2 * syscalls.h - Linux syscall interfaces (non-arch-specific)
4 * Copyright (c) 2004 Randy Dunlap
5 * Copyright (c) 2004 Open Source Development Labs
7 * This file is released under the GPLv2.
8 * See the file COPYING for more details.
11 #ifndef _LINUX_SYSCALLS_H
12 #define _LINUX_SYSCALLS_H
25 struct linux_dirent64;
27 struct mmap_arg_struct;
34 struct __old_kernel_stat;
35 struct oldold_utsname;
43 struct sel_arg_struct;
63 struct compat_timeval;
64 struct robust_list_head;
66 struct old_linux_dirent;
67 struct perf_event_attr;
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 <trace/syscall.h>
86 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
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.
94 #include <asm/syscall_wrapper.h>
95 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
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>
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__)
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))
125 #ifdef CONFIG_FTRACE_SYSCALLS
126 #define __SC_STR_ADECL(t, a) #a
127 #define __SC_STR_TDECL(t, a) #t
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;
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, \
140 .name = "sys_enter"#sname, \
142 .event.funcs = &enter_syscall_print_funcs, \
143 .data = (void *)&__syscall_meta_##sname,\
144 .flags = TRACE_EVENT_FL_CAP_ANY, \
146 static struct trace_event_call __used \
147 __attribute__((section("_ftrace_events"))) \
148 *__event_enter_##sname = &event_enter_##sname;
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, \
156 .name = "sys_exit"#sname, \
158 .event.funcs = &exit_syscall_print_funcs, \
159 .data = (void *)&__syscall_meta_##sname,\
160 .flags = TRACE_EVENT_FL_CAP_ANY, \
162 static struct trace_event_call __used \
163 __attribute__((section("_ftrace_events"))) \
164 *__event_exit_##sname = &event_exit_##sname;
166 #define SYSCALL_METADATA(sname, nb, ...) \
167 static const char *types_##sname[] = { \
168 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \
170 static const char *args_##sname[] = { \
171 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \
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 */ \
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), \
186 static struct syscall_metadata __used \
187 __attribute__((section("__syscalls_metadata"))) \
188 *__p_syscall_meta_##sname = &__syscall_meta_##sname;
190 static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
192 return tp_event->class == &event_class_syscall_enter ||
193 tp_event->class == &event_class_syscall_exit;
197 #define SYSCALL_METADATA(sname, nb, ...)
199 static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
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 */
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__)
220 #define SYSCALL_DEFINE_MAXARGS 6
222 #define SYSCALL_DEFINEx(x, sname, ...) \
223 SYSCALL_METADATA(sname, x, __VA_ARGS__) \
224 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
226 #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
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_*().
233 #ifndef __SYSCALL_DEFINEx
234 #define __SYSCALL_DEFINEx(x, name, ...) \
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__)) \
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__)); \
251 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
252 #endif /* __SYSCALL_DEFINEx */
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.
258 static inline void addr_limit_user_check(void)
261 if (!test_thread_flag(TIF_FSCHECK))
265 if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
266 "Invalid address limit on user-mode return"))
267 force_sig(SIGKILL, current);
270 clear_thread_flag(TIF_FSCHECK);
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.
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.
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.
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,
297 struct io_event __user *events,
298 struct timespec __user *timeout);
299 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
302 struct io_event __user *events,
303 struct timespec __user *timeout,
304 const struct __aio_sigset *sig);
307 asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
308 const void __user *value, size_t size, int flags);
309 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
310 const void __user *value, size_t size, int flags);
311 asmlinkage long sys_fsetxattr(int fd, const char __user *name,
312 const void __user *value, size_t size, int flags);
313 asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
314 void __user *value, size_t size);
315 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
316 void __user *value, size_t size);
317 asmlinkage long sys_fgetxattr(int fd, const char __user *name,
318 void __user *value, size_t size);
319 asmlinkage long sys_listxattr(const char __user *path, char __user *list,
321 asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
323 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
324 asmlinkage long sys_removexattr(const char __user *path,
325 const char __user *name);
326 asmlinkage long sys_lremovexattr(const char __user *path,
327 const char __user *name);
328 asmlinkage long sys_fremovexattr(int fd, const char __user *name);
331 asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
334 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
337 asmlinkage long sys_eventfd2(unsigned int count, int flags);
340 asmlinkage long sys_epoll_create1(int flags);
341 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
342 struct epoll_event __user *event);
343 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
344 int maxevents, int timeout,
345 const sigset_t __user *sigmask,
349 asmlinkage long sys_dup(unsigned int fildes);
350 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
351 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
352 #if BITS_PER_LONG == 32
353 asmlinkage long sys_fcntl64(unsigned int fd,
354 unsigned int cmd, unsigned long arg);
357 /* fs/inotify_user.c */
358 asmlinkage long sys_inotify_init1(int flags);
359 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
361 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
364 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
368 asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
369 asmlinkage long sys_ioprio_get(int which, int who);
372 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
375 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
377 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
378 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
379 asmlinkage long sys_symlinkat(const char __user * oldname,
380 int newdfd, const char __user * newname);
381 asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
382 int newdfd, const char __user *newname, int flags);
383 asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
384 int newdfd, const char __user * newname);
387 asmlinkage long sys_umount(char __user *name, int flags);
388 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
389 char __user *type, unsigned long flags,
391 asmlinkage long sys_pivot_root(const char __user *new_root,
392 const char __user *put_old);
397 asmlinkage long sys_statfs(const char __user * path,
398 struct statfs __user *buf);
399 asmlinkage long sys_statfs64(const char __user *path, size_t sz,
400 struct statfs64 __user *buf);
401 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
402 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
403 struct statfs64 __user *buf);
404 asmlinkage long sys_truncate(const char __user *path, long length);
405 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
406 #if BITS_PER_LONG == 32
407 asmlinkage long sys_truncate64(const char __user *path, loff_t length);
408 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
410 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
411 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
412 asmlinkage long sys_chdir(const char __user *filename);
413 asmlinkage long sys_fchdir(unsigned int fd);
414 asmlinkage long sys_chroot(const char __user *filename);
415 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
416 asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
418 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
419 gid_t group, int flag);
420 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
421 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
423 asmlinkage long sys_close(unsigned int fd);
424 asmlinkage long sys_vhangup(void);
427 asmlinkage long sys_pipe2(int __user *fildes, int flags);
430 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
431 qid_t id, void __user *addr);
434 asmlinkage long sys_getdents64(unsigned int fd,
435 struct linux_dirent64 __user *dirent,
438 /* fs/read_write.c */
439 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
440 unsigned long offset_low, loff_t __user *result,
441 unsigned int whence);
442 asmlinkage long sys_lseek(unsigned int fd, off_t offset,
443 unsigned int whence);
444 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
445 asmlinkage long sys_write(unsigned int fd, const char __user *buf,
447 asmlinkage long sys_readv(unsigned long fd,
448 const struct iovec __user *vec,
450 asmlinkage long sys_writev(unsigned long fd,
451 const struct iovec __user *vec,
453 asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
454 size_t count, loff_t pos);
455 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
456 size_t count, loff_t pos);
457 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
458 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
459 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
460 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
463 asmlinkage long sys_sendfile64(int out_fd, int in_fd,
464 loff_t __user *offset, size_t count);
467 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
468 fd_set __user *, struct timespec __user *,
470 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
471 struct timespec __user *, const sigset_t __user *,
475 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
478 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
479 unsigned long nr_segs, unsigned int flags);
480 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
481 int fd_out, loff_t __user *off_out,
482 size_t len, unsigned int flags);
483 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
486 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
488 asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
489 struct stat __user *statbuf, int flag);
490 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
491 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
492 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
493 asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
494 struct stat64 __user *statbuf, int flag);
498 asmlinkage long sys_sync(void);
499 asmlinkage long sys_fsync(unsigned int fd);
500 asmlinkage long sys_fdatasync(unsigned int fd);
501 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
502 loff_t offset, loff_t nbytes);
503 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
507 asmlinkage long sys_timerfd_create(int clockid, int flags);
508 asmlinkage long sys_timerfd_settime(int ufd, int flags,
509 const struct itimerspec __user *utmr,
510 struct itimerspec __user *otmr);
511 asmlinkage long sys_timerfd_gettime(int ufd, struct itimerspec __user *otmr);
514 asmlinkage long sys_utimensat(int dfd, const char __user *filename,
515 struct timespec __user *utimes, int flags);
518 asmlinkage long sys_acct(const char __user *name);
520 /* kernel/capability.c */
521 asmlinkage long sys_capget(cap_user_header_t header,
522 cap_user_data_t dataptr);
523 asmlinkage long sys_capset(cap_user_header_t header,
524 const cap_user_data_t data);
526 /* kernel/exec_domain.c */
527 asmlinkage long sys_personality(unsigned int personality);
530 asmlinkage long sys_exit(int error_code);
531 asmlinkage long sys_exit_group(int error_code);
532 asmlinkage long sys_waitid(int which, pid_t pid,
533 struct siginfo __user *infop,
534 int options, struct rusage __user *ru);
537 asmlinkage long sys_set_tid_address(int __user *tidptr);
538 asmlinkage long sys_unshare(unsigned long unshare_flags);
541 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
542 struct timespec __user *utime, u32 __user *uaddr2,
544 asmlinkage long sys_get_robust_list(int pid,
545 struct robust_list_head __user * __user *head_ptr,
546 size_t __user *len_ptr);
547 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
550 /* kernel/hrtimer.c */
551 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
552 struct __kernel_timespec __user *rmtp);
554 /* kernel/itimer.c */
555 asmlinkage long sys_getitimer(int which, struct itimerval __user *value);
556 asmlinkage long sys_setitimer(int which,
557 struct itimerval __user *value,
558 struct itimerval __user *ovalue);
561 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
562 struct kexec_segment __user *segments,
563 unsigned long flags);
565 /* kernel/module.c */
566 asmlinkage long sys_init_module(void __user *umod, unsigned long len,
567 const char __user *uargs);
568 asmlinkage long sys_delete_module(const char __user *name_user,
571 /* kernel/posix-timers.c */
572 asmlinkage long sys_timer_create(clockid_t which_clock,
573 struct sigevent __user *timer_event_spec,
574 timer_t __user * created_timer_id);
575 asmlinkage long sys_timer_gettime(timer_t timer_id,
576 struct itimerspec __user *setting);
577 asmlinkage long sys_timer_getoverrun(timer_t timer_id);
578 asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
579 const struct itimerspec __user *new_setting,
580 struct itimerspec __user *old_setting);
581 asmlinkage long sys_timer_delete(timer_t timer_id);
582 asmlinkage long sys_clock_settime(clockid_t which_clock,
583 const struct __kernel_timespec __user *tp);
584 asmlinkage long sys_clock_gettime(clockid_t which_clock,
585 struct __kernel_timespec __user *tp);
586 asmlinkage long sys_clock_getres(clockid_t which_clock,
587 struct __kernel_timespec __user *tp);
588 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
589 const struct __kernel_timespec __user *rqtp,
590 struct __kernel_timespec __user *rmtp);
592 /* kernel/printk.c */
593 asmlinkage long sys_syslog(int type, char __user *buf, int len);
595 /* kernel/ptrace.c */
596 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
598 /* kernel/sched/core.c */
600 asmlinkage long sys_sched_setparam(pid_t pid,
601 struct sched_param __user *param);
602 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
603 struct sched_param __user *param);
604 asmlinkage long sys_sched_getscheduler(pid_t pid);
605 asmlinkage long sys_sched_getparam(pid_t pid,
606 struct sched_param __user *param);
607 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
608 unsigned long __user *user_mask_ptr);
609 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
610 unsigned long __user *user_mask_ptr);
611 asmlinkage long sys_sched_yield(void);
612 asmlinkage long sys_sched_get_priority_max(int policy);
613 asmlinkage long sys_sched_get_priority_min(int policy);
614 asmlinkage long sys_sched_rr_get_interval(pid_t pid,
615 struct timespec __user *interval);
617 /* kernel/signal.c */
618 asmlinkage long sys_restart_syscall(void);
619 asmlinkage long sys_kill(pid_t pid, int sig);
620 asmlinkage long sys_tkill(pid_t pid, int sig);
621 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
622 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
623 struct sigaltstack __user *uoss);
624 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
625 #ifndef CONFIG_ODD_RT_SIGACTION
626 asmlinkage long sys_rt_sigaction(int,
627 const struct sigaction __user *,
628 struct sigaction __user *,
631 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
632 sigset_t __user *oset, size_t sigsetsize);
633 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
634 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
635 siginfo_t __user *uinfo,
636 const struct timespec __user *uts,
638 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
641 asmlinkage long sys_setpriority(int which, int who, int niceval);
642 asmlinkage long sys_getpriority(int which, int who);
643 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
645 asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
646 asmlinkage long sys_setgid(gid_t gid);
647 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
648 asmlinkage long sys_setuid(uid_t uid);
649 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
650 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
651 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
652 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
653 asmlinkage long sys_setfsuid(uid_t uid);
654 asmlinkage long sys_setfsgid(gid_t gid);
655 asmlinkage long sys_times(struct tms __user *tbuf);
656 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
657 asmlinkage long sys_getpgid(pid_t pid);
658 asmlinkage long sys_getsid(pid_t pid);
659 asmlinkage long sys_setsid(void);
660 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
661 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
662 asmlinkage long sys_newuname(struct new_utsname __user *name);
663 asmlinkage long sys_sethostname(char __user *name, int len);
664 asmlinkage long sys_setdomainname(char __user *name, int len);
665 asmlinkage long sys_getrlimit(unsigned int resource,
666 struct rlimit __user *rlim);
667 asmlinkage long sys_setrlimit(unsigned int resource,
668 struct rlimit __user *rlim);
669 asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
670 asmlinkage long sys_umask(int mask);
671 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
672 unsigned long arg4, unsigned long arg5);
673 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
676 asmlinkage long sys_gettimeofday(struct timeval __user *tv,
677 struct timezone __user *tz);
678 asmlinkage long sys_settimeofday(struct timeval __user *tv,
679 struct timezone __user *tz);
680 asmlinkage long sys_adjtimex(struct timex __user *txc_p);
683 asmlinkage long sys_getpid(void);
684 asmlinkage long sys_getppid(void);
685 asmlinkage long sys_getuid(void);
686 asmlinkage long sys_geteuid(void);
687 asmlinkage long sys_getgid(void);
688 asmlinkage long sys_getegid(void);
689 asmlinkage long sys_gettid(void);
690 asmlinkage long sys_sysinfo(struct sysinfo __user *info);
693 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
694 asmlinkage long sys_mq_unlink(const char __user *name);
695 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);
696 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);
697 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
698 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
701 asmlinkage long sys_msgget(key_t key, int msgflg);
702 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
703 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
704 size_t msgsz, long msgtyp, int msgflg);
705 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
706 size_t msgsz, int msgflg);
709 asmlinkage long sys_semget(key_t key, int nsems, int semflg);
710 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
711 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
713 const struct __kernel_timespec __user *timeout);
714 asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
718 asmlinkage long sys_shmget(key_t key, size_t size, int flag);
719 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
720 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
721 asmlinkage long sys_shmdt(char __user *shmaddr);
724 asmlinkage long sys_socket(int, int, int);
725 asmlinkage long sys_socketpair(int, int, int, int __user *);
726 asmlinkage long sys_bind(int, struct sockaddr __user *, int);
727 asmlinkage long sys_listen(int, int);
728 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
729 asmlinkage long sys_connect(int, struct sockaddr __user *, int);
730 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
731 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
732 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
733 struct sockaddr __user *, int);
734 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
735 struct sockaddr __user *, int __user *);
736 asmlinkage long sys_setsockopt(int fd, int level, int optname,
737 char __user *optval, int optlen);
738 asmlinkage long sys_getsockopt(int fd, int level, int optname,
739 char __user *optval, int __user *optlen);
740 asmlinkage long sys_shutdown(int, int);
741 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
742 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
745 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
747 /* mm/nommu.c, also with MMU */
748 asmlinkage long sys_brk(unsigned long brk);
749 asmlinkage long sys_munmap(unsigned long addr, size_t len);
750 asmlinkage long sys_mremap(unsigned long addr,
751 unsigned long old_len, unsigned long new_len,
752 unsigned long flags, unsigned long new_addr);
754 /* security/keys/keyctl.c */
755 asmlinkage long sys_add_key(const char __user *_type,
756 const char __user *_description,
757 const void __user *_payload,
759 key_serial_t destringid);
760 asmlinkage long sys_request_key(const char __user *_type,
761 const char __user *_description,
762 const char __user *_callout_info,
763 key_serial_t destringid);
764 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
765 unsigned long arg4, unsigned long arg5);
767 /* arch/example/kernel/sys_example.c */
768 #ifdef CONFIG_CLONE_BACKWARDS
769 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
772 #ifdef CONFIG_CLONE_BACKWARDS3
773 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
774 int __user *, unsigned long);
776 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
777 int __user *, unsigned long);
780 asmlinkage long sys_execve(const char __user *filename,
781 const char __user *const __user *argv,
782 const char __user *const __user *envp);
785 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
787 /* mm/, CONFIG_MMU only */
788 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
789 asmlinkage long sys_swapoff(const char __user *specialfile);
790 asmlinkage long sys_mprotect(unsigned long start, size_t len,
792 asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
793 asmlinkage long sys_mlock(unsigned long start, size_t len);
794 asmlinkage long sys_munlock(unsigned long start, size_t len);
795 asmlinkage long sys_mlockall(int flags);
796 asmlinkage long sys_munlockall(void);
797 asmlinkage long sys_mincore(unsigned long start, size_t len,
798 unsigned char __user * vec);
799 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
800 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
801 unsigned long prot, unsigned long pgoff,
802 unsigned long flags);
803 asmlinkage long sys_mbind(unsigned long start, unsigned long len,
805 const unsigned long __user *nmask,
806 unsigned long maxnode,
808 asmlinkage long sys_get_mempolicy(int __user *policy,
809 unsigned long __user *nmask,
810 unsigned long maxnode,
811 unsigned long addr, unsigned long flags);
812 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
813 unsigned long maxnode);
814 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
815 const unsigned long __user *from,
816 const unsigned long __user *to);
817 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
818 const void __user * __user *pages,
819 const int __user *nodes,
823 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
824 siginfo_t __user *uinfo);
825 asmlinkage long sys_perf_event_open(
826 struct perf_event_attr __user *attr_uptr,
827 pid_t pid, int cpu, int group_fd, unsigned long flags);
828 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
829 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
830 unsigned int vlen, unsigned flags,
831 struct timespec __user *timeout);
833 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
834 int options, struct rusage __user *ru);
835 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
836 const struct rlimit64 __user *new_rlim,
837 struct rlimit64 __user *old_rlim);
838 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
839 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
841 const char __user *pathname);
842 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
843 struct file_handle __user *handle,
844 int __user *mnt_id, int flag);
845 asmlinkage long sys_open_by_handle_at(int mountdirfd,
846 struct file_handle __user *handle,
848 asmlinkage long sys_clock_adjtime(clockid_t which_clock,
849 struct timex __user *tx);
850 asmlinkage long sys_syncfs(int fd);
851 asmlinkage long sys_setns(int fd, int nstype);
852 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
853 unsigned int vlen, unsigned flags);
854 asmlinkage long sys_process_vm_readv(pid_t pid,
855 const struct iovec __user *lvec,
856 unsigned long liovcnt,
857 const struct iovec __user *rvec,
858 unsigned long riovcnt,
859 unsigned long flags);
860 asmlinkage long sys_process_vm_writev(pid_t pid,
861 const struct iovec __user *lvec,
862 unsigned long liovcnt,
863 const struct iovec __user *rvec,
864 unsigned long riovcnt,
865 unsigned long flags);
866 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
867 unsigned long idx1, unsigned long idx2);
868 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
869 asmlinkage long sys_sched_setattr(pid_t pid,
870 struct sched_attr __user *attr,
872 asmlinkage long sys_sched_getattr(pid_t pid,
873 struct sched_attr __user *attr,
876 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
877 int newdfd, const char __user *newname,
879 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
880 const char __user *uargs);
881 asmlinkage long sys_getrandom(char __user *buf, size_t count,
883 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
884 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
885 asmlinkage long sys_execveat(int dfd, const char __user *filename,
886 const char __user *const __user *argv,
887 const char __user *const __user *envp, int flags);
888 asmlinkage long sys_userfaultfd(int flags);
889 asmlinkage long sys_membarrier(int cmd, int flags);
890 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
891 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
892 int fd_out, loff_t __user *off_out,
893 size_t len, unsigned int flags);
894 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
895 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
897 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
898 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
900 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
901 unsigned long prot, int pkey);
902 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
903 asmlinkage long sys_pkey_free(int pkey);
904 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
905 unsigned mask, struct statx __user *buffer);
906 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
907 int flags, uint32_t sig);
910 * Architecture-specific system calls
913 /* arch/x86/kernel/ioport.c */
914 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
916 /* pciconfig: alpha, arm, arm64, ia64, sparc */
917 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
918 unsigned long off, unsigned long len,
920 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
921 unsigned long off, unsigned long len,
923 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
926 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
927 __u32 __user *ustatus);
928 asmlinkage long sys_spu_create(const char __user *name,
929 unsigned int flags, umode_t mode, int fd);
933 * Deprecated system calls which are still defined in
934 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
937 /* __ARCH_WANT_SYSCALL_NO_AT */
938 asmlinkage long sys_open(const char __user *filename,
939 int flags, umode_t mode);
940 asmlinkage long sys_link(const char __user *oldname,
941 const char __user *newname);
942 asmlinkage long sys_unlink(const char __user *pathname);
943 asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
945 asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
946 asmlinkage long sys_chown(const char __user *filename,
947 uid_t user, gid_t group);
948 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
949 asmlinkage long sys_rmdir(const char __user *pathname);
950 asmlinkage long sys_lchown(const char __user *filename,
951 uid_t user, gid_t group);
952 asmlinkage long sys_access(const char __user *filename, int mode);
953 asmlinkage long sys_rename(const char __user *oldname,
954 const char __user *newname);
955 asmlinkage long sys_symlink(const char __user *old, const char __user *new);
956 asmlinkage long sys_utimes(char __user *filename,
957 struct timeval __user *utimes);
958 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
959 asmlinkage long sys_stat64(const char __user *filename,
960 struct stat64 __user *statbuf);
961 asmlinkage long sys_lstat64(const char __user *filename,
962 struct stat64 __user *statbuf);
965 /* __ARCH_WANT_SYSCALL_NO_FLAGS */
966 asmlinkage long sys_pipe(int __user *fildes);
967 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
968 asmlinkage long sys_epoll_create(int size);
969 asmlinkage long sys_inotify_init(void);
970 asmlinkage long sys_eventfd(unsigned int count);
971 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
973 /* __ARCH_WANT_SYSCALL_OFF_T */
974 asmlinkage long sys_sendfile(int out_fd, int in_fd,
975 off_t __user *offset, size_t count);
976 asmlinkage long sys_newstat(const char __user *filename,
977 struct stat __user *statbuf);
978 asmlinkage long sys_newlstat(const char __user *filename,
979 struct stat __user *statbuf);
980 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
982 /* __ARCH_WANT_SYSCALL_DEPRECATED */
983 asmlinkage long sys_alarm(unsigned int seconds);
984 asmlinkage long sys_getpgrp(void);
985 asmlinkage long sys_pause(void);
986 asmlinkage long sys_time(time_t __user *tloc);
987 asmlinkage long sys_utime(char __user *filename,
988 struct utimbuf __user *times);
989 asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
990 asmlinkage long sys_getdents(unsigned int fd,
991 struct linux_dirent __user *dirent,
993 asmlinkage long sys_futimesat(int dfd, const char __user *filename,
994 struct timeval __user *utimes);
995 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
996 fd_set __user *exp, struct timeval __user *tvp);
997 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
999 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1000 int maxevents, int timeout);
1001 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1002 asmlinkage long sys_vfork(void);
1003 asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1004 asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1005 asmlinkage long sys_bdflush(int func, long data);
1006 asmlinkage long sys_oldumount(char __user *name);
1007 asmlinkage long sys_uselib(const char __user *library);
1008 asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
1009 asmlinkage long sys_sysfs(int option,
1010 unsigned long arg1, unsigned long arg2);
1011 asmlinkage long sys_fork(void);
1013 /* obsolete: kernel/time/time.c */
1014 asmlinkage long sys_stime(time_t __user *tptr);
1016 /* obsolete: kernel/signal.c */
1017 asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1018 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1019 old_sigset_t __user *oset);
1020 #ifdef CONFIG_OLD_SIGSUSPEND
1021 asmlinkage long sys_sigsuspend(old_sigset_t mask);
1024 #ifdef CONFIG_OLD_SIGSUSPEND3
1025 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1028 #ifdef CONFIG_OLD_SIGACTION
1029 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1030 struct old_sigaction __user *);
1032 asmlinkage long sys_sgetmask(void);
1033 asmlinkage long sys_ssetmask(int newmask);
1034 asmlinkage long sys_signal(int sig, __sighandler_t handler);
1036 /* obsolete: kernel/sched/core.c */
1037 asmlinkage long sys_nice(int increment);
1039 /* obsolete: kernel/kexec_file.c */
1040 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1041 unsigned long cmdline_len,
1042 const char __user *cmdline_ptr,
1043 unsigned long flags);
1045 /* obsolete: kernel/exit.c */
1046 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1048 /* obsolete: kernel/uid16.c */
1049 #ifdef CONFIG_HAVE_UID16
1050 asmlinkage long sys_chown16(const char __user *filename,
1051 old_uid_t user, old_gid_t group);
1052 asmlinkage long sys_lchown16(const char __user *filename,
1053 old_uid_t user, old_gid_t group);
1054 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1055 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1056 asmlinkage long sys_setgid16(old_gid_t gid);
1057 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1058 asmlinkage long sys_setuid16(old_uid_t uid);
1059 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1060 asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1061 old_uid_t __user *euid, old_uid_t __user *suid);
1062 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1063 asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1064 old_gid_t __user *egid, old_gid_t __user *sgid);
1065 asmlinkage long sys_setfsuid16(old_uid_t uid);
1066 asmlinkage long sys_setfsgid16(old_gid_t gid);
1067 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1068 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1069 asmlinkage long sys_getuid16(void);
1070 asmlinkage long sys_geteuid16(void);
1071 asmlinkage long sys_getgid16(void);
1072 asmlinkage long sys_getegid16(void);
1075 /* obsolete: net/socket.c */
1076 asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1078 /* obsolete: fs/stat.c */
1079 asmlinkage long sys_stat(const char __user *filename,
1080 struct __old_kernel_stat __user *statbuf);
1081 asmlinkage long sys_lstat(const char __user *filename,
1082 struct __old_kernel_stat __user *statbuf);
1083 asmlinkage long sys_fstat(unsigned int fd,
1084 struct __old_kernel_stat __user *statbuf);
1085 asmlinkage long sys_readlink(const char __user *path,
1086 char __user *buf, int bufsiz);
1088 /* obsolete: fs/select.c */
1089 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1091 /* obsolete: fs/readdir.c */
1092 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1094 /* obsolete: kernel/sys.c */
1095 asmlinkage long sys_gethostname(char __user *name, int len);
1096 asmlinkage long sys_uname(struct old_utsname __user *);
1097 asmlinkage long sys_olduname(struct oldold_utsname __user *);
1098 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1099 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1103 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1104 unsigned long third, void __user *ptr, long fifth);
1107 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1108 unsigned long prot, unsigned long flags,
1109 unsigned long fd, unsigned long pgoff);
1110 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1114 * Not a real system call, but a placeholder for syscalls which are
1115 * not implemented -- see kernel/sys_ni.c
1117 asmlinkage long sys_ni_syscall(void);
1119 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1123 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1124 * Instead, use one of the functions which work equivalently, such as
1125 * the ksys_xyzyyz() functions prototyped below.
1128 int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type,
1129 unsigned long flags, void __user *data);
1130 int ksys_umount(char __user *name, int flags);
1131 int ksys_dup(unsigned int fildes);
1132 int ksys_chroot(const char __user *filename);
1133 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1134 int ksys_chdir(const char __user *filename);
1135 int ksys_fchmod(unsigned int fd, umode_t mode);
1136 int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1137 int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent,
1138 unsigned int count);
1139 int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
1140 off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence);
1141 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1142 void ksys_sync(void);
1143 int ksys_unshare(unsigned long unshare_flags);
1144 int ksys_setsid(void);
1145 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1146 unsigned int flags);
1147 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1149 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1150 size_t count, loff_t pos);
1151 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1152 #ifdef CONFIG_ADVISE_SYSCALLS
1153 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1155 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1161 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1162 unsigned long prot, unsigned long flags,
1163 unsigned long fd, unsigned long pgoff);
1164 ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1167 * The following kernel syscall equivalents are just wrappers to fs-internal
1168 * functions. Therefore, provide stubs to be inlined at the callsites.
1170 extern long do_unlinkat(int dfd, struct filename *name);
1172 static inline long ksys_unlink(const char __user *pathname)
1174 return do_unlinkat(AT_FDCWD, getname(pathname));
1177 extern long do_rmdir(int dfd, const char __user *pathname);
1179 static inline long ksys_rmdir(const char __user *pathname)
1181 return do_rmdir(AT_FDCWD, pathname);
1184 extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
1186 static inline long ksys_mkdir(const char __user *pathname, umode_t mode)
1188 return do_mkdirat(AT_FDCWD, pathname, mode);
1191 extern long do_symlinkat(const char __user *oldname, int newdfd,
1192 const char __user *newname);
1194 static inline long ksys_symlink(const char __user *oldname,
1195 const char __user *newname)
1197 return do_symlinkat(oldname, AT_FDCWD, newname);
1200 extern long do_mknodat(int dfd, const char __user *filename, umode_t mode,
1203 static inline long ksys_mknod(const char __user *filename, umode_t mode,
1206 return do_mknodat(AT_FDCWD, filename, mode, dev);
1209 extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
1210 const char __user *newname, int flags);
1212 static inline long ksys_link(const char __user *oldname,
1213 const char __user *newname)
1215 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
1218 extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
1220 static inline int ksys_chmod(const char __user *filename, umode_t mode)
1222 return do_fchmodat(AT_FDCWD, filename, mode);
1225 extern long do_faccessat(int dfd, const char __user *filename, int mode);
1227 static inline long ksys_access(const char __user *filename, int mode)
1229 return do_faccessat(AT_FDCWD, filename, mode);
1232 extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1233 gid_t group, int flag);
1235 static inline long ksys_chown(const char __user *filename, uid_t user,
1238 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1241 static inline long ksys_lchown(const char __user *filename, uid_t user,
1244 return do_fchownat(AT_FDCWD, filename, user, group,
1245 AT_SYMLINK_NOFOLLOW);
1248 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1250 static inline long ksys_ftruncate(unsigned int fd, unsigned long length)
1252 return do_sys_ftruncate(fd, length, 1);
1255 extern int __close_fd(struct files_struct *files, unsigned int fd);
1258 * In contrast to sys_close(), this stub does not check whether the syscall
1259 * should or should not be restarted, but returns the raw error codes from
1262 static inline int ksys_close(unsigned int fd)
1264 return __close_fd(current->files, fd);
1267 extern long do_sys_open(int dfd, const char __user *filename, int flags,
1270 static inline long ksys_open(const char __user *filename, int flags,
1273 if (force_o_largefile())
1274 flags |= O_LARGEFILE;
1275 return do_sys_open(AT_FDCWD, filename, flags, mode);
1278 extern long do_sys_truncate(const char __user *pathname, loff_t length);
1280 static inline long ksys_truncate(const char __user *pathname, loff_t length)
1282 return do_sys_truncate(pathname, length);