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 #include <linux/fs.h> 99 #include <linux/fd.h> 100 #if defined(CONFIG_FIEMAP) 101 #include <linux/fiemap.h> 102 #endif 103 #include <linux/fb.h> 104 #if defined(CONFIG_USBFS) 105 #include <linux/usbdevice_fs.h> 106 #include <linux/usb/ch9.h> 107 #endif 108 #include <linux/vt.h> 109 #include <linux/dm-ioctl.h> 110 #include <linux/reboot.h> 111 #include <linux/route.h> 112 #include <linux/filter.h> 113 #include <linux/blkpg.h> 114 #include <netpacket/packet.h> 115 #include <linux/netlink.h> 116 #include <linux/if_alg.h> 117 #include <linux/rtc.h> 118 #include <sound/asound.h> 119 #ifdef HAVE_BTRFS_H 120 #include <linux/btrfs.h> 121 #endif 122 #ifdef HAVE_DRM_H 123 #include <libdrm/drm.h> 124 #include <libdrm/i915_drm.h> 125 #endif 126 #include "linux_loop.h" 127 #include "uname.h" 128 129 #include "qemu.h" 130 #include "qemu/guest-random.h" 131 #include "qemu/selfmap.h" 132 #include "user/syscall-trace.h" 133 #include "qapi/error.h" 134 #include "fd-trans.h" 135 #include "tcg/tcg.h" 136 137 #ifndef CLONE_IO 138 #define CLONE_IO 0x80000000 /* Clone io context */ 139 #endif 140 141 /* We can't directly call the host clone syscall, because this will 142 * badly confuse libc (breaking mutexes, for example). So we must 143 * divide clone flags into: 144 * * flag combinations that look like pthread_create() 145 * * flag combinations that look like fork() 146 * * flags we can implement within QEMU itself 147 * * flags we can't support and will return an error for 148 */ 149 /* For thread creation, all these flags must be present; for 150 * fork, none must be present. 151 */ 152 #define CLONE_THREAD_FLAGS \ 153 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 154 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 155 156 /* These flags are ignored: 157 * CLONE_DETACHED is now ignored by the kernel; 158 * CLONE_IO is just an optimisation hint to the I/O scheduler 159 */ 160 #define CLONE_IGNORED_FLAGS \ 161 (CLONE_DETACHED | CLONE_IO) 162 163 /* Flags for fork which we can implement within QEMU itself */ 164 #define CLONE_OPTIONAL_FORK_FLAGS \ 165 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 166 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 167 168 /* Flags for thread creation which we can implement within QEMU itself */ 169 #define CLONE_OPTIONAL_THREAD_FLAGS \ 170 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 171 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 172 173 #define CLONE_INVALID_FORK_FLAGS \ 174 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 175 176 #define CLONE_INVALID_THREAD_FLAGS \ 177 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 178 CLONE_IGNORED_FLAGS)) 179 180 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 181 * have almost all been allocated. We cannot support any of 182 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 183 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 184 * The checks against the invalid thread masks above will catch these. 185 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 186 */ 187 188 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 189 * once. This exercises the codepaths for restart. 190 */ 191 //#define DEBUG_ERESTARTSYS 192 193 //#include <linux/msdos_fs.h> 194 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) 195 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) 196 197 #undef _syscall0 198 #undef _syscall1 199 #undef _syscall2 200 #undef _syscall3 201 #undef _syscall4 202 #undef _syscall5 203 #undef _syscall6 204 205 #define _syscall0(type,name) \ 206 static type name (void) \ 207 { \ 208 return syscall(__NR_##name); \ 209 } 210 211 #define _syscall1(type,name,type1,arg1) \ 212 static type name (type1 arg1) \ 213 { \ 214 return syscall(__NR_##name, arg1); \ 215 } 216 217 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 218 static type name (type1 arg1,type2 arg2) \ 219 { \ 220 return syscall(__NR_##name, arg1, arg2); \ 221 } 222 223 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 224 static type name (type1 arg1,type2 arg2,type3 arg3) \ 225 { \ 226 return syscall(__NR_##name, arg1, arg2, arg3); \ 227 } 228 229 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 230 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 231 { \ 232 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 233 } 234 235 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 236 type5,arg5) \ 237 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 238 { \ 239 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 240 } 241 242 243 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 244 type5,arg5,type6,arg6) \ 245 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 246 type6 arg6) \ 247 { \ 248 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 249 } 250 251 252 #define __NR_sys_uname __NR_uname 253 #define __NR_sys_getcwd1 __NR_getcwd 254 #define __NR_sys_getdents __NR_getdents 255 #define __NR_sys_getdents64 __NR_getdents64 256 #define __NR_sys_getpriority __NR_getpriority 257 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 258 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 259 #define __NR_sys_syslog __NR_syslog 260 #if defined(__NR_futex) 261 # define __NR_sys_futex __NR_futex 262 #endif 263 #if defined(__NR_futex_time64) 264 # define __NR_sys_futex_time64 __NR_futex_time64 265 #endif 266 #define __NR_sys_inotify_init __NR_inotify_init 267 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch 268 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch 269 #define __NR_sys_statx __NR_statx 270 271 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__) 272 #define __NR__llseek __NR_lseek 273 #endif 274 275 /* Newer kernel ports have llseek() instead of _llseek() */ 276 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 277 #define TARGET_NR__llseek TARGET_NR_llseek 278 #endif 279 280 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */ 281 #ifndef TARGET_O_NONBLOCK_MASK 282 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK 283 #endif 284 285 #define __NR_sys_gettid __NR_gettid 286 _syscall0(int, sys_gettid) 287 288 /* For the 64-bit guest on 32-bit host case we must emulate 289 * getdents using getdents64, because otherwise the host 290 * might hand us back more dirent records than we can fit 291 * into the guest buffer after structure format conversion. 292 * Otherwise we emulate getdents with getdents if the host has it. 293 */ 294 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS 295 #define EMULATE_GETDENTS_WITH_GETDENTS 296 #endif 297 298 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS) 299 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 300 #endif 301 #if (defined(TARGET_NR_getdents) && \ 302 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \ 303 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 304 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 305 #endif 306 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 307 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 308 loff_t *, res, uint, wh); 309 #endif 310 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 311 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 312 siginfo_t *, uinfo) 313 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 314 #ifdef __NR_exit_group 315 _syscall1(int,exit_group,int,error_code) 316 #endif 317 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 318 _syscall1(int,set_tid_address,int *,tidptr) 319 #endif 320 #if defined(__NR_futex) 321 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 322 const struct timespec *,timeout,int *,uaddr2,int,val3) 323 #endif 324 #if defined(__NR_futex_time64) 325 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, 326 const struct timespec *,timeout,int *,uaddr2,int,val3) 327 #endif 328 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 329 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 330 unsigned long *, user_mask_ptr); 331 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 332 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 333 unsigned long *, user_mask_ptr); 334 #define __NR_sys_getcpu __NR_getcpu 335 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); 336 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 337 void *, arg); 338 _syscall2(int, capget, struct __user_cap_header_struct *, header, 339 struct __user_cap_data_struct *, data); 340 _syscall2(int, capset, struct __user_cap_header_struct *, header, 341 struct __user_cap_data_struct *, data); 342 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 343 _syscall2(int, ioprio_get, int, which, int, who) 344 #endif 345 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 346 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 347 #endif 348 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 349 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 350 #endif 351 352 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 353 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 354 unsigned long, idx1, unsigned long, idx2) 355 #endif 356 357 /* 358 * It is assumed that struct statx is architecture independent. 359 */ 360 #if defined(TARGET_NR_statx) && defined(__NR_statx) 361 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags, 362 unsigned int, mask, struct target_statx *, statxbuf) 363 #endif 364 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) 365 _syscall2(int, membarrier, int, cmd, int, flags) 366 #endif 367 368 static bitmask_transtbl fcntl_flags_tbl[] = { 369 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 370 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 371 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 372 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 373 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 374 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 375 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 376 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 377 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 378 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 379 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 380 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 381 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 382 #if defined(O_DIRECT) 383 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 384 #endif 385 #if defined(O_NOATIME) 386 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 387 #endif 388 #if defined(O_CLOEXEC) 389 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 390 #endif 391 #if defined(O_PATH) 392 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 393 #endif 394 #if defined(O_TMPFILE) 395 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE }, 396 #endif 397 /* Don't terminate the list prematurely on 64-bit host+guest. */ 398 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 399 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 400 #endif 401 { 0, 0, 0, 0 } 402 }; 403 404 _syscall2(int, sys_getcwd1, char *, buf, size_t, size) 405 406 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64) 407 #if defined(__NR_utimensat) 408 #define __NR_sys_utimensat __NR_utimensat 409 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 410 const struct timespec *,tsp,int,flags) 411 #else 412 static int sys_utimensat(int dirfd, const char *pathname, 413 const struct timespec times[2], int flags) 414 { 415 errno = ENOSYS; 416 return -1; 417 } 418 #endif 419 #endif /* TARGET_NR_utimensat */ 420 421 #ifdef TARGET_NR_renameat2 422 #if defined(__NR_renameat2) 423 #define __NR_sys_renameat2 __NR_renameat2 424 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, 425 const char *, new, unsigned int, flags) 426 #else 427 static int sys_renameat2(int oldfd, const char *old, 428 int newfd, const char *new, int flags) 429 { 430 if (flags == 0) { 431 return renameat(oldfd, old, newfd, new); 432 } 433 errno = ENOSYS; 434 return -1; 435 } 436 #endif 437 #endif /* TARGET_NR_renameat2 */ 438 439 #ifdef CONFIG_INOTIFY 440 #include <sys/inotify.h> 441 442 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 443 static int sys_inotify_init(void) 444 { 445 return (inotify_init()); 446 } 447 #endif 448 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 449 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask) 450 { 451 return (inotify_add_watch(fd, pathname, mask)); 452 } 453 #endif 454 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 455 static int sys_inotify_rm_watch(int fd, int32_t wd) 456 { 457 return (inotify_rm_watch(fd, wd)); 458 } 459 #endif 460 #ifdef CONFIG_INOTIFY1 461 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 462 static int sys_inotify_init1(int flags) 463 { 464 return (inotify_init1(flags)); 465 } 466 #endif 467 #endif 468 #else 469 /* Userspace can usually survive runtime without inotify */ 470 #undef TARGET_NR_inotify_init 471 #undef TARGET_NR_inotify_init1 472 #undef TARGET_NR_inotify_add_watch 473 #undef TARGET_NR_inotify_rm_watch 474 #endif /* CONFIG_INOTIFY */ 475 476 #if defined(TARGET_NR_prlimit64) 477 #ifndef __NR_prlimit64 478 # define __NR_prlimit64 -1 479 #endif 480 #define __NR_sys_prlimit64 __NR_prlimit64 481 /* The glibc rlimit structure may not be that used by the underlying syscall */ 482 struct host_rlimit64 { 483 uint64_t rlim_cur; 484 uint64_t rlim_max; 485 }; 486 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 487 const struct host_rlimit64 *, new_limit, 488 struct host_rlimit64 *, old_limit) 489 #endif 490 491 492 #if defined(TARGET_NR_timer_create) 493 /* Maximum of 32 active POSIX timers allowed at any one time. */ 494 static timer_t g_posix_timers[32] = { 0, } ; 495 496 static inline int next_free_host_timer(void) 497 { 498 int k ; 499 /* FIXME: Does finding the next free slot require a lock? */ 500 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { 501 if (g_posix_timers[k] == 0) { 502 g_posix_timers[k] = (timer_t) 1; 503 return k; 504 } 505 } 506 return -1; 507 } 508 #endif 509 510 #define ERRNO_TABLE_SIZE 1200 511 512 /* target_to_host_errno_table[] is initialized from 513 * host_to_target_errno_table[] in syscall_init(). */ 514 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = { 515 }; 516 517 /* 518 * This list is the union of errno values overridden in asm-<arch>/errno.h 519 * minus the errnos that are not actually generic to all archs. 520 */ 521 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = { 522 [EAGAIN] = TARGET_EAGAIN, 523 [EIDRM] = TARGET_EIDRM, 524 [ECHRNG] = TARGET_ECHRNG, 525 [EL2NSYNC] = TARGET_EL2NSYNC, 526 [EL3HLT] = TARGET_EL3HLT, 527 [EL3RST] = TARGET_EL3RST, 528 [ELNRNG] = TARGET_ELNRNG, 529 [EUNATCH] = TARGET_EUNATCH, 530 [ENOCSI] = TARGET_ENOCSI, 531 [EL2HLT] = TARGET_EL2HLT, 532 [EDEADLK] = TARGET_EDEADLK, 533 [ENOLCK] = TARGET_ENOLCK, 534 [EBADE] = TARGET_EBADE, 535 [EBADR] = TARGET_EBADR, 536 [EXFULL] = TARGET_EXFULL, 537 [ENOANO] = TARGET_ENOANO, 538 [EBADRQC] = TARGET_EBADRQC, 539 [EBADSLT] = TARGET_EBADSLT, 540 [EBFONT] = TARGET_EBFONT, 541 [ENOSTR] = TARGET_ENOSTR, 542 [ENODATA] = TARGET_ENODATA, 543 [ETIME] = TARGET_ETIME, 544 [ENOSR] = TARGET_ENOSR, 545 [ENONET] = TARGET_ENONET, 546 [ENOPKG] = TARGET_ENOPKG, 547 [EREMOTE] = TARGET_EREMOTE, 548 [ENOLINK] = TARGET_ENOLINK, 549 [EADV] = TARGET_EADV, 550 [ESRMNT] = TARGET_ESRMNT, 551 [ECOMM] = TARGET_ECOMM, 552 [EPROTO] = TARGET_EPROTO, 553 [EDOTDOT] = TARGET_EDOTDOT, 554 [EMULTIHOP] = TARGET_EMULTIHOP, 555 [EBADMSG] = TARGET_EBADMSG, 556 [ENAMETOOLONG] = TARGET_ENAMETOOLONG, 557 [EOVERFLOW] = TARGET_EOVERFLOW, 558 [ENOTUNIQ] = TARGET_ENOTUNIQ, 559 [EBADFD] = TARGET_EBADFD, 560 [EREMCHG] = TARGET_EREMCHG, 561 [ELIBACC] = TARGET_ELIBACC, 562 [ELIBBAD] = TARGET_ELIBBAD, 563 [ELIBSCN] = TARGET_ELIBSCN, 564 [ELIBMAX] = TARGET_ELIBMAX, 565 [ELIBEXEC] = TARGET_ELIBEXEC, 566 [EILSEQ] = TARGET_EILSEQ, 567 [ENOSYS] = TARGET_ENOSYS, 568 [ELOOP] = TARGET_ELOOP, 569 [ERESTART] = TARGET_ERESTART, 570 [ESTRPIPE] = TARGET_ESTRPIPE, 571 [ENOTEMPTY] = TARGET_ENOTEMPTY, 572 [EUSERS] = TARGET_EUSERS, 573 [ENOTSOCK] = TARGET_ENOTSOCK, 574 [EDESTADDRREQ] = TARGET_EDESTADDRREQ, 575 [EMSGSIZE] = TARGET_EMSGSIZE, 576 [EPROTOTYPE] = TARGET_EPROTOTYPE, 577 [ENOPROTOOPT] = TARGET_ENOPROTOOPT, 578 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT, 579 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT, 580 [EOPNOTSUPP] = TARGET_EOPNOTSUPP, 581 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT, 582 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT, 583 [EADDRINUSE] = TARGET_EADDRINUSE, 584 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL, 585 [ENETDOWN] = TARGET_ENETDOWN, 586 [ENETUNREACH] = TARGET_ENETUNREACH, 587 [ENETRESET] = TARGET_ENETRESET, 588 [ECONNABORTED] = TARGET_ECONNABORTED, 589 [ECONNRESET] = TARGET_ECONNRESET, 590 [ENOBUFS] = TARGET_ENOBUFS, 591 [EISCONN] = TARGET_EISCONN, 592 [ENOTCONN] = TARGET_ENOTCONN, 593 [EUCLEAN] = TARGET_EUCLEAN, 594 [ENOTNAM] = TARGET_ENOTNAM, 595 [ENAVAIL] = TARGET_ENAVAIL, 596 [EISNAM] = TARGET_EISNAM, 597 [EREMOTEIO] = TARGET_EREMOTEIO, 598 [EDQUOT] = TARGET_EDQUOT, 599 [ESHUTDOWN] = TARGET_ESHUTDOWN, 600 [ETOOMANYREFS] = TARGET_ETOOMANYREFS, 601 [ETIMEDOUT] = TARGET_ETIMEDOUT, 602 [ECONNREFUSED] = TARGET_ECONNREFUSED, 603 [EHOSTDOWN] = TARGET_EHOSTDOWN, 604 [EHOSTUNREACH] = TARGET_EHOSTUNREACH, 605 [EALREADY] = TARGET_EALREADY, 606 [EINPROGRESS] = TARGET_EINPROGRESS, 607 [ESTALE] = TARGET_ESTALE, 608 [ECANCELED] = TARGET_ECANCELED, 609 [ENOMEDIUM] = TARGET_ENOMEDIUM, 610 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE, 611 #ifdef ENOKEY 612 [ENOKEY] = TARGET_ENOKEY, 613 #endif 614 #ifdef EKEYEXPIRED 615 [EKEYEXPIRED] = TARGET_EKEYEXPIRED, 616 #endif 617 #ifdef EKEYREVOKED 618 [EKEYREVOKED] = TARGET_EKEYREVOKED, 619 #endif 620 #ifdef EKEYREJECTED 621 [EKEYREJECTED] = TARGET_EKEYREJECTED, 622 #endif 623 #ifdef EOWNERDEAD 624 [EOWNERDEAD] = TARGET_EOWNERDEAD, 625 #endif 626 #ifdef ENOTRECOVERABLE 627 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE, 628 #endif 629 #ifdef ENOMSG 630 [ENOMSG] = TARGET_ENOMSG, 631 #endif 632 #ifdef ERKFILL 633 [ERFKILL] = TARGET_ERFKILL, 634 #endif 635 #ifdef EHWPOISON 636 [EHWPOISON] = TARGET_EHWPOISON, 637 #endif 638 }; 639 640 static inline int host_to_target_errno(int err) 641 { 642 if (err >= 0 && err < ERRNO_TABLE_SIZE && 643 host_to_target_errno_table[err]) { 644 return host_to_target_errno_table[err]; 645 } 646 return err; 647 } 648 649 static inline int target_to_host_errno(int err) 650 { 651 if (err >= 0 && err < ERRNO_TABLE_SIZE && 652 target_to_host_errno_table[err]) { 653 return target_to_host_errno_table[err]; 654 } 655 return err; 656 } 657 658 static inline abi_long get_errno(abi_long ret) 659 { 660 if (ret == -1) 661 return -host_to_target_errno(errno); 662 else 663 return ret; 664 } 665 666 const char *target_strerror(int err) 667 { 668 if (err == TARGET_ERESTARTSYS) { 669 return "To be restarted"; 670 } 671 if (err == TARGET_QEMU_ESIGRETURN) { 672 return "Successful exit from sigreturn"; 673 } 674 675 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { 676 return NULL; 677 } 678 return strerror(target_to_host_errno(err)); 679 } 680 681 #define safe_syscall0(type, name) \ 682 static type safe_##name(void) \ 683 { \ 684 return safe_syscall(__NR_##name); \ 685 } 686 687 #define safe_syscall1(type, name, type1, arg1) \ 688 static type safe_##name(type1 arg1) \ 689 { \ 690 return safe_syscall(__NR_##name, arg1); \ 691 } 692 693 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 694 static type safe_##name(type1 arg1, type2 arg2) \ 695 { \ 696 return safe_syscall(__NR_##name, arg1, arg2); \ 697 } 698 699 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 700 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 701 { \ 702 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 703 } 704 705 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 706 type4, arg4) \ 707 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 708 { \ 709 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 710 } 711 712 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 713 type4, arg4, type5, arg5) \ 714 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 715 type5 arg5) \ 716 { \ 717 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 718 } 719 720 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 721 type4, arg4, type5, arg5, type6, arg6) \ 722 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 723 type5 arg5, type6 arg6) \ 724 { \ 725 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 726 } 727 728 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 729 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 730 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 731 int, flags, mode_t, mode) 732 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) 733 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 734 struct rusage *, rusage) 735 #endif 736 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 737 int, options, struct rusage *, rusage) 738 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 739 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 740 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 741 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 742 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 743 #endif 744 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64) 745 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 746 struct timespec *, tsp, const sigset_t *, sigmask, 747 size_t, sigsetsize) 748 #endif 749 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 750 int, maxevents, int, timeout, const sigset_t *, sigmask, 751 size_t, sigsetsize) 752 #if defined(__NR_futex) 753 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 754 const struct timespec *,timeout,int *,uaddr2,int,val3) 755 #endif 756 #if defined(__NR_futex_time64) 757 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \ 758 const struct timespec *,timeout,int *,uaddr2,int,val3) 759 #endif 760 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 761 safe_syscall2(int, kill, pid_t, pid, int, sig) 762 safe_syscall2(int, tkill, int, tid, int, sig) 763 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 764 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 765 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 766 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 767 unsigned long, pos_l, unsigned long, pos_h) 768 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 769 unsigned long, pos_l, unsigned long, pos_h) 770 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 771 socklen_t, addrlen) 772 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 773 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 774 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 775 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 776 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 777 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 778 safe_syscall2(int, flock, int, fd, int, operation) 779 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64) 780 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 781 const struct timespec *, uts, size_t, sigsetsize) 782 #endif 783 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 784 int, flags) 785 #if defined(TARGET_NR_nanosleep) 786 safe_syscall2(int, nanosleep, const struct timespec *, req, 787 struct timespec *, rem) 788 #endif 789 #if defined(TARGET_NR_clock_nanosleep) || \ 790 defined(TARGET_NR_clock_nanosleep_time64) 791 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 792 const struct timespec *, req, struct timespec *, rem) 793 #endif 794 #ifdef __NR_ipc 795 #ifdef __s390x__ 796 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third, 797 void *, ptr) 798 #else 799 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 800 void *, ptr, long, fifth) 801 #endif 802 #endif 803 #ifdef __NR_msgsnd 804 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 805 int, flags) 806 #endif 807 #ifdef __NR_msgrcv 808 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 809 long, msgtype, int, flags) 810 #endif 811 #ifdef __NR_semtimedop 812 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 813 unsigned, nsops, const struct timespec *, timeout) 814 #endif 815 #if defined(TARGET_NR_mq_timedsend) || \ 816 defined(TARGET_NR_mq_timedsend_time64) 817 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 818 size_t, len, unsigned, prio, const struct timespec *, timeout) 819 #endif 820 #if defined(TARGET_NR_mq_timedreceive) || \ 821 defined(TARGET_NR_mq_timedreceive_time64) 822 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 823 size_t, len, unsigned *, prio, const struct timespec *, timeout) 824 #endif 825 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 826 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff, 827 int, outfd, loff_t *, poutoff, size_t, length, 828 unsigned int, flags) 829 #endif 830 831 /* We do ioctl like this rather than via safe_syscall3 to preserve the 832 * "third argument might be integer or pointer or not present" behaviour of 833 * the libc function. 834 */ 835 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 836 /* Similarly for fcntl. Note that callers must always: 837 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 838 * use the flock64 struct rather than unsuffixed flock 839 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 840 */ 841 #ifdef __NR_fcntl64 842 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 843 #else 844 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 845 #endif 846 847 static inline int host_to_target_sock_type(int host_type) 848 { 849 int target_type; 850 851 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 852 case SOCK_DGRAM: 853 target_type = TARGET_SOCK_DGRAM; 854 break; 855 case SOCK_STREAM: 856 target_type = TARGET_SOCK_STREAM; 857 break; 858 default: 859 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 860 break; 861 } 862 863 #if defined(SOCK_CLOEXEC) 864 if (host_type & SOCK_CLOEXEC) { 865 target_type |= TARGET_SOCK_CLOEXEC; 866 } 867 #endif 868 869 #if defined(SOCK_NONBLOCK) 870 if (host_type & SOCK_NONBLOCK) { 871 target_type |= TARGET_SOCK_NONBLOCK; 872 } 873 #endif 874 875 return target_type; 876 } 877 878 static abi_ulong target_brk; 879 static abi_ulong target_original_brk; 880 static abi_ulong brk_page; 881 882 void target_set_brk(abi_ulong new_brk) 883 { 884 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 885 brk_page = HOST_PAGE_ALIGN(target_brk); 886 } 887 888 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 889 #define DEBUGF_BRK(message, args...) 890 891 /* do_brk() must return target values and target errnos. */ 892 abi_long do_brk(abi_ulong new_brk) 893 { 894 abi_long mapped_addr; 895 abi_ulong new_alloc_size; 896 897 /* brk pointers are always untagged */ 898 899 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 900 901 if (!new_brk) { 902 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 903 return target_brk; 904 } 905 if (new_brk < target_original_brk) { 906 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 907 target_brk); 908 return target_brk; 909 } 910 911 /* If the new brk is less than the highest page reserved to the 912 * target heap allocation, set it and we're almost done... */ 913 if (new_brk <= brk_page) { 914 /* Heap contents are initialized to zero, as for anonymous 915 * mapped pages. */ 916 if (new_brk > target_brk) { 917 memset(g2h_untagged(target_brk), 0, new_brk - target_brk); 918 } 919 target_brk = new_brk; 920 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 921 return target_brk; 922 } 923 924 /* We need to allocate more memory after the brk... Note that 925 * we don't use MAP_FIXED because that will map over the top of 926 * any existing mapping (like the one with the host libc or qemu 927 * itself); instead we treat "mapped but at wrong address" as 928 * a failure and unmap again. 929 */ 930 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 931 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 932 PROT_READ|PROT_WRITE, 933 MAP_ANON|MAP_PRIVATE, 0, 0)); 934 935 if (mapped_addr == brk_page) { 936 /* Heap contents are initialized to zero, as for anonymous 937 * mapped pages. Technically the new pages are already 938 * initialized to zero since they *are* anonymous mapped 939 * pages, however we have to take care with the contents that 940 * come from the remaining part of the previous page: it may 941 * contains garbage data due to a previous heap usage (grown 942 * then shrunken). */ 943 memset(g2h_untagged(target_brk), 0, brk_page - target_brk); 944 945 target_brk = new_brk; 946 brk_page = HOST_PAGE_ALIGN(target_brk); 947 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 948 target_brk); 949 return target_brk; 950 } else if (mapped_addr != -1) { 951 /* Mapped but at wrong address, meaning there wasn't actually 952 * enough space for this brk. 953 */ 954 target_munmap(mapped_addr, new_alloc_size); 955 mapped_addr = -1; 956 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 957 } 958 else { 959 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 960 } 961 962 #if defined(TARGET_ALPHA) 963 /* We (partially) emulate OSF/1 on Alpha, which requires we 964 return a proper errno, not an unchanged brk value. */ 965 return -TARGET_ENOMEM; 966 #endif 967 /* For everything else, return the previous break. */ 968 return target_brk; 969 } 970 971 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 972 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 973 static inline abi_long copy_from_user_fdset(fd_set *fds, 974 abi_ulong target_fds_addr, 975 int n) 976 { 977 int i, nw, j, k; 978 abi_ulong b, *target_fds; 979 980 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 981 if (!(target_fds = lock_user(VERIFY_READ, 982 target_fds_addr, 983 sizeof(abi_ulong) * nw, 984 1))) 985 return -TARGET_EFAULT; 986 987 FD_ZERO(fds); 988 k = 0; 989 for (i = 0; i < nw; i++) { 990 /* grab the abi_ulong */ 991 __get_user(b, &target_fds[i]); 992 for (j = 0; j < TARGET_ABI_BITS; j++) { 993 /* check the bit inside the abi_ulong */ 994 if ((b >> j) & 1) 995 FD_SET(k, fds); 996 k++; 997 } 998 } 999 1000 unlock_user(target_fds, target_fds_addr, 0); 1001 1002 return 0; 1003 } 1004 1005 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 1006 abi_ulong target_fds_addr, 1007 int n) 1008 { 1009 if (target_fds_addr) { 1010 if (copy_from_user_fdset(fds, target_fds_addr, n)) 1011 return -TARGET_EFAULT; 1012 *fds_ptr = fds; 1013 } else { 1014 *fds_ptr = NULL; 1015 } 1016 return 0; 1017 } 1018 1019 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 1020 const fd_set *fds, 1021 int n) 1022 { 1023 int i, nw, j, k; 1024 abi_long v; 1025 abi_ulong *target_fds; 1026 1027 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 1028 if (!(target_fds = lock_user(VERIFY_WRITE, 1029 target_fds_addr, 1030 sizeof(abi_ulong) * nw, 1031 0))) 1032 return -TARGET_EFAULT; 1033 1034 k = 0; 1035 for (i = 0; i < nw; i++) { 1036 v = 0; 1037 for (j = 0; j < TARGET_ABI_BITS; j++) { 1038 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 1039 k++; 1040 } 1041 __put_user(v, &target_fds[i]); 1042 } 1043 1044 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 1045 1046 return 0; 1047 } 1048 #endif 1049 1050 #if defined(__alpha__) 1051 #define HOST_HZ 1024 1052 #else 1053 #define HOST_HZ 100 1054 #endif 1055 1056 static inline abi_long host_to_target_clock_t(long ticks) 1057 { 1058 #if HOST_HZ == TARGET_HZ 1059 return ticks; 1060 #else 1061 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 1062 #endif 1063 } 1064 1065 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 1066 const struct rusage *rusage) 1067 { 1068 struct target_rusage *target_rusage; 1069 1070 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 1071 return -TARGET_EFAULT; 1072 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 1073 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 1074 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 1075 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 1076 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 1077 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 1078 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 1079 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 1080 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 1081 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 1082 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 1083 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 1084 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 1085 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 1086 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 1087 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 1088 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 1089 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 1090 unlock_user_struct(target_rusage, target_addr, 1); 1091 1092 return 0; 1093 } 1094 1095 #ifdef TARGET_NR_setrlimit 1096 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 1097 { 1098 abi_ulong target_rlim_swap; 1099 rlim_t result; 1100 1101 target_rlim_swap = tswapal(target_rlim); 1102 if (target_rlim_swap == TARGET_RLIM_INFINITY) 1103 return RLIM_INFINITY; 1104 1105 result = target_rlim_swap; 1106 if (target_rlim_swap != (rlim_t)result) 1107 return RLIM_INFINITY; 1108 1109 return result; 1110 } 1111 #endif 1112 1113 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) 1114 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 1115 { 1116 abi_ulong target_rlim_swap; 1117 abi_ulong result; 1118 1119 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1120 target_rlim_swap = TARGET_RLIM_INFINITY; 1121 else 1122 target_rlim_swap = rlim; 1123 result = tswapal(target_rlim_swap); 1124 1125 return result; 1126 } 1127 #endif 1128 1129 static inline int target_to_host_resource(int code) 1130 { 1131 switch (code) { 1132 case TARGET_RLIMIT_AS: 1133 return RLIMIT_AS; 1134 case TARGET_RLIMIT_CORE: 1135 return RLIMIT_CORE; 1136 case TARGET_RLIMIT_CPU: 1137 return RLIMIT_CPU; 1138 case TARGET_RLIMIT_DATA: 1139 return RLIMIT_DATA; 1140 case TARGET_RLIMIT_FSIZE: 1141 return RLIMIT_FSIZE; 1142 case TARGET_RLIMIT_LOCKS: 1143 return RLIMIT_LOCKS; 1144 case TARGET_RLIMIT_MEMLOCK: 1145 return RLIMIT_MEMLOCK; 1146 case TARGET_RLIMIT_MSGQUEUE: 1147 return RLIMIT_MSGQUEUE; 1148 case TARGET_RLIMIT_NICE: 1149 return RLIMIT_NICE; 1150 case TARGET_RLIMIT_NOFILE: 1151 return RLIMIT_NOFILE; 1152 case TARGET_RLIMIT_NPROC: 1153 return RLIMIT_NPROC; 1154 case TARGET_RLIMIT_RSS: 1155 return RLIMIT_RSS; 1156 case TARGET_RLIMIT_RTPRIO: 1157 return RLIMIT_RTPRIO; 1158 case TARGET_RLIMIT_SIGPENDING: 1159 return RLIMIT_SIGPENDING; 1160 case TARGET_RLIMIT_STACK: 1161 return RLIMIT_STACK; 1162 default: 1163 return code; 1164 } 1165 } 1166 1167 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1168 abi_ulong target_tv_addr) 1169 { 1170 struct target_timeval *target_tv; 1171 1172 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1173 return -TARGET_EFAULT; 1174 } 1175 1176 __get_user(tv->tv_sec, &target_tv->tv_sec); 1177 __get_user(tv->tv_usec, &target_tv->tv_usec); 1178 1179 unlock_user_struct(target_tv, target_tv_addr, 0); 1180 1181 return 0; 1182 } 1183 1184 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1185 const struct timeval *tv) 1186 { 1187 struct target_timeval *target_tv; 1188 1189 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1190 return -TARGET_EFAULT; 1191 } 1192 1193 __put_user(tv->tv_sec, &target_tv->tv_sec); 1194 __put_user(tv->tv_usec, &target_tv->tv_usec); 1195 1196 unlock_user_struct(target_tv, target_tv_addr, 1); 1197 1198 return 0; 1199 } 1200 1201 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 1202 static inline abi_long copy_from_user_timeval64(struct timeval *tv, 1203 abi_ulong target_tv_addr) 1204 { 1205 struct target__kernel_sock_timeval *target_tv; 1206 1207 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1208 return -TARGET_EFAULT; 1209 } 1210 1211 __get_user(tv->tv_sec, &target_tv->tv_sec); 1212 __get_user(tv->tv_usec, &target_tv->tv_usec); 1213 1214 unlock_user_struct(target_tv, target_tv_addr, 0); 1215 1216 return 0; 1217 } 1218 #endif 1219 1220 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, 1221 const struct timeval *tv) 1222 { 1223 struct target__kernel_sock_timeval *target_tv; 1224 1225 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1226 return -TARGET_EFAULT; 1227 } 1228 1229 __put_user(tv->tv_sec, &target_tv->tv_sec); 1230 __put_user(tv->tv_usec, &target_tv->tv_usec); 1231 1232 unlock_user_struct(target_tv, target_tv_addr, 1); 1233 1234 return 0; 1235 } 1236 1237 #if defined(TARGET_NR_futex) || \ 1238 defined(TARGET_NR_rt_sigtimedwait) || \ 1239 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ 1240 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ 1241 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ 1242 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \ 1243 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \ 1244 defined(TARGET_NR_timer_settime) || \ 1245 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 1246 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 1247 abi_ulong target_addr) 1248 { 1249 struct target_timespec *target_ts; 1250 1251 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1252 return -TARGET_EFAULT; 1253 } 1254 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1255 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1256 unlock_user_struct(target_ts, target_addr, 0); 1257 return 0; 1258 } 1259 #endif 1260 1261 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \ 1262 defined(TARGET_NR_timer_settime64) || \ 1263 defined(TARGET_NR_mq_timedsend_time64) || \ 1264 defined(TARGET_NR_mq_timedreceive_time64) || \ 1265 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \ 1266 defined(TARGET_NR_clock_nanosleep_time64) || \ 1267 defined(TARGET_NR_rt_sigtimedwait_time64) || \ 1268 defined(TARGET_NR_utimensat) || \ 1269 defined(TARGET_NR_utimensat_time64) || \ 1270 defined(TARGET_NR_semtimedop_time64) || \ 1271 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64) 1272 static inline abi_long target_to_host_timespec64(struct timespec *host_ts, 1273 abi_ulong target_addr) 1274 { 1275 struct target__kernel_timespec *target_ts; 1276 1277 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1278 return -TARGET_EFAULT; 1279 } 1280 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1281 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1282 /* in 32bit mode, this drops the padding */ 1283 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec; 1284 unlock_user_struct(target_ts, target_addr, 0); 1285 return 0; 1286 } 1287 #endif 1288 1289 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 1290 struct timespec *host_ts) 1291 { 1292 struct target_timespec *target_ts; 1293 1294 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1295 return -TARGET_EFAULT; 1296 } 1297 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1298 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1299 unlock_user_struct(target_ts, target_addr, 1); 1300 return 0; 1301 } 1302 1303 static inline abi_long host_to_target_timespec64(abi_ulong target_addr, 1304 struct timespec *host_ts) 1305 { 1306 struct target__kernel_timespec *target_ts; 1307 1308 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1309 return -TARGET_EFAULT; 1310 } 1311 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1312 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1313 unlock_user_struct(target_ts, target_addr, 1); 1314 return 0; 1315 } 1316 1317 #if defined(TARGET_NR_gettimeofday) 1318 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, 1319 struct timezone *tz) 1320 { 1321 struct target_timezone *target_tz; 1322 1323 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) { 1324 return -TARGET_EFAULT; 1325 } 1326 1327 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1328 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1329 1330 unlock_user_struct(target_tz, target_tz_addr, 1); 1331 1332 return 0; 1333 } 1334 #endif 1335 1336 #if defined(TARGET_NR_settimeofday) 1337 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1338 abi_ulong target_tz_addr) 1339 { 1340 struct target_timezone *target_tz; 1341 1342 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1343 return -TARGET_EFAULT; 1344 } 1345 1346 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1347 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1348 1349 unlock_user_struct(target_tz, target_tz_addr, 0); 1350 1351 return 0; 1352 } 1353 #endif 1354 1355 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1356 #include <mqueue.h> 1357 1358 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1359 abi_ulong target_mq_attr_addr) 1360 { 1361 struct target_mq_attr *target_mq_attr; 1362 1363 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1364 target_mq_attr_addr, 1)) 1365 return -TARGET_EFAULT; 1366 1367 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1368 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1369 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1370 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1371 1372 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1373 1374 return 0; 1375 } 1376 1377 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1378 const struct mq_attr *attr) 1379 { 1380 struct target_mq_attr *target_mq_attr; 1381 1382 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1383 target_mq_attr_addr, 0)) 1384 return -TARGET_EFAULT; 1385 1386 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1387 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1388 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1389 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1390 1391 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1392 1393 return 0; 1394 } 1395 #endif 1396 1397 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1398 /* do_select() must return target values and target errnos. */ 1399 static abi_long do_select(int n, 1400 abi_ulong rfd_addr, abi_ulong wfd_addr, 1401 abi_ulong efd_addr, abi_ulong target_tv_addr) 1402 { 1403 fd_set rfds, wfds, efds; 1404 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1405 struct timeval tv; 1406 struct timespec ts, *ts_ptr; 1407 abi_long ret; 1408 1409 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1410 if (ret) { 1411 return ret; 1412 } 1413 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1414 if (ret) { 1415 return ret; 1416 } 1417 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1418 if (ret) { 1419 return ret; 1420 } 1421 1422 if (target_tv_addr) { 1423 if (copy_from_user_timeval(&tv, target_tv_addr)) 1424 return -TARGET_EFAULT; 1425 ts.tv_sec = tv.tv_sec; 1426 ts.tv_nsec = tv.tv_usec * 1000; 1427 ts_ptr = &ts; 1428 } else { 1429 ts_ptr = NULL; 1430 } 1431 1432 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1433 ts_ptr, NULL)); 1434 1435 if (!is_error(ret)) { 1436 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1437 return -TARGET_EFAULT; 1438 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1439 return -TARGET_EFAULT; 1440 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1441 return -TARGET_EFAULT; 1442 1443 if (target_tv_addr) { 1444 tv.tv_sec = ts.tv_sec; 1445 tv.tv_usec = ts.tv_nsec / 1000; 1446 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1447 return -TARGET_EFAULT; 1448 } 1449 } 1450 } 1451 1452 return ret; 1453 } 1454 1455 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1456 static abi_long do_old_select(abi_ulong arg1) 1457 { 1458 struct target_sel_arg_struct *sel; 1459 abi_ulong inp, outp, exp, tvp; 1460 long nsel; 1461 1462 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1463 return -TARGET_EFAULT; 1464 } 1465 1466 nsel = tswapal(sel->n); 1467 inp = tswapal(sel->inp); 1468 outp = tswapal(sel->outp); 1469 exp = tswapal(sel->exp); 1470 tvp = tswapal(sel->tvp); 1471 1472 unlock_user_struct(sel, arg1, 0); 1473 1474 return do_select(nsel, inp, outp, exp, tvp); 1475 } 1476 #endif 1477 #endif 1478 1479 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 1480 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3, 1481 abi_long arg4, abi_long arg5, abi_long arg6, 1482 bool time64) 1483 { 1484 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 1485 fd_set rfds, wfds, efds; 1486 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1487 struct timespec ts, *ts_ptr; 1488 abi_long ret; 1489 1490 /* 1491 * The 6th arg is actually two args smashed together, 1492 * so we cannot use the C library. 1493 */ 1494 sigset_t set; 1495 struct { 1496 sigset_t *set; 1497 size_t size; 1498 } sig, *sig_ptr; 1499 1500 abi_ulong arg_sigset, arg_sigsize, *arg7; 1501 target_sigset_t *target_sigset; 1502 1503 n = arg1; 1504 rfd_addr = arg2; 1505 wfd_addr = arg3; 1506 efd_addr = arg4; 1507 ts_addr = arg5; 1508 1509 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1510 if (ret) { 1511 return ret; 1512 } 1513 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1514 if (ret) { 1515 return ret; 1516 } 1517 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1518 if (ret) { 1519 return ret; 1520 } 1521 1522 /* 1523 * This takes a timespec, and not a timeval, so we cannot 1524 * use the do_select() helper ... 1525 */ 1526 if (ts_addr) { 1527 if (time64) { 1528 if (target_to_host_timespec64(&ts, ts_addr)) { 1529 return -TARGET_EFAULT; 1530 } 1531 } else { 1532 if (target_to_host_timespec(&ts, ts_addr)) { 1533 return -TARGET_EFAULT; 1534 } 1535 } 1536 ts_ptr = &ts; 1537 } else { 1538 ts_ptr = NULL; 1539 } 1540 1541 /* Extract the two packed args for the sigset */ 1542 if (arg6) { 1543 sig_ptr = &sig; 1544 sig.size = SIGSET_T_SIZE; 1545 1546 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 1547 if (!arg7) { 1548 return -TARGET_EFAULT; 1549 } 1550 arg_sigset = tswapal(arg7[0]); 1551 arg_sigsize = tswapal(arg7[1]); 1552 unlock_user(arg7, arg6, 0); 1553 1554 if (arg_sigset) { 1555 sig.set = &set; 1556 if (arg_sigsize != sizeof(*target_sigset)) { 1557 /* Like the kernel, we enforce correct size sigsets */ 1558 return -TARGET_EINVAL; 1559 } 1560 target_sigset = lock_user(VERIFY_READ, arg_sigset, 1561 sizeof(*target_sigset), 1); 1562 if (!target_sigset) { 1563 return -TARGET_EFAULT; 1564 } 1565 target_to_host_sigset(&set, target_sigset); 1566 unlock_user(target_sigset, arg_sigset, 0); 1567 } else { 1568 sig.set = NULL; 1569 } 1570 } else { 1571 sig_ptr = NULL; 1572 } 1573 1574 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1575 ts_ptr, sig_ptr)); 1576 1577 if (!is_error(ret)) { 1578 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) { 1579 return -TARGET_EFAULT; 1580 } 1581 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) { 1582 return -TARGET_EFAULT; 1583 } 1584 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) { 1585 return -TARGET_EFAULT; 1586 } 1587 if (time64) { 1588 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) { 1589 return -TARGET_EFAULT; 1590 } 1591 } else { 1592 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) { 1593 return -TARGET_EFAULT; 1594 } 1595 } 1596 } 1597 return ret; 1598 } 1599 #endif 1600 1601 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \ 1602 defined(TARGET_NR_ppoll_time64) 1603 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3, 1604 abi_long arg4, abi_long arg5, bool ppoll, bool time64) 1605 { 1606 struct target_pollfd *target_pfd; 1607 unsigned int nfds = arg2; 1608 struct pollfd *pfd; 1609 unsigned int i; 1610 abi_long ret; 1611 1612 pfd = NULL; 1613 target_pfd = NULL; 1614 if (nfds) { 1615 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 1616 return -TARGET_EINVAL; 1617 } 1618 target_pfd = lock_user(VERIFY_WRITE, arg1, 1619 sizeof(struct target_pollfd) * nfds, 1); 1620 if (!target_pfd) { 1621 return -TARGET_EFAULT; 1622 } 1623 1624 pfd = alloca(sizeof(struct pollfd) * nfds); 1625 for (i = 0; i < nfds; i++) { 1626 pfd[i].fd = tswap32(target_pfd[i].fd); 1627 pfd[i].events = tswap16(target_pfd[i].events); 1628 } 1629 } 1630 if (ppoll) { 1631 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 1632 target_sigset_t *target_set; 1633 sigset_t _set, *set = &_set; 1634 1635 if (arg3) { 1636 if (time64) { 1637 if (target_to_host_timespec64(timeout_ts, arg3)) { 1638 unlock_user(target_pfd, arg1, 0); 1639 return -TARGET_EFAULT; 1640 } 1641 } else { 1642 if (target_to_host_timespec(timeout_ts, arg3)) { 1643 unlock_user(target_pfd, arg1, 0); 1644 return -TARGET_EFAULT; 1645 } 1646 } 1647 } else { 1648 timeout_ts = NULL; 1649 } 1650 1651 if (arg4) { 1652 if (arg5 != sizeof(target_sigset_t)) { 1653 unlock_user(target_pfd, arg1, 0); 1654 return -TARGET_EINVAL; 1655 } 1656 1657 target_set = lock_user(VERIFY_READ, arg4, 1658 sizeof(target_sigset_t), 1); 1659 if (!target_set) { 1660 unlock_user(target_pfd, arg1, 0); 1661 return -TARGET_EFAULT; 1662 } 1663 target_to_host_sigset(set, target_set); 1664 } else { 1665 set = NULL; 1666 } 1667 1668 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 1669 set, SIGSET_T_SIZE)); 1670 1671 if (!is_error(ret) && arg3) { 1672 if (time64) { 1673 if (host_to_target_timespec64(arg3, timeout_ts)) { 1674 return -TARGET_EFAULT; 1675 } 1676 } else { 1677 if (host_to_target_timespec(arg3, timeout_ts)) { 1678 return -TARGET_EFAULT; 1679 } 1680 } 1681 } 1682 if (arg4) { 1683 unlock_user(target_set, arg4, 0); 1684 } 1685 } else { 1686 struct timespec ts, *pts; 1687 1688 if (arg3 >= 0) { 1689 /* Convert ms to secs, ns */ 1690 ts.tv_sec = arg3 / 1000; 1691 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 1692 pts = &ts; 1693 } else { 1694 /* -ve poll() timeout means "infinite" */ 1695 pts = NULL; 1696 } 1697 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 1698 } 1699 1700 if (!is_error(ret)) { 1701 for (i = 0; i < nfds; i++) { 1702 target_pfd[i].revents = tswap16(pfd[i].revents); 1703 } 1704 } 1705 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 1706 return ret; 1707 } 1708 #endif 1709 1710 static abi_long do_pipe2(int host_pipe[], int flags) 1711 { 1712 #ifdef CONFIG_PIPE2 1713 return pipe2(host_pipe, flags); 1714 #else 1715 return -ENOSYS; 1716 #endif 1717 } 1718 1719 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, 1720 int flags, int is_pipe2) 1721 { 1722 int host_pipe[2]; 1723 abi_long ret; 1724 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe); 1725 1726 if (is_error(ret)) 1727 return get_errno(ret); 1728 1729 /* Several targets have special calling conventions for the original 1730 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1731 if (!is_pipe2) { 1732 #if defined(TARGET_ALPHA) 1733 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; 1734 return host_pipe[0]; 1735 #elif defined(TARGET_MIPS) 1736 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; 1737 return host_pipe[0]; 1738 #elif defined(TARGET_SH4) 1739 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; 1740 return host_pipe[0]; 1741 #elif defined(TARGET_SPARC) 1742 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1]; 1743 return host_pipe[0]; 1744 #endif 1745 } 1746 1747 if (put_user_s32(host_pipe[0], pipedes) 1748 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) 1749 return -TARGET_EFAULT; 1750 return get_errno(ret); 1751 } 1752 1753 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1754 abi_ulong target_addr, 1755 socklen_t len) 1756 { 1757 struct target_ip_mreqn *target_smreqn; 1758 1759 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1760 if (!target_smreqn) 1761 return -TARGET_EFAULT; 1762 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1763 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1764 if (len == sizeof(struct target_ip_mreqn)) 1765 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1766 unlock_user(target_smreqn, target_addr, 0); 1767 1768 return 0; 1769 } 1770 1771 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1772 abi_ulong target_addr, 1773 socklen_t len) 1774 { 1775 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1776 sa_family_t sa_family; 1777 struct target_sockaddr *target_saddr; 1778 1779 if (fd_trans_target_to_host_addr(fd)) { 1780 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1781 } 1782 1783 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1784 if (!target_saddr) 1785 return -TARGET_EFAULT; 1786 1787 sa_family = tswap16(target_saddr->sa_family); 1788 1789 /* Oops. The caller might send a incomplete sun_path; sun_path 1790 * must be terminated by \0 (see the manual page), but 1791 * unfortunately it is quite common to specify sockaddr_un 1792 * length as "strlen(x->sun_path)" while it should be 1793 * "strlen(...) + 1". We'll fix that here if needed. 1794 * Linux kernel has a similar feature. 1795 */ 1796 1797 if (sa_family == AF_UNIX) { 1798 if (len < unix_maxlen && len > 0) { 1799 char *cp = (char*)target_saddr; 1800 1801 if ( cp[len-1] && !cp[len] ) 1802 len++; 1803 } 1804 if (len > unix_maxlen) 1805 len = unix_maxlen; 1806 } 1807 1808 memcpy(addr, target_saddr, len); 1809 addr->sa_family = sa_family; 1810 if (sa_family == AF_NETLINK) { 1811 struct sockaddr_nl *nladdr; 1812 1813 nladdr = (struct sockaddr_nl *)addr; 1814 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1815 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1816 } else if (sa_family == AF_PACKET) { 1817 struct target_sockaddr_ll *lladdr; 1818 1819 lladdr = (struct target_sockaddr_ll *)addr; 1820 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1821 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1822 } 1823 unlock_user(target_saddr, target_addr, 0); 1824 1825 return 0; 1826 } 1827 1828 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1829 struct sockaddr *addr, 1830 socklen_t len) 1831 { 1832 struct target_sockaddr *target_saddr; 1833 1834 if (len == 0) { 1835 return 0; 1836 } 1837 assert(addr); 1838 1839 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1840 if (!target_saddr) 1841 return -TARGET_EFAULT; 1842 memcpy(target_saddr, addr, len); 1843 if (len >= offsetof(struct target_sockaddr, sa_family) + 1844 sizeof(target_saddr->sa_family)) { 1845 target_saddr->sa_family = tswap16(addr->sa_family); 1846 } 1847 if (addr->sa_family == AF_NETLINK && 1848 len >= sizeof(struct target_sockaddr_nl)) { 1849 struct target_sockaddr_nl *target_nl = 1850 (struct target_sockaddr_nl *)target_saddr; 1851 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1852 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1853 } else if (addr->sa_family == AF_PACKET) { 1854 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1855 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1856 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1857 } else if (addr->sa_family == AF_INET6 && 1858 len >= sizeof(struct target_sockaddr_in6)) { 1859 struct target_sockaddr_in6 *target_in6 = 1860 (struct target_sockaddr_in6 *)target_saddr; 1861 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1862 } 1863 unlock_user(target_saddr, target_addr, len); 1864 1865 return 0; 1866 } 1867 1868 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1869 struct target_msghdr *target_msgh) 1870 { 1871 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1872 abi_long msg_controllen; 1873 abi_ulong target_cmsg_addr; 1874 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1875 socklen_t space = 0; 1876 1877 msg_controllen = tswapal(target_msgh->msg_controllen); 1878 if (msg_controllen < sizeof (struct target_cmsghdr)) 1879 goto the_end; 1880 target_cmsg_addr = tswapal(target_msgh->msg_control); 1881 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1882 target_cmsg_start = target_cmsg; 1883 if (!target_cmsg) 1884 return -TARGET_EFAULT; 1885 1886 while (cmsg && target_cmsg) { 1887 void *data = CMSG_DATA(cmsg); 1888 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1889 1890 int len = tswapal(target_cmsg->cmsg_len) 1891 - sizeof(struct target_cmsghdr); 1892 1893 space += CMSG_SPACE(len); 1894 if (space > msgh->msg_controllen) { 1895 space -= CMSG_SPACE(len); 1896 /* This is a QEMU bug, since we allocated the payload 1897 * area ourselves (unlike overflow in host-to-target 1898 * conversion, which is just the guest giving us a buffer 1899 * that's too small). It can't happen for the payload types 1900 * we currently support; if it becomes an issue in future 1901 * we would need to improve our allocation strategy to 1902 * something more intelligent than "twice the size of the 1903 * target buffer we're reading from". 1904 */ 1905 qemu_log_mask(LOG_UNIMP, 1906 ("Unsupported ancillary data %d/%d: " 1907 "unhandled msg size\n"), 1908 tswap32(target_cmsg->cmsg_level), 1909 tswap32(target_cmsg->cmsg_type)); 1910 break; 1911 } 1912 1913 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1914 cmsg->cmsg_level = SOL_SOCKET; 1915 } else { 1916 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1917 } 1918 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1919 cmsg->cmsg_len = CMSG_LEN(len); 1920 1921 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1922 int *fd = (int *)data; 1923 int *target_fd = (int *)target_data; 1924 int i, numfds = len / sizeof(int); 1925 1926 for (i = 0; i < numfds; i++) { 1927 __get_user(fd[i], target_fd + i); 1928 } 1929 } else if (cmsg->cmsg_level == SOL_SOCKET 1930 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1931 struct ucred *cred = (struct ucred *)data; 1932 struct target_ucred *target_cred = 1933 (struct target_ucred *)target_data; 1934 1935 __get_user(cred->pid, &target_cred->pid); 1936 __get_user(cred->uid, &target_cred->uid); 1937 __get_user(cred->gid, &target_cred->gid); 1938 } else { 1939 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1940 cmsg->cmsg_level, cmsg->cmsg_type); 1941 memcpy(data, target_data, len); 1942 } 1943 1944 cmsg = CMSG_NXTHDR(msgh, cmsg); 1945 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1946 target_cmsg_start); 1947 } 1948 unlock_user(target_cmsg, target_cmsg_addr, 0); 1949 the_end: 1950 msgh->msg_controllen = space; 1951 return 0; 1952 } 1953 1954 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1955 struct msghdr *msgh) 1956 { 1957 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1958 abi_long msg_controllen; 1959 abi_ulong target_cmsg_addr; 1960 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1961 socklen_t space = 0; 1962 1963 msg_controllen = tswapal(target_msgh->msg_controllen); 1964 if (msg_controllen < sizeof (struct target_cmsghdr)) 1965 goto the_end; 1966 target_cmsg_addr = tswapal(target_msgh->msg_control); 1967 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1968 target_cmsg_start = target_cmsg; 1969 if (!target_cmsg) 1970 return -TARGET_EFAULT; 1971 1972 while (cmsg && target_cmsg) { 1973 void *data = CMSG_DATA(cmsg); 1974 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1975 1976 int len = cmsg->cmsg_len - sizeof(struct cmsghdr); 1977 int tgt_len, tgt_space; 1978 1979 /* We never copy a half-header but may copy half-data; 1980 * this is Linux's behaviour in put_cmsg(). Note that 1981 * truncation here is a guest problem (which we report 1982 * to the guest via the CTRUNC bit), unlike truncation 1983 * in target_to_host_cmsg, which is a QEMU bug. 1984 */ 1985 if (msg_controllen < sizeof(struct target_cmsghdr)) { 1986 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1987 break; 1988 } 1989 1990 if (cmsg->cmsg_level == SOL_SOCKET) { 1991 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1992 } else { 1993 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1994 } 1995 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1996 1997 /* Payload types which need a different size of payload on 1998 * the target must adjust tgt_len here. 1999 */ 2000 tgt_len = len; 2001 switch (cmsg->cmsg_level) { 2002 case SOL_SOCKET: 2003 switch (cmsg->cmsg_type) { 2004 case SO_TIMESTAMP: 2005 tgt_len = sizeof(struct target_timeval); 2006 break; 2007 default: 2008 break; 2009 } 2010 break; 2011 default: 2012 break; 2013 } 2014 2015 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) { 2016 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 2017 tgt_len = msg_controllen - sizeof(struct target_cmsghdr); 2018 } 2019 2020 /* We must now copy-and-convert len bytes of payload 2021 * into tgt_len bytes of destination space. Bear in mind 2022 * that in both source and destination we may be dealing 2023 * with a truncated value! 2024 */ 2025 switch (cmsg->cmsg_level) { 2026 case SOL_SOCKET: 2027 switch (cmsg->cmsg_type) { 2028 case SCM_RIGHTS: 2029 { 2030 int *fd = (int *)data; 2031 int *target_fd = (int *)target_data; 2032 int i, numfds = tgt_len / sizeof(int); 2033 2034 for (i = 0; i < numfds; i++) { 2035 __put_user(fd[i], target_fd + i); 2036 } 2037 break; 2038 } 2039 case SO_TIMESTAMP: 2040 { 2041 struct timeval *tv = (struct timeval *)data; 2042 struct target_timeval *target_tv = 2043 (struct target_timeval *)target_data; 2044 2045 if (len != sizeof(struct timeval) || 2046 tgt_len != sizeof(struct target_timeval)) { 2047 goto unimplemented; 2048 } 2049 2050 /* copy struct timeval to target */ 2051 __put_user(tv->tv_sec, &target_tv->tv_sec); 2052 __put_user(tv->tv_usec, &target_tv->tv_usec); 2053 break; 2054 } 2055 case SCM_CREDENTIALS: 2056 { 2057 struct ucred *cred = (struct ucred *)data; 2058 struct target_ucred *target_cred = 2059 (struct target_ucred *)target_data; 2060 2061 __put_user(cred->pid, &target_cred->pid); 2062 __put_user(cred->uid, &target_cred->uid); 2063 __put_user(cred->gid, &target_cred->gid); 2064 break; 2065 } 2066 default: 2067 goto unimplemented; 2068 } 2069 break; 2070 2071 case SOL_IP: 2072 switch (cmsg->cmsg_type) { 2073 case IP_TTL: 2074 { 2075 uint32_t *v = (uint32_t *)data; 2076 uint32_t *t_int = (uint32_t *)target_data; 2077 2078 if (len != sizeof(uint32_t) || 2079 tgt_len != sizeof(uint32_t)) { 2080 goto unimplemented; 2081 } 2082 __put_user(*v, t_int); 2083 break; 2084 } 2085 case IP_RECVERR: 2086 { 2087 struct errhdr_t { 2088 struct sock_extended_err ee; 2089 struct sockaddr_in offender; 2090 }; 2091 struct errhdr_t *errh = (struct errhdr_t *)data; 2092 struct errhdr_t *target_errh = 2093 (struct errhdr_t *)target_data; 2094 2095 if (len != sizeof(struct errhdr_t) || 2096 tgt_len != sizeof(struct errhdr_t)) { 2097 goto unimplemented; 2098 } 2099 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2100 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2101 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2102 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2103 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2104 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2105 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2106 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2107 (void *) &errh->offender, sizeof(errh->offender)); 2108 break; 2109 } 2110 default: 2111 goto unimplemented; 2112 } 2113 break; 2114 2115 case SOL_IPV6: 2116 switch (cmsg->cmsg_type) { 2117 case IPV6_HOPLIMIT: 2118 { 2119 uint32_t *v = (uint32_t *)data; 2120 uint32_t *t_int = (uint32_t *)target_data; 2121 2122 if (len != sizeof(uint32_t) || 2123 tgt_len != sizeof(uint32_t)) { 2124 goto unimplemented; 2125 } 2126 __put_user(*v, t_int); 2127 break; 2128 } 2129 case IPV6_RECVERR: 2130 { 2131 struct errhdr6_t { 2132 struct sock_extended_err ee; 2133 struct sockaddr_in6 offender; 2134 }; 2135 struct errhdr6_t *errh = (struct errhdr6_t *)data; 2136 struct errhdr6_t *target_errh = 2137 (struct errhdr6_t *)target_data; 2138 2139 if (len != sizeof(struct errhdr6_t) || 2140 tgt_len != sizeof(struct errhdr6_t)) { 2141 goto unimplemented; 2142 } 2143 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2144 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2145 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2146 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2147 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2148 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2149 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2150 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2151 (void *) &errh->offender, sizeof(errh->offender)); 2152 break; 2153 } 2154 default: 2155 goto unimplemented; 2156 } 2157 break; 2158 2159 default: 2160 unimplemented: 2161 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 2162 cmsg->cmsg_level, cmsg->cmsg_type); 2163 memcpy(target_data, data, MIN(len, tgt_len)); 2164 if (tgt_len > len) { 2165 memset(target_data + len, 0, tgt_len - len); 2166 } 2167 } 2168 2169 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len)); 2170 tgt_space = TARGET_CMSG_SPACE(tgt_len); 2171 if (msg_controllen < tgt_space) { 2172 tgt_space = msg_controllen; 2173 } 2174 msg_controllen -= tgt_space; 2175 space += tgt_space; 2176 cmsg = CMSG_NXTHDR(msgh, cmsg); 2177 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 2178 target_cmsg_start); 2179 } 2180 unlock_user(target_cmsg, target_cmsg_addr, space); 2181 the_end: 2182 target_msgh->msg_controllen = tswapal(space); 2183 return 0; 2184 } 2185 2186 /* do_setsockopt() Must return target values and target errnos. */ 2187 static abi_long do_setsockopt(int sockfd, int level, int optname, 2188 abi_ulong optval_addr, socklen_t optlen) 2189 { 2190 abi_long ret; 2191 int val; 2192 struct ip_mreqn *ip_mreq; 2193 struct ip_mreq_source *ip_mreq_source; 2194 2195 switch(level) { 2196 case SOL_TCP: 2197 case SOL_UDP: 2198 /* TCP and UDP options all take an 'int' value. */ 2199 if (optlen < sizeof(uint32_t)) 2200 return -TARGET_EINVAL; 2201 2202 if (get_user_u32(val, optval_addr)) 2203 return -TARGET_EFAULT; 2204 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2205 break; 2206 case SOL_IP: 2207 switch(optname) { 2208 case IP_TOS: 2209 case IP_TTL: 2210 case IP_HDRINCL: 2211 case IP_ROUTER_ALERT: 2212 case IP_RECVOPTS: 2213 case IP_RETOPTS: 2214 case IP_PKTINFO: 2215 case IP_MTU_DISCOVER: 2216 case IP_RECVERR: 2217 case IP_RECVTTL: 2218 case IP_RECVTOS: 2219 #ifdef IP_FREEBIND 2220 case IP_FREEBIND: 2221 #endif 2222 case IP_MULTICAST_TTL: 2223 case IP_MULTICAST_LOOP: 2224 val = 0; 2225 if (optlen >= sizeof(uint32_t)) { 2226 if (get_user_u32(val, optval_addr)) 2227 return -TARGET_EFAULT; 2228 } else if (optlen >= 1) { 2229 if (get_user_u8(val, optval_addr)) 2230 return -TARGET_EFAULT; 2231 } 2232 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2233 break; 2234 case IP_ADD_MEMBERSHIP: 2235 case IP_DROP_MEMBERSHIP: 2236 if (optlen < sizeof (struct target_ip_mreq) || 2237 optlen > sizeof (struct target_ip_mreqn)) 2238 return -TARGET_EINVAL; 2239 2240 ip_mreq = (struct ip_mreqn *) alloca(optlen); 2241 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 2242 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 2243 break; 2244 2245 case IP_BLOCK_SOURCE: 2246 case IP_UNBLOCK_SOURCE: 2247 case IP_ADD_SOURCE_MEMBERSHIP: 2248 case IP_DROP_SOURCE_MEMBERSHIP: 2249 if (optlen != sizeof (struct target_ip_mreq_source)) 2250 return -TARGET_EINVAL; 2251 2252 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2253 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 2254 unlock_user (ip_mreq_source, optval_addr, 0); 2255 break; 2256 2257 default: 2258 goto unimplemented; 2259 } 2260 break; 2261 case SOL_IPV6: 2262 switch (optname) { 2263 case IPV6_MTU_DISCOVER: 2264 case IPV6_MTU: 2265 case IPV6_V6ONLY: 2266 case IPV6_RECVPKTINFO: 2267 case IPV6_UNICAST_HOPS: 2268 case IPV6_MULTICAST_HOPS: 2269 case IPV6_MULTICAST_LOOP: 2270 case IPV6_RECVERR: 2271 case IPV6_RECVHOPLIMIT: 2272 case IPV6_2292HOPLIMIT: 2273 case IPV6_CHECKSUM: 2274 case IPV6_ADDRFORM: 2275 case IPV6_2292PKTINFO: 2276 case IPV6_RECVTCLASS: 2277 case IPV6_RECVRTHDR: 2278 case IPV6_2292RTHDR: 2279 case IPV6_RECVHOPOPTS: 2280 case IPV6_2292HOPOPTS: 2281 case IPV6_RECVDSTOPTS: 2282 case IPV6_2292DSTOPTS: 2283 case IPV6_TCLASS: 2284 case IPV6_ADDR_PREFERENCES: 2285 #ifdef IPV6_RECVPATHMTU 2286 case IPV6_RECVPATHMTU: 2287 #endif 2288 #ifdef IPV6_TRANSPARENT 2289 case IPV6_TRANSPARENT: 2290 #endif 2291 #ifdef IPV6_FREEBIND 2292 case IPV6_FREEBIND: 2293 #endif 2294 #ifdef IPV6_RECVORIGDSTADDR 2295 case IPV6_RECVORIGDSTADDR: 2296 #endif 2297 val = 0; 2298 if (optlen < sizeof(uint32_t)) { 2299 return -TARGET_EINVAL; 2300 } 2301 if (get_user_u32(val, optval_addr)) { 2302 return -TARGET_EFAULT; 2303 } 2304 ret = get_errno(setsockopt(sockfd, level, optname, 2305 &val, sizeof(val))); 2306 break; 2307 case IPV6_PKTINFO: 2308 { 2309 struct in6_pktinfo pki; 2310 2311 if (optlen < sizeof(pki)) { 2312 return -TARGET_EINVAL; 2313 } 2314 2315 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2316 return -TARGET_EFAULT; 2317 } 2318 2319 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2320 2321 ret = get_errno(setsockopt(sockfd, level, optname, 2322 &pki, sizeof(pki))); 2323 break; 2324 } 2325 case IPV6_ADD_MEMBERSHIP: 2326 case IPV6_DROP_MEMBERSHIP: 2327 { 2328 struct ipv6_mreq ipv6mreq; 2329 2330 if (optlen < sizeof(ipv6mreq)) { 2331 return -TARGET_EINVAL; 2332 } 2333 2334 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { 2335 return -TARGET_EFAULT; 2336 } 2337 2338 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface); 2339 2340 ret = get_errno(setsockopt(sockfd, level, optname, 2341 &ipv6mreq, sizeof(ipv6mreq))); 2342 break; 2343 } 2344 default: 2345 goto unimplemented; 2346 } 2347 break; 2348 case SOL_ICMPV6: 2349 switch (optname) { 2350 case ICMPV6_FILTER: 2351 { 2352 struct icmp6_filter icmp6f; 2353 2354 if (optlen > sizeof(icmp6f)) { 2355 optlen = sizeof(icmp6f); 2356 } 2357 2358 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2359 return -TARGET_EFAULT; 2360 } 2361 2362 for (val = 0; val < 8; val++) { 2363 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2364 } 2365 2366 ret = get_errno(setsockopt(sockfd, level, optname, 2367 &icmp6f, optlen)); 2368 break; 2369 } 2370 default: 2371 goto unimplemented; 2372 } 2373 break; 2374 case SOL_RAW: 2375 switch (optname) { 2376 case ICMP_FILTER: 2377 case IPV6_CHECKSUM: 2378 /* those take an u32 value */ 2379 if (optlen < sizeof(uint32_t)) { 2380 return -TARGET_EINVAL; 2381 } 2382 2383 if (get_user_u32(val, optval_addr)) { 2384 return -TARGET_EFAULT; 2385 } 2386 ret = get_errno(setsockopt(sockfd, level, optname, 2387 &val, sizeof(val))); 2388 break; 2389 2390 default: 2391 goto unimplemented; 2392 } 2393 break; 2394 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE) 2395 case SOL_ALG: 2396 switch (optname) { 2397 case ALG_SET_KEY: 2398 { 2399 char *alg_key = g_malloc(optlen); 2400 2401 if (!alg_key) { 2402 return -TARGET_ENOMEM; 2403 } 2404 if (copy_from_user(alg_key, optval_addr, optlen)) { 2405 g_free(alg_key); 2406 return -TARGET_EFAULT; 2407 } 2408 ret = get_errno(setsockopt(sockfd, level, optname, 2409 alg_key, optlen)); 2410 g_free(alg_key); 2411 break; 2412 } 2413 case ALG_SET_AEAD_AUTHSIZE: 2414 { 2415 ret = get_errno(setsockopt(sockfd, level, optname, 2416 NULL, optlen)); 2417 break; 2418 } 2419 default: 2420 goto unimplemented; 2421 } 2422 break; 2423 #endif 2424 case TARGET_SOL_SOCKET: 2425 switch (optname) { 2426 case TARGET_SO_RCVTIMEO: 2427 { 2428 struct timeval tv; 2429 2430 optname = SO_RCVTIMEO; 2431 2432 set_timeout: 2433 if (optlen != sizeof(struct target_timeval)) { 2434 return -TARGET_EINVAL; 2435 } 2436 2437 if (copy_from_user_timeval(&tv, optval_addr)) { 2438 return -TARGET_EFAULT; 2439 } 2440 2441 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2442 &tv, sizeof(tv))); 2443 return ret; 2444 } 2445 case TARGET_SO_SNDTIMEO: 2446 optname = SO_SNDTIMEO; 2447 goto set_timeout; 2448 case TARGET_SO_ATTACH_FILTER: 2449 { 2450 struct target_sock_fprog *tfprog; 2451 struct target_sock_filter *tfilter; 2452 struct sock_fprog fprog; 2453 struct sock_filter *filter; 2454 int i; 2455 2456 if (optlen != sizeof(*tfprog)) { 2457 return -TARGET_EINVAL; 2458 } 2459 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 2460 return -TARGET_EFAULT; 2461 } 2462 if (!lock_user_struct(VERIFY_READ, tfilter, 2463 tswapal(tfprog->filter), 0)) { 2464 unlock_user_struct(tfprog, optval_addr, 1); 2465 return -TARGET_EFAULT; 2466 } 2467 2468 fprog.len = tswap16(tfprog->len); 2469 filter = g_try_new(struct sock_filter, fprog.len); 2470 if (filter == NULL) { 2471 unlock_user_struct(tfilter, tfprog->filter, 1); 2472 unlock_user_struct(tfprog, optval_addr, 1); 2473 return -TARGET_ENOMEM; 2474 } 2475 for (i = 0; i < fprog.len; i++) { 2476 filter[i].code = tswap16(tfilter[i].code); 2477 filter[i].jt = tfilter[i].jt; 2478 filter[i].jf = tfilter[i].jf; 2479 filter[i].k = tswap32(tfilter[i].k); 2480 } 2481 fprog.filter = filter; 2482 2483 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 2484 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 2485 g_free(filter); 2486 2487 unlock_user_struct(tfilter, tfprog->filter, 1); 2488 unlock_user_struct(tfprog, optval_addr, 1); 2489 return ret; 2490 } 2491 case TARGET_SO_BINDTODEVICE: 2492 { 2493 char *dev_ifname, *addr_ifname; 2494 2495 if (optlen > IFNAMSIZ - 1) { 2496 optlen = IFNAMSIZ - 1; 2497 } 2498 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2499 if (!dev_ifname) { 2500 return -TARGET_EFAULT; 2501 } 2502 optname = SO_BINDTODEVICE; 2503 addr_ifname = alloca(IFNAMSIZ); 2504 memcpy(addr_ifname, dev_ifname, optlen); 2505 addr_ifname[optlen] = 0; 2506 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2507 addr_ifname, optlen)); 2508 unlock_user (dev_ifname, optval_addr, 0); 2509 return ret; 2510 } 2511 case TARGET_SO_LINGER: 2512 { 2513 struct linger lg; 2514 struct target_linger *tlg; 2515 2516 if (optlen != sizeof(struct target_linger)) { 2517 return -TARGET_EINVAL; 2518 } 2519 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) { 2520 return -TARGET_EFAULT; 2521 } 2522 __get_user(lg.l_onoff, &tlg->l_onoff); 2523 __get_user(lg.l_linger, &tlg->l_linger); 2524 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER, 2525 &lg, sizeof(lg))); 2526 unlock_user_struct(tlg, optval_addr, 0); 2527 return ret; 2528 } 2529 /* Options with 'int' argument. */ 2530 case TARGET_SO_DEBUG: 2531 optname = SO_DEBUG; 2532 break; 2533 case TARGET_SO_REUSEADDR: 2534 optname = SO_REUSEADDR; 2535 break; 2536 #ifdef SO_REUSEPORT 2537 case TARGET_SO_REUSEPORT: 2538 optname = SO_REUSEPORT; 2539 break; 2540 #endif 2541 case TARGET_SO_TYPE: 2542 optname = SO_TYPE; 2543 break; 2544 case TARGET_SO_ERROR: 2545 optname = SO_ERROR; 2546 break; 2547 case TARGET_SO_DONTROUTE: 2548 optname = SO_DONTROUTE; 2549 break; 2550 case TARGET_SO_BROADCAST: 2551 optname = SO_BROADCAST; 2552 break; 2553 case TARGET_SO_SNDBUF: 2554 optname = SO_SNDBUF; 2555 break; 2556 case TARGET_SO_SNDBUFFORCE: 2557 optname = SO_SNDBUFFORCE; 2558 break; 2559 case TARGET_SO_RCVBUF: 2560 optname = SO_RCVBUF; 2561 break; 2562 case TARGET_SO_RCVBUFFORCE: 2563 optname = SO_RCVBUFFORCE; 2564 break; 2565 case TARGET_SO_KEEPALIVE: 2566 optname = SO_KEEPALIVE; 2567 break; 2568 case TARGET_SO_OOBINLINE: 2569 optname = SO_OOBINLINE; 2570 break; 2571 case TARGET_SO_NO_CHECK: 2572 optname = SO_NO_CHECK; 2573 break; 2574 case TARGET_SO_PRIORITY: 2575 optname = SO_PRIORITY; 2576 break; 2577 #ifdef SO_BSDCOMPAT 2578 case TARGET_SO_BSDCOMPAT: 2579 optname = SO_BSDCOMPAT; 2580 break; 2581 #endif 2582 case TARGET_SO_PASSCRED: 2583 optname = SO_PASSCRED; 2584 break; 2585 case TARGET_SO_PASSSEC: 2586 optname = SO_PASSSEC; 2587 break; 2588 case TARGET_SO_TIMESTAMP: 2589 optname = SO_TIMESTAMP; 2590 break; 2591 case TARGET_SO_RCVLOWAT: 2592 optname = SO_RCVLOWAT; 2593 break; 2594 default: 2595 goto unimplemented; 2596 } 2597 if (optlen < sizeof(uint32_t)) 2598 return -TARGET_EINVAL; 2599 2600 if (get_user_u32(val, optval_addr)) 2601 return -TARGET_EFAULT; 2602 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 2603 break; 2604 #ifdef SOL_NETLINK 2605 case SOL_NETLINK: 2606 switch (optname) { 2607 case NETLINK_PKTINFO: 2608 case NETLINK_ADD_MEMBERSHIP: 2609 case NETLINK_DROP_MEMBERSHIP: 2610 case NETLINK_BROADCAST_ERROR: 2611 case NETLINK_NO_ENOBUFS: 2612 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2613 case NETLINK_LISTEN_ALL_NSID: 2614 case NETLINK_CAP_ACK: 2615 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2616 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2617 case NETLINK_EXT_ACK: 2618 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2619 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2620 case NETLINK_GET_STRICT_CHK: 2621 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2622 break; 2623 default: 2624 goto unimplemented; 2625 } 2626 val = 0; 2627 if (optlen < sizeof(uint32_t)) { 2628 return -TARGET_EINVAL; 2629 } 2630 if (get_user_u32(val, optval_addr)) { 2631 return -TARGET_EFAULT; 2632 } 2633 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val, 2634 sizeof(val))); 2635 break; 2636 #endif /* SOL_NETLINK */ 2637 default: 2638 unimplemented: 2639 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n", 2640 level, optname); 2641 ret = -TARGET_ENOPROTOOPT; 2642 } 2643 return ret; 2644 } 2645 2646 /* do_getsockopt() Must return target values and target errnos. */ 2647 static abi_long do_getsockopt(int sockfd, int level, int optname, 2648 abi_ulong optval_addr, abi_ulong optlen) 2649 { 2650 abi_long ret; 2651 int len, val; 2652 socklen_t lv; 2653 2654 switch(level) { 2655 case TARGET_SOL_SOCKET: 2656 level = SOL_SOCKET; 2657 switch (optname) { 2658 /* These don't just return a single integer */ 2659 case TARGET_SO_PEERNAME: 2660 goto unimplemented; 2661 case TARGET_SO_RCVTIMEO: { 2662 struct timeval tv; 2663 socklen_t tvlen; 2664 2665 optname = SO_RCVTIMEO; 2666 2667 get_timeout: 2668 if (get_user_u32(len, optlen)) { 2669 return -TARGET_EFAULT; 2670 } 2671 if (len < 0) { 2672 return -TARGET_EINVAL; 2673 } 2674 2675 tvlen = sizeof(tv); 2676 ret = get_errno(getsockopt(sockfd, level, optname, 2677 &tv, &tvlen)); 2678 if (ret < 0) { 2679 return ret; 2680 } 2681 if (len > sizeof(struct target_timeval)) { 2682 len = sizeof(struct target_timeval); 2683 } 2684 if (copy_to_user_timeval(optval_addr, &tv)) { 2685 return -TARGET_EFAULT; 2686 } 2687 if (put_user_u32(len, optlen)) { 2688 return -TARGET_EFAULT; 2689 } 2690 break; 2691 } 2692 case TARGET_SO_SNDTIMEO: 2693 optname = SO_SNDTIMEO; 2694 goto get_timeout; 2695 case TARGET_SO_PEERCRED: { 2696 struct ucred cr; 2697 socklen_t crlen; 2698 struct target_ucred *tcr; 2699 2700 if (get_user_u32(len, optlen)) { 2701 return -TARGET_EFAULT; 2702 } 2703 if (len < 0) { 2704 return -TARGET_EINVAL; 2705 } 2706 2707 crlen = sizeof(cr); 2708 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 2709 &cr, &crlen)); 2710 if (ret < 0) { 2711 return ret; 2712 } 2713 if (len > crlen) { 2714 len = crlen; 2715 } 2716 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 2717 return -TARGET_EFAULT; 2718 } 2719 __put_user(cr.pid, &tcr->pid); 2720 __put_user(cr.uid, &tcr->uid); 2721 __put_user(cr.gid, &tcr->gid); 2722 unlock_user_struct(tcr, optval_addr, 1); 2723 if (put_user_u32(len, optlen)) { 2724 return -TARGET_EFAULT; 2725 } 2726 break; 2727 } 2728 case TARGET_SO_PEERSEC: { 2729 char *name; 2730 2731 if (get_user_u32(len, optlen)) { 2732 return -TARGET_EFAULT; 2733 } 2734 if (len < 0) { 2735 return -TARGET_EINVAL; 2736 } 2737 name = lock_user(VERIFY_WRITE, optval_addr, len, 0); 2738 if (!name) { 2739 return -TARGET_EFAULT; 2740 } 2741 lv = len; 2742 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC, 2743 name, &lv)); 2744 if (put_user_u32(lv, optlen)) { 2745 ret = -TARGET_EFAULT; 2746 } 2747 unlock_user(name, optval_addr, lv); 2748 break; 2749 } 2750 case TARGET_SO_LINGER: 2751 { 2752 struct linger lg; 2753 socklen_t lglen; 2754 struct target_linger *tlg; 2755 2756 if (get_user_u32(len, optlen)) { 2757 return -TARGET_EFAULT; 2758 } 2759 if (len < 0) { 2760 return -TARGET_EINVAL; 2761 } 2762 2763 lglen = sizeof(lg); 2764 ret = get_errno(getsockopt(sockfd, level, SO_LINGER, 2765 &lg, &lglen)); 2766 if (ret < 0) { 2767 return ret; 2768 } 2769 if (len > lglen) { 2770 len = lglen; 2771 } 2772 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) { 2773 return -TARGET_EFAULT; 2774 } 2775 __put_user(lg.l_onoff, &tlg->l_onoff); 2776 __put_user(lg.l_linger, &tlg->l_linger); 2777 unlock_user_struct(tlg, optval_addr, 1); 2778 if (put_user_u32(len, optlen)) { 2779 return -TARGET_EFAULT; 2780 } 2781 break; 2782 } 2783 /* Options with 'int' argument. */ 2784 case TARGET_SO_DEBUG: 2785 optname = SO_DEBUG; 2786 goto int_case; 2787 case TARGET_SO_REUSEADDR: 2788 optname = SO_REUSEADDR; 2789 goto int_case; 2790 #ifdef SO_REUSEPORT 2791 case TARGET_SO_REUSEPORT: 2792 optname = SO_REUSEPORT; 2793 goto int_case; 2794 #endif 2795 case TARGET_SO_TYPE: 2796 optname = SO_TYPE; 2797 goto int_case; 2798 case TARGET_SO_ERROR: 2799 optname = SO_ERROR; 2800 goto int_case; 2801 case TARGET_SO_DONTROUTE: 2802 optname = SO_DONTROUTE; 2803 goto int_case; 2804 case TARGET_SO_BROADCAST: 2805 optname = SO_BROADCAST; 2806 goto int_case; 2807 case TARGET_SO_SNDBUF: 2808 optname = SO_SNDBUF; 2809 goto int_case; 2810 case TARGET_SO_RCVBUF: 2811 optname = SO_RCVBUF; 2812 goto int_case; 2813 case TARGET_SO_KEEPALIVE: 2814 optname = SO_KEEPALIVE; 2815 goto int_case; 2816 case TARGET_SO_OOBINLINE: 2817 optname = SO_OOBINLINE; 2818 goto int_case; 2819 case TARGET_SO_NO_CHECK: 2820 optname = SO_NO_CHECK; 2821 goto int_case; 2822 case TARGET_SO_PRIORITY: 2823 optname = SO_PRIORITY; 2824 goto int_case; 2825 #ifdef SO_BSDCOMPAT 2826 case TARGET_SO_BSDCOMPAT: 2827 optname = SO_BSDCOMPAT; 2828 goto int_case; 2829 #endif 2830 case TARGET_SO_PASSCRED: 2831 optname = SO_PASSCRED; 2832 goto int_case; 2833 case TARGET_SO_TIMESTAMP: 2834 optname = SO_TIMESTAMP; 2835 goto int_case; 2836 case TARGET_SO_RCVLOWAT: 2837 optname = SO_RCVLOWAT; 2838 goto int_case; 2839 case TARGET_SO_ACCEPTCONN: 2840 optname = SO_ACCEPTCONN; 2841 goto int_case; 2842 case TARGET_SO_PROTOCOL: 2843 optname = SO_PROTOCOL; 2844 goto int_case; 2845 case TARGET_SO_DOMAIN: 2846 optname = SO_DOMAIN; 2847 goto int_case; 2848 default: 2849 goto int_case; 2850 } 2851 break; 2852 case SOL_TCP: 2853 case SOL_UDP: 2854 /* TCP and UDP options all take an 'int' value. */ 2855 int_case: 2856 if (get_user_u32(len, optlen)) 2857 return -TARGET_EFAULT; 2858 if (len < 0) 2859 return -TARGET_EINVAL; 2860 lv = sizeof(lv); 2861 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2862 if (ret < 0) 2863 return ret; 2864 if (optname == SO_TYPE) { 2865 val = host_to_target_sock_type(val); 2866 } 2867 if (len > lv) 2868 len = lv; 2869 if (len == 4) { 2870 if (put_user_u32(val, optval_addr)) 2871 return -TARGET_EFAULT; 2872 } else { 2873 if (put_user_u8(val, optval_addr)) 2874 return -TARGET_EFAULT; 2875 } 2876 if (put_user_u32(len, optlen)) 2877 return -TARGET_EFAULT; 2878 break; 2879 case SOL_IP: 2880 switch(optname) { 2881 case IP_TOS: 2882 case IP_TTL: 2883 case IP_HDRINCL: 2884 case IP_ROUTER_ALERT: 2885 case IP_RECVOPTS: 2886 case IP_RETOPTS: 2887 case IP_PKTINFO: 2888 case IP_MTU_DISCOVER: 2889 case IP_RECVERR: 2890 case IP_RECVTOS: 2891 #ifdef IP_FREEBIND 2892 case IP_FREEBIND: 2893 #endif 2894 case IP_MULTICAST_TTL: 2895 case IP_MULTICAST_LOOP: 2896 if (get_user_u32(len, optlen)) 2897 return -TARGET_EFAULT; 2898 if (len < 0) 2899 return -TARGET_EINVAL; 2900 lv = sizeof(lv); 2901 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2902 if (ret < 0) 2903 return ret; 2904 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2905 len = 1; 2906 if (put_user_u32(len, optlen) 2907 || put_user_u8(val, optval_addr)) 2908 return -TARGET_EFAULT; 2909 } else { 2910 if (len > sizeof(int)) 2911 len = sizeof(int); 2912 if (put_user_u32(len, optlen) 2913 || put_user_u32(val, optval_addr)) 2914 return -TARGET_EFAULT; 2915 } 2916 break; 2917 default: 2918 ret = -TARGET_ENOPROTOOPT; 2919 break; 2920 } 2921 break; 2922 case SOL_IPV6: 2923 switch (optname) { 2924 case IPV6_MTU_DISCOVER: 2925 case IPV6_MTU: 2926 case IPV6_V6ONLY: 2927 case IPV6_RECVPKTINFO: 2928 case IPV6_UNICAST_HOPS: 2929 case IPV6_MULTICAST_HOPS: 2930 case IPV6_MULTICAST_LOOP: 2931 case IPV6_RECVERR: 2932 case IPV6_RECVHOPLIMIT: 2933 case IPV6_2292HOPLIMIT: 2934 case IPV6_CHECKSUM: 2935 case IPV6_ADDRFORM: 2936 case IPV6_2292PKTINFO: 2937 case IPV6_RECVTCLASS: 2938 case IPV6_RECVRTHDR: 2939 case IPV6_2292RTHDR: 2940 case IPV6_RECVHOPOPTS: 2941 case IPV6_2292HOPOPTS: 2942 case IPV6_RECVDSTOPTS: 2943 case IPV6_2292DSTOPTS: 2944 case IPV6_TCLASS: 2945 case IPV6_ADDR_PREFERENCES: 2946 #ifdef IPV6_RECVPATHMTU 2947 case IPV6_RECVPATHMTU: 2948 #endif 2949 #ifdef IPV6_TRANSPARENT 2950 case IPV6_TRANSPARENT: 2951 #endif 2952 #ifdef IPV6_FREEBIND 2953 case IPV6_FREEBIND: 2954 #endif 2955 #ifdef IPV6_RECVORIGDSTADDR 2956 case IPV6_RECVORIGDSTADDR: 2957 #endif 2958 if (get_user_u32(len, optlen)) 2959 return -TARGET_EFAULT; 2960 if (len < 0) 2961 return -TARGET_EINVAL; 2962 lv = sizeof(lv); 2963 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2964 if (ret < 0) 2965 return ret; 2966 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2967 len = 1; 2968 if (put_user_u32(len, optlen) 2969 || put_user_u8(val, optval_addr)) 2970 return -TARGET_EFAULT; 2971 } else { 2972 if (len > sizeof(int)) 2973 len = sizeof(int); 2974 if (put_user_u32(len, optlen) 2975 || put_user_u32(val, optval_addr)) 2976 return -TARGET_EFAULT; 2977 } 2978 break; 2979 default: 2980 ret = -TARGET_ENOPROTOOPT; 2981 break; 2982 } 2983 break; 2984 #ifdef SOL_NETLINK 2985 case SOL_NETLINK: 2986 switch (optname) { 2987 case NETLINK_PKTINFO: 2988 case NETLINK_BROADCAST_ERROR: 2989 case NETLINK_NO_ENOBUFS: 2990 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2991 case NETLINK_LISTEN_ALL_NSID: 2992 case NETLINK_CAP_ACK: 2993 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2994 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2995 case NETLINK_EXT_ACK: 2996 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2997 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2998 case NETLINK_GET_STRICT_CHK: 2999 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 3000 if (get_user_u32(len, optlen)) { 3001 return -TARGET_EFAULT; 3002 } 3003 if (len != sizeof(val)) { 3004 return -TARGET_EINVAL; 3005 } 3006 lv = len; 3007 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 3008 if (ret < 0) { 3009 return ret; 3010 } 3011 if (put_user_u32(lv, optlen) 3012 || put_user_u32(val, optval_addr)) { 3013 return -TARGET_EFAULT; 3014 } 3015 break; 3016 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 3017 case NETLINK_LIST_MEMBERSHIPS: 3018 { 3019 uint32_t *results; 3020 int i; 3021 if (get_user_u32(len, optlen)) { 3022 return -TARGET_EFAULT; 3023 } 3024 if (len < 0) { 3025 return -TARGET_EINVAL; 3026 } 3027 results = lock_user(VERIFY_WRITE, optval_addr, len, 1); 3028 if (!results && len > 0) { 3029 return -TARGET_EFAULT; 3030 } 3031 lv = len; 3032 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv)); 3033 if (ret < 0) { 3034 unlock_user(results, optval_addr, 0); 3035 return ret; 3036 } 3037 /* swap host endianess to target endianess. */ 3038 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 3039 results[i] = tswap32(results[i]); 3040 } 3041 if (put_user_u32(lv, optlen)) { 3042 return -TARGET_EFAULT; 3043 } 3044 unlock_user(results, optval_addr, 0); 3045 break; 3046 } 3047 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 3048 default: 3049 goto unimplemented; 3050 } 3051 break; 3052 #endif /* SOL_NETLINK */ 3053 default: 3054 unimplemented: 3055 qemu_log_mask(LOG_UNIMP, 3056 "getsockopt level=%d optname=%d not yet supported\n", 3057 level, optname); 3058 ret = -TARGET_EOPNOTSUPP; 3059 break; 3060 } 3061 return ret; 3062 } 3063 3064 /* Convert target low/high pair representing file offset into the host 3065 * low/high pair. This function doesn't handle offsets bigger than 64 bits 3066 * as the kernel doesn't handle them either. 3067 */ 3068 static void target_to_host_low_high(abi_ulong tlow, 3069 abi_ulong thigh, 3070 unsigned long *hlow, 3071 unsigned long *hhigh) 3072 { 3073 uint64_t off = tlow | 3074 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) << 3075 TARGET_LONG_BITS / 2; 3076 3077 *hlow = off; 3078 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2; 3079 } 3080 3081 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 3082 abi_ulong count, int copy) 3083 { 3084 struct target_iovec *target_vec; 3085 struct iovec *vec; 3086 abi_ulong total_len, max_len; 3087 int i; 3088 int err = 0; 3089 bool bad_address = false; 3090 3091 if (count == 0) { 3092 errno = 0; 3093 return NULL; 3094 } 3095 if (count > IOV_MAX) { 3096 errno = EINVAL; 3097 return NULL; 3098 } 3099 3100 vec = g_try_new0(struct iovec, count); 3101 if (vec == NULL) { 3102 errno = ENOMEM; 3103 return NULL; 3104 } 3105 3106 target_vec = lock_user(VERIFY_READ, target_addr, 3107 count * sizeof(struct target_iovec), 1); 3108 if (target_vec == NULL) { 3109 err = EFAULT; 3110 goto fail2; 3111 } 3112 3113 /* ??? If host page size > target page size, this will result in a 3114 value larger than what we can actually support. */ 3115 max_len = 0x7fffffff & TARGET_PAGE_MASK; 3116 total_len = 0; 3117 3118 for (i = 0; i < count; i++) { 3119 abi_ulong base = tswapal(target_vec[i].iov_base); 3120 abi_long len = tswapal(target_vec[i].iov_len); 3121 3122 if (len < 0) { 3123 err = EINVAL; 3124 goto fail; 3125 } else if (len == 0) { 3126 /* Zero length pointer is ignored. */ 3127 vec[i].iov_base = 0; 3128 } else { 3129 vec[i].iov_base = lock_user(type, base, len, copy); 3130 /* If the first buffer pointer is bad, this is a fault. But 3131 * subsequent bad buffers will result in a partial write; this 3132 * is realized by filling the vector with null pointers and 3133 * zero lengths. */ 3134 if (!vec[i].iov_base) { 3135 if (i == 0) { 3136 err = EFAULT; 3137 goto fail; 3138 } else { 3139 bad_address = true; 3140 } 3141 } 3142 if (bad_address) { 3143 len = 0; 3144 } 3145 if (len > max_len - total_len) { 3146 len = max_len - total_len; 3147 } 3148 } 3149 vec[i].iov_len = len; 3150 total_len += len; 3151 } 3152 3153 unlock_user(target_vec, target_addr, 0); 3154 return vec; 3155 3156 fail: 3157 while (--i >= 0) { 3158 if (tswapal(target_vec[i].iov_len) > 0) { 3159 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 3160 } 3161 } 3162 unlock_user(target_vec, target_addr, 0); 3163 fail2: 3164 g_free(vec); 3165 errno = err; 3166 return NULL; 3167 } 3168 3169 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 3170 abi_ulong count, int copy) 3171 { 3172 struct target_iovec *target_vec; 3173 int i; 3174 3175 target_vec = lock_user(VERIFY_READ, target_addr, 3176 count * sizeof(struct target_iovec), 1); 3177 if (target_vec) { 3178 for (i = 0; i < count; i++) { 3179 abi_ulong base = tswapal(target_vec[i].iov_base); 3180 abi_long len = tswapal(target_vec[i].iov_len); 3181 if (len < 0) { 3182 break; 3183 } 3184 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 3185 } 3186 unlock_user(target_vec, target_addr, 0); 3187 } 3188 3189 g_free(vec); 3190 } 3191 3192 static inline int target_to_host_sock_type(int *type) 3193 { 3194 int host_type = 0; 3195 int target_type = *type; 3196 3197 switch (target_type & TARGET_SOCK_TYPE_MASK) { 3198 case TARGET_SOCK_DGRAM: 3199 host_type = SOCK_DGRAM; 3200 break; 3201 case TARGET_SOCK_STREAM: 3202 host_type = SOCK_STREAM; 3203 break; 3204 default: 3205 host_type = target_type & TARGET_SOCK_TYPE_MASK; 3206 break; 3207 } 3208 if (target_type & TARGET_SOCK_CLOEXEC) { 3209 #if defined(SOCK_CLOEXEC) 3210 host_type |= SOCK_CLOEXEC; 3211 #else 3212 return -TARGET_EINVAL; 3213 #endif 3214 } 3215 if (target_type & TARGET_SOCK_NONBLOCK) { 3216 #if defined(SOCK_NONBLOCK) 3217 host_type |= SOCK_NONBLOCK; 3218 #elif !defined(O_NONBLOCK) 3219 return -TARGET_EINVAL; 3220 #endif 3221 } 3222 *type = host_type; 3223 return 0; 3224 } 3225 3226 /* Try to emulate socket type flags after socket creation. */ 3227 static int sock_flags_fixup(int fd, int target_type) 3228 { 3229 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 3230 if (target_type & TARGET_SOCK_NONBLOCK) { 3231 int flags = fcntl(fd, F_GETFL); 3232 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 3233 close(fd); 3234 return -TARGET_EINVAL; 3235 } 3236 } 3237 #endif 3238 return fd; 3239 } 3240 3241 /* do_socket() Must return target values and target errnos. */ 3242 static abi_long do_socket(int domain, int type, int protocol) 3243 { 3244 int target_type = type; 3245 int ret; 3246 3247 ret = target_to_host_sock_type(&type); 3248 if (ret) { 3249 return ret; 3250 } 3251 3252 if (domain == PF_NETLINK && !( 3253 #ifdef CONFIG_RTNETLINK 3254 protocol == NETLINK_ROUTE || 3255 #endif 3256 protocol == NETLINK_KOBJECT_UEVENT || 3257 protocol == NETLINK_AUDIT)) { 3258 return -TARGET_EPROTONOSUPPORT; 3259 } 3260 3261 if (domain == AF_PACKET || 3262 (domain == AF_INET && type == SOCK_PACKET)) { 3263 protocol = tswap16(protocol); 3264 } 3265 3266 ret = get_errno(socket(domain, type, protocol)); 3267 if (ret >= 0) { 3268 ret = sock_flags_fixup(ret, target_type); 3269 if (type == SOCK_PACKET) { 3270 /* Manage an obsolete case : 3271 * if socket type is SOCK_PACKET, bind by name 3272 */ 3273 fd_trans_register(ret, &target_packet_trans); 3274 } else if (domain == PF_NETLINK) { 3275 switch (protocol) { 3276 #ifdef CONFIG_RTNETLINK 3277 case NETLINK_ROUTE: 3278 fd_trans_register(ret, &target_netlink_route_trans); 3279 break; 3280 #endif 3281 case NETLINK_KOBJECT_UEVENT: 3282 /* nothing to do: messages are strings */ 3283 break; 3284 case NETLINK_AUDIT: 3285 fd_trans_register(ret, &target_netlink_audit_trans); 3286 break; 3287 default: 3288 g_assert_not_reached(); 3289 } 3290 } 3291 } 3292 return ret; 3293 } 3294 3295 /* do_bind() Must return target values and target errnos. */ 3296 static abi_long do_bind(int sockfd, abi_ulong target_addr, 3297 socklen_t addrlen) 3298 { 3299 void *addr; 3300 abi_long ret; 3301 3302 if ((int)addrlen < 0) { 3303 return -TARGET_EINVAL; 3304 } 3305 3306 addr = alloca(addrlen+1); 3307 3308 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3309 if (ret) 3310 return ret; 3311 3312 return get_errno(bind(sockfd, addr, addrlen)); 3313 } 3314 3315 /* do_connect() Must return target values and target errnos. */ 3316 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3317 socklen_t addrlen) 3318 { 3319 void *addr; 3320 abi_long ret; 3321 3322 if ((int)addrlen < 0) { 3323 return -TARGET_EINVAL; 3324 } 3325 3326 addr = alloca(addrlen+1); 3327 3328 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3329 if (ret) 3330 return ret; 3331 3332 return get_errno(safe_connect(sockfd, addr, addrlen)); 3333 } 3334 3335 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3336 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3337 int flags, int send) 3338 { 3339 abi_long ret, len; 3340 struct msghdr msg; 3341 abi_ulong count; 3342 struct iovec *vec; 3343 abi_ulong target_vec; 3344 3345 if (msgp->msg_name) { 3346 msg.msg_namelen = tswap32(msgp->msg_namelen); 3347 msg.msg_name = alloca(msg.msg_namelen+1); 3348 ret = target_to_host_sockaddr(fd, msg.msg_name, 3349 tswapal(msgp->msg_name), 3350 msg.msg_namelen); 3351 if (ret == -TARGET_EFAULT) { 3352 /* For connected sockets msg_name and msg_namelen must 3353 * be ignored, so returning EFAULT immediately is wrong. 3354 * Instead, pass a bad msg_name to the host kernel, and 3355 * let it decide whether to return EFAULT or not. 3356 */ 3357 msg.msg_name = (void *)-1; 3358 } else if (ret) { 3359 goto out2; 3360 } 3361 } else { 3362 msg.msg_name = NULL; 3363 msg.msg_namelen = 0; 3364 } 3365 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3366 msg.msg_control = alloca(msg.msg_controllen); 3367 memset(msg.msg_control, 0, msg.msg_controllen); 3368 3369 msg.msg_flags = tswap32(msgp->msg_flags); 3370 3371 count = tswapal(msgp->msg_iovlen); 3372 target_vec = tswapal(msgp->msg_iov); 3373 3374 if (count > IOV_MAX) { 3375 /* sendrcvmsg returns a different errno for this condition than 3376 * readv/writev, so we must catch it here before lock_iovec() does. 3377 */ 3378 ret = -TARGET_EMSGSIZE; 3379 goto out2; 3380 } 3381 3382 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3383 target_vec, count, send); 3384 if (vec == NULL) { 3385 ret = -host_to_target_errno(errno); 3386 goto out2; 3387 } 3388 msg.msg_iovlen = count; 3389 msg.msg_iov = vec; 3390 3391 if (send) { 3392 if (fd_trans_target_to_host_data(fd)) { 3393 void *host_msg; 3394 3395 host_msg = g_malloc(msg.msg_iov->iov_len); 3396 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3397 ret = fd_trans_target_to_host_data(fd)(host_msg, 3398 msg.msg_iov->iov_len); 3399 if (ret >= 0) { 3400 msg.msg_iov->iov_base = host_msg; 3401 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3402 } 3403 g_free(host_msg); 3404 } else { 3405 ret = target_to_host_cmsg(&msg, msgp); 3406 if (ret == 0) { 3407 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3408 } 3409 } 3410 } else { 3411 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3412 if (!is_error(ret)) { 3413 len = ret; 3414 if (fd_trans_host_to_target_data(fd)) { 3415 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3416 MIN(msg.msg_iov->iov_len, len)); 3417 } else { 3418 ret = host_to_target_cmsg(msgp, &msg); 3419 } 3420 if (!is_error(ret)) { 3421 msgp->msg_namelen = tswap32(msg.msg_namelen); 3422 msgp->msg_flags = tswap32(msg.msg_flags); 3423 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3424 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3425 msg.msg_name, msg.msg_namelen); 3426 if (ret) { 3427 goto out; 3428 } 3429 } 3430 3431 ret = len; 3432 } 3433 } 3434 } 3435 3436 out: 3437 unlock_iovec(vec, target_vec, count, !send); 3438 out2: 3439 return ret; 3440 } 3441 3442 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3443 int flags, int send) 3444 { 3445 abi_long ret; 3446 struct target_msghdr *msgp; 3447 3448 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3449 msgp, 3450 target_msg, 3451 send ? 1 : 0)) { 3452 return -TARGET_EFAULT; 3453 } 3454 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3455 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3456 return ret; 3457 } 3458 3459 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3460 * so it might not have this *mmsg-specific flag either. 3461 */ 3462 #ifndef MSG_WAITFORONE 3463 #define MSG_WAITFORONE 0x10000 3464 #endif 3465 3466 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3467 unsigned int vlen, unsigned int flags, 3468 int send) 3469 { 3470 struct target_mmsghdr *mmsgp; 3471 abi_long ret = 0; 3472 int i; 3473 3474 if (vlen > UIO_MAXIOV) { 3475 vlen = UIO_MAXIOV; 3476 } 3477 3478 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3479 if (!mmsgp) { 3480 return -TARGET_EFAULT; 3481 } 3482 3483 for (i = 0; i < vlen; i++) { 3484 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3485 if (is_error(ret)) { 3486 break; 3487 } 3488 mmsgp[i].msg_len = tswap32(ret); 3489 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3490 if (flags & MSG_WAITFORONE) { 3491 flags |= MSG_DONTWAIT; 3492 } 3493 } 3494 3495 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3496 3497 /* Return number of datagrams sent if we sent any at all; 3498 * otherwise return the error. 3499 */ 3500 if (i) { 3501 return i; 3502 } 3503 return ret; 3504 } 3505 3506 /* do_accept4() Must return target values and target errnos. */ 3507 static abi_long do_accept4(int fd, abi_ulong target_addr, 3508 abi_ulong target_addrlen_addr, int flags) 3509 { 3510 socklen_t addrlen, ret_addrlen; 3511 void *addr; 3512 abi_long ret; 3513 int host_flags; 3514 3515 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 3516 3517 if (target_addr == 0) { 3518 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3519 } 3520 3521 /* linux returns EFAULT if addrlen pointer is invalid */ 3522 if (get_user_u32(addrlen, target_addrlen_addr)) 3523 return -TARGET_EFAULT; 3524 3525 if ((int)addrlen < 0) { 3526 return -TARGET_EINVAL; 3527 } 3528 3529 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3530 return -TARGET_EFAULT; 3531 } 3532 3533 addr = alloca(addrlen); 3534 3535 ret_addrlen = addrlen; 3536 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags)); 3537 if (!is_error(ret)) { 3538 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3539 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3540 ret = -TARGET_EFAULT; 3541 } 3542 } 3543 return ret; 3544 } 3545 3546 /* do_getpeername() Must return target values and target errnos. */ 3547 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3548 abi_ulong target_addrlen_addr) 3549 { 3550 socklen_t addrlen, ret_addrlen; 3551 void *addr; 3552 abi_long ret; 3553 3554 if (get_user_u32(addrlen, target_addrlen_addr)) 3555 return -TARGET_EFAULT; 3556 3557 if ((int)addrlen < 0) { 3558 return -TARGET_EINVAL; 3559 } 3560 3561 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3562 return -TARGET_EFAULT; 3563 } 3564 3565 addr = alloca(addrlen); 3566 3567 ret_addrlen = addrlen; 3568 ret = get_errno(getpeername(fd, addr, &ret_addrlen)); 3569 if (!is_error(ret)) { 3570 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3571 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3572 ret = -TARGET_EFAULT; 3573 } 3574 } 3575 return ret; 3576 } 3577 3578 /* do_getsockname() Must return target values and target errnos. */ 3579 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3580 abi_ulong target_addrlen_addr) 3581 { 3582 socklen_t addrlen, ret_addrlen; 3583 void *addr; 3584 abi_long ret; 3585 3586 if (get_user_u32(addrlen, target_addrlen_addr)) 3587 return -TARGET_EFAULT; 3588 3589 if ((int)addrlen < 0) { 3590 return -TARGET_EINVAL; 3591 } 3592 3593 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3594 return -TARGET_EFAULT; 3595 } 3596 3597 addr = alloca(addrlen); 3598 3599 ret_addrlen = addrlen; 3600 ret = get_errno(getsockname(fd, addr, &ret_addrlen)); 3601 if (!is_error(ret)) { 3602 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3603 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3604 ret = -TARGET_EFAULT; 3605 } 3606 } 3607 return ret; 3608 } 3609 3610 /* do_socketpair() Must return target values and target errnos. */ 3611 static abi_long do_socketpair(int domain, int type, int protocol, 3612 abi_ulong target_tab_addr) 3613 { 3614 int tab[2]; 3615 abi_long ret; 3616 3617 target_to_host_sock_type(&type); 3618 3619 ret = get_errno(socketpair(domain, type, protocol, tab)); 3620 if (!is_error(ret)) { 3621 if (put_user_s32(tab[0], target_tab_addr) 3622 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3623 ret = -TARGET_EFAULT; 3624 } 3625 return ret; 3626 } 3627 3628 /* do_sendto() Must return target values and target errnos. */ 3629 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3630 abi_ulong target_addr, socklen_t addrlen) 3631 { 3632 void *addr; 3633 void *host_msg; 3634 void *copy_msg = NULL; 3635 abi_long ret; 3636 3637 if ((int)addrlen < 0) { 3638 return -TARGET_EINVAL; 3639 } 3640 3641 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3642 if (!host_msg) 3643 return -TARGET_EFAULT; 3644 if (fd_trans_target_to_host_data(fd)) { 3645 copy_msg = host_msg; 3646 host_msg = g_malloc(len); 3647 memcpy(host_msg, copy_msg, len); 3648 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3649 if (ret < 0) { 3650 goto fail; 3651 } 3652 } 3653 if (target_addr) { 3654 addr = alloca(addrlen+1); 3655 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3656 if (ret) { 3657 goto fail; 3658 } 3659 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3660 } else { 3661 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3662 } 3663 fail: 3664 if (copy_msg) { 3665 g_free(host_msg); 3666 host_msg = copy_msg; 3667 } 3668 unlock_user(host_msg, msg, 0); 3669 return ret; 3670 } 3671 3672 /* do_recvfrom() Must return target values and target errnos. */ 3673 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 3674 abi_ulong target_addr, 3675 abi_ulong target_addrlen) 3676 { 3677 socklen_t addrlen, ret_addrlen; 3678 void *addr; 3679 void *host_msg; 3680 abi_long ret; 3681 3682 if (!msg) { 3683 host_msg = NULL; 3684 } else { 3685 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 3686 if (!host_msg) { 3687 return -TARGET_EFAULT; 3688 } 3689 } 3690 if (target_addr) { 3691 if (get_user_u32(addrlen, target_addrlen)) { 3692 ret = -TARGET_EFAULT; 3693 goto fail; 3694 } 3695 if ((int)addrlen < 0) { 3696 ret = -TARGET_EINVAL; 3697 goto fail; 3698 } 3699 addr = alloca(addrlen); 3700 ret_addrlen = addrlen; 3701 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 3702 addr, &ret_addrlen)); 3703 } else { 3704 addr = NULL; /* To keep compiler quiet. */ 3705 addrlen = 0; /* To keep compiler quiet. */ 3706 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 3707 } 3708 if (!is_error(ret)) { 3709 if (fd_trans_host_to_target_data(fd)) { 3710 abi_long trans; 3711 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len)); 3712 if (is_error(trans)) { 3713 ret = trans; 3714 goto fail; 3715 } 3716 } 3717 if (target_addr) { 3718 host_to_target_sockaddr(target_addr, addr, 3719 MIN(addrlen, ret_addrlen)); 3720 if (put_user_u32(ret_addrlen, target_addrlen)) { 3721 ret = -TARGET_EFAULT; 3722 goto fail; 3723 } 3724 } 3725 unlock_user(host_msg, msg, len); 3726 } else { 3727 fail: 3728 unlock_user(host_msg, msg, 0); 3729 } 3730 return ret; 3731 } 3732 3733 #ifdef TARGET_NR_socketcall 3734 /* do_socketcall() must return target values and target errnos. */ 3735 static abi_long do_socketcall(int num, abi_ulong vptr) 3736 { 3737 static const unsigned nargs[] = { /* number of arguments per operation */ 3738 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 3739 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 3740 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 3741 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 3742 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 3743 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 3744 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 3745 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 3746 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 3747 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 3748 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 3749 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 3750 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 3751 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3752 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3753 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 3754 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 3755 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 3756 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 3757 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 3758 }; 3759 abi_long a[6]; /* max 6 args */ 3760 unsigned i; 3761 3762 /* check the range of the first argument num */ 3763 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 3764 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 3765 return -TARGET_EINVAL; 3766 } 3767 /* ensure we have space for args */ 3768 if (nargs[num] > ARRAY_SIZE(a)) { 3769 return -TARGET_EINVAL; 3770 } 3771 /* collect the arguments in a[] according to nargs[] */ 3772 for (i = 0; i < nargs[num]; ++i) { 3773 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 3774 return -TARGET_EFAULT; 3775 } 3776 } 3777 /* now when we have the args, invoke the appropriate underlying function */ 3778 switch (num) { 3779 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 3780 return do_socket(a[0], a[1], a[2]); 3781 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 3782 return do_bind(a[0], a[1], a[2]); 3783 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 3784 return do_connect(a[0], a[1], a[2]); 3785 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 3786 return get_errno(listen(a[0], a[1])); 3787 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 3788 return do_accept4(a[0], a[1], a[2], 0); 3789 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 3790 return do_getsockname(a[0], a[1], a[2]); 3791 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 3792 return do_getpeername(a[0], a[1], a[2]); 3793 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 3794 return do_socketpair(a[0], a[1], a[2], a[3]); 3795 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 3796 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 3797 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 3798 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 3799 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 3800 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 3801 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 3802 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 3803 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 3804 return get_errno(shutdown(a[0], a[1])); 3805 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3806 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 3807 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3808 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 3809 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 3810 return do_sendrecvmsg(a[0], a[1], a[2], 1); 3811 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 3812 return do_sendrecvmsg(a[0], a[1], a[2], 0); 3813 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 3814 return do_accept4(a[0], a[1], a[2], a[3]); 3815 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 3816 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 3817 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 3818 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 3819 default: 3820 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); 3821 return -TARGET_EINVAL; 3822 } 3823 } 3824 #endif 3825 3826 #define N_SHM_REGIONS 32 3827 3828 static struct shm_region { 3829 abi_ulong start; 3830 abi_ulong size; 3831 bool in_use; 3832 } shm_regions[N_SHM_REGIONS]; 3833 3834 #ifndef TARGET_SEMID64_DS 3835 /* asm-generic version of this struct */ 3836 struct target_semid64_ds 3837 { 3838 struct target_ipc_perm sem_perm; 3839 abi_ulong sem_otime; 3840 #if TARGET_ABI_BITS == 32 3841 abi_ulong __unused1; 3842 #endif 3843 abi_ulong sem_ctime; 3844 #if TARGET_ABI_BITS == 32 3845 abi_ulong __unused2; 3846 #endif 3847 abi_ulong sem_nsems; 3848 abi_ulong __unused3; 3849 abi_ulong __unused4; 3850 }; 3851 #endif 3852 3853 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 3854 abi_ulong target_addr) 3855 { 3856 struct target_ipc_perm *target_ip; 3857 struct target_semid64_ds *target_sd; 3858 3859 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3860 return -TARGET_EFAULT; 3861 target_ip = &(target_sd->sem_perm); 3862 host_ip->__key = tswap32(target_ip->__key); 3863 host_ip->uid = tswap32(target_ip->uid); 3864 host_ip->gid = tswap32(target_ip->gid); 3865 host_ip->cuid = tswap32(target_ip->cuid); 3866 host_ip->cgid = tswap32(target_ip->cgid); 3867 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3868 host_ip->mode = tswap32(target_ip->mode); 3869 #else 3870 host_ip->mode = tswap16(target_ip->mode); 3871 #endif 3872 #if defined(TARGET_PPC) 3873 host_ip->__seq = tswap32(target_ip->__seq); 3874 #else 3875 host_ip->__seq = tswap16(target_ip->__seq); 3876 #endif 3877 unlock_user_struct(target_sd, target_addr, 0); 3878 return 0; 3879 } 3880 3881 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 3882 struct ipc_perm *host_ip) 3883 { 3884 struct target_ipc_perm *target_ip; 3885 struct target_semid64_ds *target_sd; 3886 3887 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3888 return -TARGET_EFAULT; 3889 target_ip = &(target_sd->sem_perm); 3890 target_ip->__key = tswap32(host_ip->__key); 3891 target_ip->uid = tswap32(host_ip->uid); 3892 target_ip->gid = tswap32(host_ip->gid); 3893 target_ip->cuid = tswap32(host_ip->cuid); 3894 target_ip->cgid = tswap32(host_ip->cgid); 3895 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3896 target_ip->mode = tswap32(host_ip->mode); 3897 #else 3898 target_ip->mode = tswap16(host_ip->mode); 3899 #endif 3900 #if defined(TARGET_PPC) 3901 target_ip->__seq = tswap32(host_ip->__seq); 3902 #else 3903 target_ip->__seq = tswap16(host_ip->__seq); 3904 #endif 3905 unlock_user_struct(target_sd, target_addr, 1); 3906 return 0; 3907 } 3908 3909 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 3910 abi_ulong target_addr) 3911 { 3912 struct target_semid64_ds *target_sd; 3913 3914 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3915 return -TARGET_EFAULT; 3916 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 3917 return -TARGET_EFAULT; 3918 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 3919 host_sd->sem_otime = tswapal(target_sd->sem_otime); 3920 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 3921 unlock_user_struct(target_sd, target_addr, 0); 3922 return 0; 3923 } 3924 3925 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 3926 struct semid_ds *host_sd) 3927 { 3928 struct target_semid64_ds *target_sd; 3929 3930 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3931 return -TARGET_EFAULT; 3932 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 3933 return -TARGET_EFAULT; 3934 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 3935 target_sd->sem_otime = tswapal(host_sd->sem_otime); 3936 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 3937 unlock_user_struct(target_sd, target_addr, 1); 3938 return 0; 3939 } 3940 3941 struct target_seminfo { 3942 int semmap; 3943 int semmni; 3944 int semmns; 3945 int semmnu; 3946 int semmsl; 3947 int semopm; 3948 int semume; 3949 int semusz; 3950 int semvmx; 3951 int semaem; 3952 }; 3953 3954 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 3955 struct seminfo *host_seminfo) 3956 { 3957 struct target_seminfo *target_seminfo; 3958 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 3959 return -TARGET_EFAULT; 3960 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 3961 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 3962 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 3963 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 3964 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 3965 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 3966 __put_user(host_seminfo->semume, &target_seminfo->semume); 3967 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 3968 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 3969 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 3970 unlock_user_struct(target_seminfo, target_addr, 1); 3971 return 0; 3972 } 3973 3974 union semun { 3975 int val; 3976 struct semid_ds *buf; 3977 unsigned short *array; 3978 struct seminfo *__buf; 3979 }; 3980 3981 union target_semun { 3982 int val; 3983 abi_ulong buf; 3984 abi_ulong array; 3985 abi_ulong __buf; 3986 }; 3987 3988 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 3989 abi_ulong target_addr) 3990 { 3991 int nsems; 3992 unsigned short *array; 3993 union semun semun; 3994 struct semid_ds semid_ds; 3995 int i, ret; 3996 3997 semun.buf = &semid_ds; 3998 3999 ret = semctl(semid, 0, IPC_STAT, semun); 4000 if (ret == -1) 4001 return get_errno(ret); 4002 4003 nsems = semid_ds.sem_nsems; 4004 4005 *host_array = g_try_new(unsigned short, nsems); 4006 if (!*host_array) { 4007 return -TARGET_ENOMEM; 4008 } 4009 array = lock_user(VERIFY_READ, target_addr, 4010 nsems*sizeof(unsigned short), 1); 4011 if (!array) { 4012 g_free(*host_array); 4013 return -TARGET_EFAULT; 4014 } 4015 4016 for(i=0; i<nsems; i++) { 4017 __get_user((*host_array)[i], &array[i]); 4018 } 4019 unlock_user(array, target_addr, 0); 4020 4021 return 0; 4022 } 4023 4024 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 4025 unsigned short **host_array) 4026 { 4027 int nsems; 4028 unsigned short *array; 4029 union semun semun; 4030 struct semid_ds semid_ds; 4031 int i, ret; 4032 4033 semun.buf = &semid_ds; 4034 4035 ret = semctl(semid, 0, IPC_STAT, semun); 4036 if (ret == -1) 4037 return get_errno(ret); 4038 4039 nsems = semid_ds.sem_nsems; 4040 4041 array = lock_user(VERIFY_WRITE, target_addr, 4042 nsems*sizeof(unsigned short), 0); 4043 if (!array) 4044 return -TARGET_EFAULT; 4045 4046 for(i=0; i<nsems; i++) { 4047 __put_user((*host_array)[i], &array[i]); 4048 } 4049 g_free(*host_array); 4050 unlock_user(array, target_addr, 1); 4051 4052 return 0; 4053 } 4054 4055 static inline abi_long do_semctl(int semid, int semnum, int cmd, 4056 abi_ulong target_arg) 4057 { 4058 union target_semun target_su = { .buf = target_arg }; 4059 union semun arg; 4060 struct semid_ds dsarg; 4061 unsigned short *array = NULL; 4062 struct seminfo seminfo; 4063 abi_long ret = -TARGET_EINVAL; 4064 abi_long err; 4065 cmd &= 0xff; 4066 4067 switch( cmd ) { 4068 case GETVAL: 4069 case SETVAL: 4070 /* In 64 bit cross-endian situations, we will erroneously pick up 4071 * the wrong half of the union for the "val" element. To rectify 4072 * this, the entire 8-byte structure is byteswapped, followed by 4073 * a swap of the 4 byte val field. In other cases, the data is 4074 * already in proper host byte order. */ 4075 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 4076 target_su.buf = tswapal(target_su.buf); 4077 arg.val = tswap32(target_su.val); 4078 } else { 4079 arg.val = target_su.val; 4080 } 4081 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4082 break; 4083 case GETALL: 4084 case SETALL: 4085 err = target_to_host_semarray(semid, &array, target_su.array); 4086 if (err) 4087 return err; 4088 arg.array = array; 4089 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4090 err = host_to_target_semarray(semid, target_su.array, &array); 4091 if (err) 4092 return err; 4093 break; 4094 case IPC_STAT: 4095 case IPC_SET: 4096 case SEM_STAT: 4097 err = target_to_host_semid_ds(&dsarg, target_su.buf); 4098 if (err) 4099 return err; 4100 arg.buf = &dsarg; 4101 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4102 err = host_to_target_semid_ds(target_su.buf, &dsarg); 4103 if (err) 4104 return err; 4105 break; 4106 case IPC_INFO: 4107 case SEM_INFO: 4108 arg.__buf = &seminfo; 4109 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4110 err = host_to_target_seminfo(target_su.__buf, &seminfo); 4111 if (err) 4112 return err; 4113 break; 4114 case IPC_RMID: 4115 case GETPID: 4116 case GETNCNT: 4117 case GETZCNT: 4118 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 4119 break; 4120 } 4121 4122 return ret; 4123 } 4124 4125 struct target_sembuf { 4126 unsigned short sem_num; 4127 short sem_op; 4128 short sem_flg; 4129 }; 4130 4131 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 4132 abi_ulong target_addr, 4133 unsigned nsops) 4134 { 4135 struct target_sembuf *target_sembuf; 4136 int i; 4137 4138 target_sembuf = lock_user(VERIFY_READ, target_addr, 4139 nsops*sizeof(struct target_sembuf), 1); 4140 if (!target_sembuf) 4141 return -TARGET_EFAULT; 4142 4143 for(i=0; i<nsops; i++) { 4144 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 4145 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 4146 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 4147 } 4148 4149 unlock_user(target_sembuf, target_addr, 0); 4150 4151 return 0; 4152 } 4153 4154 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \ 4155 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64) 4156 4157 /* 4158 * This macro is required to handle the s390 variants, which passes the 4159 * arguments in a different order than default. 4160 */ 4161 #ifdef __s390x__ 4162 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4163 (__nsops), (__timeout), (__sops) 4164 #else 4165 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4166 (__nsops), 0, (__sops), (__timeout) 4167 #endif 4168 4169 static inline abi_long do_semtimedop(int semid, 4170 abi_long ptr, 4171 unsigned nsops, 4172 abi_long timeout, bool time64) 4173 { 4174 struct sembuf *sops; 4175 struct timespec ts, *pts = NULL; 4176 abi_long ret; 4177 4178 if (timeout) { 4179 pts = &ts; 4180 if (time64) { 4181 if (target_to_host_timespec64(pts, timeout)) { 4182 return -TARGET_EFAULT; 4183 } 4184 } else { 4185 if (target_to_host_timespec(pts, timeout)) { 4186 return -TARGET_EFAULT; 4187 } 4188 } 4189 } 4190 4191 if (nsops > TARGET_SEMOPM) { 4192 return -TARGET_E2BIG; 4193 } 4194 4195 sops = g_new(struct sembuf, nsops); 4196 4197 if (target_to_host_sembuf(sops, ptr, nsops)) { 4198 g_free(sops); 4199 return -TARGET_EFAULT; 4200 } 4201 4202 ret = -TARGET_ENOSYS; 4203 #ifdef __NR_semtimedop 4204 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts)); 4205 #endif 4206 #ifdef __NR_ipc 4207 if (ret == -TARGET_ENOSYS) { 4208 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, 4209 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts))); 4210 } 4211 #endif 4212 g_free(sops); 4213 return ret; 4214 } 4215 #endif 4216 4217 struct target_msqid_ds 4218 { 4219 struct target_ipc_perm msg_perm; 4220 abi_ulong msg_stime; 4221 #if TARGET_ABI_BITS == 32 4222 abi_ulong __unused1; 4223 #endif 4224 abi_ulong msg_rtime; 4225 #if TARGET_ABI_BITS == 32 4226 abi_ulong __unused2; 4227 #endif 4228 abi_ulong msg_ctime; 4229 #if TARGET_ABI_BITS == 32 4230 abi_ulong __unused3; 4231 #endif 4232 abi_ulong __msg_cbytes; 4233 abi_ulong msg_qnum; 4234 abi_ulong msg_qbytes; 4235 abi_ulong msg_lspid; 4236 abi_ulong msg_lrpid; 4237 abi_ulong __unused4; 4238 abi_ulong __unused5; 4239 }; 4240 4241 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 4242 abi_ulong target_addr) 4243 { 4244 struct target_msqid_ds *target_md; 4245 4246 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 4247 return -TARGET_EFAULT; 4248 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 4249 return -TARGET_EFAULT; 4250 host_md->msg_stime = tswapal(target_md->msg_stime); 4251 host_md->msg_rtime = tswapal(target_md->msg_rtime); 4252 host_md->msg_ctime = tswapal(target_md->msg_ctime); 4253 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 4254 host_md->msg_qnum = tswapal(target_md->msg_qnum); 4255 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 4256 host_md->msg_lspid = tswapal(target_md->msg_lspid); 4257 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 4258 unlock_user_struct(target_md, target_addr, 0); 4259 return 0; 4260 } 4261 4262 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 4263 struct msqid_ds *host_md) 4264 { 4265 struct target_msqid_ds *target_md; 4266 4267 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 4268 return -TARGET_EFAULT; 4269 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 4270 return -TARGET_EFAULT; 4271 target_md->msg_stime = tswapal(host_md->msg_stime); 4272 target_md->msg_rtime = tswapal(host_md->msg_rtime); 4273 target_md->msg_ctime = tswapal(host_md->msg_ctime); 4274 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 4275 target_md->msg_qnum = tswapal(host_md->msg_qnum); 4276 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 4277 target_md->msg_lspid = tswapal(host_md->msg_lspid); 4278 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 4279 unlock_user_struct(target_md, target_addr, 1); 4280 return 0; 4281 } 4282 4283 struct target_msginfo { 4284 int msgpool; 4285 int msgmap; 4286 int msgmax; 4287 int msgmnb; 4288 int msgmni; 4289 int msgssz; 4290 int msgtql; 4291 unsigned short int msgseg; 4292 }; 4293 4294 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 4295 struct msginfo *host_msginfo) 4296 { 4297 struct target_msginfo *target_msginfo; 4298 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 4299 return -TARGET_EFAULT; 4300 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 4301 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 4302 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 4303 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 4304 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 4305 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 4306 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 4307 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 4308 unlock_user_struct(target_msginfo, target_addr, 1); 4309 return 0; 4310 } 4311 4312 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 4313 { 4314 struct msqid_ds dsarg; 4315 struct msginfo msginfo; 4316 abi_long ret = -TARGET_EINVAL; 4317 4318 cmd &= 0xff; 4319 4320 switch (cmd) { 4321 case IPC_STAT: 4322 case IPC_SET: 4323 case MSG_STAT: 4324 if (target_to_host_msqid_ds(&dsarg,ptr)) 4325 return -TARGET_EFAULT; 4326 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4327 if (host_to_target_msqid_ds(ptr,&dsarg)) 4328 return -TARGET_EFAULT; 4329 break; 4330 case IPC_RMID: 4331 ret = get_errno(msgctl(msgid, cmd, NULL)); 4332 break; 4333 case IPC_INFO: 4334 case MSG_INFO: 4335 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4336 if (host_to_target_msginfo(ptr, &msginfo)) 4337 return -TARGET_EFAULT; 4338 break; 4339 } 4340 4341 return ret; 4342 } 4343 4344 struct target_msgbuf { 4345 abi_long mtype; 4346 char mtext[1]; 4347 }; 4348 4349 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4350 ssize_t msgsz, int msgflg) 4351 { 4352 struct target_msgbuf *target_mb; 4353 struct msgbuf *host_mb; 4354 abi_long ret = 0; 4355 4356 if (msgsz < 0) { 4357 return -TARGET_EINVAL; 4358 } 4359 4360 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4361 return -TARGET_EFAULT; 4362 host_mb = g_try_malloc(msgsz + sizeof(long)); 4363 if (!host_mb) { 4364 unlock_user_struct(target_mb, msgp, 0); 4365 return -TARGET_ENOMEM; 4366 } 4367 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4368 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4369 ret = -TARGET_ENOSYS; 4370 #ifdef __NR_msgsnd 4371 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4372 #endif 4373 #ifdef __NR_ipc 4374 if (ret == -TARGET_ENOSYS) { 4375 #ifdef __s390x__ 4376 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4377 host_mb)); 4378 #else 4379 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4380 host_mb, 0)); 4381 #endif 4382 } 4383 #endif 4384 g_free(host_mb); 4385 unlock_user_struct(target_mb, msgp, 0); 4386 4387 return ret; 4388 } 4389 4390 #ifdef __NR_ipc 4391 #if defined(__sparc__) 4392 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */ 4393 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp 4394 #elif defined(__s390x__) 4395 /* The s390 sys_ipc variant has only five parameters. */ 4396 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4397 ((long int[]){(long int)__msgp, __msgtyp}) 4398 #else 4399 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4400 ((long int[]){(long int)__msgp, __msgtyp}), 0 4401 #endif 4402 #endif 4403 4404 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4405 ssize_t msgsz, abi_long msgtyp, 4406 int msgflg) 4407 { 4408 struct target_msgbuf *target_mb; 4409 char *target_mtext; 4410 struct msgbuf *host_mb; 4411 abi_long ret = 0; 4412 4413 if (msgsz < 0) { 4414 return -TARGET_EINVAL; 4415 } 4416 4417 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4418 return -TARGET_EFAULT; 4419 4420 host_mb = g_try_malloc(msgsz + sizeof(long)); 4421 if (!host_mb) { 4422 ret = -TARGET_ENOMEM; 4423 goto end; 4424 } 4425 ret = -TARGET_ENOSYS; 4426 #ifdef __NR_msgrcv 4427 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4428 #endif 4429 #ifdef __NR_ipc 4430 if (ret == -TARGET_ENOSYS) { 4431 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz, 4432 msgflg, MSGRCV_ARGS(host_mb, msgtyp))); 4433 } 4434 #endif 4435 4436 if (ret > 0) { 4437 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4438 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4439 if (!target_mtext) { 4440 ret = -TARGET_EFAULT; 4441 goto end; 4442 } 4443 memcpy(target_mb->mtext, host_mb->mtext, ret); 4444 unlock_user(target_mtext, target_mtext_addr, ret); 4445 } 4446 4447 target_mb->mtype = tswapal(host_mb->mtype); 4448 4449 end: 4450 if (target_mb) 4451 unlock_user_struct(target_mb, msgp, 1); 4452 g_free(host_mb); 4453 return ret; 4454 } 4455 4456 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4457 abi_ulong target_addr) 4458 { 4459 struct target_shmid_ds *target_sd; 4460 4461 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4462 return -TARGET_EFAULT; 4463 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4464 return -TARGET_EFAULT; 4465 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4466 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4467 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4468 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4469 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4470 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4471 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4472 unlock_user_struct(target_sd, target_addr, 0); 4473 return 0; 4474 } 4475 4476 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4477 struct shmid_ds *host_sd) 4478 { 4479 struct target_shmid_ds *target_sd; 4480 4481 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4482 return -TARGET_EFAULT; 4483 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4484 return -TARGET_EFAULT; 4485 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4486 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4487 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4488 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4489 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4490 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4491 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4492 unlock_user_struct(target_sd, target_addr, 1); 4493 return 0; 4494 } 4495 4496 struct target_shminfo { 4497 abi_ulong shmmax; 4498 abi_ulong shmmin; 4499 abi_ulong shmmni; 4500 abi_ulong shmseg; 4501 abi_ulong shmall; 4502 }; 4503 4504 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4505 struct shminfo *host_shminfo) 4506 { 4507 struct target_shminfo *target_shminfo; 4508 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4509 return -TARGET_EFAULT; 4510 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4511 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4512 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4513 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4514 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4515 unlock_user_struct(target_shminfo, target_addr, 1); 4516 return 0; 4517 } 4518 4519 struct target_shm_info { 4520 int used_ids; 4521 abi_ulong shm_tot; 4522 abi_ulong shm_rss; 4523 abi_ulong shm_swp; 4524 abi_ulong swap_attempts; 4525 abi_ulong swap_successes; 4526 }; 4527 4528 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4529 struct shm_info *host_shm_info) 4530 { 4531 struct target_shm_info *target_shm_info; 4532 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4533 return -TARGET_EFAULT; 4534 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4535 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4536 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4537 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4538 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4539 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4540 unlock_user_struct(target_shm_info, target_addr, 1); 4541 return 0; 4542 } 4543 4544 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4545 { 4546 struct shmid_ds dsarg; 4547 struct shminfo shminfo; 4548 struct shm_info shm_info; 4549 abi_long ret = -TARGET_EINVAL; 4550 4551 cmd &= 0xff; 4552 4553 switch(cmd) { 4554 case IPC_STAT: 4555 case IPC_SET: 4556 case SHM_STAT: 4557 if (target_to_host_shmid_ds(&dsarg, buf)) 4558 return -TARGET_EFAULT; 4559 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4560 if (host_to_target_shmid_ds(buf, &dsarg)) 4561 return -TARGET_EFAULT; 4562 break; 4563 case IPC_INFO: 4564 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4565 if (host_to_target_shminfo(buf, &shminfo)) 4566 return -TARGET_EFAULT; 4567 break; 4568 case SHM_INFO: 4569 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4570 if (host_to_target_shm_info(buf, &shm_info)) 4571 return -TARGET_EFAULT; 4572 break; 4573 case IPC_RMID: 4574 case SHM_LOCK: 4575 case SHM_UNLOCK: 4576 ret = get_errno(shmctl(shmid, cmd, NULL)); 4577 break; 4578 } 4579 4580 return ret; 4581 } 4582 4583 #ifndef TARGET_FORCE_SHMLBA 4584 /* For most architectures, SHMLBA is the same as the page size; 4585 * some architectures have larger values, in which case they should 4586 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4587 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4588 * and defining its own value for SHMLBA. 4589 * 4590 * The kernel also permits SHMLBA to be set by the architecture to a 4591 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4592 * this means that addresses are rounded to the large size if 4593 * SHM_RND is set but addresses not aligned to that size are not rejected 4594 * as long as they are at least page-aligned. Since the only architecture 4595 * which uses this is ia64 this code doesn't provide for that oddity. 4596 */ 4597 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4598 { 4599 return TARGET_PAGE_SIZE; 4600 } 4601 #endif 4602 4603 static inline abi_ulong do_shmat(CPUArchState *cpu_env, 4604 int shmid, abi_ulong shmaddr, int shmflg) 4605 { 4606 abi_long raddr; 4607 void *host_raddr; 4608 struct shmid_ds shm_info; 4609 int i,ret; 4610 abi_ulong shmlba; 4611 4612 /* shmat pointers are always untagged */ 4613 4614 /* find out the length of the shared memory segment */ 4615 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4616 if (is_error(ret)) { 4617 /* can't get length, bail out */ 4618 return ret; 4619 } 4620 4621 shmlba = target_shmlba(cpu_env); 4622 4623 if (shmaddr & (shmlba - 1)) { 4624 if (shmflg & SHM_RND) { 4625 shmaddr &= ~(shmlba - 1); 4626 } else { 4627 return -TARGET_EINVAL; 4628 } 4629 } 4630 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { 4631 return -TARGET_EINVAL; 4632 } 4633 4634 mmap_lock(); 4635 4636 if (shmaddr) 4637 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); 4638 else { 4639 abi_ulong mmap_start; 4640 4641 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4642 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4643 4644 if (mmap_start == -1) { 4645 errno = ENOMEM; 4646 host_raddr = (void *)-1; 4647 } else 4648 host_raddr = shmat(shmid, g2h_untagged(mmap_start), 4649 shmflg | SHM_REMAP); 4650 } 4651 4652 if (host_raddr == (void *)-1) { 4653 mmap_unlock(); 4654 return get_errno((long)host_raddr); 4655 } 4656 raddr=h2g((unsigned long)host_raddr); 4657 4658 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4659 PAGE_VALID | PAGE_RESET | PAGE_READ | 4660 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); 4661 4662 for (i = 0; i < N_SHM_REGIONS; i++) { 4663 if (!shm_regions[i].in_use) { 4664 shm_regions[i].in_use = true; 4665 shm_regions[i].start = raddr; 4666 shm_regions[i].size = shm_info.shm_segsz; 4667 break; 4668 } 4669 } 4670 4671 mmap_unlock(); 4672 return raddr; 4673 4674 } 4675 4676 static inline abi_long do_shmdt(abi_ulong shmaddr) 4677 { 4678 int i; 4679 abi_long rv; 4680 4681 /* shmdt pointers are always untagged */ 4682 4683 mmap_lock(); 4684 4685 for (i = 0; i < N_SHM_REGIONS; ++i) { 4686 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4687 shm_regions[i].in_use = false; 4688 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4689 break; 4690 } 4691 } 4692 rv = get_errno(shmdt(g2h_untagged(shmaddr))); 4693 4694 mmap_unlock(); 4695 4696 return rv; 4697 } 4698 4699 #ifdef TARGET_NR_ipc 4700 /* ??? This only works with linear mappings. */ 4701 /* do_ipc() must return target values and target errnos. */ 4702 static abi_long do_ipc(CPUArchState *cpu_env, 4703 unsigned int call, abi_long first, 4704 abi_long second, abi_long third, 4705 abi_long ptr, abi_long fifth) 4706 { 4707 int version; 4708 abi_long ret = 0; 4709 4710 version = call >> 16; 4711 call &= 0xffff; 4712 4713 switch (call) { 4714 case IPCOP_semop: 4715 ret = do_semtimedop(first, ptr, second, 0, false); 4716 break; 4717 case IPCOP_semtimedop: 4718 /* 4719 * The s390 sys_ipc variant has only five parameters instead of six 4720 * (as for default variant) and the only difference is the handling of 4721 * SEMTIMEDOP where on s390 the third parameter is used as a pointer 4722 * to a struct timespec where the generic variant uses fifth parameter. 4723 */ 4724 #if defined(TARGET_S390X) 4725 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64); 4726 #else 4727 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64); 4728 #endif 4729 break; 4730 4731 case IPCOP_semget: 4732 ret = get_errno(semget(first, second, third)); 4733 break; 4734 4735 case IPCOP_semctl: { 4736 /* The semun argument to semctl is passed by value, so dereference the 4737 * ptr argument. */ 4738 abi_ulong atptr; 4739 get_user_ual(atptr, ptr); 4740 ret = do_semctl(first, second, third, atptr); 4741 break; 4742 } 4743 4744 case IPCOP_msgget: 4745 ret = get_errno(msgget(first, second)); 4746 break; 4747 4748 case IPCOP_msgsnd: 4749 ret = do_msgsnd(first, ptr, second, third); 4750 break; 4751 4752 case IPCOP_msgctl: 4753 ret = do_msgctl(first, second, ptr); 4754 break; 4755 4756 case IPCOP_msgrcv: 4757 switch (version) { 4758 case 0: 4759 { 4760 struct target_ipc_kludge { 4761 abi_long msgp; 4762 abi_long msgtyp; 4763 } *tmp; 4764 4765 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4766 ret = -TARGET_EFAULT; 4767 break; 4768 } 4769 4770 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4771 4772 unlock_user_struct(tmp, ptr, 0); 4773 break; 4774 } 4775 default: 4776 ret = do_msgrcv(first, ptr, second, fifth, third); 4777 } 4778 break; 4779 4780 case IPCOP_shmat: 4781 switch (version) { 4782 default: 4783 { 4784 abi_ulong raddr; 4785 raddr = do_shmat(cpu_env, first, ptr, second); 4786 if (is_error(raddr)) 4787 return get_errno(raddr); 4788 if (put_user_ual(raddr, third)) 4789 return -TARGET_EFAULT; 4790 break; 4791 } 4792 case 1: 4793 ret = -TARGET_EINVAL; 4794 break; 4795 } 4796 break; 4797 case IPCOP_shmdt: 4798 ret = do_shmdt(ptr); 4799 break; 4800 4801 case IPCOP_shmget: 4802 /* IPC_* flag values are the same on all linux platforms */ 4803 ret = get_errno(shmget(first, second, third)); 4804 break; 4805 4806 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4807 case IPCOP_shmctl: 4808 ret = do_shmctl(first, second, ptr); 4809 break; 4810 default: 4811 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4812 call, version); 4813 ret = -TARGET_ENOSYS; 4814 break; 4815 } 4816 return ret; 4817 } 4818 #endif 4819 4820 /* kernel structure types definitions */ 4821 4822 #define STRUCT(name, ...) STRUCT_ ## name, 4823 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4824 enum { 4825 #include "syscall_types.h" 4826 STRUCT_MAX 4827 }; 4828 #undef STRUCT 4829 #undef STRUCT_SPECIAL 4830 4831 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4832 #define STRUCT_SPECIAL(name) 4833 #include "syscall_types.h" 4834 #undef STRUCT 4835 #undef STRUCT_SPECIAL 4836 4837 #define MAX_STRUCT_SIZE 4096 4838 4839 #ifdef CONFIG_FIEMAP 4840 /* So fiemap access checks don't overflow on 32 bit systems. 4841 * This is very slightly smaller than the limit imposed by 4842 * the underlying kernel. 4843 */ 4844 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4845 / sizeof(struct fiemap_extent)) 4846 4847 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4848 int fd, int cmd, abi_long arg) 4849 { 4850 /* The parameter for this ioctl is a struct fiemap followed 4851 * by an array of struct fiemap_extent whose size is set 4852 * in fiemap->fm_extent_count. The array is filled in by the 4853 * ioctl. 4854 */ 4855 int target_size_in, target_size_out; 4856 struct fiemap *fm; 4857 const argtype *arg_type = ie->arg_type; 4858 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4859 void *argptr, *p; 4860 abi_long ret; 4861 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4862 uint32_t outbufsz; 4863 int free_fm = 0; 4864 4865 assert(arg_type[0] == TYPE_PTR); 4866 assert(ie->access == IOC_RW); 4867 arg_type++; 4868 target_size_in = thunk_type_size(arg_type, 0); 4869 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4870 if (!argptr) { 4871 return -TARGET_EFAULT; 4872 } 4873 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4874 unlock_user(argptr, arg, 0); 4875 fm = (struct fiemap *)buf_temp; 4876 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4877 return -TARGET_EINVAL; 4878 } 4879 4880 outbufsz = sizeof (*fm) + 4881 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4882 4883 if (outbufsz > MAX_STRUCT_SIZE) { 4884 /* We can't fit all the extents into the fixed size buffer. 4885 * Allocate one that is large enough and use it instead. 4886 */ 4887 fm = g_try_malloc(outbufsz); 4888 if (!fm) { 4889 return -TARGET_ENOMEM; 4890 } 4891 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4892 free_fm = 1; 4893 } 4894 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4895 if (!is_error(ret)) { 4896 target_size_out = target_size_in; 4897 /* An extent_count of 0 means we were only counting the extents 4898 * so there are no structs to copy 4899 */ 4900 if (fm->fm_extent_count != 0) { 4901 target_size_out += fm->fm_mapped_extents * extent_size; 4902 } 4903 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4904 if (!argptr) { 4905 ret = -TARGET_EFAULT; 4906 } else { 4907 /* Convert the struct fiemap */ 4908 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4909 if (fm->fm_extent_count != 0) { 4910 p = argptr + target_size_in; 4911 /* ...and then all the struct fiemap_extents */ 4912 for (i = 0; i < fm->fm_mapped_extents; i++) { 4913 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4914 THUNK_TARGET); 4915 p += extent_size; 4916 } 4917 } 4918 unlock_user(argptr, arg, target_size_out); 4919 } 4920 } 4921 if (free_fm) { 4922 g_free(fm); 4923 } 4924 return ret; 4925 } 4926 #endif 4927 4928 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4929 int fd, int cmd, abi_long arg) 4930 { 4931 const argtype *arg_type = ie->arg_type; 4932 int target_size; 4933 void *argptr; 4934 int ret; 4935 struct ifconf *host_ifconf; 4936 uint32_t outbufsz; 4937 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4938 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) }; 4939 int target_ifreq_size; 4940 int nb_ifreq; 4941 int free_buf = 0; 4942 int i; 4943 int target_ifc_len; 4944 abi_long target_ifc_buf; 4945 int host_ifc_len; 4946 char *host_ifc_buf; 4947 4948 assert(arg_type[0] == TYPE_PTR); 4949 assert(ie->access == IOC_RW); 4950 4951 arg_type++; 4952 target_size = thunk_type_size(arg_type, 0); 4953 4954 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4955 if (!argptr) 4956 return -TARGET_EFAULT; 4957 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4958 unlock_user(argptr, arg, 0); 4959 4960 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4961 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4962 target_ifreq_size = thunk_type_size(ifreq_max_type, 0); 4963 4964 if (target_ifc_buf != 0) { 4965 target_ifc_len = host_ifconf->ifc_len; 4966 nb_ifreq = target_ifc_len / target_ifreq_size; 4967 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4968 4969 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4970 if (outbufsz > MAX_STRUCT_SIZE) { 4971 /* 4972 * We can't fit all the extents into the fixed size buffer. 4973 * Allocate one that is large enough and use it instead. 4974 */ 4975 host_ifconf = malloc(outbufsz); 4976 if (!host_ifconf) { 4977 return -TARGET_ENOMEM; 4978 } 4979 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4980 free_buf = 1; 4981 } 4982 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4983 4984 host_ifconf->ifc_len = host_ifc_len; 4985 } else { 4986 host_ifc_buf = NULL; 4987 } 4988 host_ifconf->ifc_buf = host_ifc_buf; 4989 4990 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 4991 if (!is_error(ret)) { 4992 /* convert host ifc_len to target ifc_len */ 4993 4994 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 4995 target_ifc_len = nb_ifreq * target_ifreq_size; 4996 host_ifconf->ifc_len = target_ifc_len; 4997 4998 /* restore target ifc_buf */ 4999 5000 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 5001 5002 /* copy struct ifconf to target user */ 5003 5004 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5005 if (!argptr) 5006 return -TARGET_EFAULT; 5007 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 5008 unlock_user(argptr, arg, target_size); 5009 5010 if (target_ifc_buf != 0) { 5011 /* copy ifreq[] to target user */ 5012 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 5013 for (i = 0; i < nb_ifreq ; i++) { 5014 thunk_convert(argptr + i * target_ifreq_size, 5015 host_ifc_buf + i * sizeof(struct ifreq), 5016 ifreq_arg_type, THUNK_TARGET); 5017 } 5018 unlock_user(argptr, target_ifc_buf, target_ifc_len); 5019 } 5020 } 5021 5022 if (free_buf) { 5023 free(host_ifconf); 5024 } 5025 5026 return ret; 5027 } 5028 5029 #if defined(CONFIG_USBFS) 5030 #if HOST_LONG_BITS > 64 5031 #error USBDEVFS thunks do not support >64 bit hosts yet. 5032 #endif 5033 struct live_urb { 5034 uint64_t target_urb_adr; 5035 uint64_t target_buf_adr; 5036 char *target_buf_ptr; 5037 struct usbdevfs_urb host_urb; 5038 }; 5039 5040 static GHashTable *usbdevfs_urb_hashtable(void) 5041 { 5042 static GHashTable *urb_hashtable; 5043 5044 if (!urb_hashtable) { 5045 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 5046 } 5047 return urb_hashtable; 5048 } 5049 5050 static void urb_hashtable_insert(struct live_urb *urb) 5051 { 5052 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 5053 g_hash_table_insert(urb_hashtable, urb, urb); 5054 } 5055 5056 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 5057 { 5058 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 5059 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 5060 } 5061 5062 static void urb_hashtable_remove(struct live_urb *urb) 5063 { 5064 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 5065 g_hash_table_remove(urb_hashtable, urb); 5066 } 5067 5068 static abi_long 5069 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 5070 int fd, int cmd, abi_long arg) 5071 { 5072 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 5073 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 5074 struct live_urb *lurb; 5075 void *argptr; 5076 uint64_t hurb; 5077 int target_size; 5078 uintptr_t target_urb_adr; 5079 abi_long ret; 5080 5081 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 5082 5083 memset(buf_temp, 0, sizeof(uint64_t)); 5084 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5085 if (is_error(ret)) { 5086 return ret; 5087 } 5088 5089 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 5090 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 5091 if (!lurb->target_urb_adr) { 5092 return -TARGET_EFAULT; 5093 } 5094 urb_hashtable_remove(lurb); 5095 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 5096 lurb->host_urb.buffer_length); 5097 lurb->target_buf_ptr = NULL; 5098 5099 /* restore the guest buffer pointer */ 5100 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 5101 5102 /* update the guest urb struct */ 5103 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 5104 if (!argptr) { 5105 g_free(lurb); 5106 return -TARGET_EFAULT; 5107 } 5108 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 5109 unlock_user(argptr, lurb->target_urb_adr, target_size); 5110 5111 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 5112 /* write back the urb handle */ 5113 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5114 if (!argptr) { 5115 g_free(lurb); 5116 return -TARGET_EFAULT; 5117 } 5118 5119 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 5120 target_urb_adr = lurb->target_urb_adr; 5121 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 5122 unlock_user(argptr, arg, target_size); 5123 5124 g_free(lurb); 5125 return ret; 5126 } 5127 5128 static abi_long 5129 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 5130 uint8_t *buf_temp __attribute__((unused)), 5131 int fd, int cmd, abi_long arg) 5132 { 5133 struct live_urb *lurb; 5134 5135 /* map target address back to host URB with metadata. */ 5136 lurb = urb_hashtable_lookup(arg); 5137 if (!lurb) { 5138 return -TARGET_EFAULT; 5139 } 5140 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5141 } 5142 5143 static abi_long 5144 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 5145 int fd, int cmd, abi_long arg) 5146 { 5147 const argtype *arg_type = ie->arg_type; 5148 int target_size; 5149 abi_long ret; 5150 void *argptr; 5151 int rw_dir; 5152 struct live_urb *lurb; 5153 5154 /* 5155 * each submitted URB needs to map to a unique ID for the 5156 * kernel, and that unique ID needs to be a pointer to 5157 * host memory. hence, we need to malloc for each URB. 5158 * isochronous transfers have a variable length struct. 5159 */ 5160 arg_type++; 5161 target_size = thunk_type_size(arg_type, THUNK_TARGET); 5162 5163 /* construct host copy of urb and metadata */ 5164 lurb = g_try_malloc0(sizeof(struct live_urb)); 5165 if (!lurb) { 5166 return -TARGET_ENOMEM; 5167 } 5168 5169 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5170 if (!argptr) { 5171 g_free(lurb); 5172 return -TARGET_EFAULT; 5173 } 5174 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 5175 unlock_user(argptr, arg, 0); 5176 5177 lurb->target_urb_adr = arg; 5178 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 5179 5180 /* buffer space used depends on endpoint type so lock the entire buffer */ 5181 /* control type urbs should check the buffer contents for true direction */ 5182 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 5183 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 5184 lurb->host_urb.buffer_length, 1); 5185 if (lurb->target_buf_ptr == NULL) { 5186 g_free(lurb); 5187 return -TARGET_EFAULT; 5188 } 5189 5190 /* update buffer pointer in host copy */ 5191 lurb->host_urb.buffer = lurb->target_buf_ptr; 5192 5193 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5194 if (is_error(ret)) { 5195 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 5196 g_free(lurb); 5197 } else { 5198 urb_hashtable_insert(lurb); 5199 } 5200 5201 return ret; 5202 } 5203 #endif /* CONFIG_USBFS */ 5204 5205 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5206 int cmd, abi_long arg) 5207 { 5208 void *argptr; 5209 struct dm_ioctl *host_dm; 5210 abi_long guest_data; 5211 uint32_t guest_data_size; 5212 int target_size; 5213 const argtype *arg_type = ie->arg_type; 5214 abi_long ret; 5215 void *big_buf = NULL; 5216 char *host_data; 5217 5218 arg_type++; 5219 target_size = thunk_type_size(arg_type, 0); 5220 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5221 if (!argptr) { 5222 ret = -TARGET_EFAULT; 5223 goto out; 5224 } 5225 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5226 unlock_user(argptr, arg, 0); 5227 5228 /* buf_temp is too small, so fetch things into a bigger buffer */ 5229 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5230 memcpy(big_buf, buf_temp, target_size); 5231 buf_temp = big_buf; 5232 host_dm = big_buf; 5233 5234 guest_data = arg + host_dm->data_start; 5235 if ((guest_data - arg) < 0) { 5236 ret = -TARGET_EINVAL; 5237 goto out; 5238 } 5239 guest_data_size = host_dm->data_size - host_dm->data_start; 5240 host_data = (char*)host_dm + host_dm->data_start; 5241 5242 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5243 if (!argptr) { 5244 ret = -TARGET_EFAULT; 5245 goto out; 5246 } 5247 5248 switch (ie->host_cmd) { 5249 case DM_REMOVE_ALL: 5250 case DM_LIST_DEVICES: 5251 case DM_DEV_CREATE: 5252 case DM_DEV_REMOVE: 5253 case DM_DEV_SUSPEND: 5254 case DM_DEV_STATUS: 5255 case DM_DEV_WAIT: 5256 case DM_TABLE_STATUS: 5257 case DM_TABLE_CLEAR: 5258 case DM_TABLE_DEPS: 5259 case DM_LIST_VERSIONS: 5260 /* no input data */ 5261 break; 5262 case DM_DEV_RENAME: 5263 case DM_DEV_SET_GEOMETRY: 5264 /* data contains only strings */ 5265 memcpy(host_data, argptr, guest_data_size); 5266 break; 5267 case DM_TARGET_MSG: 5268 memcpy(host_data, argptr, guest_data_size); 5269 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5270 break; 5271 case DM_TABLE_LOAD: 5272 { 5273 void *gspec = argptr; 5274 void *cur_data = host_data; 5275 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5276 int spec_size = thunk_type_size(arg_type, 0); 5277 int i; 5278 5279 for (i = 0; i < host_dm->target_count; i++) { 5280 struct dm_target_spec *spec = cur_data; 5281 uint32_t next; 5282 int slen; 5283 5284 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5285 slen = strlen((char*)gspec + spec_size) + 1; 5286 next = spec->next; 5287 spec->next = sizeof(*spec) + slen; 5288 strcpy((char*)&spec[1], gspec + spec_size); 5289 gspec += next; 5290 cur_data += spec->next; 5291 } 5292 break; 5293 } 5294 default: 5295 ret = -TARGET_EINVAL; 5296 unlock_user(argptr, guest_data, 0); 5297 goto out; 5298 } 5299 unlock_user(argptr, guest_data, 0); 5300 5301 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5302 if (!is_error(ret)) { 5303 guest_data = arg + host_dm->data_start; 5304 guest_data_size = host_dm->data_size - host_dm->data_start; 5305 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5306 switch (ie->host_cmd) { 5307 case DM_REMOVE_ALL: 5308 case DM_DEV_CREATE: 5309 case DM_DEV_REMOVE: 5310 case DM_DEV_RENAME: 5311 case DM_DEV_SUSPEND: 5312 case DM_DEV_STATUS: 5313 case DM_TABLE_LOAD: 5314 case DM_TABLE_CLEAR: 5315 case DM_TARGET_MSG: 5316 case DM_DEV_SET_GEOMETRY: 5317 /* no return data */ 5318 break; 5319 case DM_LIST_DEVICES: 5320 { 5321 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5322 uint32_t remaining_data = guest_data_size; 5323 void *cur_data = argptr; 5324 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5325 int nl_size = 12; /* can't use thunk_size due to alignment */ 5326 5327 while (1) { 5328 uint32_t next = nl->next; 5329 if (next) { 5330 nl->next = nl_size + (strlen(nl->name) + 1); 5331 } 5332 if (remaining_data < nl->next) { 5333 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5334 break; 5335 } 5336 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5337 strcpy(cur_data + nl_size, nl->name); 5338 cur_data += nl->next; 5339 remaining_data -= nl->next; 5340 if (!next) { 5341 break; 5342 } 5343 nl = (void*)nl + next; 5344 } 5345 break; 5346 } 5347 case DM_DEV_WAIT: 5348 case DM_TABLE_STATUS: 5349 { 5350 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5351 void *cur_data = argptr; 5352 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5353 int spec_size = thunk_type_size(arg_type, 0); 5354 int i; 5355 5356 for (i = 0; i < host_dm->target_count; i++) { 5357 uint32_t next = spec->next; 5358 int slen = strlen((char*)&spec[1]) + 1; 5359 spec->next = (cur_data - argptr) + spec_size + slen; 5360 if (guest_data_size < spec->next) { 5361 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5362 break; 5363 } 5364 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5365 strcpy(cur_data + spec_size, (char*)&spec[1]); 5366 cur_data = argptr + spec->next; 5367 spec = (void*)host_dm + host_dm->data_start + next; 5368 } 5369 break; 5370 } 5371 case DM_TABLE_DEPS: 5372 { 5373 void *hdata = (void*)host_dm + host_dm->data_start; 5374 int count = *(uint32_t*)hdata; 5375 uint64_t *hdev = hdata + 8; 5376 uint64_t *gdev = argptr + 8; 5377 int i; 5378 5379 *(uint32_t*)argptr = tswap32(count); 5380 for (i = 0; i < count; i++) { 5381 *gdev = tswap64(*hdev); 5382 gdev++; 5383 hdev++; 5384 } 5385 break; 5386 } 5387 case DM_LIST_VERSIONS: 5388 { 5389 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5390 uint32_t remaining_data = guest_data_size; 5391 void *cur_data = argptr; 5392 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5393 int vers_size = thunk_type_size(arg_type, 0); 5394 5395 while (1) { 5396 uint32_t next = vers->next; 5397 if (next) { 5398 vers->next = vers_size + (strlen(vers->name) + 1); 5399 } 5400 if (remaining_data < vers->next) { 5401 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5402 break; 5403 } 5404 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5405 strcpy(cur_data + vers_size, vers->name); 5406 cur_data += vers->next; 5407 remaining_data -= vers->next; 5408 if (!next) { 5409 break; 5410 } 5411 vers = (void*)vers + next; 5412 } 5413 break; 5414 } 5415 default: 5416 unlock_user(argptr, guest_data, 0); 5417 ret = -TARGET_EINVAL; 5418 goto out; 5419 } 5420 unlock_user(argptr, guest_data, guest_data_size); 5421 5422 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5423 if (!argptr) { 5424 ret = -TARGET_EFAULT; 5425 goto out; 5426 } 5427 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5428 unlock_user(argptr, arg, target_size); 5429 } 5430 out: 5431 g_free(big_buf); 5432 return ret; 5433 } 5434 5435 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5436 int cmd, abi_long arg) 5437 { 5438 void *argptr; 5439 int target_size; 5440 const argtype *arg_type = ie->arg_type; 5441 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5442 abi_long ret; 5443 5444 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5445 struct blkpg_partition host_part; 5446 5447 /* Read and convert blkpg */ 5448 arg_type++; 5449 target_size = thunk_type_size(arg_type, 0); 5450 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5451 if (!argptr) { 5452 ret = -TARGET_EFAULT; 5453 goto out; 5454 } 5455 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5456 unlock_user(argptr, arg, 0); 5457 5458 switch (host_blkpg->op) { 5459 case BLKPG_ADD_PARTITION: 5460 case BLKPG_DEL_PARTITION: 5461 /* payload is struct blkpg_partition */ 5462 break; 5463 default: 5464 /* Unknown opcode */ 5465 ret = -TARGET_EINVAL; 5466 goto out; 5467 } 5468 5469 /* Read and convert blkpg->data */ 5470 arg = (abi_long)(uintptr_t)host_blkpg->data; 5471 target_size = thunk_type_size(part_arg_type, 0); 5472 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5473 if (!argptr) { 5474 ret = -TARGET_EFAULT; 5475 goto out; 5476 } 5477 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5478 unlock_user(argptr, arg, 0); 5479 5480 /* Swizzle the data pointer to our local copy and call! */ 5481 host_blkpg->data = &host_part; 5482 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5483 5484 out: 5485 return ret; 5486 } 5487 5488 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5489 int fd, int cmd, abi_long arg) 5490 { 5491 const argtype *arg_type = ie->arg_type; 5492 const StructEntry *se; 5493 const argtype *field_types; 5494 const int *dst_offsets, *src_offsets; 5495 int target_size; 5496 void *argptr; 5497 abi_ulong *target_rt_dev_ptr = NULL; 5498 unsigned long *host_rt_dev_ptr = NULL; 5499 abi_long ret; 5500 int i; 5501 5502 assert(ie->access == IOC_W); 5503 assert(*arg_type == TYPE_PTR); 5504 arg_type++; 5505 assert(*arg_type == TYPE_STRUCT); 5506 target_size = thunk_type_size(arg_type, 0); 5507 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5508 if (!argptr) { 5509 return -TARGET_EFAULT; 5510 } 5511 arg_type++; 5512 assert(*arg_type == (int)STRUCT_rtentry); 5513 se = struct_entries + *arg_type++; 5514 assert(se->convert[0] == NULL); 5515 /* convert struct here to be able to catch rt_dev string */ 5516 field_types = se->field_types; 5517 dst_offsets = se->field_offsets[THUNK_HOST]; 5518 src_offsets = se->field_offsets[THUNK_TARGET]; 5519 for (i = 0; i < se->nb_fields; i++) { 5520 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5521 assert(*field_types == TYPE_PTRVOID); 5522 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5523 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5524 if (*target_rt_dev_ptr != 0) { 5525 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5526 tswapal(*target_rt_dev_ptr)); 5527 if (!*host_rt_dev_ptr) { 5528 unlock_user(argptr, arg, 0); 5529 return -TARGET_EFAULT; 5530 } 5531 } else { 5532 *host_rt_dev_ptr = 0; 5533 } 5534 field_types++; 5535 continue; 5536 } 5537 field_types = thunk_convert(buf_temp + dst_offsets[i], 5538 argptr + src_offsets[i], 5539 field_types, THUNK_HOST); 5540 } 5541 unlock_user(argptr, arg, 0); 5542 5543 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5544 5545 assert(host_rt_dev_ptr != NULL); 5546 assert(target_rt_dev_ptr != NULL); 5547 if (*host_rt_dev_ptr != 0) { 5548 unlock_user((void *)*host_rt_dev_ptr, 5549 *target_rt_dev_ptr, 0); 5550 } 5551 return ret; 5552 } 5553 5554 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5555 int fd, int cmd, abi_long arg) 5556 { 5557 int sig = target_to_host_signal(arg); 5558 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5559 } 5560 5561 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5562 int fd, int cmd, abi_long arg) 5563 { 5564 struct timeval tv; 5565 abi_long ret; 5566 5567 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5568 if (is_error(ret)) { 5569 return ret; 5570 } 5571 5572 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5573 if (copy_to_user_timeval(arg, &tv)) { 5574 return -TARGET_EFAULT; 5575 } 5576 } else { 5577 if (copy_to_user_timeval64(arg, &tv)) { 5578 return -TARGET_EFAULT; 5579 } 5580 } 5581 5582 return ret; 5583 } 5584 5585 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5586 int fd, int cmd, abi_long arg) 5587 { 5588 struct timespec ts; 5589 abi_long ret; 5590 5591 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5592 if (is_error(ret)) { 5593 return ret; 5594 } 5595 5596 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5597 if (host_to_target_timespec(arg, &ts)) { 5598 return -TARGET_EFAULT; 5599 } 5600 } else{ 5601 if (host_to_target_timespec64(arg, &ts)) { 5602 return -TARGET_EFAULT; 5603 } 5604 } 5605 5606 return ret; 5607 } 5608 5609 #ifdef TIOCGPTPEER 5610 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5611 int fd, int cmd, abi_long arg) 5612 { 5613 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5614 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5615 } 5616 #endif 5617 5618 #ifdef HAVE_DRM_H 5619 5620 static void unlock_drm_version(struct drm_version *host_ver, 5621 struct target_drm_version *target_ver, 5622 bool copy) 5623 { 5624 unlock_user(host_ver->name, target_ver->name, 5625 copy ? host_ver->name_len : 0); 5626 unlock_user(host_ver->date, target_ver->date, 5627 copy ? host_ver->date_len : 0); 5628 unlock_user(host_ver->desc, target_ver->desc, 5629 copy ? host_ver->desc_len : 0); 5630 } 5631 5632 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, 5633 struct target_drm_version *target_ver) 5634 { 5635 memset(host_ver, 0, sizeof(*host_ver)); 5636 5637 __get_user(host_ver->name_len, &target_ver->name_len); 5638 if (host_ver->name_len) { 5639 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name, 5640 target_ver->name_len, 0); 5641 if (!host_ver->name) { 5642 return -EFAULT; 5643 } 5644 } 5645 5646 __get_user(host_ver->date_len, &target_ver->date_len); 5647 if (host_ver->date_len) { 5648 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date, 5649 target_ver->date_len, 0); 5650 if (!host_ver->date) { 5651 goto err; 5652 } 5653 } 5654 5655 __get_user(host_ver->desc_len, &target_ver->desc_len); 5656 if (host_ver->desc_len) { 5657 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc, 5658 target_ver->desc_len, 0); 5659 if (!host_ver->desc) { 5660 goto err; 5661 } 5662 } 5663 5664 return 0; 5665 err: 5666 unlock_drm_version(host_ver, target_ver, false); 5667 return -EFAULT; 5668 } 5669 5670 static inline void host_to_target_drmversion( 5671 struct target_drm_version *target_ver, 5672 struct drm_version *host_ver) 5673 { 5674 __put_user(host_ver->version_major, &target_ver->version_major); 5675 __put_user(host_ver->version_minor, &target_ver->version_minor); 5676 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel); 5677 __put_user(host_ver->name_len, &target_ver->name_len); 5678 __put_user(host_ver->date_len, &target_ver->date_len); 5679 __put_user(host_ver->desc_len, &target_ver->desc_len); 5680 unlock_drm_version(host_ver, target_ver, true); 5681 } 5682 5683 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, 5684 int fd, int cmd, abi_long arg) 5685 { 5686 struct drm_version *ver; 5687 struct target_drm_version *target_ver; 5688 abi_long ret; 5689 5690 switch (ie->host_cmd) { 5691 case DRM_IOCTL_VERSION: 5692 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) { 5693 return -TARGET_EFAULT; 5694 } 5695 ver = (struct drm_version *)buf_temp; 5696 ret = target_to_host_drmversion(ver, target_ver); 5697 if (!is_error(ret)) { 5698 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); 5699 if (is_error(ret)) { 5700 unlock_drm_version(ver, target_ver, false); 5701 } else { 5702 host_to_target_drmversion(target_ver, ver); 5703 } 5704 } 5705 unlock_user_struct(target_ver, arg, 0); 5706 return ret; 5707 } 5708 return -TARGET_ENOSYS; 5709 } 5710 5711 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie, 5712 struct drm_i915_getparam *gparam, 5713 int fd, abi_long arg) 5714 { 5715 abi_long ret; 5716 int value; 5717 struct target_drm_i915_getparam *target_gparam; 5718 5719 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) { 5720 return -TARGET_EFAULT; 5721 } 5722 5723 __get_user(gparam->param, &target_gparam->param); 5724 gparam->value = &value; 5725 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam)); 5726 put_user_s32(value, target_gparam->value); 5727 5728 unlock_user_struct(target_gparam, arg, 0); 5729 return ret; 5730 } 5731 5732 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp, 5733 int fd, int cmd, abi_long arg) 5734 { 5735 switch (ie->host_cmd) { 5736 case DRM_IOCTL_I915_GETPARAM: 5737 return do_ioctl_drm_i915_getparam(ie, 5738 (struct drm_i915_getparam *)buf_temp, 5739 fd, arg); 5740 default: 5741 return -TARGET_ENOSYS; 5742 } 5743 } 5744 5745 #endif 5746 5747 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp, 5748 int fd, int cmd, abi_long arg) 5749 { 5750 struct tun_filter *filter = (struct tun_filter *)buf_temp; 5751 struct tun_filter *target_filter; 5752 char *target_addr; 5753 5754 assert(ie->access == IOC_W); 5755 5756 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1); 5757 if (!target_filter) { 5758 return -TARGET_EFAULT; 5759 } 5760 filter->flags = tswap16(target_filter->flags); 5761 filter->count = tswap16(target_filter->count); 5762 unlock_user(target_filter, arg, 0); 5763 5764 if (filter->count) { 5765 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN > 5766 MAX_STRUCT_SIZE) { 5767 return -TARGET_EFAULT; 5768 } 5769 5770 target_addr = lock_user(VERIFY_READ, 5771 arg + offsetof(struct tun_filter, addr), 5772 filter->count * ETH_ALEN, 1); 5773 if (!target_addr) { 5774 return -TARGET_EFAULT; 5775 } 5776 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN); 5777 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0); 5778 } 5779 5780 return get_errno(safe_ioctl(fd, ie->host_cmd, filter)); 5781 } 5782 5783 IOCTLEntry ioctl_entries[] = { 5784 #define IOCTL(cmd, access, ...) \ 5785 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5786 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5787 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5788 #define IOCTL_IGNORE(cmd) \ 5789 { TARGET_ ## cmd, 0, #cmd }, 5790 #include "ioctls.h" 5791 { 0, 0, }, 5792 }; 5793 5794 /* ??? Implement proper locking for ioctls. */ 5795 /* do_ioctl() Must return target values and target errnos. */ 5796 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5797 { 5798 const IOCTLEntry *ie; 5799 const argtype *arg_type; 5800 abi_long ret; 5801 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5802 int target_size; 5803 void *argptr; 5804 5805 ie = ioctl_entries; 5806 for(;;) { 5807 if (ie->target_cmd == 0) { 5808 qemu_log_mask( 5809 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5810 return -TARGET_ENOSYS; 5811 } 5812 if (ie->target_cmd == cmd) 5813 break; 5814 ie++; 5815 } 5816 arg_type = ie->arg_type; 5817 if (ie->do_ioctl) { 5818 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5819 } else if (!ie->host_cmd) { 5820 /* Some architectures define BSD ioctls in their headers 5821 that are not implemented in Linux. */ 5822 return -TARGET_ENOSYS; 5823 } 5824 5825 switch(arg_type[0]) { 5826 case TYPE_NULL: 5827 /* no argument */ 5828 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5829 break; 5830 case TYPE_PTRVOID: 5831 case TYPE_INT: 5832 case TYPE_LONG: 5833 case TYPE_ULONG: 5834 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5835 break; 5836 case TYPE_PTR: 5837 arg_type++; 5838 target_size = thunk_type_size(arg_type, 0); 5839 switch(ie->access) { 5840 case IOC_R: 5841 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5842 if (!is_error(ret)) { 5843 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5844 if (!argptr) 5845 return -TARGET_EFAULT; 5846 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5847 unlock_user(argptr, arg, target_size); 5848 } 5849 break; 5850 case IOC_W: 5851 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5852 if (!argptr) 5853 return -TARGET_EFAULT; 5854 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5855 unlock_user(argptr, arg, 0); 5856 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5857 break; 5858 default: 5859 case IOC_RW: 5860 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5861 if (!argptr) 5862 return -TARGET_EFAULT; 5863 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5864 unlock_user(argptr, arg, 0); 5865 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5866 if (!is_error(ret)) { 5867 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5868 if (!argptr) 5869 return -TARGET_EFAULT; 5870 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5871 unlock_user(argptr, arg, target_size); 5872 } 5873 break; 5874 } 5875 break; 5876 default: 5877 qemu_log_mask(LOG_UNIMP, 5878 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5879 (long)cmd, arg_type[0]); 5880 ret = -TARGET_ENOSYS; 5881 break; 5882 } 5883 return ret; 5884 } 5885 5886 static const bitmask_transtbl iflag_tbl[] = { 5887 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5888 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5889 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5890 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5891 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5892 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5893 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5894 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5895 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5896 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5897 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5898 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5899 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5900 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5901 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8}, 5902 { 0, 0, 0, 0 } 5903 }; 5904 5905 static const bitmask_transtbl oflag_tbl[] = { 5906 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5907 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5908 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5909 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5910 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5911 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5912 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5913 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5914 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5915 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5916 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5917 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5918 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5919 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5920 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5921 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5922 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5923 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5924 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5925 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5926 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5927 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5928 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5929 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5930 { 0, 0, 0, 0 } 5931 }; 5932 5933 static const bitmask_transtbl cflag_tbl[] = { 5934 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5935 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5936 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5937 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5938 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5939 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5940 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5941 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5942 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5943 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5944 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5945 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5946 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5947 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5948 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5949 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5950 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5951 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5952 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5953 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5954 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5955 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5956 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5957 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5958 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5959 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5960 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5961 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5962 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5963 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5964 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5965 { 0, 0, 0, 0 } 5966 }; 5967 5968 static const bitmask_transtbl lflag_tbl[] = { 5969 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5970 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5971 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5972 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5973 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5974 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5975 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5976 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5977 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5978 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5979 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5980 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5981 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5982 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5983 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5984 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC}, 5985 { 0, 0, 0, 0 } 5986 }; 5987 5988 static void target_to_host_termios (void *dst, const void *src) 5989 { 5990 struct host_termios *host = dst; 5991 const struct target_termios *target = src; 5992 5993 host->c_iflag = 5994 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5995 host->c_oflag = 5996 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5997 host->c_cflag = 5998 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5999 host->c_lflag = 6000 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 6001 host->c_line = target->c_line; 6002 6003 memset(host->c_cc, 0, sizeof(host->c_cc)); 6004 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 6005 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 6006 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 6007 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 6008 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 6009 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 6010 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 6011 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 6012 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 6013 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 6014 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 6015 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 6016 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 6017 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 6018 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 6019 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 6020 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 6021 } 6022 6023 static void host_to_target_termios (void *dst, const void *src) 6024 { 6025 struct target_termios *target = dst; 6026 const struct host_termios *host = src; 6027 6028 target->c_iflag = 6029 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 6030 target->c_oflag = 6031 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 6032 target->c_cflag = 6033 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 6034 target->c_lflag = 6035 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 6036 target->c_line = host->c_line; 6037 6038 memset(target->c_cc, 0, sizeof(target->c_cc)); 6039 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 6040 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 6041 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 6042 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 6043 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 6044 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 6045 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 6046 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 6047 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 6048 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 6049 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 6050 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 6051 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 6052 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 6053 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 6054 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 6055 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 6056 } 6057 6058 static const StructEntry struct_termios_def = { 6059 .convert = { host_to_target_termios, target_to_host_termios }, 6060 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 6061 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 6062 .print = print_termios, 6063 }; 6064 6065 static bitmask_transtbl mmap_flags_tbl[] = { 6066 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 6067 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 6068 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 6069 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 6070 MAP_ANONYMOUS, MAP_ANONYMOUS }, 6071 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 6072 MAP_GROWSDOWN, MAP_GROWSDOWN }, 6073 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 6074 MAP_DENYWRITE, MAP_DENYWRITE }, 6075 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 6076 MAP_EXECUTABLE, MAP_EXECUTABLE }, 6077 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 6078 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 6079 MAP_NORESERVE, MAP_NORESERVE }, 6080 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 6081 /* MAP_STACK had been ignored by the kernel for quite some time. 6082 Recognize it for the target insofar as we do not want to pass 6083 it through to the host. */ 6084 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 6085 { 0, 0, 0, 0 } 6086 }; 6087 6088 /* 6089 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 6090 * TARGET_I386 is defined if TARGET_X86_64 is defined 6091 */ 6092 #if defined(TARGET_I386) 6093 6094 /* NOTE: there is really one LDT for all the threads */ 6095 static uint8_t *ldt_table; 6096 6097 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 6098 { 6099 int size; 6100 void *p; 6101 6102 if (!ldt_table) 6103 return 0; 6104 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 6105 if (size > bytecount) 6106 size = bytecount; 6107 p = lock_user(VERIFY_WRITE, ptr, size, 0); 6108 if (!p) 6109 return -TARGET_EFAULT; 6110 /* ??? Should this by byteswapped? */ 6111 memcpy(p, ldt_table, size); 6112 unlock_user(p, ptr, size); 6113 return size; 6114 } 6115 6116 /* XXX: add locking support */ 6117 static abi_long write_ldt(CPUX86State *env, 6118 abi_ulong ptr, unsigned long bytecount, int oldmode) 6119 { 6120 struct target_modify_ldt_ldt_s ldt_info; 6121 struct target_modify_ldt_ldt_s *target_ldt_info; 6122 int seg_32bit, contents, read_exec_only, limit_in_pages; 6123 int seg_not_present, useable, lm; 6124 uint32_t *lp, entry_1, entry_2; 6125 6126 if (bytecount != sizeof(ldt_info)) 6127 return -TARGET_EINVAL; 6128 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 6129 return -TARGET_EFAULT; 6130 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6131 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6132 ldt_info.limit = tswap32(target_ldt_info->limit); 6133 ldt_info.flags = tswap32(target_ldt_info->flags); 6134 unlock_user_struct(target_ldt_info, ptr, 0); 6135 6136 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 6137 return -TARGET_EINVAL; 6138 seg_32bit = ldt_info.flags & 1; 6139 contents = (ldt_info.flags >> 1) & 3; 6140 read_exec_only = (ldt_info.flags >> 3) & 1; 6141 limit_in_pages = (ldt_info.flags >> 4) & 1; 6142 seg_not_present = (ldt_info.flags >> 5) & 1; 6143 useable = (ldt_info.flags >> 6) & 1; 6144 #ifdef TARGET_ABI32 6145 lm = 0; 6146 #else 6147 lm = (ldt_info.flags >> 7) & 1; 6148 #endif 6149 if (contents == 3) { 6150 if (oldmode) 6151 return -TARGET_EINVAL; 6152 if (seg_not_present == 0) 6153 return -TARGET_EINVAL; 6154 } 6155 /* allocate the LDT */ 6156 if (!ldt_table) { 6157 env->ldt.base = target_mmap(0, 6158 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 6159 PROT_READ|PROT_WRITE, 6160 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 6161 if (env->ldt.base == -1) 6162 return -TARGET_ENOMEM; 6163 memset(g2h_untagged(env->ldt.base), 0, 6164 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 6165 env->ldt.limit = 0xffff; 6166 ldt_table = g2h_untagged(env->ldt.base); 6167 } 6168 6169 /* NOTE: same code as Linux kernel */ 6170 /* Allow LDTs to be cleared by the user. */ 6171 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6172 if (oldmode || 6173 (contents == 0 && 6174 read_exec_only == 1 && 6175 seg_32bit == 0 && 6176 limit_in_pages == 0 && 6177 seg_not_present == 1 && 6178 useable == 0 )) { 6179 entry_1 = 0; 6180 entry_2 = 0; 6181 goto install; 6182 } 6183 } 6184 6185 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6186 (ldt_info.limit & 0x0ffff); 6187 entry_2 = (ldt_info.base_addr & 0xff000000) | 6188 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6189 (ldt_info.limit & 0xf0000) | 6190 ((read_exec_only ^ 1) << 9) | 6191 (contents << 10) | 6192 ((seg_not_present ^ 1) << 15) | 6193 (seg_32bit << 22) | 6194 (limit_in_pages << 23) | 6195 (lm << 21) | 6196 0x7000; 6197 if (!oldmode) 6198 entry_2 |= (useable << 20); 6199 6200 /* Install the new entry ... */ 6201 install: 6202 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 6203 lp[0] = tswap32(entry_1); 6204 lp[1] = tswap32(entry_2); 6205 return 0; 6206 } 6207 6208 /* specific and weird i386 syscalls */ 6209 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6210 unsigned long bytecount) 6211 { 6212 abi_long ret; 6213 6214 switch (func) { 6215 case 0: 6216 ret = read_ldt(ptr, bytecount); 6217 break; 6218 case 1: 6219 ret = write_ldt(env, ptr, bytecount, 1); 6220 break; 6221 case 0x11: 6222 ret = write_ldt(env, ptr, bytecount, 0); 6223 break; 6224 default: 6225 ret = -TARGET_ENOSYS; 6226 break; 6227 } 6228 return ret; 6229 } 6230 6231 #if defined(TARGET_ABI32) 6232 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6233 { 6234 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6235 struct target_modify_ldt_ldt_s ldt_info; 6236 struct target_modify_ldt_ldt_s *target_ldt_info; 6237 int seg_32bit, contents, read_exec_only, limit_in_pages; 6238 int seg_not_present, useable, lm; 6239 uint32_t *lp, entry_1, entry_2; 6240 int i; 6241 6242 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6243 if (!target_ldt_info) 6244 return -TARGET_EFAULT; 6245 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6246 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6247 ldt_info.limit = tswap32(target_ldt_info->limit); 6248 ldt_info.flags = tswap32(target_ldt_info->flags); 6249 if (ldt_info.entry_number == -1) { 6250 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6251 if (gdt_table[i] == 0) { 6252 ldt_info.entry_number = i; 6253 target_ldt_info->entry_number = tswap32(i); 6254 break; 6255 } 6256 } 6257 } 6258 unlock_user_struct(target_ldt_info, ptr, 1); 6259 6260 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6261 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6262 return -TARGET_EINVAL; 6263 seg_32bit = ldt_info.flags & 1; 6264 contents = (ldt_info.flags >> 1) & 3; 6265 read_exec_only = (ldt_info.flags >> 3) & 1; 6266 limit_in_pages = (ldt_info.flags >> 4) & 1; 6267 seg_not_present = (ldt_info.flags >> 5) & 1; 6268 useable = (ldt_info.flags >> 6) & 1; 6269 #ifdef TARGET_ABI32 6270 lm = 0; 6271 #else 6272 lm = (ldt_info.flags >> 7) & 1; 6273 #endif 6274 6275 if (contents == 3) { 6276 if (seg_not_present == 0) 6277 return -TARGET_EINVAL; 6278 } 6279 6280 /* NOTE: same code as Linux kernel */ 6281 /* Allow LDTs to be cleared by the user. */ 6282 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6283 if ((contents == 0 && 6284 read_exec_only == 1 && 6285 seg_32bit == 0 && 6286 limit_in_pages == 0 && 6287 seg_not_present == 1 && 6288 useable == 0 )) { 6289 entry_1 = 0; 6290 entry_2 = 0; 6291 goto install; 6292 } 6293 } 6294 6295 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6296 (ldt_info.limit & 0x0ffff); 6297 entry_2 = (ldt_info.base_addr & 0xff000000) | 6298 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6299 (ldt_info.limit & 0xf0000) | 6300 ((read_exec_only ^ 1) << 9) | 6301 (contents << 10) | 6302 ((seg_not_present ^ 1) << 15) | 6303 (seg_32bit << 22) | 6304 (limit_in_pages << 23) | 6305 (useable << 20) | 6306 (lm << 21) | 6307 0x7000; 6308 6309 /* Install the new entry ... */ 6310 install: 6311 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6312 lp[0] = tswap32(entry_1); 6313 lp[1] = tswap32(entry_2); 6314 return 0; 6315 } 6316 6317 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6318 { 6319 struct target_modify_ldt_ldt_s *target_ldt_info; 6320 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6321 uint32_t base_addr, limit, flags; 6322 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6323 int seg_not_present, useable, lm; 6324 uint32_t *lp, entry_1, entry_2; 6325 6326 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6327 if (!target_ldt_info) 6328 return -TARGET_EFAULT; 6329 idx = tswap32(target_ldt_info->entry_number); 6330 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6331 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6332 unlock_user_struct(target_ldt_info, ptr, 1); 6333 return -TARGET_EINVAL; 6334 } 6335 lp = (uint32_t *)(gdt_table + idx); 6336 entry_1 = tswap32(lp[0]); 6337 entry_2 = tswap32(lp[1]); 6338 6339 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6340 contents = (entry_2 >> 10) & 3; 6341 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6342 seg_32bit = (entry_2 >> 22) & 1; 6343 limit_in_pages = (entry_2 >> 23) & 1; 6344 useable = (entry_2 >> 20) & 1; 6345 #ifdef TARGET_ABI32 6346 lm = 0; 6347 #else 6348 lm = (entry_2 >> 21) & 1; 6349 #endif 6350 flags = (seg_32bit << 0) | (contents << 1) | 6351 (read_exec_only << 3) | (limit_in_pages << 4) | 6352 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6353 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6354 base_addr = (entry_1 >> 16) | 6355 (entry_2 & 0xff000000) | 6356 ((entry_2 & 0xff) << 16); 6357 target_ldt_info->base_addr = tswapal(base_addr); 6358 target_ldt_info->limit = tswap32(limit); 6359 target_ldt_info->flags = tswap32(flags); 6360 unlock_user_struct(target_ldt_info, ptr, 1); 6361 return 0; 6362 } 6363 6364 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6365 { 6366 return -TARGET_ENOSYS; 6367 } 6368 #else 6369 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6370 { 6371 abi_long ret = 0; 6372 abi_ulong val; 6373 int idx; 6374 6375 switch(code) { 6376 case TARGET_ARCH_SET_GS: 6377 case TARGET_ARCH_SET_FS: 6378 if (code == TARGET_ARCH_SET_GS) 6379 idx = R_GS; 6380 else 6381 idx = R_FS; 6382 cpu_x86_load_seg(env, idx, 0); 6383 env->segs[idx].base = addr; 6384 break; 6385 case TARGET_ARCH_GET_GS: 6386 case TARGET_ARCH_GET_FS: 6387 if (code == TARGET_ARCH_GET_GS) 6388 idx = R_GS; 6389 else 6390 idx = R_FS; 6391 val = env->segs[idx].base; 6392 if (put_user(val, addr, abi_ulong)) 6393 ret = -TARGET_EFAULT; 6394 break; 6395 default: 6396 ret = -TARGET_EINVAL; 6397 break; 6398 } 6399 return ret; 6400 } 6401 #endif /* defined(TARGET_ABI32 */ 6402 6403 #endif /* defined(TARGET_I386) */ 6404 6405 #define NEW_STACK_SIZE 0x40000 6406 6407 6408 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6409 typedef struct { 6410 CPUArchState *env; 6411 pthread_mutex_t mutex; 6412 pthread_cond_t cond; 6413 pthread_t thread; 6414 uint32_t tid; 6415 abi_ulong child_tidptr; 6416 abi_ulong parent_tidptr; 6417 sigset_t sigmask; 6418 } new_thread_info; 6419 6420 static void *clone_func(void *arg) 6421 { 6422 new_thread_info *info = arg; 6423 CPUArchState *env; 6424 CPUState *cpu; 6425 TaskState *ts; 6426 6427 rcu_register_thread(); 6428 tcg_register_thread(); 6429 env = info->env; 6430 cpu = env_cpu(env); 6431 thread_cpu = cpu; 6432 ts = (TaskState *)cpu->opaque; 6433 info->tid = sys_gettid(); 6434 task_settid(ts); 6435 if (info->child_tidptr) 6436 put_user_u32(info->tid, info->child_tidptr); 6437 if (info->parent_tidptr) 6438 put_user_u32(info->tid, info->parent_tidptr); 6439 qemu_guest_random_seed_thread_part2(cpu->random_seed); 6440 /* Enable signals. */ 6441 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6442 /* Signal to the parent that we're ready. */ 6443 pthread_mutex_lock(&info->mutex); 6444 pthread_cond_broadcast(&info->cond); 6445 pthread_mutex_unlock(&info->mutex); 6446 /* Wait until the parent has finished initializing the tls state. */ 6447 pthread_mutex_lock(&clone_lock); 6448 pthread_mutex_unlock(&clone_lock); 6449 cpu_loop(env); 6450 /* never exits */ 6451 return NULL; 6452 } 6453 6454 /* do_fork() Must return host values and target errnos (unlike most 6455 do_*() functions). */ 6456 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6457 abi_ulong parent_tidptr, target_ulong newtls, 6458 abi_ulong child_tidptr) 6459 { 6460 CPUState *cpu = env_cpu(env); 6461 int ret; 6462 TaskState *ts; 6463 CPUState *new_cpu; 6464 CPUArchState *new_env; 6465 sigset_t sigmask; 6466 6467 flags &= ~CLONE_IGNORED_FLAGS; 6468 6469 /* Emulate vfork() with fork() */ 6470 if (flags & CLONE_VFORK) 6471 flags &= ~(CLONE_VFORK | CLONE_VM); 6472 6473 if (flags & CLONE_VM) { 6474 TaskState *parent_ts = (TaskState *)cpu->opaque; 6475 new_thread_info info; 6476 pthread_attr_t attr; 6477 6478 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6479 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6480 return -TARGET_EINVAL; 6481 } 6482 6483 ts = g_new0(TaskState, 1); 6484 init_task_state(ts); 6485 6486 /* Grab a mutex so that thread setup appears atomic. */ 6487 pthread_mutex_lock(&clone_lock); 6488 6489 /* 6490 * If this is our first additional thread, we need to ensure we 6491 * generate code for parallel execution and flush old translations. 6492 * Do this now so that the copy gets CF_PARALLEL too. 6493 */ 6494 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 6495 cpu->tcg_cflags |= CF_PARALLEL; 6496 tb_flush(cpu); 6497 } 6498 6499 /* we create a new CPU instance. */ 6500 new_env = cpu_copy(env); 6501 /* Init regs that differ from the parent. */ 6502 cpu_clone_regs_child(new_env, newsp, flags); 6503 cpu_clone_regs_parent(env, flags); 6504 new_cpu = env_cpu(new_env); 6505 new_cpu->opaque = ts; 6506 ts->bprm = parent_ts->bprm; 6507 ts->info = parent_ts->info; 6508 ts->signal_mask = parent_ts->signal_mask; 6509 6510 if (flags & CLONE_CHILD_CLEARTID) { 6511 ts->child_tidptr = child_tidptr; 6512 } 6513 6514 if (flags & CLONE_SETTLS) { 6515 cpu_set_tls (new_env, newtls); 6516 } 6517 6518 memset(&info, 0, sizeof(info)); 6519 pthread_mutex_init(&info.mutex, NULL); 6520 pthread_mutex_lock(&info.mutex); 6521 pthread_cond_init(&info.cond, NULL); 6522 info.env = new_env; 6523 if (flags & CLONE_CHILD_SETTID) { 6524 info.child_tidptr = child_tidptr; 6525 } 6526 if (flags & CLONE_PARENT_SETTID) { 6527 info.parent_tidptr = parent_tidptr; 6528 } 6529 6530 ret = pthread_attr_init(&attr); 6531 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6532 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6533 /* It is not safe to deliver signals until the child has finished 6534 initializing, so temporarily block all signals. */ 6535 sigfillset(&sigmask); 6536 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6537 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6538 6539 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6540 /* TODO: Free new CPU state if thread creation failed. */ 6541 6542 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6543 pthread_attr_destroy(&attr); 6544 if (ret == 0) { 6545 /* Wait for the child to initialize. */ 6546 pthread_cond_wait(&info.cond, &info.mutex); 6547 ret = info.tid; 6548 } else { 6549 ret = -1; 6550 } 6551 pthread_mutex_unlock(&info.mutex); 6552 pthread_cond_destroy(&info.cond); 6553 pthread_mutex_destroy(&info.mutex); 6554 pthread_mutex_unlock(&clone_lock); 6555 } else { 6556 /* if no CLONE_VM, we consider it is a fork */ 6557 if (flags & CLONE_INVALID_FORK_FLAGS) { 6558 return -TARGET_EINVAL; 6559 } 6560 6561 /* We can't support custom termination signals */ 6562 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6563 return -TARGET_EINVAL; 6564 } 6565 6566 if (block_signals()) { 6567 return -TARGET_ERESTARTSYS; 6568 } 6569 6570 fork_start(); 6571 ret = fork(); 6572 if (ret == 0) { 6573 /* Child Process. */ 6574 cpu_clone_regs_child(env, newsp, flags); 6575 fork_end(1); 6576 /* There is a race condition here. The parent process could 6577 theoretically read the TID in the child process before the child 6578 tid is set. This would require using either ptrace 6579 (not implemented) or having *_tidptr to point at a shared memory 6580 mapping. We can't repeat the spinlock hack used above because 6581 the child process gets its own copy of the lock. */ 6582 if (flags & CLONE_CHILD_SETTID) 6583 put_user_u32(sys_gettid(), child_tidptr); 6584 if (flags & CLONE_PARENT_SETTID) 6585 put_user_u32(sys_gettid(), parent_tidptr); 6586 ts = (TaskState *)cpu->opaque; 6587 if (flags & CLONE_SETTLS) 6588 cpu_set_tls (env, newtls); 6589 if (flags & CLONE_CHILD_CLEARTID) 6590 ts->child_tidptr = child_tidptr; 6591 } else { 6592 cpu_clone_regs_parent(env, flags); 6593 fork_end(0); 6594 } 6595 } 6596 return ret; 6597 } 6598 6599 /* warning : doesn't handle linux specific flags... */ 6600 static int target_to_host_fcntl_cmd(int cmd) 6601 { 6602 int ret; 6603 6604 switch(cmd) { 6605 case TARGET_F_DUPFD: 6606 case TARGET_F_GETFD: 6607 case TARGET_F_SETFD: 6608 case TARGET_F_GETFL: 6609 case TARGET_F_SETFL: 6610 case TARGET_F_OFD_GETLK: 6611 case TARGET_F_OFD_SETLK: 6612 case TARGET_F_OFD_SETLKW: 6613 ret = cmd; 6614 break; 6615 case TARGET_F_GETLK: 6616 ret = F_GETLK64; 6617 break; 6618 case TARGET_F_SETLK: 6619 ret = F_SETLK64; 6620 break; 6621 case TARGET_F_SETLKW: 6622 ret = F_SETLKW64; 6623 break; 6624 case TARGET_F_GETOWN: 6625 ret = F_GETOWN; 6626 break; 6627 case TARGET_F_SETOWN: 6628 ret = F_SETOWN; 6629 break; 6630 case TARGET_F_GETSIG: 6631 ret = F_GETSIG; 6632 break; 6633 case TARGET_F_SETSIG: 6634 ret = F_SETSIG; 6635 break; 6636 #if TARGET_ABI_BITS == 32 6637 case TARGET_F_GETLK64: 6638 ret = F_GETLK64; 6639 break; 6640 case TARGET_F_SETLK64: 6641 ret = F_SETLK64; 6642 break; 6643 case TARGET_F_SETLKW64: 6644 ret = F_SETLKW64; 6645 break; 6646 #endif 6647 case TARGET_F_SETLEASE: 6648 ret = F_SETLEASE; 6649 break; 6650 case TARGET_F_GETLEASE: 6651 ret = F_GETLEASE; 6652 break; 6653 #ifdef F_DUPFD_CLOEXEC 6654 case TARGET_F_DUPFD_CLOEXEC: 6655 ret = F_DUPFD_CLOEXEC; 6656 break; 6657 #endif 6658 case TARGET_F_NOTIFY: 6659 ret = F_NOTIFY; 6660 break; 6661 #ifdef F_GETOWN_EX 6662 case TARGET_F_GETOWN_EX: 6663 ret = F_GETOWN_EX; 6664 break; 6665 #endif 6666 #ifdef F_SETOWN_EX 6667 case TARGET_F_SETOWN_EX: 6668 ret = F_SETOWN_EX; 6669 break; 6670 #endif 6671 #ifdef F_SETPIPE_SZ 6672 case TARGET_F_SETPIPE_SZ: 6673 ret = F_SETPIPE_SZ; 6674 break; 6675 case TARGET_F_GETPIPE_SZ: 6676 ret = F_GETPIPE_SZ; 6677 break; 6678 #endif 6679 #ifdef F_ADD_SEALS 6680 case TARGET_F_ADD_SEALS: 6681 ret = F_ADD_SEALS; 6682 break; 6683 case TARGET_F_GET_SEALS: 6684 ret = F_GET_SEALS; 6685 break; 6686 #endif 6687 default: 6688 ret = -TARGET_EINVAL; 6689 break; 6690 } 6691 6692 #if defined(__powerpc64__) 6693 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6694 * is not supported by kernel. The glibc fcntl call actually adjusts 6695 * them to 5, 6 and 7 before making the syscall(). Since we make the 6696 * syscall directly, adjust to what is supported by the kernel. 6697 */ 6698 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6699 ret -= F_GETLK64 - 5; 6700 } 6701 #endif 6702 6703 return ret; 6704 } 6705 6706 #define FLOCK_TRANSTBL \ 6707 switch (type) { \ 6708 TRANSTBL_CONVERT(F_RDLCK); \ 6709 TRANSTBL_CONVERT(F_WRLCK); \ 6710 TRANSTBL_CONVERT(F_UNLCK); \ 6711 } 6712 6713 static int target_to_host_flock(int type) 6714 { 6715 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6716 FLOCK_TRANSTBL 6717 #undef TRANSTBL_CONVERT 6718 return -TARGET_EINVAL; 6719 } 6720 6721 static int host_to_target_flock(int type) 6722 { 6723 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6724 FLOCK_TRANSTBL 6725 #undef TRANSTBL_CONVERT 6726 /* if we don't know how to convert the value coming 6727 * from the host we copy to the target field as-is 6728 */ 6729 return type; 6730 } 6731 6732 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6733 abi_ulong target_flock_addr) 6734 { 6735 struct target_flock *target_fl; 6736 int l_type; 6737 6738 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6739 return -TARGET_EFAULT; 6740 } 6741 6742 __get_user(l_type, &target_fl->l_type); 6743 l_type = target_to_host_flock(l_type); 6744 if (l_type < 0) { 6745 return l_type; 6746 } 6747 fl->l_type = l_type; 6748 __get_user(fl->l_whence, &target_fl->l_whence); 6749 __get_user(fl->l_start, &target_fl->l_start); 6750 __get_user(fl->l_len, &target_fl->l_len); 6751 __get_user(fl->l_pid, &target_fl->l_pid); 6752 unlock_user_struct(target_fl, target_flock_addr, 0); 6753 return 0; 6754 } 6755 6756 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6757 const struct flock64 *fl) 6758 { 6759 struct target_flock *target_fl; 6760 short l_type; 6761 6762 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6763 return -TARGET_EFAULT; 6764 } 6765 6766 l_type = host_to_target_flock(fl->l_type); 6767 __put_user(l_type, &target_fl->l_type); 6768 __put_user(fl->l_whence, &target_fl->l_whence); 6769 __put_user(fl->l_start, &target_fl->l_start); 6770 __put_user(fl->l_len, &target_fl->l_len); 6771 __put_user(fl->l_pid, &target_fl->l_pid); 6772 unlock_user_struct(target_fl, target_flock_addr, 1); 6773 return 0; 6774 } 6775 6776 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6777 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6778 6779 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6780 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 6781 abi_ulong target_flock_addr) 6782 { 6783 struct target_oabi_flock64 *target_fl; 6784 int l_type; 6785 6786 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6787 return -TARGET_EFAULT; 6788 } 6789 6790 __get_user(l_type, &target_fl->l_type); 6791 l_type = target_to_host_flock(l_type); 6792 if (l_type < 0) { 6793 return l_type; 6794 } 6795 fl->l_type = l_type; 6796 __get_user(fl->l_whence, &target_fl->l_whence); 6797 __get_user(fl->l_start, &target_fl->l_start); 6798 __get_user(fl->l_len, &target_fl->l_len); 6799 __get_user(fl->l_pid, &target_fl->l_pid); 6800 unlock_user_struct(target_fl, target_flock_addr, 0); 6801 return 0; 6802 } 6803 6804 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 6805 const struct flock64 *fl) 6806 { 6807 struct target_oabi_flock64 *target_fl; 6808 short l_type; 6809 6810 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6811 return -TARGET_EFAULT; 6812 } 6813 6814 l_type = host_to_target_flock(fl->l_type); 6815 __put_user(l_type, &target_fl->l_type); 6816 __put_user(fl->l_whence, &target_fl->l_whence); 6817 __put_user(fl->l_start, &target_fl->l_start); 6818 __put_user(fl->l_len, &target_fl->l_len); 6819 __put_user(fl->l_pid, &target_fl->l_pid); 6820 unlock_user_struct(target_fl, target_flock_addr, 1); 6821 return 0; 6822 } 6823 #endif 6824 6825 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6826 abi_ulong target_flock_addr) 6827 { 6828 struct target_flock64 *target_fl; 6829 int l_type; 6830 6831 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6832 return -TARGET_EFAULT; 6833 } 6834 6835 __get_user(l_type, &target_fl->l_type); 6836 l_type = target_to_host_flock(l_type); 6837 if (l_type < 0) { 6838 return l_type; 6839 } 6840 fl->l_type = l_type; 6841 __get_user(fl->l_whence, &target_fl->l_whence); 6842 __get_user(fl->l_start, &target_fl->l_start); 6843 __get_user(fl->l_len, &target_fl->l_len); 6844 __get_user(fl->l_pid, &target_fl->l_pid); 6845 unlock_user_struct(target_fl, target_flock_addr, 0); 6846 return 0; 6847 } 6848 6849 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 6850 const struct flock64 *fl) 6851 { 6852 struct target_flock64 *target_fl; 6853 short l_type; 6854 6855 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6856 return -TARGET_EFAULT; 6857 } 6858 6859 l_type = host_to_target_flock(fl->l_type); 6860 __put_user(l_type, &target_fl->l_type); 6861 __put_user(fl->l_whence, &target_fl->l_whence); 6862 __put_user(fl->l_start, &target_fl->l_start); 6863 __put_user(fl->l_len, &target_fl->l_len); 6864 __put_user(fl->l_pid, &target_fl->l_pid); 6865 unlock_user_struct(target_fl, target_flock_addr, 1); 6866 return 0; 6867 } 6868 6869 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 6870 { 6871 struct flock64 fl64; 6872 #ifdef F_GETOWN_EX 6873 struct f_owner_ex fox; 6874 struct target_f_owner_ex *target_fox; 6875 #endif 6876 abi_long ret; 6877 int host_cmd = target_to_host_fcntl_cmd(cmd); 6878 6879 if (host_cmd == -TARGET_EINVAL) 6880 return host_cmd; 6881 6882 switch(cmd) { 6883 case TARGET_F_GETLK: 6884 ret = copy_from_user_flock(&fl64, arg); 6885 if (ret) { 6886 return ret; 6887 } 6888 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6889 if (ret == 0) { 6890 ret = copy_to_user_flock(arg, &fl64); 6891 } 6892 break; 6893 6894 case TARGET_F_SETLK: 6895 case TARGET_F_SETLKW: 6896 ret = copy_from_user_flock(&fl64, arg); 6897 if (ret) { 6898 return ret; 6899 } 6900 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6901 break; 6902 6903 case TARGET_F_GETLK64: 6904 case TARGET_F_OFD_GETLK: 6905 ret = copy_from_user_flock64(&fl64, arg); 6906 if (ret) { 6907 return ret; 6908 } 6909 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6910 if (ret == 0) { 6911 ret = copy_to_user_flock64(arg, &fl64); 6912 } 6913 break; 6914 case TARGET_F_SETLK64: 6915 case TARGET_F_SETLKW64: 6916 case TARGET_F_OFD_SETLK: 6917 case TARGET_F_OFD_SETLKW: 6918 ret = copy_from_user_flock64(&fl64, arg); 6919 if (ret) { 6920 return ret; 6921 } 6922 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6923 break; 6924 6925 case TARGET_F_GETFL: 6926 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6927 if (ret >= 0) { 6928 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 6929 } 6930 break; 6931 6932 case TARGET_F_SETFL: 6933 ret = get_errno(safe_fcntl(fd, host_cmd, 6934 target_to_host_bitmask(arg, 6935 fcntl_flags_tbl))); 6936 break; 6937 6938 #ifdef F_GETOWN_EX 6939 case TARGET_F_GETOWN_EX: 6940 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6941 if (ret >= 0) { 6942 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 6943 return -TARGET_EFAULT; 6944 target_fox->type = tswap32(fox.type); 6945 target_fox->pid = tswap32(fox.pid); 6946 unlock_user_struct(target_fox, arg, 1); 6947 } 6948 break; 6949 #endif 6950 6951 #ifdef F_SETOWN_EX 6952 case TARGET_F_SETOWN_EX: 6953 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 6954 return -TARGET_EFAULT; 6955 fox.type = tswap32(target_fox->type); 6956 fox.pid = tswap32(target_fox->pid); 6957 unlock_user_struct(target_fox, arg, 0); 6958 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6959 break; 6960 #endif 6961 6962 case TARGET_F_SETSIG: 6963 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg))); 6964 break; 6965 6966 case TARGET_F_GETSIG: 6967 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg))); 6968 break; 6969 6970 case TARGET_F_SETOWN: 6971 case TARGET_F_GETOWN: 6972 case TARGET_F_SETLEASE: 6973 case TARGET_F_GETLEASE: 6974 case TARGET_F_SETPIPE_SZ: 6975 case TARGET_F_GETPIPE_SZ: 6976 case TARGET_F_ADD_SEALS: 6977 case TARGET_F_GET_SEALS: 6978 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6979 break; 6980 6981 default: 6982 ret = get_errno(safe_fcntl(fd, cmd, arg)); 6983 break; 6984 } 6985 return ret; 6986 } 6987 6988 #ifdef USE_UID16 6989 6990 static inline int high2lowuid(int uid) 6991 { 6992 if (uid > 65535) 6993 return 65534; 6994 else 6995 return uid; 6996 } 6997 6998 static inline int high2lowgid(int gid) 6999 { 7000 if (gid > 65535) 7001 return 65534; 7002 else 7003 return gid; 7004 } 7005 7006 static inline int low2highuid(int uid) 7007 { 7008 if ((int16_t)uid == -1) 7009 return -1; 7010 else 7011 return uid; 7012 } 7013 7014 static inline int low2highgid(int gid) 7015 { 7016 if ((int16_t)gid == -1) 7017 return -1; 7018 else 7019 return gid; 7020 } 7021 static inline int tswapid(int id) 7022 { 7023 return tswap16(id); 7024 } 7025 7026 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 7027 7028 #else /* !USE_UID16 */ 7029 static inline int high2lowuid(int uid) 7030 { 7031 return uid; 7032 } 7033 static inline int high2lowgid(int gid) 7034 { 7035 return gid; 7036 } 7037 static inline int low2highuid(int uid) 7038 { 7039 return uid; 7040 } 7041 static inline int low2highgid(int gid) 7042 { 7043 return gid; 7044 } 7045 static inline int tswapid(int id) 7046 { 7047 return tswap32(id); 7048 } 7049 7050 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 7051 7052 #endif /* USE_UID16 */ 7053 7054 /* We must do direct syscalls for setting UID/GID, because we want to 7055 * implement the Linux system call semantics of "change only for this thread", 7056 * not the libc/POSIX semantics of "change for all threads in process". 7057 * (See http://ewontfix.com/17/ for more details.) 7058 * We use the 32-bit version of the syscalls if present; if it is not 7059 * then either the host architecture supports 32-bit UIDs natively with 7060 * the standard syscall, or the 16-bit UID is the best we can do. 7061 */ 7062 #ifdef __NR_setuid32 7063 #define __NR_sys_setuid __NR_setuid32 7064 #else 7065 #define __NR_sys_setuid __NR_setuid 7066 #endif 7067 #ifdef __NR_setgid32 7068 #define __NR_sys_setgid __NR_setgid32 7069 #else 7070 #define __NR_sys_setgid __NR_setgid 7071 #endif 7072 #ifdef __NR_setresuid32 7073 #define __NR_sys_setresuid __NR_setresuid32 7074 #else 7075 #define __NR_sys_setresuid __NR_setresuid 7076 #endif 7077 #ifdef __NR_setresgid32 7078 #define __NR_sys_setresgid __NR_setresgid32 7079 #else 7080 #define __NR_sys_setresgid __NR_setresgid 7081 #endif 7082 7083 _syscall1(int, sys_setuid, uid_t, uid) 7084 _syscall1(int, sys_setgid, gid_t, gid) 7085 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 7086 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 7087 7088 void syscall_init(void) 7089 { 7090 IOCTLEntry *ie; 7091 const argtype *arg_type; 7092 int size; 7093 int i; 7094 7095 thunk_init(STRUCT_MAX); 7096 7097 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 7098 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 7099 #include "syscall_types.h" 7100 #undef STRUCT 7101 #undef STRUCT_SPECIAL 7102 7103 /* Build target_to_host_errno_table[] table from 7104 * host_to_target_errno_table[]. */ 7105 for (i = 0; i < ERRNO_TABLE_SIZE; i++) { 7106 target_to_host_errno_table[host_to_target_errno_table[i]] = i; 7107 } 7108 7109 /* we patch the ioctl size if necessary. We rely on the fact that 7110 no ioctl has all the bits at '1' in the size field */ 7111 ie = ioctl_entries; 7112 while (ie->target_cmd != 0) { 7113 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 7114 TARGET_IOC_SIZEMASK) { 7115 arg_type = ie->arg_type; 7116 if (arg_type[0] != TYPE_PTR) { 7117 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 7118 ie->target_cmd); 7119 exit(1); 7120 } 7121 arg_type++; 7122 size = thunk_type_size(arg_type, 0); 7123 ie->target_cmd = (ie->target_cmd & 7124 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 7125 (size << TARGET_IOC_SIZESHIFT); 7126 } 7127 7128 /* automatic consistency check if same arch */ 7129 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 7130 (defined(__x86_64__) && defined(TARGET_X86_64)) 7131 if (unlikely(ie->target_cmd != ie->host_cmd)) { 7132 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 7133 ie->name, ie->target_cmd, ie->host_cmd); 7134 } 7135 #endif 7136 ie++; 7137 } 7138 } 7139 7140 #ifdef TARGET_NR_truncate64 7141 static inline abi_long target_truncate64(void *cpu_env, const char *arg1, 7142 abi_long arg2, 7143 abi_long arg3, 7144 abi_long arg4) 7145 { 7146 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 7147 arg2 = arg3; 7148 arg3 = arg4; 7149 } 7150 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 7151 } 7152 #endif 7153 7154 #ifdef TARGET_NR_ftruncate64 7155 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, 7156 abi_long arg2, 7157 abi_long arg3, 7158 abi_long arg4) 7159 { 7160 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 7161 arg2 = arg3; 7162 arg3 = arg4; 7163 } 7164 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 7165 } 7166 #endif 7167 7168 #if defined(TARGET_NR_timer_settime) || \ 7169 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 7170 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its, 7171 abi_ulong target_addr) 7172 { 7173 if (target_to_host_timespec(&host_its->it_interval, target_addr + 7174 offsetof(struct target_itimerspec, 7175 it_interval)) || 7176 target_to_host_timespec(&host_its->it_value, target_addr + 7177 offsetof(struct target_itimerspec, 7178 it_value))) { 7179 return -TARGET_EFAULT; 7180 } 7181 7182 return 0; 7183 } 7184 #endif 7185 7186 #if defined(TARGET_NR_timer_settime64) || \ 7187 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) 7188 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its, 7189 abi_ulong target_addr) 7190 { 7191 if (target_to_host_timespec64(&host_its->it_interval, target_addr + 7192 offsetof(struct target__kernel_itimerspec, 7193 it_interval)) || 7194 target_to_host_timespec64(&host_its->it_value, target_addr + 7195 offsetof(struct target__kernel_itimerspec, 7196 it_value))) { 7197 return -TARGET_EFAULT; 7198 } 7199 7200 return 0; 7201 } 7202 #endif 7203 7204 #if ((defined(TARGET_NR_timerfd_gettime) || \ 7205 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 7206 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 7207 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 7208 struct itimerspec *host_its) 7209 { 7210 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7211 it_interval), 7212 &host_its->it_interval) || 7213 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7214 it_value), 7215 &host_its->it_value)) { 7216 return -TARGET_EFAULT; 7217 } 7218 return 0; 7219 } 7220 #endif 7221 7222 #if ((defined(TARGET_NR_timerfd_gettime64) || \ 7223 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \ 7224 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64) 7225 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr, 7226 struct itimerspec *host_its) 7227 { 7228 if (host_to_target_timespec64(target_addr + 7229 offsetof(struct target__kernel_itimerspec, 7230 it_interval), 7231 &host_its->it_interval) || 7232 host_to_target_timespec64(target_addr + 7233 offsetof(struct target__kernel_itimerspec, 7234 it_value), 7235 &host_its->it_value)) { 7236 return -TARGET_EFAULT; 7237 } 7238 return 0; 7239 } 7240 #endif 7241 7242 #if defined(TARGET_NR_adjtimex) || \ 7243 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 7244 static inline abi_long target_to_host_timex(struct timex *host_tx, 7245 abi_long target_addr) 7246 { 7247 struct target_timex *target_tx; 7248 7249 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7250 return -TARGET_EFAULT; 7251 } 7252 7253 __get_user(host_tx->modes, &target_tx->modes); 7254 __get_user(host_tx->offset, &target_tx->offset); 7255 __get_user(host_tx->freq, &target_tx->freq); 7256 __get_user(host_tx->maxerror, &target_tx->maxerror); 7257 __get_user(host_tx->esterror, &target_tx->esterror); 7258 __get_user(host_tx->status, &target_tx->status); 7259 __get_user(host_tx->constant, &target_tx->constant); 7260 __get_user(host_tx->precision, &target_tx->precision); 7261 __get_user(host_tx->tolerance, &target_tx->tolerance); 7262 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7263 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7264 __get_user(host_tx->tick, &target_tx->tick); 7265 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7266 __get_user(host_tx->jitter, &target_tx->jitter); 7267 __get_user(host_tx->shift, &target_tx->shift); 7268 __get_user(host_tx->stabil, &target_tx->stabil); 7269 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7270 __get_user(host_tx->calcnt, &target_tx->calcnt); 7271 __get_user(host_tx->errcnt, &target_tx->errcnt); 7272 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7273 __get_user(host_tx->tai, &target_tx->tai); 7274 7275 unlock_user_struct(target_tx, target_addr, 0); 7276 return 0; 7277 } 7278 7279 static inline abi_long host_to_target_timex(abi_long target_addr, 7280 struct timex *host_tx) 7281 { 7282 struct target_timex *target_tx; 7283 7284 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7285 return -TARGET_EFAULT; 7286 } 7287 7288 __put_user(host_tx->modes, &target_tx->modes); 7289 __put_user(host_tx->offset, &target_tx->offset); 7290 __put_user(host_tx->freq, &target_tx->freq); 7291 __put_user(host_tx->maxerror, &target_tx->maxerror); 7292 __put_user(host_tx->esterror, &target_tx->esterror); 7293 __put_user(host_tx->status, &target_tx->status); 7294 __put_user(host_tx->constant, &target_tx->constant); 7295 __put_user(host_tx->precision, &target_tx->precision); 7296 __put_user(host_tx->tolerance, &target_tx->tolerance); 7297 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7298 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7299 __put_user(host_tx->tick, &target_tx->tick); 7300 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7301 __put_user(host_tx->jitter, &target_tx->jitter); 7302 __put_user(host_tx->shift, &target_tx->shift); 7303 __put_user(host_tx->stabil, &target_tx->stabil); 7304 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7305 __put_user(host_tx->calcnt, &target_tx->calcnt); 7306 __put_user(host_tx->errcnt, &target_tx->errcnt); 7307 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7308 __put_user(host_tx->tai, &target_tx->tai); 7309 7310 unlock_user_struct(target_tx, target_addr, 1); 7311 return 0; 7312 } 7313 #endif 7314 7315 7316 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 7317 static inline abi_long target_to_host_timex64(struct timex *host_tx, 7318 abi_long target_addr) 7319 { 7320 struct target__kernel_timex *target_tx; 7321 7322 if (copy_from_user_timeval64(&host_tx->time, target_addr + 7323 offsetof(struct target__kernel_timex, 7324 time))) { 7325 return -TARGET_EFAULT; 7326 } 7327 7328 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7329 return -TARGET_EFAULT; 7330 } 7331 7332 __get_user(host_tx->modes, &target_tx->modes); 7333 __get_user(host_tx->offset, &target_tx->offset); 7334 __get_user(host_tx->freq, &target_tx->freq); 7335 __get_user(host_tx->maxerror, &target_tx->maxerror); 7336 __get_user(host_tx->esterror, &target_tx->esterror); 7337 __get_user(host_tx->status, &target_tx->status); 7338 __get_user(host_tx->constant, &target_tx->constant); 7339 __get_user(host_tx->precision, &target_tx->precision); 7340 __get_user(host_tx->tolerance, &target_tx->tolerance); 7341 __get_user(host_tx->tick, &target_tx->tick); 7342 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7343 __get_user(host_tx->jitter, &target_tx->jitter); 7344 __get_user(host_tx->shift, &target_tx->shift); 7345 __get_user(host_tx->stabil, &target_tx->stabil); 7346 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7347 __get_user(host_tx->calcnt, &target_tx->calcnt); 7348 __get_user(host_tx->errcnt, &target_tx->errcnt); 7349 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7350 __get_user(host_tx->tai, &target_tx->tai); 7351 7352 unlock_user_struct(target_tx, target_addr, 0); 7353 return 0; 7354 } 7355 7356 static inline abi_long host_to_target_timex64(abi_long target_addr, 7357 struct timex *host_tx) 7358 { 7359 struct target__kernel_timex *target_tx; 7360 7361 if (copy_to_user_timeval64(target_addr + 7362 offsetof(struct target__kernel_timex, time), 7363 &host_tx->time)) { 7364 return -TARGET_EFAULT; 7365 } 7366 7367 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7368 return -TARGET_EFAULT; 7369 } 7370 7371 __put_user(host_tx->modes, &target_tx->modes); 7372 __put_user(host_tx->offset, &target_tx->offset); 7373 __put_user(host_tx->freq, &target_tx->freq); 7374 __put_user(host_tx->maxerror, &target_tx->maxerror); 7375 __put_user(host_tx->esterror, &target_tx->esterror); 7376 __put_user(host_tx->status, &target_tx->status); 7377 __put_user(host_tx->constant, &target_tx->constant); 7378 __put_user(host_tx->precision, &target_tx->precision); 7379 __put_user(host_tx->tolerance, &target_tx->tolerance); 7380 __put_user(host_tx->tick, &target_tx->tick); 7381 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7382 __put_user(host_tx->jitter, &target_tx->jitter); 7383 __put_user(host_tx->shift, &target_tx->shift); 7384 __put_user(host_tx->stabil, &target_tx->stabil); 7385 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7386 __put_user(host_tx->calcnt, &target_tx->calcnt); 7387 __put_user(host_tx->errcnt, &target_tx->errcnt); 7388 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7389 __put_user(host_tx->tai, &target_tx->tai); 7390 7391 unlock_user_struct(target_tx, target_addr, 1); 7392 return 0; 7393 } 7394 #endif 7395 7396 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7397 abi_ulong target_addr) 7398 { 7399 struct target_sigevent *target_sevp; 7400 7401 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7402 return -TARGET_EFAULT; 7403 } 7404 7405 /* This union is awkward on 64 bit systems because it has a 32 bit 7406 * integer and a pointer in it; we follow the conversion approach 7407 * used for handling sigval types in signal.c so the guest should get 7408 * the correct value back even if we did a 64 bit byteswap and it's 7409 * using the 32 bit integer. 7410 */ 7411 host_sevp->sigev_value.sival_ptr = 7412 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7413 host_sevp->sigev_signo = 7414 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7415 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7416 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid); 7417 7418 unlock_user_struct(target_sevp, target_addr, 1); 7419 return 0; 7420 } 7421 7422 #if defined(TARGET_NR_mlockall) 7423 static inline int target_to_host_mlockall_arg(int arg) 7424 { 7425 int result = 0; 7426 7427 if (arg & TARGET_MCL_CURRENT) { 7428 result |= MCL_CURRENT; 7429 } 7430 if (arg & TARGET_MCL_FUTURE) { 7431 result |= MCL_FUTURE; 7432 } 7433 #ifdef MCL_ONFAULT 7434 if (arg & TARGET_MCL_ONFAULT) { 7435 result |= MCL_ONFAULT; 7436 } 7437 #endif 7438 7439 return result; 7440 } 7441 #endif 7442 7443 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 7444 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 7445 defined(TARGET_NR_newfstatat)) 7446 static inline abi_long host_to_target_stat64(void *cpu_env, 7447 abi_ulong target_addr, 7448 struct stat *host_st) 7449 { 7450 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7451 if (((CPUARMState *)cpu_env)->eabi) { 7452 struct target_eabi_stat64 *target_st; 7453 7454 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7455 return -TARGET_EFAULT; 7456 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7457 __put_user(host_st->st_dev, &target_st->st_dev); 7458 __put_user(host_st->st_ino, &target_st->st_ino); 7459 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7460 __put_user(host_st->st_ino, &target_st->__st_ino); 7461 #endif 7462 __put_user(host_st->st_mode, &target_st->st_mode); 7463 __put_user(host_st->st_nlink, &target_st->st_nlink); 7464 __put_user(host_st->st_uid, &target_st->st_uid); 7465 __put_user(host_st->st_gid, &target_st->st_gid); 7466 __put_user(host_st->st_rdev, &target_st->st_rdev); 7467 __put_user(host_st->st_size, &target_st->st_size); 7468 __put_user(host_st->st_blksize, &target_st->st_blksize); 7469 __put_user(host_st->st_blocks, &target_st->st_blocks); 7470 __put_user(host_st->st_atime, &target_st->target_st_atime); 7471 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7472 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7473 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700 7474 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7475 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7476 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7477 #endif 7478 unlock_user_struct(target_st, target_addr, 1); 7479 } else 7480 #endif 7481 { 7482 #if defined(TARGET_HAS_STRUCT_STAT64) 7483 struct target_stat64 *target_st; 7484 #else 7485 struct target_stat *target_st; 7486 #endif 7487 7488 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7489 return -TARGET_EFAULT; 7490 memset(target_st, 0, sizeof(*target_st)); 7491 __put_user(host_st->st_dev, &target_st->st_dev); 7492 __put_user(host_st->st_ino, &target_st->st_ino); 7493 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7494 __put_user(host_st->st_ino, &target_st->__st_ino); 7495 #endif 7496 __put_user(host_st->st_mode, &target_st->st_mode); 7497 __put_user(host_st->st_nlink, &target_st->st_nlink); 7498 __put_user(host_st->st_uid, &target_st->st_uid); 7499 __put_user(host_st->st_gid, &target_st->st_gid); 7500 __put_user(host_st->st_rdev, &target_st->st_rdev); 7501 /* XXX: better use of kernel struct */ 7502 __put_user(host_st->st_size, &target_st->st_size); 7503 __put_user(host_st->st_blksize, &target_st->st_blksize); 7504 __put_user(host_st->st_blocks, &target_st->st_blocks); 7505 __put_user(host_st->st_atime, &target_st->target_st_atime); 7506 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7507 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7508 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700 7509 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7510 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7511 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7512 #endif 7513 unlock_user_struct(target_st, target_addr, 1); 7514 } 7515 7516 return 0; 7517 } 7518 #endif 7519 7520 #if defined(TARGET_NR_statx) && defined(__NR_statx) 7521 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 7522 abi_ulong target_addr) 7523 { 7524 struct target_statx *target_stx; 7525 7526 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 7527 return -TARGET_EFAULT; 7528 } 7529 memset(target_stx, 0, sizeof(*target_stx)); 7530 7531 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 7532 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 7533 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 7534 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 7535 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 7536 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 7537 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 7538 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 7539 __put_user(host_stx->stx_size, &target_stx->stx_size); 7540 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 7541 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 7542 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 7543 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 7544 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 7545 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 7546 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 7547 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 7548 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 7549 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 7550 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 7551 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 7552 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 7553 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 7554 7555 unlock_user_struct(target_stx, target_addr, 1); 7556 7557 return 0; 7558 } 7559 #endif 7560 7561 static int do_sys_futex(int *uaddr, int op, int val, 7562 const struct timespec *timeout, int *uaddr2, 7563 int val3) 7564 { 7565 #if HOST_LONG_BITS == 64 7566 #if defined(__NR_futex) 7567 /* always a 64-bit time_t, it doesn't define _time64 version */ 7568 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7569 7570 #endif 7571 #else /* HOST_LONG_BITS == 64 */ 7572 #if defined(__NR_futex_time64) 7573 if (sizeof(timeout->tv_sec) == 8) { 7574 /* _time64 function on 32bit arch */ 7575 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 7576 } 7577 #endif 7578 #if defined(__NR_futex) 7579 /* old function on 32bit arch */ 7580 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7581 #endif 7582 #endif /* HOST_LONG_BITS == 64 */ 7583 g_assert_not_reached(); 7584 } 7585 7586 static int do_safe_futex(int *uaddr, int op, int val, 7587 const struct timespec *timeout, int *uaddr2, 7588 int val3) 7589 { 7590 #if HOST_LONG_BITS == 64 7591 #if defined(__NR_futex) 7592 /* always a 64-bit time_t, it doesn't define _time64 version */ 7593 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7594 #endif 7595 #else /* HOST_LONG_BITS == 64 */ 7596 #if defined(__NR_futex_time64) 7597 if (sizeof(timeout->tv_sec) == 8) { 7598 /* _time64 function on 32bit arch */ 7599 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 7600 val3)); 7601 } 7602 #endif 7603 #if defined(__NR_futex) 7604 /* old function on 32bit arch */ 7605 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7606 #endif 7607 #endif /* HOST_LONG_BITS == 64 */ 7608 return -TARGET_ENOSYS; 7609 } 7610 7611 /* ??? Using host futex calls even when target atomic operations 7612 are not really atomic probably breaks things. However implementing 7613 futexes locally would make futexes shared between multiple processes 7614 tricky. However they're probably useless because guest atomic 7615 operations won't work either. */ 7616 #if defined(TARGET_NR_futex) 7617 static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val, 7618 target_ulong timeout, target_ulong uaddr2, int val3) 7619 { 7620 struct timespec ts, *pts; 7621 int base_op; 7622 7623 /* ??? We assume FUTEX_* constants are the same on both host 7624 and target. */ 7625 #ifdef FUTEX_CMD_MASK 7626 base_op = op & FUTEX_CMD_MASK; 7627 #else 7628 base_op = op; 7629 #endif 7630 switch (base_op) { 7631 case FUTEX_WAIT: 7632 case FUTEX_WAIT_BITSET: 7633 if (timeout) { 7634 pts = &ts; 7635 target_to_host_timespec(pts, timeout); 7636 } else { 7637 pts = NULL; 7638 } 7639 return do_safe_futex(g2h(cpu, uaddr), 7640 op, tswap32(val), pts, NULL, val3); 7641 case FUTEX_WAKE: 7642 return do_safe_futex(g2h(cpu, uaddr), 7643 op, val, NULL, NULL, 0); 7644 case FUTEX_FD: 7645 return do_safe_futex(g2h(cpu, uaddr), 7646 op, val, NULL, NULL, 0); 7647 case FUTEX_REQUEUE: 7648 case FUTEX_CMP_REQUEUE: 7649 case FUTEX_WAKE_OP: 7650 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7651 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7652 But the prototype takes a `struct timespec *'; insert casts 7653 to satisfy the compiler. We do not need to tswap TIMEOUT 7654 since it's not compared to guest memory. */ 7655 pts = (struct timespec *)(uintptr_t) timeout; 7656 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), 7657 (base_op == FUTEX_CMP_REQUEUE 7658 ? tswap32(val3) : val3)); 7659 default: 7660 return -TARGET_ENOSYS; 7661 } 7662 } 7663 #endif 7664 7665 #if defined(TARGET_NR_futex_time64) 7666 static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op, 7667 int val, target_ulong timeout, 7668 target_ulong uaddr2, int val3) 7669 { 7670 struct timespec ts, *pts; 7671 int base_op; 7672 7673 /* ??? We assume FUTEX_* constants are the same on both host 7674 and target. */ 7675 #ifdef FUTEX_CMD_MASK 7676 base_op = op & FUTEX_CMD_MASK; 7677 #else 7678 base_op = op; 7679 #endif 7680 switch (base_op) { 7681 case FUTEX_WAIT: 7682 case FUTEX_WAIT_BITSET: 7683 if (timeout) { 7684 pts = &ts; 7685 if (target_to_host_timespec64(pts, timeout)) { 7686 return -TARGET_EFAULT; 7687 } 7688 } else { 7689 pts = NULL; 7690 } 7691 return do_safe_futex(g2h(cpu, uaddr), op, 7692 tswap32(val), pts, NULL, val3); 7693 case FUTEX_WAKE: 7694 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); 7695 case FUTEX_FD: 7696 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); 7697 case FUTEX_REQUEUE: 7698 case FUTEX_CMP_REQUEUE: 7699 case FUTEX_WAKE_OP: 7700 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7701 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7702 But the prototype takes a `struct timespec *'; insert casts 7703 to satisfy the compiler. We do not need to tswap TIMEOUT 7704 since it's not compared to guest memory. */ 7705 pts = (struct timespec *)(uintptr_t) timeout; 7706 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), 7707 (base_op == FUTEX_CMP_REQUEUE 7708 ? tswap32(val3) : val3)); 7709 default: 7710 return -TARGET_ENOSYS; 7711 } 7712 } 7713 #endif 7714 7715 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7716 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7717 abi_long handle, abi_long mount_id, 7718 abi_long flags) 7719 { 7720 struct file_handle *target_fh; 7721 struct file_handle *fh; 7722 int mid = 0; 7723 abi_long ret; 7724 char *name; 7725 unsigned int size, total_size; 7726 7727 if (get_user_s32(size, handle)) { 7728 return -TARGET_EFAULT; 7729 } 7730 7731 name = lock_user_string(pathname); 7732 if (!name) { 7733 return -TARGET_EFAULT; 7734 } 7735 7736 total_size = sizeof(struct file_handle) + size; 7737 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7738 if (!target_fh) { 7739 unlock_user(name, pathname, 0); 7740 return -TARGET_EFAULT; 7741 } 7742 7743 fh = g_malloc0(total_size); 7744 fh->handle_bytes = size; 7745 7746 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7747 unlock_user(name, pathname, 0); 7748 7749 /* man name_to_handle_at(2): 7750 * Other than the use of the handle_bytes field, the caller should treat 7751 * the file_handle structure as an opaque data type 7752 */ 7753 7754 memcpy(target_fh, fh, total_size); 7755 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7756 target_fh->handle_type = tswap32(fh->handle_type); 7757 g_free(fh); 7758 unlock_user(target_fh, handle, total_size); 7759 7760 if (put_user_s32(mid, mount_id)) { 7761 return -TARGET_EFAULT; 7762 } 7763 7764 return ret; 7765 7766 } 7767 #endif 7768 7769 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7770 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7771 abi_long flags) 7772 { 7773 struct file_handle *target_fh; 7774 struct file_handle *fh; 7775 unsigned int size, total_size; 7776 abi_long ret; 7777 7778 if (get_user_s32(size, handle)) { 7779 return -TARGET_EFAULT; 7780 } 7781 7782 total_size = sizeof(struct file_handle) + size; 7783 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7784 if (!target_fh) { 7785 return -TARGET_EFAULT; 7786 } 7787 7788 fh = g_memdup(target_fh, total_size); 7789 fh->handle_bytes = size; 7790 fh->handle_type = tswap32(target_fh->handle_type); 7791 7792 ret = get_errno(open_by_handle_at(mount_fd, fh, 7793 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7794 7795 g_free(fh); 7796 7797 unlock_user(target_fh, handle, total_size); 7798 7799 return ret; 7800 } 7801 #endif 7802 7803 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7804 7805 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7806 { 7807 int host_flags; 7808 target_sigset_t *target_mask; 7809 sigset_t host_mask; 7810 abi_long ret; 7811 7812 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 7813 return -TARGET_EINVAL; 7814 } 7815 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7816 return -TARGET_EFAULT; 7817 } 7818 7819 target_to_host_sigset(&host_mask, target_mask); 7820 7821 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7822 7823 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7824 if (ret >= 0) { 7825 fd_trans_register(ret, &target_signalfd_trans); 7826 } 7827 7828 unlock_user_struct(target_mask, mask, 0); 7829 7830 return ret; 7831 } 7832 #endif 7833 7834 /* Map host to target signal numbers for the wait family of syscalls. 7835 Assume all other status bits are the same. */ 7836 int host_to_target_waitstatus(int status) 7837 { 7838 if (WIFSIGNALED(status)) { 7839 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7840 } 7841 if (WIFSTOPPED(status)) { 7842 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7843 | (status & 0xff); 7844 } 7845 return status; 7846 } 7847 7848 static int open_self_cmdline(void *cpu_env, int fd) 7849 { 7850 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7851 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7852 int i; 7853 7854 for (i = 0; i < bprm->argc; i++) { 7855 size_t len = strlen(bprm->argv[i]) + 1; 7856 7857 if (write(fd, bprm->argv[i], len) != len) { 7858 return -1; 7859 } 7860 } 7861 7862 return 0; 7863 } 7864 7865 static int open_self_maps(void *cpu_env, int fd) 7866 { 7867 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7868 TaskState *ts = cpu->opaque; 7869 GSList *map_info = read_self_maps(); 7870 GSList *s; 7871 int count; 7872 7873 for (s = map_info; s; s = g_slist_next(s)) { 7874 MapInfo *e = (MapInfo *) s->data; 7875 7876 if (h2g_valid(e->start)) { 7877 unsigned long min = e->start; 7878 unsigned long max = e->end; 7879 int flags = page_get_flags(h2g(min)); 7880 const char *path; 7881 7882 max = h2g_valid(max - 1) ? 7883 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; 7884 7885 if (page_check_range(h2g(min), max - min, flags) == -1) { 7886 continue; 7887 } 7888 7889 if (h2g(min) == ts->info->stack_limit) { 7890 path = "[stack]"; 7891 } else { 7892 path = e->path; 7893 } 7894 7895 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 7896 " %c%c%c%c %08" PRIx64 " %s %"PRId64, 7897 h2g(min), h2g(max - 1) + 1, 7898 (flags & PAGE_READ) ? 'r' : '-', 7899 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 7900 (flags & PAGE_EXEC) ? 'x' : '-', 7901 e->is_priv ? 'p' : '-', 7902 (uint64_t) e->offset, e->dev, e->inode); 7903 if (path) { 7904 dprintf(fd, "%*s%s\n", 73 - count, "", path); 7905 } else { 7906 dprintf(fd, "\n"); 7907 } 7908 } 7909 } 7910 7911 free_self_maps(map_info); 7912 7913 #ifdef TARGET_VSYSCALL_PAGE 7914 /* 7915 * We only support execution from the vsyscall page. 7916 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 7917 */ 7918 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 7919 " --xp 00000000 00:00 0", 7920 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 7921 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]"); 7922 #endif 7923 7924 return 0; 7925 } 7926 7927 static int open_self_stat(void *cpu_env, int fd) 7928 { 7929 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7930 TaskState *ts = cpu->opaque; 7931 g_autoptr(GString) buf = g_string_new(NULL); 7932 int i; 7933 7934 for (i = 0; i < 44; i++) { 7935 if (i == 0) { 7936 /* pid */ 7937 g_string_printf(buf, FMT_pid " ", getpid()); 7938 } else if (i == 1) { 7939 /* app name */ 7940 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 7941 bin = bin ? bin + 1 : ts->bprm->argv[0]; 7942 g_string_printf(buf, "(%.15s) ", bin); 7943 } else if (i == 27) { 7944 /* stack bottom */ 7945 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 7946 } else { 7947 /* for the rest, there is MasterCard */ 7948 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 7949 } 7950 7951 if (write(fd, buf->str, buf->len) != buf->len) { 7952 return -1; 7953 } 7954 } 7955 7956 return 0; 7957 } 7958 7959 static int open_self_auxv(void *cpu_env, int fd) 7960 { 7961 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7962 TaskState *ts = cpu->opaque; 7963 abi_ulong auxv = ts->info->saved_auxv; 7964 abi_ulong len = ts->info->auxv_len; 7965 char *ptr; 7966 7967 /* 7968 * Auxiliary vector is stored in target process stack. 7969 * read in whole auxv vector and copy it to file 7970 */ 7971 ptr = lock_user(VERIFY_READ, auxv, len, 0); 7972 if (ptr != NULL) { 7973 while (len > 0) { 7974 ssize_t r; 7975 r = write(fd, ptr, len); 7976 if (r <= 0) { 7977 break; 7978 } 7979 len -= r; 7980 ptr += r; 7981 } 7982 lseek(fd, 0, SEEK_SET); 7983 unlock_user(ptr, auxv, len); 7984 } 7985 7986 return 0; 7987 } 7988 7989 static int is_proc_myself(const char *filename, const char *entry) 7990 { 7991 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 7992 filename += strlen("/proc/"); 7993 if (!strncmp(filename, "self/", strlen("self/"))) { 7994 filename += strlen("self/"); 7995 } else if (*filename >= '1' && *filename <= '9') { 7996 char myself[80]; 7997 snprintf(myself, sizeof(myself), "%d/", getpid()); 7998 if (!strncmp(filename, myself, strlen(myself))) { 7999 filename += strlen(myself); 8000 } else { 8001 return 0; 8002 } 8003 } else { 8004 return 0; 8005 } 8006 if (!strcmp(filename, entry)) { 8007 return 1; 8008 } 8009 } 8010 return 0; 8011 } 8012 8013 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \ 8014 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) 8015 static int is_proc(const char *filename, const char *entry) 8016 { 8017 return strcmp(filename, entry) == 0; 8018 } 8019 #endif 8020 8021 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 8022 static int open_net_route(void *cpu_env, int fd) 8023 { 8024 FILE *fp; 8025 char *line = NULL; 8026 size_t len = 0; 8027 ssize_t read; 8028 8029 fp = fopen("/proc/net/route", "r"); 8030 if (fp == NULL) { 8031 return -1; 8032 } 8033 8034 /* read header */ 8035 8036 read = getline(&line, &len, fp); 8037 dprintf(fd, "%s", line); 8038 8039 /* read routes */ 8040 8041 while ((read = getline(&line, &len, fp)) != -1) { 8042 char iface[16]; 8043 uint32_t dest, gw, mask; 8044 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8045 int fields; 8046 8047 fields = sscanf(line, 8048 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8049 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8050 &mask, &mtu, &window, &irtt); 8051 if (fields != 11) { 8052 continue; 8053 } 8054 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8055 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8056 metric, tswap32(mask), mtu, window, irtt); 8057 } 8058 8059 free(line); 8060 fclose(fp); 8061 8062 return 0; 8063 } 8064 #endif 8065 8066 #if defined(TARGET_SPARC) 8067 static int open_cpuinfo(void *cpu_env, int fd) 8068 { 8069 dprintf(fd, "type\t\t: sun4u\n"); 8070 return 0; 8071 } 8072 #endif 8073 8074 #if defined(TARGET_HPPA) 8075 static int open_cpuinfo(void *cpu_env, int fd) 8076 { 8077 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n"); 8078 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n"); 8079 dprintf(fd, "capabilities\t: os32\n"); 8080 dprintf(fd, "model\t\t: 9000/778/B160L\n"); 8081 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n"); 8082 return 0; 8083 } 8084 #endif 8085 8086 #if defined(TARGET_M68K) 8087 static int open_hardware(void *cpu_env, int fd) 8088 { 8089 dprintf(fd, "Model:\t\tqemu-m68k\n"); 8090 return 0; 8091 } 8092 #endif 8093 8094 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 8095 { 8096 struct fake_open { 8097 const char *filename; 8098 int (*fill)(void *cpu_env, int fd); 8099 int (*cmp)(const char *s1, const char *s2); 8100 }; 8101 const struct fake_open *fake_open; 8102 static const struct fake_open fakes[] = { 8103 { "maps", open_self_maps, is_proc_myself }, 8104 { "stat", open_self_stat, is_proc_myself }, 8105 { "auxv", open_self_auxv, is_proc_myself }, 8106 { "cmdline", open_self_cmdline, is_proc_myself }, 8107 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 8108 { "/proc/net/route", open_net_route, is_proc }, 8109 #endif 8110 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) 8111 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8112 #endif 8113 #if defined(TARGET_M68K) 8114 { "/proc/hardware", open_hardware, is_proc }, 8115 #endif 8116 { NULL, NULL, NULL } 8117 }; 8118 8119 if (is_proc_myself(pathname, "exe")) { 8120 int execfd = qemu_getauxval(AT_EXECFD); 8121 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 8122 } 8123 8124 for (fake_open = fakes; fake_open->filename; fake_open++) { 8125 if (fake_open->cmp(pathname, fake_open->filename)) { 8126 break; 8127 } 8128 } 8129 8130 if (fake_open->filename) { 8131 const char *tmpdir; 8132 char filename[PATH_MAX]; 8133 int fd, r; 8134 8135 /* create temporary file to map stat to */ 8136 tmpdir = getenv("TMPDIR"); 8137 if (!tmpdir) 8138 tmpdir = "/tmp"; 8139 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8140 fd = mkstemp(filename); 8141 if (fd < 0) { 8142 return fd; 8143 } 8144 unlink(filename); 8145 8146 if ((r = fake_open->fill(cpu_env, fd))) { 8147 int e = errno; 8148 close(fd); 8149 errno = e; 8150 return r; 8151 } 8152 lseek(fd, 0, SEEK_SET); 8153 8154 return fd; 8155 } 8156 8157 return safe_openat(dirfd, path(pathname), flags, mode); 8158 } 8159 8160 #define TIMER_MAGIC 0x0caf0000 8161 #define TIMER_MAGIC_MASK 0xffff0000 8162 8163 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8164 static target_timer_t get_timer_id(abi_long arg) 8165 { 8166 target_timer_t timerid = arg; 8167 8168 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8169 return -TARGET_EINVAL; 8170 } 8171 8172 timerid &= 0xffff; 8173 8174 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8175 return -TARGET_EINVAL; 8176 } 8177 8178 return timerid; 8179 } 8180 8181 static int target_to_host_cpu_mask(unsigned long *host_mask, 8182 size_t host_size, 8183 abi_ulong target_addr, 8184 size_t target_size) 8185 { 8186 unsigned target_bits = sizeof(abi_ulong) * 8; 8187 unsigned host_bits = sizeof(*host_mask) * 8; 8188 abi_ulong *target_mask; 8189 unsigned i, j; 8190 8191 assert(host_size >= target_size); 8192 8193 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8194 if (!target_mask) { 8195 return -TARGET_EFAULT; 8196 } 8197 memset(host_mask, 0, host_size); 8198 8199 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8200 unsigned bit = i * target_bits; 8201 abi_ulong val; 8202 8203 __get_user(val, &target_mask[i]); 8204 for (j = 0; j < target_bits; j++, bit++) { 8205 if (val & (1UL << j)) { 8206 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8207 } 8208 } 8209 } 8210 8211 unlock_user(target_mask, target_addr, 0); 8212 return 0; 8213 } 8214 8215 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8216 size_t host_size, 8217 abi_ulong target_addr, 8218 size_t target_size) 8219 { 8220 unsigned target_bits = sizeof(abi_ulong) * 8; 8221 unsigned host_bits = sizeof(*host_mask) * 8; 8222 abi_ulong *target_mask; 8223 unsigned i, j; 8224 8225 assert(host_size >= target_size); 8226 8227 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8228 if (!target_mask) { 8229 return -TARGET_EFAULT; 8230 } 8231 8232 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8233 unsigned bit = i * target_bits; 8234 abi_ulong val = 0; 8235 8236 for (j = 0; j < target_bits; j++, bit++) { 8237 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8238 val |= 1UL << j; 8239 } 8240 } 8241 __put_user(val, &target_mask[i]); 8242 } 8243 8244 unlock_user(target_mask, target_addr, target_size); 8245 return 0; 8246 } 8247 8248 /* This is an internal helper for do_syscall so that it is easier 8249 * to have a single return point, so that actions, such as logging 8250 * of syscall results, can be performed. 8251 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 8252 */ 8253 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, 8254 abi_long arg2, abi_long arg3, abi_long arg4, 8255 abi_long arg5, abi_long arg6, abi_long arg7, 8256 abi_long arg8) 8257 { 8258 CPUState *cpu = env_cpu(cpu_env); 8259 abi_long ret; 8260 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 8261 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 8262 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 8263 || defined(TARGET_NR_statx) 8264 struct stat st; 8265 #endif 8266 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 8267 || defined(TARGET_NR_fstatfs) 8268 struct statfs stfs; 8269 #endif 8270 void *p; 8271 8272 switch(num) { 8273 case TARGET_NR_exit: 8274 /* In old applications this may be used to implement _exit(2). 8275 However in threaded applications it is used for thread termination, 8276 and _exit_group is used for application termination. 8277 Do thread termination if we have more then one thread. */ 8278 8279 if (block_signals()) { 8280 return -TARGET_ERESTARTSYS; 8281 } 8282 8283 pthread_mutex_lock(&clone_lock); 8284 8285 if (CPU_NEXT(first_cpu)) { 8286 TaskState *ts = cpu->opaque; 8287 8288 object_property_set_bool(OBJECT(cpu), "realized", false, NULL); 8289 object_unref(OBJECT(cpu)); 8290 /* 8291 * At this point the CPU should be unrealized and removed 8292 * from cpu lists. We can clean-up the rest of the thread 8293 * data without the lock held. 8294 */ 8295 8296 pthread_mutex_unlock(&clone_lock); 8297 8298 if (ts->child_tidptr) { 8299 put_user_u32(0, ts->child_tidptr); 8300 do_sys_futex(g2h(cpu, ts->child_tidptr), 8301 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 8302 } 8303 thread_cpu = NULL; 8304 g_free(ts); 8305 rcu_unregister_thread(); 8306 pthread_exit(NULL); 8307 } 8308 8309 pthread_mutex_unlock(&clone_lock); 8310 preexit_cleanup(cpu_env, arg1); 8311 _exit(arg1); 8312 return 0; /* avoid warning */ 8313 case TARGET_NR_read: 8314 if (arg2 == 0 && arg3 == 0) { 8315 return get_errno(safe_read(arg1, 0, 0)); 8316 } else { 8317 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8318 return -TARGET_EFAULT; 8319 ret = get_errno(safe_read(arg1, p, arg3)); 8320 if (ret >= 0 && 8321 fd_trans_host_to_target_data(arg1)) { 8322 ret = fd_trans_host_to_target_data(arg1)(p, ret); 8323 } 8324 unlock_user(p, arg2, ret); 8325 } 8326 return ret; 8327 case TARGET_NR_write: 8328 if (arg2 == 0 && arg3 == 0) { 8329 return get_errno(safe_write(arg1, 0, 0)); 8330 } 8331 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8332 return -TARGET_EFAULT; 8333 if (fd_trans_target_to_host_data(arg1)) { 8334 void *copy = g_malloc(arg3); 8335 memcpy(copy, p, arg3); 8336 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 8337 if (ret >= 0) { 8338 ret = get_errno(safe_write(arg1, copy, ret)); 8339 } 8340 g_free(copy); 8341 } else { 8342 ret = get_errno(safe_write(arg1, p, arg3)); 8343 } 8344 unlock_user(p, arg2, 0); 8345 return ret; 8346 8347 #ifdef TARGET_NR_open 8348 case TARGET_NR_open: 8349 if (!(p = lock_user_string(arg1))) 8350 return -TARGET_EFAULT; 8351 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 8352 target_to_host_bitmask(arg2, fcntl_flags_tbl), 8353 arg3)); 8354 fd_trans_unregister(ret); 8355 unlock_user(p, arg1, 0); 8356 return ret; 8357 #endif 8358 case TARGET_NR_openat: 8359 if (!(p = lock_user_string(arg2))) 8360 return -TARGET_EFAULT; 8361 ret = get_errno(do_openat(cpu_env, arg1, p, 8362 target_to_host_bitmask(arg3, fcntl_flags_tbl), 8363 arg4)); 8364 fd_trans_unregister(ret); 8365 unlock_user(p, arg2, 0); 8366 return ret; 8367 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8368 case TARGET_NR_name_to_handle_at: 8369 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 8370 return ret; 8371 #endif 8372 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8373 case TARGET_NR_open_by_handle_at: 8374 ret = do_open_by_handle_at(arg1, arg2, arg3); 8375 fd_trans_unregister(ret); 8376 return ret; 8377 #endif 8378 case TARGET_NR_close: 8379 fd_trans_unregister(arg1); 8380 return get_errno(close(arg1)); 8381 8382 case TARGET_NR_brk: 8383 return do_brk(arg1); 8384 #ifdef TARGET_NR_fork 8385 case TARGET_NR_fork: 8386 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 8387 #endif 8388 #ifdef TARGET_NR_waitpid 8389 case TARGET_NR_waitpid: 8390 { 8391 int status; 8392 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 8393 if (!is_error(ret) && arg2 && ret 8394 && put_user_s32(host_to_target_waitstatus(status), arg2)) 8395 return -TARGET_EFAULT; 8396 } 8397 return ret; 8398 #endif 8399 #ifdef TARGET_NR_waitid 8400 case TARGET_NR_waitid: 8401 { 8402 siginfo_t info; 8403 info.si_pid = 0; 8404 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 8405 if (!is_error(ret) && arg3 && info.si_pid != 0) { 8406 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 8407 return -TARGET_EFAULT; 8408 host_to_target_siginfo(p, &info); 8409 unlock_user(p, arg3, sizeof(target_siginfo_t)); 8410 } 8411 } 8412 return ret; 8413 #endif 8414 #ifdef TARGET_NR_creat /* not on alpha */ 8415 case TARGET_NR_creat: 8416 if (!(p = lock_user_string(arg1))) 8417 return -TARGET_EFAULT; 8418 ret = get_errno(creat(p, arg2)); 8419 fd_trans_unregister(ret); 8420 unlock_user(p, arg1, 0); 8421 return ret; 8422 #endif 8423 #ifdef TARGET_NR_link 8424 case TARGET_NR_link: 8425 { 8426 void * p2; 8427 p = lock_user_string(arg1); 8428 p2 = lock_user_string(arg2); 8429 if (!p || !p2) 8430 ret = -TARGET_EFAULT; 8431 else 8432 ret = get_errno(link(p, p2)); 8433 unlock_user(p2, arg2, 0); 8434 unlock_user(p, arg1, 0); 8435 } 8436 return ret; 8437 #endif 8438 #if defined(TARGET_NR_linkat) 8439 case TARGET_NR_linkat: 8440 { 8441 void * p2 = NULL; 8442 if (!arg2 || !arg4) 8443 return -TARGET_EFAULT; 8444 p = lock_user_string(arg2); 8445 p2 = lock_user_string(arg4); 8446 if (!p || !p2) 8447 ret = -TARGET_EFAULT; 8448 else 8449 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 8450 unlock_user(p, arg2, 0); 8451 unlock_user(p2, arg4, 0); 8452 } 8453 return ret; 8454 #endif 8455 #ifdef TARGET_NR_unlink 8456 case TARGET_NR_unlink: 8457 if (!(p = lock_user_string(arg1))) 8458 return -TARGET_EFAULT; 8459 ret = get_errno(unlink(p)); 8460 unlock_user(p, arg1, 0); 8461 return ret; 8462 #endif 8463 #if defined(TARGET_NR_unlinkat) 8464 case TARGET_NR_unlinkat: 8465 if (!(p = lock_user_string(arg2))) 8466 return -TARGET_EFAULT; 8467 ret = get_errno(unlinkat(arg1, p, arg3)); 8468 unlock_user(p, arg2, 0); 8469 return ret; 8470 #endif 8471 case TARGET_NR_execve: 8472 { 8473 char **argp, **envp; 8474 int argc, envc; 8475 abi_ulong gp; 8476 abi_ulong guest_argp; 8477 abi_ulong guest_envp; 8478 abi_ulong addr; 8479 char **q; 8480 int total_size = 0; 8481 8482 argc = 0; 8483 guest_argp = arg2; 8484 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8485 if (get_user_ual(addr, gp)) 8486 return -TARGET_EFAULT; 8487 if (!addr) 8488 break; 8489 argc++; 8490 } 8491 envc = 0; 8492 guest_envp = arg3; 8493 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8494 if (get_user_ual(addr, gp)) 8495 return -TARGET_EFAULT; 8496 if (!addr) 8497 break; 8498 envc++; 8499 } 8500 8501 argp = g_new0(char *, argc + 1); 8502 envp = g_new0(char *, envc + 1); 8503 8504 for (gp = guest_argp, q = argp; gp; 8505 gp += sizeof(abi_ulong), q++) { 8506 if (get_user_ual(addr, gp)) 8507 goto execve_efault; 8508 if (!addr) 8509 break; 8510 if (!(*q = lock_user_string(addr))) 8511 goto execve_efault; 8512 total_size += strlen(*q) + 1; 8513 } 8514 *q = NULL; 8515 8516 for (gp = guest_envp, q = envp; gp; 8517 gp += sizeof(abi_ulong), q++) { 8518 if (get_user_ual(addr, gp)) 8519 goto execve_efault; 8520 if (!addr) 8521 break; 8522 if (!(*q = lock_user_string(addr))) 8523 goto execve_efault; 8524 total_size += strlen(*q) + 1; 8525 } 8526 *q = NULL; 8527 8528 if (!(p = lock_user_string(arg1))) 8529 goto execve_efault; 8530 /* Although execve() is not an interruptible syscall it is 8531 * a special case where we must use the safe_syscall wrapper: 8532 * if we allow a signal to happen before we make the host 8533 * syscall then we will 'lose' it, because at the point of 8534 * execve the process leaves QEMU's control. So we use the 8535 * safe syscall wrapper to ensure that we either take the 8536 * signal as a guest signal, or else it does not happen 8537 * before the execve completes and makes it the other 8538 * program's problem. 8539 */ 8540 ret = get_errno(safe_execve(p, argp, envp)); 8541 unlock_user(p, arg1, 0); 8542 8543 goto execve_end; 8544 8545 execve_efault: 8546 ret = -TARGET_EFAULT; 8547 8548 execve_end: 8549 for (gp = guest_argp, q = argp; *q; 8550 gp += sizeof(abi_ulong), q++) { 8551 if (get_user_ual(addr, gp) 8552 || !addr) 8553 break; 8554 unlock_user(*q, addr, 0); 8555 } 8556 for (gp = guest_envp, q = envp; *q; 8557 gp += sizeof(abi_ulong), q++) { 8558 if (get_user_ual(addr, gp) 8559 || !addr) 8560 break; 8561 unlock_user(*q, addr, 0); 8562 } 8563 8564 g_free(argp); 8565 g_free(envp); 8566 } 8567 return ret; 8568 case TARGET_NR_chdir: 8569 if (!(p = lock_user_string(arg1))) 8570 return -TARGET_EFAULT; 8571 ret = get_errno(chdir(p)); 8572 unlock_user(p, arg1, 0); 8573 return ret; 8574 #ifdef TARGET_NR_time 8575 case TARGET_NR_time: 8576 { 8577 time_t host_time; 8578 ret = get_errno(time(&host_time)); 8579 if (!is_error(ret) 8580 && arg1 8581 && put_user_sal(host_time, arg1)) 8582 return -TARGET_EFAULT; 8583 } 8584 return ret; 8585 #endif 8586 #ifdef TARGET_NR_mknod 8587 case TARGET_NR_mknod: 8588 if (!(p = lock_user_string(arg1))) 8589 return -TARGET_EFAULT; 8590 ret = get_errno(mknod(p, arg2, arg3)); 8591 unlock_user(p, arg1, 0); 8592 return ret; 8593 #endif 8594 #if defined(TARGET_NR_mknodat) 8595 case TARGET_NR_mknodat: 8596 if (!(p = lock_user_string(arg2))) 8597 return -TARGET_EFAULT; 8598 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8599 unlock_user(p, arg2, 0); 8600 return ret; 8601 #endif 8602 #ifdef TARGET_NR_chmod 8603 case TARGET_NR_chmod: 8604 if (!(p = lock_user_string(arg1))) 8605 return -TARGET_EFAULT; 8606 ret = get_errno(chmod(p, arg2)); 8607 unlock_user(p, arg1, 0); 8608 return ret; 8609 #endif 8610 #ifdef TARGET_NR_lseek 8611 case TARGET_NR_lseek: 8612 return get_errno(lseek(arg1, arg2, arg3)); 8613 #endif 8614 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8615 /* Alpha specific */ 8616 case TARGET_NR_getxpid: 8617 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); 8618 return get_errno(getpid()); 8619 #endif 8620 #ifdef TARGET_NR_getpid 8621 case TARGET_NR_getpid: 8622 return get_errno(getpid()); 8623 #endif 8624 case TARGET_NR_mount: 8625 { 8626 /* need to look at the data field */ 8627 void *p2, *p3; 8628 8629 if (arg1) { 8630 p = lock_user_string(arg1); 8631 if (!p) { 8632 return -TARGET_EFAULT; 8633 } 8634 } else { 8635 p = NULL; 8636 } 8637 8638 p2 = lock_user_string(arg2); 8639 if (!p2) { 8640 if (arg1) { 8641 unlock_user(p, arg1, 0); 8642 } 8643 return -TARGET_EFAULT; 8644 } 8645 8646 if (arg3) { 8647 p3 = lock_user_string(arg3); 8648 if (!p3) { 8649 if (arg1) { 8650 unlock_user(p, arg1, 0); 8651 } 8652 unlock_user(p2, arg2, 0); 8653 return -TARGET_EFAULT; 8654 } 8655 } else { 8656 p3 = NULL; 8657 } 8658 8659 /* FIXME - arg5 should be locked, but it isn't clear how to 8660 * do that since it's not guaranteed to be a NULL-terminated 8661 * string. 8662 */ 8663 if (!arg5) { 8664 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8665 } else { 8666 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 8667 } 8668 ret = get_errno(ret); 8669 8670 if (arg1) { 8671 unlock_user(p, arg1, 0); 8672 } 8673 unlock_user(p2, arg2, 0); 8674 if (arg3) { 8675 unlock_user(p3, arg3, 0); 8676 } 8677 } 8678 return ret; 8679 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 8680 #if defined(TARGET_NR_umount) 8681 case TARGET_NR_umount: 8682 #endif 8683 #if defined(TARGET_NR_oldumount) 8684 case TARGET_NR_oldumount: 8685 #endif 8686 if (!(p = lock_user_string(arg1))) 8687 return -TARGET_EFAULT; 8688 ret = get_errno(umount(p)); 8689 unlock_user(p, arg1, 0); 8690 return ret; 8691 #endif 8692 #ifdef TARGET_NR_stime /* not on alpha */ 8693 case TARGET_NR_stime: 8694 { 8695 struct timespec ts; 8696 ts.tv_nsec = 0; 8697 if (get_user_sal(ts.tv_sec, arg1)) { 8698 return -TARGET_EFAULT; 8699 } 8700 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 8701 } 8702 #endif 8703 #ifdef TARGET_NR_alarm /* not on alpha */ 8704 case TARGET_NR_alarm: 8705 return alarm(arg1); 8706 #endif 8707 #ifdef TARGET_NR_pause /* not on alpha */ 8708 case TARGET_NR_pause: 8709 if (!block_signals()) { 8710 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 8711 } 8712 return -TARGET_EINTR; 8713 #endif 8714 #ifdef TARGET_NR_utime 8715 case TARGET_NR_utime: 8716 { 8717 struct utimbuf tbuf, *host_tbuf; 8718 struct target_utimbuf *target_tbuf; 8719 if (arg2) { 8720 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 8721 return -TARGET_EFAULT; 8722 tbuf.actime = tswapal(target_tbuf->actime); 8723 tbuf.modtime = tswapal(target_tbuf->modtime); 8724 unlock_user_struct(target_tbuf, arg2, 0); 8725 host_tbuf = &tbuf; 8726 } else { 8727 host_tbuf = NULL; 8728 } 8729 if (!(p = lock_user_string(arg1))) 8730 return -TARGET_EFAULT; 8731 ret = get_errno(utime(p, host_tbuf)); 8732 unlock_user(p, arg1, 0); 8733 } 8734 return ret; 8735 #endif 8736 #ifdef TARGET_NR_utimes 8737 case TARGET_NR_utimes: 8738 { 8739 struct timeval *tvp, tv[2]; 8740 if (arg2) { 8741 if (copy_from_user_timeval(&tv[0], arg2) 8742 || copy_from_user_timeval(&tv[1], 8743 arg2 + sizeof(struct target_timeval))) 8744 return -TARGET_EFAULT; 8745 tvp = tv; 8746 } else { 8747 tvp = NULL; 8748 } 8749 if (!(p = lock_user_string(arg1))) 8750 return -TARGET_EFAULT; 8751 ret = get_errno(utimes(p, tvp)); 8752 unlock_user(p, arg1, 0); 8753 } 8754 return ret; 8755 #endif 8756 #if defined(TARGET_NR_futimesat) 8757 case TARGET_NR_futimesat: 8758 { 8759 struct timeval *tvp, tv[2]; 8760 if (arg3) { 8761 if (copy_from_user_timeval(&tv[0], arg3) 8762 || copy_from_user_timeval(&tv[1], 8763 arg3 + sizeof(struct target_timeval))) 8764 return -TARGET_EFAULT; 8765 tvp = tv; 8766 } else { 8767 tvp = NULL; 8768 } 8769 if (!(p = lock_user_string(arg2))) { 8770 return -TARGET_EFAULT; 8771 } 8772 ret = get_errno(futimesat(arg1, path(p), tvp)); 8773 unlock_user(p, arg2, 0); 8774 } 8775 return ret; 8776 #endif 8777 #ifdef TARGET_NR_access 8778 case TARGET_NR_access: 8779 if (!(p = lock_user_string(arg1))) { 8780 return -TARGET_EFAULT; 8781 } 8782 ret = get_errno(access(path(p), arg2)); 8783 unlock_user(p, arg1, 0); 8784 return ret; 8785 #endif 8786 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 8787 case TARGET_NR_faccessat: 8788 if (!(p = lock_user_string(arg2))) { 8789 return -TARGET_EFAULT; 8790 } 8791 ret = get_errno(faccessat(arg1, p, arg3, 0)); 8792 unlock_user(p, arg2, 0); 8793 return ret; 8794 #endif 8795 #ifdef TARGET_NR_nice /* not on alpha */ 8796 case TARGET_NR_nice: 8797 return get_errno(nice(arg1)); 8798 #endif 8799 case TARGET_NR_sync: 8800 sync(); 8801 return 0; 8802 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 8803 case TARGET_NR_syncfs: 8804 return get_errno(syncfs(arg1)); 8805 #endif 8806 case TARGET_NR_kill: 8807 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 8808 #ifdef TARGET_NR_rename 8809 case TARGET_NR_rename: 8810 { 8811 void *p2; 8812 p = lock_user_string(arg1); 8813 p2 = lock_user_string(arg2); 8814 if (!p || !p2) 8815 ret = -TARGET_EFAULT; 8816 else 8817 ret = get_errno(rename(p, p2)); 8818 unlock_user(p2, arg2, 0); 8819 unlock_user(p, arg1, 0); 8820 } 8821 return ret; 8822 #endif 8823 #if defined(TARGET_NR_renameat) 8824 case TARGET_NR_renameat: 8825 { 8826 void *p2; 8827 p = lock_user_string(arg2); 8828 p2 = lock_user_string(arg4); 8829 if (!p || !p2) 8830 ret = -TARGET_EFAULT; 8831 else 8832 ret = get_errno(renameat(arg1, p, arg3, p2)); 8833 unlock_user(p2, arg4, 0); 8834 unlock_user(p, arg2, 0); 8835 } 8836 return ret; 8837 #endif 8838 #if defined(TARGET_NR_renameat2) 8839 case TARGET_NR_renameat2: 8840 { 8841 void *p2; 8842 p = lock_user_string(arg2); 8843 p2 = lock_user_string(arg4); 8844 if (!p || !p2) { 8845 ret = -TARGET_EFAULT; 8846 } else { 8847 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 8848 } 8849 unlock_user(p2, arg4, 0); 8850 unlock_user(p, arg2, 0); 8851 } 8852 return ret; 8853 #endif 8854 #ifdef TARGET_NR_mkdir 8855 case TARGET_NR_mkdir: 8856 if (!(p = lock_user_string(arg1))) 8857 return -TARGET_EFAULT; 8858 ret = get_errno(mkdir(p, arg2)); 8859 unlock_user(p, arg1, 0); 8860 return ret; 8861 #endif 8862 #if defined(TARGET_NR_mkdirat) 8863 case TARGET_NR_mkdirat: 8864 if (!(p = lock_user_string(arg2))) 8865 return -TARGET_EFAULT; 8866 ret = get_errno(mkdirat(arg1, p, arg3)); 8867 unlock_user(p, arg2, 0); 8868 return ret; 8869 #endif 8870 #ifdef TARGET_NR_rmdir 8871 case TARGET_NR_rmdir: 8872 if (!(p = lock_user_string(arg1))) 8873 return -TARGET_EFAULT; 8874 ret = get_errno(rmdir(p)); 8875 unlock_user(p, arg1, 0); 8876 return ret; 8877 #endif 8878 case TARGET_NR_dup: 8879 ret = get_errno(dup(arg1)); 8880 if (ret >= 0) { 8881 fd_trans_dup(arg1, ret); 8882 } 8883 return ret; 8884 #ifdef TARGET_NR_pipe 8885 case TARGET_NR_pipe: 8886 return do_pipe(cpu_env, arg1, 0, 0); 8887 #endif 8888 #ifdef TARGET_NR_pipe2 8889 case TARGET_NR_pipe2: 8890 return do_pipe(cpu_env, arg1, 8891 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 8892 #endif 8893 case TARGET_NR_times: 8894 { 8895 struct target_tms *tmsp; 8896 struct tms tms; 8897 ret = get_errno(times(&tms)); 8898 if (arg1) { 8899 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 8900 if (!tmsp) 8901 return -TARGET_EFAULT; 8902 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 8903 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 8904 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 8905 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 8906 } 8907 if (!is_error(ret)) 8908 ret = host_to_target_clock_t(ret); 8909 } 8910 return ret; 8911 case TARGET_NR_acct: 8912 if (arg1 == 0) { 8913 ret = get_errno(acct(NULL)); 8914 } else { 8915 if (!(p = lock_user_string(arg1))) { 8916 return -TARGET_EFAULT; 8917 } 8918 ret = get_errno(acct(path(p))); 8919 unlock_user(p, arg1, 0); 8920 } 8921 return ret; 8922 #ifdef TARGET_NR_umount2 8923 case TARGET_NR_umount2: 8924 if (!(p = lock_user_string(arg1))) 8925 return -TARGET_EFAULT; 8926 ret = get_errno(umount2(p, arg2)); 8927 unlock_user(p, arg1, 0); 8928 return ret; 8929 #endif 8930 case TARGET_NR_ioctl: 8931 return do_ioctl(arg1, arg2, arg3); 8932 #ifdef TARGET_NR_fcntl 8933 case TARGET_NR_fcntl: 8934 return do_fcntl(arg1, arg2, arg3); 8935 #endif 8936 case TARGET_NR_setpgid: 8937 return get_errno(setpgid(arg1, arg2)); 8938 case TARGET_NR_umask: 8939 return get_errno(umask(arg1)); 8940 case TARGET_NR_chroot: 8941 if (!(p = lock_user_string(arg1))) 8942 return -TARGET_EFAULT; 8943 ret = get_errno(chroot(p)); 8944 unlock_user(p, arg1, 0); 8945 return ret; 8946 #ifdef TARGET_NR_dup2 8947 case TARGET_NR_dup2: 8948 ret = get_errno(dup2(arg1, arg2)); 8949 if (ret >= 0) { 8950 fd_trans_dup(arg1, arg2); 8951 } 8952 return ret; 8953 #endif 8954 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 8955 case TARGET_NR_dup3: 8956 { 8957 int host_flags; 8958 8959 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 8960 return -EINVAL; 8961 } 8962 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 8963 ret = get_errno(dup3(arg1, arg2, host_flags)); 8964 if (ret >= 0) { 8965 fd_trans_dup(arg1, arg2); 8966 } 8967 return ret; 8968 } 8969 #endif 8970 #ifdef TARGET_NR_getppid /* not on alpha */ 8971 case TARGET_NR_getppid: 8972 return get_errno(getppid()); 8973 #endif 8974 #ifdef TARGET_NR_getpgrp 8975 case TARGET_NR_getpgrp: 8976 return get_errno(getpgrp()); 8977 #endif 8978 case TARGET_NR_setsid: 8979 return get_errno(setsid()); 8980 #ifdef TARGET_NR_sigaction 8981 case TARGET_NR_sigaction: 8982 { 8983 #if defined(TARGET_MIPS) 8984 struct target_sigaction act, oact, *pact, *old_act; 8985 8986 if (arg2) { 8987 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8988 return -TARGET_EFAULT; 8989 act._sa_handler = old_act->_sa_handler; 8990 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 8991 act.sa_flags = old_act->sa_flags; 8992 unlock_user_struct(old_act, arg2, 0); 8993 pact = &act; 8994 } else { 8995 pact = NULL; 8996 } 8997 8998 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 8999 9000 if (!is_error(ret) && arg3) { 9001 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9002 return -TARGET_EFAULT; 9003 old_act->_sa_handler = oact._sa_handler; 9004 old_act->sa_flags = oact.sa_flags; 9005 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9006 old_act->sa_mask.sig[1] = 0; 9007 old_act->sa_mask.sig[2] = 0; 9008 old_act->sa_mask.sig[3] = 0; 9009 unlock_user_struct(old_act, arg3, 1); 9010 } 9011 #else 9012 struct target_old_sigaction *old_act; 9013 struct target_sigaction act, oact, *pact; 9014 if (arg2) { 9015 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9016 return -TARGET_EFAULT; 9017 act._sa_handler = old_act->_sa_handler; 9018 target_siginitset(&act.sa_mask, old_act->sa_mask); 9019 act.sa_flags = old_act->sa_flags; 9020 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9021 act.sa_restorer = old_act->sa_restorer; 9022 #endif 9023 unlock_user_struct(old_act, arg2, 0); 9024 pact = &act; 9025 } else { 9026 pact = NULL; 9027 } 9028 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9029 if (!is_error(ret) && arg3) { 9030 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9031 return -TARGET_EFAULT; 9032 old_act->_sa_handler = oact._sa_handler; 9033 old_act->sa_mask = oact.sa_mask.sig[0]; 9034 old_act->sa_flags = oact.sa_flags; 9035 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9036 old_act->sa_restorer = oact.sa_restorer; 9037 #endif 9038 unlock_user_struct(old_act, arg3, 1); 9039 } 9040 #endif 9041 } 9042 return ret; 9043 #endif 9044 case TARGET_NR_rt_sigaction: 9045 { 9046 /* 9047 * For Alpha and SPARC this is a 5 argument syscall, with 9048 * a 'restorer' parameter which must be copied into the 9049 * sa_restorer field of the sigaction struct. 9050 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9051 * and arg5 is the sigsetsize. 9052 */ 9053 #if defined(TARGET_ALPHA) 9054 target_ulong sigsetsize = arg4; 9055 target_ulong restorer = arg5; 9056 #elif defined(TARGET_SPARC) 9057 target_ulong restorer = arg4; 9058 target_ulong sigsetsize = arg5; 9059 #else 9060 target_ulong sigsetsize = arg4; 9061 target_ulong restorer = 0; 9062 #endif 9063 struct target_sigaction *act; 9064 struct target_sigaction *oact; 9065 9066 if (sigsetsize != sizeof(target_sigset_t)) { 9067 return -TARGET_EINVAL; 9068 } 9069 if (arg2) { 9070 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9071 return -TARGET_EFAULT; 9072 } 9073 } else { 9074 act = NULL; 9075 } 9076 if (arg3) { 9077 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9078 ret = -TARGET_EFAULT; 9079 goto rt_sigaction_fail; 9080 } 9081 } else 9082 oact = NULL; 9083 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9084 rt_sigaction_fail: 9085 if (act) 9086 unlock_user_struct(act, arg2, 0); 9087 if (oact) 9088 unlock_user_struct(oact, arg3, 1); 9089 } 9090 return ret; 9091 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9092 case TARGET_NR_sgetmask: 9093 { 9094 sigset_t cur_set; 9095 abi_ulong target_set; 9096 ret = do_sigprocmask(0, NULL, &cur_set); 9097 if (!ret) { 9098 host_to_target_old_sigset(&target_set, &cur_set); 9099 ret = target_set; 9100 } 9101 } 9102 return ret; 9103 #endif 9104 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9105 case TARGET_NR_ssetmask: 9106 { 9107 sigset_t set, oset; 9108 abi_ulong target_set = arg1; 9109 target_to_host_old_sigset(&set, &target_set); 9110 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9111 if (!ret) { 9112 host_to_target_old_sigset(&target_set, &oset); 9113 ret = target_set; 9114 } 9115 } 9116 return ret; 9117 #endif 9118 #ifdef TARGET_NR_sigprocmask 9119 case TARGET_NR_sigprocmask: 9120 { 9121 #if defined(TARGET_ALPHA) 9122 sigset_t set, oldset; 9123 abi_ulong mask; 9124 int how; 9125 9126 switch (arg1) { 9127 case TARGET_SIG_BLOCK: 9128 how = SIG_BLOCK; 9129 break; 9130 case TARGET_SIG_UNBLOCK: 9131 how = SIG_UNBLOCK; 9132 break; 9133 case TARGET_SIG_SETMASK: 9134 how = SIG_SETMASK; 9135 break; 9136 default: 9137 return -TARGET_EINVAL; 9138 } 9139 mask = arg2; 9140 target_to_host_old_sigset(&set, &mask); 9141 9142 ret = do_sigprocmask(how, &set, &oldset); 9143 if (!is_error(ret)) { 9144 host_to_target_old_sigset(&mask, &oldset); 9145 ret = mask; 9146 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ 9147 } 9148 #else 9149 sigset_t set, oldset, *set_ptr; 9150 int how; 9151 9152 if (arg2) { 9153 switch (arg1) { 9154 case TARGET_SIG_BLOCK: 9155 how = SIG_BLOCK; 9156 break; 9157 case TARGET_SIG_UNBLOCK: 9158 how = SIG_UNBLOCK; 9159 break; 9160 case TARGET_SIG_SETMASK: 9161 how = SIG_SETMASK; 9162 break; 9163 default: 9164 return -TARGET_EINVAL; 9165 } 9166 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 9167 return -TARGET_EFAULT; 9168 target_to_host_old_sigset(&set, p); 9169 unlock_user(p, arg2, 0); 9170 set_ptr = &set; 9171 } else { 9172 how = 0; 9173 set_ptr = NULL; 9174 } 9175 ret = do_sigprocmask(how, set_ptr, &oldset); 9176 if (!is_error(ret) && arg3) { 9177 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9178 return -TARGET_EFAULT; 9179 host_to_target_old_sigset(p, &oldset); 9180 unlock_user(p, arg3, sizeof(target_sigset_t)); 9181 } 9182 #endif 9183 } 9184 return ret; 9185 #endif 9186 case TARGET_NR_rt_sigprocmask: 9187 { 9188 int how = arg1; 9189 sigset_t set, oldset, *set_ptr; 9190 9191 if (arg4 != sizeof(target_sigset_t)) { 9192 return -TARGET_EINVAL; 9193 } 9194 9195 if (arg2) { 9196 switch(how) { 9197 case TARGET_SIG_BLOCK: 9198 how = SIG_BLOCK; 9199 break; 9200 case TARGET_SIG_UNBLOCK: 9201 how = SIG_UNBLOCK; 9202 break; 9203 case TARGET_SIG_SETMASK: 9204 how = SIG_SETMASK; 9205 break; 9206 default: 9207 return -TARGET_EINVAL; 9208 } 9209 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 9210 return -TARGET_EFAULT; 9211 target_to_host_sigset(&set, p); 9212 unlock_user(p, arg2, 0); 9213 set_ptr = &set; 9214 } else { 9215 how = 0; 9216 set_ptr = NULL; 9217 } 9218 ret = do_sigprocmask(how, set_ptr, &oldset); 9219 if (!is_error(ret) && arg3) { 9220 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9221 return -TARGET_EFAULT; 9222 host_to_target_sigset(p, &oldset); 9223 unlock_user(p, arg3, sizeof(target_sigset_t)); 9224 } 9225 } 9226 return ret; 9227 #ifdef TARGET_NR_sigpending 9228 case TARGET_NR_sigpending: 9229 { 9230 sigset_t set; 9231 ret = get_errno(sigpending(&set)); 9232 if (!is_error(ret)) { 9233 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9234 return -TARGET_EFAULT; 9235 host_to_target_old_sigset(p, &set); 9236 unlock_user(p, arg1, sizeof(target_sigset_t)); 9237 } 9238 } 9239 return ret; 9240 #endif 9241 case TARGET_NR_rt_sigpending: 9242 { 9243 sigset_t set; 9244 9245 /* Yes, this check is >, not != like most. We follow the kernel's 9246 * logic and it does it like this because it implements 9247 * NR_sigpending through the same code path, and in that case 9248 * the old_sigset_t is smaller in size. 9249 */ 9250 if (arg2 > sizeof(target_sigset_t)) { 9251 return -TARGET_EINVAL; 9252 } 9253 9254 ret = get_errno(sigpending(&set)); 9255 if (!is_error(ret)) { 9256 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9257 return -TARGET_EFAULT; 9258 host_to_target_sigset(p, &set); 9259 unlock_user(p, arg1, sizeof(target_sigset_t)); 9260 } 9261 } 9262 return ret; 9263 #ifdef TARGET_NR_sigsuspend 9264 case TARGET_NR_sigsuspend: 9265 { 9266 TaskState *ts = cpu->opaque; 9267 #if defined(TARGET_ALPHA) 9268 abi_ulong mask = arg1; 9269 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask); 9270 #else 9271 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9272 return -TARGET_EFAULT; 9273 target_to_host_old_sigset(&ts->sigsuspend_mask, p); 9274 unlock_user(p, arg1, 0); 9275 #endif 9276 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 9277 SIGSET_T_SIZE)); 9278 if (ret != -TARGET_ERESTARTSYS) { 9279 ts->in_sigsuspend = 1; 9280 } 9281 } 9282 return ret; 9283 #endif 9284 case TARGET_NR_rt_sigsuspend: 9285 { 9286 TaskState *ts = cpu->opaque; 9287 9288 if (arg2 != sizeof(target_sigset_t)) { 9289 return -TARGET_EINVAL; 9290 } 9291 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9292 return -TARGET_EFAULT; 9293 target_to_host_sigset(&ts->sigsuspend_mask, p); 9294 unlock_user(p, arg1, 0); 9295 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 9296 SIGSET_T_SIZE)); 9297 if (ret != -TARGET_ERESTARTSYS) { 9298 ts->in_sigsuspend = 1; 9299 } 9300 } 9301 return ret; 9302 #ifdef TARGET_NR_rt_sigtimedwait 9303 case TARGET_NR_rt_sigtimedwait: 9304 { 9305 sigset_t set; 9306 struct timespec uts, *puts; 9307 siginfo_t uinfo; 9308 9309 if (arg4 != sizeof(target_sigset_t)) { 9310 return -TARGET_EINVAL; 9311 } 9312 9313 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9314 return -TARGET_EFAULT; 9315 target_to_host_sigset(&set, p); 9316 unlock_user(p, arg1, 0); 9317 if (arg3) { 9318 puts = &uts; 9319 if (target_to_host_timespec(puts, arg3)) { 9320 return -TARGET_EFAULT; 9321 } 9322 } else { 9323 puts = NULL; 9324 } 9325 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9326 SIGSET_T_SIZE)); 9327 if (!is_error(ret)) { 9328 if (arg2) { 9329 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 9330 0); 9331 if (!p) { 9332 return -TARGET_EFAULT; 9333 } 9334 host_to_target_siginfo(p, &uinfo); 9335 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9336 } 9337 ret = host_to_target_signal(ret); 9338 } 9339 } 9340 return ret; 9341 #endif 9342 #ifdef TARGET_NR_rt_sigtimedwait_time64 9343 case TARGET_NR_rt_sigtimedwait_time64: 9344 { 9345 sigset_t set; 9346 struct timespec uts, *puts; 9347 siginfo_t uinfo; 9348 9349 if (arg4 != sizeof(target_sigset_t)) { 9350 return -TARGET_EINVAL; 9351 } 9352 9353 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 9354 if (!p) { 9355 return -TARGET_EFAULT; 9356 } 9357 target_to_host_sigset(&set, p); 9358 unlock_user(p, arg1, 0); 9359 if (arg3) { 9360 puts = &uts; 9361 if (target_to_host_timespec64(puts, arg3)) { 9362 return -TARGET_EFAULT; 9363 } 9364 } else { 9365 puts = NULL; 9366 } 9367 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9368 SIGSET_T_SIZE)); 9369 if (!is_error(ret)) { 9370 if (arg2) { 9371 p = lock_user(VERIFY_WRITE, arg2, 9372 sizeof(target_siginfo_t), 0); 9373 if (!p) { 9374 return -TARGET_EFAULT; 9375 } 9376 host_to_target_siginfo(p, &uinfo); 9377 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9378 } 9379 ret = host_to_target_signal(ret); 9380 } 9381 } 9382 return ret; 9383 #endif 9384 case TARGET_NR_rt_sigqueueinfo: 9385 { 9386 siginfo_t uinfo; 9387 9388 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9389 if (!p) { 9390 return -TARGET_EFAULT; 9391 } 9392 target_to_host_siginfo(&uinfo, p); 9393 unlock_user(p, arg3, 0); 9394 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); 9395 } 9396 return ret; 9397 case TARGET_NR_rt_tgsigqueueinfo: 9398 { 9399 siginfo_t uinfo; 9400 9401 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 9402 if (!p) { 9403 return -TARGET_EFAULT; 9404 } 9405 target_to_host_siginfo(&uinfo, p); 9406 unlock_user(p, arg4, 0); 9407 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo)); 9408 } 9409 return ret; 9410 #ifdef TARGET_NR_sigreturn 9411 case TARGET_NR_sigreturn: 9412 if (block_signals()) { 9413 return -TARGET_ERESTARTSYS; 9414 } 9415 return do_sigreturn(cpu_env); 9416 #endif 9417 case TARGET_NR_rt_sigreturn: 9418 if (block_signals()) { 9419 return -TARGET_ERESTARTSYS; 9420 } 9421 return do_rt_sigreturn(cpu_env); 9422 case TARGET_NR_sethostname: 9423 if (!(p = lock_user_string(arg1))) 9424 return -TARGET_EFAULT; 9425 ret = get_errno(sethostname(p, arg2)); 9426 unlock_user(p, arg1, 0); 9427 return ret; 9428 #ifdef TARGET_NR_setrlimit 9429 case TARGET_NR_setrlimit: 9430 { 9431 int resource = target_to_host_resource(arg1); 9432 struct target_rlimit *target_rlim; 9433 struct rlimit rlim; 9434 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 9435 return -TARGET_EFAULT; 9436 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 9437 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 9438 unlock_user_struct(target_rlim, arg2, 0); 9439 /* 9440 * If we just passed through resource limit settings for memory then 9441 * they would also apply to QEMU's own allocations, and QEMU will 9442 * crash or hang or die if its allocations fail. Ideally we would 9443 * track the guest allocations in QEMU and apply the limits ourselves. 9444 * For now, just tell the guest the call succeeded but don't actually 9445 * limit anything. 9446 */ 9447 if (resource != RLIMIT_AS && 9448 resource != RLIMIT_DATA && 9449 resource != RLIMIT_STACK) { 9450 return get_errno(setrlimit(resource, &rlim)); 9451 } else { 9452 return 0; 9453 } 9454 } 9455 #endif 9456 #ifdef TARGET_NR_getrlimit 9457 case TARGET_NR_getrlimit: 9458 { 9459 int resource = target_to_host_resource(arg1); 9460 struct target_rlimit *target_rlim; 9461 struct rlimit rlim; 9462 9463 ret = get_errno(getrlimit(resource, &rlim)); 9464 if (!is_error(ret)) { 9465 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 9466 return -TARGET_EFAULT; 9467 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 9468 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 9469 unlock_user_struct(target_rlim, arg2, 1); 9470 } 9471 } 9472 return ret; 9473 #endif 9474 case TARGET_NR_getrusage: 9475 { 9476 struct rusage rusage; 9477 ret = get_errno(getrusage(arg1, &rusage)); 9478 if (!is_error(ret)) { 9479 ret = host_to_target_rusage(arg2, &rusage); 9480 } 9481 } 9482 return ret; 9483 #if defined(TARGET_NR_gettimeofday) 9484 case TARGET_NR_gettimeofday: 9485 { 9486 struct timeval tv; 9487 struct timezone tz; 9488 9489 ret = get_errno(gettimeofday(&tv, &tz)); 9490 if (!is_error(ret)) { 9491 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 9492 return -TARGET_EFAULT; 9493 } 9494 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 9495 return -TARGET_EFAULT; 9496 } 9497 } 9498 } 9499 return ret; 9500 #endif 9501 #if defined(TARGET_NR_settimeofday) 9502 case TARGET_NR_settimeofday: 9503 { 9504 struct timeval tv, *ptv = NULL; 9505 struct timezone tz, *ptz = NULL; 9506 9507 if (arg1) { 9508 if (copy_from_user_timeval(&tv, arg1)) { 9509 return -TARGET_EFAULT; 9510 } 9511 ptv = &tv; 9512 } 9513 9514 if (arg2) { 9515 if (copy_from_user_timezone(&tz, arg2)) { 9516 return -TARGET_EFAULT; 9517 } 9518 ptz = &tz; 9519 } 9520 9521 return get_errno(settimeofday(ptv, ptz)); 9522 } 9523 #endif 9524 #if defined(TARGET_NR_select) 9525 case TARGET_NR_select: 9526 #if defined(TARGET_WANT_NI_OLD_SELECT) 9527 /* some architectures used to have old_select here 9528 * but now ENOSYS it. 9529 */ 9530 ret = -TARGET_ENOSYS; 9531 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 9532 ret = do_old_select(arg1); 9533 #else 9534 ret = do_select(arg1, arg2, arg3, arg4, arg5); 9535 #endif 9536 return ret; 9537 #endif 9538 #ifdef TARGET_NR_pselect6 9539 case TARGET_NR_pselect6: 9540 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 9541 #endif 9542 #ifdef TARGET_NR_pselect6_time64 9543 case TARGET_NR_pselect6_time64: 9544 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 9545 #endif 9546 #ifdef TARGET_NR_symlink 9547 case TARGET_NR_symlink: 9548 { 9549 void *p2; 9550 p = lock_user_string(arg1); 9551 p2 = lock_user_string(arg2); 9552 if (!p || !p2) 9553 ret = -TARGET_EFAULT; 9554 else 9555 ret = get_errno(symlink(p, p2)); 9556 unlock_user(p2, arg2, 0); 9557 unlock_user(p, arg1, 0); 9558 } 9559 return ret; 9560 #endif 9561 #if defined(TARGET_NR_symlinkat) 9562 case TARGET_NR_symlinkat: 9563 { 9564 void *p2; 9565 p = lock_user_string(arg1); 9566 p2 = lock_user_string(arg3); 9567 if (!p || !p2) 9568 ret = -TARGET_EFAULT; 9569 else 9570 ret = get_errno(symlinkat(p, arg2, p2)); 9571 unlock_user(p2, arg3, 0); 9572 unlock_user(p, arg1, 0); 9573 } 9574 return ret; 9575 #endif 9576 #ifdef TARGET_NR_readlink 9577 case TARGET_NR_readlink: 9578 { 9579 void *p2; 9580 p = lock_user_string(arg1); 9581 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9582 if (!p || !p2) { 9583 ret = -TARGET_EFAULT; 9584 } else if (!arg3) { 9585 /* Short circuit this for the magic exe check. */ 9586 ret = -TARGET_EINVAL; 9587 } else if (is_proc_myself((const char *)p, "exe")) { 9588 char real[PATH_MAX], *temp; 9589 temp = realpath(exec_path, real); 9590 /* Return value is # of bytes that we wrote to the buffer. */ 9591 if (temp == NULL) { 9592 ret = get_errno(-1); 9593 } else { 9594 /* Don't worry about sign mismatch as earlier mapping 9595 * logic would have thrown a bad address error. */ 9596 ret = MIN(strlen(real), arg3); 9597 /* We cannot NUL terminate the string. */ 9598 memcpy(p2, real, ret); 9599 } 9600 } else { 9601 ret = get_errno(readlink(path(p), p2, arg3)); 9602 } 9603 unlock_user(p2, arg2, ret); 9604 unlock_user(p, arg1, 0); 9605 } 9606 return ret; 9607 #endif 9608 #if defined(TARGET_NR_readlinkat) 9609 case TARGET_NR_readlinkat: 9610 { 9611 void *p2; 9612 p = lock_user_string(arg2); 9613 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9614 if (!p || !p2) { 9615 ret = -TARGET_EFAULT; 9616 } else if (is_proc_myself((const char *)p, "exe")) { 9617 char real[PATH_MAX], *temp; 9618 temp = realpath(exec_path, real); 9619 ret = temp == NULL ? get_errno(-1) : strlen(real) ; 9620 snprintf((char *)p2, arg4, "%s", real); 9621 } else { 9622 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9623 } 9624 unlock_user(p2, arg3, ret); 9625 unlock_user(p, arg2, 0); 9626 } 9627 return ret; 9628 #endif 9629 #ifdef TARGET_NR_swapon 9630 case TARGET_NR_swapon: 9631 if (!(p = lock_user_string(arg1))) 9632 return -TARGET_EFAULT; 9633 ret = get_errno(swapon(p, arg2)); 9634 unlock_user(p, arg1, 0); 9635 return ret; 9636 #endif 9637 case TARGET_NR_reboot: 9638 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9639 /* arg4 must be ignored in all other cases */ 9640 p = lock_user_string(arg4); 9641 if (!p) { 9642 return -TARGET_EFAULT; 9643 } 9644 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9645 unlock_user(p, arg4, 0); 9646 } else { 9647 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9648 } 9649 return ret; 9650 #ifdef TARGET_NR_mmap 9651 case TARGET_NR_mmap: 9652 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9653 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9654 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9655 || defined(TARGET_S390X) 9656 { 9657 abi_ulong *v; 9658 abi_ulong v1, v2, v3, v4, v5, v6; 9659 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9660 return -TARGET_EFAULT; 9661 v1 = tswapal(v[0]); 9662 v2 = tswapal(v[1]); 9663 v3 = tswapal(v[2]); 9664 v4 = tswapal(v[3]); 9665 v5 = tswapal(v[4]); 9666 v6 = tswapal(v[5]); 9667 unlock_user(v, arg1, 0); 9668 ret = get_errno(target_mmap(v1, v2, v3, 9669 target_to_host_bitmask(v4, mmap_flags_tbl), 9670 v5, v6)); 9671 } 9672 #else 9673 /* mmap pointers are always untagged */ 9674 ret = get_errno(target_mmap(arg1, arg2, arg3, 9675 target_to_host_bitmask(arg4, mmap_flags_tbl), 9676 arg5, 9677 arg6)); 9678 #endif 9679 return ret; 9680 #endif 9681 #ifdef TARGET_NR_mmap2 9682 case TARGET_NR_mmap2: 9683 #ifndef MMAP_SHIFT 9684 #define MMAP_SHIFT 12 9685 #endif 9686 ret = target_mmap(arg1, arg2, arg3, 9687 target_to_host_bitmask(arg4, mmap_flags_tbl), 9688 arg5, arg6 << MMAP_SHIFT); 9689 return get_errno(ret); 9690 #endif 9691 case TARGET_NR_munmap: 9692 arg1 = cpu_untagged_addr(cpu, arg1); 9693 return get_errno(target_munmap(arg1, arg2)); 9694 case TARGET_NR_mprotect: 9695 arg1 = cpu_untagged_addr(cpu, arg1); 9696 { 9697 TaskState *ts = cpu->opaque; 9698 /* Special hack to detect libc making the stack executable. */ 9699 if ((arg3 & PROT_GROWSDOWN) 9700 && arg1 >= ts->info->stack_limit 9701 && arg1 <= ts->info->start_stack) { 9702 arg3 &= ~PROT_GROWSDOWN; 9703 arg2 = arg2 + arg1 - ts->info->stack_limit; 9704 arg1 = ts->info->stack_limit; 9705 } 9706 } 9707 return get_errno(target_mprotect(arg1, arg2, arg3)); 9708 #ifdef TARGET_NR_mremap 9709 case TARGET_NR_mremap: 9710 arg1 = cpu_untagged_addr(cpu, arg1); 9711 /* mremap new_addr (arg5) is always untagged */ 9712 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 9713 #endif 9714 /* ??? msync/mlock/munlock are broken for softmmu. */ 9715 #ifdef TARGET_NR_msync 9716 case TARGET_NR_msync: 9717 return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); 9718 #endif 9719 #ifdef TARGET_NR_mlock 9720 case TARGET_NR_mlock: 9721 return get_errno(mlock(g2h(cpu, arg1), arg2)); 9722 #endif 9723 #ifdef TARGET_NR_munlock 9724 case TARGET_NR_munlock: 9725 return get_errno(munlock(g2h(cpu, arg1), arg2)); 9726 #endif 9727 #ifdef TARGET_NR_mlockall 9728 case TARGET_NR_mlockall: 9729 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 9730 #endif 9731 #ifdef TARGET_NR_munlockall 9732 case TARGET_NR_munlockall: 9733 return get_errno(munlockall()); 9734 #endif 9735 #ifdef TARGET_NR_truncate 9736 case TARGET_NR_truncate: 9737 if (!(p = lock_user_string(arg1))) 9738 return -TARGET_EFAULT; 9739 ret = get_errno(truncate(p, arg2)); 9740 unlock_user(p, arg1, 0); 9741 return ret; 9742 #endif 9743 #ifdef TARGET_NR_ftruncate 9744 case TARGET_NR_ftruncate: 9745 return get_errno(ftruncate(arg1, arg2)); 9746 #endif 9747 case TARGET_NR_fchmod: 9748 return get_errno(fchmod(arg1, arg2)); 9749 #if defined(TARGET_NR_fchmodat) 9750 case TARGET_NR_fchmodat: 9751 if (!(p = lock_user_string(arg2))) 9752 return -TARGET_EFAULT; 9753 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 9754 unlock_user(p, arg2, 0); 9755 return ret; 9756 #endif 9757 case TARGET_NR_getpriority: 9758 /* Note that negative values are valid for getpriority, so we must 9759 differentiate based on errno settings. */ 9760 errno = 0; 9761 ret = getpriority(arg1, arg2); 9762 if (ret == -1 && errno != 0) { 9763 return -host_to_target_errno(errno); 9764 } 9765 #ifdef TARGET_ALPHA 9766 /* Return value is the unbiased priority. Signal no error. */ 9767 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; 9768 #else 9769 /* Return value is a biased priority to avoid negative numbers. */ 9770 ret = 20 - ret; 9771 #endif 9772 return ret; 9773 case TARGET_NR_setpriority: 9774 return get_errno(setpriority(arg1, arg2, arg3)); 9775 #ifdef TARGET_NR_statfs 9776 case TARGET_NR_statfs: 9777 if (!(p = lock_user_string(arg1))) { 9778 return -TARGET_EFAULT; 9779 } 9780 ret = get_errno(statfs(path(p), &stfs)); 9781 unlock_user(p, arg1, 0); 9782 convert_statfs: 9783 if (!is_error(ret)) { 9784 struct target_statfs *target_stfs; 9785 9786 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 9787 return -TARGET_EFAULT; 9788 __put_user(stfs.f_type, &target_stfs->f_type); 9789 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9790 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9791 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9792 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9793 __put_user(stfs.f_files, &target_stfs->f_files); 9794 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9795 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9796 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9797 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9798 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9799 #ifdef _STATFS_F_FLAGS 9800 __put_user(stfs.f_flags, &target_stfs->f_flags); 9801 #else 9802 __put_user(0, &target_stfs->f_flags); 9803 #endif 9804 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9805 unlock_user_struct(target_stfs, arg2, 1); 9806 } 9807 return ret; 9808 #endif 9809 #ifdef TARGET_NR_fstatfs 9810 case TARGET_NR_fstatfs: 9811 ret = get_errno(fstatfs(arg1, &stfs)); 9812 goto convert_statfs; 9813 #endif 9814 #ifdef TARGET_NR_statfs64 9815 case TARGET_NR_statfs64: 9816 if (!(p = lock_user_string(arg1))) { 9817 return -TARGET_EFAULT; 9818 } 9819 ret = get_errno(statfs(path(p), &stfs)); 9820 unlock_user(p, arg1, 0); 9821 convert_statfs64: 9822 if (!is_error(ret)) { 9823 struct target_statfs64 *target_stfs; 9824 9825 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 9826 return -TARGET_EFAULT; 9827 __put_user(stfs.f_type, &target_stfs->f_type); 9828 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9829 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9830 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9831 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9832 __put_user(stfs.f_files, &target_stfs->f_files); 9833 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9834 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9835 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9836 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9837 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9838 #ifdef _STATFS_F_FLAGS 9839 __put_user(stfs.f_flags, &target_stfs->f_flags); 9840 #else 9841 __put_user(0, &target_stfs->f_flags); 9842 #endif 9843 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9844 unlock_user_struct(target_stfs, arg3, 1); 9845 } 9846 return ret; 9847 case TARGET_NR_fstatfs64: 9848 ret = get_errno(fstatfs(arg1, &stfs)); 9849 goto convert_statfs64; 9850 #endif 9851 #ifdef TARGET_NR_socketcall 9852 case TARGET_NR_socketcall: 9853 return do_socketcall(arg1, arg2); 9854 #endif 9855 #ifdef TARGET_NR_accept 9856 case TARGET_NR_accept: 9857 return do_accept4(arg1, arg2, arg3, 0); 9858 #endif 9859 #ifdef TARGET_NR_accept4 9860 case TARGET_NR_accept4: 9861 return do_accept4(arg1, arg2, arg3, arg4); 9862 #endif 9863 #ifdef TARGET_NR_bind 9864 case TARGET_NR_bind: 9865 return do_bind(arg1, arg2, arg3); 9866 #endif 9867 #ifdef TARGET_NR_connect 9868 case TARGET_NR_connect: 9869 return do_connect(arg1, arg2, arg3); 9870 #endif 9871 #ifdef TARGET_NR_getpeername 9872 case TARGET_NR_getpeername: 9873 return do_getpeername(arg1, arg2, arg3); 9874 #endif 9875 #ifdef TARGET_NR_getsockname 9876 case TARGET_NR_getsockname: 9877 return do_getsockname(arg1, arg2, arg3); 9878 #endif 9879 #ifdef TARGET_NR_getsockopt 9880 case TARGET_NR_getsockopt: 9881 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 9882 #endif 9883 #ifdef TARGET_NR_listen 9884 case TARGET_NR_listen: 9885 return get_errno(listen(arg1, arg2)); 9886 #endif 9887 #ifdef TARGET_NR_recv 9888 case TARGET_NR_recv: 9889 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 9890 #endif 9891 #ifdef TARGET_NR_recvfrom 9892 case TARGET_NR_recvfrom: 9893 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 9894 #endif 9895 #ifdef TARGET_NR_recvmsg 9896 case TARGET_NR_recvmsg: 9897 return do_sendrecvmsg(arg1, arg2, arg3, 0); 9898 #endif 9899 #ifdef TARGET_NR_send 9900 case TARGET_NR_send: 9901 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 9902 #endif 9903 #ifdef TARGET_NR_sendmsg 9904 case TARGET_NR_sendmsg: 9905 return do_sendrecvmsg(arg1, arg2, arg3, 1); 9906 #endif 9907 #ifdef TARGET_NR_sendmmsg 9908 case TARGET_NR_sendmmsg: 9909 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 9910 #endif 9911 #ifdef TARGET_NR_recvmmsg 9912 case TARGET_NR_recvmmsg: 9913 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 9914 #endif 9915 #ifdef TARGET_NR_sendto 9916 case TARGET_NR_sendto: 9917 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 9918 #endif 9919 #ifdef TARGET_NR_shutdown 9920 case TARGET_NR_shutdown: 9921 return get_errno(shutdown(arg1, arg2)); 9922 #endif 9923 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 9924 case TARGET_NR_getrandom: 9925 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 9926 if (!p) { 9927 return -TARGET_EFAULT; 9928 } 9929 ret = get_errno(getrandom(p, arg2, arg3)); 9930 unlock_user(p, arg1, ret); 9931 return ret; 9932 #endif 9933 #ifdef TARGET_NR_socket 9934 case TARGET_NR_socket: 9935 return do_socket(arg1, arg2, arg3); 9936 #endif 9937 #ifdef TARGET_NR_socketpair 9938 case TARGET_NR_socketpair: 9939 return do_socketpair(arg1, arg2, arg3, arg4); 9940 #endif 9941 #ifdef TARGET_NR_setsockopt 9942 case TARGET_NR_setsockopt: 9943 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 9944 #endif 9945 #if defined(TARGET_NR_syslog) 9946 case TARGET_NR_syslog: 9947 { 9948 int len = arg2; 9949 9950 switch (arg1) { 9951 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 9952 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 9953 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 9954 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 9955 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 9956 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 9957 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 9958 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 9959 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 9960 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 9961 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 9962 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 9963 { 9964 if (len < 0) { 9965 return -TARGET_EINVAL; 9966 } 9967 if (len == 0) { 9968 return 0; 9969 } 9970 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9971 if (!p) { 9972 return -TARGET_EFAULT; 9973 } 9974 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 9975 unlock_user(p, arg2, arg3); 9976 } 9977 return ret; 9978 default: 9979 return -TARGET_EINVAL; 9980 } 9981 } 9982 break; 9983 #endif 9984 case TARGET_NR_setitimer: 9985 { 9986 struct itimerval value, ovalue, *pvalue; 9987 9988 if (arg2) { 9989 pvalue = &value; 9990 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 9991 || copy_from_user_timeval(&pvalue->it_value, 9992 arg2 + sizeof(struct target_timeval))) 9993 return -TARGET_EFAULT; 9994 } else { 9995 pvalue = NULL; 9996 } 9997 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 9998 if (!is_error(ret) && arg3) { 9999 if (copy_to_user_timeval(arg3, 10000 &ovalue.it_interval) 10001 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10002 &ovalue.it_value)) 10003 return -TARGET_EFAULT; 10004 } 10005 } 10006 return ret; 10007 case TARGET_NR_getitimer: 10008 { 10009 struct itimerval value; 10010 10011 ret = get_errno(getitimer(arg1, &value)); 10012 if (!is_error(ret) && arg2) { 10013 if (copy_to_user_timeval(arg2, 10014 &value.it_interval) 10015 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10016 &value.it_value)) 10017 return -TARGET_EFAULT; 10018 } 10019 } 10020 return ret; 10021 #ifdef TARGET_NR_stat 10022 case TARGET_NR_stat: 10023 if (!(p = lock_user_string(arg1))) { 10024 return -TARGET_EFAULT; 10025 } 10026 ret = get_errno(stat(path(p), &st)); 10027 unlock_user(p, arg1, 0); 10028 goto do_stat; 10029 #endif 10030 #ifdef TARGET_NR_lstat 10031 case TARGET_NR_lstat: 10032 if (!(p = lock_user_string(arg1))) { 10033 return -TARGET_EFAULT; 10034 } 10035 ret = get_errno(lstat(path(p), &st)); 10036 unlock_user(p, arg1, 0); 10037 goto do_stat; 10038 #endif 10039 #ifdef TARGET_NR_fstat 10040 case TARGET_NR_fstat: 10041 { 10042 ret = get_errno(fstat(arg1, &st)); 10043 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10044 do_stat: 10045 #endif 10046 if (!is_error(ret)) { 10047 struct target_stat *target_st; 10048 10049 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10050 return -TARGET_EFAULT; 10051 memset(target_st, 0, sizeof(*target_st)); 10052 __put_user(st.st_dev, &target_st->st_dev); 10053 __put_user(st.st_ino, &target_st->st_ino); 10054 __put_user(st.st_mode, &target_st->st_mode); 10055 __put_user(st.st_uid, &target_st->st_uid); 10056 __put_user(st.st_gid, &target_st->st_gid); 10057 __put_user(st.st_nlink, &target_st->st_nlink); 10058 __put_user(st.st_rdev, &target_st->st_rdev); 10059 __put_user(st.st_size, &target_st->st_size); 10060 __put_user(st.st_blksize, &target_st->st_blksize); 10061 __put_user(st.st_blocks, &target_st->st_blocks); 10062 __put_user(st.st_atime, &target_st->target_st_atime); 10063 __put_user(st.st_mtime, &target_st->target_st_mtime); 10064 __put_user(st.st_ctime, &target_st->target_st_ctime); 10065 #if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \ 10066 defined(TARGET_STAT_HAVE_NSEC) 10067 __put_user(st.st_atim.tv_nsec, 10068 &target_st->target_st_atime_nsec); 10069 __put_user(st.st_mtim.tv_nsec, 10070 &target_st->target_st_mtime_nsec); 10071 __put_user(st.st_ctim.tv_nsec, 10072 &target_st->target_st_ctime_nsec); 10073 #endif 10074 unlock_user_struct(target_st, arg2, 1); 10075 } 10076 } 10077 return ret; 10078 #endif 10079 case TARGET_NR_vhangup: 10080 return get_errno(vhangup()); 10081 #ifdef TARGET_NR_syscall 10082 case TARGET_NR_syscall: 10083 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10084 arg6, arg7, arg8, 0); 10085 #endif 10086 #if defined(TARGET_NR_wait4) 10087 case TARGET_NR_wait4: 10088 { 10089 int status; 10090 abi_long status_ptr = arg2; 10091 struct rusage rusage, *rusage_ptr; 10092 abi_ulong target_rusage = arg4; 10093 abi_long rusage_err; 10094 if (target_rusage) 10095 rusage_ptr = &rusage; 10096 else 10097 rusage_ptr = NULL; 10098 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10099 if (!is_error(ret)) { 10100 if (status_ptr && ret) { 10101 status = host_to_target_waitstatus(status); 10102 if (put_user_s32(status, status_ptr)) 10103 return -TARGET_EFAULT; 10104 } 10105 if (target_rusage) { 10106 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10107 if (rusage_err) { 10108 ret = rusage_err; 10109 } 10110 } 10111 } 10112 } 10113 return ret; 10114 #endif 10115 #ifdef TARGET_NR_swapoff 10116 case TARGET_NR_swapoff: 10117 if (!(p = lock_user_string(arg1))) 10118 return -TARGET_EFAULT; 10119 ret = get_errno(swapoff(p)); 10120 unlock_user(p, arg1, 0); 10121 return ret; 10122 #endif 10123 case TARGET_NR_sysinfo: 10124 { 10125 struct target_sysinfo *target_value; 10126 struct sysinfo value; 10127 ret = get_errno(sysinfo(&value)); 10128 if (!is_error(ret) && arg1) 10129 { 10130 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10131 return -TARGET_EFAULT; 10132 __put_user(value.uptime, &target_value->uptime); 10133 __put_user(value.loads[0], &target_value->loads[0]); 10134 __put_user(value.loads[1], &target_value->loads[1]); 10135 __put_user(value.loads[2], &target_value->loads[2]); 10136 __put_user(value.totalram, &target_value->totalram); 10137 __put_user(value.freeram, &target_value->freeram); 10138 __put_user(value.sharedram, &target_value->sharedram); 10139 __put_user(value.bufferram, &target_value->bufferram); 10140 __put_user(value.totalswap, &target_value->totalswap); 10141 __put_user(value.freeswap, &target_value->freeswap); 10142 __put_user(value.procs, &target_value->procs); 10143 __put_user(value.totalhigh, &target_value->totalhigh); 10144 __put_user(value.freehigh, &target_value->freehigh); 10145 __put_user(value.mem_unit, &target_value->mem_unit); 10146 unlock_user_struct(target_value, arg1, 1); 10147 } 10148 } 10149 return ret; 10150 #ifdef TARGET_NR_ipc 10151 case TARGET_NR_ipc: 10152 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10153 #endif 10154 #ifdef TARGET_NR_semget 10155 case TARGET_NR_semget: 10156 return get_errno(semget(arg1, arg2, arg3)); 10157 #endif 10158 #ifdef TARGET_NR_semop 10159 case TARGET_NR_semop: 10160 return do_semtimedop(arg1, arg2, arg3, 0, false); 10161 #endif 10162 #ifdef TARGET_NR_semtimedop 10163 case TARGET_NR_semtimedop: 10164 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10165 #endif 10166 #ifdef TARGET_NR_semtimedop_time64 10167 case TARGET_NR_semtimedop_time64: 10168 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10169 #endif 10170 #ifdef TARGET_NR_semctl 10171 case TARGET_NR_semctl: 10172 return do_semctl(arg1, arg2, arg3, arg4); 10173 #endif 10174 #ifdef TARGET_NR_msgctl 10175 case TARGET_NR_msgctl: 10176 return do_msgctl(arg1, arg2, arg3); 10177 #endif 10178 #ifdef TARGET_NR_msgget 10179 case TARGET_NR_msgget: 10180 return get_errno(msgget(arg1, arg2)); 10181 #endif 10182 #ifdef TARGET_NR_msgrcv 10183 case TARGET_NR_msgrcv: 10184 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10185 #endif 10186 #ifdef TARGET_NR_msgsnd 10187 case TARGET_NR_msgsnd: 10188 return do_msgsnd(arg1, arg2, arg3, arg4); 10189 #endif 10190 #ifdef TARGET_NR_shmget 10191 case TARGET_NR_shmget: 10192 return get_errno(shmget(arg1, arg2, arg3)); 10193 #endif 10194 #ifdef TARGET_NR_shmctl 10195 case TARGET_NR_shmctl: 10196 return do_shmctl(arg1, arg2, arg3); 10197 #endif 10198 #ifdef TARGET_NR_shmat 10199 case TARGET_NR_shmat: 10200 return do_shmat(cpu_env, arg1, arg2, arg3); 10201 #endif 10202 #ifdef TARGET_NR_shmdt 10203 case TARGET_NR_shmdt: 10204 return do_shmdt(arg1); 10205 #endif 10206 case TARGET_NR_fsync: 10207 return get_errno(fsync(arg1)); 10208 case TARGET_NR_clone: 10209 /* Linux manages to have three different orderings for its 10210 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 10211 * match the kernel's CONFIG_CLONE_* settings. 10212 * Microblaze is further special in that it uses a sixth 10213 * implicit argument to clone for the TLS pointer. 10214 */ 10215 #if defined(TARGET_MICROBLAZE) 10216 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 10217 #elif defined(TARGET_CLONE_BACKWARDS) 10218 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 10219 #elif defined(TARGET_CLONE_BACKWARDS2) 10220 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 10221 #else 10222 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 10223 #endif 10224 return ret; 10225 #ifdef __NR_exit_group 10226 /* new thread calls */ 10227 case TARGET_NR_exit_group: 10228 preexit_cleanup(cpu_env, arg1); 10229 return get_errno(exit_group(arg1)); 10230 #endif 10231 case TARGET_NR_setdomainname: 10232 if (!(p = lock_user_string(arg1))) 10233 return -TARGET_EFAULT; 10234 ret = get_errno(setdomainname(p, arg2)); 10235 unlock_user(p, arg1, 0); 10236 return ret; 10237 case TARGET_NR_uname: 10238 /* no need to transcode because we use the linux syscall */ 10239 { 10240 struct new_utsname * buf; 10241 10242 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 10243 return -TARGET_EFAULT; 10244 ret = get_errno(sys_uname(buf)); 10245 if (!is_error(ret)) { 10246 /* Overwrite the native machine name with whatever is being 10247 emulated. */ 10248 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 10249 sizeof(buf->machine)); 10250 /* Allow the user to override the reported release. */ 10251 if (qemu_uname_release && *qemu_uname_release) { 10252 g_strlcpy(buf->release, qemu_uname_release, 10253 sizeof(buf->release)); 10254 } 10255 } 10256 unlock_user_struct(buf, arg1, 1); 10257 } 10258 return ret; 10259 #ifdef TARGET_I386 10260 case TARGET_NR_modify_ldt: 10261 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 10262 #if !defined(TARGET_X86_64) 10263 case TARGET_NR_vm86: 10264 return do_vm86(cpu_env, arg1, arg2); 10265 #endif 10266 #endif 10267 #if defined(TARGET_NR_adjtimex) 10268 case TARGET_NR_adjtimex: 10269 { 10270 struct timex host_buf; 10271 10272 if (target_to_host_timex(&host_buf, arg1) != 0) { 10273 return -TARGET_EFAULT; 10274 } 10275 ret = get_errno(adjtimex(&host_buf)); 10276 if (!is_error(ret)) { 10277 if (host_to_target_timex(arg1, &host_buf) != 0) { 10278 return -TARGET_EFAULT; 10279 } 10280 } 10281 } 10282 return ret; 10283 #endif 10284 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 10285 case TARGET_NR_clock_adjtime: 10286 { 10287 struct timex htx, *phtx = &htx; 10288 10289 if (target_to_host_timex(phtx, arg2) != 0) { 10290 return -TARGET_EFAULT; 10291 } 10292 ret = get_errno(clock_adjtime(arg1, phtx)); 10293 if (!is_error(ret) && phtx) { 10294 if (host_to_target_timex(arg2, phtx) != 0) { 10295 return -TARGET_EFAULT; 10296 } 10297 } 10298 } 10299 return ret; 10300 #endif 10301 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 10302 case TARGET_NR_clock_adjtime64: 10303 { 10304 struct timex htx; 10305 10306 if (target_to_host_timex64(&htx, arg2) != 0) { 10307 return -TARGET_EFAULT; 10308 } 10309 ret = get_errno(clock_adjtime(arg1, &htx)); 10310 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 10311 return -TARGET_EFAULT; 10312 } 10313 } 10314 return ret; 10315 #endif 10316 case TARGET_NR_getpgid: 10317 return get_errno(getpgid(arg1)); 10318 case TARGET_NR_fchdir: 10319 return get_errno(fchdir(arg1)); 10320 case TARGET_NR_personality: 10321 return get_errno(personality(arg1)); 10322 #ifdef TARGET_NR__llseek /* Not on alpha */ 10323 case TARGET_NR__llseek: 10324 { 10325 int64_t res; 10326 #if !defined(__NR_llseek) 10327 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 10328 if (res == -1) { 10329 ret = get_errno(res); 10330 } else { 10331 ret = 0; 10332 } 10333 #else 10334 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 10335 #endif 10336 if ((ret == 0) && put_user_s64(res, arg4)) { 10337 return -TARGET_EFAULT; 10338 } 10339 } 10340 return ret; 10341 #endif 10342 #ifdef TARGET_NR_getdents 10343 case TARGET_NR_getdents: 10344 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 10345 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 10346 { 10347 struct target_dirent *target_dirp; 10348 struct linux_dirent *dirp; 10349 abi_long count = arg3; 10350 10351 dirp = g_try_malloc(count); 10352 if (!dirp) { 10353 return -TARGET_ENOMEM; 10354 } 10355 10356 ret = get_errno(sys_getdents(arg1, dirp, count)); 10357 if (!is_error(ret)) { 10358 struct linux_dirent *de; 10359 struct target_dirent *tde; 10360 int len = ret; 10361 int reclen, treclen; 10362 int count1, tnamelen; 10363 10364 count1 = 0; 10365 de = dirp; 10366 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10367 return -TARGET_EFAULT; 10368 tde = target_dirp; 10369 while (len > 0) { 10370 reclen = de->d_reclen; 10371 tnamelen = reclen - offsetof(struct linux_dirent, d_name); 10372 assert(tnamelen >= 0); 10373 treclen = tnamelen + offsetof(struct target_dirent, d_name); 10374 assert(count1 + treclen <= count); 10375 tde->d_reclen = tswap16(treclen); 10376 tde->d_ino = tswapal(de->d_ino); 10377 tde->d_off = tswapal(de->d_off); 10378 memcpy(tde->d_name, de->d_name, tnamelen); 10379 de = (struct linux_dirent *)((char *)de + reclen); 10380 len -= reclen; 10381 tde = (struct target_dirent *)((char *)tde + treclen); 10382 count1 += treclen; 10383 } 10384 ret = count1; 10385 unlock_user(target_dirp, arg2, ret); 10386 } 10387 g_free(dirp); 10388 } 10389 #else 10390 { 10391 struct linux_dirent *dirp; 10392 abi_long count = arg3; 10393 10394 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10395 return -TARGET_EFAULT; 10396 ret = get_errno(sys_getdents(arg1, dirp, count)); 10397 if (!is_error(ret)) { 10398 struct linux_dirent *de; 10399 int len = ret; 10400 int reclen; 10401 de = dirp; 10402 while (len > 0) { 10403 reclen = de->d_reclen; 10404 if (reclen > len) 10405 break; 10406 de->d_reclen = tswap16(reclen); 10407 tswapls(&de->d_ino); 10408 tswapls(&de->d_off); 10409 de = (struct linux_dirent *)((char *)de + reclen); 10410 len -= reclen; 10411 } 10412 } 10413 unlock_user(dirp, arg2, ret); 10414 } 10415 #endif 10416 #else 10417 /* Implement getdents in terms of getdents64 */ 10418 { 10419 struct linux_dirent64 *dirp; 10420 abi_long count = arg3; 10421 10422 dirp = lock_user(VERIFY_WRITE, arg2, count, 0); 10423 if (!dirp) { 10424 return -TARGET_EFAULT; 10425 } 10426 ret = get_errno(sys_getdents64(arg1, dirp, count)); 10427 if (!is_error(ret)) { 10428 /* Convert the dirent64 structs to target dirent. We do this 10429 * in-place, since we can guarantee that a target_dirent is no 10430 * larger than a dirent64; however this means we have to be 10431 * careful to read everything before writing in the new format. 10432 */ 10433 struct linux_dirent64 *de; 10434 struct target_dirent *tde; 10435 int len = ret; 10436 int tlen = 0; 10437 10438 de = dirp; 10439 tde = (struct target_dirent *)dirp; 10440 while (len > 0) { 10441 int namelen, treclen; 10442 int reclen = de->d_reclen; 10443 uint64_t ino = de->d_ino; 10444 int64_t off = de->d_off; 10445 uint8_t type = de->d_type; 10446 10447 namelen = strlen(de->d_name); 10448 treclen = offsetof(struct target_dirent, d_name) 10449 + namelen + 2; 10450 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long)); 10451 10452 memmove(tde->d_name, de->d_name, namelen + 1); 10453 tde->d_ino = tswapal(ino); 10454 tde->d_off = tswapal(off); 10455 tde->d_reclen = tswap16(treclen); 10456 /* The target_dirent type is in what was formerly a padding 10457 * byte at the end of the structure: 10458 */ 10459 *(((char *)tde) + treclen - 1) = type; 10460 10461 de = (struct linux_dirent64 *)((char *)de + reclen); 10462 tde = (struct target_dirent *)((char *)tde + treclen); 10463 len -= reclen; 10464 tlen += treclen; 10465 } 10466 ret = tlen; 10467 } 10468 unlock_user(dirp, arg2, ret); 10469 } 10470 #endif 10471 return ret; 10472 #endif /* TARGET_NR_getdents */ 10473 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10474 case TARGET_NR_getdents64: 10475 { 10476 struct linux_dirent64 *dirp; 10477 abi_long count = arg3; 10478 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10479 return -TARGET_EFAULT; 10480 ret = get_errno(sys_getdents64(arg1, dirp, count)); 10481 if (!is_error(ret)) { 10482 struct linux_dirent64 *de; 10483 int len = ret; 10484 int reclen; 10485 de = dirp; 10486 while (len > 0) { 10487 reclen = de->d_reclen; 10488 if (reclen > len) 10489 break; 10490 de->d_reclen = tswap16(reclen); 10491 tswap64s((uint64_t *)&de->d_ino); 10492 tswap64s((uint64_t *)&de->d_off); 10493 de = (struct linux_dirent64 *)((char *)de + reclen); 10494 len -= reclen; 10495 } 10496 } 10497 unlock_user(dirp, arg2, ret); 10498 } 10499 return ret; 10500 #endif /* TARGET_NR_getdents64 */ 10501 #if defined(TARGET_NR__newselect) 10502 case TARGET_NR__newselect: 10503 return do_select(arg1, arg2, arg3, arg4, arg5); 10504 #endif 10505 #ifdef TARGET_NR_poll 10506 case TARGET_NR_poll: 10507 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 10508 #endif 10509 #ifdef TARGET_NR_ppoll 10510 case TARGET_NR_ppoll: 10511 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 10512 #endif 10513 #ifdef TARGET_NR_ppoll_time64 10514 case TARGET_NR_ppoll_time64: 10515 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 10516 #endif 10517 case TARGET_NR_flock: 10518 /* NOTE: the flock constant seems to be the same for every 10519 Linux platform */ 10520 return get_errno(safe_flock(arg1, arg2)); 10521 case TARGET_NR_readv: 10522 { 10523 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10524 if (vec != NULL) { 10525 ret = get_errno(safe_readv(arg1, vec, arg3)); 10526 unlock_iovec(vec, arg2, arg3, 1); 10527 } else { 10528 ret = -host_to_target_errno(errno); 10529 } 10530 } 10531 return ret; 10532 case TARGET_NR_writev: 10533 { 10534 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10535 if (vec != NULL) { 10536 ret = get_errno(safe_writev(arg1, vec, arg3)); 10537 unlock_iovec(vec, arg2, arg3, 0); 10538 } else { 10539 ret = -host_to_target_errno(errno); 10540 } 10541 } 10542 return ret; 10543 #if defined(TARGET_NR_preadv) 10544 case TARGET_NR_preadv: 10545 { 10546 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10547 if (vec != NULL) { 10548 unsigned long low, high; 10549 10550 target_to_host_low_high(arg4, arg5, &low, &high); 10551 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10552 unlock_iovec(vec, arg2, arg3, 1); 10553 } else { 10554 ret = -host_to_target_errno(errno); 10555 } 10556 } 10557 return ret; 10558 #endif 10559 #if defined(TARGET_NR_pwritev) 10560 case TARGET_NR_pwritev: 10561 { 10562 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10563 if (vec != NULL) { 10564 unsigned long low, high; 10565 10566 target_to_host_low_high(arg4, arg5, &low, &high); 10567 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10568 unlock_iovec(vec, arg2, arg3, 0); 10569 } else { 10570 ret = -host_to_target_errno(errno); 10571 } 10572 } 10573 return ret; 10574 #endif 10575 case TARGET_NR_getsid: 10576 return get_errno(getsid(arg1)); 10577 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10578 case TARGET_NR_fdatasync: 10579 return get_errno(fdatasync(arg1)); 10580 #endif 10581 case TARGET_NR_sched_getaffinity: 10582 { 10583 unsigned int mask_size; 10584 unsigned long *mask; 10585 10586 /* 10587 * sched_getaffinity needs multiples of ulong, so need to take 10588 * care of mismatches between target ulong and host ulong sizes. 10589 */ 10590 if (arg2 & (sizeof(abi_ulong) - 1)) { 10591 return -TARGET_EINVAL; 10592 } 10593 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10594 10595 mask = alloca(mask_size); 10596 memset(mask, 0, mask_size); 10597 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10598 10599 if (!is_error(ret)) { 10600 if (ret > arg2) { 10601 /* More data returned than the caller's buffer will fit. 10602 * This only happens if sizeof(abi_long) < sizeof(long) 10603 * and the caller passed us a buffer holding an odd number 10604 * of abi_longs. If the host kernel is actually using the 10605 * extra 4 bytes then fail EINVAL; otherwise we can just 10606 * ignore them and only copy the interesting part. 10607 */ 10608 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10609 if (numcpus > arg2 * 8) { 10610 return -TARGET_EINVAL; 10611 } 10612 ret = arg2; 10613 } 10614 10615 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10616 return -TARGET_EFAULT; 10617 } 10618 } 10619 } 10620 return ret; 10621 case TARGET_NR_sched_setaffinity: 10622 { 10623 unsigned int mask_size; 10624 unsigned long *mask; 10625 10626 /* 10627 * sched_setaffinity needs multiples of ulong, so need to take 10628 * care of mismatches between target ulong and host ulong sizes. 10629 */ 10630 if (arg2 & (sizeof(abi_ulong) - 1)) { 10631 return -TARGET_EINVAL; 10632 } 10633 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10634 mask = alloca(mask_size); 10635 10636 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10637 if (ret) { 10638 return ret; 10639 } 10640 10641 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10642 } 10643 case TARGET_NR_getcpu: 10644 { 10645 unsigned cpu, node; 10646 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10647 arg2 ? &node : NULL, 10648 NULL)); 10649 if (is_error(ret)) { 10650 return ret; 10651 } 10652 if (arg1 && put_user_u32(cpu, arg1)) { 10653 return -TARGET_EFAULT; 10654 } 10655 if (arg2 && put_user_u32(node, arg2)) { 10656 return -TARGET_EFAULT; 10657 } 10658 } 10659 return ret; 10660 case TARGET_NR_sched_setparam: 10661 { 10662 struct sched_param *target_schp; 10663 struct sched_param schp; 10664 10665 if (arg2 == 0) { 10666 return -TARGET_EINVAL; 10667 } 10668 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) 10669 return -TARGET_EFAULT; 10670 schp.sched_priority = tswap32(target_schp->sched_priority); 10671 unlock_user_struct(target_schp, arg2, 0); 10672 return get_errno(sched_setparam(arg1, &schp)); 10673 } 10674 case TARGET_NR_sched_getparam: 10675 { 10676 struct sched_param *target_schp; 10677 struct sched_param schp; 10678 10679 if (arg2 == 0) { 10680 return -TARGET_EINVAL; 10681 } 10682 ret = get_errno(sched_getparam(arg1, &schp)); 10683 if (!is_error(ret)) { 10684 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) 10685 return -TARGET_EFAULT; 10686 target_schp->sched_priority = tswap32(schp.sched_priority); 10687 unlock_user_struct(target_schp, arg2, 1); 10688 } 10689 } 10690 return ret; 10691 case TARGET_NR_sched_setscheduler: 10692 { 10693 struct sched_param *target_schp; 10694 struct sched_param schp; 10695 if (arg3 == 0) { 10696 return -TARGET_EINVAL; 10697 } 10698 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) 10699 return -TARGET_EFAULT; 10700 schp.sched_priority = tswap32(target_schp->sched_priority); 10701 unlock_user_struct(target_schp, arg3, 0); 10702 return get_errno(sched_setscheduler(arg1, arg2, &schp)); 10703 } 10704 case TARGET_NR_sched_getscheduler: 10705 return get_errno(sched_getscheduler(arg1)); 10706 case TARGET_NR_sched_yield: 10707 return get_errno(sched_yield()); 10708 case TARGET_NR_sched_get_priority_max: 10709 return get_errno(sched_get_priority_max(arg1)); 10710 case TARGET_NR_sched_get_priority_min: 10711 return get_errno(sched_get_priority_min(arg1)); 10712 #ifdef TARGET_NR_sched_rr_get_interval 10713 case TARGET_NR_sched_rr_get_interval: 10714 { 10715 struct timespec ts; 10716 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10717 if (!is_error(ret)) { 10718 ret = host_to_target_timespec(arg2, &ts); 10719 } 10720 } 10721 return ret; 10722 #endif 10723 #ifdef TARGET_NR_sched_rr_get_interval_time64 10724 case TARGET_NR_sched_rr_get_interval_time64: 10725 { 10726 struct timespec ts; 10727 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10728 if (!is_error(ret)) { 10729 ret = host_to_target_timespec64(arg2, &ts); 10730 } 10731 } 10732 return ret; 10733 #endif 10734 #if defined(TARGET_NR_nanosleep) 10735 case TARGET_NR_nanosleep: 10736 { 10737 struct timespec req, rem; 10738 target_to_host_timespec(&req, arg1); 10739 ret = get_errno(safe_nanosleep(&req, &rem)); 10740 if (is_error(ret) && arg2) { 10741 host_to_target_timespec(arg2, &rem); 10742 } 10743 } 10744 return ret; 10745 #endif 10746 case TARGET_NR_prctl: 10747 switch (arg1) { 10748 case PR_GET_PDEATHSIG: 10749 { 10750 int deathsig; 10751 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5)); 10752 if (!is_error(ret) && arg2 10753 && put_user_s32(deathsig, arg2)) { 10754 return -TARGET_EFAULT; 10755 } 10756 return ret; 10757 } 10758 #ifdef PR_GET_NAME 10759 case PR_GET_NAME: 10760 { 10761 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 10762 if (!name) { 10763 return -TARGET_EFAULT; 10764 } 10765 ret = get_errno(prctl(arg1, (unsigned long)name, 10766 arg3, arg4, arg5)); 10767 unlock_user(name, arg2, 16); 10768 return ret; 10769 } 10770 case PR_SET_NAME: 10771 { 10772 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 10773 if (!name) { 10774 return -TARGET_EFAULT; 10775 } 10776 ret = get_errno(prctl(arg1, (unsigned long)name, 10777 arg3, arg4, arg5)); 10778 unlock_user(name, arg2, 0); 10779 return ret; 10780 } 10781 #endif 10782 #ifdef TARGET_MIPS 10783 case TARGET_PR_GET_FP_MODE: 10784 { 10785 CPUMIPSState *env = ((CPUMIPSState *)cpu_env); 10786 ret = 0; 10787 if (env->CP0_Status & (1 << CP0St_FR)) { 10788 ret |= TARGET_PR_FP_MODE_FR; 10789 } 10790 if (env->CP0_Config5 & (1 << CP0C5_FRE)) { 10791 ret |= TARGET_PR_FP_MODE_FRE; 10792 } 10793 return ret; 10794 } 10795 case TARGET_PR_SET_FP_MODE: 10796 { 10797 CPUMIPSState *env = ((CPUMIPSState *)cpu_env); 10798 bool old_fr = env->CP0_Status & (1 << CP0St_FR); 10799 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE); 10800 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR; 10801 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE; 10802 10803 const unsigned int known_bits = TARGET_PR_FP_MODE_FR | 10804 TARGET_PR_FP_MODE_FRE; 10805 10806 /* If nothing to change, return right away, successfully. */ 10807 if (old_fr == new_fr && old_fre == new_fre) { 10808 return 0; 10809 } 10810 /* Check the value is valid */ 10811 if (arg2 & ~known_bits) { 10812 return -TARGET_EOPNOTSUPP; 10813 } 10814 /* Setting FRE without FR is not supported. */ 10815 if (new_fre && !new_fr) { 10816 return -TARGET_EOPNOTSUPP; 10817 } 10818 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) { 10819 /* FR1 is not supported */ 10820 return -TARGET_EOPNOTSUPP; 10821 } 10822 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64)) 10823 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) { 10824 /* cannot set FR=0 */ 10825 return -TARGET_EOPNOTSUPP; 10826 } 10827 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) { 10828 /* Cannot set FRE=1 */ 10829 return -TARGET_EOPNOTSUPP; 10830 } 10831 10832 int i; 10833 fpr_t *fpr = env->active_fpu.fpr; 10834 for (i = 0; i < 32 ; i += 2) { 10835 if (!old_fr && new_fr) { 10836 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX]; 10837 } else if (old_fr && !new_fr) { 10838 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX]; 10839 } 10840 } 10841 10842 if (new_fr) { 10843 env->CP0_Status |= (1 << CP0St_FR); 10844 env->hflags |= MIPS_HFLAG_F64; 10845 } else { 10846 env->CP0_Status &= ~(1 << CP0St_FR); 10847 env->hflags &= ~MIPS_HFLAG_F64; 10848 } 10849 if (new_fre) { 10850 env->CP0_Config5 |= (1 << CP0C5_FRE); 10851 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) { 10852 env->hflags |= MIPS_HFLAG_FRE; 10853 } 10854 } else { 10855 env->CP0_Config5 &= ~(1 << CP0C5_FRE); 10856 env->hflags &= ~MIPS_HFLAG_FRE; 10857 } 10858 10859 return 0; 10860 } 10861 #endif /* MIPS */ 10862 #ifdef TARGET_AARCH64 10863 case TARGET_PR_SVE_SET_VL: 10864 /* 10865 * We cannot support either PR_SVE_SET_VL_ONEXEC or 10866 * PR_SVE_VL_INHERIT. Note the kernel definition 10867 * of sve_vl_valid allows for VQ=512, i.e. VL=8192, 10868 * even though the current architectural maximum is VQ=16. 10869 */ 10870 ret = -TARGET_EINVAL; 10871 if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env)) 10872 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) { 10873 CPUARMState *env = cpu_env; 10874 ARMCPU *cpu = env_archcpu(env); 10875 uint32_t vq, old_vq; 10876 10877 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1; 10878 vq = MAX(arg2 / 16, 1); 10879 vq = MIN(vq, cpu->sve_max_vq); 10880 10881 if (vq < old_vq) { 10882 aarch64_sve_narrow_vq(env, vq); 10883 } 10884 env->vfp.zcr_el[1] = vq - 1; 10885 arm_rebuild_hflags(env); 10886 ret = vq * 16; 10887 } 10888 return ret; 10889 case TARGET_PR_SVE_GET_VL: 10890 ret = -TARGET_EINVAL; 10891 { 10892 ARMCPU *cpu = env_archcpu(cpu_env); 10893 if (cpu_isar_feature(aa64_sve, cpu)) { 10894 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16; 10895 } 10896 } 10897 return ret; 10898 case TARGET_PR_PAC_RESET_KEYS: 10899 { 10900 CPUARMState *env = cpu_env; 10901 ARMCPU *cpu = env_archcpu(env); 10902 10903 if (arg3 || arg4 || arg5) { 10904 return -TARGET_EINVAL; 10905 } 10906 if (cpu_isar_feature(aa64_pauth, cpu)) { 10907 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY | 10908 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY | 10909 TARGET_PR_PAC_APGAKEY); 10910 int ret = 0; 10911 Error *err = NULL; 10912 10913 if (arg2 == 0) { 10914 arg2 = all; 10915 } else if (arg2 & ~all) { 10916 return -TARGET_EINVAL; 10917 } 10918 if (arg2 & TARGET_PR_PAC_APIAKEY) { 10919 ret |= qemu_guest_getrandom(&env->keys.apia, 10920 sizeof(ARMPACKey), &err); 10921 } 10922 if (arg2 & TARGET_PR_PAC_APIBKEY) { 10923 ret |= qemu_guest_getrandom(&env->keys.apib, 10924 sizeof(ARMPACKey), &err); 10925 } 10926 if (arg2 & TARGET_PR_PAC_APDAKEY) { 10927 ret |= qemu_guest_getrandom(&env->keys.apda, 10928 sizeof(ARMPACKey), &err); 10929 } 10930 if (arg2 & TARGET_PR_PAC_APDBKEY) { 10931 ret |= qemu_guest_getrandom(&env->keys.apdb, 10932 sizeof(ARMPACKey), &err); 10933 } 10934 if (arg2 & TARGET_PR_PAC_APGAKEY) { 10935 ret |= qemu_guest_getrandom(&env->keys.apga, 10936 sizeof(ARMPACKey), &err); 10937 } 10938 if (ret != 0) { 10939 /* 10940 * Some unknown failure in the crypto. The best 10941 * we can do is log it and fail the syscall. 10942 * The real syscall cannot fail this way. 10943 */ 10944 qemu_log_mask(LOG_UNIMP, 10945 "PR_PAC_RESET_KEYS: Crypto failure: %s", 10946 error_get_pretty(err)); 10947 error_free(err); 10948 return -TARGET_EIO; 10949 } 10950 return 0; 10951 } 10952 } 10953 return -TARGET_EINVAL; 10954 case TARGET_PR_SET_TAGGED_ADDR_CTRL: 10955 { 10956 abi_ulong valid_mask = TARGET_PR_TAGGED_ADDR_ENABLE; 10957 CPUARMState *env = cpu_env; 10958 ARMCPU *cpu = env_archcpu(env); 10959 10960 if (cpu_isar_feature(aa64_mte, cpu)) { 10961 valid_mask |= TARGET_PR_MTE_TCF_MASK; 10962 valid_mask |= TARGET_PR_MTE_TAG_MASK; 10963 } 10964 10965 if ((arg2 & ~valid_mask) || arg3 || arg4 || arg5) { 10966 return -TARGET_EINVAL; 10967 } 10968 env->tagged_addr_enable = arg2 & TARGET_PR_TAGGED_ADDR_ENABLE; 10969 10970 if (cpu_isar_feature(aa64_mte, cpu)) { 10971 switch (arg2 & TARGET_PR_MTE_TCF_MASK) { 10972 case TARGET_PR_MTE_TCF_NONE: 10973 case TARGET_PR_MTE_TCF_SYNC: 10974 case TARGET_PR_MTE_TCF_ASYNC: 10975 break; 10976 default: 10977 return -EINVAL; 10978 } 10979 10980 /* 10981 * Write PR_MTE_TCF to SCTLR_EL1[TCF0]. 10982 * Note that the syscall values are consistent with hw. 10983 */ 10984 env->cp15.sctlr_el[1] = 10985 deposit64(env->cp15.sctlr_el[1], 38, 2, 10986 arg2 >> TARGET_PR_MTE_TCF_SHIFT); 10987 10988 /* 10989 * Write PR_MTE_TAG to GCR_EL1[Exclude]. 10990 * Note that the syscall uses an include mask, 10991 * and hardware uses an exclude mask -- invert. 10992 */ 10993 env->cp15.gcr_el1 = 10994 deposit64(env->cp15.gcr_el1, 0, 16, 10995 ~arg2 >> TARGET_PR_MTE_TAG_SHIFT); 10996 arm_rebuild_hflags(env); 10997 } 10998 return 0; 10999 } 11000 case TARGET_PR_GET_TAGGED_ADDR_CTRL: 11001 { 11002 abi_long ret = 0; 11003 CPUARMState *env = cpu_env; 11004 ARMCPU *cpu = env_archcpu(env); 11005 11006 if (arg2 || arg3 || arg4 || arg5) { 11007 return -TARGET_EINVAL; 11008 } 11009 if (env->tagged_addr_enable) { 11010 ret |= TARGET_PR_TAGGED_ADDR_ENABLE; 11011 } 11012 if (cpu_isar_feature(aa64_mte, cpu)) { 11013 /* See above. */ 11014 ret |= (extract64(env->cp15.sctlr_el[1], 38, 2) 11015 << TARGET_PR_MTE_TCF_SHIFT); 11016 ret = deposit64(ret, TARGET_PR_MTE_TAG_SHIFT, 16, 11017 ~env->cp15.gcr_el1); 11018 } 11019 return ret; 11020 } 11021 #endif /* AARCH64 */ 11022 case PR_GET_SECCOMP: 11023 case PR_SET_SECCOMP: 11024 /* Disable seccomp to prevent the target disabling syscalls we 11025 * need. */ 11026 return -TARGET_EINVAL; 11027 default: 11028 /* Most prctl options have no pointer arguments */ 11029 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5)); 11030 } 11031 break; 11032 #ifdef TARGET_NR_arch_prctl 11033 case TARGET_NR_arch_prctl: 11034 return do_arch_prctl(cpu_env, arg1, arg2); 11035 #endif 11036 #ifdef TARGET_NR_pread64 11037 case TARGET_NR_pread64: 11038 if (regpairs_aligned(cpu_env, num)) { 11039 arg4 = arg5; 11040 arg5 = arg6; 11041 } 11042 if (arg2 == 0 && arg3 == 0) { 11043 /* Special-case NULL buffer and zero length, which should succeed */ 11044 p = 0; 11045 } else { 11046 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11047 if (!p) { 11048 return -TARGET_EFAULT; 11049 } 11050 } 11051 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 11052 unlock_user(p, arg2, ret); 11053 return ret; 11054 case TARGET_NR_pwrite64: 11055 if (regpairs_aligned(cpu_env, num)) { 11056 arg4 = arg5; 11057 arg5 = arg6; 11058 } 11059 if (arg2 == 0 && arg3 == 0) { 11060 /* Special-case NULL buffer and zero length, which should succeed */ 11061 p = 0; 11062 } else { 11063 p = lock_user(VERIFY_READ, arg2, arg3, 1); 11064 if (!p) { 11065 return -TARGET_EFAULT; 11066 } 11067 } 11068 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 11069 unlock_user(p, arg2, 0); 11070 return ret; 11071 #endif 11072 case TARGET_NR_getcwd: 11073 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 11074 return -TARGET_EFAULT; 11075 ret = get_errno(sys_getcwd1(p, arg2)); 11076 unlock_user(p, arg1, ret); 11077 return ret; 11078 case TARGET_NR_capget: 11079 case TARGET_NR_capset: 11080 { 11081 struct target_user_cap_header *target_header; 11082 struct target_user_cap_data *target_data = NULL; 11083 struct __user_cap_header_struct header; 11084 struct __user_cap_data_struct data[2]; 11085 struct __user_cap_data_struct *dataptr = NULL; 11086 int i, target_datalen; 11087 int data_items = 1; 11088 11089 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 11090 return -TARGET_EFAULT; 11091 } 11092 header.version = tswap32(target_header->version); 11093 header.pid = tswap32(target_header->pid); 11094 11095 if (header.version != _LINUX_CAPABILITY_VERSION) { 11096 /* Version 2 and up takes pointer to two user_data structs */ 11097 data_items = 2; 11098 } 11099 11100 target_datalen = sizeof(*target_data) * data_items; 11101 11102 if (arg2) { 11103 if (num == TARGET_NR_capget) { 11104 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 11105 } else { 11106 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 11107 } 11108 if (!target_data) { 11109 unlock_user_struct(target_header, arg1, 0); 11110 return -TARGET_EFAULT; 11111 } 11112 11113 if (num == TARGET_NR_capset) { 11114 for (i = 0; i < data_items; i++) { 11115 data[i].effective = tswap32(target_data[i].effective); 11116 data[i].permitted = tswap32(target_data[i].permitted); 11117 data[i].inheritable = tswap32(target_data[i].inheritable); 11118 } 11119 } 11120 11121 dataptr = data; 11122 } 11123 11124 if (num == TARGET_NR_capget) { 11125 ret = get_errno(capget(&header, dataptr)); 11126 } else { 11127 ret = get_errno(capset(&header, dataptr)); 11128 } 11129 11130 /* The kernel always updates version for both capget and capset */ 11131 target_header->version = tswap32(header.version); 11132 unlock_user_struct(target_header, arg1, 1); 11133 11134 if (arg2) { 11135 if (num == TARGET_NR_capget) { 11136 for (i = 0; i < data_items; i++) { 11137 target_data[i].effective = tswap32(data[i].effective); 11138 target_data[i].permitted = tswap32(data[i].permitted); 11139 target_data[i].inheritable = tswap32(data[i].inheritable); 11140 } 11141 unlock_user(target_data, arg2, target_datalen); 11142 } else { 11143 unlock_user(target_data, arg2, 0); 11144 } 11145 } 11146 return ret; 11147 } 11148 case TARGET_NR_sigaltstack: 11149 return do_sigaltstack(arg1, arg2, cpu_env); 11150 11151 #ifdef CONFIG_SENDFILE 11152 #ifdef TARGET_NR_sendfile 11153 case TARGET_NR_sendfile: 11154 { 11155 off_t *offp = NULL; 11156 off_t off; 11157 if (arg3) { 11158 ret = get_user_sal(off, arg3); 11159 if (is_error(ret)) { 11160 return ret; 11161 } 11162 offp = &off; 11163 } 11164 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11165 if (!is_error(ret) && arg3) { 11166 abi_long ret2 = put_user_sal(off, arg3); 11167 if (is_error(ret2)) { 11168 ret = ret2; 11169 } 11170 } 11171 return ret; 11172 } 11173 #endif 11174 #ifdef TARGET_NR_sendfile64 11175 case TARGET_NR_sendfile64: 11176 { 11177 off_t *offp = NULL; 11178 off_t off; 11179 if (arg3) { 11180 ret = get_user_s64(off, arg3); 11181 if (is_error(ret)) { 11182 return ret; 11183 } 11184 offp = &off; 11185 } 11186 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11187 if (!is_error(ret) && arg3) { 11188 abi_long ret2 = put_user_s64(off, arg3); 11189 if (is_error(ret2)) { 11190 ret = ret2; 11191 } 11192 } 11193 return ret; 11194 } 11195 #endif 11196 #endif 11197 #ifdef TARGET_NR_vfork 11198 case TARGET_NR_vfork: 11199 return get_errno(do_fork(cpu_env, 11200 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 11201 0, 0, 0, 0)); 11202 #endif 11203 #ifdef TARGET_NR_ugetrlimit 11204 case TARGET_NR_ugetrlimit: 11205 { 11206 struct rlimit rlim; 11207 int resource = target_to_host_resource(arg1); 11208 ret = get_errno(getrlimit(resource, &rlim)); 11209 if (!is_error(ret)) { 11210 struct target_rlimit *target_rlim; 11211 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 11212 return -TARGET_EFAULT; 11213 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 11214 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 11215 unlock_user_struct(target_rlim, arg2, 1); 11216 } 11217 return ret; 11218 } 11219 #endif 11220 #ifdef TARGET_NR_truncate64 11221 case TARGET_NR_truncate64: 11222 if (!(p = lock_user_string(arg1))) 11223 return -TARGET_EFAULT; 11224 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 11225 unlock_user(p, arg1, 0); 11226 return ret; 11227 #endif 11228 #ifdef TARGET_NR_ftruncate64 11229 case TARGET_NR_ftruncate64: 11230 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 11231 #endif 11232 #ifdef TARGET_NR_stat64 11233 case TARGET_NR_stat64: 11234 if (!(p = lock_user_string(arg1))) { 11235 return -TARGET_EFAULT; 11236 } 11237 ret = get_errno(stat(path(p), &st)); 11238 unlock_user(p, arg1, 0); 11239 if (!is_error(ret)) 11240 ret = host_to_target_stat64(cpu_env, arg2, &st); 11241 return ret; 11242 #endif 11243 #ifdef TARGET_NR_lstat64 11244 case TARGET_NR_lstat64: 11245 if (!(p = lock_user_string(arg1))) { 11246 return -TARGET_EFAULT; 11247 } 11248 ret = get_errno(lstat(path(p), &st)); 11249 unlock_user(p, arg1, 0); 11250 if (!is_error(ret)) 11251 ret = host_to_target_stat64(cpu_env, arg2, &st); 11252 return ret; 11253 #endif 11254 #ifdef TARGET_NR_fstat64 11255 case TARGET_NR_fstat64: 11256 ret = get_errno(fstat(arg1, &st)); 11257 if (!is_error(ret)) 11258 ret = host_to_target_stat64(cpu_env, arg2, &st); 11259 return ret; 11260 #endif 11261 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11262 #ifdef TARGET_NR_fstatat64 11263 case TARGET_NR_fstatat64: 11264 #endif 11265 #ifdef TARGET_NR_newfstatat 11266 case TARGET_NR_newfstatat: 11267 #endif 11268 if (!(p = lock_user_string(arg2))) { 11269 return -TARGET_EFAULT; 11270 } 11271 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11272 unlock_user(p, arg2, 0); 11273 if (!is_error(ret)) 11274 ret = host_to_target_stat64(cpu_env, arg3, &st); 11275 return ret; 11276 #endif 11277 #if defined(TARGET_NR_statx) 11278 case TARGET_NR_statx: 11279 { 11280 struct target_statx *target_stx; 11281 int dirfd = arg1; 11282 int flags = arg3; 11283 11284 p = lock_user_string(arg2); 11285 if (p == NULL) { 11286 return -TARGET_EFAULT; 11287 } 11288 #if defined(__NR_statx) 11289 { 11290 /* 11291 * It is assumed that struct statx is architecture independent. 11292 */ 11293 struct target_statx host_stx; 11294 int mask = arg4; 11295 11296 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11297 if (!is_error(ret)) { 11298 if (host_to_target_statx(&host_stx, arg5) != 0) { 11299 unlock_user(p, arg2, 0); 11300 return -TARGET_EFAULT; 11301 } 11302 } 11303 11304 if (ret != -TARGET_ENOSYS) { 11305 unlock_user(p, arg2, 0); 11306 return ret; 11307 } 11308 } 11309 #endif 11310 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11311 unlock_user(p, arg2, 0); 11312 11313 if (!is_error(ret)) { 11314 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11315 return -TARGET_EFAULT; 11316 } 11317 memset(target_stx, 0, sizeof(*target_stx)); 11318 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11319 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11320 __put_user(st.st_ino, &target_stx->stx_ino); 11321 __put_user(st.st_mode, &target_stx->stx_mode); 11322 __put_user(st.st_uid, &target_stx->stx_uid); 11323 __put_user(st.st_gid, &target_stx->stx_gid); 11324 __put_user(st.st_nlink, &target_stx->stx_nlink); 11325 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11326 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11327 __put_user(st.st_size, &target_stx->stx_size); 11328 __put_user(st.st_blksize, &target_stx->stx_blksize); 11329 __put_user(st.st_blocks, &target_stx->stx_blocks); 11330 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11331 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11332 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11333 unlock_user_struct(target_stx, arg5, 1); 11334 } 11335 } 11336 return ret; 11337 #endif 11338 #ifdef TARGET_NR_lchown 11339 case TARGET_NR_lchown: 11340 if (!(p = lock_user_string(arg1))) 11341 return -TARGET_EFAULT; 11342 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11343 unlock_user(p, arg1, 0); 11344 return ret; 11345 #endif 11346 #ifdef TARGET_NR_getuid 11347 case TARGET_NR_getuid: 11348 return get_errno(high2lowuid(getuid())); 11349 #endif 11350 #ifdef TARGET_NR_getgid 11351 case TARGET_NR_getgid: 11352 return get_errno(high2lowgid(getgid())); 11353 #endif 11354 #ifdef TARGET_NR_geteuid 11355 case TARGET_NR_geteuid: 11356 return get_errno(high2lowuid(geteuid())); 11357 #endif 11358 #ifdef TARGET_NR_getegid 11359 case TARGET_NR_getegid: 11360 return get_errno(high2lowgid(getegid())); 11361 #endif 11362 case TARGET_NR_setreuid: 11363 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11364 case TARGET_NR_setregid: 11365 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11366 case TARGET_NR_getgroups: 11367 { 11368 int gidsetsize = arg1; 11369 target_id *target_grouplist; 11370 gid_t *grouplist; 11371 int i; 11372 11373 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11374 ret = get_errno(getgroups(gidsetsize, grouplist)); 11375 if (gidsetsize == 0) 11376 return ret; 11377 if (!is_error(ret)) { 11378 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 11379 if (!target_grouplist) 11380 return -TARGET_EFAULT; 11381 for(i = 0;i < ret; i++) 11382 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11383 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 11384 } 11385 } 11386 return ret; 11387 case TARGET_NR_setgroups: 11388 { 11389 int gidsetsize = arg1; 11390 target_id *target_grouplist; 11391 gid_t *grouplist = NULL; 11392 int i; 11393 if (gidsetsize) { 11394 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11395 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 11396 if (!target_grouplist) { 11397 return -TARGET_EFAULT; 11398 } 11399 for (i = 0; i < gidsetsize; i++) { 11400 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11401 } 11402 unlock_user(target_grouplist, arg2, 0); 11403 } 11404 return get_errno(setgroups(gidsetsize, grouplist)); 11405 } 11406 case TARGET_NR_fchown: 11407 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11408 #if defined(TARGET_NR_fchownat) 11409 case TARGET_NR_fchownat: 11410 if (!(p = lock_user_string(arg2))) 11411 return -TARGET_EFAULT; 11412 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11413 low2highgid(arg4), arg5)); 11414 unlock_user(p, arg2, 0); 11415 return ret; 11416 #endif 11417 #ifdef TARGET_NR_setresuid 11418 case TARGET_NR_setresuid: 11419 return get_errno(sys_setresuid(low2highuid(arg1), 11420 low2highuid(arg2), 11421 low2highuid(arg3))); 11422 #endif 11423 #ifdef TARGET_NR_getresuid 11424 case TARGET_NR_getresuid: 11425 { 11426 uid_t ruid, euid, suid; 11427 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11428 if (!is_error(ret)) { 11429 if (put_user_id(high2lowuid(ruid), arg1) 11430 || put_user_id(high2lowuid(euid), arg2) 11431 || put_user_id(high2lowuid(suid), arg3)) 11432 return -TARGET_EFAULT; 11433 } 11434 } 11435 return ret; 11436 #endif 11437 #ifdef TARGET_NR_getresgid 11438 case TARGET_NR_setresgid: 11439 return get_errno(sys_setresgid(low2highgid(arg1), 11440 low2highgid(arg2), 11441 low2highgid(arg3))); 11442 #endif 11443 #ifdef TARGET_NR_getresgid 11444 case TARGET_NR_getresgid: 11445 { 11446 gid_t rgid, egid, sgid; 11447 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11448 if (!is_error(ret)) { 11449 if (put_user_id(high2lowgid(rgid), arg1) 11450 || put_user_id(high2lowgid(egid), arg2) 11451 || put_user_id(high2lowgid(sgid), arg3)) 11452 return -TARGET_EFAULT; 11453 } 11454 } 11455 return ret; 11456 #endif 11457 #ifdef TARGET_NR_chown 11458 case TARGET_NR_chown: 11459 if (!(p = lock_user_string(arg1))) 11460 return -TARGET_EFAULT; 11461 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11462 unlock_user(p, arg1, 0); 11463 return ret; 11464 #endif 11465 case TARGET_NR_setuid: 11466 return get_errno(sys_setuid(low2highuid(arg1))); 11467 case TARGET_NR_setgid: 11468 return get_errno(sys_setgid(low2highgid(arg1))); 11469 case TARGET_NR_setfsuid: 11470 return get_errno(setfsuid(arg1)); 11471 case TARGET_NR_setfsgid: 11472 return get_errno(setfsgid(arg1)); 11473 11474 #ifdef TARGET_NR_lchown32 11475 case TARGET_NR_lchown32: 11476 if (!(p = lock_user_string(arg1))) 11477 return -TARGET_EFAULT; 11478 ret = get_errno(lchown(p, arg2, arg3)); 11479 unlock_user(p, arg1, 0); 11480 return ret; 11481 #endif 11482 #ifdef TARGET_NR_getuid32 11483 case TARGET_NR_getuid32: 11484 return get_errno(getuid()); 11485 #endif 11486 11487 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11488 /* Alpha specific */ 11489 case TARGET_NR_getxuid: 11490 { 11491 uid_t euid; 11492 euid=geteuid(); 11493 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; 11494 } 11495 return get_errno(getuid()); 11496 #endif 11497 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11498 /* Alpha specific */ 11499 case TARGET_NR_getxgid: 11500 { 11501 uid_t egid; 11502 egid=getegid(); 11503 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; 11504 } 11505 return get_errno(getgid()); 11506 #endif 11507 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11508 /* Alpha specific */ 11509 case TARGET_NR_osf_getsysinfo: 11510 ret = -TARGET_EOPNOTSUPP; 11511 switch (arg1) { 11512 case TARGET_GSI_IEEE_FP_CONTROL: 11513 { 11514 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11515 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr; 11516 11517 swcr &= ~SWCR_STATUS_MASK; 11518 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 11519 11520 if (put_user_u64 (swcr, arg2)) 11521 return -TARGET_EFAULT; 11522 ret = 0; 11523 } 11524 break; 11525 11526 /* case GSI_IEEE_STATE_AT_SIGNAL: 11527 -- Not implemented in linux kernel. 11528 case GSI_UACPROC: 11529 -- Retrieves current unaligned access state; not much used. 11530 case GSI_PROC_TYPE: 11531 -- Retrieves implver information; surely not used. 11532 case GSI_GET_HWRPB: 11533 -- Grabs a copy of the HWRPB; surely not used. 11534 */ 11535 } 11536 return ret; 11537 #endif 11538 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 11539 /* Alpha specific */ 11540 case TARGET_NR_osf_setsysinfo: 11541 ret = -TARGET_EOPNOTSUPP; 11542 switch (arg1) { 11543 case TARGET_SSI_IEEE_FP_CONTROL: 11544 { 11545 uint64_t swcr, fpcr; 11546 11547 if (get_user_u64 (swcr, arg2)) { 11548 return -TARGET_EFAULT; 11549 } 11550 11551 /* 11552 * The kernel calls swcr_update_status to update the 11553 * status bits from the fpcr at every point that it 11554 * could be queried. Therefore, we store the status 11555 * bits only in FPCR. 11556 */ 11557 ((CPUAlphaState *)cpu_env)->swcr 11558 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 11559 11560 fpcr = cpu_alpha_load_fpcr(cpu_env); 11561 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11562 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11563 cpu_alpha_store_fpcr(cpu_env, fpcr); 11564 ret = 0; 11565 } 11566 break; 11567 11568 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11569 { 11570 uint64_t exc, fpcr, fex; 11571 11572 if (get_user_u64(exc, arg2)) { 11573 return -TARGET_EFAULT; 11574 } 11575 exc &= SWCR_STATUS_MASK; 11576 fpcr = cpu_alpha_load_fpcr(cpu_env); 11577 11578 /* Old exceptions are not signaled. */ 11579 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11580 fex = exc & ~fex; 11581 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11582 fex &= ((CPUArchState *)cpu_env)->swcr; 11583 11584 /* Update the hardware fpcr. */ 11585 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11586 cpu_alpha_store_fpcr(cpu_env, fpcr); 11587 11588 if (fex) { 11589 int si_code = TARGET_FPE_FLTUNK; 11590 target_siginfo_t info; 11591 11592 if (fex & SWCR_TRAP_ENABLE_DNO) { 11593 si_code = TARGET_FPE_FLTUND; 11594 } 11595 if (fex & SWCR_TRAP_ENABLE_INE) { 11596 si_code = TARGET_FPE_FLTRES; 11597 } 11598 if (fex & SWCR_TRAP_ENABLE_UNF) { 11599 si_code = TARGET_FPE_FLTUND; 11600 } 11601 if (fex & SWCR_TRAP_ENABLE_OVF) { 11602 si_code = TARGET_FPE_FLTOVF; 11603 } 11604 if (fex & SWCR_TRAP_ENABLE_DZE) { 11605 si_code = TARGET_FPE_FLTDIV; 11606 } 11607 if (fex & SWCR_TRAP_ENABLE_INV) { 11608 si_code = TARGET_FPE_FLTINV; 11609 } 11610 11611 info.si_signo = SIGFPE; 11612 info.si_errno = 0; 11613 info.si_code = si_code; 11614 info._sifields._sigfault._addr 11615 = ((CPUArchState *)cpu_env)->pc; 11616 queue_signal((CPUArchState *)cpu_env, info.si_signo, 11617 QEMU_SI_FAULT, &info); 11618 } 11619 ret = 0; 11620 } 11621 break; 11622 11623 /* case SSI_NVPAIRS: 11624 -- Used with SSIN_UACPROC to enable unaligned accesses. 11625 case SSI_IEEE_STATE_AT_SIGNAL: 11626 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11627 -- Not implemented in linux kernel 11628 */ 11629 } 11630 return ret; 11631 #endif 11632 #ifdef TARGET_NR_osf_sigprocmask 11633 /* Alpha specific. */ 11634 case TARGET_NR_osf_sigprocmask: 11635 { 11636 abi_ulong mask; 11637 int how; 11638 sigset_t set, oldset; 11639 11640 switch(arg1) { 11641 case TARGET_SIG_BLOCK: 11642 how = SIG_BLOCK; 11643 break; 11644 case TARGET_SIG_UNBLOCK: 11645 how = SIG_UNBLOCK; 11646 break; 11647 case TARGET_SIG_SETMASK: 11648 how = SIG_SETMASK; 11649 break; 11650 default: 11651 return -TARGET_EINVAL; 11652 } 11653 mask = arg2; 11654 target_to_host_old_sigset(&set, &mask); 11655 ret = do_sigprocmask(how, &set, &oldset); 11656 if (!ret) { 11657 host_to_target_old_sigset(&mask, &oldset); 11658 ret = mask; 11659 } 11660 } 11661 return ret; 11662 #endif 11663 11664 #ifdef TARGET_NR_getgid32 11665 case TARGET_NR_getgid32: 11666 return get_errno(getgid()); 11667 #endif 11668 #ifdef TARGET_NR_geteuid32 11669 case TARGET_NR_geteuid32: 11670 return get_errno(geteuid()); 11671 #endif 11672 #ifdef TARGET_NR_getegid32 11673 case TARGET_NR_getegid32: 11674 return get_errno(getegid()); 11675 #endif 11676 #ifdef TARGET_NR_setreuid32 11677 case TARGET_NR_setreuid32: 11678 return get_errno(setreuid(arg1, arg2)); 11679 #endif 11680 #ifdef TARGET_NR_setregid32 11681 case TARGET_NR_setregid32: 11682 return get_errno(setregid(arg1, arg2)); 11683 #endif 11684 #ifdef TARGET_NR_getgroups32 11685 case TARGET_NR_getgroups32: 11686 { 11687 int gidsetsize = arg1; 11688 uint32_t *target_grouplist; 11689 gid_t *grouplist; 11690 int i; 11691 11692 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11693 ret = get_errno(getgroups(gidsetsize, grouplist)); 11694 if (gidsetsize == 0) 11695 return ret; 11696 if (!is_error(ret)) { 11697 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11698 if (!target_grouplist) { 11699 return -TARGET_EFAULT; 11700 } 11701 for(i = 0;i < ret; i++) 11702 target_grouplist[i] = tswap32(grouplist[i]); 11703 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11704 } 11705 } 11706 return ret; 11707 #endif 11708 #ifdef TARGET_NR_setgroups32 11709 case TARGET_NR_setgroups32: 11710 { 11711 int gidsetsize = arg1; 11712 uint32_t *target_grouplist; 11713 gid_t *grouplist; 11714 int i; 11715 11716 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11717 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11718 if (!target_grouplist) { 11719 return -TARGET_EFAULT; 11720 } 11721 for(i = 0;i < gidsetsize; i++) 11722 grouplist[i] = tswap32(target_grouplist[i]); 11723 unlock_user(target_grouplist, arg2, 0); 11724 return get_errno(setgroups(gidsetsize, grouplist)); 11725 } 11726 #endif 11727 #ifdef TARGET_NR_fchown32 11728 case TARGET_NR_fchown32: 11729 return get_errno(fchown(arg1, arg2, arg3)); 11730 #endif 11731 #ifdef TARGET_NR_setresuid32 11732 case TARGET_NR_setresuid32: 11733 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11734 #endif 11735 #ifdef TARGET_NR_getresuid32 11736 case TARGET_NR_getresuid32: 11737 { 11738 uid_t ruid, euid, suid; 11739 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11740 if (!is_error(ret)) { 11741 if (put_user_u32(ruid, arg1) 11742 || put_user_u32(euid, arg2) 11743 || put_user_u32(suid, arg3)) 11744 return -TARGET_EFAULT; 11745 } 11746 } 11747 return ret; 11748 #endif 11749 #ifdef TARGET_NR_setresgid32 11750 case TARGET_NR_setresgid32: 11751 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11752 #endif 11753 #ifdef TARGET_NR_getresgid32 11754 case TARGET_NR_getresgid32: 11755 { 11756 gid_t rgid, egid, sgid; 11757 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11758 if (!is_error(ret)) { 11759 if (put_user_u32(rgid, arg1) 11760 || put_user_u32(egid, arg2) 11761 || put_user_u32(sgid, arg3)) 11762 return -TARGET_EFAULT; 11763 } 11764 } 11765 return ret; 11766 #endif 11767 #ifdef TARGET_NR_chown32 11768 case TARGET_NR_chown32: 11769 if (!(p = lock_user_string(arg1))) 11770 return -TARGET_EFAULT; 11771 ret = get_errno(chown(p, arg2, arg3)); 11772 unlock_user(p, arg1, 0); 11773 return ret; 11774 #endif 11775 #ifdef TARGET_NR_setuid32 11776 case TARGET_NR_setuid32: 11777 return get_errno(sys_setuid(arg1)); 11778 #endif 11779 #ifdef TARGET_NR_setgid32 11780 case TARGET_NR_setgid32: 11781 return get_errno(sys_setgid(arg1)); 11782 #endif 11783 #ifdef TARGET_NR_setfsuid32 11784 case TARGET_NR_setfsuid32: 11785 return get_errno(setfsuid(arg1)); 11786 #endif 11787 #ifdef TARGET_NR_setfsgid32 11788 case TARGET_NR_setfsgid32: 11789 return get_errno(setfsgid(arg1)); 11790 #endif 11791 #ifdef TARGET_NR_mincore 11792 case TARGET_NR_mincore: 11793 { 11794 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11795 if (!a) { 11796 return -TARGET_ENOMEM; 11797 } 11798 p = lock_user_string(arg3); 11799 if (!p) { 11800 ret = -TARGET_EFAULT; 11801 } else { 11802 ret = get_errno(mincore(a, arg2, p)); 11803 unlock_user(p, arg3, ret); 11804 } 11805 unlock_user(a, arg1, 0); 11806 } 11807 return ret; 11808 #endif 11809 #ifdef TARGET_NR_arm_fadvise64_64 11810 case TARGET_NR_arm_fadvise64_64: 11811 /* arm_fadvise64_64 looks like fadvise64_64 but 11812 * with different argument order: fd, advice, offset, len 11813 * rather than the usual fd, offset, len, advice. 11814 * Note that offset and len are both 64-bit so appear as 11815 * pairs of 32-bit registers. 11816 */ 11817 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11818 target_offset64(arg5, arg6), arg2); 11819 return -host_to_target_errno(ret); 11820 #endif 11821 11822 #if TARGET_ABI_BITS == 32 11823 11824 #ifdef TARGET_NR_fadvise64_64 11825 case TARGET_NR_fadvise64_64: 11826 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11827 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11828 ret = arg2; 11829 arg2 = arg3; 11830 arg3 = arg4; 11831 arg4 = arg5; 11832 arg5 = arg6; 11833 arg6 = ret; 11834 #else 11835 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11836 if (regpairs_aligned(cpu_env, num)) { 11837 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11838 arg2 = arg3; 11839 arg3 = arg4; 11840 arg4 = arg5; 11841 arg5 = arg6; 11842 arg6 = arg7; 11843 } 11844 #endif 11845 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11846 target_offset64(arg4, arg5), arg6); 11847 return -host_to_target_errno(ret); 11848 #endif 11849 11850 #ifdef TARGET_NR_fadvise64 11851 case TARGET_NR_fadvise64: 11852 /* 5 args: fd, offset (high, low), len, advice */ 11853 if (regpairs_aligned(cpu_env, num)) { 11854 /* offset is in (3,4), len in 5 and advice in 6 */ 11855 arg2 = arg3; 11856 arg3 = arg4; 11857 arg4 = arg5; 11858 arg5 = arg6; 11859 } 11860 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11861 return -host_to_target_errno(ret); 11862 #endif 11863 11864 #else /* not a 32-bit ABI */ 11865 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11866 #ifdef TARGET_NR_fadvise64_64 11867 case TARGET_NR_fadvise64_64: 11868 #endif 11869 #ifdef TARGET_NR_fadvise64 11870 case TARGET_NR_fadvise64: 11871 #endif 11872 #ifdef TARGET_S390X 11873 switch (arg4) { 11874 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11875 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11876 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11877 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11878 default: break; 11879 } 11880 #endif 11881 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11882 #endif 11883 #endif /* end of 64-bit ABI fadvise handling */ 11884 11885 #ifdef TARGET_NR_madvise 11886 case TARGET_NR_madvise: 11887 /* A straight passthrough may not be safe because qemu sometimes 11888 turns private file-backed mappings into anonymous mappings. 11889 This will break MADV_DONTNEED. 11890 This is a hint, so ignoring and returning success is ok. */ 11891 return 0; 11892 #endif 11893 #ifdef TARGET_NR_fcntl64 11894 case TARGET_NR_fcntl64: 11895 { 11896 int cmd; 11897 struct flock64 fl; 11898 from_flock64_fn *copyfrom = copy_from_user_flock64; 11899 to_flock64_fn *copyto = copy_to_user_flock64; 11900 11901 #ifdef TARGET_ARM 11902 if (!((CPUARMState *)cpu_env)->eabi) { 11903 copyfrom = copy_from_user_oabi_flock64; 11904 copyto = copy_to_user_oabi_flock64; 11905 } 11906 #endif 11907 11908 cmd = target_to_host_fcntl_cmd(arg2); 11909 if (cmd == -TARGET_EINVAL) { 11910 return cmd; 11911 } 11912 11913 switch(arg2) { 11914 case TARGET_F_GETLK64: 11915 ret = copyfrom(&fl, arg3); 11916 if (ret) { 11917 break; 11918 } 11919 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11920 if (ret == 0) { 11921 ret = copyto(arg3, &fl); 11922 } 11923 break; 11924 11925 case TARGET_F_SETLK64: 11926 case TARGET_F_SETLKW64: 11927 ret = copyfrom(&fl, arg3); 11928 if (ret) { 11929 break; 11930 } 11931 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11932 break; 11933 default: 11934 ret = do_fcntl(arg1, arg2, arg3); 11935 break; 11936 } 11937 return ret; 11938 } 11939 #endif 11940 #ifdef TARGET_NR_cacheflush 11941 case TARGET_NR_cacheflush: 11942 /* self-modifying code is handled automatically, so nothing needed */ 11943 return 0; 11944 #endif 11945 #ifdef TARGET_NR_getpagesize 11946 case TARGET_NR_getpagesize: 11947 return TARGET_PAGE_SIZE; 11948 #endif 11949 case TARGET_NR_gettid: 11950 return get_errno(sys_gettid()); 11951 #ifdef TARGET_NR_readahead 11952 case TARGET_NR_readahead: 11953 #if TARGET_ABI_BITS == 32 11954 if (regpairs_aligned(cpu_env, num)) { 11955 arg2 = arg3; 11956 arg3 = arg4; 11957 arg4 = arg5; 11958 } 11959 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11960 #else 11961 ret = get_errno(readahead(arg1, arg2, arg3)); 11962 #endif 11963 return ret; 11964 #endif 11965 #ifdef CONFIG_ATTR 11966 #ifdef TARGET_NR_setxattr 11967 case TARGET_NR_listxattr: 11968 case TARGET_NR_llistxattr: 11969 { 11970 void *p, *b = 0; 11971 if (arg2) { 11972 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11973 if (!b) { 11974 return -TARGET_EFAULT; 11975 } 11976 } 11977 p = lock_user_string(arg1); 11978 if (p) { 11979 if (num == TARGET_NR_listxattr) { 11980 ret = get_errno(listxattr(p, b, arg3)); 11981 } else { 11982 ret = get_errno(llistxattr(p, b, arg3)); 11983 } 11984 } else { 11985 ret = -TARGET_EFAULT; 11986 } 11987 unlock_user(p, arg1, 0); 11988 unlock_user(b, arg2, arg3); 11989 return ret; 11990 } 11991 case TARGET_NR_flistxattr: 11992 { 11993 void *b = 0; 11994 if (arg2) { 11995 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11996 if (!b) { 11997 return -TARGET_EFAULT; 11998 } 11999 } 12000 ret = get_errno(flistxattr(arg1, b, arg3)); 12001 unlock_user(b, arg2, arg3); 12002 return ret; 12003 } 12004 case TARGET_NR_setxattr: 12005 case TARGET_NR_lsetxattr: 12006 { 12007 void *p, *n, *v = 0; 12008 if (arg3) { 12009 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12010 if (!v) { 12011 return -TARGET_EFAULT; 12012 } 12013 } 12014 p = lock_user_string(arg1); 12015 n = lock_user_string(arg2); 12016 if (p && n) { 12017 if (num == TARGET_NR_setxattr) { 12018 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 12019 } else { 12020 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 12021 } 12022 } else { 12023 ret = -TARGET_EFAULT; 12024 } 12025 unlock_user(p, arg1, 0); 12026 unlock_user(n, arg2, 0); 12027 unlock_user(v, arg3, 0); 12028 } 12029 return ret; 12030 case TARGET_NR_fsetxattr: 12031 { 12032 void *n, *v = 0; 12033 if (arg3) { 12034 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12035 if (!v) { 12036 return -TARGET_EFAULT; 12037 } 12038 } 12039 n = lock_user_string(arg2); 12040 if (n) { 12041 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 12042 } else { 12043 ret = -TARGET_EFAULT; 12044 } 12045 unlock_user(n, arg2, 0); 12046 unlock_user(v, arg3, 0); 12047 } 12048 return ret; 12049 case TARGET_NR_getxattr: 12050 case TARGET_NR_lgetxattr: 12051 { 12052 void *p, *n, *v = 0; 12053 if (arg3) { 12054 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12055 if (!v) { 12056 return -TARGET_EFAULT; 12057 } 12058 } 12059 p = lock_user_string(arg1); 12060 n = lock_user_string(arg2); 12061 if (p && n) { 12062 if (num == TARGET_NR_getxattr) { 12063 ret = get_errno(getxattr(p, n, v, arg4)); 12064 } else { 12065 ret = get_errno(lgetxattr(p, n, v, arg4)); 12066 } 12067 } else { 12068 ret = -TARGET_EFAULT; 12069 } 12070 unlock_user(p, arg1, 0); 12071 unlock_user(n, arg2, 0); 12072 unlock_user(v, arg3, arg4); 12073 } 12074 return ret; 12075 case TARGET_NR_fgetxattr: 12076 { 12077 void *n, *v = 0; 12078 if (arg3) { 12079 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12080 if (!v) { 12081 return -TARGET_EFAULT; 12082 } 12083 } 12084 n = lock_user_string(arg2); 12085 if (n) { 12086 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 12087 } else { 12088 ret = -TARGET_EFAULT; 12089 } 12090 unlock_user(n, arg2, 0); 12091 unlock_user(v, arg3, arg4); 12092 } 12093 return ret; 12094 case TARGET_NR_removexattr: 12095 case TARGET_NR_lremovexattr: 12096 { 12097 void *p, *n; 12098 p = lock_user_string(arg1); 12099 n = lock_user_string(arg2); 12100 if (p && n) { 12101 if (num == TARGET_NR_removexattr) { 12102 ret = get_errno(removexattr(p, n)); 12103 } else { 12104 ret = get_errno(lremovexattr(p, n)); 12105 } 12106 } else { 12107 ret = -TARGET_EFAULT; 12108 } 12109 unlock_user(p, arg1, 0); 12110 unlock_user(n, arg2, 0); 12111 } 12112 return ret; 12113 case TARGET_NR_fremovexattr: 12114 { 12115 void *n; 12116 n = lock_user_string(arg2); 12117 if (n) { 12118 ret = get_errno(fremovexattr(arg1, n)); 12119 } else { 12120 ret = -TARGET_EFAULT; 12121 } 12122 unlock_user(n, arg2, 0); 12123 } 12124 return ret; 12125 #endif 12126 #endif /* CONFIG_ATTR */ 12127 #ifdef TARGET_NR_set_thread_area 12128 case TARGET_NR_set_thread_area: 12129 #if defined(TARGET_MIPS) 12130 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; 12131 return 0; 12132 #elif defined(TARGET_CRIS) 12133 if (arg1 & 0xff) 12134 ret = -TARGET_EINVAL; 12135 else { 12136 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; 12137 ret = 0; 12138 } 12139 return ret; 12140 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 12141 return do_set_thread_area(cpu_env, arg1); 12142 #elif defined(TARGET_M68K) 12143 { 12144 TaskState *ts = cpu->opaque; 12145 ts->tp_value = arg1; 12146 return 0; 12147 } 12148 #else 12149 return -TARGET_ENOSYS; 12150 #endif 12151 #endif 12152 #ifdef TARGET_NR_get_thread_area 12153 case TARGET_NR_get_thread_area: 12154 #if defined(TARGET_I386) && defined(TARGET_ABI32) 12155 return do_get_thread_area(cpu_env, arg1); 12156 #elif defined(TARGET_M68K) 12157 { 12158 TaskState *ts = cpu->opaque; 12159 return ts->tp_value; 12160 } 12161 #else 12162 return -TARGET_ENOSYS; 12163 #endif 12164 #endif 12165 #ifdef TARGET_NR_getdomainname 12166 case TARGET_NR_getdomainname: 12167 return -TARGET_ENOSYS; 12168 #endif 12169 12170 #ifdef TARGET_NR_clock_settime 12171 case TARGET_NR_clock_settime: 12172 { 12173 struct timespec ts; 12174 12175 ret = target_to_host_timespec(&ts, arg2); 12176 if (!is_error(ret)) { 12177 ret = get_errno(clock_settime(arg1, &ts)); 12178 } 12179 return ret; 12180 } 12181 #endif 12182 #ifdef TARGET_NR_clock_settime64 12183 case TARGET_NR_clock_settime64: 12184 { 12185 struct timespec ts; 12186 12187 ret = target_to_host_timespec64(&ts, arg2); 12188 if (!is_error(ret)) { 12189 ret = get_errno(clock_settime(arg1, &ts)); 12190 } 12191 return ret; 12192 } 12193 #endif 12194 #ifdef TARGET_NR_clock_gettime 12195 case TARGET_NR_clock_gettime: 12196 { 12197 struct timespec ts; 12198 ret = get_errno(clock_gettime(arg1, &ts)); 12199 if (!is_error(ret)) { 12200 ret = host_to_target_timespec(arg2, &ts); 12201 } 12202 return ret; 12203 } 12204 #endif 12205 #ifdef TARGET_NR_clock_gettime64 12206 case TARGET_NR_clock_gettime64: 12207 { 12208 struct timespec ts; 12209 ret = get_errno(clock_gettime(arg1, &ts)); 12210 if (!is_error(ret)) { 12211 ret = host_to_target_timespec64(arg2, &ts); 12212 } 12213 return ret; 12214 } 12215 #endif 12216 #ifdef TARGET_NR_clock_getres 12217 case TARGET_NR_clock_getres: 12218 { 12219 struct timespec ts; 12220 ret = get_errno(clock_getres(arg1, &ts)); 12221 if (!is_error(ret)) { 12222 host_to_target_timespec(arg2, &ts); 12223 } 12224 return ret; 12225 } 12226 #endif 12227 #ifdef TARGET_NR_clock_getres_time64 12228 case TARGET_NR_clock_getres_time64: 12229 { 12230 struct timespec ts; 12231 ret = get_errno(clock_getres(arg1, &ts)); 12232 if (!is_error(ret)) { 12233 host_to_target_timespec64(arg2, &ts); 12234 } 12235 return ret; 12236 } 12237 #endif 12238 #ifdef TARGET_NR_clock_nanosleep 12239 case TARGET_NR_clock_nanosleep: 12240 { 12241 struct timespec ts; 12242 if (target_to_host_timespec(&ts, arg3)) { 12243 return -TARGET_EFAULT; 12244 } 12245 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12246 &ts, arg4 ? &ts : NULL)); 12247 /* 12248 * if the call is interrupted by a signal handler, it fails 12249 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12250 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12251 */ 12252 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12253 host_to_target_timespec(arg4, &ts)) { 12254 return -TARGET_EFAULT; 12255 } 12256 12257 return ret; 12258 } 12259 #endif 12260 #ifdef TARGET_NR_clock_nanosleep_time64 12261 case TARGET_NR_clock_nanosleep_time64: 12262 { 12263 struct timespec ts; 12264 12265 if (target_to_host_timespec64(&ts, arg3)) { 12266 return -TARGET_EFAULT; 12267 } 12268 12269 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12270 &ts, arg4 ? &ts : NULL)); 12271 12272 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12273 host_to_target_timespec64(arg4, &ts)) { 12274 return -TARGET_EFAULT; 12275 } 12276 return ret; 12277 } 12278 #endif 12279 12280 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 12281 case TARGET_NR_set_tid_address: 12282 return get_errno(set_tid_address((int *)g2h(cpu, arg1))); 12283 #endif 12284 12285 case TARGET_NR_tkill: 12286 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12287 12288 case TARGET_NR_tgkill: 12289 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12290 target_to_host_signal(arg3))); 12291 12292 #ifdef TARGET_NR_set_robust_list 12293 case TARGET_NR_set_robust_list: 12294 case TARGET_NR_get_robust_list: 12295 /* The ABI for supporting robust futexes has userspace pass 12296 * the kernel a pointer to a linked list which is updated by 12297 * userspace after the syscall; the list is walked by the kernel 12298 * when the thread exits. Since the linked list in QEMU guest 12299 * memory isn't a valid linked list for the host and we have 12300 * no way to reliably intercept the thread-death event, we can't 12301 * support these. Silently return ENOSYS so that guest userspace 12302 * falls back to a non-robust futex implementation (which should 12303 * be OK except in the corner case of the guest crashing while 12304 * holding a mutex that is shared with another process via 12305 * shared memory). 12306 */ 12307 return -TARGET_ENOSYS; 12308 #endif 12309 12310 #if defined(TARGET_NR_utimensat) 12311 case TARGET_NR_utimensat: 12312 { 12313 struct timespec *tsp, ts[2]; 12314 if (!arg3) { 12315 tsp = NULL; 12316 } else { 12317 if (target_to_host_timespec(ts, arg3)) { 12318 return -TARGET_EFAULT; 12319 } 12320 if (target_to_host_timespec(ts + 1, arg3 + 12321 sizeof(struct target_timespec))) { 12322 return -TARGET_EFAULT; 12323 } 12324 tsp = ts; 12325 } 12326 if (!arg2) 12327 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12328 else { 12329 if (!(p = lock_user_string(arg2))) { 12330 return -TARGET_EFAULT; 12331 } 12332 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12333 unlock_user(p, arg2, 0); 12334 } 12335 } 12336 return ret; 12337 #endif 12338 #ifdef TARGET_NR_utimensat_time64 12339 case TARGET_NR_utimensat_time64: 12340 { 12341 struct timespec *tsp, ts[2]; 12342 if (!arg3) { 12343 tsp = NULL; 12344 } else { 12345 if (target_to_host_timespec64(ts, arg3)) { 12346 return -TARGET_EFAULT; 12347 } 12348 if (target_to_host_timespec64(ts + 1, arg3 + 12349 sizeof(struct target__kernel_timespec))) { 12350 return -TARGET_EFAULT; 12351 } 12352 tsp = ts; 12353 } 12354 if (!arg2) 12355 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12356 else { 12357 p = lock_user_string(arg2); 12358 if (!p) { 12359 return -TARGET_EFAULT; 12360 } 12361 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12362 unlock_user(p, arg2, 0); 12363 } 12364 } 12365 return ret; 12366 #endif 12367 #ifdef TARGET_NR_futex 12368 case TARGET_NR_futex: 12369 return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6); 12370 #endif 12371 #ifdef TARGET_NR_futex_time64 12372 case TARGET_NR_futex_time64: 12373 return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6); 12374 #endif 12375 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 12376 case TARGET_NR_inotify_init: 12377 ret = get_errno(sys_inotify_init()); 12378 if (ret >= 0) { 12379 fd_trans_register(ret, &target_inotify_trans); 12380 } 12381 return ret; 12382 #endif 12383 #ifdef CONFIG_INOTIFY1 12384 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 12385 case TARGET_NR_inotify_init1: 12386 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1, 12387 fcntl_flags_tbl))); 12388 if (ret >= 0) { 12389 fd_trans_register(ret, &target_inotify_trans); 12390 } 12391 return ret; 12392 #endif 12393 #endif 12394 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 12395 case TARGET_NR_inotify_add_watch: 12396 p = lock_user_string(arg2); 12397 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); 12398 unlock_user(p, arg2, 0); 12399 return ret; 12400 #endif 12401 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 12402 case TARGET_NR_inotify_rm_watch: 12403 return get_errno(sys_inotify_rm_watch(arg1, arg2)); 12404 #endif 12405 12406 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12407 case TARGET_NR_mq_open: 12408 { 12409 struct mq_attr posix_mq_attr; 12410 struct mq_attr *pposix_mq_attr; 12411 int host_flags; 12412 12413 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12414 pposix_mq_attr = NULL; 12415 if (arg4) { 12416 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12417 return -TARGET_EFAULT; 12418 } 12419 pposix_mq_attr = &posix_mq_attr; 12420 } 12421 p = lock_user_string(arg1 - 1); 12422 if (!p) { 12423 return -TARGET_EFAULT; 12424 } 12425 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12426 unlock_user (p, arg1, 0); 12427 } 12428 return ret; 12429 12430 case TARGET_NR_mq_unlink: 12431 p = lock_user_string(arg1 - 1); 12432 if (!p) { 12433 return -TARGET_EFAULT; 12434 } 12435 ret = get_errno(mq_unlink(p)); 12436 unlock_user (p, arg1, 0); 12437 return ret; 12438 12439 #ifdef TARGET_NR_mq_timedsend 12440 case TARGET_NR_mq_timedsend: 12441 { 12442 struct timespec ts; 12443 12444 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12445 if (arg5 != 0) { 12446 if (target_to_host_timespec(&ts, arg5)) { 12447 return -TARGET_EFAULT; 12448 } 12449 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12450 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12451 return -TARGET_EFAULT; 12452 } 12453 } else { 12454 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12455 } 12456 unlock_user (p, arg2, arg3); 12457 } 12458 return ret; 12459 #endif 12460 #ifdef TARGET_NR_mq_timedsend_time64 12461 case TARGET_NR_mq_timedsend_time64: 12462 { 12463 struct timespec ts; 12464 12465 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12466 if (arg5 != 0) { 12467 if (target_to_host_timespec64(&ts, arg5)) { 12468 return -TARGET_EFAULT; 12469 } 12470 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12471 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12472 return -TARGET_EFAULT; 12473 } 12474 } else { 12475 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12476 } 12477 unlock_user(p, arg2, arg3); 12478 } 12479 return ret; 12480 #endif 12481 12482 #ifdef TARGET_NR_mq_timedreceive 12483 case TARGET_NR_mq_timedreceive: 12484 { 12485 struct timespec ts; 12486 unsigned int prio; 12487 12488 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12489 if (arg5 != 0) { 12490 if (target_to_host_timespec(&ts, arg5)) { 12491 return -TARGET_EFAULT; 12492 } 12493 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12494 &prio, &ts)); 12495 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12496 return -TARGET_EFAULT; 12497 } 12498 } else { 12499 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12500 &prio, NULL)); 12501 } 12502 unlock_user (p, arg2, arg3); 12503 if (arg4 != 0) 12504 put_user_u32(prio, arg4); 12505 } 12506 return ret; 12507 #endif 12508 #ifdef TARGET_NR_mq_timedreceive_time64 12509 case TARGET_NR_mq_timedreceive_time64: 12510 { 12511 struct timespec ts; 12512 unsigned int prio; 12513 12514 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12515 if (arg5 != 0) { 12516 if (target_to_host_timespec64(&ts, arg5)) { 12517 return -TARGET_EFAULT; 12518 } 12519 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12520 &prio, &ts)); 12521 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12522 return -TARGET_EFAULT; 12523 } 12524 } else { 12525 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12526 &prio, NULL)); 12527 } 12528 unlock_user(p, arg2, arg3); 12529 if (arg4 != 0) { 12530 put_user_u32(prio, arg4); 12531 } 12532 } 12533 return ret; 12534 #endif 12535 12536 /* Not implemented for now... */ 12537 /* case TARGET_NR_mq_notify: */ 12538 /* break; */ 12539 12540 case TARGET_NR_mq_getsetattr: 12541 { 12542 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 12543 ret = 0; 12544 if (arg2 != 0) { 12545 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 12546 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 12547 &posix_mq_attr_out)); 12548 } else if (arg3 != 0) { 12549 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 12550 } 12551 if (ret == 0 && arg3 != 0) { 12552 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 12553 } 12554 } 12555 return ret; 12556 #endif 12557 12558 #ifdef CONFIG_SPLICE 12559 #ifdef TARGET_NR_tee 12560 case TARGET_NR_tee: 12561 { 12562 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 12563 } 12564 return ret; 12565 #endif 12566 #ifdef TARGET_NR_splice 12567 case TARGET_NR_splice: 12568 { 12569 loff_t loff_in, loff_out; 12570 loff_t *ploff_in = NULL, *ploff_out = NULL; 12571 if (arg2) { 12572 if (get_user_u64(loff_in, arg2)) { 12573 return -TARGET_EFAULT; 12574 } 12575 ploff_in = &loff_in; 12576 } 12577 if (arg4) { 12578 if (get_user_u64(loff_out, arg4)) { 12579 return -TARGET_EFAULT; 12580 } 12581 ploff_out = &loff_out; 12582 } 12583 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 12584 if (arg2) { 12585 if (put_user_u64(loff_in, arg2)) { 12586 return -TARGET_EFAULT; 12587 } 12588 } 12589 if (arg4) { 12590 if (put_user_u64(loff_out, arg4)) { 12591 return -TARGET_EFAULT; 12592 } 12593 } 12594 } 12595 return ret; 12596 #endif 12597 #ifdef TARGET_NR_vmsplice 12598 case TARGET_NR_vmsplice: 12599 { 12600 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 12601 if (vec != NULL) { 12602 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 12603 unlock_iovec(vec, arg2, arg3, 0); 12604 } else { 12605 ret = -host_to_target_errno(errno); 12606 } 12607 } 12608 return ret; 12609 #endif 12610 #endif /* CONFIG_SPLICE */ 12611 #ifdef CONFIG_EVENTFD 12612 #if defined(TARGET_NR_eventfd) 12613 case TARGET_NR_eventfd: 12614 ret = get_errno(eventfd(arg1, 0)); 12615 if (ret >= 0) { 12616 fd_trans_register(ret, &target_eventfd_trans); 12617 } 12618 return ret; 12619 #endif 12620 #if defined(TARGET_NR_eventfd2) 12621 case TARGET_NR_eventfd2: 12622 { 12623 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 12624 if (arg2 & TARGET_O_NONBLOCK) { 12625 host_flags |= O_NONBLOCK; 12626 } 12627 if (arg2 & TARGET_O_CLOEXEC) { 12628 host_flags |= O_CLOEXEC; 12629 } 12630 ret = get_errno(eventfd(arg1, host_flags)); 12631 if (ret >= 0) { 12632 fd_trans_register(ret, &target_eventfd_trans); 12633 } 12634 return ret; 12635 } 12636 #endif 12637 #endif /* CONFIG_EVENTFD */ 12638 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 12639 case TARGET_NR_fallocate: 12640 #if TARGET_ABI_BITS == 32 12641 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 12642 target_offset64(arg5, arg6))); 12643 #else 12644 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 12645 #endif 12646 return ret; 12647 #endif 12648 #if defined(CONFIG_SYNC_FILE_RANGE) 12649 #if defined(TARGET_NR_sync_file_range) 12650 case TARGET_NR_sync_file_range: 12651 #if TARGET_ABI_BITS == 32 12652 #if defined(TARGET_MIPS) 12653 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12654 target_offset64(arg5, arg6), arg7)); 12655 #else 12656 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 12657 target_offset64(arg4, arg5), arg6)); 12658 #endif /* !TARGET_MIPS */ 12659 #else 12660 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 12661 #endif 12662 return ret; 12663 #endif 12664 #if defined(TARGET_NR_sync_file_range2) || \ 12665 defined(TARGET_NR_arm_sync_file_range) 12666 #if defined(TARGET_NR_sync_file_range2) 12667 case TARGET_NR_sync_file_range2: 12668 #endif 12669 #if defined(TARGET_NR_arm_sync_file_range) 12670 case TARGET_NR_arm_sync_file_range: 12671 #endif 12672 /* This is like sync_file_range but the arguments are reordered */ 12673 #if TARGET_ABI_BITS == 32 12674 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12675 target_offset64(arg5, arg6), arg2)); 12676 #else 12677 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 12678 #endif 12679 return ret; 12680 #endif 12681 #endif 12682 #if defined(TARGET_NR_signalfd4) 12683 case TARGET_NR_signalfd4: 12684 return do_signalfd4(arg1, arg2, arg4); 12685 #endif 12686 #if defined(TARGET_NR_signalfd) 12687 case TARGET_NR_signalfd: 12688 return do_signalfd4(arg1, arg2, 0); 12689 #endif 12690 #if defined(CONFIG_EPOLL) 12691 #if defined(TARGET_NR_epoll_create) 12692 case TARGET_NR_epoll_create: 12693 return get_errno(epoll_create(arg1)); 12694 #endif 12695 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12696 case TARGET_NR_epoll_create1: 12697 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 12698 #endif 12699 #if defined(TARGET_NR_epoll_ctl) 12700 case TARGET_NR_epoll_ctl: 12701 { 12702 struct epoll_event ep; 12703 struct epoll_event *epp = 0; 12704 if (arg4) { 12705 if (arg2 != EPOLL_CTL_DEL) { 12706 struct target_epoll_event *target_ep; 12707 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12708 return -TARGET_EFAULT; 12709 } 12710 ep.events = tswap32(target_ep->events); 12711 /* 12712 * The epoll_data_t union is just opaque data to the kernel, 12713 * so we transfer all 64 bits across and need not worry what 12714 * actual data type it is. 12715 */ 12716 ep.data.u64 = tswap64(target_ep->data.u64); 12717 unlock_user_struct(target_ep, arg4, 0); 12718 } 12719 /* 12720 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 12721 * non-null pointer, even though this argument is ignored. 12722 * 12723 */ 12724 epp = &ep; 12725 } 12726 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12727 } 12728 #endif 12729 12730 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12731 #if defined(TARGET_NR_epoll_wait) 12732 case TARGET_NR_epoll_wait: 12733 #endif 12734 #if defined(TARGET_NR_epoll_pwait) 12735 case TARGET_NR_epoll_pwait: 12736 #endif 12737 { 12738 struct target_epoll_event *target_ep; 12739 struct epoll_event *ep; 12740 int epfd = arg1; 12741 int maxevents = arg3; 12742 int timeout = arg4; 12743 12744 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12745 return -TARGET_EINVAL; 12746 } 12747 12748 target_ep = lock_user(VERIFY_WRITE, arg2, 12749 maxevents * sizeof(struct target_epoll_event), 1); 12750 if (!target_ep) { 12751 return -TARGET_EFAULT; 12752 } 12753 12754 ep = g_try_new(struct epoll_event, maxevents); 12755 if (!ep) { 12756 unlock_user(target_ep, arg2, 0); 12757 return -TARGET_ENOMEM; 12758 } 12759 12760 switch (num) { 12761 #if defined(TARGET_NR_epoll_pwait) 12762 case TARGET_NR_epoll_pwait: 12763 { 12764 target_sigset_t *target_set; 12765 sigset_t _set, *set = &_set; 12766 12767 if (arg5) { 12768 if (arg6 != sizeof(target_sigset_t)) { 12769 ret = -TARGET_EINVAL; 12770 break; 12771 } 12772 12773 target_set = lock_user(VERIFY_READ, arg5, 12774 sizeof(target_sigset_t), 1); 12775 if (!target_set) { 12776 ret = -TARGET_EFAULT; 12777 break; 12778 } 12779 target_to_host_sigset(set, target_set); 12780 unlock_user(target_set, arg5, 0); 12781 } else { 12782 set = NULL; 12783 } 12784 12785 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12786 set, SIGSET_T_SIZE)); 12787 break; 12788 } 12789 #endif 12790 #if defined(TARGET_NR_epoll_wait) 12791 case TARGET_NR_epoll_wait: 12792 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12793 NULL, 0)); 12794 break; 12795 #endif 12796 default: 12797 ret = -TARGET_ENOSYS; 12798 } 12799 if (!is_error(ret)) { 12800 int i; 12801 for (i = 0; i < ret; i++) { 12802 target_ep[i].events = tswap32(ep[i].events); 12803 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12804 } 12805 unlock_user(target_ep, arg2, 12806 ret * sizeof(struct target_epoll_event)); 12807 } else { 12808 unlock_user(target_ep, arg2, 0); 12809 } 12810 g_free(ep); 12811 return ret; 12812 } 12813 #endif 12814 #endif 12815 #ifdef TARGET_NR_prlimit64 12816 case TARGET_NR_prlimit64: 12817 { 12818 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12819 struct target_rlimit64 *target_rnew, *target_rold; 12820 struct host_rlimit64 rnew, rold, *rnewp = 0; 12821 int resource = target_to_host_resource(arg2); 12822 12823 if (arg3 && (resource != RLIMIT_AS && 12824 resource != RLIMIT_DATA && 12825 resource != RLIMIT_STACK)) { 12826 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12827 return -TARGET_EFAULT; 12828 } 12829 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12830 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12831 unlock_user_struct(target_rnew, arg3, 0); 12832 rnewp = &rnew; 12833 } 12834 12835 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12836 if (!is_error(ret) && arg4) { 12837 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12838 return -TARGET_EFAULT; 12839 } 12840 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12841 target_rold->rlim_max = tswap64(rold.rlim_max); 12842 unlock_user_struct(target_rold, arg4, 1); 12843 } 12844 return ret; 12845 } 12846 #endif 12847 #ifdef TARGET_NR_gethostname 12848 case TARGET_NR_gethostname: 12849 { 12850 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12851 if (name) { 12852 ret = get_errno(gethostname(name, arg2)); 12853 unlock_user(name, arg1, arg2); 12854 } else { 12855 ret = -TARGET_EFAULT; 12856 } 12857 return ret; 12858 } 12859 #endif 12860 #ifdef TARGET_NR_atomic_cmpxchg_32 12861 case TARGET_NR_atomic_cmpxchg_32: 12862 { 12863 /* should use start_exclusive from main.c */ 12864 abi_ulong mem_value; 12865 if (get_user_u32(mem_value, arg6)) { 12866 target_siginfo_t info; 12867 info.si_signo = SIGSEGV; 12868 info.si_errno = 0; 12869 info.si_code = TARGET_SEGV_MAPERR; 12870 info._sifields._sigfault._addr = arg6; 12871 queue_signal((CPUArchState *)cpu_env, info.si_signo, 12872 QEMU_SI_FAULT, &info); 12873 ret = 0xdeadbeef; 12874 12875 } 12876 if (mem_value == arg2) 12877 put_user_u32(arg1, arg6); 12878 return mem_value; 12879 } 12880 #endif 12881 #ifdef TARGET_NR_atomic_barrier 12882 case TARGET_NR_atomic_barrier: 12883 /* Like the kernel implementation and the 12884 qemu arm barrier, no-op this? */ 12885 return 0; 12886 #endif 12887 12888 #ifdef TARGET_NR_timer_create 12889 case TARGET_NR_timer_create: 12890 { 12891 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12892 12893 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12894 12895 int clkid = arg1; 12896 int timer_index = next_free_host_timer(); 12897 12898 if (timer_index < 0) { 12899 ret = -TARGET_EAGAIN; 12900 } else { 12901 timer_t *phtimer = g_posix_timers + timer_index; 12902 12903 if (arg2) { 12904 phost_sevp = &host_sevp; 12905 ret = target_to_host_sigevent(phost_sevp, arg2); 12906 if (ret != 0) { 12907 return ret; 12908 } 12909 } 12910 12911 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12912 if (ret) { 12913 phtimer = NULL; 12914 } else { 12915 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12916 return -TARGET_EFAULT; 12917 } 12918 } 12919 } 12920 return ret; 12921 } 12922 #endif 12923 12924 #ifdef TARGET_NR_timer_settime 12925 case TARGET_NR_timer_settime: 12926 { 12927 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12928 * struct itimerspec * old_value */ 12929 target_timer_t timerid = get_timer_id(arg1); 12930 12931 if (timerid < 0) { 12932 ret = timerid; 12933 } else if (arg3 == 0) { 12934 ret = -TARGET_EINVAL; 12935 } else { 12936 timer_t htimer = g_posix_timers[timerid]; 12937 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12938 12939 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12940 return -TARGET_EFAULT; 12941 } 12942 ret = get_errno( 12943 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12944 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12945 return -TARGET_EFAULT; 12946 } 12947 } 12948 return ret; 12949 } 12950 #endif 12951 12952 #ifdef TARGET_NR_timer_settime64 12953 case TARGET_NR_timer_settime64: 12954 { 12955 target_timer_t timerid = get_timer_id(arg1); 12956 12957 if (timerid < 0) { 12958 ret = timerid; 12959 } else if (arg3 == 0) { 12960 ret = -TARGET_EINVAL; 12961 } else { 12962 timer_t htimer = g_posix_timers[timerid]; 12963 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12964 12965 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 12966 return -TARGET_EFAULT; 12967 } 12968 ret = get_errno( 12969 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12970 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 12971 return -TARGET_EFAULT; 12972 } 12973 } 12974 return ret; 12975 } 12976 #endif 12977 12978 #ifdef TARGET_NR_timer_gettime 12979 case TARGET_NR_timer_gettime: 12980 { 12981 /* args: timer_t timerid, struct itimerspec *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_itimerspec(arg2, &hspec)) { 12994 ret = -TARGET_EFAULT; 12995 } 12996 } 12997 return ret; 12998 } 12999 #endif 13000 13001 #ifdef TARGET_NR_timer_gettime64 13002 case TARGET_NR_timer_gettime64: 13003 { 13004 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 13005 target_timer_t timerid = get_timer_id(arg1); 13006 13007 if (timerid < 0) { 13008 ret = timerid; 13009 } else if (!arg2) { 13010 ret = -TARGET_EFAULT; 13011 } else { 13012 timer_t htimer = g_posix_timers[timerid]; 13013 struct itimerspec hspec; 13014 ret = get_errno(timer_gettime(htimer, &hspec)); 13015 13016 if (host_to_target_itimerspec64(arg2, &hspec)) { 13017 ret = -TARGET_EFAULT; 13018 } 13019 } 13020 return ret; 13021 } 13022 #endif 13023 13024 #ifdef TARGET_NR_timer_getoverrun 13025 case TARGET_NR_timer_getoverrun: 13026 { 13027 /* args: timer_t timerid */ 13028 target_timer_t timerid = get_timer_id(arg1); 13029 13030 if (timerid < 0) { 13031 ret = timerid; 13032 } else { 13033 timer_t htimer = g_posix_timers[timerid]; 13034 ret = get_errno(timer_getoverrun(htimer)); 13035 } 13036 return ret; 13037 } 13038 #endif 13039 13040 #ifdef TARGET_NR_timer_delete 13041 case TARGET_NR_timer_delete: 13042 { 13043 /* args: timer_t timerid */ 13044 target_timer_t timerid = get_timer_id(arg1); 13045 13046 if (timerid < 0) { 13047 ret = timerid; 13048 } else { 13049 timer_t htimer = g_posix_timers[timerid]; 13050 ret = get_errno(timer_delete(htimer)); 13051 g_posix_timers[timerid] = 0; 13052 } 13053 return ret; 13054 } 13055 #endif 13056 13057 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 13058 case TARGET_NR_timerfd_create: 13059 return get_errno(timerfd_create(arg1, 13060 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 13061 #endif 13062 13063 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 13064 case TARGET_NR_timerfd_gettime: 13065 { 13066 struct itimerspec its_curr; 13067 13068 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13069 13070 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 13071 return -TARGET_EFAULT; 13072 } 13073 } 13074 return ret; 13075 #endif 13076 13077 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 13078 case TARGET_NR_timerfd_gettime64: 13079 { 13080 struct itimerspec its_curr; 13081 13082 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13083 13084 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 13085 return -TARGET_EFAULT; 13086 } 13087 } 13088 return ret; 13089 #endif 13090 13091 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 13092 case TARGET_NR_timerfd_settime: 13093 { 13094 struct itimerspec its_new, its_old, *p_new; 13095 13096 if (arg3) { 13097 if (target_to_host_itimerspec(&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_itimerspec(arg4, &its_old)) { 13108 return -TARGET_EFAULT; 13109 } 13110 } 13111 return ret; 13112 #endif 13113 13114 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 13115 case TARGET_NR_timerfd_settime64: 13116 { 13117 struct itimerspec its_new, its_old, *p_new; 13118 13119 if (arg3) { 13120 if (target_to_host_itimerspec64(&its_new, arg3)) { 13121 return -TARGET_EFAULT; 13122 } 13123 p_new = &its_new; 13124 } else { 13125 p_new = NULL; 13126 } 13127 13128 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13129 13130 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 13131 return -TARGET_EFAULT; 13132 } 13133 } 13134 return ret; 13135 #endif 13136 13137 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 13138 case TARGET_NR_ioprio_get: 13139 return get_errno(ioprio_get(arg1, arg2)); 13140 #endif 13141 13142 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 13143 case TARGET_NR_ioprio_set: 13144 return get_errno(ioprio_set(arg1, arg2, arg3)); 13145 #endif 13146 13147 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 13148 case TARGET_NR_setns: 13149 return get_errno(setns(arg1, arg2)); 13150 #endif 13151 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 13152 case TARGET_NR_unshare: 13153 return get_errno(unshare(arg1)); 13154 #endif 13155 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 13156 case TARGET_NR_kcmp: 13157 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 13158 #endif 13159 #ifdef TARGET_NR_swapcontext 13160 case TARGET_NR_swapcontext: 13161 /* PowerPC specific. */ 13162 return do_swapcontext(cpu_env, arg1, arg2, arg3); 13163 #endif 13164 #ifdef TARGET_NR_memfd_create 13165 case TARGET_NR_memfd_create: 13166 p = lock_user_string(arg1); 13167 if (!p) { 13168 return -TARGET_EFAULT; 13169 } 13170 ret = get_errno(memfd_create(p, arg2)); 13171 fd_trans_unregister(ret); 13172 unlock_user(p, arg1, 0); 13173 return ret; 13174 #endif 13175 #if defined TARGET_NR_membarrier && defined __NR_membarrier 13176 case TARGET_NR_membarrier: 13177 return get_errno(membarrier(arg1, arg2)); 13178 #endif 13179 13180 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 13181 case TARGET_NR_copy_file_range: 13182 { 13183 loff_t inoff, outoff; 13184 loff_t *pinoff = NULL, *poutoff = NULL; 13185 13186 if (arg2) { 13187 if (get_user_u64(inoff, arg2)) { 13188 return -TARGET_EFAULT; 13189 } 13190 pinoff = &inoff; 13191 } 13192 if (arg4) { 13193 if (get_user_u64(outoff, arg4)) { 13194 return -TARGET_EFAULT; 13195 } 13196 poutoff = &outoff; 13197 } 13198 /* Do not sign-extend the count parameter. */ 13199 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 13200 (abi_ulong)arg5, arg6)); 13201 if (!is_error(ret) && ret > 0) { 13202 if (arg2) { 13203 if (put_user_u64(inoff, arg2)) { 13204 return -TARGET_EFAULT; 13205 } 13206 } 13207 if (arg4) { 13208 if (put_user_u64(outoff, arg4)) { 13209 return -TARGET_EFAULT; 13210 } 13211 } 13212 } 13213 } 13214 return ret; 13215 #endif 13216 13217 default: 13218 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 13219 return -TARGET_ENOSYS; 13220 } 13221 return ret; 13222 } 13223 13224 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 13225 abi_long arg2, abi_long arg3, abi_long arg4, 13226 abi_long arg5, abi_long arg6, abi_long arg7, 13227 abi_long arg8) 13228 { 13229 CPUState *cpu = env_cpu(cpu_env); 13230 abi_long ret; 13231 13232 #ifdef DEBUG_ERESTARTSYS 13233 /* Debug-only code for exercising the syscall-restart code paths 13234 * in the per-architecture cpu main loops: restart every syscall 13235 * the guest makes once before letting it through. 13236 */ 13237 { 13238 static bool flag; 13239 flag = !flag; 13240 if (flag) { 13241 return -TARGET_ERESTARTSYS; 13242 } 13243 } 13244 #endif 13245 13246 record_syscall_start(cpu, num, arg1, 13247 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13248 13249 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13250 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13251 } 13252 13253 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13254 arg5, arg6, arg7, arg8); 13255 13256 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13257 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13258 arg3, arg4, arg5, arg6); 13259 } 13260 13261 record_syscall_return(cpu, num, ret); 13262 return ret; 13263 } 13264