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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * syscalls.h - Linux syscall interfaces (non-arch-specific)
4 *
5 * Copyright (c) 2004 Randy Dunlap
6 * Copyright (c) 2004 Open Source Development Labs
7 */
8
9#ifndef _LINUX_SYSCALLS_H
10#define _LINUX_SYSCALLS_H
11
12struct __aio_sigset;
13struct epoll_event;
14struct iattr;
15struct inode;
16struct iocb;
17struct io_event;
18struct iovec;
19struct __kernel_old_itimerval;
20struct kexec_segment;
21struct linux_dirent;
22struct linux_dirent64;
23struct list_head;
24struct mmap_arg_struct;
25struct msgbuf;
26struct user_msghdr;
27struct mmsghdr;
28struct msqid_ds;
29struct new_utsname;
30struct nfsctl_arg;
31struct __old_kernel_stat;
32struct oldold_utsname;
33struct old_utsname;
34struct pollfd;
35struct rlimit;
36struct rlimit64;
37struct rusage;
38struct sched_param;
39struct sched_attr;
40struct sel_arg_struct;
41struct semaphore;
42struct sembuf;
43struct shmid_ds;
44struct sockaddr;
45struct stat;
46struct stat64;
47struct statfs;
48struct statfs64;
49struct statx;
50struct sysinfo;
51struct timespec;
52struct __kernel_old_timeval;
53struct __kernel_timex;
54struct timezone;
55struct tms;
56struct utimbuf;
57struct mq_attr;
58struct compat_stat;
59struct old_timeval32;
60struct robust_list_head;
61struct getcpu_cache;
62struct old_linux_dirent;
63struct perf_event_attr;
64struct file_handle;
65struct sigaltstack;
66struct rseq;
67union bpf_attr;
68struct io_uring_params;
69struct clone_args;
70struct open_how;
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 __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 __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 __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(uaccess_kernel(),
266 "Invalid address limit on user-mode return"))
267 force_sig(SIGKILL);
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 void __user *argp, size_t argsz);
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);
365asmlinkage long sys_epoll_pwait2(int epfd, struct epoll_event __user *events,
366 int maxevents,
367 const struct __kernel_timespec __user *timeout,
368 const sigset_t __user *sigmask,
369 size_t sigsetsize);
370
371/* fs/fcntl.c */
372asmlinkage long sys_dup(unsigned int fildes);
373asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
374asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
375#if BITS_PER_LONG == 32
376asmlinkage long sys_fcntl64(unsigned int fd,
377 unsigned int cmd, unsigned long arg);
378#endif
379
380/* fs/inotify_user.c */
381asmlinkage long sys_inotify_init1(int flags);
382asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
383 u32 mask);
384asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
385
386/* fs/ioctl.c */
387asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
388 unsigned long arg);
389
390/* fs/ioprio.c */
391asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
392asmlinkage long sys_ioprio_get(int which, int who);
393
394/* fs/locks.c */
395asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
396
397/* fs/namei.c */
398asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
399 unsigned dev);
400asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
401asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
402asmlinkage long sys_symlinkat(const char __user * oldname,
403 int newdfd, const char __user * newname);
404asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
405 int newdfd, const char __user *newname, int flags);
406asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
407 int newdfd, const char __user * newname);
408
409/* fs/namespace.c */
410asmlinkage long sys_umount(char __user *name, int flags);
411asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
412 char __user *type, unsigned long flags,
413 void __user *data);
414asmlinkage long sys_pivot_root(const char __user *new_root,
415 const char __user *put_old);
416
417/* fs/nfsctl.c */
418
419/* fs/open.c */
420asmlinkage long sys_statfs(const char __user * path,
421 struct statfs __user *buf);
422asmlinkage long sys_statfs64(const char __user *path, size_t sz,
423 struct statfs64 __user *buf);
424asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
425asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
426 struct statfs64 __user *buf);
427asmlinkage long sys_truncate(const char __user *path, long length);
428asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
429#if BITS_PER_LONG == 32
430asmlinkage long sys_truncate64(const char __user *path, loff_t length);
431asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
432#endif
433asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
434asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
435asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode,
436 int flags);
437asmlinkage long sys_chdir(const char __user *filename);
438asmlinkage long sys_fchdir(unsigned int fd);
439asmlinkage long sys_chroot(const char __user *filename);
440asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
441asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
442 umode_t mode);
443asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
444 gid_t group, int flag);
445asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
446asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
447 umode_t mode);
448asmlinkage long sys_openat2(int dfd, const char __user *filename,
449 struct open_how *how, size_t size);
450asmlinkage long sys_close(unsigned int fd);
451asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd,
452 unsigned int flags);
453asmlinkage long sys_vhangup(void);
454
455/* fs/pipe.c */
456asmlinkage long sys_pipe2(int __user *fildes, int flags);
457
458/* fs/quota.c */
459asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
460 qid_t id, void __user *addr);
461
462/* fs/readdir.c */
463asmlinkage long sys_getdents64(unsigned int fd,
464 struct linux_dirent64 __user *dirent,
465 unsigned int count);
466
467/* fs/read_write.c */
468asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
469 unsigned long offset_low, loff_t __user *result,
470 unsigned int whence);
471asmlinkage long sys_lseek(unsigned int fd, off_t offset,
472 unsigned int whence);
473asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
474asmlinkage long sys_write(unsigned int fd, const char __user *buf,
475 size_t count);
476asmlinkage long sys_readv(unsigned long fd,
477 const struct iovec __user *vec,
478 unsigned long vlen);
479asmlinkage long sys_writev(unsigned long fd,
480 const struct iovec __user *vec,
481 unsigned long vlen);
482asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
483 size_t count, loff_t pos);
484asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
485 size_t count, loff_t pos);
486asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
487 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
488asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
489 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
490
491/* fs/sendfile.c */
492asmlinkage long sys_sendfile64(int out_fd, int in_fd,
493 loff_t __user *offset, size_t count);
494
495/* fs/select.c */
496asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
497 fd_set __user *, struct __kernel_timespec __user *,
498 void __user *);
499asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
500 fd_set __user *, struct old_timespec32 __user *,
501 void __user *);
502asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
503 struct __kernel_timespec __user *, const sigset_t __user *,
504 size_t);
505asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
506 struct old_timespec32 __user *, const sigset_t __user *,
507 size_t);
508
509/* fs/signalfd.c */
510asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
511
512/* fs/splice.c */
513asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
514 unsigned long nr_segs, unsigned int flags);
515asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
516 int fd_out, loff_t __user *off_out,
517 size_t len, unsigned int flags);
518asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
519
520/* fs/stat.c */
521asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
522 int bufsiz);
523asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
524 struct stat __user *statbuf, int flag);
525asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
526#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
527asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
528asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
529 struct stat64 __user *statbuf, int flag);
530#endif
531
532/* fs/sync.c */
533asmlinkage long sys_sync(void);
534asmlinkage long sys_fsync(unsigned int fd);
535asmlinkage long sys_fdatasync(unsigned int fd);
536asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
537 loff_t offset, loff_t nbytes);
538asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
539 unsigned int flags);
540
541/* fs/timerfd.c */
542asmlinkage long sys_timerfd_create(int clockid, int flags);
543asmlinkage long sys_timerfd_settime(int ufd, int flags,
544 const struct __kernel_itimerspec __user *utmr,
545 struct __kernel_itimerspec __user *otmr);
546asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
547asmlinkage long sys_timerfd_gettime32(int ufd,
548 struct old_itimerspec32 __user *otmr);
549asmlinkage long sys_timerfd_settime32(int ufd, int flags,
550 const struct old_itimerspec32 __user *utmr,
551 struct old_itimerspec32 __user *otmr);
552
553/* fs/utimes.c */
554asmlinkage long sys_utimensat(int dfd, const char __user *filename,
555 struct __kernel_timespec __user *utimes,
556 int flags);
557asmlinkage long sys_utimensat_time32(unsigned int dfd,
558 const char __user *filename,
559 struct old_timespec32 __user *t, int flags);
560
561/* kernel/acct.c */
562asmlinkage long sys_acct(const char __user *name);
563
564/* kernel/capability.c */
565asmlinkage long sys_capget(cap_user_header_t header,
566 cap_user_data_t dataptr);
567asmlinkage long sys_capset(cap_user_header_t header,
568 const cap_user_data_t data);
569
570/* kernel/exec_domain.c */
571asmlinkage long sys_personality(unsigned int personality);
572
573/* kernel/exit.c */
574asmlinkage long sys_exit(int error_code);
575asmlinkage long sys_exit_group(int error_code);
576asmlinkage long sys_waitid(int which, pid_t pid,
577 struct siginfo __user *infop,
578 int options, struct rusage __user *ru);
579
580/* kernel/fork.c */
581asmlinkage long sys_set_tid_address(int __user *tidptr);
582asmlinkage long sys_unshare(unsigned long unshare_flags);
583
584/* kernel/futex.c */
585asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
586 struct __kernel_timespec __user *utime, u32 __user *uaddr2,
587 u32 val3);
588asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
589 struct old_timespec32 __user *utime, u32 __user *uaddr2,
590 u32 val3);
591asmlinkage long sys_get_robust_list(int pid,
592 struct robust_list_head __user * __user *head_ptr,
593 size_t __user *len_ptr);
594asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
595 size_t len);
596
597/* kernel/hrtimer.c */
598asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
599 struct __kernel_timespec __user *rmtp);
600asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp,
601 struct old_timespec32 __user *rmtp);
602
603/* kernel/itimer.c */
604asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value);
605asmlinkage long sys_setitimer(int which,
606 struct __kernel_old_itimerval __user *value,
607 struct __kernel_old_itimerval __user *ovalue);
608
609/* kernel/kexec.c */
610asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
611 struct kexec_segment __user *segments,
612 unsigned long flags);
613
614/* kernel/module.c */
615asmlinkage long sys_init_module(void __user *umod, unsigned long len,
616 const char __user *uargs);
617asmlinkage long sys_delete_module(const char __user *name_user,
618 unsigned int flags);
619
620/* kernel/posix-timers.c */
621asmlinkage long sys_timer_create(clockid_t which_clock,
622 struct sigevent __user *timer_event_spec,
623 timer_t __user * created_timer_id);
624asmlinkage long sys_timer_gettime(timer_t timer_id,
625 struct __kernel_itimerspec __user *setting);
626asmlinkage long sys_timer_getoverrun(timer_t timer_id);
627asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
628 const struct __kernel_itimerspec __user *new_setting,
629 struct __kernel_itimerspec __user *old_setting);
630asmlinkage long sys_timer_delete(timer_t timer_id);
631asmlinkage long sys_clock_settime(clockid_t which_clock,
632 const struct __kernel_timespec __user *tp);
633asmlinkage long sys_clock_gettime(clockid_t which_clock,
634 struct __kernel_timespec __user *tp);
635asmlinkage long sys_clock_getres(clockid_t which_clock,
636 struct __kernel_timespec __user *tp);
637asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
638 const struct __kernel_timespec __user *rqtp,
639 struct __kernel_timespec __user *rmtp);
640asmlinkage long sys_timer_gettime32(timer_t timer_id,
641 struct old_itimerspec32 __user *setting);
642asmlinkage long sys_timer_settime32(timer_t timer_id, int flags,
643 struct old_itimerspec32 __user *new,
644 struct old_itimerspec32 __user *old);
645asmlinkage long sys_clock_settime32(clockid_t which_clock,
646 struct old_timespec32 __user *tp);
647asmlinkage long sys_clock_gettime32(clockid_t which_clock,
648 struct old_timespec32 __user *tp);
649asmlinkage long sys_clock_getres_time32(clockid_t which_clock,
650 struct old_timespec32 __user *tp);
651asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags,
652 struct old_timespec32 __user *rqtp,
653 struct old_timespec32 __user *rmtp);
654
655/* kernel/printk.c */
656asmlinkage long sys_syslog(int type, char __user *buf, int len);
657
658/* kernel/ptrace.c */
659asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
660 unsigned long data);
661/* kernel/sched/core.c */
662
663asmlinkage long sys_sched_setparam(pid_t pid,
664 struct sched_param __user *param);
665asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
666 struct sched_param __user *param);
667asmlinkage long sys_sched_getscheduler(pid_t pid);
668asmlinkage long sys_sched_getparam(pid_t pid,
669 struct sched_param __user *param);
670asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
671 unsigned long __user *user_mask_ptr);
672asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
673 unsigned long __user *user_mask_ptr);
674asmlinkage long sys_sched_yield(void);
675asmlinkage long sys_sched_get_priority_max(int policy);
676asmlinkage long sys_sched_get_priority_min(int policy);
677asmlinkage long sys_sched_rr_get_interval(pid_t pid,
678 struct __kernel_timespec __user *interval);
679asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid,
680 struct old_timespec32 __user *interval);
681
682/* kernel/signal.c */
683asmlinkage long sys_restart_syscall(void);
684asmlinkage long sys_kill(pid_t pid, int sig);
685asmlinkage long sys_tkill(pid_t pid, int sig);
686asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
687asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
688 struct sigaltstack __user *uoss);
689asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
690#ifndef CONFIG_ODD_RT_SIGACTION
691asmlinkage long sys_rt_sigaction(int,
692 const struct sigaction __user *,
693 struct sigaction __user *,
694 size_t);
695#endif
696asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
697 sigset_t __user *oset, size_t sigsetsize);
698asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
699asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
700 siginfo_t __user *uinfo,
701 const struct __kernel_timespec __user *uts,
702 size_t sigsetsize);
703asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
704 siginfo_t __user *uinfo,
705 const struct old_timespec32 __user *uts,
706 size_t sigsetsize);
707asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
708
709/* kernel/sys.c */
710asmlinkage long sys_setpriority(int which, int who, int niceval);
711asmlinkage long sys_getpriority(int which, int who);
712asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
713 void __user *arg);
714asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
715asmlinkage long sys_setgid(gid_t gid);
716asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
717asmlinkage long sys_setuid(uid_t uid);
718asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
719asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
720asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
721asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
722asmlinkage long sys_setfsuid(uid_t uid);
723asmlinkage long sys_setfsgid(gid_t gid);
724asmlinkage long sys_times(struct tms __user *tbuf);
725asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
726asmlinkage long sys_getpgid(pid_t pid);
727asmlinkage long sys_getsid(pid_t pid);
728asmlinkage long sys_setsid(void);
729asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
730asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
731asmlinkage long sys_newuname(struct new_utsname __user *name);
732asmlinkage long sys_sethostname(char __user *name, int len);
733asmlinkage long sys_setdomainname(char __user *name, int len);
734asmlinkage long sys_getrlimit(unsigned int resource,
735 struct rlimit __user *rlim);
736asmlinkage long sys_setrlimit(unsigned int resource,
737 struct rlimit __user *rlim);
738asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
739asmlinkage long sys_umask(int mask);
740asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
741 unsigned long arg4, unsigned long arg5);
742asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
743
744/* kernel/time.c */
745asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv,
746 struct timezone __user *tz);
747asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv,
748 struct timezone __user *tz);
749asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p);
750asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p);
751
752/* kernel/sys.c */
753asmlinkage long sys_getpid(void);
754asmlinkage long sys_getppid(void);
755asmlinkage long sys_getuid(void);
756asmlinkage long sys_geteuid(void);
757asmlinkage long sys_getgid(void);
758asmlinkage long sys_getegid(void);
759asmlinkage long sys_gettid(void);
760asmlinkage long sys_sysinfo(struct sysinfo __user *info);
761
762/* ipc/mqueue.c */
763asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
764asmlinkage long sys_mq_unlink(const char __user *name);
765asmlinkage 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);
766asmlinkage 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);
767asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
768asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
769asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes,
770 char __user *u_msg_ptr,
771 unsigned int msg_len, unsigned int __user *u_msg_prio,
772 const struct old_timespec32 __user *u_abs_timeout);
773asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes,
774 const char __user *u_msg_ptr,
775 unsigned int msg_len, unsigned int msg_prio,
776 const struct old_timespec32 __user *u_abs_timeout);
777
778/* ipc/msg.c */
779asmlinkage long sys_msgget(key_t key, int msgflg);
780asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
781asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
782asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
783 size_t msgsz, long msgtyp, int msgflg);
784asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
785 size_t msgsz, int msgflg);
786
787/* ipc/sem.c */
788asmlinkage long sys_semget(key_t key, int nsems, int semflg);
789asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
790asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
791asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
792 unsigned nsops,
793 const struct __kernel_timespec __user *timeout);
794asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops,
795 unsigned nsops,
796 const struct old_timespec32 __user *timeout);
797asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
798 unsigned nsops);
799
800/* ipc/shm.c */
801asmlinkage long sys_shmget(key_t key, size_t size, int flag);
802asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
803asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
804asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
805asmlinkage long sys_shmdt(char __user *shmaddr);
806
807/* net/socket.c */
808asmlinkage long sys_socket(int, int, int);
809asmlinkage long sys_socketpair(int, int, int, int __user *);
810asmlinkage long sys_bind(int, struct sockaddr __user *, int);
811asmlinkage long sys_listen(int, int);
812asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
813asmlinkage long sys_connect(int, struct sockaddr __user *, int);
814asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
815asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
816asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
817 struct sockaddr __user *, int);
818asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
819 struct sockaddr __user *, int __user *);
820asmlinkage long sys_setsockopt(int fd, int level, int optname,
821 char __user *optval, int optlen);
822asmlinkage long sys_getsockopt(int fd, int level, int optname,
823 char __user *optval, int __user *optlen);
824asmlinkage long sys_shutdown(int, int);
825asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
826asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
827
828/* mm/filemap.c */
829asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
830
831/* mm/nommu.c, also with MMU */
832asmlinkage long sys_brk(unsigned long brk);
833asmlinkage long sys_munmap(unsigned long addr, size_t len);
834asmlinkage long sys_mremap(unsigned long addr,
835 unsigned long old_len, unsigned long new_len,
836 unsigned long flags, unsigned long new_addr);
837
838/* security/keys/keyctl.c */
839asmlinkage long sys_add_key(const char __user *_type,
840 const char __user *_description,
841 const void __user *_payload,
842 size_t plen,
843 key_serial_t destringid);
844asmlinkage long sys_request_key(const char __user *_type,
845 const char __user *_description,
846 const char __user *_callout_info,
847 key_serial_t destringid);
848asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
849 unsigned long arg4, unsigned long arg5);
850
851/* arch/example/kernel/sys_example.c */
852#ifdef CONFIG_CLONE_BACKWARDS
853asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
854 int __user *);
855#else
856#ifdef CONFIG_CLONE_BACKWARDS3
857asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
858 int __user *, unsigned long);
859#else
860asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
861 int __user *, unsigned long);
862#endif
863#endif
864
865asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size);
866
867asmlinkage long sys_execve(const char __user *filename,
868 const char __user *const __user *argv,
869 const char __user *const __user *envp);
870
871/* mm/fadvise.c */
872asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
873
874/* mm/, CONFIG_MMU only */
875asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
876asmlinkage long sys_swapoff(const char __user *specialfile);
877asmlinkage long sys_mprotect(unsigned long start, size_t len,
878 unsigned long prot);
879asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
880asmlinkage long sys_mlock(unsigned long start, size_t len);
881asmlinkage long sys_munlock(unsigned long start, size_t len);
882asmlinkage long sys_mlockall(int flags);
883asmlinkage long sys_munlockall(void);
884asmlinkage long sys_mincore(unsigned long start, size_t len,
885 unsigned char __user * vec);
886asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
887asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec,
888 size_t vlen, int behavior, unsigned int flags);
889asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
890 unsigned long prot, unsigned long pgoff,
891 unsigned long flags);
892asmlinkage long sys_mbind(unsigned long start, unsigned long len,
893 unsigned long mode,
894 const unsigned long __user *nmask,
895 unsigned long maxnode,
896 unsigned flags);
897asmlinkage long sys_get_mempolicy(int __user *policy,
898 unsigned long __user *nmask,
899 unsigned long maxnode,
900 unsigned long addr, unsigned long flags);
901asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
902 unsigned long maxnode);
903asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
904 const unsigned long __user *from,
905 const unsigned long __user *to);
906asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
907 const void __user * __user *pages,
908 const int __user *nodes,
909 int __user *status,
910 int flags);
911
912asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
913 siginfo_t __user *uinfo);
914asmlinkage long sys_perf_event_open(
915 struct perf_event_attr __user *attr_uptr,
916 pid_t pid, int cpu, int group_fd, unsigned long flags);
917asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
918asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
919 unsigned int vlen, unsigned flags,
920 struct __kernel_timespec __user *timeout);
921asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
922 unsigned int vlen, unsigned flags,
923 struct old_timespec32 __user *timeout);
924
925asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
926 int options, struct rusage __user *ru);
927asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
928 const struct rlimit64 __user *new_rlim,
929 struct rlimit64 __user *old_rlim);
930asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
931asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
932 u64 mask, int fd,
933 const char __user *pathname);
934asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
935 struct file_handle __user *handle,
936 int __user *mnt_id, int flag);
937asmlinkage long sys_open_by_handle_at(int mountdirfd,
938 struct file_handle __user *handle,
939 int flags);
940asmlinkage long sys_clock_adjtime(clockid_t which_clock,
941 struct __kernel_timex __user *tx);
942asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
943 struct old_timex32 __user *tx);
944asmlinkage long sys_syncfs(int fd);
945asmlinkage long sys_setns(int fd, int nstype);
946asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags);
947asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
948 unsigned int vlen, unsigned flags);
949asmlinkage long sys_process_vm_readv(pid_t pid,
950 const struct iovec __user *lvec,
951 unsigned long liovcnt,
952 const struct iovec __user *rvec,
953 unsigned long riovcnt,
954 unsigned long flags);
955asmlinkage long sys_process_vm_writev(pid_t pid,
956 const struct iovec __user *lvec,
957 unsigned long liovcnt,
958 const struct iovec __user *rvec,
959 unsigned long riovcnt,
960 unsigned long flags);
961asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
962 unsigned long idx1, unsigned long idx2);
963asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
964asmlinkage long sys_sched_setattr(pid_t pid,
965 struct sched_attr __user *attr,
966 unsigned int flags);
967asmlinkage long sys_sched_getattr(pid_t pid,
968 struct sched_attr __user *attr,
969 unsigned int size,
970 unsigned int flags);
971asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
972 int newdfd, const char __user *newname,
973 unsigned int flags);
974asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
975 void __user *uargs);
976asmlinkage long sys_getrandom(char __user *buf, size_t count,
977 unsigned int flags);
978asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
979asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
980asmlinkage long sys_execveat(int dfd, const char __user *filename,
981 const char __user *const __user *argv,
982 const char __user *const __user *envp, int flags);
983asmlinkage long sys_userfaultfd(int flags);
984asmlinkage long sys_membarrier(int cmd, unsigned int flags, int cpu_id);
985asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
986asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
987 int fd_out, loff_t __user *off_out,
988 size_t len, unsigned int flags);
989asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
990 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
991 rwf_t flags);
992asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
993 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
994 rwf_t flags);
995asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
996 unsigned long prot, int pkey);
997asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
998asmlinkage long sys_pkey_free(int pkey);
999asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
1000 unsigned mask, struct statx __user *buffer);
1001asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
1002 int flags, uint32_t sig);
1003asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags);
1004asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path,
1005 int to_dfd, const char __user *to_path,
1006 unsigned int ms_flags);
1007asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags);
1008asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key,
1009 const void __user *value, int aux);
1010asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags);
1011asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags);
1012asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
1013 siginfo_t __user *info,
1014 unsigned int flags);
1015asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags);
1016
1017/*
1018 * Architecture-specific system calls
1019 */
1020
1021/* arch/x86/kernel/ioport.c */
1022asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
1023
1024/* pciconfig: alpha, arm, arm64, ia64, sparc */
1025asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
1026 unsigned long off, unsigned long len,
1027 void __user *buf);
1028asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
1029 unsigned long off, unsigned long len,
1030 void __user *buf);
1031asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
1032
1033/* powerpc */
1034asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
1035 __u32 __user *ustatus);
1036asmlinkage long sys_spu_create(const char __user *name,
1037 unsigned int flags, umode_t mode, int fd);
1038
1039
1040/*
1041 * Deprecated system calls which are still defined in
1042 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
1043 */
1044
1045/* __ARCH_WANT_SYSCALL_NO_AT */
1046asmlinkage long sys_open(const char __user *filename,
1047 int flags, umode_t mode);
1048asmlinkage long sys_link(const char __user *oldname,
1049 const char __user *newname);
1050asmlinkage long sys_unlink(const char __user *pathname);
1051asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
1052 unsigned dev);
1053asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
1054asmlinkage long sys_chown(const char __user *filename,
1055 uid_t user, gid_t group);
1056asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
1057asmlinkage long sys_rmdir(const char __user *pathname);
1058asmlinkage long sys_lchown(const char __user *filename,
1059 uid_t user, gid_t group);
1060asmlinkage long sys_access(const char __user *filename, int mode);
1061asmlinkage long sys_rename(const char __user *oldname,
1062 const char __user *newname);
1063asmlinkage long sys_symlink(const char __user *old, const char __user *new);
1064#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
1065asmlinkage long sys_stat64(const char __user *filename,
1066 struct stat64 __user *statbuf);
1067asmlinkage long sys_lstat64(const char __user *filename,
1068 struct stat64 __user *statbuf);
1069#endif
1070
1071/* __ARCH_WANT_SYSCALL_NO_FLAGS */
1072asmlinkage long sys_pipe(int __user *fildes);
1073asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
1074asmlinkage long sys_epoll_create(int size);
1075asmlinkage long sys_inotify_init(void);
1076asmlinkage long sys_eventfd(unsigned int count);
1077asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
1078
1079/* __ARCH_WANT_SYSCALL_OFF_T */
1080asmlinkage long sys_sendfile(int out_fd, int in_fd,
1081 off_t __user *offset, size_t count);
1082asmlinkage long sys_newstat(const char __user *filename,
1083 struct stat __user *statbuf);
1084asmlinkage long sys_newlstat(const char __user *filename,
1085 struct stat __user *statbuf);
1086asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
1087
1088/* __ARCH_WANT_SYSCALL_DEPRECATED */
1089asmlinkage long sys_alarm(unsigned int seconds);
1090asmlinkage long sys_getpgrp(void);
1091asmlinkage long sys_pause(void);
1092asmlinkage long sys_time(__kernel_old_time_t __user *tloc);
1093asmlinkage long sys_time32(old_time32_t __user *tloc);
1094#ifdef __ARCH_WANT_SYS_UTIME
1095asmlinkage long sys_utime(char __user *filename,
1096 struct utimbuf __user *times);
1097asmlinkage long sys_utimes(char __user *filename,
1098 struct __kernel_old_timeval __user *utimes);
1099asmlinkage long sys_futimesat(int dfd, const char __user *filename,
1100 struct __kernel_old_timeval __user *utimes);
1101#endif
1102asmlinkage long sys_futimesat_time32(unsigned int dfd,
1103 const char __user *filename,
1104 struct old_timeval32 __user *t);
1105asmlinkage long sys_utime32(const char __user *filename,
1106 struct old_utimbuf32 __user *t);
1107asmlinkage long sys_utimes_time32(const char __user *filename,
1108 struct old_timeval32 __user *t);
1109asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
1110asmlinkage long sys_getdents(unsigned int fd,
1111 struct linux_dirent __user *dirent,
1112 unsigned int count);
1113asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
1114 fd_set __user *exp, struct __kernel_old_timeval __user *tvp);
1115asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
1116 int timeout);
1117asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1118 int maxevents, int timeout);
1119asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1120asmlinkage long sys_vfork(void);
1121asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1122asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1123asmlinkage long sys_bdflush(int func, long data);
1124asmlinkage long sys_oldumount(char __user *name);
1125asmlinkage long sys_uselib(const char __user *library);
1126asmlinkage long sys_sysfs(int option,
1127 unsigned long arg1, unsigned long arg2);
1128asmlinkage long sys_fork(void);
1129
1130/* obsolete: kernel/time/time.c */
1131asmlinkage long sys_stime(__kernel_old_time_t __user *tptr);
1132asmlinkage long sys_stime32(old_time32_t __user *tptr);
1133
1134/* obsolete: kernel/signal.c */
1135asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1136asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1137 old_sigset_t __user *oset);
1138#ifdef CONFIG_OLD_SIGSUSPEND
1139asmlinkage long sys_sigsuspend(old_sigset_t mask);
1140#endif
1141
1142#ifdef CONFIG_OLD_SIGSUSPEND3
1143asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1144#endif
1145
1146#ifdef CONFIG_OLD_SIGACTION
1147asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1148 struct old_sigaction __user *);
1149#endif
1150asmlinkage long sys_sgetmask(void);
1151asmlinkage long sys_ssetmask(int newmask);
1152asmlinkage long sys_signal(int sig, __sighandler_t handler);
1153
1154/* obsolete: kernel/sched/core.c */
1155asmlinkage long sys_nice(int increment);
1156
1157/* obsolete: kernel/kexec_file.c */
1158asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1159 unsigned long cmdline_len,
1160 const char __user *cmdline_ptr,
1161 unsigned long flags);
1162
1163/* obsolete: kernel/exit.c */
1164asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1165
1166/* obsolete: kernel/uid16.c */
1167#ifdef CONFIG_HAVE_UID16
1168asmlinkage long sys_chown16(const char __user *filename,
1169 old_uid_t user, old_gid_t group);
1170asmlinkage long sys_lchown16(const char __user *filename,
1171 old_uid_t user, old_gid_t group);
1172asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1173asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1174asmlinkage long sys_setgid16(old_gid_t gid);
1175asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1176asmlinkage long sys_setuid16(old_uid_t uid);
1177asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1178asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1179 old_uid_t __user *euid, old_uid_t __user *suid);
1180asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1181asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1182 old_gid_t __user *egid, old_gid_t __user *sgid);
1183asmlinkage long sys_setfsuid16(old_uid_t uid);
1184asmlinkage long sys_setfsgid16(old_gid_t gid);
1185asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1186asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1187asmlinkage long sys_getuid16(void);
1188asmlinkage long sys_geteuid16(void);
1189asmlinkage long sys_getgid16(void);
1190asmlinkage long sys_getegid16(void);
1191#endif
1192
1193/* obsolete: net/socket.c */
1194asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1195
1196/* obsolete: fs/stat.c */
1197asmlinkage long sys_stat(const char __user *filename,
1198 struct __old_kernel_stat __user *statbuf);
1199asmlinkage long sys_lstat(const char __user *filename,
1200 struct __old_kernel_stat __user *statbuf);
1201asmlinkage long sys_fstat(unsigned int fd,
1202 struct __old_kernel_stat __user *statbuf);
1203asmlinkage long sys_readlink(const char __user *path,
1204 char __user *buf, int bufsiz);
1205
1206/* obsolete: fs/select.c */
1207asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1208
1209/* obsolete: fs/readdir.c */
1210asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1211
1212/* obsolete: kernel/sys.c */
1213asmlinkage long sys_gethostname(char __user *name, int len);
1214asmlinkage long sys_uname(struct old_utsname __user *);
1215asmlinkage long sys_olduname(struct oldold_utsname __user *);
1216#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1217asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1218#endif
1219
1220/* obsolete: ipc */
1221asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1222 unsigned long third, void __user *ptr, long fifth);
1223
1224/* obsolete: mm/ */
1225asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1226 unsigned long prot, unsigned long flags,
1227 unsigned long fd, unsigned long pgoff);
1228asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1229
1230
1231/*
1232 * Not a real system call, but a placeholder for syscalls which are
1233 * not implemented -- see kernel/sys_ni.c
1234 */
1235asmlinkage long sys_ni_syscall(void);
1236
1237#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1238
1239
1240/*
1241 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1242 * Instead, use one of the functions which work equivalently, such as
1243 * the ksys_xyzyyz() functions prototyped below.
1244 */
1245ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1246int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1247ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1248void ksys_sync(void);
1249int ksys_unshare(unsigned long unshare_flags);
1250int ksys_setsid(void);
1251int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1252 unsigned int flags);
1253ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1254 loff_t pos);
1255ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1256 size_t count, loff_t pos);
1257int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1258#ifdef CONFIG_ADVISE_SYSCALLS
1259int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1260#else
1261static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1262 int advice)
1263{
1264 return -EINVAL;
1265}
1266#endif
1267unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1268 unsigned long prot, unsigned long flags,
1269 unsigned long fd, unsigned long pgoff);
1270ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1271int ksys_ipc(unsigned int call, int first, unsigned long second,
1272 unsigned long third, void __user * ptr, long fifth);
1273int compat_ksys_ipc(u32 call, int first, int second,
1274 u32 third, u32 ptr, u32 fifth);
1275
1276/*
1277 * The following kernel syscall equivalents are just wrappers to fs-internal
1278 * functions. Therefore, provide stubs to be inlined at the callsites.
1279 */
1280extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1281 gid_t group, int flag);
1282
1283static inline long ksys_chown(const char __user *filename, uid_t user,
1284 gid_t group)
1285{
1286 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1287}
1288
1289static inline long ksys_lchown(const char __user *filename, uid_t user,
1290 gid_t group)
1291{
1292 return do_fchownat(AT_FDCWD, filename, user, group,
1293 AT_SYMLINK_NOFOLLOW);
1294}
1295
1296extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1297
1298static inline long ksys_ftruncate(unsigned int fd, loff_t length)
1299{
1300 return do_sys_ftruncate(fd, length, 1);
1301}
1302
1303extern long do_sys_truncate(const char __user *pathname, loff_t length);
1304
1305static inline long ksys_truncate(const char __user *pathname, loff_t length)
1306{
1307 return do_sys_truncate(pathname, length);
1308}
1309
1310static inline unsigned int ksys_personality(unsigned int personality)
1311{
1312 unsigned int old = current->personality;
1313
1314 if (personality != 0xffffffff)
1315 set_personality(personality);
1316
1317 return old;
1318}
1319
1320/* for __ARCH_WANT_SYS_IPC */
1321long ksys_semtimedop(int semid, struct sembuf __user *tsops,
1322 unsigned int nsops,
1323 const struct __kernel_timespec __user *timeout);
1324long ksys_semget(key_t key, int nsems, int semflg);
1325long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
1326long ksys_msgget(key_t key, int msgflg);
1327long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
1328long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1329 long msgtyp, int msgflg);
1330long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1331 int msgflg);
1332long ksys_shmget(key_t key, size_t size, int shmflg);
1333long ksys_shmdt(char __user *shmaddr);
1334long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
1335long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
1336 unsigned int nsops,
1337 const struct old_timespec32 __user *timeout);
1338
1339int __sys_getsockopt(int fd, int level, int optname, char __user *optval,
1340 int __user *optlen);
1341int __sys_setsockopt(int fd, int level, int optname, char __user *optval,
1342 int optlen);
1343#endif