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 __kernel_old_itimerval; 20 struct kexec_segment; 21 struct linux_dirent; 22 struct linux_dirent64; 23 struct list_head; 24 struct mmap_arg_struct; 25 struct msgbuf; 26 struct user_msghdr; 27 struct mmsghdr; 28 struct msqid_ds; 29 struct new_utsname; 30 struct nfsctl_arg; 31 struct __old_kernel_stat; 32 struct oldold_utsname; 33 struct old_utsname; 34 struct pollfd; 35 struct rlimit; 36 struct rlimit64; 37 struct rusage; 38 struct sched_param; 39 struct sched_attr; 40 struct sel_arg_struct; 41 struct semaphore; 42 struct sembuf; 43 struct shmid_ds; 44 struct sockaddr; 45 struct stat; 46 struct stat64; 47 struct statfs; 48 struct statfs64; 49 struct statx; 50 struct __sysctl_args; 51 struct sysinfo; 52 struct timespec; 53 struct __kernel_old_timeval; 54 struct __kernel_timex; 55 struct timezone; 56 struct tms; 57 struct utimbuf; 58 struct mq_attr; 59 struct compat_stat; 60 struct old_timeval32; 61 struct robust_list_head; 62 struct getcpu_cache; 63 struct old_linux_dirent; 64 struct perf_event_attr; 65 struct file_handle; 66 struct sigaltstack; 67 struct rseq; 68 union bpf_attr; 69 struct io_uring_params; 70 struct clone_args; 71 struct open_how; 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_faccessat2(int dfd, const char __user *filename, int mode, 432 int flags); 433 asmlinkage long sys_chdir(const char __user *filename); 434 asmlinkage long sys_fchdir(unsigned int fd); 435 asmlinkage long sys_chroot(const char __user *filename); 436 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); 437 asmlinkage long sys_fchmodat(int dfd, const char __user * filename, 438 umode_t mode); 439 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, 440 gid_t group, int flag); 441 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); 442 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, 443 umode_t mode); 444 asmlinkage long sys_openat2(int dfd, const char __user *filename, 445 struct open_how *how, size_t size); 446 asmlinkage long sys_close(unsigned int fd); 447 asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd, 448 unsigned int flags); 449 asmlinkage long sys_vhangup(void); 450 451 /* fs/pipe.c */ 452 asmlinkage long sys_pipe2(int __user *fildes, int flags); 453 454 /* fs/quota.c */ 455 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, 456 qid_t id, void __user *addr); 457 458 /* fs/readdir.c */ 459 asmlinkage long sys_getdents64(unsigned int fd, 460 struct linux_dirent64 __user *dirent, 461 unsigned int count); 462 463 /* fs/read_write.c */ 464 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, 465 unsigned long offset_low, loff_t __user *result, 466 unsigned int whence); 467 asmlinkage long sys_lseek(unsigned int fd, off_t offset, 468 unsigned int whence); 469 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); 470 asmlinkage long sys_write(unsigned int fd, const char __user *buf, 471 size_t count); 472 asmlinkage long sys_readv(unsigned long fd, 473 const struct iovec __user *vec, 474 unsigned long vlen); 475 asmlinkage long sys_writev(unsigned long fd, 476 const struct iovec __user *vec, 477 unsigned long vlen); 478 asmlinkage long sys_pread64(unsigned int fd, char __user *buf, 479 size_t count, loff_t pos); 480 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, 481 size_t count, loff_t pos); 482 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, 483 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 484 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, 485 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 486 487 /* fs/sendfile.c */ 488 asmlinkage long sys_sendfile64(int out_fd, int in_fd, 489 loff_t __user *offset, size_t count); 490 491 /* fs/select.c */ 492 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, 493 fd_set __user *, struct __kernel_timespec __user *, 494 void __user *); 495 asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *, 496 fd_set __user *, struct old_timespec32 __user *, 497 void __user *); 498 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, 499 struct __kernel_timespec __user *, const sigset_t __user *, 500 size_t); 501 asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int, 502 struct old_timespec32 __user *, const sigset_t __user *, 503 size_t); 504 505 /* fs/signalfd.c */ 506 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); 507 508 /* fs/splice.c */ 509 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, 510 unsigned long nr_segs, unsigned int flags); 511 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, 512 int fd_out, loff_t __user *off_out, 513 size_t len, unsigned int flags); 514 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); 515 516 /* fs/stat.c */ 517 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, 518 int bufsiz); 519 asmlinkage long sys_newfstatat(int dfd, const char __user *filename, 520 struct stat __user *statbuf, int flag); 521 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); 522 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 523 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); 524 asmlinkage long sys_fstatat64(int dfd, const char __user *filename, 525 struct stat64 __user *statbuf, int flag); 526 #endif 527 528 /* fs/sync.c */ 529 asmlinkage long sys_sync(void); 530 asmlinkage long sys_fsync(unsigned int fd); 531 asmlinkage long sys_fdatasync(unsigned int fd); 532 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, 533 loff_t offset, loff_t nbytes); 534 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 535 unsigned int flags); 536 537 /* fs/timerfd.c */ 538 asmlinkage long sys_timerfd_create(int clockid, int flags); 539 asmlinkage long sys_timerfd_settime(int ufd, int flags, 540 const struct __kernel_itimerspec __user *utmr, 541 struct __kernel_itimerspec __user *otmr); 542 asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr); 543 asmlinkage long sys_timerfd_gettime32(int ufd, 544 struct old_itimerspec32 __user *otmr); 545 asmlinkage long sys_timerfd_settime32(int ufd, int flags, 546 const struct old_itimerspec32 __user *utmr, 547 struct old_itimerspec32 __user *otmr); 548 549 /* fs/utimes.c */ 550 asmlinkage long sys_utimensat(int dfd, const char __user *filename, 551 struct __kernel_timespec __user *utimes, 552 int flags); 553 asmlinkage long sys_utimensat_time32(unsigned int dfd, 554 const char __user *filename, 555 struct old_timespec32 __user *t, int flags); 556 557 /* kernel/acct.c */ 558 asmlinkage long sys_acct(const char __user *name); 559 560 /* kernel/capability.c */ 561 asmlinkage long sys_capget(cap_user_header_t header, 562 cap_user_data_t dataptr); 563 asmlinkage long sys_capset(cap_user_header_t header, 564 const cap_user_data_t data); 565 566 /* kernel/exec_domain.c */ 567 asmlinkage long sys_personality(unsigned int personality); 568 569 /* kernel/exit.c */ 570 asmlinkage long sys_exit(int error_code); 571 asmlinkage long sys_exit_group(int error_code); 572 asmlinkage long sys_waitid(int which, pid_t pid, 573 struct siginfo __user *infop, 574 int options, struct rusage __user *ru); 575 576 /* kernel/fork.c */ 577 asmlinkage long sys_set_tid_address(int __user *tidptr); 578 asmlinkage long sys_unshare(unsigned long unshare_flags); 579 580 /* kernel/futex.c */ 581 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, 582 struct __kernel_timespec __user *utime, u32 __user *uaddr2, 583 u32 val3); 584 asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val, 585 struct old_timespec32 __user *utime, u32 __user *uaddr2, 586 u32 val3); 587 asmlinkage long sys_get_robust_list(int pid, 588 struct robust_list_head __user * __user *head_ptr, 589 size_t __user *len_ptr); 590 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, 591 size_t len); 592 593 /* kernel/hrtimer.c */ 594 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, 595 struct __kernel_timespec __user *rmtp); 596 asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp, 597 struct old_timespec32 __user *rmtp); 598 599 /* kernel/itimer.c */ 600 asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value); 601 asmlinkage long sys_setitimer(int which, 602 struct __kernel_old_itimerval __user *value, 603 struct __kernel_old_itimerval __user *ovalue); 604 605 /* kernel/kexec.c */ 606 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, 607 struct kexec_segment __user *segments, 608 unsigned long flags); 609 610 /* kernel/module.c */ 611 asmlinkage long sys_init_module(void __user *umod, unsigned long len, 612 const char __user *uargs); 613 asmlinkage long sys_delete_module(const char __user *name_user, 614 unsigned int flags); 615 616 /* kernel/posix-timers.c */ 617 asmlinkage long sys_timer_create(clockid_t which_clock, 618 struct sigevent __user *timer_event_spec, 619 timer_t __user * created_timer_id); 620 asmlinkage long sys_timer_gettime(timer_t timer_id, 621 struct __kernel_itimerspec __user *setting); 622 asmlinkage long sys_timer_getoverrun(timer_t timer_id); 623 asmlinkage long sys_timer_settime(timer_t timer_id, int flags, 624 const struct __kernel_itimerspec __user *new_setting, 625 struct __kernel_itimerspec __user *old_setting); 626 asmlinkage long sys_timer_delete(timer_t timer_id); 627 asmlinkage long sys_clock_settime(clockid_t which_clock, 628 const struct __kernel_timespec __user *tp); 629 asmlinkage long sys_clock_gettime(clockid_t which_clock, 630 struct __kernel_timespec __user *tp); 631 asmlinkage long sys_clock_getres(clockid_t which_clock, 632 struct __kernel_timespec __user *tp); 633 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, 634 const struct __kernel_timespec __user *rqtp, 635 struct __kernel_timespec __user *rmtp); 636 asmlinkage long sys_timer_gettime32(timer_t timer_id, 637 struct old_itimerspec32 __user *setting); 638 asmlinkage long sys_timer_settime32(timer_t timer_id, int flags, 639 struct old_itimerspec32 __user *new, 640 struct old_itimerspec32 __user *old); 641 asmlinkage long sys_clock_settime32(clockid_t which_clock, 642 struct old_timespec32 __user *tp); 643 asmlinkage long sys_clock_gettime32(clockid_t which_clock, 644 struct old_timespec32 __user *tp); 645 asmlinkage long sys_clock_getres_time32(clockid_t which_clock, 646 struct old_timespec32 __user *tp); 647 asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags, 648 struct old_timespec32 __user *rqtp, 649 struct old_timespec32 __user *rmtp); 650 651 /* kernel/printk.c */ 652 asmlinkage long sys_syslog(int type, char __user *buf, int len); 653 654 /* kernel/ptrace.c */ 655 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, 656 unsigned long data); 657 /* kernel/sched/core.c */ 658 659 asmlinkage long sys_sched_setparam(pid_t pid, 660 struct sched_param __user *param); 661 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, 662 struct sched_param __user *param); 663 asmlinkage long sys_sched_getscheduler(pid_t pid); 664 asmlinkage long sys_sched_getparam(pid_t pid, 665 struct sched_param __user *param); 666 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, 667 unsigned long __user *user_mask_ptr); 668 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, 669 unsigned long __user *user_mask_ptr); 670 asmlinkage long sys_sched_yield(void); 671 asmlinkage long sys_sched_get_priority_max(int policy); 672 asmlinkage long sys_sched_get_priority_min(int policy); 673 asmlinkage long sys_sched_rr_get_interval(pid_t pid, 674 struct __kernel_timespec __user *interval); 675 asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid, 676 struct old_timespec32 __user *interval); 677 678 /* kernel/signal.c */ 679 asmlinkage long sys_restart_syscall(void); 680 asmlinkage long sys_kill(pid_t pid, int sig); 681 asmlinkage long sys_tkill(pid_t pid, int sig); 682 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); 683 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, 684 struct sigaltstack __user *uoss); 685 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); 686 #ifndef CONFIG_ODD_RT_SIGACTION 687 asmlinkage long sys_rt_sigaction(int, 688 const struct sigaction __user *, 689 struct sigaction __user *, 690 size_t); 691 #endif 692 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, 693 sigset_t __user *oset, size_t sigsetsize); 694 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); 695 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, 696 siginfo_t __user *uinfo, 697 const struct __kernel_timespec __user *uts, 698 size_t sigsetsize); 699 asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese, 700 siginfo_t __user *uinfo, 701 const struct old_timespec32 __user *uts, 702 size_t sigsetsize); 703 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); 704 705 /* kernel/sys.c */ 706 asmlinkage long sys_setpriority(int which, int who, int niceval); 707 asmlinkage long sys_getpriority(int which, int who); 708 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, 709 void __user *arg); 710 asmlinkage long sys_setregid(gid_t rgid, gid_t egid); 711 asmlinkage long sys_setgid(gid_t gid); 712 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); 713 asmlinkage long sys_setuid(uid_t uid); 714 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); 715 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); 716 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); 717 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); 718 asmlinkage long sys_setfsuid(uid_t uid); 719 asmlinkage long sys_setfsgid(gid_t gid); 720 asmlinkage long sys_times(struct tms __user *tbuf); 721 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); 722 asmlinkage long sys_getpgid(pid_t pid); 723 asmlinkage long sys_getsid(pid_t pid); 724 asmlinkage long sys_setsid(void); 725 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 726 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); 727 asmlinkage long sys_newuname(struct new_utsname __user *name); 728 asmlinkage long sys_sethostname(char __user *name, int len); 729 asmlinkage long sys_setdomainname(char __user *name, int len); 730 asmlinkage long sys_getrlimit(unsigned int resource, 731 struct rlimit __user *rlim); 732 asmlinkage long sys_setrlimit(unsigned int resource, 733 struct rlimit __user *rlim); 734 asmlinkage long sys_getrusage(int who, struct rusage __user *ru); 735 asmlinkage long sys_umask(int mask); 736 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, 737 unsigned long arg4, unsigned long arg5); 738 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); 739 740 /* kernel/time.c */ 741 asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv, 742 struct timezone __user *tz); 743 asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv, 744 struct timezone __user *tz); 745 asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p); 746 asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p); 747 748 /* kernel/timer.c */ 749 asmlinkage long sys_getpid(void); 750 asmlinkage long sys_getppid(void); 751 asmlinkage long sys_getuid(void); 752 asmlinkage long sys_geteuid(void); 753 asmlinkage long sys_getgid(void); 754 asmlinkage long sys_getegid(void); 755 asmlinkage long sys_gettid(void); 756 asmlinkage long sys_sysinfo(struct sysinfo __user *info); 757 758 /* ipc/mqueue.c */ 759 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); 760 asmlinkage long sys_mq_unlink(const char __user *name); 761 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); 762 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); 763 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); 764 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); 765 asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes, 766 char __user *u_msg_ptr, 767 unsigned int msg_len, unsigned int __user *u_msg_prio, 768 const struct old_timespec32 __user *u_abs_timeout); 769 asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes, 770 const char __user *u_msg_ptr, 771 unsigned int msg_len, unsigned int msg_prio, 772 const struct old_timespec32 __user *u_abs_timeout); 773 774 /* ipc/msg.c */ 775 asmlinkage long sys_msgget(key_t key, int msgflg); 776 asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 777 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 778 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, 779 size_t msgsz, long msgtyp, int msgflg); 780 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, 781 size_t msgsz, int msgflg); 782 783 /* ipc/sem.c */ 784 asmlinkage long sys_semget(key_t key, int nsems, int semflg); 785 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); 786 asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 787 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 788 unsigned nsops, 789 const struct __kernel_timespec __user *timeout); 790 asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops, 791 unsigned nsops, 792 const struct old_timespec32 __user *timeout); 793 asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 794 unsigned nsops); 795 796 /* ipc/shm.c */ 797 asmlinkage long sys_shmget(key_t key, size_t size, int flag); 798 asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 799 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 800 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); 801 asmlinkage long sys_shmdt(char __user *shmaddr); 802 803 /* net/socket.c */ 804 asmlinkage long sys_socket(int, int, int); 805 asmlinkage long sys_socketpair(int, int, int, int __user *); 806 asmlinkage long sys_bind(int, struct sockaddr __user *, int); 807 asmlinkage long sys_listen(int, int); 808 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); 809 asmlinkage long sys_connect(int, struct sockaddr __user *, int); 810 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); 811 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); 812 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, 813 struct sockaddr __user *, int); 814 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, 815 struct sockaddr __user *, int __user *); 816 asmlinkage long sys_setsockopt(int fd, int level, int optname, 817 char __user *optval, int optlen); 818 asmlinkage long sys_getsockopt(int fd, int level, int optname, 819 char __user *optval, int __user *optlen); 820 asmlinkage long sys_shutdown(int, int); 821 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 822 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 823 824 /* mm/filemap.c */ 825 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); 826 827 /* mm/nommu.c, also with MMU */ 828 asmlinkage long sys_brk(unsigned long brk); 829 asmlinkage long sys_munmap(unsigned long addr, size_t len); 830 asmlinkage long sys_mremap(unsigned long addr, 831 unsigned long old_len, unsigned long new_len, 832 unsigned long flags, unsigned long new_addr); 833 834 /* security/keys/keyctl.c */ 835 asmlinkage long sys_add_key(const char __user *_type, 836 const char __user *_description, 837 const void __user *_payload, 838 size_t plen, 839 key_serial_t destringid); 840 asmlinkage long sys_request_key(const char __user *_type, 841 const char __user *_description, 842 const char __user *_callout_info, 843 key_serial_t destringid); 844 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, 845 unsigned long arg4, unsigned long arg5); 846 847 /* arch/example/kernel/sys_example.c */ 848 #ifdef CONFIG_CLONE_BACKWARDS 849 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, 850 int __user *); 851 #else 852 #ifdef CONFIG_CLONE_BACKWARDS3 853 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, 854 int __user *, unsigned long); 855 #else 856 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, 857 int __user *, unsigned long); 858 #endif 859 #endif 860 861 asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size); 862 863 asmlinkage long sys_execve(const char __user *filename, 864 const char __user *const __user *argv, 865 const char __user *const __user *envp); 866 867 /* mm/fadvise.c */ 868 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 869 870 /* mm/, CONFIG_MMU only */ 871 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); 872 asmlinkage long sys_swapoff(const char __user *specialfile); 873 asmlinkage long sys_mprotect(unsigned long start, size_t len, 874 unsigned long prot); 875 asmlinkage long sys_msync(unsigned long start, size_t len, int flags); 876 asmlinkage long sys_mlock(unsigned long start, size_t len); 877 asmlinkage long sys_munlock(unsigned long start, size_t len); 878 asmlinkage long sys_mlockall(int flags); 879 asmlinkage long sys_munlockall(void); 880 asmlinkage long sys_mincore(unsigned long start, size_t len, 881 unsigned char __user * vec); 882 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); 883 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, 884 unsigned long prot, unsigned long pgoff, 885 unsigned long flags); 886 asmlinkage long sys_mbind(unsigned long start, unsigned long len, 887 unsigned long mode, 888 const unsigned long __user *nmask, 889 unsigned long maxnode, 890 unsigned flags); 891 asmlinkage long sys_get_mempolicy(int __user *policy, 892 unsigned long __user *nmask, 893 unsigned long maxnode, 894 unsigned long addr, unsigned long flags); 895 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, 896 unsigned long maxnode); 897 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, 898 const unsigned long __user *from, 899 const unsigned long __user *to); 900 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, 901 const void __user * __user *pages, 902 const int __user *nodes, 903 int __user *status, 904 int flags); 905 906 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, 907 siginfo_t __user *uinfo); 908 asmlinkage long sys_perf_event_open( 909 struct perf_event_attr __user *attr_uptr, 910 pid_t pid, int cpu, int group_fd, unsigned long flags); 911 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); 912 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, 913 unsigned int vlen, unsigned flags, 914 struct __kernel_timespec __user *timeout); 915 asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg, 916 unsigned int vlen, unsigned flags, 917 struct old_timespec32 __user *timeout); 918 919 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, 920 int options, struct rusage __user *ru); 921 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, 922 const struct rlimit64 __user *new_rlim, 923 struct rlimit64 __user *old_rlim); 924 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); 925 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, 926 u64 mask, int fd, 927 const char __user *pathname); 928 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, 929 struct file_handle __user *handle, 930 int __user *mnt_id, int flag); 931 asmlinkage long sys_open_by_handle_at(int mountdirfd, 932 struct file_handle __user *handle, 933 int flags); 934 asmlinkage long sys_clock_adjtime(clockid_t which_clock, 935 struct __kernel_timex __user *tx); 936 asmlinkage long sys_clock_adjtime32(clockid_t which_clock, 937 struct old_timex32 __user *tx); 938 asmlinkage long sys_syncfs(int fd); 939 asmlinkage long sys_setns(int fd, int nstype); 940 asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags); 941 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, 942 unsigned int vlen, unsigned flags); 943 asmlinkage long sys_process_vm_readv(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_process_vm_writev(pid_t pid, 950 const struct iovec __user *lvec, 951 unsigned long liovcnt, 952 const struct iovec __user *rvec, 953 unsigned long riovcnt, 954 unsigned long flags); 955 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, 956 unsigned long idx1, unsigned long idx2); 957 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); 958 asmlinkage long sys_sched_setattr(pid_t pid, 959 struct sched_attr __user *attr, 960 unsigned int flags); 961 asmlinkage long sys_sched_getattr(pid_t pid, 962 struct sched_attr __user *attr, 963 unsigned int size, 964 unsigned int flags); 965 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, 966 int newdfd, const char __user *newname, 967 unsigned int flags); 968 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, 969 void __user *uargs); 970 asmlinkage long sys_getrandom(char __user *buf, size_t count, 971 unsigned int flags); 972 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); 973 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); 974 asmlinkage long sys_execveat(int dfd, const char __user *filename, 975 const char __user *const __user *argv, 976 const char __user *const __user *envp, int flags); 977 asmlinkage long sys_userfaultfd(int flags); 978 asmlinkage long sys_membarrier(int cmd, int flags); 979 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); 980 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, 981 int fd_out, loff_t __user *off_out, 982 size_t len, unsigned int flags); 983 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, 984 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 985 rwf_t flags); 986 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, 987 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 988 rwf_t flags); 989 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, 990 unsigned long prot, int pkey); 991 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); 992 asmlinkage long sys_pkey_free(int pkey); 993 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, 994 unsigned mask, struct statx __user *buffer); 995 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, 996 int flags, uint32_t sig); 997 asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags); 998 asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path, 999 int to_dfd, const char __user *to_path, 1000 unsigned int ms_flags); 1001 asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags); 1002 asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key, 1003 const void __user *value, int aux); 1004 asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags); 1005 asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags); 1006 asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, 1007 siginfo_t __user *info, 1008 unsigned int flags); 1009 asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags); 1010 1011 /* 1012 * Architecture-specific system calls 1013 */ 1014 1015 /* arch/x86/kernel/ioport.c */ 1016 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); 1017 1018 /* pciconfig: alpha, arm, arm64, ia64, sparc */ 1019 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, 1020 unsigned long off, unsigned long len, 1021 void __user *buf); 1022 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, 1023 unsigned long off, unsigned long len, 1024 void __user *buf); 1025 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); 1026 1027 /* powerpc */ 1028 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, 1029 __u32 __user *ustatus); 1030 asmlinkage long sys_spu_create(const char __user *name, 1031 unsigned int flags, umode_t mode, int fd); 1032 1033 1034 /* 1035 * Deprecated system calls which are still defined in 1036 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch 1037 */ 1038 1039 /* __ARCH_WANT_SYSCALL_NO_AT */ 1040 asmlinkage long sys_open(const char __user *filename, 1041 int flags, umode_t mode); 1042 asmlinkage long sys_link(const char __user *oldname, 1043 const char __user *newname); 1044 asmlinkage long sys_unlink(const char __user *pathname); 1045 asmlinkage long sys_mknod(const char __user *filename, umode_t mode, 1046 unsigned dev); 1047 asmlinkage long sys_chmod(const char __user *filename, umode_t mode); 1048 asmlinkage long sys_chown(const char __user *filename, 1049 uid_t user, gid_t group); 1050 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); 1051 asmlinkage long sys_rmdir(const char __user *pathname); 1052 asmlinkage long sys_lchown(const char __user *filename, 1053 uid_t user, gid_t group); 1054 asmlinkage long sys_access(const char __user *filename, int mode); 1055 asmlinkage long sys_rename(const char __user *oldname, 1056 const char __user *newname); 1057 asmlinkage long sys_symlink(const char __user *old, const char __user *new); 1058 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 1059 asmlinkage long sys_stat64(const char __user *filename, 1060 struct stat64 __user *statbuf); 1061 asmlinkage long sys_lstat64(const char __user *filename, 1062 struct stat64 __user *statbuf); 1063 #endif 1064 1065 /* __ARCH_WANT_SYSCALL_NO_FLAGS */ 1066 asmlinkage long sys_pipe(int __user *fildes); 1067 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); 1068 asmlinkage long sys_epoll_create(int size); 1069 asmlinkage long sys_inotify_init(void); 1070 asmlinkage long sys_eventfd(unsigned int count); 1071 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); 1072 1073 /* __ARCH_WANT_SYSCALL_OFF_T */ 1074 asmlinkage long sys_sendfile(int out_fd, int in_fd, 1075 off_t __user *offset, size_t count); 1076 asmlinkage long sys_newstat(const char __user *filename, 1077 struct stat __user *statbuf); 1078 asmlinkage long sys_newlstat(const char __user *filename, 1079 struct stat __user *statbuf); 1080 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); 1081 1082 /* __ARCH_WANT_SYSCALL_DEPRECATED */ 1083 asmlinkage long sys_alarm(unsigned int seconds); 1084 asmlinkage long sys_getpgrp(void); 1085 asmlinkage long sys_pause(void); 1086 asmlinkage long sys_time(__kernel_old_time_t __user *tloc); 1087 asmlinkage long sys_time32(old_time32_t __user *tloc); 1088 #ifdef __ARCH_WANT_SYS_UTIME 1089 asmlinkage long sys_utime(char __user *filename, 1090 struct utimbuf __user *times); 1091 asmlinkage long sys_utimes(char __user *filename, 1092 struct __kernel_old_timeval __user *utimes); 1093 asmlinkage long sys_futimesat(int dfd, const char __user *filename, 1094 struct __kernel_old_timeval __user *utimes); 1095 #endif 1096 asmlinkage long sys_futimesat_time32(unsigned int dfd, 1097 const char __user *filename, 1098 struct old_timeval32 __user *t); 1099 asmlinkage long sys_utime32(const char __user *filename, 1100 struct old_utimbuf32 __user *t); 1101 asmlinkage long sys_utimes_time32(const char __user *filename, 1102 struct old_timeval32 __user *t); 1103 asmlinkage long sys_creat(const char __user *pathname, umode_t mode); 1104 asmlinkage long sys_getdents(unsigned int fd, 1105 struct linux_dirent __user *dirent, 1106 unsigned int count); 1107 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, 1108 fd_set __user *exp, struct __kernel_old_timeval __user *tvp); 1109 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, 1110 int timeout); 1111 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, 1112 int maxevents, int timeout); 1113 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); 1114 asmlinkage long sys_vfork(void); 1115 asmlinkage long sys_recv(int, void __user *, size_t, unsigned); 1116 asmlinkage long sys_send(int, void __user *, size_t, unsigned); 1117 asmlinkage long sys_bdflush(int func, long data); 1118 asmlinkage long sys_oldumount(char __user *name); 1119 asmlinkage long sys_uselib(const char __user *library); 1120 asmlinkage long sys_sysctl(struct __sysctl_args __user *args); 1121 asmlinkage long sys_sysfs(int option, 1122 unsigned long arg1, unsigned long arg2); 1123 asmlinkage long sys_fork(void); 1124 1125 /* obsolete: kernel/time/time.c */ 1126 asmlinkage long sys_stime(__kernel_old_time_t __user *tptr); 1127 asmlinkage long sys_stime32(old_time32_t __user *tptr); 1128 1129 /* obsolete: kernel/signal.c */ 1130 asmlinkage long sys_sigpending(old_sigset_t __user *uset); 1131 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, 1132 old_sigset_t __user *oset); 1133 #ifdef CONFIG_OLD_SIGSUSPEND 1134 asmlinkage long sys_sigsuspend(old_sigset_t mask); 1135 #endif 1136 1137 #ifdef CONFIG_OLD_SIGSUSPEND3 1138 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); 1139 #endif 1140 1141 #ifdef CONFIG_OLD_SIGACTION 1142 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, 1143 struct old_sigaction __user *); 1144 #endif 1145 asmlinkage long sys_sgetmask(void); 1146 asmlinkage long sys_ssetmask(int newmask); 1147 asmlinkage long sys_signal(int sig, __sighandler_t handler); 1148 1149 /* obsolete: kernel/sched/core.c */ 1150 asmlinkage long sys_nice(int increment); 1151 1152 /* obsolete: kernel/kexec_file.c */ 1153 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, 1154 unsigned long cmdline_len, 1155 const char __user *cmdline_ptr, 1156 unsigned long flags); 1157 1158 /* obsolete: kernel/exit.c */ 1159 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); 1160 1161 /* obsolete: kernel/uid16.c */ 1162 #ifdef CONFIG_HAVE_UID16 1163 asmlinkage long sys_chown16(const char __user *filename, 1164 old_uid_t user, old_gid_t group); 1165 asmlinkage long sys_lchown16(const char __user *filename, 1166 old_uid_t user, old_gid_t group); 1167 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); 1168 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); 1169 asmlinkage long sys_setgid16(old_gid_t gid); 1170 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); 1171 asmlinkage long sys_setuid16(old_uid_t uid); 1172 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); 1173 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, 1174 old_uid_t __user *euid, old_uid_t __user *suid); 1175 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); 1176 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, 1177 old_gid_t __user *egid, old_gid_t __user *sgid); 1178 asmlinkage long sys_setfsuid16(old_uid_t uid); 1179 asmlinkage long sys_setfsgid16(old_gid_t gid); 1180 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); 1181 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); 1182 asmlinkage long sys_getuid16(void); 1183 asmlinkage long sys_geteuid16(void); 1184 asmlinkage long sys_getgid16(void); 1185 asmlinkage long sys_getegid16(void); 1186 #endif 1187 1188 /* obsolete: net/socket.c */ 1189 asmlinkage long sys_socketcall(int call, unsigned long __user *args); 1190 1191 /* obsolete: fs/stat.c */ 1192 asmlinkage long sys_stat(const char __user *filename, 1193 struct __old_kernel_stat __user *statbuf); 1194 asmlinkage long sys_lstat(const char __user *filename, 1195 struct __old_kernel_stat __user *statbuf); 1196 asmlinkage long sys_fstat(unsigned int fd, 1197 struct __old_kernel_stat __user *statbuf); 1198 asmlinkage long sys_readlink(const char __user *path, 1199 char __user *buf, int bufsiz); 1200 1201 /* obsolete: fs/select.c */ 1202 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); 1203 1204 /* obsolete: fs/readdir.c */ 1205 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); 1206 1207 /* obsolete: kernel/sys.c */ 1208 asmlinkage long sys_gethostname(char __user *name, int len); 1209 asmlinkage long sys_uname(struct old_utsname __user *); 1210 asmlinkage long sys_olduname(struct oldold_utsname __user *); 1211 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT 1212 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); 1213 #endif 1214 1215 /* obsolete: ipc */ 1216 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, 1217 unsigned long third, void __user *ptr, long fifth); 1218 1219 /* obsolete: mm/ */ 1220 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, 1221 unsigned long prot, unsigned long flags, 1222 unsigned long fd, unsigned long pgoff); 1223 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); 1224 1225 1226 /* 1227 * Not a real system call, but a placeholder for syscalls which are 1228 * not implemented -- see kernel/sys_ni.c 1229 */ 1230 asmlinkage long sys_ni_syscall(void); 1231 1232 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 1233 1234 1235 /* 1236 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. 1237 * Instead, use one of the functions which work equivalently, such as 1238 * the ksys_xyzyyz() functions prototyped below. 1239 */ 1240 1241 int ksys_umount(char __user *name, int flags); 1242 int ksys_dup(unsigned int fildes); 1243 int ksys_chroot(const char __user *filename); 1244 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); 1245 int ksys_chdir(const char __user *filename); 1246 int ksys_fchmod(unsigned int fd, umode_t mode); 1247 int ksys_fchown(unsigned int fd, uid_t user, gid_t group); 1248 int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, 1249 unsigned int count); 1250 int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); 1251 off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence); 1252 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); 1253 void ksys_sync(void); 1254 int ksys_unshare(unsigned long unshare_flags); 1255 int ksys_setsid(void); 1256 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 1257 unsigned int flags); 1258 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, 1259 loff_t pos); 1260 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, 1261 size_t count, loff_t pos); 1262 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); 1263 #ifdef CONFIG_ADVISE_SYSCALLS 1264 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 1265 #else 1266 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, 1267 int advice) 1268 { 1269 return -EINVAL; 1270 } 1271 #endif 1272 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, 1273 unsigned long prot, unsigned long flags, 1274 unsigned long fd, unsigned long pgoff); 1275 ssize_t ksys_readahead(int fd, loff_t offset, size_t count); 1276 int ksys_ipc(unsigned int call, int first, unsigned long second, 1277 unsigned long third, void __user * ptr, long fifth); 1278 int compat_ksys_ipc(u32 call, int first, int second, 1279 u32 third, u32 ptr, u32 fifth); 1280 1281 /* 1282 * The following kernel syscall equivalents are just wrappers to fs-internal 1283 * functions. Therefore, provide stubs to be inlined at the callsites. 1284 */ 1285 extern long do_unlinkat(int dfd, struct filename *name); 1286 1287 static inline long ksys_unlink(const char __user *pathname) 1288 { 1289 return do_unlinkat(AT_FDCWD, getname(pathname)); 1290 } 1291 1292 extern long do_rmdir(int dfd, const char __user *pathname); 1293 1294 static inline long ksys_rmdir(const char __user *pathname) 1295 { 1296 return do_rmdir(AT_FDCWD, pathname); 1297 } 1298 1299 extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode); 1300 1301 static inline long ksys_mkdir(const char __user *pathname, umode_t mode) 1302 { 1303 return do_mkdirat(AT_FDCWD, pathname, mode); 1304 } 1305 1306 extern long do_symlinkat(const char __user *oldname, int newdfd, 1307 const char __user *newname); 1308 1309 static inline long ksys_symlink(const char __user *oldname, 1310 const char __user *newname) 1311 { 1312 return do_symlinkat(oldname, AT_FDCWD, newname); 1313 } 1314 1315 extern long do_mknodat(int dfd, const char __user *filename, umode_t mode, 1316 unsigned int dev); 1317 1318 static inline long ksys_mknod(const char __user *filename, umode_t mode, 1319 unsigned int dev) 1320 { 1321 return do_mknodat(AT_FDCWD, filename, mode, dev); 1322 } 1323 1324 extern int do_linkat(int olddfd, const char __user *oldname, int newdfd, 1325 const char __user *newname, int flags); 1326 1327 static inline long ksys_link(const char __user *oldname, 1328 const char __user *newname) 1329 { 1330 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); 1331 } 1332 1333 extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode); 1334 1335 static inline int ksys_chmod(const char __user *filename, umode_t mode) 1336 { 1337 return do_fchmodat(AT_FDCWD, filename, mode); 1338 } 1339 1340 long do_faccessat(int dfd, const char __user *filename, int mode, int flags); 1341 1342 static inline long ksys_access(const char __user *filename, int mode) 1343 { 1344 return do_faccessat(AT_FDCWD, filename, mode, 0); 1345 } 1346 1347 extern int do_fchownat(int dfd, const char __user *filename, uid_t user, 1348 gid_t group, int flag); 1349 1350 static inline long ksys_chown(const char __user *filename, uid_t user, 1351 gid_t group) 1352 { 1353 return do_fchownat(AT_FDCWD, filename, user, group, 0); 1354 } 1355 1356 static inline long ksys_lchown(const char __user *filename, uid_t user, 1357 gid_t group) 1358 { 1359 return do_fchownat(AT_FDCWD, filename, user, group, 1360 AT_SYMLINK_NOFOLLOW); 1361 } 1362 1363 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); 1364 1365 static inline long ksys_ftruncate(unsigned int fd, loff_t length) 1366 { 1367 return do_sys_ftruncate(fd, length, 1); 1368 } 1369 1370 extern int __close_fd(struct files_struct *files, unsigned int fd); 1371 1372 /* 1373 * In contrast to sys_close(), this stub does not check whether the syscall 1374 * should or should not be restarted, but returns the raw error codes from 1375 * __close_fd(). 1376 */ 1377 static inline int ksys_close(unsigned int fd) 1378 { 1379 return __close_fd(current->files, fd); 1380 } 1381 1382 extern long do_sys_open(int dfd, const char __user *filename, int flags, 1383 umode_t mode); 1384 1385 static inline long ksys_open(const char __user *filename, int flags, 1386 umode_t mode) 1387 { 1388 if (force_o_largefile()) 1389 flags |= O_LARGEFILE; 1390 return do_sys_open(AT_FDCWD, filename, flags, mode); 1391 } 1392 1393 extern long do_sys_truncate(const char __user *pathname, loff_t length); 1394 1395 static inline long ksys_truncate(const char __user *pathname, loff_t length) 1396 { 1397 return do_sys_truncate(pathname, length); 1398 } 1399 1400 static inline unsigned int ksys_personality(unsigned int personality) 1401 { 1402 unsigned int old = current->personality; 1403 1404 if (personality != 0xffffffff) 1405 set_personality(personality); 1406 1407 return old; 1408 } 1409 1410 /* for __ARCH_WANT_SYS_IPC */ 1411 long ksys_semtimedop(int semid, struct sembuf __user *tsops, 1412 unsigned int nsops, 1413 const struct __kernel_timespec __user *timeout); 1414 long ksys_semget(key_t key, int nsems, int semflg); 1415 long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 1416 long ksys_msgget(key_t key, int msgflg); 1417 long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 1418 long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1419 long msgtyp, int msgflg); 1420 long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1421 int msgflg); 1422 long ksys_shmget(key_t key, size_t size, int shmflg); 1423 long ksys_shmdt(char __user *shmaddr); 1424 long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 1425 long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, 1426 unsigned int nsops, 1427 const struct old_timespec32 __user *timeout); 1428 1429 int __sys_getsockopt(int fd, int level, int optname, char __user *optval, 1430 int __user *optlen); 1431 int __sys_setsockopt(int fd, int level, int optname, char __user *optval, 1432 int optlen); 1433 #endif 1434