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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;
71struct mount_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 __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 __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 __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/* For split 64-bit arguments on 32-bit architectures */
256#ifdef __LITTLE_ENDIAN
257#define SC_ARG64(name) u32, name##_lo, u32, name##_hi
258#else
259#define SC_ARG64(name) u32, name##_hi, u32, name##_lo
260#endif
261#define SC_VAL64(type, name) ((type) name##_hi << 32 | name##_lo)
262
263#ifdef CONFIG_COMPAT
264#define SYSCALL32_DEFINE1 COMPAT_SYSCALL_DEFINE1
265#define SYSCALL32_DEFINE2 COMPAT_SYSCALL_DEFINE2
266#define SYSCALL32_DEFINE3 COMPAT_SYSCALL_DEFINE3
267#define SYSCALL32_DEFINE4 COMPAT_SYSCALL_DEFINE4
268#define SYSCALL32_DEFINE5 COMPAT_SYSCALL_DEFINE5
269#define SYSCALL32_DEFINE6 COMPAT_SYSCALL_DEFINE6
270#else
271#define SYSCALL32_DEFINE1 SYSCALL_DEFINE1
272#define SYSCALL32_DEFINE2 SYSCALL_DEFINE2
273#define SYSCALL32_DEFINE3 SYSCALL_DEFINE3
274#define SYSCALL32_DEFINE4 SYSCALL_DEFINE4
275#define SYSCALL32_DEFINE5 SYSCALL_DEFINE5
276#define SYSCALL32_DEFINE6 SYSCALL_DEFINE6
277#endif
278
279/*
280 * Called before coming back to user-mode. Returning to user-mode with an
281 * address limit different than USER_DS can allow to overwrite kernel memory.
282 */
283static inline void addr_limit_user_check(void)
284{
285#ifdef TIF_FSCHECK
286 if (!test_thread_flag(TIF_FSCHECK))
287 return;
288#endif
289
290 if (CHECK_DATA_CORRUPTION(uaccess_kernel(),
291 "Invalid address limit on user-mode return"))
292 force_sig(SIGKILL);
293
294#ifdef TIF_FSCHECK
295 clear_thread_flag(TIF_FSCHECK);
296#endif
297}
298
299/*
300 * These syscall function prototypes are kept in the same order as
301 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below,
302 * followed by deprecated or obsolete system calls.
303 *
304 * Please note that these prototypes here are only provided for information
305 * purposes, for static analysis, and for linking from the syscall table.
306 * These functions should not be called elsewhere from kernel code.
307 *
308 * As the syscall calling convention may be different from the default
309 * for architectures overriding the syscall calling convention, do not
310 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
311 */
312#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
313asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
314asmlinkage long sys_io_destroy(aio_context_t ctx);
315asmlinkage long sys_io_submit(aio_context_t, long,
316 struct iocb __user * __user *);
317asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
318 struct io_event __user *result);
319asmlinkage long sys_io_getevents(aio_context_t ctx_id,
320 long min_nr,
321 long nr,
322 struct io_event __user *events,
323 struct __kernel_timespec __user *timeout);
324asmlinkage long sys_io_getevents_time32(__u32 ctx_id,
325 __s32 min_nr,
326 __s32 nr,
327 struct io_event __user *events,
328 struct old_timespec32 __user *timeout);
329asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
330 long min_nr,
331 long nr,
332 struct io_event __user *events,
333 struct __kernel_timespec __user *timeout,
334 const struct __aio_sigset *sig);
335asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
336 long min_nr,
337 long nr,
338 struct io_event __user *events,
339 struct old_timespec32 __user *timeout,
340 const struct __aio_sigset *sig);
341asmlinkage long sys_io_uring_setup(u32 entries,
342 struct io_uring_params __user *p);
343asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit,
344 u32 min_complete, u32 flags,
345 const void __user *argp, size_t argsz);
346asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op,
347 void __user *arg, unsigned int nr_args);
348
349/* fs/xattr.c */
350asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
351 const void __user *value, size_t size, int flags);
352asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
353 const void __user *value, size_t size, int flags);
354asmlinkage long sys_fsetxattr(int fd, const char __user *name,
355 const void __user *value, size_t size, int flags);
356asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
357 void __user *value, size_t size);
358asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
359 void __user *value, size_t size);
360asmlinkage long sys_fgetxattr(int fd, const char __user *name,
361 void __user *value, size_t size);
362asmlinkage long sys_listxattr(const char __user *path, char __user *list,
363 size_t size);
364asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
365 size_t size);
366asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
367asmlinkage long sys_removexattr(const char __user *path,
368 const char __user *name);
369asmlinkage long sys_lremovexattr(const char __user *path,
370 const char __user *name);
371asmlinkage long sys_fremovexattr(int fd, const char __user *name);
372
373/* fs/dcache.c */
374asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
375
376/* fs/cookies.c */
377asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
378
379/* fs/eventfd.c */
380asmlinkage long sys_eventfd2(unsigned int count, int flags);
381
382/* fs/eventpoll.c */
383asmlinkage long sys_epoll_create1(int flags);
384asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
385 struct epoll_event __user *event);
386asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
387 int maxevents, int timeout,
388 const sigset_t __user *sigmask,
389 size_t sigsetsize);
390asmlinkage long sys_epoll_pwait2(int epfd, struct epoll_event __user *events,
391 int maxevents,
392 const struct __kernel_timespec __user *timeout,
393 const sigset_t __user *sigmask,
394 size_t sigsetsize);
395
396/* fs/fcntl.c */
397asmlinkage long sys_dup(unsigned int fildes);
398asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
399asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
400#if BITS_PER_LONG == 32
401asmlinkage long sys_fcntl64(unsigned int fd,
402 unsigned int cmd, unsigned long arg);
403#endif
404
405/* fs/inotify_user.c */
406asmlinkage long sys_inotify_init1(int flags);
407asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
408 u32 mask);
409asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
410
411/* fs/ioctl.c */
412asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
413 unsigned long arg);
414
415/* fs/ioprio.c */
416asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
417asmlinkage long sys_ioprio_get(int which, int who);
418
419/* fs/locks.c */
420asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
421
422/* fs/namei.c */
423asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
424 unsigned dev);
425asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
426asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
427asmlinkage long sys_symlinkat(const char __user * oldname,
428 int newdfd, const char __user * newname);
429asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
430 int newdfd, const char __user *newname, int flags);
431asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
432 int newdfd, const char __user * newname);
433
434/* fs/namespace.c */
435asmlinkage long sys_umount(char __user *name, int flags);
436asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
437 char __user *type, unsigned long flags,
438 void __user *data);
439asmlinkage long sys_pivot_root(const char __user *new_root,
440 const char __user *put_old);
441
442/* fs/nfsctl.c */
443
444/* fs/open.c */
445asmlinkage long sys_statfs(const char __user * path,
446 struct statfs __user *buf);
447asmlinkage long sys_statfs64(const char __user *path, size_t sz,
448 struct statfs64 __user *buf);
449asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
450asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
451 struct statfs64 __user *buf);
452asmlinkage long sys_truncate(const char __user *path, long length);
453asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
454#if BITS_PER_LONG == 32
455asmlinkage long sys_truncate64(const char __user *path, loff_t length);
456asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
457#endif
458asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
459asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
460asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode,
461 int flags);
462asmlinkage long sys_chdir(const char __user *filename);
463asmlinkage long sys_fchdir(unsigned int fd);
464asmlinkage long sys_chroot(const char __user *filename);
465asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
466asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
467 umode_t mode);
468asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
469 gid_t group, int flag);
470asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
471asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
472 umode_t mode);
473asmlinkage long sys_openat2(int dfd, const char __user *filename,
474 struct open_how *how, size_t size);
475asmlinkage long sys_close(unsigned int fd);
476asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd,
477 unsigned int flags);
478asmlinkage long sys_vhangup(void);
479
480/* fs/pipe.c */
481asmlinkage long sys_pipe2(int __user *fildes, int flags);
482
483/* fs/quota.c */
484asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
485 qid_t id, void __user *addr);
486
487/* fs/readdir.c */
488asmlinkage long sys_getdents64(unsigned int fd,
489 struct linux_dirent64 __user *dirent,
490 unsigned int count);
491
492/* fs/read_write.c */
493asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
494 unsigned long offset_low, loff_t __user *result,
495 unsigned int whence);
496asmlinkage long sys_lseek(unsigned int fd, off_t offset,
497 unsigned int whence);
498asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
499asmlinkage long sys_write(unsigned int fd, const char __user *buf,
500 size_t count);
501asmlinkage long sys_readv(unsigned long fd,
502 const struct iovec __user *vec,
503 unsigned long vlen);
504asmlinkage long sys_writev(unsigned long fd,
505 const struct iovec __user *vec,
506 unsigned long vlen);
507asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
508 size_t count, loff_t pos);
509asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
510 size_t count, loff_t pos);
511asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
512 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
513asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
514 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
515
516/* fs/sendfile.c */
517asmlinkage long sys_sendfile64(int out_fd, int in_fd,
518 loff_t __user *offset, size_t count);
519
520/* fs/select.c */
521asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
522 fd_set __user *, struct __kernel_timespec __user *,
523 void __user *);
524asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
525 fd_set __user *, struct old_timespec32 __user *,
526 void __user *);
527asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
528 struct __kernel_timespec __user *, const sigset_t __user *,
529 size_t);
530asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
531 struct old_timespec32 __user *, const sigset_t __user *,
532 size_t);
533
534/* fs/signalfd.c */
535asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
536
537/* fs/splice.c */
538asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
539 unsigned long nr_segs, unsigned int flags);
540asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
541 int fd_out, loff_t __user *off_out,
542 size_t len, unsigned int flags);
543asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
544
545/* fs/stat.c */
546asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
547 int bufsiz);
548asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
549 struct stat __user *statbuf, int flag);
550asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
551#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
552asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
553asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
554 struct stat64 __user *statbuf, int flag);
555#endif
556
557/* fs/sync.c */
558asmlinkage long sys_sync(void);
559asmlinkage long sys_fsync(unsigned int fd);
560asmlinkage long sys_fdatasync(unsigned int fd);
561asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
562 loff_t offset, loff_t nbytes);
563asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
564 unsigned int flags);
565
566/* fs/timerfd.c */
567asmlinkage long sys_timerfd_create(int clockid, int flags);
568asmlinkage long sys_timerfd_settime(int ufd, int flags,
569 const struct __kernel_itimerspec __user *utmr,
570 struct __kernel_itimerspec __user *otmr);
571asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
572asmlinkage long sys_timerfd_gettime32(int ufd,
573 struct old_itimerspec32 __user *otmr);
574asmlinkage long sys_timerfd_settime32(int ufd, int flags,
575 const struct old_itimerspec32 __user *utmr,
576 struct old_itimerspec32 __user *otmr);
577
578/* fs/utimes.c */
579asmlinkage long sys_utimensat(int dfd, const char __user *filename,
580 struct __kernel_timespec __user *utimes,
581 int flags);
582asmlinkage long sys_utimensat_time32(unsigned int dfd,
583 const char __user *filename,
584 struct old_timespec32 __user *t, int flags);
585
586/* kernel/acct.c */
587asmlinkage long sys_acct(const char __user *name);
588
589/* kernel/capability.c */
590asmlinkage long sys_capget(cap_user_header_t header,
591 cap_user_data_t dataptr);
592asmlinkage long sys_capset(cap_user_header_t header,
593 const cap_user_data_t data);
594
595/* kernel/exec_domain.c */
596asmlinkage long sys_personality(unsigned int personality);
597
598/* kernel/exit.c */
599asmlinkage long sys_exit(int error_code);
600asmlinkage long sys_exit_group(int error_code);
601asmlinkage long sys_waitid(int which, pid_t pid,
602 struct siginfo __user *infop,
603 int options, struct rusage __user *ru);
604
605/* kernel/fork.c */
606asmlinkage long sys_set_tid_address(int __user *tidptr);
607asmlinkage long sys_unshare(unsigned long unshare_flags);
608
609/* kernel/futex.c */
610asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
611 const struct __kernel_timespec __user *utime,
612 u32 __user *uaddr2, u32 val3);
613asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
614 const struct old_timespec32 __user *utime,
615 u32 __user *uaddr2, u32 val3);
616asmlinkage long sys_get_robust_list(int pid,
617 struct robust_list_head __user * __user *head_ptr,
618 size_t __user *len_ptr);
619asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
620 size_t len);
621
622/* kernel/hrtimer.c */
623asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
624 struct __kernel_timespec __user *rmtp);
625asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp,
626 struct old_timespec32 __user *rmtp);
627
628/* kernel/itimer.c */
629asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value);
630asmlinkage long sys_setitimer(int which,
631 struct __kernel_old_itimerval __user *value,
632 struct __kernel_old_itimerval __user *ovalue);
633
634/* kernel/kexec.c */
635asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
636 struct kexec_segment __user *segments,
637 unsigned long flags);
638
639/* kernel/module.c */
640asmlinkage long sys_init_module(void __user *umod, unsigned long len,
641 const char __user *uargs);
642asmlinkage long sys_delete_module(const char __user *name_user,
643 unsigned int flags);
644
645/* kernel/posix-timers.c */
646asmlinkage long sys_timer_create(clockid_t which_clock,
647 struct sigevent __user *timer_event_spec,
648 timer_t __user * created_timer_id);
649asmlinkage long sys_timer_gettime(timer_t timer_id,
650 struct __kernel_itimerspec __user *setting);
651asmlinkage long sys_timer_getoverrun(timer_t timer_id);
652asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
653 const struct __kernel_itimerspec __user *new_setting,
654 struct __kernel_itimerspec __user *old_setting);
655asmlinkage long sys_timer_delete(timer_t timer_id);
656asmlinkage long sys_clock_settime(clockid_t which_clock,
657 const struct __kernel_timespec __user *tp);
658asmlinkage long sys_clock_gettime(clockid_t which_clock,
659 struct __kernel_timespec __user *tp);
660asmlinkage long sys_clock_getres(clockid_t which_clock,
661 struct __kernel_timespec __user *tp);
662asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
663 const struct __kernel_timespec __user *rqtp,
664 struct __kernel_timespec __user *rmtp);
665asmlinkage long sys_timer_gettime32(timer_t timer_id,
666 struct old_itimerspec32 __user *setting);
667asmlinkage long sys_timer_settime32(timer_t timer_id, int flags,
668 struct old_itimerspec32 __user *new,
669 struct old_itimerspec32 __user *old);
670asmlinkage long sys_clock_settime32(clockid_t which_clock,
671 struct old_timespec32 __user *tp);
672asmlinkage long sys_clock_gettime32(clockid_t which_clock,
673 struct old_timespec32 __user *tp);
674asmlinkage long sys_clock_getres_time32(clockid_t which_clock,
675 struct old_timespec32 __user *tp);
676asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags,
677 struct old_timespec32 __user *rqtp,
678 struct old_timespec32 __user *rmtp);
679
680/* kernel/printk.c */
681asmlinkage long sys_syslog(int type, char __user *buf, int len);
682
683/* kernel/ptrace.c */
684asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
685 unsigned long data);
686/* kernel/sched/core.c */
687
688asmlinkage long sys_sched_setparam(pid_t pid,
689 struct sched_param __user *param);
690asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
691 struct sched_param __user *param);
692asmlinkage long sys_sched_getscheduler(pid_t pid);
693asmlinkage long sys_sched_getparam(pid_t pid,
694 struct sched_param __user *param);
695asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
696 unsigned long __user *user_mask_ptr);
697asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
698 unsigned long __user *user_mask_ptr);
699asmlinkage long sys_sched_yield(void);
700asmlinkage long sys_sched_get_priority_max(int policy);
701asmlinkage long sys_sched_get_priority_min(int policy);
702asmlinkage long sys_sched_rr_get_interval(pid_t pid,
703 struct __kernel_timespec __user *interval);
704asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid,
705 struct old_timespec32 __user *interval);
706
707/* kernel/signal.c */
708asmlinkage long sys_restart_syscall(void);
709asmlinkage long sys_kill(pid_t pid, int sig);
710asmlinkage long sys_tkill(pid_t pid, int sig);
711asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
712asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
713 struct sigaltstack __user *uoss);
714asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
715#ifndef CONFIG_ODD_RT_SIGACTION
716asmlinkage long sys_rt_sigaction(int,
717 const struct sigaction __user *,
718 struct sigaction __user *,
719 size_t);
720#endif
721asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
722 sigset_t __user *oset, size_t sigsetsize);
723asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
724asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
725 siginfo_t __user *uinfo,
726 const struct __kernel_timespec __user *uts,
727 size_t sigsetsize);
728asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
729 siginfo_t __user *uinfo,
730 const struct old_timespec32 __user *uts,
731 size_t sigsetsize);
732asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
733
734/* kernel/sys.c */
735asmlinkage long sys_setpriority(int which, int who, int niceval);
736asmlinkage long sys_getpriority(int which, int who);
737asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
738 void __user *arg);
739asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
740asmlinkage long sys_setgid(gid_t gid);
741asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
742asmlinkage long sys_setuid(uid_t uid);
743asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
744asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
745asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
746asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
747asmlinkage long sys_setfsuid(uid_t uid);
748asmlinkage long sys_setfsgid(gid_t gid);
749asmlinkage long sys_times(struct tms __user *tbuf);
750asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
751asmlinkage long sys_getpgid(pid_t pid);
752asmlinkage long sys_getsid(pid_t pid);
753asmlinkage long sys_setsid(void);
754asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
755asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
756asmlinkage long sys_newuname(struct new_utsname __user *name);
757asmlinkage long sys_sethostname(char __user *name, int len);
758asmlinkage long sys_setdomainname(char __user *name, int len);
759asmlinkage long sys_getrlimit(unsigned int resource,
760 struct rlimit __user *rlim);
761asmlinkage long sys_setrlimit(unsigned int resource,
762 struct rlimit __user *rlim);
763asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
764asmlinkage long sys_umask(int mask);
765asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
766 unsigned long arg4, unsigned long arg5);
767asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
768
769/* kernel/time.c */
770asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv,
771 struct timezone __user *tz);
772asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv,
773 struct timezone __user *tz);
774asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p);
775asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p);
776
777/* kernel/sys.c */
778asmlinkage long sys_getpid(void);
779asmlinkage long sys_getppid(void);
780asmlinkage long sys_getuid(void);
781asmlinkage long sys_geteuid(void);
782asmlinkage long sys_getgid(void);
783asmlinkage long sys_getegid(void);
784asmlinkage long sys_gettid(void);
785asmlinkage long sys_sysinfo(struct sysinfo __user *info);
786
787/* ipc/mqueue.c */
788asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
789asmlinkage long sys_mq_unlink(const char __user *name);
790asmlinkage 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);
791asmlinkage 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);
792asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
793asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
794asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes,
795 char __user *u_msg_ptr,
796 unsigned int msg_len, unsigned int __user *u_msg_prio,
797 const struct old_timespec32 __user *u_abs_timeout);
798asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes,
799 const char __user *u_msg_ptr,
800 unsigned int msg_len, unsigned int msg_prio,
801 const struct old_timespec32 __user *u_abs_timeout);
802
803/* ipc/msg.c */
804asmlinkage long sys_msgget(key_t key, int msgflg);
805asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
806asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
807asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
808 size_t msgsz, long msgtyp, int msgflg);
809asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
810 size_t msgsz, int msgflg);
811
812/* ipc/sem.c */
813asmlinkage long sys_semget(key_t key, int nsems, int semflg);
814asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
815asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
816asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
817 unsigned nsops,
818 const struct __kernel_timespec __user *timeout);
819asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops,
820 unsigned nsops,
821 const struct old_timespec32 __user *timeout);
822asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
823 unsigned nsops);
824
825/* ipc/shm.c */
826asmlinkage long sys_shmget(key_t key, size_t size, int flag);
827asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
828asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
829asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
830asmlinkage long sys_shmdt(char __user *shmaddr);
831
832/* net/socket.c */
833asmlinkage long sys_socket(int, int, int);
834asmlinkage long sys_socketpair(int, int, int, int __user *);
835asmlinkage long sys_bind(int, struct sockaddr __user *, int);
836asmlinkage long sys_listen(int, int);
837asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
838asmlinkage long sys_connect(int, struct sockaddr __user *, int);
839asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
840asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
841asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
842 struct sockaddr __user *, int);
843asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
844 struct sockaddr __user *, int __user *);
845asmlinkage long sys_setsockopt(int fd, int level, int optname,
846 char __user *optval, int optlen);
847asmlinkage long sys_getsockopt(int fd, int level, int optname,
848 char __user *optval, int __user *optlen);
849asmlinkage long sys_shutdown(int, int);
850asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
851asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
852
853/* mm/filemap.c */
854asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
855
856/* mm/nommu.c, also with MMU */
857asmlinkage long sys_brk(unsigned long brk);
858asmlinkage long sys_munmap(unsigned long addr, size_t len);
859asmlinkage long sys_mremap(unsigned long addr,
860 unsigned long old_len, unsigned long new_len,
861 unsigned long flags, unsigned long new_addr);
862
863/* security/keys/keyctl.c */
864asmlinkage long sys_add_key(const char __user *_type,
865 const char __user *_description,
866 const void __user *_payload,
867 size_t plen,
868 key_serial_t destringid);
869asmlinkage long sys_request_key(const char __user *_type,
870 const char __user *_description,
871 const char __user *_callout_info,
872 key_serial_t destringid);
873asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
874 unsigned long arg4, unsigned long arg5);
875
876/* arch/example/kernel/sys_example.c */
877#ifdef CONFIG_CLONE_BACKWARDS
878asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
879 int __user *);
880#else
881#ifdef CONFIG_CLONE_BACKWARDS3
882asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
883 int __user *, unsigned long);
884#else
885asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
886 int __user *, unsigned long);
887#endif
888#endif
889
890asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size);
891
892asmlinkage long sys_execve(const char __user *filename,
893 const char __user *const __user *argv,
894 const char __user *const __user *envp);
895
896/* mm/fadvise.c */
897asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
898
899/* mm/, CONFIG_MMU only */
900asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
901asmlinkage long sys_swapoff(const char __user *specialfile);
902asmlinkage long sys_mprotect(unsigned long start, size_t len,
903 unsigned long prot);
904asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
905asmlinkage long sys_mlock(unsigned long start, size_t len);
906asmlinkage long sys_munlock(unsigned long start, size_t len);
907asmlinkage long sys_mlockall(int flags);
908asmlinkage long sys_munlockall(void);
909asmlinkage long sys_mincore(unsigned long start, size_t len,
910 unsigned char __user * vec);
911asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
912asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec,
913 size_t vlen, int behavior, unsigned int flags);
914asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
915 unsigned long prot, unsigned long pgoff,
916 unsigned long flags);
917asmlinkage long sys_mbind(unsigned long start, unsigned long len,
918 unsigned long mode,
919 const unsigned long __user *nmask,
920 unsigned long maxnode,
921 unsigned flags);
922asmlinkage long sys_get_mempolicy(int __user *policy,
923 unsigned long __user *nmask,
924 unsigned long maxnode,
925 unsigned long addr, unsigned long flags);
926asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
927 unsigned long maxnode);
928asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
929 const unsigned long __user *from,
930 const unsigned long __user *to);
931asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
932 const void __user * __user *pages,
933 const int __user *nodes,
934 int __user *status,
935 int flags);
936
937asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
938 siginfo_t __user *uinfo);
939asmlinkage long sys_perf_event_open(
940 struct perf_event_attr __user *attr_uptr,
941 pid_t pid, int cpu, int group_fd, unsigned long flags);
942asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
943asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
944 unsigned int vlen, unsigned flags,
945 struct __kernel_timespec __user *timeout);
946asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
947 unsigned int vlen, unsigned flags,
948 struct old_timespec32 __user *timeout);
949
950asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
951 int options, struct rusage __user *ru);
952asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
953 const struct rlimit64 __user *new_rlim,
954 struct rlimit64 __user *old_rlim);
955asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
956asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
957 u64 mask, int fd,
958 const char __user *pathname);
959asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
960 struct file_handle __user *handle,
961 int __user *mnt_id, int flag);
962asmlinkage long sys_open_by_handle_at(int mountdirfd,
963 struct file_handle __user *handle,
964 int flags);
965asmlinkage long sys_clock_adjtime(clockid_t which_clock,
966 struct __kernel_timex __user *tx);
967asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
968 struct old_timex32 __user *tx);
969asmlinkage long sys_syncfs(int fd);
970asmlinkage long sys_setns(int fd, int nstype);
971asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags);
972asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
973 unsigned int vlen, unsigned flags);
974asmlinkage long sys_process_vm_readv(pid_t pid,
975 const struct iovec __user *lvec,
976 unsigned long liovcnt,
977 const struct iovec __user *rvec,
978 unsigned long riovcnt,
979 unsigned long flags);
980asmlinkage long sys_process_vm_writev(pid_t pid,
981 const struct iovec __user *lvec,
982 unsigned long liovcnt,
983 const struct iovec __user *rvec,
984 unsigned long riovcnt,
985 unsigned long flags);
986asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
987 unsigned long idx1, unsigned long idx2);
988asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
989asmlinkage long sys_sched_setattr(pid_t pid,
990 struct sched_attr __user *attr,
991 unsigned int flags);
992asmlinkage long sys_sched_getattr(pid_t pid,
993 struct sched_attr __user *attr,
994 unsigned int size,
995 unsigned int flags);
996asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
997 int newdfd, const char __user *newname,
998 unsigned int flags);
999asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
1000 void __user *uargs);
1001asmlinkage long sys_getrandom(char __user *buf, size_t count,
1002 unsigned int flags);
1003asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
1004asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1005asmlinkage long sys_execveat(int dfd, const char __user *filename,
1006 const char __user *const __user *argv,
1007 const char __user *const __user *envp, int flags);
1008asmlinkage long sys_userfaultfd(int flags);
1009asmlinkage long sys_membarrier(int cmd, unsigned int flags, int cpu_id);
1010asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
1011asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
1012 int fd_out, loff_t __user *off_out,
1013 size_t len, unsigned int flags);
1014asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
1015 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
1016 rwf_t flags);
1017asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
1018 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
1019 rwf_t flags);
1020asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
1021 unsigned long prot, int pkey);
1022asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
1023asmlinkage long sys_pkey_free(int pkey);
1024asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
1025 unsigned mask, struct statx __user *buffer);
1026asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
1027 int flags, uint32_t sig);
1028asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags);
1029asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path,
1030 int to_dfd, const char __user *to_path,
1031 unsigned int ms_flags);
1032asmlinkage long sys_mount_setattr(int dfd, const char __user *path,
1033 unsigned int flags,
1034 struct mount_attr __user *uattr, size_t usize);
1035asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags);
1036asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key,
1037 const void __user *value, int aux);
1038asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags);
1039asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags);
1040asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
1041 siginfo_t __user *info,
1042 unsigned int flags);
1043asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags);
1044
1045/*
1046 * Architecture-specific system calls
1047 */
1048
1049/* arch/x86/kernel/ioport.c */
1050asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
1051
1052/* pciconfig: alpha, arm, arm64, ia64, sparc */
1053asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
1054 unsigned long off, unsigned long len,
1055 void __user *buf);
1056asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
1057 unsigned long off, unsigned long len,
1058 void __user *buf);
1059asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
1060
1061/* powerpc */
1062asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
1063 __u32 __user *ustatus);
1064asmlinkage long sys_spu_create(const char __user *name,
1065 unsigned int flags, umode_t mode, int fd);
1066
1067
1068/*
1069 * Deprecated system calls which are still defined in
1070 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
1071 */
1072
1073/* __ARCH_WANT_SYSCALL_NO_AT */
1074asmlinkage long sys_open(const char __user *filename,
1075 int flags, umode_t mode);
1076asmlinkage long sys_link(const char __user *oldname,
1077 const char __user *newname);
1078asmlinkage long sys_unlink(const char __user *pathname);
1079asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
1080 unsigned dev);
1081asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
1082asmlinkage long sys_chown(const char __user *filename,
1083 uid_t user, gid_t group);
1084asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
1085asmlinkage long sys_rmdir(const char __user *pathname);
1086asmlinkage long sys_lchown(const char __user *filename,
1087 uid_t user, gid_t group);
1088asmlinkage long sys_access(const char __user *filename, int mode);
1089asmlinkage long sys_rename(const char __user *oldname,
1090 const char __user *newname);
1091asmlinkage long sys_symlink(const char __user *old, const char __user *new);
1092#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
1093asmlinkage long sys_stat64(const char __user *filename,
1094 struct stat64 __user *statbuf);
1095asmlinkage long sys_lstat64(const char __user *filename,
1096 struct stat64 __user *statbuf);
1097#endif
1098
1099/* __ARCH_WANT_SYSCALL_NO_FLAGS */
1100asmlinkage long sys_pipe(int __user *fildes);
1101asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
1102asmlinkage long sys_epoll_create(int size);
1103asmlinkage long sys_inotify_init(void);
1104asmlinkage long sys_eventfd(unsigned int count);
1105asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
1106
1107/* __ARCH_WANT_SYSCALL_OFF_T */
1108asmlinkage long sys_sendfile(int out_fd, int in_fd,
1109 off_t __user *offset, size_t count);
1110asmlinkage long sys_newstat(const char __user *filename,
1111 struct stat __user *statbuf);
1112asmlinkage long sys_newlstat(const char __user *filename,
1113 struct stat __user *statbuf);
1114asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
1115
1116/* __ARCH_WANT_SYSCALL_DEPRECATED */
1117asmlinkage long sys_alarm(unsigned int seconds);
1118asmlinkage long sys_getpgrp(void);
1119asmlinkage long sys_pause(void);
1120asmlinkage long sys_time(__kernel_old_time_t __user *tloc);
1121asmlinkage long sys_time32(old_time32_t __user *tloc);
1122#ifdef __ARCH_WANT_SYS_UTIME
1123asmlinkage long sys_utime(char __user *filename,
1124 struct utimbuf __user *times);
1125asmlinkage long sys_utimes(char __user *filename,
1126 struct __kernel_old_timeval __user *utimes);
1127asmlinkage long sys_futimesat(int dfd, const char __user *filename,
1128 struct __kernel_old_timeval __user *utimes);
1129#endif
1130asmlinkage long sys_futimesat_time32(unsigned int dfd,
1131 const char __user *filename,
1132 struct old_timeval32 __user *t);
1133asmlinkage long sys_utime32(const char __user *filename,
1134 struct old_utimbuf32 __user *t);
1135asmlinkage long sys_utimes_time32(const char __user *filename,
1136 struct old_timeval32 __user *t);
1137asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
1138asmlinkage long sys_getdents(unsigned int fd,
1139 struct linux_dirent __user *dirent,
1140 unsigned int count);
1141asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
1142 fd_set __user *exp, struct __kernel_old_timeval __user *tvp);
1143asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
1144 int timeout);
1145asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1146 int maxevents, int timeout);
1147asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1148asmlinkage long sys_vfork(void);
1149asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1150asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1151asmlinkage long sys_bdflush(int func, long data);
1152asmlinkage long sys_oldumount(char __user *name);
1153asmlinkage long sys_uselib(const char __user *library);
1154asmlinkage long sys_sysfs(int option,
1155 unsigned long arg1, unsigned long arg2);
1156asmlinkage long sys_fork(void);
1157
1158/* obsolete: kernel/time/time.c */
1159asmlinkage long sys_stime(__kernel_old_time_t __user *tptr);
1160asmlinkage long sys_stime32(old_time32_t __user *tptr);
1161
1162/* obsolete: kernel/signal.c */
1163asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1164asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1165 old_sigset_t __user *oset);
1166#ifdef CONFIG_OLD_SIGSUSPEND
1167asmlinkage long sys_sigsuspend(old_sigset_t mask);
1168#endif
1169
1170#ifdef CONFIG_OLD_SIGSUSPEND3
1171asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1172#endif
1173
1174#ifdef CONFIG_OLD_SIGACTION
1175asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1176 struct old_sigaction __user *);
1177#endif
1178asmlinkage long sys_sgetmask(void);
1179asmlinkage long sys_ssetmask(int newmask);
1180asmlinkage long sys_signal(int sig, __sighandler_t handler);
1181
1182/* obsolete: kernel/sched/core.c */
1183asmlinkage long sys_nice(int increment);
1184
1185/* obsolete: kernel/kexec_file.c */
1186asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1187 unsigned long cmdline_len,
1188 const char __user *cmdline_ptr,
1189 unsigned long flags);
1190
1191/* obsolete: kernel/exit.c */
1192asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1193
1194/* obsolete: kernel/uid16.c */
1195#ifdef CONFIG_HAVE_UID16
1196asmlinkage long sys_chown16(const char __user *filename,
1197 old_uid_t user, old_gid_t group);
1198asmlinkage long sys_lchown16(const char __user *filename,
1199 old_uid_t user, old_gid_t group);
1200asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1201asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1202asmlinkage long sys_setgid16(old_gid_t gid);
1203asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1204asmlinkage long sys_setuid16(old_uid_t uid);
1205asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1206asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1207 old_uid_t __user *euid, old_uid_t __user *suid);
1208asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1209asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1210 old_gid_t __user *egid, old_gid_t __user *sgid);
1211asmlinkage long sys_setfsuid16(old_uid_t uid);
1212asmlinkage long sys_setfsgid16(old_gid_t gid);
1213asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1214asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1215asmlinkage long sys_getuid16(void);
1216asmlinkage long sys_geteuid16(void);
1217asmlinkage long sys_getgid16(void);
1218asmlinkage long sys_getegid16(void);
1219#endif
1220
1221/* obsolete: net/socket.c */
1222asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1223
1224/* obsolete: fs/stat.c */
1225asmlinkage long sys_stat(const char __user *filename,
1226 struct __old_kernel_stat __user *statbuf);
1227asmlinkage long sys_lstat(const char __user *filename,
1228 struct __old_kernel_stat __user *statbuf);
1229asmlinkage long sys_fstat(unsigned int fd,
1230 struct __old_kernel_stat __user *statbuf);
1231asmlinkage long sys_readlink(const char __user *path,
1232 char __user *buf, int bufsiz);
1233
1234/* obsolete: fs/select.c */
1235asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1236
1237/* obsolete: fs/readdir.c */
1238asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1239
1240/* obsolete: kernel/sys.c */
1241asmlinkage long sys_gethostname(char __user *name, int len);
1242asmlinkage long sys_uname(struct old_utsname __user *);
1243asmlinkage long sys_olduname(struct oldold_utsname __user *);
1244#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1245asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1246#endif
1247
1248/* obsolete: ipc */
1249asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1250 unsigned long third, void __user *ptr, long fifth);
1251
1252/* obsolete: mm/ */
1253asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1254 unsigned long prot, unsigned long flags,
1255 unsigned long fd, unsigned long pgoff);
1256asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1257
1258
1259/*
1260 * Not a real system call, but a placeholder for syscalls which are
1261 * not implemented -- see kernel/sys_ni.c
1262 */
1263asmlinkage long sys_ni_syscall(void);
1264
1265#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1266
1267
1268/*
1269 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1270 * Instead, use one of the functions which work equivalently, such as
1271 * the ksys_xyzyyz() functions prototyped below.
1272 */
1273ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1274int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1275ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1276void ksys_sync(void);
1277int ksys_unshare(unsigned long unshare_flags);
1278int ksys_setsid(void);
1279int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1280 unsigned int flags);
1281ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1282 loff_t pos);
1283ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1284 size_t count, loff_t pos);
1285int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1286#ifdef CONFIG_ADVISE_SYSCALLS
1287int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1288#else
1289static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1290 int advice)
1291{
1292 return -EINVAL;
1293}
1294#endif
1295unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1296 unsigned long prot, unsigned long flags,
1297 unsigned long fd, unsigned long pgoff);
1298ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1299int ksys_ipc(unsigned int call, int first, unsigned long second,
1300 unsigned long third, void __user * ptr, long fifth);
1301int compat_ksys_ipc(u32 call, int first, int second,
1302 u32 third, u32 ptr, u32 fifth);
1303
1304/*
1305 * The following kernel syscall equivalents are just wrappers to fs-internal
1306 * functions. Therefore, provide stubs to be inlined at the callsites.
1307 */
1308extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1309 gid_t group, int flag);
1310
1311static inline long ksys_chown(const char __user *filename, uid_t user,
1312 gid_t group)
1313{
1314 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1315}
1316
1317static inline long ksys_lchown(const char __user *filename, uid_t user,
1318 gid_t group)
1319{
1320 return do_fchownat(AT_FDCWD, filename, user, group,
1321 AT_SYMLINK_NOFOLLOW);
1322}
1323
1324extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1325
1326static inline long ksys_ftruncate(unsigned int fd, loff_t length)
1327{
1328 return do_sys_ftruncate(fd, length, 1);
1329}
1330
1331extern long do_sys_truncate(const char __user *pathname, loff_t length);
1332
1333static inline long ksys_truncate(const char __user *pathname, loff_t length)
1334{
1335 return do_sys_truncate(pathname, length);
1336}
1337
1338static inline unsigned int ksys_personality(unsigned int personality)
1339{
1340 unsigned int old = current->personality;
1341
1342 if (personality != 0xffffffff)
1343 set_personality(personality);
1344
1345 return old;
1346}
1347
1348/* for __ARCH_WANT_SYS_IPC */
1349long ksys_semtimedop(int semid, struct sembuf __user *tsops,
1350 unsigned int nsops,
1351 const struct __kernel_timespec __user *timeout);
1352long ksys_semget(key_t key, int nsems, int semflg);
1353long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
1354long ksys_msgget(key_t key, int msgflg);
1355long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
1356long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1357 long msgtyp, int msgflg);
1358long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1359 int msgflg);
1360long ksys_shmget(key_t key, size_t size, int shmflg);
1361long ksys_shmdt(char __user *shmaddr);
1362long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
1363long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
1364 unsigned int nsops,
1365 const struct old_timespec32 __user *timeout);
1366
1367int __sys_getsockopt(int fd, int level, int optname, char __user *optval,
1368 int __user *optlen);
1369int __sys_setsockopt(int fd, int level, int optname, char __user *optval,
1370 int optlen);
1371#endif