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