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 struct mount_attr; 72 73 #include <linux/types.h> 74 #include <linux/aio_abi.h> 75 #include <linux/capability.h> 76 #include <linux/signal.h> 77 #include <linux/list.h> 78 #include <linux/bug.h> 79 #include <linux/sem.h> 80 #include <asm/siginfo.h> 81 #include <linux/unistd.h> 82 #include <linux/quota.h> 83 #include <linux/key.h> 84 #include <linux/personality.h> 85 #include <trace/syscall.h> 86 87 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 88 /* 89 * It may be useful for an architecture to override the definitions of the 90 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a 91 * different calling convention for syscalls. To allow for that, the prototypes 92 * for the sys_*() functions below will *not* be included if 93 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 94 */ 95 #include <asm/syscall_wrapper.h> 96 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 97 98 /* 99 * __MAP - apply a macro to syscall arguments 100 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to 101 * m(t1, a1), m(t2, a2), ..., m(tn, an) 102 * The first argument must be equal to the amount of type/name 103 * pairs given. Note that this list of pairs (i.e. the arguments 104 * of __MAP starting at the third one) is in the same format as 105 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n> 106 */ 107 #define __MAP0(m,...) 108 #define __MAP1(m,t,a,...) m(t,a) 109 #define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__) 110 #define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__) 111 #define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__) 112 #define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__) 113 #define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__) 114 #define __MAP(n,...) __MAP##n(__VA_ARGS__) 115 116 #define __SC_DECL(t, a) t a 117 #define __TYPE_AS(t, v) __same_type((__force t)0, v) 118 #define __TYPE_IS_L(t) (__TYPE_AS(t, 0L)) 119 #define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL)) 120 #define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL)) 121 #define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a 122 #define __SC_CAST(t, a) (__force t) a 123 #define __SC_ARGS(t, a) a 124 #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long)) 125 126 #ifdef CONFIG_FTRACE_SYSCALLS 127 #define __SC_STR_ADECL(t, a) #a 128 #define __SC_STR_TDECL(t, a) #t 129 130 extern struct trace_event_class event_class_syscall_enter; 131 extern struct trace_event_class event_class_syscall_exit; 132 extern struct trace_event_functions enter_syscall_print_funcs; 133 extern struct trace_event_functions exit_syscall_print_funcs; 134 135 #define SYSCALL_TRACE_ENTER_EVENT(sname) \ 136 static struct syscall_metadata __syscall_meta_##sname; \ 137 static struct trace_event_call __used \ 138 event_enter_##sname = { \ 139 .class = &event_class_syscall_enter, \ 140 { \ 141 .name = "sys_enter"#sname, \ 142 }, \ 143 .event.funcs = &enter_syscall_print_funcs, \ 144 .data = (void *)&__syscall_meta_##sname,\ 145 .flags = TRACE_EVENT_FL_CAP_ANY, \ 146 }; \ 147 static struct trace_event_call __used \ 148 __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 __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 __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 /* For split 64-bit arguments on 32-bit architectures */ 256 #ifdef __LITTLE_ENDIAN 257 #define SC_ARG64(name) u32, name##_lo, u32, name##_hi 258 #else 259 #define SC_ARG64(name) u32, name##_hi, u32, name##_lo 260 #endif 261 #define SC_VAL64(type, name) ((type) name##_hi << 32 | name##_lo) 262 263 #ifdef CONFIG_COMPAT 264 #define SYSCALL32_DEFINE1 COMPAT_SYSCALL_DEFINE1 265 #define SYSCALL32_DEFINE2 COMPAT_SYSCALL_DEFINE2 266 #define SYSCALL32_DEFINE3 COMPAT_SYSCALL_DEFINE3 267 #define SYSCALL32_DEFINE4 COMPAT_SYSCALL_DEFINE4 268 #define SYSCALL32_DEFINE5 COMPAT_SYSCALL_DEFINE5 269 #define SYSCALL32_DEFINE6 COMPAT_SYSCALL_DEFINE6 270 #else 271 #define SYSCALL32_DEFINE1 SYSCALL_DEFINE1 272 #define SYSCALL32_DEFINE2 SYSCALL_DEFINE2 273 #define SYSCALL32_DEFINE3 SYSCALL_DEFINE3 274 #define SYSCALL32_DEFINE4 SYSCALL_DEFINE4 275 #define SYSCALL32_DEFINE5 SYSCALL_DEFINE5 276 #define SYSCALL32_DEFINE6 SYSCALL_DEFINE6 277 #endif 278 279 /* 280 * Called before coming back to user-mode. Returning to user-mode with an 281 * address limit different than USER_DS can allow to overwrite kernel memory. 282 */ 283 static inline void addr_limit_user_check(void) 284 { 285 #ifdef TIF_FSCHECK 286 if (!test_thread_flag(TIF_FSCHECK)) 287 return; 288 #endif 289 290 if (CHECK_DATA_CORRUPTION(uaccess_kernel(), 291 "Invalid address limit on user-mode return")) 292 force_sig(SIGKILL); 293 294 #ifdef TIF_FSCHECK 295 clear_thread_flag(TIF_FSCHECK); 296 #endif 297 } 298 299 /* 300 * These syscall function prototypes are kept in the same order as 301 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below, 302 * followed by deprecated or obsolete system calls. 303 * 304 * Please note that these prototypes here are only provided for information 305 * purposes, for static analysis, and for linking from the syscall table. 306 * These functions should not be called elsewhere from kernel code. 307 * 308 * As the syscall calling convention may be different from the default 309 * for architectures overriding the syscall calling convention, do not 310 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. 311 */ 312 #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER 313 asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); 314 asmlinkage long sys_io_destroy(aio_context_t ctx); 315 asmlinkage long sys_io_submit(aio_context_t, long, 316 struct iocb __user * __user *); 317 asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, 318 struct io_event __user *result); 319 asmlinkage long sys_io_getevents(aio_context_t ctx_id, 320 long min_nr, 321 long nr, 322 struct io_event __user *events, 323 struct __kernel_timespec __user *timeout); 324 asmlinkage long sys_io_getevents_time32(__u32 ctx_id, 325 __s32 min_nr, 326 __s32 nr, 327 struct io_event __user *events, 328 struct old_timespec32 __user *timeout); 329 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id, 330 long min_nr, 331 long nr, 332 struct io_event __user *events, 333 struct __kernel_timespec __user *timeout, 334 const struct __aio_sigset *sig); 335 asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id, 336 long min_nr, 337 long nr, 338 struct io_event __user *events, 339 struct old_timespec32 __user *timeout, 340 const struct __aio_sigset *sig); 341 asmlinkage long sys_io_uring_setup(u32 entries, 342 struct io_uring_params __user *p); 343 asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit, 344 u32 min_complete, u32 flags, 345 const void __user *argp, size_t argsz); 346 asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op, 347 void __user *arg, unsigned int nr_args); 348 349 /* fs/xattr.c */ 350 asmlinkage long sys_setxattr(const char __user *path, const char __user *name, 351 const void __user *value, size_t size, int flags); 352 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, 353 const void __user *value, size_t size, int flags); 354 asmlinkage long sys_fsetxattr(int fd, const char __user *name, 355 const void __user *value, size_t size, int flags); 356 asmlinkage long sys_getxattr(const char __user *path, const char __user *name, 357 void __user *value, size_t size); 358 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, 359 void __user *value, size_t size); 360 asmlinkage long sys_fgetxattr(int fd, const char __user *name, 361 void __user *value, size_t size); 362 asmlinkage long sys_listxattr(const char __user *path, char __user *list, 363 size_t size); 364 asmlinkage long sys_llistxattr(const char __user *path, char __user *list, 365 size_t size); 366 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); 367 asmlinkage long sys_removexattr(const char __user *path, 368 const char __user *name); 369 asmlinkage long sys_lremovexattr(const char __user *path, 370 const char __user *name); 371 asmlinkage long sys_fremovexattr(int fd, const char __user *name); 372 373 /* fs/dcache.c */ 374 asmlinkage long sys_getcwd(char __user *buf, unsigned long size); 375 376 /* fs/cookies.c */ 377 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); 378 379 /* fs/eventfd.c */ 380 asmlinkage long sys_eventfd2(unsigned int count, int flags); 381 382 /* fs/eventpoll.c */ 383 asmlinkage long sys_epoll_create1(int flags); 384 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, 385 struct epoll_event __user *event); 386 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, 387 int maxevents, int timeout, 388 const sigset_t __user *sigmask, 389 size_t sigsetsize); 390 asmlinkage long sys_epoll_pwait2(int epfd, struct epoll_event __user *events, 391 int maxevents, 392 const struct __kernel_timespec __user *timeout, 393 const sigset_t __user *sigmask, 394 size_t sigsetsize); 395 396 /* fs/fcntl.c */ 397 asmlinkage long sys_dup(unsigned int fildes); 398 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); 399 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); 400 #if BITS_PER_LONG == 32 401 asmlinkage long sys_fcntl64(unsigned int fd, 402 unsigned int cmd, unsigned long arg); 403 #endif 404 405 /* fs/inotify_user.c */ 406 asmlinkage long sys_inotify_init1(int flags); 407 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, 408 u32 mask); 409 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); 410 411 /* fs/ioctl.c */ 412 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, 413 unsigned long arg); 414 415 /* fs/ioprio.c */ 416 asmlinkage long sys_ioprio_set(int which, int who, int ioprio); 417 asmlinkage long sys_ioprio_get(int which, int who); 418 419 /* fs/locks.c */ 420 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); 421 422 /* fs/namei.c */ 423 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, 424 unsigned dev); 425 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); 426 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); 427 asmlinkage long sys_symlinkat(const char __user * oldname, 428 int newdfd, const char __user * newname); 429 asmlinkage long sys_linkat(int olddfd, const char __user *oldname, 430 int newdfd, const char __user *newname, int flags); 431 asmlinkage long sys_renameat(int olddfd, const char __user * oldname, 432 int newdfd, const char __user * newname); 433 434 /* fs/namespace.c */ 435 asmlinkage long sys_umount(char __user *name, int flags); 436 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, 437 char __user *type, unsigned long flags, 438 void __user *data); 439 asmlinkage long sys_pivot_root(const char __user *new_root, 440 const char __user *put_old); 441 442 /* fs/nfsctl.c */ 443 444 /* fs/open.c */ 445 asmlinkage long sys_statfs(const char __user * path, 446 struct statfs __user *buf); 447 asmlinkage long sys_statfs64(const char __user *path, size_t sz, 448 struct statfs64 __user *buf); 449 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); 450 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, 451 struct statfs64 __user *buf); 452 asmlinkage long sys_truncate(const char __user *path, long length); 453 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); 454 #if BITS_PER_LONG == 32 455 asmlinkage long sys_truncate64(const char __user *path, loff_t length); 456 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); 457 #endif 458 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); 459 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); 460 asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode, 461 int flags); 462 asmlinkage long sys_chdir(const char __user *filename); 463 asmlinkage long sys_fchdir(unsigned int fd); 464 asmlinkage long sys_chroot(const char __user *filename); 465 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); 466 asmlinkage long sys_fchmodat(int dfd, const char __user * filename, 467 umode_t mode); 468 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, 469 gid_t group, int flag); 470 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); 471 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, 472 umode_t mode); 473 asmlinkage long sys_openat2(int dfd, const char __user *filename, 474 struct open_how *how, size_t size); 475 asmlinkage long sys_close(unsigned int fd); 476 asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd, 477 unsigned int flags); 478 asmlinkage long sys_vhangup(void); 479 480 /* fs/pipe.c */ 481 asmlinkage long sys_pipe2(int __user *fildes, int flags); 482 483 /* fs/quota.c */ 484 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, 485 qid_t id, void __user *addr); 486 487 /* fs/readdir.c */ 488 asmlinkage long sys_getdents64(unsigned int fd, 489 struct linux_dirent64 __user *dirent, 490 unsigned int count); 491 492 /* fs/read_write.c */ 493 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, 494 unsigned long offset_low, loff_t __user *result, 495 unsigned int whence); 496 asmlinkage long sys_lseek(unsigned int fd, off_t offset, 497 unsigned int whence); 498 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); 499 asmlinkage long sys_write(unsigned int fd, const char __user *buf, 500 size_t count); 501 asmlinkage long sys_readv(unsigned long fd, 502 const struct iovec __user *vec, 503 unsigned long vlen); 504 asmlinkage long sys_writev(unsigned long fd, 505 const struct iovec __user *vec, 506 unsigned long vlen); 507 asmlinkage long sys_pread64(unsigned int fd, char __user *buf, 508 size_t count, loff_t pos); 509 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, 510 size_t count, loff_t pos); 511 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, 512 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 513 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, 514 unsigned long vlen, unsigned long pos_l, unsigned long pos_h); 515 516 /* fs/sendfile.c */ 517 asmlinkage long sys_sendfile64(int out_fd, int in_fd, 518 loff_t __user *offset, size_t count); 519 520 /* fs/select.c */ 521 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, 522 fd_set __user *, struct __kernel_timespec __user *, 523 void __user *); 524 asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *, 525 fd_set __user *, struct old_timespec32 __user *, 526 void __user *); 527 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, 528 struct __kernel_timespec __user *, const sigset_t __user *, 529 size_t); 530 asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int, 531 struct old_timespec32 __user *, const sigset_t __user *, 532 size_t); 533 534 /* fs/signalfd.c */ 535 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); 536 537 /* fs/splice.c */ 538 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, 539 unsigned long nr_segs, unsigned int flags); 540 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, 541 int fd_out, loff_t __user *off_out, 542 size_t len, unsigned int flags); 543 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); 544 545 /* fs/stat.c */ 546 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, 547 int bufsiz); 548 asmlinkage long sys_newfstatat(int dfd, const char __user *filename, 549 struct stat __user *statbuf, int flag); 550 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); 551 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 552 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); 553 asmlinkage long sys_fstatat64(int dfd, const char __user *filename, 554 struct stat64 __user *statbuf, int flag); 555 #endif 556 557 /* fs/sync.c */ 558 asmlinkage long sys_sync(void); 559 asmlinkage long sys_fsync(unsigned int fd); 560 asmlinkage long sys_fdatasync(unsigned int fd); 561 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, 562 loff_t offset, loff_t nbytes); 563 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 564 unsigned int flags); 565 566 /* fs/timerfd.c */ 567 asmlinkage long sys_timerfd_create(int clockid, int flags); 568 asmlinkage long sys_timerfd_settime(int ufd, int flags, 569 const struct __kernel_itimerspec __user *utmr, 570 struct __kernel_itimerspec __user *otmr); 571 asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr); 572 asmlinkage long sys_timerfd_gettime32(int ufd, 573 struct old_itimerspec32 __user *otmr); 574 asmlinkage long sys_timerfd_settime32(int ufd, int flags, 575 const struct old_itimerspec32 __user *utmr, 576 struct old_itimerspec32 __user *otmr); 577 578 /* fs/utimes.c */ 579 asmlinkage long sys_utimensat(int dfd, const char __user *filename, 580 struct __kernel_timespec __user *utimes, 581 int flags); 582 asmlinkage long sys_utimensat_time32(unsigned int dfd, 583 const char __user *filename, 584 struct old_timespec32 __user *t, int flags); 585 586 /* kernel/acct.c */ 587 asmlinkage long sys_acct(const char __user *name); 588 589 /* kernel/capability.c */ 590 asmlinkage long sys_capget(cap_user_header_t header, 591 cap_user_data_t dataptr); 592 asmlinkage long sys_capset(cap_user_header_t header, 593 const cap_user_data_t data); 594 595 /* kernel/exec_domain.c */ 596 asmlinkage long sys_personality(unsigned int personality); 597 598 /* kernel/exit.c */ 599 asmlinkage long sys_exit(int error_code); 600 asmlinkage long sys_exit_group(int error_code); 601 asmlinkage long sys_waitid(int which, pid_t pid, 602 struct siginfo __user *infop, 603 int options, struct rusage __user *ru); 604 605 /* kernel/fork.c */ 606 asmlinkage long sys_set_tid_address(int __user *tidptr); 607 asmlinkage long sys_unshare(unsigned long unshare_flags); 608 609 /* kernel/futex.c */ 610 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, 611 const struct __kernel_timespec __user *utime, 612 u32 __user *uaddr2, u32 val3); 613 asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val, 614 const struct old_timespec32 __user *utime, 615 u32 __user *uaddr2, u32 val3); 616 asmlinkage long sys_get_robust_list(int pid, 617 struct robust_list_head __user * __user *head_ptr, 618 size_t __user *len_ptr); 619 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, 620 size_t len); 621 622 /* kernel/hrtimer.c */ 623 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, 624 struct __kernel_timespec __user *rmtp); 625 asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp, 626 struct old_timespec32 __user *rmtp); 627 628 /* kernel/itimer.c */ 629 asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value); 630 asmlinkage long sys_setitimer(int which, 631 struct __kernel_old_itimerval __user *value, 632 struct __kernel_old_itimerval __user *ovalue); 633 634 /* kernel/kexec.c */ 635 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, 636 struct kexec_segment __user *segments, 637 unsigned long flags); 638 639 /* kernel/module.c */ 640 asmlinkage long sys_init_module(void __user *umod, unsigned long len, 641 const char __user *uargs); 642 asmlinkage long sys_delete_module(const char __user *name_user, 643 unsigned int flags); 644 645 /* kernel/posix-timers.c */ 646 asmlinkage long sys_timer_create(clockid_t which_clock, 647 struct sigevent __user *timer_event_spec, 648 timer_t __user * created_timer_id); 649 asmlinkage long sys_timer_gettime(timer_t timer_id, 650 struct __kernel_itimerspec __user *setting); 651 asmlinkage long sys_timer_getoverrun(timer_t timer_id); 652 asmlinkage long sys_timer_settime(timer_t timer_id, int flags, 653 const struct __kernel_itimerspec __user *new_setting, 654 struct __kernel_itimerspec __user *old_setting); 655 asmlinkage long sys_timer_delete(timer_t timer_id); 656 asmlinkage long sys_clock_settime(clockid_t which_clock, 657 const struct __kernel_timespec __user *tp); 658 asmlinkage long sys_clock_gettime(clockid_t which_clock, 659 struct __kernel_timespec __user *tp); 660 asmlinkage long sys_clock_getres(clockid_t which_clock, 661 struct __kernel_timespec __user *tp); 662 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, 663 const struct __kernel_timespec __user *rqtp, 664 struct __kernel_timespec __user *rmtp); 665 asmlinkage long sys_timer_gettime32(timer_t timer_id, 666 struct old_itimerspec32 __user *setting); 667 asmlinkage long sys_timer_settime32(timer_t timer_id, int flags, 668 struct old_itimerspec32 __user *new, 669 struct old_itimerspec32 __user *old); 670 asmlinkage long sys_clock_settime32(clockid_t which_clock, 671 struct old_timespec32 __user *tp); 672 asmlinkage long sys_clock_gettime32(clockid_t which_clock, 673 struct old_timespec32 __user *tp); 674 asmlinkage long sys_clock_getres_time32(clockid_t which_clock, 675 struct old_timespec32 __user *tp); 676 asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags, 677 struct old_timespec32 __user *rqtp, 678 struct old_timespec32 __user *rmtp); 679 680 /* kernel/printk.c */ 681 asmlinkage long sys_syslog(int type, char __user *buf, int len); 682 683 /* kernel/ptrace.c */ 684 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, 685 unsigned long data); 686 /* kernel/sched/core.c */ 687 688 asmlinkage long sys_sched_setparam(pid_t pid, 689 struct sched_param __user *param); 690 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, 691 struct sched_param __user *param); 692 asmlinkage long sys_sched_getscheduler(pid_t pid); 693 asmlinkage long sys_sched_getparam(pid_t pid, 694 struct sched_param __user *param); 695 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, 696 unsigned long __user *user_mask_ptr); 697 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, 698 unsigned long __user *user_mask_ptr); 699 asmlinkage long sys_sched_yield(void); 700 asmlinkage long sys_sched_get_priority_max(int policy); 701 asmlinkage long sys_sched_get_priority_min(int policy); 702 asmlinkage long sys_sched_rr_get_interval(pid_t pid, 703 struct __kernel_timespec __user *interval); 704 asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid, 705 struct old_timespec32 __user *interval); 706 707 /* kernel/signal.c */ 708 asmlinkage long sys_restart_syscall(void); 709 asmlinkage long sys_kill(pid_t pid, int sig); 710 asmlinkage long sys_tkill(pid_t pid, int sig); 711 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); 712 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, 713 struct sigaltstack __user *uoss); 714 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); 715 #ifndef CONFIG_ODD_RT_SIGACTION 716 asmlinkage long sys_rt_sigaction(int, 717 const struct sigaction __user *, 718 struct sigaction __user *, 719 size_t); 720 #endif 721 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, 722 sigset_t __user *oset, size_t sigsetsize); 723 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); 724 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, 725 siginfo_t __user *uinfo, 726 const struct __kernel_timespec __user *uts, 727 size_t sigsetsize); 728 asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese, 729 siginfo_t __user *uinfo, 730 const struct old_timespec32 __user *uts, 731 size_t sigsetsize); 732 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); 733 734 /* kernel/sys.c */ 735 asmlinkage long sys_setpriority(int which, int who, int niceval); 736 asmlinkage long sys_getpriority(int which, int who); 737 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, 738 void __user *arg); 739 asmlinkage long sys_setregid(gid_t rgid, gid_t egid); 740 asmlinkage long sys_setgid(gid_t gid); 741 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); 742 asmlinkage long sys_setuid(uid_t uid); 743 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); 744 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); 745 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); 746 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); 747 asmlinkage long sys_setfsuid(uid_t uid); 748 asmlinkage long sys_setfsgid(gid_t gid); 749 asmlinkage long sys_times(struct tms __user *tbuf); 750 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); 751 asmlinkage long sys_getpgid(pid_t pid); 752 asmlinkage long sys_getsid(pid_t pid); 753 asmlinkage long sys_setsid(void); 754 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 755 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); 756 asmlinkage long sys_newuname(struct new_utsname __user *name); 757 asmlinkage long sys_sethostname(char __user *name, int len); 758 asmlinkage long sys_setdomainname(char __user *name, int len); 759 asmlinkage long sys_getrlimit(unsigned int resource, 760 struct rlimit __user *rlim); 761 asmlinkage long sys_setrlimit(unsigned int resource, 762 struct rlimit __user *rlim); 763 asmlinkage long sys_getrusage(int who, struct rusage __user *ru); 764 asmlinkage long sys_umask(int mask); 765 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, 766 unsigned long arg4, unsigned long arg5); 767 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); 768 769 /* kernel/time.c */ 770 asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv, 771 struct timezone __user *tz); 772 asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv, 773 struct timezone __user *tz); 774 asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p); 775 asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p); 776 777 /* kernel/sys.c */ 778 asmlinkage long sys_getpid(void); 779 asmlinkage long sys_getppid(void); 780 asmlinkage long sys_getuid(void); 781 asmlinkage long sys_geteuid(void); 782 asmlinkage long sys_getgid(void); 783 asmlinkage long sys_getegid(void); 784 asmlinkage long sys_gettid(void); 785 asmlinkage long sys_sysinfo(struct sysinfo __user *info); 786 787 /* ipc/mqueue.c */ 788 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); 789 asmlinkage long sys_mq_unlink(const char __user *name); 790 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); 791 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); 792 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); 793 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); 794 asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes, 795 char __user *u_msg_ptr, 796 unsigned int msg_len, unsigned int __user *u_msg_prio, 797 const struct old_timespec32 __user *u_abs_timeout); 798 asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes, 799 const char __user *u_msg_ptr, 800 unsigned int msg_len, unsigned int msg_prio, 801 const struct old_timespec32 __user *u_abs_timeout); 802 803 /* ipc/msg.c */ 804 asmlinkage long sys_msgget(key_t key, int msgflg); 805 asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 806 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 807 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, 808 size_t msgsz, long msgtyp, int msgflg); 809 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, 810 size_t msgsz, int msgflg); 811 812 /* ipc/sem.c */ 813 asmlinkage long sys_semget(key_t key, int nsems, int semflg); 814 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); 815 asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 816 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 817 unsigned nsops, 818 const struct __kernel_timespec __user *timeout); 819 asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops, 820 unsigned nsops, 821 const struct old_timespec32 __user *timeout); 822 asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 823 unsigned nsops); 824 825 /* ipc/shm.c */ 826 asmlinkage long sys_shmget(key_t key, size_t size, int flag); 827 asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 828 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 829 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); 830 asmlinkage long sys_shmdt(char __user *shmaddr); 831 832 /* net/socket.c */ 833 asmlinkage long sys_socket(int, int, int); 834 asmlinkage long sys_socketpair(int, int, int, int __user *); 835 asmlinkage long sys_bind(int, struct sockaddr __user *, int); 836 asmlinkage long sys_listen(int, int); 837 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); 838 asmlinkage long sys_connect(int, struct sockaddr __user *, int); 839 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); 840 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); 841 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, 842 struct sockaddr __user *, int); 843 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, 844 struct sockaddr __user *, int __user *); 845 asmlinkage long sys_setsockopt(int fd, int level, int optname, 846 char __user *optval, int optlen); 847 asmlinkage long sys_getsockopt(int fd, int level, int optname, 848 char __user *optval, int __user *optlen); 849 asmlinkage long sys_shutdown(int, int); 850 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 851 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); 852 853 /* mm/filemap.c */ 854 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); 855 856 /* mm/nommu.c, also with MMU */ 857 asmlinkage long sys_brk(unsigned long brk); 858 asmlinkage long sys_munmap(unsigned long addr, size_t len); 859 asmlinkage long sys_mremap(unsigned long addr, 860 unsigned long old_len, unsigned long new_len, 861 unsigned long flags, unsigned long new_addr); 862 863 /* security/keys/keyctl.c */ 864 asmlinkage long sys_add_key(const char __user *_type, 865 const char __user *_description, 866 const void __user *_payload, 867 size_t plen, 868 key_serial_t destringid); 869 asmlinkage long sys_request_key(const char __user *_type, 870 const char __user *_description, 871 const char __user *_callout_info, 872 key_serial_t destringid); 873 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, 874 unsigned long arg4, unsigned long arg5); 875 876 /* arch/example/kernel/sys_example.c */ 877 #ifdef CONFIG_CLONE_BACKWARDS 878 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, 879 int __user *); 880 #else 881 #ifdef CONFIG_CLONE_BACKWARDS3 882 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, 883 int __user *, unsigned long); 884 #else 885 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, 886 int __user *, unsigned long); 887 #endif 888 #endif 889 890 asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size); 891 892 asmlinkage long sys_execve(const char __user *filename, 893 const char __user *const __user *argv, 894 const char __user *const __user *envp); 895 896 /* mm/fadvise.c */ 897 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 898 899 /* mm/, CONFIG_MMU only */ 900 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); 901 asmlinkage long sys_swapoff(const char __user *specialfile); 902 asmlinkage long sys_mprotect(unsigned long start, size_t len, 903 unsigned long prot); 904 asmlinkage long sys_msync(unsigned long start, size_t len, int flags); 905 asmlinkage long sys_mlock(unsigned long start, size_t len); 906 asmlinkage long sys_munlock(unsigned long start, size_t len); 907 asmlinkage long sys_mlockall(int flags); 908 asmlinkage long sys_munlockall(void); 909 asmlinkage long sys_mincore(unsigned long start, size_t len, 910 unsigned char __user * vec); 911 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); 912 asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec, 913 size_t vlen, int behavior, unsigned int flags); 914 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, 915 unsigned long prot, unsigned long pgoff, 916 unsigned long flags); 917 asmlinkage long sys_mbind(unsigned long start, unsigned long len, 918 unsigned long mode, 919 const unsigned long __user *nmask, 920 unsigned long maxnode, 921 unsigned flags); 922 asmlinkage long sys_get_mempolicy(int __user *policy, 923 unsigned long __user *nmask, 924 unsigned long maxnode, 925 unsigned long addr, unsigned long flags); 926 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, 927 unsigned long maxnode); 928 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, 929 const unsigned long __user *from, 930 const unsigned long __user *to); 931 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, 932 const void __user * __user *pages, 933 const int __user *nodes, 934 int __user *status, 935 int flags); 936 937 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, 938 siginfo_t __user *uinfo); 939 asmlinkage long sys_perf_event_open( 940 struct perf_event_attr __user *attr_uptr, 941 pid_t pid, int cpu, int group_fd, unsigned long flags); 942 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); 943 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, 944 unsigned int vlen, unsigned flags, 945 struct __kernel_timespec __user *timeout); 946 asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg, 947 unsigned int vlen, unsigned flags, 948 struct old_timespec32 __user *timeout); 949 950 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, 951 int options, struct rusage __user *ru); 952 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, 953 const struct rlimit64 __user *new_rlim, 954 struct rlimit64 __user *old_rlim); 955 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); 956 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, 957 u64 mask, int fd, 958 const char __user *pathname); 959 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, 960 struct file_handle __user *handle, 961 int __user *mnt_id, int flag); 962 asmlinkage long sys_open_by_handle_at(int mountdirfd, 963 struct file_handle __user *handle, 964 int flags); 965 asmlinkage long sys_clock_adjtime(clockid_t which_clock, 966 struct __kernel_timex __user *tx); 967 asmlinkage long sys_clock_adjtime32(clockid_t which_clock, 968 struct old_timex32 __user *tx); 969 asmlinkage long sys_syncfs(int fd); 970 asmlinkage long sys_setns(int fd, int nstype); 971 asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags); 972 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, 973 unsigned int vlen, unsigned flags); 974 asmlinkage long sys_process_vm_readv(pid_t pid, 975 const struct iovec __user *lvec, 976 unsigned long liovcnt, 977 const struct iovec __user *rvec, 978 unsigned long riovcnt, 979 unsigned long flags); 980 asmlinkage long sys_process_vm_writev(pid_t pid, 981 const struct iovec __user *lvec, 982 unsigned long liovcnt, 983 const struct iovec __user *rvec, 984 unsigned long riovcnt, 985 unsigned long flags); 986 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, 987 unsigned long idx1, unsigned long idx2); 988 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); 989 asmlinkage long sys_sched_setattr(pid_t pid, 990 struct sched_attr __user *attr, 991 unsigned int flags); 992 asmlinkage long sys_sched_getattr(pid_t pid, 993 struct sched_attr __user *attr, 994 unsigned int size, 995 unsigned int flags); 996 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, 997 int newdfd, const char __user *newname, 998 unsigned int flags); 999 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, 1000 void __user *uargs); 1001 asmlinkage long sys_getrandom(char __user *buf, size_t count, 1002 unsigned int flags); 1003 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); 1004 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1005 asmlinkage long sys_execveat(int dfd, const char __user *filename, 1006 const char __user *const __user *argv, 1007 const char __user *const __user *envp, int flags); 1008 asmlinkage long sys_userfaultfd(int flags); 1009 asmlinkage long sys_membarrier(int cmd, unsigned int flags, int cpu_id); 1010 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); 1011 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, 1012 int fd_out, loff_t __user *off_out, 1013 size_t len, unsigned int flags); 1014 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, 1015 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 1016 rwf_t flags); 1017 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, 1018 unsigned long vlen, unsigned long pos_l, unsigned long pos_h, 1019 rwf_t flags); 1020 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, 1021 unsigned long prot, int pkey); 1022 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); 1023 asmlinkage long sys_pkey_free(int pkey); 1024 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, 1025 unsigned mask, struct statx __user *buffer); 1026 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, 1027 int flags, uint32_t sig); 1028 asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags); 1029 asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path, 1030 int to_dfd, const char __user *to_path, 1031 unsigned int ms_flags); 1032 asmlinkage long sys_mount_setattr(int dfd, const char __user *path, 1033 unsigned int flags, 1034 struct mount_attr __user *uattr, size_t usize); 1035 asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags); 1036 asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key, 1037 const void __user *value, int aux); 1038 asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags); 1039 asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags); 1040 asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, 1041 siginfo_t __user *info, 1042 unsigned int flags); 1043 asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags); 1044 1045 /* 1046 * Architecture-specific system calls 1047 */ 1048 1049 /* arch/x86/kernel/ioport.c */ 1050 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); 1051 1052 /* pciconfig: alpha, arm, arm64, ia64, sparc */ 1053 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, 1054 unsigned long off, unsigned long len, 1055 void __user *buf); 1056 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, 1057 unsigned long off, unsigned long len, 1058 void __user *buf); 1059 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); 1060 1061 /* powerpc */ 1062 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, 1063 __u32 __user *ustatus); 1064 asmlinkage long sys_spu_create(const char __user *name, 1065 unsigned int flags, umode_t mode, int fd); 1066 1067 1068 /* 1069 * Deprecated system calls which are still defined in 1070 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch 1071 */ 1072 1073 /* __ARCH_WANT_SYSCALL_NO_AT */ 1074 asmlinkage long sys_open(const char __user *filename, 1075 int flags, umode_t mode); 1076 asmlinkage long sys_link(const char __user *oldname, 1077 const char __user *newname); 1078 asmlinkage long sys_unlink(const char __user *pathname); 1079 asmlinkage long sys_mknod(const char __user *filename, umode_t mode, 1080 unsigned dev); 1081 asmlinkage long sys_chmod(const char __user *filename, umode_t mode); 1082 asmlinkage long sys_chown(const char __user *filename, 1083 uid_t user, gid_t group); 1084 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); 1085 asmlinkage long sys_rmdir(const char __user *pathname); 1086 asmlinkage long sys_lchown(const char __user *filename, 1087 uid_t user, gid_t group); 1088 asmlinkage long sys_access(const char __user *filename, int mode); 1089 asmlinkage long sys_rename(const char __user *oldname, 1090 const char __user *newname); 1091 asmlinkage long sys_symlink(const char __user *old, const char __user *new); 1092 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) 1093 asmlinkage long sys_stat64(const char __user *filename, 1094 struct stat64 __user *statbuf); 1095 asmlinkage long sys_lstat64(const char __user *filename, 1096 struct stat64 __user *statbuf); 1097 #endif 1098 1099 /* __ARCH_WANT_SYSCALL_NO_FLAGS */ 1100 asmlinkage long sys_pipe(int __user *fildes); 1101 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); 1102 asmlinkage long sys_epoll_create(int size); 1103 asmlinkage long sys_inotify_init(void); 1104 asmlinkage long sys_eventfd(unsigned int count); 1105 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); 1106 1107 /* __ARCH_WANT_SYSCALL_OFF_T */ 1108 asmlinkage long sys_sendfile(int out_fd, int in_fd, 1109 off_t __user *offset, size_t count); 1110 asmlinkage long sys_newstat(const char __user *filename, 1111 struct stat __user *statbuf); 1112 asmlinkage long sys_newlstat(const char __user *filename, 1113 struct stat __user *statbuf); 1114 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); 1115 1116 /* __ARCH_WANT_SYSCALL_DEPRECATED */ 1117 asmlinkage long sys_alarm(unsigned int seconds); 1118 asmlinkage long sys_getpgrp(void); 1119 asmlinkage long sys_pause(void); 1120 asmlinkage long sys_time(__kernel_old_time_t __user *tloc); 1121 asmlinkage long sys_time32(old_time32_t __user *tloc); 1122 #ifdef __ARCH_WANT_SYS_UTIME 1123 asmlinkage long sys_utime(char __user *filename, 1124 struct utimbuf __user *times); 1125 asmlinkage long sys_utimes(char __user *filename, 1126 struct __kernel_old_timeval __user *utimes); 1127 asmlinkage long sys_futimesat(int dfd, const char __user *filename, 1128 struct __kernel_old_timeval __user *utimes); 1129 #endif 1130 asmlinkage long sys_futimesat_time32(unsigned int dfd, 1131 const char __user *filename, 1132 struct old_timeval32 __user *t); 1133 asmlinkage long sys_utime32(const char __user *filename, 1134 struct old_utimbuf32 __user *t); 1135 asmlinkage long sys_utimes_time32(const char __user *filename, 1136 struct old_timeval32 __user *t); 1137 asmlinkage long sys_creat(const char __user *pathname, umode_t mode); 1138 asmlinkage long sys_getdents(unsigned int fd, 1139 struct linux_dirent __user *dirent, 1140 unsigned int count); 1141 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, 1142 fd_set __user *exp, struct __kernel_old_timeval __user *tvp); 1143 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, 1144 int timeout); 1145 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, 1146 int maxevents, int timeout); 1147 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); 1148 asmlinkage long sys_vfork(void); 1149 asmlinkage long sys_recv(int, void __user *, size_t, unsigned); 1150 asmlinkage long sys_send(int, void __user *, size_t, unsigned); 1151 asmlinkage long sys_bdflush(int func, long data); 1152 asmlinkage long sys_oldumount(char __user *name); 1153 asmlinkage long sys_uselib(const char __user *library); 1154 asmlinkage long sys_sysfs(int option, 1155 unsigned long arg1, unsigned long arg2); 1156 asmlinkage long sys_fork(void); 1157 1158 /* obsolete: kernel/time/time.c */ 1159 asmlinkage long sys_stime(__kernel_old_time_t __user *tptr); 1160 asmlinkage long sys_stime32(old_time32_t __user *tptr); 1161 1162 /* obsolete: kernel/signal.c */ 1163 asmlinkage long sys_sigpending(old_sigset_t __user *uset); 1164 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, 1165 old_sigset_t __user *oset); 1166 #ifdef CONFIG_OLD_SIGSUSPEND 1167 asmlinkage long sys_sigsuspend(old_sigset_t mask); 1168 #endif 1169 1170 #ifdef CONFIG_OLD_SIGSUSPEND3 1171 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); 1172 #endif 1173 1174 #ifdef CONFIG_OLD_SIGACTION 1175 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, 1176 struct old_sigaction __user *); 1177 #endif 1178 asmlinkage long sys_sgetmask(void); 1179 asmlinkage long sys_ssetmask(int newmask); 1180 asmlinkage long sys_signal(int sig, __sighandler_t handler); 1181 1182 /* obsolete: kernel/sched/core.c */ 1183 asmlinkage long sys_nice(int increment); 1184 1185 /* obsolete: kernel/kexec_file.c */ 1186 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, 1187 unsigned long cmdline_len, 1188 const char __user *cmdline_ptr, 1189 unsigned long flags); 1190 1191 /* obsolete: kernel/exit.c */ 1192 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); 1193 1194 /* obsolete: kernel/uid16.c */ 1195 #ifdef CONFIG_HAVE_UID16 1196 asmlinkage long sys_chown16(const char __user *filename, 1197 old_uid_t user, old_gid_t group); 1198 asmlinkage long sys_lchown16(const char __user *filename, 1199 old_uid_t user, old_gid_t group); 1200 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); 1201 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); 1202 asmlinkage long sys_setgid16(old_gid_t gid); 1203 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); 1204 asmlinkage long sys_setuid16(old_uid_t uid); 1205 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); 1206 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, 1207 old_uid_t __user *euid, old_uid_t __user *suid); 1208 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); 1209 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, 1210 old_gid_t __user *egid, old_gid_t __user *sgid); 1211 asmlinkage long sys_setfsuid16(old_uid_t uid); 1212 asmlinkage long sys_setfsgid16(old_gid_t gid); 1213 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); 1214 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); 1215 asmlinkage long sys_getuid16(void); 1216 asmlinkage long sys_geteuid16(void); 1217 asmlinkage long sys_getgid16(void); 1218 asmlinkage long sys_getegid16(void); 1219 #endif 1220 1221 /* obsolete: net/socket.c */ 1222 asmlinkage long sys_socketcall(int call, unsigned long __user *args); 1223 1224 /* obsolete: fs/stat.c */ 1225 asmlinkage long sys_stat(const char __user *filename, 1226 struct __old_kernel_stat __user *statbuf); 1227 asmlinkage long sys_lstat(const char __user *filename, 1228 struct __old_kernel_stat __user *statbuf); 1229 asmlinkage long sys_fstat(unsigned int fd, 1230 struct __old_kernel_stat __user *statbuf); 1231 asmlinkage long sys_readlink(const char __user *path, 1232 char __user *buf, int bufsiz); 1233 1234 /* obsolete: fs/select.c */ 1235 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); 1236 1237 /* obsolete: fs/readdir.c */ 1238 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); 1239 1240 /* obsolete: kernel/sys.c */ 1241 asmlinkage long sys_gethostname(char __user *name, int len); 1242 asmlinkage long sys_uname(struct old_utsname __user *); 1243 asmlinkage long sys_olduname(struct oldold_utsname __user *); 1244 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT 1245 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); 1246 #endif 1247 1248 /* obsolete: ipc */ 1249 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, 1250 unsigned long third, void __user *ptr, long fifth); 1251 1252 /* obsolete: mm/ */ 1253 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, 1254 unsigned long prot, unsigned long flags, 1255 unsigned long fd, unsigned long pgoff); 1256 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); 1257 1258 1259 /* 1260 * Not a real system call, but a placeholder for syscalls which are 1261 * not implemented -- see kernel/sys_ni.c 1262 */ 1263 asmlinkage long sys_ni_syscall(void); 1264 1265 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ 1266 1267 1268 /* 1269 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. 1270 * Instead, use one of the functions which work equivalently, such as 1271 * the ksys_xyzyyz() functions prototyped below. 1272 */ 1273 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count); 1274 int ksys_fchown(unsigned int fd, uid_t user, gid_t group); 1275 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); 1276 void ksys_sync(void); 1277 int ksys_unshare(unsigned long unshare_flags); 1278 int ksys_setsid(void); 1279 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 1280 unsigned int flags); 1281 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count, 1282 loff_t pos); 1283 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, 1284 size_t count, loff_t pos); 1285 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len); 1286 #ifdef CONFIG_ADVISE_SYSCALLS 1287 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); 1288 #else 1289 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, 1290 int advice) 1291 { 1292 return -EINVAL; 1293 } 1294 #endif 1295 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, 1296 unsigned long prot, unsigned long flags, 1297 unsigned long fd, unsigned long pgoff); 1298 ssize_t ksys_readahead(int fd, loff_t offset, size_t count); 1299 int ksys_ipc(unsigned int call, int first, unsigned long second, 1300 unsigned long third, void __user * ptr, long fifth); 1301 int compat_ksys_ipc(u32 call, int first, int second, 1302 u32 third, u32 ptr, u32 fifth); 1303 1304 /* 1305 * The following kernel syscall equivalents are just wrappers to fs-internal 1306 * functions. Therefore, provide stubs to be inlined at the callsites. 1307 */ 1308 extern int do_fchownat(int dfd, const char __user *filename, uid_t user, 1309 gid_t group, int flag); 1310 1311 static inline long ksys_chown(const char __user *filename, uid_t user, 1312 gid_t group) 1313 { 1314 return do_fchownat(AT_FDCWD, filename, user, group, 0); 1315 } 1316 1317 static inline long ksys_lchown(const char __user *filename, uid_t user, 1318 gid_t group) 1319 { 1320 return do_fchownat(AT_FDCWD, filename, user, group, 1321 AT_SYMLINK_NOFOLLOW); 1322 } 1323 1324 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); 1325 1326 static inline long ksys_ftruncate(unsigned int fd, loff_t length) 1327 { 1328 return do_sys_ftruncate(fd, length, 1); 1329 } 1330 1331 extern long do_sys_truncate(const char __user *pathname, loff_t length); 1332 1333 static inline long ksys_truncate(const char __user *pathname, loff_t length) 1334 { 1335 return do_sys_truncate(pathname, length); 1336 } 1337 1338 static inline unsigned int ksys_personality(unsigned int personality) 1339 { 1340 unsigned int old = current->personality; 1341 1342 if (personality != 0xffffffff) 1343 set_personality(personality); 1344 1345 return old; 1346 } 1347 1348 /* for __ARCH_WANT_SYS_IPC */ 1349 long ksys_semtimedop(int semid, struct sembuf __user *tsops, 1350 unsigned int nsops, 1351 const struct __kernel_timespec __user *timeout); 1352 long ksys_semget(key_t key, int nsems, int semflg); 1353 long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); 1354 long ksys_msgget(key_t key, int msgflg); 1355 long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); 1356 long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1357 long msgtyp, int msgflg); 1358 long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, 1359 int msgflg); 1360 long ksys_shmget(key_t key, size_t size, int shmflg); 1361 long ksys_shmdt(char __user *shmaddr); 1362 long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); 1363 long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, 1364 unsigned int nsops, 1365 const struct old_timespec32 __user *timeout); 1366 1367 int __sys_getsockopt(int fd, int level, int optname, char __user *optval, 1368 int __user *optlen); 1369 int __sys_setsockopt(int fd, int level, int optname, char __user *optval, 1370 int optlen); 1371 #endif 1372