1 /* 2 * Linux syscalls 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 #define _ATFILE_SOURCE 20 #include "qemu/osdep.h" 21 #include "qemu/cutils.h" 22 #include "qemu/path.h" 23 #include "qemu/memfd.h" 24 #include "qemu/queue.h" 25 #include <elf.h> 26 #include <endian.h> 27 #include <grp.h> 28 #include <sys/ipc.h> 29 #include <sys/msg.h> 30 #include <sys/wait.h> 31 #include <sys/mount.h> 32 #include <sys/file.h> 33 #include <sys/fsuid.h> 34 #include <sys/personality.h> 35 #include <sys/prctl.h> 36 #include <sys/resource.h> 37 #include <sys/swap.h> 38 #include <linux/capability.h> 39 #include <sched.h> 40 #include <sys/timex.h> 41 #include <sys/socket.h> 42 #include <linux/sockios.h> 43 #include <sys/un.h> 44 #include <sys/uio.h> 45 #include <poll.h> 46 #include <sys/times.h> 47 #include <sys/shm.h> 48 #include <sys/sem.h> 49 #include <sys/statfs.h> 50 #include <utime.h> 51 #include <sys/sysinfo.h> 52 #include <sys/signalfd.h> 53 //#include <sys/user.h> 54 #include <netinet/in.h> 55 #include <netinet/ip.h> 56 #include <netinet/tcp.h> 57 #include <netinet/udp.h> 58 #include <linux/wireless.h> 59 #include <linux/icmp.h> 60 #include <linux/icmpv6.h> 61 #include <linux/if_tun.h> 62 #include <linux/in6.h> 63 #include <linux/errqueue.h> 64 #include <linux/random.h> 65 #ifdef CONFIG_TIMERFD 66 #include <sys/timerfd.h> 67 #endif 68 #ifdef CONFIG_EVENTFD 69 #include <sys/eventfd.h> 70 #endif 71 #ifdef CONFIG_EPOLL 72 #include <sys/epoll.h> 73 #endif 74 #ifdef CONFIG_ATTR 75 #include "qemu/xattr.h" 76 #endif 77 #ifdef CONFIG_SENDFILE 78 #include <sys/sendfile.h> 79 #endif 80 #ifdef HAVE_SYS_KCOV_H 81 #include <sys/kcov.h> 82 #endif 83 84 #define termios host_termios 85 #define winsize host_winsize 86 #define termio host_termio 87 #define sgttyb host_sgttyb /* same as target */ 88 #define tchars host_tchars /* same as target */ 89 #define ltchars host_ltchars /* same as target */ 90 91 #include <linux/termios.h> 92 #include <linux/unistd.h> 93 #include <linux/cdrom.h> 94 #include <linux/hdreg.h> 95 #include <linux/soundcard.h> 96 #include <linux/kd.h> 97 #include <linux/mtio.h> 98 99 #ifdef HAVE_SYS_MOUNT_FSCONFIG 100 /* 101 * glibc >= 2.36 linux/mount.h conflicts with sys/mount.h, 102 * which in turn prevents use of linux/fs.h. So we have to 103 * define the constants ourselves for now. 104 */ 105 #define FS_IOC_GETFLAGS _IOR('f', 1, long) 106 #define FS_IOC_SETFLAGS _IOW('f', 2, long) 107 #define FS_IOC_GETVERSION _IOR('v', 1, long) 108 #define FS_IOC_SETVERSION _IOW('v', 2, long) 109 #define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap) 110 #define FS_IOC32_GETFLAGS _IOR('f', 1, int) 111 #define FS_IOC32_SETFLAGS _IOW('f', 2, int) 112 #define FS_IOC32_GETVERSION _IOR('v', 1, int) 113 #define FS_IOC32_SETVERSION _IOW('v', 2, int) 114 #else 115 #include <linux/fs.h> 116 #endif 117 #include <linux/fd.h> 118 #if defined(CONFIG_FIEMAP) 119 #include <linux/fiemap.h> 120 #endif 121 #include <linux/fb.h> 122 #if defined(CONFIG_USBFS) 123 #include <linux/usbdevice_fs.h> 124 #include <linux/usb/ch9.h> 125 #endif 126 #include <linux/vt.h> 127 #include <linux/dm-ioctl.h> 128 #include <linux/reboot.h> 129 #include <linux/route.h> 130 #include <linux/filter.h> 131 #include <linux/blkpg.h> 132 #include <netpacket/packet.h> 133 #include <linux/netlink.h> 134 #include <linux/if_alg.h> 135 #include <linux/rtc.h> 136 #include <sound/asound.h> 137 #ifdef HAVE_BTRFS_H 138 #include <linux/btrfs.h> 139 #endif 140 #ifdef HAVE_DRM_H 141 #include <libdrm/drm.h> 142 #include <libdrm/i915_drm.h> 143 #endif 144 #include "linux_loop.h" 145 #include "uname.h" 146 147 #include "qemu.h" 148 #include "user-internals.h" 149 #include "strace.h" 150 #include "signal-common.h" 151 #include "loader.h" 152 #include "user-mmap.h" 153 #include "user/safe-syscall.h" 154 #include "qemu/guest-random.h" 155 #include "qemu/selfmap.h" 156 #include "user/syscall-trace.h" 157 #include "special-errno.h" 158 #include "qapi/error.h" 159 #include "fd-trans.h" 160 #include "tcg/tcg.h" 161 162 #ifndef CLONE_IO 163 #define CLONE_IO 0x80000000 /* Clone io context */ 164 #endif 165 166 /* We can't directly call the host clone syscall, because this will 167 * badly confuse libc (breaking mutexes, for example). So we must 168 * divide clone flags into: 169 * * flag combinations that look like pthread_create() 170 * * flag combinations that look like fork() 171 * * flags we can implement within QEMU itself 172 * * flags we can't support and will return an error for 173 */ 174 /* For thread creation, all these flags must be present; for 175 * fork, none must be present. 176 */ 177 #define CLONE_THREAD_FLAGS \ 178 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 179 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 180 181 /* These flags are ignored: 182 * CLONE_DETACHED is now ignored by the kernel; 183 * CLONE_IO is just an optimisation hint to the I/O scheduler 184 */ 185 #define CLONE_IGNORED_FLAGS \ 186 (CLONE_DETACHED | CLONE_IO) 187 188 /* Flags for fork which we can implement within QEMU itself */ 189 #define CLONE_OPTIONAL_FORK_FLAGS \ 190 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 191 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 192 193 /* Flags for thread creation which we can implement within QEMU itself */ 194 #define CLONE_OPTIONAL_THREAD_FLAGS \ 195 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 196 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 197 198 #define CLONE_INVALID_FORK_FLAGS \ 199 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 200 201 #define CLONE_INVALID_THREAD_FLAGS \ 202 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 203 CLONE_IGNORED_FLAGS)) 204 205 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 206 * have almost all been allocated. We cannot support any of 207 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 208 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 209 * The checks against the invalid thread masks above will catch these. 210 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 211 */ 212 213 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 214 * once. This exercises the codepaths for restart. 215 */ 216 //#define DEBUG_ERESTARTSYS 217 218 //#include <linux/msdos_fs.h> 219 #define VFAT_IOCTL_READDIR_BOTH \ 220 _IOC(_IOC_READ, 'r', 1, (sizeof(struct linux_dirent) + 256) * 2) 221 #define VFAT_IOCTL_READDIR_SHORT \ 222 _IOC(_IOC_READ, 'r', 2, (sizeof(struct linux_dirent) + 256) * 2) 223 224 #undef _syscall0 225 #undef _syscall1 226 #undef _syscall2 227 #undef _syscall3 228 #undef _syscall4 229 #undef _syscall5 230 #undef _syscall6 231 232 #define _syscall0(type,name) \ 233 static type name (void) \ 234 { \ 235 return syscall(__NR_##name); \ 236 } 237 238 #define _syscall1(type,name,type1,arg1) \ 239 static type name (type1 arg1) \ 240 { \ 241 return syscall(__NR_##name, arg1); \ 242 } 243 244 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 245 static type name (type1 arg1,type2 arg2) \ 246 { \ 247 return syscall(__NR_##name, arg1, arg2); \ 248 } 249 250 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 251 static type name (type1 arg1,type2 arg2,type3 arg3) \ 252 { \ 253 return syscall(__NR_##name, arg1, arg2, arg3); \ 254 } 255 256 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 257 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 258 { \ 259 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 260 } 261 262 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 263 type5,arg5) \ 264 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 265 { \ 266 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 267 } 268 269 270 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 271 type5,arg5,type6,arg6) \ 272 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 273 type6 arg6) \ 274 { \ 275 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 276 } 277 278 279 #define __NR_sys_uname __NR_uname 280 #define __NR_sys_getcwd1 __NR_getcwd 281 #define __NR_sys_getdents __NR_getdents 282 #define __NR_sys_getdents64 __NR_getdents64 283 #define __NR_sys_getpriority __NR_getpriority 284 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 285 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 286 #define __NR_sys_syslog __NR_syslog 287 #if defined(__NR_futex) 288 # define __NR_sys_futex __NR_futex 289 #endif 290 #if defined(__NR_futex_time64) 291 # define __NR_sys_futex_time64 __NR_futex_time64 292 #endif 293 #define __NR_sys_statx __NR_statx 294 295 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__) 296 #define __NR__llseek __NR_lseek 297 #endif 298 299 /* Newer kernel ports have llseek() instead of _llseek() */ 300 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 301 #define TARGET_NR__llseek TARGET_NR_llseek 302 #endif 303 304 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */ 305 #ifndef TARGET_O_NONBLOCK_MASK 306 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK 307 #endif 308 309 #define __NR_sys_gettid __NR_gettid 310 _syscall0(int, sys_gettid) 311 312 /* For the 64-bit guest on 32-bit host case we must emulate 313 * getdents using getdents64, because otherwise the host 314 * might hand us back more dirent records than we can fit 315 * into the guest buffer after structure format conversion. 316 * Otherwise we emulate getdents with getdents if the host has it. 317 */ 318 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS 319 #define EMULATE_GETDENTS_WITH_GETDENTS 320 #endif 321 322 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS) 323 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 324 #endif 325 #if (defined(TARGET_NR_getdents) && \ 326 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \ 327 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 328 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 329 #endif 330 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 331 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 332 loff_t *, res, uint, wh); 333 #endif 334 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 335 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 336 siginfo_t *, uinfo) 337 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 338 #ifdef __NR_exit_group 339 _syscall1(int,exit_group,int,error_code) 340 #endif 341 #if defined(__NR_futex) 342 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 343 const struct timespec *,timeout,int *,uaddr2,int,val3) 344 #endif 345 #if defined(__NR_futex_time64) 346 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, 347 const struct timespec *,timeout,int *,uaddr2,int,val3) 348 #endif 349 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 350 _syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags); 351 #endif 352 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 353 _syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info, 354 unsigned int, flags); 355 #endif 356 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 357 _syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags); 358 #endif 359 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 360 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 361 unsigned long *, user_mask_ptr); 362 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 363 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 364 unsigned long *, user_mask_ptr); 365 /* sched_attr is not defined in glibc */ 366 struct sched_attr { 367 uint32_t size; 368 uint32_t sched_policy; 369 uint64_t sched_flags; 370 int32_t sched_nice; 371 uint32_t sched_priority; 372 uint64_t sched_runtime; 373 uint64_t sched_deadline; 374 uint64_t sched_period; 375 uint32_t sched_util_min; 376 uint32_t sched_util_max; 377 }; 378 #define __NR_sys_sched_getattr __NR_sched_getattr 379 _syscall4(int, sys_sched_getattr, pid_t, pid, struct sched_attr *, attr, 380 unsigned int, size, unsigned int, flags); 381 #define __NR_sys_sched_setattr __NR_sched_setattr 382 _syscall3(int, sys_sched_setattr, pid_t, pid, struct sched_attr *, attr, 383 unsigned int, flags); 384 #define __NR_sys_sched_getscheduler __NR_sched_getscheduler 385 _syscall1(int, sys_sched_getscheduler, pid_t, pid); 386 #define __NR_sys_sched_setscheduler __NR_sched_setscheduler 387 _syscall3(int, sys_sched_setscheduler, pid_t, pid, int, policy, 388 const struct sched_param *, param); 389 #define __NR_sys_sched_getparam __NR_sched_getparam 390 _syscall2(int, sys_sched_getparam, pid_t, pid, 391 struct sched_param *, param); 392 #define __NR_sys_sched_setparam __NR_sched_setparam 393 _syscall2(int, sys_sched_setparam, pid_t, pid, 394 const struct sched_param *, param); 395 #define __NR_sys_getcpu __NR_getcpu 396 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); 397 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 398 void *, arg); 399 _syscall2(int, capget, struct __user_cap_header_struct *, header, 400 struct __user_cap_data_struct *, data); 401 _syscall2(int, capset, struct __user_cap_header_struct *, header, 402 struct __user_cap_data_struct *, data); 403 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 404 _syscall2(int, ioprio_get, int, which, int, who) 405 #endif 406 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 407 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 408 #endif 409 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 410 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 411 #endif 412 413 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 414 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 415 unsigned long, idx1, unsigned long, idx2) 416 #endif 417 418 /* 419 * It is assumed that struct statx is architecture independent. 420 */ 421 #if defined(TARGET_NR_statx) && defined(__NR_statx) 422 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags, 423 unsigned int, mask, struct target_statx *, statxbuf) 424 #endif 425 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) 426 _syscall2(int, membarrier, int, cmd, int, flags) 427 #endif 428 429 static const bitmask_transtbl fcntl_flags_tbl[] = { 430 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 431 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 432 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 433 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 434 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 435 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 436 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 437 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 438 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 439 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 440 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 441 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 442 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 443 #if defined(O_DIRECT) 444 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 445 #endif 446 #if defined(O_NOATIME) 447 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 448 #endif 449 #if defined(O_CLOEXEC) 450 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 451 #endif 452 #if defined(O_PATH) 453 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 454 #endif 455 #if defined(O_TMPFILE) 456 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE }, 457 #endif 458 /* Don't terminate the list prematurely on 64-bit host+guest. */ 459 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 460 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 461 #endif 462 { 0, 0, 0, 0 } 463 }; 464 465 _syscall2(int, sys_getcwd1, char *, buf, size_t, size) 466 467 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64) 468 #if defined(__NR_utimensat) 469 #define __NR_sys_utimensat __NR_utimensat 470 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 471 const struct timespec *,tsp,int,flags) 472 #else 473 static int sys_utimensat(int dirfd, const char *pathname, 474 const struct timespec times[2], int flags) 475 { 476 errno = ENOSYS; 477 return -1; 478 } 479 #endif 480 #endif /* TARGET_NR_utimensat */ 481 482 #ifdef TARGET_NR_renameat2 483 #if defined(__NR_renameat2) 484 #define __NR_sys_renameat2 __NR_renameat2 485 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, 486 const char *, new, unsigned int, flags) 487 #else 488 static int sys_renameat2(int oldfd, const char *old, 489 int newfd, const char *new, int flags) 490 { 491 if (flags == 0) { 492 return renameat(oldfd, old, newfd, new); 493 } 494 errno = ENOSYS; 495 return -1; 496 } 497 #endif 498 #endif /* TARGET_NR_renameat2 */ 499 500 #ifdef CONFIG_INOTIFY 501 #include <sys/inotify.h> 502 #else 503 /* Userspace can usually survive runtime without inotify */ 504 #undef TARGET_NR_inotify_init 505 #undef TARGET_NR_inotify_init1 506 #undef TARGET_NR_inotify_add_watch 507 #undef TARGET_NR_inotify_rm_watch 508 #endif /* CONFIG_INOTIFY */ 509 510 #if defined(TARGET_NR_prlimit64) 511 #ifndef __NR_prlimit64 512 # define __NR_prlimit64 -1 513 #endif 514 #define __NR_sys_prlimit64 __NR_prlimit64 515 /* The glibc rlimit structure may not be that used by the underlying syscall */ 516 struct host_rlimit64 { 517 uint64_t rlim_cur; 518 uint64_t rlim_max; 519 }; 520 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 521 const struct host_rlimit64 *, new_limit, 522 struct host_rlimit64 *, old_limit) 523 #endif 524 525 526 #if defined(TARGET_NR_timer_create) 527 /* Maximum of 32 active POSIX timers allowed at any one time. */ 528 #define GUEST_TIMER_MAX 32 529 static timer_t g_posix_timers[GUEST_TIMER_MAX]; 530 static int g_posix_timer_allocated[GUEST_TIMER_MAX]; 531 532 static inline int next_free_host_timer(void) 533 { 534 int k; 535 for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) { 536 if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) { 537 return k; 538 } 539 } 540 return -1; 541 } 542 543 static inline void free_host_timer_slot(int id) 544 { 545 qatomic_store_release(g_posix_timer_allocated + id, 0); 546 } 547 #endif 548 549 static inline int host_to_target_errno(int host_errno) 550 { 551 switch (host_errno) { 552 #define E(X) case X: return TARGET_##X; 553 #include "errnos.c.inc" 554 #undef E 555 default: 556 return host_errno; 557 } 558 } 559 560 static inline int target_to_host_errno(int target_errno) 561 { 562 switch (target_errno) { 563 #define E(X) case TARGET_##X: return X; 564 #include "errnos.c.inc" 565 #undef E 566 default: 567 return target_errno; 568 } 569 } 570 571 abi_long get_errno(abi_long ret) 572 { 573 if (ret == -1) 574 return -host_to_target_errno(errno); 575 else 576 return ret; 577 } 578 579 const char *target_strerror(int err) 580 { 581 if (err == QEMU_ERESTARTSYS) { 582 return "To be restarted"; 583 } 584 if (err == QEMU_ESIGRETURN) { 585 return "Successful exit from sigreturn"; 586 } 587 588 return strerror(target_to_host_errno(err)); 589 } 590 591 static int check_zeroed_user(abi_long addr, size_t ksize, size_t usize) 592 { 593 int i; 594 uint8_t b; 595 if (usize <= ksize) { 596 return 1; 597 } 598 for (i = ksize; i < usize; i++) { 599 if (get_user_u8(b, addr + i)) { 600 return -TARGET_EFAULT; 601 } 602 if (b != 0) { 603 return 0; 604 } 605 } 606 return 1; 607 } 608 609 #define safe_syscall0(type, name) \ 610 static type safe_##name(void) \ 611 { \ 612 return safe_syscall(__NR_##name); \ 613 } 614 615 #define safe_syscall1(type, name, type1, arg1) \ 616 static type safe_##name(type1 arg1) \ 617 { \ 618 return safe_syscall(__NR_##name, arg1); \ 619 } 620 621 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 622 static type safe_##name(type1 arg1, type2 arg2) \ 623 { \ 624 return safe_syscall(__NR_##name, arg1, arg2); \ 625 } 626 627 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 628 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 629 { \ 630 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 631 } 632 633 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 634 type4, arg4) \ 635 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 636 { \ 637 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 638 } 639 640 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 641 type4, arg4, type5, arg5) \ 642 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 643 type5 arg5) \ 644 { \ 645 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 646 } 647 648 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 649 type4, arg4, type5, arg5, type6, arg6) \ 650 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 651 type5 arg5, type6 arg6) \ 652 { \ 653 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 654 } 655 656 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 657 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 658 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 659 int, flags, mode_t, mode) 660 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) 661 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 662 struct rusage *, rusage) 663 #endif 664 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 665 int, options, struct rusage *, rusage) 666 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 667 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 668 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 669 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 670 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 671 #endif 672 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64) 673 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 674 struct timespec *, tsp, const sigset_t *, sigmask, 675 size_t, sigsetsize) 676 #endif 677 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 678 int, maxevents, int, timeout, const sigset_t *, sigmask, 679 size_t, sigsetsize) 680 #if defined(__NR_futex) 681 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 682 const struct timespec *,timeout,int *,uaddr2,int,val3) 683 #endif 684 #if defined(__NR_futex_time64) 685 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \ 686 const struct timespec *,timeout,int *,uaddr2,int,val3) 687 #endif 688 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 689 safe_syscall2(int, kill, pid_t, pid, int, sig) 690 safe_syscall2(int, tkill, int, tid, int, sig) 691 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 692 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 693 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 694 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 695 unsigned long, pos_l, unsigned long, pos_h) 696 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 697 unsigned long, pos_l, unsigned long, pos_h) 698 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 699 socklen_t, addrlen) 700 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 701 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 702 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 703 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 704 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 705 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 706 safe_syscall2(int, flock, int, fd, int, operation) 707 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64) 708 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 709 const struct timespec *, uts, size_t, sigsetsize) 710 #endif 711 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 712 int, flags) 713 #if defined(TARGET_NR_nanosleep) 714 safe_syscall2(int, nanosleep, const struct timespec *, req, 715 struct timespec *, rem) 716 #endif 717 #if defined(TARGET_NR_clock_nanosleep) || \ 718 defined(TARGET_NR_clock_nanosleep_time64) 719 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 720 const struct timespec *, req, struct timespec *, rem) 721 #endif 722 #ifdef __NR_ipc 723 #ifdef __s390x__ 724 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third, 725 void *, ptr) 726 #else 727 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 728 void *, ptr, long, fifth) 729 #endif 730 #endif 731 #ifdef __NR_msgsnd 732 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 733 int, flags) 734 #endif 735 #ifdef __NR_msgrcv 736 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 737 long, msgtype, int, flags) 738 #endif 739 #ifdef __NR_semtimedop 740 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 741 unsigned, nsops, const struct timespec *, timeout) 742 #endif 743 #if defined(TARGET_NR_mq_timedsend) || \ 744 defined(TARGET_NR_mq_timedsend_time64) 745 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 746 size_t, len, unsigned, prio, const struct timespec *, timeout) 747 #endif 748 #if defined(TARGET_NR_mq_timedreceive) || \ 749 defined(TARGET_NR_mq_timedreceive_time64) 750 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 751 size_t, len, unsigned *, prio, const struct timespec *, timeout) 752 #endif 753 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 754 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff, 755 int, outfd, loff_t *, poutoff, size_t, length, 756 unsigned int, flags) 757 #endif 758 759 /* We do ioctl like this rather than via safe_syscall3 to preserve the 760 * "third argument might be integer or pointer or not present" behaviour of 761 * the libc function. 762 */ 763 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 764 /* Similarly for fcntl. Note that callers must always: 765 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 766 * use the flock64 struct rather than unsuffixed flock 767 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 768 */ 769 #ifdef __NR_fcntl64 770 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 771 #else 772 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 773 #endif 774 775 static inline int host_to_target_sock_type(int host_type) 776 { 777 int target_type; 778 779 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 780 case SOCK_DGRAM: 781 target_type = TARGET_SOCK_DGRAM; 782 break; 783 case SOCK_STREAM: 784 target_type = TARGET_SOCK_STREAM; 785 break; 786 default: 787 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 788 break; 789 } 790 791 #if defined(SOCK_CLOEXEC) 792 if (host_type & SOCK_CLOEXEC) { 793 target_type |= TARGET_SOCK_CLOEXEC; 794 } 795 #endif 796 797 #if defined(SOCK_NONBLOCK) 798 if (host_type & SOCK_NONBLOCK) { 799 target_type |= TARGET_SOCK_NONBLOCK; 800 } 801 #endif 802 803 return target_type; 804 } 805 806 static abi_ulong target_brk; 807 static abi_ulong target_original_brk; 808 static abi_ulong brk_page; 809 810 void target_set_brk(abi_ulong new_brk) 811 { 812 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 813 brk_page = HOST_PAGE_ALIGN(target_brk); 814 } 815 816 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 817 #define DEBUGF_BRK(message, args...) 818 819 /* do_brk() must return target values and target errnos. */ 820 abi_long do_brk(abi_ulong new_brk) 821 { 822 abi_long mapped_addr; 823 abi_ulong new_alloc_size; 824 825 /* brk pointers are always untagged */ 826 827 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 828 829 if (!new_brk) { 830 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 831 return target_brk; 832 } 833 if (new_brk < target_original_brk) { 834 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 835 target_brk); 836 return target_brk; 837 } 838 839 /* If the new brk is less than the highest page reserved to the 840 * target heap allocation, set it and we're almost done... */ 841 if (new_brk <= brk_page) { 842 /* Heap contents are initialized to zero, as for anonymous 843 * mapped pages. */ 844 if (new_brk > target_brk) { 845 memset(g2h_untagged(target_brk), 0, new_brk - target_brk); 846 } 847 target_brk = new_brk; 848 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 849 return target_brk; 850 } 851 852 /* We need to allocate more memory after the brk... Note that 853 * we don't use MAP_FIXED because that will map over the top of 854 * any existing mapping (like the one with the host libc or qemu 855 * itself); instead we treat "mapped but at wrong address" as 856 * a failure and unmap again. 857 */ 858 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 859 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 860 PROT_READ|PROT_WRITE, 861 MAP_ANON|MAP_PRIVATE, 0, 0)); 862 863 if (mapped_addr == brk_page) { 864 /* Heap contents are initialized to zero, as for anonymous 865 * mapped pages. Technically the new pages are already 866 * initialized to zero since they *are* anonymous mapped 867 * pages, however we have to take care with the contents that 868 * come from the remaining part of the previous page: it may 869 * contains garbage data due to a previous heap usage (grown 870 * then shrunken). */ 871 memset(g2h_untagged(target_brk), 0, brk_page - target_brk); 872 873 target_brk = new_brk; 874 brk_page = HOST_PAGE_ALIGN(target_brk); 875 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 876 target_brk); 877 return target_brk; 878 } else if (mapped_addr != -1) { 879 /* Mapped but at wrong address, meaning there wasn't actually 880 * enough space for this brk. 881 */ 882 target_munmap(mapped_addr, new_alloc_size); 883 mapped_addr = -1; 884 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 885 } 886 else { 887 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 888 } 889 890 #if defined(TARGET_ALPHA) 891 /* We (partially) emulate OSF/1 on Alpha, which requires we 892 return a proper errno, not an unchanged brk value. */ 893 return -TARGET_ENOMEM; 894 #endif 895 /* For everything else, return the previous break. */ 896 return target_brk; 897 } 898 899 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ 900 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 901 static inline abi_long copy_from_user_fdset(fd_set *fds, 902 abi_ulong target_fds_addr, 903 int n) 904 { 905 int i, nw, j, k; 906 abi_ulong b, *target_fds; 907 908 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 909 if (!(target_fds = lock_user(VERIFY_READ, 910 target_fds_addr, 911 sizeof(abi_ulong) * nw, 912 1))) 913 return -TARGET_EFAULT; 914 915 FD_ZERO(fds); 916 k = 0; 917 for (i = 0; i < nw; i++) { 918 /* grab the abi_ulong */ 919 __get_user(b, &target_fds[i]); 920 for (j = 0; j < TARGET_ABI_BITS; j++) { 921 /* check the bit inside the abi_ulong */ 922 if ((b >> j) & 1) 923 FD_SET(k, fds); 924 k++; 925 } 926 } 927 928 unlock_user(target_fds, target_fds_addr, 0); 929 930 return 0; 931 } 932 933 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 934 abi_ulong target_fds_addr, 935 int n) 936 { 937 if (target_fds_addr) { 938 if (copy_from_user_fdset(fds, target_fds_addr, n)) 939 return -TARGET_EFAULT; 940 *fds_ptr = fds; 941 } else { 942 *fds_ptr = NULL; 943 } 944 return 0; 945 } 946 947 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 948 const fd_set *fds, 949 int n) 950 { 951 int i, nw, j, k; 952 abi_long v; 953 abi_ulong *target_fds; 954 955 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 956 if (!(target_fds = lock_user(VERIFY_WRITE, 957 target_fds_addr, 958 sizeof(abi_ulong) * nw, 959 0))) 960 return -TARGET_EFAULT; 961 962 k = 0; 963 for (i = 0; i < nw; i++) { 964 v = 0; 965 for (j = 0; j < TARGET_ABI_BITS; j++) { 966 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 967 k++; 968 } 969 __put_user(v, &target_fds[i]); 970 } 971 972 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 973 974 return 0; 975 } 976 #endif 977 978 #if defined(__alpha__) 979 #define HOST_HZ 1024 980 #else 981 #define HOST_HZ 100 982 #endif 983 984 static inline abi_long host_to_target_clock_t(long ticks) 985 { 986 #if HOST_HZ == TARGET_HZ 987 return ticks; 988 #else 989 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 990 #endif 991 } 992 993 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 994 const struct rusage *rusage) 995 { 996 struct target_rusage *target_rusage; 997 998 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 999 return -TARGET_EFAULT; 1000 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 1001 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 1002 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 1003 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 1004 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 1005 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 1006 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 1007 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 1008 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 1009 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 1010 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 1011 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 1012 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 1013 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 1014 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 1015 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 1016 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 1017 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 1018 unlock_user_struct(target_rusage, target_addr, 1); 1019 1020 return 0; 1021 } 1022 1023 #ifdef TARGET_NR_setrlimit 1024 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 1025 { 1026 abi_ulong target_rlim_swap; 1027 rlim_t result; 1028 1029 target_rlim_swap = tswapal(target_rlim); 1030 if (target_rlim_swap == TARGET_RLIM_INFINITY) 1031 return RLIM_INFINITY; 1032 1033 result = target_rlim_swap; 1034 if (target_rlim_swap != (rlim_t)result) 1035 return RLIM_INFINITY; 1036 1037 return result; 1038 } 1039 #endif 1040 1041 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) 1042 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 1043 { 1044 abi_ulong target_rlim_swap; 1045 abi_ulong result; 1046 1047 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1048 target_rlim_swap = TARGET_RLIM_INFINITY; 1049 else 1050 target_rlim_swap = rlim; 1051 result = tswapal(target_rlim_swap); 1052 1053 return result; 1054 } 1055 #endif 1056 1057 static inline int target_to_host_resource(int code) 1058 { 1059 switch (code) { 1060 case TARGET_RLIMIT_AS: 1061 return RLIMIT_AS; 1062 case TARGET_RLIMIT_CORE: 1063 return RLIMIT_CORE; 1064 case TARGET_RLIMIT_CPU: 1065 return RLIMIT_CPU; 1066 case TARGET_RLIMIT_DATA: 1067 return RLIMIT_DATA; 1068 case TARGET_RLIMIT_FSIZE: 1069 return RLIMIT_FSIZE; 1070 case TARGET_RLIMIT_LOCKS: 1071 return RLIMIT_LOCKS; 1072 case TARGET_RLIMIT_MEMLOCK: 1073 return RLIMIT_MEMLOCK; 1074 case TARGET_RLIMIT_MSGQUEUE: 1075 return RLIMIT_MSGQUEUE; 1076 case TARGET_RLIMIT_NICE: 1077 return RLIMIT_NICE; 1078 case TARGET_RLIMIT_NOFILE: 1079 return RLIMIT_NOFILE; 1080 case TARGET_RLIMIT_NPROC: 1081 return RLIMIT_NPROC; 1082 case TARGET_RLIMIT_RSS: 1083 return RLIMIT_RSS; 1084 case TARGET_RLIMIT_RTPRIO: 1085 return RLIMIT_RTPRIO; 1086 #ifdef RLIMIT_RTTIME 1087 case TARGET_RLIMIT_RTTIME: 1088 return RLIMIT_RTTIME; 1089 #endif 1090 case TARGET_RLIMIT_SIGPENDING: 1091 return RLIMIT_SIGPENDING; 1092 case TARGET_RLIMIT_STACK: 1093 return RLIMIT_STACK; 1094 default: 1095 return code; 1096 } 1097 } 1098 1099 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1100 abi_ulong target_tv_addr) 1101 { 1102 struct target_timeval *target_tv; 1103 1104 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1105 return -TARGET_EFAULT; 1106 } 1107 1108 __get_user(tv->tv_sec, &target_tv->tv_sec); 1109 __get_user(tv->tv_usec, &target_tv->tv_usec); 1110 1111 unlock_user_struct(target_tv, target_tv_addr, 0); 1112 1113 return 0; 1114 } 1115 1116 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1117 const struct timeval *tv) 1118 { 1119 struct target_timeval *target_tv; 1120 1121 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1122 return -TARGET_EFAULT; 1123 } 1124 1125 __put_user(tv->tv_sec, &target_tv->tv_sec); 1126 __put_user(tv->tv_usec, &target_tv->tv_usec); 1127 1128 unlock_user_struct(target_tv, target_tv_addr, 1); 1129 1130 return 0; 1131 } 1132 1133 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 1134 static inline abi_long copy_from_user_timeval64(struct timeval *tv, 1135 abi_ulong target_tv_addr) 1136 { 1137 struct target__kernel_sock_timeval *target_tv; 1138 1139 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) { 1140 return -TARGET_EFAULT; 1141 } 1142 1143 __get_user(tv->tv_sec, &target_tv->tv_sec); 1144 __get_user(tv->tv_usec, &target_tv->tv_usec); 1145 1146 unlock_user_struct(target_tv, target_tv_addr, 0); 1147 1148 return 0; 1149 } 1150 #endif 1151 1152 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, 1153 const struct timeval *tv) 1154 { 1155 struct target__kernel_sock_timeval *target_tv; 1156 1157 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) { 1158 return -TARGET_EFAULT; 1159 } 1160 1161 __put_user(tv->tv_sec, &target_tv->tv_sec); 1162 __put_user(tv->tv_usec, &target_tv->tv_usec); 1163 1164 unlock_user_struct(target_tv, target_tv_addr, 1); 1165 1166 return 0; 1167 } 1168 1169 #if defined(TARGET_NR_futex) || \ 1170 defined(TARGET_NR_rt_sigtimedwait) || \ 1171 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ 1172 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ 1173 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ 1174 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \ 1175 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \ 1176 defined(TARGET_NR_timer_settime) || \ 1177 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 1178 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 1179 abi_ulong target_addr) 1180 { 1181 struct target_timespec *target_ts; 1182 1183 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1184 return -TARGET_EFAULT; 1185 } 1186 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1187 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1188 unlock_user_struct(target_ts, target_addr, 0); 1189 return 0; 1190 } 1191 #endif 1192 1193 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \ 1194 defined(TARGET_NR_timer_settime64) || \ 1195 defined(TARGET_NR_mq_timedsend_time64) || \ 1196 defined(TARGET_NR_mq_timedreceive_time64) || \ 1197 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \ 1198 defined(TARGET_NR_clock_nanosleep_time64) || \ 1199 defined(TARGET_NR_rt_sigtimedwait_time64) || \ 1200 defined(TARGET_NR_utimensat) || \ 1201 defined(TARGET_NR_utimensat_time64) || \ 1202 defined(TARGET_NR_semtimedop_time64) || \ 1203 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64) 1204 static inline abi_long target_to_host_timespec64(struct timespec *host_ts, 1205 abi_ulong target_addr) 1206 { 1207 struct target__kernel_timespec *target_ts; 1208 1209 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { 1210 return -TARGET_EFAULT; 1211 } 1212 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 1213 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1214 /* in 32bit mode, this drops the padding */ 1215 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec; 1216 unlock_user_struct(target_ts, target_addr, 0); 1217 return 0; 1218 } 1219 #endif 1220 1221 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 1222 struct timespec *host_ts) 1223 { 1224 struct target_timespec *target_ts; 1225 1226 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1227 return -TARGET_EFAULT; 1228 } 1229 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1230 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1231 unlock_user_struct(target_ts, target_addr, 1); 1232 return 0; 1233 } 1234 1235 static inline abi_long host_to_target_timespec64(abi_ulong target_addr, 1236 struct timespec *host_ts) 1237 { 1238 struct target__kernel_timespec *target_ts; 1239 1240 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) { 1241 return -TARGET_EFAULT; 1242 } 1243 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 1244 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 1245 unlock_user_struct(target_ts, target_addr, 1); 1246 return 0; 1247 } 1248 1249 #if defined(TARGET_NR_gettimeofday) 1250 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, 1251 struct timezone *tz) 1252 { 1253 struct target_timezone *target_tz; 1254 1255 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) { 1256 return -TARGET_EFAULT; 1257 } 1258 1259 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1260 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1261 1262 unlock_user_struct(target_tz, target_tz_addr, 1); 1263 1264 return 0; 1265 } 1266 #endif 1267 1268 #if defined(TARGET_NR_settimeofday) 1269 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1270 abi_ulong target_tz_addr) 1271 { 1272 struct target_timezone *target_tz; 1273 1274 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1275 return -TARGET_EFAULT; 1276 } 1277 1278 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1279 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1280 1281 unlock_user_struct(target_tz, target_tz_addr, 0); 1282 1283 return 0; 1284 } 1285 #endif 1286 1287 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1288 #include <mqueue.h> 1289 1290 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1291 abi_ulong target_mq_attr_addr) 1292 { 1293 struct target_mq_attr *target_mq_attr; 1294 1295 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1296 target_mq_attr_addr, 1)) 1297 return -TARGET_EFAULT; 1298 1299 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1300 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1301 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1302 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1303 1304 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1305 1306 return 0; 1307 } 1308 1309 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1310 const struct mq_attr *attr) 1311 { 1312 struct target_mq_attr *target_mq_attr; 1313 1314 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1315 target_mq_attr_addr, 0)) 1316 return -TARGET_EFAULT; 1317 1318 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1319 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1320 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1321 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1322 1323 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1324 1325 return 0; 1326 } 1327 #endif 1328 1329 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1330 /* do_select() must return target values and target errnos. */ 1331 static abi_long do_select(int n, 1332 abi_ulong rfd_addr, abi_ulong wfd_addr, 1333 abi_ulong efd_addr, abi_ulong target_tv_addr) 1334 { 1335 fd_set rfds, wfds, efds; 1336 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1337 struct timeval tv; 1338 struct timespec ts, *ts_ptr; 1339 abi_long ret; 1340 1341 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1342 if (ret) { 1343 return ret; 1344 } 1345 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1346 if (ret) { 1347 return ret; 1348 } 1349 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1350 if (ret) { 1351 return ret; 1352 } 1353 1354 if (target_tv_addr) { 1355 if (copy_from_user_timeval(&tv, target_tv_addr)) 1356 return -TARGET_EFAULT; 1357 ts.tv_sec = tv.tv_sec; 1358 ts.tv_nsec = tv.tv_usec * 1000; 1359 ts_ptr = &ts; 1360 } else { 1361 ts_ptr = NULL; 1362 } 1363 1364 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1365 ts_ptr, NULL)); 1366 1367 if (!is_error(ret)) { 1368 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1369 return -TARGET_EFAULT; 1370 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1371 return -TARGET_EFAULT; 1372 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1373 return -TARGET_EFAULT; 1374 1375 if (target_tv_addr) { 1376 tv.tv_sec = ts.tv_sec; 1377 tv.tv_usec = ts.tv_nsec / 1000; 1378 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1379 return -TARGET_EFAULT; 1380 } 1381 } 1382 } 1383 1384 return ret; 1385 } 1386 1387 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1388 static abi_long do_old_select(abi_ulong arg1) 1389 { 1390 struct target_sel_arg_struct *sel; 1391 abi_ulong inp, outp, exp, tvp; 1392 long nsel; 1393 1394 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1395 return -TARGET_EFAULT; 1396 } 1397 1398 nsel = tswapal(sel->n); 1399 inp = tswapal(sel->inp); 1400 outp = tswapal(sel->outp); 1401 exp = tswapal(sel->exp); 1402 tvp = tswapal(sel->tvp); 1403 1404 unlock_user_struct(sel, arg1, 0); 1405 1406 return do_select(nsel, inp, outp, exp, tvp); 1407 } 1408 #endif 1409 #endif 1410 1411 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) 1412 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3, 1413 abi_long arg4, abi_long arg5, abi_long arg6, 1414 bool time64) 1415 { 1416 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 1417 fd_set rfds, wfds, efds; 1418 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1419 struct timespec ts, *ts_ptr; 1420 abi_long ret; 1421 1422 /* 1423 * The 6th arg is actually two args smashed together, 1424 * so we cannot use the C library. 1425 */ 1426 struct { 1427 sigset_t *set; 1428 size_t size; 1429 } sig, *sig_ptr; 1430 1431 abi_ulong arg_sigset, arg_sigsize, *arg7; 1432 1433 n = arg1; 1434 rfd_addr = arg2; 1435 wfd_addr = arg3; 1436 efd_addr = arg4; 1437 ts_addr = arg5; 1438 1439 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1440 if (ret) { 1441 return ret; 1442 } 1443 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1444 if (ret) { 1445 return ret; 1446 } 1447 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1448 if (ret) { 1449 return ret; 1450 } 1451 1452 /* 1453 * This takes a timespec, and not a timeval, so we cannot 1454 * use the do_select() helper ... 1455 */ 1456 if (ts_addr) { 1457 if (time64) { 1458 if (target_to_host_timespec64(&ts, ts_addr)) { 1459 return -TARGET_EFAULT; 1460 } 1461 } else { 1462 if (target_to_host_timespec(&ts, ts_addr)) { 1463 return -TARGET_EFAULT; 1464 } 1465 } 1466 ts_ptr = &ts; 1467 } else { 1468 ts_ptr = NULL; 1469 } 1470 1471 /* Extract the two packed args for the sigset */ 1472 sig_ptr = NULL; 1473 if (arg6) { 1474 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 1475 if (!arg7) { 1476 return -TARGET_EFAULT; 1477 } 1478 arg_sigset = tswapal(arg7[0]); 1479 arg_sigsize = tswapal(arg7[1]); 1480 unlock_user(arg7, arg6, 0); 1481 1482 if (arg_sigset) { 1483 ret = process_sigsuspend_mask(&sig.set, arg_sigset, arg_sigsize); 1484 if (ret != 0) { 1485 return ret; 1486 } 1487 sig_ptr = &sig; 1488 sig.size = SIGSET_T_SIZE; 1489 } 1490 } 1491 1492 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1493 ts_ptr, sig_ptr)); 1494 1495 if (sig_ptr) { 1496 finish_sigsuspend_mask(ret); 1497 } 1498 1499 if (!is_error(ret)) { 1500 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) { 1501 return -TARGET_EFAULT; 1502 } 1503 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) { 1504 return -TARGET_EFAULT; 1505 } 1506 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) { 1507 return -TARGET_EFAULT; 1508 } 1509 if (time64) { 1510 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) { 1511 return -TARGET_EFAULT; 1512 } 1513 } else { 1514 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) { 1515 return -TARGET_EFAULT; 1516 } 1517 } 1518 } 1519 return ret; 1520 } 1521 #endif 1522 1523 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \ 1524 defined(TARGET_NR_ppoll_time64) 1525 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3, 1526 abi_long arg4, abi_long arg5, bool ppoll, bool time64) 1527 { 1528 struct target_pollfd *target_pfd; 1529 unsigned int nfds = arg2; 1530 struct pollfd *pfd; 1531 unsigned int i; 1532 abi_long ret; 1533 1534 pfd = NULL; 1535 target_pfd = NULL; 1536 if (nfds) { 1537 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 1538 return -TARGET_EINVAL; 1539 } 1540 target_pfd = lock_user(VERIFY_WRITE, arg1, 1541 sizeof(struct target_pollfd) * nfds, 1); 1542 if (!target_pfd) { 1543 return -TARGET_EFAULT; 1544 } 1545 1546 pfd = alloca(sizeof(struct pollfd) * nfds); 1547 for (i = 0; i < nfds; i++) { 1548 pfd[i].fd = tswap32(target_pfd[i].fd); 1549 pfd[i].events = tswap16(target_pfd[i].events); 1550 } 1551 } 1552 if (ppoll) { 1553 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 1554 sigset_t *set = NULL; 1555 1556 if (arg3) { 1557 if (time64) { 1558 if (target_to_host_timespec64(timeout_ts, arg3)) { 1559 unlock_user(target_pfd, arg1, 0); 1560 return -TARGET_EFAULT; 1561 } 1562 } else { 1563 if (target_to_host_timespec(timeout_ts, arg3)) { 1564 unlock_user(target_pfd, arg1, 0); 1565 return -TARGET_EFAULT; 1566 } 1567 } 1568 } else { 1569 timeout_ts = NULL; 1570 } 1571 1572 if (arg4) { 1573 ret = process_sigsuspend_mask(&set, arg4, arg5); 1574 if (ret != 0) { 1575 unlock_user(target_pfd, arg1, 0); 1576 return ret; 1577 } 1578 } 1579 1580 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 1581 set, SIGSET_T_SIZE)); 1582 1583 if (set) { 1584 finish_sigsuspend_mask(ret); 1585 } 1586 if (!is_error(ret) && arg3) { 1587 if (time64) { 1588 if (host_to_target_timespec64(arg3, timeout_ts)) { 1589 return -TARGET_EFAULT; 1590 } 1591 } else { 1592 if (host_to_target_timespec(arg3, timeout_ts)) { 1593 return -TARGET_EFAULT; 1594 } 1595 } 1596 } 1597 } else { 1598 struct timespec ts, *pts; 1599 1600 if (arg3 >= 0) { 1601 /* Convert ms to secs, ns */ 1602 ts.tv_sec = arg3 / 1000; 1603 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 1604 pts = &ts; 1605 } else { 1606 /* -ve poll() timeout means "infinite" */ 1607 pts = NULL; 1608 } 1609 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 1610 } 1611 1612 if (!is_error(ret)) { 1613 for (i = 0; i < nfds; i++) { 1614 target_pfd[i].revents = tswap16(pfd[i].revents); 1615 } 1616 } 1617 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 1618 return ret; 1619 } 1620 #endif 1621 1622 static abi_long do_pipe(CPUArchState *cpu_env, abi_ulong pipedes, 1623 int flags, int is_pipe2) 1624 { 1625 int host_pipe[2]; 1626 abi_long ret; 1627 ret = pipe2(host_pipe, flags); 1628 1629 if (is_error(ret)) 1630 return get_errno(ret); 1631 1632 /* Several targets have special calling conventions for the original 1633 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1634 if (!is_pipe2) { 1635 #if defined(TARGET_ALPHA) 1636 cpu_env->ir[IR_A4] = host_pipe[1]; 1637 return host_pipe[0]; 1638 #elif defined(TARGET_MIPS) 1639 cpu_env->active_tc.gpr[3] = host_pipe[1]; 1640 return host_pipe[0]; 1641 #elif defined(TARGET_SH4) 1642 cpu_env->gregs[1] = host_pipe[1]; 1643 return host_pipe[0]; 1644 #elif defined(TARGET_SPARC) 1645 cpu_env->regwptr[1] = host_pipe[1]; 1646 return host_pipe[0]; 1647 #endif 1648 } 1649 1650 if (put_user_s32(host_pipe[0], pipedes) 1651 || put_user_s32(host_pipe[1], pipedes + sizeof(abi_int))) 1652 return -TARGET_EFAULT; 1653 return get_errno(ret); 1654 } 1655 1656 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1657 abi_ulong target_addr, 1658 socklen_t len) 1659 { 1660 struct target_ip_mreqn *target_smreqn; 1661 1662 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1663 if (!target_smreqn) 1664 return -TARGET_EFAULT; 1665 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1666 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1667 if (len == sizeof(struct target_ip_mreqn)) 1668 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1669 unlock_user(target_smreqn, target_addr, 0); 1670 1671 return 0; 1672 } 1673 1674 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1675 abi_ulong target_addr, 1676 socklen_t len) 1677 { 1678 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1679 sa_family_t sa_family; 1680 struct target_sockaddr *target_saddr; 1681 1682 if (fd_trans_target_to_host_addr(fd)) { 1683 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1684 } 1685 1686 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1687 if (!target_saddr) 1688 return -TARGET_EFAULT; 1689 1690 sa_family = tswap16(target_saddr->sa_family); 1691 1692 /* Oops. The caller might send a incomplete sun_path; sun_path 1693 * must be terminated by \0 (see the manual page), but 1694 * unfortunately it is quite common to specify sockaddr_un 1695 * length as "strlen(x->sun_path)" while it should be 1696 * "strlen(...) + 1". We'll fix that here if needed. 1697 * Linux kernel has a similar feature. 1698 */ 1699 1700 if (sa_family == AF_UNIX) { 1701 if (len < unix_maxlen && len > 0) { 1702 char *cp = (char*)target_saddr; 1703 1704 if ( cp[len-1] && !cp[len] ) 1705 len++; 1706 } 1707 if (len > unix_maxlen) 1708 len = unix_maxlen; 1709 } 1710 1711 memcpy(addr, target_saddr, len); 1712 addr->sa_family = sa_family; 1713 if (sa_family == AF_NETLINK) { 1714 struct sockaddr_nl *nladdr; 1715 1716 nladdr = (struct sockaddr_nl *)addr; 1717 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1718 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1719 } else if (sa_family == AF_PACKET) { 1720 struct target_sockaddr_ll *lladdr; 1721 1722 lladdr = (struct target_sockaddr_ll *)addr; 1723 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1724 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1725 } 1726 unlock_user(target_saddr, target_addr, 0); 1727 1728 return 0; 1729 } 1730 1731 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1732 struct sockaddr *addr, 1733 socklen_t len) 1734 { 1735 struct target_sockaddr *target_saddr; 1736 1737 if (len == 0) { 1738 return 0; 1739 } 1740 assert(addr); 1741 1742 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1743 if (!target_saddr) 1744 return -TARGET_EFAULT; 1745 memcpy(target_saddr, addr, len); 1746 if (len >= offsetof(struct target_sockaddr, sa_family) + 1747 sizeof(target_saddr->sa_family)) { 1748 target_saddr->sa_family = tswap16(addr->sa_family); 1749 } 1750 if (addr->sa_family == AF_NETLINK && 1751 len >= sizeof(struct target_sockaddr_nl)) { 1752 struct target_sockaddr_nl *target_nl = 1753 (struct target_sockaddr_nl *)target_saddr; 1754 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1755 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1756 } else if (addr->sa_family == AF_PACKET) { 1757 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1758 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1759 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1760 } else if (addr->sa_family == AF_INET6 && 1761 len >= sizeof(struct target_sockaddr_in6)) { 1762 struct target_sockaddr_in6 *target_in6 = 1763 (struct target_sockaddr_in6 *)target_saddr; 1764 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1765 } 1766 unlock_user(target_saddr, target_addr, len); 1767 1768 return 0; 1769 } 1770 1771 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1772 struct target_msghdr *target_msgh) 1773 { 1774 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1775 abi_long msg_controllen; 1776 abi_ulong target_cmsg_addr; 1777 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1778 socklen_t space = 0; 1779 1780 msg_controllen = tswapal(target_msgh->msg_controllen); 1781 if (msg_controllen < sizeof (struct target_cmsghdr)) 1782 goto the_end; 1783 target_cmsg_addr = tswapal(target_msgh->msg_control); 1784 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1785 target_cmsg_start = target_cmsg; 1786 if (!target_cmsg) 1787 return -TARGET_EFAULT; 1788 1789 while (cmsg && target_cmsg) { 1790 void *data = CMSG_DATA(cmsg); 1791 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1792 1793 int len = tswapal(target_cmsg->cmsg_len) 1794 - sizeof(struct target_cmsghdr); 1795 1796 space += CMSG_SPACE(len); 1797 if (space > msgh->msg_controllen) { 1798 space -= CMSG_SPACE(len); 1799 /* This is a QEMU bug, since we allocated the payload 1800 * area ourselves (unlike overflow in host-to-target 1801 * conversion, which is just the guest giving us a buffer 1802 * that's too small). It can't happen for the payload types 1803 * we currently support; if it becomes an issue in future 1804 * we would need to improve our allocation strategy to 1805 * something more intelligent than "twice the size of the 1806 * target buffer we're reading from". 1807 */ 1808 qemu_log_mask(LOG_UNIMP, 1809 ("Unsupported ancillary data %d/%d: " 1810 "unhandled msg size\n"), 1811 tswap32(target_cmsg->cmsg_level), 1812 tswap32(target_cmsg->cmsg_type)); 1813 break; 1814 } 1815 1816 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1817 cmsg->cmsg_level = SOL_SOCKET; 1818 } else { 1819 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1820 } 1821 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1822 cmsg->cmsg_len = CMSG_LEN(len); 1823 1824 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1825 int *fd = (int *)data; 1826 int *target_fd = (int *)target_data; 1827 int i, numfds = len / sizeof(int); 1828 1829 for (i = 0; i < numfds; i++) { 1830 __get_user(fd[i], target_fd + i); 1831 } 1832 } else if (cmsg->cmsg_level == SOL_SOCKET 1833 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1834 struct ucred *cred = (struct ucred *)data; 1835 struct target_ucred *target_cred = 1836 (struct target_ucred *)target_data; 1837 1838 __get_user(cred->pid, &target_cred->pid); 1839 __get_user(cred->uid, &target_cred->uid); 1840 __get_user(cred->gid, &target_cred->gid); 1841 } else { 1842 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 1843 cmsg->cmsg_level, cmsg->cmsg_type); 1844 memcpy(data, target_data, len); 1845 } 1846 1847 cmsg = CMSG_NXTHDR(msgh, cmsg); 1848 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1849 target_cmsg_start); 1850 } 1851 unlock_user(target_cmsg, target_cmsg_addr, 0); 1852 the_end: 1853 msgh->msg_controllen = space; 1854 return 0; 1855 } 1856 1857 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1858 struct msghdr *msgh) 1859 { 1860 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1861 abi_long msg_controllen; 1862 abi_ulong target_cmsg_addr; 1863 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1864 socklen_t space = 0; 1865 1866 msg_controllen = tswapal(target_msgh->msg_controllen); 1867 if (msg_controllen < sizeof (struct target_cmsghdr)) 1868 goto the_end; 1869 target_cmsg_addr = tswapal(target_msgh->msg_control); 1870 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1871 target_cmsg_start = target_cmsg; 1872 if (!target_cmsg) 1873 return -TARGET_EFAULT; 1874 1875 while (cmsg && target_cmsg) { 1876 void *data = CMSG_DATA(cmsg); 1877 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1878 1879 int len = cmsg->cmsg_len - sizeof(struct cmsghdr); 1880 int tgt_len, tgt_space; 1881 1882 /* We never copy a half-header but may copy half-data; 1883 * this is Linux's behaviour in put_cmsg(). Note that 1884 * truncation here is a guest problem (which we report 1885 * to the guest via the CTRUNC bit), unlike truncation 1886 * in target_to_host_cmsg, which is a QEMU bug. 1887 */ 1888 if (msg_controllen < sizeof(struct target_cmsghdr)) { 1889 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1890 break; 1891 } 1892 1893 if (cmsg->cmsg_level == SOL_SOCKET) { 1894 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1895 } else { 1896 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1897 } 1898 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1899 1900 /* Payload types which need a different size of payload on 1901 * the target must adjust tgt_len here. 1902 */ 1903 tgt_len = len; 1904 switch (cmsg->cmsg_level) { 1905 case SOL_SOCKET: 1906 switch (cmsg->cmsg_type) { 1907 case SO_TIMESTAMP: 1908 tgt_len = sizeof(struct target_timeval); 1909 break; 1910 default: 1911 break; 1912 } 1913 break; 1914 default: 1915 break; 1916 } 1917 1918 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) { 1919 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1920 tgt_len = msg_controllen - sizeof(struct target_cmsghdr); 1921 } 1922 1923 /* We must now copy-and-convert len bytes of payload 1924 * into tgt_len bytes of destination space. Bear in mind 1925 * that in both source and destination we may be dealing 1926 * with a truncated value! 1927 */ 1928 switch (cmsg->cmsg_level) { 1929 case SOL_SOCKET: 1930 switch (cmsg->cmsg_type) { 1931 case SCM_RIGHTS: 1932 { 1933 int *fd = (int *)data; 1934 int *target_fd = (int *)target_data; 1935 int i, numfds = tgt_len / sizeof(int); 1936 1937 for (i = 0; i < numfds; i++) { 1938 __put_user(fd[i], target_fd + i); 1939 } 1940 break; 1941 } 1942 case SO_TIMESTAMP: 1943 { 1944 struct timeval *tv = (struct timeval *)data; 1945 struct target_timeval *target_tv = 1946 (struct target_timeval *)target_data; 1947 1948 if (len != sizeof(struct timeval) || 1949 tgt_len != sizeof(struct target_timeval)) { 1950 goto unimplemented; 1951 } 1952 1953 /* copy struct timeval to target */ 1954 __put_user(tv->tv_sec, &target_tv->tv_sec); 1955 __put_user(tv->tv_usec, &target_tv->tv_usec); 1956 break; 1957 } 1958 case SCM_CREDENTIALS: 1959 { 1960 struct ucred *cred = (struct ucred *)data; 1961 struct target_ucred *target_cred = 1962 (struct target_ucred *)target_data; 1963 1964 __put_user(cred->pid, &target_cred->pid); 1965 __put_user(cred->uid, &target_cred->uid); 1966 __put_user(cred->gid, &target_cred->gid); 1967 break; 1968 } 1969 default: 1970 goto unimplemented; 1971 } 1972 break; 1973 1974 case SOL_IP: 1975 switch (cmsg->cmsg_type) { 1976 case IP_TTL: 1977 { 1978 uint32_t *v = (uint32_t *)data; 1979 uint32_t *t_int = (uint32_t *)target_data; 1980 1981 if (len != sizeof(uint32_t) || 1982 tgt_len != sizeof(uint32_t)) { 1983 goto unimplemented; 1984 } 1985 __put_user(*v, t_int); 1986 break; 1987 } 1988 case IP_RECVERR: 1989 { 1990 struct errhdr_t { 1991 struct sock_extended_err ee; 1992 struct sockaddr_in offender; 1993 }; 1994 struct errhdr_t *errh = (struct errhdr_t *)data; 1995 struct errhdr_t *target_errh = 1996 (struct errhdr_t *)target_data; 1997 1998 if (len != sizeof(struct errhdr_t) || 1999 tgt_len != sizeof(struct errhdr_t)) { 2000 goto unimplemented; 2001 } 2002 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2003 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2004 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2005 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2006 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2007 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2008 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2009 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2010 (void *) &errh->offender, sizeof(errh->offender)); 2011 break; 2012 } 2013 default: 2014 goto unimplemented; 2015 } 2016 break; 2017 2018 case SOL_IPV6: 2019 switch (cmsg->cmsg_type) { 2020 case IPV6_HOPLIMIT: 2021 { 2022 uint32_t *v = (uint32_t *)data; 2023 uint32_t *t_int = (uint32_t *)target_data; 2024 2025 if (len != sizeof(uint32_t) || 2026 tgt_len != sizeof(uint32_t)) { 2027 goto unimplemented; 2028 } 2029 __put_user(*v, t_int); 2030 break; 2031 } 2032 case IPV6_RECVERR: 2033 { 2034 struct errhdr6_t { 2035 struct sock_extended_err ee; 2036 struct sockaddr_in6 offender; 2037 }; 2038 struct errhdr6_t *errh = (struct errhdr6_t *)data; 2039 struct errhdr6_t *target_errh = 2040 (struct errhdr6_t *)target_data; 2041 2042 if (len != sizeof(struct errhdr6_t) || 2043 tgt_len != sizeof(struct errhdr6_t)) { 2044 goto unimplemented; 2045 } 2046 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 2047 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 2048 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 2049 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 2050 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 2051 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 2052 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 2053 host_to_target_sockaddr((unsigned long) &target_errh->offender, 2054 (void *) &errh->offender, sizeof(errh->offender)); 2055 break; 2056 } 2057 default: 2058 goto unimplemented; 2059 } 2060 break; 2061 2062 default: 2063 unimplemented: 2064 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n", 2065 cmsg->cmsg_level, cmsg->cmsg_type); 2066 memcpy(target_data, data, MIN(len, tgt_len)); 2067 if (tgt_len > len) { 2068 memset(target_data + len, 0, tgt_len - len); 2069 } 2070 } 2071 2072 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len)); 2073 tgt_space = TARGET_CMSG_SPACE(tgt_len); 2074 if (msg_controllen < tgt_space) { 2075 tgt_space = msg_controllen; 2076 } 2077 msg_controllen -= tgt_space; 2078 space += tgt_space; 2079 cmsg = CMSG_NXTHDR(msgh, cmsg); 2080 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 2081 target_cmsg_start); 2082 } 2083 unlock_user(target_cmsg, target_cmsg_addr, space); 2084 the_end: 2085 target_msgh->msg_controllen = tswapal(space); 2086 return 0; 2087 } 2088 2089 /* do_setsockopt() Must return target values and target errnos. */ 2090 static abi_long do_setsockopt(int sockfd, int level, int optname, 2091 abi_ulong optval_addr, socklen_t optlen) 2092 { 2093 abi_long ret; 2094 int val; 2095 struct ip_mreqn *ip_mreq; 2096 struct ip_mreq_source *ip_mreq_source; 2097 2098 switch(level) { 2099 case SOL_TCP: 2100 case SOL_UDP: 2101 /* TCP and UDP options all take an 'int' value. */ 2102 if (optlen < sizeof(uint32_t)) 2103 return -TARGET_EINVAL; 2104 2105 if (get_user_u32(val, optval_addr)) 2106 return -TARGET_EFAULT; 2107 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2108 break; 2109 case SOL_IP: 2110 switch(optname) { 2111 case IP_TOS: 2112 case IP_TTL: 2113 case IP_HDRINCL: 2114 case IP_ROUTER_ALERT: 2115 case IP_RECVOPTS: 2116 case IP_RETOPTS: 2117 case IP_PKTINFO: 2118 case IP_MTU_DISCOVER: 2119 case IP_RECVERR: 2120 case IP_RECVTTL: 2121 case IP_RECVTOS: 2122 #ifdef IP_FREEBIND 2123 case IP_FREEBIND: 2124 #endif 2125 case IP_MULTICAST_TTL: 2126 case IP_MULTICAST_LOOP: 2127 val = 0; 2128 if (optlen >= sizeof(uint32_t)) { 2129 if (get_user_u32(val, optval_addr)) 2130 return -TARGET_EFAULT; 2131 } else if (optlen >= 1) { 2132 if (get_user_u8(val, optval_addr)) 2133 return -TARGET_EFAULT; 2134 } 2135 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2136 break; 2137 case IP_ADD_MEMBERSHIP: 2138 case IP_DROP_MEMBERSHIP: 2139 if (optlen < sizeof (struct target_ip_mreq) || 2140 optlen > sizeof (struct target_ip_mreqn)) 2141 return -TARGET_EINVAL; 2142 2143 ip_mreq = (struct ip_mreqn *) alloca(optlen); 2144 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 2145 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 2146 break; 2147 2148 case IP_BLOCK_SOURCE: 2149 case IP_UNBLOCK_SOURCE: 2150 case IP_ADD_SOURCE_MEMBERSHIP: 2151 case IP_DROP_SOURCE_MEMBERSHIP: 2152 if (optlen != sizeof (struct target_ip_mreq_source)) 2153 return -TARGET_EINVAL; 2154 2155 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2156 if (!ip_mreq_source) { 2157 return -TARGET_EFAULT; 2158 } 2159 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 2160 unlock_user (ip_mreq_source, optval_addr, 0); 2161 break; 2162 2163 default: 2164 goto unimplemented; 2165 } 2166 break; 2167 case SOL_IPV6: 2168 switch (optname) { 2169 case IPV6_MTU_DISCOVER: 2170 case IPV6_MTU: 2171 case IPV6_V6ONLY: 2172 case IPV6_RECVPKTINFO: 2173 case IPV6_UNICAST_HOPS: 2174 case IPV6_MULTICAST_HOPS: 2175 case IPV6_MULTICAST_LOOP: 2176 case IPV6_RECVERR: 2177 case IPV6_RECVHOPLIMIT: 2178 case IPV6_2292HOPLIMIT: 2179 case IPV6_CHECKSUM: 2180 case IPV6_ADDRFORM: 2181 case IPV6_2292PKTINFO: 2182 case IPV6_RECVTCLASS: 2183 case IPV6_RECVRTHDR: 2184 case IPV6_2292RTHDR: 2185 case IPV6_RECVHOPOPTS: 2186 case IPV6_2292HOPOPTS: 2187 case IPV6_RECVDSTOPTS: 2188 case IPV6_2292DSTOPTS: 2189 case IPV6_TCLASS: 2190 case IPV6_ADDR_PREFERENCES: 2191 #ifdef IPV6_RECVPATHMTU 2192 case IPV6_RECVPATHMTU: 2193 #endif 2194 #ifdef IPV6_TRANSPARENT 2195 case IPV6_TRANSPARENT: 2196 #endif 2197 #ifdef IPV6_FREEBIND 2198 case IPV6_FREEBIND: 2199 #endif 2200 #ifdef IPV6_RECVORIGDSTADDR 2201 case IPV6_RECVORIGDSTADDR: 2202 #endif 2203 val = 0; 2204 if (optlen < sizeof(uint32_t)) { 2205 return -TARGET_EINVAL; 2206 } 2207 if (get_user_u32(val, optval_addr)) { 2208 return -TARGET_EFAULT; 2209 } 2210 ret = get_errno(setsockopt(sockfd, level, optname, 2211 &val, sizeof(val))); 2212 break; 2213 case IPV6_PKTINFO: 2214 { 2215 struct in6_pktinfo pki; 2216 2217 if (optlen < sizeof(pki)) { 2218 return -TARGET_EINVAL; 2219 } 2220 2221 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2222 return -TARGET_EFAULT; 2223 } 2224 2225 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2226 2227 ret = get_errno(setsockopt(sockfd, level, optname, 2228 &pki, sizeof(pki))); 2229 break; 2230 } 2231 case IPV6_ADD_MEMBERSHIP: 2232 case IPV6_DROP_MEMBERSHIP: 2233 { 2234 struct ipv6_mreq ipv6mreq; 2235 2236 if (optlen < sizeof(ipv6mreq)) { 2237 return -TARGET_EINVAL; 2238 } 2239 2240 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { 2241 return -TARGET_EFAULT; 2242 } 2243 2244 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface); 2245 2246 ret = get_errno(setsockopt(sockfd, level, optname, 2247 &ipv6mreq, sizeof(ipv6mreq))); 2248 break; 2249 } 2250 default: 2251 goto unimplemented; 2252 } 2253 break; 2254 case SOL_ICMPV6: 2255 switch (optname) { 2256 case ICMPV6_FILTER: 2257 { 2258 struct icmp6_filter icmp6f; 2259 2260 if (optlen > sizeof(icmp6f)) { 2261 optlen = sizeof(icmp6f); 2262 } 2263 2264 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2265 return -TARGET_EFAULT; 2266 } 2267 2268 for (val = 0; val < 8; val++) { 2269 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2270 } 2271 2272 ret = get_errno(setsockopt(sockfd, level, optname, 2273 &icmp6f, optlen)); 2274 break; 2275 } 2276 default: 2277 goto unimplemented; 2278 } 2279 break; 2280 case SOL_RAW: 2281 switch (optname) { 2282 case ICMP_FILTER: 2283 case IPV6_CHECKSUM: 2284 /* those take an u32 value */ 2285 if (optlen < sizeof(uint32_t)) { 2286 return -TARGET_EINVAL; 2287 } 2288 2289 if (get_user_u32(val, optval_addr)) { 2290 return -TARGET_EFAULT; 2291 } 2292 ret = get_errno(setsockopt(sockfd, level, optname, 2293 &val, sizeof(val))); 2294 break; 2295 2296 default: 2297 goto unimplemented; 2298 } 2299 break; 2300 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE) 2301 case SOL_ALG: 2302 switch (optname) { 2303 case ALG_SET_KEY: 2304 { 2305 char *alg_key = g_malloc(optlen); 2306 2307 if (!alg_key) { 2308 return -TARGET_ENOMEM; 2309 } 2310 if (copy_from_user(alg_key, optval_addr, optlen)) { 2311 g_free(alg_key); 2312 return -TARGET_EFAULT; 2313 } 2314 ret = get_errno(setsockopt(sockfd, level, optname, 2315 alg_key, optlen)); 2316 g_free(alg_key); 2317 break; 2318 } 2319 case ALG_SET_AEAD_AUTHSIZE: 2320 { 2321 ret = get_errno(setsockopt(sockfd, level, optname, 2322 NULL, optlen)); 2323 break; 2324 } 2325 default: 2326 goto unimplemented; 2327 } 2328 break; 2329 #endif 2330 case TARGET_SOL_SOCKET: 2331 switch (optname) { 2332 case TARGET_SO_RCVTIMEO: 2333 { 2334 struct timeval tv; 2335 2336 optname = SO_RCVTIMEO; 2337 2338 set_timeout: 2339 if (optlen != sizeof(struct target_timeval)) { 2340 return -TARGET_EINVAL; 2341 } 2342 2343 if (copy_from_user_timeval(&tv, optval_addr)) { 2344 return -TARGET_EFAULT; 2345 } 2346 2347 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2348 &tv, sizeof(tv))); 2349 return ret; 2350 } 2351 case TARGET_SO_SNDTIMEO: 2352 optname = SO_SNDTIMEO; 2353 goto set_timeout; 2354 case TARGET_SO_ATTACH_FILTER: 2355 { 2356 struct target_sock_fprog *tfprog; 2357 struct target_sock_filter *tfilter; 2358 struct sock_fprog fprog; 2359 struct sock_filter *filter; 2360 int i; 2361 2362 if (optlen != sizeof(*tfprog)) { 2363 return -TARGET_EINVAL; 2364 } 2365 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 2366 return -TARGET_EFAULT; 2367 } 2368 if (!lock_user_struct(VERIFY_READ, tfilter, 2369 tswapal(tfprog->filter), 0)) { 2370 unlock_user_struct(tfprog, optval_addr, 1); 2371 return -TARGET_EFAULT; 2372 } 2373 2374 fprog.len = tswap16(tfprog->len); 2375 filter = g_try_new(struct sock_filter, fprog.len); 2376 if (filter == NULL) { 2377 unlock_user_struct(tfilter, tfprog->filter, 1); 2378 unlock_user_struct(tfprog, optval_addr, 1); 2379 return -TARGET_ENOMEM; 2380 } 2381 for (i = 0; i < fprog.len; i++) { 2382 filter[i].code = tswap16(tfilter[i].code); 2383 filter[i].jt = tfilter[i].jt; 2384 filter[i].jf = tfilter[i].jf; 2385 filter[i].k = tswap32(tfilter[i].k); 2386 } 2387 fprog.filter = filter; 2388 2389 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 2390 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 2391 g_free(filter); 2392 2393 unlock_user_struct(tfilter, tfprog->filter, 1); 2394 unlock_user_struct(tfprog, optval_addr, 1); 2395 return ret; 2396 } 2397 case TARGET_SO_BINDTODEVICE: 2398 { 2399 char *dev_ifname, *addr_ifname; 2400 2401 if (optlen > IFNAMSIZ - 1) { 2402 optlen = IFNAMSIZ - 1; 2403 } 2404 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2405 if (!dev_ifname) { 2406 return -TARGET_EFAULT; 2407 } 2408 optname = SO_BINDTODEVICE; 2409 addr_ifname = alloca(IFNAMSIZ); 2410 memcpy(addr_ifname, dev_ifname, optlen); 2411 addr_ifname[optlen] = 0; 2412 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 2413 addr_ifname, optlen)); 2414 unlock_user (dev_ifname, optval_addr, 0); 2415 return ret; 2416 } 2417 case TARGET_SO_LINGER: 2418 { 2419 struct linger lg; 2420 struct target_linger *tlg; 2421 2422 if (optlen != sizeof(struct target_linger)) { 2423 return -TARGET_EINVAL; 2424 } 2425 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) { 2426 return -TARGET_EFAULT; 2427 } 2428 __get_user(lg.l_onoff, &tlg->l_onoff); 2429 __get_user(lg.l_linger, &tlg->l_linger); 2430 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER, 2431 &lg, sizeof(lg))); 2432 unlock_user_struct(tlg, optval_addr, 0); 2433 return ret; 2434 } 2435 /* Options with 'int' argument. */ 2436 case TARGET_SO_DEBUG: 2437 optname = SO_DEBUG; 2438 break; 2439 case TARGET_SO_REUSEADDR: 2440 optname = SO_REUSEADDR; 2441 break; 2442 #ifdef SO_REUSEPORT 2443 case TARGET_SO_REUSEPORT: 2444 optname = SO_REUSEPORT; 2445 break; 2446 #endif 2447 case TARGET_SO_TYPE: 2448 optname = SO_TYPE; 2449 break; 2450 case TARGET_SO_ERROR: 2451 optname = SO_ERROR; 2452 break; 2453 case TARGET_SO_DONTROUTE: 2454 optname = SO_DONTROUTE; 2455 break; 2456 case TARGET_SO_BROADCAST: 2457 optname = SO_BROADCAST; 2458 break; 2459 case TARGET_SO_SNDBUF: 2460 optname = SO_SNDBUF; 2461 break; 2462 case TARGET_SO_SNDBUFFORCE: 2463 optname = SO_SNDBUFFORCE; 2464 break; 2465 case TARGET_SO_RCVBUF: 2466 optname = SO_RCVBUF; 2467 break; 2468 case TARGET_SO_RCVBUFFORCE: 2469 optname = SO_RCVBUFFORCE; 2470 break; 2471 case TARGET_SO_KEEPALIVE: 2472 optname = SO_KEEPALIVE; 2473 break; 2474 case TARGET_SO_OOBINLINE: 2475 optname = SO_OOBINLINE; 2476 break; 2477 case TARGET_SO_NO_CHECK: 2478 optname = SO_NO_CHECK; 2479 break; 2480 case TARGET_SO_PRIORITY: 2481 optname = SO_PRIORITY; 2482 break; 2483 #ifdef SO_BSDCOMPAT 2484 case TARGET_SO_BSDCOMPAT: 2485 optname = SO_BSDCOMPAT; 2486 break; 2487 #endif 2488 case TARGET_SO_PASSCRED: 2489 optname = SO_PASSCRED; 2490 break; 2491 case TARGET_SO_PASSSEC: 2492 optname = SO_PASSSEC; 2493 break; 2494 case TARGET_SO_TIMESTAMP: 2495 optname = SO_TIMESTAMP; 2496 break; 2497 case TARGET_SO_RCVLOWAT: 2498 optname = SO_RCVLOWAT; 2499 break; 2500 default: 2501 goto unimplemented; 2502 } 2503 if (optlen < sizeof(uint32_t)) 2504 return -TARGET_EINVAL; 2505 2506 if (get_user_u32(val, optval_addr)) 2507 return -TARGET_EFAULT; 2508 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 2509 break; 2510 #ifdef SOL_NETLINK 2511 case SOL_NETLINK: 2512 switch (optname) { 2513 case NETLINK_PKTINFO: 2514 case NETLINK_ADD_MEMBERSHIP: 2515 case NETLINK_DROP_MEMBERSHIP: 2516 case NETLINK_BROADCAST_ERROR: 2517 case NETLINK_NO_ENOBUFS: 2518 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2519 case NETLINK_LISTEN_ALL_NSID: 2520 case NETLINK_CAP_ACK: 2521 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2522 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2523 case NETLINK_EXT_ACK: 2524 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2525 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2526 case NETLINK_GET_STRICT_CHK: 2527 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2528 break; 2529 default: 2530 goto unimplemented; 2531 } 2532 val = 0; 2533 if (optlen < sizeof(uint32_t)) { 2534 return -TARGET_EINVAL; 2535 } 2536 if (get_user_u32(val, optval_addr)) { 2537 return -TARGET_EFAULT; 2538 } 2539 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val, 2540 sizeof(val))); 2541 break; 2542 #endif /* SOL_NETLINK */ 2543 default: 2544 unimplemented: 2545 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n", 2546 level, optname); 2547 ret = -TARGET_ENOPROTOOPT; 2548 } 2549 return ret; 2550 } 2551 2552 /* do_getsockopt() Must return target values and target errnos. */ 2553 static abi_long do_getsockopt(int sockfd, int level, int optname, 2554 abi_ulong optval_addr, abi_ulong optlen) 2555 { 2556 abi_long ret; 2557 int len, val; 2558 socklen_t lv; 2559 2560 switch(level) { 2561 case TARGET_SOL_SOCKET: 2562 level = SOL_SOCKET; 2563 switch (optname) { 2564 /* These don't just return a single integer */ 2565 case TARGET_SO_PEERNAME: 2566 goto unimplemented; 2567 case TARGET_SO_RCVTIMEO: { 2568 struct timeval tv; 2569 socklen_t tvlen; 2570 2571 optname = SO_RCVTIMEO; 2572 2573 get_timeout: 2574 if (get_user_u32(len, optlen)) { 2575 return -TARGET_EFAULT; 2576 } 2577 if (len < 0) { 2578 return -TARGET_EINVAL; 2579 } 2580 2581 tvlen = sizeof(tv); 2582 ret = get_errno(getsockopt(sockfd, level, optname, 2583 &tv, &tvlen)); 2584 if (ret < 0) { 2585 return ret; 2586 } 2587 if (len > sizeof(struct target_timeval)) { 2588 len = sizeof(struct target_timeval); 2589 } 2590 if (copy_to_user_timeval(optval_addr, &tv)) { 2591 return -TARGET_EFAULT; 2592 } 2593 if (put_user_u32(len, optlen)) { 2594 return -TARGET_EFAULT; 2595 } 2596 break; 2597 } 2598 case TARGET_SO_SNDTIMEO: 2599 optname = SO_SNDTIMEO; 2600 goto get_timeout; 2601 case TARGET_SO_PEERCRED: { 2602 struct ucred cr; 2603 socklen_t crlen; 2604 struct target_ucred *tcr; 2605 2606 if (get_user_u32(len, optlen)) { 2607 return -TARGET_EFAULT; 2608 } 2609 if (len < 0) { 2610 return -TARGET_EINVAL; 2611 } 2612 2613 crlen = sizeof(cr); 2614 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 2615 &cr, &crlen)); 2616 if (ret < 0) { 2617 return ret; 2618 } 2619 if (len > crlen) { 2620 len = crlen; 2621 } 2622 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 2623 return -TARGET_EFAULT; 2624 } 2625 __put_user(cr.pid, &tcr->pid); 2626 __put_user(cr.uid, &tcr->uid); 2627 __put_user(cr.gid, &tcr->gid); 2628 unlock_user_struct(tcr, optval_addr, 1); 2629 if (put_user_u32(len, optlen)) { 2630 return -TARGET_EFAULT; 2631 } 2632 break; 2633 } 2634 case TARGET_SO_PEERSEC: { 2635 char *name; 2636 2637 if (get_user_u32(len, optlen)) { 2638 return -TARGET_EFAULT; 2639 } 2640 if (len < 0) { 2641 return -TARGET_EINVAL; 2642 } 2643 name = lock_user(VERIFY_WRITE, optval_addr, len, 0); 2644 if (!name) { 2645 return -TARGET_EFAULT; 2646 } 2647 lv = len; 2648 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC, 2649 name, &lv)); 2650 if (put_user_u32(lv, optlen)) { 2651 ret = -TARGET_EFAULT; 2652 } 2653 unlock_user(name, optval_addr, lv); 2654 break; 2655 } 2656 case TARGET_SO_LINGER: 2657 { 2658 struct linger lg; 2659 socklen_t lglen; 2660 struct target_linger *tlg; 2661 2662 if (get_user_u32(len, optlen)) { 2663 return -TARGET_EFAULT; 2664 } 2665 if (len < 0) { 2666 return -TARGET_EINVAL; 2667 } 2668 2669 lglen = sizeof(lg); 2670 ret = get_errno(getsockopt(sockfd, level, SO_LINGER, 2671 &lg, &lglen)); 2672 if (ret < 0) { 2673 return ret; 2674 } 2675 if (len > lglen) { 2676 len = lglen; 2677 } 2678 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) { 2679 return -TARGET_EFAULT; 2680 } 2681 __put_user(lg.l_onoff, &tlg->l_onoff); 2682 __put_user(lg.l_linger, &tlg->l_linger); 2683 unlock_user_struct(tlg, optval_addr, 1); 2684 if (put_user_u32(len, optlen)) { 2685 return -TARGET_EFAULT; 2686 } 2687 break; 2688 } 2689 /* Options with 'int' argument. */ 2690 case TARGET_SO_DEBUG: 2691 optname = SO_DEBUG; 2692 goto int_case; 2693 case TARGET_SO_REUSEADDR: 2694 optname = SO_REUSEADDR; 2695 goto int_case; 2696 #ifdef SO_REUSEPORT 2697 case TARGET_SO_REUSEPORT: 2698 optname = SO_REUSEPORT; 2699 goto int_case; 2700 #endif 2701 case TARGET_SO_TYPE: 2702 optname = SO_TYPE; 2703 goto int_case; 2704 case TARGET_SO_ERROR: 2705 optname = SO_ERROR; 2706 goto int_case; 2707 case TARGET_SO_DONTROUTE: 2708 optname = SO_DONTROUTE; 2709 goto int_case; 2710 case TARGET_SO_BROADCAST: 2711 optname = SO_BROADCAST; 2712 goto int_case; 2713 case TARGET_SO_SNDBUF: 2714 optname = SO_SNDBUF; 2715 goto int_case; 2716 case TARGET_SO_RCVBUF: 2717 optname = SO_RCVBUF; 2718 goto int_case; 2719 case TARGET_SO_KEEPALIVE: 2720 optname = SO_KEEPALIVE; 2721 goto int_case; 2722 case TARGET_SO_OOBINLINE: 2723 optname = SO_OOBINLINE; 2724 goto int_case; 2725 case TARGET_SO_NO_CHECK: 2726 optname = SO_NO_CHECK; 2727 goto int_case; 2728 case TARGET_SO_PRIORITY: 2729 optname = SO_PRIORITY; 2730 goto int_case; 2731 #ifdef SO_BSDCOMPAT 2732 case TARGET_SO_BSDCOMPAT: 2733 optname = SO_BSDCOMPAT; 2734 goto int_case; 2735 #endif 2736 case TARGET_SO_PASSCRED: 2737 optname = SO_PASSCRED; 2738 goto int_case; 2739 case TARGET_SO_TIMESTAMP: 2740 optname = SO_TIMESTAMP; 2741 goto int_case; 2742 case TARGET_SO_RCVLOWAT: 2743 optname = SO_RCVLOWAT; 2744 goto int_case; 2745 case TARGET_SO_ACCEPTCONN: 2746 optname = SO_ACCEPTCONN; 2747 goto int_case; 2748 case TARGET_SO_PROTOCOL: 2749 optname = SO_PROTOCOL; 2750 goto int_case; 2751 case TARGET_SO_DOMAIN: 2752 optname = SO_DOMAIN; 2753 goto int_case; 2754 default: 2755 goto int_case; 2756 } 2757 break; 2758 case SOL_TCP: 2759 case SOL_UDP: 2760 /* TCP and UDP options all take an 'int' value. */ 2761 int_case: 2762 if (get_user_u32(len, optlen)) 2763 return -TARGET_EFAULT; 2764 if (len < 0) 2765 return -TARGET_EINVAL; 2766 lv = sizeof(lv); 2767 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2768 if (ret < 0) 2769 return ret; 2770 if (optname == SO_TYPE) { 2771 val = host_to_target_sock_type(val); 2772 } 2773 if (len > lv) 2774 len = lv; 2775 if (len == 4) { 2776 if (put_user_u32(val, optval_addr)) 2777 return -TARGET_EFAULT; 2778 } else { 2779 if (put_user_u8(val, optval_addr)) 2780 return -TARGET_EFAULT; 2781 } 2782 if (put_user_u32(len, optlen)) 2783 return -TARGET_EFAULT; 2784 break; 2785 case SOL_IP: 2786 switch(optname) { 2787 case IP_TOS: 2788 case IP_TTL: 2789 case IP_HDRINCL: 2790 case IP_ROUTER_ALERT: 2791 case IP_RECVOPTS: 2792 case IP_RETOPTS: 2793 case IP_PKTINFO: 2794 case IP_MTU_DISCOVER: 2795 case IP_RECVERR: 2796 case IP_RECVTOS: 2797 #ifdef IP_FREEBIND 2798 case IP_FREEBIND: 2799 #endif 2800 case IP_MULTICAST_TTL: 2801 case IP_MULTICAST_LOOP: 2802 if (get_user_u32(len, optlen)) 2803 return -TARGET_EFAULT; 2804 if (len < 0) 2805 return -TARGET_EINVAL; 2806 lv = sizeof(lv); 2807 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2808 if (ret < 0) 2809 return ret; 2810 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2811 len = 1; 2812 if (put_user_u32(len, optlen) 2813 || put_user_u8(val, optval_addr)) 2814 return -TARGET_EFAULT; 2815 } else { 2816 if (len > sizeof(int)) 2817 len = sizeof(int); 2818 if (put_user_u32(len, optlen) 2819 || put_user_u32(val, optval_addr)) 2820 return -TARGET_EFAULT; 2821 } 2822 break; 2823 default: 2824 ret = -TARGET_ENOPROTOOPT; 2825 break; 2826 } 2827 break; 2828 case SOL_IPV6: 2829 switch (optname) { 2830 case IPV6_MTU_DISCOVER: 2831 case IPV6_MTU: 2832 case IPV6_V6ONLY: 2833 case IPV6_RECVPKTINFO: 2834 case IPV6_UNICAST_HOPS: 2835 case IPV6_MULTICAST_HOPS: 2836 case IPV6_MULTICAST_LOOP: 2837 case IPV6_RECVERR: 2838 case IPV6_RECVHOPLIMIT: 2839 case IPV6_2292HOPLIMIT: 2840 case IPV6_CHECKSUM: 2841 case IPV6_ADDRFORM: 2842 case IPV6_2292PKTINFO: 2843 case IPV6_RECVTCLASS: 2844 case IPV6_RECVRTHDR: 2845 case IPV6_2292RTHDR: 2846 case IPV6_RECVHOPOPTS: 2847 case IPV6_2292HOPOPTS: 2848 case IPV6_RECVDSTOPTS: 2849 case IPV6_2292DSTOPTS: 2850 case IPV6_TCLASS: 2851 case IPV6_ADDR_PREFERENCES: 2852 #ifdef IPV6_RECVPATHMTU 2853 case IPV6_RECVPATHMTU: 2854 #endif 2855 #ifdef IPV6_TRANSPARENT 2856 case IPV6_TRANSPARENT: 2857 #endif 2858 #ifdef IPV6_FREEBIND 2859 case IPV6_FREEBIND: 2860 #endif 2861 #ifdef IPV6_RECVORIGDSTADDR 2862 case IPV6_RECVORIGDSTADDR: 2863 #endif 2864 if (get_user_u32(len, optlen)) 2865 return -TARGET_EFAULT; 2866 if (len < 0) 2867 return -TARGET_EINVAL; 2868 lv = sizeof(lv); 2869 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2870 if (ret < 0) 2871 return ret; 2872 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 2873 len = 1; 2874 if (put_user_u32(len, optlen) 2875 || put_user_u8(val, optval_addr)) 2876 return -TARGET_EFAULT; 2877 } else { 2878 if (len > sizeof(int)) 2879 len = sizeof(int); 2880 if (put_user_u32(len, optlen) 2881 || put_user_u32(val, optval_addr)) 2882 return -TARGET_EFAULT; 2883 } 2884 break; 2885 default: 2886 ret = -TARGET_ENOPROTOOPT; 2887 break; 2888 } 2889 break; 2890 #ifdef SOL_NETLINK 2891 case SOL_NETLINK: 2892 switch (optname) { 2893 case NETLINK_PKTINFO: 2894 case NETLINK_BROADCAST_ERROR: 2895 case NETLINK_NO_ENOBUFS: 2896 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2897 case NETLINK_LISTEN_ALL_NSID: 2898 case NETLINK_CAP_ACK: 2899 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2900 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) 2901 case NETLINK_EXT_ACK: 2902 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2903 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0) 2904 case NETLINK_GET_STRICT_CHK: 2905 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */ 2906 if (get_user_u32(len, optlen)) { 2907 return -TARGET_EFAULT; 2908 } 2909 if (len != sizeof(val)) { 2910 return -TARGET_EINVAL; 2911 } 2912 lv = len; 2913 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 2914 if (ret < 0) { 2915 return ret; 2916 } 2917 if (put_user_u32(lv, optlen) 2918 || put_user_u32(val, optval_addr)) { 2919 return -TARGET_EFAULT; 2920 } 2921 break; 2922 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) 2923 case NETLINK_LIST_MEMBERSHIPS: 2924 { 2925 uint32_t *results; 2926 int i; 2927 if (get_user_u32(len, optlen)) { 2928 return -TARGET_EFAULT; 2929 } 2930 if (len < 0) { 2931 return -TARGET_EINVAL; 2932 } 2933 results = lock_user(VERIFY_WRITE, optval_addr, len, 1); 2934 if (!results && len > 0) { 2935 return -TARGET_EFAULT; 2936 } 2937 lv = len; 2938 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv)); 2939 if (ret < 0) { 2940 unlock_user(results, optval_addr, 0); 2941 return ret; 2942 } 2943 /* swap host endianess to target endianess. */ 2944 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 2945 results[i] = tswap32(results[i]); 2946 } 2947 if (put_user_u32(lv, optlen)) { 2948 return -TARGET_EFAULT; 2949 } 2950 unlock_user(results, optval_addr, 0); 2951 break; 2952 } 2953 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */ 2954 default: 2955 goto unimplemented; 2956 } 2957 break; 2958 #endif /* SOL_NETLINK */ 2959 default: 2960 unimplemented: 2961 qemu_log_mask(LOG_UNIMP, 2962 "getsockopt level=%d optname=%d not yet supported\n", 2963 level, optname); 2964 ret = -TARGET_EOPNOTSUPP; 2965 break; 2966 } 2967 return ret; 2968 } 2969 2970 /* Convert target low/high pair representing file offset into the host 2971 * low/high pair. This function doesn't handle offsets bigger than 64 bits 2972 * as the kernel doesn't handle them either. 2973 */ 2974 static void target_to_host_low_high(abi_ulong tlow, 2975 abi_ulong thigh, 2976 unsigned long *hlow, 2977 unsigned long *hhigh) 2978 { 2979 uint64_t off = tlow | 2980 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) << 2981 TARGET_LONG_BITS / 2; 2982 2983 *hlow = off; 2984 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2; 2985 } 2986 2987 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 2988 abi_ulong count, int copy) 2989 { 2990 struct target_iovec *target_vec; 2991 struct iovec *vec; 2992 abi_ulong total_len, max_len; 2993 int i; 2994 int err = 0; 2995 bool bad_address = false; 2996 2997 if (count == 0) { 2998 errno = 0; 2999 return NULL; 3000 } 3001 if (count > IOV_MAX) { 3002 errno = EINVAL; 3003 return NULL; 3004 } 3005 3006 vec = g_try_new0(struct iovec, count); 3007 if (vec == NULL) { 3008 errno = ENOMEM; 3009 return NULL; 3010 } 3011 3012 target_vec = lock_user(VERIFY_READ, target_addr, 3013 count * sizeof(struct target_iovec), 1); 3014 if (target_vec == NULL) { 3015 err = EFAULT; 3016 goto fail2; 3017 } 3018 3019 /* ??? If host page size > target page size, this will result in a 3020 value larger than what we can actually support. */ 3021 max_len = 0x7fffffff & TARGET_PAGE_MASK; 3022 total_len = 0; 3023 3024 for (i = 0; i < count; i++) { 3025 abi_ulong base = tswapal(target_vec[i].iov_base); 3026 abi_long len = tswapal(target_vec[i].iov_len); 3027 3028 if (len < 0) { 3029 err = EINVAL; 3030 goto fail; 3031 } else if (len == 0) { 3032 /* Zero length pointer is ignored. */ 3033 vec[i].iov_base = 0; 3034 } else { 3035 vec[i].iov_base = lock_user(type, base, len, copy); 3036 /* If the first buffer pointer is bad, this is a fault. But 3037 * subsequent bad buffers will result in a partial write; this 3038 * is realized by filling the vector with null pointers and 3039 * zero lengths. */ 3040 if (!vec[i].iov_base) { 3041 if (i == 0) { 3042 err = EFAULT; 3043 goto fail; 3044 } else { 3045 bad_address = true; 3046 } 3047 } 3048 if (bad_address) { 3049 len = 0; 3050 } 3051 if (len > max_len - total_len) { 3052 len = max_len - total_len; 3053 } 3054 } 3055 vec[i].iov_len = len; 3056 total_len += len; 3057 } 3058 3059 unlock_user(target_vec, target_addr, 0); 3060 return vec; 3061 3062 fail: 3063 while (--i >= 0) { 3064 if (tswapal(target_vec[i].iov_len) > 0) { 3065 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 3066 } 3067 } 3068 unlock_user(target_vec, target_addr, 0); 3069 fail2: 3070 g_free(vec); 3071 errno = err; 3072 return NULL; 3073 } 3074 3075 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 3076 abi_ulong count, int copy) 3077 { 3078 struct target_iovec *target_vec; 3079 int i; 3080 3081 target_vec = lock_user(VERIFY_READ, target_addr, 3082 count * sizeof(struct target_iovec), 1); 3083 if (target_vec) { 3084 for (i = 0; i < count; i++) { 3085 abi_ulong base = tswapal(target_vec[i].iov_base); 3086 abi_long len = tswapal(target_vec[i].iov_len); 3087 if (len < 0) { 3088 break; 3089 } 3090 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 3091 } 3092 unlock_user(target_vec, target_addr, 0); 3093 } 3094 3095 g_free(vec); 3096 } 3097 3098 static inline int target_to_host_sock_type(int *type) 3099 { 3100 int host_type = 0; 3101 int target_type = *type; 3102 3103 switch (target_type & TARGET_SOCK_TYPE_MASK) { 3104 case TARGET_SOCK_DGRAM: 3105 host_type = SOCK_DGRAM; 3106 break; 3107 case TARGET_SOCK_STREAM: 3108 host_type = SOCK_STREAM; 3109 break; 3110 default: 3111 host_type = target_type & TARGET_SOCK_TYPE_MASK; 3112 break; 3113 } 3114 if (target_type & TARGET_SOCK_CLOEXEC) { 3115 #if defined(SOCK_CLOEXEC) 3116 host_type |= SOCK_CLOEXEC; 3117 #else 3118 return -TARGET_EINVAL; 3119 #endif 3120 } 3121 if (target_type & TARGET_SOCK_NONBLOCK) { 3122 #if defined(SOCK_NONBLOCK) 3123 host_type |= SOCK_NONBLOCK; 3124 #elif !defined(O_NONBLOCK) 3125 return -TARGET_EINVAL; 3126 #endif 3127 } 3128 *type = host_type; 3129 return 0; 3130 } 3131 3132 /* Try to emulate socket type flags after socket creation. */ 3133 static int sock_flags_fixup(int fd, int target_type) 3134 { 3135 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 3136 if (target_type & TARGET_SOCK_NONBLOCK) { 3137 int flags = fcntl(fd, F_GETFL); 3138 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 3139 close(fd); 3140 return -TARGET_EINVAL; 3141 } 3142 } 3143 #endif 3144 return fd; 3145 } 3146 3147 /* do_socket() Must return target values and target errnos. */ 3148 static abi_long do_socket(int domain, int type, int protocol) 3149 { 3150 int target_type = type; 3151 int ret; 3152 3153 ret = target_to_host_sock_type(&type); 3154 if (ret) { 3155 return ret; 3156 } 3157 3158 if (domain == PF_NETLINK && !( 3159 #ifdef CONFIG_RTNETLINK 3160 protocol == NETLINK_ROUTE || 3161 #endif 3162 protocol == NETLINK_KOBJECT_UEVENT || 3163 protocol == NETLINK_AUDIT)) { 3164 return -TARGET_EPROTONOSUPPORT; 3165 } 3166 3167 if (domain == AF_PACKET || 3168 (domain == AF_INET && type == SOCK_PACKET)) { 3169 protocol = tswap16(protocol); 3170 } 3171 3172 ret = get_errno(socket(domain, type, protocol)); 3173 if (ret >= 0) { 3174 ret = sock_flags_fixup(ret, target_type); 3175 if (type == SOCK_PACKET) { 3176 /* Manage an obsolete case : 3177 * if socket type is SOCK_PACKET, bind by name 3178 */ 3179 fd_trans_register(ret, &target_packet_trans); 3180 } else if (domain == PF_NETLINK) { 3181 switch (protocol) { 3182 #ifdef CONFIG_RTNETLINK 3183 case NETLINK_ROUTE: 3184 fd_trans_register(ret, &target_netlink_route_trans); 3185 break; 3186 #endif 3187 case NETLINK_KOBJECT_UEVENT: 3188 /* nothing to do: messages are strings */ 3189 break; 3190 case NETLINK_AUDIT: 3191 fd_trans_register(ret, &target_netlink_audit_trans); 3192 break; 3193 default: 3194 g_assert_not_reached(); 3195 } 3196 } 3197 } 3198 return ret; 3199 } 3200 3201 /* do_bind() Must return target values and target errnos. */ 3202 static abi_long do_bind(int sockfd, abi_ulong target_addr, 3203 socklen_t addrlen) 3204 { 3205 void *addr; 3206 abi_long ret; 3207 3208 if ((int)addrlen < 0) { 3209 return -TARGET_EINVAL; 3210 } 3211 3212 addr = alloca(addrlen+1); 3213 3214 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3215 if (ret) 3216 return ret; 3217 3218 return get_errno(bind(sockfd, addr, addrlen)); 3219 } 3220 3221 /* do_connect() Must return target values and target errnos. */ 3222 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3223 socklen_t addrlen) 3224 { 3225 void *addr; 3226 abi_long ret; 3227 3228 if ((int)addrlen < 0) { 3229 return -TARGET_EINVAL; 3230 } 3231 3232 addr = alloca(addrlen+1); 3233 3234 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3235 if (ret) 3236 return ret; 3237 3238 return get_errno(safe_connect(sockfd, addr, addrlen)); 3239 } 3240 3241 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3242 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3243 int flags, int send) 3244 { 3245 abi_long ret, len; 3246 struct msghdr msg; 3247 abi_ulong count; 3248 struct iovec *vec; 3249 abi_ulong target_vec; 3250 3251 if (msgp->msg_name) { 3252 msg.msg_namelen = tswap32(msgp->msg_namelen); 3253 msg.msg_name = alloca(msg.msg_namelen+1); 3254 ret = target_to_host_sockaddr(fd, msg.msg_name, 3255 tswapal(msgp->msg_name), 3256 msg.msg_namelen); 3257 if (ret == -TARGET_EFAULT) { 3258 /* For connected sockets msg_name and msg_namelen must 3259 * be ignored, so returning EFAULT immediately is wrong. 3260 * Instead, pass a bad msg_name to the host kernel, and 3261 * let it decide whether to return EFAULT or not. 3262 */ 3263 msg.msg_name = (void *)-1; 3264 } else if (ret) { 3265 goto out2; 3266 } 3267 } else { 3268 msg.msg_name = NULL; 3269 msg.msg_namelen = 0; 3270 } 3271 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3272 msg.msg_control = alloca(msg.msg_controllen); 3273 memset(msg.msg_control, 0, msg.msg_controllen); 3274 3275 msg.msg_flags = tswap32(msgp->msg_flags); 3276 3277 count = tswapal(msgp->msg_iovlen); 3278 target_vec = tswapal(msgp->msg_iov); 3279 3280 if (count > IOV_MAX) { 3281 /* sendrcvmsg returns a different errno for this condition than 3282 * readv/writev, so we must catch it here before lock_iovec() does. 3283 */ 3284 ret = -TARGET_EMSGSIZE; 3285 goto out2; 3286 } 3287 3288 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3289 target_vec, count, send); 3290 if (vec == NULL) { 3291 ret = -host_to_target_errno(errno); 3292 goto out2; 3293 } 3294 msg.msg_iovlen = count; 3295 msg.msg_iov = vec; 3296 3297 if (send) { 3298 if (fd_trans_target_to_host_data(fd)) { 3299 void *host_msg; 3300 3301 host_msg = g_malloc(msg.msg_iov->iov_len); 3302 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3303 ret = fd_trans_target_to_host_data(fd)(host_msg, 3304 msg.msg_iov->iov_len); 3305 if (ret >= 0) { 3306 msg.msg_iov->iov_base = host_msg; 3307 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3308 } 3309 g_free(host_msg); 3310 } else { 3311 ret = target_to_host_cmsg(&msg, msgp); 3312 if (ret == 0) { 3313 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3314 } 3315 } 3316 } else { 3317 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3318 if (!is_error(ret)) { 3319 len = ret; 3320 if (fd_trans_host_to_target_data(fd)) { 3321 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3322 MIN(msg.msg_iov->iov_len, len)); 3323 } else { 3324 ret = host_to_target_cmsg(msgp, &msg); 3325 } 3326 if (!is_error(ret)) { 3327 msgp->msg_namelen = tswap32(msg.msg_namelen); 3328 msgp->msg_flags = tswap32(msg.msg_flags); 3329 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3330 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3331 msg.msg_name, msg.msg_namelen); 3332 if (ret) { 3333 goto out; 3334 } 3335 } 3336 3337 ret = len; 3338 } 3339 } 3340 } 3341 3342 out: 3343 unlock_iovec(vec, target_vec, count, !send); 3344 out2: 3345 return ret; 3346 } 3347 3348 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3349 int flags, int send) 3350 { 3351 abi_long ret; 3352 struct target_msghdr *msgp; 3353 3354 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3355 msgp, 3356 target_msg, 3357 send ? 1 : 0)) { 3358 return -TARGET_EFAULT; 3359 } 3360 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3361 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3362 return ret; 3363 } 3364 3365 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3366 * so it might not have this *mmsg-specific flag either. 3367 */ 3368 #ifndef MSG_WAITFORONE 3369 #define MSG_WAITFORONE 0x10000 3370 #endif 3371 3372 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3373 unsigned int vlen, unsigned int flags, 3374 int send) 3375 { 3376 struct target_mmsghdr *mmsgp; 3377 abi_long ret = 0; 3378 int i; 3379 3380 if (vlen > UIO_MAXIOV) { 3381 vlen = UIO_MAXIOV; 3382 } 3383 3384 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3385 if (!mmsgp) { 3386 return -TARGET_EFAULT; 3387 } 3388 3389 for (i = 0; i < vlen; i++) { 3390 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3391 if (is_error(ret)) { 3392 break; 3393 } 3394 mmsgp[i].msg_len = tswap32(ret); 3395 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3396 if (flags & MSG_WAITFORONE) { 3397 flags |= MSG_DONTWAIT; 3398 } 3399 } 3400 3401 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3402 3403 /* Return number of datagrams sent if we sent any at all; 3404 * otherwise return the error. 3405 */ 3406 if (i) { 3407 return i; 3408 } 3409 return ret; 3410 } 3411 3412 /* do_accept4() Must return target values and target errnos. */ 3413 static abi_long do_accept4(int fd, abi_ulong target_addr, 3414 abi_ulong target_addrlen_addr, int flags) 3415 { 3416 socklen_t addrlen, ret_addrlen; 3417 void *addr; 3418 abi_long ret; 3419 int host_flags; 3420 3421 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 3422 3423 if (target_addr == 0) { 3424 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3425 } 3426 3427 /* linux returns EFAULT if addrlen pointer is invalid */ 3428 if (get_user_u32(addrlen, target_addrlen_addr)) 3429 return -TARGET_EFAULT; 3430 3431 if ((int)addrlen < 0) { 3432 return -TARGET_EINVAL; 3433 } 3434 3435 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3436 return -TARGET_EFAULT; 3437 } 3438 3439 addr = alloca(addrlen); 3440 3441 ret_addrlen = addrlen; 3442 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags)); 3443 if (!is_error(ret)) { 3444 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3445 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3446 ret = -TARGET_EFAULT; 3447 } 3448 } 3449 return ret; 3450 } 3451 3452 /* do_getpeername() Must return target values and target errnos. */ 3453 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3454 abi_ulong target_addrlen_addr) 3455 { 3456 socklen_t addrlen, ret_addrlen; 3457 void *addr; 3458 abi_long ret; 3459 3460 if (get_user_u32(addrlen, target_addrlen_addr)) 3461 return -TARGET_EFAULT; 3462 3463 if ((int)addrlen < 0) { 3464 return -TARGET_EINVAL; 3465 } 3466 3467 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3468 return -TARGET_EFAULT; 3469 } 3470 3471 addr = alloca(addrlen); 3472 3473 ret_addrlen = addrlen; 3474 ret = get_errno(getpeername(fd, addr, &ret_addrlen)); 3475 if (!is_error(ret)) { 3476 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3477 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3478 ret = -TARGET_EFAULT; 3479 } 3480 } 3481 return ret; 3482 } 3483 3484 /* do_getsockname() Must return target values and target errnos. */ 3485 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3486 abi_ulong target_addrlen_addr) 3487 { 3488 socklen_t addrlen, ret_addrlen; 3489 void *addr; 3490 abi_long ret; 3491 3492 if (get_user_u32(addrlen, target_addrlen_addr)) 3493 return -TARGET_EFAULT; 3494 3495 if ((int)addrlen < 0) { 3496 return -TARGET_EINVAL; 3497 } 3498 3499 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { 3500 return -TARGET_EFAULT; 3501 } 3502 3503 addr = alloca(addrlen); 3504 3505 ret_addrlen = addrlen; 3506 ret = get_errno(getsockname(fd, addr, &ret_addrlen)); 3507 if (!is_error(ret)) { 3508 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen)); 3509 if (put_user_u32(ret_addrlen, target_addrlen_addr)) { 3510 ret = -TARGET_EFAULT; 3511 } 3512 } 3513 return ret; 3514 } 3515 3516 /* do_socketpair() Must return target values and target errnos. */ 3517 static abi_long do_socketpair(int domain, int type, int protocol, 3518 abi_ulong target_tab_addr) 3519 { 3520 int tab[2]; 3521 abi_long ret; 3522 3523 target_to_host_sock_type(&type); 3524 3525 ret = get_errno(socketpair(domain, type, protocol, tab)); 3526 if (!is_error(ret)) { 3527 if (put_user_s32(tab[0], target_tab_addr) 3528 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3529 ret = -TARGET_EFAULT; 3530 } 3531 return ret; 3532 } 3533 3534 /* do_sendto() Must return target values and target errnos. */ 3535 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3536 abi_ulong target_addr, socklen_t addrlen) 3537 { 3538 void *addr; 3539 void *host_msg; 3540 void *copy_msg = NULL; 3541 abi_long ret; 3542 3543 if ((int)addrlen < 0) { 3544 return -TARGET_EINVAL; 3545 } 3546 3547 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3548 if (!host_msg) 3549 return -TARGET_EFAULT; 3550 if (fd_trans_target_to_host_data(fd)) { 3551 copy_msg = host_msg; 3552 host_msg = g_malloc(len); 3553 memcpy(host_msg, copy_msg, len); 3554 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3555 if (ret < 0) { 3556 goto fail; 3557 } 3558 } 3559 if (target_addr) { 3560 addr = alloca(addrlen+1); 3561 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3562 if (ret) { 3563 goto fail; 3564 } 3565 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3566 } else { 3567 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3568 } 3569 fail: 3570 if (copy_msg) { 3571 g_free(host_msg); 3572 host_msg = copy_msg; 3573 } 3574 unlock_user(host_msg, msg, 0); 3575 return ret; 3576 } 3577 3578 /* do_recvfrom() Must return target values and target errnos. */ 3579 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 3580 abi_ulong target_addr, 3581 abi_ulong target_addrlen) 3582 { 3583 socklen_t addrlen, ret_addrlen; 3584 void *addr; 3585 void *host_msg; 3586 abi_long ret; 3587 3588 if (!msg) { 3589 host_msg = NULL; 3590 } else { 3591 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 3592 if (!host_msg) { 3593 return -TARGET_EFAULT; 3594 } 3595 } 3596 if (target_addr) { 3597 if (get_user_u32(addrlen, target_addrlen)) { 3598 ret = -TARGET_EFAULT; 3599 goto fail; 3600 } 3601 if ((int)addrlen < 0) { 3602 ret = -TARGET_EINVAL; 3603 goto fail; 3604 } 3605 addr = alloca(addrlen); 3606 ret_addrlen = addrlen; 3607 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 3608 addr, &ret_addrlen)); 3609 } else { 3610 addr = NULL; /* To keep compiler quiet. */ 3611 addrlen = 0; /* To keep compiler quiet. */ 3612 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 3613 } 3614 if (!is_error(ret)) { 3615 if (fd_trans_host_to_target_data(fd)) { 3616 abi_long trans; 3617 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len)); 3618 if (is_error(trans)) { 3619 ret = trans; 3620 goto fail; 3621 } 3622 } 3623 if (target_addr) { 3624 host_to_target_sockaddr(target_addr, addr, 3625 MIN(addrlen, ret_addrlen)); 3626 if (put_user_u32(ret_addrlen, target_addrlen)) { 3627 ret = -TARGET_EFAULT; 3628 goto fail; 3629 } 3630 } 3631 unlock_user(host_msg, msg, len); 3632 } else { 3633 fail: 3634 unlock_user(host_msg, msg, 0); 3635 } 3636 return ret; 3637 } 3638 3639 #ifdef TARGET_NR_socketcall 3640 /* do_socketcall() must return target values and target errnos. */ 3641 static abi_long do_socketcall(int num, abi_ulong vptr) 3642 { 3643 static const unsigned nargs[] = { /* number of arguments per operation */ 3644 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 3645 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 3646 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 3647 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 3648 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 3649 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 3650 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 3651 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 3652 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 3653 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 3654 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 3655 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 3656 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 3657 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3658 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 3659 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 3660 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 3661 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 3662 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 3663 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 3664 }; 3665 abi_long a[6]; /* max 6 args */ 3666 unsigned i; 3667 3668 /* check the range of the first argument num */ 3669 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 3670 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 3671 return -TARGET_EINVAL; 3672 } 3673 /* ensure we have space for args */ 3674 if (nargs[num] > ARRAY_SIZE(a)) { 3675 return -TARGET_EINVAL; 3676 } 3677 /* collect the arguments in a[] according to nargs[] */ 3678 for (i = 0; i < nargs[num]; ++i) { 3679 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 3680 return -TARGET_EFAULT; 3681 } 3682 } 3683 /* now when we have the args, invoke the appropriate underlying function */ 3684 switch (num) { 3685 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 3686 return do_socket(a[0], a[1], a[2]); 3687 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 3688 return do_bind(a[0], a[1], a[2]); 3689 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 3690 return do_connect(a[0], a[1], a[2]); 3691 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 3692 return get_errno(listen(a[0], a[1])); 3693 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 3694 return do_accept4(a[0], a[1], a[2], 0); 3695 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 3696 return do_getsockname(a[0], a[1], a[2]); 3697 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 3698 return do_getpeername(a[0], a[1], a[2]); 3699 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 3700 return do_socketpair(a[0], a[1], a[2], a[3]); 3701 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 3702 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 3703 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 3704 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 3705 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 3706 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 3707 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 3708 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 3709 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 3710 return get_errno(shutdown(a[0], a[1])); 3711 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3712 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 3713 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 3714 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 3715 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 3716 return do_sendrecvmsg(a[0], a[1], a[2], 1); 3717 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 3718 return do_sendrecvmsg(a[0], a[1], a[2], 0); 3719 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 3720 return do_accept4(a[0], a[1], a[2], a[3]); 3721 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 3722 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 3723 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 3724 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 3725 default: 3726 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); 3727 return -TARGET_EINVAL; 3728 } 3729 } 3730 #endif 3731 3732 #define N_SHM_REGIONS 32 3733 3734 static struct shm_region { 3735 abi_ulong start; 3736 abi_ulong size; 3737 bool in_use; 3738 } shm_regions[N_SHM_REGIONS]; 3739 3740 #ifndef TARGET_SEMID64_DS 3741 /* asm-generic version of this struct */ 3742 struct target_semid64_ds 3743 { 3744 struct target_ipc_perm sem_perm; 3745 abi_ulong sem_otime; 3746 #if TARGET_ABI_BITS == 32 3747 abi_ulong __unused1; 3748 #endif 3749 abi_ulong sem_ctime; 3750 #if TARGET_ABI_BITS == 32 3751 abi_ulong __unused2; 3752 #endif 3753 abi_ulong sem_nsems; 3754 abi_ulong __unused3; 3755 abi_ulong __unused4; 3756 }; 3757 #endif 3758 3759 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 3760 abi_ulong target_addr) 3761 { 3762 struct target_ipc_perm *target_ip; 3763 struct target_semid64_ds *target_sd; 3764 3765 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3766 return -TARGET_EFAULT; 3767 target_ip = &(target_sd->sem_perm); 3768 host_ip->__key = tswap32(target_ip->__key); 3769 host_ip->uid = tswap32(target_ip->uid); 3770 host_ip->gid = tswap32(target_ip->gid); 3771 host_ip->cuid = tswap32(target_ip->cuid); 3772 host_ip->cgid = tswap32(target_ip->cgid); 3773 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3774 host_ip->mode = tswap32(target_ip->mode); 3775 #else 3776 host_ip->mode = tswap16(target_ip->mode); 3777 #endif 3778 #if defined(TARGET_PPC) 3779 host_ip->__seq = tswap32(target_ip->__seq); 3780 #else 3781 host_ip->__seq = tswap16(target_ip->__seq); 3782 #endif 3783 unlock_user_struct(target_sd, target_addr, 0); 3784 return 0; 3785 } 3786 3787 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 3788 struct ipc_perm *host_ip) 3789 { 3790 struct target_ipc_perm *target_ip; 3791 struct target_semid64_ds *target_sd; 3792 3793 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3794 return -TARGET_EFAULT; 3795 target_ip = &(target_sd->sem_perm); 3796 target_ip->__key = tswap32(host_ip->__key); 3797 target_ip->uid = tswap32(host_ip->uid); 3798 target_ip->gid = tswap32(host_ip->gid); 3799 target_ip->cuid = tswap32(host_ip->cuid); 3800 target_ip->cgid = tswap32(host_ip->cgid); 3801 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 3802 target_ip->mode = tswap32(host_ip->mode); 3803 #else 3804 target_ip->mode = tswap16(host_ip->mode); 3805 #endif 3806 #if defined(TARGET_PPC) 3807 target_ip->__seq = tswap32(host_ip->__seq); 3808 #else 3809 target_ip->__seq = tswap16(host_ip->__seq); 3810 #endif 3811 unlock_user_struct(target_sd, target_addr, 1); 3812 return 0; 3813 } 3814 3815 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 3816 abi_ulong target_addr) 3817 { 3818 struct target_semid64_ds *target_sd; 3819 3820 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 3821 return -TARGET_EFAULT; 3822 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 3823 return -TARGET_EFAULT; 3824 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 3825 host_sd->sem_otime = tswapal(target_sd->sem_otime); 3826 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 3827 unlock_user_struct(target_sd, target_addr, 0); 3828 return 0; 3829 } 3830 3831 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 3832 struct semid_ds *host_sd) 3833 { 3834 struct target_semid64_ds *target_sd; 3835 3836 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 3837 return -TARGET_EFAULT; 3838 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 3839 return -TARGET_EFAULT; 3840 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 3841 target_sd->sem_otime = tswapal(host_sd->sem_otime); 3842 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 3843 unlock_user_struct(target_sd, target_addr, 1); 3844 return 0; 3845 } 3846 3847 struct target_seminfo { 3848 int semmap; 3849 int semmni; 3850 int semmns; 3851 int semmnu; 3852 int semmsl; 3853 int semopm; 3854 int semume; 3855 int semusz; 3856 int semvmx; 3857 int semaem; 3858 }; 3859 3860 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 3861 struct seminfo *host_seminfo) 3862 { 3863 struct target_seminfo *target_seminfo; 3864 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 3865 return -TARGET_EFAULT; 3866 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 3867 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 3868 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 3869 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 3870 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 3871 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 3872 __put_user(host_seminfo->semume, &target_seminfo->semume); 3873 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 3874 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 3875 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 3876 unlock_user_struct(target_seminfo, target_addr, 1); 3877 return 0; 3878 } 3879 3880 union semun { 3881 int val; 3882 struct semid_ds *buf; 3883 unsigned short *array; 3884 struct seminfo *__buf; 3885 }; 3886 3887 union target_semun { 3888 int val; 3889 abi_ulong buf; 3890 abi_ulong array; 3891 abi_ulong __buf; 3892 }; 3893 3894 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 3895 abi_ulong target_addr) 3896 { 3897 int nsems; 3898 unsigned short *array; 3899 union semun semun; 3900 struct semid_ds semid_ds; 3901 int i, ret; 3902 3903 semun.buf = &semid_ds; 3904 3905 ret = semctl(semid, 0, IPC_STAT, semun); 3906 if (ret == -1) 3907 return get_errno(ret); 3908 3909 nsems = semid_ds.sem_nsems; 3910 3911 *host_array = g_try_new(unsigned short, nsems); 3912 if (!*host_array) { 3913 return -TARGET_ENOMEM; 3914 } 3915 array = lock_user(VERIFY_READ, target_addr, 3916 nsems*sizeof(unsigned short), 1); 3917 if (!array) { 3918 g_free(*host_array); 3919 return -TARGET_EFAULT; 3920 } 3921 3922 for(i=0; i<nsems; i++) { 3923 __get_user((*host_array)[i], &array[i]); 3924 } 3925 unlock_user(array, target_addr, 0); 3926 3927 return 0; 3928 } 3929 3930 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 3931 unsigned short **host_array) 3932 { 3933 int nsems; 3934 unsigned short *array; 3935 union semun semun; 3936 struct semid_ds semid_ds; 3937 int i, ret; 3938 3939 semun.buf = &semid_ds; 3940 3941 ret = semctl(semid, 0, IPC_STAT, semun); 3942 if (ret == -1) 3943 return get_errno(ret); 3944 3945 nsems = semid_ds.sem_nsems; 3946 3947 array = lock_user(VERIFY_WRITE, target_addr, 3948 nsems*sizeof(unsigned short), 0); 3949 if (!array) 3950 return -TARGET_EFAULT; 3951 3952 for(i=0; i<nsems; i++) { 3953 __put_user((*host_array)[i], &array[i]); 3954 } 3955 g_free(*host_array); 3956 unlock_user(array, target_addr, 1); 3957 3958 return 0; 3959 } 3960 3961 static inline abi_long do_semctl(int semid, int semnum, int cmd, 3962 abi_ulong target_arg) 3963 { 3964 union target_semun target_su = { .buf = target_arg }; 3965 union semun arg; 3966 struct semid_ds dsarg; 3967 unsigned short *array = NULL; 3968 struct seminfo seminfo; 3969 abi_long ret = -TARGET_EINVAL; 3970 abi_long err; 3971 cmd &= 0xff; 3972 3973 switch( cmd ) { 3974 case GETVAL: 3975 case SETVAL: 3976 /* In 64 bit cross-endian situations, we will erroneously pick up 3977 * the wrong half of the union for the "val" element. To rectify 3978 * this, the entire 8-byte structure is byteswapped, followed by 3979 * a swap of the 4 byte val field. In other cases, the data is 3980 * already in proper host byte order. */ 3981 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 3982 target_su.buf = tswapal(target_su.buf); 3983 arg.val = tswap32(target_su.val); 3984 } else { 3985 arg.val = target_su.val; 3986 } 3987 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3988 break; 3989 case GETALL: 3990 case SETALL: 3991 err = target_to_host_semarray(semid, &array, target_su.array); 3992 if (err) 3993 return err; 3994 arg.array = array; 3995 ret = get_errno(semctl(semid, semnum, cmd, arg)); 3996 err = host_to_target_semarray(semid, target_su.array, &array); 3997 if (err) 3998 return err; 3999 break; 4000 case IPC_STAT: 4001 case IPC_SET: 4002 case SEM_STAT: 4003 err = target_to_host_semid_ds(&dsarg, target_su.buf); 4004 if (err) 4005 return err; 4006 arg.buf = &dsarg; 4007 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4008 err = host_to_target_semid_ds(target_su.buf, &dsarg); 4009 if (err) 4010 return err; 4011 break; 4012 case IPC_INFO: 4013 case SEM_INFO: 4014 arg.__buf = &seminfo; 4015 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4016 err = host_to_target_seminfo(target_su.__buf, &seminfo); 4017 if (err) 4018 return err; 4019 break; 4020 case IPC_RMID: 4021 case GETPID: 4022 case GETNCNT: 4023 case GETZCNT: 4024 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 4025 break; 4026 } 4027 4028 return ret; 4029 } 4030 4031 struct target_sembuf { 4032 unsigned short sem_num; 4033 short sem_op; 4034 short sem_flg; 4035 }; 4036 4037 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 4038 abi_ulong target_addr, 4039 unsigned nsops) 4040 { 4041 struct target_sembuf *target_sembuf; 4042 int i; 4043 4044 target_sembuf = lock_user(VERIFY_READ, target_addr, 4045 nsops*sizeof(struct target_sembuf), 1); 4046 if (!target_sembuf) 4047 return -TARGET_EFAULT; 4048 4049 for(i=0; i<nsops; i++) { 4050 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 4051 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 4052 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 4053 } 4054 4055 unlock_user(target_sembuf, target_addr, 0); 4056 4057 return 0; 4058 } 4059 4060 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \ 4061 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64) 4062 4063 /* 4064 * This macro is required to handle the s390 variants, which passes the 4065 * arguments in a different order than default. 4066 */ 4067 #ifdef __s390x__ 4068 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4069 (__nsops), (__timeout), (__sops) 4070 #else 4071 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \ 4072 (__nsops), 0, (__sops), (__timeout) 4073 #endif 4074 4075 static inline abi_long do_semtimedop(int semid, 4076 abi_long ptr, 4077 unsigned nsops, 4078 abi_long timeout, bool time64) 4079 { 4080 struct sembuf *sops; 4081 struct timespec ts, *pts = NULL; 4082 abi_long ret; 4083 4084 if (timeout) { 4085 pts = &ts; 4086 if (time64) { 4087 if (target_to_host_timespec64(pts, timeout)) { 4088 return -TARGET_EFAULT; 4089 } 4090 } else { 4091 if (target_to_host_timespec(pts, timeout)) { 4092 return -TARGET_EFAULT; 4093 } 4094 } 4095 } 4096 4097 if (nsops > TARGET_SEMOPM) { 4098 return -TARGET_E2BIG; 4099 } 4100 4101 sops = g_new(struct sembuf, nsops); 4102 4103 if (target_to_host_sembuf(sops, ptr, nsops)) { 4104 g_free(sops); 4105 return -TARGET_EFAULT; 4106 } 4107 4108 ret = -TARGET_ENOSYS; 4109 #ifdef __NR_semtimedop 4110 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts)); 4111 #endif 4112 #ifdef __NR_ipc 4113 if (ret == -TARGET_ENOSYS) { 4114 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, 4115 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts))); 4116 } 4117 #endif 4118 g_free(sops); 4119 return ret; 4120 } 4121 #endif 4122 4123 struct target_msqid_ds 4124 { 4125 struct target_ipc_perm msg_perm; 4126 abi_ulong msg_stime; 4127 #if TARGET_ABI_BITS == 32 4128 abi_ulong __unused1; 4129 #endif 4130 abi_ulong msg_rtime; 4131 #if TARGET_ABI_BITS == 32 4132 abi_ulong __unused2; 4133 #endif 4134 abi_ulong msg_ctime; 4135 #if TARGET_ABI_BITS == 32 4136 abi_ulong __unused3; 4137 #endif 4138 abi_ulong __msg_cbytes; 4139 abi_ulong msg_qnum; 4140 abi_ulong msg_qbytes; 4141 abi_ulong msg_lspid; 4142 abi_ulong msg_lrpid; 4143 abi_ulong __unused4; 4144 abi_ulong __unused5; 4145 }; 4146 4147 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 4148 abi_ulong target_addr) 4149 { 4150 struct target_msqid_ds *target_md; 4151 4152 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 4153 return -TARGET_EFAULT; 4154 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 4155 return -TARGET_EFAULT; 4156 host_md->msg_stime = tswapal(target_md->msg_stime); 4157 host_md->msg_rtime = tswapal(target_md->msg_rtime); 4158 host_md->msg_ctime = tswapal(target_md->msg_ctime); 4159 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 4160 host_md->msg_qnum = tswapal(target_md->msg_qnum); 4161 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 4162 host_md->msg_lspid = tswapal(target_md->msg_lspid); 4163 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 4164 unlock_user_struct(target_md, target_addr, 0); 4165 return 0; 4166 } 4167 4168 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 4169 struct msqid_ds *host_md) 4170 { 4171 struct target_msqid_ds *target_md; 4172 4173 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 4174 return -TARGET_EFAULT; 4175 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 4176 return -TARGET_EFAULT; 4177 target_md->msg_stime = tswapal(host_md->msg_stime); 4178 target_md->msg_rtime = tswapal(host_md->msg_rtime); 4179 target_md->msg_ctime = tswapal(host_md->msg_ctime); 4180 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 4181 target_md->msg_qnum = tswapal(host_md->msg_qnum); 4182 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 4183 target_md->msg_lspid = tswapal(host_md->msg_lspid); 4184 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 4185 unlock_user_struct(target_md, target_addr, 1); 4186 return 0; 4187 } 4188 4189 struct target_msginfo { 4190 int msgpool; 4191 int msgmap; 4192 int msgmax; 4193 int msgmnb; 4194 int msgmni; 4195 int msgssz; 4196 int msgtql; 4197 unsigned short int msgseg; 4198 }; 4199 4200 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 4201 struct msginfo *host_msginfo) 4202 { 4203 struct target_msginfo *target_msginfo; 4204 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 4205 return -TARGET_EFAULT; 4206 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 4207 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 4208 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 4209 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 4210 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 4211 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 4212 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 4213 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 4214 unlock_user_struct(target_msginfo, target_addr, 1); 4215 return 0; 4216 } 4217 4218 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 4219 { 4220 struct msqid_ds dsarg; 4221 struct msginfo msginfo; 4222 abi_long ret = -TARGET_EINVAL; 4223 4224 cmd &= 0xff; 4225 4226 switch (cmd) { 4227 case IPC_STAT: 4228 case IPC_SET: 4229 case MSG_STAT: 4230 if (target_to_host_msqid_ds(&dsarg,ptr)) 4231 return -TARGET_EFAULT; 4232 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4233 if (host_to_target_msqid_ds(ptr,&dsarg)) 4234 return -TARGET_EFAULT; 4235 break; 4236 case IPC_RMID: 4237 ret = get_errno(msgctl(msgid, cmd, NULL)); 4238 break; 4239 case IPC_INFO: 4240 case MSG_INFO: 4241 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4242 if (host_to_target_msginfo(ptr, &msginfo)) 4243 return -TARGET_EFAULT; 4244 break; 4245 } 4246 4247 return ret; 4248 } 4249 4250 struct target_msgbuf { 4251 abi_long mtype; 4252 char mtext[1]; 4253 }; 4254 4255 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4256 ssize_t msgsz, int msgflg) 4257 { 4258 struct target_msgbuf *target_mb; 4259 struct msgbuf *host_mb; 4260 abi_long ret = 0; 4261 4262 if (msgsz < 0) { 4263 return -TARGET_EINVAL; 4264 } 4265 4266 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4267 return -TARGET_EFAULT; 4268 host_mb = g_try_malloc(msgsz + sizeof(long)); 4269 if (!host_mb) { 4270 unlock_user_struct(target_mb, msgp, 0); 4271 return -TARGET_ENOMEM; 4272 } 4273 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4274 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4275 ret = -TARGET_ENOSYS; 4276 #ifdef __NR_msgsnd 4277 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4278 #endif 4279 #ifdef __NR_ipc 4280 if (ret == -TARGET_ENOSYS) { 4281 #ifdef __s390x__ 4282 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4283 host_mb)); 4284 #else 4285 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, 4286 host_mb, 0)); 4287 #endif 4288 } 4289 #endif 4290 g_free(host_mb); 4291 unlock_user_struct(target_mb, msgp, 0); 4292 4293 return ret; 4294 } 4295 4296 #ifdef __NR_ipc 4297 #if defined(__sparc__) 4298 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */ 4299 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp 4300 #elif defined(__s390x__) 4301 /* The s390 sys_ipc variant has only five parameters. */ 4302 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4303 ((long int[]){(long int)__msgp, __msgtyp}) 4304 #else 4305 #define MSGRCV_ARGS(__msgp, __msgtyp) \ 4306 ((long int[]){(long int)__msgp, __msgtyp}), 0 4307 #endif 4308 #endif 4309 4310 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4311 ssize_t msgsz, abi_long msgtyp, 4312 int msgflg) 4313 { 4314 struct target_msgbuf *target_mb; 4315 char *target_mtext; 4316 struct msgbuf *host_mb; 4317 abi_long ret = 0; 4318 4319 if (msgsz < 0) { 4320 return -TARGET_EINVAL; 4321 } 4322 4323 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4324 return -TARGET_EFAULT; 4325 4326 host_mb = g_try_malloc(msgsz + sizeof(long)); 4327 if (!host_mb) { 4328 ret = -TARGET_ENOMEM; 4329 goto end; 4330 } 4331 ret = -TARGET_ENOSYS; 4332 #ifdef __NR_msgrcv 4333 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4334 #endif 4335 #ifdef __NR_ipc 4336 if (ret == -TARGET_ENOSYS) { 4337 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz, 4338 msgflg, MSGRCV_ARGS(host_mb, msgtyp))); 4339 } 4340 #endif 4341 4342 if (ret > 0) { 4343 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4344 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4345 if (!target_mtext) { 4346 ret = -TARGET_EFAULT; 4347 goto end; 4348 } 4349 memcpy(target_mb->mtext, host_mb->mtext, ret); 4350 unlock_user(target_mtext, target_mtext_addr, ret); 4351 } 4352 4353 target_mb->mtype = tswapal(host_mb->mtype); 4354 4355 end: 4356 if (target_mb) 4357 unlock_user_struct(target_mb, msgp, 1); 4358 g_free(host_mb); 4359 return ret; 4360 } 4361 4362 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4363 abi_ulong target_addr) 4364 { 4365 struct target_shmid_ds *target_sd; 4366 4367 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4368 return -TARGET_EFAULT; 4369 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4370 return -TARGET_EFAULT; 4371 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4372 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4373 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4374 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4375 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4376 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4377 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4378 unlock_user_struct(target_sd, target_addr, 0); 4379 return 0; 4380 } 4381 4382 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4383 struct shmid_ds *host_sd) 4384 { 4385 struct target_shmid_ds *target_sd; 4386 4387 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4388 return -TARGET_EFAULT; 4389 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4390 return -TARGET_EFAULT; 4391 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4392 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4393 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4394 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4395 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4396 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4397 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4398 unlock_user_struct(target_sd, target_addr, 1); 4399 return 0; 4400 } 4401 4402 struct target_shminfo { 4403 abi_ulong shmmax; 4404 abi_ulong shmmin; 4405 abi_ulong shmmni; 4406 abi_ulong shmseg; 4407 abi_ulong shmall; 4408 }; 4409 4410 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4411 struct shminfo *host_shminfo) 4412 { 4413 struct target_shminfo *target_shminfo; 4414 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4415 return -TARGET_EFAULT; 4416 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4417 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4418 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4419 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4420 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4421 unlock_user_struct(target_shminfo, target_addr, 1); 4422 return 0; 4423 } 4424 4425 struct target_shm_info { 4426 int used_ids; 4427 abi_ulong shm_tot; 4428 abi_ulong shm_rss; 4429 abi_ulong shm_swp; 4430 abi_ulong swap_attempts; 4431 abi_ulong swap_successes; 4432 }; 4433 4434 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4435 struct shm_info *host_shm_info) 4436 { 4437 struct target_shm_info *target_shm_info; 4438 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4439 return -TARGET_EFAULT; 4440 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4441 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4442 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4443 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4444 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4445 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4446 unlock_user_struct(target_shm_info, target_addr, 1); 4447 return 0; 4448 } 4449 4450 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4451 { 4452 struct shmid_ds dsarg; 4453 struct shminfo shminfo; 4454 struct shm_info shm_info; 4455 abi_long ret = -TARGET_EINVAL; 4456 4457 cmd &= 0xff; 4458 4459 switch(cmd) { 4460 case IPC_STAT: 4461 case IPC_SET: 4462 case SHM_STAT: 4463 if (target_to_host_shmid_ds(&dsarg, buf)) 4464 return -TARGET_EFAULT; 4465 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4466 if (host_to_target_shmid_ds(buf, &dsarg)) 4467 return -TARGET_EFAULT; 4468 break; 4469 case IPC_INFO: 4470 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4471 if (host_to_target_shminfo(buf, &shminfo)) 4472 return -TARGET_EFAULT; 4473 break; 4474 case SHM_INFO: 4475 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4476 if (host_to_target_shm_info(buf, &shm_info)) 4477 return -TARGET_EFAULT; 4478 break; 4479 case IPC_RMID: 4480 case SHM_LOCK: 4481 case SHM_UNLOCK: 4482 ret = get_errno(shmctl(shmid, cmd, NULL)); 4483 break; 4484 } 4485 4486 return ret; 4487 } 4488 4489 #ifndef TARGET_FORCE_SHMLBA 4490 /* For most architectures, SHMLBA is the same as the page size; 4491 * some architectures have larger values, in which case they should 4492 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4493 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4494 * and defining its own value for SHMLBA. 4495 * 4496 * The kernel also permits SHMLBA to be set by the architecture to a 4497 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4498 * this means that addresses are rounded to the large size if 4499 * SHM_RND is set but addresses not aligned to that size are not rejected 4500 * as long as they are at least page-aligned. Since the only architecture 4501 * which uses this is ia64 this code doesn't provide for that oddity. 4502 */ 4503 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4504 { 4505 return TARGET_PAGE_SIZE; 4506 } 4507 #endif 4508 4509 static inline abi_ulong do_shmat(CPUArchState *cpu_env, 4510 int shmid, abi_ulong shmaddr, int shmflg) 4511 { 4512 CPUState *cpu = env_cpu(cpu_env); 4513 abi_long raddr; 4514 void *host_raddr; 4515 struct shmid_ds shm_info; 4516 int i,ret; 4517 abi_ulong shmlba; 4518 4519 /* shmat pointers are always untagged */ 4520 4521 /* find out the length of the shared memory segment */ 4522 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4523 if (is_error(ret)) { 4524 /* can't get length, bail out */ 4525 return ret; 4526 } 4527 4528 shmlba = target_shmlba(cpu_env); 4529 4530 if (shmaddr & (shmlba - 1)) { 4531 if (shmflg & SHM_RND) { 4532 shmaddr &= ~(shmlba - 1); 4533 } else { 4534 return -TARGET_EINVAL; 4535 } 4536 } 4537 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { 4538 return -TARGET_EINVAL; 4539 } 4540 4541 mmap_lock(); 4542 4543 /* 4544 * We're mapping shared memory, so ensure we generate code for parallel 4545 * execution and flush old translations. This will work up to the level 4546 * supported by the host -- anything that requires EXCP_ATOMIC will not 4547 * be atomic with respect to an external process. 4548 */ 4549 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 4550 cpu->tcg_cflags |= CF_PARALLEL; 4551 tb_flush(cpu); 4552 } 4553 4554 if (shmaddr) 4555 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); 4556 else { 4557 abi_ulong mmap_start; 4558 4559 /* In order to use the host shmat, we need to honor host SHMLBA. */ 4560 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba)); 4561 4562 if (mmap_start == -1) { 4563 errno = ENOMEM; 4564 host_raddr = (void *)-1; 4565 } else 4566 host_raddr = shmat(shmid, g2h_untagged(mmap_start), 4567 shmflg | SHM_REMAP); 4568 } 4569 4570 if (host_raddr == (void *)-1) { 4571 mmap_unlock(); 4572 return get_errno((long)host_raddr); 4573 } 4574 raddr=h2g((unsigned long)host_raddr); 4575 4576 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4577 PAGE_VALID | PAGE_RESET | PAGE_READ | 4578 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); 4579 4580 for (i = 0; i < N_SHM_REGIONS; i++) { 4581 if (!shm_regions[i].in_use) { 4582 shm_regions[i].in_use = true; 4583 shm_regions[i].start = raddr; 4584 shm_regions[i].size = shm_info.shm_segsz; 4585 break; 4586 } 4587 } 4588 4589 mmap_unlock(); 4590 return raddr; 4591 4592 } 4593 4594 static inline abi_long do_shmdt(abi_ulong shmaddr) 4595 { 4596 int i; 4597 abi_long rv; 4598 4599 /* shmdt pointers are always untagged */ 4600 4601 mmap_lock(); 4602 4603 for (i = 0; i < N_SHM_REGIONS; ++i) { 4604 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4605 shm_regions[i].in_use = false; 4606 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4607 break; 4608 } 4609 } 4610 rv = get_errno(shmdt(g2h_untagged(shmaddr))); 4611 4612 mmap_unlock(); 4613 4614 return rv; 4615 } 4616 4617 #ifdef TARGET_NR_ipc 4618 /* ??? This only works with linear mappings. */ 4619 /* do_ipc() must return target values and target errnos. */ 4620 static abi_long do_ipc(CPUArchState *cpu_env, 4621 unsigned int call, abi_long first, 4622 abi_long second, abi_long third, 4623 abi_long ptr, abi_long fifth) 4624 { 4625 int version; 4626 abi_long ret = 0; 4627 4628 version = call >> 16; 4629 call &= 0xffff; 4630 4631 switch (call) { 4632 case IPCOP_semop: 4633 ret = do_semtimedop(first, ptr, second, 0, false); 4634 break; 4635 case IPCOP_semtimedop: 4636 /* 4637 * The s390 sys_ipc variant has only five parameters instead of six 4638 * (as for default variant) and the only difference is the handling of 4639 * SEMTIMEDOP where on s390 the third parameter is used as a pointer 4640 * to a struct timespec where the generic variant uses fifth parameter. 4641 */ 4642 #if defined(TARGET_S390X) 4643 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64); 4644 #else 4645 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64); 4646 #endif 4647 break; 4648 4649 case IPCOP_semget: 4650 ret = get_errno(semget(first, second, third)); 4651 break; 4652 4653 case IPCOP_semctl: { 4654 /* The semun argument to semctl is passed by value, so dereference the 4655 * ptr argument. */ 4656 abi_ulong atptr; 4657 get_user_ual(atptr, ptr); 4658 ret = do_semctl(first, second, third, atptr); 4659 break; 4660 } 4661 4662 case IPCOP_msgget: 4663 ret = get_errno(msgget(first, second)); 4664 break; 4665 4666 case IPCOP_msgsnd: 4667 ret = do_msgsnd(first, ptr, second, third); 4668 break; 4669 4670 case IPCOP_msgctl: 4671 ret = do_msgctl(first, second, ptr); 4672 break; 4673 4674 case IPCOP_msgrcv: 4675 switch (version) { 4676 case 0: 4677 { 4678 struct target_ipc_kludge { 4679 abi_long msgp; 4680 abi_long msgtyp; 4681 } *tmp; 4682 4683 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4684 ret = -TARGET_EFAULT; 4685 break; 4686 } 4687 4688 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4689 4690 unlock_user_struct(tmp, ptr, 0); 4691 break; 4692 } 4693 default: 4694 ret = do_msgrcv(first, ptr, second, fifth, third); 4695 } 4696 break; 4697 4698 case IPCOP_shmat: 4699 switch (version) { 4700 default: 4701 { 4702 abi_ulong raddr; 4703 raddr = do_shmat(cpu_env, first, ptr, second); 4704 if (is_error(raddr)) 4705 return get_errno(raddr); 4706 if (put_user_ual(raddr, third)) 4707 return -TARGET_EFAULT; 4708 break; 4709 } 4710 case 1: 4711 ret = -TARGET_EINVAL; 4712 break; 4713 } 4714 break; 4715 case IPCOP_shmdt: 4716 ret = do_shmdt(ptr); 4717 break; 4718 4719 case IPCOP_shmget: 4720 /* IPC_* flag values are the same on all linux platforms */ 4721 ret = get_errno(shmget(first, second, third)); 4722 break; 4723 4724 /* IPC_* and SHM_* command values are the same on all linux platforms */ 4725 case IPCOP_shmctl: 4726 ret = do_shmctl(first, second, ptr); 4727 break; 4728 default: 4729 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n", 4730 call, version); 4731 ret = -TARGET_ENOSYS; 4732 break; 4733 } 4734 return ret; 4735 } 4736 #endif 4737 4738 /* kernel structure types definitions */ 4739 4740 #define STRUCT(name, ...) STRUCT_ ## name, 4741 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 4742 enum { 4743 #include "syscall_types.h" 4744 STRUCT_MAX 4745 }; 4746 #undef STRUCT 4747 #undef STRUCT_SPECIAL 4748 4749 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 4750 #define STRUCT_SPECIAL(name) 4751 #include "syscall_types.h" 4752 #undef STRUCT 4753 #undef STRUCT_SPECIAL 4754 4755 #define MAX_STRUCT_SIZE 4096 4756 4757 #ifdef CONFIG_FIEMAP 4758 /* So fiemap access checks don't overflow on 32 bit systems. 4759 * This is very slightly smaller than the limit imposed by 4760 * the underlying kernel. 4761 */ 4762 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 4763 / sizeof(struct fiemap_extent)) 4764 4765 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 4766 int fd, int cmd, abi_long arg) 4767 { 4768 /* The parameter for this ioctl is a struct fiemap followed 4769 * by an array of struct fiemap_extent whose size is set 4770 * in fiemap->fm_extent_count. The array is filled in by the 4771 * ioctl. 4772 */ 4773 int target_size_in, target_size_out; 4774 struct fiemap *fm; 4775 const argtype *arg_type = ie->arg_type; 4776 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 4777 void *argptr, *p; 4778 abi_long ret; 4779 int i, extent_size = thunk_type_size(extent_arg_type, 0); 4780 uint32_t outbufsz; 4781 int free_fm = 0; 4782 4783 assert(arg_type[0] == TYPE_PTR); 4784 assert(ie->access == IOC_RW); 4785 arg_type++; 4786 target_size_in = thunk_type_size(arg_type, 0); 4787 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 4788 if (!argptr) { 4789 return -TARGET_EFAULT; 4790 } 4791 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4792 unlock_user(argptr, arg, 0); 4793 fm = (struct fiemap *)buf_temp; 4794 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 4795 return -TARGET_EINVAL; 4796 } 4797 4798 outbufsz = sizeof (*fm) + 4799 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 4800 4801 if (outbufsz > MAX_STRUCT_SIZE) { 4802 /* We can't fit all the extents into the fixed size buffer. 4803 * Allocate one that is large enough and use it instead. 4804 */ 4805 fm = g_try_malloc(outbufsz); 4806 if (!fm) { 4807 return -TARGET_ENOMEM; 4808 } 4809 memcpy(fm, buf_temp, sizeof(struct fiemap)); 4810 free_fm = 1; 4811 } 4812 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 4813 if (!is_error(ret)) { 4814 target_size_out = target_size_in; 4815 /* An extent_count of 0 means we were only counting the extents 4816 * so there are no structs to copy 4817 */ 4818 if (fm->fm_extent_count != 0) { 4819 target_size_out += fm->fm_mapped_extents * extent_size; 4820 } 4821 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 4822 if (!argptr) { 4823 ret = -TARGET_EFAULT; 4824 } else { 4825 /* Convert the struct fiemap */ 4826 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 4827 if (fm->fm_extent_count != 0) { 4828 p = argptr + target_size_in; 4829 /* ...and then all the struct fiemap_extents */ 4830 for (i = 0; i < fm->fm_mapped_extents; i++) { 4831 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 4832 THUNK_TARGET); 4833 p += extent_size; 4834 } 4835 } 4836 unlock_user(argptr, arg, target_size_out); 4837 } 4838 } 4839 if (free_fm) { 4840 g_free(fm); 4841 } 4842 return ret; 4843 } 4844 #endif 4845 4846 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 4847 int fd, int cmd, abi_long arg) 4848 { 4849 const argtype *arg_type = ie->arg_type; 4850 int target_size; 4851 void *argptr; 4852 int ret; 4853 struct ifconf *host_ifconf; 4854 uint32_t outbufsz; 4855 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 4856 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) }; 4857 int target_ifreq_size; 4858 int nb_ifreq; 4859 int free_buf = 0; 4860 int i; 4861 int target_ifc_len; 4862 abi_long target_ifc_buf; 4863 int host_ifc_len; 4864 char *host_ifc_buf; 4865 4866 assert(arg_type[0] == TYPE_PTR); 4867 assert(ie->access == IOC_RW); 4868 4869 arg_type++; 4870 target_size = thunk_type_size(arg_type, 0); 4871 4872 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 4873 if (!argptr) 4874 return -TARGET_EFAULT; 4875 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 4876 unlock_user(argptr, arg, 0); 4877 4878 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 4879 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 4880 target_ifreq_size = thunk_type_size(ifreq_max_type, 0); 4881 4882 if (target_ifc_buf != 0) { 4883 target_ifc_len = host_ifconf->ifc_len; 4884 nb_ifreq = target_ifc_len / target_ifreq_size; 4885 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 4886 4887 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 4888 if (outbufsz > MAX_STRUCT_SIZE) { 4889 /* 4890 * We can't fit all the extents into the fixed size buffer. 4891 * Allocate one that is large enough and use it instead. 4892 */ 4893 host_ifconf = g_try_malloc(outbufsz); 4894 if (!host_ifconf) { 4895 return -TARGET_ENOMEM; 4896 } 4897 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 4898 free_buf = 1; 4899 } 4900 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf); 4901 4902 host_ifconf->ifc_len = host_ifc_len; 4903 } else { 4904 host_ifc_buf = NULL; 4905 } 4906 host_ifconf->ifc_buf = host_ifc_buf; 4907 4908 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 4909 if (!is_error(ret)) { 4910 /* convert host ifc_len to target ifc_len */ 4911 4912 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 4913 target_ifc_len = nb_ifreq * target_ifreq_size; 4914 host_ifconf->ifc_len = target_ifc_len; 4915 4916 /* restore target ifc_buf */ 4917 4918 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 4919 4920 /* copy struct ifconf to target user */ 4921 4922 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 4923 if (!argptr) 4924 return -TARGET_EFAULT; 4925 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 4926 unlock_user(argptr, arg, target_size); 4927 4928 if (target_ifc_buf != 0) { 4929 /* copy ifreq[] to target user */ 4930 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 4931 for (i = 0; i < nb_ifreq ; i++) { 4932 thunk_convert(argptr + i * target_ifreq_size, 4933 host_ifc_buf + i * sizeof(struct ifreq), 4934 ifreq_arg_type, THUNK_TARGET); 4935 } 4936 unlock_user(argptr, target_ifc_buf, target_ifc_len); 4937 } 4938 } 4939 4940 if (free_buf) { 4941 g_free(host_ifconf); 4942 } 4943 4944 return ret; 4945 } 4946 4947 #if defined(CONFIG_USBFS) 4948 #if HOST_LONG_BITS > 64 4949 #error USBDEVFS thunks do not support >64 bit hosts yet. 4950 #endif 4951 struct live_urb { 4952 uint64_t target_urb_adr; 4953 uint64_t target_buf_adr; 4954 char *target_buf_ptr; 4955 struct usbdevfs_urb host_urb; 4956 }; 4957 4958 static GHashTable *usbdevfs_urb_hashtable(void) 4959 { 4960 static GHashTable *urb_hashtable; 4961 4962 if (!urb_hashtable) { 4963 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal); 4964 } 4965 return urb_hashtable; 4966 } 4967 4968 static void urb_hashtable_insert(struct live_urb *urb) 4969 { 4970 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4971 g_hash_table_insert(urb_hashtable, urb, urb); 4972 } 4973 4974 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr) 4975 { 4976 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4977 return g_hash_table_lookup(urb_hashtable, &target_urb_adr); 4978 } 4979 4980 static void urb_hashtable_remove(struct live_urb *urb) 4981 { 4982 GHashTable *urb_hashtable = usbdevfs_urb_hashtable(); 4983 g_hash_table_remove(urb_hashtable, urb); 4984 } 4985 4986 static abi_long 4987 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp, 4988 int fd, int cmd, abi_long arg) 4989 { 4990 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) }; 4991 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 }; 4992 struct live_urb *lurb; 4993 void *argptr; 4994 uint64_t hurb; 4995 int target_size; 4996 uintptr_t target_urb_adr; 4997 abi_long ret; 4998 4999 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET); 5000 5001 memset(buf_temp, 0, sizeof(uint64_t)); 5002 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5003 if (is_error(ret)) { 5004 return ret; 5005 } 5006 5007 memcpy(&hurb, buf_temp, sizeof(uint64_t)); 5008 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb)); 5009 if (!lurb->target_urb_adr) { 5010 return -TARGET_EFAULT; 5011 } 5012 urb_hashtable_remove(lurb); 5013 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 5014 lurb->host_urb.buffer_length); 5015 lurb->target_buf_ptr = NULL; 5016 5017 /* restore the guest buffer pointer */ 5018 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr; 5019 5020 /* update the guest urb struct */ 5021 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0); 5022 if (!argptr) { 5023 g_free(lurb); 5024 return -TARGET_EFAULT; 5025 } 5026 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET); 5027 unlock_user(argptr, lurb->target_urb_adr, target_size); 5028 5029 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET); 5030 /* write back the urb handle */ 5031 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5032 if (!argptr) { 5033 g_free(lurb); 5034 return -TARGET_EFAULT; 5035 } 5036 5037 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */ 5038 target_urb_adr = lurb->target_urb_adr; 5039 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET); 5040 unlock_user(argptr, arg, target_size); 5041 5042 g_free(lurb); 5043 return ret; 5044 } 5045 5046 static abi_long 5047 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie, 5048 uint8_t *buf_temp __attribute__((unused)), 5049 int fd, int cmd, abi_long arg) 5050 { 5051 struct live_urb *lurb; 5052 5053 /* map target address back to host URB with metadata. */ 5054 lurb = urb_hashtable_lookup(arg); 5055 if (!lurb) { 5056 return -TARGET_EFAULT; 5057 } 5058 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5059 } 5060 5061 static abi_long 5062 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp, 5063 int fd, int cmd, abi_long arg) 5064 { 5065 const argtype *arg_type = ie->arg_type; 5066 int target_size; 5067 abi_long ret; 5068 void *argptr; 5069 int rw_dir; 5070 struct live_urb *lurb; 5071 5072 /* 5073 * each submitted URB needs to map to a unique ID for the 5074 * kernel, and that unique ID needs to be a pointer to 5075 * host memory. hence, we need to malloc for each URB. 5076 * isochronous transfers have a variable length struct. 5077 */ 5078 arg_type++; 5079 target_size = thunk_type_size(arg_type, THUNK_TARGET); 5080 5081 /* construct host copy of urb and metadata */ 5082 lurb = g_try_new0(struct live_urb, 1); 5083 if (!lurb) { 5084 return -TARGET_ENOMEM; 5085 } 5086 5087 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5088 if (!argptr) { 5089 g_free(lurb); 5090 return -TARGET_EFAULT; 5091 } 5092 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST); 5093 unlock_user(argptr, arg, 0); 5094 5095 lurb->target_urb_adr = arg; 5096 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer; 5097 5098 /* buffer space used depends on endpoint type so lock the entire buffer */ 5099 /* control type urbs should check the buffer contents for true direction */ 5100 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ; 5101 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr, 5102 lurb->host_urb.buffer_length, 1); 5103 if (lurb->target_buf_ptr == NULL) { 5104 g_free(lurb); 5105 return -TARGET_EFAULT; 5106 } 5107 5108 /* update buffer pointer in host copy */ 5109 lurb->host_urb.buffer = lurb->target_buf_ptr; 5110 5111 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb)); 5112 if (is_error(ret)) { 5113 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0); 5114 g_free(lurb); 5115 } else { 5116 urb_hashtable_insert(lurb); 5117 } 5118 5119 return ret; 5120 } 5121 #endif /* CONFIG_USBFS */ 5122 5123 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5124 int cmd, abi_long arg) 5125 { 5126 void *argptr; 5127 struct dm_ioctl *host_dm; 5128 abi_long guest_data; 5129 uint32_t guest_data_size; 5130 int target_size; 5131 const argtype *arg_type = ie->arg_type; 5132 abi_long ret; 5133 void *big_buf = NULL; 5134 char *host_data; 5135 5136 arg_type++; 5137 target_size = thunk_type_size(arg_type, 0); 5138 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5139 if (!argptr) { 5140 ret = -TARGET_EFAULT; 5141 goto out; 5142 } 5143 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5144 unlock_user(argptr, arg, 0); 5145 5146 /* buf_temp is too small, so fetch things into a bigger buffer */ 5147 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5148 memcpy(big_buf, buf_temp, target_size); 5149 buf_temp = big_buf; 5150 host_dm = big_buf; 5151 5152 guest_data = arg + host_dm->data_start; 5153 if ((guest_data - arg) < 0) { 5154 ret = -TARGET_EINVAL; 5155 goto out; 5156 } 5157 guest_data_size = host_dm->data_size - host_dm->data_start; 5158 host_data = (char*)host_dm + host_dm->data_start; 5159 5160 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5161 if (!argptr) { 5162 ret = -TARGET_EFAULT; 5163 goto out; 5164 } 5165 5166 switch (ie->host_cmd) { 5167 case DM_REMOVE_ALL: 5168 case DM_LIST_DEVICES: 5169 case DM_DEV_CREATE: 5170 case DM_DEV_REMOVE: 5171 case DM_DEV_SUSPEND: 5172 case DM_DEV_STATUS: 5173 case DM_DEV_WAIT: 5174 case DM_TABLE_STATUS: 5175 case DM_TABLE_CLEAR: 5176 case DM_TABLE_DEPS: 5177 case DM_LIST_VERSIONS: 5178 /* no input data */ 5179 break; 5180 case DM_DEV_RENAME: 5181 case DM_DEV_SET_GEOMETRY: 5182 /* data contains only strings */ 5183 memcpy(host_data, argptr, guest_data_size); 5184 break; 5185 case DM_TARGET_MSG: 5186 memcpy(host_data, argptr, guest_data_size); 5187 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5188 break; 5189 case DM_TABLE_LOAD: 5190 { 5191 void *gspec = argptr; 5192 void *cur_data = host_data; 5193 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5194 int spec_size = thunk_type_size(arg_type, 0); 5195 int i; 5196 5197 for (i = 0; i < host_dm->target_count; i++) { 5198 struct dm_target_spec *spec = cur_data; 5199 uint32_t next; 5200 int slen; 5201 5202 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5203 slen = strlen((char*)gspec + spec_size) + 1; 5204 next = spec->next; 5205 spec->next = sizeof(*spec) + slen; 5206 strcpy((char*)&spec[1], gspec + spec_size); 5207 gspec += next; 5208 cur_data += spec->next; 5209 } 5210 break; 5211 } 5212 default: 5213 ret = -TARGET_EINVAL; 5214 unlock_user(argptr, guest_data, 0); 5215 goto out; 5216 } 5217 unlock_user(argptr, guest_data, 0); 5218 5219 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5220 if (!is_error(ret)) { 5221 guest_data = arg + host_dm->data_start; 5222 guest_data_size = host_dm->data_size - host_dm->data_start; 5223 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5224 switch (ie->host_cmd) { 5225 case DM_REMOVE_ALL: 5226 case DM_DEV_CREATE: 5227 case DM_DEV_REMOVE: 5228 case DM_DEV_RENAME: 5229 case DM_DEV_SUSPEND: 5230 case DM_DEV_STATUS: 5231 case DM_TABLE_LOAD: 5232 case DM_TABLE_CLEAR: 5233 case DM_TARGET_MSG: 5234 case DM_DEV_SET_GEOMETRY: 5235 /* no return data */ 5236 break; 5237 case DM_LIST_DEVICES: 5238 { 5239 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5240 uint32_t remaining_data = guest_data_size; 5241 void *cur_data = argptr; 5242 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5243 int nl_size = 12; /* can't use thunk_size due to alignment */ 5244 5245 while (1) { 5246 uint32_t next = nl->next; 5247 if (next) { 5248 nl->next = nl_size + (strlen(nl->name) + 1); 5249 } 5250 if (remaining_data < nl->next) { 5251 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5252 break; 5253 } 5254 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5255 strcpy(cur_data + nl_size, nl->name); 5256 cur_data += nl->next; 5257 remaining_data -= nl->next; 5258 if (!next) { 5259 break; 5260 } 5261 nl = (void*)nl + next; 5262 } 5263 break; 5264 } 5265 case DM_DEV_WAIT: 5266 case DM_TABLE_STATUS: 5267 { 5268 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5269 void *cur_data = argptr; 5270 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5271 int spec_size = thunk_type_size(arg_type, 0); 5272 int i; 5273 5274 for (i = 0; i < host_dm->target_count; i++) { 5275 uint32_t next = spec->next; 5276 int slen = strlen((char*)&spec[1]) + 1; 5277 spec->next = (cur_data - argptr) + spec_size + slen; 5278 if (guest_data_size < spec->next) { 5279 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5280 break; 5281 } 5282 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5283 strcpy(cur_data + spec_size, (char*)&spec[1]); 5284 cur_data = argptr + spec->next; 5285 spec = (void*)host_dm + host_dm->data_start + next; 5286 } 5287 break; 5288 } 5289 case DM_TABLE_DEPS: 5290 { 5291 void *hdata = (void*)host_dm + host_dm->data_start; 5292 int count = *(uint32_t*)hdata; 5293 uint64_t *hdev = hdata + 8; 5294 uint64_t *gdev = argptr + 8; 5295 int i; 5296 5297 *(uint32_t*)argptr = tswap32(count); 5298 for (i = 0; i < count; i++) { 5299 *gdev = tswap64(*hdev); 5300 gdev++; 5301 hdev++; 5302 } 5303 break; 5304 } 5305 case DM_LIST_VERSIONS: 5306 { 5307 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5308 uint32_t remaining_data = guest_data_size; 5309 void *cur_data = argptr; 5310 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5311 int vers_size = thunk_type_size(arg_type, 0); 5312 5313 while (1) { 5314 uint32_t next = vers->next; 5315 if (next) { 5316 vers->next = vers_size + (strlen(vers->name) + 1); 5317 } 5318 if (remaining_data < vers->next) { 5319 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5320 break; 5321 } 5322 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5323 strcpy(cur_data + vers_size, vers->name); 5324 cur_data += vers->next; 5325 remaining_data -= vers->next; 5326 if (!next) { 5327 break; 5328 } 5329 vers = (void*)vers + next; 5330 } 5331 break; 5332 } 5333 default: 5334 unlock_user(argptr, guest_data, 0); 5335 ret = -TARGET_EINVAL; 5336 goto out; 5337 } 5338 unlock_user(argptr, guest_data, guest_data_size); 5339 5340 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5341 if (!argptr) { 5342 ret = -TARGET_EFAULT; 5343 goto out; 5344 } 5345 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5346 unlock_user(argptr, arg, target_size); 5347 } 5348 out: 5349 g_free(big_buf); 5350 return ret; 5351 } 5352 5353 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5354 int cmd, abi_long arg) 5355 { 5356 void *argptr; 5357 int target_size; 5358 const argtype *arg_type = ie->arg_type; 5359 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5360 abi_long ret; 5361 5362 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5363 struct blkpg_partition host_part; 5364 5365 /* Read and convert blkpg */ 5366 arg_type++; 5367 target_size = thunk_type_size(arg_type, 0); 5368 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5369 if (!argptr) { 5370 ret = -TARGET_EFAULT; 5371 goto out; 5372 } 5373 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5374 unlock_user(argptr, arg, 0); 5375 5376 switch (host_blkpg->op) { 5377 case BLKPG_ADD_PARTITION: 5378 case BLKPG_DEL_PARTITION: 5379 /* payload is struct blkpg_partition */ 5380 break; 5381 default: 5382 /* Unknown opcode */ 5383 ret = -TARGET_EINVAL; 5384 goto out; 5385 } 5386 5387 /* Read and convert blkpg->data */ 5388 arg = (abi_long)(uintptr_t)host_blkpg->data; 5389 target_size = thunk_type_size(part_arg_type, 0); 5390 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5391 if (!argptr) { 5392 ret = -TARGET_EFAULT; 5393 goto out; 5394 } 5395 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5396 unlock_user(argptr, arg, 0); 5397 5398 /* Swizzle the data pointer to our local copy and call! */ 5399 host_blkpg->data = &host_part; 5400 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5401 5402 out: 5403 return ret; 5404 } 5405 5406 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5407 int fd, int cmd, abi_long arg) 5408 { 5409 const argtype *arg_type = ie->arg_type; 5410 const StructEntry *se; 5411 const argtype *field_types; 5412 const int *dst_offsets, *src_offsets; 5413 int target_size; 5414 void *argptr; 5415 abi_ulong *target_rt_dev_ptr = NULL; 5416 unsigned long *host_rt_dev_ptr = NULL; 5417 abi_long ret; 5418 int i; 5419 5420 assert(ie->access == IOC_W); 5421 assert(*arg_type == TYPE_PTR); 5422 arg_type++; 5423 assert(*arg_type == TYPE_STRUCT); 5424 target_size = thunk_type_size(arg_type, 0); 5425 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5426 if (!argptr) { 5427 return -TARGET_EFAULT; 5428 } 5429 arg_type++; 5430 assert(*arg_type == (int)STRUCT_rtentry); 5431 se = struct_entries + *arg_type++; 5432 assert(se->convert[0] == NULL); 5433 /* convert struct here to be able to catch rt_dev string */ 5434 field_types = se->field_types; 5435 dst_offsets = se->field_offsets[THUNK_HOST]; 5436 src_offsets = se->field_offsets[THUNK_TARGET]; 5437 for (i = 0; i < se->nb_fields; i++) { 5438 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5439 assert(*field_types == TYPE_PTRVOID); 5440 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5441 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5442 if (*target_rt_dev_ptr != 0) { 5443 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5444 tswapal(*target_rt_dev_ptr)); 5445 if (!*host_rt_dev_ptr) { 5446 unlock_user(argptr, arg, 0); 5447 return -TARGET_EFAULT; 5448 } 5449 } else { 5450 *host_rt_dev_ptr = 0; 5451 } 5452 field_types++; 5453 continue; 5454 } 5455 field_types = thunk_convert(buf_temp + dst_offsets[i], 5456 argptr + src_offsets[i], 5457 field_types, THUNK_HOST); 5458 } 5459 unlock_user(argptr, arg, 0); 5460 5461 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5462 5463 assert(host_rt_dev_ptr != NULL); 5464 assert(target_rt_dev_ptr != NULL); 5465 if (*host_rt_dev_ptr != 0) { 5466 unlock_user((void *)*host_rt_dev_ptr, 5467 *target_rt_dev_ptr, 0); 5468 } 5469 return ret; 5470 } 5471 5472 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5473 int fd, int cmd, abi_long arg) 5474 { 5475 int sig = target_to_host_signal(arg); 5476 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5477 } 5478 5479 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp, 5480 int fd, int cmd, abi_long arg) 5481 { 5482 struct timeval tv; 5483 abi_long ret; 5484 5485 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv)); 5486 if (is_error(ret)) { 5487 return ret; 5488 } 5489 5490 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) { 5491 if (copy_to_user_timeval(arg, &tv)) { 5492 return -TARGET_EFAULT; 5493 } 5494 } else { 5495 if (copy_to_user_timeval64(arg, &tv)) { 5496 return -TARGET_EFAULT; 5497 } 5498 } 5499 5500 return ret; 5501 } 5502 5503 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp, 5504 int fd, int cmd, abi_long arg) 5505 { 5506 struct timespec ts; 5507 abi_long ret; 5508 5509 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts)); 5510 if (is_error(ret)) { 5511 return ret; 5512 } 5513 5514 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) { 5515 if (host_to_target_timespec(arg, &ts)) { 5516 return -TARGET_EFAULT; 5517 } 5518 } else{ 5519 if (host_to_target_timespec64(arg, &ts)) { 5520 return -TARGET_EFAULT; 5521 } 5522 } 5523 5524 return ret; 5525 } 5526 5527 #ifdef TIOCGPTPEER 5528 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, 5529 int fd, int cmd, abi_long arg) 5530 { 5531 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl); 5532 return get_errno(safe_ioctl(fd, ie->host_cmd, flags)); 5533 } 5534 #endif 5535 5536 #ifdef HAVE_DRM_H 5537 5538 static void unlock_drm_version(struct drm_version *host_ver, 5539 struct target_drm_version *target_ver, 5540 bool copy) 5541 { 5542 unlock_user(host_ver->name, target_ver->name, 5543 copy ? host_ver->name_len : 0); 5544 unlock_user(host_ver->date, target_ver->date, 5545 copy ? host_ver->date_len : 0); 5546 unlock_user(host_ver->desc, target_ver->desc, 5547 copy ? host_ver->desc_len : 0); 5548 } 5549 5550 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, 5551 struct target_drm_version *target_ver) 5552 { 5553 memset(host_ver, 0, sizeof(*host_ver)); 5554 5555 __get_user(host_ver->name_len, &target_ver->name_len); 5556 if (host_ver->name_len) { 5557 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name, 5558 target_ver->name_len, 0); 5559 if (!host_ver->name) { 5560 return -EFAULT; 5561 } 5562 } 5563 5564 __get_user(host_ver->date_len, &target_ver->date_len); 5565 if (host_ver->date_len) { 5566 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date, 5567 target_ver->date_len, 0); 5568 if (!host_ver->date) { 5569 goto err; 5570 } 5571 } 5572 5573 __get_user(host_ver->desc_len, &target_ver->desc_len); 5574 if (host_ver->desc_len) { 5575 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc, 5576 target_ver->desc_len, 0); 5577 if (!host_ver->desc) { 5578 goto err; 5579 } 5580 } 5581 5582 return 0; 5583 err: 5584 unlock_drm_version(host_ver, target_ver, false); 5585 return -EFAULT; 5586 } 5587 5588 static inline void host_to_target_drmversion( 5589 struct target_drm_version *target_ver, 5590 struct drm_version *host_ver) 5591 { 5592 __put_user(host_ver->version_major, &target_ver->version_major); 5593 __put_user(host_ver->version_minor, &target_ver->version_minor); 5594 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel); 5595 __put_user(host_ver->name_len, &target_ver->name_len); 5596 __put_user(host_ver->date_len, &target_ver->date_len); 5597 __put_user(host_ver->desc_len, &target_ver->desc_len); 5598 unlock_drm_version(host_ver, target_ver, true); 5599 } 5600 5601 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, 5602 int fd, int cmd, abi_long arg) 5603 { 5604 struct drm_version *ver; 5605 struct target_drm_version *target_ver; 5606 abi_long ret; 5607 5608 switch (ie->host_cmd) { 5609 case DRM_IOCTL_VERSION: 5610 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) { 5611 return -TARGET_EFAULT; 5612 } 5613 ver = (struct drm_version *)buf_temp; 5614 ret = target_to_host_drmversion(ver, target_ver); 5615 if (!is_error(ret)) { 5616 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); 5617 if (is_error(ret)) { 5618 unlock_drm_version(ver, target_ver, false); 5619 } else { 5620 host_to_target_drmversion(target_ver, ver); 5621 } 5622 } 5623 unlock_user_struct(target_ver, arg, 0); 5624 return ret; 5625 } 5626 return -TARGET_ENOSYS; 5627 } 5628 5629 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie, 5630 struct drm_i915_getparam *gparam, 5631 int fd, abi_long arg) 5632 { 5633 abi_long ret; 5634 int value; 5635 struct target_drm_i915_getparam *target_gparam; 5636 5637 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) { 5638 return -TARGET_EFAULT; 5639 } 5640 5641 __get_user(gparam->param, &target_gparam->param); 5642 gparam->value = &value; 5643 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam)); 5644 put_user_s32(value, target_gparam->value); 5645 5646 unlock_user_struct(target_gparam, arg, 0); 5647 return ret; 5648 } 5649 5650 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp, 5651 int fd, int cmd, abi_long arg) 5652 { 5653 switch (ie->host_cmd) { 5654 case DRM_IOCTL_I915_GETPARAM: 5655 return do_ioctl_drm_i915_getparam(ie, 5656 (struct drm_i915_getparam *)buf_temp, 5657 fd, arg); 5658 default: 5659 return -TARGET_ENOSYS; 5660 } 5661 } 5662 5663 #endif 5664 5665 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp, 5666 int fd, int cmd, abi_long arg) 5667 { 5668 struct tun_filter *filter = (struct tun_filter *)buf_temp; 5669 struct tun_filter *target_filter; 5670 char *target_addr; 5671 5672 assert(ie->access == IOC_W); 5673 5674 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1); 5675 if (!target_filter) { 5676 return -TARGET_EFAULT; 5677 } 5678 filter->flags = tswap16(target_filter->flags); 5679 filter->count = tswap16(target_filter->count); 5680 unlock_user(target_filter, arg, 0); 5681 5682 if (filter->count) { 5683 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN > 5684 MAX_STRUCT_SIZE) { 5685 return -TARGET_EFAULT; 5686 } 5687 5688 target_addr = lock_user(VERIFY_READ, 5689 arg + offsetof(struct tun_filter, addr), 5690 filter->count * ETH_ALEN, 1); 5691 if (!target_addr) { 5692 return -TARGET_EFAULT; 5693 } 5694 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN); 5695 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0); 5696 } 5697 5698 return get_errno(safe_ioctl(fd, ie->host_cmd, filter)); 5699 } 5700 5701 IOCTLEntry ioctl_entries[] = { 5702 #define IOCTL(cmd, access, ...) \ 5703 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5704 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5705 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5706 #define IOCTL_IGNORE(cmd) \ 5707 { TARGET_ ## cmd, 0, #cmd }, 5708 #include "ioctls.h" 5709 { 0, 0, }, 5710 }; 5711 5712 /* ??? Implement proper locking for ioctls. */ 5713 /* do_ioctl() Must return target values and target errnos. */ 5714 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5715 { 5716 const IOCTLEntry *ie; 5717 const argtype *arg_type; 5718 abi_long ret; 5719 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5720 int target_size; 5721 void *argptr; 5722 5723 ie = ioctl_entries; 5724 for(;;) { 5725 if (ie->target_cmd == 0) { 5726 qemu_log_mask( 5727 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5728 return -TARGET_ENOSYS; 5729 } 5730 if (ie->target_cmd == cmd) 5731 break; 5732 ie++; 5733 } 5734 arg_type = ie->arg_type; 5735 if (ie->do_ioctl) { 5736 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5737 } else if (!ie->host_cmd) { 5738 /* Some architectures define BSD ioctls in their headers 5739 that are not implemented in Linux. */ 5740 return -TARGET_ENOSYS; 5741 } 5742 5743 switch(arg_type[0]) { 5744 case TYPE_NULL: 5745 /* no argument */ 5746 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5747 break; 5748 case TYPE_PTRVOID: 5749 case TYPE_INT: 5750 case TYPE_LONG: 5751 case TYPE_ULONG: 5752 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5753 break; 5754 case TYPE_PTR: 5755 arg_type++; 5756 target_size = thunk_type_size(arg_type, 0); 5757 switch(ie->access) { 5758 case IOC_R: 5759 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5760 if (!is_error(ret)) { 5761 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5762 if (!argptr) 5763 return -TARGET_EFAULT; 5764 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5765 unlock_user(argptr, arg, target_size); 5766 } 5767 break; 5768 case IOC_W: 5769 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5770 if (!argptr) 5771 return -TARGET_EFAULT; 5772 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5773 unlock_user(argptr, arg, 0); 5774 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5775 break; 5776 default: 5777 case IOC_RW: 5778 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5779 if (!argptr) 5780 return -TARGET_EFAULT; 5781 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5782 unlock_user(argptr, arg, 0); 5783 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5784 if (!is_error(ret)) { 5785 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5786 if (!argptr) 5787 return -TARGET_EFAULT; 5788 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5789 unlock_user(argptr, arg, target_size); 5790 } 5791 break; 5792 } 5793 break; 5794 default: 5795 qemu_log_mask(LOG_UNIMP, 5796 "Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5797 (long)cmd, arg_type[0]); 5798 ret = -TARGET_ENOSYS; 5799 break; 5800 } 5801 return ret; 5802 } 5803 5804 static const bitmask_transtbl iflag_tbl[] = { 5805 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5806 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5807 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5808 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5809 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5810 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5811 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5812 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5813 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5814 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5815 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5816 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5817 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5818 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5819 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8}, 5820 { 0, 0, 0, 0 } 5821 }; 5822 5823 static const bitmask_transtbl oflag_tbl[] = { 5824 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5825 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5826 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5827 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5828 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5829 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5830 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5831 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5832 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5833 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5834 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5835 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5836 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5837 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5838 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5839 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5840 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5841 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5842 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5843 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5844 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5845 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5846 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5847 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5848 { 0, 0, 0, 0 } 5849 }; 5850 5851 static const bitmask_transtbl cflag_tbl[] = { 5852 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5853 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5854 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5855 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5856 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5857 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5858 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5859 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5860 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5861 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5862 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5863 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5864 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5865 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5866 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5867 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5868 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5869 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5870 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5871 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5872 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5873 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5874 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5875 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5876 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5877 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5878 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5879 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5880 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5881 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5882 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5883 { 0, 0, 0, 0 } 5884 }; 5885 5886 static const bitmask_transtbl lflag_tbl[] = { 5887 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5888 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5889 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5890 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5891 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5892 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5893 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5894 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5895 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5896 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5897 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5898 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5899 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5900 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5901 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5902 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC}, 5903 { 0, 0, 0, 0 } 5904 }; 5905 5906 static void target_to_host_termios (void *dst, const void *src) 5907 { 5908 struct host_termios *host = dst; 5909 const struct target_termios *target = src; 5910 5911 host->c_iflag = 5912 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5913 host->c_oflag = 5914 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5915 host->c_cflag = 5916 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5917 host->c_lflag = 5918 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 5919 host->c_line = target->c_line; 5920 5921 memset(host->c_cc, 0, sizeof(host->c_cc)); 5922 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 5923 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 5924 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 5925 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 5926 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 5927 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 5928 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 5929 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 5930 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 5931 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 5932 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 5933 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 5934 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 5935 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 5936 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 5937 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 5938 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 5939 } 5940 5941 static void host_to_target_termios (void *dst, const void *src) 5942 { 5943 struct target_termios *target = dst; 5944 const struct host_termios *host = src; 5945 5946 target->c_iflag = 5947 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 5948 target->c_oflag = 5949 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 5950 target->c_cflag = 5951 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 5952 target->c_lflag = 5953 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 5954 target->c_line = host->c_line; 5955 5956 memset(target->c_cc, 0, sizeof(target->c_cc)); 5957 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 5958 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 5959 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 5960 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 5961 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 5962 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 5963 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 5964 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 5965 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 5966 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 5967 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 5968 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 5969 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 5970 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 5971 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 5972 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 5973 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 5974 } 5975 5976 static const StructEntry struct_termios_def = { 5977 .convert = { host_to_target_termios, target_to_host_termios }, 5978 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 5979 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 5980 .print = print_termios, 5981 }; 5982 5983 static const bitmask_transtbl mmap_flags_tbl[] = { 5984 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 5985 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 5986 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 5987 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, 5988 MAP_ANONYMOUS, MAP_ANONYMOUS }, 5989 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, 5990 MAP_GROWSDOWN, MAP_GROWSDOWN }, 5991 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, 5992 MAP_DENYWRITE, MAP_DENYWRITE }, 5993 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, 5994 MAP_EXECUTABLE, MAP_EXECUTABLE }, 5995 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 5996 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, 5997 MAP_NORESERVE, MAP_NORESERVE }, 5998 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB }, 5999 /* MAP_STACK had been ignored by the kernel for quite some time. 6000 Recognize it for the target insofar as we do not want to pass 6001 it through to the host. */ 6002 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 }, 6003 { 0, 0, 0, 0 } 6004 }; 6005 6006 /* 6007 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64) 6008 * TARGET_I386 is defined if TARGET_X86_64 is defined 6009 */ 6010 #if defined(TARGET_I386) 6011 6012 /* NOTE: there is really one LDT for all the threads */ 6013 static uint8_t *ldt_table; 6014 6015 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 6016 { 6017 int size; 6018 void *p; 6019 6020 if (!ldt_table) 6021 return 0; 6022 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 6023 if (size > bytecount) 6024 size = bytecount; 6025 p = lock_user(VERIFY_WRITE, ptr, size, 0); 6026 if (!p) 6027 return -TARGET_EFAULT; 6028 /* ??? Should this by byteswapped? */ 6029 memcpy(p, ldt_table, size); 6030 unlock_user(p, ptr, size); 6031 return size; 6032 } 6033 6034 /* XXX: add locking support */ 6035 static abi_long write_ldt(CPUX86State *env, 6036 abi_ulong ptr, unsigned long bytecount, int oldmode) 6037 { 6038 struct target_modify_ldt_ldt_s ldt_info; 6039 struct target_modify_ldt_ldt_s *target_ldt_info; 6040 int seg_32bit, contents, read_exec_only, limit_in_pages; 6041 int seg_not_present, useable, lm; 6042 uint32_t *lp, entry_1, entry_2; 6043 6044 if (bytecount != sizeof(ldt_info)) 6045 return -TARGET_EINVAL; 6046 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 6047 return -TARGET_EFAULT; 6048 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6049 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6050 ldt_info.limit = tswap32(target_ldt_info->limit); 6051 ldt_info.flags = tswap32(target_ldt_info->flags); 6052 unlock_user_struct(target_ldt_info, ptr, 0); 6053 6054 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 6055 return -TARGET_EINVAL; 6056 seg_32bit = ldt_info.flags & 1; 6057 contents = (ldt_info.flags >> 1) & 3; 6058 read_exec_only = (ldt_info.flags >> 3) & 1; 6059 limit_in_pages = (ldt_info.flags >> 4) & 1; 6060 seg_not_present = (ldt_info.flags >> 5) & 1; 6061 useable = (ldt_info.flags >> 6) & 1; 6062 #ifdef TARGET_ABI32 6063 lm = 0; 6064 #else 6065 lm = (ldt_info.flags >> 7) & 1; 6066 #endif 6067 if (contents == 3) { 6068 if (oldmode) 6069 return -TARGET_EINVAL; 6070 if (seg_not_present == 0) 6071 return -TARGET_EINVAL; 6072 } 6073 /* allocate the LDT */ 6074 if (!ldt_table) { 6075 env->ldt.base = target_mmap(0, 6076 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 6077 PROT_READ|PROT_WRITE, 6078 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 6079 if (env->ldt.base == -1) 6080 return -TARGET_ENOMEM; 6081 memset(g2h_untagged(env->ldt.base), 0, 6082 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 6083 env->ldt.limit = 0xffff; 6084 ldt_table = g2h_untagged(env->ldt.base); 6085 } 6086 6087 /* NOTE: same code as Linux kernel */ 6088 /* Allow LDTs to be cleared by the user. */ 6089 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6090 if (oldmode || 6091 (contents == 0 && 6092 read_exec_only == 1 && 6093 seg_32bit == 0 && 6094 limit_in_pages == 0 && 6095 seg_not_present == 1 && 6096 useable == 0 )) { 6097 entry_1 = 0; 6098 entry_2 = 0; 6099 goto install; 6100 } 6101 } 6102 6103 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6104 (ldt_info.limit & 0x0ffff); 6105 entry_2 = (ldt_info.base_addr & 0xff000000) | 6106 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6107 (ldt_info.limit & 0xf0000) | 6108 ((read_exec_only ^ 1) << 9) | 6109 (contents << 10) | 6110 ((seg_not_present ^ 1) << 15) | 6111 (seg_32bit << 22) | 6112 (limit_in_pages << 23) | 6113 (lm << 21) | 6114 0x7000; 6115 if (!oldmode) 6116 entry_2 |= (useable << 20); 6117 6118 /* Install the new entry ... */ 6119 install: 6120 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 6121 lp[0] = tswap32(entry_1); 6122 lp[1] = tswap32(entry_2); 6123 return 0; 6124 } 6125 6126 /* specific and weird i386 syscalls */ 6127 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6128 unsigned long bytecount) 6129 { 6130 abi_long ret; 6131 6132 switch (func) { 6133 case 0: 6134 ret = read_ldt(ptr, bytecount); 6135 break; 6136 case 1: 6137 ret = write_ldt(env, ptr, bytecount, 1); 6138 break; 6139 case 0x11: 6140 ret = write_ldt(env, ptr, bytecount, 0); 6141 break; 6142 default: 6143 ret = -TARGET_ENOSYS; 6144 break; 6145 } 6146 return ret; 6147 } 6148 6149 #if defined(TARGET_ABI32) 6150 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6151 { 6152 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6153 struct target_modify_ldt_ldt_s ldt_info; 6154 struct target_modify_ldt_ldt_s *target_ldt_info; 6155 int seg_32bit, contents, read_exec_only, limit_in_pages; 6156 int seg_not_present, useable, lm; 6157 uint32_t *lp, entry_1, entry_2; 6158 int i; 6159 6160 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6161 if (!target_ldt_info) 6162 return -TARGET_EFAULT; 6163 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6164 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6165 ldt_info.limit = tswap32(target_ldt_info->limit); 6166 ldt_info.flags = tswap32(target_ldt_info->flags); 6167 if (ldt_info.entry_number == -1) { 6168 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6169 if (gdt_table[i] == 0) { 6170 ldt_info.entry_number = i; 6171 target_ldt_info->entry_number = tswap32(i); 6172 break; 6173 } 6174 } 6175 } 6176 unlock_user_struct(target_ldt_info, ptr, 1); 6177 6178 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6179 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6180 return -TARGET_EINVAL; 6181 seg_32bit = ldt_info.flags & 1; 6182 contents = (ldt_info.flags >> 1) & 3; 6183 read_exec_only = (ldt_info.flags >> 3) & 1; 6184 limit_in_pages = (ldt_info.flags >> 4) & 1; 6185 seg_not_present = (ldt_info.flags >> 5) & 1; 6186 useable = (ldt_info.flags >> 6) & 1; 6187 #ifdef TARGET_ABI32 6188 lm = 0; 6189 #else 6190 lm = (ldt_info.flags >> 7) & 1; 6191 #endif 6192 6193 if (contents == 3) { 6194 if (seg_not_present == 0) 6195 return -TARGET_EINVAL; 6196 } 6197 6198 /* NOTE: same code as Linux kernel */ 6199 /* Allow LDTs to be cleared by the user. */ 6200 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6201 if ((contents == 0 && 6202 read_exec_only == 1 && 6203 seg_32bit == 0 && 6204 limit_in_pages == 0 && 6205 seg_not_present == 1 && 6206 useable == 0 )) { 6207 entry_1 = 0; 6208 entry_2 = 0; 6209 goto install; 6210 } 6211 } 6212 6213 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6214 (ldt_info.limit & 0x0ffff); 6215 entry_2 = (ldt_info.base_addr & 0xff000000) | 6216 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6217 (ldt_info.limit & 0xf0000) | 6218 ((read_exec_only ^ 1) << 9) | 6219 (contents << 10) | 6220 ((seg_not_present ^ 1) << 15) | 6221 (seg_32bit << 22) | 6222 (limit_in_pages << 23) | 6223 (useable << 20) | 6224 (lm << 21) | 6225 0x7000; 6226 6227 /* Install the new entry ... */ 6228 install: 6229 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6230 lp[0] = tswap32(entry_1); 6231 lp[1] = tswap32(entry_2); 6232 return 0; 6233 } 6234 6235 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6236 { 6237 struct target_modify_ldt_ldt_s *target_ldt_info; 6238 uint64_t *gdt_table = g2h_untagged(env->gdt.base); 6239 uint32_t base_addr, limit, flags; 6240 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6241 int seg_not_present, useable, lm; 6242 uint32_t *lp, entry_1, entry_2; 6243 6244 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6245 if (!target_ldt_info) 6246 return -TARGET_EFAULT; 6247 idx = tswap32(target_ldt_info->entry_number); 6248 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6249 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6250 unlock_user_struct(target_ldt_info, ptr, 1); 6251 return -TARGET_EINVAL; 6252 } 6253 lp = (uint32_t *)(gdt_table + idx); 6254 entry_1 = tswap32(lp[0]); 6255 entry_2 = tswap32(lp[1]); 6256 6257 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6258 contents = (entry_2 >> 10) & 3; 6259 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6260 seg_32bit = (entry_2 >> 22) & 1; 6261 limit_in_pages = (entry_2 >> 23) & 1; 6262 useable = (entry_2 >> 20) & 1; 6263 #ifdef TARGET_ABI32 6264 lm = 0; 6265 #else 6266 lm = (entry_2 >> 21) & 1; 6267 #endif 6268 flags = (seg_32bit << 0) | (contents << 1) | 6269 (read_exec_only << 3) | (limit_in_pages << 4) | 6270 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6271 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6272 base_addr = (entry_1 >> 16) | 6273 (entry_2 & 0xff000000) | 6274 ((entry_2 & 0xff) << 16); 6275 target_ldt_info->base_addr = tswapal(base_addr); 6276 target_ldt_info->limit = tswap32(limit); 6277 target_ldt_info->flags = tswap32(flags); 6278 unlock_user_struct(target_ldt_info, ptr, 1); 6279 return 0; 6280 } 6281 6282 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6283 { 6284 return -TARGET_ENOSYS; 6285 } 6286 #else 6287 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6288 { 6289 abi_long ret = 0; 6290 abi_ulong val; 6291 int idx; 6292 6293 switch(code) { 6294 case TARGET_ARCH_SET_GS: 6295 case TARGET_ARCH_SET_FS: 6296 if (code == TARGET_ARCH_SET_GS) 6297 idx = R_GS; 6298 else 6299 idx = R_FS; 6300 cpu_x86_load_seg(env, idx, 0); 6301 env->segs[idx].base = addr; 6302 break; 6303 case TARGET_ARCH_GET_GS: 6304 case TARGET_ARCH_GET_FS: 6305 if (code == TARGET_ARCH_GET_GS) 6306 idx = R_GS; 6307 else 6308 idx = R_FS; 6309 val = env->segs[idx].base; 6310 if (put_user(val, addr, abi_ulong)) 6311 ret = -TARGET_EFAULT; 6312 break; 6313 default: 6314 ret = -TARGET_EINVAL; 6315 break; 6316 } 6317 return ret; 6318 } 6319 #endif /* defined(TARGET_ABI32 */ 6320 #endif /* defined(TARGET_I386) */ 6321 6322 /* 6323 * These constants are generic. Supply any that are missing from the host. 6324 */ 6325 #ifndef PR_SET_NAME 6326 # define PR_SET_NAME 15 6327 # define PR_GET_NAME 16 6328 #endif 6329 #ifndef PR_SET_FP_MODE 6330 # define PR_SET_FP_MODE 45 6331 # define PR_GET_FP_MODE 46 6332 # define PR_FP_MODE_FR (1 << 0) 6333 # define PR_FP_MODE_FRE (1 << 1) 6334 #endif 6335 #ifndef PR_SVE_SET_VL 6336 # define PR_SVE_SET_VL 50 6337 # define PR_SVE_GET_VL 51 6338 # define PR_SVE_VL_LEN_MASK 0xffff 6339 # define PR_SVE_VL_INHERIT (1 << 17) 6340 #endif 6341 #ifndef PR_PAC_RESET_KEYS 6342 # define PR_PAC_RESET_KEYS 54 6343 # define PR_PAC_APIAKEY (1 << 0) 6344 # define PR_PAC_APIBKEY (1 << 1) 6345 # define PR_PAC_APDAKEY (1 << 2) 6346 # define PR_PAC_APDBKEY (1 << 3) 6347 # define PR_PAC_APGAKEY (1 << 4) 6348 #endif 6349 #ifndef PR_SET_TAGGED_ADDR_CTRL 6350 # define PR_SET_TAGGED_ADDR_CTRL 55 6351 # define PR_GET_TAGGED_ADDR_CTRL 56 6352 # define PR_TAGGED_ADDR_ENABLE (1UL << 0) 6353 #endif 6354 #ifndef PR_MTE_TCF_SHIFT 6355 # define PR_MTE_TCF_SHIFT 1 6356 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 6357 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 6358 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 6359 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT) 6360 # define PR_MTE_TAG_SHIFT 3 6361 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT) 6362 #endif 6363 #ifndef PR_SET_IO_FLUSHER 6364 # define PR_SET_IO_FLUSHER 57 6365 # define PR_GET_IO_FLUSHER 58 6366 #endif 6367 #ifndef PR_SET_SYSCALL_USER_DISPATCH 6368 # define PR_SET_SYSCALL_USER_DISPATCH 59 6369 #endif 6370 #ifndef PR_SME_SET_VL 6371 # define PR_SME_SET_VL 63 6372 # define PR_SME_GET_VL 64 6373 # define PR_SME_VL_LEN_MASK 0xffff 6374 # define PR_SME_VL_INHERIT (1 << 17) 6375 #endif 6376 6377 #include "target_prctl.h" 6378 6379 static abi_long do_prctl_inval0(CPUArchState *env) 6380 { 6381 return -TARGET_EINVAL; 6382 } 6383 6384 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2) 6385 { 6386 return -TARGET_EINVAL; 6387 } 6388 6389 #ifndef do_prctl_get_fp_mode 6390 #define do_prctl_get_fp_mode do_prctl_inval0 6391 #endif 6392 #ifndef do_prctl_set_fp_mode 6393 #define do_prctl_set_fp_mode do_prctl_inval1 6394 #endif 6395 #ifndef do_prctl_sve_get_vl 6396 #define do_prctl_sve_get_vl do_prctl_inval0 6397 #endif 6398 #ifndef do_prctl_sve_set_vl 6399 #define do_prctl_sve_set_vl do_prctl_inval1 6400 #endif 6401 #ifndef do_prctl_reset_keys 6402 #define do_prctl_reset_keys do_prctl_inval1 6403 #endif 6404 #ifndef do_prctl_set_tagged_addr_ctrl 6405 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1 6406 #endif 6407 #ifndef do_prctl_get_tagged_addr_ctrl 6408 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0 6409 #endif 6410 #ifndef do_prctl_get_unalign 6411 #define do_prctl_get_unalign do_prctl_inval1 6412 #endif 6413 #ifndef do_prctl_set_unalign 6414 #define do_prctl_set_unalign do_prctl_inval1 6415 #endif 6416 #ifndef do_prctl_sme_get_vl 6417 #define do_prctl_sme_get_vl do_prctl_inval0 6418 #endif 6419 #ifndef do_prctl_sme_set_vl 6420 #define do_prctl_sme_set_vl do_prctl_inval1 6421 #endif 6422 6423 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2, 6424 abi_long arg3, abi_long arg4, abi_long arg5) 6425 { 6426 abi_long ret; 6427 6428 switch (option) { 6429 case PR_GET_PDEATHSIG: 6430 { 6431 int deathsig; 6432 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig, 6433 arg3, arg4, arg5)); 6434 if (!is_error(ret) && 6435 put_user_s32(host_to_target_signal(deathsig), arg2)) { 6436 return -TARGET_EFAULT; 6437 } 6438 return ret; 6439 } 6440 case PR_SET_PDEATHSIG: 6441 return get_errno(prctl(PR_SET_PDEATHSIG, target_to_host_signal(arg2), 6442 arg3, arg4, arg5)); 6443 case PR_GET_NAME: 6444 { 6445 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 6446 if (!name) { 6447 return -TARGET_EFAULT; 6448 } 6449 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name, 6450 arg3, arg4, arg5)); 6451 unlock_user(name, arg2, 16); 6452 return ret; 6453 } 6454 case PR_SET_NAME: 6455 { 6456 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 6457 if (!name) { 6458 return -TARGET_EFAULT; 6459 } 6460 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name, 6461 arg3, arg4, arg5)); 6462 unlock_user(name, arg2, 0); 6463 return ret; 6464 } 6465 case PR_GET_FP_MODE: 6466 return do_prctl_get_fp_mode(env); 6467 case PR_SET_FP_MODE: 6468 return do_prctl_set_fp_mode(env, arg2); 6469 case PR_SVE_GET_VL: 6470 return do_prctl_sve_get_vl(env); 6471 case PR_SVE_SET_VL: 6472 return do_prctl_sve_set_vl(env, arg2); 6473 case PR_SME_GET_VL: 6474 return do_prctl_sme_get_vl(env); 6475 case PR_SME_SET_VL: 6476 return do_prctl_sme_set_vl(env, arg2); 6477 case PR_PAC_RESET_KEYS: 6478 if (arg3 || arg4 || arg5) { 6479 return -TARGET_EINVAL; 6480 } 6481 return do_prctl_reset_keys(env, arg2); 6482 case PR_SET_TAGGED_ADDR_CTRL: 6483 if (arg3 || arg4 || arg5) { 6484 return -TARGET_EINVAL; 6485 } 6486 return do_prctl_set_tagged_addr_ctrl(env, arg2); 6487 case PR_GET_TAGGED_ADDR_CTRL: 6488 if (arg2 || arg3 || arg4 || arg5) { 6489 return -TARGET_EINVAL; 6490 } 6491 return do_prctl_get_tagged_addr_ctrl(env); 6492 6493 case PR_GET_UNALIGN: 6494 return do_prctl_get_unalign(env, arg2); 6495 case PR_SET_UNALIGN: 6496 return do_prctl_set_unalign(env, arg2); 6497 6498 case PR_CAP_AMBIENT: 6499 case PR_CAPBSET_READ: 6500 case PR_CAPBSET_DROP: 6501 case PR_GET_DUMPABLE: 6502 case PR_SET_DUMPABLE: 6503 case PR_GET_KEEPCAPS: 6504 case PR_SET_KEEPCAPS: 6505 case PR_GET_SECUREBITS: 6506 case PR_SET_SECUREBITS: 6507 case PR_GET_TIMING: 6508 case PR_SET_TIMING: 6509 case PR_GET_TIMERSLACK: 6510 case PR_SET_TIMERSLACK: 6511 case PR_MCE_KILL: 6512 case PR_MCE_KILL_GET: 6513 case PR_GET_NO_NEW_PRIVS: 6514 case PR_SET_NO_NEW_PRIVS: 6515 case PR_GET_IO_FLUSHER: 6516 case PR_SET_IO_FLUSHER: 6517 /* Some prctl options have no pointer arguments and we can pass on. */ 6518 return get_errno(prctl(option, arg2, arg3, arg4, arg5)); 6519 6520 case PR_GET_CHILD_SUBREAPER: 6521 case PR_SET_CHILD_SUBREAPER: 6522 case PR_GET_SPECULATION_CTRL: 6523 case PR_SET_SPECULATION_CTRL: 6524 case PR_GET_TID_ADDRESS: 6525 /* TODO */ 6526 return -TARGET_EINVAL; 6527 6528 case PR_GET_FPEXC: 6529 case PR_SET_FPEXC: 6530 /* Was used for SPE on PowerPC. */ 6531 return -TARGET_EINVAL; 6532 6533 case PR_GET_ENDIAN: 6534 case PR_SET_ENDIAN: 6535 case PR_GET_FPEMU: 6536 case PR_SET_FPEMU: 6537 case PR_SET_MM: 6538 case PR_GET_SECCOMP: 6539 case PR_SET_SECCOMP: 6540 case PR_SET_SYSCALL_USER_DISPATCH: 6541 case PR_GET_THP_DISABLE: 6542 case PR_SET_THP_DISABLE: 6543 case PR_GET_TSC: 6544 case PR_SET_TSC: 6545 /* Disable to prevent the target disabling stuff we need. */ 6546 return -TARGET_EINVAL; 6547 6548 default: 6549 qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n", 6550 option); 6551 return -TARGET_EINVAL; 6552 } 6553 } 6554 6555 #define NEW_STACK_SIZE 0x40000 6556 6557 6558 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6559 typedef struct { 6560 CPUArchState *env; 6561 pthread_mutex_t mutex; 6562 pthread_cond_t cond; 6563 pthread_t thread; 6564 uint32_t tid; 6565 abi_ulong child_tidptr; 6566 abi_ulong parent_tidptr; 6567 sigset_t sigmask; 6568 } new_thread_info; 6569 6570 static void *clone_func(void *arg) 6571 { 6572 new_thread_info *info = arg; 6573 CPUArchState *env; 6574 CPUState *cpu; 6575 TaskState *ts; 6576 6577 rcu_register_thread(); 6578 tcg_register_thread(); 6579 env = info->env; 6580 cpu = env_cpu(env); 6581 thread_cpu = cpu; 6582 ts = (TaskState *)cpu->opaque; 6583 info->tid = sys_gettid(); 6584 task_settid(ts); 6585 if (info->child_tidptr) 6586 put_user_u32(info->tid, info->child_tidptr); 6587 if (info->parent_tidptr) 6588 put_user_u32(info->tid, info->parent_tidptr); 6589 qemu_guest_random_seed_thread_part2(cpu->random_seed); 6590 /* Enable signals. */ 6591 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6592 /* Signal to the parent that we're ready. */ 6593 pthread_mutex_lock(&info->mutex); 6594 pthread_cond_broadcast(&info->cond); 6595 pthread_mutex_unlock(&info->mutex); 6596 /* Wait until the parent has finished initializing the tls state. */ 6597 pthread_mutex_lock(&clone_lock); 6598 pthread_mutex_unlock(&clone_lock); 6599 cpu_loop(env); 6600 /* never exits */ 6601 return NULL; 6602 } 6603 6604 /* do_fork() Must return host values and target errnos (unlike most 6605 do_*() functions). */ 6606 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6607 abi_ulong parent_tidptr, target_ulong newtls, 6608 abi_ulong child_tidptr) 6609 { 6610 CPUState *cpu = env_cpu(env); 6611 int ret; 6612 TaskState *ts; 6613 CPUState *new_cpu; 6614 CPUArchState *new_env; 6615 sigset_t sigmask; 6616 6617 flags &= ~CLONE_IGNORED_FLAGS; 6618 6619 /* Emulate vfork() with fork() */ 6620 if (flags & CLONE_VFORK) 6621 flags &= ~(CLONE_VFORK | CLONE_VM); 6622 6623 if (flags & CLONE_VM) { 6624 TaskState *parent_ts = (TaskState *)cpu->opaque; 6625 new_thread_info info; 6626 pthread_attr_t attr; 6627 6628 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6629 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6630 return -TARGET_EINVAL; 6631 } 6632 6633 ts = g_new0(TaskState, 1); 6634 init_task_state(ts); 6635 6636 /* Grab a mutex so that thread setup appears atomic. */ 6637 pthread_mutex_lock(&clone_lock); 6638 6639 /* 6640 * If this is our first additional thread, we need to ensure we 6641 * generate code for parallel execution and flush old translations. 6642 * Do this now so that the copy gets CF_PARALLEL too. 6643 */ 6644 if (!(cpu->tcg_cflags & CF_PARALLEL)) { 6645 cpu->tcg_cflags |= CF_PARALLEL; 6646 tb_flush(cpu); 6647 } 6648 6649 /* we create a new CPU instance. */ 6650 new_env = cpu_copy(env); 6651 /* Init regs that differ from the parent. */ 6652 cpu_clone_regs_child(new_env, newsp, flags); 6653 cpu_clone_regs_parent(env, flags); 6654 new_cpu = env_cpu(new_env); 6655 new_cpu->opaque = ts; 6656 ts->bprm = parent_ts->bprm; 6657 ts->info = parent_ts->info; 6658 ts->signal_mask = parent_ts->signal_mask; 6659 6660 if (flags & CLONE_CHILD_CLEARTID) { 6661 ts->child_tidptr = child_tidptr; 6662 } 6663 6664 if (flags & CLONE_SETTLS) { 6665 cpu_set_tls (new_env, newtls); 6666 } 6667 6668 memset(&info, 0, sizeof(info)); 6669 pthread_mutex_init(&info.mutex, NULL); 6670 pthread_mutex_lock(&info.mutex); 6671 pthread_cond_init(&info.cond, NULL); 6672 info.env = new_env; 6673 if (flags & CLONE_CHILD_SETTID) { 6674 info.child_tidptr = child_tidptr; 6675 } 6676 if (flags & CLONE_PARENT_SETTID) { 6677 info.parent_tidptr = parent_tidptr; 6678 } 6679 6680 ret = pthread_attr_init(&attr); 6681 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6682 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6683 /* It is not safe to deliver signals until the child has finished 6684 initializing, so temporarily block all signals. */ 6685 sigfillset(&sigmask); 6686 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6687 cpu->random_seed = qemu_guest_random_seed_thread_part1(); 6688 6689 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6690 /* TODO: Free new CPU state if thread creation failed. */ 6691 6692 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6693 pthread_attr_destroy(&attr); 6694 if (ret == 0) { 6695 /* Wait for the child to initialize. */ 6696 pthread_cond_wait(&info.cond, &info.mutex); 6697 ret = info.tid; 6698 } else { 6699 ret = -1; 6700 } 6701 pthread_mutex_unlock(&info.mutex); 6702 pthread_cond_destroy(&info.cond); 6703 pthread_mutex_destroy(&info.mutex); 6704 pthread_mutex_unlock(&clone_lock); 6705 } else { 6706 /* if no CLONE_VM, we consider it is a fork */ 6707 if (flags & CLONE_INVALID_FORK_FLAGS) { 6708 return -TARGET_EINVAL; 6709 } 6710 6711 /* We can't support custom termination signals */ 6712 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6713 return -TARGET_EINVAL; 6714 } 6715 6716 if (block_signals()) { 6717 return -QEMU_ERESTARTSYS; 6718 } 6719 6720 fork_start(); 6721 ret = fork(); 6722 if (ret == 0) { 6723 /* Child Process. */ 6724 cpu_clone_regs_child(env, newsp, flags); 6725 fork_end(1); 6726 /* There is a race condition here. The parent process could 6727 theoretically read the TID in the child process before the child 6728 tid is set. This would require using either ptrace 6729 (not implemented) or having *_tidptr to point at a shared memory 6730 mapping. We can't repeat the spinlock hack used above because 6731 the child process gets its own copy of the lock. */ 6732 if (flags & CLONE_CHILD_SETTID) 6733 put_user_u32(sys_gettid(), child_tidptr); 6734 if (flags & CLONE_PARENT_SETTID) 6735 put_user_u32(sys_gettid(), parent_tidptr); 6736 ts = (TaskState *)cpu->opaque; 6737 if (flags & CLONE_SETTLS) 6738 cpu_set_tls (env, newtls); 6739 if (flags & CLONE_CHILD_CLEARTID) 6740 ts->child_tidptr = child_tidptr; 6741 } else { 6742 cpu_clone_regs_parent(env, flags); 6743 fork_end(0); 6744 } 6745 } 6746 return ret; 6747 } 6748 6749 /* warning : doesn't handle linux specific flags... */ 6750 static int target_to_host_fcntl_cmd(int cmd) 6751 { 6752 int ret; 6753 6754 switch(cmd) { 6755 case TARGET_F_DUPFD: 6756 case TARGET_F_GETFD: 6757 case TARGET_F_SETFD: 6758 case TARGET_F_GETFL: 6759 case TARGET_F_SETFL: 6760 case TARGET_F_OFD_GETLK: 6761 case TARGET_F_OFD_SETLK: 6762 case TARGET_F_OFD_SETLKW: 6763 ret = cmd; 6764 break; 6765 case TARGET_F_GETLK: 6766 ret = F_GETLK64; 6767 break; 6768 case TARGET_F_SETLK: 6769 ret = F_SETLK64; 6770 break; 6771 case TARGET_F_SETLKW: 6772 ret = F_SETLKW64; 6773 break; 6774 case TARGET_F_GETOWN: 6775 ret = F_GETOWN; 6776 break; 6777 case TARGET_F_SETOWN: 6778 ret = F_SETOWN; 6779 break; 6780 case TARGET_F_GETSIG: 6781 ret = F_GETSIG; 6782 break; 6783 case TARGET_F_SETSIG: 6784 ret = F_SETSIG; 6785 break; 6786 #if TARGET_ABI_BITS == 32 6787 case TARGET_F_GETLK64: 6788 ret = F_GETLK64; 6789 break; 6790 case TARGET_F_SETLK64: 6791 ret = F_SETLK64; 6792 break; 6793 case TARGET_F_SETLKW64: 6794 ret = F_SETLKW64; 6795 break; 6796 #endif 6797 case TARGET_F_SETLEASE: 6798 ret = F_SETLEASE; 6799 break; 6800 case TARGET_F_GETLEASE: 6801 ret = F_GETLEASE; 6802 break; 6803 #ifdef F_DUPFD_CLOEXEC 6804 case TARGET_F_DUPFD_CLOEXEC: 6805 ret = F_DUPFD_CLOEXEC; 6806 break; 6807 #endif 6808 case TARGET_F_NOTIFY: 6809 ret = F_NOTIFY; 6810 break; 6811 #ifdef F_GETOWN_EX 6812 case TARGET_F_GETOWN_EX: 6813 ret = F_GETOWN_EX; 6814 break; 6815 #endif 6816 #ifdef F_SETOWN_EX 6817 case TARGET_F_SETOWN_EX: 6818 ret = F_SETOWN_EX; 6819 break; 6820 #endif 6821 #ifdef F_SETPIPE_SZ 6822 case TARGET_F_SETPIPE_SZ: 6823 ret = F_SETPIPE_SZ; 6824 break; 6825 case TARGET_F_GETPIPE_SZ: 6826 ret = F_GETPIPE_SZ; 6827 break; 6828 #endif 6829 #ifdef F_ADD_SEALS 6830 case TARGET_F_ADD_SEALS: 6831 ret = F_ADD_SEALS; 6832 break; 6833 case TARGET_F_GET_SEALS: 6834 ret = F_GET_SEALS; 6835 break; 6836 #endif 6837 default: 6838 ret = -TARGET_EINVAL; 6839 break; 6840 } 6841 6842 #if defined(__powerpc64__) 6843 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and 6844 * is not supported by kernel. The glibc fcntl call actually adjusts 6845 * them to 5, 6 and 7 before making the syscall(). Since we make the 6846 * syscall directly, adjust to what is supported by the kernel. 6847 */ 6848 if (ret >= F_GETLK64 && ret <= F_SETLKW64) { 6849 ret -= F_GETLK64 - 5; 6850 } 6851 #endif 6852 6853 return ret; 6854 } 6855 6856 #define FLOCK_TRANSTBL \ 6857 switch (type) { \ 6858 TRANSTBL_CONVERT(F_RDLCK); \ 6859 TRANSTBL_CONVERT(F_WRLCK); \ 6860 TRANSTBL_CONVERT(F_UNLCK); \ 6861 } 6862 6863 static int target_to_host_flock(int type) 6864 { 6865 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a 6866 FLOCK_TRANSTBL 6867 #undef TRANSTBL_CONVERT 6868 return -TARGET_EINVAL; 6869 } 6870 6871 static int host_to_target_flock(int type) 6872 { 6873 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a 6874 FLOCK_TRANSTBL 6875 #undef TRANSTBL_CONVERT 6876 /* if we don't know how to convert the value coming 6877 * from the host we copy to the target field as-is 6878 */ 6879 return type; 6880 } 6881 6882 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6883 abi_ulong target_flock_addr) 6884 { 6885 struct target_flock *target_fl; 6886 int l_type; 6887 6888 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6889 return -TARGET_EFAULT; 6890 } 6891 6892 __get_user(l_type, &target_fl->l_type); 6893 l_type = target_to_host_flock(l_type); 6894 if (l_type < 0) { 6895 return l_type; 6896 } 6897 fl->l_type = l_type; 6898 __get_user(fl->l_whence, &target_fl->l_whence); 6899 __get_user(fl->l_start, &target_fl->l_start); 6900 __get_user(fl->l_len, &target_fl->l_len); 6901 __get_user(fl->l_pid, &target_fl->l_pid); 6902 unlock_user_struct(target_fl, target_flock_addr, 0); 6903 return 0; 6904 } 6905 6906 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6907 const struct flock64 *fl) 6908 { 6909 struct target_flock *target_fl; 6910 short l_type; 6911 6912 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6913 return -TARGET_EFAULT; 6914 } 6915 6916 l_type = host_to_target_flock(fl->l_type); 6917 __put_user(l_type, &target_fl->l_type); 6918 __put_user(fl->l_whence, &target_fl->l_whence); 6919 __put_user(fl->l_start, &target_fl->l_start); 6920 __put_user(fl->l_len, &target_fl->l_len); 6921 __put_user(fl->l_pid, &target_fl->l_pid); 6922 unlock_user_struct(target_fl, target_flock_addr, 1); 6923 return 0; 6924 } 6925 6926 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6927 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6928 6929 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6930 struct target_oabi_flock64 { 6931 abi_short l_type; 6932 abi_short l_whence; 6933 abi_llong l_start; 6934 abi_llong l_len; 6935 abi_int l_pid; 6936 } QEMU_PACKED; 6937 6938 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl, 6939 abi_ulong target_flock_addr) 6940 { 6941 struct target_oabi_flock64 *target_fl; 6942 int l_type; 6943 6944 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6945 return -TARGET_EFAULT; 6946 } 6947 6948 __get_user(l_type, &target_fl->l_type); 6949 l_type = target_to_host_flock(l_type); 6950 if (l_type < 0) { 6951 return l_type; 6952 } 6953 fl->l_type = l_type; 6954 __get_user(fl->l_whence, &target_fl->l_whence); 6955 __get_user(fl->l_start, &target_fl->l_start); 6956 __get_user(fl->l_len, &target_fl->l_len); 6957 __get_user(fl->l_pid, &target_fl->l_pid); 6958 unlock_user_struct(target_fl, target_flock_addr, 0); 6959 return 0; 6960 } 6961 6962 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr, 6963 const struct flock64 *fl) 6964 { 6965 struct target_oabi_flock64 *target_fl; 6966 short l_type; 6967 6968 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6969 return -TARGET_EFAULT; 6970 } 6971 6972 l_type = host_to_target_flock(fl->l_type); 6973 __put_user(l_type, &target_fl->l_type); 6974 __put_user(fl->l_whence, &target_fl->l_whence); 6975 __put_user(fl->l_start, &target_fl->l_start); 6976 __put_user(fl->l_len, &target_fl->l_len); 6977 __put_user(fl->l_pid, &target_fl->l_pid); 6978 unlock_user_struct(target_fl, target_flock_addr, 1); 6979 return 0; 6980 } 6981 #endif 6982 6983 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6984 abi_ulong target_flock_addr) 6985 { 6986 struct target_flock64 *target_fl; 6987 int l_type; 6988 6989 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6990 return -TARGET_EFAULT; 6991 } 6992 6993 __get_user(l_type, &target_fl->l_type); 6994 l_type = target_to_host_flock(l_type); 6995 if (l_type < 0) { 6996 return l_type; 6997 } 6998 fl->l_type = l_type; 6999 __get_user(fl->l_whence, &target_fl->l_whence); 7000 __get_user(fl->l_start, &target_fl->l_start); 7001 __get_user(fl->l_len, &target_fl->l_len); 7002 __get_user(fl->l_pid, &target_fl->l_pid); 7003 unlock_user_struct(target_fl, target_flock_addr, 0); 7004 return 0; 7005 } 7006 7007 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 7008 const struct flock64 *fl) 7009 { 7010 struct target_flock64 *target_fl; 7011 short l_type; 7012 7013 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 7014 return -TARGET_EFAULT; 7015 } 7016 7017 l_type = host_to_target_flock(fl->l_type); 7018 __put_user(l_type, &target_fl->l_type); 7019 __put_user(fl->l_whence, &target_fl->l_whence); 7020 __put_user(fl->l_start, &target_fl->l_start); 7021 __put_user(fl->l_len, &target_fl->l_len); 7022 __put_user(fl->l_pid, &target_fl->l_pid); 7023 unlock_user_struct(target_fl, target_flock_addr, 1); 7024 return 0; 7025 } 7026 7027 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 7028 { 7029 struct flock64 fl64; 7030 #ifdef F_GETOWN_EX 7031 struct f_owner_ex fox; 7032 struct target_f_owner_ex *target_fox; 7033 #endif 7034 abi_long ret; 7035 int host_cmd = target_to_host_fcntl_cmd(cmd); 7036 7037 if (host_cmd == -TARGET_EINVAL) 7038 return host_cmd; 7039 7040 switch(cmd) { 7041 case TARGET_F_GETLK: 7042 ret = copy_from_user_flock(&fl64, arg); 7043 if (ret) { 7044 return ret; 7045 } 7046 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7047 if (ret == 0) { 7048 ret = copy_to_user_flock(arg, &fl64); 7049 } 7050 break; 7051 7052 case TARGET_F_SETLK: 7053 case TARGET_F_SETLKW: 7054 ret = copy_from_user_flock(&fl64, arg); 7055 if (ret) { 7056 return ret; 7057 } 7058 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7059 break; 7060 7061 case TARGET_F_GETLK64: 7062 case TARGET_F_OFD_GETLK: 7063 ret = copy_from_user_flock64(&fl64, arg); 7064 if (ret) { 7065 return ret; 7066 } 7067 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7068 if (ret == 0) { 7069 ret = copy_to_user_flock64(arg, &fl64); 7070 } 7071 break; 7072 case TARGET_F_SETLK64: 7073 case TARGET_F_SETLKW64: 7074 case TARGET_F_OFD_SETLK: 7075 case TARGET_F_OFD_SETLKW: 7076 ret = copy_from_user_flock64(&fl64, arg); 7077 if (ret) { 7078 return ret; 7079 } 7080 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 7081 break; 7082 7083 case TARGET_F_GETFL: 7084 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7085 if (ret >= 0) { 7086 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 7087 } 7088 break; 7089 7090 case TARGET_F_SETFL: 7091 ret = get_errno(safe_fcntl(fd, host_cmd, 7092 target_to_host_bitmask(arg, 7093 fcntl_flags_tbl))); 7094 break; 7095 7096 #ifdef F_GETOWN_EX 7097 case TARGET_F_GETOWN_EX: 7098 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7099 if (ret >= 0) { 7100 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 7101 return -TARGET_EFAULT; 7102 target_fox->type = tswap32(fox.type); 7103 target_fox->pid = tswap32(fox.pid); 7104 unlock_user_struct(target_fox, arg, 1); 7105 } 7106 break; 7107 #endif 7108 7109 #ifdef F_SETOWN_EX 7110 case TARGET_F_SETOWN_EX: 7111 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 7112 return -TARGET_EFAULT; 7113 fox.type = tswap32(target_fox->type); 7114 fox.pid = tswap32(target_fox->pid); 7115 unlock_user_struct(target_fox, arg, 0); 7116 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 7117 break; 7118 #endif 7119 7120 case TARGET_F_SETSIG: 7121 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg))); 7122 break; 7123 7124 case TARGET_F_GETSIG: 7125 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg))); 7126 break; 7127 7128 case TARGET_F_SETOWN: 7129 case TARGET_F_GETOWN: 7130 case TARGET_F_SETLEASE: 7131 case TARGET_F_GETLEASE: 7132 case TARGET_F_SETPIPE_SZ: 7133 case TARGET_F_GETPIPE_SZ: 7134 case TARGET_F_ADD_SEALS: 7135 case TARGET_F_GET_SEALS: 7136 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 7137 break; 7138 7139 default: 7140 ret = get_errno(safe_fcntl(fd, cmd, arg)); 7141 break; 7142 } 7143 return ret; 7144 } 7145 7146 #ifdef USE_UID16 7147 7148 static inline int high2lowuid(int uid) 7149 { 7150 if (uid > 65535) 7151 return 65534; 7152 else 7153 return uid; 7154 } 7155 7156 static inline int high2lowgid(int gid) 7157 { 7158 if (gid > 65535) 7159 return 65534; 7160 else 7161 return gid; 7162 } 7163 7164 static inline int low2highuid(int uid) 7165 { 7166 if ((int16_t)uid == -1) 7167 return -1; 7168 else 7169 return uid; 7170 } 7171 7172 static inline int low2highgid(int gid) 7173 { 7174 if ((int16_t)gid == -1) 7175 return -1; 7176 else 7177 return gid; 7178 } 7179 static inline int tswapid(int id) 7180 { 7181 return tswap16(id); 7182 } 7183 7184 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 7185 7186 #else /* !USE_UID16 */ 7187 static inline int high2lowuid(int uid) 7188 { 7189 return uid; 7190 } 7191 static inline int high2lowgid(int gid) 7192 { 7193 return gid; 7194 } 7195 static inline int low2highuid(int uid) 7196 { 7197 return uid; 7198 } 7199 static inline int low2highgid(int gid) 7200 { 7201 return gid; 7202 } 7203 static inline int tswapid(int id) 7204 { 7205 return tswap32(id); 7206 } 7207 7208 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 7209 7210 #endif /* USE_UID16 */ 7211 7212 /* We must do direct syscalls for setting UID/GID, because we want to 7213 * implement the Linux system call semantics of "change only for this thread", 7214 * not the libc/POSIX semantics of "change for all threads in process". 7215 * (See http://ewontfix.com/17/ for more details.) 7216 * We use the 32-bit version of the syscalls if present; if it is not 7217 * then either the host architecture supports 32-bit UIDs natively with 7218 * the standard syscall, or the 16-bit UID is the best we can do. 7219 */ 7220 #ifdef __NR_setuid32 7221 #define __NR_sys_setuid __NR_setuid32 7222 #else 7223 #define __NR_sys_setuid __NR_setuid 7224 #endif 7225 #ifdef __NR_setgid32 7226 #define __NR_sys_setgid __NR_setgid32 7227 #else 7228 #define __NR_sys_setgid __NR_setgid 7229 #endif 7230 #ifdef __NR_setresuid32 7231 #define __NR_sys_setresuid __NR_setresuid32 7232 #else 7233 #define __NR_sys_setresuid __NR_setresuid 7234 #endif 7235 #ifdef __NR_setresgid32 7236 #define __NR_sys_setresgid __NR_setresgid32 7237 #else 7238 #define __NR_sys_setresgid __NR_setresgid 7239 #endif 7240 7241 _syscall1(int, sys_setuid, uid_t, uid) 7242 _syscall1(int, sys_setgid, gid_t, gid) 7243 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 7244 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 7245 7246 void syscall_init(void) 7247 { 7248 IOCTLEntry *ie; 7249 const argtype *arg_type; 7250 int size; 7251 7252 thunk_init(STRUCT_MAX); 7253 7254 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 7255 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 7256 #include "syscall_types.h" 7257 #undef STRUCT 7258 #undef STRUCT_SPECIAL 7259 7260 /* we patch the ioctl size if necessary. We rely on the fact that 7261 no ioctl has all the bits at '1' in the size field */ 7262 ie = ioctl_entries; 7263 while (ie->target_cmd != 0) { 7264 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 7265 TARGET_IOC_SIZEMASK) { 7266 arg_type = ie->arg_type; 7267 if (arg_type[0] != TYPE_PTR) { 7268 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 7269 ie->target_cmd); 7270 exit(1); 7271 } 7272 arg_type++; 7273 size = thunk_type_size(arg_type, 0); 7274 ie->target_cmd = (ie->target_cmd & 7275 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 7276 (size << TARGET_IOC_SIZESHIFT); 7277 } 7278 7279 /* automatic consistency check if same arch */ 7280 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 7281 (defined(__x86_64__) && defined(TARGET_X86_64)) 7282 if (unlikely(ie->target_cmd != ie->host_cmd)) { 7283 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 7284 ie->name, ie->target_cmd, ie->host_cmd); 7285 } 7286 #endif 7287 ie++; 7288 } 7289 } 7290 7291 #ifdef TARGET_NR_truncate64 7292 static inline abi_long target_truncate64(CPUArchState *cpu_env, const char *arg1, 7293 abi_long arg2, 7294 abi_long arg3, 7295 abi_long arg4) 7296 { 7297 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) { 7298 arg2 = arg3; 7299 arg3 = arg4; 7300 } 7301 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 7302 } 7303 #endif 7304 7305 #ifdef TARGET_NR_ftruncate64 7306 static inline abi_long target_ftruncate64(CPUArchState *cpu_env, abi_long arg1, 7307 abi_long arg2, 7308 abi_long arg3, 7309 abi_long arg4) 7310 { 7311 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) { 7312 arg2 = arg3; 7313 arg3 = arg4; 7314 } 7315 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 7316 } 7317 #endif 7318 7319 #if defined(TARGET_NR_timer_settime) || \ 7320 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) 7321 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its, 7322 abi_ulong target_addr) 7323 { 7324 if (target_to_host_timespec(&host_its->it_interval, target_addr + 7325 offsetof(struct target_itimerspec, 7326 it_interval)) || 7327 target_to_host_timespec(&host_its->it_value, target_addr + 7328 offsetof(struct target_itimerspec, 7329 it_value))) { 7330 return -TARGET_EFAULT; 7331 } 7332 7333 return 0; 7334 } 7335 #endif 7336 7337 #if defined(TARGET_NR_timer_settime64) || \ 7338 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) 7339 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its, 7340 abi_ulong target_addr) 7341 { 7342 if (target_to_host_timespec64(&host_its->it_interval, target_addr + 7343 offsetof(struct target__kernel_itimerspec, 7344 it_interval)) || 7345 target_to_host_timespec64(&host_its->it_value, target_addr + 7346 offsetof(struct target__kernel_itimerspec, 7347 it_value))) { 7348 return -TARGET_EFAULT; 7349 } 7350 7351 return 0; 7352 } 7353 #endif 7354 7355 #if ((defined(TARGET_NR_timerfd_gettime) || \ 7356 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ 7357 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) 7358 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 7359 struct itimerspec *host_its) 7360 { 7361 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7362 it_interval), 7363 &host_its->it_interval) || 7364 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec, 7365 it_value), 7366 &host_its->it_value)) { 7367 return -TARGET_EFAULT; 7368 } 7369 return 0; 7370 } 7371 #endif 7372 7373 #if ((defined(TARGET_NR_timerfd_gettime64) || \ 7374 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \ 7375 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64) 7376 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr, 7377 struct itimerspec *host_its) 7378 { 7379 if (host_to_target_timespec64(target_addr + 7380 offsetof(struct target__kernel_itimerspec, 7381 it_interval), 7382 &host_its->it_interval) || 7383 host_to_target_timespec64(target_addr + 7384 offsetof(struct target__kernel_itimerspec, 7385 it_value), 7386 &host_its->it_value)) { 7387 return -TARGET_EFAULT; 7388 } 7389 return 0; 7390 } 7391 #endif 7392 7393 #if defined(TARGET_NR_adjtimex) || \ 7394 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) 7395 static inline abi_long target_to_host_timex(struct timex *host_tx, 7396 abi_long target_addr) 7397 { 7398 struct target_timex *target_tx; 7399 7400 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7401 return -TARGET_EFAULT; 7402 } 7403 7404 __get_user(host_tx->modes, &target_tx->modes); 7405 __get_user(host_tx->offset, &target_tx->offset); 7406 __get_user(host_tx->freq, &target_tx->freq); 7407 __get_user(host_tx->maxerror, &target_tx->maxerror); 7408 __get_user(host_tx->esterror, &target_tx->esterror); 7409 __get_user(host_tx->status, &target_tx->status); 7410 __get_user(host_tx->constant, &target_tx->constant); 7411 __get_user(host_tx->precision, &target_tx->precision); 7412 __get_user(host_tx->tolerance, &target_tx->tolerance); 7413 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7414 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7415 __get_user(host_tx->tick, &target_tx->tick); 7416 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7417 __get_user(host_tx->jitter, &target_tx->jitter); 7418 __get_user(host_tx->shift, &target_tx->shift); 7419 __get_user(host_tx->stabil, &target_tx->stabil); 7420 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7421 __get_user(host_tx->calcnt, &target_tx->calcnt); 7422 __get_user(host_tx->errcnt, &target_tx->errcnt); 7423 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7424 __get_user(host_tx->tai, &target_tx->tai); 7425 7426 unlock_user_struct(target_tx, target_addr, 0); 7427 return 0; 7428 } 7429 7430 static inline abi_long host_to_target_timex(abi_long target_addr, 7431 struct timex *host_tx) 7432 { 7433 struct target_timex *target_tx; 7434 7435 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7436 return -TARGET_EFAULT; 7437 } 7438 7439 __put_user(host_tx->modes, &target_tx->modes); 7440 __put_user(host_tx->offset, &target_tx->offset); 7441 __put_user(host_tx->freq, &target_tx->freq); 7442 __put_user(host_tx->maxerror, &target_tx->maxerror); 7443 __put_user(host_tx->esterror, &target_tx->esterror); 7444 __put_user(host_tx->status, &target_tx->status); 7445 __put_user(host_tx->constant, &target_tx->constant); 7446 __put_user(host_tx->precision, &target_tx->precision); 7447 __put_user(host_tx->tolerance, &target_tx->tolerance); 7448 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7449 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7450 __put_user(host_tx->tick, &target_tx->tick); 7451 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7452 __put_user(host_tx->jitter, &target_tx->jitter); 7453 __put_user(host_tx->shift, &target_tx->shift); 7454 __put_user(host_tx->stabil, &target_tx->stabil); 7455 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7456 __put_user(host_tx->calcnt, &target_tx->calcnt); 7457 __put_user(host_tx->errcnt, &target_tx->errcnt); 7458 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7459 __put_user(host_tx->tai, &target_tx->tai); 7460 7461 unlock_user_struct(target_tx, target_addr, 1); 7462 return 0; 7463 } 7464 #endif 7465 7466 7467 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 7468 static inline abi_long target_to_host_timex64(struct timex *host_tx, 7469 abi_long target_addr) 7470 { 7471 struct target__kernel_timex *target_tx; 7472 7473 if (copy_from_user_timeval64(&host_tx->time, target_addr + 7474 offsetof(struct target__kernel_timex, 7475 time))) { 7476 return -TARGET_EFAULT; 7477 } 7478 7479 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 7480 return -TARGET_EFAULT; 7481 } 7482 7483 __get_user(host_tx->modes, &target_tx->modes); 7484 __get_user(host_tx->offset, &target_tx->offset); 7485 __get_user(host_tx->freq, &target_tx->freq); 7486 __get_user(host_tx->maxerror, &target_tx->maxerror); 7487 __get_user(host_tx->esterror, &target_tx->esterror); 7488 __get_user(host_tx->status, &target_tx->status); 7489 __get_user(host_tx->constant, &target_tx->constant); 7490 __get_user(host_tx->precision, &target_tx->precision); 7491 __get_user(host_tx->tolerance, &target_tx->tolerance); 7492 __get_user(host_tx->tick, &target_tx->tick); 7493 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7494 __get_user(host_tx->jitter, &target_tx->jitter); 7495 __get_user(host_tx->shift, &target_tx->shift); 7496 __get_user(host_tx->stabil, &target_tx->stabil); 7497 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 7498 __get_user(host_tx->calcnt, &target_tx->calcnt); 7499 __get_user(host_tx->errcnt, &target_tx->errcnt); 7500 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 7501 __get_user(host_tx->tai, &target_tx->tai); 7502 7503 unlock_user_struct(target_tx, target_addr, 0); 7504 return 0; 7505 } 7506 7507 static inline abi_long host_to_target_timex64(abi_long target_addr, 7508 struct timex *host_tx) 7509 { 7510 struct target__kernel_timex *target_tx; 7511 7512 if (copy_to_user_timeval64(target_addr + 7513 offsetof(struct target__kernel_timex, time), 7514 &host_tx->time)) { 7515 return -TARGET_EFAULT; 7516 } 7517 7518 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 7519 return -TARGET_EFAULT; 7520 } 7521 7522 __put_user(host_tx->modes, &target_tx->modes); 7523 __put_user(host_tx->offset, &target_tx->offset); 7524 __put_user(host_tx->freq, &target_tx->freq); 7525 __put_user(host_tx->maxerror, &target_tx->maxerror); 7526 __put_user(host_tx->esterror, &target_tx->esterror); 7527 __put_user(host_tx->status, &target_tx->status); 7528 __put_user(host_tx->constant, &target_tx->constant); 7529 __put_user(host_tx->precision, &target_tx->precision); 7530 __put_user(host_tx->tolerance, &target_tx->tolerance); 7531 __put_user(host_tx->tick, &target_tx->tick); 7532 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7533 __put_user(host_tx->jitter, &target_tx->jitter); 7534 __put_user(host_tx->shift, &target_tx->shift); 7535 __put_user(host_tx->stabil, &target_tx->stabil); 7536 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7537 __put_user(host_tx->calcnt, &target_tx->calcnt); 7538 __put_user(host_tx->errcnt, &target_tx->errcnt); 7539 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7540 __put_user(host_tx->tai, &target_tx->tai); 7541 7542 unlock_user_struct(target_tx, target_addr, 1); 7543 return 0; 7544 } 7545 #endif 7546 7547 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID 7548 #define sigev_notify_thread_id _sigev_un._tid 7549 #endif 7550 7551 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7552 abi_ulong target_addr) 7553 { 7554 struct target_sigevent *target_sevp; 7555 7556 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7557 return -TARGET_EFAULT; 7558 } 7559 7560 /* This union is awkward on 64 bit systems because it has a 32 bit 7561 * integer and a pointer in it; we follow the conversion approach 7562 * used for handling sigval types in signal.c so the guest should get 7563 * the correct value back even if we did a 64 bit byteswap and it's 7564 * using the 32 bit integer. 7565 */ 7566 host_sevp->sigev_value.sival_ptr = 7567 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7568 host_sevp->sigev_signo = 7569 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7570 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7571 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid); 7572 7573 unlock_user_struct(target_sevp, target_addr, 1); 7574 return 0; 7575 } 7576 7577 #if defined(TARGET_NR_mlockall) 7578 static inline int target_to_host_mlockall_arg(int arg) 7579 { 7580 int result = 0; 7581 7582 if (arg & TARGET_MCL_CURRENT) { 7583 result |= MCL_CURRENT; 7584 } 7585 if (arg & TARGET_MCL_FUTURE) { 7586 result |= MCL_FUTURE; 7587 } 7588 #ifdef MCL_ONFAULT 7589 if (arg & TARGET_MCL_ONFAULT) { 7590 result |= MCL_ONFAULT; 7591 } 7592 #endif 7593 7594 return result; 7595 } 7596 #endif 7597 7598 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \ 7599 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \ 7600 defined(TARGET_NR_newfstatat)) 7601 static inline abi_long host_to_target_stat64(CPUArchState *cpu_env, 7602 abi_ulong target_addr, 7603 struct stat *host_st) 7604 { 7605 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7606 if (cpu_env->eabi) { 7607 struct target_eabi_stat64 *target_st; 7608 7609 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7610 return -TARGET_EFAULT; 7611 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7612 __put_user(host_st->st_dev, &target_st->st_dev); 7613 __put_user(host_st->st_ino, &target_st->st_ino); 7614 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7615 __put_user(host_st->st_ino, &target_st->__st_ino); 7616 #endif 7617 __put_user(host_st->st_mode, &target_st->st_mode); 7618 __put_user(host_st->st_nlink, &target_st->st_nlink); 7619 __put_user(host_st->st_uid, &target_st->st_uid); 7620 __put_user(host_st->st_gid, &target_st->st_gid); 7621 __put_user(host_st->st_rdev, &target_st->st_rdev); 7622 __put_user(host_st->st_size, &target_st->st_size); 7623 __put_user(host_st->st_blksize, &target_st->st_blksize); 7624 __put_user(host_st->st_blocks, &target_st->st_blocks); 7625 __put_user(host_st->st_atime, &target_st->target_st_atime); 7626 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7627 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7628 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7629 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7630 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7631 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7632 #endif 7633 unlock_user_struct(target_st, target_addr, 1); 7634 } else 7635 #endif 7636 { 7637 #if defined(TARGET_HAS_STRUCT_STAT64) 7638 struct target_stat64 *target_st; 7639 #else 7640 struct target_stat *target_st; 7641 #endif 7642 7643 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7644 return -TARGET_EFAULT; 7645 memset(target_st, 0, sizeof(*target_st)); 7646 __put_user(host_st->st_dev, &target_st->st_dev); 7647 __put_user(host_st->st_ino, &target_st->st_ino); 7648 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7649 __put_user(host_st->st_ino, &target_st->__st_ino); 7650 #endif 7651 __put_user(host_st->st_mode, &target_st->st_mode); 7652 __put_user(host_st->st_nlink, &target_st->st_nlink); 7653 __put_user(host_st->st_uid, &target_st->st_uid); 7654 __put_user(host_st->st_gid, &target_st->st_gid); 7655 __put_user(host_st->st_rdev, &target_st->st_rdev); 7656 /* XXX: better use of kernel struct */ 7657 __put_user(host_st->st_size, &target_st->st_size); 7658 __put_user(host_st->st_blksize, &target_st->st_blksize); 7659 __put_user(host_st->st_blocks, &target_st->st_blocks); 7660 __put_user(host_st->st_atime, &target_st->target_st_atime); 7661 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7662 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7663 #ifdef HAVE_STRUCT_STAT_ST_ATIM 7664 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec); 7665 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec); 7666 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec); 7667 #endif 7668 unlock_user_struct(target_st, target_addr, 1); 7669 } 7670 7671 return 0; 7672 } 7673 #endif 7674 7675 #if defined(TARGET_NR_statx) && defined(__NR_statx) 7676 static inline abi_long host_to_target_statx(struct target_statx *host_stx, 7677 abi_ulong target_addr) 7678 { 7679 struct target_statx *target_stx; 7680 7681 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) { 7682 return -TARGET_EFAULT; 7683 } 7684 memset(target_stx, 0, sizeof(*target_stx)); 7685 7686 __put_user(host_stx->stx_mask, &target_stx->stx_mask); 7687 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize); 7688 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes); 7689 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink); 7690 __put_user(host_stx->stx_uid, &target_stx->stx_uid); 7691 __put_user(host_stx->stx_gid, &target_stx->stx_gid); 7692 __put_user(host_stx->stx_mode, &target_stx->stx_mode); 7693 __put_user(host_stx->stx_ino, &target_stx->stx_ino); 7694 __put_user(host_stx->stx_size, &target_stx->stx_size); 7695 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks); 7696 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask); 7697 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec); 7698 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec); 7699 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec); 7700 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec); 7701 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec); 7702 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec); 7703 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec); 7704 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec); 7705 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major); 7706 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor); 7707 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major); 7708 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor); 7709 7710 unlock_user_struct(target_stx, target_addr, 1); 7711 7712 return 0; 7713 } 7714 #endif 7715 7716 static int do_sys_futex(int *uaddr, int op, int val, 7717 const struct timespec *timeout, int *uaddr2, 7718 int val3) 7719 { 7720 #if HOST_LONG_BITS == 64 7721 #if defined(__NR_futex) 7722 /* always a 64-bit time_t, it doesn't define _time64 version */ 7723 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7724 7725 #endif 7726 #else /* HOST_LONG_BITS == 64 */ 7727 #if defined(__NR_futex_time64) 7728 if (sizeof(timeout->tv_sec) == 8) { 7729 /* _time64 function on 32bit arch */ 7730 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3); 7731 } 7732 #endif 7733 #if defined(__NR_futex) 7734 /* old function on 32bit arch */ 7735 return sys_futex(uaddr, op, val, timeout, uaddr2, val3); 7736 #endif 7737 #endif /* HOST_LONG_BITS == 64 */ 7738 g_assert_not_reached(); 7739 } 7740 7741 static int do_safe_futex(int *uaddr, int op, int val, 7742 const struct timespec *timeout, int *uaddr2, 7743 int val3) 7744 { 7745 #if HOST_LONG_BITS == 64 7746 #if defined(__NR_futex) 7747 /* always a 64-bit time_t, it doesn't define _time64 version */ 7748 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7749 #endif 7750 #else /* HOST_LONG_BITS == 64 */ 7751 #if defined(__NR_futex_time64) 7752 if (sizeof(timeout->tv_sec) == 8) { 7753 /* _time64 function on 32bit arch */ 7754 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2, 7755 val3)); 7756 } 7757 #endif 7758 #if defined(__NR_futex) 7759 /* old function on 32bit arch */ 7760 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3)); 7761 #endif 7762 #endif /* HOST_LONG_BITS == 64 */ 7763 return -TARGET_ENOSYS; 7764 } 7765 7766 /* ??? Using host futex calls even when target atomic operations 7767 are not really atomic probably breaks things. However implementing 7768 futexes locally would make futexes shared between multiple processes 7769 tricky. However they're probably useless because guest atomic 7770 operations won't work either. */ 7771 #if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64) 7772 static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr, 7773 int op, int val, target_ulong timeout, 7774 target_ulong uaddr2, int val3) 7775 { 7776 struct timespec ts, *pts = NULL; 7777 void *haddr2 = NULL; 7778 int base_op; 7779 7780 /* We assume FUTEX_* constants are the same on both host and target. */ 7781 #ifdef FUTEX_CMD_MASK 7782 base_op = op & FUTEX_CMD_MASK; 7783 #else 7784 base_op = op; 7785 #endif 7786 switch (base_op) { 7787 case FUTEX_WAIT: 7788 case FUTEX_WAIT_BITSET: 7789 val = tswap32(val); 7790 break; 7791 case FUTEX_WAIT_REQUEUE_PI: 7792 val = tswap32(val); 7793 haddr2 = g2h(cpu, uaddr2); 7794 break; 7795 case FUTEX_LOCK_PI: 7796 case FUTEX_LOCK_PI2: 7797 break; 7798 case FUTEX_WAKE: 7799 case FUTEX_WAKE_BITSET: 7800 case FUTEX_TRYLOCK_PI: 7801 case FUTEX_UNLOCK_PI: 7802 timeout = 0; 7803 break; 7804 case FUTEX_FD: 7805 val = target_to_host_signal(val); 7806 timeout = 0; 7807 break; 7808 case FUTEX_CMP_REQUEUE: 7809 case FUTEX_CMP_REQUEUE_PI: 7810 val3 = tswap32(val3); 7811 /* fall through */ 7812 case FUTEX_REQUEUE: 7813 case FUTEX_WAKE_OP: 7814 /* 7815 * For these, the 4th argument is not TIMEOUT, but VAL2. 7816 * But the prototype of do_safe_futex takes a pointer, so 7817 * insert casts to satisfy the compiler. We do not need 7818 * to tswap VAL2 since it's not compared to guest memory. 7819 */ 7820 pts = (struct timespec *)(uintptr_t)timeout; 7821 timeout = 0; 7822 haddr2 = g2h(cpu, uaddr2); 7823 break; 7824 default: 7825 return -TARGET_ENOSYS; 7826 } 7827 if (timeout) { 7828 pts = &ts; 7829 if (time64 7830 ? target_to_host_timespec64(pts, timeout) 7831 : target_to_host_timespec(pts, timeout)) { 7832 return -TARGET_EFAULT; 7833 } 7834 } 7835 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3); 7836 } 7837 #endif 7838 7839 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7840 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7841 abi_long handle, abi_long mount_id, 7842 abi_long flags) 7843 { 7844 struct file_handle *target_fh; 7845 struct file_handle *fh; 7846 int mid = 0; 7847 abi_long ret; 7848 char *name; 7849 unsigned int size, total_size; 7850 7851 if (get_user_s32(size, handle)) { 7852 return -TARGET_EFAULT; 7853 } 7854 7855 name = lock_user_string(pathname); 7856 if (!name) { 7857 return -TARGET_EFAULT; 7858 } 7859 7860 total_size = sizeof(struct file_handle) + size; 7861 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7862 if (!target_fh) { 7863 unlock_user(name, pathname, 0); 7864 return -TARGET_EFAULT; 7865 } 7866 7867 fh = g_malloc0(total_size); 7868 fh->handle_bytes = size; 7869 7870 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7871 unlock_user(name, pathname, 0); 7872 7873 /* man name_to_handle_at(2): 7874 * Other than the use of the handle_bytes field, the caller should treat 7875 * the file_handle structure as an opaque data type 7876 */ 7877 7878 memcpy(target_fh, fh, total_size); 7879 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7880 target_fh->handle_type = tswap32(fh->handle_type); 7881 g_free(fh); 7882 unlock_user(target_fh, handle, total_size); 7883 7884 if (put_user_s32(mid, mount_id)) { 7885 return -TARGET_EFAULT; 7886 } 7887 7888 return ret; 7889 7890 } 7891 #endif 7892 7893 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7894 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7895 abi_long flags) 7896 { 7897 struct file_handle *target_fh; 7898 struct file_handle *fh; 7899 unsigned int size, total_size; 7900 abi_long ret; 7901 7902 if (get_user_s32(size, handle)) { 7903 return -TARGET_EFAULT; 7904 } 7905 7906 total_size = sizeof(struct file_handle) + size; 7907 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7908 if (!target_fh) { 7909 return -TARGET_EFAULT; 7910 } 7911 7912 fh = g_memdup(target_fh, total_size); 7913 fh->handle_bytes = size; 7914 fh->handle_type = tswap32(target_fh->handle_type); 7915 7916 ret = get_errno(open_by_handle_at(mount_fd, fh, 7917 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7918 7919 g_free(fh); 7920 7921 unlock_user(target_fh, handle, total_size); 7922 7923 return ret; 7924 } 7925 #endif 7926 7927 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7928 7929 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7930 { 7931 int host_flags; 7932 target_sigset_t *target_mask; 7933 sigset_t host_mask; 7934 abi_long ret; 7935 7936 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) { 7937 return -TARGET_EINVAL; 7938 } 7939 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7940 return -TARGET_EFAULT; 7941 } 7942 7943 target_to_host_sigset(&host_mask, target_mask); 7944 7945 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7946 7947 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7948 if (ret >= 0) { 7949 fd_trans_register(ret, &target_signalfd_trans); 7950 } 7951 7952 unlock_user_struct(target_mask, mask, 0); 7953 7954 return ret; 7955 } 7956 #endif 7957 7958 /* Map host to target signal numbers for the wait family of syscalls. 7959 Assume all other status bits are the same. */ 7960 int host_to_target_waitstatus(int status) 7961 { 7962 if (WIFSIGNALED(status)) { 7963 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7964 } 7965 if (WIFSTOPPED(status)) { 7966 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7967 | (status & 0xff); 7968 } 7969 return status; 7970 } 7971 7972 static int open_self_cmdline(CPUArchState *cpu_env, int fd) 7973 { 7974 CPUState *cpu = env_cpu(cpu_env); 7975 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7976 int i; 7977 7978 for (i = 0; i < bprm->argc; i++) { 7979 size_t len = strlen(bprm->argv[i]) + 1; 7980 7981 if (write(fd, bprm->argv[i], len) != len) { 7982 return -1; 7983 } 7984 } 7985 7986 return 0; 7987 } 7988 7989 static int open_self_maps(CPUArchState *cpu_env, int fd) 7990 { 7991 CPUState *cpu = env_cpu(cpu_env); 7992 TaskState *ts = cpu->opaque; 7993 GSList *map_info = read_self_maps(); 7994 GSList *s; 7995 int count; 7996 7997 for (s = map_info; s; s = g_slist_next(s)) { 7998 MapInfo *e = (MapInfo *) s->data; 7999 8000 if (h2g_valid(e->start)) { 8001 unsigned long min = e->start; 8002 unsigned long max = e->end; 8003 int flags = page_get_flags(h2g(min)); 8004 const char *path; 8005 8006 max = h2g_valid(max - 1) ? 8007 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; 8008 8009 if (page_check_range(h2g(min), max - min, flags) == -1) { 8010 continue; 8011 } 8012 8013 #ifdef TARGET_HPPA 8014 if (h2g(max) == ts->info->stack_limit) { 8015 #else 8016 if (h2g(min) == ts->info->stack_limit) { 8017 #endif 8018 path = "[stack]"; 8019 } else { 8020 path = e->path; 8021 } 8022 8023 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr 8024 " %c%c%c%c %08" PRIx64 " %s %"PRId64, 8025 h2g(min), h2g(max - 1) + 1, 8026 (flags & PAGE_READ) ? 'r' : '-', 8027 (flags & PAGE_WRITE_ORG) ? 'w' : '-', 8028 (flags & PAGE_EXEC) ? 'x' : '-', 8029 e->is_priv ? 'p' : 's', 8030 (uint64_t) e->offset, e->dev, e->inode); 8031 if (path) { 8032 dprintf(fd, "%*s%s\n", 73 - count, "", path); 8033 } else { 8034 dprintf(fd, "\n"); 8035 } 8036 } 8037 } 8038 8039 free_self_maps(map_info); 8040 8041 #ifdef TARGET_VSYSCALL_PAGE 8042 /* 8043 * We only support execution from the vsyscall page. 8044 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3. 8045 */ 8046 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx 8047 " --xp 00000000 00:00 0", 8048 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE); 8049 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]"); 8050 #endif 8051 8052 return 0; 8053 } 8054 8055 static int open_self_stat(CPUArchState *cpu_env, int fd) 8056 { 8057 CPUState *cpu = env_cpu(cpu_env); 8058 TaskState *ts = cpu->opaque; 8059 g_autoptr(GString) buf = g_string_new(NULL); 8060 int i; 8061 8062 for (i = 0; i < 44; i++) { 8063 if (i == 0) { 8064 /* pid */ 8065 g_string_printf(buf, FMT_pid " ", getpid()); 8066 } else if (i == 1) { 8067 /* app name */ 8068 gchar *bin = g_strrstr(ts->bprm->argv[0], "/"); 8069 bin = bin ? bin + 1 : ts->bprm->argv[0]; 8070 g_string_printf(buf, "(%.15s) ", bin); 8071 } else if (i == 3) { 8072 /* ppid */ 8073 g_string_printf(buf, FMT_pid " ", getppid()); 8074 } else if (i == 21) { 8075 /* starttime */ 8076 g_string_printf(buf, "%" PRIu64 " ", ts->start_boottime); 8077 } else if (i == 27) { 8078 /* stack bottom */ 8079 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack); 8080 } else { 8081 /* for the rest, there is MasterCard */ 8082 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' '); 8083 } 8084 8085 if (write(fd, buf->str, buf->len) != buf->len) { 8086 return -1; 8087 } 8088 } 8089 8090 return 0; 8091 } 8092 8093 static int open_self_auxv(CPUArchState *cpu_env, int fd) 8094 { 8095 CPUState *cpu = env_cpu(cpu_env); 8096 TaskState *ts = cpu->opaque; 8097 abi_ulong auxv = ts->info->saved_auxv; 8098 abi_ulong len = ts->info->auxv_len; 8099 char *ptr; 8100 8101 /* 8102 * Auxiliary vector is stored in target process stack. 8103 * read in whole auxv vector and copy it to file 8104 */ 8105 ptr = lock_user(VERIFY_READ, auxv, len, 0); 8106 if (ptr != NULL) { 8107 while (len > 0) { 8108 ssize_t r; 8109 r = write(fd, ptr, len); 8110 if (r <= 0) { 8111 break; 8112 } 8113 len -= r; 8114 ptr += r; 8115 } 8116 lseek(fd, 0, SEEK_SET); 8117 unlock_user(ptr, auxv, len); 8118 } 8119 8120 return 0; 8121 } 8122 8123 static int is_proc_myself(const char *filename, const char *entry) 8124 { 8125 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 8126 filename += strlen("/proc/"); 8127 if (!strncmp(filename, "self/", strlen("self/"))) { 8128 filename += strlen("self/"); 8129 } else if (*filename >= '1' && *filename <= '9') { 8130 char myself[80]; 8131 snprintf(myself, sizeof(myself), "%d/", getpid()); 8132 if (!strncmp(filename, myself, strlen(myself))) { 8133 filename += strlen(myself); 8134 } else { 8135 return 0; 8136 } 8137 } else { 8138 return 0; 8139 } 8140 if (!strcmp(filename, entry)) { 8141 return 1; 8142 } 8143 } 8144 return 0; 8145 } 8146 8147 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \ 8148 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) 8149 static int is_proc(const char *filename, const char *entry) 8150 { 8151 return strcmp(filename, entry) == 0; 8152 } 8153 #endif 8154 8155 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8156 static int open_net_route(CPUArchState *cpu_env, int fd) 8157 { 8158 FILE *fp; 8159 char *line = NULL; 8160 size_t len = 0; 8161 ssize_t read; 8162 8163 fp = fopen("/proc/net/route", "r"); 8164 if (fp == NULL) { 8165 return -1; 8166 } 8167 8168 /* read header */ 8169 8170 read = getline(&line, &len, fp); 8171 dprintf(fd, "%s", line); 8172 8173 /* read routes */ 8174 8175 while ((read = getline(&line, &len, fp)) != -1) { 8176 char iface[16]; 8177 uint32_t dest, gw, mask; 8178 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 8179 int fields; 8180 8181 fields = sscanf(line, 8182 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8183 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 8184 &mask, &mtu, &window, &irtt); 8185 if (fields != 11) { 8186 continue; 8187 } 8188 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 8189 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 8190 metric, tswap32(mask), mtu, window, irtt); 8191 } 8192 8193 free(line); 8194 fclose(fp); 8195 8196 return 0; 8197 } 8198 #endif 8199 8200 #if defined(TARGET_SPARC) 8201 static int open_cpuinfo(CPUArchState *cpu_env, int fd) 8202 { 8203 dprintf(fd, "type\t\t: sun4u\n"); 8204 return 0; 8205 } 8206 #endif 8207 8208 #if defined(TARGET_HPPA) 8209 static int open_cpuinfo(CPUArchState *cpu_env, int fd) 8210 { 8211 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n"); 8212 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n"); 8213 dprintf(fd, "capabilities\t: os32\n"); 8214 dprintf(fd, "model\t\t: 9000/778/B160L\n"); 8215 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n"); 8216 return 0; 8217 } 8218 #endif 8219 8220 #if defined(TARGET_M68K) 8221 static int open_hardware(CPUArchState *cpu_env, int fd) 8222 { 8223 dprintf(fd, "Model:\t\tqemu-m68k\n"); 8224 return 0; 8225 } 8226 #endif 8227 8228 static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 8229 { 8230 struct fake_open { 8231 const char *filename; 8232 int (*fill)(CPUArchState *cpu_env, int fd); 8233 int (*cmp)(const char *s1, const char *s2); 8234 }; 8235 const struct fake_open *fake_open; 8236 static const struct fake_open fakes[] = { 8237 { "maps", open_self_maps, is_proc_myself }, 8238 { "stat", open_self_stat, is_proc_myself }, 8239 { "auxv", open_self_auxv, is_proc_myself }, 8240 { "cmdline", open_self_cmdline, is_proc_myself }, 8241 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN 8242 { "/proc/net/route", open_net_route, is_proc }, 8243 #endif 8244 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) 8245 { "/proc/cpuinfo", open_cpuinfo, is_proc }, 8246 #endif 8247 #if defined(TARGET_M68K) 8248 { "/proc/hardware", open_hardware, is_proc }, 8249 #endif 8250 { NULL, NULL, NULL } 8251 }; 8252 8253 if (is_proc_myself(pathname, "exe")) { 8254 int execfd = qemu_getauxval(AT_EXECFD); 8255 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 8256 } 8257 8258 for (fake_open = fakes; fake_open->filename; fake_open++) { 8259 if (fake_open->cmp(pathname, fake_open->filename)) { 8260 break; 8261 } 8262 } 8263 8264 if (fake_open->filename) { 8265 const char *tmpdir; 8266 char filename[PATH_MAX]; 8267 int fd, r; 8268 8269 fd = memfd_create("qemu-open", 0); 8270 if (fd < 0) { 8271 if (errno != ENOSYS) { 8272 return fd; 8273 } 8274 /* create temporary file to map stat to */ 8275 tmpdir = getenv("TMPDIR"); 8276 if (!tmpdir) 8277 tmpdir = "/tmp"; 8278 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 8279 fd = mkstemp(filename); 8280 if (fd < 0) { 8281 return fd; 8282 } 8283 unlink(filename); 8284 } 8285 8286 if ((r = fake_open->fill(cpu_env, fd))) { 8287 int e = errno; 8288 close(fd); 8289 errno = e; 8290 return r; 8291 } 8292 lseek(fd, 0, SEEK_SET); 8293 8294 return fd; 8295 } 8296 8297 return safe_openat(dirfd, path(pathname), flags, mode); 8298 } 8299 8300 #define TIMER_MAGIC 0x0caf0000 8301 #define TIMER_MAGIC_MASK 0xffff0000 8302 8303 /* Convert QEMU provided timer ID back to internal 16bit index format */ 8304 static target_timer_t get_timer_id(abi_long arg) 8305 { 8306 target_timer_t timerid = arg; 8307 8308 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 8309 return -TARGET_EINVAL; 8310 } 8311 8312 timerid &= 0xffff; 8313 8314 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 8315 return -TARGET_EINVAL; 8316 } 8317 8318 return timerid; 8319 } 8320 8321 static int target_to_host_cpu_mask(unsigned long *host_mask, 8322 size_t host_size, 8323 abi_ulong target_addr, 8324 size_t target_size) 8325 { 8326 unsigned target_bits = sizeof(abi_ulong) * 8; 8327 unsigned host_bits = sizeof(*host_mask) * 8; 8328 abi_ulong *target_mask; 8329 unsigned i, j; 8330 8331 assert(host_size >= target_size); 8332 8333 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1); 8334 if (!target_mask) { 8335 return -TARGET_EFAULT; 8336 } 8337 memset(host_mask, 0, host_size); 8338 8339 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8340 unsigned bit = i * target_bits; 8341 abi_ulong val; 8342 8343 __get_user(val, &target_mask[i]); 8344 for (j = 0; j < target_bits; j++, bit++) { 8345 if (val & (1UL << j)) { 8346 host_mask[bit / host_bits] |= 1UL << (bit % host_bits); 8347 } 8348 } 8349 } 8350 8351 unlock_user(target_mask, target_addr, 0); 8352 return 0; 8353 } 8354 8355 static int host_to_target_cpu_mask(const unsigned long *host_mask, 8356 size_t host_size, 8357 abi_ulong target_addr, 8358 size_t target_size) 8359 { 8360 unsigned target_bits = sizeof(abi_ulong) * 8; 8361 unsigned host_bits = sizeof(*host_mask) * 8; 8362 abi_ulong *target_mask; 8363 unsigned i, j; 8364 8365 assert(host_size >= target_size); 8366 8367 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0); 8368 if (!target_mask) { 8369 return -TARGET_EFAULT; 8370 } 8371 8372 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) { 8373 unsigned bit = i * target_bits; 8374 abi_ulong val = 0; 8375 8376 for (j = 0; j < target_bits; j++, bit++) { 8377 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) { 8378 val |= 1UL << j; 8379 } 8380 } 8381 __put_user(val, &target_mask[i]); 8382 } 8383 8384 unlock_user(target_mask, target_addr, target_size); 8385 return 0; 8386 } 8387 8388 #ifdef TARGET_NR_getdents 8389 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count) 8390 { 8391 g_autofree void *hdirp = NULL; 8392 void *tdirp; 8393 int hlen, hoff, toff; 8394 int hreclen, treclen; 8395 off64_t prev_diroff = 0; 8396 8397 hdirp = g_try_malloc(count); 8398 if (!hdirp) { 8399 return -TARGET_ENOMEM; 8400 } 8401 8402 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8403 hlen = sys_getdents(dirfd, hdirp, count); 8404 #else 8405 hlen = sys_getdents64(dirfd, hdirp, count); 8406 #endif 8407 8408 hlen = get_errno(hlen); 8409 if (is_error(hlen)) { 8410 return hlen; 8411 } 8412 8413 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8414 if (!tdirp) { 8415 return -TARGET_EFAULT; 8416 } 8417 8418 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8419 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8420 struct linux_dirent *hde = hdirp + hoff; 8421 #else 8422 struct linux_dirent64 *hde = hdirp + hoff; 8423 #endif 8424 struct target_dirent *tde = tdirp + toff; 8425 int namelen; 8426 uint8_t type; 8427 8428 namelen = strlen(hde->d_name); 8429 hreclen = hde->d_reclen; 8430 treclen = offsetof(struct target_dirent, d_name) + namelen + 2; 8431 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent)); 8432 8433 if (toff + treclen > count) { 8434 /* 8435 * If the host struct is smaller than the target struct, or 8436 * requires less alignment and thus packs into less space, 8437 * then the host can return more entries than we can pass 8438 * on to the guest. 8439 */ 8440 if (toff == 0) { 8441 toff = -TARGET_EINVAL; /* result buffer is too small */ 8442 break; 8443 } 8444 /* 8445 * Return what we have, resetting the file pointer to the 8446 * location of the first record not returned. 8447 */ 8448 lseek64(dirfd, prev_diroff, SEEK_SET); 8449 break; 8450 } 8451 8452 prev_diroff = hde->d_off; 8453 tde->d_ino = tswapal(hde->d_ino); 8454 tde->d_off = tswapal(hde->d_off); 8455 tde->d_reclen = tswap16(treclen); 8456 memcpy(tde->d_name, hde->d_name, namelen + 1); 8457 8458 /* 8459 * The getdents type is in what was formerly a padding byte at the 8460 * end of the structure. 8461 */ 8462 #ifdef EMULATE_GETDENTS_WITH_GETDENTS 8463 type = *((uint8_t *)hde + hreclen - 1); 8464 #else 8465 type = hde->d_type; 8466 #endif 8467 *((uint8_t *)tde + treclen - 1) = type; 8468 } 8469 8470 unlock_user(tdirp, arg2, toff); 8471 return toff; 8472 } 8473 #endif /* TARGET_NR_getdents */ 8474 8475 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 8476 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count) 8477 { 8478 g_autofree void *hdirp = NULL; 8479 void *tdirp; 8480 int hlen, hoff, toff; 8481 int hreclen, treclen; 8482 off64_t prev_diroff = 0; 8483 8484 hdirp = g_try_malloc(count); 8485 if (!hdirp) { 8486 return -TARGET_ENOMEM; 8487 } 8488 8489 hlen = get_errno(sys_getdents64(dirfd, hdirp, count)); 8490 if (is_error(hlen)) { 8491 return hlen; 8492 } 8493 8494 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0); 8495 if (!tdirp) { 8496 return -TARGET_EFAULT; 8497 } 8498 8499 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) { 8500 struct linux_dirent64 *hde = hdirp + hoff; 8501 struct target_dirent64 *tde = tdirp + toff; 8502 int namelen; 8503 8504 namelen = strlen(hde->d_name) + 1; 8505 hreclen = hde->d_reclen; 8506 treclen = offsetof(struct target_dirent64, d_name) + namelen; 8507 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64)); 8508 8509 if (toff + treclen > count) { 8510 /* 8511 * If the host struct is smaller than the target struct, or 8512 * requires less alignment and thus packs into less space, 8513 * then the host can return more entries than we can pass 8514 * on to the guest. 8515 */ 8516 if (toff == 0) { 8517 toff = -TARGET_EINVAL; /* result buffer is too small */ 8518 break; 8519 } 8520 /* 8521 * Return what we have, resetting the file pointer to the 8522 * location of the first record not returned. 8523 */ 8524 lseek64(dirfd, prev_diroff, SEEK_SET); 8525 break; 8526 } 8527 8528 prev_diroff = hde->d_off; 8529 tde->d_ino = tswap64(hde->d_ino); 8530 tde->d_off = tswap64(hde->d_off); 8531 tde->d_reclen = tswap16(treclen); 8532 tde->d_type = hde->d_type; 8533 memcpy(tde->d_name, hde->d_name, namelen); 8534 } 8535 8536 unlock_user(tdirp, arg2, toff); 8537 return toff; 8538 } 8539 #endif /* TARGET_NR_getdents64 */ 8540 8541 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root) 8542 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old) 8543 #endif 8544 8545 /* This is an internal helper for do_syscall so that it is easier 8546 * to have a single return point, so that actions, such as logging 8547 * of syscall results, can be performed. 8548 * All errnos that do_syscall() returns must be -TARGET_<errcode>. 8549 */ 8550 static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, 8551 abi_long arg2, abi_long arg3, abi_long arg4, 8552 abi_long arg5, abi_long arg6, abi_long arg7, 8553 abi_long arg8) 8554 { 8555 CPUState *cpu = env_cpu(cpu_env); 8556 abi_long ret; 8557 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \ 8558 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \ 8559 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \ 8560 || defined(TARGET_NR_statx) 8561 struct stat st; 8562 #endif 8563 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \ 8564 || defined(TARGET_NR_fstatfs) 8565 struct statfs stfs; 8566 #endif 8567 void *p; 8568 8569 switch(num) { 8570 case TARGET_NR_exit: 8571 /* In old applications this may be used to implement _exit(2). 8572 However in threaded applications it is used for thread termination, 8573 and _exit_group is used for application termination. 8574 Do thread termination if we have more then one thread. */ 8575 8576 if (block_signals()) { 8577 return -QEMU_ERESTARTSYS; 8578 } 8579 8580 pthread_mutex_lock(&clone_lock); 8581 8582 if (CPU_NEXT(first_cpu)) { 8583 TaskState *ts = cpu->opaque; 8584 8585 object_property_set_bool(OBJECT(cpu), "realized", false, NULL); 8586 object_unref(OBJECT(cpu)); 8587 /* 8588 * At this point the CPU should be unrealized and removed 8589 * from cpu lists. We can clean-up the rest of the thread 8590 * data without the lock held. 8591 */ 8592 8593 pthread_mutex_unlock(&clone_lock); 8594 8595 if (ts->child_tidptr) { 8596 put_user_u32(0, ts->child_tidptr); 8597 do_sys_futex(g2h(cpu, ts->child_tidptr), 8598 FUTEX_WAKE, INT_MAX, NULL, NULL, 0); 8599 } 8600 thread_cpu = NULL; 8601 g_free(ts); 8602 rcu_unregister_thread(); 8603 pthread_exit(NULL); 8604 } 8605 8606 pthread_mutex_unlock(&clone_lock); 8607 preexit_cleanup(cpu_env, arg1); 8608 _exit(arg1); 8609 return 0; /* avoid warning */ 8610 case TARGET_NR_read: 8611 if (arg2 == 0 && arg3 == 0) { 8612 return get_errno(safe_read(arg1, 0, 0)); 8613 } else { 8614 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 8615 return -TARGET_EFAULT; 8616 ret = get_errno(safe_read(arg1, p, arg3)); 8617 if (ret >= 0 && 8618 fd_trans_host_to_target_data(arg1)) { 8619 ret = fd_trans_host_to_target_data(arg1)(p, ret); 8620 } 8621 unlock_user(p, arg2, ret); 8622 } 8623 return ret; 8624 case TARGET_NR_write: 8625 if (arg2 == 0 && arg3 == 0) { 8626 return get_errno(safe_write(arg1, 0, 0)); 8627 } 8628 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 8629 return -TARGET_EFAULT; 8630 if (fd_trans_target_to_host_data(arg1)) { 8631 void *copy = g_malloc(arg3); 8632 memcpy(copy, p, arg3); 8633 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 8634 if (ret >= 0) { 8635 ret = get_errno(safe_write(arg1, copy, ret)); 8636 } 8637 g_free(copy); 8638 } else { 8639 ret = get_errno(safe_write(arg1, p, arg3)); 8640 } 8641 unlock_user(p, arg2, 0); 8642 return ret; 8643 8644 #ifdef TARGET_NR_open 8645 case TARGET_NR_open: 8646 if (!(p = lock_user_string(arg1))) 8647 return -TARGET_EFAULT; 8648 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 8649 target_to_host_bitmask(arg2, fcntl_flags_tbl), 8650 arg3)); 8651 fd_trans_unregister(ret); 8652 unlock_user(p, arg1, 0); 8653 return ret; 8654 #endif 8655 case TARGET_NR_openat: 8656 if (!(p = lock_user_string(arg2))) 8657 return -TARGET_EFAULT; 8658 ret = get_errno(do_openat(cpu_env, arg1, p, 8659 target_to_host_bitmask(arg3, fcntl_flags_tbl), 8660 arg4)); 8661 fd_trans_unregister(ret); 8662 unlock_user(p, arg2, 0); 8663 return ret; 8664 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8665 case TARGET_NR_name_to_handle_at: 8666 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 8667 return ret; 8668 #endif 8669 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 8670 case TARGET_NR_open_by_handle_at: 8671 ret = do_open_by_handle_at(arg1, arg2, arg3); 8672 fd_trans_unregister(ret); 8673 return ret; 8674 #endif 8675 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) 8676 case TARGET_NR_pidfd_open: 8677 return get_errno(pidfd_open(arg1, arg2)); 8678 #endif 8679 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) 8680 case TARGET_NR_pidfd_send_signal: 8681 { 8682 siginfo_t uinfo, *puinfo; 8683 8684 if (arg3) { 8685 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 8686 if (!p) { 8687 return -TARGET_EFAULT; 8688 } 8689 target_to_host_siginfo(&uinfo, p); 8690 unlock_user(p, arg3, 0); 8691 puinfo = &uinfo; 8692 } else { 8693 puinfo = NULL; 8694 } 8695 ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2), 8696 puinfo, arg4)); 8697 } 8698 return ret; 8699 #endif 8700 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) 8701 case TARGET_NR_pidfd_getfd: 8702 return get_errno(pidfd_getfd(arg1, arg2, arg3)); 8703 #endif 8704 case TARGET_NR_close: 8705 fd_trans_unregister(arg1); 8706 return get_errno(close(arg1)); 8707 8708 case TARGET_NR_brk: 8709 return do_brk(arg1); 8710 #ifdef TARGET_NR_fork 8711 case TARGET_NR_fork: 8712 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 8713 #endif 8714 #ifdef TARGET_NR_waitpid 8715 case TARGET_NR_waitpid: 8716 { 8717 int status; 8718 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 8719 if (!is_error(ret) && arg2 && ret 8720 && put_user_s32(host_to_target_waitstatus(status), arg2)) 8721 return -TARGET_EFAULT; 8722 } 8723 return ret; 8724 #endif 8725 #ifdef TARGET_NR_waitid 8726 case TARGET_NR_waitid: 8727 { 8728 siginfo_t info; 8729 info.si_pid = 0; 8730 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 8731 if (!is_error(ret) && arg3 && info.si_pid != 0) { 8732 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 8733 return -TARGET_EFAULT; 8734 host_to_target_siginfo(p, &info); 8735 unlock_user(p, arg3, sizeof(target_siginfo_t)); 8736 } 8737 } 8738 return ret; 8739 #endif 8740 #ifdef TARGET_NR_creat /* not on alpha */ 8741 case TARGET_NR_creat: 8742 if (!(p = lock_user_string(arg1))) 8743 return -TARGET_EFAULT; 8744 ret = get_errno(creat(p, arg2)); 8745 fd_trans_unregister(ret); 8746 unlock_user(p, arg1, 0); 8747 return ret; 8748 #endif 8749 #ifdef TARGET_NR_link 8750 case TARGET_NR_link: 8751 { 8752 void * p2; 8753 p = lock_user_string(arg1); 8754 p2 = lock_user_string(arg2); 8755 if (!p || !p2) 8756 ret = -TARGET_EFAULT; 8757 else 8758 ret = get_errno(link(p, p2)); 8759 unlock_user(p2, arg2, 0); 8760 unlock_user(p, arg1, 0); 8761 } 8762 return ret; 8763 #endif 8764 #if defined(TARGET_NR_linkat) 8765 case TARGET_NR_linkat: 8766 { 8767 void * p2 = NULL; 8768 if (!arg2 || !arg4) 8769 return -TARGET_EFAULT; 8770 p = lock_user_string(arg2); 8771 p2 = lock_user_string(arg4); 8772 if (!p || !p2) 8773 ret = -TARGET_EFAULT; 8774 else 8775 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 8776 unlock_user(p, arg2, 0); 8777 unlock_user(p2, arg4, 0); 8778 } 8779 return ret; 8780 #endif 8781 #ifdef TARGET_NR_unlink 8782 case TARGET_NR_unlink: 8783 if (!(p = lock_user_string(arg1))) 8784 return -TARGET_EFAULT; 8785 ret = get_errno(unlink(p)); 8786 unlock_user(p, arg1, 0); 8787 return ret; 8788 #endif 8789 #if defined(TARGET_NR_unlinkat) 8790 case TARGET_NR_unlinkat: 8791 if (!(p = lock_user_string(arg2))) 8792 return -TARGET_EFAULT; 8793 ret = get_errno(unlinkat(arg1, p, arg3)); 8794 unlock_user(p, arg2, 0); 8795 return ret; 8796 #endif 8797 case TARGET_NR_execve: 8798 { 8799 char **argp, **envp; 8800 int argc, envc; 8801 abi_ulong gp; 8802 abi_ulong guest_argp; 8803 abi_ulong guest_envp; 8804 abi_ulong addr; 8805 char **q; 8806 8807 argc = 0; 8808 guest_argp = arg2; 8809 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 8810 if (get_user_ual(addr, gp)) 8811 return -TARGET_EFAULT; 8812 if (!addr) 8813 break; 8814 argc++; 8815 } 8816 envc = 0; 8817 guest_envp = arg3; 8818 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 8819 if (get_user_ual(addr, gp)) 8820 return -TARGET_EFAULT; 8821 if (!addr) 8822 break; 8823 envc++; 8824 } 8825 8826 argp = g_new0(char *, argc + 1); 8827 envp = g_new0(char *, envc + 1); 8828 8829 for (gp = guest_argp, q = argp; gp; 8830 gp += sizeof(abi_ulong), q++) { 8831 if (get_user_ual(addr, gp)) 8832 goto execve_efault; 8833 if (!addr) 8834 break; 8835 if (!(*q = lock_user_string(addr))) 8836 goto execve_efault; 8837 } 8838 *q = NULL; 8839 8840 for (gp = guest_envp, q = envp; gp; 8841 gp += sizeof(abi_ulong), q++) { 8842 if (get_user_ual(addr, gp)) 8843 goto execve_efault; 8844 if (!addr) 8845 break; 8846 if (!(*q = lock_user_string(addr))) 8847 goto execve_efault; 8848 } 8849 *q = NULL; 8850 8851 if (!(p = lock_user_string(arg1))) 8852 goto execve_efault; 8853 /* Although execve() is not an interruptible syscall it is 8854 * a special case where we must use the safe_syscall wrapper: 8855 * if we allow a signal to happen before we make the host 8856 * syscall then we will 'lose' it, because at the point of 8857 * execve the process leaves QEMU's control. So we use the 8858 * safe syscall wrapper to ensure that we either take the 8859 * signal as a guest signal, or else it does not happen 8860 * before the execve completes and makes it the other 8861 * program's problem. 8862 */ 8863 if (is_proc_myself(p, "exe")) { 8864 ret = get_errno(safe_execve(exec_path, argp, envp)); 8865 } else { 8866 ret = get_errno(safe_execve(p, argp, envp)); 8867 } 8868 unlock_user(p, arg1, 0); 8869 8870 goto execve_end; 8871 8872 execve_efault: 8873 ret = -TARGET_EFAULT; 8874 8875 execve_end: 8876 for (gp = guest_argp, q = argp; *q; 8877 gp += sizeof(abi_ulong), q++) { 8878 if (get_user_ual(addr, gp) 8879 || !addr) 8880 break; 8881 unlock_user(*q, addr, 0); 8882 } 8883 for (gp = guest_envp, q = envp; *q; 8884 gp += sizeof(abi_ulong), q++) { 8885 if (get_user_ual(addr, gp) 8886 || !addr) 8887 break; 8888 unlock_user(*q, addr, 0); 8889 } 8890 8891 g_free(argp); 8892 g_free(envp); 8893 } 8894 return ret; 8895 case TARGET_NR_chdir: 8896 if (!(p = lock_user_string(arg1))) 8897 return -TARGET_EFAULT; 8898 ret = get_errno(chdir(p)); 8899 unlock_user(p, arg1, 0); 8900 return ret; 8901 #ifdef TARGET_NR_time 8902 case TARGET_NR_time: 8903 { 8904 time_t host_time; 8905 ret = get_errno(time(&host_time)); 8906 if (!is_error(ret) 8907 && arg1 8908 && put_user_sal(host_time, arg1)) 8909 return -TARGET_EFAULT; 8910 } 8911 return ret; 8912 #endif 8913 #ifdef TARGET_NR_mknod 8914 case TARGET_NR_mknod: 8915 if (!(p = lock_user_string(arg1))) 8916 return -TARGET_EFAULT; 8917 ret = get_errno(mknod(p, arg2, arg3)); 8918 unlock_user(p, arg1, 0); 8919 return ret; 8920 #endif 8921 #if defined(TARGET_NR_mknodat) 8922 case TARGET_NR_mknodat: 8923 if (!(p = lock_user_string(arg2))) 8924 return -TARGET_EFAULT; 8925 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8926 unlock_user(p, arg2, 0); 8927 return ret; 8928 #endif 8929 #ifdef TARGET_NR_chmod 8930 case TARGET_NR_chmod: 8931 if (!(p = lock_user_string(arg1))) 8932 return -TARGET_EFAULT; 8933 ret = get_errno(chmod(p, arg2)); 8934 unlock_user(p, arg1, 0); 8935 return ret; 8936 #endif 8937 #ifdef TARGET_NR_lseek 8938 case TARGET_NR_lseek: 8939 return get_errno(lseek(arg1, arg2, arg3)); 8940 #endif 8941 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8942 /* Alpha specific */ 8943 case TARGET_NR_getxpid: 8944 cpu_env->ir[IR_A4] = getppid(); 8945 return get_errno(getpid()); 8946 #endif 8947 #ifdef TARGET_NR_getpid 8948 case TARGET_NR_getpid: 8949 return get_errno(getpid()); 8950 #endif 8951 case TARGET_NR_mount: 8952 { 8953 /* need to look at the data field */ 8954 void *p2, *p3; 8955 8956 if (arg1) { 8957 p = lock_user_string(arg1); 8958 if (!p) { 8959 return -TARGET_EFAULT; 8960 } 8961 } else { 8962 p = NULL; 8963 } 8964 8965 p2 = lock_user_string(arg2); 8966 if (!p2) { 8967 if (arg1) { 8968 unlock_user(p, arg1, 0); 8969 } 8970 return -TARGET_EFAULT; 8971 } 8972 8973 if (arg3) { 8974 p3 = lock_user_string(arg3); 8975 if (!p3) { 8976 if (arg1) { 8977 unlock_user(p, arg1, 0); 8978 } 8979 unlock_user(p2, arg2, 0); 8980 return -TARGET_EFAULT; 8981 } 8982 } else { 8983 p3 = NULL; 8984 } 8985 8986 /* FIXME - arg5 should be locked, but it isn't clear how to 8987 * do that since it's not guaranteed to be a NULL-terminated 8988 * string. 8989 */ 8990 if (!arg5) { 8991 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8992 } else { 8993 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5)); 8994 } 8995 ret = get_errno(ret); 8996 8997 if (arg1) { 8998 unlock_user(p, arg1, 0); 8999 } 9000 unlock_user(p2, arg2, 0); 9001 if (arg3) { 9002 unlock_user(p3, arg3, 0); 9003 } 9004 } 9005 return ret; 9006 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount) 9007 #if defined(TARGET_NR_umount) 9008 case TARGET_NR_umount: 9009 #endif 9010 #if defined(TARGET_NR_oldumount) 9011 case TARGET_NR_oldumount: 9012 #endif 9013 if (!(p = lock_user_string(arg1))) 9014 return -TARGET_EFAULT; 9015 ret = get_errno(umount(p)); 9016 unlock_user(p, arg1, 0); 9017 return ret; 9018 #endif 9019 #ifdef TARGET_NR_stime /* not on alpha */ 9020 case TARGET_NR_stime: 9021 { 9022 struct timespec ts; 9023 ts.tv_nsec = 0; 9024 if (get_user_sal(ts.tv_sec, arg1)) { 9025 return -TARGET_EFAULT; 9026 } 9027 return get_errno(clock_settime(CLOCK_REALTIME, &ts)); 9028 } 9029 #endif 9030 #ifdef TARGET_NR_alarm /* not on alpha */ 9031 case TARGET_NR_alarm: 9032 return alarm(arg1); 9033 #endif 9034 #ifdef TARGET_NR_pause /* not on alpha */ 9035 case TARGET_NR_pause: 9036 if (!block_signals()) { 9037 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 9038 } 9039 return -TARGET_EINTR; 9040 #endif 9041 #ifdef TARGET_NR_utime 9042 case TARGET_NR_utime: 9043 { 9044 struct utimbuf tbuf, *host_tbuf; 9045 struct target_utimbuf *target_tbuf; 9046 if (arg2) { 9047 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 9048 return -TARGET_EFAULT; 9049 tbuf.actime = tswapal(target_tbuf->actime); 9050 tbuf.modtime = tswapal(target_tbuf->modtime); 9051 unlock_user_struct(target_tbuf, arg2, 0); 9052 host_tbuf = &tbuf; 9053 } else { 9054 host_tbuf = NULL; 9055 } 9056 if (!(p = lock_user_string(arg1))) 9057 return -TARGET_EFAULT; 9058 ret = get_errno(utime(p, host_tbuf)); 9059 unlock_user(p, arg1, 0); 9060 } 9061 return ret; 9062 #endif 9063 #ifdef TARGET_NR_utimes 9064 case TARGET_NR_utimes: 9065 { 9066 struct timeval *tvp, tv[2]; 9067 if (arg2) { 9068 if (copy_from_user_timeval(&tv[0], arg2) 9069 || copy_from_user_timeval(&tv[1], 9070 arg2 + sizeof(struct target_timeval))) 9071 return -TARGET_EFAULT; 9072 tvp = tv; 9073 } else { 9074 tvp = NULL; 9075 } 9076 if (!(p = lock_user_string(arg1))) 9077 return -TARGET_EFAULT; 9078 ret = get_errno(utimes(p, tvp)); 9079 unlock_user(p, arg1, 0); 9080 } 9081 return ret; 9082 #endif 9083 #if defined(TARGET_NR_futimesat) 9084 case TARGET_NR_futimesat: 9085 { 9086 struct timeval *tvp, tv[2]; 9087 if (arg3) { 9088 if (copy_from_user_timeval(&tv[0], arg3) 9089 || copy_from_user_timeval(&tv[1], 9090 arg3 + sizeof(struct target_timeval))) 9091 return -TARGET_EFAULT; 9092 tvp = tv; 9093 } else { 9094 tvp = NULL; 9095 } 9096 if (!(p = lock_user_string(arg2))) { 9097 return -TARGET_EFAULT; 9098 } 9099 ret = get_errno(futimesat(arg1, path(p), tvp)); 9100 unlock_user(p, arg2, 0); 9101 } 9102 return ret; 9103 #endif 9104 #ifdef TARGET_NR_access 9105 case TARGET_NR_access: 9106 if (!(p = lock_user_string(arg1))) { 9107 return -TARGET_EFAULT; 9108 } 9109 ret = get_errno(access(path(p), arg2)); 9110 unlock_user(p, arg1, 0); 9111 return ret; 9112 #endif 9113 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 9114 case TARGET_NR_faccessat: 9115 if (!(p = lock_user_string(arg2))) { 9116 return -TARGET_EFAULT; 9117 } 9118 ret = get_errno(faccessat(arg1, p, arg3, 0)); 9119 unlock_user(p, arg2, 0); 9120 return ret; 9121 #endif 9122 #ifdef TARGET_NR_nice /* not on alpha */ 9123 case TARGET_NR_nice: 9124 return get_errno(nice(arg1)); 9125 #endif 9126 case TARGET_NR_sync: 9127 sync(); 9128 return 0; 9129 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 9130 case TARGET_NR_syncfs: 9131 return get_errno(syncfs(arg1)); 9132 #endif 9133 case TARGET_NR_kill: 9134 return get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 9135 #ifdef TARGET_NR_rename 9136 case TARGET_NR_rename: 9137 { 9138 void *p2; 9139 p = lock_user_string(arg1); 9140 p2 = lock_user_string(arg2); 9141 if (!p || !p2) 9142 ret = -TARGET_EFAULT; 9143 else 9144 ret = get_errno(rename(p, p2)); 9145 unlock_user(p2, arg2, 0); 9146 unlock_user(p, arg1, 0); 9147 } 9148 return ret; 9149 #endif 9150 #if defined(TARGET_NR_renameat) 9151 case TARGET_NR_renameat: 9152 { 9153 void *p2; 9154 p = lock_user_string(arg2); 9155 p2 = lock_user_string(arg4); 9156 if (!p || !p2) 9157 ret = -TARGET_EFAULT; 9158 else 9159 ret = get_errno(renameat(arg1, p, arg3, p2)); 9160 unlock_user(p2, arg4, 0); 9161 unlock_user(p, arg2, 0); 9162 } 9163 return ret; 9164 #endif 9165 #if defined(TARGET_NR_renameat2) 9166 case TARGET_NR_renameat2: 9167 { 9168 void *p2; 9169 p = lock_user_string(arg2); 9170 p2 = lock_user_string(arg4); 9171 if (!p || !p2) { 9172 ret = -TARGET_EFAULT; 9173 } else { 9174 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); 9175 } 9176 unlock_user(p2, arg4, 0); 9177 unlock_user(p, arg2, 0); 9178 } 9179 return ret; 9180 #endif 9181 #ifdef TARGET_NR_mkdir 9182 case TARGET_NR_mkdir: 9183 if (!(p = lock_user_string(arg1))) 9184 return -TARGET_EFAULT; 9185 ret = get_errno(mkdir(p, arg2)); 9186 unlock_user(p, arg1, 0); 9187 return ret; 9188 #endif 9189 #if defined(TARGET_NR_mkdirat) 9190 case TARGET_NR_mkdirat: 9191 if (!(p = lock_user_string(arg2))) 9192 return -TARGET_EFAULT; 9193 ret = get_errno(mkdirat(arg1, p, arg3)); 9194 unlock_user(p, arg2, 0); 9195 return ret; 9196 #endif 9197 #ifdef TARGET_NR_rmdir 9198 case TARGET_NR_rmdir: 9199 if (!(p = lock_user_string(arg1))) 9200 return -TARGET_EFAULT; 9201 ret = get_errno(rmdir(p)); 9202 unlock_user(p, arg1, 0); 9203 return ret; 9204 #endif 9205 case TARGET_NR_dup: 9206 ret = get_errno(dup(arg1)); 9207 if (ret >= 0) { 9208 fd_trans_dup(arg1, ret); 9209 } 9210 return ret; 9211 #ifdef TARGET_NR_pipe 9212 case TARGET_NR_pipe: 9213 return do_pipe(cpu_env, arg1, 0, 0); 9214 #endif 9215 #ifdef TARGET_NR_pipe2 9216 case TARGET_NR_pipe2: 9217 return do_pipe(cpu_env, arg1, 9218 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 9219 #endif 9220 case TARGET_NR_times: 9221 { 9222 struct target_tms *tmsp; 9223 struct tms tms; 9224 ret = get_errno(times(&tms)); 9225 if (arg1) { 9226 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 9227 if (!tmsp) 9228 return -TARGET_EFAULT; 9229 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 9230 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 9231 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 9232 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 9233 } 9234 if (!is_error(ret)) 9235 ret = host_to_target_clock_t(ret); 9236 } 9237 return ret; 9238 case TARGET_NR_acct: 9239 if (arg1 == 0) { 9240 ret = get_errno(acct(NULL)); 9241 } else { 9242 if (!(p = lock_user_string(arg1))) { 9243 return -TARGET_EFAULT; 9244 } 9245 ret = get_errno(acct(path(p))); 9246 unlock_user(p, arg1, 0); 9247 } 9248 return ret; 9249 #ifdef TARGET_NR_umount2 9250 case TARGET_NR_umount2: 9251 if (!(p = lock_user_string(arg1))) 9252 return -TARGET_EFAULT; 9253 ret = get_errno(umount2(p, arg2)); 9254 unlock_user(p, arg1, 0); 9255 return ret; 9256 #endif 9257 case TARGET_NR_ioctl: 9258 return do_ioctl(arg1, arg2, arg3); 9259 #ifdef TARGET_NR_fcntl 9260 case TARGET_NR_fcntl: 9261 return do_fcntl(arg1, arg2, arg3); 9262 #endif 9263 case TARGET_NR_setpgid: 9264 return get_errno(setpgid(arg1, arg2)); 9265 case TARGET_NR_umask: 9266 return get_errno(umask(arg1)); 9267 case TARGET_NR_chroot: 9268 if (!(p = lock_user_string(arg1))) 9269 return -TARGET_EFAULT; 9270 ret = get_errno(chroot(p)); 9271 unlock_user(p, arg1, 0); 9272 return ret; 9273 #ifdef TARGET_NR_dup2 9274 case TARGET_NR_dup2: 9275 ret = get_errno(dup2(arg1, arg2)); 9276 if (ret >= 0) { 9277 fd_trans_dup(arg1, arg2); 9278 } 9279 return ret; 9280 #endif 9281 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 9282 case TARGET_NR_dup3: 9283 { 9284 int host_flags; 9285 9286 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { 9287 return -EINVAL; 9288 } 9289 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl); 9290 ret = get_errno(dup3(arg1, arg2, host_flags)); 9291 if (ret >= 0) { 9292 fd_trans_dup(arg1, arg2); 9293 } 9294 return ret; 9295 } 9296 #endif 9297 #ifdef TARGET_NR_getppid /* not on alpha */ 9298 case TARGET_NR_getppid: 9299 return get_errno(getppid()); 9300 #endif 9301 #ifdef TARGET_NR_getpgrp 9302 case TARGET_NR_getpgrp: 9303 return get_errno(getpgrp()); 9304 #endif 9305 case TARGET_NR_setsid: 9306 return get_errno(setsid()); 9307 #ifdef TARGET_NR_sigaction 9308 case TARGET_NR_sigaction: 9309 { 9310 #if defined(TARGET_MIPS) 9311 struct target_sigaction act, oact, *pact, *old_act; 9312 9313 if (arg2) { 9314 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9315 return -TARGET_EFAULT; 9316 act._sa_handler = old_act->_sa_handler; 9317 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 9318 act.sa_flags = old_act->sa_flags; 9319 unlock_user_struct(old_act, arg2, 0); 9320 pact = &act; 9321 } else { 9322 pact = NULL; 9323 } 9324 9325 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9326 9327 if (!is_error(ret) && arg3) { 9328 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9329 return -TARGET_EFAULT; 9330 old_act->_sa_handler = oact._sa_handler; 9331 old_act->sa_flags = oact.sa_flags; 9332 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 9333 old_act->sa_mask.sig[1] = 0; 9334 old_act->sa_mask.sig[2] = 0; 9335 old_act->sa_mask.sig[3] = 0; 9336 unlock_user_struct(old_act, arg3, 1); 9337 } 9338 #else 9339 struct target_old_sigaction *old_act; 9340 struct target_sigaction act, oact, *pact; 9341 if (arg2) { 9342 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 9343 return -TARGET_EFAULT; 9344 act._sa_handler = old_act->_sa_handler; 9345 target_siginitset(&act.sa_mask, old_act->sa_mask); 9346 act.sa_flags = old_act->sa_flags; 9347 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9348 act.sa_restorer = old_act->sa_restorer; 9349 #endif 9350 unlock_user_struct(old_act, arg2, 0); 9351 pact = &act; 9352 } else { 9353 pact = NULL; 9354 } 9355 ret = get_errno(do_sigaction(arg1, pact, &oact, 0)); 9356 if (!is_error(ret) && arg3) { 9357 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 9358 return -TARGET_EFAULT; 9359 old_act->_sa_handler = oact._sa_handler; 9360 old_act->sa_mask = oact.sa_mask.sig[0]; 9361 old_act->sa_flags = oact.sa_flags; 9362 #ifdef TARGET_ARCH_HAS_SA_RESTORER 9363 old_act->sa_restorer = oact.sa_restorer; 9364 #endif 9365 unlock_user_struct(old_act, arg3, 1); 9366 } 9367 #endif 9368 } 9369 return ret; 9370 #endif 9371 case TARGET_NR_rt_sigaction: 9372 { 9373 /* 9374 * For Alpha and SPARC this is a 5 argument syscall, with 9375 * a 'restorer' parameter which must be copied into the 9376 * sa_restorer field of the sigaction struct. 9377 * For Alpha that 'restorer' is arg5; for SPARC it is arg4, 9378 * and arg5 is the sigsetsize. 9379 */ 9380 #if defined(TARGET_ALPHA) 9381 target_ulong sigsetsize = arg4; 9382 target_ulong restorer = arg5; 9383 #elif defined(TARGET_SPARC) 9384 target_ulong restorer = arg4; 9385 target_ulong sigsetsize = arg5; 9386 #else 9387 target_ulong sigsetsize = arg4; 9388 target_ulong restorer = 0; 9389 #endif 9390 struct target_sigaction *act = NULL; 9391 struct target_sigaction *oact = NULL; 9392 9393 if (sigsetsize != sizeof(target_sigset_t)) { 9394 return -TARGET_EINVAL; 9395 } 9396 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) { 9397 return -TARGET_EFAULT; 9398 } 9399 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 9400 ret = -TARGET_EFAULT; 9401 } else { 9402 ret = get_errno(do_sigaction(arg1, act, oact, restorer)); 9403 if (oact) { 9404 unlock_user_struct(oact, arg3, 1); 9405 } 9406 } 9407 if (act) { 9408 unlock_user_struct(act, arg2, 0); 9409 } 9410 } 9411 return ret; 9412 #ifdef TARGET_NR_sgetmask /* not on alpha */ 9413 case TARGET_NR_sgetmask: 9414 { 9415 sigset_t cur_set; 9416 abi_ulong target_set; 9417 ret = do_sigprocmask(0, NULL, &cur_set); 9418 if (!ret) { 9419 host_to_target_old_sigset(&target_set, &cur_set); 9420 ret = target_set; 9421 } 9422 } 9423 return ret; 9424 #endif 9425 #ifdef TARGET_NR_ssetmask /* not on alpha */ 9426 case TARGET_NR_ssetmask: 9427 { 9428 sigset_t set, oset; 9429 abi_ulong target_set = arg1; 9430 target_to_host_old_sigset(&set, &target_set); 9431 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 9432 if (!ret) { 9433 host_to_target_old_sigset(&target_set, &oset); 9434 ret = target_set; 9435 } 9436 } 9437 return ret; 9438 #endif 9439 #ifdef TARGET_NR_sigprocmask 9440 case TARGET_NR_sigprocmask: 9441 { 9442 #if defined(TARGET_ALPHA) 9443 sigset_t set, oldset; 9444 abi_ulong mask; 9445 int how; 9446 9447 switch (arg1) { 9448 case TARGET_SIG_BLOCK: 9449 how = SIG_BLOCK; 9450 break; 9451 case TARGET_SIG_UNBLOCK: 9452 how = SIG_UNBLOCK; 9453 break; 9454 case TARGET_SIG_SETMASK: 9455 how = SIG_SETMASK; 9456 break; 9457 default: 9458 return -TARGET_EINVAL; 9459 } 9460 mask = arg2; 9461 target_to_host_old_sigset(&set, &mask); 9462 9463 ret = do_sigprocmask(how, &set, &oldset); 9464 if (!is_error(ret)) { 9465 host_to_target_old_sigset(&mask, &oldset); 9466 ret = mask; 9467 cpu_env->ir[IR_V0] = 0; /* force no error */ 9468 } 9469 #else 9470 sigset_t set, oldset, *set_ptr; 9471 int how; 9472 9473 if (arg2) { 9474 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9475 if (!p) { 9476 return -TARGET_EFAULT; 9477 } 9478 target_to_host_old_sigset(&set, p); 9479 unlock_user(p, arg2, 0); 9480 set_ptr = &set; 9481 switch (arg1) { 9482 case TARGET_SIG_BLOCK: 9483 how = SIG_BLOCK; 9484 break; 9485 case TARGET_SIG_UNBLOCK: 9486 how = SIG_UNBLOCK; 9487 break; 9488 case TARGET_SIG_SETMASK: 9489 how = SIG_SETMASK; 9490 break; 9491 default: 9492 return -TARGET_EINVAL; 9493 } 9494 } else { 9495 how = 0; 9496 set_ptr = NULL; 9497 } 9498 ret = do_sigprocmask(how, set_ptr, &oldset); 9499 if (!is_error(ret) && arg3) { 9500 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9501 return -TARGET_EFAULT; 9502 host_to_target_old_sigset(p, &oldset); 9503 unlock_user(p, arg3, sizeof(target_sigset_t)); 9504 } 9505 #endif 9506 } 9507 return ret; 9508 #endif 9509 case TARGET_NR_rt_sigprocmask: 9510 { 9511 int how = arg1; 9512 sigset_t set, oldset, *set_ptr; 9513 9514 if (arg4 != sizeof(target_sigset_t)) { 9515 return -TARGET_EINVAL; 9516 } 9517 9518 if (arg2) { 9519 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1); 9520 if (!p) { 9521 return -TARGET_EFAULT; 9522 } 9523 target_to_host_sigset(&set, p); 9524 unlock_user(p, arg2, 0); 9525 set_ptr = &set; 9526 switch(how) { 9527 case TARGET_SIG_BLOCK: 9528 how = SIG_BLOCK; 9529 break; 9530 case TARGET_SIG_UNBLOCK: 9531 how = SIG_UNBLOCK; 9532 break; 9533 case TARGET_SIG_SETMASK: 9534 how = SIG_SETMASK; 9535 break; 9536 default: 9537 return -TARGET_EINVAL; 9538 } 9539 } else { 9540 how = 0; 9541 set_ptr = NULL; 9542 } 9543 ret = do_sigprocmask(how, set_ptr, &oldset); 9544 if (!is_error(ret) && arg3) { 9545 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 9546 return -TARGET_EFAULT; 9547 host_to_target_sigset(p, &oldset); 9548 unlock_user(p, arg3, sizeof(target_sigset_t)); 9549 } 9550 } 9551 return ret; 9552 #ifdef TARGET_NR_sigpending 9553 case TARGET_NR_sigpending: 9554 { 9555 sigset_t set; 9556 ret = get_errno(sigpending(&set)); 9557 if (!is_error(ret)) { 9558 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9559 return -TARGET_EFAULT; 9560 host_to_target_old_sigset(p, &set); 9561 unlock_user(p, arg1, sizeof(target_sigset_t)); 9562 } 9563 } 9564 return ret; 9565 #endif 9566 case TARGET_NR_rt_sigpending: 9567 { 9568 sigset_t set; 9569 9570 /* Yes, this check is >, not != like most. We follow the kernel's 9571 * logic and it does it like this because it implements 9572 * NR_sigpending through the same code path, and in that case 9573 * the old_sigset_t is smaller in size. 9574 */ 9575 if (arg2 > sizeof(target_sigset_t)) { 9576 return -TARGET_EINVAL; 9577 } 9578 9579 ret = get_errno(sigpending(&set)); 9580 if (!is_error(ret)) { 9581 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 9582 return -TARGET_EFAULT; 9583 host_to_target_sigset(p, &set); 9584 unlock_user(p, arg1, sizeof(target_sigset_t)); 9585 } 9586 } 9587 return ret; 9588 #ifdef TARGET_NR_sigsuspend 9589 case TARGET_NR_sigsuspend: 9590 { 9591 sigset_t *set; 9592 9593 #if defined(TARGET_ALPHA) 9594 TaskState *ts = cpu->opaque; 9595 /* target_to_host_old_sigset will bswap back */ 9596 abi_ulong mask = tswapal(arg1); 9597 set = &ts->sigsuspend_mask; 9598 target_to_host_old_sigset(set, &mask); 9599 #else 9600 ret = process_sigsuspend_mask(&set, arg1, sizeof(target_sigset_t)); 9601 if (ret != 0) { 9602 return ret; 9603 } 9604 #endif 9605 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 9606 finish_sigsuspend_mask(ret); 9607 } 9608 return ret; 9609 #endif 9610 case TARGET_NR_rt_sigsuspend: 9611 { 9612 sigset_t *set; 9613 9614 ret = process_sigsuspend_mask(&set, arg1, arg2); 9615 if (ret != 0) { 9616 return ret; 9617 } 9618 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE)); 9619 finish_sigsuspend_mask(ret); 9620 } 9621 return ret; 9622 #ifdef TARGET_NR_rt_sigtimedwait 9623 case TARGET_NR_rt_sigtimedwait: 9624 { 9625 sigset_t set; 9626 struct timespec uts, *puts; 9627 siginfo_t uinfo; 9628 9629 if (arg4 != sizeof(target_sigset_t)) { 9630 return -TARGET_EINVAL; 9631 } 9632 9633 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 9634 return -TARGET_EFAULT; 9635 target_to_host_sigset(&set, p); 9636 unlock_user(p, arg1, 0); 9637 if (arg3) { 9638 puts = &uts; 9639 if (target_to_host_timespec(puts, arg3)) { 9640 return -TARGET_EFAULT; 9641 } 9642 } else { 9643 puts = NULL; 9644 } 9645 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9646 SIGSET_T_SIZE)); 9647 if (!is_error(ret)) { 9648 if (arg2) { 9649 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 9650 0); 9651 if (!p) { 9652 return -TARGET_EFAULT; 9653 } 9654 host_to_target_siginfo(p, &uinfo); 9655 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9656 } 9657 ret = host_to_target_signal(ret); 9658 } 9659 } 9660 return ret; 9661 #endif 9662 #ifdef TARGET_NR_rt_sigtimedwait_time64 9663 case TARGET_NR_rt_sigtimedwait_time64: 9664 { 9665 sigset_t set; 9666 struct timespec uts, *puts; 9667 siginfo_t uinfo; 9668 9669 if (arg4 != sizeof(target_sigset_t)) { 9670 return -TARGET_EINVAL; 9671 } 9672 9673 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1); 9674 if (!p) { 9675 return -TARGET_EFAULT; 9676 } 9677 target_to_host_sigset(&set, p); 9678 unlock_user(p, arg1, 0); 9679 if (arg3) { 9680 puts = &uts; 9681 if (target_to_host_timespec64(puts, arg3)) { 9682 return -TARGET_EFAULT; 9683 } 9684 } else { 9685 puts = NULL; 9686 } 9687 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 9688 SIGSET_T_SIZE)); 9689 if (!is_error(ret)) { 9690 if (arg2) { 9691 p = lock_user(VERIFY_WRITE, arg2, 9692 sizeof(target_siginfo_t), 0); 9693 if (!p) { 9694 return -TARGET_EFAULT; 9695 } 9696 host_to_target_siginfo(p, &uinfo); 9697 unlock_user(p, arg2, sizeof(target_siginfo_t)); 9698 } 9699 ret = host_to_target_signal(ret); 9700 } 9701 } 9702 return ret; 9703 #endif 9704 case TARGET_NR_rt_sigqueueinfo: 9705 { 9706 siginfo_t uinfo; 9707 9708 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 9709 if (!p) { 9710 return -TARGET_EFAULT; 9711 } 9712 target_to_host_siginfo(&uinfo, p); 9713 unlock_user(p, arg3, 0); 9714 ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo)); 9715 } 9716 return ret; 9717 case TARGET_NR_rt_tgsigqueueinfo: 9718 { 9719 siginfo_t uinfo; 9720 9721 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 9722 if (!p) { 9723 return -TARGET_EFAULT; 9724 } 9725 target_to_host_siginfo(&uinfo, p); 9726 unlock_user(p, arg4, 0); 9727 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo)); 9728 } 9729 return ret; 9730 #ifdef TARGET_NR_sigreturn 9731 case TARGET_NR_sigreturn: 9732 if (block_signals()) { 9733 return -QEMU_ERESTARTSYS; 9734 } 9735 return do_sigreturn(cpu_env); 9736 #endif 9737 case TARGET_NR_rt_sigreturn: 9738 if (block_signals()) { 9739 return -QEMU_ERESTARTSYS; 9740 } 9741 return do_rt_sigreturn(cpu_env); 9742 case TARGET_NR_sethostname: 9743 if (!(p = lock_user_string(arg1))) 9744 return -TARGET_EFAULT; 9745 ret = get_errno(sethostname(p, arg2)); 9746 unlock_user(p, arg1, 0); 9747 return ret; 9748 #ifdef TARGET_NR_setrlimit 9749 case TARGET_NR_setrlimit: 9750 { 9751 int resource = target_to_host_resource(arg1); 9752 struct target_rlimit *target_rlim; 9753 struct rlimit rlim; 9754 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 9755 return -TARGET_EFAULT; 9756 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 9757 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 9758 unlock_user_struct(target_rlim, arg2, 0); 9759 /* 9760 * If we just passed through resource limit settings for memory then 9761 * they would also apply to QEMU's own allocations, and QEMU will 9762 * crash or hang or die if its allocations fail. Ideally we would 9763 * track the guest allocations in QEMU and apply the limits ourselves. 9764 * For now, just tell the guest the call succeeded but don't actually 9765 * limit anything. 9766 */ 9767 if (resource != RLIMIT_AS && 9768 resource != RLIMIT_DATA && 9769 resource != RLIMIT_STACK) { 9770 return get_errno(setrlimit(resource, &rlim)); 9771 } else { 9772 return 0; 9773 } 9774 } 9775 #endif 9776 #ifdef TARGET_NR_getrlimit 9777 case TARGET_NR_getrlimit: 9778 { 9779 int resource = target_to_host_resource(arg1); 9780 struct target_rlimit *target_rlim; 9781 struct rlimit rlim; 9782 9783 ret = get_errno(getrlimit(resource, &rlim)); 9784 if (!is_error(ret)) { 9785 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 9786 return -TARGET_EFAULT; 9787 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 9788 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 9789 unlock_user_struct(target_rlim, arg2, 1); 9790 } 9791 } 9792 return ret; 9793 #endif 9794 case TARGET_NR_getrusage: 9795 { 9796 struct rusage rusage; 9797 ret = get_errno(getrusage(arg1, &rusage)); 9798 if (!is_error(ret)) { 9799 ret = host_to_target_rusage(arg2, &rusage); 9800 } 9801 } 9802 return ret; 9803 #if defined(TARGET_NR_gettimeofday) 9804 case TARGET_NR_gettimeofday: 9805 { 9806 struct timeval tv; 9807 struct timezone tz; 9808 9809 ret = get_errno(gettimeofday(&tv, &tz)); 9810 if (!is_error(ret)) { 9811 if (arg1 && copy_to_user_timeval(arg1, &tv)) { 9812 return -TARGET_EFAULT; 9813 } 9814 if (arg2 && copy_to_user_timezone(arg2, &tz)) { 9815 return -TARGET_EFAULT; 9816 } 9817 } 9818 } 9819 return ret; 9820 #endif 9821 #if defined(TARGET_NR_settimeofday) 9822 case TARGET_NR_settimeofday: 9823 { 9824 struct timeval tv, *ptv = NULL; 9825 struct timezone tz, *ptz = NULL; 9826 9827 if (arg1) { 9828 if (copy_from_user_timeval(&tv, arg1)) { 9829 return -TARGET_EFAULT; 9830 } 9831 ptv = &tv; 9832 } 9833 9834 if (arg2) { 9835 if (copy_from_user_timezone(&tz, arg2)) { 9836 return -TARGET_EFAULT; 9837 } 9838 ptz = &tz; 9839 } 9840 9841 return get_errno(settimeofday(ptv, ptz)); 9842 } 9843 #endif 9844 #if defined(TARGET_NR_select) 9845 case TARGET_NR_select: 9846 #if defined(TARGET_WANT_NI_OLD_SELECT) 9847 /* some architectures used to have old_select here 9848 * but now ENOSYS it. 9849 */ 9850 ret = -TARGET_ENOSYS; 9851 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 9852 ret = do_old_select(arg1); 9853 #else 9854 ret = do_select(arg1, arg2, arg3, arg4, arg5); 9855 #endif 9856 return ret; 9857 #endif 9858 #ifdef TARGET_NR_pselect6 9859 case TARGET_NR_pselect6: 9860 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); 9861 #endif 9862 #ifdef TARGET_NR_pselect6_time64 9863 case TARGET_NR_pselect6_time64: 9864 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); 9865 #endif 9866 #ifdef TARGET_NR_symlink 9867 case TARGET_NR_symlink: 9868 { 9869 void *p2; 9870 p = lock_user_string(arg1); 9871 p2 = lock_user_string(arg2); 9872 if (!p || !p2) 9873 ret = -TARGET_EFAULT; 9874 else 9875 ret = get_errno(symlink(p, p2)); 9876 unlock_user(p2, arg2, 0); 9877 unlock_user(p, arg1, 0); 9878 } 9879 return ret; 9880 #endif 9881 #if defined(TARGET_NR_symlinkat) 9882 case TARGET_NR_symlinkat: 9883 { 9884 void *p2; 9885 p = lock_user_string(arg1); 9886 p2 = lock_user_string(arg3); 9887 if (!p || !p2) 9888 ret = -TARGET_EFAULT; 9889 else 9890 ret = get_errno(symlinkat(p, arg2, p2)); 9891 unlock_user(p2, arg3, 0); 9892 unlock_user(p, arg1, 0); 9893 } 9894 return ret; 9895 #endif 9896 #ifdef TARGET_NR_readlink 9897 case TARGET_NR_readlink: 9898 { 9899 void *p2; 9900 p = lock_user_string(arg1); 9901 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9902 if (!p || !p2) { 9903 ret = -TARGET_EFAULT; 9904 } else if (!arg3) { 9905 /* Short circuit this for the magic exe check. */ 9906 ret = -TARGET_EINVAL; 9907 } else if (is_proc_myself((const char *)p, "exe")) { 9908 char real[PATH_MAX], *temp; 9909 temp = realpath(exec_path, real); 9910 /* Return value is # of bytes that we wrote to the buffer. */ 9911 if (temp == NULL) { 9912 ret = get_errno(-1); 9913 } else { 9914 /* Don't worry about sign mismatch as earlier mapping 9915 * logic would have thrown a bad address error. */ 9916 ret = MIN(strlen(real), arg3); 9917 /* We cannot NUL terminate the string. */ 9918 memcpy(p2, real, ret); 9919 } 9920 } else { 9921 ret = get_errno(readlink(path(p), p2, arg3)); 9922 } 9923 unlock_user(p2, arg2, ret); 9924 unlock_user(p, arg1, 0); 9925 } 9926 return ret; 9927 #endif 9928 #if defined(TARGET_NR_readlinkat) 9929 case TARGET_NR_readlinkat: 9930 { 9931 void *p2; 9932 p = lock_user_string(arg2); 9933 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9934 if (!p || !p2) { 9935 ret = -TARGET_EFAULT; 9936 } else if (!arg4) { 9937 /* Short circuit this for the magic exe check. */ 9938 ret = -TARGET_EINVAL; 9939 } else if (is_proc_myself((const char *)p, "exe")) { 9940 char real[PATH_MAX], *temp; 9941 temp = realpath(exec_path, real); 9942 /* Return value is # of bytes that we wrote to the buffer. */ 9943 if (temp == NULL) { 9944 ret = get_errno(-1); 9945 } else { 9946 /* Don't worry about sign mismatch as earlier mapping 9947 * logic would have thrown a bad address error. */ 9948 ret = MIN(strlen(real), arg4); 9949 /* We cannot NUL terminate the string. */ 9950 memcpy(p2, real, ret); 9951 } 9952 } else { 9953 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9954 } 9955 unlock_user(p2, arg3, ret); 9956 unlock_user(p, arg2, 0); 9957 } 9958 return ret; 9959 #endif 9960 #ifdef TARGET_NR_swapon 9961 case TARGET_NR_swapon: 9962 if (!(p = lock_user_string(arg1))) 9963 return -TARGET_EFAULT; 9964 ret = get_errno(swapon(p, arg2)); 9965 unlock_user(p, arg1, 0); 9966 return ret; 9967 #endif 9968 case TARGET_NR_reboot: 9969 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9970 /* arg4 must be ignored in all other cases */ 9971 p = lock_user_string(arg4); 9972 if (!p) { 9973 return -TARGET_EFAULT; 9974 } 9975 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9976 unlock_user(p, arg4, 0); 9977 } else { 9978 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9979 } 9980 return ret; 9981 #ifdef TARGET_NR_mmap 9982 case TARGET_NR_mmap: 9983 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9984 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9985 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9986 || defined(TARGET_S390X) 9987 { 9988 abi_ulong *v; 9989 abi_ulong v1, v2, v3, v4, v5, v6; 9990 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9991 return -TARGET_EFAULT; 9992 v1 = tswapal(v[0]); 9993 v2 = tswapal(v[1]); 9994 v3 = tswapal(v[2]); 9995 v4 = tswapal(v[3]); 9996 v5 = tswapal(v[4]); 9997 v6 = tswapal(v[5]); 9998 unlock_user(v, arg1, 0); 9999 ret = get_errno(target_mmap(v1, v2, v3, 10000 target_to_host_bitmask(v4, mmap_flags_tbl), 10001 v5, v6)); 10002 } 10003 #else 10004 /* mmap pointers are always untagged */ 10005 ret = get_errno(target_mmap(arg1, arg2, arg3, 10006 target_to_host_bitmask(arg4, mmap_flags_tbl), 10007 arg5, 10008 arg6)); 10009 #endif 10010 return ret; 10011 #endif 10012 #ifdef TARGET_NR_mmap2 10013 case TARGET_NR_mmap2: 10014 #ifndef MMAP_SHIFT 10015 #define MMAP_SHIFT 12 10016 #endif 10017 ret = target_mmap(arg1, arg2, arg3, 10018 target_to_host_bitmask(arg4, mmap_flags_tbl), 10019 arg5, arg6 << MMAP_SHIFT); 10020 return get_errno(ret); 10021 #endif 10022 case TARGET_NR_munmap: 10023 arg1 = cpu_untagged_addr(cpu, arg1); 10024 return get_errno(target_munmap(arg1, arg2)); 10025 case TARGET_NR_mprotect: 10026 arg1 = cpu_untagged_addr(cpu, arg1); 10027 { 10028 TaskState *ts = cpu->opaque; 10029 /* Special hack to detect libc making the stack executable. */ 10030 if ((arg3 & PROT_GROWSDOWN) 10031 && arg1 >= ts->info->stack_limit 10032 && arg1 <= ts->info->start_stack) { 10033 arg3 &= ~PROT_GROWSDOWN; 10034 arg2 = arg2 + arg1 - ts->info->stack_limit; 10035 arg1 = ts->info->stack_limit; 10036 } 10037 } 10038 return get_errno(target_mprotect(arg1, arg2, arg3)); 10039 #ifdef TARGET_NR_mremap 10040 case TARGET_NR_mremap: 10041 arg1 = cpu_untagged_addr(cpu, arg1); 10042 /* mremap new_addr (arg5) is always untagged */ 10043 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 10044 #endif 10045 /* ??? msync/mlock/munlock are broken for softmmu. */ 10046 #ifdef TARGET_NR_msync 10047 case TARGET_NR_msync: 10048 return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); 10049 #endif 10050 #ifdef TARGET_NR_mlock 10051 case TARGET_NR_mlock: 10052 return get_errno(mlock(g2h(cpu, arg1), arg2)); 10053 #endif 10054 #ifdef TARGET_NR_munlock 10055 case TARGET_NR_munlock: 10056 return get_errno(munlock(g2h(cpu, arg1), arg2)); 10057 #endif 10058 #ifdef TARGET_NR_mlockall 10059 case TARGET_NR_mlockall: 10060 return get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 10061 #endif 10062 #ifdef TARGET_NR_munlockall 10063 case TARGET_NR_munlockall: 10064 return get_errno(munlockall()); 10065 #endif 10066 #ifdef TARGET_NR_truncate 10067 case TARGET_NR_truncate: 10068 if (!(p = lock_user_string(arg1))) 10069 return -TARGET_EFAULT; 10070 ret = get_errno(truncate(p, arg2)); 10071 unlock_user(p, arg1, 0); 10072 return ret; 10073 #endif 10074 #ifdef TARGET_NR_ftruncate 10075 case TARGET_NR_ftruncate: 10076 return get_errno(ftruncate(arg1, arg2)); 10077 #endif 10078 case TARGET_NR_fchmod: 10079 return get_errno(fchmod(arg1, arg2)); 10080 #if defined(TARGET_NR_fchmodat) 10081 case TARGET_NR_fchmodat: 10082 if (!(p = lock_user_string(arg2))) 10083 return -TARGET_EFAULT; 10084 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 10085 unlock_user(p, arg2, 0); 10086 return ret; 10087 #endif 10088 case TARGET_NR_getpriority: 10089 /* Note that negative values are valid for getpriority, so we must 10090 differentiate based on errno settings. */ 10091 errno = 0; 10092 ret = getpriority(arg1, arg2); 10093 if (ret == -1 && errno != 0) { 10094 return -host_to_target_errno(errno); 10095 } 10096 #ifdef TARGET_ALPHA 10097 /* Return value is the unbiased priority. Signal no error. */ 10098 cpu_env->ir[IR_V0] = 0; 10099 #else 10100 /* Return value is a biased priority to avoid negative numbers. */ 10101 ret = 20 - ret; 10102 #endif 10103 return ret; 10104 case TARGET_NR_setpriority: 10105 return get_errno(setpriority(arg1, arg2, arg3)); 10106 #ifdef TARGET_NR_statfs 10107 case TARGET_NR_statfs: 10108 if (!(p = lock_user_string(arg1))) { 10109 return -TARGET_EFAULT; 10110 } 10111 ret = get_errno(statfs(path(p), &stfs)); 10112 unlock_user(p, arg1, 0); 10113 convert_statfs: 10114 if (!is_error(ret)) { 10115 struct target_statfs *target_stfs; 10116 10117 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 10118 return -TARGET_EFAULT; 10119 __put_user(stfs.f_type, &target_stfs->f_type); 10120 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10121 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10122 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10123 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10124 __put_user(stfs.f_files, &target_stfs->f_files); 10125 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10126 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10127 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10128 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10129 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10130 #ifdef _STATFS_F_FLAGS 10131 __put_user(stfs.f_flags, &target_stfs->f_flags); 10132 #else 10133 __put_user(0, &target_stfs->f_flags); 10134 #endif 10135 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10136 unlock_user_struct(target_stfs, arg2, 1); 10137 } 10138 return ret; 10139 #endif 10140 #ifdef TARGET_NR_fstatfs 10141 case TARGET_NR_fstatfs: 10142 ret = get_errno(fstatfs(arg1, &stfs)); 10143 goto convert_statfs; 10144 #endif 10145 #ifdef TARGET_NR_statfs64 10146 case TARGET_NR_statfs64: 10147 if (!(p = lock_user_string(arg1))) { 10148 return -TARGET_EFAULT; 10149 } 10150 ret = get_errno(statfs(path(p), &stfs)); 10151 unlock_user(p, arg1, 0); 10152 convert_statfs64: 10153 if (!is_error(ret)) { 10154 struct target_statfs64 *target_stfs; 10155 10156 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 10157 return -TARGET_EFAULT; 10158 __put_user(stfs.f_type, &target_stfs->f_type); 10159 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 10160 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 10161 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 10162 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 10163 __put_user(stfs.f_files, &target_stfs->f_files); 10164 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 10165 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 10166 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 10167 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 10168 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 10169 #ifdef _STATFS_F_FLAGS 10170 __put_user(stfs.f_flags, &target_stfs->f_flags); 10171 #else 10172 __put_user(0, &target_stfs->f_flags); 10173 #endif 10174 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 10175 unlock_user_struct(target_stfs, arg3, 1); 10176 } 10177 return ret; 10178 case TARGET_NR_fstatfs64: 10179 ret = get_errno(fstatfs(arg1, &stfs)); 10180 goto convert_statfs64; 10181 #endif 10182 #ifdef TARGET_NR_socketcall 10183 case TARGET_NR_socketcall: 10184 return do_socketcall(arg1, arg2); 10185 #endif 10186 #ifdef TARGET_NR_accept 10187 case TARGET_NR_accept: 10188 return do_accept4(arg1, arg2, arg3, 0); 10189 #endif 10190 #ifdef TARGET_NR_accept4 10191 case TARGET_NR_accept4: 10192 return do_accept4(arg1, arg2, arg3, arg4); 10193 #endif 10194 #ifdef TARGET_NR_bind 10195 case TARGET_NR_bind: 10196 return do_bind(arg1, arg2, arg3); 10197 #endif 10198 #ifdef TARGET_NR_connect 10199 case TARGET_NR_connect: 10200 return do_connect(arg1, arg2, arg3); 10201 #endif 10202 #ifdef TARGET_NR_getpeername 10203 case TARGET_NR_getpeername: 10204 return do_getpeername(arg1, arg2, arg3); 10205 #endif 10206 #ifdef TARGET_NR_getsockname 10207 case TARGET_NR_getsockname: 10208 return do_getsockname(arg1, arg2, arg3); 10209 #endif 10210 #ifdef TARGET_NR_getsockopt 10211 case TARGET_NR_getsockopt: 10212 return do_getsockopt(arg1, arg2, arg3, arg4, arg5); 10213 #endif 10214 #ifdef TARGET_NR_listen 10215 case TARGET_NR_listen: 10216 return get_errno(listen(arg1, arg2)); 10217 #endif 10218 #ifdef TARGET_NR_recv 10219 case TARGET_NR_recv: 10220 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 10221 #endif 10222 #ifdef TARGET_NR_recvfrom 10223 case TARGET_NR_recvfrom: 10224 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 10225 #endif 10226 #ifdef TARGET_NR_recvmsg 10227 case TARGET_NR_recvmsg: 10228 return do_sendrecvmsg(arg1, arg2, arg3, 0); 10229 #endif 10230 #ifdef TARGET_NR_send 10231 case TARGET_NR_send: 10232 return do_sendto(arg1, arg2, arg3, arg4, 0, 0); 10233 #endif 10234 #ifdef TARGET_NR_sendmsg 10235 case TARGET_NR_sendmsg: 10236 return do_sendrecvmsg(arg1, arg2, arg3, 1); 10237 #endif 10238 #ifdef TARGET_NR_sendmmsg 10239 case TARGET_NR_sendmmsg: 10240 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 10241 #endif 10242 #ifdef TARGET_NR_recvmmsg 10243 case TARGET_NR_recvmmsg: 10244 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 10245 #endif 10246 #ifdef TARGET_NR_sendto 10247 case TARGET_NR_sendto: 10248 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 10249 #endif 10250 #ifdef TARGET_NR_shutdown 10251 case TARGET_NR_shutdown: 10252 return get_errno(shutdown(arg1, arg2)); 10253 #endif 10254 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 10255 case TARGET_NR_getrandom: 10256 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 10257 if (!p) { 10258 return -TARGET_EFAULT; 10259 } 10260 ret = get_errno(getrandom(p, arg2, arg3)); 10261 unlock_user(p, arg1, ret); 10262 return ret; 10263 #endif 10264 #ifdef TARGET_NR_socket 10265 case TARGET_NR_socket: 10266 return do_socket(arg1, arg2, arg3); 10267 #endif 10268 #ifdef TARGET_NR_socketpair 10269 case TARGET_NR_socketpair: 10270 return do_socketpair(arg1, arg2, arg3, arg4); 10271 #endif 10272 #ifdef TARGET_NR_setsockopt 10273 case TARGET_NR_setsockopt: 10274 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 10275 #endif 10276 #if defined(TARGET_NR_syslog) 10277 case TARGET_NR_syslog: 10278 { 10279 int len = arg2; 10280 10281 switch (arg1) { 10282 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 10283 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 10284 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 10285 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 10286 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 10287 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 10288 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 10289 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 10290 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 10291 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 10292 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 10293 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 10294 { 10295 if (len < 0) { 10296 return -TARGET_EINVAL; 10297 } 10298 if (len == 0) { 10299 return 0; 10300 } 10301 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10302 if (!p) { 10303 return -TARGET_EFAULT; 10304 } 10305 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 10306 unlock_user(p, arg2, arg3); 10307 } 10308 return ret; 10309 default: 10310 return -TARGET_EINVAL; 10311 } 10312 } 10313 break; 10314 #endif 10315 case TARGET_NR_setitimer: 10316 { 10317 struct itimerval value, ovalue, *pvalue; 10318 10319 if (arg2) { 10320 pvalue = &value; 10321 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 10322 || copy_from_user_timeval(&pvalue->it_value, 10323 arg2 + sizeof(struct target_timeval))) 10324 return -TARGET_EFAULT; 10325 } else { 10326 pvalue = NULL; 10327 } 10328 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 10329 if (!is_error(ret) && arg3) { 10330 if (copy_to_user_timeval(arg3, 10331 &ovalue.it_interval) 10332 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 10333 &ovalue.it_value)) 10334 return -TARGET_EFAULT; 10335 } 10336 } 10337 return ret; 10338 case TARGET_NR_getitimer: 10339 { 10340 struct itimerval value; 10341 10342 ret = get_errno(getitimer(arg1, &value)); 10343 if (!is_error(ret) && arg2) { 10344 if (copy_to_user_timeval(arg2, 10345 &value.it_interval) 10346 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 10347 &value.it_value)) 10348 return -TARGET_EFAULT; 10349 } 10350 } 10351 return ret; 10352 #ifdef TARGET_NR_stat 10353 case TARGET_NR_stat: 10354 if (!(p = lock_user_string(arg1))) { 10355 return -TARGET_EFAULT; 10356 } 10357 ret = get_errno(stat(path(p), &st)); 10358 unlock_user(p, arg1, 0); 10359 goto do_stat; 10360 #endif 10361 #ifdef TARGET_NR_lstat 10362 case TARGET_NR_lstat: 10363 if (!(p = lock_user_string(arg1))) { 10364 return -TARGET_EFAULT; 10365 } 10366 ret = get_errno(lstat(path(p), &st)); 10367 unlock_user(p, arg1, 0); 10368 goto do_stat; 10369 #endif 10370 #ifdef TARGET_NR_fstat 10371 case TARGET_NR_fstat: 10372 { 10373 ret = get_errno(fstat(arg1, &st)); 10374 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 10375 do_stat: 10376 #endif 10377 if (!is_error(ret)) { 10378 struct target_stat *target_st; 10379 10380 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 10381 return -TARGET_EFAULT; 10382 memset(target_st, 0, sizeof(*target_st)); 10383 __put_user(st.st_dev, &target_st->st_dev); 10384 __put_user(st.st_ino, &target_st->st_ino); 10385 __put_user(st.st_mode, &target_st->st_mode); 10386 __put_user(st.st_uid, &target_st->st_uid); 10387 __put_user(st.st_gid, &target_st->st_gid); 10388 __put_user(st.st_nlink, &target_st->st_nlink); 10389 __put_user(st.st_rdev, &target_st->st_rdev); 10390 __put_user(st.st_size, &target_st->st_size); 10391 __put_user(st.st_blksize, &target_st->st_blksize); 10392 __put_user(st.st_blocks, &target_st->st_blocks); 10393 __put_user(st.st_atime, &target_st->target_st_atime); 10394 __put_user(st.st_mtime, &target_st->target_st_mtime); 10395 __put_user(st.st_ctime, &target_st->target_st_ctime); 10396 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC) 10397 __put_user(st.st_atim.tv_nsec, 10398 &target_st->target_st_atime_nsec); 10399 __put_user(st.st_mtim.tv_nsec, 10400 &target_st->target_st_mtime_nsec); 10401 __put_user(st.st_ctim.tv_nsec, 10402 &target_st->target_st_ctime_nsec); 10403 #endif 10404 unlock_user_struct(target_st, arg2, 1); 10405 } 10406 } 10407 return ret; 10408 #endif 10409 case TARGET_NR_vhangup: 10410 return get_errno(vhangup()); 10411 #ifdef TARGET_NR_syscall 10412 case TARGET_NR_syscall: 10413 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 10414 arg6, arg7, arg8, 0); 10415 #endif 10416 #if defined(TARGET_NR_wait4) 10417 case TARGET_NR_wait4: 10418 { 10419 int status; 10420 abi_long status_ptr = arg2; 10421 struct rusage rusage, *rusage_ptr; 10422 abi_ulong target_rusage = arg4; 10423 abi_long rusage_err; 10424 if (target_rusage) 10425 rusage_ptr = &rusage; 10426 else 10427 rusage_ptr = NULL; 10428 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 10429 if (!is_error(ret)) { 10430 if (status_ptr && ret) { 10431 status = host_to_target_waitstatus(status); 10432 if (put_user_s32(status, status_ptr)) 10433 return -TARGET_EFAULT; 10434 } 10435 if (target_rusage) { 10436 rusage_err = host_to_target_rusage(target_rusage, &rusage); 10437 if (rusage_err) { 10438 ret = rusage_err; 10439 } 10440 } 10441 } 10442 } 10443 return ret; 10444 #endif 10445 #ifdef TARGET_NR_swapoff 10446 case TARGET_NR_swapoff: 10447 if (!(p = lock_user_string(arg1))) 10448 return -TARGET_EFAULT; 10449 ret = get_errno(swapoff(p)); 10450 unlock_user(p, arg1, 0); 10451 return ret; 10452 #endif 10453 case TARGET_NR_sysinfo: 10454 { 10455 struct target_sysinfo *target_value; 10456 struct sysinfo value; 10457 ret = get_errno(sysinfo(&value)); 10458 if (!is_error(ret) && arg1) 10459 { 10460 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 10461 return -TARGET_EFAULT; 10462 __put_user(value.uptime, &target_value->uptime); 10463 __put_user(value.loads[0], &target_value->loads[0]); 10464 __put_user(value.loads[1], &target_value->loads[1]); 10465 __put_user(value.loads[2], &target_value->loads[2]); 10466 __put_user(value.totalram, &target_value->totalram); 10467 __put_user(value.freeram, &target_value->freeram); 10468 __put_user(value.sharedram, &target_value->sharedram); 10469 __put_user(value.bufferram, &target_value->bufferram); 10470 __put_user(value.totalswap, &target_value->totalswap); 10471 __put_user(value.freeswap, &target_value->freeswap); 10472 __put_user(value.procs, &target_value->procs); 10473 __put_user(value.totalhigh, &target_value->totalhigh); 10474 __put_user(value.freehigh, &target_value->freehigh); 10475 __put_user(value.mem_unit, &target_value->mem_unit); 10476 unlock_user_struct(target_value, arg1, 1); 10477 } 10478 } 10479 return ret; 10480 #ifdef TARGET_NR_ipc 10481 case TARGET_NR_ipc: 10482 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 10483 #endif 10484 #ifdef TARGET_NR_semget 10485 case TARGET_NR_semget: 10486 return get_errno(semget(arg1, arg2, arg3)); 10487 #endif 10488 #ifdef TARGET_NR_semop 10489 case TARGET_NR_semop: 10490 return do_semtimedop(arg1, arg2, arg3, 0, false); 10491 #endif 10492 #ifdef TARGET_NR_semtimedop 10493 case TARGET_NR_semtimedop: 10494 return do_semtimedop(arg1, arg2, arg3, arg4, false); 10495 #endif 10496 #ifdef TARGET_NR_semtimedop_time64 10497 case TARGET_NR_semtimedop_time64: 10498 return do_semtimedop(arg1, arg2, arg3, arg4, true); 10499 #endif 10500 #ifdef TARGET_NR_semctl 10501 case TARGET_NR_semctl: 10502 return do_semctl(arg1, arg2, arg3, arg4); 10503 #endif 10504 #ifdef TARGET_NR_msgctl 10505 case TARGET_NR_msgctl: 10506 return do_msgctl(arg1, arg2, arg3); 10507 #endif 10508 #ifdef TARGET_NR_msgget 10509 case TARGET_NR_msgget: 10510 return get_errno(msgget(arg1, arg2)); 10511 #endif 10512 #ifdef TARGET_NR_msgrcv 10513 case TARGET_NR_msgrcv: 10514 return do_msgrcv(arg1, arg2, arg3, arg4, arg5); 10515 #endif 10516 #ifdef TARGET_NR_msgsnd 10517 case TARGET_NR_msgsnd: 10518 return do_msgsnd(arg1, arg2, arg3, arg4); 10519 #endif 10520 #ifdef TARGET_NR_shmget 10521 case TARGET_NR_shmget: 10522 return get_errno(shmget(arg1, arg2, arg3)); 10523 #endif 10524 #ifdef TARGET_NR_shmctl 10525 case TARGET_NR_shmctl: 10526 return do_shmctl(arg1, arg2, arg3); 10527 #endif 10528 #ifdef TARGET_NR_shmat 10529 case TARGET_NR_shmat: 10530 return do_shmat(cpu_env, arg1, arg2, arg3); 10531 #endif 10532 #ifdef TARGET_NR_shmdt 10533 case TARGET_NR_shmdt: 10534 return do_shmdt(arg1); 10535 #endif 10536 case TARGET_NR_fsync: 10537 return get_errno(fsync(arg1)); 10538 case TARGET_NR_clone: 10539 /* Linux manages to have three different orderings for its 10540 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 10541 * match the kernel's CONFIG_CLONE_* settings. 10542 * Microblaze is further special in that it uses a sixth 10543 * implicit argument to clone for the TLS pointer. 10544 */ 10545 #if defined(TARGET_MICROBLAZE) 10546 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 10547 #elif defined(TARGET_CLONE_BACKWARDS) 10548 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 10549 #elif defined(TARGET_CLONE_BACKWARDS2) 10550 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 10551 #else 10552 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 10553 #endif 10554 return ret; 10555 #ifdef __NR_exit_group 10556 /* new thread calls */ 10557 case TARGET_NR_exit_group: 10558 preexit_cleanup(cpu_env, arg1); 10559 return get_errno(exit_group(arg1)); 10560 #endif 10561 case TARGET_NR_setdomainname: 10562 if (!(p = lock_user_string(arg1))) 10563 return -TARGET_EFAULT; 10564 ret = get_errno(setdomainname(p, arg2)); 10565 unlock_user(p, arg1, 0); 10566 return ret; 10567 case TARGET_NR_uname: 10568 /* no need to transcode because we use the linux syscall */ 10569 { 10570 struct new_utsname * buf; 10571 10572 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 10573 return -TARGET_EFAULT; 10574 ret = get_errno(sys_uname(buf)); 10575 if (!is_error(ret)) { 10576 /* Overwrite the native machine name with whatever is being 10577 emulated. */ 10578 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env), 10579 sizeof(buf->machine)); 10580 /* Allow the user to override the reported release. */ 10581 if (qemu_uname_release && *qemu_uname_release) { 10582 g_strlcpy(buf->release, qemu_uname_release, 10583 sizeof(buf->release)); 10584 } 10585 } 10586 unlock_user_struct(buf, arg1, 1); 10587 } 10588 return ret; 10589 #ifdef TARGET_I386 10590 case TARGET_NR_modify_ldt: 10591 return do_modify_ldt(cpu_env, arg1, arg2, arg3); 10592 #if !defined(TARGET_X86_64) 10593 case TARGET_NR_vm86: 10594 return do_vm86(cpu_env, arg1, arg2); 10595 #endif 10596 #endif 10597 #if defined(TARGET_NR_adjtimex) 10598 case TARGET_NR_adjtimex: 10599 { 10600 struct timex host_buf; 10601 10602 if (target_to_host_timex(&host_buf, arg1) != 0) { 10603 return -TARGET_EFAULT; 10604 } 10605 ret = get_errno(adjtimex(&host_buf)); 10606 if (!is_error(ret)) { 10607 if (host_to_target_timex(arg1, &host_buf) != 0) { 10608 return -TARGET_EFAULT; 10609 } 10610 } 10611 } 10612 return ret; 10613 #endif 10614 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 10615 case TARGET_NR_clock_adjtime: 10616 { 10617 struct timex htx, *phtx = &htx; 10618 10619 if (target_to_host_timex(phtx, arg2) != 0) { 10620 return -TARGET_EFAULT; 10621 } 10622 ret = get_errno(clock_adjtime(arg1, phtx)); 10623 if (!is_error(ret) && phtx) { 10624 if (host_to_target_timex(arg2, phtx) != 0) { 10625 return -TARGET_EFAULT; 10626 } 10627 } 10628 } 10629 return ret; 10630 #endif 10631 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME) 10632 case TARGET_NR_clock_adjtime64: 10633 { 10634 struct timex htx; 10635 10636 if (target_to_host_timex64(&htx, arg2) != 0) { 10637 return -TARGET_EFAULT; 10638 } 10639 ret = get_errno(clock_adjtime(arg1, &htx)); 10640 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) { 10641 return -TARGET_EFAULT; 10642 } 10643 } 10644 return ret; 10645 #endif 10646 case TARGET_NR_getpgid: 10647 return get_errno(getpgid(arg1)); 10648 case TARGET_NR_fchdir: 10649 return get_errno(fchdir(arg1)); 10650 case TARGET_NR_personality: 10651 return get_errno(personality(arg1)); 10652 #ifdef TARGET_NR__llseek /* Not on alpha */ 10653 case TARGET_NR__llseek: 10654 { 10655 int64_t res; 10656 #if !defined(__NR_llseek) 10657 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 10658 if (res == -1) { 10659 ret = get_errno(res); 10660 } else { 10661 ret = 0; 10662 } 10663 #else 10664 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 10665 #endif 10666 if ((ret == 0) && put_user_s64(res, arg4)) { 10667 return -TARGET_EFAULT; 10668 } 10669 } 10670 return ret; 10671 #endif 10672 #ifdef TARGET_NR_getdents 10673 case TARGET_NR_getdents: 10674 return do_getdents(arg1, arg2, arg3); 10675 #endif /* TARGET_NR_getdents */ 10676 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10677 case TARGET_NR_getdents64: 10678 return do_getdents64(arg1, arg2, arg3); 10679 #endif /* TARGET_NR_getdents64 */ 10680 #if defined(TARGET_NR__newselect) 10681 case TARGET_NR__newselect: 10682 return do_select(arg1, arg2, arg3, arg4, arg5); 10683 #endif 10684 #ifdef TARGET_NR_poll 10685 case TARGET_NR_poll: 10686 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); 10687 #endif 10688 #ifdef TARGET_NR_ppoll 10689 case TARGET_NR_ppoll: 10690 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); 10691 #endif 10692 #ifdef TARGET_NR_ppoll_time64 10693 case TARGET_NR_ppoll_time64: 10694 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); 10695 #endif 10696 case TARGET_NR_flock: 10697 /* NOTE: the flock constant seems to be the same for every 10698 Linux platform */ 10699 return get_errno(safe_flock(arg1, arg2)); 10700 case TARGET_NR_readv: 10701 { 10702 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10703 if (vec != NULL) { 10704 ret = get_errno(safe_readv(arg1, vec, arg3)); 10705 unlock_iovec(vec, arg2, arg3, 1); 10706 } else { 10707 ret = -host_to_target_errno(errno); 10708 } 10709 } 10710 return ret; 10711 case TARGET_NR_writev: 10712 { 10713 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10714 if (vec != NULL) { 10715 ret = get_errno(safe_writev(arg1, vec, arg3)); 10716 unlock_iovec(vec, arg2, arg3, 0); 10717 } else { 10718 ret = -host_to_target_errno(errno); 10719 } 10720 } 10721 return ret; 10722 #if defined(TARGET_NR_preadv) 10723 case TARGET_NR_preadv: 10724 { 10725 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10726 if (vec != NULL) { 10727 unsigned long low, high; 10728 10729 target_to_host_low_high(arg4, arg5, &low, &high); 10730 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high)); 10731 unlock_iovec(vec, arg2, arg3, 1); 10732 } else { 10733 ret = -host_to_target_errno(errno); 10734 } 10735 } 10736 return ret; 10737 #endif 10738 #if defined(TARGET_NR_pwritev) 10739 case TARGET_NR_pwritev: 10740 { 10741 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10742 if (vec != NULL) { 10743 unsigned long low, high; 10744 10745 target_to_host_low_high(arg4, arg5, &low, &high); 10746 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high)); 10747 unlock_iovec(vec, arg2, arg3, 0); 10748 } else { 10749 ret = -host_to_target_errno(errno); 10750 } 10751 } 10752 return ret; 10753 #endif 10754 case TARGET_NR_getsid: 10755 return get_errno(getsid(arg1)); 10756 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10757 case TARGET_NR_fdatasync: 10758 return get_errno(fdatasync(arg1)); 10759 #endif 10760 case TARGET_NR_sched_getaffinity: 10761 { 10762 unsigned int mask_size; 10763 unsigned long *mask; 10764 10765 /* 10766 * sched_getaffinity needs multiples of ulong, so need to take 10767 * care of mismatches between target ulong and host ulong sizes. 10768 */ 10769 if (arg2 & (sizeof(abi_ulong) - 1)) { 10770 return -TARGET_EINVAL; 10771 } 10772 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10773 10774 mask = alloca(mask_size); 10775 memset(mask, 0, mask_size); 10776 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10777 10778 if (!is_error(ret)) { 10779 if (ret > arg2) { 10780 /* More data returned than the caller's buffer will fit. 10781 * This only happens if sizeof(abi_long) < sizeof(long) 10782 * and the caller passed us a buffer holding an odd number 10783 * of abi_longs. If the host kernel is actually using the 10784 * extra 4 bytes then fail EINVAL; otherwise we can just 10785 * ignore them and only copy the interesting part. 10786 */ 10787 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10788 if (numcpus > arg2 * 8) { 10789 return -TARGET_EINVAL; 10790 } 10791 ret = arg2; 10792 } 10793 10794 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { 10795 return -TARGET_EFAULT; 10796 } 10797 } 10798 } 10799 return ret; 10800 case TARGET_NR_sched_setaffinity: 10801 { 10802 unsigned int mask_size; 10803 unsigned long *mask; 10804 10805 /* 10806 * sched_setaffinity needs multiples of ulong, so need to take 10807 * care of mismatches between target ulong and host ulong sizes. 10808 */ 10809 if (arg2 & (sizeof(abi_ulong) - 1)) { 10810 return -TARGET_EINVAL; 10811 } 10812 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10813 mask = alloca(mask_size); 10814 10815 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2); 10816 if (ret) { 10817 return ret; 10818 } 10819 10820 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10821 } 10822 case TARGET_NR_getcpu: 10823 { 10824 unsigned cpu, node; 10825 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL, 10826 arg2 ? &node : NULL, 10827 NULL)); 10828 if (is_error(ret)) { 10829 return ret; 10830 } 10831 if (arg1 && put_user_u32(cpu, arg1)) { 10832 return -TARGET_EFAULT; 10833 } 10834 if (arg2 && put_user_u32(node, arg2)) { 10835 return -TARGET_EFAULT; 10836 } 10837 } 10838 return ret; 10839 case TARGET_NR_sched_setparam: 10840 { 10841 struct target_sched_param *target_schp; 10842 struct sched_param schp; 10843 10844 if (arg2 == 0) { 10845 return -TARGET_EINVAL; 10846 } 10847 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) { 10848 return -TARGET_EFAULT; 10849 } 10850 schp.sched_priority = tswap32(target_schp->sched_priority); 10851 unlock_user_struct(target_schp, arg2, 0); 10852 return get_errno(sys_sched_setparam(arg1, &schp)); 10853 } 10854 case TARGET_NR_sched_getparam: 10855 { 10856 struct target_sched_param *target_schp; 10857 struct sched_param schp; 10858 10859 if (arg2 == 0) { 10860 return -TARGET_EINVAL; 10861 } 10862 ret = get_errno(sys_sched_getparam(arg1, &schp)); 10863 if (!is_error(ret)) { 10864 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) { 10865 return -TARGET_EFAULT; 10866 } 10867 target_schp->sched_priority = tswap32(schp.sched_priority); 10868 unlock_user_struct(target_schp, arg2, 1); 10869 } 10870 } 10871 return ret; 10872 case TARGET_NR_sched_setscheduler: 10873 { 10874 struct target_sched_param *target_schp; 10875 struct sched_param schp; 10876 if (arg3 == 0) { 10877 return -TARGET_EINVAL; 10878 } 10879 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) { 10880 return -TARGET_EFAULT; 10881 } 10882 schp.sched_priority = tswap32(target_schp->sched_priority); 10883 unlock_user_struct(target_schp, arg3, 0); 10884 return get_errno(sys_sched_setscheduler(arg1, arg2, &schp)); 10885 } 10886 case TARGET_NR_sched_getscheduler: 10887 return get_errno(sys_sched_getscheduler(arg1)); 10888 case TARGET_NR_sched_getattr: 10889 { 10890 struct target_sched_attr *target_scha; 10891 struct sched_attr scha; 10892 if (arg2 == 0) { 10893 return -TARGET_EINVAL; 10894 } 10895 if (arg3 > sizeof(scha)) { 10896 arg3 = sizeof(scha); 10897 } 10898 ret = get_errno(sys_sched_getattr(arg1, &scha, arg3, arg4)); 10899 if (!is_error(ret)) { 10900 target_scha = lock_user(VERIFY_WRITE, arg2, arg3, 0); 10901 if (!target_scha) { 10902 return -TARGET_EFAULT; 10903 } 10904 target_scha->size = tswap32(scha.size); 10905 target_scha->sched_policy = tswap32(scha.sched_policy); 10906 target_scha->sched_flags = tswap64(scha.sched_flags); 10907 target_scha->sched_nice = tswap32(scha.sched_nice); 10908 target_scha->sched_priority = tswap32(scha.sched_priority); 10909 target_scha->sched_runtime = tswap64(scha.sched_runtime); 10910 target_scha->sched_deadline = tswap64(scha.sched_deadline); 10911 target_scha->sched_period = tswap64(scha.sched_period); 10912 if (scha.size > offsetof(struct sched_attr, sched_util_min)) { 10913 target_scha->sched_util_min = tswap32(scha.sched_util_min); 10914 target_scha->sched_util_max = tswap32(scha.sched_util_max); 10915 } 10916 unlock_user(target_scha, arg2, arg3); 10917 } 10918 return ret; 10919 } 10920 case TARGET_NR_sched_setattr: 10921 { 10922 struct target_sched_attr *target_scha; 10923 struct sched_attr scha; 10924 uint32_t size; 10925 int zeroed; 10926 if (arg2 == 0) { 10927 return -TARGET_EINVAL; 10928 } 10929 if (get_user_u32(size, arg2)) { 10930 return -TARGET_EFAULT; 10931 } 10932 if (!size) { 10933 size = offsetof(struct target_sched_attr, sched_util_min); 10934 } 10935 if (size < offsetof(struct target_sched_attr, sched_util_min)) { 10936 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 10937 return -TARGET_EFAULT; 10938 } 10939 return -TARGET_E2BIG; 10940 } 10941 10942 zeroed = check_zeroed_user(arg2, sizeof(struct target_sched_attr), size); 10943 if (zeroed < 0) { 10944 return zeroed; 10945 } else if (zeroed == 0) { 10946 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) { 10947 return -TARGET_EFAULT; 10948 } 10949 return -TARGET_E2BIG; 10950 } 10951 if (size > sizeof(struct target_sched_attr)) { 10952 size = sizeof(struct target_sched_attr); 10953 } 10954 10955 target_scha = lock_user(VERIFY_READ, arg2, size, 1); 10956 if (!target_scha) { 10957 return -TARGET_EFAULT; 10958 } 10959 scha.size = size; 10960 scha.sched_policy = tswap32(target_scha->sched_policy); 10961 scha.sched_flags = tswap64(target_scha->sched_flags); 10962 scha.sched_nice = tswap32(target_scha->sched_nice); 10963 scha.sched_priority = tswap32(target_scha->sched_priority); 10964 scha.sched_runtime = tswap64(target_scha->sched_runtime); 10965 scha.sched_deadline = tswap64(target_scha->sched_deadline); 10966 scha.sched_period = tswap64(target_scha->sched_period); 10967 if (size > offsetof(struct target_sched_attr, sched_util_min)) { 10968 scha.sched_util_min = tswap32(target_scha->sched_util_min); 10969 scha.sched_util_max = tswap32(target_scha->sched_util_max); 10970 } 10971 unlock_user(target_scha, arg2, 0); 10972 return get_errno(sys_sched_setattr(arg1, &scha, arg3)); 10973 } 10974 case TARGET_NR_sched_yield: 10975 return get_errno(sched_yield()); 10976 case TARGET_NR_sched_get_priority_max: 10977 return get_errno(sched_get_priority_max(arg1)); 10978 case TARGET_NR_sched_get_priority_min: 10979 return get_errno(sched_get_priority_min(arg1)); 10980 #ifdef TARGET_NR_sched_rr_get_interval 10981 case TARGET_NR_sched_rr_get_interval: 10982 { 10983 struct timespec ts; 10984 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10985 if (!is_error(ret)) { 10986 ret = host_to_target_timespec(arg2, &ts); 10987 } 10988 } 10989 return ret; 10990 #endif 10991 #ifdef TARGET_NR_sched_rr_get_interval_time64 10992 case TARGET_NR_sched_rr_get_interval_time64: 10993 { 10994 struct timespec ts; 10995 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10996 if (!is_error(ret)) { 10997 ret = host_to_target_timespec64(arg2, &ts); 10998 } 10999 } 11000 return ret; 11001 #endif 11002 #if defined(TARGET_NR_nanosleep) 11003 case TARGET_NR_nanosleep: 11004 { 11005 struct timespec req, rem; 11006 target_to_host_timespec(&req, arg1); 11007 ret = get_errno(safe_nanosleep(&req, &rem)); 11008 if (is_error(ret) && arg2) { 11009 host_to_target_timespec(arg2, &rem); 11010 } 11011 } 11012 return ret; 11013 #endif 11014 case TARGET_NR_prctl: 11015 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5); 11016 break; 11017 #ifdef TARGET_NR_arch_prctl 11018 case TARGET_NR_arch_prctl: 11019 return do_arch_prctl(cpu_env, arg1, arg2); 11020 #endif 11021 #ifdef TARGET_NR_pread64 11022 case TARGET_NR_pread64: 11023 if (regpairs_aligned(cpu_env, num)) { 11024 arg4 = arg5; 11025 arg5 = arg6; 11026 } 11027 if (arg2 == 0 && arg3 == 0) { 11028 /* Special-case NULL buffer and zero length, which should succeed */ 11029 p = 0; 11030 } else { 11031 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11032 if (!p) { 11033 return -TARGET_EFAULT; 11034 } 11035 } 11036 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 11037 unlock_user(p, arg2, ret); 11038 return ret; 11039 case TARGET_NR_pwrite64: 11040 if (regpairs_aligned(cpu_env, num)) { 11041 arg4 = arg5; 11042 arg5 = arg6; 11043 } 11044 if (arg2 == 0 && arg3 == 0) { 11045 /* Special-case NULL buffer and zero length, which should succeed */ 11046 p = 0; 11047 } else { 11048 p = lock_user(VERIFY_READ, arg2, arg3, 1); 11049 if (!p) { 11050 return -TARGET_EFAULT; 11051 } 11052 } 11053 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 11054 unlock_user(p, arg2, 0); 11055 return ret; 11056 #endif 11057 case TARGET_NR_getcwd: 11058 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 11059 return -TARGET_EFAULT; 11060 ret = get_errno(sys_getcwd1(p, arg2)); 11061 unlock_user(p, arg1, ret); 11062 return ret; 11063 case TARGET_NR_capget: 11064 case TARGET_NR_capset: 11065 { 11066 struct target_user_cap_header *target_header; 11067 struct target_user_cap_data *target_data = NULL; 11068 struct __user_cap_header_struct header; 11069 struct __user_cap_data_struct data[2]; 11070 struct __user_cap_data_struct *dataptr = NULL; 11071 int i, target_datalen; 11072 int data_items = 1; 11073 11074 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 11075 return -TARGET_EFAULT; 11076 } 11077 header.version = tswap32(target_header->version); 11078 header.pid = tswap32(target_header->pid); 11079 11080 if (header.version != _LINUX_CAPABILITY_VERSION) { 11081 /* Version 2 and up takes pointer to two user_data structs */ 11082 data_items = 2; 11083 } 11084 11085 target_datalen = sizeof(*target_data) * data_items; 11086 11087 if (arg2) { 11088 if (num == TARGET_NR_capget) { 11089 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 11090 } else { 11091 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 11092 } 11093 if (!target_data) { 11094 unlock_user_struct(target_header, arg1, 0); 11095 return -TARGET_EFAULT; 11096 } 11097 11098 if (num == TARGET_NR_capset) { 11099 for (i = 0; i < data_items; i++) { 11100 data[i].effective = tswap32(target_data[i].effective); 11101 data[i].permitted = tswap32(target_data[i].permitted); 11102 data[i].inheritable = tswap32(target_data[i].inheritable); 11103 } 11104 } 11105 11106 dataptr = data; 11107 } 11108 11109 if (num == TARGET_NR_capget) { 11110 ret = get_errno(capget(&header, dataptr)); 11111 } else { 11112 ret = get_errno(capset(&header, dataptr)); 11113 } 11114 11115 /* The kernel always updates version for both capget and capset */ 11116 target_header->version = tswap32(header.version); 11117 unlock_user_struct(target_header, arg1, 1); 11118 11119 if (arg2) { 11120 if (num == TARGET_NR_capget) { 11121 for (i = 0; i < data_items; i++) { 11122 target_data[i].effective = tswap32(data[i].effective); 11123 target_data[i].permitted = tswap32(data[i].permitted); 11124 target_data[i].inheritable = tswap32(data[i].inheritable); 11125 } 11126 unlock_user(target_data, arg2, target_datalen); 11127 } else { 11128 unlock_user(target_data, arg2, 0); 11129 } 11130 } 11131 return ret; 11132 } 11133 case TARGET_NR_sigaltstack: 11134 return do_sigaltstack(arg1, arg2, cpu_env); 11135 11136 #ifdef CONFIG_SENDFILE 11137 #ifdef TARGET_NR_sendfile 11138 case TARGET_NR_sendfile: 11139 { 11140 off_t *offp = NULL; 11141 off_t off; 11142 if (arg3) { 11143 ret = get_user_sal(off, arg3); 11144 if (is_error(ret)) { 11145 return ret; 11146 } 11147 offp = &off; 11148 } 11149 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11150 if (!is_error(ret) && arg3) { 11151 abi_long ret2 = put_user_sal(off, arg3); 11152 if (is_error(ret2)) { 11153 ret = ret2; 11154 } 11155 } 11156 return ret; 11157 } 11158 #endif 11159 #ifdef TARGET_NR_sendfile64 11160 case TARGET_NR_sendfile64: 11161 { 11162 off_t *offp = NULL; 11163 off_t off; 11164 if (arg3) { 11165 ret = get_user_s64(off, arg3); 11166 if (is_error(ret)) { 11167 return ret; 11168 } 11169 offp = &off; 11170 } 11171 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 11172 if (!is_error(ret) && arg3) { 11173 abi_long ret2 = put_user_s64(off, arg3); 11174 if (is_error(ret2)) { 11175 ret = ret2; 11176 } 11177 } 11178 return ret; 11179 } 11180 #endif 11181 #endif 11182 #ifdef TARGET_NR_vfork 11183 case TARGET_NR_vfork: 11184 return get_errno(do_fork(cpu_env, 11185 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 11186 0, 0, 0, 0)); 11187 #endif 11188 #ifdef TARGET_NR_ugetrlimit 11189 case TARGET_NR_ugetrlimit: 11190 { 11191 struct rlimit rlim; 11192 int resource = target_to_host_resource(arg1); 11193 ret = get_errno(getrlimit(resource, &rlim)); 11194 if (!is_error(ret)) { 11195 struct target_rlimit *target_rlim; 11196 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 11197 return -TARGET_EFAULT; 11198 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 11199 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 11200 unlock_user_struct(target_rlim, arg2, 1); 11201 } 11202 return ret; 11203 } 11204 #endif 11205 #ifdef TARGET_NR_truncate64 11206 case TARGET_NR_truncate64: 11207 if (!(p = lock_user_string(arg1))) 11208 return -TARGET_EFAULT; 11209 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 11210 unlock_user(p, arg1, 0); 11211 return ret; 11212 #endif 11213 #ifdef TARGET_NR_ftruncate64 11214 case TARGET_NR_ftruncate64: 11215 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 11216 #endif 11217 #ifdef TARGET_NR_stat64 11218 case TARGET_NR_stat64: 11219 if (!(p = lock_user_string(arg1))) { 11220 return -TARGET_EFAULT; 11221 } 11222 ret = get_errno(stat(path(p), &st)); 11223 unlock_user(p, arg1, 0); 11224 if (!is_error(ret)) 11225 ret = host_to_target_stat64(cpu_env, arg2, &st); 11226 return ret; 11227 #endif 11228 #ifdef TARGET_NR_lstat64 11229 case TARGET_NR_lstat64: 11230 if (!(p = lock_user_string(arg1))) { 11231 return -TARGET_EFAULT; 11232 } 11233 ret = get_errno(lstat(path(p), &st)); 11234 unlock_user(p, arg1, 0); 11235 if (!is_error(ret)) 11236 ret = host_to_target_stat64(cpu_env, arg2, &st); 11237 return ret; 11238 #endif 11239 #ifdef TARGET_NR_fstat64 11240 case TARGET_NR_fstat64: 11241 ret = get_errno(fstat(arg1, &st)); 11242 if (!is_error(ret)) 11243 ret = host_to_target_stat64(cpu_env, arg2, &st); 11244 return ret; 11245 #endif 11246 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 11247 #ifdef TARGET_NR_fstatat64 11248 case TARGET_NR_fstatat64: 11249 #endif 11250 #ifdef TARGET_NR_newfstatat 11251 case TARGET_NR_newfstatat: 11252 #endif 11253 if (!(p = lock_user_string(arg2))) { 11254 return -TARGET_EFAULT; 11255 } 11256 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 11257 unlock_user(p, arg2, 0); 11258 if (!is_error(ret)) 11259 ret = host_to_target_stat64(cpu_env, arg3, &st); 11260 return ret; 11261 #endif 11262 #if defined(TARGET_NR_statx) 11263 case TARGET_NR_statx: 11264 { 11265 struct target_statx *target_stx; 11266 int dirfd = arg1; 11267 int flags = arg3; 11268 11269 p = lock_user_string(arg2); 11270 if (p == NULL) { 11271 return -TARGET_EFAULT; 11272 } 11273 #if defined(__NR_statx) 11274 { 11275 /* 11276 * It is assumed that struct statx is architecture independent. 11277 */ 11278 struct target_statx host_stx; 11279 int mask = arg4; 11280 11281 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx)); 11282 if (!is_error(ret)) { 11283 if (host_to_target_statx(&host_stx, arg5) != 0) { 11284 unlock_user(p, arg2, 0); 11285 return -TARGET_EFAULT; 11286 } 11287 } 11288 11289 if (ret != -TARGET_ENOSYS) { 11290 unlock_user(p, arg2, 0); 11291 return ret; 11292 } 11293 } 11294 #endif 11295 ret = get_errno(fstatat(dirfd, path(p), &st, flags)); 11296 unlock_user(p, arg2, 0); 11297 11298 if (!is_error(ret)) { 11299 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) { 11300 return -TARGET_EFAULT; 11301 } 11302 memset(target_stx, 0, sizeof(*target_stx)); 11303 __put_user(major(st.st_dev), &target_stx->stx_dev_major); 11304 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor); 11305 __put_user(st.st_ino, &target_stx->stx_ino); 11306 __put_user(st.st_mode, &target_stx->stx_mode); 11307 __put_user(st.st_uid, &target_stx->stx_uid); 11308 __put_user(st.st_gid, &target_stx->stx_gid); 11309 __put_user(st.st_nlink, &target_stx->stx_nlink); 11310 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major); 11311 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor); 11312 __put_user(st.st_size, &target_stx->stx_size); 11313 __put_user(st.st_blksize, &target_stx->stx_blksize); 11314 __put_user(st.st_blocks, &target_stx->stx_blocks); 11315 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec); 11316 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec); 11317 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec); 11318 unlock_user_struct(target_stx, arg5, 1); 11319 } 11320 } 11321 return ret; 11322 #endif 11323 #ifdef TARGET_NR_lchown 11324 case TARGET_NR_lchown: 11325 if (!(p = lock_user_string(arg1))) 11326 return -TARGET_EFAULT; 11327 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 11328 unlock_user(p, arg1, 0); 11329 return ret; 11330 #endif 11331 #ifdef TARGET_NR_getuid 11332 case TARGET_NR_getuid: 11333 return get_errno(high2lowuid(getuid())); 11334 #endif 11335 #ifdef TARGET_NR_getgid 11336 case TARGET_NR_getgid: 11337 return get_errno(high2lowgid(getgid())); 11338 #endif 11339 #ifdef TARGET_NR_geteuid 11340 case TARGET_NR_geteuid: 11341 return get_errno(high2lowuid(geteuid())); 11342 #endif 11343 #ifdef TARGET_NR_getegid 11344 case TARGET_NR_getegid: 11345 return get_errno(high2lowgid(getegid())); 11346 #endif 11347 case TARGET_NR_setreuid: 11348 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 11349 case TARGET_NR_setregid: 11350 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 11351 case TARGET_NR_getgroups: 11352 { 11353 int gidsetsize = arg1; 11354 target_id *target_grouplist; 11355 gid_t *grouplist; 11356 int i; 11357 11358 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11359 ret = get_errno(getgroups(gidsetsize, grouplist)); 11360 if (gidsetsize == 0) 11361 return ret; 11362 if (!is_error(ret)) { 11363 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 11364 if (!target_grouplist) 11365 return -TARGET_EFAULT; 11366 for(i = 0;i < ret; i++) 11367 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 11368 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 11369 } 11370 } 11371 return ret; 11372 case TARGET_NR_setgroups: 11373 { 11374 int gidsetsize = arg1; 11375 target_id *target_grouplist; 11376 gid_t *grouplist = NULL; 11377 int i; 11378 if (gidsetsize) { 11379 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11380 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 11381 if (!target_grouplist) { 11382 return -TARGET_EFAULT; 11383 } 11384 for (i = 0; i < gidsetsize; i++) { 11385 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 11386 } 11387 unlock_user(target_grouplist, arg2, 0); 11388 } 11389 return get_errno(setgroups(gidsetsize, grouplist)); 11390 } 11391 case TARGET_NR_fchown: 11392 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 11393 #if defined(TARGET_NR_fchownat) 11394 case TARGET_NR_fchownat: 11395 if (!(p = lock_user_string(arg2))) 11396 return -TARGET_EFAULT; 11397 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 11398 low2highgid(arg4), arg5)); 11399 unlock_user(p, arg2, 0); 11400 return ret; 11401 #endif 11402 #ifdef TARGET_NR_setresuid 11403 case TARGET_NR_setresuid: 11404 return get_errno(sys_setresuid(low2highuid(arg1), 11405 low2highuid(arg2), 11406 low2highuid(arg3))); 11407 #endif 11408 #ifdef TARGET_NR_getresuid 11409 case TARGET_NR_getresuid: 11410 { 11411 uid_t ruid, euid, suid; 11412 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11413 if (!is_error(ret)) { 11414 if (put_user_id(high2lowuid(ruid), arg1) 11415 || put_user_id(high2lowuid(euid), arg2) 11416 || put_user_id(high2lowuid(suid), arg3)) 11417 return -TARGET_EFAULT; 11418 } 11419 } 11420 return ret; 11421 #endif 11422 #ifdef TARGET_NR_getresgid 11423 case TARGET_NR_setresgid: 11424 return get_errno(sys_setresgid(low2highgid(arg1), 11425 low2highgid(arg2), 11426 low2highgid(arg3))); 11427 #endif 11428 #ifdef TARGET_NR_getresgid 11429 case TARGET_NR_getresgid: 11430 { 11431 gid_t rgid, egid, sgid; 11432 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11433 if (!is_error(ret)) { 11434 if (put_user_id(high2lowgid(rgid), arg1) 11435 || put_user_id(high2lowgid(egid), arg2) 11436 || put_user_id(high2lowgid(sgid), arg3)) 11437 return -TARGET_EFAULT; 11438 } 11439 } 11440 return ret; 11441 #endif 11442 #ifdef TARGET_NR_chown 11443 case TARGET_NR_chown: 11444 if (!(p = lock_user_string(arg1))) 11445 return -TARGET_EFAULT; 11446 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 11447 unlock_user(p, arg1, 0); 11448 return ret; 11449 #endif 11450 case TARGET_NR_setuid: 11451 return get_errno(sys_setuid(low2highuid(arg1))); 11452 case TARGET_NR_setgid: 11453 return get_errno(sys_setgid(low2highgid(arg1))); 11454 case TARGET_NR_setfsuid: 11455 return get_errno(setfsuid(arg1)); 11456 case TARGET_NR_setfsgid: 11457 return get_errno(setfsgid(arg1)); 11458 11459 #ifdef TARGET_NR_lchown32 11460 case TARGET_NR_lchown32: 11461 if (!(p = lock_user_string(arg1))) 11462 return -TARGET_EFAULT; 11463 ret = get_errno(lchown(p, arg2, arg3)); 11464 unlock_user(p, arg1, 0); 11465 return ret; 11466 #endif 11467 #ifdef TARGET_NR_getuid32 11468 case TARGET_NR_getuid32: 11469 return get_errno(getuid()); 11470 #endif 11471 11472 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 11473 /* Alpha specific */ 11474 case TARGET_NR_getxuid: 11475 { 11476 uid_t euid; 11477 euid=geteuid(); 11478 cpu_env->ir[IR_A4]=euid; 11479 } 11480 return get_errno(getuid()); 11481 #endif 11482 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 11483 /* Alpha specific */ 11484 case TARGET_NR_getxgid: 11485 { 11486 uid_t egid; 11487 egid=getegid(); 11488 cpu_env->ir[IR_A4]=egid; 11489 } 11490 return get_errno(getgid()); 11491 #endif 11492 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 11493 /* Alpha specific */ 11494 case TARGET_NR_osf_getsysinfo: 11495 ret = -TARGET_EOPNOTSUPP; 11496 switch (arg1) { 11497 case TARGET_GSI_IEEE_FP_CONTROL: 11498 { 11499 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env); 11500 uint64_t swcr = cpu_env->swcr; 11501 11502 swcr &= ~SWCR_STATUS_MASK; 11503 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK; 11504 11505 if (put_user_u64 (swcr, arg2)) 11506 return -TARGET_EFAULT; 11507 ret = 0; 11508 } 11509 break; 11510 11511 /* case GSI_IEEE_STATE_AT_SIGNAL: 11512 -- Not implemented in linux kernel. 11513 case GSI_UACPROC: 11514 -- Retrieves current unaligned access state; not much used. 11515 case GSI_PROC_TYPE: 11516 -- Retrieves implver information; surely not used. 11517 case GSI_GET_HWRPB: 11518 -- Grabs a copy of the HWRPB; surely not used. 11519 */ 11520 } 11521 return ret; 11522 #endif 11523 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 11524 /* Alpha specific */ 11525 case TARGET_NR_osf_setsysinfo: 11526 ret = -TARGET_EOPNOTSUPP; 11527 switch (arg1) { 11528 case TARGET_SSI_IEEE_FP_CONTROL: 11529 { 11530 uint64_t swcr, fpcr; 11531 11532 if (get_user_u64 (swcr, arg2)) { 11533 return -TARGET_EFAULT; 11534 } 11535 11536 /* 11537 * The kernel calls swcr_update_status to update the 11538 * status bits from the fpcr at every point that it 11539 * could be queried. Therefore, we store the status 11540 * bits only in FPCR. 11541 */ 11542 cpu_env->swcr = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK); 11543 11544 fpcr = cpu_alpha_load_fpcr(cpu_env); 11545 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32); 11546 fpcr |= alpha_ieee_swcr_to_fpcr(swcr); 11547 cpu_alpha_store_fpcr(cpu_env, fpcr); 11548 ret = 0; 11549 } 11550 break; 11551 11552 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 11553 { 11554 uint64_t exc, fpcr, fex; 11555 11556 if (get_user_u64(exc, arg2)) { 11557 return -TARGET_EFAULT; 11558 } 11559 exc &= SWCR_STATUS_MASK; 11560 fpcr = cpu_alpha_load_fpcr(cpu_env); 11561 11562 /* Old exceptions are not signaled. */ 11563 fex = alpha_ieee_fpcr_to_swcr(fpcr); 11564 fex = exc & ~fex; 11565 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT; 11566 fex &= (cpu_env)->swcr; 11567 11568 /* Update the hardware fpcr. */ 11569 fpcr |= alpha_ieee_swcr_to_fpcr(exc); 11570 cpu_alpha_store_fpcr(cpu_env, fpcr); 11571 11572 if (fex) { 11573 int si_code = TARGET_FPE_FLTUNK; 11574 target_siginfo_t info; 11575 11576 if (fex & SWCR_TRAP_ENABLE_DNO) { 11577 si_code = TARGET_FPE_FLTUND; 11578 } 11579 if (fex & SWCR_TRAP_ENABLE_INE) { 11580 si_code = TARGET_FPE_FLTRES; 11581 } 11582 if (fex & SWCR_TRAP_ENABLE_UNF) { 11583 si_code = TARGET_FPE_FLTUND; 11584 } 11585 if (fex & SWCR_TRAP_ENABLE_OVF) { 11586 si_code = TARGET_FPE_FLTOVF; 11587 } 11588 if (fex & SWCR_TRAP_ENABLE_DZE) { 11589 si_code = TARGET_FPE_FLTDIV; 11590 } 11591 if (fex & SWCR_TRAP_ENABLE_INV) { 11592 si_code = TARGET_FPE_FLTINV; 11593 } 11594 11595 info.si_signo = SIGFPE; 11596 info.si_errno = 0; 11597 info.si_code = si_code; 11598 info._sifields._sigfault._addr = (cpu_env)->pc; 11599 queue_signal(cpu_env, info.si_signo, 11600 QEMU_SI_FAULT, &info); 11601 } 11602 ret = 0; 11603 } 11604 break; 11605 11606 /* case SSI_NVPAIRS: 11607 -- Used with SSIN_UACPROC to enable unaligned accesses. 11608 case SSI_IEEE_STATE_AT_SIGNAL: 11609 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11610 -- Not implemented in linux kernel 11611 */ 11612 } 11613 return ret; 11614 #endif 11615 #ifdef TARGET_NR_osf_sigprocmask 11616 /* Alpha specific. */ 11617 case TARGET_NR_osf_sigprocmask: 11618 { 11619 abi_ulong mask; 11620 int how; 11621 sigset_t set, oldset; 11622 11623 switch(arg1) { 11624 case TARGET_SIG_BLOCK: 11625 how = SIG_BLOCK; 11626 break; 11627 case TARGET_SIG_UNBLOCK: 11628 how = SIG_UNBLOCK; 11629 break; 11630 case TARGET_SIG_SETMASK: 11631 how = SIG_SETMASK; 11632 break; 11633 default: 11634 return -TARGET_EINVAL; 11635 } 11636 mask = arg2; 11637 target_to_host_old_sigset(&set, &mask); 11638 ret = do_sigprocmask(how, &set, &oldset); 11639 if (!ret) { 11640 host_to_target_old_sigset(&mask, &oldset); 11641 ret = mask; 11642 } 11643 } 11644 return ret; 11645 #endif 11646 11647 #ifdef TARGET_NR_getgid32 11648 case TARGET_NR_getgid32: 11649 return get_errno(getgid()); 11650 #endif 11651 #ifdef TARGET_NR_geteuid32 11652 case TARGET_NR_geteuid32: 11653 return get_errno(geteuid()); 11654 #endif 11655 #ifdef TARGET_NR_getegid32 11656 case TARGET_NR_getegid32: 11657 return get_errno(getegid()); 11658 #endif 11659 #ifdef TARGET_NR_setreuid32 11660 case TARGET_NR_setreuid32: 11661 return get_errno(setreuid(arg1, arg2)); 11662 #endif 11663 #ifdef TARGET_NR_setregid32 11664 case TARGET_NR_setregid32: 11665 return get_errno(setregid(arg1, arg2)); 11666 #endif 11667 #ifdef TARGET_NR_getgroups32 11668 case TARGET_NR_getgroups32: 11669 { 11670 int gidsetsize = arg1; 11671 uint32_t *target_grouplist; 11672 gid_t *grouplist; 11673 int i; 11674 11675 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11676 ret = get_errno(getgroups(gidsetsize, grouplist)); 11677 if (gidsetsize == 0) 11678 return ret; 11679 if (!is_error(ret)) { 11680 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11681 if (!target_grouplist) { 11682 return -TARGET_EFAULT; 11683 } 11684 for(i = 0;i < ret; i++) 11685 target_grouplist[i] = tswap32(grouplist[i]); 11686 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11687 } 11688 } 11689 return ret; 11690 #endif 11691 #ifdef TARGET_NR_setgroups32 11692 case TARGET_NR_setgroups32: 11693 { 11694 int gidsetsize = arg1; 11695 uint32_t *target_grouplist; 11696 gid_t *grouplist; 11697 int i; 11698 11699 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11700 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11701 if (!target_grouplist) { 11702 return -TARGET_EFAULT; 11703 } 11704 for(i = 0;i < gidsetsize; i++) 11705 grouplist[i] = tswap32(target_grouplist[i]); 11706 unlock_user(target_grouplist, arg2, 0); 11707 return get_errno(setgroups(gidsetsize, grouplist)); 11708 } 11709 #endif 11710 #ifdef TARGET_NR_fchown32 11711 case TARGET_NR_fchown32: 11712 return get_errno(fchown(arg1, arg2, arg3)); 11713 #endif 11714 #ifdef TARGET_NR_setresuid32 11715 case TARGET_NR_setresuid32: 11716 return get_errno(sys_setresuid(arg1, arg2, arg3)); 11717 #endif 11718 #ifdef TARGET_NR_getresuid32 11719 case TARGET_NR_getresuid32: 11720 { 11721 uid_t ruid, euid, suid; 11722 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11723 if (!is_error(ret)) { 11724 if (put_user_u32(ruid, arg1) 11725 || put_user_u32(euid, arg2) 11726 || put_user_u32(suid, arg3)) 11727 return -TARGET_EFAULT; 11728 } 11729 } 11730 return ret; 11731 #endif 11732 #ifdef TARGET_NR_setresgid32 11733 case TARGET_NR_setresgid32: 11734 return get_errno(sys_setresgid(arg1, arg2, arg3)); 11735 #endif 11736 #ifdef TARGET_NR_getresgid32 11737 case TARGET_NR_getresgid32: 11738 { 11739 gid_t rgid, egid, sgid; 11740 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11741 if (!is_error(ret)) { 11742 if (put_user_u32(rgid, arg1) 11743 || put_user_u32(egid, arg2) 11744 || put_user_u32(sgid, arg3)) 11745 return -TARGET_EFAULT; 11746 } 11747 } 11748 return ret; 11749 #endif 11750 #ifdef TARGET_NR_chown32 11751 case TARGET_NR_chown32: 11752 if (!(p = lock_user_string(arg1))) 11753 return -TARGET_EFAULT; 11754 ret = get_errno(chown(p, arg2, arg3)); 11755 unlock_user(p, arg1, 0); 11756 return ret; 11757 #endif 11758 #ifdef TARGET_NR_setuid32 11759 case TARGET_NR_setuid32: 11760 return get_errno(sys_setuid(arg1)); 11761 #endif 11762 #ifdef TARGET_NR_setgid32 11763 case TARGET_NR_setgid32: 11764 return get_errno(sys_setgid(arg1)); 11765 #endif 11766 #ifdef TARGET_NR_setfsuid32 11767 case TARGET_NR_setfsuid32: 11768 return get_errno(setfsuid(arg1)); 11769 #endif 11770 #ifdef TARGET_NR_setfsgid32 11771 case TARGET_NR_setfsgid32: 11772 return get_errno(setfsgid(arg1)); 11773 #endif 11774 #ifdef TARGET_NR_mincore 11775 case TARGET_NR_mincore: 11776 { 11777 void *a = lock_user(VERIFY_READ, arg1, arg2, 0); 11778 if (!a) { 11779 return -TARGET_ENOMEM; 11780 } 11781 p = lock_user_string(arg3); 11782 if (!p) { 11783 ret = -TARGET_EFAULT; 11784 } else { 11785 ret = get_errno(mincore(a, arg2, p)); 11786 unlock_user(p, arg3, ret); 11787 } 11788 unlock_user(a, arg1, 0); 11789 } 11790 return ret; 11791 #endif 11792 #ifdef TARGET_NR_arm_fadvise64_64 11793 case TARGET_NR_arm_fadvise64_64: 11794 /* arm_fadvise64_64 looks like fadvise64_64 but 11795 * with different argument order: fd, advice, offset, len 11796 * rather than the usual fd, offset, len, advice. 11797 * Note that offset and len are both 64-bit so appear as 11798 * pairs of 32-bit registers. 11799 */ 11800 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11801 target_offset64(arg5, arg6), arg2); 11802 return -host_to_target_errno(ret); 11803 #endif 11804 11805 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 11806 11807 #ifdef TARGET_NR_fadvise64_64 11808 case TARGET_NR_fadvise64_64: 11809 #if defined(TARGET_PPC) || defined(TARGET_XTENSA) 11810 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11811 ret = arg2; 11812 arg2 = arg3; 11813 arg3 = arg4; 11814 arg4 = arg5; 11815 arg5 = arg6; 11816 arg6 = ret; 11817 #else 11818 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11819 if (regpairs_aligned(cpu_env, num)) { 11820 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11821 arg2 = arg3; 11822 arg3 = arg4; 11823 arg4 = arg5; 11824 arg5 = arg6; 11825 arg6 = arg7; 11826 } 11827 #endif 11828 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), 11829 target_offset64(arg4, arg5), arg6); 11830 return -host_to_target_errno(ret); 11831 #endif 11832 11833 #ifdef TARGET_NR_fadvise64 11834 case TARGET_NR_fadvise64: 11835 /* 5 args: fd, offset (high, low), len, advice */ 11836 if (regpairs_aligned(cpu_env, num)) { 11837 /* offset is in (3,4), len in 5 and advice in 6 */ 11838 arg2 = arg3; 11839 arg3 = arg4; 11840 arg4 = arg5; 11841 arg5 = arg6; 11842 } 11843 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5); 11844 return -host_to_target_errno(ret); 11845 #endif 11846 11847 #else /* not a 32-bit ABI */ 11848 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11849 #ifdef TARGET_NR_fadvise64_64 11850 case TARGET_NR_fadvise64_64: 11851 #endif 11852 #ifdef TARGET_NR_fadvise64 11853 case TARGET_NR_fadvise64: 11854 #endif 11855 #ifdef TARGET_S390X 11856 switch (arg4) { 11857 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11858 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11859 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11860 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11861 default: break; 11862 } 11863 #endif 11864 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11865 #endif 11866 #endif /* end of 64-bit ABI fadvise handling */ 11867 11868 #ifdef TARGET_NR_madvise 11869 case TARGET_NR_madvise: 11870 return target_madvise(arg1, arg2, arg3); 11871 #endif 11872 #ifdef TARGET_NR_fcntl64 11873 case TARGET_NR_fcntl64: 11874 { 11875 int cmd; 11876 struct flock64 fl; 11877 from_flock64_fn *copyfrom = copy_from_user_flock64; 11878 to_flock64_fn *copyto = copy_to_user_flock64; 11879 11880 #ifdef TARGET_ARM 11881 if (!cpu_env->eabi) { 11882 copyfrom = copy_from_user_oabi_flock64; 11883 copyto = copy_to_user_oabi_flock64; 11884 } 11885 #endif 11886 11887 cmd = target_to_host_fcntl_cmd(arg2); 11888 if (cmd == -TARGET_EINVAL) { 11889 return cmd; 11890 } 11891 11892 switch(arg2) { 11893 case TARGET_F_GETLK64: 11894 ret = copyfrom(&fl, arg3); 11895 if (ret) { 11896 break; 11897 } 11898 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11899 if (ret == 0) { 11900 ret = copyto(arg3, &fl); 11901 } 11902 break; 11903 11904 case TARGET_F_SETLK64: 11905 case TARGET_F_SETLKW64: 11906 ret = copyfrom(&fl, arg3); 11907 if (ret) { 11908 break; 11909 } 11910 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11911 break; 11912 default: 11913 ret = do_fcntl(arg1, arg2, arg3); 11914 break; 11915 } 11916 return ret; 11917 } 11918 #endif 11919 #ifdef TARGET_NR_cacheflush 11920 case TARGET_NR_cacheflush: 11921 /* self-modifying code is handled automatically, so nothing needed */ 11922 return 0; 11923 #endif 11924 #ifdef TARGET_NR_getpagesize 11925 case TARGET_NR_getpagesize: 11926 return TARGET_PAGE_SIZE; 11927 #endif 11928 case TARGET_NR_gettid: 11929 return get_errno(sys_gettid()); 11930 #ifdef TARGET_NR_readahead 11931 case TARGET_NR_readahead: 11932 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 11933 if (regpairs_aligned(cpu_env, num)) { 11934 arg2 = arg3; 11935 arg3 = arg4; 11936 arg4 = arg5; 11937 } 11938 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11939 #else 11940 ret = get_errno(readahead(arg1, arg2, arg3)); 11941 #endif 11942 return ret; 11943 #endif 11944 #ifdef CONFIG_ATTR 11945 #ifdef TARGET_NR_setxattr 11946 case TARGET_NR_listxattr: 11947 case TARGET_NR_llistxattr: 11948 { 11949 void *p, *b = 0; 11950 if (arg2) { 11951 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11952 if (!b) { 11953 return -TARGET_EFAULT; 11954 } 11955 } 11956 p = lock_user_string(arg1); 11957 if (p) { 11958 if (num == TARGET_NR_listxattr) { 11959 ret = get_errno(listxattr(p, b, arg3)); 11960 } else { 11961 ret = get_errno(llistxattr(p, b, arg3)); 11962 } 11963 } else { 11964 ret = -TARGET_EFAULT; 11965 } 11966 unlock_user(p, arg1, 0); 11967 unlock_user(b, arg2, arg3); 11968 return ret; 11969 } 11970 case TARGET_NR_flistxattr: 11971 { 11972 void *b = 0; 11973 if (arg2) { 11974 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11975 if (!b) { 11976 return -TARGET_EFAULT; 11977 } 11978 } 11979 ret = get_errno(flistxattr(arg1, b, arg3)); 11980 unlock_user(b, arg2, arg3); 11981 return ret; 11982 } 11983 case TARGET_NR_setxattr: 11984 case TARGET_NR_lsetxattr: 11985 { 11986 void *p, *n, *v = 0; 11987 if (arg3) { 11988 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11989 if (!v) { 11990 return -TARGET_EFAULT; 11991 } 11992 } 11993 p = lock_user_string(arg1); 11994 n = lock_user_string(arg2); 11995 if (p && n) { 11996 if (num == TARGET_NR_setxattr) { 11997 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 11998 } else { 11999 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 12000 } 12001 } else { 12002 ret = -TARGET_EFAULT; 12003 } 12004 unlock_user(p, arg1, 0); 12005 unlock_user(n, arg2, 0); 12006 unlock_user(v, arg3, 0); 12007 } 12008 return ret; 12009 case TARGET_NR_fsetxattr: 12010 { 12011 void *n, *v = 0; 12012 if (arg3) { 12013 v = lock_user(VERIFY_READ, arg3, arg4, 1); 12014 if (!v) { 12015 return -TARGET_EFAULT; 12016 } 12017 } 12018 n = lock_user_string(arg2); 12019 if (n) { 12020 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 12021 } else { 12022 ret = -TARGET_EFAULT; 12023 } 12024 unlock_user(n, arg2, 0); 12025 unlock_user(v, arg3, 0); 12026 } 12027 return ret; 12028 case TARGET_NR_getxattr: 12029 case TARGET_NR_lgetxattr: 12030 { 12031 void *p, *n, *v = 0; 12032 if (arg3) { 12033 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12034 if (!v) { 12035 return -TARGET_EFAULT; 12036 } 12037 } 12038 p = lock_user_string(arg1); 12039 n = lock_user_string(arg2); 12040 if (p && n) { 12041 if (num == TARGET_NR_getxattr) { 12042 ret = get_errno(getxattr(p, n, v, arg4)); 12043 } else { 12044 ret = get_errno(lgetxattr(p, n, v, arg4)); 12045 } 12046 } else { 12047 ret = -TARGET_EFAULT; 12048 } 12049 unlock_user(p, arg1, 0); 12050 unlock_user(n, arg2, 0); 12051 unlock_user(v, arg3, arg4); 12052 } 12053 return ret; 12054 case TARGET_NR_fgetxattr: 12055 { 12056 void *n, *v = 0; 12057 if (arg3) { 12058 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 12059 if (!v) { 12060 return -TARGET_EFAULT; 12061 } 12062 } 12063 n = lock_user_string(arg2); 12064 if (n) { 12065 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 12066 } else { 12067 ret = -TARGET_EFAULT; 12068 } 12069 unlock_user(n, arg2, 0); 12070 unlock_user(v, arg3, arg4); 12071 } 12072 return ret; 12073 case TARGET_NR_removexattr: 12074 case TARGET_NR_lremovexattr: 12075 { 12076 void *p, *n; 12077 p = lock_user_string(arg1); 12078 n = lock_user_string(arg2); 12079 if (p && n) { 12080 if (num == TARGET_NR_removexattr) { 12081 ret = get_errno(removexattr(p, n)); 12082 } else { 12083 ret = get_errno(lremovexattr(p, n)); 12084 } 12085 } else { 12086 ret = -TARGET_EFAULT; 12087 } 12088 unlock_user(p, arg1, 0); 12089 unlock_user(n, arg2, 0); 12090 } 12091 return ret; 12092 case TARGET_NR_fremovexattr: 12093 { 12094 void *n; 12095 n = lock_user_string(arg2); 12096 if (n) { 12097 ret = get_errno(fremovexattr(arg1, n)); 12098 } else { 12099 ret = -TARGET_EFAULT; 12100 } 12101 unlock_user(n, arg2, 0); 12102 } 12103 return ret; 12104 #endif 12105 #endif /* CONFIG_ATTR */ 12106 #ifdef TARGET_NR_set_thread_area 12107 case TARGET_NR_set_thread_area: 12108 #if defined(TARGET_MIPS) 12109 cpu_env->active_tc.CP0_UserLocal = arg1; 12110 return 0; 12111 #elif defined(TARGET_CRIS) 12112 if (arg1 & 0xff) 12113 ret = -TARGET_EINVAL; 12114 else { 12115 cpu_env->pregs[PR_PID] = arg1; 12116 ret = 0; 12117 } 12118 return ret; 12119 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 12120 return do_set_thread_area(cpu_env, arg1); 12121 #elif defined(TARGET_M68K) 12122 { 12123 TaskState *ts = cpu->opaque; 12124 ts->tp_value = arg1; 12125 return 0; 12126 } 12127 #else 12128 return -TARGET_ENOSYS; 12129 #endif 12130 #endif 12131 #ifdef TARGET_NR_get_thread_area 12132 case TARGET_NR_get_thread_area: 12133 #if defined(TARGET_I386) && defined(TARGET_ABI32) 12134 return do_get_thread_area(cpu_env, arg1); 12135 #elif defined(TARGET_M68K) 12136 { 12137 TaskState *ts = cpu->opaque; 12138 return ts->tp_value; 12139 } 12140 #else 12141 return -TARGET_ENOSYS; 12142 #endif 12143 #endif 12144 #ifdef TARGET_NR_getdomainname 12145 case TARGET_NR_getdomainname: 12146 return -TARGET_ENOSYS; 12147 #endif 12148 12149 #ifdef TARGET_NR_clock_settime 12150 case TARGET_NR_clock_settime: 12151 { 12152 struct timespec ts; 12153 12154 ret = target_to_host_timespec(&ts, arg2); 12155 if (!is_error(ret)) { 12156 ret = get_errno(clock_settime(arg1, &ts)); 12157 } 12158 return ret; 12159 } 12160 #endif 12161 #ifdef TARGET_NR_clock_settime64 12162 case TARGET_NR_clock_settime64: 12163 { 12164 struct timespec ts; 12165 12166 ret = target_to_host_timespec64(&ts, arg2); 12167 if (!is_error(ret)) { 12168 ret = get_errno(clock_settime(arg1, &ts)); 12169 } 12170 return ret; 12171 } 12172 #endif 12173 #ifdef TARGET_NR_clock_gettime 12174 case TARGET_NR_clock_gettime: 12175 { 12176 struct timespec ts; 12177 ret = get_errno(clock_gettime(arg1, &ts)); 12178 if (!is_error(ret)) { 12179 ret = host_to_target_timespec(arg2, &ts); 12180 } 12181 return ret; 12182 } 12183 #endif 12184 #ifdef TARGET_NR_clock_gettime64 12185 case TARGET_NR_clock_gettime64: 12186 { 12187 struct timespec ts; 12188 ret = get_errno(clock_gettime(arg1, &ts)); 12189 if (!is_error(ret)) { 12190 ret = host_to_target_timespec64(arg2, &ts); 12191 } 12192 return ret; 12193 } 12194 #endif 12195 #ifdef TARGET_NR_clock_getres 12196 case TARGET_NR_clock_getres: 12197 { 12198 struct timespec ts; 12199 ret = get_errno(clock_getres(arg1, &ts)); 12200 if (!is_error(ret)) { 12201 host_to_target_timespec(arg2, &ts); 12202 } 12203 return ret; 12204 } 12205 #endif 12206 #ifdef TARGET_NR_clock_getres_time64 12207 case TARGET_NR_clock_getres_time64: 12208 { 12209 struct timespec ts; 12210 ret = get_errno(clock_getres(arg1, &ts)); 12211 if (!is_error(ret)) { 12212 host_to_target_timespec64(arg2, &ts); 12213 } 12214 return ret; 12215 } 12216 #endif 12217 #ifdef TARGET_NR_clock_nanosleep 12218 case TARGET_NR_clock_nanosleep: 12219 { 12220 struct timespec ts; 12221 if (target_to_host_timespec(&ts, arg3)) { 12222 return -TARGET_EFAULT; 12223 } 12224 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12225 &ts, arg4 ? &ts : NULL)); 12226 /* 12227 * if the call is interrupted by a signal handler, it fails 12228 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not 12229 * TIMER_ABSTIME, it returns the remaining unslept time in arg4. 12230 */ 12231 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12232 host_to_target_timespec(arg4, &ts)) { 12233 return -TARGET_EFAULT; 12234 } 12235 12236 return ret; 12237 } 12238 #endif 12239 #ifdef TARGET_NR_clock_nanosleep_time64 12240 case TARGET_NR_clock_nanosleep_time64: 12241 { 12242 struct timespec ts; 12243 12244 if (target_to_host_timespec64(&ts, arg3)) { 12245 return -TARGET_EFAULT; 12246 } 12247 12248 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 12249 &ts, arg4 ? &ts : NULL)); 12250 12251 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME && 12252 host_to_target_timespec64(arg4, &ts)) { 12253 return -TARGET_EFAULT; 12254 } 12255 return ret; 12256 } 12257 #endif 12258 12259 #if defined(TARGET_NR_set_tid_address) 12260 case TARGET_NR_set_tid_address: 12261 { 12262 TaskState *ts = cpu->opaque; 12263 ts->child_tidptr = arg1; 12264 /* do not call host set_tid_address() syscall, instead return tid() */ 12265 return get_errno(sys_gettid()); 12266 } 12267 #endif 12268 12269 case TARGET_NR_tkill: 12270 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 12271 12272 case TARGET_NR_tgkill: 12273 return get_errno(safe_tgkill((int)arg1, (int)arg2, 12274 target_to_host_signal(arg3))); 12275 12276 #ifdef TARGET_NR_set_robust_list 12277 case TARGET_NR_set_robust_list: 12278 case TARGET_NR_get_robust_list: 12279 /* The ABI for supporting robust futexes has userspace pass 12280 * the kernel a pointer to a linked list which is updated by 12281 * userspace after the syscall; the list is walked by the kernel 12282 * when the thread exits. Since the linked list in QEMU guest 12283 * memory isn't a valid linked list for the host and we have 12284 * no way to reliably intercept the thread-death event, we can't 12285 * support these. Silently return ENOSYS so that guest userspace 12286 * falls back to a non-robust futex implementation (which should 12287 * be OK except in the corner case of the guest crashing while 12288 * holding a mutex that is shared with another process via 12289 * shared memory). 12290 */ 12291 return -TARGET_ENOSYS; 12292 #endif 12293 12294 #if defined(TARGET_NR_utimensat) 12295 case TARGET_NR_utimensat: 12296 { 12297 struct timespec *tsp, ts[2]; 12298 if (!arg3) { 12299 tsp = NULL; 12300 } else { 12301 if (target_to_host_timespec(ts, arg3)) { 12302 return -TARGET_EFAULT; 12303 } 12304 if (target_to_host_timespec(ts + 1, arg3 + 12305 sizeof(struct target_timespec))) { 12306 return -TARGET_EFAULT; 12307 } 12308 tsp = ts; 12309 } 12310 if (!arg2) 12311 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12312 else { 12313 if (!(p = lock_user_string(arg2))) { 12314 return -TARGET_EFAULT; 12315 } 12316 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12317 unlock_user(p, arg2, 0); 12318 } 12319 } 12320 return ret; 12321 #endif 12322 #ifdef TARGET_NR_utimensat_time64 12323 case TARGET_NR_utimensat_time64: 12324 { 12325 struct timespec *tsp, ts[2]; 12326 if (!arg3) { 12327 tsp = NULL; 12328 } else { 12329 if (target_to_host_timespec64(ts, arg3)) { 12330 return -TARGET_EFAULT; 12331 } 12332 if (target_to_host_timespec64(ts + 1, arg3 + 12333 sizeof(struct target__kernel_timespec))) { 12334 return -TARGET_EFAULT; 12335 } 12336 tsp = ts; 12337 } 12338 if (!arg2) 12339 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 12340 else { 12341 p = lock_user_string(arg2); 12342 if (!p) { 12343 return -TARGET_EFAULT; 12344 } 12345 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 12346 unlock_user(p, arg2, 0); 12347 } 12348 } 12349 return ret; 12350 #endif 12351 #ifdef TARGET_NR_futex 12352 case TARGET_NR_futex: 12353 return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6); 12354 #endif 12355 #ifdef TARGET_NR_futex_time64 12356 case TARGET_NR_futex_time64: 12357 return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6); 12358 #endif 12359 #ifdef CONFIG_INOTIFY 12360 #if defined(TARGET_NR_inotify_init) 12361 case TARGET_NR_inotify_init: 12362 ret = get_errno(inotify_init()); 12363 if (ret >= 0) { 12364 fd_trans_register(ret, &target_inotify_trans); 12365 } 12366 return ret; 12367 #endif 12368 #if defined(TARGET_NR_inotify_init1) && defined(CONFIG_INOTIFY1) 12369 case TARGET_NR_inotify_init1: 12370 ret = get_errno(inotify_init1(target_to_host_bitmask(arg1, 12371 fcntl_flags_tbl))); 12372 if (ret >= 0) { 12373 fd_trans_register(ret, &target_inotify_trans); 12374 } 12375 return ret; 12376 #endif 12377 #if defined(TARGET_NR_inotify_add_watch) 12378 case TARGET_NR_inotify_add_watch: 12379 p = lock_user_string(arg2); 12380 ret = get_errno(inotify_add_watch(arg1, path(p), arg3)); 12381 unlock_user(p, arg2, 0); 12382 return ret; 12383 #endif 12384 #if defined(TARGET_NR_inotify_rm_watch) 12385 case TARGET_NR_inotify_rm_watch: 12386 return get_errno(inotify_rm_watch(arg1, arg2)); 12387 #endif 12388 #endif 12389 12390 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 12391 case TARGET_NR_mq_open: 12392 { 12393 struct mq_attr posix_mq_attr; 12394 struct mq_attr *pposix_mq_attr; 12395 int host_flags; 12396 12397 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 12398 pposix_mq_attr = NULL; 12399 if (arg4) { 12400 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 12401 return -TARGET_EFAULT; 12402 } 12403 pposix_mq_attr = &posix_mq_attr; 12404 } 12405 p = lock_user_string(arg1 - 1); 12406 if (!p) { 12407 return -TARGET_EFAULT; 12408 } 12409 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 12410 unlock_user (p, arg1, 0); 12411 } 12412 return ret; 12413 12414 case TARGET_NR_mq_unlink: 12415 p = lock_user_string(arg1 - 1); 12416 if (!p) { 12417 return -TARGET_EFAULT; 12418 } 12419 ret = get_errno(mq_unlink(p)); 12420 unlock_user (p, arg1, 0); 12421 return ret; 12422 12423 #ifdef TARGET_NR_mq_timedsend 12424 case TARGET_NR_mq_timedsend: 12425 { 12426 struct timespec ts; 12427 12428 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12429 if (arg5 != 0) { 12430 if (target_to_host_timespec(&ts, arg5)) { 12431 return -TARGET_EFAULT; 12432 } 12433 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12434 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12435 return -TARGET_EFAULT; 12436 } 12437 } else { 12438 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12439 } 12440 unlock_user (p, arg2, arg3); 12441 } 12442 return ret; 12443 #endif 12444 #ifdef TARGET_NR_mq_timedsend_time64 12445 case TARGET_NR_mq_timedsend_time64: 12446 { 12447 struct timespec ts; 12448 12449 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12450 if (arg5 != 0) { 12451 if (target_to_host_timespec64(&ts, arg5)) { 12452 return -TARGET_EFAULT; 12453 } 12454 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 12455 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12456 return -TARGET_EFAULT; 12457 } 12458 } else { 12459 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 12460 } 12461 unlock_user(p, arg2, arg3); 12462 } 12463 return ret; 12464 #endif 12465 12466 #ifdef TARGET_NR_mq_timedreceive 12467 case TARGET_NR_mq_timedreceive: 12468 { 12469 struct timespec ts; 12470 unsigned int prio; 12471 12472 p = lock_user (VERIFY_READ, arg2, arg3, 1); 12473 if (arg5 != 0) { 12474 if (target_to_host_timespec(&ts, arg5)) { 12475 return -TARGET_EFAULT; 12476 } 12477 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12478 &prio, &ts)); 12479 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) { 12480 return -TARGET_EFAULT; 12481 } 12482 } else { 12483 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12484 &prio, NULL)); 12485 } 12486 unlock_user (p, arg2, arg3); 12487 if (arg4 != 0) 12488 put_user_u32(prio, arg4); 12489 } 12490 return ret; 12491 #endif 12492 #ifdef TARGET_NR_mq_timedreceive_time64 12493 case TARGET_NR_mq_timedreceive_time64: 12494 { 12495 struct timespec ts; 12496 unsigned int prio; 12497 12498 p = lock_user(VERIFY_READ, arg2, arg3, 1); 12499 if (arg5 != 0) { 12500 if (target_to_host_timespec64(&ts, arg5)) { 12501 return -TARGET_EFAULT; 12502 } 12503 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12504 &prio, &ts)); 12505 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) { 12506 return -TARGET_EFAULT; 12507 } 12508 } else { 12509 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 12510 &prio, NULL)); 12511 } 12512 unlock_user(p, arg2, arg3); 12513 if (arg4 != 0) { 12514 put_user_u32(prio, arg4); 12515 } 12516 } 12517 return ret; 12518 #endif 12519 12520 /* Not implemented for now... */ 12521 /* case TARGET_NR_mq_notify: */ 12522 /* break; */ 12523 12524 case TARGET_NR_mq_getsetattr: 12525 { 12526 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 12527 ret = 0; 12528 if (arg2 != 0) { 12529 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 12530 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in, 12531 &posix_mq_attr_out)); 12532 } else if (arg3 != 0) { 12533 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out)); 12534 } 12535 if (ret == 0 && arg3 != 0) { 12536 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 12537 } 12538 } 12539 return ret; 12540 #endif 12541 12542 #ifdef CONFIG_SPLICE 12543 #ifdef TARGET_NR_tee 12544 case TARGET_NR_tee: 12545 { 12546 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 12547 } 12548 return ret; 12549 #endif 12550 #ifdef TARGET_NR_splice 12551 case TARGET_NR_splice: 12552 { 12553 loff_t loff_in, loff_out; 12554 loff_t *ploff_in = NULL, *ploff_out = NULL; 12555 if (arg2) { 12556 if (get_user_u64(loff_in, arg2)) { 12557 return -TARGET_EFAULT; 12558 } 12559 ploff_in = &loff_in; 12560 } 12561 if (arg4) { 12562 if (get_user_u64(loff_out, arg4)) { 12563 return -TARGET_EFAULT; 12564 } 12565 ploff_out = &loff_out; 12566 } 12567 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 12568 if (arg2) { 12569 if (put_user_u64(loff_in, arg2)) { 12570 return -TARGET_EFAULT; 12571 } 12572 } 12573 if (arg4) { 12574 if (put_user_u64(loff_out, arg4)) { 12575 return -TARGET_EFAULT; 12576 } 12577 } 12578 } 12579 return ret; 12580 #endif 12581 #ifdef TARGET_NR_vmsplice 12582 case TARGET_NR_vmsplice: 12583 { 12584 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 12585 if (vec != NULL) { 12586 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 12587 unlock_iovec(vec, arg2, arg3, 0); 12588 } else { 12589 ret = -host_to_target_errno(errno); 12590 } 12591 } 12592 return ret; 12593 #endif 12594 #endif /* CONFIG_SPLICE */ 12595 #ifdef CONFIG_EVENTFD 12596 #if defined(TARGET_NR_eventfd) 12597 case TARGET_NR_eventfd: 12598 ret = get_errno(eventfd(arg1, 0)); 12599 if (ret >= 0) { 12600 fd_trans_register(ret, &target_eventfd_trans); 12601 } 12602 return ret; 12603 #endif 12604 #if defined(TARGET_NR_eventfd2) 12605 case TARGET_NR_eventfd2: 12606 { 12607 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)); 12608 if (arg2 & TARGET_O_NONBLOCK) { 12609 host_flags |= O_NONBLOCK; 12610 } 12611 if (arg2 & TARGET_O_CLOEXEC) { 12612 host_flags |= O_CLOEXEC; 12613 } 12614 ret = get_errno(eventfd(arg1, host_flags)); 12615 if (ret >= 0) { 12616 fd_trans_register(ret, &target_eventfd_trans); 12617 } 12618 return ret; 12619 } 12620 #endif 12621 #endif /* CONFIG_EVENTFD */ 12622 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 12623 case TARGET_NR_fallocate: 12624 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12625 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 12626 target_offset64(arg5, arg6))); 12627 #else 12628 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 12629 #endif 12630 return ret; 12631 #endif 12632 #if defined(CONFIG_SYNC_FILE_RANGE) 12633 #if defined(TARGET_NR_sync_file_range) 12634 case TARGET_NR_sync_file_range: 12635 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12636 #if defined(TARGET_MIPS) 12637 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12638 target_offset64(arg5, arg6), arg7)); 12639 #else 12640 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 12641 target_offset64(arg4, arg5), arg6)); 12642 #endif /* !TARGET_MIPS */ 12643 #else 12644 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 12645 #endif 12646 return ret; 12647 #endif 12648 #if defined(TARGET_NR_sync_file_range2) || \ 12649 defined(TARGET_NR_arm_sync_file_range) 12650 #if defined(TARGET_NR_sync_file_range2) 12651 case TARGET_NR_sync_file_range2: 12652 #endif 12653 #if defined(TARGET_NR_arm_sync_file_range) 12654 case TARGET_NR_arm_sync_file_range: 12655 #endif 12656 /* This is like sync_file_range but the arguments are reordered */ 12657 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) 12658 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 12659 target_offset64(arg5, arg6), arg2)); 12660 #else 12661 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 12662 #endif 12663 return ret; 12664 #endif 12665 #endif 12666 #if defined(TARGET_NR_signalfd4) 12667 case TARGET_NR_signalfd4: 12668 return do_signalfd4(arg1, arg2, arg4); 12669 #endif 12670 #if defined(TARGET_NR_signalfd) 12671 case TARGET_NR_signalfd: 12672 return do_signalfd4(arg1, arg2, 0); 12673 #endif 12674 #if defined(CONFIG_EPOLL) 12675 #if defined(TARGET_NR_epoll_create) 12676 case TARGET_NR_epoll_create: 12677 return get_errno(epoll_create(arg1)); 12678 #endif 12679 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12680 case TARGET_NR_epoll_create1: 12681 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl))); 12682 #endif 12683 #if defined(TARGET_NR_epoll_ctl) 12684 case TARGET_NR_epoll_ctl: 12685 { 12686 struct epoll_event ep; 12687 struct epoll_event *epp = 0; 12688 if (arg4) { 12689 if (arg2 != EPOLL_CTL_DEL) { 12690 struct target_epoll_event *target_ep; 12691 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12692 return -TARGET_EFAULT; 12693 } 12694 ep.events = tswap32(target_ep->events); 12695 /* 12696 * The epoll_data_t union is just opaque data to the kernel, 12697 * so we transfer all 64 bits across and need not worry what 12698 * actual data type it is. 12699 */ 12700 ep.data.u64 = tswap64(target_ep->data.u64); 12701 unlock_user_struct(target_ep, arg4, 0); 12702 } 12703 /* 12704 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a 12705 * non-null pointer, even though this argument is ignored. 12706 * 12707 */ 12708 epp = &ep; 12709 } 12710 return get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12711 } 12712 #endif 12713 12714 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12715 #if defined(TARGET_NR_epoll_wait) 12716 case TARGET_NR_epoll_wait: 12717 #endif 12718 #if defined(TARGET_NR_epoll_pwait) 12719 case TARGET_NR_epoll_pwait: 12720 #endif 12721 { 12722 struct target_epoll_event *target_ep; 12723 struct epoll_event *ep; 12724 int epfd = arg1; 12725 int maxevents = arg3; 12726 int timeout = arg4; 12727 12728 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12729 return -TARGET_EINVAL; 12730 } 12731 12732 target_ep = lock_user(VERIFY_WRITE, arg2, 12733 maxevents * sizeof(struct target_epoll_event), 1); 12734 if (!target_ep) { 12735 return -TARGET_EFAULT; 12736 } 12737 12738 ep = g_try_new(struct epoll_event, maxevents); 12739 if (!ep) { 12740 unlock_user(target_ep, arg2, 0); 12741 return -TARGET_ENOMEM; 12742 } 12743 12744 switch (num) { 12745 #if defined(TARGET_NR_epoll_pwait) 12746 case TARGET_NR_epoll_pwait: 12747 { 12748 sigset_t *set = NULL; 12749 12750 if (arg5) { 12751 ret = process_sigsuspend_mask(&set, arg5, arg6); 12752 if (ret != 0) { 12753 break; 12754 } 12755 } 12756 12757 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12758 set, SIGSET_T_SIZE)); 12759 12760 if (set) { 12761 finish_sigsuspend_mask(ret); 12762 } 12763 break; 12764 } 12765 #endif 12766 #if defined(TARGET_NR_epoll_wait) 12767 case TARGET_NR_epoll_wait: 12768 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12769 NULL, 0)); 12770 break; 12771 #endif 12772 default: 12773 ret = -TARGET_ENOSYS; 12774 } 12775 if (!is_error(ret)) { 12776 int i; 12777 for (i = 0; i < ret; i++) { 12778 target_ep[i].events = tswap32(ep[i].events); 12779 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12780 } 12781 unlock_user(target_ep, arg2, 12782 ret * sizeof(struct target_epoll_event)); 12783 } else { 12784 unlock_user(target_ep, arg2, 0); 12785 } 12786 g_free(ep); 12787 return ret; 12788 } 12789 #endif 12790 #endif 12791 #ifdef TARGET_NR_prlimit64 12792 case TARGET_NR_prlimit64: 12793 { 12794 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12795 struct target_rlimit64 *target_rnew, *target_rold; 12796 struct host_rlimit64 rnew, rold, *rnewp = 0; 12797 int resource = target_to_host_resource(arg2); 12798 12799 if (arg3 && (resource != RLIMIT_AS && 12800 resource != RLIMIT_DATA && 12801 resource != RLIMIT_STACK)) { 12802 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12803 return -TARGET_EFAULT; 12804 } 12805 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12806 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12807 unlock_user_struct(target_rnew, arg3, 0); 12808 rnewp = &rnew; 12809 } 12810 12811 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12812 if (!is_error(ret) && arg4) { 12813 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12814 return -TARGET_EFAULT; 12815 } 12816 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12817 target_rold->rlim_max = tswap64(rold.rlim_max); 12818 unlock_user_struct(target_rold, arg4, 1); 12819 } 12820 return ret; 12821 } 12822 #endif 12823 #ifdef TARGET_NR_gethostname 12824 case TARGET_NR_gethostname: 12825 { 12826 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12827 if (name) { 12828 ret = get_errno(gethostname(name, arg2)); 12829 unlock_user(name, arg1, arg2); 12830 } else { 12831 ret = -TARGET_EFAULT; 12832 } 12833 return ret; 12834 } 12835 #endif 12836 #ifdef TARGET_NR_atomic_cmpxchg_32 12837 case TARGET_NR_atomic_cmpxchg_32: 12838 { 12839 /* should use start_exclusive from main.c */ 12840 abi_ulong mem_value; 12841 if (get_user_u32(mem_value, arg6)) { 12842 target_siginfo_t info; 12843 info.si_signo = SIGSEGV; 12844 info.si_errno = 0; 12845 info.si_code = TARGET_SEGV_MAPERR; 12846 info._sifields._sigfault._addr = arg6; 12847 queue_signal(cpu_env, info.si_signo, QEMU_SI_FAULT, &info); 12848 ret = 0xdeadbeef; 12849 12850 } 12851 if (mem_value == arg2) 12852 put_user_u32(arg1, arg6); 12853 return mem_value; 12854 } 12855 #endif 12856 #ifdef TARGET_NR_atomic_barrier 12857 case TARGET_NR_atomic_barrier: 12858 /* Like the kernel implementation and the 12859 qemu arm barrier, no-op this? */ 12860 return 0; 12861 #endif 12862 12863 #ifdef TARGET_NR_timer_create 12864 case TARGET_NR_timer_create: 12865 { 12866 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12867 12868 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12869 12870 int clkid = arg1; 12871 int timer_index = next_free_host_timer(); 12872 12873 if (timer_index < 0) { 12874 ret = -TARGET_EAGAIN; 12875 } else { 12876 timer_t *phtimer = g_posix_timers + timer_index; 12877 12878 if (arg2) { 12879 phost_sevp = &host_sevp; 12880 ret = target_to_host_sigevent(phost_sevp, arg2); 12881 if (ret != 0) { 12882 free_host_timer_slot(timer_index); 12883 return ret; 12884 } 12885 } 12886 12887 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12888 if (ret) { 12889 free_host_timer_slot(timer_index); 12890 } else { 12891 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12892 timer_delete(*phtimer); 12893 free_host_timer_slot(timer_index); 12894 return -TARGET_EFAULT; 12895 } 12896 } 12897 } 12898 return ret; 12899 } 12900 #endif 12901 12902 #ifdef TARGET_NR_timer_settime 12903 case TARGET_NR_timer_settime: 12904 { 12905 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12906 * struct itimerspec * old_value */ 12907 target_timer_t timerid = get_timer_id(arg1); 12908 12909 if (timerid < 0) { 12910 ret = timerid; 12911 } else if (arg3 == 0) { 12912 ret = -TARGET_EINVAL; 12913 } else { 12914 timer_t htimer = g_posix_timers[timerid]; 12915 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12916 12917 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12918 return -TARGET_EFAULT; 12919 } 12920 ret = get_errno( 12921 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12922 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12923 return -TARGET_EFAULT; 12924 } 12925 } 12926 return ret; 12927 } 12928 #endif 12929 12930 #ifdef TARGET_NR_timer_settime64 12931 case TARGET_NR_timer_settime64: 12932 { 12933 target_timer_t timerid = get_timer_id(arg1); 12934 12935 if (timerid < 0) { 12936 ret = timerid; 12937 } else if (arg3 == 0) { 12938 ret = -TARGET_EINVAL; 12939 } else { 12940 timer_t htimer = g_posix_timers[timerid]; 12941 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12942 12943 if (target_to_host_itimerspec64(&hspec_new, arg3)) { 12944 return -TARGET_EFAULT; 12945 } 12946 ret = get_errno( 12947 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12948 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) { 12949 return -TARGET_EFAULT; 12950 } 12951 } 12952 return ret; 12953 } 12954 #endif 12955 12956 #ifdef TARGET_NR_timer_gettime 12957 case TARGET_NR_timer_gettime: 12958 { 12959 /* args: timer_t timerid, struct itimerspec *curr_value */ 12960 target_timer_t timerid = get_timer_id(arg1); 12961 12962 if (timerid < 0) { 12963 ret = timerid; 12964 } else if (!arg2) { 12965 ret = -TARGET_EFAULT; 12966 } else { 12967 timer_t htimer = g_posix_timers[timerid]; 12968 struct itimerspec hspec; 12969 ret = get_errno(timer_gettime(htimer, &hspec)); 12970 12971 if (host_to_target_itimerspec(arg2, &hspec)) { 12972 ret = -TARGET_EFAULT; 12973 } 12974 } 12975 return ret; 12976 } 12977 #endif 12978 12979 #ifdef TARGET_NR_timer_gettime64 12980 case TARGET_NR_timer_gettime64: 12981 { 12982 /* args: timer_t timerid, struct itimerspec64 *curr_value */ 12983 target_timer_t timerid = get_timer_id(arg1); 12984 12985 if (timerid < 0) { 12986 ret = timerid; 12987 } else if (!arg2) { 12988 ret = -TARGET_EFAULT; 12989 } else { 12990 timer_t htimer = g_posix_timers[timerid]; 12991 struct itimerspec hspec; 12992 ret = get_errno(timer_gettime(htimer, &hspec)); 12993 12994 if (host_to_target_itimerspec64(arg2, &hspec)) { 12995 ret = -TARGET_EFAULT; 12996 } 12997 } 12998 return ret; 12999 } 13000 #endif 13001 13002 #ifdef TARGET_NR_timer_getoverrun 13003 case TARGET_NR_timer_getoverrun: 13004 { 13005 /* args: timer_t timerid */ 13006 target_timer_t timerid = get_timer_id(arg1); 13007 13008 if (timerid < 0) { 13009 ret = timerid; 13010 } else { 13011 timer_t htimer = g_posix_timers[timerid]; 13012 ret = get_errno(timer_getoverrun(htimer)); 13013 } 13014 return ret; 13015 } 13016 #endif 13017 13018 #ifdef TARGET_NR_timer_delete 13019 case TARGET_NR_timer_delete: 13020 { 13021 /* args: timer_t timerid */ 13022 target_timer_t timerid = get_timer_id(arg1); 13023 13024 if (timerid < 0) { 13025 ret = timerid; 13026 } else { 13027 timer_t htimer = g_posix_timers[timerid]; 13028 ret = get_errno(timer_delete(htimer)); 13029 free_host_timer_slot(timerid); 13030 } 13031 return ret; 13032 } 13033 #endif 13034 13035 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 13036 case TARGET_NR_timerfd_create: 13037 return get_errno(timerfd_create(arg1, 13038 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 13039 #endif 13040 13041 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 13042 case TARGET_NR_timerfd_gettime: 13043 { 13044 struct itimerspec its_curr; 13045 13046 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13047 13048 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 13049 return -TARGET_EFAULT; 13050 } 13051 } 13052 return ret; 13053 #endif 13054 13055 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD) 13056 case TARGET_NR_timerfd_gettime64: 13057 { 13058 struct itimerspec its_curr; 13059 13060 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 13061 13062 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) { 13063 return -TARGET_EFAULT; 13064 } 13065 } 13066 return ret; 13067 #endif 13068 13069 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 13070 case TARGET_NR_timerfd_settime: 13071 { 13072 struct itimerspec its_new, its_old, *p_new; 13073 13074 if (arg3) { 13075 if (target_to_host_itimerspec(&its_new, arg3)) { 13076 return -TARGET_EFAULT; 13077 } 13078 p_new = &its_new; 13079 } else { 13080 p_new = NULL; 13081 } 13082 13083 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13084 13085 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 13086 return -TARGET_EFAULT; 13087 } 13088 } 13089 return ret; 13090 #endif 13091 13092 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD) 13093 case TARGET_NR_timerfd_settime64: 13094 { 13095 struct itimerspec its_new, its_old, *p_new; 13096 13097 if (arg3) { 13098 if (target_to_host_itimerspec64(&its_new, arg3)) { 13099 return -TARGET_EFAULT; 13100 } 13101 p_new = &its_new; 13102 } else { 13103 p_new = NULL; 13104 } 13105 13106 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 13107 13108 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) { 13109 return -TARGET_EFAULT; 13110 } 13111 } 13112 return ret; 13113 #endif 13114 13115 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 13116 case TARGET_NR_ioprio_get: 13117 return get_errno(ioprio_get(arg1, arg2)); 13118 #endif 13119 13120 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 13121 case TARGET_NR_ioprio_set: 13122 return get_errno(ioprio_set(arg1, arg2, arg3)); 13123 #endif 13124 13125 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 13126 case TARGET_NR_setns: 13127 return get_errno(setns(arg1, arg2)); 13128 #endif 13129 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 13130 case TARGET_NR_unshare: 13131 return get_errno(unshare(arg1)); 13132 #endif 13133 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 13134 case TARGET_NR_kcmp: 13135 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 13136 #endif 13137 #ifdef TARGET_NR_swapcontext 13138 case TARGET_NR_swapcontext: 13139 /* PowerPC specific. */ 13140 return do_swapcontext(cpu_env, arg1, arg2, arg3); 13141 #endif 13142 #ifdef TARGET_NR_memfd_create 13143 case TARGET_NR_memfd_create: 13144 p = lock_user_string(arg1); 13145 if (!p) { 13146 return -TARGET_EFAULT; 13147 } 13148 ret = get_errno(memfd_create(p, arg2)); 13149 fd_trans_unregister(ret); 13150 unlock_user(p, arg1, 0); 13151 return ret; 13152 #endif 13153 #if defined TARGET_NR_membarrier && defined __NR_membarrier 13154 case TARGET_NR_membarrier: 13155 return get_errno(membarrier(arg1, arg2)); 13156 #endif 13157 13158 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) 13159 case TARGET_NR_copy_file_range: 13160 { 13161 loff_t inoff, outoff; 13162 loff_t *pinoff = NULL, *poutoff = NULL; 13163 13164 if (arg2) { 13165 if (get_user_u64(inoff, arg2)) { 13166 return -TARGET_EFAULT; 13167 } 13168 pinoff = &inoff; 13169 } 13170 if (arg4) { 13171 if (get_user_u64(outoff, arg4)) { 13172 return -TARGET_EFAULT; 13173 } 13174 poutoff = &outoff; 13175 } 13176 /* Do not sign-extend the count parameter. */ 13177 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, 13178 (abi_ulong)arg5, arg6)); 13179 if (!is_error(ret) && ret > 0) { 13180 if (arg2) { 13181 if (put_user_u64(inoff, arg2)) { 13182 return -TARGET_EFAULT; 13183 } 13184 } 13185 if (arg4) { 13186 if (put_user_u64(outoff, arg4)) { 13187 return -TARGET_EFAULT; 13188 } 13189 } 13190 } 13191 } 13192 return ret; 13193 #endif 13194 13195 #if defined(TARGET_NR_pivot_root) 13196 case TARGET_NR_pivot_root: 13197 { 13198 void *p2; 13199 p = lock_user_string(arg1); /* new_root */ 13200 p2 = lock_user_string(arg2); /* put_old */ 13201 if (!p || !p2) { 13202 ret = -TARGET_EFAULT; 13203 } else { 13204 ret = get_errno(pivot_root(p, p2)); 13205 } 13206 unlock_user(p2, arg2, 0); 13207 unlock_user(p, arg1, 0); 13208 } 13209 return ret; 13210 #endif 13211 13212 default: 13213 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); 13214 return -TARGET_ENOSYS; 13215 } 13216 return ret; 13217 } 13218 13219 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1, 13220 abi_long arg2, abi_long arg3, abi_long arg4, 13221 abi_long arg5, abi_long arg6, abi_long arg7, 13222 abi_long arg8) 13223 { 13224 CPUState *cpu = env_cpu(cpu_env); 13225 abi_long ret; 13226 13227 #ifdef DEBUG_ERESTARTSYS 13228 /* Debug-only code for exercising the syscall-restart code paths 13229 * in the per-architecture cpu main loops: restart every syscall 13230 * the guest makes once before letting it through. 13231 */ 13232 { 13233 static bool flag; 13234 flag = !flag; 13235 if (flag) { 13236 return -QEMU_ERESTARTSYS; 13237 } 13238 } 13239 #endif 13240 13241 record_syscall_start(cpu, num, arg1, 13242 arg2, arg3, arg4, arg5, arg6, arg7, arg8); 13243 13244 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13245 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6); 13246 } 13247 13248 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4, 13249 arg5, arg6, arg7, arg8); 13250 13251 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { 13252 print_syscall_ret(cpu_env, num, ret, arg1, arg2, 13253 arg3, arg4, arg5, arg6); 13254 } 13255 13256 record_syscall_return(cpu, num, ret); 13257 return ret; 13258 } 13259