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TOMOYO Linux Cross Reference
Linux/include/linux/syscalls.h

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

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