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 "user-internals.h" 131 #include "strace.h" 132 #include "signal-common.h" 133 #include "loader.h" 134 #include "user-mmap.h" 135 #include "user/safe-syscall.h" 136 #include "qemu/guest-random.h" 137 #include "qemu/selfmap.h" 138 #include "user/syscall-trace.h" 139 #include "special-errno.h" 140 #include "qapi/error.h" 141 #include "fd-trans.h" 142 #include "tcg/tcg.h" 143 144 #ifndef CLONE_IO 145 #define CLONE_IO 0x80000000 /* Clone io context */ 146 #endif 147 148 /* We can't directly call the host clone syscall, because this will 149 * badly confuse libc (breaking mutexes, for example). So we must 150 * divide clone flags into: 151 * * flag combinations that look like pthread_create() 152 * * flag combinations that look like fork() 153 * * flags we can implement within QEMU itself 154 * * flags we can't support and will return an error for 155 */ 156 /* For thread creation, all these flags must be present; for 157 * fork, none must be present. 158 */ 159 #define CLONE_THREAD_FLAGS \ 160 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 161 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 162 163 /* These flags are ignored: 164 * CLONE_DETACHED is now ignored by the kernel; 165 * CLONE_IO is just an optimisation hint to the I/O scheduler 166 */ 167 #define CLONE_IGNORED_FLAGS \ 168 (CLONE_DETACHED | CLONE_IO) 169 170 /* Flags for fork which we can implement within QEMU itself */ 171 #define CLONE_OPTIONAL_FORK_FLAGS \ 172 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 173 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 174 175 /* Flags for thread creation which we can implement within QEMU itself */ 176 #define CLONE_OPTIONAL_THREAD_FLAGS \ 177 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 178 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 179 180 #define CLONE_INVALID_FORK_FLAGS \ 181 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 182 183 #define CLONE_INVALID_THREAD_FLAGS \ 184 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 185 CLONE_IGNORED_FLAGS)) 186 187 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 188 * have almost all been allocated. We cannot support any of 189 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 190 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 191 * The checks against the invalid thread masks above will catch these. 192 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 193 */ 194 195 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 196 * once. This exercises the codepaths for restart. 197 */ 198 //#define DEBUG_ERESTARTSYS 199 200 //#include <linux/msdos_fs.h> 201 #define VFAT_IOCTL_READDIR_BOTH \ 202 _IOC(_IOC_READ, 'r', 1, (sizeof(struct linux_dirent) + 256) * 2) 203 #define VFAT_IOCTL_READDIR_SHORT \ 204 _IOC(_IOC_READ, 'r', 2, (sizeof(struct linux_dirent) + 256) * 2) 205 206 #undef _syscall0 207 #undef _syscall1 208 #undef _syscall2 209 #undef _syscall3 210 #undef _syscall4 211 #undef _syscall5 212 #undef _syscall6 213 214 #define _syscall0(type,name) \ 215 static type name (void) \ 216 { \ 217 return syscall(__NR_##name); \ 218 } 219 220 #define _syscall1(type,name,type1,arg1) \ 221 static type name (type1 arg1) \ 222 { \ 223 return syscall(__NR_##name, arg1); \ 224 } 225 226 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 227 static type name (type1 arg1,type2 arg2) \ 228 { \ 229 return syscall(__NR_##name, arg1, arg2); \ 230 } 231 232 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 233 static type name (type1 arg1,type2 arg2,type3 arg3) \ 234 { \ 235 return syscall(__NR_##name, arg1, arg2, arg3); \ 236 } 237 238 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 239 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 240 { \ 241 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 242 } 243 244 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 245 type5,arg5) \ 246 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 247 { \ 248 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 249 } 250 251 252 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 253 type5,arg5,type6,arg6) \ 254 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 255 type6 arg6) \ 256 { \ 257 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 258 } 259 260 261 #define __NR_sys_uname __NR_uname 262 #define __NR_sys_getcwd1 __NR_getcwd 263 #define __NR_sys_getdents __NR_getdents 264 #define __NR_sys_getdents64 __NR_getdents64 265 #define __NR_sys_getpriority __NR_getpriority 266 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 267 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 268 #define __NR_sys_syslog __NR_syslog 269 #if defined(__NR_futex) 270 # define __NR_sys_futex __NR_futex 271 #endif 272 #if defined(__NR_futex_time64) 273 # define __NR_sys_futex_time64 __NR_futex_time64 274 #endif 275 #define __NR_sys_inotify_init __NR_inotify_init 276 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch 277 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch 278 #define __NR_sys_statx __NR_statx 279 280 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__) 281 #define __NR__llseek __NR_lseek 282 #endif 283 284 /* Newer kernel ports have llseek() instead of _llseek() */ 285 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 286 #define TARGET_NR__llseek TARGET_NR_llseek 287 #endif 288 289 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */ 290 #ifndef TARGET_O_NONBLOCK_MASK 291 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK 292 #endif 293 294 #define __NR_sys_gettid __NR_gettid 295 _syscall0(int, sys_gettid) 296 297 /* For the 64-bit guest on 32-bit host case we must emulate 298 * getdents using getdents64, because otherwise the host 299 * might hand us back more dirent records than we can fit 300 * into the guest buffer after structure format conversion. 301 * Otherwise we emulate getdents with getdents if the host has it. 302 */ 303 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS 304 #define EMULATE_GETDENTS_WITH_GETDENTS 305 #endif 306 307 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS) 308 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 309 #endif 310 #if (defined(TARGET_NR_getdents) && \ 311 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \ 312 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 313 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 314 #endif 315 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 316 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 317 loff_t *, res, uint, wh); 318 #endif 319 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 320 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 321 siginfo_t *, uinfo) 322 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 323 #ifdef __NR_exit_group 324 _syscall1(int,exit_group,int,error_code) 325 #endif 326 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 327 _syscall1(int,set_tid_address,int *,tidptr) 328 #endif 329 #if defined(__NR_futex) 330 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 331 const struct timespec *,timeout,int *,uaddr2,int,val3) 332 #endif 333 #if defined(__NR_futex_time64) 334 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, 335 const struct timespec *,timeout,int *,uaddr2,int,val3) 336 #endif 337 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 338 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 339 unsigned long *, user_mask_ptr); 340 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 341 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 342 unsigned long *, user_mask_ptr); 343 #define __NR_sys_getcpu __NR_getcpu 344 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); 345 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 346 void *, arg); 347 _syscall2(int, capget, struct __user_cap_header_struct *, header, 348 struct __user_cap_data_struct *, data); 349 _syscall2(int, capset, struct __user_cap_header_struct *, header, 350 struct __user_cap_data_struct *, data); 351 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 352 _syscall2(int, ioprio_get, int, which, int, who) 353 #endif 354 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 355 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 356 #endif 357 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 358 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 359 #endif 360 361 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 362 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 363 unsigned long, idx1, unsigned long, idx2) 364 #endif 365 366 /* 367 * It is assumed that struct statx is architecture independent. 368 */ 369 #if defined(TARGET_NR_statx) && defined(__NR_statx) 370 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags, 371 unsigned int, mask, struct target_statx *, statxbuf) 372 #endif 373 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) 374 _syscall2(int, membarrier, int, cmd, int, flags) 375 #endif 376 377 static const bitmask_transtbl fcntl_flags_tbl[] = { 378 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 379 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 380 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 381 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 382 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 383 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 384 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 385 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 386 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 387 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 388 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 389 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 390 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 391 #if defined(O_DIRECT) 392 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 393 #endif 394 #if defined(O_NOATIME) 395 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 396 #endif 397 #if defined(O_CLOEXEC) 398 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 399 #endif 400 #if defined(O_PATH) 401 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 402 #endif 403 #if defined(O_TMPFILE) 404 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE }, 405 #endif 406 /* Don't terminate the list prematurely on 64-bit host+guest. */ 407 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 408 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 409 #endif 410 { 0, 0, 0, 0 } 411 }; 412 413 _syscall2(int, sys_getcwd1, char *, buf, size_t, size) 414 415 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64) 416 #if defined(__NR_utimensat) 417 #define __NR_sys_utimensat __NR_utimensat 418 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 419 const struct timespec *,tsp,int,flags) 420 #else 421 static int sys_utimensat(int dirfd, const char *pathname, 422 const struct timespec times[2], int flags) 423 { 424 errno = ENOSYS; 425 return -1; 426 } 427 #endif 428 #endif /* TARGET_NR_utimensat */ 429 430 #ifdef TARGET_NR_renameat2 431 #if defined(__NR_renameat2) 432 #define __NR_sys_renameat2 __NR_renameat2 433 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, 434 const char *, new, unsigned int, flags) 435 #else 436 static int sys_renameat2(int oldfd, const char *old, 437 int newfd, const char *new, int flags) 438 { 439 if (flags == 0) { 440 return renameat(oldfd, old, newfd, new); 441 } 442 errno = ENOSYS; 443 return -1; 444 } 445 #endif 446 #endif /* TARGET_NR_renameat2 */ 447 448 #ifdef CONFIG_INOTIFY 449 #include <sys/inotify.h> 450 451 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 452 static int sys_inotify_init(void) 453 { 454 return (inotify_init()); 455 } 456 #endif 457 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 458 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask) 459 { 460 return (inotify_add_watch(fd, pathname, mask)); 461 } 462 #endif 463 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 464 static int sys_inotify_rm_watch(int fd, int32_t wd) 465 { 466 return (inotify_rm_watch(fd, wd)); 467 } 468 #endif 469 #ifdef CONFIG_INOTIFY1 470 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 471 static int sys_inotify_init1(int flags) 472 { 473 return (inotify_init1(flags)); 474 } 475 #endif 476 #endif 477 #else 478 /* Userspace can usually survive runtime without inotify */ 479 #undef TARGET_NR_inotify_init 480 #undef TARGET_NR_inotify_init1 481 #undef TARGET_NR_inotify_add_watch 482 #undef TARGET_NR_inotify_rm_watch 483 #endif /* CONFIG_INOTIFY */ 484 485 #if defined(TARGET_NR_prlimit64) 486 #ifndef __NR_prlimit64 487 # define __NR_prlimit64 -1 488 #endif 489 #define __NR_sys_prlimit64 __NR_prlimit64 490 /* The glibc rlimit structure may not be that used by the underlying syscall */ 491 struct host_rlimit64 { 492 uint64_t rlim_cur; 493 uint64_t rlim_max; 494 }; 495 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 496 const struct host_rlimit64 *, new_limit, 497 struct host_rlimit64 *, old_limit) 498 #endif 499 500 501 #if defined(TARGET_NR_timer_create) 502 /* Maximum of 32 active POSIX timers allowed at any one time. */ 503 static timer_t g_posix_timers[32] = { 0, } ; 504 505 static inline int next_free_host_timer(void) 506 { 507 int k ; 508 /* FIXME: Does finding the next free slot require a lock? */ 509 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { 510 if (g_posix_timers[k] == 0) { 511 g_posix_timers[k] = (timer_t) 1; 512 return k; 513 } 514 } 515 return -1; 516 } 517 #endif 518 519 static inline int host_to_target_errno(int host_errno) 520 { 521 switch (host_errno) { 522 #define E(X) case X: return TARGET_##X; 523 #include "errnos.c.inc" 524 #undef E 525 default: 526 return host_errno; 527 } 528 } 529 530 static inline int target_to_host_errno(int target_errno) 531 { 532 switch (target_errno) { 533 #define E(X) case TARGET_##X: return X; 534 #include "errnos.c.inc" 535 #undef E 536 default: 537 return target_errno; 538 } 539 } 540 541 static inline abi_long get_errno(abi_long ret) 542 { 543 if (ret == -1) 544 return -host_to_target_errno(errno); 545 else 546 return ret; 547 } 548 549 const char *target_strerror(int err) 550 { 551 if (err == QEMU_ERESTARTSYS) { 552 return "To be restarted"; 553 } 554 if (err == QEMU_ESIGRETURN) { 555 return "Successful exit from sigreturn"; 556 } 557 558 return strerror(target_to_host_errno(err)); 559 } 560 561 #define safe_syscall0(type, name) \ 562 static type safe_##name(void) \ 563 { \ 564 return safe_syscall(__NR_##name); \ 565 } 566 567 #define safe_syscall1(type, name, type1, arg1) \ 568 static type safe_##name(type1 arg1) \ 569 { \ 570 return safe_syscall(__NR_##name, arg1); \ 571 } 572 573 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 574 static type safe_##name(type1 arg1, type2 arg2) \ 575 { \ 576 return safe_syscall(__NR_##name, arg1, arg2); \ 577 } 578 579 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 580 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 581 { \ 582 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 583 } 584 585 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 586 type4, arg4) \ 587 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 588 { \ 589 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 590 } 591 592 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 593 type4, arg4, type5, arg5) \ 594 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 595 type5 arg5) \ 596 { \ 597 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 598 } 599 600 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 601 type4, arg4, type5, arg5, type6, arg6) \ 602 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 603 type5 arg5, type6 arg6) \ 604 { \ 605 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 606 } 607 608 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 609 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 610 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 611 int, flags, mode_t, mode) 612 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) 613 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 614 struct rusage *, rusage) 615 #endif 616 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 617 int, options, struct rusage *, rusage) 618 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 619 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 620 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 621 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 622 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 623 #endif 624 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64) 625 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 626 struct timespec *, tsp, const sigset_t *, sigmask, 627 size_t, sigsetsize) 628 #endif 629 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 630 int, maxevents, int, timeout, const sigset_t *, sigmask, 631 size_t, sigsetsize) 632 #if defined(__NR_futex) 633 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 634 const struct timespec *,timeout,int *,uaddr2,int,val3) 635 #endif 636 #if defined(__NR_futex_time64) 637 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \ 638 const struct timespec *,timeout,int *,uaddr2,int,val3) 639 #endif 640 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 641 safe_syscall2(int, kill, pid_t, pid, int, sig) 642 safe_syscall2(int, tkill, int, tid, int, sig) 643 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 644 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 645 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 646 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 647 unsigned long, pos_l, unsigned long, pos_h) 648 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 649 unsigned long, pos_l, unsigned long, pos_h) 650 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 651 socklen_t, addrlen) 652 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 653 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 654 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 655 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 656 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 657 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 658 safe_syscall2(int, flock, int, fd, int, operation) 659 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64) 660 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 661 const struct timespec *, uts, size_t, sigsetsize) 662 #endif 663 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 664 int, flags) 665 #if defined(TARGET_NR_nanosleep) 666 safe_syscall2(int, nanosleep, const struct timespec *, req, 667 struct timespec *, rem) 668 #endif 669 #if defined(TARGET_NR_clock_nanosleep) || \ 670 defined(TARGET_NR_clock_nanosleep_time64) 671 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 672 const struct timespec *, req, struct timespec *, rem) 673 #endif 674 #ifdef __NR_ipc 675 #ifdef __s390x__ 676 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third, 677 void *, ptr) 678 #else 679 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 680 void *, ptr, long, fifth) 681 #endif 682 #endif 683 #ifdef __NR_msgsnd 684 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 685 int, flags) 686 #endif 687 #ifdef __NR_msgrcv 688 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 689 long, msgtype, int, flags) 690 #endif 691 #ifdef __NR_semtimedop 692 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 693 unsigned, nsops, const struct timespec *, timeout) 694 #endif 695 #if defined(TARGET_NR_mq_timedsend) || \ 696 defined(TARGET_NR_mq_timedsend_time64) 697 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 698 size_t, len, unsigned, prio, const struct timespec *, timeout) 699 #endif 700 #if defined(TARGET_NR_mq_timedreceive) || \ 701 defined(TARGET_NR_mq_timedreceive_time64) 702 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 703 size_t, len, unsigned *, prio, const struct timespec *, timeout) 704 #endif 705 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 706 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff, 707 int, outfd, loff_t *, poutoff, size_t, length, 708 unsigned int, flags) 709 #endif 710 711 /* We do ioctl like this rather than via safe_syscall3 to preserve the 712 * "third argument might be integer or pointer or not present" behaviour of 713 * the libc function. 714 */ 715 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 716 /* Similarly for fcntl. Note that callers must always: 717 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 718 * use the flock64 struct rather than unsuffixed flock 719 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 720 */ 721 #ifdef __NR_fcntl64 722 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 723 #else 724 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 725 #endif 726 727 static inline int host_to_target_sock_type(int host_type) 728 { 729 int target_type; 730 731 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 732 case SOCK_DGRAM: 733 target_type = TARGET_SOCK_DGRAM; 734 break; 735 case SOCK_STREAM: 736 target_type = TARGET_SOCK_STREAM; 737 break; 738 default: 739 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 740 break; 741 } 742 743 #if defined(SOCK_CLOEXEC) 744 if (host_type & SOCK_CLOEXEC) { 745 target_type |= TARGET_SOCK_CLOEXEC; 746 } 747 #endif 748 749 #if defined(SOCK_NONBLOCK) 750 if (host_type & SOCK_NONBLOCK) { 751 target_type |= TARGET_SOCK_NONBLOCK; 752 } 753 #endif 754 755 return target_type; 756 } 757 758 static abi_ulong target_brk; 759 static abi_ulong target_original_brk; 760 static abi_ulong brk_page; 761 762 void target_set_brk(abi_ulong new_brk) 763 { 764 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 765 brk_page = HOST_PAGE_ALIGN(target_brk); 766 } 767 768 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 769 #define DEBUGF_BRK(message, args...) 770 771 /* do_brk() must return target values and target errnos. */ 772 abi_long do_brk(abi_ulong new_brk) 773 { 774 abi_long mapped_addr; 775 abi_ulong new_alloc_size; 776 777 /* brk pointers are always untagged */ 778 779 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 780 781 if (!new_brk) { 782 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 783 return target_brk; 784 } 785 if (new_brk < target_original_brk) { 786 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 787 target_brk); 788 return target_brk; 789 } 790 791 /* If the new brk is less than the highest page reserved to the 792 * target heap allocation, set it and we're almost done... */ 793 if (new_brk <= brk_page) { 794 /* Heap contents are initialized to zero, as for anonymous 795 * mapped pages. */ 796 if (new_brk > target_brk) { 797 memset(g2h_untagged(target_brk), 0, new_brk - target_brk); 798 } 799 target_brk = new_brk; 800 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 801 return target_brk; 802 } 803 804 /* We need to allocate more memory after the brk... Note that 805 * we don't use MAP_FIXED because that will map over the top of 806 * any existing mapping (like the one with the host libc or qemu 807 * itself); instead we treat "mapped but at wrong address" as 808 * a failure and unmap again. 809 */ 810 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 811 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 812 PROT_READ|PROT_WRITE, 813 MAP_ANON|MAP_PRIVATE, 0, 0)); 814 815 if (mapped_addr == brk_page) { 816 /* Heap contents are initialized to zero, as for anonymous 817 * mapped pages. Technically the new pages are already 818 * initialized to zero since they *are* anonymous mapped 819 * pages, however we have to take care with the contents that 820 * come from the remaining part of the previous page: it may 821 * contains garbage data due to a previous heap usage (grown 822 * then shrunken). */ 823 memset(g2h_untagged(target_brk), 0, brk_page - target_brk); 824 825 target_brk = new_brk; 826 brk_page = HOST_PAGE_ALIGN(target_brk); 827 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 828 target_brk); 829 return target_brk; 830 } else if (mapped_addr != -1) { 831 /* Mapped but at wrong address, meaning there wasn't actually 832 * enough space for this brk. 833 */ 834 target_munmap(mapped_addr, new_alloc_size); 835 mapped_addr = -1; 836 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 837 } 838 else { 839 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 840 } 841 842 #if defined(TARGET_ALPHA) 843 /* We (partially) emulate OSF/1 on Alpha, which requires we 844 return a proper errno, not an unchanged brk value. */ 845 return -TARGET_ENOMEM; 846 #endif 847 /* For everything else, return the previous break. */ 848 return target_brk; 849 } 850 851 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 852 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 853 static inline abi_long copy_from_user_fdset(fd_set *fds, 854 abi_ulong target_fds_addr, 855 int n) 856 { 857 int i, nw, j, k; 858 abi_ulong b, *target_fds; 859 860 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 861 if (!(target_fds = lock_user(VERIFY_READ, 862 target_fds_addr, 863 sizeof(abi_ulong) * nw, 864 1))) 865 return -TARGET_EFAULT; 866 867 FD_ZERO(fds); 868 k = 0; 869 for (i = 0; i < nw; i++) { 870 /* grab the abi_ulong */ 871 __get_user(b, &target_fds[i]); 872 for (j = 0; j < TARGET_ABI_BITS; j++) { 873 /* check the bit inside the abi_ulong */ 874 if ((b >> j) & 1) 875 FD_SET(k, fds); 876 k++; 877 } 878 } 879 880 unlock_user(target_fds, target_fds_addr, 0); 881 882 return 0; 883 } 884 885 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 886 abi_ulong target_fds_addr, 887 int n) 888 { 889 if (target_fds_addr) { 890 if (copy_from_user_fdset(fds, target_fds_addr, n)) 891 return -TARGET_EFAULT; 892 *fds_ptr = fds; 893 } else { 894 *fds_ptr = NULL; 895 } 896 return 0; 897 } 898 899 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 900 const fd_set *fds, 901 int n) 902 { 903 int i, nw, j, k; 904 abi_long v; 905 abi_ulong *target_fds; 906 907 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 908 if (!(target_fds = lock_user(VERIFY_WRITE, 909 target_fds_addr, 910 sizeof(abi_ulong) * nw, 911 0))) 912 return -TARGET_EFAULT; 913 914 k = 0; 915 for (i = 0; i < nw; i++) { 916 v = 0; 917 for (j = 0; j < TARGET_ABI_BITS; j++) { 918 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 919 k++; 920 } 921 __put_user(v, &target_fds[i]); 922 } 923 924 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 925 926 return 0; 927 } 928 #endif 929 930 #if defined(__alpha__) 931 #define HOST_HZ 1024 932 #else 933 #define HOST_HZ 100 934 #endif 935 936 static inline abi_long host_to_target_clock_t(long ticks) 937 { 938 #if HOST_HZ == TARGET_HZ 939 return ticks; 940 #else 941 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 942 #endif 943 } 944 945 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 946 const struct rusage *rusage) 947 { 948 struct target_rusage *target_rusage; 949 950 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 951 return -TARGET_EFAULT; 952 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 953 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 954 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 955 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 956 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 957 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 958 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 959 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 960 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 961 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 962 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 963 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 964 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 965 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 966 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 967 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 968 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 969 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 970 unlock_user_struct(target_rusage, target_addr, 1); 971 972 return 0; 973 } 974 975 #ifdef TARGET_NR_setrlimit 976 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 977 { 978 abi_ulong target_rlim_swap; 979 rlim_t result; 980 981 target_rlim_swap = tswapal(target_rlim); 982 if (target_rlim_swap == TARGET_RLIM_INFINITY) 983 return RLIM_INFINITY; 984 985 result = target_rlim_swap; 986 if (target_rlim_swap != (rlim_t)result) 987 return RLIM_INFINITY; 988 989 return result; 990 } 991 #endif 992 993 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) 994 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 995 { 996 abi_ulong target_rlim_swap; 997 abi_ulong result; 998 999 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1000 target_rlim_swap = TARGET_RLIM_INFINITY; 1001 else 1002 target_rlim_swap = rlim; 1003 result = tswapal(target_rlim_swap); 1004 1005 return result; 1006 } 1007 #endif 1008 1009 static inline int target_to_host_resource(int code) 1010 { 1011 switch (code) { 1012 case TARGET_RLIMIT_AS: 1013 return RLIMIT_AS; 1014 case TARGET_RLIMIT_CORE: 1015 return RLIMIT_CORE; 1016 case TARGET_RLIMIT_CPU: 1017 return RLIMIT_CPU; 1018 case TARGET_RLIMIT_DATA: 1019 return RLIMIT_DATA; 1020 case TARGET_RLIMIT_FSIZE: 1021 return RLIMIT_FSIZE; 1022 case TARGET_RLIMIT_LOCKS: 1023 return RLIMIT_LOCKS; 1024 case TARGET_RLIMIT_MEMLOCK: 1025 return RLIMIT_MEMLOCK; 1026 case TARGET_RLIMIT_MSGQUEUE: 1027 return RLIMIT_MSGQUEUE; 1028 case TARGET_RLIMIT_NICE: 1029 return RLIMIT_NICE; 1030 case TARGET_RLIMIT_NOFILE: 1031 return RLIMIT_NOFILE; 1032 case TARGET_RLIMIT_NPROC: 1033 return RLIMIT_NPROC; 1034 case TARGET_RLIMIT_RSS: 1035 return RLIMIT_RSS; 1036 case TARGET_RLIMIT_RTPRIO: 1037 return RLIMIT_RTPRIO; 1038 case TARGET_RLIMIT_SIGPENDING: 1039 return RLIMIT_SIGPENDING; 1040 case TARGET_RLIMIT_STACK: 1041 return RLIMIT_STACK; 1042 default: 1043 return code; 1044 } 1045 } 1046 1047 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1048 abi_ulong target_tv_addr) 1049 { 1050 struct target_timeval *target_tv; 1051 1052 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1053 return -TARGET_EFAULT; 1054 } 1055 1056 __get_user(tv->tv_sec, &target_tv->tv_sec); 1057 __get_user(tv->tv_usec, &target_tv->tv_usec); 1058 1059 unlock_user_struct(target_tv, target_tv_addr, 0); 1060 1061 return 0; 1062 } 1063 1064 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1065 const struct timeval *tv) 1066 { 1067 struct target_timeval *target_tv; 1068 1069 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1070 return -TARGET_EFAULT; 1071 } 1072 1073 __put_user(tv->tv_sec, &target_tv->tv_sec); 1074 __put_user(tv->tv_usec, &target_tv->tv_usec); 1075 1076 unlock_user_struct(target_tv, target_tv_addr, 1); 1077 1078 return 0; 1079 } 1080 1081 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 1082 static inline abi_long copy_from_user_timeval64(struct timeval *tv, 1083 abi_ulong target_tv_addr) 1084 { 1085 struct target__kernel_sock_timeval *target_tv; 1086 1087 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1088 return -TARGET_EFAULT; 1089 } 1090 1091 __get_user(tv->tv_sec, &target_tv->tv_sec); 1092 __get_user(tv->tv_usec, &target_tv->tv_usec); 1093 1094 unlock_user_struct(target_tv, target_tv_addr, 0); 1095 1096 return 0; 1097 } 1098 #endif 1099 1100 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, 1101 const struct timeval *tv) 1102 { 1103 struct target__kernel_sock_timeval *target_tv; 1104 1105 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1106 return -TARGET_EFAULT; 1107 } 1108 1109 __put_user(tv->tv_sec, &target_tv->tv_sec); 1110 __put_user(tv->tv_usec, &target_tv->tv_usec); 1111 1112 unlock_user_struct(target_tv, target_tv_addr, 1); 1113 1114 return 0; 1115 } 1116 1117 #if defined(TARGET_NR_futex) || \ 1118 defined(TARGET_NR_rt_sigtimedwait) || \ 1119 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ 1120 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ 1121 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ 1122 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \ 1123 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \ 1124 defined(TARGET_NR_timer_settime) || \ 1125 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 1126 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 1127 abi_ulong target_addr) 1128 { 1129 struct target_timespec *target_ts; 1130 1131 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1132 return -TARGET_EFAULT; 1133 } 1134 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1135 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1136 unlock_user_struct(target_ts, target_addr, 0); 1137 return 0; 1138 } 1139 #endif 1140 1141 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \ 1142 defined(TARGET_NR_timer_settime64) || \ 1143 defined(TARGET_NR_mq_timedsend_time64) || \ 1144 defined(TARGET_NR_mq_timedreceive_time64) || \ 1145 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \ 1146 defined(TARGET_NR_clock_nanosleep_time64) || \ 1147 defined(TARGET_NR_rt_sigtimedwait_time64) || \ 1148 defined(TARGET_NR_utimensat) || \ 1149 defined(TARGET_NR_utimensat_time64) || \ 1150 defined(TARGET_NR_semtimedop_time64) || \ 1151 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64) 1152 static inline abi_long target_to_host_timespec64(struct timespec *host_ts, 1153 abi_ulong target_addr) 1154 { 1155 struct target__kernel_timespec *target_ts; 1156 1157 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1158 return -TARGET_EFAULT; 1159 } 1160 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1161 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1162 /* in 32bit mode, this drops the padding */ 1163 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec; 1164 unlock_user_struct(target_ts, target_addr, 0); 1165 return 0; 1166 } 1167 #endif 1168 1169 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 1170 struct timespec *host_ts) 1171 { 1172 struct target_timespec *target_ts; 1173 1174 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1175 return -TARGET_EFAULT; 1176 } 1177 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1178 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1179 unlock_user_struct(target_ts, target_addr, 1); 1180 return 0; 1181 } 1182 1183 static inline abi_long host_to_target_timespec64(abi_ulong target_addr, 1184 struct timespec *host_ts) 1185 { 1186 struct target__kernel_timespec *target_ts; 1187 1188 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1189 return -TARGET_EFAULT; 1190 } 1191 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1192 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1193 unlock_user_struct(target_ts, target_addr, 1); 1194 return 0; 1195 } 1196 1197 #if defined(TARGET_NR_gettimeofday) 1198 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, 1199 struct timezone *tz) 1200 { 1201 struct target_timezone *target_tz; 1202 1203 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) { 1204 return -TARGET_EFAULT; 1205 } 1206 1207 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1208 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1209 1210 unlock_user_struct(target_tz, target_tz_addr, 1); 1211 1212 return 0; 1213 } 1214 #endif 1215 1216 #if defined(TARGET_NR_settimeofday) 1217 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1218 abi_ulong target_tz_addr) 1219 { 1220 struct target_timezone *target_tz; 1221 1222 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1223 return -TARGET_EFAULT; 1224 } 1225 1226 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1227 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1228 1229 unlock_user_struct(target_tz, target_tz_addr, 0); 1230 1231 return 0; 1232 } 1233 #endif 1234 1235 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1236 #include <mqueue.h> 1237 1238 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1239 abi_ulong target_mq_attr_addr) 1240 { 1241 struct target_mq_attr *target_mq_attr; 1242 1243 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1244 target_mq_attr_addr, 1)) 1245 return -TARGET_EFAULT; 1246 1247 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1248 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1249 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1250 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1251 1252 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1253 1254 return 0; 1255 } 1256 1257 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1258 const struct mq_attr *attr) 1259 { 1260 struct target_mq_attr *target_mq_attr; 1261 1262 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1263 target_mq_attr_addr, 0)) 1264 return -TARGET_EFAULT; 1265 1266 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1267 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1268 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1269 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1270 1271 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1272 1273 return 0; 1274 } 1275 #endif 1276 1277 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1278 /* do_select() must return target values and target errnos. */ 1279 static abi_long do_select(int n, 1280 abi_ulong rfd_addr, abi_ulong wfd_addr, 1281 abi_ulong efd_addr, abi_ulong target_tv_addr) 1282 { 1283 fd_set rfds, wfds, efds; 1284 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1285 struct timeval tv; 1286 struct timespec ts, *ts_ptr; 1287 abi_long ret; 1288 1289 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1290 if (ret) { 1291 return ret; 1292 } 1293 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1294 if (ret) { 1295 return ret; 1296 } 1297 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1298 if (ret) { 1299 return ret; 1300 } 1301 1302 if (target_tv_addr) { 1303 if (copy_from_user_timeval(&tv, target_tv_addr)) 1304 return -TARGET_EFAULT; 1305 ts.tv_sec = tv.tv_sec; 1306 ts.tv_nsec = tv.tv_usec * 1000; 1307 ts_ptr = &ts; 1308 } else { 1309 ts_ptr = NULL; 1310 } 1311 1312 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1313 ts_ptr, NULL)); 1314 1315 if (!is_error(ret)) { 1316 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1317 return -TARGET_EFAULT; 1318 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1319 return -TARGET_EFAULT; 1320 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1321 return -TARGET_EFAULT; 1322 1323 if (target_tv_addr) { 1324 tv.tv_sec = ts.tv_sec; 1325 tv.tv_usec = ts.tv_nsec / 1000; 1326 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1327 return -TARGET_EFAULT; 1328 } 1329 } 1330 } 1331 1332 return ret; 1333 } 1334 1335 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1336 static abi_long do_old_select(abi_ulong arg1) 1337 { 1338 struct target_sel_arg_struct *sel; 1339 abi_ulong inp, outp, exp, tvp; 1340 long nsel; 1341 1342 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1343 return -TARGET_EFAULT; 1344 } 1345 1346 nsel = tswapal(sel->n); 1347 inp = tswapal(sel->inp); 1348 outp = tswapal(sel->outp); 1349 exp = tswapal(sel->exp); 1350 tvp = tswapal(sel->tvp); 1351 1352 unlock_user_struct(sel, arg1, 0); 1353 1354 return do_select(nsel, inp, outp, exp, tvp); 1355 } 1356 #endif 1357 #endif 1358 1359 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 1360 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3, 1361 abi_long arg4, abi_long arg5, abi_long arg6, 1362 bool time64) 1363 { 1364 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 1365 fd_set rfds, wfds, efds; 1366 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1367 struct timespec ts, *ts_ptr; 1368 abi_long ret; 1369 1370 /* 1371 * The 6th arg is actually two args smashed together, 1372 * so we cannot use the C library. 1373 */ 1374 sigset_t set; 1375 struct { 1376 sigset_t *set; 1377 size_t size; 1378 } sig, *sig_ptr; 1379 1380 abi_ulong arg_sigset, arg_sigsize, *arg7; 1381 target_sigset_t *target_sigset; 1382 1383 n = arg1; 1384 rfd_addr = arg2; 1385 wfd_addr = arg3; 1386 efd_addr = arg4; 1387 ts_addr = arg5; 1388 1389 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1390 if (ret) { 1391 return ret; 1392 } 1393 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1394 if (ret) { 1395 return ret; 1396 } 1397 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1398 if (ret) { 1399 return ret; 1400 } 1401 1402 /* 1403 * This takes a timespec, and not a timeval, so we cannot 1404 * use the do_select() helper ... 1405 */ 1406 if (ts_addr) { 1407 if (time64) { 1408 if (target_to_host_timespec64(&ts, ts_addr)) { 1409 return -TARGET_EFAULT; 1410 } 1411 } else { 1412 if (target_to_host_timespec(&ts, ts_addr)) { 1413 return -TARGET_EFAULT; 1414 } 1415 } 1416 ts_ptr = &ts; 1417 } else { 1418 ts_ptr = NULL; 1419 } 1420 1421 /* Extract the two packed args for the sigset */ 1422 if (arg6) { 1423 sig_ptr = &sig; 1424 sig.size = SIGSET_T_SIZE; 1425 1426 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 1427 if (!arg7) { 1428 return -TARGET_EFAULT; 1429 } 1430 arg_sigset = tswapal(arg7[0]); 1431 arg_sigsize = tswapal(arg7[1]); 1432 unlock_user(arg7, arg6, 0); 1433 1434 if (arg_sigset) { 1435 sig.set = &set; 1436 if (arg_sigsize != sizeof(*target_sigset)) { 1437 /* Like the kernel, we enforce correct size sigsets */ 1438 return -TARGET_EINVAL; 1439 } 1440 target_sigset = lock_user(VERIFY_READ, arg_sigset, 1441 sizeof(*target_sigset), 1); 1442 if (!target_sigset) { 1443 return -TARGET_EFAULT; 1444 } 1445 target_to_host_sigset(&set, target_sigset); 1446 unlock_user(target_sigset, arg_sigset, 0); 1447 } else { 1448 sig.set = NULL; 1449 } 1450 } else { 1451 sig_ptr = NULL; 1452 } 1453 1454 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1455 ts_ptr, sig_ptr)); 1456 1457 if (!is_error(ret)) { 1458 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) { 1459 return -TARGET_EFAULT; 1460 } 1461 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) { 1462 return -TARGET_EFAULT; 1463 } 1464 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) { 1465 return -TARGET_EFAULT; 1466 } 1467 if (time64) { 1468 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) { 1469 return -TARGET_EFAULT; 1470 } 1471 } else { 1472 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) { 1473 return -TARGET_EFAULT; 1474 } 1475 } 1476 } 1477 return ret; 1478 } 1479 #endif 1480 1481 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \ 1482 defined(TARGET_NR_ppoll_time64) 1483 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3, 1484 abi_long arg4, abi_long arg5, bool ppoll, bool time64) 1485 { 1486 struct target_pollfd *target_pfd; 1487 unsigned int nfds = arg2; 1488 struct pollfd *pfd; 1489 unsigned int i; 1490 abi_long ret; 1491 1492 pfd = NULL; 1493 target_pfd = NULL; 1494 if (nfds) { 1495 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 1496 return -TARGET_EINVAL; 1497 } 1498 target_pfd = lock_user(VERIFY_WRITE, arg1, 1499 sizeof(struct target_pollfd) * nfds, 1); 1500 if (!target_pfd) { 1501 return -TARGET_EFAULT; 1502 } 1503 1504 pfd = alloca(sizeof(struct pollfd) * nfds); 1505 for (i = 0; i < nfds; i++) { 1506 pfd[i].fd = tswap32(target_pfd[i].fd); 1507 pfd[i].events = tswap16(target_pfd[i].events); 1508 } 1509 } 1510 if (ppoll) { 1511 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 1512 target_sigset_t *target_set; 1513 sigset_t _set, *set = &_set; 1514 1515 if (arg3) { 1516 if (time64) { 1517 if (target_to_host_timespec64(timeout_ts, arg3)) { 1518 unlock_user(target_pfd, arg1, 0); 1519 return -TARGET_EFAULT; 1520 } 1521 } else { 1522 if (target_to_host_timespec(timeout_ts, arg3)) { 1523 unlock_user(target_pfd, arg1, 0); 1524 return -TARGET_EFAULT; 1525 } 1526 } 1527 } else { 1528 timeout_ts = NULL; 1529 } 1530 1531 if (arg4) { 1532 if (arg5 != sizeof(target_sigset_t)) { 1533 unlock_user(target_pfd, arg1, 0); 1534 return -TARGET_EINVAL; 1535 } 1536 1537 target_set = lock_user(VERIFY_READ, arg4, 1538 sizeof(target_sigset_t), 1); 1539 if (!target_set) { 1540 unlock_user(target_pfd, arg1, 0); 1541 return -TARGET_EFAULT; 1542 } 1543 target_to_host_sigset(set, target_set); 1544 } else { 1545 set = NULL; 1546 } 1547 1548 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 1549 set, SIGSET_T_SIZE)); 1550 1551 if (!is_error(ret) && arg3) { 1552 if (time64) { 1553 if (host_to_target_timespec64(arg3, timeout_ts)) { 1554 return -TARGET_EFAULT; 1555 } 1556 } else { 1557 if (host_to_target_timespec(arg3, timeout_ts)) { 1558 return -TARGET_EFAULT; 1559 } 1560 } 1561 } 1562 if (arg4) { 1563 unlock_user(target_set, arg4, 0); 1564 } 1565 } else { 1566 struct timespec ts, *pts; 1567 1568 if (arg3 >= 0) { 1569 /* Convert ms to secs, ns */ 1570 ts.tv_sec = arg3 / 1000; 1571 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 1572 pts = &ts; 1573 } else { 1574 /* -ve poll() timeout means "infinite" */ 1575 pts = NULL; 1576 } 1577 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 1578 } 1579 1580 if (!is_error(ret)) { 1581 for (i = 0; i < nfds; i++) { 1582 target_pfd[i].revents = tswap16(pfd[i].revents); 1583 } 1584 } 1585 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 1586 return ret; 1587 } 1588 #endif 1589 1590 static abi_long do_pipe2(int host_pipe[], int flags) 1591 { 1592 #ifdef CONFIG_PIPE2 1593 return pipe2(host_pipe, flags); 1594 #else 1595 return -ENOSYS; 1596 #endif 1597 } 1598 1599 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, 1600 int flags, int is_pipe2) 1601 { 1602 int host_pipe[2]; 1603 abi_long ret; 1604 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe); 1605 1606 if (is_error(ret)) 1607 return get_errno(ret); 1608 1609 /* Several targets have special calling conventions for the original 1610 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1611 if (!is_pipe2) { 1612 #if defined(TARGET_ALPHA) 1613 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; 1614 return host_pipe[0]; 1615 #elif defined(TARGET_MIPS) 1616 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; 1617 return host_pipe[0]; 1618 #elif defined(TARGET_SH4) 1619 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; 1620 return host_pipe[0]; 1621 #elif defined(TARGET_SPARC) 1622 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1]; 1623 return host_pipe[0]; 1624 #endif 1625 } 1626 1627 if (put_user_s32(host_pipe[0], pipedes) 1628 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) 1629 return -TARGET_EFAULT; 1630 return get_errno(ret); 1631 } 1632 1633 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1634 abi_ulong target_addr, 1635 socklen_t len) 1636 { 1637 struct target_ip_mreqn *target_smreqn; 1638 1639 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1640 if (!target_smreqn) 1641 return -TARGET_EFAULT; 1642 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1643 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1644 if (len == sizeof(struct target_ip_mreqn)) 1645 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1646 unlock_user(target_smreqn, target_addr, 0); 1647 1648 return 0; 1649 } 1650 1651 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1652 abi_ulong target_addr, 1653 socklen_t len) 1654 { 1655 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1656 sa_family_t sa_family; 1657 struct target_sockaddr *target_saddr; 1658 1659 if (fd_trans_target_to_host_addr(fd)) { 1660 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1661 } 1662 1663 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1664 if (!target_saddr) 1665 return -TARGET_EFAULT; 1666 1667 sa_family = tswap16(target_saddr->sa_family); 1668 1669 /* Oops. The caller might send a incomplete sun_path; sun_path 1670 * must be terminated by \0 (see the manual page), but 1671 * unfortunately it is quite common to specify sockaddr_un 1672 * length as "strlen(x->sun_path)" while it should be 1673 * "strlen(...) + 1". We'll fix that here if needed. 1674 * Linux kernel has a similar feature. 1675 */ 1676 1677 if (sa_family == AF_UNIX) { 1678 if (len < unix_maxlen && len > 0) { 1679 char *cp = (char*)target_saddr; 1680 1681 if ( cp[len-1] && !cp[len] ) 1682 len++; 1683 } 1684 if (len > unix_maxlen) 1685 len = unix_maxlen; 1686 } 1687 1688 memcpy(addr, target_saddr, len); 1689 addr->sa_family = sa_family; 1690 if (sa_family == AF_NETLINK) { 1691 struct sockaddr_nl *nladdr; 1692 1693 nladdr = (struct sockaddr_nl *)addr; 1694 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1695 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1696 } else if (sa_family == AF_PACKET) { 1697 struct target_sockaddr_ll *lladdr; 1698 1699 lladdr = (struct target_sockaddr_ll *)addr; 1700 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1701 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1702 } 1703 unlock_user(target_saddr, target_addr, 0); 1704 1705 return 0; 1706 } 1707 1708 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1709 struct sockaddr *addr, 1710 socklen_t len) 1711 { 1712 struct target_sockaddr *target_saddr; 1713 1714 if (len == 0) { 1715 return 0; 1716 } 1717 assert(addr); 1718 1719 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1720 if (!target_saddr) 1721 return -TARGET_EFAULT; 1722 memcpy(target_saddr, addr, len); 1723 if (len >= offsetof(struct target_sockaddr, sa_family) + 1724 sizeof(target_saddr->sa_family)) { 1725 target_saddr->sa_family = tswap16(addr->sa_family); 1726 } 1727 if (addr->sa_family == AF_NETLINK && 1728 len >= sizeof(struct target_sockaddr_nl)) { 1729 struct target_sockaddr_nl *target_nl = 1730 (struct target_sockaddr_nl *)target_saddr; 1731 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1732 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1733 } else if (addr->sa_family == AF_PACKET) { 1734 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1735 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1736 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1737 } else if (addr->sa_family == AF_INET6 && 1738 len >= sizeof(struct target_sockaddr_in6)) { 1739 struct target_sockaddr_in6 *target_in6 = 1740 (struct target_sockaddr_in6 *)target_saddr; 1741 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1742 } 1743 unlock_user(target_saddr, target_addr, len); 1744 1745 return 0; 1746 } 1747 1748 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1749 struct target_msghdr *target_msgh) 1750 { 1751 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1752 abi_long msg_controllen; 1753 abi_ulong target_cmsg_addr; 1754 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1755 socklen_t space = 0; 1756 1757 msg_controllen = tswapal(target_msgh->msg_controllen); 1758 if (msg_controllen < sizeof (struct target_cmsghdr)) 1759 goto the_end; 1760 target_cmsg_addr = tswapal(target_msgh->msg_control); 1761 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1762 target_cmsg_start = target_cmsg; 1763 if (!target_cmsg) 1764 return -TARGET_EFAULT; 1765 1766 while (cmsg && target_cmsg) { 1767 void *data = CMSG_DATA(cmsg); 1768 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1769 1770 int len = tswapal(target_cmsg->cmsg_len) 1771 - sizeof(struct target_cmsghdr); 1772 1773 space += CMSG_SPACE(len); 1774 if (space > msgh->msg_controllen) { 1775 space -= CMSG_SPACE(len); 1776 /* This is a QEMU bug, since we allocated the payload 1777 * area ourselves (unlike overflow in host-to-target 1778 * conversion, which is just the guest giving us a buffer 1779 * that's too small). It can't happen for the payload types 1780 * we currently support; if it becomes an issue in future 1781 * we would need to improve our allocation strategy to 1782 * something more intelligent than "twice the size of the 1783 * target buffer we're reading from". 1784 */ 1785 qemu_log_mask(LOG_UNIMP, 1786 ("Unsupported ancillary data %d/%d: " 1787 "unhandled msg size\n"), 1788 tswap32(target_cmsg->cmsg_level), 1789 tswap32(target_cmsg->cmsg_type)); 1790 break; 1791 } 1792 1793 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1794 cmsg->cmsg_level = SOL_SOCKET; 1795 } else { 1796 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1797 } 1798 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1799 cmsg->cmsg_len = CMSG_LEN(len); 1800 1801 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1802 int *fd = (int *)data; 1803 int *target_fd = (int *)target_data; 1804 int i, numfds = len / sizeof(int); 1805 1806 for (i = 0; i < numfds; i++) { 1807 __get_user(fd[i], target_fd + i); 1808 } 1809 } else if (cmsg->cmsg_level == SOL_SOCKET 1810 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1811 struct ucred *cred = (struct ucred *)data; 1812 struct target_ucred *target_cred = 1813 (struct target_ucred *)target_data; 1814 1815 __get_user(cred->pid, &target_cred->pid); 1816 __get_user(cred->uid, &target_cred->uid); 1817 __get_user(cred->gid, &target_cred->gid); 1818 } else { 1819 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1820 cmsg->cmsg_level, cmsg->cmsg_type); 1821 memcpy(data, target_data, len); 1822 } 1823 1824 cmsg = CMSG_NXTHDR(msgh, cmsg); 1825 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1826 target_cmsg_start); 1827 } 1828 unlock_user(target_cmsg, target_cmsg_addr, 0); 1829 the_end: 1830 msgh->msg_controllen = space; 1831 return 0; 1832 } 1833 1834 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1835 struct msghdr *msgh) 1836 { 1837 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1838 abi_long msg_controllen; 1839 abi_ulong target_cmsg_addr; 1840 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1841 socklen_t space = 0; 1842 1843 msg_controllen = tswapal(target_msgh->msg_controllen); 1844 if (msg_controllen < sizeof (struct target_cmsghdr)) 1845 goto the_end; 1846 target_cmsg_addr = tswapal(target_msgh->msg_control); 1847 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1848 target_cmsg_start = target_cmsg; 1849 if (!target_cmsg) 1850 return -TARGET_EFAULT; 1851 1852 while (cmsg && target_cmsg) { 1853 void *data = CMSG_DATA(cmsg); 1854 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1855 1856 int len = cmsg->cmsg_len - sizeof(struct cmsghdr); 1857 int tgt_len, tgt_space; 1858 1859 /* We never copy a half-header but may copy half-data; 1860 * this is Linux's behaviour in put_cmsg(). Note that 1861 * truncation here is a guest problem (which we report 1862 * to the guest via the CTRUNC bit), unlike truncation 1863 * in target_to_host_cmsg, which is a QEMU bug. 1864 */ 1865 if (msg_controllen < sizeof(struct target_cmsghdr)) { 1866 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1867 break; 1868 } 1869 1870 if (cmsg->cmsg_level == SOL_SOCKET) { 1871 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1872 } else { 1873 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1874 } 1875 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1876 1877 /* Payload types which need a different size of payload on 1878 * the target must adjust tgt_len here. 1879 */ 1880 tgt_len = len; 1881 switch (cmsg->cmsg_level) { 1882 case SOL_SOCKET: 1883 switch (cmsg->cmsg_type) { 1884 case SO_TIMESTAMP: 1885 tgt_len = sizeof(struct target_timeval); 1886 break; 1887 default: 1888 break; 1889 } 1890 break; 1891 default: 1892 break; 1893 } 1894 1895 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) { 1896 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1897 tgt_len = msg_controllen - sizeof(struct target_cmsghdr); 1898 } 1899 1900 /* We must now copy-and-convert len bytes of payload 1901 * into tgt_len bytes of destination space. Bear in mind 1902 * that in both source and destination we may be dealing 1903 * with a truncated value! 1904 */ 1905 switch (cmsg->cmsg_level) { 1906 case SOL_SOCKET: 1907 switch (cmsg->cmsg_type) { 1908 case SCM_RIGHTS: 1909 { 1910 int *fd = (int *)data; 1911 int *target_fd = (int *)target_data; 1912 int i, numfds = tgt_len / sizeof(int); 1913 1914 for (i = 0; i < numfds; i++) { 1915 __put_user(fd[i], target_fd + i); 1916 } 1917 break; 1918 } 1919 case SO_TIMESTAMP: 1920 { 1921 struct timeval *tv = (struct timeval *)data; 1922 struct target_timeval *target_tv = 1923 (struct target_timeval *)target_data; 1924 1925 if (len != sizeof(struct timeval) || 1926 tgt_len != sizeof(struct target_timeval)) { 1927 goto unimplemented; 1928 } 1929 1930 /* copy struct timeval to target */ 1931 __put_user(tv->tv_sec, &target_tv->tv_sec); 1932 __put_user(tv->tv_usec, &target_tv->tv_usec); 1933 break; 1934 } 1935 case SCM_CREDENTIALS: 1936 { 1937 struct ucred *cred = (struct ucred *)data; 1938 struct target_ucred *target_cred = 1939 (struct target_ucred *)target_data; 1940 1941 __put_user(cred->pid, &target_cred->pid); 1942 __put_user(cred->uid, &target_cred->uid); 1943 __put_user(cred->gid, &target_cred->gid); 1944 break; 1945 } 1946 default: 1947 goto unimplemented; 1948 } 1949 break; 1950 1951 case SOL_IP: 1952 switch (cmsg->cmsg_type) { 1953 case IP_TTL: 1954 { 1955 uint32_t *v = (uint32_t *)data; 1956 uint32_t *t_int = (uint32_t *)target_data; 1957 1958 if (len != sizeof(uint32_t) || 1959 tgt_len != sizeof(uint32_t)) { 1960 goto unimplemented; 1961 } 1962 __put_user(*v, t_int); 1963 break; 1964 } 1965 case IP_RECVERR: 1966 { 1967 struct errhdr_t { 1968 struct sock_extended_err ee; 1969 struct sockaddr_in offender; 1970 }; 1971 struct errhdr_t *errh = (struct errhdr_t *)data; 1972 struct errhdr_t *target_errh = 1973 (struct errhdr_t *)target_data; 1974 1975 if (len != sizeof(struct errhdr_t) || 1976 tgt_len != sizeof(struct errhdr_t)) { 1977 goto unimplemented; 1978 } 1979 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 1980 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 1981 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 1982 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 1983 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 1984 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 1985 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 1986 host_to_target_sockaddr((unsigned long) &target_errh->offender, 1987 (void *) &errh->offender, sizeof(errh->offender)); 1988 break; 1989 } 1990 default: 1991 goto unimplemented; 1992 } 1993 break; 1994 1995 case SOL_IPV6: 1996 switch (cmsg->cmsg_type) { 1997 case IPV6_HOPLIMIT: 1998 { 1999 uint32_t *v = (uint32_t *)data; 2000 uint32_t *t_int = (uint32_t *)target_data; 2001 2002 if (len != sizeof(uint32_t) || 2003 tgt_len != sizeof(uint32_t)) { 2004 goto unimplemented; 2005 } 2006 __put_user(*v, t_int); 2007 break; 2008 } 2009 case IPV6_RECVERR: 2010 { 2011 struct errhdr6_t { 2012 struct sock_extended_err ee; 2013 struct sockaddr_in6 offender; 2014 }; 2015 struct errhdr6_t *errh = (struct errhdr6_t *)data; 2016 struct errhdr6_t *target_errh = 2017 (struct errhdr6_t *)target_data; 2018 2019 if (len != sizeof(struct errhdr6_t) || 2020 tgt_len != sizeof(struct errhdr6_t)) { 2021 goto unimplemented; 2022 } 2023 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2024 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2025 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2026 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2027 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2028 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2029 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2030 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2031 (void *) &errh->offender, sizeof(errh->offender)); 2032 break; 2033 } 2034 default: 2035 goto unimplemented; 2036 } 2037 break; 2038 2039 default: 2040 unimplemented: 2041 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 2042 cmsg->cmsg_level, cmsg->cmsg_type); 2043 memcpy(target_data, data, MIN(len, tgt_len)); 2044 if (tgt_len > len) { 2045 memset(target_data + len, 0, tgt_len - len); 2046 } 2047 } 2048 2049 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len)); 2050 tgt_space = TARGET_CMSG_SPACE(tgt_len); 2051 if (msg_controllen < tgt_space) { 2052 tgt_space = msg_controllen; 2053 } 2054 msg_controllen -= tgt_space; 2055 space += tgt_space; 2056 cmsg = CMSG_NXTHDR(msgh, cmsg); 2057 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 2058 target_cmsg_start); 2059 } 2060 unlock_user(target_cmsg, target_cmsg_addr, space); 2061 the_end: 2062 target_msgh->msg_controllen = tswapal(space); 2063 return 0; 2064 } 2065 2066 /* do_setsockopt() Must return target values and target errnos. */ 2067 static abi_long do_setsockopt(int sockfd, int level, int optname, 2068 abi_ulong optval_addr, socklen_t optlen) 2069 { 2070 abi_long ret; 2071 int val; 2072 struct ip_mreqn *ip_mreq; 2073 struct ip_mreq_source *ip_mreq_source; 2074 2075 switch(level) { 2076 case SOL_TCP: 2077 case SOL_UDP: 2078 /* TCP and UDP options all take an 'int' value. */ 2079 if (optlen < sizeof(uint32_t)) 2080 return -TARGET_EINVAL; 2081 2082 if (get_user_u32(val, optval_addr)) 2083 return -TARGET_EFAULT; 2084 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2085 break; 2086 case SOL_IP: 2087 switch(optname) { 2088 case IP_TOS: 2089 case IP_TTL: 2090 case IP_HDRINCL: 2091 case IP_ROUTER_ALERT: 2092 case IP_RECVOPTS: 2093 case IP_RETOPTS: 2094 case IP_PKTINFO: 2095 case IP_MTU_DISCOVER: 2096 case IP_RECVERR: 2097 case IP_RECVTTL: 2098 case IP_RECVTOS: 2099 #ifdef IP_FREEBIND 2100 case IP_FREEBIND: 2101 #endif 2102 case IP_MULTICAST_TTL: 2103 case IP_MULTICAST_LOOP: 2104 val = 0; 2105 if (optlen >= sizeof(uint32_t)) { 2106 if (get_user_u32(val, optval_addr)) 2107 return -TARGET_EFAULT; 2108 } else if (optlen >= 1) { 2109 if (get_user_u8(val, optval_addr)) 2110 return -TARGET_EFAULT; 2111 } 2112 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2113 break; 2114 case IP_ADD_MEMBERSHIP: 2115 case IP_DROP_MEMBERSHIP: 2116 if (optlen < sizeof (struct target_ip_mreq) || 2117 optlen > sizeof (struct target_ip_mreqn)) 2118 return -TARGET_EINVAL; 2119 2120 ip_mreq = (struct ip_mreqn *) alloca(optlen); 2121 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 2122 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 2123 break; 2124 2125 case IP_BLOCK_SOURCE: 2126 case IP_UNBLOCK_SOURCE: 2127 case IP_ADD_SOURCE_MEMBERSHIP: 2128 case IP_DROP_SOURCE_MEMBERSHIP: 2129 if (optlen != sizeof (struct target_ip_mreq_source)) 2130 return -TARGET_EINVAL; 2131 2132 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2133 if (!ip_mreq_source) { 2134 return -TARGET_EFAULT; 2135 } 2136 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 2137 unlock_user (ip_mreq_source, optval_addr, 0); 2138 break; 2139 2140 default: 2141 goto unimplemented; 2142 } 2143 break; 2144 case SOL_IPV6: 2145 switch (optname) { 2146 case IPV6_MTU_DISCOVER: 2147 case IPV6_MTU: 2148 case IPV6_V6ONLY: 2149 case IPV6_RECVPKTINFO: 2150 case IPV6_UNICAST_HOPS: 2151 case IPV6_MULTICAST_HOPS: 2152 case IPV6_MULTICAST_LOOP: 2153 case IPV6_RECVERR: 2154 case IPV6_RECVHOPLIMIT: 2155 case IPV6_2292HOPLIMIT: 2156 case IPV6_CHECKSUM: 2157 case IPV6_ADDRFORM: 2158 case IPV6_2292PKTINFO: 2159 case IPV6_RECVTCLASS: 2160 case IPV6_RECVRTHDR: 2161 case IPV6_2292RTHDR: 2162 case IPV6_RECVHOPOPTS: 2163 case IPV6_2292HOPOPTS: 2164 case IPV6_RECVDSTOPTS: 2165 case IPV6_2292DSTOPTS: 2166 case IPV6_TCLASS: 2167 case IPV6_ADDR_PREFERENCES: 2168 #ifdef IPV6_RECVPATHMTU 2169 case IPV6_RECVPATHMTU: 2170 #endif 2171 #ifdef IPV6_TRANSPARENT 2172 case IPV6_TRANSPARENT: 2173 #endif 2174 #ifdef IPV6_FREEBIND 2175 case IPV6_FREEBIND: 2176 #endif 2177 #ifdef IPV6_RECVORIGDSTADDR 2178 case IPV6_RECVORIGDSTADDR: 2179 #endif 2180 val = 0; 2181 if (optlen < sizeof(uint32_t)) { 2182 return -TARGET_EINVAL; 2183 } 2184 if (get_user_u32(val, optval_addr)) { 2185 return -TARGET_EFAULT; 2186 } 2187 ret = get_errno(setsockopt(sockfd, level, optname, 2188 &val, sizeof(val))); 2189 break; 2190 case IPV6_PKTINFO: 2191 { 2192 struct in6_pktinfo pki; 2193 2194 if (optlen < sizeof(pki)) { 2195 return -TARGET_EINVAL; 2196 } 2197 2198 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2199 return -TARGET_EFAULT; 2200 } 2201 2202 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2203 2204 ret = get_errno(setsockopt(sockfd, level, optname, 2205 &pki, sizeof(pki))); 2206 break; 2207 } 2208 case IPV6_ADD_MEMBERSHIP: 2209 case IPV6_DROP_MEMBERSHIP: 2210 { 2211 struct ipv6_mreq ipv6mreq; 2212 2213 if (optlen < sizeof(ipv6mreq)) { 2214 return -TARGET_EINVAL; 2215 } 2216 2217 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { 2218 return -TARGET_EFAULT; 2219 } 2220 2221 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface); 2222 2223 ret = get_errno(setsockopt(sockfd, level, optname, 2224 &ipv6mreq, sizeof(ipv6mreq))); 2225 break; 2226 } 2227 default: 2228 goto unimplemented; 2229 } 2230 break; 2231 case SOL_ICMPV6: 2232 switch (optname) { 2233 case ICMPV6_FILTER: 2234 { 2235 struct icmp6_filter icmp6f; 2236 2237 if (optlen > sizeof(icmp6f)) { 2238 optlen = sizeof(icmp6f); 2239 } 2240 2241 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2242 return -TARGET_EFAULT; 2243 } 2244 2245 for (val = 0; val < 8; val++) { 2246 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2247 } 2248 2249 ret = get_errno(setsockopt(sockfd, level, optname, 2250 &icmp6f, optlen)); 2251 break; 2252 } 2253 default: 2254 goto unimplemented; 2255 } 2256 break; 2257 case SOL_RAW: 2258 switch (optname) { 2259 case ICMP_FILTER: 2260 case IPV6_CHECKSUM: 2261 /* those take an u32 value */ 2262 if (optlen < sizeof(uint32_t)) { 2263 return -TARGET_EINVAL; 2264 } 2265 2266 if (get_user_u32(val, optval_addr)) { 2267 return -TARGET_EFAULT; 2268 } 2269 ret = get_errno(setsockopt(sockfd, level, optname, 2270 &val, sizeof(val))); 2271 break; 2272 2273 default: 2274 goto unimplemented; 2275 } 2276 break; 2277 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE) 2278 case SOL_ALG: 2279 switch (optname) { 2280 case ALG_SET_KEY: 2281 { 2282 char *alg_key = g_malloc(optlen); 2283 2284 if (!alg_key) { 2285 return -TARGET_ENOMEM; 2286 } 2287 if (copy_from_user(alg_key, optval_addr, optlen)) { 2288 g_free(alg_key); 2289 return -TARGET_EFAULT; 2290 } 2291 ret = get_errno(setsockopt(sockfd, level, optname, 2292 alg_key, optlen)); 2293 g_free(alg_key); 2294 break; 2295 } 2296 case ALG_SET_AEAD_AUTHSIZE: 2297 { 2298 ret = get_errno(setsockopt(sockfd, level, optname, 2299 NULL, optlen)); 2300 break; 2301 } 2302 default: 2303 goto unimplemented; 2304 } 2305 break; 2306 #endif 2307 case TARGET_SOL_SOCKET: 2308 switch (optname) { 2309 case TARGET_SO_RCVTIMEO: 2310 { 2311 struct timeval tv; 2312 2313 optname = SO_RCVTIMEO; 2314 2315 set_timeout: 2316 if (optlen != sizeof(struct target_timeval)) { 2317 return -TARGET_EINVAL; 2318 } 2319 2320 if (copy_from_user_timeval(&tv, optval_addr)) { 2321 return -TARGET_EFAULT; 2322 } 2323 2324 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2325 &tv, sizeof(tv))); 2326 return ret; 2327 } 2328 case TARGET_SO_SNDTIMEO: 2329 optname = SO_SNDTIMEO; 2330 goto set_timeout; 2331 case TARGET_SO_ATTACH_FILTER: 2332 { 2333 struct target_sock_fprog *tfprog; 2334 struct target_sock_filter *tfilter; 2335 struct sock_fprog fprog; 2336 struct sock_filter *filter; 2337 int i; 2338 2339 if (optlen != sizeof(*tfprog)) { 2340 return -TARGET_EINVAL; 2341 } 2342 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 2343 return -TARGET_EFAULT; 2344 } 2345 if (!lock_user_struct(VERIFY_READ, tfilter, 2346 tswapal(tfprog->filter), 0)) { 2347 unlock_user_struct(tfprog, optval_addr, 1); 2348 return -TARGET_EFAULT; 2349 } 2350 2351 fprog.len = tswap16(tfprog->len); 2352 filter = g_try_new(struct sock_filter, fprog.len); 2353 if (filter == NULL) { 2354 unlock_user_struct(tfilter, tfprog->filter, 1); 2355 unlock_user_struct(tfprog, optval_addr, 1); 2356 return -TARGET_ENOMEM; 2357 } 2358 for (i = 0; i < fprog.len; i++) { 2359 filter[i].code = tswap16(tfilter[i].code); 2360 filter[i].jt = tfilter[i].jt; 2361 filter[i].jf = tfilter[i].jf; 2362 filter[i].k = tswap32(tfilter[i].k); 2363 } 2364 fprog.filter = filter; 2365 2366 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 2367 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 2368 g_free(filter); 2369 2370 unlock_user_struct(tfilter, tfprog->filter, 1); 2371 unlock_user_struct(tfprog, optval_addr, 1); 2372 return ret; 2373 } 2374 case TARGET_SO_BINDTODEVICE: 2375 { 2376 char *dev_ifname, *addr_ifname; 2377 2378 if (optlen > IFNAMSIZ - 1) { 2379 optlen = IFNAMSIZ - 1; 2380 } 2381 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2382 if (!dev_ifname) { 2383 return -TARGET_EFAULT; 2384 } 2385 optname = SO_BINDTODEVICE; 2386 addr_ifname = alloca(IFNAMSIZ); 2387 memcpy(addr_ifname, dev_ifname, optlen); 2388 addr_ifname[optlen] = 0; 2389 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2390 addr_ifname, optlen)); 2391 unlock_user (dev_ifname, optval_addr, 0); 2392 return ret; 2393 } 2394 case TARGET_SO_LINGER: 2395 { 2396 struct linger lg; 2397 struct target_linger *tlg; 2398 2399 if (optlen != sizeof(struct target_linger)) { 2400 return -TARGET_EINVAL; 2401 } 2402 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) { 2403 return -TARGET_EFAULT; 2404 } 2405 __get_user(lg.l_onoff, &tlg->l_onoff); 2406 __get_user(lg.l_linger, &tlg->l_linger); 2407 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER, 2408 &lg, sizeof(lg))); 2409 unlock_user_struct(tlg, optval_addr, 0); 2410 return ret; 2411 } 2412 /* Options with 'int' argument. */ 2413 case TARGET_SO_DEBUG: 2414 optname = SO_DEBUG; 2415 break; 2416 case TARGET_SO_REUSEADDR: 2417 optname = SO_REUSEADDR; 2418 break; 2419 #ifdef SO_REUSEPORT 2420 case TARGET_SO_REUSEPORT: 2421 optname = SO_REUSEPORT; 2422 break; 2423 #endif 2424 case TARGET_SO_TYPE: 2425 optname = SO_TYPE; 2426 break; 2427 case TARGET_SO_ERROR: 2428 optname = SO_ERROR; 2429 break; 2430 case TARGET_SO_DONTROUTE: 2431 optname = SO_DONTROUTE; 2432 break; 2433 case TARGET_SO_BROADCAST: 2434 optname = SO_BROADCAST; 2435 break; 2436 case TARGET_SO_SNDBUF: 2437 optname = SO_SNDBUF; 2438 break; 2439 case TARGET_SO_SNDBUFFORCE: 2440 optname = SO_SNDBUFFORCE; 2441 break; 2442 case TARGET_SO_RCVBUF: 2443 optname = SO_RCVBUF; 2444 break; 2445 case TARGET_SO_RCVBUFFORCE: 2446 optname = SO_RCVBUFFORCE; 2447 break; 2448 case TARGET_SO_KEEPALIVE: 2449 optname = SO_KEEPALIVE; 2450 break; 2451 case TARGET_SO_OOBINLINE: 2452 optname = SO_OOBINLINE; 2453 break; 2454 case TARGET_SO_NO_CHECK: 2455 optname = SO_NO_CHECK; 2456 break; 2457 case TARGET_SO_PRIORITY: 2458 optname = SO_PRIORITY; 2459 break; 2460 #ifdef SO_BSDCOMPAT 2461 case TARGET_SO_BSDCOMPAT: 2462 optname = SO_BSDCOMPAT; 2463 break; 2464 #endif 2465 case TARGET_SO_PASSCRED: 2466 optname = SO_PASSCRED; 2467 break; 2468 case TARGET_SO_PASSSEC: 2469 optname = SO_PASSSEC; 2470 break; 2471 case TARGET_SO_TIMESTAMP: 2472 optname = SO_TIMESTAMP; 2473 break; 2474 case TARGET_SO_RCVLOWAT: 2475 optname = SO_RCVLOWAT; 2476 break; 2477 default: 2478 goto unimplemented; 2479 } 2480 if (optlen < sizeof(uint32_t)) 2481 return -TARGET_EINVAL; 2482 2483 if (get_user_u32(val, optval_addr)) 2484 return -TARGET_EFAULT; 2485 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 2486 break; 2487 #ifdef SOL_NETLINK 2488 case SOL_NETLINK: 2489 switch (optname) { 2490 case NETLINK_PKTINFO: 2491 case NETLINK_ADD_MEMBERSHIP: 2492 case NETLINK_DROP_MEMBERSHIP: 2493 case NETLINK_BROADCAST_ERROR: 2494 case NETLINK_NO_ENOBUFS: 2495 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2496 case NETLINK_LISTEN_ALL_NSID: 2497 case NETLINK_CAP_ACK: 2498 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2499 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2500 case NETLINK_EXT_ACK: 2501 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2502 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2503 case NETLINK_GET_STRICT_CHK: 2504 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2505 break; 2506 default: 2507 goto unimplemented; 2508 } 2509 val = 0; 2510 if (optlen < sizeof(uint32_t)) { 2511 return -TARGET_EINVAL; 2512 } 2513 if (get_user_u32(val, optval_addr)) { 2514 return -TARGET_EFAULT; 2515 } 2516 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val, 2517 sizeof(val))); 2518 break; 2519 #endif /* SOL_NETLINK */ 2520 default: 2521 unimplemented: 2522 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n", 2523 level, optname); 2524 ret = -TARGET_ENOPROTOOPT; 2525 } 2526 return ret; 2527 } 2528 2529 /* do_getsockopt() Must return target values and target errnos. */ 2530 static abi_long do_getsockopt(int sockfd, int level, int optname, 2531 abi_ulong optval_addr, abi_ulong optlen) 2532 { 2533 abi_long ret; 2534 int len, val; 2535 socklen_t lv; 2536 2537 switch(level) { 2538 case TARGET_SOL_SOCKET: 2539 level = SOL_SOCKET; 2540 switch (optname) { 2541 /* These don't just return a single integer */ 2542 case TARGET_SO_PEERNAME: 2543 goto unimplemented; 2544 case TARGET_SO_RCVTIMEO: { 2545 struct timeval tv; 2546 socklen_t tvlen; 2547 2548 optname = SO_RCVTIMEO; 2549 2550 get_timeout: 2551 if (get_user_u32(len, optlen)) { 2552 return -TARGET_EFAULT; 2553 } 2554 if (len < 0) { 2555 return -TARGET_EINVAL; 2556 } 2557 2558 tvlen = sizeof(tv); 2559 ret = get_errno(getsockopt(sockfd, level, optname, 2560 &tv, &tvlen)); 2561 if (ret < 0) { 2562 return ret; 2563 } 2564 if (len > sizeof(struct target_timeval)) { 2565 len = sizeof(struct target_timeval); 2566 } 2567 if (copy_to_user_timeval(optval_addr, &tv)) { 2568 return -TARGET_EFAULT; 2569 } 2570 if (put_user_u32(len, optlen)) { 2571 return -TARGET_EFAULT; 2572 } 2573 break; 2574 } 2575 case TARGET_SO_SNDTIMEO: 2576 optname = SO_SNDTIMEO; 2577 goto get_timeout; 2578 case TARGET_SO_PEERCRED: { 2579 struct ucred cr; 2580 socklen_t crlen; 2581 struct target_ucred *tcr; 2582 2583 if (get_user_u32(len, optlen)) { 2584 return -TARGET_EFAULT; 2585 } 2586 if (len < 0) { 2587 return -TARGET_EINVAL; 2588 } 2589 2590 crlen = sizeof(cr); 2591 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 2592 &cr, &crlen)); 2593 if (ret < 0) { 2594 return ret; 2595 } 2596 if (len > crlen) { 2597 len = crlen; 2598 } 2599 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 2600 return -TARGET_EFAULT; 2601 } 2602 __put_user(cr.pid, &tcr->pid); 2603 __put_user(cr.uid, &tcr->uid); 2604 __put_user(cr.gid, &tcr->gid); 2605 unlock_user_struct(tcr, optval_addr, 1); 2606 if (put_user_u32(len, optlen)) { 2607 return -TARGET_EFAULT; 2608 } 2609 break; 2610 } 2611 case TARGET_SO_PEERSEC: { 2612 char *name; 2613 2614 if (get_user_u32(len, optlen)) { 2615 return -TARGET_EFAULT; 2616 } 2617 if (len < 0) { 2618 return -TARGET_EINVAL; 2619 } 2620 name = lock_user(VERIFY_WRITE, optval_addr, len, 0); 2621 if (!name) { 2622 return -TARGET_EFAULT; 2623 } 2624 lv = len; 2625 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC, 2626 name, &lv)); 2627 if (put_user_u32(lv, optlen)) { 2628 ret = -TARGET_EFAULT; 2629 } 2630 unlock_user(name, optval_addr, lv); 2631 break; 2632 } 2633 case TARGET_SO_LINGER: 2634 { 2635 struct linger lg; 2636 socklen_t lglen; 2637 struct target_linger *tlg; 2638 2639 if (get_user_u32(len, optlen)) { 2640 return -TARGET_EFAULT; 2641 } 2642 if (len < 0) { 2643 return -TARGET_EINVAL; 2644 } 2645 2646 lglen = sizeof(lg); 2647 ret = get_errno(getsockopt(sockfd, level, SO_LINGER, 2648 &lg, &lglen)); 2649 if (ret < 0) { 2650 return ret; 2651 } 2652 if (len > lglen) { 2653 len = lglen; 2654 } 2655 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) { 2656 return -TARGET_EFAULT; 2657 } 2658 __put_user(lg.l_onoff, &tlg->l_onoff); 2659 __put_user(lg.l_linger, &tlg->l_linger); 2660 unlock_user_struct(tlg, optval_addr, 1); 2661 if (put_user_u32(len, optlen)) { 2662 return -TARGET_EFAULT; 2663 } 2664 break; 2665 } 2666 /* Options with 'int' argument. */ 2667 case TARGET_SO_DEBUG: 2668 optname = SO_DEBUG; 2669 goto int_case; 2670 case TARGET_SO_REUSEADDR: 2671 optname = SO_REUSEADDR; 2672 goto int_case; 2673 #ifdef SO_REUSEPORT 2674 case TARGET_SO_REUSEPORT: 2675 optname = SO_REUSEPORT; 2676 goto int_case; 2677 #endif 2678 case TARGET_SO_TYPE: 2679 optname = SO_TYPE; 2680 goto int_case; 2681 case TARGET_SO_ERROR: 2682 optname = SO_ERROR; 2683 goto int_case; 2684 case TARGET_SO_DONTROUTE: 2685 optname = SO_DONTROUTE; 2686 goto int_case; 2687 case TARGET_SO_BROADCAST: 2688 optname = SO_BROADCAST; 2689 goto int_case; 2690 case TARGET_SO_SNDBUF: 2691 optname = SO_SNDBUF; 2692 goto int_case; 2693 case TARGET_SO_RCVBUF: 2694 optname = SO_RCVBUF; 2695 goto int_case; 2696 case TARGET_SO_KEEPALIVE: 2697 optname = SO_KEEPALIVE; 2698 goto int_case; 2699 case TARGET_SO_OOBINLINE: 2700 optname = SO_OOBINLINE; 2701 goto int_case; 2702 case TARGET_SO_NO_CHECK: 2703 optname = SO_NO_CHECK; 2704 goto int_case; 2705 case TARGET_SO_PRIORITY: 2706 optname = SO_PRIORITY; 2707 goto int_case; 2708 #ifdef SO_BSDCOMPAT 2709 case TARGET_SO_BSDCOMPAT: 2710 optname = SO_BSDCOMPAT; 2711 goto int_case; 2712 #endif 2713 case TARGET_SO_PASSCRED: 2714 optname = SO_PASSCRED; 2715 goto int_case; 2716 case TARGET_SO_TIMESTAMP: 2717 optname = SO_TIMESTAMP; 2718 goto int_case; 2719 case TARGET_SO_RCVLOWAT: 2720 optname = SO_RCVLOWAT; 2721 goto int_case; 2722 case TARGET_SO_ACCEPTCONN: 2723 optname = SO_ACCEPTCONN; 2724 goto int_case; 2725 case TARGET_SO_PROTOCOL: 2726 optname = SO_PROTOCOL; 2727 goto int_case; 2728 case TARGET_SO_DOMAIN: 2729 optname = SO_DOMAIN; 2730 goto int_case; 2731 default: 2732 goto int_case; 2733 } 2734 break; 2735 case SOL_TCP: 2736 case SOL_UDP: 2737 /* TCP and UDP options all take an 'int' value. */ 2738 int_case: 2739 if (get_user_u32(len, optlen)) 2740 return -TARGET_EFAULT; 2741 if (len < 0) 2742 return -TARGET_EINVAL; 2743 lv = sizeof(lv); 2744 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2745 if (ret < 0) 2746 return ret; 2747 if (optname == SO_TYPE) { 2748 val = host_to_target_sock_type(val); 2749 } 2750 if (len > lv) 2751 len = lv; 2752 if (len == 4) { 2753 if (put_user_u32(val, optval_addr)) 2754 return -TARGET_EFAULT; 2755 } else { 2756 if (put_user_u8(val, optval_addr)) 2757 return -TARGET_EFAULT; 2758 } 2759 if (put_user_u32(len, optlen)) 2760 return -TARGET_EFAULT; 2761 break; 2762 case SOL_IP: 2763 switch(optname) { 2764 case IP_TOS: 2765 case IP_TTL: 2766 case IP_HDRINCL: 2767 case IP_ROUTER_ALERT: 2768 case IP_RECVOPTS: 2769 case IP_RETOPTS: 2770 case IP_PKTINFO: 2771 case IP_MTU_DISCOVER: 2772 case IP_RECVERR: 2773 case IP_RECVTOS: 2774 #ifdef IP_FREEBIND 2775 case IP_FREEBIND: 2776 #endif 2777 case IP_MULTICAST_TTL: 2778 case IP_MULTICAST_LOOP: 2779 if (get_user_u32(len, optlen)) 2780 return -TARGET_EFAULT; 2781 if (len < 0) 2782 return -TARGET_EINVAL; 2783 lv = sizeof(lv); 2784 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2785 if (ret < 0) 2786 return ret; 2787 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2788 len = 1; 2789 if (put_user_u32(len, optlen) 2790 || put_user_u8(val, optval_addr)) 2791 return -TARGET_EFAULT; 2792 } else { 2793 if (len > sizeof(int)) 2794 len = sizeof(int); 2795 if (put_user_u32(len, optlen) 2796 || put_user_u32(val, optval_addr)) 2797 return -TARGET_EFAULT; 2798 } 2799 break; 2800 default: 2801 ret = -TARGET_ENOPROTOOPT; 2802 break; 2803 } 2804 break; 2805 case SOL_IPV6: 2806 switch (optname) { 2807 case IPV6_MTU_DISCOVER: 2808 case IPV6_MTU: 2809 case IPV6_V6ONLY: 2810 case IPV6_RECVPKTINFO: 2811 case IPV6_UNICAST_HOPS: 2812 case IPV6_MULTICAST_HOPS: 2813 case IPV6_MULTICAST_LOOP: 2814 case IPV6_RECVERR: 2815 case IPV6_RECVHOPLIMIT: 2816 case IPV6_2292HOPLIMIT: 2817 case IPV6_CHECKSUM: 2818 case IPV6_ADDRFORM: 2819 case IPV6_2292PKTINFO: 2820 case IPV6_RECVTCLASS: 2821 case IPV6_RECVRTHDR: 2822 case IPV6_2292RTHDR: 2823 case IPV6_RECVHOPOPTS: 2824 case IPV6_2292HOPOPTS: 2825 case IPV6_RECVDSTOPTS: 2826 case IPV6_2292DSTOPTS: 2827 case IPV6_TCLASS: 2828 case IPV6_ADDR_PREFERENCES: 2829 #ifdef IPV6_RECVPATHMTU 2830 case IPV6_RECVPATHMTU: 2831 #endif 2832 #ifdef IPV6_TRANSPARENT 2833 case IPV6_TRANSPARENT: 2834 #endif 2835 #ifdef IPV6_FREEBIND 2836 case IPV6_FREEBIND: 2837 #endif 2838 #ifdef IPV6_RECVORIGDSTADDR 2839 case IPV6_RECVORIGDSTADDR: 2840 #endif 2841 if (get_user_u32(len, optlen)) 2842 return -TARGET_EFAULT; 2843 if (len < 0) 2844 return -TARGET_EINVAL; 2845 lv = sizeof(lv); 2846 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2847 if (ret < 0) 2848 return ret; 2849 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2850 len = 1; 2851 if (put_user_u32(len, optlen) 2852 || put_user_u8(val, optval_addr)) 2853 return -TARGET_EFAULT; 2854 } else { 2855 if (len > sizeof(int)) 2856 len = sizeof(int); 2857 if (put_user_u32(len, optlen) 2858 || put_user_u32(val, optval_addr)) 2859 return -TARGET_EFAULT; 2860 } 2861 break; 2862 default: 2863 ret = -TARGET_ENOPROTOOPT; 2864 break; 2865 } 2866 break; 2867 #ifdef SOL_NETLINK 2868 case SOL_NETLINK: 2869 switch (optname) { 2870 case NETLINK_PKTINFO: 2871 case NETLINK_BROADCAST_ERROR: 2872 case NETLINK_NO_ENOBUFS: 2873 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2874 case NETLINK_LISTEN_ALL_NSID: 2875 case NETLINK_CAP_ACK: 2876 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2877 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2878 case NETLINK_EXT_ACK: 2879 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2880 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2881 case NETLINK_GET_STRICT_CHK: 2882 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2883 if (get_user_u32(len, optlen)) { 2884 return -TARGET_EFAULT; 2885 } 2886 if (len != sizeof(val)) { 2887 return -TARGET_EINVAL; 2888 } 2889 lv = len; 2890 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2891 if (ret < 0) { 2892 return ret; 2893 } 2894 if (put_user_u32(lv, optlen) 2895 || put_user_u32(val, optval_addr)) { 2896 return -TARGET_EFAULT; 2897 } 2898 break; 2899 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2900 case NETLINK_LIST_MEMBERSHIPS: 2901 { 2902 uint32_t *results; 2903 int i; 2904 if (get_user_u32(len, optlen)) { 2905 return -TARGET_EFAULT; 2906 } 2907 if (len < 0) { 2908 return -TARGET_EINVAL; 2909 } 2910 results = lock_user(VERIFY_WRITE, optval_addr, len, 1); 2911 if (!results && len > 0) { 2912 return -TARGET_EFAULT; 2913 } 2914 lv = len; 2915 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv)); 2916 if (ret < 0) { 2917 unlock_user(results, optval_addr, 0); 2918 return ret; 2919 } 2920 /* swap host endianess to target endianess. */ 2921 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 2922 results[i] = tswap32(results[i]); 2923 } 2924 if (put_user_u32(lv, optlen)) { 2925 return -TARGET_EFAULT; 2926 } 2927 unlock_user(results, optval_addr, 0); 2928 break; 2929 } 2930 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2931 default: 2932 goto unimplemented; 2933 } 2934 break; 2935 #endif /* SOL_NETLINK */ 2936 default: 2937 unimplemented: 2938 qemu_log_mask(LOG_UNIMP, 2939 "getsockopt level=%d optname=%d not yet supported\n", 2940 level, optname); 2941 ret = -TARGET_EOPNOTSUPP; 2942 break; 2943 } 2944 return ret; 2945 } 2946 2947 /* Convert target low/high pair representing file offset into the host 2948 * low/high pair. This function doesn't handle offsets bigger than 64 bits 2949 * as the kernel doesn't handle them either. 2950 */ 2951 static void target_to_host_low_high(abi_ulong tlow, 2952 abi_ulong thigh, 2953 unsigned long *hlow, 2954 unsigned long *hhigh) 2955 { 2956 uint64_t off = tlow | 2957 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) << 2958 TARGET_LONG_BITS / 2; 2959 2960 *hlow = off; 2961 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2; 2962 } 2963 2964 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 2965 abi_ulong count, int copy) 2966 { 2967 struct target_iovec *target_vec; 2968 struct iovec *vec; 2969 abi_ulong total_len, max_len; 2970 int i; 2971 int err = 0; 2972 bool bad_address = false; 2973 2974 if (count == 0) { 2975 errno = 0; 2976 return NULL; 2977 } 2978 if (count > IOV_MAX) { 2979 errno = EINVAL; 2980 return NULL; 2981 } 2982 2983 vec = g_try_new0(struct iovec, count); 2984 if (vec == NULL) { 2985 errno = ENOMEM; 2986 return NULL; 2987 } 2988 2989 target_vec = lock_user(VERIFY_READ, target_addr, 2990 count * sizeof(struct target_iovec), 1); 2991 if (target_vec == NULL) { 2992 err = EFAULT; 2993 goto fail2; 2994 } 2995 2996 /* ??? If host page size > target page size, this will result in a 2997 value larger than what we can actually support. */ 2998 max_len = 0x7fffffff & TARGET_PAGE_MASK; 2999 total_len = 0; 3000 3001 for (i = 0; i < count; i++) { 3002 abi_ulong base = tswapal(target_vec[i].iov_base); 3003 abi_long len = tswapal(target_vec[i].iov_len); 3004 3005 if (len < 0) { 3006 err = EINVAL; 3007 goto fail; 3008 } else if (len == 0) { 3009 /* Zero length pointer is ignored. */ 3010 vec[i].iov_base = 0; 3011 } else { 3012 vec[i].iov_base = lock_user(type, base, len, copy); 3013 /* If the first buffer pointer is bad, this is a fault. But 3014 * subsequent bad buffers will result in a partial write; this 3015 * is realized by filling the vector with null pointers and 3016 * zero lengths. */ 3017 if (!vec[i].iov_base) { 3018 if (i == 0) { 3019 err = EFAULT; 3020 goto fail; 3021 } else { 3022 bad_address = true; 3023 } 3024 } 3025 if (bad_address) { 3026 len = 0; 3027 } 3028 if (len > max_len - total_len) { 3029 len = max_len - total_len; 3030 } 3031 } 3032 vec[i].iov_len = len; 3033 total_len += len; 3034 } 3035 3036 unlock_user(target_vec, target_addr, 0); 3037 return vec; 3038 3039 fail: 3040 while (--i >= 0) { 3041 if (tswapal(target_vec[i].iov_len) > 0) { 3042 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 3043 } 3044 } 3045 unlock_user(target_vec, target_addr, 0); 3046 fail2: 3047 g_free(vec); 3048 errno = err; 3049 return NULL; 3050 } 3051 3052 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 3053 abi_ulong count, int copy) 3054 { 3055 struct target_iovec *target_vec; 3056 int i; 3057 3058 target_vec = lock_user(VERIFY_READ, target_addr, 3059 count * sizeof(struct target_iovec), 1); 3060 if (target_vec) { 3061 for (i = 0; i < count; i++) { 3062 abi_ulong base = tswapal(target_vec[i].iov_base); 3063 abi_long len = tswapal(target_vec[i].iov_len); 3064 if (len < 0) { 3065 break; 3066 } 3067 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 3068 } 3069 unlock_user(target_vec, target_addr, 0); 3070 } 3071 3072 g_free(vec); 3073 } 3074 3075 static inline int target_to_host_sock_type(int *type) 3076 { 3077 int host_type = 0; 3078 int target_type = *type; 3079 3080 switch (target_type & TARGET_SOCK_TYPE_MASK) { 3081 case TARGET_SOCK_DGRAM: 3082 host_type = SOCK_DGRAM; 3083 break; 3084 case TARGET_SOCK_STREAM: 3085 host_type = SOCK_STREAM; 3086 break; 3087 default: 3088 host_type = target_type & TARGET_SOCK_TYPE_MASK; 3089 break; 3090 } 3091 if (target_type & TARGET_SOCK_CLOEXEC) { 3092 #if defined(SOCK_CLOEXEC) 3093 host_type |= SOCK_CLOEXEC; 3094 #else 3095 return -TARGET_EINVAL; 3096 #endif 3097 } 3098 if (target_type & TARGET_SOCK_NONBLOCK) { 3099 #if defined(SOCK_NONBLOCK) 3100 host_type |= SOCK_NONBLOCK; 3101 #elif !defined(O_NONBLOCK) 3102 return -TARGET_EINVAL; 3103 #endif 3104 } 3105 *type = host_type; 3106 return 0; 3107 } 3108 3109 /* Try to emulate socket type flags after socket creation. */ 3110 static int sock_flags_fixup(int fd, int target_type) 3111 { 3112 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 3113 if (target_type & TARGET_SOCK_NONBLOCK) { 3114 int flags = fcntl(fd, F_GETFL); 3115 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 3116 close(fd); 3117 return -TARGET_EINVAL; 3118 } 3119 } 3120 #endif 3121 return fd; 3122 } 3123 3124 /* do_socket() Must return target values and target errnos. */ 3125 static abi_long do_socket(int domain, int type, int protocol) 3126 { 3127 int target_type = type; 3128 int ret; 3129 3130 ret = target_to_host_sock_type(&type); 3131 if (ret) { 3132 return ret; 3133 } 3134 3135 if (domain == PF_NETLINK && !( 3136 #ifdef CONFIG_RTNETLINK 3137 protocol == NETLINK_ROUTE || 3138 #endif 3139 protocol == NETLINK_KOBJECT_UEVENT || 3140 protocol == NETLINK_AUDIT)) { 3141 return -TARGET_EPROTONOSUPPORT; 3142 } 3143 3144 if (domain == AF_PACKET || 3145 (domain == AF_INET && type == SOCK_PACKET)) { 3146 protocol = tswap16(protocol); 3147 } 3148 3149 ret = get_errno(socket(domain, type, protocol)); 3150 if (ret >= 0) { 3151 ret = sock_flags_fixup(ret, target_type); 3152 if (type == SOCK_PACKET) { 3153 /* Manage an obsolete case : 3154 * if socket type is SOCK_PACKET, bind by name 3155 */ 3156 fd_trans_register(ret, &target_packet_trans); 3157 } else if (domain == PF_NETLINK) { 3158 switch (protocol) { 3159 #ifdef CONFIG_RTNETLINK 3160 case NETLINK_ROUTE: 3161 fd_trans_register(ret, &target_netlink_route_trans); 3162 break; 3163 #endif 3164 case NETLINK_KOBJECT_UEVENT: 3165 /* nothing to do: messages are strings */ 3166 break; 3167 case NETLINK_AUDIT: 3168 fd_trans_register(ret, &target_netlink_audit_trans); 3169 break; 3170 default: 3171 g_assert_not_reached(); 3172 } 3173 } 3174 } 3175 return ret; 3176 } 3177 3178 /* do_bind() Must return target values and target errnos. */ 3179 static abi_long do_bind(int sockfd, abi_ulong target_addr, 3180 socklen_t addrlen) 3181 { 3182 void *addr; 3183 abi_long ret; 3184 3185 if ((int)addrlen < 0) { 3186 return -TARGET_EINVAL; 3187 } 3188 3189 addr = alloca(addrlen+1); 3190 3191 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3192 if (ret) 3193 return ret; 3194 3195 return get_errno(bind(sockfd, addr, addrlen)); 3196 } 3197 3198 /* do_connect() Must return target values and target errnos. */ 3199 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3200 socklen_t addrlen) 3201 { 3202 void *addr; 3203 abi_long ret; 3204 3205 if ((int)addrlen < 0) { 3206 return -TARGET_EINVAL; 3207 } 3208 3209 addr = alloca(addrlen+1); 3210 3211 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3212 if (ret) 3213 return ret; 3214 3215 return get_errno(safe_connect(sockfd, addr, addrlen)); 3216 } 3217 3218 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3219 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3220 int flags, int send) 3221 { 3222 abi_long ret, len; 3223 struct msghdr msg; 3224 abi_ulong count; 3225 struct iovec *vec; 3226 abi_ulong target_vec; 3227 3228 if (msgp->msg_name) { 3229 msg.msg_namelen = tswap32(msgp->msg_namelen); 3230 msg.msg_name = alloca(msg.msg_namelen+1); 3231 ret = target_to_host_sockaddr(fd, msg.msg_name, 3232 tswapal(msgp->msg_name), 3233 msg.msg_namelen); 3234 if (ret == -TARGET_EFAULT) { 3235 /* For connected sockets msg_name and msg_namelen must 3236 * be ignored, so returning EFAULT immediately is wrong. 3237 * Instead, pass a bad msg_name to the host kernel, and 3238 * let it decide whether to return EFAULT or not. 3239 */ 3240 msg.msg_name = (void *)-1; 3241 } else if (ret) { 3242 goto out2; 3243 } 3244 } else { 3245 msg.msg_name = NULL; 3246 msg.msg_namelen = 0; 3247 } 3248 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3249 msg.msg_control = alloca(msg.msg_controllen); 3250 memset(msg.msg_control, 0, msg.msg_controllen); 3251 3252 msg.msg_flags = tswap32(msgp->msg_flags); 3253 3254 count = tswapal(msgp->msg_iovlen); 3255 target_vec = tswapal(msgp->msg_iov); 3256 3257 if (count > IOV_MAX) { 3258 /* sendrcvmsg returns a different errno for this condition than 3259 * readv/writev, so we must catch it here before lock_iovec() does. 3260 */ 3261 ret = -TARGET_EMSGSIZE; 3262 goto out2; 3263 } 3264 3265 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3266 target_vec, count, send); 3267 if (vec == NULL) { 3268 ret = -host_to_target_errno(errno); 3269 goto out2; 3270 } 3271 msg.msg_iovlen = count; 3272 msg.msg_iov = vec; 3273 3274 if (send) { 3275 if (fd_trans_target_to_host_data(fd)) { 3276 void *host_msg; 3277 3278 host_msg = g_malloc(msg.msg_iov->iov_len); 3279 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3280 ret = fd_trans_target_to_host_data(fd)(host_msg, 3281 msg.msg_iov->iov_len); 3282 if (ret >= 0) { 3283 msg.msg_iov->iov_base = host_msg; 3284 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3285 } 3286 g_free(host_msg); 3287 } else { 3288 ret = target_to_host_cmsg(&msg, msgp); 3289 if (ret == 0) { 3290 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3291 } 3292 } 3293 } else { 3294 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3295 if (!is_error(ret)) { 3296 len = ret; 3297 if (fd_trans_host_to_target_data(fd)) { 3298 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3299 MIN(msg.msg_iov->iov_len, len)); 3300 } else { 3301 ret = host_to_target_cmsg(msgp, &msg); 3302 } 3303 if (!is_error(ret)) { 3304 msgp->msg_namelen = tswap32(msg.msg_namelen); 3305 msgp->msg_flags = tswap32(msg.msg_flags); 3306 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3307 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3308 msg.msg_name, msg.msg_namelen); 3309 if (ret) { 3310 goto out; 3311 } 3312 } 3313 3314 ret = len; 3315 } 3316 } 3317 } 3318 3319 out: 3320 unlock_iovec(vec, target_vec, count, !send); 3321 out2: 3322 return ret; 3323 } 3324 3325 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3326 int flags, int send) 3327 { 3328 abi_long ret; 3329 struct target_msghdr *msgp; 3330 3331 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3332 msgp, 3333 target_msg, 3334 send ? 1 : 0)) { 3335 return -TARGET_EFAULT; 3336 } 3337 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3338 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3339 return ret; 3340 } 3341 3342 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3343 * so it might not have this *mmsg-specific flag either. 3344 */ 3345 #ifndef MSG_WAITFORONE 3346 #define MSG_WAITFORONE 0x10000 3347 #endif 3348 3349 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3350 unsigned int vlen, unsigned int flags, 3351 int send) 3352 { 3353 struct target_mmsghdr *mmsgp; 3354 abi_long ret = 0; 3355 int i; 3356 3357 if (vlen > UIO_MAXIOV) { 3358 vlen = UIO_MAXIOV; 3359 } 3360 3361 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3362 if (!mmsgp) { 3363 return -TARGET_EFAULT; 3364 } 3365 3366 for (i = 0; i < vlen; i++) { 3367 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3368 if (is_error(ret)) { 3369 break; 3370 } 3371 mmsgp[i].msg_len = tswap32(ret); 3372 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3373 if (flags & MSG_WAITFORONE) { 3374 flags |= MSG_DONTWAIT; 3375 } 3376 } 3377 3378 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3379 3380 /* Return number of datagrams sent if we sent any at all; 3381 * otherwise return the error. 3382 */ 3383 if (i) { 3384 return i; 3385 } 3386 return ret; 3387 } 3388 3389 /* do_accept4() Must return target values and target errnos. */ 3390 static abi_long do_accept4(int fd, abi_ulong target_addr, 3391 abi_ulong target_addrlen_addr, int flags) 3392 { 3393 socklen_t addrlen, ret_addrlen; 3394 void *addr; 3395 abi_long ret; 3396 int host_flags; 3397 3398 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 3399 3400 if (target_addr == 0) { 3401 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3402 } 3403 3404 /* linux returns EFAULT if addrlen pointer is invalid */ 3405 if (get_user_u32(addrlen, target_addrlen_addr)) 3406 return -TARGET_EFAULT; 3407 3408 if ((int)addrlen < 0) { 3409 return -TARGET_EINVAL; 3410 } 3411 3412 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3413 return -TARGET_EFAULT; 3414 } 3415 3416 addr = alloca(addrlen); 3417 3418 ret_addrlen = addrlen; 3419 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags)); 3420 if (!is_error(ret)) { 3421 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3422 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3423 ret = -TARGET_EFAULT; 3424 } 3425 } 3426 return ret; 3427 } 3428 3429 /* do_getpeername() Must return target values and target errnos. */ 3430 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3431 abi_ulong target_addrlen_addr) 3432 { 3433 socklen_t addrlen, ret_addrlen; 3434 void *addr; 3435 abi_long ret; 3436 3437 if (get_user_u32(addrlen, target_addrlen_addr)) 3438 return -TARGET_EFAULT; 3439 3440 if ((int)addrlen < 0) { 3441 return -TARGET_EINVAL; 3442 } 3443 3444 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3445 return -TARGET_EFAULT; 3446 } 3447 3448 addr = alloca(addrlen); 3449 3450 ret_addrlen = addrlen; 3451 ret = get_errno(getpeername(fd, addr, &ret_addrlen)); 3452 if (!is_error(ret)) { 3453 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3454 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3455 ret = -TARGET_EFAULT; 3456 } 3457 } 3458 return ret; 3459 } 3460 3461 /* do_getsockname() Must return target values and target errnos. */ 3462 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3463 abi_ulong target_addrlen_addr) 3464 { 3465 socklen_t addrlen, ret_addrlen; 3466 void *addr; 3467 abi_long ret; 3468 3469 if (get_user_u32(addrlen, target_addrlen_addr)) 3470 return -TARGET_EFAULT; 3471 3472 if ((int)addrlen < 0) { 3473 return -TARGET_EINVAL; 3474 } 3475 3476 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3477 return -TARGET_EFAULT; 3478 } 3479 3480 addr = alloca(addrlen); 3481 3482 ret_addrlen = addrlen; 3483 ret = get_errno(getsockname(fd, addr, &ret_addrlen)); 3484 if (!is_error(ret)) { 3485 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3486 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3487 ret = -TARGET_EFAULT; 3488 } 3489 } 3490 return ret; 3491 } 3492 3493 /* do_socketpair() Must return target values and target errnos. */ 3494 static abi_long do_socketpair(int domain, int type, int protocol, 3495 abi_ulong target_tab_addr) 3496 { 3497 int tab[2]; 3498 abi_long ret; 3499 3500 target_to_host_sock_type(&type); 3501 3502 ret = get_errno(socketpair(domain, type, protocol, tab)); 3503 if (!is_error(ret)) { 3504 if (put_user_s32(tab[0], target_tab_addr) 3505 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3506 ret = -TARGET_EFAULT; 3507 } 3508 return ret; 3509 } 3510 3511 /* do_sendto() Must return target values and target errnos. */ 3512 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3513 abi_ulong target_addr, socklen_t addrlen) 3514 { 3515 void *addr; 3516 void *host_msg; 3517 void *copy_msg = NULL; 3518 abi_long ret; 3519 3520 if ((int)addrlen < 0) { 3521 return -TARGET_EINVAL; 3522 } 3523 3524 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3525 if (!host_msg) 3526 return -TARGET_EFAULT; 3527 if (fd_trans_target_to_host_data(fd)) { 3528 copy_msg = host_msg; 3529 host_msg = g_malloc(len); 3530 memcpy(host_msg, copy_msg, len); 3531 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3532 if (ret < 0) { 3533 goto fail; 3534 } 3535 } 3536 if (target_addr) { 3537 addr = alloca(addrlen+1); 3538 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3539 if (ret) { 3540 goto fail; 3541 } 3542 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3543 } else { 3544 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3545 } 3546 fail: 3547 if (copy_msg) { 3548 g_free(host_msg); 3549 host_msg = copy_msg; 3550 } 3551 unlock_user(host_msg, msg, 0); 3552 return ret; 3553 } 3554 3555 /* do_recvfrom() Must return target values and target errnos. */ 3556 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 3557 abi_ulong target_addr, 3558 abi_ulong target_addrlen) 3559 { 3560 socklen_t addrlen, ret_addrlen; 3561 void *addr; 3562 void *host_msg; 3563 abi_long ret; 3564 3565 if (!msg) { 3566 host_msg = NULL; 3567 } else { 3568 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 3569 if (!host_msg) { 3570 return -TARGET_EFAULT; 3571 } 3572 } 3573 if (target_addr) { 3574 if (get_user_u32(addrlen, target_addrlen)) { 3575 ret = -TARGET_EFAULT; 3576 goto fail; 3577 } 3578 if ((int)addrlen < 0) { 3579 ret = -TARGET_EINVAL; 3580 goto fail; 3581 } 3582 addr = alloca(addrlen); 3583 ret_addrlen = addrlen; 3584 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 3585 addr, &ret_addrlen)); 3586 } else { 3587 addr = NULL; /* To keep compiler quiet. */ 3588 addrlen = 0; /* To keep compiler quiet. */ 3589 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 3590 } 3591 if (!is_error(ret)) { 3592 if (fd_trans_host_to_target_data(fd)) { 3593 abi_long trans; 3594 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len)); 3595 if (is_error(trans)) { 3596 ret = trans; 3597 goto fail; 3598 } 3599 } 3600 if (target_addr) { 3601 host_to_target_sockaddr(target_addr, addr, 3602 MIN(addrlen, ret_addrlen)); 3603 if (put_user_u32(ret_addrlen, target_addrlen)) { 3604 ret = -TARGET_EFAULT; 3605 goto fail; 3606 } 3607 } 3608 unlock_user(host_msg, msg, len); 3609 } else { 3610 fail: 3611 unlock_user(host_msg, msg, 0); 3612 } 3613 return ret; 3614 } 3615 3616 #ifdef TARGET_NR_socketcall 3617 /* do_socketcall() must return target values and target errnos. */ 3618 static abi_long do_socketcall(int num, abi_ulong vptr) 3619 { 3620 static const unsigned nargs[] = { /* number of arguments per operation */ 3621 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 3622 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 3623 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 3624 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 3625 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 3626 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 3627 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 3628 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 3629 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 3630 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 3631 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 3632 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 3633 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 3634 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3635 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3636 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 3637 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 3638 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 3639 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 3640 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 3641 }; 3642 abi_long a[6]; /* max 6 args */ 3643 unsigned i; 3644 3645 /* check the range of the first argument num */ 3646 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 3647 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 3648 return -TARGET_EINVAL; 3649 } 3650 /* ensure we have space for args */ 3651 if (nargs[num] > ARRAY_SIZE(a)) { 3652 return -TARGET_EINVAL; 3653 } 3654 /* collect the arguments in a[] according to nargs[] */ 3655 for (i = 0; i < nargs[num]; ++i) { 3656 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 3657 return -TARGET_EFAULT; 3658 } 3659 } 3660 /* now when we have the args, invoke the appropriate underlying function */ 3661 switch (num) { 3662 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 3663 return do_socket(a[0], a[1], a[2]); 3664 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 3665 return do_bind(a[0], a[1], a[2]); 3666 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 3667 return do_connect(a[0], a[1], a[2]); 3668 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 3669 return get_errno(listen(a[0], a[1])); 3670 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 3671 return do_accept4(a[0], a[1], a[2], 0); 3672 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 3673 return do_getsockname(a[0], a[1], a[2]); 3674 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 3675 return do_getpeername(a[0], a[1], a[2]); 3676 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 3677 return do_socketpair(a[0], a[1], a[2], a[3]); 3678 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 3679 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 3680 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 3681 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 3682 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 3683 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 3684 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 3685 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 3686 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 3687 return get_errno(shutdown(a[0], a[1])); 3688 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3689 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 3690 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3691 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 3692 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 3693 return do_sendrecvmsg(a[0], a[1], a[2], 1); 3694 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 3695 return do_sendrecvmsg(a[0], a[1], a[2], 0); 3696 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 3697 return do_accept4(a[0], a[1], a[2], a[3]); 3698 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 3699 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 3700 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 3701 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 3702 default: 3703 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); 3704 return -TARGET_EINVAL; 3705 } 3706 } 3707 #endif 3708 3709 #define N_SHM_REGIONS 32 3710 3711 static struct shm_region { 3712 abi_ulong start; 3713 abi_ulong size; 3714 bool in_use; 3715 } shm_regions[N_SHM_REGIONS]; 3716 3717 #ifndef TARGET_SEMID64_DS 3718 /* asm-generic version of this struct */ 3719 struct target_semid64_ds 3720 { 3721 struct target_ipc_perm sem_perm; 3722 abi_ulong sem_otime; 3723 #if TARGET_ABI_BITS == 32 3724 abi_ulong __unused1; 3725 #endif 3726 abi_ulong sem_ctime; 3727 #if TARGET_ABI_BITS == 32 3728 abi_ulong __unused2; 3729 #endif 3730 abi_ulong sem_nsems; 3731 abi_ulong __unused3; 3732 abi_ulong __unused4; 3733 }; 3734 #endif 3735 3736 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 3737 abi_ulong target_addr) 3738 { 3739 struct target_ipc_perm *target_ip; 3740 struct target_semid64_ds *target_sd; 3741 3742 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3743 return -TARGET_EFAULT; 3744 target_ip = &(target_sd->sem_perm); 3745 host_ip->__key = tswap32(target_ip->__key); 3746 host_ip->uid = tswap32(target_ip->uid); 3747 host_ip->gid = tswap32(target_ip->gid); 3748 host_ip->cuid = tswap32(target_ip->cuid); 3749 host_ip->cgid = tswap32(target_ip->cgid); 3750 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3751 host_ip->mode = tswap32(target_ip->mode); 3752 #else 3753 host_ip->mode = tswap16(target_ip->mode); 3754 #endif 3755 #if defined(TARGET_PPC) 3756 host_ip->__seq = tswap32(target_ip->__seq); 3757 #else 3758 host_ip->__seq = tswap16(target_ip->__seq); 3759 #endif 3760 unlock_user_struct(target_sd, target_addr, 0); 3761 return 0; 3762 } 3763 3764 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 3765 struct ipc_perm *host_ip) 3766 { 3767 struct target_ipc_perm *target_ip; 3768 struct target_semid64_ds *target_sd; 3769 3770 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3771 return -TARGET_EFAULT; 3772 target_ip = &(target_sd->sem_perm); 3773 target_ip->__key = tswap32(host_ip->__key); 3774 target_ip->uid = tswap32(host_ip->uid); 3775 target_ip->gid = tswap32(host_ip->gid); 3776 target_ip->cuid = tswap32(host_ip->cuid); 3777 target_ip->cgid = tswap32(host_ip->cgid); 3778 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3779 target_ip->mode = tswap32(host_ip->mode); 3780 #else 3781 target_ip->mode = tswap16(host_ip->mode); 3782 #endif 3783 #if defined(TARGET_PPC) 3784 target_ip->__seq = tswap32(host_ip->__seq); 3785 #else 3786 target_ip->__seq = tswap16(host_ip->__seq); 3787 #endif 3788 unlock_user_struct(target_sd, target_addr, 1); 3789 return 0; 3790 } 3791 3792 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 3793 abi_ulong target_addr) 3794 { 3795 struct target_semid64_ds *target_sd; 3796 3797 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3798 return -TARGET_EFAULT; 3799 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 3800 return -TARGET_EFAULT; 3801 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 3802 host_sd->sem_otime = tswapal(target_sd->sem_otime); 3803 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 3804 unlock_user_struct(target_sd, target_addr, 0); 3805 return 0; 3806 } 3807 3808 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 3809 struct semid_ds *host_sd) 3810 { 3811 struct target_semid64_ds *target_sd; 3812 3813 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3814 return -TARGET_EFAULT; 3815 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 3816 return -TARGET_EFAULT; 3817 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 3818 target_sd->sem_otime = tswapal(host_sd->sem_otime); 3819 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 3820 unlock_user_struct(target_sd, target_addr, 1); 3821 return 0; 3822 } 3823 3824 struct target_seminfo { 3825 int semmap; 3826 int semmni; 3827 int semmns; 3828 int semmnu; 3829 int semmsl; 3830 int semopm; 3831 int semume; 3832 int semusz; 3833 int semvmx; 3834 int semaem; 3835 }; 3836 3837 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 3838 struct seminfo *host_seminfo) 3839 { 3840 struct target_seminfo *target_seminfo; 3841 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 3842 return -TARGET_EFAULT; 3843 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 3844 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 3845 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 3846 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 3847 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 3848 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 3849 __put_user(host_seminfo->semume, &target_seminfo->semume); 3850 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 3851 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 3852 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 3853 unlock_user_struct(target_seminfo, target_addr, 1); 3854 return 0; 3855 } 3856 3857 union semun { 3858 int val; 3859 struct semid_ds *buf; 3860 unsigned short *array; 3861 struct seminfo *__buf; 3862 }; 3863 3864 union target_semun { 3865 int val; 3866 abi_ulong buf; 3867 abi_ulong array; 3868 abi_ulong __buf; 3869 }; 3870 3871 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 3872 abi_ulong target_addr) 3873 { 3874 int nsems; 3875 unsigned short *array; 3876 union semun semun; 3877 struct semid_ds semid_ds; 3878 int i, ret; 3879 3880 semun.buf = &semid_ds; 3881 3882 ret = semctl(semid, 0, IPC_STAT, semun); 3883 if (ret == -1) 3884 return get_errno(ret); 3885 3886 nsems = semid_ds.sem_nsems; 3887 3888 *host_array = g_try_new(unsigned short, nsems); 3889 if (!*host_array) { 3890 return -TARGET_ENOMEM; 3891 } 3892 array = lock_user(VERIFY_READ, target_addr, 3893 nsems*sizeof(unsigned short), 1); 3894 if (!array) { 3895 g_free(*host_array); 3896 return -TARGET_EFAULT; 3897 } 3898 3899 for(i=0; i<nsems; i++) { 3900 __get_user((*host_array)[i], &array[i]); 3901 } 3902 unlock_user(array, target_addr, 0); 3903 3904 return 0; 3905 } 3906 3907 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 3908 unsigned short **host_array) 3909 { 3910 int nsems; 3911 unsigned short *array; 3912 union semun semun; 3913 struct semid_ds semid_ds; 3914 int i, ret; 3915 3916 semun.buf = &semid_ds; 3917 3918 ret = semctl(semid, 0, IPC_STAT, semun); 3919 if (ret == -1) 3920 return get_errno(ret); 3921 3922 nsems = semid_ds.sem_nsems; 3923 3924 array = lock_user(VERIFY_WRITE, target_addr, 3925 nsems*sizeof(unsigned short), 0); 3926 if (!array) 3927 return -TARGET_EFAULT; 3928 3929 for(i=0; i<nsems; i++) { 3930 __put_user((*host_array)[i], &array[i]); 3931 } 3932 g_free(*host_array); 3933 unlock_user(array, target_addr, 1); 3934 3935 return 0; 3936 } 3937 3938 static inline abi_long do_semctl(int semid, int semnum, int cmd, 3939 abi_ulong target_arg) 3940 { 3941 union target_semun target_su = { .buf = target_arg }; 3942 union semun arg; 3943 struct semid_ds dsarg; 3944 unsigned short *array = NULL; 3945 struct seminfo seminfo; 3946 abi_long ret = -TARGET_EINVAL; 3947 abi_long err; 3948 cmd &= 0xff; 3949 3950 switch( cmd ) { 3951 case GETVAL: 3952 case SETVAL: 3953 /* In 64 bit cross-endian situations, we will erroneously pick up 3954 * the wrong half of the union for the "val" element. To rectify 3955 * this, the entire 8-byte structure is byteswapped, followed by 3956 * a swap of the 4 byte val field. In other cases, the data is 3957 * already in proper host byte order. */ 3958 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 3959 target_su.buf = tswapal(target_su.buf); 3960 arg.val = tswap32(target_su.val); 3961 } else { 3962 arg.val = target_su.val; 3963 } 3964 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3965 break; 3966 case GETALL: 3967 case SETALL: 3968 err = target_to_host_semarray(semid, &array, target_su.array); 3969 if (err) 3970 return err; 3971 arg.array = array; 3972 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3973 err = host_to_target_semarray(semid, target_su.array, &array); 3974 if (err) 3975 return err; 3976 break; 3977 case IPC_STAT: 3978 case IPC_SET: 3979 case SEM_STAT: 3980 err = target_to_host_semid_ds(&dsarg, target_su.buf); 3981 if (err) 3982 return err; 3983 arg.buf = &dsarg; 3984 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3985 err = host_to_target_semid_ds(target_su.buf, &dsarg); 3986 if (err) 3987 return err; 3988 break; 3989 case IPC_INFO: 3990 case SEM_INFO: 3991 arg.__buf = &seminfo; 3992 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3993 err = host_to_target_seminfo(target_su.__buf, &seminfo); 3994 if (err) 3995 return err; 3996 break; 3997 case IPC_RMID: 3998 case GETPID: 3999 case GETNCNT: 4000 case GETZCNT: 4001 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 4002 break; 4003 } 4004 4005 return ret; 4006 } 4007 4008 struct target_sembuf { 4009 unsigned short sem_num; 4010 short sem_op; 4011 short sem_flg; 4012 }; 4013 4014 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 4015 abi_ulong target_addr, 4016 unsigned nsops) 4017 { 4018 struct target_sembuf *target_sembuf; 4019 int i; 4020 4021 target_sembuf = lock_user(VERIFY_READ, target_addr, 4022 nsops*sizeof(struct target_sembuf), 1); 4023 if (!target_sembuf) 4024 return -TARGET_EFAULT; 4025 4026 for(i=0; i<nsops; i++) { 4027 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 4028 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 4029 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 4030 } 4031 4032 unlock_user(target_sembuf, target_addr, 0); 4033 4034 return 0; 4035 } 4036 4037 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \ 4038 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64) 4039 4040 /* 4041 * This macro is required to handle the s390 variants, which passes the 4042 * arguments in a different order than default. 4043 */ 4044 #ifdef __s390x__ 4045 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4046 (__nsops), (__timeout), (__sops) 4047 #else 4048 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4049 (__nsops), 0, (__sops), (__timeout) 4050 #endif 4051 4052 static inline abi_long do_semtimedop(int semid, 4053 abi_long ptr, 4054 unsigned nsops, 4055 abi_long timeout, bool time64) 4056 { 4057 struct sembuf *sops; 4058 struct timespec ts, *pts = NULL; 4059 abi_long ret; 4060 4061 if (timeout) { 4062 pts = &ts; 4063 if (time64) { 4064 if (target_to_host_timespec64(pts, timeout)) { 4065 return -TARGET_EFAULT; 4066 } 4067 } else { 4068 if (target_to_host_timespec(pts, timeout)) { 4069 return -TARGET_EFAULT; 4070 } 4071 } 4072 } 4073 4074 if (nsops > TARGET_SEMOPM) { 4075 return -TARGET_E2BIG; 4076 } 4077 4078 sops = g_new(struct sembuf, nsops); 4079 4080 if (target_to_host_sembuf(sops, ptr, nsops)) { 4081 g_free(sops); 4082 return -TARGET_EFAULT; 4083 } 4084 4085 ret = -TARGET_ENOSYS; 4086 #ifdef __NR_semtimedop 4087 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts)); 4088 #endif 4089 #ifdef __NR_ipc 4090 if (ret == -TARGET_ENOSYS) { 4091 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, 4092 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts))); 4093 } 4094 #endif 4095 g_free(sops); 4096 return ret; 4097 } 4098 #endif 4099 4100 struct target_msqid_ds 4101 { 4102 struct target_ipc_perm msg_perm; 4103 abi_ulong msg_stime; 4104 #if TARGET_ABI_BITS == 32 4105 abi_ulong __unused1; 4106 #endif 4107 abi_ulong msg_rtime; 4108 #if TARGET_ABI_BITS == 32 4109 abi_ulong __unused2; 4110 #endif 4111 abi_ulong msg_ctime; 4112 #if TARGET_ABI_BITS == 32 4113 abi_ulong __unused3; 4114 #endif 4115 abi_ulong __msg_cbytes; 4116 abi_ulong msg_qnum; 4117 abi_ulong msg_qbytes; 4118 abi_ulong msg_lspid; 4119 abi_ulong msg_lrpid; 4120 abi_ulong __unused4; 4121 abi_ulong __unused5; 4122 }; 4123 4124 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 4125 abi_ulong target_addr) 4126 { 4127 struct target_msqid_ds *target_md; 4128 4129 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 4130 return -TARGET_EFAULT; 4131 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 4132 return -TARGET_EFAULT; 4133 host_md->msg_stime = tswapal(target_md->msg_stime); 4134 host_md->msg_rtime = tswapal(target_md->msg_rtime); 4135 host_md->msg_ctime = tswapal(target_md->msg_ctime); 4136 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 4137 host_md->msg_qnum = tswapal(target_md->msg_qnum); 4138 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 4139 host_md->msg_lspid = tswapal(target_md->msg_lspid); 4140 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 4141 unlock_user_struct(target_md, target_addr, 0); 4142 return 0; 4143 } 4144 4145 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 4146 struct msqid_ds *host_md) 4147 { 4148 struct target_msqid_ds *target_md; 4149 4150 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 4151 return -TARGET_EFAULT; 4152 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 4153 return -TARGET_EFAULT; 4154 target_md->msg_stime = tswapal(host_md->msg_stime); 4155 target_md->msg_rtime = tswapal(host_md->msg_rtime); 4156 target_md->msg_ctime = tswapal(host_md->msg_ctime); 4157 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 4158 target_md->msg_qnum = tswapal(host_md->msg_qnum); 4159 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 4160 target_md->msg_lspid = tswapal(host_md->msg_lspid); 4161 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 4162 unlock_user_struct(target_md, target_addr, 1); 4163 return 0; 4164 } 4165 4166 struct target_msginfo { 4167 int msgpool; 4168 int msgmap; 4169 int msgmax; 4170 int msgmnb; 4171 int msgmni; 4172 int msgssz; 4173 int msgtql; 4174 unsigned short int msgseg; 4175 }; 4176 4177 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 4178 struct msginfo *host_msginfo) 4179 { 4180 struct target_msginfo *target_msginfo; 4181 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 4182 return -TARGET_EFAULT; 4183 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 4184 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 4185 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 4186 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 4187 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 4188 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 4189 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 4190 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 4191 unlock_user_struct(target_msginfo, target_addr, 1); 4192 return 0; 4193 } 4194 4195 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 4196 { 4197 struct msqid_ds dsarg; 4198 struct msginfo msginfo; 4199 abi_long ret = -TARGET_EINVAL; 4200 4201 cmd &= 0xff; 4202 4203 switch (cmd) { 4204 case IPC_STAT: 4205 case IPC_SET: 4206 case MSG_STAT: 4207 if (target_to_host_msqid_ds(&dsarg,ptr)) 4208 return -TARGET_EFAULT; 4209 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4210 if (host_to_target_msqid_ds(ptr,&dsarg)) 4211 return -TARGET_EFAULT; 4212 break; 4213 case IPC_RMID: 4214 ret = get_errno(msgctl(msgid, cmd, NULL)); 4215 break; 4216 case IPC_INFO: 4217 case MSG_INFO: 4218 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4219 if (host_to_target_msginfo(ptr, &msginfo)) 4220 return -TARGET_EFAULT; 4221 break; 4222 } 4223 4224 return ret; 4225 } 4226 4227 struct target_msgbuf { 4228 abi_long mtype; 4229 char mtext[1]; 4230 }; 4231 4232 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4233 ssize_t msgsz, int msgflg) 4234 { 4235 struct target_msgbuf *target_mb; 4236 struct msgbuf *host_mb; 4237 abi_long ret = 0; 4238 4239 if (msgsz < 0) { 4240 return -TARGET_EINVAL; 4241 } 4242 4243 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4244 return -TARGET_EFAULT; 4245 host_mb = g_try_malloc(msgsz + sizeof(long)); 4246 if (!host_mb) { 4247 unlock_user_struct(target_mb, msgp, 0); 4248 return -TARGET_ENOMEM; 4249 } 4250 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4251 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4252 ret = -TARGET_ENOSYS; 4253 #ifdef __NR_msgsnd 4254 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4255 #endif 4256 #ifdef __NR_ipc 4257 if (ret == -TARGET_ENOSYS) { 4258 #ifdef __s390x__ 4259 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4260 host_mb)); 4261 #else 4262 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4263 host_mb, 0)); 4264 #endif 4265 } 4266 #endif 4267 g_free(host_mb); 4268 unlock_user_struct(target_mb, msgp, 0); 4269 4270 return ret; 4271 } 4272 4273 #ifdef __NR_ipc 4274 #if defined(__sparc__) 4275 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */ 4276 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp 4277 #elif defined(__s390x__) 4278 /* The s390 sys_ipc variant has only five parameters. */ 4279 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4280 ((long int[]){(long int)__msgp, __msgtyp}) 4281 #else 4282 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4283 ((long int[]){(long int)__msgp, __msgtyp}), 0 4284 #endif 4285 #endif 4286 4287 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4288 ssize_t msgsz, abi_long msgtyp, 4289 int msgflg) 4290 { 4291 struct target_msgbuf *target_mb; 4292 char *target_mtext; 4293 struct msgbuf *host_mb; 4294 abi_long ret = 0; 4295 4296 if (msgsz < 0) { 4297 return -TARGET_EINVAL; 4298 } 4299 4300 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4301 return -TARGET_EFAULT; 4302 4303 host_mb = g_try_malloc(msgsz + sizeof(long)); 4304 if (!host_mb) { 4305 ret = -TARGET_ENOMEM; 4306 goto end; 4307 } 4308 ret = -TARGET_ENOSYS; 4309 #ifdef __NR_msgrcv 4310 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4311 #endif 4312 #ifdef __NR_ipc 4313 if (ret == -TARGET_ENOSYS) { 4314 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz, 4315 msgflg, MSGRCV_ARGS(host_mb, msgtyp))); 4316 } 4317 #endif 4318 4319 if (ret > 0) { 4320 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4321 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4322 if (!target_mtext) { 4323 ret = -TARGET_EFAULT; 4324 goto end; 4325 } 4326 memcpy(target_mb->mtext, host_mb->mtext, ret); 4327 unlock_user(target_mtext, target_mtext_addr, ret); 4328 } 4329 4330 target_mb->mtype = tswapal(host_mb->mtype); 4331 4332 end: 4333 if (target_mb) 4334 unlock_user_struct(target_mb, msgp, 1); 4335 g_free(host_mb); 4336 return ret; 4337 } 4338 4339 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4340 abi_ulong target_addr) 4341 { 4342 struct target_shmid_ds *target_sd; 4343 4344 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4345 return -TARGET_EFAULT; 4346 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4347 return -TARGET_EFAULT; 4348 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4349 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4350 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4351 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4352 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4353 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4354 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4355 unlock_user_struct(target_sd, target_addr, 0); 4356 return 0; 4357 } 4358 4359 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4360 struct shmid_ds *host_sd) 4361 { 4362 struct target_shmid_ds *target_sd; 4363 4364 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4365 return -TARGET_EFAULT; 4366 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4367 return -TARGET_EFAULT; 4368 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4369 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4370 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4371 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4372 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4373 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4374 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4375 unlock_user_struct(target_sd, target_addr, 1); 4376 return 0; 4377 } 4378 4379 struct target_shminfo { 4380 abi_ulong shmmax; 4381 abi_ulong shmmin; 4382 abi_ulong shmmni; 4383 abi_ulong shmseg; 4384 abi_ulong shmall; 4385 }; 4386 4387 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4388 struct shminfo *host_shminfo) 4389 { 4390 struct target_shminfo *target_shminfo; 4391 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4392 return -TARGET_EFAULT; 4393 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4394 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4395 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4396 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4397 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4398 unlock_user_struct(target_shminfo, target_addr, 1); 4399 return 0; 4400 } 4401 4402 struct target_shm_info { 4403 int used_ids; 4404 abi_ulong shm_tot; 4405 abi_ulong shm_rss; 4406 abi_ulong shm_swp; 4407 abi_ulong swap_attempts; 4408 abi_ulong swap_successes; 4409 }; 4410 4411 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4412 struct shm_info *host_shm_info) 4413 { 4414 struct target_shm_info *target_shm_info; 4415 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4416 return -TARGET_EFAULT; 4417 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4418 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4419 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4420 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4421 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4422 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4423 unlock_user_struct(target_shm_info, target_addr, 1); 4424 return 0; 4425 } 4426 4427 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4428 { 4429 struct shmid_ds dsarg; 4430 struct shminfo shminfo; 4431 struct shm_info shm_info; 4432 abi_long ret = -TARGET_EINVAL; 4433 4434 cmd &= 0xff; 4435 4436 switch(cmd) { 4437 case IPC_STAT: 4438 case IPC_SET: 4439 case SHM_STAT: 4440 if (target_to_host_shmid_ds(&dsarg, buf)) 4441 return -TARGET_EFAULT; 4442 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4443 if (host_to_target_shmid_ds(buf, &dsarg)) 4444 return -TARGET_EFAULT; 4445 break; 4446 case IPC_INFO: 4447 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4448 if (host_to_target_shminfo(buf, &shminfo)) 4449 return -TARGET_EFAULT; 4450 break; 4451 case SHM_INFO: 4452 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4453 if (host_to_target_shm_info(buf, &shm_info)) 4454 return -TARGET_EFAULT; 4455 break; 4456 case IPC_RMID: 4457 case SHM_LOCK: 4458 case SHM_UNLOCK: 4459 ret = get_errno(shmctl(shmid, cmd, NULL)); 4460 break; 4461 } 4462 4463 return ret; 4464 } 4465 4466 #ifndef TARGET_FORCE_SHMLBA 4467 /* For most architectures, SHMLBA is the same as the page size; 4468 * some architectures have larger values, in which case they should 4469 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4470 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4471 * and defining its own value for SHMLBA. 4472 * 4473 * The kernel also permits SHMLBA to be set by the architecture to a 4474 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4475 * this means that addresses are rounded to the large size if 4476 * SHM_RND is set but addresses not aligned to that size are not rejected 4477 * as long as they are at least page-aligned. Since the only architecture 4478 * which uses this is ia64 this code doesn't provide for that oddity. 4479 */ 4480 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4481 { 4482 return TARGET_PAGE_SIZE; 4483 } 4484 #endif 4485 4486 static inline abi_ulong do_shmat(CPUArchState *cpu_env, 4487 int shmid, abi_ulong shmaddr, int shmflg) 4488 { 4489 CPUState *cpu = env_cpu(cpu_env); 4490 abi_long raddr; 4491 void *host_raddr; 4492 struct shmid_ds shm_info; 4493 int i,ret; 4494 abi_ulong shmlba; 4495 4496 /* shmat pointers are always untagged */ 4497 4498 /* find out the length of the shared memory segment */ 4499 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4500 if (is_error(ret)) { 4501 /* can't get length, bail out */ 4502 return ret; 4503 } 4504 4505 shmlba = target_shmlba(cpu_env); 4506 4507 if (shmaddr & (shmlba - 1)) { 4508 if (shmflg & SHM_RND) { 4509 shmaddr &= ~(shmlba - 1); 4510 } else { 4511 return -TARGET_EINVAL; 4512 } 4513 } 4514 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { 4515 return -TARGET_EINVAL; 4516 } 4517 4518 mmap_lock(); 4519 4520 /* 4521 * We're mapping shared memory, so ensure we generate code for parallel 4522 * execution and flush old translations. This will work up to the level 4523 * supported by the host -- anything that requires EXCP_ATOMIC will not 4524 * be atomic with respect to an external process. 4525 */ 4526 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 4527 cpu->tcg_cflags |= CF_PARALLEL; 4528 tb_flush(cpu); 4529 } 4530 4531 if (shmaddr) 4532 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); 4533 else { 4534 abi_ulong mmap_start; 4535 4536 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4537 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4538 4539 if (mmap_start == -1) { 4540 errno = ENOMEM; 4541 host_raddr = (void *)-1; 4542 } else 4543 host_raddr = shmat(shmid, g2h_untagged(mmap_start), 4544 shmflg | SHM_REMAP); 4545 } 4546 4547 if (host_raddr == (void *)-1) { 4548 mmap_unlock(); 4549 return get_errno((long)host_raddr); 4550 } 4551 raddr=h2g((unsigned long)host_raddr); 4552 4553 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4554 PAGE_VALID | PAGE_RESET | PAGE_READ | 4555 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); 4556 4557 for (i = 0; i < N_SHM_REGIONS; i++) { 4558 if (!shm_regions[i].in_use) { 4559 shm_regions[i].in_use = true; 4560 shm_regions[i].start = raddr; 4561 shm_regions[i].size = shm_info.shm_segsz; 4562 break; 4563 } 4564 } 4565 4566 mmap_unlock(); 4567 return raddr; 4568 4569 } 4570 4571 static inline abi_long do_shmdt(abi_ulong shmaddr) 4572 { 4573 int i; 4574 abi_long rv; 4575 4576 /* shmdt pointers are always untagged */ 4577 4578 mmap_lock(); 4579 4580 for (i = 0; i < N_SHM_REGIONS; ++i) { 4581 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4582 shm_regions[i].in_use = false; 4583 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4584 break; 4585 } 4586 } 4587 rv = get_errno(shmdt(g2h_untagged(shmaddr))); 4588 4589 mmap_unlock(); 4590 4591 return rv; 4592 } 4593 4594 #ifdef TARGET_NR_ipc 4595 /* ??? This only works with linear mappings. */ 4596 /* do_ipc() must return target values and target errnos. */ 4597 static abi_long do_ipc(CPUArchState *cpu_env, 4598 unsigned int call, abi_long first, 4599 abi_long second, abi_long third, 4600 abi_long ptr, abi_long fifth) 4601 { 4602 int version; 4603 abi_long ret = 0; 4604 4605 version = call >> 16; 4606 call &= 0xffff; 4607 4608 switch (call) { 4609 case IPCOP_semop: 4610 ret = do_semtimedop(first, ptr, second, 0, false); 4611 break; 4612 case IPCOP_semtimedop: 4613 /* 4614 * The s390 sys_ipc variant has only five parameters instead of six 4615 * (as for default variant) and the only difference is the handling of 4616 * SEMTIMEDOP where on s390 the third parameter is used as a pointer 4617 * to a struct timespec where the generic variant uses fifth parameter. 4618 */ 4619 #if defined(TARGET_S390X) 4620 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64); 4621 #else 4622 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64); 4623 #endif 4624 break; 4625 4626 case IPCOP_semget: 4627 ret = get_errno(semget(first, second, third)); 4628 break; 4629 4630 case IPCOP_semctl: { 4631 /* The semun argument to semctl is passed by value, so dereference the 4632 * ptr argument. */ 4633 abi_ulong atptr; 4634 get_user_ual(atptr, ptr); 4635 ret = do_semctl(first, second, third, atptr); 4636 break; 4637 } 4638 4639 case IPCOP_msgget: 4640 ret = get_errno(msgget(first, second)); 4641 break; 4642 4643 case IPCOP_msgsnd: 4644 ret = do_msgsnd(first, ptr, second, third); 4645 break; 4646 4647 case IPCOP_msgctl: 4648 ret = do_msgctl(first, second, ptr); 4649 break; 4650 4651 case IPCOP_msgrcv: 4652 switch (version) { 4653 case 0: 4654 { 4655 struct target_ipc_kludge { 4656 abi_long msgp; 4657 abi_long msgtyp; 4658 } *tmp; 4659 4660 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4661 ret = -TARGET_EFAULT; 4662 break; 4663 } 4664 4665 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4666 4667 unlock_user_struct(tmp, ptr, 0); 4668 break; 4669 } 4670 default: 4671 ret = do_msgrcv(first, ptr, second, fifth, third); 4672 } 4673 break; 4674 4675 case IPCOP_shmat: 4676 switch (version) { 4677 default: 4678 { 4679 abi_ulong raddr; 4680 raddr = do_shmat(cpu_env, first, ptr, second); 4681 if (is_error(raddr)) 4682 return get_errno(raddr); 4683 if (put_user_ual(raddr, third)) 4684 return -TARGET_EFAULT; 4685 break; 4686 } 4687 case 1: 4688 ret = -TARGET_EINVAL; 4689 break; 4690 } 4691 break; 4692 case IPCOP_shmdt: 4693 ret = do_shmdt(ptr); 4694 break; 4695 4696 case IPCOP_shmget: 4697 /* IPC_* flag values are the same on all linux platforms */ 4698 ret = get_errno(shmget(first, second, third)); 4699 break; 4700 4701 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4702 case IPCOP_shmctl: 4703 ret = do_shmctl(first, second, ptr); 4704 break; 4705 default: 4706 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4707 call, version); 4708 ret = -TARGET_ENOSYS; 4709 break; 4710 } 4711 return ret; 4712 } 4713 #endif 4714 4715 /* kernel structure types definitions */ 4716 4717 #define STRUCT(name, ...) STRUCT_ ## name, 4718 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4719 enum { 4720 #include "syscall_types.h" 4721 STRUCT_MAX 4722 }; 4723 #undef STRUCT 4724 #undef STRUCT_SPECIAL 4725 4726 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4727 #define STRUCT_SPECIAL(name) 4728 #include "syscall_types.h" 4729 #undef STRUCT 4730 #undef STRUCT_SPECIAL 4731 4732 #define MAX_STRUCT_SIZE 4096 4733 4734 #ifdef CONFIG_FIEMAP 4735 /* So fiemap access checks don't overflow on 32 bit systems. 4736 * This is very slightly smaller than the limit imposed by 4737 * the underlying kernel. 4738 */ 4739 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4740 / sizeof(struct fiemap_extent)) 4741 4742 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4743 int fd, int cmd, abi_long arg) 4744 { 4745 /* The parameter for this ioctl is a struct fiemap followed 4746 * by an array of struct fiemap_extent whose size is set 4747 * in fiemap->fm_extent_count. The array is filled in by the 4748 * ioctl. 4749 */ 4750 int target_size_in, target_size_out; 4751 struct fiemap *fm; 4752 const argtype *arg_type = ie->arg_type; 4753 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4754 void *argptr, *p; 4755 abi_long ret; 4756 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4757 uint32_t outbufsz; 4758 int free_fm = 0; 4759 4760 assert(arg_type[0] == TYPE_PTR); 4761 assert(ie->access == IOC_RW); 4762 arg_type++; 4763 target_size_in = thunk_type_size(arg_type, 0); 4764 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4765 if (!argptr) { 4766 return -TARGET_EFAULT; 4767 } 4768 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4769 unlock_user(argptr, arg, 0); 4770 fm = (struct fiemap *)buf_temp; 4771 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4772 return -TARGET_EINVAL; 4773 } 4774 4775 outbufsz = sizeof (*fm) + 4776 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4777 4778 if (outbufsz > MAX_STRUCT_SIZE) { 4779 /* We can't fit all the extents into the fixed size buffer. 4780 * Allocate one that is large enough and use it instead. 4781 */ 4782 fm = g_try_malloc(outbufsz); 4783 if (!fm) { 4784 return -TARGET_ENOMEM; 4785 } 4786 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4787 free_fm = 1; 4788 } 4789 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4790 if (!is_error(ret)) { 4791 target_size_out = target_size_in; 4792 /* An extent_count of 0 means we were only counting the extents 4793 * so there are no structs to copy 4794 */ 4795 if (fm->fm_extent_count != 0) { 4796 target_size_out += fm->fm_mapped_extents * extent_size; 4797 } 4798 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4799 if (!argptr) { 4800 ret = -TARGET_EFAULT; 4801 } else { 4802 /* Convert the struct fiemap */ 4803 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4804 if (fm->fm_extent_count != 0) { 4805 p = argptr + target_size_in; 4806 /* ...and then all the struct fiemap_extents */ 4807 for (i = 0; i < fm->fm_mapped_extents; i++) { 4808 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4809 THUNK_TARGET); 4810 p += extent_size; 4811 } 4812 } 4813 unlock_user(argptr, arg, target_size_out); 4814 } 4815 } 4816 if (free_fm) { 4817 g_free(fm); 4818 } 4819 return ret; 4820 } 4821 #endif 4822 4823 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4824 int fd, int cmd, abi_long arg) 4825 { 4826 const argtype *arg_type = ie->arg_type; 4827 int target_size; 4828 void *argptr; 4829 int ret; 4830 struct ifconf *host_ifconf; 4831 uint32_t outbufsz; 4832 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4833 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) }; 4834 int target_ifreq_size; 4835 int nb_ifreq; 4836 int free_buf = 0; 4837 int i; 4838 int target_ifc_len; 4839 abi_long target_ifc_buf; 4840 int host_ifc_len; 4841 char *host_ifc_buf; 4842 4843 assert(arg_type[0] == TYPE_PTR); 4844 assert(ie->access == IOC_RW); 4845 4846 arg_type++; 4847 target_size = thunk_type_size(arg_type, 0); 4848 4849 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4850 if (!argptr) 4851 return -TARGET_EFAULT; 4852 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4853 unlock_user(argptr, arg, 0); 4854 4855 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4856 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4857 target_ifreq_size = thunk_type_size(ifreq_max_type, 0); 4858 4859 if (target_ifc_buf != 0) { 4860 target_ifc_len = host_ifconf->ifc_len; 4861 nb_ifreq = target_ifc_len / target_ifreq_size; 4862 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4863 4864 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4865 if (outbufsz > MAX_STRUCT_SIZE) { 4866 /* 4867 * We can't fit all the extents into the fixed size buffer. 4868 * Allocate one that is large enough and use it instead. 4869 */ 4870 host_ifconf = malloc(outbufsz); 4871 if (!host_ifconf) { 4872 return -TARGET_ENOMEM; 4873 } 4874 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4875 free_buf = 1; 4876 } 4877 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4878 4879 host_ifconf->ifc_len = host_ifc_len; 4880 } else { 4881 host_ifc_buf = NULL; 4882 } 4883 host_ifconf->ifc_buf = host_ifc_buf; 4884 4885 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 4886 if (!is_error(ret)) { 4887 /* convert host ifc_len to target ifc_len */ 4888 4889 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 4890 target_ifc_len = nb_ifreq * target_ifreq_size; 4891 host_ifconf->ifc_len = target_ifc_len; 4892 4893 /* restore target ifc_buf */ 4894 4895 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 4896 4897 /* copy struct ifconf to target user */ 4898 4899 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 4900 if (!argptr) 4901 return -TARGET_EFAULT; 4902 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 4903 unlock_user(argptr, arg, target_size); 4904 4905 if (target_ifc_buf != 0) { 4906 /* copy ifreq[] to target user */ 4907 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 4908 for (i = 0; i < nb_ifreq ; i++) { 4909 thunk_convert(argptr + i * target_ifreq_size, 4910 host_ifc_buf + i * sizeof(struct ifreq), 4911 ifreq_arg_type, THUNK_TARGET); 4912 } 4913 unlock_user(argptr, target_ifc_buf, target_ifc_len); 4914 } 4915 } 4916 4917 if (free_buf) { 4918 free(host_ifconf); 4919 } 4920 4921 return ret; 4922 } 4923 4924 #if defined(CONFIG_USBFS) 4925 #if HOST_LONG_BITS > 64 4926 #error USBDEVFS thunks do not support >64 bit hosts yet. 4927 #endif 4928 struct live_urb { 4929 uint64_t target_urb_adr; 4930 uint64_t target_buf_adr; 4931 char *target_buf_ptr; 4932 struct usbdevfs_urb host_urb; 4933 }; 4934 4935 static GHashTable *usbdevfs_urb_hashtable(void) 4936 { 4937 static GHashTable *urb_hashtable; 4938 4939 if (!urb_hashtable) { 4940 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 4941 } 4942 return urb_hashtable; 4943 } 4944 4945 static void urb_hashtable_insert(struct live_urb *urb) 4946 { 4947 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4948 g_hash_table_insert(urb_hashtable, urb, urb); 4949 } 4950 4951 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 4952 { 4953 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4954 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 4955 } 4956 4957 static void urb_hashtable_remove(struct live_urb *urb) 4958 { 4959 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4960 g_hash_table_remove(urb_hashtable, urb); 4961 } 4962 4963 static abi_long 4964 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 4965 int fd, int cmd, abi_long arg) 4966 { 4967 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 4968 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 4969 struct live_urb *lurb; 4970 void *argptr; 4971 uint64_t hurb; 4972 int target_size; 4973 uintptr_t target_urb_adr; 4974 abi_long ret; 4975 4976 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 4977 4978 memset(buf_temp, 0, sizeof(uint64_t)); 4979 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 4980 if (is_error(ret)) { 4981 return ret; 4982 } 4983 4984 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 4985 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 4986 if (!lurb->target_urb_adr) { 4987 return -TARGET_EFAULT; 4988 } 4989 urb_hashtable_remove(lurb); 4990 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 4991 lurb->host_urb.buffer_length); 4992 lurb->target_buf_ptr = NULL; 4993 4994 /* restore the guest buffer pointer */ 4995 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 4996 4997 /* update the guest urb struct */ 4998 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 4999 if (!argptr) { 5000 g_free(lurb); 5001 return -TARGET_EFAULT; 5002 } 5003 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 5004 unlock_user(argptr, lurb->target_urb_adr, target_size); 5005 5006 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 5007 /* write back the urb handle */ 5008 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5009 if (!argptr) { 5010 g_free(lurb); 5011 return -TARGET_EFAULT; 5012 } 5013 5014 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 5015 target_urb_adr = lurb->target_urb_adr; 5016 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 5017 unlock_user(argptr, arg, target_size); 5018 5019 g_free(lurb); 5020 return ret; 5021 } 5022 5023 static abi_long 5024 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 5025 uint8_t *buf_temp __attribute__((unused)), 5026 int fd, int cmd, abi_long arg) 5027 { 5028 struct live_urb *lurb; 5029 5030 /* map target address back to host URB with metadata. */ 5031 lurb = urb_hashtable_lookup(arg); 5032 if (!lurb) { 5033 return -TARGET_EFAULT; 5034 } 5035 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5036 } 5037 5038 static abi_long 5039 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 5040 int fd, int cmd, abi_long arg) 5041 { 5042 const argtype *arg_type = ie->arg_type; 5043 int target_size; 5044 abi_long ret; 5045 void *argptr; 5046 int rw_dir; 5047 struct live_urb *lurb; 5048 5049 /* 5050 * each submitted URB needs to map to a unique ID for the 5051 * kernel, and that unique ID needs to be a pointer to 5052 * host memory. hence, we need to malloc for each URB. 5053 * isochronous transfers have a variable length struct. 5054 */ 5055 arg_type++; 5056 target_size = thunk_type_size(arg_type, THUNK_TARGET); 5057 5058 /* construct host copy of urb and metadata */ 5059 lurb = g_try_malloc0(sizeof(struct live_urb)); 5060 if (!lurb) { 5061 return -TARGET_ENOMEM; 5062 } 5063 5064 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5065 if (!argptr) { 5066 g_free(lurb); 5067 return -TARGET_EFAULT; 5068 } 5069 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 5070 unlock_user(argptr, arg, 0); 5071 5072 lurb->target_urb_adr = arg; 5073 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 5074 5075 /* buffer space used depends on endpoint type so lock the entire buffer */ 5076 /* control type urbs should check the buffer contents for true direction */ 5077 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 5078 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 5079 lurb->host_urb.buffer_length, 1); 5080 if (lurb->target_buf_ptr == NULL) { 5081 g_free(lurb); 5082 return -TARGET_EFAULT; 5083 } 5084 5085 /* update buffer pointer in host copy */ 5086 lurb->host_urb.buffer = lurb->target_buf_ptr; 5087 5088 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5089 if (is_error(ret)) { 5090 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 5091 g_free(lurb); 5092 } else { 5093 urb_hashtable_insert(lurb); 5094 } 5095 5096 return ret; 5097 } 5098 #endif /* CONFIG_USBFS */ 5099 5100 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5101 int cmd, abi_long arg) 5102 { 5103 void *argptr; 5104 struct dm_ioctl *host_dm; 5105 abi_long guest_data; 5106 uint32_t guest_data_size; 5107 int target_size; 5108 const argtype *arg_type = ie->arg_type; 5109 abi_long ret; 5110 void *big_buf = NULL; 5111 char *host_data; 5112 5113 arg_type++; 5114 target_size = thunk_type_size(arg_type, 0); 5115 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5116 if (!argptr) { 5117 ret = -TARGET_EFAULT; 5118 goto out; 5119 } 5120 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5121 unlock_user(argptr, arg, 0); 5122 5123 /* buf_temp is too small, so fetch things into a bigger buffer */ 5124 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5125 memcpy(big_buf, buf_temp, target_size); 5126 buf_temp = big_buf; 5127 host_dm = big_buf; 5128 5129 guest_data = arg + host_dm->data_start; 5130 if ((guest_data - arg) < 0) { 5131 ret = -TARGET_EINVAL; 5132 goto out; 5133 } 5134 guest_data_size = host_dm->data_size - host_dm->data_start; 5135 host_data = (char*)host_dm + host_dm->data_start; 5136 5137 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5138 if (!argptr) { 5139 ret = -TARGET_EFAULT; 5140 goto out; 5141 } 5142 5143 switch (ie->host_cmd) { 5144 case DM_REMOVE_ALL: 5145 case DM_LIST_DEVICES: 5146 case DM_DEV_CREATE: 5147 case DM_DEV_REMOVE: 5148 case DM_DEV_SUSPEND: 5149 case DM_DEV_STATUS: 5150 case DM_DEV_WAIT: 5151 case DM_TABLE_STATUS: 5152 case DM_TABLE_CLEAR: 5153 case DM_TABLE_DEPS: 5154 case DM_LIST_VERSIONS: 5155 /* no input data */ 5156 break; 5157 case DM_DEV_RENAME: 5158 case DM_DEV_SET_GEOMETRY: 5159 /* data contains only strings */ 5160 memcpy(host_data, argptr, guest_data_size); 5161 break; 5162 case DM_TARGET_MSG: 5163 memcpy(host_data, argptr, guest_data_size); 5164 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5165 break; 5166 case DM_TABLE_LOAD: 5167 { 5168 void *gspec = argptr; 5169 void *cur_data = host_data; 5170 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5171 int spec_size = thunk_type_size(arg_type, 0); 5172 int i; 5173 5174 for (i = 0; i < host_dm->target_count; i++) { 5175 struct dm_target_spec *spec = cur_data; 5176 uint32_t next; 5177 int slen; 5178 5179 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5180 slen = strlen((char*)gspec + spec_size) + 1; 5181 next = spec->next; 5182 spec->next = sizeof(*spec) + slen; 5183 strcpy((char*)&spec[1], gspec + spec_size); 5184 gspec += next; 5185 cur_data += spec->next; 5186 } 5187 break; 5188 } 5189 default: 5190 ret = -TARGET_EINVAL; 5191 unlock_user(argptr, guest_data, 0); 5192 goto out; 5193 } 5194 unlock_user(argptr, guest_data, 0); 5195 5196 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5197 if (!is_error(ret)) { 5198 guest_data = arg + host_dm->data_start; 5199 guest_data_size = host_dm->data_size - host_dm->data_start; 5200 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5201 switch (ie->host_cmd) { 5202 case DM_REMOVE_ALL: 5203 case DM_DEV_CREATE: 5204 case DM_DEV_REMOVE: 5205 case DM_DEV_RENAME: 5206 case DM_DEV_SUSPEND: 5207 case DM_DEV_STATUS: 5208 case DM_TABLE_LOAD: 5209 case DM_TABLE_CLEAR: 5210 case DM_TARGET_MSG: 5211 case DM_DEV_SET_GEOMETRY: 5212 /* no return data */ 5213 break; 5214 case DM_LIST_DEVICES: 5215 { 5216 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5217 uint32_t remaining_data = guest_data_size; 5218 void *cur_data = argptr; 5219 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5220 int nl_size = 12; /* can't use thunk_size due to alignment */ 5221 5222 while (1) { 5223 uint32_t next = nl->next; 5224 if (next) { 5225 nl->next = nl_size + (strlen(nl->name) + 1); 5226 } 5227 if (remaining_data < nl->next) { 5228 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5229 break; 5230 } 5231 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5232 strcpy(cur_data + nl_size, nl->name); 5233 cur_data += nl->next; 5234 remaining_data -= nl->next; 5235 if (!next) { 5236 break; 5237 } 5238 nl = (void*)nl + next; 5239 } 5240 break; 5241 } 5242 case DM_DEV_WAIT: 5243 case DM_TABLE_STATUS: 5244 { 5245 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5246 void *cur_data = argptr; 5247 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5248 int spec_size = thunk_type_size(arg_type, 0); 5249 int i; 5250 5251 for (i = 0; i < host_dm->target_count; i++) { 5252 uint32_t next = spec->next; 5253 int slen = strlen((char*)&spec[1]) + 1; 5254 spec->next = (cur_data - argptr) + spec_size + slen; 5255 if (guest_data_size < spec->next) { 5256 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5257 break; 5258 } 5259 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5260 strcpy(cur_data + spec_size, (char*)&spec[1]); 5261 cur_data = argptr + spec->next; 5262 spec = (void*)host_dm + host_dm->data_start + next; 5263 } 5264 break; 5265 } 5266 case DM_TABLE_DEPS: 5267 { 5268 void *hdata = (void*)host_dm + host_dm->data_start; 5269 int count = *(uint32_t*)hdata; 5270 uint64_t *hdev = hdata + 8; 5271 uint64_t *gdev = argptr + 8; 5272 int i; 5273 5274 *(uint32_t*)argptr = tswap32(count); 5275 for (i = 0; i < count; i++) { 5276 *gdev = tswap64(*hdev); 5277 gdev++; 5278 hdev++; 5279 } 5280 break; 5281 } 5282 case DM_LIST_VERSIONS: 5283 { 5284 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5285 uint32_t remaining_data = guest_data_size; 5286 void *cur_data = argptr; 5287 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5288 int vers_size = thunk_type_size(arg_type, 0); 5289 5290 while (1) { 5291 uint32_t next = vers->next; 5292 if (next) { 5293 vers->next = vers_size + (strlen(vers->name) + 1); 5294 } 5295 if (remaining_data < vers->next) { 5296 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5297 break; 5298 } 5299 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5300 strcpy(cur_data + vers_size, vers->name); 5301 cur_data += vers->next; 5302 remaining_data -= vers->next; 5303 if (!next) { 5304 break; 5305 } 5306 vers = (void*)vers + next; 5307 } 5308 break; 5309 } 5310 default: 5311 unlock_user(argptr, guest_data, 0); 5312 ret = -TARGET_EINVAL; 5313 goto out; 5314 } 5315 unlock_user(argptr, guest_data, guest_data_size); 5316 5317 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5318 if (!argptr) { 5319 ret = -TARGET_EFAULT; 5320 goto out; 5321 } 5322 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5323 unlock_user(argptr, arg, target_size); 5324 } 5325 out: 5326 g_free(big_buf); 5327 return ret; 5328 } 5329 5330 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5331 int cmd, abi_long arg) 5332 { 5333 void *argptr; 5334 int target_size; 5335 const argtype *arg_type = ie->arg_type; 5336 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5337 abi_long ret; 5338 5339 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5340 struct blkpg_partition host_part; 5341 5342 /* Read and convert blkpg */ 5343 arg_type++; 5344 target_size = thunk_type_size(arg_type, 0); 5345 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5346 if (!argptr) { 5347 ret = -TARGET_EFAULT; 5348 goto out; 5349 } 5350 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5351 unlock_user(argptr, arg, 0); 5352 5353 switch (host_blkpg->op) { 5354 case BLKPG_ADD_PARTITION: 5355 case BLKPG_DEL_PARTITION: 5356 /* payload is struct blkpg_partition */ 5357 break; 5358 default: 5359 /* Unknown opcode */ 5360 ret = -TARGET_EINVAL; 5361 goto out; 5362 } 5363 5364 /* Read and convert blkpg->data */ 5365 arg = (abi_long)(uintptr_t)host_blkpg->data; 5366 target_size = thunk_type_size(part_arg_type, 0); 5367 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5368 if (!argptr) { 5369 ret = -TARGET_EFAULT; 5370 goto out; 5371 } 5372 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5373 unlock_user(argptr, arg, 0); 5374 5375 /* Swizzle the data pointer to our local copy and call! */ 5376 host_blkpg->data = &host_part; 5377 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5378 5379 out: 5380 return ret; 5381 } 5382 5383 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5384 int fd, int cmd, abi_long arg) 5385 { 5386 const argtype *arg_type = ie->arg_type; 5387 const StructEntry *se; 5388 const argtype *field_types; 5389 const int *dst_offsets, *src_offsets; 5390 int target_size; 5391 void *argptr; 5392 abi_ulong *target_rt_dev_ptr = NULL; 5393 unsigned long *host_rt_dev_ptr = NULL; 5394 abi_long ret; 5395 int i; 5396 5397 assert(ie->access == IOC_W); 5398 assert(*arg_type == TYPE_PTR); 5399 arg_type++; 5400 assert(*arg_type == TYPE_STRUCT); 5401 target_size = thunk_type_size(arg_type, 0); 5402 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5403 if (!argptr) { 5404 return -TARGET_EFAULT; 5405 } 5406 arg_type++; 5407 assert(*arg_type == (int)STRUCT_rtentry); 5408 se = struct_entries + *arg_type++; 5409 assert(se->convert[0] == NULL); 5410 /* convert struct here to be able to catch rt_dev string */ 5411 field_types = se->field_types; 5412 dst_offsets = se->field_offsets[THUNK_HOST]; 5413 src_offsets = se->field_offsets[THUNK_TARGET]; 5414 for (i = 0; i < se->nb_fields; i++) { 5415 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5416 assert(*field_types == TYPE_PTRVOID); 5417 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5418 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5419 if (*target_rt_dev_ptr != 0) { 5420 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5421 tswapal(*target_rt_dev_ptr)); 5422 if (!*host_rt_dev_ptr) { 5423 unlock_user(argptr, arg, 0); 5424 return -TARGET_EFAULT; 5425 } 5426 } else { 5427 *host_rt_dev_ptr = 0; 5428 } 5429 field_types++; 5430 continue; 5431 } 5432 field_types = thunk_convert(buf_temp + dst_offsets[i], 5433 argptr + src_offsets[i], 5434 field_types, THUNK_HOST); 5435 } 5436 unlock_user(argptr, arg, 0); 5437 5438 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5439 5440 assert(host_rt_dev_ptr != NULL); 5441 assert(target_rt_dev_ptr != NULL); 5442 if (*host_rt_dev_ptr != 0) { 5443 unlock_user((void *)*host_rt_dev_ptr, 5444 *target_rt_dev_ptr, 0); 5445 } 5446 return ret; 5447 } 5448 5449 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5450 int fd, int cmd, abi_long arg) 5451 { 5452 int sig = target_to_host_signal(arg); 5453 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5454 } 5455 5456 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5457 int fd, int cmd, abi_long arg) 5458 { 5459 struct timeval tv; 5460 abi_long ret; 5461 5462 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5463 if (is_error(ret)) { 5464 return ret; 5465 } 5466 5467 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5468 if (copy_to_user_timeval(arg, &tv)) { 5469 return -TARGET_EFAULT; 5470 } 5471 } else { 5472 if (copy_to_user_timeval64(arg, &tv)) { 5473 return -TARGET_EFAULT; 5474 } 5475 } 5476 5477 return ret; 5478 } 5479 5480 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5481 int fd, int cmd, abi_long arg) 5482 { 5483 struct timespec ts; 5484 abi_long ret; 5485 5486 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5487 if (is_error(ret)) { 5488 return ret; 5489 } 5490 5491 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5492 if (host_to_target_timespec(arg, &ts)) { 5493 return -TARGET_EFAULT; 5494 } 5495 } else{ 5496 if (host_to_target_timespec64(arg, &ts)) { 5497 return -TARGET_EFAULT; 5498 } 5499 } 5500 5501 return ret; 5502 } 5503 5504 #ifdef TIOCGPTPEER 5505 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5506 int fd, int cmd, abi_long arg) 5507 { 5508 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5509 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5510 } 5511 #endif 5512 5513 #ifdef HAVE_DRM_H 5514 5515 static void unlock_drm_version(struct drm_version *host_ver, 5516 struct target_drm_version *target_ver, 5517 bool copy) 5518 { 5519 unlock_user(host_ver->name, target_ver->name, 5520 copy ? host_ver->name_len : 0); 5521 unlock_user(host_ver->date, target_ver->date, 5522 copy ? host_ver->date_len : 0); 5523 unlock_user(host_ver->desc, target_ver->desc, 5524 copy ? host_ver->desc_len : 0); 5525 } 5526 5527 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, 5528 struct target_drm_version *target_ver) 5529 { 5530 memset(host_ver, 0, sizeof(*host_ver)); 5531 5532 __get_user(host_ver->name_len, &target_ver->name_len); 5533 if (host_ver->name_len) { 5534 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name, 5535 target_ver->name_len, 0); 5536 if (!host_ver->name) { 5537 return -EFAULT; 5538 } 5539 } 5540 5541 __get_user(host_ver->date_len, &target_ver->date_len); 5542 if (host_ver->date_len) { 5543 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date, 5544 target_ver->date_len, 0); 5545 if (!host_ver->date) { 5546 goto err; 5547 } 5548 } 5549 5550 __get_user(host_ver->desc_len, &target_ver->desc_len); 5551 if (host_ver->desc_len) { 5552 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc, 5553 target_ver->desc_len, 0); 5554 if (!host_ver->desc) { 5555 goto err; 5556 } 5557 } 5558 5559 return 0; 5560 err: 5561 unlock_drm_version(host_ver, target_ver, false); 5562 return -EFAULT; 5563 } 5564 5565 static inline void host_to_target_drmversion( 5566 struct target_drm_version *target_ver, 5567 struct drm_version *host_ver) 5568 { 5569 __put_user(host_ver->version_major, &target_ver->version_major); 5570 __put_user(host_ver->version_minor, &target_ver->version_minor); 5571 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel); 5572 __put_user(host_ver->name_len, &target_ver->name_len); 5573 __put_user(host_ver->date_len, &target_ver->date_len); 5574 __put_user(host_ver->desc_len, &target_ver->desc_len); 5575 unlock_drm_version(host_ver, target_ver, true); 5576 } 5577 5578 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, 5579 int fd, int cmd, abi_long arg) 5580 { 5581 struct drm_version *ver; 5582 struct target_drm_version *target_ver; 5583 abi_long ret; 5584 5585 switch (ie->host_cmd) { 5586 case DRM_IOCTL_VERSION: 5587 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) { 5588 return -TARGET_EFAULT; 5589 } 5590 ver = (struct drm_version *)buf_temp; 5591 ret = target_to_host_drmversion(ver, target_ver); 5592 if (!is_error(ret)) { 5593 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); 5594 if (is_error(ret)) { 5595 unlock_drm_version(ver, target_ver, false); 5596 } else { 5597 host_to_target_drmversion(target_ver, ver); 5598 } 5599 } 5600 unlock_user_struct(target_ver, arg, 0); 5601 return ret; 5602 } 5603 return -TARGET_ENOSYS; 5604 } 5605 5606 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie, 5607 struct drm_i915_getparam *gparam, 5608 int fd, abi_long arg) 5609 { 5610 abi_long ret; 5611 int value; 5612 struct target_drm_i915_getparam *target_gparam; 5613 5614 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) { 5615 return -TARGET_EFAULT; 5616 } 5617 5618 __get_user(gparam->param, &target_gparam->param); 5619 gparam->value = &value; 5620 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam)); 5621 put_user_s32(value, target_gparam->value); 5622 5623 unlock_user_struct(target_gparam, arg, 0); 5624 return ret; 5625 } 5626 5627 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp, 5628 int fd, int cmd, abi_long arg) 5629 { 5630 switch (ie->host_cmd) { 5631 case DRM_IOCTL_I915_GETPARAM: 5632 return do_ioctl_drm_i915_getparam(ie, 5633 (struct drm_i915_getparam *)buf_temp, 5634 fd, arg); 5635 default: 5636 return -TARGET_ENOSYS; 5637 } 5638 } 5639 5640 #endif 5641 5642 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp, 5643 int fd, int cmd, abi_long arg) 5644 { 5645 struct tun_filter *filter = (struct tun_filter *)buf_temp; 5646 struct tun_filter *target_filter; 5647 char *target_addr; 5648 5649 assert(ie->access == IOC_W); 5650 5651 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1); 5652 if (!target_filter) { 5653 return -TARGET_EFAULT; 5654 } 5655 filter->flags = tswap16(target_filter->flags); 5656 filter->count = tswap16(target_filter->count); 5657 unlock_user(target_filter, arg, 0); 5658 5659 if (filter->count) { 5660 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN > 5661 MAX_STRUCT_SIZE) { 5662 return -TARGET_EFAULT; 5663 } 5664 5665 target_addr = lock_user(VERIFY_READ, 5666 arg + offsetof(struct tun_filter, addr), 5667 filter->count * ETH_ALEN, 1); 5668 if (!target_addr) { 5669 return -TARGET_EFAULT; 5670 } 5671 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN); 5672 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0); 5673 } 5674 5675 return get_errno(safe_ioctl(fd, ie->host_cmd, filter)); 5676 } 5677 5678 IOCTLEntry ioctl_entries[] = { 5679 #define IOCTL(cmd, access, ...) \ 5680 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5681 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5682 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5683 #define IOCTL_IGNORE(cmd) \ 5684 { TARGET_ ## cmd, 0, #cmd }, 5685 #include "ioctls.h" 5686 { 0, 0, }, 5687 }; 5688 5689 /* ??? Implement proper locking for ioctls. */ 5690 /* do_ioctl() Must return target values and target errnos. */ 5691 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5692 { 5693 const IOCTLEntry *ie; 5694 const argtype *arg_type; 5695 abi_long ret; 5696 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5697 int target_size; 5698 void *argptr; 5699 5700 ie = ioctl_entries; 5701 for(;;) { 5702 if (ie->target_cmd == 0) { 5703 qemu_log_mask( 5704 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5705 return -TARGET_ENOSYS; 5706 } 5707 if (ie->target_cmd == cmd) 5708 break; 5709 ie++; 5710 } 5711 arg_type = ie->arg_type; 5712 if (ie->do_ioctl) { 5713 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5714 } else if (!ie->host_cmd) { 5715 /* Some architectures define BSD ioctls in their headers 5716 that are not implemented in Linux. */ 5717 return -TARGET_ENOSYS; 5718 } 5719 5720 switch(arg_type[0]) { 5721 case TYPE_NULL: 5722 /* no argument */ 5723 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5724 break; 5725 case TYPE_PTRVOID: 5726 case TYPE_INT: 5727 case TYPE_LONG: 5728 case TYPE_ULONG: 5729 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5730 break; 5731 case TYPE_PTR: 5732 arg_type++; 5733 target_size = thunk_type_size(arg_type, 0); 5734 switch(ie->access) { 5735 case IOC_R: 5736 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5737 if (!is_error(ret)) { 5738 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5739 if (!argptr) 5740 return -TARGET_EFAULT; 5741 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5742 unlock_user(argptr, arg, target_size); 5743 } 5744 break; 5745 case IOC_W: 5746 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5747 if (!argptr) 5748 return -TARGET_EFAULT; 5749 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5750 unlock_user(argptr, arg, 0); 5751 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5752 break; 5753 default: 5754 case IOC_RW: 5755 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5756 if (!argptr) 5757 return -TARGET_EFAULT; 5758 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5759 unlock_user(argptr, arg, 0); 5760 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5761 if (!is_error(ret)) { 5762 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5763 if (!argptr) 5764 return -TARGET_EFAULT; 5765 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5766 unlock_user(argptr, arg, target_size); 5767 } 5768 break; 5769 } 5770 break; 5771 default: 5772 qemu_log_mask(LOG_UNIMP, 5773 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5774 (long)cmd, arg_type[0]); 5775 ret = -TARGET_ENOSYS; 5776 break; 5777 } 5778 return ret; 5779 } 5780 5781 static const bitmask_transtbl iflag_tbl[] = { 5782 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5783 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5784 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5785 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5786 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5787 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5788 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5789 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5790 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5791 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5792 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5793 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5794 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5795 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5796 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8}, 5797 { 0, 0, 0, 0 } 5798 }; 5799 5800 static const bitmask_transtbl oflag_tbl[] = { 5801 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5802 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5803 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5804 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5805 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5806 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5807 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5808 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5809 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5810 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5811 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5812 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5813 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5814 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5815 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5816 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5817 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5818 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5819 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5820 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5821 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5822 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5823 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5824 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5825 { 0, 0, 0, 0 } 5826 }; 5827 5828 static const bitmask_transtbl cflag_tbl[] = { 5829 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5830 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5831 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5832 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5833 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5834 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5835 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5836 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5837 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5838 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5839 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5840 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5841 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5842 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5843 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5844 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5845 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5846 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5847 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5848 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5849 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5850 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5851 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5852 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5853 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5854 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5855 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5856 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5857 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5858 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5859 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5860 { 0, 0, 0, 0 } 5861 }; 5862 5863 static const bitmask_transtbl lflag_tbl[] = { 5864 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5865 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5866 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5867 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5868 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5869 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5870 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5871 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5872 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5873 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5874 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5875 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5876 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5877 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5878 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5879 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC}, 5880 { 0, 0, 0, 0 } 5881 }; 5882 5883 static void target_to_host_termios (void *dst, const void *src) 5884 { 5885 struct host_termios *host = dst; 5886 const struct target_termios *target = src; 5887 5888 host->c_iflag = 5889 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5890 host->c_oflag = 5891 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5892 host->c_cflag = 5893 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5894 host->c_lflag = 5895 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 5896 host->c_line = target->c_line; 5897 5898 memset(host->c_cc, 0, sizeof(host->c_cc)); 5899 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 5900 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 5901 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 5902 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 5903 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 5904 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 5905 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 5906 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 5907 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 5908 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 5909 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 5910 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 5911 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 5912 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 5913 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 5914 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 5915 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 5916 } 5917 5918 static void host_to_target_termios (void *dst, const void *src) 5919 { 5920 struct target_termios *target = dst; 5921 const struct host_termios *host = src; 5922 5923 target->c_iflag = 5924 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 5925 target->c_oflag = 5926 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 5927 target->c_cflag = 5928 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 5929 target->c_lflag = 5930 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 5931 target->c_line = host->c_line; 5932 5933 memset(target->c_cc, 0, sizeof(target->c_cc)); 5934 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 5935 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 5936 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 5937 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 5938 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 5939 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 5940 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 5941 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 5942 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 5943 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 5944 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 5945 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 5946 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 5947 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 5948 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 5949 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 5950 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 5951 } 5952 5953 static const StructEntry struct_termios_def = { 5954 .convert = { host_to_target_termios, target_to_host_termios }, 5955 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 5956 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 5957 .print = print_termios, 5958 }; 5959 5960 static const bitmask_transtbl mmap_flags_tbl[] = { 5961 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 5962 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 5963 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 5964 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 5965 MAP_ANONYMOUS, MAP_ANONYMOUS }, 5966 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 5967 MAP_GROWSDOWN, MAP_GROWSDOWN }, 5968 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 5969 MAP_DENYWRITE, MAP_DENYWRITE }, 5970 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 5971 MAP_EXECUTABLE, MAP_EXECUTABLE }, 5972 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 5973 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 5974 MAP_NORESERVE, MAP_NORESERVE }, 5975 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 5976 /* MAP_STACK had been ignored by the kernel for quite some time. 5977 Recognize it for the target insofar as we do not want to pass 5978 it through to the host. */ 5979 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 5980 { 0, 0, 0, 0 } 5981 }; 5982 5983 /* 5984 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 5985 * TARGET_I386 is defined if TARGET_X86_64 is defined 5986 */ 5987 #if defined(TARGET_I386) 5988 5989 /* NOTE: there is really one LDT for all the threads */ 5990 static uint8_t *ldt_table; 5991 5992 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 5993 { 5994 int size; 5995 void *p; 5996 5997 if (!ldt_table) 5998 return 0; 5999 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 6000 if (size > bytecount) 6001 size = bytecount; 6002 p = lock_user(VERIFY_WRITE, ptr, size, 0); 6003 if (!p) 6004 return -TARGET_EFAULT; 6005 /* ??? Should this by byteswapped? */ 6006 memcpy(p, ldt_table, size); 6007 unlock_user(p, ptr, size); 6008 return size; 6009 } 6010 6011 /* XXX: add locking support */ 6012 static abi_long write_ldt(CPUX86State *env, 6013 abi_ulong ptr, unsigned long bytecount, int oldmode) 6014 { 6015 struct target_modify_ldt_ldt_s ldt_info; 6016 struct target_modify_ldt_ldt_s *target_ldt_info; 6017 int seg_32bit, contents, read_exec_only, limit_in_pages; 6018 int seg_not_present, useable, lm; 6019 uint32_t *lp, entry_1, entry_2; 6020 6021 if (bytecount != sizeof(ldt_info)) 6022 return -TARGET_EINVAL; 6023 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 6024 return -TARGET_EFAULT; 6025 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6026 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6027 ldt_info.limit = tswap32(target_ldt_info->limit); 6028 ldt_info.flags = tswap32(target_ldt_info->flags); 6029 unlock_user_struct(target_ldt_info, ptr, 0); 6030 6031 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 6032 return -TARGET_EINVAL; 6033 seg_32bit = ldt_info.flags & 1; 6034 contents = (ldt_info.flags >> 1) & 3; 6035 read_exec_only = (ldt_info.flags >> 3) & 1; 6036 limit_in_pages = (ldt_info.flags >> 4) & 1; 6037 seg_not_present = (ldt_info.flags >> 5) & 1; 6038 useable = (ldt_info.flags >> 6) & 1; 6039 #ifdef TARGET_ABI32 6040 lm = 0; 6041 #else 6042 lm = (ldt_info.flags >> 7) & 1; 6043 #endif 6044 if (contents == 3) { 6045 if (oldmode) 6046 return -TARGET_EINVAL; 6047 if (seg_not_present == 0) 6048 return -TARGET_EINVAL; 6049 } 6050 /* allocate the LDT */ 6051 if (!ldt_table) { 6052 env->ldt.base = target_mmap(0, 6053 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 6054 PROT_READ|PROT_WRITE, 6055 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 6056 if (env->ldt.base == -1) 6057 return -TARGET_ENOMEM; 6058 memset(g2h_untagged(env->ldt.base), 0, 6059 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 6060 env->ldt.limit = 0xffff; 6061 ldt_table = g2h_untagged(env->ldt.base); 6062 } 6063 6064 /* NOTE: same code as Linux kernel */ 6065 /* Allow LDTs to be cleared by the user. */ 6066 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6067 if (oldmode || 6068 (contents == 0 && 6069 read_exec_only == 1 && 6070 seg_32bit == 0 && 6071 limit_in_pages == 0 && 6072 seg_not_present == 1 && 6073 useable == 0 )) { 6074 entry_1 = 0; 6075 entry_2 = 0; 6076 goto install; 6077 } 6078 } 6079 6080 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6081 (ldt_info.limit & 0x0ffff); 6082 entry_2 = (ldt_info.base_addr & 0xff000000) | 6083 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6084 (ldt_info.limit & 0xf0000) | 6085 ((read_exec_only ^ 1) << 9) | 6086 (contents << 10) | 6087 ((seg_not_present ^ 1) << 15) | 6088 (seg_32bit << 22) | 6089 (limit_in_pages << 23) | 6090 (lm << 21) | 6091 0x7000; 6092 if (!oldmode) 6093 entry_2 |= (useable << 20); 6094 6095 /* Install the new entry ... */ 6096 install: 6097 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 6098 lp[0] = tswap32(entry_1); 6099 lp[1] = tswap32(entry_2); 6100 return 0; 6101 } 6102 6103 /* specific and weird i386 syscalls */ 6104 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6105 unsigned long bytecount) 6106 { 6107 abi_long ret; 6108 6109 switch (func) { 6110 case 0: 6111 ret = read_ldt(ptr, bytecount); 6112 break; 6113 case 1: 6114 ret = write_ldt(env, ptr, bytecount, 1); 6115 break; 6116 case 0x11: 6117 ret = write_ldt(env, ptr, bytecount, 0); 6118 break; 6119 default: 6120 ret = -TARGET_ENOSYS; 6121 break; 6122 } 6123 return ret; 6124 } 6125 6126 #if defined(TARGET_ABI32) 6127 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6128 { 6129 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6130 struct target_modify_ldt_ldt_s ldt_info; 6131 struct target_modify_ldt_ldt_s *target_ldt_info; 6132 int seg_32bit, contents, read_exec_only, limit_in_pages; 6133 int seg_not_present, useable, lm; 6134 uint32_t *lp, entry_1, entry_2; 6135 int i; 6136 6137 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6138 if (!target_ldt_info) 6139 return -TARGET_EFAULT; 6140 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6141 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6142 ldt_info.limit = tswap32(target_ldt_info->limit); 6143 ldt_info.flags = tswap32(target_ldt_info->flags); 6144 if (ldt_info.entry_number == -1) { 6145 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6146 if (gdt_table[i] == 0) { 6147 ldt_info.entry_number = i; 6148 target_ldt_info->entry_number = tswap32(i); 6149 break; 6150 } 6151 } 6152 } 6153 unlock_user_struct(target_ldt_info, ptr, 1); 6154 6155 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6156 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6157 return -TARGET_EINVAL; 6158 seg_32bit = ldt_info.flags & 1; 6159 contents = (ldt_info.flags >> 1) & 3; 6160 read_exec_only = (ldt_info.flags >> 3) & 1; 6161 limit_in_pages = (ldt_info.flags >> 4) & 1; 6162 seg_not_present = (ldt_info.flags >> 5) & 1; 6163 useable = (ldt_info.flags >> 6) & 1; 6164 #ifdef TARGET_ABI32 6165 lm = 0; 6166 #else 6167 lm = (ldt_info.flags >> 7) & 1; 6168 #endif 6169 6170 if (contents == 3) { 6171 if (seg_not_present == 0) 6172 return -TARGET_EINVAL; 6173 } 6174 6175 /* NOTE: same code as Linux kernel */ 6176 /* Allow LDTs to be cleared by the user. */ 6177 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6178 if ((contents == 0 && 6179 read_exec_only == 1 && 6180 seg_32bit == 0 && 6181 limit_in_pages == 0 && 6182 seg_not_present == 1 && 6183 useable == 0 )) { 6184 entry_1 = 0; 6185 entry_2 = 0; 6186 goto install; 6187 } 6188 } 6189 6190 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6191 (ldt_info.limit & 0x0ffff); 6192 entry_2 = (ldt_info.base_addr & 0xff000000) | 6193 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6194 (ldt_info.limit & 0xf0000) | 6195 ((read_exec_only ^ 1) << 9) | 6196 (contents << 10) | 6197 ((seg_not_present ^ 1) << 15) | 6198 (seg_32bit << 22) | 6199 (limit_in_pages << 23) | 6200 (useable << 20) | 6201 (lm << 21) | 6202 0x7000; 6203 6204 /* Install the new entry ... */ 6205 install: 6206 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6207 lp[0] = tswap32(entry_1); 6208 lp[1] = tswap32(entry_2); 6209 return 0; 6210 } 6211 6212 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6213 { 6214 struct target_modify_ldt_ldt_s *target_ldt_info; 6215 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6216 uint32_t base_addr, limit, flags; 6217 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6218 int seg_not_present, useable, lm; 6219 uint32_t *lp, entry_1, entry_2; 6220 6221 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6222 if (!target_ldt_info) 6223 return -TARGET_EFAULT; 6224 idx = tswap32(target_ldt_info->entry_number); 6225 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6226 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6227 unlock_user_struct(target_ldt_info, ptr, 1); 6228 return -TARGET_EINVAL; 6229 } 6230 lp = (uint32_t *)(gdt_table + idx); 6231 entry_1 = tswap32(lp[0]); 6232 entry_2 = tswap32(lp[1]); 6233 6234 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6235 contents = (entry_2 >> 10) & 3; 6236 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6237 seg_32bit = (entry_2 >> 22) & 1; 6238 limit_in_pages = (entry_2 >> 23) & 1; 6239 useable = (entry_2 >> 20) & 1; 6240 #ifdef TARGET_ABI32 6241 lm = 0; 6242 #else 6243 lm = (entry_2 >> 21) & 1; 6244 #endif 6245 flags = (seg_32bit << 0) | (contents << 1) | 6246 (read_exec_only << 3) | (limit_in_pages << 4) | 6247 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6248 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6249 base_addr = (entry_1 >> 16) | 6250 (entry_2 & 0xff000000) | 6251 ((entry_2 & 0xff) << 16); 6252 target_ldt_info->base_addr = tswapal(base_addr); 6253 target_ldt_info->limit = tswap32(limit); 6254 target_ldt_info->flags = tswap32(flags); 6255 unlock_user_struct(target_ldt_info, ptr, 1); 6256 return 0; 6257 } 6258 6259 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6260 { 6261 return -TARGET_ENOSYS; 6262 } 6263 #else 6264 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6265 { 6266 abi_long ret = 0; 6267 abi_ulong val; 6268 int idx; 6269 6270 switch(code) { 6271 case TARGET_ARCH_SET_GS: 6272 case TARGET_ARCH_SET_FS: 6273 if (code == TARGET_ARCH_SET_GS) 6274 idx = R_GS; 6275 else 6276 idx = R_FS; 6277 cpu_x86_load_seg(env, idx, 0); 6278 env->segs[idx].base = addr; 6279 break; 6280 case TARGET_ARCH_GET_GS: 6281 case TARGET_ARCH_GET_FS: 6282 if (code == TARGET_ARCH_GET_GS) 6283 idx = R_GS; 6284 else 6285 idx = R_FS; 6286 val = env->segs[idx].base; 6287 if (put_user(val, addr, abi_ulong)) 6288 ret = -TARGET_EFAULT; 6289 break; 6290 default: 6291 ret = -TARGET_EINVAL; 6292 break; 6293 } 6294 return ret; 6295 } 6296 #endif /* defined(TARGET_ABI32 */ 6297 #endif /* defined(TARGET_I386) */ 6298 6299 /* 6300 * These constants are generic. Supply any that are missing from the host. 6301 */ 6302 #ifndef PR_SET_NAME 6303 # define PR_SET_NAME 15 6304 # define PR_GET_NAME 16 6305 #endif 6306 #ifndef PR_SET_FP_MODE 6307 # define PR_SET_FP_MODE 45 6308 # define PR_GET_FP_MODE 46 6309 # define PR_FP_MODE_FR (1 << 0) 6310 # define PR_FP_MODE_FRE (1 << 1) 6311 #endif 6312 #ifndef PR_SVE_SET_VL 6313 # define PR_SVE_SET_VL 50 6314 # define PR_SVE_GET_VL 51 6315 # define PR_SVE_VL_LEN_MASK 0xffff 6316 # define PR_SVE_VL_INHERIT (1 << 17) 6317 #endif 6318 #ifndef PR_PAC_RESET_KEYS 6319 # define PR_PAC_RESET_KEYS 54 6320 # define PR_PAC_APIAKEY (1 << 0) 6321 # define PR_PAC_APIBKEY (1 << 1) 6322 # define PR_PAC_APDAKEY (1 << 2) 6323 # define PR_PAC_APDBKEY (1 << 3) 6324 # define PR_PAC_APGAKEY (1 << 4) 6325 #endif 6326 #ifndef PR_SET_TAGGED_ADDR_CTRL 6327 # define PR_SET_TAGGED_ADDR_CTRL 55 6328 # define PR_GET_TAGGED_ADDR_CTRL 56 6329 # define PR_TAGGED_ADDR_ENABLE (1UL << 0) 6330 #endif 6331 #ifndef PR_MTE_TCF_SHIFT 6332 # define PR_MTE_TCF_SHIFT 1 6333 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 6334 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 6335 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 6336 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT) 6337 # define PR_MTE_TAG_SHIFT 3 6338 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT) 6339 #endif 6340 6341 #include "target_prctl.h" 6342 6343 static abi_long do_prctl_inval0(CPUArchState *env) 6344 { 6345 return -TARGET_EINVAL; 6346 } 6347 6348 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2) 6349 { 6350 return -TARGET_EINVAL; 6351 } 6352 6353 #ifndef do_prctl_get_fp_mode 6354 #define do_prctl_get_fp_mode do_prctl_inval0 6355 #endif 6356 #ifndef do_prctl_set_fp_mode 6357 #define do_prctl_set_fp_mode do_prctl_inval1 6358 #endif 6359 #ifndef do_prctl_get_vl 6360 #define do_prctl_get_vl do_prctl_inval0 6361 #endif 6362 #ifndef do_prctl_set_vl 6363 #define do_prctl_set_vl do_prctl_inval1 6364 #endif 6365 #ifndef do_prctl_reset_keys 6366 #define do_prctl_reset_keys do_prctl_inval1 6367 #endif 6368 #ifndef do_prctl_set_tagged_addr_ctrl 6369 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1 6370 #endif 6371 #ifndef do_prctl_get_tagged_addr_ctrl 6372 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0 6373 #endif 6374 6375 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2, 6376 abi_long arg3, abi_long arg4, abi_long arg5) 6377 { 6378 abi_long ret; 6379 6380 switch (option) { 6381 case PR_GET_PDEATHSIG: 6382 { 6383 int deathsig; 6384 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig, 6385 arg3, arg4, arg5)); 6386 if (!is_error(ret) && arg2 && put_user_s32(deathsig, arg2)) { 6387 return -TARGET_EFAULT; 6388 } 6389 return ret; 6390 } 6391 case PR_GET_NAME: 6392 { 6393 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 6394 if (!name) { 6395 return -TARGET_EFAULT; 6396 } 6397 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name, 6398 arg3, arg4, arg5)); 6399 unlock_user(name, arg2, 16); 6400 return ret; 6401 } 6402 case PR_SET_NAME: 6403 { 6404 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 6405 if (!name) { 6406 return -TARGET_EFAULT; 6407 } 6408 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name, 6409 arg3, arg4, arg5)); 6410 unlock_user(name, arg2, 0); 6411 return ret; 6412 } 6413 case PR_GET_FP_MODE: 6414 return do_prctl_get_fp_mode(env); 6415 case PR_SET_FP_MODE: 6416 return do_prctl_set_fp_mode(env, arg2); 6417 case PR_SVE_GET_VL: 6418 return do_prctl_get_vl(env); 6419 case PR_SVE_SET_VL: 6420 return do_prctl_set_vl(env, arg2); 6421 case PR_PAC_RESET_KEYS: 6422 if (arg3 || arg4 || arg5) { 6423 return -TARGET_EINVAL; 6424 } 6425 return do_prctl_reset_keys(env, arg2); 6426 case PR_SET_TAGGED_ADDR_CTRL: 6427 if (arg3 || arg4 || arg5) { 6428 return -TARGET_EINVAL; 6429 } 6430 return do_prctl_set_tagged_addr_ctrl(env, arg2); 6431 case PR_GET_TAGGED_ADDR_CTRL: 6432 if (arg2 || arg3 || arg4 || arg5) { 6433 return -TARGET_EINVAL; 6434 } 6435 return do_prctl_get_tagged_addr_ctrl(env); 6436 case PR_GET_SECCOMP: 6437 case PR_SET_SECCOMP: 6438 /* Disable seccomp to prevent the target disabling syscalls we need. */ 6439 return -TARGET_EINVAL; 6440 default: 6441 /* Most prctl options have no pointer arguments */ 6442 return get_errno(prctl(option, arg2, arg3, arg4, arg5)); 6443 } 6444 } 6445 6446 #define NEW_STACK_SIZE 0x40000 6447 6448 6449 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6450 typedef struct { 6451 CPUArchState *env; 6452 pthread_mutex_t mutex; 6453 pthread_cond_t cond; 6454 pthread_t thread; 6455 uint32_t tid; 6456 abi_ulong child_tidptr; 6457 abi_ulong parent_tidptr; 6458 sigset_t sigmask; 6459 } new_thread_info; 6460 6461 static void *clone_func(void *arg) 6462 { 6463 new_thread_info *info = arg; 6464 CPUArchState *env; 6465 CPUState *cpu; 6466 TaskState *ts; 6467 6468 rcu_register_thread(); 6469 tcg_register_thread(); 6470 env = info->env; 6471 cpu = env_cpu(env); 6472 thread_cpu = cpu; 6473 ts = (TaskState *)cpu->opaque; 6474 info->tid = sys_gettid(); 6475 task_settid(ts); 6476 if (info->child_tidptr) 6477 put_user_u32(info->tid, info->child_tidptr); 6478 if (info->parent_tidptr) 6479 put_user_u32(info->tid, info->parent_tidptr); 6480 qemu_guest_random_seed_thread_part2(cpu->random_seed); 6481 /* Enable signals. */ 6482 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6483 /* Signal to the parent that we're ready. */ 6484 pthread_mutex_lock(&info->mutex); 6485 pthread_cond_broadcast(&info->cond); 6486 pthread_mutex_unlock(&info->mutex); 6487 /* Wait until the parent has finished initializing the tls state. */ 6488 pthread_mutex_lock(&clone_lock); 6489 pthread_mutex_unlock(&clone_lock); 6490 cpu_loop(env); 6491 /* never exits */ 6492 return NULL; 6493 } 6494 6495 /* do_fork() Must return host values and target errnos (unlike most 6496 do_*() functions). */ 6497 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6498 abi_ulong parent_tidptr, target_ulong newtls, 6499 abi_ulong child_tidptr) 6500 { 6501 CPUState *cpu = env_cpu(env); 6502 int ret; 6503 TaskState *ts; 6504 CPUState *new_cpu; 6505 CPUArchState *new_env; 6506 sigset_t sigmask; 6507 6508 flags &= ~CLONE_IGNORED_FLAGS; 6509 6510 /* Emulate vfork() with fork() */ 6511 if (flags & CLONE_VFORK) 6512 flags &= ~(CLONE_VFORK | CLONE_VM); 6513 6514 if (flags & CLONE_VM) { 6515 TaskState *parent_ts = (TaskState *)cpu->opaque; 6516 new_thread_info info; 6517 pthread_attr_t attr; 6518 6519 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6520 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6521 return -TARGET_EINVAL; 6522 } 6523 6524 ts = g_new0(TaskState, 1); 6525 init_task_state(ts); 6526 6527 /* Grab a mutex so that thread setup appears atomic. */ 6528 pthread_mutex_lock(&clone_lock); 6529 6530 /* 6531 * If this is our first additional thread, we need to ensure we 6532 * generate code for parallel execution and flush old translations. 6533 * Do this now so that the copy gets CF_PARALLEL too. 6534 */ 6535 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 6536 cpu->tcg_cflags |= CF_PARALLEL; 6537 tb_flush(cpu); 6538 } 6539 6540 /* we create a new CPU instance. */ 6541 new_env = cpu_copy(env); 6542 /* Init regs that differ from the parent. */ 6543 cpu_clone_regs_child(new_env, newsp, flags); 6544 cpu_clone_regs_parent(env, flags); 6545 new_cpu = env_cpu(new_env); 6546 new_cpu->opaque = ts; 6547 ts->bprm = parent_ts->bprm; 6548 ts->info = parent_ts->info; 6549 ts->signal_mask = parent_ts->signal_mask; 6550 6551 if (flags & CLONE_CHILD_CLEARTID) { 6552 ts->child_tidptr = child_tidptr; 6553 } 6554 6555 if (flags & CLONE_SETTLS) { 6556 cpu_set_tls (new_env, newtls); 6557 } 6558 6559 memset(&info, 0, sizeof(info)); 6560 pthread_mutex_init(&info.mutex, NULL); 6561 pthread_mutex_lock(&info.mutex); 6562 pthread_cond_init(&info.cond, NULL); 6563 info.env = new_env; 6564 if (flags & CLONE_CHILD_SETTID) { 6565 info.child_tidptr = child_tidptr; 6566 } 6567 if (flags & CLONE_PARENT_SETTID) { 6568 info.parent_tidptr = parent_tidptr; 6569 } 6570 6571 ret = pthread_attr_init(&attr); 6572 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6573 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6574 /* It is not safe to deliver signals until the child has finished 6575 initializing, so temporarily block all signals. */ 6576 sigfillset(&sigmask); 6577 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6578 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6579 6580 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6581 /* TODO: Free new CPU state if thread creation failed. */ 6582 6583 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6584 pthread_attr_destroy(&attr); 6585 if (ret == 0) { 6586 /* Wait for the child to initialize. */ 6587 pthread_cond_wait(&info.cond, &info.mutex); 6588 ret = info.tid; 6589 } else { 6590 ret = -1; 6591 } 6592 pthread_mutex_unlock(&info.mutex); 6593 pthread_cond_destroy(&info.cond); 6594 pthread_mutex_destroy(&info.mutex); 6595 pthread_mutex_unlock(&clone_lock); 6596 } else { 6597 /* if no CLONE_VM, we consider it is a fork */ 6598 if (flags & CLONE_INVALID_FORK_FLAGS) { 6599 return -TARGET_EINVAL; 6600 } 6601 6602 /* We can't support custom termination signals */ 6603 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6604 return -TARGET_EINVAL; 6605 } 6606 6607 if (block_signals()) { 6608 return -QEMU_ERESTARTSYS; 6609 } 6610 6611 fork_start(); 6612 ret = fork(); 6613 if (ret == 0) { 6614 /* Child Process. */ 6615 cpu_clone_regs_child(env, newsp, flags); 6616 fork_end(1); 6617 /* There is a race condition here. The parent process could 6618 theoretically read the TID in the child process before the child 6619 tid is set. This would require using either ptrace 6620 (not implemented) or having *_tidptr to point at a shared memory 6621 mapping. We can't repeat the spinlock hack used above because 6622 the child process gets its own copy of the lock. */ 6623 if (flags & CLONE_CHILD_SETTID) 6624 put_user_u32(sys_gettid(), child_tidptr); 6625 if (flags & CLONE_PARENT_SETTID) 6626 put_user_u32(sys_gettid(), parent_tidptr); 6627 ts = (TaskState *)cpu->opaque; 6628 if (flags & CLONE_SETTLS) 6629 cpu_set_tls (env, newtls); 6630 if (flags & CLONE_CHILD_CLEARTID) 6631 ts->child_tidptr = child_tidptr; 6632 } else { 6633 cpu_clone_regs_parent(env, flags); 6634 fork_end(0); 6635 } 6636 } 6637 return ret; 6638 } 6639 6640 /* warning : doesn't handle linux specific flags... */ 6641 static int target_to_host_fcntl_cmd(int cmd) 6642 { 6643 int ret; 6644 6645 switch(cmd) { 6646 case TARGET_F_DUPFD: 6647 case TARGET_F_GETFD: 6648 case TARGET_F_SETFD: 6649 case TARGET_F_GETFL: 6650 case TARGET_F_SETFL: 6651 case TARGET_F_OFD_GETLK: 6652 case TARGET_F_OFD_SETLK: 6653 case TARGET_F_OFD_SETLKW: 6654 ret = cmd; 6655 break; 6656 case TARGET_F_GETLK: 6657 ret = F_GETLK64; 6658 break; 6659 case TARGET_F_SETLK: 6660 ret = F_SETLK64; 6661 break; 6662 case TARGET_F_SETLKW: 6663 ret = F_SETLKW64; 6664 break; 6665 case TARGET_F_GETOWN: 6666 ret = F_GETOWN; 6667 break; 6668 case TARGET_F_SETOWN: 6669 ret = F_SETOWN; 6670 break; 6671 case TARGET_F_GETSIG: 6672 ret = F_GETSIG; 6673 break; 6674 case TARGET_F_SETSIG: 6675 ret = F_SETSIG; 6676 break; 6677 #if TARGET_ABI_BITS == 32 6678 case TARGET_F_GETLK64: 6679 ret = F_GETLK64; 6680 break; 6681 case TARGET_F_SETLK64: 6682 ret = F_SETLK64; 6683 break; 6684 case TARGET_F_SETLKW64: 6685 ret = F_SETLKW64; 6686 break; 6687 #endif 6688 case TARGET_F_SETLEASE: 6689 ret = F_SETLEASE; 6690 break; 6691 case TARGET_F_GETLEASE: 6692 ret = F_GETLEASE; 6693 break; 6694 #ifdef F_DUPFD_CLOEXEC 6695 case TARGET_F_DUPFD_CLOEXEC: 6696 ret = F_DUPFD_CLOEXEC; 6697 break; 6698 #endif 6699 case TARGET_F_NOTIFY: 6700 ret = F_NOTIFY; 6701 break; 6702 #ifdef F_GETOWN_EX 6703 case TARGET_F_GETOWN_EX: 6704 ret = F_GETOWN_EX; 6705 break; 6706 #endif 6707 #ifdef F_SETOWN_EX 6708 case TARGET_F_SETOWN_EX: 6709 ret = F_SETOWN_EX; 6710 break; 6711 #endif 6712 #ifdef F_SETPIPE_SZ 6713 case TARGET_F_SETPIPE_SZ: 6714 ret = F_SETPIPE_SZ; 6715 break; 6716 case TARGET_F_GETPIPE_SZ: 6717 ret = F_GETPIPE_SZ; 6718 break; 6719 #endif 6720 #ifdef F_ADD_SEALS 6721 case TARGET_F_ADD_SEALS: 6722 ret = F_ADD_SEALS; 6723 break; 6724 case TARGET_F_GET_SEALS: 6725 ret = F_GET_SEALS; 6726 break; 6727 #endif 6728 default: 6729 ret = -TARGET_EINVAL; 6730 break; 6731 } 6732 6733 #if defined(__powerpc64__) 6734 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6735 * is not supported by kernel. The glibc fcntl call actually adjusts 6736 * them to 5, 6 and 7 before making the syscall(). Since we make the 6737 * syscall directly, adjust to what is supported by the kernel. 6738 */ 6739 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6740 ret -= F_GETLK64 - 5; 6741 } 6742 #endif 6743 6744 return ret; 6745 } 6746 6747 #define FLOCK_TRANSTBL \ 6748 switch (type) { \ 6749 TRANSTBL_CONVERT(F_RDLCK); \ 6750 TRANSTBL_CONVERT(F_WRLCK); \ 6751 TRANSTBL_CONVERT(F_UNLCK); \ 6752 } 6753 6754 static int target_to_host_flock(int type) 6755 { 6756 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6757 FLOCK_TRANSTBL 6758 #undef TRANSTBL_CONVERT 6759 return -TARGET_EINVAL; 6760 } 6761 6762 static int host_to_target_flock(int type) 6763 { 6764 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6765 FLOCK_TRANSTBL 6766 #undef TRANSTBL_CONVERT 6767 /* if we don't know how to convert the value coming 6768 * from the host we copy to the target field as-is 6769 */ 6770 return type; 6771 } 6772 6773 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6774 abi_ulong target_flock_addr) 6775 { 6776 struct target_flock *target_fl; 6777 int l_type; 6778 6779 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6780 return -TARGET_EFAULT; 6781 } 6782 6783 __get_user(l_type, &target_fl->l_type); 6784 l_type = target_to_host_flock(l_type); 6785 if (l_type < 0) { 6786 return l_type; 6787 } 6788 fl->l_type = l_type; 6789 __get_user(fl->l_whence, &target_fl->l_whence); 6790 __get_user(fl->l_start, &target_fl->l_start); 6791 __get_user(fl->l_len, &target_fl->l_len); 6792 __get_user(fl->l_pid, &target_fl->l_pid); 6793 unlock_user_struct(target_fl, target_flock_addr, 0); 6794 return 0; 6795 } 6796 6797 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6798 const struct flock64 *fl) 6799 { 6800 struct target_flock *target_fl; 6801 short l_type; 6802 6803 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6804 return -TARGET_EFAULT; 6805 } 6806 6807 l_type = host_to_target_flock(fl->l_type); 6808 __put_user(l_type, &target_fl->l_type); 6809 __put_user(fl->l_whence, &target_fl->l_whence); 6810 __put_user(fl->l_start, &target_fl->l_start); 6811 __put_user(fl->l_len, &target_fl->l_len); 6812 __put_user(fl->l_pid, &target_fl->l_pid); 6813 unlock_user_struct(target_fl, target_flock_addr, 1); 6814 return 0; 6815 } 6816 6817 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6818 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6819 6820 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6821 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 6822 abi_ulong target_flock_addr) 6823 { 6824 struct target_oabi_flock64 *target_fl; 6825 int l_type; 6826 6827 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6828 return -TARGET_EFAULT; 6829 } 6830 6831 __get_user(l_type, &target_fl->l_type); 6832 l_type = target_to_host_flock(l_type); 6833 if (l_type < 0) { 6834 return l_type; 6835 } 6836 fl->l_type = l_type; 6837 __get_user(fl->l_whence, &target_fl->l_whence); 6838 __get_user(fl->l_start, &target_fl->l_start); 6839 __get_user(fl->l_len, &target_fl->l_len); 6840 __get_user(fl->l_pid, &target_fl->l_pid); 6841 unlock_user_struct(target_fl, target_flock_addr, 0); 6842 return 0; 6843 } 6844 6845 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 6846 const struct flock64 *fl) 6847 { 6848 struct target_oabi_flock64 *target_fl; 6849 short l_type; 6850 6851 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6852 return -TARGET_EFAULT; 6853 } 6854 6855 l_type = host_to_target_flock(fl->l_type); 6856 __put_user(l_type, &target_fl->l_type); 6857 __put_user(fl->l_whence, &target_fl->l_whence); 6858 __put_user(fl->l_start, &target_fl->l_start); 6859 __put_user(fl->l_len, &target_fl->l_len); 6860 __put_user(fl->l_pid, &target_fl->l_pid); 6861 unlock_user_struct(target_fl, target_flock_addr, 1); 6862 return 0; 6863 } 6864 #endif 6865 6866 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6867 abi_ulong target_flock_addr) 6868 { 6869 struct target_flock64 *target_fl; 6870 int l_type; 6871 6872 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6873 return -TARGET_EFAULT; 6874 } 6875 6876 __get_user(l_type, &target_fl->l_type); 6877 l_type = target_to_host_flock(l_type); 6878 if (l_type < 0) { 6879 return l_type; 6880 } 6881 fl->l_type = l_type; 6882 __get_user(fl->l_whence, &target_fl->l_whence); 6883 __get_user(fl->l_start, &target_fl->l_start); 6884 __get_user(fl->l_len, &target_fl->l_len); 6885 __get_user(fl->l_pid, &target_fl->l_pid); 6886 unlock_user_struct(target_fl, target_flock_addr, 0); 6887 return 0; 6888 } 6889 6890 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 6891 const struct flock64 *fl) 6892 { 6893 struct target_flock64 *target_fl; 6894 short l_type; 6895 6896 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6897 return -TARGET_EFAULT; 6898 } 6899 6900 l_type = host_to_target_flock(fl->l_type); 6901 __put_user(l_type, &target_fl->l_type); 6902 __put_user(fl->l_whence, &target_fl->l_whence); 6903 __put_user(fl->l_start, &target_fl->l_start); 6904 __put_user(fl->l_len, &target_fl->l_len); 6905 __put_user(fl->l_pid, &target_fl->l_pid); 6906 unlock_user_struct(target_fl, target_flock_addr, 1); 6907 return 0; 6908 } 6909 6910 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 6911 { 6912 struct flock64 fl64; 6913 #ifdef F_GETOWN_EX 6914 struct f_owner_ex fox; 6915 struct target_f_owner_ex *target_fox; 6916 #endif 6917 abi_long ret; 6918 int host_cmd = target_to_host_fcntl_cmd(cmd); 6919 6920 if (host_cmd == -TARGET_EINVAL) 6921 return host_cmd; 6922 6923 switch(cmd) { 6924 case TARGET_F_GETLK: 6925 ret = copy_from_user_flock(&fl64, arg); 6926 if (ret) { 6927 return ret; 6928 } 6929 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6930 if (ret == 0) { 6931 ret = copy_to_user_flock(arg, &fl64); 6932 } 6933 break; 6934 6935 case TARGET_F_SETLK: 6936 case TARGET_F_SETLKW: 6937 ret = copy_from_user_flock(&fl64, arg); 6938 if (ret) { 6939 return ret; 6940 } 6941 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6942 break; 6943 6944 case TARGET_F_GETLK64: 6945 case TARGET_F_OFD_GETLK: 6946 ret = copy_from_user_flock64(&fl64, arg); 6947 if (ret) { 6948 return ret; 6949 } 6950 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6951 if (ret == 0) { 6952 ret = copy_to_user_flock64(arg, &fl64); 6953 } 6954 break; 6955 case TARGET_F_SETLK64: 6956 case TARGET_F_SETLKW64: 6957 case TARGET_F_OFD_SETLK: 6958 case TARGET_F_OFD_SETLKW: 6959 ret = copy_from_user_flock64(&fl64, arg); 6960 if (ret) { 6961 return ret; 6962 } 6963 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6964 break; 6965 6966 case TARGET_F_GETFL: 6967 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6968 if (ret >= 0) { 6969 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 6970 } 6971 break; 6972 6973 case TARGET_F_SETFL: 6974 ret = get_errno(safe_fcntl(fd, host_cmd, 6975 target_to_host_bitmask(arg, 6976 fcntl_flags_tbl))); 6977 break; 6978 6979 #ifdef F_GETOWN_EX 6980 case TARGET_F_GETOWN_EX: 6981 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6982 if (ret >= 0) { 6983 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 6984 return -TARGET_EFAULT; 6985 target_fox->type = tswap32(fox.type); 6986 target_fox->pid = tswap32(fox.pid); 6987 unlock_user_struct(target_fox, arg, 1); 6988 } 6989 break; 6990 #endif 6991 6992 #ifdef F_SETOWN_EX 6993 case TARGET_F_SETOWN_EX: 6994 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 6995 return -TARGET_EFAULT; 6996 fox.type = tswap32(target_fox->type); 6997 fox.pid = tswap32(target_fox->pid); 6998 unlock_user_struct(target_fox, arg, 0); 6999 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7000 break; 7001 #endif 7002 7003 case TARGET_F_SETSIG: 7004 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg))); 7005 break; 7006 7007 case TARGET_F_GETSIG: 7008 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg))); 7009 break; 7010 7011 case TARGET_F_SETOWN: 7012 case TARGET_F_GETOWN: 7013 case TARGET_F_SETLEASE: 7014 case TARGET_F_GETLEASE: 7015 case TARGET_F_SETPIPE_SZ: 7016 case TARGET_F_GETPIPE_SZ: 7017 case TARGET_F_ADD_SEALS: 7018 case TARGET_F_GET_SEALS: 7019 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7020 break; 7021 7022 default: 7023 ret = get_errno(safe_fcntl(fd, cmd, arg)); 7024 break; 7025 } 7026 return ret; 7027 } 7028 7029 #ifdef USE_UID16 7030 7031 static inline int high2lowuid(int uid) 7032 { 7033 if (uid > 65535) 7034 return 65534; 7035 else 7036 return uid; 7037 } 7038 7039 static inline int high2lowgid(int gid) 7040 { 7041 if (gid > 65535) 7042 return 65534; 7043 else 7044 return gid; 7045 } 7046 7047 static inline int low2highuid(int uid) 7048 { 7049 if ((int16_t)uid == -1) 7050 return -1; 7051 else 7052 return uid; 7053 } 7054 7055 static inline int low2highgid(int gid) 7056 { 7057 if ((int16_t)gid == -1) 7058 return -1; 7059 else 7060 return gid; 7061 } 7062 static inline int tswapid(int id) 7063 { 7064 return tswap16(id); 7065 } 7066 7067 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 7068 7069 #else /* !USE_UID16 */ 7070 static inline int high2lowuid(int uid) 7071 { 7072 return uid; 7073 } 7074 static inline int high2lowgid(int gid) 7075 { 7076 return gid; 7077 } 7078 static inline int low2highuid(int uid) 7079 { 7080 return uid; 7081 } 7082 static inline int low2highgid(int gid) 7083 { 7084 return gid; 7085 } 7086 static inline int tswapid(int id) 7087 { 7088 return tswap32(id); 7089 } 7090 7091 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 7092 7093 #endif /* USE_UID16 */ 7094 7095 /* We must do direct syscalls for setting UID/GID, because we want to 7096 * implement the Linux system call semantics of "change only for this thread", 7097 * not the libc/POSIX semantics of "change for all threads in process". 7098 * (See http://ewontfix.com/17/ for more details.) 7099 * We use the 32-bit version of the syscalls if present; if it is not 7100 * then either the host architecture supports 32-bit UIDs natively with 7101 * the standard syscall, or the 16-bit UID is the best we can do. 7102 */ 7103 #ifdef __NR_setuid32 7104 #define __NR_sys_setuid __NR_setuid32 7105 #else 7106 #define __NR_sys_setuid __NR_setuid 7107 #endif 7108 #ifdef __NR_setgid32 7109 #define __NR_sys_setgid __NR_setgid32 7110 #else 7111 #define __NR_sys_setgid __NR_setgid 7112 #endif 7113 #ifdef __NR_setresuid32 7114 #define __NR_sys_setresuid __NR_setresuid32 7115 #else 7116 #define __NR_sys_setresuid __NR_setresuid 7117 #endif 7118 #ifdef __NR_setresgid32 7119 #define __NR_sys_setresgid __NR_setresgid32 7120 #else 7121 #define __NR_sys_setresgid __NR_setresgid 7122 #endif 7123 7124 _syscall1(int, sys_setuid, uid_t, uid) 7125 _syscall1(int, sys_setgid, gid_t, gid) 7126 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 7127 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 7128 7129 void syscall_init(void) 7130 { 7131 IOCTLEntry *ie; 7132 const argtype *arg_type; 7133 int size; 7134 7135 thunk_init(STRUCT_MAX); 7136 7137 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 7138 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 7139 #include "syscall_types.h" 7140 #undef STRUCT 7141 #undef STRUCT_SPECIAL 7142 7143 /* we patch the ioctl size if necessary. We rely on the fact that 7144 no ioctl has all the bits at '1' in the size field */ 7145 ie = ioctl_entries; 7146 while (ie->target_cmd != 0) { 7147 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 7148 TARGET_IOC_SIZEMASK) { 7149 arg_type = ie->arg_type; 7150 if (arg_type[0] != TYPE_PTR) { 7151 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 7152 ie->target_cmd); 7153 exit(1); 7154 } 7155 arg_type++; 7156 size = thunk_type_size(arg_type, 0); 7157 ie->target_cmd = (ie->target_cmd & 7158 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 7159 (size << TARGET_IOC_SIZESHIFT); 7160 } 7161 7162 /* automatic consistency check if same arch */ 7163 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 7164 (defined(__x86_64__) && defined(TARGET_X86_64)) 7165 if (unlikely(ie->target_cmd != ie->host_cmd)) { 7166 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 7167 ie->name, ie->target_cmd, ie->host_cmd); 7168 } 7169 #endif 7170 ie++; 7171 } 7172 } 7173 7174 #ifdef TARGET_NR_truncate64 7175 static inline abi_long target_truncate64(void *cpu_env, const char *arg1, 7176 abi_long arg2, 7177 abi_long arg3, 7178 abi_long arg4) 7179 { 7180 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 7181 arg2 = arg3; 7182 arg3 = arg4; 7183 } 7184 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 7185 } 7186 #endif 7187 7188 #ifdef TARGET_NR_ftruncate64 7189 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, 7190 abi_long arg2, 7191 abi_long arg3, 7192 abi_long arg4) 7193 { 7194 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 7195 arg2 = arg3; 7196 arg3 = arg4; 7197 } 7198 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 7199 } 7200 #endif 7201 7202 #if defined(TARGET_NR_timer_settime) || \ 7203 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 7204 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its, 7205 abi_ulong target_addr) 7206 { 7207 if (target_to_host_timespec(&host_its->it_interval, target_addr + 7208 offsetof(struct target_itimerspec, 7209 it_interval)) || 7210 target_to_host_timespec(&host_its->it_value, target_addr + 7211 offsetof(struct target_itimerspec, 7212 it_value))) { 7213 return -TARGET_EFAULT; 7214 } 7215 7216 return 0; 7217 } 7218 #endif 7219 7220 #if defined(TARGET_NR_timer_settime64) || \ 7221 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) 7222 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its, 7223 abi_ulong target_addr) 7224 { 7225 if (target_to_host_timespec64(&host_its->it_interval, target_addr + 7226 offsetof(struct target__kernel_itimerspec, 7227 it_interval)) || 7228 target_to_host_timespec64(&host_its->it_value, target_addr + 7229 offsetof(struct target__kernel_itimerspec, 7230 it_value))) { 7231 return -TARGET_EFAULT; 7232 } 7233 7234 return 0; 7235 } 7236 #endif 7237 7238 #if ((defined(TARGET_NR_timerfd_gettime) || \ 7239 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 7240 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 7241 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 7242 struct itimerspec *host_its) 7243 { 7244 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7245 it_interval), 7246 &host_its->it_interval) || 7247 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7248 it_value), 7249 &host_its->it_value)) { 7250 return -TARGET_EFAULT; 7251 } 7252 return 0; 7253 } 7254 #endif 7255 7256 #if ((defined(TARGET_NR_timerfd_gettime64) || \ 7257 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \ 7258 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64) 7259 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr, 7260 struct itimerspec *host_its) 7261 { 7262 if (host_to_target_timespec64(target_addr + 7263 offsetof(struct target__kernel_itimerspec, 7264 it_interval), 7265 &host_its->it_interval) || 7266 host_to_target_timespec64(target_addr + 7267 offsetof(struct target__kernel_itimerspec, 7268 it_value), 7269 &host_its->it_value)) { 7270 return -TARGET_EFAULT; 7271 } 7272 return 0; 7273 } 7274 #endif 7275 7276 #if defined(TARGET_NR_adjtimex) || \ 7277 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 7278 static inline abi_long target_to_host_timex(struct timex *host_tx, 7279 abi_long target_addr) 7280 { 7281 struct target_timex *target_tx; 7282 7283 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7284 return -TARGET_EFAULT; 7285 } 7286 7287 __get_user(host_tx->modes, &target_tx->modes); 7288 __get_user(host_tx->offset, &target_tx->offset); 7289 __get_user(host_tx->freq, &target_tx->freq); 7290 __get_user(host_tx->maxerror, &target_tx->maxerror); 7291 __get_user(host_tx->esterror, &target_tx->esterror); 7292 __get_user(host_tx->status, &target_tx->status); 7293 __get_user(host_tx->constant, &target_tx->constant); 7294 __get_user(host_tx->precision, &target_tx->precision); 7295 __get_user(host_tx->tolerance, &target_tx->tolerance); 7296 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7297 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7298 __get_user(host_tx->tick, &target_tx->tick); 7299 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7300 __get_user(host_tx->jitter, &target_tx->jitter); 7301 __get_user(host_tx->shift, &target_tx->shift); 7302 __get_user(host_tx->stabil, &target_tx->stabil); 7303 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7304 __get_user(host_tx->calcnt, &target_tx->calcnt); 7305 __get_user(host_tx->errcnt, &target_tx->errcnt); 7306 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7307 __get_user(host_tx->tai, &target_tx->tai); 7308 7309 unlock_user_struct(target_tx, target_addr, 0); 7310 return 0; 7311 } 7312 7313 static inline abi_long host_to_target_timex(abi_long target_addr, 7314 struct timex *host_tx) 7315 { 7316 struct target_timex *target_tx; 7317 7318 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7319 return -TARGET_EFAULT; 7320 } 7321 7322 __put_user(host_tx->modes, &target_tx->modes); 7323 __put_user(host_tx->offset, &target_tx->offset); 7324 __put_user(host_tx->freq, &target_tx->freq); 7325 __put_user(host_tx->maxerror, &target_tx->maxerror); 7326 __put_user(host_tx->esterror, &target_tx->esterror); 7327 __put_user(host_tx->status, &target_tx->status); 7328 __put_user(host_tx->constant, &target_tx->constant); 7329 __put_user(host_tx->precision, &target_tx->precision); 7330 __put_user(host_tx->tolerance, &target_tx->tolerance); 7331 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7332 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7333 __put_user(host_tx->tick, &target_tx->tick); 7334 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7335 __put_user(host_tx->jitter, &target_tx->jitter); 7336 __put_user(host_tx->shift, &target_tx->shift); 7337 __put_user(host_tx->stabil, &target_tx->stabil); 7338 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7339 __put_user(host_tx->calcnt, &target_tx->calcnt); 7340 __put_user(host_tx->errcnt, &target_tx->errcnt); 7341 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7342 __put_user(host_tx->tai, &target_tx->tai); 7343 7344 unlock_user_struct(target_tx, target_addr, 1); 7345 return 0; 7346 } 7347 #endif 7348 7349 7350 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 7351 static inline abi_long target_to_host_timex64(struct timex *host_tx, 7352 abi_long target_addr) 7353 { 7354 struct target__kernel_timex *target_tx; 7355 7356 if (copy_from_user_timeval64(&host_tx->time, target_addr + 7357 offsetof(struct target__kernel_timex, 7358 time))) { 7359 return -TARGET_EFAULT; 7360 } 7361 7362 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7363 return -TARGET_EFAULT; 7364 } 7365 7366 __get_user(host_tx->modes, &target_tx->modes); 7367 __get_user(host_tx->offset, &target_tx->offset); 7368 __get_user(host_tx->freq, &target_tx->freq); 7369 __get_user(host_tx->maxerror, &target_tx->maxerror); 7370 __get_user(host_tx->esterror, &target_tx->esterror); 7371 __get_user(host_tx->status, &target_tx->status); 7372 __get_user(host_tx->constant, &target_tx->constant); 7373 __get_user(host_tx->precision, &target_tx->precision); 7374 __get_user(host_tx->tolerance, &target_tx->tolerance); 7375 __get_user(host_tx->tick, &target_tx->tick); 7376 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7377 __get_user(host_tx->jitter, &target_tx->jitter); 7378 __get_user(host_tx->shift, &target_tx->shift); 7379 __get_user(host_tx->stabil, &target_tx->stabil); 7380 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7381 __get_user(host_tx->calcnt, &target_tx->calcnt); 7382 __get_user(host_tx->errcnt, &target_tx->errcnt); 7383 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7384 __get_user(host_tx->tai, &target_tx->tai); 7385 7386 unlock_user_struct(target_tx, target_addr, 0); 7387 return 0; 7388 } 7389 7390 static inline abi_long host_to_target_timex64(abi_long target_addr, 7391 struct timex *host_tx) 7392 { 7393 struct target__kernel_timex *target_tx; 7394 7395 if (copy_to_user_timeval64(target_addr + 7396 offsetof(struct target__kernel_timex, time), 7397 &host_tx->time)) { 7398 return -TARGET_EFAULT; 7399 } 7400 7401 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7402 return -TARGET_EFAULT; 7403 } 7404 7405 __put_user(host_tx->modes, &target_tx->modes); 7406 __put_user(host_tx->offset, &target_tx->offset); 7407 __put_user(host_tx->freq, &target_tx->freq); 7408 __put_user(host_tx->maxerror, &target_tx->maxerror); 7409 __put_user(host_tx->esterror, &target_tx->esterror); 7410 __put_user(host_tx->status, &target_tx->status); 7411 __put_user(host_tx->constant, &target_tx->constant); 7412 __put_user(host_tx->precision, &target_tx->precision); 7413 __put_user(host_tx->tolerance, &target_tx->tolerance); 7414 __put_user(host_tx->tick, &target_tx->tick); 7415 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7416 __put_user(host_tx->jitter, &target_tx->jitter); 7417 __put_user(host_tx->shift, &target_tx->shift); 7418 __put_user(host_tx->stabil, &target_tx->stabil); 7419 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7420 __put_user(host_tx->calcnt, &target_tx->calcnt); 7421 __put_user(host_tx->errcnt, &target_tx->errcnt); 7422 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7423 __put_user(host_tx->tai, &target_tx->tai); 7424 7425 unlock_user_struct(target_tx, target_addr, 1); 7426 return 0; 7427 } 7428 #endif 7429 7430 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID 7431 #define sigev_notify_thread_id _sigev_un._tid 7432 #endif 7433 7434 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7435 abi_ulong target_addr) 7436 { 7437 struct target_sigevent *target_sevp; 7438 7439 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7440 return -TARGET_EFAULT; 7441 } 7442 7443 /* This union is awkward on 64 bit systems because it has a 32 bit 7444 * integer and a pointer in it; we follow the conversion approach 7445 * used for handling sigval types in signal.c so the guest should get 7446 * the correct value back even if we did a 64 bit byteswap and it's 7447 * using the 32 bit integer. 7448 */ 7449 host_sevp->sigev_value.sival_ptr = 7450 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7451 host_sevp->sigev_signo = 7452 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7453 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7454 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid); 7455 7456 unlock_user_struct(target_sevp, target_addr, 1); 7457 return 0; 7458 } 7459 7460 #if defined(TARGET_NR_mlockall) 7461 static inline int target_to_host_mlockall_arg(int arg) 7462 { 7463 int result = 0; 7464 7465 if (arg & TARGET_MCL_CURRENT) { 7466 result |= MCL_CURRENT; 7467 } 7468 if (arg & TARGET_MCL_FUTURE) { 7469 result |= MCL_FUTURE; 7470 } 7471 #ifdef MCL_ONFAULT 7472 if (arg & TARGET_MCL_ONFAULT) { 7473 result |= MCL_ONFAULT; 7474 } 7475 #endif 7476 7477 return result; 7478 } 7479 #endif 7480 7481 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 7482 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 7483 defined(TARGET_NR_newfstatat)) 7484 static inline abi_long host_to_target_stat64(void *cpu_env, 7485 abi_ulong target_addr, 7486 struct stat *host_st) 7487 { 7488 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7489 if (((CPUARMState *)cpu_env)->eabi) { 7490 struct target_eabi_stat64 *target_st; 7491 7492 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7493 return -TARGET_EFAULT; 7494 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7495 __put_user(host_st->st_dev, &target_st->st_dev); 7496 __put_user(host_st->st_ino, &target_st->st_ino); 7497 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7498 __put_user(host_st->st_ino, &target_st->__st_ino); 7499 #endif 7500 __put_user(host_st->st_mode, &target_st->st_mode); 7501 __put_user(host_st->st_nlink, &target_st->st_nlink); 7502 __put_user(host_st->st_uid, &target_st->st_uid); 7503 __put_user(host_st->st_gid, &target_st->st_gid); 7504 __put_user(host_st->st_rdev, &target_st->st_rdev); 7505 __put_user(host_st->st_size, &target_st->st_size); 7506 __put_user(host_st->st_blksize, &target_st->st_blksize); 7507 __put_user(host_st->st_blocks, &target_st->st_blocks); 7508 __put_user(host_st->st_atime, &target_st->target_st_atime); 7509 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7510 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7511 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7512 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7513 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7514 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7515 #endif 7516 unlock_user_struct(target_st, target_addr, 1); 7517 } else 7518 #endif 7519 { 7520 #if defined(TARGET_HAS_STRUCT_STAT64) 7521 struct target_stat64 *target_st; 7522 #else 7523 struct target_stat *target_st; 7524 #endif 7525 7526 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7527 return -TARGET_EFAULT; 7528 memset(target_st, 0, sizeof(*target_st)); 7529 __put_user(host_st->st_dev, &target_st->st_dev); 7530 __put_user(host_st->st_ino, &target_st->st_ino); 7531 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7532 __put_user(host_st->st_ino, &target_st->__st_ino); 7533 #endif 7534 __put_user(host_st->st_mode, &target_st->st_mode); 7535 __put_user(host_st->st_nlink, &target_st->st_nlink); 7536 __put_user(host_st->st_uid, &target_st->st_uid); 7537 __put_user(host_st->st_gid, &target_st->st_gid); 7538 __put_user(host_st->st_rdev, &target_st->st_rdev); 7539 /* XXX: better use of kernel struct */ 7540 __put_user(host_st->st_size, &target_st->st_size); 7541 __put_user(host_st->st_blksize, &target_st->st_blksize); 7542 __put_user(host_st->st_blocks, &target_st->st_blocks); 7543 __put_user(host_st->st_atime, &target_st->target_st_atime); 7544 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7545 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7546 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7547 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7548 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7549 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7550 #endif 7551 unlock_user_struct(target_st, target_addr, 1); 7552 } 7553 7554 return 0; 7555 } 7556 #endif 7557 7558 #if defined(TARGET_NR_statx) && defined(__NR_statx) 7559 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 7560 abi_ulong target_addr) 7561 { 7562 struct target_statx *target_stx; 7563 7564 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 7565 return -TARGET_EFAULT; 7566 } 7567 memset(target_stx, 0, sizeof(*target_stx)); 7568 7569 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 7570 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 7571 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 7572 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 7573 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 7574 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 7575 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 7576 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 7577 __put_user(host_stx->stx_size, &target_stx->stx_size); 7578 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 7579 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 7580 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 7581 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 7582 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 7583 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 7584 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 7585 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 7586 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 7587 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 7588 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 7589 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 7590 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 7591 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 7592 7593 unlock_user_struct(target_stx, target_addr, 1); 7594 7595 return 0; 7596 } 7597 #endif 7598 7599 static int do_sys_futex(int *uaddr, int op, int val, 7600 const struct timespec *timeout, int *uaddr2, 7601 int val3) 7602 { 7603 #if HOST_LONG_BITS == 64 7604 #if defined(__NR_futex) 7605 /* always a 64-bit time_t, it doesn't define _time64 version */ 7606 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7607 7608 #endif 7609 #else /* HOST_LONG_BITS == 64 */ 7610 #if defined(__NR_futex_time64) 7611 if (sizeof(timeout->tv_sec) == 8) { 7612 /* _time64 function on 32bit arch */ 7613 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 7614 } 7615 #endif 7616 #if defined(__NR_futex) 7617 /* old function on 32bit arch */ 7618 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7619 #endif 7620 #endif /* HOST_LONG_BITS == 64 */ 7621 g_assert_not_reached(); 7622 } 7623 7624 static int do_safe_futex(int *uaddr, int op, int val, 7625 const struct timespec *timeout, int *uaddr2, 7626 int val3) 7627 { 7628 #if HOST_LONG_BITS == 64 7629 #if defined(__NR_futex) 7630 /* always a 64-bit time_t, it doesn't define _time64 version */ 7631 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7632 #endif 7633 #else /* HOST_LONG_BITS == 64 */ 7634 #if defined(__NR_futex_time64) 7635 if (sizeof(timeout->tv_sec) == 8) { 7636 /* _time64 function on 32bit arch */ 7637 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 7638 val3)); 7639 } 7640 #endif 7641 #if defined(__NR_futex) 7642 /* old function on 32bit arch */ 7643 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7644 #endif 7645 #endif /* HOST_LONG_BITS == 64 */ 7646 return -TARGET_ENOSYS; 7647 } 7648 7649 /* ??? Using host futex calls even when target atomic operations 7650 are not really atomic probably breaks things. However implementing 7651 futexes locally would make futexes shared between multiple processes 7652 tricky. However they're probably useless because guest atomic 7653 operations won't work either. */ 7654 #if defined(TARGET_NR_futex) 7655 static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val, 7656 target_ulong timeout, target_ulong uaddr2, int val3) 7657 { 7658 struct timespec ts, *pts; 7659 int base_op; 7660 7661 /* ??? We assume FUTEX_* constants are the same on both host 7662 and target. */ 7663 #ifdef FUTEX_CMD_MASK 7664 base_op = op & FUTEX_CMD_MASK; 7665 #else 7666 base_op = op; 7667 #endif 7668 switch (base_op) { 7669 case FUTEX_WAIT: 7670 case FUTEX_WAIT_BITSET: 7671 if (timeout) { 7672 pts = &ts; 7673 target_to_host_timespec(pts, timeout); 7674 } else { 7675 pts = NULL; 7676 } 7677 return do_safe_futex(g2h(cpu, uaddr), 7678 op, tswap32(val), pts, NULL, val3); 7679 case FUTEX_WAKE: 7680 return do_safe_futex(g2h(cpu, uaddr), 7681 op, val, NULL, NULL, 0); 7682 case FUTEX_FD: 7683 return do_safe_futex(g2h(cpu, uaddr), 7684 op, val, NULL, NULL, 0); 7685 case FUTEX_REQUEUE: 7686 case FUTEX_CMP_REQUEUE: 7687 case FUTEX_WAKE_OP: 7688 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7689 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7690 But the prototype takes a `struct timespec *'; insert casts 7691 to satisfy the compiler. We do not need to tswap TIMEOUT 7692 since it's not compared to guest memory. */ 7693 pts = (struct timespec *)(uintptr_t) timeout; 7694 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), 7695 (base_op == FUTEX_CMP_REQUEUE 7696 ? tswap32(val3) : val3)); 7697 default: 7698 return -TARGET_ENOSYS; 7699 } 7700 } 7701 #endif 7702 7703 #if defined(TARGET_NR_futex_time64) 7704 static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op, 7705 int val, target_ulong timeout, 7706 target_ulong uaddr2, int val3) 7707 { 7708 struct timespec ts, *pts; 7709 int base_op; 7710 7711 /* ??? We assume FUTEX_* constants are the same on both host 7712 and target. */ 7713 #ifdef FUTEX_CMD_MASK 7714 base_op = op & FUTEX_CMD_MASK; 7715 #else 7716 base_op = op; 7717 #endif 7718 switch (base_op) { 7719 case FUTEX_WAIT: 7720 case FUTEX_WAIT_BITSET: 7721 if (timeout) { 7722 pts = &ts; 7723 if (target_to_host_timespec64(pts, timeout)) { 7724 return -TARGET_EFAULT; 7725 } 7726 } else { 7727 pts = NULL; 7728 } 7729 return do_safe_futex(g2h(cpu, uaddr), op, 7730 tswap32(val), pts, NULL, val3); 7731 case FUTEX_WAKE: 7732 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); 7733 case FUTEX_FD: 7734 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); 7735 case FUTEX_REQUEUE: 7736 case FUTEX_CMP_REQUEUE: 7737 case FUTEX_WAKE_OP: 7738 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7739 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7740 But the prototype takes a `struct timespec *'; insert casts 7741 to satisfy the compiler. We do not need to tswap TIMEOUT 7742 since it's not compared to guest memory. */ 7743 pts = (struct timespec *)(uintptr_t) timeout; 7744 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), 7745 (base_op == FUTEX_CMP_REQUEUE 7746 ? tswap32(val3) : val3)); 7747 default: 7748 return -TARGET_ENOSYS; 7749 } 7750 } 7751 #endif 7752 7753 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7754 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7755 abi_long handle, abi_long mount_id, 7756 abi_long flags) 7757 { 7758 struct file_handle *target_fh; 7759 struct file_handle *fh; 7760 int mid = 0; 7761 abi_long ret; 7762 char *name; 7763 unsigned int size, total_size; 7764 7765 if (get_user_s32(size, handle)) { 7766 return -TARGET_EFAULT; 7767 } 7768 7769 name = lock_user_string(pathname); 7770 if (!name) { 7771 return -TARGET_EFAULT; 7772 } 7773 7774 total_size = sizeof(struct file_handle) + size; 7775 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7776 if (!target_fh) { 7777 unlock_user(name, pathname, 0); 7778 return -TARGET_EFAULT; 7779 } 7780 7781 fh = g_malloc0(total_size); 7782 fh->handle_bytes = size; 7783 7784 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7785 unlock_user(name, pathname, 0); 7786 7787 /* man name_to_handle_at(2): 7788 * Other than the use of the handle_bytes field, the caller should treat 7789 * the file_handle structure as an opaque data type 7790 */ 7791 7792 memcpy(target_fh, fh, total_size); 7793 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7794 target_fh->handle_type = tswap32(fh->handle_type); 7795 g_free(fh); 7796 unlock_user(target_fh, handle, total_size); 7797 7798 if (put_user_s32(mid, mount_id)) { 7799 return -TARGET_EFAULT; 7800 } 7801 7802 return ret; 7803 7804 } 7805 #endif 7806 7807 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7808 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7809 abi_long flags) 7810 { 7811 struct file_handle *target_fh; 7812 struct file_handle *fh; 7813 unsigned int size, total_size; 7814 abi_long ret; 7815 7816 if (get_user_s32(size, handle)) { 7817 return -TARGET_EFAULT; 7818 } 7819 7820 total_size = sizeof(struct file_handle) + size; 7821 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7822 if (!target_fh) { 7823 return -TARGET_EFAULT; 7824 } 7825 7826 fh = g_memdup(target_fh, total_size); 7827 fh->handle_bytes = size; 7828 fh->handle_type = tswap32(target_fh->handle_type); 7829 7830 ret = get_errno(open_by_handle_at(mount_fd, fh, 7831 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7832 7833 g_free(fh); 7834 7835 unlock_user(target_fh, handle, total_size); 7836 7837 return ret; 7838 } 7839 #endif 7840 7841 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7842 7843 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7844 { 7845 int host_flags; 7846 target_sigset_t *target_mask; 7847 sigset_t host_mask; 7848 abi_long ret; 7849 7850 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 7851 return -TARGET_EINVAL; 7852 } 7853 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7854 return -TARGET_EFAULT; 7855 } 7856 7857 target_to_host_sigset(&host_mask, target_mask); 7858 7859 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7860 7861 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7862 if (ret >= 0) { 7863 fd_trans_register(ret, &target_signalfd_trans); 7864 } 7865 7866 unlock_user_struct(target_mask, mask, 0); 7867 7868 return ret; 7869 } 7870 #endif 7871 7872 /* Map host to target signal numbers for the wait family of syscalls. 7873 Assume all other status bits are the same. */ 7874 int host_to_target_waitstatus(int status) 7875 { 7876 if (WIFSIGNALED(status)) { 7877 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7878 } 7879 if (WIFSTOPPED(status)) { 7880 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7881 | (status & 0xff); 7882 } 7883 return status; 7884 } 7885 7886 static int open_self_cmdline(void *cpu_env, int fd) 7887 { 7888 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7889 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7890 int i; 7891 7892 for (i = 0; i < bprm->argc; i++) { 7893 size_t len = strlen(bprm->argv[i]) + 1; 7894 7895 if (write(fd, bprm->argv[i], len) != len) { 7896 return -1; 7897 } 7898 } 7899 7900 return 0; 7901 } 7902 7903 static int open_self_maps(void *cpu_env, int fd) 7904 { 7905 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7906 TaskState *ts = cpu->opaque; 7907 GSList *map_info = read_self_maps(); 7908 GSList *s; 7909 int count; 7910 7911 for (s = map_info; s; s = g_slist_next(s)) { 7912 MapInfo *e = (MapInfo *) s->data; 7913 7914 if (h2g_valid(e->start)) { 7915 unsigned long min = e->start; 7916 unsigned long max = e->end; 7917 int flags = page_get_flags(h2g(min)); 7918 const char *path; 7919 7920 max = h2g_valid(max - 1) ? 7921 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; 7922 7923 if (page_check_range(h2g(min), max - min, flags) == -1) { 7924 continue; 7925 } 7926 7927 if (h2g(min) == ts->info->stack_limit) { 7928 path = "[stack]"; 7929 } else { 7930 path = e->path; 7931 } 7932 7933 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 7934 " %c%c%c%c %08" PRIx64 " %s %"PRId64, 7935 h2g(min), h2g(max - 1) + 1, 7936 (flags & PAGE_READ) ? 'r' : '-', 7937 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 7938 (flags & PAGE_EXEC) ? 'x' : '-', 7939 e->is_priv ? 'p' : '-', 7940 (uint64_t) e->offset, e->dev, e->inode); 7941 if (path) { 7942 dprintf(fd, "%*s%s\n", 73 - count, "", path); 7943 } else { 7944 dprintf(fd, "\n"); 7945 } 7946 } 7947 } 7948 7949 free_self_maps(map_info); 7950 7951 #ifdef TARGET_VSYSCALL_PAGE 7952 /* 7953 * We only support execution from the vsyscall page. 7954 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 7955 */ 7956 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 7957 " --xp 00000000 00:00 0", 7958 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 7959 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]"); 7960 #endif 7961 7962 return 0; 7963 } 7964 7965 static int open_self_stat(void *cpu_env, int fd) 7966 { 7967 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7968 TaskState *ts = cpu->opaque; 7969 g_autoptr(GString) buf = g_string_new(NULL); 7970 int i; 7971 7972 for (i = 0; i < 44; i++) { 7973 if (i == 0) { 7974 /* pid */ 7975 g_string_printf(buf, FMT_pid " ", getpid()); 7976 } else if (i == 1) { 7977 /* app name */ 7978 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 7979 bin = bin ? bin + 1 : ts->bprm->argv[0]; 7980 g_string_printf(buf, "(%.15s) ", bin); 7981 } else if (i == 3) { 7982 /* ppid */ 7983 g_string_printf(buf, FMT_pid " ", getppid()); 7984 } else if (i == 27) { 7985 /* stack bottom */ 7986 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 7987 } else { 7988 /* for the rest, there is MasterCard */ 7989 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 7990 } 7991 7992 if (write(fd, buf->str, buf->len) != buf->len) { 7993 return -1; 7994 } 7995 } 7996 7997 return 0; 7998 } 7999 8000 static int open_self_auxv(void *cpu_env, int fd) 8001 { 8002 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 8003 TaskState *ts = cpu->opaque; 8004 abi_ulong auxv = ts->info->saved_auxv; 8005 abi_ulong len = ts->info->auxv_len; 8006 char *ptr; 8007 8008 /* 8009 * Auxiliary vector is stored in target process stack. 8010 * read in whole auxv vector and copy it to file 8011 */ 8012 ptr = lock_user(VERIFY_READ, auxv, len, 0); 8013 if (ptr != NULL) { 8014 while (len > 0) { 8015 ssize_t r; 8016 r = write(fd, ptr, len); 8017 if (r <= 0) { 8018 break; 8019 } 8020 len -= r; 8021 ptr += r; 8022 } 8023 lseek(fd, 0, SEEK_SET); 8024 unlock_user(ptr, auxv, len); 8025 } 8026 8027 return 0; 8028 } 8029 8030 static int is_proc_myself(const char *filename, const char *entry) 8031 { 8032 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 8033 filename += strlen("/proc/"); 8034 if (!strncmp(filename, "self/", strlen("self/"))) { 8035 filename += strlen("self/"); 8036 } else if (*filename >= '1' && *filename <= '9') { 8037 char myself[80]; 8038 snprintf(myself, sizeof(myself), "%d/", getpid()); 8039 if (!strncmp(filename, myself, strlen(myself))) { 8040 filename += strlen(myself); 8041 } else { 8042 return 0; 8043 } 8044 } else { 8045 return 0; 8046 } 8047 if (!strcmp(filename, entry)) { 8048 return 1; 8049 } 8050 } 8051 return 0; 8052 } 8053 8054 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \ 8055 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) 8056 static int is_proc(const char *filename, const char *entry) 8057 { 8058 return strcmp(filename, entry) == 0; 8059 } 8060 #endif 8061 8062 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 8063 static int open_net_route(void *cpu_env, int fd) 8064 { 8065 FILE *fp; 8066 char *line = NULL; 8067 size_t len = 0; 8068 ssize_t read; 8069 8070 fp = fopen("/proc/net/route", "r"); 8071 if (fp == NULL) { 8072 return -1; 8073 } 8074 8075 /* read header */ 8076 8077 read = getline(&line, &len, fp); 8078 dprintf(fd, "%s", line); 8079 8080 /* read routes */ 8081 8082 while ((read = getline(&line, &len, fp)) != -1) { 8083 char iface[16]; 8084 uint32_t dest, gw, mask; 8085 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8086 int fields; 8087 8088 fields = sscanf(line, 8089 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8090 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8091 &mask, &mtu, &window, &irtt); 8092 if (fields != 11) { 8093 continue; 8094 } 8095 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8096 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8097 metric, tswap32(mask), mtu, window, irtt); 8098 } 8099 8100 free(line); 8101 fclose(fp); 8102 8103 return 0; 8104 } 8105 #endif 8106 8107 #if defined(TARGET_SPARC) 8108 static int open_cpuinfo(void *cpu_env, int fd) 8109 { 8110 dprintf(fd, "type\t\t: sun4u\n"); 8111 return 0; 8112 } 8113 #endif 8114 8115 #if defined(TARGET_HPPA) 8116 static int open_cpuinfo(void *cpu_env, int fd) 8117 { 8118 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n"); 8119 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n"); 8120 dprintf(fd, "capabilities\t: os32\n"); 8121 dprintf(fd, "model\t\t: 9000/778/B160L\n"); 8122 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n"); 8123 return 0; 8124 } 8125 #endif 8126 8127 #if defined(TARGET_M68K) 8128 static int open_hardware(void *cpu_env, int fd) 8129 { 8130 dprintf(fd, "Model:\t\tqemu-m68k\n"); 8131 return 0; 8132 } 8133 #endif 8134 8135 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 8136 { 8137 struct fake_open { 8138 const char *filename; 8139 int (*fill)(void *cpu_env, int fd); 8140 int (*cmp)(const char *s1, const char *s2); 8141 }; 8142 const struct fake_open *fake_open; 8143 static const struct fake_open fakes[] = { 8144 { "maps", open_self_maps, is_proc_myself }, 8145 { "stat", open_self_stat, is_proc_myself }, 8146 { "auxv", open_self_auxv, is_proc_myself }, 8147 { "cmdline", open_self_cmdline, is_proc_myself }, 8148 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 8149 { "/proc/net/route", open_net_route, is_proc }, 8150 #endif 8151 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) 8152 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8153 #endif 8154 #if defined(TARGET_M68K) 8155 { "/proc/hardware", open_hardware, is_proc }, 8156 #endif 8157 { NULL, NULL, NULL } 8158 }; 8159 8160 if (is_proc_myself(pathname, "exe")) { 8161 int execfd = qemu_getauxval(AT_EXECFD); 8162 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 8163 } 8164 8165 for (fake_open = fakes; fake_open->filename; fake_open++) { 8166 if (fake_open->cmp(pathname, fake_open->filename)) { 8167 break; 8168 } 8169 } 8170 8171 if (fake_open->filename) { 8172 const char *tmpdir; 8173 char filename[PATH_MAX]; 8174 int fd, r; 8175 8176 /* create temporary file to map stat to */ 8177 tmpdir = getenv("TMPDIR"); 8178 if (!tmpdir) 8179 tmpdir = "/tmp"; 8180 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8181 fd = mkstemp(filename); 8182 if (fd < 0) { 8183 return fd; 8184 } 8185 unlink(filename); 8186 8187 if ((r = fake_open->fill(cpu_env, fd))) { 8188 int e = errno; 8189 close(fd); 8190 errno = e; 8191 return r; 8192 } 8193 lseek(fd, 0, SEEK_SET); 8194 8195 return fd; 8196 } 8197 8198 return safe_openat(dirfd, path(pathname), flags, mode); 8199 } 8200 8201 #define TIMER_MAGIC 0x0caf0000 8202 #define TIMER_MAGIC_MASK 0xffff0000 8203 8204 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8205 static target_timer_t get_timer_id(abi_long arg) 8206 { 8207 target_timer_t timerid = arg; 8208 8209 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8210 return -TARGET_EINVAL; 8211 } 8212 8213 timerid &= 0xffff; 8214 8215 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8216 return -TARGET_EINVAL; 8217 } 8218 8219 return timerid; 8220 } 8221 8222 static int target_to_host_cpu_mask(unsigned long *host_mask, 8223 size_t host_size, 8224 abi_ulong target_addr, 8225 size_t target_size) 8226 { 8227 unsigned target_bits = sizeof(abi_ulong) * 8; 8228 unsigned host_bits = sizeof(*host_mask) * 8; 8229 abi_ulong *target_mask; 8230 unsigned i, j; 8231 8232 assert(host_size >= target_size); 8233 8234 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8235 if (!target_mask) { 8236 return -TARGET_EFAULT; 8237 } 8238 memset(host_mask, 0, host_size); 8239 8240 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8241 unsigned bit = i * target_bits; 8242 abi_ulong val; 8243 8244 __get_user(val, &target_mask[i]); 8245 for (j = 0; j < target_bits; j++, bit++) { 8246 if (val & (1UL << j)) { 8247 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8248 } 8249 } 8250 } 8251 8252 unlock_user(target_mask, target_addr, 0); 8253 return 0; 8254 } 8255 8256 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8257 size_t host_size, 8258 abi_ulong target_addr, 8259 size_t target_size) 8260 { 8261 unsigned target_bits = sizeof(abi_ulong) * 8; 8262 unsigned host_bits = sizeof(*host_mask) * 8; 8263 abi_ulong *target_mask; 8264 unsigned i, j; 8265 8266 assert(host_size >= target_size); 8267 8268 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8269 if (!target_mask) { 8270 return -TARGET_EFAULT; 8271 } 8272 8273 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8274 unsigned bit = i * target_bits; 8275 abi_ulong val = 0; 8276 8277 for (j = 0; j < target_bits; j++, bit++) { 8278 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8279 val |= 1UL << j; 8280 } 8281 } 8282 __put_user(val, &target_mask[i]); 8283 } 8284 8285 unlock_user(target_mask, target_addr, target_size); 8286 return 0; 8287 } 8288 8289 #ifdef TARGET_NR_getdents 8290 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count) 8291 { 8292 g_autofree void *hdirp = NULL; 8293 void *tdirp; 8294 int hlen, hoff, toff; 8295 int hreclen, treclen; 8296 off64_t prev_diroff = 0; 8297 8298 hdirp = g_try_malloc(count); 8299 if (!hdirp) { 8300 return -TARGET_ENOMEM; 8301 } 8302 8303 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8304 hlen = sys_getdents(dirfd, hdirp, count); 8305 #else 8306 hlen = sys_getdents64(dirfd, hdirp, count); 8307 #endif 8308 8309 hlen = get_errno(hlen); 8310 if (is_error(hlen)) { 8311 return hlen; 8312 } 8313 8314 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8315 if (!tdirp) { 8316 return -TARGET_EFAULT; 8317 } 8318 8319 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8320 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8321 struct linux_dirent *hde = hdirp + hoff; 8322 #else 8323 struct linux_dirent64 *hde = hdirp + hoff; 8324 #endif 8325 struct target_dirent *tde = tdirp + toff; 8326 int namelen; 8327 uint8_t type; 8328 8329 namelen = strlen(hde->d_name); 8330 hreclen = hde->d_reclen; 8331 treclen = offsetof(struct target_dirent, d_name) + namelen + 2; 8332 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent)); 8333 8334 if (toff + treclen > count) { 8335 /* 8336 * If the host struct is smaller than the target struct, or 8337 * requires less alignment and thus packs into less space, 8338 * then the host can return more entries than we can pass 8339 * on to the guest. 8340 */ 8341 if (toff == 0) { 8342 toff = -TARGET_EINVAL; /* result buffer is too small */ 8343 break; 8344 } 8345 /* 8346 * Return what we have, resetting the file pointer to the 8347 * location of the first record not returned. 8348 */ 8349 lseek64(dirfd, prev_diroff, SEEK_SET); 8350 break; 8351 } 8352 8353 prev_diroff = hde->d_off; 8354 tde->d_ino = tswapal(hde->d_ino); 8355 tde->d_off = tswapal(hde->d_off); 8356 tde->d_reclen = tswap16(treclen); 8357 memcpy(tde->d_name, hde->d_name, namelen + 1); 8358 8359 /* 8360 * The getdents type is in what was formerly a padding byte at the 8361 * end of the structure. 8362 */ 8363 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8364 type = *((uint8_t *)hde + hreclen - 1); 8365 #else 8366 type = hde->d_type; 8367 #endif 8368 *((uint8_t *)tde + treclen - 1) = type; 8369 } 8370 8371 unlock_user(tdirp, arg2, toff); 8372 return toff; 8373 } 8374 #endif /* TARGET_NR_getdents */ 8375 8376 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 8377 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count) 8378 { 8379 g_autofree void *hdirp = NULL; 8380 void *tdirp; 8381 int hlen, hoff, toff; 8382 int hreclen, treclen; 8383 off64_t prev_diroff = 0; 8384 8385 hdirp = g_try_malloc(count); 8386 if (!hdirp) { 8387 return -TARGET_ENOMEM; 8388 } 8389 8390 hlen = get_errno(sys_getdents64(dirfd, hdirp, count)); 8391 if (is_error(hlen)) { 8392 return hlen; 8393 } 8394 8395 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8396 if (!tdirp) { 8397 return -TARGET_EFAULT; 8398 } 8399 8400 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8401 struct linux_dirent64 *hde = hdirp + hoff; 8402 struct target_dirent64 *tde = tdirp + toff; 8403 int namelen; 8404 8405 namelen = strlen(hde->d_name) + 1; 8406 hreclen = hde->d_reclen; 8407 treclen = offsetof(struct target_dirent64, d_name) + namelen; 8408 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64)); 8409 8410 if (toff + treclen > count) { 8411 /* 8412 * If the host struct is smaller than the target struct, or 8413 * requires less alignment and thus packs into less space, 8414 * then the host can return more entries than we can pass 8415 * on to the guest. 8416 */ 8417 if (toff == 0) { 8418 toff = -TARGET_EINVAL; /* result buffer is too small */ 8419 break; 8420 } 8421 /* 8422 * Return what we have, resetting the file pointer to the 8423 * location of the first record not returned. 8424 */ 8425 lseek64(dirfd, prev_diroff, SEEK_SET); 8426 break; 8427 } 8428 8429 prev_diroff = hde->d_off; 8430 tde->d_ino = tswap64(hde->d_ino); 8431 tde->d_off = tswap64(hde->d_off); 8432 tde->d_reclen = tswap16(treclen); 8433 tde->d_type = hde->d_type; 8434 memcpy(tde->d_name, hde->d_name, namelen); 8435 } 8436 8437 unlock_user(tdirp, arg2, toff); 8438 return toff; 8439 } 8440 #endif /* TARGET_NR_getdents64 */ 8441 8442 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root) 8443 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old) 8444 #endif 8445 8446 /* This is an internal helper for do_syscall so that it is easier 8447 * to have a single return point, so that actions, such as logging 8448 * of syscall results, can be performed. 8449 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 8450 */ 8451 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, 8452 abi_long arg2, abi_long arg3, abi_long arg4, 8453 abi_long arg5, abi_long arg6, abi_long arg7, 8454 abi_long arg8) 8455 { 8456 CPUState *cpu = env_cpu(cpu_env); 8457 abi_long ret; 8458 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 8459 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 8460 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 8461 || defined(TARGET_NR_statx) 8462 struct stat st; 8463 #endif 8464 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 8465 || defined(TARGET_NR_fstatfs) 8466 struct statfs stfs; 8467 #endif 8468 void *p; 8469 8470 switch(num) { 8471 case TARGET_NR_exit: 8472 /* In old applications this may be used to implement _exit(2). 8473 However in threaded applications it is used for thread termination, 8474 and _exit_group is used for application termination. 8475 Do thread termination if we have more then one thread. */ 8476 8477 if (block_signals()) { 8478 return -QEMU_ERESTARTSYS; 8479 } 8480 8481 pthread_mutex_lock(&clone_lock); 8482 8483 if (CPU_NEXT(first_cpu)) { 8484 TaskState *ts = cpu->opaque; 8485 8486 object_property_set_bool(OBJECT(cpu), "realized", false, NULL); 8487 object_unref(OBJECT(cpu)); 8488 /* 8489 * At this point the CPU should be unrealized and removed 8490 * from cpu lists. We can clean-up the rest of the thread 8491 * data without the lock held. 8492 */ 8493 8494 pthread_mutex_unlock(&clone_lock); 8495 8496 if (ts->child_tidptr) { 8497 put_user_u32(0, ts->child_tidptr); 8498 do_sys_futex(g2h(cpu, ts->child_tidptr), 8499 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 8500 } 8501 thread_cpu = NULL; 8502 g_free(ts); 8503 rcu_unregister_thread(); 8504 pthread_exit(NULL); 8505 } 8506 8507 pthread_mutex_unlock(&clone_lock); 8508 preexit_cleanup(cpu_env, arg1); 8509 _exit(arg1); 8510 return 0; /* avoid warning */ 8511 case TARGET_NR_read: 8512 if (arg2 == 0 && arg3 == 0) { 8513 return get_errno(safe_read(arg1, 0, 0)); 8514 } else { 8515 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8516 return -TARGET_EFAULT; 8517 ret = get_errno(safe_read(arg1, p, arg3)); 8518 if (ret >= 0 && 8519 fd_trans_host_to_target_data(arg1)) { 8520 ret = fd_trans_host_to_target_data(arg1)(p, ret); 8521 } 8522 unlock_user(p, arg2, ret); 8523 } 8524 return ret; 8525 case TARGET_NR_write: 8526 if (arg2 == 0 && arg3 == 0) { 8527 return get_errno(safe_write(arg1, 0, 0)); 8528 } 8529 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8530 return -TARGET_EFAULT; 8531 if (fd_trans_target_to_host_data(arg1)) { 8532 void *copy = g_malloc(arg3); 8533 memcpy(copy, p, arg3); 8534 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 8535 if (ret >= 0) { 8536 ret = get_errno(safe_write(arg1, copy, ret)); 8537 } 8538 g_free(copy); 8539 } else { 8540 ret = get_errno(safe_write(arg1, p, arg3)); 8541 } 8542 unlock_user(p, arg2, 0); 8543 return ret; 8544 8545 #ifdef TARGET_NR_open 8546 case TARGET_NR_open: 8547 if (!(p = lock_user_string(arg1))) 8548 return -TARGET_EFAULT; 8549 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 8550 target_to_host_bitmask(arg2, fcntl_flags_tbl), 8551 arg3)); 8552 fd_trans_unregister(ret); 8553 unlock_user(p, arg1, 0); 8554 return ret; 8555 #endif 8556 case TARGET_NR_openat: 8557 if (!(p = lock_user_string(arg2))) 8558 return -TARGET_EFAULT; 8559 ret = get_errno(do_openat(cpu_env, arg1, p, 8560 target_to_host_bitmask(arg3, fcntl_flags_tbl), 8561 arg4)); 8562 fd_trans_unregister(ret); 8563 unlock_user(p, arg2, 0); 8564 return ret; 8565 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8566 case TARGET_NR_name_to_handle_at: 8567 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 8568 return ret; 8569 #endif 8570 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8571 case TARGET_NR_open_by_handle_at: 8572 ret = do_open_by_handle_at(arg1, arg2, arg3); 8573 fd_trans_unregister(ret); 8574 return ret; 8575 #endif 8576 case TARGET_NR_close: 8577 fd_trans_unregister(arg1); 8578 return get_errno(close(arg1)); 8579 8580 case TARGET_NR_brk: 8581 return do_brk(arg1); 8582 #ifdef TARGET_NR_fork 8583 case TARGET_NR_fork: 8584 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 8585 #endif 8586 #ifdef TARGET_NR_waitpid 8587 case TARGET_NR_waitpid: 8588 { 8589 int status; 8590 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 8591 if (!is_error(ret) && arg2 && ret 8592 && put_user_s32(host_to_target_waitstatus(status), arg2)) 8593 return -TARGET_EFAULT; 8594 } 8595 return ret; 8596 #endif 8597 #ifdef TARGET_NR_waitid 8598 case TARGET_NR_waitid: 8599 { 8600 siginfo_t info; 8601 info.si_pid = 0; 8602 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 8603 if (!is_error(ret) && arg3 && info.si_pid != 0) { 8604 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 8605 return -TARGET_EFAULT; 8606 host_to_target_siginfo(p, &info); 8607 unlock_user(p, arg3, sizeof(target_siginfo_t)); 8608 } 8609 } 8610 return ret; 8611 #endif 8612 #ifdef TARGET_NR_creat /* not on alpha */ 8613 case TARGET_NR_creat: 8614 if (!(p = lock_user_string(arg1))) 8615 return -TARGET_EFAULT; 8616 ret = get_errno(creat(p, arg2)); 8617 fd_trans_unregister(ret); 8618 unlock_user(p, arg1, 0); 8619 return ret; 8620 #endif 8621 #ifdef TARGET_NR_link 8622 case TARGET_NR_link: 8623 { 8624 void * p2; 8625 p = lock_user_string(arg1); 8626 p2 = lock_user_string(arg2); 8627 if (!p || !p2) 8628 ret = -TARGET_EFAULT; 8629 else 8630 ret = get_errno(link(p, p2)); 8631 unlock_user(p2, arg2, 0); 8632 unlock_user(p, arg1, 0); 8633 } 8634 return ret; 8635 #endif 8636 #if defined(TARGET_NR_linkat) 8637 case TARGET_NR_linkat: 8638 { 8639 void * p2 = NULL; 8640 if (!arg2 || !arg4) 8641 return -TARGET_EFAULT; 8642 p = lock_user_string(arg2); 8643 p2 = lock_user_string(arg4); 8644 if (!p || !p2) 8645 ret = -TARGET_EFAULT; 8646 else 8647 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 8648 unlock_user(p, arg2, 0); 8649 unlock_user(p2, arg4, 0); 8650 } 8651 return ret; 8652 #endif 8653 #ifdef TARGET_NR_unlink 8654 case TARGET_NR_unlink: 8655 if (!(p = lock_user_string(arg1))) 8656 return -TARGET_EFAULT; 8657 ret = get_errno(unlink(p)); 8658 unlock_user(p, arg1, 0); 8659 return ret; 8660 #endif 8661 #if defined(TARGET_NR_unlinkat) 8662 case TARGET_NR_unlinkat: 8663 if (!(p = lock_user_string(arg2))) 8664 return -TARGET_EFAULT; 8665 ret = get_errno(unlinkat(arg1, p, arg3)); 8666 unlock_user(p, arg2, 0); 8667 return ret; 8668 #endif 8669 case TARGET_NR_execve: 8670 { 8671 char **argp, **envp; 8672 int argc, envc; 8673 abi_ulong gp; 8674 abi_ulong guest_argp; 8675 abi_ulong guest_envp; 8676 abi_ulong addr; 8677 char **q; 8678 8679 argc = 0; 8680 guest_argp = arg2; 8681 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8682 if (get_user_ual(addr, gp)) 8683 return -TARGET_EFAULT; 8684 if (!addr) 8685 break; 8686 argc++; 8687 } 8688 envc = 0; 8689 guest_envp = arg3; 8690 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8691 if (get_user_ual(addr, gp)) 8692 return -TARGET_EFAULT; 8693 if (!addr) 8694 break; 8695 envc++; 8696 } 8697 8698 argp = g_new0(char *, argc + 1); 8699 envp = g_new0(char *, envc + 1); 8700 8701 for (gp = guest_argp, q = argp; gp; 8702 gp += sizeof(abi_ulong), q++) { 8703 if (get_user_ual(addr, gp)) 8704 goto execve_efault; 8705 if (!addr) 8706 break; 8707 if (!(*q = lock_user_string(addr))) 8708 goto execve_efault; 8709 } 8710 *q = NULL; 8711 8712 for (gp = guest_envp, q = envp; gp; 8713 gp += sizeof(abi_ulong), q++) { 8714 if (get_user_ual(addr, gp)) 8715 goto execve_efault; 8716 if (!addr) 8717 break; 8718 if (!(*q = lock_user_string(addr))) 8719 goto execve_efault; 8720 } 8721 *q = NULL; 8722 8723 if (!(p = lock_user_string(arg1))) 8724 goto execve_efault; 8725 /* Although execve() is not an interruptible syscall it is 8726 * a special case where we must use the safe_syscall wrapper: 8727 * if we allow a signal to happen before we make the host 8728 * syscall then we will 'lose' it, because at the point of 8729 * execve the process leaves QEMU's control. So we use the 8730 * safe syscall wrapper to ensure that we either take the 8731 * signal as a guest signal, or else it does not happen 8732 * before the execve completes and makes it the other 8733 * program's problem. 8734 */ 8735 ret = get_errno(safe_execve(p, argp, envp)); 8736 unlock_user(p, arg1, 0); 8737 8738 goto execve_end; 8739 8740 execve_efault: 8741 ret = -TARGET_EFAULT; 8742 8743 execve_end: 8744 for (gp = guest_argp, q = argp; *q; 8745 gp += sizeof(abi_ulong), q++) { 8746 if (get_user_ual(addr, gp) 8747 || !addr) 8748 break; 8749 unlock_user(*q, addr, 0); 8750 } 8751 for (gp = guest_envp, q = envp; *q; 8752 gp += sizeof(abi_ulong), q++) { 8753 if (get_user_ual(addr, gp) 8754 || !addr) 8755 break; 8756 unlock_user(*q, addr, 0); 8757 } 8758 8759 g_free(argp); 8760 g_free(envp); 8761 } 8762 return ret; 8763 case TARGET_NR_chdir: 8764 if (!(p = lock_user_string(arg1))) 8765 return -TARGET_EFAULT; 8766 ret = get_errno(chdir(p)); 8767 unlock_user(p, arg1, 0); 8768 return ret; 8769 #ifdef TARGET_NR_time 8770 case TARGET_NR_time: 8771 { 8772 time_t host_time; 8773 ret = get_errno(time(&host_time)); 8774 if (!is_error(ret) 8775 && arg1 8776 && put_user_sal(host_time, arg1)) 8777 return -TARGET_EFAULT; 8778 } 8779 return ret; 8780 #endif 8781 #ifdef TARGET_NR_mknod 8782 case TARGET_NR_mknod: 8783 if (!(p = lock_user_string(arg1))) 8784 return -TARGET_EFAULT; 8785 ret = get_errno(mknod(p, arg2, arg3)); 8786 unlock_user(p, arg1, 0); 8787 return ret; 8788 #endif 8789 #if defined(TARGET_NR_mknodat) 8790 case TARGET_NR_mknodat: 8791 if (!(p = lock_user_string(arg2))) 8792 return -TARGET_EFAULT; 8793 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8794 unlock_user(p, arg2, 0); 8795 return ret; 8796 #endif 8797 #ifdef TARGET_NR_chmod 8798 case TARGET_NR_chmod: 8799 if (!(p = lock_user_string(arg1))) 8800 return -TARGET_EFAULT; 8801 ret = get_errno(chmod(p, arg2)); 8802 unlock_user(p, arg1, 0); 8803 return ret; 8804 #endif 8805 #ifdef TARGET_NR_lseek 8806 case TARGET_NR_lseek: 8807 return get_errno(lseek(arg1, arg2, arg3)); 8808 #endif 8809 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8810 /* Alpha specific */ 8811 case TARGET_NR_getxpid: 8812 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); 8813 return get_errno(getpid()); 8814 #endif 8815 #ifdef TARGET_NR_getpid 8816 case TARGET_NR_getpid: 8817 return get_errno(getpid()); 8818 #endif 8819 case TARGET_NR_mount: 8820 { 8821 /* need to look at the data field */ 8822 void *p2, *p3; 8823 8824 if (arg1) { 8825 p = lock_user_string(arg1); 8826 if (!p) { 8827 return -TARGET_EFAULT; 8828 } 8829 } else { 8830 p = NULL; 8831 } 8832 8833 p2 = lock_user_string(arg2); 8834 if (!p2) { 8835 if (arg1) { 8836 unlock_user(p, arg1, 0); 8837 } 8838 return -TARGET_EFAULT; 8839 } 8840 8841 if (arg3) { 8842 p3 = lock_user_string(arg3); 8843 if (!p3) { 8844 if (arg1) { 8845 unlock_user(p, arg1, 0); 8846 } 8847 unlock_user(p2, arg2, 0); 8848 return -TARGET_EFAULT; 8849 } 8850 } else { 8851 p3 = NULL; 8852 } 8853 8854 /* FIXME - arg5 should be locked, but it isn't clear how to 8855 * do that since it's not guaranteed to be a NULL-terminated 8856 * string. 8857 */ 8858 if (!arg5) { 8859 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8860 } else { 8861 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 8862 } 8863 ret = get_errno(ret); 8864 8865 if (arg1) { 8866 unlock_user(p, arg1, 0); 8867 } 8868 unlock_user(p2, arg2, 0); 8869 if (arg3) { 8870 unlock_user(p3, arg3, 0); 8871 } 8872 } 8873 return ret; 8874 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 8875 #if defined(TARGET_NR_umount) 8876 case TARGET_NR_umount: 8877 #endif 8878 #if defined(TARGET_NR_oldumount) 8879 case TARGET_NR_oldumount: 8880 #endif 8881 if (!(p = lock_user_string(arg1))) 8882 return -TARGET_EFAULT; 8883 ret = get_errno(umount(p)); 8884 unlock_user(p, arg1, 0); 8885 return ret; 8886 #endif 8887 #ifdef TARGET_NR_stime /* not on alpha */ 8888 case TARGET_NR_stime: 8889 { 8890 struct timespec ts; 8891 ts.tv_nsec = 0; 8892 if (get_user_sal(ts.tv_sec, arg1)) { 8893 return -TARGET_EFAULT; 8894 } 8895 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 8896 } 8897 #endif 8898 #ifdef TARGET_NR_alarm /* not on alpha */ 8899 case TARGET_NR_alarm: 8900 return alarm(arg1); 8901 #endif 8902 #ifdef TARGET_NR_pause /* not on alpha */ 8903 case TARGET_NR_pause: 8904 if (!block_signals()) { 8905 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 8906 } 8907 return -TARGET_EINTR; 8908 #endif 8909 #ifdef TARGET_NR_utime 8910 case TARGET_NR_utime: 8911 { 8912 struct utimbuf tbuf, *host_tbuf; 8913 struct target_utimbuf *target_tbuf; 8914 if (arg2) { 8915 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 8916 return -TARGET_EFAULT; 8917 tbuf.actime = tswapal(target_tbuf->actime); 8918 tbuf.modtime = tswapal(target_tbuf->modtime); 8919 unlock_user_struct(target_tbuf, arg2, 0); 8920 host_tbuf = &tbuf; 8921 } else { 8922 host_tbuf = NULL; 8923 } 8924 if (!(p = lock_user_string(arg1))) 8925 return -TARGET_EFAULT; 8926 ret = get_errno(utime(p, host_tbuf)); 8927 unlock_user(p, arg1, 0); 8928 } 8929 return ret; 8930 #endif 8931 #ifdef TARGET_NR_utimes 8932 case TARGET_NR_utimes: 8933 { 8934 struct timeval *tvp, tv[2]; 8935 if (arg2) { 8936 if (copy_from_user_timeval(&tv[0], arg2) 8937 || copy_from_user_timeval(&tv[1], 8938 arg2 + sizeof(struct target_timeval))) 8939 return -TARGET_EFAULT; 8940 tvp = tv; 8941 } else { 8942 tvp = NULL; 8943 } 8944 if (!(p = lock_user_string(arg1))) 8945 return -TARGET_EFAULT; 8946 ret = get_errno(utimes(p, tvp)); 8947 unlock_user(p, arg1, 0); 8948 } 8949 return ret; 8950 #endif 8951 #if defined(TARGET_NR_futimesat) 8952 case TARGET_NR_futimesat: 8953 { 8954 struct timeval *tvp, tv[2]; 8955 if (arg3) { 8956 if (copy_from_user_timeval(&tv[0], arg3) 8957 || copy_from_user_timeval(&tv[1], 8958 arg3 + sizeof(struct target_timeval))) 8959 return -TARGET_EFAULT; 8960 tvp = tv; 8961 } else { 8962 tvp = NULL; 8963 } 8964 if (!(p = lock_user_string(arg2))) { 8965 return -TARGET_EFAULT; 8966 } 8967 ret = get_errno(futimesat(arg1, path(p), tvp)); 8968 unlock_user(p, arg2, 0); 8969 } 8970 return ret; 8971 #endif 8972 #ifdef TARGET_NR_access 8973 case TARGET_NR_access: 8974 if (!(p = lock_user_string(arg1))) { 8975 return -TARGET_EFAULT; 8976 } 8977 ret = get_errno(access(path(p), arg2)); 8978 unlock_user(p, arg1, 0); 8979 return ret; 8980 #endif 8981 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 8982 case TARGET_NR_faccessat: 8983 if (!(p = lock_user_string(arg2))) { 8984 return -TARGET_EFAULT; 8985 } 8986 ret = get_errno(faccessat(arg1, p, arg3, 0)); 8987 unlock_user(p, arg2, 0); 8988 return ret; 8989 #endif 8990 #ifdef TARGET_NR_nice /* not on alpha */ 8991 case TARGET_NR_nice: 8992 return get_errno(nice(arg1)); 8993 #endif 8994 case TARGET_NR_sync: 8995 sync(); 8996 return 0; 8997 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 8998 case TARGET_NR_syncfs: 8999 return get_errno(syncfs(arg1)); 9000 #endif 9001 case TARGET_NR_kill: 9002 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 9003 #ifdef TARGET_NR_rename 9004 case TARGET_NR_rename: 9005 { 9006 void *p2; 9007 p = lock_user_string(arg1); 9008 p2 = lock_user_string(arg2); 9009 if (!p || !p2) 9010 ret = -TARGET_EFAULT; 9011 else 9012 ret = get_errno(rename(p, p2)); 9013 unlock_user(p2, arg2, 0); 9014 unlock_user(p, arg1, 0); 9015 } 9016 return ret; 9017 #endif 9018 #if defined(TARGET_NR_renameat) 9019 case TARGET_NR_renameat: 9020 { 9021 void *p2; 9022 p = lock_user_string(arg2); 9023 p2 = lock_user_string(arg4); 9024 if (!p || !p2) 9025 ret = -TARGET_EFAULT; 9026 else 9027 ret = get_errno(renameat(arg1, p, arg3, p2)); 9028 unlock_user(p2, arg4, 0); 9029 unlock_user(p, arg2, 0); 9030 } 9031 return ret; 9032 #endif 9033 #if defined(TARGET_NR_renameat2) 9034 case TARGET_NR_renameat2: 9035 { 9036 void *p2; 9037 p = lock_user_string(arg2); 9038 p2 = lock_user_string(arg4); 9039 if (!p || !p2) { 9040 ret = -TARGET_EFAULT; 9041 } else { 9042 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 9043 } 9044 unlock_user(p2, arg4, 0); 9045 unlock_user(p, arg2, 0); 9046 } 9047 return ret; 9048 #endif 9049 #ifdef TARGET_NR_mkdir 9050 case TARGET_NR_mkdir: 9051 if (!(p = lock_user_string(arg1))) 9052 return -TARGET_EFAULT; 9053 ret = get_errno(mkdir(p, arg2)); 9054 unlock_user(p, arg1, 0); 9055 return ret; 9056 #endif 9057 #if defined(TARGET_NR_mkdirat) 9058 case TARGET_NR_mkdirat: 9059 if (!(p = lock_user_string(arg2))) 9060 return -TARGET_EFAULT; 9061 ret = get_errno(mkdirat(arg1, p, arg3)); 9062 unlock_user(p, arg2, 0); 9063 return ret; 9064 #endif 9065 #ifdef TARGET_NR_rmdir 9066 case TARGET_NR_rmdir: 9067 if (!(p = lock_user_string(arg1))) 9068 return -TARGET_EFAULT; 9069 ret = get_errno(rmdir(p)); 9070 unlock_user(p, arg1, 0); 9071 return ret; 9072 #endif 9073 case TARGET_NR_dup: 9074 ret = get_errno(dup(arg1)); 9075 if (ret >= 0) { 9076 fd_trans_dup(arg1, ret); 9077 } 9078 return ret; 9079 #ifdef TARGET_NR_pipe 9080 case TARGET_NR_pipe: 9081 return do_pipe(cpu_env, arg1, 0, 0); 9082 #endif 9083 #ifdef TARGET_NR_pipe2 9084 case TARGET_NR_pipe2: 9085 return do_pipe(cpu_env, arg1, 9086 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 9087 #endif 9088 case TARGET_NR_times: 9089 { 9090 struct target_tms *tmsp; 9091 struct tms tms; 9092 ret = get_errno(times(&tms)); 9093 if (arg1) { 9094 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 9095 if (!tmsp) 9096 return -TARGET_EFAULT; 9097 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 9098 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 9099 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 9100 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 9101 } 9102 if (!is_error(ret)) 9103 ret = host_to_target_clock_t(ret); 9104 } 9105 return ret; 9106 case TARGET_NR_acct: 9107 if (arg1 == 0) { 9108 ret = get_errno(acct(NULL)); 9109 } else { 9110 if (!(p = lock_user_string(arg1))) { 9111 return -TARGET_EFAULT; 9112 } 9113 ret = get_errno(acct(path(p))); 9114 unlock_user(p, arg1, 0); 9115 } 9116 return ret; 9117 #ifdef TARGET_NR_umount2 9118 case TARGET_NR_umount2: 9119 if (!(p = lock_user_string(arg1))) 9120 return -TARGET_EFAULT; 9121 ret = get_errno(umount2(p, arg2)); 9122 unlock_user(p, arg1, 0); 9123 return ret; 9124 #endif 9125 case TARGET_NR_ioctl: 9126 return do_ioctl(arg1, arg2, arg3); 9127 #ifdef TARGET_NR_fcntl 9128 case TARGET_NR_fcntl: 9129 return do_fcntl(arg1, arg2, arg3); 9130 #endif 9131 case TARGET_NR_setpgid: 9132 return get_errno(setpgid(arg1, arg2)); 9133 case TARGET_NR_umask: 9134 return get_errno(umask(arg1)); 9135 case TARGET_NR_chroot: 9136 if (!(p = lock_user_string(arg1))) 9137 return -TARGET_EFAULT; 9138 ret = get_errno(chroot(p)); 9139 unlock_user(p, arg1, 0); 9140 return ret; 9141 #ifdef TARGET_NR_dup2 9142 case TARGET_NR_dup2: 9143 ret = get_errno(dup2(arg1, arg2)); 9144 if (ret >= 0) { 9145 fd_trans_dup(arg1, arg2); 9146 } 9147 return ret; 9148 #endif 9149 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 9150 case TARGET_NR_dup3: 9151 { 9152 int host_flags; 9153 9154 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 9155 return -EINVAL; 9156 } 9157 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 9158 ret = get_errno(dup3(arg1, arg2, host_flags)); 9159 if (ret >= 0) { 9160 fd_trans_dup(arg1, arg2); 9161 } 9162 return ret; 9163 } 9164 #endif 9165 #ifdef TARGET_NR_getppid /* not on alpha */ 9166 case TARGET_NR_getppid: 9167 return get_errno(getppid()); 9168 #endif 9169 #ifdef TARGET_NR_getpgrp 9170 case TARGET_NR_getpgrp: 9171 return get_errno(getpgrp()); 9172 #endif 9173 case TARGET_NR_setsid: 9174 return get_errno(setsid()); 9175 #ifdef TARGET_NR_sigaction 9176 case TARGET_NR_sigaction: 9177 { 9178 #if defined(TARGET_MIPS) 9179 struct target_sigaction act, oact, *pact, *old_act; 9180 9181 if (arg2) { 9182 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9183 return -TARGET_EFAULT; 9184 act._sa_handler = old_act->_sa_handler; 9185 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 9186 act.sa_flags = old_act->sa_flags; 9187 unlock_user_struct(old_act, arg2, 0); 9188 pact = &act; 9189 } else { 9190 pact = NULL; 9191 } 9192 9193 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9194 9195 if (!is_error(ret) && arg3) { 9196 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9197 return -TARGET_EFAULT; 9198 old_act->_sa_handler = oact._sa_handler; 9199 old_act->sa_flags = oact.sa_flags; 9200 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9201 old_act->sa_mask.sig[1] = 0; 9202 old_act->sa_mask.sig[2] = 0; 9203 old_act->sa_mask.sig[3] = 0; 9204 unlock_user_struct(old_act, arg3, 1); 9205 } 9206 #else 9207 struct target_old_sigaction *old_act; 9208 struct target_sigaction act, oact, *pact; 9209 if (arg2) { 9210 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9211 return -TARGET_EFAULT; 9212 act._sa_handler = old_act->_sa_handler; 9213 target_siginitset(&act.sa_mask, old_act->sa_mask); 9214 act.sa_flags = old_act->sa_flags; 9215 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9216 act.sa_restorer = old_act->sa_restorer; 9217 #endif 9218 unlock_user_struct(old_act, arg2, 0); 9219 pact = &act; 9220 } else { 9221 pact = NULL; 9222 } 9223 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9224 if (!is_error(ret) && arg3) { 9225 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9226 return -TARGET_EFAULT; 9227 old_act->_sa_handler = oact._sa_handler; 9228 old_act->sa_mask = oact.sa_mask.sig[0]; 9229 old_act->sa_flags = oact.sa_flags; 9230 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9231 old_act->sa_restorer = oact.sa_restorer; 9232 #endif 9233 unlock_user_struct(old_act, arg3, 1); 9234 } 9235 #endif 9236 } 9237 return ret; 9238 #endif 9239 case TARGET_NR_rt_sigaction: 9240 { 9241 /* 9242 * For Alpha and SPARC this is a 5 argument syscall, with 9243 * a 'restorer' parameter which must be copied into the 9244 * sa_restorer field of the sigaction struct. 9245 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9246 * and arg5 is the sigsetsize. 9247 */ 9248 #if defined(TARGET_ALPHA) 9249 target_ulong sigsetsize = arg4; 9250 target_ulong restorer = arg5; 9251 #elif defined(TARGET_SPARC) 9252 target_ulong restorer = arg4; 9253 target_ulong sigsetsize = arg5; 9254 #else 9255 target_ulong sigsetsize = arg4; 9256 target_ulong restorer = 0; 9257 #endif 9258 struct target_sigaction *act = NULL; 9259 struct target_sigaction *oact = NULL; 9260 9261 if (sigsetsize != sizeof(target_sigset_t)) { 9262 return -TARGET_EINVAL; 9263 } 9264 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9265 return -TARGET_EFAULT; 9266 } 9267 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9268 ret = -TARGET_EFAULT; 9269 } else { 9270 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9271 if (oact) { 9272 unlock_user_struct(oact, arg3, 1); 9273 } 9274 } 9275 if (act) { 9276 unlock_user_struct(act, arg2, 0); 9277 } 9278 } 9279 return ret; 9280 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9281 case TARGET_NR_sgetmask: 9282 { 9283 sigset_t cur_set; 9284 abi_ulong target_set; 9285 ret = do_sigprocmask(0, NULL, &cur_set); 9286 if (!ret) { 9287 host_to_target_old_sigset(&target_set, &cur_set); 9288 ret = target_set; 9289 } 9290 } 9291 return ret; 9292 #endif 9293 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9294 case TARGET_NR_ssetmask: 9295 { 9296 sigset_t set, oset; 9297 abi_ulong target_set = arg1; 9298 target_to_host_old_sigset(&set, &target_set); 9299 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9300 if (!ret) { 9301 host_to_target_old_sigset(&target_set, &oset); 9302 ret = target_set; 9303 } 9304 } 9305 return ret; 9306 #endif 9307 #ifdef TARGET_NR_sigprocmask 9308 case TARGET_NR_sigprocmask: 9309 { 9310 #if defined(TARGET_ALPHA) 9311 sigset_t set, oldset; 9312 abi_ulong mask; 9313 int how; 9314 9315 switch (arg1) { 9316 case TARGET_SIG_BLOCK: 9317 how = SIG_BLOCK; 9318 break; 9319 case TARGET_SIG_UNBLOCK: 9320 how = SIG_UNBLOCK; 9321 break; 9322 case TARGET_SIG_SETMASK: 9323 how = SIG_SETMASK; 9324 break; 9325 default: 9326 return -TARGET_EINVAL; 9327 } 9328 mask = arg2; 9329 target_to_host_old_sigset(&set, &mask); 9330 9331 ret = do_sigprocmask(how, &set, &oldset); 9332 if (!is_error(ret)) { 9333 host_to_target_old_sigset(&mask, &oldset); 9334 ret = mask; 9335 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ 9336 } 9337 #else 9338 sigset_t set, oldset, *set_ptr; 9339 int how; 9340 9341 if (arg2) { 9342 switch (arg1) { 9343 case TARGET_SIG_BLOCK: 9344 how = SIG_BLOCK; 9345 break; 9346 case TARGET_SIG_UNBLOCK: 9347 how = SIG_UNBLOCK; 9348 break; 9349 case TARGET_SIG_SETMASK: 9350 how = SIG_SETMASK; 9351 break; 9352 default: 9353 return -TARGET_EINVAL; 9354 } 9355 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 9356 return -TARGET_EFAULT; 9357 target_to_host_old_sigset(&set, p); 9358 unlock_user(p, arg2, 0); 9359 set_ptr = &set; 9360 } else { 9361 how = 0; 9362 set_ptr = NULL; 9363 } 9364 ret = do_sigprocmask(how, set_ptr, &oldset); 9365 if (!is_error(ret) && arg3) { 9366 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9367 return -TARGET_EFAULT; 9368 host_to_target_old_sigset(p, &oldset); 9369 unlock_user(p, arg3, sizeof(target_sigset_t)); 9370 } 9371 #endif 9372 } 9373 return ret; 9374 #endif 9375 case TARGET_NR_rt_sigprocmask: 9376 { 9377 int how = arg1; 9378 sigset_t set, oldset, *set_ptr; 9379 9380 if (arg4 != sizeof(target_sigset_t)) { 9381 return -TARGET_EINVAL; 9382 } 9383 9384 if (arg2) { 9385 switch(how) { 9386 case TARGET_SIG_BLOCK: 9387 how = SIG_BLOCK; 9388 break; 9389 case TARGET_SIG_UNBLOCK: 9390 how = SIG_UNBLOCK; 9391 break; 9392 case TARGET_SIG_SETMASK: 9393 how = SIG_SETMASK; 9394 break; 9395 default: 9396 return -TARGET_EINVAL; 9397 } 9398 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 9399 return -TARGET_EFAULT; 9400 target_to_host_sigset(&set, p); 9401 unlock_user(p, arg2, 0); 9402 set_ptr = &set; 9403 } else { 9404 how = 0; 9405 set_ptr = NULL; 9406 } 9407 ret = do_sigprocmask(how, set_ptr, &oldset); 9408 if (!is_error(ret) && arg3) { 9409 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9410 return -TARGET_EFAULT; 9411 host_to_target_sigset(p, &oldset); 9412 unlock_user(p, arg3, sizeof(target_sigset_t)); 9413 } 9414 } 9415 return ret; 9416 #ifdef TARGET_NR_sigpending 9417 case TARGET_NR_sigpending: 9418 { 9419 sigset_t set; 9420 ret = get_errno(sigpending(&set)); 9421 if (!is_error(ret)) { 9422 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9423 return -TARGET_EFAULT; 9424 host_to_target_old_sigset(p, &set); 9425 unlock_user(p, arg1, sizeof(target_sigset_t)); 9426 } 9427 } 9428 return ret; 9429 #endif 9430 case TARGET_NR_rt_sigpending: 9431 { 9432 sigset_t set; 9433 9434 /* Yes, this check is >, not != like most. We follow the kernel's 9435 * logic and it does it like this because it implements 9436 * NR_sigpending through the same code path, and in that case 9437 * the old_sigset_t is smaller in size. 9438 */ 9439 if (arg2 > sizeof(target_sigset_t)) { 9440 return -TARGET_EINVAL; 9441 } 9442 9443 ret = get_errno(sigpending(&set)); 9444 if (!is_error(ret)) { 9445 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9446 return -TARGET_EFAULT; 9447 host_to_target_sigset(p, &set); 9448 unlock_user(p, arg1, sizeof(target_sigset_t)); 9449 } 9450 } 9451 return ret; 9452 #ifdef TARGET_NR_sigsuspend 9453 case TARGET_NR_sigsuspend: 9454 { 9455 TaskState *ts = cpu->opaque; 9456 #if defined(TARGET_ALPHA) 9457 abi_ulong mask = arg1; 9458 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask); 9459 #else 9460 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9461 return -TARGET_EFAULT; 9462 target_to_host_old_sigset(&ts->sigsuspend_mask, p); 9463 unlock_user(p, arg1, 0); 9464 #endif 9465 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 9466 SIGSET_T_SIZE)); 9467 if (ret != -QEMU_ERESTARTSYS) { 9468 ts->in_sigsuspend = 1; 9469 } 9470 } 9471 return ret; 9472 #endif 9473 case TARGET_NR_rt_sigsuspend: 9474 { 9475 TaskState *ts = cpu->opaque; 9476 9477 if (arg2 != sizeof(target_sigset_t)) { 9478 return -TARGET_EINVAL; 9479 } 9480 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9481 return -TARGET_EFAULT; 9482 target_to_host_sigset(&ts->sigsuspend_mask, p); 9483 unlock_user(p, arg1, 0); 9484 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 9485 SIGSET_T_SIZE)); 9486 if (ret != -QEMU_ERESTARTSYS) { 9487 ts->in_sigsuspend = 1; 9488 } 9489 } 9490 return ret; 9491 #ifdef TARGET_NR_rt_sigtimedwait 9492 case TARGET_NR_rt_sigtimedwait: 9493 { 9494 sigset_t set; 9495 struct timespec uts, *puts; 9496 siginfo_t uinfo; 9497 9498 if (arg4 != sizeof(target_sigset_t)) { 9499 return -TARGET_EINVAL; 9500 } 9501 9502 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9503 return -TARGET_EFAULT; 9504 target_to_host_sigset(&set, p); 9505 unlock_user(p, arg1, 0); 9506 if (arg3) { 9507 puts = &uts; 9508 if (target_to_host_timespec(puts, arg3)) { 9509 return -TARGET_EFAULT; 9510 } 9511 } else { 9512 puts = NULL; 9513 } 9514 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9515 SIGSET_T_SIZE)); 9516 if (!is_error(ret)) { 9517 if (arg2) { 9518 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 9519 0); 9520 if (!p) { 9521 return -TARGET_EFAULT; 9522 } 9523 host_to_target_siginfo(p, &uinfo); 9524 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9525 } 9526 ret = host_to_target_signal(ret); 9527 } 9528 } 9529 return ret; 9530 #endif 9531 #ifdef TARGET_NR_rt_sigtimedwait_time64 9532 case TARGET_NR_rt_sigtimedwait_time64: 9533 { 9534 sigset_t set; 9535 struct timespec uts, *puts; 9536 siginfo_t uinfo; 9537 9538 if (arg4 != sizeof(target_sigset_t)) { 9539 return -TARGET_EINVAL; 9540 } 9541 9542 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 9543 if (!p) { 9544 return -TARGET_EFAULT; 9545 } 9546 target_to_host_sigset(&set, p); 9547 unlock_user(p, arg1, 0); 9548 if (arg3) { 9549 puts = &uts; 9550 if (target_to_host_timespec64(puts, arg3)) { 9551 return -TARGET_EFAULT; 9552 } 9553 } else { 9554 puts = NULL; 9555 } 9556 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9557 SIGSET_T_SIZE)); 9558 if (!is_error(ret)) { 9559 if (arg2) { 9560 p = lock_user(VERIFY_WRITE, arg2, 9561 sizeof(target_siginfo_t), 0); 9562 if (!p) { 9563 return -TARGET_EFAULT; 9564 } 9565 host_to_target_siginfo(p, &uinfo); 9566 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9567 } 9568 ret = host_to_target_signal(ret); 9569 } 9570 } 9571 return ret; 9572 #endif 9573 case TARGET_NR_rt_sigqueueinfo: 9574 { 9575 siginfo_t uinfo; 9576 9577 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9578 if (!p) { 9579 return -TARGET_EFAULT; 9580 } 9581 target_to_host_siginfo(&uinfo, p); 9582 unlock_user(p, arg3, 0); 9583 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); 9584 } 9585 return ret; 9586 case TARGET_NR_rt_tgsigqueueinfo: 9587 { 9588 siginfo_t uinfo; 9589 9590 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 9591 if (!p) { 9592 return -TARGET_EFAULT; 9593 } 9594 target_to_host_siginfo(&uinfo, p); 9595 unlock_user(p, arg4, 0); 9596 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo)); 9597 } 9598 return ret; 9599 #ifdef TARGET_NR_sigreturn 9600 case TARGET_NR_sigreturn: 9601 if (block_signals()) { 9602 return -QEMU_ERESTARTSYS; 9603 } 9604 return do_sigreturn(cpu_env); 9605 #endif 9606 case TARGET_NR_rt_sigreturn: 9607 if (block_signals()) { 9608 return -QEMU_ERESTARTSYS; 9609 } 9610 return do_rt_sigreturn(cpu_env); 9611 case TARGET_NR_sethostname: 9612 if (!(p = lock_user_string(arg1))) 9613 return -TARGET_EFAULT; 9614 ret = get_errno(sethostname(p, arg2)); 9615 unlock_user(p, arg1, 0); 9616 return ret; 9617 #ifdef TARGET_NR_setrlimit 9618 case TARGET_NR_setrlimit: 9619 { 9620 int resource = target_to_host_resource(arg1); 9621 struct target_rlimit *target_rlim; 9622 struct rlimit rlim; 9623 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 9624 return -TARGET_EFAULT; 9625 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 9626 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 9627 unlock_user_struct(target_rlim, arg2, 0); 9628 /* 9629 * If we just passed through resource limit settings for memory then 9630 * they would also apply to QEMU's own allocations, and QEMU will 9631 * crash or hang or die if its allocations fail. Ideally we would 9632 * track the guest allocations in QEMU and apply the limits ourselves. 9633 * For now, just tell the guest the call succeeded but don't actually 9634 * limit anything. 9635 */ 9636 if (resource != RLIMIT_AS && 9637 resource != RLIMIT_DATA && 9638 resource != RLIMIT_STACK) { 9639 return get_errno(setrlimit(resource, &rlim)); 9640 } else { 9641 return 0; 9642 } 9643 } 9644 #endif 9645 #ifdef TARGET_NR_getrlimit 9646 case TARGET_NR_getrlimit: 9647 { 9648 int resource = target_to_host_resource(arg1); 9649 struct target_rlimit *target_rlim; 9650 struct rlimit rlim; 9651 9652 ret = get_errno(getrlimit(resource, &rlim)); 9653 if (!is_error(ret)) { 9654 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 9655 return -TARGET_EFAULT; 9656 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 9657 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 9658 unlock_user_struct(target_rlim, arg2, 1); 9659 } 9660 } 9661 return ret; 9662 #endif 9663 case TARGET_NR_getrusage: 9664 { 9665 struct rusage rusage; 9666 ret = get_errno(getrusage(arg1, &rusage)); 9667 if (!is_error(ret)) { 9668 ret = host_to_target_rusage(arg2, &rusage); 9669 } 9670 } 9671 return ret; 9672 #if defined(TARGET_NR_gettimeofday) 9673 case TARGET_NR_gettimeofday: 9674 { 9675 struct timeval tv; 9676 struct timezone tz; 9677 9678 ret = get_errno(gettimeofday(&tv, &tz)); 9679 if (!is_error(ret)) { 9680 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 9681 return -TARGET_EFAULT; 9682 } 9683 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 9684 return -TARGET_EFAULT; 9685 } 9686 } 9687 } 9688 return ret; 9689 #endif 9690 #if defined(TARGET_NR_settimeofday) 9691 case TARGET_NR_settimeofday: 9692 { 9693 struct timeval tv, *ptv = NULL; 9694 struct timezone tz, *ptz = NULL; 9695 9696 if (arg1) { 9697 if (copy_from_user_timeval(&tv, arg1)) { 9698 return -TARGET_EFAULT; 9699 } 9700 ptv = &tv; 9701 } 9702 9703 if (arg2) { 9704 if (copy_from_user_timezone(&tz, arg2)) { 9705 return -TARGET_EFAULT; 9706 } 9707 ptz = &tz; 9708 } 9709 9710 return get_errno(settimeofday(ptv, ptz)); 9711 } 9712 #endif 9713 #if defined(TARGET_NR_select) 9714 case TARGET_NR_select: 9715 #if defined(TARGET_WANT_NI_OLD_SELECT) 9716 /* some architectures used to have old_select here 9717 * but now ENOSYS it. 9718 */ 9719 ret = -TARGET_ENOSYS; 9720 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 9721 ret = do_old_select(arg1); 9722 #else 9723 ret = do_select(arg1, arg2, arg3, arg4, arg5); 9724 #endif 9725 return ret; 9726 #endif 9727 #ifdef TARGET_NR_pselect6 9728 case TARGET_NR_pselect6: 9729 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 9730 #endif 9731 #ifdef TARGET_NR_pselect6_time64 9732 case TARGET_NR_pselect6_time64: 9733 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 9734 #endif 9735 #ifdef TARGET_NR_symlink 9736 case TARGET_NR_symlink: 9737 { 9738 void *p2; 9739 p = lock_user_string(arg1); 9740 p2 = lock_user_string(arg2); 9741 if (!p || !p2) 9742 ret = -TARGET_EFAULT; 9743 else 9744 ret = get_errno(symlink(p, p2)); 9745 unlock_user(p2, arg2, 0); 9746 unlock_user(p, arg1, 0); 9747 } 9748 return ret; 9749 #endif 9750 #if defined(TARGET_NR_symlinkat) 9751 case TARGET_NR_symlinkat: 9752 { 9753 void *p2; 9754 p = lock_user_string(arg1); 9755 p2 = lock_user_string(arg3); 9756 if (!p || !p2) 9757 ret = -TARGET_EFAULT; 9758 else 9759 ret = get_errno(symlinkat(p, arg2, p2)); 9760 unlock_user(p2, arg3, 0); 9761 unlock_user(p, arg1, 0); 9762 } 9763 return ret; 9764 #endif 9765 #ifdef TARGET_NR_readlink 9766 case TARGET_NR_readlink: 9767 { 9768 void *p2; 9769 p = lock_user_string(arg1); 9770 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9771 if (!p || !p2) { 9772 ret = -TARGET_EFAULT; 9773 } else if (!arg3) { 9774 /* Short circuit this for the magic exe check. */ 9775 ret = -TARGET_EINVAL; 9776 } else if (is_proc_myself((const char *)p, "exe")) { 9777 char real[PATH_MAX], *temp; 9778 temp = realpath(exec_path, real); 9779 /* Return value is # of bytes that we wrote to the buffer. */ 9780 if (temp == NULL) { 9781 ret = get_errno(-1); 9782 } else { 9783 /* Don't worry about sign mismatch as earlier mapping 9784 * logic would have thrown a bad address error. */ 9785 ret = MIN(strlen(real), arg3); 9786 /* We cannot NUL terminate the string. */ 9787 memcpy(p2, real, ret); 9788 } 9789 } else { 9790 ret = get_errno(readlink(path(p), p2, arg3)); 9791 } 9792 unlock_user(p2, arg2, ret); 9793 unlock_user(p, arg1, 0); 9794 } 9795 return ret; 9796 #endif 9797 #if defined(TARGET_NR_readlinkat) 9798 case TARGET_NR_readlinkat: 9799 { 9800 void *p2; 9801 p = lock_user_string(arg2); 9802 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9803 if (!p || !p2) { 9804 ret = -TARGET_EFAULT; 9805 } else if (is_proc_myself((const char *)p, "exe")) { 9806 char real[PATH_MAX], *temp; 9807 temp = realpath(exec_path, real); 9808 ret = temp == NULL ? get_errno(-1) : strlen(real) ; 9809 snprintf((char *)p2, arg4, "%s", real); 9810 } else { 9811 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9812 } 9813 unlock_user(p2, arg3, ret); 9814 unlock_user(p, arg2, 0); 9815 } 9816 return ret; 9817 #endif 9818 #ifdef TARGET_NR_swapon 9819 case TARGET_NR_swapon: 9820 if (!(p = lock_user_string(arg1))) 9821 return -TARGET_EFAULT; 9822 ret = get_errno(swapon(p, arg2)); 9823 unlock_user(p, arg1, 0); 9824 return ret; 9825 #endif 9826 case TARGET_NR_reboot: 9827 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9828 /* arg4 must be ignored in all other cases */ 9829 p = lock_user_string(arg4); 9830 if (!p) { 9831 return -TARGET_EFAULT; 9832 } 9833 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9834 unlock_user(p, arg4, 0); 9835 } else { 9836 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9837 } 9838 return ret; 9839 #ifdef TARGET_NR_mmap 9840 case TARGET_NR_mmap: 9841 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9842 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9843 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9844 || defined(TARGET_S390X) 9845 { 9846 abi_ulong *v; 9847 abi_ulong v1, v2, v3, v4, v5, v6; 9848 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9849 return -TARGET_EFAULT; 9850 v1 = tswapal(v[0]); 9851 v2 = tswapal(v[1]); 9852 v3 = tswapal(v[2]); 9853 v4 = tswapal(v[3]); 9854 v5 = tswapal(v[4]); 9855 v6 = tswapal(v[5]); 9856 unlock_user(v, arg1, 0); 9857 ret = get_errno(target_mmap(v1, v2, v3, 9858 target_to_host_bitmask(v4, mmap_flags_tbl), 9859 v5, v6)); 9860 } 9861 #else 9862 /* mmap pointers are always untagged */ 9863 ret = get_errno(target_mmap(arg1, arg2, arg3, 9864 target_to_host_bitmask(arg4, mmap_flags_tbl), 9865 arg5, 9866 arg6)); 9867 #endif 9868 return ret; 9869 #endif 9870 #ifdef TARGET_NR_mmap2 9871 case TARGET_NR_mmap2: 9872 #ifndef MMAP_SHIFT 9873 #define MMAP_SHIFT 12 9874 #endif 9875 ret = target_mmap(arg1, arg2, arg3, 9876 target_to_host_bitmask(arg4, mmap_flags_tbl), 9877 arg5, arg6 << MMAP_SHIFT); 9878 return get_errno(ret); 9879 #endif 9880 case TARGET_NR_munmap: 9881 arg1 = cpu_untagged_addr(cpu, arg1); 9882 return get_errno(target_munmap(arg1, arg2)); 9883 case TARGET_NR_mprotect: 9884 arg1 = cpu_untagged_addr(cpu, arg1); 9885 { 9886 TaskState *ts = cpu->opaque; 9887 /* Special hack to detect libc making the stack executable. */ 9888 if ((arg3 & PROT_GROWSDOWN) 9889 && arg1 >= ts->info->stack_limit 9890 && arg1 <= ts->info->start_stack) { 9891 arg3 &= ~PROT_GROWSDOWN; 9892 arg2 = arg2 + arg1 - ts->info->stack_limit; 9893 arg1 = ts->info->stack_limit; 9894 } 9895 } 9896 return get_errno(target_mprotect(arg1, arg2, arg3)); 9897 #ifdef TARGET_NR_mremap 9898 case TARGET_NR_mremap: 9899 arg1 = cpu_untagged_addr(cpu, arg1); 9900 /* mremap new_addr (arg5) is always untagged */ 9901 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 9902 #endif 9903 /* ??? msync/mlock/munlock are broken for softmmu. */ 9904 #ifdef TARGET_NR_msync 9905 case TARGET_NR_msync: 9906 return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); 9907 #endif 9908 #ifdef TARGET_NR_mlock 9909 case TARGET_NR_mlock: 9910 return get_errno(mlock(g2h(cpu, arg1), arg2)); 9911 #endif 9912 #ifdef TARGET_NR_munlock 9913 case TARGET_NR_munlock: 9914 return get_errno(munlock(g2h(cpu, arg1), arg2)); 9915 #endif 9916 #ifdef TARGET_NR_mlockall 9917 case TARGET_NR_mlockall: 9918 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 9919 #endif 9920 #ifdef TARGET_NR_munlockall 9921 case TARGET_NR_munlockall: 9922 return get_errno(munlockall()); 9923 #endif 9924 #ifdef TARGET_NR_truncate 9925 case TARGET_NR_truncate: 9926 if (!(p = lock_user_string(arg1))) 9927 return -TARGET_EFAULT; 9928 ret = get_errno(truncate(p, arg2)); 9929 unlock_user(p, arg1, 0); 9930 return ret; 9931 #endif 9932 #ifdef TARGET_NR_ftruncate 9933 case TARGET_NR_ftruncate: 9934 return get_errno(ftruncate(arg1, arg2)); 9935 #endif 9936 case TARGET_NR_fchmod: 9937 return get_errno(fchmod(arg1, arg2)); 9938 #if defined(TARGET_NR_fchmodat) 9939 case TARGET_NR_fchmodat: 9940 if (!(p = lock_user_string(arg2))) 9941 return -TARGET_EFAULT; 9942 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 9943 unlock_user(p, arg2, 0); 9944 return ret; 9945 #endif 9946 case TARGET_NR_getpriority: 9947 /* Note that negative values are valid for getpriority, so we must 9948 differentiate based on errno settings. */ 9949 errno = 0; 9950 ret = getpriority(arg1, arg2); 9951 if (ret == -1 && errno != 0) { 9952 return -host_to_target_errno(errno); 9953 } 9954 #ifdef TARGET_ALPHA 9955 /* Return value is the unbiased priority. Signal no error. */ 9956 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; 9957 #else 9958 /* Return value is a biased priority to avoid negative numbers. */ 9959 ret = 20 - ret; 9960 #endif 9961 return ret; 9962 case TARGET_NR_setpriority: 9963 return get_errno(setpriority(arg1, arg2, arg3)); 9964 #ifdef TARGET_NR_statfs 9965 case TARGET_NR_statfs: 9966 if (!(p = lock_user_string(arg1))) { 9967 return -TARGET_EFAULT; 9968 } 9969 ret = get_errno(statfs(path(p), &stfs)); 9970 unlock_user(p, arg1, 0); 9971 convert_statfs: 9972 if (!is_error(ret)) { 9973 struct target_statfs *target_stfs; 9974 9975 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 9976 return -TARGET_EFAULT; 9977 __put_user(stfs.f_type, &target_stfs->f_type); 9978 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9979 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9980 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9981 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9982 __put_user(stfs.f_files, &target_stfs->f_files); 9983 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9984 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9985 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9986 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9987 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9988 #ifdef _STATFS_F_FLAGS 9989 __put_user(stfs.f_flags, &target_stfs->f_flags); 9990 #else 9991 __put_user(0, &target_stfs->f_flags); 9992 #endif 9993 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9994 unlock_user_struct(target_stfs, arg2, 1); 9995 } 9996 return ret; 9997 #endif 9998 #ifdef TARGET_NR_fstatfs 9999 case TARGET_NR_fstatfs: 10000 ret = get_errno(fstatfs(arg1, &stfs)); 10001 goto convert_statfs; 10002 #endif 10003 #ifdef TARGET_NR_statfs64 10004 case TARGET_NR_statfs64: 10005 if (!(p = lock_user_string(arg1))) { 10006 return -TARGET_EFAULT; 10007 } 10008 ret = get_errno(statfs(path(p), &stfs)); 10009 unlock_user(p, arg1, 0); 10010 convert_statfs64: 10011 if (!is_error(ret)) { 10012 struct target_statfs64 *target_stfs; 10013 10014 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 10015 return -TARGET_EFAULT; 10016 __put_user(stfs.f_type, &target_stfs->f_type); 10017 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10018 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10019 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10020 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10021 __put_user(stfs.f_files, &target_stfs->f_files); 10022 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10023 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10024 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10025 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10026 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10027 #ifdef _STATFS_F_FLAGS 10028 __put_user(stfs.f_flags, &target_stfs->f_flags); 10029 #else 10030 __put_user(0, &target_stfs->f_flags); 10031 #endif 10032 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10033 unlock_user_struct(target_stfs, arg3, 1); 10034 } 10035 return ret; 10036 case TARGET_NR_fstatfs64: 10037 ret = get_errno(fstatfs(arg1, &stfs)); 10038 goto convert_statfs64; 10039 #endif 10040 #ifdef TARGET_NR_socketcall 10041 case TARGET_NR_socketcall: 10042 return do_socketcall(arg1, arg2); 10043 #endif 10044 #ifdef TARGET_NR_accept 10045 case TARGET_NR_accept: 10046 return do_accept4(arg1, arg2, arg3, 0); 10047 #endif 10048 #ifdef TARGET_NR_accept4 10049 case TARGET_NR_accept4: 10050 return do_accept4(arg1, arg2, arg3, arg4); 10051 #endif 10052 #ifdef TARGET_NR_bind 10053 case TARGET_NR_bind: 10054 return do_bind(arg1, arg2, arg3); 10055 #endif 10056 #ifdef TARGET_NR_connect 10057 case TARGET_NR_connect: 10058 return do_connect(arg1, arg2, arg3); 10059 #endif 10060 #ifdef TARGET_NR_getpeername 10061 case TARGET_NR_getpeername: 10062 return do_getpeername(arg1, arg2, arg3); 10063 #endif 10064 #ifdef TARGET_NR_getsockname 10065 case TARGET_NR_getsockname: 10066 return do_getsockname(arg1, arg2, arg3); 10067 #endif 10068 #ifdef TARGET_NR_getsockopt 10069 case TARGET_NR_getsockopt: 10070 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 10071 #endif 10072 #ifdef TARGET_NR_listen 10073 case TARGET_NR_listen: 10074 return get_errno(listen(arg1, arg2)); 10075 #endif 10076 #ifdef TARGET_NR_recv 10077 case TARGET_NR_recv: 10078 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 10079 #endif 10080 #ifdef TARGET_NR_recvfrom 10081 case TARGET_NR_recvfrom: 10082 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 10083 #endif 10084 #ifdef TARGET_NR_recvmsg 10085 case TARGET_NR_recvmsg: 10086 return do_sendrecvmsg(arg1, arg2, arg3, 0); 10087 #endif 10088 #ifdef TARGET_NR_send 10089 case TARGET_NR_send: 10090 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 10091 #endif 10092 #ifdef TARGET_NR_sendmsg 10093 case TARGET_NR_sendmsg: 10094 return do_sendrecvmsg(arg1, arg2, arg3, 1); 10095 #endif 10096 #ifdef TARGET_NR_sendmmsg 10097 case TARGET_NR_sendmmsg: 10098 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 10099 #endif 10100 #ifdef TARGET_NR_recvmmsg 10101 case TARGET_NR_recvmmsg: 10102 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 10103 #endif 10104 #ifdef TARGET_NR_sendto 10105 case TARGET_NR_sendto: 10106 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 10107 #endif 10108 #ifdef TARGET_NR_shutdown 10109 case TARGET_NR_shutdown: 10110 return get_errno(shutdown(arg1, arg2)); 10111 #endif 10112 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 10113 case TARGET_NR_getrandom: 10114 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 10115 if (!p) { 10116 return -TARGET_EFAULT; 10117 } 10118 ret = get_errno(getrandom(p, arg2, arg3)); 10119 unlock_user(p, arg1, ret); 10120 return ret; 10121 #endif 10122 #ifdef TARGET_NR_socket 10123 case TARGET_NR_socket: 10124 return do_socket(arg1, arg2, arg3); 10125 #endif 10126 #ifdef TARGET_NR_socketpair 10127 case TARGET_NR_socketpair: 10128 return do_socketpair(arg1, arg2, arg3, arg4); 10129 #endif 10130 #ifdef TARGET_NR_setsockopt 10131 case TARGET_NR_setsockopt: 10132 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 10133 #endif 10134 #if defined(TARGET_NR_syslog) 10135 case TARGET_NR_syslog: 10136 { 10137 int len = arg2; 10138 10139 switch (arg1) { 10140 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 10141 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 10142 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 10143 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 10144 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 10145 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 10146 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 10147 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 10148 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 10149 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 10150 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 10151 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 10152 { 10153 if (len < 0) { 10154 return -TARGET_EINVAL; 10155 } 10156 if (len == 0) { 10157 return 0; 10158 } 10159 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10160 if (!p) { 10161 return -TARGET_EFAULT; 10162 } 10163 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 10164 unlock_user(p, arg2, arg3); 10165 } 10166 return ret; 10167 default: 10168 return -TARGET_EINVAL; 10169 } 10170 } 10171 break; 10172 #endif 10173 case TARGET_NR_setitimer: 10174 { 10175 struct itimerval value, ovalue, *pvalue; 10176 10177 if (arg2) { 10178 pvalue = &value; 10179 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 10180 || copy_from_user_timeval(&pvalue->it_value, 10181 arg2 + sizeof(struct target_timeval))) 10182 return -TARGET_EFAULT; 10183 } else { 10184 pvalue = NULL; 10185 } 10186 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 10187 if (!is_error(ret) && arg3) { 10188 if (copy_to_user_timeval(arg3, 10189 &ovalue.it_interval) 10190 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10191 &ovalue.it_value)) 10192 return -TARGET_EFAULT; 10193 } 10194 } 10195 return ret; 10196 case TARGET_NR_getitimer: 10197 { 10198 struct itimerval value; 10199 10200 ret = get_errno(getitimer(arg1, &value)); 10201 if (!is_error(ret) && arg2) { 10202 if (copy_to_user_timeval(arg2, 10203 &value.it_interval) 10204 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10205 &value.it_value)) 10206 return -TARGET_EFAULT; 10207 } 10208 } 10209 return ret; 10210 #ifdef TARGET_NR_stat 10211 case TARGET_NR_stat: 10212 if (!(p = lock_user_string(arg1))) { 10213 return -TARGET_EFAULT; 10214 } 10215 ret = get_errno(stat(path(p), &st)); 10216 unlock_user(p, arg1, 0); 10217 goto do_stat; 10218 #endif 10219 #ifdef TARGET_NR_lstat 10220 case TARGET_NR_lstat: 10221 if (!(p = lock_user_string(arg1))) { 10222 return -TARGET_EFAULT; 10223 } 10224 ret = get_errno(lstat(path(p), &st)); 10225 unlock_user(p, arg1, 0); 10226 goto do_stat; 10227 #endif 10228 #ifdef TARGET_NR_fstat 10229 case TARGET_NR_fstat: 10230 { 10231 ret = get_errno(fstat(arg1, &st)); 10232 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10233 do_stat: 10234 #endif 10235 if (!is_error(ret)) { 10236 struct target_stat *target_st; 10237 10238 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10239 return -TARGET_EFAULT; 10240 memset(target_st, 0, sizeof(*target_st)); 10241 __put_user(st.st_dev, &target_st->st_dev); 10242 __put_user(st.st_ino, &target_st->st_ino); 10243 __put_user(st.st_mode, &target_st->st_mode); 10244 __put_user(st.st_uid, &target_st->st_uid); 10245 __put_user(st.st_gid, &target_st->st_gid); 10246 __put_user(st.st_nlink, &target_st->st_nlink); 10247 __put_user(st.st_rdev, &target_st->st_rdev); 10248 __put_user(st.st_size, &target_st->st_size); 10249 __put_user(st.st_blksize, &target_st->st_blksize); 10250 __put_user(st.st_blocks, &target_st->st_blocks); 10251 __put_user(st.st_atime, &target_st->target_st_atime); 10252 __put_user(st.st_mtime, &target_st->target_st_mtime); 10253 __put_user(st.st_ctime, &target_st->target_st_ctime); 10254 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC) 10255 __put_user(st.st_atim.tv_nsec, 10256 &target_st->target_st_atime_nsec); 10257 __put_user(st.st_mtim.tv_nsec, 10258 &target_st->target_st_mtime_nsec); 10259 __put_user(st.st_ctim.tv_nsec, 10260 &target_st->target_st_ctime_nsec); 10261 #endif 10262 unlock_user_struct(target_st, arg2, 1); 10263 } 10264 } 10265 return ret; 10266 #endif 10267 case TARGET_NR_vhangup: 10268 return get_errno(vhangup()); 10269 #ifdef TARGET_NR_syscall 10270 case TARGET_NR_syscall: 10271 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10272 arg6, arg7, arg8, 0); 10273 #endif 10274 #if defined(TARGET_NR_wait4) 10275 case TARGET_NR_wait4: 10276 { 10277 int status; 10278 abi_long status_ptr = arg2; 10279 struct rusage rusage, *rusage_ptr; 10280 abi_ulong target_rusage = arg4; 10281 abi_long rusage_err; 10282 if (target_rusage) 10283 rusage_ptr = &rusage; 10284 else 10285 rusage_ptr = NULL; 10286 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10287 if (!is_error(ret)) { 10288 if (status_ptr && ret) { 10289 status = host_to_target_waitstatus(status); 10290 if (put_user_s32(status, status_ptr)) 10291 return -TARGET_EFAULT; 10292 } 10293 if (target_rusage) { 10294 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10295 if (rusage_err) { 10296 ret = rusage_err; 10297 } 10298 } 10299 } 10300 } 10301 return ret; 10302 #endif 10303 #ifdef TARGET_NR_swapoff 10304 case TARGET_NR_swapoff: 10305 if (!(p = lock_user_string(arg1))) 10306 return -TARGET_EFAULT; 10307 ret = get_errno(swapoff(p)); 10308 unlock_user(p, arg1, 0); 10309 return ret; 10310 #endif 10311 case TARGET_NR_sysinfo: 10312 { 10313 struct target_sysinfo *target_value; 10314 struct sysinfo value; 10315 ret = get_errno(sysinfo(&value)); 10316 if (!is_error(ret) && arg1) 10317 { 10318 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10319 return -TARGET_EFAULT; 10320 __put_user(value.uptime, &target_value->uptime); 10321 __put_user(value.loads[0], &target_value->loads[0]); 10322 __put_user(value.loads[1], &target_value->loads[1]); 10323 __put_user(value.loads[2], &target_value->loads[2]); 10324 __put_user(value.totalram, &target_value->totalram); 10325 __put_user(value.freeram, &target_value->freeram); 10326 __put_user(value.sharedram, &target_value->sharedram); 10327 __put_user(value.bufferram, &target_value->bufferram); 10328 __put_user(value.totalswap, &target_value->totalswap); 10329 __put_user(value.freeswap, &target_value->freeswap); 10330 __put_user(value.procs, &target_value->procs); 10331 __put_user(value.totalhigh, &target_value->totalhigh); 10332 __put_user(value.freehigh, &target_value->freehigh); 10333 __put_user(value.mem_unit, &target_value->mem_unit); 10334 unlock_user_struct(target_value, arg1, 1); 10335 } 10336 } 10337 return ret; 10338 #ifdef TARGET_NR_ipc 10339 case TARGET_NR_ipc: 10340 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10341 #endif 10342 #ifdef TARGET_NR_semget 10343 case TARGET_NR_semget: 10344 return get_errno(semget(arg1, arg2, arg3)); 10345 #endif 10346 #ifdef TARGET_NR_semop 10347 case TARGET_NR_semop: 10348 return do_semtimedop(arg1, arg2, arg3, 0, false); 10349 #endif 10350 #ifdef TARGET_NR_semtimedop 10351 case TARGET_NR_semtimedop: 10352 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10353 #endif 10354 #ifdef TARGET_NR_semtimedop_time64 10355 case TARGET_NR_semtimedop_time64: 10356 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10357 #endif 10358 #ifdef TARGET_NR_semctl 10359 case TARGET_NR_semctl: 10360 return do_semctl(arg1, arg2, arg3, arg4); 10361 #endif 10362 #ifdef TARGET_NR_msgctl 10363 case TARGET_NR_msgctl: 10364 return do_msgctl(arg1, arg2, arg3); 10365 #endif 10366 #ifdef TARGET_NR_msgget 10367 case TARGET_NR_msgget: 10368 return get_errno(msgget(arg1, arg2)); 10369 #endif 10370 #ifdef TARGET_NR_msgrcv 10371 case TARGET_NR_msgrcv: 10372 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10373 #endif 10374 #ifdef TARGET_NR_msgsnd 10375 case TARGET_NR_msgsnd: 10376 return do_msgsnd(arg1, arg2, arg3, arg4); 10377 #endif 10378 #ifdef TARGET_NR_shmget 10379 case TARGET_NR_shmget: 10380 return get_errno(shmget(arg1, arg2, arg3)); 10381 #endif 10382 #ifdef TARGET_NR_shmctl 10383 case TARGET_NR_shmctl: 10384 return do_shmctl(arg1, arg2, arg3); 10385 #endif 10386 #ifdef TARGET_NR_shmat 10387 case TARGET_NR_shmat: 10388 return do_shmat(cpu_env, arg1, arg2, arg3); 10389 #endif 10390 #ifdef TARGET_NR_shmdt 10391 case TARGET_NR_shmdt: 10392 return do_shmdt(arg1); 10393 #endif 10394 case TARGET_NR_fsync: 10395 return get_errno(fsync(arg1)); 10396 case TARGET_NR_clone: 10397 /* Linux manages to have three different orderings for its 10398 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 10399 * match the kernel's CONFIG_CLONE_* settings. 10400 * Microblaze is further special in that it uses a sixth 10401 * implicit argument to clone for the TLS pointer. 10402 */ 10403 #if defined(TARGET_MICROBLAZE) 10404 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 10405 #elif defined(TARGET_CLONE_BACKWARDS) 10406 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 10407 #elif defined(TARGET_CLONE_BACKWARDS2) 10408 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 10409 #else 10410 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 10411 #endif 10412 return ret; 10413 #ifdef __NR_exit_group 10414 /* new thread calls */ 10415 case TARGET_NR_exit_group: 10416 preexit_cleanup(cpu_env, arg1); 10417 return get_errno(exit_group(arg1)); 10418 #endif 10419 case TARGET_NR_setdomainname: 10420 if (!(p = lock_user_string(arg1))) 10421 return -TARGET_EFAULT; 10422 ret = get_errno(setdomainname(p, arg2)); 10423 unlock_user(p, arg1, 0); 10424 return ret; 10425 case TARGET_NR_uname: 10426 /* no need to transcode because we use the linux syscall */ 10427 { 10428 struct new_utsname * buf; 10429 10430 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 10431 return -TARGET_EFAULT; 10432 ret = get_errno(sys_uname(buf)); 10433 if (!is_error(ret)) { 10434 /* Overwrite the native machine name with whatever is being 10435 emulated. */ 10436 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 10437 sizeof(buf->machine)); 10438 /* Allow the user to override the reported release. */ 10439 if (qemu_uname_release && *qemu_uname_release) { 10440 g_strlcpy(buf->release, qemu_uname_release, 10441 sizeof(buf->release)); 10442 } 10443 } 10444 unlock_user_struct(buf, arg1, 1); 10445 } 10446 return ret; 10447 #ifdef TARGET_I386 10448 case TARGET_NR_modify_ldt: 10449 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 10450 #if !defined(TARGET_X86_64) 10451 case TARGET_NR_vm86: 10452 return do_vm86(cpu_env, arg1, arg2); 10453 #endif 10454 #endif 10455 #if defined(TARGET_NR_adjtimex) 10456 case TARGET_NR_adjtimex: 10457 { 10458 struct timex host_buf; 10459 10460 if (target_to_host_timex(&host_buf, arg1) != 0) { 10461 return -TARGET_EFAULT; 10462 } 10463 ret = get_errno(adjtimex(&host_buf)); 10464 if (!is_error(ret)) { 10465 if (host_to_target_timex(arg1, &host_buf) != 0) { 10466 return -TARGET_EFAULT; 10467 } 10468 } 10469 } 10470 return ret; 10471 #endif 10472 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 10473 case TARGET_NR_clock_adjtime: 10474 { 10475 struct timex htx, *phtx = &htx; 10476 10477 if (target_to_host_timex(phtx, arg2) != 0) { 10478 return -TARGET_EFAULT; 10479 } 10480 ret = get_errno(clock_adjtime(arg1, phtx)); 10481 if (!is_error(ret) && phtx) { 10482 if (host_to_target_timex(arg2, phtx) != 0) { 10483 return -TARGET_EFAULT; 10484 } 10485 } 10486 } 10487 return ret; 10488 #endif 10489 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 10490 case TARGET_NR_clock_adjtime64: 10491 { 10492 struct timex htx; 10493 10494 if (target_to_host_timex64(&htx, arg2) != 0) { 10495 return -TARGET_EFAULT; 10496 } 10497 ret = get_errno(clock_adjtime(arg1, &htx)); 10498 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 10499 return -TARGET_EFAULT; 10500 } 10501 } 10502 return ret; 10503 #endif 10504 case TARGET_NR_getpgid: 10505 return get_errno(getpgid(arg1)); 10506 case TARGET_NR_fchdir: 10507 return get_errno(fchdir(arg1)); 10508 case TARGET_NR_personality: 10509 return get_errno(personality(arg1)); 10510 #ifdef TARGET_NR__llseek /* Not on alpha */ 10511 case TARGET_NR__llseek: 10512 { 10513 int64_t res; 10514 #if !defined(__NR_llseek) 10515 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 10516 if (res == -1) { 10517 ret = get_errno(res); 10518 } else { 10519 ret = 0; 10520 } 10521 #else 10522 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 10523 #endif 10524 if ((ret == 0) && put_user_s64(res, arg4)) { 10525 return -TARGET_EFAULT; 10526 } 10527 } 10528 return ret; 10529 #endif 10530 #ifdef TARGET_NR_getdents 10531 case TARGET_NR_getdents: 10532 return do_getdents(arg1, arg2, arg3); 10533 #endif /* TARGET_NR_getdents */ 10534 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10535 case TARGET_NR_getdents64: 10536 return do_getdents64(arg1, arg2, arg3); 10537 #endif /* TARGET_NR_getdents64 */ 10538 #if defined(TARGET_NR__newselect) 10539 case TARGET_NR__newselect: 10540 return do_select(arg1, arg2, arg3, arg4, arg5); 10541 #endif 10542 #ifdef TARGET_NR_poll 10543 case TARGET_NR_poll: 10544 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 10545 #endif 10546 #ifdef TARGET_NR_ppoll 10547 case TARGET_NR_ppoll: 10548 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 10549 #endif 10550 #ifdef TARGET_NR_ppoll_time64 10551 case TARGET_NR_ppoll_time64: 10552 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 10553 #endif 10554 case TARGET_NR_flock: 10555 /* NOTE: the flock constant seems to be the same for every 10556 Linux platform */ 10557 return get_errno(safe_flock(arg1, arg2)); 10558 case TARGET_NR_readv: 10559 { 10560 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10561 if (vec != NULL) { 10562 ret = get_errno(safe_readv(arg1, vec, arg3)); 10563 unlock_iovec(vec, arg2, arg3, 1); 10564 } else { 10565 ret = -host_to_target_errno(errno); 10566 } 10567 } 10568 return ret; 10569 case TARGET_NR_writev: 10570 { 10571 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10572 if (vec != NULL) { 10573 ret = get_errno(safe_writev(arg1, vec, arg3)); 10574 unlock_iovec(vec, arg2, arg3, 0); 10575 } else { 10576 ret = -host_to_target_errno(errno); 10577 } 10578 } 10579 return ret; 10580 #if defined(TARGET_NR_preadv) 10581 case TARGET_NR_preadv: 10582 { 10583 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10584 if (vec != NULL) { 10585 unsigned long low, high; 10586 10587 target_to_host_low_high(arg4, arg5, &low, &high); 10588 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10589 unlock_iovec(vec, arg2, arg3, 1); 10590 } else { 10591 ret = -host_to_target_errno(errno); 10592 } 10593 } 10594 return ret; 10595 #endif 10596 #if defined(TARGET_NR_pwritev) 10597 case TARGET_NR_pwritev: 10598 { 10599 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10600 if (vec != NULL) { 10601 unsigned long low, high; 10602 10603 target_to_host_low_high(arg4, arg5, &low, &high); 10604 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10605 unlock_iovec(vec, arg2, arg3, 0); 10606 } else { 10607 ret = -host_to_target_errno(errno); 10608 } 10609 } 10610 return ret; 10611 #endif 10612 case TARGET_NR_getsid: 10613 return get_errno(getsid(arg1)); 10614 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10615 case TARGET_NR_fdatasync: 10616 return get_errno(fdatasync(arg1)); 10617 #endif 10618 case TARGET_NR_sched_getaffinity: 10619 { 10620 unsigned int mask_size; 10621 unsigned long *mask; 10622 10623 /* 10624 * sched_getaffinity needs multiples of ulong, so need to take 10625 * care of mismatches between target ulong and host ulong sizes. 10626 */ 10627 if (arg2 & (sizeof(abi_ulong) - 1)) { 10628 return -TARGET_EINVAL; 10629 } 10630 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10631 10632 mask = alloca(mask_size); 10633 memset(mask, 0, mask_size); 10634 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10635 10636 if (!is_error(ret)) { 10637 if (ret > arg2) { 10638 /* More data returned than the caller's buffer will fit. 10639 * This only happens if sizeof(abi_long) < sizeof(long) 10640 * and the caller passed us a buffer holding an odd number 10641 * of abi_longs. If the host kernel is actually using the 10642 * extra 4 bytes then fail EINVAL; otherwise we can just 10643 * ignore them and only copy the interesting part. 10644 */ 10645 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10646 if (numcpus > arg2 * 8) { 10647 return -TARGET_EINVAL; 10648 } 10649 ret = arg2; 10650 } 10651 10652 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10653 return -TARGET_EFAULT; 10654 } 10655 } 10656 } 10657 return ret; 10658 case TARGET_NR_sched_setaffinity: 10659 { 10660 unsigned int mask_size; 10661 unsigned long *mask; 10662 10663 /* 10664 * sched_setaffinity needs multiples of ulong, so need to take 10665 * care of mismatches between target ulong and host ulong sizes. 10666 */ 10667 if (arg2 & (sizeof(abi_ulong) - 1)) { 10668 return -TARGET_EINVAL; 10669 } 10670 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10671 mask = alloca(mask_size); 10672 10673 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10674 if (ret) { 10675 return ret; 10676 } 10677 10678 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10679 } 10680 case TARGET_NR_getcpu: 10681 { 10682 unsigned cpu, node; 10683 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10684 arg2 ? &node : NULL, 10685 NULL)); 10686 if (is_error(ret)) { 10687 return ret; 10688 } 10689 if (arg1 && put_user_u32(cpu, arg1)) { 10690 return -TARGET_EFAULT; 10691 } 10692 if (arg2 && put_user_u32(node, arg2)) { 10693 return -TARGET_EFAULT; 10694 } 10695 } 10696 return ret; 10697 case TARGET_NR_sched_setparam: 10698 { 10699 struct sched_param *target_schp; 10700 struct sched_param schp; 10701 10702 if (arg2 == 0) { 10703 return -TARGET_EINVAL; 10704 } 10705 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) 10706 return -TARGET_EFAULT; 10707 schp.sched_priority = tswap32(target_schp->sched_priority); 10708 unlock_user_struct(target_schp, arg2, 0); 10709 return get_errno(sched_setparam(arg1, &schp)); 10710 } 10711 case TARGET_NR_sched_getparam: 10712 { 10713 struct sched_param *target_schp; 10714 struct sched_param schp; 10715 10716 if (arg2 == 0) { 10717 return -TARGET_EINVAL; 10718 } 10719 ret = get_errno(sched_getparam(arg1, &schp)); 10720 if (!is_error(ret)) { 10721 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) 10722 return -TARGET_EFAULT; 10723 target_schp->sched_priority = tswap32(schp.sched_priority); 10724 unlock_user_struct(target_schp, arg2, 1); 10725 } 10726 } 10727 return ret; 10728 case TARGET_NR_sched_setscheduler: 10729 { 10730 struct sched_param *target_schp; 10731 struct sched_param schp; 10732 if (arg3 == 0) { 10733 return -TARGET_EINVAL; 10734 } 10735 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) 10736 return -TARGET_EFAULT; 10737 schp.sched_priority = tswap32(target_schp->sched_priority); 10738 unlock_user_struct(target_schp, arg3, 0); 10739 return get_errno(sched_setscheduler(arg1, arg2, &schp)); 10740 } 10741 case TARGET_NR_sched_getscheduler: 10742 return get_errno(sched_getscheduler(arg1)); 10743 case TARGET_NR_sched_yield: 10744 return get_errno(sched_yield()); 10745 case TARGET_NR_sched_get_priority_max: 10746 return get_errno(sched_get_priority_max(arg1)); 10747 case TARGET_NR_sched_get_priority_min: 10748 return get_errno(sched_get_priority_min(arg1)); 10749 #ifdef TARGET_NR_sched_rr_get_interval 10750 case TARGET_NR_sched_rr_get_interval: 10751 { 10752 struct timespec ts; 10753 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10754 if (!is_error(ret)) { 10755 ret = host_to_target_timespec(arg2, &ts); 10756 } 10757 } 10758 return ret; 10759 #endif 10760 #ifdef TARGET_NR_sched_rr_get_interval_time64 10761 case TARGET_NR_sched_rr_get_interval_time64: 10762 { 10763 struct timespec ts; 10764 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10765 if (!is_error(ret)) { 10766 ret = host_to_target_timespec64(arg2, &ts); 10767 } 10768 } 10769 return ret; 10770 #endif 10771 #if defined(TARGET_NR_nanosleep) 10772 case TARGET_NR_nanosleep: 10773 { 10774 struct timespec req, rem; 10775 target_to_host_timespec(&req, arg1); 10776 ret = get_errno(safe_nanosleep(&req, &rem)); 10777 if (is_error(ret) && arg2) { 10778 host_to_target_timespec(arg2, &rem); 10779 } 10780 } 10781 return ret; 10782 #endif 10783 case TARGET_NR_prctl: 10784 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5); 10785 break; 10786 #ifdef TARGET_NR_arch_prctl 10787 case TARGET_NR_arch_prctl: 10788 return do_arch_prctl(cpu_env, arg1, arg2); 10789 #endif 10790 #ifdef TARGET_NR_pread64 10791 case TARGET_NR_pread64: 10792 if (regpairs_aligned(cpu_env, num)) { 10793 arg4 = arg5; 10794 arg5 = arg6; 10795 } 10796 if (arg2 == 0 && arg3 == 0) { 10797 /* Special-case NULL buffer and zero length, which should succeed */ 10798 p = 0; 10799 } else { 10800 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10801 if (!p) { 10802 return -TARGET_EFAULT; 10803 } 10804 } 10805 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 10806 unlock_user(p, arg2, ret); 10807 return ret; 10808 case TARGET_NR_pwrite64: 10809 if (regpairs_aligned(cpu_env, num)) { 10810 arg4 = arg5; 10811 arg5 = arg6; 10812 } 10813 if (arg2 == 0 && arg3 == 0) { 10814 /* Special-case NULL buffer and zero length, which should succeed */ 10815 p = 0; 10816 } else { 10817 p = lock_user(VERIFY_READ, arg2, arg3, 1); 10818 if (!p) { 10819 return -TARGET_EFAULT; 10820 } 10821 } 10822 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 10823 unlock_user(p, arg2, 0); 10824 return ret; 10825 #endif 10826 case TARGET_NR_getcwd: 10827 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 10828 return -TARGET_EFAULT; 10829 ret = get_errno(sys_getcwd1(p, arg2)); 10830 unlock_user(p, arg1, ret); 10831 return ret; 10832 case TARGET_NR_capget: 10833 case TARGET_NR_capset: 10834 { 10835 struct target_user_cap_header *target_header; 10836 struct target_user_cap_data *target_data = NULL; 10837 struct __user_cap_header_struct header; 10838 struct __user_cap_data_struct data[2]; 10839 struct __user_cap_data_struct *dataptr = NULL; 10840 int i, target_datalen; 10841 int data_items = 1; 10842 10843 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 10844 return -TARGET_EFAULT; 10845 } 10846 header.version = tswap32(target_header->version); 10847 header.pid = tswap32(target_header->pid); 10848 10849 if (header.version != _LINUX_CAPABILITY_VERSION) { 10850 /* Version 2 and up takes pointer to two user_data structs */ 10851 data_items = 2; 10852 } 10853 10854 target_datalen = sizeof(*target_data) * data_items; 10855 10856 if (arg2) { 10857 if (num == TARGET_NR_capget) { 10858 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 10859 } else { 10860 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 10861 } 10862 if (!target_data) { 10863 unlock_user_struct(target_header, arg1, 0); 10864 return -TARGET_EFAULT; 10865 } 10866 10867 if (num == TARGET_NR_capset) { 10868 for (i = 0; i < data_items; i++) { 10869 data[i].effective = tswap32(target_data[i].effective); 10870 data[i].permitted = tswap32(target_data[i].permitted); 10871 data[i].inheritable = tswap32(target_data[i].inheritable); 10872 } 10873 } 10874 10875 dataptr = data; 10876 } 10877 10878 if (num == TARGET_NR_capget) { 10879 ret = get_errno(capget(&header, dataptr)); 10880 } else { 10881 ret = get_errno(capset(&header, dataptr)); 10882 } 10883 10884 /* The kernel always updates version for both capget and capset */ 10885 target_header->version = tswap32(header.version); 10886 unlock_user_struct(target_header, arg1, 1); 10887 10888 if (arg2) { 10889 if (num == TARGET_NR_capget) { 10890 for (i = 0; i < data_items; i++) { 10891 target_data[i].effective = tswap32(data[i].effective); 10892 target_data[i].permitted = tswap32(data[i].permitted); 10893 target_data[i].inheritable = tswap32(data[i].inheritable); 10894 } 10895 unlock_user(target_data, arg2, target_datalen); 10896 } else { 10897 unlock_user(target_data, arg2, 0); 10898 } 10899 } 10900 return ret; 10901 } 10902 case TARGET_NR_sigaltstack: 10903 return do_sigaltstack(arg1, arg2, cpu_env); 10904 10905 #ifdef CONFIG_SENDFILE 10906 #ifdef TARGET_NR_sendfile 10907 case TARGET_NR_sendfile: 10908 { 10909 off_t *offp = NULL; 10910 off_t off; 10911 if (arg3) { 10912 ret = get_user_sal(off, arg3); 10913 if (is_error(ret)) { 10914 return ret; 10915 } 10916 offp = &off; 10917 } 10918 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 10919 if (!is_error(ret) && arg3) { 10920 abi_long ret2 = put_user_sal(off, arg3); 10921 if (is_error(ret2)) { 10922 ret = ret2; 10923 } 10924 } 10925 return ret; 10926 } 10927 #endif 10928 #ifdef TARGET_NR_sendfile64 10929 case TARGET_NR_sendfile64: 10930 { 10931 off_t *offp = NULL; 10932 off_t off; 10933 if (arg3) { 10934 ret = get_user_s64(off, arg3); 10935 if (is_error(ret)) { 10936 return ret; 10937 } 10938 offp = &off; 10939 } 10940 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 10941 if (!is_error(ret) && arg3) { 10942 abi_long ret2 = put_user_s64(off, arg3); 10943 if (is_error(ret2)) { 10944 ret = ret2; 10945 } 10946 } 10947 return ret; 10948 } 10949 #endif 10950 #endif 10951 #ifdef TARGET_NR_vfork 10952 case TARGET_NR_vfork: 10953 return get_errno(do_fork(cpu_env, 10954 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 10955 0, 0, 0, 0)); 10956 #endif 10957 #ifdef TARGET_NR_ugetrlimit 10958 case TARGET_NR_ugetrlimit: 10959 { 10960 struct rlimit rlim; 10961 int resource = target_to_host_resource(arg1); 10962 ret = get_errno(getrlimit(resource, &rlim)); 10963 if (!is_error(ret)) { 10964 struct target_rlimit *target_rlim; 10965 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 10966 return -TARGET_EFAULT; 10967 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 10968 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 10969 unlock_user_struct(target_rlim, arg2, 1); 10970 } 10971 return ret; 10972 } 10973 #endif 10974 #ifdef TARGET_NR_truncate64 10975 case TARGET_NR_truncate64: 10976 if (!(p = lock_user_string(arg1))) 10977 return -TARGET_EFAULT; 10978 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 10979 unlock_user(p, arg1, 0); 10980 return ret; 10981 #endif 10982 #ifdef TARGET_NR_ftruncate64 10983 case TARGET_NR_ftruncate64: 10984 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 10985 #endif 10986 #ifdef TARGET_NR_stat64 10987 case TARGET_NR_stat64: 10988 if (!(p = lock_user_string(arg1))) { 10989 return -TARGET_EFAULT; 10990 } 10991 ret = get_errno(stat(path(p), &st)); 10992 unlock_user(p, arg1, 0); 10993 if (!is_error(ret)) 10994 ret = host_to_target_stat64(cpu_env, arg2, &st); 10995 return ret; 10996 #endif 10997 #ifdef TARGET_NR_lstat64 10998 case TARGET_NR_lstat64: 10999 if (!(p = lock_user_string(arg1))) { 11000 return -TARGET_EFAULT; 11001 } 11002 ret = get_errno(lstat(path(p), &st)); 11003 unlock_user(p, arg1, 0); 11004 if (!is_error(ret)) 11005 ret = host_to_target_stat64(cpu_env, arg2, &st); 11006 return ret; 11007 #endif 11008 #ifdef TARGET_NR_fstat64 11009 case TARGET_NR_fstat64: 11010 ret = get_errno(fstat(arg1, &st)); 11011 if (!is_error(ret)) 11012 ret = host_to_target_stat64(cpu_env, arg2, &st); 11013 return ret; 11014 #endif 11015 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11016 #ifdef TARGET_NR_fstatat64 11017 case TARGET_NR_fstatat64: 11018 #endif 11019 #ifdef TARGET_NR_newfstatat 11020 case TARGET_NR_newfstatat: 11021 #endif 11022 if (!(p = lock_user_string(arg2))) { 11023 return -TARGET_EFAULT; 11024 } 11025 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11026 unlock_user(p, arg2, 0); 11027 if (!is_error(ret)) 11028 ret = host_to_target_stat64(cpu_env, arg3, &st); 11029 return ret; 11030 #endif 11031 #if defined(TARGET_NR_statx) 11032 case TARGET_NR_statx: 11033 { 11034 struct target_statx *target_stx; 11035 int dirfd = arg1; 11036 int flags = arg3; 11037 11038 p = lock_user_string(arg2); 11039 if (p == NULL) { 11040 return -TARGET_EFAULT; 11041 } 11042 #if defined(__NR_statx) 11043 { 11044 /* 11045 * It is assumed that struct statx is architecture independent. 11046 */ 11047 struct target_statx host_stx; 11048 int mask = arg4; 11049 11050 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11051 if (!is_error(ret)) { 11052 if (host_to_target_statx(&host_stx, arg5) != 0) { 11053 unlock_user(p, arg2, 0); 11054 return -TARGET_EFAULT; 11055 } 11056 } 11057 11058 if (ret != -TARGET_ENOSYS) { 11059 unlock_user(p, arg2, 0); 11060 return ret; 11061 } 11062 } 11063 #endif 11064 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11065 unlock_user(p, arg2, 0); 11066 11067 if (!is_error(ret)) { 11068 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11069 return -TARGET_EFAULT; 11070 } 11071 memset(target_stx, 0, sizeof(*target_stx)); 11072 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11073 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11074 __put_user(st.st_ino, &target_stx->stx_ino); 11075 __put_user(st.st_mode, &target_stx->stx_mode); 11076 __put_user(st.st_uid, &target_stx->stx_uid); 11077 __put_user(st.st_gid, &target_stx->stx_gid); 11078 __put_user(st.st_nlink, &target_stx->stx_nlink); 11079 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11080 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11081 __put_user(st.st_size, &target_stx->stx_size); 11082 __put_user(st.st_blksize, &target_stx->stx_blksize); 11083 __put_user(st.st_blocks, &target_stx->stx_blocks); 11084 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11085 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11086 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11087 unlock_user_struct(target_stx, arg5, 1); 11088 } 11089 } 11090 return ret; 11091 #endif 11092 #ifdef TARGET_NR_lchown 11093 case TARGET_NR_lchown: 11094 if (!(p = lock_user_string(arg1))) 11095 return -TARGET_EFAULT; 11096 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11097 unlock_user(p, arg1, 0); 11098 return ret; 11099 #endif 11100 #ifdef TARGET_NR_getuid 11101 case TARGET_NR_getuid: 11102 return get_errno(high2lowuid(getuid())); 11103 #endif 11104 #ifdef TARGET_NR_getgid 11105 case TARGET_NR_getgid: 11106 return get_errno(high2lowgid(getgid())); 11107 #endif 11108 #ifdef TARGET_NR_geteuid 11109 case TARGET_NR_geteuid: 11110 return get_errno(high2lowuid(geteuid())); 11111 #endif 11112 #ifdef TARGET_NR_getegid 11113 case TARGET_NR_getegid: 11114 return get_errno(high2lowgid(getegid())); 11115 #endif 11116 case TARGET_NR_setreuid: 11117 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11118 case TARGET_NR_setregid: 11119 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11120 case TARGET_NR_getgroups: 11121 { 11122 int gidsetsize = arg1; 11123 target_id *target_grouplist; 11124 gid_t *grouplist; 11125 int i; 11126 11127 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11128 ret = get_errno(getgroups(gidsetsize, grouplist)); 11129 if (gidsetsize == 0) 11130 return ret; 11131 if (!is_error(ret)) { 11132 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 11133 if (!target_grouplist) 11134 return -TARGET_EFAULT; 11135 for(i = 0;i < ret; i++) 11136 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11137 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 11138 } 11139 } 11140 return ret; 11141 case TARGET_NR_setgroups: 11142 { 11143 int gidsetsize = arg1; 11144 target_id *target_grouplist; 11145 gid_t *grouplist = NULL; 11146 int i; 11147 if (gidsetsize) { 11148 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11149 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 11150 if (!target_grouplist) { 11151 return -TARGET_EFAULT; 11152 } 11153 for (i = 0; i < gidsetsize; i++) { 11154 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11155 } 11156 unlock_user(target_grouplist, arg2, 0); 11157 } 11158 return get_errno(setgroups(gidsetsize, grouplist)); 11159 } 11160 case TARGET_NR_fchown: 11161 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11162 #if defined(TARGET_NR_fchownat) 11163 case TARGET_NR_fchownat: 11164 if (!(p = lock_user_string(arg2))) 11165 return -TARGET_EFAULT; 11166 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11167 low2highgid(arg4), arg5)); 11168 unlock_user(p, arg2, 0); 11169 return ret; 11170 #endif 11171 #ifdef TARGET_NR_setresuid 11172 case TARGET_NR_setresuid: 11173 return get_errno(sys_setresuid(low2highuid(arg1), 11174 low2highuid(arg2), 11175 low2highuid(arg3))); 11176 #endif 11177 #ifdef TARGET_NR_getresuid 11178 case TARGET_NR_getresuid: 11179 { 11180 uid_t ruid, euid, suid; 11181 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11182 if (!is_error(ret)) { 11183 if (put_user_id(high2lowuid(ruid), arg1) 11184 || put_user_id(high2lowuid(euid), arg2) 11185 || put_user_id(high2lowuid(suid), arg3)) 11186 return -TARGET_EFAULT; 11187 } 11188 } 11189 return ret; 11190 #endif 11191 #ifdef TARGET_NR_getresgid 11192 case TARGET_NR_setresgid: 11193 return get_errno(sys_setresgid(low2highgid(arg1), 11194 low2highgid(arg2), 11195 low2highgid(arg3))); 11196 #endif 11197 #ifdef TARGET_NR_getresgid 11198 case TARGET_NR_getresgid: 11199 { 11200 gid_t rgid, egid, sgid; 11201 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11202 if (!is_error(ret)) { 11203 if (put_user_id(high2lowgid(rgid), arg1) 11204 || put_user_id(high2lowgid(egid), arg2) 11205 || put_user_id(high2lowgid(sgid), arg3)) 11206 return -TARGET_EFAULT; 11207 } 11208 } 11209 return ret; 11210 #endif 11211 #ifdef TARGET_NR_chown 11212 case TARGET_NR_chown: 11213 if (!(p = lock_user_string(arg1))) 11214 return -TARGET_EFAULT; 11215 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11216 unlock_user(p, arg1, 0); 11217 return ret; 11218 #endif 11219 case TARGET_NR_setuid: 11220 return get_errno(sys_setuid(low2highuid(arg1))); 11221 case TARGET_NR_setgid: 11222 return get_errno(sys_setgid(low2highgid(arg1))); 11223 case TARGET_NR_setfsuid: 11224 return get_errno(setfsuid(arg1)); 11225 case TARGET_NR_setfsgid: 11226 return get_errno(setfsgid(arg1)); 11227 11228 #ifdef TARGET_NR_lchown32 11229 case TARGET_NR_lchown32: 11230 if (!(p = lock_user_string(arg1))) 11231 return -TARGET_EFAULT; 11232 ret = get_errno(lchown(p, arg2, arg3)); 11233 unlock_user(p, arg1, 0); 11234 return ret; 11235 #endif 11236 #ifdef TARGET_NR_getuid32 11237 case TARGET_NR_getuid32: 11238 return get_errno(getuid()); 11239 #endif 11240 11241 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11242 /* Alpha specific */ 11243 case TARGET_NR_getxuid: 11244 { 11245 uid_t euid; 11246 euid=geteuid(); 11247 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; 11248 } 11249 return get_errno(getuid()); 11250 #endif 11251 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11252 /* Alpha specific */ 11253 case TARGET_NR_getxgid: 11254 { 11255 uid_t egid; 11256 egid=getegid(); 11257 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; 11258 } 11259 return get_errno(getgid()); 11260 #endif 11261 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11262 /* Alpha specific */ 11263 case TARGET_NR_osf_getsysinfo: 11264 ret = -TARGET_EOPNOTSUPP; 11265 switch (arg1) { 11266 case TARGET_GSI_IEEE_FP_CONTROL: 11267 { 11268 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11269 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr; 11270 11271 swcr &= ~SWCR_STATUS_MASK; 11272 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 11273 11274 if (put_user_u64 (swcr, arg2)) 11275 return -TARGET_EFAULT; 11276 ret = 0; 11277 } 11278 break; 11279 11280 /* case GSI_IEEE_STATE_AT_SIGNAL: 11281 -- Not implemented in linux kernel. 11282 case GSI_UACPROC: 11283 -- Retrieves current unaligned access state; not much used. 11284 case GSI_PROC_TYPE: 11285 -- Retrieves implver information; surely not used. 11286 case GSI_GET_HWRPB: 11287 -- Grabs a copy of the HWRPB; surely not used. 11288 */ 11289 } 11290 return ret; 11291 #endif 11292 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 11293 /* Alpha specific */ 11294 case TARGET_NR_osf_setsysinfo: 11295 ret = -TARGET_EOPNOTSUPP; 11296 switch (arg1) { 11297 case TARGET_SSI_IEEE_FP_CONTROL: 11298 { 11299 uint64_t swcr, fpcr; 11300 11301 if (get_user_u64 (swcr, arg2)) { 11302 return -TARGET_EFAULT; 11303 } 11304 11305 /* 11306 * The kernel calls swcr_update_status to update the 11307 * status bits from the fpcr at every point that it 11308 * could be queried. Therefore, we store the status 11309 * bits only in FPCR. 11310 */ 11311 ((CPUAlphaState *)cpu_env)->swcr 11312 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 11313 11314 fpcr = cpu_alpha_load_fpcr(cpu_env); 11315 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11316 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11317 cpu_alpha_store_fpcr(cpu_env, fpcr); 11318 ret = 0; 11319 } 11320 break; 11321 11322 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11323 { 11324 uint64_t exc, fpcr, fex; 11325 11326 if (get_user_u64(exc, arg2)) { 11327 return -TARGET_EFAULT; 11328 } 11329 exc &= SWCR_STATUS_MASK; 11330 fpcr = cpu_alpha_load_fpcr(cpu_env); 11331 11332 /* Old exceptions are not signaled. */ 11333 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11334 fex = exc & ~fex; 11335 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11336 fex &= ((CPUArchState *)cpu_env)->swcr; 11337 11338 /* Update the hardware fpcr. */ 11339 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11340 cpu_alpha_store_fpcr(cpu_env, fpcr); 11341 11342 if (fex) { 11343 int si_code = TARGET_FPE_FLTUNK; 11344 target_siginfo_t info; 11345 11346 if (fex & SWCR_TRAP_ENABLE_DNO) { 11347 si_code = TARGET_FPE_FLTUND; 11348 } 11349 if (fex & SWCR_TRAP_ENABLE_INE) { 11350 si_code = TARGET_FPE_FLTRES; 11351 } 11352 if (fex & SWCR_TRAP_ENABLE_UNF) { 11353 si_code = TARGET_FPE_FLTUND; 11354 } 11355 if (fex & SWCR_TRAP_ENABLE_OVF) { 11356 si_code = TARGET_FPE_FLTOVF; 11357 } 11358 if (fex & SWCR_TRAP_ENABLE_DZE) { 11359 si_code = TARGET_FPE_FLTDIV; 11360 } 11361 if (fex & SWCR_TRAP_ENABLE_INV) { 11362 si_code = TARGET_FPE_FLTINV; 11363 } 11364 11365 info.si_signo = SIGFPE; 11366 info.si_errno = 0; 11367 info.si_code = si_code; 11368 info._sifields._sigfault._addr 11369 = ((CPUArchState *)cpu_env)->pc; 11370 queue_signal((CPUArchState *)cpu_env, info.si_signo, 11371 QEMU_SI_FAULT, &info); 11372 } 11373 ret = 0; 11374 } 11375 break; 11376 11377 /* case SSI_NVPAIRS: 11378 -- Used with SSIN_UACPROC to enable unaligned accesses. 11379 case SSI_IEEE_STATE_AT_SIGNAL: 11380 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11381 -- Not implemented in linux kernel 11382 */ 11383 } 11384 return ret; 11385 #endif 11386 #ifdef TARGET_NR_osf_sigprocmask 11387 /* Alpha specific. */ 11388 case TARGET_NR_osf_sigprocmask: 11389 { 11390 abi_ulong mask; 11391 int how; 11392 sigset_t set, oldset; 11393 11394 switch(arg1) { 11395 case TARGET_SIG_BLOCK: 11396 how = SIG_BLOCK; 11397 break; 11398 case TARGET_SIG_UNBLOCK: 11399 how = SIG_UNBLOCK; 11400 break; 11401 case TARGET_SIG_SETMASK: 11402 how = SIG_SETMASK; 11403 break; 11404 default: 11405 return -TARGET_EINVAL; 11406 } 11407 mask = arg2; 11408 target_to_host_old_sigset(&set, &mask); 11409 ret = do_sigprocmask(how, &set, &oldset); 11410 if (!ret) { 11411 host_to_target_old_sigset(&mask, &oldset); 11412 ret = mask; 11413 } 11414 } 11415 return ret; 11416 #endif 11417 11418 #ifdef TARGET_NR_getgid32 11419 case TARGET_NR_getgid32: 11420 return get_errno(getgid()); 11421 #endif 11422 #ifdef TARGET_NR_geteuid32 11423 case TARGET_NR_geteuid32: 11424 return get_errno(geteuid()); 11425 #endif 11426 #ifdef TARGET_NR_getegid32 11427 case TARGET_NR_getegid32: 11428 return get_errno(getegid()); 11429 #endif 11430 #ifdef TARGET_NR_setreuid32 11431 case TARGET_NR_setreuid32: 11432 return get_errno(setreuid(arg1, arg2)); 11433 #endif 11434 #ifdef TARGET_NR_setregid32 11435 case TARGET_NR_setregid32: 11436 return get_errno(setregid(arg1, arg2)); 11437 #endif 11438 #ifdef TARGET_NR_getgroups32 11439 case TARGET_NR_getgroups32: 11440 { 11441 int gidsetsize = arg1; 11442 uint32_t *target_grouplist; 11443 gid_t *grouplist; 11444 int i; 11445 11446 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11447 ret = get_errno(getgroups(gidsetsize, grouplist)); 11448 if (gidsetsize == 0) 11449 return ret; 11450 if (!is_error(ret)) { 11451 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11452 if (!target_grouplist) { 11453 return -TARGET_EFAULT; 11454 } 11455 for(i = 0;i < ret; i++) 11456 target_grouplist[i] = tswap32(grouplist[i]); 11457 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11458 } 11459 } 11460 return ret; 11461 #endif 11462 #ifdef TARGET_NR_setgroups32 11463 case TARGET_NR_setgroups32: 11464 { 11465 int gidsetsize = arg1; 11466 uint32_t *target_grouplist; 11467 gid_t *grouplist; 11468 int i; 11469 11470 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11471 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11472 if (!target_grouplist) { 11473 return -TARGET_EFAULT; 11474 } 11475 for(i = 0;i < gidsetsize; i++) 11476 grouplist[i] = tswap32(target_grouplist[i]); 11477 unlock_user(target_grouplist, arg2, 0); 11478 return get_errno(setgroups(gidsetsize, grouplist)); 11479 } 11480 #endif 11481 #ifdef TARGET_NR_fchown32 11482 case TARGET_NR_fchown32: 11483 return get_errno(fchown(arg1, arg2, arg3)); 11484 #endif 11485 #ifdef TARGET_NR_setresuid32 11486 case TARGET_NR_setresuid32: 11487 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11488 #endif 11489 #ifdef TARGET_NR_getresuid32 11490 case TARGET_NR_getresuid32: 11491 { 11492 uid_t ruid, euid, suid; 11493 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11494 if (!is_error(ret)) { 11495 if (put_user_u32(ruid, arg1) 11496 || put_user_u32(euid, arg2) 11497 || put_user_u32(suid, arg3)) 11498 return -TARGET_EFAULT; 11499 } 11500 } 11501 return ret; 11502 #endif 11503 #ifdef TARGET_NR_setresgid32 11504 case TARGET_NR_setresgid32: 11505 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11506 #endif 11507 #ifdef TARGET_NR_getresgid32 11508 case TARGET_NR_getresgid32: 11509 { 11510 gid_t rgid, egid, sgid; 11511 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11512 if (!is_error(ret)) { 11513 if (put_user_u32(rgid, arg1) 11514 || put_user_u32(egid, arg2) 11515 || put_user_u32(sgid, arg3)) 11516 return -TARGET_EFAULT; 11517 } 11518 } 11519 return ret; 11520 #endif 11521 #ifdef TARGET_NR_chown32 11522 case TARGET_NR_chown32: 11523 if (!(p = lock_user_string(arg1))) 11524 return -TARGET_EFAULT; 11525 ret = get_errno(chown(p, arg2, arg3)); 11526 unlock_user(p, arg1, 0); 11527 return ret; 11528 #endif 11529 #ifdef TARGET_NR_setuid32 11530 case TARGET_NR_setuid32: 11531 return get_errno(sys_setuid(arg1)); 11532 #endif 11533 #ifdef TARGET_NR_setgid32 11534 case TARGET_NR_setgid32: 11535 return get_errno(sys_setgid(arg1)); 11536 #endif 11537 #ifdef TARGET_NR_setfsuid32 11538 case TARGET_NR_setfsuid32: 11539 return get_errno(setfsuid(arg1)); 11540 #endif 11541 #ifdef TARGET_NR_setfsgid32 11542 case TARGET_NR_setfsgid32: 11543 return get_errno(setfsgid(arg1)); 11544 #endif 11545 #ifdef TARGET_NR_mincore 11546 case TARGET_NR_mincore: 11547 { 11548 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11549 if (!a) { 11550 return -TARGET_ENOMEM; 11551 } 11552 p = lock_user_string(arg3); 11553 if (!p) { 11554 ret = -TARGET_EFAULT; 11555 } else { 11556 ret = get_errno(mincore(a, arg2, p)); 11557 unlock_user(p, arg3, ret); 11558 } 11559 unlock_user(a, arg1, 0); 11560 } 11561 return ret; 11562 #endif 11563 #ifdef TARGET_NR_arm_fadvise64_64 11564 case TARGET_NR_arm_fadvise64_64: 11565 /* arm_fadvise64_64 looks like fadvise64_64 but 11566 * with different argument order: fd, advice, offset, len 11567 * rather than the usual fd, offset, len, advice. 11568 * Note that offset and len are both 64-bit so appear as 11569 * pairs of 32-bit registers. 11570 */ 11571 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11572 target_offset64(arg5, arg6), arg2); 11573 return -host_to_target_errno(ret); 11574 #endif 11575 11576 #if TARGET_ABI_BITS == 32 11577 11578 #ifdef TARGET_NR_fadvise64_64 11579 case TARGET_NR_fadvise64_64: 11580 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11581 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11582 ret = arg2; 11583 arg2 = arg3; 11584 arg3 = arg4; 11585 arg4 = arg5; 11586 arg5 = arg6; 11587 arg6 = ret; 11588 #else 11589 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11590 if (regpairs_aligned(cpu_env, num)) { 11591 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11592 arg2 = arg3; 11593 arg3 = arg4; 11594 arg4 = arg5; 11595 arg5 = arg6; 11596 arg6 = arg7; 11597 } 11598 #endif 11599 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11600 target_offset64(arg4, arg5), arg6); 11601 return -host_to_target_errno(ret); 11602 #endif 11603 11604 #ifdef TARGET_NR_fadvise64 11605 case TARGET_NR_fadvise64: 11606 /* 5 args: fd, offset (high, low), len, advice */ 11607 if (regpairs_aligned(cpu_env, num)) { 11608 /* offset is in (3,4), len in 5 and advice in 6 */ 11609 arg2 = arg3; 11610 arg3 = arg4; 11611 arg4 = arg5; 11612 arg5 = arg6; 11613 } 11614 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11615 return -host_to_target_errno(ret); 11616 #endif 11617 11618 #else /* not a 32-bit ABI */ 11619 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11620 #ifdef TARGET_NR_fadvise64_64 11621 case TARGET_NR_fadvise64_64: 11622 #endif 11623 #ifdef TARGET_NR_fadvise64 11624 case TARGET_NR_fadvise64: 11625 #endif 11626 #ifdef TARGET_S390X 11627 switch (arg4) { 11628 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11629 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11630 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11631 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11632 default: break; 11633 } 11634 #endif 11635 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11636 #endif 11637 #endif /* end of 64-bit ABI fadvise handling */ 11638 11639 #ifdef TARGET_NR_madvise 11640 case TARGET_NR_madvise: 11641 /* A straight passthrough may not be safe because qemu sometimes 11642 turns private file-backed mappings into anonymous mappings. 11643 This will break MADV_DONTNEED. 11644 This is a hint, so ignoring and returning success is ok. */ 11645 return 0; 11646 #endif 11647 #ifdef TARGET_NR_fcntl64 11648 case TARGET_NR_fcntl64: 11649 { 11650 int cmd; 11651 struct flock64 fl; 11652 from_flock64_fn *copyfrom = copy_from_user_flock64; 11653 to_flock64_fn *copyto = copy_to_user_flock64; 11654 11655 #ifdef TARGET_ARM 11656 if (!((CPUARMState *)cpu_env)->eabi) { 11657 copyfrom = copy_from_user_oabi_flock64; 11658 copyto = copy_to_user_oabi_flock64; 11659 } 11660 #endif 11661 11662 cmd = target_to_host_fcntl_cmd(arg2); 11663 if (cmd == -TARGET_EINVAL) { 11664 return cmd; 11665 } 11666 11667 switch(arg2) { 11668 case TARGET_F_GETLK64: 11669 ret = copyfrom(&fl, arg3); 11670 if (ret) { 11671 break; 11672 } 11673 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11674 if (ret == 0) { 11675 ret = copyto(arg3, &fl); 11676 } 11677 break; 11678 11679 case TARGET_F_SETLK64: 11680 case TARGET_F_SETLKW64: 11681 ret = copyfrom(&fl, arg3); 11682 if (ret) { 11683 break; 11684 } 11685 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11686 break; 11687 default: 11688 ret = do_fcntl(arg1, arg2, arg3); 11689 break; 11690 } 11691 return ret; 11692 } 11693 #endif 11694 #ifdef TARGET_NR_cacheflush 11695 case TARGET_NR_cacheflush: 11696 /* self-modifying code is handled automatically, so nothing needed */ 11697 return 0; 11698 #endif 11699 #ifdef TARGET_NR_getpagesize 11700 case TARGET_NR_getpagesize: 11701 return TARGET_PAGE_SIZE; 11702 #endif 11703 case TARGET_NR_gettid: 11704 return get_errno(sys_gettid()); 11705 #ifdef TARGET_NR_readahead 11706 case TARGET_NR_readahead: 11707 #if TARGET_ABI_BITS == 32 11708 if (regpairs_aligned(cpu_env, num)) { 11709 arg2 = arg3; 11710 arg3 = arg4; 11711 arg4 = arg5; 11712 } 11713 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11714 #else 11715 ret = get_errno(readahead(arg1, arg2, arg3)); 11716 #endif 11717 return ret; 11718 #endif 11719 #ifdef CONFIG_ATTR 11720 #ifdef TARGET_NR_setxattr 11721 case TARGET_NR_listxattr: 11722 case TARGET_NR_llistxattr: 11723 { 11724 void *p, *b = 0; 11725 if (arg2) { 11726 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11727 if (!b) { 11728 return -TARGET_EFAULT; 11729 } 11730 } 11731 p = lock_user_string(arg1); 11732 if (p) { 11733 if (num == TARGET_NR_listxattr) { 11734 ret = get_errno(listxattr(p, b, arg3)); 11735 } else { 11736 ret = get_errno(llistxattr(p, b, arg3)); 11737 } 11738 } else { 11739 ret = -TARGET_EFAULT; 11740 } 11741 unlock_user(p, arg1, 0); 11742 unlock_user(b, arg2, arg3); 11743 return ret; 11744 } 11745 case TARGET_NR_flistxattr: 11746 { 11747 void *b = 0; 11748 if (arg2) { 11749 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11750 if (!b) { 11751 return -TARGET_EFAULT; 11752 } 11753 } 11754 ret = get_errno(flistxattr(arg1, b, arg3)); 11755 unlock_user(b, arg2, arg3); 11756 return ret; 11757 } 11758 case TARGET_NR_setxattr: 11759 case TARGET_NR_lsetxattr: 11760 { 11761 void *p, *n, *v = 0; 11762 if (arg3) { 11763 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11764 if (!v) { 11765 return -TARGET_EFAULT; 11766 } 11767 } 11768 p = lock_user_string(arg1); 11769 n = lock_user_string(arg2); 11770 if (p && n) { 11771 if (num == TARGET_NR_setxattr) { 11772 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 11773 } else { 11774 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 11775 } 11776 } else { 11777 ret = -TARGET_EFAULT; 11778 } 11779 unlock_user(p, arg1, 0); 11780 unlock_user(n, arg2, 0); 11781 unlock_user(v, arg3, 0); 11782 } 11783 return ret; 11784 case TARGET_NR_fsetxattr: 11785 { 11786 void *n, *v = 0; 11787 if (arg3) { 11788 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11789 if (!v) { 11790 return -TARGET_EFAULT; 11791 } 11792 } 11793 n = lock_user_string(arg2); 11794 if (n) { 11795 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 11796 } else { 11797 ret = -TARGET_EFAULT; 11798 } 11799 unlock_user(n, arg2, 0); 11800 unlock_user(v, arg3, 0); 11801 } 11802 return ret; 11803 case TARGET_NR_getxattr: 11804 case TARGET_NR_lgetxattr: 11805 { 11806 void *p, *n, *v = 0; 11807 if (arg3) { 11808 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 11809 if (!v) { 11810 return -TARGET_EFAULT; 11811 } 11812 } 11813 p = lock_user_string(arg1); 11814 n = lock_user_string(arg2); 11815 if (p && n) { 11816 if (num == TARGET_NR_getxattr) { 11817 ret = get_errno(getxattr(p, n, v, arg4)); 11818 } else { 11819 ret = get_errno(lgetxattr(p, n, v, arg4)); 11820 } 11821 } else { 11822 ret = -TARGET_EFAULT; 11823 } 11824 unlock_user(p, arg1, 0); 11825 unlock_user(n, arg2, 0); 11826 unlock_user(v, arg3, arg4); 11827 } 11828 return ret; 11829 case TARGET_NR_fgetxattr: 11830 { 11831 void *n, *v = 0; 11832 if (arg3) { 11833 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 11834 if (!v) { 11835 return -TARGET_EFAULT; 11836 } 11837 } 11838 n = lock_user_string(arg2); 11839 if (n) { 11840 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 11841 } else { 11842 ret = -TARGET_EFAULT; 11843 } 11844 unlock_user(n, arg2, 0); 11845 unlock_user(v, arg3, arg4); 11846 } 11847 return ret; 11848 case TARGET_NR_removexattr: 11849 case TARGET_NR_lremovexattr: 11850 { 11851 void *p, *n; 11852 p = lock_user_string(arg1); 11853 n = lock_user_string(arg2); 11854 if (p && n) { 11855 if (num == TARGET_NR_removexattr) { 11856 ret = get_errno(removexattr(p, n)); 11857 } else { 11858 ret = get_errno(lremovexattr(p, n)); 11859 } 11860 } else { 11861 ret = -TARGET_EFAULT; 11862 } 11863 unlock_user(p, arg1, 0); 11864 unlock_user(n, arg2, 0); 11865 } 11866 return ret; 11867 case TARGET_NR_fremovexattr: 11868 { 11869 void *n; 11870 n = lock_user_string(arg2); 11871 if (n) { 11872 ret = get_errno(fremovexattr(arg1, n)); 11873 } else { 11874 ret = -TARGET_EFAULT; 11875 } 11876 unlock_user(n, arg2, 0); 11877 } 11878 return ret; 11879 #endif 11880 #endif /* CONFIG_ATTR */ 11881 #ifdef TARGET_NR_set_thread_area 11882 case TARGET_NR_set_thread_area: 11883 #if defined(TARGET_MIPS) 11884 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; 11885 return 0; 11886 #elif defined(TARGET_CRIS) 11887 if (arg1 & 0xff) 11888 ret = -TARGET_EINVAL; 11889 else { 11890 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; 11891 ret = 0; 11892 } 11893 return ret; 11894 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 11895 return do_set_thread_area(cpu_env, arg1); 11896 #elif defined(TARGET_M68K) 11897 { 11898 TaskState *ts = cpu->opaque; 11899 ts->tp_value = arg1; 11900 return 0; 11901 } 11902 #else 11903 return -TARGET_ENOSYS; 11904 #endif 11905 #endif 11906 #ifdef TARGET_NR_get_thread_area 11907 case TARGET_NR_get_thread_area: 11908 #if defined(TARGET_I386) && defined(TARGET_ABI32) 11909 return do_get_thread_area(cpu_env, arg1); 11910 #elif defined(TARGET_M68K) 11911 { 11912 TaskState *ts = cpu->opaque; 11913 return ts->tp_value; 11914 } 11915 #else 11916 return -TARGET_ENOSYS; 11917 #endif 11918 #endif 11919 #ifdef TARGET_NR_getdomainname 11920 case TARGET_NR_getdomainname: 11921 return -TARGET_ENOSYS; 11922 #endif 11923 11924 #ifdef TARGET_NR_clock_settime 11925 case TARGET_NR_clock_settime: 11926 { 11927 struct timespec ts; 11928 11929 ret = target_to_host_timespec(&ts, arg2); 11930 if (!is_error(ret)) { 11931 ret = get_errno(clock_settime(arg1, &ts)); 11932 } 11933 return ret; 11934 } 11935 #endif 11936 #ifdef TARGET_NR_clock_settime64 11937 case TARGET_NR_clock_settime64: 11938 { 11939 struct timespec ts; 11940 11941 ret = target_to_host_timespec64(&ts, arg2); 11942 if (!is_error(ret)) { 11943 ret = get_errno(clock_settime(arg1, &ts)); 11944 } 11945 return ret; 11946 } 11947 #endif 11948 #ifdef TARGET_NR_clock_gettime 11949 case TARGET_NR_clock_gettime: 11950 { 11951 struct timespec ts; 11952 ret = get_errno(clock_gettime(arg1, &ts)); 11953 if (!is_error(ret)) { 11954 ret = host_to_target_timespec(arg2, &ts); 11955 } 11956 return ret; 11957 } 11958 #endif 11959 #ifdef TARGET_NR_clock_gettime64 11960 case TARGET_NR_clock_gettime64: 11961 { 11962 struct timespec ts; 11963 ret = get_errno(clock_gettime(arg1, &ts)); 11964 if (!is_error(ret)) { 11965 ret = host_to_target_timespec64(arg2, &ts); 11966 } 11967 return ret; 11968 } 11969 #endif 11970 #ifdef TARGET_NR_clock_getres 11971 case TARGET_NR_clock_getres: 11972 { 11973 struct timespec ts; 11974 ret = get_errno(clock_getres(arg1, &ts)); 11975 if (!is_error(ret)) { 11976 host_to_target_timespec(arg2, &ts); 11977 } 11978 return ret; 11979 } 11980 #endif 11981 #ifdef TARGET_NR_clock_getres_time64 11982 case TARGET_NR_clock_getres_time64: 11983 { 11984 struct timespec ts; 11985 ret = get_errno(clock_getres(arg1, &ts)); 11986 if (!is_error(ret)) { 11987 host_to_target_timespec64(arg2, &ts); 11988 } 11989 return ret; 11990 } 11991 #endif 11992 #ifdef TARGET_NR_clock_nanosleep 11993 case TARGET_NR_clock_nanosleep: 11994 { 11995 struct timespec ts; 11996 if (target_to_host_timespec(&ts, arg3)) { 11997 return -TARGET_EFAULT; 11998 } 11999 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12000 &ts, arg4 ? &ts : NULL)); 12001 /* 12002 * if the call is interrupted by a signal handler, it fails 12003 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12004 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12005 */ 12006 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12007 host_to_target_timespec(arg4, &ts)) { 12008 return -TARGET_EFAULT; 12009 } 12010 12011 return ret; 12012 } 12013 #endif 12014 #ifdef TARGET_NR_clock_nanosleep_time64 12015 case TARGET_NR_clock_nanosleep_time64: 12016 { 12017 struct timespec ts; 12018 12019 if (target_to_host_timespec64(&ts, arg3)) { 12020 return -TARGET_EFAULT; 12021 } 12022 12023 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12024 &ts, arg4 ? &ts : NULL)); 12025 12026 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12027 host_to_target_timespec64(arg4, &ts)) { 12028 return -TARGET_EFAULT; 12029 } 12030 return ret; 12031 } 12032 #endif 12033 12034 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 12035 case TARGET_NR_set_tid_address: 12036 return get_errno(set_tid_address((int *)g2h(cpu, arg1))); 12037 #endif 12038 12039 case TARGET_NR_tkill: 12040 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12041 12042 case TARGET_NR_tgkill: 12043 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12044 target_to_host_signal(arg3))); 12045 12046 #ifdef TARGET_NR_set_robust_list 12047 case TARGET_NR_set_robust_list: 12048 case TARGET_NR_get_robust_list: 12049 /* The ABI for supporting robust futexes has userspace pass 12050 * the kernel a pointer to a linked list which is updated by 12051 * userspace after the syscall; the list is walked by the kernel 12052 * when the thread exits. Since the linked list in QEMU guest 12053 * memory isn't a valid linked list for the host and we have 12054 * no way to reliably intercept the thread-death event, we can't 12055 * support these. Silently return ENOSYS so that guest userspace 12056 * falls back to a non-robust futex implementation (which should 12057 * be OK except in the corner case of the guest crashing while 12058 * holding a mutex that is shared with another process via 12059 * shared memory). 12060 */ 12061 return -TARGET_ENOSYS; 12062 #endif 12063 12064 #if defined(TARGET_NR_utimensat) 12065 case TARGET_NR_utimensat: 12066 { 12067 struct timespec *tsp, ts[2]; 12068 if (!arg3) { 12069 tsp = NULL; 12070 } else { 12071 if (target_to_host_timespec(ts, arg3)) { 12072 return -TARGET_EFAULT; 12073 } 12074 if (target_to_host_timespec(ts + 1, arg3 + 12075 sizeof(struct target_timespec))) { 12076 return -TARGET_EFAULT; 12077 } 12078 tsp = ts; 12079 } 12080 if (!arg2) 12081 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12082 else { 12083 if (!(p = lock_user_string(arg2))) { 12084 return -TARGET_EFAULT; 12085 } 12086 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12087 unlock_user(p, arg2, 0); 12088 } 12089 } 12090 return ret; 12091 #endif 12092 #ifdef TARGET_NR_utimensat_time64 12093 case TARGET_NR_utimensat_time64: 12094 { 12095 struct timespec *tsp, ts[2]; 12096 if (!arg3) { 12097 tsp = NULL; 12098 } else { 12099 if (target_to_host_timespec64(ts, arg3)) { 12100 return -TARGET_EFAULT; 12101 } 12102 if (target_to_host_timespec64(ts + 1, arg3 + 12103 sizeof(struct target__kernel_timespec))) { 12104 return -TARGET_EFAULT; 12105 } 12106 tsp = ts; 12107 } 12108 if (!arg2) 12109 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12110 else { 12111 p = lock_user_string(arg2); 12112 if (!p) { 12113 return -TARGET_EFAULT; 12114 } 12115 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12116 unlock_user(p, arg2, 0); 12117 } 12118 } 12119 return ret; 12120 #endif 12121 #ifdef TARGET_NR_futex 12122 case TARGET_NR_futex: 12123 return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6); 12124 #endif 12125 #ifdef TARGET_NR_futex_time64 12126 case TARGET_NR_futex_time64: 12127 return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6); 12128 #endif 12129 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 12130 case TARGET_NR_inotify_init: 12131 ret = get_errno(sys_inotify_init()); 12132 if (ret >= 0) { 12133 fd_trans_register(ret, &target_inotify_trans); 12134 } 12135 return ret; 12136 #endif 12137 #ifdef CONFIG_INOTIFY1 12138 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 12139 case TARGET_NR_inotify_init1: 12140 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1, 12141 fcntl_flags_tbl))); 12142 if (ret >= 0) { 12143 fd_trans_register(ret, &target_inotify_trans); 12144 } 12145 return ret; 12146 #endif 12147 #endif 12148 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 12149 case TARGET_NR_inotify_add_watch: 12150 p = lock_user_string(arg2); 12151 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); 12152 unlock_user(p, arg2, 0); 12153 return ret; 12154 #endif 12155 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 12156 case TARGET_NR_inotify_rm_watch: 12157 return get_errno(sys_inotify_rm_watch(arg1, arg2)); 12158 #endif 12159 12160 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12161 case TARGET_NR_mq_open: 12162 { 12163 struct mq_attr posix_mq_attr; 12164 struct mq_attr *pposix_mq_attr; 12165 int host_flags; 12166 12167 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12168 pposix_mq_attr = NULL; 12169 if (arg4) { 12170 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12171 return -TARGET_EFAULT; 12172 } 12173 pposix_mq_attr = &posix_mq_attr; 12174 } 12175 p = lock_user_string(arg1 - 1); 12176 if (!p) { 12177 return -TARGET_EFAULT; 12178 } 12179 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12180 unlock_user (p, arg1, 0); 12181 } 12182 return ret; 12183 12184 case TARGET_NR_mq_unlink: 12185 p = lock_user_string(arg1 - 1); 12186 if (!p) { 12187 return -TARGET_EFAULT; 12188 } 12189 ret = get_errno(mq_unlink(p)); 12190 unlock_user (p, arg1, 0); 12191 return ret; 12192 12193 #ifdef TARGET_NR_mq_timedsend 12194 case TARGET_NR_mq_timedsend: 12195 { 12196 struct timespec ts; 12197 12198 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12199 if (arg5 != 0) { 12200 if (target_to_host_timespec(&ts, arg5)) { 12201 return -TARGET_EFAULT; 12202 } 12203 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12204 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12205 return -TARGET_EFAULT; 12206 } 12207 } else { 12208 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12209 } 12210 unlock_user (p, arg2, arg3); 12211 } 12212 return ret; 12213 #endif 12214 #ifdef TARGET_NR_mq_timedsend_time64 12215 case TARGET_NR_mq_timedsend_time64: 12216 { 12217 struct timespec ts; 12218 12219 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12220 if (arg5 != 0) { 12221 if (target_to_host_timespec64(&ts, arg5)) { 12222 return -TARGET_EFAULT; 12223 } 12224 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12225 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12226 return -TARGET_EFAULT; 12227 } 12228 } else { 12229 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12230 } 12231 unlock_user(p, arg2, arg3); 12232 } 12233 return ret; 12234 #endif 12235 12236 #ifdef TARGET_NR_mq_timedreceive 12237 case TARGET_NR_mq_timedreceive: 12238 { 12239 struct timespec ts; 12240 unsigned int prio; 12241 12242 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12243 if (arg5 != 0) { 12244 if (target_to_host_timespec(&ts, arg5)) { 12245 return -TARGET_EFAULT; 12246 } 12247 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12248 &prio, &ts)); 12249 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12250 return -TARGET_EFAULT; 12251 } 12252 } else { 12253 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12254 &prio, NULL)); 12255 } 12256 unlock_user (p, arg2, arg3); 12257 if (arg4 != 0) 12258 put_user_u32(prio, arg4); 12259 } 12260 return ret; 12261 #endif 12262 #ifdef TARGET_NR_mq_timedreceive_time64 12263 case TARGET_NR_mq_timedreceive_time64: 12264 { 12265 struct timespec ts; 12266 unsigned int prio; 12267 12268 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12269 if (arg5 != 0) { 12270 if (target_to_host_timespec64(&ts, arg5)) { 12271 return -TARGET_EFAULT; 12272 } 12273 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12274 &prio, &ts)); 12275 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12276 return -TARGET_EFAULT; 12277 } 12278 } else { 12279 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12280 &prio, NULL)); 12281 } 12282 unlock_user(p, arg2, arg3); 12283 if (arg4 != 0) { 12284 put_user_u32(prio, arg4); 12285 } 12286 } 12287 return ret; 12288 #endif 12289 12290 /* Not implemented for now... */ 12291 /* case TARGET_NR_mq_notify: */ 12292 /* break; */ 12293 12294 case TARGET_NR_mq_getsetattr: 12295 { 12296 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 12297 ret = 0; 12298 if (arg2 != 0) { 12299 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 12300 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 12301 &posix_mq_attr_out)); 12302 } else if (arg3 != 0) { 12303 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 12304 } 12305 if (ret == 0 && arg3 != 0) { 12306 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 12307 } 12308 } 12309 return ret; 12310 #endif 12311 12312 #ifdef CONFIG_SPLICE 12313 #ifdef TARGET_NR_tee 12314 case TARGET_NR_tee: 12315 { 12316 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 12317 } 12318 return ret; 12319 #endif 12320 #ifdef TARGET_NR_splice 12321 case TARGET_NR_splice: 12322 { 12323 loff_t loff_in, loff_out; 12324 loff_t *ploff_in = NULL, *ploff_out = NULL; 12325 if (arg2) { 12326 if (get_user_u64(loff_in, arg2)) { 12327 return -TARGET_EFAULT; 12328 } 12329 ploff_in = &loff_in; 12330 } 12331 if (arg4) { 12332 if (get_user_u64(loff_out, arg4)) { 12333 return -TARGET_EFAULT; 12334 } 12335 ploff_out = &loff_out; 12336 } 12337 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 12338 if (arg2) { 12339 if (put_user_u64(loff_in, arg2)) { 12340 return -TARGET_EFAULT; 12341 } 12342 } 12343 if (arg4) { 12344 if (put_user_u64(loff_out, arg4)) { 12345 return -TARGET_EFAULT; 12346 } 12347 } 12348 } 12349 return ret; 12350 #endif 12351 #ifdef TARGET_NR_vmsplice 12352 case TARGET_NR_vmsplice: 12353 { 12354 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 12355 if (vec != NULL) { 12356 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 12357 unlock_iovec(vec, arg2, arg3, 0); 12358 } else { 12359 ret = -host_to_target_errno(errno); 12360 } 12361 } 12362 return ret; 12363 #endif 12364 #endif /* CONFIG_SPLICE */ 12365 #ifdef CONFIG_EVENTFD 12366 #if defined(TARGET_NR_eventfd) 12367 case TARGET_NR_eventfd: 12368 ret = get_errno(eventfd(arg1, 0)); 12369 if (ret >= 0) { 12370 fd_trans_register(ret, &target_eventfd_trans); 12371 } 12372 return ret; 12373 #endif 12374 #if defined(TARGET_NR_eventfd2) 12375 case TARGET_NR_eventfd2: 12376 { 12377 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 12378 if (arg2 & TARGET_O_NONBLOCK) { 12379 host_flags |= O_NONBLOCK; 12380 } 12381 if (arg2 & TARGET_O_CLOEXEC) { 12382 host_flags |= O_CLOEXEC; 12383 } 12384 ret = get_errno(eventfd(arg1, host_flags)); 12385 if (ret >= 0) { 12386 fd_trans_register(ret, &target_eventfd_trans); 12387 } 12388 return ret; 12389 } 12390 #endif 12391 #endif /* CONFIG_EVENTFD */ 12392 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 12393 case TARGET_NR_fallocate: 12394 #if TARGET_ABI_BITS == 32 12395 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 12396 target_offset64(arg5, arg6))); 12397 #else 12398 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 12399 #endif 12400 return ret; 12401 #endif 12402 #if defined(CONFIG_SYNC_FILE_RANGE) 12403 #if defined(TARGET_NR_sync_file_range) 12404 case TARGET_NR_sync_file_range: 12405 #if TARGET_ABI_BITS == 32 12406 #if defined(TARGET_MIPS) 12407 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12408 target_offset64(arg5, arg6), arg7)); 12409 #else 12410 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 12411 target_offset64(arg4, arg5), arg6)); 12412 #endif /* !TARGET_MIPS */ 12413 #else 12414 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 12415 #endif 12416 return ret; 12417 #endif 12418 #if defined(TARGET_NR_sync_file_range2) || \ 12419 defined(TARGET_NR_arm_sync_file_range) 12420 #if defined(TARGET_NR_sync_file_range2) 12421 case TARGET_NR_sync_file_range2: 12422 #endif 12423 #if defined(TARGET_NR_arm_sync_file_range) 12424 case TARGET_NR_arm_sync_file_range: 12425 #endif 12426 /* This is like sync_file_range but the arguments are reordered */ 12427 #if TARGET_ABI_BITS == 32 12428 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12429 target_offset64(arg5, arg6), arg2)); 12430 #else 12431 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 12432 #endif 12433 return ret; 12434 #endif 12435 #endif 12436 #if defined(TARGET_NR_signalfd4) 12437 case TARGET_NR_signalfd4: 12438 return do_signalfd4(arg1, arg2, arg4); 12439 #endif 12440 #if defined(TARGET_NR_signalfd) 12441 case TARGET_NR_signalfd: 12442 return do_signalfd4(arg1, arg2, 0); 12443 #endif 12444 #if defined(CONFIG_EPOLL) 12445 #if defined(TARGET_NR_epoll_create) 12446 case TARGET_NR_epoll_create: 12447 return get_errno(epoll_create(arg1)); 12448 #endif 12449 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12450 case TARGET_NR_epoll_create1: 12451 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 12452 #endif 12453 #if defined(TARGET_NR_epoll_ctl) 12454 case TARGET_NR_epoll_ctl: 12455 { 12456 struct epoll_event ep; 12457 struct epoll_event *epp = 0; 12458 if (arg4) { 12459 if (arg2 != EPOLL_CTL_DEL) { 12460 struct target_epoll_event *target_ep; 12461 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12462 return -TARGET_EFAULT; 12463 } 12464 ep.events = tswap32(target_ep->events); 12465 /* 12466 * The epoll_data_t union is just opaque data to the kernel, 12467 * so we transfer all 64 bits across and need not worry what 12468 * actual data type it is. 12469 */ 12470 ep.data.u64 = tswap64(target_ep->data.u64); 12471 unlock_user_struct(target_ep, arg4, 0); 12472 } 12473 /* 12474 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 12475 * non-null pointer, even though this argument is ignored. 12476 * 12477 */ 12478 epp = &ep; 12479 } 12480 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12481 } 12482 #endif 12483 12484 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12485 #if defined(TARGET_NR_epoll_wait) 12486 case TARGET_NR_epoll_wait: 12487 #endif 12488 #if defined(TARGET_NR_epoll_pwait) 12489 case TARGET_NR_epoll_pwait: 12490 #endif 12491 { 12492 struct target_epoll_event *target_ep; 12493 struct epoll_event *ep; 12494 int epfd = arg1; 12495 int maxevents = arg3; 12496 int timeout = arg4; 12497 12498 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12499 return -TARGET_EINVAL; 12500 } 12501 12502 target_ep = lock_user(VERIFY_WRITE, arg2, 12503 maxevents * sizeof(struct target_epoll_event), 1); 12504 if (!target_ep) { 12505 return -TARGET_EFAULT; 12506 } 12507 12508 ep = g_try_new(struct epoll_event, maxevents); 12509 if (!ep) { 12510 unlock_user(target_ep, arg2, 0); 12511 return -TARGET_ENOMEM; 12512 } 12513 12514 switch (num) { 12515 #if defined(TARGET_NR_epoll_pwait) 12516 case TARGET_NR_epoll_pwait: 12517 { 12518 target_sigset_t *target_set; 12519 sigset_t _set, *set = &_set; 12520 12521 if (arg5) { 12522 if (arg6 != sizeof(target_sigset_t)) { 12523 ret = -TARGET_EINVAL; 12524 break; 12525 } 12526 12527 target_set = lock_user(VERIFY_READ, arg5, 12528 sizeof(target_sigset_t), 1); 12529 if (!target_set) { 12530 ret = -TARGET_EFAULT; 12531 break; 12532 } 12533 target_to_host_sigset(set, target_set); 12534 unlock_user(target_set, arg5, 0); 12535 } else { 12536 set = NULL; 12537 } 12538 12539 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12540 set, SIGSET_T_SIZE)); 12541 break; 12542 } 12543 #endif 12544 #if defined(TARGET_NR_epoll_wait) 12545 case TARGET_NR_epoll_wait: 12546 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12547 NULL, 0)); 12548 break; 12549 #endif 12550 default: 12551 ret = -TARGET_ENOSYS; 12552 } 12553 if (!is_error(ret)) { 12554 int i; 12555 for (i = 0; i < ret; i++) { 12556 target_ep[i].events = tswap32(ep[i].events); 12557 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12558 } 12559 unlock_user(target_ep, arg2, 12560 ret * sizeof(struct target_epoll_event)); 12561 } else { 12562 unlock_user(target_ep, arg2, 0); 12563 } 12564 g_free(ep); 12565 return ret; 12566 } 12567 #endif 12568 #endif 12569 #ifdef TARGET_NR_prlimit64 12570 case TARGET_NR_prlimit64: 12571 { 12572 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12573 struct target_rlimit64 *target_rnew, *target_rold; 12574 struct host_rlimit64 rnew, rold, *rnewp = 0; 12575 int resource = target_to_host_resource(arg2); 12576 12577 if (arg3 && (resource != RLIMIT_AS && 12578 resource != RLIMIT_DATA && 12579 resource != RLIMIT_STACK)) { 12580 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12581 return -TARGET_EFAULT; 12582 } 12583 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12584 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12585 unlock_user_struct(target_rnew, arg3, 0); 12586 rnewp = &rnew; 12587 } 12588 12589 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12590 if (!is_error(ret) && arg4) { 12591 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12592 return -TARGET_EFAULT; 12593 } 12594 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12595 target_rold->rlim_max = tswap64(rold.rlim_max); 12596 unlock_user_struct(target_rold, arg4, 1); 12597 } 12598 return ret; 12599 } 12600 #endif 12601 #ifdef TARGET_NR_gethostname 12602 case TARGET_NR_gethostname: 12603 { 12604 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12605 if (name) { 12606 ret = get_errno(gethostname(name, arg2)); 12607 unlock_user(name, arg1, arg2); 12608 } else { 12609 ret = -TARGET_EFAULT; 12610 } 12611 return ret; 12612 } 12613 #endif 12614 #ifdef TARGET_NR_atomic_cmpxchg_32 12615 case TARGET_NR_atomic_cmpxchg_32: 12616 { 12617 /* should use start_exclusive from main.c */ 12618 abi_ulong mem_value; 12619 if (get_user_u32(mem_value, arg6)) { 12620 target_siginfo_t info; 12621 info.si_signo = SIGSEGV; 12622 info.si_errno = 0; 12623 info.si_code = TARGET_SEGV_MAPERR; 12624 info._sifields._sigfault._addr = arg6; 12625 queue_signal((CPUArchState *)cpu_env, info.si_signo, 12626 QEMU_SI_FAULT, &info); 12627 ret = 0xdeadbeef; 12628 12629 } 12630 if (mem_value == arg2) 12631 put_user_u32(arg1, arg6); 12632 return mem_value; 12633 } 12634 #endif 12635 #ifdef TARGET_NR_atomic_barrier 12636 case TARGET_NR_atomic_barrier: 12637 /* Like the kernel implementation and the 12638 qemu arm barrier, no-op this? */ 12639 return 0; 12640 #endif 12641 12642 #ifdef TARGET_NR_timer_create 12643 case TARGET_NR_timer_create: 12644 { 12645 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12646 12647 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12648 12649 int clkid = arg1; 12650 int timer_index = next_free_host_timer(); 12651 12652 if (timer_index < 0) { 12653 ret = -TARGET_EAGAIN; 12654 } else { 12655 timer_t *phtimer = g_posix_timers + timer_index; 12656 12657 if (arg2) { 12658 phost_sevp = &host_sevp; 12659 ret = target_to_host_sigevent(phost_sevp, arg2); 12660 if (ret != 0) { 12661 return ret; 12662 } 12663 } 12664 12665 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12666 if (ret) { 12667 phtimer = NULL; 12668 } else { 12669 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12670 return -TARGET_EFAULT; 12671 } 12672 } 12673 } 12674 return ret; 12675 } 12676 #endif 12677 12678 #ifdef TARGET_NR_timer_settime 12679 case TARGET_NR_timer_settime: 12680 { 12681 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12682 * struct itimerspec * old_value */ 12683 target_timer_t timerid = get_timer_id(arg1); 12684 12685 if (timerid < 0) { 12686 ret = timerid; 12687 } else if (arg3 == 0) { 12688 ret = -TARGET_EINVAL; 12689 } else { 12690 timer_t htimer = g_posix_timers[timerid]; 12691 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12692 12693 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12694 return -TARGET_EFAULT; 12695 } 12696 ret = get_errno( 12697 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12698 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12699 return -TARGET_EFAULT; 12700 } 12701 } 12702 return ret; 12703 } 12704 #endif 12705 12706 #ifdef TARGET_NR_timer_settime64 12707 case TARGET_NR_timer_settime64: 12708 { 12709 target_timer_t timerid = get_timer_id(arg1); 12710 12711 if (timerid < 0) { 12712 ret = timerid; 12713 } else if (arg3 == 0) { 12714 ret = -TARGET_EINVAL; 12715 } else { 12716 timer_t htimer = g_posix_timers[timerid]; 12717 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12718 12719 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 12720 return -TARGET_EFAULT; 12721 } 12722 ret = get_errno( 12723 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12724 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 12725 return -TARGET_EFAULT; 12726 } 12727 } 12728 return ret; 12729 } 12730 #endif 12731 12732 #ifdef TARGET_NR_timer_gettime 12733 case TARGET_NR_timer_gettime: 12734 { 12735 /* args: timer_t timerid, struct itimerspec *curr_value */ 12736 target_timer_t timerid = get_timer_id(arg1); 12737 12738 if (timerid < 0) { 12739 ret = timerid; 12740 } else if (!arg2) { 12741 ret = -TARGET_EFAULT; 12742 } else { 12743 timer_t htimer = g_posix_timers[timerid]; 12744 struct itimerspec hspec; 12745 ret = get_errno(timer_gettime(htimer, &hspec)); 12746 12747 if (host_to_target_itimerspec(arg2, &hspec)) { 12748 ret = -TARGET_EFAULT; 12749 } 12750 } 12751 return ret; 12752 } 12753 #endif 12754 12755 #ifdef TARGET_NR_timer_gettime64 12756 case TARGET_NR_timer_gettime64: 12757 { 12758 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 12759 target_timer_t timerid = get_timer_id(arg1); 12760 12761 if (timerid < 0) { 12762 ret = timerid; 12763 } else if (!arg2) { 12764 ret = -TARGET_EFAULT; 12765 } else { 12766 timer_t htimer = g_posix_timers[timerid]; 12767 struct itimerspec hspec; 12768 ret = get_errno(timer_gettime(htimer, &hspec)); 12769 12770 if (host_to_target_itimerspec64(arg2, &hspec)) { 12771 ret = -TARGET_EFAULT; 12772 } 12773 } 12774 return ret; 12775 } 12776 #endif 12777 12778 #ifdef TARGET_NR_timer_getoverrun 12779 case TARGET_NR_timer_getoverrun: 12780 { 12781 /* args: timer_t timerid */ 12782 target_timer_t timerid = get_timer_id(arg1); 12783 12784 if (timerid < 0) { 12785 ret = timerid; 12786 } else { 12787 timer_t htimer = g_posix_timers[timerid]; 12788 ret = get_errno(timer_getoverrun(htimer)); 12789 } 12790 return ret; 12791 } 12792 #endif 12793 12794 #ifdef TARGET_NR_timer_delete 12795 case TARGET_NR_timer_delete: 12796 { 12797 /* args: timer_t timerid */ 12798 target_timer_t timerid = get_timer_id(arg1); 12799 12800 if (timerid < 0) { 12801 ret = timerid; 12802 } else { 12803 timer_t htimer = g_posix_timers[timerid]; 12804 ret = get_errno(timer_delete(htimer)); 12805 g_posix_timers[timerid] = 0; 12806 } 12807 return ret; 12808 } 12809 #endif 12810 12811 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 12812 case TARGET_NR_timerfd_create: 12813 return get_errno(timerfd_create(arg1, 12814 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 12815 #endif 12816 12817 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 12818 case TARGET_NR_timerfd_gettime: 12819 { 12820 struct itimerspec its_curr; 12821 12822 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 12823 12824 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 12825 return -TARGET_EFAULT; 12826 } 12827 } 12828 return ret; 12829 #endif 12830 12831 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 12832 case TARGET_NR_timerfd_gettime64: 12833 { 12834 struct itimerspec its_curr; 12835 12836 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 12837 12838 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 12839 return -TARGET_EFAULT; 12840 } 12841 } 12842 return ret; 12843 #endif 12844 12845 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 12846 case TARGET_NR_timerfd_settime: 12847 { 12848 struct itimerspec its_new, its_old, *p_new; 12849 12850 if (arg3) { 12851 if (target_to_host_itimerspec(&its_new, arg3)) { 12852 return -TARGET_EFAULT; 12853 } 12854 p_new = &its_new; 12855 } else { 12856 p_new = NULL; 12857 } 12858 12859 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 12860 12861 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 12862 return -TARGET_EFAULT; 12863 } 12864 } 12865 return ret; 12866 #endif 12867 12868 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 12869 case TARGET_NR_timerfd_settime64: 12870 { 12871 struct itimerspec its_new, its_old, *p_new; 12872 12873 if (arg3) { 12874 if (target_to_host_itimerspec64(&its_new, arg3)) { 12875 return -TARGET_EFAULT; 12876 } 12877 p_new = &its_new; 12878 } else { 12879 p_new = NULL; 12880 } 12881 12882 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 12883 12884 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 12885 return -TARGET_EFAULT; 12886 } 12887 } 12888 return ret; 12889 #endif 12890 12891 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 12892 case TARGET_NR_ioprio_get: 12893 return get_errno(ioprio_get(arg1, arg2)); 12894 #endif 12895 12896 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 12897 case TARGET_NR_ioprio_set: 12898 return get_errno(ioprio_set(arg1, arg2, arg3)); 12899 #endif 12900 12901 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 12902 case TARGET_NR_setns: 12903 return get_errno(setns(arg1, arg2)); 12904 #endif 12905 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 12906 case TARGET_NR_unshare: 12907 return get_errno(unshare(arg1)); 12908 #endif 12909 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 12910 case TARGET_NR_kcmp: 12911 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 12912 #endif 12913 #ifdef TARGET_NR_swapcontext 12914 case TARGET_NR_swapcontext: 12915 /* PowerPC specific. */ 12916 return do_swapcontext(cpu_env, arg1, arg2, arg3); 12917 #endif 12918 #ifdef TARGET_NR_memfd_create 12919 case TARGET_NR_memfd_create: 12920 p = lock_user_string(arg1); 12921 if (!p) { 12922 return -TARGET_EFAULT; 12923 } 12924 ret = get_errno(memfd_create(p, arg2)); 12925 fd_trans_unregister(ret); 12926 unlock_user(p, arg1, 0); 12927 return ret; 12928 #endif 12929 #if defined TARGET_NR_membarrier && defined __NR_membarrier 12930 case TARGET_NR_membarrier: 12931 return get_errno(membarrier(arg1, arg2)); 12932 #endif 12933 12934 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 12935 case TARGET_NR_copy_file_range: 12936 { 12937 loff_t inoff, outoff; 12938 loff_t *pinoff = NULL, *poutoff = NULL; 12939 12940 if (arg2) { 12941 if (get_user_u64(inoff, arg2)) { 12942 return -TARGET_EFAULT; 12943 } 12944 pinoff = &inoff; 12945 } 12946 if (arg4) { 12947 if (get_user_u64(outoff, arg4)) { 12948 return -TARGET_EFAULT; 12949 } 12950 poutoff = &outoff; 12951 } 12952 /* Do not sign-extend the count parameter. */ 12953 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 12954 (abi_ulong)arg5, arg6)); 12955 if (!is_error(ret) && ret > 0) { 12956 if (arg2) { 12957 if (put_user_u64(inoff, arg2)) { 12958 return -TARGET_EFAULT; 12959 } 12960 } 12961 if (arg4) { 12962 if (put_user_u64(outoff, arg4)) { 12963 return -TARGET_EFAULT; 12964 } 12965 } 12966 } 12967 } 12968 return ret; 12969 #endif 12970 12971 #if defined(TARGET_NR_pivot_root) 12972 case TARGET_NR_pivot_root: 12973 { 12974 void *p2; 12975 p = lock_user_string(arg1); /* new_root */ 12976 p2 = lock_user_string(arg2); /* put_old */ 12977 if (!p || !p2) { 12978 ret = -TARGET_EFAULT; 12979 } else { 12980 ret = get_errno(pivot_root(p, p2)); 12981 } 12982 unlock_user(p2, arg2, 0); 12983 unlock_user(p, arg1, 0); 12984 } 12985 return ret; 12986 #endif 12987 12988 default: 12989 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 12990 return -TARGET_ENOSYS; 12991 } 12992 return ret; 12993 } 12994 12995 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 12996 abi_long arg2, abi_long arg3, abi_long arg4, 12997 abi_long arg5, abi_long arg6, abi_long arg7, 12998 abi_long arg8) 12999 { 13000 CPUState *cpu = env_cpu(cpu_env); 13001 abi_long ret; 13002 13003 #ifdef DEBUG_ERESTARTSYS 13004 /* Debug-only code for exercising the syscall-restart code paths 13005 * in the per-architecture cpu main loops: restart every syscall 13006 * the guest makes once before letting it through. 13007 */ 13008 { 13009 static bool flag; 13010 flag = !flag; 13011 if (flag) { 13012 return -QEMU_ERESTARTSYS; 13013 } 13014 } 13015 #endif 13016 13017 record_syscall_start(cpu, num, arg1, 13018 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13019 13020 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13021 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13022 } 13023 13024 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13025 arg5, arg6, arg7, arg8); 13026 13027 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13028 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13029 arg3, arg4, arg5, arg6); 13030 } 13031 13032 record_syscall_return(cpu, num, ret); 13033 return ret; 13034 } 13035