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 sysinfo; 51 struct timespec; 52 struct __kernel_old_timeval; 53 struct __kernel_timex; 54 struct timezone; 55 struct tms; 56 struct utimbuf; 57 struct mq_attr; 58 struct compat_stat; 59 struct old_timeval32; 60 struct robust_list_head; 61 struct getcpu_cache; 62 struct old_linux_dirent; 63 struct perf_event_attr; 64 struct file_handle; 65 struct sigaltstack; 66 struct rseq; 67 union bpf_attr; 68 struct io_uring_params; 69 struct clone_args; 70 struct open_how; 71 72 #include <linux/types.h> 73 #include <linux/aio_abi.h> 74 #include <linux/capability.h> 75 #include <linux/signal.h> 76 #include <linux/list.h> 77 #include <linux/bug.h> 78 #include <linux/sem.h> 79 #include <asm/siginfo.h> 80 #include <linux/unistd.h> 81 #include <linux/quota.h> 82 #include <linux/key.h> 83 #include <linux/personality.h> 84 #include <trace/syscall.h> 85 86 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 87 /* 88 * It may be useful for an architecture to override the definitions of the 89 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a 90 * different calling convention for syscalls. To allow for that, the prototypes 91 * for the sys_*() functions below will *not* be included if 92 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 93 */ 94 #include <asm/syscall_wrapper.h> 95 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 96 97 /* 98 * __MAP - apply a macro to syscall arguments 99 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to 100 * m(t1, a1), m(t2, a2), ..., m(tn, an) 101 * The first argument must be equal to the amount of type/name 102 * pairs given. Note that this list of pairs (i.e. the arguments 103 * of __MAP starting at the third one) is in the same format as 104 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n> 105 */ 106 #define __MAP0(m,...) 107 #define __MAP1(m,t,a,...) m(t,a) 108 #define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__) 109 #define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__) 110 #define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__) 111 #define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__) 112 #define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__) 113 #define __MAP(n,...) __MAP##n(__VA_ARGS__) 114 115 #define __SC_DECL(t, a) t a 116 #define __TYPE_AS(t, v) __same_type((__force t)0, v) 117 #define __TYPE_IS_L(t) (__TYPE_AS(t, 0L)) 118 #define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL)) 119 #define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL)) 120 #define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a 121 #define __SC_CAST(t, a) (__force t) a 122 #define __SC_ARGS(t, a) a 123 #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long)) 124 125 #ifdef CONFIG_FTRACE_SYSCALLS 126 #define __SC_STR_ADECL(t, a) #a 127 #define __SC_STR_TDECL(t, a) #t 128 129 extern struct trace_event_class event_class_syscall_enter; 130 extern struct trace_event_class event_class_syscall_exit; 131 extern struct trace_event_functions enter_syscall_print_funcs; 132 extern struct trace_event_functions exit_syscall_print_funcs; 133 134 #define SYSCALL_TRACE_ENTER_EVENT(sname) \ 135 static struct syscall_metadata __syscall_meta_##sname; \ 136 static struct trace_event_call __used \ 137 event_enter_##sname = { \ 138 .class = &event_class_syscall_enter, \ 139 { \ 140 .name = "sys_enter"#sname, \ 141 }, \ 142 .event.funcs = &enter_syscall_print_funcs, \ 143 .data = (void *)&__syscall_meta_##sname,\ 144 .flags = TRACE_EVENT_FL_CAP_ANY, \ 145 }; \ 146 static struct trace_event_call __used \ 147 __section("_ftrace_events") \ 148 *__event_enter_##sname = &event_enter_##sname; 149 150 #define SYSCALL_TRACE_EXIT_EVENT(sname) \ 151 static struct syscall_metadata __syscall_meta_##sname; \ 152 static struct trace_event_call __used \ 153 event_exit_##sname = { \ 154 .class = &event_class_syscall_exit, \ 155 { \ 156 .name = "sys_exit"#sname, \ 157 }, \ 158 .event.funcs = &exit_syscall_print_funcs, \ 159 .data = (void *)&__syscall_meta_##sname,\ 160 .flags = TRACE_EVENT_FL_CAP_ANY, \ 161 }; \ 162 static struct trace_event_call __used \ 163 __section("_ftrace_events") \ 164 *__event_exit_##sname = &event_exit_##sname; 165 166 #define SYSCALL_METADATA(sname, nb, ...) \ 167 static const char *types_##sname[] = { \ 168 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \ 169 }; \ 170 static const char *args_##sname[] = { \ 171 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \ 172 }; \ 173 SYSCALL_TRACE_ENTER_EVENT(sname); \ 174 SYSCALL_TRACE_EXIT_EVENT(sname); \ 175 static struct syscall_metadata __used \ 176 __syscall_meta_##sname = { \ 177 .name = "sys"#sname, \ 178 .syscall_nr = -1, /* Filled in at boot */ \ 179 .nb_args = nb, \ 180 .types = nb ? types_##sname : NULL, \ 181 .args = nb ? args_##sname : NULL, \ 182 .enter_event = &event_enter_##sname, \ 183 .exit_event = &event_exit_##sname, \ 184 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \ 185 }; \ 186 static struct syscall_metadata __used \ 187 __section("__syscalls_metadata") \ 188 *__p_syscall_meta_##sname = &__syscall_meta_##sname; 189 190 static inline int is_syscall_trace_event(struct trace_event_call *tp_event) 191 { 192 return tp_event->class == &event_class_syscall_enter || 193 tp_event->class == &event_class_syscall_exit; 194 } 195 196 #else 197 #define SYSCALL_METADATA(sname, nb, ...) 198 199 static inline int is_syscall_trace_event(struct trace_event_call *tp_event) 200 { 201 return 0; 202 } 203 #endif 204 205 #ifndef SYSCALL_DEFINE0 206 #define SYSCALL_DEFINE0(sname) \ 207 SYSCALL_METADATA(_##sname, 0); \ 208 asmlinkage long sys_##sname(void); \ 209 ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \ 210 asmlinkage long sys_##sname(void) 211 #endif /* SYSCALL_DEFINE0 */ 212 213 #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 214 #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 215 #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) 216 #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) 217 #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 218 #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 219 220 #define SYSCALL_DEFINE_MAXARGS 6 221 222 #define SYSCALL_DEFINEx(x, sname, ...) \ 223 SYSCALL_METADATA(sname, x, __VA_ARGS__) \ 224 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) 225 226 #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__) 227 228 /* 229 * The asmlinkage stub is aliased to a function named __se_sys_*() which 230 * sign-extends 32-bit ints to longs whenever needed. The actual work is 231 * done within __do_sys_*(). 232 */ 233 #ifndef __SYSCALL_DEFINEx 234 #define __SYSCALL_DEFINEx(x, name, ...) \ 235 __diag_push(); \ 236 __diag_ignore(GCC, 8, "-Wattribute-alias", \ 237 "Type aliasing is used to sanitize syscall arguments");\ 238 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ 239 __attribute__((alias(__stringify(__se_sys##name)))); \ 240 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ 241 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ 242 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ 243 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 244 { \ 245 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ 246 __MAP(x,__SC_TEST,__VA_ARGS__); \ 247 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ 248 return ret; \ 249 } \ 250 __diag_pop(); \ 251 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 252 #endif /* __SYSCALL_DEFINEx */ 253 254 /* 255 * Called before coming back to user-mode. Returning to user-mode with an 256 * address limit different than USER_DS can allow to overwrite kernel memory. 257 */ 258 static inline void addr_limit_user_check(void) 259 { 260 #ifdef TIF_FSCHECK 261 if (!test_thread_flag(TIF_FSCHECK)) 262 return; 263 #endif 264 265 if (CHECK_DATA_CORRUPTION(uaccess_kernel(), 266 "Invalid address limit on user-mode return")) 267 force_sig(SIGKILL); 268 269 #ifdef TIF_FSCHECK 270 clear_thread_flag(TIF_FSCHECK); 271 #endif 272 } 273 274 /* 275 * These syscall function prototypes are kept in the same order as 276 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below, 277 * followed by deprecated or obsolete system calls. 278 * 279 * Please note that these prototypes here are only provided for information 280 * purposes, for static analysis, and for linking from the syscall table. 281 * These functions should not be called elsewhere from kernel code. 282 * 283 * As the syscall calling convention may be different from the default 284 * for architectures overriding the syscall calling convention, do not 285 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 286 */ 287 #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 288 asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); 289 asmlinkage long sys_io_destroy(aio_context_t ctx); 290 asmlinkage long sys_io_submit(aio_context_t, long, 291 struct iocb __user * __user *); 292 asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, 293 struct io_event __user *result); 294 asmlinkage long sys_io_getevents(aio_context_t ctx_id, 295 long min_nr, 296 long nr, 297 struct io_event __user *events, 298 struct __kernel_timespec __user *timeout); 299 asmlinkage long sys_io_getevents_time32(__u32 ctx_id, 300 __s32 min_nr, 301 __s32 nr, 302 struct io_event __user *events, 303 struct old_timespec32 __user *timeout); 304 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id, 305 long min_nr, 306 long nr, 307 struct io_event __user *events, 308 struct __kernel_timespec __user *timeout, 309 const struct __aio_sigset *sig); 310 asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id, 311 long min_nr, 312 long nr, 313 struct io_event __user *events, 314 struct old_timespec32 __user *timeout, 315 const struct __aio_sigset *sig); 316 asmlinkage long sys_io_uring_setup(u32 entries, 317 struct io_uring_params __user *p); 318 asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit, 319 u32 min_complete, u32 flags, 320 const void __user *argp, size_t argsz); 321 asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op, 322 void __user *arg, unsigned int nr_args); 323 324 /* fs/xattr.c */ 325 asmlinkage long sys_setxattr(const char __user *path, const char __user *name, 326 const void __user *value, size_t size, int flags); 327 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, 328 const void __user *value, size_t size, int flags); 329 asmlinkage long sys_fsetxattr(int fd, const char __user *name, 330 const void __user *value, size_t size, int flags); 331 asmlinkage long sys_getxattr(const char __user *path, const char __user *name, 332 void __user *value, size_t size); 333 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, 334 void __user *value, size_t size); 335 asmlinkage long sys_fgetxattr(int fd, const char __user *name, 336 void __user *value, size_t size); 337 asmlinkage long sys_listxattr(const char __user *path, char __user *list, 338 size_t size); 339 asmlinkage long sys_llistxattr(const char __user *path, char __user *list, 340 size_t size); 341 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); 342 asmlinkage long sys_removexattr(const char __user *path, 343 const char __user *name); 344 asmlinkage long sys_lremovexattr(const char __user *path, 345 const char __user *name); 346 asmlinkage long sys_fremovexattr(int fd, const char __user *name); 347 348 /* fs/dcache.c */ 349 asmlinkage long sys_getcwd(char __user *buf, unsigned long size); 350 351 /* fs/cookies.c */ 352 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); 353 354 /* fs/eventfd.c */ 355 asmlinkage long sys_eventfd2(unsigned int count, int flags); 356 357 /* fs/eventpoll.c */ 358 asmlinkage long sys_epoll_create1(int flags); 359 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, 360 struct epoll_event __user *event); 361 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, 362 int maxevents, int timeout, 363 const sigset_t __user *sigmask, 364 size_t sigsetsize); 365 asmlinkage long sys_epoll_pwait2(int epfd, struct epoll_event __user *events, 366 int maxevents, 367 const struct __kernel_timespec __user *timeout, 368 const sigset_t __user *sigmask, 369 size_t sigsetsize); 370 371 /* fs/fcntl.c */ 372 asmlinkage long sys_dup(unsigned int fildes); 373 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); 374 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); 375 #if BITS_PER_LONG == 32 376 asmlinkage long sys_fcntl64(unsigned int fd, 377 unsigned int cmd, unsigned long arg); 378 #endif 379 380 /* fs/inotify_user.c */ 381 asmlinkage long sys_inotify_init1(int flags); 382 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, 383 u32 mask); 384 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); 385 386 /* fs/ioctl.c */ 387 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, 388 unsigned long arg); 389 390 /* fs/ioprio.c */ 391 asmlinkage long sys_ioprio_set(int which, int who, int ioprio); 392 asmlinkage long sys_ioprio_get(int which, int who); 393 394 /* fs/locks.c */ 395 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); 396 397 /* fs/namei.c */ 398 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, 399 unsigned dev); 400 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); 401 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); 402 asmlinkage long sys_symlinkat(const char __user * oldname, 403 int newdfd, const char __user * newname); 404 asmlinkage long sys_linkat(int olddfd, const char __user *oldname, 405 int newdfd, const char __user *newname, int flags); 406 asmlinkage long sys_renameat(int olddfd, const char __user * oldname, 407 int newdfd, const char __user * newname); 408 409 /* fs/namespace.c */ 410 asmlinkage long sys_umount(char __user *name, int flags); 411 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, 412 char __user *type, unsigned long flags, 413 void __user *data); 414 asmlinkage long sys_pivot_root(const char __user *new_root, 415 const char __user *put_old); 416 417 /* fs/nfsctl.c */ 418 419 /* fs/open.c */ 420 asmlinkage long sys_statfs(const char __user * path, 421 struct statfs __user *buf); 422 asmlinkage long sys_statfs64(const char __user *path, size_t sz, 423 struct statfs64 __user *buf); 424 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); 425 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, 426 struct statfs64 __user *buf); 427 asmlinkage long sys_truncate(const char __user *path, long length); 428 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); 429 #if BITS_PER_LONG == 32 430 asmlinkage long sys_truncate64(const char __user *path, loff_t length); 431 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); 432 #endif 433 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); 434 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); 435 asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode, 436 int flags); 437 asmlinkage long sys_chdir(const char __user *filename); 438 asmlinkage long sys_fchdir(unsigned int fd); 439 asmlinkage long sys_chroot(const char __user *filename); 440 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); 441 asmlinkage long sys_fchmodat(int dfd, const char __user * filename, 442 umode_t mode); 443 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, 444 gid_t group, int flag); 445 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); 446 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, 447 umode_t mode); 448 asmlinkage long sys_openat2(int dfd, const char __user *filename, 449 struct open_how *how, size_t size); 450 asmlinkage long sys_close(unsigned int fd); 451 asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd, 452 unsigned int flags); 453 asmlinkage long sys_vhangup(void); 454 455 /* fs/pipe.c */ 456 asmlinkage long sys_pipe2(int __user *fildes, int flags); 457 458 /* fs/quota.c */ 459 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, 460 qid_t id, void __user *addr); 461 462 /* fs/readdir.c */ 463 asmlinkage long sys_getdents64(unsigned int fd, 464 struct linux_dirent64 __user *dirent, 465 unsigned int count); 466 467 /* fs/read_write.c */ 468 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, 469 unsigned long offset_low, loff_t __user *result, 470 unsigned int whence); 471 asmlinkage long sys_lseek(unsigned int fd, off_t offset, 472 unsigned int whence); 473 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); 474 asmlinkage long sys_write(unsigned int fd, const char __user *buf, 475 size_t count); 476 asmlinkage long sys_readv(unsigned long fd, 477 const struct iovec __user *vec, 478 unsigned long vlen); 479 asmlinkage long sys_writev(unsigned long fd, 480 const struct iovec __user *vec, 481 unsigned long vlen); 482 asmlinkage long sys_pread64(unsigned int fd, char __user *buf, 483 size_t count, loff_t pos); 484 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, 485 size_t count, loff_t pos); 486 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, 487 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 488 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, 489 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 490 491 /* fs/sendfile.c */ 492 asmlinkage long sys_sendfile64(int out_fd, int in_fd, 493 loff_t __user *offset, size_t count); 494 495 /* fs/select.c */ 496 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, 497 fd_set __user *, struct __kernel_timespec __user *, 498 void __user *); 499 asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *, 500 fd_set __user *, struct old_timespec32 __user *, 501 void __user *); 502 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, 503 struct __kernel_timespec __user *, const sigset_t __user *, 504 size_t); 505 asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int, 506 struct old_timespec32 __user *, const sigset_t __user *, 507 size_t); 508 509 /* fs/signalfd.c */ 510 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); 511 512 /* fs/splice.c */ 513 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, 514 unsigned long nr_segs, unsigned int flags); 515 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, 516 int fd_out, loff_t __user *off_out, 517 size_t len, unsigned int flags); 518 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); 519 520 /* fs/stat.c */ 521 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, 522 int bufsiz); 523 asmlinkage long sys_newfstatat(int dfd, const char __user *filename, 524 struct stat __user *statbuf, int flag); 525 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); 526 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 527 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); 528 asmlinkage long sys_fstatat64(int dfd, const char __user *filename, 529 struct stat64 __user *statbuf, int flag); 530 #endif 531 532 /* fs/sync.c */ 533 asmlinkage long sys_sync(void); 534 asmlinkage long sys_fsync(unsigned int fd); 535 asmlinkage long sys_fdatasync(unsigned int fd); 536 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, 537 loff_t offset, loff_t nbytes); 538 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 539 unsigned int flags); 540 541 /* fs/timerfd.c */ 542 asmlinkage long sys_timerfd_create(int clockid, int flags); 543 asmlinkage long sys_timerfd_settime(int ufd, int flags, 544 const struct __kernel_itimerspec __user *utmr, 545 struct __kernel_itimerspec __user *otmr); 546 asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr); 547 asmlinkage long sys_timerfd_gettime32(int ufd, 548 struct old_itimerspec32 __user *otmr); 549 asmlinkage long sys_timerfd_settime32(int ufd, int flags, 550 const struct old_itimerspec32 __user *utmr, 551 struct old_itimerspec32 __user *otmr); 552 553 /* fs/utimes.c */ 554 asmlinkage long sys_utimensat(int dfd, const char __user *filename, 555 struct __kernel_timespec __user *utimes, 556 int flags); 557 asmlinkage long sys_utimensat_time32(unsigned int dfd, 558 const char __user *filename, 559 struct old_timespec32 __user *t, int flags); 560 561 /* kernel/acct.c */ 562 asmlinkage long sys_acct(const char __user *name); 563 564 /* kernel/capability.c */ 565 asmlinkage long sys_capget(cap_user_header_t header, 566 cap_user_data_t dataptr); 567 asmlinkage long sys_capset(cap_user_header_t header, 568 const cap_user_data_t data); 569 570 /* kernel/exec_domain.c */ 571 asmlinkage long sys_personality(unsigned int personality); 572 573 /* kernel/exit.c */ 574 asmlinkage long sys_exit(int error_code); 575 asmlinkage long sys_exit_group(int error_code); 576 asmlinkage long sys_waitid(int which, pid_t pid, 577 struct siginfo __user *infop, 578 int options, struct rusage __user *ru); 579 580 /* kernel/fork.c */ 581 asmlinkage long sys_set_tid_address(int __user *tidptr); 582 asmlinkage long sys_unshare(unsigned long unshare_flags); 583 584 /* kernel/futex.c */ 585 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, 586 struct __kernel_timespec __user *utime, u32 __user *uaddr2, 587 u32 val3); 588 asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val, 589 struct old_timespec32 __user *utime, u32 __user *uaddr2, 590 u32 val3); 591 asmlinkage long sys_get_robust_list(int pid, 592 struct robust_list_head __user * __user *head_ptr, 593 size_t __user *len_ptr); 594 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, 595 size_t len); 596 597 /* kernel/hrtimer.c */ 598 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, 599 struct __kernel_timespec __user *rmtp); 600 asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp, 601 struct old_timespec32 __user *rmtp); 602 603 /* kernel/itimer.c */ 604 asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value); 605 asmlinkage long sys_setitimer(int which, 606 struct __kernel_old_itimerval __user *value, 607 struct __kernel_old_itimerval __user *ovalue); 608 609 /* kernel/kexec.c */ 610 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, 611 struct kexec_segment __user *segments, 612 unsigned long flags); 613 614 /* kernel/module.c */ 615 asmlinkage long sys_init_module(void __user *umod, unsigned long len, 616 const char __user *uargs); 617 asmlinkage long sys_delete_module(const char __user *name_user, 618 unsigned int flags); 619 620 /* kernel/posix-timers.c */ 621 asmlinkage long sys_timer_create(clockid_t which_clock, 622 struct sigevent __user *timer_event_spec, 623 timer_t __user * created_timer_id); 624 asmlinkage long sys_timer_gettime(timer_t timer_id, 625 struct __kernel_itimerspec __user *setting); 626 asmlinkage long sys_timer_getoverrun(timer_t timer_id); 627 asmlinkage long sys_timer_settime(timer_t timer_id, int flags, 628 const struct __kernel_itimerspec __user *new_setting, 629 struct __kernel_itimerspec __user *old_setting); 630 asmlinkage long sys_timer_delete(timer_t timer_id); 631 asmlinkage long sys_clock_settime(clockid_t which_clock, 632 const struct __kernel_timespec __user *tp); 633 asmlinkage long sys_clock_gettime(clockid_t which_clock, 634 struct __kernel_timespec __user *tp); 635 asmlinkage long sys_clock_getres(clockid_t which_clock, 636 struct __kernel_timespec __user *tp); 637 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, 638 const struct __kernel_timespec __user *rqtp, 639 struct __kernel_timespec __user *rmtp); 640 asmlinkage long sys_timer_gettime32(timer_t timer_id, 641 struct old_itimerspec32 __user *setting); 642 asmlinkage long sys_timer_settime32(timer_t timer_id, int flags, 643 struct old_itimerspec32 __user *new, 644 struct old_itimerspec32 __user *old); 645 asmlinkage long sys_clock_settime32(clockid_t which_clock, 646 struct old_timespec32 __user *tp); 647 asmlinkage long sys_clock_gettime32(clockid_t which_clock, 648 struct old_timespec32 __user *tp); 649 asmlinkage long sys_clock_getres_time32(clockid_t which_clock, 650 struct old_timespec32 __user *tp); 651 asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags, 652 struct old_timespec32 __user *rqtp, 653 struct old_timespec32 __user *rmtp); 654 655 /* kernel/printk.c */ 656 asmlinkage long sys_syslog(int type, char __user *buf, int len); 657 658 /* kernel/ptrace.c */ 659 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, 660 unsigned long data); 661 /* kernel/sched/core.c */ 662 663 asmlinkage long sys_sched_setparam(pid_t pid, 664 struct sched_param __user *param); 665 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, 666 struct sched_param __user *param); 667 asmlinkage long sys_sched_getscheduler(pid_t pid); 668 asmlinkage long sys_sched_getparam(pid_t pid, 669 struct sched_param __user *param); 670 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, 671 unsigned long __user *user_mask_ptr); 672 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, 673 unsigned long __user *user_mask_ptr); 674 asmlinkage long sys_sched_yield(void); 675 asmlinkage long sys_sched_get_priority_max(int policy); 676 asmlinkage long sys_sched_get_priority_min(int policy); 677 asmlinkage long sys_sched_rr_get_interval(pid_t pid, 678 struct __kernel_timespec __user *interval); 679 asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid, 680 struct old_timespec32 __user *interval); 681 682 /* kernel/signal.c */ 683 asmlinkage long sys_restart_syscall(void); 684 asmlinkage long sys_kill(pid_t pid, int sig); 685 asmlinkage long sys_tkill(pid_t pid, int sig); 686 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); 687 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, 688 struct sigaltstack __user *uoss); 689 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); 690 #ifndef CONFIG_ODD_RT_SIGACTION 691 asmlinkage long sys_rt_sigaction(int, 692 const struct sigaction __user *, 693 struct sigaction __user *, 694 size_t); 695 #endif 696 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, 697 sigset_t __user *oset, size_t sigsetsize); 698 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); 699 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, 700 siginfo_t __user *uinfo, 701 const struct __kernel_timespec __user *uts, 702 size_t sigsetsize); 703 asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese, 704 siginfo_t __user *uinfo, 705 const struct old_timespec32 __user *uts, 706 size_t sigsetsize); 707 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); 708 709 /* kernel/sys.c */ 710 asmlinkage long sys_setpriority(int which, int who, int niceval); 711 asmlinkage long sys_getpriority(int which, int who); 712 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, 713 void __user *arg); 714 asmlinkage long sys_setregid(gid_t rgid, gid_t egid); 715 asmlinkage long sys_setgid(gid_t gid); 716 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); 717 asmlinkage long sys_setuid(uid_t uid); 718 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); 719 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); 720 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); 721 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); 722 asmlinkage long sys_setfsuid(uid_t uid); 723 asmlinkage long sys_setfsgid(gid_t gid); 724 asmlinkage long sys_times(struct tms __user *tbuf); 725 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); 726 asmlinkage long sys_getpgid(pid_t pid); 727 asmlinkage long sys_getsid(pid_t pid); 728 asmlinkage long sys_setsid(void); 729 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 730 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); 731 asmlinkage long sys_newuname(struct new_utsname __user *name); 732 asmlinkage long sys_sethostname(char __user *name, int len); 733 asmlinkage long sys_setdomainname(char __user *name, int len); 734 asmlinkage long sys_getrlimit(unsigned int resource, 735 struct rlimit __user *rlim); 736 asmlinkage long sys_setrlimit(unsigned int resource, 737 struct rlimit __user *rlim); 738 asmlinkage long sys_getrusage(int who, struct rusage __user *ru); 739 asmlinkage long sys_umask(int mask); 740 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, 741 unsigned long arg4, unsigned long arg5); 742 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); 743 744 /* kernel/time.c */ 745 asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv, 746 struct timezone __user *tz); 747 asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv, 748 struct timezone __user *tz); 749 asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p); 750 asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p); 751 752 /* kernel/sys.c */ 753 asmlinkage long sys_getpid(void); 754 asmlinkage long sys_getppid(void); 755 asmlinkage long sys_getuid(void); 756 asmlinkage long sys_geteuid(void); 757 asmlinkage long sys_getgid(void); 758 asmlinkage long sys_getegid(void); 759 asmlinkage long sys_gettid(void); 760 asmlinkage long sys_sysinfo(struct sysinfo __user *info); 761 762 /* ipc/mqueue.c */ 763 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); 764 asmlinkage long sys_mq_unlink(const char __user *name); 765 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); 766 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); 767 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); 768 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); 769 asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes, 770 char __user *u_msg_ptr, 771 unsigned int msg_len, unsigned int __user *u_msg_prio, 772 const struct old_timespec32 __user *u_abs_timeout); 773 asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes, 774 const char __user *u_msg_ptr, 775 unsigned int msg_len, unsigned int msg_prio, 776 const struct old_timespec32 __user *u_abs_timeout); 777 778 /* ipc/msg.c */ 779 asmlinkage long sys_msgget(key_t key, int msgflg); 780 asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 781 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 782 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, 783 size_t msgsz, long msgtyp, int msgflg); 784 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, 785 size_t msgsz, int msgflg); 786 787 /* ipc/sem.c */ 788 asmlinkage long sys_semget(key_t key, int nsems, int semflg); 789 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); 790 asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 791 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 792 unsigned nsops, 793 const struct __kernel_timespec __user *timeout); 794 asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops, 795 unsigned nsops, 796 const struct old_timespec32 __user *timeout); 797 asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 798 unsigned nsops); 799 800 /* ipc/shm.c */ 801 asmlinkage long sys_shmget(key_t key, size_t size, int flag); 802 asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 803 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 804 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); 805 asmlinkage long sys_shmdt(char __user *shmaddr); 806 807 /* net/socket.c */ 808 asmlinkage long sys_socket(int, int, int); 809 asmlinkage long sys_socketpair(int, int, int, int __user *); 810 asmlinkage long sys_bind(int, struct sockaddr __user *, int); 811 asmlinkage long sys_listen(int, int); 812 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); 813 asmlinkage long sys_connect(int, struct sockaddr __user *, int); 814 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); 815 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); 816 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, 817 struct sockaddr __user *, int); 818 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, 819 struct sockaddr __user *, int __user *); 820 asmlinkage long sys_setsockopt(int fd, int level, int optname, 821 char __user *optval, int optlen); 822 asmlinkage long sys_getsockopt(int fd, int level, int optname, 823 char __user *optval, int __user *optlen); 824 asmlinkage long sys_shutdown(int, int); 825 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 826 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 827 828 /* mm/filemap.c */ 829 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); 830 831 /* mm/nommu.c, also with MMU */ 832 asmlinkage long sys_brk(unsigned long brk); 833 asmlinkage long sys_munmap(unsigned long addr, size_t len); 834 asmlinkage long sys_mremap(unsigned long addr, 835 unsigned long old_len, unsigned long new_len, 836 unsigned long flags, unsigned long new_addr); 837 838 /* security/keys/keyctl.c */ 839 asmlinkage long sys_add_key(const char __user *_type, 840 const char __user *_description, 841 const void __user *_payload, 842 size_t plen, 843 key_serial_t destringid); 844 asmlinkage long sys_request_key(const char __user *_type, 845 const char __user *_description, 846 const char __user *_callout_info, 847 key_serial_t destringid); 848 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, 849 unsigned long arg4, unsigned long arg5); 850 851 /* arch/example/kernel/sys_example.c */ 852 #ifdef CONFIG_CLONE_BACKWARDS 853 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, 854 int __user *); 855 #else 856 #ifdef CONFIG_CLONE_BACKWARDS3 857 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, 858 int __user *, unsigned long); 859 #else 860 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, 861 int __user *, unsigned long); 862 #endif 863 #endif 864 865 asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size); 866 867 asmlinkage long sys_execve(const char __user *filename, 868 const char __user *const __user *argv, 869 const char __user *const __user *envp); 870 871 /* mm/fadvise.c */ 872 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 873 874 /* mm/, CONFIG_MMU only */ 875 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); 876 asmlinkage long sys_swapoff(const char __user *specialfile); 877 asmlinkage long sys_mprotect(unsigned long start, size_t len, 878 unsigned long prot); 879 asmlinkage long sys_msync(unsigned long start, size_t len, int flags); 880 asmlinkage long sys_mlock(unsigned long start, size_t len); 881 asmlinkage long sys_munlock(unsigned long start, size_t len); 882 asmlinkage long sys_mlockall(int flags); 883 asmlinkage long sys_munlockall(void); 884 asmlinkage long sys_mincore(unsigned long start, size_t len, 885 unsigned char __user * vec); 886 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); 887 asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec, 888 size_t vlen, int behavior, unsigned int flags); 889 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, 890 unsigned long prot, unsigned long pgoff, 891 unsigned long flags); 892 asmlinkage long sys_mbind(unsigned long start, unsigned long len, 893 unsigned long mode, 894 const unsigned long __user *nmask, 895 unsigned long maxnode, 896 unsigned flags); 897 asmlinkage long sys_get_mempolicy(int __user *policy, 898 unsigned long __user *nmask, 899 unsigned long maxnode, 900 unsigned long addr, unsigned long flags); 901 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, 902 unsigned long maxnode); 903 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, 904 const unsigned long __user *from, 905 const unsigned long __user *to); 906 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, 907 const void __user * __user *pages, 908 const int __user *nodes, 909 int __user *status, 910 int flags); 911 912 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, 913 siginfo_t __user *uinfo); 914 asmlinkage long sys_perf_event_open( 915 struct perf_event_attr __user *attr_uptr, 916 pid_t pid, int cpu, int group_fd, unsigned long flags); 917 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); 918 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, 919 unsigned int vlen, unsigned flags, 920 struct __kernel_timespec __user *timeout); 921 asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg, 922 unsigned int vlen, unsigned flags, 923 struct old_timespec32 __user *timeout); 924 925 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, 926 int options, struct rusage __user *ru); 927 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, 928 const struct rlimit64 __user *new_rlim, 929 struct rlimit64 __user *old_rlim); 930 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); 931 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, 932 u64 mask, int fd, 933 const char __user *pathname); 934 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, 935 struct file_handle __user *handle, 936 int __user *mnt_id, int flag); 937 asmlinkage long sys_open_by_handle_at(int mountdirfd, 938 struct file_handle __user *handle, 939 int flags); 940 asmlinkage long sys_clock_adjtime(clockid_t which_clock, 941 struct __kernel_timex __user *tx); 942 asmlinkage long sys_clock_adjtime32(clockid_t which_clock, 943 struct old_timex32 __user *tx); 944 asmlinkage long sys_syncfs(int fd); 945 asmlinkage long sys_setns(int fd, int nstype); 946 asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags); 947 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, 948 unsigned int vlen, unsigned flags); 949 asmlinkage long sys_process_vm_readv(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_process_vm_writev(pid_t pid, 956 const struct iovec __user *lvec, 957 unsigned long liovcnt, 958 const struct iovec __user *rvec, 959 unsigned long riovcnt, 960 unsigned long flags); 961 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, 962 unsigned long idx1, unsigned long idx2); 963 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); 964 asmlinkage long sys_sched_setattr(pid_t pid, 965 struct sched_attr __user *attr, 966 unsigned int flags); 967 asmlinkage long sys_sched_getattr(pid_t pid, 968 struct sched_attr __user *attr, 969 unsigned int size, 970 unsigned int flags); 971 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, 972 int newdfd, const char __user *newname, 973 unsigned int flags); 974 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, 975 void __user *uargs); 976 asmlinkage long sys_getrandom(char __user *buf, size_t count, 977 unsigned int flags); 978 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); 979 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); 980 asmlinkage long sys_execveat(int dfd, const char __user *filename, 981 const char __user *const __user *argv, 982 const char __user *const __user *envp, int flags); 983 asmlinkage long sys_userfaultfd(int flags); 984 asmlinkage long sys_membarrier(int cmd, unsigned int flags, int cpu_id); 985 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); 986 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, 987 int fd_out, loff_t __user *off_out, 988 size_t len, unsigned int flags); 989 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, 990 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 991 rwf_t flags); 992 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, 993 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 994 rwf_t flags); 995 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, 996 unsigned long prot, int pkey); 997 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); 998 asmlinkage long sys_pkey_free(int pkey); 999 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, 1000 unsigned mask, struct statx __user *buffer); 1001 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, 1002 int flags, uint32_t sig); 1003 asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags); 1004 asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path, 1005 int to_dfd, const char __user *to_path, 1006 unsigned int ms_flags); 1007 asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags); 1008 asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key, 1009 const void __user *value, int aux); 1010 asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags); 1011 asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags); 1012 asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, 1013 siginfo_t __user *info, 1014 unsigned int flags); 1015 asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags); 1016 1017 /* 1018 * Architecture-specific system calls 1019 */ 1020 1021 /* arch/x86/kernel/ioport.c */ 1022 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); 1023 1024 /* pciconfig: alpha, arm, arm64, ia64, sparc */ 1025 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, 1026 unsigned long off, unsigned long len, 1027 void __user *buf); 1028 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, 1029 unsigned long off, unsigned long len, 1030 void __user *buf); 1031 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); 1032 1033 /* powerpc */ 1034 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, 1035 __u32 __user *ustatus); 1036 asmlinkage long sys_spu_create(const char __user *name, 1037 unsigned int flags, umode_t mode, int fd); 1038 1039 1040 /* 1041 * Deprecated system calls which are still defined in 1042 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch 1043 */ 1044 1045 /* __ARCH_WANT_SYSCALL_NO_AT */ 1046 asmlinkage long sys_open(const char __user *filename, 1047 int flags, umode_t mode); 1048 asmlinkage long sys_link(const char __user *oldname, 1049 const char __user *newname); 1050 asmlinkage long sys_unlink(const char __user *pathname); 1051 asmlinkage long sys_mknod(const char __user *filename, umode_t mode, 1052 unsigned dev); 1053 asmlinkage long sys_chmod(const char __user *filename, umode_t mode); 1054 asmlinkage long sys_chown(const char __user *filename, 1055 uid_t user, gid_t group); 1056 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); 1057 asmlinkage long sys_rmdir(const char __user *pathname); 1058 asmlinkage long sys_lchown(const char __user *filename, 1059 uid_t user, gid_t group); 1060 asmlinkage long sys_access(const char __user *filename, int mode); 1061 asmlinkage long sys_rename(const char __user *oldname, 1062 const char __user *newname); 1063 asmlinkage long sys_symlink(const char __user *old, const char __user *new); 1064 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 1065 asmlinkage long sys_stat64(const char __user *filename, 1066 struct stat64 __user *statbuf); 1067 asmlinkage long sys_lstat64(const char __user *filename, 1068 struct stat64 __user *statbuf); 1069 #endif 1070 1071 /* __ARCH_WANT_SYSCALL_NO_FLAGS */ 1072 asmlinkage long sys_pipe(int __user *fildes); 1073 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); 1074 asmlinkage long sys_epoll_create(int size); 1075 asmlinkage long sys_inotify_init(void); 1076 asmlinkage long sys_eventfd(unsigned int count); 1077 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); 1078 1079 /* __ARCH_WANT_SYSCALL_OFF_T */ 1080 asmlinkage long sys_sendfile(int out_fd, int in_fd, 1081 off_t __user *offset, size_t count); 1082 asmlinkage long sys_newstat(const char __user *filename, 1083 struct stat __user *statbuf); 1084 asmlinkage long sys_newlstat(const char __user *filename, 1085 struct stat __user *statbuf); 1086 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); 1087 1088 /* __ARCH_WANT_SYSCALL_DEPRECATED */ 1089 asmlinkage long sys_alarm(unsigned int seconds); 1090 asmlinkage long sys_getpgrp(void); 1091 asmlinkage long sys_pause(void); 1092 asmlinkage long sys_time(__kernel_old_time_t __user *tloc); 1093 asmlinkage long sys_time32(old_time32_t __user *tloc); 1094 #ifdef __ARCH_WANT_SYS_UTIME 1095 asmlinkage long sys_utime(char __user *filename, 1096 struct utimbuf __user *times); 1097 asmlinkage long sys_utimes(char __user *filename, 1098 struct __kernel_old_timeval __user *utimes); 1099 asmlinkage long sys_futimesat(int dfd, const char __user *filename, 1100 struct __kernel_old_timeval __user *utimes); 1101 #endif 1102 asmlinkage long sys_futimesat_time32(unsigned int dfd, 1103 const char __user *filename, 1104 struct old_timeval32 __user *t); 1105 asmlinkage long sys_utime32(const char __user *filename, 1106 struct old_utimbuf32 __user *t); 1107 asmlinkage long sys_utimes_time32(const char __user *filename, 1108 struct old_timeval32 __user *t); 1109 asmlinkage long sys_creat(const char __user *pathname, umode_t mode); 1110 asmlinkage long sys_getdents(unsigned int fd, 1111 struct linux_dirent __user *dirent, 1112 unsigned int count); 1113 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, 1114 fd_set __user *exp, struct __kernel_old_timeval __user *tvp); 1115 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, 1116 int timeout); 1117 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, 1118 int maxevents, int timeout); 1119 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); 1120 asmlinkage long sys_vfork(void); 1121 asmlinkage long sys_recv(int, void __user *, size_t, unsigned); 1122 asmlinkage long sys_send(int, void __user *, size_t, unsigned); 1123 asmlinkage long sys_bdflush(int func, long data); 1124 asmlinkage long sys_oldumount(char __user *name); 1125 asmlinkage long sys_uselib(const char __user *library); 1126 asmlinkage long sys_sysfs(int option, 1127 unsigned long arg1, unsigned long arg2); 1128 asmlinkage long sys_fork(void); 1129 1130 /* obsolete: kernel/time/time.c */ 1131 asmlinkage long sys_stime(__kernel_old_time_t __user *tptr); 1132 asmlinkage long sys_stime32(old_time32_t __user *tptr); 1133 1134 /* obsolete: kernel/signal.c */ 1135 asmlinkage long sys_sigpending(old_sigset_t __user *uset); 1136 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, 1137 old_sigset_t __user *oset); 1138 #ifdef CONFIG_OLD_SIGSUSPEND 1139 asmlinkage long sys_sigsuspend(old_sigset_t mask); 1140 #endif 1141 1142 #ifdef CONFIG_OLD_SIGSUSPEND3 1143 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); 1144 #endif 1145 1146 #ifdef CONFIG_OLD_SIGACTION 1147 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, 1148 struct old_sigaction __user *); 1149 #endif 1150 asmlinkage long sys_sgetmask(void); 1151 asmlinkage long sys_ssetmask(int newmask); 1152 asmlinkage long sys_signal(int sig, __sighandler_t handler); 1153 1154 /* obsolete: kernel/sched/core.c */ 1155 asmlinkage long sys_nice(int increment); 1156 1157 /* obsolete: kernel/kexec_file.c */ 1158 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, 1159 unsigned long cmdline_len, 1160 const char __user *cmdline_ptr, 1161 unsigned long flags); 1162 1163 /* obsolete: kernel/exit.c */ 1164 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); 1165 1166 /* obsolete: kernel/uid16.c */ 1167 #ifdef CONFIG_HAVE_UID16 1168 asmlinkage long sys_chown16(const char __user *filename, 1169 old_uid_t user, old_gid_t group); 1170 asmlinkage long sys_lchown16(const char __user *filename, 1171 old_uid_t user, old_gid_t group); 1172 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); 1173 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); 1174 asmlinkage long sys_setgid16(old_gid_t gid); 1175 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); 1176 asmlinkage long sys_setuid16(old_uid_t uid); 1177 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); 1178 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, 1179 old_uid_t __user *euid, old_uid_t __user *suid); 1180 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); 1181 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, 1182 old_gid_t __user *egid, old_gid_t __user *sgid); 1183 asmlinkage long sys_setfsuid16(old_uid_t uid); 1184 asmlinkage long sys_setfsgid16(old_gid_t gid); 1185 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); 1186 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); 1187 asmlinkage long sys_getuid16(void); 1188 asmlinkage long sys_geteuid16(void); 1189 asmlinkage long sys_getgid16(void); 1190 asmlinkage long sys_getegid16(void); 1191 #endif 1192 1193 /* obsolete: net/socket.c */ 1194 asmlinkage long sys_socketcall(int call, unsigned long __user *args); 1195 1196 /* obsolete: fs/stat.c */ 1197 asmlinkage long sys_stat(const char __user *filename, 1198 struct __old_kernel_stat __user *statbuf); 1199 asmlinkage long sys_lstat(const char __user *filename, 1200 struct __old_kernel_stat __user *statbuf); 1201 asmlinkage long sys_fstat(unsigned int fd, 1202 struct __old_kernel_stat __user *statbuf); 1203 asmlinkage long sys_readlink(const char __user *path, 1204 char __user *buf, int bufsiz); 1205 1206 /* obsolete: fs/select.c */ 1207 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); 1208 1209 /* obsolete: fs/readdir.c */ 1210 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); 1211 1212 /* obsolete: kernel/sys.c */ 1213 asmlinkage long sys_gethostname(char __user *name, int len); 1214 asmlinkage long sys_uname(struct old_utsname __user *); 1215 asmlinkage long sys_olduname(struct oldold_utsname __user *); 1216 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT 1217 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); 1218 #endif 1219 1220 /* obsolete: ipc */ 1221 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, 1222 unsigned long third, void __user *ptr, long fifth); 1223 1224 /* obsolete: mm/ */ 1225 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, 1226 unsigned long prot, unsigned long flags, 1227 unsigned long fd, unsigned long pgoff); 1228 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); 1229 1230 1231 /* 1232 * Not a real system call, but a placeholder for syscalls which are 1233 * not implemented -- see kernel/sys_ni.c 1234 */ 1235 asmlinkage long sys_ni_syscall(void); 1236 1237 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 1238 1239 1240 /* 1241 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. 1242 * Instead, use one of the functions which work equivalently, such as 1243 * the ksys_xyzyyz() functions prototyped below. 1244 */ 1245 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); 1246 int ksys_fchown(unsigned int fd, uid_t user, gid_t group); 1247 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); 1248 void ksys_sync(void); 1249 int ksys_unshare(unsigned long unshare_flags); 1250 int ksys_setsid(void); 1251 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 1252 unsigned int flags); 1253 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, 1254 loff_t pos); 1255 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, 1256 size_t count, loff_t pos); 1257 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); 1258 #ifdef CONFIG_ADVISE_SYSCALLS 1259 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 1260 #else 1261 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, 1262 int advice) 1263 { 1264 return -EINVAL; 1265 } 1266 #endif 1267 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, 1268 unsigned long prot, unsigned long flags, 1269 unsigned long fd, unsigned long pgoff); 1270 ssize_t ksys_readahead(int fd, loff_t offset, size_t count); 1271 int ksys_ipc(unsigned int call, int first, unsigned long second, 1272 unsigned long third, void __user * ptr, long fifth); 1273 int compat_ksys_ipc(u32 call, int first, int second, 1274 u32 third, u32 ptr, u32 fifth); 1275 1276 /* 1277 * The following kernel syscall equivalents are just wrappers to fs-internal 1278 * functions. Therefore, provide stubs to be inlined at the callsites. 1279 */ 1280 extern int do_fchownat(int dfd, const char __user *filename, uid_t user, 1281 gid_t group, int flag); 1282 1283 static inline long ksys_chown(const char __user *filename, uid_t user, 1284 gid_t group) 1285 { 1286 return do_fchownat(AT_FDCWD, filename, user, group, 0); 1287 } 1288 1289 static inline long ksys_lchown(const char __user *filename, uid_t user, 1290 gid_t group) 1291 { 1292 return do_fchownat(AT_FDCWD, filename, user, group, 1293 AT_SYMLINK_NOFOLLOW); 1294 } 1295 1296 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); 1297 1298 static inline long ksys_ftruncate(unsigned int fd, loff_t length) 1299 { 1300 return do_sys_ftruncate(fd, length, 1); 1301 } 1302 1303 extern long do_sys_truncate(const char __user *pathname, loff_t length); 1304 1305 static inline long ksys_truncate(const char __user *pathname, loff_t length) 1306 { 1307 return do_sys_truncate(pathname, length); 1308 } 1309 1310 static inline unsigned int ksys_personality(unsigned int personality) 1311 { 1312 unsigned int old = current->personality; 1313 1314 if (personality != 0xffffffff) 1315 set_personality(personality); 1316 1317 return old; 1318 } 1319 1320 /* for __ARCH_WANT_SYS_IPC */ 1321 long ksys_semtimedop(int semid, struct sembuf __user *tsops, 1322 unsigned int nsops, 1323 const struct __kernel_timespec __user *timeout); 1324 long ksys_semget(key_t key, int nsems, int semflg); 1325 long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 1326 long ksys_msgget(key_t key, int msgflg); 1327 long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 1328 long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1329 long msgtyp, int msgflg); 1330 long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1331 int msgflg); 1332 long ksys_shmget(key_t key, size_t size, int shmflg); 1333 long ksys_shmdt(char __user *shmaddr); 1334 long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 1335 long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, 1336 unsigned int nsops, 1337 const struct old_timespec32 __user *timeout); 1338 1339 int __sys_getsockopt(int fd, int level, int optname, char __user *optval, 1340 int __user *optlen); 1341 int __sys_setsockopt(int fd, int level, int optname, char __user *optval, 1342 int optlen); 1343 #endif 1344