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1/*
2 * syscalls.h - Linux syscall interfaces (non-arch-specific)
3 *
4 * Copyright (c) 2004 Randy Dunlap
5 * Copyright (c) 2004 Open Source Development Labs
6 *
7 * This file is released under the GPLv2.
8 * See the file COPYING for more details.
9 */
10
11#ifndef _LINUX_SYSCALLS_H
12#define _LINUX_SYSCALLS_H
13
14struct __aio_sigset;
15struct epoll_event;
16struct iattr;
17struct inode;
18struct iocb;
19struct io_event;
20struct iovec;
21struct itimerspec;
22struct itimerval;
23struct kexec_segment;
24struct linux_dirent;
25struct linux_dirent64;
26struct list_head;
27struct mmap_arg_struct;
28struct msgbuf;
29struct user_msghdr;
30struct mmsghdr;
31struct msqid_ds;
32struct new_utsname;
33struct nfsctl_arg;
34struct __old_kernel_stat;
35struct oldold_utsname;
36struct old_utsname;
37struct pollfd;
38struct rlimit;
39struct rlimit64;
40struct rusage;
41struct sched_param;
42struct sched_attr;
43struct sel_arg_struct;
44struct semaphore;
45struct sembuf;
46struct shmid_ds;
47struct sockaddr;
48struct stat;
49struct stat64;
50struct statfs;
51struct statfs64;
52struct statx;
53struct __sysctl_args;
54struct sysinfo;
55struct timespec;
56struct timeval;
57struct timex;
58struct timezone;
59struct tms;
60struct utimbuf;
61struct mq_attr;
62struct compat_stat;
63struct old_timeval32;
64struct robust_list_head;
65struct getcpu_cache;
66struct old_linux_dirent;
67struct perf_event_attr;
68struct file_handle;
69struct sigaltstack;
70struct rseq;
71union bpf_attr;
72
73#include <linux/types.h>
74#include <linux/aio_abi.h>
75#include <linux/capability.h>
76#include <linux/signal.h>
77#include <linux/list.h>
78#include <linux/bug.h>
79#include <linux/sem.h>
80#include <asm/siginfo.h>
81#include <linux/unistd.h>
82#include <linux/quota.h>
83#include <linux/key.h>
84#include <linux/personality.h>
85#include <trace/syscall.h>
86
87#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
88/*
89 * It may be useful for an architecture to override the definitions of the
90 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a
91 * different calling convention for syscalls. To allow for that, the prototypes
92 * for the sys_*() functions below will *not* be included if
93 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
94 */
95#include <asm/syscall_wrapper.h>
96#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
97
98/*
99 * __MAP - apply a macro to syscall arguments
100 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
101 * m(t1, a1), m(t2, a2), ..., m(tn, an)
102 * The first argument must be equal to the amount of type/name
103 * pairs given. Note that this list of pairs (i.e. the arguments
104 * of __MAP starting at the third one) is in the same format as
105 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
106 */
107#define __MAP0(m,...)
108#define __MAP1(m,t,a,...) m(t,a)
109#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
110#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
111#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
112#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
113#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
114#define __MAP(n,...) __MAP##n(__VA_ARGS__)
115
116#define __SC_DECL(t, a) t a
117#define __TYPE_AS(t, v) __same_type((__force t)0, v)
118#define __TYPE_IS_L(t) (__TYPE_AS(t, 0L))
119#define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL))
120#define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL))
121#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
122#define __SC_CAST(t, a) (__force t) a
123#define __SC_ARGS(t, a) a
124#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
125
126#ifdef CONFIG_FTRACE_SYSCALLS
127#define __SC_STR_ADECL(t, a) #a
128#define __SC_STR_TDECL(t, a) #t
129
130extern struct trace_event_class event_class_syscall_enter;
131extern struct trace_event_class event_class_syscall_exit;
132extern struct trace_event_functions enter_syscall_print_funcs;
133extern struct trace_event_functions exit_syscall_print_funcs;
134
135#define SYSCALL_TRACE_ENTER_EVENT(sname) \
136 static struct syscall_metadata __syscall_meta_##sname; \
137 static struct trace_event_call __used \
138 event_enter_##sname = { \
139 .class = &event_class_syscall_enter, \
140 { \
141 .name = "sys_enter"#sname, \
142 }, \
143 .event.funcs = &enter_syscall_print_funcs, \
144 .data = (void *)&__syscall_meta_##sname,\
145 .flags = TRACE_EVENT_FL_CAP_ANY, \
146 }; \
147 static struct trace_event_call __used \
148 __attribute__((section("_ftrace_events"))) \
149 *__event_enter_##sname = &event_enter_##sname;
150
151#define SYSCALL_TRACE_EXIT_EVENT(sname) \
152 static struct syscall_metadata __syscall_meta_##sname; \
153 static struct trace_event_call __used \
154 event_exit_##sname = { \
155 .class = &event_class_syscall_exit, \
156 { \
157 .name = "sys_exit"#sname, \
158 }, \
159 .event.funcs = &exit_syscall_print_funcs, \
160 .data = (void *)&__syscall_meta_##sname,\
161 .flags = TRACE_EVENT_FL_CAP_ANY, \
162 }; \
163 static struct trace_event_call __used \
164 __attribute__((section("_ftrace_events"))) \
165 *__event_exit_##sname = &event_exit_##sname;
166
167#define SYSCALL_METADATA(sname, nb, ...) \
168 static const char *types_##sname[] = { \
169 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \
170 }; \
171 static const char *args_##sname[] = { \
172 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \
173 }; \
174 SYSCALL_TRACE_ENTER_EVENT(sname); \
175 SYSCALL_TRACE_EXIT_EVENT(sname); \
176 static struct syscall_metadata __used \
177 __syscall_meta_##sname = { \
178 .name = "sys"#sname, \
179 .syscall_nr = -1, /* Filled in at boot */ \
180 .nb_args = nb, \
181 .types = nb ? types_##sname : NULL, \
182 .args = nb ? args_##sname : NULL, \
183 .enter_event = &event_enter_##sname, \
184 .exit_event = &event_exit_##sname, \
185 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
186 }; \
187 static struct syscall_metadata __used \
188 __attribute__((section("__syscalls_metadata"))) \
189 *__p_syscall_meta_##sname = &__syscall_meta_##sname;
190
191static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
192{
193 return tp_event->class == &event_class_syscall_enter ||
194 tp_event->class == &event_class_syscall_exit;
195}
196
197#else
198#define SYSCALL_METADATA(sname, nb, ...)
199
200static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
201{
202 return 0;
203}
204#endif
205
206#ifndef SYSCALL_DEFINE0
207#define SYSCALL_DEFINE0(sname) \
208 SYSCALL_METADATA(_##sname, 0); \
209 asmlinkage long sys_##sname(void); \
210 ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \
211 asmlinkage long sys_##sname(void)
212#endif /* SYSCALL_DEFINE0 */
213
214#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
215#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
216#define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
217#define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
218#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
219#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
220
221#define SYSCALL_DEFINE_MAXARGS 6
222
223#define SYSCALL_DEFINEx(x, sname, ...) \
224 SYSCALL_METADATA(sname, x, __VA_ARGS__) \
225 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
226
227#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
228
229/*
230 * The asmlinkage stub is aliased to a function named __se_sys_*() which
231 * sign-extends 32-bit ints to longs whenever needed. The actual work is
232 * done within __do_sys_*().
233 */
234#ifndef __SYSCALL_DEFINEx
235#define __SYSCALL_DEFINEx(x, name, ...) \
236 __diag_push(); \
237 __diag_ignore(GCC, 8, "-Wattribute-alias", \
238 "Type aliasing is used to sanitize syscall arguments");\
239 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
240 __attribute__((alias(__stringify(__se_sys##name)))); \
241 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \
242 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
243 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
244 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
245 { \
246 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
247 __MAP(x,__SC_TEST,__VA_ARGS__); \
248 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
249 return ret; \
250 } \
251 __diag_pop(); \
252 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
253#endif /* __SYSCALL_DEFINEx */
254
255/*
256 * Called before coming back to user-mode. Returning to user-mode with an
257 * address limit different than USER_DS can allow to overwrite kernel memory.
258 */
259static inline void addr_limit_user_check(void)
260{
261#ifdef TIF_FSCHECK
262 if (!test_thread_flag(TIF_FSCHECK))
263 return;
264#endif
265
266 if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
267 "Invalid address limit on user-mode return"))
268 force_sig(SIGKILL, current);
269
270#ifdef TIF_FSCHECK
271 clear_thread_flag(TIF_FSCHECK);
272#endif
273}
274
275/*
276 * These syscall function prototypes are kept in the same order as
277 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below,
278 * followed by deprecated or obsolete system calls.
279 *
280 * Please note that these prototypes here are only provided for information
281 * purposes, for static analysis, and for linking from the syscall table.
282 * These functions should not be called elsewhere from kernel code.
283 *
284 * As the syscall calling convention may be different from the default
285 * for architectures overriding the syscall calling convention, do not
286 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
287 */
288#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
289asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
290asmlinkage long sys_io_destroy(aio_context_t ctx);
291asmlinkage long sys_io_submit(aio_context_t, long,
292 struct iocb __user * __user *);
293asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
294 struct io_event __user *result);
295asmlinkage long sys_io_getevents(aio_context_t ctx_id,
296 long min_nr,
297 long nr,
298 struct io_event __user *events,
299 struct __kernel_timespec __user *timeout);
300asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
301 long min_nr,
302 long nr,
303 struct io_event __user *events,
304 struct __kernel_timespec __user *timeout,
305 const struct __aio_sigset *sig);
306asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
307 long min_nr,
308 long nr,
309 struct io_event __user *events,
310 struct old_timespec32 __user *timeout,
311 const struct __aio_sigset *sig);
312
313/* fs/xattr.c */
314asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
315 const void __user *value, size_t size, int flags);
316asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
317 const void __user *value, size_t size, int flags);
318asmlinkage long sys_fsetxattr(int fd, const char __user *name,
319 const void __user *value, size_t size, int flags);
320asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
321 void __user *value, size_t size);
322asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
323 void __user *value, size_t size);
324asmlinkage long sys_fgetxattr(int fd, const char __user *name,
325 void __user *value, size_t size);
326asmlinkage long sys_listxattr(const char __user *path, char __user *list,
327 size_t size);
328asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
329 size_t size);
330asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
331asmlinkage long sys_removexattr(const char __user *path,
332 const char __user *name);
333asmlinkage long sys_lremovexattr(const char __user *path,
334 const char __user *name);
335asmlinkage long sys_fremovexattr(int fd, const char __user *name);
336
337/* fs/dcache.c */
338asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
339
340/* fs/cookies.c */
341asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
342
343/* fs/eventfd.c */
344asmlinkage long sys_eventfd2(unsigned int count, int flags);
345
346/* fs/eventpoll.c */
347asmlinkage long sys_epoll_create1(int flags);
348asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
349 struct epoll_event __user *event);
350asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
351 int maxevents, int timeout,
352 const sigset_t __user *sigmask,
353 size_t sigsetsize);
354
355/* fs/fcntl.c */
356asmlinkage long sys_dup(unsigned int fildes);
357asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
358asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
359#if BITS_PER_LONG == 32
360asmlinkage long sys_fcntl64(unsigned int fd,
361 unsigned int cmd, unsigned long arg);
362#endif
363
364/* fs/inotify_user.c */
365asmlinkage long sys_inotify_init1(int flags);
366asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
367 u32 mask);
368asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
369
370/* fs/ioctl.c */
371asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
372 unsigned long arg);
373
374/* fs/ioprio.c */
375asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
376asmlinkage long sys_ioprio_get(int which, int who);
377
378/* fs/locks.c */
379asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
380
381/* fs/namei.c */
382asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
383 unsigned dev);
384asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
385asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
386asmlinkage long sys_symlinkat(const char __user * oldname,
387 int newdfd, const char __user * newname);
388asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
389 int newdfd, const char __user *newname, int flags);
390asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
391 int newdfd, const char __user * newname);
392
393/* fs/namespace.c */
394asmlinkage long sys_umount(char __user *name, int flags);
395asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
396 char __user *type, unsigned long flags,
397 void __user *data);
398asmlinkage long sys_pivot_root(const char __user *new_root,
399 const char __user *put_old);
400
401/* fs/nfsctl.c */
402
403/* fs/open.c */
404asmlinkage long sys_statfs(const char __user * path,
405 struct statfs __user *buf);
406asmlinkage long sys_statfs64(const char __user *path, size_t sz,
407 struct statfs64 __user *buf);
408asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
409asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
410 struct statfs64 __user *buf);
411asmlinkage long sys_truncate(const char __user *path, long length);
412asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
413#if BITS_PER_LONG == 32
414asmlinkage long sys_truncate64(const char __user *path, loff_t length);
415asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
416#endif
417asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
418asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
419asmlinkage long sys_chdir(const char __user *filename);
420asmlinkage long sys_fchdir(unsigned int fd);
421asmlinkage long sys_chroot(const char __user *filename);
422asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
423asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
424 umode_t mode);
425asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
426 gid_t group, int flag);
427asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
428asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
429 umode_t mode);
430asmlinkage long sys_close(unsigned int fd);
431asmlinkage long sys_vhangup(void);
432
433/* fs/pipe.c */
434asmlinkage long sys_pipe2(int __user *fildes, int flags);
435
436/* fs/quota.c */
437asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
438 qid_t id, void __user *addr);
439
440/* fs/readdir.c */
441asmlinkage long sys_getdents64(unsigned int fd,
442 struct linux_dirent64 __user *dirent,
443 unsigned int count);
444
445/* fs/read_write.c */
446asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
447 unsigned long offset_low, loff_t __user *result,
448 unsigned int whence);
449asmlinkage long sys_lseek(unsigned int fd, off_t offset,
450 unsigned int whence);
451asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
452asmlinkage long sys_write(unsigned int fd, const char __user *buf,
453 size_t count);
454asmlinkage long sys_readv(unsigned long fd,
455 const struct iovec __user *vec,
456 unsigned long vlen);
457asmlinkage long sys_writev(unsigned long fd,
458 const struct iovec __user *vec,
459 unsigned long vlen);
460asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
461 size_t count, loff_t pos);
462asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
463 size_t count, loff_t pos);
464asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
465 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
466asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
467 unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
468
469/* fs/sendfile.c */
470asmlinkage long sys_sendfile64(int out_fd, int in_fd,
471 loff_t __user *offset, size_t count);
472
473/* fs/select.c */
474asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
475 fd_set __user *, struct __kernel_timespec __user *,
476 void __user *);
477asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
478 fd_set __user *, struct old_timespec32 __user *,
479 void __user *);
480asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
481 struct __kernel_timespec __user *, const sigset_t __user *,
482 size_t);
483asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
484 struct old_timespec32 __user *, const sigset_t __user *,
485 size_t);
486
487/* fs/signalfd.c */
488asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
489
490/* fs/splice.c */
491asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
492 unsigned long nr_segs, unsigned int flags);
493asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
494 int fd_out, loff_t __user *off_out,
495 size_t len, unsigned int flags);
496asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
497
498/* fs/stat.c */
499asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
500 int bufsiz);
501asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
502 struct stat __user *statbuf, int flag);
503asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
504#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
505asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
506asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
507 struct stat64 __user *statbuf, int flag);
508#endif
509
510/* fs/sync.c */
511asmlinkage long sys_sync(void);
512asmlinkage long sys_fsync(unsigned int fd);
513asmlinkage long sys_fdatasync(unsigned int fd);
514asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
515 loff_t offset, loff_t nbytes);
516asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
517 unsigned int flags);
518
519/* fs/timerfd.c */
520asmlinkage long sys_timerfd_create(int clockid, int flags);
521asmlinkage long sys_timerfd_settime(int ufd, int flags,
522 const struct __kernel_itimerspec __user *utmr,
523 struct __kernel_itimerspec __user *otmr);
524asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
525
526/* fs/utimes.c */
527asmlinkage long sys_utimensat(int dfd, const char __user *filename,
528 struct __kernel_timespec __user *utimes,
529 int flags);
530
531/* kernel/acct.c */
532asmlinkage long sys_acct(const char __user *name);
533
534/* kernel/capability.c */
535asmlinkage long sys_capget(cap_user_header_t header,
536 cap_user_data_t dataptr);
537asmlinkage long sys_capset(cap_user_header_t header,
538 const cap_user_data_t data);
539
540/* kernel/exec_domain.c */
541asmlinkage long sys_personality(unsigned int personality);
542
543/* kernel/exit.c */
544asmlinkage long sys_exit(int error_code);
545asmlinkage long sys_exit_group(int error_code);
546asmlinkage long sys_waitid(int which, pid_t pid,
547 struct siginfo __user *infop,
548 int options, struct rusage __user *ru);
549
550/* kernel/fork.c */
551asmlinkage long sys_set_tid_address(int __user *tidptr);
552asmlinkage long sys_unshare(unsigned long unshare_flags);
553
554/* kernel/futex.c */
555asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
556 struct __kernel_timespec __user *utime, u32 __user *uaddr2,
557 u32 val3);
558asmlinkage long sys_get_robust_list(int pid,
559 struct robust_list_head __user * __user *head_ptr,
560 size_t __user *len_ptr);
561asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
562 size_t len);
563
564/* kernel/hrtimer.c */
565asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
566 struct __kernel_timespec __user *rmtp);
567
568/* kernel/itimer.c */
569asmlinkage long sys_getitimer(int which, struct itimerval __user *value);
570asmlinkage long sys_setitimer(int which,
571 struct itimerval __user *value,
572 struct itimerval __user *ovalue);
573
574/* kernel/kexec.c */
575asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
576 struct kexec_segment __user *segments,
577 unsigned long flags);
578
579/* kernel/module.c */
580asmlinkage long sys_init_module(void __user *umod, unsigned long len,
581 const char __user *uargs);
582asmlinkage long sys_delete_module(const char __user *name_user,
583 unsigned int flags);
584
585/* kernel/posix-timers.c */
586asmlinkage long sys_timer_create(clockid_t which_clock,
587 struct sigevent __user *timer_event_spec,
588 timer_t __user * created_timer_id);
589asmlinkage long sys_timer_gettime(timer_t timer_id,
590 struct __kernel_itimerspec __user *setting);
591asmlinkage long sys_timer_getoverrun(timer_t timer_id);
592asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
593 const struct __kernel_itimerspec __user *new_setting,
594 struct itimerspec __user *old_setting);
595asmlinkage long sys_timer_delete(timer_t timer_id);
596asmlinkage long sys_clock_settime(clockid_t which_clock,
597 const struct __kernel_timespec __user *tp);
598asmlinkage long sys_clock_gettime(clockid_t which_clock,
599 struct __kernel_timespec __user *tp);
600asmlinkage long sys_clock_getres(clockid_t which_clock,
601 struct __kernel_timespec __user *tp);
602asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
603 const struct __kernel_timespec __user *rqtp,
604 struct __kernel_timespec __user *rmtp);
605
606/* kernel/printk.c */
607asmlinkage long sys_syslog(int type, char __user *buf, int len);
608
609/* kernel/ptrace.c */
610asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
611 unsigned long data);
612/* kernel/sched/core.c */
613
614asmlinkage long sys_sched_setparam(pid_t pid,
615 struct sched_param __user *param);
616asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
617 struct sched_param __user *param);
618asmlinkage long sys_sched_getscheduler(pid_t pid);
619asmlinkage long sys_sched_getparam(pid_t pid,
620 struct sched_param __user *param);
621asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
622 unsigned long __user *user_mask_ptr);
623asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
624 unsigned long __user *user_mask_ptr);
625asmlinkage long sys_sched_yield(void);
626asmlinkage long sys_sched_get_priority_max(int policy);
627asmlinkage long sys_sched_get_priority_min(int policy);
628asmlinkage long sys_sched_rr_get_interval(pid_t pid,
629 struct __kernel_timespec __user *interval);
630
631/* kernel/signal.c */
632asmlinkage long sys_restart_syscall(void);
633asmlinkage long sys_kill(pid_t pid, int sig);
634asmlinkage long sys_tkill(pid_t pid, int sig);
635asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
636asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
637 struct sigaltstack __user *uoss);
638asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
639#ifndef CONFIG_ODD_RT_SIGACTION
640asmlinkage long sys_rt_sigaction(int,
641 const struct sigaction __user *,
642 struct sigaction __user *,
643 size_t);
644#endif
645asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
646 sigset_t __user *oset, size_t sigsetsize);
647asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
648asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
649 siginfo_t __user *uinfo,
650 const struct __kernel_timespec __user *uts,
651 size_t sigsetsize);
652asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
653 siginfo_t __user *uinfo,
654 const struct old_timespec32 __user *uts,
655 size_t sigsetsize);
656asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
657
658/* kernel/sys.c */
659asmlinkage long sys_setpriority(int which, int who, int niceval);
660asmlinkage long sys_getpriority(int which, int who);
661asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
662 void __user *arg);
663asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
664asmlinkage long sys_setgid(gid_t gid);
665asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
666asmlinkage long sys_setuid(uid_t uid);
667asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
668asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
669asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
670asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
671asmlinkage long sys_setfsuid(uid_t uid);
672asmlinkage long sys_setfsgid(gid_t gid);
673asmlinkage long sys_times(struct tms __user *tbuf);
674asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
675asmlinkage long sys_getpgid(pid_t pid);
676asmlinkage long sys_getsid(pid_t pid);
677asmlinkage long sys_setsid(void);
678asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
679asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
680asmlinkage long sys_newuname(struct new_utsname __user *name);
681asmlinkage long sys_sethostname(char __user *name, int len);
682asmlinkage long sys_setdomainname(char __user *name, int len);
683asmlinkage long sys_getrlimit(unsigned int resource,
684 struct rlimit __user *rlim);
685asmlinkage long sys_setrlimit(unsigned int resource,
686 struct rlimit __user *rlim);
687asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
688asmlinkage long sys_umask(int mask);
689asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
690 unsigned long arg4, unsigned long arg5);
691asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
692
693/* kernel/time.c */
694asmlinkage long sys_gettimeofday(struct timeval __user *tv,
695 struct timezone __user *tz);
696asmlinkage long sys_settimeofday(struct timeval __user *tv,
697 struct timezone __user *tz);
698asmlinkage long sys_adjtimex(struct timex __user *txc_p);
699
700/* kernel/timer.c */
701asmlinkage long sys_getpid(void);
702asmlinkage long sys_getppid(void);
703asmlinkage long sys_getuid(void);
704asmlinkage long sys_geteuid(void);
705asmlinkage long sys_getgid(void);
706asmlinkage long sys_getegid(void);
707asmlinkage long sys_gettid(void);
708asmlinkage long sys_sysinfo(struct sysinfo __user *info);
709
710/* ipc/mqueue.c */
711asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
712asmlinkage long sys_mq_unlink(const char __user *name);
713asmlinkage 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);
714asmlinkage 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);
715asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
716asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
717
718/* ipc/msg.c */
719asmlinkage long sys_msgget(key_t key, int msgflg);
720asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
721asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
722 size_t msgsz, long msgtyp, int msgflg);
723asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
724 size_t msgsz, int msgflg);
725
726/* ipc/sem.c */
727asmlinkage long sys_semget(key_t key, int nsems, int semflg);
728asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
729asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
730 unsigned nsops,
731 const struct __kernel_timespec __user *timeout);
732asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
733 unsigned nsops);
734
735/* ipc/shm.c */
736asmlinkage long sys_shmget(key_t key, size_t size, int flag);
737asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
738asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
739asmlinkage long sys_shmdt(char __user *shmaddr);
740
741/* net/socket.c */
742asmlinkage long sys_socket(int, int, int);
743asmlinkage long sys_socketpair(int, int, int, int __user *);
744asmlinkage long sys_bind(int, struct sockaddr __user *, int);
745asmlinkage long sys_listen(int, int);
746asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
747asmlinkage long sys_connect(int, struct sockaddr __user *, int);
748asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
749asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
750asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
751 struct sockaddr __user *, int);
752asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
753 struct sockaddr __user *, int __user *);
754asmlinkage long sys_setsockopt(int fd, int level, int optname,
755 char __user *optval, int optlen);
756asmlinkage long sys_getsockopt(int fd, int level, int optname,
757 char __user *optval, int __user *optlen);
758asmlinkage long sys_shutdown(int, int);
759asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
760asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
761
762/* mm/filemap.c */
763asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
764
765/* mm/nommu.c, also with MMU */
766asmlinkage long sys_brk(unsigned long brk);
767asmlinkage long sys_munmap(unsigned long addr, size_t len);
768asmlinkage long sys_mremap(unsigned long addr,
769 unsigned long old_len, unsigned long new_len,
770 unsigned long flags, unsigned long new_addr);
771
772/* security/keys/keyctl.c */
773asmlinkage long sys_add_key(const char __user *_type,
774 const char __user *_description,
775 const void __user *_payload,
776 size_t plen,
777 key_serial_t destringid);
778asmlinkage long sys_request_key(const char __user *_type,
779 const char __user *_description,
780 const char __user *_callout_info,
781 key_serial_t destringid);
782asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
783 unsigned long arg4, unsigned long arg5);
784
785/* arch/example/kernel/sys_example.c */
786#ifdef CONFIG_CLONE_BACKWARDS
787asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
788 int __user *);
789#else
790#ifdef CONFIG_CLONE_BACKWARDS3
791asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
792 int __user *, unsigned long);
793#else
794asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
795 int __user *, unsigned long);
796#endif
797#endif
798asmlinkage long sys_execve(const char __user *filename,
799 const char __user *const __user *argv,
800 const char __user *const __user *envp);
801
802/* mm/fadvise.c */
803asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
804
805/* mm/, CONFIG_MMU only */
806asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
807asmlinkage long sys_swapoff(const char __user *specialfile);
808asmlinkage long sys_mprotect(unsigned long start, size_t len,
809 unsigned long prot);
810asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
811asmlinkage long sys_mlock(unsigned long start, size_t len);
812asmlinkage long sys_munlock(unsigned long start, size_t len);
813asmlinkage long sys_mlockall(int flags);
814asmlinkage long sys_munlockall(void);
815asmlinkage long sys_mincore(unsigned long start, size_t len,
816 unsigned char __user * vec);
817asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
818asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
819 unsigned long prot, unsigned long pgoff,
820 unsigned long flags);
821asmlinkage long sys_mbind(unsigned long start, unsigned long len,
822 unsigned long mode,
823 const unsigned long __user *nmask,
824 unsigned long maxnode,
825 unsigned flags);
826asmlinkage long sys_get_mempolicy(int __user *policy,
827 unsigned long __user *nmask,
828 unsigned long maxnode,
829 unsigned long addr, unsigned long flags);
830asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
831 unsigned long maxnode);
832asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
833 const unsigned long __user *from,
834 const unsigned long __user *to);
835asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
836 const void __user * __user *pages,
837 const int __user *nodes,
838 int __user *status,
839 int flags);
840
841asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
842 siginfo_t __user *uinfo);
843asmlinkage long sys_perf_event_open(
844 struct perf_event_attr __user *attr_uptr,
845 pid_t pid, int cpu, int group_fd, unsigned long flags);
846asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
847asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
848 unsigned int vlen, unsigned flags,
849 struct __kernel_timespec __user *timeout);
850asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
851 unsigned int vlen, unsigned flags,
852 struct old_timespec32 __user *timeout);
853
854asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
855 int options, struct rusage __user *ru);
856asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
857 const struct rlimit64 __user *new_rlim,
858 struct rlimit64 __user *old_rlim);
859asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
860asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
861 u64 mask, int fd,
862 const char __user *pathname);
863asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
864 struct file_handle __user *handle,
865 int __user *mnt_id, int flag);
866asmlinkage long sys_open_by_handle_at(int mountdirfd,
867 struct file_handle __user *handle,
868 int flags);
869asmlinkage long sys_clock_adjtime(clockid_t which_clock,
870 struct timex __user *tx);
871asmlinkage long sys_syncfs(int fd);
872asmlinkage long sys_setns(int fd, int nstype);
873asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
874 unsigned int vlen, unsigned flags);
875asmlinkage long sys_process_vm_readv(pid_t pid,
876 const struct iovec __user *lvec,
877 unsigned long liovcnt,
878 const struct iovec __user *rvec,
879 unsigned long riovcnt,
880 unsigned long flags);
881asmlinkage long sys_process_vm_writev(pid_t pid,
882 const struct iovec __user *lvec,
883 unsigned long liovcnt,
884 const struct iovec __user *rvec,
885 unsigned long riovcnt,
886 unsigned long flags);
887asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
888 unsigned long idx1, unsigned long idx2);
889asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
890asmlinkage long sys_sched_setattr(pid_t pid,
891 struct sched_attr __user *attr,
892 unsigned int flags);
893asmlinkage long sys_sched_getattr(pid_t pid,
894 struct sched_attr __user *attr,
895 unsigned int size,
896 unsigned int flags);
897asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
898 int newdfd, const char __user *newname,
899 unsigned int flags);
900asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
901 void __user *uargs);
902asmlinkage long sys_getrandom(char __user *buf, size_t count,
903 unsigned int flags);
904asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
905asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
906asmlinkage long sys_execveat(int dfd, const char __user *filename,
907 const char __user *const __user *argv,
908 const char __user *const __user *envp, int flags);
909asmlinkage long sys_userfaultfd(int flags);
910asmlinkage long sys_membarrier(int cmd, int flags);
911asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
912asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
913 int fd_out, loff_t __user *off_out,
914 size_t len, unsigned int flags);
915asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
916 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
917 rwf_t flags);
918asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
919 unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
920 rwf_t flags);
921asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
922 unsigned long prot, int pkey);
923asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
924asmlinkage long sys_pkey_free(int pkey);
925asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
926 unsigned mask, struct statx __user *buffer);
927asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
928 int flags, uint32_t sig);
929
930/*
931 * Architecture-specific system calls
932 */
933
934/* arch/x86/kernel/ioport.c */
935asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
936
937/* pciconfig: alpha, arm, arm64, ia64, sparc */
938asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
939 unsigned long off, unsigned long len,
940 void __user *buf);
941asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
942 unsigned long off, unsigned long len,
943 void __user *buf);
944asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
945
946/* powerpc */
947asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
948 __u32 __user *ustatus);
949asmlinkage long sys_spu_create(const char __user *name,
950 unsigned int flags, umode_t mode, int fd);
951
952
953/*
954 * Deprecated system calls which are still defined in
955 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
956 */
957
958/* __ARCH_WANT_SYSCALL_NO_AT */
959asmlinkage long sys_open(const char __user *filename,
960 int flags, umode_t mode);
961asmlinkage long sys_link(const char __user *oldname,
962 const char __user *newname);
963asmlinkage long sys_unlink(const char __user *pathname);
964asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
965 unsigned dev);
966asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
967asmlinkage long sys_chown(const char __user *filename,
968 uid_t user, gid_t group);
969asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
970asmlinkage long sys_rmdir(const char __user *pathname);
971asmlinkage long sys_lchown(const char __user *filename,
972 uid_t user, gid_t group);
973asmlinkage long sys_access(const char __user *filename, int mode);
974asmlinkage long sys_rename(const char __user *oldname,
975 const char __user *newname);
976asmlinkage long sys_symlink(const char __user *old, const char __user *new);
977#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
978asmlinkage long sys_stat64(const char __user *filename,
979 struct stat64 __user *statbuf);
980asmlinkage long sys_lstat64(const char __user *filename,
981 struct stat64 __user *statbuf);
982#endif
983
984/* __ARCH_WANT_SYSCALL_NO_FLAGS */
985asmlinkage long sys_pipe(int __user *fildes);
986asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
987asmlinkage long sys_epoll_create(int size);
988asmlinkage long sys_inotify_init(void);
989asmlinkage long sys_eventfd(unsigned int count);
990asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
991
992/* __ARCH_WANT_SYSCALL_OFF_T */
993asmlinkage long sys_sendfile(int out_fd, int in_fd,
994 off_t __user *offset, size_t count);
995asmlinkage long sys_newstat(const char __user *filename,
996 struct stat __user *statbuf);
997asmlinkage long sys_newlstat(const char __user *filename,
998 struct stat __user *statbuf);
999asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
1000
1001/* __ARCH_WANT_SYSCALL_DEPRECATED */
1002asmlinkage long sys_alarm(unsigned int seconds);
1003asmlinkage long sys_getpgrp(void);
1004asmlinkage long sys_pause(void);
1005asmlinkage long sys_time(time_t __user *tloc);
1006#ifdef __ARCH_WANT_SYS_UTIME
1007asmlinkage long sys_utime(char __user *filename,
1008 struct utimbuf __user *times);
1009asmlinkage long sys_utimes(char __user *filename,
1010 struct timeval __user *utimes);
1011asmlinkage long sys_futimesat(int dfd, const char __user *filename,
1012 struct timeval __user *utimes);
1013#endif
1014asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
1015asmlinkage long sys_getdents(unsigned int fd,
1016 struct linux_dirent __user *dirent,
1017 unsigned int count);
1018asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
1019 fd_set __user *exp, struct timeval __user *tvp);
1020asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
1021 int timeout);
1022asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1023 int maxevents, int timeout);
1024asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1025asmlinkage long sys_vfork(void);
1026asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1027asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1028asmlinkage long sys_bdflush(int func, long data);
1029asmlinkage long sys_oldumount(char __user *name);
1030asmlinkage long sys_uselib(const char __user *library);
1031asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
1032asmlinkage long sys_sysfs(int option,
1033 unsigned long arg1, unsigned long arg2);
1034asmlinkage long sys_fork(void);
1035
1036/* obsolete: kernel/time/time.c */
1037asmlinkage long sys_stime(time_t __user *tptr);
1038
1039/* obsolete: kernel/signal.c */
1040asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1041asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1042 old_sigset_t __user *oset);
1043#ifdef CONFIG_OLD_SIGSUSPEND
1044asmlinkage long sys_sigsuspend(old_sigset_t mask);
1045#endif
1046
1047#ifdef CONFIG_OLD_SIGSUSPEND3
1048asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1049#endif
1050
1051#ifdef CONFIG_OLD_SIGACTION
1052asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1053 struct old_sigaction __user *);
1054#endif
1055asmlinkage long sys_sgetmask(void);
1056asmlinkage long sys_ssetmask(int newmask);
1057asmlinkage long sys_signal(int sig, __sighandler_t handler);
1058
1059/* obsolete: kernel/sched/core.c */
1060asmlinkage long sys_nice(int increment);
1061
1062/* obsolete: kernel/kexec_file.c */
1063asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1064 unsigned long cmdline_len,
1065 const char __user *cmdline_ptr,
1066 unsigned long flags);
1067
1068/* obsolete: kernel/exit.c */
1069asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1070
1071/* obsolete: kernel/uid16.c */
1072#ifdef CONFIG_HAVE_UID16
1073asmlinkage long sys_chown16(const char __user *filename,
1074 old_uid_t user, old_gid_t group);
1075asmlinkage long sys_lchown16(const char __user *filename,
1076 old_uid_t user, old_gid_t group);
1077asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1078asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1079asmlinkage long sys_setgid16(old_gid_t gid);
1080asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1081asmlinkage long sys_setuid16(old_uid_t uid);
1082asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1083asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1084 old_uid_t __user *euid, old_uid_t __user *suid);
1085asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1086asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1087 old_gid_t __user *egid, old_gid_t __user *sgid);
1088asmlinkage long sys_setfsuid16(old_uid_t uid);
1089asmlinkage long sys_setfsgid16(old_gid_t gid);
1090asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1091asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1092asmlinkage long sys_getuid16(void);
1093asmlinkage long sys_geteuid16(void);
1094asmlinkage long sys_getgid16(void);
1095asmlinkage long sys_getegid16(void);
1096#endif
1097
1098/* obsolete: net/socket.c */
1099asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1100
1101/* obsolete: fs/stat.c */
1102asmlinkage long sys_stat(const char __user *filename,
1103 struct __old_kernel_stat __user *statbuf);
1104asmlinkage long sys_lstat(const char __user *filename,
1105 struct __old_kernel_stat __user *statbuf);
1106asmlinkage long sys_fstat(unsigned int fd,
1107 struct __old_kernel_stat __user *statbuf);
1108asmlinkage long sys_readlink(const char __user *path,
1109 char __user *buf, int bufsiz);
1110
1111/* obsolete: fs/select.c */
1112asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1113
1114/* obsolete: fs/readdir.c */
1115asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1116
1117/* obsolete: kernel/sys.c */
1118asmlinkage long sys_gethostname(char __user *name, int len);
1119asmlinkage long sys_uname(struct old_utsname __user *);
1120asmlinkage long sys_olduname(struct oldold_utsname __user *);
1121#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1122asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1123#endif
1124
1125/* obsolete: ipc */
1126asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1127 unsigned long third, void __user *ptr, long fifth);
1128
1129/* obsolete: mm/ */
1130asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1131 unsigned long prot, unsigned long flags,
1132 unsigned long fd, unsigned long pgoff);
1133asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1134
1135
1136/*
1137 * Not a real system call, but a placeholder for syscalls which are
1138 * not implemented -- see kernel/sys_ni.c
1139 */
1140asmlinkage long sys_ni_syscall(void);
1141
1142#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1143
1144
1145/*
1146 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1147 * Instead, use one of the functions which work equivalently, such as
1148 * the ksys_xyzyyz() functions prototyped below.
1149 */
1150
1151int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type,
1152 unsigned long flags, void __user *data);
1153int ksys_umount(char __user *name, int flags);
1154int ksys_dup(unsigned int fildes);
1155int ksys_chroot(const char __user *filename);
1156ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1157int ksys_chdir(const char __user *filename);
1158int ksys_fchmod(unsigned int fd, umode_t mode);
1159int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1160int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent,
1161 unsigned int count);
1162int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
1163off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence);
1164ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1165void ksys_sync(void);
1166int ksys_unshare(unsigned long unshare_flags);
1167int ksys_setsid(void);
1168int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1169 unsigned int flags);
1170ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1171 loff_t pos);
1172ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1173 size_t count, loff_t pos);
1174int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1175#ifdef CONFIG_ADVISE_SYSCALLS
1176int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1177#else
1178static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1179 int advice)
1180{
1181 return -EINVAL;
1182}
1183#endif
1184unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1185 unsigned long prot, unsigned long flags,
1186 unsigned long fd, unsigned long pgoff);
1187ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1188
1189/*
1190 * The following kernel syscall equivalents are just wrappers to fs-internal
1191 * functions. Therefore, provide stubs to be inlined at the callsites.
1192 */
1193extern long do_unlinkat(int dfd, struct filename *name);
1194
1195static inline long ksys_unlink(const char __user *pathname)
1196{
1197 return do_unlinkat(AT_FDCWD, getname(pathname));
1198}
1199
1200extern long do_rmdir(int dfd, const char __user *pathname);
1201
1202static inline long ksys_rmdir(const char __user *pathname)
1203{
1204 return do_rmdir(AT_FDCWD, pathname);
1205}
1206
1207extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
1208
1209static inline long ksys_mkdir(const char __user *pathname, umode_t mode)
1210{
1211 return do_mkdirat(AT_FDCWD, pathname, mode);
1212}
1213
1214extern long do_symlinkat(const char __user *oldname, int newdfd,
1215 const char __user *newname);
1216
1217static inline long ksys_symlink(const char __user *oldname,
1218 const char __user *newname)
1219{
1220 return do_symlinkat(oldname, AT_FDCWD, newname);
1221}
1222
1223extern long do_mknodat(int dfd, const char __user *filename, umode_t mode,
1224 unsigned int dev);
1225
1226static inline long ksys_mknod(const char __user *filename, umode_t mode,
1227 unsigned int dev)
1228{
1229 return do_mknodat(AT_FDCWD, filename, mode, dev);
1230}
1231
1232extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
1233 const char __user *newname, int flags);
1234
1235static inline long ksys_link(const char __user *oldname,
1236 const char __user *newname)
1237{
1238 return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
1239}
1240
1241extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
1242
1243static inline int ksys_chmod(const char __user *filename, umode_t mode)
1244{
1245 return do_fchmodat(AT_FDCWD, filename, mode);
1246}
1247
1248extern long do_faccessat(int dfd, const char __user *filename, int mode);
1249
1250static inline long ksys_access(const char __user *filename, int mode)
1251{
1252 return do_faccessat(AT_FDCWD, filename, mode);
1253}
1254
1255extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1256 gid_t group, int flag);
1257
1258static inline long ksys_chown(const char __user *filename, uid_t user,
1259 gid_t group)
1260{
1261 return do_fchownat(AT_FDCWD, filename, user, group, 0);
1262}
1263
1264static inline long ksys_lchown(const char __user *filename, uid_t user,
1265 gid_t group)
1266{
1267 return do_fchownat(AT_FDCWD, filename, user, group,
1268 AT_SYMLINK_NOFOLLOW);
1269}
1270
1271extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1272
1273static inline long ksys_ftruncate(unsigned int fd, unsigned long length)
1274{
1275 return do_sys_ftruncate(fd, length, 1);
1276}
1277
1278extern int __close_fd(struct files_struct *files, unsigned int fd);
1279
1280/*
1281 * In contrast to sys_close(), this stub does not check whether the syscall
1282 * should or should not be restarted, but returns the raw error codes from
1283 * __close_fd().
1284 */
1285static inline int ksys_close(unsigned int fd)
1286{
1287 return __close_fd(current->files, fd);
1288}
1289
1290extern long do_sys_open(int dfd, const char __user *filename, int flags,
1291 umode_t mode);
1292
1293static inline long ksys_open(const char __user *filename, int flags,
1294 umode_t mode)
1295{
1296 if (force_o_largefile())
1297 flags |= O_LARGEFILE;
1298 return do_sys_open(AT_FDCWD, filename, flags, mode);
1299}
1300
1301extern long do_sys_truncate(const char __user *pathname, loff_t length);
1302
1303static inline long ksys_truncate(const char __user *pathname, loff_t length)
1304{
1305 return do_sys_truncate(pathname, length);
1306}
1307
1308static inline unsigned int ksys_personality(unsigned int personality)
1309{
1310 unsigned int old = current->personality;
1311
1312 if (personality != 0xffffffff)
1313 set_personality(personality);
1314
1315 return old;
1316}
1317
1318#endif