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TOMOYO Linux Cross Reference
Linux/include/linux/compat.h

Version: ~ [ linux-5.9-rc6 ] ~ [ linux-5.8.10 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.66 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.146 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.198 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.236 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.236 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 #include <linux/types.h>
  9 
 10 #ifdef CONFIG_COMPAT
 11 
 12 #include <linux/stat.h>
 13 #include <linux/param.h>        /* for HZ */
 14 #include <linux/sem.h>
 15 #include <linux/socket.h>
 16 #include <linux/if.h>
 17 #include <linux/fs.h>
 18 #include <linux/aio_abi.h>      /* for aio_context_t */
 19 #include <linux/unistd.h>
 20 
 21 #include <asm/compat.h>
 22 #include <asm/siginfo.h>
 23 #include <asm/signal.h>
 24 
 25 #ifndef COMPAT_USE_64BIT_TIME
 26 #define COMPAT_USE_64BIT_TIME 0
 27 #endif
 28 
 29 #ifndef __SC_DELOUSE
 30 #define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
 31 #endif
 32 
 33 #define COMPAT_SYSCALL_DEFINE0(name) \
 34         asmlinkage long compat_sys_##name(void)
 35 
 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 #define COMPAT_SYSCALL_DEFINEx(x, name, ...)                            \
 50         asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
 51                 __attribute__((alias(__stringify(compat_SyS##name))));  \
 52         static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
 53         asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
 54         asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
 55         {                                                               \
 56                 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
 57         }                                                               \
 58         static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
 59 
 60 #ifndef compat_user_stack_pointer
 61 #define compat_user_stack_pointer() current_user_stack_pointer()
 62 #endif
 63 #ifndef compat_sigaltstack      /* we'll need that for MIPS */
 64 typedef struct compat_sigaltstack {
 65         compat_uptr_t                   ss_sp;
 66         int                             ss_flags;
 67         compat_size_t                   ss_size;
 68 } compat_stack_t;
 69 #endif
 70 
 71 #define compat_jiffies_to_clock_t(x)    \
 72                 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
 73 
 74 typedef __compat_uid32_t        compat_uid_t;
 75 typedef __compat_gid32_t        compat_gid_t;
 76 
 77 typedef compat_ulong_t          compat_aio_context_t;
 78 
 79 struct compat_sel_arg_struct;
 80 struct rusage;
 81 
 82 struct compat_itimerspec {
 83         struct compat_timespec it_interval;
 84         struct compat_timespec it_value;
 85 };
 86 
 87 struct compat_utimbuf {
 88         compat_time_t           actime;
 89         compat_time_t           modtime;
 90 };
 91 
 92 struct compat_itimerval {
 93         struct compat_timeval   it_interval;
 94         struct compat_timeval   it_value;
 95 };
 96 
 97 struct compat_tms {
 98         compat_clock_t          tms_utime;
 99         compat_clock_t          tms_stime;
100         compat_clock_t          tms_cutime;
101         compat_clock_t          tms_cstime;
102 };
103 
104 struct compat_timex {
105         compat_uint_t modes;
106         compat_long_t offset;
107         compat_long_t freq;
108         compat_long_t maxerror;
109         compat_long_t esterror;
110         compat_int_t status;
111         compat_long_t constant;
112         compat_long_t precision;
113         compat_long_t tolerance;
114         struct compat_timeval time;
115         compat_long_t tick;
116         compat_long_t ppsfreq;
117         compat_long_t jitter;
118         compat_int_t shift;
119         compat_long_t stabil;
120         compat_long_t jitcnt;
121         compat_long_t calcnt;
122         compat_long_t errcnt;
123         compat_long_t stbcnt;
124         compat_int_t tai;
125 
126         compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
127         compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
128         compat_int_t:32; compat_int_t:32; compat_int_t:32;
129 };
130 
131 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
132 
133 typedef struct {
134         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
135 } compat_sigset_t;
136 
137 struct compat_sigaction {
138 #ifndef __ARCH_HAS_IRIX_SIGACTION
139         compat_uptr_t                   sa_handler;
140         compat_ulong_t                  sa_flags;
141 #else
142         compat_uint_t                   sa_flags;
143         compat_uptr_t                   sa_handler;
144 #endif
145 #ifdef __ARCH_HAS_SA_RESTORER
146         compat_uptr_t                   sa_restorer;
147 #endif
148         compat_sigset_t                 sa_mask __packed;
149 };
150 
151 /*
152  * These functions operate on 32- or 64-bit specs depending on
153  * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
154  */
155 extern int compat_get_timespec(struct timespec *, const void __user *);
156 extern int compat_put_timespec(const struct timespec *, void __user *);
157 extern int compat_get_timeval(struct timeval *, const void __user *);
158 extern int compat_put_timeval(const struct timeval *, void __user *);
159 
160 /*
161  * This function convert a timespec if necessary and returns a *user
162  * space* pointer.  If no conversion is necessary, it returns the
163  * initial pointer.  NULL is a legitimate argument and will always
164  * output NULL.
165  */
166 extern int compat_convert_timespec(struct timespec __user **,
167                                    const void __user *);
168 
169 struct compat_iovec {
170         compat_uptr_t   iov_base;
171         compat_size_t   iov_len;
172 };
173 
174 struct compat_rlimit {
175         compat_ulong_t  rlim_cur;
176         compat_ulong_t  rlim_max;
177 };
178 
179 struct compat_rusage {
180         struct compat_timeval ru_utime;
181         struct compat_timeval ru_stime;
182         compat_long_t   ru_maxrss;
183         compat_long_t   ru_ixrss;
184         compat_long_t   ru_idrss;
185         compat_long_t   ru_isrss;
186         compat_long_t   ru_minflt;
187         compat_long_t   ru_majflt;
188         compat_long_t   ru_nswap;
189         compat_long_t   ru_inblock;
190         compat_long_t   ru_oublock;
191         compat_long_t   ru_msgsnd;
192         compat_long_t   ru_msgrcv;
193         compat_long_t   ru_nsignals;
194         compat_long_t   ru_nvcsw;
195         compat_long_t   ru_nivcsw;
196 };
197 
198 extern int put_compat_rusage(const struct rusage *,
199                              struct compat_rusage __user *);
200 
201 struct compat_siginfo;
202 
203 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
204                 struct compat_siginfo __user *, int,
205                 struct compat_rusage __user *);
206 
207 struct compat_dirent {
208         u32             d_ino;
209         compat_off_t    d_off;
210         u16             d_reclen;
211         char            d_name[256];
212 };
213 
214 struct compat_ustat {
215         compat_daddr_t          f_tfree;
216         compat_ino_t            f_tinode;
217         char                    f_fname[6];
218         char                    f_fpack[6];
219 };
220 
221 #define COMPAT_SIGEV_PAD_SIZE   ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
222 
223 typedef struct compat_sigevent {
224         compat_sigval_t sigev_value;
225         compat_int_t sigev_signo;
226         compat_int_t sigev_notify;
227         union {
228                 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
229                 compat_int_t _tid;
230 
231                 struct {
232                         compat_uptr_t _function;
233                         compat_uptr_t _attribute;
234                 } _sigev_thread;
235         } _sigev_un;
236 } compat_sigevent_t;
237 
238 struct compat_ifmap {
239         compat_ulong_t mem_start;
240         compat_ulong_t mem_end;
241         unsigned short base_addr;
242         unsigned char irq;
243         unsigned char dma;
244         unsigned char port;
245 };
246 
247 struct compat_if_settings {
248         unsigned int type;      /* Type of physical device or protocol */
249         unsigned int size;      /* Size of the data allocated by the caller */
250         compat_uptr_t ifs_ifsu; /* union of pointers */
251 };
252 
253 struct compat_ifreq {
254         union {
255                 char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
256         } ifr_ifrn;
257         union {
258                 struct  sockaddr ifru_addr;
259                 struct  sockaddr ifru_dstaddr;
260                 struct  sockaddr ifru_broadaddr;
261                 struct  sockaddr ifru_netmask;
262                 struct  sockaddr ifru_hwaddr;
263                 short   ifru_flags;
264                 compat_int_t    ifru_ivalue;
265                 compat_int_t    ifru_mtu;
266                 struct  compat_ifmap ifru_map;
267                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
268                 char    ifru_newname[IFNAMSIZ];
269                 compat_caddr_t  ifru_data;
270                 struct  compat_if_settings ifru_settings;
271         } ifr_ifru;
272 };
273 
274 struct compat_ifconf {
275         compat_int_t    ifc_len;                /* size of buffer */
276         compat_caddr_t  ifcbuf;
277 };
278 
279 struct compat_robust_list {
280         compat_uptr_t                   next;
281 };
282 
283 struct compat_robust_list_head {
284         struct compat_robust_list       list;
285         compat_long_t                   futex_offset;
286         compat_uptr_t                   list_op_pending;
287 };
288 
289 #ifdef CONFIG_COMPAT_OLD_SIGACTION
290 struct compat_old_sigaction {
291         compat_uptr_t                   sa_handler;
292         compat_old_sigset_t             sa_mask;
293         compat_ulong_t                  sa_flags;
294         compat_uptr_t                   sa_restorer;
295 };
296 #endif
297 
298 struct compat_statfs;
299 struct compat_statfs64;
300 struct compat_old_linux_dirent;
301 struct compat_linux_dirent;
302 struct linux_dirent64;
303 struct compat_msghdr;
304 struct compat_mmsghdr;
305 struct compat_sysinfo;
306 struct compat_sysctl_args;
307 struct compat_kexec_segment;
308 struct compat_mq_attr;
309 struct compat_msgbuf;
310 
311 extern void compat_exit_robust_list(struct task_struct *curr);
312 
313 asmlinkage long
314 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
315                            compat_size_t len);
316 asmlinkage long
317 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
318                            compat_size_t __user *len_ptr);
319 
320 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
321 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
322 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
323 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
324                 compat_ssize_t msgsz, int msgflg);
325 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
326                 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
327 long compat_sys_msgctl(int first, int second, void __user *uptr);
328 long compat_sys_shmctl(int first, int second, void __user *uptr);
329 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
330                 unsigned nsems, const struct compat_timespec __user *timeout);
331 asmlinkage long compat_sys_keyctl(u32 option,
332                               u32 arg2, u32 arg3, u32 arg4, u32 arg5);
333 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
334 
335 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
336                 const struct compat_iovec __user *vec, compat_ulong_t vlen);
337 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
338                 const struct compat_iovec __user *vec, compat_ulong_t vlen);
339 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
340                 const struct compat_iovec __user *vec,
341                 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
342 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
343                 const struct compat_iovec __user *vec,
344                 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
345 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
346                 const struct compat_iovec __user *vec,
347                 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
348 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
349                 const struct compat_iovec __user *vec,
350                 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
351 
352 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
353 asmlinkage long compat_sys_preadv64(unsigned long fd,
354                 const struct compat_iovec __user *vec,
355                 unsigned long vlen, loff_t pos);
356 #endif
357 
358 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
359 asmlinkage long compat_sys_pwritev64(unsigned long fd,
360                 const struct compat_iovec __user *vec,
361                 unsigned long vlen, loff_t pos);
362 #endif
363 
364 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
365 
366 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
367                      const compat_uptr_t __user *envp);
368 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
369                      const compat_uptr_t __user *argv,
370                      const compat_uptr_t __user *envp, int flags);
371 
372 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
373                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
374                 struct compat_timeval __user *tvp);
375 
376 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
377 
378 asmlinkage long compat_sys_wait4(compat_pid_t pid,
379                                  compat_uint_t __user *stat_addr, int options,
380                                  struct compat_rusage __user *ru);
381 
382 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
383 
384 #define BITS_TO_COMPAT_LONGS(bits) \
385         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
386 
387 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
388                        unsigned long bitmap_size);
389 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
390                        unsigned long bitmap_size);
391 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
392 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
393 int get_compat_sigevent(struct sigevent *event,
394                 const struct compat_sigevent __user *u_event);
395 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
396                                   struct compat_siginfo __user *uinfo);
397 #ifdef CONFIG_COMPAT_OLD_SIGACTION
398 asmlinkage long compat_sys_sigaction(int sig,
399                                    const struct compat_old_sigaction __user *act,
400                                    struct compat_old_sigaction __user *oact);
401 #endif
402 
403 static inline int compat_timeval_compare(struct compat_timeval *lhs,
404                                         struct compat_timeval *rhs)
405 {
406         if (lhs->tv_sec < rhs->tv_sec)
407                 return -1;
408         if (lhs->tv_sec > rhs->tv_sec)
409                 return 1;
410         return lhs->tv_usec - rhs->tv_usec;
411 }
412 
413 static inline int compat_timespec_compare(struct compat_timespec *lhs,
414                                         struct compat_timespec *rhs)
415 {
416         if (lhs->tv_sec < rhs->tv_sec)
417                 return -1;
418         if (lhs->tv_sec > rhs->tv_sec)
419                 return 1;
420         return lhs->tv_nsec - rhs->tv_nsec;
421 }
422 
423 extern int get_compat_itimerspec(struct itimerspec *dst,
424                                  const struct compat_itimerspec __user *src);
425 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
426                                  const struct itimerspec *src);
427 
428 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
429                 struct timezone __user *tz);
430 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
431                 struct timezone __user *tz);
432 
433 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
434 
435 extern __printf(1, 2) int compat_printk(const char *fmt, ...);
436 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat);
437 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set);
438 
439 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
440                 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
441                 const compat_ulong_t __user *new_nodes);
442 
443 extern int compat_ptrace_request(struct task_struct *child,
444                                  compat_long_t request,
445                                  compat_ulong_t addr, compat_ulong_t data);
446 
447 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
448                                compat_ulong_t addr, compat_ulong_t data);
449 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
450                                   compat_long_t addr, compat_long_t data);
451 
452 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
453 /*
454  * epoll (fs/eventpoll.c) compat bits follow ...
455  */
456 struct epoll_event;     /* fortunately, this one is fixed-layout */
457 asmlinkage long compat_sys_epoll_pwait(int epfd,
458                         struct epoll_event __user *events,
459                         int maxevents, int timeout,
460                         const compat_sigset_t __user *sigmask,
461                         compat_size_t sigsetsize);
462 
463 asmlinkage long compat_sys_utime(const char __user *filename,
464                                  struct compat_utimbuf __user *t);
465 asmlinkage long compat_sys_utimensat(unsigned int dfd,
466                                      const char __user *filename,
467                                      struct compat_timespec __user *t,
468                                      int flags);
469 
470 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
471 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
472 asmlinkage long compat_sys_signalfd(int ufd,
473                                     const compat_sigset_t __user *sigmask,
474                                     compat_size_t sigsetsize);
475 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
476                                    const struct compat_itimerspec __user *utmr,
477                                    struct compat_itimerspec __user *otmr);
478 asmlinkage long compat_sys_timerfd_gettime(int ufd,
479                                    struct compat_itimerspec __user *otmr);
480 
481 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
482                                       __u32 __user *pages,
483                                       const int __user *nodes,
484                                       int __user *status,
485                                       int flags);
486 asmlinkage long compat_sys_futimesat(unsigned int dfd,
487                                      const char __user *filename,
488                                      struct compat_timeval __user *t);
489 asmlinkage long compat_sys_utimes(const char __user *filename,
490                                   struct compat_timeval __user *t);
491 asmlinkage long compat_sys_newstat(const char __user *filename,
492                                    struct compat_stat __user *statbuf);
493 asmlinkage long compat_sys_newlstat(const char __user *filename,
494                                     struct compat_stat __user *statbuf);
495 asmlinkage long compat_sys_newfstatat(unsigned int dfd,
496                                       const char __user *filename,
497                                       struct compat_stat __user *statbuf,
498                                       int flag);
499 asmlinkage long compat_sys_newfstat(unsigned int fd,
500                                     struct compat_stat __user *statbuf);
501 asmlinkage long compat_sys_statfs(const char __user *pathname,
502                                   struct compat_statfs __user *buf);
503 asmlinkage long compat_sys_fstatfs(unsigned int fd,
504                                    struct compat_statfs __user *buf);
505 asmlinkage long compat_sys_statfs64(const char __user *pathname,
506                                     compat_size_t sz,
507                                     struct compat_statfs64 __user *buf);
508 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
509                                      struct compat_statfs64 __user *buf);
510 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
511                                    compat_ulong_t arg);
512 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
513                                  compat_ulong_t arg);
514 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
515 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id,
516                                         compat_long_t min_nr,
517                                         compat_long_t nr,
518                                         struct io_event __user *events,
519                                         struct compat_timespec __user *timeout);
520 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
521                                      u32 __user *iocb);
522 asmlinkage long compat_sys_mount(const char __user *dev_name,
523                                  const char __user *dir_name,
524                                  const char __user *type, compat_ulong_t flags,
525                                  const void __user *data);
526 asmlinkage long compat_sys_old_readdir(unsigned int fd,
527                                        struct compat_old_linux_dirent __user *,
528                                        unsigned int count);
529 asmlinkage long compat_sys_getdents(unsigned int fd,
530                                     struct compat_linux_dirent __user *dirent,
531                                     unsigned int count);
532 #ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64
533 asmlinkage long compat_sys_getdents64(unsigned int fd,
534                                       struct linux_dirent64 __user *dirent,
535                                       unsigned int count);
536 #endif
537 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
538                                     unsigned int nr_segs, unsigned int flags);
539 asmlinkage long compat_sys_open(const char __user *filename, int flags,
540                                 umode_t mode);
541 asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
542                                   int flags, umode_t mode);
543 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
544                                              struct file_handle __user *handle,
545                                              int flags);
546 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
547 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
548 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
549                                     compat_ulong_t __user *outp,
550                                     compat_ulong_t __user *exp,
551                                     struct compat_timespec __user *tsp,
552                                     void __user *sig);
553 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
554                                  unsigned int nfds,
555                                  struct compat_timespec __user *tsp,
556                                  const compat_sigset_t __user *sigmask,
557                                  compat_size_t sigsetsize);
558 asmlinkage long compat_sys_signalfd4(int ufd,
559                                      const compat_sigset_t __user *sigmask,
560                                      compat_size_t sigsetsize, int flags);
561 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
562                                          compat_ulong_t __user *nmask,
563                                          compat_ulong_t maxnode,
564                                          compat_ulong_t addr,
565                                          compat_ulong_t flags);
566 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
567                                          compat_ulong_t maxnode);
568 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
569                                  compat_ulong_t mode,
570                                  compat_ulong_t __user *nmask,
571                                  compat_ulong_t maxnode, compat_ulong_t flags);
572 
573 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
574                                       char __user *optval, unsigned int optlen);
575 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
576                                    unsigned flags);
577 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
578                                     unsigned vlen, unsigned int flags);
579 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
580                                    unsigned int flags);
581 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
582                                 unsigned flags);
583 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
584                             unsigned flags, struct sockaddr __user *addr,
585                             int __user *addrlen);
586 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
587                                     unsigned vlen, unsigned int flags,
588                                     struct compat_timespec __user *timeout);
589 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
590                                      struct compat_timespec __user *rmtp);
591 asmlinkage long compat_sys_getitimer(int which,
592                                      struct compat_itimerval __user *it);
593 asmlinkage long compat_sys_setitimer(int which,
594                                      struct compat_itimerval __user *in,
595                                      struct compat_itimerval __user *out);
596 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
597 asmlinkage long compat_sys_setrlimit(unsigned int resource,
598                                      struct compat_rlimit __user *rlim);
599 asmlinkage long compat_sys_getrlimit(unsigned int resource,
600                                      struct compat_rlimit __user *rlim);
601 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
602 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
603                                      unsigned int len,
604                                      compat_ulong_t __user *user_mask_ptr);
605 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
606                                      unsigned int len,
607                                      compat_ulong_t __user *user_mask_ptr);
608 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
609                         struct compat_sigevent __user *timer_event_spec,
610                         timer_t __user *created_timer_id);
611 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
612                                          struct compat_itimerspec __user *new,
613                                          struct compat_itimerspec __user *old);
614 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
615                                  struct compat_itimerspec __user *setting);
616 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
617                                          struct compat_timespec __user *tp);
618 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
619                                          struct compat_timespec __user *tp);
620 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
621                                          struct compat_timex __user *tp);
622 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
623                                         struct compat_timespec __user *tp);
624 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
625                                            struct compat_timespec __user *rqtp,
626                                            struct compat_timespec __user *rmtp);
627 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
628                 struct compat_siginfo __user *uinfo,
629                 struct compat_timespec __user *uts, compat_size_t sigsetsize);
630 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
631                                          compat_size_t sigsetsize);
632 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
633                                           compat_sigset_t __user *oset,
634                                           compat_size_t sigsetsize);
635 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
636                                          compat_size_t sigsetsize);
637 #ifndef CONFIG_ODD_RT_SIGACTION
638 asmlinkage long compat_sys_rt_sigaction(int,
639                                  const struct compat_sigaction __user *,
640                                  struct compat_sigaction __user *,
641                                  compat_size_t);
642 #endif
643 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
644                                 struct compat_siginfo __user *uinfo);
645 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
646 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
647                                  compat_ulong_t arg);
648 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
649                 struct compat_timespec __user *utime, u32 __user *uaddr2,
650                 u32 val3);
651 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
652                                       char __user *optval, int __user *optlen);
653 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
654                                       compat_ulong_t nr_segments,
655                                       struct compat_kexec_segment __user *,
656                                       compat_ulong_t flags);
657 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
658                         const struct compat_mq_attr __user *u_mqstat,
659                         struct compat_mq_attr __user *u_omqstat);
660 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
661                         const struct compat_sigevent __user *u_notification);
662 asmlinkage long compat_sys_mq_open(const char __user *u_name,
663                         int oflag, compat_mode_t mode,
664                         struct compat_mq_attr __user *u_attr);
665 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
666                         const char __user *u_msg_ptr,
667                         compat_size_t msg_len, unsigned int msg_prio,
668                         const struct compat_timespec __user *u_abs_timeout);
669 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
670                         char __user *u_msg_ptr,
671                         compat_size_t msg_len, unsigned int __user *u_msg_prio,
672                         const struct compat_timespec __user *u_abs_timeout);
673 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
674 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
675 
676 extern ssize_t compat_rw_copy_check_uvector(int type,
677                 const struct compat_iovec __user *uvector,
678                 unsigned long nr_segs,
679                 unsigned long fast_segs, struct iovec *fast_pointer,
680                 struct iovec **ret_pointer);
681 
682 extern void __user *compat_alloc_user_space(unsigned long len);
683 
684 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
685                 const struct compat_iovec __user *lvec,
686                 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
687                 compat_ulong_t riovcnt, compat_ulong_t flags);
688 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
689                 const struct compat_iovec __user *lvec,
690                 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
691                 compat_ulong_t riovcnt, compat_ulong_t flags);
692 
693 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
694                                     compat_off_t __user *offset, compat_size_t count);
695 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
696                                     compat_loff_t __user *offset, compat_size_t count);
697 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
698                                        compat_stack_t __user *uoss_ptr);
699 
700 #ifdef __ARCH_WANT_SYS_SIGPENDING
701 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
702 #endif
703 
704 #ifdef __ARCH_WANT_SYS_SIGPROCMASK
705 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
706                                        compat_old_sigset_t __user *oset);
707 #endif
708 
709 int compat_restore_altstack(const compat_stack_t __user *uss);
710 int __compat_save_altstack(compat_stack_t __user *, unsigned long);
711 #define compat_save_altstack_ex(uss, sp) do { \
712         compat_stack_t __user *__uss = uss; \
713         struct task_struct *t = current; \
714         put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
715         put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \
716         put_user_ex(t->sas_ss_size, &__uss->ss_size); \
717 } while (0);
718 
719 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
720                                                  struct compat_timespec __user *interval);
721 
722 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
723                                             int, const char __user *);
724 
725 /*
726  * For most but not all architectures, "am I in a compat syscall?" and
727  * "am I a compat task?" are the same question.  For architectures on which
728  * they aren't the same question, arch code can override in_compat_syscall.
729  */
730 
731 #ifndef in_compat_syscall
732 static inline bool in_compat_syscall(void) { return is_compat_task(); }
733 #endif
734 
735 #else
736 
737 #define is_compat_task() (0)
738 static inline bool in_compat_syscall(void) { return false; }
739 
740 #endif /* CONFIG_COMPAT */
741 
742 #endif /* _LINUX_COMPAT_H */
743 

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