compat.h revision 9b064fc3f95a8e44e929fdf4d6037334ea03d15b
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#ifndef __SC_DELOUSE
27#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
28#endif
29
30#define __SC_CCAST1(t1, a1)      __SC_DELOUSE(t1,a1)
31#define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__)
32#define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__)
33#define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__)
34#define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__)
35#define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__)
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#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
50
51#define COMPAT_SYSCALL_DEFINEx(x, name, ...)				\
52	asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__));	\
53	static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__));	\
54	asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__))	\
55	{								\
56		return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__));	\
57	}								\
58	SYSCALL_ALIAS(compat_sys##name, compat_SyS##name);		\
59	static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__))
60
61#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */
62
63#define COMPAT_SYSCALL_DEFINEx(x, name, ...)				\
64	asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__))
65
66#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */
67
68#ifndef compat_user_stack_pointer
69#define compat_user_stack_pointer() current_user_stack_pointer()
70#endif
71#define compat_jiffies_to_clock_t(x)	\
72		(((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
73
74typedef __compat_uid32_t	compat_uid_t;
75typedef __compat_gid32_t	compat_gid_t;
76
77struct compat_sel_arg_struct;
78struct rusage;
79
80struct compat_itimerspec {
81	struct compat_timespec it_interval;
82	struct compat_timespec it_value;
83};
84
85struct compat_utimbuf {
86	compat_time_t		actime;
87	compat_time_t		modtime;
88};
89
90struct compat_itimerval {
91	struct compat_timeval	it_interval;
92	struct compat_timeval	it_value;
93};
94
95struct compat_tms {
96	compat_clock_t		tms_utime;
97	compat_clock_t		tms_stime;
98	compat_clock_t		tms_cutime;
99	compat_clock_t		tms_cstime;
100};
101
102struct compat_timex {
103	compat_uint_t modes;
104	compat_long_t offset;
105	compat_long_t freq;
106	compat_long_t maxerror;
107	compat_long_t esterror;
108	compat_int_t status;
109	compat_long_t constant;
110	compat_long_t precision;
111	compat_long_t tolerance;
112	struct compat_timeval time;
113	compat_long_t tick;
114	compat_long_t ppsfreq;
115	compat_long_t jitter;
116	compat_int_t shift;
117	compat_long_t stabil;
118	compat_long_t jitcnt;
119	compat_long_t calcnt;
120	compat_long_t errcnt;
121	compat_long_t stbcnt;
122	compat_int_t tai;
123
124	compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
125	compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
126	compat_int_t:32; compat_int_t:32; compat_int_t:32;
127};
128
129#define _COMPAT_NSIG_WORDS	(_COMPAT_NSIG / _COMPAT_NSIG_BPW)
130
131typedef struct {
132	compat_sigset_word	sig[_COMPAT_NSIG_WORDS];
133} compat_sigset_t;
134
135/*
136 * These functions operate strictly on struct compat_time*
137 */
138extern int get_compat_timespec(struct timespec *,
139			       const struct compat_timespec __user *);
140extern int put_compat_timespec(const struct timespec *,
141			       struct compat_timespec __user *);
142extern int get_compat_timeval(struct timeval *,
143			      const struct compat_timeval __user *);
144extern int put_compat_timeval(const struct timeval *,
145			      struct compat_timeval __user *);
146/*
147 * These functions operate on 32- or 64-bit specs depending on
148 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
149 * naming as compat_get/put_ rather than get/put_compat_.
150 */
151extern int compat_get_timespec(struct timespec *, const void __user *);
152extern int compat_put_timespec(const struct timespec *, void __user *);
153extern int compat_get_timeval(struct timeval *, const void __user *);
154extern int compat_put_timeval(const struct timeval *, void __user *);
155
156struct compat_iovec {
157	compat_uptr_t	iov_base;
158	compat_size_t	iov_len;
159};
160
161struct compat_rlimit {
162	compat_ulong_t	rlim_cur;
163	compat_ulong_t	rlim_max;
164};
165
166struct compat_rusage {
167	struct compat_timeval ru_utime;
168	struct compat_timeval ru_stime;
169	compat_long_t	ru_maxrss;
170	compat_long_t	ru_ixrss;
171	compat_long_t	ru_idrss;
172	compat_long_t	ru_isrss;
173	compat_long_t	ru_minflt;
174	compat_long_t	ru_majflt;
175	compat_long_t	ru_nswap;
176	compat_long_t	ru_inblock;
177	compat_long_t	ru_oublock;
178	compat_long_t	ru_msgsnd;
179	compat_long_t	ru_msgrcv;
180	compat_long_t	ru_nsignals;
181	compat_long_t	ru_nvcsw;
182	compat_long_t	ru_nivcsw;
183};
184
185extern int put_compat_rusage(const struct rusage *,
186			     struct compat_rusage __user *);
187
188struct compat_siginfo;
189
190extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
191		struct compat_siginfo __user *, int,
192		struct compat_rusage __user *);
193
194struct compat_dirent {
195	u32		d_ino;
196	compat_off_t	d_off;
197	u16		d_reclen;
198	char		d_name[256];
199};
200
201struct compat_ustat {
202	compat_daddr_t		f_tfree;
203	compat_ino_t		f_tinode;
204	char			f_fname[6];
205	char			f_fpack[6];
206};
207
208#define COMPAT_SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int)) - 3)
209
210typedef struct compat_sigevent {
211	compat_sigval_t sigev_value;
212	compat_int_t sigev_signo;
213	compat_int_t sigev_notify;
214	union {
215		compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
216		compat_int_t _tid;
217
218		struct {
219			compat_uptr_t _function;
220			compat_uptr_t _attribute;
221		} _sigev_thread;
222	} _sigev_un;
223} compat_sigevent_t;
224
225struct compat_ifmap {
226	compat_ulong_t mem_start;
227	compat_ulong_t mem_end;
228	unsigned short base_addr;
229	unsigned char irq;
230	unsigned char dma;
231	unsigned char port;
232};
233
234struct compat_if_settings {
235	unsigned int type;	/* Type of physical device or protocol */
236	unsigned int size;	/* Size of the data allocated by the caller */
237	compat_uptr_t ifs_ifsu;	/* union of pointers */
238};
239
240struct compat_ifreq {
241	union {
242		char	ifrn_name[IFNAMSIZ];    /* if name, e.g. "en0" */
243	} ifr_ifrn;
244	union {
245		struct	sockaddr ifru_addr;
246		struct	sockaddr ifru_dstaddr;
247		struct	sockaddr ifru_broadaddr;
248		struct	sockaddr ifru_netmask;
249		struct	sockaddr ifru_hwaddr;
250		short	ifru_flags;
251		compat_int_t	ifru_ivalue;
252		compat_int_t	ifru_mtu;
253		struct	compat_ifmap ifru_map;
254		char	ifru_slave[IFNAMSIZ];   /* Just fits the size */
255		char	ifru_newname[IFNAMSIZ];
256		compat_caddr_t	ifru_data;
257		struct	compat_if_settings ifru_settings;
258	} ifr_ifru;
259};
260
261struct compat_ifconf {
262	compat_int_t	ifc_len;                /* size of buffer */
263	compat_caddr_t  ifcbuf;
264};
265
266struct compat_robust_list {
267	compat_uptr_t			next;
268};
269
270struct compat_robust_list_head {
271	struct compat_robust_list	list;
272	compat_long_t			futex_offset;
273	compat_uptr_t			list_op_pending;
274};
275
276struct compat_statfs;
277struct compat_statfs64;
278struct compat_old_linux_dirent;
279struct compat_linux_dirent;
280struct linux_dirent64;
281struct compat_msghdr;
282struct compat_mmsghdr;
283struct compat_sysinfo;
284struct compat_sysctl_args;
285struct compat_kexec_segment;
286struct compat_mq_attr;
287struct compat_msgbuf;
288
289extern void compat_exit_robust_list(struct task_struct *curr);
290
291asmlinkage long
292compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
293			   compat_size_t len);
294asmlinkage long
295compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
296			   compat_size_t __user *len_ptr);
297
298#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
299long compat_sys_semctl(int first, int second, int third, void __user *uptr);
300long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
301long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
302		int version, void __user *uptr);
303long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
304		void __user *uptr);
305#else
306long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
307long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
308		compat_ssize_t msgsz, int msgflg);
309long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
310		compat_ssize_t msgsz, long msgtyp, int msgflg);
311long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
312#endif
313long compat_sys_msgctl(int first, int second, void __user *uptr);
314long compat_sys_shmctl(int first, int second, void __user *uptr);
315long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
316		unsigned nsems, const struct compat_timespec __user *timeout);
317asmlinkage long compat_sys_keyctl(u32 option,
318			      u32 arg2, u32 arg3, u32 arg4, u32 arg5);
319asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
320
321asmlinkage ssize_t compat_sys_readv(unsigned long fd,
322		const struct compat_iovec __user *vec, unsigned long vlen);
323asmlinkage ssize_t compat_sys_writev(unsigned long fd,
324		const struct compat_iovec __user *vec, unsigned long vlen);
325asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
326		const struct compat_iovec __user *vec,
327		unsigned long vlen, u32 pos_low, u32 pos_high);
328asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
329		const struct compat_iovec __user *vec,
330		unsigned long vlen, u32 pos_low, u32 pos_high);
331
332asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
333		     const compat_uptr_t __user *envp);
334
335asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
336		compat_ulong_t __user *outp, compat_ulong_t __user *exp,
337		struct compat_timeval __user *tvp);
338
339asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
340
341asmlinkage long compat_sys_wait4(compat_pid_t pid,
342				 compat_uint_t __user *stat_addr, int options,
343				 struct compat_rusage __user *ru);
344
345#define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
346
347#define BITS_TO_COMPAT_LONGS(bits) \
348	(((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
349
350long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
351		       unsigned long bitmap_size);
352long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
353		       unsigned long bitmap_size);
354int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
355int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
356int get_compat_sigevent(struct sigevent *event,
357		const struct compat_sigevent __user *u_event);
358long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
359				  struct compat_siginfo __user *uinfo);
360
361static inline int compat_timeval_compare(struct compat_timeval *lhs,
362					struct compat_timeval *rhs)
363{
364	if (lhs->tv_sec < rhs->tv_sec)
365		return -1;
366	if (lhs->tv_sec > rhs->tv_sec)
367		return 1;
368	return lhs->tv_usec - rhs->tv_usec;
369}
370
371static inline int compat_timespec_compare(struct compat_timespec *lhs,
372					struct compat_timespec *rhs)
373{
374	if (lhs->tv_sec < rhs->tv_sec)
375		return -1;
376	if (lhs->tv_sec > rhs->tv_sec)
377		return 1;
378	return lhs->tv_nsec - rhs->tv_nsec;
379}
380
381extern int get_compat_itimerspec(struct itimerspec *dst,
382				 const struct compat_itimerspec __user *src);
383extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
384				 const struct itimerspec *src);
385
386asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
387		struct timezone __user *tz);
388asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
389		struct timezone __user *tz);
390
391asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
392
393extern int compat_printk(const char *fmt, ...);
394extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
395
396asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
397		compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
398		const compat_ulong_t __user *new_nodes);
399
400extern int compat_ptrace_request(struct task_struct *child,
401				 compat_long_t request,
402				 compat_ulong_t addr, compat_ulong_t data);
403
404extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
405			       compat_ulong_t addr, compat_ulong_t data);
406asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
407				  compat_long_t addr, compat_long_t data);
408
409/*
410 * epoll (fs/eventpoll.c) compat bits follow ...
411 */
412struct epoll_event;
413#define compat_epoll_event	epoll_event
414asmlinkage long compat_sys_epoll_pwait(int epfd,
415			struct compat_epoll_event __user *events,
416			int maxevents, int timeout,
417			const compat_sigset_t __user *sigmask,
418			compat_size_t sigsetsize);
419
420asmlinkage long compat_sys_utime(const char __user *filename,
421				 struct compat_utimbuf __user *t);
422asmlinkage long compat_sys_utimensat(unsigned int dfd,
423				     const char __user *filename,
424				     struct compat_timespec __user *t,
425				     int flags);
426
427asmlinkage long compat_sys_time(compat_time_t __user *tloc);
428asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
429asmlinkage long compat_sys_signalfd(int ufd,
430				    const compat_sigset_t __user *sigmask,
431				    compat_size_t sigsetsize);
432asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
433				   const struct compat_itimerspec __user *utmr,
434				   struct compat_itimerspec __user *otmr);
435asmlinkage long compat_sys_timerfd_gettime(int ufd,
436				   struct compat_itimerspec __user *otmr);
437
438asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
439				      __u32 __user *pages,
440				      const int __user *nodes,
441				      int __user *status,
442				      int flags);
443asmlinkage long compat_sys_futimesat(unsigned int dfd,
444				     const char __user *filename,
445				     struct compat_timeval __user *t);
446asmlinkage long compat_sys_utimes(const char __user *filename,
447				  struct compat_timeval __user *t);
448asmlinkage long compat_sys_newstat(const char __user *filename,
449				   struct compat_stat __user *statbuf);
450asmlinkage long compat_sys_newlstat(const char __user *filename,
451				    struct compat_stat __user *statbuf);
452asmlinkage long compat_sys_newfstatat(unsigned int dfd,
453				      const char __user *filename,
454				      struct compat_stat __user *statbuf,
455				      int flag);
456asmlinkage long compat_sys_newfstat(unsigned int fd,
457				    struct compat_stat __user *statbuf);
458asmlinkage long compat_sys_statfs(const char __user *pathname,
459				  struct compat_statfs __user *buf);
460asmlinkage long compat_sys_fstatfs(unsigned int fd,
461				   struct compat_statfs __user *buf);
462asmlinkage long compat_sys_statfs64(const char __user *pathname,
463				    compat_size_t sz,
464				    struct compat_statfs64 __user *buf);
465asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
466				     struct compat_statfs64 __user *buf);
467asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
468				   unsigned long arg);
469asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
470				 unsigned long arg);
471asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
472asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
473					unsigned long min_nr,
474					unsigned long nr,
475					struct io_event __user *events,
476					struct compat_timespec __user *timeout);
477asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
478				     u32 __user *iocb);
479asmlinkage long compat_sys_mount(const char __user *dev_name,
480				 const char __user *dir_name,
481				 const char __user *type, unsigned long flags,
482				 const void __user *data);
483asmlinkage long compat_sys_old_readdir(unsigned int fd,
484				       struct compat_old_linux_dirent __user *,
485				       unsigned int count);
486asmlinkage long compat_sys_getdents(unsigned int fd,
487				    struct compat_linux_dirent __user *dirent,
488				    unsigned int count);
489asmlinkage long compat_sys_getdents64(unsigned int fd,
490				      struct linux_dirent64 __user *dirent,
491				      unsigned int count);
492asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
493				    unsigned int nr_segs, unsigned int flags);
494asmlinkage long compat_sys_open(const char __user *filename, int flags,
495				umode_t mode);
496asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
497				  int flags, umode_t mode);
498asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
499					     struct file_handle __user *handle,
500					     int flags);
501asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
502				    compat_ulong_t __user *outp,
503				    compat_ulong_t __user *exp,
504				    struct compat_timespec __user *tsp,
505				    void __user *sig);
506asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
507				 unsigned int nfds,
508				 struct compat_timespec __user *tsp,
509				 const compat_sigset_t __user *sigmask,
510				 compat_size_t sigsetsize);
511asmlinkage long compat_sys_signalfd4(int ufd,
512				     const compat_sigset_t __user *sigmask,
513				     compat_size_t sigsetsize, int flags);
514asmlinkage long compat_sys_get_mempolicy(int __user *policy,
515					 compat_ulong_t __user *nmask,
516					 compat_ulong_t maxnode,
517					 compat_ulong_t addr,
518					 compat_ulong_t flags);
519asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
520					 compat_ulong_t maxnode);
521asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
522				 compat_ulong_t mode,
523				 compat_ulong_t __user *nmask,
524				 compat_ulong_t maxnode, compat_ulong_t flags);
525
526asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
527				      char __user *optval, unsigned int optlen);
528asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
529				   unsigned flags);
530asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
531				    unsigned vlen, unsigned int flags);
532asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
533				   unsigned int flags);
534asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
535				unsigned flags);
536asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
537			    unsigned flags, struct sockaddr __user *addr,
538			    int __user *addrlen);
539asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
540				    unsigned vlen, unsigned int flags,
541				    struct compat_timespec __user *timeout);
542asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
543				     struct compat_timespec __user *rmtp);
544asmlinkage long compat_sys_getitimer(int which,
545				     struct compat_itimerval __user *it);
546asmlinkage long compat_sys_setitimer(int which,
547				     struct compat_itimerval __user *in,
548				     struct compat_itimerval __user *out);
549asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
550asmlinkage long compat_sys_setrlimit(unsigned int resource,
551				     struct compat_rlimit __user *rlim);
552asmlinkage long compat_sys_getrlimit(unsigned int resource,
553				     struct compat_rlimit __user *rlim);
554asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
555asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
556				     unsigned int len,
557				     compat_ulong_t __user *user_mask_ptr);
558asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
559				     unsigned int len,
560				     compat_ulong_t __user *user_mask_ptr);
561asmlinkage long compat_sys_timer_create(clockid_t which_clock,
562			struct compat_sigevent __user *timer_event_spec,
563			timer_t __user *created_timer_id);
564asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
565					 struct compat_itimerspec __user *new,
566					 struct compat_itimerspec __user *old);
567asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
568				 struct compat_itimerspec __user *setting);
569asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
570					 struct compat_timespec __user *tp);
571asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
572					 struct compat_timespec __user *tp);
573asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
574					 struct compat_timex __user *tp);
575asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
576					struct compat_timespec __user *tp);
577asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
578					   struct compat_timespec __user *rqtp,
579					   struct compat_timespec __user *rmtp);
580asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
581		struct compat_siginfo __user *uinfo,
582		struct compat_timespec __user *uts, compat_size_t sigsetsize);
583asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
584					 compat_size_t sigsetsize);
585asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
586asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
587				 unsigned long arg);
588asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
589		struct compat_timespec __user *utime, u32 __user *uaddr2,
590		u32 val3);
591asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
592				      char __user *optval, int __user *optlen);
593asmlinkage long compat_sys_kexec_load(unsigned long entry,
594				      unsigned long nr_segments,
595				      struct compat_kexec_segment __user *,
596				      unsigned long flags);
597asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
598			const struct compat_mq_attr __user *u_mqstat,
599			struct compat_mq_attr __user *u_omqstat);
600asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
601			const struct compat_sigevent __user *u_notification);
602asmlinkage long compat_sys_mq_open(const char __user *u_name,
603			int oflag, compat_mode_t mode,
604			struct compat_mq_attr __user *u_attr);
605asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
606			const char __user *u_msg_ptr,
607			size_t msg_len, unsigned int msg_prio,
608			const struct compat_timespec __user *u_abs_timeout);
609asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
610			char __user *u_msg_ptr,
611			size_t msg_len, unsigned int __user *u_msg_prio,
612			const struct compat_timespec __user *u_abs_timeout);
613asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
614asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
615
616extern ssize_t compat_rw_copy_check_uvector(int type,
617		const struct compat_iovec __user *uvector,
618		unsigned long nr_segs,
619		unsigned long fast_segs, struct iovec *fast_pointer,
620		struct iovec **ret_pointer);
621
622extern void __user *compat_alloc_user_space(unsigned long len);
623
624asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
625		const struct compat_iovec __user *lvec,
626		unsigned long liovcnt, const struct compat_iovec __user *rvec,
627		unsigned long riovcnt, unsigned long flags);
628asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
629		const struct compat_iovec __user *lvec,
630		unsigned long liovcnt, const struct compat_iovec __user *rvec,
631		unsigned long riovcnt, unsigned long flags);
632
633asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
634				    compat_off_t __user *offset, compat_size_t count);
635
636#else
637
638#define is_compat_task() (0)
639
640#endif /* CONFIG_COMPAT */
641#endif /* _LINUX_COMPAT_H */
642