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