1 /* 2 * syscalls.h - Linux syscall interfaces (non-arch-specific) 3 * 4 * Copyright (c) 2004 Randy Dunlap 5 * Copyright (c) 2004 Open Source Development Labs 6 * 7 * This file is released under the GPLv2. 8 * See the file COPYING for more details. 9 */ 10 11 #ifndef _LINUX_SYSCALLS_H 12 #define _LINUX_SYSCALLS_H 13 14 struct epoll_event; 15 struct iattr; 16 struct inode; 17 struct iocb; 18 struct io_event; 19 struct iovec; 20 struct itimerspec; 21 struct itimerval; 22 struct kexec_segment; 23 struct linux_dirent; 24 struct linux_dirent64; 25 struct list_head; 26 struct mmap_arg_struct; 27 struct msgbuf; 28 struct user_msghdr; 29 struct mmsghdr; 30 struct msqid_ds; 31 struct new_utsname; 32 struct nfsctl_arg; 33 struct __old_kernel_stat; 34 struct oldold_utsname; 35 struct old_utsname; 36 struct pollfd; 37 struct rlimit; 38 struct rlimit64; 39 struct rusage; 40 struct sched_param; 41 struct sched_attr; 42 struct sel_arg_struct; 43 struct semaphore; 44 struct sembuf; 45 struct shmid_ds; 46 struct sockaddr; 47 struct stat; 48 struct stat64; 49 struct statfs; 50 struct statfs64; 51 struct statx; 52 struct __sysctl_args; 53 struct sysinfo; 54 struct timespec; 55 struct timeval; 56 struct timex; 57 struct timezone; 58 struct tms; 59 struct utimbuf; 60 struct mq_attr; 61 struct compat_stat; 62 struct compat_timeval; 63 struct robust_list_head; 64 struct getcpu_cache; 65 struct old_linux_dirent; 66 struct perf_event_attr; 67 struct file_handle; 68 struct sigaltstack; 69 union bpf_attr; 70 71 #include <linux/types.h> 72 #include <linux/aio_abi.h> 73 #include <linux/capability.h> 74 #include <linux/signal.h> 75 #include <linux/list.h> 76 #include <linux/bug.h> 77 #include <linux/sem.h> 78 #include <asm/siginfo.h> 79 #include <linux/unistd.h> 80 #include <linux/quota.h> 81 #include <linux/key.h> 82 #include <trace/syscall.h> 83 84 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 85 /* 86 * It may be useful for an architecture to override the definitions of the 87 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a 88 * different calling convention for syscalls. To allow for that, the prototypes 89 * for the sys_*() functions below will *not* be included if 90 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 91 */ 92 #include <asm/syscall_wrapper.h> 93 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 94 95 /* 96 * __MAP - apply a macro to syscall arguments 97 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to 98 * m(t1, a1), m(t2, a2), ..., m(tn, an) 99 * The first argument must be equal to the amount of type/name 100 * pairs given. Note that this list of pairs (i.e. the arguments 101 * of __MAP starting at the third one) is in the same format as 102 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n> 103 */ 104 #define __MAP0(m,...) 105 #define __MAP1(m,t,a,...) m(t,a) 106 #define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__) 107 #define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__) 108 #define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__) 109 #define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__) 110 #define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__) 111 #define __MAP(n,...) __MAP##n(__VA_ARGS__) 112 113 #define __SC_DECL(t, a) t a 114 #define __TYPE_AS(t, v) __same_type((__force t)0, v) 115 #define __TYPE_IS_L(t) (__TYPE_AS(t, 0L)) 116 #define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL)) 117 #define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL)) 118 #define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a 119 #define __SC_CAST(t, a) (__force t) a 120 #define __SC_ARGS(t, a) a 121 #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long)) 122 123 #ifdef CONFIG_FTRACE_SYSCALLS 124 #define __SC_STR_ADECL(t, a) #a 125 #define __SC_STR_TDECL(t, a) #t 126 127 extern struct trace_event_class event_class_syscall_enter; 128 extern struct trace_event_class event_class_syscall_exit; 129 extern struct trace_event_functions enter_syscall_print_funcs; 130 extern struct trace_event_functions exit_syscall_print_funcs; 131 132 #define SYSCALL_TRACE_ENTER_EVENT(sname) \ 133 static struct syscall_metadata __syscall_meta_##sname; \ 134 static struct trace_event_call __used \ 135 event_enter_##sname = { \ 136 .class = &event_class_syscall_enter, \ 137 { \ 138 .name = "sys_enter"#sname, \ 139 }, \ 140 .event.funcs = &enter_syscall_print_funcs, \ 141 .data = (void *)&__syscall_meta_##sname,\ 142 .flags = TRACE_EVENT_FL_CAP_ANY, \ 143 }; \ 144 static struct trace_event_call __used \ 145 __attribute__((section("_ftrace_events"))) \ 146 *__event_enter_##sname = &event_enter_##sname; 147 148 #define SYSCALL_TRACE_EXIT_EVENT(sname) \ 149 static struct syscall_metadata __syscall_meta_##sname; \ 150 static struct trace_event_call __used \ 151 event_exit_##sname = { \ 152 .class = &event_class_syscall_exit, \ 153 { \ 154 .name = "sys_exit"#sname, \ 155 }, \ 156 .event.funcs = &exit_syscall_print_funcs, \ 157 .data = (void *)&__syscall_meta_##sname,\ 158 .flags = TRACE_EVENT_FL_CAP_ANY, \ 159 }; \ 160 static struct trace_event_call __used \ 161 __attribute__((section("_ftrace_events"))) \ 162 *__event_exit_##sname = &event_exit_##sname; 163 164 #define SYSCALL_METADATA(sname, nb, ...) \ 165 static const char *types_##sname[] = { \ 166 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \ 167 }; \ 168 static const char *args_##sname[] = { \ 169 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \ 170 }; \ 171 SYSCALL_TRACE_ENTER_EVENT(sname); \ 172 SYSCALL_TRACE_EXIT_EVENT(sname); \ 173 static struct syscall_metadata __used \ 174 __syscall_meta_##sname = { \ 175 .name = "sys"#sname, \ 176 .syscall_nr = -1, /* Filled in at boot */ \ 177 .nb_args = nb, \ 178 .types = nb ? types_##sname : NULL, \ 179 .args = nb ? args_##sname : NULL, \ 180 .enter_event = &event_enter_##sname, \ 181 .exit_event = &event_exit_##sname, \ 182 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \ 183 }; \ 184 static struct syscall_metadata __used \ 185 __attribute__((section("__syscalls_metadata"))) \ 186 *__p_syscall_meta_##sname = &__syscall_meta_##sname; 187 188 static inline int is_syscall_trace_event(struct trace_event_call *tp_event) 189 { 190 return tp_event->class == &event_class_syscall_enter || 191 tp_event->class == &event_class_syscall_exit; 192 } 193 194 #else 195 #define SYSCALL_METADATA(sname, nb, ...) 196 197 static inline int is_syscall_trace_event(struct trace_event_call *tp_event) 198 { 199 return 0; 200 } 201 #endif 202 203 #ifndef SYSCALL_DEFINE0 204 #define SYSCALL_DEFINE0(sname) \ 205 SYSCALL_METADATA(_##sname, 0); \ 206 asmlinkage long sys_##sname(void); \ 207 ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \ 208 asmlinkage long sys_##sname(void) 209 #endif /* SYSCALL_DEFINE0 */ 210 211 #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 212 #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 213 #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) 214 #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) 215 #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 216 #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 217 218 #define SYSCALL_DEFINE_MAXARGS 6 219 220 #define SYSCALL_DEFINEx(x, sname, ...) \ 221 SYSCALL_METADATA(sname, x, __VA_ARGS__) \ 222 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) 223 224 #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__) 225 226 /* 227 * The asmlinkage stub is aliased to a function named __se_sys_*() which 228 * sign-extends 32-bit ints to longs whenever needed. The actual work is 229 * done within __do_sys_*(). 230 */ 231 #ifndef __SYSCALL_DEFINEx 232 #define __SYSCALL_DEFINEx(x, name, ...) \ 233 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ 234 __attribute__((alias(__stringify(__se_sys##name)))); \ 235 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ 236 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ 237 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ 238 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 239 { \ 240 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ 241 __MAP(x,__SC_TEST,__VA_ARGS__); \ 242 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ 243 return ret; \ 244 } \ 245 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 246 #endif /* __SYSCALL_DEFINEx */ 247 248 /* 249 * Called before coming back to user-mode. Returning to user-mode with an 250 * address limit different than USER_DS can allow to overwrite kernel memory. 251 */ 252 static inline void addr_limit_user_check(void) 253 { 254 #ifdef TIF_FSCHECK 255 if (!test_thread_flag(TIF_FSCHECK)) 256 return; 257 #endif 258 259 if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS), 260 "Invalid address limit on user-mode return")) 261 force_sig(SIGKILL, current); 262 263 #ifdef TIF_FSCHECK 264 clear_thread_flag(TIF_FSCHECK); 265 #endif 266 } 267 268 /* 269 * These syscall function prototypes are kept in the same order as 270 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below, 271 * followed by deprecated or obsolete system calls. 272 * 273 * Please note that these prototypes here are only provided for information 274 * purposes, for static analysis, and for linking from the syscall table. 275 * These functions should not be called elsewhere from kernel code. 276 * 277 * As the syscall calling convention may be different from the default 278 * for architectures overriding the syscall calling convention, do not 279 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 280 */ 281 #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 282 asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); 283 asmlinkage long sys_io_destroy(aio_context_t ctx); 284 asmlinkage long sys_io_submit(aio_context_t, long, 285 struct iocb __user * __user *); 286 asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, 287 struct io_event __user *result); 288 asmlinkage long sys_io_getevents(aio_context_t ctx_id, 289 long min_nr, 290 long nr, 291 struct io_event __user *events, 292 struct timespec __user *timeout); 293 294 /* fs/xattr.c */ 295 asmlinkage long sys_setxattr(const char __user *path, const char __user *name, 296 const void __user *value, size_t size, int flags); 297 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, 298 const void __user *value, size_t size, int flags); 299 asmlinkage long sys_fsetxattr(int fd, const char __user *name, 300 const void __user *value, size_t size, int flags); 301 asmlinkage long sys_getxattr(const char __user *path, const char __user *name, 302 void __user *value, size_t size); 303 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, 304 void __user *value, size_t size); 305 asmlinkage long sys_fgetxattr(int fd, const char __user *name, 306 void __user *value, size_t size); 307 asmlinkage long sys_listxattr(const char __user *path, char __user *list, 308 size_t size); 309 asmlinkage long sys_llistxattr(const char __user *path, char __user *list, 310 size_t size); 311 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); 312 asmlinkage long sys_removexattr(const char __user *path, 313 const char __user *name); 314 asmlinkage long sys_lremovexattr(const char __user *path, 315 const char __user *name); 316 asmlinkage long sys_fremovexattr(int fd, const char __user *name); 317 318 /* fs/dcache.c */ 319 asmlinkage long sys_getcwd(char __user *buf, unsigned long size); 320 321 /* fs/cookies.c */ 322 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); 323 324 /* fs/eventfd.c */ 325 asmlinkage long sys_eventfd2(unsigned int count, int flags); 326 327 /* fs/eventpoll.c */ 328 asmlinkage long sys_epoll_create1(int flags); 329 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, 330 struct epoll_event __user *event); 331 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, 332 int maxevents, int timeout, 333 const sigset_t __user *sigmask, 334 size_t sigsetsize); 335 336 /* fs/fcntl.c */ 337 asmlinkage long sys_dup(unsigned int fildes); 338 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); 339 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); 340 #if BITS_PER_LONG == 32 341 asmlinkage long sys_fcntl64(unsigned int fd, 342 unsigned int cmd, unsigned long arg); 343 #endif 344 345 /* fs/inotify_user.c */ 346 asmlinkage long sys_inotify_init1(int flags); 347 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, 348 u32 mask); 349 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); 350 351 /* fs/ioctl.c */ 352 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, 353 unsigned long arg); 354 355 /* fs/ioprio.c */ 356 asmlinkage long sys_ioprio_set(int which, int who, int ioprio); 357 asmlinkage long sys_ioprio_get(int which, int who); 358 359 /* fs/locks.c */ 360 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); 361 362 /* fs/namei.c */ 363 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, 364 unsigned dev); 365 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); 366 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); 367 asmlinkage long sys_symlinkat(const char __user * oldname, 368 int newdfd, const char __user * newname); 369 asmlinkage long sys_linkat(int olddfd, const char __user *oldname, 370 int newdfd, const char __user *newname, int flags); 371 asmlinkage long sys_renameat(int olddfd, const char __user * oldname, 372 int newdfd, const char __user * newname); 373 374 /* fs/namespace.c */ 375 asmlinkage long sys_umount(char __user *name, int flags); 376 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, 377 char __user *type, unsigned long flags, 378 void __user *data); 379 asmlinkage long sys_pivot_root(const char __user *new_root, 380 const char __user *put_old); 381 382 /* fs/nfsctl.c */ 383 384 /* fs/open.c */ 385 asmlinkage long sys_statfs(const char __user * path, 386 struct statfs __user *buf); 387 asmlinkage long sys_statfs64(const char __user *path, size_t sz, 388 struct statfs64 __user *buf); 389 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); 390 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, 391 struct statfs64 __user *buf); 392 asmlinkage long sys_truncate(const char __user *path, long length); 393 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); 394 #if BITS_PER_LONG == 32 395 asmlinkage long sys_truncate64(const char __user *path, loff_t length); 396 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); 397 #endif 398 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); 399 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); 400 asmlinkage long sys_chdir(const char __user *filename); 401 asmlinkage long sys_fchdir(unsigned int fd); 402 asmlinkage long sys_chroot(const char __user *filename); 403 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); 404 asmlinkage long sys_fchmodat(int dfd, const char __user * filename, 405 umode_t mode); 406 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, 407 gid_t group, int flag); 408 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); 409 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, 410 umode_t mode); 411 asmlinkage long sys_close(unsigned int fd); 412 asmlinkage long sys_vhangup(void); 413 414 /* fs/pipe.c */ 415 asmlinkage long sys_pipe2(int __user *fildes, int flags); 416 417 /* fs/quota.c */ 418 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, 419 qid_t id, void __user *addr); 420 421 /* fs/readdir.c */ 422 asmlinkage long sys_getdents64(unsigned int fd, 423 struct linux_dirent64 __user *dirent, 424 unsigned int count); 425 426 /* fs/read_write.c */ 427 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, 428 unsigned long offset_low, loff_t __user *result, 429 unsigned int whence); 430 asmlinkage long sys_lseek(unsigned int fd, off_t offset, 431 unsigned int whence); 432 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); 433 asmlinkage long sys_write(unsigned int fd, const char __user *buf, 434 size_t count); 435 asmlinkage long sys_readv(unsigned long fd, 436 const struct iovec __user *vec, 437 unsigned long vlen); 438 asmlinkage long sys_writev(unsigned long fd, 439 const struct iovec __user *vec, 440 unsigned long vlen); 441 asmlinkage long sys_pread64(unsigned int fd, char __user *buf, 442 size_t count, loff_t pos); 443 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, 444 size_t count, loff_t pos); 445 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, 446 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 447 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, 448 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 449 450 /* fs/sendfile.c */ 451 asmlinkage long sys_sendfile64(int out_fd, int in_fd, 452 loff_t __user *offset, size_t count); 453 454 /* fs/select.c */ 455 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, 456 fd_set __user *, struct timespec __user *, 457 void __user *); 458 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, 459 struct timespec __user *, const sigset_t __user *, 460 size_t); 461 462 /* fs/signalfd.c */ 463 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); 464 465 /* fs/splice.c */ 466 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, 467 unsigned long nr_segs, unsigned int flags); 468 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, 469 int fd_out, loff_t __user *off_out, 470 size_t len, unsigned int flags); 471 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); 472 473 /* fs/stat.c */ 474 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, 475 int bufsiz); 476 asmlinkage long sys_newfstatat(int dfd, const char __user *filename, 477 struct stat __user *statbuf, int flag); 478 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); 479 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 480 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); 481 asmlinkage long sys_fstatat64(int dfd, const char __user *filename, 482 struct stat64 __user *statbuf, int flag); 483 #endif 484 485 /* fs/sync.c */ 486 asmlinkage long sys_sync(void); 487 asmlinkage long sys_fsync(unsigned int fd); 488 asmlinkage long sys_fdatasync(unsigned int fd); 489 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, 490 loff_t offset, loff_t nbytes); 491 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 492 unsigned int flags); 493 494 /* fs/timerfd.c */ 495 asmlinkage long sys_timerfd_create(int clockid, int flags); 496 asmlinkage long sys_timerfd_settime(int ufd, int flags, 497 const struct itimerspec __user *utmr, 498 struct itimerspec __user *otmr); 499 asmlinkage long sys_timerfd_gettime(int ufd, struct itimerspec __user *otmr); 500 501 /* fs/utimes.c */ 502 asmlinkage long sys_utimensat(int dfd, const char __user *filename, 503 struct timespec __user *utimes, int flags); 504 505 /* kernel/acct.c */ 506 asmlinkage long sys_acct(const char __user *name); 507 508 /* kernel/capability.c */ 509 asmlinkage long sys_capget(cap_user_header_t header, 510 cap_user_data_t dataptr); 511 asmlinkage long sys_capset(cap_user_header_t header, 512 const cap_user_data_t data); 513 514 /* kernel/exec_domain.c */ 515 asmlinkage long sys_personality(unsigned int personality); 516 517 /* kernel/exit.c */ 518 asmlinkage long sys_exit(int error_code); 519 asmlinkage long sys_exit_group(int error_code); 520 asmlinkage long sys_waitid(int which, pid_t pid, 521 struct siginfo __user *infop, 522 int options, struct rusage __user *ru); 523 524 /* kernel/fork.c */ 525 asmlinkage long sys_set_tid_address(int __user *tidptr); 526 asmlinkage long sys_unshare(unsigned long unshare_flags); 527 528 /* kernel/futex.c */ 529 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, 530 struct timespec __user *utime, u32 __user *uaddr2, 531 u32 val3); 532 asmlinkage long sys_get_robust_list(int pid, 533 struct robust_list_head __user * __user *head_ptr, 534 size_t __user *len_ptr); 535 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, 536 size_t len); 537 538 /* kernel/hrtimer.c */ 539 asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp); 540 541 /* kernel/itimer.c */ 542 asmlinkage long sys_getitimer(int which, struct itimerval __user *value); 543 asmlinkage long sys_setitimer(int which, 544 struct itimerval __user *value, 545 struct itimerval __user *ovalue); 546 547 /* kernel/kexec.c */ 548 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, 549 struct kexec_segment __user *segments, 550 unsigned long flags); 551 552 /* kernel/module.c */ 553 asmlinkage long sys_init_module(void __user *umod, unsigned long len, 554 const char __user *uargs); 555 asmlinkage long sys_delete_module(const char __user *name_user, 556 unsigned int flags); 557 558 /* kernel/posix-timers.c */ 559 asmlinkage long sys_timer_create(clockid_t which_clock, 560 struct sigevent __user *timer_event_spec, 561 timer_t __user * created_timer_id); 562 asmlinkage long sys_timer_gettime(timer_t timer_id, 563 struct itimerspec __user *setting); 564 asmlinkage long sys_timer_getoverrun(timer_t timer_id); 565 asmlinkage long sys_timer_settime(timer_t timer_id, int flags, 566 const struct itimerspec __user *new_setting, 567 struct itimerspec __user *old_setting); 568 asmlinkage long sys_timer_delete(timer_t timer_id); 569 asmlinkage long sys_clock_settime(clockid_t which_clock, 570 const struct timespec __user *tp); 571 asmlinkage long sys_clock_gettime(clockid_t which_clock, 572 struct timespec __user *tp); 573 asmlinkage long sys_clock_getres(clockid_t which_clock, 574 struct timespec __user *tp); 575 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, 576 const struct timespec __user *rqtp, 577 struct timespec __user *rmtp); 578 579 /* kernel/printk.c */ 580 asmlinkage long sys_syslog(int type, char __user *buf, int len); 581 582 /* kernel/ptrace.c */ 583 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, 584 unsigned long data); 585 /* kernel/sched/core.c */ 586 587 asmlinkage long sys_sched_setparam(pid_t pid, 588 struct sched_param __user *param); 589 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, 590 struct sched_param __user *param); 591 asmlinkage long sys_sched_getscheduler(pid_t pid); 592 asmlinkage long sys_sched_getparam(pid_t pid, 593 struct sched_param __user *param); 594 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, 595 unsigned long __user *user_mask_ptr); 596 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, 597 unsigned long __user *user_mask_ptr); 598 asmlinkage long sys_sched_yield(void); 599 asmlinkage long sys_sched_get_priority_max(int policy); 600 asmlinkage long sys_sched_get_priority_min(int policy); 601 asmlinkage long sys_sched_rr_get_interval(pid_t pid, 602 struct timespec __user *interval); 603 604 /* kernel/signal.c */ 605 asmlinkage long sys_restart_syscall(void); 606 asmlinkage long sys_kill(pid_t pid, int sig); 607 asmlinkage long sys_tkill(pid_t pid, int sig); 608 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); 609 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, 610 struct sigaltstack __user *uoss); 611 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); 612 #ifndef CONFIG_ODD_RT_SIGACTION 613 asmlinkage long sys_rt_sigaction(int, 614 const struct sigaction __user *, 615 struct sigaction __user *, 616 size_t); 617 #endif 618 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, 619 sigset_t __user *oset, size_t sigsetsize); 620 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); 621 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, 622 siginfo_t __user *uinfo, 623 const struct timespec __user *uts, 624 size_t sigsetsize); 625 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); 626 627 /* kernel/sys.c */ 628 asmlinkage long sys_setpriority(int which, int who, int niceval); 629 asmlinkage long sys_getpriority(int which, int who); 630 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, 631 void __user *arg); 632 asmlinkage long sys_setregid(gid_t rgid, gid_t egid); 633 asmlinkage long sys_setgid(gid_t gid); 634 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); 635 asmlinkage long sys_setuid(uid_t uid); 636 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); 637 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); 638 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); 639 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); 640 asmlinkage long sys_setfsuid(uid_t uid); 641 asmlinkage long sys_setfsgid(gid_t gid); 642 asmlinkage long sys_times(struct tms __user *tbuf); 643 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); 644 asmlinkage long sys_getpgid(pid_t pid); 645 asmlinkage long sys_getsid(pid_t pid); 646 asmlinkage long sys_setsid(void); 647 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 648 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); 649 asmlinkage long sys_newuname(struct new_utsname __user *name); 650 asmlinkage long sys_sethostname(char __user *name, int len); 651 asmlinkage long sys_setdomainname(char __user *name, int len); 652 asmlinkage long sys_getrlimit(unsigned int resource, 653 struct rlimit __user *rlim); 654 asmlinkage long sys_setrlimit(unsigned int resource, 655 struct rlimit __user *rlim); 656 asmlinkage long sys_getrusage(int who, struct rusage __user *ru); 657 asmlinkage long sys_umask(int mask); 658 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, 659 unsigned long arg4, unsigned long arg5); 660 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); 661 662 /* kernel/time.c */ 663 asmlinkage long sys_gettimeofday(struct timeval __user *tv, 664 struct timezone __user *tz); 665 asmlinkage long sys_settimeofday(struct timeval __user *tv, 666 struct timezone __user *tz); 667 asmlinkage long sys_adjtimex(struct timex __user *txc_p); 668 669 /* kernel/timer.c */ 670 asmlinkage long sys_getpid(void); 671 asmlinkage long sys_getppid(void); 672 asmlinkage long sys_getuid(void); 673 asmlinkage long sys_geteuid(void); 674 asmlinkage long sys_getgid(void); 675 asmlinkage long sys_getegid(void); 676 asmlinkage long sys_gettid(void); 677 asmlinkage long sys_sysinfo(struct sysinfo __user *info); 678 679 /* ipc/mqueue.c */ 680 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); 681 asmlinkage long sys_mq_unlink(const char __user *name); 682 asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct timespec __user *abs_timeout); 683 asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct timespec __user *abs_timeout); 684 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); 685 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); 686 687 /* ipc/msg.c */ 688 asmlinkage long sys_msgget(key_t key, int msgflg); 689 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 690 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, 691 size_t msgsz, long msgtyp, int msgflg); 692 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, 693 size_t msgsz, int msgflg); 694 695 /* ipc/sem.c */ 696 asmlinkage long sys_semget(key_t key, int nsems, int semflg); 697 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); 698 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 699 unsigned nsops, 700 const struct timespec __user *timeout); 701 asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 702 unsigned nsops); 703 704 /* ipc/shm.c */ 705 asmlinkage long sys_shmget(key_t key, size_t size, int flag); 706 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 707 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); 708 asmlinkage long sys_shmdt(char __user *shmaddr); 709 710 /* net/socket.c */ 711 asmlinkage long sys_socket(int, int, int); 712 asmlinkage long sys_socketpair(int, int, int, int __user *); 713 asmlinkage long sys_bind(int, struct sockaddr __user *, int); 714 asmlinkage long sys_listen(int, int); 715 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); 716 asmlinkage long sys_connect(int, struct sockaddr __user *, int); 717 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); 718 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); 719 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, 720 struct sockaddr __user *, int); 721 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, 722 struct sockaddr __user *, int __user *); 723 asmlinkage long sys_setsockopt(int fd, int level, int optname, 724 char __user *optval, int optlen); 725 asmlinkage long sys_getsockopt(int fd, int level, int optname, 726 char __user *optval, int __user *optlen); 727 asmlinkage long sys_shutdown(int, int); 728 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 729 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 730 731 /* mm/filemap.c */ 732 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); 733 734 /* mm/nommu.c, also with MMU */ 735 asmlinkage long sys_brk(unsigned long brk); 736 asmlinkage long sys_munmap(unsigned long addr, size_t len); 737 asmlinkage long sys_mremap(unsigned long addr, 738 unsigned long old_len, unsigned long new_len, 739 unsigned long flags, unsigned long new_addr); 740 741 /* security/keys/keyctl.c */ 742 asmlinkage long sys_add_key(const char __user *_type, 743 const char __user *_description, 744 const void __user *_payload, 745 size_t plen, 746 key_serial_t destringid); 747 asmlinkage long sys_request_key(const char __user *_type, 748 const char __user *_description, 749 const char __user *_callout_info, 750 key_serial_t destringid); 751 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, 752 unsigned long arg4, unsigned long arg5); 753 754 /* arch/example/kernel/sys_example.c */ 755 #ifdef CONFIG_CLONE_BACKWARDS 756 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, 757 int __user *); 758 #else 759 #ifdef CONFIG_CLONE_BACKWARDS3 760 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, 761 int __user *, unsigned long); 762 #else 763 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, 764 int __user *, unsigned long); 765 #endif 766 #endif 767 asmlinkage long sys_execve(const char __user *filename, 768 const char __user *const __user *argv, 769 const char __user *const __user *envp); 770 771 /* mm/fadvise.c */ 772 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 773 774 /* mm/, CONFIG_MMU only */ 775 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); 776 asmlinkage long sys_swapoff(const char __user *specialfile); 777 asmlinkage long sys_mprotect(unsigned long start, size_t len, 778 unsigned long prot); 779 asmlinkage long sys_msync(unsigned long start, size_t len, int flags); 780 asmlinkage long sys_mlock(unsigned long start, size_t len); 781 asmlinkage long sys_munlock(unsigned long start, size_t len); 782 asmlinkage long sys_mlockall(int flags); 783 asmlinkage long sys_munlockall(void); 784 asmlinkage long sys_mincore(unsigned long start, size_t len, 785 unsigned char __user * vec); 786 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); 787 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, 788 unsigned long prot, unsigned long pgoff, 789 unsigned long flags); 790 asmlinkage long sys_mbind(unsigned long start, unsigned long len, 791 unsigned long mode, 792 const unsigned long __user *nmask, 793 unsigned long maxnode, 794 unsigned flags); 795 asmlinkage long sys_get_mempolicy(int __user *policy, 796 unsigned long __user *nmask, 797 unsigned long maxnode, 798 unsigned long addr, unsigned long flags); 799 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, 800 unsigned long maxnode); 801 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, 802 const unsigned long __user *from, 803 const unsigned long __user *to); 804 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, 805 const void __user * __user *pages, 806 const int __user *nodes, 807 int __user *status, 808 int flags); 809 810 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, 811 siginfo_t __user *uinfo); 812 asmlinkage long sys_perf_event_open( 813 struct perf_event_attr __user *attr_uptr, 814 pid_t pid, int cpu, int group_fd, unsigned long flags); 815 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); 816 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, 817 unsigned int vlen, unsigned flags, 818 struct timespec __user *timeout); 819 820 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, 821 int options, struct rusage __user *ru); 822 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, 823 const struct rlimit64 __user *new_rlim, 824 struct rlimit64 __user *old_rlim); 825 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); 826 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, 827 u64 mask, int fd, 828 const char __user *pathname); 829 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, 830 struct file_handle __user *handle, 831 int __user *mnt_id, int flag); 832 asmlinkage long sys_open_by_handle_at(int mountdirfd, 833 struct file_handle __user *handle, 834 int flags); 835 asmlinkage long sys_clock_adjtime(clockid_t which_clock, 836 struct timex __user *tx); 837 asmlinkage long sys_syncfs(int fd); 838 asmlinkage long sys_setns(int fd, int nstype); 839 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, 840 unsigned int vlen, unsigned flags); 841 asmlinkage long sys_process_vm_readv(pid_t pid, 842 const struct iovec __user *lvec, 843 unsigned long liovcnt, 844 const struct iovec __user *rvec, 845 unsigned long riovcnt, 846 unsigned long flags); 847 asmlinkage long sys_process_vm_writev(pid_t pid, 848 const struct iovec __user *lvec, 849 unsigned long liovcnt, 850 const struct iovec __user *rvec, 851 unsigned long riovcnt, 852 unsigned long flags); 853 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, 854 unsigned long idx1, unsigned long idx2); 855 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); 856 asmlinkage long sys_sched_setattr(pid_t pid, 857 struct sched_attr __user *attr, 858 unsigned int flags); 859 asmlinkage long sys_sched_getattr(pid_t pid, 860 struct sched_attr __user *attr, 861 unsigned int size, 862 unsigned int flags); 863 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, 864 int newdfd, const char __user *newname, 865 unsigned int flags); 866 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, 867 const char __user *uargs); 868 asmlinkage long sys_getrandom(char __user *buf, size_t count, 869 unsigned int flags); 870 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); 871 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); 872 asmlinkage long sys_execveat(int dfd, const char __user *filename, 873 const char __user *const __user *argv, 874 const char __user *const __user *envp, int flags); 875 asmlinkage long sys_userfaultfd(int flags); 876 asmlinkage long sys_membarrier(int cmd, int flags); 877 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); 878 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, 879 int fd_out, loff_t __user *off_out, 880 size_t len, unsigned int flags); 881 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, 882 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 883 rwf_t flags); 884 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, 885 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 886 rwf_t flags); 887 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, 888 unsigned long prot, int pkey); 889 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); 890 asmlinkage long sys_pkey_free(int pkey); 891 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, 892 unsigned mask, struct statx __user *buffer); 893 894 895 /* 896 * Architecture-specific system calls 897 */ 898 899 /* arch/x86/kernel/ioport.c */ 900 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); 901 902 /* pciconfig: alpha, arm, arm64, ia64, sparc */ 903 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, 904 unsigned long off, unsigned long len, 905 void __user *buf); 906 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, 907 unsigned long off, unsigned long len, 908 void __user *buf); 909 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); 910 911 /* powerpc */ 912 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, 913 __u32 __user *ustatus); 914 asmlinkage long sys_spu_create(const char __user *name, 915 unsigned int flags, umode_t mode, int fd); 916 917 918 /* 919 * Deprecated system calls which are still defined in 920 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch 921 */ 922 923 /* __ARCH_WANT_SYSCALL_NO_AT */ 924 asmlinkage long sys_open(const char __user *filename, 925 int flags, umode_t mode); 926 asmlinkage long sys_link(const char __user *oldname, 927 const char __user *newname); 928 asmlinkage long sys_unlink(const char __user *pathname); 929 asmlinkage long sys_mknod(const char __user *filename, umode_t mode, 930 unsigned dev); 931 asmlinkage long sys_chmod(const char __user *filename, umode_t mode); 932 asmlinkage long sys_chown(const char __user *filename, 933 uid_t user, gid_t group); 934 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); 935 asmlinkage long sys_rmdir(const char __user *pathname); 936 asmlinkage long sys_lchown(const char __user *filename, 937 uid_t user, gid_t group); 938 asmlinkage long sys_access(const char __user *filename, int mode); 939 asmlinkage long sys_rename(const char __user *oldname, 940 const char __user *newname); 941 asmlinkage long sys_symlink(const char __user *old, const char __user *new); 942 asmlinkage long sys_utimes(char __user *filename, 943 struct timeval __user *utimes); 944 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 945 asmlinkage long sys_stat64(const char __user *filename, 946 struct stat64 __user *statbuf); 947 asmlinkage long sys_lstat64(const char __user *filename, 948 struct stat64 __user *statbuf); 949 #endif 950 951 /* __ARCH_WANT_SYSCALL_NO_FLAGS */ 952 asmlinkage long sys_pipe(int __user *fildes); 953 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); 954 asmlinkage long sys_epoll_create(int size); 955 asmlinkage long sys_inotify_init(void); 956 asmlinkage long sys_eventfd(unsigned int count); 957 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); 958 959 /* __ARCH_WANT_SYSCALL_OFF_T */ 960 asmlinkage long sys_sendfile(int out_fd, int in_fd, 961 off_t __user *offset, size_t count); 962 asmlinkage long sys_newstat(const char __user *filename, 963 struct stat __user *statbuf); 964 asmlinkage long sys_newlstat(const char __user *filename, 965 struct stat __user *statbuf); 966 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); 967 968 /* __ARCH_WANT_SYSCALL_DEPRECATED */ 969 asmlinkage long sys_alarm(unsigned int seconds); 970 asmlinkage long sys_getpgrp(void); 971 asmlinkage long sys_pause(void); 972 asmlinkage long sys_time(time_t __user *tloc); 973 asmlinkage long sys_utime(char __user *filename, 974 struct utimbuf __user *times); 975 asmlinkage long sys_creat(const char __user *pathname, umode_t mode); 976 asmlinkage long sys_getdents(unsigned int fd, 977 struct linux_dirent __user *dirent, 978 unsigned int count); 979 asmlinkage long sys_futimesat(int dfd, const char __user *filename, 980 struct timeval __user *utimes); 981 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, 982 fd_set __user *exp, struct timeval __user *tvp); 983 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, 984 int timeout); 985 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, 986 int maxevents, int timeout); 987 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); 988 asmlinkage long sys_vfork(void); 989 asmlinkage long sys_recv(int, void __user *, size_t, unsigned); 990 asmlinkage long sys_send(int, void __user *, size_t, unsigned); 991 asmlinkage long sys_bdflush(int func, long data); 992 asmlinkage long sys_oldumount(char __user *name); 993 asmlinkage long sys_uselib(const char __user *library); 994 asmlinkage long sys_sysctl(struct __sysctl_args __user *args); 995 asmlinkage long sys_sysfs(int option, 996 unsigned long arg1, unsigned long arg2); 997 asmlinkage long sys_fork(void); 998 999 /* obsolete: kernel/time/time.c */ 1000 asmlinkage long sys_stime(time_t __user *tptr); 1001 1002 /* obsolete: kernel/signal.c */ 1003 asmlinkage long sys_sigpending(old_sigset_t __user *uset); 1004 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, 1005 old_sigset_t __user *oset); 1006 #ifdef CONFIG_OLD_SIGSUSPEND 1007 asmlinkage long sys_sigsuspend(old_sigset_t mask); 1008 #endif 1009 1010 #ifdef CONFIG_OLD_SIGSUSPEND3 1011 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); 1012 #endif 1013 1014 #ifdef CONFIG_OLD_SIGACTION 1015 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, 1016 struct old_sigaction __user *); 1017 #endif 1018 asmlinkage long sys_sgetmask(void); 1019 asmlinkage long sys_ssetmask(int newmask); 1020 asmlinkage long sys_signal(int sig, __sighandler_t handler); 1021 1022 /* obsolete: kernel/sched/core.c */ 1023 asmlinkage long sys_nice(int increment); 1024 1025 /* obsolete: kernel/kexec_file.c */ 1026 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, 1027 unsigned long cmdline_len, 1028 const char __user *cmdline_ptr, 1029 unsigned long flags); 1030 1031 /* obsolete: kernel/exit.c */ 1032 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); 1033 1034 /* obsolete: kernel/uid16.c */ 1035 #ifdef CONFIG_HAVE_UID16 1036 asmlinkage long sys_chown16(const char __user *filename, 1037 old_uid_t user, old_gid_t group); 1038 asmlinkage long sys_lchown16(const char __user *filename, 1039 old_uid_t user, old_gid_t group); 1040 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); 1041 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); 1042 asmlinkage long sys_setgid16(old_gid_t gid); 1043 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); 1044 asmlinkage long sys_setuid16(old_uid_t uid); 1045 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); 1046 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, 1047 old_uid_t __user *euid, old_uid_t __user *suid); 1048 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); 1049 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, 1050 old_gid_t __user *egid, old_gid_t __user *sgid); 1051 asmlinkage long sys_setfsuid16(old_uid_t uid); 1052 asmlinkage long sys_setfsgid16(old_gid_t gid); 1053 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); 1054 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); 1055 asmlinkage long sys_getuid16(void); 1056 asmlinkage long sys_geteuid16(void); 1057 asmlinkage long sys_getgid16(void); 1058 asmlinkage long sys_getegid16(void); 1059 #endif 1060 1061 /* obsolete: net/socket.c */ 1062 asmlinkage long sys_socketcall(int call, unsigned long __user *args); 1063 1064 /* obsolete: fs/stat.c */ 1065 asmlinkage long sys_stat(const char __user *filename, 1066 struct __old_kernel_stat __user *statbuf); 1067 asmlinkage long sys_lstat(const char __user *filename, 1068 struct __old_kernel_stat __user *statbuf); 1069 asmlinkage long sys_fstat(unsigned int fd, 1070 struct __old_kernel_stat __user *statbuf); 1071 asmlinkage long sys_readlink(const char __user *path, 1072 char __user *buf, int bufsiz); 1073 1074 /* obsolete: fs/select.c */ 1075 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); 1076 1077 /* obsolete: fs/readdir.c */ 1078 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); 1079 1080 /* obsolete: kernel/sys.c */ 1081 asmlinkage long sys_gethostname(char __user *name, int len); 1082 asmlinkage long sys_uname(struct old_utsname __user *); 1083 asmlinkage long sys_olduname(struct oldold_utsname __user *); 1084 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT 1085 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); 1086 #endif 1087 1088 /* obsolete: ipc */ 1089 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, 1090 unsigned long third, void __user *ptr, long fifth); 1091 1092 /* obsolete: mm/ */ 1093 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, 1094 unsigned long prot, unsigned long flags, 1095 unsigned long fd, unsigned long pgoff); 1096 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); 1097 1098 1099 /* 1100 * Not a real system call, but a placeholder for syscalls which are 1101 * not implemented -- see kernel/sys_ni.c 1102 */ 1103 asmlinkage long sys_ni_syscall(void); 1104 1105 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 1106 1107 1108 /* 1109 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. 1110 * Instead, use one of the functions which work equivalently, such as 1111 * the ksys_xyzyyz() functions prototyped below. 1112 */ 1113 1114 int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type, 1115 unsigned long flags, void __user *data); 1116 int ksys_umount(char __user *name, int flags); 1117 int ksys_dup(unsigned int fildes); 1118 int ksys_chroot(const char __user *filename); 1119 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); 1120 int ksys_chdir(const char __user *filename); 1121 int ksys_fchmod(unsigned int fd, umode_t mode); 1122 int ksys_fchown(unsigned int fd, uid_t user, gid_t group); 1123 int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, 1124 unsigned int count); 1125 int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); 1126 off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence); 1127 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); 1128 void ksys_sync(void); 1129 int ksys_unshare(unsigned long unshare_flags); 1130 int ksys_setsid(void); 1131 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 1132 unsigned int flags); 1133 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, 1134 loff_t pos); 1135 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, 1136 size_t count, loff_t pos); 1137 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); 1138 #ifdef CONFIG_ADVISE_SYSCALLS 1139 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 1140 #else 1141 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, 1142 int advice) 1143 { 1144 return -EINVAL; 1145 } 1146 #endif 1147 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, 1148 unsigned long prot, unsigned long flags, 1149 unsigned long fd, unsigned long pgoff); 1150 ssize_t ksys_readahead(int fd, loff_t offset, size_t count); 1151 1152 /* 1153 * The following kernel syscall equivalents are just wrappers to fs-internal 1154 * functions. Therefore, provide stubs to be inlined at the callsites. 1155 */ 1156 extern long do_unlinkat(int dfd, struct filename *name); 1157 1158 static inline long ksys_unlink(const char __user *pathname) 1159 { 1160 return do_unlinkat(AT_FDCWD, getname(pathname)); 1161 } 1162 1163 extern long do_rmdir(int dfd, const char __user *pathname); 1164 1165 static inline long ksys_rmdir(const char __user *pathname) 1166 { 1167 return do_rmdir(AT_FDCWD, pathname); 1168 } 1169 1170 extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); 1171 1172 static inline long ksys_mkdir(const char __user *pathname, umode_t mode) 1173 { 1174 return do_mkdirat(AT_FDCWD, pathname, mode); 1175 } 1176 1177 extern long do_symlinkat(const char __user *oldname, int newdfd, 1178 const char __user *newname); 1179 1180 static inline long ksys_symlink(const char __user *oldname, 1181 const char __user *newname) 1182 { 1183 return do_symlinkat(oldname, AT_FDCWD, newname); 1184 } 1185 1186 extern long do_mknodat(int dfd, const char __user *filename, umode_t mode, 1187 unsigned int dev); 1188 1189 static inline long ksys_mknod(const char __user *filename, umode_t mode, 1190 unsigned int dev) 1191 { 1192 return do_mknodat(AT_FDCWD, filename, mode, dev); 1193 } 1194 1195 extern int do_linkat(int olddfd, const char __user *oldname, int newdfd, 1196 const char __user *newname, int flags); 1197 1198 static inline long ksys_link(const char __user *oldname, 1199 const char __user *newname) 1200 { 1201 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); 1202 } 1203 1204 extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode); 1205 1206 static inline int ksys_chmod(const char __user *filename, umode_t mode) 1207 { 1208 return do_fchmodat(AT_FDCWD, filename, mode); 1209 } 1210 1211 extern long do_faccessat(int dfd, const char __user *filename, int mode); 1212 1213 static inline long ksys_access(const char __user *filename, int mode) 1214 { 1215 return do_faccessat(AT_FDCWD, filename, mode); 1216 } 1217 1218 extern int do_fchownat(int dfd, const char __user *filename, uid_t user, 1219 gid_t group, int flag); 1220 1221 static inline long ksys_chown(const char __user *filename, uid_t user, 1222 gid_t group) 1223 { 1224 return do_fchownat(AT_FDCWD, filename, user, group, 0); 1225 } 1226 1227 static inline long ksys_lchown(const char __user *filename, uid_t user, 1228 gid_t group) 1229 { 1230 return do_fchownat(AT_FDCWD, filename, user, group, 1231 AT_SYMLINK_NOFOLLOW); 1232 } 1233 1234 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); 1235 1236 static inline long ksys_ftruncate(unsigned int fd, unsigned long length) 1237 { 1238 return do_sys_ftruncate(fd, length, 1); 1239 } 1240 1241 extern int __close_fd(struct files_struct *files, unsigned int fd); 1242 1243 /* 1244 * In contrast to sys_close(), this stub does not check whether the syscall 1245 * should or should not be restarted, but returns the raw error codes from 1246 * __close_fd(). 1247 */ 1248 static inline int ksys_close(unsigned int fd) 1249 { 1250 return __close_fd(current->files, fd); 1251 } 1252 1253 extern long do_sys_open(int dfd, const char __user *filename, int flags, 1254 umode_t mode); 1255 1256 static inline long ksys_open(const char __user *filename, int flags, 1257 umode_t mode) 1258 { 1259 if (force_o_largefile()) 1260 flags |= O_LARGEFILE; 1261 return do_sys_open(AT_FDCWD, filename, flags, mode); 1262 } 1263 1264 extern long do_sys_truncate(const char __user *pathname, loff_t length); 1265 1266 static inline long ksys_truncate(const char __user *pathname, loff_t length) 1267 { 1268 return do_sys_truncate(pathname, length); 1269 } 1270 1271 #endif 1272