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 <stdlib.h> 21 #include <stdio.h> 22 #include <stdarg.h> 23 #include <string.h> 24 #include <elf.h> 25 #include <endian.h> 26 #include <errno.h> 27 #include <unistd.h> 28 #include <fcntl.h> 29 #include <time.h> 30 #include <limits.h> 31 #include <grp.h> 32 #include <sys/types.h> 33 #include <sys/ipc.h> 34 #include <sys/msg.h> 35 #include <sys/wait.h> 36 #include <sys/time.h> 37 #include <sys/stat.h> 38 #include <sys/mount.h> 39 #include <sys/file.h> 40 #include <sys/fsuid.h> 41 #include <sys/personality.h> 42 #include <sys/prctl.h> 43 #include <sys/resource.h> 44 #include <sys/mman.h> 45 #include <sys/swap.h> 46 #include <linux/capability.h> 47 #include <signal.h> 48 #include <sched.h> 49 #ifdef __ia64__ 50 int __clone2(int (*fn)(void *), void *child_stack_base, 51 size_t stack_size, int flags, void *arg, ...); 52 #endif 53 #include <sys/socket.h> 54 #include <sys/un.h> 55 #include <sys/uio.h> 56 #include <sys/poll.h> 57 #include <sys/times.h> 58 #include <sys/shm.h> 59 #include <sys/sem.h> 60 #include <sys/statfs.h> 61 #include <utime.h> 62 #include <sys/sysinfo.h> 63 //#include <sys/user.h> 64 #include <netinet/ip.h> 65 #include <netinet/tcp.h> 66 #include <linux/wireless.h> 67 #include <linux/icmp.h> 68 #include "qemu-common.h" 69 #ifdef CONFIG_TIMERFD 70 #include <sys/timerfd.h> 71 #endif 72 #ifdef TARGET_GPROF 73 #include <sys/gmon.h> 74 #endif 75 #ifdef CONFIG_EVENTFD 76 #include <sys/eventfd.h> 77 #endif 78 #ifdef CONFIG_EPOLL 79 #include <sys/epoll.h> 80 #endif 81 #ifdef CONFIG_ATTR 82 #include "qemu/xattr.h" 83 #endif 84 #ifdef CONFIG_SENDFILE 85 #include <sys/sendfile.h> 86 #endif 87 88 #define termios host_termios 89 #define winsize host_winsize 90 #define termio host_termio 91 #define sgttyb host_sgttyb /* same as target */ 92 #define tchars host_tchars /* same as target */ 93 #define ltchars host_ltchars /* same as target */ 94 95 #include <linux/termios.h> 96 #include <linux/unistd.h> 97 #include <linux/cdrom.h> 98 #include <linux/hdreg.h> 99 #include <linux/soundcard.h> 100 #include <linux/kd.h> 101 #include <linux/mtio.h> 102 #include <linux/fs.h> 103 #if defined(CONFIG_FIEMAP) 104 #include <linux/fiemap.h> 105 #endif 106 #include <linux/fb.h> 107 #include <linux/vt.h> 108 #include <linux/dm-ioctl.h> 109 #include <linux/reboot.h> 110 #include <linux/route.h> 111 #include <linux/filter.h> 112 #include <linux/blkpg.h> 113 #include "linux_loop.h" 114 #include "uname.h" 115 116 #include "qemu.h" 117 118 #define CLONE_NPTL_FLAGS2 (CLONE_SETTLS | \ 119 CLONE_PARENT_SETTID | CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID) 120 121 //#define DEBUG 122 123 //#include <linux/msdos_fs.h> 124 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) 125 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) 126 127 128 #undef _syscall0 129 #undef _syscall1 130 #undef _syscall2 131 #undef _syscall3 132 #undef _syscall4 133 #undef _syscall5 134 #undef _syscall6 135 136 #define _syscall0(type,name) \ 137 static type name (void) \ 138 { \ 139 return syscall(__NR_##name); \ 140 } 141 142 #define _syscall1(type,name,type1,arg1) \ 143 static type name (type1 arg1) \ 144 { \ 145 return syscall(__NR_##name, arg1); \ 146 } 147 148 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 149 static type name (type1 arg1,type2 arg2) \ 150 { \ 151 return syscall(__NR_##name, arg1, arg2); \ 152 } 153 154 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 155 static type name (type1 arg1,type2 arg2,type3 arg3) \ 156 { \ 157 return syscall(__NR_##name, arg1, arg2, arg3); \ 158 } 159 160 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 161 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 162 { \ 163 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 164 } 165 166 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 167 type5,arg5) \ 168 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 169 { \ 170 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 171 } 172 173 174 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 175 type5,arg5,type6,arg6) \ 176 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 177 type6 arg6) \ 178 { \ 179 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 180 } 181 182 183 #define __NR_sys_uname __NR_uname 184 #define __NR_sys_getcwd1 __NR_getcwd 185 #define __NR_sys_getdents __NR_getdents 186 #define __NR_sys_getdents64 __NR_getdents64 187 #define __NR_sys_getpriority __NR_getpriority 188 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 189 #define __NR_sys_syslog __NR_syslog 190 #define __NR_sys_tgkill __NR_tgkill 191 #define __NR_sys_tkill __NR_tkill 192 #define __NR_sys_futex __NR_futex 193 #define __NR_sys_inotify_init __NR_inotify_init 194 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch 195 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch 196 197 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__) || \ 198 defined(__s390x__) 199 #define __NR__llseek __NR_lseek 200 #endif 201 202 /* Newer kernel ports have llseek() instead of _llseek() */ 203 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 204 #define TARGET_NR__llseek TARGET_NR_llseek 205 #endif 206 207 #ifdef __NR_gettid 208 _syscall0(int, gettid) 209 #else 210 /* This is a replacement for the host gettid() and must return a host 211 errno. */ 212 static int gettid(void) { 213 return -ENOSYS; 214 } 215 #endif 216 #if defined(TARGET_NR_getdents) && defined(__NR_getdents) 217 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 218 #endif 219 #if !defined(__NR_getdents) || \ 220 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 221 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 222 #endif 223 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 224 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 225 loff_t *, res, uint, wh); 226 #endif 227 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo) 228 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 229 #if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) 230 _syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig) 231 #endif 232 #if defined(TARGET_NR_tkill) && defined(__NR_tkill) 233 _syscall2(int,sys_tkill,int,tid,int,sig) 234 #endif 235 #ifdef __NR_exit_group 236 _syscall1(int,exit_group,int,error_code) 237 #endif 238 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 239 _syscall1(int,set_tid_address,int *,tidptr) 240 #endif 241 #if defined(TARGET_NR_futex) && defined(__NR_futex) 242 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 243 const struct timespec *,timeout,int *,uaddr2,int,val3) 244 #endif 245 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 246 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 247 unsigned long *, user_mask_ptr); 248 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 249 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 250 unsigned long *, user_mask_ptr); 251 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 252 void *, arg); 253 _syscall2(int, capget, struct __user_cap_header_struct *, header, 254 struct __user_cap_data_struct *, data); 255 _syscall2(int, capset, struct __user_cap_header_struct *, header, 256 struct __user_cap_data_struct *, data); 257 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 258 _syscall2(int, ioprio_get, int, which, int, who) 259 #endif 260 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 261 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 262 #endif 263 264 static bitmask_transtbl fcntl_flags_tbl[] = { 265 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 266 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 267 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 268 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 269 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 270 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 271 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 272 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 273 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 274 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 275 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 276 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 277 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 278 #if defined(O_DIRECT) 279 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 280 #endif 281 #if defined(O_NOATIME) 282 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 283 #endif 284 #if defined(O_CLOEXEC) 285 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 286 #endif 287 #if defined(O_PATH) 288 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 289 #endif 290 /* Don't terminate the list prematurely on 64-bit host+guest. */ 291 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 292 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 293 #endif 294 { 0, 0, 0, 0 } 295 }; 296 297 static int sys_getcwd1(char *buf, size_t size) 298 { 299 if (getcwd(buf, size) == NULL) { 300 /* getcwd() sets errno */ 301 return (-1); 302 } 303 return strlen(buf)+1; 304 } 305 306 static int sys_openat(int dirfd, const char *pathname, int flags, mode_t mode) 307 { 308 /* 309 * open(2) has extra parameter 'mode' when called with 310 * flag O_CREAT. 311 */ 312 if ((flags & O_CREAT) != 0) { 313 return (openat(dirfd, pathname, flags, mode)); 314 } 315 return (openat(dirfd, pathname, flags)); 316 } 317 318 #ifdef TARGET_NR_utimensat 319 #ifdef CONFIG_UTIMENSAT 320 static int sys_utimensat(int dirfd, const char *pathname, 321 const struct timespec times[2], int flags) 322 { 323 if (pathname == NULL) 324 return futimens(dirfd, times); 325 else 326 return utimensat(dirfd, pathname, times, flags); 327 } 328 #elif defined(__NR_utimensat) 329 #define __NR_sys_utimensat __NR_utimensat 330 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 331 const struct timespec *,tsp,int,flags) 332 #else 333 static int sys_utimensat(int dirfd, const char *pathname, 334 const struct timespec times[2], int flags) 335 { 336 errno = ENOSYS; 337 return -1; 338 } 339 #endif 340 #endif /* TARGET_NR_utimensat */ 341 342 #ifdef CONFIG_INOTIFY 343 #include <sys/inotify.h> 344 345 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 346 static int sys_inotify_init(void) 347 { 348 return (inotify_init()); 349 } 350 #endif 351 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 352 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask) 353 { 354 return (inotify_add_watch(fd, pathname, mask)); 355 } 356 #endif 357 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 358 static int sys_inotify_rm_watch(int fd, int32_t wd) 359 { 360 return (inotify_rm_watch(fd, wd)); 361 } 362 #endif 363 #ifdef CONFIG_INOTIFY1 364 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 365 static int sys_inotify_init1(int flags) 366 { 367 return (inotify_init1(flags)); 368 } 369 #endif 370 #endif 371 #else 372 /* Userspace can usually survive runtime without inotify */ 373 #undef TARGET_NR_inotify_init 374 #undef TARGET_NR_inotify_init1 375 #undef TARGET_NR_inotify_add_watch 376 #undef TARGET_NR_inotify_rm_watch 377 #endif /* CONFIG_INOTIFY */ 378 379 #if defined(TARGET_NR_ppoll) 380 #ifndef __NR_ppoll 381 # define __NR_ppoll -1 382 #endif 383 #define __NR_sys_ppoll __NR_ppoll 384 _syscall5(int, sys_ppoll, struct pollfd *, fds, nfds_t, nfds, 385 struct timespec *, timeout, const sigset_t *, sigmask, 386 size_t, sigsetsize) 387 #endif 388 389 #if defined(TARGET_NR_pselect6) 390 #ifndef __NR_pselect6 391 # define __NR_pselect6 -1 392 #endif 393 #define __NR_sys_pselect6 __NR_pselect6 394 _syscall6(int, sys_pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, 395 fd_set *, exceptfds, struct timespec *, timeout, void *, sig); 396 #endif 397 398 #if defined(TARGET_NR_prlimit64) 399 #ifndef __NR_prlimit64 400 # define __NR_prlimit64 -1 401 #endif 402 #define __NR_sys_prlimit64 __NR_prlimit64 403 /* The glibc rlimit structure may not be that used by the underlying syscall */ 404 struct host_rlimit64 { 405 uint64_t rlim_cur; 406 uint64_t rlim_max; 407 }; 408 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 409 const struct host_rlimit64 *, new_limit, 410 struct host_rlimit64 *, old_limit) 411 #endif 412 413 414 #if defined(TARGET_NR_timer_create) 415 /* Maxiumum of 32 active POSIX timers allowed at any one time. */ 416 static timer_t g_posix_timers[32] = { 0, } ; 417 418 static inline int next_free_host_timer(void) 419 { 420 int k ; 421 /* FIXME: Does finding the next free slot require a lock? */ 422 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { 423 if (g_posix_timers[k] == 0) { 424 g_posix_timers[k] = (timer_t) 1; 425 return k; 426 } 427 } 428 return -1; 429 } 430 #endif 431 432 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ 433 #ifdef TARGET_ARM 434 static inline int regpairs_aligned(void *cpu_env) { 435 return ((((CPUARMState *)cpu_env)->eabi) == 1) ; 436 } 437 #elif defined(TARGET_MIPS) 438 static inline int regpairs_aligned(void *cpu_env) { return 1; } 439 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) 440 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs 441 * of registers which translates to the same as ARM/MIPS, because we start with 442 * r3 as arg1 */ 443 static inline int regpairs_aligned(void *cpu_env) { return 1; } 444 #else 445 static inline int regpairs_aligned(void *cpu_env) { return 0; } 446 #endif 447 448 #define ERRNO_TABLE_SIZE 1200 449 450 /* target_to_host_errno_table[] is initialized from 451 * host_to_target_errno_table[] in syscall_init(). */ 452 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = { 453 }; 454 455 /* 456 * This list is the union of errno values overridden in asm-<arch>/errno.h 457 * minus the errnos that are not actually generic to all archs. 458 */ 459 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = { 460 [EIDRM] = TARGET_EIDRM, 461 [ECHRNG] = TARGET_ECHRNG, 462 [EL2NSYNC] = TARGET_EL2NSYNC, 463 [EL3HLT] = TARGET_EL3HLT, 464 [EL3RST] = TARGET_EL3RST, 465 [ELNRNG] = TARGET_ELNRNG, 466 [EUNATCH] = TARGET_EUNATCH, 467 [ENOCSI] = TARGET_ENOCSI, 468 [EL2HLT] = TARGET_EL2HLT, 469 [EDEADLK] = TARGET_EDEADLK, 470 [ENOLCK] = TARGET_ENOLCK, 471 [EBADE] = TARGET_EBADE, 472 [EBADR] = TARGET_EBADR, 473 [EXFULL] = TARGET_EXFULL, 474 [ENOANO] = TARGET_ENOANO, 475 [EBADRQC] = TARGET_EBADRQC, 476 [EBADSLT] = TARGET_EBADSLT, 477 [EBFONT] = TARGET_EBFONT, 478 [ENOSTR] = TARGET_ENOSTR, 479 [ENODATA] = TARGET_ENODATA, 480 [ETIME] = TARGET_ETIME, 481 [ENOSR] = TARGET_ENOSR, 482 [ENONET] = TARGET_ENONET, 483 [ENOPKG] = TARGET_ENOPKG, 484 [EREMOTE] = TARGET_EREMOTE, 485 [ENOLINK] = TARGET_ENOLINK, 486 [EADV] = TARGET_EADV, 487 [ESRMNT] = TARGET_ESRMNT, 488 [ECOMM] = TARGET_ECOMM, 489 [EPROTO] = TARGET_EPROTO, 490 [EDOTDOT] = TARGET_EDOTDOT, 491 [EMULTIHOP] = TARGET_EMULTIHOP, 492 [EBADMSG] = TARGET_EBADMSG, 493 [ENAMETOOLONG] = TARGET_ENAMETOOLONG, 494 [EOVERFLOW] = TARGET_EOVERFLOW, 495 [ENOTUNIQ] = TARGET_ENOTUNIQ, 496 [EBADFD] = TARGET_EBADFD, 497 [EREMCHG] = TARGET_EREMCHG, 498 [ELIBACC] = TARGET_ELIBACC, 499 [ELIBBAD] = TARGET_ELIBBAD, 500 [ELIBSCN] = TARGET_ELIBSCN, 501 [ELIBMAX] = TARGET_ELIBMAX, 502 [ELIBEXEC] = TARGET_ELIBEXEC, 503 [EILSEQ] = TARGET_EILSEQ, 504 [ENOSYS] = TARGET_ENOSYS, 505 [ELOOP] = TARGET_ELOOP, 506 [ERESTART] = TARGET_ERESTART, 507 [ESTRPIPE] = TARGET_ESTRPIPE, 508 [ENOTEMPTY] = TARGET_ENOTEMPTY, 509 [EUSERS] = TARGET_EUSERS, 510 [ENOTSOCK] = TARGET_ENOTSOCK, 511 [EDESTADDRREQ] = TARGET_EDESTADDRREQ, 512 [EMSGSIZE] = TARGET_EMSGSIZE, 513 [EPROTOTYPE] = TARGET_EPROTOTYPE, 514 [ENOPROTOOPT] = TARGET_ENOPROTOOPT, 515 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT, 516 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT, 517 [EOPNOTSUPP] = TARGET_EOPNOTSUPP, 518 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT, 519 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT, 520 [EADDRINUSE] = TARGET_EADDRINUSE, 521 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL, 522 [ENETDOWN] = TARGET_ENETDOWN, 523 [ENETUNREACH] = TARGET_ENETUNREACH, 524 [ENETRESET] = TARGET_ENETRESET, 525 [ECONNABORTED] = TARGET_ECONNABORTED, 526 [ECONNRESET] = TARGET_ECONNRESET, 527 [ENOBUFS] = TARGET_ENOBUFS, 528 [EISCONN] = TARGET_EISCONN, 529 [ENOTCONN] = TARGET_ENOTCONN, 530 [EUCLEAN] = TARGET_EUCLEAN, 531 [ENOTNAM] = TARGET_ENOTNAM, 532 [ENAVAIL] = TARGET_ENAVAIL, 533 [EISNAM] = TARGET_EISNAM, 534 [EREMOTEIO] = TARGET_EREMOTEIO, 535 [ESHUTDOWN] = TARGET_ESHUTDOWN, 536 [ETOOMANYREFS] = TARGET_ETOOMANYREFS, 537 [ETIMEDOUT] = TARGET_ETIMEDOUT, 538 [ECONNREFUSED] = TARGET_ECONNREFUSED, 539 [EHOSTDOWN] = TARGET_EHOSTDOWN, 540 [EHOSTUNREACH] = TARGET_EHOSTUNREACH, 541 [EALREADY] = TARGET_EALREADY, 542 [EINPROGRESS] = TARGET_EINPROGRESS, 543 [ESTALE] = TARGET_ESTALE, 544 [ECANCELED] = TARGET_ECANCELED, 545 [ENOMEDIUM] = TARGET_ENOMEDIUM, 546 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE, 547 #ifdef ENOKEY 548 [ENOKEY] = TARGET_ENOKEY, 549 #endif 550 #ifdef EKEYEXPIRED 551 [EKEYEXPIRED] = TARGET_EKEYEXPIRED, 552 #endif 553 #ifdef EKEYREVOKED 554 [EKEYREVOKED] = TARGET_EKEYREVOKED, 555 #endif 556 #ifdef EKEYREJECTED 557 [EKEYREJECTED] = TARGET_EKEYREJECTED, 558 #endif 559 #ifdef EOWNERDEAD 560 [EOWNERDEAD] = TARGET_EOWNERDEAD, 561 #endif 562 #ifdef ENOTRECOVERABLE 563 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE, 564 #endif 565 }; 566 567 static inline int host_to_target_errno(int err) 568 { 569 if(host_to_target_errno_table[err]) 570 return host_to_target_errno_table[err]; 571 return err; 572 } 573 574 static inline int target_to_host_errno(int err) 575 { 576 if (target_to_host_errno_table[err]) 577 return target_to_host_errno_table[err]; 578 return err; 579 } 580 581 static inline abi_long get_errno(abi_long ret) 582 { 583 if (ret == -1) 584 return -host_to_target_errno(errno); 585 else 586 return ret; 587 } 588 589 static inline int is_error(abi_long ret) 590 { 591 return (abi_ulong)ret >= (abi_ulong)(-4096); 592 } 593 594 char *target_strerror(int err) 595 { 596 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { 597 return NULL; 598 } 599 return strerror(target_to_host_errno(err)); 600 } 601 602 static inline int host_to_target_sock_type(int host_type) 603 { 604 int target_type; 605 606 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 607 case SOCK_DGRAM: 608 target_type = TARGET_SOCK_DGRAM; 609 break; 610 case SOCK_STREAM: 611 target_type = TARGET_SOCK_STREAM; 612 break; 613 default: 614 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 615 break; 616 } 617 618 #if defined(SOCK_CLOEXEC) 619 if (host_type & SOCK_CLOEXEC) { 620 target_type |= TARGET_SOCK_CLOEXEC; 621 } 622 #endif 623 624 #if defined(SOCK_NONBLOCK) 625 if (host_type & SOCK_NONBLOCK) { 626 target_type |= TARGET_SOCK_NONBLOCK; 627 } 628 #endif 629 630 return target_type; 631 } 632 633 static abi_ulong target_brk; 634 static abi_ulong target_original_brk; 635 static abi_ulong brk_page; 636 637 void target_set_brk(abi_ulong new_brk) 638 { 639 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 640 brk_page = HOST_PAGE_ALIGN(target_brk); 641 } 642 643 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 644 #define DEBUGF_BRK(message, args...) 645 646 /* do_brk() must return target values and target errnos. */ 647 abi_long do_brk(abi_ulong new_brk) 648 { 649 abi_long mapped_addr; 650 int new_alloc_size; 651 652 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 653 654 if (!new_brk) { 655 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 656 return target_brk; 657 } 658 if (new_brk < target_original_brk) { 659 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 660 target_brk); 661 return target_brk; 662 } 663 664 /* If the new brk is less than the highest page reserved to the 665 * target heap allocation, set it and we're almost done... */ 666 if (new_brk <= brk_page) { 667 /* Heap contents are initialized to zero, as for anonymous 668 * mapped pages. */ 669 if (new_brk > target_brk) { 670 memset(g2h(target_brk), 0, new_brk - target_brk); 671 } 672 target_brk = new_brk; 673 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 674 return target_brk; 675 } 676 677 /* We need to allocate more memory after the brk... Note that 678 * we don't use MAP_FIXED because that will map over the top of 679 * any existing mapping (like the one with the host libc or qemu 680 * itself); instead we treat "mapped but at wrong address" as 681 * a failure and unmap again. 682 */ 683 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 684 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 685 PROT_READ|PROT_WRITE, 686 MAP_ANON|MAP_PRIVATE, 0, 0)); 687 688 if (mapped_addr == brk_page) { 689 /* Heap contents are initialized to zero, as for anonymous 690 * mapped pages. Technically the new pages are already 691 * initialized to zero since they *are* anonymous mapped 692 * pages, however we have to take care with the contents that 693 * come from the remaining part of the previous page: it may 694 * contains garbage data due to a previous heap usage (grown 695 * then shrunken). */ 696 memset(g2h(target_brk), 0, brk_page - target_brk); 697 698 target_brk = new_brk; 699 brk_page = HOST_PAGE_ALIGN(target_brk); 700 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 701 target_brk); 702 return target_brk; 703 } else if (mapped_addr != -1) { 704 /* Mapped but at wrong address, meaning there wasn't actually 705 * enough space for this brk. 706 */ 707 target_munmap(mapped_addr, new_alloc_size); 708 mapped_addr = -1; 709 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 710 } 711 else { 712 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 713 } 714 715 #if defined(TARGET_ALPHA) 716 /* We (partially) emulate OSF/1 on Alpha, which requires we 717 return a proper errno, not an unchanged brk value. */ 718 return -TARGET_ENOMEM; 719 #endif 720 /* For everything else, return the previous break. */ 721 return target_brk; 722 } 723 724 static inline abi_long copy_from_user_fdset(fd_set *fds, 725 abi_ulong target_fds_addr, 726 int n) 727 { 728 int i, nw, j, k; 729 abi_ulong b, *target_fds; 730 731 nw = (n + TARGET_ABI_BITS - 1) / TARGET_ABI_BITS; 732 if (!(target_fds = lock_user(VERIFY_READ, 733 target_fds_addr, 734 sizeof(abi_ulong) * nw, 735 1))) 736 return -TARGET_EFAULT; 737 738 FD_ZERO(fds); 739 k = 0; 740 for (i = 0; i < nw; i++) { 741 /* grab the abi_ulong */ 742 __get_user(b, &target_fds[i]); 743 for (j = 0; j < TARGET_ABI_BITS; j++) { 744 /* check the bit inside the abi_ulong */ 745 if ((b >> j) & 1) 746 FD_SET(k, fds); 747 k++; 748 } 749 } 750 751 unlock_user(target_fds, target_fds_addr, 0); 752 753 return 0; 754 } 755 756 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 757 abi_ulong target_fds_addr, 758 int n) 759 { 760 if (target_fds_addr) { 761 if (copy_from_user_fdset(fds, target_fds_addr, n)) 762 return -TARGET_EFAULT; 763 *fds_ptr = fds; 764 } else { 765 *fds_ptr = NULL; 766 } 767 return 0; 768 } 769 770 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 771 const fd_set *fds, 772 int n) 773 { 774 int i, nw, j, k; 775 abi_long v; 776 abi_ulong *target_fds; 777 778 nw = (n + TARGET_ABI_BITS - 1) / TARGET_ABI_BITS; 779 if (!(target_fds = lock_user(VERIFY_WRITE, 780 target_fds_addr, 781 sizeof(abi_ulong) * nw, 782 0))) 783 return -TARGET_EFAULT; 784 785 k = 0; 786 for (i = 0; i < nw; i++) { 787 v = 0; 788 for (j = 0; j < TARGET_ABI_BITS; j++) { 789 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 790 k++; 791 } 792 __put_user(v, &target_fds[i]); 793 } 794 795 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 796 797 return 0; 798 } 799 800 #if defined(__alpha__) 801 #define HOST_HZ 1024 802 #else 803 #define HOST_HZ 100 804 #endif 805 806 static inline abi_long host_to_target_clock_t(long ticks) 807 { 808 #if HOST_HZ == TARGET_HZ 809 return ticks; 810 #else 811 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 812 #endif 813 } 814 815 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 816 const struct rusage *rusage) 817 { 818 struct target_rusage *target_rusage; 819 820 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 821 return -TARGET_EFAULT; 822 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 823 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 824 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 825 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 826 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 827 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 828 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 829 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 830 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 831 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 832 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 833 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 834 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 835 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 836 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 837 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 838 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 839 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 840 unlock_user_struct(target_rusage, target_addr, 1); 841 842 return 0; 843 } 844 845 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 846 { 847 abi_ulong target_rlim_swap; 848 rlim_t result; 849 850 target_rlim_swap = tswapal(target_rlim); 851 if (target_rlim_swap == TARGET_RLIM_INFINITY) 852 return RLIM_INFINITY; 853 854 result = target_rlim_swap; 855 if (target_rlim_swap != (rlim_t)result) 856 return RLIM_INFINITY; 857 858 return result; 859 } 860 861 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 862 { 863 abi_ulong target_rlim_swap; 864 abi_ulong result; 865 866 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 867 target_rlim_swap = TARGET_RLIM_INFINITY; 868 else 869 target_rlim_swap = rlim; 870 result = tswapal(target_rlim_swap); 871 872 return result; 873 } 874 875 static inline int target_to_host_resource(int code) 876 { 877 switch (code) { 878 case TARGET_RLIMIT_AS: 879 return RLIMIT_AS; 880 case TARGET_RLIMIT_CORE: 881 return RLIMIT_CORE; 882 case TARGET_RLIMIT_CPU: 883 return RLIMIT_CPU; 884 case TARGET_RLIMIT_DATA: 885 return RLIMIT_DATA; 886 case TARGET_RLIMIT_FSIZE: 887 return RLIMIT_FSIZE; 888 case TARGET_RLIMIT_LOCKS: 889 return RLIMIT_LOCKS; 890 case TARGET_RLIMIT_MEMLOCK: 891 return RLIMIT_MEMLOCK; 892 case TARGET_RLIMIT_MSGQUEUE: 893 return RLIMIT_MSGQUEUE; 894 case TARGET_RLIMIT_NICE: 895 return RLIMIT_NICE; 896 case TARGET_RLIMIT_NOFILE: 897 return RLIMIT_NOFILE; 898 case TARGET_RLIMIT_NPROC: 899 return RLIMIT_NPROC; 900 case TARGET_RLIMIT_RSS: 901 return RLIMIT_RSS; 902 case TARGET_RLIMIT_RTPRIO: 903 return RLIMIT_RTPRIO; 904 case TARGET_RLIMIT_SIGPENDING: 905 return RLIMIT_SIGPENDING; 906 case TARGET_RLIMIT_STACK: 907 return RLIMIT_STACK; 908 default: 909 return code; 910 } 911 } 912 913 static inline abi_long copy_from_user_timeval(struct timeval *tv, 914 abi_ulong target_tv_addr) 915 { 916 struct target_timeval *target_tv; 917 918 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) 919 return -TARGET_EFAULT; 920 921 __get_user(tv->tv_sec, &target_tv->tv_sec); 922 __get_user(tv->tv_usec, &target_tv->tv_usec); 923 924 unlock_user_struct(target_tv, target_tv_addr, 0); 925 926 return 0; 927 } 928 929 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 930 const struct timeval *tv) 931 { 932 struct target_timeval *target_tv; 933 934 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) 935 return -TARGET_EFAULT; 936 937 __put_user(tv->tv_sec, &target_tv->tv_sec); 938 __put_user(tv->tv_usec, &target_tv->tv_usec); 939 940 unlock_user_struct(target_tv, target_tv_addr, 1); 941 942 return 0; 943 } 944 945 static inline abi_long copy_from_user_timezone(struct timezone *tz, 946 abi_ulong target_tz_addr) 947 { 948 struct target_timezone *target_tz; 949 950 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 951 return -TARGET_EFAULT; 952 } 953 954 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 955 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 956 957 unlock_user_struct(target_tz, target_tz_addr, 0); 958 959 return 0; 960 } 961 962 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 963 #include <mqueue.h> 964 965 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 966 abi_ulong target_mq_attr_addr) 967 { 968 struct target_mq_attr *target_mq_attr; 969 970 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 971 target_mq_attr_addr, 1)) 972 return -TARGET_EFAULT; 973 974 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 975 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 976 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 977 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 978 979 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 980 981 return 0; 982 } 983 984 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 985 const struct mq_attr *attr) 986 { 987 struct target_mq_attr *target_mq_attr; 988 989 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 990 target_mq_attr_addr, 0)) 991 return -TARGET_EFAULT; 992 993 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 994 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 995 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 996 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 997 998 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 999 1000 return 0; 1001 } 1002 #endif 1003 1004 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1005 /* do_select() must return target values and target errnos. */ 1006 static abi_long do_select(int n, 1007 abi_ulong rfd_addr, abi_ulong wfd_addr, 1008 abi_ulong efd_addr, abi_ulong target_tv_addr) 1009 { 1010 fd_set rfds, wfds, efds; 1011 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1012 struct timeval tv, *tv_ptr; 1013 abi_long ret; 1014 1015 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1016 if (ret) { 1017 return ret; 1018 } 1019 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1020 if (ret) { 1021 return ret; 1022 } 1023 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1024 if (ret) { 1025 return ret; 1026 } 1027 1028 if (target_tv_addr) { 1029 if (copy_from_user_timeval(&tv, target_tv_addr)) 1030 return -TARGET_EFAULT; 1031 tv_ptr = &tv; 1032 } else { 1033 tv_ptr = NULL; 1034 } 1035 1036 ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr)); 1037 1038 if (!is_error(ret)) { 1039 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1040 return -TARGET_EFAULT; 1041 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1042 return -TARGET_EFAULT; 1043 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1044 return -TARGET_EFAULT; 1045 1046 if (target_tv_addr && copy_to_user_timeval(target_tv_addr, &tv)) 1047 return -TARGET_EFAULT; 1048 } 1049 1050 return ret; 1051 } 1052 #endif 1053 1054 static abi_long do_pipe2(int host_pipe[], int flags) 1055 { 1056 #ifdef CONFIG_PIPE2 1057 return pipe2(host_pipe, flags); 1058 #else 1059 return -ENOSYS; 1060 #endif 1061 } 1062 1063 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, 1064 int flags, int is_pipe2) 1065 { 1066 int host_pipe[2]; 1067 abi_long ret; 1068 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe); 1069 1070 if (is_error(ret)) 1071 return get_errno(ret); 1072 1073 /* Several targets have special calling conventions for the original 1074 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1075 if (!is_pipe2) { 1076 #if defined(TARGET_ALPHA) 1077 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; 1078 return host_pipe[0]; 1079 #elif defined(TARGET_MIPS) 1080 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; 1081 return host_pipe[0]; 1082 #elif defined(TARGET_SH4) 1083 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; 1084 return host_pipe[0]; 1085 #elif defined(TARGET_SPARC) 1086 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1]; 1087 return host_pipe[0]; 1088 #endif 1089 } 1090 1091 if (put_user_s32(host_pipe[0], pipedes) 1092 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) 1093 return -TARGET_EFAULT; 1094 return get_errno(ret); 1095 } 1096 1097 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1098 abi_ulong target_addr, 1099 socklen_t len) 1100 { 1101 struct target_ip_mreqn *target_smreqn; 1102 1103 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1104 if (!target_smreqn) 1105 return -TARGET_EFAULT; 1106 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1107 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1108 if (len == sizeof(struct target_ip_mreqn)) 1109 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1110 unlock_user(target_smreqn, target_addr, 0); 1111 1112 return 0; 1113 } 1114 1115 static inline abi_long target_to_host_sockaddr(struct sockaddr *addr, 1116 abi_ulong target_addr, 1117 socklen_t len) 1118 { 1119 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1120 sa_family_t sa_family; 1121 struct target_sockaddr *target_saddr; 1122 1123 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1124 if (!target_saddr) 1125 return -TARGET_EFAULT; 1126 1127 sa_family = tswap16(target_saddr->sa_family); 1128 1129 /* Oops. The caller might send a incomplete sun_path; sun_path 1130 * must be terminated by \0 (see the manual page), but 1131 * unfortunately it is quite common to specify sockaddr_un 1132 * length as "strlen(x->sun_path)" while it should be 1133 * "strlen(...) + 1". We'll fix that here if needed. 1134 * Linux kernel has a similar feature. 1135 */ 1136 1137 if (sa_family == AF_UNIX) { 1138 if (len < unix_maxlen && len > 0) { 1139 char *cp = (char*)target_saddr; 1140 1141 if ( cp[len-1] && !cp[len] ) 1142 len++; 1143 } 1144 if (len > unix_maxlen) 1145 len = unix_maxlen; 1146 } 1147 1148 memcpy(addr, target_saddr, len); 1149 addr->sa_family = sa_family; 1150 if (sa_family == AF_PACKET) { 1151 struct target_sockaddr_ll *lladdr; 1152 1153 lladdr = (struct target_sockaddr_ll *)addr; 1154 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1155 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1156 } 1157 unlock_user(target_saddr, target_addr, 0); 1158 1159 return 0; 1160 } 1161 1162 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1163 struct sockaddr *addr, 1164 socklen_t len) 1165 { 1166 struct target_sockaddr *target_saddr; 1167 1168 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1169 if (!target_saddr) 1170 return -TARGET_EFAULT; 1171 memcpy(target_saddr, addr, len); 1172 target_saddr->sa_family = tswap16(addr->sa_family); 1173 unlock_user(target_saddr, target_addr, len); 1174 1175 return 0; 1176 } 1177 1178 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1179 struct target_msghdr *target_msgh) 1180 { 1181 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1182 abi_long msg_controllen; 1183 abi_ulong target_cmsg_addr; 1184 struct target_cmsghdr *target_cmsg; 1185 socklen_t space = 0; 1186 1187 msg_controllen = tswapal(target_msgh->msg_controllen); 1188 if (msg_controllen < sizeof (struct target_cmsghdr)) 1189 goto the_end; 1190 target_cmsg_addr = tswapal(target_msgh->msg_control); 1191 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1192 if (!target_cmsg) 1193 return -TARGET_EFAULT; 1194 1195 while (cmsg && target_cmsg) { 1196 void *data = CMSG_DATA(cmsg); 1197 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1198 1199 int len = tswapal(target_cmsg->cmsg_len) 1200 - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr)); 1201 1202 space += CMSG_SPACE(len); 1203 if (space > msgh->msg_controllen) { 1204 space -= CMSG_SPACE(len); 1205 /* This is a QEMU bug, since we allocated the payload 1206 * area ourselves (unlike overflow in host-to-target 1207 * conversion, which is just the guest giving us a buffer 1208 * that's too small). It can't happen for the payload types 1209 * we currently support; if it becomes an issue in future 1210 * we would need to improve our allocation strategy to 1211 * something more intelligent than "twice the size of the 1212 * target buffer we're reading from". 1213 */ 1214 gemu_log("Host cmsg overflow\n"); 1215 break; 1216 } 1217 1218 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1219 cmsg->cmsg_level = SOL_SOCKET; 1220 } else { 1221 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1222 } 1223 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1224 cmsg->cmsg_len = CMSG_LEN(len); 1225 1226 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1227 int *fd = (int *)data; 1228 int *target_fd = (int *)target_data; 1229 int i, numfds = len / sizeof(int); 1230 1231 for (i = 0; i < numfds; i++) { 1232 __get_user(fd[i], target_fd + i); 1233 } 1234 } else if (cmsg->cmsg_level == SOL_SOCKET 1235 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1236 struct ucred *cred = (struct ucred *)data; 1237 struct target_ucred *target_cred = 1238 (struct target_ucred *)target_data; 1239 1240 __get_user(cred->pid, &target_cred->pid); 1241 __get_user(cred->uid, &target_cred->uid); 1242 __get_user(cred->gid, &target_cred->gid); 1243 } else { 1244 gemu_log("Unsupported ancillary data: %d/%d\n", 1245 cmsg->cmsg_level, cmsg->cmsg_type); 1246 memcpy(data, target_data, len); 1247 } 1248 1249 cmsg = CMSG_NXTHDR(msgh, cmsg); 1250 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg); 1251 } 1252 unlock_user(target_cmsg, target_cmsg_addr, 0); 1253 the_end: 1254 msgh->msg_controllen = space; 1255 return 0; 1256 } 1257 1258 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1259 struct msghdr *msgh) 1260 { 1261 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1262 abi_long msg_controllen; 1263 abi_ulong target_cmsg_addr; 1264 struct target_cmsghdr *target_cmsg; 1265 socklen_t space = 0; 1266 1267 msg_controllen = tswapal(target_msgh->msg_controllen); 1268 if (msg_controllen < sizeof (struct target_cmsghdr)) 1269 goto the_end; 1270 target_cmsg_addr = tswapal(target_msgh->msg_control); 1271 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1272 if (!target_cmsg) 1273 return -TARGET_EFAULT; 1274 1275 while (cmsg && target_cmsg) { 1276 void *data = CMSG_DATA(cmsg); 1277 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1278 1279 int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr)); 1280 int tgt_len, tgt_space; 1281 1282 /* We never copy a half-header but may copy half-data; 1283 * this is Linux's behaviour in put_cmsg(). Note that 1284 * truncation here is a guest problem (which we report 1285 * to the guest via the CTRUNC bit), unlike truncation 1286 * in target_to_host_cmsg, which is a QEMU bug. 1287 */ 1288 if (msg_controllen < sizeof(struct cmsghdr)) { 1289 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1290 break; 1291 } 1292 1293 if (cmsg->cmsg_level == SOL_SOCKET) { 1294 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1295 } else { 1296 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1297 } 1298 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1299 1300 tgt_len = TARGET_CMSG_LEN(len); 1301 1302 /* Payload types which need a different size of payload on 1303 * the target must adjust tgt_len here. 1304 */ 1305 switch (cmsg->cmsg_level) { 1306 case SOL_SOCKET: 1307 switch (cmsg->cmsg_type) { 1308 case SO_TIMESTAMP: 1309 tgt_len = sizeof(struct target_timeval); 1310 break; 1311 default: 1312 break; 1313 } 1314 default: 1315 break; 1316 } 1317 1318 if (msg_controllen < tgt_len) { 1319 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1320 tgt_len = msg_controllen; 1321 } 1322 1323 /* We must now copy-and-convert len bytes of payload 1324 * into tgt_len bytes of destination space. Bear in mind 1325 * that in both source and destination we may be dealing 1326 * with a truncated value! 1327 */ 1328 switch (cmsg->cmsg_level) { 1329 case SOL_SOCKET: 1330 switch (cmsg->cmsg_type) { 1331 case SCM_RIGHTS: 1332 { 1333 int *fd = (int *)data; 1334 int *target_fd = (int *)target_data; 1335 int i, numfds = tgt_len / sizeof(int); 1336 1337 for (i = 0; i < numfds; i++) { 1338 __put_user(fd[i], target_fd + i); 1339 } 1340 break; 1341 } 1342 case SO_TIMESTAMP: 1343 { 1344 struct timeval *tv = (struct timeval *)data; 1345 struct target_timeval *target_tv = 1346 (struct target_timeval *)target_data; 1347 1348 if (len != sizeof(struct timeval) || 1349 tgt_len != sizeof(struct target_timeval)) { 1350 goto unimplemented; 1351 } 1352 1353 /* copy struct timeval to target */ 1354 __put_user(tv->tv_sec, &target_tv->tv_sec); 1355 __put_user(tv->tv_usec, &target_tv->tv_usec); 1356 break; 1357 } 1358 case SCM_CREDENTIALS: 1359 { 1360 struct ucred *cred = (struct ucred *)data; 1361 struct target_ucred *target_cred = 1362 (struct target_ucred *)target_data; 1363 1364 __put_user(cred->pid, &target_cred->pid); 1365 __put_user(cred->uid, &target_cred->uid); 1366 __put_user(cred->gid, &target_cred->gid); 1367 break; 1368 } 1369 default: 1370 goto unimplemented; 1371 } 1372 break; 1373 1374 default: 1375 unimplemented: 1376 gemu_log("Unsupported ancillary data: %d/%d\n", 1377 cmsg->cmsg_level, cmsg->cmsg_type); 1378 memcpy(target_data, data, MIN(len, tgt_len)); 1379 if (tgt_len > len) { 1380 memset(target_data + len, 0, tgt_len - len); 1381 } 1382 } 1383 1384 target_cmsg->cmsg_len = tswapal(tgt_len); 1385 tgt_space = TARGET_CMSG_SPACE(tgt_len); 1386 if (msg_controllen < tgt_space) { 1387 tgt_space = msg_controllen; 1388 } 1389 msg_controllen -= tgt_space; 1390 space += tgt_space; 1391 cmsg = CMSG_NXTHDR(msgh, cmsg); 1392 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg); 1393 } 1394 unlock_user(target_cmsg, target_cmsg_addr, space); 1395 the_end: 1396 target_msgh->msg_controllen = tswapal(space); 1397 return 0; 1398 } 1399 1400 /* do_setsockopt() Must return target values and target errnos. */ 1401 static abi_long do_setsockopt(int sockfd, int level, int optname, 1402 abi_ulong optval_addr, socklen_t optlen) 1403 { 1404 abi_long ret; 1405 int val; 1406 struct ip_mreqn *ip_mreq; 1407 struct ip_mreq_source *ip_mreq_source; 1408 1409 switch(level) { 1410 case SOL_TCP: 1411 /* TCP options all take an 'int' value. */ 1412 if (optlen < sizeof(uint32_t)) 1413 return -TARGET_EINVAL; 1414 1415 if (get_user_u32(val, optval_addr)) 1416 return -TARGET_EFAULT; 1417 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 1418 break; 1419 case SOL_IP: 1420 switch(optname) { 1421 case IP_TOS: 1422 case IP_TTL: 1423 case IP_HDRINCL: 1424 case IP_ROUTER_ALERT: 1425 case IP_RECVOPTS: 1426 case IP_RETOPTS: 1427 case IP_PKTINFO: 1428 case IP_MTU_DISCOVER: 1429 case IP_RECVERR: 1430 case IP_RECVTOS: 1431 #ifdef IP_FREEBIND 1432 case IP_FREEBIND: 1433 #endif 1434 case IP_MULTICAST_TTL: 1435 case IP_MULTICAST_LOOP: 1436 val = 0; 1437 if (optlen >= sizeof(uint32_t)) { 1438 if (get_user_u32(val, optval_addr)) 1439 return -TARGET_EFAULT; 1440 } else if (optlen >= 1) { 1441 if (get_user_u8(val, optval_addr)) 1442 return -TARGET_EFAULT; 1443 } 1444 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 1445 break; 1446 case IP_ADD_MEMBERSHIP: 1447 case IP_DROP_MEMBERSHIP: 1448 if (optlen < sizeof (struct target_ip_mreq) || 1449 optlen > sizeof (struct target_ip_mreqn)) 1450 return -TARGET_EINVAL; 1451 1452 ip_mreq = (struct ip_mreqn *) alloca(optlen); 1453 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 1454 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 1455 break; 1456 1457 case IP_BLOCK_SOURCE: 1458 case IP_UNBLOCK_SOURCE: 1459 case IP_ADD_SOURCE_MEMBERSHIP: 1460 case IP_DROP_SOURCE_MEMBERSHIP: 1461 if (optlen != sizeof (struct target_ip_mreq_source)) 1462 return -TARGET_EINVAL; 1463 1464 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 1465 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 1466 unlock_user (ip_mreq_source, optval_addr, 0); 1467 break; 1468 1469 default: 1470 goto unimplemented; 1471 } 1472 break; 1473 case SOL_IPV6: 1474 switch (optname) { 1475 case IPV6_MTU_DISCOVER: 1476 case IPV6_MTU: 1477 case IPV6_V6ONLY: 1478 case IPV6_RECVPKTINFO: 1479 val = 0; 1480 if (optlen < sizeof(uint32_t)) { 1481 return -TARGET_EINVAL; 1482 } 1483 if (get_user_u32(val, optval_addr)) { 1484 return -TARGET_EFAULT; 1485 } 1486 ret = get_errno(setsockopt(sockfd, level, optname, 1487 &val, sizeof(val))); 1488 break; 1489 default: 1490 goto unimplemented; 1491 } 1492 break; 1493 case SOL_RAW: 1494 switch (optname) { 1495 case ICMP_FILTER: 1496 /* struct icmp_filter takes an u32 value */ 1497 if (optlen < sizeof(uint32_t)) { 1498 return -TARGET_EINVAL; 1499 } 1500 1501 if (get_user_u32(val, optval_addr)) { 1502 return -TARGET_EFAULT; 1503 } 1504 ret = get_errno(setsockopt(sockfd, level, optname, 1505 &val, sizeof(val))); 1506 break; 1507 1508 default: 1509 goto unimplemented; 1510 } 1511 break; 1512 case TARGET_SOL_SOCKET: 1513 switch (optname) { 1514 case TARGET_SO_RCVTIMEO: 1515 { 1516 struct timeval tv; 1517 1518 optname = SO_RCVTIMEO; 1519 1520 set_timeout: 1521 if (optlen != sizeof(struct target_timeval)) { 1522 return -TARGET_EINVAL; 1523 } 1524 1525 if (copy_from_user_timeval(&tv, optval_addr)) { 1526 return -TARGET_EFAULT; 1527 } 1528 1529 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 1530 &tv, sizeof(tv))); 1531 return ret; 1532 } 1533 case TARGET_SO_SNDTIMEO: 1534 optname = SO_SNDTIMEO; 1535 goto set_timeout; 1536 case TARGET_SO_ATTACH_FILTER: 1537 { 1538 struct target_sock_fprog *tfprog; 1539 struct target_sock_filter *tfilter; 1540 struct sock_fprog fprog; 1541 struct sock_filter *filter; 1542 int i; 1543 1544 if (optlen != sizeof(*tfprog)) { 1545 return -TARGET_EINVAL; 1546 } 1547 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 1548 return -TARGET_EFAULT; 1549 } 1550 if (!lock_user_struct(VERIFY_READ, tfilter, 1551 tswapal(tfprog->filter), 0)) { 1552 unlock_user_struct(tfprog, optval_addr, 1); 1553 return -TARGET_EFAULT; 1554 } 1555 1556 fprog.len = tswap16(tfprog->len); 1557 filter = malloc(fprog.len * sizeof(*filter)); 1558 if (filter == NULL) { 1559 unlock_user_struct(tfilter, tfprog->filter, 1); 1560 unlock_user_struct(tfprog, optval_addr, 1); 1561 return -TARGET_ENOMEM; 1562 } 1563 for (i = 0; i < fprog.len; i++) { 1564 filter[i].code = tswap16(tfilter[i].code); 1565 filter[i].jt = tfilter[i].jt; 1566 filter[i].jf = tfilter[i].jf; 1567 filter[i].k = tswap32(tfilter[i].k); 1568 } 1569 fprog.filter = filter; 1570 1571 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 1572 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 1573 free(filter); 1574 1575 unlock_user_struct(tfilter, tfprog->filter, 1); 1576 unlock_user_struct(tfprog, optval_addr, 1); 1577 return ret; 1578 } 1579 case TARGET_SO_BINDTODEVICE: 1580 { 1581 char *dev_ifname, *addr_ifname; 1582 1583 if (optlen > IFNAMSIZ - 1) { 1584 optlen = IFNAMSIZ - 1; 1585 } 1586 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 1587 if (!dev_ifname) { 1588 return -TARGET_EFAULT; 1589 } 1590 optname = SO_BINDTODEVICE; 1591 addr_ifname = alloca(IFNAMSIZ); 1592 memcpy(addr_ifname, dev_ifname, optlen); 1593 addr_ifname[optlen] = 0; 1594 ret = get_errno(setsockopt(sockfd, level, optname, addr_ifname, optlen)); 1595 unlock_user (dev_ifname, optval_addr, 0); 1596 return ret; 1597 } 1598 /* Options with 'int' argument. */ 1599 case TARGET_SO_DEBUG: 1600 optname = SO_DEBUG; 1601 break; 1602 case TARGET_SO_REUSEADDR: 1603 optname = SO_REUSEADDR; 1604 break; 1605 case TARGET_SO_TYPE: 1606 optname = SO_TYPE; 1607 break; 1608 case TARGET_SO_ERROR: 1609 optname = SO_ERROR; 1610 break; 1611 case TARGET_SO_DONTROUTE: 1612 optname = SO_DONTROUTE; 1613 break; 1614 case TARGET_SO_BROADCAST: 1615 optname = SO_BROADCAST; 1616 break; 1617 case TARGET_SO_SNDBUF: 1618 optname = SO_SNDBUF; 1619 break; 1620 case TARGET_SO_SNDBUFFORCE: 1621 optname = SO_SNDBUFFORCE; 1622 break; 1623 case TARGET_SO_RCVBUF: 1624 optname = SO_RCVBUF; 1625 break; 1626 case TARGET_SO_RCVBUFFORCE: 1627 optname = SO_RCVBUFFORCE; 1628 break; 1629 case TARGET_SO_KEEPALIVE: 1630 optname = SO_KEEPALIVE; 1631 break; 1632 case TARGET_SO_OOBINLINE: 1633 optname = SO_OOBINLINE; 1634 break; 1635 case TARGET_SO_NO_CHECK: 1636 optname = SO_NO_CHECK; 1637 break; 1638 case TARGET_SO_PRIORITY: 1639 optname = SO_PRIORITY; 1640 break; 1641 #ifdef SO_BSDCOMPAT 1642 case TARGET_SO_BSDCOMPAT: 1643 optname = SO_BSDCOMPAT; 1644 break; 1645 #endif 1646 case TARGET_SO_PASSCRED: 1647 optname = SO_PASSCRED; 1648 break; 1649 case TARGET_SO_PASSSEC: 1650 optname = SO_PASSSEC; 1651 break; 1652 case TARGET_SO_TIMESTAMP: 1653 optname = SO_TIMESTAMP; 1654 break; 1655 case TARGET_SO_RCVLOWAT: 1656 optname = SO_RCVLOWAT; 1657 break; 1658 break; 1659 default: 1660 goto unimplemented; 1661 } 1662 if (optlen < sizeof(uint32_t)) 1663 return -TARGET_EINVAL; 1664 1665 if (get_user_u32(val, optval_addr)) 1666 return -TARGET_EFAULT; 1667 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 1668 break; 1669 default: 1670 unimplemented: 1671 gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname); 1672 ret = -TARGET_ENOPROTOOPT; 1673 } 1674 return ret; 1675 } 1676 1677 /* do_getsockopt() Must return target values and target errnos. */ 1678 static abi_long do_getsockopt(int sockfd, int level, int optname, 1679 abi_ulong optval_addr, abi_ulong optlen) 1680 { 1681 abi_long ret; 1682 int len, val; 1683 socklen_t lv; 1684 1685 switch(level) { 1686 case TARGET_SOL_SOCKET: 1687 level = SOL_SOCKET; 1688 switch (optname) { 1689 /* These don't just return a single integer */ 1690 case TARGET_SO_LINGER: 1691 case TARGET_SO_RCVTIMEO: 1692 case TARGET_SO_SNDTIMEO: 1693 case TARGET_SO_PEERNAME: 1694 goto unimplemented; 1695 case TARGET_SO_PEERCRED: { 1696 struct ucred cr; 1697 socklen_t crlen; 1698 struct target_ucred *tcr; 1699 1700 if (get_user_u32(len, optlen)) { 1701 return -TARGET_EFAULT; 1702 } 1703 if (len < 0) { 1704 return -TARGET_EINVAL; 1705 } 1706 1707 crlen = sizeof(cr); 1708 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 1709 &cr, &crlen)); 1710 if (ret < 0) { 1711 return ret; 1712 } 1713 if (len > crlen) { 1714 len = crlen; 1715 } 1716 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 1717 return -TARGET_EFAULT; 1718 } 1719 __put_user(cr.pid, &tcr->pid); 1720 __put_user(cr.uid, &tcr->uid); 1721 __put_user(cr.gid, &tcr->gid); 1722 unlock_user_struct(tcr, optval_addr, 1); 1723 if (put_user_u32(len, optlen)) { 1724 return -TARGET_EFAULT; 1725 } 1726 break; 1727 } 1728 /* Options with 'int' argument. */ 1729 case TARGET_SO_DEBUG: 1730 optname = SO_DEBUG; 1731 goto int_case; 1732 case TARGET_SO_REUSEADDR: 1733 optname = SO_REUSEADDR; 1734 goto int_case; 1735 case TARGET_SO_TYPE: 1736 optname = SO_TYPE; 1737 goto int_case; 1738 case TARGET_SO_ERROR: 1739 optname = SO_ERROR; 1740 goto int_case; 1741 case TARGET_SO_DONTROUTE: 1742 optname = SO_DONTROUTE; 1743 goto int_case; 1744 case TARGET_SO_BROADCAST: 1745 optname = SO_BROADCAST; 1746 goto int_case; 1747 case TARGET_SO_SNDBUF: 1748 optname = SO_SNDBUF; 1749 goto int_case; 1750 case TARGET_SO_RCVBUF: 1751 optname = SO_RCVBUF; 1752 goto int_case; 1753 case TARGET_SO_KEEPALIVE: 1754 optname = SO_KEEPALIVE; 1755 goto int_case; 1756 case TARGET_SO_OOBINLINE: 1757 optname = SO_OOBINLINE; 1758 goto int_case; 1759 case TARGET_SO_NO_CHECK: 1760 optname = SO_NO_CHECK; 1761 goto int_case; 1762 case TARGET_SO_PRIORITY: 1763 optname = SO_PRIORITY; 1764 goto int_case; 1765 #ifdef SO_BSDCOMPAT 1766 case TARGET_SO_BSDCOMPAT: 1767 optname = SO_BSDCOMPAT; 1768 goto int_case; 1769 #endif 1770 case TARGET_SO_PASSCRED: 1771 optname = SO_PASSCRED; 1772 goto int_case; 1773 case TARGET_SO_TIMESTAMP: 1774 optname = SO_TIMESTAMP; 1775 goto int_case; 1776 case TARGET_SO_RCVLOWAT: 1777 optname = SO_RCVLOWAT; 1778 goto int_case; 1779 case TARGET_SO_ACCEPTCONN: 1780 optname = SO_ACCEPTCONN; 1781 goto int_case; 1782 default: 1783 goto int_case; 1784 } 1785 break; 1786 case SOL_TCP: 1787 /* TCP options all take an 'int' value. */ 1788 int_case: 1789 if (get_user_u32(len, optlen)) 1790 return -TARGET_EFAULT; 1791 if (len < 0) 1792 return -TARGET_EINVAL; 1793 lv = sizeof(lv); 1794 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 1795 if (ret < 0) 1796 return ret; 1797 if (optname == SO_TYPE) { 1798 val = host_to_target_sock_type(val); 1799 } 1800 if (len > lv) 1801 len = lv; 1802 if (len == 4) { 1803 if (put_user_u32(val, optval_addr)) 1804 return -TARGET_EFAULT; 1805 } else { 1806 if (put_user_u8(val, optval_addr)) 1807 return -TARGET_EFAULT; 1808 } 1809 if (put_user_u32(len, optlen)) 1810 return -TARGET_EFAULT; 1811 break; 1812 case SOL_IP: 1813 switch(optname) { 1814 case IP_TOS: 1815 case IP_TTL: 1816 case IP_HDRINCL: 1817 case IP_ROUTER_ALERT: 1818 case IP_RECVOPTS: 1819 case IP_RETOPTS: 1820 case IP_PKTINFO: 1821 case IP_MTU_DISCOVER: 1822 case IP_RECVERR: 1823 case IP_RECVTOS: 1824 #ifdef IP_FREEBIND 1825 case IP_FREEBIND: 1826 #endif 1827 case IP_MULTICAST_TTL: 1828 case IP_MULTICAST_LOOP: 1829 if (get_user_u32(len, optlen)) 1830 return -TARGET_EFAULT; 1831 if (len < 0) 1832 return -TARGET_EINVAL; 1833 lv = sizeof(lv); 1834 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 1835 if (ret < 0) 1836 return ret; 1837 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 1838 len = 1; 1839 if (put_user_u32(len, optlen) 1840 || put_user_u8(val, optval_addr)) 1841 return -TARGET_EFAULT; 1842 } else { 1843 if (len > sizeof(int)) 1844 len = sizeof(int); 1845 if (put_user_u32(len, optlen) 1846 || put_user_u32(val, optval_addr)) 1847 return -TARGET_EFAULT; 1848 } 1849 break; 1850 default: 1851 ret = -TARGET_ENOPROTOOPT; 1852 break; 1853 } 1854 break; 1855 default: 1856 unimplemented: 1857 gemu_log("getsockopt level=%d optname=%d not yet supported\n", 1858 level, optname); 1859 ret = -TARGET_EOPNOTSUPP; 1860 break; 1861 } 1862 return ret; 1863 } 1864 1865 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 1866 int count, int copy) 1867 { 1868 struct target_iovec *target_vec; 1869 struct iovec *vec; 1870 abi_ulong total_len, max_len; 1871 int i; 1872 int err = 0; 1873 bool bad_address = false; 1874 1875 if (count == 0) { 1876 errno = 0; 1877 return NULL; 1878 } 1879 if (count < 0 || count > IOV_MAX) { 1880 errno = EINVAL; 1881 return NULL; 1882 } 1883 1884 vec = calloc(count, sizeof(struct iovec)); 1885 if (vec == NULL) { 1886 errno = ENOMEM; 1887 return NULL; 1888 } 1889 1890 target_vec = lock_user(VERIFY_READ, target_addr, 1891 count * sizeof(struct target_iovec), 1); 1892 if (target_vec == NULL) { 1893 err = EFAULT; 1894 goto fail2; 1895 } 1896 1897 /* ??? If host page size > target page size, this will result in a 1898 value larger than what we can actually support. */ 1899 max_len = 0x7fffffff & TARGET_PAGE_MASK; 1900 total_len = 0; 1901 1902 for (i = 0; i < count; i++) { 1903 abi_ulong base = tswapal(target_vec[i].iov_base); 1904 abi_long len = tswapal(target_vec[i].iov_len); 1905 1906 if (len < 0) { 1907 err = EINVAL; 1908 goto fail; 1909 } else if (len == 0) { 1910 /* Zero length pointer is ignored. */ 1911 vec[i].iov_base = 0; 1912 } else { 1913 vec[i].iov_base = lock_user(type, base, len, copy); 1914 /* If the first buffer pointer is bad, this is a fault. But 1915 * subsequent bad buffers will result in a partial write; this 1916 * is realized by filling the vector with null pointers and 1917 * zero lengths. */ 1918 if (!vec[i].iov_base) { 1919 if (i == 0) { 1920 err = EFAULT; 1921 goto fail; 1922 } else { 1923 bad_address = true; 1924 } 1925 } 1926 if (bad_address) { 1927 len = 0; 1928 } 1929 if (len > max_len - total_len) { 1930 len = max_len - total_len; 1931 } 1932 } 1933 vec[i].iov_len = len; 1934 total_len += len; 1935 } 1936 1937 unlock_user(target_vec, target_addr, 0); 1938 return vec; 1939 1940 fail: 1941 while (--i >= 0) { 1942 if (tswapal(target_vec[i].iov_len) > 0) { 1943 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 1944 } 1945 } 1946 unlock_user(target_vec, target_addr, 0); 1947 fail2: 1948 free(vec); 1949 errno = err; 1950 return NULL; 1951 } 1952 1953 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 1954 int count, int copy) 1955 { 1956 struct target_iovec *target_vec; 1957 int i; 1958 1959 target_vec = lock_user(VERIFY_READ, target_addr, 1960 count * sizeof(struct target_iovec), 1); 1961 if (target_vec) { 1962 for (i = 0; i < count; i++) { 1963 abi_ulong base = tswapal(target_vec[i].iov_base); 1964 abi_long len = tswapal(target_vec[i].iov_len); 1965 if (len < 0) { 1966 break; 1967 } 1968 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 1969 } 1970 unlock_user(target_vec, target_addr, 0); 1971 } 1972 1973 free(vec); 1974 } 1975 1976 static inline int target_to_host_sock_type(int *type) 1977 { 1978 int host_type = 0; 1979 int target_type = *type; 1980 1981 switch (target_type & TARGET_SOCK_TYPE_MASK) { 1982 case TARGET_SOCK_DGRAM: 1983 host_type = SOCK_DGRAM; 1984 break; 1985 case TARGET_SOCK_STREAM: 1986 host_type = SOCK_STREAM; 1987 break; 1988 default: 1989 host_type = target_type & TARGET_SOCK_TYPE_MASK; 1990 break; 1991 } 1992 if (target_type & TARGET_SOCK_CLOEXEC) { 1993 #if defined(SOCK_CLOEXEC) 1994 host_type |= SOCK_CLOEXEC; 1995 #else 1996 return -TARGET_EINVAL; 1997 #endif 1998 } 1999 if (target_type & TARGET_SOCK_NONBLOCK) { 2000 #if defined(SOCK_NONBLOCK) 2001 host_type |= SOCK_NONBLOCK; 2002 #elif !defined(O_NONBLOCK) 2003 return -TARGET_EINVAL; 2004 #endif 2005 } 2006 *type = host_type; 2007 return 0; 2008 } 2009 2010 /* Try to emulate socket type flags after socket creation. */ 2011 static int sock_flags_fixup(int fd, int target_type) 2012 { 2013 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 2014 if (target_type & TARGET_SOCK_NONBLOCK) { 2015 int flags = fcntl(fd, F_GETFL); 2016 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 2017 close(fd); 2018 return -TARGET_EINVAL; 2019 } 2020 } 2021 #endif 2022 return fd; 2023 } 2024 2025 /* do_socket() Must return target values and target errnos. */ 2026 static abi_long do_socket(int domain, int type, int protocol) 2027 { 2028 int target_type = type; 2029 int ret; 2030 2031 ret = target_to_host_sock_type(&type); 2032 if (ret) { 2033 return ret; 2034 } 2035 2036 if (domain == PF_NETLINK) 2037 return -TARGET_EAFNOSUPPORT; 2038 ret = get_errno(socket(domain, type, protocol)); 2039 if (ret >= 0) { 2040 ret = sock_flags_fixup(ret, target_type); 2041 } 2042 return ret; 2043 } 2044 2045 /* do_bind() Must return target values and target errnos. */ 2046 static abi_long do_bind(int sockfd, abi_ulong target_addr, 2047 socklen_t addrlen) 2048 { 2049 void *addr; 2050 abi_long ret; 2051 2052 if ((int)addrlen < 0) { 2053 return -TARGET_EINVAL; 2054 } 2055 2056 addr = alloca(addrlen+1); 2057 2058 ret = target_to_host_sockaddr(addr, target_addr, addrlen); 2059 if (ret) 2060 return ret; 2061 2062 return get_errno(bind(sockfd, addr, addrlen)); 2063 } 2064 2065 /* do_connect() Must return target values and target errnos. */ 2066 static abi_long do_connect(int sockfd, abi_ulong target_addr, 2067 socklen_t addrlen) 2068 { 2069 void *addr; 2070 abi_long ret; 2071 2072 if ((int)addrlen < 0) { 2073 return -TARGET_EINVAL; 2074 } 2075 2076 addr = alloca(addrlen+1); 2077 2078 ret = target_to_host_sockaddr(addr, target_addr, addrlen); 2079 if (ret) 2080 return ret; 2081 2082 return get_errno(connect(sockfd, addr, addrlen)); 2083 } 2084 2085 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 2086 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 2087 int flags, int send) 2088 { 2089 abi_long ret, len; 2090 struct msghdr msg; 2091 int count; 2092 struct iovec *vec; 2093 abi_ulong target_vec; 2094 2095 if (msgp->msg_name) { 2096 msg.msg_namelen = tswap32(msgp->msg_namelen); 2097 msg.msg_name = alloca(msg.msg_namelen+1); 2098 ret = target_to_host_sockaddr(msg.msg_name, tswapal(msgp->msg_name), 2099 msg.msg_namelen); 2100 if (ret) { 2101 goto out2; 2102 } 2103 } else { 2104 msg.msg_name = NULL; 2105 msg.msg_namelen = 0; 2106 } 2107 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 2108 msg.msg_control = alloca(msg.msg_controllen); 2109 msg.msg_flags = tswap32(msgp->msg_flags); 2110 2111 count = tswapal(msgp->msg_iovlen); 2112 target_vec = tswapal(msgp->msg_iov); 2113 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 2114 target_vec, count, send); 2115 if (vec == NULL) { 2116 ret = -host_to_target_errno(errno); 2117 goto out2; 2118 } 2119 msg.msg_iovlen = count; 2120 msg.msg_iov = vec; 2121 2122 if (send) { 2123 ret = target_to_host_cmsg(&msg, msgp); 2124 if (ret == 0) 2125 ret = get_errno(sendmsg(fd, &msg, flags)); 2126 } else { 2127 ret = get_errno(recvmsg(fd, &msg, flags)); 2128 if (!is_error(ret)) { 2129 len = ret; 2130 ret = host_to_target_cmsg(msgp, &msg); 2131 if (!is_error(ret)) { 2132 msgp->msg_namelen = tswap32(msg.msg_namelen); 2133 if (msg.msg_name != NULL) { 2134 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 2135 msg.msg_name, msg.msg_namelen); 2136 if (ret) { 2137 goto out; 2138 } 2139 } 2140 2141 ret = len; 2142 } 2143 } 2144 } 2145 2146 out: 2147 unlock_iovec(vec, target_vec, count, !send); 2148 out2: 2149 return ret; 2150 } 2151 2152 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 2153 int flags, int send) 2154 { 2155 abi_long ret; 2156 struct target_msghdr *msgp; 2157 2158 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 2159 msgp, 2160 target_msg, 2161 send ? 1 : 0)) { 2162 return -TARGET_EFAULT; 2163 } 2164 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 2165 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 2166 return ret; 2167 } 2168 2169 #ifdef TARGET_NR_sendmmsg 2170 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 2171 * so it might not have this *mmsg-specific flag either. 2172 */ 2173 #ifndef MSG_WAITFORONE 2174 #define MSG_WAITFORONE 0x10000 2175 #endif 2176 2177 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 2178 unsigned int vlen, unsigned int flags, 2179 int send) 2180 { 2181 struct target_mmsghdr *mmsgp; 2182 abi_long ret = 0; 2183 int i; 2184 2185 if (vlen > UIO_MAXIOV) { 2186 vlen = UIO_MAXIOV; 2187 } 2188 2189 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 2190 if (!mmsgp) { 2191 return -TARGET_EFAULT; 2192 } 2193 2194 for (i = 0; i < vlen; i++) { 2195 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 2196 if (is_error(ret)) { 2197 break; 2198 } 2199 mmsgp[i].msg_len = tswap32(ret); 2200 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 2201 if (flags & MSG_WAITFORONE) { 2202 flags |= MSG_DONTWAIT; 2203 } 2204 } 2205 2206 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 2207 2208 /* Return number of datagrams sent if we sent any at all; 2209 * otherwise return the error. 2210 */ 2211 if (i) { 2212 return i; 2213 } 2214 return ret; 2215 } 2216 #endif 2217 2218 /* If we don't have a system accept4() then just call accept. 2219 * The callsites to do_accept4() will ensure that they don't 2220 * pass a non-zero flags argument in this config. 2221 */ 2222 #ifndef CONFIG_ACCEPT4 2223 static inline int accept4(int sockfd, struct sockaddr *addr, 2224 socklen_t *addrlen, int flags) 2225 { 2226 assert(flags == 0); 2227 return accept(sockfd, addr, addrlen); 2228 } 2229 #endif 2230 2231 /* do_accept4() Must return target values and target errnos. */ 2232 static abi_long do_accept4(int fd, abi_ulong target_addr, 2233 abi_ulong target_addrlen_addr, int flags) 2234 { 2235 socklen_t addrlen; 2236 void *addr; 2237 abi_long ret; 2238 int host_flags; 2239 2240 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 2241 2242 if (target_addr == 0) { 2243 return get_errno(accept4(fd, NULL, NULL, host_flags)); 2244 } 2245 2246 /* linux returns EINVAL if addrlen pointer is invalid */ 2247 if (get_user_u32(addrlen, target_addrlen_addr)) 2248 return -TARGET_EINVAL; 2249 2250 if ((int)addrlen < 0) { 2251 return -TARGET_EINVAL; 2252 } 2253 2254 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 2255 return -TARGET_EINVAL; 2256 2257 addr = alloca(addrlen); 2258 2259 ret = get_errno(accept4(fd, addr, &addrlen, host_flags)); 2260 if (!is_error(ret)) { 2261 host_to_target_sockaddr(target_addr, addr, addrlen); 2262 if (put_user_u32(addrlen, target_addrlen_addr)) 2263 ret = -TARGET_EFAULT; 2264 } 2265 return ret; 2266 } 2267 2268 /* do_getpeername() Must return target values and target errnos. */ 2269 static abi_long do_getpeername(int fd, abi_ulong target_addr, 2270 abi_ulong target_addrlen_addr) 2271 { 2272 socklen_t addrlen; 2273 void *addr; 2274 abi_long ret; 2275 2276 if (get_user_u32(addrlen, target_addrlen_addr)) 2277 return -TARGET_EFAULT; 2278 2279 if ((int)addrlen < 0) { 2280 return -TARGET_EINVAL; 2281 } 2282 2283 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 2284 return -TARGET_EFAULT; 2285 2286 addr = alloca(addrlen); 2287 2288 ret = get_errno(getpeername(fd, addr, &addrlen)); 2289 if (!is_error(ret)) { 2290 host_to_target_sockaddr(target_addr, addr, addrlen); 2291 if (put_user_u32(addrlen, target_addrlen_addr)) 2292 ret = -TARGET_EFAULT; 2293 } 2294 return ret; 2295 } 2296 2297 /* do_getsockname() Must return target values and target errnos. */ 2298 static abi_long do_getsockname(int fd, abi_ulong target_addr, 2299 abi_ulong target_addrlen_addr) 2300 { 2301 socklen_t addrlen; 2302 void *addr; 2303 abi_long ret; 2304 2305 if (get_user_u32(addrlen, target_addrlen_addr)) 2306 return -TARGET_EFAULT; 2307 2308 if ((int)addrlen < 0) { 2309 return -TARGET_EINVAL; 2310 } 2311 2312 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 2313 return -TARGET_EFAULT; 2314 2315 addr = alloca(addrlen); 2316 2317 ret = get_errno(getsockname(fd, addr, &addrlen)); 2318 if (!is_error(ret)) { 2319 host_to_target_sockaddr(target_addr, addr, addrlen); 2320 if (put_user_u32(addrlen, target_addrlen_addr)) 2321 ret = -TARGET_EFAULT; 2322 } 2323 return ret; 2324 } 2325 2326 /* do_socketpair() Must return target values and target errnos. */ 2327 static abi_long do_socketpair(int domain, int type, int protocol, 2328 abi_ulong target_tab_addr) 2329 { 2330 int tab[2]; 2331 abi_long ret; 2332 2333 target_to_host_sock_type(&type); 2334 2335 ret = get_errno(socketpair(domain, type, protocol, tab)); 2336 if (!is_error(ret)) { 2337 if (put_user_s32(tab[0], target_tab_addr) 2338 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 2339 ret = -TARGET_EFAULT; 2340 } 2341 return ret; 2342 } 2343 2344 /* do_sendto() Must return target values and target errnos. */ 2345 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 2346 abi_ulong target_addr, socklen_t addrlen) 2347 { 2348 void *addr; 2349 void *host_msg; 2350 abi_long ret; 2351 2352 if ((int)addrlen < 0) { 2353 return -TARGET_EINVAL; 2354 } 2355 2356 host_msg = lock_user(VERIFY_READ, msg, len, 1); 2357 if (!host_msg) 2358 return -TARGET_EFAULT; 2359 if (target_addr) { 2360 addr = alloca(addrlen+1); 2361 ret = target_to_host_sockaddr(addr, target_addr, addrlen); 2362 if (ret) { 2363 unlock_user(host_msg, msg, 0); 2364 return ret; 2365 } 2366 ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen)); 2367 } else { 2368 ret = get_errno(send(fd, host_msg, len, flags)); 2369 } 2370 unlock_user(host_msg, msg, 0); 2371 return ret; 2372 } 2373 2374 /* do_recvfrom() Must return target values and target errnos. */ 2375 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 2376 abi_ulong target_addr, 2377 abi_ulong target_addrlen) 2378 { 2379 socklen_t addrlen; 2380 void *addr; 2381 void *host_msg; 2382 abi_long ret; 2383 2384 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 2385 if (!host_msg) 2386 return -TARGET_EFAULT; 2387 if (target_addr) { 2388 if (get_user_u32(addrlen, target_addrlen)) { 2389 ret = -TARGET_EFAULT; 2390 goto fail; 2391 } 2392 if ((int)addrlen < 0) { 2393 ret = -TARGET_EINVAL; 2394 goto fail; 2395 } 2396 addr = alloca(addrlen); 2397 ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen)); 2398 } else { 2399 addr = NULL; /* To keep compiler quiet. */ 2400 ret = get_errno(qemu_recv(fd, host_msg, len, flags)); 2401 } 2402 if (!is_error(ret)) { 2403 if (target_addr) { 2404 host_to_target_sockaddr(target_addr, addr, addrlen); 2405 if (put_user_u32(addrlen, target_addrlen)) { 2406 ret = -TARGET_EFAULT; 2407 goto fail; 2408 } 2409 } 2410 unlock_user(host_msg, msg, len); 2411 } else { 2412 fail: 2413 unlock_user(host_msg, msg, 0); 2414 } 2415 return ret; 2416 } 2417 2418 #ifdef TARGET_NR_socketcall 2419 /* do_socketcall() Must return target values and target errnos. */ 2420 static abi_long do_socketcall(int num, abi_ulong vptr) 2421 { 2422 static const unsigned ac[] = { /* number of arguments per call */ 2423 [SOCKOP_socket] = 3, /* domain, type, protocol */ 2424 [SOCKOP_bind] = 3, /* sockfd, addr, addrlen */ 2425 [SOCKOP_connect] = 3, /* sockfd, addr, addrlen */ 2426 [SOCKOP_listen] = 2, /* sockfd, backlog */ 2427 [SOCKOP_accept] = 3, /* sockfd, addr, addrlen */ 2428 [SOCKOP_accept4] = 4, /* sockfd, addr, addrlen, flags */ 2429 [SOCKOP_getsockname] = 3, /* sockfd, addr, addrlen */ 2430 [SOCKOP_getpeername] = 3, /* sockfd, addr, addrlen */ 2431 [SOCKOP_socketpair] = 4, /* domain, type, protocol, tab */ 2432 [SOCKOP_send] = 4, /* sockfd, msg, len, flags */ 2433 [SOCKOP_recv] = 4, /* sockfd, msg, len, flags */ 2434 [SOCKOP_sendto] = 6, /* sockfd, msg, len, flags, addr, addrlen */ 2435 [SOCKOP_recvfrom] = 6, /* sockfd, msg, len, flags, addr, addrlen */ 2436 [SOCKOP_shutdown] = 2, /* sockfd, how */ 2437 [SOCKOP_sendmsg] = 3, /* sockfd, msg, flags */ 2438 [SOCKOP_recvmsg] = 3, /* sockfd, msg, flags */ 2439 [SOCKOP_setsockopt] = 5, /* sockfd, level, optname, optval, optlen */ 2440 [SOCKOP_getsockopt] = 5, /* sockfd, level, optname, optval, optlen */ 2441 }; 2442 abi_long a[6]; /* max 6 args */ 2443 2444 /* first, collect the arguments in a[] according to ac[] */ 2445 if (num >= 0 && num < ARRAY_SIZE(ac)) { 2446 unsigned i; 2447 assert(ARRAY_SIZE(a) >= ac[num]); /* ensure we have space for args */ 2448 for (i = 0; i < ac[num]; ++i) { 2449 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 2450 return -TARGET_EFAULT; 2451 } 2452 } 2453 } 2454 2455 /* now when we have the args, actually handle the call */ 2456 switch (num) { 2457 case SOCKOP_socket: /* domain, type, protocol */ 2458 return do_socket(a[0], a[1], a[2]); 2459 case SOCKOP_bind: /* sockfd, addr, addrlen */ 2460 return do_bind(a[0], a[1], a[2]); 2461 case SOCKOP_connect: /* sockfd, addr, addrlen */ 2462 return do_connect(a[0], a[1], a[2]); 2463 case SOCKOP_listen: /* sockfd, backlog */ 2464 return get_errno(listen(a[0], a[1])); 2465 case SOCKOP_accept: /* sockfd, addr, addrlen */ 2466 return do_accept4(a[0], a[1], a[2], 0); 2467 case SOCKOP_accept4: /* sockfd, addr, addrlen, flags */ 2468 return do_accept4(a[0], a[1], a[2], a[3]); 2469 case SOCKOP_getsockname: /* sockfd, addr, addrlen */ 2470 return do_getsockname(a[0], a[1], a[2]); 2471 case SOCKOP_getpeername: /* sockfd, addr, addrlen */ 2472 return do_getpeername(a[0], a[1], a[2]); 2473 case SOCKOP_socketpair: /* domain, type, protocol, tab */ 2474 return do_socketpair(a[0], a[1], a[2], a[3]); 2475 case SOCKOP_send: /* sockfd, msg, len, flags */ 2476 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 2477 case SOCKOP_recv: /* sockfd, msg, len, flags */ 2478 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 2479 case SOCKOP_sendto: /* sockfd, msg, len, flags, addr, addrlen */ 2480 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 2481 case SOCKOP_recvfrom: /* sockfd, msg, len, flags, addr, addrlen */ 2482 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 2483 case SOCKOP_shutdown: /* sockfd, how */ 2484 return get_errno(shutdown(a[0], a[1])); 2485 case SOCKOP_sendmsg: /* sockfd, msg, flags */ 2486 return do_sendrecvmsg(a[0], a[1], a[2], 1); 2487 case SOCKOP_recvmsg: /* sockfd, msg, flags */ 2488 return do_sendrecvmsg(a[0], a[1], a[2], 0); 2489 case SOCKOP_setsockopt: /* sockfd, level, optname, optval, optlen */ 2490 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 2491 case SOCKOP_getsockopt: /* sockfd, level, optname, optval, optlen */ 2492 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 2493 default: 2494 gemu_log("Unsupported socketcall: %d\n", num); 2495 return -TARGET_ENOSYS; 2496 } 2497 } 2498 #endif 2499 2500 #define N_SHM_REGIONS 32 2501 2502 static struct shm_region { 2503 abi_ulong start; 2504 abi_ulong size; 2505 } shm_regions[N_SHM_REGIONS]; 2506 2507 struct target_semid_ds 2508 { 2509 struct target_ipc_perm sem_perm; 2510 abi_ulong sem_otime; 2511 #if !defined(TARGET_PPC64) 2512 abi_ulong __unused1; 2513 #endif 2514 abi_ulong sem_ctime; 2515 #if !defined(TARGET_PPC64) 2516 abi_ulong __unused2; 2517 #endif 2518 abi_ulong sem_nsems; 2519 abi_ulong __unused3; 2520 abi_ulong __unused4; 2521 }; 2522 2523 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 2524 abi_ulong target_addr) 2525 { 2526 struct target_ipc_perm *target_ip; 2527 struct target_semid_ds *target_sd; 2528 2529 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 2530 return -TARGET_EFAULT; 2531 target_ip = &(target_sd->sem_perm); 2532 host_ip->__key = tswap32(target_ip->__key); 2533 host_ip->uid = tswap32(target_ip->uid); 2534 host_ip->gid = tswap32(target_ip->gid); 2535 host_ip->cuid = tswap32(target_ip->cuid); 2536 host_ip->cgid = tswap32(target_ip->cgid); 2537 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 2538 host_ip->mode = tswap32(target_ip->mode); 2539 #else 2540 host_ip->mode = tswap16(target_ip->mode); 2541 #endif 2542 #if defined(TARGET_PPC) 2543 host_ip->__seq = tswap32(target_ip->__seq); 2544 #else 2545 host_ip->__seq = tswap16(target_ip->__seq); 2546 #endif 2547 unlock_user_struct(target_sd, target_addr, 0); 2548 return 0; 2549 } 2550 2551 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 2552 struct ipc_perm *host_ip) 2553 { 2554 struct target_ipc_perm *target_ip; 2555 struct target_semid_ds *target_sd; 2556 2557 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 2558 return -TARGET_EFAULT; 2559 target_ip = &(target_sd->sem_perm); 2560 target_ip->__key = tswap32(host_ip->__key); 2561 target_ip->uid = tswap32(host_ip->uid); 2562 target_ip->gid = tswap32(host_ip->gid); 2563 target_ip->cuid = tswap32(host_ip->cuid); 2564 target_ip->cgid = tswap32(host_ip->cgid); 2565 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 2566 target_ip->mode = tswap32(host_ip->mode); 2567 #else 2568 target_ip->mode = tswap16(host_ip->mode); 2569 #endif 2570 #if defined(TARGET_PPC) 2571 target_ip->__seq = tswap32(host_ip->__seq); 2572 #else 2573 target_ip->__seq = tswap16(host_ip->__seq); 2574 #endif 2575 unlock_user_struct(target_sd, target_addr, 1); 2576 return 0; 2577 } 2578 2579 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 2580 abi_ulong target_addr) 2581 { 2582 struct target_semid_ds *target_sd; 2583 2584 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 2585 return -TARGET_EFAULT; 2586 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 2587 return -TARGET_EFAULT; 2588 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 2589 host_sd->sem_otime = tswapal(target_sd->sem_otime); 2590 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 2591 unlock_user_struct(target_sd, target_addr, 0); 2592 return 0; 2593 } 2594 2595 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 2596 struct semid_ds *host_sd) 2597 { 2598 struct target_semid_ds *target_sd; 2599 2600 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 2601 return -TARGET_EFAULT; 2602 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 2603 return -TARGET_EFAULT; 2604 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 2605 target_sd->sem_otime = tswapal(host_sd->sem_otime); 2606 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 2607 unlock_user_struct(target_sd, target_addr, 1); 2608 return 0; 2609 } 2610 2611 struct target_seminfo { 2612 int semmap; 2613 int semmni; 2614 int semmns; 2615 int semmnu; 2616 int semmsl; 2617 int semopm; 2618 int semume; 2619 int semusz; 2620 int semvmx; 2621 int semaem; 2622 }; 2623 2624 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 2625 struct seminfo *host_seminfo) 2626 { 2627 struct target_seminfo *target_seminfo; 2628 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 2629 return -TARGET_EFAULT; 2630 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 2631 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 2632 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 2633 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 2634 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 2635 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 2636 __put_user(host_seminfo->semume, &target_seminfo->semume); 2637 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 2638 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 2639 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 2640 unlock_user_struct(target_seminfo, target_addr, 1); 2641 return 0; 2642 } 2643 2644 union semun { 2645 int val; 2646 struct semid_ds *buf; 2647 unsigned short *array; 2648 struct seminfo *__buf; 2649 }; 2650 2651 union target_semun { 2652 int val; 2653 abi_ulong buf; 2654 abi_ulong array; 2655 abi_ulong __buf; 2656 }; 2657 2658 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 2659 abi_ulong target_addr) 2660 { 2661 int nsems; 2662 unsigned short *array; 2663 union semun semun; 2664 struct semid_ds semid_ds; 2665 int i, ret; 2666 2667 semun.buf = &semid_ds; 2668 2669 ret = semctl(semid, 0, IPC_STAT, semun); 2670 if (ret == -1) 2671 return get_errno(ret); 2672 2673 nsems = semid_ds.sem_nsems; 2674 2675 *host_array = malloc(nsems*sizeof(unsigned short)); 2676 if (!*host_array) { 2677 return -TARGET_ENOMEM; 2678 } 2679 array = lock_user(VERIFY_READ, target_addr, 2680 nsems*sizeof(unsigned short), 1); 2681 if (!array) { 2682 free(*host_array); 2683 return -TARGET_EFAULT; 2684 } 2685 2686 for(i=0; i<nsems; i++) { 2687 __get_user((*host_array)[i], &array[i]); 2688 } 2689 unlock_user(array, target_addr, 0); 2690 2691 return 0; 2692 } 2693 2694 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 2695 unsigned short **host_array) 2696 { 2697 int nsems; 2698 unsigned short *array; 2699 union semun semun; 2700 struct semid_ds semid_ds; 2701 int i, ret; 2702 2703 semun.buf = &semid_ds; 2704 2705 ret = semctl(semid, 0, IPC_STAT, semun); 2706 if (ret == -1) 2707 return get_errno(ret); 2708 2709 nsems = semid_ds.sem_nsems; 2710 2711 array = lock_user(VERIFY_WRITE, target_addr, 2712 nsems*sizeof(unsigned short), 0); 2713 if (!array) 2714 return -TARGET_EFAULT; 2715 2716 for(i=0; i<nsems; i++) { 2717 __put_user((*host_array)[i], &array[i]); 2718 } 2719 free(*host_array); 2720 unlock_user(array, target_addr, 1); 2721 2722 return 0; 2723 } 2724 2725 static inline abi_long do_semctl(int semid, int semnum, int cmd, 2726 union target_semun target_su) 2727 { 2728 union semun arg; 2729 struct semid_ds dsarg; 2730 unsigned short *array = NULL; 2731 struct seminfo seminfo; 2732 abi_long ret = -TARGET_EINVAL; 2733 abi_long err; 2734 cmd &= 0xff; 2735 2736 switch( cmd ) { 2737 case GETVAL: 2738 case SETVAL: 2739 /* In 64 bit cross-endian situations, we will erroneously pick up 2740 * the wrong half of the union for the "val" element. To rectify 2741 * this, the entire 8-byte structure is byteswapped, followed by 2742 * a swap of the 4 byte val field. In other cases, the data is 2743 * already in proper host byte order. */ 2744 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 2745 target_su.buf = tswapal(target_su.buf); 2746 arg.val = tswap32(target_su.val); 2747 } else { 2748 arg.val = target_su.val; 2749 } 2750 ret = get_errno(semctl(semid, semnum, cmd, arg)); 2751 break; 2752 case GETALL: 2753 case SETALL: 2754 err = target_to_host_semarray(semid, &array, target_su.array); 2755 if (err) 2756 return err; 2757 arg.array = array; 2758 ret = get_errno(semctl(semid, semnum, cmd, arg)); 2759 err = host_to_target_semarray(semid, target_su.array, &array); 2760 if (err) 2761 return err; 2762 break; 2763 case IPC_STAT: 2764 case IPC_SET: 2765 case SEM_STAT: 2766 err = target_to_host_semid_ds(&dsarg, target_su.buf); 2767 if (err) 2768 return err; 2769 arg.buf = &dsarg; 2770 ret = get_errno(semctl(semid, semnum, cmd, arg)); 2771 err = host_to_target_semid_ds(target_su.buf, &dsarg); 2772 if (err) 2773 return err; 2774 break; 2775 case IPC_INFO: 2776 case SEM_INFO: 2777 arg.__buf = &seminfo; 2778 ret = get_errno(semctl(semid, semnum, cmd, arg)); 2779 err = host_to_target_seminfo(target_su.__buf, &seminfo); 2780 if (err) 2781 return err; 2782 break; 2783 case IPC_RMID: 2784 case GETPID: 2785 case GETNCNT: 2786 case GETZCNT: 2787 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 2788 break; 2789 } 2790 2791 return ret; 2792 } 2793 2794 struct target_sembuf { 2795 unsigned short sem_num; 2796 short sem_op; 2797 short sem_flg; 2798 }; 2799 2800 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 2801 abi_ulong target_addr, 2802 unsigned nsops) 2803 { 2804 struct target_sembuf *target_sembuf; 2805 int i; 2806 2807 target_sembuf = lock_user(VERIFY_READ, target_addr, 2808 nsops*sizeof(struct target_sembuf), 1); 2809 if (!target_sembuf) 2810 return -TARGET_EFAULT; 2811 2812 for(i=0; i<nsops; i++) { 2813 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 2814 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 2815 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 2816 } 2817 2818 unlock_user(target_sembuf, target_addr, 0); 2819 2820 return 0; 2821 } 2822 2823 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops) 2824 { 2825 struct sembuf sops[nsops]; 2826 2827 if (target_to_host_sembuf(sops, ptr, nsops)) 2828 return -TARGET_EFAULT; 2829 2830 return get_errno(semop(semid, sops, nsops)); 2831 } 2832 2833 struct target_msqid_ds 2834 { 2835 struct target_ipc_perm msg_perm; 2836 abi_ulong msg_stime; 2837 #if TARGET_ABI_BITS == 32 2838 abi_ulong __unused1; 2839 #endif 2840 abi_ulong msg_rtime; 2841 #if TARGET_ABI_BITS == 32 2842 abi_ulong __unused2; 2843 #endif 2844 abi_ulong msg_ctime; 2845 #if TARGET_ABI_BITS == 32 2846 abi_ulong __unused3; 2847 #endif 2848 abi_ulong __msg_cbytes; 2849 abi_ulong msg_qnum; 2850 abi_ulong msg_qbytes; 2851 abi_ulong msg_lspid; 2852 abi_ulong msg_lrpid; 2853 abi_ulong __unused4; 2854 abi_ulong __unused5; 2855 }; 2856 2857 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 2858 abi_ulong target_addr) 2859 { 2860 struct target_msqid_ds *target_md; 2861 2862 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 2863 return -TARGET_EFAULT; 2864 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 2865 return -TARGET_EFAULT; 2866 host_md->msg_stime = tswapal(target_md->msg_stime); 2867 host_md->msg_rtime = tswapal(target_md->msg_rtime); 2868 host_md->msg_ctime = tswapal(target_md->msg_ctime); 2869 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 2870 host_md->msg_qnum = tswapal(target_md->msg_qnum); 2871 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 2872 host_md->msg_lspid = tswapal(target_md->msg_lspid); 2873 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 2874 unlock_user_struct(target_md, target_addr, 0); 2875 return 0; 2876 } 2877 2878 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 2879 struct msqid_ds *host_md) 2880 { 2881 struct target_msqid_ds *target_md; 2882 2883 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 2884 return -TARGET_EFAULT; 2885 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 2886 return -TARGET_EFAULT; 2887 target_md->msg_stime = tswapal(host_md->msg_stime); 2888 target_md->msg_rtime = tswapal(host_md->msg_rtime); 2889 target_md->msg_ctime = tswapal(host_md->msg_ctime); 2890 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 2891 target_md->msg_qnum = tswapal(host_md->msg_qnum); 2892 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 2893 target_md->msg_lspid = tswapal(host_md->msg_lspid); 2894 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 2895 unlock_user_struct(target_md, target_addr, 1); 2896 return 0; 2897 } 2898 2899 struct target_msginfo { 2900 int msgpool; 2901 int msgmap; 2902 int msgmax; 2903 int msgmnb; 2904 int msgmni; 2905 int msgssz; 2906 int msgtql; 2907 unsigned short int msgseg; 2908 }; 2909 2910 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 2911 struct msginfo *host_msginfo) 2912 { 2913 struct target_msginfo *target_msginfo; 2914 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 2915 return -TARGET_EFAULT; 2916 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 2917 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 2918 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 2919 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 2920 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 2921 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 2922 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 2923 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 2924 unlock_user_struct(target_msginfo, target_addr, 1); 2925 return 0; 2926 } 2927 2928 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 2929 { 2930 struct msqid_ds dsarg; 2931 struct msginfo msginfo; 2932 abi_long ret = -TARGET_EINVAL; 2933 2934 cmd &= 0xff; 2935 2936 switch (cmd) { 2937 case IPC_STAT: 2938 case IPC_SET: 2939 case MSG_STAT: 2940 if (target_to_host_msqid_ds(&dsarg,ptr)) 2941 return -TARGET_EFAULT; 2942 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 2943 if (host_to_target_msqid_ds(ptr,&dsarg)) 2944 return -TARGET_EFAULT; 2945 break; 2946 case IPC_RMID: 2947 ret = get_errno(msgctl(msgid, cmd, NULL)); 2948 break; 2949 case IPC_INFO: 2950 case MSG_INFO: 2951 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 2952 if (host_to_target_msginfo(ptr, &msginfo)) 2953 return -TARGET_EFAULT; 2954 break; 2955 } 2956 2957 return ret; 2958 } 2959 2960 struct target_msgbuf { 2961 abi_long mtype; 2962 char mtext[1]; 2963 }; 2964 2965 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 2966 ssize_t msgsz, int msgflg) 2967 { 2968 struct target_msgbuf *target_mb; 2969 struct msgbuf *host_mb; 2970 abi_long ret = 0; 2971 2972 if (msgsz < 0) { 2973 return -TARGET_EINVAL; 2974 } 2975 2976 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 2977 return -TARGET_EFAULT; 2978 host_mb = malloc(msgsz+sizeof(long)); 2979 if (!host_mb) { 2980 unlock_user_struct(target_mb, msgp, 0); 2981 return -TARGET_ENOMEM; 2982 } 2983 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 2984 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 2985 ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg)); 2986 free(host_mb); 2987 unlock_user_struct(target_mb, msgp, 0); 2988 2989 return ret; 2990 } 2991 2992 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 2993 unsigned int msgsz, abi_long msgtyp, 2994 int msgflg) 2995 { 2996 struct target_msgbuf *target_mb; 2997 char *target_mtext; 2998 struct msgbuf *host_mb; 2999 abi_long ret = 0; 3000 3001 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 3002 return -TARGET_EFAULT; 3003 3004 host_mb = g_malloc(msgsz+sizeof(long)); 3005 ret = get_errno(msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 3006 3007 if (ret > 0) { 3008 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 3009 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 3010 if (!target_mtext) { 3011 ret = -TARGET_EFAULT; 3012 goto end; 3013 } 3014 memcpy(target_mb->mtext, host_mb->mtext, ret); 3015 unlock_user(target_mtext, target_mtext_addr, ret); 3016 } 3017 3018 target_mb->mtype = tswapal(host_mb->mtype); 3019 3020 end: 3021 if (target_mb) 3022 unlock_user_struct(target_mb, msgp, 1); 3023 g_free(host_mb); 3024 return ret; 3025 } 3026 3027 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 3028 abi_ulong target_addr) 3029 { 3030 struct target_shmid_ds *target_sd; 3031 3032 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3033 return -TARGET_EFAULT; 3034 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 3035 return -TARGET_EFAULT; 3036 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 3037 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 3038 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 3039 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 3040 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 3041 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 3042 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 3043 unlock_user_struct(target_sd, target_addr, 0); 3044 return 0; 3045 } 3046 3047 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 3048 struct shmid_ds *host_sd) 3049 { 3050 struct target_shmid_ds *target_sd; 3051 3052 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3053 return -TARGET_EFAULT; 3054 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 3055 return -TARGET_EFAULT; 3056 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 3057 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 3058 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 3059 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 3060 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 3061 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 3062 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 3063 unlock_user_struct(target_sd, target_addr, 1); 3064 return 0; 3065 } 3066 3067 struct target_shminfo { 3068 abi_ulong shmmax; 3069 abi_ulong shmmin; 3070 abi_ulong shmmni; 3071 abi_ulong shmseg; 3072 abi_ulong shmall; 3073 }; 3074 3075 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 3076 struct shminfo *host_shminfo) 3077 { 3078 struct target_shminfo *target_shminfo; 3079 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 3080 return -TARGET_EFAULT; 3081 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 3082 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 3083 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 3084 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 3085 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 3086 unlock_user_struct(target_shminfo, target_addr, 1); 3087 return 0; 3088 } 3089 3090 struct target_shm_info { 3091 int used_ids; 3092 abi_ulong shm_tot; 3093 abi_ulong shm_rss; 3094 abi_ulong shm_swp; 3095 abi_ulong swap_attempts; 3096 abi_ulong swap_successes; 3097 }; 3098 3099 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 3100 struct shm_info *host_shm_info) 3101 { 3102 struct target_shm_info *target_shm_info; 3103 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 3104 return -TARGET_EFAULT; 3105 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 3106 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 3107 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 3108 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 3109 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 3110 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 3111 unlock_user_struct(target_shm_info, target_addr, 1); 3112 return 0; 3113 } 3114 3115 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 3116 { 3117 struct shmid_ds dsarg; 3118 struct shminfo shminfo; 3119 struct shm_info shm_info; 3120 abi_long ret = -TARGET_EINVAL; 3121 3122 cmd &= 0xff; 3123 3124 switch(cmd) { 3125 case IPC_STAT: 3126 case IPC_SET: 3127 case SHM_STAT: 3128 if (target_to_host_shmid_ds(&dsarg, buf)) 3129 return -TARGET_EFAULT; 3130 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 3131 if (host_to_target_shmid_ds(buf, &dsarg)) 3132 return -TARGET_EFAULT; 3133 break; 3134 case IPC_INFO: 3135 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 3136 if (host_to_target_shminfo(buf, &shminfo)) 3137 return -TARGET_EFAULT; 3138 break; 3139 case SHM_INFO: 3140 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 3141 if (host_to_target_shm_info(buf, &shm_info)) 3142 return -TARGET_EFAULT; 3143 break; 3144 case IPC_RMID: 3145 case SHM_LOCK: 3146 case SHM_UNLOCK: 3147 ret = get_errno(shmctl(shmid, cmd, NULL)); 3148 break; 3149 } 3150 3151 return ret; 3152 } 3153 3154 static inline abi_ulong do_shmat(int shmid, abi_ulong shmaddr, int shmflg) 3155 { 3156 abi_long raddr; 3157 void *host_raddr; 3158 struct shmid_ds shm_info; 3159 int i,ret; 3160 3161 /* find out the length of the shared memory segment */ 3162 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 3163 if (is_error(ret)) { 3164 /* can't get length, bail out */ 3165 return ret; 3166 } 3167 3168 mmap_lock(); 3169 3170 if (shmaddr) 3171 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg); 3172 else { 3173 abi_ulong mmap_start; 3174 3175 mmap_start = mmap_find_vma(0, shm_info.shm_segsz); 3176 3177 if (mmap_start == -1) { 3178 errno = ENOMEM; 3179 host_raddr = (void *)-1; 3180 } else 3181 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP); 3182 } 3183 3184 if (host_raddr == (void *)-1) { 3185 mmap_unlock(); 3186 return get_errno((long)host_raddr); 3187 } 3188 raddr=h2g((unsigned long)host_raddr); 3189 3190 page_set_flags(raddr, raddr + shm_info.shm_segsz, 3191 PAGE_VALID | PAGE_READ | 3192 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE)); 3193 3194 for (i = 0; i < N_SHM_REGIONS; i++) { 3195 if (shm_regions[i].start == 0) { 3196 shm_regions[i].start = raddr; 3197 shm_regions[i].size = shm_info.shm_segsz; 3198 break; 3199 } 3200 } 3201 3202 mmap_unlock(); 3203 return raddr; 3204 3205 } 3206 3207 static inline abi_long do_shmdt(abi_ulong shmaddr) 3208 { 3209 int i; 3210 3211 for (i = 0; i < N_SHM_REGIONS; ++i) { 3212 if (shm_regions[i].start == shmaddr) { 3213 shm_regions[i].start = 0; 3214 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 3215 break; 3216 } 3217 } 3218 3219 return get_errno(shmdt(g2h(shmaddr))); 3220 } 3221 3222 #ifdef TARGET_NR_ipc 3223 /* ??? This only works with linear mappings. */ 3224 /* do_ipc() must return target values and target errnos. */ 3225 static abi_long do_ipc(unsigned int call, abi_long first, 3226 abi_long second, abi_long third, 3227 abi_long ptr, abi_long fifth) 3228 { 3229 int version; 3230 abi_long ret = 0; 3231 3232 version = call >> 16; 3233 call &= 0xffff; 3234 3235 switch (call) { 3236 case IPCOP_semop: 3237 ret = do_semop(first, ptr, second); 3238 break; 3239 3240 case IPCOP_semget: 3241 ret = get_errno(semget(first, second, third)); 3242 break; 3243 3244 case IPCOP_semctl: { 3245 /* The semun argument to semctl is passed by value, so dereference the 3246 * ptr argument. */ 3247 abi_ulong atptr; 3248 get_user_ual(atptr, ptr); 3249 ret = do_semctl(first, second, third, 3250 (union target_semun) atptr); 3251 break; 3252 } 3253 3254 case IPCOP_msgget: 3255 ret = get_errno(msgget(first, second)); 3256 break; 3257 3258 case IPCOP_msgsnd: 3259 ret = do_msgsnd(first, ptr, second, third); 3260 break; 3261 3262 case IPCOP_msgctl: 3263 ret = do_msgctl(first, second, ptr); 3264 break; 3265 3266 case IPCOP_msgrcv: 3267 switch (version) { 3268 case 0: 3269 { 3270 struct target_ipc_kludge { 3271 abi_long msgp; 3272 abi_long msgtyp; 3273 } *tmp; 3274 3275 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 3276 ret = -TARGET_EFAULT; 3277 break; 3278 } 3279 3280 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 3281 3282 unlock_user_struct(tmp, ptr, 0); 3283 break; 3284 } 3285 default: 3286 ret = do_msgrcv(first, ptr, second, fifth, third); 3287 } 3288 break; 3289 3290 case IPCOP_shmat: 3291 switch (version) { 3292 default: 3293 { 3294 abi_ulong raddr; 3295 raddr = do_shmat(first, ptr, second); 3296 if (is_error(raddr)) 3297 return get_errno(raddr); 3298 if (put_user_ual(raddr, third)) 3299 return -TARGET_EFAULT; 3300 break; 3301 } 3302 case 1: 3303 ret = -TARGET_EINVAL; 3304 break; 3305 } 3306 break; 3307 case IPCOP_shmdt: 3308 ret = do_shmdt(ptr); 3309 break; 3310 3311 case IPCOP_shmget: 3312 /* IPC_* flag values are the same on all linux platforms */ 3313 ret = get_errno(shmget(first, second, third)); 3314 break; 3315 3316 /* IPC_* and SHM_* command values are the same on all linux platforms */ 3317 case IPCOP_shmctl: 3318 ret = do_shmctl(first, second, ptr); 3319 break; 3320 default: 3321 gemu_log("Unsupported ipc call: %d (version %d)\n", call, version); 3322 ret = -TARGET_ENOSYS; 3323 break; 3324 } 3325 return ret; 3326 } 3327 #endif 3328 3329 /* kernel structure types definitions */ 3330 3331 #define STRUCT(name, ...) STRUCT_ ## name, 3332 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 3333 enum { 3334 #include "syscall_types.h" 3335 STRUCT_MAX 3336 }; 3337 #undef STRUCT 3338 #undef STRUCT_SPECIAL 3339 3340 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 3341 #define STRUCT_SPECIAL(name) 3342 #include "syscall_types.h" 3343 #undef STRUCT 3344 #undef STRUCT_SPECIAL 3345 3346 typedef struct IOCTLEntry IOCTLEntry; 3347 3348 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, 3349 int fd, int cmd, abi_long arg); 3350 3351 struct IOCTLEntry { 3352 int target_cmd; 3353 unsigned int host_cmd; 3354 const char *name; 3355 int access; 3356 do_ioctl_fn *do_ioctl; 3357 const argtype arg_type[5]; 3358 }; 3359 3360 #define IOC_R 0x0001 3361 #define IOC_W 0x0002 3362 #define IOC_RW (IOC_R | IOC_W) 3363 3364 #define MAX_STRUCT_SIZE 4096 3365 3366 #ifdef CONFIG_FIEMAP 3367 /* So fiemap access checks don't overflow on 32 bit systems. 3368 * This is very slightly smaller than the limit imposed by 3369 * the underlying kernel. 3370 */ 3371 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 3372 / sizeof(struct fiemap_extent)) 3373 3374 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 3375 int fd, int cmd, abi_long arg) 3376 { 3377 /* The parameter for this ioctl is a struct fiemap followed 3378 * by an array of struct fiemap_extent whose size is set 3379 * in fiemap->fm_extent_count. The array is filled in by the 3380 * ioctl. 3381 */ 3382 int target_size_in, target_size_out; 3383 struct fiemap *fm; 3384 const argtype *arg_type = ie->arg_type; 3385 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 3386 void *argptr, *p; 3387 abi_long ret; 3388 int i, extent_size = thunk_type_size(extent_arg_type, 0); 3389 uint32_t outbufsz; 3390 int free_fm = 0; 3391 3392 assert(arg_type[0] == TYPE_PTR); 3393 assert(ie->access == IOC_RW); 3394 arg_type++; 3395 target_size_in = thunk_type_size(arg_type, 0); 3396 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 3397 if (!argptr) { 3398 return -TARGET_EFAULT; 3399 } 3400 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 3401 unlock_user(argptr, arg, 0); 3402 fm = (struct fiemap *)buf_temp; 3403 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 3404 return -TARGET_EINVAL; 3405 } 3406 3407 outbufsz = sizeof (*fm) + 3408 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 3409 3410 if (outbufsz > MAX_STRUCT_SIZE) { 3411 /* We can't fit all the extents into the fixed size buffer. 3412 * Allocate one that is large enough and use it instead. 3413 */ 3414 fm = malloc(outbufsz); 3415 if (!fm) { 3416 return -TARGET_ENOMEM; 3417 } 3418 memcpy(fm, buf_temp, sizeof(struct fiemap)); 3419 free_fm = 1; 3420 } 3421 ret = get_errno(ioctl(fd, ie->host_cmd, fm)); 3422 if (!is_error(ret)) { 3423 target_size_out = target_size_in; 3424 /* An extent_count of 0 means we were only counting the extents 3425 * so there are no structs to copy 3426 */ 3427 if (fm->fm_extent_count != 0) { 3428 target_size_out += fm->fm_mapped_extents * extent_size; 3429 } 3430 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 3431 if (!argptr) { 3432 ret = -TARGET_EFAULT; 3433 } else { 3434 /* Convert the struct fiemap */ 3435 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 3436 if (fm->fm_extent_count != 0) { 3437 p = argptr + target_size_in; 3438 /* ...and then all the struct fiemap_extents */ 3439 for (i = 0; i < fm->fm_mapped_extents; i++) { 3440 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 3441 THUNK_TARGET); 3442 p += extent_size; 3443 } 3444 } 3445 unlock_user(argptr, arg, target_size_out); 3446 } 3447 } 3448 if (free_fm) { 3449 free(fm); 3450 } 3451 return ret; 3452 } 3453 #endif 3454 3455 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 3456 int fd, int cmd, abi_long arg) 3457 { 3458 const argtype *arg_type = ie->arg_type; 3459 int target_size; 3460 void *argptr; 3461 int ret; 3462 struct ifconf *host_ifconf; 3463 uint32_t outbufsz; 3464 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 3465 int target_ifreq_size; 3466 int nb_ifreq; 3467 int free_buf = 0; 3468 int i; 3469 int target_ifc_len; 3470 abi_long target_ifc_buf; 3471 int host_ifc_len; 3472 char *host_ifc_buf; 3473 3474 assert(arg_type[0] == TYPE_PTR); 3475 assert(ie->access == IOC_RW); 3476 3477 arg_type++; 3478 target_size = thunk_type_size(arg_type, 0); 3479 3480 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3481 if (!argptr) 3482 return -TARGET_EFAULT; 3483 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 3484 unlock_user(argptr, arg, 0); 3485 3486 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 3487 target_ifc_len = host_ifconf->ifc_len; 3488 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 3489 3490 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0); 3491 nb_ifreq = target_ifc_len / target_ifreq_size; 3492 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 3493 3494 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 3495 if (outbufsz > MAX_STRUCT_SIZE) { 3496 /* We can't fit all the extents into the fixed size buffer. 3497 * Allocate one that is large enough and use it instead. 3498 */ 3499 host_ifconf = malloc(outbufsz); 3500 if (!host_ifconf) { 3501 return -TARGET_ENOMEM; 3502 } 3503 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 3504 free_buf = 1; 3505 } 3506 host_ifc_buf = (char*)host_ifconf + sizeof(*host_ifconf); 3507 3508 host_ifconf->ifc_len = host_ifc_len; 3509 host_ifconf->ifc_buf = host_ifc_buf; 3510 3511 ret = get_errno(ioctl(fd, ie->host_cmd, host_ifconf)); 3512 if (!is_error(ret)) { 3513 /* convert host ifc_len to target ifc_len */ 3514 3515 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 3516 target_ifc_len = nb_ifreq * target_ifreq_size; 3517 host_ifconf->ifc_len = target_ifc_len; 3518 3519 /* restore target ifc_buf */ 3520 3521 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 3522 3523 /* copy struct ifconf to target user */ 3524 3525 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 3526 if (!argptr) 3527 return -TARGET_EFAULT; 3528 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 3529 unlock_user(argptr, arg, target_size); 3530 3531 /* copy ifreq[] to target user */ 3532 3533 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 3534 for (i = 0; i < nb_ifreq ; i++) { 3535 thunk_convert(argptr + i * target_ifreq_size, 3536 host_ifc_buf + i * sizeof(struct ifreq), 3537 ifreq_arg_type, THUNK_TARGET); 3538 } 3539 unlock_user(argptr, target_ifc_buf, target_ifc_len); 3540 } 3541 3542 if (free_buf) { 3543 free(host_ifconf); 3544 } 3545 3546 return ret; 3547 } 3548 3549 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 3550 int cmd, abi_long arg) 3551 { 3552 void *argptr; 3553 struct dm_ioctl *host_dm; 3554 abi_long guest_data; 3555 uint32_t guest_data_size; 3556 int target_size; 3557 const argtype *arg_type = ie->arg_type; 3558 abi_long ret; 3559 void *big_buf = NULL; 3560 char *host_data; 3561 3562 arg_type++; 3563 target_size = thunk_type_size(arg_type, 0); 3564 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3565 if (!argptr) { 3566 ret = -TARGET_EFAULT; 3567 goto out; 3568 } 3569 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 3570 unlock_user(argptr, arg, 0); 3571 3572 /* buf_temp is too small, so fetch things into a bigger buffer */ 3573 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 3574 memcpy(big_buf, buf_temp, target_size); 3575 buf_temp = big_buf; 3576 host_dm = big_buf; 3577 3578 guest_data = arg + host_dm->data_start; 3579 if ((guest_data - arg) < 0) { 3580 ret = -EINVAL; 3581 goto out; 3582 } 3583 guest_data_size = host_dm->data_size - host_dm->data_start; 3584 host_data = (char*)host_dm + host_dm->data_start; 3585 3586 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 3587 switch (ie->host_cmd) { 3588 case DM_REMOVE_ALL: 3589 case DM_LIST_DEVICES: 3590 case DM_DEV_CREATE: 3591 case DM_DEV_REMOVE: 3592 case DM_DEV_SUSPEND: 3593 case DM_DEV_STATUS: 3594 case DM_DEV_WAIT: 3595 case DM_TABLE_STATUS: 3596 case DM_TABLE_CLEAR: 3597 case DM_TABLE_DEPS: 3598 case DM_LIST_VERSIONS: 3599 /* no input data */ 3600 break; 3601 case DM_DEV_RENAME: 3602 case DM_DEV_SET_GEOMETRY: 3603 /* data contains only strings */ 3604 memcpy(host_data, argptr, guest_data_size); 3605 break; 3606 case DM_TARGET_MSG: 3607 memcpy(host_data, argptr, guest_data_size); 3608 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 3609 break; 3610 case DM_TABLE_LOAD: 3611 { 3612 void *gspec = argptr; 3613 void *cur_data = host_data; 3614 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 3615 int spec_size = thunk_type_size(arg_type, 0); 3616 int i; 3617 3618 for (i = 0; i < host_dm->target_count; i++) { 3619 struct dm_target_spec *spec = cur_data; 3620 uint32_t next; 3621 int slen; 3622 3623 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 3624 slen = strlen((char*)gspec + spec_size) + 1; 3625 next = spec->next; 3626 spec->next = sizeof(*spec) + slen; 3627 strcpy((char*)&spec[1], gspec + spec_size); 3628 gspec += next; 3629 cur_data += spec->next; 3630 } 3631 break; 3632 } 3633 default: 3634 ret = -TARGET_EINVAL; 3635 unlock_user(argptr, guest_data, 0); 3636 goto out; 3637 } 3638 unlock_user(argptr, guest_data, 0); 3639 3640 ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); 3641 if (!is_error(ret)) { 3642 guest_data = arg + host_dm->data_start; 3643 guest_data_size = host_dm->data_size - host_dm->data_start; 3644 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 3645 switch (ie->host_cmd) { 3646 case DM_REMOVE_ALL: 3647 case DM_DEV_CREATE: 3648 case DM_DEV_REMOVE: 3649 case DM_DEV_RENAME: 3650 case DM_DEV_SUSPEND: 3651 case DM_DEV_STATUS: 3652 case DM_TABLE_LOAD: 3653 case DM_TABLE_CLEAR: 3654 case DM_TARGET_MSG: 3655 case DM_DEV_SET_GEOMETRY: 3656 /* no return data */ 3657 break; 3658 case DM_LIST_DEVICES: 3659 { 3660 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 3661 uint32_t remaining_data = guest_data_size; 3662 void *cur_data = argptr; 3663 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 3664 int nl_size = 12; /* can't use thunk_size due to alignment */ 3665 3666 while (1) { 3667 uint32_t next = nl->next; 3668 if (next) { 3669 nl->next = nl_size + (strlen(nl->name) + 1); 3670 } 3671 if (remaining_data < nl->next) { 3672 host_dm->flags |= DM_BUFFER_FULL_FLAG; 3673 break; 3674 } 3675 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 3676 strcpy(cur_data + nl_size, nl->name); 3677 cur_data += nl->next; 3678 remaining_data -= nl->next; 3679 if (!next) { 3680 break; 3681 } 3682 nl = (void*)nl + next; 3683 } 3684 break; 3685 } 3686 case DM_DEV_WAIT: 3687 case DM_TABLE_STATUS: 3688 { 3689 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 3690 void *cur_data = argptr; 3691 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 3692 int spec_size = thunk_type_size(arg_type, 0); 3693 int i; 3694 3695 for (i = 0; i < host_dm->target_count; i++) { 3696 uint32_t next = spec->next; 3697 int slen = strlen((char*)&spec[1]) + 1; 3698 spec->next = (cur_data - argptr) + spec_size + slen; 3699 if (guest_data_size < spec->next) { 3700 host_dm->flags |= DM_BUFFER_FULL_FLAG; 3701 break; 3702 } 3703 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 3704 strcpy(cur_data + spec_size, (char*)&spec[1]); 3705 cur_data = argptr + spec->next; 3706 spec = (void*)host_dm + host_dm->data_start + next; 3707 } 3708 break; 3709 } 3710 case DM_TABLE_DEPS: 3711 { 3712 void *hdata = (void*)host_dm + host_dm->data_start; 3713 int count = *(uint32_t*)hdata; 3714 uint64_t *hdev = hdata + 8; 3715 uint64_t *gdev = argptr + 8; 3716 int i; 3717 3718 *(uint32_t*)argptr = tswap32(count); 3719 for (i = 0; i < count; i++) { 3720 *gdev = tswap64(*hdev); 3721 gdev++; 3722 hdev++; 3723 } 3724 break; 3725 } 3726 case DM_LIST_VERSIONS: 3727 { 3728 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 3729 uint32_t remaining_data = guest_data_size; 3730 void *cur_data = argptr; 3731 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 3732 int vers_size = thunk_type_size(arg_type, 0); 3733 3734 while (1) { 3735 uint32_t next = vers->next; 3736 if (next) { 3737 vers->next = vers_size + (strlen(vers->name) + 1); 3738 } 3739 if (remaining_data < vers->next) { 3740 host_dm->flags |= DM_BUFFER_FULL_FLAG; 3741 break; 3742 } 3743 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 3744 strcpy(cur_data + vers_size, vers->name); 3745 cur_data += vers->next; 3746 remaining_data -= vers->next; 3747 if (!next) { 3748 break; 3749 } 3750 vers = (void*)vers + next; 3751 } 3752 break; 3753 } 3754 default: 3755 unlock_user(argptr, guest_data, 0); 3756 ret = -TARGET_EINVAL; 3757 goto out; 3758 } 3759 unlock_user(argptr, guest_data, guest_data_size); 3760 3761 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 3762 if (!argptr) { 3763 ret = -TARGET_EFAULT; 3764 goto out; 3765 } 3766 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 3767 unlock_user(argptr, arg, target_size); 3768 } 3769 out: 3770 g_free(big_buf); 3771 return ret; 3772 } 3773 3774 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 3775 int cmd, abi_long arg) 3776 { 3777 void *argptr; 3778 int target_size; 3779 const argtype *arg_type = ie->arg_type; 3780 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 3781 abi_long ret; 3782 3783 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 3784 struct blkpg_partition host_part; 3785 3786 /* Read and convert blkpg */ 3787 arg_type++; 3788 target_size = thunk_type_size(arg_type, 0); 3789 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3790 if (!argptr) { 3791 ret = -TARGET_EFAULT; 3792 goto out; 3793 } 3794 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 3795 unlock_user(argptr, arg, 0); 3796 3797 switch (host_blkpg->op) { 3798 case BLKPG_ADD_PARTITION: 3799 case BLKPG_DEL_PARTITION: 3800 /* payload is struct blkpg_partition */ 3801 break; 3802 default: 3803 /* Unknown opcode */ 3804 ret = -TARGET_EINVAL; 3805 goto out; 3806 } 3807 3808 /* Read and convert blkpg->data */ 3809 arg = (abi_long)(uintptr_t)host_blkpg->data; 3810 target_size = thunk_type_size(part_arg_type, 0); 3811 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3812 if (!argptr) { 3813 ret = -TARGET_EFAULT; 3814 goto out; 3815 } 3816 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 3817 unlock_user(argptr, arg, 0); 3818 3819 /* Swizzle the data pointer to our local copy and call! */ 3820 host_blkpg->data = &host_part; 3821 ret = get_errno(ioctl(fd, ie->host_cmd, host_blkpg)); 3822 3823 out: 3824 return ret; 3825 } 3826 3827 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 3828 int fd, int cmd, abi_long arg) 3829 { 3830 const argtype *arg_type = ie->arg_type; 3831 const StructEntry *se; 3832 const argtype *field_types; 3833 const int *dst_offsets, *src_offsets; 3834 int target_size; 3835 void *argptr; 3836 abi_ulong *target_rt_dev_ptr; 3837 unsigned long *host_rt_dev_ptr; 3838 abi_long ret; 3839 int i; 3840 3841 assert(ie->access == IOC_W); 3842 assert(*arg_type == TYPE_PTR); 3843 arg_type++; 3844 assert(*arg_type == TYPE_STRUCT); 3845 target_size = thunk_type_size(arg_type, 0); 3846 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3847 if (!argptr) { 3848 return -TARGET_EFAULT; 3849 } 3850 arg_type++; 3851 assert(*arg_type == (int)STRUCT_rtentry); 3852 se = struct_entries + *arg_type++; 3853 assert(se->convert[0] == NULL); 3854 /* convert struct here to be able to catch rt_dev string */ 3855 field_types = se->field_types; 3856 dst_offsets = se->field_offsets[THUNK_HOST]; 3857 src_offsets = se->field_offsets[THUNK_TARGET]; 3858 for (i = 0; i < se->nb_fields; i++) { 3859 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 3860 assert(*field_types == TYPE_PTRVOID); 3861 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 3862 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 3863 if (*target_rt_dev_ptr != 0) { 3864 *host_rt_dev_ptr = (unsigned long)lock_user_string( 3865 tswapal(*target_rt_dev_ptr)); 3866 if (!*host_rt_dev_ptr) { 3867 unlock_user(argptr, arg, 0); 3868 return -TARGET_EFAULT; 3869 } 3870 } else { 3871 *host_rt_dev_ptr = 0; 3872 } 3873 field_types++; 3874 continue; 3875 } 3876 field_types = thunk_convert(buf_temp + dst_offsets[i], 3877 argptr + src_offsets[i], 3878 field_types, THUNK_HOST); 3879 } 3880 unlock_user(argptr, arg, 0); 3881 3882 ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); 3883 if (*host_rt_dev_ptr != 0) { 3884 unlock_user((void *)*host_rt_dev_ptr, 3885 *target_rt_dev_ptr, 0); 3886 } 3887 return ret; 3888 } 3889 3890 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 3891 int fd, int cmd, abi_long arg) 3892 { 3893 int sig = target_to_host_signal(arg); 3894 return get_errno(ioctl(fd, ie->host_cmd, sig)); 3895 } 3896 3897 static IOCTLEntry ioctl_entries[] = { 3898 #define IOCTL(cmd, access, ...) \ 3899 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 3900 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 3901 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 3902 #include "ioctls.h" 3903 { 0, 0, }, 3904 }; 3905 3906 /* ??? Implement proper locking for ioctls. */ 3907 /* do_ioctl() Must return target values and target errnos. */ 3908 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 3909 { 3910 const IOCTLEntry *ie; 3911 const argtype *arg_type; 3912 abi_long ret; 3913 uint8_t buf_temp[MAX_STRUCT_SIZE]; 3914 int target_size; 3915 void *argptr; 3916 3917 ie = ioctl_entries; 3918 for(;;) { 3919 if (ie->target_cmd == 0) { 3920 gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 3921 return -TARGET_ENOSYS; 3922 } 3923 if (ie->target_cmd == cmd) 3924 break; 3925 ie++; 3926 } 3927 arg_type = ie->arg_type; 3928 #if defined(DEBUG) 3929 gemu_log("ioctl: cmd=0x%04lx (%s)\n", (long)cmd, ie->name); 3930 #endif 3931 if (ie->do_ioctl) { 3932 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 3933 } 3934 3935 switch(arg_type[0]) { 3936 case TYPE_NULL: 3937 /* no argument */ 3938 ret = get_errno(ioctl(fd, ie->host_cmd)); 3939 break; 3940 case TYPE_PTRVOID: 3941 case TYPE_INT: 3942 ret = get_errno(ioctl(fd, ie->host_cmd, arg)); 3943 break; 3944 case TYPE_PTR: 3945 arg_type++; 3946 target_size = thunk_type_size(arg_type, 0); 3947 switch(ie->access) { 3948 case IOC_R: 3949 ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); 3950 if (!is_error(ret)) { 3951 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 3952 if (!argptr) 3953 return -TARGET_EFAULT; 3954 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 3955 unlock_user(argptr, arg, target_size); 3956 } 3957 break; 3958 case IOC_W: 3959 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3960 if (!argptr) 3961 return -TARGET_EFAULT; 3962 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 3963 unlock_user(argptr, arg, 0); 3964 ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); 3965 break; 3966 default: 3967 case IOC_RW: 3968 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 3969 if (!argptr) 3970 return -TARGET_EFAULT; 3971 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 3972 unlock_user(argptr, arg, 0); 3973 ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); 3974 if (!is_error(ret)) { 3975 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 3976 if (!argptr) 3977 return -TARGET_EFAULT; 3978 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 3979 unlock_user(argptr, arg, target_size); 3980 } 3981 break; 3982 } 3983 break; 3984 default: 3985 gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", 3986 (long)cmd, arg_type[0]); 3987 ret = -TARGET_ENOSYS; 3988 break; 3989 } 3990 return ret; 3991 } 3992 3993 static const bitmask_transtbl iflag_tbl[] = { 3994 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 3995 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 3996 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 3997 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 3998 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 3999 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 4000 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 4001 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 4002 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 4003 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 4004 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 4005 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 4006 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 4007 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 4008 { 0, 0, 0, 0 } 4009 }; 4010 4011 static const bitmask_transtbl oflag_tbl[] = { 4012 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 4013 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 4014 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 4015 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 4016 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 4017 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 4018 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 4019 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 4020 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 4021 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 4022 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 4023 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 4024 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 4025 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 4026 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 4027 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 4028 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 4029 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 4030 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 4031 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 4032 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 4033 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 4034 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 4035 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 4036 { 0, 0, 0, 0 } 4037 }; 4038 4039 static const bitmask_transtbl cflag_tbl[] = { 4040 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 4041 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 4042 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 4043 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 4044 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 4045 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 4046 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 4047 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 4048 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 4049 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 4050 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 4051 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 4052 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 4053 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 4054 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 4055 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 4056 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 4057 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 4058 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 4059 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 4060 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 4061 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 4062 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 4063 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 4064 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 4065 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 4066 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 4067 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 4068 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 4069 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 4070 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 4071 { 0, 0, 0, 0 } 4072 }; 4073 4074 static const bitmask_transtbl lflag_tbl[] = { 4075 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 4076 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 4077 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 4078 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 4079 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 4080 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 4081 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 4082 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 4083 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 4084 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 4085 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 4086 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 4087 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 4088 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 4089 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 4090 { 0, 0, 0, 0 } 4091 }; 4092 4093 static void target_to_host_termios (void *dst, const void *src) 4094 { 4095 struct host_termios *host = dst; 4096 const struct target_termios *target = src; 4097 4098 host->c_iflag = 4099 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 4100 host->c_oflag = 4101 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 4102 host->c_cflag = 4103 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 4104 host->c_lflag = 4105 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 4106 host->c_line = target->c_line; 4107 4108 memset(host->c_cc, 0, sizeof(host->c_cc)); 4109 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 4110 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 4111 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 4112 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 4113 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 4114 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 4115 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 4116 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 4117 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 4118 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 4119 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 4120 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 4121 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 4122 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 4123 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 4124 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 4125 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 4126 } 4127 4128 static void host_to_target_termios (void *dst, const void *src) 4129 { 4130 struct target_termios *target = dst; 4131 const struct host_termios *host = src; 4132 4133 target->c_iflag = 4134 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 4135 target->c_oflag = 4136 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 4137 target->c_cflag = 4138 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 4139 target->c_lflag = 4140 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 4141 target->c_line = host->c_line; 4142 4143 memset(target->c_cc, 0, sizeof(target->c_cc)); 4144 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 4145 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 4146 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 4147 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 4148 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 4149 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 4150 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 4151 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 4152 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 4153 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 4154 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 4155 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 4156 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 4157 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 4158 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 4159 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 4160 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 4161 } 4162 4163 static const StructEntry struct_termios_def = { 4164 .convert = { host_to_target_termios, target_to_host_termios }, 4165 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 4166 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 4167 }; 4168 4169 static bitmask_transtbl mmap_flags_tbl[] = { 4170 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 4171 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 4172 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 4173 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS }, 4174 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN }, 4175 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE }, 4176 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE }, 4177 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 4178 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, MAP_NORESERVE, 4179 MAP_NORESERVE }, 4180 { 0, 0, 0, 0 } 4181 }; 4182 4183 #if defined(TARGET_I386) 4184 4185 /* NOTE: there is really one LDT for all the threads */ 4186 static uint8_t *ldt_table; 4187 4188 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 4189 { 4190 int size; 4191 void *p; 4192 4193 if (!ldt_table) 4194 return 0; 4195 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 4196 if (size > bytecount) 4197 size = bytecount; 4198 p = lock_user(VERIFY_WRITE, ptr, size, 0); 4199 if (!p) 4200 return -TARGET_EFAULT; 4201 /* ??? Should this by byteswapped? */ 4202 memcpy(p, ldt_table, size); 4203 unlock_user(p, ptr, size); 4204 return size; 4205 } 4206 4207 /* XXX: add locking support */ 4208 static abi_long write_ldt(CPUX86State *env, 4209 abi_ulong ptr, unsigned long bytecount, int oldmode) 4210 { 4211 struct target_modify_ldt_ldt_s ldt_info; 4212 struct target_modify_ldt_ldt_s *target_ldt_info; 4213 int seg_32bit, contents, read_exec_only, limit_in_pages; 4214 int seg_not_present, useable, lm; 4215 uint32_t *lp, entry_1, entry_2; 4216 4217 if (bytecount != sizeof(ldt_info)) 4218 return -TARGET_EINVAL; 4219 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 4220 return -TARGET_EFAULT; 4221 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 4222 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 4223 ldt_info.limit = tswap32(target_ldt_info->limit); 4224 ldt_info.flags = tswap32(target_ldt_info->flags); 4225 unlock_user_struct(target_ldt_info, ptr, 0); 4226 4227 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 4228 return -TARGET_EINVAL; 4229 seg_32bit = ldt_info.flags & 1; 4230 contents = (ldt_info.flags >> 1) & 3; 4231 read_exec_only = (ldt_info.flags >> 3) & 1; 4232 limit_in_pages = (ldt_info.flags >> 4) & 1; 4233 seg_not_present = (ldt_info.flags >> 5) & 1; 4234 useable = (ldt_info.flags >> 6) & 1; 4235 #ifdef TARGET_ABI32 4236 lm = 0; 4237 #else 4238 lm = (ldt_info.flags >> 7) & 1; 4239 #endif 4240 if (contents == 3) { 4241 if (oldmode) 4242 return -TARGET_EINVAL; 4243 if (seg_not_present == 0) 4244 return -TARGET_EINVAL; 4245 } 4246 /* allocate the LDT */ 4247 if (!ldt_table) { 4248 env->ldt.base = target_mmap(0, 4249 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 4250 PROT_READ|PROT_WRITE, 4251 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 4252 if (env->ldt.base == -1) 4253 return -TARGET_ENOMEM; 4254 memset(g2h(env->ldt.base), 0, 4255 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 4256 env->ldt.limit = 0xffff; 4257 ldt_table = g2h(env->ldt.base); 4258 } 4259 4260 /* NOTE: same code as Linux kernel */ 4261 /* Allow LDTs to be cleared by the user. */ 4262 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 4263 if (oldmode || 4264 (contents == 0 && 4265 read_exec_only == 1 && 4266 seg_32bit == 0 && 4267 limit_in_pages == 0 && 4268 seg_not_present == 1 && 4269 useable == 0 )) { 4270 entry_1 = 0; 4271 entry_2 = 0; 4272 goto install; 4273 } 4274 } 4275 4276 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 4277 (ldt_info.limit & 0x0ffff); 4278 entry_2 = (ldt_info.base_addr & 0xff000000) | 4279 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 4280 (ldt_info.limit & 0xf0000) | 4281 ((read_exec_only ^ 1) << 9) | 4282 (contents << 10) | 4283 ((seg_not_present ^ 1) << 15) | 4284 (seg_32bit << 22) | 4285 (limit_in_pages << 23) | 4286 (lm << 21) | 4287 0x7000; 4288 if (!oldmode) 4289 entry_2 |= (useable << 20); 4290 4291 /* Install the new entry ... */ 4292 install: 4293 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 4294 lp[0] = tswap32(entry_1); 4295 lp[1] = tswap32(entry_2); 4296 return 0; 4297 } 4298 4299 /* specific and weird i386 syscalls */ 4300 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 4301 unsigned long bytecount) 4302 { 4303 abi_long ret; 4304 4305 switch (func) { 4306 case 0: 4307 ret = read_ldt(ptr, bytecount); 4308 break; 4309 case 1: 4310 ret = write_ldt(env, ptr, bytecount, 1); 4311 break; 4312 case 0x11: 4313 ret = write_ldt(env, ptr, bytecount, 0); 4314 break; 4315 default: 4316 ret = -TARGET_ENOSYS; 4317 break; 4318 } 4319 return ret; 4320 } 4321 4322 #if defined(TARGET_I386) && defined(TARGET_ABI32) 4323 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 4324 { 4325 uint64_t *gdt_table = g2h(env->gdt.base); 4326 struct target_modify_ldt_ldt_s ldt_info; 4327 struct target_modify_ldt_ldt_s *target_ldt_info; 4328 int seg_32bit, contents, read_exec_only, limit_in_pages; 4329 int seg_not_present, useable, lm; 4330 uint32_t *lp, entry_1, entry_2; 4331 int i; 4332 4333 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 4334 if (!target_ldt_info) 4335 return -TARGET_EFAULT; 4336 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 4337 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 4338 ldt_info.limit = tswap32(target_ldt_info->limit); 4339 ldt_info.flags = tswap32(target_ldt_info->flags); 4340 if (ldt_info.entry_number == -1) { 4341 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 4342 if (gdt_table[i] == 0) { 4343 ldt_info.entry_number = i; 4344 target_ldt_info->entry_number = tswap32(i); 4345 break; 4346 } 4347 } 4348 } 4349 unlock_user_struct(target_ldt_info, ptr, 1); 4350 4351 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 4352 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 4353 return -TARGET_EINVAL; 4354 seg_32bit = ldt_info.flags & 1; 4355 contents = (ldt_info.flags >> 1) & 3; 4356 read_exec_only = (ldt_info.flags >> 3) & 1; 4357 limit_in_pages = (ldt_info.flags >> 4) & 1; 4358 seg_not_present = (ldt_info.flags >> 5) & 1; 4359 useable = (ldt_info.flags >> 6) & 1; 4360 #ifdef TARGET_ABI32 4361 lm = 0; 4362 #else 4363 lm = (ldt_info.flags >> 7) & 1; 4364 #endif 4365 4366 if (contents == 3) { 4367 if (seg_not_present == 0) 4368 return -TARGET_EINVAL; 4369 } 4370 4371 /* NOTE: same code as Linux kernel */ 4372 /* Allow LDTs to be cleared by the user. */ 4373 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 4374 if ((contents == 0 && 4375 read_exec_only == 1 && 4376 seg_32bit == 0 && 4377 limit_in_pages == 0 && 4378 seg_not_present == 1 && 4379 useable == 0 )) { 4380 entry_1 = 0; 4381 entry_2 = 0; 4382 goto install; 4383 } 4384 } 4385 4386 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 4387 (ldt_info.limit & 0x0ffff); 4388 entry_2 = (ldt_info.base_addr & 0xff000000) | 4389 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 4390 (ldt_info.limit & 0xf0000) | 4391 ((read_exec_only ^ 1) << 9) | 4392 (contents << 10) | 4393 ((seg_not_present ^ 1) << 15) | 4394 (seg_32bit << 22) | 4395 (limit_in_pages << 23) | 4396 (useable << 20) | 4397 (lm << 21) | 4398 0x7000; 4399 4400 /* Install the new entry ... */ 4401 install: 4402 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 4403 lp[0] = tswap32(entry_1); 4404 lp[1] = tswap32(entry_2); 4405 return 0; 4406 } 4407 4408 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 4409 { 4410 struct target_modify_ldt_ldt_s *target_ldt_info; 4411 uint64_t *gdt_table = g2h(env->gdt.base); 4412 uint32_t base_addr, limit, flags; 4413 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 4414 int seg_not_present, useable, lm; 4415 uint32_t *lp, entry_1, entry_2; 4416 4417 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 4418 if (!target_ldt_info) 4419 return -TARGET_EFAULT; 4420 idx = tswap32(target_ldt_info->entry_number); 4421 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 4422 idx > TARGET_GDT_ENTRY_TLS_MAX) { 4423 unlock_user_struct(target_ldt_info, ptr, 1); 4424 return -TARGET_EINVAL; 4425 } 4426 lp = (uint32_t *)(gdt_table + idx); 4427 entry_1 = tswap32(lp[0]); 4428 entry_2 = tswap32(lp[1]); 4429 4430 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 4431 contents = (entry_2 >> 10) & 3; 4432 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 4433 seg_32bit = (entry_2 >> 22) & 1; 4434 limit_in_pages = (entry_2 >> 23) & 1; 4435 useable = (entry_2 >> 20) & 1; 4436 #ifdef TARGET_ABI32 4437 lm = 0; 4438 #else 4439 lm = (entry_2 >> 21) & 1; 4440 #endif 4441 flags = (seg_32bit << 0) | (contents << 1) | 4442 (read_exec_only << 3) | (limit_in_pages << 4) | 4443 (seg_not_present << 5) | (useable << 6) | (lm << 7); 4444 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 4445 base_addr = (entry_1 >> 16) | 4446 (entry_2 & 0xff000000) | 4447 ((entry_2 & 0xff) << 16); 4448 target_ldt_info->base_addr = tswapal(base_addr); 4449 target_ldt_info->limit = tswap32(limit); 4450 target_ldt_info->flags = tswap32(flags); 4451 unlock_user_struct(target_ldt_info, ptr, 1); 4452 return 0; 4453 } 4454 #endif /* TARGET_I386 && TARGET_ABI32 */ 4455 4456 #ifndef TARGET_ABI32 4457 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 4458 { 4459 abi_long ret = 0; 4460 abi_ulong val; 4461 int idx; 4462 4463 switch(code) { 4464 case TARGET_ARCH_SET_GS: 4465 case TARGET_ARCH_SET_FS: 4466 if (code == TARGET_ARCH_SET_GS) 4467 idx = R_GS; 4468 else 4469 idx = R_FS; 4470 cpu_x86_load_seg(env, idx, 0); 4471 env->segs[idx].base = addr; 4472 break; 4473 case TARGET_ARCH_GET_GS: 4474 case TARGET_ARCH_GET_FS: 4475 if (code == TARGET_ARCH_GET_GS) 4476 idx = R_GS; 4477 else 4478 idx = R_FS; 4479 val = env->segs[idx].base; 4480 if (put_user(val, addr, abi_ulong)) 4481 ret = -TARGET_EFAULT; 4482 break; 4483 default: 4484 ret = -TARGET_EINVAL; 4485 break; 4486 } 4487 return ret; 4488 } 4489 #endif 4490 4491 #endif /* defined(TARGET_I386) */ 4492 4493 #define NEW_STACK_SIZE 0x40000 4494 4495 4496 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 4497 typedef struct { 4498 CPUArchState *env; 4499 pthread_mutex_t mutex; 4500 pthread_cond_t cond; 4501 pthread_t thread; 4502 uint32_t tid; 4503 abi_ulong child_tidptr; 4504 abi_ulong parent_tidptr; 4505 sigset_t sigmask; 4506 } new_thread_info; 4507 4508 static void *clone_func(void *arg) 4509 { 4510 new_thread_info *info = arg; 4511 CPUArchState *env; 4512 CPUState *cpu; 4513 TaskState *ts; 4514 4515 rcu_register_thread(); 4516 env = info->env; 4517 cpu = ENV_GET_CPU(env); 4518 thread_cpu = cpu; 4519 ts = (TaskState *)cpu->opaque; 4520 info->tid = gettid(); 4521 cpu->host_tid = info->tid; 4522 task_settid(ts); 4523 if (info->child_tidptr) 4524 put_user_u32(info->tid, info->child_tidptr); 4525 if (info->parent_tidptr) 4526 put_user_u32(info->tid, info->parent_tidptr); 4527 /* Enable signals. */ 4528 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 4529 /* Signal to the parent that we're ready. */ 4530 pthread_mutex_lock(&info->mutex); 4531 pthread_cond_broadcast(&info->cond); 4532 pthread_mutex_unlock(&info->mutex); 4533 /* Wait until the parent has finshed initializing the tls state. */ 4534 pthread_mutex_lock(&clone_lock); 4535 pthread_mutex_unlock(&clone_lock); 4536 cpu_loop(env); 4537 /* never exits */ 4538 return NULL; 4539 } 4540 4541 /* do_fork() Must return host values and target errnos (unlike most 4542 do_*() functions). */ 4543 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 4544 abi_ulong parent_tidptr, target_ulong newtls, 4545 abi_ulong child_tidptr) 4546 { 4547 CPUState *cpu = ENV_GET_CPU(env); 4548 int ret; 4549 TaskState *ts; 4550 CPUState *new_cpu; 4551 CPUArchState *new_env; 4552 unsigned int nptl_flags; 4553 sigset_t sigmask; 4554 4555 /* Emulate vfork() with fork() */ 4556 if (flags & CLONE_VFORK) 4557 flags &= ~(CLONE_VFORK | CLONE_VM); 4558 4559 if (flags & CLONE_VM) { 4560 TaskState *parent_ts = (TaskState *)cpu->opaque; 4561 new_thread_info info; 4562 pthread_attr_t attr; 4563 4564 ts = g_malloc0(sizeof(TaskState)); 4565 init_task_state(ts); 4566 /* we create a new CPU instance. */ 4567 new_env = cpu_copy(env); 4568 /* Init regs that differ from the parent. */ 4569 cpu_clone_regs(new_env, newsp); 4570 new_cpu = ENV_GET_CPU(new_env); 4571 new_cpu->opaque = ts; 4572 ts->bprm = parent_ts->bprm; 4573 ts->info = parent_ts->info; 4574 nptl_flags = flags; 4575 flags &= ~CLONE_NPTL_FLAGS2; 4576 4577 if (nptl_flags & CLONE_CHILD_CLEARTID) { 4578 ts->child_tidptr = child_tidptr; 4579 } 4580 4581 if (nptl_flags & CLONE_SETTLS) 4582 cpu_set_tls (new_env, newtls); 4583 4584 /* Grab a mutex so that thread setup appears atomic. */ 4585 pthread_mutex_lock(&clone_lock); 4586 4587 memset(&info, 0, sizeof(info)); 4588 pthread_mutex_init(&info.mutex, NULL); 4589 pthread_mutex_lock(&info.mutex); 4590 pthread_cond_init(&info.cond, NULL); 4591 info.env = new_env; 4592 if (nptl_flags & CLONE_CHILD_SETTID) 4593 info.child_tidptr = child_tidptr; 4594 if (nptl_flags & CLONE_PARENT_SETTID) 4595 info.parent_tidptr = parent_tidptr; 4596 4597 ret = pthread_attr_init(&attr); 4598 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 4599 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 4600 /* It is not safe to deliver signals until the child has finished 4601 initializing, so temporarily block all signals. */ 4602 sigfillset(&sigmask); 4603 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 4604 4605 ret = pthread_create(&info.thread, &attr, clone_func, &info); 4606 /* TODO: Free new CPU state if thread creation failed. */ 4607 4608 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 4609 pthread_attr_destroy(&attr); 4610 if (ret == 0) { 4611 /* Wait for the child to initialize. */ 4612 pthread_cond_wait(&info.cond, &info.mutex); 4613 ret = info.tid; 4614 if (flags & CLONE_PARENT_SETTID) 4615 put_user_u32(ret, parent_tidptr); 4616 } else { 4617 ret = -1; 4618 } 4619 pthread_mutex_unlock(&info.mutex); 4620 pthread_cond_destroy(&info.cond); 4621 pthread_mutex_destroy(&info.mutex); 4622 pthread_mutex_unlock(&clone_lock); 4623 } else { 4624 /* if no CLONE_VM, we consider it is a fork */ 4625 if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0) 4626 return -EINVAL; 4627 fork_start(); 4628 ret = fork(); 4629 if (ret == 0) { 4630 /* Child Process. */ 4631 rcu_after_fork(); 4632 cpu_clone_regs(env, newsp); 4633 fork_end(1); 4634 /* There is a race condition here. The parent process could 4635 theoretically read the TID in the child process before the child 4636 tid is set. This would require using either ptrace 4637 (not implemented) or having *_tidptr to point at a shared memory 4638 mapping. We can't repeat the spinlock hack used above because 4639 the child process gets its own copy of the lock. */ 4640 if (flags & CLONE_CHILD_SETTID) 4641 put_user_u32(gettid(), child_tidptr); 4642 if (flags & CLONE_PARENT_SETTID) 4643 put_user_u32(gettid(), parent_tidptr); 4644 ts = (TaskState *)cpu->opaque; 4645 if (flags & CLONE_SETTLS) 4646 cpu_set_tls (env, newtls); 4647 if (flags & CLONE_CHILD_CLEARTID) 4648 ts->child_tidptr = child_tidptr; 4649 } else { 4650 fork_end(0); 4651 } 4652 } 4653 return ret; 4654 } 4655 4656 /* warning : doesn't handle linux specific flags... */ 4657 static int target_to_host_fcntl_cmd(int cmd) 4658 { 4659 switch(cmd) { 4660 case TARGET_F_DUPFD: 4661 case TARGET_F_GETFD: 4662 case TARGET_F_SETFD: 4663 case TARGET_F_GETFL: 4664 case TARGET_F_SETFL: 4665 return cmd; 4666 case TARGET_F_GETLK: 4667 return F_GETLK; 4668 case TARGET_F_SETLK: 4669 return F_SETLK; 4670 case TARGET_F_SETLKW: 4671 return F_SETLKW; 4672 case TARGET_F_GETOWN: 4673 return F_GETOWN; 4674 case TARGET_F_SETOWN: 4675 return F_SETOWN; 4676 case TARGET_F_GETSIG: 4677 return F_GETSIG; 4678 case TARGET_F_SETSIG: 4679 return F_SETSIG; 4680 #if TARGET_ABI_BITS == 32 4681 case TARGET_F_GETLK64: 4682 return F_GETLK64; 4683 case TARGET_F_SETLK64: 4684 return F_SETLK64; 4685 case TARGET_F_SETLKW64: 4686 return F_SETLKW64; 4687 #endif 4688 case TARGET_F_SETLEASE: 4689 return F_SETLEASE; 4690 case TARGET_F_GETLEASE: 4691 return F_GETLEASE; 4692 #ifdef F_DUPFD_CLOEXEC 4693 case TARGET_F_DUPFD_CLOEXEC: 4694 return F_DUPFD_CLOEXEC; 4695 #endif 4696 case TARGET_F_NOTIFY: 4697 return F_NOTIFY; 4698 #ifdef F_GETOWN_EX 4699 case TARGET_F_GETOWN_EX: 4700 return F_GETOWN_EX; 4701 #endif 4702 #ifdef F_SETOWN_EX 4703 case TARGET_F_SETOWN_EX: 4704 return F_SETOWN_EX; 4705 #endif 4706 default: 4707 return -TARGET_EINVAL; 4708 } 4709 return -TARGET_EINVAL; 4710 } 4711 4712 #define TRANSTBL_CONVERT(a) { -1, TARGET_##a, -1, a } 4713 static const bitmask_transtbl flock_tbl[] = { 4714 TRANSTBL_CONVERT(F_RDLCK), 4715 TRANSTBL_CONVERT(F_WRLCK), 4716 TRANSTBL_CONVERT(F_UNLCK), 4717 TRANSTBL_CONVERT(F_EXLCK), 4718 TRANSTBL_CONVERT(F_SHLCK), 4719 { 0, 0, 0, 0 } 4720 }; 4721 4722 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 4723 { 4724 struct flock fl; 4725 struct target_flock *target_fl; 4726 struct flock64 fl64; 4727 struct target_flock64 *target_fl64; 4728 #ifdef F_GETOWN_EX 4729 struct f_owner_ex fox; 4730 struct target_f_owner_ex *target_fox; 4731 #endif 4732 abi_long ret; 4733 int host_cmd = target_to_host_fcntl_cmd(cmd); 4734 4735 if (host_cmd == -TARGET_EINVAL) 4736 return host_cmd; 4737 4738 switch(cmd) { 4739 case TARGET_F_GETLK: 4740 if (!lock_user_struct(VERIFY_READ, target_fl, arg, 1)) 4741 return -TARGET_EFAULT; 4742 fl.l_type = 4743 target_to_host_bitmask(tswap16(target_fl->l_type), flock_tbl); 4744 fl.l_whence = tswap16(target_fl->l_whence); 4745 fl.l_start = tswapal(target_fl->l_start); 4746 fl.l_len = tswapal(target_fl->l_len); 4747 fl.l_pid = tswap32(target_fl->l_pid); 4748 unlock_user_struct(target_fl, arg, 0); 4749 ret = get_errno(fcntl(fd, host_cmd, &fl)); 4750 if (ret == 0) { 4751 if (!lock_user_struct(VERIFY_WRITE, target_fl, arg, 0)) 4752 return -TARGET_EFAULT; 4753 target_fl->l_type = 4754 host_to_target_bitmask(tswap16(fl.l_type), flock_tbl); 4755 target_fl->l_whence = tswap16(fl.l_whence); 4756 target_fl->l_start = tswapal(fl.l_start); 4757 target_fl->l_len = tswapal(fl.l_len); 4758 target_fl->l_pid = tswap32(fl.l_pid); 4759 unlock_user_struct(target_fl, arg, 1); 4760 } 4761 break; 4762 4763 case TARGET_F_SETLK: 4764 case TARGET_F_SETLKW: 4765 if (!lock_user_struct(VERIFY_READ, target_fl, arg, 1)) 4766 return -TARGET_EFAULT; 4767 fl.l_type = 4768 target_to_host_bitmask(tswap16(target_fl->l_type), flock_tbl); 4769 fl.l_whence = tswap16(target_fl->l_whence); 4770 fl.l_start = tswapal(target_fl->l_start); 4771 fl.l_len = tswapal(target_fl->l_len); 4772 fl.l_pid = tswap32(target_fl->l_pid); 4773 unlock_user_struct(target_fl, arg, 0); 4774 ret = get_errno(fcntl(fd, host_cmd, &fl)); 4775 break; 4776 4777 case TARGET_F_GETLK64: 4778 if (!lock_user_struct(VERIFY_READ, target_fl64, arg, 1)) 4779 return -TARGET_EFAULT; 4780 fl64.l_type = 4781 target_to_host_bitmask(tswap16(target_fl64->l_type), flock_tbl) >> 1; 4782 fl64.l_whence = tswap16(target_fl64->l_whence); 4783 fl64.l_start = tswap64(target_fl64->l_start); 4784 fl64.l_len = tswap64(target_fl64->l_len); 4785 fl64.l_pid = tswap32(target_fl64->l_pid); 4786 unlock_user_struct(target_fl64, arg, 0); 4787 ret = get_errno(fcntl(fd, host_cmd, &fl64)); 4788 if (ret == 0) { 4789 if (!lock_user_struct(VERIFY_WRITE, target_fl64, arg, 0)) 4790 return -TARGET_EFAULT; 4791 target_fl64->l_type = 4792 host_to_target_bitmask(tswap16(fl64.l_type), flock_tbl) >> 1; 4793 target_fl64->l_whence = tswap16(fl64.l_whence); 4794 target_fl64->l_start = tswap64(fl64.l_start); 4795 target_fl64->l_len = tswap64(fl64.l_len); 4796 target_fl64->l_pid = tswap32(fl64.l_pid); 4797 unlock_user_struct(target_fl64, arg, 1); 4798 } 4799 break; 4800 case TARGET_F_SETLK64: 4801 case TARGET_F_SETLKW64: 4802 if (!lock_user_struct(VERIFY_READ, target_fl64, arg, 1)) 4803 return -TARGET_EFAULT; 4804 fl64.l_type = 4805 target_to_host_bitmask(tswap16(target_fl64->l_type), flock_tbl) >> 1; 4806 fl64.l_whence = tswap16(target_fl64->l_whence); 4807 fl64.l_start = tswap64(target_fl64->l_start); 4808 fl64.l_len = tswap64(target_fl64->l_len); 4809 fl64.l_pid = tswap32(target_fl64->l_pid); 4810 unlock_user_struct(target_fl64, arg, 0); 4811 ret = get_errno(fcntl(fd, host_cmd, &fl64)); 4812 break; 4813 4814 case TARGET_F_GETFL: 4815 ret = get_errno(fcntl(fd, host_cmd, arg)); 4816 if (ret >= 0) { 4817 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 4818 } 4819 break; 4820 4821 case TARGET_F_SETFL: 4822 ret = get_errno(fcntl(fd, host_cmd, target_to_host_bitmask(arg, fcntl_flags_tbl))); 4823 break; 4824 4825 #ifdef F_GETOWN_EX 4826 case TARGET_F_GETOWN_EX: 4827 ret = get_errno(fcntl(fd, host_cmd, &fox)); 4828 if (ret >= 0) { 4829 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 4830 return -TARGET_EFAULT; 4831 target_fox->type = tswap32(fox.type); 4832 target_fox->pid = tswap32(fox.pid); 4833 unlock_user_struct(target_fox, arg, 1); 4834 } 4835 break; 4836 #endif 4837 4838 #ifdef F_SETOWN_EX 4839 case TARGET_F_SETOWN_EX: 4840 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 4841 return -TARGET_EFAULT; 4842 fox.type = tswap32(target_fox->type); 4843 fox.pid = tswap32(target_fox->pid); 4844 unlock_user_struct(target_fox, arg, 0); 4845 ret = get_errno(fcntl(fd, host_cmd, &fox)); 4846 break; 4847 #endif 4848 4849 case TARGET_F_SETOWN: 4850 case TARGET_F_GETOWN: 4851 case TARGET_F_SETSIG: 4852 case TARGET_F_GETSIG: 4853 case TARGET_F_SETLEASE: 4854 case TARGET_F_GETLEASE: 4855 ret = get_errno(fcntl(fd, host_cmd, arg)); 4856 break; 4857 4858 default: 4859 ret = get_errno(fcntl(fd, cmd, arg)); 4860 break; 4861 } 4862 return ret; 4863 } 4864 4865 #ifdef USE_UID16 4866 4867 static inline int high2lowuid(int uid) 4868 { 4869 if (uid > 65535) 4870 return 65534; 4871 else 4872 return uid; 4873 } 4874 4875 static inline int high2lowgid(int gid) 4876 { 4877 if (gid > 65535) 4878 return 65534; 4879 else 4880 return gid; 4881 } 4882 4883 static inline int low2highuid(int uid) 4884 { 4885 if ((int16_t)uid == -1) 4886 return -1; 4887 else 4888 return uid; 4889 } 4890 4891 static inline int low2highgid(int gid) 4892 { 4893 if ((int16_t)gid == -1) 4894 return -1; 4895 else 4896 return gid; 4897 } 4898 static inline int tswapid(int id) 4899 { 4900 return tswap16(id); 4901 } 4902 4903 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 4904 4905 #else /* !USE_UID16 */ 4906 static inline int high2lowuid(int uid) 4907 { 4908 return uid; 4909 } 4910 static inline int high2lowgid(int gid) 4911 { 4912 return gid; 4913 } 4914 static inline int low2highuid(int uid) 4915 { 4916 return uid; 4917 } 4918 static inline int low2highgid(int gid) 4919 { 4920 return gid; 4921 } 4922 static inline int tswapid(int id) 4923 { 4924 return tswap32(id); 4925 } 4926 4927 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 4928 4929 #endif /* USE_UID16 */ 4930 4931 void syscall_init(void) 4932 { 4933 IOCTLEntry *ie; 4934 const argtype *arg_type; 4935 int size; 4936 int i; 4937 4938 thunk_init(STRUCT_MAX); 4939 4940 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 4941 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 4942 #include "syscall_types.h" 4943 #undef STRUCT 4944 #undef STRUCT_SPECIAL 4945 4946 /* Build target_to_host_errno_table[] table from 4947 * host_to_target_errno_table[]. */ 4948 for (i = 0; i < ERRNO_TABLE_SIZE; i++) { 4949 target_to_host_errno_table[host_to_target_errno_table[i]] = i; 4950 } 4951 4952 /* we patch the ioctl size if necessary. We rely on the fact that 4953 no ioctl has all the bits at '1' in the size field */ 4954 ie = ioctl_entries; 4955 while (ie->target_cmd != 0) { 4956 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 4957 TARGET_IOC_SIZEMASK) { 4958 arg_type = ie->arg_type; 4959 if (arg_type[0] != TYPE_PTR) { 4960 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 4961 ie->target_cmd); 4962 exit(1); 4963 } 4964 arg_type++; 4965 size = thunk_type_size(arg_type, 0); 4966 ie->target_cmd = (ie->target_cmd & 4967 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 4968 (size << TARGET_IOC_SIZESHIFT); 4969 } 4970 4971 /* automatic consistency check if same arch */ 4972 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 4973 (defined(__x86_64__) && defined(TARGET_X86_64)) 4974 if (unlikely(ie->target_cmd != ie->host_cmd)) { 4975 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 4976 ie->name, ie->target_cmd, ie->host_cmd); 4977 } 4978 #endif 4979 ie++; 4980 } 4981 } 4982 4983 #if TARGET_ABI_BITS == 32 4984 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) 4985 { 4986 #ifdef TARGET_WORDS_BIGENDIAN 4987 return ((uint64_t)word0 << 32) | word1; 4988 #else 4989 return ((uint64_t)word1 << 32) | word0; 4990 #endif 4991 } 4992 #else /* TARGET_ABI_BITS == 32 */ 4993 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) 4994 { 4995 return word0; 4996 } 4997 #endif /* TARGET_ABI_BITS != 32 */ 4998 4999 #ifdef TARGET_NR_truncate64 5000 static inline abi_long target_truncate64(void *cpu_env, const char *arg1, 5001 abi_long arg2, 5002 abi_long arg3, 5003 abi_long arg4) 5004 { 5005 if (regpairs_aligned(cpu_env)) { 5006 arg2 = arg3; 5007 arg3 = arg4; 5008 } 5009 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 5010 } 5011 #endif 5012 5013 #ifdef TARGET_NR_ftruncate64 5014 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, 5015 abi_long arg2, 5016 abi_long arg3, 5017 abi_long arg4) 5018 { 5019 if (regpairs_aligned(cpu_env)) { 5020 arg2 = arg3; 5021 arg3 = arg4; 5022 } 5023 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 5024 } 5025 #endif 5026 5027 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 5028 abi_ulong target_addr) 5029 { 5030 struct target_timespec *target_ts; 5031 5032 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) 5033 return -TARGET_EFAULT; 5034 host_ts->tv_sec = tswapal(target_ts->tv_sec); 5035 host_ts->tv_nsec = tswapal(target_ts->tv_nsec); 5036 unlock_user_struct(target_ts, target_addr, 0); 5037 return 0; 5038 } 5039 5040 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 5041 struct timespec *host_ts) 5042 { 5043 struct target_timespec *target_ts; 5044 5045 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) 5046 return -TARGET_EFAULT; 5047 target_ts->tv_sec = tswapal(host_ts->tv_sec); 5048 target_ts->tv_nsec = tswapal(host_ts->tv_nsec); 5049 unlock_user_struct(target_ts, target_addr, 1); 5050 return 0; 5051 } 5052 5053 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec, 5054 abi_ulong target_addr) 5055 { 5056 struct target_itimerspec *target_itspec; 5057 5058 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) { 5059 return -TARGET_EFAULT; 5060 } 5061 5062 host_itspec->it_interval.tv_sec = 5063 tswapal(target_itspec->it_interval.tv_sec); 5064 host_itspec->it_interval.tv_nsec = 5065 tswapal(target_itspec->it_interval.tv_nsec); 5066 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec); 5067 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec); 5068 5069 unlock_user_struct(target_itspec, target_addr, 1); 5070 return 0; 5071 } 5072 5073 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 5074 struct itimerspec *host_its) 5075 { 5076 struct target_itimerspec *target_itspec; 5077 5078 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) { 5079 return -TARGET_EFAULT; 5080 } 5081 5082 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec); 5083 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec); 5084 5085 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec); 5086 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec); 5087 5088 unlock_user_struct(target_itspec, target_addr, 0); 5089 return 0; 5090 } 5091 5092 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 5093 abi_ulong target_addr) 5094 { 5095 struct target_sigevent *target_sevp; 5096 5097 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 5098 return -TARGET_EFAULT; 5099 } 5100 5101 /* This union is awkward on 64 bit systems because it has a 32 bit 5102 * integer and a pointer in it; we follow the conversion approach 5103 * used for handling sigval types in signal.c so the guest should get 5104 * the correct value back even if we did a 64 bit byteswap and it's 5105 * using the 32 bit integer. 5106 */ 5107 host_sevp->sigev_value.sival_ptr = 5108 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 5109 host_sevp->sigev_signo = 5110 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 5111 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 5112 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid); 5113 5114 unlock_user_struct(target_sevp, target_addr, 1); 5115 return 0; 5116 } 5117 5118 #if defined(TARGET_NR_mlockall) 5119 static inline int target_to_host_mlockall_arg(int arg) 5120 { 5121 int result = 0; 5122 5123 if (arg & TARGET_MLOCKALL_MCL_CURRENT) { 5124 result |= MCL_CURRENT; 5125 } 5126 if (arg & TARGET_MLOCKALL_MCL_FUTURE) { 5127 result |= MCL_FUTURE; 5128 } 5129 return result; 5130 } 5131 #endif 5132 5133 #if defined(TARGET_NR_stat64) || defined(TARGET_NR_newfstatat) 5134 static inline abi_long host_to_target_stat64(void *cpu_env, 5135 abi_ulong target_addr, 5136 struct stat *host_st) 5137 { 5138 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 5139 if (((CPUARMState *)cpu_env)->eabi) { 5140 struct target_eabi_stat64 *target_st; 5141 5142 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 5143 return -TARGET_EFAULT; 5144 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 5145 __put_user(host_st->st_dev, &target_st->st_dev); 5146 __put_user(host_st->st_ino, &target_st->st_ino); 5147 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 5148 __put_user(host_st->st_ino, &target_st->__st_ino); 5149 #endif 5150 __put_user(host_st->st_mode, &target_st->st_mode); 5151 __put_user(host_st->st_nlink, &target_st->st_nlink); 5152 __put_user(host_st->st_uid, &target_st->st_uid); 5153 __put_user(host_st->st_gid, &target_st->st_gid); 5154 __put_user(host_st->st_rdev, &target_st->st_rdev); 5155 __put_user(host_st->st_size, &target_st->st_size); 5156 __put_user(host_st->st_blksize, &target_st->st_blksize); 5157 __put_user(host_st->st_blocks, &target_st->st_blocks); 5158 __put_user(host_st->st_atime, &target_st->target_st_atime); 5159 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 5160 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 5161 unlock_user_struct(target_st, target_addr, 1); 5162 } else 5163 #endif 5164 { 5165 #if defined(TARGET_HAS_STRUCT_STAT64) 5166 struct target_stat64 *target_st; 5167 #else 5168 struct target_stat *target_st; 5169 #endif 5170 5171 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 5172 return -TARGET_EFAULT; 5173 memset(target_st, 0, sizeof(*target_st)); 5174 __put_user(host_st->st_dev, &target_st->st_dev); 5175 __put_user(host_st->st_ino, &target_st->st_ino); 5176 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 5177 __put_user(host_st->st_ino, &target_st->__st_ino); 5178 #endif 5179 __put_user(host_st->st_mode, &target_st->st_mode); 5180 __put_user(host_st->st_nlink, &target_st->st_nlink); 5181 __put_user(host_st->st_uid, &target_st->st_uid); 5182 __put_user(host_st->st_gid, &target_st->st_gid); 5183 __put_user(host_st->st_rdev, &target_st->st_rdev); 5184 /* XXX: better use of kernel struct */ 5185 __put_user(host_st->st_size, &target_st->st_size); 5186 __put_user(host_st->st_blksize, &target_st->st_blksize); 5187 __put_user(host_st->st_blocks, &target_st->st_blocks); 5188 __put_user(host_st->st_atime, &target_st->target_st_atime); 5189 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 5190 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 5191 unlock_user_struct(target_st, target_addr, 1); 5192 } 5193 5194 return 0; 5195 } 5196 #endif 5197 5198 /* ??? Using host futex calls even when target atomic operations 5199 are not really atomic probably breaks things. However implementing 5200 futexes locally would make futexes shared between multiple processes 5201 tricky. However they're probably useless because guest atomic 5202 operations won't work either. */ 5203 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout, 5204 target_ulong uaddr2, int val3) 5205 { 5206 struct timespec ts, *pts; 5207 int base_op; 5208 5209 /* ??? We assume FUTEX_* constants are the same on both host 5210 and target. */ 5211 #ifdef FUTEX_CMD_MASK 5212 base_op = op & FUTEX_CMD_MASK; 5213 #else 5214 base_op = op; 5215 #endif 5216 switch (base_op) { 5217 case FUTEX_WAIT: 5218 case FUTEX_WAIT_BITSET: 5219 if (timeout) { 5220 pts = &ts; 5221 target_to_host_timespec(pts, timeout); 5222 } else { 5223 pts = NULL; 5224 } 5225 return get_errno(sys_futex(g2h(uaddr), op, tswap32(val), 5226 pts, NULL, val3)); 5227 case FUTEX_WAKE: 5228 return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0)); 5229 case FUTEX_FD: 5230 return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0)); 5231 case FUTEX_REQUEUE: 5232 case FUTEX_CMP_REQUEUE: 5233 case FUTEX_WAKE_OP: 5234 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 5235 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 5236 But the prototype takes a `struct timespec *'; insert casts 5237 to satisfy the compiler. We do not need to tswap TIMEOUT 5238 since it's not compared to guest memory. */ 5239 pts = (struct timespec *)(uintptr_t) timeout; 5240 return get_errno(sys_futex(g2h(uaddr), op, val, pts, 5241 g2h(uaddr2), 5242 (base_op == FUTEX_CMP_REQUEUE 5243 ? tswap32(val3) 5244 : val3))); 5245 default: 5246 return -TARGET_ENOSYS; 5247 } 5248 } 5249 5250 /* Map host to target signal numbers for the wait family of syscalls. 5251 Assume all other status bits are the same. */ 5252 int host_to_target_waitstatus(int status) 5253 { 5254 if (WIFSIGNALED(status)) { 5255 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 5256 } 5257 if (WIFSTOPPED(status)) { 5258 return (host_to_target_signal(WSTOPSIG(status)) << 8) 5259 | (status & 0xff); 5260 } 5261 return status; 5262 } 5263 5264 static int open_self_cmdline(void *cpu_env, int fd) 5265 { 5266 int fd_orig = -1; 5267 bool word_skipped = false; 5268 5269 fd_orig = open("/proc/self/cmdline", O_RDONLY); 5270 if (fd_orig < 0) { 5271 return fd_orig; 5272 } 5273 5274 while (true) { 5275 ssize_t nb_read; 5276 char buf[128]; 5277 char *cp_buf = buf; 5278 5279 nb_read = read(fd_orig, buf, sizeof(buf)); 5280 if (nb_read < 0) { 5281 fd_orig = close(fd_orig); 5282 return -1; 5283 } else if (nb_read == 0) { 5284 break; 5285 } 5286 5287 if (!word_skipped) { 5288 /* Skip the first string, which is the path to qemu-*-static 5289 instead of the actual command. */ 5290 cp_buf = memchr(buf, 0, sizeof(buf)); 5291 if (cp_buf) { 5292 /* Null byte found, skip one string */ 5293 cp_buf++; 5294 nb_read -= cp_buf - buf; 5295 word_skipped = true; 5296 } 5297 } 5298 5299 if (word_skipped) { 5300 if (write(fd, cp_buf, nb_read) != nb_read) { 5301 close(fd_orig); 5302 return -1; 5303 } 5304 } 5305 } 5306 5307 return close(fd_orig); 5308 } 5309 5310 static int open_self_maps(void *cpu_env, int fd) 5311 { 5312 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 5313 TaskState *ts = cpu->opaque; 5314 FILE *fp; 5315 char *line = NULL; 5316 size_t len = 0; 5317 ssize_t read; 5318 5319 fp = fopen("/proc/self/maps", "r"); 5320 if (fp == NULL) { 5321 return -EACCES; 5322 } 5323 5324 while ((read = getline(&line, &len, fp)) != -1) { 5325 int fields, dev_maj, dev_min, inode; 5326 uint64_t min, max, offset; 5327 char flag_r, flag_w, flag_x, flag_p; 5328 char path[512] = ""; 5329 fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d" 5330 " %512s", &min, &max, &flag_r, &flag_w, &flag_x, 5331 &flag_p, &offset, &dev_maj, &dev_min, &inode, path); 5332 5333 if ((fields < 10) || (fields > 11)) { 5334 continue; 5335 } 5336 if (h2g_valid(min)) { 5337 int flags = page_get_flags(h2g(min)); 5338 max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX); 5339 if (page_check_range(h2g(min), max - min, flags) == -1) { 5340 continue; 5341 } 5342 if (h2g(min) == ts->info->stack_limit) { 5343 pstrcpy(path, sizeof(path), " [stack]"); 5344 } 5345 dprintf(fd, TARGET_ABI_FMT_lx "-" TARGET_ABI_FMT_lx 5346 " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n", 5347 h2g(min), h2g(max - 1) + 1, flag_r, flag_w, 5348 flag_x, flag_p, offset, dev_maj, dev_min, inode, 5349 path[0] ? " " : "", path); 5350 } 5351 } 5352 5353 free(line); 5354 fclose(fp); 5355 5356 return 0; 5357 } 5358 5359 static int open_self_stat(void *cpu_env, int fd) 5360 { 5361 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 5362 TaskState *ts = cpu->opaque; 5363 abi_ulong start_stack = ts->info->start_stack; 5364 int i; 5365 5366 for (i = 0; i < 44; i++) { 5367 char buf[128]; 5368 int len; 5369 uint64_t val = 0; 5370 5371 if (i == 0) { 5372 /* pid */ 5373 val = getpid(); 5374 snprintf(buf, sizeof(buf), "%"PRId64 " ", val); 5375 } else if (i == 1) { 5376 /* app name */ 5377 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]); 5378 } else if (i == 27) { 5379 /* stack bottom */ 5380 val = start_stack; 5381 snprintf(buf, sizeof(buf), "%"PRId64 " ", val); 5382 } else { 5383 /* for the rest, there is MasterCard */ 5384 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' '); 5385 } 5386 5387 len = strlen(buf); 5388 if (write(fd, buf, len) != len) { 5389 return -1; 5390 } 5391 } 5392 5393 return 0; 5394 } 5395 5396 static int open_self_auxv(void *cpu_env, int fd) 5397 { 5398 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 5399 TaskState *ts = cpu->opaque; 5400 abi_ulong auxv = ts->info->saved_auxv; 5401 abi_ulong len = ts->info->auxv_len; 5402 char *ptr; 5403 5404 /* 5405 * Auxiliary vector is stored in target process stack. 5406 * read in whole auxv vector and copy it to file 5407 */ 5408 ptr = lock_user(VERIFY_READ, auxv, len, 0); 5409 if (ptr != NULL) { 5410 while (len > 0) { 5411 ssize_t r; 5412 r = write(fd, ptr, len); 5413 if (r <= 0) { 5414 break; 5415 } 5416 len -= r; 5417 ptr += r; 5418 } 5419 lseek(fd, 0, SEEK_SET); 5420 unlock_user(ptr, auxv, len); 5421 } 5422 5423 return 0; 5424 } 5425 5426 static int is_proc_myself(const char *filename, const char *entry) 5427 { 5428 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 5429 filename += strlen("/proc/"); 5430 if (!strncmp(filename, "self/", strlen("self/"))) { 5431 filename += strlen("self/"); 5432 } else if (*filename >= '1' && *filename <= '9') { 5433 char myself[80]; 5434 snprintf(myself, sizeof(myself), "%d/", getpid()); 5435 if (!strncmp(filename, myself, strlen(myself))) { 5436 filename += strlen(myself); 5437 } else { 5438 return 0; 5439 } 5440 } else { 5441 return 0; 5442 } 5443 if (!strcmp(filename, entry)) { 5444 return 1; 5445 } 5446 } 5447 return 0; 5448 } 5449 5450 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 5451 static int is_proc(const char *filename, const char *entry) 5452 { 5453 return strcmp(filename, entry) == 0; 5454 } 5455 5456 static int open_net_route(void *cpu_env, int fd) 5457 { 5458 FILE *fp; 5459 char *line = NULL; 5460 size_t len = 0; 5461 ssize_t read; 5462 5463 fp = fopen("/proc/net/route", "r"); 5464 if (fp == NULL) { 5465 return -EACCES; 5466 } 5467 5468 /* read header */ 5469 5470 read = getline(&line, &len, fp); 5471 dprintf(fd, "%s", line); 5472 5473 /* read routes */ 5474 5475 while ((read = getline(&line, &len, fp)) != -1) { 5476 char iface[16]; 5477 uint32_t dest, gw, mask; 5478 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 5479 sscanf(line, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 5480 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 5481 &mask, &mtu, &window, &irtt); 5482 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 5483 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 5484 metric, tswap32(mask), mtu, window, irtt); 5485 } 5486 5487 free(line); 5488 fclose(fp); 5489 5490 return 0; 5491 } 5492 #endif 5493 5494 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 5495 { 5496 struct fake_open { 5497 const char *filename; 5498 int (*fill)(void *cpu_env, int fd); 5499 int (*cmp)(const char *s1, const char *s2); 5500 }; 5501 const struct fake_open *fake_open; 5502 static const struct fake_open fakes[] = { 5503 { "maps", open_self_maps, is_proc_myself }, 5504 { "stat", open_self_stat, is_proc_myself }, 5505 { "auxv", open_self_auxv, is_proc_myself }, 5506 { "cmdline", open_self_cmdline, is_proc_myself }, 5507 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 5508 { "/proc/net/route", open_net_route, is_proc }, 5509 #endif 5510 { NULL, NULL, NULL } 5511 }; 5512 5513 if (is_proc_myself(pathname, "exe")) { 5514 int execfd = qemu_getauxval(AT_EXECFD); 5515 return execfd ? execfd : get_errno(sys_openat(dirfd, exec_path, flags, mode)); 5516 } 5517 5518 for (fake_open = fakes; fake_open->filename; fake_open++) { 5519 if (fake_open->cmp(pathname, fake_open->filename)) { 5520 break; 5521 } 5522 } 5523 5524 if (fake_open->filename) { 5525 const char *tmpdir; 5526 char filename[PATH_MAX]; 5527 int fd, r; 5528 5529 /* create temporary file to map stat to */ 5530 tmpdir = getenv("TMPDIR"); 5531 if (!tmpdir) 5532 tmpdir = "/tmp"; 5533 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 5534 fd = mkstemp(filename); 5535 if (fd < 0) { 5536 return fd; 5537 } 5538 unlink(filename); 5539 5540 if ((r = fake_open->fill(cpu_env, fd))) { 5541 close(fd); 5542 return r; 5543 } 5544 lseek(fd, 0, SEEK_SET); 5545 5546 return fd; 5547 } 5548 5549 return get_errno(sys_openat(dirfd, path(pathname), flags, mode)); 5550 } 5551 5552 #define TIMER_MAGIC 0x0caf0000 5553 #define TIMER_MAGIC_MASK 0xffff0000 5554 5555 /* Convert QEMU provided timer ID back to internal 16bit index format */ 5556 static target_timer_t get_timer_id(abi_long arg) 5557 { 5558 target_timer_t timerid = arg; 5559 5560 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 5561 return -TARGET_EINVAL; 5562 } 5563 5564 timerid &= 0xffff; 5565 5566 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 5567 return -TARGET_EINVAL; 5568 } 5569 5570 return timerid; 5571 } 5572 5573 /* do_syscall() should always have a single exit point at the end so 5574 that actions, such as logging of syscall results, can be performed. 5575 All errnos that do_syscall() returns must be -TARGET_<errcode>. */ 5576 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 5577 abi_long arg2, abi_long arg3, abi_long arg4, 5578 abi_long arg5, abi_long arg6, abi_long arg7, 5579 abi_long arg8) 5580 { 5581 CPUState *cpu = ENV_GET_CPU(cpu_env); 5582 abi_long ret; 5583 struct stat st; 5584 struct statfs stfs; 5585 void *p; 5586 5587 #ifdef DEBUG 5588 gemu_log("syscall %d", num); 5589 #endif 5590 if(do_strace) 5591 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); 5592 5593 switch(num) { 5594 case TARGET_NR_exit: 5595 /* In old applications this may be used to implement _exit(2). 5596 However in threaded applictions it is used for thread termination, 5597 and _exit_group is used for application termination. 5598 Do thread termination if we have more then one thread. */ 5599 /* FIXME: This probably breaks if a signal arrives. We should probably 5600 be disabling signals. */ 5601 if (CPU_NEXT(first_cpu)) { 5602 TaskState *ts; 5603 5604 cpu_list_lock(); 5605 /* Remove the CPU from the list. */ 5606 QTAILQ_REMOVE(&cpus, cpu, node); 5607 cpu_list_unlock(); 5608 ts = cpu->opaque; 5609 if (ts->child_tidptr) { 5610 put_user_u32(0, ts->child_tidptr); 5611 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX, 5612 NULL, NULL, 0); 5613 } 5614 thread_cpu = NULL; 5615 object_unref(OBJECT(cpu)); 5616 g_free(ts); 5617 rcu_unregister_thread(); 5618 pthread_exit(NULL); 5619 } 5620 #ifdef TARGET_GPROF 5621 _mcleanup(); 5622 #endif 5623 gdb_exit(cpu_env, arg1); 5624 _exit(arg1); 5625 ret = 0; /* avoid warning */ 5626 break; 5627 case TARGET_NR_read: 5628 if (arg3 == 0) 5629 ret = 0; 5630 else { 5631 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 5632 goto efault; 5633 ret = get_errno(read(arg1, p, arg3)); 5634 unlock_user(p, arg2, ret); 5635 } 5636 break; 5637 case TARGET_NR_write: 5638 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 5639 goto efault; 5640 ret = get_errno(write(arg1, p, arg3)); 5641 unlock_user(p, arg2, 0); 5642 break; 5643 #ifdef TARGET_NR_open 5644 case TARGET_NR_open: 5645 if (!(p = lock_user_string(arg1))) 5646 goto efault; 5647 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 5648 target_to_host_bitmask(arg2, fcntl_flags_tbl), 5649 arg3)); 5650 unlock_user(p, arg1, 0); 5651 break; 5652 #endif 5653 case TARGET_NR_openat: 5654 if (!(p = lock_user_string(arg2))) 5655 goto efault; 5656 ret = get_errno(do_openat(cpu_env, arg1, p, 5657 target_to_host_bitmask(arg3, fcntl_flags_tbl), 5658 arg4)); 5659 unlock_user(p, arg2, 0); 5660 break; 5661 case TARGET_NR_close: 5662 ret = get_errno(close(arg1)); 5663 break; 5664 case TARGET_NR_brk: 5665 ret = do_brk(arg1); 5666 break; 5667 #ifdef TARGET_NR_fork 5668 case TARGET_NR_fork: 5669 ret = get_errno(do_fork(cpu_env, SIGCHLD, 0, 0, 0, 0)); 5670 break; 5671 #endif 5672 #ifdef TARGET_NR_waitpid 5673 case TARGET_NR_waitpid: 5674 { 5675 int status; 5676 ret = get_errno(waitpid(arg1, &status, arg3)); 5677 if (!is_error(ret) && arg2 && ret 5678 && put_user_s32(host_to_target_waitstatus(status), arg2)) 5679 goto efault; 5680 } 5681 break; 5682 #endif 5683 #ifdef TARGET_NR_waitid 5684 case TARGET_NR_waitid: 5685 { 5686 siginfo_t info; 5687 info.si_pid = 0; 5688 ret = get_errno(waitid(arg1, arg2, &info, arg4)); 5689 if (!is_error(ret) && arg3 && info.si_pid != 0) { 5690 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 5691 goto efault; 5692 host_to_target_siginfo(p, &info); 5693 unlock_user(p, arg3, sizeof(target_siginfo_t)); 5694 } 5695 } 5696 break; 5697 #endif 5698 #ifdef TARGET_NR_creat /* not on alpha */ 5699 case TARGET_NR_creat: 5700 if (!(p = lock_user_string(arg1))) 5701 goto efault; 5702 ret = get_errno(creat(p, arg2)); 5703 unlock_user(p, arg1, 0); 5704 break; 5705 #endif 5706 #ifdef TARGET_NR_link 5707 case TARGET_NR_link: 5708 { 5709 void * p2; 5710 p = lock_user_string(arg1); 5711 p2 = lock_user_string(arg2); 5712 if (!p || !p2) 5713 ret = -TARGET_EFAULT; 5714 else 5715 ret = get_errno(link(p, p2)); 5716 unlock_user(p2, arg2, 0); 5717 unlock_user(p, arg1, 0); 5718 } 5719 break; 5720 #endif 5721 #if defined(TARGET_NR_linkat) 5722 case TARGET_NR_linkat: 5723 { 5724 void * p2 = NULL; 5725 if (!arg2 || !arg4) 5726 goto efault; 5727 p = lock_user_string(arg2); 5728 p2 = lock_user_string(arg4); 5729 if (!p || !p2) 5730 ret = -TARGET_EFAULT; 5731 else 5732 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 5733 unlock_user(p, arg2, 0); 5734 unlock_user(p2, arg4, 0); 5735 } 5736 break; 5737 #endif 5738 #ifdef TARGET_NR_unlink 5739 case TARGET_NR_unlink: 5740 if (!(p = lock_user_string(arg1))) 5741 goto efault; 5742 ret = get_errno(unlink(p)); 5743 unlock_user(p, arg1, 0); 5744 break; 5745 #endif 5746 #if defined(TARGET_NR_unlinkat) 5747 case TARGET_NR_unlinkat: 5748 if (!(p = lock_user_string(arg2))) 5749 goto efault; 5750 ret = get_errno(unlinkat(arg1, p, arg3)); 5751 unlock_user(p, arg2, 0); 5752 break; 5753 #endif 5754 case TARGET_NR_execve: 5755 { 5756 char **argp, **envp; 5757 int argc, envc; 5758 abi_ulong gp; 5759 abi_ulong guest_argp; 5760 abi_ulong guest_envp; 5761 abi_ulong addr; 5762 char **q; 5763 int total_size = 0; 5764 5765 argc = 0; 5766 guest_argp = arg2; 5767 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 5768 if (get_user_ual(addr, gp)) 5769 goto efault; 5770 if (!addr) 5771 break; 5772 argc++; 5773 } 5774 envc = 0; 5775 guest_envp = arg3; 5776 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 5777 if (get_user_ual(addr, gp)) 5778 goto efault; 5779 if (!addr) 5780 break; 5781 envc++; 5782 } 5783 5784 argp = alloca((argc + 1) * sizeof(void *)); 5785 envp = alloca((envc + 1) * sizeof(void *)); 5786 5787 for (gp = guest_argp, q = argp; gp; 5788 gp += sizeof(abi_ulong), q++) { 5789 if (get_user_ual(addr, gp)) 5790 goto execve_efault; 5791 if (!addr) 5792 break; 5793 if (!(*q = lock_user_string(addr))) 5794 goto execve_efault; 5795 total_size += strlen(*q) + 1; 5796 } 5797 *q = NULL; 5798 5799 for (gp = guest_envp, q = envp; gp; 5800 gp += sizeof(abi_ulong), q++) { 5801 if (get_user_ual(addr, gp)) 5802 goto execve_efault; 5803 if (!addr) 5804 break; 5805 if (!(*q = lock_user_string(addr))) 5806 goto execve_efault; 5807 total_size += strlen(*q) + 1; 5808 } 5809 *q = NULL; 5810 5811 /* This case will not be caught by the host's execve() if its 5812 page size is bigger than the target's. */ 5813 if (total_size > MAX_ARG_PAGES * TARGET_PAGE_SIZE) { 5814 ret = -TARGET_E2BIG; 5815 goto execve_end; 5816 } 5817 if (!(p = lock_user_string(arg1))) 5818 goto execve_efault; 5819 ret = get_errno(execve(p, argp, envp)); 5820 unlock_user(p, arg1, 0); 5821 5822 goto execve_end; 5823 5824 execve_efault: 5825 ret = -TARGET_EFAULT; 5826 5827 execve_end: 5828 for (gp = guest_argp, q = argp; *q; 5829 gp += sizeof(abi_ulong), q++) { 5830 if (get_user_ual(addr, gp) 5831 || !addr) 5832 break; 5833 unlock_user(*q, addr, 0); 5834 } 5835 for (gp = guest_envp, q = envp; *q; 5836 gp += sizeof(abi_ulong), q++) { 5837 if (get_user_ual(addr, gp) 5838 || !addr) 5839 break; 5840 unlock_user(*q, addr, 0); 5841 } 5842 } 5843 break; 5844 case TARGET_NR_chdir: 5845 if (!(p = lock_user_string(arg1))) 5846 goto efault; 5847 ret = get_errno(chdir(p)); 5848 unlock_user(p, arg1, 0); 5849 break; 5850 #ifdef TARGET_NR_time 5851 case TARGET_NR_time: 5852 { 5853 time_t host_time; 5854 ret = get_errno(time(&host_time)); 5855 if (!is_error(ret) 5856 && arg1 5857 && put_user_sal(host_time, arg1)) 5858 goto efault; 5859 } 5860 break; 5861 #endif 5862 #ifdef TARGET_NR_mknod 5863 case TARGET_NR_mknod: 5864 if (!(p = lock_user_string(arg1))) 5865 goto efault; 5866 ret = get_errno(mknod(p, arg2, arg3)); 5867 unlock_user(p, arg1, 0); 5868 break; 5869 #endif 5870 #if defined(TARGET_NR_mknodat) 5871 case TARGET_NR_mknodat: 5872 if (!(p = lock_user_string(arg2))) 5873 goto efault; 5874 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 5875 unlock_user(p, arg2, 0); 5876 break; 5877 #endif 5878 #ifdef TARGET_NR_chmod 5879 case TARGET_NR_chmod: 5880 if (!(p = lock_user_string(arg1))) 5881 goto efault; 5882 ret = get_errno(chmod(p, arg2)); 5883 unlock_user(p, arg1, 0); 5884 break; 5885 #endif 5886 #ifdef TARGET_NR_break 5887 case TARGET_NR_break: 5888 goto unimplemented; 5889 #endif 5890 #ifdef TARGET_NR_oldstat 5891 case TARGET_NR_oldstat: 5892 goto unimplemented; 5893 #endif 5894 case TARGET_NR_lseek: 5895 ret = get_errno(lseek(arg1, arg2, arg3)); 5896 break; 5897 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 5898 /* Alpha specific */ 5899 case TARGET_NR_getxpid: 5900 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); 5901 ret = get_errno(getpid()); 5902 break; 5903 #endif 5904 #ifdef TARGET_NR_getpid 5905 case TARGET_NR_getpid: 5906 ret = get_errno(getpid()); 5907 break; 5908 #endif 5909 case TARGET_NR_mount: 5910 { 5911 /* need to look at the data field */ 5912 void *p2, *p3; 5913 5914 if (arg1) { 5915 p = lock_user_string(arg1); 5916 if (!p) { 5917 goto efault; 5918 } 5919 } else { 5920 p = NULL; 5921 } 5922 5923 p2 = lock_user_string(arg2); 5924 if (!p2) { 5925 if (arg1) { 5926 unlock_user(p, arg1, 0); 5927 } 5928 goto efault; 5929 } 5930 5931 if (arg3) { 5932 p3 = lock_user_string(arg3); 5933 if (!p3) { 5934 if (arg1) { 5935 unlock_user(p, arg1, 0); 5936 } 5937 unlock_user(p2, arg2, 0); 5938 goto efault; 5939 } 5940 } else { 5941 p3 = NULL; 5942 } 5943 5944 /* FIXME - arg5 should be locked, but it isn't clear how to 5945 * do that since it's not guaranteed to be a NULL-terminated 5946 * string. 5947 */ 5948 if (!arg5) { 5949 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 5950 } else { 5951 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5)); 5952 } 5953 ret = get_errno(ret); 5954 5955 if (arg1) { 5956 unlock_user(p, arg1, 0); 5957 } 5958 unlock_user(p2, arg2, 0); 5959 if (arg3) { 5960 unlock_user(p3, arg3, 0); 5961 } 5962 } 5963 break; 5964 #ifdef TARGET_NR_umount 5965 case TARGET_NR_umount: 5966 if (!(p = lock_user_string(arg1))) 5967 goto efault; 5968 ret = get_errno(umount(p)); 5969 unlock_user(p, arg1, 0); 5970 break; 5971 #endif 5972 #ifdef TARGET_NR_stime /* not on alpha */ 5973 case TARGET_NR_stime: 5974 { 5975 time_t host_time; 5976 if (get_user_sal(host_time, arg1)) 5977 goto efault; 5978 ret = get_errno(stime(&host_time)); 5979 } 5980 break; 5981 #endif 5982 case TARGET_NR_ptrace: 5983 goto unimplemented; 5984 #ifdef TARGET_NR_alarm /* not on alpha */ 5985 case TARGET_NR_alarm: 5986 ret = alarm(arg1); 5987 break; 5988 #endif 5989 #ifdef TARGET_NR_oldfstat 5990 case TARGET_NR_oldfstat: 5991 goto unimplemented; 5992 #endif 5993 #ifdef TARGET_NR_pause /* not on alpha */ 5994 case TARGET_NR_pause: 5995 ret = get_errno(pause()); 5996 break; 5997 #endif 5998 #ifdef TARGET_NR_utime 5999 case TARGET_NR_utime: 6000 { 6001 struct utimbuf tbuf, *host_tbuf; 6002 struct target_utimbuf *target_tbuf; 6003 if (arg2) { 6004 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 6005 goto efault; 6006 tbuf.actime = tswapal(target_tbuf->actime); 6007 tbuf.modtime = tswapal(target_tbuf->modtime); 6008 unlock_user_struct(target_tbuf, arg2, 0); 6009 host_tbuf = &tbuf; 6010 } else { 6011 host_tbuf = NULL; 6012 } 6013 if (!(p = lock_user_string(arg1))) 6014 goto efault; 6015 ret = get_errno(utime(p, host_tbuf)); 6016 unlock_user(p, arg1, 0); 6017 } 6018 break; 6019 #endif 6020 #ifdef TARGET_NR_utimes 6021 case TARGET_NR_utimes: 6022 { 6023 struct timeval *tvp, tv[2]; 6024 if (arg2) { 6025 if (copy_from_user_timeval(&tv[0], arg2) 6026 || copy_from_user_timeval(&tv[1], 6027 arg2 + sizeof(struct target_timeval))) 6028 goto efault; 6029 tvp = tv; 6030 } else { 6031 tvp = NULL; 6032 } 6033 if (!(p = lock_user_string(arg1))) 6034 goto efault; 6035 ret = get_errno(utimes(p, tvp)); 6036 unlock_user(p, arg1, 0); 6037 } 6038 break; 6039 #endif 6040 #if defined(TARGET_NR_futimesat) 6041 case TARGET_NR_futimesat: 6042 { 6043 struct timeval *tvp, tv[2]; 6044 if (arg3) { 6045 if (copy_from_user_timeval(&tv[0], arg3) 6046 || copy_from_user_timeval(&tv[1], 6047 arg3 + sizeof(struct target_timeval))) 6048 goto efault; 6049 tvp = tv; 6050 } else { 6051 tvp = NULL; 6052 } 6053 if (!(p = lock_user_string(arg2))) 6054 goto efault; 6055 ret = get_errno(futimesat(arg1, path(p), tvp)); 6056 unlock_user(p, arg2, 0); 6057 } 6058 break; 6059 #endif 6060 #ifdef TARGET_NR_stty 6061 case TARGET_NR_stty: 6062 goto unimplemented; 6063 #endif 6064 #ifdef TARGET_NR_gtty 6065 case TARGET_NR_gtty: 6066 goto unimplemented; 6067 #endif 6068 #ifdef TARGET_NR_access 6069 case TARGET_NR_access: 6070 if (!(p = lock_user_string(arg1))) 6071 goto efault; 6072 ret = get_errno(access(path(p), arg2)); 6073 unlock_user(p, arg1, 0); 6074 break; 6075 #endif 6076 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 6077 case TARGET_NR_faccessat: 6078 if (!(p = lock_user_string(arg2))) 6079 goto efault; 6080 ret = get_errno(faccessat(arg1, p, arg3, 0)); 6081 unlock_user(p, arg2, 0); 6082 break; 6083 #endif 6084 #ifdef TARGET_NR_nice /* not on alpha */ 6085 case TARGET_NR_nice: 6086 ret = get_errno(nice(arg1)); 6087 break; 6088 #endif 6089 #ifdef TARGET_NR_ftime 6090 case TARGET_NR_ftime: 6091 goto unimplemented; 6092 #endif 6093 case TARGET_NR_sync: 6094 sync(); 6095 ret = 0; 6096 break; 6097 case TARGET_NR_kill: 6098 ret = get_errno(kill(arg1, target_to_host_signal(arg2))); 6099 break; 6100 #ifdef TARGET_NR_rename 6101 case TARGET_NR_rename: 6102 { 6103 void *p2; 6104 p = lock_user_string(arg1); 6105 p2 = lock_user_string(arg2); 6106 if (!p || !p2) 6107 ret = -TARGET_EFAULT; 6108 else 6109 ret = get_errno(rename(p, p2)); 6110 unlock_user(p2, arg2, 0); 6111 unlock_user(p, arg1, 0); 6112 } 6113 break; 6114 #endif 6115 #if defined(TARGET_NR_renameat) 6116 case TARGET_NR_renameat: 6117 { 6118 void *p2; 6119 p = lock_user_string(arg2); 6120 p2 = lock_user_string(arg4); 6121 if (!p || !p2) 6122 ret = -TARGET_EFAULT; 6123 else 6124 ret = get_errno(renameat(arg1, p, arg3, p2)); 6125 unlock_user(p2, arg4, 0); 6126 unlock_user(p, arg2, 0); 6127 } 6128 break; 6129 #endif 6130 #ifdef TARGET_NR_mkdir 6131 case TARGET_NR_mkdir: 6132 if (!(p = lock_user_string(arg1))) 6133 goto efault; 6134 ret = get_errno(mkdir(p, arg2)); 6135 unlock_user(p, arg1, 0); 6136 break; 6137 #endif 6138 #if defined(TARGET_NR_mkdirat) 6139 case TARGET_NR_mkdirat: 6140 if (!(p = lock_user_string(arg2))) 6141 goto efault; 6142 ret = get_errno(mkdirat(arg1, p, arg3)); 6143 unlock_user(p, arg2, 0); 6144 break; 6145 #endif 6146 #ifdef TARGET_NR_rmdir 6147 case TARGET_NR_rmdir: 6148 if (!(p = lock_user_string(arg1))) 6149 goto efault; 6150 ret = get_errno(rmdir(p)); 6151 unlock_user(p, arg1, 0); 6152 break; 6153 #endif 6154 case TARGET_NR_dup: 6155 ret = get_errno(dup(arg1)); 6156 break; 6157 #ifdef TARGET_NR_pipe 6158 case TARGET_NR_pipe: 6159 ret = do_pipe(cpu_env, arg1, 0, 0); 6160 break; 6161 #endif 6162 #ifdef TARGET_NR_pipe2 6163 case TARGET_NR_pipe2: 6164 ret = do_pipe(cpu_env, arg1, 6165 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 6166 break; 6167 #endif 6168 case TARGET_NR_times: 6169 { 6170 struct target_tms *tmsp; 6171 struct tms tms; 6172 ret = get_errno(times(&tms)); 6173 if (arg1) { 6174 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 6175 if (!tmsp) 6176 goto efault; 6177 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 6178 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 6179 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 6180 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 6181 } 6182 if (!is_error(ret)) 6183 ret = host_to_target_clock_t(ret); 6184 } 6185 break; 6186 #ifdef TARGET_NR_prof 6187 case TARGET_NR_prof: 6188 goto unimplemented; 6189 #endif 6190 #ifdef TARGET_NR_signal 6191 case TARGET_NR_signal: 6192 goto unimplemented; 6193 #endif 6194 case TARGET_NR_acct: 6195 if (arg1 == 0) { 6196 ret = get_errno(acct(NULL)); 6197 } else { 6198 if (!(p = lock_user_string(arg1))) 6199 goto efault; 6200 ret = get_errno(acct(path(p))); 6201 unlock_user(p, arg1, 0); 6202 } 6203 break; 6204 #ifdef TARGET_NR_umount2 6205 case TARGET_NR_umount2: 6206 if (!(p = lock_user_string(arg1))) 6207 goto efault; 6208 ret = get_errno(umount2(p, arg2)); 6209 unlock_user(p, arg1, 0); 6210 break; 6211 #endif 6212 #ifdef TARGET_NR_lock 6213 case TARGET_NR_lock: 6214 goto unimplemented; 6215 #endif 6216 case TARGET_NR_ioctl: 6217 ret = do_ioctl(arg1, arg2, arg3); 6218 break; 6219 case TARGET_NR_fcntl: 6220 ret = do_fcntl(arg1, arg2, arg3); 6221 break; 6222 #ifdef TARGET_NR_mpx 6223 case TARGET_NR_mpx: 6224 goto unimplemented; 6225 #endif 6226 case TARGET_NR_setpgid: 6227 ret = get_errno(setpgid(arg1, arg2)); 6228 break; 6229 #ifdef TARGET_NR_ulimit 6230 case TARGET_NR_ulimit: 6231 goto unimplemented; 6232 #endif 6233 #ifdef TARGET_NR_oldolduname 6234 case TARGET_NR_oldolduname: 6235 goto unimplemented; 6236 #endif 6237 case TARGET_NR_umask: 6238 ret = get_errno(umask(arg1)); 6239 break; 6240 case TARGET_NR_chroot: 6241 if (!(p = lock_user_string(arg1))) 6242 goto efault; 6243 ret = get_errno(chroot(p)); 6244 unlock_user(p, arg1, 0); 6245 break; 6246 #ifdef TARGET_NR_ustat 6247 case TARGET_NR_ustat: 6248 goto unimplemented; 6249 #endif 6250 #ifdef TARGET_NR_dup2 6251 case TARGET_NR_dup2: 6252 ret = get_errno(dup2(arg1, arg2)); 6253 break; 6254 #endif 6255 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 6256 case TARGET_NR_dup3: 6257 ret = get_errno(dup3(arg1, arg2, arg3)); 6258 break; 6259 #endif 6260 #ifdef TARGET_NR_getppid /* not on alpha */ 6261 case TARGET_NR_getppid: 6262 ret = get_errno(getppid()); 6263 break; 6264 #endif 6265 #ifdef TARGET_NR_getpgrp 6266 case TARGET_NR_getpgrp: 6267 ret = get_errno(getpgrp()); 6268 break; 6269 #endif 6270 case TARGET_NR_setsid: 6271 ret = get_errno(setsid()); 6272 break; 6273 #ifdef TARGET_NR_sigaction 6274 case TARGET_NR_sigaction: 6275 { 6276 #if defined(TARGET_ALPHA) 6277 struct target_sigaction act, oact, *pact = 0; 6278 struct target_old_sigaction *old_act; 6279 if (arg2) { 6280 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 6281 goto efault; 6282 act._sa_handler = old_act->_sa_handler; 6283 target_siginitset(&act.sa_mask, old_act->sa_mask); 6284 act.sa_flags = old_act->sa_flags; 6285 act.sa_restorer = 0; 6286 unlock_user_struct(old_act, arg2, 0); 6287 pact = &act; 6288 } 6289 ret = get_errno(do_sigaction(arg1, pact, &oact)); 6290 if (!is_error(ret) && arg3) { 6291 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 6292 goto efault; 6293 old_act->_sa_handler = oact._sa_handler; 6294 old_act->sa_mask = oact.sa_mask.sig[0]; 6295 old_act->sa_flags = oact.sa_flags; 6296 unlock_user_struct(old_act, arg3, 1); 6297 } 6298 #elif defined(TARGET_MIPS) 6299 struct target_sigaction act, oact, *pact, *old_act; 6300 6301 if (arg2) { 6302 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 6303 goto efault; 6304 act._sa_handler = old_act->_sa_handler; 6305 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 6306 act.sa_flags = old_act->sa_flags; 6307 unlock_user_struct(old_act, arg2, 0); 6308 pact = &act; 6309 } else { 6310 pact = NULL; 6311 } 6312 6313 ret = get_errno(do_sigaction(arg1, pact, &oact)); 6314 6315 if (!is_error(ret) && arg3) { 6316 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 6317 goto efault; 6318 old_act->_sa_handler = oact._sa_handler; 6319 old_act->sa_flags = oact.sa_flags; 6320 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 6321 old_act->sa_mask.sig[1] = 0; 6322 old_act->sa_mask.sig[2] = 0; 6323 old_act->sa_mask.sig[3] = 0; 6324 unlock_user_struct(old_act, arg3, 1); 6325 } 6326 #else 6327 struct target_old_sigaction *old_act; 6328 struct target_sigaction act, oact, *pact; 6329 if (arg2) { 6330 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 6331 goto efault; 6332 act._sa_handler = old_act->_sa_handler; 6333 target_siginitset(&act.sa_mask, old_act->sa_mask); 6334 act.sa_flags = old_act->sa_flags; 6335 act.sa_restorer = old_act->sa_restorer; 6336 unlock_user_struct(old_act, arg2, 0); 6337 pact = &act; 6338 } else { 6339 pact = NULL; 6340 } 6341 ret = get_errno(do_sigaction(arg1, pact, &oact)); 6342 if (!is_error(ret) && arg3) { 6343 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 6344 goto efault; 6345 old_act->_sa_handler = oact._sa_handler; 6346 old_act->sa_mask = oact.sa_mask.sig[0]; 6347 old_act->sa_flags = oact.sa_flags; 6348 old_act->sa_restorer = oact.sa_restorer; 6349 unlock_user_struct(old_act, arg3, 1); 6350 } 6351 #endif 6352 } 6353 break; 6354 #endif 6355 case TARGET_NR_rt_sigaction: 6356 { 6357 #if defined(TARGET_ALPHA) 6358 struct target_sigaction act, oact, *pact = 0; 6359 struct target_rt_sigaction *rt_act; 6360 /* ??? arg4 == sizeof(sigset_t). */ 6361 if (arg2) { 6362 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1)) 6363 goto efault; 6364 act._sa_handler = rt_act->_sa_handler; 6365 act.sa_mask = rt_act->sa_mask; 6366 act.sa_flags = rt_act->sa_flags; 6367 act.sa_restorer = arg5; 6368 unlock_user_struct(rt_act, arg2, 0); 6369 pact = &act; 6370 } 6371 ret = get_errno(do_sigaction(arg1, pact, &oact)); 6372 if (!is_error(ret) && arg3) { 6373 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0)) 6374 goto efault; 6375 rt_act->_sa_handler = oact._sa_handler; 6376 rt_act->sa_mask = oact.sa_mask; 6377 rt_act->sa_flags = oact.sa_flags; 6378 unlock_user_struct(rt_act, arg3, 1); 6379 } 6380 #else 6381 struct target_sigaction *act; 6382 struct target_sigaction *oact; 6383 6384 if (arg2) { 6385 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) 6386 goto efault; 6387 } else 6388 act = NULL; 6389 if (arg3) { 6390 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 6391 ret = -TARGET_EFAULT; 6392 goto rt_sigaction_fail; 6393 } 6394 } else 6395 oact = NULL; 6396 ret = get_errno(do_sigaction(arg1, act, oact)); 6397 rt_sigaction_fail: 6398 if (act) 6399 unlock_user_struct(act, arg2, 0); 6400 if (oact) 6401 unlock_user_struct(oact, arg3, 1); 6402 #endif 6403 } 6404 break; 6405 #ifdef TARGET_NR_sgetmask /* not on alpha */ 6406 case TARGET_NR_sgetmask: 6407 { 6408 sigset_t cur_set; 6409 abi_ulong target_set; 6410 do_sigprocmask(0, NULL, &cur_set); 6411 host_to_target_old_sigset(&target_set, &cur_set); 6412 ret = target_set; 6413 } 6414 break; 6415 #endif 6416 #ifdef TARGET_NR_ssetmask /* not on alpha */ 6417 case TARGET_NR_ssetmask: 6418 { 6419 sigset_t set, oset, cur_set; 6420 abi_ulong target_set = arg1; 6421 do_sigprocmask(0, NULL, &cur_set); 6422 target_to_host_old_sigset(&set, &target_set); 6423 sigorset(&set, &set, &cur_set); 6424 do_sigprocmask(SIG_SETMASK, &set, &oset); 6425 host_to_target_old_sigset(&target_set, &oset); 6426 ret = target_set; 6427 } 6428 break; 6429 #endif 6430 #ifdef TARGET_NR_sigprocmask 6431 case TARGET_NR_sigprocmask: 6432 { 6433 #if defined(TARGET_ALPHA) 6434 sigset_t set, oldset; 6435 abi_ulong mask; 6436 int how; 6437 6438 switch (arg1) { 6439 case TARGET_SIG_BLOCK: 6440 how = SIG_BLOCK; 6441 break; 6442 case TARGET_SIG_UNBLOCK: 6443 how = SIG_UNBLOCK; 6444 break; 6445 case TARGET_SIG_SETMASK: 6446 how = SIG_SETMASK; 6447 break; 6448 default: 6449 ret = -TARGET_EINVAL; 6450 goto fail; 6451 } 6452 mask = arg2; 6453 target_to_host_old_sigset(&set, &mask); 6454 6455 ret = get_errno(do_sigprocmask(how, &set, &oldset)); 6456 if (!is_error(ret)) { 6457 host_to_target_old_sigset(&mask, &oldset); 6458 ret = mask; 6459 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ 6460 } 6461 #else 6462 sigset_t set, oldset, *set_ptr; 6463 int how; 6464 6465 if (arg2) { 6466 switch (arg1) { 6467 case TARGET_SIG_BLOCK: 6468 how = SIG_BLOCK; 6469 break; 6470 case TARGET_SIG_UNBLOCK: 6471 how = SIG_UNBLOCK; 6472 break; 6473 case TARGET_SIG_SETMASK: 6474 how = SIG_SETMASK; 6475 break; 6476 default: 6477 ret = -TARGET_EINVAL; 6478 goto fail; 6479 } 6480 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 6481 goto efault; 6482 target_to_host_old_sigset(&set, p); 6483 unlock_user(p, arg2, 0); 6484 set_ptr = &set; 6485 } else { 6486 how = 0; 6487 set_ptr = NULL; 6488 } 6489 ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); 6490 if (!is_error(ret) && arg3) { 6491 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 6492 goto efault; 6493 host_to_target_old_sigset(p, &oldset); 6494 unlock_user(p, arg3, sizeof(target_sigset_t)); 6495 } 6496 #endif 6497 } 6498 break; 6499 #endif 6500 case TARGET_NR_rt_sigprocmask: 6501 { 6502 int how = arg1; 6503 sigset_t set, oldset, *set_ptr; 6504 6505 if (arg2) { 6506 switch(how) { 6507 case TARGET_SIG_BLOCK: 6508 how = SIG_BLOCK; 6509 break; 6510 case TARGET_SIG_UNBLOCK: 6511 how = SIG_UNBLOCK; 6512 break; 6513 case TARGET_SIG_SETMASK: 6514 how = SIG_SETMASK; 6515 break; 6516 default: 6517 ret = -TARGET_EINVAL; 6518 goto fail; 6519 } 6520 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 6521 goto efault; 6522 target_to_host_sigset(&set, p); 6523 unlock_user(p, arg2, 0); 6524 set_ptr = &set; 6525 } else { 6526 how = 0; 6527 set_ptr = NULL; 6528 } 6529 ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); 6530 if (!is_error(ret) && arg3) { 6531 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 6532 goto efault; 6533 host_to_target_sigset(p, &oldset); 6534 unlock_user(p, arg3, sizeof(target_sigset_t)); 6535 } 6536 } 6537 break; 6538 #ifdef TARGET_NR_sigpending 6539 case TARGET_NR_sigpending: 6540 { 6541 sigset_t set; 6542 ret = get_errno(sigpending(&set)); 6543 if (!is_error(ret)) { 6544 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 6545 goto efault; 6546 host_to_target_old_sigset(p, &set); 6547 unlock_user(p, arg1, sizeof(target_sigset_t)); 6548 } 6549 } 6550 break; 6551 #endif 6552 case TARGET_NR_rt_sigpending: 6553 { 6554 sigset_t set; 6555 ret = get_errno(sigpending(&set)); 6556 if (!is_error(ret)) { 6557 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 6558 goto efault; 6559 host_to_target_sigset(p, &set); 6560 unlock_user(p, arg1, sizeof(target_sigset_t)); 6561 } 6562 } 6563 break; 6564 #ifdef TARGET_NR_sigsuspend 6565 case TARGET_NR_sigsuspend: 6566 { 6567 sigset_t set; 6568 #if defined(TARGET_ALPHA) 6569 abi_ulong mask = arg1; 6570 target_to_host_old_sigset(&set, &mask); 6571 #else 6572 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 6573 goto efault; 6574 target_to_host_old_sigset(&set, p); 6575 unlock_user(p, arg1, 0); 6576 #endif 6577 ret = get_errno(sigsuspend(&set)); 6578 } 6579 break; 6580 #endif 6581 case TARGET_NR_rt_sigsuspend: 6582 { 6583 sigset_t set; 6584 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 6585 goto efault; 6586 target_to_host_sigset(&set, p); 6587 unlock_user(p, arg1, 0); 6588 ret = get_errno(sigsuspend(&set)); 6589 } 6590 break; 6591 case TARGET_NR_rt_sigtimedwait: 6592 { 6593 sigset_t set; 6594 struct timespec uts, *puts; 6595 siginfo_t uinfo; 6596 6597 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 6598 goto efault; 6599 target_to_host_sigset(&set, p); 6600 unlock_user(p, arg1, 0); 6601 if (arg3) { 6602 puts = &uts; 6603 target_to_host_timespec(puts, arg3); 6604 } else { 6605 puts = NULL; 6606 } 6607 ret = get_errno(sigtimedwait(&set, &uinfo, puts)); 6608 if (!is_error(ret)) { 6609 if (arg2) { 6610 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 6611 0); 6612 if (!p) { 6613 goto efault; 6614 } 6615 host_to_target_siginfo(p, &uinfo); 6616 unlock_user(p, arg2, sizeof(target_siginfo_t)); 6617 } 6618 ret = host_to_target_signal(ret); 6619 } 6620 } 6621 break; 6622 case TARGET_NR_rt_sigqueueinfo: 6623 { 6624 siginfo_t uinfo; 6625 if (!(p = lock_user(VERIFY_READ, arg3, sizeof(target_sigset_t), 1))) 6626 goto efault; 6627 target_to_host_siginfo(&uinfo, p); 6628 unlock_user(p, arg1, 0); 6629 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); 6630 } 6631 break; 6632 #ifdef TARGET_NR_sigreturn 6633 case TARGET_NR_sigreturn: 6634 /* NOTE: ret is eax, so not transcoding must be done */ 6635 ret = do_sigreturn(cpu_env); 6636 break; 6637 #endif 6638 case TARGET_NR_rt_sigreturn: 6639 /* NOTE: ret is eax, so not transcoding must be done */ 6640 ret = do_rt_sigreturn(cpu_env); 6641 break; 6642 case TARGET_NR_sethostname: 6643 if (!(p = lock_user_string(arg1))) 6644 goto efault; 6645 ret = get_errno(sethostname(p, arg2)); 6646 unlock_user(p, arg1, 0); 6647 break; 6648 case TARGET_NR_setrlimit: 6649 { 6650 int resource = target_to_host_resource(arg1); 6651 struct target_rlimit *target_rlim; 6652 struct rlimit rlim; 6653 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 6654 goto efault; 6655 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 6656 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 6657 unlock_user_struct(target_rlim, arg2, 0); 6658 ret = get_errno(setrlimit(resource, &rlim)); 6659 } 6660 break; 6661 case TARGET_NR_getrlimit: 6662 { 6663 int resource = target_to_host_resource(arg1); 6664 struct target_rlimit *target_rlim; 6665 struct rlimit rlim; 6666 6667 ret = get_errno(getrlimit(resource, &rlim)); 6668 if (!is_error(ret)) { 6669 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 6670 goto efault; 6671 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 6672 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 6673 unlock_user_struct(target_rlim, arg2, 1); 6674 } 6675 } 6676 break; 6677 case TARGET_NR_getrusage: 6678 { 6679 struct rusage rusage; 6680 ret = get_errno(getrusage(arg1, &rusage)); 6681 if (!is_error(ret)) { 6682 ret = host_to_target_rusage(arg2, &rusage); 6683 } 6684 } 6685 break; 6686 case TARGET_NR_gettimeofday: 6687 { 6688 struct timeval tv; 6689 ret = get_errno(gettimeofday(&tv, NULL)); 6690 if (!is_error(ret)) { 6691 if (copy_to_user_timeval(arg1, &tv)) 6692 goto efault; 6693 } 6694 } 6695 break; 6696 case TARGET_NR_settimeofday: 6697 { 6698 struct timeval tv, *ptv = NULL; 6699 struct timezone tz, *ptz = NULL; 6700 6701 if (arg1) { 6702 if (copy_from_user_timeval(&tv, arg1)) { 6703 goto efault; 6704 } 6705 ptv = &tv; 6706 } 6707 6708 if (arg2) { 6709 if (copy_from_user_timezone(&tz, arg2)) { 6710 goto efault; 6711 } 6712 ptz = &tz; 6713 } 6714 6715 ret = get_errno(settimeofday(ptv, ptz)); 6716 } 6717 break; 6718 #if defined(TARGET_NR_select) 6719 case TARGET_NR_select: 6720 #if defined(TARGET_S390X) || defined(TARGET_ALPHA) 6721 ret = do_select(arg1, arg2, arg3, arg4, arg5); 6722 #else 6723 { 6724 struct target_sel_arg_struct *sel; 6725 abi_ulong inp, outp, exp, tvp; 6726 long nsel; 6727 6728 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) 6729 goto efault; 6730 nsel = tswapal(sel->n); 6731 inp = tswapal(sel->inp); 6732 outp = tswapal(sel->outp); 6733 exp = tswapal(sel->exp); 6734 tvp = tswapal(sel->tvp); 6735 unlock_user_struct(sel, arg1, 0); 6736 ret = do_select(nsel, inp, outp, exp, tvp); 6737 } 6738 #endif 6739 break; 6740 #endif 6741 #ifdef TARGET_NR_pselect6 6742 case TARGET_NR_pselect6: 6743 { 6744 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 6745 fd_set rfds, wfds, efds; 6746 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 6747 struct timespec ts, *ts_ptr; 6748 6749 /* 6750 * The 6th arg is actually two args smashed together, 6751 * so we cannot use the C library. 6752 */ 6753 sigset_t set; 6754 struct { 6755 sigset_t *set; 6756 size_t size; 6757 } sig, *sig_ptr; 6758 6759 abi_ulong arg_sigset, arg_sigsize, *arg7; 6760 target_sigset_t *target_sigset; 6761 6762 n = arg1; 6763 rfd_addr = arg2; 6764 wfd_addr = arg3; 6765 efd_addr = arg4; 6766 ts_addr = arg5; 6767 6768 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 6769 if (ret) { 6770 goto fail; 6771 } 6772 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 6773 if (ret) { 6774 goto fail; 6775 } 6776 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 6777 if (ret) { 6778 goto fail; 6779 } 6780 6781 /* 6782 * This takes a timespec, and not a timeval, so we cannot 6783 * use the do_select() helper ... 6784 */ 6785 if (ts_addr) { 6786 if (target_to_host_timespec(&ts, ts_addr)) { 6787 goto efault; 6788 } 6789 ts_ptr = &ts; 6790 } else { 6791 ts_ptr = NULL; 6792 } 6793 6794 /* Extract the two packed args for the sigset */ 6795 if (arg6) { 6796 sig_ptr = &sig; 6797 sig.size = _NSIG / 8; 6798 6799 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 6800 if (!arg7) { 6801 goto efault; 6802 } 6803 arg_sigset = tswapal(arg7[0]); 6804 arg_sigsize = tswapal(arg7[1]); 6805 unlock_user(arg7, arg6, 0); 6806 6807 if (arg_sigset) { 6808 sig.set = &set; 6809 if (arg_sigsize != sizeof(*target_sigset)) { 6810 /* Like the kernel, we enforce correct size sigsets */ 6811 ret = -TARGET_EINVAL; 6812 goto fail; 6813 } 6814 target_sigset = lock_user(VERIFY_READ, arg_sigset, 6815 sizeof(*target_sigset), 1); 6816 if (!target_sigset) { 6817 goto efault; 6818 } 6819 target_to_host_sigset(&set, target_sigset); 6820 unlock_user(target_sigset, arg_sigset, 0); 6821 } else { 6822 sig.set = NULL; 6823 } 6824 } else { 6825 sig_ptr = NULL; 6826 } 6827 6828 ret = get_errno(sys_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 6829 ts_ptr, sig_ptr)); 6830 6831 if (!is_error(ret)) { 6832 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 6833 goto efault; 6834 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 6835 goto efault; 6836 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 6837 goto efault; 6838 6839 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) 6840 goto efault; 6841 } 6842 } 6843 break; 6844 #endif 6845 #ifdef TARGET_NR_symlink 6846 case TARGET_NR_symlink: 6847 { 6848 void *p2; 6849 p = lock_user_string(arg1); 6850 p2 = lock_user_string(arg2); 6851 if (!p || !p2) 6852 ret = -TARGET_EFAULT; 6853 else 6854 ret = get_errno(symlink(p, p2)); 6855 unlock_user(p2, arg2, 0); 6856 unlock_user(p, arg1, 0); 6857 } 6858 break; 6859 #endif 6860 #if defined(TARGET_NR_symlinkat) 6861 case TARGET_NR_symlinkat: 6862 { 6863 void *p2; 6864 p = lock_user_string(arg1); 6865 p2 = lock_user_string(arg3); 6866 if (!p || !p2) 6867 ret = -TARGET_EFAULT; 6868 else 6869 ret = get_errno(symlinkat(p, arg2, p2)); 6870 unlock_user(p2, arg3, 0); 6871 unlock_user(p, arg1, 0); 6872 } 6873 break; 6874 #endif 6875 #ifdef TARGET_NR_oldlstat 6876 case TARGET_NR_oldlstat: 6877 goto unimplemented; 6878 #endif 6879 #ifdef TARGET_NR_readlink 6880 case TARGET_NR_readlink: 6881 { 6882 void *p2; 6883 p = lock_user_string(arg1); 6884 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 6885 if (!p || !p2) { 6886 ret = -TARGET_EFAULT; 6887 } else if (!arg3) { 6888 /* Short circuit this for the magic exe check. */ 6889 ret = -TARGET_EINVAL; 6890 } else if (is_proc_myself((const char *)p, "exe")) { 6891 char real[PATH_MAX], *temp; 6892 temp = realpath(exec_path, real); 6893 /* Return value is # of bytes that we wrote to the buffer. */ 6894 if (temp == NULL) { 6895 ret = get_errno(-1); 6896 } else { 6897 /* Don't worry about sign mismatch as earlier mapping 6898 * logic would have thrown a bad address error. */ 6899 ret = MIN(strlen(real), arg3); 6900 /* We cannot NUL terminate the string. */ 6901 memcpy(p2, real, ret); 6902 } 6903 } else { 6904 ret = get_errno(readlink(path(p), p2, arg3)); 6905 } 6906 unlock_user(p2, arg2, ret); 6907 unlock_user(p, arg1, 0); 6908 } 6909 break; 6910 #endif 6911 #if defined(TARGET_NR_readlinkat) 6912 case TARGET_NR_readlinkat: 6913 { 6914 void *p2; 6915 p = lock_user_string(arg2); 6916 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 6917 if (!p || !p2) { 6918 ret = -TARGET_EFAULT; 6919 } else if (is_proc_myself((const char *)p, "exe")) { 6920 char real[PATH_MAX], *temp; 6921 temp = realpath(exec_path, real); 6922 ret = temp == NULL ? get_errno(-1) : strlen(real) ; 6923 snprintf((char *)p2, arg4, "%s", real); 6924 } else { 6925 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 6926 } 6927 unlock_user(p2, arg3, ret); 6928 unlock_user(p, arg2, 0); 6929 } 6930 break; 6931 #endif 6932 #ifdef TARGET_NR_uselib 6933 case TARGET_NR_uselib: 6934 goto unimplemented; 6935 #endif 6936 #ifdef TARGET_NR_swapon 6937 case TARGET_NR_swapon: 6938 if (!(p = lock_user_string(arg1))) 6939 goto efault; 6940 ret = get_errno(swapon(p, arg2)); 6941 unlock_user(p, arg1, 0); 6942 break; 6943 #endif 6944 case TARGET_NR_reboot: 6945 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 6946 /* arg4 must be ignored in all other cases */ 6947 p = lock_user_string(arg4); 6948 if (!p) { 6949 goto efault; 6950 } 6951 ret = get_errno(reboot(arg1, arg2, arg3, p)); 6952 unlock_user(p, arg4, 0); 6953 } else { 6954 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 6955 } 6956 break; 6957 #ifdef TARGET_NR_readdir 6958 case TARGET_NR_readdir: 6959 goto unimplemented; 6960 #endif 6961 #ifdef TARGET_NR_mmap 6962 case TARGET_NR_mmap: 6963 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 6964 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 6965 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 6966 || defined(TARGET_S390X) 6967 { 6968 abi_ulong *v; 6969 abi_ulong v1, v2, v3, v4, v5, v6; 6970 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 6971 goto efault; 6972 v1 = tswapal(v[0]); 6973 v2 = tswapal(v[1]); 6974 v3 = tswapal(v[2]); 6975 v4 = tswapal(v[3]); 6976 v5 = tswapal(v[4]); 6977 v6 = tswapal(v[5]); 6978 unlock_user(v, arg1, 0); 6979 ret = get_errno(target_mmap(v1, v2, v3, 6980 target_to_host_bitmask(v4, mmap_flags_tbl), 6981 v5, v6)); 6982 } 6983 #else 6984 ret = get_errno(target_mmap(arg1, arg2, arg3, 6985 target_to_host_bitmask(arg4, mmap_flags_tbl), 6986 arg5, 6987 arg6)); 6988 #endif 6989 break; 6990 #endif 6991 #ifdef TARGET_NR_mmap2 6992 case TARGET_NR_mmap2: 6993 #ifndef MMAP_SHIFT 6994 #define MMAP_SHIFT 12 6995 #endif 6996 ret = get_errno(target_mmap(arg1, arg2, arg3, 6997 target_to_host_bitmask(arg4, mmap_flags_tbl), 6998 arg5, 6999 arg6 << MMAP_SHIFT)); 7000 break; 7001 #endif 7002 case TARGET_NR_munmap: 7003 ret = get_errno(target_munmap(arg1, arg2)); 7004 break; 7005 case TARGET_NR_mprotect: 7006 { 7007 TaskState *ts = cpu->opaque; 7008 /* Special hack to detect libc making the stack executable. */ 7009 if ((arg3 & PROT_GROWSDOWN) 7010 && arg1 >= ts->info->stack_limit 7011 && arg1 <= ts->info->start_stack) { 7012 arg3 &= ~PROT_GROWSDOWN; 7013 arg2 = arg2 + arg1 - ts->info->stack_limit; 7014 arg1 = ts->info->stack_limit; 7015 } 7016 } 7017 ret = get_errno(target_mprotect(arg1, arg2, arg3)); 7018 break; 7019 #ifdef TARGET_NR_mremap 7020 case TARGET_NR_mremap: 7021 ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 7022 break; 7023 #endif 7024 /* ??? msync/mlock/munlock are broken for softmmu. */ 7025 #ifdef TARGET_NR_msync 7026 case TARGET_NR_msync: 7027 ret = get_errno(msync(g2h(arg1), arg2, arg3)); 7028 break; 7029 #endif 7030 #ifdef TARGET_NR_mlock 7031 case TARGET_NR_mlock: 7032 ret = get_errno(mlock(g2h(arg1), arg2)); 7033 break; 7034 #endif 7035 #ifdef TARGET_NR_munlock 7036 case TARGET_NR_munlock: 7037 ret = get_errno(munlock(g2h(arg1), arg2)); 7038 break; 7039 #endif 7040 #ifdef TARGET_NR_mlockall 7041 case TARGET_NR_mlockall: 7042 ret = get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 7043 break; 7044 #endif 7045 #ifdef TARGET_NR_munlockall 7046 case TARGET_NR_munlockall: 7047 ret = get_errno(munlockall()); 7048 break; 7049 #endif 7050 case TARGET_NR_truncate: 7051 if (!(p = lock_user_string(arg1))) 7052 goto efault; 7053 ret = get_errno(truncate(p, arg2)); 7054 unlock_user(p, arg1, 0); 7055 break; 7056 case TARGET_NR_ftruncate: 7057 ret = get_errno(ftruncate(arg1, arg2)); 7058 break; 7059 case TARGET_NR_fchmod: 7060 ret = get_errno(fchmod(arg1, arg2)); 7061 break; 7062 #if defined(TARGET_NR_fchmodat) 7063 case TARGET_NR_fchmodat: 7064 if (!(p = lock_user_string(arg2))) 7065 goto efault; 7066 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 7067 unlock_user(p, arg2, 0); 7068 break; 7069 #endif 7070 case TARGET_NR_getpriority: 7071 /* Note that negative values are valid for getpriority, so we must 7072 differentiate based on errno settings. */ 7073 errno = 0; 7074 ret = getpriority(arg1, arg2); 7075 if (ret == -1 && errno != 0) { 7076 ret = -host_to_target_errno(errno); 7077 break; 7078 } 7079 #ifdef TARGET_ALPHA 7080 /* Return value is the unbiased priority. Signal no error. */ 7081 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; 7082 #else 7083 /* Return value is a biased priority to avoid negative numbers. */ 7084 ret = 20 - ret; 7085 #endif 7086 break; 7087 case TARGET_NR_setpriority: 7088 ret = get_errno(setpriority(arg1, arg2, arg3)); 7089 break; 7090 #ifdef TARGET_NR_profil 7091 case TARGET_NR_profil: 7092 goto unimplemented; 7093 #endif 7094 case TARGET_NR_statfs: 7095 if (!(p = lock_user_string(arg1))) 7096 goto efault; 7097 ret = get_errno(statfs(path(p), &stfs)); 7098 unlock_user(p, arg1, 0); 7099 convert_statfs: 7100 if (!is_error(ret)) { 7101 struct target_statfs *target_stfs; 7102 7103 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 7104 goto efault; 7105 __put_user(stfs.f_type, &target_stfs->f_type); 7106 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 7107 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 7108 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 7109 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 7110 __put_user(stfs.f_files, &target_stfs->f_files); 7111 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 7112 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 7113 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 7114 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 7115 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 7116 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 7117 unlock_user_struct(target_stfs, arg2, 1); 7118 } 7119 break; 7120 case TARGET_NR_fstatfs: 7121 ret = get_errno(fstatfs(arg1, &stfs)); 7122 goto convert_statfs; 7123 #ifdef TARGET_NR_statfs64 7124 case TARGET_NR_statfs64: 7125 if (!(p = lock_user_string(arg1))) 7126 goto efault; 7127 ret = get_errno(statfs(path(p), &stfs)); 7128 unlock_user(p, arg1, 0); 7129 convert_statfs64: 7130 if (!is_error(ret)) { 7131 struct target_statfs64 *target_stfs; 7132 7133 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 7134 goto efault; 7135 __put_user(stfs.f_type, &target_stfs->f_type); 7136 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 7137 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 7138 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 7139 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 7140 __put_user(stfs.f_files, &target_stfs->f_files); 7141 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 7142 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 7143 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 7144 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 7145 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 7146 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 7147 unlock_user_struct(target_stfs, arg3, 1); 7148 } 7149 break; 7150 case TARGET_NR_fstatfs64: 7151 ret = get_errno(fstatfs(arg1, &stfs)); 7152 goto convert_statfs64; 7153 #endif 7154 #ifdef TARGET_NR_ioperm 7155 case TARGET_NR_ioperm: 7156 goto unimplemented; 7157 #endif 7158 #ifdef TARGET_NR_socketcall 7159 case TARGET_NR_socketcall: 7160 ret = do_socketcall(arg1, arg2); 7161 break; 7162 #endif 7163 #ifdef TARGET_NR_accept 7164 case TARGET_NR_accept: 7165 ret = do_accept4(arg1, arg2, arg3, 0); 7166 break; 7167 #endif 7168 #ifdef TARGET_NR_accept4 7169 case TARGET_NR_accept4: 7170 #ifdef CONFIG_ACCEPT4 7171 ret = do_accept4(arg1, arg2, arg3, arg4); 7172 #else 7173 goto unimplemented; 7174 #endif 7175 break; 7176 #endif 7177 #ifdef TARGET_NR_bind 7178 case TARGET_NR_bind: 7179 ret = do_bind(arg1, arg2, arg3); 7180 break; 7181 #endif 7182 #ifdef TARGET_NR_connect 7183 case TARGET_NR_connect: 7184 ret = do_connect(arg1, arg2, arg3); 7185 break; 7186 #endif 7187 #ifdef TARGET_NR_getpeername 7188 case TARGET_NR_getpeername: 7189 ret = do_getpeername(arg1, arg2, arg3); 7190 break; 7191 #endif 7192 #ifdef TARGET_NR_getsockname 7193 case TARGET_NR_getsockname: 7194 ret = do_getsockname(arg1, arg2, arg3); 7195 break; 7196 #endif 7197 #ifdef TARGET_NR_getsockopt 7198 case TARGET_NR_getsockopt: 7199 ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5); 7200 break; 7201 #endif 7202 #ifdef TARGET_NR_listen 7203 case TARGET_NR_listen: 7204 ret = get_errno(listen(arg1, arg2)); 7205 break; 7206 #endif 7207 #ifdef TARGET_NR_recv 7208 case TARGET_NR_recv: 7209 ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 7210 break; 7211 #endif 7212 #ifdef TARGET_NR_recvfrom 7213 case TARGET_NR_recvfrom: 7214 ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 7215 break; 7216 #endif 7217 #ifdef TARGET_NR_recvmsg 7218 case TARGET_NR_recvmsg: 7219 ret = do_sendrecvmsg(arg1, arg2, arg3, 0); 7220 break; 7221 #endif 7222 #ifdef TARGET_NR_send 7223 case TARGET_NR_send: 7224 ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0); 7225 break; 7226 #endif 7227 #ifdef TARGET_NR_sendmsg 7228 case TARGET_NR_sendmsg: 7229 ret = do_sendrecvmsg(arg1, arg2, arg3, 1); 7230 break; 7231 #endif 7232 #ifdef TARGET_NR_sendmmsg 7233 case TARGET_NR_sendmmsg: 7234 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 7235 break; 7236 case TARGET_NR_recvmmsg: 7237 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 7238 break; 7239 #endif 7240 #ifdef TARGET_NR_sendto 7241 case TARGET_NR_sendto: 7242 ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 7243 break; 7244 #endif 7245 #ifdef TARGET_NR_shutdown 7246 case TARGET_NR_shutdown: 7247 ret = get_errno(shutdown(arg1, arg2)); 7248 break; 7249 #endif 7250 #ifdef TARGET_NR_socket 7251 case TARGET_NR_socket: 7252 ret = do_socket(arg1, arg2, arg3); 7253 break; 7254 #endif 7255 #ifdef TARGET_NR_socketpair 7256 case TARGET_NR_socketpair: 7257 ret = do_socketpair(arg1, arg2, arg3, arg4); 7258 break; 7259 #endif 7260 #ifdef TARGET_NR_setsockopt 7261 case TARGET_NR_setsockopt: 7262 ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 7263 break; 7264 #endif 7265 7266 case TARGET_NR_syslog: 7267 if (!(p = lock_user_string(arg2))) 7268 goto efault; 7269 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 7270 unlock_user(p, arg2, 0); 7271 break; 7272 7273 case TARGET_NR_setitimer: 7274 { 7275 struct itimerval value, ovalue, *pvalue; 7276 7277 if (arg2) { 7278 pvalue = &value; 7279 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 7280 || copy_from_user_timeval(&pvalue->it_value, 7281 arg2 + sizeof(struct target_timeval))) 7282 goto efault; 7283 } else { 7284 pvalue = NULL; 7285 } 7286 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 7287 if (!is_error(ret) && arg3) { 7288 if (copy_to_user_timeval(arg3, 7289 &ovalue.it_interval) 7290 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 7291 &ovalue.it_value)) 7292 goto efault; 7293 } 7294 } 7295 break; 7296 case TARGET_NR_getitimer: 7297 { 7298 struct itimerval value; 7299 7300 ret = get_errno(getitimer(arg1, &value)); 7301 if (!is_error(ret) && arg2) { 7302 if (copy_to_user_timeval(arg2, 7303 &value.it_interval) 7304 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 7305 &value.it_value)) 7306 goto efault; 7307 } 7308 } 7309 break; 7310 #ifdef TARGET_NR_stat 7311 case TARGET_NR_stat: 7312 if (!(p = lock_user_string(arg1))) 7313 goto efault; 7314 ret = get_errno(stat(path(p), &st)); 7315 unlock_user(p, arg1, 0); 7316 goto do_stat; 7317 #endif 7318 #ifdef TARGET_NR_lstat 7319 case TARGET_NR_lstat: 7320 if (!(p = lock_user_string(arg1))) 7321 goto efault; 7322 ret = get_errno(lstat(path(p), &st)); 7323 unlock_user(p, arg1, 0); 7324 goto do_stat; 7325 #endif 7326 case TARGET_NR_fstat: 7327 { 7328 ret = get_errno(fstat(arg1, &st)); 7329 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 7330 do_stat: 7331 #endif 7332 if (!is_error(ret)) { 7333 struct target_stat *target_st; 7334 7335 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 7336 goto efault; 7337 memset(target_st, 0, sizeof(*target_st)); 7338 __put_user(st.st_dev, &target_st->st_dev); 7339 __put_user(st.st_ino, &target_st->st_ino); 7340 __put_user(st.st_mode, &target_st->st_mode); 7341 __put_user(st.st_uid, &target_st->st_uid); 7342 __put_user(st.st_gid, &target_st->st_gid); 7343 __put_user(st.st_nlink, &target_st->st_nlink); 7344 __put_user(st.st_rdev, &target_st->st_rdev); 7345 __put_user(st.st_size, &target_st->st_size); 7346 __put_user(st.st_blksize, &target_st->st_blksize); 7347 __put_user(st.st_blocks, &target_st->st_blocks); 7348 __put_user(st.st_atime, &target_st->target_st_atime); 7349 __put_user(st.st_mtime, &target_st->target_st_mtime); 7350 __put_user(st.st_ctime, &target_st->target_st_ctime); 7351 unlock_user_struct(target_st, arg2, 1); 7352 } 7353 } 7354 break; 7355 #ifdef TARGET_NR_olduname 7356 case TARGET_NR_olduname: 7357 goto unimplemented; 7358 #endif 7359 #ifdef TARGET_NR_iopl 7360 case TARGET_NR_iopl: 7361 goto unimplemented; 7362 #endif 7363 case TARGET_NR_vhangup: 7364 ret = get_errno(vhangup()); 7365 break; 7366 #ifdef TARGET_NR_idle 7367 case TARGET_NR_idle: 7368 goto unimplemented; 7369 #endif 7370 #ifdef TARGET_NR_syscall 7371 case TARGET_NR_syscall: 7372 ret = do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 7373 arg6, arg7, arg8, 0); 7374 break; 7375 #endif 7376 case TARGET_NR_wait4: 7377 { 7378 int status; 7379 abi_long status_ptr = arg2; 7380 struct rusage rusage, *rusage_ptr; 7381 abi_ulong target_rusage = arg4; 7382 abi_long rusage_err; 7383 if (target_rusage) 7384 rusage_ptr = &rusage; 7385 else 7386 rusage_ptr = NULL; 7387 ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr)); 7388 if (!is_error(ret)) { 7389 if (status_ptr && ret) { 7390 status = host_to_target_waitstatus(status); 7391 if (put_user_s32(status, status_ptr)) 7392 goto efault; 7393 } 7394 if (target_rusage) { 7395 rusage_err = host_to_target_rusage(target_rusage, &rusage); 7396 if (rusage_err) { 7397 ret = rusage_err; 7398 } 7399 } 7400 } 7401 } 7402 break; 7403 #ifdef TARGET_NR_swapoff 7404 case TARGET_NR_swapoff: 7405 if (!(p = lock_user_string(arg1))) 7406 goto efault; 7407 ret = get_errno(swapoff(p)); 7408 unlock_user(p, arg1, 0); 7409 break; 7410 #endif 7411 case TARGET_NR_sysinfo: 7412 { 7413 struct target_sysinfo *target_value; 7414 struct sysinfo value; 7415 ret = get_errno(sysinfo(&value)); 7416 if (!is_error(ret) && arg1) 7417 { 7418 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 7419 goto efault; 7420 __put_user(value.uptime, &target_value->uptime); 7421 __put_user(value.loads[0], &target_value->loads[0]); 7422 __put_user(value.loads[1], &target_value->loads[1]); 7423 __put_user(value.loads[2], &target_value->loads[2]); 7424 __put_user(value.totalram, &target_value->totalram); 7425 __put_user(value.freeram, &target_value->freeram); 7426 __put_user(value.sharedram, &target_value->sharedram); 7427 __put_user(value.bufferram, &target_value->bufferram); 7428 __put_user(value.totalswap, &target_value->totalswap); 7429 __put_user(value.freeswap, &target_value->freeswap); 7430 __put_user(value.procs, &target_value->procs); 7431 __put_user(value.totalhigh, &target_value->totalhigh); 7432 __put_user(value.freehigh, &target_value->freehigh); 7433 __put_user(value.mem_unit, &target_value->mem_unit); 7434 unlock_user_struct(target_value, arg1, 1); 7435 } 7436 } 7437 break; 7438 #ifdef TARGET_NR_ipc 7439 case TARGET_NR_ipc: 7440 ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6); 7441 break; 7442 #endif 7443 #ifdef TARGET_NR_semget 7444 case TARGET_NR_semget: 7445 ret = get_errno(semget(arg1, arg2, arg3)); 7446 break; 7447 #endif 7448 #ifdef TARGET_NR_semop 7449 case TARGET_NR_semop: 7450 ret = do_semop(arg1, arg2, arg3); 7451 break; 7452 #endif 7453 #ifdef TARGET_NR_semctl 7454 case TARGET_NR_semctl: 7455 ret = do_semctl(arg1, arg2, arg3, (union target_semun)(abi_ulong)arg4); 7456 break; 7457 #endif 7458 #ifdef TARGET_NR_msgctl 7459 case TARGET_NR_msgctl: 7460 ret = do_msgctl(arg1, arg2, arg3); 7461 break; 7462 #endif 7463 #ifdef TARGET_NR_msgget 7464 case TARGET_NR_msgget: 7465 ret = get_errno(msgget(arg1, arg2)); 7466 break; 7467 #endif 7468 #ifdef TARGET_NR_msgrcv 7469 case TARGET_NR_msgrcv: 7470 ret = do_msgrcv(arg1, arg2, arg3, arg4, arg5); 7471 break; 7472 #endif 7473 #ifdef TARGET_NR_msgsnd 7474 case TARGET_NR_msgsnd: 7475 ret = do_msgsnd(arg1, arg2, arg3, arg4); 7476 break; 7477 #endif 7478 #ifdef TARGET_NR_shmget 7479 case TARGET_NR_shmget: 7480 ret = get_errno(shmget(arg1, arg2, arg3)); 7481 break; 7482 #endif 7483 #ifdef TARGET_NR_shmctl 7484 case TARGET_NR_shmctl: 7485 ret = do_shmctl(arg1, arg2, arg3); 7486 break; 7487 #endif 7488 #ifdef TARGET_NR_shmat 7489 case TARGET_NR_shmat: 7490 ret = do_shmat(arg1, arg2, arg3); 7491 break; 7492 #endif 7493 #ifdef TARGET_NR_shmdt 7494 case TARGET_NR_shmdt: 7495 ret = do_shmdt(arg1); 7496 break; 7497 #endif 7498 case TARGET_NR_fsync: 7499 ret = get_errno(fsync(arg1)); 7500 break; 7501 case TARGET_NR_clone: 7502 /* Linux manages to have three different orderings for its 7503 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 7504 * match the kernel's CONFIG_CLONE_* settings. 7505 * Microblaze is further special in that it uses a sixth 7506 * implicit argument to clone for the TLS pointer. 7507 */ 7508 #if defined(TARGET_MICROBLAZE) 7509 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 7510 #elif defined(TARGET_CLONE_BACKWARDS) 7511 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 7512 #elif defined(TARGET_CLONE_BACKWARDS2) 7513 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 7514 #else 7515 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 7516 #endif 7517 break; 7518 #ifdef __NR_exit_group 7519 /* new thread calls */ 7520 case TARGET_NR_exit_group: 7521 #ifdef TARGET_GPROF 7522 _mcleanup(); 7523 #endif 7524 gdb_exit(cpu_env, arg1); 7525 ret = get_errno(exit_group(arg1)); 7526 break; 7527 #endif 7528 case TARGET_NR_setdomainname: 7529 if (!(p = lock_user_string(arg1))) 7530 goto efault; 7531 ret = get_errno(setdomainname(p, arg2)); 7532 unlock_user(p, arg1, 0); 7533 break; 7534 case TARGET_NR_uname: 7535 /* no need to transcode because we use the linux syscall */ 7536 { 7537 struct new_utsname * buf; 7538 7539 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 7540 goto efault; 7541 ret = get_errno(sys_uname(buf)); 7542 if (!is_error(ret)) { 7543 /* Overrite the native machine name with whatever is being 7544 emulated. */ 7545 strcpy (buf->machine, cpu_to_uname_machine(cpu_env)); 7546 /* Allow the user to override the reported release. */ 7547 if (qemu_uname_release && *qemu_uname_release) 7548 strcpy (buf->release, qemu_uname_release); 7549 } 7550 unlock_user_struct(buf, arg1, 1); 7551 } 7552 break; 7553 #ifdef TARGET_I386 7554 case TARGET_NR_modify_ldt: 7555 ret = do_modify_ldt(cpu_env, arg1, arg2, arg3); 7556 break; 7557 #if !defined(TARGET_X86_64) 7558 case TARGET_NR_vm86old: 7559 goto unimplemented; 7560 case TARGET_NR_vm86: 7561 ret = do_vm86(cpu_env, arg1, arg2); 7562 break; 7563 #endif 7564 #endif 7565 case TARGET_NR_adjtimex: 7566 goto unimplemented; 7567 #ifdef TARGET_NR_create_module 7568 case TARGET_NR_create_module: 7569 #endif 7570 case TARGET_NR_init_module: 7571 case TARGET_NR_delete_module: 7572 #ifdef TARGET_NR_get_kernel_syms 7573 case TARGET_NR_get_kernel_syms: 7574 #endif 7575 goto unimplemented; 7576 case TARGET_NR_quotactl: 7577 goto unimplemented; 7578 case TARGET_NR_getpgid: 7579 ret = get_errno(getpgid(arg1)); 7580 break; 7581 case TARGET_NR_fchdir: 7582 ret = get_errno(fchdir(arg1)); 7583 break; 7584 #ifdef TARGET_NR_bdflush /* not on x86_64 */ 7585 case TARGET_NR_bdflush: 7586 goto unimplemented; 7587 #endif 7588 #ifdef TARGET_NR_sysfs 7589 case TARGET_NR_sysfs: 7590 goto unimplemented; 7591 #endif 7592 case TARGET_NR_personality: 7593 ret = get_errno(personality(arg1)); 7594 break; 7595 #ifdef TARGET_NR_afs_syscall 7596 case TARGET_NR_afs_syscall: 7597 goto unimplemented; 7598 #endif 7599 #ifdef TARGET_NR__llseek /* Not on alpha */ 7600 case TARGET_NR__llseek: 7601 { 7602 int64_t res; 7603 #if !defined(__NR_llseek) 7604 res = lseek(arg1, ((uint64_t)arg2 << 32) | arg3, arg5); 7605 if (res == -1) { 7606 ret = get_errno(res); 7607 } else { 7608 ret = 0; 7609 } 7610 #else 7611 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 7612 #endif 7613 if ((ret == 0) && put_user_s64(res, arg4)) { 7614 goto efault; 7615 } 7616 } 7617 break; 7618 #endif 7619 #ifdef TARGET_NR_getdents 7620 case TARGET_NR_getdents: 7621 #ifdef __NR_getdents 7622 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 7623 { 7624 struct target_dirent *target_dirp; 7625 struct linux_dirent *dirp; 7626 abi_long count = arg3; 7627 7628 dirp = malloc(count); 7629 if (!dirp) { 7630 ret = -TARGET_ENOMEM; 7631 goto fail; 7632 } 7633 7634 ret = get_errno(sys_getdents(arg1, dirp, count)); 7635 if (!is_error(ret)) { 7636 struct linux_dirent *de; 7637 struct target_dirent *tde; 7638 int len = ret; 7639 int reclen, treclen; 7640 int count1, tnamelen; 7641 7642 count1 = 0; 7643 de = dirp; 7644 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 7645 goto efault; 7646 tde = target_dirp; 7647 while (len > 0) { 7648 reclen = de->d_reclen; 7649 tnamelen = reclen - offsetof(struct linux_dirent, d_name); 7650 assert(tnamelen >= 0); 7651 treclen = tnamelen + offsetof(struct target_dirent, d_name); 7652 assert(count1 + treclen <= count); 7653 tde->d_reclen = tswap16(treclen); 7654 tde->d_ino = tswapal(de->d_ino); 7655 tde->d_off = tswapal(de->d_off); 7656 memcpy(tde->d_name, de->d_name, tnamelen); 7657 de = (struct linux_dirent *)((char *)de + reclen); 7658 len -= reclen; 7659 tde = (struct target_dirent *)((char *)tde + treclen); 7660 count1 += treclen; 7661 } 7662 ret = count1; 7663 unlock_user(target_dirp, arg2, ret); 7664 } 7665 free(dirp); 7666 } 7667 #else 7668 { 7669 struct linux_dirent *dirp; 7670 abi_long count = arg3; 7671 7672 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 7673 goto efault; 7674 ret = get_errno(sys_getdents(arg1, dirp, count)); 7675 if (!is_error(ret)) { 7676 struct linux_dirent *de; 7677 int len = ret; 7678 int reclen; 7679 de = dirp; 7680 while (len > 0) { 7681 reclen = de->d_reclen; 7682 if (reclen > len) 7683 break; 7684 de->d_reclen = tswap16(reclen); 7685 tswapls(&de->d_ino); 7686 tswapls(&de->d_off); 7687 de = (struct linux_dirent *)((char *)de + reclen); 7688 len -= reclen; 7689 } 7690 } 7691 unlock_user(dirp, arg2, ret); 7692 } 7693 #endif 7694 #else 7695 /* Implement getdents in terms of getdents64 */ 7696 { 7697 struct linux_dirent64 *dirp; 7698 abi_long count = arg3; 7699 7700 dirp = lock_user(VERIFY_WRITE, arg2, count, 0); 7701 if (!dirp) { 7702 goto efault; 7703 } 7704 ret = get_errno(sys_getdents64(arg1, dirp, count)); 7705 if (!is_error(ret)) { 7706 /* Convert the dirent64 structs to target dirent. We do this 7707 * in-place, since we can guarantee that a target_dirent is no 7708 * larger than a dirent64; however this means we have to be 7709 * careful to read everything before writing in the new format. 7710 */ 7711 struct linux_dirent64 *de; 7712 struct target_dirent *tde; 7713 int len = ret; 7714 int tlen = 0; 7715 7716 de = dirp; 7717 tde = (struct target_dirent *)dirp; 7718 while (len > 0) { 7719 int namelen, treclen; 7720 int reclen = de->d_reclen; 7721 uint64_t ino = de->d_ino; 7722 int64_t off = de->d_off; 7723 uint8_t type = de->d_type; 7724 7725 namelen = strlen(de->d_name); 7726 treclen = offsetof(struct target_dirent, d_name) 7727 + namelen + 2; 7728 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long)); 7729 7730 memmove(tde->d_name, de->d_name, namelen + 1); 7731 tde->d_ino = tswapal(ino); 7732 tde->d_off = tswapal(off); 7733 tde->d_reclen = tswap16(treclen); 7734 /* The target_dirent type is in what was formerly a padding 7735 * byte at the end of the structure: 7736 */ 7737 *(((char *)tde) + treclen - 1) = type; 7738 7739 de = (struct linux_dirent64 *)((char *)de + reclen); 7740 tde = (struct target_dirent *)((char *)tde + treclen); 7741 len -= reclen; 7742 tlen += treclen; 7743 } 7744 ret = tlen; 7745 } 7746 unlock_user(dirp, arg2, ret); 7747 } 7748 #endif 7749 break; 7750 #endif /* TARGET_NR_getdents */ 7751 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 7752 case TARGET_NR_getdents64: 7753 { 7754 struct linux_dirent64 *dirp; 7755 abi_long count = arg3; 7756 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 7757 goto efault; 7758 ret = get_errno(sys_getdents64(arg1, dirp, count)); 7759 if (!is_error(ret)) { 7760 struct linux_dirent64 *de; 7761 int len = ret; 7762 int reclen; 7763 de = dirp; 7764 while (len > 0) { 7765 reclen = de->d_reclen; 7766 if (reclen > len) 7767 break; 7768 de->d_reclen = tswap16(reclen); 7769 tswap64s((uint64_t *)&de->d_ino); 7770 tswap64s((uint64_t *)&de->d_off); 7771 de = (struct linux_dirent64 *)((char *)de + reclen); 7772 len -= reclen; 7773 } 7774 } 7775 unlock_user(dirp, arg2, ret); 7776 } 7777 break; 7778 #endif /* TARGET_NR_getdents64 */ 7779 #if defined(TARGET_NR__newselect) 7780 case TARGET_NR__newselect: 7781 ret = do_select(arg1, arg2, arg3, arg4, arg5); 7782 break; 7783 #endif 7784 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) 7785 # ifdef TARGET_NR_poll 7786 case TARGET_NR_poll: 7787 # endif 7788 # ifdef TARGET_NR_ppoll 7789 case TARGET_NR_ppoll: 7790 # endif 7791 { 7792 struct target_pollfd *target_pfd; 7793 unsigned int nfds = arg2; 7794 int timeout = arg3; 7795 struct pollfd *pfd; 7796 unsigned int i; 7797 7798 target_pfd = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_pollfd) * nfds, 1); 7799 if (!target_pfd) 7800 goto efault; 7801 7802 pfd = alloca(sizeof(struct pollfd) * nfds); 7803 for(i = 0; i < nfds; i++) { 7804 pfd[i].fd = tswap32(target_pfd[i].fd); 7805 pfd[i].events = tswap16(target_pfd[i].events); 7806 } 7807 7808 # ifdef TARGET_NR_ppoll 7809 if (num == TARGET_NR_ppoll) { 7810 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 7811 target_sigset_t *target_set; 7812 sigset_t _set, *set = &_set; 7813 7814 if (arg3) { 7815 if (target_to_host_timespec(timeout_ts, arg3)) { 7816 unlock_user(target_pfd, arg1, 0); 7817 goto efault; 7818 } 7819 } else { 7820 timeout_ts = NULL; 7821 } 7822 7823 if (arg4) { 7824 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1); 7825 if (!target_set) { 7826 unlock_user(target_pfd, arg1, 0); 7827 goto efault; 7828 } 7829 target_to_host_sigset(set, target_set); 7830 } else { 7831 set = NULL; 7832 } 7833 7834 ret = get_errno(sys_ppoll(pfd, nfds, timeout_ts, set, _NSIG/8)); 7835 7836 if (!is_error(ret) && arg3) { 7837 host_to_target_timespec(arg3, timeout_ts); 7838 } 7839 if (arg4) { 7840 unlock_user(target_set, arg4, 0); 7841 } 7842 } else 7843 # endif 7844 ret = get_errno(poll(pfd, nfds, timeout)); 7845 7846 if (!is_error(ret)) { 7847 for(i = 0; i < nfds; i++) { 7848 target_pfd[i].revents = tswap16(pfd[i].revents); 7849 } 7850 } 7851 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 7852 } 7853 break; 7854 #endif 7855 case TARGET_NR_flock: 7856 /* NOTE: the flock constant seems to be the same for every 7857 Linux platform */ 7858 ret = get_errno(flock(arg1, arg2)); 7859 break; 7860 case TARGET_NR_readv: 7861 { 7862 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 7863 if (vec != NULL) { 7864 ret = get_errno(readv(arg1, vec, arg3)); 7865 unlock_iovec(vec, arg2, arg3, 1); 7866 } else { 7867 ret = -host_to_target_errno(errno); 7868 } 7869 } 7870 break; 7871 case TARGET_NR_writev: 7872 { 7873 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 7874 if (vec != NULL) { 7875 ret = get_errno(writev(arg1, vec, arg3)); 7876 unlock_iovec(vec, arg2, arg3, 0); 7877 } else { 7878 ret = -host_to_target_errno(errno); 7879 } 7880 } 7881 break; 7882 case TARGET_NR_getsid: 7883 ret = get_errno(getsid(arg1)); 7884 break; 7885 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 7886 case TARGET_NR_fdatasync: 7887 ret = get_errno(fdatasync(arg1)); 7888 break; 7889 #endif 7890 #ifdef TARGET_NR__sysctl 7891 case TARGET_NR__sysctl: 7892 /* We don't implement this, but ENOTDIR is always a safe 7893 return value. */ 7894 ret = -TARGET_ENOTDIR; 7895 break; 7896 #endif 7897 case TARGET_NR_sched_getaffinity: 7898 { 7899 unsigned int mask_size; 7900 unsigned long *mask; 7901 7902 /* 7903 * sched_getaffinity needs multiples of ulong, so need to take 7904 * care of mismatches between target ulong and host ulong sizes. 7905 */ 7906 if (arg2 & (sizeof(abi_ulong) - 1)) { 7907 ret = -TARGET_EINVAL; 7908 break; 7909 } 7910 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 7911 7912 mask = alloca(mask_size); 7913 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 7914 7915 if (!is_error(ret)) { 7916 if (ret > arg2) { 7917 /* More data returned than the caller's buffer will fit. 7918 * This only happens if sizeof(abi_long) < sizeof(long) 7919 * and the caller passed us a buffer holding an odd number 7920 * of abi_longs. If the host kernel is actually using the 7921 * extra 4 bytes then fail EINVAL; otherwise we can just 7922 * ignore them and only copy the interesting part. 7923 */ 7924 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 7925 if (numcpus > arg2 * 8) { 7926 ret = -TARGET_EINVAL; 7927 break; 7928 } 7929 ret = arg2; 7930 } 7931 7932 if (copy_to_user(arg3, mask, ret)) { 7933 goto efault; 7934 } 7935 } 7936 } 7937 break; 7938 case TARGET_NR_sched_setaffinity: 7939 { 7940 unsigned int mask_size; 7941 unsigned long *mask; 7942 7943 /* 7944 * sched_setaffinity needs multiples of ulong, so need to take 7945 * care of mismatches between target ulong and host ulong sizes. 7946 */ 7947 if (arg2 & (sizeof(abi_ulong) - 1)) { 7948 ret = -TARGET_EINVAL; 7949 break; 7950 } 7951 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 7952 7953 mask = alloca(mask_size); 7954 if (!lock_user_struct(VERIFY_READ, p, arg3, 1)) { 7955 goto efault; 7956 } 7957 memcpy(mask, p, arg2); 7958 unlock_user_struct(p, arg2, 0); 7959 7960 ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 7961 } 7962 break; 7963 case TARGET_NR_sched_setparam: 7964 { 7965 struct sched_param *target_schp; 7966 struct sched_param schp; 7967 7968 if (arg2 == 0) { 7969 return -TARGET_EINVAL; 7970 } 7971 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) 7972 goto efault; 7973 schp.sched_priority = tswap32(target_schp->sched_priority); 7974 unlock_user_struct(target_schp, arg2, 0); 7975 ret = get_errno(sched_setparam(arg1, &schp)); 7976 } 7977 break; 7978 case TARGET_NR_sched_getparam: 7979 { 7980 struct sched_param *target_schp; 7981 struct sched_param schp; 7982 7983 if (arg2 == 0) { 7984 return -TARGET_EINVAL; 7985 } 7986 ret = get_errno(sched_getparam(arg1, &schp)); 7987 if (!is_error(ret)) { 7988 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) 7989 goto efault; 7990 target_schp->sched_priority = tswap32(schp.sched_priority); 7991 unlock_user_struct(target_schp, arg2, 1); 7992 } 7993 } 7994 break; 7995 case TARGET_NR_sched_setscheduler: 7996 { 7997 struct sched_param *target_schp; 7998 struct sched_param schp; 7999 if (arg3 == 0) { 8000 return -TARGET_EINVAL; 8001 } 8002 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) 8003 goto efault; 8004 schp.sched_priority = tswap32(target_schp->sched_priority); 8005 unlock_user_struct(target_schp, arg3, 0); 8006 ret = get_errno(sched_setscheduler(arg1, arg2, &schp)); 8007 } 8008 break; 8009 case TARGET_NR_sched_getscheduler: 8010 ret = get_errno(sched_getscheduler(arg1)); 8011 break; 8012 case TARGET_NR_sched_yield: 8013 ret = get_errno(sched_yield()); 8014 break; 8015 case TARGET_NR_sched_get_priority_max: 8016 ret = get_errno(sched_get_priority_max(arg1)); 8017 break; 8018 case TARGET_NR_sched_get_priority_min: 8019 ret = get_errno(sched_get_priority_min(arg1)); 8020 break; 8021 case TARGET_NR_sched_rr_get_interval: 8022 { 8023 struct timespec ts; 8024 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 8025 if (!is_error(ret)) { 8026 ret = host_to_target_timespec(arg2, &ts); 8027 } 8028 } 8029 break; 8030 case TARGET_NR_nanosleep: 8031 { 8032 struct timespec req, rem; 8033 target_to_host_timespec(&req, arg1); 8034 ret = get_errno(nanosleep(&req, &rem)); 8035 if (is_error(ret) && arg2) { 8036 host_to_target_timespec(arg2, &rem); 8037 } 8038 } 8039 break; 8040 #ifdef TARGET_NR_query_module 8041 case TARGET_NR_query_module: 8042 goto unimplemented; 8043 #endif 8044 #ifdef TARGET_NR_nfsservctl 8045 case TARGET_NR_nfsservctl: 8046 goto unimplemented; 8047 #endif 8048 case TARGET_NR_prctl: 8049 switch (arg1) { 8050 case PR_GET_PDEATHSIG: 8051 { 8052 int deathsig; 8053 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5)); 8054 if (!is_error(ret) && arg2 8055 && put_user_ual(deathsig, arg2)) { 8056 goto efault; 8057 } 8058 break; 8059 } 8060 #ifdef PR_GET_NAME 8061 case PR_GET_NAME: 8062 { 8063 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 8064 if (!name) { 8065 goto efault; 8066 } 8067 ret = get_errno(prctl(arg1, (unsigned long)name, 8068 arg3, arg4, arg5)); 8069 unlock_user(name, arg2, 16); 8070 break; 8071 } 8072 case PR_SET_NAME: 8073 { 8074 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 8075 if (!name) { 8076 goto efault; 8077 } 8078 ret = get_errno(prctl(arg1, (unsigned long)name, 8079 arg3, arg4, arg5)); 8080 unlock_user(name, arg2, 0); 8081 break; 8082 } 8083 #endif 8084 default: 8085 /* Most prctl options have no pointer arguments */ 8086 ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5)); 8087 break; 8088 } 8089 break; 8090 #ifdef TARGET_NR_arch_prctl 8091 case TARGET_NR_arch_prctl: 8092 #if defined(TARGET_I386) && !defined(TARGET_ABI32) 8093 ret = do_arch_prctl(cpu_env, arg1, arg2); 8094 break; 8095 #else 8096 goto unimplemented; 8097 #endif 8098 #endif 8099 #ifdef TARGET_NR_pread64 8100 case TARGET_NR_pread64: 8101 if (regpairs_aligned(cpu_env)) { 8102 arg4 = arg5; 8103 arg5 = arg6; 8104 } 8105 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8106 goto efault; 8107 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 8108 unlock_user(p, arg2, ret); 8109 break; 8110 case TARGET_NR_pwrite64: 8111 if (regpairs_aligned(cpu_env)) { 8112 arg4 = arg5; 8113 arg5 = arg6; 8114 } 8115 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8116 goto efault; 8117 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 8118 unlock_user(p, arg2, 0); 8119 break; 8120 #endif 8121 case TARGET_NR_getcwd: 8122 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 8123 goto efault; 8124 ret = get_errno(sys_getcwd1(p, arg2)); 8125 unlock_user(p, arg1, ret); 8126 break; 8127 case TARGET_NR_capget: 8128 case TARGET_NR_capset: 8129 { 8130 struct target_user_cap_header *target_header; 8131 struct target_user_cap_data *target_data = NULL; 8132 struct __user_cap_header_struct header; 8133 struct __user_cap_data_struct data[2]; 8134 struct __user_cap_data_struct *dataptr = NULL; 8135 int i, target_datalen; 8136 int data_items = 1; 8137 8138 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 8139 goto efault; 8140 } 8141 header.version = tswap32(target_header->version); 8142 header.pid = tswap32(target_header->pid); 8143 8144 if (header.version != _LINUX_CAPABILITY_VERSION) { 8145 /* Version 2 and up takes pointer to two user_data structs */ 8146 data_items = 2; 8147 } 8148 8149 target_datalen = sizeof(*target_data) * data_items; 8150 8151 if (arg2) { 8152 if (num == TARGET_NR_capget) { 8153 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 8154 } else { 8155 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 8156 } 8157 if (!target_data) { 8158 unlock_user_struct(target_header, arg1, 0); 8159 goto efault; 8160 } 8161 8162 if (num == TARGET_NR_capset) { 8163 for (i = 0; i < data_items; i++) { 8164 data[i].effective = tswap32(target_data[i].effective); 8165 data[i].permitted = tswap32(target_data[i].permitted); 8166 data[i].inheritable = tswap32(target_data[i].inheritable); 8167 } 8168 } 8169 8170 dataptr = data; 8171 } 8172 8173 if (num == TARGET_NR_capget) { 8174 ret = get_errno(capget(&header, dataptr)); 8175 } else { 8176 ret = get_errno(capset(&header, dataptr)); 8177 } 8178 8179 /* The kernel always updates version for both capget and capset */ 8180 target_header->version = tswap32(header.version); 8181 unlock_user_struct(target_header, arg1, 1); 8182 8183 if (arg2) { 8184 if (num == TARGET_NR_capget) { 8185 for (i = 0; i < data_items; i++) { 8186 target_data[i].effective = tswap32(data[i].effective); 8187 target_data[i].permitted = tswap32(data[i].permitted); 8188 target_data[i].inheritable = tswap32(data[i].inheritable); 8189 } 8190 unlock_user(target_data, arg2, target_datalen); 8191 } else { 8192 unlock_user(target_data, arg2, 0); 8193 } 8194 } 8195 break; 8196 } 8197 case TARGET_NR_sigaltstack: 8198 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_MIPS) || \ 8199 defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_ALPHA) || \ 8200 defined(TARGET_M68K) || defined(TARGET_S390X) || defined(TARGET_OPENRISC) 8201 ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env)); 8202 break; 8203 #else 8204 goto unimplemented; 8205 #endif 8206 8207 #ifdef CONFIG_SENDFILE 8208 case TARGET_NR_sendfile: 8209 { 8210 off_t *offp = NULL; 8211 off_t off; 8212 if (arg3) { 8213 ret = get_user_sal(off, arg3); 8214 if (is_error(ret)) { 8215 break; 8216 } 8217 offp = &off; 8218 } 8219 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 8220 if (!is_error(ret) && arg3) { 8221 abi_long ret2 = put_user_sal(off, arg3); 8222 if (is_error(ret2)) { 8223 ret = ret2; 8224 } 8225 } 8226 break; 8227 } 8228 #ifdef TARGET_NR_sendfile64 8229 case TARGET_NR_sendfile64: 8230 { 8231 off_t *offp = NULL; 8232 off_t off; 8233 if (arg3) { 8234 ret = get_user_s64(off, arg3); 8235 if (is_error(ret)) { 8236 break; 8237 } 8238 offp = &off; 8239 } 8240 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 8241 if (!is_error(ret) && arg3) { 8242 abi_long ret2 = put_user_s64(off, arg3); 8243 if (is_error(ret2)) { 8244 ret = ret2; 8245 } 8246 } 8247 break; 8248 } 8249 #endif 8250 #else 8251 case TARGET_NR_sendfile: 8252 #ifdef TARGET_NR_sendfile64 8253 case TARGET_NR_sendfile64: 8254 #endif 8255 goto unimplemented; 8256 #endif 8257 8258 #ifdef TARGET_NR_getpmsg 8259 case TARGET_NR_getpmsg: 8260 goto unimplemented; 8261 #endif 8262 #ifdef TARGET_NR_putpmsg 8263 case TARGET_NR_putpmsg: 8264 goto unimplemented; 8265 #endif 8266 #ifdef TARGET_NR_vfork 8267 case TARGET_NR_vfork: 8268 ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 8269 0, 0, 0, 0)); 8270 break; 8271 #endif 8272 #ifdef TARGET_NR_ugetrlimit 8273 case TARGET_NR_ugetrlimit: 8274 { 8275 struct rlimit rlim; 8276 int resource = target_to_host_resource(arg1); 8277 ret = get_errno(getrlimit(resource, &rlim)); 8278 if (!is_error(ret)) { 8279 struct target_rlimit *target_rlim; 8280 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 8281 goto efault; 8282 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 8283 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 8284 unlock_user_struct(target_rlim, arg2, 1); 8285 } 8286 break; 8287 } 8288 #endif 8289 #ifdef TARGET_NR_truncate64 8290 case TARGET_NR_truncate64: 8291 if (!(p = lock_user_string(arg1))) 8292 goto efault; 8293 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 8294 unlock_user(p, arg1, 0); 8295 break; 8296 #endif 8297 #ifdef TARGET_NR_ftruncate64 8298 case TARGET_NR_ftruncate64: 8299 ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 8300 break; 8301 #endif 8302 #ifdef TARGET_NR_stat64 8303 case TARGET_NR_stat64: 8304 if (!(p = lock_user_string(arg1))) 8305 goto efault; 8306 ret = get_errno(stat(path(p), &st)); 8307 unlock_user(p, arg1, 0); 8308 if (!is_error(ret)) 8309 ret = host_to_target_stat64(cpu_env, arg2, &st); 8310 break; 8311 #endif 8312 #ifdef TARGET_NR_lstat64 8313 case TARGET_NR_lstat64: 8314 if (!(p = lock_user_string(arg1))) 8315 goto efault; 8316 ret = get_errno(lstat(path(p), &st)); 8317 unlock_user(p, arg1, 0); 8318 if (!is_error(ret)) 8319 ret = host_to_target_stat64(cpu_env, arg2, &st); 8320 break; 8321 #endif 8322 #ifdef TARGET_NR_fstat64 8323 case TARGET_NR_fstat64: 8324 ret = get_errno(fstat(arg1, &st)); 8325 if (!is_error(ret)) 8326 ret = host_to_target_stat64(cpu_env, arg2, &st); 8327 break; 8328 #endif 8329 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 8330 #ifdef TARGET_NR_fstatat64 8331 case TARGET_NR_fstatat64: 8332 #endif 8333 #ifdef TARGET_NR_newfstatat 8334 case TARGET_NR_newfstatat: 8335 #endif 8336 if (!(p = lock_user_string(arg2))) 8337 goto efault; 8338 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 8339 if (!is_error(ret)) 8340 ret = host_to_target_stat64(cpu_env, arg3, &st); 8341 break; 8342 #endif 8343 #ifdef TARGET_NR_lchown 8344 case TARGET_NR_lchown: 8345 if (!(p = lock_user_string(arg1))) 8346 goto efault; 8347 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 8348 unlock_user(p, arg1, 0); 8349 break; 8350 #endif 8351 #ifdef TARGET_NR_getuid 8352 case TARGET_NR_getuid: 8353 ret = get_errno(high2lowuid(getuid())); 8354 break; 8355 #endif 8356 #ifdef TARGET_NR_getgid 8357 case TARGET_NR_getgid: 8358 ret = get_errno(high2lowgid(getgid())); 8359 break; 8360 #endif 8361 #ifdef TARGET_NR_geteuid 8362 case TARGET_NR_geteuid: 8363 ret = get_errno(high2lowuid(geteuid())); 8364 break; 8365 #endif 8366 #ifdef TARGET_NR_getegid 8367 case TARGET_NR_getegid: 8368 ret = get_errno(high2lowgid(getegid())); 8369 break; 8370 #endif 8371 case TARGET_NR_setreuid: 8372 ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 8373 break; 8374 case TARGET_NR_setregid: 8375 ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 8376 break; 8377 case TARGET_NR_getgroups: 8378 { 8379 int gidsetsize = arg1; 8380 target_id *target_grouplist; 8381 gid_t *grouplist; 8382 int i; 8383 8384 grouplist = alloca(gidsetsize * sizeof(gid_t)); 8385 ret = get_errno(getgroups(gidsetsize, grouplist)); 8386 if (gidsetsize == 0) 8387 break; 8388 if (!is_error(ret)) { 8389 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 8390 if (!target_grouplist) 8391 goto efault; 8392 for(i = 0;i < ret; i++) 8393 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 8394 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 8395 } 8396 } 8397 break; 8398 case TARGET_NR_setgroups: 8399 { 8400 int gidsetsize = arg1; 8401 target_id *target_grouplist; 8402 gid_t *grouplist = NULL; 8403 int i; 8404 if (gidsetsize) { 8405 grouplist = alloca(gidsetsize * sizeof(gid_t)); 8406 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 8407 if (!target_grouplist) { 8408 ret = -TARGET_EFAULT; 8409 goto fail; 8410 } 8411 for (i = 0; i < gidsetsize; i++) { 8412 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 8413 } 8414 unlock_user(target_grouplist, arg2, 0); 8415 } 8416 ret = get_errno(setgroups(gidsetsize, grouplist)); 8417 } 8418 break; 8419 case TARGET_NR_fchown: 8420 ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 8421 break; 8422 #if defined(TARGET_NR_fchownat) 8423 case TARGET_NR_fchownat: 8424 if (!(p = lock_user_string(arg2))) 8425 goto efault; 8426 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 8427 low2highgid(arg4), arg5)); 8428 unlock_user(p, arg2, 0); 8429 break; 8430 #endif 8431 #ifdef TARGET_NR_setresuid 8432 case TARGET_NR_setresuid: 8433 ret = get_errno(setresuid(low2highuid(arg1), 8434 low2highuid(arg2), 8435 low2highuid(arg3))); 8436 break; 8437 #endif 8438 #ifdef TARGET_NR_getresuid 8439 case TARGET_NR_getresuid: 8440 { 8441 uid_t ruid, euid, suid; 8442 ret = get_errno(getresuid(&ruid, &euid, &suid)); 8443 if (!is_error(ret)) { 8444 if (put_user_id(high2lowuid(ruid), arg1) 8445 || put_user_id(high2lowuid(euid), arg2) 8446 || put_user_id(high2lowuid(suid), arg3)) 8447 goto efault; 8448 } 8449 } 8450 break; 8451 #endif 8452 #ifdef TARGET_NR_getresgid 8453 case TARGET_NR_setresgid: 8454 ret = get_errno(setresgid(low2highgid(arg1), 8455 low2highgid(arg2), 8456 low2highgid(arg3))); 8457 break; 8458 #endif 8459 #ifdef TARGET_NR_getresgid 8460 case TARGET_NR_getresgid: 8461 { 8462 gid_t rgid, egid, sgid; 8463 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 8464 if (!is_error(ret)) { 8465 if (put_user_id(high2lowgid(rgid), arg1) 8466 || put_user_id(high2lowgid(egid), arg2) 8467 || put_user_id(high2lowgid(sgid), arg3)) 8468 goto efault; 8469 } 8470 } 8471 break; 8472 #endif 8473 #ifdef TARGET_NR_chown 8474 case TARGET_NR_chown: 8475 if (!(p = lock_user_string(arg1))) 8476 goto efault; 8477 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 8478 unlock_user(p, arg1, 0); 8479 break; 8480 #endif 8481 case TARGET_NR_setuid: 8482 ret = get_errno(setuid(low2highuid(arg1))); 8483 break; 8484 case TARGET_NR_setgid: 8485 ret = get_errno(setgid(low2highgid(arg1))); 8486 break; 8487 case TARGET_NR_setfsuid: 8488 ret = get_errno(setfsuid(arg1)); 8489 break; 8490 case TARGET_NR_setfsgid: 8491 ret = get_errno(setfsgid(arg1)); 8492 break; 8493 8494 #ifdef TARGET_NR_lchown32 8495 case TARGET_NR_lchown32: 8496 if (!(p = lock_user_string(arg1))) 8497 goto efault; 8498 ret = get_errno(lchown(p, arg2, arg3)); 8499 unlock_user(p, arg1, 0); 8500 break; 8501 #endif 8502 #ifdef TARGET_NR_getuid32 8503 case TARGET_NR_getuid32: 8504 ret = get_errno(getuid()); 8505 break; 8506 #endif 8507 8508 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 8509 /* Alpha specific */ 8510 case TARGET_NR_getxuid: 8511 { 8512 uid_t euid; 8513 euid=geteuid(); 8514 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; 8515 } 8516 ret = get_errno(getuid()); 8517 break; 8518 #endif 8519 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 8520 /* Alpha specific */ 8521 case TARGET_NR_getxgid: 8522 { 8523 uid_t egid; 8524 egid=getegid(); 8525 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; 8526 } 8527 ret = get_errno(getgid()); 8528 break; 8529 #endif 8530 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 8531 /* Alpha specific */ 8532 case TARGET_NR_osf_getsysinfo: 8533 ret = -TARGET_EOPNOTSUPP; 8534 switch (arg1) { 8535 case TARGET_GSI_IEEE_FP_CONTROL: 8536 { 8537 uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env); 8538 8539 /* Copied from linux ieee_fpcr_to_swcr. */ 8540 swcr = (fpcr >> 35) & SWCR_STATUS_MASK; 8541 swcr |= (fpcr >> 36) & SWCR_MAP_DMZ; 8542 swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV 8543 | SWCR_TRAP_ENABLE_DZE 8544 | SWCR_TRAP_ENABLE_OVF); 8545 swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF 8546 | SWCR_TRAP_ENABLE_INE); 8547 swcr |= (fpcr >> 47) & SWCR_MAP_UMZ; 8548 swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO; 8549 8550 if (put_user_u64 (swcr, arg2)) 8551 goto efault; 8552 ret = 0; 8553 } 8554 break; 8555 8556 /* case GSI_IEEE_STATE_AT_SIGNAL: 8557 -- Not implemented in linux kernel. 8558 case GSI_UACPROC: 8559 -- Retrieves current unaligned access state; not much used. 8560 case GSI_PROC_TYPE: 8561 -- Retrieves implver information; surely not used. 8562 case GSI_GET_HWRPB: 8563 -- Grabs a copy of the HWRPB; surely not used. 8564 */ 8565 } 8566 break; 8567 #endif 8568 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 8569 /* Alpha specific */ 8570 case TARGET_NR_osf_setsysinfo: 8571 ret = -TARGET_EOPNOTSUPP; 8572 switch (arg1) { 8573 case TARGET_SSI_IEEE_FP_CONTROL: 8574 { 8575 uint64_t swcr, fpcr, orig_fpcr; 8576 8577 if (get_user_u64 (swcr, arg2)) { 8578 goto efault; 8579 } 8580 orig_fpcr = cpu_alpha_load_fpcr(cpu_env); 8581 fpcr = orig_fpcr & FPCR_DYN_MASK; 8582 8583 /* Copied from linux ieee_swcr_to_fpcr. */ 8584 fpcr |= (swcr & SWCR_STATUS_MASK) << 35; 8585 fpcr |= (swcr & SWCR_MAP_DMZ) << 36; 8586 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV 8587 | SWCR_TRAP_ENABLE_DZE 8588 | SWCR_TRAP_ENABLE_OVF)) << 48; 8589 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF 8590 | SWCR_TRAP_ENABLE_INE)) << 57; 8591 fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0); 8592 fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41; 8593 8594 cpu_alpha_store_fpcr(cpu_env, fpcr); 8595 ret = 0; 8596 } 8597 break; 8598 8599 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 8600 { 8601 uint64_t exc, fpcr, orig_fpcr; 8602 int si_code; 8603 8604 if (get_user_u64(exc, arg2)) { 8605 goto efault; 8606 } 8607 8608 orig_fpcr = cpu_alpha_load_fpcr(cpu_env); 8609 8610 /* We only add to the exception status here. */ 8611 fpcr = orig_fpcr | ((exc & SWCR_STATUS_MASK) << 35); 8612 8613 cpu_alpha_store_fpcr(cpu_env, fpcr); 8614 ret = 0; 8615 8616 /* Old exceptions are not signaled. */ 8617 fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK); 8618 8619 /* If any exceptions set by this call, 8620 and are unmasked, send a signal. */ 8621 si_code = 0; 8622 if ((fpcr & (FPCR_INE | FPCR_INED)) == FPCR_INE) { 8623 si_code = TARGET_FPE_FLTRES; 8624 } 8625 if ((fpcr & (FPCR_UNF | FPCR_UNFD)) == FPCR_UNF) { 8626 si_code = TARGET_FPE_FLTUND; 8627 } 8628 if ((fpcr & (FPCR_OVF | FPCR_OVFD)) == FPCR_OVF) { 8629 si_code = TARGET_FPE_FLTOVF; 8630 } 8631 if ((fpcr & (FPCR_DZE | FPCR_DZED)) == FPCR_DZE) { 8632 si_code = TARGET_FPE_FLTDIV; 8633 } 8634 if ((fpcr & (FPCR_INV | FPCR_INVD)) == FPCR_INV) { 8635 si_code = TARGET_FPE_FLTINV; 8636 } 8637 if (si_code != 0) { 8638 target_siginfo_t info; 8639 info.si_signo = SIGFPE; 8640 info.si_errno = 0; 8641 info.si_code = si_code; 8642 info._sifields._sigfault._addr 8643 = ((CPUArchState *)cpu_env)->pc; 8644 queue_signal((CPUArchState *)cpu_env, info.si_signo, &info); 8645 } 8646 } 8647 break; 8648 8649 /* case SSI_NVPAIRS: 8650 -- Used with SSIN_UACPROC to enable unaligned accesses. 8651 case SSI_IEEE_STATE_AT_SIGNAL: 8652 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 8653 -- Not implemented in linux kernel 8654 */ 8655 } 8656 break; 8657 #endif 8658 #ifdef TARGET_NR_osf_sigprocmask 8659 /* Alpha specific. */ 8660 case TARGET_NR_osf_sigprocmask: 8661 { 8662 abi_ulong mask; 8663 int how; 8664 sigset_t set, oldset; 8665 8666 switch(arg1) { 8667 case TARGET_SIG_BLOCK: 8668 how = SIG_BLOCK; 8669 break; 8670 case TARGET_SIG_UNBLOCK: 8671 how = SIG_UNBLOCK; 8672 break; 8673 case TARGET_SIG_SETMASK: 8674 how = SIG_SETMASK; 8675 break; 8676 default: 8677 ret = -TARGET_EINVAL; 8678 goto fail; 8679 } 8680 mask = arg2; 8681 target_to_host_old_sigset(&set, &mask); 8682 do_sigprocmask(how, &set, &oldset); 8683 host_to_target_old_sigset(&mask, &oldset); 8684 ret = mask; 8685 } 8686 break; 8687 #endif 8688 8689 #ifdef TARGET_NR_getgid32 8690 case TARGET_NR_getgid32: 8691 ret = get_errno(getgid()); 8692 break; 8693 #endif 8694 #ifdef TARGET_NR_geteuid32 8695 case TARGET_NR_geteuid32: 8696 ret = get_errno(geteuid()); 8697 break; 8698 #endif 8699 #ifdef TARGET_NR_getegid32 8700 case TARGET_NR_getegid32: 8701 ret = get_errno(getegid()); 8702 break; 8703 #endif 8704 #ifdef TARGET_NR_setreuid32 8705 case TARGET_NR_setreuid32: 8706 ret = get_errno(setreuid(arg1, arg2)); 8707 break; 8708 #endif 8709 #ifdef TARGET_NR_setregid32 8710 case TARGET_NR_setregid32: 8711 ret = get_errno(setregid(arg1, arg2)); 8712 break; 8713 #endif 8714 #ifdef TARGET_NR_getgroups32 8715 case TARGET_NR_getgroups32: 8716 { 8717 int gidsetsize = arg1; 8718 uint32_t *target_grouplist; 8719 gid_t *grouplist; 8720 int i; 8721 8722 grouplist = alloca(gidsetsize * sizeof(gid_t)); 8723 ret = get_errno(getgroups(gidsetsize, grouplist)); 8724 if (gidsetsize == 0) 8725 break; 8726 if (!is_error(ret)) { 8727 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 8728 if (!target_grouplist) { 8729 ret = -TARGET_EFAULT; 8730 goto fail; 8731 } 8732 for(i = 0;i < ret; i++) 8733 target_grouplist[i] = tswap32(grouplist[i]); 8734 unlock_user(target_grouplist, arg2, gidsetsize * 4); 8735 } 8736 } 8737 break; 8738 #endif 8739 #ifdef TARGET_NR_setgroups32 8740 case TARGET_NR_setgroups32: 8741 { 8742 int gidsetsize = arg1; 8743 uint32_t *target_grouplist; 8744 gid_t *grouplist; 8745 int i; 8746 8747 grouplist = alloca(gidsetsize * sizeof(gid_t)); 8748 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 8749 if (!target_grouplist) { 8750 ret = -TARGET_EFAULT; 8751 goto fail; 8752 } 8753 for(i = 0;i < gidsetsize; i++) 8754 grouplist[i] = tswap32(target_grouplist[i]); 8755 unlock_user(target_grouplist, arg2, 0); 8756 ret = get_errno(setgroups(gidsetsize, grouplist)); 8757 } 8758 break; 8759 #endif 8760 #ifdef TARGET_NR_fchown32 8761 case TARGET_NR_fchown32: 8762 ret = get_errno(fchown(arg1, arg2, arg3)); 8763 break; 8764 #endif 8765 #ifdef TARGET_NR_setresuid32 8766 case TARGET_NR_setresuid32: 8767 ret = get_errno(setresuid(arg1, arg2, arg3)); 8768 break; 8769 #endif 8770 #ifdef TARGET_NR_getresuid32 8771 case TARGET_NR_getresuid32: 8772 { 8773 uid_t ruid, euid, suid; 8774 ret = get_errno(getresuid(&ruid, &euid, &suid)); 8775 if (!is_error(ret)) { 8776 if (put_user_u32(ruid, arg1) 8777 || put_user_u32(euid, arg2) 8778 || put_user_u32(suid, arg3)) 8779 goto efault; 8780 } 8781 } 8782 break; 8783 #endif 8784 #ifdef TARGET_NR_setresgid32 8785 case TARGET_NR_setresgid32: 8786 ret = get_errno(setresgid(arg1, arg2, arg3)); 8787 break; 8788 #endif 8789 #ifdef TARGET_NR_getresgid32 8790 case TARGET_NR_getresgid32: 8791 { 8792 gid_t rgid, egid, sgid; 8793 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 8794 if (!is_error(ret)) { 8795 if (put_user_u32(rgid, arg1) 8796 || put_user_u32(egid, arg2) 8797 || put_user_u32(sgid, arg3)) 8798 goto efault; 8799 } 8800 } 8801 break; 8802 #endif 8803 #ifdef TARGET_NR_chown32 8804 case TARGET_NR_chown32: 8805 if (!(p = lock_user_string(arg1))) 8806 goto efault; 8807 ret = get_errno(chown(p, arg2, arg3)); 8808 unlock_user(p, arg1, 0); 8809 break; 8810 #endif 8811 #ifdef TARGET_NR_setuid32 8812 case TARGET_NR_setuid32: 8813 ret = get_errno(setuid(arg1)); 8814 break; 8815 #endif 8816 #ifdef TARGET_NR_setgid32 8817 case TARGET_NR_setgid32: 8818 ret = get_errno(setgid(arg1)); 8819 break; 8820 #endif 8821 #ifdef TARGET_NR_setfsuid32 8822 case TARGET_NR_setfsuid32: 8823 ret = get_errno(setfsuid(arg1)); 8824 break; 8825 #endif 8826 #ifdef TARGET_NR_setfsgid32 8827 case TARGET_NR_setfsgid32: 8828 ret = get_errno(setfsgid(arg1)); 8829 break; 8830 #endif 8831 8832 case TARGET_NR_pivot_root: 8833 goto unimplemented; 8834 #ifdef TARGET_NR_mincore 8835 case TARGET_NR_mincore: 8836 { 8837 void *a; 8838 ret = -TARGET_EFAULT; 8839 if (!(a = lock_user(VERIFY_READ, arg1,arg2, 0))) 8840 goto efault; 8841 if (!(p = lock_user_string(arg3))) 8842 goto mincore_fail; 8843 ret = get_errno(mincore(a, arg2, p)); 8844 unlock_user(p, arg3, ret); 8845 mincore_fail: 8846 unlock_user(a, arg1, 0); 8847 } 8848 break; 8849 #endif 8850 #ifdef TARGET_NR_arm_fadvise64_64 8851 case TARGET_NR_arm_fadvise64_64: 8852 { 8853 /* 8854 * arm_fadvise64_64 looks like fadvise64_64 but 8855 * with different argument order 8856 */ 8857 abi_long temp; 8858 temp = arg3; 8859 arg3 = arg4; 8860 arg4 = temp; 8861 } 8862 #endif 8863 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_arm_fadvise64_64) || defined(TARGET_NR_fadvise64) 8864 #ifdef TARGET_NR_fadvise64_64 8865 case TARGET_NR_fadvise64_64: 8866 #endif 8867 #ifdef TARGET_NR_fadvise64 8868 case TARGET_NR_fadvise64: 8869 #endif 8870 #ifdef TARGET_S390X 8871 switch (arg4) { 8872 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 8873 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 8874 case 6: arg4 = POSIX_FADV_DONTNEED; break; 8875 case 7: arg4 = POSIX_FADV_NOREUSE; break; 8876 default: break; 8877 } 8878 #endif 8879 ret = -posix_fadvise(arg1, arg2, arg3, arg4); 8880 break; 8881 #endif 8882 #ifdef TARGET_NR_madvise 8883 case TARGET_NR_madvise: 8884 /* A straight passthrough may not be safe because qemu sometimes 8885 turns private file-backed mappings into anonymous mappings. 8886 This will break MADV_DONTNEED. 8887 This is a hint, so ignoring and returning success is ok. */ 8888 ret = get_errno(0); 8889 break; 8890 #endif 8891 #if TARGET_ABI_BITS == 32 8892 case TARGET_NR_fcntl64: 8893 { 8894 int cmd; 8895 struct flock64 fl; 8896 struct target_flock64 *target_fl; 8897 #ifdef TARGET_ARM 8898 struct target_eabi_flock64 *target_efl; 8899 #endif 8900 8901 cmd = target_to_host_fcntl_cmd(arg2); 8902 if (cmd == -TARGET_EINVAL) { 8903 ret = cmd; 8904 break; 8905 } 8906 8907 switch(arg2) { 8908 case TARGET_F_GETLK64: 8909 #ifdef TARGET_ARM 8910 if (((CPUARMState *)cpu_env)->eabi) { 8911 if (!lock_user_struct(VERIFY_READ, target_efl, arg3, 1)) 8912 goto efault; 8913 fl.l_type = tswap16(target_efl->l_type); 8914 fl.l_whence = tswap16(target_efl->l_whence); 8915 fl.l_start = tswap64(target_efl->l_start); 8916 fl.l_len = tswap64(target_efl->l_len); 8917 fl.l_pid = tswap32(target_efl->l_pid); 8918 unlock_user_struct(target_efl, arg3, 0); 8919 } else 8920 #endif 8921 { 8922 if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) 8923 goto efault; 8924 fl.l_type = tswap16(target_fl->l_type); 8925 fl.l_whence = tswap16(target_fl->l_whence); 8926 fl.l_start = tswap64(target_fl->l_start); 8927 fl.l_len = tswap64(target_fl->l_len); 8928 fl.l_pid = tswap32(target_fl->l_pid); 8929 unlock_user_struct(target_fl, arg3, 0); 8930 } 8931 ret = get_errno(fcntl(arg1, cmd, &fl)); 8932 if (ret == 0) { 8933 #ifdef TARGET_ARM 8934 if (((CPUARMState *)cpu_env)->eabi) { 8935 if (!lock_user_struct(VERIFY_WRITE, target_efl, arg3, 0)) 8936 goto efault; 8937 target_efl->l_type = tswap16(fl.l_type); 8938 target_efl->l_whence = tswap16(fl.l_whence); 8939 target_efl->l_start = tswap64(fl.l_start); 8940 target_efl->l_len = tswap64(fl.l_len); 8941 target_efl->l_pid = tswap32(fl.l_pid); 8942 unlock_user_struct(target_efl, arg3, 1); 8943 } else 8944 #endif 8945 { 8946 if (!lock_user_struct(VERIFY_WRITE, target_fl, arg3, 0)) 8947 goto efault; 8948 target_fl->l_type = tswap16(fl.l_type); 8949 target_fl->l_whence = tswap16(fl.l_whence); 8950 target_fl->l_start = tswap64(fl.l_start); 8951 target_fl->l_len = tswap64(fl.l_len); 8952 target_fl->l_pid = tswap32(fl.l_pid); 8953 unlock_user_struct(target_fl, arg3, 1); 8954 } 8955 } 8956 break; 8957 8958 case TARGET_F_SETLK64: 8959 case TARGET_F_SETLKW64: 8960 #ifdef TARGET_ARM 8961 if (((CPUARMState *)cpu_env)->eabi) { 8962 if (!lock_user_struct(VERIFY_READ, target_efl, arg3, 1)) 8963 goto efault; 8964 fl.l_type = tswap16(target_efl->l_type); 8965 fl.l_whence = tswap16(target_efl->l_whence); 8966 fl.l_start = tswap64(target_efl->l_start); 8967 fl.l_len = tswap64(target_efl->l_len); 8968 fl.l_pid = tswap32(target_efl->l_pid); 8969 unlock_user_struct(target_efl, arg3, 0); 8970 } else 8971 #endif 8972 { 8973 if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) 8974 goto efault; 8975 fl.l_type = tswap16(target_fl->l_type); 8976 fl.l_whence = tswap16(target_fl->l_whence); 8977 fl.l_start = tswap64(target_fl->l_start); 8978 fl.l_len = tswap64(target_fl->l_len); 8979 fl.l_pid = tswap32(target_fl->l_pid); 8980 unlock_user_struct(target_fl, arg3, 0); 8981 } 8982 ret = get_errno(fcntl(arg1, cmd, &fl)); 8983 break; 8984 default: 8985 ret = do_fcntl(arg1, arg2, arg3); 8986 break; 8987 } 8988 break; 8989 } 8990 #endif 8991 #ifdef TARGET_NR_cacheflush 8992 case TARGET_NR_cacheflush: 8993 /* self-modifying code is handled automatically, so nothing needed */ 8994 ret = 0; 8995 break; 8996 #endif 8997 #ifdef TARGET_NR_security 8998 case TARGET_NR_security: 8999 goto unimplemented; 9000 #endif 9001 #ifdef TARGET_NR_getpagesize 9002 case TARGET_NR_getpagesize: 9003 ret = TARGET_PAGE_SIZE; 9004 break; 9005 #endif 9006 case TARGET_NR_gettid: 9007 ret = get_errno(gettid()); 9008 break; 9009 #ifdef TARGET_NR_readahead 9010 case TARGET_NR_readahead: 9011 #if TARGET_ABI_BITS == 32 9012 if (regpairs_aligned(cpu_env)) { 9013 arg2 = arg3; 9014 arg3 = arg4; 9015 arg4 = arg5; 9016 } 9017 ret = get_errno(readahead(arg1, ((off64_t)arg3 << 32) | arg2, arg4)); 9018 #else 9019 ret = get_errno(readahead(arg1, arg2, arg3)); 9020 #endif 9021 break; 9022 #endif 9023 #ifdef CONFIG_ATTR 9024 #ifdef TARGET_NR_setxattr 9025 case TARGET_NR_listxattr: 9026 case TARGET_NR_llistxattr: 9027 { 9028 void *p, *b = 0; 9029 if (arg2) { 9030 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9031 if (!b) { 9032 ret = -TARGET_EFAULT; 9033 break; 9034 } 9035 } 9036 p = lock_user_string(arg1); 9037 if (p) { 9038 if (num == TARGET_NR_listxattr) { 9039 ret = get_errno(listxattr(p, b, arg3)); 9040 } else { 9041 ret = get_errno(llistxattr(p, b, arg3)); 9042 } 9043 } else { 9044 ret = -TARGET_EFAULT; 9045 } 9046 unlock_user(p, arg1, 0); 9047 unlock_user(b, arg2, arg3); 9048 break; 9049 } 9050 case TARGET_NR_flistxattr: 9051 { 9052 void *b = 0; 9053 if (arg2) { 9054 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9055 if (!b) { 9056 ret = -TARGET_EFAULT; 9057 break; 9058 } 9059 } 9060 ret = get_errno(flistxattr(arg1, b, arg3)); 9061 unlock_user(b, arg2, arg3); 9062 break; 9063 } 9064 case TARGET_NR_setxattr: 9065 case TARGET_NR_lsetxattr: 9066 { 9067 void *p, *n, *v = 0; 9068 if (arg3) { 9069 v = lock_user(VERIFY_READ, arg3, arg4, 1); 9070 if (!v) { 9071 ret = -TARGET_EFAULT; 9072 break; 9073 } 9074 } 9075 p = lock_user_string(arg1); 9076 n = lock_user_string(arg2); 9077 if (p && n) { 9078 if (num == TARGET_NR_setxattr) { 9079 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 9080 } else { 9081 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 9082 } 9083 } else { 9084 ret = -TARGET_EFAULT; 9085 } 9086 unlock_user(p, arg1, 0); 9087 unlock_user(n, arg2, 0); 9088 unlock_user(v, arg3, 0); 9089 } 9090 break; 9091 case TARGET_NR_fsetxattr: 9092 { 9093 void *n, *v = 0; 9094 if (arg3) { 9095 v = lock_user(VERIFY_READ, arg3, arg4, 1); 9096 if (!v) { 9097 ret = -TARGET_EFAULT; 9098 break; 9099 } 9100 } 9101 n = lock_user_string(arg2); 9102 if (n) { 9103 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 9104 } else { 9105 ret = -TARGET_EFAULT; 9106 } 9107 unlock_user(n, arg2, 0); 9108 unlock_user(v, arg3, 0); 9109 } 9110 break; 9111 case TARGET_NR_getxattr: 9112 case TARGET_NR_lgetxattr: 9113 { 9114 void *p, *n, *v = 0; 9115 if (arg3) { 9116 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9117 if (!v) { 9118 ret = -TARGET_EFAULT; 9119 break; 9120 } 9121 } 9122 p = lock_user_string(arg1); 9123 n = lock_user_string(arg2); 9124 if (p && n) { 9125 if (num == TARGET_NR_getxattr) { 9126 ret = get_errno(getxattr(p, n, v, arg4)); 9127 } else { 9128 ret = get_errno(lgetxattr(p, n, v, arg4)); 9129 } 9130 } else { 9131 ret = -TARGET_EFAULT; 9132 } 9133 unlock_user(p, arg1, 0); 9134 unlock_user(n, arg2, 0); 9135 unlock_user(v, arg3, arg4); 9136 } 9137 break; 9138 case TARGET_NR_fgetxattr: 9139 { 9140 void *n, *v = 0; 9141 if (arg3) { 9142 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9143 if (!v) { 9144 ret = -TARGET_EFAULT; 9145 break; 9146 } 9147 } 9148 n = lock_user_string(arg2); 9149 if (n) { 9150 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 9151 } else { 9152 ret = -TARGET_EFAULT; 9153 } 9154 unlock_user(n, arg2, 0); 9155 unlock_user(v, arg3, arg4); 9156 } 9157 break; 9158 case TARGET_NR_removexattr: 9159 case TARGET_NR_lremovexattr: 9160 { 9161 void *p, *n; 9162 p = lock_user_string(arg1); 9163 n = lock_user_string(arg2); 9164 if (p && n) { 9165 if (num == TARGET_NR_removexattr) { 9166 ret = get_errno(removexattr(p, n)); 9167 } else { 9168 ret = get_errno(lremovexattr(p, n)); 9169 } 9170 } else { 9171 ret = -TARGET_EFAULT; 9172 } 9173 unlock_user(p, arg1, 0); 9174 unlock_user(n, arg2, 0); 9175 } 9176 break; 9177 case TARGET_NR_fremovexattr: 9178 { 9179 void *n; 9180 n = lock_user_string(arg2); 9181 if (n) { 9182 ret = get_errno(fremovexattr(arg1, n)); 9183 } else { 9184 ret = -TARGET_EFAULT; 9185 } 9186 unlock_user(n, arg2, 0); 9187 } 9188 break; 9189 #endif 9190 #endif /* CONFIG_ATTR */ 9191 #ifdef TARGET_NR_set_thread_area 9192 case TARGET_NR_set_thread_area: 9193 #if defined(TARGET_MIPS) 9194 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; 9195 ret = 0; 9196 break; 9197 #elif defined(TARGET_CRIS) 9198 if (arg1 & 0xff) 9199 ret = -TARGET_EINVAL; 9200 else { 9201 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; 9202 ret = 0; 9203 } 9204 break; 9205 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 9206 ret = do_set_thread_area(cpu_env, arg1); 9207 break; 9208 #elif defined(TARGET_M68K) 9209 { 9210 TaskState *ts = cpu->opaque; 9211 ts->tp_value = arg1; 9212 ret = 0; 9213 break; 9214 } 9215 #else 9216 goto unimplemented_nowarn; 9217 #endif 9218 #endif 9219 #ifdef TARGET_NR_get_thread_area 9220 case TARGET_NR_get_thread_area: 9221 #if defined(TARGET_I386) && defined(TARGET_ABI32) 9222 ret = do_get_thread_area(cpu_env, arg1); 9223 break; 9224 #elif defined(TARGET_M68K) 9225 { 9226 TaskState *ts = cpu->opaque; 9227 ret = ts->tp_value; 9228 break; 9229 } 9230 #else 9231 goto unimplemented_nowarn; 9232 #endif 9233 #endif 9234 #ifdef TARGET_NR_getdomainname 9235 case TARGET_NR_getdomainname: 9236 goto unimplemented_nowarn; 9237 #endif 9238 9239 #ifdef TARGET_NR_clock_gettime 9240 case TARGET_NR_clock_gettime: 9241 { 9242 struct timespec ts; 9243 ret = get_errno(clock_gettime(arg1, &ts)); 9244 if (!is_error(ret)) { 9245 host_to_target_timespec(arg2, &ts); 9246 } 9247 break; 9248 } 9249 #endif 9250 #ifdef TARGET_NR_clock_getres 9251 case TARGET_NR_clock_getres: 9252 { 9253 struct timespec ts; 9254 ret = get_errno(clock_getres(arg1, &ts)); 9255 if (!is_error(ret)) { 9256 host_to_target_timespec(arg2, &ts); 9257 } 9258 break; 9259 } 9260 #endif 9261 #ifdef TARGET_NR_clock_nanosleep 9262 case TARGET_NR_clock_nanosleep: 9263 { 9264 struct timespec ts; 9265 target_to_host_timespec(&ts, arg3); 9266 ret = get_errno(clock_nanosleep(arg1, arg2, &ts, arg4 ? &ts : NULL)); 9267 if (arg4) 9268 host_to_target_timespec(arg4, &ts); 9269 9270 #if defined(TARGET_PPC) 9271 /* clock_nanosleep is odd in that it returns positive errno values. 9272 * On PPC, CR0 bit 3 should be set in such a situation. */ 9273 if (ret) { 9274 ((CPUPPCState *)cpu_env)->crf[0] |= 1; 9275 } 9276 #endif 9277 break; 9278 } 9279 #endif 9280 9281 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 9282 case TARGET_NR_set_tid_address: 9283 ret = get_errno(set_tid_address((int *)g2h(arg1))); 9284 break; 9285 #endif 9286 9287 #if defined(TARGET_NR_tkill) && defined(__NR_tkill) 9288 case TARGET_NR_tkill: 9289 ret = get_errno(sys_tkill((int)arg1, target_to_host_signal(arg2))); 9290 break; 9291 #endif 9292 9293 #if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) 9294 case TARGET_NR_tgkill: 9295 ret = get_errno(sys_tgkill((int)arg1, (int)arg2, 9296 target_to_host_signal(arg3))); 9297 break; 9298 #endif 9299 9300 #ifdef TARGET_NR_set_robust_list 9301 case TARGET_NR_set_robust_list: 9302 case TARGET_NR_get_robust_list: 9303 /* The ABI for supporting robust futexes has userspace pass 9304 * the kernel a pointer to a linked list which is updated by 9305 * userspace after the syscall; the list is walked by the kernel 9306 * when the thread exits. Since the linked list in QEMU guest 9307 * memory isn't a valid linked list for the host and we have 9308 * no way to reliably intercept the thread-death event, we can't 9309 * support these. Silently return ENOSYS so that guest userspace 9310 * falls back to a non-robust futex implementation (which should 9311 * be OK except in the corner case of the guest crashing while 9312 * holding a mutex that is shared with another process via 9313 * shared memory). 9314 */ 9315 goto unimplemented_nowarn; 9316 #endif 9317 9318 #if defined(TARGET_NR_utimensat) 9319 case TARGET_NR_utimensat: 9320 { 9321 struct timespec *tsp, ts[2]; 9322 if (!arg3) { 9323 tsp = NULL; 9324 } else { 9325 target_to_host_timespec(ts, arg3); 9326 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec)); 9327 tsp = ts; 9328 } 9329 if (!arg2) 9330 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 9331 else { 9332 if (!(p = lock_user_string(arg2))) { 9333 ret = -TARGET_EFAULT; 9334 goto fail; 9335 } 9336 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 9337 unlock_user(p, arg2, 0); 9338 } 9339 } 9340 break; 9341 #endif 9342 case TARGET_NR_futex: 9343 ret = do_futex(arg1, arg2, arg3, arg4, arg5, arg6); 9344 break; 9345 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 9346 case TARGET_NR_inotify_init: 9347 ret = get_errno(sys_inotify_init()); 9348 break; 9349 #endif 9350 #ifdef CONFIG_INOTIFY1 9351 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 9352 case TARGET_NR_inotify_init1: 9353 ret = get_errno(sys_inotify_init1(arg1)); 9354 break; 9355 #endif 9356 #endif 9357 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 9358 case TARGET_NR_inotify_add_watch: 9359 p = lock_user_string(arg2); 9360 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); 9361 unlock_user(p, arg2, 0); 9362 break; 9363 #endif 9364 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 9365 case TARGET_NR_inotify_rm_watch: 9366 ret = get_errno(sys_inotify_rm_watch(arg1, arg2)); 9367 break; 9368 #endif 9369 9370 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 9371 case TARGET_NR_mq_open: 9372 { 9373 struct mq_attr posix_mq_attr, *attrp; 9374 9375 p = lock_user_string(arg1 - 1); 9376 if (arg4 != 0) { 9377 copy_from_user_mq_attr (&posix_mq_attr, arg4); 9378 attrp = &posix_mq_attr; 9379 } else { 9380 attrp = 0; 9381 } 9382 ret = get_errno(mq_open(p, arg2, arg3, attrp)); 9383 unlock_user (p, arg1, 0); 9384 } 9385 break; 9386 9387 case TARGET_NR_mq_unlink: 9388 p = lock_user_string(arg1 - 1); 9389 ret = get_errno(mq_unlink(p)); 9390 unlock_user (p, arg1, 0); 9391 break; 9392 9393 case TARGET_NR_mq_timedsend: 9394 { 9395 struct timespec ts; 9396 9397 p = lock_user (VERIFY_READ, arg2, arg3, 1); 9398 if (arg5 != 0) { 9399 target_to_host_timespec(&ts, arg5); 9400 ret = get_errno(mq_timedsend(arg1, p, arg3, arg4, &ts)); 9401 host_to_target_timespec(arg5, &ts); 9402 } 9403 else 9404 ret = get_errno(mq_send(arg1, p, arg3, arg4)); 9405 unlock_user (p, arg2, arg3); 9406 } 9407 break; 9408 9409 case TARGET_NR_mq_timedreceive: 9410 { 9411 struct timespec ts; 9412 unsigned int prio; 9413 9414 p = lock_user (VERIFY_READ, arg2, arg3, 1); 9415 if (arg5 != 0) { 9416 target_to_host_timespec(&ts, arg5); 9417 ret = get_errno(mq_timedreceive(arg1, p, arg3, &prio, &ts)); 9418 host_to_target_timespec(arg5, &ts); 9419 } 9420 else 9421 ret = get_errno(mq_receive(arg1, p, arg3, &prio)); 9422 unlock_user (p, arg2, arg3); 9423 if (arg4 != 0) 9424 put_user_u32(prio, arg4); 9425 } 9426 break; 9427 9428 /* Not implemented for now... */ 9429 /* case TARGET_NR_mq_notify: */ 9430 /* break; */ 9431 9432 case TARGET_NR_mq_getsetattr: 9433 { 9434 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 9435 ret = 0; 9436 if (arg3 != 0) { 9437 ret = mq_getattr(arg1, &posix_mq_attr_out); 9438 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 9439 } 9440 if (arg2 != 0) { 9441 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 9442 ret |= mq_setattr(arg1, &posix_mq_attr_in, &posix_mq_attr_out); 9443 } 9444 9445 } 9446 break; 9447 #endif 9448 9449 #ifdef CONFIG_SPLICE 9450 #ifdef TARGET_NR_tee 9451 case TARGET_NR_tee: 9452 { 9453 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 9454 } 9455 break; 9456 #endif 9457 #ifdef TARGET_NR_splice 9458 case TARGET_NR_splice: 9459 { 9460 loff_t loff_in, loff_out; 9461 loff_t *ploff_in = NULL, *ploff_out = NULL; 9462 if (arg2) { 9463 if (get_user_u64(loff_in, arg2)) { 9464 goto efault; 9465 } 9466 ploff_in = &loff_in; 9467 } 9468 if (arg4) { 9469 if (get_user_u64(loff_out, arg4)) { 9470 goto efault; 9471 } 9472 ploff_out = &loff_out; 9473 } 9474 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 9475 if (arg2) { 9476 if (put_user_u64(loff_in, arg2)) { 9477 goto efault; 9478 } 9479 } 9480 if (arg4) { 9481 if (put_user_u64(loff_out, arg4)) { 9482 goto efault; 9483 } 9484 } 9485 } 9486 break; 9487 #endif 9488 #ifdef TARGET_NR_vmsplice 9489 case TARGET_NR_vmsplice: 9490 { 9491 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 9492 if (vec != NULL) { 9493 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 9494 unlock_iovec(vec, arg2, arg3, 0); 9495 } else { 9496 ret = -host_to_target_errno(errno); 9497 } 9498 } 9499 break; 9500 #endif 9501 #endif /* CONFIG_SPLICE */ 9502 #ifdef CONFIG_EVENTFD 9503 #if defined(TARGET_NR_eventfd) 9504 case TARGET_NR_eventfd: 9505 ret = get_errno(eventfd(arg1, 0)); 9506 break; 9507 #endif 9508 #if defined(TARGET_NR_eventfd2) 9509 case TARGET_NR_eventfd2: 9510 { 9511 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)); 9512 if (arg2 & TARGET_O_NONBLOCK) { 9513 host_flags |= O_NONBLOCK; 9514 } 9515 if (arg2 & TARGET_O_CLOEXEC) { 9516 host_flags |= O_CLOEXEC; 9517 } 9518 ret = get_errno(eventfd(arg1, host_flags)); 9519 break; 9520 } 9521 #endif 9522 #endif /* CONFIG_EVENTFD */ 9523 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 9524 case TARGET_NR_fallocate: 9525 #if TARGET_ABI_BITS == 32 9526 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 9527 target_offset64(arg5, arg6))); 9528 #else 9529 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 9530 #endif 9531 break; 9532 #endif 9533 #if defined(CONFIG_SYNC_FILE_RANGE) 9534 #if defined(TARGET_NR_sync_file_range) 9535 case TARGET_NR_sync_file_range: 9536 #if TARGET_ABI_BITS == 32 9537 #if defined(TARGET_MIPS) 9538 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 9539 target_offset64(arg5, arg6), arg7)); 9540 #else 9541 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 9542 target_offset64(arg4, arg5), arg6)); 9543 #endif /* !TARGET_MIPS */ 9544 #else 9545 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 9546 #endif 9547 break; 9548 #endif 9549 #if defined(TARGET_NR_sync_file_range2) 9550 case TARGET_NR_sync_file_range2: 9551 /* This is like sync_file_range but the arguments are reordered */ 9552 #if TARGET_ABI_BITS == 32 9553 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 9554 target_offset64(arg5, arg6), arg2)); 9555 #else 9556 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 9557 #endif 9558 break; 9559 #endif 9560 #endif 9561 #if defined(CONFIG_EPOLL) 9562 #if defined(TARGET_NR_epoll_create) 9563 case TARGET_NR_epoll_create: 9564 ret = get_errno(epoll_create(arg1)); 9565 break; 9566 #endif 9567 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 9568 case TARGET_NR_epoll_create1: 9569 ret = get_errno(epoll_create1(arg1)); 9570 break; 9571 #endif 9572 #if defined(TARGET_NR_epoll_ctl) 9573 case TARGET_NR_epoll_ctl: 9574 { 9575 struct epoll_event ep; 9576 struct epoll_event *epp = 0; 9577 if (arg4) { 9578 struct target_epoll_event *target_ep; 9579 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 9580 goto efault; 9581 } 9582 ep.events = tswap32(target_ep->events); 9583 /* The epoll_data_t union is just opaque data to the kernel, 9584 * so we transfer all 64 bits across and need not worry what 9585 * actual data type it is. 9586 */ 9587 ep.data.u64 = tswap64(target_ep->data.u64); 9588 unlock_user_struct(target_ep, arg4, 0); 9589 epp = &ep; 9590 } 9591 ret = get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 9592 break; 9593 } 9594 #endif 9595 9596 #if defined(TARGET_NR_epoll_pwait) && defined(CONFIG_EPOLL_PWAIT) 9597 #define IMPLEMENT_EPOLL_PWAIT 9598 #endif 9599 #if defined(TARGET_NR_epoll_wait) || defined(IMPLEMENT_EPOLL_PWAIT) 9600 #if defined(TARGET_NR_epoll_wait) 9601 case TARGET_NR_epoll_wait: 9602 #endif 9603 #if defined(IMPLEMENT_EPOLL_PWAIT) 9604 case TARGET_NR_epoll_pwait: 9605 #endif 9606 { 9607 struct target_epoll_event *target_ep; 9608 struct epoll_event *ep; 9609 int epfd = arg1; 9610 int maxevents = arg3; 9611 int timeout = arg4; 9612 9613 target_ep = lock_user(VERIFY_WRITE, arg2, 9614 maxevents * sizeof(struct target_epoll_event), 1); 9615 if (!target_ep) { 9616 goto efault; 9617 } 9618 9619 ep = alloca(maxevents * sizeof(struct epoll_event)); 9620 9621 switch (num) { 9622 #if defined(IMPLEMENT_EPOLL_PWAIT) 9623 case TARGET_NR_epoll_pwait: 9624 { 9625 target_sigset_t *target_set; 9626 sigset_t _set, *set = &_set; 9627 9628 if (arg5) { 9629 target_set = lock_user(VERIFY_READ, arg5, 9630 sizeof(target_sigset_t), 1); 9631 if (!target_set) { 9632 unlock_user(target_ep, arg2, 0); 9633 goto efault; 9634 } 9635 target_to_host_sigset(set, target_set); 9636 unlock_user(target_set, arg5, 0); 9637 } else { 9638 set = NULL; 9639 } 9640 9641 ret = get_errno(epoll_pwait(epfd, ep, maxevents, timeout, set)); 9642 break; 9643 } 9644 #endif 9645 #if defined(TARGET_NR_epoll_wait) 9646 case TARGET_NR_epoll_wait: 9647 ret = get_errno(epoll_wait(epfd, ep, maxevents, timeout)); 9648 break; 9649 #endif 9650 default: 9651 ret = -TARGET_ENOSYS; 9652 } 9653 if (!is_error(ret)) { 9654 int i; 9655 for (i = 0; i < ret; i++) { 9656 target_ep[i].events = tswap32(ep[i].events); 9657 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 9658 } 9659 } 9660 unlock_user(target_ep, arg2, ret * sizeof(struct target_epoll_event)); 9661 break; 9662 } 9663 #endif 9664 #endif 9665 #ifdef TARGET_NR_prlimit64 9666 case TARGET_NR_prlimit64: 9667 { 9668 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 9669 struct target_rlimit64 *target_rnew, *target_rold; 9670 struct host_rlimit64 rnew, rold, *rnewp = 0; 9671 int resource = target_to_host_resource(arg2); 9672 if (arg3) { 9673 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 9674 goto efault; 9675 } 9676 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 9677 rnew.rlim_max = tswap64(target_rnew->rlim_max); 9678 unlock_user_struct(target_rnew, arg3, 0); 9679 rnewp = &rnew; 9680 } 9681 9682 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 9683 if (!is_error(ret) && arg4) { 9684 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 9685 goto efault; 9686 } 9687 target_rold->rlim_cur = tswap64(rold.rlim_cur); 9688 target_rold->rlim_max = tswap64(rold.rlim_max); 9689 unlock_user_struct(target_rold, arg4, 1); 9690 } 9691 break; 9692 } 9693 #endif 9694 #ifdef TARGET_NR_gethostname 9695 case TARGET_NR_gethostname: 9696 { 9697 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 9698 if (name) { 9699 ret = get_errno(gethostname(name, arg2)); 9700 unlock_user(name, arg1, arg2); 9701 } else { 9702 ret = -TARGET_EFAULT; 9703 } 9704 break; 9705 } 9706 #endif 9707 #ifdef TARGET_NR_atomic_cmpxchg_32 9708 case TARGET_NR_atomic_cmpxchg_32: 9709 { 9710 /* should use start_exclusive from main.c */ 9711 abi_ulong mem_value; 9712 if (get_user_u32(mem_value, arg6)) { 9713 target_siginfo_t info; 9714 info.si_signo = SIGSEGV; 9715 info.si_errno = 0; 9716 info.si_code = TARGET_SEGV_MAPERR; 9717 info._sifields._sigfault._addr = arg6; 9718 queue_signal((CPUArchState *)cpu_env, info.si_signo, &info); 9719 ret = 0xdeadbeef; 9720 9721 } 9722 if (mem_value == arg2) 9723 put_user_u32(arg1, arg6); 9724 ret = mem_value; 9725 break; 9726 } 9727 #endif 9728 #ifdef TARGET_NR_atomic_barrier 9729 case TARGET_NR_atomic_barrier: 9730 { 9731 /* Like the kernel implementation and the qemu arm barrier, no-op this? */ 9732 ret = 0; 9733 break; 9734 } 9735 #endif 9736 9737 #ifdef TARGET_NR_timer_create 9738 case TARGET_NR_timer_create: 9739 { 9740 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 9741 9742 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 9743 9744 int clkid = arg1; 9745 int timer_index = next_free_host_timer(); 9746 9747 if (timer_index < 0) { 9748 ret = -TARGET_EAGAIN; 9749 } else { 9750 timer_t *phtimer = g_posix_timers + timer_index; 9751 9752 if (arg2) { 9753 phost_sevp = &host_sevp; 9754 ret = target_to_host_sigevent(phost_sevp, arg2); 9755 if (ret != 0) { 9756 break; 9757 } 9758 } 9759 9760 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 9761 if (ret) { 9762 phtimer = NULL; 9763 } else { 9764 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 9765 goto efault; 9766 } 9767 } 9768 } 9769 break; 9770 } 9771 #endif 9772 9773 #ifdef TARGET_NR_timer_settime 9774 case TARGET_NR_timer_settime: 9775 { 9776 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 9777 * struct itimerspec * old_value */ 9778 target_timer_t timerid = get_timer_id(arg1); 9779 9780 if (timerid < 0) { 9781 ret = timerid; 9782 } else if (arg3 == 0) { 9783 ret = -TARGET_EINVAL; 9784 } else { 9785 timer_t htimer = g_posix_timers[timerid]; 9786 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 9787 9788 target_to_host_itimerspec(&hspec_new, arg3); 9789 ret = get_errno( 9790 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 9791 host_to_target_itimerspec(arg2, &hspec_old); 9792 } 9793 break; 9794 } 9795 #endif 9796 9797 #ifdef TARGET_NR_timer_gettime 9798 case TARGET_NR_timer_gettime: 9799 { 9800 /* args: timer_t timerid, struct itimerspec *curr_value */ 9801 target_timer_t timerid = get_timer_id(arg1); 9802 9803 if (timerid < 0) { 9804 ret = timerid; 9805 } else if (!arg2) { 9806 ret = -TARGET_EFAULT; 9807 } else { 9808 timer_t htimer = g_posix_timers[timerid]; 9809 struct itimerspec hspec; 9810 ret = get_errno(timer_gettime(htimer, &hspec)); 9811 9812 if (host_to_target_itimerspec(arg2, &hspec)) { 9813 ret = -TARGET_EFAULT; 9814 } 9815 } 9816 break; 9817 } 9818 #endif 9819 9820 #ifdef TARGET_NR_timer_getoverrun 9821 case TARGET_NR_timer_getoverrun: 9822 { 9823 /* args: timer_t timerid */ 9824 target_timer_t timerid = get_timer_id(arg1); 9825 9826 if (timerid < 0) { 9827 ret = timerid; 9828 } else { 9829 timer_t htimer = g_posix_timers[timerid]; 9830 ret = get_errno(timer_getoverrun(htimer)); 9831 } 9832 break; 9833 } 9834 #endif 9835 9836 #ifdef TARGET_NR_timer_delete 9837 case TARGET_NR_timer_delete: 9838 { 9839 /* args: timer_t timerid */ 9840 target_timer_t timerid = get_timer_id(arg1); 9841 9842 if (timerid < 0) { 9843 ret = timerid; 9844 } else { 9845 timer_t htimer = g_posix_timers[timerid]; 9846 ret = get_errno(timer_delete(htimer)); 9847 g_posix_timers[timerid] = 0; 9848 } 9849 break; 9850 } 9851 #endif 9852 9853 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 9854 case TARGET_NR_timerfd_create: 9855 ret = get_errno(timerfd_create(arg1, 9856 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 9857 break; 9858 #endif 9859 9860 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 9861 case TARGET_NR_timerfd_gettime: 9862 { 9863 struct itimerspec its_curr; 9864 9865 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 9866 9867 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 9868 goto efault; 9869 } 9870 } 9871 break; 9872 #endif 9873 9874 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 9875 case TARGET_NR_timerfd_settime: 9876 { 9877 struct itimerspec its_new, its_old, *p_new; 9878 9879 if (arg3) { 9880 if (target_to_host_itimerspec(&its_new, arg3)) { 9881 goto efault; 9882 } 9883 p_new = &its_new; 9884 } else { 9885 p_new = NULL; 9886 } 9887 9888 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 9889 9890 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 9891 goto efault; 9892 } 9893 } 9894 break; 9895 #endif 9896 9897 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 9898 case TARGET_NR_ioprio_get: 9899 ret = get_errno(ioprio_get(arg1, arg2)); 9900 break; 9901 #endif 9902 9903 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 9904 case TARGET_NR_ioprio_set: 9905 ret = get_errno(ioprio_set(arg1, arg2, arg3)); 9906 break; 9907 #endif 9908 9909 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 9910 case TARGET_NR_setns: 9911 ret = get_errno(setns(arg1, arg2)); 9912 break; 9913 #endif 9914 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 9915 case TARGET_NR_unshare: 9916 ret = get_errno(unshare(arg1)); 9917 break; 9918 #endif 9919 9920 default: 9921 unimplemented: 9922 gemu_log("qemu: Unsupported syscall: %d\n", num); 9923 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list) 9924 unimplemented_nowarn: 9925 #endif 9926 ret = -TARGET_ENOSYS; 9927 break; 9928 } 9929 fail: 9930 #ifdef DEBUG 9931 gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); 9932 #endif 9933 if(do_strace) 9934 print_syscall_ret(num, ret); 9935 return ret; 9936 efault: 9937 ret = -TARGET_EFAULT; 9938 goto fail; 9939 } 9940