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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * syscalls.h - Linux syscall interfaces (non-arch-specific)
4  *
5  * Copyright (c) 2004 Randy Dunlap
6  * Copyright (c) 2004 Open Source Development Labs
7  */
8 
9 #ifndef _LINUX_SYSCALLS_H
10 #define _LINUX_SYSCALLS_H
11 
12 struct __aio_sigset;
13 struct epoll_event;
14 struct iattr;
15 struct inode;
16 struct iocb;
17 struct io_event;
18 struct iovec;
19 struct __kernel_old_itimerval;
20 struct kexec_segment;
21 struct linux_dirent;
22 struct linux_dirent64;
23 struct list_head;
24 struct mmap_arg_struct;
25 struct msgbuf;
26 struct user_msghdr;
27 struct mmsghdr;
28 struct msqid_ds;
29 struct new_utsname;
30 struct nfsctl_arg;
31 struct __old_kernel_stat;
32 struct oldold_utsname;
33 struct old_utsname;
34 struct pollfd;
35 struct rlimit;
36 struct rlimit64;
37 struct rusage;
38 struct sched_param;
39 struct sched_attr;
40 struct sel_arg_struct;
41 struct semaphore;
42 struct sembuf;
43 struct shmid_ds;
44 struct sockaddr;
45 struct stat;
46 struct stat64;
47 struct statfs;
48 struct statfs64;
49 struct statx;
50 struct sysinfo;
51 struct timespec;
52 struct __kernel_old_timeval;
53 struct __kernel_timex;
54 struct timezone;
55 struct tms;
56 struct utimbuf;
57 struct mq_attr;
58 struct compat_stat;
59 struct old_timeval32;
60 struct robust_list_head;
61 struct getcpu_cache;
62 struct old_linux_dirent;
63 struct perf_event_attr;
64 struct file_handle;
65 struct sigaltstack;
66 struct rseq;
67 union bpf_attr;
68 struct io_uring_params;
69 struct clone_args;
70 struct open_how;
71 
72 #include <linux/types.h>
73 #include <linux/aio_abi.h>
74 #include <linux/capability.h>
75 #include <linux/signal.h>
76 #include <linux/list.h>
77 #include <linux/bug.h>
78 #include <linux/sem.h>
79 #include <asm/siginfo.h>
80 #include <linux/unistd.h>
81 #include <linux/quota.h>
82 #include <linux/key.h>
83 #include <linux/personality.h>
84 #include <trace/syscall.h>
85 
86 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
87 /*
88  * It may be useful for an architecture to override the definitions of the
89  * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a
90  * different calling convention for syscalls. To allow for that, the prototypes
91  * for the sys_*() functions below will *not* be included if
92  * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
93  */
94 #include <asm/syscall_wrapper.h>
95 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
96 
97 /*
98  * __MAP - apply a macro to syscall arguments
99  * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
100  *    m(t1, a1), m(t2, a2), ..., m(tn, an)
101  * The first argument must be equal to the amount of type/name
102  * pairs given.  Note that this list of pairs (i.e. the arguments
103  * of __MAP starting at the third one) is in the same format as
104  * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
105  */
106 #define __MAP0(m,...)
107 #define __MAP1(m,t,a,...) m(t,a)
108 #define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
109 #define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
110 #define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
111 #define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
112 #define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
113 #define __MAP(n,...) __MAP##n(__VA_ARGS__)
114 
115 #define __SC_DECL(t, a)	t a
116 #define __TYPE_AS(t, v)	__same_type((__force t)0, v)
117 #define __TYPE_IS_L(t)	(__TYPE_AS(t, 0L))
118 #define __TYPE_IS_UL(t)	(__TYPE_AS(t, 0UL))
119 #define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL))
120 #define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
121 #define __SC_CAST(t, a)	(__force t) a
122 #define __SC_TYPE(t, a)	t
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 	  __section("_ftrace_events")					\
149 	 *__event_enter_##sname = &event_enter_##sname;
150 
151 #define SYSCALL_TRACE_EXIT_EVENT(sname)					\
152 	static struct syscall_metadata __syscall_meta_##sname;		\
153 	static struct trace_event_call __used				\
154 	  event_exit_##sname = {					\
155 		.class			= &event_class_syscall_exit,	\
156 		{							\
157 			.name                   = "sys_exit"#sname,	\
158 		},							\
159 		.event.funcs		= &exit_syscall_print_funcs,	\
160 		.data			= (void *)&__syscall_meta_##sname,\
161 		.flags                  = TRACE_EVENT_FL_CAP_ANY,	\
162 	};								\
163 	static struct trace_event_call __used				\
164 	  __section("_ftrace_events")					\
165 	*__event_exit_##sname = &event_exit_##sname;
166 
167 #define SYSCALL_METADATA(sname, nb, ...)			\
168 	static const char *types_##sname[] = {			\
169 		__MAP(nb,__SC_STR_TDECL,__VA_ARGS__)		\
170 	};							\
171 	static const char *args_##sname[] = {			\
172 		__MAP(nb,__SC_STR_ADECL,__VA_ARGS__)		\
173 	};							\
174 	SYSCALL_TRACE_ENTER_EVENT(sname);			\
175 	SYSCALL_TRACE_EXIT_EVENT(sname);			\
176 	static struct syscall_metadata __used			\
177 	  __syscall_meta_##sname = {				\
178 		.name 		= "sys"#sname,			\
179 		.syscall_nr	= -1,	/* Filled in at boot */	\
180 		.nb_args 	= nb,				\
181 		.types		= nb ? types_##sname : NULL,	\
182 		.args		= nb ? args_##sname : NULL,	\
183 		.enter_event	= &event_enter_##sname,		\
184 		.exit_event	= &event_exit_##sname,		\
185 		.enter_fields	= LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
186 	};							\
187 	static struct syscall_metadata __used			\
188 	  __section("__syscalls_metadata")			\
189 	 *__p_syscall_meta_##sname = &__syscall_meta_##sname;
190 
is_syscall_trace_event(struct trace_event_call * tp_event)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 
is_syscall_trace_event(struct trace_event_call * tp_event)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 /* For split 64-bit arguments on 32-bit architectures */
256 #ifdef __LITTLE_ENDIAN
257 #define SC_ARG64(name) u32, name##_lo, u32, name##_hi
258 #else
259 #define SC_ARG64(name) u32, name##_hi, u32, name##_lo
260 #endif
261 #define SC_VAL64(type, name) ((type) name##_hi << 32 | name##_lo)
262 
263 #ifdef CONFIG_COMPAT
264 #define SYSCALL32_DEFINE1 COMPAT_SYSCALL_DEFINE1
265 #define SYSCALL32_DEFINE2 COMPAT_SYSCALL_DEFINE2
266 #define SYSCALL32_DEFINE3 COMPAT_SYSCALL_DEFINE3
267 #define SYSCALL32_DEFINE4 COMPAT_SYSCALL_DEFINE4
268 #define SYSCALL32_DEFINE5 COMPAT_SYSCALL_DEFINE5
269 #define SYSCALL32_DEFINE6 COMPAT_SYSCALL_DEFINE6
270 #else
271 #define SYSCALL32_DEFINE1 SYSCALL_DEFINE1
272 #define SYSCALL32_DEFINE2 SYSCALL_DEFINE2
273 #define SYSCALL32_DEFINE3 SYSCALL_DEFINE3
274 #define SYSCALL32_DEFINE4 SYSCALL_DEFINE4
275 #define SYSCALL32_DEFINE5 SYSCALL_DEFINE5
276 #define SYSCALL32_DEFINE6 SYSCALL_DEFINE6
277 #endif
278 
279 /*
280  * Called before coming back to user-mode. Returning to user-mode with an
281  * address limit different than USER_DS can allow to overwrite kernel memory.
282  */
addr_limit_user_check(void)283 static inline void addr_limit_user_check(void)
284 {
285 #ifdef TIF_FSCHECK
286 	if (!test_thread_flag(TIF_FSCHECK))
287 		return;
288 #endif
289 
290 	if (CHECK_DATA_CORRUPTION(uaccess_kernel(),
291 				  "Invalid address limit on user-mode return"))
292 		force_sig(SIGKILL);
293 
294 #ifdef TIF_FSCHECK
295 	clear_thread_flag(TIF_FSCHECK);
296 #endif
297 }
298 
299 /*
300  * These syscall function prototypes are kept in the same order as
301  * include/uapi/asm-generic/unistd.h. Architecture specific entries go below,
302  * followed by deprecated or obsolete system calls.
303  *
304  * Please note that these prototypes here are only provided for information
305  * purposes, for static analysis, and for linking from the syscall table.
306  * These functions should not be called elsewhere from kernel code.
307  *
308  * As the syscall calling convention may be different from the default
309  * for architectures overriding the syscall calling convention, do not
310  * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
311  */
312 #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
313 asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
314 asmlinkage long sys_io_destroy(aio_context_t ctx);
315 asmlinkage long sys_io_submit(aio_context_t, long,
316 			struct iocb __user * __user *);
317 asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
318 			      struct io_event __user *result);
319 asmlinkage long sys_io_getevents(aio_context_t ctx_id,
320 				long min_nr,
321 				long nr,
322 				struct io_event __user *events,
323 				struct __kernel_timespec __user *timeout);
324 asmlinkage long sys_io_getevents_time32(__u32 ctx_id,
325 				__s32 min_nr,
326 				__s32 nr,
327 				struct io_event __user *events,
328 				struct old_timespec32 __user *timeout);
329 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
330 				long min_nr,
331 				long nr,
332 				struct io_event __user *events,
333 				struct __kernel_timespec __user *timeout,
334 				const struct __aio_sigset *sig);
335 asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
336 				long min_nr,
337 				long nr,
338 				struct io_event __user *events,
339 				struct old_timespec32 __user *timeout,
340 				const struct __aio_sigset *sig);
341 asmlinkage long sys_io_uring_setup(u32 entries,
342 				struct io_uring_params __user *p);
343 asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit,
344 				u32 min_complete, u32 flags,
345 				const void __user *argp, size_t argsz);
346 asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op,
347 				void __user *arg, unsigned int nr_args);
348 
349 /* fs/xattr.c */
350 asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
351 			     const void __user *value, size_t size, int flags);
352 asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
353 			      const void __user *value, size_t size, int flags);
354 asmlinkage long sys_fsetxattr(int fd, const char __user *name,
355 			      const void __user *value, size_t size, int flags);
356 asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
357 			     void __user *value, size_t size);
358 asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
359 			      void __user *value, size_t size);
360 asmlinkage long sys_fgetxattr(int fd, const char __user *name,
361 			      void __user *value, size_t size);
362 asmlinkage long sys_listxattr(const char __user *path, char __user *list,
363 			      size_t size);
364 asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
365 			       size_t size);
366 asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
367 asmlinkage long sys_removexattr(const char __user *path,
368 				const char __user *name);
369 asmlinkage long sys_lremovexattr(const char __user *path,
370 				 const char __user *name);
371 asmlinkage long sys_fremovexattr(int fd, const char __user *name);
372 
373 /* fs/dcache.c */
374 asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
375 
376 /* fs/cookies.c */
377 asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
378 
379 /* fs/eventfd.c */
380 asmlinkage long sys_eventfd2(unsigned int count, int flags);
381 
382 /* fs/eventpoll.c */
383 asmlinkage long sys_epoll_create1(int flags);
384 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
385 				struct epoll_event __user *event);
386 asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
387 				int maxevents, int timeout,
388 				const sigset_t __user *sigmask,
389 				size_t sigsetsize);
390 
391 /* fs/fcntl.c */
392 asmlinkage long sys_dup(unsigned int fildes);
393 asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
394 asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
395 #if BITS_PER_LONG == 32
396 asmlinkage long sys_fcntl64(unsigned int fd,
397 				unsigned int cmd, unsigned long arg);
398 #endif
399 
400 /* fs/inotify_user.c */
401 asmlinkage long sys_inotify_init1(int flags);
402 asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
403 					u32 mask);
404 asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
405 
406 /* fs/ioctl.c */
407 asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
408 				unsigned long arg);
409 
410 /* fs/ioprio.c */
411 asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
412 asmlinkage long sys_ioprio_get(int which, int who);
413 
414 /* fs/locks.c */
415 asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
416 
417 /* fs/namei.c */
418 asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
419 			    unsigned dev);
420 asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
421 asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
422 asmlinkage long sys_symlinkat(const char __user * oldname,
423 			      int newdfd, const char __user * newname);
424 asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
425 			   int newdfd, const char __user *newname, int flags);
426 asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
427 			     int newdfd, const char __user * newname);
428 
429 /* fs/namespace.c */
430 asmlinkage long sys_umount(char __user *name, int flags);
431 asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
432 				char __user *type, unsigned long flags,
433 				void __user *data);
434 asmlinkage long sys_pivot_root(const char __user *new_root,
435 				const char __user *put_old);
436 
437 /* fs/nfsctl.c */
438 
439 /* fs/open.c */
440 asmlinkage long sys_statfs(const char __user * path,
441 				struct statfs __user *buf);
442 asmlinkage long sys_statfs64(const char __user *path, size_t sz,
443 				struct statfs64 __user *buf);
444 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
445 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
446 				struct statfs64 __user *buf);
447 asmlinkage long sys_truncate(const char __user *path, long length);
448 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
449 #if BITS_PER_LONG == 32
450 asmlinkage long sys_truncate64(const char __user *path, loff_t length);
451 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
452 #endif
453 asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
454 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
455 asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode,
456 			       int flags);
457 asmlinkage long sys_chdir(const char __user *filename);
458 asmlinkage long sys_fchdir(unsigned int fd);
459 asmlinkage long sys_chroot(const char __user *filename);
460 asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
461 asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
462 			     umode_t mode);
463 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
464 			     gid_t group, int flag);
465 asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
466 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
467 			   umode_t mode);
468 asmlinkage long sys_openat2(int dfd, const char __user *filename,
469 			    struct open_how *how, size_t size);
470 asmlinkage long sys_close(unsigned int fd);
471 asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd,
472 				unsigned int flags);
473 asmlinkage long sys_vhangup(void);
474 
475 /* fs/pipe.c */
476 asmlinkage long sys_pipe2(int __user *fildes, int flags);
477 
478 /* fs/quota.c */
479 asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
480 				qid_t id, void __user *addr);
481 
482 /* fs/readdir.c */
483 asmlinkage long sys_getdents64(unsigned int fd,
484 				struct linux_dirent64 __user *dirent,
485 				unsigned int count);
486 
487 /* fs/read_write.c */
488 asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
489 			unsigned long offset_low, loff_t __user *result,
490 			unsigned int whence);
491 asmlinkage long sys_lseek(unsigned int fd, off_t offset,
492 			  unsigned int whence);
493 asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
494 asmlinkage long sys_write(unsigned int fd, const char __user *buf,
495 			  size_t count);
496 asmlinkage long sys_readv(unsigned long fd,
497 			  const struct iovec __user *vec,
498 			  unsigned long vlen);
499 asmlinkage long sys_writev(unsigned long fd,
500 			   const struct iovec __user *vec,
501 			   unsigned long vlen);
502 asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
503 			    size_t count, loff_t pos);
504 asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
505 			     size_t count, loff_t pos);
506 asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
507 			   unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
508 asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
509 			    unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
510 
511 /* fs/sendfile.c */
512 asmlinkage long sys_sendfile64(int out_fd, int in_fd,
513 			       loff_t __user *offset, size_t count);
514 
515 /* fs/select.c */
516 asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
517 			     fd_set __user *, struct __kernel_timespec __user *,
518 			     void __user *);
519 asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
520 			     fd_set __user *, struct old_timespec32 __user *,
521 			     void __user *);
522 asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
523 			  struct __kernel_timespec __user *, const sigset_t __user *,
524 			  size_t);
525 asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
526 			  struct old_timespec32 __user *, const sigset_t __user *,
527 			  size_t);
528 
529 /* fs/signalfd.c */
530 asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
531 
532 /* fs/splice.c */
533 asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
534 			     unsigned long nr_segs, unsigned int flags);
535 asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
536 			   int fd_out, loff_t __user *off_out,
537 			   size_t len, unsigned int flags);
538 asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
539 
540 /* fs/stat.c */
541 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
542 			       int bufsiz);
543 asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
544 			       struct stat __user *statbuf, int flag);
545 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
546 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
547 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
548 asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
549 			       struct stat64 __user *statbuf, int flag);
550 #endif
551 
552 /* fs/sync.c */
553 asmlinkage long sys_sync(void);
554 asmlinkage long sys_fsync(unsigned int fd);
555 asmlinkage long sys_fdatasync(unsigned int fd);
556 asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
557 				     loff_t offset, loff_t nbytes);
558 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
559 					unsigned int flags);
560 
561 /* fs/timerfd.c */
562 asmlinkage long sys_timerfd_create(int clockid, int flags);
563 asmlinkage long sys_timerfd_settime(int ufd, int flags,
564 				    const struct __kernel_itimerspec __user *utmr,
565 				    struct __kernel_itimerspec __user *otmr);
566 asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
567 asmlinkage long sys_timerfd_gettime32(int ufd,
568 				   struct old_itimerspec32 __user *otmr);
569 asmlinkage long sys_timerfd_settime32(int ufd, int flags,
570 				   const struct old_itimerspec32 __user *utmr,
571 				   struct old_itimerspec32 __user *otmr);
572 
573 /* fs/utimes.c */
574 asmlinkage long sys_utimensat(int dfd, const char __user *filename,
575 				struct __kernel_timespec __user *utimes,
576 				int flags);
577 asmlinkage long sys_utimensat_time32(unsigned int dfd,
578 				const char __user *filename,
579 				struct old_timespec32 __user *t, int flags);
580 
581 /* kernel/acct.c */
582 asmlinkage long sys_acct(const char __user *name);
583 
584 /* kernel/capability.c */
585 asmlinkage long sys_capget(cap_user_header_t header,
586 				cap_user_data_t dataptr);
587 asmlinkage long sys_capset(cap_user_header_t header,
588 				const cap_user_data_t data);
589 
590 /* kernel/exec_domain.c */
591 asmlinkage long sys_personality(unsigned int personality);
592 
593 /* kernel/exit.c */
594 asmlinkage long sys_exit(int error_code);
595 asmlinkage long sys_exit_group(int error_code);
596 asmlinkage long sys_waitid(int which, pid_t pid,
597 			   struct siginfo __user *infop,
598 			   int options, struct rusage __user *ru);
599 
600 /* kernel/fork.c */
601 asmlinkage long sys_set_tid_address(int __user *tidptr);
602 asmlinkage long sys_unshare(unsigned long unshare_flags);
603 
604 /* kernel/futex.c */
605 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
606 			struct __kernel_timespec __user *utime, u32 __user *uaddr2,
607 			u32 val3);
608 asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
609 			struct old_timespec32 __user *utime, u32 __user *uaddr2,
610 			u32 val3);
611 asmlinkage long sys_get_robust_list(int pid,
612 				    struct robust_list_head __user * __user *head_ptr,
613 				    size_t __user *len_ptr);
614 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
615 				    size_t len);
616 
617 /* kernel/hrtimer.c */
618 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
619 			      struct __kernel_timespec __user *rmtp);
620 asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp,
621 				     struct old_timespec32 __user *rmtp);
622 
623 /* kernel/itimer.c */
624 asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value);
625 asmlinkage long sys_setitimer(int which,
626 				struct __kernel_old_itimerval __user *value,
627 				struct __kernel_old_itimerval __user *ovalue);
628 
629 /* kernel/kexec.c */
630 asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
631 				struct kexec_segment __user *segments,
632 				unsigned long flags);
633 
634 /* kernel/module.c */
635 asmlinkage long sys_init_module(void __user *umod, unsigned long len,
636 				const char __user *uargs);
637 asmlinkage long sys_delete_module(const char __user *name_user,
638 				unsigned int flags);
639 
640 /* kernel/posix-timers.c */
641 asmlinkage long sys_timer_create(clockid_t which_clock,
642 				 struct sigevent __user *timer_event_spec,
643 				 timer_t __user * created_timer_id);
644 asmlinkage long sys_timer_gettime(timer_t timer_id,
645 				struct __kernel_itimerspec __user *setting);
646 asmlinkage long sys_timer_getoverrun(timer_t timer_id);
647 asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
648 				const struct __kernel_itimerspec __user *new_setting,
649 				struct __kernel_itimerspec __user *old_setting);
650 asmlinkage long sys_timer_delete(timer_t timer_id);
651 asmlinkage long sys_clock_settime(clockid_t which_clock,
652 				const struct __kernel_timespec __user *tp);
653 asmlinkage long sys_clock_gettime(clockid_t which_clock,
654 				struct __kernel_timespec __user *tp);
655 asmlinkage long sys_clock_getres(clockid_t which_clock,
656 				struct __kernel_timespec __user *tp);
657 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
658 				const struct __kernel_timespec __user *rqtp,
659 				struct __kernel_timespec __user *rmtp);
660 asmlinkage long sys_timer_gettime32(timer_t timer_id,
661 				 struct old_itimerspec32 __user *setting);
662 asmlinkage long sys_timer_settime32(timer_t timer_id, int flags,
663 					 struct old_itimerspec32 __user *new,
664 					 struct old_itimerspec32 __user *old);
665 asmlinkage long sys_clock_settime32(clockid_t which_clock,
666 				struct old_timespec32 __user *tp);
667 asmlinkage long sys_clock_gettime32(clockid_t which_clock,
668 				struct old_timespec32 __user *tp);
669 asmlinkage long sys_clock_getres_time32(clockid_t which_clock,
670 				struct old_timespec32 __user *tp);
671 asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags,
672 				struct old_timespec32 __user *rqtp,
673 				struct old_timespec32 __user *rmtp);
674 
675 /* kernel/printk.c */
676 asmlinkage long sys_syslog(int type, char __user *buf, int len);
677 
678 /* kernel/ptrace.c */
679 asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
680 			   unsigned long data);
681 /* kernel/sched/core.c */
682 
683 asmlinkage long sys_sched_setparam(pid_t pid,
684 					struct sched_param __user *param);
685 asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
686 					struct sched_param __user *param);
687 asmlinkage long sys_sched_getscheduler(pid_t pid);
688 asmlinkage long sys_sched_getparam(pid_t pid,
689 					struct sched_param __user *param);
690 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
691 					unsigned long __user *user_mask_ptr);
692 asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
693 					unsigned long __user *user_mask_ptr);
694 asmlinkage long sys_sched_yield(void);
695 asmlinkage long sys_sched_get_priority_max(int policy);
696 asmlinkage long sys_sched_get_priority_min(int policy);
697 asmlinkage long sys_sched_rr_get_interval(pid_t pid,
698 				struct __kernel_timespec __user *interval);
699 asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid,
700 						 struct old_timespec32 __user *interval);
701 
702 /* kernel/signal.c */
703 asmlinkage long sys_restart_syscall(void);
704 asmlinkage long sys_kill(pid_t pid, int sig);
705 asmlinkage long sys_tkill(pid_t pid, int sig);
706 asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
707 asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
708 				struct sigaltstack __user *uoss);
709 asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
710 #ifndef CONFIG_ODD_RT_SIGACTION
711 asmlinkage long sys_rt_sigaction(int,
712 				 const struct sigaction __user *,
713 				 struct sigaction __user *,
714 				 size_t);
715 #endif
716 asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
717 				sigset_t __user *oset, size_t sigsetsize);
718 asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
719 asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
720 				siginfo_t __user *uinfo,
721 				const struct __kernel_timespec __user *uts,
722 				size_t sigsetsize);
723 asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
724 				siginfo_t __user *uinfo,
725 				const struct old_timespec32 __user *uts,
726 				size_t sigsetsize);
727 asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
728 
729 /* kernel/sys.c */
730 asmlinkage long sys_setpriority(int which, int who, int niceval);
731 asmlinkage long sys_getpriority(int which, int who);
732 asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
733 				void __user *arg);
734 asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
735 asmlinkage long sys_setgid(gid_t gid);
736 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
737 asmlinkage long sys_setuid(uid_t uid);
738 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
739 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
740 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
741 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
742 asmlinkage long sys_setfsuid(uid_t uid);
743 asmlinkage long sys_setfsgid(gid_t gid);
744 asmlinkage long sys_times(struct tms __user *tbuf);
745 asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
746 asmlinkage long sys_getpgid(pid_t pid);
747 asmlinkage long sys_getsid(pid_t pid);
748 asmlinkage long sys_setsid(void);
749 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
750 asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
751 asmlinkage long sys_newuname(struct new_utsname __user *name);
752 asmlinkage long sys_sethostname(char __user *name, int len);
753 asmlinkage long sys_setdomainname(char __user *name, int len);
754 asmlinkage long sys_getrlimit(unsigned int resource,
755 				struct rlimit __user *rlim);
756 asmlinkage long sys_setrlimit(unsigned int resource,
757 				struct rlimit __user *rlim);
758 asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
759 asmlinkage long sys_umask(int mask);
760 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
761 			unsigned long arg4, unsigned long arg5);
762 asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
763 
764 /* kernel/time.c */
765 asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv,
766 				struct timezone __user *tz);
767 asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv,
768 				struct timezone __user *tz);
769 asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p);
770 asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p);
771 
772 /* kernel/timer.c */
773 asmlinkage long sys_getpid(void);
774 asmlinkage long sys_getppid(void);
775 asmlinkage long sys_getuid(void);
776 asmlinkage long sys_geteuid(void);
777 asmlinkage long sys_getgid(void);
778 asmlinkage long sys_getegid(void);
779 asmlinkage long sys_gettid(void);
780 asmlinkage long sys_sysinfo(struct sysinfo __user *info);
781 
782 /* ipc/mqueue.c */
783 asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
784 asmlinkage long sys_mq_unlink(const char __user *name);
785 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);
786 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);
787 asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
788 asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
789 asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes,
790 			char __user *u_msg_ptr,
791 			unsigned int msg_len, unsigned int __user *u_msg_prio,
792 			const struct old_timespec32 __user *u_abs_timeout);
793 asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes,
794 			const char __user *u_msg_ptr,
795 			unsigned int msg_len, unsigned int msg_prio,
796 			const struct old_timespec32 __user *u_abs_timeout);
797 
798 /* ipc/msg.c */
799 asmlinkage long sys_msgget(key_t key, int msgflg);
800 asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
801 asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
802 asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
803 				size_t msgsz, long msgtyp, int msgflg);
804 asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
805 				size_t msgsz, int msgflg);
806 
807 /* ipc/sem.c */
808 asmlinkage long sys_semget(key_t key, int nsems, int semflg);
809 asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
810 asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
811 asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
812 				unsigned nsops,
813 				const struct __kernel_timespec __user *timeout);
814 asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops,
815 				unsigned nsops,
816 				const struct old_timespec32 __user *timeout);
817 asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
818 				unsigned nsops);
819 
820 /* ipc/shm.c */
821 asmlinkage long sys_shmget(key_t key, size_t size, int flag);
822 asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
823 asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
824 asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
825 asmlinkage long sys_shmdt(char __user *shmaddr);
826 
827 /* net/socket.c */
828 asmlinkage long sys_socket(int, int, int);
829 asmlinkage long sys_socketpair(int, int, int, int __user *);
830 asmlinkage long sys_bind(int, struct sockaddr __user *, int);
831 asmlinkage long sys_listen(int, int);
832 asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
833 asmlinkage long sys_connect(int, struct sockaddr __user *, int);
834 asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
835 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
836 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
837 				struct sockaddr __user *, int);
838 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
839 				struct sockaddr __user *, int __user *);
840 asmlinkage long sys_setsockopt(int fd, int level, int optname,
841 				char __user *optval, int optlen);
842 asmlinkage long sys_getsockopt(int fd, int level, int optname,
843 				char __user *optval, int __user *optlen);
844 asmlinkage long sys_shutdown(int, int);
845 asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
846 asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
847 
848 /* mm/filemap.c */
849 asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
850 
851 /* mm/nommu.c, also with MMU */
852 asmlinkage long sys_brk(unsigned long brk);
853 asmlinkage long sys_munmap(unsigned long addr, size_t len);
854 asmlinkage long sys_mremap(unsigned long addr,
855 			   unsigned long old_len, unsigned long new_len,
856 			   unsigned long flags, unsigned long new_addr);
857 
858 /* security/keys/keyctl.c */
859 asmlinkage long sys_add_key(const char __user *_type,
860 			    const char __user *_description,
861 			    const void __user *_payload,
862 			    size_t plen,
863 			    key_serial_t destringid);
864 asmlinkage long sys_request_key(const char __user *_type,
865 				const char __user *_description,
866 				const char __user *_callout_info,
867 				key_serial_t destringid);
868 asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
869 			   unsigned long arg4, unsigned long arg5);
870 
871 /* arch/example/kernel/sys_example.c */
872 #ifdef CONFIG_CLONE_BACKWARDS
873 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
874 	       int __user *);
875 #else
876 #ifdef CONFIG_CLONE_BACKWARDS3
877 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
878 			  int __user *, unsigned long);
879 #else
880 asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
881 	       int __user *, unsigned long);
882 #endif
883 #endif
884 
885 asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size);
886 
887 asmlinkage long sys_execve(const char __user *filename,
888 		const char __user *const __user *argv,
889 		const char __user *const __user *envp);
890 
891 /* mm/fadvise.c */
892 asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
893 
894 /* mm/, CONFIG_MMU only */
895 asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
896 asmlinkage long sys_swapoff(const char __user *specialfile);
897 asmlinkage long sys_mprotect(unsigned long start, size_t len,
898 				unsigned long prot);
899 asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
900 asmlinkage long sys_mlock(unsigned long start, size_t len);
901 asmlinkage long sys_munlock(unsigned long start, size_t len);
902 asmlinkage long sys_mlockall(int flags);
903 asmlinkage long sys_munlockall(void);
904 asmlinkage long sys_mincore(unsigned long start, size_t len,
905 				unsigned char __user * vec);
906 asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
907 asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec,
908 			size_t vlen, int behavior, unsigned int flags);
909 asmlinkage long sys_process_mrelease(int pidfd, unsigned int flags);
910 asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
911 			unsigned long prot, unsigned long pgoff,
912 			unsigned long flags);
913 asmlinkage long sys_mbind(unsigned long start, unsigned long len,
914 				unsigned long mode,
915 				const unsigned long __user *nmask,
916 				unsigned long maxnode,
917 				unsigned flags);
918 asmlinkage long sys_get_mempolicy(int __user *policy,
919 				unsigned long __user *nmask,
920 				unsigned long maxnode,
921 				unsigned long addr, unsigned long flags);
922 asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
923 				unsigned long maxnode);
924 asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
925 				const unsigned long __user *from,
926 				const unsigned long __user *to);
927 asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
928 				const void __user * __user *pages,
929 				const int __user *nodes,
930 				int __user *status,
931 				int flags);
932 
933 asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t  pid, int sig,
934 		siginfo_t __user *uinfo);
935 asmlinkage long sys_perf_event_open(
936 		struct perf_event_attr __user *attr_uptr,
937 		pid_t pid, int cpu, int group_fd, unsigned long flags);
938 asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
939 asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
940 			     unsigned int vlen, unsigned flags,
941 			     struct __kernel_timespec __user *timeout);
942 asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
943 			     unsigned int vlen, unsigned flags,
944 			     struct old_timespec32 __user *timeout);
945 
946 asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
947 				int options, struct rusage __user *ru);
948 asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
949 				const struct rlimit64 __user *new_rlim,
950 				struct rlimit64 __user *old_rlim);
951 asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
952 asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
953 				  u64 mask, int fd,
954 				  const char  __user *pathname);
955 asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
956 				      struct file_handle __user *handle,
957 				      int __user *mnt_id, int flag);
958 asmlinkage long sys_open_by_handle_at(int mountdirfd,
959 				      struct file_handle __user *handle,
960 				      int flags);
961 asmlinkage long sys_clock_adjtime(clockid_t which_clock,
962 				struct __kernel_timex __user *tx);
963 asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
964 				struct old_timex32 __user *tx);
965 asmlinkage long sys_syncfs(int fd);
966 asmlinkage long sys_setns(int fd, int nstype);
967 asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags);
968 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
969 			     unsigned int vlen, unsigned flags);
970 asmlinkage long sys_process_vm_readv(pid_t pid,
971 				     const struct iovec __user *lvec,
972 				     unsigned long liovcnt,
973 				     const struct iovec __user *rvec,
974 				     unsigned long riovcnt,
975 				     unsigned long flags);
976 asmlinkage long sys_process_vm_writev(pid_t pid,
977 				      const struct iovec __user *lvec,
978 				      unsigned long liovcnt,
979 				      const struct iovec __user *rvec,
980 				      unsigned long riovcnt,
981 				      unsigned long flags);
982 asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
983 			 unsigned long idx1, unsigned long idx2);
984 asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
985 asmlinkage long sys_sched_setattr(pid_t pid,
986 					struct sched_attr __user *attr,
987 					unsigned int flags);
988 asmlinkage long sys_sched_getattr(pid_t pid,
989 					struct sched_attr __user *attr,
990 					unsigned int size,
991 					unsigned int flags);
992 asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
993 			      int newdfd, const char __user *newname,
994 			      unsigned int flags);
995 asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
996 			    void __user *uargs);
997 asmlinkage long sys_getrandom(char __user *buf, size_t count,
998 			      unsigned int flags);
999 asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
1000 asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1001 asmlinkage long sys_execveat(int dfd, const char __user *filename,
1002 			const char __user *const __user *argv,
1003 			const char __user *const __user *envp, int flags);
1004 asmlinkage long sys_userfaultfd(int flags);
1005 asmlinkage long sys_membarrier(int cmd, unsigned int flags, int cpu_id);
1006 asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
1007 asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
1008 				    int fd_out, loff_t __user *off_out,
1009 				    size_t len, unsigned int flags);
1010 asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
1011 			    unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
1012 			    rwf_t flags);
1013 asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
1014 			    unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
1015 			    rwf_t flags);
1016 asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
1017 				  unsigned long prot, int pkey);
1018 asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
1019 asmlinkage long sys_pkey_free(int pkey);
1020 asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
1021 			  unsigned mask, struct statx __user *buffer);
1022 asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
1023 			 int flags, uint32_t sig);
1024 asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags);
1025 asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path,
1026 			       int to_dfd, const char __user *to_path,
1027 			       unsigned int ms_flags);
1028 asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags);
1029 asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key,
1030 			     const void __user *value, int aux);
1031 asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags);
1032 asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags);
1033 asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
1034 				       siginfo_t __user *info,
1035 				       unsigned int flags);
1036 asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags);
1037 
1038 /*
1039  * Architecture-specific system calls
1040  */
1041 
1042 /* arch/x86/kernel/ioport.c */
1043 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
1044 
1045 /* pciconfig: alpha, arm, arm64, ia64, sparc */
1046 asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
1047 				unsigned long off, unsigned long len,
1048 				void __user *buf);
1049 asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
1050 				unsigned long off, unsigned long len,
1051 				void __user *buf);
1052 asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
1053 
1054 /* powerpc */
1055 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
1056 				 __u32 __user *ustatus);
1057 asmlinkage long sys_spu_create(const char __user *name,
1058 		unsigned int flags, umode_t mode, int fd);
1059 
1060 
1061 /*
1062  * Deprecated system calls which are still defined in
1063  * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
1064  */
1065 
1066 /* __ARCH_WANT_SYSCALL_NO_AT */
1067 asmlinkage long sys_open(const char __user *filename,
1068 				int flags, umode_t mode);
1069 asmlinkage long sys_link(const char __user *oldname,
1070 				const char __user *newname);
1071 asmlinkage long sys_unlink(const char __user *pathname);
1072 asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
1073 				unsigned dev);
1074 asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
1075 asmlinkage long sys_chown(const char __user *filename,
1076 				uid_t user, gid_t group);
1077 asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
1078 asmlinkage long sys_rmdir(const char __user *pathname);
1079 asmlinkage long sys_lchown(const char __user *filename,
1080 				uid_t user, gid_t group);
1081 asmlinkage long sys_access(const char __user *filename, int mode);
1082 asmlinkage long sys_rename(const char __user *oldname,
1083 				const char __user *newname);
1084 asmlinkage long sys_symlink(const char __user *old, const char __user *new);
1085 #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
1086 asmlinkage long sys_stat64(const char __user *filename,
1087 				struct stat64 __user *statbuf);
1088 asmlinkage long sys_lstat64(const char __user *filename,
1089 				struct stat64 __user *statbuf);
1090 #endif
1091 
1092 /* __ARCH_WANT_SYSCALL_NO_FLAGS */
1093 asmlinkage long sys_pipe(int __user *fildes);
1094 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
1095 asmlinkage long sys_epoll_create(int size);
1096 asmlinkage long sys_inotify_init(void);
1097 asmlinkage long sys_eventfd(unsigned int count);
1098 asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
1099 
1100 /* __ARCH_WANT_SYSCALL_OFF_T */
1101 asmlinkage long sys_sendfile(int out_fd, int in_fd,
1102 			     off_t __user *offset, size_t count);
1103 asmlinkage long sys_newstat(const char __user *filename,
1104 				struct stat __user *statbuf);
1105 asmlinkage long sys_newlstat(const char __user *filename,
1106 				struct stat __user *statbuf);
1107 asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
1108 
1109 /* __ARCH_WANT_SYSCALL_DEPRECATED */
1110 asmlinkage long sys_alarm(unsigned int seconds);
1111 asmlinkage long sys_getpgrp(void);
1112 asmlinkage long sys_pause(void);
1113 asmlinkage long sys_time(__kernel_old_time_t __user *tloc);
1114 asmlinkage long sys_time32(old_time32_t __user *tloc);
1115 #ifdef __ARCH_WANT_SYS_UTIME
1116 asmlinkage long sys_utime(char __user *filename,
1117 				struct utimbuf __user *times);
1118 asmlinkage long sys_utimes(char __user *filename,
1119 				struct __kernel_old_timeval __user *utimes);
1120 asmlinkage long sys_futimesat(int dfd, const char __user *filename,
1121 			      struct __kernel_old_timeval __user *utimes);
1122 #endif
1123 asmlinkage long sys_futimesat_time32(unsigned int dfd,
1124 				     const char __user *filename,
1125 				     struct old_timeval32 __user *t);
1126 asmlinkage long sys_utime32(const char __user *filename,
1127 				 struct old_utimbuf32 __user *t);
1128 asmlinkage long sys_utimes_time32(const char __user *filename,
1129 				  struct old_timeval32 __user *t);
1130 asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
1131 asmlinkage long sys_getdents(unsigned int fd,
1132 				struct linux_dirent __user *dirent,
1133 				unsigned int count);
1134 asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
1135 			fd_set __user *exp, struct __kernel_old_timeval __user *tvp);
1136 asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
1137 				int timeout);
1138 asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
1139 				int maxevents, int timeout);
1140 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
1141 asmlinkage long sys_vfork(void);
1142 asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
1143 asmlinkage long sys_send(int, void __user *, size_t, unsigned);
1144 asmlinkage long sys_bdflush(int func, long data);
1145 asmlinkage long sys_oldumount(char __user *name);
1146 asmlinkage long sys_uselib(const char __user *library);
1147 asmlinkage long sys_sysfs(int option,
1148 				unsigned long arg1, unsigned long arg2);
1149 asmlinkage long sys_fork(void);
1150 
1151 /* obsolete: kernel/time/time.c */
1152 asmlinkage long sys_stime(__kernel_old_time_t __user *tptr);
1153 asmlinkage long sys_stime32(old_time32_t __user *tptr);
1154 
1155 /* obsolete: kernel/signal.c */
1156 asmlinkage long sys_sigpending(old_sigset_t __user *uset);
1157 asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
1158 				old_sigset_t __user *oset);
1159 #ifdef CONFIG_OLD_SIGSUSPEND
1160 asmlinkage long sys_sigsuspend(old_sigset_t mask);
1161 #endif
1162 
1163 #ifdef CONFIG_OLD_SIGSUSPEND3
1164 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
1165 #endif
1166 
1167 #ifdef CONFIG_OLD_SIGACTION
1168 asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
1169 				struct old_sigaction __user *);
1170 #endif
1171 asmlinkage long sys_sgetmask(void);
1172 asmlinkage long sys_ssetmask(int newmask);
1173 asmlinkage long sys_signal(int sig, __sighandler_t handler);
1174 
1175 /* obsolete: kernel/sched/core.c */
1176 asmlinkage long sys_nice(int increment);
1177 
1178 /* obsolete: kernel/kexec_file.c */
1179 asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
1180 				    unsigned long cmdline_len,
1181 				    const char __user *cmdline_ptr,
1182 				    unsigned long flags);
1183 
1184 /* obsolete: kernel/exit.c */
1185 asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
1186 
1187 /* obsolete: kernel/uid16.c */
1188 #ifdef CONFIG_HAVE_UID16
1189 asmlinkage long sys_chown16(const char __user *filename,
1190 				old_uid_t user, old_gid_t group);
1191 asmlinkage long sys_lchown16(const char __user *filename,
1192 				old_uid_t user, old_gid_t group);
1193 asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
1194 asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
1195 asmlinkage long sys_setgid16(old_gid_t gid);
1196 asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
1197 asmlinkage long sys_setuid16(old_uid_t uid);
1198 asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
1199 asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
1200 				old_uid_t __user *euid, old_uid_t __user *suid);
1201 asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
1202 asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
1203 				old_gid_t __user *egid, old_gid_t __user *sgid);
1204 asmlinkage long sys_setfsuid16(old_uid_t uid);
1205 asmlinkage long sys_setfsgid16(old_gid_t gid);
1206 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
1207 asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
1208 asmlinkage long sys_getuid16(void);
1209 asmlinkage long sys_geteuid16(void);
1210 asmlinkage long sys_getgid16(void);
1211 asmlinkage long sys_getegid16(void);
1212 #endif
1213 
1214 /* obsolete: net/socket.c */
1215 asmlinkage long sys_socketcall(int call, unsigned long __user *args);
1216 
1217 /* obsolete: fs/stat.c */
1218 asmlinkage long sys_stat(const char __user *filename,
1219 			struct __old_kernel_stat __user *statbuf);
1220 asmlinkage long sys_lstat(const char __user *filename,
1221 			struct __old_kernel_stat __user *statbuf);
1222 asmlinkage long sys_fstat(unsigned int fd,
1223 			struct __old_kernel_stat __user *statbuf);
1224 asmlinkage long sys_readlink(const char __user *path,
1225 				char __user *buf, int bufsiz);
1226 
1227 /* obsolete: fs/select.c */
1228 asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
1229 
1230 /* obsolete: fs/readdir.c */
1231 asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
1232 
1233 /* obsolete: kernel/sys.c */
1234 asmlinkage long sys_gethostname(char __user *name, int len);
1235 asmlinkage long sys_uname(struct old_utsname __user *);
1236 asmlinkage long sys_olduname(struct oldold_utsname __user *);
1237 #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
1238 asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
1239 #endif
1240 
1241 /* obsolete: ipc */
1242 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
1243 		unsigned long third, void __user *ptr, long fifth);
1244 
1245 /* obsolete: mm/ */
1246 asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
1247 			unsigned long prot, unsigned long flags,
1248 			unsigned long fd, unsigned long pgoff);
1249 asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
1250 
1251 
1252 /*
1253  * Not a real system call, but a placeholder for syscalls which are
1254  * not implemented -- see kernel/sys_ni.c
1255  */
1256 asmlinkage long sys_ni_syscall(void);
1257 
1258 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
1259 
1260 
1261 /*
1262  * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
1263  * Instead, use one of the functions which work equivalently, such as
1264  * the ksys_xyzyyz() functions prototyped below.
1265  */
1266 ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1267 int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1268 ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
1269 void ksys_sync(void);
1270 int ksys_unshare(unsigned long unshare_flags);
1271 int ksys_setsid(void);
1272 int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
1273 			 unsigned int flags);
1274 ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
1275 		     loff_t pos);
1276 ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
1277 		      size_t count, loff_t pos);
1278 int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
1279 #ifdef CONFIG_ADVISE_SYSCALLS
1280 int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
1281 #else
ksys_fadvise64_64(int fd,loff_t offset,loff_t len,int advice)1282 static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
1283 				    int advice)
1284 {
1285 	return -EINVAL;
1286 }
1287 #endif
1288 unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
1289 			      unsigned long prot, unsigned long flags,
1290 			      unsigned long fd, unsigned long pgoff);
1291 ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
1292 int ksys_ipc(unsigned int call, int first, unsigned long second,
1293 	unsigned long third, void __user * ptr, long fifth);
1294 int compat_ksys_ipc(u32 call, int first, int second,
1295 	u32 third, u32 ptr, u32 fifth);
1296 
1297 /*
1298  * The following kernel syscall equivalents are just wrappers to fs-internal
1299  * functions. Therefore, provide stubs to be inlined at the callsites.
1300  */
1301 extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
1302 		       gid_t group, int flag);
1303 
ksys_chown(const char __user * filename,uid_t user,gid_t group)1304 static inline long ksys_chown(const char __user *filename, uid_t user,
1305 			      gid_t group)
1306 {
1307 	return do_fchownat(AT_FDCWD, filename, user, group, 0);
1308 }
1309 
ksys_lchown(const char __user * filename,uid_t user,gid_t group)1310 static inline long ksys_lchown(const char __user *filename, uid_t user,
1311 			       gid_t group)
1312 {
1313 	return do_fchownat(AT_FDCWD, filename, user, group,
1314 			     AT_SYMLINK_NOFOLLOW);
1315 }
1316 
1317 extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
1318 
ksys_ftruncate(unsigned int fd,loff_t length)1319 static inline long ksys_ftruncate(unsigned int fd, loff_t length)
1320 {
1321 	return do_sys_ftruncate(fd, length, 1);
1322 }
1323 
1324 extern int __close_fd(struct files_struct *files, unsigned int fd);
1325 
1326 /*
1327  * In contrast to sys_close(), this stub does not check whether the syscall
1328  * should or should not be restarted, but returns the raw error codes from
1329  * __close_fd().
1330  */
ksys_close(unsigned int fd)1331 static inline int ksys_close(unsigned int fd)
1332 {
1333 	return __close_fd(current->files, fd);
1334 }
1335 
1336 extern long do_sys_truncate(const char __user *pathname, loff_t length);
1337 
ksys_truncate(const char __user * pathname,loff_t length)1338 static inline long ksys_truncate(const char __user *pathname, loff_t length)
1339 {
1340 	return do_sys_truncate(pathname, length);
1341 }
1342 
ksys_personality(unsigned int personality)1343 static inline unsigned int ksys_personality(unsigned int personality)
1344 {
1345 	unsigned int old = current->personality;
1346 
1347 	if (personality != 0xffffffff)
1348 		set_personality(personality);
1349 
1350 	return old;
1351 }
1352 
1353 /* for __ARCH_WANT_SYS_IPC */
1354 long ksys_semtimedop(int semid, struct sembuf __user *tsops,
1355 		     unsigned int nsops,
1356 		     const struct __kernel_timespec __user *timeout);
1357 long ksys_semget(key_t key, int nsems, int semflg);
1358 long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
1359 long ksys_msgget(key_t key, int msgflg);
1360 long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
1361 long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1362 		 long msgtyp, int msgflg);
1363 long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz,
1364 		 int msgflg);
1365 long ksys_shmget(key_t key, size_t size, int shmflg);
1366 long ksys_shmdt(char __user *shmaddr);
1367 long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
1368 long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
1369 			    unsigned int nsops,
1370 			    const struct old_timespec32 __user *timeout);
1371 
1372 int __sys_getsockopt(int fd, int level, int optname, char __user *optval,
1373 		int __user *optlen);
1374 int __sys_setsockopt(int fd, int level, int optname, char __user *optval,
1375 		int optlen);
1376 #endif
1377