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