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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
12struct __aio_sigset;
13struct epoll_event;
14struct iattr;
15struct inode;
16struct iocb;
17struct io_event;
18struct iovec;
19struct __kernel_old_itimerval;
20struct kexec_segment;
21struct linux_dirent;
22struct linux_dirent64;
23struct list_head;
24struct mmap_arg_struct;
25struct msgbuf;
26struct user_msghdr;
27struct mmsghdr;
28struct msqid_ds;
29struct new_utsname;
30struct nfsctl_arg;
31struct __old_kernel_stat;
32struct oldold_utsname;
33struct old_utsname;
34struct pollfd;
35struct rlimit;
36struct rlimit64;
37struct rusage;
38struct sched_param;
39struct sched_attr;
40struct sel_arg_struct;
41struct semaphore;
42struct sembuf;
43struct shmid_ds;
44struct sockaddr;
45struct stat;
46struct stat64;
47struct statfs;
48struct statfs64;
49struct statx;
50struct __sysctl_args;
51struct sysinfo;
52struct timespec;
53struct __kernel_old_timeval;
54struct __kernel_timex;
55struct timezone;
56struct tms;
57struct utimbuf;
58struct mq_attr;
59struct compat_stat;
60struct old_timeval32;
61struct robust_list_head;
62struct getcpu_cache;
63struct old_linux_dirent;
64struct perf_event_attr;
65struct file_handle;
66struct sigaltstack;
67struct rseq;
68union bpf_attr;
69struct io_uring_params;
70struct clone_args;
71struct open_how;
72
73#include <linux/types.h>
74#include <linux/aio_abi.h>
75#include <linux/capability.h>
76#include <linux/signal.h>
77#include <linux/list.h>
78#include <linux/bug.h>
79#include <linux/sem.h>
80#include <asm/siginfo.h>
81#include <linux/unistd.h>
82#include <linux/quota.h>
83#include <linux/key.h>
84#include <linux/personality.h>
85#include <trace/syscall.h>
86
87#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
88/*
89 * It may be useful for an architecture to override the definitions of the
90 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a
91 * different calling convention for syscalls. To allow for that, the prototypes
92 * for the sys_*() functions below will *not* be included if
93 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
94 */
95#include <asm/syscall_wrapper.h>
96#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
97
98/*
99 * __MAP - apply a macro to syscall arguments
100 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
101 * m(t1, a1), m(t2, a2), ..., m(tn, an)
102 * The first argument must be equal to the amount of type/name
103 * pairs given. Note that this list of pairs (i.e. the arguments
104 * of __MAP starting at the third one) is in the same format as
105 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
106 */
107#define __MAP0(m,...)
108#define __MAP1(m,t,a,...) m(t,a)
109#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
110#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
111#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
112#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
113#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
114#define __MAP(n,...) __MAP##n(__VA_ARGS__)
115
116#define __SC_DECL(t, a) t a
117#define __TYPE_AS(t, v) __same_type((__force t)0, v)
118#define __TYPE_IS_L(t) (__TYPE_AS(t, 0L))
119#define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL))
120#define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL))
121#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
122#define __SC_CAST(t, a) (__force t) a
123#define __SC_ARGS(t, a) a
124#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
125
126#ifdef CONFIG_FTRACE_SYSCALLS
127#define __SC_STR_ADECL(t, a) #a
128#define __SC_STR_TDECL(t, a) #t
129
130extern struct trace_event_class event_class_syscall_enter;
131extern struct trace_event_class event_class_syscall_exit;
132extern struct trace_event_functions enter_syscall_print_funcs;
133extern struct trace_event_functions exit_syscall_print_funcs;
134
135#define SYSCALL_TRACE_ENTER_EVENT(sname) \
136 static struct syscall_metadata __syscall_meta_##sname; \
137 static struct trace_event_call __used \
138 event_enter_##sname = { \
139 .class = &event_class_syscall_enter, \
140 { \
141 .name = "sys_enter"#sname, \
142 }, \
143 .event.funcs = &enter_syscall_print_funcs, \
144 .data = (void *)&__syscall_meta_##sname,\
145 .flags = TRACE_EVENT_FL_CAP_ANY, \
146 }; \
147 static struct trace_event_call __used \
148 __attribute__((section("_ftrace_events"))) \
149 *__event_enter_##sname = &event_enter_##sname;
150
151#define SYSCALL_TRACE_EXIT_EVENT(sname) \
152 static struct syscall_metadata __syscall_meta_##sname; \
153 static struct trace_event_call __used \
154 event_exit_##sname = { \
155 .class = &event_class_syscall_exit, \
156 { \
157 .name = "sys_exit"#sname, \
158 }, \
159 .event.funcs = &exit_syscall_print_funcs, \
160 .data = (void *)&__syscall_meta_##sname,\
161 .flags = TRACE_EVENT_FL_CAP_ANY, \
162 }; \
163 static struct trace_event_call __used \
164 __attribute__((section("_ftrace_events"))) \
165 *__event_exit_##sname = &event_exit_##sname;
166
167#define SYSCALL_METADATA(sname, nb, ...) \
168 static const char *types_##sname[] = { \
169 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \
170 }; \
171 static const char *args_##sname[] = { \
172 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \
173 }; \
174 SYSCALL_TRACE_ENTER_EVENT(sname); \
175 SYSCALL_TRACE_EXIT_EVENT(sname); \
176 static struct syscall_metadata __used \
177 __syscall_meta_##sname = { \
178 .name = "sys"#sname, \
179 .syscall_nr = -1, /* Filled in at boot */ \
180 .nb_args = nb, \
181 .types = nb ? types_##sname : NULL, \
182 .args = nb ? args_##sname : NULL, \
183 .enter_event = &event_enter_##sname, \
184 .exit_event = &event_exit_##sname, \
185 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
186 }; \
187 static struct syscall_metadata __used \
188 __attribute__((section("__syscalls_metadata"))) \
189 *__p_syscall_meta_##sname = &__syscall_meta_##sname;
190
191static 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
200static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
201{
202 return 0;
203}
204#endif
205
206#ifndef SYSCALL_DEFINE0
207#define SYSCALL_DEFINE0(sname) \
208 SYSCALL_METADATA(_##sname, 0); \
209 asmlinkage long sys_##sname(void); \
210 ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \
211 asmlinkage long sys_##sname(void)
212#endif /* SYSCALL_DEFINE0 */
213
214#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
215#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
216#define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
217#define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
218#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
219#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
220
221#define SYSCALL_DEFINE_MAXARGS 6
222
223#define SYSCALL_DEFINEx(x, sname, ...) \
224 SYSCALL_METADATA(sname, x, __VA_ARGS__) \
225 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
226
227#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
228
229/*
230 * The asmlinkage stub is aliased to a function named __se_sys_*() which
231 * sign-extends 32-bit ints to longs whenever needed. The actual work is
232 * done within __do_sys_*().
233 */
234#ifndef __SYSCALL_DEFINEx
235#define __SYSCALL_DEFINEx(x, name, ...) \
236 __diag_push(); \
237 __diag_ignore(GCC, 8, "-Wattribute-alias", \
238 "Type aliasing is used to sanitize syscall arguments");\
239 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
240 __attribute__((alias(__stringify(__se_sys##name)))); \
241 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \
242 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
243 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
244 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
245 { \
246 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
247 __MAP(x,__SC_TEST,__VA_ARGS__); \
248 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
249 return ret; \
250 } \
251 __diag_pop(); \
252 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
253#endif /* __SYSCALL_DEFINEx */
254
255/*
256 * Called before coming back to user-mode. Returning to user-mode with an
257 * address limit different than USER_DS can allow to overwrite kernel memory.
258 */
259static inline void addr_limit_user_check(void)
260{
261#ifdef TIF_FSCHECK
262 if (!test_thread_flag(TIF_FSCHECK))
263 return;
264#endif
265
266 if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
267 "Invalid address limit on user-mode return"))
268 force_sig(SIGKILL);
269
270#ifdef TIF_FSCHECK
271 clear_thread_flag(TIF_FSCHECK);
272#endif
273}
274
275/*
276 * These syscall function prototypes are kept in the same order as
277 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below,
278 * followed by deprecated or obsolete system calls.
279 *
280 * Please note that these prototypes here are only provided for information
281 * purposes, for static analysis, and for linking from the syscall table.
282 * These functions should not be called elsewhere from kernel code.
283 *
284 * As the syscall calling convention may be different from the default
285 * for architectures overriding the syscall calling convention, do not
286 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
287 */
288#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
289asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
290asmlinkage long sys_io_destroy(aio_context_t ctx);
291asmlinkage long sys_io_submit(aio_context_t, long,
292 struct iocb __user * __user *);
293asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
294 struct io_event __user *result);
295asmlinkage long sys_io_getevents(aio_context_t ctx_id,
296 long min_nr,
297 long nr,
298 struct io_event __user *events,
299 struct __kernel_timespec __user *timeout);
300asmlinkage long sys_io_getevents_time32(__u32 ctx_id,
301 __s32 min_nr,
302 __s32 nr,
303 struct io_event __user *events,
304 struct old_timespec32 __user *timeout);
305asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
306 long min_nr,
307 long nr,
308 struct io_event __user *events,
309 struct __kernel_timespec __user *timeout,
310 const struct __aio_sigset *sig);
311asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
312 long min_nr,
313 long nr,
314 struct io_event __user *events,
315 struct old_timespec32 __user *timeout,
316 const struct __aio_sigset *sig);
317asmlinkage long sys_io_uring_setup(u32 entries,
318 struct io_uring_params __user *p);
319asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit,
320 u32 min_complete, u32 flags,
321 const sigset_t __user *sig, size_t sigsz);
322asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op,
323 void __user *arg, unsigned int nr_args);
324
325/* fs/xattr.c */
326asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
327 const void __user *value, size_t size, int flags);
328asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
329 const void __user *value, size_t size, int flags);
330asmlinkage long sys_fsetxattr(int fd, const char __user *name,
331 const void __user *value, size_t size, int flags);
332asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
333 void __user *value, size_t size);
334asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
335 void __user *value, size_t size);
336asmlinkage long sys_fgetxattr(int fd, const char __user *name,
337 void __user *value, size_t size);
338asmlinkage long sys_listxattr(const char __user *path, char __user *list,
339 size_t size);
340asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
341 size_t size);
342asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
343asmlinkage long sys_removexattr(const char __user *path,
344 const char __user *name);
345asmlinkage long sys_lremovexattr(const char __user *path,
346 const char __user *name);
347asmlinkage long sys_fremovexattr(int fd, const char __user *name);
348
349/* fs/dcache.c */
350asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
351
352/* fs/cookies.c */
353asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
354
355/* fs/eventfd.c */
356asmlinkage long sys_eventfd2(unsigned int count, int flags);
357
358/* fs/eventpoll.c */
359asmlinkage long sys_epoll_create1(int flags);
360asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
361 struct epoll_event __user *event);
362asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
363 int maxevents, int timeout,
364 const sigset_t __user *sigmask,
365 size_t sigsetsize);
366
367/* fs/fcntl.c */
368asmlinkage long sys_dup(unsigned int fildes);
369asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
370asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
371#if BITS_PER_LONG == 32
372asmlinkage long sys_fcntl64(unsigned int fd,
373 unsigned int cmd, unsigned long arg);
374#endif
375
376/* fs/inotify_user.c */
377asmlinkage long sys_inotify_init1(int flags);
378asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
379 u32 mask);
380asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
381
382/* fs/ioctl.c */
383asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
384 unsigned long arg);
385
386/* fs/ioprio.c */
387asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
388asmlinkage long sys_ioprio_get(int which, int who);
389
390/* fs/locks.c */
391asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
392
393/* fs/namei.c */
394asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
395 unsigned dev);
396asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
397asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
398asmlinkage long sys_symlinkat(const char __user * oldname,
399 int newdfd, const char __user * newname);
400asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
401 int newdfd, const char __user *newname, int flags);
402asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
403 int newdfd, const char __user * newname);
404
405/* fs/namespace.c */
406asmlinkage long sys_umount(char __user *name, int flags);
407asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
408 char __user *type, unsigned long flags,
409 void __user *data);
410asmlinkage long sys_pivot_root(const char __user *new_root,
411 const char __user *put_old);
412
413/* fs/nfsctl.c */
414
415/* fs/open.c */
416asmlinkage long sys_statfs(const char __user * path,
417 struct statfs __user *buf);
418asmlinkage long sys_statfs64(const char __user *path, size_t sz,
419 struct statfs64 __user *buf);
420asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
421asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
422 struct statfs64 __user *buf);
423asmlinkage long sys_truncate(const char __user *path, long length);
424asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
425#if BITS_PER_LONG == 32
426asmlinkage long sys_truncate64(const char __user *path, loff_t length);
427asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
428#endif
429asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
430asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
431asmlinkage long sys_chdir(const char __user *filename);
432asmlinkage long sys_fchdir(unsigned int fd);
433asmlinkage long sys_chroot(const char __user *filename);
434asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
435asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
436 umode_t mode);
437asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
438 gid_t group, int flag);
439asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
440asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
441 umode_t mode);
442asmlinkage long sys_openat2(int dfd, const char __user *filename,
443 struct open_how *how, size_t size);
444asmlinkage long sys_close(unsigned int fd);
445asmlinkage long sys_vhangup(void);
446
447/* fs/pipe.c */
448asmlinkage long sys_pipe2(int __user *fildes, int flags);
449
450/* fs/quota.c */
451asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
452 qid_t id, void __user *addr);
453
454/* fs/readdir.c */
455asmlinkage long sys_getdents64(unsigned int fd,
456 struct linux_dirent64 __user *dirent,
457 unsigned int count);
458
459/* fs/read_write.c */
460asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
461 unsigned long offset_low, loff_t __user *result,
462 unsigned int whence);
463asmlinkage long sys_lseek(unsigned int fd, off_t offset,
464 unsigned int whence);
465asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
466asmlinkage long sys_write(unsigned int fd, const char __user *buf,
467 size_t count);
468asmlinkage long sys_readv(unsigned long fd,
469 const struct iovec __user *vec,
470 unsigned long vlen);
471asmlinkage long sys_writev(unsigned long fd,
472 const struct iovec __user *vec,
473 unsigned long vlen);
474asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
475 size_t count, loff_t pos);
476asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
477 size_t count, loff_t pos);
478asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
479 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
480asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
481 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
482
483/* fs/sendfile.c */
484asmlinkage long sys_sendfile64(int out_fd, int in_fd,
485 loff_t __user *offset, size_t count);
486
487/* fs/select.c */
488asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
489 fd_set __user *, struct __kernel_timespec __user *,
490 void __user *);
491asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
492 fd_set __user *, struct old_timespec32 __user *,
493 void __user *);
494asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
495 struct __kernel_timespec __user *, const sigset_t __user *,
496 size_t);
497asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
498 struct old_timespec32 __user *, const sigset_t __user *,
499 size_t);
500
501/* fs/signalfd.c */
502asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
503
504/* fs/splice.c */
505asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
506 unsigned long nr_segs, unsigned int flags);
507asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
508 int fd_out, loff_t __user *off_out,
509 size_t len, unsigned int flags);
510asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
511
512/* fs/stat.c */
513asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
514 int bufsiz);
515asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
516 struct stat __user *statbuf, int flag);
517asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
518#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
519asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
520asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
521 struct stat64 __user *statbuf, int flag);
522#endif
523
524/* fs/sync.c */
525asmlinkage long sys_sync(void);
526asmlinkage long sys_fsync(unsigned int fd);
527asmlinkage long sys_fdatasync(unsigned int fd);
528asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
529 loff_t offset, loff_t nbytes);
530asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
531 unsigned int flags);
532
533/* fs/timerfd.c */
534asmlinkage long sys_timerfd_create(int clockid, int flags);
535asmlinkage long sys_timerfd_settime(int ufd, int flags,
536 const struct __kernel_itimerspec __user *utmr,
537 struct __kernel_itimerspec __user *otmr);
538asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
539asmlinkage long sys_timerfd_gettime32(int ufd,
540 struct old_itimerspec32 __user *otmr);
541asmlinkage long sys_timerfd_settime32(int ufd, int flags,
542 const struct old_itimerspec32 __user *utmr,
543 struct old_itimerspec32 __user *otmr);
544
545/* fs/utimes.c */
546asmlinkage long sys_utimensat(int dfd, const char __user *filename,
547 struct __kernel_timespec __user *utimes,
548 int flags);
549asmlinkage long sys_utimensat_time32(unsigned int dfd,
550 const char __user *filename,
551 struct old_timespec32 __user *t, int flags);
552
553/* kernel/acct.c */
554asmlinkage long sys_acct(const char __user *name);
555
556/* kernel/capability.c */
557asmlinkage long sys_capget(cap_user_header_t header,
558 cap_user_data_t dataptr);
559asmlinkage long sys_capset(cap_user_header_t header,
560 const cap_user_data_t data);
561
562/* kernel/exec_domain.c */
563asmlinkage long sys_personality(unsigned int personality);
564
565/* kernel/exit.c */
566asmlinkage long sys_exit(int error_code);
567asmlinkage long sys_exit_group(int error_code);
568asmlinkage long sys_waitid(int which, pid_t pid,
569 struct siginfo __user *infop,
570 int options, struct rusage __user *ru);
571
572/* kernel/fork.c */
573asmlinkage long sys_set_tid_address(int __user *tidptr);
574asmlinkage long sys_unshare(unsigned long unshare_flags);
575
576/* kernel/futex.c */
577asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
578 struct __kernel_timespec __user *utime, u32 __user *uaddr2,
579 u32 val3);
580asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
581 struct old_timespec32 __user *utime, u32 __user *uaddr2,
582 u32 val3);
583asmlinkage long sys_get_robust_list(int pid,
584 struct robust_list_head __user * __user *head_ptr,
585 size_t __user *len_ptr);
586asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
587 size_t len);
588
589/* kernel/hrtimer.c */
590asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
591 struct __kernel_timespec __user *rmtp);
592asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp,
593 struct old_timespec32 __user *rmtp);
594
595/* kernel/itimer.c */
596asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value);
597asmlinkage long sys_setitimer(int which,
598 struct __kernel_old_itimerval __user *value,
599 struct __kernel_old_itimerval __user *ovalue);
600
601/* kernel/kexec.c */
602asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
603 struct kexec_segment __user *segments,
604 unsigned long flags);
605
606/* kernel/module.c */
607asmlinkage long sys_init_module(void __user *umod, unsigned long len,
608 const char __user *uargs);
609asmlinkage long sys_delete_module(const char __user *name_user,
610 unsigned int flags);
611
612/* kernel/posix-timers.c */
613asmlinkage long sys_timer_create(clockid_t which_clock,
614 struct sigevent __user *timer_event_spec,
615 timer_t __user * created_timer_id);
616asmlinkage long sys_timer_gettime(timer_t timer_id,
617 struct __kernel_itimerspec __user *setting);
618asmlinkage long sys_timer_getoverrun(timer_t timer_id);
619asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
620 const struct __kernel_itimerspec __user *new_setting,
621 struct __kernel_itimerspec __user *old_setting);
622asmlinkage long sys_timer_delete(timer_t timer_id);
623asmlinkage long sys_clock_settime(clockid_t which_clock,
624 const struct __kernel_timespec __user *tp);
625asmlinkage long sys_clock_gettime(clockid_t which_clock,
626 struct __kernel_timespec __user *tp);
627asmlinkage long sys_clock_getres(clockid_t which_clock,
628 struct __kernel_timespec __user *tp);
629asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
630 const struct __kernel_timespec __user *rqtp,
631 struct __kernel_timespec __user *rmtp);
632asmlinkage long sys_timer_gettime32(timer_t timer_id,
633 struct old_itimerspec32 __user *setting);
634asmlinkage long sys_timer_settime32(timer_t timer_id, int flags,
635 struct old_itimerspec32 __user *new,
636 struct old_itimerspec32 __user *old);
637asmlinkage long sys_clock_settime32(clockid_t which_clock,
638 struct old_timespec32 __user *tp);
639asmlinkage long sys_clock_gettime32(clockid_t which_clock,
640 struct old_timespec32 __user *tp);
641asmlinkage long sys_clock_getres_time32(clockid_t which_clock,
642 struct old_timespec32 __user *tp);
643asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags,
644 struct old_timespec32 __user *rqtp,
645 struct old_timespec32 __user *rmtp);
646
647/* kernel/printk.c */
648asmlinkage long sys_syslog(int type, char __user *buf, int len);
649
650/* kernel/ptrace.c */
651asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
652 unsigned long data);
653/* kernel/sched/core.c */
654
655asmlinkage long sys_sched_setparam(pid_t pid,
656 struct sched_param __user *param);
657asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
658 struct sched_param __user *param);
659asmlinkage long sys_sched_getscheduler(pid_t pid);
660asmlinkage long sys_sched_getparam(pid_t pid,
661 struct sched_param __user *param);
662asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
663 unsigned long __user *user_mask_ptr);
664asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
665 unsigned long __user *user_mask_ptr);
666asmlinkage long sys_sched_yield(void);
667asmlinkage long sys_sched_get_priority_max(int policy);
668asmlinkage long sys_sched_get_priority_min(int policy);
669asmlinkage long sys_sched_rr_get_interval(pid_t pid,
670 struct __kernel_timespec __user *interval);
671asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid,
672 struct old_timespec32 __user *interval);
673
674/* kernel/signal.c */
675asmlinkage long sys_restart_syscall(void);
676asmlinkage long sys_kill(pid_t pid, int sig);
677asmlinkage long sys_tkill(pid_t pid, int sig);
678asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
679asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
680 struct sigaltstack __user *uoss);
681asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
682#ifndef CONFIG_ODD_RT_SIGACTION
683asmlinkage long sys_rt_sigaction(int,
684 const struct sigaction __user *,
685 struct sigaction __user *,
686 size_t);
687#endif
688asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
689 sigset_t __user *oset, size_t sigsetsize);
690asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
691asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
692 siginfo_t __user *uinfo,
693 const struct __kernel_timespec __user *uts,
694 size_t sigsetsize);
695asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
696 siginfo_t __user *uinfo,
697 const struct old_timespec32 __user *uts,
698 size_t sigsetsize);
699asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
700
701/* kernel/sys.c */
702asmlinkage long sys_setpriority(int which, int who, int niceval);
703asmlinkage long sys_getpriority(int which, int who);
704asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
705 void __user *arg);
706asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
707asmlinkage long sys_setgid(gid_t gid);
708asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
709asmlinkage long sys_setuid(uid_t uid);
710asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
711asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
712asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
713asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
714asmlinkage long sys_setfsuid(uid_t uid);
715asmlinkage long sys_setfsgid(gid_t gid);
716asmlinkage long sys_times(struct tms __user *tbuf);
717asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
718asmlinkage long sys_getpgid(pid_t pid);
719asmlinkage long sys_getsid(pid_t pid);
720asmlinkage long sys_setsid(void);
721asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
722asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
723asmlinkage long sys_newuname(struct new_utsname __user *name);
724asmlinkage long sys_sethostname(char __user *name, int len);
725asmlinkage long sys_setdomainname(char __user *name, int len);
726asmlinkage long sys_getrlimit(unsigned int resource,
727 struct rlimit __user *rlim);
728asmlinkage long sys_setrlimit(unsigned int resource,
729 struct rlimit __user *rlim);
730asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
731asmlinkage long sys_umask(int mask);
732asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
733 unsigned long arg4, unsigned long arg5);
734asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
735
736/* kernel/time.c */
737asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv,
738 struct timezone __user *tz);
739asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv,
740 struct timezone __user *tz);
741asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p);
742asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p);
743
744/* kernel/timer.c */
745asmlinkage long sys_getpid(void);
746asmlinkage long sys_getppid(void);
747asmlinkage long sys_getuid(void);
748asmlinkage long sys_geteuid(void);
749asmlinkage long sys_getgid(void);
750asmlinkage long sys_getegid(void);
751asmlinkage long sys_gettid(void);
752asmlinkage long sys_sysinfo(struct sysinfo __user *info);
753
754/* ipc/mqueue.c */
755asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
756asmlinkage long sys_mq_unlink(const char __user *name);
757asmlinkage 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);
758asmlinkage 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);
759asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
760asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
761asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes,
762 char __user *u_msg_ptr,
763 unsigned int msg_len, unsigned int __user *u_msg_prio,
764 const struct old_timespec32 __user *u_abs_timeout);
765asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes,
766 const char __user *u_msg_ptr,
767 unsigned int msg_len, unsigned int msg_prio,
768 const struct old_timespec32 __user *u_abs_timeout);
769
770/* ipc/msg.c */
771asmlinkage long sys_msgget(key_t key, int msgflg);
772asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
773asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
774asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
775 size_t msgsz, long msgtyp, int msgflg);
776asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
777 size_t msgsz, int msgflg);
778
779/* ipc/sem.c */
780asmlinkage long sys_semget(key_t key, int nsems, int semflg);
781asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
782asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
783asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
784 unsigned nsops,
785 const struct __kernel_timespec __user *timeout);
786asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops,
787 unsigned nsops,
788 const struct old_timespec32 __user *timeout);
789asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
790 unsigned nsops);
791
792/* ipc/shm.c */
793asmlinkage long sys_shmget(key_t key, size_t size, int flag);
794asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
795asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
796asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
797asmlinkage long sys_shmdt(char __user *shmaddr);
798
799/* net/socket.c */
800asmlinkage long sys_socket(int, int, int);
801asmlinkage long sys_socketpair(int, int, int, int __user *);
802asmlinkage long sys_bind(int, struct sockaddr __user *, int);
803asmlinkage long sys_listen(int, int);
804asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
805asmlinkage long sys_connect(int, struct sockaddr __user *, int);
806asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
807asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
808asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
809 struct sockaddr __user *, int);
810asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
811 struct sockaddr __user *, int __user *);
812asmlinkage long sys_setsockopt(int fd, int level, int optname,
813 char __user *optval, int optlen);
814asmlinkage long sys_getsockopt(int fd, int level, int optname,
815 char __user *optval, int __user *optlen);
816asmlinkage long sys_shutdown(int, int);
817asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
818asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
819
820/* mm/filemap.c */
821asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
822
823/* mm/nommu.c, also with MMU */
824asmlinkage long sys_brk(unsigned long brk);
825asmlinkage long sys_munmap(unsigned long addr, size_t len);
826asmlinkage long sys_mremap(unsigned long addr,
827 unsigned long old_len, unsigned long new_len,
828 unsigned long flags, unsigned long new_addr);
829
830/* security/keys/keyctl.c */
831asmlinkage long sys_add_key(const char __user *_type,
832 const char __user *_description,
833 const void __user *_payload,
834 size_t plen,
835 key_serial_t destringid);
836asmlinkage long sys_request_key(const char __user *_type,
837 const char __user *_description,
838 const char __user *_callout_info,
839 key_serial_t destringid);
840asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
841 unsigned long arg4, unsigned long arg5);
842
843/* arch/example/kernel/sys_example.c */
844#ifdef CONFIG_CLONE_BACKWARDS
845asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
846 int __user *);
847#else
848#ifdef CONFIG_CLONE_BACKWARDS3
849asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
850 int __user *, unsigned long);
851#else
852asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
853 int __user *, unsigned long);
854#endif
855#endif
856
857asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size);
858
859asmlinkage long sys_execve(const char __user *filename,
860 const char __user *const __user *argv,
861 const char __user *const __user *envp);
862
863/* mm/fadvise.c */
864asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
865
866/* mm/, CONFIG_MMU only */
867asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
868asmlinkage long sys_swapoff(const char __user *specialfile);
869asmlinkage long sys_mprotect(unsigned long start, size_t len,
870 unsigned long prot);
871asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
872asmlinkage long sys_mlock(unsigned long start, size_t len);
873asmlinkage long sys_munlock(unsigned long start, size_t len);
874asmlinkage long sys_mlockall(int flags);
875asmlinkage long sys_munlockall(void);
876asmlinkage long sys_mincore(unsigned long start, size_t len,
877 unsigned char __user * vec);
878asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
879asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
880 unsigned long prot, unsigned long pgoff,
881 unsigned long flags);
882asmlinkage long sys_mbind(unsigned long start, unsigned long len,
883 unsigned long mode,
884 const unsigned long __user *nmask,
885 unsigned long maxnode,
886 unsigned flags);
887asmlinkage long sys_get_mempolicy(int __user *policy,
888 unsigned long __user *nmask,
889 unsigned long maxnode,
890 unsigned long addr, unsigned long flags);
891asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
892 unsigned long maxnode);
893asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
894 const unsigned long __user *from,
895 const unsigned long __user *to);
896asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
897 const void __user * __user *pages,
898 const int __user *nodes,
899 int __user *status,
900 int flags);
901
902asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
903 siginfo_t __user *uinfo);
904asmlinkage long sys_perf_event_open(
905 struct perf_event_attr __user *attr_uptr,
906 pid_t pid, int cpu, int group_fd, unsigned long flags);
907asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
908asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
909 unsigned int vlen, unsigned flags,
910 struct __kernel_timespec __user *timeout);
911asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
912 unsigned int vlen, unsigned flags,
913 struct old_timespec32 __user *timeout);
914
915asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
916 int options, struct rusage __user *ru);
917asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
918 const struct rlimit64 __user *new_rlim,
919 struct rlimit64 __user *old_rlim);
920asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
921asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
922 u64 mask, int fd,
923 const char __user *pathname);
924asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
925 struct file_handle __user *handle,
926 int __user *mnt_id, int flag);
927asmlinkage long sys_open_by_handle_at(int mountdirfd,
928 struct file_handle __user *handle,
929 int flags);
930asmlinkage long sys_clock_adjtime(clockid_t which_clock,
931 struct __kernel_timex __user *tx);
932asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
933 struct old_timex32 __user *tx);
934asmlinkage long sys_syncfs(int fd);
935asmlinkage long sys_setns(int fd, int nstype);
936asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags);
937asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
938 unsigned int vlen, unsigned flags);
939asmlinkage long sys_process_vm_readv(pid_t pid,
940 const struct iovec __user *lvec,
941 unsigned long liovcnt,
942 const struct iovec __user *rvec,
943 unsigned long riovcnt,
944 unsigned long flags);
945asmlinkage long sys_process_vm_writev(pid_t pid,
946 const struct iovec __user *lvec,
947 unsigned long liovcnt,
948 const struct iovec __user *rvec,
949 unsigned long riovcnt,
950 unsigned long flags);
951asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
952 unsigned long idx1, unsigned long idx2);
953asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
954asmlinkage long sys_sched_setattr(pid_t pid,
955 struct sched_attr __user *attr,
956 unsigned int flags);
957asmlinkage long sys_sched_getattr(pid_t pid,
958 struct sched_attr __user *attr,
959 unsigned int size,
960 unsigned int flags);
961asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
962 int newdfd, const char __user *newname,
963 unsigned int flags);
964asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
965 void __user *uargs);
966asmlinkage long sys_getrandom(char __user *buf, size_t count,
967 unsigned int flags);
968asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
969asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
970asmlinkage long sys_execveat(int dfd, const char __user *filename,
971 const char __user *const __user *argv,
972 const char __user *const __user *envp, int flags);
973asmlinkage long sys_userfaultfd(int flags);
974asmlinkage long sys_membarrier(int cmd, int flags);
975asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
976asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
977 int fd_out, loff_t __user *off_out,
978 size_t len, unsigned int flags);
979asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
980 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
981 rwf_t flags);
982asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
983 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
984 rwf_t flags);
985asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
986 unsigned long prot, int pkey);
987asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
988asmlinkage long sys_pkey_free(int pkey);
989asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
990 unsigned mask, struct statx __user *buffer);
991asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
992 int flags, uint32_t sig);
993asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags);
994asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path,
995 int to_dfd, const char __user *to_path,
996 unsigned int ms_flags);
997asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags);
998asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key,
999 const void __user *value, int aux);
1000asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags);
1001asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags);
1002asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
1003 siginfo_t __user *info,
1004 unsigned int flags);
1005asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags);
1006
1007/*
1008 * Architecture-specific system calls
1009 */
1010
1011/* arch/x86/kernel/ioport.c */
1012asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
1013
1014/* pciconfig: alpha, arm, arm64, ia64, sparc */
1015asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
1016 unsigned long off, unsigned long len,
1017 void __user *buf);
1018asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
1019 unsigned long off, unsigned long len,
1020 void __user *buf);
1021asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
1022
1023/* powerpc */
1024asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
1025 __u32 __user *ustatus);
1026asmlinkage long sys_spu_create(const char __user *name,
1027 unsigned int flags, umode_t mode, int fd);
1028
1029
1030/*
1031 * Deprecated system calls which are still defined in
1032 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
1033 */
1034
1035/* __ARCH_WANT_SYSCALL_NO_AT */
1036asmlinkage long sys_open(const char __user *filename,
1037 int flags, umode_t mode);
1038asmlinkage long sys_link(const char __user *oldname,
1039 const char __user *newname);
1040asmlinkage long sys_unlink(const char __user *pathname);
1041asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
1042 unsigned dev);
1043asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
1044asmlinkage long sys_chown(const char __user *filename,
1045 uid_t user, gid_t group);
1046asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
1047asmlinkage long sys_rmdir(const char __user *pathname);
1048asmlinkage long sys_lchown(const char __user *filename,
1049 uid_t user, gid_t group);
1050asmlinkage long sys_access(const char __user *filename, int mode);
1051asmlinkage long sys_rename(const char __user *oldname,
1052 const char __user *newname);
1053asmlinkage long sys_symlink(const char __user *old, const char __user *new);
1054#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
1055asmlinkage long sys_stat64(const char __user *filename,
1056 struct stat64 __user *statbuf);
1057asmlinkage long sys_lstat64(const char __user *filename,
1058 struct stat64 __user *statbuf);
1059#endif
1060
1061/* __ARCH_WANT_SYSCALL_NO_FLAGS */
1062asmlinkage long sys_pipe(int __user *fildes);
1063asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
1064asmlinkage long sys_epoll_create(int size);
1065asmlinkage long sys_inotify_init(void);
1066asmlinkage long sys_eventfd(unsigned int count);
1067asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
1068
1069/* __ARCH_WANT_SYSCALL_OFF_T */
1070asmlinkage long sys_sendfile(int out_fd, int in_fd,
1071 off_t __user *offset, size_t count);
1072asmlinkage long sys_newstat(const char __user *filename,
1073 struct stat __user *statbuf);
1074asmlinkage long sys_newlstat(const char __user *filename,
1075 struct stat __user *statbuf);
1076asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
1077
1078/* __ARCH_WANT_SYSCALL_DEPRECATED */
1079asmlinkage long sys_alarm(unsigned int seconds);
1080asmlinkage long sys_getpgrp(void);
1081asmlinkage long sys_pause(void);
1082asmlinkage long sys_time(__kernel_old_time_t __user *tloc);
1083asmlinkage long sys_time32(old_time32_t __user *tloc);
1084#ifdef __ARCH_WANT_SYS_UTIME
1085asmlinkage long sys_utime(char __user *filename,
1086 struct utimbuf __user *times);
1087asmlinkage long sys_utimes(char __user *filename,
1088 struct __kernel_old_timeval __user *utimes);
1089asmlinkage long sys_futimesat(int dfd, const char __user *filename,
1090 struct __kernel_old_timeval __user *utimes);
1091#endif
1092asmlinkage long sys_futimesat_time32(unsigned int dfd,
1093 const char __user *filename,
1094 struct old_timeval32 __user *t);
1095asmlinkage long sys_utime32(const char __user *filename,
1096 struct old_utimbuf32 __user *t);
1097asmlinkage long sys_utimes_time32(const char __user *filename,
1098 struct old_timeval32 __user *t);
1099asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
1100asmlinkage long sys_getdents(unsigned int fd,
1101 struct linux_dirent __user *dirent,
1102 unsigned int count);
1103asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
1104 fd_set __user *exp, struct __kernel_old_timeval __user *tvp);
1105asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
1106 int timeout);
1107asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1108 int maxevents, int timeout);
1109asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1110asmlinkage long sys_vfork(void);
1111asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1112asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1113asmlinkage long sys_bdflush(int func, long data);
1114asmlinkage long sys_oldumount(char __user *name);
1115asmlinkage long sys_uselib(const char __user *library);
1116asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
1117asmlinkage long sys_sysfs(int option,
1118 unsigned long arg1, unsigned long arg2);
1119asmlinkage long sys_fork(void);
1120
1121/* obsolete: kernel/time/time.c */
1122asmlinkage long sys_stime(__kernel_old_time_t __user *tptr);
1123asmlinkage long sys_stime32(old_time32_t __user *tptr);
1124
1125/* obsolete: kernel/signal.c */
1126asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1127asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1128 old_sigset_t __user *oset);
1129#ifdef CONFIG_OLD_SIGSUSPEND
1130asmlinkage long sys_sigsuspend(old_sigset_t mask);
1131#endif
1132
1133#ifdef CONFIG_OLD_SIGSUSPEND3
1134asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1135#endif
1136
1137#ifdef CONFIG_OLD_SIGACTION
1138asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1139 struct old_sigaction __user *);
1140#endif
1141asmlinkage long sys_sgetmask(void);
1142asmlinkage long sys_ssetmask(int newmask);
1143asmlinkage long sys_signal(int sig, __sighandler_t handler);
1144
1145/* obsolete: kernel/sched/core.c */
1146asmlinkage long sys_nice(int increment);
1147
1148/* obsolete: kernel/kexec_file.c */
1149asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1150 unsigned long cmdline_len,
1151 const char __user *cmdline_ptr,
1152 unsigned long flags);
1153
1154/* obsolete: kernel/exit.c */
1155asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1156
1157/* obsolete: kernel/uid16.c */
1158#ifdef CONFIG_HAVE_UID16
1159asmlinkage long sys_chown16(const char __user *filename,
1160 old_uid_t user, old_gid_t group);
1161asmlinkage long sys_lchown16(const char __user *filename,
1162 old_uid_t user, old_gid_t group);
1163asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1164asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1165asmlinkage long sys_setgid16(old_gid_t gid);
1166asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1167asmlinkage long sys_setuid16(old_uid_t uid);
1168asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1169asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1170 old_uid_t __user *euid, old_uid_t __user *suid);
1171asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1172asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1173 old_gid_t __user *egid, old_gid_t __user *sgid);
1174asmlinkage long sys_setfsuid16(old_uid_t uid);
1175asmlinkage long sys_setfsgid16(old_gid_t gid);
1176asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1177asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1178asmlinkage long sys_getuid16(void);
1179asmlinkage long sys_geteuid16(void);
1180asmlinkage long sys_getgid16(void);
1181asmlinkage long sys_getegid16(void);
1182#endif
1183
1184/* obsolete: net/socket.c */
1185asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1186
1187/* obsolete: fs/stat.c */
1188asmlinkage long sys_stat(const char __user *filename,
1189 struct __old_kernel_stat __user *statbuf);
1190asmlinkage long sys_lstat(const char __user *filename,
1191 struct __old_kernel_stat __user *statbuf);
1192asmlinkage long sys_fstat(unsigned int fd,
1193 struct __old_kernel_stat __user *statbuf);
1194asmlinkage long sys_readlink(const char __user *path,
1195 char __user *buf, int bufsiz);
1196
1197/* obsolete: fs/select.c */
1198asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1199
1200/* obsolete: fs/readdir.c */
1201asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1202
1203/* obsolete: kernel/sys.c */
1204asmlinkage long sys_gethostname(char __user *name, int len);
1205asmlinkage long sys_uname(struct old_utsname __user *);
1206asmlinkage long sys_olduname(struct oldold_utsname __user *);
1207#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1208asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1209#endif
1210
1211/* obsolete: ipc */
1212asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1213 unsigned long third, void __user *ptr, long fifth);
1214
1215/* obsolete: mm/ */
1216asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1217 unsigned long prot, unsigned long flags,
1218 unsigned long fd, unsigned long pgoff);
1219asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1220
1221
1222/*
1223 * Not a real system call, but a placeholder for syscalls which are
1224 * not implemented -- see kernel/sys_ni.c
1225 */
1226asmlinkage long sys_ni_syscall(void);
1227
1228#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1229
1230
1231/*
1232 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1233 * Instead, use one of the functions which work equivalently, such as
1234 * the ksys_xyzyyz() functions prototyped below.
1235 */
1236
1237int ksys_umount(char __user *name, int flags);
1238int ksys_dup(unsigned int fildes);
1239int ksys_chroot(const char __user *filename);
1240ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1241int ksys_chdir(const char __user *filename);
1242int ksys_fchmod(unsigned int fd, umode_t mode);
1243int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1244int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent,
1245 unsigned int count);
1246int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
1247off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence);
1248ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1249void ksys_sync(void);
1250int ksys_unshare(unsigned long unshare_flags);
1251int ksys_setsid(void);
1252int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1253 unsigned int flags);
1254ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1255 loff_t pos);
1256ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1257 size_t count, loff_t pos);
1258int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1259#ifdef CONFIG_ADVISE_SYSCALLS
1260int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1261#else
1262static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1263 int advice)
1264{
1265 return -EINVAL;
1266}
1267#endif
1268unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1269 unsigned long prot, unsigned long flags,
1270 unsigned long fd, unsigned long pgoff);
1271ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1272int ksys_ipc(unsigned int call, int first, unsigned long second,
1273 unsigned long third, void __user * ptr, long fifth);
1274int compat_ksys_ipc(u32 call, int first, int second,
1275 u32 third, u32 ptr, u32 fifth);
1276
1277/*
1278 * The following kernel syscall equivalents are just wrappers to fs-internal
1279 * functions. Therefore, provide stubs to be inlined at the callsites.
1280 */
1281extern long do_unlinkat(int dfd, struct filename *name);
1282
1283static inline long ksys_unlink(const char __user *pathname)
1284{
1285 return do_unlinkat(AT_FDCWD, getname(pathname));
1286}
1287
1288extern long do_rmdir(int dfd, const char __user *pathname);
1289
1290static inline long ksys_rmdir(const char __user *pathname)
1291{
1292 return do_rmdir(AT_FDCWD, pathname);
1293}
1294
1295extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
1296
1297static inline long ksys_mkdir(const char __user *pathname, umode_t mode)
1298{
1299 return do_mkdirat(AT_FDCWD, pathname, mode);
1300}
1301
1302extern long do_symlinkat(const char __user *oldname, int newdfd,
1303 const char __user *newname);
1304
1305static inline long ksys_symlink(const char __user *oldname,
1306 const char __user *newname)
1307{
1308 return do_symlinkat(oldname, AT_FDCWD, newname);
1309}
1310
1311extern long do_mknodat(int dfd, const char __user *filename, umode_t mode,
1312 unsigned int dev);
1313
1314static inline long ksys_mknod(const char __user *filename, umode_t mode,
1315 unsigned int dev)
1316{
1317 return do_mknodat(AT_FDCWD, filename, mode, dev);
1318}
1319
1320extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
1321 const char __user *newname, int flags);
1322
1323static inline long ksys_link(const char __user *oldname,
1324 const char __user *newname)
1325{
1326 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
1327}
1328
1329extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
1330
1331static inline int ksys_chmod(const char __user *filename, umode_t mode)
1332{
1333 return do_fchmodat(AT_FDCWD, filename, mode);
1334}
1335
1336extern long do_faccessat(int dfd, const char __user *filename, int mode);
1337
1338static inline long ksys_access(const char __user *filename, int mode)
1339{
1340 return do_faccessat(AT_FDCWD, filename, mode);
1341}
1342
1343extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1344 gid_t group, int flag);
1345
1346static inline long ksys_chown(const char __user *filename, uid_t user,
1347 gid_t group)
1348{
1349 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1350}
1351
1352static inline long ksys_lchown(const char __user *filename, uid_t user,
1353 gid_t group)
1354{
1355 return do_fchownat(AT_FDCWD, filename, user, group,
1356 AT_SYMLINK_NOFOLLOW);
1357}
1358
1359extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1360
1361static inline long ksys_ftruncate(unsigned int fd, unsigned long length)
1362{
1363 return do_sys_ftruncate(fd, length, 1);
1364}
1365
1366extern int __close_fd(struct files_struct *files, unsigned int fd);
1367
1368/*
1369 * In contrast to sys_close(), this stub does not check whether the syscall
1370 * should or should not be restarted, but returns the raw error codes from
1371 * __close_fd().
1372 */
1373static inline int ksys_close(unsigned int fd)
1374{
1375 return __close_fd(current->files, fd);
1376}
1377
1378extern long do_sys_open(int dfd, const char __user *filename, int flags,
1379 umode_t mode);
1380
1381static inline long ksys_open(const char __user *filename, int flags,
1382 umode_t mode)
1383{
1384 if (force_o_largefile())
1385 flags |= O_LARGEFILE;
1386 return do_sys_open(AT_FDCWD, filename, flags, mode);
1387}
1388
1389extern long do_sys_truncate(const char __user *pathname, loff_t length);
1390
1391static inline long ksys_truncate(const char __user *pathname, loff_t length)
1392{
1393 return do_sys_truncate(pathname, length);
1394}
1395
1396static inline unsigned int ksys_personality(unsigned int personality)
1397{
1398 unsigned int old = current->personality;
1399
1400 if (personality != 0xffffffff)
1401 set_personality(personality);
1402
1403 return old;
1404}
1405
1406/* for __ARCH_WANT_SYS_IPC */
1407long ksys_semtimedop(int semid, struct sembuf __user *tsops,
1408 unsigned int nsops,
1409 const struct __kernel_timespec __user *timeout);
1410long ksys_semget(key_t key, int nsems, int semflg);
1411long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
1412long ksys_msgget(key_t key, int msgflg);
1413long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
1414long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1415 long msgtyp, int msgflg);
1416long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1417 int msgflg);
1418long ksys_shmget(key_t key, size_t size, int shmflg);
1419long ksys_shmdt(char __user *shmaddr);
1420long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
1421long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
1422 unsigned int nsops,
1423 const struct old_timespec32 __user *timeout);
1424
1425#endif