1 #ifndef _LINUX_COMPAT_H
2 #define _LINUX_COMPAT_H
4 * These are the type definitions for the architecture specific
5 * syscall compatibility layer.
8 #include <linux/types.h>
12 #include <linux/stat.h>
13 #include <linux/param.h> /* for HZ */
14 #include <linux/sem.h>
15 #include <linux/socket.h>
18 #include <linux/aio_abi.h> /* for aio_context_t */
19 #include <linux/unistd.h>
21 #include <asm/compat.h>
22 #include <asm/siginfo.h>
23 #include <asm/signal.h>
25 #ifndef COMPAT_USE_64BIT_TIME
26 #define COMPAT_USE_64BIT_TIME 0
30 #define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
33 #define COMPAT_SYSCALL_DEFINE0(name) \
34 asmlinkage long compat_sys_##name(void)
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__)
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__))\
56 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
58 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
60 #ifndef compat_user_stack_pointer
61 #define compat_user_stack_pointer() current_user_stack_pointer()
63 #ifndef compat_sigaltstack /* we'll need that for MIPS */
64 typedef struct compat_sigaltstack {
67 compat_size_t ss_size;
71 #define compat_jiffies_to_clock_t(x) \
72 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
74 typedef __compat_uid32_t compat_uid_t;
75 typedef __compat_gid32_t compat_gid_t;
77 typedef compat_ulong_t compat_aio_context_t;
79 struct compat_sel_arg_struct;
82 struct compat_itimerspec {
83 struct compat_timespec it_interval;
84 struct compat_timespec it_value;
87 struct compat_utimbuf {
89 compat_time_t modtime;
92 struct compat_itimerval {
93 struct compat_timeval it_interval;
94 struct compat_timeval it_value;
98 int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *);
99 int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *);
102 compat_clock_t tms_utime;
103 compat_clock_t tms_stime;
104 compat_clock_t tms_cutime;
105 compat_clock_t tms_cstime;
108 struct compat_timex {
110 compat_long_t offset;
112 compat_long_t maxerror;
113 compat_long_t esterror;
115 compat_long_t constant;
116 compat_long_t precision;
117 compat_long_t tolerance;
118 struct compat_timeval time;
120 compat_long_t ppsfreq;
121 compat_long_t jitter;
123 compat_long_t stabil;
124 compat_long_t jitcnt;
125 compat_long_t calcnt;
126 compat_long_t errcnt;
127 compat_long_t stbcnt;
130 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
131 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
132 compat_int_t:32; compat_int_t:32; compat_int_t:32;
136 int compat_get_timex(struct timex *, const struct compat_timex __user *);
137 int compat_put_timex(struct compat_timex __user *, const struct timex *);
139 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
142 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
145 struct compat_sigaction {
146 #ifndef __ARCH_HAS_IRIX_SIGACTION
147 compat_uptr_t sa_handler;
148 compat_ulong_t sa_flags;
150 compat_uint_t sa_flags;
151 compat_uptr_t sa_handler;
153 #ifdef __ARCH_HAS_SA_RESTORER
154 compat_uptr_t sa_restorer;
156 compat_sigset_t sa_mask __packed;
160 * These functions operate on 32- or 64-bit specs depending on
161 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
163 extern int compat_get_timespec(struct timespec *, const void __user *);
164 extern int compat_put_timespec(const struct timespec *, void __user *);
165 extern int compat_get_timeval(struct timeval *, const void __user *);
166 extern int compat_put_timeval(const struct timeval *, void __user *);
169 * This function convert a timespec if necessary and returns a *user
170 * space* pointer. If no conversion is necessary, it returns the
171 * initial pointer. NULL is a legitimate argument and will always
174 extern int compat_convert_timespec(struct timespec __user **,
175 const void __user *);
177 struct compat_iovec {
178 compat_uptr_t iov_base;
179 compat_size_t iov_len;
182 struct compat_rlimit {
183 compat_ulong_t rlim_cur;
184 compat_ulong_t rlim_max;
187 struct compat_rusage {
188 struct compat_timeval ru_utime;
189 struct compat_timeval ru_stime;
190 compat_long_t ru_maxrss;
191 compat_long_t ru_ixrss;
192 compat_long_t ru_idrss;
193 compat_long_t ru_isrss;
194 compat_long_t ru_minflt;
195 compat_long_t ru_majflt;
196 compat_long_t ru_nswap;
197 compat_long_t ru_inblock;
198 compat_long_t ru_oublock;
199 compat_long_t ru_msgsnd;
200 compat_long_t ru_msgrcv;
201 compat_long_t ru_nsignals;
202 compat_long_t ru_nvcsw;
203 compat_long_t ru_nivcsw;
206 extern int put_compat_rusage(const struct rusage *,
207 struct compat_rusage __user *);
209 struct compat_siginfo;
211 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
212 struct compat_siginfo __user *, int,
213 struct compat_rusage __user *);
215 struct compat_dirent {
222 struct compat_ustat {
223 compat_daddr_t f_tfree;
224 compat_ino_t f_tinode;
229 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
231 typedef struct compat_sigevent {
232 compat_sigval_t sigev_value;
233 compat_int_t sigev_signo;
234 compat_int_t sigev_notify;
236 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
240 compat_uptr_t _function;
241 compat_uptr_t _attribute;
246 struct compat_ifmap {
247 compat_ulong_t mem_start;
248 compat_ulong_t mem_end;
249 unsigned short base_addr;
255 struct compat_if_settings {
256 unsigned int type; /* Type of physical device or protocol */
257 unsigned int size; /* Size of the data allocated by the caller */
258 compat_uptr_t ifs_ifsu; /* union of pointers */
261 struct compat_ifreq {
263 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
266 struct sockaddr ifru_addr;
267 struct sockaddr ifru_dstaddr;
268 struct sockaddr ifru_broadaddr;
269 struct sockaddr ifru_netmask;
270 struct sockaddr ifru_hwaddr;
272 compat_int_t ifru_ivalue;
273 compat_int_t ifru_mtu;
274 struct compat_ifmap ifru_map;
275 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
276 char ifru_newname[IFNAMSIZ];
277 compat_caddr_t ifru_data;
278 struct compat_if_settings ifru_settings;
282 struct compat_ifconf {
283 compat_int_t ifc_len; /* size of buffer */
284 compat_caddr_t ifcbuf;
287 struct compat_robust_list {
291 struct compat_robust_list_head {
292 struct compat_robust_list list;
293 compat_long_t futex_offset;
294 compat_uptr_t list_op_pending;
297 #ifdef CONFIG_COMPAT_OLD_SIGACTION
298 struct compat_old_sigaction {
299 compat_uptr_t sa_handler;
300 compat_old_sigset_t sa_mask;
301 compat_ulong_t sa_flags;
302 compat_uptr_t sa_restorer;
306 struct compat_keyctl_kdf_params {
307 compat_uptr_t hashname;
308 compat_uptr_t otherinfo;
313 struct compat_statfs;
314 struct compat_statfs64;
315 struct compat_old_linux_dirent;
316 struct compat_linux_dirent;
317 struct linux_dirent64;
318 struct compat_msghdr;
319 struct compat_mmsghdr;
320 struct compat_sysinfo;
321 struct compat_sysctl_args;
322 struct compat_kexec_segment;
323 struct compat_mq_attr;
324 struct compat_msgbuf;
326 extern void compat_exit_robust_list(struct task_struct *curr);
329 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
332 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
333 compat_size_t __user *len_ptr);
335 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
336 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
337 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
338 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
339 compat_ssize_t msgsz, int msgflg);
340 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
341 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
342 long compat_sys_msgctl(int first, int second, void __user *uptr);
343 long compat_sys_shmctl(int first, int second, void __user *uptr);
344 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
345 unsigned nsems, const struct compat_timespec __user *timeout);
346 asmlinkage long compat_sys_keyctl(u32 option,
347 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
348 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
350 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
351 const struct compat_iovec __user *vec, compat_ulong_t vlen);
352 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
353 const struct compat_iovec __user *vec, compat_ulong_t vlen);
354 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
355 const struct compat_iovec __user *vec,
356 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
357 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
358 const struct compat_iovec __user *vec,
359 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
360 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
361 const struct compat_iovec __user *vec,
362 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
363 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
364 const struct compat_iovec __user *vec,
365 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
367 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
368 asmlinkage long compat_sys_preadv64(unsigned long fd,
369 const struct compat_iovec __user *vec,
370 unsigned long vlen, loff_t pos);
373 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
374 asmlinkage long compat_sys_pwritev64(unsigned long fd,
375 const struct compat_iovec __user *vec,
376 unsigned long vlen, loff_t pos);
379 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
381 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
382 const compat_uptr_t __user *envp);
383 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
384 const compat_uptr_t __user *argv,
385 const compat_uptr_t __user *envp, int flags);
387 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
388 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
389 struct compat_timeval __user *tvp);
391 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
393 asmlinkage long compat_sys_wait4(compat_pid_t pid,
394 compat_uint_t __user *stat_addr, int options,
395 struct compat_rusage __user *ru);
397 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
399 #define BITS_TO_COMPAT_LONGS(bits) \
400 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
402 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
403 unsigned long bitmap_size);
404 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
405 unsigned long bitmap_size);
406 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
407 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
408 int get_compat_sigevent(struct sigevent *event,
409 const struct compat_sigevent __user *u_event);
410 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
411 struct compat_siginfo __user *uinfo);
412 #ifdef CONFIG_COMPAT_OLD_SIGACTION
413 asmlinkage long compat_sys_sigaction(int sig,
414 const struct compat_old_sigaction __user *act,
415 struct compat_old_sigaction __user *oact);
418 static inline int compat_timeval_compare(struct compat_timeval *lhs,
419 struct compat_timeval *rhs)
421 if (lhs->tv_sec < rhs->tv_sec)
423 if (lhs->tv_sec > rhs->tv_sec)
425 return lhs->tv_usec - rhs->tv_usec;
428 static inline int compat_timespec_compare(struct compat_timespec *lhs,
429 struct compat_timespec *rhs)
431 if (lhs->tv_sec < rhs->tv_sec)
433 if (lhs->tv_sec > rhs->tv_sec)
435 return lhs->tv_nsec - rhs->tv_nsec;
438 extern int get_compat_itimerspec(struct itimerspec *dst,
439 const struct compat_itimerspec __user *src);
440 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
441 const struct itimerspec *src);
443 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
444 struct timezone __user *tz);
445 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
446 struct timezone __user *tz);
448 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
450 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat);
451 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set);
453 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
454 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
455 const compat_ulong_t __user *new_nodes);
457 extern int compat_ptrace_request(struct task_struct *child,
458 compat_long_t request,
459 compat_ulong_t addr, compat_ulong_t data);
461 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
462 compat_ulong_t addr, compat_ulong_t data);
463 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
464 compat_long_t addr, compat_long_t data);
466 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
468 * epoll (fs/eventpoll.c) compat bits follow ...
470 struct epoll_event; /* fortunately, this one is fixed-layout */
471 asmlinkage long compat_sys_epoll_pwait(int epfd,
472 struct epoll_event __user *events,
473 int maxevents, int timeout,
474 const compat_sigset_t __user *sigmask,
475 compat_size_t sigsetsize);
477 asmlinkage long compat_sys_utime(const char __user *filename,
478 struct compat_utimbuf __user *t);
479 asmlinkage long compat_sys_utimensat(unsigned int dfd,
480 const char __user *filename,
481 struct compat_timespec __user *t,
484 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
485 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
486 asmlinkage long compat_sys_signalfd(int ufd,
487 const compat_sigset_t __user *sigmask,
488 compat_size_t sigsetsize);
489 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
490 const struct compat_itimerspec __user *utmr,
491 struct compat_itimerspec __user *otmr);
492 asmlinkage long compat_sys_timerfd_gettime(int ufd,
493 struct compat_itimerspec __user *otmr);
495 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
497 const int __user *nodes,
500 asmlinkage long compat_sys_futimesat(unsigned int dfd,
501 const char __user *filename,
502 struct compat_timeval __user *t);
503 asmlinkage long compat_sys_utimes(const char __user *filename,
504 struct compat_timeval __user *t);
505 asmlinkage long compat_sys_newstat(const char __user *filename,
506 struct compat_stat __user *statbuf);
507 asmlinkage long compat_sys_newlstat(const char __user *filename,
508 struct compat_stat __user *statbuf);
509 asmlinkage long compat_sys_newfstatat(unsigned int dfd,
510 const char __user *filename,
511 struct compat_stat __user *statbuf,
513 asmlinkage long compat_sys_newfstat(unsigned int fd,
514 struct compat_stat __user *statbuf);
515 asmlinkage long compat_sys_statfs(const char __user *pathname,
516 struct compat_statfs __user *buf);
517 asmlinkage long compat_sys_fstatfs(unsigned int fd,
518 struct compat_statfs __user *buf);
519 asmlinkage long compat_sys_statfs64(const char __user *pathname,
521 struct compat_statfs64 __user *buf);
522 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
523 struct compat_statfs64 __user *buf);
524 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
526 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
528 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
529 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id,
530 compat_long_t min_nr,
532 struct io_event __user *events,
533 struct compat_timespec __user *timeout);
534 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
536 asmlinkage long compat_sys_mount(const char __user *dev_name,
537 const char __user *dir_name,
538 const char __user *type, compat_ulong_t flags,
539 const void __user *data);
540 asmlinkage long compat_sys_old_readdir(unsigned int fd,
541 struct compat_old_linux_dirent __user *,
543 asmlinkage long compat_sys_getdents(unsigned int fd,
544 struct compat_linux_dirent __user *dirent,
546 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
547 unsigned int nr_segs, unsigned int flags);
548 asmlinkage long compat_sys_open(const char __user *filename, int flags,
550 asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
551 int flags, umode_t mode);
552 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
553 struct file_handle __user *handle,
555 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
556 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
557 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
558 compat_ulong_t __user *outp,
559 compat_ulong_t __user *exp,
560 struct compat_timespec __user *tsp,
562 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
564 struct compat_timespec __user *tsp,
565 const compat_sigset_t __user *sigmask,
566 compat_size_t sigsetsize);
567 asmlinkage long compat_sys_signalfd4(int ufd,
568 const compat_sigset_t __user *sigmask,
569 compat_size_t sigsetsize, int flags);
570 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
571 compat_ulong_t __user *nmask,
572 compat_ulong_t maxnode,
574 compat_ulong_t flags);
575 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
576 compat_ulong_t maxnode);
577 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
579 compat_ulong_t __user *nmask,
580 compat_ulong_t maxnode, compat_ulong_t flags);
582 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
583 char __user *optval, unsigned int optlen);
584 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
586 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
587 unsigned vlen, unsigned int flags);
588 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
590 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
592 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
593 unsigned flags, struct sockaddr __user *addr,
594 int __user *addrlen);
595 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
596 unsigned vlen, unsigned int flags,
597 struct compat_timespec __user *timeout);
598 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
599 struct compat_timespec __user *rmtp);
600 asmlinkage long compat_sys_getitimer(int which,
601 struct compat_itimerval __user *it);
602 asmlinkage long compat_sys_setitimer(int which,
603 struct compat_itimerval __user *in,
604 struct compat_itimerval __user *out);
605 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
606 asmlinkage long compat_sys_setrlimit(unsigned int resource,
607 struct compat_rlimit __user *rlim);
608 asmlinkage long compat_sys_getrlimit(unsigned int resource,
609 struct compat_rlimit __user *rlim);
610 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
611 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
613 compat_ulong_t __user *user_mask_ptr);
614 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
616 compat_ulong_t __user *user_mask_ptr);
617 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
618 struct compat_sigevent __user *timer_event_spec,
619 timer_t __user *created_timer_id);
620 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
621 struct compat_itimerspec __user *new,
622 struct compat_itimerspec __user *old);
623 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
624 struct compat_itimerspec __user *setting);
625 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
626 struct compat_timespec __user *tp);
627 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
628 struct compat_timespec __user *tp);
629 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
630 struct compat_timex __user *tp);
631 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
632 struct compat_timespec __user *tp);
633 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
634 struct compat_timespec __user *rqtp,
635 struct compat_timespec __user *rmtp);
636 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
637 struct compat_siginfo __user *uinfo,
638 struct compat_timespec __user *uts, compat_size_t sigsetsize);
639 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
640 compat_size_t sigsetsize);
641 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
642 compat_sigset_t __user *oset,
643 compat_size_t sigsetsize);
644 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
645 compat_size_t sigsetsize);
646 #ifndef CONFIG_ODD_RT_SIGACTION
647 asmlinkage long compat_sys_rt_sigaction(int,
648 const struct compat_sigaction __user *,
649 struct compat_sigaction __user *,
652 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
653 struct compat_siginfo __user *uinfo);
654 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
655 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
657 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
658 struct compat_timespec __user *utime, u32 __user *uaddr2,
660 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
661 char __user *optval, int __user *optlen);
662 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
663 compat_ulong_t nr_segments,
664 struct compat_kexec_segment __user *,
665 compat_ulong_t flags);
666 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
667 const struct compat_mq_attr __user *u_mqstat,
668 struct compat_mq_attr __user *u_omqstat);
669 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
670 const struct compat_sigevent __user *u_notification);
671 asmlinkage long compat_sys_mq_open(const char __user *u_name,
672 int oflag, compat_mode_t mode,
673 struct compat_mq_attr __user *u_attr);
674 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
675 const char __user *u_msg_ptr,
676 compat_size_t msg_len, unsigned int msg_prio,
677 const struct compat_timespec __user *u_abs_timeout);
678 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
679 char __user *u_msg_ptr,
680 compat_size_t msg_len, unsigned int __user *u_msg_prio,
681 const struct compat_timespec __user *u_abs_timeout);
682 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
683 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
685 extern ssize_t compat_rw_copy_check_uvector(int type,
686 const struct compat_iovec __user *uvector,
687 unsigned long nr_segs,
688 unsigned long fast_segs, struct iovec *fast_pointer,
689 struct iovec **ret_pointer);
691 extern void __user *compat_alloc_user_space(unsigned long len);
693 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
694 const struct compat_iovec __user *lvec,
695 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
696 compat_ulong_t riovcnt, compat_ulong_t flags);
697 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
698 const struct compat_iovec __user *lvec,
699 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
700 compat_ulong_t riovcnt, compat_ulong_t flags);
702 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
703 compat_off_t __user *offset, compat_size_t count);
704 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
705 compat_loff_t __user *offset, compat_size_t count);
706 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
707 compat_stack_t __user *uoss_ptr);
709 #ifdef __ARCH_WANT_SYS_SIGPENDING
710 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
713 #ifdef __ARCH_WANT_SYS_SIGPROCMASK
714 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
715 compat_old_sigset_t __user *oset);
718 int compat_restore_altstack(const compat_stack_t __user *uss);
719 int __compat_save_altstack(compat_stack_t __user *, unsigned long);
720 #define compat_save_altstack_ex(uss, sp) do { \
721 compat_stack_t __user *__uss = uss; \
722 struct task_struct *t = current; \
723 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
724 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
725 put_user_ex(t->sas_ss_size, &__uss->ss_size); \
726 if (t->sas_ss_flags & SS_AUTODISARM) \
730 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
731 struct compat_timespec __user *interval);
733 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
734 int, const char __user *);
736 asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2);
739 * For most but not all architectures, "am I in a compat syscall?" and
740 * "am I a compat task?" are the same question. For architectures on which
741 * they aren't the same question, arch code can override in_compat_syscall.
744 #ifndef in_compat_syscall
745 static inline bool in_compat_syscall(void) { return is_compat_task(); }
749 * ns_to_compat_timeval - Compat version of ns_to_timeval
750 * @nsec: the nanoseconds value to be converted
752 * Returns the compat_timeval representation of the nsec parameter.
754 static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
757 struct compat_timeval ctv;
759 tv = ns_to_timeval(nsec);
760 ctv.tv_sec = tv.tv_sec;
761 ctv.tv_usec = tv.tv_usec;
766 #else /* !CONFIG_COMPAT */
768 #define is_compat_task() (0)
769 static inline bool in_compat_syscall(void) { return false; }
771 #endif /* CONFIG_COMPAT */
773 #endif /* _LINUX_COMPAT_H */