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/ip.h> 55 #include <netinet/tcp.h> 56 #include <linux/wireless.h> 57 #include <linux/icmp.h> 58 #include <linux/icmpv6.h> 59 #include <linux/errqueue.h> 60 #include <linux/random.h> 61 #ifdef CONFIG_TIMERFD 62 #include <sys/timerfd.h> 63 #endif 64 #ifdef CONFIG_EVENTFD 65 #include <sys/eventfd.h> 66 #endif 67 #ifdef CONFIG_EPOLL 68 #include <sys/epoll.h> 69 #endif 70 #ifdef CONFIG_ATTR 71 #include "qemu/xattr.h" 72 #endif 73 #ifdef CONFIG_SENDFILE 74 #include <sys/sendfile.h> 75 #endif 76 #ifdef CONFIG_KCOV 77 #include <sys/kcov.h> 78 #endif 79 80 #define termios host_termios 81 #define winsize host_winsize 82 #define termio host_termio 83 #define sgttyb host_sgttyb /* same as target */ 84 #define tchars host_tchars /* same as target */ 85 #define ltchars host_ltchars /* same as target */ 86 87 #include <linux/termios.h> 88 #include <linux/unistd.h> 89 #include <linux/cdrom.h> 90 #include <linux/hdreg.h> 91 #include <linux/soundcard.h> 92 #include <linux/kd.h> 93 #include <linux/mtio.h> 94 #include <linux/fs.h> 95 #include <linux/fd.h> 96 #if defined(CONFIG_FIEMAP) 97 #include <linux/fiemap.h> 98 #endif 99 #include <linux/fb.h> 100 #if defined(CONFIG_USBFS) 101 #include <linux/usbdevice_fs.h> 102 #include <linux/usb/ch9.h> 103 #endif 104 #include <linux/vt.h> 105 #include <linux/dm-ioctl.h> 106 #include <linux/reboot.h> 107 #include <linux/route.h> 108 #include <linux/filter.h> 109 #include <linux/blkpg.h> 110 #include <netpacket/packet.h> 111 #include <linux/netlink.h> 112 #include <linux/if_alg.h> 113 #include <linux/rtc.h> 114 #include <sound/asound.h> 115 #include "linux_loop.h" 116 #include "uname.h" 117 118 #include "qemu.h" 119 #include "qemu/guest-random.h" 120 #include "qemu/selfmap.h" 121 #include "user/syscall-trace.h" 122 #include "qapi/error.h" 123 #include "fd-trans.h" 124 #include "tcg/tcg.h" 125 126 #ifndef CLONE_IO 127 #define CLONE_IO 0x80000000 /* Clone io context */ 128 #endif 129 130 /* We can't directly call the host clone syscall, because this will 131 * badly confuse libc (breaking mutexes, for example). So we must 132 * divide clone flags into: 133 * * flag combinations that look like pthread_create() 134 * * flag combinations that look like fork() 135 * * flags we can implement within QEMU itself 136 * * flags we can't support and will return an error for 137 */ 138 /* For thread creation, all these flags must be present; for 139 * fork, none must be present. 140 */ 141 #define CLONE_THREAD_FLAGS \ 142 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 143 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 144 145 /* These flags are ignored: 146 * CLONE_DETACHED is now ignored by the kernel; 147 * CLONE_IO is just an optimisation hint to the I/O scheduler 148 */ 149 #define CLONE_IGNORED_FLAGS \ 150 (CLONE_DETACHED | CLONE_IO) 151 152 /* Flags for fork which we can implement within QEMU itself */ 153 #define CLONE_OPTIONAL_FORK_FLAGS \ 154 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 155 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 156 157 /* Flags for thread creation which we can implement within QEMU itself */ 158 #define CLONE_OPTIONAL_THREAD_FLAGS \ 159 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 160 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 161 162 #define CLONE_INVALID_FORK_FLAGS \ 163 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 164 165 #define CLONE_INVALID_THREAD_FLAGS \ 166 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 167 CLONE_IGNORED_FLAGS)) 168 169 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 170 * have almost all been allocated. We cannot support any of 171 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 172 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 173 * The checks against the invalid thread masks above will catch these. 174 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 175 */ 176 177 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 178 * once. This exercises the codepaths for restart. 179 */ 180 //#define DEBUG_ERESTARTSYS 181 182 //#include <linux/msdos_fs.h> 183 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) 184 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) 185 186 #undef _syscall0 187 #undef _syscall1 188 #undef _syscall2 189 #undef _syscall3 190 #undef _syscall4 191 #undef _syscall5 192 #undef _syscall6 193 194 #define _syscall0(type,name) \ 195 static type name (void) \ 196 { \ 197 return syscall(__NR_##name); \ 198 } 199 200 #define _syscall1(type,name,type1,arg1) \ 201 static type name (type1 arg1) \ 202 { \ 203 return syscall(__NR_##name, arg1); \ 204 } 205 206 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 207 static type name (type1 arg1,type2 arg2) \ 208 { \ 209 return syscall(__NR_##name, arg1, arg2); \ 210 } 211 212 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 213 static type name (type1 arg1,type2 arg2,type3 arg3) \ 214 { \ 215 return syscall(__NR_##name, arg1, arg2, arg3); \ 216 } 217 218 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 219 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 220 { \ 221 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 222 } 223 224 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 225 type5,arg5) \ 226 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 227 { \ 228 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 229 } 230 231 232 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 233 type5,arg5,type6,arg6) \ 234 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 235 type6 arg6) \ 236 { \ 237 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 238 } 239 240 241 #define __NR_sys_uname __NR_uname 242 #define __NR_sys_getcwd1 __NR_getcwd 243 #define __NR_sys_getdents __NR_getdents 244 #define __NR_sys_getdents64 __NR_getdents64 245 #define __NR_sys_getpriority __NR_getpriority 246 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 247 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 248 #define __NR_sys_syslog __NR_syslog 249 #if defined(__NR_futex) 250 # define __NR_sys_futex __NR_futex 251 #endif 252 #if defined(__NR_futex_time64) 253 # define __NR_sys_futex_time64 __NR_futex_time64 254 #endif 255 #define __NR_sys_inotify_init __NR_inotify_init 256 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch 257 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch 258 #define __NR_sys_statx __NR_statx 259 260 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__) 261 #define __NR__llseek __NR_lseek 262 #endif 263 264 /* Newer kernel ports have llseek() instead of _llseek() */ 265 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 266 #define TARGET_NR__llseek TARGET_NR_llseek 267 #endif 268 269 #define __NR_sys_gettid __NR_gettid 270 _syscall0(int, sys_gettid) 271 272 /* For the 64-bit guest on 32-bit host case we must emulate 273 * getdents using getdents64, because otherwise the host 274 * might hand us back more dirent records than we can fit 275 * into the guest buffer after structure format conversion. 276 * Otherwise we emulate getdents with getdents if the host has it. 277 */ 278 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS 279 #define EMULATE_GETDENTS_WITH_GETDENTS 280 #endif 281 282 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS) 283 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 284 #endif 285 #if (defined(TARGET_NR_getdents) && \ 286 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \ 287 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 288 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 289 #endif 290 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 291 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 292 loff_t *, res, uint, wh); 293 #endif 294 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 295 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 296 siginfo_t *, uinfo) 297 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 298 #ifdef __NR_exit_group 299 _syscall1(int,exit_group,int,error_code) 300 #endif 301 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 302 _syscall1(int,set_tid_address,int *,tidptr) 303 #endif 304 #if defined(__NR_futex) 305 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 306 const struct timespec *,timeout,int *,uaddr2,int,val3) 307 #endif 308 #if defined(__NR_futex_time64) 309 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, 310 const struct timespec *,timeout,int *,uaddr2,int,val3) 311 #endif 312 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 313 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 314 unsigned long *, user_mask_ptr); 315 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 316 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 317 unsigned long *, user_mask_ptr); 318 #define __NR_sys_getcpu __NR_getcpu 319 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); 320 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 321 void *, arg); 322 _syscall2(int, capget, struct __user_cap_header_struct *, header, 323 struct __user_cap_data_struct *, data); 324 _syscall2(int, capset, struct __user_cap_header_struct *, header, 325 struct __user_cap_data_struct *, data); 326 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 327 _syscall2(int, ioprio_get, int, which, int, who) 328 #endif 329 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 330 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 331 #endif 332 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 333 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 334 #endif 335 336 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 337 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 338 unsigned long, idx1, unsigned long, idx2) 339 #endif 340 341 /* 342 * It is assumed that struct statx is architecture independent. 343 */ 344 #if defined(TARGET_NR_statx) && defined(__NR_statx) 345 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags, 346 unsigned int, mask, struct target_statx *, statxbuf) 347 #endif 348 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) 349 _syscall2(int, membarrier, int, cmd, int, flags) 350 #endif 351 352 static bitmask_transtbl fcntl_flags_tbl[] = { 353 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 354 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 355 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 356 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 357 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 358 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 359 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 360 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 361 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 362 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 363 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 364 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 365 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 366 #if defined(O_DIRECT) 367 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 368 #endif 369 #if defined(O_NOATIME) 370 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 371 #endif 372 #if defined(O_CLOEXEC) 373 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 374 #endif 375 #if defined(O_PATH) 376 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 377 #endif 378 #if defined(O_TMPFILE) 379 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE }, 380 #endif 381 /* Don't terminate the list prematurely on 64-bit host+guest. */ 382 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 383 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 384 #endif 385 { 0, 0, 0, 0 } 386 }; 387 388 static int sys_getcwd1(char *buf, size_t size) 389 { 390 if (getcwd(buf, size) == NULL) { 391 /* getcwd() sets errno */ 392 return (-1); 393 } 394 return strlen(buf)+1; 395 } 396 397 #ifdef TARGET_NR_utimensat 398 #if defined(__NR_utimensat) 399 #define __NR_sys_utimensat __NR_utimensat 400 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 401 const struct timespec *,tsp,int,flags) 402 #else 403 static int sys_utimensat(int dirfd, const char *pathname, 404 const struct timespec times[2], int flags) 405 { 406 errno = ENOSYS; 407 return -1; 408 } 409 #endif 410 #endif /* TARGET_NR_utimensat */ 411 412 #ifdef TARGET_NR_renameat2 413 #if defined(__NR_renameat2) 414 #define __NR_sys_renameat2 __NR_renameat2 415 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, 416 const char *, new, unsigned int, flags) 417 #else 418 static int sys_renameat2(int oldfd, const char *old, 419 int newfd, const char *new, int flags) 420 { 421 if (flags == 0) { 422 return renameat(oldfd, old, newfd, new); 423 } 424 errno = ENOSYS; 425 return -1; 426 } 427 #endif 428 #endif /* TARGET_NR_renameat2 */ 429 430 #ifdef CONFIG_INOTIFY 431 #include <sys/inotify.h> 432 433 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 434 static int sys_inotify_init(void) 435 { 436 return (inotify_init()); 437 } 438 #endif 439 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 440 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask) 441 { 442 return (inotify_add_watch(fd, pathname, mask)); 443 } 444 #endif 445 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 446 static int sys_inotify_rm_watch(int fd, int32_t wd) 447 { 448 return (inotify_rm_watch(fd, wd)); 449 } 450 #endif 451 #ifdef CONFIG_INOTIFY1 452 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 453 static int sys_inotify_init1(int flags) 454 { 455 return (inotify_init1(flags)); 456 } 457 #endif 458 #endif 459 #else 460 /* Userspace can usually survive runtime without inotify */ 461 #undef TARGET_NR_inotify_init 462 #undef TARGET_NR_inotify_init1 463 #undef TARGET_NR_inotify_add_watch 464 #undef TARGET_NR_inotify_rm_watch 465 #endif /* CONFIG_INOTIFY */ 466 467 #if defined(TARGET_NR_prlimit64) 468 #ifndef __NR_prlimit64 469 # define __NR_prlimit64 -1 470 #endif 471 #define __NR_sys_prlimit64 __NR_prlimit64 472 /* The glibc rlimit structure may not be that used by the underlying syscall */ 473 struct host_rlimit64 { 474 uint64_t rlim_cur; 475 uint64_t rlim_max; 476 }; 477 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 478 const struct host_rlimit64 *, new_limit, 479 struct host_rlimit64 *, old_limit) 480 #endif 481 482 483 #if defined(TARGET_NR_timer_create) 484 /* Maxiumum of 32 active POSIX timers allowed at any one time. */ 485 static timer_t g_posix_timers[32] = { 0, } ; 486 487 static inline int next_free_host_timer(void) 488 { 489 int k ; 490 /* FIXME: Does finding the next free slot require a lock? */ 491 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { 492 if (g_posix_timers[k] == 0) { 493 g_posix_timers[k] = (timer_t) 1; 494 return k; 495 } 496 } 497 return -1; 498 } 499 #endif 500 501 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ 502 #ifdef TARGET_ARM 503 static inline int regpairs_aligned(void *cpu_env, int num) 504 { 505 return ((((CPUARMState *)cpu_env)->eabi) == 1) ; 506 } 507 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32) 508 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 509 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) 510 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs 511 * of registers which translates to the same as ARM/MIPS, because we start with 512 * r3 as arg1 */ 513 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 514 #elif defined(TARGET_SH4) 515 /* SH4 doesn't align register pairs, except for p{read,write}64 */ 516 static inline int regpairs_aligned(void *cpu_env, int num) 517 { 518 switch (num) { 519 case TARGET_NR_pread64: 520 case TARGET_NR_pwrite64: 521 return 1; 522 523 default: 524 return 0; 525 } 526 } 527 #elif defined(TARGET_XTENSA) 528 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 529 #else 530 static inline int regpairs_aligned(void *cpu_env, int num) { return 0; } 531 #endif 532 533 #define ERRNO_TABLE_SIZE 1200 534 535 /* target_to_host_errno_table[] is initialized from 536 * host_to_target_errno_table[] in syscall_init(). */ 537 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = { 538 }; 539 540 /* 541 * This list is the union of errno values overridden in asm-<arch>/errno.h 542 * minus the errnos that are not actually generic to all archs. 543 */ 544 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = { 545 [EAGAIN] = TARGET_EAGAIN, 546 [EIDRM] = TARGET_EIDRM, 547 [ECHRNG] = TARGET_ECHRNG, 548 [EL2NSYNC] = TARGET_EL2NSYNC, 549 [EL3HLT] = TARGET_EL3HLT, 550 [EL3RST] = TARGET_EL3RST, 551 [ELNRNG] = TARGET_ELNRNG, 552 [EUNATCH] = TARGET_EUNATCH, 553 [ENOCSI] = TARGET_ENOCSI, 554 [EL2HLT] = TARGET_EL2HLT, 555 [EDEADLK] = TARGET_EDEADLK, 556 [ENOLCK] = TARGET_ENOLCK, 557 [EBADE] = TARGET_EBADE, 558 [EBADR] = TARGET_EBADR, 559 [EXFULL] = TARGET_EXFULL, 560 [ENOANO] = TARGET_ENOANO, 561 [EBADRQC] = TARGET_EBADRQC, 562 [EBADSLT] = TARGET_EBADSLT, 563 [EBFONT] = TARGET_EBFONT, 564 [ENOSTR] = TARGET_ENOSTR, 565 [ENODATA] = TARGET_ENODATA, 566 [ETIME] = TARGET_ETIME, 567 [ENOSR] = TARGET_ENOSR, 568 [ENONET] = TARGET_ENONET, 569 [ENOPKG] = TARGET_ENOPKG, 570 [EREMOTE] = TARGET_EREMOTE, 571 [ENOLINK] = TARGET_ENOLINK, 572 [EADV] = TARGET_EADV, 573 [ESRMNT] = TARGET_ESRMNT, 574 [ECOMM] = TARGET_ECOMM, 575 [EPROTO] = TARGET_EPROTO, 576 [EDOTDOT] = TARGET_EDOTDOT, 577 [EMULTIHOP] = TARGET_EMULTIHOP, 578 [EBADMSG] = TARGET_EBADMSG, 579 [ENAMETOOLONG] = TARGET_ENAMETOOLONG, 580 [EOVERFLOW] = TARGET_EOVERFLOW, 581 [ENOTUNIQ] = TARGET_ENOTUNIQ, 582 [EBADFD] = TARGET_EBADFD, 583 [EREMCHG] = TARGET_EREMCHG, 584 [ELIBACC] = TARGET_ELIBACC, 585 [ELIBBAD] = TARGET_ELIBBAD, 586 [ELIBSCN] = TARGET_ELIBSCN, 587 [ELIBMAX] = TARGET_ELIBMAX, 588 [ELIBEXEC] = TARGET_ELIBEXEC, 589 [EILSEQ] = TARGET_EILSEQ, 590 [ENOSYS] = TARGET_ENOSYS, 591 [ELOOP] = TARGET_ELOOP, 592 [ERESTART] = TARGET_ERESTART, 593 [ESTRPIPE] = TARGET_ESTRPIPE, 594 [ENOTEMPTY] = TARGET_ENOTEMPTY, 595 [EUSERS] = TARGET_EUSERS, 596 [ENOTSOCK] = TARGET_ENOTSOCK, 597 [EDESTADDRREQ] = TARGET_EDESTADDRREQ, 598 [EMSGSIZE] = TARGET_EMSGSIZE, 599 [EPROTOTYPE] = TARGET_EPROTOTYPE, 600 [ENOPROTOOPT] = TARGET_ENOPROTOOPT, 601 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT, 602 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT, 603 [EOPNOTSUPP] = TARGET_EOPNOTSUPP, 604 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT, 605 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT, 606 [EADDRINUSE] = TARGET_EADDRINUSE, 607 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL, 608 [ENETDOWN] = TARGET_ENETDOWN, 609 [ENETUNREACH] = TARGET_ENETUNREACH, 610 [ENETRESET] = TARGET_ENETRESET, 611 [ECONNABORTED] = TARGET_ECONNABORTED, 612 [ECONNRESET] = TARGET_ECONNRESET, 613 [ENOBUFS] = TARGET_ENOBUFS, 614 [EISCONN] = TARGET_EISCONN, 615 [ENOTCONN] = TARGET_ENOTCONN, 616 [EUCLEAN] = TARGET_EUCLEAN, 617 [ENOTNAM] = TARGET_ENOTNAM, 618 [ENAVAIL] = TARGET_ENAVAIL, 619 [EISNAM] = TARGET_EISNAM, 620 [EREMOTEIO] = TARGET_EREMOTEIO, 621 [EDQUOT] = TARGET_EDQUOT, 622 [ESHUTDOWN] = TARGET_ESHUTDOWN, 623 [ETOOMANYREFS] = TARGET_ETOOMANYREFS, 624 [ETIMEDOUT] = TARGET_ETIMEDOUT, 625 [ECONNREFUSED] = TARGET_ECONNREFUSED, 626 [EHOSTDOWN] = TARGET_EHOSTDOWN, 627 [EHOSTUNREACH] = TARGET_EHOSTUNREACH, 628 [EALREADY] = TARGET_EALREADY, 629 [EINPROGRESS] = TARGET_EINPROGRESS, 630 [ESTALE] = TARGET_ESTALE, 631 [ECANCELED] = TARGET_ECANCELED, 632 [ENOMEDIUM] = TARGET_ENOMEDIUM, 633 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE, 634 #ifdef ENOKEY 635 [ENOKEY] = TARGET_ENOKEY, 636 #endif 637 #ifdef EKEYEXPIRED 638 [EKEYEXPIRED] = TARGET_EKEYEXPIRED, 639 #endif 640 #ifdef EKEYREVOKED 641 [EKEYREVOKED] = TARGET_EKEYREVOKED, 642 #endif 643 #ifdef EKEYREJECTED 644 [EKEYREJECTED] = TARGET_EKEYREJECTED, 645 #endif 646 #ifdef EOWNERDEAD 647 [EOWNERDEAD] = TARGET_EOWNERDEAD, 648 #endif 649 #ifdef ENOTRECOVERABLE 650 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE, 651 #endif 652 #ifdef ENOMSG 653 [ENOMSG] = TARGET_ENOMSG, 654 #endif 655 #ifdef ERKFILL 656 [ERFKILL] = TARGET_ERFKILL, 657 #endif 658 #ifdef EHWPOISON 659 [EHWPOISON] = TARGET_EHWPOISON, 660 #endif 661 }; 662 663 static inline int host_to_target_errno(int err) 664 { 665 if (err >= 0 && err < ERRNO_TABLE_SIZE && 666 host_to_target_errno_table[err]) { 667 return host_to_target_errno_table[err]; 668 } 669 return err; 670 } 671 672 static inline int target_to_host_errno(int err) 673 { 674 if (err >= 0 && err < ERRNO_TABLE_SIZE && 675 target_to_host_errno_table[err]) { 676 return target_to_host_errno_table[err]; 677 } 678 return err; 679 } 680 681 static inline abi_long get_errno(abi_long ret) 682 { 683 if (ret == -1) 684 return -host_to_target_errno(errno); 685 else 686 return ret; 687 } 688 689 const char *target_strerror(int err) 690 { 691 if (err == TARGET_ERESTARTSYS) { 692 return "To be restarted"; 693 } 694 if (err == TARGET_QEMU_ESIGRETURN) { 695 return "Successful exit from sigreturn"; 696 } 697 698 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { 699 return NULL; 700 } 701 return strerror(target_to_host_errno(err)); 702 } 703 704 #define safe_syscall0(type, name) \ 705 static type safe_##name(void) \ 706 { \ 707 return safe_syscall(__NR_##name); \ 708 } 709 710 #define safe_syscall1(type, name, type1, arg1) \ 711 static type safe_##name(type1 arg1) \ 712 { \ 713 return safe_syscall(__NR_##name, arg1); \ 714 } 715 716 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 717 static type safe_##name(type1 arg1, type2 arg2) \ 718 { \ 719 return safe_syscall(__NR_##name, arg1, arg2); \ 720 } 721 722 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 723 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 724 { \ 725 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 726 } 727 728 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 729 type4, arg4) \ 730 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 731 { \ 732 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 733 } 734 735 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 736 type4, arg4, type5, arg5) \ 737 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 738 type5 arg5) \ 739 { \ 740 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 741 } 742 743 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 744 type4, arg4, type5, arg5, type6, arg6) \ 745 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 746 type5 arg5, type6 arg6) \ 747 { \ 748 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 749 } 750 751 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 752 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 753 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 754 int, flags, mode_t, mode) 755 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) 756 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 757 struct rusage *, rusage) 758 #endif 759 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 760 int, options, struct rusage *, rusage) 761 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 762 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 763 defined(TARGET_NR_pselect6) 764 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 765 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 766 #endif 767 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_poll) 768 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 769 struct timespec *, tsp, const sigset_t *, sigmask, 770 size_t, sigsetsize) 771 #endif 772 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 773 int, maxevents, int, timeout, const sigset_t *, sigmask, 774 size_t, sigsetsize) 775 #if defined(__NR_futex) 776 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 777 const struct timespec *,timeout,int *,uaddr2,int,val3) 778 #endif 779 #if defined(__NR_futex_time64) 780 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \ 781 const struct timespec *,timeout,int *,uaddr2,int,val3) 782 #endif 783 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 784 safe_syscall2(int, kill, pid_t, pid, int, sig) 785 safe_syscall2(int, tkill, int, tid, int, sig) 786 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 787 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 788 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 789 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 790 unsigned long, pos_l, unsigned long, pos_h) 791 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 792 unsigned long, pos_l, unsigned long, pos_h) 793 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 794 socklen_t, addrlen) 795 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 796 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 797 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 798 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 799 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 800 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 801 safe_syscall2(int, flock, int, fd, int, operation) 802 #ifdef TARGET_NR_rt_sigtimedwait 803 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 804 const struct timespec *, uts, size_t, sigsetsize) 805 #endif 806 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 807 int, flags) 808 #if defined(TARGET_NR_nanosleep) 809 safe_syscall2(int, nanosleep, const struct timespec *, req, 810 struct timespec *, rem) 811 #endif 812 #ifdef TARGET_NR_clock_nanosleep 813 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 814 const struct timespec *, req, struct timespec *, rem) 815 #endif 816 #ifdef __NR_ipc 817 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 818 void *, ptr, long, fifth) 819 #endif 820 #ifdef __NR_msgsnd 821 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 822 int, flags) 823 #endif 824 #ifdef __NR_msgrcv 825 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 826 long, msgtype, int, flags) 827 #endif 828 #ifdef __NR_semtimedop 829 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 830 unsigned, nsops, const struct timespec *, timeout) 831 #endif 832 #ifdef TARGET_NR_mq_timedsend 833 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 834 size_t, len, unsigned, prio, const struct timespec *, timeout) 835 #endif 836 #ifdef TARGET_NR_mq_timedreceive 837 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 838 size_t, len, unsigned *, prio, const struct timespec *, timeout) 839 #endif 840 /* We do ioctl like this rather than via safe_syscall3 to preserve the 841 * "third argument might be integer or pointer or not present" behaviour of 842 * the libc function. 843 */ 844 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 845 /* Similarly for fcntl. Note that callers must always: 846 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 847 * use the flock64 struct rather than unsuffixed flock 848 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 849 */ 850 #ifdef __NR_fcntl64 851 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 852 #else 853 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 854 #endif 855 856 static inline int host_to_target_sock_type(int host_type) 857 { 858 int target_type; 859 860 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 861 case SOCK_DGRAM: 862 target_type = TARGET_SOCK_DGRAM; 863 break; 864 case SOCK_STREAM: 865 target_type = TARGET_SOCK_STREAM; 866 break; 867 default: 868 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 869 break; 870 } 871 872 #if defined(SOCK_CLOEXEC) 873 if (host_type & SOCK_CLOEXEC) { 874 target_type |= TARGET_SOCK_CLOEXEC; 875 } 876 #endif 877 878 #if defined(SOCK_NONBLOCK) 879 if (host_type & SOCK_NONBLOCK) { 880 target_type |= TARGET_SOCK_NONBLOCK; 881 } 882 #endif 883 884 return target_type; 885 } 886 887 static abi_ulong target_brk; 888 static abi_ulong target_original_brk; 889 static abi_ulong brk_page; 890 891 void target_set_brk(abi_ulong new_brk) 892 { 893 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 894 brk_page = HOST_PAGE_ALIGN(target_brk); 895 } 896 897 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 898 #define DEBUGF_BRK(message, args...) 899 900 /* do_brk() must return target values and target errnos. */ 901 abi_long do_brk(abi_ulong new_brk) 902 { 903 abi_long mapped_addr; 904 abi_ulong new_alloc_size; 905 906 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 907 908 if (!new_brk) { 909 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 910 return target_brk; 911 } 912 if (new_brk < target_original_brk) { 913 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 914 target_brk); 915 return target_brk; 916 } 917 918 /* If the new brk is less than the highest page reserved to the 919 * target heap allocation, set it and we're almost done... */ 920 if (new_brk <= brk_page) { 921 /* Heap contents are initialized to zero, as for anonymous 922 * mapped pages. */ 923 if (new_brk > target_brk) { 924 memset(g2h(target_brk), 0, new_brk - target_brk); 925 } 926 target_brk = new_brk; 927 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 928 return target_brk; 929 } 930 931 /* We need to allocate more memory after the brk... Note that 932 * we don't use MAP_FIXED because that will map over the top of 933 * any existing mapping (like the one with the host libc or qemu 934 * itself); instead we treat "mapped but at wrong address" as 935 * a failure and unmap again. 936 */ 937 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 938 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 939 PROT_READ|PROT_WRITE, 940 MAP_ANON|MAP_PRIVATE, 0, 0)); 941 942 if (mapped_addr == brk_page) { 943 /* Heap contents are initialized to zero, as for anonymous 944 * mapped pages. Technically the new pages are already 945 * initialized to zero since they *are* anonymous mapped 946 * pages, however we have to take care with the contents that 947 * come from the remaining part of the previous page: it may 948 * contains garbage data due to a previous heap usage (grown 949 * then shrunken). */ 950 memset(g2h(target_brk), 0, brk_page - target_brk); 951 952 target_brk = new_brk; 953 brk_page = HOST_PAGE_ALIGN(target_brk); 954 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 955 target_brk); 956 return target_brk; 957 } else if (mapped_addr != -1) { 958 /* Mapped but at wrong address, meaning there wasn't actually 959 * enough space for this brk. 960 */ 961 target_munmap(mapped_addr, new_alloc_size); 962 mapped_addr = -1; 963 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 964 } 965 else { 966 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 967 } 968 969 #if defined(TARGET_ALPHA) 970 /* We (partially) emulate OSF/1 on Alpha, which requires we 971 return a proper errno, not an unchanged brk value. */ 972 return -TARGET_ENOMEM; 973 #endif 974 /* For everything else, return the previous break. */ 975 return target_brk; 976 } 977 978 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 979 defined(TARGET_NR_pselect6) 980 static inline abi_long copy_from_user_fdset(fd_set *fds, 981 abi_ulong target_fds_addr, 982 int n) 983 { 984 int i, nw, j, k; 985 abi_ulong b, *target_fds; 986 987 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 988 if (!(target_fds = lock_user(VERIFY_READ, 989 target_fds_addr, 990 sizeof(abi_ulong) * nw, 991 1))) 992 return -TARGET_EFAULT; 993 994 FD_ZERO(fds); 995 k = 0; 996 for (i = 0; i < nw; i++) { 997 /* grab the abi_ulong */ 998 __get_user(b, &target_fds[i]); 999 for (j = 0; j < TARGET_ABI_BITS; j++) { 1000 /* check the bit inside the abi_ulong */ 1001 if ((b >> j) & 1) 1002 FD_SET(k, fds); 1003 k++; 1004 } 1005 } 1006 1007 unlock_user(target_fds, target_fds_addr, 0); 1008 1009 return 0; 1010 } 1011 1012 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 1013 abi_ulong target_fds_addr, 1014 int n) 1015 { 1016 if (target_fds_addr) { 1017 if (copy_from_user_fdset(fds, target_fds_addr, n)) 1018 return -TARGET_EFAULT; 1019 *fds_ptr = fds; 1020 } else { 1021 *fds_ptr = NULL; 1022 } 1023 return 0; 1024 } 1025 1026 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 1027 const fd_set *fds, 1028 int n) 1029 { 1030 int i, nw, j, k; 1031 abi_long v; 1032 abi_ulong *target_fds; 1033 1034 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 1035 if (!(target_fds = lock_user(VERIFY_WRITE, 1036 target_fds_addr, 1037 sizeof(abi_ulong) * nw, 1038 0))) 1039 return -TARGET_EFAULT; 1040 1041 k = 0; 1042 for (i = 0; i < nw; i++) { 1043 v = 0; 1044 for (j = 0; j < TARGET_ABI_BITS; j++) { 1045 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 1046 k++; 1047 } 1048 __put_user(v, &target_fds[i]); 1049 } 1050 1051 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 1052 1053 return 0; 1054 } 1055 #endif 1056 1057 #if defined(__alpha__) 1058 #define HOST_HZ 1024 1059 #else 1060 #define HOST_HZ 100 1061 #endif 1062 1063 static inline abi_long host_to_target_clock_t(long ticks) 1064 { 1065 #if HOST_HZ == TARGET_HZ 1066 return ticks; 1067 #else 1068 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 1069 #endif 1070 } 1071 1072 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 1073 const struct rusage *rusage) 1074 { 1075 struct target_rusage *target_rusage; 1076 1077 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 1078 return -TARGET_EFAULT; 1079 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 1080 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 1081 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 1082 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 1083 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 1084 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 1085 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 1086 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 1087 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 1088 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 1089 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 1090 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 1091 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 1092 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 1093 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 1094 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 1095 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 1096 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 1097 unlock_user_struct(target_rusage, target_addr, 1); 1098 1099 return 0; 1100 } 1101 1102 #ifdef TARGET_NR_setrlimit 1103 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 1104 { 1105 abi_ulong target_rlim_swap; 1106 rlim_t result; 1107 1108 target_rlim_swap = tswapal(target_rlim); 1109 if (target_rlim_swap == TARGET_RLIM_INFINITY) 1110 return RLIM_INFINITY; 1111 1112 result = target_rlim_swap; 1113 if (target_rlim_swap != (rlim_t)result) 1114 return RLIM_INFINITY; 1115 1116 return result; 1117 } 1118 #endif 1119 1120 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) 1121 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 1122 { 1123 abi_ulong target_rlim_swap; 1124 abi_ulong result; 1125 1126 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1127 target_rlim_swap = TARGET_RLIM_INFINITY; 1128 else 1129 target_rlim_swap = rlim; 1130 result = tswapal(target_rlim_swap); 1131 1132 return result; 1133 } 1134 #endif 1135 1136 static inline int target_to_host_resource(int code) 1137 { 1138 switch (code) { 1139 case TARGET_RLIMIT_AS: 1140 return RLIMIT_AS; 1141 case TARGET_RLIMIT_CORE: 1142 return RLIMIT_CORE; 1143 case TARGET_RLIMIT_CPU: 1144 return RLIMIT_CPU; 1145 case TARGET_RLIMIT_DATA: 1146 return RLIMIT_DATA; 1147 case TARGET_RLIMIT_FSIZE: 1148 return RLIMIT_FSIZE; 1149 case TARGET_RLIMIT_LOCKS: 1150 return RLIMIT_LOCKS; 1151 case TARGET_RLIMIT_MEMLOCK: 1152 return RLIMIT_MEMLOCK; 1153 case TARGET_RLIMIT_MSGQUEUE: 1154 return RLIMIT_MSGQUEUE; 1155 case TARGET_RLIMIT_NICE: 1156 return RLIMIT_NICE; 1157 case TARGET_RLIMIT_NOFILE: 1158 return RLIMIT_NOFILE; 1159 case TARGET_RLIMIT_NPROC: 1160 return RLIMIT_NPROC; 1161 case TARGET_RLIMIT_RSS: 1162 return RLIMIT_RSS; 1163 case TARGET_RLIMIT_RTPRIO: 1164 return RLIMIT_RTPRIO; 1165 case TARGET_RLIMIT_SIGPENDING: 1166 return RLIMIT_SIGPENDING; 1167 case TARGET_RLIMIT_STACK: 1168 return RLIMIT_STACK; 1169 default: 1170 return code; 1171 } 1172 } 1173 1174 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1175 abi_ulong target_tv_addr) 1176 { 1177 struct target_timeval *target_tv; 1178 1179 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1180 return -TARGET_EFAULT; 1181 } 1182 1183 __get_user(tv->tv_sec, &target_tv->tv_sec); 1184 __get_user(tv->tv_usec, &target_tv->tv_usec); 1185 1186 unlock_user_struct(target_tv, target_tv_addr, 0); 1187 1188 return 0; 1189 } 1190 1191 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1192 const struct timeval *tv) 1193 { 1194 struct target_timeval *target_tv; 1195 1196 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1197 return -TARGET_EFAULT; 1198 } 1199 1200 __put_user(tv->tv_sec, &target_tv->tv_sec); 1201 __put_user(tv->tv_usec, &target_tv->tv_usec); 1202 1203 unlock_user_struct(target_tv, target_tv_addr, 1); 1204 1205 return 0; 1206 } 1207 1208 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, 1209 const struct timeval *tv) 1210 { 1211 struct target__kernel_sock_timeval *target_tv; 1212 1213 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1214 return -TARGET_EFAULT; 1215 } 1216 1217 __put_user(tv->tv_sec, &target_tv->tv_sec); 1218 __put_user(tv->tv_usec, &target_tv->tv_usec); 1219 1220 unlock_user_struct(target_tv, target_tv_addr, 1); 1221 1222 return 0; 1223 } 1224 1225 #if defined(TARGET_NR_futex) || \ 1226 defined(TARGET_NR_rt_sigtimedwait) || \ 1227 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ 1228 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ 1229 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ 1230 defined(TARGET_NR_mq_timedreceive) 1231 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 1232 abi_ulong target_addr) 1233 { 1234 struct target_timespec *target_ts; 1235 1236 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1237 return -TARGET_EFAULT; 1238 } 1239 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1240 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1241 unlock_user_struct(target_ts, target_addr, 0); 1242 return 0; 1243 } 1244 #endif 1245 1246 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) 1247 static inline abi_long target_to_host_timespec64(struct timespec *host_ts, 1248 abi_ulong target_addr) 1249 { 1250 struct target__kernel_timespec *target_ts; 1251 1252 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1253 return -TARGET_EFAULT; 1254 } 1255 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1256 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1257 unlock_user_struct(target_ts, target_addr, 0); 1258 return 0; 1259 } 1260 #endif 1261 1262 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 1263 struct timespec *host_ts) 1264 { 1265 struct target_timespec *target_ts; 1266 1267 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1268 return -TARGET_EFAULT; 1269 } 1270 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1271 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1272 unlock_user_struct(target_ts, target_addr, 1); 1273 return 0; 1274 } 1275 1276 static inline abi_long host_to_target_timespec64(abi_ulong target_addr, 1277 struct timespec *host_ts) 1278 { 1279 struct target__kernel_timespec *target_ts; 1280 1281 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1282 return -TARGET_EFAULT; 1283 } 1284 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1285 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1286 unlock_user_struct(target_ts, target_addr, 1); 1287 return 0; 1288 } 1289 1290 #if defined(TARGET_NR_gettimeofday) 1291 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, 1292 struct timezone *tz) 1293 { 1294 struct target_timezone *target_tz; 1295 1296 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) { 1297 return -TARGET_EFAULT; 1298 } 1299 1300 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1301 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1302 1303 unlock_user_struct(target_tz, target_tz_addr, 1); 1304 1305 return 0; 1306 } 1307 #endif 1308 1309 #if defined(TARGET_NR_settimeofday) 1310 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1311 abi_ulong target_tz_addr) 1312 { 1313 struct target_timezone *target_tz; 1314 1315 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1316 return -TARGET_EFAULT; 1317 } 1318 1319 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1320 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1321 1322 unlock_user_struct(target_tz, target_tz_addr, 0); 1323 1324 return 0; 1325 } 1326 #endif 1327 1328 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1329 #include <mqueue.h> 1330 1331 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1332 abi_ulong target_mq_attr_addr) 1333 { 1334 struct target_mq_attr *target_mq_attr; 1335 1336 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1337 target_mq_attr_addr, 1)) 1338 return -TARGET_EFAULT; 1339 1340 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1341 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1342 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1343 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1344 1345 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1346 1347 return 0; 1348 } 1349 1350 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1351 const struct mq_attr *attr) 1352 { 1353 struct target_mq_attr *target_mq_attr; 1354 1355 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1356 target_mq_attr_addr, 0)) 1357 return -TARGET_EFAULT; 1358 1359 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1360 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1361 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1362 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1363 1364 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1365 1366 return 0; 1367 } 1368 #endif 1369 1370 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1371 /* do_select() must return target values and target errnos. */ 1372 static abi_long do_select(int n, 1373 abi_ulong rfd_addr, abi_ulong wfd_addr, 1374 abi_ulong efd_addr, abi_ulong target_tv_addr) 1375 { 1376 fd_set rfds, wfds, efds; 1377 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1378 struct timeval tv; 1379 struct timespec ts, *ts_ptr; 1380 abi_long ret; 1381 1382 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1383 if (ret) { 1384 return ret; 1385 } 1386 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1387 if (ret) { 1388 return ret; 1389 } 1390 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1391 if (ret) { 1392 return ret; 1393 } 1394 1395 if (target_tv_addr) { 1396 if (copy_from_user_timeval(&tv, target_tv_addr)) 1397 return -TARGET_EFAULT; 1398 ts.tv_sec = tv.tv_sec; 1399 ts.tv_nsec = tv.tv_usec * 1000; 1400 ts_ptr = &ts; 1401 } else { 1402 ts_ptr = NULL; 1403 } 1404 1405 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1406 ts_ptr, NULL)); 1407 1408 if (!is_error(ret)) { 1409 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1410 return -TARGET_EFAULT; 1411 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1412 return -TARGET_EFAULT; 1413 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1414 return -TARGET_EFAULT; 1415 1416 if (target_tv_addr) { 1417 tv.tv_sec = ts.tv_sec; 1418 tv.tv_usec = ts.tv_nsec / 1000; 1419 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1420 return -TARGET_EFAULT; 1421 } 1422 } 1423 } 1424 1425 return ret; 1426 } 1427 1428 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1429 static abi_long do_old_select(abi_ulong arg1) 1430 { 1431 struct target_sel_arg_struct *sel; 1432 abi_ulong inp, outp, exp, tvp; 1433 long nsel; 1434 1435 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1436 return -TARGET_EFAULT; 1437 } 1438 1439 nsel = tswapal(sel->n); 1440 inp = tswapal(sel->inp); 1441 outp = tswapal(sel->outp); 1442 exp = tswapal(sel->exp); 1443 tvp = tswapal(sel->tvp); 1444 1445 unlock_user_struct(sel, arg1, 0); 1446 1447 return do_select(nsel, inp, outp, exp, tvp); 1448 } 1449 #endif 1450 #endif 1451 1452 static abi_long do_pipe2(int host_pipe[], int flags) 1453 { 1454 #ifdef CONFIG_PIPE2 1455 return pipe2(host_pipe, flags); 1456 #else 1457 return -ENOSYS; 1458 #endif 1459 } 1460 1461 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, 1462 int flags, int is_pipe2) 1463 { 1464 int host_pipe[2]; 1465 abi_long ret; 1466 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe); 1467 1468 if (is_error(ret)) 1469 return get_errno(ret); 1470 1471 /* Several targets have special calling conventions for the original 1472 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1473 if (!is_pipe2) { 1474 #if defined(TARGET_ALPHA) 1475 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; 1476 return host_pipe[0]; 1477 #elif defined(TARGET_MIPS) 1478 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; 1479 return host_pipe[0]; 1480 #elif defined(TARGET_SH4) 1481 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; 1482 return host_pipe[0]; 1483 #elif defined(TARGET_SPARC) 1484 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1]; 1485 return host_pipe[0]; 1486 #endif 1487 } 1488 1489 if (put_user_s32(host_pipe[0], pipedes) 1490 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) 1491 return -TARGET_EFAULT; 1492 return get_errno(ret); 1493 } 1494 1495 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1496 abi_ulong target_addr, 1497 socklen_t len) 1498 { 1499 struct target_ip_mreqn *target_smreqn; 1500 1501 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1502 if (!target_smreqn) 1503 return -TARGET_EFAULT; 1504 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1505 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1506 if (len == sizeof(struct target_ip_mreqn)) 1507 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1508 unlock_user(target_smreqn, target_addr, 0); 1509 1510 return 0; 1511 } 1512 1513 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1514 abi_ulong target_addr, 1515 socklen_t len) 1516 { 1517 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1518 sa_family_t sa_family; 1519 struct target_sockaddr *target_saddr; 1520 1521 if (fd_trans_target_to_host_addr(fd)) { 1522 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1523 } 1524 1525 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1526 if (!target_saddr) 1527 return -TARGET_EFAULT; 1528 1529 sa_family = tswap16(target_saddr->sa_family); 1530 1531 /* Oops. The caller might send a incomplete sun_path; sun_path 1532 * must be terminated by \0 (see the manual page), but 1533 * unfortunately it is quite common to specify sockaddr_un 1534 * length as "strlen(x->sun_path)" while it should be 1535 * "strlen(...) + 1". We'll fix that here if needed. 1536 * Linux kernel has a similar feature. 1537 */ 1538 1539 if (sa_family == AF_UNIX) { 1540 if (len < unix_maxlen && len > 0) { 1541 char *cp = (char*)target_saddr; 1542 1543 if ( cp[len-1] && !cp[len] ) 1544 len++; 1545 } 1546 if (len > unix_maxlen) 1547 len = unix_maxlen; 1548 } 1549 1550 memcpy(addr, target_saddr, len); 1551 addr->sa_family = sa_family; 1552 if (sa_family == AF_NETLINK) { 1553 struct sockaddr_nl *nladdr; 1554 1555 nladdr = (struct sockaddr_nl *)addr; 1556 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1557 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1558 } else if (sa_family == AF_PACKET) { 1559 struct target_sockaddr_ll *lladdr; 1560 1561 lladdr = (struct target_sockaddr_ll *)addr; 1562 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1563 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1564 } 1565 unlock_user(target_saddr, target_addr, 0); 1566 1567 return 0; 1568 } 1569 1570 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1571 struct sockaddr *addr, 1572 socklen_t len) 1573 { 1574 struct target_sockaddr *target_saddr; 1575 1576 if (len == 0) { 1577 return 0; 1578 } 1579 assert(addr); 1580 1581 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1582 if (!target_saddr) 1583 return -TARGET_EFAULT; 1584 memcpy(target_saddr, addr, len); 1585 if (len >= offsetof(struct target_sockaddr, sa_family) + 1586 sizeof(target_saddr->sa_family)) { 1587 target_saddr->sa_family = tswap16(addr->sa_family); 1588 } 1589 if (addr->sa_family == AF_NETLINK && 1590 len >= sizeof(struct target_sockaddr_nl)) { 1591 struct target_sockaddr_nl *target_nl = 1592 (struct target_sockaddr_nl *)target_saddr; 1593 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1594 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1595 } else if (addr->sa_family == AF_PACKET) { 1596 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1597 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1598 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1599 } else if (addr->sa_family == AF_INET6 && 1600 len >= sizeof(struct target_sockaddr_in6)) { 1601 struct target_sockaddr_in6 *target_in6 = 1602 (struct target_sockaddr_in6 *)target_saddr; 1603 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1604 } 1605 unlock_user(target_saddr, target_addr, len); 1606 1607 return 0; 1608 } 1609 1610 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1611 struct target_msghdr *target_msgh) 1612 { 1613 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1614 abi_long msg_controllen; 1615 abi_ulong target_cmsg_addr; 1616 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1617 socklen_t space = 0; 1618 1619 msg_controllen = tswapal(target_msgh->msg_controllen); 1620 if (msg_controllen < sizeof (struct target_cmsghdr)) 1621 goto the_end; 1622 target_cmsg_addr = tswapal(target_msgh->msg_control); 1623 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1624 target_cmsg_start = target_cmsg; 1625 if (!target_cmsg) 1626 return -TARGET_EFAULT; 1627 1628 while (cmsg && target_cmsg) { 1629 void *data = CMSG_DATA(cmsg); 1630 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1631 1632 int len = tswapal(target_cmsg->cmsg_len) 1633 - sizeof(struct target_cmsghdr); 1634 1635 space += CMSG_SPACE(len); 1636 if (space > msgh->msg_controllen) { 1637 space -= CMSG_SPACE(len); 1638 /* This is a QEMU bug, since we allocated the payload 1639 * area ourselves (unlike overflow in host-to-target 1640 * conversion, which is just the guest giving us a buffer 1641 * that's too small). It can't happen for the payload types 1642 * we currently support; if it becomes an issue in future 1643 * we would need to improve our allocation strategy to 1644 * something more intelligent than "twice the size of the 1645 * target buffer we're reading from". 1646 */ 1647 qemu_log_mask(LOG_UNIMP, 1648 ("Unsupported ancillary data %d/%d: " 1649 "unhandled msg size\n"), 1650 tswap32(target_cmsg->cmsg_level), 1651 tswap32(target_cmsg->cmsg_type)); 1652 break; 1653 } 1654 1655 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1656 cmsg->cmsg_level = SOL_SOCKET; 1657 } else { 1658 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1659 } 1660 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1661 cmsg->cmsg_len = CMSG_LEN(len); 1662 1663 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1664 int *fd = (int *)data; 1665 int *target_fd = (int *)target_data; 1666 int i, numfds = len / sizeof(int); 1667 1668 for (i = 0; i < numfds; i++) { 1669 __get_user(fd[i], target_fd + i); 1670 } 1671 } else if (cmsg->cmsg_level == SOL_SOCKET 1672 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1673 struct ucred *cred = (struct ucred *)data; 1674 struct target_ucred *target_cred = 1675 (struct target_ucred *)target_data; 1676 1677 __get_user(cred->pid, &target_cred->pid); 1678 __get_user(cred->uid, &target_cred->uid); 1679 __get_user(cred->gid, &target_cred->gid); 1680 } else { 1681 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1682 cmsg->cmsg_level, cmsg->cmsg_type); 1683 memcpy(data, target_data, len); 1684 } 1685 1686 cmsg = CMSG_NXTHDR(msgh, cmsg); 1687 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1688 target_cmsg_start); 1689 } 1690 unlock_user(target_cmsg, target_cmsg_addr, 0); 1691 the_end: 1692 msgh->msg_controllen = space; 1693 return 0; 1694 } 1695 1696 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1697 struct msghdr *msgh) 1698 { 1699 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1700 abi_long msg_controllen; 1701 abi_ulong target_cmsg_addr; 1702 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1703 socklen_t space = 0; 1704 1705 msg_controllen = tswapal(target_msgh->msg_controllen); 1706 if (msg_controllen < sizeof (struct target_cmsghdr)) 1707 goto the_end; 1708 target_cmsg_addr = tswapal(target_msgh->msg_control); 1709 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1710 target_cmsg_start = target_cmsg; 1711 if (!target_cmsg) 1712 return -TARGET_EFAULT; 1713 1714 while (cmsg && target_cmsg) { 1715 void *data = CMSG_DATA(cmsg); 1716 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1717 1718 int len = cmsg->cmsg_len - sizeof(struct cmsghdr); 1719 int tgt_len, tgt_space; 1720 1721 /* We never copy a half-header but may copy half-data; 1722 * this is Linux's behaviour in put_cmsg(). Note that 1723 * truncation here is a guest problem (which we report 1724 * to the guest via the CTRUNC bit), unlike truncation 1725 * in target_to_host_cmsg, which is a QEMU bug. 1726 */ 1727 if (msg_controllen < sizeof(struct target_cmsghdr)) { 1728 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1729 break; 1730 } 1731 1732 if (cmsg->cmsg_level == SOL_SOCKET) { 1733 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1734 } else { 1735 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1736 } 1737 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1738 1739 /* Payload types which need a different size of payload on 1740 * the target must adjust tgt_len here. 1741 */ 1742 tgt_len = len; 1743 switch (cmsg->cmsg_level) { 1744 case SOL_SOCKET: 1745 switch (cmsg->cmsg_type) { 1746 case SO_TIMESTAMP: 1747 tgt_len = sizeof(struct target_timeval); 1748 break; 1749 default: 1750 break; 1751 } 1752 break; 1753 default: 1754 break; 1755 } 1756 1757 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) { 1758 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1759 tgt_len = msg_controllen - sizeof(struct target_cmsghdr); 1760 } 1761 1762 /* We must now copy-and-convert len bytes of payload 1763 * into tgt_len bytes of destination space. Bear in mind 1764 * that in both source and destination we may be dealing 1765 * with a truncated value! 1766 */ 1767 switch (cmsg->cmsg_level) { 1768 case SOL_SOCKET: 1769 switch (cmsg->cmsg_type) { 1770 case SCM_RIGHTS: 1771 { 1772 int *fd = (int *)data; 1773 int *target_fd = (int *)target_data; 1774 int i, numfds = tgt_len / sizeof(int); 1775 1776 for (i = 0; i < numfds; i++) { 1777 __put_user(fd[i], target_fd + i); 1778 } 1779 break; 1780 } 1781 case SO_TIMESTAMP: 1782 { 1783 struct timeval *tv = (struct timeval *)data; 1784 struct target_timeval *target_tv = 1785 (struct target_timeval *)target_data; 1786 1787 if (len != sizeof(struct timeval) || 1788 tgt_len != sizeof(struct target_timeval)) { 1789 goto unimplemented; 1790 } 1791 1792 /* copy struct timeval to target */ 1793 __put_user(tv->tv_sec, &target_tv->tv_sec); 1794 __put_user(tv->tv_usec, &target_tv->tv_usec); 1795 break; 1796 } 1797 case SCM_CREDENTIALS: 1798 { 1799 struct ucred *cred = (struct ucred *)data; 1800 struct target_ucred *target_cred = 1801 (struct target_ucred *)target_data; 1802 1803 __put_user(cred->pid, &target_cred->pid); 1804 __put_user(cred->uid, &target_cred->uid); 1805 __put_user(cred->gid, &target_cred->gid); 1806 break; 1807 } 1808 default: 1809 goto unimplemented; 1810 } 1811 break; 1812 1813 case SOL_IP: 1814 switch (cmsg->cmsg_type) { 1815 case IP_TTL: 1816 { 1817 uint32_t *v = (uint32_t *)data; 1818 uint32_t *t_int = (uint32_t *)target_data; 1819 1820 if (len != sizeof(uint32_t) || 1821 tgt_len != sizeof(uint32_t)) { 1822 goto unimplemented; 1823 } 1824 __put_user(*v, t_int); 1825 break; 1826 } 1827 case IP_RECVERR: 1828 { 1829 struct errhdr_t { 1830 struct sock_extended_err ee; 1831 struct sockaddr_in offender; 1832 }; 1833 struct errhdr_t *errh = (struct errhdr_t *)data; 1834 struct errhdr_t *target_errh = 1835 (struct errhdr_t *)target_data; 1836 1837 if (len != sizeof(struct errhdr_t) || 1838 tgt_len != sizeof(struct errhdr_t)) { 1839 goto unimplemented; 1840 } 1841 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 1842 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 1843 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 1844 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 1845 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 1846 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 1847 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 1848 host_to_target_sockaddr((unsigned long) &target_errh->offender, 1849 (void *) &errh->offender, sizeof(errh->offender)); 1850 break; 1851 } 1852 default: 1853 goto unimplemented; 1854 } 1855 break; 1856 1857 case SOL_IPV6: 1858 switch (cmsg->cmsg_type) { 1859 case IPV6_HOPLIMIT: 1860 { 1861 uint32_t *v = (uint32_t *)data; 1862 uint32_t *t_int = (uint32_t *)target_data; 1863 1864 if (len != sizeof(uint32_t) || 1865 tgt_len != sizeof(uint32_t)) { 1866 goto unimplemented; 1867 } 1868 __put_user(*v, t_int); 1869 break; 1870 } 1871 case IPV6_RECVERR: 1872 { 1873 struct errhdr6_t { 1874 struct sock_extended_err ee; 1875 struct sockaddr_in6 offender; 1876 }; 1877 struct errhdr6_t *errh = (struct errhdr6_t *)data; 1878 struct errhdr6_t *target_errh = 1879 (struct errhdr6_t *)target_data; 1880 1881 if (len != sizeof(struct errhdr6_t) || 1882 tgt_len != sizeof(struct errhdr6_t)) { 1883 goto unimplemented; 1884 } 1885 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 1886 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 1887 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 1888 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 1889 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 1890 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 1891 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 1892 host_to_target_sockaddr((unsigned long) &target_errh->offender, 1893 (void *) &errh->offender, sizeof(errh->offender)); 1894 break; 1895 } 1896 default: 1897 goto unimplemented; 1898 } 1899 break; 1900 1901 default: 1902 unimplemented: 1903 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1904 cmsg->cmsg_level, cmsg->cmsg_type); 1905 memcpy(target_data, data, MIN(len, tgt_len)); 1906 if (tgt_len > len) { 1907 memset(target_data + len, 0, tgt_len - len); 1908 } 1909 } 1910 1911 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len)); 1912 tgt_space = TARGET_CMSG_SPACE(tgt_len); 1913 if (msg_controllen < tgt_space) { 1914 tgt_space = msg_controllen; 1915 } 1916 msg_controllen -= tgt_space; 1917 space += tgt_space; 1918 cmsg = CMSG_NXTHDR(msgh, cmsg); 1919 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1920 target_cmsg_start); 1921 } 1922 unlock_user(target_cmsg, target_cmsg_addr, space); 1923 the_end: 1924 target_msgh->msg_controllen = tswapal(space); 1925 return 0; 1926 } 1927 1928 /* do_setsockopt() Must return target values and target errnos. */ 1929 static abi_long do_setsockopt(int sockfd, int level, int optname, 1930 abi_ulong optval_addr, socklen_t optlen) 1931 { 1932 abi_long ret; 1933 int val; 1934 struct ip_mreqn *ip_mreq; 1935 struct ip_mreq_source *ip_mreq_source; 1936 1937 switch(level) { 1938 case SOL_TCP: 1939 /* TCP options all take an 'int' value. */ 1940 if (optlen < sizeof(uint32_t)) 1941 return -TARGET_EINVAL; 1942 1943 if (get_user_u32(val, optval_addr)) 1944 return -TARGET_EFAULT; 1945 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 1946 break; 1947 case SOL_IP: 1948 switch(optname) { 1949 case IP_TOS: 1950 case IP_TTL: 1951 case IP_HDRINCL: 1952 case IP_ROUTER_ALERT: 1953 case IP_RECVOPTS: 1954 case IP_RETOPTS: 1955 case IP_PKTINFO: 1956 case IP_MTU_DISCOVER: 1957 case IP_RECVERR: 1958 case IP_RECVTTL: 1959 case IP_RECVTOS: 1960 #ifdef IP_FREEBIND 1961 case IP_FREEBIND: 1962 #endif 1963 case IP_MULTICAST_TTL: 1964 case IP_MULTICAST_LOOP: 1965 val = 0; 1966 if (optlen >= sizeof(uint32_t)) { 1967 if (get_user_u32(val, optval_addr)) 1968 return -TARGET_EFAULT; 1969 } else if (optlen >= 1) { 1970 if (get_user_u8(val, optval_addr)) 1971 return -TARGET_EFAULT; 1972 } 1973 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 1974 break; 1975 case IP_ADD_MEMBERSHIP: 1976 case IP_DROP_MEMBERSHIP: 1977 if (optlen < sizeof (struct target_ip_mreq) || 1978 optlen > sizeof (struct target_ip_mreqn)) 1979 return -TARGET_EINVAL; 1980 1981 ip_mreq = (struct ip_mreqn *) alloca(optlen); 1982 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 1983 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 1984 break; 1985 1986 case IP_BLOCK_SOURCE: 1987 case IP_UNBLOCK_SOURCE: 1988 case IP_ADD_SOURCE_MEMBERSHIP: 1989 case IP_DROP_SOURCE_MEMBERSHIP: 1990 if (optlen != sizeof (struct target_ip_mreq_source)) 1991 return -TARGET_EINVAL; 1992 1993 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 1994 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 1995 unlock_user (ip_mreq_source, optval_addr, 0); 1996 break; 1997 1998 default: 1999 goto unimplemented; 2000 } 2001 break; 2002 case SOL_IPV6: 2003 switch (optname) { 2004 case IPV6_MTU_DISCOVER: 2005 case IPV6_MTU: 2006 case IPV6_V6ONLY: 2007 case IPV6_RECVPKTINFO: 2008 case IPV6_UNICAST_HOPS: 2009 case IPV6_MULTICAST_HOPS: 2010 case IPV6_MULTICAST_LOOP: 2011 case IPV6_RECVERR: 2012 case IPV6_RECVHOPLIMIT: 2013 case IPV6_2292HOPLIMIT: 2014 case IPV6_CHECKSUM: 2015 case IPV6_ADDRFORM: 2016 case IPV6_2292PKTINFO: 2017 case IPV6_RECVTCLASS: 2018 case IPV6_RECVRTHDR: 2019 case IPV6_2292RTHDR: 2020 case IPV6_RECVHOPOPTS: 2021 case IPV6_2292HOPOPTS: 2022 case IPV6_RECVDSTOPTS: 2023 case IPV6_2292DSTOPTS: 2024 case IPV6_TCLASS: 2025 #ifdef IPV6_RECVPATHMTU 2026 case IPV6_RECVPATHMTU: 2027 #endif 2028 #ifdef IPV6_TRANSPARENT 2029 case IPV6_TRANSPARENT: 2030 #endif 2031 #ifdef IPV6_FREEBIND 2032 case IPV6_FREEBIND: 2033 #endif 2034 #ifdef IPV6_RECVORIGDSTADDR 2035 case IPV6_RECVORIGDSTADDR: 2036 #endif 2037 val = 0; 2038 if (optlen < sizeof(uint32_t)) { 2039 return -TARGET_EINVAL; 2040 } 2041 if (get_user_u32(val, optval_addr)) { 2042 return -TARGET_EFAULT; 2043 } 2044 ret = get_errno(setsockopt(sockfd, level, optname, 2045 &val, sizeof(val))); 2046 break; 2047 case IPV6_PKTINFO: 2048 { 2049 struct in6_pktinfo pki; 2050 2051 if (optlen < sizeof(pki)) { 2052 return -TARGET_EINVAL; 2053 } 2054 2055 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2056 return -TARGET_EFAULT; 2057 } 2058 2059 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2060 2061 ret = get_errno(setsockopt(sockfd, level, optname, 2062 &pki, sizeof(pki))); 2063 break; 2064 } 2065 case IPV6_ADD_MEMBERSHIP: 2066 case IPV6_DROP_MEMBERSHIP: 2067 { 2068 struct ipv6_mreq ipv6mreq; 2069 2070 if (optlen < sizeof(ipv6mreq)) { 2071 return -TARGET_EINVAL; 2072 } 2073 2074 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { 2075 return -TARGET_EFAULT; 2076 } 2077 2078 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface); 2079 2080 ret = get_errno(setsockopt(sockfd, level, optname, 2081 &ipv6mreq, sizeof(ipv6mreq))); 2082 break; 2083 } 2084 default: 2085 goto unimplemented; 2086 } 2087 break; 2088 case SOL_ICMPV6: 2089 switch (optname) { 2090 case ICMPV6_FILTER: 2091 { 2092 struct icmp6_filter icmp6f; 2093 2094 if (optlen > sizeof(icmp6f)) { 2095 optlen = sizeof(icmp6f); 2096 } 2097 2098 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2099 return -TARGET_EFAULT; 2100 } 2101 2102 for (val = 0; val < 8; val++) { 2103 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2104 } 2105 2106 ret = get_errno(setsockopt(sockfd, level, optname, 2107 &icmp6f, optlen)); 2108 break; 2109 } 2110 default: 2111 goto unimplemented; 2112 } 2113 break; 2114 case SOL_RAW: 2115 switch (optname) { 2116 case ICMP_FILTER: 2117 case IPV6_CHECKSUM: 2118 /* those take an u32 value */ 2119 if (optlen < sizeof(uint32_t)) { 2120 return -TARGET_EINVAL; 2121 } 2122 2123 if (get_user_u32(val, optval_addr)) { 2124 return -TARGET_EFAULT; 2125 } 2126 ret = get_errno(setsockopt(sockfd, level, optname, 2127 &val, sizeof(val))); 2128 break; 2129 2130 default: 2131 goto unimplemented; 2132 } 2133 break; 2134 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE) 2135 case SOL_ALG: 2136 switch (optname) { 2137 case ALG_SET_KEY: 2138 { 2139 char *alg_key = g_malloc(optlen); 2140 2141 if (!alg_key) { 2142 return -TARGET_ENOMEM; 2143 } 2144 if (copy_from_user(alg_key, optval_addr, optlen)) { 2145 g_free(alg_key); 2146 return -TARGET_EFAULT; 2147 } 2148 ret = get_errno(setsockopt(sockfd, level, optname, 2149 alg_key, optlen)); 2150 g_free(alg_key); 2151 break; 2152 } 2153 case ALG_SET_AEAD_AUTHSIZE: 2154 { 2155 ret = get_errno(setsockopt(sockfd, level, optname, 2156 NULL, optlen)); 2157 break; 2158 } 2159 default: 2160 goto unimplemented; 2161 } 2162 break; 2163 #endif 2164 case TARGET_SOL_SOCKET: 2165 switch (optname) { 2166 case TARGET_SO_RCVTIMEO: 2167 { 2168 struct timeval tv; 2169 2170 optname = SO_RCVTIMEO; 2171 2172 set_timeout: 2173 if (optlen != sizeof(struct target_timeval)) { 2174 return -TARGET_EINVAL; 2175 } 2176 2177 if (copy_from_user_timeval(&tv, optval_addr)) { 2178 return -TARGET_EFAULT; 2179 } 2180 2181 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2182 &tv, sizeof(tv))); 2183 return ret; 2184 } 2185 case TARGET_SO_SNDTIMEO: 2186 optname = SO_SNDTIMEO; 2187 goto set_timeout; 2188 case TARGET_SO_ATTACH_FILTER: 2189 { 2190 struct target_sock_fprog *tfprog; 2191 struct target_sock_filter *tfilter; 2192 struct sock_fprog fprog; 2193 struct sock_filter *filter; 2194 int i; 2195 2196 if (optlen != sizeof(*tfprog)) { 2197 return -TARGET_EINVAL; 2198 } 2199 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 2200 return -TARGET_EFAULT; 2201 } 2202 if (!lock_user_struct(VERIFY_READ, tfilter, 2203 tswapal(tfprog->filter), 0)) { 2204 unlock_user_struct(tfprog, optval_addr, 1); 2205 return -TARGET_EFAULT; 2206 } 2207 2208 fprog.len = tswap16(tfprog->len); 2209 filter = g_try_new(struct sock_filter, fprog.len); 2210 if (filter == NULL) { 2211 unlock_user_struct(tfilter, tfprog->filter, 1); 2212 unlock_user_struct(tfprog, optval_addr, 1); 2213 return -TARGET_ENOMEM; 2214 } 2215 for (i = 0; i < fprog.len; i++) { 2216 filter[i].code = tswap16(tfilter[i].code); 2217 filter[i].jt = tfilter[i].jt; 2218 filter[i].jf = tfilter[i].jf; 2219 filter[i].k = tswap32(tfilter[i].k); 2220 } 2221 fprog.filter = filter; 2222 2223 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 2224 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 2225 g_free(filter); 2226 2227 unlock_user_struct(tfilter, tfprog->filter, 1); 2228 unlock_user_struct(tfprog, optval_addr, 1); 2229 return ret; 2230 } 2231 case TARGET_SO_BINDTODEVICE: 2232 { 2233 char *dev_ifname, *addr_ifname; 2234 2235 if (optlen > IFNAMSIZ - 1) { 2236 optlen = IFNAMSIZ - 1; 2237 } 2238 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2239 if (!dev_ifname) { 2240 return -TARGET_EFAULT; 2241 } 2242 optname = SO_BINDTODEVICE; 2243 addr_ifname = alloca(IFNAMSIZ); 2244 memcpy(addr_ifname, dev_ifname, optlen); 2245 addr_ifname[optlen] = 0; 2246 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2247 addr_ifname, optlen)); 2248 unlock_user (dev_ifname, optval_addr, 0); 2249 return ret; 2250 } 2251 case TARGET_SO_LINGER: 2252 { 2253 struct linger lg; 2254 struct target_linger *tlg; 2255 2256 if (optlen != sizeof(struct target_linger)) { 2257 return -TARGET_EINVAL; 2258 } 2259 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) { 2260 return -TARGET_EFAULT; 2261 } 2262 __get_user(lg.l_onoff, &tlg->l_onoff); 2263 __get_user(lg.l_linger, &tlg->l_linger); 2264 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER, 2265 &lg, sizeof(lg))); 2266 unlock_user_struct(tlg, optval_addr, 0); 2267 return ret; 2268 } 2269 /* Options with 'int' argument. */ 2270 case TARGET_SO_DEBUG: 2271 optname = SO_DEBUG; 2272 break; 2273 case TARGET_SO_REUSEADDR: 2274 optname = SO_REUSEADDR; 2275 break; 2276 #ifdef SO_REUSEPORT 2277 case TARGET_SO_REUSEPORT: 2278 optname = SO_REUSEPORT; 2279 break; 2280 #endif 2281 case TARGET_SO_TYPE: 2282 optname = SO_TYPE; 2283 break; 2284 case TARGET_SO_ERROR: 2285 optname = SO_ERROR; 2286 break; 2287 case TARGET_SO_DONTROUTE: 2288 optname = SO_DONTROUTE; 2289 break; 2290 case TARGET_SO_BROADCAST: 2291 optname = SO_BROADCAST; 2292 break; 2293 case TARGET_SO_SNDBUF: 2294 optname = SO_SNDBUF; 2295 break; 2296 case TARGET_SO_SNDBUFFORCE: 2297 optname = SO_SNDBUFFORCE; 2298 break; 2299 case TARGET_SO_RCVBUF: 2300 optname = SO_RCVBUF; 2301 break; 2302 case TARGET_SO_RCVBUFFORCE: 2303 optname = SO_RCVBUFFORCE; 2304 break; 2305 case TARGET_SO_KEEPALIVE: 2306 optname = SO_KEEPALIVE; 2307 break; 2308 case TARGET_SO_OOBINLINE: 2309 optname = SO_OOBINLINE; 2310 break; 2311 case TARGET_SO_NO_CHECK: 2312 optname = SO_NO_CHECK; 2313 break; 2314 case TARGET_SO_PRIORITY: 2315 optname = SO_PRIORITY; 2316 break; 2317 #ifdef SO_BSDCOMPAT 2318 case TARGET_SO_BSDCOMPAT: 2319 optname = SO_BSDCOMPAT; 2320 break; 2321 #endif 2322 case TARGET_SO_PASSCRED: 2323 optname = SO_PASSCRED; 2324 break; 2325 case TARGET_SO_PASSSEC: 2326 optname = SO_PASSSEC; 2327 break; 2328 case TARGET_SO_TIMESTAMP: 2329 optname = SO_TIMESTAMP; 2330 break; 2331 case TARGET_SO_RCVLOWAT: 2332 optname = SO_RCVLOWAT; 2333 break; 2334 default: 2335 goto unimplemented; 2336 } 2337 if (optlen < sizeof(uint32_t)) 2338 return -TARGET_EINVAL; 2339 2340 if (get_user_u32(val, optval_addr)) 2341 return -TARGET_EFAULT; 2342 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 2343 break; 2344 #ifdef SOL_NETLINK 2345 case SOL_NETLINK: 2346 switch (optname) { 2347 case NETLINK_PKTINFO: 2348 case NETLINK_ADD_MEMBERSHIP: 2349 case NETLINK_DROP_MEMBERSHIP: 2350 case NETLINK_BROADCAST_ERROR: 2351 case NETLINK_NO_ENOBUFS: 2352 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2353 case NETLINK_LISTEN_ALL_NSID: 2354 case NETLINK_CAP_ACK: 2355 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2356 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2357 case NETLINK_EXT_ACK: 2358 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2359 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2360 case NETLINK_GET_STRICT_CHK: 2361 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2362 break; 2363 default: 2364 goto unimplemented; 2365 } 2366 val = 0; 2367 if (optlen < sizeof(uint32_t)) { 2368 return -TARGET_EINVAL; 2369 } 2370 if (get_user_u32(val, optval_addr)) { 2371 return -TARGET_EFAULT; 2372 } 2373 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val, 2374 sizeof(val))); 2375 break; 2376 #endif /* SOL_NETLINK */ 2377 default: 2378 unimplemented: 2379 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n", 2380 level, optname); 2381 ret = -TARGET_ENOPROTOOPT; 2382 } 2383 return ret; 2384 } 2385 2386 /* do_getsockopt() Must return target values and target errnos. */ 2387 static abi_long do_getsockopt(int sockfd, int level, int optname, 2388 abi_ulong optval_addr, abi_ulong optlen) 2389 { 2390 abi_long ret; 2391 int len, val; 2392 socklen_t lv; 2393 2394 switch(level) { 2395 case TARGET_SOL_SOCKET: 2396 level = SOL_SOCKET; 2397 switch (optname) { 2398 /* These don't just return a single integer */ 2399 case TARGET_SO_PEERNAME: 2400 goto unimplemented; 2401 case TARGET_SO_RCVTIMEO: { 2402 struct timeval tv; 2403 socklen_t tvlen; 2404 2405 optname = SO_RCVTIMEO; 2406 2407 get_timeout: 2408 if (get_user_u32(len, optlen)) { 2409 return -TARGET_EFAULT; 2410 } 2411 if (len < 0) { 2412 return -TARGET_EINVAL; 2413 } 2414 2415 tvlen = sizeof(tv); 2416 ret = get_errno(getsockopt(sockfd, level, optname, 2417 &tv, &tvlen)); 2418 if (ret < 0) { 2419 return ret; 2420 } 2421 if (len > sizeof(struct target_timeval)) { 2422 len = sizeof(struct target_timeval); 2423 } 2424 if (copy_to_user_timeval(optval_addr, &tv)) { 2425 return -TARGET_EFAULT; 2426 } 2427 if (put_user_u32(len, optlen)) { 2428 return -TARGET_EFAULT; 2429 } 2430 break; 2431 } 2432 case TARGET_SO_SNDTIMEO: 2433 optname = SO_SNDTIMEO; 2434 goto get_timeout; 2435 case TARGET_SO_PEERCRED: { 2436 struct ucred cr; 2437 socklen_t crlen; 2438 struct target_ucred *tcr; 2439 2440 if (get_user_u32(len, optlen)) { 2441 return -TARGET_EFAULT; 2442 } 2443 if (len < 0) { 2444 return -TARGET_EINVAL; 2445 } 2446 2447 crlen = sizeof(cr); 2448 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 2449 &cr, &crlen)); 2450 if (ret < 0) { 2451 return ret; 2452 } 2453 if (len > crlen) { 2454 len = crlen; 2455 } 2456 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 2457 return -TARGET_EFAULT; 2458 } 2459 __put_user(cr.pid, &tcr->pid); 2460 __put_user(cr.uid, &tcr->uid); 2461 __put_user(cr.gid, &tcr->gid); 2462 unlock_user_struct(tcr, optval_addr, 1); 2463 if (put_user_u32(len, optlen)) { 2464 return -TARGET_EFAULT; 2465 } 2466 break; 2467 } 2468 case TARGET_SO_PEERSEC: { 2469 char *name; 2470 2471 if (get_user_u32(len, optlen)) { 2472 return -TARGET_EFAULT; 2473 } 2474 if (len < 0) { 2475 return -TARGET_EINVAL; 2476 } 2477 name = lock_user(VERIFY_WRITE, optval_addr, len, 0); 2478 if (!name) { 2479 return -TARGET_EFAULT; 2480 } 2481 lv = len; 2482 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC, 2483 name, &lv)); 2484 if (put_user_u32(lv, optlen)) { 2485 ret = -TARGET_EFAULT; 2486 } 2487 unlock_user(name, optval_addr, lv); 2488 break; 2489 } 2490 case TARGET_SO_LINGER: 2491 { 2492 struct linger lg; 2493 socklen_t lglen; 2494 struct target_linger *tlg; 2495 2496 if (get_user_u32(len, optlen)) { 2497 return -TARGET_EFAULT; 2498 } 2499 if (len < 0) { 2500 return -TARGET_EINVAL; 2501 } 2502 2503 lglen = sizeof(lg); 2504 ret = get_errno(getsockopt(sockfd, level, SO_LINGER, 2505 &lg, &lglen)); 2506 if (ret < 0) { 2507 return ret; 2508 } 2509 if (len > lglen) { 2510 len = lglen; 2511 } 2512 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) { 2513 return -TARGET_EFAULT; 2514 } 2515 __put_user(lg.l_onoff, &tlg->l_onoff); 2516 __put_user(lg.l_linger, &tlg->l_linger); 2517 unlock_user_struct(tlg, optval_addr, 1); 2518 if (put_user_u32(len, optlen)) { 2519 return -TARGET_EFAULT; 2520 } 2521 break; 2522 } 2523 /* Options with 'int' argument. */ 2524 case TARGET_SO_DEBUG: 2525 optname = SO_DEBUG; 2526 goto int_case; 2527 case TARGET_SO_REUSEADDR: 2528 optname = SO_REUSEADDR; 2529 goto int_case; 2530 #ifdef SO_REUSEPORT 2531 case TARGET_SO_REUSEPORT: 2532 optname = SO_REUSEPORT; 2533 goto int_case; 2534 #endif 2535 case TARGET_SO_TYPE: 2536 optname = SO_TYPE; 2537 goto int_case; 2538 case TARGET_SO_ERROR: 2539 optname = SO_ERROR; 2540 goto int_case; 2541 case TARGET_SO_DONTROUTE: 2542 optname = SO_DONTROUTE; 2543 goto int_case; 2544 case TARGET_SO_BROADCAST: 2545 optname = SO_BROADCAST; 2546 goto int_case; 2547 case TARGET_SO_SNDBUF: 2548 optname = SO_SNDBUF; 2549 goto int_case; 2550 case TARGET_SO_RCVBUF: 2551 optname = SO_RCVBUF; 2552 goto int_case; 2553 case TARGET_SO_KEEPALIVE: 2554 optname = SO_KEEPALIVE; 2555 goto int_case; 2556 case TARGET_SO_OOBINLINE: 2557 optname = SO_OOBINLINE; 2558 goto int_case; 2559 case TARGET_SO_NO_CHECK: 2560 optname = SO_NO_CHECK; 2561 goto int_case; 2562 case TARGET_SO_PRIORITY: 2563 optname = SO_PRIORITY; 2564 goto int_case; 2565 #ifdef SO_BSDCOMPAT 2566 case TARGET_SO_BSDCOMPAT: 2567 optname = SO_BSDCOMPAT; 2568 goto int_case; 2569 #endif 2570 case TARGET_SO_PASSCRED: 2571 optname = SO_PASSCRED; 2572 goto int_case; 2573 case TARGET_SO_TIMESTAMP: 2574 optname = SO_TIMESTAMP; 2575 goto int_case; 2576 case TARGET_SO_RCVLOWAT: 2577 optname = SO_RCVLOWAT; 2578 goto int_case; 2579 case TARGET_SO_ACCEPTCONN: 2580 optname = SO_ACCEPTCONN; 2581 goto int_case; 2582 default: 2583 goto int_case; 2584 } 2585 break; 2586 case SOL_TCP: 2587 /* TCP options all take an 'int' value. */ 2588 int_case: 2589 if (get_user_u32(len, optlen)) 2590 return -TARGET_EFAULT; 2591 if (len < 0) 2592 return -TARGET_EINVAL; 2593 lv = sizeof(lv); 2594 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2595 if (ret < 0) 2596 return ret; 2597 if (optname == SO_TYPE) { 2598 val = host_to_target_sock_type(val); 2599 } 2600 if (len > lv) 2601 len = lv; 2602 if (len == 4) { 2603 if (put_user_u32(val, optval_addr)) 2604 return -TARGET_EFAULT; 2605 } else { 2606 if (put_user_u8(val, optval_addr)) 2607 return -TARGET_EFAULT; 2608 } 2609 if (put_user_u32(len, optlen)) 2610 return -TARGET_EFAULT; 2611 break; 2612 case SOL_IP: 2613 switch(optname) { 2614 case IP_TOS: 2615 case IP_TTL: 2616 case IP_HDRINCL: 2617 case IP_ROUTER_ALERT: 2618 case IP_RECVOPTS: 2619 case IP_RETOPTS: 2620 case IP_PKTINFO: 2621 case IP_MTU_DISCOVER: 2622 case IP_RECVERR: 2623 case IP_RECVTOS: 2624 #ifdef IP_FREEBIND 2625 case IP_FREEBIND: 2626 #endif 2627 case IP_MULTICAST_TTL: 2628 case IP_MULTICAST_LOOP: 2629 if (get_user_u32(len, optlen)) 2630 return -TARGET_EFAULT; 2631 if (len < 0) 2632 return -TARGET_EINVAL; 2633 lv = sizeof(lv); 2634 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2635 if (ret < 0) 2636 return ret; 2637 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2638 len = 1; 2639 if (put_user_u32(len, optlen) 2640 || put_user_u8(val, optval_addr)) 2641 return -TARGET_EFAULT; 2642 } else { 2643 if (len > sizeof(int)) 2644 len = sizeof(int); 2645 if (put_user_u32(len, optlen) 2646 || put_user_u32(val, optval_addr)) 2647 return -TARGET_EFAULT; 2648 } 2649 break; 2650 default: 2651 ret = -TARGET_ENOPROTOOPT; 2652 break; 2653 } 2654 break; 2655 case SOL_IPV6: 2656 switch (optname) { 2657 case IPV6_MTU_DISCOVER: 2658 case IPV6_MTU: 2659 case IPV6_V6ONLY: 2660 case IPV6_RECVPKTINFO: 2661 case IPV6_UNICAST_HOPS: 2662 case IPV6_MULTICAST_HOPS: 2663 case IPV6_MULTICAST_LOOP: 2664 case IPV6_RECVERR: 2665 case IPV6_RECVHOPLIMIT: 2666 case IPV6_2292HOPLIMIT: 2667 case IPV6_CHECKSUM: 2668 case IPV6_ADDRFORM: 2669 case IPV6_2292PKTINFO: 2670 case IPV6_RECVTCLASS: 2671 case IPV6_RECVRTHDR: 2672 case IPV6_2292RTHDR: 2673 case IPV6_RECVHOPOPTS: 2674 case IPV6_2292HOPOPTS: 2675 case IPV6_RECVDSTOPTS: 2676 case IPV6_2292DSTOPTS: 2677 case IPV6_TCLASS: 2678 #ifdef IPV6_RECVPATHMTU 2679 case IPV6_RECVPATHMTU: 2680 #endif 2681 #ifdef IPV6_TRANSPARENT 2682 case IPV6_TRANSPARENT: 2683 #endif 2684 #ifdef IPV6_FREEBIND 2685 case IPV6_FREEBIND: 2686 #endif 2687 #ifdef IPV6_RECVORIGDSTADDR 2688 case IPV6_RECVORIGDSTADDR: 2689 #endif 2690 if (get_user_u32(len, optlen)) 2691 return -TARGET_EFAULT; 2692 if (len < 0) 2693 return -TARGET_EINVAL; 2694 lv = sizeof(lv); 2695 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2696 if (ret < 0) 2697 return ret; 2698 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2699 len = 1; 2700 if (put_user_u32(len, optlen) 2701 || put_user_u8(val, optval_addr)) 2702 return -TARGET_EFAULT; 2703 } else { 2704 if (len > sizeof(int)) 2705 len = sizeof(int); 2706 if (put_user_u32(len, optlen) 2707 || put_user_u32(val, optval_addr)) 2708 return -TARGET_EFAULT; 2709 } 2710 break; 2711 default: 2712 ret = -TARGET_ENOPROTOOPT; 2713 break; 2714 } 2715 break; 2716 #ifdef SOL_NETLINK 2717 case SOL_NETLINK: 2718 switch (optname) { 2719 case NETLINK_PKTINFO: 2720 case NETLINK_BROADCAST_ERROR: 2721 case NETLINK_NO_ENOBUFS: 2722 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2723 case NETLINK_LISTEN_ALL_NSID: 2724 case NETLINK_CAP_ACK: 2725 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2726 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2727 case NETLINK_EXT_ACK: 2728 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2729 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2730 case NETLINK_GET_STRICT_CHK: 2731 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2732 if (get_user_u32(len, optlen)) { 2733 return -TARGET_EFAULT; 2734 } 2735 if (len != sizeof(val)) { 2736 return -TARGET_EINVAL; 2737 } 2738 lv = len; 2739 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2740 if (ret < 0) { 2741 return ret; 2742 } 2743 if (put_user_u32(lv, optlen) 2744 || put_user_u32(val, optval_addr)) { 2745 return -TARGET_EFAULT; 2746 } 2747 break; 2748 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2749 case NETLINK_LIST_MEMBERSHIPS: 2750 { 2751 uint32_t *results; 2752 int i; 2753 if (get_user_u32(len, optlen)) { 2754 return -TARGET_EFAULT; 2755 } 2756 if (len < 0) { 2757 return -TARGET_EINVAL; 2758 } 2759 results = lock_user(VERIFY_WRITE, optval_addr, len, 1); 2760 if (!results) { 2761 return -TARGET_EFAULT; 2762 } 2763 lv = len; 2764 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv)); 2765 if (ret < 0) { 2766 unlock_user(results, optval_addr, 0); 2767 return ret; 2768 } 2769 /* swap host endianess to target endianess. */ 2770 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 2771 results[i] = tswap32(results[i]); 2772 } 2773 if (put_user_u32(lv, optlen)) { 2774 return -TARGET_EFAULT; 2775 } 2776 unlock_user(results, optval_addr, 0); 2777 break; 2778 } 2779 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2780 default: 2781 goto unimplemented; 2782 } 2783 break; 2784 #endif /* SOL_NETLINK */ 2785 default: 2786 unimplemented: 2787 qemu_log_mask(LOG_UNIMP, 2788 "getsockopt level=%d optname=%d not yet supported\n", 2789 level, optname); 2790 ret = -TARGET_EOPNOTSUPP; 2791 break; 2792 } 2793 return ret; 2794 } 2795 2796 /* Convert target low/high pair representing file offset into the host 2797 * low/high pair. This function doesn't handle offsets bigger than 64 bits 2798 * as the kernel doesn't handle them either. 2799 */ 2800 static void target_to_host_low_high(abi_ulong tlow, 2801 abi_ulong thigh, 2802 unsigned long *hlow, 2803 unsigned long *hhigh) 2804 { 2805 uint64_t off = tlow | 2806 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) << 2807 TARGET_LONG_BITS / 2; 2808 2809 *hlow = off; 2810 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2; 2811 } 2812 2813 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 2814 abi_ulong count, int copy) 2815 { 2816 struct target_iovec *target_vec; 2817 struct iovec *vec; 2818 abi_ulong total_len, max_len; 2819 int i; 2820 int err = 0; 2821 bool bad_address = false; 2822 2823 if (count == 0) { 2824 errno = 0; 2825 return NULL; 2826 } 2827 if (count > IOV_MAX) { 2828 errno = EINVAL; 2829 return NULL; 2830 } 2831 2832 vec = g_try_new0(struct iovec, count); 2833 if (vec == NULL) { 2834 errno = ENOMEM; 2835 return NULL; 2836 } 2837 2838 target_vec = lock_user(VERIFY_READ, target_addr, 2839 count * sizeof(struct target_iovec), 1); 2840 if (target_vec == NULL) { 2841 err = EFAULT; 2842 goto fail2; 2843 } 2844 2845 /* ??? If host page size > target page size, this will result in a 2846 value larger than what we can actually support. */ 2847 max_len = 0x7fffffff & TARGET_PAGE_MASK; 2848 total_len = 0; 2849 2850 for (i = 0; i < count; i++) { 2851 abi_ulong base = tswapal(target_vec[i].iov_base); 2852 abi_long len = tswapal(target_vec[i].iov_len); 2853 2854 if (len < 0) { 2855 err = EINVAL; 2856 goto fail; 2857 } else if (len == 0) { 2858 /* Zero length pointer is ignored. */ 2859 vec[i].iov_base = 0; 2860 } else { 2861 vec[i].iov_base = lock_user(type, base, len, copy); 2862 /* If the first buffer pointer is bad, this is a fault. But 2863 * subsequent bad buffers will result in a partial write; this 2864 * is realized by filling the vector with null pointers and 2865 * zero lengths. */ 2866 if (!vec[i].iov_base) { 2867 if (i == 0) { 2868 err = EFAULT; 2869 goto fail; 2870 } else { 2871 bad_address = true; 2872 } 2873 } 2874 if (bad_address) { 2875 len = 0; 2876 } 2877 if (len > max_len - total_len) { 2878 len = max_len - total_len; 2879 } 2880 } 2881 vec[i].iov_len = len; 2882 total_len += len; 2883 } 2884 2885 unlock_user(target_vec, target_addr, 0); 2886 return vec; 2887 2888 fail: 2889 while (--i >= 0) { 2890 if (tswapal(target_vec[i].iov_len) > 0) { 2891 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 2892 } 2893 } 2894 unlock_user(target_vec, target_addr, 0); 2895 fail2: 2896 g_free(vec); 2897 errno = err; 2898 return NULL; 2899 } 2900 2901 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 2902 abi_ulong count, int copy) 2903 { 2904 struct target_iovec *target_vec; 2905 int i; 2906 2907 target_vec = lock_user(VERIFY_READ, target_addr, 2908 count * sizeof(struct target_iovec), 1); 2909 if (target_vec) { 2910 for (i = 0; i < count; i++) { 2911 abi_ulong base = tswapal(target_vec[i].iov_base); 2912 abi_long len = tswapal(target_vec[i].iov_len); 2913 if (len < 0) { 2914 break; 2915 } 2916 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 2917 } 2918 unlock_user(target_vec, target_addr, 0); 2919 } 2920 2921 g_free(vec); 2922 } 2923 2924 static inline int target_to_host_sock_type(int *type) 2925 { 2926 int host_type = 0; 2927 int target_type = *type; 2928 2929 switch (target_type & TARGET_SOCK_TYPE_MASK) { 2930 case TARGET_SOCK_DGRAM: 2931 host_type = SOCK_DGRAM; 2932 break; 2933 case TARGET_SOCK_STREAM: 2934 host_type = SOCK_STREAM; 2935 break; 2936 default: 2937 host_type = target_type & TARGET_SOCK_TYPE_MASK; 2938 break; 2939 } 2940 if (target_type & TARGET_SOCK_CLOEXEC) { 2941 #if defined(SOCK_CLOEXEC) 2942 host_type |= SOCK_CLOEXEC; 2943 #else 2944 return -TARGET_EINVAL; 2945 #endif 2946 } 2947 if (target_type & TARGET_SOCK_NONBLOCK) { 2948 #if defined(SOCK_NONBLOCK) 2949 host_type |= SOCK_NONBLOCK; 2950 #elif !defined(O_NONBLOCK) 2951 return -TARGET_EINVAL; 2952 #endif 2953 } 2954 *type = host_type; 2955 return 0; 2956 } 2957 2958 /* Try to emulate socket type flags after socket creation. */ 2959 static int sock_flags_fixup(int fd, int target_type) 2960 { 2961 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 2962 if (target_type & TARGET_SOCK_NONBLOCK) { 2963 int flags = fcntl(fd, F_GETFL); 2964 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 2965 close(fd); 2966 return -TARGET_EINVAL; 2967 } 2968 } 2969 #endif 2970 return fd; 2971 } 2972 2973 /* do_socket() Must return target values and target errnos. */ 2974 static abi_long do_socket(int domain, int type, int protocol) 2975 { 2976 int target_type = type; 2977 int ret; 2978 2979 ret = target_to_host_sock_type(&type); 2980 if (ret) { 2981 return ret; 2982 } 2983 2984 if (domain == PF_NETLINK && !( 2985 #ifdef CONFIG_RTNETLINK 2986 protocol == NETLINK_ROUTE || 2987 #endif 2988 protocol == NETLINK_KOBJECT_UEVENT || 2989 protocol == NETLINK_AUDIT)) { 2990 return -EPFNOSUPPORT; 2991 } 2992 2993 if (domain == AF_PACKET || 2994 (domain == AF_INET && type == SOCK_PACKET)) { 2995 protocol = tswap16(protocol); 2996 } 2997 2998 ret = get_errno(socket(domain, type, protocol)); 2999 if (ret >= 0) { 3000 ret = sock_flags_fixup(ret, target_type); 3001 if (type == SOCK_PACKET) { 3002 /* Manage an obsolete case : 3003 * if socket type is SOCK_PACKET, bind by name 3004 */ 3005 fd_trans_register(ret, &target_packet_trans); 3006 } else if (domain == PF_NETLINK) { 3007 switch (protocol) { 3008 #ifdef CONFIG_RTNETLINK 3009 case NETLINK_ROUTE: 3010 fd_trans_register(ret, &target_netlink_route_trans); 3011 break; 3012 #endif 3013 case NETLINK_KOBJECT_UEVENT: 3014 /* nothing to do: messages are strings */ 3015 break; 3016 case NETLINK_AUDIT: 3017 fd_trans_register(ret, &target_netlink_audit_trans); 3018 break; 3019 default: 3020 g_assert_not_reached(); 3021 } 3022 } 3023 } 3024 return ret; 3025 } 3026 3027 /* do_bind() Must return target values and target errnos. */ 3028 static abi_long do_bind(int sockfd, abi_ulong target_addr, 3029 socklen_t addrlen) 3030 { 3031 void *addr; 3032 abi_long ret; 3033 3034 if ((int)addrlen < 0) { 3035 return -TARGET_EINVAL; 3036 } 3037 3038 addr = alloca(addrlen+1); 3039 3040 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3041 if (ret) 3042 return ret; 3043 3044 return get_errno(bind(sockfd, addr, addrlen)); 3045 } 3046 3047 /* do_connect() Must return target values and target errnos. */ 3048 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3049 socklen_t addrlen) 3050 { 3051 void *addr; 3052 abi_long ret; 3053 3054 if ((int)addrlen < 0) { 3055 return -TARGET_EINVAL; 3056 } 3057 3058 addr = alloca(addrlen+1); 3059 3060 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3061 if (ret) 3062 return ret; 3063 3064 return get_errno(safe_connect(sockfd, addr, addrlen)); 3065 } 3066 3067 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3068 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3069 int flags, int send) 3070 { 3071 abi_long ret, len; 3072 struct msghdr msg; 3073 abi_ulong count; 3074 struct iovec *vec; 3075 abi_ulong target_vec; 3076 3077 if (msgp->msg_name) { 3078 msg.msg_namelen = tswap32(msgp->msg_namelen); 3079 msg.msg_name = alloca(msg.msg_namelen+1); 3080 ret = target_to_host_sockaddr(fd, msg.msg_name, 3081 tswapal(msgp->msg_name), 3082 msg.msg_namelen); 3083 if (ret == -TARGET_EFAULT) { 3084 /* For connected sockets msg_name and msg_namelen must 3085 * be ignored, so returning EFAULT immediately is wrong. 3086 * Instead, pass a bad msg_name to the host kernel, and 3087 * let it decide whether to return EFAULT or not. 3088 */ 3089 msg.msg_name = (void *)-1; 3090 } else if (ret) { 3091 goto out2; 3092 } 3093 } else { 3094 msg.msg_name = NULL; 3095 msg.msg_namelen = 0; 3096 } 3097 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3098 msg.msg_control = alloca(msg.msg_controllen); 3099 memset(msg.msg_control, 0, msg.msg_controllen); 3100 3101 msg.msg_flags = tswap32(msgp->msg_flags); 3102 3103 count = tswapal(msgp->msg_iovlen); 3104 target_vec = tswapal(msgp->msg_iov); 3105 3106 if (count > IOV_MAX) { 3107 /* sendrcvmsg returns a different errno for this condition than 3108 * readv/writev, so we must catch it here before lock_iovec() does. 3109 */ 3110 ret = -TARGET_EMSGSIZE; 3111 goto out2; 3112 } 3113 3114 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3115 target_vec, count, send); 3116 if (vec == NULL) { 3117 ret = -host_to_target_errno(errno); 3118 goto out2; 3119 } 3120 msg.msg_iovlen = count; 3121 msg.msg_iov = vec; 3122 3123 if (send) { 3124 if (fd_trans_target_to_host_data(fd)) { 3125 void *host_msg; 3126 3127 host_msg = g_malloc(msg.msg_iov->iov_len); 3128 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3129 ret = fd_trans_target_to_host_data(fd)(host_msg, 3130 msg.msg_iov->iov_len); 3131 if (ret >= 0) { 3132 msg.msg_iov->iov_base = host_msg; 3133 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3134 } 3135 g_free(host_msg); 3136 } else { 3137 ret = target_to_host_cmsg(&msg, msgp); 3138 if (ret == 0) { 3139 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3140 } 3141 } 3142 } else { 3143 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3144 if (!is_error(ret)) { 3145 len = ret; 3146 if (fd_trans_host_to_target_data(fd)) { 3147 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3148 MIN(msg.msg_iov->iov_len, len)); 3149 } else { 3150 ret = host_to_target_cmsg(msgp, &msg); 3151 } 3152 if (!is_error(ret)) { 3153 msgp->msg_namelen = tswap32(msg.msg_namelen); 3154 msgp->msg_flags = tswap32(msg.msg_flags); 3155 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3156 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3157 msg.msg_name, msg.msg_namelen); 3158 if (ret) { 3159 goto out; 3160 } 3161 } 3162 3163 ret = len; 3164 } 3165 } 3166 } 3167 3168 out: 3169 unlock_iovec(vec, target_vec, count, !send); 3170 out2: 3171 return ret; 3172 } 3173 3174 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3175 int flags, int send) 3176 { 3177 abi_long ret; 3178 struct target_msghdr *msgp; 3179 3180 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3181 msgp, 3182 target_msg, 3183 send ? 1 : 0)) { 3184 return -TARGET_EFAULT; 3185 } 3186 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3187 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3188 return ret; 3189 } 3190 3191 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3192 * so it might not have this *mmsg-specific flag either. 3193 */ 3194 #ifndef MSG_WAITFORONE 3195 #define MSG_WAITFORONE 0x10000 3196 #endif 3197 3198 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3199 unsigned int vlen, unsigned int flags, 3200 int send) 3201 { 3202 struct target_mmsghdr *mmsgp; 3203 abi_long ret = 0; 3204 int i; 3205 3206 if (vlen > UIO_MAXIOV) { 3207 vlen = UIO_MAXIOV; 3208 } 3209 3210 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3211 if (!mmsgp) { 3212 return -TARGET_EFAULT; 3213 } 3214 3215 for (i = 0; i < vlen; i++) { 3216 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3217 if (is_error(ret)) { 3218 break; 3219 } 3220 mmsgp[i].msg_len = tswap32(ret); 3221 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3222 if (flags & MSG_WAITFORONE) { 3223 flags |= MSG_DONTWAIT; 3224 } 3225 } 3226 3227 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3228 3229 /* Return number of datagrams sent if we sent any at all; 3230 * otherwise return the error. 3231 */ 3232 if (i) { 3233 return i; 3234 } 3235 return ret; 3236 } 3237 3238 /* do_accept4() Must return target values and target errnos. */ 3239 static abi_long do_accept4(int fd, abi_ulong target_addr, 3240 abi_ulong target_addrlen_addr, int flags) 3241 { 3242 socklen_t addrlen, ret_addrlen; 3243 void *addr; 3244 abi_long ret; 3245 int host_flags; 3246 3247 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 3248 3249 if (target_addr == 0) { 3250 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3251 } 3252 3253 /* linux returns EINVAL if addrlen pointer is invalid */ 3254 if (get_user_u32(addrlen, target_addrlen_addr)) 3255 return -TARGET_EINVAL; 3256 3257 if ((int)addrlen < 0) { 3258 return -TARGET_EINVAL; 3259 } 3260 3261 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 3262 return -TARGET_EINVAL; 3263 3264 addr = alloca(addrlen); 3265 3266 ret_addrlen = addrlen; 3267 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags)); 3268 if (!is_error(ret)) { 3269 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3270 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3271 ret = -TARGET_EFAULT; 3272 } 3273 } 3274 return ret; 3275 } 3276 3277 /* do_getpeername() Must return target values and target errnos. */ 3278 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3279 abi_ulong target_addrlen_addr) 3280 { 3281 socklen_t addrlen, ret_addrlen; 3282 void *addr; 3283 abi_long ret; 3284 3285 if (get_user_u32(addrlen, target_addrlen_addr)) 3286 return -TARGET_EFAULT; 3287 3288 if ((int)addrlen < 0) { 3289 return -TARGET_EINVAL; 3290 } 3291 3292 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 3293 return -TARGET_EFAULT; 3294 3295 addr = alloca(addrlen); 3296 3297 ret_addrlen = addrlen; 3298 ret = get_errno(getpeername(fd, addr, &ret_addrlen)); 3299 if (!is_error(ret)) { 3300 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3301 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3302 ret = -TARGET_EFAULT; 3303 } 3304 } 3305 return ret; 3306 } 3307 3308 /* do_getsockname() Must return target values and target errnos. */ 3309 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3310 abi_ulong target_addrlen_addr) 3311 { 3312 socklen_t addrlen, ret_addrlen; 3313 void *addr; 3314 abi_long ret; 3315 3316 if (get_user_u32(addrlen, target_addrlen_addr)) 3317 return -TARGET_EFAULT; 3318 3319 if ((int)addrlen < 0) { 3320 return -TARGET_EINVAL; 3321 } 3322 3323 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 3324 return -TARGET_EFAULT; 3325 3326 addr = alloca(addrlen); 3327 3328 ret_addrlen = addrlen; 3329 ret = get_errno(getsockname(fd, addr, &ret_addrlen)); 3330 if (!is_error(ret)) { 3331 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3332 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3333 ret = -TARGET_EFAULT; 3334 } 3335 } 3336 return ret; 3337 } 3338 3339 /* do_socketpair() Must return target values and target errnos. */ 3340 static abi_long do_socketpair(int domain, int type, int protocol, 3341 abi_ulong target_tab_addr) 3342 { 3343 int tab[2]; 3344 abi_long ret; 3345 3346 target_to_host_sock_type(&type); 3347 3348 ret = get_errno(socketpair(domain, type, protocol, tab)); 3349 if (!is_error(ret)) { 3350 if (put_user_s32(tab[0], target_tab_addr) 3351 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3352 ret = -TARGET_EFAULT; 3353 } 3354 return ret; 3355 } 3356 3357 /* do_sendto() Must return target values and target errnos. */ 3358 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3359 abi_ulong target_addr, socklen_t addrlen) 3360 { 3361 void *addr; 3362 void *host_msg; 3363 void *copy_msg = NULL; 3364 abi_long ret; 3365 3366 if ((int)addrlen < 0) { 3367 return -TARGET_EINVAL; 3368 } 3369 3370 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3371 if (!host_msg) 3372 return -TARGET_EFAULT; 3373 if (fd_trans_target_to_host_data(fd)) { 3374 copy_msg = host_msg; 3375 host_msg = g_malloc(len); 3376 memcpy(host_msg, copy_msg, len); 3377 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3378 if (ret < 0) { 3379 goto fail; 3380 } 3381 } 3382 if (target_addr) { 3383 addr = alloca(addrlen+1); 3384 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3385 if (ret) { 3386 goto fail; 3387 } 3388 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3389 } else { 3390 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3391 } 3392 fail: 3393 if (copy_msg) { 3394 g_free(host_msg); 3395 host_msg = copy_msg; 3396 } 3397 unlock_user(host_msg, msg, 0); 3398 return ret; 3399 } 3400 3401 /* do_recvfrom() Must return target values and target errnos. */ 3402 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 3403 abi_ulong target_addr, 3404 abi_ulong target_addrlen) 3405 { 3406 socklen_t addrlen, ret_addrlen; 3407 void *addr; 3408 void *host_msg; 3409 abi_long ret; 3410 3411 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 3412 if (!host_msg) 3413 return -TARGET_EFAULT; 3414 if (target_addr) { 3415 if (get_user_u32(addrlen, target_addrlen)) { 3416 ret = -TARGET_EFAULT; 3417 goto fail; 3418 } 3419 if ((int)addrlen < 0) { 3420 ret = -TARGET_EINVAL; 3421 goto fail; 3422 } 3423 addr = alloca(addrlen); 3424 ret_addrlen = addrlen; 3425 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 3426 addr, &ret_addrlen)); 3427 } else { 3428 addr = NULL; /* To keep compiler quiet. */ 3429 addrlen = 0; /* To keep compiler quiet. */ 3430 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 3431 } 3432 if (!is_error(ret)) { 3433 if (fd_trans_host_to_target_data(fd)) { 3434 abi_long trans; 3435 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len)); 3436 if (is_error(trans)) { 3437 ret = trans; 3438 goto fail; 3439 } 3440 } 3441 if (target_addr) { 3442 host_to_target_sockaddr(target_addr, addr, 3443 MIN(addrlen, ret_addrlen)); 3444 if (put_user_u32(ret_addrlen, target_addrlen)) { 3445 ret = -TARGET_EFAULT; 3446 goto fail; 3447 } 3448 } 3449 unlock_user(host_msg, msg, len); 3450 } else { 3451 fail: 3452 unlock_user(host_msg, msg, 0); 3453 } 3454 return ret; 3455 } 3456 3457 #ifdef TARGET_NR_socketcall 3458 /* do_socketcall() must return target values and target errnos. */ 3459 static abi_long do_socketcall(int num, abi_ulong vptr) 3460 { 3461 static const unsigned nargs[] = { /* number of arguments per operation */ 3462 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 3463 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 3464 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 3465 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 3466 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 3467 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 3468 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 3469 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 3470 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 3471 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 3472 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 3473 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 3474 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 3475 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3476 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3477 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 3478 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 3479 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 3480 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 3481 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 3482 }; 3483 abi_long a[6]; /* max 6 args */ 3484 unsigned i; 3485 3486 /* check the range of the first argument num */ 3487 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 3488 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 3489 return -TARGET_EINVAL; 3490 } 3491 /* ensure we have space for args */ 3492 if (nargs[num] > ARRAY_SIZE(a)) { 3493 return -TARGET_EINVAL; 3494 } 3495 /* collect the arguments in a[] according to nargs[] */ 3496 for (i = 0; i < nargs[num]; ++i) { 3497 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 3498 return -TARGET_EFAULT; 3499 } 3500 } 3501 /* now when we have the args, invoke the appropriate underlying function */ 3502 switch (num) { 3503 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 3504 return do_socket(a[0], a[1], a[2]); 3505 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 3506 return do_bind(a[0], a[1], a[2]); 3507 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 3508 return do_connect(a[0], a[1], a[2]); 3509 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 3510 return get_errno(listen(a[0], a[1])); 3511 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 3512 return do_accept4(a[0], a[1], a[2], 0); 3513 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 3514 return do_getsockname(a[0], a[1], a[2]); 3515 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 3516 return do_getpeername(a[0], a[1], a[2]); 3517 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 3518 return do_socketpair(a[0], a[1], a[2], a[3]); 3519 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 3520 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 3521 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 3522 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 3523 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 3524 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 3525 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 3526 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 3527 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 3528 return get_errno(shutdown(a[0], a[1])); 3529 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3530 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 3531 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3532 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 3533 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 3534 return do_sendrecvmsg(a[0], a[1], a[2], 1); 3535 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 3536 return do_sendrecvmsg(a[0], a[1], a[2], 0); 3537 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 3538 return do_accept4(a[0], a[1], a[2], a[3]); 3539 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 3540 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 3541 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 3542 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 3543 default: 3544 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); 3545 return -TARGET_EINVAL; 3546 } 3547 } 3548 #endif 3549 3550 #define N_SHM_REGIONS 32 3551 3552 static struct shm_region { 3553 abi_ulong start; 3554 abi_ulong size; 3555 bool in_use; 3556 } shm_regions[N_SHM_REGIONS]; 3557 3558 #ifndef TARGET_SEMID64_DS 3559 /* asm-generic version of this struct */ 3560 struct target_semid64_ds 3561 { 3562 struct target_ipc_perm sem_perm; 3563 abi_ulong sem_otime; 3564 #if TARGET_ABI_BITS == 32 3565 abi_ulong __unused1; 3566 #endif 3567 abi_ulong sem_ctime; 3568 #if TARGET_ABI_BITS == 32 3569 abi_ulong __unused2; 3570 #endif 3571 abi_ulong sem_nsems; 3572 abi_ulong __unused3; 3573 abi_ulong __unused4; 3574 }; 3575 #endif 3576 3577 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 3578 abi_ulong target_addr) 3579 { 3580 struct target_ipc_perm *target_ip; 3581 struct target_semid64_ds *target_sd; 3582 3583 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3584 return -TARGET_EFAULT; 3585 target_ip = &(target_sd->sem_perm); 3586 host_ip->__key = tswap32(target_ip->__key); 3587 host_ip->uid = tswap32(target_ip->uid); 3588 host_ip->gid = tswap32(target_ip->gid); 3589 host_ip->cuid = tswap32(target_ip->cuid); 3590 host_ip->cgid = tswap32(target_ip->cgid); 3591 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3592 host_ip->mode = tswap32(target_ip->mode); 3593 #else 3594 host_ip->mode = tswap16(target_ip->mode); 3595 #endif 3596 #if defined(TARGET_PPC) 3597 host_ip->__seq = tswap32(target_ip->__seq); 3598 #else 3599 host_ip->__seq = tswap16(target_ip->__seq); 3600 #endif 3601 unlock_user_struct(target_sd, target_addr, 0); 3602 return 0; 3603 } 3604 3605 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 3606 struct ipc_perm *host_ip) 3607 { 3608 struct target_ipc_perm *target_ip; 3609 struct target_semid64_ds *target_sd; 3610 3611 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3612 return -TARGET_EFAULT; 3613 target_ip = &(target_sd->sem_perm); 3614 target_ip->__key = tswap32(host_ip->__key); 3615 target_ip->uid = tswap32(host_ip->uid); 3616 target_ip->gid = tswap32(host_ip->gid); 3617 target_ip->cuid = tswap32(host_ip->cuid); 3618 target_ip->cgid = tswap32(host_ip->cgid); 3619 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3620 target_ip->mode = tswap32(host_ip->mode); 3621 #else 3622 target_ip->mode = tswap16(host_ip->mode); 3623 #endif 3624 #if defined(TARGET_PPC) 3625 target_ip->__seq = tswap32(host_ip->__seq); 3626 #else 3627 target_ip->__seq = tswap16(host_ip->__seq); 3628 #endif 3629 unlock_user_struct(target_sd, target_addr, 1); 3630 return 0; 3631 } 3632 3633 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 3634 abi_ulong target_addr) 3635 { 3636 struct target_semid64_ds *target_sd; 3637 3638 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3639 return -TARGET_EFAULT; 3640 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 3641 return -TARGET_EFAULT; 3642 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 3643 host_sd->sem_otime = tswapal(target_sd->sem_otime); 3644 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 3645 unlock_user_struct(target_sd, target_addr, 0); 3646 return 0; 3647 } 3648 3649 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 3650 struct semid_ds *host_sd) 3651 { 3652 struct target_semid64_ds *target_sd; 3653 3654 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3655 return -TARGET_EFAULT; 3656 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 3657 return -TARGET_EFAULT; 3658 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 3659 target_sd->sem_otime = tswapal(host_sd->sem_otime); 3660 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 3661 unlock_user_struct(target_sd, target_addr, 1); 3662 return 0; 3663 } 3664 3665 struct target_seminfo { 3666 int semmap; 3667 int semmni; 3668 int semmns; 3669 int semmnu; 3670 int semmsl; 3671 int semopm; 3672 int semume; 3673 int semusz; 3674 int semvmx; 3675 int semaem; 3676 }; 3677 3678 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 3679 struct seminfo *host_seminfo) 3680 { 3681 struct target_seminfo *target_seminfo; 3682 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 3683 return -TARGET_EFAULT; 3684 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 3685 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 3686 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 3687 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 3688 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 3689 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 3690 __put_user(host_seminfo->semume, &target_seminfo->semume); 3691 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 3692 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 3693 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 3694 unlock_user_struct(target_seminfo, target_addr, 1); 3695 return 0; 3696 } 3697 3698 union semun { 3699 int val; 3700 struct semid_ds *buf; 3701 unsigned short *array; 3702 struct seminfo *__buf; 3703 }; 3704 3705 union target_semun { 3706 int val; 3707 abi_ulong buf; 3708 abi_ulong array; 3709 abi_ulong __buf; 3710 }; 3711 3712 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 3713 abi_ulong target_addr) 3714 { 3715 int nsems; 3716 unsigned short *array; 3717 union semun semun; 3718 struct semid_ds semid_ds; 3719 int i, ret; 3720 3721 semun.buf = &semid_ds; 3722 3723 ret = semctl(semid, 0, IPC_STAT, semun); 3724 if (ret == -1) 3725 return get_errno(ret); 3726 3727 nsems = semid_ds.sem_nsems; 3728 3729 *host_array = g_try_new(unsigned short, nsems); 3730 if (!*host_array) { 3731 return -TARGET_ENOMEM; 3732 } 3733 array = lock_user(VERIFY_READ, target_addr, 3734 nsems*sizeof(unsigned short), 1); 3735 if (!array) { 3736 g_free(*host_array); 3737 return -TARGET_EFAULT; 3738 } 3739 3740 for(i=0; i<nsems; i++) { 3741 __get_user((*host_array)[i], &array[i]); 3742 } 3743 unlock_user(array, target_addr, 0); 3744 3745 return 0; 3746 } 3747 3748 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 3749 unsigned short **host_array) 3750 { 3751 int nsems; 3752 unsigned short *array; 3753 union semun semun; 3754 struct semid_ds semid_ds; 3755 int i, ret; 3756 3757 semun.buf = &semid_ds; 3758 3759 ret = semctl(semid, 0, IPC_STAT, semun); 3760 if (ret == -1) 3761 return get_errno(ret); 3762 3763 nsems = semid_ds.sem_nsems; 3764 3765 array = lock_user(VERIFY_WRITE, target_addr, 3766 nsems*sizeof(unsigned short), 0); 3767 if (!array) 3768 return -TARGET_EFAULT; 3769 3770 for(i=0; i<nsems; i++) { 3771 __put_user((*host_array)[i], &array[i]); 3772 } 3773 g_free(*host_array); 3774 unlock_user(array, target_addr, 1); 3775 3776 return 0; 3777 } 3778 3779 static inline abi_long do_semctl(int semid, int semnum, int cmd, 3780 abi_ulong target_arg) 3781 { 3782 union target_semun target_su = { .buf = target_arg }; 3783 union semun arg; 3784 struct semid_ds dsarg; 3785 unsigned short *array = NULL; 3786 struct seminfo seminfo; 3787 abi_long ret = -TARGET_EINVAL; 3788 abi_long err; 3789 cmd &= 0xff; 3790 3791 switch( cmd ) { 3792 case GETVAL: 3793 case SETVAL: 3794 /* In 64 bit cross-endian situations, we will erroneously pick up 3795 * the wrong half of the union for the "val" element. To rectify 3796 * this, the entire 8-byte structure is byteswapped, followed by 3797 * a swap of the 4 byte val field. In other cases, the data is 3798 * already in proper host byte order. */ 3799 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 3800 target_su.buf = tswapal(target_su.buf); 3801 arg.val = tswap32(target_su.val); 3802 } else { 3803 arg.val = target_su.val; 3804 } 3805 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3806 break; 3807 case GETALL: 3808 case SETALL: 3809 err = target_to_host_semarray(semid, &array, target_su.array); 3810 if (err) 3811 return err; 3812 arg.array = array; 3813 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3814 err = host_to_target_semarray(semid, target_su.array, &array); 3815 if (err) 3816 return err; 3817 break; 3818 case IPC_STAT: 3819 case IPC_SET: 3820 case SEM_STAT: 3821 err = target_to_host_semid_ds(&dsarg, target_su.buf); 3822 if (err) 3823 return err; 3824 arg.buf = &dsarg; 3825 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3826 err = host_to_target_semid_ds(target_su.buf, &dsarg); 3827 if (err) 3828 return err; 3829 break; 3830 case IPC_INFO: 3831 case SEM_INFO: 3832 arg.__buf = &seminfo; 3833 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3834 err = host_to_target_seminfo(target_su.__buf, &seminfo); 3835 if (err) 3836 return err; 3837 break; 3838 case IPC_RMID: 3839 case GETPID: 3840 case GETNCNT: 3841 case GETZCNT: 3842 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 3843 break; 3844 } 3845 3846 return ret; 3847 } 3848 3849 struct target_sembuf { 3850 unsigned short sem_num; 3851 short sem_op; 3852 short sem_flg; 3853 }; 3854 3855 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 3856 abi_ulong target_addr, 3857 unsigned nsops) 3858 { 3859 struct target_sembuf *target_sembuf; 3860 int i; 3861 3862 target_sembuf = lock_user(VERIFY_READ, target_addr, 3863 nsops*sizeof(struct target_sembuf), 1); 3864 if (!target_sembuf) 3865 return -TARGET_EFAULT; 3866 3867 for(i=0; i<nsops; i++) { 3868 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 3869 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 3870 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 3871 } 3872 3873 unlock_user(target_sembuf, target_addr, 0); 3874 3875 return 0; 3876 } 3877 3878 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops) 3879 { 3880 struct sembuf sops[nsops]; 3881 abi_long ret; 3882 3883 if (target_to_host_sembuf(sops, ptr, nsops)) 3884 return -TARGET_EFAULT; 3885 3886 ret = -TARGET_ENOSYS; 3887 #ifdef __NR_semtimedop 3888 ret = get_errno(safe_semtimedop(semid, sops, nsops, NULL)); 3889 #endif 3890 #ifdef __NR_ipc 3891 if (ret == -TARGET_ENOSYS) { 3892 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, nsops, 0, sops, 0)); 3893 } 3894 #endif 3895 return ret; 3896 } 3897 3898 struct target_msqid_ds 3899 { 3900 struct target_ipc_perm msg_perm; 3901 abi_ulong msg_stime; 3902 #if TARGET_ABI_BITS == 32 3903 abi_ulong __unused1; 3904 #endif 3905 abi_ulong msg_rtime; 3906 #if TARGET_ABI_BITS == 32 3907 abi_ulong __unused2; 3908 #endif 3909 abi_ulong msg_ctime; 3910 #if TARGET_ABI_BITS == 32 3911 abi_ulong __unused3; 3912 #endif 3913 abi_ulong __msg_cbytes; 3914 abi_ulong msg_qnum; 3915 abi_ulong msg_qbytes; 3916 abi_ulong msg_lspid; 3917 abi_ulong msg_lrpid; 3918 abi_ulong __unused4; 3919 abi_ulong __unused5; 3920 }; 3921 3922 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 3923 abi_ulong target_addr) 3924 { 3925 struct target_msqid_ds *target_md; 3926 3927 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 3928 return -TARGET_EFAULT; 3929 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 3930 return -TARGET_EFAULT; 3931 host_md->msg_stime = tswapal(target_md->msg_stime); 3932 host_md->msg_rtime = tswapal(target_md->msg_rtime); 3933 host_md->msg_ctime = tswapal(target_md->msg_ctime); 3934 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 3935 host_md->msg_qnum = tswapal(target_md->msg_qnum); 3936 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 3937 host_md->msg_lspid = tswapal(target_md->msg_lspid); 3938 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 3939 unlock_user_struct(target_md, target_addr, 0); 3940 return 0; 3941 } 3942 3943 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 3944 struct msqid_ds *host_md) 3945 { 3946 struct target_msqid_ds *target_md; 3947 3948 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 3949 return -TARGET_EFAULT; 3950 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 3951 return -TARGET_EFAULT; 3952 target_md->msg_stime = tswapal(host_md->msg_stime); 3953 target_md->msg_rtime = tswapal(host_md->msg_rtime); 3954 target_md->msg_ctime = tswapal(host_md->msg_ctime); 3955 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 3956 target_md->msg_qnum = tswapal(host_md->msg_qnum); 3957 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 3958 target_md->msg_lspid = tswapal(host_md->msg_lspid); 3959 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 3960 unlock_user_struct(target_md, target_addr, 1); 3961 return 0; 3962 } 3963 3964 struct target_msginfo { 3965 int msgpool; 3966 int msgmap; 3967 int msgmax; 3968 int msgmnb; 3969 int msgmni; 3970 int msgssz; 3971 int msgtql; 3972 unsigned short int msgseg; 3973 }; 3974 3975 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 3976 struct msginfo *host_msginfo) 3977 { 3978 struct target_msginfo *target_msginfo; 3979 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 3980 return -TARGET_EFAULT; 3981 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 3982 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 3983 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 3984 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 3985 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 3986 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 3987 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 3988 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 3989 unlock_user_struct(target_msginfo, target_addr, 1); 3990 return 0; 3991 } 3992 3993 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 3994 { 3995 struct msqid_ds dsarg; 3996 struct msginfo msginfo; 3997 abi_long ret = -TARGET_EINVAL; 3998 3999 cmd &= 0xff; 4000 4001 switch (cmd) { 4002 case IPC_STAT: 4003 case IPC_SET: 4004 case MSG_STAT: 4005 if (target_to_host_msqid_ds(&dsarg,ptr)) 4006 return -TARGET_EFAULT; 4007 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4008 if (host_to_target_msqid_ds(ptr,&dsarg)) 4009 return -TARGET_EFAULT; 4010 break; 4011 case IPC_RMID: 4012 ret = get_errno(msgctl(msgid, cmd, NULL)); 4013 break; 4014 case IPC_INFO: 4015 case MSG_INFO: 4016 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4017 if (host_to_target_msginfo(ptr, &msginfo)) 4018 return -TARGET_EFAULT; 4019 break; 4020 } 4021 4022 return ret; 4023 } 4024 4025 struct target_msgbuf { 4026 abi_long mtype; 4027 char mtext[1]; 4028 }; 4029 4030 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4031 ssize_t msgsz, int msgflg) 4032 { 4033 struct target_msgbuf *target_mb; 4034 struct msgbuf *host_mb; 4035 abi_long ret = 0; 4036 4037 if (msgsz < 0) { 4038 return -TARGET_EINVAL; 4039 } 4040 4041 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4042 return -TARGET_EFAULT; 4043 host_mb = g_try_malloc(msgsz + sizeof(long)); 4044 if (!host_mb) { 4045 unlock_user_struct(target_mb, msgp, 0); 4046 return -TARGET_ENOMEM; 4047 } 4048 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4049 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4050 ret = -TARGET_ENOSYS; 4051 #ifdef __NR_msgsnd 4052 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4053 #endif 4054 #ifdef __NR_ipc 4055 if (ret == -TARGET_ENOSYS) { 4056 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4057 host_mb, 0)); 4058 } 4059 #endif 4060 g_free(host_mb); 4061 unlock_user_struct(target_mb, msgp, 0); 4062 4063 return ret; 4064 } 4065 4066 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4067 ssize_t msgsz, abi_long msgtyp, 4068 int msgflg) 4069 { 4070 struct target_msgbuf *target_mb; 4071 char *target_mtext; 4072 struct msgbuf *host_mb; 4073 abi_long ret = 0; 4074 4075 if (msgsz < 0) { 4076 return -TARGET_EINVAL; 4077 } 4078 4079 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4080 return -TARGET_EFAULT; 4081 4082 host_mb = g_try_malloc(msgsz + sizeof(long)); 4083 if (!host_mb) { 4084 ret = -TARGET_ENOMEM; 4085 goto end; 4086 } 4087 ret = -TARGET_ENOSYS; 4088 #ifdef __NR_msgrcv 4089 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4090 #endif 4091 #ifdef __NR_ipc 4092 if (ret == -TARGET_ENOSYS) { 4093 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz, 4094 msgflg, host_mb, msgtyp)); 4095 } 4096 #endif 4097 4098 if (ret > 0) { 4099 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4100 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4101 if (!target_mtext) { 4102 ret = -TARGET_EFAULT; 4103 goto end; 4104 } 4105 memcpy(target_mb->mtext, host_mb->mtext, ret); 4106 unlock_user(target_mtext, target_mtext_addr, ret); 4107 } 4108 4109 target_mb->mtype = tswapal(host_mb->mtype); 4110 4111 end: 4112 if (target_mb) 4113 unlock_user_struct(target_mb, msgp, 1); 4114 g_free(host_mb); 4115 return ret; 4116 } 4117 4118 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4119 abi_ulong target_addr) 4120 { 4121 struct target_shmid_ds *target_sd; 4122 4123 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4124 return -TARGET_EFAULT; 4125 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4126 return -TARGET_EFAULT; 4127 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4128 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4129 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4130 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4131 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4132 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4133 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4134 unlock_user_struct(target_sd, target_addr, 0); 4135 return 0; 4136 } 4137 4138 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4139 struct shmid_ds *host_sd) 4140 { 4141 struct target_shmid_ds *target_sd; 4142 4143 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4144 return -TARGET_EFAULT; 4145 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4146 return -TARGET_EFAULT; 4147 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4148 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4149 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4150 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4151 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4152 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4153 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4154 unlock_user_struct(target_sd, target_addr, 1); 4155 return 0; 4156 } 4157 4158 struct target_shminfo { 4159 abi_ulong shmmax; 4160 abi_ulong shmmin; 4161 abi_ulong shmmni; 4162 abi_ulong shmseg; 4163 abi_ulong shmall; 4164 }; 4165 4166 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4167 struct shminfo *host_shminfo) 4168 { 4169 struct target_shminfo *target_shminfo; 4170 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4171 return -TARGET_EFAULT; 4172 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4173 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4174 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4175 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4176 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4177 unlock_user_struct(target_shminfo, target_addr, 1); 4178 return 0; 4179 } 4180 4181 struct target_shm_info { 4182 int used_ids; 4183 abi_ulong shm_tot; 4184 abi_ulong shm_rss; 4185 abi_ulong shm_swp; 4186 abi_ulong swap_attempts; 4187 abi_ulong swap_successes; 4188 }; 4189 4190 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4191 struct shm_info *host_shm_info) 4192 { 4193 struct target_shm_info *target_shm_info; 4194 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4195 return -TARGET_EFAULT; 4196 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4197 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4198 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4199 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4200 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4201 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4202 unlock_user_struct(target_shm_info, target_addr, 1); 4203 return 0; 4204 } 4205 4206 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4207 { 4208 struct shmid_ds dsarg; 4209 struct shminfo shminfo; 4210 struct shm_info shm_info; 4211 abi_long ret = -TARGET_EINVAL; 4212 4213 cmd &= 0xff; 4214 4215 switch(cmd) { 4216 case IPC_STAT: 4217 case IPC_SET: 4218 case SHM_STAT: 4219 if (target_to_host_shmid_ds(&dsarg, buf)) 4220 return -TARGET_EFAULT; 4221 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4222 if (host_to_target_shmid_ds(buf, &dsarg)) 4223 return -TARGET_EFAULT; 4224 break; 4225 case IPC_INFO: 4226 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4227 if (host_to_target_shminfo(buf, &shminfo)) 4228 return -TARGET_EFAULT; 4229 break; 4230 case SHM_INFO: 4231 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4232 if (host_to_target_shm_info(buf, &shm_info)) 4233 return -TARGET_EFAULT; 4234 break; 4235 case IPC_RMID: 4236 case SHM_LOCK: 4237 case SHM_UNLOCK: 4238 ret = get_errno(shmctl(shmid, cmd, NULL)); 4239 break; 4240 } 4241 4242 return ret; 4243 } 4244 4245 #ifndef TARGET_FORCE_SHMLBA 4246 /* For most architectures, SHMLBA is the same as the page size; 4247 * some architectures have larger values, in which case they should 4248 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4249 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4250 * and defining its own value for SHMLBA. 4251 * 4252 * The kernel also permits SHMLBA to be set by the architecture to a 4253 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4254 * this means that addresses are rounded to the large size if 4255 * SHM_RND is set but addresses not aligned to that size are not rejected 4256 * as long as they are at least page-aligned. Since the only architecture 4257 * which uses this is ia64 this code doesn't provide for that oddity. 4258 */ 4259 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4260 { 4261 return TARGET_PAGE_SIZE; 4262 } 4263 #endif 4264 4265 static inline abi_ulong do_shmat(CPUArchState *cpu_env, 4266 int shmid, abi_ulong shmaddr, int shmflg) 4267 { 4268 abi_long raddr; 4269 void *host_raddr; 4270 struct shmid_ds shm_info; 4271 int i,ret; 4272 abi_ulong shmlba; 4273 4274 /* find out the length of the shared memory segment */ 4275 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4276 if (is_error(ret)) { 4277 /* can't get length, bail out */ 4278 return ret; 4279 } 4280 4281 shmlba = target_shmlba(cpu_env); 4282 4283 if (shmaddr & (shmlba - 1)) { 4284 if (shmflg & SHM_RND) { 4285 shmaddr &= ~(shmlba - 1); 4286 } else { 4287 return -TARGET_EINVAL; 4288 } 4289 } 4290 if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) { 4291 return -TARGET_EINVAL; 4292 } 4293 4294 mmap_lock(); 4295 4296 if (shmaddr) 4297 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg); 4298 else { 4299 abi_ulong mmap_start; 4300 4301 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4302 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4303 4304 if (mmap_start == -1) { 4305 errno = ENOMEM; 4306 host_raddr = (void *)-1; 4307 } else 4308 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP); 4309 } 4310 4311 if (host_raddr == (void *)-1) { 4312 mmap_unlock(); 4313 return get_errno((long)host_raddr); 4314 } 4315 raddr=h2g((unsigned long)host_raddr); 4316 4317 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4318 PAGE_VALID | PAGE_READ | 4319 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE)); 4320 4321 for (i = 0; i < N_SHM_REGIONS; i++) { 4322 if (!shm_regions[i].in_use) { 4323 shm_regions[i].in_use = true; 4324 shm_regions[i].start = raddr; 4325 shm_regions[i].size = shm_info.shm_segsz; 4326 break; 4327 } 4328 } 4329 4330 mmap_unlock(); 4331 return raddr; 4332 4333 } 4334 4335 static inline abi_long do_shmdt(abi_ulong shmaddr) 4336 { 4337 int i; 4338 abi_long rv; 4339 4340 mmap_lock(); 4341 4342 for (i = 0; i < N_SHM_REGIONS; ++i) { 4343 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4344 shm_regions[i].in_use = false; 4345 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4346 break; 4347 } 4348 } 4349 rv = get_errno(shmdt(g2h(shmaddr))); 4350 4351 mmap_unlock(); 4352 4353 return rv; 4354 } 4355 4356 #ifdef TARGET_NR_ipc 4357 /* ??? This only works with linear mappings. */ 4358 /* do_ipc() must return target values and target errnos. */ 4359 static abi_long do_ipc(CPUArchState *cpu_env, 4360 unsigned int call, abi_long first, 4361 abi_long second, abi_long third, 4362 abi_long ptr, abi_long fifth) 4363 { 4364 int version; 4365 abi_long ret = 0; 4366 4367 version = call >> 16; 4368 call &= 0xffff; 4369 4370 switch (call) { 4371 case IPCOP_semop: 4372 ret = do_semop(first, ptr, second); 4373 break; 4374 4375 case IPCOP_semget: 4376 ret = get_errno(semget(first, second, third)); 4377 break; 4378 4379 case IPCOP_semctl: { 4380 /* The semun argument to semctl is passed by value, so dereference the 4381 * ptr argument. */ 4382 abi_ulong atptr; 4383 get_user_ual(atptr, ptr); 4384 ret = do_semctl(first, second, third, atptr); 4385 break; 4386 } 4387 4388 case IPCOP_msgget: 4389 ret = get_errno(msgget(first, second)); 4390 break; 4391 4392 case IPCOP_msgsnd: 4393 ret = do_msgsnd(first, ptr, second, third); 4394 break; 4395 4396 case IPCOP_msgctl: 4397 ret = do_msgctl(first, second, ptr); 4398 break; 4399 4400 case IPCOP_msgrcv: 4401 switch (version) { 4402 case 0: 4403 { 4404 struct target_ipc_kludge { 4405 abi_long msgp; 4406 abi_long msgtyp; 4407 } *tmp; 4408 4409 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4410 ret = -TARGET_EFAULT; 4411 break; 4412 } 4413 4414 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4415 4416 unlock_user_struct(tmp, ptr, 0); 4417 break; 4418 } 4419 default: 4420 ret = do_msgrcv(first, ptr, second, fifth, third); 4421 } 4422 break; 4423 4424 case IPCOP_shmat: 4425 switch (version) { 4426 default: 4427 { 4428 abi_ulong raddr; 4429 raddr = do_shmat(cpu_env, first, ptr, second); 4430 if (is_error(raddr)) 4431 return get_errno(raddr); 4432 if (put_user_ual(raddr, third)) 4433 return -TARGET_EFAULT; 4434 break; 4435 } 4436 case 1: 4437 ret = -TARGET_EINVAL; 4438 break; 4439 } 4440 break; 4441 case IPCOP_shmdt: 4442 ret = do_shmdt(ptr); 4443 break; 4444 4445 case IPCOP_shmget: 4446 /* IPC_* flag values are the same on all linux platforms */ 4447 ret = get_errno(shmget(first, second, third)); 4448 break; 4449 4450 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4451 case IPCOP_shmctl: 4452 ret = do_shmctl(first, second, ptr); 4453 break; 4454 default: 4455 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4456 call, version); 4457 ret = -TARGET_ENOSYS; 4458 break; 4459 } 4460 return ret; 4461 } 4462 #endif 4463 4464 /* kernel structure types definitions */ 4465 4466 #define STRUCT(name, ...) STRUCT_ ## name, 4467 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4468 enum { 4469 #include "syscall_types.h" 4470 STRUCT_MAX 4471 }; 4472 #undef STRUCT 4473 #undef STRUCT_SPECIAL 4474 4475 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4476 #define STRUCT_SPECIAL(name) 4477 #include "syscall_types.h" 4478 #undef STRUCT 4479 #undef STRUCT_SPECIAL 4480 4481 typedef struct IOCTLEntry IOCTLEntry; 4482 4483 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, 4484 int fd, int cmd, abi_long arg); 4485 4486 struct IOCTLEntry { 4487 int target_cmd; 4488 unsigned int host_cmd; 4489 const char *name; 4490 int access; 4491 do_ioctl_fn *do_ioctl; 4492 const argtype arg_type[5]; 4493 }; 4494 4495 #define IOC_R 0x0001 4496 #define IOC_W 0x0002 4497 #define IOC_RW (IOC_R | IOC_W) 4498 4499 #define MAX_STRUCT_SIZE 4096 4500 4501 #ifdef CONFIG_FIEMAP 4502 /* So fiemap access checks don't overflow on 32 bit systems. 4503 * This is very slightly smaller than the limit imposed by 4504 * the underlying kernel. 4505 */ 4506 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4507 / sizeof(struct fiemap_extent)) 4508 4509 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4510 int fd, int cmd, abi_long arg) 4511 { 4512 /* The parameter for this ioctl is a struct fiemap followed 4513 * by an array of struct fiemap_extent whose size is set 4514 * in fiemap->fm_extent_count. The array is filled in by the 4515 * ioctl. 4516 */ 4517 int target_size_in, target_size_out; 4518 struct fiemap *fm; 4519 const argtype *arg_type = ie->arg_type; 4520 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4521 void *argptr, *p; 4522 abi_long ret; 4523 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4524 uint32_t outbufsz; 4525 int free_fm = 0; 4526 4527 assert(arg_type[0] == TYPE_PTR); 4528 assert(ie->access == IOC_RW); 4529 arg_type++; 4530 target_size_in = thunk_type_size(arg_type, 0); 4531 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4532 if (!argptr) { 4533 return -TARGET_EFAULT; 4534 } 4535 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4536 unlock_user(argptr, arg, 0); 4537 fm = (struct fiemap *)buf_temp; 4538 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4539 return -TARGET_EINVAL; 4540 } 4541 4542 outbufsz = sizeof (*fm) + 4543 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4544 4545 if (outbufsz > MAX_STRUCT_SIZE) { 4546 /* We can't fit all the extents into the fixed size buffer. 4547 * Allocate one that is large enough and use it instead. 4548 */ 4549 fm = g_try_malloc(outbufsz); 4550 if (!fm) { 4551 return -TARGET_ENOMEM; 4552 } 4553 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4554 free_fm = 1; 4555 } 4556 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4557 if (!is_error(ret)) { 4558 target_size_out = target_size_in; 4559 /* An extent_count of 0 means we were only counting the extents 4560 * so there are no structs to copy 4561 */ 4562 if (fm->fm_extent_count != 0) { 4563 target_size_out += fm->fm_mapped_extents * extent_size; 4564 } 4565 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4566 if (!argptr) { 4567 ret = -TARGET_EFAULT; 4568 } else { 4569 /* Convert the struct fiemap */ 4570 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4571 if (fm->fm_extent_count != 0) { 4572 p = argptr + target_size_in; 4573 /* ...and then all the struct fiemap_extents */ 4574 for (i = 0; i < fm->fm_mapped_extents; i++) { 4575 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4576 THUNK_TARGET); 4577 p += extent_size; 4578 } 4579 } 4580 unlock_user(argptr, arg, target_size_out); 4581 } 4582 } 4583 if (free_fm) { 4584 g_free(fm); 4585 } 4586 return ret; 4587 } 4588 #endif 4589 4590 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4591 int fd, int cmd, abi_long arg) 4592 { 4593 const argtype *arg_type = ie->arg_type; 4594 int target_size; 4595 void *argptr; 4596 int ret; 4597 struct ifconf *host_ifconf; 4598 uint32_t outbufsz; 4599 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4600 int target_ifreq_size; 4601 int nb_ifreq; 4602 int free_buf = 0; 4603 int i; 4604 int target_ifc_len; 4605 abi_long target_ifc_buf; 4606 int host_ifc_len; 4607 char *host_ifc_buf; 4608 4609 assert(arg_type[0] == TYPE_PTR); 4610 assert(ie->access == IOC_RW); 4611 4612 arg_type++; 4613 target_size = thunk_type_size(arg_type, 0); 4614 4615 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4616 if (!argptr) 4617 return -TARGET_EFAULT; 4618 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4619 unlock_user(argptr, arg, 0); 4620 4621 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4622 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4623 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0); 4624 4625 if (target_ifc_buf != 0) { 4626 target_ifc_len = host_ifconf->ifc_len; 4627 nb_ifreq = target_ifc_len / target_ifreq_size; 4628 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4629 4630 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4631 if (outbufsz > MAX_STRUCT_SIZE) { 4632 /* 4633 * We can't fit all the extents into the fixed size buffer. 4634 * Allocate one that is large enough and use it instead. 4635 */ 4636 host_ifconf = malloc(outbufsz); 4637 if (!host_ifconf) { 4638 return -TARGET_ENOMEM; 4639 } 4640 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4641 free_buf = 1; 4642 } 4643 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4644 4645 host_ifconf->ifc_len = host_ifc_len; 4646 } else { 4647 host_ifc_buf = NULL; 4648 } 4649 host_ifconf->ifc_buf = host_ifc_buf; 4650 4651 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 4652 if (!is_error(ret)) { 4653 /* convert host ifc_len to target ifc_len */ 4654 4655 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 4656 target_ifc_len = nb_ifreq * target_ifreq_size; 4657 host_ifconf->ifc_len = target_ifc_len; 4658 4659 /* restore target ifc_buf */ 4660 4661 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 4662 4663 /* copy struct ifconf to target user */ 4664 4665 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 4666 if (!argptr) 4667 return -TARGET_EFAULT; 4668 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 4669 unlock_user(argptr, arg, target_size); 4670 4671 if (target_ifc_buf != 0) { 4672 /* copy ifreq[] to target user */ 4673 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 4674 for (i = 0; i < nb_ifreq ; i++) { 4675 thunk_convert(argptr + i * target_ifreq_size, 4676 host_ifc_buf + i * sizeof(struct ifreq), 4677 ifreq_arg_type, THUNK_TARGET); 4678 } 4679 unlock_user(argptr, target_ifc_buf, target_ifc_len); 4680 } 4681 } 4682 4683 if (free_buf) { 4684 free(host_ifconf); 4685 } 4686 4687 return ret; 4688 } 4689 4690 #if defined(CONFIG_USBFS) 4691 #if HOST_LONG_BITS > 64 4692 #error USBDEVFS thunks do not support >64 bit hosts yet. 4693 #endif 4694 struct live_urb { 4695 uint64_t target_urb_adr; 4696 uint64_t target_buf_adr; 4697 char *target_buf_ptr; 4698 struct usbdevfs_urb host_urb; 4699 }; 4700 4701 static GHashTable *usbdevfs_urb_hashtable(void) 4702 { 4703 static GHashTable *urb_hashtable; 4704 4705 if (!urb_hashtable) { 4706 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 4707 } 4708 return urb_hashtable; 4709 } 4710 4711 static void urb_hashtable_insert(struct live_urb *urb) 4712 { 4713 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4714 g_hash_table_insert(urb_hashtable, urb, urb); 4715 } 4716 4717 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 4718 { 4719 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4720 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 4721 } 4722 4723 static void urb_hashtable_remove(struct live_urb *urb) 4724 { 4725 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4726 g_hash_table_remove(urb_hashtable, urb); 4727 } 4728 4729 static abi_long 4730 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 4731 int fd, int cmd, abi_long arg) 4732 { 4733 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 4734 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 4735 struct live_urb *lurb; 4736 void *argptr; 4737 uint64_t hurb; 4738 int target_size; 4739 uintptr_t target_urb_adr; 4740 abi_long ret; 4741 4742 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 4743 4744 memset(buf_temp, 0, sizeof(uint64_t)); 4745 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 4746 if (is_error(ret)) { 4747 return ret; 4748 } 4749 4750 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 4751 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 4752 if (!lurb->target_urb_adr) { 4753 return -TARGET_EFAULT; 4754 } 4755 urb_hashtable_remove(lurb); 4756 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 4757 lurb->host_urb.buffer_length); 4758 lurb->target_buf_ptr = NULL; 4759 4760 /* restore the guest buffer pointer */ 4761 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 4762 4763 /* update the guest urb struct */ 4764 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 4765 if (!argptr) { 4766 g_free(lurb); 4767 return -TARGET_EFAULT; 4768 } 4769 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 4770 unlock_user(argptr, lurb->target_urb_adr, target_size); 4771 4772 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 4773 /* write back the urb handle */ 4774 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 4775 if (!argptr) { 4776 g_free(lurb); 4777 return -TARGET_EFAULT; 4778 } 4779 4780 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 4781 target_urb_adr = lurb->target_urb_adr; 4782 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 4783 unlock_user(argptr, arg, target_size); 4784 4785 g_free(lurb); 4786 return ret; 4787 } 4788 4789 static abi_long 4790 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 4791 uint8_t *buf_temp __attribute__((unused)), 4792 int fd, int cmd, abi_long arg) 4793 { 4794 struct live_urb *lurb; 4795 4796 /* map target address back to host URB with metadata. */ 4797 lurb = urb_hashtable_lookup(arg); 4798 if (!lurb) { 4799 return -TARGET_EFAULT; 4800 } 4801 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 4802 } 4803 4804 static abi_long 4805 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 4806 int fd, int cmd, abi_long arg) 4807 { 4808 const argtype *arg_type = ie->arg_type; 4809 int target_size; 4810 abi_long ret; 4811 void *argptr; 4812 int rw_dir; 4813 struct live_urb *lurb; 4814 4815 /* 4816 * each submitted URB needs to map to a unique ID for the 4817 * kernel, and that unique ID needs to be a pointer to 4818 * host memory. hence, we need to malloc for each URB. 4819 * isochronous transfers have a variable length struct. 4820 */ 4821 arg_type++; 4822 target_size = thunk_type_size(arg_type, THUNK_TARGET); 4823 4824 /* construct host copy of urb and metadata */ 4825 lurb = g_try_malloc0(sizeof(struct live_urb)); 4826 if (!lurb) { 4827 return -TARGET_ENOMEM; 4828 } 4829 4830 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4831 if (!argptr) { 4832 g_free(lurb); 4833 return -TARGET_EFAULT; 4834 } 4835 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 4836 unlock_user(argptr, arg, 0); 4837 4838 lurb->target_urb_adr = arg; 4839 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 4840 4841 /* buffer space used depends on endpoint type so lock the entire buffer */ 4842 /* control type urbs should check the buffer contents for true direction */ 4843 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 4844 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 4845 lurb->host_urb.buffer_length, 1); 4846 if (lurb->target_buf_ptr == NULL) { 4847 g_free(lurb); 4848 return -TARGET_EFAULT; 4849 } 4850 4851 /* update buffer pointer in host copy */ 4852 lurb->host_urb.buffer = lurb->target_buf_ptr; 4853 4854 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 4855 if (is_error(ret)) { 4856 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 4857 g_free(lurb); 4858 } else { 4859 urb_hashtable_insert(lurb); 4860 } 4861 4862 return ret; 4863 } 4864 #endif /* CONFIG_USBFS */ 4865 4866 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 4867 int cmd, abi_long arg) 4868 { 4869 void *argptr; 4870 struct dm_ioctl *host_dm; 4871 abi_long guest_data; 4872 uint32_t guest_data_size; 4873 int target_size; 4874 const argtype *arg_type = ie->arg_type; 4875 abi_long ret; 4876 void *big_buf = NULL; 4877 char *host_data; 4878 4879 arg_type++; 4880 target_size = thunk_type_size(arg_type, 0); 4881 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4882 if (!argptr) { 4883 ret = -TARGET_EFAULT; 4884 goto out; 4885 } 4886 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4887 unlock_user(argptr, arg, 0); 4888 4889 /* buf_temp is too small, so fetch things into a bigger buffer */ 4890 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 4891 memcpy(big_buf, buf_temp, target_size); 4892 buf_temp = big_buf; 4893 host_dm = big_buf; 4894 4895 guest_data = arg + host_dm->data_start; 4896 if ((guest_data - arg) < 0) { 4897 ret = -TARGET_EINVAL; 4898 goto out; 4899 } 4900 guest_data_size = host_dm->data_size - host_dm->data_start; 4901 host_data = (char*)host_dm + host_dm->data_start; 4902 4903 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 4904 if (!argptr) { 4905 ret = -TARGET_EFAULT; 4906 goto out; 4907 } 4908 4909 switch (ie->host_cmd) { 4910 case DM_REMOVE_ALL: 4911 case DM_LIST_DEVICES: 4912 case DM_DEV_CREATE: 4913 case DM_DEV_REMOVE: 4914 case DM_DEV_SUSPEND: 4915 case DM_DEV_STATUS: 4916 case DM_DEV_WAIT: 4917 case DM_TABLE_STATUS: 4918 case DM_TABLE_CLEAR: 4919 case DM_TABLE_DEPS: 4920 case DM_LIST_VERSIONS: 4921 /* no input data */ 4922 break; 4923 case DM_DEV_RENAME: 4924 case DM_DEV_SET_GEOMETRY: 4925 /* data contains only strings */ 4926 memcpy(host_data, argptr, guest_data_size); 4927 break; 4928 case DM_TARGET_MSG: 4929 memcpy(host_data, argptr, guest_data_size); 4930 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 4931 break; 4932 case DM_TABLE_LOAD: 4933 { 4934 void *gspec = argptr; 4935 void *cur_data = host_data; 4936 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 4937 int spec_size = thunk_type_size(arg_type, 0); 4938 int i; 4939 4940 for (i = 0; i < host_dm->target_count; i++) { 4941 struct dm_target_spec *spec = cur_data; 4942 uint32_t next; 4943 int slen; 4944 4945 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 4946 slen = strlen((char*)gspec + spec_size) + 1; 4947 next = spec->next; 4948 spec->next = sizeof(*spec) + slen; 4949 strcpy((char*)&spec[1], gspec + spec_size); 4950 gspec += next; 4951 cur_data += spec->next; 4952 } 4953 break; 4954 } 4955 default: 4956 ret = -TARGET_EINVAL; 4957 unlock_user(argptr, guest_data, 0); 4958 goto out; 4959 } 4960 unlock_user(argptr, guest_data, 0); 4961 4962 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 4963 if (!is_error(ret)) { 4964 guest_data = arg + host_dm->data_start; 4965 guest_data_size = host_dm->data_size - host_dm->data_start; 4966 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 4967 switch (ie->host_cmd) { 4968 case DM_REMOVE_ALL: 4969 case DM_DEV_CREATE: 4970 case DM_DEV_REMOVE: 4971 case DM_DEV_RENAME: 4972 case DM_DEV_SUSPEND: 4973 case DM_DEV_STATUS: 4974 case DM_TABLE_LOAD: 4975 case DM_TABLE_CLEAR: 4976 case DM_TARGET_MSG: 4977 case DM_DEV_SET_GEOMETRY: 4978 /* no return data */ 4979 break; 4980 case DM_LIST_DEVICES: 4981 { 4982 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 4983 uint32_t remaining_data = guest_data_size; 4984 void *cur_data = argptr; 4985 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 4986 int nl_size = 12; /* can't use thunk_size due to alignment */ 4987 4988 while (1) { 4989 uint32_t next = nl->next; 4990 if (next) { 4991 nl->next = nl_size + (strlen(nl->name) + 1); 4992 } 4993 if (remaining_data < nl->next) { 4994 host_dm->flags |= DM_BUFFER_FULL_FLAG; 4995 break; 4996 } 4997 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 4998 strcpy(cur_data + nl_size, nl->name); 4999 cur_data += nl->next; 5000 remaining_data -= nl->next; 5001 if (!next) { 5002 break; 5003 } 5004 nl = (void*)nl + next; 5005 } 5006 break; 5007 } 5008 case DM_DEV_WAIT: 5009 case DM_TABLE_STATUS: 5010 { 5011 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5012 void *cur_data = argptr; 5013 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5014 int spec_size = thunk_type_size(arg_type, 0); 5015 int i; 5016 5017 for (i = 0; i < host_dm->target_count; i++) { 5018 uint32_t next = spec->next; 5019 int slen = strlen((char*)&spec[1]) + 1; 5020 spec->next = (cur_data - argptr) + spec_size + slen; 5021 if (guest_data_size < spec->next) { 5022 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5023 break; 5024 } 5025 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5026 strcpy(cur_data + spec_size, (char*)&spec[1]); 5027 cur_data = argptr + spec->next; 5028 spec = (void*)host_dm + host_dm->data_start + next; 5029 } 5030 break; 5031 } 5032 case DM_TABLE_DEPS: 5033 { 5034 void *hdata = (void*)host_dm + host_dm->data_start; 5035 int count = *(uint32_t*)hdata; 5036 uint64_t *hdev = hdata + 8; 5037 uint64_t *gdev = argptr + 8; 5038 int i; 5039 5040 *(uint32_t*)argptr = tswap32(count); 5041 for (i = 0; i < count; i++) { 5042 *gdev = tswap64(*hdev); 5043 gdev++; 5044 hdev++; 5045 } 5046 break; 5047 } 5048 case DM_LIST_VERSIONS: 5049 { 5050 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5051 uint32_t remaining_data = guest_data_size; 5052 void *cur_data = argptr; 5053 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5054 int vers_size = thunk_type_size(arg_type, 0); 5055 5056 while (1) { 5057 uint32_t next = vers->next; 5058 if (next) { 5059 vers->next = vers_size + (strlen(vers->name) + 1); 5060 } 5061 if (remaining_data < vers->next) { 5062 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5063 break; 5064 } 5065 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5066 strcpy(cur_data + vers_size, vers->name); 5067 cur_data += vers->next; 5068 remaining_data -= vers->next; 5069 if (!next) { 5070 break; 5071 } 5072 vers = (void*)vers + next; 5073 } 5074 break; 5075 } 5076 default: 5077 unlock_user(argptr, guest_data, 0); 5078 ret = -TARGET_EINVAL; 5079 goto out; 5080 } 5081 unlock_user(argptr, guest_data, guest_data_size); 5082 5083 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5084 if (!argptr) { 5085 ret = -TARGET_EFAULT; 5086 goto out; 5087 } 5088 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5089 unlock_user(argptr, arg, target_size); 5090 } 5091 out: 5092 g_free(big_buf); 5093 return ret; 5094 } 5095 5096 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5097 int cmd, abi_long arg) 5098 { 5099 void *argptr; 5100 int target_size; 5101 const argtype *arg_type = ie->arg_type; 5102 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5103 abi_long ret; 5104 5105 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5106 struct blkpg_partition host_part; 5107 5108 /* Read and convert blkpg */ 5109 arg_type++; 5110 target_size = thunk_type_size(arg_type, 0); 5111 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5112 if (!argptr) { 5113 ret = -TARGET_EFAULT; 5114 goto out; 5115 } 5116 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5117 unlock_user(argptr, arg, 0); 5118 5119 switch (host_blkpg->op) { 5120 case BLKPG_ADD_PARTITION: 5121 case BLKPG_DEL_PARTITION: 5122 /* payload is struct blkpg_partition */ 5123 break; 5124 default: 5125 /* Unknown opcode */ 5126 ret = -TARGET_EINVAL; 5127 goto out; 5128 } 5129 5130 /* Read and convert blkpg->data */ 5131 arg = (abi_long)(uintptr_t)host_blkpg->data; 5132 target_size = thunk_type_size(part_arg_type, 0); 5133 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5134 if (!argptr) { 5135 ret = -TARGET_EFAULT; 5136 goto out; 5137 } 5138 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5139 unlock_user(argptr, arg, 0); 5140 5141 /* Swizzle the data pointer to our local copy and call! */ 5142 host_blkpg->data = &host_part; 5143 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5144 5145 out: 5146 return ret; 5147 } 5148 5149 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5150 int fd, int cmd, abi_long arg) 5151 { 5152 const argtype *arg_type = ie->arg_type; 5153 const StructEntry *se; 5154 const argtype *field_types; 5155 const int *dst_offsets, *src_offsets; 5156 int target_size; 5157 void *argptr; 5158 abi_ulong *target_rt_dev_ptr = NULL; 5159 unsigned long *host_rt_dev_ptr = NULL; 5160 abi_long ret; 5161 int i; 5162 5163 assert(ie->access == IOC_W); 5164 assert(*arg_type == TYPE_PTR); 5165 arg_type++; 5166 assert(*arg_type == TYPE_STRUCT); 5167 target_size = thunk_type_size(arg_type, 0); 5168 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5169 if (!argptr) { 5170 return -TARGET_EFAULT; 5171 } 5172 arg_type++; 5173 assert(*arg_type == (int)STRUCT_rtentry); 5174 se = struct_entries + *arg_type++; 5175 assert(se->convert[0] == NULL); 5176 /* convert struct here to be able to catch rt_dev string */ 5177 field_types = se->field_types; 5178 dst_offsets = se->field_offsets[THUNK_HOST]; 5179 src_offsets = se->field_offsets[THUNK_TARGET]; 5180 for (i = 0; i < se->nb_fields; i++) { 5181 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5182 assert(*field_types == TYPE_PTRVOID); 5183 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5184 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5185 if (*target_rt_dev_ptr != 0) { 5186 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5187 tswapal(*target_rt_dev_ptr)); 5188 if (!*host_rt_dev_ptr) { 5189 unlock_user(argptr, arg, 0); 5190 return -TARGET_EFAULT; 5191 } 5192 } else { 5193 *host_rt_dev_ptr = 0; 5194 } 5195 field_types++; 5196 continue; 5197 } 5198 field_types = thunk_convert(buf_temp + dst_offsets[i], 5199 argptr + src_offsets[i], 5200 field_types, THUNK_HOST); 5201 } 5202 unlock_user(argptr, arg, 0); 5203 5204 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5205 5206 assert(host_rt_dev_ptr != NULL); 5207 assert(target_rt_dev_ptr != NULL); 5208 if (*host_rt_dev_ptr != 0) { 5209 unlock_user((void *)*host_rt_dev_ptr, 5210 *target_rt_dev_ptr, 0); 5211 } 5212 return ret; 5213 } 5214 5215 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5216 int fd, int cmd, abi_long arg) 5217 { 5218 int sig = target_to_host_signal(arg); 5219 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5220 } 5221 5222 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5223 int fd, int cmd, abi_long arg) 5224 { 5225 struct timeval tv; 5226 abi_long ret; 5227 5228 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5229 if (is_error(ret)) { 5230 return ret; 5231 } 5232 5233 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5234 if (copy_to_user_timeval(arg, &tv)) { 5235 return -TARGET_EFAULT; 5236 } 5237 } else { 5238 if (copy_to_user_timeval64(arg, &tv)) { 5239 return -TARGET_EFAULT; 5240 } 5241 } 5242 5243 return ret; 5244 } 5245 5246 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5247 int fd, int cmd, abi_long arg) 5248 { 5249 struct timespec ts; 5250 abi_long ret; 5251 5252 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5253 if (is_error(ret)) { 5254 return ret; 5255 } 5256 5257 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5258 if (host_to_target_timespec(arg, &ts)) { 5259 return -TARGET_EFAULT; 5260 } 5261 } else{ 5262 if (host_to_target_timespec64(arg, &ts)) { 5263 return -TARGET_EFAULT; 5264 } 5265 } 5266 5267 return ret; 5268 } 5269 5270 #ifdef TIOCGPTPEER 5271 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5272 int fd, int cmd, abi_long arg) 5273 { 5274 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5275 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5276 } 5277 #endif 5278 5279 static IOCTLEntry ioctl_entries[] = { 5280 #define IOCTL(cmd, access, ...) \ 5281 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5282 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5283 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5284 #define IOCTL_IGNORE(cmd) \ 5285 { TARGET_ ## cmd, 0, #cmd }, 5286 #include "ioctls.h" 5287 { 0, 0, }, 5288 }; 5289 5290 /* ??? Implement proper locking for ioctls. */ 5291 /* do_ioctl() Must return target values and target errnos. */ 5292 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5293 { 5294 const IOCTLEntry *ie; 5295 const argtype *arg_type; 5296 abi_long ret; 5297 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5298 int target_size; 5299 void *argptr; 5300 5301 ie = ioctl_entries; 5302 for(;;) { 5303 if (ie->target_cmd == 0) { 5304 qemu_log_mask( 5305 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5306 return -TARGET_ENOSYS; 5307 } 5308 if (ie->target_cmd == cmd) 5309 break; 5310 ie++; 5311 } 5312 arg_type = ie->arg_type; 5313 if (ie->do_ioctl) { 5314 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5315 } else if (!ie->host_cmd) { 5316 /* Some architectures define BSD ioctls in their headers 5317 that are not implemented in Linux. */ 5318 return -TARGET_ENOSYS; 5319 } 5320 5321 switch(arg_type[0]) { 5322 case TYPE_NULL: 5323 /* no argument */ 5324 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5325 break; 5326 case TYPE_PTRVOID: 5327 case TYPE_INT: 5328 case TYPE_LONG: 5329 case TYPE_ULONG: 5330 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5331 break; 5332 case TYPE_PTR: 5333 arg_type++; 5334 target_size = thunk_type_size(arg_type, 0); 5335 switch(ie->access) { 5336 case IOC_R: 5337 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5338 if (!is_error(ret)) { 5339 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5340 if (!argptr) 5341 return -TARGET_EFAULT; 5342 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5343 unlock_user(argptr, arg, target_size); 5344 } 5345 break; 5346 case IOC_W: 5347 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5348 if (!argptr) 5349 return -TARGET_EFAULT; 5350 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5351 unlock_user(argptr, arg, 0); 5352 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5353 break; 5354 default: 5355 case IOC_RW: 5356 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5357 if (!argptr) 5358 return -TARGET_EFAULT; 5359 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5360 unlock_user(argptr, arg, 0); 5361 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5362 if (!is_error(ret)) { 5363 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5364 if (!argptr) 5365 return -TARGET_EFAULT; 5366 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5367 unlock_user(argptr, arg, target_size); 5368 } 5369 break; 5370 } 5371 break; 5372 default: 5373 qemu_log_mask(LOG_UNIMP, 5374 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5375 (long)cmd, arg_type[0]); 5376 ret = -TARGET_ENOSYS; 5377 break; 5378 } 5379 return ret; 5380 } 5381 5382 static const bitmask_transtbl iflag_tbl[] = { 5383 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5384 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5385 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5386 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5387 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5388 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5389 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5390 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5391 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5392 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5393 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5394 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5395 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5396 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5397 { 0, 0, 0, 0 } 5398 }; 5399 5400 static const bitmask_transtbl oflag_tbl[] = { 5401 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5402 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5403 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5404 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5405 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5406 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5407 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5408 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5409 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5410 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5411 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5412 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5413 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5414 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5415 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5416 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5417 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5418 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5419 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5420 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5421 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5422 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5423 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5424 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5425 { 0, 0, 0, 0 } 5426 }; 5427 5428 static const bitmask_transtbl cflag_tbl[] = { 5429 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5430 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5431 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5432 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5433 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5434 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5435 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5436 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5437 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5438 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5439 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5440 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5441 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5442 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5443 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5444 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5445 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5446 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5447 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5448 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5449 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5450 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5451 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5452 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5453 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5454 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5455 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5456 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5457 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5458 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5459 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5460 { 0, 0, 0, 0 } 5461 }; 5462 5463 static const bitmask_transtbl lflag_tbl[] = { 5464 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5465 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5466 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5467 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5468 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5469 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5470 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5471 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5472 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5473 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5474 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5475 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5476 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5477 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5478 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5479 { 0, 0, 0, 0 } 5480 }; 5481 5482 static void target_to_host_termios (void *dst, const void *src) 5483 { 5484 struct host_termios *host = dst; 5485 const struct target_termios *target = src; 5486 5487 host->c_iflag = 5488 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5489 host->c_oflag = 5490 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5491 host->c_cflag = 5492 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5493 host->c_lflag = 5494 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 5495 host->c_line = target->c_line; 5496 5497 memset(host->c_cc, 0, sizeof(host->c_cc)); 5498 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 5499 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 5500 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 5501 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 5502 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 5503 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 5504 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 5505 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 5506 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 5507 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 5508 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 5509 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 5510 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 5511 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 5512 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 5513 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 5514 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 5515 } 5516 5517 static void host_to_target_termios (void *dst, const void *src) 5518 { 5519 struct target_termios *target = dst; 5520 const struct host_termios *host = src; 5521 5522 target->c_iflag = 5523 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 5524 target->c_oflag = 5525 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 5526 target->c_cflag = 5527 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 5528 target->c_lflag = 5529 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 5530 target->c_line = host->c_line; 5531 5532 memset(target->c_cc, 0, sizeof(target->c_cc)); 5533 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 5534 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 5535 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 5536 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 5537 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 5538 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 5539 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 5540 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 5541 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 5542 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 5543 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 5544 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 5545 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 5546 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 5547 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 5548 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 5549 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 5550 } 5551 5552 static const StructEntry struct_termios_def = { 5553 .convert = { host_to_target_termios, target_to_host_termios }, 5554 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 5555 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 5556 }; 5557 5558 static bitmask_transtbl mmap_flags_tbl[] = { 5559 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 5560 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 5561 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 5562 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 5563 MAP_ANONYMOUS, MAP_ANONYMOUS }, 5564 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 5565 MAP_GROWSDOWN, MAP_GROWSDOWN }, 5566 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 5567 MAP_DENYWRITE, MAP_DENYWRITE }, 5568 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 5569 MAP_EXECUTABLE, MAP_EXECUTABLE }, 5570 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 5571 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 5572 MAP_NORESERVE, MAP_NORESERVE }, 5573 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 5574 /* MAP_STACK had been ignored by the kernel for quite some time. 5575 Recognize it for the target insofar as we do not want to pass 5576 it through to the host. */ 5577 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 5578 { 0, 0, 0, 0 } 5579 }; 5580 5581 /* 5582 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 5583 * TARGET_I386 is defined if TARGET_X86_64 is defined 5584 */ 5585 #if defined(TARGET_I386) 5586 5587 /* NOTE: there is really one LDT for all the threads */ 5588 static uint8_t *ldt_table; 5589 5590 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 5591 { 5592 int size; 5593 void *p; 5594 5595 if (!ldt_table) 5596 return 0; 5597 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 5598 if (size > bytecount) 5599 size = bytecount; 5600 p = lock_user(VERIFY_WRITE, ptr, size, 0); 5601 if (!p) 5602 return -TARGET_EFAULT; 5603 /* ??? Should this by byteswapped? */ 5604 memcpy(p, ldt_table, size); 5605 unlock_user(p, ptr, size); 5606 return size; 5607 } 5608 5609 /* XXX: add locking support */ 5610 static abi_long write_ldt(CPUX86State *env, 5611 abi_ulong ptr, unsigned long bytecount, int oldmode) 5612 { 5613 struct target_modify_ldt_ldt_s ldt_info; 5614 struct target_modify_ldt_ldt_s *target_ldt_info; 5615 int seg_32bit, contents, read_exec_only, limit_in_pages; 5616 int seg_not_present, useable, lm; 5617 uint32_t *lp, entry_1, entry_2; 5618 5619 if (bytecount != sizeof(ldt_info)) 5620 return -TARGET_EINVAL; 5621 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 5622 return -TARGET_EFAULT; 5623 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 5624 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 5625 ldt_info.limit = tswap32(target_ldt_info->limit); 5626 ldt_info.flags = tswap32(target_ldt_info->flags); 5627 unlock_user_struct(target_ldt_info, ptr, 0); 5628 5629 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 5630 return -TARGET_EINVAL; 5631 seg_32bit = ldt_info.flags & 1; 5632 contents = (ldt_info.flags >> 1) & 3; 5633 read_exec_only = (ldt_info.flags >> 3) & 1; 5634 limit_in_pages = (ldt_info.flags >> 4) & 1; 5635 seg_not_present = (ldt_info.flags >> 5) & 1; 5636 useable = (ldt_info.flags >> 6) & 1; 5637 #ifdef TARGET_ABI32 5638 lm = 0; 5639 #else 5640 lm = (ldt_info.flags >> 7) & 1; 5641 #endif 5642 if (contents == 3) { 5643 if (oldmode) 5644 return -TARGET_EINVAL; 5645 if (seg_not_present == 0) 5646 return -TARGET_EINVAL; 5647 } 5648 /* allocate the LDT */ 5649 if (!ldt_table) { 5650 env->ldt.base = target_mmap(0, 5651 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 5652 PROT_READ|PROT_WRITE, 5653 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 5654 if (env->ldt.base == -1) 5655 return -TARGET_ENOMEM; 5656 memset(g2h(env->ldt.base), 0, 5657 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 5658 env->ldt.limit = 0xffff; 5659 ldt_table = g2h(env->ldt.base); 5660 } 5661 5662 /* NOTE: same code as Linux kernel */ 5663 /* Allow LDTs to be cleared by the user. */ 5664 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 5665 if (oldmode || 5666 (contents == 0 && 5667 read_exec_only == 1 && 5668 seg_32bit == 0 && 5669 limit_in_pages == 0 && 5670 seg_not_present == 1 && 5671 useable == 0 )) { 5672 entry_1 = 0; 5673 entry_2 = 0; 5674 goto install; 5675 } 5676 } 5677 5678 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 5679 (ldt_info.limit & 0x0ffff); 5680 entry_2 = (ldt_info.base_addr & 0xff000000) | 5681 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 5682 (ldt_info.limit & 0xf0000) | 5683 ((read_exec_only ^ 1) << 9) | 5684 (contents << 10) | 5685 ((seg_not_present ^ 1) << 15) | 5686 (seg_32bit << 22) | 5687 (limit_in_pages << 23) | 5688 (lm << 21) | 5689 0x7000; 5690 if (!oldmode) 5691 entry_2 |= (useable << 20); 5692 5693 /* Install the new entry ... */ 5694 install: 5695 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 5696 lp[0] = tswap32(entry_1); 5697 lp[1] = tswap32(entry_2); 5698 return 0; 5699 } 5700 5701 /* specific and weird i386 syscalls */ 5702 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 5703 unsigned long bytecount) 5704 { 5705 abi_long ret; 5706 5707 switch (func) { 5708 case 0: 5709 ret = read_ldt(ptr, bytecount); 5710 break; 5711 case 1: 5712 ret = write_ldt(env, ptr, bytecount, 1); 5713 break; 5714 case 0x11: 5715 ret = write_ldt(env, ptr, bytecount, 0); 5716 break; 5717 default: 5718 ret = -TARGET_ENOSYS; 5719 break; 5720 } 5721 return ret; 5722 } 5723 5724 #if defined(TARGET_ABI32) 5725 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 5726 { 5727 uint64_t *gdt_table = g2h(env->gdt.base); 5728 struct target_modify_ldt_ldt_s ldt_info; 5729 struct target_modify_ldt_ldt_s *target_ldt_info; 5730 int seg_32bit, contents, read_exec_only, limit_in_pages; 5731 int seg_not_present, useable, lm; 5732 uint32_t *lp, entry_1, entry_2; 5733 int i; 5734 5735 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 5736 if (!target_ldt_info) 5737 return -TARGET_EFAULT; 5738 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 5739 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 5740 ldt_info.limit = tswap32(target_ldt_info->limit); 5741 ldt_info.flags = tswap32(target_ldt_info->flags); 5742 if (ldt_info.entry_number == -1) { 5743 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 5744 if (gdt_table[i] == 0) { 5745 ldt_info.entry_number = i; 5746 target_ldt_info->entry_number = tswap32(i); 5747 break; 5748 } 5749 } 5750 } 5751 unlock_user_struct(target_ldt_info, ptr, 1); 5752 5753 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 5754 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 5755 return -TARGET_EINVAL; 5756 seg_32bit = ldt_info.flags & 1; 5757 contents = (ldt_info.flags >> 1) & 3; 5758 read_exec_only = (ldt_info.flags >> 3) & 1; 5759 limit_in_pages = (ldt_info.flags >> 4) & 1; 5760 seg_not_present = (ldt_info.flags >> 5) & 1; 5761 useable = (ldt_info.flags >> 6) & 1; 5762 #ifdef TARGET_ABI32 5763 lm = 0; 5764 #else 5765 lm = (ldt_info.flags >> 7) & 1; 5766 #endif 5767 5768 if (contents == 3) { 5769 if (seg_not_present == 0) 5770 return -TARGET_EINVAL; 5771 } 5772 5773 /* NOTE: same code as Linux kernel */ 5774 /* Allow LDTs to be cleared by the user. */ 5775 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 5776 if ((contents == 0 && 5777 read_exec_only == 1 && 5778 seg_32bit == 0 && 5779 limit_in_pages == 0 && 5780 seg_not_present == 1 && 5781 useable == 0 )) { 5782 entry_1 = 0; 5783 entry_2 = 0; 5784 goto install; 5785 } 5786 } 5787 5788 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 5789 (ldt_info.limit & 0x0ffff); 5790 entry_2 = (ldt_info.base_addr & 0xff000000) | 5791 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 5792 (ldt_info.limit & 0xf0000) | 5793 ((read_exec_only ^ 1) << 9) | 5794 (contents << 10) | 5795 ((seg_not_present ^ 1) << 15) | 5796 (seg_32bit << 22) | 5797 (limit_in_pages << 23) | 5798 (useable << 20) | 5799 (lm << 21) | 5800 0x7000; 5801 5802 /* Install the new entry ... */ 5803 install: 5804 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 5805 lp[0] = tswap32(entry_1); 5806 lp[1] = tswap32(entry_2); 5807 return 0; 5808 } 5809 5810 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 5811 { 5812 struct target_modify_ldt_ldt_s *target_ldt_info; 5813 uint64_t *gdt_table = g2h(env->gdt.base); 5814 uint32_t base_addr, limit, flags; 5815 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 5816 int seg_not_present, useable, lm; 5817 uint32_t *lp, entry_1, entry_2; 5818 5819 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 5820 if (!target_ldt_info) 5821 return -TARGET_EFAULT; 5822 idx = tswap32(target_ldt_info->entry_number); 5823 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 5824 idx > TARGET_GDT_ENTRY_TLS_MAX) { 5825 unlock_user_struct(target_ldt_info, ptr, 1); 5826 return -TARGET_EINVAL; 5827 } 5828 lp = (uint32_t *)(gdt_table + idx); 5829 entry_1 = tswap32(lp[0]); 5830 entry_2 = tswap32(lp[1]); 5831 5832 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 5833 contents = (entry_2 >> 10) & 3; 5834 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 5835 seg_32bit = (entry_2 >> 22) & 1; 5836 limit_in_pages = (entry_2 >> 23) & 1; 5837 useable = (entry_2 >> 20) & 1; 5838 #ifdef TARGET_ABI32 5839 lm = 0; 5840 #else 5841 lm = (entry_2 >> 21) & 1; 5842 #endif 5843 flags = (seg_32bit << 0) | (contents << 1) | 5844 (read_exec_only << 3) | (limit_in_pages << 4) | 5845 (seg_not_present << 5) | (useable << 6) | (lm << 7); 5846 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 5847 base_addr = (entry_1 >> 16) | 5848 (entry_2 & 0xff000000) | 5849 ((entry_2 & 0xff) << 16); 5850 target_ldt_info->base_addr = tswapal(base_addr); 5851 target_ldt_info->limit = tswap32(limit); 5852 target_ldt_info->flags = tswap32(flags); 5853 unlock_user_struct(target_ldt_info, ptr, 1); 5854 return 0; 5855 } 5856 5857 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 5858 { 5859 return -ENOSYS; 5860 } 5861 #else 5862 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 5863 { 5864 abi_long ret = 0; 5865 abi_ulong val; 5866 int idx; 5867 5868 switch(code) { 5869 case TARGET_ARCH_SET_GS: 5870 case TARGET_ARCH_SET_FS: 5871 if (code == TARGET_ARCH_SET_GS) 5872 idx = R_GS; 5873 else 5874 idx = R_FS; 5875 cpu_x86_load_seg(env, idx, 0); 5876 env->segs[idx].base = addr; 5877 break; 5878 case TARGET_ARCH_GET_GS: 5879 case TARGET_ARCH_GET_FS: 5880 if (code == TARGET_ARCH_GET_GS) 5881 idx = R_GS; 5882 else 5883 idx = R_FS; 5884 val = env->segs[idx].base; 5885 if (put_user(val, addr, abi_ulong)) 5886 ret = -TARGET_EFAULT; 5887 break; 5888 default: 5889 ret = -TARGET_EINVAL; 5890 break; 5891 } 5892 return ret; 5893 } 5894 #endif /* defined(TARGET_ABI32 */ 5895 5896 #endif /* defined(TARGET_I386) */ 5897 5898 #define NEW_STACK_SIZE 0x40000 5899 5900 5901 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 5902 typedef struct { 5903 CPUArchState *env; 5904 pthread_mutex_t mutex; 5905 pthread_cond_t cond; 5906 pthread_t thread; 5907 uint32_t tid; 5908 abi_ulong child_tidptr; 5909 abi_ulong parent_tidptr; 5910 sigset_t sigmask; 5911 } new_thread_info; 5912 5913 static void *clone_func(void *arg) 5914 { 5915 new_thread_info *info = arg; 5916 CPUArchState *env; 5917 CPUState *cpu; 5918 TaskState *ts; 5919 5920 rcu_register_thread(); 5921 tcg_register_thread(); 5922 env = info->env; 5923 cpu = env_cpu(env); 5924 thread_cpu = cpu; 5925 ts = (TaskState *)cpu->opaque; 5926 info->tid = sys_gettid(); 5927 task_settid(ts); 5928 if (info->child_tidptr) 5929 put_user_u32(info->tid, info->child_tidptr); 5930 if (info->parent_tidptr) 5931 put_user_u32(info->tid, info->parent_tidptr); 5932 qemu_guest_random_seed_thread_part2(cpu->random_seed); 5933 /* Enable signals. */ 5934 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 5935 /* Signal to the parent that we're ready. */ 5936 pthread_mutex_lock(&info->mutex); 5937 pthread_cond_broadcast(&info->cond); 5938 pthread_mutex_unlock(&info->mutex); 5939 /* Wait until the parent has finished initializing the tls state. */ 5940 pthread_mutex_lock(&clone_lock); 5941 pthread_mutex_unlock(&clone_lock); 5942 cpu_loop(env); 5943 /* never exits */ 5944 return NULL; 5945 } 5946 5947 /* do_fork() Must return host values and target errnos (unlike most 5948 do_*() functions). */ 5949 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 5950 abi_ulong parent_tidptr, target_ulong newtls, 5951 abi_ulong child_tidptr) 5952 { 5953 CPUState *cpu = env_cpu(env); 5954 int ret; 5955 TaskState *ts; 5956 CPUState *new_cpu; 5957 CPUArchState *new_env; 5958 sigset_t sigmask; 5959 5960 flags &= ~CLONE_IGNORED_FLAGS; 5961 5962 /* Emulate vfork() with fork() */ 5963 if (flags & CLONE_VFORK) 5964 flags &= ~(CLONE_VFORK | CLONE_VM); 5965 5966 if (flags & CLONE_VM) { 5967 TaskState *parent_ts = (TaskState *)cpu->opaque; 5968 new_thread_info info; 5969 pthread_attr_t attr; 5970 5971 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 5972 (flags & CLONE_INVALID_THREAD_FLAGS)) { 5973 return -TARGET_EINVAL; 5974 } 5975 5976 ts = g_new0(TaskState, 1); 5977 init_task_state(ts); 5978 5979 /* Grab a mutex so that thread setup appears atomic. */ 5980 pthread_mutex_lock(&clone_lock); 5981 5982 /* we create a new CPU instance. */ 5983 new_env = cpu_copy(env); 5984 /* Init regs that differ from the parent. */ 5985 cpu_clone_regs_child(new_env, newsp, flags); 5986 cpu_clone_regs_parent(env, flags); 5987 new_cpu = env_cpu(new_env); 5988 new_cpu->opaque = ts; 5989 ts->bprm = parent_ts->bprm; 5990 ts->info = parent_ts->info; 5991 ts->signal_mask = parent_ts->signal_mask; 5992 5993 if (flags & CLONE_CHILD_CLEARTID) { 5994 ts->child_tidptr = child_tidptr; 5995 } 5996 5997 if (flags & CLONE_SETTLS) { 5998 cpu_set_tls (new_env, newtls); 5999 } 6000 6001 memset(&info, 0, sizeof(info)); 6002 pthread_mutex_init(&info.mutex, NULL); 6003 pthread_mutex_lock(&info.mutex); 6004 pthread_cond_init(&info.cond, NULL); 6005 info.env = new_env; 6006 if (flags & CLONE_CHILD_SETTID) { 6007 info.child_tidptr = child_tidptr; 6008 } 6009 if (flags & CLONE_PARENT_SETTID) { 6010 info.parent_tidptr = parent_tidptr; 6011 } 6012 6013 ret = pthread_attr_init(&attr); 6014 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6015 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6016 /* It is not safe to deliver signals until the child has finished 6017 initializing, so temporarily block all signals. */ 6018 sigfillset(&sigmask); 6019 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6020 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6021 6022 /* If this is our first additional thread, we need to ensure we 6023 * generate code for parallel execution and flush old translations. 6024 */ 6025 if (!parallel_cpus) { 6026 parallel_cpus = true; 6027 tb_flush(cpu); 6028 } 6029 6030 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6031 /* TODO: Free new CPU state if thread creation failed. */ 6032 6033 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6034 pthread_attr_destroy(&attr); 6035 if (ret == 0) { 6036 /* Wait for the child to initialize. */ 6037 pthread_cond_wait(&info.cond, &info.mutex); 6038 ret = info.tid; 6039 } else { 6040 ret = -1; 6041 } 6042 pthread_mutex_unlock(&info.mutex); 6043 pthread_cond_destroy(&info.cond); 6044 pthread_mutex_destroy(&info.mutex); 6045 pthread_mutex_unlock(&clone_lock); 6046 } else { 6047 /* if no CLONE_VM, we consider it is a fork */ 6048 if (flags & CLONE_INVALID_FORK_FLAGS) { 6049 return -TARGET_EINVAL; 6050 } 6051 6052 /* We can't support custom termination signals */ 6053 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6054 return -TARGET_EINVAL; 6055 } 6056 6057 if (block_signals()) { 6058 return -TARGET_ERESTARTSYS; 6059 } 6060 6061 fork_start(); 6062 ret = fork(); 6063 if (ret == 0) { 6064 /* Child Process. */ 6065 cpu_clone_regs_child(env, newsp, flags); 6066 fork_end(1); 6067 /* There is a race condition here. The parent process could 6068 theoretically read the TID in the child process before the child 6069 tid is set. This would require using either ptrace 6070 (not implemented) or having *_tidptr to point at a shared memory 6071 mapping. We can't repeat the spinlock hack used above because 6072 the child process gets its own copy of the lock. */ 6073 if (flags & CLONE_CHILD_SETTID) 6074 put_user_u32(sys_gettid(), child_tidptr); 6075 if (flags & CLONE_PARENT_SETTID) 6076 put_user_u32(sys_gettid(), parent_tidptr); 6077 ts = (TaskState *)cpu->opaque; 6078 if (flags & CLONE_SETTLS) 6079 cpu_set_tls (env, newtls); 6080 if (flags & CLONE_CHILD_CLEARTID) 6081 ts->child_tidptr = child_tidptr; 6082 } else { 6083 cpu_clone_regs_parent(env, flags); 6084 fork_end(0); 6085 } 6086 } 6087 return ret; 6088 } 6089 6090 /* warning : doesn't handle linux specific flags... */ 6091 static int target_to_host_fcntl_cmd(int cmd) 6092 { 6093 int ret; 6094 6095 switch(cmd) { 6096 case TARGET_F_DUPFD: 6097 case TARGET_F_GETFD: 6098 case TARGET_F_SETFD: 6099 case TARGET_F_GETFL: 6100 case TARGET_F_SETFL: 6101 ret = cmd; 6102 break; 6103 case TARGET_F_GETLK: 6104 ret = F_GETLK64; 6105 break; 6106 case TARGET_F_SETLK: 6107 ret = F_SETLK64; 6108 break; 6109 case TARGET_F_SETLKW: 6110 ret = F_SETLKW64; 6111 break; 6112 case TARGET_F_GETOWN: 6113 ret = F_GETOWN; 6114 break; 6115 case TARGET_F_SETOWN: 6116 ret = F_SETOWN; 6117 break; 6118 case TARGET_F_GETSIG: 6119 ret = F_GETSIG; 6120 break; 6121 case TARGET_F_SETSIG: 6122 ret = F_SETSIG; 6123 break; 6124 #if TARGET_ABI_BITS == 32 6125 case TARGET_F_GETLK64: 6126 ret = F_GETLK64; 6127 break; 6128 case TARGET_F_SETLK64: 6129 ret = F_SETLK64; 6130 break; 6131 case TARGET_F_SETLKW64: 6132 ret = F_SETLKW64; 6133 break; 6134 #endif 6135 case TARGET_F_SETLEASE: 6136 ret = F_SETLEASE; 6137 break; 6138 case TARGET_F_GETLEASE: 6139 ret = F_GETLEASE; 6140 break; 6141 #ifdef F_DUPFD_CLOEXEC 6142 case TARGET_F_DUPFD_CLOEXEC: 6143 ret = F_DUPFD_CLOEXEC; 6144 break; 6145 #endif 6146 case TARGET_F_NOTIFY: 6147 ret = F_NOTIFY; 6148 break; 6149 #ifdef F_GETOWN_EX 6150 case TARGET_F_GETOWN_EX: 6151 ret = F_GETOWN_EX; 6152 break; 6153 #endif 6154 #ifdef F_SETOWN_EX 6155 case TARGET_F_SETOWN_EX: 6156 ret = F_SETOWN_EX; 6157 break; 6158 #endif 6159 #ifdef F_SETPIPE_SZ 6160 case TARGET_F_SETPIPE_SZ: 6161 ret = F_SETPIPE_SZ; 6162 break; 6163 case TARGET_F_GETPIPE_SZ: 6164 ret = F_GETPIPE_SZ; 6165 break; 6166 #endif 6167 default: 6168 ret = -TARGET_EINVAL; 6169 break; 6170 } 6171 6172 #if defined(__powerpc64__) 6173 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6174 * is not supported by kernel. The glibc fcntl call actually adjusts 6175 * them to 5, 6 and 7 before making the syscall(). Since we make the 6176 * syscall directly, adjust to what is supported by the kernel. 6177 */ 6178 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6179 ret -= F_GETLK64 - 5; 6180 } 6181 #endif 6182 6183 return ret; 6184 } 6185 6186 #define FLOCK_TRANSTBL \ 6187 switch (type) { \ 6188 TRANSTBL_CONVERT(F_RDLCK); \ 6189 TRANSTBL_CONVERT(F_WRLCK); \ 6190 TRANSTBL_CONVERT(F_UNLCK); \ 6191 TRANSTBL_CONVERT(F_EXLCK); \ 6192 TRANSTBL_CONVERT(F_SHLCK); \ 6193 } 6194 6195 static int target_to_host_flock(int type) 6196 { 6197 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6198 FLOCK_TRANSTBL 6199 #undef TRANSTBL_CONVERT 6200 return -TARGET_EINVAL; 6201 } 6202 6203 static int host_to_target_flock(int type) 6204 { 6205 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6206 FLOCK_TRANSTBL 6207 #undef TRANSTBL_CONVERT 6208 /* if we don't know how to convert the value coming 6209 * from the host we copy to the target field as-is 6210 */ 6211 return type; 6212 } 6213 6214 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6215 abi_ulong target_flock_addr) 6216 { 6217 struct target_flock *target_fl; 6218 int l_type; 6219 6220 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6221 return -TARGET_EFAULT; 6222 } 6223 6224 __get_user(l_type, &target_fl->l_type); 6225 l_type = target_to_host_flock(l_type); 6226 if (l_type < 0) { 6227 return l_type; 6228 } 6229 fl->l_type = l_type; 6230 __get_user(fl->l_whence, &target_fl->l_whence); 6231 __get_user(fl->l_start, &target_fl->l_start); 6232 __get_user(fl->l_len, &target_fl->l_len); 6233 __get_user(fl->l_pid, &target_fl->l_pid); 6234 unlock_user_struct(target_fl, target_flock_addr, 0); 6235 return 0; 6236 } 6237 6238 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6239 const struct flock64 *fl) 6240 { 6241 struct target_flock *target_fl; 6242 short l_type; 6243 6244 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6245 return -TARGET_EFAULT; 6246 } 6247 6248 l_type = host_to_target_flock(fl->l_type); 6249 __put_user(l_type, &target_fl->l_type); 6250 __put_user(fl->l_whence, &target_fl->l_whence); 6251 __put_user(fl->l_start, &target_fl->l_start); 6252 __put_user(fl->l_len, &target_fl->l_len); 6253 __put_user(fl->l_pid, &target_fl->l_pid); 6254 unlock_user_struct(target_fl, target_flock_addr, 1); 6255 return 0; 6256 } 6257 6258 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6259 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6260 6261 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6262 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 6263 abi_ulong target_flock_addr) 6264 { 6265 struct target_oabi_flock64 *target_fl; 6266 int l_type; 6267 6268 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6269 return -TARGET_EFAULT; 6270 } 6271 6272 __get_user(l_type, &target_fl->l_type); 6273 l_type = target_to_host_flock(l_type); 6274 if (l_type < 0) { 6275 return l_type; 6276 } 6277 fl->l_type = l_type; 6278 __get_user(fl->l_whence, &target_fl->l_whence); 6279 __get_user(fl->l_start, &target_fl->l_start); 6280 __get_user(fl->l_len, &target_fl->l_len); 6281 __get_user(fl->l_pid, &target_fl->l_pid); 6282 unlock_user_struct(target_fl, target_flock_addr, 0); 6283 return 0; 6284 } 6285 6286 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 6287 const struct flock64 *fl) 6288 { 6289 struct target_oabi_flock64 *target_fl; 6290 short l_type; 6291 6292 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6293 return -TARGET_EFAULT; 6294 } 6295 6296 l_type = host_to_target_flock(fl->l_type); 6297 __put_user(l_type, &target_fl->l_type); 6298 __put_user(fl->l_whence, &target_fl->l_whence); 6299 __put_user(fl->l_start, &target_fl->l_start); 6300 __put_user(fl->l_len, &target_fl->l_len); 6301 __put_user(fl->l_pid, &target_fl->l_pid); 6302 unlock_user_struct(target_fl, target_flock_addr, 1); 6303 return 0; 6304 } 6305 #endif 6306 6307 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6308 abi_ulong target_flock_addr) 6309 { 6310 struct target_flock64 *target_fl; 6311 int l_type; 6312 6313 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6314 return -TARGET_EFAULT; 6315 } 6316 6317 __get_user(l_type, &target_fl->l_type); 6318 l_type = target_to_host_flock(l_type); 6319 if (l_type < 0) { 6320 return l_type; 6321 } 6322 fl->l_type = l_type; 6323 __get_user(fl->l_whence, &target_fl->l_whence); 6324 __get_user(fl->l_start, &target_fl->l_start); 6325 __get_user(fl->l_len, &target_fl->l_len); 6326 __get_user(fl->l_pid, &target_fl->l_pid); 6327 unlock_user_struct(target_fl, target_flock_addr, 0); 6328 return 0; 6329 } 6330 6331 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 6332 const struct flock64 *fl) 6333 { 6334 struct target_flock64 *target_fl; 6335 short l_type; 6336 6337 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6338 return -TARGET_EFAULT; 6339 } 6340 6341 l_type = host_to_target_flock(fl->l_type); 6342 __put_user(l_type, &target_fl->l_type); 6343 __put_user(fl->l_whence, &target_fl->l_whence); 6344 __put_user(fl->l_start, &target_fl->l_start); 6345 __put_user(fl->l_len, &target_fl->l_len); 6346 __put_user(fl->l_pid, &target_fl->l_pid); 6347 unlock_user_struct(target_fl, target_flock_addr, 1); 6348 return 0; 6349 } 6350 6351 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 6352 { 6353 struct flock64 fl64; 6354 #ifdef F_GETOWN_EX 6355 struct f_owner_ex fox; 6356 struct target_f_owner_ex *target_fox; 6357 #endif 6358 abi_long ret; 6359 int host_cmd = target_to_host_fcntl_cmd(cmd); 6360 6361 if (host_cmd == -TARGET_EINVAL) 6362 return host_cmd; 6363 6364 switch(cmd) { 6365 case TARGET_F_GETLK: 6366 ret = copy_from_user_flock(&fl64, arg); 6367 if (ret) { 6368 return ret; 6369 } 6370 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6371 if (ret == 0) { 6372 ret = copy_to_user_flock(arg, &fl64); 6373 } 6374 break; 6375 6376 case TARGET_F_SETLK: 6377 case TARGET_F_SETLKW: 6378 ret = copy_from_user_flock(&fl64, arg); 6379 if (ret) { 6380 return ret; 6381 } 6382 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6383 break; 6384 6385 case TARGET_F_GETLK64: 6386 ret = copy_from_user_flock64(&fl64, arg); 6387 if (ret) { 6388 return ret; 6389 } 6390 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6391 if (ret == 0) { 6392 ret = copy_to_user_flock64(arg, &fl64); 6393 } 6394 break; 6395 case TARGET_F_SETLK64: 6396 case TARGET_F_SETLKW64: 6397 ret = copy_from_user_flock64(&fl64, arg); 6398 if (ret) { 6399 return ret; 6400 } 6401 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6402 break; 6403 6404 case TARGET_F_GETFL: 6405 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6406 if (ret >= 0) { 6407 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 6408 } 6409 break; 6410 6411 case TARGET_F_SETFL: 6412 ret = get_errno(safe_fcntl(fd, host_cmd, 6413 target_to_host_bitmask(arg, 6414 fcntl_flags_tbl))); 6415 break; 6416 6417 #ifdef F_GETOWN_EX 6418 case TARGET_F_GETOWN_EX: 6419 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6420 if (ret >= 0) { 6421 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 6422 return -TARGET_EFAULT; 6423 target_fox->type = tswap32(fox.type); 6424 target_fox->pid = tswap32(fox.pid); 6425 unlock_user_struct(target_fox, arg, 1); 6426 } 6427 break; 6428 #endif 6429 6430 #ifdef F_SETOWN_EX 6431 case TARGET_F_SETOWN_EX: 6432 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 6433 return -TARGET_EFAULT; 6434 fox.type = tswap32(target_fox->type); 6435 fox.pid = tswap32(target_fox->pid); 6436 unlock_user_struct(target_fox, arg, 0); 6437 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6438 break; 6439 #endif 6440 6441 case TARGET_F_SETOWN: 6442 case TARGET_F_GETOWN: 6443 case TARGET_F_SETSIG: 6444 case TARGET_F_GETSIG: 6445 case TARGET_F_SETLEASE: 6446 case TARGET_F_GETLEASE: 6447 case TARGET_F_SETPIPE_SZ: 6448 case TARGET_F_GETPIPE_SZ: 6449 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6450 break; 6451 6452 default: 6453 ret = get_errno(safe_fcntl(fd, cmd, arg)); 6454 break; 6455 } 6456 return ret; 6457 } 6458 6459 #ifdef USE_UID16 6460 6461 static inline int high2lowuid(int uid) 6462 { 6463 if (uid > 65535) 6464 return 65534; 6465 else 6466 return uid; 6467 } 6468 6469 static inline int high2lowgid(int gid) 6470 { 6471 if (gid > 65535) 6472 return 65534; 6473 else 6474 return gid; 6475 } 6476 6477 static inline int low2highuid(int uid) 6478 { 6479 if ((int16_t)uid == -1) 6480 return -1; 6481 else 6482 return uid; 6483 } 6484 6485 static inline int low2highgid(int gid) 6486 { 6487 if ((int16_t)gid == -1) 6488 return -1; 6489 else 6490 return gid; 6491 } 6492 static inline int tswapid(int id) 6493 { 6494 return tswap16(id); 6495 } 6496 6497 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 6498 6499 #else /* !USE_UID16 */ 6500 static inline int high2lowuid(int uid) 6501 { 6502 return uid; 6503 } 6504 static inline int high2lowgid(int gid) 6505 { 6506 return gid; 6507 } 6508 static inline int low2highuid(int uid) 6509 { 6510 return uid; 6511 } 6512 static inline int low2highgid(int gid) 6513 { 6514 return gid; 6515 } 6516 static inline int tswapid(int id) 6517 { 6518 return tswap32(id); 6519 } 6520 6521 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 6522 6523 #endif /* USE_UID16 */ 6524 6525 /* We must do direct syscalls for setting UID/GID, because we want to 6526 * implement the Linux system call semantics of "change only for this thread", 6527 * not the libc/POSIX semantics of "change for all threads in process". 6528 * (See http://ewontfix.com/17/ for more details.) 6529 * We use the 32-bit version of the syscalls if present; if it is not 6530 * then either the host architecture supports 32-bit UIDs natively with 6531 * the standard syscall, or the 16-bit UID is the best we can do. 6532 */ 6533 #ifdef __NR_setuid32 6534 #define __NR_sys_setuid __NR_setuid32 6535 #else 6536 #define __NR_sys_setuid __NR_setuid 6537 #endif 6538 #ifdef __NR_setgid32 6539 #define __NR_sys_setgid __NR_setgid32 6540 #else 6541 #define __NR_sys_setgid __NR_setgid 6542 #endif 6543 #ifdef __NR_setresuid32 6544 #define __NR_sys_setresuid __NR_setresuid32 6545 #else 6546 #define __NR_sys_setresuid __NR_setresuid 6547 #endif 6548 #ifdef __NR_setresgid32 6549 #define __NR_sys_setresgid __NR_setresgid32 6550 #else 6551 #define __NR_sys_setresgid __NR_setresgid 6552 #endif 6553 6554 _syscall1(int, sys_setuid, uid_t, uid) 6555 _syscall1(int, sys_setgid, gid_t, gid) 6556 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 6557 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 6558 6559 void syscall_init(void) 6560 { 6561 IOCTLEntry *ie; 6562 const argtype *arg_type; 6563 int size; 6564 int i; 6565 6566 thunk_init(STRUCT_MAX); 6567 6568 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 6569 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 6570 #include "syscall_types.h" 6571 #undef STRUCT 6572 #undef STRUCT_SPECIAL 6573 6574 /* Build target_to_host_errno_table[] table from 6575 * host_to_target_errno_table[]. */ 6576 for (i = 0; i < ERRNO_TABLE_SIZE; i++) { 6577 target_to_host_errno_table[host_to_target_errno_table[i]] = i; 6578 } 6579 6580 /* we patch the ioctl size if necessary. We rely on the fact that 6581 no ioctl has all the bits at '1' in the size field */ 6582 ie = ioctl_entries; 6583 while (ie->target_cmd != 0) { 6584 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 6585 TARGET_IOC_SIZEMASK) { 6586 arg_type = ie->arg_type; 6587 if (arg_type[0] != TYPE_PTR) { 6588 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 6589 ie->target_cmd); 6590 exit(1); 6591 } 6592 arg_type++; 6593 size = thunk_type_size(arg_type, 0); 6594 ie->target_cmd = (ie->target_cmd & 6595 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 6596 (size << TARGET_IOC_SIZESHIFT); 6597 } 6598 6599 /* automatic consistency check if same arch */ 6600 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 6601 (defined(__x86_64__) && defined(TARGET_X86_64)) 6602 if (unlikely(ie->target_cmd != ie->host_cmd)) { 6603 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 6604 ie->name, ie->target_cmd, ie->host_cmd); 6605 } 6606 #endif 6607 ie++; 6608 } 6609 } 6610 6611 #if TARGET_ABI_BITS == 32 6612 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) 6613 { 6614 #ifdef TARGET_WORDS_BIGENDIAN 6615 return ((uint64_t)word0 << 32) | word1; 6616 #else 6617 return ((uint64_t)word1 << 32) | word0; 6618 #endif 6619 } 6620 #else /* TARGET_ABI_BITS == 32 */ 6621 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) 6622 { 6623 return word0; 6624 } 6625 #endif /* TARGET_ABI_BITS != 32 */ 6626 6627 #ifdef TARGET_NR_truncate64 6628 static inline abi_long target_truncate64(void *cpu_env, const char *arg1, 6629 abi_long arg2, 6630 abi_long arg3, 6631 abi_long arg4) 6632 { 6633 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 6634 arg2 = arg3; 6635 arg3 = arg4; 6636 } 6637 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 6638 } 6639 #endif 6640 6641 #ifdef TARGET_NR_ftruncate64 6642 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, 6643 abi_long arg2, 6644 abi_long arg3, 6645 abi_long arg4) 6646 { 6647 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 6648 arg2 = arg3; 6649 arg3 = arg4; 6650 } 6651 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 6652 } 6653 #endif 6654 6655 #if defined(TARGET_NR_timer_settime) || \ 6656 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 6657 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec, 6658 abi_ulong target_addr) 6659 { 6660 struct target_itimerspec *target_itspec; 6661 6662 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) { 6663 return -TARGET_EFAULT; 6664 } 6665 6666 host_itspec->it_interval.tv_sec = 6667 tswapal(target_itspec->it_interval.tv_sec); 6668 host_itspec->it_interval.tv_nsec = 6669 tswapal(target_itspec->it_interval.tv_nsec); 6670 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec); 6671 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec); 6672 6673 unlock_user_struct(target_itspec, target_addr, 1); 6674 return 0; 6675 } 6676 #endif 6677 6678 #if ((defined(TARGET_NR_timerfd_gettime) || \ 6679 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 6680 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 6681 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 6682 struct itimerspec *host_its) 6683 { 6684 struct target_itimerspec *target_itspec; 6685 6686 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) { 6687 return -TARGET_EFAULT; 6688 } 6689 6690 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec); 6691 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec); 6692 6693 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec); 6694 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec); 6695 6696 unlock_user_struct(target_itspec, target_addr, 0); 6697 return 0; 6698 } 6699 #endif 6700 6701 #if defined(TARGET_NR_adjtimex) || \ 6702 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 6703 static inline abi_long target_to_host_timex(struct timex *host_tx, 6704 abi_long target_addr) 6705 { 6706 struct target_timex *target_tx; 6707 6708 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 6709 return -TARGET_EFAULT; 6710 } 6711 6712 __get_user(host_tx->modes, &target_tx->modes); 6713 __get_user(host_tx->offset, &target_tx->offset); 6714 __get_user(host_tx->freq, &target_tx->freq); 6715 __get_user(host_tx->maxerror, &target_tx->maxerror); 6716 __get_user(host_tx->esterror, &target_tx->esterror); 6717 __get_user(host_tx->status, &target_tx->status); 6718 __get_user(host_tx->constant, &target_tx->constant); 6719 __get_user(host_tx->precision, &target_tx->precision); 6720 __get_user(host_tx->tolerance, &target_tx->tolerance); 6721 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 6722 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 6723 __get_user(host_tx->tick, &target_tx->tick); 6724 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 6725 __get_user(host_tx->jitter, &target_tx->jitter); 6726 __get_user(host_tx->shift, &target_tx->shift); 6727 __get_user(host_tx->stabil, &target_tx->stabil); 6728 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 6729 __get_user(host_tx->calcnt, &target_tx->calcnt); 6730 __get_user(host_tx->errcnt, &target_tx->errcnt); 6731 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 6732 __get_user(host_tx->tai, &target_tx->tai); 6733 6734 unlock_user_struct(target_tx, target_addr, 0); 6735 return 0; 6736 } 6737 6738 static inline abi_long host_to_target_timex(abi_long target_addr, 6739 struct timex *host_tx) 6740 { 6741 struct target_timex *target_tx; 6742 6743 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 6744 return -TARGET_EFAULT; 6745 } 6746 6747 __put_user(host_tx->modes, &target_tx->modes); 6748 __put_user(host_tx->offset, &target_tx->offset); 6749 __put_user(host_tx->freq, &target_tx->freq); 6750 __put_user(host_tx->maxerror, &target_tx->maxerror); 6751 __put_user(host_tx->esterror, &target_tx->esterror); 6752 __put_user(host_tx->status, &target_tx->status); 6753 __put_user(host_tx->constant, &target_tx->constant); 6754 __put_user(host_tx->precision, &target_tx->precision); 6755 __put_user(host_tx->tolerance, &target_tx->tolerance); 6756 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 6757 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 6758 __put_user(host_tx->tick, &target_tx->tick); 6759 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 6760 __put_user(host_tx->jitter, &target_tx->jitter); 6761 __put_user(host_tx->shift, &target_tx->shift); 6762 __put_user(host_tx->stabil, &target_tx->stabil); 6763 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 6764 __put_user(host_tx->calcnt, &target_tx->calcnt); 6765 __put_user(host_tx->errcnt, &target_tx->errcnt); 6766 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 6767 __put_user(host_tx->tai, &target_tx->tai); 6768 6769 unlock_user_struct(target_tx, target_addr, 1); 6770 return 0; 6771 } 6772 #endif 6773 6774 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 6775 abi_ulong target_addr) 6776 { 6777 struct target_sigevent *target_sevp; 6778 6779 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 6780 return -TARGET_EFAULT; 6781 } 6782 6783 /* This union is awkward on 64 bit systems because it has a 32 bit 6784 * integer and a pointer in it; we follow the conversion approach 6785 * used for handling sigval types in signal.c so the guest should get 6786 * the correct value back even if we did a 64 bit byteswap and it's 6787 * using the 32 bit integer. 6788 */ 6789 host_sevp->sigev_value.sival_ptr = 6790 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 6791 host_sevp->sigev_signo = 6792 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 6793 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 6794 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid); 6795 6796 unlock_user_struct(target_sevp, target_addr, 1); 6797 return 0; 6798 } 6799 6800 #if defined(TARGET_NR_mlockall) 6801 static inline int target_to_host_mlockall_arg(int arg) 6802 { 6803 int result = 0; 6804 6805 if (arg & TARGET_MLOCKALL_MCL_CURRENT) { 6806 result |= MCL_CURRENT; 6807 } 6808 if (arg & TARGET_MLOCKALL_MCL_FUTURE) { 6809 result |= MCL_FUTURE; 6810 } 6811 return result; 6812 } 6813 #endif 6814 6815 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 6816 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 6817 defined(TARGET_NR_newfstatat)) 6818 static inline abi_long host_to_target_stat64(void *cpu_env, 6819 abi_ulong target_addr, 6820 struct stat *host_st) 6821 { 6822 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 6823 if (((CPUARMState *)cpu_env)->eabi) { 6824 struct target_eabi_stat64 *target_st; 6825 6826 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 6827 return -TARGET_EFAULT; 6828 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 6829 __put_user(host_st->st_dev, &target_st->st_dev); 6830 __put_user(host_st->st_ino, &target_st->st_ino); 6831 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 6832 __put_user(host_st->st_ino, &target_st->__st_ino); 6833 #endif 6834 __put_user(host_st->st_mode, &target_st->st_mode); 6835 __put_user(host_st->st_nlink, &target_st->st_nlink); 6836 __put_user(host_st->st_uid, &target_st->st_uid); 6837 __put_user(host_st->st_gid, &target_st->st_gid); 6838 __put_user(host_st->st_rdev, &target_st->st_rdev); 6839 __put_user(host_st->st_size, &target_st->st_size); 6840 __put_user(host_st->st_blksize, &target_st->st_blksize); 6841 __put_user(host_st->st_blocks, &target_st->st_blocks); 6842 __put_user(host_st->st_atime, &target_st->target_st_atime); 6843 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 6844 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 6845 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700 6846 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 6847 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 6848 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 6849 #endif 6850 unlock_user_struct(target_st, target_addr, 1); 6851 } else 6852 #endif 6853 { 6854 #if defined(TARGET_HAS_STRUCT_STAT64) 6855 struct target_stat64 *target_st; 6856 #else 6857 struct target_stat *target_st; 6858 #endif 6859 6860 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 6861 return -TARGET_EFAULT; 6862 memset(target_st, 0, sizeof(*target_st)); 6863 __put_user(host_st->st_dev, &target_st->st_dev); 6864 __put_user(host_st->st_ino, &target_st->st_ino); 6865 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 6866 __put_user(host_st->st_ino, &target_st->__st_ino); 6867 #endif 6868 __put_user(host_st->st_mode, &target_st->st_mode); 6869 __put_user(host_st->st_nlink, &target_st->st_nlink); 6870 __put_user(host_st->st_uid, &target_st->st_uid); 6871 __put_user(host_st->st_gid, &target_st->st_gid); 6872 __put_user(host_st->st_rdev, &target_st->st_rdev); 6873 /* XXX: better use of kernel struct */ 6874 __put_user(host_st->st_size, &target_st->st_size); 6875 __put_user(host_st->st_blksize, &target_st->st_blksize); 6876 __put_user(host_st->st_blocks, &target_st->st_blocks); 6877 __put_user(host_st->st_atime, &target_st->target_st_atime); 6878 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 6879 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 6880 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700 6881 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 6882 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 6883 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 6884 #endif 6885 unlock_user_struct(target_st, target_addr, 1); 6886 } 6887 6888 return 0; 6889 } 6890 #endif 6891 6892 #if defined(TARGET_NR_statx) && defined(__NR_statx) 6893 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 6894 abi_ulong target_addr) 6895 { 6896 struct target_statx *target_stx; 6897 6898 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 6899 return -TARGET_EFAULT; 6900 } 6901 memset(target_stx, 0, sizeof(*target_stx)); 6902 6903 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 6904 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 6905 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 6906 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 6907 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 6908 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 6909 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 6910 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 6911 __put_user(host_stx->stx_size, &target_stx->stx_size); 6912 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 6913 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 6914 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 6915 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 6916 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 6917 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 6918 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 6919 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 6920 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 6921 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 6922 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 6923 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 6924 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 6925 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 6926 6927 unlock_user_struct(target_stx, target_addr, 1); 6928 6929 return 0; 6930 } 6931 #endif 6932 6933 static int do_sys_futex(int *uaddr, int op, int val, 6934 const struct timespec *timeout, int *uaddr2, 6935 int val3) 6936 { 6937 #if HOST_LONG_BITS == 64 6938 #if defined(__NR_futex) 6939 /* always a 64-bit time_t, it doesn't define _time64 version */ 6940 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 6941 6942 #endif 6943 #else /* HOST_LONG_BITS == 64 */ 6944 #if defined(__NR_futex_time64) 6945 if (sizeof(timeout->tv_sec) == 8) { 6946 /* _time64 function on 32bit arch */ 6947 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 6948 } 6949 #endif 6950 #if defined(__NR_futex) 6951 /* old function on 32bit arch */ 6952 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 6953 #endif 6954 #endif /* HOST_LONG_BITS == 64 */ 6955 g_assert_not_reached(); 6956 } 6957 6958 static int do_safe_futex(int *uaddr, int op, int val, 6959 const struct timespec *timeout, int *uaddr2, 6960 int val3) 6961 { 6962 #if HOST_LONG_BITS == 64 6963 #if defined(__NR_futex) 6964 /* always a 64-bit time_t, it doesn't define _time64 version */ 6965 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 6966 #endif 6967 #else /* HOST_LONG_BITS == 64 */ 6968 #if defined(__NR_futex_time64) 6969 if (sizeof(timeout->tv_sec) == 8) { 6970 /* _time64 function on 32bit arch */ 6971 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 6972 val3)); 6973 } 6974 #endif 6975 #if defined(__NR_futex) 6976 /* old function on 32bit arch */ 6977 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 6978 #endif 6979 #endif /* HOST_LONG_BITS == 64 */ 6980 return -TARGET_ENOSYS; 6981 } 6982 6983 /* ??? Using host futex calls even when target atomic operations 6984 are not really atomic probably breaks things. However implementing 6985 futexes locally would make futexes shared between multiple processes 6986 tricky. However they're probably useless because guest atomic 6987 operations won't work either. */ 6988 #if defined(TARGET_NR_futex) 6989 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout, 6990 target_ulong uaddr2, int val3) 6991 { 6992 struct timespec ts, *pts; 6993 int base_op; 6994 6995 /* ??? We assume FUTEX_* constants are the same on both host 6996 and target. */ 6997 #ifdef FUTEX_CMD_MASK 6998 base_op = op & FUTEX_CMD_MASK; 6999 #else 7000 base_op = op; 7001 #endif 7002 switch (base_op) { 7003 case FUTEX_WAIT: 7004 case FUTEX_WAIT_BITSET: 7005 if (timeout) { 7006 pts = &ts; 7007 target_to_host_timespec(pts, timeout); 7008 } else { 7009 pts = NULL; 7010 } 7011 return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3); 7012 case FUTEX_WAKE: 7013 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); 7014 case FUTEX_FD: 7015 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); 7016 case FUTEX_REQUEUE: 7017 case FUTEX_CMP_REQUEUE: 7018 case FUTEX_WAKE_OP: 7019 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7020 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7021 But the prototype takes a `struct timespec *'; insert casts 7022 to satisfy the compiler. We do not need to tswap TIMEOUT 7023 since it's not compared to guest memory. */ 7024 pts = (struct timespec *)(uintptr_t) timeout; 7025 return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2), 7026 (base_op == FUTEX_CMP_REQUEUE 7027 ? tswap32(val3) 7028 : val3)); 7029 default: 7030 return -TARGET_ENOSYS; 7031 } 7032 } 7033 #endif 7034 7035 #if defined(TARGET_NR_futex_time64) 7036 static int do_futex_time64(target_ulong uaddr, int op, int val, target_ulong timeout, 7037 target_ulong uaddr2, int val3) 7038 { 7039 struct timespec ts, *pts; 7040 int base_op; 7041 7042 /* ??? We assume FUTEX_* constants are the same on both host 7043 and target. */ 7044 #ifdef FUTEX_CMD_MASK 7045 base_op = op & FUTEX_CMD_MASK; 7046 #else 7047 base_op = op; 7048 #endif 7049 switch (base_op) { 7050 case FUTEX_WAIT: 7051 case FUTEX_WAIT_BITSET: 7052 if (timeout) { 7053 pts = &ts; 7054 target_to_host_timespec64(pts, timeout); 7055 } else { 7056 pts = NULL; 7057 } 7058 return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3); 7059 case FUTEX_WAKE: 7060 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); 7061 case FUTEX_FD: 7062 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); 7063 case FUTEX_REQUEUE: 7064 case FUTEX_CMP_REQUEUE: 7065 case FUTEX_WAKE_OP: 7066 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7067 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7068 But the prototype takes a `struct timespec *'; insert casts 7069 to satisfy the compiler. We do not need to tswap TIMEOUT 7070 since it's not compared to guest memory. */ 7071 pts = (struct timespec *)(uintptr_t) timeout; 7072 return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2), 7073 (base_op == FUTEX_CMP_REQUEUE 7074 ? tswap32(val3) 7075 : val3)); 7076 default: 7077 return -TARGET_ENOSYS; 7078 } 7079 } 7080 #endif 7081 7082 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7083 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7084 abi_long handle, abi_long mount_id, 7085 abi_long flags) 7086 { 7087 struct file_handle *target_fh; 7088 struct file_handle *fh; 7089 int mid = 0; 7090 abi_long ret; 7091 char *name; 7092 unsigned int size, total_size; 7093 7094 if (get_user_s32(size, handle)) { 7095 return -TARGET_EFAULT; 7096 } 7097 7098 name = lock_user_string(pathname); 7099 if (!name) { 7100 return -TARGET_EFAULT; 7101 } 7102 7103 total_size = sizeof(struct file_handle) + size; 7104 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7105 if (!target_fh) { 7106 unlock_user(name, pathname, 0); 7107 return -TARGET_EFAULT; 7108 } 7109 7110 fh = g_malloc0(total_size); 7111 fh->handle_bytes = size; 7112 7113 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7114 unlock_user(name, pathname, 0); 7115 7116 /* man name_to_handle_at(2): 7117 * Other than the use of the handle_bytes field, the caller should treat 7118 * the file_handle structure as an opaque data type 7119 */ 7120 7121 memcpy(target_fh, fh, total_size); 7122 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7123 target_fh->handle_type = tswap32(fh->handle_type); 7124 g_free(fh); 7125 unlock_user(target_fh, handle, total_size); 7126 7127 if (put_user_s32(mid, mount_id)) { 7128 return -TARGET_EFAULT; 7129 } 7130 7131 return ret; 7132 7133 } 7134 #endif 7135 7136 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7137 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7138 abi_long flags) 7139 { 7140 struct file_handle *target_fh; 7141 struct file_handle *fh; 7142 unsigned int size, total_size; 7143 abi_long ret; 7144 7145 if (get_user_s32(size, handle)) { 7146 return -TARGET_EFAULT; 7147 } 7148 7149 total_size = sizeof(struct file_handle) + size; 7150 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7151 if (!target_fh) { 7152 return -TARGET_EFAULT; 7153 } 7154 7155 fh = g_memdup(target_fh, total_size); 7156 fh->handle_bytes = size; 7157 fh->handle_type = tswap32(target_fh->handle_type); 7158 7159 ret = get_errno(open_by_handle_at(mount_fd, fh, 7160 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7161 7162 g_free(fh); 7163 7164 unlock_user(target_fh, handle, total_size); 7165 7166 return ret; 7167 } 7168 #endif 7169 7170 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7171 7172 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7173 { 7174 int host_flags; 7175 target_sigset_t *target_mask; 7176 sigset_t host_mask; 7177 abi_long ret; 7178 7179 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) { 7180 return -TARGET_EINVAL; 7181 } 7182 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7183 return -TARGET_EFAULT; 7184 } 7185 7186 target_to_host_sigset(&host_mask, target_mask); 7187 7188 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7189 7190 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7191 if (ret >= 0) { 7192 fd_trans_register(ret, &target_signalfd_trans); 7193 } 7194 7195 unlock_user_struct(target_mask, mask, 0); 7196 7197 return ret; 7198 } 7199 #endif 7200 7201 /* Map host to target signal numbers for the wait family of syscalls. 7202 Assume all other status bits are the same. */ 7203 int host_to_target_waitstatus(int status) 7204 { 7205 if (WIFSIGNALED(status)) { 7206 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7207 } 7208 if (WIFSTOPPED(status)) { 7209 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7210 | (status & 0xff); 7211 } 7212 return status; 7213 } 7214 7215 static int open_self_cmdline(void *cpu_env, int fd) 7216 { 7217 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7218 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7219 int i; 7220 7221 for (i = 0; i < bprm->argc; i++) { 7222 size_t len = strlen(bprm->argv[i]) + 1; 7223 7224 if (write(fd, bprm->argv[i], len) != len) { 7225 return -1; 7226 } 7227 } 7228 7229 return 0; 7230 } 7231 7232 static int open_self_maps(void *cpu_env, int fd) 7233 { 7234 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7235 TaskState *ts = cpu->opaque; 7236 GSList *map_info = read_self_maps(); 7237 GSList *s; 7238 7239 for (s = map_info; s; s = g_slist_next(s)) { 7240 MapInfo *e = (MapInfo *) s->data; 7241 7242 if (h2g_valid(e->start)) { 7243 unsigned long min = e->start; 7244 unsigned long max = e->end; 7245 int flags = page_get_flags(h2g(min)); 7246 const char *path; 7247 7248 max = h2g_valid(max - 1) ? 7249 max : (uintptr_t) g2h(GUEST_ADDR_MAX) + 1; 7250 7251 if (page_check_range(h2g(min), max - min, flags) == -1) { 7252 continue; 7253 } 7254 7255 if (h2g(min) == ts->info->stack_limit) { 7256 path = " [stack]"; 7257 } else { 7258 path = e->path; 7259 } 7260 7261 dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 7262 " %c%c%c%c %08" PRIx64 " %s %"PRId64" %s%s\n", 7263 h2g(min), h2g(max - 1) + 1, 7264 e->is_read ? 'r' : '-', 7265 e->is_write ? 'w' : '-', 7266 e->is_exec ? 'x' : '-', 7267 e->is_priv ? 'p' : '-', 7268 (uint64_t) e->offset, e->dev, e->inode, 7269 path ? " " : "", path ? path : ""); 7270 } 7271 } 7272 7273 free_self_maps(map_info); 7274 7275 #ifdef TARGET_VSYSCALL_PAGE 7276 /* 7277 * We only support execution from the vsyscall page. 7278 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 7279 */ 7280 dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 7281 " --xp 00000000 00:00 0 [vsyscall]\n", 7282 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 7283 #endif 7284 7285 return 0; 7286 } 7287 7288 static int open_self_stat(void *cpu_env, int fd) 7289 { 7290 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7291 TaskState *ts = cpu->opaque; 7292 abi_ulong start_stack = ts->info->start_stack; 7293 int i; 7294 7295 for (i = 0; i < 44; i++) { 7296 char buf[128]; 7297 int len; 7298 uint64_t val = 0; 7299 7300 if (i == 0) { 7301 /* pid */ 7302 val = getpid(); 7303 snprintf(buf, sizeof(buf), "%"PRId64 " ", val); 7304 } else if (i == 1) { 7305 /* app name */ 7306 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]); 7307 } else if (i == 27) { 7308 /* stack bottom */ 7309 val = start_stack; 7310 snprintf(buf, sizeof(buf), "%"PRId64 " ", val); 7311 } else { 7312 /* for the rest, there is MasterCard */ 7313 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' '); 7314 } 7315 7316 len = strlen(buf); 7317 if (write(fd, buf, len) != len) { 7318 return -1; 7319 } 7320 } 7321 7322 return 0; 7323 } 7324 7325 static int open_self_auxv(void *cpu_env, int fd) 7326 { 7327 CPUState *cpu = env_cpu((CPUArchState *)cpu_env); 7328 TaskState *ts = cpu->opaque; 7329 abi_ulong auxv = ts->info->saved_auxv; 7330 abi_ulong len = ts->info->auxv_len; 7331 char *ptr; 7332 7333 /* 7334 * Auxiliary vector is stored in target process stack. 7335 * read in whole auxv vector and copy it to file 7336 */ 7337 ptr = lock_user(VERIFY_READ, auxv, len, 0); 7338 if (ptr != NULL) { 7339 while (len > 0) { 7340 ssize_t r; 7341 r = write(fd, ptr, len); 7342 if (r <= 0) { 7343 break; 7344 } 7345 len -= r; 7346 ptr += r; 7347 } 7348 lseek(fd, 0, SEEK_SET); 7349 unlock_user(ptr, auxv, len); 7350 } 7351 7352 return 0; 7353 } 7354 7355 static int is_proc_myself(const char *filename, const char *entry) 7356 { 7357 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 7358 filename += strlen("/proc/"); 7359 if (!strncmp(filename, "self/", strlen("self/"))) { 7360 filename += strlen("self/"); 7361 } else if (*filename >= '1' && *filename <= '9') { 7362 char myself[80]; 7363 snprintf(myself, sizeof(myself), "%d/", getpid()); 7364 if (!strncmp(filename, myself, strlen(myself))) { 7365 filename += strlen(myself); 7366 } else { 7367 return 0; 7368 } 7369 } else { 7370 return 0; 7371 } 7372 if (!strcmp(filename, entry)) { 7373 return 1; 7374 } 7375 } 7376 return 0; 7377 } 7378 7379 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \ 7380 defined(TARGET_SPARC) || defined(TARGET_M68K) 7381 static int is_proc(const char *filename, const char *entry) 7382 { 7383 return strcmp(filename, entry) == 0; 7384 } 7385 #endif 7386 7387 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 7388 static int open_net_route(void *cpu_env, int fd) 7389 { 7390 FILE *fp; 7391 char *line = NULL; 7392 size_t len = 0; 7393 ssize_t read; 7394 7395 fp = fopen("/proc/net/route", "r"); 7396 if (fp == NULL) { 7397 return -1; 7398 } 7399 7400 /* read header */ 7401 7402 read = getline(&line, &len, fp); 7403 dprintf(fd, "%s", line); 7404 7405 /* read routes */ 7406 7407 while ((read = getline(&line, &len, fp)) != -1) { 7408 char iface[16]; 7409 uint32_t dest, gw, mask; 7410 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 7411 int fields; 7412 7413 fields = sscanf(line, 7414 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 7415 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 7416 &mask, &mtu, &window, &irtt); 7417 if (fields != 11) { 7418 continue; 7419 } 7420 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 7421 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 7422 metric, tswap32(mask), mtu, window, irtt); 7423 } 7424 7425 free(line); 7426 fclose(fp); 7427 7428 return 0; 7429 } 7430 #endif 7431 7432 #if defined(TARGET_SPARC) 7433 static int open_cpuinfo(void *cpu_env, int fd) 7434 { 7435 dprintf(fd, "type\t\t: sun4u\n"); 7436 return 0; 7437 } 7438 #endif 7439 7440 #if defined(TARGET_M68K) 7441 static int open_hardware(void *cpu_env, int fd) 7442 { 7443 dprintf(fd, "Model:\t\tqemu-m68k\n"); 7444 return 0; 7445 } 7446 #endif 7447 7448 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 7449 { 7450 struct fake_open { 7451 const char *filename; 7452 int (*fill)(void *cpu_env, int fd); 7453 int (*cmp)(const char *s1, const char *s2); 7454 }; 7455 const struct fake_open *fake_open; 7456 static const struct fake_open fakes[] = { 7457 { "maps", open_self_maps, is_proc_myself }, 7458 { "stat", open_self_stat, is_proc_myself }, 7459 { "auxv", open_self_auxv, is_proc_myself }, 7460 { "cmdline", open_self_cmdline, is_proc_myself }, 7461 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 7462 { "/proc/net/route", open_net_route, is_proc }, 7463 #endif 7464 #if defined(TARGET_SPARC) 7465 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 7466 #endif 7467 #if defined(TARGET_M68K) 7468 { "/proc/hardware", open_hardware, is_proc }, 7469 #endif 7470 { NULL, NULL, NULL } 7471 }; 7472 7473 if (is_proc_myself(pathname, "exe")) { 7474 int execfd = qemu_getauxval(AT_EXECFD); 7475 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 7476 } 7477 7478 for (fake_open = fakes; fake_open->filename; fake_open++) { 7479 if (fake_open->cmp(pathname, fake_open->filename)) { 7480 break; 7481 } 7482 } 7483 7484 if (fake_open->filename) { 7485 const char *tmpdir; 7486 char filename[PATH_MAX]; 7487 int fd, r; 7488 7489 /* create temporary file to map stat to */ 7490 tmpdir = getenv("TMPDIR"); 7491 if (!tmpdir) 7492 tmpdir = "/tmp"; 7493 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 7494 fd = mkstemp(filename); 7495 if (fd < 0) { 7496 return fd; 7497 } 7498 unlink(filename); 7499 7500 if ((r = fake_open->fill(cpu_env, fd))) { 7501 int e = errno; 7502 close(fd); 7503 errno = e; 7504 return r; 7505 } 7506 lseek(fd, 0, SEEK_SET); 7507 7508 return fd; 7509 } 7510 7511 return safe_openat(dirfd, path(pathname), flags, mode); 7512 } 7513 7514 #define TIMER_MAGIC 0x0caf0000 7515 #define TIMER_MAGIC_MASK 0xffff0000 7516 7517 /* Convert QEMU provided timer ID back to internal 16bit index format */ 7518 static target_timer_t get_timer_id(abi_long arg) 7519 { 7520 target_timer_t timerid = arg; 7521 7522 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 7523 return -TARGET_EINVAL; 7524 } 7525 7526 timerid &= 0xffff; 7527 7528 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 7529 return -TARGET_EINVAL; 7530 } 7531 7532 return timerid; 7533 } 7534 7535 static int target_to_host_cpu_mask(unsigned long *host_mask, 7536 size_t host_size, 7537 abi_ulong target_addr, 7538 size_t target_size) 7539 { 7540 unsigned target_bits = sizeof(abi_ulong) * 8; 7541 unsigned host_bits = sizeof(*host_mask) * 8; 7542 abi_ulong *target_mask; 7543 unsigned i, j; 7544 7545 assert(host_size >= target_size); 7546 7547 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 7548 if (!target_mask) { 7549 return -TARGET_EFAULT; 7550 } 7551 memset(host_mask, 0, host_size); 7552 7553 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 7554 unsigned bit = i * target_bits; 7555 abi_ulong val; 7556 7557 __get_user(val, &target_mask[i]); 7558 for (j = 0; j < target_bits; j++, bit++) { 7559 if (val & (1UL << j)) { 7560 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 7561 } 7562 } 7563 } 7564 7565 unlock_user(target_mask, target_addr, 0); 7566 return 0; 7567 } 7568 7569 static int host_to_target_cpu_mask(const unsigned long *host_mask, 7570 size_t host_size, 7571 abi_ulong target_addr, 7572 size_t target_size) 7573 { 7574 unsigned target_bits = sizeof(abi_ulong) * 8; 7575 unsigned host_bits = sizeof(*host_mask) * 8; 7576 abi_ulong *target_mask; 7577 unsigned i, j; 7578 7579 assert(host_size >= target_size); 7580 7581 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 7582 if (!target_mask) { 7583 return -TARGET_EFAULT; 7584 } 7585 7586 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 7587 unsigned bit = i * target_bits; 7588 abi_ulong val = 0; 7589 7590 for (j = 0; j < target_bits; j++, bit++) { 7591 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 7592 val |= 1UL << j; 7593 } 7594 } 7595 __put_user(val, &target_mask[i]); 7596 } 7597 7598 unlock_user(target_mask, target_addr, target_size); 7599 return 0; 7600 } 7601 7602 /* This is an internal helper for do_syscall so that it is easier 7603 * to have a single return point, so that actions, such as logging 7604 * of syscall results, can be performed. 7605 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 7606 */ 7607 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, 7608 abi_long arg2, abi_long arg3, abi_long arg4, 7609 abi_long arg5, abi_long arg6, abi_long arg7, 7610 abi_long arg8) 7611 { 7612 CPUState *cpu = env_cpu(cpu_env); 7613 abi_long ret; 7614 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 7615 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 7616 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 7617 || defined(TARGET_NR_statx) 7618 struct stat st; 7619 #endif 7620 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 7621 || defined(TARGET_NR_fstatfs) 7622 struct statfs stfs; 7623 #endif 7624 void *p; 7625 7626 switch(num) { 7627 case TARGET_NR_exit: 7628 /* In old applications this may be used to implement _exit(2). 7629 However in threaded applictions it is used for thread termination, 7630 and _exit_group is used for application termination. 7631 Do thread termination if we have more then one thread. */ 7632 7633 if (block_signals()) { 7634 return -TARGET_ERESTARTSYS; 7635 } 7636 7637 cpu_list_lock(); 7638 7639 if (CPU_NEXT(first_cpu)) { 7640 TaskState *ts; 7641 7642 /* Remove the CPU from the list. */ 7643 QTAILQ_REMOVE_RCU(&cpus, cpu, node); 7644 7645 cpu_list_unlock(); 7646 7647 ts = cpu->opaque; 7648 if (ts->child_tidptr) { 7649 put_user_u32(0, ts->child_tidptr); 7650 do_sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX, 7651 NULL, NULL, 0); 7652 } 7653 thread_cpu = NULL; 7654 object_unref(OBJECT(cpu)); 7655 g_free(ts); 7656 rcu_unregister_thread(); 7657 pthread_exit(NULL); 7658 } 7659 7660 cpu_list_unlock(); 7661 preexit_cleanup(cpu_env, arg1); 7662 _exit(arg1); 7663 return 0; /* avoid warning */ 7664 case TARGET_NR_read: 7665 if (arg2 == 0 && arg3 == 0) { 7666 return get_errno(safe_read(arg1, 0, 0)); 7667 } else { 7668 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 7669 return -TARGET_EFAULT; 7670 ret = get_errno(safe_read(arg1, p, arg3)); 7671 if (ret >= 0 && 7672 fd_trans_host_to_target_data(arg1)) { 7673 ret = fd_trans_host_to_target_data(arg1)(p, ret); 7674 } 7675 unlock_user(p, arg2, ret); 7676 } 7677 return ret; 7678 case TARGET_NR_write: 7679 if (arg2 == 0 && arg3 == 0) { 7680 return get_errno(safe_write(arg1, 0, 0)); 7681 } 7682 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 7683 return -TARGET_EFAULT; 7684 if (fd_trans_target_to_host_data(arg1)) { 7685 void *copy = g_malloc(arg3); 7686 memcpy(copy, p, arg3); 7687 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 7688 if (ret >= 0) { 7689 ret = get_errno(safe_write(arg1, copy, ret)); 7690 } 7691 g_free(copy); 7692 } else { 7693 ret = get_errno(safe_write(arg1, p, arg3)); 7694 } 7695 unlock_user(p, arg2, 0); 7696 return ret; 7697 7698 #ifdef TARGET_NR_open 7699 case TARGET_NR_open: 7700 if (!(p = lock_user_string(arg1))) 7701 return -TARGET_EFAULT; 7702 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 7703 target_to_host_bitmask(arg2, fcntl_flags_tbl), 7704 arg3)); 7705 fd_trans_unregister(ret); 7706 unlock_user(p, arg1, 0); 7707 return ret; 7708 #endif 7709 case TARGET_NR_openat: 7710 if (!(p = lock_user_string(arg2))) 7711 return -TARGET_EFAULT; 7712 ret = get_errno(do_openat(cpu_env, arg1, p, 7713 target_to_host_bitmask(arg3, fcntl_flags_tbl), 7714 arg4)); 7715 fd_trans_unregister(ret); 7716 unlock_user(p, arg2, 0); 7717 return ret; 7718 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7719 case TARGET_NR_name_to_handle_at: 7720 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 7721 return ret; 7722 #endif 7723 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7724 case TARGET_NR_open_by_handle_at: 7725 ret = do_open_by_handle_at(arg1, arg2, arg3); 7726 fd_trans_unregister(ret); 7727 return ret; 7728 #endif 7729 case TARGET_NR_close: 7730 fd_trans_unregister(arg1); 7731 return get_errno(close(arg1)); 7732 7733 case TARGET_NR_brk: 7734 return do_brk(arg1); 7735 #ifdef TARGET_NR_fork 7736 case TARGET_NR_fork: 7737 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 7738 #endif 7739 #ifdef TARGET_NR_waitpid 7740 case TARGET_NR_waitpid: 7741 { 7742 int status; 7743 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 7744 if (!is_error(ret) && arg2 && ret 7745 && put_user_s32(host_to_target_waitstatus(status), arg2)) 7746 return -TARGET_EFAULT; 7747 } 7748 return ret; 7749 #endif 7750 #ifdef TARGET_NR_waitid 7751 case TARGET_NR_waitid: 7752 { 7753 siginfo_t info; 7754 info.si_pid = 0; 7755 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 7756 if (!is_error(ret) && arg3 && info.si_pid != 0) { 7757 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 7758 return -TARGET_EFAULT; 7759 host_to_target_siginfo(p, &info); 7760 unlock_user(p, arg3, sizeof(target_siginfo_t)); 7761 } 7762 } 7763 return ret; 7764 #endif 7765 #ifdef TARGET_NR_creat /* not on alpha */ 7766 case TARGET_NR_creat: 7767 if (!(p = lock_user_string(arg1))) 7768 return -TARGET_EFAULT; 7769 ret = get_errno(creat(p, arg2)); 7770 fd_trans_unregister(ret); 7771 unlock_user(p, arg1, 0); 7772 return ret; 7773 #endif 7774 #ifdef TARGET_NR_link 7775 case TARGET_NR_link: 7776 { 7777 void * p2; 7778 p = lock_user_string(arg1); 7779 p2 = lock_user_string(arg2); 7780 if (!p || !p2) 7781 ret = -TARGET_EFAULT; 7782 else 7783 ret = get_errno(link(p, p2)); 7784 unlock_user(p2, arg2, 0); 7785 unlock_user(p, arg1, 0); 7786 } 7787 return ret; 7788 #endif 7789 #if defined(TARGET_NR_linkat) 7790 case TARGET_NR_linkat: 7791 { 7792 void * p2 = NULL; 7793 if (!arg2 || !arg4) 7794 return -TARGET_EFAULT; 7795 p = lock_user_string(arg2); 7796 p2 = lock_user_string(arg4); 7797 if (!p || !p2) 7798 ret = -TARGET_EFAULT; 7799 else 7800 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 7801 unlock_user(p, arg2, 0); 7802 unlock_user(p2, arg4, 0); 7803 } 7804 return ret; 7805 #endif 7806 #ifdef TARGET_NR_unlink 7807 case TARGET_NR_unlink: 7808 if (!(p = lock_user_string(arg1))) 7809 return -TARGET_EFAULT; 7810 ret = get_errno(unlink(p)); 7811 unlock_user(p, arg1, 0); 7812 return ret; 7813 #endif 7814 #if defined(TARGET_NR_unlinkat) 7815 case TARGET_NR_unlinkat: 7816 if (!(p = lock_user_string(arg2))) 7817 return -TARGET_EFAULT; 7818 ret = get_errno(unlinkat(arg1, p, arg3)); 7819 unlock_user(p, arg2, 0); 7820 return ret; 7821 #endif 7822 case TARGET_NR_execve: 7823 { 7824 char **argp, **envp; 7825 int argc, envc; 7826 abi_ulong gp; 7827 abi_ulong guest_argp; 7828 abi_ulong guest_envp; 7829 abi_ulong addr; 7830 char **q; 7831 int total_size = 0; 7832 7833 argc = 0; 7834 guest_argp = arg2; 7835 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 7836 if (get_user_ual(addr, gp)) 7837 return -TARGET_EFAULT; 7838 if (!addr) 7839 break; 7840 argc++; 7841 } 7842 envc = 0; 7843 guest_envp = arg3; 7844 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 7845 if (get_user_ual(addr, gp)) 7846 return -TARGET_EFAULT; 7847 if (!addr) 7848 break; 7849 envc++; 7850 } 7851 7852 argp = g_new0(char *, argc + 1); 7853 envp = g_new0(char *, envc + 1); 7854 7855 for (gp = guest_argp, q = argp; gp; 7856 gp += sizeof(abi_ulong), q++) { 7857 if (get_user_ual(addr, gp)) 7858 goto execve_efault; 7859 if (!addr) 7860 break; 7861 if (!(*q = lock_user_string(addr))) 7862 goto execve_efault; 7863 total_size += strlen(*q) + 1; 7864 } 7865 *q = NULL; 7866 7867 for (gp = guest_envp, q = envp; gp; 7868 gp += sizeof(abi_ulong), q++) { 7869 if (get_user_ual(addr, gp)) 7870 goto execve_efault; 7871 if (!addr) 7872 break; 7873 if (!(*q = lock_user_string(addr))) 7874 goto execve_efault; 7875 total_size += strlen(*q) + 1; 7876 } 7877 *q = NULL; 7878 7879 if (!(p = lock_user_string(arg1))) 7880 goto execve_efault; 7881 /* Although execve() is not an interruptible syscall it is 7882 * a special case where we must use the safe_syscall wrapper: 7883 * if we allow a signal to happen before we make the host 7884 * syscall then we will 'lose' it, because at the point of 7885 * execve the process leaves QEMU's control. So we use the 7886 * safe syscall wrapper to ensure that we either take the 7887 * signal as a guest signal, or else it does not happen 7888 * before the execve completes and makes it the other 7889 * program's problem. 7890 */ 7891 ret = get_errno(safe_execve(p, argp, envp)); 7892 unlock_user(p, arg1, 0); 7893 7894 goto execve_end; 7895 7896 execve_efault: 7897 ret = -TARGET_EFAULT; 7898 7899 execve_end: 7900 for (gp = guest_argp, q = argp; *q; 7901 gp += sizeof(abi_ulong), q++) { 7902 if (get_user_ual(addr, gp) 7903 || !addr) 7904 break; 7905 unlock_user(*q, addr, 0); 7906 } 7907 for (gp = guest_envp, q = envp; *q; 7908 gp += sizeof(abi_ulong), q++) { 7909 if (get_user_ual(addr, gp) 7910 || !addr) 7911 break; 7912 unlock_user(*q, addr, 0); 7913 } 7914 7915 g_free(argp); 7916 g_free(envp); 7917 } 7918 return ret; 7919 case TARGET_NR_chdir: 7920 if (!(p = lock_user_string(arg1))) 7921 return -TARGET_EFAULT; 7922 ret = get_errno(chdir(p)); 7923 unlock_user(p, arg1, 0); 7924 return ret; 7925 #ifdef TARGET_NR_time 7926 case TARGET_NR_time: 7927 { 7928 time_t host_time; 7929 ret = get_errno(time(&host_time)); 7930 if (!is_error(ret) 7931 && arg1 7932 && put_user_sal(host_time, arg1)) 7933 return -TARGET_EFAULT; 7934 } 7935 return ret; 7936 #endif 7937 #ifdef TARGET_NR_mknod 7938 case TARGET_NR_mknod: 7939 if (!(p = lock_user_string(arg1))) 7940 return -TARGET_EFAULT; 7941 ret = get_errno(mknod(p, arg2, arg3)); 7942 unlock_user(p, arg1, 0); 7943 return ret; 7944 #endif 7945 #if defined(TARGET_NR_mknodat) 7946 case TARGET_NR_mknodat: 7947 if (!(p = lock_user_string(arg2))) 7948 return -TARGET_EFAULT; 7949 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 7950 unlock_user(p, arg2, 0); 7951 return ret; 7952 #endif 7953 #ifdef TARGET_NR_chmod 7954 case TARGET_NR_chmod: 7955 if (!(p = lock_user_string(arg1))) 7956 return -TARGET_EFAULT; 7957 ret = get_errno(chmod(p, arg2)); 7958 unlock_user(p, arg1, 0); 7959 return ret; 7960 #endif 7961 #ifdef TARGET_NR_lseek 7962 case TARGET_NR_lseek: 7963 return get_errno(lseek(arg1, arg2, arg3)); 7964 #endif 7965 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 7966 /* Alpha specific */ 7967 case TARGET_NR_getxpid: 7968 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); 7969 return get_errno(getpid()); 7970 #endif 7971 #ifdef TARGET_NR_getpid 7972 case TARGET_NR_getpid: 7973 return get_errno(getpid()); 7974 #endif 7975 case TARGET_NR_mount: 7976 { 7977 /* need to look at the data field */ 7978 void *p2, *p3; 7979 7980 if (arg1) { 7981 p = lock_user_string(arg1); 7982 if (!p) { 7983 return -TARGET_EFAULT; 7984 } 7985 } else { 7986 p = NULL; 7987 } 7988 7989 p2 = lock_user_string(arg2); 7990 if (!p2) { 7991 if (arg1) { 7992 unlock_user(p, arg1, 0); 7993 } 7994 return -TARGET_EFAULT; 7995 } 7996 7997 if (arg3) { 7998 p3 = lock_user_string(arg3); 7999 if (!p3) { 8000 if (arg1) { 8001 unlock_user(p, arg1, 0); 8002 } 8003 unlock_user(p2, arg2, 0); 8004 return -TARGET_EFAULT; 8005 } 8006 } else { 8007 p3 = NULL; 8008 } 8009 8010 /* FIXME - arg5 should be locked, but it isn't clear how to 8011 * do that since it's not guaranteed to be a NULL-terminated 8012 * string. 8013 */ 8014 if (!arg5) { 8015 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8016 } else { 8017 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5)); 8018 } 8019 ret = get_errno(ret); 8020 8021 if (arg1) { 8022 unlock_user(p, arg1, 0); 8023 } 8024 unlock_user(p2, arg2, 0); 8025 if (arg3) { 8026 unlock_user(p3, arg3, 0); 8027 } 8028 } 8029 return ret; 8030 #ifdef TARGET_NR_umount 8031 case TARGET_NR_umount: 8032 if (!(p = lock_user_string(arg1))) 8033 return -TARGET_EFAULT; 8034 ret = get_errno(umount(p)); 8035 unlock_user(p, arg1, 0); 8036 return ret; 8037 #endif 8038 #ifdef TARGET_NR_stime /* not on alpha */ 8039 case TARGET_NR_stime: 8040 { 8041 struct timespec ts; 8042 ts.tv_nsec = 0; 8043 if (get_user_sal(ts.tv_sec, arg1)) { 8044 return -TARGET_EFAULT; 8045 } 8046 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 8047 } 8048 #endif 8049 #ifdef TARGET_NR_alarm /* not on alpha */ 8050 case TARGET_NR_alarm: 8051 return alarm(arg1); 8052 #endif 8053 #ifdef TARGET_NR_pause /* not on alpha */ 8054 case TARGET_NR_pause: 8055 if (!block_signals()) { 8056 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 8057 } 8058 return -TARGET_EINTR; 8059 #endif 8060 #ifdef TARGET_NR_utime 8061 case TARGET_NR_utime: 8062 { 8063 struct utimbuf tbuf, *host_tbuf; 8064 struct target_utimbuf *target_tbuf; 8065 if (arg2) { 8066 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 8067 return -TARGET_EFAULT; 8068 tbuf.actime = tswapal(target_tbuf->actime); 8069 tbuf.modtime = tswapal(target_tbuf->modtime); 8070 unlock_user_struct(target_tbuf, arg2, 0); 8071 host_tbuf = &tbuf; 8072 } else { 8073 host_tbuf = NULL; 8074 } 8075 if (!(p = lock_user_string(arg1))) 8076 return -TARGET_EFAULT; 8077 ret = get_errno(utime(p, host_tbuf)); 8078 unlock_user(p, arg1, 0); 8079 } 8080 return ret; 8081 #endif 8082 #ifdef TARGET_NR_utimes 8083 case TARGET_NR_utimes: 8084 { 8085 struct timeval *tvp, tv[2]; 8086 if (arg2) { 8087 if (copy_from_user_timeval(&tv[0], arg2) 8088 || copy_from_user_timeval(&tv[1], 8089 arg2 + sizeof(struct target_timeval))) 8090 return -TARGET_EFAULT; 8091 tvp = tv; 8092 } else { 8093 tvp = NULL; 8094 } 8095 if (!(p = lock_user_string(arg1))) 8096 return -TARGET_EFAULT; 8097 ret = get_errno(utimes(p, tvp)); 8098 unlock_user(p, arg1, 0); 8099 } 8100 return ret; 8101 #endif 8102 #if defined(TARGET_NR_futimesat) 8103 case TARGET_NR_futimesat: 8104 { 8105 struct timeval *tvp, tv[2]; 8106 if (arg3) { 8107 if (copy_from_user_timeval(&tv[0], arg3) 8108 || copy_from_user_timeval(&tv[1], 8109 arg3 + sizeof(struct target_timeval))) 8110 return -TARGET_EFAULT; 8111 tvp = tv; 8112 } else { 8113 tvp = NULL; 8114 } 8115 if (!(p = lock_user_string(arg2))) { 8116 return -TARGET_EFAULT; 8117 } 8118 ret = get_errno(futimesat(arg1, path(p), tvp)); 8119 unlock_user(p, arg2, 0); 8120 } 8121 return ret; 8122 #endif 8123 #ifdef TARGET_NR_access 8124 case TARGET_NR_access: 8125 if (!(p = lock_user_string(arg1))) { 8126 return -TARGET_EFAULT; 8127 } 8128 ret = get_errno(access(path(p), arg2)); 8129 unlock_user(p, arg1, 0); 8130 return ret; 8131 #endif 8132 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 8133 case TARGET_NR_faccessat: 8134 if (!(p = lock_user_string(arg2))) { 8135 return -TARGET_EFAULT; 8136 } 8137 ret = get_errno(faccessat(arg1, p, arg3, 0)); 8138 unlock_user(p, arg2, 0); 8139 return ret; 8140 #endif 8141 #ifdef TARGET_NR_nice /* not on alpha */ 8142 case TARGET_NR_nice: 8143 return get_errno(nice(arg1)); 8144 #endif 8145 case TARGET_NR_sync: 8146 sync(); 8147 return 0; 8148 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 8149 case TARGET_NR_syncfs: 8150 return get_errno(syncfs(arg1)); 8151 #endif 8152 case TARGET_NR_kill: 8153 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 8154 #ifdef TARGET_NR_rename 8155 case TARGET_NR_rename: 8156 { 8157 void *p2; 8158 p = lock_user_string(arg1); 8159 p2 = lock_user_string(arg2); 8160 if (!p || !p2) 8161 ret = -TARGET_EFAULT; 8162 else 8163 ret = get_errno(rename(p, p2)); 8164 unlock_user(p2, arg2, 0); 8165 unlock_user(p, arg1, 0); 8166 } 8167 return ret; 8168 #endif 8169 #if defined(TARGET_NR_renameat) 8170 case TARGET_NR_renameat: 8171 { 8172 void *p2; 8173 p = lock_user_string(arg2); 8174 p2 = lock_user_string(arg4); 8175 if (!p || !p2) 8176 ret = -TARGET_EFAULT; 8177 else 8178 ret = get_errno(renameat(arg1, p, arg3, p2)); 8179 unlock_user(p2, arg4, 0); 8180 unlock_user(p, arg2, 0); 8181 } 8182 return ret; 8183 #endif 8184 #if defined(TARGET_NR_renameat2) 8185 case TARGET_NR_renameat2: 8186 { 8187 void *p2; 8188 p = lock_user_string(arg2); 8189 p2 = lock_user_string(arg4); 8190 if (!p || !p2) { 8191 ret = -TARGET_EFAULT; 8192 } else { 8193 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 8194 } 8195 unlock_user(p2, arg4, 0); 8196 unlock_user(p, arg2, 0); 8197 } 8198 return ret; 8199 #endif 8200 #ifdef TARGET_NR_mkdir 8201 case TARGET_NR_mkdir: 8202 if (!(p = lock_user_string(arg1))) 8203 return -TARGET_EFAULT; 8204 ret = get_errno(mkdir(p, arg2)); 8205 unlock_user(p, arg1, 0); 8206 return ret; 8207 #endif 8208 #if defined(TARGET_NR_mkdirat) 8209 case TARGET_NR_mkdirat: 8210 if (!(p = lock_user_string(arg2))) 8211 return -TARGET_EFAULT; 8212 ret = get_errno(mkdirat(arg1, p, arg3)); 8213 unlock_user(p, arg2, 0); 8214 return ret; 8215 #endif 8216 #ifdef TARGET_NR_rmdir 8217 case TARGET_NR_rmdir: 8218 if (!(p = lock_user_string(arg1))) 8219 return -TARGET_EFAULT; 8220 ret = get_errno(rmdir(p)); 8221 unlock_user(p, arg1, 0); 8222 return ret; 8223 #endif 8224 case TARGET_NR_dup: 8225 ret = get_errno(dup(arg1)); 8226 if (ret >= 0) { 8227 fd_trans_dup(arg1, ret); 8228 } 8229 return ret; 8230 #ifdef TARGET_NR_pipe 8231 case TARGET_NR_pipe: 8232 return do_pipe(cpu_env, arg1, 0, 0); 8233 #endif 8234 #ifdef TARGET_NR_pipe2 8235 case TARGET_NR_pipe2: 8236 return do_pipe(cpu_env, arg1, 8237 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 8238 #endif 8239 case TARGET_NR_times: 8240 { 8241 struct target_tms *tmsp; 8242 struct tms tms; 8243 ret = get_errno(times(&tms)); 8244 if (arg1) { 8245 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 8246 if (!tmsp) 8247 return -TARGET_EFAULT; 8248 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 8249 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 8250 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 8251 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 8252 } 8253 if (!is_error(ret)) 8254 ret = host_to_target_clock_t(ret); 8255 } 8256 return ret; 8257 case TARGET_NR_acct: 8258 if (arg1 == 0) { 8259 ret = get_errno(acct(NULL)); 8260 } else { 8261 if (!(p = lock_user_string(arg1))) { 8262 return -TARGET_EFAULT; 8263 } 8264 ret = get_errno(acct(path(p))); 8265 unlock_user(p, arg1, 0); 8266 } 8267 return ret; 8268 #ifdef TARGET_NR_umount2 8269 case TARGET_NR_umount2: 8270 if (!(p = lock_user_string(arg1))) 8271 return -TARGET_EFAULT; 8272 ret = get_errno(umount2(p, arg2)); 8273 unlock_user(p, arg1, 0); 8274 return ret; 8275 #endif 8276 case TARGET_NR_ioctl: 8277 return do_ioctl(arg1, arg2, arg3); 8278 #ifdef TARGET_NR_fcntl 8279 case TARGET_NR_fcntl: 8280 return do_fcntl(arg1, arg2, arg3); 8281 #endif 8282 case TARGET_NR_setpgid: 8283 return get_errno(setpgid(arg1, arg2)); 8284 case TARGET_NR_umask: 8285 return get_errno(umask(arg1)); 8286 case TARGET_NR_chroot: 8287 if (!(p = lock_user_string(arg1))) 8288 return -TARGET_EFAULT; 8289 ret = get_errno(chroot(p)); 8290 unlock_user(p, arg1, 0); 8291 return ret; 8292 #ifdef TARGET_NR_dup2 8293 case TARGET_NR_dup2: 8294 ret = get_errno(dup2(arg1, arg2)); 8295 if (ret >= 0) { 8296 fd_trans_dup(arg1, arg2); 8297 } 8298 return ret; 8299 #endif 8300 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 8301 case TARGET_NR_dup3: 8302 { 8303 int host_flags; 8304 8305 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 8306 return -EINVAL; 8307 } 8308 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 8309 ret = get_errno(dup3(arg1, arg2, host_flags)); 8310 if (ret >= 0) { 8311 fd_trans_dup(arg1, arg2); 8312 } 8313 return ret; 8314 } 8315 #endif 8316 #ifdef TARGET_NR_getppid /* not on alpha */ 8317 case TARGET_NR_getppid: 8318 return get_errno(getppid()); 8319 #endif 8320 #ifdef TARGET_NR_getpgrp 8321 case TARGET_NR_getpgrp: 8322 return get_errno(getpgrp()); 8323 #endif 8324 case TARGET_NR_setsid: 8325 return get_errno(setsid()); 8326 #ifdef TARGET_NR_sigaction 8327 case TARGET_NR_sigaction: 8328 { 8329 #if defined(TARGET_ALPHA) 8330 struct target_sigaction act, oact, *pact = 0; 8331 struct target_old_sigaction *old_act; 8332 if (arg2) { 8333 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8334 return -TARGET_EFAULT; 8335 act._sa_handler = old_act->_sa_handler; 8336 target_siginitset(&act.sa_mask, old_act->sa_mask); 8337 act.sa_flags = old_act->sa_flags; 8338 act.sa_restorer = 0; 8339 unlock_user_struct(old_act, arg2, 0); 8340 pact = &act; 8341 } 8342 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8343 if (!is_error(ret) && arg3) { 8344 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 8345 return -TARGET_EFAULT; 8346 old_act->_sa_handler = oact._sa_handler; 8347 old_act->sa_mask = oact.sa_mask.sig[0]; 8348 old_act->sa_flags = oact.sa_flags; 8349 unlock_user_struct(old_act, arg3, 1); 8350 } 8351 #elif defined(TARGET_MIPS) 8352 struct target_sigaction act, oact, *pact, *old_act; 8353 8354 if (arg2) { 8355 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8356 return -TARGET_EFAULT; 8357 act._sa_handler = old_act->_sa_handler; 8358 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 8359 act.sa_flags = old_act->sa_flags; 8360 unlock_user_struct(old_act, arg2, 0); 8361 pact = &act; 8362 } else { 8363 pact = NULL; 8364 } 8365 8366 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8367 8368 if (!is_error(ret) && arg3) { 8369 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 8370 return -TARGET_EFAULT; 8371 old_act->_sa_handler = oact._sa_handler; 8372 old_act->sa_flags = oact.sa_flags; 8373 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 8374 old_act->sa_mask.sig[1] = 0; 8375 old_act->sa_mask.sig[2] = 0; 8376 old_act->sa_mask.sig[3] = 0; 8377 unlock_user_struct(old_act, arg3, 1); 8378 } 8379 #else 8380 struct target_old_sigaction *old_act; 8381 struct target_sigaction act, oact, *pact; 8382 if (arg2) { 8383 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8384 return -TARGET_EFAULT; 8385 act._sa_handler = old_act->_sa_handler; 8386 target_siginitset(&act.sa_mask, old_act->sa_mask); 8387 act.sa_flags = old_act->sa_flags; 8388 act.sa_restorer = old_act->sa_restorer; 8389 #ifdef TARGET_ARCH_HAS_KA_RESTORER 8390 act.ka_restorer = 0; 8391 #endif 8392 unlock_user_struct(old_act, arg2, 0); 8393 pact = &act; 8394 } else { 8395 pact = NULL; 8396 } 8397 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8398 if (!is_error(ret) && arg3) { 8399 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 8400 return -TARGET_EFAULT; 8401 old_act->_sa_handler = oact._sa_handler; 8402 old_act->sa_mask = oact.sa_mask.sig[0]; 8403 old_act->sa_flags = oact.sa_flags; 8404 old_act->sa_restorer = oact.sa_restorer; 8405 unlock_user_struct(old_act, arg3, 1); 8406 } 8407 #endif 8408 } 8409 return ret; 8410 #endif 8411 case TARGET_NR_rt_sigaction: 8412 { 8413 #if defined(TARGET_ALPHA) 8414 /* For Alpha and SPARC this is a 5 argument syscall, with 8415 * a 'restorer' parameter which must be copied into the 8416 * sa_restorer field of the sigaction struct. 8417 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 8418 * and arg5 is the sigsetsize. 8419 * Alpha also has a separate rt_sigaction struct that it uses 8420 * here; SPARC uses the usual sigaction struct. 8421 */ 8422 struct target_rt_sigaction *rt_act; 8423 struct target_sigaction act, oact, *pact = 0; 8424 8425 if (arg4 != sizeof(target_sigset_t)) { 8426 return -TARGET_EINVAL; 8427 } 8428 if (arg2) { 8429 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1)) 8430 return -TARGET_EFAULT; 8431 act._sa_handler = rt_act->_sa_handler; 8432 act.sa_mask = rt_act->sa_mask; 8433 act.sa_flags = rt_act->sa_flags; 8434 act.sa_restorer = arg5; 8435 unlock_user_struct(rt_act, arg2, 0); 8436 pact = &act; 8437 } 8438 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8439 if (!is_error(ret) && arg3) { 8440 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0)) 8441 return -TARGET_EFAULT; 8442 rt_act->_sa_handler = oact._sa_handler; 8443 rt_act->sa_mask = oact.sa_mask; 8444 rt_act->sa_flags = oact.sa_flags; 8445 unlock_user_struct(rt_act, arg3, 1); 8446 } 8447 #else 8448 #ifdef TARGET_SPARC 8449 target_ulong restorer = arg4; 8450 target_ulong sigsetsize = arg5; 8451 #else 8452 target_ulong sigsetsize = arg4; 8453 #endif 8454 struct target_sigaction *act; 8455 struct target_sigaction *oact; 8456 8457 if (sigsetsize != sizeof(target_sigset_t)) { 8458 return -TARGET_EINVAL; 8459 } 8460 if (arg2) { 8461 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) { 8462 return -TARGET_EFAULT; 8463 } 8464 #ifdef TARGET_ARCH_HAS_KA_RESTORER 8465 act->ka_restorer = restorer; 8466 #endif 8467 } else { 8468 act = NULL; 8469 } 8470 if (arg3) { 8471 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 8472 ret = -TARGET_EFAULT; 8473 goto rt_sigaction_fail; 8474 } 8475 } else 8476 oact = NULL; 8477 ret = get_errno(do_sigaction(arg1, act, oact)); 8478 rt_sigaction_fail: 8479 if (act) 8480 unlock_user_struct(act, arg2, 0); 8481 if (oact) 8482 unlock_user_struct(oact, arg3, 1); 8483 #endif 8484 } 8485 return ret; 8486 #ifdef TARGET_NR_sgetmask /* not on alpha */ 8487 case TARGET_NR_sgetmask: 8488 { 8489 sigset_t cur_set; 8490 abi_ulong target_set; 8491 ret = do_sigprocmask(0, NULL, &cur_set); 8492 if (!ret) { 8493 host_to_target_old_sigset(&target_set, &cur_set); 8494 ret = target_set; 8495 } 8496 } 8497 return ret; 8498 #endif 8499 #ifdef TARGET_NR_ssetmask /* not on alpha */ 8500 case TARGET_NR_ssetmask: 8501 { 8502 sigset_t set, oset; 8503 abi_ulong target_set = arg1; 8504 target_to_host_old_sigset(&set, &target_set); 8505 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 8506 if (!ret) { 8507 host_to_target_old_sigset(&target_set, &oset); 8508 ret = target_set; 8509 } 8510 } 8511 return ret; 8512 #endif 8513 #ifdef TARGET_NR_sigprocmask 8514 case TARGET_NR_sigprocmask: 8515 { 8516 #if defined(TARGET_ALPHA) 8517 sigset_t set, oldset; 8518 abi_ulong mask; 8519 int how; 8520 8521 switch (arg1) { 8522 case TARGET_SIG_BLOCK: 8523 how = SIG_BLOCK; 8524 break; 8525 case TARGET_SIG_UNBLOCK: 8526 how = SIG_UNBLOCK; 8527 break; 8528 case TARGET_SIG_SETMASK: 8529 how = SIG_SETMASK; 8530 break; 8531 default: 8532 return -TARGET_EINVAL; 8533 } 8534 mask = arg2; 8535 target_to_host_old_sigset(&set, &mask); 8536 8537 ret = do_sigprocmask(how, &set, &oldset); 8538 if (!is_error(ret)) { 8539 host_to_target_old_sigset(&mask, &oldset); 8540 ret = mask; 8541 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ 8542 } 8543 #else 8544 sigset_t set, oldset, *set_ptr; 8545 int how; 8546 8547 if (arg2) { 8548 switch (arg1) { 8549 case TARGET_SIG_BLOCK: 8550 how = SIG_BLOCK; 8551 break; 8552 case TARGET_SIG_UNBLOCK: 8553 how = SIG_UNBLOCK; 8554 break; 8555 case TARGET_SIG_SETMASK: 8556 how = SIG_SETMASK; 8557 break; 8558 default: 8559 return -TARGET_EINVAL; 8560 } 8561 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 8562 return -TARGET_EFAULT; 8563 target_to_host_old_sigset(&set, p); 8564 unlock_user(p, arg2, 0); 8565 set_ptr = &set; 8566 } else { 8567 how = 0; 8568 set_ptr = NULL; 8569 } 8570 ret = do_sigprocmask(how, set_ptr, &oldset); 8571 if (!is_error(ret) && arg3) { 8572 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 8573 return -TARGET_EFAULT; 8574 host_to_target_old_sigset(p, &oldset); 8575 unlock_user(p, arg3, sizeof(target_sigset_t)); 8576 } 8577 #endif 8578 } 8579 return ret; 8580 #endif 8581 case TARGET_NR_rt_sigprocmask: 8582 { 8583 int how = arg1; 8584 sigset_t set, oldset, *set_ptr; 8585 8586 if (arg4 != sizeof(target_sigset_t)) { 8587 return -TARGET_EINVAL; 8588 } 8589 8590 if (arg2) { 8591 switch(how) { 8592 case TARGET_SIG_BLOCK: 8593 how = SIG_BLOCK; 8594 break; 8595 case TARGET_SIG_UNBLOCK: 8596 how = SIG_UNBLOCK; 8597 break; 8598 case TARGET_SIG_SETMASK: 8599 how = SIG_SETMASK; 8600 break; 8601 default: 8602 return -TARGET_EINVAL; 8603 } 8604 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 8605 return -TARGET_EFAULT; 8606 target_to_host_sigset(&set, p); 8607 unlock_user(p, arg2, 0); 8608 set_ptr = &set; 8609 } else { 8610 how = 0; 8611 set_ptr = NULL; 8612 } 8613 ret = do_sigprocmask(how, set_ptr, &oldset); 8614 if (!is_error(ret) && arg3) { 8615 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 8616 return -TARGET_EFAULT; 8617 host_to_target_sigset(p, &oldset); 8618 unlock_user(p, arg3, sizeof(target_sigset_t)); 8619 } 8620 } 8621 return ret; 8622 #ifdef TARGET_NR_sigpending 8623 case TARGET_NR_sigpending: 8624 { 8625 sigset_t set; 8626 ret = get_errno(sigpending(&set)); 8627 if (!is_error(ret)) { 8628 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 8629 return -TARGET_EFAULT; 8630 host_to_target_old_sigset(p, &set); 8631 unlock_user(p, arg1, sizeof(target_sigset_t)); 8632 } 8633 } 8634 return ret; 8635 #endif 8636 case TARGET_NR_rt_sigpending: 8637 { 8638 sigset_t set; 8639 8640 /* Yes, this check is >, not != like most. We follow the kernel's 8641 * logic and it does it like this because it implements 8642 * NR_sigpending through the same code path, and in that case 8643 * the old_sigset_t is smaller in size. 8644 */ 8645 if (arg2 > sizeof(target_sigset_t)) { 8646 return -TARGET_EINVAL; 8647 } 8648 8649 ret = get_errno(sigpending(&set)); 8650 if (!is_error(ret)) { 8651 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 8652 return -TARGET_EFAULT; 8653 host_to_target_sigset(p, &set); 8654 unlock_user(p, arg1, sizeof(target_sigset_t)); 8655 } 8656 } 8657 return ret; 8658 #ifdef TARGET_NR_sigsuspend 8659 case TARGET_NR_sigsuspend: 8660 { 8661 TaskState *ts = cpu->opaque; 8662 #if defined(TARGET_ALPHA) 8663 abi_ulong mask = arg1; 8664 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask); 8665 #else 8666 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 8667 return -TARGET_EFAULT; 8668 target_to_host_old_sigset(&ts->sigsuspend_mask, p); 8669 unlock_user(p, arg1, 0); 8670 #endif 8671 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 8672 SIGSET_T_SIZE)); 8673 if (ret != -TARGET_ERESTARTSYS) { 8674 ts->in_sigsuspend = 1; 8675 } 8676 } 8677 return ret; 8678 #endif 8679 case TARGET_NR_rt_sigsuspend: 8680 { 8681 TaskState *ts = cpu->opaque; 8682 8683 if (arg2 != sizeof(target_sigset_t)) { 8684 return -TARGET_EINVAL; 8685 } 8686 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 8687 return -TARGET_EFAULT; 8688 target_to_host_sigset(&ts->sigsuspend_mask, p); 8689 unlock_user(p, arg1, 0); 8690 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 8691 SIGSET_T_SIZE)); 8692 if (ret != -TARGET_ERESTARTSYS) { 8693 ts->in_sigsuspend = 1; 8694 } 8695 } 8696 return ret; 8697 #ifdef TARGET_NR_rt_sigtimedwait 8698 case TARGET_NR_rt_sigtimedwait: 8699 { 8700 sigset_t set; 8701 struct timespec uts, *puts; 8702 siginfo_t uinfo; 8703 8704 if (arg4 != sizeof(target_sigset_t)) { 8705 return -TARGET_EINVAL; 8706 } 8707 8708 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 8709 return -TARGET_EFAULT; 8710 target_to_host_sigset(&set, p); 8711 unlock_user(p, arg1, 0); 8712 if (arg3) { 8713 puts = &uts; 8714 target_to_host_timespec(puts, arg3); 8715 } else { 8716 puts = NULL; 8717 } 8718 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 8719 SIGSET_T_SIZE)); 8720 if (!is_error(ret)) { 8721 if (arg2) { 8722 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 8723 0); 8724 if (!p) { 8725 return -TARGET_EFAULT; 8726 } 8727 host_to_target_siginfo(p, &uinfo); 8728 unlock_user(p, arg2, sizeof(target_siginfo_t)); 8729 } 8730 ret = host_to_target_signal(ret); 8731 } 8732 } 8733 return ret; 8734 #endif 8735 case TARGET_NR_rt_sigqueueinfo: 8736 { 8737 siginfo_t uinfo; 8738 8739 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 8740 if (!p) { 8741 return -TARGET_EFAULT; 8742 } 8743 target_to_host_siginfo(&uinfo, p); 8744 unlock_user(p, arg3, 0); 8745 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); 8746 } 8747 return ret; 8748 case TARGET_NR_rt_tgsigqueueinfo: 8749 { 8750 siginfo_t uinfo; 8751 8752 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 8753 if (!p) { 8754 return -TARGET_EFAULT; 8755 } 8756 target_to_host_siginfo(&uinfo, p); 8757 unlock_user(p, arg4, 0); 8758 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo)); 8759 } 8760 return ret; 8761 #ifdef TARGET_NR_sigreturn 8762 case TARGET_NR_sigreturn: 8763 if (block_signals()) { 8764 return -TARGET_ERESTARTSYS; 8765 } 8766 return do_sigreturn(cpu_env); 8767 #endif 8768 case TARGET_NR_rt_sigreturn: 8769 if (block_signals()) { 8770 return -TARGET_ERESTARTSYS; 8771 } 8772 return do_rt_sigreturn(cpu_env); 8773 case TARGET_NR_sethostname: 8774 if (!(p = lock_user_string(arg1))) 8775 return -TARGET_EFAULT; 8776 ret = get_errno(sethostname(p, arg2)); 8777 unlock_user(p, arg1, 0); 8778 return ret; 8779 #ifdef TARGET_NR_setrlimit 8780 case TARGET_NR_setrlimit: 8781 { 8782 int resource = target_to_host_resource(arg1); 8783 struct target_rlimit *target_rlim; 8784 struct rlimit rlim; 8785 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 8786 return -TARGET_EFAULT; 8787 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 8788 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 8789 unlock_user_struct(target_rlim, arg2, 0); 8790 /* 8791 * If we just passed through resource limit settings for memory then 8792 * they would also apply to QEMU's own allocations, and QEMU will 8793 * crash or hang or die if its allocations fail. Ideally we would 8794 * track the guest allocations in QEMU and apply the limits ourselves. 8795 * For now, just tell the guest the call succeeded but don't actually 8796 * limit anything. 8797 */ 8798 if (resource != RLIMIT_AS && 8799 resource != RLIMIT_DATA && 8800 resource != RLIMIT_STACK) { 8801 return get_errno(setrlimit(resource, &rlim)); 8802 } else { 8803 return 0; 8804 } 8805 } 8806 #endif 8807 #ifdef TARGET_NR_getrlimit 8808 case TARGET_NR_getrlimit: 8809 { 8810 int resource = target_to_host_resource(arg1); 8811 struct target_rlimit *target_rlim; 8812 struct rlimit rlim; 8813 8814 ret = get_errno(getrlimit(resource, &rlim)); 8815 if (!is_error(ret)) { 8816 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 8817 return -TARGET_EFAULT; 8818 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 8819 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 8820 unlock_user_struct(target_rlim, arg2, 1); 8821 } 8822 } 8823 return ret; 8824 #endif 8825 case TARGET_NR_getrusage: 8826 { 8827 struct rusage rusage; 8828 ret = get_errno(getrusage(arg1, &rusage)); 8829 if (!is_error(ret)) { 8830 ret = host_to_target_rusage(arg2, &rusage); 8831 } 8832 } 8833 return ret; 8834 #if defined(TARGET_NR_gettimeofday) 8835 case TARGET_NR_gettimeofday: 8836 { 8837 struct timeval tv; 8838 struct timezone tz; 8839 8840 ret = get_errno(gettimeofday(&tv, &tz)); 8841 if (!is_error(ret)) { 8842 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 8843 return -TARGET_EFAULT; 8844 } 8845 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 8846 return -TARGET_EFAULT; 8847 } 8848 } 8849 } 8850 return ret; 8851 #endif 8852 #if defined(TARGET_NR_settimeofday) 8853 case TARGET_NR_settimeofday: 8854 { 8855 struct timeval tv, *ptv = NULL; 8856 struct timezone tz, *ptz = NULL; 8857 8858 if (arg1) { 8859 if (copy_from_user_timeval(&tv, arg1)) { 8860 return -TARGET_EFAULT; 8861 } 8862 ptv = &tv; 8863 } 8864 8865 if (arg2) { 8866 if (copy_from_user_timezone(&tz, arg2)) { 8867 return -TARGET_EFAULT; 8868 } 8869 ptz = &tz; 8870 } 8871 8872 return get_errno(settimeofday(ptv, ptz)); 8873 } 8874 #endif 8875 #if defined(TARGET_NR_select) 8876 case TARGET_NR_select: 8877 #if defined(TARGET_WANT_NI_OLD_SELECT) 8878 /* some architectures used to have old_select here 8879 * but now ENOSYS it. 8880 */ 8881 ret = -TARGET_ENOSYS; 8882 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 8883 ret = do_old_select(arg1); 8884 #else 8885 ret = do_select(arg1, arg2, arg3, arg4, arg5); 8886 #endif 8887 return ret; 8888 #endif 8889 #ifdef TARGET_NR_pselect6 8890 case TARGET_NR_pselect6: 8891 { 8892 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 8893 fd_set rfds, wfds, efds; 8894 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 8895 struct timespec ts, *ts_ptr; 8896 8897 /* 8898 * The 6th arg is actually two args smashed together, 8899 * so we cannot use the C library. 8900 */ 8901 sigset_t set; 8902 struct { 8903 sigset_t *set; 8904 size_t size; 8905 } sig, *sig_ptr; 8906 8907 abi_ulong arg_sigset, arg_sigsize, *arg7; 8908 target_sigset_t *target_sigset; 8909 8910 n = arg1; 8911 rfd_addr = arg2; 8912 wfd_addr = arg3; 8913 efd_addr = arg4; 8914 ts_addr = arg5; 8915 8916 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 8917 if (ret) { 8918 return ret; 8919 } 8920 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 8921 if (ret) { 8922 return ret; 8923 } 8924 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 8925 if (ret) { 8926 return ret; 8927 } 8928 8929 /* 8930 * This takes a timespec, and not a timeval, so we cannot 8931 * use the do_select() helper ... 8932 */ 8933 if (ts_addr) { 8934 if (target_to_host_timespec(&ts, ts_addr)) { 8935 return -TARGET_EFAULT; 8936 } 8937 ts_ptr = &ts; 8938 } else { 8939 ts_ptr = NULL; 8940 } 8941 8942 /* Extract the two packed args for the sigset */ 8943 if (arg6) { 8944 sig_ptr = &sig; 8945 sig.size = SIGSET_T_SIZE; 8946 8947 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 8948 if (!arg7) { 8949 return -TARGET_EFAULT; 8950 } 8951 arg_sigset = tswapal(arg7[0]); 8952 arg_sigsize = tswapal(arg7[1]); 8953 unlock_user(arg7, arg6, 0); 8954 8955 if (arg_sigset) { 8956 sig.set = &set; 8957 if (arg_sigsize != sizeof(*target_sigset)) { 8958 /* Like the kernel, we enforce correct size sigsets */ 8959 return -TARGET_EINVAL; 8960 } 8961 target_sigset = lock_user(VERIFY_READ, arg_sigset, 8962 sizeof(*target_sigset), 1); 8963 if (!target_sigset) { 8964 return -TARGET_EFAULT; 8965 } 8966 target_to_host_sigset(&set, target_sigset); 8967 unlock_user(target_sigset, arg_sigset, 0); 8968 } else { 8969 sig.set = NULL; 8970 } 8971 } else { 8972 sig_ptr = NULL; 8973 } 8974 8975 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 8976 ts_ptr, sig_ptr)); 8977 8978 if (!is_error(ret)) { 8979 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 8980 return -TARGET_EFAULT; 8981 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 8982 return -TARGET_EFAULT; 8983 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 8984 return -TARGET_EFAULT; 8985 8986 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) 8987 return -TARGET_EFAULT; 8988 } 8989 } 8990 return ret; 8991 #endif 8992 #ifdef TARGET_NR_symlink 8993 case TARGET_NR_symlink: 8994 { 8995 void *p2; 8996 p = lock_user_string(arg1); 8997 p2 = lock_user_string(arg2); 8998 if (!p || !p2) 8999 ret = -TARGET_EFAULT; 9000 else 9001 ret = get_errno(symlink(p, p2)); 9002 unlock_user(p2, arg2, 0); 9003 unlock_user(p, arg1, 0); 9004 } 9005 return ret; 9006 #endif 9007 #if defined(TARGET_NR_symlinkat) 9008 case TARGET_NR_symlinkat: 9009 { 9010 void *p2; 9011 p = lock_user_string(arg1); 9012 p2 = lock_user_string(arg3); 9013 if (!p || !p2) 9014 ret = -TARGET_EFAULT; 9015 else 9016 ret = get_errno(symlinkat(p, arg2, p2)); 9017 unlock_user(p2, arg3, 0); 9018 unlock_user(p, arg1, 0); 9019 } 9020 return ret; 9021 #endif 9022 #ifdef TARGET_NR_readlink 9023 case TARGET_NR_readlink: 9024 { 9025 void *p2; 9026 p = lock_user_string(arg1); 9027 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9028 if (!p || !p2) { 9029 ret = -TARGET_EFAULT; 9030 } else if (!arg3) { 9031 /* Short circuit this for the magic exe check. */ 9032 ret = -TARGET_EINVAL; 9033 } else if (is_proc_myself((const char *)p, "exe")) { 9034 char real[PATH_MAX], *temp; 9035 temp = realpath(exec_path, real); 9036 /* Return value is # of bytes that we wrote to the buffer. */ 9037 if (temp == NULL) { 9038 ret = get_errno(-1); 9039 } else { 9040 /* Don't worry about sign mismatch as earlier mapping 9041 * logic would have thrown a bad address error. */ 9042 ret = MIN(strlen(real), arg3); 9043 /* We cannot NUL terminate the string. */ 9044 memcpy(p2, real, ret); 9045 } 9046 } else { 9047 ret = get_errno(readlink(path(p), p2, arg3)); 9048 } 9049 unlock_user(p2, arg2, ret); 9050 unlock_user(p, arg1, 0); 9051 } 9052 return ret; 9053 #endif 9054 #if defined(TARGET_NR_readlinkat) 9055 case TARGET_NR_readlinkat: 9056 { 9057 void *p2; 9058 p = lock_user_string(arg2); 9059 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9060 if (!p || !p2) { 9061 ret = -TARGET_EFAULT; 9062 } else if (is_proc_myself((const char *)p, "exe")) { 9063 char real[PATH_MAX], *temp; 9064 temp = realpath(exec_path, real); 9065 ret = temp == NULL ? get_errno(-1) : strlen(real) ; 9066 snprintf((char *)p2, arg4, "%s", real); 9067 } else { 9068 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9069 } 9070 unlock_user(p2, arg3, ret); 9071 unlock_user(p, arg2, 0); 9072 } 9073 return ret; 9074 #endif 9075 #ifdef TARGET_NR_swapon 9076 case TARGET_NR_swapon: 9077 if (!(p = lock_user_string(arg1))) 9078 return -TARGET_EFAULT; 9079 ret = get_errno(swapon(p, arg2)); 9080 unlock_user(p, arg1, 0); 9081 return ret; 9082 #endif 9083 case TARGET_NR_reboot: 9084 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9085 /* arg4 must be ignored in all other cases */ 9086 p = lock_user_string(arg4); 9087 if (!p) { 9088 return -TARGET_EFAULT; 9089 } 9090 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9091 unlock_user(p, arg4, 0); 9092 } else { 9093 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9094 } 9095 return ret; 9096 #ifdef TARGET_NR_mmap 9097 case TARGET_NR_mmap: 9098 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9099 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9100 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9101 || defined(TARGET_S390X) 9102 { 9103 abi_ulong *v; 9104 abi_ulong v1, v2, v3, v4, v5, v6; 9105 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9106 return -TARGET_EFAULT; 9107 v1 = tswapal(v[0]); 9108 v2 = tswapal(v[1]); 9109 v3 = tswapal(v[2]); 9110 v4 = tswapal(v[3]); 9111 v5 = tswapal(v[4]); 9112 v6 = tswapal(v[5]); 9113 unlock_user(v, arg1, 0); 9114 ret = get_errno(target_mmap(v1, v2, v3, 9115 target_to_host_bitmask(v4, mmap_flags_tbl), 9116 v5, v6)); 9117 } 9118 #else 9119 ret = get_errno(target_mmap(arg1, arg2, arg3, 9120 target_to_host_bitmask(arg4, mmap_flags_tbl), 9121 arg5, 9122 arg6)); 9123 #endif 9124 return ret; 9125 #endif 9126 #ifdef TARGET_NR_mmap2 9127 case TARGET_NR_mmap2: 9128 #ifndef MMAP_SHIFT 9129 #define MMAP_SHIFT 12 9130 #endif 9131 ret = target_mmap(arg1, arg2, arg3, 9132 target_to_host_bitmask(arg4, mmap_flags_tbl), 9133 arg5, arg6 << MMAP_SHIFT); 9134 return get_errno(ret); 9135 #endif 9136 case TARGET_NR_munmap: 9137 return get_errno(target_munmap(arg1, arg2)); 9138 case TARGET_NR_mprotect: 9139 { 9140 TaskState *ts = cpu->opaque; 9141 /* Special hack to detect libc making the stack executable. */ 9142 if ((arg3 & PROT_GROWSDOWN) 9143 && arg1 >= ts->info->stack_limit 9144 && arg1 <= ts->info->start_stack) { 9145 arg3 &= ~PROT_GROWSDOWN; 9146 arg2 = arg2 + arg1 - ts->info->stack_limit; 9147 arg1 = ts->info->stack_limit; 9148 } 9149 } 9150 return get_errno(target_mprotect(arg1, arg2, arg3)); 9151 #ifdef TARGET_NR_mremap 9152 case TARGET_NR_mremap: 9153 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 9154 #endif 9155 /* ??? msync/mlock/munlock are broken for softmmu. */ 9156 #ifdef TARGET_NR_msync 9157 case TARGET_NR_msync: 9158 return get_errno(msync(g2h(arg1), arg2, arg3)); 9159 #endif 9160 #ifdef TARGET_NR_mlock 9161 case TARGET_NR_mlock: 9162 return get_errno(mlock(g2h(arg1), arg2)); 9163 #endif 9164 #ifdef TARGET_NR_munlock 9165 case TARGET_NR_munlock: 9166 return get_errno(munlock(g2h(arg1), arg2)); 9167 #endif 9168 #ifdef TARGET_NR_mlockall 9169 case TARGET_NR_mlockall: 9170 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 9171 #endif 9172 #ifdef TARGET_NR_munlockall 9173 case TARGET_NR_munlockall: 9174 return get_errno(munlockall()); 9175 #endif 9176 #ifdef TARGET_NR_truncate 9177 case TARGET_NR_truncate: 9178 if (!(p = lock_user_string(arg1))) 9179 return -TARGET_EFAULT; 9180 ret = get_errno(truncate(p, arg2)); 9181 unlock_user(p, arg1, 0); 9182 return ret; 9183 #endif 9184 #ifdef TARGET_NR_ftruncate 9185 case TARGET_NR_ftruncate: 9186 return get_errno(ftruncate(arg1, arg2)); 9187 #endif 9188 case TARGET_NR_fchmod: 9189 return get_errno(fchmod(arg1, arg2)); 9190 #if defined(TARGET_NR_fchmodat) 9191 case TARGET_NR_fchmodat: 9192 if (!(p = lock_user_string(arg2))) 9193 return -TARGET_EFAULT; 9194 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 9195 unlock_user(p, arg2, 0); 9196 return ret; 9197 #endif 9198 case TARGET_NR_getpriority: 9199 /* Note that negative values are valid for getpriority, so we must 9200 differentiate based on errno settings. */ 9201 errno = 0; 9202 ret = getpriority(arg1, arg2); 9203 if (ret == -1 && errno != 0) { 9204 return -host_to_target_errno(errno); 9205 } 9206 #ifdef TARGET_ALPHA 9207 /* Return value is the unbiased priority. Signal no error. */ 9208 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; 9209 #else 9210 /* Return value is a biased priority to avoid negative numbers. */ 9211 ret = 20 - ret; 9212 #endif 9213 return ret; 9214 case TARGET_NR_setpriority: 9215 return get_errno(setpriority(arg1, arg2, arg3)); 9216 #ifdef TARGET_NR_statfs 9217 case TARGET_NR_statfs: 9218 if (!(p = lock_user_string(arg1))) { 9219 return -TARGET_EFAULT; 9220 } 9221 ret = get_errno(statfs(path(p), &stfs)); 9222 unlock_user(p, arg1, 0); 9223 convert_statfs: 9224 if (!is_error(ret)) { 9225 struct target_statfs *target_stfs; 9226 9227 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 9228 return -TARGET_EFAULT; 9229 __put_user(stfs.f_type, &target_stfs->f_type); 9230 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9231 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9232 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9233 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9234 __put_user(stfs.f_files, &target_stfs->f_files); 9235 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9236 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9237 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9238 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9239 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9240 #ifdef _STATFS_F_FLAGS 9241 __put_user(stfs.f_flags, &target_stfs->f_flags); 9242 #else 9243 __put_user(0, &target_stfs->f_flags); 9244 #endif 9245 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9246 unlock_user_struct(target_stfs, arg2, 1); 9247 } 9248 return ret; 9249 #endif 9250 #ifdef TARGET_NR_fstatfs 9251 case TARGET_NR_fstatfs: 9252 ret = get_errno(fstatfs(arg1, &stfs)); 9253 goto convert_statfs; 9254 #endif 9255 #ifdef TARGET_NR_statfs64 9256 case TARGET_NR_statfs64: 9257 if (!(p = lock_user_string(arg1))) { 9258 return -TARGET_EFAULT; 9259 } 9260 ret = get_errno(statfs(path(p), &stfs)); 9261 unlock_user(p, arg1, 0); 9262 convert_statfs64: 9263 if (!is_error(ret)) { 9264 struct target_statfs64 *target_stfs; 9265 9266 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 9267 return -TARGET_EFAULT; 9268 __put_user(stfs.f_type, &target_stfs->f_type); 9269 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9270 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9271 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9272 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9273 __put_user(stfs.f_files, &target_stfs->f_files); 9274 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9275 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9276 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9277 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9278 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9279 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9280 unlock_user_struct(target_stfs, arg3, 1); 9281 } 9282 return ret; 9283 case TARGET_NR_fstatfs64: 9284 ret = get_errno(fstatfs(arg1, &stfs)); 9285 goto convert_statfs64; 9286 #endif 9287 #ifdef TARGET_NR_socketcall 9288 case TARGET_NR_socketcall: 9289 return do_socketcall(arg1, arg2); 9290 #endif 9291 #ifdef TARGET_NR_accept 9292 case TARGET_NR_accept: 9293 return do_accept4(arg1, arg2, arg3, 0); 9294 #endif 9295 #ifdef TARGET_NR_accept4 9296 case TARGET_NR_accept4: 9297 return do_accept4(arg1, arg2, arg3, arg4); 9298 #endif 9299 #ifdef TARGET_NR_bind 9300 case TARGET_NR_bind: 9301 return do_bind(arg1, arg2, arg3); 9302 #endif 9303 #ifdef TARGET_NR_connect 9304 case TARGET_NR_connect: 9305 return do_connect(arg1, arg2, arg3); 9306 #endif 9307 #ifdef TARGET_NR_getpeername 9308 case TARGET_NR_getpeername: 9309 return do_getpeername(arg1, arg2, arg3); 9310 #endif 9311 #ifdef TARGET_NR_getsockname 9312 case TARGET_NR_getsockname: 9313 return do_getsockname(arg1, arg2, arg3); 9314 #endif 9315 #ifdef TARGET_NR_getsockopt 9316 case TARGET_NR_getsockopt: 9317 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 9318 #endif 9319 #ifdef TARGET_NR_listen 9320 case TARGET_NR_listen: 9321 return get_errno(listen(arg1, arg2)); 9322 #endif 9323 #ifdef TARGET_NR_recv 9324 case TARGET_NR_recv: 9325 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 9326 #endif 9327 #ifdef TARGET_NR_recvfrom 9328 case TARGET_NR_recvfrom: 9329 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 9330 #endif 9331 #ifdef TARGET_NR_recvmsg 9332 case TARGET_NR_recvmsg: 9333 return do_sendrecvmsg(arg1, arg2, arg3, 0); 9334 #endif 9335 #ifdef TARGET_NR_send 9336 case TARGET_NR_send: 9337 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 9338 #endif 9339 #ifdef TARGET_NR_sendmsg 9340 case TARGET_NR_sendmsg: 9341 return do_sendrecvmsg(arg1, arg2, arg3, 1); 9342 #endif 9343 #ifdef TARGET_NR_sendmmsg 9344 case TARGET_NR_sendmmsg: 9345 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 9346 #endif 9347 #ifdef TARGET_NR_recvmmsg 9348 case TARGET_NR_recvmmsg: 9349 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 9350 #endif 9351 #ifdef TARGET_NR_sendto 9352 case TARGET_NR_sendto: 9353 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 9354 #endif 9355 #ifdef TARGET_NR_shutdown 9356 case TARGET_NR_shutdown: 9357 return get_errno(shutdown(arg1, arg2)); 9358 #endif 9359 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 9360 case TARGET_NR_getrandom: 9361 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 9362 if (!p) { 9363 return -TARGET_EFAULT; 9364 } 9365 ret = get_errno(getrandom(p, arg2, arg3)); 9366 unlock_user(p, arg1, ret); 9367 return ret; 9368 #endif 9369 #ifdef TARGET_NR_socket 9370 case TARGET_NR_socket: 9371 return do_socket(arg1, arg2, arg3); 9372 #endif 9373 #ifdef TARGET_NR_socketpair 9374 case TARGET_NR_socketpair: 9375 return do_socketpair(arg1, arg2, arg3, arg4); 9376 #endif 9377 #ifdef TARGET_NR_setsockopt 9378 case TARGET_NR_setsockopt: 9379 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 9380 #endif 9381 #if defined(TARGET_NR_syslog) 9382 case TARGET_NR_syslog: 9383 { 9384 int len = arg2; 9385 9386 switch (arg1) { 9387 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 9388 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 9389 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 9390 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 9391 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 9392 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 9393 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 9394 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 9395 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 9396 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 9397 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 9398 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 9399 { 9400 if (len < 0) { 9401 return -TARGET_EINVAL; 9402 } 9403 if (len == 0) { 9404 return 0; 9405 } 9406 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9407 if (!p) { 9408 return -TARGET_EFAULT; 9409 } 9410 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 9411 unlock_user(p, arg2, arg3); 9412 } 9413 return ret; 9414 default: 9415 return -TARGET_EINVAL; 9416 } 9417 } 9418 break; 9419 #endif 9420 case TARGET_NR_setitimer: 9421 { 9422 struct itimerval value, ovalue, *pvalue; 9423 9424 if (arg2) { 9425 pvalue = &value; 9426 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 9427 || copy_from_user_timeval(&pvalue->it_value, 9428 arg2 + sizeof(struct target_timeval))) 9429 return -TARGET_EFAULT; 9430 } else { 9431 pvalue = NULL; 9432 } 9433 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 9434 if (!is_error(ret) && arg3) { 9435 if (copy_to_user_timeval(arg3, 9436 &ovalue.it_interval) 9437 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 9438 &ovalue.it_value)) 9439 return -TARGET_EFAULT; 9440 } 9441 } 9442 return ret; 9443 case TARGET_NR_getitimer: 9444 { 9445 struct itimerval value; 9446 9447 ret = get_errno(getitimer(arg1, &value)); 9448 if (!is_error(ret) && arg2) { 9449 if (copy_to_user_timeval(arg2, 9450 &value.it_interval) 9451 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 9452 &value.it_value)) 9453 return -TARGET_EFAULT; 9454 } 9455 } 9456 return ret; 9457 #ifdef TARGET_NR_stat 9458 case TARGET_NR_stat: 9459 if (!(p = lock_user_string(arg1))) { 9460 return -TARGET_EFAULT; 9461 } 9462 ret = get_errno(stat(path(p), &st)); 9463 unlock_user(p, arg1, 0); 9464 goto do_stat; 9465 #endif 9466 #ifdef TARGET_NR_lstat 9467 case TARGET_NR_lstat: 9468 if (!(p = lock_user_string(arg1))) { 9469 return -TARGET_EFAULT; 9470 } 9471 ret = get_errno(lstat(path(p), &st)); 9472 unlock_user(p, arg1, 0); 9473 goto do_stat; 9474 #endif 9475 #ifdef TARGET_NR_fstat 9476 case TARGET_NR_fstat: 9477 { 9478 ret = get_errno(fstat(arg1, &st)); 9479 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 9480 do_stat: 9481 #endif 9482 if (!is_error(ret)) { 9483 struct target_stat *target_st; 9484 9485 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 9486 return -TARGET_EFAULT; 9487 memset(target_st, 0, sizeof(*target_st)); 9488 __put_user(st.st_dev, &target_st->st_dev); 9489 __put_user(st.st_ino, &target_st->st_ino); 9490 __put_user(st.st_mode, &target_st->st_mode); 9491 __put_user(st.st_uid, &target_st->st_uid); 9492 __put_user(st.st_gid, &target_st->st_gid); 9493 __put_user(st.st_nlink, &target_st->st_nlink); 9494 __put_user(st.st_rdev, &target_st->st_rdev); 9495 __put_user(st.st_size, &target_st->st_size); 9496 __put_user(st.st_blksize, &target_st->st_blksize); 9497 __put_user(st.st_blocks, &target_st->st_blocks); 9498 __put_user(st.st_atime, &target_st->target_st_atime); 9499 __put_user(st.st_mtime, &target_st->target_st_mtime); 9500 __put_user(st.st_ctime, &target_st->target_st_ctime); 9501 #if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \ 9502 defined(TARGET_STAT_HAVE_NSEC) 9503 __put_user(st.st_atim.tv_nsec, 9504 &target_st->target_st_atime_nsec); 9505 __put_user(st.st_mtim.tv_nsec, 9506 &target_st->target_st_mtime_nsec); 9507 __put_user(st.st_ctim.tv_nsec, 9508 &target_st->target_st_ctime_nsec); 9509 #endif 9510 unlock_user_struct(target_st, arg2, 1); 9511 } 9512 } 9513 return ret; 9514 #endif 9515 case TARGET_NR_vhangup: 9516 return get_errno(vhangup()); 9517 #ifdef TARGET_NR_syscall 9518 case TARGET_NR_syscall: 9519 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 9520 arg6, arg7, arg8, 0); 9521 #endif 9522 #if defined(TARGET_NR_wait4) 9523 case TARGET_NR_wait4: 9524 { 9525 int status; 9526 abi_long status_ptr = arg2; 9527 struct rusage rusage, *rusage_ptr; 9528 abi_ulong target_rusage = arg4; 9529 abi_long rusage_err; 9530 if (target_rusage) 9531 rusage_ptr = &rusage; 9532 else 9533 rusage_ptr = NULL; 9534 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 9535 if (!is_error(ret)) { 9536 if (status_ptr && ret) { 9537 status = host_to_target_waitstatus(status); 9538 if (put_user_s32(status, status_ptr)) 9539 return -TARGET_EFAULT; 9540 } 9541 if (target_rusage) { 9542 rusage_err = host_to_target_rusage(target_rusage, &rusage); 9543 if (rusage_err) { 9544 ret = rusage_err; 9545 } 9546 } 9547 } 9548 } 9549 return ret; 9550 #endif 9551 #ifdef TARGET_NR_swapoff 9552 case TARGET_NR_swapoff: 9553 if (!(p = lock_user_string(arg1))) 9554 return -TARGET_EFAULT; 9555 ret = get_errno(swapoff(p)); 9556 unlock_user(p, arg1, 0); 9557 return ret; 9558 #endif 9559 case TARGET_NR_sysinfo: 9560 { 9561 struct target_sysinfo *target_value; 9562 struct sysinfo value; 9563 ret = get_errno(sysinfo(&value)); 9564 if (!is_error(ret) && arg1) 9565 { 9566 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 9567 return -TARGET_EFAULT; 9568 __put_user(value.uptime, &target_value->uptime); 9569 __put_user(value.loads[0], &target_value->loads[0]); 9570 __put_user(value.loads[1], &target_value->loads[1]); 9571 __put_user(value.loads[2], &target_value->loads[2]); 9572 __put_user(value.totalram, &target_value->totalram); 9573 __put_user(value.freeram, &target_value->freeram); 9574 __put_user(value.sharedram, &target_value->sharedram); 9575 __put_user(value.bufferram, &target_value->bufferram); 9576 __put_user(value.totalswap, &target_value->totalswap); 9577 __put_user(value.freeswap, &target_value->freeswap); 9578 __put_user(value.procs, &target_value->procs); 9579 __put_user(value.totalhigh, &target_value->totalhigh); 9580 __put_user(value.freehigh, &target_value->freehigh); 9581 __put_user(value.mem_unit, &target_value->mem_unit); 9582 unlock_user_struct(target_value, arg1, 1); 9583 } 9584 } 9585 return ret; 9586 #ifdef TARGET_NR_ipc 9587 case TARGET_NR_ipc: 9588 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 9589 #endif 9590 #ifdef TARGET_NR_semget 9591 case TARGET_NR_semget: 9592 return get_errno(semget(arg1, arg2, arg3)); 9593 #endif 9594 #ifdef TARGET_NR_semop 9595 case TARGET_NR_semop: 9596 return do_semop(arg1, arg2, arg3); 9597 #endif 9598 #ifdef TARGET_NR_semctl 9599 case TARGET_NR_semctl: 9600 return do_semctl(arg1, arg2, arg3, arg4); 9601 #endif 9602 #ifdef TARGET_NR_msgctl 9603 case TARGET_NR_msgctl: 9604 return do_msgctl(arg1, arg2, arg3); 9605 #endif 9606 #ifdef TARGET_NR_msgget 9607 case TARGET_NR_msgget: 9608 return get_errno(msgget(arg1, arg2)); 9609 #endif 9610 #ifdef TARGET_NR_msgrcv 9611 case TARGET_NR_msgrcv: 9612 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 9613 #endif 9614 #ifdef TARGET_NR_msgsnd 9615 case TARGET_NR_msgsnd: 9616 return do_msgsnd(arg1, arg2, arg3, arg4); 9617 #endif 9618 #ifdef TARGET_NR_shmget 9619 case TARGET_NR_shmget: 9620 return get_errno(shmget(arg1, arg2, arg3)); 9621 #endif 9622 #ifdef TARGET_NR_shmctl 9623 case TARGET_NR_shmctl: 9624 return do_shmctl(arg1, arg2, arg3); 9625 #endif 9626 #ifdef TARGET_NR_shmat 9627 case TARGET_NR_shmat: 9628 return do_shmat(cpu_env, arg1, arg2, arg3); 9629 #endif 9630 #ifdef TARGET_NR_shmdt 9631 case TARGET_NR_shmdt: 9632 return do_shmdt(arg1); 9633 #endif 9634 case TARGET_NR_fsync: 9635 return get_errno(fsync(arg1)); 9636 case TARGET_NR_clone: 9637 /* Linux manages to have three different orderings for its 9638 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 9639 * match the kernel's CONFIG_CLONE_* settings. 9640 * Microblaze is further special in that it uses a sixth 9641 * implicit argument to clone for the TLS pointer. 9642 */ 9643 #if defined(TARGET_MICROBLAZE) 9644 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 9645 #elif defined(TARGET_CLONE_BACKWARDS) 9646 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 9647 #elif defined(TARGET_CLONE_BACKWARDS2) 9648 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 9649 #else 9650 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 9651 #endif 9652 return ret; 9653 #ifdef __NR_exit_group 9654 /* new thread calls */ 9655 case TARGET_NR_exit_group: 9656 preexit_cleanup(cpu_env, arg1); 9657 return get_errno(exit_group(arg1)); 9658 #endif 9659 case TARGET_NR_setdomainname: 9660 if (!(p = lock_user_string(arg1))) 9661 return -TARGET_EFAULT; 9662 ret = get_errno(setdomainname(p, arg2)); 9663 unlock_user(p, arg1, 0); 9664 return ret; 9665 case TARGET_NR_uname: 9666 /* no need to transcode because we use the linux syscall */ 9667 { 9668 struct new_utsname * buf; 9669 9670 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 9671 return -TARGET_EFAULT; 9672 ret = get_errno(sys_uname(buf)); 9673 if (!is_error(ret)) { 9674 /* Overwrite the native machine name with whatever is being 9675 emulated. */ 9676 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 9677 sizeof(buf->machine)); 9678 /* Allow the user to override the reported release. */ 9679 if (qemu_uname_release && *qemu_uname_release) { 9680 g_strlcpy(buf->release, qemu_uname_release, 9681 sizeof(buf->release)); 9682 } 9683 } 9684 unlock_user_struct(buf, arg1, 1); 9685 } 9686 return ret; 9687 #ifdef TARGET_I386 9688 case TARGET_NR_modify_ldt: 9689 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 9690 #if !defined(TARGET_X86_64) 9691 case TARGET_NR_vm86: 9692 return do_vm86(cpu_env, arg1, arg2); 9693 #endif 9694 #endif 9695 #if defined(TARGET_NR_adjtimex) 9696 case TARGET_NR_adjtimex: 9697 { 9698 struct timex host_buf; 9699 9700 if (target_to_host_timex(&host_buf, arg1) != 0) { 9701 return -TARGET_EFAULT; 9702 } 9703 ret = get_errno(adjtimex(&host_buf)); 9704 if (!is_error(ret)) { 9705 if (host_to_target_timex(arg1, &host_buf) != 0) { 9706 return -TARGET_EFAULT; 9707 } 9708 } 9709 } 9710 return ret; 9711 #endif 9712 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 9713 case TARGET_NR_clock_adjtime: 9714 { 9715 struct timex htx, *phtx = &htx; 9716 9717 if (target_to_host_timex(phtx, arg2) != 0) { 9718 return -TARGET_EFAULT; 9719 } 9720 ret = get_errno(clock_adjtime(arg1, phtx)); 9721 if (!is_error(ret) && phtx) { 9722 if (host_to_target_timex(arg2, phtx) != 0) { 9723 return -TARGET_EFAULT; 9724 } 9725 } 9726 } 9727 return ret; 9728 #endif 9729 case TARGET_NR_getpgid: 9730 return get_errno(getpgid(arg1)); 9731 case TARGET_NR_fchdir: 9732 return get_errno(fchdir(arg1)); 9733 case TARGET_NR_personality: 9734 return get_errno(personality(arg1)); 9735 #ifdef TARGET_NR__llseek /* Not on alpha */ 9736 case TARGET_NR__llseek: 9737 { 9738 int64_t res; 9739 #if !defined(__NR_llseek) 9740 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 9741 if (res == -1) { 9742 ret = get_errno(res); 9743 } else { 9744 ret = 0; 9745 } 9746 #else 9747 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 9748 #endif 9749 if ((ret == 0) && put_user_s64(res, arg4)) { 9750 return -TARGET_EFAULT; 9751 } 9752 } 9753 return ret; 9754 #endif 9755 #ifdef TARGET_NR_getdents 9756 case TARGET_NR_getdents: 9757 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 9758 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 9759 { 9760 struct target_dirent *target_dirp; 9761 struct linux_dirent *dirp; 9762 abi_long count = arg3; 9763 9764 dirp = g_try_malloc(count); 9765 if (!dirp) { 9766 return -TARGET_ENOMEM; 9767 } 9768 9769 ret = get_errno(sys_getdents(arg1, dirp, count)); 9770 if (!is_error(ret)) { 9771 struct linux_dirent *de; 9772 struct target_dirent *tde; 9773 int len = ret; 9774 int reclen, treclen; 9775 int count1, tnamelen; 9776 9777 count1 = 0; 9778 de = dirp; 9779 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 9780 return -TARGET_EFAULT; 9781 tde = target_dirp; 9782 while (len > 0) { 9783 reclen = de->d_reclen; 9784 tnamelen = reclen - offsetof(struct linux_dirent, d_name); 9785 assert(tnamelen >= 0); 9786 treclen = tnamelen + offsetof(struct target_dirent, d_name); 9787 assert(count1 + treclen <= count); 9788 tde->d_reclen = tswap16(treclen); 9789 tde->d_ino = tswapal(de->d_ino); 9790 tde->d_off = tswapal(de->d_off); 9791 memcpy(tde->d_name, de->d_name, tnamelen); 9792 de = (struct linux_dirent *)((char *)de + reclen); 9793 len -= reclen; 9794 tde = (struct target_dirent *)((char *)tde + treclen); 9795 count1 += treclen; 9796 } 9797 ret = count1; 9798 unlock_user(target_dirp, arg2, ret); 9799 } 9800 g_free(dirp); 9801 } 9802 #else 9803 { 9804 struct linux_dirent *dirp; 9805 abi_long count = arg3; 9806 9807 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 9808 return -TARGET_EFAULT; 9809 ret = get_errno(sys_getdents(arg1, dirp, count)); 9810 if (!is_error(ret)) { 9811 struct linux_dirent *de; 9812 int len = ret; 9813 int reclen; 9814 de = dirp; 9815 while (len > 0) { 9816 reclen = de->d_reclen; 9817 if (reclen > len) 9818 break; 9819 de->d_reclen = tswap16(reclen); 9820 tswapls(&de->d_ino); 9821 tswapls(&de->d_off); 9822 de = (struct linux_dirent *)((char *)de + reclen); 9823 len -= reclen; 9824 } 9825 } 9826 unlock_user(dirp, arg2, ret); 9827 } 9828 #endif 9829 #else 9830 /* Implement getdents in terms of getdents64 */ 9831 { 9832 struct linux_dirent64 *dirp; 9833 abi_long count = arg3; 9834 9835 dirp = lock_user(VERIFY_WRITE, arg2, count, 0); 9836 if (!dirp) { 9837 return -TARGET_EFAULT; 9838 } 9839 ret = get_errno(sys_getdents64(arg1, dirp, count)); 9840 if (!is_error(ret)) { 9841 /* Convert the dirent64 structs to target dirent. We do this 9842 * in-place, since we can guarantee that a target_dirent is no 9843 * larger than a dirent64; however this means we have to be 9844 * careful to read everything before writing in the new format. 9845 */ 9846 struct linux_dirent64 *de; 9847 struct target_dirent *tde; 9848 int len = ret; 9849 int tlen = 0; 9850 9851 de = dirp; 9852 tde = (struct target_dirent *)dirp; 9853 while (len > 0) { 9854 int namelen, treclen; 9855 int reclen = de->d_reclen; 9856 uint64_t ino = de->d_ino; 9857 int64_t off = de->d_off; 9858 uint8_t type = de->d_type; 9859 9860 namelen = strlen(de->d_name); 9861 treclen = offsetof(struct target_dirent, d_name) 9862 + namelen + 2; 9863 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long)); 9864 9865 memmove(tde->d_name, de->d_name, namelen + 1); 9866 tde->d_ino = tswapal(ino); 9867 tde->d_off = tswapal(off); 9868 tde->d_reclen = tswap16(treclen); 9869 /* The target_dirent type is in what was formerly a padding 9870 * byte at the end of the structure: 9871 */ 9872 *(((char *)tde) + treclen - 1) = type; 9873 9874 de = (struct linux_dirent64 *)((char *)de + reclen); 9875 tde = (struct target_dirent *)((char *)tde + treclen); 9876 len -= reclen; 9877 tlen += treclen; 9878 } 9879 ret = tlen; 9880 } 9881 unlock_user(dirp, arg2, ret); 9882 } 9883 #endif 9884 return ret; 9885 #endif /* TARGET_NR_getdents */ 9886 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 9887 case TARGET_NR_getdents64: 9888 { 9889 struct linux_dirent64 *dirp; 9890 abi_long count = arg3; 9891 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 9892 return -TARGET_EFAULT; 9893 ret = get_errno(sys_getdents64(arg1, dirp, count)); 9894 if (!is_error(ret)) { 9895 struct linux_dirent64 *de; 9896 int len = ret; 9897 int reclen; 9898 de = dirp; 9899 while (len > 0) { 9900 reclen = de->d_reclen; 9901 if (reclen > len) 9902 break; 9903 de->d_reclen = tswap16(reclen); 9904 tswap64s((uint64_t *)&de->d_ino); 9905 tswap64s((uint64_t *)&de->d_off); 9906 de = (struct linux_dirent64 *)((char *)de + reclen); 9907 len -= reclen; 9908 } 9909 } 9910 unlock_user(dirp, arg2, ret); 9911 } 9912 return ret; 9913 #endif /* TARGET_NR_getdents64 */ 9914 #if defined(TARGET_NR__newselect) 9915 case TARGET_NR__newselect: 9916 return do_select(arg1, arg2, arg3, arg4, arg5); 9917 #endif 9918 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) 9919 # ifdef TARGET_NR_poll 9920 case TARGET_NR_poll: 9921 # endif 9922 # ifdef TARGET_NR_ppoll 9923 case TARGET_NR_ppoll: 9924 # endif 9925 { 9926 struct target_pollfd *target_pfd; 9927 unsigned int nfds = arg2; 9928 struct pollfd *pfd; 9929 unsigned int i; 9930 9931 pfd = NULL; 9932 target_pfd = NULL; 9933 if (nfds) { 9934 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 9935 return -TARGET_EINVAL; 9936 } 9937 9938 target_pfd = lock_user(VERIFY_WRITE, arg1, 9939 sizeof(struct target_pollfd) * nfds, 1); 9940 if (!target_pfd) { 9941 return -TARGET_EFAULT; 9942 } 9943 9944 pfd = alloca(sizeof(struct pollfd) * nfds); 9945 for (i = 0; i < nfds; i++) { 9946 pfd[i].fd = tswap32(target_pfd[i].fd); 9947 pfd[i].events = tswap16(target_pfd[i].events); 9948 } 9949 } 9950 9951 switch (num) { 9952 # ifdef TARGET_NR_ppoll 9953 case TARGET_NR_ppoll: 9954 { 9955 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 9956 target_sigset_t *target_set; 9957 sigset_t _set, *set = &_set; 9958 9959 if (arg3) { 9960 if (target_to_host_timespec(timeout_ts, arg3)) { 9961 unlock_user(target_pfd, arg1, 0); 9962 return -TARGET_EFAULT; 9963 } 9964 } else { 9965 timeout_ts = NULL; 9966 } 9967 9968 if (arg4) { 9969 if (arg5 != sizeof(target_sigset_t)) { 9970 unlock_user(target_pfd, arg1, 0); 9971 return -TARGET_EINVAL; 9972 } 9973 9974 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1); 9975 if (!target_set) { 9976 unlock_user(target_pfd, arg1, 0); 9977 return -TARGET_EFAULT; 9978 } 9979 target_to_host_sigset(set, target_set); 9980 } else { 9981 set = NULL; 9982 } 9983 9984 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 9985 set, SIGSET_T_SIZE)); 9986 9987 if (!is_error(ret) && arg3) { 9988 host_to_target_timespec(arg3, timeout_ts); 9989 } 9990 if (arg4) { 9991 unlock_user(target_set, arg4, 0); 9992 } 9993 break; 9994 } 9995 # endif 9996 # ifdef TARGET_NR_poll 9997 case TARGET_NR_poll: 9998 { 9999 struct timespec ts, *pts; 10000 10001 if (arg3 >= 0) { 10002 /* Convert ms to secs, ns */ 10003 ts.tv_sec = arg3 / 1000; 10004 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 10005 pts = &ts; 10006 } else { 10007 /* -ve poll() timeout means "infinite" */ 10008 pts = NULL; 10009 } 10010 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 10011 break; 10012 } 10013 # endif 10014 default: 10015 g_assert_not_reached(); 10016 } 10017 10018 if (!is_error(ret)) { 10019 for(i = 0; i < nfds; i++) { 10020 target_pfd[i].revents = tswap16(pfd[i].revents); 10021 } 10022 } 10023 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 10024 } 10025 return ret; 10026 #endif 10027 case TARGET_NR_flock: 10028 /* NOTE: the flock constant seems to be the same for every 10029 Linux platform */ 10030 return get_errno(safe_flock(arg1, arg2)); 10031 case TARGET_NR_readv: 10032 { 10033 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10034 if (vec != NULL) { 10035 ret = get_errno(safe_readv(arg1, vec, arg3)); 10036 unlock_iovec(vec, arg2, arg3, 1); 10037 } else { 10038 ret = -host_to_target_errno(errno); 10039 } 10040 } 10041 return ret; 10042 case TARGET_NR_writev: 10043 { 10044 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10045 if (vec != NULL) { 10046 ret = get_errno(safe_writev(arg1, vec, arg3)); 10047 unlock_iovec(vec, arg2, arg3, 0); 10048 } else { 10049 ret = -host_to_target_errno(errno); 10050 } 10051 } 10052 return ret; 10053 #if defined(TARGET_NR_preadv) 10054 case TARGET_NR_preadv: 10055 { 10056 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10057 if (vec != NULL) { 10058 unsigned long low, high; 10059 10060 target_to_host_low_high(arg4, arg5, &low, &high); 10061 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10062 unlock_iovec(vec, arg2, arg3, 1); 10063 } else { 10064 ret = -host_to_target_errno(errno); 10065 } 10066 } 10067 return ret; 10068 #endif 10069 #if defined(TARGET_NR_pwritev) 10070 case TARGET_NR_pwritev: 10071 { 10072 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10073 if (vec != NULL) { 10074 unsigned long low, high; 10075 10076 target_to_host_low_high(arg4, arg5, &low, &high); 10077 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10078 unlock_iovec(vec, arg2, arg3, 0); 10079 } else { 10080 ret = -host_to_target_errno(errno); 10081 } 10082 } 10083 return ret; 10084 #endif 10085 case TARGET_NR_getsid: 10086 return get_errno(getsid(arg1)); 10087 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10088 case TARGET_NR_fdatasync: 10089 return get_errno(fdatasync(arg1)); 10090 #endif 10091 #ifdef TARGET_NR__sysctl 10092 case TARGET_NR__sysctl: 10093 /* We don't implement this, but ENOTDIR is always a safe 10094 return value. */ 10095 return -TARGET_ENOTDIR; 10096 #endif 10097 case TARGET_NR_sched_getaffinity: 10098 { 10099 unsigned int mask_size; 10100 unsigned long *mask; 10101 10102 /* 10103 * sched_getaffinity needs multiples of ulong, so need to take 10104 * care of mismatches between target ulong and host ulong sizes. 10105 */ 10106 if (arg2 & (sizeof(abi_ulong) - 1)) { 10107 return -TARGET_EINVAL; 10108 } 10109 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10110 10111 mask = alloca(mask_size); 10112 memset(mask, 0, mask_size); 10113 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10114 10115 if (!is_error(ret)) { 10116 if (ret > arg2) { 10117 /* More data returned than the caller's buffer will fit. 10118 * This only happens if sizeof(abi_long) < sizeof(long) 10119 * and the caller passed us a buffer holding an odd number 10120 * of abi_longs. If the host kernel is actually using the 10121 * extra 4 bytes then fail EINVAL; otherwise we can just 10122 * ignore them and only copy the interesting part. 10123 */ 10124 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10125 if (numcpus > arg2 * 8) { 10126 return -TARGET_EINVAL; 10127 } 10128 ret = arg2; 10129 } 10130 10131 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10132 return -TARGET_EFAULT; 10133 } 10134 } 10135 } 10136 return ret; 10137 case TARGET_NR_sched_setaffinity: 10138 { 10139 unsigned int mask_size; 10140 unsigned long *mask; 10141 10142 /* 10143 * sched_setaffinity needs multiples of ulong, so need to take 10144 * care of mismatches between target ulong and host ulong sizes. 10145 */ 10146 if (arg2 & (sizeof(abi_ulong) - 1)) { 10147 return -TARGET_EINVAL; 10148 } 10149 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10150 mask = alloca(mask_size); 10151 10152 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10153 if (ret) { 10154 return ret; 10155 } 10156 10157 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10158 } 10159 case TARGET_NR_getcpu: 10160 { 10161 unsigned cpu, node; 10162 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10163 arg2 ? &node : NULL, 10164 NULL)); 10165 if (is_error(ret)) { 10166 return ret; 10167 } 10168 if (arg1 && put_user_u32(cpu, arg1)) { 10169 return -TARGET_EFAULT; 10170 } 10171 if (arg2 && put_user_u32(node, arg2)) { 10172 return -TARGET_EFAULT; 10173 } 10174 } 10175 return ret; 10176 case TARGET_NR_sched_setparam: 10177 { 10178 struct sched_param *target_schp; 10179 struct sched_param schp; 10180 10181 if (arg2 == 0) { 10182 return -TARGET_EINVAL; 10183 } 10184 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) 10185 return -TARGET_EFAULT; 10186 schp.sched_priority = tswap32(target_schp->sched_priority); 10187 unlock_user_struct(target_schp, arg2, 0); 10188 return get_errno(sched_setparam(arg1, &schp)); 10189 } 10190 case TARGET_NR_sched_getparam: 10191 { 10192 struct sched_param *target_schp; 10193 struct sched_param schp; 10194 10195 if (arg2 == 0) { 10196 return -TARGET_EINVAL; 10197 } 10198 ret = get_errno(sched_getparam(arg1, &schp)); 10199 if (!is_error(ret)) { 10200 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) 10201 return -TARGET_EFAULT; 10202 target_schp->sched_priority = tswap32(schp.sched_priority); 10203 unlock_user_struct(target_schp, arg2, 1); 10204 } 10205 } 10206 return ret; 10207 case TARGET_NR_sched_setscheduler: 10208 { 10209 struct sched_param *target_schp; 10210 struct sched_param schp; 10211 if (arg3 == 0) { 10212 return -TARGET_EINVAL; 10213 } 10214 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) 10215 return -TARGET_EFAULT; 10216 schp.sched_priority = tswap32(target_schp->sched_priority); 10217 unlock_user_struct(target_schp, arg3, 0); 10218 return get_errno(sched_setscheduler(arg1, arg2, &schp)); 10219 } 10220 case TARGET_NR_sched_getscheduler: 10221 return get_errno(sched_getscheduler(arg1)); 10222 case TARGET_NR_sched_yield: 10223 return get_errno(sched_yield()); 10224 case TARGET_NR_sched_get_priority_max: 10225 return get_errno(sched_get_priority_max(arg1)); 10226 case TARGET_NR_sched_get_priority_min: 10227 return get_errno(sched_get_priority_min(arg1)); 10228 #ifdef TARGET_NR_sched_rr_get_interval 10229 case TARGET_NR_sched_rr_get_interval: 10230 { 10231 struct timespec ts; 10232 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10233 if (!is_error(ret)) { 10234 ret = host_to_target_timespec(arg2, &ts); 10235 } 10236 } 10237 return ret; 10238 #endif 10239 #if defined(TARGET_NR_nanosleep) 10240 case TARGET_NR_nanosleep: 10241 { 10242 struct timespec req, rem; 10243 target_to_host_timespec(&req, arg1); 10244 ret = get_errno(safe_nanosleep(&req, &rem)); 10245 if (is_error(ret) && arg2) { 10246 host_to_target_timespec(arg2, &rem); 10247 } 10248 } 10249 return ret; 10250 #endif 10251 case TARGET_NR_prctl: 10252 switch (arg1) { 10253 case PR_GET_PDEATHSIG: 10254 { 10255 int deathsig; 10256 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5)); 10257 if (!is_error(ret) && arg2 10258 && put_user_ual(deathsig, arg2)) { 10259 return -TARGET_EFAULT; 10260 } 10261 return ret; 10262 } 10263 #ifdef PR_GET_NAME 10264 case PR_GET_NAME: 10265 { 10266 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 10267 if (!name) { 10268 return -TARGET_EFAULT; 10269 } 10270 ret = get_errno(prctl(arg1, (unsigned long)name, 10271 arg3, arg4, arg5)); 10272 unlock_user(name, arg2, 16); 10273 return ret; 10274 } 10275 case PR_SET_NAME: 10276 { 10277 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 10278 if (!name) { 10279 return -TARGET_EFAULT; 10280 } 10281 ret = get_errno(prctl(arg1, (unsigned long)name, 10282 arg3, arg4, arg5)); 10283 unlock_user(name, arg2, 0); 10284 return ret; 10285 } 10286 #endif 10287 #ifdef TARGET_MIPS 10288 case TARGET_PR_GET_FP_MODE: 10289 { 10290 CPUMIPSState *env = ((CPUMIPSState *)cpu_env); 10291 ret = 0; 10292 if (env->CP0_Status & (1 << CP0St_FR)) { 10293 ret |= TARGET_PR_FP_MODE_FR; 10294 } 10295 if (env->CP0_Config5 & (1 << CP0C5_FRE)) { 10296 ret |= TARGET_PR_FP_MODE_FRE; 10297 } 10298 return ret; 10299 } 10300 case TARGET_PR_SET_FP_MODE: 10301 { 10302 CPUMIPSState *env = ((CPUMIPSState *)cpu_env); 10303 bool old_fr = env->CP0_Status & (1 << CP0St_FR); 10304 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE); 10305 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR; 10306 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE; 10307 10308 const unsigned int known_bits = TARGET_PR_FP_MODE_FR | 10309 TARGET_PR_FP_MODE_FRE; 10310 10311 /* If nothing to change, return right away, successfully. */ 10312 if (old_fr == new_fr && old_fre == new_fre) { 10313 return 0; 10314 } 10315 /* Check the value is valid */ 10316 if (arg2 & ~known_bits) { 10317 return -TARGET_EOPNOTSUPP; 10318 } 10319 /* Setting FRE without FR is not supported. */ 10320 if (new_fre && !new_fr) { 10321 return -TARGET_EOPNOTSUPP; 10322 } 10323 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) { 10324 /* FR1 is not supported */ 10325 return -TARGET_EOPNOTSUPP; 10326 } 10327 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64)) 10328 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) { 10329 /* cannot set FR=0 */ 10330 return -TARGET_EOPNOTSUPP; 10331 } 10332 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) { 10333 /* Cannot set FRE=1 */ 10334 return -TARGET_EOPNOTSUPP; 10335 } 10336 10337 int i; 10338 fpr_t *fpr = env->active_fpu.fpr; 10339 for (i = 0; i < 32 ; i += 2) { 10340 if (!old_fr && new_fr) { 10341 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX]; 10342 } else if (old_fr && !new_fr) { 10343 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX]; 10344 } 10345 } 10346 10347 if (new_fr) { 10348 env->CP0_Status |= (1 << CP0St_FR); 10349 env->hflags |= MIPS_HFLAG_F64; 10350 } else { 10351 env->CP0_Status &= ~(1 << CP0St_FR); 10352 env->hflags &= ~MIPS_HFLAG_F64; 10353 } 10354 if (new_fre) { 10355 env->CP0_Config5 |= (1 << CP0C5_FRE); 10356 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) { 10357 env->hflags |= MIPS_HFLAG_FRE; 10358 } 10359 } else { 10360 env->CP0_Config5 &= ~(1 << CP0C5_FRE); 10361 env->hflags &= ~MIPS_HFLAG_FRE; 10362 } 10363 10364 return 0; 10365 } 10366 #endif /* MIPS */ 10367 #ifdef TARGET_AARCH64 10368 case TARGET_PR_SVE_SET_VL: 10369 /* 10370 * We cannot support either PR_SVE_SET_VL_ONEXEC or 10371 * PR_SVE_VL_INHERIT. Note the kernel definition 10372 * of sve_vl_valid allows for VQ=512, i.e. VL=8192, 10373 * even though the current architectural maximum is VQ=16. 10374 */ 10375 ret = -TARGET_EINVAL; 10376 if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env)) 10377 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) { 10378 CPUARMState *env = cpu_env; 10379 ARMCPU *cpu = env_archcpu(env); 10380 uint32_t vq, old_vq; 10381 10382 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1; 10383 vq = MAX(arg2 / 16, 1); 10384 vq = MIN(vq, cpu->sve_max_vq); 10385 10386 if (vq < old_vq) { 10387 aarch64_sve_narrow_vq(env, vq); 10388 } 10389 env->vfp.zcr_el[1] = vq - 1; 10390 arm_rebuild_hflags(env); 10391 ret = vq * 16; 10392 } 10393 return ret; 10394 case TARGET_PR_SVE_GET_VL: 10395 ret = -TARGET_EINVAL; 10396 { 10397 ARMCPU *cpu = env_archcpu(cpu_env); 10398 if (cpu_isar_feature(aa64_sve, cpu)) { 10399 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16; 10400 } 10401 } 10402 return ret; 10403 case TARGET_PR_PAC_RESET_KEYS: 10404 { 10405 CPUARMState *env = cpu_env; 10406 ARMCPU *cpu = env_archcpu(env); 10407 10408 if (arg3 || arg4 || arg5) { 10409 return -TARGET_EINVAL; 10410 } 10411 if (cpu_isar_feature(aa64_pauth, cpu)) { 10412 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY | 10413 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY | 10414 TARGET_PR_PAC_APGAKEY); 10415 int ret = 0; 10416 Error *err = NULL; 10417 10418 if (arg2 == 0) { 10419 arg2 = all; 10420 } else if (arg2 & ~all) { 10421 return -TARGET_EINVAL; 10422 } 10423 if (arg2 & TARGET_PR_PAC_APIAKEY) { 10424 ret |= qemu_guest_getrandom(&env->keys.apia, 10425 sizeof(ARMPACKey), &err); 10426 } 10427 if (arg2 & TARGET_PR_PAC_APIBKEY) { 10428 ret |= qemu_guest_getrandom(&env->keys.apib, 10429 sizeof(ARMPACKey), &err); 10430 } 10431 if (arg2 & TARGET_PR_PAC_APDAKEY) { 10432 ret |= qemu_guest_getrandom(&env->keys.apda, 10433 sizeof(ARMPACKey), &err); 10434 } 10435 if (arg2 & TARGET_PR_PAC_APDBKEY) { 10436 ret |= qemu_guest_getrandom(&env->keys.apdb, 10437 sizeof(ARMPACKey), &err); 10438 } 10439 if (arg2 & TARGET_PR_PAC_APGAKEY) { 10440 ret |= qemu_guest_getrandom(&env->keys.apga, 10441 sizeof(ARMPACKey), &err); 10442 } 10443 if (ret != 0) { 10444 /* 10445 * Some unknown failure in the crypto. The best 10446 * we can do is log it and fail the syscall. 10447 * The real syscall cannot fail this way. 10448 */ 10449 qemu_log_mask(LOG_UNIMP, 10450 "PR_PAC_RESET_KEYS: Crypto failure: %s", 10451 error_get_pretty(err)); 10452 error_free(err); 10453 return -TARGET_EIO; 10454 } 10455 return 0; 10456 } 10457 } 10458 return -TARGET_EINVAL; 10459 #endif /* AARCH64 */ 10460 case PR_GET_SECCOMP: 10461 case PR_SET_SECCOMP: 10462 /* Disable seccomp to prevent the target disabling syscalls we 10463 * need. */ 10464 return -TARGET_EINVAL; 10465 default: 10466 /* Most prctl options have no pointer arguments */ 10467 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5)); 10468 } 10469 break; 10470 #ifdef TARGET_NR_arch_prctl 10471 case TARGET_NR_arch_prctl: 10472 return do_arch_prctl(cpu_env, arg1, arg2); 10473 #endif 10474 #ifdef TARGET_NR_pread64 10475 case TARGET_NR_pread64: 10476 if (regpairs_aligned(cpu_env, num)) { 10477 arg4 = arg5; 10478 arg5 = arg6; 10479 } 10480 if (arg2 == 0 && arg3 == 0) { 10481 /* Special-case NULL buffer and zero length, which should succeed */ 10482 p = 0; 10483 } else { 10484 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10485 if (!p) { 10486 return -TARGET_EFAULT; 10487 } 10488 } 10489 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 10490 unlock_user(p, arg2, ret); 10491 return ret; 10492 case TARGET_NR_pwrite64: 10493 if (regpairs_aligned(cpu_env, num)) { 10494 arg4 = arg5; 10495 arg5 = arg6; 10496 } 10497 if (arg2 == 0 && arg3 == 0) { 10498 /* Special-case NULL buffer and zero length, which should succeed */ 10499 p = 0; 10500 } else { 10501 p = lock_user(VERIFY_READ, arg2, arg3, 1); 10502 if (!p) { 10503 return -TARGET_EFAULT; 10504 } 10505 } 10506 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 10507 unlock_user(p, arg2, 0); 10508 return ret; 10509 #endif 10510 case TARGET_NR_getcwd: 10511 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 10512 return -TARGET_EFAULT; 10513 ret = get_errno(sys_getcwd1(p, arg2)); 10514 unlock_user(p, arg1, ret); 10515 return ret; 10516 case TARGET_NR_capget: 10517 case TARGET_NR_capset: 10518 { 10519 struct target_user_cap_header *target_header; 10520 struct target_user_cap_data *target_data = NULL; 10521 struct __user_cap_header_struct header; 10522 struct __user_cap_data_struct data[2]; 10523 struct __user_cap_data_struct *dataptr = NULL; 10524 int i, target_datalen; 10525 int data_items = 1; 10526 10527 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 10528 return -TARGET_EFAULT; 10529 } 10530 header.version = tswap32(target_header->version); 10531 header.pid = tswap32(target_header->pid); 10532 10533 if (header.version != _LINUX_CAPABILITY_VERSION) { 10534 /* Version 2 and up takes pointer to two user_data structs */ 10535 data_items = 2; 10536 } 10537 10538 target_datalen = sizeof(*target_data) * data_items; 10539 10540 if (arg2) { 10541 if (num == TARGET_NR_capget) { 10542 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 10543 } else { 10544 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 10545 } 10546 if (!target_data) { 10547 unlock_user_struct(target_header, arg1, 0); 10548 return -TARGET_EFAULT; 10549 } 10550 10551 if (num == TARGET_NR_capset) { 10552 for (i = 0; i < data_items; i++) { 10553 data[i].effective = tswap32(target_data[i].effective); 10554 data[i].permitted = tswap32(target_data[i].permitted); 10555 data[i].inheritable = tswap32(target_data[i].inheritable); 10556 } 10557 } 10558 10559 dataptr = data; 10560 } 10561 10562 if (num == TARGET_NR_capget) { 10563 ret = get_errno(capget(&header, dataptr)); 10564 } else { 10565 ret = get_errno(capset(&header, dataptr)); 10566 } 10567 10568 /* The kernel always updates version for both capget and capset */ 10569 target_header->version = tswap32(header.version); 10570 unlock_user_struct(target_header, arg1, 1); 10571 10572 if (arg2) { 10573 if (num == TARGET_NR_capget) { 10574 for (i = 0; i < data_items; i++) { 10575 target_data[i].effective = tswap32(data[i].effective); 10576 target_data[i].permitted = tswap32(data[i].permitted); 10577 target_data[i].inheritable = tswap32(data[i].inheritable); 10578 } 10579 unlock_user(target_data, arg2, target_datalen); 10580 } else { 10581 unlock_user(target_data, arg2, 0); 10582 } 10583 } 10584 return ret; 10585 } 10586 case TARGET_NR_sigaltstack: 10587 return do_sigaltstack(arg1, arg2, 10588 get_sp_from_cpustate((CPUArchState *)cpu_env)); 10589 10590 #ifdef CONFIG_SENDFILE 10591 #ifdef TARGET_NR_sendfile 10592 case TARGET_NR_sendfile: 10593 { 10594 off_t *offp = NULL; 10595 off_t off; 10596 if (arg3) { 10597 ret = get_user_sal(off, arg3); 10598 if (is_error(ret)) { 10599 return ret; 10600 } 10601 offp = &off; 10602 } 10603 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 10604 if (!is_error(ret) && arg3) { 10605 abi_long ret2 = put_user_sal(off, arg3); 10606 if (is_error(ret2)) { 10607 ret = ret2; 10608 } 10609 } 10610 return ret; 10611 } 10612 #endif 10613 #ifdef TARGET_NR_sendfile64 10614 case TARGET_NR_sendfile64: 10615 { 10616 off_t *offp = NULL; 10617 off_t off; 10618 if (arg3) { 10619 ret = get_user_s64(off, arg3); 10620 if (is_error(ret)) { 10621 return ret; 10622 } 10623 offp = &off; 10624 } 10625 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 10626 if (!is_error(ret) && arg3) { 10627 abi_long ret2 = put_user_s64(off, arg3); 10628 if (is_error(ret2)) { 10629 ret = ret2; 10630 } 10631 } 10632 return ret; 10633 } 10634 #endif 10635 #endif 10636 #ifdef TARGET_NR_vfork 10637 case TARGET_NR_vfork: 10638 return get_errno(do_fork(cpu_env, 10639 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 10640 0, 0, 0, 0)); 10641 #endif 10642 #ifdef TARGET_NR_ugetrlimit 10643 case TARGET_NR_ugetrlimit: 10644 { 10645 struct rlimit rlim; 10646 int resource = target_to_host_resource(arg1); 10647 ret = get_errno(getrlimit(resource, &rlim)); 10648 if (!is_error(ret)) { 10649 struct target_rlimit *target_rlim; 10650 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 10651 return -TARGET_EFAULT; 10652 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 10653 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 10654 unlock_user_struct(target_rlim, arg2, 1); 10655 } 10656 return ret; 10657 } 10658 #endif 10659 #ifdef TARGET_NR_truncate64 10660 case TARGET_NR_truncate64: 10661 if (!(p = lock_user_string(arg1))) 10662 return -TARGET_EFAULT; 10663 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 10664 unlock_user(p, arg1, 0); 10665 return ret; 10666 #endif 10667 #ifdef TARGET_NR_ftruncate64 10668 case TARGET_NR_ftruncate64: 10669 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 10670 #endif 10671 #ifdef TARGET_NR_stat64 10672 case TARGET_NR_stat64: 10673 if (!(p = lock_user_string(arg1))) { 10674 return -TARGET_EFAULT; 10675 } 10676 ret = get_errno(stat(path(p), &st)); 10677 unlock_user(p, arg1, 0); 10678 if (!is_error(ret)) 10679 ret = host_to_target_stat64(cpu_env, arg2, &st); 10680 return ret; 10681 #endif 10682 #ifdef TARGET_NR_lstat64 10683 case TARGET_NR_lstat64: 10684 if (!(p = lock_user_string(arg1))) { 10685 return -TARGET_EFAULT; 10686 } 10687 ret = get_errno(lstat(path(p), &st)); 10688 unlock_user(p, arg1, 0); 10689 if (!is_error(ret)) 10690 ret = host_to_target_stat64(cpu_env, arg2, &st); 10691 return ret; 10692 #endif 10693 #ifdef TARGET_NR_fstat64 10694 case TARGET_NR_fstat64: 10695 ret = get_errno(fstat(arg1, &st)); 10696 if (!is_error(ret)) 10697 ret = host_to_target_stat64(cpu_env, arg2, &st); 10698 return ret; 10699 #endif 10700 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 10701 #ifdef TARGET_NR_fstatat64 10702 case TARGET_NR_fstatat64: 10703 #endif 10704 #ifdef TARGET_NR_newfstatat 10705 case TARGET_NR_newfstatat: 10706 #endif 10707 if (!(p = lock_user_string(arg2))) { 10708 return -TARGET_EFAULT; 10709 } 10710 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 10711 unlock_user(p, arg2, 0); 10712 if (!is_error(ret)) 10713 ret = host_to_target_stat64(cpu_env, arg3, &st); 10714 return ret; 10715 #endif 10716 #if defined(TARGET_NR_statx) 10717 case TARGET_NR_statx: 10718 { 10719 struct target_statx *target_stx; 10720 int dirfd = arg1; 10721 int flags = arg3; 10722 10723 p = lock_user_string(arg2); 10724 if (p == NULL) { 10725 return -TARGET_EFAULT; 10726 } 10727 #if defined(__NR_statx) 10728 { 10729 /* 10730 * It is assumed that struct statx is architecture independent. 10731 */ 10732 struct target_statx host_stx; 10733 int mask = arg4; 10734 10735 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 10736 if (!is_error(ret)) { 10737 if (host_to_target_statx(&host_stx, arg5) != 0) { 10738 unlock_user(p, arg2, 0); 10739 return -TARGET_EFAULT; 10740 } 10741 } 10742 10743 if (ret != -TARGET_ENOSYS) { 10744 unlock_user(p, arg2, 0); 10745 return ret; 10746 } 10747 } 10748 #endif 10749 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 10750 unlock_user(p, arg2, 0); 10751 10752 if (!is_error(ret)) { 10753 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 10754 return -TARGET_EFAULT; 10755 } 10756 memset(target_stx, 0, sizeof(*target_stx)); 10757 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 10758 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 10759 __put_user(st.st_ino, &target_stx->stx_ino); 10760 __put_user(st.st_mode, &target_stx->stx_mode); 10761 __put_user(st.st_uid, &target_stx->stx_uid); 10762 __put_user(st.st_gid, &target_stx->stx_gid); 10763 __put_user(st.st_nlink, &target_stx->stx_nlink); 10764 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 10765 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 10766 __put_user(st.st_size, &target_stx->stx_size); 10767 __put_user(st.st_blksize, &target_stx->stx_blksize); 10768 __put_user(st.st_blocks, &target_stx->stx_blocks); 10769 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 10770 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 10771 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 10772 unlock_user_struct(target_stx, arg5, 1); 10773 } 10774 } 10775 return ret; 10776 #endif 10777 #ifdef TARGET_NR_lchown 10778 case TARGET_NR_lchown: 10779 if (!(p = lock_user_string(arg1))) 10780 return -TARGET_EFAULT; 10781 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 10782 unlock_user(p, arg1, 0); 10783 return ret; 10784 #endif 10785 #ifdef TARGET_NR_getuid 10786 case TARGET_NR_getuid: 10787 return get_errno(high2lowuid(getuid())); 10788 #endif 10789 #ifdef TARGET_NR_getgid 10790 case TARGET_NR_getgid: 10791 return get_errno(high2lowgid(getgid())); 10792 #endif 10793 #ifdef TARGET_NR_geteuid 10794 case TARGET_NR_geteuid: 10795 return get_errno(high2lowuid(geteuid())); 10796 #endif 10797 #ifdef TARGET_NR_getegid 10798 case TARGET_NR_getegid: 10799 return get_errno(high2lowgid(getegid())); 10800 #endif 10801 case TARGET_NR_setreuid: 10802 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 10803 case TARGET_NR_setregid: 10804 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 10805 case TARGET_NR_getgroups: 10806 { 10807 int gidsetsize = arg1; 10808 target_id *target_grouplist; 10809 gid_t *grouplist; 10810 int i; 10811 10812 grouplist = alloca(gidsetsize * sizeof(gid_t)); 10813 ret = get_errno(getgroups(gidsetsize, grouplist)); 10814 if (gidsetsize == 0) 10815 return ret; 10816 if (!is_error(ret)) { 10817 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 10818 if (!target_grouplist) 10819 return -TARGET_EFAULT; 10820 for(i = 0;i < ret; i++) 10821 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 10822 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 10823 } 10824 } 10825 return ret; 10826 case TARGET_NR_setgroups: 10827 { 10828 int gidsetsize = arg1; 10829 target_id *target_grouplist; 10830 gid_t *grouplist = NULL; 10831 int i; 10832 if (gidsetsize) { 10833 grouplist = alloca(gidsetsize * sizeof(gid_t)); 10834 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 10835 if (!target_grouplist) { 10836 return -TARGET_EFAULT; 10837 } 10838 for (i = 0; i < gidsetsize; i++) { 10839 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 10840 } 10841 unlock_user(target_grouplist, arg2, 0); 10842 } 10843 return get_errno(setgroups(gidsetsize, grouplist)); 10844 } 10845 case TARGET_NR_fchown: 10846 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 10847 #if defined(TARGET_NR_fchownat) 10848 case TARGET_NR_fchownat: 10849 if (!(p = lock_user_string(arg2))) 10850 return -TARGET_EFAULT; 10851 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 10852 low2highgid(arg4), arg5)); 10853 unlock_user(p, arg2, 0); 10854 return ret; 10855 #endif 10856 #ifdef TARGET_NR_setresuid 10857 case TARGET_NR_setresuid: 10858 return get_errno(sys_setresuid(low2highuid(arg1), 10859 low2highuid(arg2), 10860 low2highuid(arg3))); 10861 #endif 10862 #ifdef TARGET_NR_getresuid 10863 case TARGET_NR_getresuid: 10864 { 10865 uid_t ruid, euid, suid; 10866 ret = get_errno(getresuid(&ruid, &euid, &suid)); 10867 if (!is_error(ret)) { 10868 if (put_user_id(high2lowuid(ruid), arg1) 10869 || put_user_id(high2lowuid(euid), arg2) 10870 || put_user_id(high2lowuid(suid), arg3)) 10871 return -TARGET_EFAULT; 10872 } 10873 } 10874 return ret; 10875 #endif 10876 #ifdef TARGET_NR_getresgid 10877 case TARGET_NR_setresgid: 10878 return get_errno(sys_setresgid(low2highgid(arg1), 10879 low2highgid(arg2), 10880 low2highgid(arg3))); 10881 #endif 10882 #ifdef TARGET_NR_getresgid 10883 case TARGET_NR_getresgid: 10884 { 10885 gid_t rgid, egid, sgid; 10886 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 10887 if (!is_error(ret)) { 10888 if (put_user_id(high2lowgid(rgid), arg1) 10889 || put_user_id(high2lowgid(egid), arg2) 10890 || put_user_id(high2lowgid(sgid), arg3)) 10891 return -TARGET_EFAULT; 10892 } 10893 } 10894 return ret; 10895 #endif 10896 #ifdef TARGET_NR_chown 10897 case TARGET_NR_chown: 10898 if (!(p = lock_user_string(arg1))) 10899 return -TARGET_EFAULT; 10900 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 10901 unlock_user(p, arg1, 0); 10902 return ret; 10903 #endif 10904 case TARGET_NR_setuid: 10905 return get_errno(sys_setuid(low2highuid(arg1))); 10906 case TARGET_NR_setgid: 10907 return get_errno(sys_setgid(low2highgid(arg1))); 10908 case TARGET_NR_setfsuid: 10909 return get_errno(setfsuid(arg1)); 10910 case TARGET_NR_setfsgid: 10911 return get_errno(setfsgid(arg1)); 10912 10913 #ifdef TARGET_NR_lchown32 10914 case TARGET_NR_lchown32: 10915 if (!(p = lock_user_string(arg1))) 10916 return -TARGET_EFAULT; 10917 ret = get_errno(lchown(p, arg2, arg3)); 10918 unlock_user(p, arg1, 0); 10919 return ret; 10920 #endif 10921 #ifdef TARGET_NR_getuid32 10922 case TARGET_NR_getuid32: 10923 return get_errno(getuid()); 10924 #endif 10925 10926 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 10927 /* Alpha specific */ 10928 case TARGET_NR_getxuid: 10929 { 10930 uid_t euid; 10931 euid=geteuid(); 10932 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; 10933 } 10934 return get_errno(getuid()); 10935 #endif 10936 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 10937 /* Alpha specific */ 10938 case TARGET_NR_getxgid: 10939 { 10940 uid_t egid; 10941 egid=getegid(); 10942 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; 10943 } 10944 return get_errno(getgid()); 10945 #endif 10946 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 10947 /* Alpha specific */ 10948 case TARGET_NR_osf_getsysinfo: 10949 ret = -TARGET_EOPNOTSUPP; 10950 switch (arg1) { 10951 case TARGET_GSI_IEEE_FP_CONTROL: 10952 { 10953 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 10954 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr; 10955 10956 swcr &= ~SWCR_STATUS_MASK; 10957 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 10958 10959 if (put_user_u64 (swcr, arg2)) 10960 return -TARGET_EFAULT; 10961 ret = 0; 10962 } 10963 break; 10964 10965 /* case GSI_IEEE_STATE_AT_SIGNAL: 10966 -- Not implemented in linux kernel. 10967 case GSI_UACPROC: 10968 -- Retrieves current unaligned access state; not much used. 10969 case GSI_PROC_TYPE: 10970 -- Retrieves implver information; surely not used. 10971 case GSI_GET_HWRPB: 10972 -- Grabs a copy of the HWRPB; surely not used. 10973 */ 10974 } 10975 return ret; 10976 #endif 10977 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 10978 /* Alpha specific */ 10979 case TARGET_NR_osf_setsysinfo: 10980 ret = -TARGET_EOPNOTSUPP; 10981 switch (arg1) { 10982 case TARGET_SSI_IEEE_FP_CONTROL: 10983 { 10984 uint64_t swcr, fpcr; 10985 10986 if (get_user_u64 (swcr, arg2)) { 10987 return -TARGET_EFAULT; 10988 } 10989 10990 /* 10991 * The kernel calls swcr_update_status to update the 10992 * status bits from the fpcr at every point that it 10993 * could be queried. Therefore, we store the status 10994 * bits only in FPCR. 10995 */ 10996 ((CPUAlphaState *)cpu_env)->swcr 10997 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 10998 10999 fpcr = cpu_alpha_load_fpcr(cpu_env); 11000 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11001 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11002 cpu_alpha_store_fpcr(cpu_env, fpcr); 11003 ret = 0; 11004 } 11005 break; 11006 11007 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11008 { 11009 uint64_t exc, fpcr, fex; 11010 11011 if (get_user_u64(exc, arg2)) { 11012 return -TARGET_EFAULT; 11013 } 11014 exc &= SWCR_STATUS_MASK; 11015 fpcr = cpu_alpha_load_fpcr(cpu_env); 11016 11017 /* Old exceptions are not signaled. */ 11018 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11019 fex = exc & ~fex; 11020 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11021 fex &= ((CPUArchState *)cpu_env)->swcr; 11022 11023 /* Update the hardware fpcr. */ 11024 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11025 cpu_alpha_store_fpcr(cpu_env, fpcr); 11026 11027 if (fex) { 11028 int si_code = TARGET_FPE_FLTUNK; 11029 target_siginfo_t info; 11030 11031 if (fex & SWCR_TRAP_ENABLE_DNO) { 11032 si_code = TARGET_FPE_FLTUND; 11033 } 11034 if (fex & SWCR_TRAP_ENABLE_INE) { 11035 si_code = TARGET_FPE_FLTRES; 11036 } 11037 if (fex & SWCR_TRAP_ENABLE_UNF) { 11038 si_code = TARGET_FPE_FLTUND; 11039 } 11040 if (fex & SWCR_TRAP_ENABLE_OVF) { 11041 si_code = TARGET_FPE_FLTOVF; 11042 } 11043 if (fex & SWCR_TRAP_ENABLE_DZE) { 11044 si_code = TARGET_FPE_FLTDIV; 11045 } 11046 if (fex & SWCR_TRAP_ENABLE_INV) { 11047 si_code = TARGET_FPE_FLTINV; 11048 } 11049 11050 info.si_signo = SIGFPE; 11051 info.si_errno = 0; 11052 info.si_code = si_code; 11053 info._sifields._sigfault._addr 11054 = ((CPUArchState *)cpu_env)->pc; 11055 queue_signal((CPUArchState *)cpu_env, info.si_signo, 11056 QEMU_SI_FAULT, &info); 11057 } 11058 ret = 0; 11059 } 11060 break; 11061 11062 /* case SSI_NVPAIRS: 11063 -- Used with SSIN_UACPROC to enable unaligned accesses. 11064 case SSI_IEEE_STATE_AT_SIGNAL: 11065 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11066 -- Not implemented in linux kernel 11067 */ 11068 } 11069 return ret; 11070 #endif 11071 #ifdef TARGET_NR_osf_sigprocmask 11072 /* Alpha specific. */ 11073 case TARGET_NR_osf_sigprocmask: 11074 { 11075 abi_ulong mask; 11076 int how; 11077 sigset_t set, oldset; 11078 11079 switch(arg1) { 11080 case TARGET_SIG_BLOCK: 11081 how = SIG_BLOCK; 11082 break; 11083 case TARGET_SIG_UNBLOCK: 11084 how = SIG_UNBLOCK; 11085 break; 11086 case TARGET_SIG_SETMASK: 11087 how = SIG_SETMASK; 11088 break; 11089 default: 11090 return -TARGET_EINVAL; 11091 } 11092 mask = arg2; 11093 target_to_host_old_sigset(&set, &mask); 11094 ret = do_sigprocmask(how, &set, &oldset); 11095 if (!ret) { 11096 host_to_target_old_sigset(&mask, &oldset); 11097 ret = mask; 11098 } 11099 } 11100 return ret; 11101 #endif 11102 11103 #ifdef TARGET_NR_getgid32 11104 case TARGET_NR_getgid32: 11105 return get_errno(getgid()); 11106 #endif 11107 #ifdef TARGET_NR_geteuid32 11108 case TARGET_NR_geteuid32: 11109 return get_errno(geteuid()); 11110 #endif 11111 #ifdef TARGET_NR_getegid32 11112 case TARGET_NR_getegid32: 11113 return get_errno(getegid()); 11114 #endif 11115 #ifdef TARGET_NR_setreuid32 11116 case TARGET_NR_setreuid32: 11117 return get_errno(setreuid(arg1, arg2)); 11118 #endif 11119 #ifdef TARGET_NR_setregid32 11120 case TARGET_NR_setregid32: 11121 return get_errno(setregid(arg1, arg2)); 11122 #endif 11123 #ifdef TARGET_NR_getgroups32 11124 case TARGET_NR_getgroups32: 11125 { 11126 int gidsetsize = arg1; 11127 uint32_t *target_grouplist; 11128 gid_t *grouplist; 11129 int i; 11130 11131 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11132 ret = get_errno(getgroups(gidsetsize, grouplist)); 11133 if (gidsetsize == 0) 11134 return ret; 11135 if (!is_error(ret)) { 11136 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11137 if (!target_grouplist) { 11138 return -TARGET_EFAULT; 11139 } 11140 for(i = 0;i < ret; i++) 11141 target_grouplist[i] = tswap32(grouplist[i]); 11142 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11143 } 11144 } 11145 return ret; 11146 #endif 11147 #ifdef TARGET_NR_setgroups32 11148 case TARGET_NR_setgroups32: 11149 { 11150 int gidsetsize = arg1; 11151 uint32_t *target_grouplist; 11152 gid_t *grouplist; 11153 int i; 11154 11155 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11156 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11157 if (!target_grouplist) { 11158 return -TARGET_EFAULT; 11159 } 11160 for(i = 0;i < gidsetsize; i++) 11161 grouplist[i] = tswap32(target_grouplist[i]); 11162 unlock_user(target_grouplist, arg2, 0); 11163 return get_errno(setgroups(gidsetsize, grouplist)); 11164 } 11165 #endif 11166 #ifdef TARGET_NR_fchown32 11167 case TARGET_NR_fchown32: 11168 return get_errno(fchown(arg1, arg2, arg3)); 11169 #endif 11170 #ifdef TARGET_NR_setresuid32 11171 case TARGET_NR_setresuid32: 11172 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11173 #endif 11174 #ifdef TARGET_NR_getresuid32 11175 case TARGET_NR_getresuid32: 11176 { 11177 uid_t ruid, euid, suid; 11178 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11179 if (!is_error(ret)) { 11180 if (put_user_u32(ruid, arg1) 11181 || put_user_u32(euid, arg2) 11182 || put_user_u32(suid, arg3)) 11183 return -TARGET_EFAULT; 11184 } 11185 } 11186 return ret; 11187 #endif 11188 #ifdef TARGET_NR_setresgid32 11189 case TARGET_NR_setresgid32: 11190 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11191 #endif 11192 #ifdef TARGET_NR_getresgid32 11193 case TARGET_NR_getresgid32: 11194 { 11195 gid_t rgid, egid, sgid; 11196 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11197 if (!is_error(ret)) { 11198 if (put_user_u32(rgid, arg1) 11199 || put_user_u32(egid, arg2) 11200 || put_user_u32(sgid, arg3)) 11201 return -TARGET_EFAULT; 11202 } 11203 } 11204 return ret; 11205 #endif 11206 #ifdef TARGET_NR_chown32 11207 case TARGET_NR_chown32: 11208 if (!(p = lock_user_string(arg1))) 11209 return -TARGET_EFAULT; 11210 ret = get_errno(chown(p, arg2, arg3)); 11211 unlock_user(p, arg1, 0); 11212 return ret; 11213 #endif 11214 #ifdef TARGET_NR_setuid32 11215 case TARGET_NR_setuid32: 11216 return get_errno(sys_setuid(arg1)); 11217 #endif 11218 #ifdef TARGET_NR_setgid32 11219 case TARGET_NR_setgid32: 11220 return get_errno(sys_setgid(arg1)); 11221 #endif 11222 #ifdef TARGET_NR_setfsuid32 11223 case TARGET_NR_setfsuid32: 11224 return get_errno(setfsuid(arg1)); 11225 #endif 11226 #ifdef TARGET_NR_setfsgid32 11227 case TARGET_NR_setfsgid32: 11228 return get_errno(setfsgid(arg1)); 11229 #endif 11230 #ifdef TARGET_NR_mincore 11231 case TARGET_NR_mincore: 11232 { 11233 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11234 if (!a) { 11235 return -TARGET_ENOMEM; 11236 } 11237 p = lock_user_string(arg3); 11238 if (!p) { 11239 ret = -TARGET_EFAULT; 11240 } else { 11241 ret = get_errno(mincore(a, arg2, p)); 11242 unlock_user(p, arg3, ret); 11243 } 11244 unlock_user(a, arg1, 0); 11245 } 11246 return ret; 11247 #endif 11248 #ifdef TARGET_NR_arm_fadvise64_64 11249 case TARGET_NR_arm_fadvise64_64: 11250 /* arm_fadvise64_64 looks like fadvise64_64 but 11251 * with different argument order: fd, advice, offset, len 11252 * rather than the usual fd, offset, len, advice. 11253 * Note that offset and len are both 64-bit so appear as 11254 * pairs of 32-bit registers. 11255 */ 11256 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11257 target_offset64(arg5, arg6), arg2); 11258 return -host_to_target_errno(ret); 11259 #endif 11260 11261 #if TARGET_ABI_BITS == 32 11262 11263 #ifdef TARGET_NR_fadvise64_64 11264 case TARGET_NR_fadvise64_64: 11265 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11266 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11267 ret = arg2; 11268 arg2 = arg3; 11269 arg3 = arg4; 11270 arg4 = arg5; 11271 arg5 = arg6; 11272 arg6 = ret; 11273 #else 11274 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11275 if (regpairs_aligned(cpu_env, num)) { 11276 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11277 arg2 = arg3; 11278 arg3 = arg4; 11279 arg4 = arg5; 11280 arg5 = arg6; 11281 arg6 = arg7; 11282 } 11283 #endif 11284 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11285 target_offset64(arg4, arg5), arg6); 11286 return -host_to_target_errno(ret); 11287 #endif 11288 11289 #ifdef TARGET_NR_fadvise64 11290 case TARGET_NR_fadvise64: 11291 /* 5 args: fd, offset (high, low), len, advice */ 11292 if (regpairs_aligned(cpu_env, num)) { 11293 /* offset is in (3,4), len in 5 and advice in 6 */ 11294 arg2 = arg3; 11295 arg3 = arg4; 11296 arg4 = arg5; 11297 arg5 = arg6; 11298 } 11299 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11300 return -host_to_target_errno(ret); 11301 #endif 11302 11303 #else /* not a 32-bit ABI */ 11304 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11305 #ifdef TARGET_NR_fadvise64_64 11306 case TARGET_NR_fadvise64_64: 11307 #endif 11308 #ifdef TARGET_NR_fadvise64 11309 case TARGET_NR_fadvise64: 11310 #endif 11311 #ifdef TARGET_S390X 11312 switch (arg4) { 11313 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11314 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11315 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11316 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11317 default: break; 11318 } 11319 #endif 11320 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11321 #endif 11322 #endif /* end of 64-bit ABI fadvise handling */ 11323 11324 #ifdef TARGET_NR_madvise 11325 case TARGET_NR_madvise: 11326 /* A straight passthrough may not be safe because qemu sometimes 11327 turns private file-backed mappings into anonymous mappings. 11328 This will break MADV_DONTNEED. 11329 This is a hint, so ignoring and returning success is ok. */ 11330 return 0; 11331 #endif 11332 #ifdef TARGET_NR_fcntl64 11333 case TARGET_NR_fcntl64: 11334 { 11335 int cmd; 11336 struct flock64 fl; 11337 from_flock64_fn *copyfrom = copy_from_user_flock64; 11338 to_flock64_fn *copyto = copy_to_user_flock64; 11339 11340 #ifdef TARGET_ARM 11341 if (!((CPUARMState *)cpu_env)->eabi) { 11342 copyfrom = copy_from_user_oabi_flock64; 11343 copyto = copy_to_user_oabi_flock64; 11344 } 11345 #endif 11346 11347 cmd = target_to_host_fcntl_cmd(arg2); 11348 if (cmd == -TARGET_EINVAL) { 11349 return cmd; 11350 } 11351 11352 switch(arg2) { 11353 case TARGET_F_GETLK64: 11354 ret = copyfrom(&fl, arg3); 11355 if (ret) { 11356 break; 11357 } 11358 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11359 if (ret == 0) { 11360 ret = copyto(arg3, &fl); 11361 } 11362 break; 11363 11364 case TARGET_F_SETLK64: 11365 case TARGET_F_SETLKW64: 11366 ret = copyfrom(&fl, arg3); 11367 if (ret) { 11368 break; 11369 } 11370 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11371 break; 11372 default: 11373 ret = do_fcntl(arg1, arg2, arg3); 11374 break; 11375 } 11376 return ret; 11377 } 11378 #endif 11379 #ifdef TARGET_NR_cacheflush 11380 case TARGET_NR_cacheflush: 11381 /* self-modifying code is handled automatically, so nothing needed */ 11382 return 0; 11383 #endif 11384 #ifdef TARGET_NR_getpagesize 11385 case TARGET_NR_getpagesize: 11386 return TARGET_PAGE_SIZE; 11387 #endif 11388 case TARGET_NR_gettid: 11389 return get_errno(sys_gettid()); 11390 #ifdef TARGET_NR_readahead 11391 case TARGET_NR_readahead: 11392 #if TARGET_ABI_BITS == 32 11393 if (regpairs_aligned(cpu_env, num)) { 11394 arg2 = arg3; 11395 arg3 = arg4; 11396 arg4 = arg5; 11397 } 11398 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11399 #else 11400 ret = get_errno(readahead(arg1, arg2, arg3)); 11401 #endif 11402 return ret; 11403 #endif 11404 #ifdef CONFIG_ATTR 11405 #ifdef TARGET_NR_setxattr 11406 case TARGET_NR_listxattr: 11407 case TARGET_NR_llistxattr: 11408 { 11409 void *p, *b = 0; 11410 if (arg2) { 11411 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11412 if (!b) { 11413 return -TARGET_EFAULT; 11414 } 11415 } 11416 p = lock_user_string(arg1); 11417 if (p) { 11418 if (num == TARGET_NR_listxattr) { 11419 ret = get_errno(listxattr(p, b, arg3)); 11420 } else { 11421 ret = get_errno(llistxattr(p, b, arg3)); 11422 } 11423 } else { 11424 ret = -TARGET_EFAULT; 11425 } 11426 unlock_user(p, arg1, 0); 11427 unlock_user(b, arg2, arg3); 11428 return ret; 11429 } 11430 case TARGET_NR_flistxattr: 11431 { 11432 void *b = 0; 11433 if (arg2) { 11434 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11435 if (!b) { 11436 return -TARGET_EFAULT; 11437 } 11438 } 11439 ret = get_errno(flistxattr(arg1, b, arg3)); 11440 unlock_user(b, arg2, arg3); 11441 return ret; 11442 } 11443 case TARGET_NR_setxattr: 11444 case TARGET_NR_lsetxattr: 11445 { 11446 void *p, *n, *v = 0; 11447 if (arg3) { 11448 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11449 if (!v) { 11450 return -TARGET_EFAULT; 11451 } 11452 } 11453 p = lock_user_string(arg1); 11454 n = lock_user_string(arg2); 11455 if (p && n) { 11456 if (num == TARGET_NR_setxattr) { 11457 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 11458 } else { 11459 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 11460 } 11461 } else { 11462 ret = -TARGET_EFAULT; 11463 } 11464 unlock_user(p, arg1, 0); 11465 unlock_user(n, arg2, 0); 11466 unlock_user(v, arg3, 0); 11467 } 11468 return ret; 11469 case TARGET_NR_fsetxattr: 11470 { 11471 void *n, *v = 0; 11472 if (arg3) { 11473 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11474 if (!v) { 11475 return -TARGET_EFAULT; 11476 } 11477 } 11478 n = lock_user_string(arg2); 11479 if (n) { 11480 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 11481 } else { 11482 ret = -TARGET_EFAULT; 11483 } 11484 unlock_user(n, arg2, 0); 11485 unlock_user(v, arg3, 0); 11486 } 11487 return ret; 11488 case TARGET_NR_getxattr: 11489 case TARGET_NR_lgetxattr: 11490 { 11491 void *p, *n, *v = 0; 11492 if (arg3) { 11493 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 11494 if (!v) { 11495 return -TARGET_EFAULT; 11496 } 11497 } 11498 p = lock_user_string(arg1); 11499 n = lock_user_string(arg2); 11500 if (p && n) { 11501 if (num == TARGET_NR_getxattr) { 11502 ret = get_errno(getxattr(p, n, v, arg4)); 11503 } else { 11504 ret = get_errno(lgetxattr(p, n, v, arg4)); 11505 } 11506 } else { 11507 ret = -TARGET_EFAULT; 11508 } 11509 unlock_user(p, arg1, 0); 11510 unlock_user(n, arg2, 0); 11511 unlock_user(v, arg3, arg4); 11512 } 11513 return ret; 11514 case TARGET_NR_fgetxattr: 11515 { 11516 void *n, *v = 0; 11517 if (arg3) { 11518 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 11519 if (!v) { 11520 return -TARGET_EFAULT; 11521 } 11522 } 11523 n = lock_user_string(arg2); 11524 if (n) { 11525 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 11526 } else { 11527 ret = -TARGET_EFAULT; 11528 } 11529 unlock_user(n, arg2, 0); 11530 unlock_user(v, arg3, arg4); 11531 } 11532 return ret; 11533 case TARGET_NR_removexattr: 11534 case TARGET_NR_lremovexattr: 11535 { 11536 void *p, *n; 11537 p = lock_user_string(arg1); 11538 n = lock_user_string(arg2); 11539 if (p && n) { 11540 if (num == TARGET_NR_removexattr) { 11541 ret = get_errno(removexattr(p, n)); 11542 } else { 11543 ret = get_errno(lremovexattr(p, n)); 11544 } 11545 } else { 11546 ret = -TARGET_EFAULT; 11547 } 11548 unlock_user(p, arg1, 0); 11549 unlock_user(n, arg2, 0); 11550 } 11551 return ret; 11552 case TARGET_NR_fremovexattr: 11553 { 11554 void *n; 11555 n = lock_user_string(arg2); 11556 if (n) { 11557 ret = get_errno(fremovexattr(arg1, n)); 11558 } else { 11559 ret = -TARGET_EFAULT; 11560 } 11561 unlock_user(n, arg2, 0); 11562 } 11563 return ret; 11564 #endif 11565 #endif /* CONFIG_ATTR */ 11566 #ifdef TARGET_NR_set_thread_area 11567 case TARGET_NR_set_thread_area: 11568 #if defined(TARGET_MIPS) 11569 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; 11570 return 0; 11571 #elif defined(TARGET_CRIS) 11572 if (arg1 & 0xff) 11573 ret = -TARGET_EINVAL; 11574 else { 11575 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; 11576 ret = 0; 11577 } 11578 return ret; 11579 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 11580 return do_set_thread_area(cpu_env, arg1); 11581 #elif defined(TARGET_M68K) 11582 { 11583 TaskState *ts = cpu->opaque; 11584 ts->tp_value = arg1; 11585 return 0; 11586 } 11587 #else 11588 return -TARGET_ENOSYS; 11589 #endif 11590 #endif 11591 #ifdef TARGET_NR_get_thread_area 11592 case TARGET_NR_get_thread_area: 11593 #if defined(TARGET_I386) && defined(TARGET_ABI32) 11594 return do_get_thread_area(cpu_env, arg1); 11595 #elif defined(TARGET_M68K) 11596 { 11597 TaskState *ts = cpu->opaque; 11598 return ts->tp_value; 11599 } 11600 #else 11601 return -TARGET_ENOSYS; 11602 #endif 11603 #endif 11604 #ifdef TARGET_NR_getdomainname 11605 case TARGET_NR_getdomainname: 11606 return -TARGET_ENOSYS; 11607 #endif 11608 11609 #ifdef TARGET_NR_clock_settime 11610 case TARGET_NR_clock_settime: 11611 { 11612 struct timespec ts; 11613 11614 ret = target_to_host_timespec(&ts, arg2); 11615 if (!is_error(ret)) { 11616 ret = get_errno(clock_settime(arg1, &ts)); 11617 } 11618 return ret; 11619 } 11620 #endif 11621 #ifdef TARGET_NR_clock_settime64 11622 case TARGET_NR_clock_settime64: 11623 { 11624 struct timespec ts; 11625 11626 ret = target_to_host_timespec64(&ts, arg2); 11627 if (!is_error(ret)) { 11628 ret = get_errno(clock_settime(arg1, &ts)); 11629 } 11630 return ret; 11631 } 11632 #endif 11633 #ifdef TARGET_NR_clock_gettime 11634 case TARGET_NR_clock_gettime: 11635 { 11636 struct timespec ts; 11637 ret = get_errno(clock_gettime(arg1, &ts)); 11638 if (!is_error(ret)) { 11639 ret = host_to_target_timespec(arg2, &ts); 11640 } 11641 return ret; 11642 } 11643 #endif 11644 #ifdef TARGET_NR_clock_gettime64 11645 case TARGET_NR_clock_gettime64: 11646 { 11647 struct timespec ts; 11648 ret = get_errno(clock_gettime(arg1, &ts)); 11649 if (!is_error(ret)) { 11650 ret = host_to_target_timespec64(arg2, &ts); 11651 } 11652 return ret; 11653 } 11654 #endif 11655 #ifdef TARGET_NR_clock_getres 11656 case TARGET_NR_clock_getres: 11657 { 11658 struct timespec ts; 11659 ret = get_errno(clock_getres(arg1, &ts)); 11660 if (!is_error(ret)) { 11661 host_to_target_timespec(arg2, &ts); 11662 } 11663 return ret; 11664 } 11665 #endif 11666 #ifdef TARGET_NR_clock_nanosleep 11667 case TARGET_NR_clock_nanosleep: 11668 { 11669 struct timespec ts; 11670 target_to_host_timespec(&ts, arg3); 11671 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 11672 &ts, arg4 ? &ts : NULL)); 11673 if (arg4) 11674 host_to_target_timespec(arg4, &ts); 11675 11676 #if defined(TARGET_PPC) 11677 /* clock_nanosleep is odd in that it returns positive errno values. 11678 * On PPC, CR0 bit 3 should be set in such a situation. */ 11679 if (ret && ret != -TARGET_ERESTARTSYS) { 11680 ((CPUPPCState *)cpu_env)->crf[0] |= 1; 11681 } 11682 #endif 11683 return ret; 11684 } 11685 #endif 11686 11687 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 11688 case TARGET_NR_set_tid_address: 11689 return get_errno(set_tid_address((int *)g2h(arg1))); 11690 #endif 11691 11692 case TARGET_NR_tkill: 11693 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 11694 11695 case TARGET_NR_tgkill: 11696 return get_errno(safe_tgkill((int)arg1, (int)arg2, 11697 target_to_host_signal(arg3))); 11698 11699 #ifdef TARGET_NR_set_robust_list 11700 case TARGET_NR_set_robust_list: 11701 case TARGET_NR_get_robust_list: 11702 /* The ABI for supporting robust futexes has userspace pass 11703 * the kernel a pointer to a linked list which is updated by 11704 * userspace after the syscall; the list is walked by the kernel 11705 * when the thread exits. Since the linked list in QEMU guest 11706 * memory isn't a valid linked list for the host and we have 11707 * no way to reliably intercept the thread-death event, we can't 11708 * support these. Silently return ENOSYS so that guest userspace 11709 * falls back to a non-robust futex implementation (which should 11710 * be OK except in the corner case of the guest crashing while 11711 * holding a mutex that is shared with another process via 11712 * shared memory). 11713 */ 11714 return -TARGET_ENOSYS; 11715 #endif 11716 11717 #if defined(TARGET_NR_utimensat) 11718 case TARGET_NR_utimensat: 11719 { 11720 struct timespec *tsp, ts[2]; 11721 if (!arg3) { 11722 tsp = NULL; 11723 } else { 11724 target_to_host_timespec(ts, arg3); 11725 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec)); 11726 tsp = ts; 11727 } 11728 if (!arg2) 11729 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 11730 else { 11731 if (!(p = lock_user_string(arg2))) { 11732 return -TARGET_EFAULT; 11733 } 11734 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 11735 unlock_user(p, arg2, 0); 11736 } 11737 } 11738 return ret; 11739 #endif 11740 #ifdef TARGET_NR_futex 11741 case TARGET_NR_futex: 11742 return do_futex(arg1, arg2, arg3, arg4, arg5, arg6); 11743 #endif 11744 #ifdef TARGET_NR_futex_time64 11745 case TARGET_NR_futex_time64: 11746 return do_futex_time64(arg1, arg2, arg3, arg4, arg5, arg6); 11747 #endif 11748 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 11749 case TARGET_NR_inotify_init: 11750 ret = get_errno(sys_inotify_init()); 11751 if (ret >= 0) { 11752 fd_trans_register(ret, &target_inotify_trans); 11753 } 11754 return ret; 11755 #endif 11756 #ifdef CONFIG_INOTIFY1 11757 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 11758 case TARGET_NR_inotify_init1: 11759 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1, 11760 fcntl_flags_tbl))); 11761 if (ret >= 0) { 11762 fd_trans_register(ret, &target_inotify_trans); 11763 } 11764 return ret; 11765 #endif 11766 #endif 11767 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 11768 case TARGET_NR_inotify_add_watch: 11769 p = lock_user_string(arg2); 11770 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); 11771 unlock_user(p, arg2, 0); 11772 return ret; 11773 #endif 11774 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 11775 case TARGET_NR_inotify_rm_watch: 11776 return get_errno(sys_inotify_rm_watch(arg1, arg2)); 11777 #endif 11778 11779 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 11780 case TARGET_NR_mq_open: 11781 { 11782 struct mq_attr posix_mq_attr; 11783 struct mq_attr *pposix_mq_attr; 11784 int host_flags; 11785 11786 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 11787 pposix_mq_attr = NULL; 11788 if (arg4) { 11789 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 11790 return -TARGET_EFAULT; 11791 } 11792 pposix_mq_attr = &posix_mq_attr; 11793 } 11794 p = lock_user_string(arg1 - 1); 11795 if (!p) { 11796 return -TARGET_EFAULT; 11797 } 11798 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 11799 unlock_user (p, arg1, 0); 11800 } 11801 return ret; 11802 11803 case TARGET_NR_mq_unlink: 11804 p = lock_user_string(arg1 - 1); 11805 if (!p) { 11806 return -TARGET_EFAULT; 11807 } 11808 ret = get_errno(mq_unlink(p)); 11809 unlock_user (p, arg1, 0); 11810 return ret; 11811 11812 #ifdef TARGET_NR_mq_timedsend 11813 case TARGET_NR_mq_timedsend: 11814 { 11815 struct timespec ts; 11816 11817 p = lock_user (VERIFY_READ, arg2, arg3, 1); 11818 if (arg5 != 0) { 11819 target_to_host_timespec(&ts, arg5); 11820 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 11821 host_to_target_timespec(arg5, &ts); 11822 } else { 11823 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 11824 } 11825 unlock_user (p, arg2, arg3); 11826 } 11827 return ret; 11828 #endif 11829 11830 #ifdef TARGET_NR_mq_timedreceive 11831 case TARGET_NR_mq_timedreceive: 11832 { 11833 struct timespec ts; 11834 unsigned int prio; 11835 11836 p = lock_user (VERIFY_READ, arg2, arg3, 1); 11837 if (arg5 != 0) { 11838 target_to_host_timespec(&ts, arg5); 11839 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 11840 &prio, &ts)); 11841 host_to_target_timespec(arg5, &ts); 11842 } else { 11843 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 11844 &prio, NULL)); 11845 } 11846 unlock_user (p, arg2, arg3); 11847 if (arg4 != 0) 11848 put_user_u32(prio, arg4); 11849 } 11850 return ret; 11851 #endif 11852 11853 /* Not implemented for now... */ 11854 /* case TARGET_NR_mq_notify: */ 11855 /* break; */ 11856 11857 case TARGET_NR_mq_getsetattr: 11858 { 11859 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 11860 ret = 0; 11861 if (arg2 != 0) { 11862 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 11863 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 11864 &posix_mq_attr_out)); 11865 } else if (arg3 != 0) { 11866 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 11867 } 11868 if (ret == 0 && arg3 != 0) { 11869 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 11870 } 11871 } 11872 return ret; 11873 #endif 11874 11875 #ifdef CONFIG_SPLICE 11876 #ifdef TARGET_NR_tee 11877 case TARGET_NR_tee: 11878 { 11879 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 11880 } 11881 return ret; 11882 #endif 11883 #ifdef TARGET_NR_splice 11884 case TARGET_NR_splice: 11885 { 11886 loff_t loff_in, loff_out; 11887 loff_t *ploff_in = NULL, *ploff_out = NULL; 11888 if (arg2) { 11889 if (get_user_u64(loff_in, arg2)) { 11890 return -TARGET_EFAULT; 11891 } 11892 ploff_in = &loff_in; 11893 } 11894 if (arg4) { 11895 if (get_user_u64(loff_out, arg4)) { 11896 return -TARGET_EFAULT; 11897 } 11898 ploff_out = &loff_out; 11899 } 11900 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 11901 if (arg2) { 11902 if (put_user_u64(loff_in, arg2)) { 11903 return -TARGET_EFAULT; 11904 } 11905 } 11906 if (arg4) { 11907 if (put_user_u64(loff_out, arg4)) { 11908 return -TARGET_EFAULT; 11909 } 11910 } 11911 } 11912 return ret; 11913 #endif 11914 #ifdef TARGET_NR_vmsplice 11915 case TARGET_NR_vmsplice: 11916 { 11917 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 11918 if (vec != NULL) { 11919 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 11920 unlock_iovec(vec, arg2, arg3, 0); 11921 } else { 11922 ret = -host_to_target_errno(errno); 11923 } 11924 } 11925 return ret; 11926 #endif 11927 #endif /* CONFIG_SPLICE */ 11928 #ifdef CONFIG_EVENTFD 11929 #if defined(TARGET_NR_eventfd) 11930 case TARGET_NR_eventfd: 11931 ret = get_errno(eventfd(arg1, 0)); 11932 if (ret >= 0) { 11933 fd_trans_register(ret, &target_eventfd_trans); 11934 } 11935 return ret; 11936 #endif 11937 #if defined(TARGET_NR_eventfd2) 11938 case TARGET_NR_eventfd2: 11939 { 11940 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)); 11941 if (arg2 & TARGET_O_NONBLOCK) { 11942 host_flags |= O_NONBLOCK; 11943 } 11944 if (arg2 & TARGET_O_CLOEXEC) { 11945 host_flags |= O_CLOEXEC; 11946 } 11947 ret = get_errno(eventfd(arg1, host_flags)); 11948 if (ret >= 0) { 11949 fd_trans_register(ret, &target_eventfd_trans); 11950 } 11951 return ret; 11952 } 11953 #endif 11954 #endif /* CONFIG_EVENTFD */ 11955 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 11956 case TARGET_NR_fallocate: 11957 #if TARGET_ABI_BITS == 32 11958 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 11959 target_offset64(arg5, arg6))); 11960 #else 11961 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 11962 #endif 11963 return ret; 11964 #endif 11965 #if defined(CONFIG_SYNC_FILE_RANGE) 11966 #if defined(TARGET_NR_sync_file_range) 11967 case TARGET_NR_sync_file_range: 11968 #if TARGET_ABI_BITS == 32 11969 #if defined(TARGET_MIPS) 11970 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 11971 target_offset64(arg5, arg6), arg7)); 11972 #else 11973 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 11974 target_offset64(arg4, arg5), arg6)); 11975 #endif /* !TARGET_MIPS */ 11976 #else 11977 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 11978 #endif 11979 return ret; 11980 #endif 11981 #if defined(TARGET_NR_sync_file_range2) || \ 11982 defined(TARGET_NR_arm_sync_file_range) 11983 #if defined(TARGET_NR_sync_file_range2) 11984 case TARGET_NR_sync_file_range2: 11985 #endif 11986 #if defined(TARGET_NR_arm_sync_file_range) 11987 case TARGET_NR_arm_sync_file_range: 11988 #endif 11989 /* This is like sync_file_range but the arguments are reordered */ 11990 #if TARGET_ABI_BITS == 32 11991 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 11992 target_offset64(arg5, arg6), arg2)); 11993 #else 11994 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 11995 #endif 11996 return ret; 11997 #endif 11998 #endif 11999 #if defined(TARGET_NR_signalfd4) 12000 case TARGET_NR_signalfd4: 12001 return do_signalfd4(arg1, arg2, arg4); 12002 #endif 12003 #if defined(TARGET_NR_signalfd) 12004 case TARGET_NR_signalfd: 12005 return do_signalfd4(arg1, arg2, 0); 12006 #endif 12007 #if defined(CONFIG_EPOLL) 12008 #if defined(TARGET_NR_epoll_create) 12009 case TARGET_NR_epoll_create: 12010 return get_errno(epoll_create(arg1)); 12011 #endif 12012 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12013 case TARGET_NR_epoll_create1: 12014 return get_errno(epoll_create1(arg1)); 12015 #endif 12016 #if defined(TARGET_NR_epoll_ctl) 12017 case TARGET_NR_epoll_ctl: 12018 { 12019 struct epoll_event ep; 12020 struct epoll_event *epp = 0; 12021 if (arg4) { 12022 struct target_epoll_event *target_ep; 12023 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12024 return -TARGET_EFAULT; 12025 } 12026 ep.events = tswap32(target_ep->events); 12027 /* The epoll_data_t union is just opaque data to the kernel, 12028 * so we transfer all 64 bits across and need not worry what 12029 * actual data type it is. 12030 */ 12031 ep.data.u64 = tswap64(target_ep->data.u64); 12032 unlock_user_struct(target_ep, arg4, 0); 12033 epp = &ep; 12034 } 12035 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12036 } 12037 #endif 12038 12039 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12040 #if defined(TARGET_NR_epoll_wait) 12041 case TARGET_NR_epoll_wait: 12042 #endif 12043 #if defined(TARGET_NR_epoll_pwait) 12044 case TARGET_NR_epoll_pwait: 12045 #endif 12046 { 12047 struct target_epoll_event *target_ep; 12048 struct epoll_event *ep; 12049 int epfd = arg1; 12050 int maxevents = arg3; 12051 int timeout = arg4; 12052 12053 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12054 return -TARGET_EINVAL; 12055 } 12056 12057 target_ep = lock_user(VERIFY_WRITE, arg2, 12058 maxevents * sizeof(struct target_epoll_event), 1); 12059 if (!target_ep) { 12060 return -TARGET_EFAULT; 12061 } 12062 12063 ep = g_try_new(struct epoll_event, maxevents); 12064 if (!ep) { 12065 unlock_user(target_ep, arg2, 0); 12066 return -TARGET_ENOMEM; 12067 } 12068 12069 switch (num) { 12070 #if defined(TARGET_NR_epoll_pwait) 12071 case TARGET_NR_epoll_pwait: 12072 { 12073 target_sigset_t *target_set; 12074 sigset_t _set, *set = &_set; 12075 12076 if (arg5) { 12077 if (arg6 != sizeof(target_sigset_t)) { 12078 ret = -TARGET_EINVAL; 12079 break; 12080 } 12081 12082 target_set = lock_user(VERIFY_READ, arg5, 12083 sizeof(target_sigset_t), 1); 12084 if (!target_set) { 12085 ret = -TARGET_EFAULT; 12086 break; 12087 } 12088 target_to_host_sigset(set, target_set); 12089 unlock_user(target_set, arg5, 0); 12090 } else { 12091 set = NULL; 12092 } 12093 12094 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12095 set, SIGSET_T_SIZE)); 12096 break; 12097 } 12098 #endif 12099 #if defined(TARGET_NR_epoll_wait) 12100 case TARGET_NR_epoll_wait: 12101 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12102 NULL, 0)); 12103 break; 12104 #endif 12105 default: 12106 ret = -TARGET_ENOSYS; 12107 } 12108 if (!is_error(ret)) { 12109 int i; 12110 for (i = 0; i < ret; i++) { 12111 target_ep[i].events = tswap32(ep[i].events); 12112 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12113 } 12114 unlock_user(target_ep, arg2, 12115 ret * sizeof(struct target_epoll_event)); 12116 } else { 12117 unlock_user(target_ep, arg2, 0); 12118 } 12119 g_free(ep); 12120 return ret; 12121 } 12122 #endif 12123 #endif 12124 #ifdef TARGET_NR_prlimit64 12125 case TARGET_NR_prlimit64: 12126 { 12127 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12128 struct target_rlimit64 *target_rnew, *target_rold; 12129 struct host_rlimit64 rnew, rold, *rnewp = 0; 12130 int resource = target_to_host_resource(arg2); 12131 12132 if (arg3 && (resource != RLIMIT_AS && 12133 resource != RLIMIT_DATA && 12134 resource != RLIMIT_STACK)) { 12135 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12136 return -TARGET_EFAULT; 12137 } 12138 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12139 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12140 unlock_user_struct(target_rnew, arg3, 0); 12141 rnewp = &rnew; 12142 } 12143 12144 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12145 if (!is_error(ret) && arg4) { 12146 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12147 return -TARGET_EFAULT; 12148 } 12149 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12150 target_rold->rlim_max = tswap64(rold.rlim_max); 12151 unlock_user_struct(target_rold, arg4, 1); 12152 } 12153 return ret; 12154 } 12155 #endif 12156 #ifdef TARGET_NR_gethostname 12157 case TARGET_NR_gethostname: 12158 { 12159 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12160 if (name) { 12161 ret = get_errno(gethostname(name, arg2)); 12162 unlock_user(name, arg1, arg2); 12163 } else { 12164 ret = -TARGET_EFAULT; 12165 } 12166 return ret; 12167 } 12168 #endif 12169 #ifdef TARGET_NR_atomic_cmpxchg_32 12170 case TARGET_NR_atomic_cmpxchg_32: 12171 { 12172 /* should use start_exclusive from main.c */ 12173 abi_ulong mem_value; 12174 if (get_user_u32(mem_value, arg6)) { 12175 target_siginfo_t info; 12176 info.si_signo = SIGSEGV; 12177 info.si_errno = 0; 12178 info.si_code = TARGET_SEGV_MAPERR; 12179 info._sifields._sigfault._addr = arg6; 12180 queue_signal((CPUArchState *)cpu_env, info.si_signo, 12181 QEMU_SI_FAULT, &info); 12182 ret = 0xdeadbeef; 12183 12184 } 12185 if (mem_value == arg2) 12186 put_user_u32(arg1, arg6); 12187 return mem_value; 12188 } 12189 #endif 12190 #ifdef TARGET_NR_atomic_barrier 12191 case TARGET_NR_atomic_barrier: 12192 /* Like the kernel implementation and the 12193 qemu arm barrier, no-op this? */ 12194 return 0; 12195 #endif 12196 12197 #ifdef TARGET_NR_timer_create 12198 case TARGET_NR_timer_create: 12199 { 12200 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12201 12202 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12203 12204 int clkid = arg1; 12205 int timer_index = next_free_host_timer(); 12206 12207 if (timer_index < 0) { 12208 ret = -TARGET_EAGAIN; 12209 } else { 12210 timer_t *phtimer = g_posix_timers + timer_index; 12211 12212 if (arg2) { 12213 phost_sevp = &host_sevp; 12214 ret = target_to_host_sigevent(phost_sevp, arg2); 12215 if (ret != 0) { 12216 return ret; 12217 } 12218 } 12219 12220 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12221 if (ret) { 12222 phtimer = NULL; 12223 } else { 12224 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12225 return -TARGET_EFAULT; 12226 } 12227 } 12228 } 12229 return ret; 12230 } 12231 #endif 12232 12233 #ifdef TARGET_NR_timer_settime 12234 case TARGET_NR_timer_settime: 12235 { 12236 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12237 * struct itimerspec * old_value */ 12238 target_timer_t timerid = get_timer_id(arg1); 12239 12240 if (timerid < 0) { 12241 ret = timerid; 12242 } else if (arg3 == 0) { 12243 ret = -TARGET_EINVAL; 12244 } else { 12245 timer_t htimer = g_posix_timers[timerid]; 12246 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12247 12248 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12249 return -TARGET_EFAULT; 12250 } 12251 ret = get_errno( 12252 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12253 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12254 return -TARGET_EFAULT; 12255 } 12256 } 12257 return ret; 12258 } 12259 #endif 12260 12261 #ifdef TARGET_NR_timer_gettime 12262 case TARGET_NR_timer_gettime: 12263 { 12264 /* args: timer_t timerid, struct itimerspec *curr_value */ 12265 target_timer_t timerid = get_timer_id(arg1); 12266 12267 if (timerid < 0) { 12268 ret = timerid; 12269 } else if (!arg2) { 12270 ret = -TARGET_EFAULT; 12271 } else { 12272 timer_t htimer = g_posix_timers[timerid]; 12273 struct itimerspec hspec; 12274 ret = get_errno(timer_gettime(htimer, &hspec)); 12275 12276 if (host_to_target_itimerspec(arg2, &hspec)) { 12277 ret = -TARGET_EFAULT; 12278 } 12279 } 12280 return ret; 12281 } 12282 #endif 12283 12284 #ifdef TARGET_NR_timer_getoverrun 12285 case TARGET_NR_timer_getoverrun: 12286 { 12287 /* args: timer_t timerid */ 12288 target_timer_t timerid = get_timer_id(arg1); 12289 12290 if (timerid < 0) { 12291 ret = timerid; 12292 } else { 12293 timer_t htimer = g_posix_timers[timerid]; 12294 ret = get_errno(timer_getoverrun(htimer)); 12295 } 12296 return ret; 12297 } 12298 #endif 12299 12300 #ifdef TARGET_NR_timer_delete 12301 case TARGET_NR_timer_delete: 12302 { 12303 /* args: timer_t timerid */ 12304 target_timer_t timerid = get_timer_id(arg1); 12305 12306 if (timerid < 0) { 12307 ret = timerid; 12308 } else { 12309 timer_t htimer = g_posix_timers[timerid]; 12310 ret = get_errno(timer_delete(htimer)); 12311 g_posix_timers[timerid] = 0; 12312 } 12313 return ret; 12314 } 12315 #endif 12316 12317 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 12318 case TARGET_NR_timerfd_create: 12319 return get_errno(timerfd_create(arg1, 12320 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 12321 #endif 12322 12323 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 12324 case TARGET_NR_timerfd_gettime: 12325 { 12326 struct itimerspec its_curr; 12327 12328 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 12329 12330 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 12331 return -TARGET_EFAULT; 12332 } 12333 } 12334 return ret; 12335 #endif 12336 12337 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 12338 case TARGET_NR_timerfd_settime: 12339 { 12340 struct itimerspec its_new, its_old, *p_new; 12341 12342 if (arg3) { 12343 if (target_to_host_itimerspec(&its_new, arg3)) { 12344 return -TARGET_EFAULT; 12345 } 12346 p_new = &its_new; 12347 } else { 12348 p_new = NULL; 12349 } 12350 12351 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 12352 12353 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 12354 return -TARGET_EFAULT; 12355 } 12356 } 12357 return ret; 12358 #endif 12359 12360 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 12361 case TARGET_NR_ioprio_get: 12362 return get_errno(ioprio_get(arg1, arg2)); 12363 #endif 12364 12365 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 12366 case TARGET_NR_ioprio_set: 12367 return get_errno(ioprio_set(arg1, arg2, arg3)); 12368 #endif 12369 12370 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 12371 case TARGET_NR_setns: 12372 return get_errno(setns(arg1, arg2)); 12373 #endif 12374 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 12375 case TARGET_NR_unshare: 12376 return get_errno(unshare(arg1)); 12377 #endif 12378 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 12379 case TARGET_NR_kcmp: 12380 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 12381 #endif 12382 #ifdef TARGET_NR_swapcontext 12383 case TARGET_NR_swapcontext: 12384 /* PowerPC specific. */ 12385 return do_swapcontext(cpu_env, arg1, arg2, arg3); 12386 #endif 12387 #ifdef TARGET_NR_memfd_create 12388 case TARGET_NR_memfd_create: 12389 p = lock_user_string(arg1); 12390 if (!p) { 12391 return -TARGET_EFAULT; 12392 } 12393 ret = get_errno(memfd_create(p, arg2)); 12394 fd_trans_unregister(ret); 12395 unlock_user(p, arg1, 0); 12396 return ret; 12397 #endif 12398 #if defined TARGET_NR_membarrier && defined __NR_membarrier 12399 case TARGET_NR_membarrier: 12400 return get_errno(membarrier(arg1, arg2)); 12401 #endif 12402 12403 default: 12404 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 12405 return -TARGET_ENOSYS; 12406 } 12407 return ret; 12408 } 12409 12410 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 12411 abi_long arg2, abi_long arg3, abi_long arg4, 12412 abi_long arg5, abi_long arg6, abi_long arg7, 12413 abi_long arg8) 12414 { 12415 CPUState *cpu = env_cpu(cpu_env); 12416 abi_long ret; 12417 12418 #ifdef DEBUG_ERESTARTSYS 12419 /* Debug-only code for exercising the syscall-restart code paths 12420 * in the per-architecture cpu main loops: restart every syscall 12421 * the guest makes once before letting it through. 12422 */ 12423 { 12424 static bool flag; 12425 flag = !flag; 12426 if (flag) { 12427 return -TARGET_ERESTARTSYS; 12428 } 12429 } 12430 #endif 12431 12432 record_syscall_start(cpu, num, arg1, 12433 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 12434 12435 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 12436 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); 12437 } 12438 12439 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 12440 arg5, arg6, arg7, arg8); 12441 12442 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 12443 print_syscall_ret(num, ret); 12444 } 12445 12446 record_syscall_return(cpu, num, ret); 12447 return ret; 12448 } 12449