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 __aio_sigset; 15 struct epoll_event; 16 struct iattr; 17 struct inode; 18 struct iocb; 19 struct io_event; 20 struct iovec; 21 struct itimerspec; 22 struct itimerval; 23 struct kexec_segment; 24 struct linux_dirent; 25 struct linux_dirent64; 26 struct list_head; 27 struct mmap_arg_struct; 28 struct msgbuf; 29 struct user_msghdr; 30 struct mmsghdr; 31 struct msqid_ds; 32 struct new_utsname; 33 struct nfsctl_arg; 34 struct __old_kernel_stat; 35 struct oldold_utsname; 36 struct old_utsname; 37 struct pollfd; 38 struct rlimit; 39 struct rlimit64; 40 struct rusage; 41 struct sched_param; 42 struct sched_attr; 43 struct sel_arg_struct; 44 struct semaphore; 45 struct sembuf; 46 struct shmid_ds; 47 struct sockaddr; 48 struct stat; 49 struct stat64; 50 struct statfs; 51 struct statfs64; 52 struct statx; 53 struct __sysctl_args; 54 struct sysinfo; 55 struct timespec; 56 struct timeval; 57 struct timex; 58 struct timezone; 59 struct tms; 60 struct utimbuf; 61 struct mq_attr; 62 struct compat_stat; 63 struct compat_timeval; 64 struct robust_list_head; 65 struct getcpu_cache; 66 struct old_linux_dirent; 67 struct perf_event_attr; 68 struct file_handle; 69 struct sigaltstack; 70 struct rseq; 71 union bpf_attr; 72 73 #include <linux/types.h> 74 #include <linux/aio_abi.h> 75 #include <linux/capability.h> 76 #include <linux/signal.h> 77 #include <linux/list.h> 78 #include <linux/bug.h> 79 #include <linux/sem.h> 80 #include <asm/siginfo.h> 81 #include <linux/unistd.h> 82 #include <linux/quota.h> 83 #include <linux/key.h> 84 #include <linux/personality.h> 85 #include <trace/syscall.h> 86 87 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 88 /* 89 * It may be useful for an architecture to override the definitions of the 90 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a 91 * different calling convention for syscalls. To allow for that, the prototypes 92 * for the sys_*() functions below will *not* be included if 93 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 94 */ 95 #include <asm/syscall_wrapper.h> 96 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 97 98 /* 99 * __MAP - apply a macro to syscall arguments 100 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to 101 * m(t1, a1), m(t2, a2), ..., m(tn, an) 102 * The first argument must be equal to the amount of type/name 103 * pairs given. Note that this list of pairs (i.e. the arguments 104 * of __MAP starting at the third one) is in the same format as 105 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n> 106 */ 107 #define __MAP0(m,...) 108 #define __MAP1(m,t,a,...) m(t,a) 109 #define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__) 110 #define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__) 111 #define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__) 112 #define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__) 113 #define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__) 114 #define __MAP(n,...) __MAP##n(__VA_ARGS__) 115 116 #define __SC_DECL(t, a) t a 117 #define __TYPE_AS(t, v) __same_type((__force t)0, v) 118 #define __TYPE_IS_L(t) (__TYPE_AS(t, 0L)) 119 #define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL)) 120 #define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL)) 121 #define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a 122 #define __SC_CAST(t, a) (__force t) a 123 #define __SC_ARGS(t, a) a 124 #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long)) 125 126 #ifdef CONFIG_FTRACE_SYSCALLS 127 #define __SC_STR_ADECL(t, a) #a 128 #define __SC_STR_TDECL(t, a) #t 129 130 extern struct trace_event_class event_class_syscall_enter; 131 extern struct trace_event_class event_class_syscall_exit; 132 extern struct trace_event_functions enter_syscall_print_funcs; 133 extern struct trace_event_functions exit_syscall_print_funcs; 134 135 #define SYSCALL_TRACE_ENTER_EVENT(sname) \ 136 static struct syscall_metadata __syscall_meta_##sname; \ 137 static struct trace_event_call __used \ 138 event_enter_##sname = { \ 139 .class = &event_class_syscall_enter, \ 140 { \ 141 .name = "sys_enter"#sname, \ 142 }, \ 143 .event.funcs = &enter_syscall_print_funcs, \ 144 .data = (void *)&__syscall_meta_##sname,\ 145 .flags = TRACE_EVENT_FL_CAP_ANY, \ 146 }; \ 147 static struct trace_event_call __used \ 148 __attribute__((section("_ftrace_events"))) \ 149 *__event_enter_##sname = &event_enter_##sname; 150 151 #define SYSCALL_TRACE_EXIT_EVENT(sname) \ 152 static struct syscall_metadata __syscall_meta_##sname; \ 153 static struct trace_event_call __used \ 154 event_exit_##sname = { \ 155 .class = &event_class_syscall_exit, \ 156 { \ 157 .name = "sys_exit"#sname, \ 158 }, \ 159 .event.funcs = &exit_syscall_print_funcs, \ 160 .data = (void *)&__syscall_meta_##sname,\ 161 .flags = TRACE_EVENT_FL_CAP_ANY, \ 162 }; \ 163 static struct trace_event_call __used \ 164 __attribute__((section("_ftrace_events"))) \ 165 *__event_exit_##sname = &event_exit_##sname; 166 167 #define SYSCALL_METADATA(sname, nb, ...) \ 168 static const char *types_##sname[] = { \ 169 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \ 170 }; \ 171 static const char *args_##sname[] = { \ 172 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \ 173 }; \ 174 SYSCALL_TRACE_ENTER_EVENT(sname); \ 175 SYSCALL_TRACE_EXIT_EVENT(sname); \ 176 static struct syscall_metadata __used \ 177 __syscall_meta_##sname = { \ 178 .name = "sys"#sname, \ 179 .syscall_nr = -1, /* Filled in at boot */ \ 180 .nb_args = nb, \ 181 .types = nb ? types_##sname : NULL, \ 182 .args = nb ? args_##sname : NULL, \ 183 .enter_event = &event_enter_##sname, \ 184 .exit_event = &event_exit_##sname, \ 185 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \ 186 }; \ 187 static struct syscall_metadata __used \ 188 __attribute__((section("__syscalls_metadata"))) \ 189 *__p_syscall_meta_##sname = &__syscall_meta_##sname; 190 191 static inline int is_syscall_trace_event(struct trace_event_call *tp_event) 192 { 193 return tp_event->class == &event_class_syscall_enter || 194 tp_event->class == &event_class_syscall_exit; 195 } 196 197 #else 198 #define SYSCALL_METADATA(sname, nb, ...) 199 200 static inline int is_syscall_trace_event(struct trace_event_call *tp_event) 201 { 202 return 0; 203 } 204 #endif 205 206 #ifndef SYSCALL_DEFINE0 207 #define SYSCALL_DEFINE0(sname) \ 208 SYSCALL_METADATA(_##sname, 0); \ 209 asmlinkage long sys_##sname(void); \ 210 ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \ 211 asmlinkage long sys_##sname(void) 212 #endif /* SYSCALL_DEFINE0 */ 213 214 #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 215 #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 216 #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) 217 #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) 218 #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 219 #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 220 221 #define SYSCALL_DEFINE_MAXARGS 6 222 223 #define SYSCALL_DEFINEx(x, sname, ...) \ 224 SYSCALL_METADATA(sname, x, __VA_ARGS__) \ 225 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) 226 227 #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__) 228 229 /* 230 * The asmlinkage stub is aliased to a function named __se_sys_*() which 231 * sign-extends 32-bit ints to longs whenever needed. The actual work is 232 * done within __do_sys_*(). 233 */ 234 #ifndef __SYSCALL_DEFINEx 235 #define __SYSCALL_DEFINEx(x, name, ...) \ 236 __diag_push(); \ 237 __diag_ignore(GCC, 8, "-Wattribute-alias", \ 238 "Type aliasing is used to sanitize syscall arguments");\ 239 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ 240 __attribute__((alias(__stringify(__se_sys##name)))); \ 241 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ 242 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ 243 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ 244 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 245 { \ 246 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ 247 __MAP(x,__SC_TEST,__VA_ARGS__); \ 248 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ 249 return ret; \ 250 } \ 251 __diag_pop(); \ 252 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 253 #endif /* __SYSCALL_DEFINEx */ 254 255 /* 256 * Called before coming back to user-mode. Returning to user-mode with an 257 * address limit different than USER_DS can allow to overwrite kernel memory. 258 */ 259 static inline void addr_limit_user_check(void) 260 { 261 #ifdef TIF_FSCHECK 262 if (!test_thread_flag(TIF_FSCHECK)) 263 return; 264 #endif 265 266 if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS), 267 "Invalid address limit on user-mode return")) 268 force_sig(SIGKILL, current); 269 270 #ifdef TIF_FSCHECK 271 clear_thread_flag(TIF_FSCHECK); 272 #endif 273 } 274 275 /* 276 * These syscall function prototypes are kept in the same order as 277 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below, 278 * followed by deprecated or obsolete system calls. 279 * 280 * Please note that these prototypes here are only provided for information 281 * purposes, for static analysis, and for linking from the syscall table. 282 * These functions should not be called elsewhere from kernel code. 283 * 284 * As the syscall calling convention may be different from the default 285 * for architectures overriding the syscall calling convention, do not 286 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 287 */ 288 #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 289 asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); 290 asmlinkage long sys_io_destroy(aio_context_t ctx); 291 asmlinkage long sys_io_submit(aio_context_t, long, 292 struct iocb __user * __user *); 293 asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, 294 struct io_event __user *result); 295 asmlinkage long sys_io_getevents(aio_context_t ctx_id, 296 long min_nr, 297 long nr, 298 struct io_event __user *events, 299 struct timespec __user *timeout); 300 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id, 301 long min_nr, 302 long nr, 303 struct io_event __user *events, 304 struct timespec __user *timeout, 305 const struct __aio_sigset *sig); 306 307 /* fs/xattr.c */ 308 asmlinkage long sys_setxattr(const char __user *path, const char __user *name, 309 const void __user *value, size_t size, int flags); 310 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, 311 const void __user *value, size_t size, int flags); 312 asmlinkage long sys_fsetxattr(int fd, const char __user *name, 313 const void __user *value, size_t size, int flags); 314 asmlinkage long sys_getxattr(const char __user *path, const char __user *name, 315 void __user *value, size_t size); 316 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, 317 void __user *value, size_t size); 318 asmlinkage long sys_fgetxattr(int fd, const char __user *name, 319 void __user *value, size_t size); 320 asmlinkage long sys_listxattr(const char __user *path, char __user *list, 321 size_t size); 322 asmlinkage long sys_llistxattr(const char __user *path, char __user *list, 323 size_t size); 324 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); 325 asmlinkage long sys_removexattr(const char __user *path, 326 const char __user *name); 327 asmlinkage long sys_lremovexattr(const char __user *path, 328 const char __user *name); 329 asmlinkage long sys_fremovexattr(int fd, const char __user *name); 330 331 /* fs/dcache.c */ 332 asmlinkage long sys_getcwd(char __user *buf, unsigned long size); 333 334 /* fs/cookies.c */ 335 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); 336 337 /* fs/eventfd.c */ 338 asmlinkage long sys_eventfd2(unsigned int count, int flags); 339 340 /* fs/eventpoll.c */ 341 asmlinkage long sys_epoll_create1(int flags); 342 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, 343 struct epoll_event __user *event); 344 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, 345 int maxevents, int timeout, 346 const sigset_t __user *sigmask, 347 size_t sigsetsize); 348 349 /* fs/fcntl.c */ 350 asmlinkage long sys_dup(unsigned int fildes); 351 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); 352 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); 353 #if BITS_PER_LONG == 32 354 asmlinkage long sys_fcntl64(unsigned int fd, 355 unsigned int cmd, unsigned long arg); 356 #endif 357 358 /* fs/inotify_user.c */ 359 asmlinkage long sys_inotify_init1(int flags); 360 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, 361 u32 mask); 362 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); 363 364 /* fs/ioctl.c */ 365 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, 366 unsigned long arg); 367 368 /* fs/ioprio.c */ 369 asmlinkage long sys_ioprio_set(int which, int who, int ioprio); 370 asmlinkage long sys_ioprio_get(int which, int who); 371 372 /* fs/locks.c */ 373 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); 374 375 /* fs/namei.c */ 376 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, 377 unsigned dev); 378 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); 379 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); 380 asmlinkage long sys_symlinkat(const char __user * oldname, 381 int newdfd, const char __user * newname); 382 asmlinkage long sys_linkat(int olddfd, const char __user *oldname, 383 int newdfd, const char __user *newname, int flags); 384 asmlinkage long sys_renameat(int olddfd, const char __user * oldname, 385 int newdfd, const char __user * newname); 386 387 /* fs/namespace.c */ 388 asmlinkage long sys_umount(char __user *name, int flags); 389 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, 390 char __user *type, unsigned long flags, 391 void __user *data); 392 asmlinkage long sys_pivot_root(const char __user *new_root, 393 const char __user *put_old); 394 395 /* fs/nfsctl.c */ 396 397 /* fs/open.c */ 398 asmlinkage long sys_statfs(const char __user * path, 399 struct statfs __user *buf); 400 asmlinkage long sys_statfs64(const char __user *path, size_t sz, 401 struct statfs64 __user *buf); 402 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); 403 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, 404 struct statfs64 __user *buf); 405 asmlinkage long sys_truncate(const char __user *path, long length); 406 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); 407 #if BITS_PER_LONG == 32 408 asmlinkage long sys_truncate64(const char __user *path, loff_t length); 409 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); 410 #endif 411 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); 412 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); 413 asmlinkage long sys_chdir(const char __user *filename); 414 asmlinkage long sys_fchdir(unsigned int fd); 415 asmlinkage long sys_chroot(const char __user *filename); 416 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); 417 asmlinkage long sys_fchmodat(int dfd, const char __user * filename, 418 umode_t mode); 419 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, 420 gid_t group, int flag); 421 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); 422 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, 423 umode_t mode); 424 asmlinkage long sys_close(unsigned int fd); 425 asmlinkage long sys_vhangup(void); 426 427 /* fs/pipe.c */ 428 asmlinkage long sys_pipe2(int __user *fildes, int flags); 429 430 /* fs/quota.c */ 431 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, 432 qid_t id, void __user *addr); 433 434 /* fs/readdir.c */ 435 asmlinkage long sys_getdents64(unsigned int fd, 436 struct linux_dirent64 __user *dirent, 437 unsigned int count); 438 439 /* fs/read_write.c */ 440 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, 441 unsigned long offset_low, loff_t __user *result, 442 unsigned int whence); 443 asmlinkage long sys_lseek(unsigned int fd, off_t offset, 444 unsigned int whence); 445 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); 446 asmlinkage long sys_write(unsigned int fd, const char __user *buf, 447 size_t count); 448 asmlinkage long sys_readv(unsigned long fd, 449 const struct iovec __user *vec, 450 unsigned long vlen); 451 asmlinkage long sys_writev(unsigned long fd, 452 const struct iovec __user *vec, 453 unsigned long vlen); 454 asmlinkage long sys_pread64(unsigned int fd, char __user *buf, 455 size_t count, loff_t pos); 456 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, 457 size_t count, loff_t pos); 458 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, 459 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 460 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, 461 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 462 463 /* fs/sendfile.c */ 464 asmlinkage long sys_sendfile64(int out_fd, int in_fd, 465 loff_t __user *offset, size_t count); 466 467 /* fs/select.c */ 468 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, 469 fd_set __user *, struct timespec __user *, 470 void __user *); 471 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, 472 struct timespec __user *, const sigset_t __user *, 473 size_t); 474 475 /* fs/signalfd.c */ 476 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); 477 478 /* fs/splice.c */ 479 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, 480 unsigned long nr_segs, unsigned int flags); 481 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, 482 int fd_out, loff_t __user *off_out, 483 size_t len, unsigned int flags); 484 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); 485 486 /* fs/stat.c */ 487 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, 488 int bufsiz); 489 asmlinkage long sys_newfstatat(int dfd, const char __user *filename, 490 struct stat __user *statbuf, int flag); 491 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); 492 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 493 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); 494 asmlinkage long sys_fstatat64(int dfd, const char __user *filename, 495 struct stat64 __user *statbuf, int flag); 496 #endif 497 498 /* fs/sync.c */ 499 asmlinkage long sys_sync(void); 500 asmlinkage long sys_fsync(unsigned int fd); 501 asmlinkage long sys_fdatasync(unsigned int fd); 502 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, 503 loff_t offset, loff_t nbytes); 504 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 505 unsigned int flags); 506 507 /* fs/timerfd.c */ 508 asmlinkage long sys_timerfd_create(int clockid, int flags); 509 asmlinkage long sys_timerfd_settime(int ufd, int flags, 510 const struct __kernel_itimerspec __user *utmr, 511 struct __kernel_itimerspec __user *otmr); 512 asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr); 513 514 /* fs/utimes.c */ 515 asmlinkage long sys_utimensat(int dfd, const char __user *filename, 516 struct timespec __user *utimes, int flags); 517 518 /* kernel/acct.c */ 519 asmlinkage long sys_acct(const char __user *name); 520 521 /* kernel/capability.c */ 522 asmlinkage long sys_capget(cap_user_header_t header, 523 cap_user_data_t dataptr); 524 asmlinkage long sys_capset(cap_user_header_t header, 525 const cap_user_data_t data); 526 527 /* kernel/exec_domain.c */ 528 asmlinkage long sys_personality(unsigned int personality); 529 530 /* kernel/exit.c */ 531 asmlinkage long sys_exit(int error_code); 532 asmlinkage long sys_exit_group(int error_code); 533 asmlinkage long sys_waitid(int which, pid_t pid, 534 struct siginfo __user *infop, 535 int options, struct rusage __user *ru); 536 537 /* kernel/fork.c */ 538 asmlinkage long sys_set_tid_address(int __user *tidptr); 539 asmlinkage long sys_unshare(unsigned long unshare_flags); 540 541 /* kernel/futex.c */ 542 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, 543 struct timespec __user *utime, u32 __user *uaddr2, 544 u32 val3); 545 asmlinkage long sys_get_robust_list(int pid, 546 struct robust_list_head __user * __user *head_ptr, 547 size_t __user *len_ptr); 548 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, 549 size_t len); 550 551 /* kernel/hrtimer.c */ 552 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, 553 struct __kernel_timespec __user *rmtp); 554 555 /* kernel/itimer.c */ 556 asmlinkage long sys_getitimer(int which, struct itimerval __user *value); 557 asmlinkage long sys_setitimer(int which, 558 struct itimerval __user *value, 559 struct itimerval __user *ovalue); 560 561 /* kernel/kexec.c */ 562 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, 563 struct kexec_segment __user *segments, 564 unsigned long flags); 565 566 /* kernel/module.c */ 567 asmlinkage long sys_init_module(void __user *umod, unsigned long len, 568 const char __user *uargs); 569 asmlinkage long sys_delete_module(const char __user *name_user, 570 unsigned int flags); 571 572 /* kernel/posix-timers.c */ 573 asmlinkage long sys_timer_create(clockid_t which_clock, 574 struct sigevent __user *timer_event_spec, 575 timer_t __user * created_timer_id); 576 asmlinkage long sys_timer_gettime(timer_t timer_id, 577 struct __kernel_itimerspec __user *setting); 578 asmlinkage long sys_timer_getoverrun(timer_t timer_id); 579 asmlinkage long sys_timer_settime(timer_t timer_id, int flags, 580 const struct __kernel_itimerspec __user *new_setting, 581 struct itimerspec __user *old_setting); 582 asmlinkage long sys_timer_delete(timer_t timer_id); 583 asmlinkage long sys_clock_settime(clockid_t which_clock, 584 const struct __kernel_timespec __user *tp); 585 asmlinkage long sys_clock_gettime(clockid_t which_clock, 586 struct __kernel_timespec __user *tp); 587 asmlinkage long sys_clock_getres(clockid_t which_clock, 588 struct __kernel_timespec __user *tp); 589 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, 590 const struct __kernel_timespec __user *rqtp, 591 struct __kernel_timespec __user *rmtp); 592 593 /* kernel/printk.c */ 594 asmlinkage long sys_syslog(int type, char __user *buf, int len); 595 596 /* kernel/ptrace.c */ 597 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, 598 unsigned long data); 599 /* kernel/sched/core.c */ 600 601 asmlinkage long sys_sched_setparam(pid_t pid, 602 struct sched_param __user *param); 603 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, 604 struct sched_param __user *param); 605 asmlinkage long sys_sched_getscheduler(pid_t pid); 606 asmlinkage long sys_sched_getparam(pid_t pid, 607 struct sched_param __user *param); 608 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, 609 unsigned long __user *user_mask_ptr); 610 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, 611 unsigned long __user *user_mask_ptr); 612 asmlinkage long sys_sched_yield(void); 613 asmlinkage long sys_sched_get_priority_max(int policy); 614 asmlinkage long sys_sched_get_priority_min(int policy); 615 asmlinkage long sys_sched_rr_get_interval(pid_t pid, 616 struct timespec __user *interval); 617 618 /* kernel/signal.c */ 619 asmlinkage long sys_restart_syscall(void); 620 asmlinkage long sys_kill(pid_t pid, int sig); 621 asmlinkage long sys_tkill(pid_t pid, int sig); 622 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); 623 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, 624 struct sigaltstack __user *uoss); 625 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); 626 #ifndef CONFIG_ODD_RT_SIGACTION 627 asmlinkage long sys_rt_sigaction(int, 628 const struct sigaction __user *, 629 struct sigaction __user *, 630 size_t); 631 #endif 632 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, 633 sigset_t __user *oset, size_t sigsetsize); 634 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); 635 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, 636 siginfo_t __user *uinfo, 637 const struct timespec __user *uts, 638 size_t sigsetsize); 639 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); 640 641 /* kernel/sys.c */ 642 asmlinkage long sys_setpriority(int which, int who, int niceval); 643 asmlinkage long sys_getpriority(int which, int who); 644 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, 645 void __user *arg); 646 asmlinkage long sys_setregid(gid_t rgid, gid_t egid); 647 asmlinkage long sys_setgid(gid_t gid); 648 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); 649 asmlinkage long sys_setuid(uid_t uid); 650 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); 651 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); 652 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); 653 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); 654 asmlinkage long sys_setfsuid(uid_t uid); 655 asmlinkage long sys_setfsgid(gid_t gid); 656 asmlinkage long sys_times(struct tms __user *tbuf); 657 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); 658 asmlinkage long sys_getpgid(pid_t pid); 659 asmlinkage long sys_getsid(pid_t pid); 660 asmlinkage long sys_setsid(void); 661 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 662 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); 663 asmlinkage long sys_newuname(struct new_utsname __user *name); 664 asmlinkage long sys_sethostname(char __user *name, int len); 665 asmlinkage long sys_setdomainname(char __user *name, int len); 666 asmlinkage long sys_getrlimit(unsigned int resource, 667 struct rlimit __user *rlim); 668 asmlinkage long sys_setrlimit(unsigned int resource, 669 struct rlimit __user *rlim); 670 asmlinkage long sys_getrusage(int who, struct rusage __user *ru); 671 asmlinkage long sys_umask(int mask); 672 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, 673 unsigned long arg4, unsigned long arg5); 674 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); 675 676 /* kernel/time.c */ 677 asmlinkage long sys_gettimeofday(struct timeval __user *tv, 678 struct timezone __user *tz); 679 asmlinkage long sys_settimeofday(struct timeval __user *tv, 680 struct timezone __user *tz); 681 asmlinkage long sys_adjtimex(struct timex __user *txc_p); 682 683 /* kernel/timer.c */ 684 asmlinkage long sys_getpid(void); 685 asmlinkage long sys_getppid(void); 686 asmlinkage long sys_getuid(void); 687 asmlinkage long sys_geteuid(void); 688 asmlinkage long sys_getgid(void); 689 asmlinkage long sys_getegid(void); 690 asmlinkage long sys_gettid(void); 691 asmlinkage long sys_sysinfo(struct sysinfo __user *info); 692 693 /* ipc/mqueue.c */ 694 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); 695 asmlinkage long sys_mq_unlink(const char __user *name); 696 asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct __kernel_timespec __user *abs_timeout); 697 asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct __kernel_timespec __user *abs_timeout); 698 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); 699 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); 700 701 /* ipc/msg.c */ 702 asmlinkage long sys_msgget(key_t key, int msgflg); 703 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 704 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, 705 size_t msgsz, long msgtyp, int msgflg); 706 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, 707 size_t msgsz, int msgflg); 708 709 /* ipc/sem.c */ 710 asmlinkage long sys_semget(key_t key, int nsems, int semflg); 711 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); 712 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 713 unsigned nsops, 714 const struct __kernel_timespec __user *timeout); 715 asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 716 unsigned nsops); 717 718 /* ipc/shm.c */ 719 asmlinkage long sys_shmget(key_t key, size_t size, int flag); 720 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 721 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); 722 asmlinkage long sys_shmdt(char __user *shmaddr); 723 724 /* net/socket.c */ 725 asmlinkage long sys_socket(int, int, int); 726 asmlinkage long sys_socketpair(int, int, int, int __user *); 727 asmlinkage long sys_bind(int, struct sockaddr __user *, int); 728 asmlinkage long sys_listen(int, int); 729 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); 730 asmlinkage long sys_connect(int, struct sockaddr __user *, int); 731 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); 732 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); 733 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, 734 struct sockaddr __user *, int); 735 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, 736 struct sockaddr __user *, int __user *); 737 asmlinkage long sys_setsockopt(int fd, int level, int optname, 738 char __user *optval, int optlen); 739 asmlinkage long sys_getsockopt(int fd, int level, int optname, 740 char __user *optval, int __user *optlen); 741 asmlinkage long sys_shutdown(int, int); 742 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 743 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 744 745 /* mm/filemap.c */ 746 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); 747 748 /* mm/nommu.c, also with MMU */ 749 asmlinkage long sys_brk(unsigned long brk); 750 asmlinkage long sys_munmap(unsigned long addr, size_t len); 751 asmlinkage long sys_mremap(unsigned long addr, 752 unsigned long old_len, unsigned long new_len, 753 unsigned long flags, unsigned long new_addr); 754 755 /* security/keys/keyctl.c */ 756 asmlinkage long sys_add_key(const char __user *_type, 757 const char __user *_description, 758 const void __user *_payload, 759 size_t plen, 760 key_serial_t destringid); 761 asmlinkage long sys_request_key(const char __user *_type, 762 const char __user *_description, 763 const char __user *_callout_info, 764 key_serial_t destringid); 765 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, 766 unsigned long arg4, unsigned long arg5); 767 768 /* arch/example/kernel/sys_example.c */ 769 #ifdef CONFIG_CLONE_BACKWARDS 770 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, 771 int __user *); 772 #else 773 #ifdef CONFIG_CLONE_BACKWARDS3 774 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, 775 int __user *, unsigned long); 776 #else 777 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, 778 int __user *, unsigned long); 779 #endif 780 #endif 781 asmlinkage long sys_execve(const char __user *filename, 782 const char __user *const __user *argv, 783 const char __user *const __user *envp); 784 785 /* mm/fadvise.c */ 786 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 787 788 /* mm/, CONFIG_MMU only */ 789 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); 790 asmlinkage long sys_swapoff(const char __user *specialfile); 791 asmlinkage long sys_mprotect(unsigned long start, size_t len, 792 unsigned long prot); 793 asmlinkage long sys_msync(unsigned long start, size_t len, int flags); 794 asmlinkage long sys_mlock(unsigned long start, size_t len); 795 asmlinkage long sys_munlock(unsigned long start, size_t len); 796 asmlinkage long sys_mlockall(int flags); 797 asmlinkage long sys_munlockall(void); 798 asmlinkage long sys_mincore(unsigned long start, size_t len, 799 unsigned char __user * vec); 800 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); 801 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, 802 unsigned long prot, unsigned long pgoff, 803 unsigned long flags); 804 asmlinkage long sys_mbind(unsigned long start, unsigned long len, 805 unsigned long mode, 806 const unsigned long __user *nmask, 807 unsigned long maxnode, 808 unsigned flags); 809 asmlinkage long sys_get_mempolicy(int __user *policy, 810 unsigned long __user *nmask, 811 unsigned long maxnode, 812 unsigned long addr, unsigned long flags); 813 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, 814 unsigned long maxnode); 815 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, 816 const unsigned long __user *from, 817 const unsigned long __user *to); 818 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, 819 const void __user * __user *pages, 820 const int __user *nodes, 821 int __user *status, 822 int flags); 823 824 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, 825 siginfo_t __user *uinfo); 826 asmlinkage long sys_perf_event_open( 827 struct perf_event_attr __user *attr_uptr, 828 pid_t pid, int cpu, int group_fd, unsigned long flags); 829 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); 830 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, 831 unsigned int vlen, unsigned flags, 832 struct timespec __user *timeout); 833 834 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, 835 int options, struct rusage __user *ru); 836 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, 837 const struct rlimit64 __user *new_rlim, 838 struct rlimit64 __user *old_rlim); 839 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); 840 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, 841 u64 mask, int fd, 842 const char __user *pathname); 843 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, 844 struct file_handle __user *handle, 845 int __user *mnt_id, int flag); 846 asmlinkage long sys_open_by_handle_at(int mountdirfd, 847 struct file_handle __user *handle, 848 int flags); 849 asmlinkage long sys_clock_adjtime(clockid_t which_clock, 850 struct timex __user *tx); 851 asmlinkage long sys_syncfs(int fd); 852 asmlinkage long sys_setns(int fd, int nstype); 853 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, 854 unsigned int vlen, unsigned flags); 855 asmlinkage long sys_process_vm_readv(pid_t pid, 856 const struct iovec __user *lvec, 857 unsigned long liovcnt, 858 const struct iovec __user *rvec, 859 unsigned long riovcnt, 860 unsigned long flags); 861 asmlinkage long sys_process_vm_writev(pid_t pid, 862 const struct iovec __user *lvec, 863 unsigned long liovcnt, 864 const struct iovec __user *rvec, 865 unsigned long riovcnt, 866 unsigned long flags); 867 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, 868 unsigned long idx1, unsigned long idx2); 869 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); 870 asmlinkage long sys_sched_setattr(pid_t pid, 871 struct sched_attr __user *attr, 872 unsigned int flags); 873 asmlinkage long sys_sched_getattr(pid_t pid, 874 struct sched_attr __user *attr, 875 unsigned int size, 876 unsigned int flags); 877 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, 878 int newdfd, const char __user *newname, 879 unsigned int flags); 880 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, 881 const char __user *uargs); 882 asmlinkage long sys_getrandom(char __user *buf, size_t count, 883 unsigned int flags); 884 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); 885 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); 886 asmlinkage long sys_execveat(int dfd, const char __user *filename, 887 const char __user *const __user *argv, 888 const char __user *const __user *envp, int flags); 889 asmlinkage long sys_userfaultfd(int flags); 890 asmlinkage long sys_membarrier(int cmd, int flags); 891 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); 892 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, 893 int fd_out, loff_t __user *off_out, 894 size_t len, unsigned int flags); 895 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, 896 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 897 rwf_t flags); 898 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, 899 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 900 rwf_t flags); 901 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, 902 unsigned long prot, int pkey); 903 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); 904 asmlinkage long sys_pkey_free(int pkey); 905 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, 906 unsigned mask, struct statx __user *buffer); 907 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, 908 int flags, uint32_t sig); 909 910 /* 911 * Architecture-specific system calls 912 */ 913 914 /* arch/x86/kernel/ioport.c */ 915 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); 916 917 /* pciconfig: alpha, arm, arm64, ia64, sparc */ 918 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, 919 unsigned long off, unsigned long len, 920 void __user *buf); 921 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, 922 unsigned long off, unsigned long len, 923 void __user *buf); 924 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); 925 926 /* powerpc */ 927 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, 928 __u32 __user *ustatus); 929 asmlinkage long sys_spu_create(const char __user *name, 930 unsigned int flags, umode_t mode, int fd); 931 932 933 /* 934 * Deprecated system calls which are still defined in 935 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch 936 */ 937 938 /* __ARCH_WANT_SYSCALL_NO_AT */ 939 asmlinkage long sys_open(const char __user *filename, 940 int flags, umode_t mode); 941 asmlinkage long sys_link(const char __user *oldname, 942 const char __user *newname); 943 asmlinkage long sys_unlink(const char __user *pathname); 944 asmlinkage long sys_mknod(const char __user *filename, umode_t mode, 945 unsigned dev); 946 asmlinkage long sys_chmod(const char __user *filename, umode_t mode); 947 asmlinkage long sys_chown(const char __user *filename, 948 uid_t user, gid_t group); 949 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); 950 asmlinkage long sys_rmdir(const char __user *pathname); 951 asmlinkage long sys_lchown(const char __user *filename, 952 uid_t user, gid_t group); 953 asmlinkage long sys_access(const char __user *filename, int mode); 954 asmlinkage long sys_rename(const char __user *oldname, 955 const char __user *newname); 956 asmlinkage long sys_symlink(const char __user *old, const char __user *new); 957 asmlinkage long sys_utimes(char __user *filename, 958 struct timeval __user *utimes); 959 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 960 asmlinkage long sys_stat64(const char __user *filename, 961 struct stat64 __user *statbuf); 962 asmlinkage long sys_lstat64(const char __user *filename, 963 struct stat64 __user *statbuf); 964 #endif 965 966 /* __ARCH_WANT_SYSCALL_NO_FLAGS */ 967 asmlinkage long sys_pipe(int __user *fildes); 968 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); 969 asmlinkage long sys_epoll_create(int size); 970 asmlinkage long sys_inotify_init(void); 971 asmlinkage long sys_eventfd(unsigned int count); 972 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); 973 974 /* __ARCH_WANT_SYSCALL_OFF_T */ 975 asmlinkage long sys_sendfile(int out_fd, int in_fd, 976 off_t __user *offset, size_t count); 977 asmlinkage long sys_newstat(const char __user *filename, 978 struct stat __user *statbuf); 979 asmlinkage long sys_newlstat(const char __user *filename, 980 struct stat __user *statbuf); 981 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); 982 983 /* __ARCH_WANT_SYSCALL_DEPRECATED */ 984 asmlinkage long sys_alarm(unsigned int seconds); 985 asmlinkage long sys_getpgrp(void); 986 asmlinkage long sys_pause(void); 987 asmlinkage long sys_time(time_t __user *tloc); 988 asmlinkage long sys_utime(char __user *filename, 989 struct utimbuf __user *times); 990 asmlinkage long sys_creat(const char __user *pathname, umode_t mode); 991 asmlinkage long sys_getdents(unsigned int fd, 992 struct linux_dirent __user *dirent, 993 unsigned int count); 994 asmlinkage long sys_futimesat(int dfd, const char __user *filename, 995 struct timeval __user *utimes); 996 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, 997 fd_set __user *exp, struct timeval __user *tvp); 998 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, 999 int timeout); 1000 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, 1001 int maxevents, int timeout); 1002 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); 1003 asmlinkage long sys_vfork(void); 1004 asmlinkage long sys_recv(int, void __user *, size_t, unsigned); 1005 asmlinkage long sys_send(int, void __user *, size_t, unsigned); 1006 asmlinkage long sys_bdflush(int func, long data); 1007 asmlinkage long sys_oldumount(char __user *name); 1008 asmlinkage long sys_uselib(const char __user *library); 1009 asmlinkage long sys_sysctl(struct __sysctl_args __user *args); 1010 asmlinkage long sys_sysfs(int option, 1011 unsigned long arg1, unsigned long arg2); 1012 asmlinkage long sys_fork(void); 1013 1014 /* obsolete: kernel/time/time.c */ 1015 asmlinkage long sys_stime(time_t __user *tptr); 1016 1017 /* obsolete: kernel/signal.c */ 1018 asmlinkage long sys_sigpending(old_sigset_t __user *uset); 1019 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, 1020 old_sigset_t __user *oset); 1021 #ifdef CONFIG_OLD_SIGSUSPEND 1022 asmlinkage long sys_sigsuspend(old_sigset_t mask); 1023 #endif 1024 1025 #ifdef CONFIG_OLD_SIGSUSPEND3 1026 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); 1027 #endif 1028 1029 #ifdef CONFIG_OLD_SIGACTION 1030 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, 1031 struct old_sigaction __user *); 1032 #endif 1033 asmlinkage long sys_sgetmask(void); 1034 asmlinkage long sys_ssetmask(int newmask); 1035 asmlinkage long sys_signal(int sig, __sighandler_t handler); 1036 1037 /* obsolete: kernel/sched/core.c */ 1038 asmlinkage long sys_nice(int increment); 1039 1040 /* obsolete: kernel/kexec_file.c */ 1041 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, 1042 unsigned long cmdline_len, 1043 const char __user *cmdline_ptr, 1044 unsigned long flags); 1045 1046 /* obsolete: kernel/exit.c */ 1047 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); 1048 1049 /* obsolete: kernel/uid16.c */ 1050 #ifdef CONFIG_HAVE_UID16 1051 asmlinkage long sys_chown16(const char __user *filename, 1052 old_uid_t user, old_gid_t group); 1053 asmlinkage long sys_lchown16(const char __user *filename, 1054 old_uid_t user, old_gid_t group); 1055 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); 1056 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); 1057 asmlinkage long sys_setgid16(old_gid_t gid); 1058 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); 1059 asmlinkage long sys_setuid16(old_uid_t uid); 1060 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); 1061 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, 1062 old_uid_t __user *euid, old_uid_t __user *suid); 1063 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); 1064 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, 1065 old_gid_t __user *egid, old_gid_t __user *sgid); 1066 asmlinkage long sys_setfsuid16(old_uid_t uid); 1067 asmlinkage long sys_setfsgid16(old_gid_t gid); 1068 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); 1069 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); 1070 asmlinkage long sys_getuid16(void); 1071 asmlinkage long sys_geteuid16(void); 1072 asmlinkage long sys_getgid16(void); 1073 asmlinkage long sys_getegid16(void); 1074 #endif 1075 1076 /* obsolete: net/socket.c */ 1077 asmlinkage long sys_socketcall(int call, unsigned long __user *args); 1078 1079 /* obsolete: fs/stat.c */ 1080 asmlinkage long sys_stat(const char __user *filename, 1081 struct __old_kernel_stat __user *statbuf); 1082 asmlinkage long sys_lstat(const char __user *filename, 1083 struct __old_kernel_stat __user *statbuf); 1084 asmlinkage long sys_fstat(unsigned int fd, 1085 struct __old_kernel_stat __user *statbuf); 1086 asmlinkage long sys_readlink(const char __user *path, 1087 char __user *buf, int bufsiz); 1088 1089 /* obsolete: fs/select.c */ 1090 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); 1091 1092 /* obsolete: fs/readdir.c */ 1093 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); 1094 1095 /* obsolete: kernel/sys.c */ 1096 asmlinkage long sys_gethostname(char __user *name, int len); 1097 asmlinkage long sys_uname(struct old_utsname __user *); 1098 asmlinkage long sys_olduname(struct oldold_utsname __user *); 1099 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT 1100 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); 1101 #endif 1102 1103 /* obsolete: ipc */ 1104 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, 1105 unsigned long third, void __user *ptr, long fifth); 1106 1107 /* obsolete: mm/ */ 1108 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, 1109 unsigned long prot, unsigned long flags, 1110 unsigned long fd, unsigned long pgoff); 1111 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); 1112 1113 1114 /* 1115 * Not a real system call, but a placeholder for syscalls which are 1116 * not implemented -- see kernel/sys_ni.c 1117 */ 1118 asmlinkage long sys_ni_syscall(void); 1119 1120 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 1121 1122 1123 /* 1124 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. 1125 * Instead, use one of the functions which work equivalently, such as 1126 * the ksys_xyzyyz() functions prototyped below. 1127 */ 1128 1129 int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type, 1130 unsigned long flags, void __user *data); 1131 int ksys_umount(char __user *name, int flags); 1132 int ksys_dup(unsigned int fildes); 1133 int ksys_chroot(const char __user *filename); 1134 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); 1135 int ksys_chdir(const char __user *filename); 1136 int ksys_fchmod(unsigned int fd, umode_t mode); 1137 int ksys_fchown(unsigned int fd, uid_t user, gid_t group); 1138 int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, 1139 unsigned int count); 1140 int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); 1141 off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence); 1142 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); 1143 void ksys_sync(void); 1144 int ksys_unshare(unsigned long unshare_flags); 1145 int ksys_setsid(void); 1146 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 1147 unsigned int flags); 1148 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, 1149 loff_t pos); 1150 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, 1151 size_t count, loff_t pos); 1152 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); 1153 #ifdef CONFIG_ADVISE_SYSCALLS 1154 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 1155 #else 1156 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, 1157 int advice) 1158 { 1159 return -EINVAL; 1160 } 1161 #endif 1162 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, 1163 unsigned long prot, unsigned long flags, 1164 unsigned long fd, unsigned long pgoff); 1165 ssize_t ksys_readahead(int fd, loff_t offset, size_t count); 1166 1167 /* 1168 * The following kernel syscall equivalents are just wrappers to fs-internal 1169 * functions. Therefore, provide stubs to be inlined at the callsites. 1170 */ 1171 extern long do_unlinkat(int dfd, struct filename *name); 1172 1173 static inline long ksys_unlink(const char __user *pathname) 1174 { 1175 return do_unlinkat(AT_FDCWD, getname(pathname)); 1176 } 1177 1178 extern long do_rmdir(int dfd, const char __user *pathname); 1179 1180 static inline long ksys_rmdir(const char __user *pathname) 1181 { 1182 return do_rmdir(AT_FDCWD, pathname); 1183 } 1184 1185 extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); 1186 1187 static inline long ksys_mkdir(const char __user *pathname, umode_t mode) 1188 { 1189 return do_mkdirat(AT_FDCWD, pathname, mode); 1190 } 1191 1192 extern long do_symlinkat(const char __user *oldname, int newdfd, 1193 const char __user *newname); 1194 1195 static inline long ksys_symlink(const char __user *oldname, 1196 const char __user *newname) 1197 { 1198 return do_symlinkat(oldname, AT_FDCWD, newname); 1199 } 1200 1201 extern long do_mknodat(int dfd, const char __user *filename, umode_t mode, 1202 unsigned int dev); 1203 1204 static inline long ksys_mknod(const char __user *filename, umode_t mode, 1205 unsigned int dev) 1206 { 1207 return do_mknodat(AT_FDCWD, filename, mode, dev); 1208 } 1209 1210 extern int do_linkat(int olddfd, const char __user *oldname, int newdfd, 1211 const char __user *newname, int flags); 1212 1213 static inline long ksys_link(const char __user *oldname, 1214 const char __user *newname) 1215 { 1216 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); 1217 } 1218 1219 extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode); 1220 1221 static inline int ksys_chmod(const char __user *filename, umode_t mode) 1222 { 1223 return do_fchmodat(AT_FDCWD, filename, mode); 1224 } 1225 1226 extern long do_faccessat(int dfd, const char __user *filename, int mode); 1227 1228 static inline long ksys_access(const char __user *filename, int mode) 1229 { 1230 return do_faccessat(AT_FDCWD, filename, mode); 1231 } 1232 1233 extern int do_fchownat(int dfd, const char __user *filename, uid_t user, 1234 gid_t group, int flag); 1235 1236 static inline long ksys_chown(const char __user *filename, uid_t user, 1237 gid_t group) 1238 { 1239 return do_fchownat(AT_FDCWD, filename, user, group, 0); 1240 } 1241 1242 static inline long ksys_lchown(const char __user *filename, uid_t user, 1243 gid_t group) 1244 { 1245 return do_fchownat(AT_FDCWD, filename, user, group, 1246 AT_SYMLINK_NOFOLLOW); 1247 } 1248 1249 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); 1250 1251 static inline long ksys_ftruncate(unsigned int fd, unsigned long length) 1252 { 1253 return do_sys_ftruncate(fd, length, 1); 1254 } 1255 1256 extern int __close_fd(struct files_struct *files, unsigned int fd); 1257 1258 /* 1259 * In contrast to sys_close(), this stub does not check whether the syscall 1260 * should or should not be restarted, but returns the raw error codes from 1261 * __close_fd(). 1262 */ 1263 static inline int ksys_close(unsigned int fd) 1264 { 1265 return __close_fd(current->files, fd); 1266 } 1267 1268 extern long do_sys_open(int dfd, const char __user *filename, int flags, 1269 umode_t mode); 1270 1271 static inline long ksys_open(const char __user *filename, int flags, 1272 umode_t mode) 1273 { 1274 if (force_o_largefile()) 1275 flags |= O_LARGEFILE; 1276 return do_sys_open(AT_FDCWD, filename, flags, mode); 1277 } 1278 1279 extern long do_sys_truncate(const char __user *pathname, loff_t length); 1280 1281 static inline long ksys_truncate(const char __user *pathname, loff_t length) 1282 { 1283 return do_sys_truncate(pathname, length); 1284 } 1285 1286 static inline unsigned int ksys_personality(unsigned int personality) 1287 { 1288 unsigned int old = current->personality; 1289 1290 if (personality != 0xffffffff) 1291 set_personality(personality); 1292 1293 return old; 1294 } 1295 1296 #endif 1297