_dup(arg1, ret); 9208 } 9209 return ret; 9210 #ifdef TARGET_NR_pipe 9211 case TARGET_NR_pipe: 9212 return do_pipe(cpu_env, arg1, 0, 0); 9213 #endif 9214 #ifdef TARGET_NR_pipe2 9215 case TARGET_NR_pipe2: 9216 return do_pipe(cpu_env, arg1, 9217 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 9218 #endif 9219 case TARGET_NR_times: 9220 { 9221 struct target_tms *tmsp; 9222 struct tms tms; 9223 ret = get_errno(times(&tms)); 9224 if (arg1) { 9225 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 9226 if (!tmsp) 9227 return -TARGET_EFAULT; 9228 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 9229 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 9230 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 9231 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 9232 } 9233 if (!is_error(ret)) 9234 ret = host_to_target_clock_t(ret); 9235 } 9236 return ret; 9237 case TARGET_NR_acct: 9238 if (arg1 == 0) { 9239 ret = get_errno(acct(NULL)); 9240 } else { 9241 if (!(p = lock_user_string(arg1))) { 9242 return -TARGET_EFAULT; 9243 } 9244 ret = get_errno(acct(path(p))); 9245 unlock_user(p, arg1, 0); 9246 } 9247 return ret; 9248 #ifdef TARGET_NR_umount2 9249 case TARGET_NR_umount2: 9250 if (!(p = lock_user_string(arg1))) 9251 return -TARGET_EFAULT; 9252 ret = get_errno(umount2(p, arg2)); 9253 unlock_user(p, arg1, 0); 9254 return ret; 9255 #endif 9256 case TARGET_NR_ioctl: 9257 return do_ioctl(arg1, arg2, arg3); 9258 #ifdef TARGET_NR_fcntl 9259 case TARGET_NR_fcntl: 9260 return do_fcntl(arg1, arg2, arg3); 9261 #endif 9262 case TARGET_NR_setpgid: 9263 return get_errno(setpgid(arg1, arg2)); 9264 case TARGET_NR_umask: 9265 return get_errno(umask(arg1)); 9266 case TARGET_NR_chroot: 9267 if (!(p = lock_user_string(arg1))) 9268 return -TARGET_EFAULT; 9269 ret = get_errno(chroot(p)); 9270 unlock_user(p, arg1, 0); 9271 return ret; 9272 #ifdef TARGET_NR_dup2 9273 case TARGET_NR_dup2: 9274 ret = get_errno(dup2(arg1, arg2)); 9275 if (ret >= 0) { 9276 fd_trans_dup(arg1, arg2); 9277 } 9278 return ret; 9279 #endif 9280 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 9281 case TARGET_NR_dup3: 9282 { 9283 int host_flags; 9284 9285 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 9286 return -EINVAL; 9287 } 9288 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 9289 ret = get_errno(dup3(arg1, arg2, host_flags)); 9290 if (ret >= 0) { 9291 fd_trans_dup(arg1, arg2); 9292 } 9293 return ret; 9294 } 9295 #endif 9296 #ifdef TARGET_NR_getppid /* not on alpha */ 9297 case TARGET_NR_getppid: 9298 return get_errno(getppid()); 9299 #endif 9300 #ifdef TARGET_NR_getpgrp 9301 case TARGET_NR_getpgrp: 9302 return get_errno(getpgrp()); 9303 #endif 9304 case TARGET_NR_setsid: 9305 return get_errno(setsid()); 9306 #ifdef TARGET_NR_sigaction 9307 case TARGET_NR_sigaction: 9308 { 9309 #if defined(TARGET_MIPS) 9310 struct target_sigaction act, oact, *pact, *old_act; 9311 9312 if (arg2) { 9313 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9314 return -TARGET_EFAULT; 9315 act._sa_handler = old_act->_sa_handler; 9316 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 9317 act.sa_flags = old_act->sa_flags; 9318 unlock_user_struct(old_act, arg2, 0); 9319 pact = &act; 9320 } else { 9321 pact = NULL; 9322 } 9323 9324 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9325 9326 if (!is_error(ret) && arg3) { 9327 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9328 return -TARGET_EFAULT; 9329 old_act->_sa_handler = oact._sa_handler; 9330 old_act->sa_flags = oact.sa_flags; 9331 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9332 old_act->sa_mask.sig[1] = 0; 9333 old_act->sa_mask.sig[2] = 0; 9334 old_act->sa_mask.sig[3] = 0; 9335 unlock_user_struct(old_act, arg3, 1); 9336 } 9337 #else 9338 struct target_old_sigaction *old_act; 9339 struct target_sigaction act, oact, *pact; 9340 if (arg2) { 9341 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9342 return -TARGET_EFAULT; 9343 act._sa_handler = old_act->_sa_handler; 9344 target_siginitset(&act.sa_mask, old_act->sa_mask); 9345 act.sa_flags = old_act->sa_flags; 9346 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9347 act.sa_restorer = old_act->sa_restorer; 9348 #endif 9349 unlock_user_struct(old_act, arg2, 0); 9350 pact = &act; 9351 } else { 9352 pact = NULL; 9353 } 9354 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9355 if (!is_error(ret) && arg3) { 9356 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9357 return -TARGET_EFAULT; 9358 old_act->_sa_handler = oact._sa_handler; 9359 old_act->sa_mask = oact.sa_mask.sig[0]; 9360 old_act->sa_flags = oact.sa_flags; 9361 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9362 old_act->sa_restorer = oact.sa_restorer; 9363 #endif 9364 unlock_user_struct(old_act, arg3, 1); 9365 } 9366 #endif 9367 } 9368 return ret; 9369 #endif 9370 case TARGET_NR_rt_sigaction: 9371 { 9372 /* 9373 * For Alpha and SPARC this is a 5 argument syscall, with 9374 * a 'restorer' parameter which must be copied into the 9375 * sa_restorer field of the sigaction struct. 9376 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9377 * and arg5 is the sigsetsize. 9378 */ 9379 #if defined(TARGET_ALPHA) 9380 target_ulong sigsetsize = arg4; 9381 target_ulong restorer = arg5; 9382 #elif defined(TARGET_SPARC) 9383 target_ulong restorer = arg4; 9384 target_ulong sigsetsize = arg5; 9385 #else 9386 target_ulong sigsetsize = arg4; 9387 target_ulong restorer = 0; 9388 #endif 9389 struct target_sigaction *act = NULL; 9390 struct target_sigaction *oact = NULL; 9391 9392 if (sigsetsize != sizeof(target_sigset_t)) { 9393 return -TARGET_EINVAL; 9394 } 9395 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9396 return -TARGET_EFAULT; 9397 } 9398 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9399 ret = -TARGET_EFAULT; 9400 } else { 9401 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9402 if (oact) { 9403 unlock_user_struct(oact, arg3, 1); 9404 } 9405 } 9406 if (act) { 9407 unlock_user_struct(act, arg2, 0); 9408 } 9409 } 9410 return ret; 9411 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9412 case TARGET_NR_sgetmask: 9413 { 9414 sigset_t cur_set; 9415 abi_ulong target_set; 9416 ret = do_sigprocmask(0, NULL, &cur_set); 9417 if (!ret) { 9418 host_to_target_old_sigset(&target_set, &cur_set); 9419 ret = target_set; 9420 } 9421 } 9422 return ret; 9423 #endif 9424 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9425 case TARGET_NR_ssetmask: 9426 { 9427 sigset_t set, oset; 9428 abi_ulong target_set = arg1; 9429 target_to_host_old_sigset(&set, &target_set); 9430 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9431 if (!ret) { 9432 host_to_target_old_sigset(&target_set, &oset); 9433 ret = target_set; 9434 } 9435 } 9436 return ret; 9437 #endif 9438 #ifdef TARGET_NR_sigprocmask 9439 case TARGET_NR_sigprocmask: 9440 { 9441 #if defined(TARGET_ALPHA) 9442 sigset_t set, oldset; 9443 abi_ulong mask; 9444 int how; 9445 9446 switch (arg1) { 9447 case TARGET_SIG_BLOCK: 9448 how = SIG_BLOCK; 9449 break; 9450 case TARGET_SIG_UNBLOCK: 9451 how = SIG_UNBLOCK; 9452 break; 9453 case TARGET_SIG_SETMASK: 9454 how = SIG_SETMASK; 9455 break; 9456 default: 9457 return -TARGET_EINVAL; 9458 } 9459 mask = arg2; 9460 target_to_host_old_sigset(&set, &mask); 9461 9462 ret = do_sigprocmask(how, &set, &oldset); 9463 if (!is_error(ret)) { 9464 host_to_target_old_sigset(&mask, &oldset); 9465 ret = mask; 9466 cpu_env->ir[IR_V0] = 0; /* force no error */ 9467 } 9468 #else 9469 sigset_t set, oldset, *set_ptr; 9470 int how; 9471 9472 if (arg2) { 9473 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9474 if (!p) { 9475 return -TARGET_EFAULT; 9476 } 9477 target_to_host_old_sigset(&set, p); 9478 unlock_user(p, arg2, 0); 9479 set_ptr = &set; 9480 switch (arg1) { 9481 case TARGET_SIG_BLOCK: 9482 how = SIG_BLOCK; 9483 break; 9484 case TARGET_SIG_UNBLOCK: 9485 how = SIG_UNBLOCK; 9486 break; 9487 case TARGET_SIG_SETMASK: 9488 how = SIG_SETMASK; 9489 break; 9490 default: 9491 return -TARGET_EINVAL; 9492 } 9493 } else { 9494 how = 0; 9495 set_ptr = NULL; 9496 } 9497 ret = do_sigprocmask(how, set_ptr, &oldset); 9498 if (!is_error(ret) && arg3) { 9499 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9500 return -TARGET_EFAULT; 9501 host_to_target_old_sigset(p, &oldset); 9502 unlock_user(p, arg3, sizeof(target_sigset_t)); 9503 } 9504 #endif 9505 } 9506 return ret; 9507 #endif 9508 case TARGET_NR_rt_sigprocmask: 9509 { 9510 int how = arg1; 9511 sigset_t set, oldset, *set_ptr; 9512 9513 if (arg4 != sizeof(target_sigset_t)) { 9514 return -TARGET_EINVAL; 9515 } 9516 9517 if (arg2) { 9518 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9519 if (!p) { 9520 return -TARGET_EFAULT; 9521 } 9522 target_to_host_sigset(&set, p); 9523 unlock_user(p, arg2, 0); 9524 set_ptr = &set; 9525 switch(how) { 9526 case TARGET_SIG_BLOCK: 9527 how = SIG_BLOCK; 9528 break; 9529 case TARGET_SIG_UNBLOCK: 9530 how = SIG_UNBLOCK; 9531 break; 9532 case TARGET_SIG_SETMASK: 9533 how = SIG_SETMASK; 9534 break; 9535 default: 9536 return -TARGET_EINVAL; 9537 } 9538 } else { 9539 how = 0; 9540 set_ptr = NULL; 9541 } 9542 ret = do_sigprocmask(how, set_ptr, &oldset); 9543 if (!is_error(ret) && arg3) { 9544 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9545 return -TARGET_EFAULT; 9546 host_to_target_sigset(p, &oldset); 9547 unlock_user(p, arg3, sizeof(target_sigset_t)); 9548 } 9549 } 9550 return ret; 9551 #ifdef TARGET_NR_sigpending 9552 case TARGET_NR_sigpending: 9553 { 9554 sigset_t set; 9555 ret = get_errno(sigpending(&set)); 9556 if (!is_error(ret)) { 9557 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9558 return -TARGET_EFAULT; 9559 host_to_target_old_sigset(p, &set); 9560 unlock_user(p, arg1, sizeof(target_sigset_t)); 9561 } 9562 } 9563 return ret; 9564 #endif 9565 case TARGET_NR_rt_sigpending: 9566 { 9567 sigset_t set; 9568 9569 /* Yes, this check is >, not != like most. We follow the kernel's 9570 * logic and it does it like this because it implements 9571 * NR_sigpending through the same code path, and in that case 9572 * the old_sigset_t is smaller in size. 9573 */ 9574 if (arg2 > sizeof(target_sigset_t)) { 9575 return -TARGET_EINVAL; 9576 } 9577 9578 ret = get_errno(sigpending(&set)); 9579 if (!is_error(ret)) { 9580 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9581 return -TARGET_EFAULT; 9582 host_to_target_sigset(p, &set); 9583 unlock_user(p, arg1, sizeof(target_sigset_t)); 9584 } 9585 } 9586 return ret; 9587 #ifdef TARGET_NR_sigsuspend 9588 case TARGET_NR_sigsuspend: 9589 { 9590 sigset_t *set; 9591 9592 #if defined(TARGET_ALPHA) 9593 TaskState *ts = cpu->opaque; 9594 /* target_to_host_old_sigset will bswap back */ 9595 abi_ulong mask = tswapal(arg1); 9596 set = &ts->sigsuspend_mask; 9597 target_to_host_old_sigset(set, &mask); 9598 #else 9599 ret = process_sigsuspend_mask(&set, arg1, sizeof(target_sigset_t)); 9600 if (ret != 0) { 9601 return ret; 9602 } 9603 #endif 9604 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 9605 finish_sigsuspend_mask(ret); 9606 } 9607 return ret; 9608 #endif 9609 case TARGET_NR_rt_sigsuspend: 9610 { 9611 sigset_t *set; 9612 9613 ret = process_sigsuspend_mask(&set, arg1, arg2); 9614 if (ret != 0) { 9615 return ret; 9616 } 9617 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 9618 finish_sigsuspend_mask(ret); 9619 } 9620 return ret; 9621 #ifdef TARGET_NR_rt_sigtimedwait 9622 case TARGET_NR_rt_sigtimedwait: 9623 { 9624 sigset_t set; 9625 struct timespec uts, *puts; 9626 siginfo_t uinfo; 9627 9628 if (arg4 != sizeof(target_sigset_t)) { 9629 return -TARGET_EINVAL; 9630 } 9631 9632 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9633 return -TARGET_EFAULT; 9634 target_to_host_sigset(&set, p); 9635 unlock_user(p, arg1, 0); 9636 if (arg3) { 9637 puts = &uts; 9638 if (target_to_host_timespec(puts, arg3)) { 9639 return -TARGET_EFAULT; 9640 } 9641 } else { 9642 puts = NULL; 9643 } 9644 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9645 SIGSET_T_SIZE)); 9646 if (!is_error(ret)) { 9647 if (arg2) { 9648 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 9649 0); 9650 if (!p) { 9651 return -TARGET_EFAULT; 9652 } 9653 host_to_target_siginfo(p, &uinfo); 9654 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9655 } 9656 ret = host_to_target_signal(ret); 9657 } 9658 } 9659 return ret; 9660 #endif 9661 #ifdef TARGET_NR_rt_sigtimedwait_time64 9662 case TARGET_NR_rt_sigtimedwait_time64: 9663 { 9664 sigset_t set; 9665 struct timespec uts, *puts; 9666 siginfo_t uinfo; 9667 9668 if (arg4 != sizeof(target_sigset_t)) { 9669 return -TARGET_EINVAL; 9670 } 9671 9672 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 9673 if (!p) { 9674 return -TARGET_EFAULT; 9675 } 9676 target_to_host_sigset(&set, p); 9677 unlock_user(p, arg1, 0); 9678 if (arg3) { 9679 puts = &uts; 9680 if (target_to_host_timespec64(puts, arg3)) { 9681 return -TARGET_EFAULT; 9682 } 9683 } else { 9684 puts = NULL; 9685 } 9686 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9687 SIGSET_T_SIZE)); 9688 if (!is_error(ret)) { 9689 if (arg2) { 9690 p = lock_user(VERIFY_WRITE, arg2, 9691 sizeof(target_siginfo_t), 0); 9692 if (!p) { 9693 return -TARGET_EFAULT; 9694 } 9695 host_to_target_siginfo(p, &uinfo); 9696 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9697 } 9698 ret = host_to_target_signal(ret); 9699 } 9700 } 9701 return ret; 9702 #endif 9703 case TARGET_NR_rt_sigqueueinfo: 9704 { 9705 siginfo_t uinfo; 9706 9707 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9708 if (!p) { 9709 return -TARGET_EFAULT; 9710 } 9711 target_to_host_siginfo(&uinfo, p); 9712 unlock_user(p, arg3, 0); 9713 ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo)); 9714 } 9715 return ret; 9716 case TARGET_NR_rt_tgsigqueueinfo: 9717 { 9718 siginfo_t uinfo; 9719 9720 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 9721 if (!p) { 9722 return -TARGET_EFAULT; 9723 } 9724 target_to_host_siginfo(&uinfo, p); 9725 unlock_user(p, arg4, 0); 9726 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo)); 9727 } 9728 return ret; 9729 #ifdef TARGET_NR_sigreturn 9730 case TARGET_NR_sigreturn: 9731 if (block_signals()) { 9732 return -QEMU_ERESTARTSYS; 9733 } 9734 return do_sigreturn(cpu_env); 9735 #endif 9736 case TARGET_NR_rt_sigreturn: 9737 if (block_signals()) { 9738 return -QEMU_ERESTARTSYS; 9739 } 9740 return do_rt_sigreturn(cpu_env); 9741 case TARGET_NR_sethostname: 9742 if (!(p = lock_user_string(arg1))) 9743 return -TARGET_EFAULT; 9744 ret = get_errno(sethostname(p, arg2)); 9745 unlock_user(p, arg1, 0); 9746 return ret; 9747 #ifdef TARGET_NR_setrlimit 9748 case TARGET_NR_setrlimit: 9749 { 9750 int resource = target_to_host_resource(arg1); 9751 struct target_rlimit *target_rlim; 9752 struct rlimit rlim; 9753 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 9754 return -TARGET_EFAULT; 9755 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 9756 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 9757 unlock_user_struct(target_rlim, arg2, 0); 9758 /* 9759 * If we just passed through resource limit settings for memory then 9760 * they would also apply to QEMU's own allocations, and QEMU will 9761 * crash or hang or die if its allocations fail. Ideally we would 9762 * track the guest allocations in QEMU and apply the limits ourselves. 9763 * For now, just tell the guest the call succeeded but don't actually 9764 * limit anything. 9765 */ 9766 if (resource != RLIMIT_AS && 9767 resource != RLIMIT_DATA && 9768 resource != RLIMIT_STACK) { 9769 return get_errno(setrlimit(resource, &rlim)); 9770 } else { 9771 return 0; 9772 } 9773 } 9774 #endif 9775 #ifdef TARGET_NR_getrlimit 9776 case TARGET_NR_getrlimit: 9777 { 9778 int resource = target_to_host_resource(arg1); 9779 struct target_rlimit *target_rlim; 9780 struct rlimit rlim; 9781 9782 ret = get_errno(getrlimit(resource, &rlim)); 9783 if (!is_error(ret)) { 9784 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 9785 return -TARGET_EFAULT; 9786 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 9787 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 9788 unlock_user_struct(target_rlim, arg2, 1); 9789 } 9790 } 9791 return ret; 9792 #endif 9793 case TARGET_NR_getrusage: 9794 { 9795 struct rusage rusage; 9796 ret = get_errno(getrusage(arg1, &rusage)); 9797 if (!is_error(ret)) { 9798 ret = host_to_target_rusage(arg2, &rusage); 9799 } 9800 } 9801 return ret; 9802 #if defined(TARGET_NR_gettimeofday) 9803 case TARGET_NR_gettimeofday: 9804 { 9805 struct timeval tv; 9806 struct timezone tz; 9807 9808 ret = get_errno(gettimeofday(&tv, &tz)); 9809 if (!is_error(ret)) { 9810 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 9811 return -TARGET_EFAULT; 9812 } 9813 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 9814 return -TARGET_EFAULT; 9815 } 9816 } 9817 } 9818 return ret; 9819 #endif 9820 #if defined(TARGET_NR_settimeofday) 9821 case TARGET_NR_settimeofday: 9822 { 9823 struct timeval tv, *ptv = NULL; 9824 struct timezone tz, *ptz = NULL; 9825 9826 if (arg1) { 9827 if (copy_from_user_timeval(&tv, arg1)) { 9828 return -TARGET_EFAULT; 9829 } 9830 ptv = &tv; 9831 } 9832 9833 if (arg2) { 9834 if (copy_from_user_timezone(&tz, arg2)) { 9835 return -TARGET_EFAULT; 9836 } 9837 ptz = &tz; 9838 } 9839 9840 return get_errno(settimeofday(ptv, ptz)); 9841 } 9842 #endif 9843 #if defined(TARGET_NR_select) 9844 case TARGET_NR_select: 9845 #if defined(TARGET_WANT_NI_OLD_SELECT) 9846 /* some architectures used to have old_select here 9847 * but now ENOSYS it. 9848 */ 9849 ret = -TARGET_ENOSYS; 9850 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 9851 ret = do_old_select(arg1); 9852 #else 9853 ret = do_select(arg1, arg2, arg3, arg4, arg5); 9854 #endif 9855 return ret; 9856 #endif 9857 #ifdef TARGET_NR_pselect6 9858 case TARGET_NR_pselect6: 9859 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 9860 #endif 9861 #ifdef TARGET_NR_pselect6_time64 9862 case TARGET_NR_pselect6_time64: 9863 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 9864 #endif 9865 #ifdef TARGET_NR_symlink 9866 case TARGET_NR_symlink: 9867 { 9868 void *p2; 9869 p = lock_user_string(arg1); 9870 p2 = lock_user_string(arg2); 9871 if (!p || !p2) 9872 ret = -TARGET_EFAULT; 9873 else 9874 ret = get_errno(symlink(p, p2)); 9875 unlock_user(p2, arg2, 0); 9876 unlock_user(p, arg1, 0); 9877 } 9878 return ret; 9879 #endif 9880 #if defined(TARGET_NR_symlinkat) 9881 case TARGET_NR_symlinkat: 9882 { 9883 void *p2; 9884 p = lock_user_string(arg1); 9885 p2 = lock_user_string(arg3); 9886 if (!p || !p2) 9887 ret = -TARGET_EFAULT; 9888 else 9889 ret = get_errno(symlinkat(p, arg2, p2)); 9890 unlock_user(p2, arg3, 0); 9891 unlock_user(p, arg1, 0); 9892 } 9893 return ret; 9894 #endif 9895 #ifdef TARGET_NR_readlink 9896 case TARGET_NR_readlink: 9897 { 9898 void *p2; 9899 p = lock_user_string(arg1); 9900 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9901 if (!p || !p2) { 9902 ret = -TARGET_EFAULT; 9903 } else if (!arg3) { 9904 /* Short circuit this for the magic exe check. */ 9905 ret = -TARGET_EINVAL; 9906 } else if (is_proc_myself((const char *)p, "exe")) { 9907 char real[PATH_MAX], *temp; 9908 temp = realpath(exec_path, real); 9909 /* Return value is # of bytes that we wrote to the buffer. */ 9910 if (temp == NULL) { 9911 ret = get_errno(-1); 9912 } else { 9913 /* Don't worry about sign mismatch as earlier mapping 9914 * logic would have thrown a bad address error. */ 9915 ret = MIN(strlen(real), arg3); 9916 /* We cannot NUL terminate the string. */ 9917 memcpy(p2, real, ret); 9918 } 9919 } else { 9920 ret = get_errno(readlink(path(p), p2, arg3)); 9921 } 9922 unlock_user(p2, arg2, ret); 9923 unlock_user(p, arg1, 0); 9924 } 9925 return ret; 9926 #endif 9927 #if defined(TARGET_NR_readlinkat) 9928 case TARGET_NR_readlinkat: 9929 { 9930 void *p2; 9931 p = lock_user_string(arg2); 9932 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9933 if (!p || !p2) { 9934 ret = -TARGET_EFAULT; 9935 } else if (!arg4) { 9936 /* Short circuit this for the magic exe check. */ 9937 ret = -TARGET_EINVAL; 9938 } else if (is_proc_myself((const char *)p, "exe")) { 9939 char real[PATH_MAX], *temp; 9940 temp = realpath(exec_path, real); 9941 /* Return value is # of bytes that we wrote to the buffer. */ 9942 if (temp == NULL) { 9943 ret = get_errno(-1); 9944 } else { 9945 /* Don't worry about sign mismatch as earlier mapping 9946 * logic would have thrown a bad address error. */ 9947 ret = MIN(strlen(real), arg4); 9948 /* We cannot NUL terminate the string. */ 9949 memcpy(p2, real, ret); 9950 } 9951 } else { 9952 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9953 } 9954 unlock_user(p2, arg3, ret); 9955 unlock_user(p, arg2, 0); 9956 } 9957 return ret; 9958 #endif 9959 #ifdef TARGET_NR_swapon 9960 case TARGET_NR_swapon: 9961 if (!(p = lock_user_string(arg1))) 9962 return -TARGET_EFAULT; 9963 ret = get_errno(swapon(p, arg2)); 9964 unlock_user(p, arg1, 0); 9965 return ret; 9966 #endif 9967 case TARGET_NR_reboot: 9968 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9969 /* arg4 must be ignored in all other cases */ 9970 p = lock_user_string(arg4); 9971 if (!p) { 9972 return -TARGET_EFAULT; 9973 } 9974 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9975 unlock_user(p, arg4, 0); 9976 } else { 9977 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9978 } 9979 return ret; 9980 #ifdef TARGET_NR_mmap 9981 case TARGET_NR_mmap: 9982 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9983 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9984 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9985 || defined(TARGET_S390X) 9986 { 9987 abi_ulong *v; 9988 abi_ulong v1, v2, v3, v4, v5, v6; 9989 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9990 return -TARGET_EFAULT; 9991 v1 = tswapal(v[0]); 9992 v2 = tswapal(v[1]); 9993 v3 = tswapal(v[2]); 9994 v4 = tswapal(v[3]); 9995 v5 = tswapal(v[4]); 9996 v6 = tswapal(v[5]); 9997 unlock_user(v, arg1, 0); 9998 ret = get_errno(target_mmap(v1, v2, v3, 9999 target_to_host_bitmask(v4, mmap_flags_tbl), 10000 v5, v6)); 10001 } 10002 #else 10003 /* mmap pointers are always untagged */ 10004 ret = get_errno(target_mmap(arg1, arg2, arg3, 10005 target_to_host_bitmask(arg4, mmap_flags_tbl), 10006 arg5, 10007 arg6)); 10008 #endif 10009 return ret; 10010 #endif 10011 #ifdef TARGET_NR_mmap2 10012 case TARGET_NR_mmap2: 10013 #ifndef MMAP_SHIFT 10014 #define MMAP_SHIFT 12 10015 #endif 10016 ret = target_mmap(arg1, arg2, arg3, 10017 target_to_host_bitmask(arg4, mmap_flags_tbl), 10018 arg5, arg6 << MMAP_SHIFT); 10019 return get_errno(ret); 10020 #endif 10021 case TARGET_NR_munmap: 10022 arg1 = cpu_untagged_addr(cpu, arg1); 10023 return get_errno(target_munmap(arg1, arg2)); 10024 case TARGET_NR_mprotect: 10025 arg1 = cpu_untagged_addr(cpu, arg1); 10026 { 10027 TaskState *ts = cpu->opaque; 10028 /* Special hack to detect libc making the stack executable. */ 10029 if ((arg3 & PROT_GROWSDOWN) 10030 && arg1 >= ts->info->stack_limit 10031 && arg1 <= ts->info->start_stack) { 10032 arg3 &= ~PROT_GROWSDOWN; 10033 arg2 = arg2 + arg1 - ts->info->stack_limit; 10034 arg1 = ts->info->stack_limit; 10035 } 10036 } 10037 return get_errno(target_mprotect(arg1, arg2, arg3)); 10038 #ifdef TARGET_NR_mremap 10039 case TARGET_NR_mremap: 10040 arg1 = cpu_untagged_addr(cpu, arg1); 10041 /* mremap new_addr (arg5) is always untagged */ 10042 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 10043 #endif 10044 /* ??? msync/mlock/munlock are broken for softmmu. */ 10045 #ifdef TARGET_NR_msync 10046 case TARGET_NR_msync: 10047 return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); 10048 #endif 10049 #ifdef TARGET_NR_mlock 10050 case TARGET_NR_mlock: 10051 return get_errno(mlock(g2h(cpu, arg1), arg2)); 10052 #endif 10053 #ifdef TARGET_NR_munlock 10054 case TARGET_NR_munlock: 10055 return get_errno(munlock(g2h(cpu, arg1), arg2)); 10056 #endif 10057 #ifdef TARGET_NR_mlockall 10058 case TARGET_NR_mlockall: 10059 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 10060 #endif 10061 #ifdef TARGET_NR_munlockall 10062 case TARGET_NR_munlockall: 10063 return get_errno(munlockall()); 10064 #endif 10065 #ifdef TARGET_NR_truncate 10066 case TARGET_NR_truncate: 10067 if (!(p = lock_user_string(arg1))) 10068 return -TARGET_EFAULT; 10069 ret = get_errno(truncate(p, arg2)); 10070 unlock_user(p, arg1, 0); 10071 return ret; 10072 #endif 10073 #ifdef TARGET_NR_ftruncate 10074 case TARGET_NR_ftruncate: 10075 return get_errno(ftruncate(arg1, arg2)); 10076 #endif 10077 case TARGET_NR_fchmod: 10078 return get_errno(fchmod(arg1, arg2)); 10079 #if defined(TARGET_NR_fchmodat) 10080 case TARGET_NR_fchmodat: 10081 if (!(p = lock_user_string(arg2))) 10082 return -TARGET_EFAULT; 10083 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 10084 unlock_user(p, arg2, 0); 10085 return ret; 10086 #endif 10087 case TARGET_NR_getpriority: 10088 /* Note that negative values are valid for getpriority, so we must 10089 differentiate based on errno settings. */ 10090 errno = 0; 10091 ret = getpriority(arg1, arg2); 10092 if (ret == -1 && errno != 0) { 10093 return -host_to_target_errno(errno); 10094 } 10095 #ifdef TARGET_ALPHA 10096 /* Return value is the unbiased priority. Signal no error. */ 10097 cpu_env->ir[IR_V0] = 0; 10098 #else 10099 /* Return value is a biased priority to avoid negative numbers. */ 10100 ret = 20 - ret; 10101 #endif 10102 return ret; 10103 case TARGET_NR_setpriority: 10104 return get_errno(setpriority(arg1, arg2, arg3)); 10105 #ifdef TARGET_NR_statfs 10106 case TARGET_NR_statfs: 10107 if (!(p = lock_user_string(arg1))) { 10108 return -TARGET_EFAULT; 10109 } 10110 ret = get_errno(statfs(path(p), &stfs)); 10111 unlock_user(p, arg1, 0); 10112 convert_statfs: 10113 if (!is_error(ret)) { 10114 struct target_statfs *target_stfs; 10115 10116 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 10117 return -TARGET_EFAULT; 10118 __put_user(stfs.f_type, &target_stfs->f_type); 10119 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10120 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10121 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10122 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10123 __put_user(stfs.f_files, &target_stfs->f_files); 10124 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10125 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10126 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10127 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10128 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10129 #ifdef _STATFS_F_FLAGS 10130 __put_user(stfs.f_flags, &target_stfs->f_flags); 10131 #else 10132 __put_user(0, &target_stfs->f_flags); 10133 #endif 10134 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10135 unlock_user_struct(target_stfs, arg2, 1); 10136 } 10137 return ret; 10138 #endif 10139 #ifdef TARGET_NR_fstatfs 10140 case TARGET_NR_fstatfs: 10141 ret = get_errno(fstatfs(arg1, &stfs)); 10142 goto convert_statfs; 10143 #endif 10144 #ifdef TARGET_NR_statfs64 10145 case TARGET_NR_statfs64: 10146 if (!(p = lock_user_string(arg1))) { 10147 return -TARGET_EFAULT; 10148 } 10149 ret = get_errno(statfs(path(p), &stfs)); 10150 unlock_user(p, arg1, 0); 10151 convert_statfs64: 10152 if (!is_error(ret)) { 10153 struct target_statfs64 *target_stfs; 10154 10155 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 10156 return -TARGET_EFAULT; 10157 __put_user(stfs.f_type, &target_stfs->f_type); 10158 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10159 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10160 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10161 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10162 __put_user(stfs.f_files, &target_stfs->f_files); 10163 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10164 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10165 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10166 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10167 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10168 #ifdef _STATFS_F_FLAGS 10169 __put_user(stfs.f_flags, &target_stfs->f_flags); 10170 #else 10171 __put_user(0, &target_stfs->f_flags); 10172 #endif 10173 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10174 unlock_user_struct(target_stfs, arg3, 1); 10175 } 10176 return ret; 10177 case TARGET_NR_fstatfs64: 10178 ret = get_errno(fstatfs(arg1, &stfs)); 10179 goto convert_statfs64; 10180 #endif 10181 #ifdef TARGET_NR_socketcall 10182 case TARGET_NR_socketcall: 10183 return do_socketcall(arg1, arg2); 10184 #endif 10185 #ifdef TARGET_NR_accept 10186 case TARGET_NR_accept: 10187 return do_accept4(arg1, arg2, arg3, 0); 10188 #endif 10189 #ifdef TARGET_NR_accept4 10190 case TARGET_NR_accept4: 10191 return do_accept4(arg1, arg2, arg3, arg4); 10192 #endif 10193 #ifdef TARGET_NR_bind 10194 case TARGET_NR_bind: 10195 return do_bind(arg1, arg2, arg3); 10196 #endif 10197 #ifdef TARGET_NR_connect 10198 case TARGET_NR_connect: 10199 return do_connect(arg1, arg2, arg3); 10200 #endif 10201 #ifdef TARGET_NR_getpeername 10202 case TARGET_NR_getpeername: 10203 return do_getpeername(arg1, arg2, arg3); 10204 #endif 10205 #ifdef TARGET_NR_getsockname 10206 case TARGET_NR_getsockname: 10207 return do_getsockname(arg1, arg2, arg3); 10208 #endif 10209 #ifdef TARGET_NR_getsockopt 10210 case TARGET_NR_getsockopt: 10211 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 10212 #endif 10213 #ifdef TARGET_NR_listen 10214 case TARGET_NR_listen: 10215 return get_errno(listen(arg1, arg2)); 10216 #endif 10217 #ifdef TARGET_NR_recv 10218 case TARGET_NR_recv: 10219 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 10220 #endif 10221 #ifdef TARGET_NR_recvfrom 10222 case TARGET_NR_recvfrom: 10223 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 10224 #endif 10225 #ifdef TARGET_NR_recvmsg 10226 case TARGET_NR_recvmsg: 10227 return do_sendrecvmsg(arg1, arg2, arg3, 0); 10228 #endif 10229 #ifdef TARGET_NR_send 10230 case TARGET_NR_send: 10231 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 10232 #endif 10233 #ifdef TARGET_NR_sendmsg 10234 case TARGET_NR_sendmsg: 10235 return do_sendrecvmsg(arg1, arg2, arg3, 1); 10236 #endif 10237 #ifdef TARGET_NR_sendmmsg 10238 case TARGET_NR_sendmmsg: 10239 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 10240 #endif 10241 #ifdef TARGET_NR_recvmmsg 10242 case TARGET_NR_recvmmsg: 10243 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 10244 #endif 10245 #ifdef TARGET_NR_sendto 10246 case TARGET_NR_sendto: 10247 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 10248 #endif 10249 #ifdef TARGET_NR_shutdown 10250 case TARGET_NR_shutdown: 10251 return get_errno(shutdown(arg1, arg2)); 10252 #endif 10253 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 10254 case TARGET_NR_getrandom: 10255 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 10256 if (!p) { 10257 return -TARGET_EFAULT; 10258 } 10259 ret = get_errno(getrandom(p, arg2, arg3)); 10260 unlock_user(p, arg1, ret); 10261 return ret; 10262 #endif 10263 #ifdef TARGET_NR_socket 10264 case TARGET_NR_socket: 10265 return do_socket(arg1, arg2, arg3); 10266 #endif 10267 #ifdef TARGET_NR_socketpair 10268 case TARGET_NR_socketpair: 10269 return do_socketpair(arg1, arg2, arg3, arg4); 10270 #endif 10271 #ifdef TARGET_NR_setsockopt 10272 case TARGET_NR_setsockopt: 10273 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 10274 #endif 10275 #if defined(TARGET_NR_syslog) 10276 case TARGET_NR_syslog: 10277 { 10278 int len = arg2; 10279 10280 switch (arg1) { 10281 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 10282 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 10283 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 10284 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 10285 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 10286 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 10287 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 10288 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 10289 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 10290 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 10291 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 10292 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 10293 { 10294 if (len < 0) { 10295 return -TARGET_EINVAL; 10296 } 10297 if (len == 0) { 10298 return 0; 10299 } 10300 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10301 if (!p) { 10302 return -TARGET_EFAULT; 10303 } 10304 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 10305 unlock_user(p, arg2, arg3); 10306 } 10307 return ret; 10308 default: 10309 return -TARGET_EINVAL; 10310 } 10311 } 10312 break; 10313 #endif 10314 case TARGET_NR_setitimer: 10315 { 10316 struct itimerval value, ovalue, *pvalue; 10317 10318 if (arg2) { 10319 pvalue = &value; 10320 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 10321 || copy_from_user_timeval(&pvalue->it_value, 10322 arg2 + sizeof(struct target_timeval))) 10323 return -TARGET_EFAULT; 10324 } else { 10325 pvalue = NULL; 10326 } 10327 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 10328 if (!is_error(ret) && arg3) { 10329 if (copy_to_user_timeval(arg3, 10330 &ovalue.it_interval) 10331 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10332 &ovalue.it_value)) 10333 return -TARGET_EFAULT; 10334 } 10335 } 10336 return ret; 10337 case TARGET_NR_getitimer: 10338 { 10339 struct itimerval value; 10340 10341 ret = get_errno(getitimer(arg1, &value)); 10342 if (!is_error(ret) && arg2) { 10343 if (copy_to_user_timeval(arg2, 10344 &value.it_interval) 10345 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10346 &value.it_value)) 10347 return -TARGET_EFAULT; 10348 } 10349 } 10350 return ret; 10351 #ifdef TARGET_NR_stat 10352 case TARGET_NR_stat: 10353 if (!(p = lock_user_string(arg1))) { 10354 return -TARGET_EFAULT; 10355 } 10356 ret = get_errno(stat(path(p), &st)); 10357 unlock_user(p, arg1, 0); 10358 goto do_stat; 10359 #endif 10360 #ifdef TARGET_NR_lstat 10361 case TARGET_NR_lstat: 10362 if (!(p = lock_user_string(arg1))) { 10363 return -TARGET_EFAULT; 10364 } 10365 ret = get_errno(lstat(path(p), &st)); 10366 unlock_user(p, arg1, 0); 10367 goto do_stat; 10368 #endif 10369 #ifdef TARGET_NR_fstat 10370 case TARGET_NR_fstat: 10371 { 10372 ret = get_errno(fstat(arg1, &st)); 10373 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10374 do_stat: 10375 #endif 10376 if (!is_error(ret)) { 10377 struct target_stat *target_st; 10378 10379 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10380 return -TARGET_EFAULT; 10381 memset(target_st, 0, sizeof(*target_st)); 10382 __put_user(st.st_dev, &target_st->st_dev); 10383 __put_user(st.st_ino, &target_st->st_ino); 10384 __put_user(st.st_mode, &target_st->st_mode); 10385 __put_user(st.st_uid, &target_st->st_uid); 10386 __put_user(st.st_gid, &target_st->st_gid); 10387 __put_user(st.st_nlink, &target_st->st_nlink); 10388 __put_user(st.st_rdev, &target_st->st_rdev); 10389 __put_user(st.st_size, &target_st->st_size); 10390 __put_user(st.st_blksize, &target_st->st_blksize); 10391 __put_user(st.st_blocks, &target_st->st_blocks); 10392 __put_user(st.st_atime, &target_st->target_st_atime); 10393 __put_user(st.st_mtime, &target_st->target_st_mtime); 10394 __put_user(st.st_ctime, &target_st->target_st_ctime); 10395 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC) 10396 __put_user(st.st_atim.tv_nsec, 10397 &target_st->target_st_atime_nsec); 10398 __put_user(st.st_mtim.tv_nsec, 10399 &target_st->target_st_mtime_nsec); 10400 __put_user(st.st_ctim.tv_nsec, 10401 &target_st->target_st_ctime_nsec); 10402 #endif 10403 unlock_user_struct(target_st, arg2, 1); 10404 } 10405 } 10406 return ret; 10407 #endif 10408 case TARGET_NR_vhangup: 10409 return get_errno(vhangup()); 10410 #ifdef TARGET_NR_syscall 10411 case TARGET_NR_syscall: 10412 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10413 arg6, arg7, arg8, 0); 10414 #endif 10415 #if defined(TARGET_NR_wait4) 10416 case TARGET_NR_wait4: 10417 { 10418 int status; 10419 abi_long status_ptr = arg2; 10420 struct rusage rusage, *rusage_ptr; 10421 abi_ulong target_rusage = arg4; 10422 abi_long rusage_err; 10423 if (target_rusage) 10424 rusage_ptr = &rusage; 10425 else 10426 rusage_ptr = NULL; 10427 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10428 if (!is_error(ret)) { 10429 if (status_ptr && ret) { 10430 status = host_to_target_waitstatus(status); 10431 if (put_user_s32(status, status_ptr)) 10432 return -TARGET_EFAULT; 10433 } 10434 if (target_rusage) { 10435 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10436 if (rusage_err) { 10437 ret = rusage_err; 10438 } 10439 } 10440 } 10441 } 10442 return ret; 10443 #endif 10444 #ifdef TARGET_NR_swapoff 10445 case TARGET_NR_swapoff: 10446 if (!(p = lock_user_string(arg1))) 10447 return -TARGET_EFAULT; 10448 ret = get_errno(swapoff(p)); 10449 unlock_user(p, arg1, 0); 10450 return ret; 10451 #endif 10452 case TARGET_NR_sysinfo: 10453 { 10454 struct target_sysinfo *target_value; 10455 struct sysinfo value; 10456 ret = get_errno(sysinfo(&value)); 10457 if (!is_error(ret) && arg1) 10458 { 10459 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10460 return -TARGET_EFAULT; 10461 __put_user(value.uptime, &target_value->uptime); 10462 __put_user(value.loads[0], &target_value->loads[0]); 10463 __put_user(value.loads[1], &target_value->loads[1]); 10464 __put_user(value.loads[2], &target_value->loads[2]); 10465 __put_user(value.totalram, &target_value->totalram); 10466 __put_user(value.freeram, &target_value->freeram); 10467 __put_user(value.sharedram, &target_value->sharedram); 10468 __put_user(value.bufferram, &target_value->bufferram); 10469 __put_user(value.totalswap, &target_value->totalswap); 10470 __put_user(value.freeswap, &target_value->freeswap); 10471 __put_user(value.procs, &target_value->procs); 10472 __put_user(value.totalhigh, &target_value->totalhigh); 10473 __put_user(value.freehigh, &target_value->freehigh); 10474 __put_user(value.mem_unit, &target_value->mem_unit); 10475 unlock_user_struct(target_value, arg1, 1); 10476 } 10477 } 10478 return ret; 10479 #ifdef TARGET_NR_ipc 10480 case TARGET_NR_ipc: 10481 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10482 #endif 10483 #ifdef TARGET_NR_semget 10484 case TARGET_NR_semget: 10485 return get_errno(semget(arg1, arg2, arg3)); 10486 #endif 10487 #ifdef TARGET_NR_semop 10488 case TARGET_NR_semop: 10489 return do_semtimedop(arg1, arg2, arg3, 0, false); 10490 #endif 10491 #ifdef TARGET_NR_semtimedop 10492 case TARGET_NR_semtimedop: 10493 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10494 #endif 10495 #ifdef TARGET_NR_semtimedop_time64 10496 case TARGET_NR_semtimedop_time64: 10497 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10498 #endif 10499 #ifdef TARGET_NR_semctl 10500 case TARGET_NR_semctl: 10501 return do_semctl(arg1, arg2, arg3, arg4); 10502 #endif 10503 #ifdef TARGET_NR_msgctl 10504 case TARGET_NR_msgctl: 10505 return do_msgctl(arg1, arg2, arg3); 10506 #endif 10507 #ifdef TARGET_NR_msgget 10508 case TARGET_NR_msgget: 10509 return get_errno(msgget(arg1, arg2)); 10510 #endif 10511 #ifdef TARGET_NR_msgrcv 10512 case TARGET_NR_msgrcv: 10513 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10514 #endif 10515 #ifdef TARGET_NR_msgsnd 10516 case TARGET_NR_msgsnd: 10517 return do_msgsnd(arg1, arg2, arg3, arg4); 10518 #endif 10519 #ifdef TARGET_NR_shmget 10520 case TARGET_NR_shmget: 10521 return get_errno(shmget(arg1, arg2, arg3)); 10522 #endif 10523 #ifdef TARGET_NR_shmctl 10524 case TARGET_NR_shmctl: 10525 return do_shmctl(arg1, arg2, arg3); 10526 #endif 10527 #ifdef TARGET_NR_shmat 10528 case TARGET_NR_shmat: 10529 return do_shmat(cpu_env, arg1, arg2, arg3); 10530 #endif 10531 #ifdef TARGET_NR_shmdt 10532 case TARGET_NR_shmdt: 10533 return do_shmdt(arg1); 10534 #endif 10535 case TARGET_NR_fsync: 10536 return get_errno(fsync(arg1)); 10537 case TARGET_NR_clone: 10538 /* Linux manages to have three different orderings for its 10539 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 10540 * match the kernel's CONFIG_CLONE_* settings. 10541 * Microblaze is further special in that it uses a sixth 10542 * implicit argument to clone for the TLS pointer. 10543 */ 10544 #if defined(TARGET_MICROBLAZE) 10545 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 10546 #elif defined(TARGET_CLONE_BACKWARDS) 10547 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 10548 #elif defined(TARGET_CLONE_BACKWARDS2) 10549 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 10550 #else 10551 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 10552 #endif 10553 return ret; 10554 #ifdef __NR_exit_group 10555 /* new thread calls */ 10556 case TARGET_NR_exit_group: 10557 preexit_cleanup(cpu_env, arg1); 10558 return get_errno(exit_group(arg1)); 10559 #endif 10560 case TARGET_NR_setdomainname: 10561 if (!(p = lock_user_string(arg1))) 10562 return -TARGET_EFAULT; 10563 ret = get_errno(setdomainname(p, arg2)); 10564 unlock_user(p, arg1, 0); 10565 return ret; 10566 case TARGET_NR_uname: 10567 /* no need to transcode because we use the linux syscall */ 10568 { 10569 struct new_utsname * buf; 10570 10571 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 10572 return -TARGET_EFAULT; 10573 ret = get_errno(sys_uname(buf)); 10574 if (!is_error(ret)) { 10575 /* Overwrite the native machine name with whatever is being 10576 emulated. */ 10577 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 10578 sizeof(buf->machine)); 10579 /* Allow the user to override the reported release. */ 10580 if (qemu_uname_release && *qemu_uname_release) { 10581 g_strlcpy(buf->release, qemu_uname_release, 10582 sizeof(buf->release)); 10583 } 10584 } 10585 unlock_user_struct(buf, arg1, 1); 10586 } 10587 return ret; 10588 #ifdef TARGET_I386 10589 case TARGET_NR_modify_ldt: 10590 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 10591 #if !defined(TARGET_X86_64) 10592 case TARGET_NR_vm86: 10593 return do_vm86(cpu_env, arg1, arg2); 10594 #endif 10595 #endif 10596 #if defined(TARGET_NR_adjtimex) 10597 case TARGET_NR_adjtimex: 10598 { 10599 struct timex host_buf; 10600 10601 if (target_to_host_timex(&host_buf, arg1) != 0) { 10602 return -TARGET_EFAULT; 10603 } 10604 ret = get_errno(adjtimex(&host_buf)); 10605 if (!is_error(ret)) { 10606 if (host_to_target_timex(arg1, &host_buf) != 0) { 10607 return -TARGET_EFAULT; 10608 } 10609 } 10610 } 10611 return ret; 10612 #endif 10613 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 10614 case TARGET_NR_clock_adjtime: 10615 { 10616 struct timex htx, *phtx = &htx; 10617 10618 if (target_to_host_timex(phtx, arg2) != 0) { 10619 return -TARGET_EFAULT; 10620 } 10621 ret = get_errno(clock_adjtime(arg1, phtx)); 10622 if (!is_error(ret) && phtx) { 10623 if (host_to_target_timex(arg2, phtx) != 0) { 10624 return -TARGET_EFAULT; 10625 } 10626 } 10627 } 10628 return ret; 10629 #endif 10630 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 10631 case TARGET_NR_clock_adjtime64: 10632 { 10633 struct timex htx; 10634 10635 if (target_to_host_timex64(&htx, arg2) != 0) { 10636 return -TARGET_EFAULT; 10637 } 10638 ret = get_errno(clock_adjtime(arg1, &htx)); 10639 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 10640 return -TARGET_EFAULT; 10641 } 10642 } 10643 return ret; 10644 #endif 10645 case TARGET_NR_getpgid: 10646 return get_errno(getpgid(arg1)); 10647 case TARGET_NR_fchdir: 10648 return get_errno(fchdir(arg1)); 10649 case TARGET_NR_personality: 10650 return get_errno(personality(arg1)); 10651 #ifdef TARGET_NR__llseek /* Not on alpha */ 10652 case TARGET_NR__llseek: 10653 { 10654 int64_t res; 10655 #if !defined(__NR_llseek) 10656 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 10657 if (res == -1) { 10658 ret = get_errno(res); 10659 } else { 10660 ret = 0; 10661 } 10662 #else 10663 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 10664 #endif 10665 if ((ret == 0) && put_user_s64(res, arg4)) { 10666 return -TARGET_EFAULT; 10667 } 10668 } 10669 return ret; 10670 #endif 10671 #ifdef TARGET_NR_getdents 10672 case TARGET_NR_getdents: 10673 return do_getdents(arg1, arg2, arg3); 10674 #endif /* TARGET_NR_getdents */ 10675 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10676 case TARGET_NR_getdents64: 10677 return do_getdents64(arg1, arg2, arg3); 10678 #endif /* TARGET_NR_getdents64 */ 10679 #if defined(TARGET_NR__newselect) 10680 case TARGET_NR__newselect: 10681 return do_select(arg1, arg2, arg3, arg4, arg5); 10682 #endif 10683 #ifdef TARGET_NR_poll 10684 case TARGET_NR_poll: 10685 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 10686 #endif 10687 #ifdef TARGET_NR_ppoll 10688 case TARGET_NR_ppoll: 10689 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 10690 #endif 10691 #ifdef TARGET_NR_ppoll_time64 10692 case TARGET_NR_ppoll_time64: 10693 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 10694 #endif 10695 case TARGET_NR_flock: 10696 /* NOTE: the flock constant seems to be the same for every 10697 Linux platform */ 10698 return get_errno(safe_flock(arg1, arg2)); 10699 case TARGET_NR_readv: 10700 { 10701 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10702 if (vec != NULL) { 10703 ret = get_errno(safe_readv(arg1, vec, arg3)); 10704 unlock_iovec(vec, arg2, arg3, 1); 10705 } else { 10706 ret = -host_to_target_errno(errno); 10707 } 10708 } 10709 return ret; 10710 case TARGET_NR_writev: 10711 { 10712 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10713 if (vec != NULL) { 10714 ret = get_errno(safe_writev(arg1, vec, arg3)); 10715 unlock_iovec(vec, arg2, arg3, 0); 10716 } else { 10717 ret = -host_to_target_errno(errno); 10718 } 10719 } 10720 return ret; 10721 #if defined(TARGET_NR_preadv) 10722 case TARGET_NR_preadv: 10723 { 10724 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10725 if (vec != NULL) { 10726 unsigned long low, high; 10727 10728 target_to_host_low_high(arg4, arg5, &low, &high); 10729 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10730 unlock_iovec(vec, arg2, arg3, 1); 10731 } else { 10732 ret = -host_to_target_errno(errno); 10733 } 10734 } 10735 return ret; 10736 #endif 10737 #if defined(TARGET_NR_pwritev) 10738 case TARGET_NR_pwritev: 10739 { 10740 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10741 if (vec != NULL) { 10742 unsigned long low, high; 10743 10744 target_to_host_low_high(arg4, arg5, &low, &high); 10745 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10746 unlock_iovec(vec, arg2, arg3, 0); 10747 } else { 10748 ret = -host_to_target_errno(errno); 10749 } 10750 } 10751 return ret; 10752 #endif 10753 case TARGET_NR_getsid: 10754 return get_errno(getsid(arg1)); 10755 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10756 case TARGET_NR_fdatasync: 10757 return get_errno(fdatasync(arg1)); 10758 #endif 10759 case TARGET_NR_sched_getaffinity: 10760 { 10761 unsigned int mask_size; 10762 unsigned long *mask; 10763 10764 /* 10765 * sched_getaffinity needs multiples of ulong, so need to take 10766 * care of mismatches between target ulong and host ulong sizes. 10767 */ 10768 if (arg2 & (sizeof(abi_ulong) - 1)) { 10769 return -TARGET_EINVAL; 10770 } 10771 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10772 10773 mask = alloca(mask_size); 10774 memset(mask, 0, mask_size); 10775 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10776 10777 if (!is_error(ret)) { 10778 if (ret > arg2) { 10779 /* More data returned than the caller's buffer will fit. 10780 * This only happens if sizeof(abi_long) < sizeof(long) 10781 * and the caller passed us a buffer holding an odd number 10782 * of abi_longs. If the host kernel is actually using the 10783 * extra 4 bytes then fail EINVAL; otherwise we can just 10784 * ignore them and only copy the interesting part. 10785 */ 10786 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10787 if (numcpus > arg2 * 8) { 10788 return -TARGET_EINVAL; 10789 } 10790 ret = arg2; 10791 } 10792 10793 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10794 return -TARGET_EFAULT; 10795 } 10796 } 10797 } 10798 return ret; 10799 case TARGET_NR_sched_setaffinity: 10800 { 10801 unsigned int mask_size; 10802 unsigned long *mask; 10803 10804 /* 10805 * sched_setaffinity needs multiples of ulong, so need to take 10806 * care of mismatches between target ulong and host ulong sizes. 10807 */ 10808 if (arg2 & (sizeof(abi_ulong) - 1)) { 10809 return -TARGET_EINVAL; 10810 } 10811 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10812 mask = alloca(mask_size); 10813 10814 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10815 if (ret) { 10816 return ret; 10817 } 10818 10819 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10820 } 10821 case TARGET_NR_getcpu: 10822 { 10823 unsigned cpu, node; 10824 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10825 arg2 ? &node : NULL, 10826 NULL)); 10827 if (is_error(ret)) { 10828 return ret; 10829 } 10830 if (arg1 && put_user_u32(cpu, arg1)) { 10831 return -TARGET_EFAULT; 10832 } 10833 if (arg2 && put_user_u32(node, arg2)) { 10834 return -TARGET_EFAULT; 10835 } 10836 } 10837 return ret; 10838 case TARGET_NR_sched_setparam: 10839 { 10840 struct target_sched_param *target_schp; 10841 struct sched_param schp; 10842 10843 if (arg2 == 0) { 10844 return -TARGET_EINVAL; 10845 } 10846 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) { 10847 return -TARGET_EFAULT; 10848 } 10849 schp.sched_priority = tswap32(target_schp->sched_priority); 10850 unlock_user_struct(target_schp, arg2, 0); 10851 return get_errno(sys_sched_setparam(arg1, &schp)); 10852 } 10853 case TARGET_NR_sched_getparam: 10854 { 10855 struct target_sched_param *target_schp; 10856 struct sched_param schp; 10857 10858 if (arg2 == 0) { 10859 return -TARGET_EINVAL; 10860 } 10861 ret = get_errno(sys_sched_getparam(arg1, &schp)); 10862 if (!is_error(ret)) { 10863 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) { 10864 return -TARGET_EFAULT; 10865 } 10866 target_schp->sched_priority = tswap32(schp.sched_priority); 10867 unlock_user_struct(target_schp, arg2, 1); 10868 } 10869 } 10870 return ret; 10871 case TARGET_NR_sched_setscheduler: 10872 { 10873 struct target_sched_param *target_schp; 10874 struct sched_param schp; 10875 if (arg3 == 0) { 10876 return -TARGET_EINVAL; 10877 } 10878 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) { 10879 return -TARGET_EFAULT; 10880 } 10881 schp.sched_priority = tswap32(target_schp->sched_priority); 10882 unlock_user_struct(target_schp, arg3, 0); 10883 return get_errno(sys_sched_setscheduler(arg1, arg2, &schp)); 10884 } 10885 case TARGET_NR_sched_getscheduler: 10886 return get_errno(sys_sched_getscheduler(arg1)); 10887 case TARGET_NR_sched_getattr: 10888 { 10889 struct target_sched_attr *target_scha; 10890 struct sched_attr scha; 10891 if (arg2 == 0) { 10892 return -TARGET_EINVAL; 10893 } 10894 if (arg3 > sizeof(scha)) { 10895 arg3 = sizeof(scha); 10896 } 10897 ret = get_errno(sys_sched_getattr(arg1, &scha, arg3, arg4)); 10898 if (!is_error(ret)) { 10899 target_scha = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10900 if (!target_scha) { 10901 return -TARGET_EFAULT; 10902 } 10903 target_scha->size = tswap32(scha.size); 10904 target_scha->sched_policy = tswap32(scha.sched_policy); 10905 target_scha->sched_flags = tswap64(scha.sched_flags); 10906 target_scha->sched_nice = tswap32(scha.sched_nice); 10907 target_scha->sched_priority = tswap32(scha.sched_priority); 10908 target_scha->sched_runtime = tswap64(scha.sched_runtime); 10909 target_scha->sched_deadline = tswap64(scha.sched_deadline); 10910 target_scha->sched_period = tswap64(scha.sched_period); 10911 if (scha.size > offsetof(struct sched_attr, sched_util_min)) { 10912 target_scha->sched_util_min = tswap32(scha.sched_util_min); 10913 target_scha->sched_util_max = tswap32(scha.sched_util_max); 10914 } 10915 unlock_user(target_scha, arg2, arg3); 10916 } 10917 return ret; 10918 } 10919 case TARGET_NR_sched_setattr: 10920 { 10921 struct target_sched_attr *target_scha; 10922 struct sched_attr scha; 10923 uint32_t size; 10924 int zeroed; 10925 if (arg2 == 0) { 10926 return -TARGET_EINVAL; 10927 } 10928 if (get_user_u32(size, arg2)) { 10929 return -TARGET_EFAULT; 10930 } 10931 if (!size) { 10932 size = offsetof(struct target_sched_attr, sched_util_min); 10933 } 10934 if (size < offsetof(struct target_sched_attr, sched_util_min)) { 10935 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 10936 return -TARGET_EFAULT; 10937 } 10938 return -TARGET_E2BIG; 10939 } 10940 10941 zeroed = check_zeroed_user(arg2, sizeof(struct target_sched_attr), size); 10942 if (zeroed < 0) { 10943 return zeroed; 10944 } else if (zeroed == 0) { 10945 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 10946 return -TARGET_EFAULT; 10947 } 10948 return -TARGET_E2BIG; 10949 } 10950 if (size > sizeof(struct target_sched_attr)) { 10951 size = sizeof(struct target_sched_attr); 10952 } 10953 10954 target_scha = lock_user(VERIFY_READ, arg2, size, 1); 10955 if (!target_scha) { 10956 return -TARGET_EFAULT; 10957 } 10958 scha.size = size; 10959 scha.sched_policy = tswap32(target_scha->sched_policy); 10960 scha.sched_flags = tswap64(target_scha->sched_flags); 10961 scha.sched_nice = tswap32(target_scha->sched_nice); 10962 scha.sched_priority = tswap32(target_scha->sched_priority); 10963 scha.sched_runtime = tswap64(target_scha->sched_runtime); 10964 scha.sched_deadline = tswap64(target_scha->sched_deadline); 10965 scha.sched_period = tswap64(target_scha->sched_period); 10966 if (size > offsetof(struct target_sched_attr, sched_util_min)) { 10967 scha.sched_util_min = tswap32(target_scha->sched_util_min); 10968 scha.sched_util_max = tswap32(target_scha->sched_util_max); 10969 } 10970 unlock_user(target_scha, arg2, 0); 10971 return get_errno(sys_sched_setattr(arg1, &scha, arg3)); 10972 } 10973 case TARGET_NR_sched_yield: 10974 return get_errno(sched_yield()); 10975 case TARGET_NR_sched_get_priority_max: 10976 return get_errno(sched_get_priority_max(arg1)); 10977 case TARGET_NR_sched_get_priority_min: 10978 return get_errno(sched_get_priority_min(arg1)); 10979 #ifdef TARGET_NR_sched_rr_get_interval 10980 case TARGET_NR_sched_rr_get_interval: 10981 { 10982 struct timespec ts; 10983 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10984 if (!is_error(ret)) { 10985 ret = host_to_target_timespec(arg2, &ts); 10986 } 10987 } 10988 return ret; 10989 #endif 10990 #ifdef TARGET_NR_sched_rr_get_interval_time64 10991 case TARGET_NR_sched_rr_get_interval_time64: 10992 { 10993 struct timespec ts; 10994 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10995 if (!is_error(ret)) { 10996 ret = host_to_target_timespec64(arg2, &ts); 10997 } 10998 } 10999 return ret; 11000 #endif 11001 #if defined(TARGET_NR_nanosleep) 11002 case TARGET_NR_nanosleep: 11003 { 11004 struct timespec req, rem; 11005 target_to_host_timespec(&req, arg1); 11006 ret = get_errno(safe_nanosleep(&req, &rem)); 11007 if (is_error(ret) && arg2) { 11008 host_to_target_timespec(arg2, &rem); 11009 } 11010 } 11011 return ret; 11012 #endif 11013 case TARGET_NR_prctl: 11014 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5); 11015 break; 11016 #ifdef TARGET_NR_arch_prctl 11017 case TARGET_NR_arch_prctl: 11018 return do_arch_prctl(cpu_env, arg1, arg2); 11019 #endif 11020 #ifdef TARGET_NR_pread64 11021 case TARGET_NR_pread64: 11022 if (regpairs_aligned(cpu_env, num)) { 11023 arg4 = arg5; 11024 arg5 = arg6; 11025 } 11026 if (arg2 == 0 && arg3 == 0) { 11027 /* Special-case NULL buffer and zero length, which should succeed */ 11028 p = 0; 11029 } else { 11030 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11031 if (!p) { 11032 return -TARGET_EFAULT; 11033 } 11034 } 11035 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 11036 unlock_user(p, arg2, ret); 11037 return ret; 11038 case TARGET_NR_pwrite64: 11039 if (regpairs_aligned(cpu_env, num)) { 11040 arg4 = arg5; 11041 arg5 = arg6; 11042 } 11043 if (arg2 == 0 && arg3 == 0) { 11044 /* Special-case NULL buffer and zero length, which should succeed */ 11045 p = 0; 11046 } else { 11047 p = lock_user(VERIFY_READ, arg2, arg3, 1); 11048 if (!p) { 11049 return -TARGET_EFAULT; 11050 } 11051 } 11052 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 11053 unlock_user(p, arg2, 0); 11054 return ret; 11055 #endif 11056 case TARGET_NR_getcwd: 11057 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 11058 return -TARGET_EFAULT; 11059 ret = get_errno(sys_getcwd1(p, arg2)); 11060 unlock_user(p, arg1, ret); 11061 return ret; 11062 case TARGET_NR_capget: 11063 case TARGET_NR_capset: 11064 { 11065 struct target_user_cap_header *target_header; 11066 struct target_user_cap_data *target_data = NULL; 11067 struct __user_cap_header_struct header; 11068 struct __user_cap_data_struct data[2]; 11069 struct __user_cap_data_struct *dataptr = NULL; 11070 int i, target_datalen; 11071 int data_items = 1; 11072 11073 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 11074 return -TARGET_EFAULT; 11075 } 11076 header.version = tswap32(target_header->version); 11077 header.pid = tswap32(target_header->pid); 11078 11079 if (header.version != _LINUX_CAPABILITY_VERSION) { 11080 /* Version 2 and up takes pointer to two user_data structs */ 11081 data_items = 2; 11082 } 11083 11084 target_datalen = sizeof(*target_data) * data_items; 11085 11086 if (arg2) { 11087 if (num == TARGET_NR_capget) { 11088 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 11089 } else { 11090 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 11091 } 11092 if (!target_data) { 11093 unlock_user_struct(target_header, arg1, 0); 11094 return -TARGET_EFAULT; 11095 } 11096 11097 if (num == TARGET_NR_capset) { 11098 for (i = 0; i < data_items; i++) { 11099 data[i].effective = tswap32(target_data[i].effective); 11100 data[i].permitted = tswap32(target_data[i].permitted); 11101 data[i].inheritable = tswap32(target_data[i].inheritable); 11102 } 11103 } 11104 11105 dataptr = data; 11106 } 11107 11108 if (num == TARGET_NR_capget) { 11109 ret = get_errno(capget(&header, dataptr)); 11110 } else { 11111 ret = get_errno(capset(&header, dataptr)); 11112 } 11113 11114 /* The kernel always updates version for both capget and capset */ 11115 target_header->version = tswap32(header.version); 11116 unlock_user_struct(target_header, arg1, 1); 11117 11118 if (arg2) { 11119 if (num == TARGET_NR_capget) { 11120 for (i = 0; i < data_items; i++) { 11121 target_data[i].effective = tswap32(data[i].effective); 11122 target_data[i].permitted = tswap32(data[i].permitted); 11123 target_data[i].inheritable = tswap32(data[i].inheritable); 11124 } 11125 unlock_user(target_data, arg2, target_datalen); 11126 } else { 11127 unlock_user(target_data, arg2, 0); 11128 } 11129 } 11130 return ret; 11131 } 11132 case TARGET_NR_sigaltstack: 11133 return do_sigaltstack(arg1, arg2, cpu_env); 11134 11135 #ifdef CONFIG_SENDFILE 11136 #ifdef TARGET_NR_sendfile 11137 case TARGET_NR_sendfile: 11138 { 11139 off_t *offp = NULL; 11140 off_t off; 11141 if (arg3) { 11142 ret = get_user_sal(off, arg3); 11143 if (is_error(ret)) { 11144 return ret; 11145 } 11146 offp = &off; 11147 } 11148 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11149 if (!is_error(ret) && arg3) { 11150 abi_long ret2 = put_user_sal(off, arg3); 11151 if (is_error(ret2)) { 11152 ret = ret2; 11153 } 11154 } 11155 return ret; 11156 } 11157 #endif 11158 #ifdef TARGET_NR_sendfile64 11159 case TARGET_NR_sendfile64: 11160 { 11161 off_t *offp = NULL; 11162 off_t off; 11163 if (arg3) { 11164 ret = get_user_s64(off, arg3); 11165 if (is_error(ret)) { 11166 return ret; 11167 } 11168 offp = &off; 11169 } 11170 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11171 if (!is_error(ret) && arg3) { 11172 abi_long ret2 = put_user_s64(off, arg3); 11173 if (is_error(ret2)) { 11174 ret = ret2; 11175 } 11176 } 11177 return ret; 11178 } 11179 #endif 11180 #endif 11181 #ifdef TARGET_NR_vfork 11182 case TARGET_NR_vfork: 11183 return get_errno(do_fork(cpu_env, 11184 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 11185 0, 0, 0, 0)); 11186 #endif 11187 #ifdef TARGET_NR_ugetrlimit 11188 case TARGET_NR_ugetrlimit: 11189 { 11190 struct rlimit rlim; 11191 int resource = target_to_host_resource(arg1); 11192 ret = get_errno(getrlimit(resource, &rlim)); 11193 if (!is_error(ret)) { 11194 struct target_rlimit *target_rlim; 11195 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 11196 return -TARGET_EFAULT; 11197 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 11198 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 11199 unlock_user_struct(target_rlim, arg2, 1); 11200 } 11201 return ret; 11202 } 11203 #endif 11204 #ifdef TARGET_NR_truncate64 11205 case TARGET_NR_truncate64: 11206 if (!(p = lock_user_string(arg1))) 11207 return -TARGET_EFAULT; 11208 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 11209 unlock_user(p, arg1, 0); 11210 return ret; 11211 #endif 11212 #ifdef TARGET_NR_ftruncate64 11213 case TARGET_NR_ftruncate64: 11214 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 11215 #endif 11216 #ifdef TARGET_NR_stat64 11217 case TARGET_NR_stat64: 11218 if (!(p = lock_user_string(arg1))) { 11219 return -TARGET_EFAULT; 11220 } 11221 ret = get_errno(stat(path(p), &st)); 11222 unlock_user(p, arg1, 0); 11223 if (!is_error(ret)) 11224 ret = host_to_target_stat64(cpu_env, arg2, &st); 11225 return ret; 11226 #endif 11227 #ifdef TARGET_NR_lstat64 11228 case TARGET_NR_lstat64: 11229 if (!(p = lock_user_string(arg1))) { 11230 return -TARGET_EFAULT; 11231 } 11232 ret = get_errno(lstat(path(p), &st)); 11233 unlock_user(p, arg1, 0); 11234 if (!is_error(ret)) 11235 ret = host_to_target_stat64(cpu_env, arg2, &st); 11236 return ret; 11237 #endif 11238 #ifdef TARGET_NR_fstat64 11239 case TARGET_NR_fstat64: 11240 ret = get_errno(fstat(arg1, &st)); 11241 if (!is_error(ret)) 11242 ret = host_to_target_stat64(cpu_env, arg2, &st); 11243 return ret; 11244 #endif 11245 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11246 #ifdef TARGET_NR_fstatat64 11247 case TARGET_NR_fstatat64: 11248 #endif 11249 #ifdef TARGET_NR_newfstatat 11250 case TARGET_NR_newfstatat: 11251 #endif 11252 if (!(p = lock_user_string(arg2))) { 11253 return -TARGET_EFAULT; 11254 } 11255 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11256 unlock_user(p, arg2, 0); 11257 if (!is_error(ret)) 11258 ret = host_to_target_stat64(cpu_env, arg3, &st); 11259 return ret; 11260 #endif 11261 #if defined(TARGET_NR_statx) 11262 case TARGET_NR_statx: 11263 { 11264 struct target_statx *target_stx; 11265 int dirfd = arg1; 11266 int flags = arg3; 11267 11268 p = lock_user_string(arg2); 11269 if (p == NULL) { 11270 return -TARGET_EFAULT; 11271 } 11272 #if defined(__NR_statx) 11273 { 11274 /* 11275 * It is assumed that struct statx is architecture independent. 11276 */ 11277 struct target_statx host_stx; 11278 int mask = arg4; 11279 11280 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11281 if (!is_error(ret)) { 11282 if (host_to_target_statx(&host_stx, arg5) != 0) { 11283 unlock_user(p, arg2, 0); 11284 return -TARGET_EFAULT; 11285 } 11286 } 11287 11288 if (ret != -TARGET_ENOSYS) { 11289 unlock_user(p, arg2, 0); 11290 return ret; 11291 } 11292 } 11293 #endif 11294 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11295 unlock_user(p, arg2, 0); 11296 11297 if (!is_error(ret)) { 11298 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11299 return -TARGET_EFAULT; 11300 } 11301 memset(target_stx, 0, sizeof(*target_stx)); 11302 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11303 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11304 __put_user(st.st_ino, &target_stx->stx_ino); 11305 __put_user(st.st_mode, &target_stx->stx_mode); 11306 __put_user(st.st_uid, &target_stx->stx_uid); 11307 __put_user(st.st_gid, &target_stx->stx_gid); 11308 __put_user(st.st_nlink, &target_stx->stx_nlink); 11309 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11310 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11311 __put_user(st.st_size, &target_stx->stx_size); 11312 __put_user(st.st_blksize, &target_stx->stx_blksize); 11313 __put_user(st.st_blocks, &target_stx->stx_blocks); 11314 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11315 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11316 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11317 unlock_user_struct(target_stx, arg5, 1); 11318 } 11319 } 11320 return ret; 11321 #endif 11322 #ifdef TARGET_NR_lchown 11323 case TARGET_NR_lchown: 11324 if (!(p = lock_user_string(arg1))) 11325 return -TARGET_EFAULT; 11326 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11327 unlock_user(p, arg1, 0); 11328 return ret; 11329 #endif 11330 #ifdef TARGET_NR_getuid 11331 case TARGET_NR_getuid: 11332 return get_errno(high2lowuid(getuid())); 11333 #endif 11334 #ifdef TARGET_NR_getgid 11335 case TARGET_NR_getgid: 11336 return get_errno(high2lowgid(getgid())); 11337 #endif 11338 #ifdef TARGET_NR_geteuid 11339 case TARGET_NR_geteuid: 11340 return get_errno(high2lowuid(geteuid())); 11341 #endif 11342 #ifdef TARGET_NR_getegid 11343 case TARGET_NR_getegid: 11344 return get_errno(high2lowgid(getegid())); 11345 #endif 11346 case TARGET_NR_setreuid: 11347 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11348 case TARGET_NR_setregid: 11349 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11350 case TARGET_NR_getgroups: 11351 { 11352 int gidsetsize = arg1; 11353 target_id *target_grouplist; 11354 gid_t *grouplist; 11355 int i; 11356 11357 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11358 ret = get_errno(getgroups(gidsetsize, grouplist)); 11359 if (gidsetsize == 0) 11360 return ret; 11361 if (!is_error(ret)) { 11362 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 11363 if (!target_grouplist) 11364 return -TARGET_EFAULT; 11365 for(i = 0;i < ret; i++) 11366 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11367 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 11368 } 11369 } 11370 return ret; 11371 case TARGET_NR_setgroups: 11372 { 11373 int gidsetsize = arg1; 11374 target_id *target_grouplist; 11375 gid_t *grouplist = NULL; 11376 int i; 11377 if (gidsetsize) { 11378 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11379 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 11380 if (!target_grouplist) { 11381 return -TARGET_EFAULT; 11382 } 11383 for (i = 0; i < gidsetsize; i++) { 11384 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11385 } 11386 unlock_user(target_grouplist, arg2, 0); 11387 } 11388 return get_errno(setgroups(gidsetsize, grouplist)); 11389 } 11390 case TARGET_NR_fchown: 11391 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11392 #if defined(TARGET_NR_fchownat) 11393 case TARGET_NR_fchownat: 11394 if (!(p = lock_user_string(arg2))) 11395 return -TARGET_EFAULT; 11396 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11397 low2highgid(arg4), arg5)); 11398 unlock_user(p, arg2, 0); 11399 return ret; 11400 #endif 11401 #ifdef TARGET_NR_setresuid 11402 case TARGET_NR_setresuid: 11403 return get_errno(sys_setresuid(low2highuid(arg1), 11404 low2highuid(arg2), 11405 low2highuid(arg3))); 11406 #endif 11407 #ifdef TARGET_NR_getresuid 11408 case TARGET_NR_getresuid: 11409 { 11410 uid_t ruid, euid, suid; 11411 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11412 if (!is_error(ret)) { 11413 if (put_user_id(high2lowuid(ruid), arg1) 11414 || put_user_id(high2lowuid(euid), arg2) 11415 || put_user_id(high2lowuid(suid), arg3)) 11416 return -TARGET_EFAULT; 11417 } 11418 } 11419 return ret; 11420 #endif 11421 #ifdef TARGET_NR_getresgid 11422 case TARGET_NR_setresgid: 11423 return get_errno(sys_setresgid(low2highgid(arg1), 11424 low2highgid(arg2), 11425 low2highgid(arg3))); 11426 #endif 11427 #ifdef TARGET_NR_getresgid 11428 case TARGET_NR_getresgid: 11429 { 11430 gid_t rgid, egid, sgid; 11431 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11432 if (!is_error(ret)) { 11433 if (put_user_id(high2lowgid(rgid), arg1) 11434 || put_user_id(high2lowgid(egid), arg2) 11435 || put_user_id(high2lowgid(sgid), arg3)) 11436 return -TARGET_EFAULT; 11437 } 11438 } 11439 return ret; 11440 #endif 11441 #ifdef TARGET_NR_chown 11442 case TARGET_NR_chown: 11443 if (!(p = lock_user_string(arg1))) 11444 return -TARGET_EFAULT; 11445 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11446 unlock_user(p, arg1, 0); 11447 return ret; 11448 #endif 11449 case TARGET_NR_setuid: 11450 return get_errno(sys_setuid(low2highuid(arg1))); 11451 case TARGET_NR_setgid: 11452 return get_errno(sys_setgid(low2highgid(arg1))); 11453 case TARGET_NR_setfsuid: 11454 return get_errno(setfsuid(arg1)); 11455 case TARGET_NR_setfsgid: 11456 return get_errno(setfsgid(arg1)); 11457 11458 #ifdef TARGET_NR_lchown32 11459 case TARGET_NR_lchown32: 11460 if (!(p = lock_user_string(arg1))) 11461 return -TARGET_EFAULT; 11462 ret = get_errno(lchown(p, arg2, arg3)); 11463 unlock_user(p, arg1, 0); 11464 return ret; 11465 #endif 11466 #ifdef TARGET_NR_getuid32 11467 case TARGET_NR_getuid32: 11468 return get_errno(getuid()); 11469 #endif 11470 11471 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11472 /* Alpha specific */ 11473 case TARGET_NR_getxuid: 11474 { 11475 uid_t euid; 11476 euid=geteuid(); 11477 cpu_env->ir[IR_A4]=euid; 11478 } 11479 return get_errno(getuid()); 11480 #endif 11481 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11482 /* Alpha specific */ 11483 case TARGET_NR_getxgid: 11484 { 11485 uid_t egid; 11486 egid=getegid(); 11487 cpu_env->ir[IR_A4]=egid; 11488 } 11489 return get_errno(getgid()); 11490 #endif 11491 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11492 /* Alpha specific */ 11493 case TARGET_NR_osf_getsysinfo: 11494 ret = -TARGET_EOPNOTSUPP; 11495 switch (arg1) { 11496 case TARGET_GSI_IEEE_FP_CONTROL: 11497 { 11498 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11499 uint64_t swcr = cpu_env->swcr; 11500 11501 swcr &= ~SWCR_STATUS_MASK; 11502 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 11503 11504 if (put_user_u64 (swcr, arg2)) 11505 return -TARGET_EFAULT; 11506 ret = 0; 11507 } 11508 break; 11509 11510 /* case GSI_IEEE_STATE_AT_SIGNAL: 11511 -- Not implemented in linux kernel. 11512 case GSI_UACPROC: 11513 -- Retrieves current unaligned access state; not much used. 11514 case GSI_PROC_TYPE: 11515 -- Retrieves implver information; surely not used. 11516 case GSI_GET_HWRPB: 11517 -- Grabs a copy of the HWRPB; surely not used. 11518 */ 11519 } 11520 return ret; 11521 #endif 11522 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 11523 /* Alpha specific */ 11524 case TARGET_NR_osf_setsysinfo: 11525 ret = -TARGET_EOPNOTSUPP; 11526 switch (arg1) { 11527 case TARGET_SSI_IEEE_FP_CONTROL: 11528 { 11529 uint64_t swcr, fpcr; 11530 11531 if (get_user_u64 (swcr, arg2)) { 11532 return -TARGET_EFAULT; 11533 } 11534 11535 /* 11536 * The kernel calls swcr_update_status to update the 11537 * status bits from the fpcr at every point that it 11538 * could be queried. Therefore, we store the status 11539 * bits only in FPCR. 11540 */ 11541 cpu_env->swcr = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 11542 11543 fpcr = cpu_alpha_load_fpcr(cpu_env); 11544 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11545 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11546 cpu_alpha_store_fpcr(cpu_env, fpcr); 11547 ret = 0; 11548 } 11549 break; 11550 11551 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11552 { 11553 uint64_t exc, fpcr, fex; 11554 11555 if (get_user_u64(exc, arg2)) { 11556 return -TARGET_EFAULT; 11557 } 11558 exc &= SWCR_STATUS_MASK; 11559 fpcr = cpu_alpha_load_fpcr(cpu_env); 11560 11561 /* Old exceptions are not signaled. */ 11562 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11563 fex = exc & ~fex; 11564 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11565 fex &= (cpu_env)->swcr; 11566 11567 /* Update the hardware fpcr. */ 11568 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11569 cpu_alpha_store_fpcr(cpu_env, fpcr); 11570 11571 if (fex) { 11572 int si_code = TARGET_FPE_FLTUNK; 11573 target_siginfo_t info; 11574 11575 if (fex & SWCR_TRAP_ENABLE_DNO) { 11576 si_code = TARGET_FPE_FLTUND; 11577 } 11578 if (fex & SWCR_TRAP_ENABLE_INE) { 11579 si_code = TARGET_FPE_FLTRES; 11580 } 11581 if (fex & SWCR_TRAP_ENABLE_UNF) { 11582 si_code = TARGET_FPE_FLTUND; 11583 } 11584 if (fex & SWCR_TRAP_ENABLE_OVF) { 11585 si_code = TARGET_FPE_FLTOVF; 11586 } 11587 if (fex & SWCR_TRAP_ENABLE_DZE) { 11588 si_code = TARGET_FPE_FLTDIV; 11589 } 11590 if (fex & SWCR_TRAP_ENABLE_INV) { 11591 si_code = TARGET_FPE_FLTINV; 11592 } 11593 11594 info.si_signo = SIGFPE; 11595 info.si_errno = 0; 11596 info.si_code = si_code; 11597 info._sifields._sigfault._addr = (cpu_env)->pc; 11598 queue_signal(cpu_env, info.si_signo, 11599 QEMU_SI_FAULT, &info); 11600 } 11601 ret = 0; 11602 } 11603 break; 11604 11605 /* case SSI_NVPAIRS: 11606 -- Used with SSIN_UACPROC to enable unaligned accesses. 11607 case SSI_IEEE_STATE_AT_SIGNAL: 11608 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11609 -- Not implemented in linux kernel 11610 */ 11611 } 11612 return ret; 11613 #endif 11614 #ifdef TARGET_NR_osf_sigprocmask 11615 /* Alpha specific. */ 11616 case TARGET_NR_osf_sigprocmask: 11617 { 11618 abi_ulong mask; 11619 int how; 11620 sigset_t set, oldset; 11621 11622 switch(arg1) { 11623 case TARGET_SIG_BLOCK: 11624 how = SIG_BLOCK; 11625 break; 11626 case TARGET_SIG_UNBLOCK: 11627 how = SIG_UNBLOCK; 11628 break; 11629 case TARGET_SIG_SETMASK: 11630 how = SIG_SETMASK; 11631 break; 11632 default: 11633 return -TARGET_EINVAL; 11634 } 11635 mask = arg2; 11636 target_to_host_old_sigset(&set, &mask); 11637 ret = do_sigprocmask(how, &set, &oldset); 11638 if (!ret) { 11639 host_to_target_old_sigset(&mask, &oldset); 11640 ret = mask; 11641 } 11642 } 11643 return ret; 11644 #endif 11645 11646 #ifdef TARGET_NR_getgid32 11647 case TARGET_NR_getgid32: 11648 return get_errno(getgid()); 11649 #endif 11650 #ifdef TARGET_NR_geteuid32 11651 case TARGET_NR_geteuid32: 11652 return get_errno(geteuid()); 11653 #endif 11654 #ifdef TARGET_NR_getegid32 11655 case TARGET_NR_getegid32: 11656 return get_errno(getegid()); 11657 #endif 11658 #ifdef TARGET_NR_setreuid32 11659 case TARGET_NR_setreuid32: 11660 return get_errno(setreuid(arg1, arg2)); 11661 #endif 11662 #ifdef TARGET_NR_setregid32 11663 case TARGET_NR_setregid32: 11664 return get_errno(setregid(arg1, arg2)); 11665 #endif 11666 #ifdef TARGET_NR_getgroups32 11667 case TARGET_NR_getgroups32: 11668 { 11669 int gidsetsize = arg1; 11670 uint32_t *target_grouplist; 11671 gid_t *grouplist; 11672 int i; 11673 11674 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11675 ret = get_errno(getgroups(gidsetsize, grouplist)); 11676 if (gidsetsize == 0) 11677 return ret; 11678 if (!is_error(ret)) { 11679 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11680 if (!target_grouplist) { 11681 return -TARGET_EFAULT; 11682 } 11683 for(i = 0;i < ret; i++) 11684 target_grouplist[i] = tswap32(grouplist[i]); 11685 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11686 } 11687 } 11688 return ret; 11689 #endif 11690 #ifdef TARGET_NR_setgroups32 11691 case TARGET_NR_setgroups32: 11692 { 11693 int gidsetsize = arg1; 11694 uint32_t *target_grouplist; 11695 gid_t *grouplist; 11696 int i; 11697 11698 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11699 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11700 if (!target_grouplist) { 11701 return -TARGET_EFAULT; 11702 } 11703 for(i = 0;i < gidsetsize; i++) 11704 grouplist[i] = tswap32(target_grouplist[i]); 11705 unlock_user(target_grouplist, arg2, 0); 11706 return get_errno(setgroups(gidsetsize, grouplist)); 11707 } 11708 #endif 11709 #ifdef TARGET_NR_fchown32 11710 case TARGET_NR_fchown32: 11711 return get_errno(fchown(arg1, arg2, arg3)); 11712 #endif 11713 #ifdef TARGET_NR_setresuid32 11714 case TARGET_NR_setresuid32: 11715 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11716 #endif 11717 #ifdef TARGET_NR_getresuid32 11718 case TARGET_NR_getresuid32: 11719 { 11720 uid_t ruid, euid, suid; 11721 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11722 if (!is_error(ret)) { 11723 if (put_user_u32(ruid, arg1) 11724 || put_user_u32(euid, arg2) 11725 || put_user_u32(suid, arg3)) 11726 return -TARGET_EFAULT; 11727 } 11728 } 11729 return ret; 11730 #endif 11731 #ifdef TARGET_NR_setresgid32 11732 case TARGET_NR_setresgid32: 11733 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11734 #endif 11735 #ifdef TARGET_NR_getresgid32 11736 case TARGET_NR_getresgid32: 11737 { 11738 gid_t rgid, egid, sgid; 11739 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11740 if (!is_error(ret)) { 11741 if (put_user_u32(rgid, arg1) 11742 || put_user_u32(egid, arg2) 11743 || put_user_u32(sgid, arg3)) 11744 return -TARGET_EFAULT; 11745 } 11746 } 11747 return ret; 11748 #endif 11749 #ifdef TARGET_NR_chown32 11750 case TARGET_NR_chown32: 11751 if (!(p = lock_user_string(arg1))) 11752 return -TARGET_EFAULT; 11753 ret = get_errno(chown(p, arg2, arg3)); 11754 unlock_user(p, arg1, 0); 11755 return ret; 11756 #endif 11757 #ifdef TARGET_NR_setuid32 11758 case TARGET_NR_setuid32: 11759 return get_errno(sys_setuid(arg1)); 11760 #endif 11761 #ifdef TARGET_NR_setgid32 11762 case TARGET_NR_setgid32: 11763 return get_errno(sys_setgid(arg1)); 11764 #endif 11765 #ifdef TARGET_NR_setfsuid32 11766 case TARGET_NR_setfsuid32: 11767 return get_errno(setfsuid(arg1)); 11768 #endif 11769 #ifdef TARGET_NR_setfsgid32 11770 case TARGET_NR_setfsgid32: 11771 return get_errno(setfsgid(arg1)); 11772 #endif 11773 #ifdef TARGET_NR_mincore 11774 case TARGET_NR_mincore: 11775 { 11776 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11777 if (!a) { 11778 return -TARGET_ENOMEM; 11779 } 11780 p = lock_user_string(arg3); 11781 if (!p) { 11782 ret = -TARGET_EFAULT; 11783 } else { 11784 ret = get_errno(mincore(a, arg2, p)); 11785 unlock_user(p, arg3, ret); 11786 } 11787 unlock_user(a, arg1, 0); 11788 } 11789 return ret; 11790 #endif 11791 #ifdef TARGET_NR_arm_fadvise64_64 11792 case TARGET_NR_arm_fadvise64_64: 11793 /* arm_fadvise64_64 looks like fadvise64_64 but 11794 * with different argument order: fd, advice, offset, len 11795 * rather than the usual fd, offset, len, advice. 11796 * Note that offset and len are both 64-bit so appear as 11797 * pairs of 32-bit registers. 11798 */ 11799 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11800 target_offset64(arg5, arg6), arg2); 11801 return -host_to_target_errno(ret); 11802 #endif 11803 11804 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 11805 11806 #ifdef TARGET_NR_fadvise64_64 11807 case TARGET_NR_fadvise64_64: 11808 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11809 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11810 ret = arg2; 11811 arg2 = arg3; 11812 arg3 = arg4; 11813 arg4 = arg5; 11814 arg5 = arg6; 11815 arg6 = ret; 11816 #else 11817 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11818 if (regpairs_aligned(cpu_env, num)) { 11819 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11820 arg2 = arg3; 11821 arg3 = arg4; 11822 arg4 = arg5; 11823 arg5 = arg6; 11824 arg6 = arg7; 11825 } 11826 #endif 11827 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11828 target_offset64(arg4, arg5), arg6); 11829 return -host_to_target_errno(ret); 11830 #endif 11831 11832 #ifdef TARGET_NR_fadvise64 11833 case TARGET_NR_fadvise64: 11834 /* 5 args: fd, offset (high, low), len, advice */ 11835 if (regpairs_aligned(cpu_env, num)) { 11836 /* offset is in (3,4), len in 5 and advice in 6 */ 11837 arg2 = arg3; 11838 arg3 = arg4; 11839 arg4 = arg5; 11840 arg5 = arg6; 11841 } 11842 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11843 return -host_to_target_errno(ret); 11844 #endif 11845 11846 #else /* not a 32-bit ABI */ 11847 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11848 #ifdef TARGET_NR_fadvise64_64 11849 case TARGET_NR_fadvise64_64: 11850 #endif 11851 #ifdef TARGET_NR_fadvise64 11852 case TARGET_NR_fadvise64: 11853 #endif 11854 #ifdef TARGET_S390X 11855 switch (arg4) { 11856 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11857 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11858 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11859 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11860 default: break; 11861 } 11862 #endif 11863 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11864 #endif 11865 #endif /* end of 64-bit ABI fadvise handling */ 11866 11867 #ifdef TARGET_NR_madvise 11868 case TARGET_NR_madvise: 11869 return target_madvise(arg1, arg2, arg3); 11870 #endif 11871 #ifdef TARGET_NR_fcntl64 11872 case TARGET_NR_fcntl64: 11873 { 11874 int cmd; 11875 struct flock64 fl; 11876 from_flock64_fn *copyfrom = copy_from_user_flock64; 11877 to_flock64_fn *copyto = copy_to_user_flock64; 11878 11879 #ifdef TARGET_ARM 11880 if (!cpu_env->eabi) { 11881 copyfrom = copy_from_user_oabi_flock64; 11882 copyto = copy_to_user_oabi_flock64; 11883 } 11884 #endif 11885 11886 cmd = target_to_host_fcntl_cmd(arg2); 11887 if (cmd == -TARGET_EINVAL) { 11888 return cmd; 11889 } 11890 11891 switch(arg2) { 11892 case TARGET_F_GETLK64: 11893 ret = copyfrom(&fl, arg3); 11894 if (ret) { 11895 break; 11896 } 11897 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11898 if (ret == 0) { 11899 ret = copyto(arg3, &fl); 11900 } 11901 break; 11902 11903 case TARGET_F_SETLK64: 11904 case TARGET_F_SETLKW64: 11905 ret = copyfrom(&fl, arg3); 11906 if (ret) { 11907 break; 11908 } 11909 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11910 break; 11911 default: 11912 ret = do_fcntl(arg1, arg2, arg3); 11913 break; 11914 } 11915 return ret; 11916 } 11917 #endif 11918 #ifdef TARGET_NR_cacheflush 11919 case TARGET_NR_cacheflush: 11920 /* self-modifying code is handled automatically, so nothing needed */ 11921 return 0; 11922 #endif 11923 #ifdef TARGET_NR_getpagesize 11924 case TARGET_NR_getpagesize: 11925 return TARGET_PAGE_SIZE; 11926 #endif 11927 case TARGET_NR_gettid: 11928 return get_errno(sys_gettid()); 11929 #ifdef TARGET_NR_readahead 11930 case TARGET_NR_readahead: 11931 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 11932 if (regpairs_aligned(cpu_env, num)) { 11933 arg2 = arg3; 11934 arg3 = arg4; 11935 arg4 = arg5; 11936 } 11937 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11938 #else 11939 ret = get_errno(readahead(arg1, arg2, arg3)); 11940 #endif 11941 return ret; 11942 #endif 11943 #ifdef CONFIG_ATTR 11944 #ifdef TARGET_NR_setxattr 11945 case TARGET_NR_listxattr: 11946 case TARGET_NR_llistxattr: 11947 { 11948 void *p, *b = 0; 11949 if (arg2) { 11950 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11951 if (!b) { 11952 return -TARGET_EFAULT; 11953 } 11954 } 11955 p = lock_user_string(arg1); 11956 if (p) { 11957 if (num == TARGET_NR_listxattr) { 11958 ret = get_errno(listxattr(p, b, arg3)); 11959 } else { 11960 ret = get_errno(llistxattr(p, b, arg3)); 11961 } 11962 } else { 11963 ret = -TARGET_EFAULT; 11964 } 11965 unlock_user(p, arg1, 0); 11966 unlock_user(b, arg2, arg3); 11967 return ret; 11968 } 11969 case TARGET_NR_flistxattr: 11970 { 11971 void *b = 0; 11972 if (arg2) { 11973 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11974 if (!b) { 11975 return -TARGET_EFAULT; 11976 } 11977 } 11978 ret = get_errno(flistxattr(arg1, b, arg3)); 11979 unlock_user(b, arg2, arg3); 11980 return ret; 11981 } 11982 case TARGET_NR_setxattr: 11983 case TARGET_NR_lsetxattr: 11984 { 11985 void *p, *n, *v = 0; 11986 if (arg3) { 11987 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11988 if (!v) { 11989 return -TARGET_EFAULT; 11990 } 11991 } 11992 p = lock_user_string(arg1); 11993 n = lock_user_string(arg2); 11994 if (p && n) { 11995 if (num == TARGET_NR_setxattr) { 11996 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 11997 } else { 11998 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 11999 } 12000 } else { 12001 ret = -TARGET_EFAULT; 12002 } 12003 unlock_user(p, arg1, 0); 12004 unlock_user(n, arg2, 0); 12005 unlock_user(v, arg3, 0); 12006 } 12007 return ret; 12008 case TARGET_NR_fsetxattr: 12009 { 12010 void *n, *v = 0; 12011 if (arg3) { 12012 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12013 if (!v) { 12014 return -TARGET_EFAULT; 12015 } 12016 } 12017 n = lock_user_string(arg2); 12018 if (n) { 12019 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 12020 } else { 12021 ret = -TARGET_EFAULT; 12022 } 12023 unlock_user(n, arg2, 0); 12024 unlock_user(v, arg3, 0); 12025 } 12026 return ret; 12027 case TARGET_NR_getxattr: 12028 case TARGET_NR_lgetxattr: 12029 { 12030 void *p, *n, *v = 0; 12031 if (arg3) { 12032 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12033 if (!v) { 12034 return -TARGET_EFAULT; 12035 } 12036 } 12037 p = lock_user_string(arg1); 12038 n = lock_user_string(arg2); 12039 if (p && n) { 12040 if (num == TARGET_NR_getxattr) { 12041 ret = get_errno(getxattr(p, n, v, arg4)); 12042 } else { 12043 ret = get_errno(lgetxattr(p, n, v, arg4)); 12044 } 12045 } else { 12046 ret = -TARGET_EFAULT; 12047 } 12048 unlock_user(p, arg1, 0); 12049 unlock_user(n, arg2, 0); 12050 unlock_user(v, arg3, arg4); 12051 } 12052 return ret; 12053 case TARGET_NR_fgetxattr: 12054 { 12055 void *n, *v = 0; 12056 if (arg3) { 12057 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12058 if (!v) { 12059 return -TARGET_EFAULT; 12060 } 12061 } 12062 n = lock_user_string(arg2); 12063 if (n) { 12064 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 12065 } else { 12066 ret = -TARGET_EFAULT; 12067 } 12068 unlock_user(n, arg2, 0); 12069 unlock_user(v, arg3, arg4); 12070 } 12071 return ret; 12072 case TARGET_NR_removexattr: 12073 case TARGET_NR_lremovexattr: 12074 { 12075 void *p, *n; 12076 p = lock_user_string(arg1); 12077 n = lock_user_string(arg2); 12078 if (p && n) { 12079 if (num == TARGET_NR_removexattr) { 12080 ret = get_errno(removexattr(p, n)); 12081 } else { 12082 ret = get_errno(lremovexattr(p, n)); 12083 } 12084 } else { 12085 ret = -TARGET_EFAULT; 12086 } 12087 unlock_user(p, arg1, 0); 12088 unlock_user(n, arg2, 0); 12089 } 12090 return ret; 12091 case TARGET_NR_fremovexattr: 12092 { 12093 void *n; 12094 n = lock_user_string(arg2); 12095 if (n) { 12096 ret = get_errno(fremovexattr(arg1, n)); 12097 } else { 12098 ret = -TARGET_EFAULT; 12099 } 12100 unlock_user(n, arg2, 0); 12101 } 12102 return ret; 12103 #endif 12104 #endif /* CONFIG_ATTR */ 12105 #ifdef TARGET_NR_set_thread_area 12106 case TARGET_NR_set_thread_area: 12107 #if defined(TARGET_MIPS) 12108 cpu_env->active_tc.CP0_UserLocal = arg1; 12109 return 0; 12110 #elif defined(TARGET_CRIS) 12111 if (arg1 & 0xff) 12112 ret = -TARGET_EINVAL; 12113 else { 12114 cpu_env->pregs[PR_PID] = arg1; 12115 ret = 0; 12116 } 12117 return ret; 12118 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 12119 return do_set_thread_area(cpu_env, arg1); 12120 #elif defined(TARGET_M68K) 12121 { 12122 TaskState *ts = cpu->opaque; 12123 ts->tp_value = arg1; 12124 return 0; 12125 } 12126 #else 12127 return -TARGET_ENOSYS; 12128 #endif 12129 #endif 12130 #ifdef TARGET_NR_get_thread_area 12131 case TARGET_NR_get_thread_area: 12132 #if defined(TARGET_I386) && defined(TARGET_ABI32) 12133 return do_get_thread_area(cpu_env, arg1); 12134 #elif defined(TARGET_M68K) 12135 { 12136 TaskState *ts = cpu->opaque; 12137 return ts->tp_value; 12138 } 12139 #else 12140 return -TARGET_ENOSYS; 12141 #endif 12142 #endif 12143 #ifdef TARGET_NR_getdomainname 12144 case TARGET_NR_getdomainname: 12145 return -TARGET_ENOSYS; 12146 #endif 12147 12148 #ifdef TARGET_NR_clock_settime 12149 case TARGET_NR_clock_settime: 12150 { 12151 struct timespec ts; 12152 12153 ret = target_to_host_timespec(&ts, arg2); 12154 if (!is_error(ret)) { 12155 ret = get_errno(clock_settime(arg1, &ts)); 12156 } 12157 return ret; 12158 } 12159 #endif 12160 #ifdef TARGET_NR_clock_settime64 12161 case TARGET_NR_clock_settime64: 12162 { 12163 struct timespec ts; 12164 12165 ret = target_to_host_timespec64(&ts, arg2); 12166 if (!is_error(ret)) { 12167 ret = get_errno(clock_settime(arg1, &ts)); 12168 } 12169 return ret; 12170 } 12171 #endif 12172 #ifdef TARGET_NR_clock_gettime 12173 case TARGET_NR_clock_gettime: 12174 { 12175 struct timespec ts; 12176 ret = get_errno(clock_gettime(arg1, &ts)); 12177 if (!is_error(ret)) { 12178 ret = host_to_target_timespec(arg2, &ts); 12179 } 12180 return ret; 12181 } 12182 #endif 12183 #ifdef TARGET_NR_clock_gettime64 12184 case TARGET_NR_clock_gettime64: 12185 { 12186 struct timespec ts; 12187 ret = get_errno(clock_gettime(arg1, &ts)); 12188 if (!is_error(ret)) { 12189 ret = host_to_target_timespec64(arg2, &ts); 12190 } 12191 return ret; 12192 } 12193 #endif 12194 #ifdef TARGET_NR_clock_getres 12195 case TARGET_NR_clock_getres: 12196 { 12197 struct timespec ts; 12198 ret = get_errno(clock_getres(arg1, &ts)); 12199 if (!is_error(ret)) { 12200 host_to_target_timespec(arg2, &ts); 12201 } 12202 return ret; 12203 } 12204 #endif 12205 #ifdef TARGET_NR_clock_getres_time64 12206 case TARGET_NR_clock_getres_time64: 12207 { 12208 struct timespec ts; 12209 ret = get_errno(clock_getres(arg1, &ts)); 12210 if (!is_error(ret)) { 12211 host_to_target_timespec64(arg2, &ts); 12212 } 12213 return ret; 12214 } 12215 #endif 12216 #ifdef TARGET_NR_clock_nanosleep 12217 case TARGET_NR_clock_nanosleep: 12218 { 12219 struct timespec ts; 12220 if (target_to_host_timespec(&ts, arg3)) { 12221 return -TARGET_EFAULT; 12222 } 12223 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12224 &ts, arg4 ? &ts : NULL)); 12225 /* 12226 * if the call is interrupted by a signal handler, it fails 12227 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12228 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12229 */ 12230 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12231 host_to_target_timespec(arg4, &ts)) { 12232 return -TARGET_EFAULT; 12233 } 12234 12235 return ret; 12236 } 12237 #endif 12238 #ifdef TARGET_NR_clock_nanosleep_time64 12239 case TARGET_NR_clock_nanosleep_time64: 12240 { 12241 struct timespec ts; 12242 12243 if (target_to_host_timespec64(&ts, arg3)) { 12244 return -TARGET_EFAULT; 12245 } 12246 12247 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12248 &ts, arg4 ? &ts : NULL)); 12249 12250 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12251 host_to_target_timespec64(arg4, &ts)) { 12252 return -TARGET_EFAULT; 12253 } 12254 return ret; 12255 } 12256 #endif 12257 12258 #if defined(TARGET_NR_set_tid_address) 12259 case TARGET_NR_set_tid_address: 12260 { 12261 TaskState *ts = cpu->opaque; 12262 ts->child_tidptr = arg1; 12263 /* do not call host set_tid_address() syscall, instead return tid() */ 12264 return get_errno(sys_gettid()); 12265 } 12266 #endif 12267 12268 case TARGET_NR_tkill: 12269 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12270 12271 case TARGET_NR_tgkill: 12272 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12273 target_to_host_signal(arg3))); 12274 12275 #ifdef TARGET_NR_set_robust_list 12276 case TARGET_NR_set_robust_list: 12277 case TARGET_NR_get_robust_list: 12278 /* The ABI for supporting robust futexes has userspace pass 12279 * the kernel a pointer to a linked list which is updated by 12280 * userspace after the syscall; the list is walked by the kernel 12281 * when the thread exits. Since the linked list in QEMU guest 12282 * memory isn't a valid linked list for the host and we have 12283 * no way to reliably intercept the thread-death event, we can't 12284 * support these. Silently return ENOSYS so that guest userspace 12285 * falls back to a non-robust futex implementation (which should 12286 * be OK except in the corner case of the guest crashing while 12287 * holding a mutex that is shared with another process via 12288 * shared memory). 12289 */ 12290 return -TARGET_ENOSYS; 12291 #endif 12292 12293 #if defined(TARGET_NR_utimensat) 12294 case TARGET_NR_utimensat: 12295 { 12296 struct timespec *tsp, ts[2]; 12297 if (!arg3) { 12298 tsp = NULL; 12299 } else { 12300 if (target_to_host_timespec(ts, arg3)) { 12301 return -TARGET_EFAULT; 12302 } 12303 if (target_to_host_timespec(ts + 1, arg3 + 12304 sizeof(struct target_timespec))) { 12305 return -TARGET_EFAULT; 12306 } 12307 tsp = ts; 12308 } 12309 if (!arg2) 12310 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12311 else { 12312 if (!(p = lock_user_string(arg2))) { 12313 return -TARGET_EFAULT; 12314 } 12315 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12316 unlock_user(p, arg2, 0); 12317 } 12318 } 12319 return ret; 12320 #endif 12321 #ifdef TARGET_NR_utimensat_time64 12322 case TARGET_NR_utimensat_time64: 12323 { 12324 struct timespec *tsp, ts[2]; 12325 if (!arg3) { 12326 tsp = NULL; 12327 } else { 12328 if (target_to_host_timespec64(ts, arg3)) { 12329 return -TARGET_EFAULT; 12330 } 12331 if (target_to_host_timespec64(ts + 1, arg3 + 12332 sizeof(struct target__kernel_timespec))) { 12333 return -TARGET_EFAULT; 12334 } 12335 tsp = ts; 12336 } 12337 if (!arg2) 12338 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12339 else { 12340 p = lock_user_string(arg2); 12341 if (!p) { 12342 return -TARGET_EFAULT; 12343 } 12344 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12345 unlock_user(p, arg2, 0); 12346 } 12347 } 12348 return ret; 12349 #endif 12350 #ifdef TARGET_NR_futex 12351 case TARGET_NR_futex: 12352 return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6); 12353 #endif 12354 #ifdef TARGET_NR_futex_time64 12355 case TARGET_NR_futex_time64: 12356 return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6); 12357 #endif 12358 #ifdef CONFIG_INOTIFY 12359 #if defined(TARGET_NR_inotify_init) 12360 case TARGET_NR_inotify_init: 12361 ret = get_errno(inotify_init()); 12362 if (ret >= 0) { 12363 fd_trans_register(ret, &target_inotify_trans); 12364 } 12365 return ret; 12366 #endif 12367 #if defined(TARGET_NR_inotify_init1) && defined(CONFIG_INOTIFY1) 12368 case TARGET_NR_inotify_init1: 12369 ret = get_errno(inotify_init1(target_to_host_bitmask(arg1, 12370 fcntl_flags_tbl))); 12371 if (ret >= 0) { 12372 fd_trans_register(ret, &target_inotify_trans); 12373 } 12374 return ret; 12375 #endif 12376 #if defined(TARGET_NR_inotify_add_watch) 12377 case TARGET_NR_inotify_add_watch: 12378 p = lock_user_string(arg2); 12379 ret = get_errno(inotify_add_watch(arg1, path(p), arg3)); 12380 unlock_user(p, arg2, 0); 12381 return ret; 12382 #endif 12383 #if defined(TARGET_NR_inotify_rm_watch) 12384 case TARGET_NR_inotify_rm_watch: 12385 return get_errno(inotify_rm_watch(arg1, arg2)); 12386 #endif 12387 #endif 12388 12389 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12390 case TARGET_NR_mq_open: 12391 { 12392 struct mq_attr posix_mq_attr; 12393 struct mq_attr *pposix_mq_attr; 12394 int host_flags; 12395 12396 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12397 pposix_mq_attr = NULL; 12398 if (arg4) { 12399 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12400 return -TARGET_EFAULT; 12401 } 12402 pposix_mq_attr = &posix_mq_attr; 12403 } 12404 p = lock_user_string(arg1 - 1); 12405 if (!p) { 12406 return -TARGET_EFAULT; 12407 } 12408 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12409 unlock_user (p, arg1, 0); 12410 } 12411 return ret; 12412 12413 case TARGET_NR_mq_unlink: 12414 p = lock_user_string(arg1 - 1); 12415 if (!p) { 12416 return -TARGET_EFAULT; 12417 } 12418 ret = get_errno(mq_unlink(p)); 12419 unlock_user (p, arg1, 0); 12420 return ret; 12421 12422 #ifdef TARGET_NR_mq_timedsend 12423 case TARGET_NR_mq_timedsend: 12424 { 12425 struct timespec ts; 12426 12427 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12428 if (arg5 != 0) { 12429 if (target_to_host_timespec(&ts, arg5)) { 12430 return -TARGET_EFAULT; 12431 } 12432 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12433 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12434 return -TARGET_EFAULT; 12435 } 12436 } else { 12437 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12438 } 12439 unlock_user (p, arg2, arg3); 12440 } 12441 return ret; 12442 #endif 12443 #ifdef TARGET_NR_mq_timedsend_time64 12444 case TARGET_NR_mq_timedsend_time64: 12445 { 12446 struct timespec ts; 12447 12448 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12449 if (arg5 != 0) { 12450 if (target_to_host_timespec64(&ts, arg5)) { 12451 return -TARGET_EFAULT; 12452 } 12453 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12454 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12455 return -TARGET_EFAULT; 12456 } 12457 } else { 12458 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12459 } 12460 unlock_user(p, arg2, arg3); 12461 } 12462 return ret; 12463 #endif 12464 12465 #ifdef TARGET_NR_mq_timedreceive 12466 case TARGET_NR_mq_timedreceive: 12467 { 12468 struct timespec ts; 12469 unsigned int prio; 12470 12471 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12472 if (arg5 != 0) { 12473 if (target_to_host_timespec(&ts, arg5)) { 12474 return -TARGET_EFAULT; 12475 } 12476 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12477 &prio, &ts)); 12478 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12479 return -TARGET_EFAULT; 12480 } 12481 } else { 12482 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12483 &prio, NULL)); 12484 } 12485 unlock_user (p, arg2, arg3); 12486 if (arg4 != 0) 12487 put_user_u32(prio, arg4); 12488 } 12489 return ret; 12490 #endif 12491 #ifdef TARGET_NR_mq_timedreceive_time64 12492 case TARGET_NR_mq_timedreceive_time64: 12493 { 12494 struct timespec ts; 12495 unsigned int prio; 12496 12497 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12498 if (arg5 != 0) { 12499 if (target_to_host_timespec64(&ts, arg5)) { 12500 return -TARGET_EFAULT; 12501 } 12502 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12503 &prio, &ts)); 12504 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12505 return -TARGET_EFAULT; 12506 } 12507 } else { 12508 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12509 &prio, NULL)); 12510 } 12511 unlock_user(p, arg2, arg3); 12512 if (arg4 != 0) { 12513 put_user_u32(prio, arg4); 12514 } 12515 } 12516 return ret; 12517 #endif 12518 12519 /* Not implemented for now... */ 12520 /* case TARGET_NR_mq_notify: */ 12521 /* break; */ 12522 12523 case TARGET_NR_mq_getsetattr: 12524 { 12525 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 12526 ret = 0; 12527 if (arg2 != 0) { 12528 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 12529 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 12530 &posix_mq_attr_out)); 12531 } else if (arg3 != 0) { 12532 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 12533 } 12534 if (ret == 0 && arg3 != 0) { 12535 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 12536 } 12537 } 12538 return ret; 12539 #endif 12540 12541 #ifdef CONFIG_SPLICE 12542 #ifdef TARGET_NR_tee 12543 case TARGET_NR_tee: 12544 { 12545 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 12546 } 12547 return ret; 12548 #endif 12549 #ifdef TARGET_NR_splice 12550 case TARGET_NR_splice: 12551 { 12552 loff_t loff_in, loff_out; 12553 loff_t *ploff_in = NULL, *ploff_out = NULL; 12554 if (arg2) { 12555 if (get_user_u64(loff_in, arg2)) { 12556 return -TARGET_EFAULT; 12557 } 12558 ploff_in = &loff_in; 12559 } 12560 if (arg4) { 12561 if (get_user_u64(loff_out, arg4)) { 12562 return -TARGET_EFAULT; 12563 } 12564 ploff_out = &loff_out; 12565 } 12566 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 12567 if (arg2) { 12568 if (put_user_u64(loff_in, arg2)) { 12569 return -TARGET_EFAULT; 12570 } 12571 } 12572 if (arg4) { 12573 if (put_user_u64(loff_out, arg4)) { 12574 return -TARGET_EFAULT; 12575 } 12576 } 12577 } 12578 return ret; 12579 #endif 12580 #ifdef TARGET_NR_vmsplice 12581 case TARGET_NR_vmsplice: 12582 { 12583 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 12584 if (vec != NULL) { 12585 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 12586 unlock_iovec(vec, arg2, arg3, 0); 12587 } else { 12588 ret = -host_to_target_errno(errno); 12589 } 12590 } 12591 return ret; 12592 #endif 12593 #endif /* CONFIG_SPLICE */ 12594 #ifdef CONFIG_EVENTFD 12595 #if defined(TARGET_NR_eventfd) 12596 case TARGET_NR_eventfd: 12597 ret = get_errno(eventfd(arg1, 0)); 12598 if (ret >= 0) { 12599 fd_trans_register(ret, &target_eventfd_trans); 12600 } 12601 return ret; 12602 #endif 12603 #if defined(TARGET_NR_eventfd2) 12604 case TARGET_NR_eventfd2: 12605 { 12606 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 12607 if (arg2 & TARGET_O_NONBLOCK) { 12608 host_flags |= O_NONBLOCK; 12609 } 12610 if (arg2 & TARGET_O_CLOEXEC) { 12611 host_flags |= O_CLOEXEC; 12612 } 12613 ret = get_errno(eventfd(arg1, host_flags)); 12614 if (ret >= 0) { 12615 fd_trans_register(ret, &target_eventfd_trans); 12616 } 12617 return ret; 12618 } 12619 #endif 12620 #endif /* CONFIG_EVENTFD */ 12621 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 12622 case TARGET_NR_fallocate: 12623 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12624 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 12625 target_offset64(arg5, arg6))); 12626 #else 12627 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 12628 #endif 12629 return ret; 12630 #endif 12631 #if defined(CONFIG_SYNC_FILE_RANGE) 12632 #if defined(TARGET_NR_sync_file_range) 12633 case TARGET_NR_sync_file_range: 12634 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12635 #if defined(TARGET_MIPS) 12636 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12637 target_offset64(arg5, arg6), arg7)); 12638 #else 12639 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 12640 target_offset64(arg4, arg5), arg6)); 12641 #endif /* !TARGET_MIPS */ 12642 #else 12643 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 12644 #endif 12645 return ret; 12646 #endif 12647 #if defined(TARGET_NR_sync_file_range2) || \ 12648 defined(TARGET_NR_arm_sync_file_range) 12649 #if defined(TARGET_NR_sync_file_range2) 12650 case TARGET_NR_sync_file_range2: 12651 #endif 12652 #if defined(TARGET_NR_arm_sync_file_range) 12653 case TARGET_NR_arm_sync_file_range: 12654 #endif 12655 /* This is like sync_file_range but the arguments are reordered */ 12656 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12657 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12658 target_offset64(arg5, arg6), arg2)); 12659 #else 12660 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 12661 #endif 12662 return ret; 12663 #endif 12664 #endif 12665 #if defined(TARGET_NR_signalfd4) 12666 case TARGET_NR_signalfd4: 12667 return do_signalfd4(arg1, arg2, arg4); 12668 #endif 12669 #if defined(TARGET_NR_signalfd) 12670 case TARGET_NR_signalfd: 12671 return do_signalfd4(arg1, arg2, 0); 12672 #endif 12673 #if defined(CONFIG_EPOLL) 12674 #if defined(TARGET_NR_epoll_create) 12675 case TARGET_NR_epoll_create: 12676 return get_errno(epoll_create(arg1)); 12677 #endif 12678 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12679 case TARGET_NR_epoll_create1: 12680 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 12681 #endif 12682 #if defined(TARGET_NR_epoll_ctl) 12683 case TARGET_NR_epoll_ctl: 12684 { 12685 struct epoll_event ep; 12686 struct epoll_event *epp = 0; 12687 if (arg4) { 12688 if (arg2 != EPOLL_CTL_DEL) { 12689 struct target_epoll_event *target_ep; 12690 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12691 return -TARGET_EFAULT; 12692 } 12693 ep.events = tswap32(target_ep->events); 12694 /* 12695 * The epoll_data_t union is just opaque data to the kernel, 12696 * so we transfer all 64 bits across and need not worry what 12697 * actual data type it is. 12698 */ 12699 ep.data.u64 = tswap64(target_ep->data.u64); 12700 unlock_user_struct(target_ep, arg4, 0); 12701 } 12702 /* 12703 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 12704 * non-null pointer, even though this argument is ignored. 12705 * 12706 */ 12707 epp = &ep; 12708 } 12709 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12710 } 12711 #endif 12712 12713 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12714 #if defined(TARGET_NR_epoll_wait) 12715 case TARGET_NR_epoll_wait: 12716 #endif 12717 #if defined(TARGET_NR_epoll_pwait) 12718 case TARGET_NR_epoll_pwait: 12719 #endif 12720 { 12721 struct target_epoll_event *target_ep; 12722 struct epoll_event *ep; 12723 int epfd = arg1; 12724 int maxevents = arg3; 12725 int timeout = arg4; 12726 12727 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12728 return -TARGET_EINVAL; 12729 } 12730 12731 target_ep = lock_user(VERIFY_WRITE, arg2, 12732 maxevents * sizeof(struct target_epoll_event), 1); 12733 if (!target_ep) { 12734 return -TARGET_EFAULT; 12735 } 12736 12737 ep = g_try_new(struct epoll_event, maxevents); 12738 if (!ep) { 12739 unlock_user(target_ep, arg2, 0); 12740 return -TARGET_ENOMEM; 12741 } 12742 12743 switch (num) { 12744 #if defined(TARGET_NR_epoll_pwait) 12745 case TARGET_NR_epoll_pwait: 12746 { 12747 sigset_t *set = NULL; 12748 12749 if (arg5) { 12750 ret = process_sigsuspend_mask(&set, arg5, arg6); 12751 if (ret != 0) { 12752 break; 12753 } 12754 } 12755 12756 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12757 set, SIGSET_T_SIZE)); 12758 12759 if (set) { 12760 finish_sigsuspend_mask(ret); 12761 } 12762 break; 12763 } 12764 #endif 12765 #if defined(TARGET_NR_epoll_wait) 12766 case TARGET_NR_epoll_wait: 12767 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12768 NULL, 0)); 12769 break; 12770 #endif 12771 default: 12772 ret = -TARGET_ENOSYS; 12773 } 12774 if (!is_error(ret)) { 12775 int i; 12776 for (i = 0; i < ret; i++) { 12777 target_ep[i].events = tswap32(ep[i].events); 12778 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12779 } 12780 unlock_user(target_ep, arg2, 12781 ret * sizeof(struct target_epoll_event)); 12782 } else { 12783 unlock_user(target_ep, arg2, 0); 12784 } 12785 g_free(ep); 12786 return ret; 12787 } 12788 #endif 12789 #endif 12790 #ifdef TARGET_NR_prlimit64 12791 case TARGET_NR_prlimit64: 12792 { 12793 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12794 struct target_rlimit64 *target_rnew, *target_rold; 12795 struct host_rlimit64 rnew, rold, *rnewp = 0; 12796 int resource = target_to_host_resource(arg2); 12797 12798 if (arg3 && (resource != RLIMIT_AS && 12799 resource != RLIMIT_DATA && 12800 resource != RLIMIT_STACK)) { 12801 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12802 return -TARGET_EFAULT; 12803 } 12804 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12805 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12806 unlock_user_struct(target_rnew, arg3, 0); 12807 rnewp = &rnew; 12808 } 12809 12810 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12811 if (!is_error(ret) && arg4) { 12812 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12813 return -TARGET_EFAULT; 12814 } 12815 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12816 target_rold->rlim_max = tswap64(rold.rlim_max); 12817 unlock_user_struct(target_rold, arg4, 1); 12818 } 12819 return ret; 12820 } 12821 #endif 12822 #ifdef TARGET_NR_gethostname 12823 case TARGET_NR_gethostname: 12824 { 12825 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12826 if (name) { 12827 ret = get_errno(gethostname(name, arg2)); 12828 unlock_user(name, arg1, arg2); 12829 } else { 12830 ret = -TARGET_EFAULT; 12831 } 12832 return ret; 12833 } 12834 #endif 12835 #ifdef TARGET_NR_atomic_cmpxchg_32 12836 case TARGET_NR_atomic_cmpxchg_32: 12837 { 12838 /* should use start_exclusive from main.c */ 12839 abi_ulong mem_value; 12840 if (get_user_u32(mem_value, arg6)) { 12841 target_siginfo_t info; 12842 info.si_signo = SIGSEGV; 12843 info.si_errno = 0; 12844 info.si_code = TARGET_SEGV_MAPERR; 12845 info._sifields._sigfault._addr = arg6; 12846 queue_signal(cpu_env, info.si_signo, QEMU_SI_FAULT, &info); 12847 ret = 0xdeadbeef; 12848 12849 } 12850 if (mem_value == arg2) 12851 put_user_u32(arg1, arg6); 12852 return mem_value; 12853 } 12854 #endif 12855 #ifdef TARGET_NR_atomic_barrier 12856 case TARGET_NR_atomic_barrier: 12857 /* Like the kernel implementation and the 12858 qemu arm barrier, no-op this? */ 12859 return 0; 12860 #endif 12861 12862 #ifdef TARGET_NR_timer_create 12863 case TARGET_NR_timer_create: 12864 { 12865 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12866 12867 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12868 12869 int clkid = arg1; 12870 int timer_index = next_free_host_timer(); 12871 12872 if (timer_index < 0) { 12873 ret = -TARGET_EAGAIN; 12874 } else { 12875 timer_t *phtimer = g_posix_timers + timer_index; 12876 12877 if (arg2) { 12878 phost_sevp = &host_sevp; 12879 ret = target_to_host_sigevent(phost_sevp, arg2); 12880 if (ret != 0) { 12881 free_host_timer_slot(timer_index); 12882 return ret; 12883 } 12884 } 12885 12886 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12887 if (ret) { 12888 free_host_timer_slot(timer_index); 12889 } else { 12890 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12891 timer_delete(*phtimer); 12892 free_host_timer_slot(timer_index); 12893 return -TARGET_EFAULT; 12894 } 12895 } 12896 } 12897 return ret; 12898 } 12899 #endif 12900 12901 #ifdef TARGET_NR_timer_settime 12902 case TARGET_NR_timer_settime: 12903 { 12904 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12905 * struct itimerspec * old_value */ 12906 target_timer_t timerid = get_timer_id(arg1); 12907 12908 if (timerid < 0) { 12909 ret = timerid; 12910 } else if (arg3 == 0) { 12911 ret = -TARGET_EINVAL; 12912 } else { 12913 timer_t htimer = g_posix_timers[timerid]; 12914 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12915 12916 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12917 return -TARGET_EFAULT; 12918 } 12919 ret = get_errno( 12920 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12921 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12922 return -TARGET_EFAULT; 12923 } 12924 } 12925 return ret; 12926 } 12927 #endif 12928 12929 #ifdef TARGET_NR_timer_settime64 12930 case TARGET_NR_timer_settime64: 12931 { 12932 target_timer_t timerid = get_timer_id(arg1); 12933 12934 if (timerid < 0) { 12935 ret = timerid; 12936 } else if (arg3 == 0) { 12937 ret = -TARGET_EINVAL; 12938 } else { 12939 timer_t htimer = g_posix_timers[timerid]; 12940 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12941 12942 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 12943 return -TARGET_EFAULT; 12944 } 12945 ret = get_errno( 12946 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12947 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 12948 return -TARGET_EFAULT; 12949 } 12950 } 12951 return ret; 12952 } 12953 #endif 12954 12955 #ifdef TARGET_NR_timer_gettime 12956 case TARGET_NR_timer_gettime: 12957 { 12958 /* args: timer_t timerid, struct itimerspec *curr_value */ 12959 target_timer_t timerid = get_timer_id(arg1); 12960 12961 if (timerid < 0) { 12962 ret = timerid; 12963 } else if (!arg2) { 12964 ret = -TARGET_EFAULT; 12965 } else { 12966 timer_t htimer = g_posix_timers[timerid]; 12967 struct itimerspec hspec; 12968 ret = get_errno(timer_gettime(htimer, &hspec)); 12969 12970 if (host_to_target_itimerspec(arg2, &hspec)) { 12971 ret = -TARGET_EFAULT; 12972 } 12973 } 12974 return ret; 12975 } 12976 #endif 12977 12978 #ifdef TARGET_NR_timer_gettime64 12979 case TARGET_NR_timer_gettime64: 12980 { 12981 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 12982 target_timer_t timerid = get_timer_id(arg1); 12983 12984 if (timerid < 0) { 12985 ret = timerid; 12986 } else if (!arg2) { 12987 ret = -TARGET_EFAULT; 12988 } else { 12989 timer_t htimer = g_posix_timers[timerid]; 12990 struct itimerspec hspec; 12991 ret = get_errno(timer_gettime(htimer, &hspec)); 12992 12993 if (host_to_target_itimerspec64(arg2, &hspec)) { 12994 ret = -TARGET_EFAULT; 12995 } 12996 } 12997 return ret; 12998 } 12999 #endif 13000 13001 #ifdef TARGET_NR_timer_getoverrun 13002 case TARGET_NR_timer_getoverrun: 13003 { 13004 /* args: timer_t timerid */ 13005 target_timer_t timerid = get_timer_id(arg1); 13006 13007 if (timerid < 0) { 13008 ret = timerid; 13009 } else { 13010 timer_t htimer = g_posix_timers[timerid]; 13011 ret = get_errno(timer_getoverrun(htimer)); 13012 } 13013 return ret; 13014 } 13015 #endif 13016 13017 #ifdef TARGET_NR_timer_delete 13018 case TARGET_NR_timer_delete: 13019 { 13020 /* args: timer_t timerid */ 13021 target_timer_t timerid = get_timer_id(arg1); 13022 13023 if (timerid < 0) { 13024 ret = timerid; 13025 } else { 13026 timer_t htimer = g_posix_timers[timerid]; 13027 ret = get_errno(timer_delete(htimer)); 13028 free_host_timer_slot(timerid); 13029 } 13030 return ret; 13031 } 13032 #endif 13033 13034 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 13035 case TARGET_NR_timerfd_create: 13036 return get_errno(timerfd_create(arg1, 13037 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 13038 #endif 13039 13040 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 13041 case TARGET_NR_timerfd_gettime: 13042 { 13043 struct itimerspec its_curr; 13044 13045 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13046 13047 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 13048 return -TARGET_EFAULT; 13049 } 13050 } 13051 return ret; 13052 #endif 13053 13054 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 13055 case TARGET_NR_timerfd_gettime64: 13056 { 13057 struct itimerspec its_curr; 13058 13059 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13060 13061 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 13062 return -TARGET_EFAULT; 13063 } 13064 } 13065 return ret; 13066 #endif 13067 13068 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 13069 case TARGET_NR_timerfd_settime: 13070 { 13071 struct itimerspec its_new, its_old, *p_new; 13072 13073 if (arg3) { 13074 if (target_to_host_itimerspec(&its_new, arg3)) { 13075 return -TARGET_EFAULT; 13076 } 13077 p_new = &its_new; 13078 } else { 13079 p_new = NULL; 13080 } 13081 13082 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13083 13084 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 13085 return -TARGET_EFAULT; 13086 } 13087 } 13088 return ret; 13089 #endif 13090 13091 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 13092 case TARGET_NR_timerfd_settime64: 13093 { 13094 struct itimerspec its_new, its_old, *p_new; 13095 13096 if (arg3) { 13097 if (target_to_host_itimerspec64(&its_new, arg3)) { 13098 return -TARGET_EFAULT; 13099 } 13100 p_new = &its_new; 13101 } else { 13102 p_new = NULL; 13103 } 13104 13105 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13106 13107 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 13108 return -TARGET_EFAULT; 13109 } 13110 } 13111 return ret; 13112 #endif 13113 13114 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 13115 case TARGET_NR_ioprio_get: 13116 return get_errno(ioprio_get(arg1, arg2)); 13117 #endif 13118 13119 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 13120 case TARGET_NR_ioprio_set: 13121 return get_errno(ioprio_set(arg1, arg2, arg3)); 13122 #endif 13123 13124 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 13125 case TARGET_NR_setns: 13126 return get_errno(setns(arg1, arg2)); 13127 #endif 13128 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 13129 case TARGET_NR_unshare: 13130 return get_errno(unshare(arg1)); 13131 #endif 13132 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 13133 case TARGET_NR_kcmp: 13134 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 13135 #endif 13136 #ifdef TARGET_NR_swapcontext 13137 case TARGET_NR_swapcontext: 13138 /* PowerPC specific. */ 13139 return do_swapcontext(cpu_env, arg1, arg2, arg3); 13140 #endif 13141 #ifdef TARGET_NR_memfd_create 13142 case TARGET_NR_memfd_create: 13143 p = lock_user_string(arg1); 13144 if (!p) { 13145 return -TARGET_EFAULT; 13146 } 13147 ret = get_errno(memfd_create(p, arg2)); 13148 fd_trans_unregister(ret); 13149 unlock_user(p, arg1, 0); 13150 return ret; 13151 #endif 13152 #if defined TARGET_NR_membarrier && defined __NR_membarrier 13153 case TARGET_NR_membarrier: 13154 return get_errno(membarrier(arg1, arg2)); 13155 #endif 13156 13157 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 13158 case TARGET_NR_copy_file_range: 13159 { 13160 loff_t inoff, outoff; 13161 loff_t *pinoff = NULL, *poutoff = NULL; 13162 13163 if (arg2) { 13164 if (get_user_u64(inoff, arg2)) { 13165 return -TARGET_EFAULT; 13166 } 13167 pinoff = &inoff; 13168 } 13169 if (arg4) { 13170 if (get_user_u64(outoff, arg4)) { 13171 return -TARGET_EFAULT; 13172 } 13173 poutoff = &outoff; 13174 } 13175 /* Do not sign-extend the count parameter. */ 13176 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 13177 (abi_ulong)arg5, arg6)); 13178 if (!is_error(ret) && ret > 0) { 13179 if (arg2) { 13180 if (put_user_u64(inoff, arg2)) { 13181 return -TARGET_EFAULT; 13182 } 13183 } 13184 if (arg4) { 13185 if (put_user_u64(outoff, arg4)) { 13186 return -TARGET_EFAULT; 13187 } 13188 } 13189 } 13190 } 13191 return ret; 13192 #endif 13193 13194 #if defined(TARGET_NR_pivot_root) 13195 case TARGET_NR_pivot_root: 13196 { 13197 void *p2; 13198 p = lock_user_string(arg1); /* new_root */ 13199 p2 = lock_user_string(arg2); /* put_old */ 13200 if (!p || !p2) { 13201 ret = -TARGET_EFAULT; 13202 } else { 13203 ret = get_errno(pivot_root(p, p2)); 13204 } 13205 unlock_user(p2, arg2, 0); 13206 unlock_user(p, arg1, 0); 13207 } 13208 return ret; 13209 #endif 13210 13211 default: 13212 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 13213 return -TARGET_ENOSYS; 13214 } 13215 return ret; 13216 } 13217 13218 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1, 13219 abi_long arg2, abi_long arg3, abi_long arg4, 13220 abi_long arg5, abi_long arg6, abi_long arg7, 13221 abi_long arg8) 13222 { 13223 CPUState *cpu = env_cpu(cpu_env); 13224 abi_long ret; 13225 13226 #ifdef DEBUG_ERESTARTSYS 13227 /* Debug-only code for exercising the syscall-restart code paths 13228 * in the per-architecture cpu main loops: restart every syscall 13229 * the guest makes once before letting it through. 13230 */ 13231 { 13232 static bool flag; 13233 flag = !flag; 13234 if (flag) { 13235 return -QEMU_ERESTARTSYS; 13236 } 13237 } 13238 #endif 13239 13240 record_syscall_start(cpu, num, arg1, 13241 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13242 13243 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13244 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13245 } 13246 13247 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13248 arg5, arg6, arg7, arg8); 13249 13250 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13251 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13252 arg3, arg4, arg5, arg6); 13253 } 13254 13255 record_syscall_return(cpu, num, ret); 13256 return ret; 13257 } 13258