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 const 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 CPUState *cpu = env_cpu(cpu_env); 4607 abi_long raddr; 4608 void *host_raddr; 4609 struct shmid_ds shm_info; 4610 int i,ret; 4611 abi_ulong shmlba; 4612 4613 /* shmat pointers are always untagged */ 4614 4615 /* find out the length of the shared memory segment */ 4616 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4617 if (is_error(ret)) { 4618 /* can't get length, bail out */ 4619 return ret; 4620 } 4621 4622 shmlba = target_shmlba(cpu_env); 4623 4624 if (shmaddr & (shmlba - 1)) { 4625 if (shmflg & SHM_RND) { 4626 shmaddr &= ~(shmlba - 1); 4627 } else { 4628 return -TARGET_EINVAL; 4629 } 4630 } 4631 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { 4632 return -TARGET_EINVAL; 4633 } 4634 4635 mmap_lock(); 4636 4637 /* 4638 * We're mapping shared memory, so ensure we generate code for parallel 4639 * execution and flush old translations. This will work up to the level 4640 * supported by the host -- anything that requires EXCP_ATOMIC will not 4641 * be atomic with respect to an external process. 4642 */ 4643 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 4644 cpu->tcg_cflags |= CF_PARALLEL; 4645 tb_flush(cpu); 4646 } 4647 4648 if (shmaddr) 4649 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); 4650 else { 4651 abi_ulong mmap_start; 4652 4653 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4654 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4655 4656 if (mmap_start == -1) { 4657 errno = ENOMEM; 4658 host_raddr = (void *)-1; 4659 } else 4660 host_raddr = shmat(shmid, g2h_untagged(mmap_start), 4661 shmflg | SHM_REMAP); 4662 } 4663 4664 if (host_raddr == (void *)-1) { 4665 mmap_unlock(); 4666 return get_errno((long)host_raddr); 4667 } 4668 raddr=h2g((unsigned long)host_raddr); 4669 4670 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4671 PAGE_VALID | PAGE_RESET | PAGE_READ | 4672 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); 4673 4674 for (i = 0; i < N_SHM_REGIONS; i++) { 4675 if (!shm_regions[i].in_use) { 4676 shm_regions[i].in_use = true; 4677 shm_regions[i].start = raddr; 4678 shm_regions[i].size = shm_info.shm_segsz; 4679 break; 4680 } 4681 } 4682 4683 mmap_unlock(); 4684 return raddr; 4685 4686 } 4687 4688 static inline abi_long do_shmdt(abi_ulong shmaddr) 4689 { 4690 int i; 4691 abi_long rv; 4692 4693 /* shmdt pointers are always untagged */ 4694 4695 mmap_lock(); 4696 4697 for (i = 0; i < N_SHM_REGIONS; ++i) { 4698 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4699 shm_regions[i].in_use = false; 4700 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4701 break; 4702 } 4703 } 4704 rv = get_errno(shmdt(g2h_untagged(shmaddr))); 4705 4706 mmap_unlock(); 4707 4708 return rv; 4709 } 4710 4711 #ifdef TARGET_NR_ipc 4712 /* ??? This only works with linear mappings. */ 4713 /* do_ipc() must return target values and target errnos. */ 4714 static abi_long do_ipc(CPUArchState *cpu_env, 4715 unsigned int call, abi_long first, 4716 abi_long second, abi_long third, 4717 abi_long ptr, abi_long fifth) 4718 { 4719 int version; 4720 abi_long ret = 0; 4721 4722 version = call >> 16; 4723 call &= 0xffff; 4724 4725 switch (call) { 4726 case IPCOP_semop: 4727 ret = do_semtimedop(first, ptr, second, 0, false); 4728 break; 4729 case IPCOP_semtimedop: 4730 /* 4731 * The s390 sys_ipc variant has only five parameters instead of six 4732 * (as for default variant) and the only difference is the handling of 4733 * SEMTIMEDOP where on s390 the third parameter is used as a pointer 4734 * to a struct timespec where the generic variant uses fifth parameter. 4735 */ 4736 #if defined(TARGET_S390X) 4737 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64); 4738 #else 4739 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64); 4740 #endif 4741 break; 4742 4743 case IPCOP_semget: 4744 ret = get_errno(semget(first, second, third)); 4745 break; 4746 4747 case IPCOP_semctl: { 4748 /* The semun argument to semctl is passed by value, so dereference the 4749 * ptr argument. */ 4750 abi_ulong atptr; 4751 get_user_ual(atptr, ptr); 4752 ret = do_semctl(first, second, third, atptr); 4753 break; 4754 } 4755 4756 case IPCOP_msgget: 4757 ret = get_errno(msgget(first, second)); 4758 break; 4759 4760 case IPCOP_msgsnd: 4761 ret = do_msgsnd(first, ptr, second, third); 4762 break; 4763 4764 case IPCOP_msgctl: 4765 ret = do_msgctl(first, second, ptr); 4766 break; 4767 4768 case IPCOP_msgrcv: 4769 switch (version) { 4770 case 0: 4771 { 4772 struct target_ipc_kludge { 4773 abi_long msgp; 4774 abi_long msgtyp; 4775 } *tmp; 4776 4777 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4778 ret = -TARGET_EFAULT; 4779 break; 4780 } 4781 4782 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4783 4784 unlock_user_struct(tmp, ptr, 0); 4785 break; 4786 } 4787 default: 4788 ret = do_msgrcv(first, ptr, second, fifth, third); 4789 } 4790 break; 4791 4792 case IPCOP_shmat: 4793 switch (version) { 4794 default: 4795 { 4796 abi_ulong raddr; 4797 raddr = do_shmat(cpu_env, first, ptr, second); 4798 if (is_error(raddr)) 4799 return get_errno(raddr); 4800 if (put_user_ual(raddr, third)) 4801 return -TARGET_EFAULT; 4802 break; 4803 } 4804 case 1: 4805 ret = -TARGET_EINVAL; 4806 break; 4807 } 4808 break; 4809 case IPCOP_shmdt: 4810 ret = do_shmdt(ptr); 4811 break; 4812 4813 case IPCOP_shmget: 4814 /* IPC_* flag values are the same on all linux platforms */ 4815 ret = get_errno(shmget(first, second, third)); 4816 break; 4817 4818 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4819 case IPCOP_shmctl: 4820 ret = do_shmctl(first, second, ptr); 4821 break; 4822 default: 4823 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4824 call, version); 4825 ret = -TARGET_ENOSYS; 4826 break; 4827 } 4828 return ret; 4829 } 4830 #endif 4831 4832 /* kernel structure types definitions */ 4833 4834 #define STRUCT(name, ...) STRUCT_ ## name, 4835 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4836 enum { 4837 #include "syscall_types.h" 4838 STRUCT_MAX 4839 }; 4840 #undef STRUCT 4841 #undef STRUCT_SPECIAL 4842 4843 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4844 #define STRUCT_SPECIAL(name) 4845 #include "syscall_types.h" 4846 #undef STRUCT 4847 #undef STRUCT_SPECIAL 4848 4849 #define MAX_STRUCT_SIZE 4096 4850 4851 #ifdef CONFIG_FIEMAP 4852 /* So fiemap access checks don't overflow on 32 bit systems. 4853 * This is very slightly smaller than the limit imposed by 4854 * the underlying kernel. 4855 */ 4856 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4857 / sizeof(struct fiemap_extent)) 4858 4859 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4860 int fd, int cmd, abi_long arg) 4861 { 4862 /* The parameter for this ioctl is a struct fiemap followed 4863 * by an array of struct fiemap_extent whose size is set 4864 * in fiemap->fm_extent_count. The array is filled in by the 4865 * ioctl. 4866 */ 4867 int target_size_in, target_size_out; 4868 struct fiemap *fm; 4869 const argtype *arg_type = ie->arg_type; 4870 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4871 void *argptr, *p; 4872 abi_long ret; 4873 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4874 uint32_t outbufsz; 4875 int free_fm = 0; 4876 4877 assert(arg_type[0] == TYPE_PTR); 4878 assert(ie->access == IOC_RW); 4879 arg_type++; 4880 target_size_in = thunk_type_size(arg_type, 0); 4881 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4882 if (!argptr) { 4883 return -TARGET_EFAULT; 4884 } 4885 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4886 unlock_user(argptr, arg, 0); 4887 fm = (struct fiemap *)buf_temp; 4888 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4889 return -TARGET_EINVAL; 4890 } 4891 4892 outbufsz = sizeof (*fm) + 4893 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4894 4895 if (outbufsz > MAX_STRUCT_SIZE) { 4896 /* We can't fit all the extents into the fixed size buffer. 4897 * Allocate one that is large enough and use it instead. 4898 */ 4899 fm = g_try_malloc(outbufsz); 4900 if (!fm) { 4901 return -TARGET_ENOMEM; 4902 } 4903 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4904 free_fm = 1; 4905 } 4906 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4907 if (!is_error(ret)) { 4908 target_size_out = target_size_in; 4909 /* An extent_count of 0 means we were only counting the extents 4910 * so there are no structs to copy 4911 */ 4912 if (fm->fm_extent_count != 0) { 4913 target_size_out += fm->fm_mapped_extents * extent_size; 4914 } 4915 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4916 if (!argptr) { 4917 ret = -TARGET_EFAULT; 4918 } else { 4919 /* Convert the struct fiemap */ 4920 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4921 if (fm->fm_extent_count != 0) { 4922 p = argptr + target_size_in; 4923 /* ...and then all the struct fiemap_extents */ 4924 for (i = 0; i < fm->fm_mapped_extents; i++) { 4925 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4926 THUNK_TARGET); 4927 p += extent_size; 4928 } 4929 } 4930 unlock_user(argptr, arg, target_size_out); 4931 } 4932 } 4933 if (free_fm) { 4934 g_free(fm); 4935 } 4936 return ret; 4937 } 4938 #endif 4939 4940 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4941 int fd, int cmd, abi_long arg) 4942 { 4943 const argtype *arg_type = ie->arg_type; 4944 int target_size; 4945 void *argptr; 4946 int ret; 4947 struct ifconf *host_ifconf; 4948 uint32_t outbufsz; 4949 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4950 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) }; 4951 int target_ifreq_size; 4952 int nb_ifreq; 4953 int free_buf = 0; 4954 int i; 4955 int target_ifc_len; 4956 abi_long target_ifc_buf; 4957 int host_ifc_len; 4958 char *host_ifc_buf; 4959 4960 assert(arg_type[0] == TYPE_PTR); 4961 assert(ie->access == IOC_RW); 4962 4963 arg_type++; 4964 target_size = thunk_type_size(arg_type, 0); 4965 4966 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4967 if (!argptr) 4968 return -TARGET_EFAULT; 4969 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4970 unlock_user(argptr, arg, 0); 4971 4972 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4973 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4974 target_ifreq_size = thunk_type_size(ifreq_max_type, 0); 4975 4976 if (target_ifc_buf != 0) { 4977 target_ifc_len = host_ifconf->ifc_len; 4978 nb_ifreq = target_ifc_len / target_ifreq_size; 4979 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4980 4981 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4982 if (outbufsz > MAX_STRUCT_SIZE) { 4983 /* 4984 * We can't fit all the extents into the fixed size buffer. 4985 * Allocate one that is large enough and use it instead. 4986 */ 4987 host_ifconf = malloc(outbufsz); 4988 if (!host_ifconf) { 4989 return -TARGET_ENOMEM; 4990 } 4991 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4992 free_buf = 1; 4993 } 4994 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4995 4996 host_ifconf->ifc_len = host_ifc_len; 4997 } else { 4998 host_ifc_buf = NULL; 4999 } 5000 host_ifconf->ifc_buf = host_ifc_buf; 5001 5002 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 5003 if (!is_error(ret)) { 5004 /* convert host ifc_len to target ifc_len */ 5005 5006 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 5007 target_ifc_len = nb_ifreq * target_ifreq_size; 5008 host_ifconf->ifc_len = target_ifc_len; 5009 5010 /* restore target ifc_buf */ 5011 5012 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 5013 5014 /* copy struct ifconf to target user */ 5015 5016 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5017 if (!argptr) 5018 return -TARGET_EFAULT; 5019 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 5020 unlock_user(argptr, arg, target_size); 5021 5022 if (target_ifc_buf != 0) { 5023 /* copy ifreq[] to target user */ 5024 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 5025 for (i = 0; i < nb_ifreq ; i++) { 5026 thunk_convert(argptr + i * target_ifreq_size, 5027 host_ifc_buf + i * sizeof(struct ifreq), 5028 ifreq_arg_type, THUNK_TARGET); 5029 } 5030 unlock_user(argptr, target_ifc_buf, target_ifc_len); 5031 } 5032 } 5033 5034 if (free_buf) { 5035 free(host_ifconf); 5036 } 5037 5038 return ret; 5039 } 5040 5041 #if defined(CONFIG_USBFS) 5042 #if HOST_LONG_BITS > 64 5043 #error USBDEVFS thunks do not support >64 bit hosts yet. 5044 #endif 5045 struct live_urb { 5046 uint64_t target_urb_adr; 5047 uint64_t target_buf_adr; 5048 char *target_buf_ptr; 5049 struct usbdevfs_urb host_urb; 5050 }; 5051 5052 static GHashTable *usbdevfs_urb_hashtable(void) 5053 { 5054 static GHashTable *urb_hashtable; 5055 5056 if (!urb_hashtable) { 5057 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 5058 } 5059 return urb_hashtable; 5060 } 5061 5062 static void urb_hashtable_insert(struct live_urb *urb) 5063 { 5064 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 5065 g_hash_table_insert(urb_hashtable, urb, urb); 5066 } 5067 5068 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 5069 { 5070 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 5071 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 5072 } 5073 5074 static void urb_hashtable_remove(struct live_urb *urb) 5075 { 5076 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 5077 g_hash_table_remove(urb_hashtable, urb); 5078 } 5079 5080 static abi_long 5081 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 5082 int fd, int cmd, abi_long arg) 5083 { 5084 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 5085 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 5086 struct live_urb *lurb; 5087 void *argptr; 5088 uint64_t hurb; 5089 int target_size; 5090 uintptr_t target_urb_adr; 5091 abi_long ret; 5092 5093 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 5094 5095 memset(buf_temp, 0, sizeof(uint64_t)); 5096 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5097 if (is_error(ret)) { 5098 return ret; 5099 } 5100 5101 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 5102 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 5103 if (!lurb->target_urb_adr) { 5104 return -TARGET_EFAULT; 5105 } 5106 urb_hashtable_remove(lurb); 5107 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 5108 lurb->host_urb.buffer_length); 5109 lurb->target_buf_ptr = NULL; 5110 5111 /* restore the guest buffer pointer */ 5112 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 5113 5114 /* update the guest urb struct */ 5115 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 5116 if (!argptr) { 5117 g_free(lurb); 5118 return -TARGET_EFAULT; 5119 } 5120 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 5121 unlock_user(argptr, lurb->target_urb_adr, target_size); 5122 5123 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 5124 /* write back the urb handle */ 5125 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5126 if (!argptr) { 5127 g_free(lurb); 5128 return -TARGET_EFAULT; 5129 } 5130 5131 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 5132 target_urb_adr = lurb->target_urb_adr; 5133 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 5134 unlock_user(argptr, arg, target_size); 5135 5136 g_free(lurb); 5137 return ret; 5138 } 5139 5140 static abi_long 5141 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 5142 uint8_t *buf_temp __attribute__((unused)), 5143 int fd, int cmd, abi_long arg) 5144 { 5145 struct live_urb *lurb; 5146 5147 /* map target address back to host URB with metadata. */ 5148 lurb = urb_hashtable_lookup(arg); 5149 if (!lurb) { 5150 return -TARGET_EFAULT; 5151 } 5152 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5153 } 5154 5155 static abi_long 5156 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 5157 int fd, int cmd, abi_long arg) 5158 { 5159 const argtype *arg_type = ie->arg_type; 5160 int target_size; 5161 abi_long ret; 5162 void *argptr; 5163 int rw_dir; 5164 struct live_urb *lurb; 5165 5166 /* 5167 * each submitted URB needs to map to a unique ID for the 5168 * kernel, and that unique ID needs to be a pointer to 5169 * host memory. hence, we need to malloc for each URB. 5170 * isochronous transfers have a variable length struct. 5171 */ 5172 arg_type++; 5173 target_size = thunk_type_size(arg_type, THUNK_TARGET); 5174 5175 /* construct host copy of urb and metadata */ 5176 lurb = g_try_malloc0(sizeof(struct live_urb)); 5177 if (!lurb) { 5178 return -TARGET_ENOMEM; 5179 } 5180 5181 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5182 if (!argptr) { 5183 g_free(lurb); 5184 return -TARGET_EFAULT; 5185 } 5186 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 5187 unlock_user(argptr, arg, 0); 5188 5189 lurb->target_urb_adr = arg; 5190 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 5191 5192 /* buffer space used depends on endpoint type so lock the entire buffer */ 5193 /* control type urbs should check the buffer contents for true direction */ 5194 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 5195 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 5196 lurb->host_urb.buffer_length, 1); 5197 if (lurb->target_buf_ptr == NULL) { 5198 g_free(lurb); 5199 return -TARGET_EFAULT; 5200 } 5201 5202 /* update buffer pointer in host copy */ 5203 lurb->host_urb.buffer = lurb->target_buf_ptr; 5204 5205 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5206 if (is_error(ret)) { 5207 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 5208 g_free(lurb); 5209 } else { 5210 urb_hashtable_insert(lurb); 5211 } 5212 5213 return ret; 5214 } 5215 #endif /* CONFIG_USBFS */ 5216 5217 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5218 int cmd, abi_long arg) 5219 { 5220 void *argptr; 5221 struct dm_ioctl *host_dm; 5222 abi_long guest_data; 5223 uint32_t guest_data_size; 5224 int target_size; 5225 const argtype *arg_type = ie->arg_type; 5226 abi_long ret; 5227 void *big_buf = NULL; 5228 char *host_data; 5229 5230 arg_type++; 5231 target_size = thunk_type_size(arg_type, 0); 5232 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5233 if (!argptr) { 5234 ret = -TARGET_EFAULT; 5235 goto out; 5236 } 5237 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5238 unlock_user(argptr, arg, 0); 5239 5240 /* buf_temp is too small, so fetch things into a bigger buffer */ 5241 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5242 memcpy(big_buf, buf_temp, target_size); 5243 buf_temp = big_buf; 5244 host_dm = big_buf; 5245 5246 guest_data = arg + host_dm->data_start; 5247 if ((guest_data - arg) < 0) { 5248 ret = -TARGET_EINVAL; 5249 goto out; 5250 } 5251 guest_data_size = host_dm->data_size - host_dm->data_start; 5252 host_data = (char*)host_dm + host_dm->data_start; 5253 5254 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5255 if (!argptr) { 5256 ret = -TARGET_EFAULT; 5257 goto out; 5258 } 5259 5260 switch (ie->host_cmd) { 5261 case DM_REMOVE_ALL: 5262 case DM_LIST_DEVICES: 5263 case DM_DEV_CREATE: 5264 case DM_DEV_REMOVE: 5265 case DM_DEV_SUSPEND: 5266 case DM_DEV_STATUS: 5267 case DM_DEV_WAIT: 5268 case DM_TABLE_STATUS: 5269 case DM_TABLE_CLEAR: 5270 case DM_TABLE_DEPS: 5271 case DM_LIST_VERSIONS: 5272 /* no input data */ 5273 break; 5274 case DM_DEV_RENAME: 5275 case DM_DEV_SET_GEOMETRY: 5276 /* data contains only strings */ 5277 memcpy(host_data, argptr, guest_data_size); 5278 break; 5279 case DM_TARGET_MSG: 5280 memcpy(host_data, argptr, guest_data_size); 5281 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5282 break; 5283 case DM_TABLE_LOAD: 5284 { 5285 void *gspec = argptr; 5286 void *cur_data = host_data; 5287 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5288 int spec_size = thunk_type_size(arg_type, 0); 5289 int i; 5290 5291 for (i = 0; i < host_dm->target_count; i++) { 5292 struct dm_target_spec *spec = cur_data; 5293 uint32_t next; 5294 int slen; 5295 5296 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5297 slen = strlen((char*)gspec + spec_size) + 1; 5298 next = spec->next; 5299 spec->next = sizeof(*spec) + slen; 5300 strcpy((char*)&spec[1], gspec + spec_size); 5301 gspec += next; 5302 cur_data += spec->next; 5303 } 5304 break; 5305 } 5306 default: 5307 ret = -TARGET_EINVAL; 5308 unlock_user(argptr, guest_data, 0); 5309 goto out; 5310 } 5311 unlock_user(argptr, guest_data, 0); 5312 5313 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5314 if (!is_error(ret)) { 5315 guest_data = arg + host_dm->data_start; 5316 guest_data_size = host_dm->data_size - host_dm->data_start; 5317 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5318 switch (ie->host_cmd) { 5319 case DM_REMOVE_ALL: 5320 case DM_DEV_CREATE: 5321 case DM_DEV_REMOVE: 5322 case DM_DEV_RENAME: 5323 case DM_DEV_SUSPEND: 5324 case DM_DEV_STATUS: 5325 case DM_TABLE_LOAD: 5326 case DM_TABLE_CLEAR: 5327 case DM_TARGET_MSG: 5328 case DM_DEV_SET_GEOMETRY: 5329 /* no return data */ 5330 break; 5331 case DM_LIST_DEVICES: 5332 { 5333 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5334 uint32_t remaining_data = guest_data_size; 5335 void *cur_data = argptr; 5336 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5337 int nl_size = 12; /* can't use thunk_size due to alignment */ 5338 5339 while (1) { 5340 uint32_t next = nl->next; 5341 if (next) { 5342 nl->next = nl_size + (strlen(nl->name) + 1); 5343 } 5344 if (remaining_data < nl->next) { 5345 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5346 break; 5347 } 5348 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5349 strcpy(cur_data + nl_size, nl->name); 5350 cur_data += nl->next; 5351 remaining_data -= nl->next; 5352 if (!next) { 5353 break; 5354 } 5355 nl = (void*)nl + next; 5356 } 5357 break; 5358 } 5359 case DM_DEV_WAIT: 5360 case DM_TABLE_STATUS: 5361 { 5362 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5363 void *cur_data = argptr; 5364 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5365 int spec_size = thunk_type_size(arg_type, 0); 5366 int i; 5367 5368 for (i = 0; i < host_dm->target_count; i++) { 5369 uint32_t next = spec->next; 5370 int slen = strlen((char*)&spec[1]) + 1; 5371 spec->next = (cur_data - argptr) + spec_size + slen; 5372 if (guest_data_size < spec->next) { 5373 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5374 break; 5375 } 5376 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5377 strcpy(cur_data + spec_size, (char*)&spec[1]); 5378 cur_data = argptr + spec->next; 5379 spec = (void*)host_dm + host_dm->data_start + next; 5380 } 5381 break; 5382 } 5383 case DM_TABLE_DEPS: 5384 { 5385 void *hdata = (void*)host_dm + host_dm->data_start; 5386 int count = *(uint32_t*)hdata; 5387 uint64_t *hdev = hdata + 8; 5388 uint64_t *gdev = argptr + 8; 5389 int i; 5390 5391 *(uint32_t*)argptr = tswap32(count); 5392 for (i = 0; i < count; i++) { 5393 *gdev = tswap64(*hdev); 5394 gdev++; 5395 hdev++; 5396 } 5397 break; 5398 } 5399 case DM_LIST_VERSIONS: 5400 { 5401 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5402 uint32_t remaining_data = guest_data_size; 5403 void *cur_data = argptr; 5404 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5405 int vers_size = thunk_type_size(arg_type, 0); 5406 5407 while (1) { 5408 uint32_t next = vers->next; 5409 if (next) { 5410 vers->next = vers_size + (strlen(vers->name) + 1); 5411 } 5412 if (remaining_data < vers->next) { 5413 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5414 break; 5415 } 5416 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5417 strcpy(cur_data + vers_size, vers->name); 5418 cur_data += vers->next; 5419 remaining_data -= vers->next; 5420 if (!next) { 5421 break; 5422 } 5423 vers = (void*)vers + next; 5424 } 5425 break; 5426 } 5427 default: 5428 unlock_user(argptr, guest_data, 0); 5429 ret = -TARGET_EINVAL; 5430 goto out; 5431 } 5432 unlock_user(argptr, guest_data, guest_data_size); 5433 5434 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5435 if (!argptr) { 5436 ret = -TARGET_EFAULT; 5437 goto out; 5438 } 5439 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5440 unlock_user(argptr, arg, target_size); 5441 } 5442 out: 5443 g_free(big_buf); 5444 return ret; 5445 } 5446 5447 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5448 int cmd, abi_long arg) 5449 { 5450 void *argptr; 5451 int target_size; 5452 const argtype *arg_type = ie->arg_type; 5453 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5454 abi_long ret; 5455 5456 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5457 struct blkpg_partition host_part; 5458 5459 /* Read and convert blkpg */ 5460 arg_type++; 5461 target_size = thunk_type_size(arg_type, 0); 5462 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5463 if (!argptr) { 5464 ret = -TARGET_EFAULT; 5465 goto out; 5466 } 5467 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5468 unlock_user(argptr, arg, 0); 5469 5470 switch (host_blkpg->op) { 5471 case BLKPG_ADD_PARTITION: 5472 case BLKPG_DEL_PARTITION: 5473 /* payload is struct blkpg_partition */ 5474 break; 5475 default: 5476 /* Unknown opcode */ 5477 ret = -TARGET_EINVAL; 5478 goto out; 5479 } 5480 5481 /* Read and convert blkpg->data */ 5482 arg = (abi_long)(uintptr_t)host_blkpg->data; 5483 target_size = thunk_type_size(part_arg_type, 0); 5484 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5485 if (!argptr) { 5486 ret = -TARGET_EFAULT; 5487 goto out; 5488 } 5489 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5490 unlock_user(argptr, arg, 0); 5491 5492 /* Swizzle the data pointer to our local copy and call! */ 5493 host_blkpg->data = &host_part; 5494 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5495 5496 out: 5497 return ret; 5498 } 5499 5500 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5501 int fd, int cmd, abi_long arg) 5502 { 5503 const argtype *arg_type = ie->arg_type; 5504 const StructEntry *se; 5505 const argtype *field_types; 5506 const int *dst_offsets, *src_offsets; 5507 int target_size; 5508 void *argptr; 5509 abi_ulong *target_rt_dev_ptr = NULL; 5510 unsigned long *host_rt_dev_ptr = NULL; 5511 abi_long ret; 5512 int i; 5513 5514 assert(ie->access == IOC_W); 5515 assert(*arg_type == TYPE_PTR); 5516 arg_type++; 5517 assert(*arg_type == TYPE_STRUCT); 5518 target_size = thunk_type_size(arg_type, 0); 5519 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5520 if (!argptr) { 5521 return -TARGET_EFAULT; 5522 } 5523 arg_type++; 5524 assert(*arg_type == (int)STRUCT_rtentry); 5525 se = struct_entries + *arg_type++; 5526 assert(se->convert[0] == NULL); 5527 /* convert struct here to be able to catch rt_dev string */ 5528 field_types = se->field_types; 5529 dst_offsets = se->field_offsets[THUNK_HOST]; 5530 src_offsets = se->field_offsets[THUNK_TARGET]; 5531 for (i = 0; i < se->nb_fields; i++) { 5532 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5533 assert(*field_types == TYPE_PTRVOID); 5534 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5535 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5536 if (*target_rt_dev_ptr != 0) { 5537 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5538 tswapal(*target_rt_dev_ptr)); 5539 if (!*host_rt_dev_ptr) { 5540 unlock_user(argptr, arg, 0); 5541 return -TARGET_EFAULT; 5542 } 5543 } else { 5544 *host_rt_dev_ptr = 0; 5545 } 5546 field_types++; 5547 continue; 5548 } 5549 field_types = thunk_convert(buf_temp + dst_offsets[i], 5550 argptr + src_offsets[i], 5551 field_types, THUNK_HOST); 5552 } 5553 unlock_user(argptr, arg, 0); 5554 5555 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5556 5557 assert(host_rt_dev_ptr != NULL); 5558 assert(target_rt_dev_ptr != NULL); 5559 if (*host_rt_dev_ptr != 0) { 5560 unlock_user((void *)*host_rt_dev_ptr, 5561 *target_rt_dev_ptr, 0); 5562 } 5563 return ret; 5564 } 5565 5566 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5567 int fd, int cmd, abi_long arg) 5568 { 5569 int sig = target_to_host_signal(arg); 5570 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5571 } 5572 5573 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5574 int fd, int cmd, abi_long arg) 5575 { 5576 struct timeval tv; 5577 abi_long ret; 5578 5579 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5580 if (is_error(ret)) { 5581 return ret; 5582 } 5583 5584 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5585 if (copy_to_user_timeval(arg, &tv)) { 5586 return -TARGET_EFAULT; 5587 } 5588 } else { 5589 if (copy_to_user_timeval64(arg, &tv)) { 5590 return -TARGET_EFAULT; 5591 } 5592 } 5593 5594 return ret; 5595 } 5596 5597 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5598 int fd, int cmd, abi_long arg) 5599 { 5600 struct timespec ts; 5601 abi_long ret; 5602 5603 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5604 if (is_error(ret)) { 5605 return ret; 5606 } 5607 5608 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5609 if (host_to_target_timespec(arg, &ts)) { 5610 return -TARGET_EFAULT; 5611 } 5612 } else{ 5613 if (host_to_target_timespec64(arg, &ts)) { 5614 return -TARGET_EFAULT; 5615 } 5616 } 5617 5618 return ret; 5619 } 5620 5621 #ifdef TIOCGPTPEER 5622 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5623 int fd, int cmd, abi_long arg) 5624 { 5625 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5626 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5627 } 5628 #endif 5629 5630 #ifdef HAVE_DRM_H 5631 5632 static void unlock_drm_version(struct drm_version *host_ver, 5633 struct target_drm_version *target_ver, 5634 bool copy) 5635 { 5636 unlock_user(host_ver->name, target_ver->name, 5637 copy ? host_ver->name_len : 0); 5638 unlock_user(host_ver->date, target_ver->date, 5639 copy ? host_ver->date_len : 0); 5640 unlock_user(host_ver->desc, target_ver->desc, 5641 copy ? host_ver->desc_len : 0); 5642 } 5643 5644 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, 5645 struct target_drm_version *target_ver) 5646 { 5647 memset(host_ver, 0, sizeof(*host_ver)); 5648 5649 __get_user(host_ver->name_len, &target_ver->name_len); 5650 if (host_ver->name_len) { 5651 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name, 5652 target_ver->name_len, 0); 5653 if (!host_ver->name) { 5654 return -EFAULT; 5655 } 5656 } 5657 5658 __get_user(host_ver->date_len, &target_ver->date_len); 5659 if (host_ver->date_len) { 5660 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date, 5661 target_ver->date_len, 0); 5662 if (!host_ver->date) { 5663 goto err; 5664 } 5665 } 5666 5667 __get_user(host_ver->desc_len, &target_ver->desc_len); 5668 if (host_ver->desc_len) { 5669 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc, 5670 target_ver->desc_len, 0); 5671 if (!host_ver->desc) { 5672 goto err; 5673 } 5674 } 5675 5676 return 0; 5677 err: 5678 unlock_drm_version(host_ver, target_ver, false); 5679 return -EFAULT; 5680 } 5681 5682 static inline void host_to_target_drmversion( 5683 struct target_drm_version *target_ver, 5684 struct drm_version *host_ver) 5685 { 5686 __put_user(host_ver->version_major, &target_ver->version_major); 5687 __put_user(host_ver->version_minor, &target_ver->version_minor); 5688 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel); 5689 __put_user(host_ver->name_len, &target_ver->name_len); 5690 __put_user(host_ver->date_len, &target_ver->date_len); 5691 __put_user(host_ver->desc_len, &target_ver->desc_len); 5692 unlock_drm_version(host_ver, target_ver, true); 5693 } 5694 5695 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, 5696 int fd, int cmd, abi_long arg) 5697 { 5698 struct drm_version *ver; 5699 struct target_drm_version *target_ver; 5700 abi_long ret; 5701 5702 switch (ie->host_cmd) { 5703 case DRM_IOCTL_VERSION: 5704 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) { 5705 return -TARGET_EFAULT; 5706 } 5707 ver = (struct drm_version *)buf_temp; 5708 ret = target_to_host_drmversion(ver, target_ver); 5709 if (!is_error(ret)) { 5710 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); 5711 if (is_error(ret)) { 5712 unlock_drm_version(ver, target_ver, false); 5713 } else { 5714 host_to_target_drmversion(target_ver, ver); 5715 } 5716 } 5717 unlock_user_struct(target_ver, arg, 0); 5718 return ret; 5719 } 5720 return -TARGET_ENOSYS; 5721 } 5722 5723 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie, 5724 struct drm_i915_getparam *gparam, 5725 int fd, abi_long arg) 5726 { 5727 abi_long ret; 5728 int value; 5729 struct target_drm_i915_getparam *target_gparam; 5730 5731 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) { 5732 return -TARGET_EFAULT; 5733 } 5734 5735 __get_user(gparam->param, &target_gparam->param); 5736 gparam->value = &value; 5737 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam)); 5738 put_user_s32(value, target_gparam->value); 5739 5740 unlock_user_struct(target_gparam, arg, 0); 5741 return ret; 5742 } 5743 5744 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp, 5745 int fd, int cmd, abi_long arg) 5746 { 5747 switch (ie->host_cmd) { 5748 case DRM_IOCTL_I915_GETPARAM: 5749 return do_ioctl_drm_i915_getparam(ie, 5750 (struct drm_i915_getparam *)buf_temp, 5751 fd, arg); 5752 default: 5753 return -TARGET_ENOSYS; 5754 } 5755 } 5756 5757 #endif 5758 5759 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp, 5760 int fd, int cmd, abi_long arg) 5761 { 5762 struct tun_filter *filter = (struct tun_filter *)buf_temp; 5763 struct tun_filter *target_filter; 5764 char *target_addr; 5765 5766 assert(ie->access == IOC_W); 5767 5768 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1); 5769 if (!target_filter) { 5770 return -TARGET_EFAULT; 5771 } 5772 filter->flags = tswap16(target_filter->flags); 5773 filter->count = tswap16(target_filter->count); 5774 unlock_user(target_filter, arg, 0); 5775 5776 if (filter->count) { 5777 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN > 5778 MAX_STRUCT_SIZE) { 5779 return -TARGET_EFAULT; 5780 } 5781 5782 target_addr = lock_user(VERIFY_READ, 5783 arg + offsetof(struct tun_filter, addr), 5784 filter->count * ETH_ALEN, 1); 5785 if (!target_addr) { 5786 return -TARGET_EFAULT; 5787 } 5788 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN); 5789 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0); 5790 } 5791 5792 return get_errno(safe_ioctl(fd, ie->host_cmd, filter)); 5793 } 5794 5795 IOCTLEntry ioctl_entries[] = { 5796 #define IOCTL(cmd, access, ...) \ 5797 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5798 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5799 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5800 #define IOCTL_IGNORE(cmd) \ 5801 { TARGET_ ## cmd, 0, #cmd }, 5802 #include "ioctls.h" 5803 { 0, 0, }, 5804 }; 5805 5806 /* ??? Implement proper locking for ioctls. */ 5807 /* do_ioctl() Must return target values and target errnos. */ 5808 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5809 { 5810 const IOCTLEntry *ie; 5811 const argtype *arg_type; 5812 abi_long ret; 5813 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5814 int target_size; 5815 void *argptr; 5816 5817 ie = ioctl_entries; 5818 for(;;) { 5819 if (ie->target_cmd == 0) { 5820 qemu_log_mask( 5821 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5822 return -TARGET_ENOSYS; 5823 } 5824 if (ie->target_cmd == cmd) 5825 break; 5826 ie++; 5827 } 5828 arg_type = ie->arg_type; 5829 if (ie->do_ioctl) { 5830 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5831 } else if (!ie->host_cmd) { 5832 /* Some architectures define BSD ioctls in their headers 5833 that are not implemented in Linux. */ 5834 return -TARGET_ENOSYS; 5835 } 5836 5837 switch(arg_type[0]) { 5838 case TYPE_NULL: 5839 /* no argument */ 5840 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5841 break; 5842 case TYPE_PTRVOID: 5843 case TYPE_INT: 5844 case TYPE_LONG: 5845 case TYPE_ULONG: 5846 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5847 break; 5848 case TYPE_PTR: 5849 arg_type++; 5850 target_size = thunk_type_size(arg_type, 0); 5851 switch(ie->access) { 5852 case IOC_R: 5853 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5854 if (!is_error(ret)) { 5855 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5856 if (!argptr) 5857 return -TARGET_EFAULT; 5858 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5859 unlock_user(argptr, arg, target_size); 5860 } 5861 break; 5862 case IOC_W: 5863 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5864 if (!argptr) 5865 return -TARGET_EFAULT; 5866 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5867 unlock_user(argptr, arg, 0); 5868 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5869 break; 5870 default: 5871 case IOC_RW: 5872 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5873 if (!argptr) 5874 return -TARGET_EFAULT; 5875 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5876 unlock_user(argptr, arg, 0); 5877 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5878 if (!is_error(ret)) { 5879 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5880 if (!argptr) 5881 return -TARGET_EFAULT; 5882 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5883 unlock_user(argptr, arg, target_size); 5884 } 5885 break; 5886 } 5887 break; 5888 default: 5889 qemu_log_mask(LOG_UNIMP, 5890 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5891 (long)cmd, arg_type[0]); 5892 ret = -TARGET_ENOSYS; 5893 break; 5894 } 5895 return ret; 5896 } 5897 5898 static const bitmask_transtbl iflag_tbl[] = { 5899 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5900 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5901 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5902 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5903 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5904 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5905 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5906 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5907 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5908 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5909 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5910 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5911 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5912 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5913 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8}, 5914 { 0, 0, 0, 0 } 5915 }; 5916 5917 static const bitmask_transtbl oflag_tbl[] = { 5918 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5919 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5920 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5921 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5922 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5923 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5924 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5925 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5926 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5927 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5928 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5929 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5930 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5931 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5932 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5933 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5934 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5935 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5936 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5937 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5938 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5939 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5940 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5941 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5942 { 0, 0, 0, 0 } 5943 }; 5944 5945 static const bitmask_transtbl cflag_tbl[] = { 5946 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5947 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5948 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5949 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5950 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5951 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5952 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5953 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5954 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5955 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5956 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5957 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5958 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5959 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5960 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5961 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5962 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5963 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5964 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5965 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5966 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5967 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5968 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5969 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5970 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5971 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5972 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5973 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5974 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5975 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5976 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5977 { 0, 0, 0, 0 } 5978 }; 5979 5980 static const bitmask_transtbl lflag_tbl[] = { 5981 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5982 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5983 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5984 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5985 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5986 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5987 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5988 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5989 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5990 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5991 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5992 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5993 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5994 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5995 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5996 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC}, 5997 { 0, 0, 0, 0 } 5998 }; 5999 6000 static void target_to_host_termios (void *dst, const void *src) 6001 { 6002 struct host_termios *host = dst; 6003 const struct target_termios *target = src; 6004 6005 host->c_iflag = 6006 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 6007 host->c_oflag = 6008 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 6009 host->c_cflag = 6010 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 6011 host->c_lflag = 6012 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 6013 host->c_line = target->c_line; 6014 6015 memset(host->c_cc, 0, sizeof(host->c_cc)); 6016 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 6017 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 6018 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 6019 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 6020 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 6021 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 6022 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 6023 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 6024 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 6025 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 6026 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 6027 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 6028 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 6029 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 6030 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 6031 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 6032 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 6033 } 6034 6035 static void host_to_target_termios (void *dst, const void *src) 6036 { 6037 struct target_termios *target = dst; 6038 const struct host_termios *host = src; 6039 6040 target->c_iflag = 6041 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 6042 target->c_oflag = 6043 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 6044 target->c_cflag = 6045 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 6046 target->c_lflag = 6047 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 6048 target->c_line = host->c_line; 6049 6050 memset(target->c_cc, 0, sizeof(target->c_cc)); 6051 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 6052 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 6053 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 6054 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 6055 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 6056 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 6057 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 6058 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 6059 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 6060 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 6061 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 6062 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 6063 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 6064 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 6065 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 6066 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 6067 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 6068 } 6069 6070 static const StructEntry struct_termios_def = { 6071 .convert = { host_to_target_termios, target_to_host_termios }, 6072 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 6073 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 6074 .print = print_termios, 6075 }; 6076 6077 static const bitmask_transtbl mmap_flags_tbl[] = { 6078 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 6079 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 6080 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 6081 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 6082 MAP_ANONYMOUS, MAP_ANONYMOUS }, 6083 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 6084 MAP_GROWSDOWN, MAP_GROWSDOWN }, 6085 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 6086 MAP_DENYWRITE, MAP_DENYWRITE }, 6087 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 6088 MAP_EXECUTABLE, MAP_EXECUTABLE }, 6089 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 6090 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 6091 MAP_NORESERVE, MAP_NORESERVE }, 6092 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 6093 /* MAP_STACK had been ignored by the kernel for quite some time. 6094 Recognize it for the target insofar as we do not want to pass 6095 it through to the host. */ 6096 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 6097 { 0, 0, 0, 0 } 6098 }; 6099 6100 /* 6101 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 6102 * TARGET_I386 is defined if TARGET_X86_64 is defined 6103 */ 6104 #if defined(TARGET_I386) 6105 6106 /* NOTE: there is really one LDT for all the threads */ 6107 static uint8_t *ldt_table; 6108 6109 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 6110 { 6111 int size; 6112 void *p; 6113 6114 if (!ldt_table) 6115 return 0; 6116 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 6117 if (size > bytecount) 6118 size = bytecount; 6119 p = lock_user(VERIFY_WRITE, ptr, size, 0); 6120 if (!p) 6121 return -TARGET_EFAULT; 6122 /* ??? Should this by byteswapped? */ 6123 memcpy(p, ldt_table, size); 6124 unlock_user(p, ptr, size); 6125 return size; 6126 } 6127 6128 /* XXX: add locking support */ 6129 static abi_long write_ldt(CPUX86State *env, 6130 abi_ulong ptr, unsigned long bytecount, int oldmode) 6131 { 6132 struct target_modify_ldt_ldt_s ldt_info; 6133 struct target_modify_ldt_ldt_s *target_ldt_info; 6134 int seg_32bit, contents, read_exec_only, limit_in_pages; 6135 int seg_not_present, useable, lm; 6136 uint32_t *lp, entry_1, entry_2; 6137 6138 if (bytecount != sizeof(ldt_info)) 6139 return -TARGET_EINVAL; 6140 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 6141 return -TARGET_EFAULT; 6142 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6143 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6144 ldt_info.limit = tswap32(target_ldt_info->limit); 6145 ldt_info.flags = tswap32(target_ldt_info->flags); 6146 unlock_user_struct(target_ldt_info, ptr, 0); 6147 6148 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 6149 return -TARGET_EINVAL; 6150 seg_32bit = ldt_info.flags & 1; 6151 contents = (ldt_info.flags >> 1) & 3; 6152 read_exec_only = (ldt_info.flags >> 3) & 1; 6153 limit_in_pages = (ldt_info.flags >> 4) & 1; 6154 seg_not_present = (ldt_info.flags >> 5) & 1; 6155 useable = (ldt_info.flags >> 6) & 1; 6156 #ifdef TARGET_ABI32 6157 lm = 0; 6158 #else 6159 lm = (ldt_info.flags >> 7) & 1; 6160 #endif 6161 if (contents == 3) { 6162 if (oldmode) 6163 return -TARGET_EINVAL; 6164 if (seg_not_present == 0) 6165 return -TARGET_EINVAL; 6166 } 6167 /* allocate the LDT */ 6168 if (!ldt_table) { 6169 env->ldt.base = target_mmap(0, 6170 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 6171 PROT_READ|PROT_WRITE, 6172 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 6173 if (env->ldt.base == -1) 6174 return -TARGET_ENOMEM; 6175 memset(g2h_untagged(env->ldt.base), 0, 6176 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 6177 env->ldt.limit = 0xffff; 6178 ldt_table = g2h_untagged(env->ldt.base); 6179 } 6180 6181 /* NOTE: same code as Linux kernel */ 6182 /* Allow LDTs to be cleared by the user. */ 6183 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6184 if (oldmode || 6185 (contents == 0 && 6186 read_exec_only == 1 && 6187 seg_32bit == 0 && 6188 limit_in_pages == 0 && 6189 seg_not_present == 1 && 6190 useable == 0 )) { 6191 entry_1 = 0; 6192 entry_2 = 0; 6193 goto install; 6194 } 6195 } 6196 6197 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6198 (ldt_info.limit & 0x0ffff); 6199 entry_2 = (ldt_info.base_addr & 0xff000000) | 6200 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6201 (ldt_info.limit & 0xf0000) | 6202 ((read_exec_only ^ 1) << 9) | 6203 (contents << 10) | 6204 ((seg_not_present ^ 1) << 15) | 6205 (seg_32bit << 22) | 6206 (limit_in_pages << 23) | 6207 (lm << 21) | 6208 0x7000; 6209 if (!oldmode) 6210 entry_2 |= (useable << 20); 6211 6212 /* Install the new entry ... */ 6213 install: 6214 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 6215 lp[0] = tswap32(entry_1); 6216 lp[1] = tswap32(entry_2); 6217 return 0; 6218 } 6219 6220 /* specific and weird i386 syscalls */ 6221 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6222 unsigned long bytecount) 6223 { 6224 abi_long ret; 6225 6226 switch (func) { 6227 case 0: 6228 ret = read_ldt(ptr, bytecount); 6229 break; 6230 case 1: 6231 ret = write_ldt(env, ptr, bytecount, 1); 6232 break; 6233 case 0x11: 6234 ret = write_ldt(env, ptr, bytecount, 0); 6235 break; 6236 default: 6237 ret = -TARGET_ENOSYS; 6238 break; 6239 } 6240 return ret; 6241 } 6242 6243 #if defined(TARGET_ABI32) 6244 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6245 { 6246 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6247 struct target_modify_ldt_ldt_s ldt_info; 6248 struct target_modify_ldt_ldt_s *target_ldt_info; 6249 int seg_32bit, contents, read_exec_only, limit_in_pages; 6250 int seg_not_present, useable, lm; 6251 uint32_t *lp, entry_1, entry_2; 6252 int i; 6253 6254 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6255 if (!target_ldt_info) 6256 return -TARGET_EFAULT; 6257 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6258 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6259 ldt_info.limit = tswap32(target_ldt_info->limit); 6260 ldt_info.flags = tswap32(target_ldt_info->flags); 6261 if (ldt_info.entry_number == -1) { 6262 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6263 if (gdt_table[i] == 0) { 6264 ldt_info.entry_number = i; 6265 target_ldt_info->entry_number = tswap32(i); 6266 break; 6267 } 6268 } 6269 } 6270 unlock_user_struct(target_ldt_info, ptr, 1); 6271 6272 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6273 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6274 return -TARGET_EINVAL; 6275 seg_32bit = ldt_info.flags & 1; 6276 contents = (ldt_info.flags >> 1) & 3; 6277 read_exec_only = (ldt_info.flags >> 3) & 1; 6278 limit_in_pages = (ldt_info.flags >> 4) & 1; 6279 seg_not_present = (ldt_info.flags >> 5) & 1; 6280 useable = (ldt_info.flags >> 6) & 1; 6281 #ifdef TARGET_ABI32 6282 lm = 0; 6283 #else 6284 lm = (ldt_info.flags >> 7) & 1; 6285 #endif 6286 6287 if (contents == 3) { 6288 if (seg_not_present == 0) 6289 return -TARGET_EINVAL; 6290 } 6291 6292 /* NOTE: same code as Linux kernel */ 6293 /* Allow LDTs to be cleared by the user. */ 6294 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6295 if ((contents == 0 && 6296 read_exec_only == 1 && 6297 seg_32bit == 0 && 6298 limit_in_pages == 0 && 6299 seg_not_present == 1 && 6300 useable == 0 )) { 6301 entry_1 = 0; 6302 entry_2 = 0; 6303 goto install; 6304 } 6305 } 6306 6307 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6308 (ldt_info.limit & 0x0ffff); 6309 entry_2 = (ldt_info.base_addr & 0xff000000) | 6310 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6311 (ldt_info.limit & 0xf0000) | 6312 ((read_exec_only ^ 1) << 9) | 6313 (contents << 10) | 6314 ((seg_not_present ^ 1) << 15) | 6315 (seg_32bit << 22) | 6316 (limit_in_pages << 23) | 6317 (useable << 20) | 6318 (lm << 21) | 6319 0x7000; 6320 6321 /* Install the new entry ... */ 6322 install: 6323 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6324 lp[0] = tswap32(entry_1); 6325 lp[1] = tswap32(entry_2); 6326 return 0; 6327 } 6328 6329 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6330 { 6331 struct target_modify_ldt_ldt_s *target_ldt_info; 6332 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6333 uint32_t base_addr, limit, flags; 6334 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6335 int seg_not_present, useable, lm; 6336 uint32_t *lp, entry_1, entry_2; 6337 6338 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6339 if (!target_ldt_info) 6340 return -TARGET_EFAULT; 6341 idx = tswap32(target_ldt_info->entry_number); 6342 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6343 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6344 unlock_user_struct(target_ldt_info, ptr, 1); 6345 return -TARGET_EINVAL; 6346 } 6347 lp = (uint32_t *)(gdt_table + idx); 6348 entry_1 = tswap32(lp[0]); 6349 entry_2 = tswap32(lp[1]); 6350 6351 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6352 contents = (entry_2 >> 10) & 3; 6353 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6354 seg_32bit = (entry_2 >> 22) & 1; 6355 limit_in_pages = (entry_2 >> 23) & 1; 6356 useable = (entry_2 >> 20) & 1; 6357 #ifdef TARGET_ABI32 6358 lm = 0; 6359 #else 6360 lm = (entry_2 >> 21) & 1; 6361 #endif 6362 flags = (seg_32bit << 0) | (contents << 1) | 6363 (read_exec_only << 3) | (limit_in_pages << 4) | 6364 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6365 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6366 base_addr = (entry_1 >> 16) | 6367 (entry_2 & 0xff000000) | 6368 ((entry_2 & 0xff) << 16); 6369 target_ldt_info->base_addr = tswapal(base_addr); 6370 target_ldt_info->limit = tswap32(limit); 6371 target_ldt_info->flags = tswap32(flags); 6372 unlock_user_struct(target_ldt_info, ptr, 1); 6373 return 0; 6374 } 6375 6376 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6377 { 6378 return -TARGET_ENOSYS; 6379 } 6380 #else 6381 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6382 { 6383 abi_long ret = 0; 6384 abi_ulong val; 6385 int idx; 6386 6387 switch(code) { 6388 case TARGET_ARCH_SET_GS: 6389 case TARGET_ARCH_SET_FS: 6390 if (code == TARGET_ARCH_SET_GS) 6391 idx = R_GS; 6392 else 6393 idx = R_FS; 6394 cpu_x86_load_seg(env, idx, 0); 6395 env->segs[idx].base = addr; 6396 break; 6397 case TARGET_ARCH_GET_GS: 6398 case TARGET_ARCH_GET_FS: 6399 if (code == TARGET_ARCH_GET_GS) 6400 idx = R_GS; 6401 else 6402 idx = R_FS; 6403 val = env->segs[idx].base; 6404 if (put_user(val, addr, abi_ulong)) 6405 ret = -TARGET_EFAULT; 6406 break; 6407 default: 6408 ret = -TARGET_EINVAL; 6409 break; 6410 } 6411 return ret; 6412 } 6413 #endif /* defined(TARGET_ABI32 */ 6414 6415 #endif /* defined(TARGET_I386) */ 6416 6417 #define NEW_STACK_SIZE 0x40000 6418 6419 6420 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6421 typedef struct { 6422 CPUArchState *env; 6423 pthread_mutex_t mutex; 6424 pthread_cond_t cond; 6425 pthread_t thread; 6426 uint32_t tid; 6427 abi_ulong child_tidptr; 6428 abi_ulong parent_tidptr; 6429 sigset_t sigmask; 6430 } new_thread_info; 6431 6432 static void *clone_func(void *arg) 6433 { 6434 new_thread_info *info = arg; 6435 CPUArchState *env; 6436 CPUState *cpu; 6437 TaskState *ts; 6438 6439 rcu_register_thread(); 6440 tcg_register_thread(); 6441 env = info->env; 6442 cpu = env_cpu(env); 6443 thread_cpu = cpu; 6444 ts = (TaskState *)cpu->opaque; 6445 info->tid = sys_gettid(); 6446 task_settid(ts); 6447 if (info->child_tidptr) 6448 put_user_u32(info->tid, info->child_tidptr); 6449 if (info->parent_tidptr) 6450 put_user_u32(info->tid, info->parent_tidptr); 6451 qemu_guest_random_seed_thread_part2(cpu->random_seed); 6452 /* Enable signals. */ 6453 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6454 /* Signal to the parent that we're ready. */ 6455 pthread_mutex_lock(&info->mutex); 6456 pthread_cond_broadcast(&info->cond); 6457 pthread_mutex_unlock(&info->mutex); 6458 /* Wait until the parent has finished initializing the tls state. */ 6459 pthread_mutex_lock(&clone_lock); 6460 pthread_mutex_unlock(&clone_lock); 6461 cpu_loop(env); 6462 /* never exits */ 6463 return NULL; 6464 } 6465 6466 /* do_fork() Must return host values and target errnos (unlike most 6467 do_*() functions). */ 6468 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6469 abi_ulong parent_tidptr, target_ulong newtls, 6470 abi_ulong child_tidptr) 6471 { 6472 CPUState *cpu = env_cpu(env); 6473 int ret; 6474 TaskState *ts; 6475 CPUState *new_cpu; 6476 CPUArchState *new_env; 6477 sigset_t sigmask; 6478 6479 flags &= ~CLONE_IGNORED_FLAGS; 6480 6481 /* Emulate vfork() with fork() */ 6482 if (flags & CLONE_VFORK) 6483 flags &= ~(CLONE_VFORK | CLONE_VM); 6484 6485 if (flags & CLONE_VM) { 6486 TaskState *parent_ts = (TaskState *)cpu->opaque; 6487 new_thread_info info; 6488 pthread_attr_t attr; 6489 6490 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6491 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6492 return -TARGET_EINVAL; 6493 } 6494 6495 ts = g_new0(TaskState, 1); 6496 init_task_state(ts); 6497 6498 /* Grab a mutex so that thread setup appears atomic. */ 6499 pthread_mutex_lock(&clone_lock); 6500 6501 /* 6502 * If this is our first additional thread, we need to ensure we 6503 * generate code for parallel execution and flush old translations. 6504 * Do this now so that the copy gets CF_PARALLEL too. 6505 */ 6506 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 6507 cpu->tcg_cflags |= CF_PARALLEL; 6508 tb_flush(cpu); 6509 } 6510 6511 /* we create a new CPU instance. */ 6512 new_env = cpu_copy(env); 6513 /* Init regs that differ from the parent. */ 6514 cpu_clone_regs_child(new_env, newsp, flags); 6515 cpu_clone_regs_parent(env, flags); 6516 new_cpu = env_cpu(new_env); 6517 new_cpu->opaque = ts; 6518 ts->bprm = parent_ts->bprm; 6519 ts->info = parent_ts->info; 6520 ts->signal_mask = parent_ts->signal_mask; 6521 6522 if (flags & CLONE_CHILD_CLEARTID) { 6523 ts->child_tidptr = child_tidptr; 6524 } 6525 6526 if (flags & CLONE_SETTLS) { 6527 cpu_set_tls (new_env, newtls); 6528 } 6529 6530 memset(&info, 0, sizeof(info)); 6531 pthread_mutex_init(&info.mutex, NULL); 6532 pthread_mutex_lock(&info.mutex); 6533 pthread_cond_init(&info.cond, NULL); 6534 info.env = new_env; 6535 if (flags & CLONE_CHILD_SETTID) { 6536 info.child_tidptr = child_tidptr; 6537 } 6538 if (flags & CLONE_PARENT_SETTID) { 6539 info.parent_tidptr = parent_tidptr; 6540 } 6541 6542 ret = pthread_attr_init(&attr); 6543 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6544 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6545 /* It is not safe to deliver signals until the child has finished 6546 initializing, so temporarily block all signals. */ 6547 sigfillset(&sigmask); 6548 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6549 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6550 6551 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6552 /* TODO: Free new CPU state if thread creation failed. */ 6553 6554 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6555 pthread_attr_destroy(&attr); 6556 if (ret == 0) { 6557 /* Wait for the child to initialize. */ 6558 pthread_cond_wait(&info.cond, &info.mutex); 6559 ret = info.tid; 6560 } else { 6561 ret = -1; 6562 } 6563 pthread_mutex_unlock(&info.mutex); 6564 pthread_cond_destroy(&info.cond); 6565 pthread_mutex_destroy(&info.mutex); 6566 pthread_mutex_unlock(&clone_lock); 6567 } else { 6568 /* if no CLONE_VM, we consider it is a fork */ 6569 if (flags & CLONE_INVALID_FORK_FLAGS) { 6570 return -TARGET_EINVAL; 6571 } 6572 6573 /* We can't support custom termination signals */ 6574 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6575 return -TARGET_EINVAL; 6576 } 6577 6578 if (block_signals()) { 6579 return -TARGET_ERESTARTSYS; 6580 } 6581 6582 fork_start(); 6583 ret = fork(); 6584 if (ret == 0) { 6585 /* Child Process. */ 6586 cpu_clone_regs_child(env, newsp, flags); 6587 fork_end(1); 6588 /* There is a race condition here. The parent process could 6589 theoretically read the TID in the child process before the child 6590 tid is set. This would require using either ptrace 6591 (not implemented) or having *_tidptr to point at a shared memory 6592 mapping. We can't repeat the spinlock hack used above because 6593 the child process gets its own copy of the lock. */ 6594 if (flags & CLONE_CHILD_SETTID) 6595 put_user_u32(sys_gettid(), child_tidptr); 6596 if (flags & CLONE_PARENT_SETTID) 6597 put_user_u32(sys_gettid(), parent_tidptr); 6598 ts = (TaskState *)cpu->opaque; 6599 if (flags & CLONE_SETTLS) 6600 cpu_set_tls (env, newtls); 6601 if (flags & CLONE_CHILD_CLEARTID) 6602 ts->child_tidptr = child_tidptr; 6603 } else { 6604 cpu_clone_regs_parent(env, flags); 6605 fork_end(0); 6606 } 6607 } 6608 return ret; 6609 } 6610 6611 /* warning : doesn't handle linux specific flags... */ 6612 static int target_to_host_fcntl_cmd(int cmd) 6613 { 6614 int ret; 6615 6616 switch(cmd) { 6617 case TARGET_F_DUPFD: 6618 case TARGET_F_GETFD: 6619 case TARGET_F_SETFD: 6620 case TARGET_F_GETFL: 6621 case TARGET_F_SETFL: 6622 case TARGET_F_OFD_GETLK: 6623 case TARGET_F_OFD_SETLK: 6624 case TARGET_F_OFD_SETLKW: 6625 ret = cmd; 6626 break; 6627 case TARGET_F_GETLK: 6628 ret = F_GETLK64; 6629 break; 6630 case TARGET_F_SETLK: 6631 ret = F_SETLK64; 6632 break; 6633 case TARGET_F_SETLKW: 6634 ret = F_SETLKW64; 6635 break; 6636 case TARGET_F_GETOWN: 6637 ret = F_GETOWN; 6638 break; 6639 case TARGET_F_SETOWN: 6640 ret = F_SETOWN; 6641 break; 6642 case TARGET_F_GETSIG: 6643 ret = F_GETSIG; 6644 break; 6645 case TARGET_F_SETSIG: 6646 ret = F_SETSIG; 6647 break; 6648 #if TARGET_ABI_BITS == 32 6649 case TARGET_F_GETLK64: 6650 ret = F_GETLK64; 6651 break; 6652 case TARGET_F_SETLK64: 6653 ret = F_SETLK64; 6654 break; 6655 case TARGET_F_SETLKW64: 6656 ret = F_SETLKW64; 6657 break; 6658 #endif 6659 case TARGET_F_SETLEASE: 6660 ret = F_SETLEASE; 6661 break; 6662 case TARGET_F_GETLEASE: 6663 ret = F_GETLEASE; 6664 break; 6665 #ifdef F_DUPFD_CLOEXEC 6666 case TARGET_F_DUPFD_CLOEXEC: 6667 ret = F_DUPFD_CLOEXEC; 6668 break; 6669 #endif 6670 case TARGET_F_NOTIFY: 6671 ret = F_NOTIFY; 6672 break; 6673 #ifdef F_GETOWN_EX 6674 case TARGET_F_GETOWN_EX: 6675 ret = F_GETOWN_EX; 6676 break; 6677 #endif 6678 #ifdef F_SETOWN_EX 6679 case TARGET_F_SETOWN_EX: 6680 ret = F_SETOWN_EX; 6681 break; 6682 #endif 6683 #ifdef F_SETPIPE_SZ 6684 case TARGET_F_SETPIPE_SZ: 6685 ret = F_SETPIPE_SZ; 6686 break; 6687 case TARGET_F_GETPIPE_SZ: 6688 ret = F_GETPIPE_SZ; 6689 break; 6690 #endif 6691 #ifdef F_ADD_SEALS 6692 case TARGET_F_ADD_SEALS: 6693 ret = F_ADD_SEALS; 6694 break; 6695 case TARGET_F_GET_SEALS: 6696 ret = F_GET_SEALS; 6697 break; 6698 #endif 6699 default: 6700 ret = -TARGET_EINVAL; 6701 break; 6702 } 6703 6704 #if defined(__powerpc64__) 6705 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6706 * is not supported by kernel. The glibc fcntl call actually adjusts 6707 * them to 5, 6 and 7 before making the syscall(). Since we make the 6708 * syscall directly, adjust to what is supported by the kernel. 6709 */ 6710 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6711 ret -= F_GETLK64 - 5; 6712 } 6713 #endif 6714 6715 return ret; 6716 } 6717 6718 #define FLOCK_TRANSTBL \ 6719 switch (type) { \ 6720 TRANSTBL_CONVERT(F_RDLCK); \ 6721 TRANSTBL_CONVERT(F_WRLCK); \ 6722 TRANSTBL_CONVERT(F_UNLCK); \ 6723 } 6724 6725 static int target_to_host_flock(int type) 6726 { 6727 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6728 FLOCK_TRANSTBL 6729 #undef TRANSTBL_CONVERT 6730 return -TARGET_EINVAL; 6731 } 6732 6733 static int host_to_target_flock(int type) 6734 { 6735 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6736 FLOCK_TRANSTBL 6737 #undef TRANSTBL_CONVERT 6738 /* if we don't know how to convert the value coming 6739 * from the host we copy to the target field as-is 6740 */ 6741 return type; 6742 } 6743 6744 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6745 abi_ulong target_flock_addr) 6746 { 6747 struct target_flock *target_fl; 6748 int l_type; 6749 6750 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6751 return -TARGET_EFAULT; 6752 } 6753 6754 __get_user(l_type, &target_fl->l_type); 6755 l_type = target_to_host_flock(l_type); 6756 if (l_type < 0) { 6757 return l_type; 6758 } 6759 fl->l_type = l_type; 6760 __get_user(fl->l_whence, &target_fl->l_whence); 6761 __get_user(fl->l_start, &target_fl->l_start); 6762 __get_user(fl->l_len, &target_fl->l_len); 6763 __get_user(fl->l_pid, &target_fl->l_pid); 6764 unlock_user_struct(target_fl, target_flock_addr, 0); 6765 return 0; 6766 } 6767 6768 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6769 const struct flock64 *fl) 6770 { 6771 struct target_flock *target_fl; 6772 short l_type; 6773 6774 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6775 return -TARGET_EFAULT; 6776 } 6777 6778 l_type = host_to_target_flock(fl->l_type); 6779 __put_user(l_type, &target_fl->l_type); 6780 __put_user(fl->l_whence, &target_fl->l_whence); 6781 __put_user(fl->l_start, &target_fl->l_start); 6782 __put_user(fl->l_len, &target_fl->l_len); 6783 __put_user(fl->l_pid, &target_fl->l_pid); 6784 unlock_user_struct(target_fl, target_flock_addr, 1); 6785 return 0; 6786 } 6787 6788 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6789 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6790 6791 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6792 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 6793 abi_ulong target_flock_addr) 6794 { 6795 struct target_oabi_flock64 *target_fl; 6796 int l_type; 6797 6798 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6799 return -TARGET_EFAULT; 6800 } 6801 6802 __get_user(l_type, &target_fl->l_type); 6803 l_type = target_to_host_flock(l_type); 6804 if (l_type < 0) { 6805 return l_type; 6806 } 6807 fl->l_type = l_type; 6808 __get_user(fl->l_whence, &target_fl->l_whence); 6809 __get_user(fl->l_start, &target_fl->l_start); 6810 __get_user(fl->l_len, &target_fl->l_len); 6811 __get_user(fl->l_pid, &target_fl->l_pid); 6812 unlock_user_struct(target_fl, target_flock_addr, 0); 6813 return 0; 6814 } 6815 6816 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 6817 const struct flock64 *fl) 6818 { 6819 struct target_oabi_flock64 *target_fl; 6820 short l_type; 6821 6822 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6823 return -TARGET_EFAULT; 6824 } 6825 6826 l_type = host_to_target_flock(fl->l_type); 6827 __put_user(l_type, &target_fl->l_type); 6828 __put_user(fl->l_whence, &target_fl->l_whence); 6829 __put_user(fl->l_start, &target_fl->l_start); 6830 __put_user(fl->l_len, &target_fl->l_len); 6831 __put_user(fl->l_pid, &target_fl->l_pid); 6832 unlock_user_struct(target_fl, target_flock_addr, 1); 6833 return 0; 6834 } 6835 #endif 6836 6837 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6838 abi_ulong target_flock_addr) 6839 { 6840 struct target_flock64 *target_fl; 6841 int l_type; 6842 6843 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6844 return -TARGET_EFAULT; 6845 } 6846 6847 __get_user(l_type, &target_fl->l_type); 6848 l_type = target_to_host_flock(l_type); 6849 if (l_type < 0) { 6850 return l_type; 6851 } 6852 fl->l_type = l_type; 6853 __get_user(fl->l_whence, &target_fl->l_whence); 6854 __get_user(fl->l_start, &target_fl->l_start); 6855 __get_user(fl->l_len, &target_fl->l_len); 6856 __get_user(fl->l_pid, &target_fl->l_pid); 6857 unlock_user_struct(target_fl, target_flock_addr, 0); 6858 return 0; 6859 } 6860 6861 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 6862 const struct flock64 *fl) 6863 { 6864 struct target_flock64 *target_fl; 6865 short l_type; 6866 6867 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6868 return -TARGET_EFAULT; 6869 } 6870 6871 l_type = host_to_target_flock(fl->l_type); 6872 __put_user(l_type, &target_fl->l_type); 6873 __put_user(fl->l_whence, &target_fl->l_whence); 6874 __put_user(fl->l_start, &target_fl->l_start); 6875 __put_user(fl->l_len, &target_fl->l_len); 6876 __put_user(fl->l_pid, &target_fl->l_pid); 6877 unlock_user_struct(target_fl, target_flock_addr, 1); 6878 return 0; 6879 } 6880 6881 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 6882 { 6883 struct flock64 fl64; 6884 #ifdef F_GETOWN_EX 6885 struct f_owner_ex fox; 6886 struct target_f_owner_ex *target_fox; 6887 #endif 6888 abi_long ret; 6889 int host_cmd = target_to_host_fcntl_cmd(cmd); 6890 6891 if (host_cmd == -TARGET_EINVAL) 6892 return host_cmd; 6893 6894 switch(cmd) { 6895 case TARGET_F_GETLK: 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 if (ret == 0) { 6902 ret = copy_to_user_flock(arg, &fl64); 6903 } 6904 break; 6905 6906 case TARGET_F_SETLK: 6907 case TARGET_F_SETLKW: 6908 ret = copy_from_user_flock(&fl64, arg); 6909 if (ret) { 6910 return ret; 6911 } 6912 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6913 break; 6914 6915 case TARGET_F_GETLK64: 6916 case TARGET_F_OFD_GETLK: 6917 ret = copy_from_user_flock64(&fl64, arg); 6918 if (ret) { 6919 return ret; 6920 } 6921 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6922 if (ret == 0) { 6923 ret = copy_to_user_flock64(arg, &fl64); 6924 } 6925 break; 6926 case TARGET_F_SETLK64: 6927 case TARGET_F_SETLKW64: 6928 case TARGET_F_OFD_SETLK: 6929 case TARGET_F_OFD_SETLKW: 6930 ret = copy_from_user_flock64(&fl64, arg); 6931 if (ret) { 6932 return ret; 6933 } 6934 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6935 break; 6936 6937 case TARGET_F_GETFL: 6938 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6939 if (ret >= 0) { 6940 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 6941 } 6942 break; 6943 6944 case TARGET_F_SETFL: 6945 ret = get_errno(safe_fcntl(fd, host_cmd, 6946 target_to_host_bitmask(arg, 6947 fcntl_flags_tbl))); 6948 break; 6949 6950 #ifdef F_GETOWN_EX 6951 case TARGET_F_GETOWN_EX: 6952 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6953 if (ret >= 0) { 6954 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 6955 return -TARGET_EFAULT; 6956 target_fox->type = tswap32(fox.type); 6957 target_fox->pid = tswap32(fox.pid); 6958 unlock_user_struct(target_fox, arg, 1); 6959 } 6960 break; 6961 #endif 6962 6963 #ifdef F_SETOWN_EX 6964 case TARGET_F_SETOWN_EX: 6965 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 6966 return -TARGET_EFAULT; 6967 fox.type = tswap32(target_fox->type); 6968 fox.pid = tswap32(target_fox->pid); 6969 unlock_user_struct(target_fox, arg, 0); 6970 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6971 break; 6972 #endif 6973 6974 case TARGET_F_SETSIG: 6975 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg))); 6976 break; 6977 6978 case TARGET_F_GETSIG: 6979 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg))); 6980 break; 6981 6982 case TARGET_F_SETOWN: 6983 case TARGET_F_GETOWN: 6984 case TARGET_F_SETLEASE: 6985 case TARGET_F_GETLEASE: 6986 case TARGET_F_SETPIPE_SZ: 6987 case TARGET_F_GETPIPE_SZ: 6988 case TARGET_F_ADD_SEALS: 6989 case TARGET_F_GET_SEALS: 6990 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6991 break; 6992 6993 default: 6994 ret = get_errno(safe_fcntl(fd, cmd, arg)); 6995 break; 6996 } 6997 return ret; 6998 } 6999 7000 #ifdef USE_UID16 7001 7002 static inline int high2lowuid(int uid) 7003 { 7004 if (uid > 65535) 7005 return 65534; 7006 else 7007 return uid; 7008 } 7009 7010 static inline int high2lowgid(int gid) 7011 { 7012 if (gid > 65535) 7013 return 65534; 7014 else 7015 return gid; 7016 } 7017 7018 static inline int low2highuid(int uid) 7019 { 7020 if ((int16_t)uid == -1) 7021 return -1; 7022 else 7023 return uid; 7024 } 7025 7026 static inline int low2highgid(int gid) 7027 { 7028 if ((int16_t)gid == -1) 7029 return -1; 7030 else 7031 return gid; 7032 } 7033 static inline int tswapid(int id) 7034 { 7035 return tswap16(id); 7036 } 7037 7038 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 7039 7040 #else /* !USE_UID16 */ 7041 static inline int high2lowuid(int uid) 7042 { 7043 return uid; 7044 } 7045 static inline int high2lowgid(int gid) 7046 { 7047 return gid; 7048 } 7049 static inline int low2highuid(int uid) 7050 { 7051 return uid; 7052 } 7053 static inline int low2highgid(int gid) 7054 { 7055 return gid; 7056 } 7057 static inline int tswapid(int id) 7058 { 7059 return tswap32(id); 7060 } 7061 7062 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 7063 7064 #endif /* USE_UID16 */ 7065 7066 /* We must do direct syscalls for setting UID/GID, because we want to 7067 * implement the Linux system call semantics of "change only for this thread", 7068 * not the libc/POSIX semantics of "change for all threads in process". 7069 * (See http://ewontfix.com/17/ for more details.) 7070 * We use the 32-bit version of the syscalls if present; if it is not 7071 * then either the host architecture supports 32-bit UIDs natively with 7072 * the standard syscall, or the 16-bit UID is the best we can do. 7073 */ 7074 #ifdef __NR_setuid32 7075 #define __NR_sys_setuid __NR_setuid32 7076 #else 7077 #define __NR_sys_setuid __NR_setuid 7078 #endif 7079 #ifdef __NR_setgid32 7080 #define __NR_sys_setgid __NR_setgid32 7081 #else 7082 #define __NR_sys_setgid __NR_setgid 7083 #endif 7084 #ifdef __NR_setresuid32 7085 #define __NR_sys_setresuid __NR_setresuid32 7086 #else 7087 #define __NR_sys_setresuid __NR_setresuid 7088 #endif 7089 #ifdef __NR_setresgid32 7090 #define __NR_sys_setresgid __NR_setresgid32 7091 #else 7092 #define __NR_sys_setresgid __NR_setresgid 7093 #endif 7094 7095 _syscall1(int, sys_setuid, uid_t, uid) 7096 _syscall1(int, sys_setgid, gid_t, gid) 7097 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 7098 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 7099 7100 void syscall_init(void) 7101 { 7102 IOCTLEntry *ie; 7103 const argtype *arg_type; 7104 int size; 7105 int i; 7106 7107 thunk_init(STRUCT_MAX); 7108 7109 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 7110 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 7111 #include "syscall_types.h" 7112 #undef STRUCT 7113 #undef STRUCT_SPECIAL 7114 7115 /* Build target_to_host_errno_table[] table from 7116 * host_to_target_errno_table[]. */ 7117 for (i = 0; i < ERRNO_TABLE_SIZE; i++) { 7118 target_to_host_errno_table[host_to_target_errno_table[i]] = i; 7119 } 7120 7121 /* we patch the ioctl size if necessary. We rely on the fact that 7122 no ioctl has all the bits at '1' in the size field */ 7123 ie = ioctl_entries; 7124 while (ie->target_cmd != 0) { 7125 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 7126 TARGET_IOC_SIZEMASK) { 7127 arg_type = ie->arg_type; 7128 if (arg_type[0] != TYPE_PTR) { 7129 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 7130 ie->target_cmd); 7131 exit(1); 7132 } 7133 arg_type++; 7134 size = thunk_type_size(arg_type, 0); 7135 ie->target_cmd = (ie->target_cmd & 7136 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 7137 (size << TARGET_IOC_SIZESHIFT); 7138 } 7139 7140 /* automatic consistency check if same arch */ 7141 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 7142 (defined(__x86_64__) && defined(TARGET_X86_64)) 7143 if (unlikely(ie->target_cmd != ie->host_cmd)) { 7144 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 7145 ie->name, ie->target_cmd, ie->host_cmd); 7146 } 7147 #endif 7148 ie++; 7149 } 7150 } 7151 7152 #ifdef TARGET_NR_truncate64 7153 static inline abi_long target_truncate64(void *cpu_env, const char *arg1, 7154 abi_long arg2, 7155 abi_long arg3, 7156 abi_long arg4) 7157 { 7158 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 7159 arg2 = arg3; 7160 arg3 = arg4; 7161 } 7162 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 7163 } 7164 #endif 7165 7166 #ifdef TARGET_NR_ftruncate64 7167 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, 7168 abi_long arg2, 7169 abi_long arg3, 7170 abi_long arg4) 7171 { 7172 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 7173 arg2 = arg3; 7174 arg3 = arg4; 7175 } 7176 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 7177 } 7178 #endif 7179 7180 #if defined(TARGET_NR_timer_settime) || \ 7181 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 7182 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its, 7183 abi_ulong target_addr) 7184 { 7185 if (target_to_host_timespec(&host_its->it_interval, target_addr + 7186 offsetof(struct target_itimerspec, 7187 it_interval)) || 7188 target_to_host_timespec(&host_its->it_value, target_addr + 7189 offsetof(struct target_itimerspec, 7190 it_value))) { 7191 return -TARGET_EFAULT; 7192 } 7193 7194 return 0; 7195 } 7196 #endif 7197 7198 #if defined(TARGET_NR_timer_settime64) || \ 7199 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) 7200 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its, 7201 abi_ulong target_addr) 7202 { 7203 if (target_to_host_timespec64(&host_its->it_interval, target_addr + 7204 offsetof(struct target__kernel_itimerspec, 7205 it_interval)) || 7206 target_to_host_timespec64(&host_its->it_value, target_addr + 7207 offsetof(struct target__kernel_itimerspec, 7208 it_value))) { 7209 return -TARGET_EFAULT; 7210 } 7211 7212 return 0; 7213 } 7214 #endif 7215 7216 #if ((defined(TARGET_NR_timerfd_gettime) || \ 7217 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 7218 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 7219 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 7220 struct itimerspec *host_its) 7221 { 7222 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7223 it_interval), 7224 &host_its->it_interval) || 7225 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7226 it_value), 7227 &host_its->it_value)) { 7228 return -TARGET_EFAULT; 7229 } 7230 return 0; 7231 } 7232 #endif 7233 7234 #if ((defined(TARGET_NR_timerfd_gettime64) || \ 7235 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \ 7236 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64) 7237 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr, 7238 struct itimerspec *host_its) 7239 { 7240 if (host_to_target_timespec64(target_addr + 7241 offsetof(struct target__kernel_itimerspec, 7242 it_interval), 7243 &host_its->it_interval) || 7244 host_to_target_timespec64(target_addr + 7245 offsetof(struct target__kernel_itimerspec, 7246 it_value), 7247 &host_its->it_value)) { 7248 return -TARGET_EFAULT; 7249 } 7250 return 0; 7251 } 7252 #endif 7253 7254 #if defined(TARGET_NR_adjtimex) || \ 7255 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 7256 static inline abi_long target_to_host_timex(struct timex *host_tx, 7257 abi_long target_addr) 7258 { 7259 struct target_timex *target_tx; 7260 7261 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7262 return -TARGET_EFAULT; 7263 } 7264 7265 __get_user(host_tx->modes, &target_tx->modes); 7266 __get_user(host_tx->offset, &target_tx->offset); 7267 __get_user(host_tx->freq, &target_tx->freq); 7268 __get_user(host_tx->maxerror, &target_tx->maxerror); 7269 __get_user(host_tx->esterror, &target_tx->esterror); 7270 __get_user(host_tx->status, &target_tx->status); 7271 __get_user(host_tx->constant, &target_tx->constant); 7272 __get_user(host_tx->precision, &target_tx->precision); 7273 __get_user(host_tx->tolerance, &target_tx->tolerance); 7274 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7275 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7276 __get_user(host_tx->tick, &target_tx->tick); 7277 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7278 __get_user(host_tx->jitter, &target_tx->jitter); 7279 __get_user(host_tx->shift, &target_tx->shift); 7280 __get_user(host_tx->stabil, &target_tx->stabil); 7281 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7282 __get_user(host_tx->calcnt, &target_tx->calcnt); 7283 __get_user(host_tx->errcnt, &target_tx->errcnt); 7284 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7285 __get_user(host_tx->tai, &target_tx->tai); 7286 7287 unlock_user_struct(target_tx, target_addr, 0); 7288 return 0; 7289 } 7290 7291 static inline abi_long host_to_target_timex(abi_long target_addr, 7292 struct timex *host_tx) 7293 { 7294 struct target_timex *target_tx; 7295 7296 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7297 return -TARGET_EFAULT; 7298 } 7299 7300 __put_user(host_tx->modes, &target_tx->modes); 7301 __put_user(host_tx->offset, &target_tx->offset); 7302 __put_user(host_tx->freq, &target_tx->freq); 7303 __put_user(host_tx->maxerror, &target_tx->maxerror); 7304 __put_user(host_tx->esterror, &target_tx->esterror); 7305 __put_user(host_tx->status, &target_tx->status); 7306 __put_user(host_tx->constant, &target_tx->constant); 7307 __put_user(host_tx->precision, &target_tx->precision); 7308 __put_user(host_tx->tolerance, &target_tx->tolerance); 7309 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7310 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7311 __put_user(host_tx->tick, &target_tx->tick); 7312 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7313 __put_user(host_tx->jitter, &target_tx->jitter); 7314 __put_user(host_tx->shift, &target_tx->shift); 7315 __put_user(host_tx->stabil, &target_tx->stabil); 7316 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7317 __put_user(host_tx->calcnt, &target_tx->calcnt); 7318 __put_user(host_tx->errcnt, &target_tx->errcnt); 7319 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7320 __put_user(host_tx->tai, &target_tx->tai); 7321 7322 unlock_user_struct(target_tx, target_addr, 1); 7323 return 0; 7324 } 7325 #endif 7326 7327 7328 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 7329 static inline abi_long target_to_host_timex64(struct timex *host_tx, 7330 abi_long target_addr) 7331 { 7332 struct target__kernel_timex *target_tx; 7333 7334 if (copy_from_user_timeval64(&host_tx->time, target_addr + 7335 offsetof(struct target__kernel_timex, 7336 time))) { 7337 return -TARGET_EFAULT; 7338 } 7339 7340 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7341 return -TARGET_EFAULT; 7342 } 7343 7344 __get_user(host_tx->modes, &target_tx->modes); 7345 __get_user(host_tx->offset, &target_tx->offset); 7346 __get_user(host_tx->freq, &target_tx->freq); 7347 __get_user(host_tx->maxerror, &target_tx->maxerror); 7348 __get_user(host_tx->esterror, &target_tx->esterror); 7349 __get_user(host_tx->status, &target_tx->status); 7350 __get_user(host_tx->constant, &target_tx->constant); 7351 __get_user(host_tx->precision, &target_tx->precision); 7352 __get_user(host_tx->tolerance, &target_tx->tolerance); 7353 __get_user(host_tx->tick, &target_tx->tick); 7354 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7355 __get_user(host_tx->jitter, &target_tx->jitter); 7356 __get_user(host_tx->shift, &target_tx->shift); 7357 __get_user(host_tx->stabil, &target_tx->stabil); 7358 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7359 __get_user(host_tx->calcnt, &target_tx->calcnt); 7360 __get_user(host_tx->errcnt, &target_tx->errcnt); 7361 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7362 __get_user(host_tx->tai, &target_tx->tai); 7363 7364 unlock_user_struct(target_tx, target_addr, 0); 7365 return 0; 7366 } 7367 7368 static inline abi_long host_to_target_timex64(abi_long target_addr, 7369 struct timex *host_tx) 7370 { 7371 struct target__kernel_timex *target_tx; 7372 7373 if (copy_to_user_timeval64(target_addr + 7374 offsetof(struct target__kernel_timex, time), 7375 &host_tx->time)) { 7376 return -TARGET_EFAULT; 7377 } 7378 7379 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7380 return -TARGET_EFAULT; 7381 } 7382 7383 __put_user(host_tx->modes, &target_tx->modes); 7384 __put_user(host_tx->offset, &target_tx->offset); 7385 __put_user(host_tx->freq, &target_tx->freq); 7386 __put_user(host_tx->maxerror, &target_tx->maxerror); 7387 __put_user(host_tx->esterror, &target_tx->esterror); 7388 __put_user(host_tx->status, &target_tx->status); 7389 __put_user(host_tx->constant, &target_tx->constant); 7390 __put_user(host_tx->precision, &target_tx->precision); 7391 __put_user(host_tx->tolerance, &target_tx->tolerance); 7392 __put_user(host_tx->tick, &target_tx->tick); 7393 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7394 __put_user(host_tx->jitter, &target_tx->jitter); 7395 __put_user(host_tx->shift, &target_tx->shift); 7396 __put_user(host_tx->stabil, &target_tx->stabil); 7397 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7398 __put_user(host_tx->calcnt, &target_tx->calcnt); 7399 __put_user(host_tx->errcnt, &target_tx->errcnt); 7400 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7401 __put_user(host_tx->tai, &target_tx->tai); 7402 7403 unlock_user_struct(target_tx, target_addr, 1); 7404 return 0; 7405 } 7406 #endif 7407 7408 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7409 abi_ulong target_addr) 7410 { 7411 struct target_sigevent *target_sevp; 7412 7413 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7414 return -TARGET_EFAULT; 7415 } 7416 7417 /* This union is awkward on 64 bit systems because it has a 32 bit 7418 * integer and a pointer in it; we follow the conversion approach 7419 * used for handling sigval types in signal.c so the guest should get 7420 * the correct value back even if we did a 64 bit byteswap and it's 7421 * using the 32 bit integer. 7422 */ 7423 host_sevp->sigev_value.sival_ptr = 7424 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7425 host_sevp->sigev_signo = 7426 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7427 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7428 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid); 7429 7430 unlock_user_struct(target_sevp, target_addr, 1); 7431 return 0; 7432 } 7433 7434 #if defined(TARGET_NR_mlockall) 7435 static inline int target_to_host_mlockall_arg(int arg) 7436 { 7437 int result = 0; 7438 7439 if (arg & TARGET_MCL_CURRENT) { 7440 result |= MCL_CURRENT; 7441 } 7442 if (arg & TARGET_MCL_FUTURE) { 7443 result |= MCL_FUTURE; 7444 } 7445 #ifdef MCL_ONFAULT 7446 if (arg & TARGET_MCL_ONFAULT) { 7447 result |= MCL_ONFAULT; 7448 } 7449 #endif 7450 7451 return result; 7452 } 7453 #endif 7454 7455 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 7456 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 7457 defined(TARGET_NR_newfstatat)) 7458 static inline abi_long host_to_target_stat64(void *cpu_env, 7459 abi_ulong target_addr, 7460 struct stat *host_st) 7461 { 7462 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7463 if (((CPUARMState *)cpu_env)->eabi) { 7464 struct target_eabi_stat64 *target_st; 7465 7466 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7467 return -TARGET_EFAULT; 7468 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7469 __put_user(host_st->st_dev, &target_st->st_dev); 7470 __put_user(host_st->st_ino, &target_st->st_ino); 7471 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7472 __put_user(host_st->st_ino, &target_st->__st_ino); 7473 #endif 7474 __put_user(host_st->st_mode, &target_st->st_mode); 7475 __put_user(host_st->st_nlink, &target_st->st_nlink); 7476 __put_user(host_st->st_uid, &target_st->st_uid); 7477 __put_user(host_st->st_gid, &target_st->st_gid); 7478 __put_user(host_st->st_rdev, &target_st->st_rdev); 7479 __put_user(host_st->st_size, &target_st->st_size); 7480 __put_user(host_st->st_blksize, &target_st->st_blksize); 7481 __put_user(host_st->st_blocks, &target_st->st_blocks); 7482 __put_user(host_st->st_atime, &target_st->target_st_atime); 7483 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7484 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7485 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7486 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7487 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7488 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7489 #endif 7490 unlock_user_struct(target_st, target_addr, 1); 7491 } else 7492 #endif 7493 { 7494 #if defined(TARGET_HAS_STRUCT_STAT64) 7495 struct target_stat64 *target_st; 7496 #else 7497 struct target_stat *target_st; 7498 #endif 7499 7500 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7501 return -TARGET_EFAULT; 7502 memset(target_st, 0, sizeof(*target_st)); 7503 __put_user(host_st->st_dev, &target_st->st_dev); 7504 __put_user(host_st->st_ino, &target_st->st_ino); 7505 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7506 __put_user(host_st->st_ino, &target_st->__st_ino); 7507 #endif 7508 __put_user(host_st->st_mode, &target_st->st_mode); 7509 __put_user(host_st->st_nlink, &target_st->st_nlink); 7510 __put_user(host_st->st_uid, &target_st->st_uid); 7511 __put_user(host_st->st_gid, &target_st->st_gid); 7512 __put_user(host_st->st_rdev, &target_st->st_rdev); 7513 /* XXX: better use of kernel struct */ 7514 __put_user(host_st->st_size, &target_st->st_size); 7515 __put_user(host_st->st_blksize, &target_st->st_blksize); 7516 __put_user(host_st->st_blocks, &target_st->st_blocks); 7517 __put_user(host_st->st_atime, &target_st->target_st_atime); 7518 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7519 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7520 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7521 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7522 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7523 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7524 #endif 7525 unlock_user_struct(target_st, target_addr, 1); 7526 } 7527 7528 return 0; 7529 } 7530 #endif 7531 7532 #if defined(TARGET_NR_statx) && defined(__NR_statx) 7533 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 7534 abi_ulong target_addr) 7535 { 7536 struct target_statx *target_stx; 7537 7538 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 7539 return -TARGET_EFAULT; 7540 } 7541 memset(target_stx, 0, sizeof(*target_stx)); 7542 7543 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 7544 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 7545 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 7546 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 7547 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 7548 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 7549 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 7550 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 7551 __put_user(host_stx->stx_size, &target_stx->stx_size); 7552 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 7553 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 7554 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 7555 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 7556 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 7557 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 7558 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 7559 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 7560 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 7561 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 7562 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 7563 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 7564 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 7565 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 7566 7567 unlock_user_struct(target_stx, target_addr, 1); 7568 7569 return 0; 7570 } 7571 #endif 7572 7573 static int do_sys_futex(int *uaddr, int op, int val, 7574 const struct timespec *timeout, int *uaddr2, 7575 int val3) 7576 { 7577 #if HOST_LONG_BITS == 64 7578 #if defined(__NR_futex) 7579 /* always a 64-bit time_t, it doesn't define _time64 version */ 7580 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7581 7582 #endif 7583 #else /* HOST_LONG_BITS == 64 */ 7584 #if defined(__NR_futex_time64) 7585 if (sizeof(timeout->tv_sec) == 8) { 7586 /* _time64 function on 32bit arch */ 7587 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 7588 } 7589 #endif 7590 #if defined(__NR_futex) 7591 /* old function on 32bit arch */ 7592 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7593 #endif 7594 #endif /* HOST_LONG_BITS == 64 */ 7595 g_assert_not_reached(); 7596 } 7597 7598 static int do_safe_futex(int *uaddr, int op, int val, 7599 const struct timespec *timeout, int *uaddr2, 7600 int val3) 7601 { 7602 #if HOST_LONG_BITS == 64 7603 #if defined(__NR_futex) 7604 /* always a 64-bit time_t, it doesn't define _time64 version */ 7605 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7606 #endif 7607 #else /* HOST_LONG_BITS == 64 */ 7608 #if defined(__NR_futex_time64) 7609 if (sizeof(timeout->tv_sec) == 8) { 7610 /* _time64 function on 32bit arch */ 7611 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 7612 val3)); 7613 } 7614 #endif 7615 #if defined(__NR_futex) 7616 /* old function on 32bit arch */ 7617 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7618 #endif 7619 #endif /* HOST_LONG_BITS == 64 */ 7620 return -TARGET_ENOSYS; 7621 } 7622 7623 /* ??? Using host futex calls even when target atomic operations 7624 are not really atomic probably breaks things. However implementing 7625 futexes locally would make futexes shared between multiple processes 7626 tricky. However they're probably useless because guest atomic 7627 operations won't work either. */ 7628 #if defined(TARGET_NR_futex) 7629 static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val, 7630 target_ulong timeout, target_ulong uaddr2, int val3) 7631 { 7632 struct timespec ts, *pts; 7633 int base_op; 7634 7635 /* ??? We assume FUTEX_* constants are the same on both host 7636 and target. */ 7637 #ifdef FUTEX_CMD_MASK 7638 base_op = op & FUTEX_CMD_MASK; 7639 #else 7640 base_op = op; 7641 #endif 7642 switch (base_op) { 7643 case FUTEX_WAIT: 7644 case FUTEX_WAIT_BITSET: 7645 if (timeout) { 7646 pts = &ts; 7647 target_to_host_timespec(pts, timeout); 7648 } else { 7649 pts = NULL; 7650 } 7651 return do_safe_futex(g2h(cpu, uaddr), 7652 op, tswap32(val), pts, NULL, val3); 7653 case FUTEX_WAKE: 7654 return do_safe_futex(g2h(cpu, uaddr), 7655 op, val, NULL, NULL, 0); 7656 case FUTEX_FD: 7657 return do_safe_futex(g2h(cpu, uaddr), 7658 op, val, NULL, NULL, 0); 7659 case FUTEX_REQUEUE: 7660 case FUTEX_CMP_REQUEUE: 7661 case FUTEX_WAKE_OP: 7662 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7663 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7664 But the prototype takes a `struct timespec *'; insert casts 7665 to satisfy the compiler. We do not need to tswap TIMEOUT 7666 since it's not compared to guest memory. */ 7667 pts = (struct timespec *)(uintptr_t) timeout; 7668 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), 7669 (base_op == FUTEX_CMP_REQUEUE 7670 ? tswap32(val3) : val3)); 7671 default: 7672 return -TARGET_ENOSYS; 7673 } 7674 } 7675 #endif 7676 7677 #if defined(TARGET_NR_futex_time64) 7678 static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op, 7679 int val, target_ulong timeout, 7680 target_ulong uaddr2, int val3) 7681 { 7682 struct timespec ts, *pts; 7683 int base_op; 7684 7685 /* ??? We assume FUTEX_* constants are the same on both host 7686 and target. */ 7687 #ifdef FUTEX_CMD_MASK 7688 base_op = op & FUTEX_CMD_MASK; 7689 #else 7690 base_op = op; 7691 #endif 7692 switch (base_op) { 7693 case FUTEX_WAIT: 7694 case FUTEX_WAIT_BITSET: 7695 if (timeout) { 7696 pts = &ts; 7697 if (target_to_host_timespec64(pts, timeout)) { 7698 return -TARGET_EFAULT; 7699 } 7700 } else { 7701 pts = NULL; 7702 } 7703 return do_safe_futex(g2h(cpu, uaddr), op, 7704 tswap32(val), pts, NULL, val3); 7705 case FUTEX_WAKE: 7706 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); 7707 case FUTEX_FD: 7708 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); 7709 case FUTEX_REQUEUE: 7710 case FUTEX_CMP_REQUEUE: 7711 case FUTEX_WAKE_OP: 7712 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7713 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7714 But the prototype takes a `struct timespec *'; insert casts 7715 to satisfy the compiler. We do not need to tswap TIMEOUT 7716 since it's not compared to guest memory. */ 7717 pts = (struct timespec *)(uintptr_t) timeout; 7718 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), 7719 (base_op == FUTEX_CMP_REQUEUE 7720 ? tswap32(val3) : val3)); 7721 default: 7722 return -TARGET_ENOSYS; 7723 } 7724 } 7725 #endif 7726 7727 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7728 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7729 abi_long handle, abi_long mount_id, 7730 abi_long flags) 7731 { 7732 struct file_handle *target_fh; 7733 struct file_handle *fh; 7734 int mid = 0; 7735 abi_long ret; 7736 char *name; 7737 unsigned int size, total_size; 7738 7739 if (get_user_s32(size, handle)) { 7740 return -TARGET_EFAULT; 7741 } 7742 7743 name = lock_user_string(pathname); 7744 if (!name) { 7745 return -TARGET_EFAULT; 7746 } 7747 7748 total_size = sizeof(struct file_handle) + size; 7749 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7750 if (!target_fh) { 7751 unlock_user(name, pathname, 0); 7752 return -TARGET_EFAULT; 7753 } 7754 7755 fh = g_malloc0(total_size); 7756 fh->handle_bytes = size; 7757 7758 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7759 unlock_user(name, pathname, 0); 7760 7761 /* man name_to_handle_at(2): 7762 * Other than the use of the handle_bytes field, the caller should treat 7763 * the file_handle structure as an opaque data type 7764 */ 7765 7766 memcpy(target_fh, fh, total_size); 7767 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7768 target_fh->handle_type = tswap32(fh->handle_type); 7769 g_free(fh); 7770 unlock_user(target_fh, handle, total_size); 7771 7772 if (put_user_s32(mid, mount_id)) { 7773 return -TARGET_EFAULT; 7774 } 7775 7776 return ret; 7777 7778 } 7779 #endif 7780 7781 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7782 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7783 abi_long flags) 7784 { 7785 struct file_handle *target_fh; 7786 struct file_handle *fh; 7787 unsigned int size, total_size; 7788 abi_long ret; 7789 7790 if (get_user_s32(size, handle)) { 7791 return -TARGET_EFAULT; 7792 } 7793 7794 total_size = sizeof(struct file_handle) + size; 7795 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7796 if (!target_fh) { 7797 return -TARGET_EFAULT; 7798 } 7799 7800 fh = g_memdup(target_fh, total_size); 7801 fh->handle_bytes = size; 7802 fh->handle_type = tswap32(target_fh->handle_type); 7803 7804 ret = get_errno(open_by_handle_at(mount_fd, fh, 7805 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7806 7807 g_free(fh); 7808 7809 unlock_user(target_fh, handle, total_size); 7810 7811 return ret; 7812 } 7813 #endif 7814 7815 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7816 7817 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7818 { 7819 int host_flags; 7820 target_sigset_t *target_mask; 7821 sigset_t host_mask; 7822 abi_long ret; 7823 7824 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 7825 return -TARGET_EINVAL; 7826 } 7827 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7828 return -TARGET_EFAULT; 7829 } 7830 7831 target_to_host_sigset(&host_mask, target_mask); 7832 7833 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7834 7835 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7836 if (ret >= 0) { 7837 fd_trans_register(ret, &target_signalfd_trans); 7838 } 7839 7840 unlock_user_struct(target_mask, mask, 0); 7841 7842 return ret; 7843 } 7844 #endif 7845 7846 /* Map host to target signal numbers for the wait family of syscalls. 7847 Assume all other status bits are the same. */ 7848 int host_to_target_waitstatus(int status) 7849 { 7850 if (WIFSIGNALED(status)) { 7851 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7852 } 7853 if (WIFSTOPPED(status)) { 7854 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7855 | (status & 0xff); 7856 } 7857 return status; 7858 } 7859 7860 static int open_self_cmdline(void *cpu_env, int fd) 7861 { 7862 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7863 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7864 int i; 7865 7866 for (i = 0; i < bprm->argc; i++) { 7867 size_t len = strlen(bprm->argv[i]) + 1; 7868 7869 if (write(fd, bprm->argv[i], len) != len) { 7870 return -1; 7871 } 7872 } 7873 7874 return 0; 7875 } 7876 7877 static int open_self_maps(void *cpu_env, int fd) 7878 { 7879 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7880 TaskState *ts = cpu->opaque; 7881 GSList *map_info = read_self_maps(); 7882 GSList *s; 7883 int count; 7884 7885 for (s = map_info; s; s = g_slist_next(s)) { 7886 MapInfo *e = (MapInfo *) s->data; 7887 7888 if (h2g_valid(e->start)) { 7889 unsigned long min = e->start; 7890 unsigned long max = e->end; 7891 int flags = page_get_flags(h2g(min)); 7892 const char *path; 7893 7894 max = h2g_valid(max - 1) ? 7895 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; 7896 7897 if (page_check_range(h2g(min), max - min, flags) == -1) { 7898 continue; 7899 } 7900 7901 if (h2g(min) == ts->info->stack_limit) { 7902 path = "[stack]"; 7903 } else { 7904 path = e->path; 7905 } 7906 7907 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 7908 " %c%c%c%c %08" PRIx64 " %s %"PRId64, 7909 h2g(min), h2g(max - 1) + 1, 7910 (flags & PAGE_READ) ? 'r' : '-', 7911 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 7912 (flags & PAGE_EXEC) ? 'x' : '-', 7913 e->is_priv ? 'p' : '-', 7914 (uint64_t) e->offset, e->dev, e->inode); 7915 if (path) { 7916 dprintf(fd, "%*s%s\n", 73 - count, "", path); 7917 } else { 7918 dprintf(fd, "\n"); 7919 } 7920 } 7921 } 7922 7923 free_self_maps(map_info); 7924 7925 #ifdef TARGET_VSYSCALL_PAGE 7926 /* 7927 * We only support execution from the vsyscall page. 7928 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 7929 */ 7930 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 7931 " --xp 00000000 00:00 0", 7932 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 7933 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]"); 7934 #endif 7935 7936 return 0; 7937 } 7938 7939 static int open_self_stat(void *cpu_env, int fd) 7940 { 7941 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7942 TaskState *ts = cpu->opaque; 7943 g_autoptr(GString) buf = g_string_new(NULL); 7944 int i; 7945 7946 for (i = 0; i < 44; i++) { 7947 if (i == 0) { 7948 /* pid */ 7949 g_string_printf(buf, FMT_pid " ", getpid()); 7950 } else if (i == 1) { 7951 /* app name */ 7952 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 7953 bin = bin ? bin + 1 : ts->bprm->argv[0]; 7954 g_string_printf(buf, "(%.15s) ", bin); 7955 } else if (i == 27) { 7956 /* stack bottom */ 7957 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 7958 } else { 7959 /* for the rest, there is MasterCard */ 7960 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 7961 } 7962 7963 if (write(fd, buf->str, buf->len) != buf->len) { 7964 return -1; 7965 } 7966 } 7967 7968 return 0; 7969 } 7970 7971 static int open_self_auxv(void *cpu_env, int fd) 7972 { 7973 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7974 TaskState *ts = cpu->opaque; 7975 abi_ulong auxv = ts->info->saved_auxv; 7976 abi_ulong len = ts->info->auxv_len; 7977 char *ptr; 7978 7979 /* 7980 * Auxiliary vector is stored in target process stack. 7981 * read in whole auxv vector and copy it to file 7982 */ 7983 ptr = lock_user(VERIFY_READ, auxv, len, 0); 7984 if (ptr != NULL) { 7985 while (len > 0) { 7986 ssize_t r; 7987 r = write(fd, ptr, len); 7988 if (r <= 0) { 7989 break; 7990 } 7991 len -= r; 7992 ptr += r; 7993 } 7994 lseek(fd, 0, SEEK_SET); 7995 unlock_user(ptr, auxv, len); 7996 } 7997 7998 return 0; 7999 } 8000 8001 static int is_proc_myself(const char *filename, const char *entry) 8002 { 8003 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 8004 filename += strlen("/proc/"); 8005 if (!strncmp(filename, "self/", strlen("self/"))) { 8006 filename += strlen("self/"); 8007 } else if (*filename >= '1' && *filename <= '9') { 8008 char myself[80]; 8009 snprintf(myself, sizeof(myself), "%d/", getpid()); 8010 if (!strncmp(filename, myself, strlen(myself))) { 8011 filename += strlen(myself); 8012 } else { 8013 return 0; 8014 } 8015 } else { 8016 return 0; 8017 } 8018 if (!strcmp(filename, entry)) { 8019 return 1; 8020 } 8021 } 8022 return 0; 8023 } 8024 8025 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \ 8026 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) 8027 static int is_proc(const char *filename, const char *entry) 8028 { 8029 return strcmp(filename, entry) == 0; 8030 } 8031 #endif 8032 8033 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 8034 static int open_net_route(void *cpu_env, int fd) 8035 { 8036 FILE *fp; 8037 char *line = NULL; 8038 size_t len = 0; 8039 ssize_t read; 8040 8041 fp = fopen("/proc/net/route", "r"); 8042 if (fp == NULL) { 8043 return -1; 8044 } 8045 8046 /* read header */ 8047 8048 read = getline(&line, &len, fp); 8049 dprintf(fd, "%s", line); 8050 8051 /* read routes */ 8052 8053 while ((read = getline(&line, &len, fp)) != -1) { 8054 char iface[16]; 8055 uint32_t dest, gw, mask; 8056 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8057 int fields; 8058 8059 fields = sscanf(line, 8060 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8061 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8062 &mask, &mtu, &window, &irtt); 8063 if (fields != 11) { 8064 continue; 8065 } 8066 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8067 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8068 metric, tswap32(mask), mtu, window, irtt); 8069 } 8070 8071 free(line); 8072 fclose(fp); 8073 8074 return 0; 8075 } 8076 #endif 8077 8078 #if defined(TARGET_SPARC) 8079 static int open_cpuinfo(void *cpu_env, int fd) 8080 { 8081 dprintf(fd, "type\t\t: sun4u\n"); 8082 return 0; 8083 } 8084 #endif 8085 8086 #if defined(TARGET_HPPA) 8087 static int open_cpuinfo(void *cpu_env, int fd) 8088 { 8089 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n"); 8090 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n"); 8091 dprintf(fd, "capabilities\t: os32\n"); 8092 dprintf(fd, "model\t\t: 9000/778/B160L\n"); 8093 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n"); 8094 return 0; 8095 } 8096 #endif 8097 8098 #if defined(TARGET_M68K) 8099 static int open_hardware(void *cpu_env, int fd) 8100 { 8101 dprintf(fd, "Model:\t\tqemu-m68k\n"); 8102 return 0; 8103 } 8104 #endif 8105 8106 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 8107 { 8108 struct fake_open { 8109 const char *filename; 8110 int (*fill)(void *cpu_env, int fd); 8111 int (*cmp)(const char *s1, const char *s2); 8112 }; 8113 const struct fake_open *fake_open; 8114 static const struct fake_open fakes[] = { 8115 { "maps", open_self_maps, is_proc_myself }, 8116 { "stat", open_self_stat, is_proc_myself }, 8117 { "auxv", open_self_auxv, is_proc_myself }, 8118 { "cmdline", open_self_cmdline, is_proc_myself }, 8119 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 8120 { "/proc/net/route", open_net_route, is_proc }, 8121 #endif 8122 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) 8123 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8124 #endif 8125 #if defined(TARGET_M68K) 8126 { "/proc/hardware", open_hardware, is_proc }, 8127 #endif 8128 { NULL, NULL, NULL } 8129 }; 8130 8131 if (is_proc_myself(pathname, "exe")) { 8132 int execfd = qemu_getauxval(AT_EXECFD); 8133 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 8134 } 8135 8136 for (fake_open = fakes; fake_open->filename; fake_open++) { 8137 if (fake_open->cmp(pathname, fake_open->filename)) { 8138 break; 8139 } 8140 } 8141 8142 if (fake_open->filename) { 8143 const char *tmpdir; 8144 char filename[PATH_MAX]; 8145 int fd, r; 8146 8147 /* create temporary file to map stat to */ 8148 tmpdir = getenv("TMPDIR"); 8149 if (!tmpdir) 8150 tmpdir = "/tmp"; 8151 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8152 fd = mkstemp(filename); 8153 if (fd < 0) { 8154 return fd; 8155 } 8156 unlink(filename); 8157 8158 if ((r = fake_open->fill(cpu_env, fd))) { 8159 int e = errno; 8160 close(fd); 8161 errno = e; 8162 return r; 8163 } 8164 lseek(fd, 0, SEEK_SET); 8165 8166 return fd; 8167 } 8168 8169 return safe_openat(dirfd, path(pathname), flags, mode); 8170 } 8171 8172 #define TIMER_MAGIC 0x0caf0000 8173 #define TIMER_MAGIC_MASK 0xffff0000 8174 8175 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8176 static target_timer_t get_timer_id(abi_long arg) 8177 { 8178 target_timer_t timerid = arg; 8179 8180 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8181 return -TARGET_EINVAL; 8182 } 8183 8184 timerid &= 0xffff; 8185 8186 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8187 return -TARGET_EINVAL; 8188 } 8189 8190 return timerid; 8191 } 8192 8193 static int target_to_host_cpu_mask(unsigned long *host_mask, 8194 size_t host_size, 8195 abi_ulong target_addr, 8196 size_t target_size) 8197 { 8198 unsigned target_bits = sizeof(abi_ulong) * 8; 8199 unsigned host_bits = sizeof(*host_mask) * 8; 8200 abi_ulong *target_mask; 8201 unsigned i, j; 8202 8203 assert(host_size >= target_size); 8204 8205 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8206 if (!target_mask) { 8207 return -TARGET_EFAULT; 8208 } 8209 memset(host_mask, 0, host_size); 8210 8211 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8212 unsigned bit = i * target_bits; 8213 abi_ulong val; 8214 8215 __get_user(val, &target_mask[i]); 8216 for (j = 0; j < target_bits; j++, bit++) { 8217 if (val & (1UL << j)) { 8218 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8219 } 8220 } 8221 } 8222 8223 unlock_user(target_mask, target_addr, 0); 8224 return 0; 8225 } 8226 8227 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8228 size_t host_size, 8229 abi_ulong target_addr, 8230 size_t target_size) 8231 { 8232 unsigned target_bits = sizeof(abi_ulong) * 8; 8233 unsigned host_bits = sizeof(*host_mask) * 8; 8234 abi_ulong *target_mask; 8235 unsigned i, j; 8236 8237 assert(host_size >= target_size); 8238 8239 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8240 if (!target_mask) { 8241 return -TARGET_EFAULT; 8242 } 8243 8244 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8245 unsigned bit = i * target_bits; 8246 abi_ulong val = 0; 8247 8248 for (j = 0; j < target_bits; j++, bit++) { 8249 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8250 val |= 1UL << j; 8251 } 8252 } 8253 __put_user(val, &target_mask[i]); 8254 } 8255 8256 unlock_user(target_mask, target_addr, target_size); 8257 return 0; 8258 } 8259 8260 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root) 8261 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old) 8262 #endif 8263 8264 /* This is an internal helper for do_syscall so that it is easier 8265 * to have a single return point, so that actions, such as logging 8266 * of syscall results, can be performed. 8267 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 8268 */ 8269 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, 8270 abi_long arg2, abi_long arg3, abi_long arg4, 8271 abi_long arg5, abi_long arg6, abi_long arg7, 8272 abi_long arg8) 8273 { 8274 CPUState *cpu = env_cpu(cpu_env); 8275 abi_long ret; 8276 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 8277 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 8278 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 8279 || defined(TARGET_NR_statx) 8280 struct stat st; 8281 #endif 8282 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 8283 || defined(TARGET_NR_fstatfs) 8284 struct statfs stfs; 8285 #endif 8286 void *p; 8287 8288 switch(num) { 8289 case TARGET_NR_exit: 8290 /* In old applications this may be used to implement _exit(2). 8291 However in threaded applications it is used for thread termination, 8292 and _exit_group is used for application termination. 8293 Do thread termination if we have more then one thread. */ 8294 8295 if (block_signals()) { 8296 return -TARGET_ERESTARTSYS; 8297 } 8298 8299 pthread_mutex_lock(&clone_lock); 8300 8301 if (CPU_NEXT(first_cpu)) { 8302 TaskState *ts = cpu->opaque; 8303 8304 object_property_set_bool(OBJECT(cpu), "realized", false, NULL); 8305 object_unref(OBJECT(cpu)); 8306 /* 8307 * At this point the CPU should be unrealized and removed 8308 * from cpu lists. We can clean-up the rest of the thread 8309 * data without the lock held. 8310 */ 8311 8312 pthread_mutex_unlock(&clone_lock); 8313 8314 if (ts->child_tidptr) { 8315 put_user_u32(0, ts->child_tidptr); 8316 do_sys_futex(g2h(cpu, ts->child_tidptr), 8317 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 8318 } 8319 thread_cpu = NULL; 8320 g_free(ts); 8321 rcu_unregister_thread(); 8322 pthread_exit(NULL); 8323 } 8324 8325 pthread_mutex_unlock(&clone_lock); 8326 preexit_cleanup(cpu_env, arg1); 8327 _exit(arg1); 8328 return 0; /* avoid warning */ 8329 case TARGET_NR_read: 8330 if (arg2 == 0 && arg3 == 0) { 8331 return get_errno(safe_read(arg1, 0, 0)); 8332 } else { 8333 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8334 return -TARGET_EFAULT; 8335 ret = get_errno(safe_read(arg1, p, arg3)); 8336 if (ret >= 0 && 8337 fd_trans_host_to_target_data(arg1)) { 8338 ret = fd_trans_host_to_target_data(arg1)(p, ret); 8339 } 8340 unlock_user(p, arg2, ret); 8341 } 8342 return ret; 8343 case TARGET_NR_write: 8344 if (arg2 == 0 && arg3 == 0) { 8345 return get_errno(safe_write(arg1, 0, 0)); 8346 } 8347 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8348 return -TARGET_EFAULT; 8349 if (fd_trans_target_to_host_data(arg1)) { 8350 void *copy = g_malloc(arg3); 8351 memcpy(copy, p, arg3); 8352 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 8353 if (ret >= 0) { 8354 ret = get_errno(safe_write(arg1, copy, ret)); 8355 } 8356 g_free(copy); 8357 } else { 8358 ret = get_errno(safe_write(arg1, p, arg3)); 8359 } 8360 unlock_user(p, arg2, 0); 8361 return ret; 8362 8363 #ifdef TARGET_NR_open 8364 case TARGET_NR_open: 8365 if (!(p = lock_user_string(arg1))) 8366 return -TARGET_EFAULT; 8367 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 8368 target_to_host_bitmask(arg2, fcntl_flags_tbl), 8369 arg3)); 8370 fd_trans_unregister(ret); 8371 unlock_user(p, arg1, 0); 8372 return ret; 8373 #endif 8374 case TARGET_NR_openat: 8375 if (!(p = lock_user_string(arg2))) 8376 return -TARGET_EFAULT; 8377 ret = get_errno(do_openat(cpu_env, arg1, p, 8378 target_to_host_bitmask(arg3, fcntl_flags_tbl), 8379 arg4)); 8380 fd_trans_unregister(ret); 8381 unlock_user(p, arg2, 0); 8382 return ret; 8383 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8384 case TARGET_NR_name_to_handle_at: 8385 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 8386 return ret; 8387 #endif 8388 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8389 case TARGET_NR_open_by_handle_at: 8390 ret = do_open_by_handle_at(arg1, arg2, arg3); 8391 fd_trans_unregister(ret); 8392 return ret; 8393 #endif 8394 case TARGET_NR_close: 8395 fd_trans_unregister(arg1); 8396 return get_errno(close(arg1)); 8397 8398 case TARGET_NR_brk: 8399 return do_brk(arg1); 8400 #ifdef TARGET_NR_fork 8401 case TARGET_NR_fork: 8402 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 8403 #endif 8404 #ifdef TARGET_NR_waitpid 8405 case TARGET_NR_waitpid: 8406 { 8407 int status; 8408 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 8409 if (!is_error(ret) && arg2 && ret 8410 && put_user_s32(host_to_target_waitstatus(status), arg2)) 8411 return -TARGET_EFAULT; 8412 } 8413 return ret; 8414 #endif 8415 #ifdef TARGET_NR_waitid 8416 case TARGET_NR_waitid: 8417 { 8418 siginfo_t info; 8419 info.si_pid = 0; 8420 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 8421 if (!is_error(ret) && arg3 && info.si_pid != 0) { 8422 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 8423 return -TARGET_EFAULT; 8424 host_to_target_siginfo(p, &info); 8425 unlock_user(p, arg3, sizeof(target_siginfo_t)); 8426 } 8427 } 8428 return ret; 8429 #endif 8430 #ifdef TARGET_NR_creat /* not on alpha */ 8431 case TARGET_NR_creat: 8432 if (!(p = lock_user_string(arg1))) 8433 return -TARGET_EFAULT; 8434 ret = get_errno(creat(p, arg2)); 8435 fd_trans_unregister(ret); 8436 unlock_user(p, arg1, 0); 8437 return ret; 8438 #endif 8439 #ifdef TARGET_NR_link 8440 case TARGET_NR_link: 8441 { 8442 void * p2; 8443 p = lock_user_string(arg1); 8444 p2 = lock_user_string(arg2); 8445 if (!p || !p2) 8446 ret = -TARGET_EFAULT; 8447 else 8448 ret = get_errno(link(p, p2)); 8449 unlock_user(p2, arg2, 0); 8450 unlock_user(p, arg1, 0); 8451 } 8452 return ret; 8453 #endif 8454 #if defined(TARGET_NR_linkat) 8455 case TARGET_NR_linkat: 8456 { 8457 void * p2 = NULL; 8458 if (!arg2 || !arg4) 8459 return -TARGET_EFAULT; 8460 p = lock_user_string(arg2); 8461 p2 = lock_user_string(arg4); 8462 if (!p || !p2) 8463 ret = -TARGET_EFAULT; 8464 else 8465 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 8466 unlock_user(p, arg2, 0); 8467 unlock_user(p2, arg4, 0); 8468 } 8469 return ret; 8470 #endif 8471 #ifdef TARGET_NR_unlink 8472 case TARGET_NR_unlink: 8473 if (!(p = lock_user_string(arg1))) 8474 return -TARGET_EFAULT; 8475 ret = get_errno(unlink(p)); 8476 unlock_user(p, arg1, 0); 8477 return ret; 8478 #endif 8479 #if defined(TARGET_NR_unlinkat) 8480 case TARGET_NR_unlinkat: 8481 if (!(p = lock_user_string(arg2))) 8482 return -TARGET_EFAULT; 8483 ret = get_errno(unlinkat(arg1, p, arg3)); 8484 unlock_user(p, arg2, 0); 8485 return ret; 8486 #endif 8487 case TARGET_NR_execve: 8488 { 8489 char **argp, **envp; 8490 int argc, envc; 8491 abi_ulong gp; 8492 abi_ulong guest_argp; 8493 abi_ulong guest_envp; 8494 abi_ulong addr; 8495 char **q; 8496 int total_size = 0; 8497 8498 argc = 0; 8499 guest_argp = arg2; 8500 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8501 if (get_user_ual(addr, gp)) 8502 return -TARGET_EFAULT; 8503 if (!addr) 8504 break; 8505 argc++; 8506 } 8507 envc = 0; 8508 guest_envp = arg3; 8509 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8510 if (get_user_ual(addr, gp)) 8511 return -TARGET_EFAULT; 8512 if (!addr) 8513 break; 8514 envc++; 8515 } 8516 8517 argp = g_new0(char *, argc + 1); 8518 envp = g_new0(char *, envc + 1); 8519 8520 for (gp = guest_argp, q = argp; gp; 8521 gp += sizeof(abi_ulong), q++) { 8522 if (get_user_ual(addr, gp)) 8523 goto execve_efault; 8524 if (!addr) 8525 break; 8526 if (!(*q = lock_user_string(addr))) 8527 goto execve_efault; 8528 total_size += strlen(*q) + 1; 8529 } 8530 *q = NULL; 8531 8532 for (gp = guest_envp, q = envp; gp; 8533 gp += sizeof(abi_ulong), q++) { 8534 if (get_user_ual(addr, gp)) 8535 goto execve_efault; 8536 if (!addr) 8537 break; 8538 if (!(*q = lock_user_string(addr))) 8539 goto execve_efault; 8540 total_size += strlen(*q) + 1; 8541 } 8542 *q = NULL; 8543 8544 if (!(p = lock_user_string(arg1))) 8545 goto execve_efault; 8546 /* Although execve() is not an interruptible syscall it is 8547 * a special case where we must use the safe_syscall wrapper: 8548 * if we allow a signal to happen before we make the host 8549 * syscall then we will 'lose' it, because at the point of 8550 * execve the process leaves QEMU's control. So we use the 8551 * safe syscall wrapper to ensure that we either take the 8552 * signal as a guest signal, or else it does not happen 8553 * before the execve completes and makes it the other 8554 * program's problem. 8555 */ 8556 ret = get_errno(safe_execve(p, argp, envp)); 8557 unlock_user(p, arg1, 0); 8558 8559 goto execve_end; 8560 8561 execve_efault: 8562 ret = -TARGET_EFAULT; 8563 8564 execve_end: 8565 for (gp = guest_argp, q = argp; *q; 8566 gp += sizeof(abi_ulong), q++) { 8567 if (get_user_ual(addr, gp) 8568 || !addr) 8569 break; 8570 unlock_user(*q, addr, 0); 8571 } 8572 for (gp = guest_envp, q = envp; *q; 8573 gp += sizeof(abi_ulong), q++) { 8574 if (get_user_ual(addr, gp) 8575 || !addr) 8576 break; 8577 unlock_user(*q, addr, 0); 8578 } 8579 8580 g_free(argp); 8581 g_free(envp); 8582 } 8583 return ret; 8584 case TARGET_NR_chdir: 8585 if (!(p = lock_user_string(arg1))) 8586 return -TARGET_EFAULT; 8587 ret = get_errno(chdir(p)); 8588 unlock_user(p, arg1, 0); 8589 return ret; 8590 #ifdef TARGET_NR_time 8591 case TARGET_NR_time: 8592 { 8593 time_t host_time; 8594 ret = get_errno(time(&host_time)); 8595 if (!is_error(ret) 8596 && arg1 8597 && put_user_sal(host_time, arg1)) 8598 return -TARGET_EFAULT; 8599 } 8600 return ret; 8601 #endif 8602 #ifdef TARGET_NR_mknod 8603 case TARGET_NR_mknod: 8604 if (!(p = lock_user_string(arg1))) 8605 return -TARGET_EFAULT; 8606 ret = get_errno(mknod(p, arg2, arg3)); 8607 unlock_user(p, arg1, 0); 8608 return ret; 8609 #endif 8610 #if defined(TARGET_NR_mknodat) 8611 case TARGET_NR_mknodat: 8612 if (!(p = lock_user_string(arg2))) 8613 return -TARGET_EFAULT; 8614 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8615 unlock_user(p, arg2, 0); 8616 return ret; 8617 #endif 8618 #ifdef TARGET_NR_chmod 8619 case TARGET_NR_chmod: 8620 if (!(p = lock_user_string(arg1))) 8621 return -TARGET_EFAULT; 8622 ret = get_errno(chmod(p, arg2)); 8623 unlock_user(p, arg1, 0); 8624 return ret; 8625 #endif 8626 #ifdef TARGET_NR_lseek 8627 case TARGET_NR_lseek: 8628 return get_errno(lseek(arg1, arg2, arg3)); 8629 #endif 8630 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8631 /* Alpha specific */ 8632 case TARGET_NR_getxpid: 8633 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); 8634 return get_errno(getpid()); 8635 #endif 8636 #ifdef TARGET_NR_getpid 8637 case TARGET_NR_getpid: 8638 return get_errno(getpid()); 8639 #endif 8640 case TARGET_NR_mount: 8641 { 8642 /* need to look at the data field */ 8643 void *p2, *p3; 8644 8645 if (arg1) { 8646 p = lock_user_string(arg1); 8647 if (!p) { 8648 return -TARGET_EFAULT; 8649 } 8650 } else { 8651 p = NULL; 8652 } 8653 8654 p2 = lock_user_string(arg2); 8655 if (!p2) { 8656 if (arg1) { 8657 unlock_user(p, arg1, 0); 8658 } 8659 return -TARGET_EFAULT; 8660 } 8661 8662 if (arg3) { 8663 p3 = lock_user_string(arg3); 8664 if (!p3) { 8665 if (arg1) { 8666 unlock_user(p, arg1, 0); 8667 } 8668 unlock_user(p2, arg2, 0); 8669 return -TARGET_EFAULT; 8670 } 8671 } else { 8672 p3 = NULL; 8673 } 8674 8675 /* FIXME - arg5 should be locked, but it isn't clear how to 8676 * do that since it's not guaranteed to be a NULL-terminated 8677 * string. 8678 */ 8679 if (!arg5) { 8680 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8681 } else { 8682 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 8683 } 8684 ret = get_errno(ret); 8685 8686 if (arg1) { 8687 unlock_user(p, arg1, 0); 8688 } 8689 unlock_user(p2, arg2, 0); 8690 if (arg3) { 8691 unlock_user(p3, arg3, 0); 8692 } 8693 } 8694 return ret; 8695 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 8696 #if defined(TARGET_NR_umount) 8697 case TARGET_NR_umount: 8698 #endif 8699 #if defined(TARGET_NR_oldumount) 8700 case TARGET_NR_oldumount: 8701 #endif 8702 if (!(p = lock_user_string(arg1))) 8703 return -TARGET_EFAULT; 8704 ret = get_errno(umount(p)); 8705 unlock_user(p, arg1, 0); 8706 return ret; 8707 #endif 8708 #ifdef TARGET_NR_stime /* not on alpha */ 8709 case TARGET_NR_stime: 8710 { 8711 struct timespec ts; 8712 ts.tv_nsec = 0; 8713 if (get_user_sal(ts.tv_sec, arg1)) { 8714 return -TARGET_EFAULT; 8715 } 8716 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 8717 } 8718 #endif 8719 #ifdef TARGET_NR_alarm /* not on alpha */ 8720 case TARGET_NR_alarm: 8721 return alarm(arg1); 8722 #endif 8723 #ifdef TARGET_NR_pause /* not on alpha */ 8724 case TARGET_NR_pause: 8725 if (!block_signals()) { 8726 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 8727 } 8728 return -TARGET_EINTR; 8729 #endif 8730 #ifdef TARGET_NR_utime 8731 case TARGET_NR_utime: 8732 { 8733 struct utimbuf tbuf, *host_tbuf; 8734 struct target_utimbuf *target_tbuf; 8735 if (arg2) { 8736 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 8737 return -TARGET_EFAULT; 8738 tbuf.actime = tswapal(target_tbuf->actime); 8739 tbuf.modtime = tswapal(target_tbuf->modtime); 8740 unlock_user_struct(target_tbuf, arg2, 0); 8741 host_tbuf = &tbuf; 8742 } else { 8743 host_tbuf = NULL; 8744 } 8745 if (!(p = lock_user_string(arg1))) 8746 return -TARGET_EFAULT; 8747 ret = get_errno(utime(p, host_tbuf)); 8748 unlock_user(p, arg1, 0); 8749 } 8750 return ret; 8751 #endif 8752 #ifdef TARGET_NR_utimes 8753 case TARGET_NR_utimes: 8754 { 8755 struct timeval *tvp, tv[2]; 8756 if (arg2) { 8757 if (copy_from_user_timeval(&tv[0], arg2) 8758 || copy_from_user_timeval(&tv[1], 8759 arg2 + sizeof(struct target_timeval))) 8760 return -TARGET_EFAULT; 8761 tvp = tv; 8762 } else { 8763 tvp = NULL; 8764 } 8765 if (!(p = lock_user_string(arg1))) 8766 return -TARGET_EFAULT; 8767 ret = get_errno(utimes(p, tvp)); 8768 unlock_user(p, arg1, 0); 8769 } 8770 return ret; 8771 #endif 8772 #if defined(TARGET_NR_futimesat) 8773 case TARGET_NR_futimesat: 8774 { 8775 struct timeval *tvp, tv[2]; 8776 if (arg3) { 8777 if (copy_from_user_timeval(&tv[0], arg3) 8778 || copy_from_user_timeval(&tv[1], 8779 arg3 + sizeof(struct target_timeval))) 8780 return -TARGET_EFAULT; 8781 tvp = tv; 8782 } else { 8783 tvp = NULL; 8784 } 8785 if (!(p = lock_user_string(arg2))) { 8786 return -TARGET_EFAULT; 8787 } 8788 ret = get_errno(futimesat(arg1, path(p), tvp)); 8789 unlock_user(p, arg2, 0); 8790 } 8791 return ret; 8792 #endif 8793 #ifdef TARGET_NR_access 8794 case TARGET_NR_access: 8795 if (!(p = lock_user_string(arg1))) { 8796 return -TARGET_EFAULT; 8797 } 8798 ret = get_errno(access(path(p), arg2)); 8799 unlock_user(p, arg1, 0); 8800 return ret; 8801 #endif 8802 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 8803 case TARGET_NR_faccessat: 8804 if (!(p = lock_user_string(arg2))) { 8805 return -TARGET_EFAULT; 8806 } 8807 ret = get_errno(faccessat(arg1, p, arg3, 0)); 8808 unlock_user(p, arg2, 0); 8809 return ret; 8810 #endif 8811 #ifdef TARGET_NR_nice /* not on alpha */ 8812 case TARGET_NR_nice: 8813 return get_errno(nice(arg1)); 8814 #endif 8815 case TARGET_NR_sync: 8816 sync(); 8817 return 0; 8818 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 8819 case TARGET_NR_syncfs: 8820 return get_errno(syncfs(arg1)); 8821 #endif 8822 case TARGET_NR_kill: 8823 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 8824 #ifdef TARGET_NR_rename 8825 case TARGET_NR_rename: 8826 { 8827 void *p2; 8828 p = lock_user_string(arg1); 8829 p2 = lock_user_string(arg2); 8830 if (!p || !p2) 8831 ret = -TARGET_EFAULT; 8832 else 8833 ret = get_errno(rename(p, p2)); 8834 unlock_user(p2, arg2, 0); 8835 unlock_user(p, arg1, 0); 8836 } 8837 return ret; 8838 #endif 8839 #if defined(TARGET_NR_renameat) 8840 case TARGET_NR_renameat: 8841 { 8842 void *p2; 8843 p = lock_user_string(arg2); 8844 p2 = lock_user_string(arg4); 8845 if (!p || !p2) 8846 ret = -TARGET_EFAULT; 8847 else 8848 ret = get_errno(renameat(arg1, p, arg3, p2)); 8849 unlock_user(p2, arg4, 0); 8850 unlock_user(p, arg2, 0); 8851 } 8852 return ret; 8853 #endif 8854 #if defined(TARGET_NR_renameat2) 8855 case TARGET_NR_renameat2: 8856 { 8857 void *p2; 8858 p = lock_user_string(arg2); 8859 p2 = lock_user_string(arg4); 8860 if (!p || !p2) { 8861 ret = -TARGET_EFAULT; 8862 } else { 8863 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 8864 } 8865 unlock_user(p2, arg4, 0); 8866 unlock_user(p, arg2, 0); 8867 } 8868 return ret; 8869 #endif 8870 #ifdef TARGET_NR_mkdir 8871 case TARGET_NR_mkdir: 8872 if (!(p = lock_user_string(arg1))) 8873 return -TARGET_EFAULT; 8874 ret = get_errno(mkdir(p, arg2)); 8875 unlock_user(p, arg1, 0); 8876 return ret; 8877 #endif 8878 #if defined(TARGET_NR_mkdirat) 8879 case TARGET_NR_mkdirat: 8880 if (!(p = lock_user_string(arg2))) 8881 return -TARGET_EFAULT; 8882 ret = get_errno(mkdirat(arg1, p, arg3)); 8883 unlock_user(p, arg2, 0); 8884 return ret; 8885 #endif 8886 #ifdef TARGET_NR_rmdir 8887 case TARGET_NR_rmdir: 8888 if (!(p = lock_user_string(arg1))) 8889 return -TARGET_EFAULT; 8890 ret = get_errno(rmdir(p)); 8891 unlock_user(p, arg1, 0); 8892 return ret; 8893 #endif 8894 case TARGET_NR_dup: 8895 ret = get_errno(dup(arg1)); 8896 if (ret >= 0) { 8897 fd_trans_dup(arg1, ret); 8898 } 8899 return ret; 8900 #ifdef TARGET_NR_pipe 8901 case TARGET_NR_pipe: 8902 return do_pipe(cpu_env, arg1, 0, 0); 8903 #endif 8904 #ifdef TARGET_NR_pipe2 8905 case TARGET_NR_pipe2: 8906 return do_pipe(cpu_env, arg1, 8907 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 8908 #endif 8909 case TARGET_NR_times: 8910 { 8911 struct target_tms *tmsp; 8912 struct tms tms; 8913 ret = get_errno(times(&tms)); 8914 if (arg1) { 8915 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 8916 if (!tmsp) 8917 return -TARGET_EFAULT; 8918 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 8919 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 8920 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 8921 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 8922 } 8923 if (!is_error(ret)) 8924 ret = host_to_target_clock_t(ret); 8925 } 8926 return ret; 8927 case TARGET_NR_acct: 8928 if (arg1 == 0) { 8929 ret = get_errno(acct(NULL)); 8930 } else { 8931 if (!(p = lock_user_string(arg1))) { 8932 return -TARGET_EFAULT; 8933 } 8934 ret = get_errno(acct(path(p))); 8935 unlock_user(p, arg1, 0); 8936 } 8937 return ret; 8938 #ifdef TARGET_NR_umount2 8939 case TARGET_NR_umount2: 8940 if (!(p = lock_user_string(arg1))) 8941 return -TARGET_EFAULT; 8942 ret = get_errno(umount2(p, arg2)); 8943 unlock_user(p, arg1, 0); 8944 return ret; 8945 #endif 8946 case TARGET_NR_ioctl: 8947 return do_ioctl(arg1, arg2, arg3); 8948 #ifdef TARGET_NR_fcntl 8949 case TARGET_NR_fcntl: 8950 return do_fcntl(arg1, arg2, arg3); 8951 #endif 8952 case TARGET_NR_setpgid: 8953 return get_errno(setpgid(arg1, arg2)); 8954 case TARGET_NR_umask: 8955 return get_errno(umask(arg1)); 8956 case TARGET_NR_chroot: 8957 if (!(p = lock_user_string(arg1))) 8958 return -TARGET_EFAULT; 8959 ret = get_errno(chroot(p)); 8960 unlock_user(p, arg1, 0); 8961 return ret; 8962 #ifdef TARGET_NR_dup2 8963 case TARGET_NR_dup2: 8964 ret = get_errno(dup2(arg1, arg2)); 8965 if (ret >= 0) { 8966 fd_trans_dup(arg1, arg2); 8967 } 8968 return ret; 8969 #endif 8970 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 8971 case TARGET_NR_dup3: 8972 { 8973 int host_flags; 8974 8975 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 8976 return -EINVAL; 8977 } 8978 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 8979 ret = get_errno(dup3(arg1, arg2, host_flags)); 8980 if (ret >= 0) { 8981 fd_trans_dup(arg1, arg2); 8982 } 8983 return ret; 8984 } 8985 #endif 8986 #ifdef TARGET_NR_getppid /* not on alpha */ 8987 case TARGET_NR_getppid: 8988 return get_errno(getppid()); 8989 #endif 8990 #ifdef TARGET_NR_getpgrp 8991 case TARGET_NR_getpgrp: 8992 return get_errno(getpgrp()); 8993 #endif 8994 case TARGET_NR_setsid: 8995 return get_errno(setsid()); 8996 #ifdef TARGET_NR_sigaction 8997 case TARGET_NR_sigaction: 8998 { 8999 #if defined(TARGET_MIPS) 9000 struct target_sigaction act, oact, *pact, *old_act; 9001 9002 if (arg2) { 9003 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9004 return -TARGET_EFAULT; 9005 act._sa_handler = old_act->_sa_handler; 9006 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 9007 act.sa_flags = old_act->sa_flags; 9008 unlock_user_struct(old_act, arg2, 0); 9009 pact = &act; 9010 } else { 9011 pact = NULL; 9012 } 9013 9014 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9015 9016 if (!is_error(ret) && arg3) { 9017 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9018 return -TARGET_EFAULT; 9019 old_act->_sa_handler = oact._sa_handler; 9020 old_act->sa_flags = oact.sa_flags; 9021 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9022 old_act->sa_mask.sig[1] = 0; 9023 old_act->sa_mask.sig[2] = 0; 9024 old_act->sa_mask.sig[3] = 0; 9025 unlock_user_struct(old_act, arg3, 1); 9026 } 9027 #else 9028 struct target_old_sigaction *old_act; 9029 struct target_sigaction act, oact, *pact; 9030 if (arg2) { 9031 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9032 return -TARGET_EFAULT; 9033 act._sa_handler = old_act->_sa_handler; 9034 target_siginitset(&act.sa_mask, old_act->sa_mask); 9035 act.sa_flags = old_act->sa_flags; 9036 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9037 act.sa_restorer = old_act->sa_restorer; 9038 #endif 9039 unlock_user_struct(old_act, arg2, 0); 9040 pact = &act; 9041 } else { 9042 pact = NULL; 9043 } 9044 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9045 if (!is_error(ret) && arg3) { 9046 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9047 return -TARGET_EFAULT; 9048 old_act->_sa_handler = oact._sa_handler; 9049 old_act->sa_mask = oact.sa_mask.sig[0]; 9050 old_act->sa_flags = oact.sa_flags; 9051 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9052 old_act->sa_restorer = oact.sa_restorer; 9053 #endif 9054 unlock_user_struct(old_act, arg3, 1); 9055 } 9056 #endif 9057 } 9058 return ret; 9059 #endif 9060 case TARGET_NR_rt_sigaction: 9061 { 9062 /* 9063 * For Alpha and SPARC this is a 5 argument syscall, with 9064 * a 'restorer' parameter which must be copied into the 9065 * sa_restorer field of the sigaction struct. 9066 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9067 * and arg5 is the sigsetsize. 9068 */ 9069 #if defined(TARGET_ALPHA) 9070 target_ulong sigsetsize = arg4; 9071 target_ulong restorer = arg5; 9072 #elif defined(TARGET_SPARC) 9073 target_ulong restorer = arg4; 9074 target_ulong sigsetsize = arg5; 9075 #else 9076 target_ulong sigsetsize = arg4; 9077 target_ulong restorer = 0; 9078 #endif 9079 struct target_sigaction *act = NULL; 9080 struct target_sigaction *oact = NULL; 9081 9082 if (sigsetsize != sizeof(target_sigset_t)) { 9083 return -TARGET_EINVAL; 9084 } 9085 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9086 return -TARGET_EFAULT; 9087 } 9088 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9089 ret = -TARGET_EFAULT; 9090 } else { 9091 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9092 if (oact) { 9093 unlock_user_struct(oact, arg3, 1); 9094 } 9095 } 9096 if (act) { 9097 unlock_user_struct(act, arg2, 0); 9098 } 9099 } 9100 return ret; 9101 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9102 case TARGET_NR_sgetmask: 9103 { 9104 sigset_t cur_set; 9105 abi_ulong target_set; 9106 ret = do_sigprocmask(0, NULL, &cur_set); 9107 if (!ret) { 9108 host_to_target_old_sigset(&target_set, &cur_set); 9109 ret = target_set; 9110 } 9111 } 9112 return ret; 9113 #endif 9114 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9115 case TARGET_NR_ssetmask: 9116 { 9117 sigset_t set, oset; 9118 abi_ulong target_set = arg1; 9119 target_to_host_old_sigset(&set, &target_set); 9120 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9121 if (!ret) { 9122 host_to_target_old_sigset(&target_set, &oset); 9123 ret = target_set; 9124 } 9125 } 9126 return ret; 9127 #endif 9128 #ifdef TARGET_NR_sigprocmask 9129 case TARGET_NR_sigprocmask: 9130 { 9131 #if defined(TARGET_ALPHA) 9132 sigset_t set, oldset; 9133 abi_ulong mask; 9134 int how; 9135 9136 switch (arg1) { 9137 case TARGET_SIG_BLOCK: 9138 how = SIG_BLOCK; 9139 break; 9140 case TARGET_SIG_UNBLOCK: 9141 how = SIG_UNBLOCK; 9142 break; 9143 case TARGET_SIG_SETMASK: 9144 how = SIG_SETMASK; 9145 break; 9146 default: 9147 return -TARGET_EINVAL; 9148 } 9149 mask = arg2; 9150 target_to_host_old_sigset(&set, &mask); 9151 9152 ret = do_sigprocmask(how, &set, &oldset); 9153 if (!is_error(ret)) { 9154 host_to_target_old_sigset(&mask, &oldset); 9155 ret = mask; 9156 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ 9157 } 9158 #else 9159 sigset_t set, oldset, *set_ptr; 9160 int how; 9161 9162 if (arg2) { 9163 switch (arg1) { 9164 case TARGET_SIG_BLOCK: 9165 how = SIG_BLOCK; 9166 break; 9167 case TARGET_SIG_UNBLOCK: 9168 how = SIG_UNBLOCK; 9169 break; 9170 case TARGET_SIG_SETMASK: 9171 how = SIG_SETMASK; 9172 break; 9173 default: 9174 return -TARGET_EINVAL; 9175 } 9176 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 9177 return -TARGET_EFAULT; 9178 target_to_host_old_sigset(&set, p); 9179 unlock_user(p, arg2, 0); 9180 set_ptr = &set; 9181 } else { 9182 how = 0; 9183 set_ptr = NULL; 9184 } 9185 ret = do_sigprocmask(how, set_ptr, &oldset); 9186 if (!is_error(ret) && arg3) { 9187 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9188 return -TARGET_EFAULT; 9189 host_to_target_old_sigset(p, &oldset); 9190 unlock_user(p, arg3, sizeof(target_sigset_t)); 9191 } 9192 #endif 9193 } 9194 return ret; 9195 #endif 9196 case TARGET_NR_rt_sigprocmask: 9197 { 9198 int how = arg1; 9199 sigset_t set, oldset, *set_ptr; 9200 9201 if (arg4 != sizeof(target_sigset_t)) { 9202 return -TARGET_EINVAL; 9203 } 9204 9205 if (arg2) { 9206 switch(how) { 9207 case TARGET_SIG_BLOCK: 9208 how = SIG_BLOCK; 9209 break; 9210 case TARGET_SIG_UNBLOCK: 9211 how = SIG_UNBLOCK; 9212 break; 9213 case TARGET_SIG_SETMASK: 9214 how = SIG_SETMASK; 9215 break; 9216 default: 9217 return -TARGET_EINVAL; 9218 } 9219 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 9220 return -TARGET_EFAULT; 9221 target_to_host_sigset(&set, p); 9222 unlock_user(p, arg2, 0); 9223 set_ptr = &set; 9224 } else { 9225 how = 0; 9226 set_ptr = NULL; 9227 } 9228 ret = do_sigprocmask(how, set_ptr, &oldset); 9229 if (!is_error(ret) && arg3) { 9230 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9231 return -TARGET_EFAULT; 9232 host_to_target_sigset(p, &oldset); 9233 unlock_user(p, arg3, sizeof(target_sigset_t)); 9234 } 9235 } 9236 return ret; 9237 #ifdef TARGET_NR_sigpending 9238 case TARGET_NR_sigpending: 9239 { 9240 sigset_t set; 9241 ret = get_errno(sigpending(&set)); 9242 if (!is_error(ret)) { 9243 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9244 return -TARGET_EFAULT; 9245 host_to_target_old_sigset(p, &set); 9246 unlock_user(p, arg1, sizeof(target_sigset_t)); 9247 } 9248 } 9249 return ret; 9250 #endif 9251 case TARGET_NR_rt_sigpending: 9252 { 9253 sigset_t set; 9254 9255 /* Yes, this check is >, not != like most. We follow the kernel's 9256 * logic and it does it like this because it implements 9257 * NR_sigpending through the same code path, and in that case 9258 * the old_sigset_t is smaller in size. 9259 */ 9260 if (arg2 > sizeof(target_sigset_t)) { 9261 return -TARGET_EINVAL; 9262 } 9263 9264 ret = get_errno(sigpending(&set)); 9265 if (!is_error(ret)) { 9266 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9267 return -TARGET_EFAULT; 9268 host_to_target_sigset(p, &set); 9269 unlock_user(p, arg1, sizeof(target_sigset_t)); 9270 } 9271 } 9272 return ret; 9273 #ifdef TARGET_NR_sigsuspend 9274 case TARGET_NR_sigsuspend: 9275 { 9276 TaskState *ts = cpu->opaque; 9277 #if defined(TARGET_ALPHA) 9278 abi_ulong mask = arg1; 9279 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask); 9280 #else 9281 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9282 return -TARGET_EFAULT; 9283 target_to_host_old_sigset(&ts->sigsuspend_mask, p); 9284 unlock_user(p, arg1, 0); 9285 #endif 9286 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 9287 SIGSET_T_SIZE)); 9288 if (ret != -TARGET_ERESTARTSYS) { 9289 ts->in_sigsuspend = 1; 9290 } 9291 } 9292 return ret; 9293 #endif 9294 case TARGET_NR_rt_sigsuspend: 9295 { 9296 TaskState *ts = cpu->opaque; 9297 9298 if (arg2 != sizeof(target_sigset_t)) { 9299 return -TARGET_EINVAL; 9300 } 9301 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9302 return -TARGET_EFAULT; 9303 target_to_host_sigset(&ts->sigsuspend_mask, p); 9304 unlock_user(p, arg1, 0); 9305 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 9306 SIGSET_T_SIZE)); 9307 if (ret != -TARGET_ERESTARTSYS) { 9308 ts->in_sigsuspend = 1; 9309 } 9310 } 9311 return ret; 9312 #ifdef TARGET_NR_rt_sigtimedwait 9313 case TARGET_NR_rt_sigtimedwait: 9314 { 9315 sigset_t set; 9316 struct timespec uts, *puts; 9317 siginfo_t uinfo; 9318 9319 if (arg4 != sizeof(target_sigset_t)) { 9320 return -TARGET_EINVAL; 9321 } 9322 9323 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9324 return -TARGET_EFAULT; 9325 target_to_host_sigset(&set, p); 9326 unlock_user(p, arg1, 0); 9327 if (arg3) { 9328 puts = &uts; 9329 if (target_to_host_timespec(puts, arg3)) { 9330 return -TARGET_EFAULT; 9331 } 9332 } else { 9333 puts = NULL; 9334 } 9335 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9336 SIGSET_T_SIZE)); 9337 if (!is_error(ret)) { 9338 if (arg2) { 9339 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 9340 0); 9341 if (!p) { 9342 return -TARGET_EFAULT; 9343 } 9344 host_to_target_siginfo(p, &uinfo); 9345 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9346 } 9347 ret = host_to_target_signal(ret); 9348 } 9349 } 9350 return ret; 9351 #endif 9352 #ifdef TARGET_NR_rt_sigtimedwait_time64 9353 case TARGET_NR_rt_sigtimedwait_time64: 9354 { 9355 sigset_t set; 9356 struct timespec uts, *puts; 9357 siginfo_t uinfo; 9358 9359 if (arg4 != sizeof(target_sigset_t)) { 9360 return -TARGET_EINVAL; 9361 } 9362 9363 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 9364 if (!p) { 9365 return -TARGET_EFAULT; 9366 } 9367 target_to_host_sigset(&set, p); 9368 unlock_user(p, arg1, 0); 9369 if (arg3) { 9370 puts = &uts; 9371 if (target_to_host_timespec64(puts, arg3)) { 9372 return -TARGET_EFAULT; 9373 } 9374 } else { 9375 puts = NULL; 9376 } 9377 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9378 SIGSET_T_SIZE)); 9379 if (!is_error(ret)) { 9380 if (arg2) { 9381 p = lock_user(VERIFY_WRITE, arg2, 9382 sizeof(target_siginfo_t), 0); 9383 if (!p) { 9384 return -TARGET_EFAULT; 9385 } 9386 host_to_target_siginfo(p, &uinfo); 9387 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9388 } 9389 ret = host_to_target_signal(ret); 9390 } 9391 } 9392 return ret; 9393 #endif 9394 case TARGET_NR_rt_sigqueueinfo: 9395 { 9396 siginfo_t uinfo; 9397 9398 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9399 if (!p) { 9400 return -TARGET_EFAULT; 9401 } 9402 target_to_host_siginfo(&uinfo, p); 9403 unlock_user(p, arg3, 0); 9404 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); 9405 } 9406 return ret; 9407 case TARGET_NR_rt_tgsigqueueinfo: 9408 { 9409 siginfo_t uinfo; 9410 9411 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 9412 if (!p) { 9413 return -TARGET_EFAULT; 9414 } 9415 target_to_host_siginfo(&uinfo, p); 9416 unlock_user(p, arg4, 0); 9417 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo)); 9418 } 9419 return ret; 9420 #ifdef TARGET_NR_sigreturn 9421 case TARGET_NR_sigreturn: 9422 if (block_signals()) { 9423 return -TARGET_ERESTARTSYS; 9424 } 9425 return do_sigreturn(cpu_env); 9426 #endif 9427 case TARGET_NR_rt_sigreturn: 9428 if (block_signals()) { 9429 return -TARGET_ERESTARTSYS; 9430 } 9431 return do_rt_sigreturn(cpu_env); 9432 case TARGET_NR_sethostname: 9433 if (!(p = lock_user_string(arg1))) 9434 return -TARGET_EFAULT; 9435 ret = get_errno(sethostname(p, arg2)); 9436 unlock_user(p, arg1, 0); 9437 return ret; 9438 #ifdef TARGET_NR_setrlimit 9439 case TARGET_NR_setrlimit: 9440 { 9441 int resource = target_to_host_resource(arg1); 9442 struct target_rlimit *target_rlim; 9443 struct rlimit rlim; 9444 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 9445 return -TARGET_EFAULT; 9446 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 9447 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 9448 unlock_user_struct(target_rlim, arg2, 0); 9449 /* 9450 * If we just passed through resource limit settings for memory then 9451 * they would also apply to QEMU's own allocations, and QEMU will 9452 * crash or hang or die if its allocations fail. Ideally we would 9453 * track the guest allocations in QEMU and apply the limits ourselves. 9454 * For now, just tell the guest the call succeeded but don't actually 9455 * limit anything. 9456 */ 9457 if (resource != RLIMIT_AS && 9458 resource != RLIMIT_DATA && 9459 resource != RLIMIT_STACK) { 9460 return get_errno(setrlimit(resource, &rlim)); 9461 } else { 9462 return 0; 9463 } 9464 } 9465 #endif 9466 #ifdef TARGET_NR_getrlimit 9467 case TARGET_NR_getrlimit: 9468 { 9469 int resource = target_to_host_resource(arg1); 9470 struct target_rlimit *target_rlim; 9471 struct rlimit rlim; 9472 9473 ret = get_errno(getrlimit(resource, &rlim)); 9474 if (!is_error(ret)) { 9475 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 9476 return -TARGET_EFAULT; 9477 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 9478 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 9479 unlock_user_struct(target_rlim, arg2, 1); 9480 } 9481 } 9482 return ret; 9483 #endif 9484 case TARGET_NR_getrusage: 9485 { 9486 struct rusage rusage; 9487 ret = get_errno(getrusage(arg1, &rusage)); 9488 if (!is_error(ret)) { 9489 ret = host_to_target_rusage(arg2, &rusage); 9490 } 9491 } 9492 return ret; 9493 #if defined(TARGET_NR_gettimeofday) 9494 case TARGET_NR_gettimeofday: 9495 { 9496 struct timeval tv; 9497 struct timezone tz; 9498 9499 ret = get_errno(gettimeofday(&tv, &tz)); 9500 if (!is_error(ret)) { 9501 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 9502 return -TARGET_EFAULT; 9503 } 9504 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 9505 return -TARGET_EFAULT; 9506 } 9507 } 9508 } 9509 return ret; 9510 #endif 9511 #if defined(TARGET_NR_settimeofday) 9512 case TARGET_NR_settimeofday: 9513 { 9514 struct timeval tv, *ptv = NULL; 9515 struct timezone tz, *ptz = NULL; 9516 9517 if (arg1) { 9518 if (copy_from_user_timeval(&tv, arg1)) { 9519 return -TARGET_EFAULT; 9520 } 9521 ptv = &tv; 9522 } 9523 9524 if (arg2) { 9525 if (copy_from_user_timezone(&tz, arg2)) { 9526 return -TARGET_EFAULT; 9527 } 9528 ptz = &tz; 9529 } 9530 9531 return get_errno(settimeofday(ptv, ptz)); 9532 } 9533 #endif 9534 #if defined(TARGET_NR_select) 9535 case TARGET_NR_select: 9536 #if defined(TARGET_WANT_NI_OLD_SELECT) 9537 /* some architectures used to have old_select here 9538 * but now ENOSYS it. 9539 */ 9540 ret = -TARGET_ENOSYS; 9541 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 9542 ret = do_old_select(arg1); 9543 #else 9544 ret = do_select(arg1, arg2, arg3, arg4, arg5); 9545 #endif 9546 return ret; 9547 #endif 9548 #ifdef TARGET_NR_pselect6 9549 case TARGET_NR_pselect6: 9550 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 9551 #endif 9552 #ifdef TARGET_NR_pselect6_time64 9553 case TARGET_NR_pselect6_time64: 9554 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 9555 #endif 9556 #ifdef TARGET_NR_symlink 9557 case TARGET_NR_symlink: 9558 { 9559 void *p2; 9560 p = lock_user_string(arg1); 9561 p2 = lock_user_string(arg2); 9562 if (!p || !p2) 9563 ret = -TARGET_EFAULT; 9564 else 9565 ret = get_errno(symlink(p, p2)); 9566 unlock_user(p2, arg2, 0); 9567 unlock_user(p, arg1, 0); 9568 } 9569 return ret; 9570 #endif 9571 #if defined(TARGET_NR_symlinkat) 9572 case TARGET_NR_symlinkat: 9573 { 9574 void *p2; 9575 p = lock_user_string(arg1); 9576 p2 = lock_user_string(arg3); 9577 if (!p || !p2) 9578 ret = -TARGET_EFAULT; 9579 else 9580 ret = get_errno(symlinkat(p, arg2, p2)); 9581 unlock_user(p2, arg3, 0); 9582 unlock_user(p, arg1, 0); 9583 } 9584 return ret; 9585 #endif 9586 #ifdef TARGET_NR_readlink 9587 case TARGET_NR_readlink: 9588 { 9589 void *p2; 9590 p = lock_user_string(arg1); 9591 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9592 if (!p || !p2) { 9593 ret = -TARGET_EFAULT; 9594 } else if (!arg3) { 9595 /* Short circuit this for the magic exe check. */ 9596 ret = -TARGET_EINVAL; 9597 } else if (is_proc_myself((const char *)p, "exe")) { 9598 char real[PATH_MAX], *temp; 9599 temp = realpath(exec_path, real); 9600 /* Return value is # of bytes that we wrote to the buffer. */ 9601 if (temp == NULL) { 9602 ret = get_errno(-1); 9603 } else { 9604 /* Don't worry about sign mismatch as earlier mapping 9605 * logic would have thrown a bad address error. */ 9606 ret = MIN(strlen(real), arg3); 9607 /* We cannot NUL terminate the string. */ 9608 memcpy(p2, real, ret); 9609 } 9610 } else { 9611 ret = get_errno(readlink(path(p), p2, arg3)); 9612 } 9613 unlock_user(p2, arg2, ret); 9614 unlock_user(p, arg1, 0); 9615 } 9616 return ret; 9617 #endif 9618 #if defined(TARGET_NR_readlinkat) 9619 case TARGET_NR_readlinkat: 9620 { 9621 void *p2; 9622 p = lock_user_string(arg2); 9623 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9624 if (!p || !p2) { 9625 ret = -TARGET_EFAULT; 9626 } else if (is_proc_myself((const char *)p, "exe")) { 9627 char real[PATH_MAX], *temp; 9628 temp = realpath(exec_path, real); 9629 ret = temp == NULL ? get_errno(-1) : strlen(real) ; 9630 snprintf((char *)p2, arg4, "%s", real); 9631 } else { 9632 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9633 } 9634 unlock_user(p2, arg3, ret); 9635 unlock_user(p, arg2, 0); 9636 } 9637 return ret; 9638 #endif 9639 #ifdef TARGET_NR_swapon 9640 case TARGET_NR_swapon: 9641 if (!(p = lock_user_string(arg1))) 9642 return -TARGET_EFAULT; 9643 ret = get_errno(swapon(p, arg2)); 9644 unlock_user(p, arg1, 0); 9645 return ret; 9646 #endif 9647 case TARGET_NR_reboot: 9648 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9649 /* arg4 must be ignored in all other cases */ 9650 p = lock_user_string(arg4); 9651 if (!p) { 9652 return -TARGET_EFAULT; 9653 } 9654 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9655 unlock_user(p, arg4, 0); 9656 } else { 9657 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9658 } 9659 return ret; 9660 #ifdef TARGET_NR_mmap 9661 case TARGET_NR_mmap: 9662 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9663 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9664 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9665 || defined(TARGET_S390X) 9666 { 9667 abi_ulong *v; 9668 abi_ulong v1, v2, v3, v4, v5, v6; 9669 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9670 return -TARGET_EFAULT; 9671 v1 = tswapal(v[0]); 9672 v2 = tswapal(v[1]); 9673 v3 = tswapal(v[2]); 9674 v4 = tswapal(v[3]); 9675 v5 = tswapal(v[4]); 9676 v6 = tswapal(v[5]); 9677 unlock_user(v, arg1, 0); 9678 ret = get_errno(target_mmap(v1, v2, v3, 9679 target_to_host_bitmask(v4, mmap_flags_tbl), 9680 v5, v6)); 9681 } 9682 #else 9683 /* mmap pointers are always untagged */ 9684 ret = get_errno(target_mmap(arg1, arg2, arg3, 9685 target_to_host_bitmask(arg4, mmap_flags_tbl), 9686 arg5, 9687 arg6)); 9688 #endif 9689 return ret; 9690 #endif 9691 #ifdef TARGET_NR_mmap2 9692 case TARGET_NR_mmap2: 9693 #ifndef MMAP_SHIFT 9694 #define MMAP_SHIFT 12 9695 #endif 9696 ret = target_mmap(arg1, arg2, arg3, 9697 target_to_host_bitmask(arg4, mmap_flags_tbl), 9698 arg5, arg6 << MMAP_SHIFT); 9699 return get_errno(ret); 9700 #endif 9701 case TARGET_NR_munmap: 9702 arg1 = cpu_untagged_addr(cpu, arg1); 9703 return get_errno(target_munmap(arg1, arg2)); 9704 case TARGET_NR_mprotect: 9705 arg1 = cpu_untagged_addr(cpu, arg1); 9706 { 9707 TaskState *ts = cpu->opaque; 9708 /* Special hack to detect libc making the stack executable. */ 9709 if ((arg3 & PROT_GROWSDOWN) 9710 && arg1 >= ts->info->stack_limit 9711 && arg1 <= ts->info->start_stack) { 9712 arg3 &= ~PROT_GROWSDOWN; 9713 arg2 = arg2 + arg1 - ts->info->stack_limit; 9714 arg1 = ts->info->stack_limit; 9715 } 9716 } 9717 return get_errno(target_mprotect(arg1, arg2, arg3)); 9718 #ifdef TARGET_NR_mremap 9719 case TARGET_NR_mremap: 9720 arg1 = cpu_untagged_addr(cpu, arg1); 9721 /* mremap new_addr (arg5) is always untagged */ 9722 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 9723 #endif 9724 /* ??? msync/mlock/munlock are broken for softmmu. */ 9725 #ifdef TARGET_NR_msync 9726 case TARGET_NR_msync: 9727 return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); 9728 #endif 9729 #ifdef TARGET_NR_mlock 9730 case TARGET_NR_mlock: 9731 return get_errno(mlock(g2h(cpu, arg1), arg2)); 9732 #endif 9733 #ifdef TARGET_NR_munlock 9734 case TARGET_NR_munlock: 9735 return get_errno(munlock(g2h(cpu, arg1), arg2)); 9736 #endif 9737 #ifdef TARGET_NR_mlockall 9738 case TARGET_NR_mlockall: 9739 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 9740 #endif 9741 #ifdef TARGET_NR_munlockall 9742 case TARGET_NR_munlockall: 9743 return get_errno(munlockall()); 9744 #endif 9745 #ifdef TARGET_NR_truncate 9746 case TARGET_NR_truncate: 9747 if (!(p = lock_user_string(arg1))) 9748 return -TARGET_EFAULT; 9749 ret = get_errno(truncate(p, arg2)); 9750 unlock_user(p, arg1, 0); 9751 return ret; 9752 #endif 9753 #ifdef TARGET_NR_ftruncate 9754 case TARGET_NR_ftruncate: 9755 return get_errno(ftruncate(arg1, arg2)); 9756 #endif 9757 case TARGET_NR_fchmod: 9758 return get_errno(fchmod(arg1, arg2)); 9759 #if defined(TARGET_NR_fchmodat) 9760 case TARGET_NR_fchmodat: 9761 if (!(p = lock_user_string(arg2))) 9762 return -TARGET_EFAULT; 9763 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 9764 unlock_user(p, arg2, 0); 9765 return ret; 9766 #endif 9767 case TARGET_NR_getpriority: 9768 /* Note that negative values are valid for getpriority, so we must 9769 differentiate based on errno settings. */ 9770 errno = 0; 9771 ret = getpriority(arg1, arg2); 9772 if (ret == -1 && errno != 0) { 9773 return -host_to_target_errno(errno); 9774 } 9775 #ifdef TARGET_ALPHA 9776 /* Return value is the unbiased priority. Signal no error. */ 9777 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; 9778 #else 9779 /* Return value is a biased priority to avoid negative numbers. */ 9780 ret = 20 - ret; 9781 #endif 9782 return ret; 9783 case TARGET_NR_setpriority: 9784 return get_errno(setpriority(arg1, arg2, arg3)); 9785 #ifdef TARGET_NR_statfs 9786 case TARGET_NR_statfs: 9787 if (!(p = lock_user_string(arg1))) { 9788 return -TARGET_EFAULT; 9789 } 9790 ret = get_errno(statfs(path(p), &stfs)); 9791 unlock_user(p, arg1, 0); 9792 convert_statfs: 9793 if (!is_error(ret)) { 9794 struct target_statfs *target_stfs; 9795 9796 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 9797 return -TARGET_EFAULT; 9798 __put_user(stfs.f_type, &target_stfs->f_type); 9799 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9800 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9801 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9802 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9803 __put_user(stfs.f_files, &target_stfs->f_files); 9804 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9805 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9806 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9807 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9808 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9809 #ifdef _STATFS_F_FLAGS 9810 __put_user(stfs.f_flags, &target_stfs->f_flags); 9811 #else 9812 __put_user(0, &target_stfs->f_flags); 9813 #endif 9814 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9815 unlock_user_struct(target_stfs, arg2, 1); 9816 } 9817 return ret; 9818 #endif 9819 #ifdef TARGET_NR_fstatfs 9820 case TARGET_NR_fstatfs: 9821 ret = get_errno(fstatfs(arg1, &stfs)); 9822 goto convert_statfs; 9823 #endif 9824 #ifdef TARGET_NR_statfs64 9825 case TARGET_NR_statfs64: 9826 if (!(p = lock_user_string(arg1))) { 9827 return -TARGET_EFAULT; 9828 } 9829 ret = get_errno(statfs(path(p), &stfs)); 9830 unlock_user(p, arg1, 0); 9831 convert_statfs64: 9832 if (!is_error(ret)) { 9833 struct target_statfs64 *target_stfs; 9834 9835 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 9836 return -TARGET_EFAULT; 9837 __put_user(stfs.f_type, &target_stfs->f_type); 9838 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9839 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9840 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9841 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9842 __put_user(stfs.f_files, &target_stfs->f_files); 9843 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9844 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9845 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9846 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9847 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9848 #ifdef _STATFS_F_FLAGS 9849 __put_user(stfs.f_flags, &target_stfs->f_flags); 9850 #else 9851 __put_user(0, &target_stfs->f_flags); 9852 #endif 9853 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9854 unlock_user_struct(target_stfs, arg3, 1); 9855 } 9856 return ret; 9857 case TARGET_NR_fstatfs64: 9858 ret = get_errno(fstatfs(arg1, &stfs)); 9859 goto convert_statfs64; 9860 #endif 9861 #ifdef TARGET_NR_socketcall 9862 case TARGET_NR_socketcall: 9863 return do_socketcall(arg1, arg2); 9864 #endif 9865 #ifdef TARGET_NR_accept 9866 case TARGET_NR_accept: 9867 return do_accept4(arg1, arg2, arg3, 0); 9868 #endif 9869 #ifdef TARGET_NR_accept4 9870 case TARGET_NR_accept4: 9871 return do_accept4(arg1, arg2, arg3, arg4); 9872 #endif 9873 #ifdef TARGET_NR_bind 9874 case TARGET_NR_bind: 9875 return do_bind(arg1, arg2, arg3); 9876 #endif 9877 #ifdef TARGET_NR_connect 9878 case TARGET_NR_connect: 9879 return do_connect(arg1, arg2, arg3); 9880 #endif 9881 #ifdef TARGET_NR_getpeername 9882 case TARGET_NR_getpeername: 9883 return do_getpeername(arg1, arg2, arg3); 9884 #endif 9885 #ifdef TARGET_NR_getsockname 9886 case TARGET_NR_getsockname: 9887 return do_getsockname(arg1, arg2, arg3); 9888 #endif 9889 #ifdef TARGET_NR_getsockopt 9890 case TARGET_NR_getsockopt: 9891 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 9892 #endif 9893 #ifdef TARGET_NR_listen 9894 case TARGET_NR_listen: 9895 return get_errno(listen(arg1, arg2)); 9896 #endif 9897 #ifdef TARGET_NR_recv 9898 case TARGET_NR_recv: 9899 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 9900 #endif 9901 #ifdef TARGET_NR_recvfrom 9902 case TARGET_NR_recvfrom: 9903 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 9904 #endif 9905 #ifdef TARGET_NR_recvmsg 9906 case TARGET_NR_recvmsg: 9907 return do_sendrecvmsg(arg1, arg2, arg3, 0); 9908 #endif 9909 #ifdef TARGET_NR_send 9910 case TARGET_NR_send: 9911 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 9912 #endif 9913 #ifdef TARGET_NR_sendmsg 9914 case TARGET_NR_sendmsg: 9915 return do_sendrecvmsg(arg1, arg2, arg3, 1); 9916 #endif 9917 #ifdef TARGET_NR_sendmmsg 9918 case TARGET_NR_sendmmsg: 9919 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 9920 #endif 9921 #ifdef TARGET_NR_recvmmsg 9922 case TARGET_NR_recvmmsg: 9923 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 9924 #endif 9925 #ifdef TARGET_NR_sendto 9926 case TARGET_NR_sendto: 9927 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 9928 #endif 9929 #ifdef TARGET_NR_shutdown 9930 case TARGET_NR_shutdown: 9931 return get_errno(shutdown(arg1, arg2)); 9932 #endif 9933 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 9934 case TARGET_NR_getrandom: 9935 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 9936 if (!p) { 9937 return -TARGET_EFAULT; 9938 } 9939 ret = get_errno(getrandom(p, arg2, arg3)); 9940 unlock_user(p, arg1, ret); 9941 return ret; 9942 #endif 9943 #ifdef TARGET_NR_socket 9944 case TARGET_NR_socket: 9945 return do_socket(arg1, arg2, arg3); 9946 #endif 9947 #ifdef TARGET_NR_socketpair 9948 case TARGET_NR_socketpair: 9949 return do_socketpair(arg1, arg2, arg3, arg4); 9950 #endif 9951 #ifdef TARGET_NR_setsockopt 9952 case TARGET_NR_setsockopt: 9953 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 9954 #endif 9955 #if defined(TARGET_NR_syslog) 9956 case TARGET_NR_syslog: 9957 { 9958 int len = arg2; 9959 9960 switch (arg1) { 9961 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 9962 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 9963 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 9964 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 9965 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 9966 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 9967 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 9968 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 9969 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 9970 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 9971 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 9972 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 9973 { 9974 if (len < 0) { 9975 return -TARGET_EINVAL; 9976 } 9977 if (len == 0) { 9978 return 0; 9979 } 9980 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9981 if (!p) { 9982 return -TARGET_EFAULT; 9983 } 9984 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 9985 unlock_user(p, arg2, arg3); 9986 } 9987 return ret; 9988 default: 9989 return -TARGET_EINVAL; 9990 } 9991 } 9992 break; 9993 #endif 9994 case TARGET_NR_setitimer: 9995 { 9996 struct itimerval value, ovalue, *pvalue; 9997 9998 if (arg2) { 9999 pvalue = &value; 10000 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 10001 || copy_from_user_timeval(&pvalue->it_value, 10002 arg2 + sizeof(struct target_timeval))) 10003 return -TARGET_EFAULT; 10004 } else { 10005 pvalue = NULL; 10006 } 10007 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 10008 if (!is_error(ret) && arg3) { 10009 if (copy_to_user_timeval(arg3, 10010 &ovalue.it_interval) 10011 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10012 &ovalue.it_value)) 10013 return -TARGET_EFAULT; 10014 } 10015 } 10016 return ret; 10017 case TARGET_NR_getitimer: 10018 { 10019 struct itimerval value; 10020 10021 ret = get_errno(getitimer(arg1, &value)); 10022 if (!is_error(ret) && arg2) { 10023 if (copy_to_user_timeval(arg2, 10024 &value.it_interval) 10025 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10026 &value.it_value)) 10027 return -TARGET_EFAULT; 10028 } 10029 } 10030 return ret; 10031 #ifdef TARGET_NR_stat 10032 case TARGET_NR_stat: 10033 if (!(p = lock_user_string(arg1))) { 10034 return -TARGET_EFAULT; 10035 } 10036 ret = get_errno(stat(path(p), &st)); 10037 unlock_user(p, arg1, 0); 10038 goto do_stat; 10039 #endif 10040 #ifdef TARGET_NR_lstat 10041 case TARGET_NR_lstat: 10042 if (!(p = lock_user_string(arg1))) { 10043 return -TARGET_EFAULT; 10044 } 10045 ret = get_errno(lstat(path(p), &st)); 10046 unlock_user(p, arg1, 0); 10047 goto do_stat; 10048 #endif 10049 #ifdef TARGET_NR_fstat 10050 case TARGET_NR_fstat: 10051 { 10052 ret = get_errno(fstat(arg1, &st)); 10053 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10054 do_stat: 10055 #endif 10056 if (!is_error(ret)) { 10057 struct target_stat *target_st; 10058 10059 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10060 return -TARGET_EFAULT; 10061 memset(target_st, 0, sizeof(*target_st)); 10062 __put_user(st.st_dev, &target_st->st_dev); 10063 __put_user(st.st_ino, &target_st->st_ino); 10064 __put_user(st.st_mode, &target_st->st_mode); 10065 __put_user(st.st_uid, &target_st->st_uid); 10066 __put_user(st.st_gid, &target_st->st_gid); 10067 __put_user(st.st_nlink, &target_st->st_nlink); 10068 __put_user(st.st_rdev, &target_st->st_rdev); 10069 __put_user(st.st_size, &target_st->st_size); 10070 __put_user(st.st_blksize, &target_st->st_blksize); 10071 __put_user(st.st_blocks, &target_st->st_blocks); 10072 __put_user(st.st_atime, &target_st->target_st_atime); 10073 __put_user(st.st_mtime, &target_st->target_st_mtime); 10074 __put_user(st.st_ctime, &target_st->target_st_ctime); 10075 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC) 10076 __put_user(st.st_atim.tv_nsec, 10077 &target_st->target_st_atime_nsec); 10078 __put_user(st.st_mtim.tv_nsec, 10079 &target_st->target_st_mtime_nsec); 10080 __put_user(st.st_ctim.tv_nsec, 10081 &target_st->target_st_ctime_nsec); 10082 #endif 10083 unlock_user_struct(target_st, arg2, 1); 10084 } 10085 } 10086 return ret; 10087 #endif 10088 case TARGET_NR_vhangup: 10089 return get_errno(vhangup()); 10090 #ifdef TARGET_NR_syscall 10091 case TARGET_NR_syscall: 10092 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10093 arg6, arg7, arg8, 0); 10094 #endif 10095 #if defined(TARGET_NR_wait4) 10096 case TARGET_NR_wait4: 10097 { 10098 int status; 10099 abi_long status_ptr = arg2; 10100 struct rusage rusage, *rusage_ptr; 10101 abi_ulong target_rusage = arg4; 10102 abi_long rusage_err; 10103 if (target_rusage) 10104 rusage_ptr = &rusage; 10105 else 10106 rusage_ptr = NULL; 10107 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10108 if (!is_error(ret)) { 10109 if (status_ptr && ret) { 10110 status = host_to_target_waitstatus(status); 10111 if (put_user_s32(status, status_ptr)) 10112 return -TARGET_EFAULT; 10113 } 10114 if (target_rusage) { 10115 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10116 if (rusage_err) { 10117 ret = rusage_err; 10118 } 10119 } 10120 } 10121 } 10122 return ret; 10123 #endif 10124 #ifdef TARGET_NR_swapoff 10125 case TARGET_NR_swapoff: 10126 if (!(p = lock_user_string(arg1))) 10127 return -TARGET_EFAULT; 10128 ret = get_errno(swapoff(p)); 10129 unlock_user(p, arg1, 0); 10130 return ret; 10131 #endif 10132 case TARGET_NR_sysinfo: 10133 { 10134 struct target_sysinfo *target_value; 10135 struct sysinfo value; 10136 ret = get_errno(sysinfo(&value)); 10137 if (!is_error(ret) && arg1) 10138 { 10139 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10140 return -TARGET_EFAULT; 10141 __put_user(value.uptime, &target_value->uptime); 10142 __put_user(value.loads[0], &target_value->loads[0]); 10143 __put_user(value.loads[1], &target_value->loads[1]); 10144 __put_user(value.loads[2], &target_value->loads[2]); 10145 __put_user(value.totalram, &target_value->totalram); 10146 __put_user(value.freeram, &target_value->freeram); 10147 __put_user(value.sharedram, &target_value->sharedram); 10148 __put_user(value.bufferram, &target_value->bufferram); 10149 __put_user(value.totalswap, &target_value->totalswap); 10150 __put_user(value.freeswap, &target_value->freeswap); 10151 __put_user(value.procs, &target_value->procs); 10152 __put_user(value.totalhigh, &target_value->totalhigh); 10153 __put_user(value.freehigh, &target_value->freehigh); 10154 __put_user(value.mem_unit, &target_value->mem_unit); 10155 unlock_user_struct(target_value, arg1, 1); 10156 } 10157 } 10158 return ret; 10159 #ifdef TARGET_NR_ipc 10160 case TARGET_NR_ipc: 10161 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10162 #endif 10163 #ifdef TARGET_NR_semget 10164 case TARGET_NR_semget: 10165 return get_errno(semget(arg1, arg2, arg3)); 10166 #endif 10167 #ifdef TARGET_NR_semop 10168 case TARGET_NR_semop: 10169 return do_semtimedop(arg1, arg2, arg3, 0, false); 10170 #endif 10171 #ifdef TARGET_NR_semtimedop 10172 case TARGET_NR_semtimedop: 10173 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10174 #endif 10175 #ifdef TARGET_NR_semtimedop_time64 10176 case TARGET_NR_semtimedop_time64: 10177 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10178 #endif 10179 #ifdef TARGET_NR_semctl 10180 case TARGET_NR_semctl: 10181 return do_semctl(arg1, arg2, arg3, arg4); 10182 #endif 10183 #ifdef TARGET_NR_msgctl 10184 case TARGET_NR_msgctl: 10185 return do_msgctl(arg1, arg2, arg3); 10186 #endif 10187 #ifdef TARGET_NR_msgget 10188 case TARGET_NR_msgget: 10189 return get_errno(msgget(arg1, arg2)); 10190 #endif 10191 #ifdef TARGET_NR_msgrcv 10192 case TARGET_NR_msgrcv: 10193 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10194 #endif 10195 #ifdef TARGET_NR_msgsnd 10196 case TARGET_NR_msgsnd: 10197 return do_msgsnd(arg1, arg2, arg3, arg4); 10198 #endif 10199 #ifdef TARGET_NR_shmget 10200 case TARGET_NR_shmget: 10201 return get_errno(shmget(arg1, arg2, arg3)); 10202 #endif 10203 #ifdef TARGET_NR_shmctl 10204 case TARGET_NR_shmctl: 10205 return do_shmctl(arg1, arg2, arg3); 10206 #endif 10207 #ifdef TARGET_NR_shmat 10208 case TARGET_NR_shmat: 10209 return do_shmat(cpu_env, arg1, arg2, arg3); 10210 #endif 10211 #ifdef TARGET_NR_shmdt 10212 case TARGET_NR_shmdt: 10213 return do_shmdt(arg1); 10214 #endif 10215 case TARGET_NR_fsync: 10216 return get_errno(fsync(arg1)); 10217 case TARGET_NR_clone: 10218 /* Linux manages to have three different orderings for its 10219 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 10220 * match the kernel's CONFIG_CLONE_* settings. 10221 * Microblaze is further special in that it uses a sixth 10222 * implicit argument to clone for the TLS pointer. 10223 */ 10224 #if defined(TARGET_MICROBLAZE) 10225 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 10226 #elif defined(TARGET_CLONE_BACKWARDS) 10227 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 10228 #elif defined(TARGET_CLONE_BACKWARDS2) 10229 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 10230 #else 10231 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 10232 #endif 10233 return ret; 10234 #ifdef __NR_exit_group 10235 /* new thread calls */ 10236 case TARGET_NR_exit_group: 10237 preexit_cleanup(cpu_env, arg1); 10238 return get_errno(exit_group(arg1)); 10239 #endif 10240 case TARGET_NR_setdomainname: 10241 if (!(p = lock_user_string(arg1))) 10242 return -TARGET_EFAULT; 10243 ret = get_errno(setdomainname(p, arg2)); 10244 unlock_user(p, arg1, 0); 10245 return ret; 10246 case TARGET_NR_uname: 10247 /* no need to transcode because we use the linux syscall */ 10248 { 10249 struct new_utsname * buf; 10250 10251 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 10252 return -TARGET_EFAULT; 10253 ret = get_errno(sys_uname(buf)); 10254 if (!is_error(ret)) { 10255 /* Overwrite the native machine name with whatever is being 10256 emulated. */ 10257 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 10258 sizeof(buf->machine)); 10259 /* Allow the user to override the reported release. */ 10260 if (qemu_uname_release && *qemu_uname_release) { 10261 g_strlcpy(buf->release, qemu_uname_release, 10262 sizeof(buf->release)); 10263 } 10264 } 10265 unlock_user_struct(buf, arg1, 1); 10266 } 10267 return ret; 10268 #ifdef TARGET_I386 10269 case TARGET_NR_modify_ldt: 10270 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 10271 #if !defined(TARGET_X86_64) 10272 case TARGET_NR_vm86: 10273 return do_vm86(cpu_env, arg1, arg2); 10274 #endif 10275 #endif 10276 #if defined(TARGET_NR_adjtimex) 10277 case TARGET_NR_adjtimex: 10278 { 10279 struct timex host_buf; 10280 10281 if (target_to_host_timex(&host_buf, arg1) != 0) { 10282 return -TARGET_EFAULT; 10283 } 10284 ret = get_errno(adjtimex(&host_buf)); 10285 if (!is_error(ret)) { 10286 if (host_to_target_timex(arg1, &host_buf) != 0) { 10287 return -TARGET_EFAULT; 10288 } 10289 } 10290 } 10291 return ret; 10292 #endif 10293 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 10294 case TARGET_NR_clock_adjtime: 10295 { 10296 struct timex htx, *phtx = &htx; 10297 10298 if (target_to_host_timex(phtx, arg2) != 0) { 10299 return -TARGET_EFAULT; 10300 } 10301 ret = get_errno(clock_adjtime(arg1, phtx)); 10302 if (!is_error(ret) && phtx) { 10303 if (host_to_target_timex(arg2, phtx) != 0) { 10304 return -TARGET_EFAULT; 10305 } 10306 } 10307 } 10308 return ret; 10309 #endif 10310 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 10311 case TARGET_NR_clock_adjtime64: 10312 { 10313 struct timex htx; 10314 10315 if (target_to_host_timex64(&htx, arg2) != 0) { 10316 return -TARGET_EFAULT; 10317 } 10318 ret = get_errno(clock_adjtime(arg1, &htx)); 10319 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 10320 return -TARGET_EFAULT; 10321 } 10322 } 10323 return ret; 10324 #endif 10325 case TARGET_NR_getpgid: 10326 return get_errno(getpgid(arg1)); 10327 case TARGET_NR_fchdir: 10328 return get_errno(fchdir(arg1)); 10329 case TARGET_NR_personality: 10330 return get_errno(personality(arg1)); 10331 #ifdef TARGET_NR__llseek /* Not on alpha */ 10332 case TARGET_NR__llseek: 10333 { 10334 int64_t res; 10335 #if !defined(__NR_llseek) 10336 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 10337 if (res == -1) { 10338 ret = get_errno(res); 10339 } else { 10340 ret = 0; 10341 } 10342 #else 10343 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 10344 #endif 10345 if ((ret == 0) && put_user_s64(res, arg4)) { 10346 return -TARGET_EFAULT; 10347 } 10348 } 10349 return ret; 10350 #endif 10351 #ifdef TARGET_NR_getdents 10352 case TARGET_NR_getdents: 10353 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 10354 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 10355 { 10356 struct target_dirent *target_dirp; 10357 struct linux_dirent *dirp; 10358 abi_long count = arg3; 10359 10360 dirp = g_try_malloc(count); 10361 if (!dirp) { 10362 return -TARGET_ENOMEM; 10363 } 10364 10365 ret = get_errno(sys_getdents(arg1, dirp, count)); 10366 if (!is_error(ret)) { 10367 struct linux_dirent *de; 10368 struct target_dirent *tde; 10369 int len = ret; 10370 int reclen, treclen; 10371 int count1, tnamelen; 10372 10373 count1 = 0; 10374 de = dirp; 10375 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10376 return -TARGET_EFAULT; 10377 tde = target_dirp; 10378 while (len > 0) { 10379 reclen = de->d_reclen; 10380 tnamelen = reclen - offsetof(struct linux_dirent, d_name); 10381 assert(tnamelen >= 0); 10382 treclen = tnamelen + offsetof(struct target_dirent, d_name); 10383 assert(count1 + treclen <= count); 10384 tde->d_reclen = tswap16(treclen); 10385 tde->d_ino = tswapal(de->d_ino); 10386 tde->d_off = tswapal(de->d_off); 10387 memcpy(tde->d_name, de->d_name, tnamelen); 10388 de = (struct linux_dirent *)((char *)de + reclen); 10389 len -= reclen; 10390 tde = (struct target_dirent *)((char *)tde + treclen); 10391 count1 += treclen; 10392 } 10393 ret = count1; 10394 unlock_user(target_dirp, arg2, ret); 10395 } 10396 g_free(dirp); 10397 } 10398 #else 10399 { 10400 struct linux_dirent *dirp; 10401 abi_long count = arg3; 10402 10403 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10404 return -TARGET_EFAULT; 10405 ret = get_errno(sys_getdents(arg1, dirp, count)); 10406 if (!is_error(ret)) { 10407 struct linux_dirent *de; 10408 int len = ret; 10409 int reclen; 10410 de = dirp; 10411 while (len > 0) { 10412 reclen = de->d_reclen; 10413 if (reclen > len) 10414 break; 10415 de->d_reclen = tswap16(reclen); 10416 tswapls(&de->d_ino); 10417 tswapls(&de->d_off); 10418 de = (struct linux_dirent *)((char *)de + reclen); 10419 len -= reclen; 10420 } 10421 } 10422 unlock_user(dirp, arg2, ret); 10423 } 10424 #endif 10425 #else 10426 /* Implement getdents in terms of getdents64 */ 10427 { 10428 struct linux_dirent64 *dirp; 10429 abi_long count = arg3; 10430 10431 dirp = lock_user(VERIFY_WRITE, arg2, count, 0); 10432 if (!dirp) { 10433 return -TARGET_EFAULT; 10434 } 10435 ret = get_errno(sys_getdents64(arg1, dirp, count)); 10436 if (!is_error(ret)) { 10437 /* Convert the dirent64 structs to target dirent. We do this 10438 * in-place, since we can guarantee that a target_dirent is no 10439 * larger than a dirent64; however this means we have to be 10440 * careful to read everything before writing in the new format. 10441 */ 10442 struct linux_dirent64 *de; 10443 struct target_dirent *tde; 10444 int len = ret; 10445 int tlen = 0; 10446 10447 de = dirp; 10448 tde = (struct target_dirent *)dirp; 10449 while (len > 0) { 10450 int namelen, treclen; 10451 int reclen = de->d_reclen; 10452 uint64_t ino = de->d_ino; 10453 int64_t off = de->d_off; 10454 uint8_t type = de->d_type; 10455 10456 namelen = strlen(de->d_name); 10457 treclen = offsetof(struct target_dirent, d_name) 10458 + namelen + 2; 10459 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long)); 10460 10461 memmove(tde->d_name, de->d_name, namelen + 1); 10462 tde->d_ino = tswapal(ino); 10463 tde->d_off = tswapal(off); 10464 tde->d_reclen = tswap16(treclen); 10465 /* The target_dirent type is in what was formerly a padding 10466 * byte at the end of the structure: 10467 */ 10468 *(((char *)tde) + treclen - 1) = type; 10469 10470 de = (struct linux_dirent64 *)((char *)de + reclen); 10471 tde = (struct target_dirent *)((char *)tde + treclen); 10472 len -= reclen; 10473 tlen += treclen; 10474 } 10475 ret = tlen; 10476 } 10477 unlock_user(dirp, arg2, ret); 10478 } 10479 #endif 10480 return ret; 10481 #endif /* TARGET_NR_getdents */ 10482 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10483 case TARGET_NR_getdents64: 10484 { 10485 struct linux_dirent64 *dirp; 10486 abi_long count = arg3; 10487 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10488 return -TARGET_EFAULT; 10489 ret = get_errno(sys_getdents64(arg1, dirp, count)); 10490 if (!is_error(ret)) { 10491 struct linux_dirent64 *de; 10492 int len = ret; 10493 int reclen; 10494 de = dirp; 10495 while (len > 0) { 10496 reclen = de->d_reclen; 10497 if (reclen > len) 10498 break; 10499 de->d_reclen = tswap16(reclen); 10500 tswap64s((uint64_t *)&de->d_ino); 10501 tswap64s((uint64_t *)&de->d_off); 10502 de = (struct linux_dirent64 *)((char *)de + reclen); 10503 len -= reclen; 10504 } 10505 } 10506 unlock_user(dirp, arg2, ret); 10507 } 10508 return ret; 10509 #endif /* TARGET_NR_getdents64 */ 10510 #if defined(TARGET_NR__newselect) 10511 case TARGET_NR__newselect: 10512 return do_select(arg1, arg2, arg3, arg4, arg5); 10513 #endif 10514 #ifdef TARGET_NR_poll 10515 case TARGET_NR_poll: 10516 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 10517 #endif 10518 #ifdef TARGET_NR_ppoll 10519 case TARGET_NR_ppoll: 10520 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 10521 #endif 10522 #ifdef TARGET_NR_ppoll_time64 10523 case TARGET_NR_ppoll_time64: 10524 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 10525 #endif 10526 case TARGET_NR_flock: 10527 /* NOTE: the flock constant seems to be the same for every 10528 Linux platform */ 10529 return get_errno(safe_flock(arg1, arg2)); 10530 case TARGET_NR_readv: 10531 { 10532 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10533 if (vec != NULL) { 10534 ret = get_errno(safe_readv(arg1, vec, arg3)); 10535 unlock_iovec(vec, arg2, arg3, 1); 10536 } else { 10537 ret = -host_to_target_errno(errno); 10538 } 10539 } 10540 return ret; 10541 case TARGET_NR_writev: 10542 { 10543 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10544 if (vec != NULL) { 10545 ret = get_errno(safe_writev(arg1, vec, arg3)); 10546 unlock_iovec(vec, arg2, arg3, 0); 10547 } else { 10548 ret = -host_to_target_errno(errno); 10549 } 10550 } 10551 return ret; 10552 #if defined(TARGET_NR_preadv) 10553 case TARGET_NR_preadv: 10554 { 10555 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10556 if (vec != NULL) { 10557 unsigned long low, high; 10558 10559 target_to_host_low_high(arg4, arg5, &low, &high); 10560 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10561 unlock_iovec(vec, arg2, arg3, 1); 10562 } else { 10563 ret = -host_to_target_errno(errno); 10564 } 10565 } 10566 return ret; 10567 #endif 10568 #if defined(TARGET_NR_pwritev) 10569 case TARGET_NR_pwritev: 10570 { 10571 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10572 if (vec != NULL) { 10573 unsigned long low, high; 10574 10575 target_to_host_low_high(arg4, arg5, &low, &high); 10576 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10577 unlock_iovec(vec, arg2, arg3, 0); 10578 } else { 10579 ret = -host_to_target_errno(errno); 10580 } 10581 } 10582 return ret; 10583 #endif 10584 case TARGET_NR_getsid: 10585 return get_errno(getsid(arg1)); 10586 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10587 case TARGET_NR_fdatasync: 10588 return get_errno(fdatasync(arg1)); 10589 #endif 10590 case TARGET_NR_sched_getaffinity: 10591 { 10592 unsigned int mask_size; 10593 unsigned long *mask; 10594 10595 /* 10596 * sched_getaffinity needs multiples of ulong, so need to take 10597 * care of mismatches between target ulong and host ulong sizes. 10598 */ 10599 if (arg2 & (sizeof(abi_ulong) - 1)) { 10600 return -TARGET_EINVAL; 10601 } 10602 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10603 10604 mask = alloca(mask_size); 10605 memset(mask, 0, mask_size); 10606 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10607 10608 if (!is_error(ret)) { 10609 if (ret > arg2) { 10610 /* More data returned than the caller's buffer will fit. 10611 * This only happens if sizeof(abi_long) < sizeof(long) 10612 * and the caller passed us a buffer holding an odd number 10613 * of abi_longs. If the host kernel is actually using the 10614 * extra 4 bytes then fail EINVAL; otherwise we can just 10615 * ignore them and only copy the interesting part. 10616 */ 10617 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10618 if (numcpus > arg2 * 8) { 10619 return -TARGET_EINVAL; 10620 } 10621 ret = arg2; 10622 } 10623 10624 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10625 return -TARGET_EFAULT; 10626 } 10627 } 10628 } 10629 return ret; 10630 case TARGET_NR_sched_setaffinity: 10631 { 10632 unsigned int mask_size; 10633 unsigned long *mask; 10634 10635 /* 10636 * sched_setaffinity needs multiples of ulong, so need to take 10637 * care of mismatches between target ulong and host ulong sizes. 10638 */ 10639 if (arg2 & (sizeof(abi_ulong) - 1)) { 10640 return -TARGET_EINVAL; 10641 } 10642 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10643 mask = alloca(mask_size); 10644 10645 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10646 if (ret) { 10647 return ret; 10648 } 10649 10650 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10651 } 10652 case TARGET_NR_getcpu: 10653 { 10654 unsigned cpu, node; 10655 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10656 arg2 ? &node : NULL, 10657 NULL)); 10658 if (is_error(ret)) { 10659 return ret; 10660 } 10661 if (arg1 && put_user_u32(cpu, arg1)) { 10662 return -TARGET_EFAULT; 10663 } 10664 if (arg2 && put_user_u32(node, arg2)) { 10665 return -TARGET_EFAULT; 10666 } 10667 } 10668 return ret; 10669 case TARGET_NR_sched_setparam: 10670 { 10671 struct sched_param *target_schp; 10672 struct sched_param schp; 10673 10674 if (arg2 == 0) { 10675 return -TARGET_EINVAL; 10676 } 10677 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) 10678 return -TARGET_EFAULT; 10679 schp.sched_priority = tswap32(target_schp->sched_priority); 10680 unlock_user_struct(target_schp, arg2, 0); 10681 return get_errno(sched_setparam(arg1, &schp)); 10682 } 10683 case TARGET_NR_sched_getparam: 10684 { 10685 struct sched_param *target_schp; 10686 struct sched_param schp; 10687 10688 if (arg2 == 0) { 10689 return -TARGET_EINVAL; 10690 } 10691 ret = get_errno(sched_getparam(arg1, &schp)); 10692 if (!is_error(ret)) { 10693 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) 10694 return -TARGET_EFAULT; 10695 target_schp->sched_priority = tswap32(schp.sched_priority); 10696 unlock_user_struct(target_schp, arg2, 1); 10697 } 10698 } 10699 return ret; 10700 case TARGET_NR_sched_setscheduler: 10701 { 10702 struct sched_param *target_schp; 10703 struct sched_param schp; 10704 if (arg3 == 0) { 10705 return -TARGET_EINVAL; 10706 } 10707 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) 10708 return -TARGET_EFAULT; 10709 schp.sched_priority = tswap32(target_schp->sched_priority); 10710 unlock_user_struct(target_schp, arg3, 0); 10711 return get_errno(sched_setscheduler(arg1, arg2, &schp)); 10712 } 10713 case TARGET_NR_sched_getscheduler: 10714 return get_errno(sched_getscheduler(arg1)); 10715 case TARGET_NR_sched_yield: 10716 return get_errno(sched_yield()); 10717 case TARGET_NR_sched_get_priority_max: 10718 return get_errno(sched_get_priority_max(arg1)); 10719 case TARGET_NR_sched_get_priority_min: 10720 return get_errno(sched_get_priority_min(arg1)); 10721 #ifdef TARGET_NR_sched_rr_get_interval 10722 case TARGET_NR_sched_rr_get_interval: 10723 { 10724 struct timespec ts; 10725 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10726 if (!is_error(ret)) { 10727 ret = host_to_target_timespec(arg2, &ts); 10728 } 10729 } 10730 return ret; 10731 #endif 10732 #ifdef TARGET_NR_sched_rr_get_interval_time64 10733 case TARGET_NR_sched_rr_get_interval_time64: 10734 { 10735 struct timespec ts; 10736 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10737 if (!is_error(ret)) { 10738 ret = host_to_target_timespec64(arg2, &ts); 10739 } 10740 } 10741 return ret; 10742 #endif 10743 #if defined(TARGET_NR_nanosleep) 10744 case TARGET_NR_nanosleep: 10745 { 10746 struct timespec req, rem; 10747 target_to_host_timespec(&req, arg1); 10748 ret = get_errno(safe_nanosleep(&req, &rem)); 10749 if (is_error(ret) && arg2) { 10750 host_to_target_timespec(arg2, &rem); 10751 } 10752 } 10753 return ret; 10754 #endif 10755 case TARGET_NR_prctl: 10756 switch (arg1) { 10757 case PR_GET_PDEATHSIG: 10758 { 10759 int deathsig; 10760 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5)); 10761 if (!is_error(ret) && arg2 10762 && put_user_s32(deathsig, arg2)) { 10763 return -TARGET_EFAULT; 10764 } 10765 return ret; 10766 } 10767 #ifdef PR_GET_NAME 10768 case PR_GET_NAME: 10769 { 10770 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 10771 if (!name) { 10772 return -TARGET_EFAULT; 10773 } 10774 ret = get_errno(prctl(arg1, (unsigned long)name, 10775 arg3, arg4, arg5)); 10776 unlock_user(name, arg2, 16); 10777 return ret; 10778 } 10779 case PR_SET_NAME: 10780 { 10781 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 10782 if (!name) { 10783 return -TARGET_EFAULT; 10784 } 10785 ret = get_errno(prctl(arg1, (unsigned long)name, 10786 arg3, arg4, arg5)); 10787 unlock_user(name, arg2, 0); 10788 return ret; 10789 } 10790 #endif 10791 #ifdef TARGET_MIPS 10792 case TARGET_PR_GET_FP_MODE: 10793 { 10794 CPUMIPSState *env = ((CPUMIPSState *)cpu_env); 10795 ret = 0; 10796 if (env->CP0_Status & (1 << CP0St_FR)) { 10797 ret |= TARGET_PR_FP_MODE_FR; 10798 } 10799 if (env->CP0_Config5 & (1 << CP0C5_FRE)) { 10800 ret |= TARGET_PR_FP_MODE_FRE; 10801 } 10802 return ret; 10803 } 10804 case TARGET_PR_SET_FP_MODE: 10805 { 10806 CPUMIPSState *env = ((CPUMIPSState *)cpu_env); 10807 bool old_fr = env->CP0_Status & (1 << CP0St_FR); 10808 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE); 10809 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR; 10810 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE; 10811 10812 const unsigned int known_bits = TARGET_PR_FP_MODE_FR | 10813 TARGET_PR_FP_MODE_FRE; 10814 10815 /* If nothing to change, return right away, successfully. */ 10816 if (old_fr == new_fr && old_fre == new_fre) { 10817 return 0; 10818 } 10819 /* Check the value is valid */ 10820 if (arg2 & ~known_bits) { 10821 return -TARGET_EOPNOTSUPP; 10822 } 10823 /* Setting FRE without FR is not supported. */ 10824 if (new_fre && !new_fr) { 10825 return -TARGET_EOPNOTSUPP; 10826 } 10827 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) { 10828 /* FR1 is not supported */ 10829 return -TARGET_EOPNOTSUPP; 10830 } 10831 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64)) 10832 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) { 10833 /* cannot set FR=0 */ 10834 return -TARGET_EOPNOTSUPP; 10835 } 10836 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) { 10837 /* Cannot set FRE=1 */ 10838 return -TARGET_EOPNOTSUPP; 10839 } 10840 10841 int i; 10842 fpr_t *fpr = env->active_fpu.fpr; 10843 for (i = 0; i < 32 ; i += 2) { 10844 if (!old_fr && new_fr) { 10845 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX]; 10846 } else if (old_fr && !new_fr) { 10847 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX]; 10848 } 10849 } 10850 10851 if (new_fr) { 10852 env->CP0_Status |= (1 << CP0St_FR); 10853 env->hflags |= MIPS_HFLAG_F64; 10854 } else { 10855 env->CP0_Status &= ~(1 << CP0St_FR); 10856 env->hflags &= ~MIPS_HFLAG_F64; 10857 } 10858 if (new_fre) { 10859 env->CP0_Config5 |= (1 << CP0C5_FRE); 10860 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) { 10861 env->hflags |= MIPS_HFLAG_FRE; 10862 } 10863 } else { 10864 env->CP0_Config5 &= ~(1 << CP0C5_FRE); 10865 env->hflags &= ~MIPS_HFLAG_FRE; 10866 } 10867 10868 return 0; 10869 } 10870 #endif /* MIPS */ 10871 #ifdef TARGET_AARCH64 10872 case TARGET_PR_SVE_SET_VL: 10873 /* 10874 * We cannot support either PR_SVE_SET_VL_ONEXEC or 10875 * PR_SVE_VL_INHERIT. Note the kernel definition 10876 * of sve_vl_valid allows for VQ=512, i.e. VL=8192, 10877 * even though the current architectural maximum is VQ=16. 10878 */ 10879 ret = -TARGET_EINVAL; 10880 if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env)) 10881 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) { 10882 CPUARMState *env = cpu_env; 10883 ARMCPU *cpu = env_archcpu(env); 10884 uint32_t vq, old_vq; 10885 10886 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1; 10887 vq = MAX(arg2 / 16, 1); 10888 vq = MIN(vq, cpu->sve_max_vq); 10889 10890 if (vq < old_vq) { 10891 aarch64_sve_narrow_vq(env, vq); 10892 } 10893 env->vfp.zcr_el[1] = vq - 1; 10894 arm_rebuild_hflags(env); 10895 ret = vq * 16; 10896 } 10897 return ret; 10898 case TARGET_PR_SVE_GET_VL: 10899 ret = -TARGET_EINVAL; 10900 { 10901 ARMCPU *cpu = env_archcpu(cpu_env); 10902 if (cpu_isar_feature(aa64_sve, cpu)) { 10903 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16; 10904 } 10905 } 10906 return ret; 10907 case TARGET_PR_PAC_RESET_KEYS: 10908 { 10909 CPUARMState *env = cpu_env; 10910 ARMCPU *cpu = env_archcpu(env); 10911 10912 if (arg3 || arg4 || arg5) { 10913 return -TARGET_EINVAL; 10914 } 10915 if (cpu_isar_feature(aa64_pauth, cpu)) { 10916 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY | 10917 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY | 10918 TARGET_PR_PAC_APGAKEY); 10919 int ret = 0; 10920 Error *err = NULL; 10921 10922 if (arg2 == 0) { 10923 arg2 = all; 10924 } else if (arg2 & ~all) { 10925 return -TARGET_EINVAL; 10926 } 10927 if (arg2 & TARGET_PR_PAC_APIAKEY) { 10928 ret |= qemu_guest_getrandom(&env->keys.apia, 10929 sizeof(ARMPACKey), &err); 10930 } 10931 if (arg2 & TARGET_PR_PAC_APIBKEY) { 10932 ret |= qemu_guest_getrandom(&env->keys.apib, 10933 sizeof(ARMPACKey), &err); 10934 } 10935 if (arg2 & TARGET_PR_PAC_APDAKEY) { 10936 ret |= qemu_guest_getrandom(&env->keys.apda, 10937 sizeof(ARMPACKey), &err); 10938 } 10939 if (arg2 & TARGET_PR_PAC_APDBKEY) { 10940 ret |= qemu_guest_getrandom(&env->keys.apdb, 10941 sizeof(ARMPACKey), &err); 10942 } 10943 if (arg2 & TARGET_PR_PAC_APGAKEY) { 10944 ret |= qemu_guest_getrandom(&env->keys.apga, 10945 sizeof(ARMPACKey), &err); 10946 } 10947 if (ret != 0) { 10948 /* 10949 * Some unknown failure in the crypto. The best 10950 * we can do is log it and fail the syscall. 10951 * The real syscall cannot fail this way. 10952 */ 10953 qemu_log_mask(LOG_UNIMP, 10954 "PR_PAC_RESET_KEYS: Crypto failure: %s", 10955 error_get_pretty(err)); 10956 error_free(err); 10957 return -TARGET_EIO; 10958 } 10959 return 0; 10960 } 10961 } 10962 return -TARGET_EINVAL; 10963 case TARGET_PR_SET_TAGGED_ADDR_CTRL: 10964 { 10965 abi_ulong valid_mask = TARGET_PR_TAGGED_ADDR_ENABLE; 10966 CPUARMState *env = cpu_env; 10967 ARMCPU *cpu = env_archcpu(env); 10968 10969 if (cpu_isar_feature(aa64_mte, cpu)) { 10970 valid_mask |= TARGET_PR_MTE_TCF_MASK; 10971 valid_mask |= TARGET_PR_MTE_TAG_MASK; 10972 } 10973 10974 if ((arg2 & ~valid_mask) || arg3 || arg4 || arg5) { 10975 return -TARGET_EINVAL; 10976 } 10977 env->tagged_addr_enable = arg2 & TARGET_PR_TAGGED_ADDR_ENABLE; 10978 10979 if (cpu_isar_feature(aa64_mte, cpu)) { 10980 switch (arg2 & TARGET_PR_MTE_TCF_MASK) { 10981 case TARGET_PR_MTE_TCF_NONE: 10982 case TARGET_PR_MTE_TCF_SYNC: 10983 case TARGET_PR_MTE_TCF_ASYNC: 10984 break; 10985 default: 10986 return -EINVAL; 10987 } 10988 10989 /* 10990 * Write PR_MTE_TCF to SCTLR_EL1[TCF0]. 10991 * Note that the syscall values are consistent with hw. 10992 */ 10993 env->cp15.sctlr_el[1] = 10994 deposit64(env->cp15.sctlr_el[1], 38, 2, 10995 arg2 >> TARGET_PR_MTE_TCF_SHIFT); 10996 10997 /* 10998 * Write PR_MTE_TAG to GCR_EL1[Exclude]. 10999 * Note that the syscall uses an include mask, 11000 * and hardware uses an exclude mask -- invert. 11001 */ 11002 env->cp15.gcr_el1 = 11003 deposit64(env->cp15.gcr_el1, 0, 16, 11004 ~arg2 >> TARGET_PR_MTE_TAG_SHIFT); 11005 arm_rebuild_hflags(env); 11006 } 11007 return 0; 11008 } 11009 case TARGET_PR_GET_TAGGED_ADDR_CTRL: 11010 { 11011 abi_long ret = 0; 11012 CPUARMState *env = cpu_env; 11013 ARMCPU *cpu = env_archcpu(env); 11014 11015 if (arg2 || arg3 || arg4 || arg5) { 11016 return -TARGET_EINVAL; 11017 } 11018 if (env->tagged_addr_enable) { 11019 ret |= TARGET_PR_TAGGED_ADDR_ENABLE; 11020 } 11021 if (cpu_isar_feature(aa64_mte, cpu)) { 11022 /* See above. */ 11023 ret |= (extract64(env->cp15.sctlr_el[1], 38, 2) 11024 << TARGET_PR_MTE_TCF_SHIFT); 11025 ret = deposit64(ret, TARGET_PR_MTE_TAG_SHIFT, 16, 11026 ~env->cp15.gcr_el1); 11027 } 11028 return ret; 11029 } 11030 #endif /* AARCH64 */ 11031 case PR_GET_SECCOMP: 11032 case PR_SET_SECCOMP: 11033 /* Disable seccomp to prevent the target disabling syscalls we 11034 * need. */ 11035 return -TARGET_EINVAL; 11036 default: 11037 /* Most prctl options have no pointer arguments */ 11038 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5)); 11039 } 11040 break; 11041 #ifdef TARGET_NR_arch_prctl 11042 case TARGET_NR_arch_prctl: 11043 return do_arch_prctl(cpu_env, arg1, arg2); 11044 #endif 11045 #ifdef TARGET_NR_pread64 11046 case TARGET_NR_pread64: 11047 if (regpairs_aligned(cpu_env, num)) { 11048 arg4 = arg5; 11049 arg5 = arg6; 11050 } 11051 if (arg2 == 0 && arg3 == 0) { 11052 /* Special-case NULL buffer and zero length, which should succeed */ 11053 p = 0; 11054 } else { 11055 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11056 if (!p) { 11057 return -TARGET_EFAULT; 11058 } 11059 } 11060 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 11061 unlock_user(p, arg2, ret); 11062 return ret; 11063 case TARGET_NR_pwrite64: 11064 if (regpairs_aligned(cpu_env, num)) { 11065 arg4 = arg5; 11066 arg5 = arg6; 11067 } 11068 if (arg2 == 0 && arg3 == 0) { 11069 /* Special-case NULL buffer and zero length, which should succeed */ 11070 p = 0; 11071 } else { 11072 p = lock_user(VERIFY_READ, arg2, arg3, 1); 11073 if (!p) { 11074 return -TARGET_EFAULT; 11075 } 11076 } 11077 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 11078 unlock_user(p, arg2, 0); 11079 return ret; 11080 #endif 11081 case TARGET_NR_getcwd: 11082 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 11083 return -TARGET_EFAULT; 11084 ret = get_errno(sys_getcwd1(p, arg2)); 11085 unlock_user(p, arg1, ret); 11086 return ret; 11087 case TARGET_NR_capget: 11088 case TARGET_NR_capset: 11089 { 11090 struct target_user_cap_header *target_header; 11091 struct target_user_cap_data *target_data = NULL; 11092 struct __user_cap_header_struct header; 11093 struct __user_cap_data_struct data[2]; 11094 struct __user_cap_data_struct *dataptr = NULL; 11095 int i, target_datalen; 11096 int data_items = 1; 11097 11098 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 11099 return -TARGET_EFAULT; 11100 } 11101 header.version = tswap32(target_header->version); 11102 header.pid = tswap32(target_header->pid); 11103 11104 if (header.version != _LINUX_CAPABILITY_VERSION) { 11105 /* Version 2 and up takes pointer to two user_data structs */ 11106 data_items = 2; 11107 } 11108 11109 target_datalen = sizeof(*target_data) * data_items; 11110 11111 if (arg2) { 11112 if (num == TARGET_NR_capget) { 11113 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 11114 } else { 11115 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 11116 } 11117 if (!target_data) { 11118 unlock_user_struct(target_header, arg1, 0); 11119 return -TARGET_EFAULT; 11120 } 11121 11122 if (num == TARGET_NR_capset) { 11123 for (i = 0; i < data_items; i++) { 11124 data[i].effective = tswap32(target_data[i].effective); 11125 data[i].permitted = tswap32(target_data[i].permitted); 11126 data[i].inheritable = tswap32(target_data[i].inheritable); 11127 } 11128 } 11129 11130 dataptr = data; 11131 } 11132 11133 if (num == TARGET_NR_capget) { 11134 ret = get_errno(capget(&header, dataptr)); 11135 } else { 11136 ret = get_errno(capset(&header, dataptr)); 11137 } 11138 11139 /* The kernel always updates version for both capget and capset */ 11140 target_header->version = tswap32(header.version); 11141 unlock_user_struct(target_header, arg1, 1); 11142 11143 if (arg2) { 11144 if (num == TARGET_NR_capget) { 11145 for (i = 0; i < data_items; i++) { 11146 target_data[i].effective = tswap32(data[i].effective); 11147 target_data[i].permitted = tswap32(data[i].permitted); 11148 target_data[i].inheritable = tswap32(data[i].inheritable); 11149 } 11150 unlock_user(target_data, arg2, target_datalen); 11151 } else { 11152 unlock_user(target_data, arg2, 0); 11153 } 11154 } 11155 return ret; 11156 } 11157 case TARGET_NR_sigaltstack: 11158 return do_sigaltstack(arg1, arg2, cpu_env); 11159 11160 #ifdef CONFIG_SENDFILE 11161 #ifdef TARGET_NR_sendfile 11162 case TARGET_NR_sendfile: 11163 { 11164 off_t *offp = NULL; 11165 off_t off; 11166 if (arg3) { 11167 ret = get_user_sal(off, arg3); 11168 if (is_error(ret)) { 11169 return ret; 11170 } 11171 offp = &off; 11172 } 11173 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11174 if (!is_error(ret) && arg3) { 11175 abi_long ret2 = put_user_sal(off, arg3); 11176 if (is_error(ret2)) { 11177 ret = ret2; 11178 } 11179 } 11180 return ret; 11181 } 11182 #endif 11183 #ifdef TARGET_NR_sendfile64 11184 case TARGET_NR_sendfile64: 11185 { 11186 off_t *offp = NULL; 11187 off_t off; 11188 if (arg3) { 11189 ret = get_user_s64(off, arg3); 11190 if (is_error(ret)) { 11191 return ret; 11192 } 11193 offp = &off; 11194 } 11195 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11196 if (!is_error(ret) && arg3) { 11197 abi_long ret2 = put_user_s64(off, arg3); 11198 if (is_error(ret2)) { 11199 ret = ret2; 11200 } 11201 } 11202 return ret; 11203 } 11204 #endif 11205 #endif 11206 #ifdef TARGET_NR_vfork 11207 case TARGET_NR_vfork: 11208 return get_errno(do_fork(cpu_env, 11209 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 11210 0, 0, 0, 0)); 11211 #endif 11212 #ifdef TARGET_NR_ugetrlimit 11213 case TARGET_NR_ugetrlimit: 11214 { 11215 struct rlimit rlim; 11216 int resource = target_to_host_resource(arg1); 11217 ret = get_errno(getrlimit(resource, &rlim)); 11218 if (!is_error(ret)) { 11219 struct target_rlimit *target_rlim; 11220 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 11221 return -TARGET_EFAULT; 11222 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 11223 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 11224 unlock_user_struct(target_rlim, arg2, 1); 11225 } 11226 return ret; 11227 } 11228 #endif 11229 #ifdef TARGET_NR_truncate64 11230 case TARGET_NR_truncate64: 11231 if (!(p = lock_user_string(arg1))) 11232 return -TARGET_EFAULT; 11233 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 11234 unlock_user(p, arg1, 0); 11235 return ret; 11236 #endif 11237 #ifdef TARGET_NR_ftruncate64 11238 case TARGET_NR_ftruncate64: 11239 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 11240 #endif 11241 #ifdef TARGET_NR_stat64 11242 case TARGET_NR_stat64: 11243 if (!(p = lock_user_string(arg1))) { 11244 return -TARGET_EFAULT; 11245 } 11246 ret = get_errno(stat(path(p), &st)); 11247 unlock_user(p, arg1, 0); 11248 if (!is_error(ret)) 11249 ret = host_to_target_stat64(cpu_env, arg2, &st); 11250 return ret; 11251 #endif 11252 #ifdef TARGET_NR_lstat64 11253 case TARGET_NR_lstat64: 11254 if (!(p = lock_user_string(arg1))) { 11255 return -TARGET_EFAULT; 11256 } 11257 ret = get_errno(lstat(path(p), &st)); 11258 unlock_user(p, arg1, 0); 11259 if (!is_error(ret)) 11260 ret = host_to_target_stat64(cpu_env, arg2, &st); 11261 return ret; 11262 #endif 11263 #ifdef TARGET_NR_fstat64 11264 case TARGET_NR_fstat64: 11265 ret = get_errno(fstat(arg1, &st)); 11266 if (!is_error(ret)) 11267 ret = host_to_target_stat64(cpu_env, arg2, &st); 11268 return ret; 11269 #endif 11270 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11271 #ifdef TARGET_NR_fstatat64 11272 case TARGET_NR_fstatat64: 11273 #endif 11274 #ifdef TARGET_NR_newfstatat 11275 case TARGET_NR_newfstatat: 11276 #endif 11277 if (!(p = lock_user_string(arg2))) { 11278 return -TARGET_EFAULT; 11279 } 11280 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11281 unlock_user(p, arg2, 0); 11282 if (!is_error(ret)) 11283 ret = host_to_target_stat64(cpu_env, arg3, &st); 11284 return ret; 11285 #endif 11286 #if defined(TARGET_NR_statx) 11287 case TARGET_NR_statx: 11288 { 11289 struct target_statx *target_stx; 11290 int dirfd = arg1; 11291 int flags = arg3; 11292 11293 p = lock_user_string(arg2); 11294 if (p == NULL) { 11295 return -TARGET_EFAULT; 11296 } 11297 #if defined(__NR_statx) 11298 { 11299 /* 11300 * It is assumed that struct statx is architecture independent. 11301 */ 11302 struct target_statx host_stx; 11303 int mask = arg4; 11304 11305 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11306 if (!is_error(ret)) { 11307 if (host_to_target_statx(&host_stx, arg5) != 0) { 11308 unlock_user(p, arg2, 0); 11309 return -TARGET_EFAULT; 11310 } 11311 } 11312 11313 if (ret != -TARGET_ENOSYS) { 11314 unlock_user(p, arg2, 0); 11315 return ret; 11316 } 11317 } 11318 #endif 11319 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11320 unlock_user(p, arg2, 0); 11321 11322 if (!is_error(ret)) { 11323 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11324 return -TARGET_EFAULT; 11325 } 11326 memset(target_stx, 0, sizeof(*target_stx)); 11327 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11328 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11329 __put_user(st.st_ino, &target_stx->stx_ino); 11330 __put_user(st.st_mode, &target_stx->stx_mode); 11331 __put_user(st.st_uid, &target_stx->stx_uid); 11332 __put_user(st.st_gid, &target_stx->stx_gid); 11333 __put_user(st.st_nlink, &target_stx->stx_nlink); 11334 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11335 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11336 __put_user(st.st_size, &target_stx->stx_size); 11337 __put_user(st.st_blksize, &target_stx->stx_blksize); 11338 __put_user(st.st_blocks, &target_stx->stx_blocks); 11339 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11340 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11341 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11342 unlock_user_struct(target_stx, arg5, 1); 11343 } 11344 } 11345 return ret; 11346 #endif 11347 #ifdef TARGET_NR_lchown 11348 case TARGET_NR_lchown: 11349 if (!(p = lock_user_string(arg1))) 11350 return -TARGET_EFAULT; 11351 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11352 unlock_user(p, arg1, 0); 11353 return ret; 11354 #endif 11355 #ifdef TARGET_NR_getuid 11356 case TARGET_NR_getuid: 11357 return get_errno(high2lowuid(getuid())); 11358 #endif 11359 #ifdef TARGET_NR_getgid 11360 case TARGET_NR_getgid: 11361 return get_errno(high2lowgid(getgid())); 11362 #endif 11363 #ifdef TARGET_NR_geteuid 11364 case TARGET_NR_geteuid: 11365 return get_errno(high2lowuid(geteuid())); 11366 #endif 11367 #ifdef TARGET_NR_getegid 11368 case TARGET_NR_getegid: 11369 return get_errno(high2lowgid(getegid())); 11370 #endif 11371 case TARGET_NR_setreuid: 11372 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11373 case TARGET_NR_setregid: 11374 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11375 case TARGET_NR_getgroups: 11376 { 11377 int gidsetsize = arg1; 11378 target_id *target_grouplist; 11379 gid_t *grouplist; 11380 int i; 11381 11382 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11383 ret = get_errno(getgroups(gidsetsize, grouplist)); 11384 if (gidsetsize == 0) 11385 return ret; 11386 if (!is_error(ret)) { 11387 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 11388 if (!target_grouplist) 11389 return -TARGET_EFAULT; 11390 for(i = 0;i < ret; i++) 11391 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11392 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 11393 } 11394 } 11395 return ret; 11396 case TARGET_NR_setgroups: 11397 { 11398 int gidsetsize = arg1; 11399 target_id *target_grouplist; 11400 gid_t *grouplist = NULL; 11401 int i; 11402 if (gidsetsize) { 11403 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11404 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 11405 if (!target_grouplist) { 11406 return -TARGET_EFAULT; 11407 } 11408 for (i = 0; i < gidsetsize; i++) { 11409 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11410 } 11411 unlock_user(target_grouplist, arg2, 0); 11412 } 11413 return get_errno(setgroups(gidsetsize, grouplist)); 11414 } 11415 case TARGET_NR_fchown: 11416 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11417 #if defined(TARGET_NR_fchownat) 11418 case TARGET_NR_fchownat: 11419 if (!(p = lock_user_string(arg2))) 11420 return -TARGET_EFAULT; 11421 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11422 low2highgid(arg4), arg5)); 11423 unlock_user(p, arg2, 0); 11424 return ret; 11425 #endif 11426 #ifdef TARGET_NR_setresuid 11427 case TARGET_NR_setresuid: 11428 return get_errno(sys_setresuid(low2highuid(arg1), 11429 low2highuid(arg2), 11430 low2highuid(arg3))); 11431 #endif 11432 #ifdef TARGET_NR_getresuid 11433 case TARGET_NR_getresuid: 11434 { 11435 uid_t ruid, euid, suid; 11436 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11437 if (!is_error(ret)) { 11438 if (put_user_id(high2lowuid(ruid), arg1) 11439 || put_user_id(high2lowuid(euid), arg2) 11440 || put_user_id(high2lowuid(suid), arg3)) 11441 return -TARGET_EFAULT; 11442 } 11443 } 11444 return ret; 11445 #endif 11446 #ifdef TARGET_NR_getresgid 11447 case TARGET_NR_setresgid: 11448 return get_errno(sys_setresgid(low2highgid(arg1), 11449 low2highgid(arg2), 11450 low2highgid(arg3))); 11451 #endif 11452 #ifdef TARGET_NR_getresgid 11453 case TARGET_NR_getresgid: 11454 { 11455 gid_t rgid, egid, sgid; 11456 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11457 if (!is_error(ret)) { 11458 if (put_user_id(high2lowgid(rgid), arg1) 11459 || put_user_id(high2lowgid(egid), arg2) 11460 || put_user_id(high2lowgid(sgid), arg3)) 11461 return -TARGET_EFAULT; 11462 } 11463 } 11464 return ret; 11465 #endif 11466 #ifdef TARGET_NR_chown 11467 case TARGET_NR_chown: 11468 if (!(p = lock_user_string(arg1))) 11469 return -TARGET_EFAULT; 11470 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11471 unlock_user(p, arg1, 0); 11472 return ret; 11473 #endif 11474 case TARGET_NR_setuid: 11475 return get_errno(sys_setuid(low2highuid(arg1))); 11476 case TARGET_NR_setgid: 11477 return get_errno(sys_setgid(low2highgid(arg1))); 11478 case TARGET_NR_setfsuid: 11479 return get_errno(setfsuid(arg1)); 11480 case TARGET_NR_setfsgid: 11481 return get_errno(setfsgid(arg1)); 11482 11483 #ifdef TARGET_NR_lchown32 11484 case TARGET_NR_lchown32: 11485 if (!(p = lock_user_string(arg1))) 11486 return -TARGET_EFAULT; 11487 ret = get_errno(lchown(p, arg2, arg3)); 11488 unlock_user(p, arg1, 0); 11489 return ret; 11490 #endif 11491 #ifdef TARGET_NR_getuid32 11492 case TARGET_NR_getuid32: 11493 return get_errno(getuid()); 11494 #endif 11495 11496 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11497 /* Alpha specific */ 11498 case TARGET_NR_getxuid: 11499 { 11500 uid_t euid; 11501 euid=geteuid(); 11502 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; 11503 } 11504 return get_errno(getuid()); 11505 #endif 11506 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11507 /* Alpha specific */ 11508 case TARGET_NR_getxgid: 11509 { 11510 uid_t egid; 11511 egid=getegid(); 11512 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; 11513 } 11514 return get_errno(getgid()); 11515 #endif 11516 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11517 /* Alpha specific */ 11518 case TARGET_NR_osf_getsysinfo: 11519 ret = -TARGET_EOPNOTSUPP; 11520 switch (arg1) { 11521 case TARGET_GSI_IEEE_FP_CONTROL: 11522 { 11523 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11524 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr; 11525 11526 swcr &= ~SWCR_STATUS_MASK; 11527 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 11528 11529 if (put_user_u64 (swcr, arg2)) 11530 return -TARGET_EFAULT; 11531 ret = 0; 11532 } 11533 break; 11534 11535 /* case GSI_IEEE_STATE_AT_SIGNAL: 11536 -- Not implemented in linux kernel. 11537 case GSI_UACPROC: 11538 -- Retrieves current unaligned access state; not much used. 11539 case GSI_PROC_TYPE: 11540 -- Retrieves implver information; surely not used. 11541 case GSI_GET_HWRPB: 11542 -- Grabs a copy of the HWRPB; surely not used. 11543 */ 11544 } 11545 return ret; 11546 #endif 11547 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 11548 /* Alpha specific */ 11549 case TARGET_NR_osf_setsysinfo: 11550 ret = -TARGET_EOPNOTSUPP; 11551 switch (arg1) { 11552 case TARGET_SSI_IEEE_FP_CONTROL: 11553 { 11554 uint64_t swcr, fpcr; 11555 11556 if (get_user_u64 (swcr, arg2)) { 11557 return -TARGET_EFAULT; 11558 } 11559 11560 /* 11561 * The kernel calls swcr_update_status to update the 11562 * status bits from the fpcr at every point that it 11563 * could be queried. Therefore, we store the status 11564 * bits only in FPCR. 11565 */ 11566 ((CPUAlphaState *)cpu_env)->swcr 11567 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 11568 11569 fpcr = cpu_alpha_load_fpcr(cpu_env); 11570 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11571 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11572 cpu_alpha_store_fpcr(cpu_env, fpcr); 11573 ret = 0; 11574 } 11575 break; 11576 11577 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11578 { 11579 uint64_t exc, fpcr, fex; 11580 11581 if (get_user_u64(exc, arg2)) { 11582 return -TARGET_EFAULT; 11583 } 11584 exc &= SWCR_STATUS_MASK; 11585 fpcr = cpu_alpha_load_fpcr(cpu_env); 11586 11587 /* Old exceptions are not signaled. */ 11588 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11589 fex = exc & ~fex; 11590 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11591 fex &= ((CPUArchState *)cpu_env)->swcr; 11592 11593 /* Update the hardware fpcr. */ 11594 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11595 cpu_alpha_store_fpcr(cpu_env, fpcr); 11596 11597 if (fex) { 11598 int si_code = TARGET_FPE_FLTUNK; 11599 target_siginfo_t info; 11600 11601 if (fex & SWCR_TRAP_ENABLE_DNO) { 11602 si_code = TARGET_FPE_FLTUND; 11603 } 11604 if (fex & SWCR_TRAP_ENABLE_INE) { 11605 si_code = TARGET_FPE_FLTRES; 11606 } 11607 if (fex & SWCR_TRAP_ENABLE_UNF) { 11608 si_code = TARGET_FPE_FLTUND; 11609 } 11610 if (fex & SWCR_TRAP_ENABLE_OVF) { 11611 si_code = TARGET_FPE_FLTOVF; 11612 } 11613 if (fex & SWCR_TRAP_ENABLE_DZE) { 11614 si_code = TARGET_FPE_FLTDIV; 11615 } 11616 if (fex & SWCR_TRAP_ENABLE_INV) { 11617 si_code = TARGET_FPE_FLTINV; 11618 } 11619 11620 info.si_signo = SIGFPE; 11621 info.si_errno = 0; 11622 info.si_code = si_code; 11623 info._sifields._sigfault._addr 11624 = ((CPUArchState *)cpu_env)->pc; 11625 queue_signal((CPUArchState *)cpu_env, info.si_signo, 11626 QEMU_SI_FAULT, &info); 11627 } 11628 ret = 0; 11629 } 11630 break; 11631 11632 /* case SSI_NVPAIRS: 11633 -- Used with SSIN_UACPROC to enable unaligned accesses. 11634 case SSI_IEEE_STATE_AT_SIGNAL: 11635 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11636 -- Not implemented in linux kernel 11637 */ 11638 } 11639 return ret; 11640 #endif 11641 #ifdef TARGET_NR_osf_sigprocmask 11642 /* Alpha specific. */ 11643 case TARGET_NR_osf_sigprocmask: 11644 { 11645 abi_ulong mask; 11646 int how; 11647 sigset_t set, oldset; 11648 11649 switch(arg1) { 11650 case TARGET_SIG_BLOCK: 11651 how = SIG_BLOCK; 11652 break; 11653 case TARGET_SIG_UNBLOCK: 11654 how = SIG_UNBLOCK; 11655 break; 11656 case TARGET_SIG_SETMASK: 11657 how = SIG_SETMASK; 11658 break; 11659 default: 11660 return -TARGET_EINVAL; 11661 } 11662 mask = arg2; 11663 target_to_host_old_sigset(&set, &mask); 11664 ret = do_sigprocmask(how, &set, &oldset); 11665 if (!ret) { 11666 host_to_target_old_sigset(&mask, &oldset); 11667 ret = mask; 11668 } 11669 } 11670 return ret; 11671 #endif 11672 11673 #ifdef TARGET_NR_getgid32 11674 case TARGET_NR_getgid32: 11675 return get_errno(getgid()); 11676 #endif 11677 #ifdef TARGET_NR_geteuid32 11678 case TARGET_NR_geteuid32: 11679 return get_errno(geteuid()); 11680 #endif 11681 #ifdef TARGET_NR_getegid32 11682 case TARGET_NR_getegid32: 11683 return get_errno(getegid()); 11684 #endif 11685 #ifdef TARGET_NR_setreuid32 11686 case TARGET_NR_setreuid32: 11687 return get_errno(setreuid(arg1, arg2)); 11688 #endif 11689 #ifdef TARGET_NR_setregid32 11690 case TARGET_NR_setregid32: 11691 return get_errno(setregid(arg1, arg2)); 11692 #endif 11693 #ifdef TARGET_NR_getgroups32 11694 case TARGET_NR_getgroups32: 11695 { 11696 int gidsetsize = arg1; 11697 uint32_t *target_grouplist; 11698 gid_t *grouplist; 11699 int i; 11700 11701 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11702 ret = get_errno(getgroups(gidsetsize, grouplist)); 11703 if (gidsetsize == 0) 11704 return ret; 11705 if (!is_error(ret)) { 11706 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11707 if (!target_grouplist) { 11708 return -TARGET_EFAULT; 11709 } 11710 for(i = 0;i < ret; i++) 11711 target_grouplist[i] = tswap32(grouplist[i]); 11712 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11713 } 11714 } 11715 return ret; 11716 #endif 11717 #ifdef TARGET_NR_setgroups32 11718 case TARGET_NR_setgroups32: 11719 { 11720 int gidsetsize = arg1; 11721 uint32_t *target_grouplist; 11722 gid_t *grouplist; 11723 int i; 11724 11725 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11726 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11727 if (!target_grouplist) { 11728 return -TARGET_EFAULT; 11729 } 11730 for(i = 0;i < gidsetsize; i++) 11731 grouplist[i] = tswap32(target_grouplist[i]); 11732 unlock_user(target_grouplist, arg2, 0); 11733 return get_errno(setgroups(gidsetsize, grouplist)); 11734 } 11735 #endif 11736 #ifdef TARGET_NR_fchown32 11737 case TARGET_NR_fchown32: 11738 return get_errno(fchown(arg1, arg2, arg3)); 11739 #endif 11740 #ifdef TARGET_NR_setresuid32 11741 case TARGET_NR_setresuid32: 11742 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11743 #endif 11744 #ifdef TARGET_NR_getresuid32 11745 case TARGET_NR_getresuid32: 11746 { 11747 uid_t ruid, euid, suid; 11748 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11749 if (!is_error(ret)) { 11750 if (put_user_u32(ruid, arg1) 11751 || put_user_u32(euid, arg2) 11752 || put_user_u32(suid, arg3)) 11753 return -TARGET_EFAULT; 11754 } 11755 } 11756 return ret; 11757 #endif 11758 #ifdef TARGET_NR_setresgid32 11759 case TARGET_NR_setresgid32: 11760 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11761 #endif 11762 #ifdef TARGET_NR_getresgid32 11763 case TARGET_NR_getresgid32: 11764 { 11765 gid_t rgid, egid, sgid; 11766 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11767 if (!is_error(ret)) { 11768 if (put_user_u32(rgid, arg1) 11769 || put_user_u32(egid, arg2) 11770 || put_user_u32(sgid, arg3)) 11771 return -TARGET_EFAULT; 11772 } 11773 } 11774 return ret; 11775 #endif 11776 #ifdef TARGET_NR_chown32 11777 case TARGET_NR_chown32: 11778 if (!(p = lock_user_string(arg1))) 11779 return -TARGET_EFAULT; 11780 ret = get_errno(chown(p, arg2, arg3)); 11781 unlock_user(p, arg1, 0); 11782 return ret; 11783 #endif 11784 #ifdef TARGET_NR_setuid32 11785 case TARGET_NR_setuid32: 11786 return get_errno(sys_setuid(arg1)); 11787 #endif 11788 #ifdef TARGET_NR_setgid32 11789 case TARGET_NR_setgid32: 11790 return get_errno(sys_setgid(arg1)); 11791 #endif 11792 #ifdef TARGET_NR_setfsuid32 11793 case TARGET_NR_setfsuid32: 11794 return get_errno(setfsuid(arg1)); 11795 #endif 11796 #ifdef TARGET_NR_setfsgid32 11797 case TARGET_NR_setfsgid32: 11798 return get_errno(setfsgid(arg1)); 11799 #endif 11800 #ifdef TARGET_NR_mincore 11801 case TARGET_NR_mincore: 11802 { 11803 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11804 if (!a) { 11805 return -TARGET_ENOMEM; 11806 } 11807 p = lock_user_string(arg3); 11808 if (!p) { 11809 ret = -TARGET_EFAULT; 11810 } else { 11811 ret = get_errno(mincore(a, arg2, p)); 11812 unlock_user(p, arg3, ret); 11813 } 11814 unlock_user(a, arg1, 0); 11815 } 11816 return ret; 11817 #endif 11818 #ifdef TARGET_NR_arm_fadvise64_64 11819 case TARGET_NR_arm_fadvise64_64: 11820 /* arm_fadvise64_64 looks like fadvise64_64 but 11821 * with different argument order: fd, advice, offset, len 11822 * rather than the usual fd, offset, len, advice. 11823 * Note that offset and len are both 64-bit so appear as 11824 * pairs of 32-bit registers. 11825 */ 11826 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11827 target_offset64(arg5, arg6), arg2); 11828 return -host_to_target_errno(ret); 11829 #endif 11830 11831 #if TARGET_ABI_BITS == 32 11832 11833 #ifdef TARGET_NR_fadvise64_64 11834 case TARGET_NR_fadvise64_64: 11835 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11836 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11837 ret = arg2; 11838 arg2 = arg3; 11839 arg3 = arg4; 11840 arg4 = arg5; 11841 arg5 = arg6; 11842 arg6 = ret; 11843 #else 11844 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11845 if (regpairs_aligned(cpu_env, num)) { 11846 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11847 arg2 = arg3; 11848 arg3 = arg4; 11849 arg4 = arg5; 11850 arg5 = arg6; 11851 arg6 = arg7; 11852 } 11853 #endif 11854 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11855 target_offset64(arg4, arg5), arg6); 11856 return -host_to_target_errno(ret); 11857 #endif 11858 11859 #ifdef TARGET_NR_fadvise64 11860 case TARGET_NR_fadvise64: 11861 /* 5 args: fd, offset (high, low), len, advice */ 11862 if (regpairs_aligned(cpu_env, num)) { 11863 /* offset is in (3,4), len in 5 and advice in 6 */ 11864 arg2 = arg3; 11865 arg3 = arg4; 11866 arg4 = arg5; 11867 arg5 = arg6; 11868 } 11869 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11870 return -host_to_target_errno(ret); 11871 #endif 11872 11873 #else /* not a 32-bit ABI */ 11874 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11875 #ifdef TARGET_NR_fadvise64_64 11876 case TARGET_NR_fadvise64_64: 11877 #endif 11878 #ifdef TARGET_NR_fadvise64 11879 case TARGET_NR_fadvise64: 11880 #endif 11881 #ifdef TARGET_S390X 11882 switch (arg4) { 11883 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11884 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11885 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11886 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11887 default: break; 11888 } 11889 #endif 11890 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11891 #endif 11892 #endif /* end of 64-bit ABI fadvise handling */ 11893 11894 #ifdef TARGET_NR_madvise 11895 case TARGET_NR_madvise: 11896 /* A straight passthrough may not be safe because qemu sometimes 11897 turns private file-backed mappings into anonymous mappings. 11898 This will break MADV_DONTNEED. 11899 This is a hint, so ignoring and returning success is ok. */ 11900 return 0; 11901 #endif 11902 #ifdef TARGET_NR_fcntl64 11903 case TARGET_NR_fcntl64: 11904 { 11905 int cmd; 11906 struct flock64 fl; 11907 from_flock64_fn *copyfrom = copy_from_user_flock64; 11908 to_flock64_fn *copyto = copy_to_user_flock64; 11909 11910 #ifdef TARGET_ARM 11911 if (!((CPUARMState *)cpu_env)->eabi) { 11912 copyfrom = copy_from_user_oabi_flock64; 11913 copyto = copy_to_user_oabi_flock64; 11914 } 11915 #endif 11916 11917 cmd = target_to_host_fcntl_cmd(arg2); 11918 if (cmd == -TARGET_EINVAL) { 11919 return cmd; 11920 } 11921 11922 switch(arg2) { 11923 case TARGET_F_GETLK64: 11924 ret = copyfrom(&fl, arg3); 11925 if (ret) { 11926 break; 11927 } 11928 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11929 if (ret == 0) { 11930 ret = copyto(arg3, &fl); 11931 } 11932 break; 11933 11934 case TARGET_F_SETLK64: 11935 case TARGET_F_SETLKW64: 11936 ret = copyfrom(&fl, arg3); 11937 if (ret) { 11938 break; 11939 } 11940 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11941 break; 11942 default: 11943 ret = do_fcntl(arg1, arg2, arg3); 11944 break; 11945 } 11946 return ret; 11947 } 11948 #endif 11949 #ifdef TARGET_NR_cacheflush 11950 case TARGET_NR_cacheflush: 11951 /* self-modifying code is handled automatically, so nothing needed */ 11952 return 0; 11953 #endif 11954 #ifdef TARGET_NR_getpagesize 11955 case TARGET_NR_getpagesize: 11956 return TARGET_PAGE_SIZE; 11957 #endif 11958 case TARGET_NR_gettid: 11959 return get_errno(sys_gettid()); 11960 #ifdef TARGET_NR_readahead 11961 case TARGET_NR_readahead: 11962 #if TARGET_ABI_BITS == 32 11963 if (regpairs_aligned(cpu_env, num)) { 11964 arg2 = arg3; 11965 arg3 = arg4; 11966 arg4 = arg5; 11967 } 11968 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11969 #else 11970 ret = get_errno(readahead(arg1, arg2, arg3)); 11971 #endif 11972 return ret; 11973 #endif 11974 #ifdef CONFIG_ATTR 11975 #ifdef TARGET_NR_setxattr 11976 case TARGET_NR_listxattr: 11977 case TARGET_NR_llistxattr: 11978 { 11979 void *p, *b = 0; 11980 if (arg2) { 11981 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11982 if (!b) { 11983 return -TARGET_EFAULT; 11984 } 11985 } 11986 p = lock_user_string(arg1); 11987 if (p) { 11988 if (num == TARGET_NR_listxattr) { 11989 ret = get_errno(listxattr(p, b, arg3)); 11990 } else { 11991 ret = get_errno(llistxattr(p, b, arg3)); 11992 } 11993 } else { 11994 ret = -TARGET_EFAULT; 11995 } 11996 unlock_user(p, arg1, 0); 11997 unlock_user(b, arg2, arg3); 11998 return ret; 11999 } 12000 case TARGET_NR_flistxattr: 12001 { 12002 void *b = 0; 12003 if (arg2) { 12004 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 12005 if (!b) { 12006 return -TARGET_EFAULT; 12007 } 12008 } 12009 ret = get_errno(flistxattr(arg1, b, arg3)); 12010 unlock_user(b, arg2, arg3); 12011 return ret; 12012 } 12013 case TARGET_NR_setxattr: 12014 case TARGET_NR_lsetxattr: 12015 { 12016 void *p, *n, *v = 0; 12017 if (arg3) { 12018 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12019 if (!v) { 12020 return -TARGET_EFAULT; 12021 } 12022 } 12023 p = lock_user_string(arg1); 12024 n = lock_user_string(arg2); 12025 if (p && n) { 12026 if (num == TARGET_NR_setxattr) { 12027 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 12028 } else { 12029 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 12030 } 12031 } else { 12032 ret = -TARGET_EFAULT; 12033 } 12034 unlock_user(p, arg1, 0); 12035 unlock_user(n, arg2, 0); 12036 unlock_user(v, arg3, 0); 12037 } 12038 return ret; 12039 case TARGET_NR_fsetxattr: 12040 { 12041 void *n, *v = 0; 12042 if (arg3) { 12043 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12044 if (!v) { 12045 return -TARGET_EFAULT; 12046 } 12047 } 12048 n = lock_user_string(arg2); 12049 if (n) { 12050 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 12051 } else { 12052 ret = -TARGET_EFAULT; 12053 } 12054 unlock_user(n, arg2, 0); 12055 unlock_user(v, arg3, 0); 12056 } 12057 return ret; 12058 case TARGET_NR_getxattr: 12059 case TARGET_NR_lgetxattr: 12060 { 12061 void *p, *n, *v = 0; 12062 if (arg3) { 12063 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12064 if (!v) { 12065 return -TARGET_EFAULT; 12066 } 12067 } 12068 p = lock_user_string(arg1); 12069 n = lock_user_string(arg2); 12070 if (p && n) { 12071 if (num == TARGET_NR_getxattr) { 12072 ret = get_errno(getxattr(p, n, v, arg4)); 12073 } else { 12074 ret = get_errno(lgetxattr(p, n, v, arg4)); 12075 } 12076 } else { 12077 ret = -TARGET_EFAULT; 12078 } 12079 unlock_user(p, arg1, 0); 12080 unlock_user(n, arg2, 0); 12081 unlock_user(v, arg3, arg4); 12082 } 12083 return ret; 12084 case TARGET_NR_fgetxattr: 12085 { 12086 void *n, *v = 0; 12087 if (arg3) { 12088 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12089 if (!v) { 12090 return -TARGET_EFAULT; 12091 } 12092 } 12093 n = lock_user_string(arg2); 12094 if (n) { 12095 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 12096 } else { 12097 ret = -TARGET_EFAULT; 12098 } 12099 unlock_user(n, arg2, 0); 12100 unlock_user(v, arg3, arg4); 12101 } 12102 return ret; 12103 case TARGET_NR_removexattr: 12104 case TARGET_NR_lremovexattr: 12105 { 12106 void *p, *n; 12107 p = lock_user_string(arg1); 12108 n = lock_user_string(arg2); 12109 if (p && n) { 12110 if (num == TARGET_NR_removexattr) { 12111 ret = get_errno(removexattr(p, n)); 12112 } else { 12113 ret = get_errno(lremovexattr(p, n)); 12114 } 12115 } else { 12116 ret = -TARGET_EFAULT; 12117 } 12118 unlock_user(p, arg1, 0); 12119 unlock_user(n, arg2, 0); 12120 } 12121 return ret; 12122 case TARGET_NR_fremovexattr: 12123 { 12124 void *n; 12125 n = lock_user_string(arg2); 12126 if (n) { 12127 ret = get_errno(fremovexattr(arg1, n)); 12128 } else { 12129 ret = -TARGET_EFAULT; 12130 } 12131 unlock_user(n, arg2, 0); 12132 } 12133 return ret; 12134 #endif 12135 #endif /* CONFIG_ATTR */ 12136 #ifdef TARGET_NR_set_thread_area 12137 case TARGET_NR_set_thread_area: 12138 #if defined(TARGET_MIPS) 12139 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; 12140 return 0; 12141 #elif defined(TARGET_CRIS) 12142 if (arg1 & 0xff) 12143 ret = -TARGET_EINVAL; 12144 else { 12145 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; 12146 ret = 0; 12147 } 12148 return ret; 12149 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 12150 return do_set_thread_area(cpu_env, arg1); 12151 #elif defined(TARGET_M68K) 12152 { 12153 TaskState *ts = cpu->opaque; 12154 ts->tp_value = arg1; 12155 return 0; 12156 } 12157 #else 12158 return -TARGET_ENOSYS; 12159 #endif 12160 #endif 12161 #ifdef TARGET_NR_get_thread_area 12162 case TARGET_NR_get_thread_area: 12163 #if defined(TARGET_I386) && defined(TARGET_ABI32) 12164 return do_get_thread_area(cpu_env, arg1); 12165 #elif defined(TARGET_M68K) 12166 { 12167 TaskState *ts = cpu->opaque; 12168 return ts->tp_value; 12169 } 12170 #else 12171 return -TARGET_ENOSYS; 12172 #endif 12173 #endif 12174 #ifdef TARGET_NR_getdomainname 12175 case TARGET_NR_getdomainname: 12176 return -TARGET_ENOSYS; 12177 #endif 12178 12179 #ifdef TARGET_NR_clock_settime 12180 case TARGET_NR_clock_settime: 12181 { 12182 struct timespec ts; 12183 12184 ret = target_to_host_timespec(&ts, arg2); 12185 if (!is_error(ret)) { 12186 ret = get_errno(clock_settime(arg1, &ts)); 12187 } 12188 return ret; 12189 } 12190 #endif 12191 #ifdef TARGET_NR_clock_settime64 12192 case TARGET_NR_clock_settime64: 12193 { 12194 struct timespec ts; 12195 12196 ret = target_to_host_timespec64(&ts, arg2); 12197 if (!is_error(ret)) { 12198 ret = get_errno(clock_settime(arg1, &ts)); 12199 } 12200 return ret; 12201 } 12202 #endif 12203 #ifdef TARGET_NR_clock_gettime 12204 case TARGET_NR_clock_gettime: 12205 { 12206 struct timespec ts; 12207 ret = get_errno(clock_gettime(arg1, &ts)); 12208 if (!is_error(ret)) { 12209 ret = host_to_target_timespec(arg2, &ts); 12210 } 12211 return ret; 12212 } 12213 #endif 12214 #ifdef TARGET_NR_clock_gettime64 12215 case TARGET_NR_clock_gettime64: 12216 { 12217 struct timespec ts; 12218 ret = get_errno(clock_gettime(arg1, &ts)); 12219 if (!is_error(ret)) { 12220 ret = host_to_target_timespec64(arg2, &ts); 12221 } 12222 return ret; 12223 } 12224 #endif 12225 #ifdef TARGET_NR_clock_getres 12226 case TARGET_NR_clock_getres: 12227 { 12228 struct timespec ts; 12229 ret = get_errno(clock_getres(arg1, &ts)); 12230 if (!is_error(ret)) { 12231 host_to_target_timespec(arg2, &ts); 12232 } 12233 return ret; 12234 } 12235 #endif 12236 #ifdef TARGET_NR_clock_getres_time64 12237 case TARGET_NR_clock_getres_time64: 12238 { 12239 struct timespec ts; 12240 ret = get_errno(clock_getres(arg1, &ts)); 12241 if (!is_error(ret)) { 12242 host_to_target_timespec64(arg2, &ts); 12243 } 12244 return ret; 12245 } 12246 #endif 12247 #ifdef TARGET_NR_clock_nanosleep 12248 case TARGET_NR_clock_nanosleep: 12249 { 12250 struct timespec ts; 12251 if (target_to_host_timespec(&ts, arg3)) { 12252 return -TARGET_EFAULT; 12253 } 12254 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12255 &ts, arg4 ? &ts : NULL)); 12256 /* 12257 * if the call is interrupted by a signal handler, it fails 12258 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12259 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12260 */ 12261 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12262 host_to_target_timespec(arg4, &ts)) { 12263 return -TARGET_EFAULT; 12264 } 12265 12266 return ret; 12267 } 12268 #endif 12269 #ifdef TARGET_NR_clock_nanosleep_time64 12270 case TARGET_NR_clock_nanosleep_time64: 12271 { 12272 struct timespec ts; 12273 12274 if (target_to_host_timespec64(&ts, arg3)) { 12275 return -TARGET_EFAULT; 12276 } 12277 12278 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12279 &ts, arg4 ? &ts : NULL)); 12280 12281 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12282 host_to_target_timespec64(arg4, &ts)) { 12283 return -TARGET_EFAULT; 12284 } 12285 return ret; 12286 } 12287 #endif 12288 12289 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 12290 case TARGET_NR_set_tid_address: 12291 return get_errno(set_tid_address((int *)g2h(cpu, arg1))); 12292 #endif 12293 12294 case TARGET_NR_tkill: 12295 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12296 12297 case TARGET_NR_tgkill: 12298 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12299 target_to_host_signal(arg3))); 12300 12301 #ifdef TARGET_NR_set_robust_list 12302 case TARGET_NR_set_robust_list: 12303 case TARGET_NR_get_robust_list: 12304 /* The ABI for supporting robust futexes has userspace pass 12305 * the kernel a pointer to a linked list which is updated by 12306 * userspace after the syscall; the list is walked by the kernel 12307 * when the thread exits. Since the linked list in QEMU guest 12308 * memory isn't a valid linked list for the host and we have 12309 * no way to reliably intercept the thread-death event, we can't 12310 * support these. Silently return ENOSYS so that guest userspace 12311 * falls back to a non-robust futex implementation (which should 12312 * be OK except in the corner case of the guest crashing while 12313 * holding a mutex that is shared with another process via 12314 * shared memory). 12315 */ 12316 return -TARGET_ENOSYS; 12317 #endif 12318 12319 #if defined(TARGET_NR_utimensat) 12320 case TARGET_NR_utimensat: 12321 { 12322 struct timespec *tsp, ts[2]; 12323 if (!arg3) { 12324 tsp = NULL; 12325 } else { 12326 if (target_to_host_timespec(ts, arg3)) { 12327 return -TARGET_EFAULT; 12328 } 12329 if (target_to_host_timespec(ts + 1, arg3 + 12330 sizeof(struct target_timespec))) { 12331 return -TARGET_EFAULT; 12332 } 12333 tsp = ts; 12334 } 12335 if (!arg2) 12336 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12337 else { 12338 if (!(p = lock_user_string(arg2))) { 12339 return -TARGET_EFAULT; 12340 } 12341 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12342 unlock_user(p, arg2, 0); 12343 } 12344 } 12345 return ret; 12346 #endif 12347 #ifdef TARGET_NR_utimensat_time64 12348 case TARGET_NR_utimensat_time64: 12349 { 12350 struct timespec *tsp, ts[2]; 12351 if (!arg3) { 12352 tsp = NULL; 12353 } else { 12354 if (target_to_host_timespec64(ts, arg3)) { 12355 return -TARGET_EFAULT; 12356 } 12357 if (target_to_host_timespec64(ts + 1, arg3 + 12358 sizeof(struct target__kernel_timespec))) { 12359 return -TARGET_EFAULT; 12360 } 12361 tsp = ts; 12362 } 12363 if (!arg2) 12364 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12365 else { 12366 p = lock_user_string(arg2); 12367 if (!p) { 12368 return -TARGET_EFAULT; 12369 } 12370 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12371 unlock_user(p, arg2, 0); 12372 } 12373 } 12374 return ret; 12375 #endif 12376 #ifdef TARGET_NR_futex 12377 case TARGET_NR_futex: 12378 return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6); 12379 #endif 12380 #ifdef TARGET_NR_futex_time64 12381 case TARGET_NR_futex_time64: 12382 return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6); 12383 #endif 12384 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 12385 case TARGET_NR_inotify_init: 12386 ret = get_errno(sys_inotify_init()); 12387 if (ret >= 0) { 12388 fd_trans_register(ret, &target_inotify_trans); 12389 } 12390 return ret; 12391 #endif 12392 #ifdef CONFIG_INOTIFY1 12393 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 12394 case TARGET_NR_inotify_init1: 12395 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1, 12396 fcntl_flags_tbl))); 12397 if (ret >= 0) { 12398 fd_trans_register(ret, &target_inotify_trans); 12399 } 12400 return ret; 12401 #endif 12402 #endif 12403 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 12404 case TARGET_NR_inotify_add_watch: 12405 p = lock_user_string(arg2); 12406 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); 12407 unlock_user(p, arg2, 0); 12408 return ret; 12409 #endif 12410 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 12411 case TARGET_NR_inotify_rm_watch: 12412 return get_errno(sys_inotify_rm_watch(arg1, arg2)); 12413 #endif 12414 12415 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12416 case TARGET_NR_mq_open: 12417 { 12418 struct mq_attr posix_mq_attr; 12419 struct mq_attr *pposix_mq_attr; 12420 int host_flags; 12421 12422 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12423 pposix_mq_attr = NULL; 12424 if (arg4) { 12425 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12426 return -TARGET_EFAULT; 12427 } 12428 pposix_mq_attr = &posix_mq_attr; 12429 } 12430 p = lock_user_string(arg1 - 1); 12431 if (!p) { 12432 return -TARGET_EFAULT; 12433 } 12434 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12435 unlock_user (p, arg1, 0); 12436 } 12437 return ret; 12438 12439 case TARGET_NR_mq_unlink: 12440 p = lock_user_string(arg1 - 1); 12441 if (!p) { 12442 return -TARGET_EFAULT; 12443 } 12444 ret = get_errno(mq_unlink(p)); 12445 unlock_user (p, arg1, 0); 12446 return ret; 12447 12448 #ifdef TARGET_NR_mq_timedsend 12449 case TARGET_NR_mq_timedsend: 12450 { 12451 struct timespec ts; 12452 12453 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12454 if (arg5 != 0) { 12455 if (target_to_host_timespec(&ts, arg5)) { 12456 return -TARGET_EFAULT; 12457 } 12458 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12459 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12460 return -TARGET_EFAULT; 12461 } 12462 } else { 12463 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12464 } 12465 unlock_user (p, arg2, arg3); 12466 } 12467 return ret; 12468 #endif 12469 #ifdef TARGET_NR_mq_timedsend_time64 12470 case TARGET_NR_mq_timedsend_time64: 12471 { 12472 struct timespec ts; 12473 12474 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12475 if (arg5 != 0) { 12476 if (target_to_host_timespec64(&ts, arg5)) { 12477 return -TARGET_EFAULT; 12478 } 12479 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12480 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12481 return -TARGET_EFAULT; 12482 } 12483 } else { 12484 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12485 } 12486 unlock_user(p, arg2, arg3); 12487 } 12488 return ret; 12489 #endif 12490 12491 #ifdef TARGET_NR_mq_timedreceive 12492 case TARGET_NR_mq_timedreceive: 12493 { 12494 struct timespec ts; 12495 unsigned int prio; 12496 12497 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12498 if (arg5 != 0) { 12499 if (target_to_host_timespec(&ts, arg5)) { 12500 return -TARGET_EFAULT; 12501 } 12502 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12503 &prio, &ts)); 12504 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12505 return -TARGET_EFAULT; 12506 } 12507 } else { 12508 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12509 &prio, NULL)); 12510 } 12511 unlock_user (p, arg2, arg3); 12512 if (arg4 != 0) 12513 put_user_u32(prio, arg4); 12514 } 12515 return ret; 12516 #endif 12517 #ifdef TARGET_NR_mq_timedreceive_time64 12518 case TARGET_NR_mq_timedreceive_time64: 12519 { 12520 struct timespec ts; 12521 unsigned int prio; 12522 12523 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12524 if (arg5 != 0) { 12525 if (target_to_host_timespec64(&ts, arg5)) { 12526 return -TARGET_EFAULT; 12527 } 12528 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12529 &prio, &ts)); 12530 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12531 return -TARGET_EFAULT; 12532 } 12533 } else { 12534 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12535 &prio, NULL)); 12536 } 12537 unlock_user(p, arg2, arg3); 12538 if (arg4 != 0) { 12539 put_user_u32(prio, arg4); 12540 } 12541 } 12542 return ret; 12543 #endif 12544 12545 /* Not implemented for now... */ 12546 /* case TARGET_NR_mq_notify: */ 12547 /* break; */ 12548 12549 case TARGET_NR_mq_getsetattr: 12550 { 12551 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 12552 ret = 0; 12553 if (arg2 != 0) { 12554 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 12555 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 12556 &posix_mq_attr_out)); 12557 } else if (arg3 != 0) { 12558 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 12559 } 12560 if (ret == 0 && arg3 != 0) { 12561 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 12562 } 12563 } 12564 return ret; 12565 #endif 12566 12567 #ifdef CONFIG_SPLICE 12568 #ifdef TARGET_NR_tee 12569 case TARGET_NR_tee: 12570 { 12571 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 12572 } 12573 return ret; 12574 #endif 12575 #ifdef TARGET_NR_splice 12576 case TARGET_NR_splice: 12577 { 12578 loff_t loff_in, loff_out; 12579 loff_t *ploff_in = NULL, *ploff_out = NULL; 12580 if (arg2) { 12581 if (get_user_u64(loff_in, arg2)) { 12582 return -TARGET_EFAULT; 12583 } 12584 ploff_in = &loff_in; 12585 } 12586 if (arg4) { 12587 if (get_user_u64(loff_out, arg4)) { 12588 return -TARGET_EFAULT; 12589 } 12590 ploff_out = &loff_out; 12591 } 12592 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 12593 if (arg2) { 12594 if (put_user_u64(loff_in, arg2)) { 12595 return -TARGET_EFAULT; 12596 } 12597 } 12598 if (arg4) { 12599 if (put_user_u64(loff_out, arg4)) { 12600 return -TARGET_EFAULT; 12601 } 12602 } 12603 } 12604 return ret; 12605 #endif 12606 #ifdef TARGET_NR_vmsplice 12607 case TARGET_NR_vmsplice: 12608 { 12609 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 12610 if (vec != NULL) { 12611 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 12612 unlock_iovec(vec, arg2, arg3, 0); 12613 } else { 12614 ret = -host_to_target_errno(errno); 12615 } 12616 } 12617 return ret; 12618 #endif 12619 #endif /* CONFIG_SPLICE */ 12620 #ifdef CONFIG_EVENTFD 12621 #if defined(TARGET_NR_eventfd) 12622 case TARGET_NR_eventfd: 12623 ret = get_errno(eventfd(arg1, 0)); 12624 if (ret >= 0) { 12625 fd_trans_register(ret, &target_eventfd_trans); 12626 } 12627 return ret; 12628 #endif 12629 #if defined(TARGET_NR_eventfd2) 12630 case TARGET_NR_eventfd2: 12631 { 12632 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 12633 if (arg2 & TARGET_O_NONBLOCK) { 12634 host_flags |= O_NONBLOCK; 12635 } 12636 if (arg2 & TARGET_O_CLOEXEC) { 12637 host_flags |= O_CLOEXEC; 12638 } 12639 ret = get_errno(eventfd(arg1, host_flags)); 12640 if (ret >= 0) { 12641 fd_trans_register(ret, &target_eventfd_trans); 12642 } 12643 return ret; 12644 } 12645 #endif 12646 #endif /* CONFIG_EVENTFD */ 12647 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 12648 case TARGET_NR_fallocate: 12649 #if TARGET_ABI_BITS == 32 12650 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 12651 target_offset64(arg5, arg6))); 12652 #else 12653 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 12654 #endif 12655 return ret; 12656 #endif 12657 #if defined(CONFIG_SYNC_FILE_RANGE) 12658 #if defined(TARGET_NR_sync_file_range) 12659 case TARGET_NR_sync_file_range: 12660 #if TARGET_ABI_BITS == 32 12661 #if defined(TARGET_MIPS) 12662 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12663 target_offset64(arg5, arg6), arg7)); 12664 #else 12665 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 12666 target_offset64(arg4, arg5), arg6)); 12667 #endif /* !TARGET_MIPS */ 12668 #else 12669 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 12670 #endif 12671 return ret; 12672 #endif 12673 #if defined(TARGET_NR_sync_file_range2) || \ 12674 defined(TARGET_NR_arm_sync_file_range) 12675 #if defined(TARGET_NR_sync_file_range2) 12676 case TARGET_NR_sync_file_range2: 12677 #endif 12678 #if defined(TARGET_NR_arm_sync_file_range) 12679 case TARGET_NR_arm_sync_file_range: 12680 #endif 12681 /* This is like sync_file_range but the arguments are reordered */ 12682 #if TARGET_ABI_BITS == 32 12683 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12684 target_offset64(arg5, arg6), arg2)); 12685 #else 12686 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 12687 #endif 12688 return ret; 12689 #endif 12690 #endif 12691 #if defined(TARGET_NR_signalfd4) 12692 case TARGET_NR_signalfd4: 12693 return do_signalfd4(arg1, arg2, arg4); 12694 #endif 12695 #if defined(TARGET_NR_signalfd) 12696 case TARGET_NR_signalfd: 12697 return do_signalfd4(arg1, arg2, 0); 12698 #endif 12699 #if defined(CONFIG_EPOLL) 12700 #if defined(TARGET_NR_epoll_create) 12701 case TARGET_NR_epoll_create: 12702 return get_errno(epoll_create(arg1)); 12703 #endif 12704 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12705 case TARGET_NR_epoll_create1: 12706 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 12707 #endif 12708 #if defined(TARGET_NR_epoll_ctl) 12709 case TARGET_NR_epoll_ctl: 12710 { 12711 struct epoll_event ep; 12712 struct epoll_event *epp = 0; 12713 if (arg4) { 12714 if (arg2 != EPOLL_CTL_DEL) { 12715 struct target_epoll_event *target_ep; 12716 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12717 return -TARGET_EFAULT; 12718 } 12719 ep.events = tswap32(target_ep->events); 12720 /* 12721 * The epoll_data_t union is just opaque data to the kernel, 12722 * so we transfer all 64 bits across and need not worry what 12723 * actual data type it is. 12724 */ 12725 ep.data.u64 = tswap64(target_ep->data.u64); 12726 unlock_user_struct(target_ep, arg4, 0); 12727 } 12728 /* 12729 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 12730 * non-null pointer, even though this argument is ignored. 12731 * 12732 */ 12733 epp = &ep; 12734 } 12735 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12736 } 12737 #endif 12738 12739 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12740 #if defined(TARGET_NR_epoll_wait) 12741 case TARGET_NR_epoll_wait: 12742 #endif 12743 #if defined(TARGET_NR_epoll_pwait) 12744 case TARGET_NR_epoll_pwait: 12745 #endif 12746 { 12747 struct target_epoll_event *target_ep; 12748 struct epoll_event *ep; 12749 int epfd = arg1; 12750 int maxevents = arg3; 12751 int timeout = arg4; 12752 12753 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12754 return -TARGET_EINVAL; 12755 } 12756 12757 target_ep = lock_user(VERIFY_WRITE, arg2, 12758 maxevents * sizeof(struct target_epoll_event), 1); 12759 if (!target_ep) { 12760 return -TARGET_EFAULT; 12761 } 12762 12763 ep = g_try_new(struct epoll_event, maxevents); 12764 if (!ep) { 12765 unlock_user(target_ep, arg2, 0); 12766 return -TARGET_ENOMEM; 12767 } 12768 12769 switch (num) { 12770 #if defined(TARGET_NR_epoll_pwait) 12771 case TARGET_NR_epoll_pwait: 12772 { 12773 target_sigset_t *target_set; 12774 sigset_t _set, *set = &_set; 12775 12776 if (arg5) { 12777 if (arg6 != sizeof(target_sigset_t)) { 12778 ret = -TARGET_EINVAL; 12779 break; 12780 } 12781 12782 target_set = lock_user(VERIFY_READ, arg5, 12783 sizeof(target_sigset_t), 1); 12784 if (!target_set) { 12785 ret = -TARGET_EFAULT; 12786 break; 12787 } 12788 target_to_host_sigset(set, target_set); 12789 unlock_user(target_set, arg5, 0); 12790 } else { 12791 set = NULL; 12792 } 12793 12794 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12795 set, SIGSET_T_SIZE)); 12796 break; 12797 } 12798 #endif 12799 #if defined(TARGET_NR_epoll_wait) 12800 case TARGET_NR_epoll_wait: 12801 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12802 NULL, 0)); 12803 break; 12804 #endif 12805 default: 12806 ret = -TARGET_ENOSYS; 12807 } 12808 if (!is_error(ret)) { 12809 int i; 12810 for (i = 0; i < ret; i++) { 12811 target_ep[i].events = tswap32(ep[i].events); 12812 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12813 } 12814 unlock_user(target_ep, arg2, 12815 ret * sizeof(struct target_epoll_event)); 12816 } else { 12817 unlock_user(target_ep, arg2, 0); 12818 } 12819 g_free(ep); 12820 return ret; 12821 } 12822 #endif 12823 #endif 12824 #ifdef TARGET_NR_prlimit64 12825 case TARGET_NR_prlimit64: 12826 { 12827 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12828 struct target_rlimit64 *target_rnew, *target_rold; 12829 struct host_rlimit64 rnew, rold, *rnewp = 0; 12830 int resource = target_to_host_resource(arg2); 12831 12832 if (arg3 && (resource != RLIMIT_AS && 12833 resource != RLIMIT_DATA && 12834 resource != RLIMIT_STACK)) { 12835 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12836 return -TARGET_EFAULT; 12837 } 12838 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12839 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12840 unlock_user_struct(target_rnew, arg3, 0); 12841 rnewp = &rnew; 12842 } 12843 12844 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12845 if (!is_error(ret) && arg4) { 12846 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12847 return -TARGET_EFAULT; 12848 } 12849 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12850 target_rold->rlim_max = tswap64(rold.rlim_max); 12851 unlock_user_struct(target_rold, arg4, 1); 12852 } 12853 return ret; 12854 } 12855 #endif 12856 #ifdef TARGET_NR_gethostname 12857 case TARGET_NR_gethostname: 12858 { 12859 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12860 if (name) { 12861 ret = get_errno(gethostname(name, arg2)); 12862 unlock_user(name, arg1, arg2); 12863 } else { 12864 ret = -TARGET_EFAULT; 12865 } 12866 return ret; 12867 } 12868 #endif 12869 #ifdef TARGET_NR_atomic_cmpxchg_32 12870 case TARGET_NR_atomic_cmpxchg_32: 12871 { 12872 /* should use start_exclusive from main.c */ 12873 abi_ulong mem_value; 12874 if (get_user_u32(mem_value, arg6)) { 12875 target_siginfo_t info; 12876 info.si_signo = SIGSEGV; 12877 info.si_errno = 0; 12878 info.si_code = TARGET_SEGV_MAPERR; 12879 info._sifields._sigfault._addr = arg6; 12880 queue_signal((CPUArchState *)cpu_env, info.si_signo, 12881 QEMU_SI_FAULT, &info); 12882 ret = 0xdeadbeef; 12883 12884 } 12885 if (mem_value == arg2) 12886 put_user_u32(arg1, arg6); 12887 return mem_value; 12888 } 12889 #endif 12890 #ifdef TARGET_NR_atomic_barrier 12891 case TARGET_NR_atomic_barrier: 12892 /* Like the kernel implementation and the 12893 qemu arm barrier, no-op this? */ 12894 return 0; 12895 #endif 12896 12897 #ifdef TARGET_NR_timer_create 12898 case TARGET_NR_timer_create: 12899 { 12900 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12901 12902 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12903 12904 int clkid = arg1; 12905 int timer_index = next_free_host_timer(); 12906 12907 if (timer_index < 0) { 12908 ret = -TARGET_EAGAIN; 12909 } else { 12910 timer_t *phtimer = g_posix_timers + timer_index; 12911 12912 if (arg2) { 12913 phost_sevp = &host_sevp; 12914 ret = target_to_host_sigevent(phost_sevp, arg2); 12915 if (ret != 0) { 12916 return ret; 12917 } 12918 } 12919 12920 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12921 if (ret) { 12922 phtimer = NULL; 12923 } else { 12924 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12925 return -TARGET_EFAULT; 12926 } 12927 } 12928 } 12929 return ret; 12930 } 12931 #endif 12932 12933 #ifdef TARGET_NR_timer_settime 12934 case TARGET_NR_timer_settime: 12935 { 12936 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12937 * struct itimerspec * old_value */ 12938 target_timer_t timerid = get_timer_id(arg1); 12939 12940 if (timerid < 0) { 12941 ret = timerid; 12942 } else if (arg3 == 0) { 12943 ret = -TARGET_EINVAL; 12944 } else { 12945 timer_t htimer = g_posix_timers[timerid]; 12946 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12947 12948 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12949 return -TARGET_EFAULT; 12950 } 12951 ret = get_errno( 12952 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12953 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12954 return -TARGET_EFAULT; 12955 } 12956 } 12957 return ret; 12958 } 12959 #endif 12960 12961 #ifdef TARGET_NR_timer_settime64 12962 case TARGET_NR_timer_settime64: 12963 { 12964 target_timer_t timerid = get_timer_id(arg1); 12965 12966 if (timerid < 0) { 12967 ret = timerid; 12968 } else if (arg3 == 0) { 12969 ret = -TARGET_EINVAL; 12970 } else { 12971 timer_t htimer = g_posix_timers[timerid]; 12972 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12973 12974 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 12975 return -TARGET_EFAULT; 12976 } 12977 ret = get_errno( 12978 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12979 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 12980 return -TARGET_EFAULT; 12981 } 12982 } 12983 return ret; 12984 } 12985 #endif 12986 12987 #ifdef TARGET_NR_timer_gettime 12988 case TARGET_NR_timer_gettime: 12989 { 12990 /* args: timer_t timerid, struct itimerspec *curr_value */ 12991 target_timer_t timerid = get_timer_id(arg1); 12992 12993 if (timerid < 0) { 12994 ret = timerid; 12995 } else if (!arg2) { 12996 ret = -TARGET_EFAULT; 12997 } else { 12998 timer_t htimer = g_posix_timers[timerid]; 12999 struct itimerspec hspec; 13000 ret = get_errno(timer_gettime(htimer, &hspec)); 13001 13002 if (host_to_target_itimerspec(arg2, &hspec)) { 13003 ret = -TARGET_EFAULT; 13004 } 13005 } 13006 return ret; 13007 } 13008 #endif 13009 13010 #ifdef TARGET_NR_timer_gettime64 13011 case TARGET_NR_timer_gettime64: 13012 { 13013 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 13014 target_timer_t timerid = get_timer_id(arg1); 13015 13016 if (timerid < 0) { 13017 ret = timerid; 13018 } else if (!arg2) { 13019 ret = -TARGET_EFAULT; 13020 } else { 13021 timer_t htimer = g_posix_timers[timerid]; 13022 struct itimerspec hspec; 13023 ret = get_errno(timer_gettime(htimer, &hspec)); 13024 13025 if (host_to_target_itimerspec64(arg2, &hspec)) { 13026 ret = -TARGET_EFAULT; 13027 } 13028 } 13029 return ret; 13030 } 13031 #endif 13032 13033 #ifdef TARGET_NR_timer_getoverrun 13034 case TARGET_NR_timer_getoverrun: 13035 { 13036 /* args: timer_t timerid */ 13037 target_timer_t timerid = get_timer_id(arg1); 13038 13039 if (timerid < 0) { 13040 ret = timerid; 13041 } else { 13042 timer_t htimer = g_posix_timers[timerid]; 13043 ret = get_errno(timer_getoverrun(htimer)); 13044 } 13045 return ret; 13046 } 13047 #endif 13048 13049 #ifdef TARGET_NR_timer_delete 13050 case TARGET_NR_timer_delete: 13051 { 13052 /* args: timer_t timerid */ 13053 target_timer_t timerid = get_timer_id(arg1); 13054 13055 if (timerid < 0) { 13056 ret = timerid; 13057 } else { 13058 timer_t htimer = g_posix_timers[timerid]; 13059 ret = get_errno(timer_delete(htimer)); 13060 g_posix_timers[timerid] = 0; 13061 } 13062 return ret; 13063 } 13064 #endif 13065 13066 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 13067 case TARGET_NR_timerfd_create: 13068 return get_errno(timerfd_create(arg1, 13069 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 13070 #endif 13071 13072 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 13073 case TARGET_NR_timerfd_gettime: 13074 { 13075 struct itimerspec its_curr; 13076 13077 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13078 13079 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 13080 return -TARGET_EFAULT; 13081 } 13082 } 13083 return ret; 13084 #endif 13085 13086 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 13087 case TARGET_NR_timerfd_gettime64: 13088 { 13089 struct itimerspec its_curr; 13090 13091 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13092 13093 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 13094 return -TARGET_EFAULT; 13095 } 13096 } 13097 return ret; 13098 #endif 13099 13100 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 13101 case TARGET_NR_timerfd_settime: 13102 { 13103 struct itimerspec its_new, its_old, *p_new; 13104 13105 if (arg3) { 13106 if (target_to_host_itimerspec(&its_new, arg3)) { 13107 return -TARGET_EFAULT; 13108 } 13109 p_new = &its_new; 13110 } else { 13111 p_new = NULL; 13112 } 13113 13114 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13115 13116 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 13117 return -TARGET_EFAULT; 13118 } 13119 } 13120 return ret; 13121 #endif 13122 13123 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 13124 case TARGET_NR_timerfd_settime64: 13125 { 13126 struct itimerspec its_new, its_old, *p_new; 13127 13128 if (arg3) { 13129 if (target_to_host_itimerspec64(&its_new, arg3)) { 13130 return -TARGET_EFAULT; 13131 } 13132 p_new = &its_new; 13133 } else { 13134 p_new = NULL; 13135 } 13136 13137 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13138 13139 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 13140 return -TARGET_EFAULT; 13141 } 13142 } 13143 return ret; 13144 #endif 13145 13146 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 13147 case TARGET_NR_ioprio_get: 13148 return get_errno(ioprio_get(arg1, arg2)); 13149 #endif 13150 13151 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 13152 case TARGET_NR_ioprio_set: 13153 return get_errno(ioprio_set(arg1, arg2, arg3)); 13154 #endif 13155 13156 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 13157 case TARGET_NR_setns: 13158 return get_errno(setns(arg1, arg2)); 13159 #endif 13160 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 13161 case TARGET_NR_unshare: 13162 return get_errno(unshare(arg1)); 13163 #endif 13164 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 13165 case TARGET_NR_kcmp: 13166 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 13167 #endif 13168 #ifdef TARGET_NR_swapcontext 13169 case TARGET_NR_swapcontext: 13170 /* PowerPC specific. */ 13171 return do_swapcontext(cpu_env, arg1, arg2, arg3); 13172 #endif 13173 #ifdef TARGET_NR_memfd_create 13174 case TARGET_NR_memfd_create: 13175 p = lock_user_string(arg1); 13176 if (!p) { 13177 return -TARGET_EFAULT; 13178 } 13179 ret = get_errno(memfd_create(p, arg2)); 13180 fd_trans_unregister(ret); 13181 unlock_user(p, arg1, 0); 13182 return ret; 13183 #endif 13184 #if defined TARGET_NR_membarrier && defined __NR_membarrier 13185 case TARGET_NR_membarrier: 13186 return get_errno(membarrier(arg1, arg2)); 13187 #endif 13188 13189 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 13190 case TARGET_NR_copy_file_range: 13191 { 13192 loff_t inoff, outoff; 13193 loff_t *pinoff = NULL, *poutoff = NULL; 13194 13195 if (arg2) { 13196 if (get_user_u64(inoff, arg2)) { 13197 return -TARGET_EFAULT; 13198 } 13199 pinoff = &inoff; 13200 } 13201 if (arg4) { 13202 if (get_user_u64(outoff, arg4)) { 13203 return -TARGET_EFAULT; 13204 } 13205 poutoff = &outoff; 13206 } 13207 /* Do not sign-extend the count parameter. */ 13208 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 13209 (abi_ulong)arg5, arg6)); 13210 if (!is_error(ret) && ret > 0) { 13211 if (arg2) { 13212 if (put_user_u64(inoff, arg2)) { 13213 return -TARGET_EFAULT; 13214 } 13215 } 13216 if (arg4) { 13217 if (put_user_u64(outoff, arg4)) { 13218 return -TARGET_EFAULT; 13219 } 13220 } 13221 } 13222 } 13223 return ret; 13224 #endif 13225 13226 #if defined(TARGET_NR_pivot_root) 13227 case TARGET_NR_pivot_root: 13228 { 13229 void *p2; 13230 p = lock_user_string(arg1); /* new_root */ 13231 p2 = lock_user_string(arg2); /* put_old */ 13232 if (!p || !p2) { 13233 ret = -TARGET_EFAULT; 13234 } else { 13235 ret = get_errno(pivot_root(p, p2)); 13236 } 13237 unlock_user(p2, arg2, 0); 13238 unlock_user(p, arg1, 0); 13239 } 13240 return ret; 13241 #endif 13242 13243 default: 13244 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 13245 return -TARGET_ENOSYS; 13246 } 13247 return ret; 13248 } 13249 13250 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 13251 abi_long arg2, abi_long arg3, abi_long arg4, 13252 abi_long arg5, abi_long arg6, abi_long arg7, 13253 abi_long arg8) 13254 { 13255 CPUState *cpu = env_cpu(cpu_env); 13256 abi_long ret; 13257 13258 #ifdef DEBUG_ERESTARTSYS 13259 /* Debug-only code for exercising the syscall-restart code paths 13260 * in the per-architecture cpu main loops: restart every syscall 13261 * the guest makes once before letting it through. 13262 */ 13263 { 13264 static bool flag; 13265 flag = !flag; 13266 if (flag) { 13267 return -TARGET_ERESTARTSYS; 13268 } 13269 } 13270 #endif 13271 13272 record_syscall_start(cpu, num, arg1, 13273 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13274 13275 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13276 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13277 } 13278 13279 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13280 arg5, arg6, arg7, arg8); 13281 13282 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13283 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13284 arg3, arg4, arg5, arg6); 13285 } 13286 13287 record_syscall_return(cpu, num, ret); 13288 return ret; 13289 } 13290