compat.h revision 733deca197143857f938b41d671cd7ce9c53c4bc 
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
29typedef __compat_uid32_t	compat_uid_t;
30typedef __compat_gid32_t	compat_gid_t;
31
32struct compat_sel_arg_struct;
33struct rusage;
34
35struct compat_itimerspec {
36	struct compat_timespec it_interval;
37	struct compat_timespec it_value;
38};
39
40struct compat_utimbuf {
41	compat_time_t		actime;
42	compat_time_t		modtime;
43};
44
45struct compat_itimerval {
46	struct compat_timeval	it_interval;
47	struct compat_timeval	it_value;
48};
49
50struct 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
57struct 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
86typedef 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 */
93extern int get_compat_timespec(struct timespec *,
94			       const struct compat_timespec __user *);
95extern int put_compat_timespec(const struct timespec *,
96			       struct compat_timespec __user *);
97extern int get_compat_timeval(struct timeval *,
98			      const struct compat_timeval __user *);
99extern 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 */
106extern int compat_get_timespec(struct timespec *, const void __user *);
107extern int compat_put_timespec(const struct timespec *, void __user *);
108extern int compat_get_timeval(struct timeval *, const void __user *);
109extern int compat_put_timeval(const struct timeval *, void __user *);
110
111struct compat_iovec {
112	compat_uptr_t	iov_base;
113	compat_size_t	iov_len;
114};
115
116struct compat_rlimit {
117	compat_ulong_t	rlim_cur;
118	compat_ulong_t	rlim_max;
119};
120
121struct 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
140extern int put_compat_rusage(const struct rusage *,
141			     struct compat_rusage __user *);
142
143struct compat_siginfo;
144
145extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
146		struct compat_siginfo __user *, int,
147		struct compat_rusage __user *);
148
149struct compat_dirent {
150	u32		d_ino;
151	compat_off_t	d_off;
152	u16		d_reclen;
153	char		d_name[256];
154};
155
156struct 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
165typedef 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
180struct 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
189struct 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
195struct 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
216struct compat_ifconf {
217	compat_int_t	ifc_len;                /* size of buffer */
218	compat_caddr_t  ifcbuf;
219};
220
221struct compat_robust_list {
222	compat_uptr_t			next;
223};
224
225struct 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
231struct compat_statfs;
232struct compat_statfs64;
233struct compat_old_linux_dirent;
234struct compat_linux_dirent;
235struct linux_dirent64;
236struct compat_msghdr;
237struct compat_mmsghdr;
238struct compat_sysinfo;
239struct compat_sysctl_args;
240struct compat_kexec_segment;
241struct compat_mq_attr;
242struct compat_msgbuf;
243
244extern void compat_exit_robust_list(struct task_struct *curr);
245
246asmlinkage long
247compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
248			   compat_size_t len);
249asmlinkage long
250compat_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
254long compat_sys_semctl(int first, int second, int third, void __user *uptr);
255long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
256long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
257		int version, void __user *uptr);
258long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
259		void __user *uptr);
260#else
261long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
262long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
263		compat_ssize_t msgsz, int msgflg);
264long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
265		compat_ssize_t msgsz, long msgtyp, int msgflg);
266long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
267#endif
268long compat_sys_msgctl(int first, int second, void __user *uptr);
269long compat_sys_shmctl(int first, int second, void __user *uptr);
270long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
271		unsigned nsems, const struct compat_timespec __user *timeout);
272asmlinkage long compat_sys_keyctl(u32 option,
273			      u32 arg2, u32 arg3, u32 arg4, u32 arg5);
274asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
275
276asmlinkage ssize_t compat_sys_readv(unsigned long fd,
277		const struct compat_iovec __user *vec, unsigned long vlen);
278asmlinkage ssize_t compat_sys_writev(unsigned long fd,
279		const struct compat_iovec __user *vec, unsigned long vlen);
280asmlinkage 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);
283asmlinkage 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
287int compat_do_execve(const char *filename, const compat_uptr_t __user *argv,
288		     const compat_uptr_t __user *envp, struct pt_regs *regs);
289asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
290		     const compat_uptr_t __user *envp);
291
292asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
293		compat_ulong_t __user *outp, compat_ulong_t __user *exp,
294		struct compat_timeval __user *tvp);
295
296asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
297
298asmlinkage long compat_sys_wait4(compat_pid_t pid,
299				 compat_uint_t __user *stat_addr, int options,
300				 struct compat_rusage __user *ru);
301
302#define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
303
304#define BITS_TO_COMPAT_LONGS(bits) \
305	(((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
306
307long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
308		       unsigned long bitmap_size);
309long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
310		       unsigned long bitmap_size);
311int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
312int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
313int get_compat_sigevent(struct sigevent *event,
314		const struct compat_sigevent __user *u_event);
315long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
316				  struct compat_siginfo __user *uinfo);
317
318static inline int compat_timeval_compare(struct compat_timeval *lhs,
319					struct compat_timeval *rhs)
320{
321	if (lhs->tv_sec < rhs->tv_sec)
322		return -1;
323	if (lhs->tv_sec > rhs->tv_sec)
324		return 1;
325	return lhs->tv_usec - rhs->tv_usec;
326}
327
328static inline int compat_timespec_compare(struct compat_timespec *lhs,
329					struct compat_timespec *rhs)
330{
331	if (lhs->tv_sec < rhs->tv_sec)
332		return -1;
333	if (lhs->tv_sec > rhs->tv_sec)
334		return 1;
335	return lhs->tv_nsec - rhs->tv_nsec;
336}
337
338extern int get_compat_itimerspec(struct itimerspec *dst,
339				 const struct compat_itimerspec __user *src);
340extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
341				 const struct itimerspec *src);
342
343asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
344		struct timezone __user *tz);
345asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
346		struct timezone __user *tz);
347
348asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
349
350extern int compat_printk(const char *fmt, ...);
351extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
352
353asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
354		compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
355		const compat_ulong_t __user *new_nodes);
356
357extern int compat_ptrace_request(struct task_struct *child,
358				 compat_long_t request,
359				 compat_ulong_t addr, compat_ulong_t data);
360
361extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
362			       compat_ulong_t addr, compat_ulong_t data);
363asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
364				  compat_long_t addr, compat_long_t data);
365
366/*
367 * epoll (fs/eventpoll.c) compat bits follow ...
368 */
369struct epoll_event;
370#define compat_epoll_event	epoll_event
371asmlinkage long compat_sys_epoll_pwait(int epfd,
372			struct compat_epoll_event __user *events,
373			int maxevents, int timeout,
374			const compat_sigset_t __user *sigmask,
375			compat_size_t sigsetsize);
376
377asmlinkage long compat_sys_utime(const char __user *filename,
378				 struct compat_utimbuf __user *t);
379asmlinkage long compat_sys_utimensat(unsigned int dfd,
380				     const char __user *filename,
381				     struct compat_timespec __user *t,
382				     int flags);
383
384asmlinkage long compat_sys_time(compat_time_t __user *tloc);
385asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
386asmlinkage long compat_sys_signalfd(int ufd,
387				    const compat_sigset_t __user *sigmask,
388				    compat_size_t sigsetsize);
389asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
390				   const struct compat_itimerspec __user *utmr,
391				   struct compat_itimerspec __user *otmr);
392asmlinkage long compat_sys_timerfd_gettime(int ufd,
393				   struct compat_itimerspec __user *otmr);
394
395asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
396				      __u32 __user *pages,
397				      const int __user *nodes,
398				      int __user *status,
399				      int flags);
400asmlinkage long compat_sys_futimesat(unsigned int dfd,
401				     const char __user *filename,
402				     struct compat_timeval __user *t);
403asmlinkage long compat_sys_utimes(const char __user *filename,
404				  struct compat_timeval __user *t);
405asmlinkage long compat_sys_newstat(const char __user *filename,
406				   struct compat_stat __user *statbuf);
407asmlinkage long compat_sys_newlstat(const char __user *filename,
408				    struct compat_stat __user *statbuf);
409asmlinkage long compat_sys_newfstatat(unsigned int dfd,
410				      const char __user *filename,
411				      struct compat_stat __user *statbuf,
412				      int flag);
413asmlinkage long compat_sys_newfstat(unsigned int fd,
414				    struct compat_stat __user *statbuf);
415asmlinkage long compat_sys_statfs(const char __user *pathname,
416				  struct compat_statfs __user *buf);
417asmlinkage long compat_sys_fstatfs(unsigned int fd,
418				   struct compat_statfs __user *buf);
419asmlinkage long compat_sys_statfs64(const char __user *pathname,
420				    compat_size_t sz,
421				    struct compat_statfs64 __user *buf);
422asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
423				     struct compat_statfs64 __user *buf);
424asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
425				   unsigned long arg);
426asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
427				 unsigned long arg);
428asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
429asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
430					unsigned long min_nr,
431					unsigned long nr,
432					struct io_event __user *events,
433					struct compat_timespec __user *timeout);
434asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
435				     u32 __user *iocb);
436asmlinkage long compat_sys_mount(const char __user *dev_name,
437				 const char __user *dir_name,
438				 const char __user *type, unsigned long flags,
439				 const void __user *data);
440asmlinkage long compat_sys_old_readdir(unsigned int fd,
441				       struct compat_old_linux_dirent __user *,
442				       unsigned int count);
443asmlinkage long compat_sys_getdents(unsigned int fd,
444				    struct compat_linux_dirent __user *dirent,
445				    unsigned int count);
446asmlinkage long compat_sys_getdents64(unsigned int fd,
447				      struct linux_dirent64 __user *dirent,
448				      unsigned int count);
449asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
450				    unsigned int nr_segs, unsigned int flags);
451asmlinkage long compat_sys_open(const char __user *filename, int flags,
452				umode_t mode);
453asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
454				  int flags, umode_t mode);
455asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
456					     struct file_handle __user *handle,
457					     int flags);
458asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
459				    compat_ulong_t __user *outp,
460				    compat_ulong_t __user *exp,
461				    struct compat_timespec __user *tsp,
462				    void __user *sig);
463asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
464				 unsigned int nfds,
465				 struct compat_timespec __user *tsp,
466				 const compat_sigset_t __user *sigmask,
467				 compat_size_t sigsetsize);
468asmlinkage long compat_sys_signalfd4(int ufd,
469				     const compat_sigset_t __user *sigmask,
470				     compat_size_t sigsetsize, int flags);
471asmlinkage long compat_sys_get_mempolicy(int __user *policy,
472					 compat_ulong_t __user *nmask,
473					 compat_ulong_t maxnode,
474					 compat_ulong_t addr,
475					 compat_ulong_t flags);
476asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
477					 compat_ulong_t maxnode);
478asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
479				 compat_ulong_t mode,
480				 compat_ulong_t __user *nmask,
481				 compat_ulong_t maxnode, compat_ulong_t flags);
482
483asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
484				      char __user *optval, unsigned int optlen);
485asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
486				   unsigned flags);
487asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
488				    unsigned vlen, unsigned int flags);
489asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
490				   unsigned int flags);
491asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
492				unsigned flags);
493asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
494			    unsigned flags, struct sockaddr __user *addr,
495			    int __user *addrlen);
496asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
497				    unsigned vlen, unsigned int flags,
498				    struct compat_timespec __user *timeout);
499asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
500				     struct compat_timespec __user *rmtp);
501asmlinkage long compat_sys_getitimer(int which,
502				     struct compat_itimerval __user *it);
503asmlinkage long compat_sys_setitimer(int which,
504				     struct compat_itimerval __user *in,
505				     struct compat_itimerval __user *out);
506asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
507asmlinkage long compat_sys_setrlimit(unsigned int resource,
508				     struct compat_rlimit __user *rlim);
509asmlinkage long compat_sys_getrlimit(unsigned int resource,
510				     struct compat_rlimit __user *rlim);
511asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
512asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
513				     unsigned int len,
514				     compat_ulong_t __user *user_mask_ptr);
515asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
516				     unsigned int len,
517				     compat_ulong_t __user *user_mask_ptr);
518asmlinkage long compat_sys_timer_create(clockid_t which_clock,
519			struct compat_sigevent __user *timer_event_spec,
520			timer_t __user *created_timer_id);
521asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
522					 struct compat_itimerspec __user *new,
523					 struct compat_itimerspec __user *old);
524asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
525				 struct compat_itimerspec __user *setting);
526asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
527					 struct compat_timespec __user *tp);
528asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
529					 struct compat_timespec __user *tp);
530asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
531					 struct compat_timex __user *tp);
532asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
533					struct compat_timespec __user *tp);
534asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
535					   struct compat_timespec __user *rqtp,
536					   struct compat_timespec __user *rmtp);
537asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
538		struct compat_siginfo __user *uinfo,
539		struct compat_timespec __user *uts, compat_size_t sigsetsize);
540asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
541					 compat_size_t sigsetsize);
542asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
543asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
544				 unsigned long arg);
545asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
546		struct compat_timespec __user *utime, u32 __user *uaddr2,
547		u32 val3);
548asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
549				      char __user *optval, int __user *optlen);
550asmlinkage long compat_sys_kexec_load(unsigned long entry,
551				      unsigned long nr_segments,
552				      struct compat_kexec_segment __user *,
553				      unsigned long flags);
554asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
555			const struct compat_mq_attr __user *u_mqstat,
556			struct compat_mq_attr __user *u_omqstat);
557asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
558			const struct compat_sigevent __user *u_notification);
559asmlinkage long compat_sys_mq_open(const char __user *u_name,
560			int oflag, compat_mode_t mode,
561			struct compat_mq_attr __user *u_attr);
562asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
563			const char __user *u_msg_ptr,
564			size_t msg_len, unsigned int msg_prio,
565			const struct compat_timespec __user *u_abs_timeout);
566asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
567			char __user *u_msg_ptr,
568			size_t msg_len, unsigned int __user *u_msg_prio,
569			const struct compat_timespec __user *u_abs_timeout);
570asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
571asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
572
573extern ssize_t compat_rw_copy_check_uvector(int type,
574		const struct compat_iovec __user *uvector,
575		unsigned long nr_segs,
576		unsigned long fast_segs, struct iovec *fast_pointer,
577		struct iovec **ret_pointer);
578
579extern void __user *compat_alloc_user_space(unsigned long len);
580
581asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
582		const struct compat_iovec __user *lvec,
583		unsigned long liovcnt, const struct compat_iovec __user *rvec,
584		unsigned long riovcnt, unsigned long flags);
585asmlinkage ssize_t compat_sys_process_vm_writev(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
590asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
591				    compat_off_t __user *offset, compat_size_t count);
592
593#else
594
595#define is_compat_task() (0)
596
597#endif /* CONFIG_COMPAT */
598#endif /* _LINUX_COMPAT_H */
599