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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 itimerspec;
20struct itimerval;
21struct kexec_segment;
22struct linux_dirent;
23struct linux_dirent64;
24struct list_head;
25struct mmap_arg_struct;
26struct msgbuf;
27struct user_msghdr;
28struct mmsghdr;
29struct msqid_ds;
30struct new_utsname;
31struct nfsctl_arg;
32struct __old_kernel_stat;
33struct oldold_utsname;
34struct old_utsname;
35struct pollfd;
36struct rlimit;
37struct rlimit64;
38struct rusage;
39struct sched_param;
40struct sched_attr;
41struct sel_arg_struct;
42struct semaphore;
43struct sembuf;
44struct shmid_ds;
45struct sockaddr;
46struct stat;
47struct stat64;
48struct statfs;
49struct statfs64;
50struct statx;
51struct __sysctl_args;
52struct sysinfo;
53struct timespec;
54struct timeval;
55struct __kernel_timex;
56struct timezone;
57struct tms;
58struct utimbuf;
59struct mq_attr;
60struct compat_stat;
61struct old_timeval32;
62struct robust_list_head;
63struct getcpu_cache;
64struct old_linux_dirent;
65struct perf_event_attr;
66struct file_handle;
67struct sigaltstack;
68struct rseq;
69union bpf_attr;
70struct io_uring_params;
71
72#include <linux/types.h>
73#include <linux/aio_abi.h>
74#include <linux/capability.h>
75#include <linux/signal.h>
76#include <linux/list.h>
77#include <linux/bug.h>
78#include <linux/sem.h>
79#include <asm/siginfo.h>
80#include <linux/unistd.h>
81#include <linux/quota.h>
82#include <linux/key.h>
83#include <linux/personality.h>
84#include <trace/syscall.h>
85
86#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
87/*
88 * It may be useful for an architecture to override the definitions of the
89 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a
90 * different calling convention for syscalls. To allow for that, the prototypes
91 * for the sys_*() functions below will *not* be included if
92 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
93 */
94#include <asm/syscall_wrapper.h>
95#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
96
97/*
98 * __MAP - apply a macro to syscall arguments
99 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
100 * m(t1, a1), m(t2, a2), ..., m(tn, an)
101 * The first argument must be equal to the amount of type/name
102 * pairs given. Note that this list of pairs (i.e. the arguments
103 * of __MAP starting at the third one) is in the same format as
104 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
105 */
106#define __MAP0(m,...)
107#define __MAP1(m,t,a,...) m(t,a)
108#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
109#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
110#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
111#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
112#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
113#define __MAP(n,...) __MAP##n(__VA_ARGS__)
114
115#define __SC_DECL(t, a) t a
116#define __TYPE_AS(t, v) __same_type((__force t)0, v)
117#define __TYPE_IS_L(t) (__TYPE_AS(t, 0L))
118#define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL))
119#define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL))
120#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
121#define __SC_CAST(t, a) (__force t) a
122#define __SC_ARGS(t, a) a
123#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
124
125#ifdef CONFIG_FTRACE_SYSCALLS
126#define __SC_STR_ADECL(t, a) #a
127#define __SC_STR_TDECL(t, a) #t
128
129extern struct trace_event_class event_class_syscall_enter;
130extern struct trace_event_class event_class_syscall_exit;
131extern struct trace_event_functions enter_syscall_print_funcs;
132extern struct trace_event_functions exit_syscall_print_funcs;
133
134#define SYSCALL_TRACE_ENTER_EVENT(sname) \
135 static struct syscall_metadata __syscall_meta_##sname; \
136 static struct trace_event_call __used \
137 event_enter_##sname = { \
138 .class = &event_class_syscall_enter, \
139 { \
140 .name = "sys_enter"#sname, \
141 }, \
142 .event.funcs = &enter_syscall_print_funcs, \
143 .data = (void *)&__syscall_meta_##sname,\
144 .flags = TRACE_EVENT_FL_CAP_ANY, \
145 }; \
146 static struct trace_event_call __used \
147 __attribute__((section("_ftrace_events"))) \
148 *__event_enter_##sname = &event_enter_##sname;
149
150#define SYSCALL_TRACE_EXIT_EVENT(sname) \
151 static struct syscall_metadata __syscall_meta_##sname; \
152 static struct trace_event_call __used \
153 event_exit_##sname = { \
154 .class = &event_class_syscall_exit, \
155 { \
156 .name = "sys_exit"#sname, \
157 }, \
158 .event.funcs = &exit_syscall_print_funcs, \
159 .data = (void *)&__syscall_meta_##sname,\
160 .flags = TRACE_EVENT_FL_CAP_ANY, \
161 }; \
162 static struct trace_event_call __used \
163 __attribute__((section("_ftrace_events"))) \
164 *__event_exit_##sname = &event_exit_##sname;
165
166#define SYSCALL_METADATA(sname, nb, ...) \
167 static const char *types_##sname[] = { \
168 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \
169 }; \
170 static const char *args_##sname[] = { \
171 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \
172 }; \
173 SYSCALL_TRACE_ENTER_EVENT(sname); \
174 SYSCALL_TRACE_EXIT_EVENT(sname); \
175 static struct syscall_metadata __used \
176 __syscall_meta_##sname = { \
177 .name = "sys"#sname, \
178 .syscall_nr = -1, /* Filled in at boot */ \
179 .nb_args = nb, \
180 .types = nb ? types_##sname : NULL, \
181 .args = nb ? args_##sname : NULL, \
182 .enter_event = &event_enter_##sname, \
183 .exit_event = &event_exit_##sname, \
184 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
185 }; \
186 static struct syscall_metadata __used \
187 __attribute__((section("__syscalls_metadata"))) \
188 *__p_syscall_meta_##sname = &__syscall_meta_##sname;
189
190static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
191{
192 return tp_event->class == &event_class_syscall_enter ||
193 tp_event->class == &event_class_syscall_exit;
194}
195
196#else
197#define SYSCALL_METADATA(sname, nb, ...)
198
199static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
200{
201 return 0;
202}
203#endif
204
205#ifndef SYSCALL_DEFINE0
206#define SYSCALL_DEFINE0(sname) \
207 SYSCALL_METADATA(_##sname, 0); \
208 asmlinkage long sys_##sname(void); \
209 ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \
210 asmlinkage long sys_##sname(void)
211#endif /* SYSCALL_DEFINE0 */
212
213#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
214#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
215#define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
216#define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
217#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
218#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
219
220#define SYSCALL_DEFINE_MAXARGS 6
221
222#define SYSCALL_DEFINEx(x, sname, ...) \
223 SYSCALL_METADATA(sname, x, __VA_ARGS__) \
224 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
225
226#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
227
228/*
229 * The asmlinkage stub is aliased to a function named __se_sys_*() which
230 * sign-extends 32-bit ints to longs whenever needed. The actual work is
231 * done within __do_sys_*().
232 */
233#ifndef __SYSCALL_DEFINEx
234#define __SYSCALL_DEFINEx(x, name, ...) \
235 __diag_push(); \
236 __diag_ignore(GCC, 8, "-Wattribute-alias", \
237 "Type aliasing is used to sanitize syscall arguments");\
238 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
239 __attribute__((alias(__stringify(__se_sys##name)))); \
240 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \
241 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
242 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
243 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
244 { \
245 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
246 __MAP(x,__SC_TEST,__VA_ARGS__); \
247 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
248 return ret; \
249 } \
250 __diag_pop(); \
251 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
252#endif /* __SYSCALL_DEFINEx */
253
254/*
255 * Called before coming back to user-mode. Returning to user-mode with an
256 * address limit different than USER_DS can allow to overwrite kernel memory.
257 */
258static inline void addr_limit_user_check(void)
259{
260#ifdef TIF_FSCHECK
261 if (!test_thread_flag(TIF_FSCHECK))
262 return;
263#endif
264
265 if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
266 "Invalid address limit on user-mode return"))
267 force_sig(SIGKILL, current);
268
269#ifdef TIF_FSCHECK
270 clear_thread_flag(TIF_FSCHECK);
271#endif
272}
273
274/*
275 * These syscall function prototypes are kept in the same order as
276 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below,
277 * followed by deprecated or obsolete system calls.
278 *
279 * Please note that these prototypes here are only provided for information
280 * purposes, for static analysis, and for linking from the syscall table.
281 * These functions should not be called elsewhere from kernel code.
282 *
283 * As the syscall calling convention may be different from the default
284 * for architectures overriding the syscall calling convention, do not
285 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
286 */
287#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
288asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
289asmlinkage long sys_io_destroy(aio_context_t ctx);
290asmlinkage long sys_io_submit(aio_context_t, long,
291 struct iocb __user * __user *);
292asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
293 struct io_event __user *result);
294asmlinkage long sys_io_getevents(aio_context_t ctx_id,
295 long min_nr,
296 long nr,
297 struct io_event __user *events,
298 struct __kernel_timespec __user *timeout);
299asmlinkage long sys_io_getevents_time32(__u32 ctx_id,
300 __s32 min_nr,
301 __s32 nr,
302 struct io_event __user *events,
303 struct old_timespec32 __user *timeout);
304asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
305 long min_nr,
306 long nr,
307 struct io_event __user *events,
308 struct __kernel_timespec __user *timeout,
309 const struct __aio_sigset *sig);
310asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
311 long min_nr,
312 long nr,
313 struct io_event __user *events,
314 struct old_timespec32 __user *timeout,
315 const struct __aio_sigset *sig);
316asmlinkage long sys_io_uring_setup(u32 entries,
317 struct io_uring_params __user *p);
318asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit,
319 u32 min_complete, u32 flags,
320 const sigset_t __user *sig, size_t sigsz);
321asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op,
322 void __user *arg, unsigned int nr_args);
323
324/* fs/xattr.c */
325asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
326 const void __user *value, size_t size, int flags);
327asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
328 const void __user *value, size_t size, int flags);
329asmlinkage long sys_fsetxattr(int fd, const char __user *name,
330 const void __user *value, size_t size, int flags);
331asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
332 void __user *value, size_t size);
333asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
334 void __user *value, size_t size);
335asmlinkage long sys_fgetxattr(int fd, const char __user *name,
336 void __user *value, size_t size);
337asmlinkage long sys_listxattr(const char __user *path, char __user *list,
338 size_t size);
339asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
340 size_t size);
341asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
342asmlinkage long sys_removexattr(const char __user *path,
343 const char __user *name);
344asmlinkage long sys_lremovexattr(const char __user *path,
345 const char __user *name);
346asmlinkage long sys_fremovexattr(int fd, const char __user *name);
347
348/* fs/dcache.c */
349asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
350
351/* fs/cookies.c */
352asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
353
354/* fs/eventfd.c */
355asmlinkage long sys_eventfd2(unsigned int count, int flags);
356
357/* fs/eventpoll.c */
358asmlinkage long sys_epoll_create1(int flags);
359asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
360 struct epoll_event __user *event);
361asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
362 int maxevents, int timeout,
363 const sigset_t __user *sigmask,
364 size_t sigsetsize);
365
366/* fs/fcntl.c */
367asmlinkage long sys_dup(unsigned int fildes);
368asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
369asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
370#if BITS_PER_LONG == 32
371asmlinkage long sys_fcntl64(unsigned int fd,
372 unsigned int cmd, unsigned long arg);
373#endif
374
375/* fs/inotify_user.c */
376asmlinkage long sys_inotify_init1(int flags);
377asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
378 u32 mask);
379asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
380
381/* fs/ioctl.c */
382asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
383 unsigned long arg);
384
385/* fs/ioprio.c */
386asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
387asmlinkage long sys_ioprio_get(int which, int who);
388
389/* fs/locks.c */
390asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
391
392/* fs/namei.c */
393asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
394 unsigned dev);
395asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
396asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
397asmlinkage long sys_symlinkat(const char __user * oldname,
398 int newdfd, const char __user * newname);
399asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
400 int newdfd, const char __user *newname, int flags);
401asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
402 int newdfd, const char __user * newname);
403
404/* fs/namespace.c */
405asmlinkage long sys_umount(char __user *name, int flags);
406asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
407 char __user *type, unsigned long flags,
408 void __user *data);
409asmlinkage long sys_pivot_root(const char __user *new_root,
410 const char __user *put_old);
411
412/* fs/nfsctl.c */
413
414/* fs/open.c */
415asmlinkage long sys_statfs(const char __user * path,
416 struct statfs __user *buf);
417asmlinkage long sys_statfs64(const char __user *path, size_t sz,
418 struct statfs64 __user *buf);
419asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
420asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
421 struct statfs64 __user *buf);
422asmlinkage long sys_truncate(const char __user *path, long length);
423asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
424#if BITS_PER_LONG == 32
425asmlinkage long sys_truncate64(const char __user *path, loff_t length);
426asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
427#endif
428asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
429asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
430asmlinkage long sys_chdir(const char __user *filename);
431asmlinkage long sys_fchdir(unsigned int fd);
432asmlinkage long sys_chroot(const char __user *filename);
433asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
434asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
435 umode_t mode);
436asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
437 gid_t group, int flag);
438asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
439asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
440 umode_t mode);
441asmlinkage long sys_close(unsigned int fd);
442asmlinkage long sys_vhangup(void);
443
444/* fs/pipe.c */
445asmlinkage long sys_pipe2(int __user *fildes, int flags);
446
447/* fs/quota.c */
448asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
449 qid_t id, void __user *addr);
450
451/* fs/readdir.c */
452asmlinkage long sys_getdents64(unsigned int fd,
453 struct linux_dirent64 __user *dirent,
454 unsigned int count);
455
456/* fs/read_write.c */
457asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
458 unsigned long offset_low, loff_t __user *result,
459 unsigned int whence);
460asmlinkage long sys_lseek(unsigned int fd, off_t offset,
461 unsigned int whence);
462asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
463asmlinkage long sys_write(unsigned int fd, const char __user *buf,
464 size_t count);
465asmlinkage long sys_readv(unsigned long fd,
466 const struct iovec __user *vec,
467 unsigned long vlen);
468asmlinkage long sys_writev(unsigned long fd,
469 const struct iovec __user *vec,
470 unsigned long vlen);
471asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
472 size_t count, loff_t pos);
473asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
474 size_t count, loff_t pos);
475asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
476 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
477asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
478 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
479
480/* fs/sendfile.c */
481asmlinkage long sys_sendfile64(int out_fd, int in_fd,
482 loff_t __user *offset, size_t count);
483
484/* fs/select.c */
485asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
486 fd_set __user *, struct __kernel_timespec __user *,
487 void __user *);
488asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
489 fd_set __user *, struct old_timespec32 __user *,
490 void __user *);
491asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
492 struct __kernel_timespec __user *, const sigset_t __user *,
493 size_t);
494asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
495 struct old_timespec32 __user *, const sigset_t __user *,
496 size_t);
497
498/* fs/signalfd.c */
499asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
500
501/* fs/splice.c */
502asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
503 unsigned long nr_segs, unsigned int flags);
504asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
505 int fd_out, loff_t __user *off_out,
506 size_t len, unsigned int flags);
507asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
508
509/* fs/stat.c */
510asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
511 int bufsiz);
512asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
513 struct stat __user *statbuf, int flag);
514asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
515#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
516asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
517asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
518 struct stat64 __user *statbuf, int flag);
519#endif
520
521/* fs/sync.c */
522asmlinkage long sys_sync(void);
523asmlinkage long sys_fsync(unsigned int fd);
524asmlinkage long sys_fdatasync(unsigned int fd);
525asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
526 loff_t offset, loff_t nbytes);
527asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
528 unsigned int flags);
529
530/* fs/timerfd.c */
531asmlinkage long sys_timerfd_create(int clockid, int flags);
532asmlinkage long sys_timerfd_settime(int ufd, int flags,
533 const struct __kernel_itimerspec __user *utmr,
534 struct __kernel_itimerspec __user *otmr);
535asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
536asmlinkage long sys_timerfd_gettime32(int ufd,
537 struct old_itimerspec32 __user *otmr);
538asmlinkage long sys_timerfd_settime32(int ufd, int flags,
539 const struct old_itimerspec32 __user *utmr,
540 struct old_itimerspec32 __user *otmr);
541
542/* fs/utimes.c */
543asmlinkage long sys_utimensat(int dfd, const char __user *filename,
544 struct __kernel_timespec __user *utimes,
545 int flags);
546asmlinkage long sys_utimensat_time32(unsigned int dfd,
547 const char __user *filename,
548 struct old_timespec32 __user *t, int flags);
549
550/* kernel/acct.c */
551asmlinkage long sys_acct(const char __user *name);
552
553/* kernel/capability.c */
554asmlinkage long sys_capget(cap_user_header_t header,
555 cap_user_data_t dataptr);
556asmlinkage long sys_capset(cap_user_header_t header,
557 const cap_user_data_t data);
558
559/* kernel/exec_domain.c */
560asmlinkage long sys_personality(unsigned int personality);
561
562/* kernel/exit.c */
563asmlinkage long sys_exit(int error_code);
564asmlinkage long sys_exit_group(int error_code);
565asmlinkage long sys_waitid(int which, pid_t pid,
566 struct siginfo __user *infop,
567 int options, struct rusage __user *ru);
568
569/* kernel/fork.c */
570asmlinkage long sys_set_tid_address(int __user *tidptr);
571asmlinkage long sys_unshare(unsigned long unshare_flags);
572
573/* kernel/futex.c */
574asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
575 struct __kernel_timespec __user *utime, u32 __user *uaddr2,
576 u32 val3);
577asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
578 struct old_timespec32 __user *utime, u32 __user *uaddr2,
579 u32 val3);
580asmlinkage long sys_get_robust_list(int pid,
581 struct robust_list_head __user * __user *head_ptr,
582 size_t __user *len_ptr);
583asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
584 size_t len);
585
586/* kernel/hrtimer.c */
587asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
588 struct __kernel_timespec __user *rmtp);
589asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp,
590 struct old_timespec32 __user *rmtp);
591
592/* kernel/itimer.c */
593asmlinkage long sys_getitimer(int which, struct itimerval __user *value);
594asmlinkage long sys_setitimer(int which,
595 struct itimerval __user *value,
596 struct itimerval __user *ovalue);
597
598/* kernel/kexec.c */
599asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
600 struct kexec_segment __user *segments,
601 unsigned long flags);
602
603/* kernel/module.c */
604asmlinkage long sys_init_module(void __user *umod, unsigned long len,
605 const char __user *uargs);
606asmlinkage long sys_delete_module(const char __user *name_user,
607 unsigned int flags);
608
609/* kernel/posix-timers.c */
610asmlinkage long sys_timer_create(clockid_t which_clock,
611 struct sigevent __user *timer_event_spec,
612 timer_t __user * created_timer_id);
613asmlinkage long sys_timer_gettime(timer_t timer_id,
614 struct __kernel_itimerspec __user *setting);
615asmlinkage long sys_timer_getoverrun(timer_t timer_id);
616asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
617 const struct __kernel_itimerspec __user *new_setting,
618 struct __kernel_itimerspec __user *old_setting);
619asmlinkage long sys_timer_delete(timer_t timer_id);
620asmlinkage long sys_clock_settime(clockid_t which_clock,
621 const struct __kernel_timespec __user *tp);
622asmlinkage long sys_clock_gettime(clockid_t which_clock,
623 struct __kernel_timespec __user *tp);
624asmlinkage long sys_clock_getres(clockid_t which_clock,
625 struct __kernel_timespec __user *tp);
626asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
627 const struct __kernel_timespec __user *rqtp,
628 struct __kernel_timespec __user *rmtp);
629asmlinkage long sys_timer_gettime32(timer_t timer_id,
630 struct old_itimerspec32 __user *setting);
631asmlinkage long sys_timer_settime32(timer_t timer_id, int flags,
632 struct old_itimerspec32 __user *new,
633 struct old_itimerspec32 __user *old);
634asmlinkage long sys_clock_settime32(clockid_t which_clock,
635 struct old_timespec32 __user *tp);
636asmlinkage long sys_clock_gettime32(clockid_t which_clock,
637 struct old_timespec32 __user *tp);
638asmlinkage long sys_clock_getres_time32(clockid_t which_clock,
639 struct old_timespec32 __user *tp);
640asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags,
641 struct old_timespec32 __user *rqtp,
642 struct old_timespec32 __user *rmtp);
643
644/* kernel/printk.c */
645asmlinkage long sys_syslog(int type, char __user *buf, int len);
646
647/* kernel/ptrace.c */
648asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
649 unsigned long data);
650/* kernel/sched/core.c */
651
652asmlinkage long sys_sched_setparam(pid_t pid,
653 struct sched_param __user *param);
654asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
655 struct sched_param __user *param);
656asmlinkage long sys_sched_getscheduler(pid_t pid);
657asmlinkage long sys_sched_getparam(pid_t pid,
658 struct sched_param __user *param);
659asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
660 unsigned long __user *user_mask_ptr);
661asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
662 unsigned long __user *user_mask_ptr);
663asmlinkage long sys_sched_yield(void);
664asmlinkage long sys_sched_get_priority_max(int policy);
665asmlinkage long sys_sched_get_priority_min(int policy);
666asmlinkage long sys_sched_rr_get_interval(pid_t pid,
667 struct __kernel_timespec __user *interval);
668asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid,
669 struct old_timespec32 __user *interval);
670
671/* kernel/signal.c */
672asmlinkage long sys_restart_syscall(void);
673asmlinkage long sys_kill(pid_t pid, int sig);
674asmlinkage long sys_tkill(pid_t pid, int sig);
675asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
676asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
677 struct sigaltstack __user *uoss);
678asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
679#ifndef CONFIG_ODD_RT_SIGACTION
680asmlinkage long sys_rt_sigaction(int,
681 const struct sigaction __user *,
682 struct sigaction __user *,
683 size_t);
684#endif
685asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
686 sigset_t __user *oset, size_t sigsetsize);
687asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
688asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
689 siginfo_t __user *uinfo,
690 const struct __kernel_timespec __user *uts,
691 size_t sigsetsize);
692asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
693 siginfo_t __user *uinfo,
694 const struct old_timespec32 __user *uts,
695 size_t sigsetsize);
696asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
697
698/* kernel/sys.c */
699asmlinkage long sys_setpriority(int which, int who, int niceval);
700asmlinkage long sys_getpriority(int which, int who);
701asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
702 void __user *arg);
703asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
704asmlinkage long sys_setgid(gid_t gid);
705asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
706asmlinkage long sys_setuid(uid_t uid);
707asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
708asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
709asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
710asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
711asmlinkage long sys_setfsuid(uid_t uid);
712asmlinkage long sys_setfsgid(gid_t gid);
713asmlinkage long sys_times(struct tms __user *tbuf);
714asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
715asmlinkage long sys_getpgid(pid_t pid);
716asmlinkage long sys_getsid(pid_t pid);
717asmlinkage long sys_setsid(void);
718asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
719asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
720asmlinkage long sys_newuname(struct new_utsname __user *name);
721asmlinkage long sys_sethostname(char __user *name, int len);
722asmlinkage long sys_setdomainname(char __user *name, int len);
723asmlinkage long sys_getrlimit(unsigned int resource,
724 struct rlimit __user *rlim);
725asmlinkage long sys_setrlimit(unsigned int resource,
726 struct rlimit __user *rlim);
727asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
728asmlinkage long sys_umask(int mask);
729asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
730 unsigned long arg4, unsigned long arg5);
731asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
732
733/* kernel/time.c */
734asmlinkage long sys_gettimeofday(struct timeval __user *tv,
735 struct timezone __user *tz);
736asmlinkage long sys_settimeofday(struct timeval __user *tv,
737 struct timezone __user *tz);
738asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p);
739asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p);
740
741/* kernel/timer.c */
742asmlinkage long sys_getpid(void);
743asmlinkage long sys_getppid(void);
744asmlinkage long sys_getuid(void);
745asmlinkage long sys_geteuid(void);
746asmlinkage long sys_getgid(void);
747asmlinkage long sys_getegid(void);
748asmlinkage long sys_gettid(void);
749asmlinkage long sys_sysinfo(struct sysinfo __user *info);
750
751/* ipc/mqueue.c */
752asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
753asmlinkage long sys_mq_unlink(const char __user *name);
754asmlinkage 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);
755asmlinkage 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);
756asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
757asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
758asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes,
759 char __user *u_msg_ptr,
760 unsigned int msg_len, unsigned int __user *u_msg_prio,
761 const struct old_timespec32 __user *u_abs_timeout);
762asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes,
763 const char __user *u_msg_ptr,
764 unsigned int msg_len, unsigned int msg_prio,
765 const struct old_timespec32 __user *u_abs_timeout);
766
767/* ipc/msg.c */
768asmlinkage long sys_msgget(key_t key, int msgflg);
769asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
770asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
771asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
772 size_t msgsz, long msgtyp, int msgflg);
773asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
774 size_t msgsz, int msgflg);
775
776/* ipc/sem.c */
777asmlinkage long sys_semget(key_t key, int nsems, int semflg);
778asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
779asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
780asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
781 unsigned nsops,
782 const struct __kernel_timespec __user *timeout);
783asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops,
784 unsigned nsops,
785 const struct old_timespec32 __user *timeout);
786asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
787 unsigned nsops);
788
789/* ipc/shm.c */
790asmlinkage long sys_shmget(key_t key, size_t size, int flag);
791asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
792asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
793asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
794asmlinkage long sys_shmdt(char __user *shmaddr);
795
796/* net/socket.c */
797asmlinkage long sys_socket(int, int, int);
798asmlinkage long sys_socketpair(int, int, int, int __user *);
799asmlinkage long sys_bind(int, struct sockaddr __user *, int);
800asmlinkage long sys_listen(int, int);
801asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
802asmlinkage long sys_connect(int, struct sockaddr __user *, int);
803asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
804asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
805asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
806 struct sockaddr __user *, int);
807asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
808 struct sockaddr __user *, int __user *);
809asmlinkage long sys_setsockopt(int fd, int level, int optname,
810 char __user *optval, int optlen);
811asmlinkage long sys_getsockopt(int fd, int level, int optname,
812 char __user *optval, int __user *optlen);
813asmlinkage long sys_shutdown(int, int);
814asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
815asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
816
817/* mm/filemap.c */
818asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
819
820/* mm/nommu.c, also with MMU */
821asmlinkage long sys_brk(unsigned long brk);
822asmlinkage long sys_munmap(unsigned long addr, size_t len);
823asmlinkage long sys_mremap(unsigned long addr,
824 unsigned long old_len, unsigned long new_len,
825 unsigned long flags, unsigned long new_addr);
826
827/* security/keys/keyctl.c */
828asmlinkage long sys_add_key(const char __user *_type,
829 const char __user *_description,
830 const void __user *_payload,
831 size_t plen,
832 key_serial_t destringid);
833asmlinkage long sys_request_key(const char __user *_type,
834 const char __user *_description,
835 const char __user *_callout_info,
836 key_serial_t destringid);
837asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
838 unsigned long arg4, unsigned long arg5);
839
840/* arch/example/kernel/sys_example.c */
841#ifdef CONFIG_CLONE_BACKWARDS
842asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
843 int __user *);
844#else
845#ifdef CONFIG_CLONE_BACKWARDS3
846asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
847 int __user *, unsigned long);
848#else
849asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
850 int __user *, unsigned long);
851#endif
852#endif
853asmlinkage long sys_execve(const char __user *filename,
854 const char __user *const __user *argv,
855 const char __user *const __user *envp);
856
857/* mm/fadvise.c */
858asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
859
860/* mm/, CONFIG_MMU only */
861asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
862asmlinkage long sys_swapoff(const char __user *specialfile);
863asmlinkage long sys_mprotect(unsigned long start, size_t len,
864 unsigned long prot);
865asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
866asmlinkage long sys_mlock(unsigned long start, size_t len);
867asmlinkage long sys_munlock(unsigned long start, size_t len);
868asmlinkage long sys_mlockall(int flags);
869asmlinkage long sys_munlockall(void);
870asmlinkage long sys_mincore(unsigned long start, size_t len,
871 unsigned char __user * vec);
872asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
873asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
874 unsigned long prot, unsigned long pgoff,
875 unsigned long flags);
876asmlinkage long sys_mbind(unsigned long start, unsigned long len,
877 unsigned long mode,
878 const unsigned long __user *nmask,
879 unsigned long maxnode,
880 unsigned flags);
881asmlinkage long sys_get_mempolicy(int __user *policy,
882 unsigned long __user *nmask,
883 unsigned long maxnode,
884 unsigned long addr, unsigned long flags);
885asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
886 unsigned long maxnode);
887asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
888 const unsigned long __user *from,
889 const unsigned long __user *to);
890asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
891 const void __user * __user *pages,
892 const int __user *nodes,
893 int __user *status,
894 int flags);
895
896asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
897 siginfo_t __user *uinfo);
898asmlinkage long sys_perf_event_open(
899 struct perf_event_attr __user *attr_uptr,
900 pid_t pid, int cpu, int group_fd, unsigned long flags);
901asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
902asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
903 unsigned int vlen, unsigned flags,
904 struct __kernel_timespec __user *timeout);
905asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
906 unsigned int vlen, unsigned flags,
907 struct old_timespec32 __user *timeout);
908
909asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
910 int options, struct rusage __user *ru);
911asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
912 const struct rlimit64 __user *new_rlim,
913 struct rlimit64 __user *old_rlim);
914asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
915asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
916 u64 mask, int fd,
917 const char __user *pathname);
918asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
919 struct file_handle __user *handle,
920 int __user *mnt_id, int flag);
921asmlinkage long sys_open_by_handle_at(int mountdirfd,
922 struct file_handle __user *handle,
923 int flags);
924asmlinkage long sys_clock_adjtime(clockid_t which_clock,
925 struct __kernel_timex __user *tx);
926asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
927 struct old_timex32 __user *tx);
928asmlinkage long sys_syncfs(int fd);
929asmlinkage long sys_setns(int fd, int nstype);
930asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
931 unsigned int vlen, unsigned flags);
932asmlinkage long sys_process_vm_readv(pid_t pid,
933 const struct iovec __user *lvec,
934 unsigned long liovcnt,
935 const struct iovec __user *rvec,
936 unsigned long riovcnt,
937 unsigned long flags);
938asmlinkage long sys_process_vm_writev(pid_t pid,
939 const struct iovec __user *lvec,
940 unsigned long liovcnt,
941 const struct iovec __user *rvec,
942 unsigned long riovcnt,
943 unsigned long flags);
944asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
945 unsigned long idx1, unsigned long idx2);
946asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
947asmlinkage long sys_sched_setattr(pid_t pid,
948 struct sched_attr __user *attr,
949 unsigned int flags);
950asmlinkage long sys_sched_getattr(pid_t pid,
951 struct sched_attr __user *attr,
952 unsigned int size,
953 unsigned int flags);
954asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
955 int newdfd, const char __user *newname,
956 unsigned int flags);
957asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
958 void __user *uargs);
959asmlinkage long sys_getrandom(char __user *buf, size_t count,
960 unsigned int flags);
961asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
962asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
963asmlinkage long sys_execveat(int dfd, const char __user *filename,
964 const char __user *const __user *argv,
965 const char __user *const __user *envp, int flags);
966asmlinkage long sys_userfaultfd(int flags);
967asmlinkage long sys_membarrier(int cmd, int flags);
968asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
969asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
970 int fd_out, loff_t __user *off_out,
971 size_t len, unsigned int flags);
972asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
973 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
974 rwf_t flags);
975asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
976 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
977 rwf_t flags);
978asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
979 unsigned long prot, int pkey);
980asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
981asmlinkage long sys_pkey_free(int pkey);
982asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
983 unsigned mask, struct statx __user *buffer);
984asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
985 int flags, uint32_t sig);
986asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags);
987asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path,
988 int to_dfd, const char __user *to_path,
989 unsigned int ms_flags);
990asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags);
991asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key,
992 const void __user *value, int aux);
993asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags);
994asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags);
995asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
996 siginfo_t __user *info,
997 unsigned int flags);
998
999/*
1000 * Architecture-specific system calls
1001 */
1002
1003/* arch/x86/kernel/ioport.c */
1004asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
1005
1006/* pciconfig: alpha, arm, arm64, ia64, sparc */
1007asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
1008 unsigned long off, unsigned long len,
1009 void __user *buf);
1010asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
1011 unsigned long off, unsigned long len,
1012 void __user *buf);
1013asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
1014
1015/* powerpc */
1016asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
1017 __u32 __user *ustatus);
1018asmlinkage long sys_spu_create(const char __user *name,
1019 unsigned int flags, umode_t mode, int fd);
1020
1021
1022/*
1023 * Deprecated system calls which are still defined in
1024 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
1025 */
1026
1027/* __ARCH_WANT_SYSCALL_NO_AT */
1028asmlinkage long sys_open(const char __user *filename,
1029 int flags, umode_t mode);
1030asmlinkage long sys_link(const char __user *oldname,
1031 const char __user *newname);
1032asmlinkage long sys_unlink(const char __user *pathname);
1033asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
1034 unsigned dev);
1035asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
1036asmlinkage long sys_chown(const char __user *filename,
1037 uid_t user, gid_t group);
1038asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
1039asmlinkage long sys_rmdir(const char __user *pathname);
1040asmlinkage long sys_lchown(const char __user *filename,
1041 uid_t user, gid_t group);
1042asmlinkage long sys_access(const char __user *filename, int mode);
1043asmlinkage long sys_rename(const char __user *oldname,
1044 const char __user *newname);
1045asmlinkage long sys_symlink(const char __user *old, const char __user *new);
1046#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
1047asmlinkage long sys_stat64(const char __user *filename,
1048 struct stat64 __user *statbuf);
1049asmlinkage long sys_lstat64(const char __user *filename,
1050 struct stat64 __user *statbuf);
1051#endif
1052
1053/* __ARCH_WANT_SYSCALL_NO_FLAGS */
1054asmlinkage long sys_pipe(int __user *fildes);
1055asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
1056asmlinkage long sys_epoll_create(int size);
1057asmlinkage long sys_inotify_init(void);
1058asmlinkage long sys_eventfd(unsigned int count);
1059asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
1060
1061/* __ARCH_WANT_SYSCALL_OFF_T */
1062asmlinkage long sys_sendfile(int out_fd, int in_fd,
1063 off_t __user *offset, size_t count);
1064asmlinkage long sys_newstat(const char __user *filename,
1065 struct stat __user *statbuf);
1066asmlinkage long sys_newlstat(const char __user *filename,
1067 struct stat __user *statbuf);
1068asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
1069
1070/* __ARCH_WANT_SYSCALL_DEPRECATED */
1071asmlinkage long sys_alarm(unsigned int seconds);
1072asmlinkage long sys_getpgrp(void);
1073asmlinkage long sys_pause(void);
1074asmlinkage long sys_time(time_t __user *tloc);
1075asmlinkage long sys_time32(old_time32_t __user *tloc);
1076#ifdef __ARCH_WANT_SYS_UTIME
1077asmlinkage long sys_utime(char __user *filename,
1078 struct utimbuf __user *times);
1079asmlinkage long sys_utimes(char __user *filename,
1080 struct timeval __user *utimes);
1081asmlinkage long sys_futimesat(int dfd, const char __user *filename,
1082 struct timeval __user *utimes);
1083#endif
1084asmlinkage long sys_futimesat_time32(unsigned int dfd,
1085 const char __user *filename,
1086 struct old_timeval32 __user *t);
1087asmlinkage long sys_utime32(const char __user *filename,
1088 struct old_utimbuf32 __user *t);
1089asmlinkage long sys_utimes_time32(const char __user *filename,
1090 struct old_timeval32 __user *t);
1091asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
1092asmlinkage long sys_getdents(unsigned int fd,
1093 struct linux_dirent __user *dirent,
1094 unsigned int count);
1095asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
1096 fd_set __user *exp, struct timeval __user *tvp);
1097asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
1098 int timeout);
1099asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1100 int maxevents, int timeout);
1101asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1102asmlinkage long sys_vfork(void);
1103asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1104asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1105asmlinkage long sys_bdflush(int func, long data);
1106asmlinkage long sys_oldumount(char __user *name);
1107asmlinkage long sys_uselib(const char __user *library);
1108asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
1109asmlinkage long sys_sysfs(int option,
1110 unsigned long arg1, unsigned long arg2);
1111asmlinkage long sys_fork(void);
1112
1113/* obsolete: kernel/time/time.c */
1114asmlinkage long sys_stime(time_t __user *tptr);
1115asmlinkage long sys_stime32(old_time32_t __user *tptr);
1116
1117/* obsolete: kernel/signal.c */
1118asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1119asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1120 old_sigset_t __user *oset);
1121#ifdef CONFIG_OLD_SIGSUSPEND
1122asmlinkage long sys_sigsuspend(old_sigset_t mask);
1123#endif
1124
1125#ifdef CONFIG_OLD_SIGSUSPEND3
1126asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1127#endif
1128
1129#ifdef CONFIG_OLD_SIGACTION
1130asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1131 struct old_sigaction __user *);
1132#endif
1133asmlinkage long sys_sgetmask(void);
1134asmlinkage long sys_ssetmask(int newmask);
1135asmlinkage long sys_signal(int sig, __sighandler_t handler);
1136
1137/* obsolete: kernel/sched/core.c */
1138asmlinkage long sys_nice(int increment);
1139
1140/* obsolete: kernel/kexec_file.c */
1141asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1142 unsigned long cmdline_len,
1143 const char __user *cmdline_ptr,
1144 unsigned long flags);
1145
1146/* obsolete: kernel/exit.c */
1147asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1148
1149/* obsolete: kernel/uid16.c */
1150#ifdef CONFIG_HAVE_UID16
1151asmlinkage long sys_chown16(const char __user *filename,
1152 old_uid_t user, old_gid_t group);
1153asmlinkage long sys_lchown16(const char __user *filename,
1154 old_uid_t user, old_gid_t group);
1155asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1156asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1157asmlinkage long sys_setgid16(old_gid_t gid);
1158asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1159asmlinkage long sys_setuid16(old_uid_t uid);
1160asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1161asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1162 old_uid_t __user *euid, old_uid_t __user *suid);
1163asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1164asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1165 old_gid_t __user *egid, old_gid_t __user *sgid);
1166asmlinkage long sys_setfsuid16(old_uid_t uid);
1167asmlinkage long sys_setfsgid16(old_gid_t gid);
1168asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1169asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1170asmlinkage long sys_getuid16(void);
1171asmlinkage long sys_geteuid16(void);
1172asmlinkage long sys_getgid16(void);
1173asmlinkage long sys_getegid16(void);
1174#endif
1175
1176/* obsolete: net/socket.c */
1177asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1178
1179/* obsolete: fs/stat.c */
1180asmlinkage long sys_stat(const char __user *filename,
1181 struct __old_kernel_stat __user *statbuf);
1182asmlinkage long sys_lstat(const char __user *filename,
1183 struct __old_kernel_stat __user *statbuf);
1184asmlinkage long sys_fstat(unsigned int fd,
1185 struct __old_kernel_stat __user *statbuf);
1186asmlinkage long sys_readlink(const char __user *path,
1187 char __user *buf, int bufsiz);
1188
1189/* obsolete: fs/select.c */
1190asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1191
1192/* obsolete: fs/readdir.c */
1193asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1194
1195/* obsolete: kernel/sys.c */
1196asmlinkage long sys_gethostname(char __user *name, int len);
1197asmlinkage long sys_uname(struct old_utsname __user *);
1198asmlinkage long sys_olduname(struct oldold_utsname __user *);
1199#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1200asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1201#endif
1202
1203/* obsolete: ipc */
1204asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1205 unsigned long third, void __user *ptr, long fifth);
1206
1207/* obsolete: mm/ */
1208asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1209 unsigned long prot, unsigned long flags,
1210 unsigned long fd, unsigned long pgoff);
1211asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1212
1213
1214/*
1215 * Not a real system call, but a placeholder for syscalls which are
1216 * not implemented -- see kernel/sys_ni.c
1217 */
1218asmlinkage long sys_ni_syscall(void);
1219
1220#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1221
1222
1223/*
1224 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1225 * Instead, use one of the functions which work equivalently, such as
1226 * the ksys_xyzyyz() functions prototyped below.
1227 */
1228
1229int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type,
1230 unsigned long flags, void __user *data);
1231int ksys_umount(char __user *name, int flags);
1232int ksys_dup(unsigned int fildes);
1233int ksys_chroot(const char __user *filename);
1234ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1235int ksys_chdir(const char __user *filename);
1236int ksys_fchmod(unsigned int fd, umode_t mode);
1237int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1238int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent,
1239 unsigned int count);
1240int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
1241off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence);
1242ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1243void ksys_sync(void);
1244int ksys_unshare(unsigned long unshare_flags);
1245int ksys_setsid(void);
1246int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1247 unsigned int flags);
1248ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1249 loff_t pos);
1250ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1251 size_t count, loff_t pos);
1252int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1253#ifdef CONFIG_ADVISE_SYSCALLS
1254int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1255#else
1256static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1257 int advice)
1258{
1259 return -EINVAL;
1260}
1261#endif
1262unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1263 unsigned long prot, unsigned long flags,
1264 unsigned long fd, unsigned long pgoff);
1265ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1266int ksys_ipc(unsigned int call, int first, unsigned long second,
1267 unsigned long third, void __user * ptr, long fifth);
1268int compat_ksys_ipc(u32 call, int first, int second,
1269 u32 third, u32 ptr, u32 fifth);
1270
1271/*
1272 * The following kernel syscall equivalents are just wrappers to fs-internal
1273 * functions. Therefore, provide stubs to be inlined at the callsites.
1274 */
1275extern long do_unlinkat(int dfd, struct filename *name);
1276
1277static inline long ksys_unlink(const char __user *pathname)
1278{
1279 return do_unlinkat(AT_FDCWD, getname(pathname));
1280}
1281
1282extern long do_rmdir(int dfd, const char __user *pathname);
1283
1284static inline long ksys_rmdir(const char __user *pathname)
1285{
1286 return do_rmdir(AT_FDCWD, pathname);
1287}
1288
1289extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
1290
1291static inline long ksys_mkdir(const char __user *pathname, umode_t mode)
1292{
1293 return do_mkdirat(AT_FDCWD, pathname, mode);
1294}
1295
1296extern long do_symlinkat(const char __user *oldname, int newdfd,
1297 const char __user *newname);
1298
1299static inline long ksys_symlink(const char __user *oldname,
1300 const char __user *newname)
1301{
1302 return do_symlinkat(oldname, AT_FDCWD, newname);
1303}
1304
1305extern long do_mknodat(int dfd, const char __user *filename, umode_t mode,
1306 unsigned int dev);
1307
1308static inline long ksys_mknod(const char __user *filename, umode_t mode,
1309 unsigned int dev)
1310{
1311 return do_mknodat(AT_FDCWD, filename, mode, dev);
1312}
1313
1314extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
1315 const char __user *newname, int flags);
1316
1317static inline long ksys_link(const char __user *oldname,
1318 const char __user *newname)
1319{
1320 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
1321}
1322
1323extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
1324
1325static inline int ksys_chmod(const char __user *filename, umode_t mode)
1326{
1327 return do_fchmodat(AT_FDCWD, filename, mode);
1328}
1329
1330extern long do_faccessat(int dfd, const char __user *filename, int mode);
1331
1332static inline long ksys_access(const char __user *filename, int mode)
1333{
1334 return do_faccessat(AT_FDCWD, filename, mode);
1335}
1336
1337extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1338 gid_t group, int flag);
1339
1340static inline long ksys_chown(const char __user *filename, uid_t user,
1341 gid_t group)
1342{
1343 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1344}
1345
1346static inline long ksys_lchown(const char __user *filename, uid_t user,
1347 gid_t group)
1348{
1349 return do_fchownat(AT_FDCWD, filename, user, group,
1350 AT_SYMLINK_NOFOLLOW);
1351}
1352
1353extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1354
1355static inline long ksys_ftruncate(unsigned int fd, unsigned long length)
1356{
1357 return do_sys_ftruncate(fd, length, 1);
1358}
1359
1360extern int __close_fd(struct files_struct *files, unsigned int fd);
1361
1362/*
1363 * In contrast to sys_close(), this stub does not check whether the syscall
1364 * should or should not be restarted, but returns the raw error codes from
1365 * __close_fd().
1366 */
1367static inline int ksys_close(unsigned int fd)
1368{
1369 return __close_fd(current->files, fd);
1370}
1371
1372extern long do_sys_open(int dfd, const char __user *filename, int flags,
1373 umode_t mode);
1374
1375static inline long ksys_open(const char __user *filename, int flags,
1376 umode_t mode)
1377{
1378 if (force_o_largefile())
1379 flags |= O_LARGEFILE;
1380 return do_sys_open(AT_FDCWD, filename, flags, mode);
1381}
1382
1383extern long do_sys_truncate(const char __user *pathname, loff_t length);
1384
1385static inline long ksys_truncate(const char __user *pathname, loff_t length)
1386{
1387 return do_sys_truncate(pathname, length);
1388}
1389
1390static inline unsigned int ksys_personality(unsigned int personality)
1391{
1392 unsigned int old = current->personality;
1393
1394 if (personality != 0xffffffff)
1395 set_personality(personality);
1396
1397 return old;
1398}
1399
1400#endif