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compat.h
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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 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
164 
165 typedef struct compat_sigevent {
166  compat_sigval_t sigev_value;
167  compat_int_t sigev_signo;
168  compat_int_t sigev_notify;
169  union {
170  compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
171  compat_int_t _tid;
172 
173  struct {
174  compat_uptr_t _function;
175  compat_uptr_t _attribute;
176  } _sigev_thread;
177  } _sigev_un;
178 } compat_sigevent_t;
179 
180 struct compat_ifmap {
181  compat_ulong_t mem_start;
182  compat_ulong_t mem_end;
183  unsigned short base_addr;
184  unsigned char irq;
185  unsigned char dma;
186  unsigned char port;
187 };
188 
189 struct compat_if_settings {
190  unsigned int type; /* Type of physical device or protocol */
191  unsigned int size; /* Size of the data allocated by the caller */
192  compat_uptr_t ifs_ifsu; /* union of pointers */
193 };
194 
195 struct compat_ifreq {
196  union {
197  char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
198  } ifr_ifrn;
199  union {
200  struct sockaddr ifru_addr;
201  struct sockaddr ifru_dstaddr;
202  struct sockaddr ifru_broadaddr;
203  struct sockaddr ifru_netmask;
204  struct sockaddr ifru_hwaddr;
205  short ifru_flags;
206  compat_int_t ifru_ivalue;
207  compat_int_t ifru_mtu;
208  struct compat_ifmap ifru_map;
209  char ifru_slave[IFNAMSIZ]; /* Just fits the size */
210  char ifru_newname[IFNAMSIZ];
211  compat_caddr_t ifru_data;
212  struct compat_if_settings ifru_settings;
213  } ifr_ifru;
214 };
215 
216 struct compat_ifconf {
217  compat_int_t ifc_len; /* size of buffer */
218  compat_caddr_t ifcbuf;
219 };
220 
221 struct compat_robust_list {
222  compat_uptr_t next;
223 };
224 
225 struct compat_robust_list_head {
226  struct compat_robust_list list;
227  compat_long_t futex_offset;
228  compat_uptr_t list_op_pending;
229 };
230 
231 struct compat_statfs;
232 struct compat_statfs64;
233 struct compat_old_linux_dirent;
234 struct compat_linux_dirent;
235 struct linux_dirent64;
236 struct compat_msghdr;
237 struct compat_mmsghdr;
238 struct compat_sysinfo;
239 struct compat_sysctl_args;
240 struct compat_kexec_segment;
241 struct compat_mq_attr;
242 struct compat_msgbuf;
243 
244 extern void compat_exit_robust_list(struct task_struct *curr);
245 
246 asmlinkage long
247 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
248  compat_size_t len);
249 asmlinkage long
250 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
251  compat_size_t __user *len_ptr);
252 
253 #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
254 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
255 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
256 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
257  int version, void __user *uptr);
258 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
259  void __user *uptr);
260 #else
261 long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
262 long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
263  compat_ssize_t msgsz, int msgflg);
264 long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
265  compat_ssize_t msgsz, long msgtyp, int msgflg);
266 long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
267 #endif
268 long compat_sys_msgctl(int first, int second, void __user *uptr);
269 long compat_sys_shmctl(int first, int second, void __user *uptr);
270 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
271  unsigned nsems, const struct compat_timespec __user *timeout);
272 asmlinkage long compat_sys_keyctl(u32 option,
273  u32 arg2, u32 arg3, u32 arg4, u32 arg5);
274 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
275 
276 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
277  const struct compat_iovec __user *vec, unsigned long vlen);
278 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
279  const struct compat_iovec __user *vec, unsigned long vlen);
280 asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
281  const struct compat_iovec __user *vec,
282  unsigned long vlen, u32 pos_low, u32 pos_high);
283 asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
284  const struct compat_iovec __user *vec,
285  unsigned long vlen, u32 pos_low, u32 pos_high);
286 
287 int compat_do_execve(const char *filename, const compat_uptr_t __user *argv,
288  const compat_uptr_t __user *envp, struct pt_regs *regs);
289 #ifdef __ARCH_WANT_SYS_EXECVE
290 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
291  const compat_uptr_t __user *envp);
292 #endif
293 
294 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
295  compat_ulong_t __user *outp, compat_ulong_t __user *exp,
296  struct compat_timeval __user *tvp);
297 
298 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
299 
300 asmlinkage long compat_sys_wait4(compat_pid_t pid,
301  compat_uint_t __user *stat_addr, int options,
302  struct compat_rusage __user *ru);
303 
304 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
305 
306 #define BITS_TO_COMPAT_LONGS(bits) \
307  (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
308 
309 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
310  unsigned long bitmap_size);
311 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
312  unsigned long bitmap_size);
313 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
314 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
315 int get_compat_sigevent(struct sigevent *event,
316  const struct compat_sigevent __user *u_event);
317 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
318  struct compat_siginfo __user *uinfo);
319 
320 static inline int compat_timeval_compare(struct compat_timeval *lhs,
321  struct compat_timeval *rhs)
322 {
323  if (lhs->tv_sec < rhs->tv_sec)
324  return -1;
325  if (lhs->tv_sec > rhs->tv_sec)
326  return 1;
327  return lhs->tv_usec - rhs->tv_usec;
328 }
329 
330 static inline int compat_timespec_compare(struct compat_timespec *lhs,
331  struct compat_timespec *rhs)
332 {
333  if (lhs->tv_sec < rhs->tv_sec)
334  return -1;
335  if (lhs->tv_sec > rhs->tv_sec)
336  return 1;
337  return lhs->tv_nsec - rhs->tv_nsec;
338 }
339 
340 extern int get_compat_itimerspec(struct itimerspec *dst,
341  const struct compat_itimerspec __user *src);
342 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
343  const struct itimerspec *src);
344 
345 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
346  struct timezone __user *tz);
347 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
348  struct timezone __user *tz);
349 
350 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
351 
352 extern int compat_printk(const char *fmt, ...);
353 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
354 
355 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
356  compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
357  const compat_ulong_t __user *new_nodes);
358 
359 extern int compat_ptrace_request(struct task_struct *child,
360  compat_long_t request,
361  compat_ulong_t addr, compat_ulong_t data);
362 
363 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
364  compat_ulong_t addr, compat_ulong_t data);
365 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
366  compat_long_t addr, compat_long_t data);
367 
368 /*
369  * epoll (fs/eventpoll.c) compat bits follow ...
370  */
371 struct epoll_event;
372 #define compat_epoll_event epoll_event
373 asmlinkage long compat_sys_epoll_pwait(int epfd,
374  struct compat_epoll_event __user *events,
375  int maxevents, int timeout,
376  const compat_sigset_t __user *sigmask,
377  compat_size_t sigsetsize);
378 
379 asmlinkage long compat_sys_utime(const char __user *filename,
380  struct compat_utimbuf __user *t);
381 asmlinkage long compat_sys_utimensat(unsigned int dfd,
382  const char __user *filename,
383  struct compat_timespec __user *t,
384  int flags);
385 
386 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
387 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
388 asmlinkage long compat_sys_signalfd(int ufd,
389  const compat_sigset_t __user *sigmask,
390  compat_size_t sigsetsize);
391 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
392  const struct compat_itimerspec __user *utmr,
393  struct compat_itimerspec __user *otmr);
394 asmlinkage long compat_sys_timerfd_gettime(int ufd,
395  struct compat_itimerspec __user *otmr);
396 
397 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
398  __u32 __user *pages,
399  const int __user *nodes,
400  int __user *status,
401  int flags);
402 asmlinkage long compat_sys_futimesat(unsigned int dfd,
403  const char __user *filename,
404  struct compat_timeval __user *t);
405 asmlinkage long compat_sys_utimes(const char __user *filename,
406  struct compat_timeval __user *t);
407 asmlinkage long compat_sys_newstat(const char __user *filename,
408  struct compat_stat __user *statbuf);
409 asmlinkage long compat_sys_newlstat(const char __user *filename,
410  struct compat_stat __user *statbuf);
411 asmlinkage long compat_sys_newfstatat(unsigned int dfd,
412  const char __user *filename,
413  struct compat_stat __user *statbuf,
414  int flag);
415 asmlinkage long compat_sys_newfstat(unsigned int fd,
416  struct compat_stat __user *statbuf);
417 asmlinkage long compat_sys_statfs(const char __user *pathname,
418  struct compat_statfs __user *buf);
419 asmlinkage long compat_sys_fstatfs(unsigned int fd,
420  struct compat_statfs __user *buf);
421 asmlinkage long compat_sys_statfs64(const char __user *pathname,
422  compat_size_t sz,
423  struct compat_statfs64 __user *buf);
424 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
425  struct compat_statfs64 __user *buf);
426 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
427  unsigned long arg);
428 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
429  unsigned long arg);
430 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
431 asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
432  unsigned long min_nr,
433  unsigned long nr,
434  struct io_event __user *events,
435  struct compat_timespec __user *timeout);
436 asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
437  u32 __user *iocb);
438 asmlinkage long compat_sys_mount(const char __user *dev_name,
439  const char __user *dir_name,
440  const char __user *type, unsigned long flags,
441  const void __user *data);
442 asmlinkage long compat_sys_old_readdir(unsigned int fd,
443  struct compat_old_linux_dirent __user *,
444  unsigned int count);
445 asmlinkage long compat_sys_getdents(unsigned int fd,
446  struct compat_linux_dirent __user *dirent,
447  unsigned int count);
448 asmlinkage long compat_sys_getdents64(unsigned int fd,
449  struct linux_dirent64 __user *dirent,
450  unsigned int count);
451 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
452  unsigned int nr_segs, unsigned int flags);
453 asmlinkage long compat_sys_open(const char __user *filename, int flags,
454  umode_t mode);
455 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
456  int flags, umode_t mode);
457 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
458  struct file_handle __user *handle,
459  int flags);
460 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
461  compat_ulong_t __user *outp,
462  compat_ulong_t __user *exp,
463  struct compat_timespec __user *tsp,
464  void __user *sig);
465 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
466  unsigned int nfds,
467  struct compat_timespec __user *tsp,
468  const compat_sigset_t __user *sigmask,
469  compat_size_t sigsetsize);
470 asmlinkage long compat_sys_signalfd4(int ufd,
471  const compat_sigset_t __user *sigmask,
472  compat_size_t sigsetsize, int flags);
473 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
474  compat_ulong_t __user *nmask,
475  compat_ulong_t maxnode,
476  compat_ulong_t addr,
477  compat_ulong_t flags);
478 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
479  compat_ulong_t maxnode);
480 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
481  compat_ulong_t mode,
482  compat_ulong_t __user *nmask,
483  compat_ulong_t maxnode, compat_ulong_t flags);
484 
485 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
486  char __user *optval, unsigned int optlen);
487 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
488  unsigned flags);
489 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
490  unsigned vlen, unsigned int flags);
491 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
492  unsigned int flags);
493 asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
494  unsigned flags);
495 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
496  unsigned flags, struct sockaddr __user *addr,
497  int __user *addrlen);
498 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
499  unsigned vlen, unsigned int flags,
500  struct compat_timespec __user *timeout);
501 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
502  struct compat_timespec __user *rmtp);
503 asmlinkage long compat_sys_getitimer(int which,
504  struct compat_itimerval __user *it);
505 asmlinkage long compat_sys_setitimer(int which,
506  struct compat_itimerval __user *in,
507  struct compat_itimerval __user *out);
508 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
509 asmlinkage long compat_sys_setrlimit(unsigned int resource,
510  struct compat_rlimit __user *rlim);
511 asmlinkage long compat_sys_getrlimit(unsigned int resource,
512  struct compat_rlimit __user *rlim);
513 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
514 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
515  unsigned int len,
516  compat_ulong_t __user *user_mask_ptr);
517 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
518  unsigned int len,
519  compat_ulong_t __user *user_mask_ptr);
520 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
521  struct compat_sigevent __user *timer_event_spec,
522  timer_t __user *created_timer_id);
523 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
524  struct compat_itimerspec __user *new,
525  struct compat_itimerspec __user *old);
526 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
527  struct compat_itimerspec __user *setting);
528 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
529  struct compat_timespec __user *tp);
530 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
531  struct compat_timespec __user *tp);
532 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
533  struct compat_timex __user *tp);
534 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
535  struct compat_timespec __user *tp);
536 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
537  struct compat_timespec __user *rqtp,
538  struct compat_timespec __user *rmtp);
539 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
540  struct compat_siginfo __user *uinfo,
541  struct compat_timespec __user *uts, compat_size_t sigsetsize);
542 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
543  compat_size_t sigsetsize);
544 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
545 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
546  unsigned long arg);
547 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
548  struct compat_timespec __user *utime, u32 __user *uaddr2,
549  u32 val3);
550 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
551  char __user *optval, int __user *optlen);
552 asmlinkage long compat_sys_kexec_load(unsigned long entry,
553  unsigned long nr_segments,
554  struct compat_kexec_segment __user *,
555  unsigned long flags);
556 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
557  const struct compat_mq_attr __user *u_mqstat,
558  struct compat_mq_attr __user *u_omqstat);
559 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
560  const struct compat_sigevent __user *u_notification);
561 asmlinkage long compat_sys_mq_open(const char __user *u_name,
562  int oflag, compat_mode_t mode,
563  struct compat_mq_attr __user *u_attr);
564 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
565  const char __user *u_msg_ptr,
566  size_t msg_len, unsigned int msg_prio,
567  const struct compat_timespec __user *u_abs_timeout);
568 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
569  char __user *u_msg_ptr,
570  size_t msg_len, unsigned int __user *u_msg_prio,
571  const struct compat_timespec __user *u_abs_timeout);
572 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
573 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
574 
575 extern ssize_t compat_rw_copy_check_uvector(int type,
576  const struct compat_iovec __user *uvector,
577  unsigned long nr_segs,
578  unsigned long fast_segs, struct iovec *fast_pointer,
579  struct iovec **ret_pointer);
580 
581 extern void __user *compat_alloc_user_space(unsigned long len);
582 
583 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
584  const struct compat_iovec __user *lvec,
585  unsigned long liovcnt, const struct compat_iovec __user *rvec,
586  unsigned long riovcnt, unsigned long flags);
587 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
588  const struct compat_iovec __user *lvec,
589  unsigned long liovcnt, const struct compat_iovec __user *rvec,
590  unsigned long riovcnt, unsigned long flags);
591 
592 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
593  compat_off_t __user *offset, compat_size_t count);
594 
595 #else
596 
597 #define is_compat_task() (0)
598 
599 #endif /* CONFIG_COMPAT */
600 #endif /* _LINUX_COMPAT_H */
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