1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_COMPAT_H
3 #define _LINUX_COMPAT_H
5 * These are the type definitions for the architecture specific
6 * syscall compatibility layer.
9 #include <linux/types.h>
13 #include <linux/stat.h>
14 #include <linux/param.h> /* for HZ */
15 #include <linux/sem.h>
16 #include <linux/socket.h>
19 #include <linux/aio_abi.h> /* for aio_context_t */
20 #include <linux/unistd.h>
22 #include <asm/compat.h>
23 #include <asm/siginfo.h>
24 #include <asm/signal.h>
26 #ifndef COMPAT_USE_64BIT_TIME
27 #define COMPAT_USE_64BIT_TIME 0
31 #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v))
34 #define COMPAT_SYSCALL_DEFINE0(name) \
35 asmlinkage long compat_sys_##name(void)
37 #define COMPAT_SYSCALL_DEFINE1(name, ...) \
38 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
39 #define COMPAT_SYSCALL_DEFINE2(name, ...) \
40 COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
41 #define COMPAT_SYSCALL_DEFINE3(name, ...) \
42 COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
43 #define COMPAT_SYSCALL_DEFINE4(name, ...) \
44 COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
45 #define COMPAT_SYSCALL_DEFINE5(name, ...) \
46 COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
47 #define COMPAT_SYSCALL_DEFINE6(name, ...) \
48 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
50 #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
51 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
52 __attribute__((alias(__stringify(compat_SyS##name)))); \
53 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
54 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
55 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
57 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
59 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
61 #ifndef compat_user_stack_pointer
62 #define compat_user_stack_pointer() current_user_stack_pointer()
64 #ifndef compat_sigaltstack /* we'll need that for MIPS */
65 typedef struct compat_sigaltstack
{
68 compat_size_t ss_size
;
71 #ifndef COMPAT_MINSIGSTKSZ
72 #define COMPAT_MINSIGSTKSZ MINSIGSTKSZ
75 #define compat_jiffies_to_clock_t(x) \
76 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
78 typedef __compat_uid32_t compat_uid_t
;
79 typedef __compat_gid32_t compat_gid_t
;
81 typedef compat_ulong_t compat_aio_context_t
;
83 struct compat_sel_arg_struct
;
86 struct compat_itimerspec
{
87 struct compat_timespec it_interval
;
88 struct compat_timespec it_value
;
91 struct compat_utimbuf
{
93 compat_time_t modtime
;
96 struct compat_itimerval
{
97 struct compat_timeval it_interval
;
98 struct compat_timeval it_value
;
102 int get_compat_itimerval(struct itimerval
*, const struct compat_itimerval __user
*);
103 int put_compat_itimerval(struct compat_itimerval __user
*, const struct itimerval
*);
106 compat_clock_t tms_utime
;
107 compat_clock_t tms_stime
;
108 compat_clock_t tms_cutime
;
109 compat_clock_t tms_cstime
;
112 struct compat_timex
{
114 compat_long_t offset
;
116 compat_long_t maxerror
;
117 compat_long_t esterror
;
119 compat_long_t constant
;
120 compat_long_t precision
;
121 compat_long_t tolerance
;
122 struct compat_timeval time
;
124 compat_long_t ppsfreq
;
125 compat_long_t jitter
;
127 compat_long_t stabil
;
128 compat_long_t jitcnt
;
129 compat_long_t calcnt
;
130 compat_long_t errcnt
;
131 compat_long_t stbcnt
;
134 compat_int_t
:32; compat_int_t
:32; compat_int_t
:32; compat_int_t
:32;
135 compat_int_t
:32; compat_int_t
:32; compat_int_t
:32; compat_int_t
:32;
136 compat_int_t
:32; compat_int_t
:32; compat_int_t
:32;
140 int compat_get_timex(struct timex
*, const struct compat_timex __user
*);
141 int compat_put_timex(struct compat_timex __user
*, const struct timex
*);
143 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
146 compat_sigset_word sig
[_COMPAT_NSIG_WORDS
];
149 struct compat_sigaction
{
150 #ifndef __ARCH_HAS_IRIX_SIGACTION
151 compat_uptr_t sa_handler
;
152 compat_ulong_t sa_flags
;
154 compat_uint_t sa_flags
;
155 compat_uptr_t sa_handler
;
157 #ifdef __ARCH_HAS_SA_RESTORER
158 compat_uptr_t sa_restorer
;
160 compat_sigset_t sa_mask __packed
;
164 * These functions operate on 32- or 64-bit specs depending on
165 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
167 extern int compat_get_timespec(struct timespec
*, const void __user
*);
168 extern int compat_put_timespec(const struct timespec
*, void __user
*);
169 extern int compat_get_timeval(struct timeval
*, const void __user
*);
170 extern int compat_put_timeval(const struct timeval
*, void __user
*);
171 extern int compat_get_timespec64(struct timespec64
*, const void __user
*);
172 extern int compat_put_timespec64(const struct timespec64
*, void __user
*);
173 extern int get_compat_itimerspec64(struct itimerspec64
*its
,
174 const struct compat_itimerspec __user
*uits
);
175 extern int put_compat_itimerspec64(const struct itimerspec64
*its
,
176 struct compat_itimerspec __user
*uits
);
178 struct compat_iovec
{
179 compat_uptr_t iov_base
;
180 compat_size_t iov_len
;
183 struct compat_rlimit
{
184 compat_ulong_t rlim_cur
;
185 compat_ulong_t rlim_max
;
188 struct compat_rusage
{
189 struct compat_timeval ru_utime
;
190 struct compat_timeval ru_stime
;
191 compat_long_t ru_maxrss
;
192 compat_long_t ru_ixrss
;
193 compat_long_t ru_idrss
;
194 compat_long_t ru_isrss
;
195 compat_long_t ru_minflt
;
196 compat_long_t ru_majflt
;
197 compat_long_t ru_nswap
;
198 compat_long_t ru_inblock
;
199 compat_long_t ru_oublock
;
200 compat_long_t ru_msgsnd
;
201 compat_long_t ru_msgrcv
;
202 compat_long_t ru_nsignals
;
203 compat_long_t ru_nvcsw
;
204 compat_long_t ru_nivcsw
;
207 extern int put_compat_rusage(const struct rusage
*,
208 struct compat_rusage __user
*);
210 struct compat_siginfo
;
212 extern asmlinkage
long compat_sys_waitid(int, compat_pid_t
,
213 struct compat_siginfo __user
*, int,
214 struct compat_rusage __user
*);
216 struct compat_dirent
{
223 struct compat_ustat
{
224 compat_daddr_t f_tfree
;
225 compat_ino_t f_tinode
;
230 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
232 typedef struct compat_sigevent
{
233 compat_sigval_t sigev_value
;
234 compat_int_t sigev_signo
;
235 compat_int_t sigev_notify
;
237 compat_int_t _pad
[COMPAT_SIGEV_PAD_SIZE
];
241 compat_uptr_t _function
;
242 compat_uptr_t _attribute
;
247 struct compat_ifmap
{
248 compat_ulong_t mem_start
;
249 compat_ulong_t mem_end
;
250 unsigned short base_addr
;
256 struct compat_if_settings
{
257 unsigned int type
; /* Type of physical device or protocol */
258 unsigned int size
; /* Size of the data allocated by the caller */
259 compat_uptr_t ifs_ifsu
; /* union of pointers */
262 struct compat_ifreq
{
264 char ifrn_name
[IFNAMSIZ
]; /* if name, e.g. "en0" */
267 struct sockaddr ifru_addr
;
268 struct sockaddr ifru_dstaddr
;
269 struct sockaddr ifru_broadaddr
;
270 struct sockaddr ifru_netmask
;
271 struct sockaddr ifru_hwaddr
;
273 compat_int_t ifru_ivalue
;
274 compat_int_t ifru_mtu
;
275 struct compat_ifmap ifru_map
;
276 char ifru_slave
[IFNAMSIZ
]; /* Just fits the size */
277 char ifru_newname
[IFNAMSIZ
];
278 compat_caddr_t ifru_data
;
279 struct compat_if_settings ifru_settings
;
283 struct compat_ifconf
{
284 compat_int_t ifc_len
; /* size of buffer */
285 compat_caddr_t ifcbuf
;
288 struct compat_robust_list
{
292 struct compat_robust_list_head
{
293 struct compat_robust_list list
;
294 compat_long_t futex_offset
;
295 compat_uptr_t list_op_pending
;
298 #ifdef CONFIG_COMPAT_OLD_SIGACTION
299 struct compat_old_sigaction
{
300 compat_uptr_t sa_handler
;
301 compat_old_sigset_t sa_mask
;
302 compat_ulong_t sa_flags
;
303 compat_uptr_t sa_restorer
;
307 struct compat_keyctl_kdf_params
{
308 compat_uptr_t hashname
;
309 compat_uptr_t otherinfo
;
314 struct compat_statfs
;
315 struct compat_statfs64
;
316 struct compat_old_linux_dirent
;
317 struct compat_linux_dirent
;
318 struct linux_dirent64
;
319 struct compat_msghdr
;
320 struct compat_mmsghdr
;
321 struct compat_sysinfo
;
322 struct compat_sysctl_args
;
323 struct compat_kexec_segment
;
324 struct compat_mq_attr
;
325 struct compat_msgbuf
;
328 compat_sys_set_robust_list(struct compat_robust_list_head __user
*head
,
331 compat_sys_get_robust_list(int pid
, compat_uptr_t __user
*head_ptr
,
332 compat_size_t __user
*len_ptr
);
334 asmlinkage
long compat_sys_ipc(u32
, int, int, u32
, compat_uptr_t
, u32
);
335 asmlinkage
long compat_sys_shmat(int shmid
, compat_uptr_t shmaddr
, int shmflg
);
336 asmlinkage
long compat_sys_semctl(int semid
, int semnum
, int cmd
, int arg
);
337 asmlinkage
long compat_sys_msgsnd(int msqid
, compat_uptr_t msgp
,
338 compat_ssize_t msgsz
, int msgflg
);
339 asmlinkage
long compat_sys_msgrcv(int msqid
, compat_uptr_t msgp
,
340 compat_ssize_t msgsz
, compat_long_t msgtyp
, int msgflg
);
341 long compat_sys_msgctl(int first
, int second
, void __user
*uptr
);
342 long compat_sys_shmctl(int first
, int second
, void __user
*uptr
);
343 long compat_sys_semtimedop(int semid
, struct sembuf __user
*tsems
,
344 unsigned nsems
, const struct compat_timespec __user
*timeout
);
345 asmlinkage
long compat_sys_keyctl(u32 option
,
346 u32 arg2
, u32 arg3
, u32 arg4
, u32 arg5
);
347 asmlinkage
long compat_sys_ustat(unsigned dev
, struct compat_ustat __user
*u32
);
349 asmlinkage ssize_t
compat_sys_readv(compat_ulong_t fd
,
350 const struct compat_iovec __user
*vec
, compat_ulong_t vlen
);
351 asmlinkage ssize_t
compat_sys_writev(compat_ulong_t fd
,
352 const struct compat_iovec __user
*vec
, compat_ulong_t vlen
);
353 asmlinkage ssize_t
compat_sys_preadv(compat_ulong_t fd
,
354 const struct compat_iovec __user
*vec
,
355 compat_ulong_t vlen
, u32 pos_low
, u32 pos_high
);
356 asmlinkage ssize_t
compat_sys_pwritev(compat_ulong_t fd
,
357 const struct compat_iovec __user
*vec
,
358 compat_ulong_t vlen
, u32 pos_low
, u32 pos_high
);
359 asmlinkage ssize_t
compat_sys_preadv2(compat_ulong_t fd
,
360 const struct compat_iovec __user
*vec
,
361 compat_ulong_t vlen
, u32 pos_low
, u32 pos_high
, rwf_t flags
);
362 asmlinkage ssize_t
compat_sys_pwritev2(compat_ulong_t fd
,
363 const struct compat_iovec __user
*vec
,
364 compat_ulong_t vlen
, u32 pos_low
, u32 pos_high
, rwf_t flags
);
366 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
367 asmlinkage
long compat_sys_preadv64(unsigned long fd
,
368 const struct compat_iovec __user
*vec
,
369 unsigned long vlen
, loff_t pos
);
372 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
373 asmlinkage
long compat_sys_pwritev64(unsigned long fd
,
374 const struct compat_iovec __user
*vec
,
375 unsigned long vlen
, loff_t pos
);
378 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
379 asmlinkage
long compat_sys_readv64v2(unsigned long fd
,
380 const struct compat_iovec __user
*vec
,
381 unsigned long vlen
, loff_t pos
, rwf_t flags
);
384 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
385 asmlinkage
long compat_sys_pwritev64v2(unsigned long fd
,
386 const struct compat_iovec __user
*vec
,
387 unsigned long vlen
, loff_t pos
, rwf_t flags
);
390 asmlinkage
long compat_sys_lseek(unsigned int, compat_off_t
, unsigned int);
392 asmlinkage
long compat_sys_execve(const char __user
*filename
, const compat_uptr_t __user
*argv
,
393 const compat_uptr_t __user
*envp
);
394 asmlinkage
long compat_sys_execveat(int dfd
, const char __user
*filename
,
395 const compat_uptr_t __user
*argv
,
396 const compat_uptr_t __user
*envp
, int flags
);
398 asmlinkage
long compat_sys_select(int n
, compat_ulong_t __user
*inp
,
399 compat_ulong_t __user
*outp
, compat_ulong_t __user
*exp
,
400 struct compat_timeval __user
*tvp
);
402 asmlinkage
long compat_sys_old_select(struct compat_sel_arg_struct __user
*arg
);
404 asmlinkage
long compat_sys_wait4(compat_pid_t pid
,
405 compat_uint_t __user
*stat_addr
, int options
,
406 struct compat_rusage __user
*ru
);
408 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
410 #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG)
412 long compat_get_bitmap(unsigned long *mask
, const compat_ulong_t __user
*umask
,
413 unsigned long bitmap_size
);
414 long compat_put_bitmap(compat_ulong_t __user
*umask
, unsigned long *mask
,
415 unsigned long bitmap_size
);
416 int copy_siginfo_from_user32(siginfo_t
*to
, struct compat_siginfo __user
*from
);
417 int copy_siginfo_to_user32(struct compat_siginfo __user
*to
, const siginfo_t
*from
);
418 int get_compat_sigevent(struct sigevent
*event
,
419 const struct compat_sigevent __user
*u_event
);
420 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid
, compat_pid_t pid
, int sig
,
421 struct compat_siginfo __user
*uinfo
);
422 #ifdef CONFIG_COMPAT_OLD_SIGACTION
423 asmlinkage
long compat_sys_sigaction(int sig
,
424 const struct compat_old_sigaction __user
*act
,
425 struct compat_old_sigaction __user
*oact
);
428 static inline int compat_timeval_compare(struct compat_timeval
*lhs
,
429 struct compat_timeval
*rhs
)
431 if (lhs
->tv_sec
< rhs
->tv_sec
)
433 if (lhs
->tv_sec
> rhs
->tv_sec
)
435 return lhs
->tv_usec
- rhs
->tv_usec
;
438 static inline int compat_timespec_compare(struct compat_timespec
*lhs
,
439 struct compat_timespec
*rhs
)
441 if (lhs
->tv_sec
< rhs
->tv_sec
)
443 if (lhs
->tv_sec
> rhs
->tv_sec
)
445 return lhs
->tv_nsec
- rhs
->tv_nsec
;
448 asmlinkage
long compat_sys_gettimeofday(struct compat_timeval __user
*tv
,
449 struct timezone __user
*tz
);
450 asmlinkage
long compat_sys_settimeofday(struct compat_timeval __user
*tv
,
451 struct timezone __user
*tz
);
453 asmlinkage
long compat_sys_adjtimex(struct compat_timex __user
*utp
);
455 extern int get_compat_sigset(sigset_t
*set
, const compat_sigset_t __user
*compat
);
456 extern int put_compat_sigset(compat_sigset_t __user
*compat
,
457 const sigset_t
*set
, unsigned int size
);
459 asmlinkage
long compat_sys_migrate_pages(compat_pid_t pid
,
460 compat_ulong_t maxnode
, const compat_ulong_t __user
*old_nodes
,
461 const compat_ulong_t __user
*new_nodes
);
463 extern int compat_ptrace_request(struct task_struct
*child
,
464 compat_long_t request
,
465 compat_ulong_t addr
, compat_ulong_t data
);
467 extern long compat_arch_ptrace(struct task_struct
*child
, compat_long_t request
,
468 compat_ulong_t addr
, compat_ulong_t data
);
469 asmlinkage
long compat_sys_ptrace(compat_long_t request
, compat_long_t pid
,
470 compat_long_t addr
, compat_long_t data
);
472 asmlinkage
long compat_sys_lookup_dcookie(u32
, u32
, char __user
*, compat_size_t
);
474 * epoll (fs/eventpoll.c) compat bits follow ...
476 struct epoll_event
; /* fortunately, this one is fixed-layout */
477 asmlinkage
long compat_sys_epoll_pwait(int epfd
,
478 struct epoll_event __user
*events
,
479 int maxevents
, int timeout
,
480 const compat_sigset_t __user
*sigmask
,
481 compat_size_t sigsetsize
);
483 asmlinkage
long compat_sys_utime(const char __user
*filename
,
484 struct compat_utimbuf __user
*t
);
485 asmlinkage
long compat_sys_utimensat(unsigned int dfd
,
486 const char __user
*filename
,
487 struct compat_timespec __user
*t
,
490 asmlinkage
long compat_sys_time(compat_time_t __user
*tloc
);
491 asmlinkage
long compat_sys_stime(compat_time_t __user
*tptr
);
492 asmlinkage
long compat_sys_signalfd(int ufd
,
493 const compat_sigset_t __user
*sigmask
,
494 compat_size_t sigsetsize
);
495 asmlinkage
long compat_sys_timerfd_settime(int ufd
, int flags
,
496 const struct compat_itimerspec __user
*utmr
,
497 struct compat_itimerspec __user
*otmr
);
498 asmlinkage
long compat_sys_timerfd_gettime(int ufd
,
499 struct compat_itimerspec __user
*otmr
);
501 asmlinkage
long compat_sys_move_pages(pid_t pid
, compat_ulong_t nr_pages
,
503 const int __user
*nodes
,
506 asmlinkage
long compat_sys_futimesat(unsigned int dfd
,
507 const char __user
*filename
,
508 struct compat_timeval __user
*t
);
509 asmlinkage
long compat_sys_utimes(const char __user
*filename
,
510 struct compat_timeval __user
*t
);
511 asmlinkage
long compat_sys_newstat(const char __user
*filename
,
512 struct compat_stat __user
*statbuf
);
513 asmlinkage
long compat_sys_newlstat(const char __user
*filename
,
514 struct compat_stat __user
*statbuf
);
515 asmlinkage
long compat_sys_newfstatat(unsigned int dfd
,
516 const char __user
*filename
,
517 struct compat_stat __user
*statbuf
,
519 asmlinkage
long compat_sys_newfstat(unsigned int fd
,
520 struct compat_stat __user
*statbuf
);
521 asmlinkage
long compat_sys_statfs(const char __user
*pathname
,
522 struct compat_statfs __user
*buf
);
523 asmlinkage
long compat_sys_fstatfs(unsigned int fd
,
524 struct compat_statfs __user
*buf
);
525 asmlinkage
long compat_sys_statfs64(const char __user
*pathname
,
527 struct compat_statfs64 __user
*buf
);
528 asmlinkage
long compat_sys_fstatfs64(unsigned int fd
, compat_size_t sz
,
529 struct compat_statfs64 __user
*buf
);
530 asmlinkage
long compat_sys_fcntl64(unsigned int fd
, unsigned int cmd
,
532 asmlinkage
long compat_sys_fcntl(unsigned int fd
, unsigned int cmd
,
534 asmlinkage
long compat_sys_io_setup(unsigned nr_reqs
, u32 __user
*ctx32p
);
535 asmlinkage
long compat_sys_io_getevents(compat_aio_context_t ctx_id
,
536 compat_long_t min_nr
,
538 struct io_event __user
*events
,
539 struct compat_timespec __user
*timeout
);
540 asmlinkage
long compat_sys_io_submit(compat_aio_context_t ctx_id
, int nr
,
542 asmlinkage
long compat_sys_mount(const char __user
*dev_name
,
543 const char __user
*dir_name
,
544 const char __user
*type
, compat_ulong_t flags
,
545 const void __user
*data
);
546 asmlinkage
long compat_sys_old_readdir(unsigned int fd
,
547 struct compat_old_linux_dirent __user
*,
549 asmlinkage
long compat_sys_getdents(unsigned int fd
,
550 struct compat_linux_dirent __user
*dirent
,
552 asmlinkage
long compat_sys_vmsplice(int fd
, const struct compat_iovec __user
*,
553 unsigned int nr_segs
, unsigned int flags
);
554 asmlinkage
long compat_sys_open(const char __user
*filename
, int flags
,
556 asmlinkage
long compat_sys_openat(int dfd
, const char __user
*filename
,
557 int flags
, umode_t mode
);
558 asmlinkage
long compat_sys_open_by_handle_at(int mountdirfd
,
559 struct file_handle __user
*handle
,
561 asmlinkage
long compat_sys_truncate(const char __user
*, compat_off_t
);
562 asmlinkage
long compat_sys_ftruncate(unsigned int, compat_ulong_t
);
563 asmlinkage
long compat_sys_pselect6(int n
, compat_ulong_t __user
*inp
,
564 compat_ulong_t __user
*outp
,
565 compat_ulong_t __user
*exp
,
566 struct compat_timespec __user
*tsp
,
568 asmlinkage
long compat_sys_ppoll(struct pollfd __user
*ufds
,
570 struct compat_timespec __user
*tsp
,
571 const compat_sigset_t __user
*sigmask
,
572 compat_size_t sigsetsize
);
573 asmlinkage
long compat_sys_signalfd4(int ufd
,
574 const compat_sigset_t __user
*sigmask
,
575 compat_size_t sigsetsize
, int flags
);
576 asmlinkage
long compat_sys_get_mempolicy(int __user
*policy
,
577 compat_ulong_t __user
*nmask
,
578 compat_ulong_t maxnode
,
580 compat_ulong_t flags
);
581 asmlinkage
long compat_sys_set_mempolicy(int mode
, compat_ulong_t __user
*nmask
,
582 compat_ulong_t maxnode
);
583 asmlinkage
long compat_sys_mbind(compat_ulong_t start
, compat_ulong_t len
,
585 compat_ulong_t __user
*nmask
,
586 compat_ulong_t maxnode
, compat_ulong_t flags
);
588 asmlinkage
long compat_sys_setsockopt(int fd
, int level
, int optname
,
589 char __user
*optval
, unsigned int optlen
);
590 asmlinkage
long compat_sys_sendmsg(int fd
, struct compat_msghdr __user
*msg
,
592 asmlinkage
long compat_sys_sendmmsg(int fd
, struct compat_mmsghdr __user
*mmsg
,
593 unsigned vlen
, unsigned int flags
);
594 asmlinkage
long compat_sys_recvmsg(int fd
, struct compat_msghdr __user
*msg
,
596 asmlinkage
long compat_sys_recv(int fd
, void __user
*buf
, compat_size_t len
,
598 asmlinkage
long compat_sys_recvfrom(int fd
, void __user
*buf
, compat_size_t len
,
599 unsigned flags
, struct sockaddr __user
*addr
,
600 int __user
*addrlen
);
601 asmlinkage
long compat_sys_recvmmsg(int fd
, struct compat_mmsghdr __user
*mmsg
,
602 unsigned vlen
, unsigned int flags
,
603 struct compat_timespec __user
*timeout
);
604 asmlinkage
long compat_sys_nanosleep(struct compat_timespec __user
*rqtp
,
605 struct compat_timespec __user
*rmtp
);
606 asmlinkage
long compat_sys_getitimer(int which
,
607 struct compat_itimerval __user
*it
);
608 asmlinkage
long compat_sys_setitimer(int which
,
609 struct compat_itimerval __user
*in
,
610 struct compat_itimerval __user
*out
);
611 asmlinkage
long compat_sys_times(struct compat_tms __user
*tbuf
);
612 asmlinkage
long compat_sys_setrlimit(unsigned int resource
,
613 struct compat_rlimit __user
*rlim
);
614 asmlinkage
long compat_sys_getrlimit(unsigned int resource
,
615 struct compat_rlimit __user
*rlim
);
616 asmlinkage
long compat_sys_getrusage(int who
, struct compat_rusage __user
*ru
);
617 asmlinkage
long compat_sys_sched_setaffinity(compat_pid_t pid
,
619 compat_ulong_t __user
*user_mask_ptr
);
620 asmlinkage
long compat_sys_sched_getaffinity(compat_pid_t pid
,
622 compat_ulong_t __user
*user_mask_ptr
);
623 asmlinkage
long compat_sys_timer_create(clockid_t which_clock
,
624 struct compat_sigevent __user
*timer_event_spec
,
625 timer_t __user
*created_timer_id
);
626 asmlinkage
long compat_sys_timer_settime(timer_t timer_id
, int flags
,
627 struct compat_itimerspec __user
*new,
628 struct compat_itimerspec __user
*old
);
629 asmlinkage
long compat_sys_timer_gettime(timer_t timer_id
,
630 struct compat_itimerspec __user
*setting
);
631 asmlinkage
long compat_sys_clock_settime(clockid_t which_clock
,
632 struct compat_timespec __user
*tp
);
633 asmlinkage
long compat_sys_clock_gettime(clockid_t which_clock
,
634 struct compat_timespec __user
*tp
);
635 asmlinkage
long compat_sys_clock_adjtime(clockid_t which_clock
,
636 struct compat_timex __user
*tp
);
637 asmlinkage
long compat_sys_clock_getres(clockid_t which_clock
,
638 struct compat_timespec __user
*tp
);
639 asmlinkage
long compat_sys_clock_nanosleep(clockid_t which_clock
, int flags
,
640 struct compat_timespec __user
*rqtp
,
641 struct compat_timespec __user
*rmtp
);
642 asmlinkage
long compat_sys_rt_sigtimedwait(compat_sigset_t __user
*uthese
,
643 struct compat_siginfo __user
*uinfo
,
644 struct compat_timespec __user
*uts
, compat_size_t sigsetsize
);
645 asmlinkage
long compat_sys_rt_sigsuspend(compat_sigset_t __user
*unewset
,
646 compat_size_t sigsetsize
);
647 asmlinkage
long compat_sys_rt_sigprocmask(int how
, compat_sigset_t __user
*set
,
648 compat_sigset_t __user
*oset
,
649 compat_size_t sigsetsize
);
650 asmlinkage
long compat_sys_rt_sigpending(compat_sigset_t __user
*uset
,
651 compat_size_t sigsetsize
);
652 #ifndef CONFIG_ODD_RT_SIGACTION
653 asmlinkage
long compat_sys_rt_sigaction(int,
654 const struct compat_sigaction __user
*,
655 struct compat_sigaction __user
*,
658 asmlinkage
long compat_sys_rt_sigqueueinfo(compat_pid_t pid
, int sig
,
659 struct compat_siginfo __user
*uinfo
);
660 asmlinkage
long compat_sys_sysinfo(struct compat_sysinfo __user
*info
);
661 asmlinkage
long compat_sys_ioctl(unsigned int fd
, unsigned int cmd
,
663 asmlinkage
long compat_sys_futex(u32 __user
*uaddr
, int op
, u32 val
,
664 struct compat_timespec __user
*utime
, u32 __user
*uaddr2
,
666 asmlinkage
long compat_sys_getsockopt(int fd
, int level
, int optname
,
667 char __user
*optval
, int __user
*optlen
);
668 asmlinkage
long compat_sys_kexec_load(compat_ulong_t entry
,
669 compat_ulong_t nr_segments
,
670 struct compat_kexec_segment __user
*,
671 compat_ulong_t flags
);
672 asmlinkage
long compat_sys_mq_getsetattr(mqd_t mqdes
,
673 const struct compat_mq_attr __user
*u_mqstat
,
674 struct compat_mq_attr __user
*u_omqstat
);
675 asmlinkage
long compat_sys_mq_notify(mqd_t mqdes
,
676 const struct compat_sigevent __user
*u_notification
);
677 asmlinkage
long compat_sys_mq_open(const char __user
*u_name
,
678 int oflag
, compat_mode_t mode
,
679 struct compat_mq_attr __user
*u_attr
);
680 asmlinkage
long compat_sys_mq_timedsend(mqd_t mqdes
,
681 const char __user
*u_msg_ptr
,
682 compat_size_t msg_len
, unsigned int msg_prio
,
683 const struct compat_timespec __user
*u_abs_timeout
);
684 asmlinkage ssize_t
compat_sys_mq_timedreceive(mqd_t mqdes
,
685 char __user
*u_msg_ptr
,
686 compat_size_t msg_len
, unsigned int __user
*u_msg_prio
,
687 const struct compat_timespec __user
*u_abs_timeout
);
688 asmlinkage
long compat_sys_socketcall(int call
, u32 __user
*args
);
689 asmlinkage
long compat_sys_sysctl(struct compat_sysctl_args __user
*args
);
691 extern ssize_t
compat_rw_copy_check_uvector(int type
,
692 const struct compat_iovec __user
*uvector
,
693 unsigned long nr_segs
,
694 unsigned long fast_segs
, struct iovec
*fast_pointer
,
695 struct iovec
**ret_pointer
);
697 extern void __user
*compat_alloc_user_space(unsigned long len
);
699 asmlinkage ssize_t
compat_sys_process_vm_readv(compat_pid_t pid
,
700 const struct compat_iovec __user
*lvec
,
701 compat_ulong_t liovcnt
, const struct compat_iovec __user
*rvec
,
702 compat_ulong_t riovcnt
, compat_ulong_t flags
);
703 asmlinkage ssize_t
compat_sys_process_vm_writev(compat_pid_t pid
,
704 const struct compat_iovec __user
*lvec
,
705 compat_ulong_t liovcnt
, const struct compat_iovec __user
*rvec
,
706 compat_ulong_t riovcnt
, compat_ulong_t flags
);
708 asmlinkage
long compat_sys_sendfile(int out_fd
, int in_fd
,
709 compat_off_t __user
*offset
, compat_size_t count
);
710 asmlinkage
long compat_sys_sendfile64(int out_fd
, int in_fd
,
711 compat_loff_t __user
*offset
, compat_size_t count
);
712 asmlinkage
long compat_sys_sigaltstack(const compat_stack_t __user
*uss_ptr
,
713 compat_stack_t __user
*uoss_ptr
);
715 #ifdef __ARCH_WANT_SYS_SIGPENDING
716 asmlinkage
long compat_sys_sigpending(compat_old_sigset_t __user
*set
);
719 #ifdef __ARCH_WANT_SYS_SIGPROCMASK
720 asmlinkage
long compat_sys_sigprocmask(int how
, compat_old_sigset_t __user
*nset
,
721 compat_old_sigset_t __user
*oset
);
724 int compat_restore_altstack(const compat_stack_t __user
*uss
);
725 int __compat_save_altstack(compat_stack_t __user
*, unsigned long);
726 #define compat_save_altstack_ex(uss, sp) do { \
727 compat_stack_t __user *__uss = uss; \
728 struct task_struct *t = current; \
729 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
730 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
731 put_user_ex(t->sas_ss_size, &__uss->ss_size); \
732 if (t->sas_ss_flags & SS_AUTODISARM) \
736 asmlinkage
long compat_sys_sched_rr_get_interval(compat_pid_t pid
,
737 struct compat_timespec __user
*interval
);
739 asmlinkage
long compat_sys_fanotify_mark(int, unsigned int, __u32
, __u32
,
740 int, const char __user
*);
742 asmlinkage
long compat_sys_arch_prctl(int option
, unsigned long arg2
);
745 * For most but not all architectures, "am I in a compat syscall?" and
746 * "am I a compat task?" are the same question. For architectures on which
747 * they aren't the same question, arch code can override in_compat_syscall.
750 #ifndef in_compat_syscall
751 static inline bool in_compat_syscall(void) { return is_compat_task(); }
755 * ns_to_compat_timeval - Compat version of ns_to_timeval
756 * @nsec: the nanoseconds value to be converted
758 * Returns the compat_timeval representation of the nsec parameter.
760 static inline struct compat_timeval
ns_to_compat_timeval(s64 nsec
)
763 struct compat_timeval ctv
;
765 tv
= ns_to_timeval(nsec
);
766 ctv
.tv_sec
= tv
.tv_sec
;
767 ctv
.tv_usec
= tv
.tv_usec
;
772 #else /* !CONFIG_COMPAT */
774 #define is_compat_task() (0)
775 static inline bool in_compat_syscall(void) { return false; }
777 #endif /* CONFIG_COMPAT */
779 #endif /* _LINUX_COMPAT_H */