8de903587fb9f36272bfe02546a22c045de438dd
[linux-3.10.git] / include / linux / compat.h
1 #ifndef _LINUX_COMPAT_H
2 #define _LINUX_COMPAT_H
3 /*
4  * These are the type definitions for the architecture specific
5  * syscall compatibility layer.
6  */
7
8 #ifdef CONFIG_COMPAT
9
10 #include <linux/stat.h>
11 #include <linux/param.h>        /* for HZ */
12 #include <linux/sem.h>
13 #include <linux/socket.h>
14 #include <linux/if.h>
15 #include <linux/fs.h>
16 #include <linux/aio_abi.h>      /* for aio_context_t */
17
18 #include <asm/compat.h>
19 #include <asm/siginfo.h>
20 #include <asm/signal.h>
21
22 #ifndef COMPAT_USE_64BIT_TIME
23 #define COMPAT_USE_64BIT_TIME 0
24 #endif
25
26 #ifndef __SC_DELOUSE
27 #define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
28 #endif
29
30 #define __SC_CCAST1(t1, a1)      __SC_DELOUSE(t1,a1)
31 #define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__)
32 #define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__)
33 #define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__)
34 #define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__)
35 #define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__)
36 #define COMPAT_SYSCALL_DEFINE1(name, ...) \
37         COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
38 #define COMPAT_SYSCALL_DEFINE2(name, ...) \
39         COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
40 #define COMPAT_SYSCALL_DEFINE3(name, ...) \
41         COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
42 #define COMPAT_SYSCALL_DEFINE4(name, ...) \
43         COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
44 #define COMPAT_SYSCALL_DEFINE5(name, ...) \
45         COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
46 #define COMPAT_SYSCALL_DEFINE6(name, ...) \
47         COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
48
49 #ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
50
51 #define COMPAT_SYSCALL_DEFINEx(x, name, ...)                            \
52         asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__));    \
53         static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__));     \
54         asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__))     \
55         {                                                               \
56                 return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__)); \
57         }                                                               \
58         SYSCALL_ALIAS(compat_sys##name, compat_SyS##name);              \
59         static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__))
60
61 #else /* CONFIG_HAVE_SYSCALL_WRAPPERS */
62
63 #define COMPAT_SYSCALL_DEFINEx(x, name, ...)                            \
64         asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__))
65
66 #endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */
67
68 #ifndef compat_user_stack_pointer
69 #define compat_user_stack_pointer() current_user_stack_pointer()
70 #endif
71 #ifdef CONFIG_GENERIC_SIGALTSTACK
72 #ifndef compat_sigaltstack      /* we'll need that for MIPS */
73 typedef struct compat_sigaltstack {
74         compat_uptr_t                   ss_sp;
75         int                             ss_flags;
76         compat_size_t                   ss_size;
77 } compat_stack_t;
78 #endif
79 #endif
80
81 #define compat_jiffies_to_clock_t(x)    \
82                 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
83
84 typedef __compat_uid32_t        compat_uid_t;
85 typedef __compat_gid32_t        compat_gid_t;
86
87 struct compat_sel_arg_struct;
88 struct rusage;
89
90 struct compat_itimerspec {
91         struct compat_timespec it_interval;
92         struct compat_timespec it_value;
93 };
94
95 struct compat_utimbuf {
96         compat_time_t           actime;
97         compat_time_t           modtime;
98 };
99
100 struct compat_itimerval {
101         struct compat_timeval   it_interval;
102         struct compat_timeval   it_value;
103 };
104
105 struct compat_tms {
106         compat_clock_t          tms_utime;
107         compat_clock_t          tms_stime;
108         compat_clock_t          tms_cutime;
109         compat_clock_t          tms_cstime;
110 };
111
112 struct compat_timex {
113         compat_uint_t modes;
114         compat_long_t offset;
115         compat_long_t freq;
116         compat_long_t maxerror;
117         compat_long_t esterror;
118         compat_int_t status;
119         compat_long_t constant;
120         compat_long_t precision;
121         compat_long_t tolerance;
122         struct compat_timeval time;
123         compat_long_t tick;
124         compat_long_t ppsfreq;
125         compat_long_t jitter;
126         compat_int_t shift;
127         compat_long_t stabil;
128         compat_long_t jitcnt;
129         compat_long_t calcnt;
130         compat_long_t errcnt;
131         compat_long_t stbcnt;
132         compat_int_t tai;
133
134         compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
135         compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
136         compat_int_t:32; compat_int_t:32; compat_int_t:32;
137 };
138
139 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
140
141 typedef struct {
142         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
143 } compat_sigset_t;
144
145 #ifdef CONFIG_GENERIC_COMPAT_RT_SIGACTION
146 struct compat_sigaction {
147 #ifndef __ARCH_HAS_ODD_SIGACTION
148         compat_uptr_t                   sa_handler;
149         compat_ulong_t                  sa_flags;
150 #else
151         compat_ulong_t                  sa_flags;
152         compat_uptr_t                   sa_handler;
153 #endif
154 #ifdef __ARCH_HAS_SA_RESTORER
155         compat_uptr_t                   sa_restorer;
156 #endif
157         compat_sigset_t                 sa_mask __packed;
158 };
159 #endif
160
161 /*
162  * These functions operate strictly on struct compat_time*
163  */
164 extern int get_compat_timespec(struct timespec *,
165                                const struct compat_timespec __user *);
166 extern int put_compat_timespec(const struct timespec *,
167                                struct compat_timespec __user *);
168 extern int get_compat_timeval(struct timeval *,
169                               const struct compat_timeval __user *);
170 extern int put_compat_timeval(const struct timeval *,
171                               struct compat_timeval __user *);
172 /*
173  * These functions operate on 32- or 64-bit specs depending on
174  * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
175  * naming as compat_get/put_ rather than get/put_compat_.
176  */
177 extern int compat_get_timespec(struct timespec *, const void __user *);
178 extern int compat_put_timespec(const struct timespec *, void __user *);
179 extern int compat_get_timeval(struct timeval *, const void __user *);
180 extern int compat_put_timeval(const struct timeval *, void __user *);
181
182 struct compat_iovec {
183         compat_uptr_t   iov_base;
184         compat_size_t   iov_len;
185 };
186
187 struct compat_rlimit {
188         compat_ulong_t  rlim_cur;
189         compat_ulong_t  rlim_max;
190 };
191
192 struct compat_rusage {
193         struct compat_timeval ru_utime;
194         struct compat_timeval ru_stime;
195         compat_long_t   ru_maxrss;
196         compat_long_t   ru_ixrss;
197         compat_long_t   ru_idrss;
198         compat_long_t   ru_isrss;
199         compat_long_t   ru_minflt;
200         compat_long_t   ru_majflt;
201         compat_long_t   ru_nswap;
202         compat_long_t   ru_inblock;
203         compat_long_t   ru_oublock;
204         compat_long_t   ru_msgsnd;
205         compat_long_t   ru_msgrcv;
206         compat_long_t   ru_nsignals;
207         compat_long_t   ru_nvcsw;
208         compat_long_t   ru_nivcsw;
209 };
210
211 extern int put_compat_rusage(const struct rusage *,
212                              struct compat_rusage __user *);
213
214 struct compat_siginfo;
215
216 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
217                 struct compat_siginfo __user *, int,
218                 struct compat_rusage __user *);
219
220 struct compat_dirent {
221         u32             d_ino;
222         compat_off_t    d_off;
223         u16             d_reclen;
224         char            d_name[256];
225 };
226
227 struct compat_ustat {
228         compat_daddr_t          f_tfree;
229         compat_ino_t            f_tinode;
230         char                    f_fname[6];
231         char                    f_fpack[6];
232 };
233
234 #define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
235
236 typedef struct compat_sigevent {
237         compat_sigval_t sigev_value;
238         compat_int_t sigev_signo;
239         compat_int_t sigev_notify;
240         union {
241                 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
242                 compat_int_t _tid;
243
244                 struct {
245                         compat_uptr_t _function;
246                         compat_uptr_t _attribute;
247                 } _sigev_thread;
248         } _sigev_un;
249 } compat_sigevent_t;
250
251 struct compat_ifmap {
252         compat_ulong_t mem_start;
253         compat_ulong_t mem_end;
254         unsigned short base_addr;
255         unsigned char irq;
256         unsigned char dma;
257         unsigned char port;
258 };
259
260 struct compat_if_settings {
261         unsigned int type;      /* Type of physical device or protocol */
262         unsigned int size;      /* Size of the data allocated by the caller */
263         compat_uptr_t ifs_ifsu; /* union of pointers */
264 };
265
266 struct compat_ifreq {
267         union {
268                 char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
269         } ifr_ifrn;
270         union {
271                 struct  sockaddr ifru_addr;
272                 struct  sockaddr ifru_dstaddr;
273                 struct  sockaddr ifru_broadaddr;
274                 struct  sockaddr ifru_netmask;
275                 struct  sockaddr ifru_hwaddr;
276                 short   ifru_flags;
277                 compat_int_t    ifru_ivalue;
278                 compat_int_t    ifru_mtu;
279                 struct  compat_ifmap ifru_map;
280                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
281                 char    ifru_newname[IFNAMSIZ];
282                 compat_caddr_t  ifru_data;
283                 struct  compat_if_settings ifru_settings;
284         } ifr_ifru;
285 };
286
287 struct compat_ifconf {
288         compat_int_t    ifc_len;                /* size of buffer */
289         compat_caddr_t  ifcbuf;
290 };
291
292 struct compat_robust_list {
293         compat_uptr_t                   next;
294 };
295
296 struct compat_robust_list_head {
297         struct compat_robust_list       list;
298         compat_long_t                   futex_offset;
299         compat_uptr_t                   list_op_pending;
300 };
301
302 #ifdef CONFIG_COMPAT_OLD_SIGACTION
303 struct compat_old_sigaction {
304         compat_uptr_t                   sa_handler;
305         compat_old_sigset_t             sa_mask;
306         compat_ulong_t                  sa_flags;
307         compat_uptr_t                   sa_restorer;
308 };
309 #endif
310
311 struct compat_statfs;
312 struct compat_statfs64;
313 struct compat_old_linux_dirent;
314 struct compat_linux_dirent;
315 struct linux_dirent64;
316 struct compat_msghdr;
317 struct compat_mmsghdr;
318 struct compat_sysinfo;
319 struct compat_sysctl_args;
320 struct compat_kexec_segment;
321 struct compat_mq_attr;
322 struct compat_msgbuf;
323
324 extern void compat_exit_robust_list(struct task_struct *curr);
325
326 asmlinkage long
327 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
328                            compat_size_t len);
329 asmlinkage long
330 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
331                            compat_size_t __user *len_ptr);
332
333 #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
334 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
335 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
336 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
337                 int version, void __user *uptr);
338 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
339                 void __user *uptr);
340 #else
341 long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
342 long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
343                 compat_ssize_t msgsz, int msgflg);
344 long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
345                 compat_ssize_t msgsz, long msgtyp, int msgflg);
346 long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
347 #endif
348 long compat_sys_msgctl(int first, int second, void __user *uptr);
349 long compat_sys_shmctl(int first, int second, void __user *uptr);
350 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
351                 unsigned nsems, const struct compat_timespec __user *timeout);
352 asmlinkage long compat_sys_keyctl(u32 option,
353                               u32 arg2, u32 arg3, u32 arg4, u32 arg5);
354 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
355
356 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
357                 const struct compat_iovec __user *vec, unsigned long vlen);
358 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
359                 const struct compat_iovec __user *vec, unsigned long vlen);
360 asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
361                 const struct compat_iovec __user *vec,
362                 unsigned long vlen, u32 pos_low, u32 pos_high);
363 asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
364                 const struct compat_iovec __user *vec,
365                 unsigned long vlen, u32 pos_low, u32 pos_high);
366
367 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
368                      const compat_uptr_t __user *envp);
369
370 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
371                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
372                 struct compat_timeval __user *tvp);
373
374 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
375
376 asmlinkage long compat_sys_wait4(compat_pid_t pid,
377                                  compat_uint_t __user *stat_addr, int options,
378                                  struct compat_rusage __user *ru);
379
380 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
381
382 #define BITS_TO_COMPAT_LONGS(bits) \
383         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
384
385 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
386                        unsigned long bitmap_size);
387 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
388                        unsigned long bitmap_size);
389 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
390 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
391 int get_compat_sigevent(struct sigevent *event,
392                 const struct compat_sigevent __user *u_event);
393 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
394                                   struct compat_siginfo __user *uinfo);
395 #ifdef CONFIG_COMPAT_OLD_SIGACTION
396 asmlinkage long compat_sys_sigaction(int sig,
397                                    const struct compat_old_sigaction __user *act,
398                                    struct compat_old_sigaction __user *oact);
399 #endif
400
401 static inline int compat_timeval_compare(struct compat_timeval *lhs,
402                                         struct compat_timeval *rhs)
403 {
404         if (lhs->tv_sec < rhs->tv_sec)
405                 return -1;
406         if (lhs->tv_sec > rhs->tv_sec)
407                 return 1;
408         return lhs->tv_usec - rhs->tv_usec;
409 }
410
411 static inline int compat_timespec_compare(struct compat_timespec *lhs,
412                                         struct compat_timespec *rhs)
413 {
414         if (lhs->tv_sec < rhs->tv_sec)
415                 return -1;
416         if (lhs->tv_sec > rhs->tv_sec)
417                 return 1;
418         return lhs->tv_nsec - rhs->tv_nsec;
419 }
420
421 extern int get_compat_itimerspec(struct itimerspec *dst,
422                                  const struct compat_itimerspec __user *src);
423 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
424                                  const struct itimerspec *src);
425
426 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
427                 struct timezone __user *tz);
428 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
429                 struct timezone __user *tz);
430
431 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
432
433 extern int compat_printk(const char *fmt, ...);
434 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat);
435 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set);
436
437 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
438                 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
439                 const compat_ulong_t __user *new_nodes);
440
441 extern int compat_ptrace_request(struct task_struct *child,
442                                  compat_long_t request,
443                                  compat_ulong_t addr, compat_ulong_t data);
444
445 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
446                                compat_ulong_t addr, compat_ulong_t data);
447 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
448                                   compat_long_t addr, compat_long_t data);
449
450 /*
451  * epoll (fs/eventpoll.c) compat bits follow ...
452  */
453 struct epoll_event;
454 #define compat_epoll_event      epoll_event
455 asmlinkage long compat_sys_epoll_pwait(int epfd,
456                         struct compat_epoll_event __user *events,
457                         int maxevents, int timeout,
458                         const compat_sigset_t __user *sigmask,
459                         compat_size_t sigsetsize);
460
461 asmlinkage long compat_sys_utime(const char __user *filename,
462                                  struct compat_utimbuf __user *t);
463 asmlinkage long compat_sys_utimensat(unsigned int dfd,
464                                      const char __user *filename,
465                                      struct compat_timespec __user *t,
466                                      int flags);
467
468 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
469 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
470 asmlinkage long compat_sys_signalfd(int ufd,
471                                     const compat_sigset_t __user *sigmask,
472                                     compat_size_t sigsetsize);
473 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
474                                    const struct compat_itimerspec __user *utmr,
475                                    struct compat_itimerspec __user *otmr);
476 asmlinkage long compat_sys_timerfd_gettime(int ufd,
477                                    struct compat_itimerspec __user *otmr);
478
479 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
480                                       __u32 __user *pages,
481                                       const int __user *nodes,
482                                       int __user *status,
483                                       int flags);
484 asmlinkage long compat_sys_futimesat(unsigned int dfd,
485                                      const char __user *filename,
486                                      struct compat_timeval __user *t);
487 asmlinkage long compat_sys_utimes(const char __user *filename,
488                                   struct compat_timeval __user *t);
489 asmlinkage long compat_sys_newstat(const char __user *filename,
490                                    struct compat_stat __user *statbuf);
491 asmlinkage long compat_sys_newlstat(const char __user *filename,
492                                     struct compat_stat __user *statbuf);
493 asmlinkage long compat_sys_newfstatat(unsigned int dfd,
494                                       const char __user *filename,
495                                       struct compat_stat __user *statbuf,
496                                       int flag);
497 asmlinkage long compat_sys_newfstat(unsigned int fd,
498                                     struct compat_stat __user *statbuf);
499 asmlinkage long compat_sys_statfs(const char __user *pathname,
500                                   struct compat_statfs __user *buf);
501 asmlinkage long compat_sys_fstatfs(unsigned int fd,
502                                    struct compat_statfs __user *buf);
503 asmlinkage long compat_sys_statfs64(const char __user *pathname,
504                                     compat_size_t sz,
505                                     struct compat_statfs64 __user *buf);
506 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
507                                      struct compat_statfs64 __user *buf);
508 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
509                                    unsigned long arg);
510 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
511                                  unsigned long arg);
512 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
513 asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
514                                         unsigned long min_nr,
515                                         unsigned long nr,
516                                         struct io_event __user *events,
517                                         struct compat_timespec __user *timeout);
518 asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
519                                      u32 __user *iocb);
520 asmlinkage long compat_sys_mount(const char __user *dev_name,
521                                  const char __user *dir_name,
522                                  const char __user *type, unsigned long flags,
523                                  const void __user *data);
524 asmlinkage long compat_sys_old_readdir(unsigned int fd,
525                                        struct compat_old_linux_dirent __user *,
526                                        unsigned int count);
527 asmlinkage long compat_sys_getdents(unsigned int fd,
528                                     struct compat_linux_dirent __user *dirent,
529                                     unsigned int count);
530 asmlinkage long compat_sys_getdents64(unsigned int fd,
531                                       struct linux_dirent64 __user *dirent,
532                                       unsigned int count);
533 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
534                                     unsigned int nr_segs, unsigned int flags);
535 asmlinkage long compat_sys_open(const char __user *filename, int flags,
536                                 umode_t mode);
537 asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
538                                   int flags, umode_t mode);
539 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
540                                              struct file_handle __user *handle,
541                                              int flags);
542 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
543                                     compat_ulong_t __user *outp,
544                                     compat_ulong_t __user *exp,
545                                     struct compat_timespec __user *tsp,
546                                     void __user *sig);
547 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
548                                  unsigned int nfds,
549                                  struct compat_timespec __user *tsp,
550                                  const compat_sigset_t __user *sigmask,
551                                  compat_size_t sigsetsize);
552 asmlinkage long compat_sys_signalfd4(int ufd,
553                                      const compat_sigset_t __user *sigmask,
554                                      compat_size_t sigsetsize, int flags);
555 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
556                                          compat_ulong_t __user *nmask,
557                                          compat_ulong_t maxnode,
558                                          compat_ulong_t addr,
559                                          compat_ulong_t flags);
560 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
561                                          compat_ulong_t maxnode);
562 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
563                                  compat_ulong_t mode,
564                                  compat_ulong_t __user *nmask,
565                                  compat_ulong_t maxnode, compat_ulong_t flags);
566
567 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
568                                       char __user *optval, unsigned int optlen);
569 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
570                                    unsigned flags);
571 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
572                                     unsigned vlen, unsigned int flags);
573 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
574                                    unsigned int flags);
575 asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
576                                 unsigned flags);
577 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
578                             unsigned flags, struct sockaddr __user *addr,
579                             int __user *addrlen);
580 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
581                                     unsigned vlen, unsigned int flags,
582                                     struct compat_timespec __user *timeout);
583 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
584                                      struct compat_timespec __user *rmtp);
585 asmlinkage long compat_sys_getitimer(int which,
586                                      struct compat_itimerval __user *it);
587 asmlinkage long compat_sys_setitimer(int which,
588                                      struct compat_itimerval __user *in,
589                                      struct compat_itimerval __user *out);
590 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
591 asmlinkage long compat_sys_setrlimit(unsigned int resource,
592                                      struct compat_rlimit __user *rlim);
593 asmlinkage long compat_sys_getrlimit(unsigned int resource,
594                                      struct compat_rlimit __user *rlim);
595 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
596 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
597                                      unsigned int len,
598                                      compat_ulong_t __user *user_mask_ptr);
599 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
600                                      unsigned int len,
601                                      compat_ulong_t __user *user_mask_ptr);
602 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
603                         struct compat_sigevent __user *timer_event_spec,
604                         timer_t __user *created_timer_id);
605 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
606                                          struct compat_itimerspec __user *new,
607                                          struct compat_itimerspec __user *old);
608 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
609                                  struct compat_itimerspec __user *setting);
610 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
611                                          struct compat_timespec __user *tp);
612 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
613                                          struct compat_timespec __user *tp);
614 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
615                                          struct compat_timex __user *tp);
616 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
617                                         struct compat_timespec __user *tp);
618 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
619                                            struct compat_timespec __user *rqtp,
620                                            struct compat_timespec __user *rmtp);
621 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
622                 struct compat_siginfo __user *uinfo,
623                 struct compat_timespec __user *uts, compat_size_t sigsetsize);
624 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
625                                          compat_size_t sigsetsize);
626 #ifdef CONFIG_GENERIC_COMPAT_RT_SIGPROCMASK
627 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
628                                           compat_sigset_t __user *oset,
629                                           compat_size_t sigsetsize);
630 #endif
631 #ifdef CONFIG_GENERIC_COMPAT_RT_SIGPENDING
632 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
633                                          compat_size_t sigsetsize);
634 #endif
635 #ifndef CONFIG_ODD_RT_SIGACTION
636 #ifdef CONFIG_GENERIC_COMPAT_RT_SIGACTION
637 asmlinkage long compat_sys_rt_sigaction(int,
638                                  const struct compat_sigaction __user *,
639                                  struct compat_sigaction __user *,
640                                  compat_size_t);
641 #endif
642 #endif
643 #ifdef CONFIG_GENERIC_COMPAT_RT_SIGQUEUEINFO
644 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
645                                 struct compat_siginfo __user *uinfo);
646 #endif
647 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
648 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
649                                  unsigned long arg);
650 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
651                 struct compat_timespec __user *utime, u32 __user *uaddr2,
652                 u32 val3);
653 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
654                                       char __user *optval, int __user *optlen);
655 asmlinkage long compat_sys_kexec_load(unsigned long entry,
656                                       unsigned long nr_segments,
657                                       struct compat_kexec_segment __user *,
658                                       unsigned long flags);
659 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
660                         const struct compat_mq_attr __user *u_mqstat,
661                         struct compat_mq_attr __user *u_omqstat);
662 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
663                         const struct compat_sigevent __user *u_notification);
664 asmlinkage long compat_sys_mq_open(const char __user *u_name,
665                         int oflag, compat_mode_t mode,
666                         struct compat_mq_attr __user *u_attr);
667 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
668                         const char __user *u_msg_ptr,
669                         size_t msg_len, unsigned int msg_prio,
670                         const struct compat_timespec __user *u_abs_timeout);
671 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
672                         char __user *u_msg_ptr,
673                         size_t msg_len, unsigned int __user *u_msg_prio,
674                         const struct compat_timespec __user *u_abs_timeout);
675 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
676 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
677
678 extern ssize_t compat_rw_copy_check_uvector(int type,
679                 const struct compat_iovec __user *uvector,
680                 unsigned long nr_segs,
681                 unsigned long fast_segs, struct iovec *fast_pointer,
682                 struct iovec **ret_pointer);
683
684 extern void __user *compat_alloc_user_space(unsigned long len);
685
686 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
687                 const struct compat_iovec __user *lvec,
688                 unsigned long liovcnt, const struct compat_iovec __user *rvec,
689                 unsigned long riovcnt, unsigned long flags);
690 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
691                 const struct compat_iovec __user *lvec,
692                 unsigned long liovcnt, const struct compat_iovec __user *rvec,
693                 unsigned long riovcnt, unsigned long flags);
694
695 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
696                                     compat_off_t __user *offset, compat_size_t count);
697 #ifdef CONFIG_GENERIC_SIGALTSTACK
698 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
699                                        compat_stack_t __user *uoss_ptr);
700
701 int compat_restore_altstack(const compat_stack_t __user *uss);
702 int __compat_save_altstack(compat_stack_t __user *, unsigned long);
703 #endif
704
705 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
706                                                  struct compat_timespec __user *interval);
707
708 #else
709
710 #define is_compat_task() (0)
711
712 #endif /* CONFIG_COMPAT */
713 #endif /* _LINUX_COMPAT_H */