1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * syscalls.h - Linux syscall interfaces (non-arch-specific) 4 * 5 * Copyright (c) 2004 Randy Dunlap 6 * Copyright (c) 2004 Open Source Development Labs 7 */ 8 9 #ifndef _LINUX_SYSCALLS_H 10 #define _LINUX_SYSCALLS_H 11 12 struct __aio_sigset; 13 struct epoll_event; 14 struct iattr; 15 struct inode; 16 struct iocb; 17 struct io_event; 18 struct iovec; 19 struct itimerspec; 20 struct itimerval; 21 struct kexec_segment; 22 struct linux_dirent; 23 struct linux_dirent64; 24 struct list_head; 25 struct mmap_arg_struct; 26 struct msgbuf; 27 struct user_msghdr; 28 struct mmsghdr; 29 struct msqid_ds; 30 struct new_utsname; 31 struct nfsctl_arg; 32 struct __old_kernel_stat; 33 struct oldold_utsname; 34 struct old_utsname; 35 struct pollfd; 36 struct rlimit; 37 struct rlimit64; 38 struct rusage; 39 struct sched_param; 40 struct sched_attr; 41 struct sel_arg_struct; 42 struct semaphore; 43 struct sembuf; 44 struct shmid_ds; 45 struct sockaddr; 46 struct stat; 47 struct stat64; 48 struct statfs; 49 struct statfs64; 50 struct statx; 51 struct __sysctl_args; 52 struct sysinfo; 53 struct timespec; 54 struct __kernel_old_timeval; 55 struct __kernel_timex; 56 struct timezone; 57 struct tms; 58 struct utimbuf; 59 struct mq_attr; 60 struct compat_stat; 61 struct old_timeval32; 62 struct robust_list_head; 63 struct getcpu_cache; 64 struct old_linux_dirent; 65 struct perf_event_attr; 66 struct file_handle; 67 struct sigaltstack; 68 struct rseq; 69 union bpf_attr; 70 struct io_uring_params; 71 struct clone_args; 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); 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 __kernel_timespec __user *timeout); 300 asmlinkage long sys_io_getevents_time32(__u32 ctx_id, 301 __s32 min_nr, 302 __s32 nr, 303 struct io_event __user *events, 304 struct old_timespec32 __user *timeout); 305 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id, 306 long min_nr, 307 long nr, 308 struct io_event __user *events, 309 struct __kernel_timespec __user *timeout, 310 const struct __aio_sigset *sig); 311 asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id, 312 long min_nr, 313 long nr, 314 struct io_event __user *events, 315 struct old_timespec32 __user *timeout, 316 const struct __aio_sigset *sig); 317 asmlinkage long sys_io_uring_setup(u32 entries, 318 struct io_uring_params __user *p); 319 asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit, 320 u32 min_complete, u32 flags, 321 const sigset_t __user *sig, size_t sigsz); 322 asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op, 323 void __user *arg, unsigned int nr_args); 324 325 /* fs/xattr.c */ 326 asmlinkage long sys_setxattr(const char __user *path, const char __user *name, 327 const void __user *value, size_t size, int flags); 328 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, 329 const void __user *value, size_t size, int flags); 330 asmlinkage long sys_fsetxattr(int fd, const char __user *name, 331 const void __user *value, size_t size, int flags); 332 asmlinkage long sys_getxattr(const char __user *path, const char __user *name, 333 void __user *value, size_t size); 334 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, 335 void __user *value, size_t size); 336 asmlinkage long sys_fgetxattr(int fd, const char __user *name, 337 void __user *value, size_t size); 338 asmlinkage long sys_listxattr(const char __user *path, char __user *list, 339 size_t size); 340 asmlinkage long sys_llistxattr(const char __user *path, char __user *list, 341 size_t size); 342 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); 343 asmlinkage long sys_removexattr(const char __user *path, 344 const char __user *name); 345 asmlinkage long sys_lremovexattr(const char __user *path, 346 const char __user *name); 347 asmlinkage long sys_fremovexattr(int fd, const char __user *name); 348 349 /* fs/dcache.c */ 350 asmlinkage long sys_getcwd(char __user *buf, unsigned long size); 351 352 /* fs/cookies.c */ 353 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); 354 355 /* fs/eventfd.c */ 356 asmlinkage long sys_eventfd2(unsigned int count, int flags); 357 358 /* fs/eventpoll.c */ 359 asmlinkage long sys_epoll_create1(int flags); 360 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, 361 struct epoll_event __user *event); 362 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, 363 int maxevents, int timeout, 364 const sigset_t __user *sigmask, 365 size_t sigsetsize); 366 367 /* fs/fcntl.c */ 368 asmlinkage long sys_dup(unsigned int fildes); 369 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); 370 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); 371 #if BITS_PER_LONG == 32 372 asmlinkage long sys_fcntl64(unsigned int fd, 373 unsigned int cmd, unsigned long arg); 374 #endif 375 376 /* fs/inotify_user.c */ 377 asmlinkage long sys_inotify_init1(int flags); 378 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, 379 u32 mask); 380 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); 381 382 /* fs/ioctl.c */ 383 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, 384 unsigned long arg); 385 386 /* fs/ioprio.c */ 387 asmlinkage long sys_ioprio_set(int which, int who, int ioprio); 388 asmlinkage long sys_ioprio_get(int which, int who); 389 390 /* fs/locks.c */ 391 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); 392 393 /* fs/namei.c */ 394 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, 395 unsigned dev); 396 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); 397 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); 398 asmlinkage long sys_symlinkat(const char __user * oldname, 399 int newdfd, const char __user * newname); 400 asmlinkage long sys_linkat(int olddfd, const char __user *oldname, 401 int newdfd, const char __user *newname, int flags); 402 asmlinkage long sys_renameat(int olddfd, const char __user * oldname, 403 int newdfd, const char __user * newname); 404 405 /* fs/namespace.c */ 406 asmlinkage long sys_umount(char __user *name, int flags); 407 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, 408 char __user *type, unsigned long flags, 409 void __user *data); 410 asmlinkage long sys_pivot_root(const char __user *new_root, 411 const char __user *put_old); 412 413 /* fs/nfsctl.c */ 414 415 /* fs/open.c */ 416 asmlinkage long sys_statfs(const char __user * path, 417 struct statfs __user *buf); 418 asmlinkage long sys_statfs64(const char __user *path, size_t sz, 419 struct statfs64 __user *buf); 420 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); 421 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, 422 struct statfs64 __user *buf); 423 asmlinkage long sys_truncate(const char __user *path, long length); 424 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); 425 #if BITS_PER_LONG == 32 426 asmlinkage long sys_truncate64(const char __user *path, loff_t length); 427 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); 428 #endif 429 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); 430 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); 431 asmlinkage long sys_chdir(const char __user *filename); 432 asmlinkage long sys_fchdir(unsigned int fd); 433 asmlinkage long sys_chroot(const char __user *filename); 434 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); 435 asmlinkage long sys_fchmodat(int dfd, const char __user * filename, 436 umode_t mode); 437 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, 438 gid_t group, int flag); 439 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); 440 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, 441 umode_t mode); 442 asmlinkage long sys_close(unsigned int fd); 443 asmlinkage long sys_vhangup(void); 444 445 /* fs/pipe.c */ 446 asmlinkage long sys_pipe2(int __user *fildes, int flags); 447 448 /* fs/quota.c */ 449 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, 450 qid_t id, void __user *addr); 451 452 /* fs/readdir.c */ 453 asmlinkage long sys_getdents64(unsigned int fd, 454 struct linux_dirent64 __user *dirent, 455 unsigned int count); 456 457 /* fs/read_write.c */ 458 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, 459 unsigned long offset_low, loff_t __user *result, 460 unsigned int whence); 461 asmlinkage long sys_lseek(unsigned int fd, off_t offset, 462 unsigned int whence); 463 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); 464 asmlinkage long sys_write(unsigned int fd, const char __user *buf, 465 size_t count); 466 asmlinkage long sys_readv(unsigned long fd, 467 const struct iovec __user *vec, 468 unsigned long vlen); 469 asmlinkage long sys_writev(unsigned long fd, 470 const struct iovec __user *vec, 471 unsigned long vlen); 472 asmlinkage long sys_pread64(unsigned int fd, char __user *buf, 473 size_t count, loff_t pos); 474 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, 475 size_t count, loff_t pos); 476 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, 477 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 478 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, 479 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 480 481 /* fs/sendfile.c */ 482 asmlinkage long sys_sendfile64(int out_fd, int in_fd, 483 loff_t __user *offset, size_t count); 484 485 /* fs/select.c */ 486 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, 487 fd_set __user *, struct __kernel_timespec __user *, 488 void __user *); 489 asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *, 490 fd_set __user *, struct old_timespec32 __user *, 491 void __user *); 492 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, 493 struct __kernel_timespec __user *, const sigset_t __user *, 494 size_t); 495 asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int, 496 struct old_timespec32 __user *, const sigset_t __user *, 497 size_t); 498 499 /* fs/signalfd.c */ 500 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); 501 502 /* fs/splice.c */ 503 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, 504 unsigned long nr_segs, unsigned int flags); 505 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, 506 int fd_out, loff_t __user *off_out, 507 size_t len, unsigned int flags); 508 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); 509 510 /* fs/stat.c */ 511 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, 512 int bufsiz); 513 asmlinkage long sys_newfstatat(int dfd, const char __user *filename, 514 struct stat __user *statbuf, int flag); 515 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); 516 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 517 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); 518 asmlinkage long sys_fstatat64(int dfd, const char __user *filename, 519 struct stat64 __user *statbuf, int flag); 520 #endif 521 522 /* fs/sync.c */ 523 asmlinkage long sys_sync(void); 524 asmlinkage long sys_fsync(unsigned int fd); 525 asmlinkage long sys_fdatasync(unsigned int fd); 526 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, 527 loff_t offset, loff_t nbytes); 528 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 529 unsigned int flags); 530 531 /* fs/timerfd.c */ 532 asmlinkage long sys_timerfd_create(int clockid, int flags); 533 asmlinkage long sys_timerfd_settime(int ufd, int flags, 534 const struct __kernel_itimerspec __user *utmr, 535 struct __kernel_itimerspec __user *otmr); 536 asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr); 537 asmlinkage long sys_timerfd_gettime32(int ufd, 538 struct old_itimerspec32 __user *otmr); 539 asmlinkage long sys_timerfd_settime32(int ufd, int flags, 540 const struct old_itimerspec32 __user *utmr, 541 struct old_itimerspec32 __user *otmr); 542 543 /* fs/utimes.c */ 544 asmlinkage long sys_utimensat(int dfd, const char __user *filename, 545 struct __kernel_timespec __user *utimes, 546 int flags); 547 asmlinkage long sys_utimensat_time32(unsigned int dfd, 548 const char __user *filename, 549 struct old_timespec32 __user *t, int flags); 550 551 /* kernel/acct.c */ 552 asmlinkage long sys_acct(const char __user *name); 553 554 /* kernel/capability.c */ 555 asmlinkage long sys_capget(cap_user_header_t header, 556 cap_user_data_t dataptr); 557 asmlinkage long sys_capset(cap_user_header_t header, 558 const cap_user_data_t data); 559 560 /* kernel/exec_domain.c */ 561 asmlinkage long sys_personality(unsigned int personality); 562 563 /* kernel/exit.c */ 564 asmlinkage long sys_exit(int error_code); 565 asmlinkage long sys_exit_group(int error_code); 566 asmlinkage long sys_waitid(int which, pid_t pid, 567 struct siginfo __user *infop, 568 int options, struct rusage __user *ru); 569 570 /* kernel/fork.c */ 571 asmlinkage long sys_set_tid_address(int __user *tidptr); 572 asmlinkage long sys_unshare(unsigned long unshare_flags); 573 574 /* kernel/futex.c */ 575 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, 576 struct __kernel_timespec __user *utime, u32 __user *uaddr2, 577 u32 val3); 578 asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val, 579 struct old_timespec32 __user *utime, u32 __user *uaddr2, 580 u32 val3); 581 asmlinkage long sys_get_robust_list(int pid, 582 struct robust_list_head __user * __user *head_ptr, 583 size_t __user *len_ptr); 584 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, 585 size_t len); 586 587 /* kernel/hrtimer.c */ 588 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, 589 struct __kernel_timespec __user *rmtp); 590 asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp, 591 struct old_timespec32 __user *rmtp); 592 593 /* kernel/itimer.c */ 594 asmlinkage long sys_getitimer(int which, struct itimerval __user *value); 595 asmlinkage long sys_setitimer(int which, 596 struct itimerval __user *value, 597 struct itimerval __user *ovalue); 598 599 /* kernel/kexec.c */ 600 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, 601 struct kexec_segment __user *segments, 602 unsigned long flags); 603 604 /* kernel/module.c */ 605 asmlinkage long sys_init_module(void __user *umod, unsigned long len, 606 const char __user *uargs); 607 asmlinkage long sys_delete_module(const char __user *name_user, 608 unsigned int flags); 609 610 /* kernel/posix-timers.c */ 611 asmlinkage long sys_timer_create(clockid_t which_clock, 612 struct sigevent __user *timer_event_spec, 613 timer_t __user * created_timer_id); 614 asmlinkage long sys_timer_gettime(timer_t timer_id, 615 struct __kernel_itimerspec __user *setting); 616 asmlinkage long sys_timer_getoverrun(timer_t timer_id); 617 asmlinkage long sys_timer_settime(timer_t timer_id, int flags, 618 const struct __kernel_itimerspec __user *new_setting, 619 struct __kernel_itimerspec __user *old_setting); 620 asmlinkage long sys_timer_delete(timer_t timer_id); 621 asmlinkage long sys_clock_settime(clockid_t which_clock, 622 const struct __kernel_timespec __user *tp); 623 asmlinkage long sys_clock_gettime(clockid_t which_clock, 624 struct __kernel_timespec __user *tp); 625 asmlinkage long sys_clock_getres(clockid_t which_clock, 626 struct __kernel_timespec __user *tp); 627 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, 628 const struct __kernel_timespec __user *rqtp, 629 struct __kernel_timespec __user *rmtp); 630 asmlinkage long sys_timer_gettime32(timer_t timer_id, 631 struct old_itimerspec32 __user *setting); 632 asmlinkage long sys_timer_settime32(timer_t timer_id, int flags, 633 struct old_itimerspec32 __user *new, 634 struct old_itimerspec32 __user *old); 635 asmlinkage long sys_clock_settime32(clockid_t which_clock, 636 struct old_timespec32 __user *tp); 637 asmlinkage long sys_clock_gettime32(clockid_t which_clock, 638 struct old_timespec32 __user *tp); 639 asmlinkage long sys_clock_getres_time32(clockid_t which_clock, 640 struct old_timespec32 __user *tp); 641 asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags, 642 struct old_timespec32 __user *rqtp, 643 struct old_timespec32 __user *rmtp); 644 645 /* kernel/printk.c */ 646 asmlinkage long sys_syslog(int type, char __user *buf, int len); 647 648 /* kernel/ptrace.c */ 649 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, 650 unsigned long data); 651 /* kernel/sched/core.c */ 652 653 asmlinkage long sys_sched_setparam(pid_t pid, 654 struct sched_param __user *param); 655 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, 656 struct sched_param __user *param); 657 asmlinkage long sys_sched_getscheduler(pid_t pid); 658 asmlinkage long sys_sched_getparam(pid_t pid, 659 struct sched_param __user *param); 660 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, 661 unsigned long __user *user_mask_ptr); 662 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, 663 unsigned long __user *user_mask_ptr); 664 asmlinkage long sys_sched_yield(void); 665 asmlinkage long sys_sched_get_priority_max(int policy); 666 asmlinkage long sys_sched_get_priority_min(int policy); 667 asmlinkage long sys_sched_rr_get_interval(pid_t pid, 668 struct __kernel_timespec __user *interval); 669 asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid, 670 struct old_timespec32 __user *interval); 671 672 /* kernel/signal.c */ 673 asmlinkage long sys_restart_syscall(void); 674 asmlinkage long sys_kill(pid_t pid, int sig); 675 asmlinkage long sys_tkill(pid_t pid, int sig); 676 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); 677 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, 678 struct sigaltstack __user *uoss); 679 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); 680 #ifndef CONFIG_ODD_RT_SIGACTION 681 asmlinkage long sys_rt_sigaction(int, 682 const struct sigaction __user *, 683 struct sigaction __user *, 684 size_t); 685 #endif 686 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, 687 sigset_t __user *oset, size_t sigsetsize); 688 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); 689 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, 690 siginfo_t __user *uinfo, 691 const struct __kernel_timespec __user *uts, 692 size_t sigsetsize); 693 asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese, 694 siginfo_t __user *uinfo, 695 const struct old_timespec32 __user *uts, 696 size_t sigsetsize); 697 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); 698 699 /* kernel/sys.c */ 700 asmlinkage long sys_setpriority(int which, int who, int niceval); 701 asmlinkage long sys_getpriority(int which, int who); 702 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, 703 void __user *arg); 704 asmlinkage long sys_setregid(gid_t rgid, gid_t egid); 705 asmlinkage long sys_setgid(gid_t gid); 706 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); 707 asmlinkage long sys_setuid(uid_t uid); 708 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); 709 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); 710 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); 711 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); 712 asmlinkage long sys_setfsuid(uid_t uid); 713 asmlinkage long sys_setfsgid(gid_t gid); 714 asmlinkage long sys_times(struct tms __user *tbuf); 715 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); 716 asmlinkage long sys_getpgid(pid_t pid); 717 asmlinkage long sys_getsid(pid_t pid); 718 asmlinkage long sys_setsid(void); 719 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 720 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); 721 asmlinkage long sys_newuname(struct new_utsname __user *name); 722 asmlinkage long sys_sethostname(char __user *name, int len); 723 asmlinkage long sys_setdomainname(char __user *name, int len); 724 asmlinkage long sys_getrlimit(unsigned int resource, 725 struct rlimit __user *rlim); 726 asmlinkage long sys_setrlimit(unsigned int resource, 727 struct rlimit __user *rlim); 728 asmlinkage long sys_getrusage(int who, struct rusage __user *ru); 729 asmlinkage long sys_umask(int mask); 730 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, 731 unsigned long arg4, unsigned long arg5); 732 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); 733 734 /* kernel/time.c */ 735 asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv, 736 struct timezone __user *tz); 737 asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv, 738 struct timezone __user *tz); 739 asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p); 740 asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p); 741 742 /* kernel/timer.c */ 743 asmlinkage long sys_getpid(void); 744 asmlinkage long sys_getppid(void); 745 asmlinkage long sys_getuid(void); 746 asmlinkage long sys_geteuid(void); 747 asmlinkage long sys_getgid(void); 748 asmlinkage long sys_getegid(void); 749 asmlinkage long sys_gettid(void); 750 asmlinkage long sys_sysinfo(struct sysinfo __user *info); 751 752 /* ipc/mqueue.c */ 753 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); 754 asmlinkage long sys_mq_unlink(const char __user *name); 755 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); 756 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); 757 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); 758 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); 759 asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes, 760 char __user *u_msg_ptr, 761 unsigned int msg_len, unsigned int __user *u_msg_prio, 762 const struct old_timespec32 __user *u_abs_timeout); 763 asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes, 764 const char __user *u_msg_ptr, 765 unsigned int msg_len, unsigned int msg_prio, 766 const struct old_timespec32 __user *u_abs_timeout); 767 768 /* ipc/msg.c */ 769 asmlinkage long sys_msgget(key_t key, int msgflg); 770 asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 771 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 772 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, 773 size_t msgsz, long msgtyp, int msgflg); 774 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, 775 size_t msgsz, int msgflg); 776 777 /* ipc/sem.c */ 778 asmlinkage long sys_semget(key_t key, int nsems, int semflg); 779 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); 780 asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 781 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 782 unsigned nsops, 783 const struct __kernel_timespec __user *timeout); 784 asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops, 785 unsigned nsops, 786 const struct old_timespec32 __user *timeout); 787 asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 788 unsigned nsops); 789 790 /* ipc/shm.c */ 791 asmlinkage long sys_shmget(key_t key, size_t size, int flag); 792 asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 793 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 794 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); 795 asmlinkage long sys_shmdt(char __user *shmaddr); 796 797 /* net/socket.c */ 798 asmlinkage long sys_socket(int, int, int); 799 asmlinkage long sys_socketpair(int, int, int, int __user *); 800 asmlinkage long sys_bind(int, struct sockaddr __user *, int); 801 asmlinkage long sys_listen(int, int); 802 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); 803 asmlinkage long sys_connect(int, struct sockaddr __user *, int); 804 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); 805 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); 806 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, 807 struct sockaddr __user *, int); 808 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, 809 struct sockaddr __user *, int __user *); 810 asmlinkage long sys_setsockopt(int fd, int level, int optname, 811 char __user *optval, int optlen); 812 asmlinkage long sys_getsockopt(int fd, int level, int optname, 813 char __user *optval, int __user *optlen); 814 asmlinkage long sys_shutdown(int, int); 815 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 816 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 817 818 /* mm/filemap.c */ 819 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); 820 821 /* mm/nommu.c, also with MMU */ 822 asmlinkage long sys_brk(unsigned long brk); 823 asmlinkage long sys_munmap(unsigned long addr, size_t len); 824 asmlinkage long sys_mremap(unsigned long addr, 825 unsigned long old_len, unsigned long new_len, 826 unsigned long flags, unsigned long new_addr); 827 828 /* security/keys/keyctl.c */ 829 asmlinkage long sys_add_key(const char __user *_type, 830 const char __user *_description, 831 const void __user *_payload, 832 size_t plen, 833 key_serial_t destringid); 834 asmlinkage long sys_request_key(const char __user *_type, 835 const char __user *_description, 836 const char __user *_callout_info, 837 key_serial_t destringid); 838 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, 839 unsigned long arg4, unsigned long arg5); 840 841 /* arch/example/kernel/sys_example.c */ 842 #ifdef CONFIG_CLONE_BACKWARDS 843 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, 844 int __user *); 845 #else 846 #ifdef CONFIG_CLONE_BACKWARDS3 847 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, 848 int __user *, unsigned long); 849 #else 850 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, 851 int __user *, unsigned long); 852 #endif 853 #endif 854 855 asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size); 856 857 asmlinkage long sys_execve(const char __user *filename, 858 const char __user *const __user *argv, 859 const char __user *const __user *envp); 860 861 /* mm/fadvise.c */ 862 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 863 864 /* mm/, CONFIG_MMU only */ 865 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); 866 asmlinkage long sys_swapoff(const char __user *specialfile); 867 asmlinkage long sys_mprotect(unsigned long start, size_t len, 868 unsigned long prot); 869 asmlinkage long sys_msync(unsigned long start, size_t len, int flags); 870 asmlinkage long sys_mlock(unsigned long start, size_t len); 871 asmlinkage long sys_munlock(unsigned long start, size_t len); 872 asmlinkage long sys_mlockall(int flags); 873 asmlinkage long sys_munlockall(void); 874 asmlinkage long sys_mincore(unsigned long start, size_t len, 875 unsigned char __user * vec); 876 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); 877 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, 878 unsigned long prot, unsigned long pgoff, 879 unsigned long flags); 880 asmlinkage long sys_mbind(unsigned long start, unsigned long len, 881 unsigned long mode, 882 const unsigned long __user *nmask, 883 unsigned long maxnode, 884 unsigned flags); 885 asmlinkage long sys_get_mempolicy(int __user *policy, 886 unsigned long __user *nmask, 887 unsigned long maxnode, 888 unsigned long addr, unsigned long flags); 889 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, 890 unsigned long maxnode); 891 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, 892 const unsigned long __user *from, 893 const unsigned long __user *to); 894 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, 895 const void __user * __user *pages, 896 const int __user *nodes, 897 int __user *status, 898 int flags); 899 900 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, 901 siginfo_t __user *uinfo); 902 asmlinkage long sys_perf_event_open( 903 struct perf_event_attr __user *attr_uptr, 904 pid_t pid, int cpu, int group_fd, unsigned long flags); 905 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); 906 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, 907 unsigned int vlen, unsigned flags, 908 struct __kernel_timespec __user *timeout); 909 asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg, 910 unsigned int vlen, unsigned flags, 911 struct old_timespec32 __user *timeout); 912 913 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, 914 int options, struct rusage __user *ru); 915 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, 916 const struct rlimit64 __user *new_rlim, 917 struct rlimit64 __user *old_rlim); 918 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); 919 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, 920 u64 mask, int fd, 921 const char __user *pathname); 922 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, 923 struct file_handle __user *handle, 924 int __user *mnt_id, int flag); 925 asmlinkage long sys_open_by_handle_at(int mountdirfd, 926 struct file_handle __user *handle, 927 int flags); 928 asmlinkage long sys_clock_adjtime(clockid_t which_clock, 929 struct __kernel_timex __user *tx); 930 asmlinkage long sys_clock_adjtime32(clockid_t which_clock, 931 struct old_timex32 __user *tx); 932 asmlinkage long sys_syncfs(int fd); 933 asmlinkage long sys_setns(int fd, int nstype); 934 asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags); 935 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, 936 unsigned int vlen, unsigned flags); 937 asmlinkage long sys_process_vm_readv(pid_t pid, 938 const struct iovec __user *lvec, 939 unsigned long liovcnt, 940 const struct iovec __user *rvec, 941 unsigned long riovcnt, 942 unsigned long flags); 943 asmlinkage long sys_process_vm_writev(pid_t pid, 944 const struct iovec __user *lvec, 945 unsigned long liovcnt, 946 const struct iovec __user *rvec, 947 unsigned long riovcnt, 948 unsigned long flags); 949 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, 950 unsigned long idx1, unsigned long idx2); 951 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); 952 asmlinkage long sys_sched_setattr(pid_t pid, 953 struct sched_attr __user *attr, 954 unsigned int flags); 955 asmlinkage long sys_sched_getattr(pid_t pid, 956 struct sched_attr __user *attr, 957 unsigned int size, 958 unsigned int flags); 959 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, 960 int newdfd, const char __user *newname, 961 unsigned int flags); 962 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, 963 void __user *uargs); 964 asmlinkage long sys_getrandom(char __user *buf, size_t count, 965 unsigned int flags); 966 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); 967 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); 968 asmlinkage long sys_execveat(int dfd, const char __user *filename, 969 const char __user *const __user *argv, 970 const char __user *const __user *envp, int flags); 971 asmlinkage long sys_userfaultfd(int flags); 972 asmlinkage long sys_membarrier(int cmd, int flags); 973 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); 974 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, 975 int fd_out, loff_t __user *off_out, 976 size_t len, unsigned int flags); 977 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, 978 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 979 rwf_t flags); 980 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, 981 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 982 rwf_t flags); 983 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, 984 unsigned long prot, int pkey); 985 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); 986 asmlinkage long sys_pkey_free(int pkey); 987 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, 988 unsigned mask, struct statx __user *buffer); 989 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, 990 int flags, uint32_t sig); 991 asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags); 992 asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path, 993 int to_dfd, const char __user *to_path, 994 unsigned int ms_flags); 995 asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags); 996 asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key, 997 const void __user *value, int aux); 998 asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags); 999 asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags); 1000 asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, 1001 siginfo_t __user *info, 1002 unsigned int flags); 1003 1004 /* 1005 * Architecture-specific system calls 1006 */ 1007 1008 /* arch/x86/kernel/ioport.c */ 1009 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); 1010 1011 /* pciconfig: alpha, arm, arm64, ia64, sparc */ 1012 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, 1013 unsigned long off, unsigned long len, 1014 void __user *buf); 1015 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, 1016 unsigned long off, unsigned long len, 1017 void __user *buf); 1018 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); 1019 1020 /* powerpc */ 1021 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, 1022 __u32 __user *ustatus); 1023 asmlinkage long sys_spu_create(const char __user *name, 1024 unsigned int flags, umode_t mode, int fd); 1025 1026 1027 /* 1028 * Deprecated system calls which are still defined in 1029 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch 1030 */ 1031 1032 /* __ARCH_WANT_SYSCALL_NO_AT */ 1033 asmlinkage long sys_open(const char __user *filename, 1034 int flags, umode_t mode); 1035 asmlinkage long sys_link(const char __user *oldname, 1036 const char __user *newname); 1037 asmlinkage long sys_unlink(const char __user *pathname); 1038 asmlinkage long sys_mknod(const char __user *filename, umode_t mode, 1039 unsigned dev); 1040 asmlinkage long sys_chmod(const char __user *filename, umode_t mode); 1041 asmlinkage long sys_chown(const char __user *filename, 1042 uid_t user, gid_t group); 1043 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); 1044 asmlinkage long sys_rmdir(const char __user *pathname); 1045 asmlinkage long sys_lchown(const char __user *filename, 1046 uid_t user, gid_t group); 1047 asmlinkage long sys_access(const char __user *filename, int mode); 1048 asmlinkage long sys_rename(const char __user *oldname, 1049 const char __user *newname); 1050 asmlinkage long sys_symlink(const char __user *old, const char __user *new); 1051 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 1052 asmlinkage long sys_stat64(const char __user *filename, 1053 struct stat64 __user *statbuf); 1054 asmlinkage long sys_lstat64(const char __user *filename, 1055 struct stat64 __user *statbuf); 1056 #endif 1057 1058 /* __ARCH_WANT_SYSCALL_NO_FLAGS */ 1059 asmlinkage long sys_pipe(int __user *fildes); 1060 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); 1061 asmlinkage long sys_epoll_create(int size); 1062 asmlinkage long sys_inotify_init(void); 1063 asmlinkage long sys_eventfd(unsigned int count); 1064 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); 1065 1066 /* __ARCH_WANT_SYSCALL_OFF_T */ 1067 asmlinkage long sys_sendfile(int out_fd, int in_fd, 1068 off_t __user *offset, size_t count); 1069 asmlinkage long sys_newstat(const char __user *filename, 1070 struct stat __user *statbuf); 1071 asmlinkage long sys_newlstat(const char __user *filename, 1072 struct stat __user *statbuf); 1073 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); 1074 1075 /* __ARCH_WANT_SYSCALL_DEPRECATED */ 1076 asmlinkage long sys_alarm(unsigned int seconds); 1077 asmlinkage long sys_getpgrp(void); 1078 asmlinkage long sys_pause(void); 1079 asmlinkage long sys_time(__kernel_old_time_t __user *tloc); 1080 asmlinkage long sys_time32(old_time32_t __user *tloc); 1081 #ifdef __ARCH_WANT_SYS_UTIME 1082 asmlinkage long sys_utime(char __user *filename, 1083 struct utimbuf __user *times); 1084 asmlinkage long sys_utimes(char __user *filename, 1085 struct __kernel_old_timeval __user *utimes); 1086 asmlinkage long sys_futimesat(int dfd, const char __user *filename, 1087 struct __kernel_old_timeval __user *utimes); 1088 #endif 1089 asmlinkage long sys_futimesat_time32(unsigned int dfd, 1090 const char __user *filename, 1091 struct old_timeval32 __user *t); 1092 asmlinkage long sys_utime32(const char __user *filename, 1093 struct old_utimbuf32 __user *t); 1094 asmlinkage long sys_utimes_time32(const char __user *filename, 1095 struct old_timeval32 __user *t); 1096 asmlinkage long sys_creat(const char __user *pathname, umode_t mode); 1097 asmlinkage long sys_getdents(unsigned int fd, 1098 struct linux_dirent __user *dirent, 1099 unsigned int count); 1100 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, 1101 fd_set __user *exp, struct __kernel_old_timeval __user *tvp); 1102 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, 1103 int timeout); 1104 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, 1105 int maxevents, int timeout); 1106 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); 1107 asmlinkage long sys_vfork(void); 1108 asmlinkage long sys_recv(int, void __user *, size_t, unsigned); 1109 asmlinkage long sys_send(int, void __user *, size_t, unsigned); 1110 asmlinkage long sys_bdflush(int func, long data); 1111 asmlinkage long sys_oldumount(char __user *name); 1112 asmlinkage long sys_uselib(const char __user *library); 1113 asmlinkage long sys_sysctl(struct __sysctl_args __user *args); 1114 asmlinkage long sys_sysfs(int option, 1115 unsigned long arg1, unsigned long arg2); 1116 asmlinkage long sys_fork(void); 1117 1118 /* obsolete: kernel/time/time.c */ 1119 asmlinkage long sys_stime(__kernel_old_time_t __user *tptr); 1120 asmlinkage long sys_stime32(old_time32_t __user *tptr); 1121 1122 /* obsolete: kernel/signal.c */ 1123 asmlinkage long sys_sigpending(old_sigset_t __user *uset); 1124 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, 1125 old_sigset_t __user *oset); 1126 #ifdef CONFIG_OLD_SIGSUSPEND 1127 asmlinkage long sys_sigsuspend(old_sigset_t mask); 1128 #endif 1129 1130 #ifdef CONFIG_OLD_SIGSUSPEND3 1131 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); 1132 #endif 1133 1134 #ifdef CONFIG_OLD_SIGACTION 1135 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, 1136 struct old_sigaction __user *); 1137 #endif 1138 asmlinkage long sys_sgetmask(void); 1139 asmlinkage long sys_ssetmask(int newmask); 1140 asmlinkage long sys_signal(int sig, __sighandler_t handler); 1141 1142 /* obsolete: kernel/sched/core.c */ 1143 asmlinkage long sys_nice(int increment); 1144 1145 /* obsolete: kernel/kexec_file.c */ 1146 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, 1147 unsigned long cmdline_len, 1148 const char __user *cmdline_ptr, 1149 unsigned long flags); 1150 1151 /* obsolete: kernel/exit.c */ 1152 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); 1153 1154 /* obsolete: kernel/uid16.c */ 1155 #ifdef CONFIG_HAVE_UID16 1156 asmlinkage long sys_chown16(const char __user *filename, 1157 old_uid_t user, old_gid_t group); 1158 asmlinkage long sys_lchown16(const char __user *filename, 1159 old_uid_t user, old_gid_t group); 1160 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); 1161 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); 1162 asmlinkage long sys_setgid16(old_gid_t gid); 1163 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); 1164 asmlinkage long sys_setuid16(old_uid_t uid); 1165 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); 1166 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, 1167 old_uid_t __user *euid, old_uid_t __user *suid); 1168 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); 1169 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, 1170 old_gid_t __user *egid, old_gid_t __user *sgid); 1171 asmlinkage long sys_setfsuid16(old_uid_t uid); 1172 asmlinkage long sys_setfsgid16(old_gid_t gid); 1173 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); 1174 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); 1175 asmlinkage long sys_getuid16(void); 1176 asmlinkage long sys_geteuid16(void); 1177 asmlinkage long sys_getgid16(void); 1178 asmlinkage long sys_getegid16(void); 1179 #endif 1180 1181 /* obsolete: net/socket.c */ 1182 asmlinkage long sys_socketcall(int call, unsigned long __user *args); 1183 1184 /* obsolete: fs/stat.c */ 1185 asmlinkage long sys_stat(const char __user *filename, 1186 struct __old_kernel_stat __user *statbuf); 1187 asmlinkage long sys_lstat(const char __user *filename, 1188 struct __old_kernel_stat __user *statbuf); 1189 asmlinkage long sys_fstat(unsigned int fd, 1190 struct __old_kernel_stat __user *statbuf); 1191 asmlinkage long sys_readlink(const char __user *path, 1192 char __user *buf, int bufsiz); 1193 1194 /* obsolete: fs/select.c */ 1195 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); 1196 1197 /* obsolete: fs/readdir.c */ 1198 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); 1199 1200 /* obsolete: kernel/sys.c */ 1201 asmlinkage long sys_gethostname(char __user *name, int len); 1202 asmlinkage long sys_uname(struct old_utsname __user *); 1203 asmlinkage long sys_olduname(struct oldold_utsname __user *); 1204 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT 1205 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); 1206 #endif 1207 1208 /* obsolete: ipc */ 1209 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, 1210 unsigned long third, void __user *ptr, long fifth); 1211 1212 /* obsolete: mm/ */ 1213 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, 1214 unsigned long prot, unsigned long flags, 1215 unsigned long fd, unsigned long pgoff); 1216 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); 1217 1218 1219 /* 1220 * Not a real system call, but a placeholder for syscalls which are 1221 * not implemented -- see kernel/sys_ni.c 1222 */ 1223 asmlinkage long sys_ni_syscall(void); 1224 1225 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 1226 1227 1228 /* 1229 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. 1230 * Instead, use one of the functions which work equivalently, such as 1231 * the ksys_xyzyyz() functions prototyped below. 1232 */ 1233 1234 int ksys_umount(char __user *name, int flags); 1235 int ksys_dup(unsigned int fildes); 1236 int ksys_chroot(const char __user *filename); 1237 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); 1238 int ksys_chdir(const char __user *filename); 1239 int ksys_fchmod(unsigned int fd, umode_t mode); 1240 int ksys_fchown(unsigned int fd, uid_t user, gid_t group); 1241 int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, 1242 unsigned int count); 1243 int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); 1244 off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence); 1245 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); 1246 void ksys_sync(void); 1247 int ksys_unshare(unsigned long unshare_flags); 1248 int ksys_setsid(void); 1249 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 1250 unsigned int flags); 1251 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, 1252 loff_t pos); 1253 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, 1254 size_t count, loff_t pos); 1255 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); 1256 #ifdef CONFIG_ADVISE_SYSCALLS 1257 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 1258 #else 1259 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, 1260 int advice) 1261 { 1262 return -EINVAL; 1263 } 1264 #endif 1265 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, 1266 unsigned long prot, unsigned long flags, 1267 unsigned long fd, unsigned long pgoff); 1268 ssize_t ksys_readahead(int fd, loff_t offset, size_t count); 1269 int ksys_ipc(unsigned int call, int first, unsigned long second, 1270 unsigned long third, void __user * ptr, long fifth); 1271 int compat_ksys_ipc(u32 call, int first, int second, 1272 u32 third, u32 ptr, u32 fifth); 1273 1274 /* 1275 * The following kernel syscall equivalents are just wrappers to fs-internal 1276 * functions. Therefore, provide stubs to be inlined at the callsites. 1277 */ 1278 extern long do_unlinkat(int dfd, struct filename *name); 1279 1280 static inline long ksys_unlink(const char __user *pathname) 1281 { 1282 return do_unlinkat(AT_FDCWD, getname(pathname)); 1283 } 1284 1285 extern long do_rmdir(int dfd, const char __user *pathname); 1286 1287 static inline long ksys_rmdir(const char __user *pathname) 1288 { 1289 return do_rmdir(AT_FDCWD, pathname); 1290 } 1291 1292 extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); 1293 1294 static inline long ksys_mkdir(const char __user *pathname, umode_t mode) 1295 { 1296 return do_mkdirat(AT_FDCWD, pathname, mode); 1297 } 1298 1299 extern long do_symlinkat(const char __user *oldname, int newdfd, 1300 const char __user *newname); 1301 1302 static inline long ksys_symlink(const char __user *oldname, 1303 const char __user *newname) 1304 { 1305 return do_symlinkat(oldname, AT_FDCWD, newname); 1306 } 1307 1308 extern long do_mknodat(int dfd, const char __user *filename, umode_t mode, 1309 unsigned int dev); 1310 1311 static inline long ksys_mknod(const char __user *filename, umode_t mode, 1312 unsigned int dev) 1313 { 1314 return do_mknodat(AT_FDCWD, filename, mode, dev); 1315 } 1316 1317 extern int do_linkat(int olddfd, const char __user *oldname, int newdfd, 1318 const char __user *newname, int flags); 1319 1320 static inline long ksys_link(const char __user *oldname, 1321 const char __user *newname) 1322 { 1323 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); 1324 } 1325 1326 extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode); 1327 1328 static inline int ksys_chmod(const char __user *filename, umode_t mode) 1329 { 1330 return do_fchmodat(AT_FDCWD, filename, mode); 1331 } 1332 1333 extern long do_faccessat(int dfd, const char __user *filename, int mode); 1334 1335 static inline long ksys_access(const char __user *filename, int mode) 1336 { 1337 return do_faccessat(AT_FDCWD, filename, mode); 1338 } 1339 1340 extern int do_fchownat(int dfd, const char __user *filename, uid_t user, 1341 gid_t group, int flag); 1342 1343 static inline long ksys_chown(const char __user *filename, uid_t user, 1344 gid_t group) 1345 { 1346 return do_fchownat(AT_FDCWD, filename, user, group, 0); 1347 } 1348 1349 static inline long ksys_lchown(const char __user *filename, uid_t user, 1350 gid_t group) 1351 { 1352 return do_fchownat(AT_FDCWD, filename, user, group, 1353 AT_SYMLINK_NOFOLLOW); 1354 } 1355 1356 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); 1357 1358 static inline long ksys_ftruncate(unsigned int fd, unsigned long length) 1359 { 1360 return do_sys_ftruncate(fd, length, 1); 1361 } 1362 1363 extern int __close_fd(struct files_struct *files, unsigned int fd); 1364 1365 /* 1366 * In contrast to sys_close(), this stub does not check whether the syscall 1367 * should or should not be restarted, but returns the raw error codes from 1368 * __close_fd(). 1369 */ 1370 static inline int ksys_close(unsigned int fd) 1371 { 1372 return __close_fd(current->files, fd); 1373 } 1374 1375 extern long do_sys_open(int dfd, const char __user *filename, int flags, 1376 umode_t mode); 1377 1378 static inline long ksys_open(const char __user *filename, int flags, 1379 umode_t mode) 1380 { 1381 if (force_o_largefile()) 1382 flags |= O_LARGEFILE; 1383 return do_sys_open(AT_FDCWD, filename, flags, mode); 1384 } 1385 1386 extern long do_sys_truncate(const char __user *pathname, loff_t length); 1387 1388 static inline long ksys_truncate(const char __user *pathname, loff_t length) 1389 { 1390 return do_sys_truncate(pathname, length); 1391 } 1392 1393 static inline unsigned int ksys_personality(unsigned int personality) 1394 { 1395 unsigned int old = current->personality; 1396 1397 if (personality != 0xffffffff) 1398 set_personality(personality); 1399 1400 return old; 1401 } 1402 1403 /* for __ARCH_WANT_SYS_IPC */ 1404 long ksys_semtimedop(int semid, struct sembuf __user *tsops, 1405 unsigned int nsops, 1406 const struct __kernel_timespec __user *timeout); 1407 long ksys_semget(key_t key, int nsems, int semflg); 1408 long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 1409 long ksys_msgget(key_t key, int msgflg); 1410 long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 1411 long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1412 long msgtyp, int msgflg); 1413 long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1414 int msgflg); 1415 long ksys_shmget(key_t key, size_t size, int shmflg); 1416 long ksys_shmdt(char __user *shmaddr); 1417 long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 1418 long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, 1419 unsigned int nsops, 1420 const struct old_timespec32 __user *timeout); 1421 1422 #endif 1423