1/*
2 * syscalls.h - Linux syscall interfaces (non-arch-specific)
3 *
4 * Copyright (c) 2004 Randy Dunlap
5 * Copyright (c) 2004 Open Source Development Labs
6 *
7 * This file is released under the GPLv2.
8 * See the file COPYING for more details.
9 */
10
11#ifndef _LINUX_SYSCALLS_H
12#define _LINUX_SYSCALLS_H
13
14struct __aio_sigset;
15struct epoll_event;
16struct iattr;
17struct inode;
18struct iocb;
19struct io_event;
20struct iovec;
21struct itimerspec;
22struct itimerval;
23struct kexec_segment;
24struct linux_dirent;
25struct linux_dirent64;
26struct list_head;
27struct mmap_arg_struct;
28struct msgbuf;
29struct user_msghdr;
30struct mmsghdr;
31struct msqid_ds;
32struct new_utsname;
33struct nfsctl_arg;
34struct __old_kernel_stat;
35struct oldold_utsname;
36struct old_utsname;
37struct pollfd;
38struct rlimit;
39struct rlimit64;
40struct rusage;
41struct sched_param;
42struct sched_attr;
43struct sel_arg_struct;
44struct semaphore;
45struct sembuf;
46struct shmid_ds;
47struct sockaddr;
48struct stat;
49struct stat64;
50struct statfs;
51struct statfs64;
52struct statx;
53struct __sysctl_args;
54struct sysinfo;
55struct timespec;
56struct timeval;
57struct timex;
58struct timezone;
59struct tms;
60struct utimbuf;
61struct mq_attr;
62struct compat_stat;
63struct compat_timeval;
64struct robust_list_head;
65struct getcpu_cache;
66struct old_linux_dirent;
67struct perf_event_attr;
68struct file_handle;
69struct sigaltstack;
70struct rseq;
71union bpf_attr;
72
73#include <linux/types.h>
74#include <linux/aio_abi.h>
75#include <linux/capability.h>
76#include <linux/signal.h>
77#include <linux/list.h>
78#include <linux/bug.h>
79#include <linux/sem.h>
80#include <asm/siginfo.h>
81#include <linux/unistd.h>
82#include <linux/quota.h>
83#include <linux/key.h>
84#include <linux/personality.h>
85#include <trace/syscall.h>
86
87#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
88/*
89 * It may be useful for an architecture to override the definitions of the
90 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a
91 * different calling convention for syscalls. To allow for that, the prototypes
92 * for the sys_*() functions below will *not* be included if
93 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
94 */
95#include <asm/syscall_wrapper.h>
96#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
97
98/*
99 * __MAP - apply a macro to syscall arguments
100 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
101 * m(t1, a1), m(t2, a2), ..., m(tn, an)
102 * The first argument must be equal to the amount of type/name
103 * pairs given. Note that this list of pairs (i.e. the arguments
104 * of __MAP starting at the third one) is in the same format as
105 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
106 */
107#define __MAP0(m,...)
108#define __MAP1(m,t,a,...) m(t,a)
109#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
110#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
111#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
112#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
113#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
114#define __MAP(n,...) __MAP##n(__VA_ARGS__)
115
116#define __SC_DECL(t, a) t a
117#define __TYPE_AS(t, v) __same_type((__force t)0, v)
118#define __TYPE_IS_L(t) (__TYPE_AS(t, 0L))
119#define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL))
120#define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL))
121#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
122#define __SC_CAST(t, a) (__force t) a
123#define __SC_ARGS(t, a) a
124#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
125
126#ifdef CONFIG_FTRACE_SYSCALLS
127#define __SC_STR_ADECL(t, a) #a
128#define __SC_STR_TDECL(t, a) #t
129
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, current);
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 timespec __user *timeout);
300asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
301 long min_nr,
302 long nr,
303 struct io_event __user *events,
304 struct timespec __user *timeout,
305 const struct __aio_sigset *sig);
306
307/* fs/xattr.c */
308asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
309 const void __user *value, size_t size, int flags);
310asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
311 const void __user *value, size_t size, int flags);
312asmlinkage long sys_fsetxattr(int fd, const char __user *name,
313 const void __user *value, size_t size, int flags);
314asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
315 void __user *value, size_t size);
316asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
317 void __user *value, size_t size);
318asmlinkage long sys_fgetxattr(int fd, const char __user *name,
319 void __user *value, size_t size);
320asmlinkage long sys_listxattr(const char __user *path, char __user *list,
321 size_t size);
322asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
323 size_t size);
324asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
325asmlinkage long sys_removexattr(const char __user *path,
326 const char __user *name);
327asmlinkage long sys_lremovexattr(const char __user *path,
328 const char __user *name);
329asmlinkage long sys_fremovexattr(int fd, const char __user *name);
330
331/* fs/dcache.c */
332asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
333
334/* fs/cookies.c */
335asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
336
337/* fs/eventfd.c */
338asmlinkage long sys_eventfd2(unsigned int count, int flags);
339
340/* fs/eventpoll.c */
341asmlinkage long sys_epoll_create1(int flags);
342asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
343 struct epoll_event __user *event);
344asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
345 int maxevents, int timeout,
346 const sigset_t __user *sigmask,
347 size_t sigsetsize);
348
349/* fs/fcntl.c */
350asmlinkage long sys_dup(unsigned int fildes);
351asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
352asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
353#if BITS_PER_LONG == 32
354asmlinkage long sys_fcntl64(unsigned int fd,
355 unsigned int cmd, unsigned long arg);
356#endif
357
358/* fs/inotify_user.c */
359asmlinkage long sys_inotify_init1(int flags);
360asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
361 u32 mask);
362asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
363
364/* fs/ioctl.c */
365asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
366 unsigned long arg);
367
368/* fs/ioprio.c */
369asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
370asmlinkage long sys_ioprio_get(int which, int who);
371
372/* fs/locks.c */
373asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
374
375/* fs/namei.c */
376asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
377 unsigned dev);
378asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
379asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
380asmlinkage long sys_symlinkat(const char __user * oldname,
381 int newdfd, const char __user * newname);
382asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
383 int newdfd, const char __user *newname, int flags);
384asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
385 int newdfd, const char __user * newname);
386
387/* fs/namespace.c */
388asmlinkage long sys_umount(char __user *name, int flags);
389asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
390 char __user *type, unsigned long flags,
391 void __user *data);
392asmlinkage long sys_pivot_root(const char __user *new_root,
393 const char __user *put_old);
394
395/* fs/nfsctl.c */
396
397/* fs/open.c */
398asmlinkage long sys_statfs(const char __user * path,
399 struct statfs __user *buf);
400asmlinkage long sys_statfs64(const char __user *path, size_t sz,
401 struct statfs64 __user *buf);
402asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
403asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
404 struct statfs64 __user *buf);
405asmlinkage long sys_truncate(const char __user *path, long length);
406asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
407#if BITS_PER_LONG == 32
408asmlinkage long sys_truncate64(const char __user *path, loff_t length);
409asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
410#endif
411asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
412asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
413asmlinkage long sys_chdir(const char __user *filename);
414asmlinkage long sys_fchdir(unsigned int fd);
415asmlinkage long sys_chroot(const char __user *filename);
416asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
417asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
418 umode_t mode);
419asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
420 gid_t group, int flag);
421asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
422asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
423 umode_t mode);
424asmlinkage long sys_close(unsigned int fd);
425asmlinkage long sys_vhangup(void);
426
427/* fs/pipe.c */
428asmlinkage long sys_pipe2(int __user *fildes, int flags);
429
430/* fs/quota.c */
431asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
432 qid_t id, void __user *addr);
433
434/* fs/readdir.c */
435asmlinkage long sys_getdents64(unsigned int fd,
436 struct linux_dirent64 __user *dirent,
437 unsigned int count);
438
439/* fs/read_write.c */
440asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
441 unsigned long offset_low, loff_t __user *result,
442 unsigned int whence);
443asmlinkage long sys_lseek(unsigned int fd, off_t offset,
444 unsigned int whence);
445asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
446asmlinkage long sys_write(unsigned int fd, const char __user *buf,
447 size_t count);
448asmlinkage long sys_readv(unsigned long fd,
449 const struct iovec __user *vec,
450 unsigned long vlen);
451asmlinkage long sys_writev(unsigned long fd,
452 const struct iovec __user *vec,
453 unsigned long vlen);
454asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
455 size_t count, loff_t pos);
456asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
457 size_t count, loff_t pos);
458asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
459 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
460asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
461 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
462
463/* fs/sendfile.c */
464asmlinkage long sys_sendfile64(int out_fd, int in_fd,
465 loff_t __user *offset, size_t count);
466
467/* fs/select.c */
468asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
469 fd_set __user *, struct timespec __user *,
470 void __user *);
471asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
472 struct timespec __user *, const sigset_t __user *,
473 size_t);
474
475/* fs/signalfd.c */
476asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
477
478/* fs/splice.c */
479asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
480 unsigned long nr_segs, unsigned int flags);
481asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
482 int fd_out, loff_t __user *off_out,
483 size_t len, unsigned int flags);
484asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
485
486/* fs/stat.c */
487asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
488 int bufsiz);
489asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
490 struct stat __user *statbuf, int flag);
491asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
492#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
493asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
494asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
495 struct stat64 __user *statbuf, int flag);
496#endif
497
498/* fs/sync.c */
499asmlinkage long sys_sync(void);
500asmlinkage long sys_fsync(unsigned int fd);
501asmlinkage long sys_fdatasync(unsigned int fd);
502asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
503 loff_t offset, loff_t nbytes);
504asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
505 unsigned int flags);
506
507/* fs/timerfd.c */
508asmlinkage long sys_timerfd_create(int clockid, int flags);
509asmlinkage long sys_timerfd_settime(int ufd, int flags,
510 const struct __kernel_itimerspec __user *utmr,
511 struct __kernel_itimerspec __user *otmr);
512asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
513
514/* fs/utimes.c */
515asmlinkage long sys_utimensat(int dfd, const char __user *filename,
516 struct timespec __user *utimes, int flags);
517
518/* kernel/acct.c */
519asmlinkage long sys_acct(const char __user *name);
520
521/* kernel/capability.c */
522asmlinkage long sys_capget(cap_user_header_t header,
523 cap_user_data_t dataptr);
524asmlinkage long sys_capset(cap_user_header_t header,
525 const cap_user_data_t data);
526
527/* kernel/exec_domain.c */
528asmlinkage long sys_personality(unsigned int personality);
529
530/* kernel/exit.c */
531asmlinkage long sys_exit(int error_code);
532asmlinkage long sys_exit_group(int error_code);
533asmlinkage long sys_waitid(int which, pid_t pid,
534 struct siginfo __user *infop,
535 int options, struct rusage __user *ru);
536
537/* kernel/fork.c */
538asmlinkage long sys_set_tid_address(int __user *tidptr);
539asmlinkage long sys_unshare(unsigned long unshare_flags);
540
541/* kernel/futex.c */
542asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
543 struct timespec __user *utime, u32 __user *uaddr2,
544 u32 val3);
545asmlinkage long sys_get_robust_list(int pid,
546 struct robust_list_head __user * __user *head_ptr,
547 size_t __user *len_ptr);
548asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
549 size_t len);
550
551/* kernel/hrtimer.c */
552asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
553 struct __kernel_timespec __user *rmtp);
554
555/* kernel/itimer.c */
556asmlinkage long sys_getitimer(int which, struct itimerval __user *value);
557asmlinkage long sys_setitimer(int which,
558 struct itimerval __user *value,
559 struct itimerval __user *ovalue);
560
561/* kernel/kexec.c */
562asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
563 struct kexec_segment __user *segments,
564 unsigned long flags);
565
566/* kernel/module.c */
567asmlinkage long sys_init_module(void __user *umod, unsigned long len,
568 const char __user *uargs);
569asmlinkage long sys_delete_module(const char __user *name_user,
570 unsigned int flags);
571
572/* kernel/posix-timers.c */
573asmlinkage long sys_timer_create(clockid_t which_clock,
574 struct sigevent __user *timer_event_spec,
575 timer_t __user * created_timer_id);
576asmlinkage long sys_timer_gettime(timer_t timer_id,
577 struct __kernel_itimerspec __user *setting);
578asmlinkage long sys_timer_getoverrun(timer_t timer_id);
579asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
580 const struct __kernel_itimerspec __user *new_setting,
581 struct itimerspec __user *old_setting);
582asmlinkage long sys_timer_delete(timer_t timer_id);
583asmlinkage long sys_clock_settime(clockid_t which_clock,
584 const struct __kernel_timespec __user *tp);
585asmlinkage long sys_clock_gettime(clockid_t which_clock,
586 struct __kernel_timespec __user *tp);
587asmlinkage long sys_clock_getres(clockid_t which_clock,
588 struct __kernel_timespec __user *tp);
589asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
590 const struct __kernel_timespec __user *rqtp,
591 struct __kernel_timespec __user *rmtp);
592
593/* kernel/printk.c */
594asmlinkage long sys_syslog(int type, char __user *buf, int len);
595
596/* kernel/ptrace.c */
597asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
598 unsigned long data);
599/* kernel/sched/core.c */
600
601asmlinkage long sys_sched_setparam(pid_t pid,
602 struct sched_param __user *param);
603asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
604 struct sched_param __user *param);
605asmlinkage long sys_sched_getscheduler(pid_t pid);
606asmlinkage long sys_sched_getparam(pid_t pid,
607 struct sched_param __user *param);
608asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
609 unsigned long __user *user_mask_ptr);
610asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
611 unsigned long __user *user_mask_ptr);
612asmlinkage long sys_sched_yield(void);
613asmlinkage long sys_sched_get_priority_max(int policy);
614asmlinkage long sys_sched_get_priority_min(int policy);
615asmlinkage long sys_sched_rr_get_interval(pid_t pid,
616 struct timespec __user *interval);
617
618/* kernel/signal.c */
619asmlinkage long sys_restart_syscall(void);
620asmlinkage long sys_kill(pid_t pid, int sig);
621asmlinkage long sys_tkill(pid_t pid, int sig);
622asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
623asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
624 struct sigaltstack __user *uoss);
625asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
626#ifndef CONFIG_ODD_RT_SIGACTION
627asmlinkage long sys_rt_sigaction(int,
628 const struct sigaction __user *,
629 struct sigaction __user *,
630 size_t);
631#endif
632asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
633 sigset_t __user *oset, size_t sigsetsize);
634asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
635asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
636 siginfo_t __user *uinfo,
637 const struct timespec __user *uts,
638 size_t sigsetsize);
639asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
640
641/* kernel/sys.c */
642asmlinkage long sys_setpriority(int which, int who, int niceval);
643asmlinkage long sys_getpriority(int which, int who);
644asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
645 void __user *arg);
646asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
647asmlinkage long sys_setgid(gid_t gid);
648asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
649asmlinkage long sys_setuid(uid_t uid);
650asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
651asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
652asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
653asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
654asmlinkage long sys_setfsuid(uid_t uid);
655asmlinkage long sys_setfsgid(gid_t gid);
656asmlinkage long sys_times(struct tms __user *tbuf);
657asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
658asmlinkage long sys_getpgid(pid_t pid);
659asmlinkage long sys_getsid(pid_t pid);
660asmlinkage long sys_setsid(void);
661asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
662asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
663asmlinkage long sys_newuname(struct new_utsname __user *name);
664asmlinkage long sys_sethostname(char __user *name, int len);
665asmlinkage long sys_setdomainname(char __user *name, int len);
666asmlinkage long sys_getrlimit(unsigned int resource,
667 struct rlimit __user *rlim);
668asmlinkage long sys_setrlimit(unsigned int resource,
669 struct rlimit __user *rlim);
670asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
671asmlinkage long sys_umask(int mask);
672asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
673 unsigned long arg4, unsigned long arg5);
674asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
675
676/* kernel/time.c */
677asmlinkage long sys_gettimeofday(struct timeval __user *tv,
678 struct timezone __user *tz);
679asmlinkage long sys_settimeofday(struct timeval __user *tv,
680 struct timezone __user *tz);
681asmlinkage long sys_adjtimex(struct timex __user *txc_p);
682
683/* kernel/timer.c */
684asmlinkage long sys_getpid(void);
685asmlinkage long sys_getppid(void);
686asmlinkage long sys_getuid(void);
687asmlinkage long sys_geteuid(void);
688asmlinkage long sys_getgid(void);
689asmlinkage long sys_getegid(void);
690asmlinkage long sys_gettid(void);
691asmlinkage long sys_sysinfo(struct sysinfo __user *info);
692
693/* ipc/mqueue.c */
694asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
695asmlinkage long sys_mq_unlink(const char __user *name);
696asmlinkage 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);
697asmlinkage 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);
698asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
699asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
700
701/* ipc/msg.c */
702asmlinkage long sys_msgget(key_t key, int msgflg);
703asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
704asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
705 size_t msgsz, long msgtyp, int msgflg);
706asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
707 size_t msgsz, int msgflg);
708
709/* ipc/sem.c */
710asmlinkage long sys_semget(key_t key, int nsems, int semflg);
711asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
712asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
713 unsigned nsops,
714 const struct __kernel_timespec __user *timeout);
715asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
716 unsigned nsops);
717
718/* ipc/shm.c */
719asmlinkage long sys_shmget(key_t key, size_t size, int flag);
720asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
721asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
722asmlinkage long sys_shmdt(char __user *shmaddr);
723
724/* net/socket.c */
725asmlinkage long sys_socket(int, int, int);
726asmlinkage long sys_socketpair(int, int, int, int __user *);
727asmlinkage long sys_bind(int, struct sockaddr __user *, int);
728asmlinkage long sys_listen(int, int);
729asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
730asmlinkage long sys_connect(int, struct sockaddr __user *, int);
731asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
732asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
733asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
734 struct sockaddr __user *, int);
735asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
736 struct sockaddr __user *, int __user *);
737asmlinkage long sys_setsockopt(int fd, int level, int optname,
738 char __user *optval, int optlen);
739asmlinkage long sys_getsockopt(int fd, int level, int optname,
740 char __user *optval, int __user *optlen);
741asmlinkage long sys_shutdown(int, int);
742asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
743asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
744
745/* mm/filemap.c */
746asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
747
748/* mm/nommu.c, also with MMU */
749asmlinkage long sys_brk(unsigned long brk);
750asmlinkage long sys_munmap(unsigned long addr, size_t len);
751asmlinkage long sys_mremap(unsigned long addr,
752 unsigned long old_len, unsigned long new_len,
753 unsigned long flags, unsigned long new_addr);
754
755/* security/keys/keyctl.c */
756asmlinkage long sys_add_key(const char __user *_type,
757 const char __user *_description,
758 const void __user *_payload,
759 size_t plen,
760 key_serial_t destringid);
761asmlinkage long sys_request_key(const char __user *_type,
762 const char __user *_description,
763 const char __user *_callout_info,
764 key_serial_t destringid);
765asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
766 unsigned long arg4, unsigned long arg5);
767
768/* arch/example/kernel/sys_example.c */
769#ifdef CONFIG_CLONE_BACKWARDS
770asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
771 int __user *);
772#else
773#ifdef CONFIG_CLONE_BACKWARDS3
774asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
775 int __user *, unsigned long);
776#else
777asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
778 int __user *, unsigned long);
779#endif
780#endif
781asmlinkage long sys_execve(const char __user *filename,
782 const char __user *const __user *argv,
783 const char __user *const __user *envp);
784
785/* mm/fadvise.c */
786asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
787
788/* mm/, CONFIG_MMU only */
789asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
790asmlinkage long sys_swapoff(const char __user *specialfile);
791asmlinkage long sys_mprotect(unsigned long start, size_t len,
792 unsigned long prot);
793asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
794asmlinkage long sys_mlock(unsigned long start, size_t len);
795asmlinkage long sys_munlock(unsigned long start, size_t len);
796asmlinkage long sys_mlockall(int flags);
797asmlinkage long sys_munlockall(void);
798asmlinkage long sys_mincore(unsigned long start, size_t len,
799 unsigned char __user * vec);
800asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
801asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
802 unsigned long prot, unsigned long pgoff,
803 unsigned long flags);
804asmlinkage long sys_mbind(unsigned long start, unsigned long len,
805 unsigned long mode,
806 const unsigned long __user *nmask,
807 unsigned long maxnode,
808 unsigned flags);
809asmlinkage long sys_get_mempolicy(int __user *policy,
810 unsigned long __user *nmask,
811 unsigned long maxnode,
812 unsigned long addr, unsigned long flags);
813asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
814 unsigned long maxnode);
815asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
816 const unsigned long __user *from,
817 const unsigned long __user *to);
818asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
819 const void __user * __user *pages,
820 const int __user *nodes,
821 int __user *status,
822 int flags);
823
824asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
825 siginfo_t __user *uinfo);
826asmlinkage long sys_perf_event_open(
827 struct perf_event_attr __user *attr_uptr,
828 pid_t pid, int cpu, int group_fd, unsigned long flags);
829asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
830asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
831 unsigned int vlen, unsigned flags,
832 struct timespec __user *timeout);
833
834asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
835 int options, struct rusage __user *ru);
836asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
837 const struct rlimit64 __user *new_rlim,
838 struct rlimit64 __user *old_rlim);
839asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
840asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
841 u64 mask, int fd,
842 const char __user *pathname);
843asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
844 struct file_handle __user *handle,
845 int __user *mnt_id, int flag);
846asmlinkage long sys_open_by_handle_at(int mountdirfd,
847 struct file_handle __user *handle,
848 int flags);
849asmlinkage long sys_clock_adjtime(clockid_t which_clock,
850 struct timex __user *tx);
851asmlinkage long sys_syncfs(int fd);
852asmlinkage long sys_setns(int fd, int nstype);
853asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
854 unsigned int vlen, unsigned flags);
855asmlinkage long sys_process_vm_readv(pid_t pid,
856 const struct iovec __user *lvec,
857 unsigned long liovcnt,
858 const struct iovec __user *rvec,
859 unsigned long riovcnt,
860 unsigned long flags);
861asmlinkage long sys_process_vm_writev(pid_t pid,
862 const struct iovec __user *lvec,
863 unsigned long liovcnt,
864 const struct iovec __user *rvec,
865 unsigned long riovcnt,
866 unsigned long flags);
867asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
868 unsigned long idx1, unsigned long idx2);
869asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
870asmlinkage long sys_sched_setattr(pid_t pid,
871 struct sched_attr __user *attr,
872 unsigned int flags);
873asmlinkage long sys_sched_getattr(pid_t pid,
874 struct sched_attr __user *attr,
875 unsigned int size,
876 unsigned int flags);
877asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
878 int newdfd, const char __user *newname,
879 unsigned int flags);
880asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
881 const char __user *uargs);
882asmlinkage long sys_getrandom(char __user *buf, size_t count,
883 unsigned int flags);
884asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
885asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
886asmlinkage long sys_execveat(int dfd, const char __user *filename,
887 const char __user *const __user *argv,
888 const char __user *const __user *envp, int flags);
889asmlinkage long sys_userfaultfd(int flags);
890asmlinkage long sys_membarrier(int cmd, int flags);
891asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
892asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
893 int fd_out, loff_t __user *off_out,
894 size_t len, unsigned int flags);
895asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
896 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
897 rwf_t flags);
898asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
899 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
900 rwf_t flags);
901asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
902 unsigned long prot, int pkey);
903asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
904asmlinkage long sys_pkey_free(int pkey);
905asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
906 unsigned mask, struct statx __user *buffer);
907asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
908 int flags, uint32_t sig);
909
910/*
911 * Architecture-specific system calls
912 */
913
914/* arch/x86/kernel/ioport.c */
915asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
916
917/* pciconfig: alpha, arm, arm64, ia64, sparc */
918asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
919 unsigned long off, unsigned long len,
920 void __user *buf);
921asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
922 unsigned long off, unsigned long len,
923 void __user *buf);
924asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
925
926/* powerpc */
927asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
928 __u32 __user *ustatus);
929asmlinkage long sys_spu_create(const char __user *name,
930 unsigned int flags, umode_t mode, int fd);
931
932
933/*
934 * Deprecated system calls which are still defined in
935 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
936 */
937
938/* __ARCH_WANT_SYSCALL_NO_AT */
939asmlinkage long sys_open(const char __user *filename,
940 int flags, umode_t mode);
941asmlinkage long sys_link(const char __user *oldname,
942 const char __user *newname);
943asmlinkage long sys_unlink(const char __user *pathname);
944asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
945 unsigned dev);
946asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
947asmlinkage long sys_chown(const char __user *filename,
948 uid_t user, gid_t group);
949asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
950asmlinkage long sys_rmdir(const char __user *pathname);
951asmlinkage long sys_lchown(const char __user *filename,
952 uid_t user, gid_t group);
953asmlinkage long sys_access(const char __user *filename, int mode);
954asmlinkage long sys_rename(const char __user *oldname,
955 const char __user *newname);
956asmlinkage long sys_symlink(const char __user *old, const char __user *new);
957asmlinkage long sys_utimes(char __user *filename,
958 struct timeval __user *utimes);
959#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
960asmlinkage long sys_stat64(const char __user *filename,
961 struct stat64 __user *statbuf);
962asmlinkage long sys_lstat64(const char __user *filename,
963 struct stat64 __user *statbuf);
964#endif
965
966/* __ARCH_WANT_SYSCALL_NO_FLAGS */
967asmlinkage long sys_pipe(int __user *fildes);
968asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
969asmlinkage long sys_epoll_create(int size);
970asmlinkage long sys_inotify_init(void);
971asmlinkage long sys_eventfd(unsigned int count);
972asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
973
974/* __ARCH_WANT_SYSCALL_OFF_T */
975asmlinkage long sys_sendfile(int out_fd, int in_fd,
976 off_t __user *offset, size_t count);
977asmlinkage long sys_newstat(const char __user *filename,
978 struct stat __user *statbuf);
979asmlinkage long sys_newlstat(const char __user *filename,
980 struct stat __user *statbuf);
981asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
982
983/* __ARCH_WANT_SYSCALL_DEPRECATED */
984asmlinkage long sys_alarm(unsigned int seconds);
985asmlinkage long sys_getpgrp(void);
986asmlinkage long sys_pause(void);
987asmlinkage long sys_time(time_t __user *tloc);
988asmlinkage long sys_utime(char __user *filename,
989 struct utimbuf __user *times);
990asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
991asmlinkage long sys_getdents(unsigned int fd,
992 struct linux_dirent __user *dirent,
993 unsigned int count);
994asmlinkage long sys_futimesat(int dfd, const char __user *filename,
995 struct timeval __user *utimes);
996asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
997 fd_set __user *exp, struct timeval __user *tvp);
998asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
999 int timeout);
1000asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1001 int maxevents, int timeout);
1002asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1003asmlinkage long sys_vfork(void);
1004asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1005asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1006asmlinkage long sys_bdflush(int func, long data);
1007asmlinkage long sys_oldumount(char __user *name);
1008asmlinkage long sys_uselib(const char __user *library);
1009asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
1010asmlinkage long sys_sysfs(int option,
1011 unsigned long arg1, unsigned long arg2);
1012asmlinkage long sys_fork(void);
1013
1014/* obsolete: kernel/time/time.c */
1015asmlinkage long sys_stime(time_t __user *tptr);
1016
1017/* obsolete: kernel/signal.c */
1018asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1019asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1020 old_sigset_t __user *oset);
1021#ifdef CONFIG_OLD_SIGSUSPEND
1022asmlinkage long sys_sigsuspend(old_sigset_t mask);
1023#endif
1024
1025#ifdef CONFIG_OLD_SIGSUSPEND3
1026asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1027#endif
1028
1029#ifdef CONFIG_OLD_SIGACTION
1030asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1031 struct old_sigaction __user *);
1032#endif
1033asmlinkage long sys_sgetmask(void);
1034asmlinkage long sys_ssetmask(int newmask);
1035asmlinkage long sys_signal(int sig, __sighandler_t handler);
1036
1037/* obsolete: kernel/sched/core.c */
1038asmlinkage long sys_nice(int increment);
1039
1040/* obsolete: kernel/kexec_file.c */
1041asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1042 unsigned long cmdline_len,
1043 const char __user *cmdline_ptr,
1044 unsigned long flags);
1045
1046/* obsolete: kernel/exit.c */
1047asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1048
1049/* obsolete: kernel/uid16.c */
1050#ifdef CONFIG_HAVE_UID16
1051asmlinkage long sys_chown16(const char __user *filename,
1052 old_uid_t user, old_gid_t group);
1053asmlinkage long sys_lchown16(const char __user *filename,
1054 old_uid_t user, old_gid_t group);
1055asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1056asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1057asmlinkage long sys_setgid16(old_gid_t gid);
1058asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1059asmlinkage long sys_setuid16(old_uid_t uid);
1060asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1061asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1062 old_uid_t __user *euid, old_uid_t __user *suid);
1063asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1064asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1065 old_gid_t __user *egid, old_gid_t __user *sgid);
1066asmlinkage long sys_setfsuid16(old_uid_t uid);
1067asmlinkage long sys_setfsgid16(old_gid_t gid);
1068asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1069asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1070asmlinkage long sys_getuid16(void);
1071asmlinkage long sys_geteuid16(void);
1072asmlinkage long sys_getgid16(void);
1073asmlinkage long sys_getegid16(void);
1074#endif
1075
1076/* obsolete: net/socket.c */
1077asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1078
1079/* obsolete: fs/stat.c */
1080asmlinkage long sys_stat(const char __user *filename,
1081 struct __old_kernel_stat __user *statbuf);
1082asmlinkage long sys_lstat(const char __user *filename,
1083 struct __old_kernel_stat __user *statbuf);
1084asmlinkage long sys_fstat(unsigned int fd,
1085 struct __old_kernel_stat __user *statbuf);
1086asmlinkage long sys_readlink(const char __user *path,
1087 char __user *buf, int bufsiz);
1088
1089/* obsolete: fs/select.c */
1090asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1091
1092/* obsolete: fs/readdir.c */
1093asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1094
1095/* obsolete: kernel/sys.c */
1096asmlinkage long sys_gethostname(char __user *name, int len);
1097asmlinkage long sys_uname(struct old_utsname __user *);
1098asmlinkage long sys_olduname(struct oldold_utsname __user *);
1099#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1100asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1101#endif
1102
1103/* obsolete: ipc */
1104asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1105 unsigned long third, void __user *ptr, long fifth);
1106
1107/* obsolete: mm/ */
1108asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1109 unsigned long prot, unsigned long flags,
1110 unsigned long fd, unsigned long pgoff);
1111asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1112
1113
1114/*
1115 * Not a real system call, but a placeholder for syscalls which are
1116 * not implemented -- see kernel/sys_ni.c
1117 */
1118asmlinkage long sys_ni_syscall(void);
1119
1120#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1121
1122
1123/*
1124 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1125 * Instead, use one of the functions which work equivalently, such as
1126 * the ksys_xyzyyz() functions prototyped below.
1127 */
1128
1129int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type,
1130 unsigned long flags, void __user *data);
1131int ksys_umount(char __user *name, int flags);
1132int ksys_dup(unsigned int fildes);
1133int ksys_chroot(const char __user *filename);
1134ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1135int ksys_chdir(const char __user *filename);
1136int ksys_fchmod(unsigned int fd, umode_t mode);
1137int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1138int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent,
1139 unsigned int count);
1140int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
1141off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence);
1142ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1143void ksys_sync(void);
1144int ksys_unshare(unsigned long unshare_flags);
1145int ksys_setsid(void);
1146int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1147 unsigned int flags);
1148ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1149 loff_t pos);
1150ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1151 size_t count, loff_t pos);
1152int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1153#ifdef CONFIG_ADVISE_SYSCALLS
1154int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1155#else
1156static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1157 int advice)
1158{
1159 return -EINVAL;
1160}
1161#endif
1162unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1163 unsigned long prot, unsigned long flags,
1164 unsigned long fd, unsigned long pgoff);
1165ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1166
1167/*
1168 * The following kernel syscall equivalents are just wrappers to fs-internal
1169 * functions. Therefore, provide stubs to be inlined at the callsites.
1170 */
1171extern long do_unlinkat(int dfd, struct filename *name);
1172
1173static inline long ksys_unlink(const char __user *pathname)
1174{
1175 return do_unlinkat(AT_FDCWD, getname(pathname));
1176}
1177
1178extern long do_rmdir(int dfd, const char __user *pathname);
1179
1180static inline long ksys_rmdir(const char __user *pathname)
1181{
1182 return do_rmdir(AT_FDCWD, pathname);
1183}
1184
1185extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
1186
1187static inline long ksys_mkdir(const char __user *pathname, umode_t mode)
1188{
1189 return do_mkdirat(AT_FDCWD, pathname, mode);
1190}
1191
1192extern long do_symlinkat(const char __user *oldname, int newdfd,
1193 const char __user *newname);
1194
1195static inline long ksys_symlink(const char __user *oldname,
1196 const char __user *newname)
1197{
1198 return do_symlinkat(oldname, AT_FDCWD, newname);
1199}
1200
1201extern long do_mknodat(int dfd, const char __user *filename, umode_t mode,
1202 unsigned int dev);
1203
1204static inline long ksys_mknod(const char __user *filename, umode_t mode,
1205 unsigned int dev)
1206{
1207 return do_mknodat(AT_FDCWD, filename, mode, dev);
1208}
1209
1210extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
1211 const char __user *newname, int flags);
1212
1213static inline long ksys_link(const char __user *oldname,
1214 const char __user *newname)
1215{
1216 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
1217}
1218
1219extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
1220
1221static inline int ksys_chmod(const char __user *filename, umode_t mode)
1222{
1223 return do_fchmodat(AT_FDCWD, filename, mode);
1224}
1225
1226extern long do_faccessat(int dfd, const char __user *filename, int mode);
1227
1228static inline long ksys_access(const char __user *filename, int mode)
1229{
1230 return do_faccessat(AT_FDCWD, filename, mode);
1231}
1232
1233extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1234 gid_t group, int flag);
1235
1236static inline long ksys_chown(const char __user *filename, uid_t user,
1237 gid_t group)
1238{
1239 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1240}
1241
1242static inline long ksys_lchown(const char __user *filename, uid_t user,
1243 gid_t group)
1244{
1245 return do_fchownat(AT_FDCWD, filename, user, group,
1246 AT_SYMLINK_NOFOLLOW);
1247}
1248
1249extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1250
1251static inline long ksys_ftruncate(unsigned int fd, unsigned long length)
1252{
1253 return do_sys_ftruncate(fd, length, 1);
1254}
1255
1256extern int __close_fd(struct files_struct *files, unsigned int fd);
1257
1258/*
1259 * In contrast to sys_close(), this stub does not check whether the syscall
1260 * should or should not be restarted, but returns the raw error codes from
1261 * __close_fd().
1262 */
1263static inline int ksys_close(unsigned int fd)
1264{
1265 return __close_fd(current->files, fd);
1266}
1267
1268extern long do_sys_open(int dfd, const char __user *filename, int flags,
1269 umode_t mode);
1270
1271static inline long ksys_open(const char __user *filename, int flags,
1272 umode_t mode)
1273{
1274 if (force_o_largefile())
1275 flags |= O_LARGEFILE;
1276 return do_sys_open(AT_FDCWD, filename, flags, mode);
1277}
1278
1279extern long do_sys_truncate(const char __user *pathname, loff_t length);
1280
1281static inline long ksys_truncate(const char __user *pathname, loff_t length)
1282{
1283 return do_sys_truncate(pathname, length);
1284}
1285
1286static inline unsigned int ksys_personality(unsigned int personality)
1287{
1288 unsigned int old = current->personality;
1289
1290 if (personality != 0xffffffff)
1291 set_personality(personality);
1292
1293 return old;
1294}
1295
1296#endif
1297