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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _LINUX_COMPAT_H |
3 | #define _LINUX_COMPAT_H | |
4 | /* | |
5 | * These are the type definitions for the architecture specific | |
6 | * syscall compatibility layer. | |
7 | */ | |
1da177e4 | 8 | |
5180e3e2 AL |
9 | #include <linux/types.h> |
10 | ||
1da177e4 LT |
11 | #ifdef CONFIG_COMPAT |
12 | ||
13 | #include <linux/stat.h> | |
14 | #include <linux/param.h> /* for HZ */ | |
15 | #include <linux/sem.h> | |
2dceba14 AB |
16 | #include <linux/socket.h> |
17 | #include <linux/if.h> | |
be84cb43 | 18 | #include <linux/fs.h> |
45e9683e | 19 | #include <linux/aio_abi.h> /* for aio_context_t */ |
fde9fc76 | 20 | #include <linux/uaccess.h> |
f5b972e9 | 21 | #include <linux/unistd.h> |
1da177e4 LT |
22 | |
23 | #include <asm/compat.h> | |
24 | #include <asm/siginfo.h> | |
3f2e05e9 | 25 | #include <asm/signal.h> |
1da177e4 | 26 | |
7303e30e DB |
27 | #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
28 | /* | |
29 | * It may be useful for an architecture to override the definitions of the | |
30 | * COMPAT_SYSCALL_DEFINE0 and COMPAT_SYSCALL_DEFINEx() macros, in particular | |
31 | * to use a different calling convention for syscalls. To allow for that, | |
32 | + the prototypes for the compat_sys_*() functions below will *not* be included | |
33 | * if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
34 | */ | |
35 | #include <asm/syscall_wrapper.h> | |
36 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ | |
37 | ||
45e87781 L |
38 | #ifndef COMPAT_USE_64BIT_TIME |
39 | #define COMPAT_USE_64BIT_TIME 0 | |
40 | #endif | |
41 | ||
46836613 | 42 | #ifndef __SC_DELOUSE |
4f59c718 | 43 | #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v)) |
46836613 AV |
44 | #endif |
45 | ||
7303e30e | 46 | #ifndef COMPAT_SYSCALL_DEFINE0 |
217f4433 | 47 | #define COMPAT_SYSCALL_DEFINE0(name) \ |
c9a21195 HM |
48 | asmlinkage long compat_sys_##name(void); \ |
49 | ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \ | |
217f4433 | 50 | asmlinkage long compat_sys_##name(void) |
7303e30e | 51 | #endif /* COMPAT_SYSCALL_DEFINE0 */ |
217f4433 | 52 | |
46836613 AV |
53 | #define COMPAT_SYSCALL_DEFINE1(name, ...) \ |
54 | COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) | |
55 | #define COMPAT_SYSCALL_DEFINE2(name, ...) \ | |
56 | COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) | |
57 | #define COMPAT_SYSCALL_DEFINE3(name, ...) \ | |
58 | COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) | |
59 | #define COMPAT_SYSCALL_DEFINE4(name, ...) \ | |
60 | COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) | |
61 | #define COMPAT_SYSCALL_DEFINE5(name, ...) \ | |
62 | COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) | |
63 | #define COMPAT_SYSCALL_DEFINE6(name, ...) \ | |
64 | COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) | |
65 | ||
5ac9efa3 DB |
66 | /* |
67 | * The asmlinkage stub is aliased to a function named __se_compat_sys_*() which | |
68 | * sign-extends 32-bit ints to longs whenever needed. The actual work is | |
69 | * done within __do_compat_sys_*(). | |
70 | */ | |
7303e30e | 71 | #ifndef COMPAT_SYSCALL_DEFINEx |
5ac9efa3 DB |
72 | #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ |
73 | asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ | |
74 | asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ | |
75 | __attribute__((alias(__stringify(__se_compat_sys##name)))); \ | |
76 | ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ | |
77 | static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ | |
78 | asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ | |
79 | asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ | |
80 | { \ | |
81 | return __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ | |
82 | } \ | |
83 | static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) | |
7303e30e | 84 | #endif /* COMPAT_SYSCALL_DEFINEx */ |
46836613 | 85 | |
9b064fc3 AV |
86 | #ifndef compat_user_stack_pointer |
87 | #define compat_user_stack_pointer() current_user_stack_pointer() | |
88 | #endif | |
90268439 AV |
89 | #ifndef compat_sigaltstack /* we'll need that for MIPS */ |
90 | typedef struct compat_sigaltstack { | |
91 | compat_uptr_t ss_sp; | |
92 | int ss_flags; | |
93 | compat_size_t ss_size; | |
94 | } compat_stack_t; | |
95 | #endif | |
90268439 | 96 | |
1da177e4 LT |
97 | #define compat_jiffies_to_clock_t(x) \ |
98 | (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) | |
99 | ||
202e5979 SR |
100 | typedef __compat_uid32_t compat_uid_t; |
101 | typedef __compat_gid32_t compat_gid_t; | |
102 | ||
932602e2 HC |
103 | typedef compat_ulong_t compat_aio_context_t; |
104 | ||
5d0e5283 | 105 | struct compat_sel_arg_struct; |
1da177e4 LT |
106 | struct rusage; |
107 | ||
4800a5bb | 108 | struct compat_itimerspec { |
1da177e4 LT |
109 | struct compat_timespec it_interval; |
110 | struct compat_timespec it_value; | |
111 | }; | |
112 | ||
113 | struct compat_utimbuf { | |
114 | compat_time_t actime; | |
115 | compat_time_t modtime; | |
116 | }; | |
117 | ||
118 | struct compat_itimerval { | |
119 | struct compat_timeval it_interval; | |
120 | struct compat_timeval it_value; | |
121 | }; | |
122 | ||
54ad9c46 AV |
123 | struct itimerval; |
124 | int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *); | |
125 | int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *); | |
126 | ||
1da177e4 LT |
127 | struct compat_tms { |
128 | compat_clock_t tms_utime; | |
129 | compat_clock_t tms_stime; | |
130 | compat_clock_t tms_cutime; | |
131 | compat_clock_t tms_cstime; | |
132 | }; | |
133 | ||
88959ea9 SR |
134 | struct compat_timex { |
135 | compat_uint_t modes; | |
136 | compat_long_t offset; | |
137 | compat_long_t freq; | |
138 | compat_long_t maxerror; | |
139 | compat_long_t esterror; | |
140 | compat_int_t status; | |
141 | compat_long_t constant; | |
142 | compat_long_t precision; | |
143 | compat_long_t tolerance; | |
144 | struct compat_timeval time; | |
145 | compat_long_t tick; | |
146 | compat_long_t ppsfreq; | |
147 | compat_long_t jitter; | |
148 | compat_int_t shift; | |
149 | compat_long_t stabil; | |
150 | compat_long_t jitcnt; | |
151 | compat_long_t calcnt; | |
152 | compat_long_t errcnt; | |
153 | compat_long_t stbcnt; | |
153b5d05 | 154 | compat_int_t tai; |
88959ea9 | 155 | |
4800a5bb CM |
156 | compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; |
157 | compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; | |
158 | compat_int_t:32; compat_int_t:32; compat_int_t:32; | |
88959ea9 SR |
159 | }; |
160 | ||
3a4d44b6 AV |
161 | struct timex; |
162 | int compat_get_timex(struct timex *, const struct compat_timex __user *); | |
163 | int compat_put_timex(struct compat_timex __user *, const struct timex *); | |
164 | ||
1da177e4 LT |
165 | #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) |
166 | ||
167 | typedef struct { | |
168 | compat_sigset_word sig[_COMPAT_NSIG_WORDS]; | |
169 | } compat_sigset_t; | |
170 | ||
08d32fe5 | 171 | struct compat_sigaction { |
2a148698 | 172 | #ifndef __ARCH_HAS_IRIX_SIGACTION |
08d32fe5 AV |
173 | compat_uptr_t sa_handler; |
174 | compat_ulong_t sa_flags; | |
175 | #else | |
2a148698 | 176 | compat_uint_t sa_flags; |
08d32fe5 AV |
177 | compat_uptr_t sa_handler; |
178 | #endif | |
179 | #ifdef __ARCH_HAS_SA_RESTORER | |
180 | compat_uptr_t sa_restorer; | |
181 | #endif | |
182 | compat_sigset_t sa_mask __packed; | |
183 | }; | |
08d32fe5 | 184 | |
b713da69 AV |
185 | typedef union compat_sigval { |
186 | compat_int_t sival_int; | |
187 | compat_uptr_t sival_ptr; | |
188 | } compat_sigval_t; | |
189 | ||
190 | typedef struct compat_siginfo { | |
191 | int si_signo; | |
192 | #ifndef __ARCH_HAS_SWAPPED_SIGINFO | |
193 | int si_errno; | |
194 | int si_code; | |
195 | #else | |
196 | int si_code; | |
197 | int si_errno; | |
198 | #endif | |
199 | ||
200 | union { | |
201 | int _pad[128/sizeof(int) - 3]; | |
202 | ||
203 | /* kill() */ | |
204 | struct { | |
205 | compat_pid_t _pid; /* sender's pid */ | |
206 | __compat_uid32_t _uid; /* sender's uid */ | |
207 | } _kill; | |
208 | ||
209 | /* POSIX.1b timers */ | |
210 | struct { | |
211 | compat_timer_t _tid; /* timer id */ | |
212 | int _overrun; /* overrun count */ | |
213 | compat_sigval_t _sigval; /* same as below */ | |
214 | } _timer; | |
215 | ||
216 | /* POSIX.1b signals */ | |
217 | struct { | |
218 | compat_pid_t _pid; /* sender's pid */ | |
219 | __compat_uid32_t _uid; /* sender's uid */ | |
220 | compat_sigval_t _sigval; | |
221 | } _rt; | |
222 | ||
223 | /* SIGCHLD */ | |
224 | struct { | |
225 | compat_pid_t _pid; /* which child */ | |
226 | __compat_uid32_t _uid; /* sender's uid */ | |
227 | int _status; /* exit code */ | |
228 | compat_clock_t _utime; | |
229 | compat_clock_t _stime; | |
230 | } _sigchld; | |
231 | ||
232 | #ifdef CONFIG_X86_X32_ABI | |
233 | /* SIGCHLD (x32 version) */ | |
234 | struct { | |
235 | compat_pid_t _pid; /* which child */ | |
236 | __compat_uid32_t _uid; /* sender's uid */ | |
237 | int _status; /* exit code */ | |
238 | compat_s64 _utime; | |
239 | compat_s64 _stime; | |
240 | } _sigchld_x32; | |
241 | #endif | |
242 | ||
243 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ | |
244 | struct { | |
245 | compat_uptr_t _addr; /* faulting insn/memory ref. */ | |
246 | #ifdef __ARCH_SI_TRAPNO | |
247 | int _trapno; /* TRAP # which caused the signal */ | |
248 | #endif | |
8420f719 EB |
249 | #define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \ |
250 | sizeof(short) : __alignof__(compat_uptr_t)) | |
b713da69 | 251 | union { |
b68a68d3 EB |
252 | /* |
253 | * used when si_code=BUS_MCEERR_AR or | |
254 | * used when si_code=BUS_MCEERR_AO | |
255 | */ | |
256 | short int _addr_lsb; /* Valid LSB of the reported address. */ | |
b713da69 AV |
257 | /* used when si_code=SEGV_BNDERR */ |
258 | struct { | |
8420f719 | 259 | char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD]; |
b713da69 AV |
260 | compat_uptr_t _lower; |
261 | compat_uptr_t _upper; | |
262 | } _addr_bnd; | |
263 | /* used when si_code=SEGV_PKUERR */ | |
b68a68d3 | 264 | struct { |
8420f719 | 265 | char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD]; |
b68a68d3 EB |
266 | u32 _pkey; |
267 | } _addr_pkey; | |
b713da69 AV |
268 | }; |
269 | } _sigfault; | |
270 | ||
271 | /* SIGPOLL */ | |
272 | struct { | |
273 | compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
274 | int _fd; | |
275 | } _sigpoll; | |
276 | ||
277 | struct { | |
278 | compat_uptr_t _call_addr; /* calling user insn */ | |
279 | int _syscall; /* triggering system call number */ | |
280 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ | |
281 | } _sigsys; | |
282 | } _sifields; | |
283 | } compat_siginfo_t; | |
284 | ||
6684ba20 PA |
285 | /* |
286 | * These functions operate on 32- or 64-bit specs depending on | |
81993e81 | 287 | * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments. |
6684ba20 PA |
288 | */ |
289 | extern int compat_get_timespec(struct timespec *, const void __user *); | |
290 | extern int compat_put_timespec(const struct timespec *, void __user *); | |
291 | extern int compat_get_timeval(struct timeval *, const void __user *); | |
292 | extern int compat_put_timeval(const struct timeval *, void __user *); | |
f59dd9c8 DD |
293 | extern int compat_get_timespec64(struct timespec64 *, const void __user *); |
294 | extern int compat_put_timespec64(const struct timespec64 *, void __user *); | |
d5b7ffbf DD |
295 | extern int get_compat_itimerspec64(struct itimerspec64 *its, |
296 | const struct compat_itimerspec __user *uits); | |
297 | extern int put_compat_itimerspec64(const struct itimerspec64 *its, | |
298 | struct compat_itimerspec __user *uits); | |
1da177e4 LT |
299 | |
300 | struct compat_iovec { | |
301 | compat_uptr_t iov_base; | |
302 | compat_size_t iov_len; | |
303 | }; | |
304 | ||
305 | struct compat_rlimit { | |
306 | compat_ulong_t rlim_cur; | |
307 | compat_ulong_t rlim_max; | |
308 | }; | |
309 | ||
310 | struct compat_rusage { | |
311 | struct compat_timeval ru_utime; | |
312 | struct compat_timeval ru_stime; | |
313 | compat_long_t ru_maxrss; | |
314 | compat_long_t ru_ixrss; | |
315 | compat_long_t ru_idrss; | |
316 | compat_long_t ru_isrss; | |
317 | compat_long_t ru_minflt; | |
318 | compat_long_t ru_majflt; | |
319 | compat_long_t ru_nswap; | |
320 | compat_long_t ru_inblock; | |
321 | compat_long_t ru_oublock; | |
322 | compat_long_t ru_msgsnd; | |
323 | compat_long_t ru_msgrcv; | |
324 | compat_long_t ru_nsignals; | |
325 | compat_long_t ru_nvcsw; | |
326 | compat_long_t ru_nivcsw; | |
327 | }; | |
328 | ||
4800a5bb CM |
329 | extern int put_compat_rusage(const struct rusage *, |
330 | struct compat_rusage __user *); | |
1da177e4 LT |
331 | |
332 | struct compat_siginfo; | |
333 | ||
1da177e4 LT |
334 | struct compat_dirent { |
335 | u32 d_ino; | |
336 | compat_off_t d_off; | |
337 | u16 d_reclen; | |
338 | char d_name[256]; | |
339 | }; | |
340 | ||
2b1c6bd7 CH |
341 | struct compat_ustat { |
342 | compat_daddr_t f_tfree; | |
343 | compat_ino_t f_tinode; | |
344 | char f_fname[6]; | |
345 | char f_fpack[6]; | |
346 | }; | |
347 | ||
1da177e4 LT |
348 | #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) |
349 | ||
350 | typedef struct compat_sigevent { | |
351 | compat_sigval_t sigev_value; | |
352 | compat_int_t sigev_signo; | |
353 | compat_int_t sigev_notify; | |
354 | union { | |
355 | compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; | |
356 | compat_int_t _tid; | |
357 | ||
358 | struct { | |
359 | compat_uptr_t _function; | |
360 | compat_uptr_t _attribute; | |
361 | } _sigev_thread; | |
362 | } _sigev_un; | |
363 | } compat_sigevent_t; | |
364 | ||
2dceba14 AB |
365 | struct compat_ifmap { |
366 | compat_ulong_t mem_start; | |
367 | compat_ulong_t mem_end; | |
368 | unsigned short base_addr; | |
369 | unsigned char irq; | |
370 | unsigned char dma; | |
371 | unsigned char port; | |
372 | }; | |
373 | ||
4800a5bb | 374 | struct compat_if_settings { |
7a50a240 AB |
375 | unsigned int type; /* Type of physical device or protocol */ |
376 | unsigned int size; /* Size of the data allocated by the caller */ | |
377 | compat_uptr_t ifs_ifsu; /* union of pointers */ | |
378 | }; | |
379 | ||
2dceba14 | 380 | struct compat_ifreq { |
7a50a240 AB |
381 | union { |
382 | char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ | |
383 | } ifr_ifrn; | |
384 | union { | |
385 | struct sockaddr ifru_addr; | |
386 | struct sockaddr ifru_dstaddr; | |
387 | struct sockaddr ifru_broadaddr; | |
388 | struct sockaddr ifru_netmask; | |
389 | struct sockaddr ifru_hwaddr; | |
390 | short ifru_flags; | |
391 | compat_int_t ifru_ivalue; | |
392 | compat_int_t ifru_mtu; | |
393 | struct compat_ifmap ifru_map; | |
394 | char ifru_slave[IFNAMSIZ]; /* Just fits the size */ | |
2dceba14 | 395 | char ifru_newname[IFNAMSIZ]; |
7a50a240 AB |
396 | compat_caddr_t ifru_data; |
397 | struct compat_if_settings ifru_settings; | |
398 | } ifr_ifru; | |
2dceba14 AB |
399 | }; |
400 | ||
401 | struct compat_ifconf { | |
4800a5bb CM |
402 | compat_int_t ifc_len; /* size of buffer */ |
403 | compat_caddr_t ifcbuf; | |
2dceba14 AB |
404 | }; |
405 | ||
34f192c6 IM |
406 | struct compat_robust_list { |
407 | compat_uptr_t next; | |
408 | }; | |
409 | ||
410 | struct compat_robust_list_head { | |
411 | struct compat_robust_list list; | |
412 | compat_long_t futex_offset; | |
413 | compat_uptr_t list_op_pending; | |
414 | }; | |
415 | ||
495dfbf7 AV |
416 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
417 | struct compat_old_sigaction { | |
418 | compat_uptr_t sa_handler; | |
419 | compat_old_sigset_t sa_mask; | |
420 | compat_ulong_t sa_flags; | |
421 | compat_uptr_t sa_restorer; | |
422 | }; | |
423 | #endif | |
424 | ||
f1c316a3 SM |
425 | struct compat_keyctl_kdf_params { |
426 | compat_uptr_t hashname; | |
427 | compat_uptr_t otherinfo; | |
428 | __u32 otherinfolen; | |
429 | __u32 __spare[8]; | |
430 | }; | |
431 | ||
be84cb43 CM |
432 | struct compat_statfs; |
433 | struct compat_statfs64; | |
434 | struct compat_old_linux_dirent; | |
435 | struct compat_linux_dirent; | |
436 | struct linux_dirent64; | |
437 | struct compat_msghdr; | |
438 | struct compat_mmsghdr; | |
439 | struct compat_sysinfo; | |
440 | struct compat_sysctl_args; | |
441 | struct compat_kexec_segment; | |
442 | struct compat_mq_attr; | |
48b25c43 | 443 | struct compat_msgbuf; |
be84cb43 | 444 | |
34f192c6 IM |
445 | extern void compat_exit_robust_list(struct task_struct *curr); |
446 | ||
1da177e4 LT |
447 | #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) |
448 | ||
1e1fc133 | 449 | #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) |
1da177e4 | 450 | |
5fa3839a | 451 | long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, |
1da177e4 LT |
452 | unsigned long bitmap_size); |
453 | long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, | |
454 | unsigned long bitmap_size); | |
212a36a1 | 455 | int copy_siginfo_from_user32(siginfo_t *to, const struct compat_siginfo __user *from); |
ce395960 | 456 | int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from); |
1da177e4 LT |
457 | int get_compat_sigevent(struct sigevent *event, |
458 | const struct compat_sigevent __user *u_event); | |
459 | ||
643a6545 AM |
460 | static inline int compat_timeval_compare(struct compat_timeval *lhs, |
461 | struct compat_timeval *rhs) | |
462 | { | |
463 | if (lhs->tv_sec < rhs->tv_sec) | |
464 | return -1; | |
465 | if (lhs->tv_sec > rhs->tv_sec) | |
466 | return 1; | |
467 | return lhs->tv_usec - rhs->tv_usec; | |
468 | } | |
469 | ||
470 | static inline int compat_timespec_compare(struct compat_timespec *lhs, | |
471 | struct compat_timespec *rhs) | |
472 | { | |
473 | if (lhs->tv_sec < rhs->tv_sec) | |
474 | return -1; | |
475 | if (lhs->tv_sec > rhs->tv_sec) | |
476 | return 1; | |
477 | return lhs->tv_nsec - rhs->tv_nsec; | |
478 | } | |
479 | ||
3968cf62 | 480 | extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); |
fde9fc76 MR |
481 | |
482 | /* | |
483 | * Defined inline such that size can be compile time constant, which avoids | |
484 | * CONFIG_HARDENED_USERCOPY complaining about copies from task_struct | |
485 | */ | |
486 | static inline int | |
487 | put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set, | |
488 | unsigned int size) | |
489 | { | |
490 | /* size <= sizeof(compat_sigset_t) <= sizeof(sigset_t) */ | |
491 | #ifdef __BIG_ENDIAN | |
492 | compat_sigset_t v; | |
493 | switch (_NSIG_WORDS) { | |
494 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; | |
495 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; | |
496 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; | |
497 | case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0]; | |
498 | } | |
499 | return copy_to_user(compat, &v, size) ? -EFAULT : 0; | |
500 | #else | |
501 | return copy_to_user(compat, set, size) ? -EFAULT : 0; | |
502 | #endif | |
503 | } | |
bebfa101 | 504 | |
032d82d9 RM |
505 | extern int compat_ptrace_request(struct task_struct *child, |
506 | compat_long_t request, | |
507 | compat_ulong_t addr, compat_ulong_t data); | |
508 | ||
c269f196 RM |
509 | extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, |
510 | compat_ulong_t addr, compat_ulong_t data); | |
c269f196 | 511 | |
c679a089 DB |
512 | struct epoll_event; /* fortunately, this one is fixed-layout */ |
513 | ||
514 | extern ssize_t compat_rw_copy_check_uvector(int type, | |
515 | const struct compat_iovec __user *uvector, | |
516 | unsigned long nr_segs, | |
517 | unsigned long fast_segs, struct iovec *fast_pointer, | |
518 | struct iovec **ret_pointer); | |
519 | ||
520 | extern void __user *compat_alloc_user_space(unsigned long len); | |
521 | ||
522 | int compat_restore_altstack(const compat_stack_t __user *uss); | |
523 | int __compat_save_altstack(compat_stack_t __user *, unsigned long); | |
524 | #define compat_save_altstack_ex(uss, sp) do { \ | |
525 | compat_stack_t __user *__uss = uss; \ | |
526 | struct task_struct *t = current; \ | |
527 | put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ | |
528 | put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ | |
529 | put_user_ex(t->sas_ss_size, &__uss->ss_size); \ | |
530 | if (t->sas_ss_flags & SS_AUTODISARM) \ | |
531 | sas_ss_reset(t); \ | |
532 | } while (0); | |
533 | ||
f6dfb4fd | 534 | /* |
c679a089 | 535 | * These syscall function prototypes are kept in the same order as |
3e2052e5 DB |
536 | * include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls |
537 | * go below. | |
c679a089 DB |
538 | * |
539 | * Please note that these prototypes here are only provided for information | |
540 | * purposes, for static analysis, and for linking from the syscall table. | |
541 | * These functions should not be called elsewhere from kernel code. | |
7303e30e DB |
542 | * |
543 | * As the syscall calling convention may be different from the default | |
544 | * for architectures overriding the syscall calling convention, do not | |
545 | * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
f6dfb4fd | 546 | */ |
7303e30e | 547 | #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
c679a089 DB |
548 | asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); |
549 | asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, | |
550 | u32 __user *iocb); | |
551 | asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, | |
552 | compat_long_t min_nr, | |
553 | compat_long_t nr, | |
554 | struct io_event __user *events, | |
555 | struct compat_timespec __user *timeout); | |
556 | ||
557 | /* fs/cookies.c */ | |
558 | asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); | |
559 | ||
560 | /* fs/eventpoll.c */ | |
f6dfb4fd | 561 | asmlinkage long compat_sys_epoll_pwait(int epfd, |
35280bd4 | 562 | struct epoll_event __user *events, |
f6dfb4fd DL |
563 | int maxevents, int timeout, |
564 | const compat_sigset_t __user *sigmask, | |
565 | compat_size_t sigsetsize); | |
566 | ||
c679a089 DB |
567 | /* fs/fcntl.c */ |
568 | asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, | |
569 | compat_ulong_t arg); | |
570 | asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, | |
571 | compat_ulong_t arg); | |
97416ce8 | 572 | |
c679a089 DB |
573 | /* fs/ioctl.c */ |
574 | asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, | |
575 | compat_ulong_t arg); | |
140ff8b0 | 576 | |
c679a089 DB |
577 | /* fs/namespace.c */ |
578 | asmlinkage long compat_sys_mount(const char __user *dev_name, | |
579 | const char __user *dir_name, | |
580 | const char __user *type, compat_ulong_t flags, | |
581 | const void __user *data); | |
582 | ||
583 | /* fs/open.c */ | |
be84cb43 CM |
584 | asmlinkage long compat_sys_statfs(const char __user *pathname, |
585 | struct compat_statfs __user *buf); | |
be84cb43 CM |
586 | asmlinkage long compat_sys_statfs64(const char __user *pathname, |
587 | compat_size_t sz, | |
588 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
589 | asmlinkage long compat_sys_fstatfs(unsigned int fd, |
590 | struct compat_statfs __user *buf); | |
be84cb43 CM |
591 | asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, |
592 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
593 | asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); |
594 | asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); | |
595 | /* No generic prototype for truncate64, ftruncate64, fallocate */ | |
596 | asmlinkage long compat_sys_openat(int dfd, const char __user *filename, | |
597 | int flags, umode_t mode); | |
598 | ||
599 | /* fs/readdir.c */ | |
be84cb43 CM |
600 | asmlinkage long compat_sys_getdents(unsigned int fd, |
601 | struct compat_linux_dirent __user *dirent, | |
602 | unsigned int count); | |
c679a089 DB |
603 | |
604 | /* fs/read_write.c */ | |
605 | asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); | |
606 | asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, | |
607 | const struct compat_iovec __user *vec, compat_ulong_t vlen); | |
608 | asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, | |
609 | const struct compat_iovec __user *vec, compat_ulong_t vlen); | |
610 | /* No generic prototype for pread64 and pwrite64 */ | |
611 | asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, | |
612 | const struct compat_iovec __user *vec, | |
613 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); | |
614 | asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, | |
615 | const struct compat_iovec __user *vec, | |
616 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); | |
617 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 | |
618 | asmlinkage long compat_sys_preadv64(unsigned long fd, | |
619 | const struct compat_iovec __user *vec, | |
620 | unsigned long vlen, loff_t pos); | |
621 | #endif | |
622 | ||
623 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 | |
624 | asmlinkage long compat_sys_pwritev64(unsigned long fd, | |
625 | const struct compat_iovec __user *vec, | |
626 | unsigned long vlen, loff_t pos); | |
627 | #endif | |
628 | ||
629 | /* fs/sendfile.c */ | |
630 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
631 | compat_off_t __user *offset, compat_size_t count); | |
632 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
633 | compat_loff_t __user *offset, compat_size_t count); | |
634 | ||
635 | /* fs/select.c */ | |
be84cb43 CM |
636 | asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, |
637 | compat_ulong_t __user *outp, | |
638 | compat_ulong_t __user *exp, | |
639 | struct compat_timespec __user *tsp, | |
640 | void __user *sig); | |
641 | asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, | |
642 | unsigned int nfds, | |
643 | struct compat_timespec __user *tsp, | |
644 | const compat_sigset_t __user *sigmask, | |
645 | compat_size_t sigsetsize); | |
c679a089 DB |
646 | |
647 | /* fs/signalfd.c */ | |
be84cb43 CM |
648 | asmlinkage long compat_sys_signalfd4(int ufd, |
649 | const compat_sigset_t __user *sigmask, | |
650 | compat_size_t sigsetsize, int flags); | |
be84cb43 | 651 | |
c679a089 DB |
652 | /* fs/splice.c */ |
653 | asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, | |
654 | unsigned int nr_segs, unsigned int flags); | |
655 | ||
656 | /* fs/stat.c */ | |
657 | asmlinkage long compat_sys_newfstatat(unsigned int dfd, | |
658 | const char __user *filename, | |
659 | struct compat_stat __user *statbuf, | |
660 | int flag); | |
661 | asmlinkage long compat_sys_newfstat(unsigned int fd, | |
662 | struct compat_stat __user *statbuf); | |
663 | ||
664 | /* fs/sync.c: No generic prototype for sync_file_range and sync_file_range2 */ | |
665 | ||
666 | /* fs/timerfd.c */ | |
667 | asmlinkage long compat_sys_timerfd_gettime(int ufd, | |
668 | struct compat_itimerspec __user *otmr); | |
669 | asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, | |
670 | const struct compat_itimerspec __user *utmr, | |
671 | struct compat_itimerspec __user *otmr); | |
672 | ||
673 | /* fs/utimes.c */ | |
674 | asmlinkage long compat_sys_utimensat(unsigned int dfd, | |
675 | const char __user *filename, | |
676 | struct compat_timespec __user *t, | |
677 | int flags); | |
678 | ||
679 | /* kernel/exit.c */ | |
680 | asmlinkage long compat_sys_waitid(int, compat_pid_t, | |
681 | struct compat_siginfo __user *, int, | |
682 | struct compat_rusage __user *); | |
683 | ||
684 | ||
685 | ||
686 | /* kernel/futex.c */ | |
687 | asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, | |
688 | struct compat_timespec __user *utime, u32 __user *uaddr2, | |
689 | u32 val3); | |
690 | asmlinkage long | |
691 | compat_sys_set_robust_list(struct compat_robust_list_head __user *head, | |
692 | compat_size_t len); | |
693 | asmlinkage long | |
694 | compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, | |
695 | compat_size_t __user *len_ptr); | |
696 | ||
697 | /* kernel/hrtimer.c */ | |
be84cb43 CM |
698 | asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, |
699 | struct compat_timespec __user *rmtp); | |
c679a089 DB |
700 | |
701 | /* kernel/itimer.c */ | |
be84cb43 CM |
702 | asmlinkage long compat_sys_getitimer(int which, |
703 | struct compat_itimerval __user *it); | |
704 | asmlinkage long compat_sys_setitimer(int which, | |
705 | struct compat_itimerval __user *in, | |
706 | struct compat_itimerval __user *out); | |
c679a089 DB |
707 | |
708 | /* kernel/kexec.c */ | |
709 | asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, | |
710 | compat_ulong_t nr_segments, | |
711 | struct compat_kexec_segment __user *, | |
712 | compat_ulong_t flags); | |
713 | ||
714 | /* kernel/posix-timers.c */ | |
be84cb43 CM |
715 | asmlinkage long compat_sys_timer_create(clockid_t which_clock, |
716 | struct compat_sigevent __user *timer_event_spec, | |
717 | timer_t __user *created_timer_id); | |
c679a089 DB |
718 | asmlinkage long compat_sys_timer_gettime(timer_t timer_id, |
719 | struct compat_itimerspec __user *setting); | |
be84cb43 CM |
720 | asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, |
721 | struct compat_itimerspec __user *new, | |
722 | struct compat_itimerspec __user *old); | |
be84cb43 CM |
723 | asmlinkage long compat_sys_clock_settime(clockid_t which_clock, |
724 | struct compat_timespec __user *tp); | |
725 | asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, | |
726 | struct compat_timespec __user *tp); | |
be84cb43 CM |
727 | asmlinkage long compat_sys_clock_getres(clockid_t which_clock, |
728 | struct compat_timespec __user *tp); | |
729 | asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, | |
730 | struct compat_timespec __user *rqtp, | |
731 | struct compat_timespec __user *rmtp); | |
c679a089 DB |
732 | |
733 | /* kernel/ptrace.c */ | |
734 | asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, | |
735 | compat_long_t addr, compat_long_t data); | |
736 | ||
737 | /* kernel/sched/core.c */ | |
738 | asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, | |
739 | unsigned int len, | |
740 | compat_ulong_t __user *user_mask_ptr); | |
741 | asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, | |
742 | unsigned int len, | |
743 | compat_ulong_t __user *user_mask_ptr); | |
744 | asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, | |
745 | struct compat_timespec __user *interval); | |
746 | ||
747 | /* kernel/signal.c */ | |
748 | asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, | |
749 | compat_stack_t __user *uoss_ptr); | |
be84cb43 CM |
750 | asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, |
751 | compat_size_t sigsetsize); | |
08d32fe5 | 752 | #ifndef CONFIG_ODD_RT_SIGACTION |
08d32fe5 AV |
753 | asmlinkage long compat_sys_rt_sigaction(int, |
754 | const struct compat_sigaction __user *, | |
755 | struct compat_sigaction __user *, | |
756 | compat_size_t); | |
757 | #endif | |
c679a089 DB |
758 | asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, |
759 | compat_sigset_t __user *oset, | |
760 | compat_size_t sigsetsize); | |
761 | asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, | |
762 | compat_size_t sigsetsize); | |
763 | asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, | |
764 | struct compat_siginfo __user *uinfo, | |
765 | struct compat_timespec __user *uts, compat_size_t sigsetsize); | |
75907d4d AV |
766 | asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, |
767 | struct compat_siginfo __user *uinfo); | |
c679a089 DB |
768 | /* No generic prototype for rt_sigreturn */ |
769 | ||
770 | /* kernel/sys.c */ | |
771 | asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); | |
772 | asmlinkage long compat_sys_getrlimit(unsigned int resource, | |
773 | struct compat_rlimit __user *rlim); | |
774 | asmlinkage long compat_sys_setrlimit(unsigned int resource, | |
775 | struct compat_rlimit __user *rlim); | |
776 | asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); | |
777 | ||
778 | /* kernel/time.c */ | |
779 | asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, | |
780 | struct timezone __user *tz); | |
781 | asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, | |
782 | struct timezone __user *tz); | |
783 | asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); | |
784 | ||
785 | /* kernel/timer.c */ | |
be84cb43 | 786 | asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); |
c679a089 DB |
787 | |
788 | /* ipc/mqueue.c */ | |
be84cb43 CM |
789 | asmlinkage long compat_sys_mq_open(const char __user *u_name, |
790 | int oflag, compat_mode_t mode, | |
791 | struct compat_mq_attr __user *u_attr); | |
792 | asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, | |
793 | const char __user *u_msg_ptr, | |
8eee9093 | 794 | compat_size_t msg_len, unsigned int msg_prio, |
be84cb43 CM |
795 | const struct compat_timespec __user *u_abs_timeout); |
796 | asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, | |
797 | char __user *u_msg_ptr, | |
8eee9093 | 798 | compat_size_t msg_len, unsigned int __user *u_msg_prio, |
be84cb43 | 799 | const struct compat_timespec __user *u_abs_timeout); |
c679a089 DB |
800 | asmlinkage long compat_sys_mq_notify(mqd_t mqdes, |
801 | const struct compat_sigevent __user *u_notification); | |
802 | asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, | |
803 | const struct compat_mq_attr __user *u_mqstat, | |
804 | struct compat_mq_attr __user *u_omqstat); | |
4c696ba7 | 805 | |
c679a089 DB |
806 | /* ipc/msg.c */ |
807 | asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); | |
808 | asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, | |
809 | compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); | |
810 | asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, | |
811 | compat_ssize_t msgsz, int msgflg); | |
c41d68a5 | 812 | |
c679a089 DB |
813 | /* ipc/sem.c */ |
814 | asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); | |
815 | asmlinkage long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, | |
816 | unsigned nsems, const struct compat_timespec __user *timeout); | |
817 | ||
818 | /* ipc/shm.c */ | |
819 | asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); | |
820 | asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); | |
821 | ||
822 | /* net/socket.c */ | |
823 | asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, | |
824 | unsigned flags, struct sockaddr __user *addr, | |
825 | int __user *addrlen); | |
826 | asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, | |
827 | char __user *optval, unsigned int optlen); | |
828 | asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, | |
829 | char __user *optval, int __user *optlen); | |
830 | asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, | |
831 | unsigned flags); | |
832 | asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, | |
833 | unsigned int flags); | |
834 | ||
835 | /* mm/filemap.c: No generic prototype for readahead */ | |
c41d68a5 | 836 | |
c679a089 DB |
837 | /* security/keys/keyctl.c */ |
838 | asmlinkage long compat_sys_keyctl(u32 option, | |
839 | u32 arg2, u32 arg3, u32 arg4, u32 arg5); | |
840 | ||
841 | /* arch/example/kernel/sys_example.c */ | |
842 | asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, | |
843 | const compat_uptr_t __user *envp); | |
844 | ||
845 | /* mm/fadvise.c: No generic prototype for fadvise64_64 */ | |
846 | ||
847 | /* mm/, CONFIG_MMU only */ | |
848 | asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, | |
849 | compat_ulong_t mode, | |
850 | compat_ulong_t __user *nmask, | |
851 | compat_ulong_t maxnode, compat_ulong_t flags); | |
852 | asmlinkage long compat_sys_get_mempolicy(int __user *policy, | |
853 | compat_ulong_t __user *nmask, | |
854 | compat_ulong_t maxnode, | |
855 | compat_ulong_t addr, | |
856 | compat_ulong_t flags); | |
857 | asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, | |
858 | compat_ulong_t maxnode); | |
859 | asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, | |
860 | compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, | |
861 | const compat_ulong_t __user *new_nodes); | |
862 | asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, | |
863 | __u32 __user *pages, | |
864 | const int __user *nodes, | |
865 | int __user *status, | |
866 | int flags); | |
867 | ||
868 | asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, | |
869 | compat_pid_t pid, int sig, | |
870 | struct compat_siginfo __user *uinfo); | |
871 | asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, | |
872 | unsigned vlen, unsigned int flags, | |
873 | struct compat_timespec __user *timeout); | |
874 | asmlinkage long compat_sys_wait4(compat_pid_t pid, | |
875 | compat_uint_t __user *stat_addr, int options, | |
876 | struct compat_rusage __user *ru); | |
877 | asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, | |
878 | int, const char __user *); | |
879 | asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, | |
880 | struct file_handle __user *handle, | |
881 | int flags); | |
882 | asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, | |
883 | struct compat_timex __user *tp); | |
884 | asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, | |
885 | unsigned vlen, unsigned int flags); | |
a67ba43d CM |
886 | asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, |
887 | const struct compat_iovec __user *lvec, | |
2f2728f6 HC |
888 | compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, |
889 | compat_ulong_t riovcnt, compat_ulong_t flags); | |
a67ba43d CM |
890 | asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, |
891 | const struct compat_iovec __user *lvec, | |
2f2728f6 HC |
892 | compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, |
893 | compat_ulong_t riovcnt, compat_ulong_t flags); | |
c679a089 DB |
894 | asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, |
895 | const compat_uptr_t __user *argv, | |
896 | const compat_uptr_t __user *envp, int flags); | |
897 | asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, | |
898 | const struct compat_iovec __user *vec, | |
899 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); | |
900 | asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, | |
901 | const struct compat_iovec __user *vec, | |
902 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); | |
903 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 | |
904 | asmlinkage long compat_sys_readv64v2(unsigned long fd, | |
905 | const struct compat_iovec __user *vec, | |
906 | unsigned long vlen, loff_t pos, rwf_t flags); | |
907 | #endif | |
a67ba43d | 908 | |
c679a089 DB |
909 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 |
910 | asmlinkage long compat_sys_pwritev64v2(unsigned long fd, | |
911 | const struct compat_iovec __user *vec, | |
912 | unsigned long vlen, loff_t pos, rwf_t flags); | |
913 | #endif | |
914 | ||
915 | ||
c679a089 DB |
916 | /* |
917 | * Deprecated system calls which are still defined in | |
918 | * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch | |
919 | */ | |
920 | ||
921 | /* __ARCH_WANT_SYSCALL_NO_AT */ | |
922 | asmlinkage long compat_sys_open(const char __user *filename, int flags, | |
923 | umode_t mode); | |
924 | asmlinkage long compat_sys_utimes(const char __user *filename, | |
925 | struct compat_timeval __user *t); | |
926 | ||
927 | /* __ARCH_WANT_SYSCALL_NO_FLAGS */ | |
928 | asmlinkage long compat_sys_signalfd(int ufd, | |
929 | const compat_sigset_t __user *sigmask, | |
930 | compat_size_t sigsetsize); | |
931 | ||
932 | /* __ARCH_WANT_SYSCALL_OFF_T */ | |
933 | asmlinkage long compat_sys_newstat(const char __user *filename, | |
934 | struct compat_stat __user *statbuf); | |
935 | asmlinkage long compat_sys_newlstat(const char __user *filename, | |
936 | struct compat_stat __user *statbuf); | |
937 | ||
938 | /* __ARCH_WANT_SYSCALL_DEPRECATED */ | |
939 | asmlinkage long compat_sys_time(compat_time_t __user *tloc); | |
940 | asmlinkage long compat_sys_utime(const char __user *filename, | |
941 | struct compat_utimbuf __user *t); | |
942 | asmlinkage long compat_sys_futimesat(unsigned int dfd, | |
943 | const char __user *filename, | |
944 | struct compat_timeval __user *t); | |
945 | asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, | |
946 | compat_ulong_t __user *outp, compat_ulong_t __user *exp, | |
947 | struct compat_timeval __user *tvp); | |
948 | asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); | |
949 | asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, | |
950 | unsigned flags); | |
951 | asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); | |
952 | ||
953 | /* obsolete: fs/readdir.c */ | |
954 | asmlinkage long compat_sys_old_readdir(unsigned int fd, | |
955 | struct compat_old_linux_dirent __user *, | |
956 | unsigned int count); | |
957 | ||
958 | /* obsolete: fs/select.c */ | |
959 | asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); | |
960 | ||
961 | /* obsolete: ipc */ | |
962 | asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); | |
90268439 | 963 | |
c679a089 | 964 | /* obsolete: kernel/signal.c */ |
e9fb8b7e CM |
965 | #ifdef __ARCH_WANT_SYS_SIGPENDING |
966 | asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); | |
967 | #endif | |
968 | ||
969 | #ifdef __ARCH_WANT_SYS_SIGPROCMASK | |
970 | asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, | |
971 | compat_old_sigset_t __user *oset); | |
972 | #endif | |
c679a089 DB |
973 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
974 | asmlinkage long compat_sys_sigaction(int sig, | |
975 | const struct compat_old_sigaction __user *act, | |
976 | struct compat_old_sigaction __user *oact); | |
977 | #endif | |
e9fb8b7e | 978 | |
c679a089 DB |
979 | /* obsolete: kernel/time/time.c */ |
980 | asmlinkage long compat_sys_stime(compat_time_t __user *tptr); | |
0ad50c38 | 981 | |
c679a089 DB |
982 | /* obsolete: net/socket.c */ |
983 | asmlinkage long compat_sys_socketcall(int call, u32 __user *args); | |
5180e3e2 | 984 | |
7303e30e DB |
985 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ |
986 | ||
79170fda | 987 | |
5180e3e2 AL |
988 | /* |
989 | * For most but not all architectures, "am I in a compat syscall?" and | |
990 | * "am I a compat task?" are the same question. For architectures on which | |
991 | * they aren't the same question, arch code can override in_compat_syscall. | |
992 | */ | |
993 | ||
994 | #ifndef in_compat_syscall | |
995 | static inline bool in_compat_syscall(void) { return is_compat_task(); } | |
996 | #endif | |
997 | ||
cd19c364 FW |
998 | /** |
999 | * ns_to_compat_timeval - Compat version of ns_to_timeval | |
1000 | * @nsec: the nanoseconds value to be converted | |
1001 | * | |
1002 | * Returns the compat_timeval representation of the nsec parameter. | |
1003 | */ | |
1004 | static inline struct compat_timeval ns_to_compat_timeval(s64 nsec) | |
1005 | { | |
1006 | struct timeval tv; | |
1007 | struct compat_timeval ctv; | |
1008 | ||
1009 | tv = ns_to_timeval(nsec); | |
1010 | ctv.tv_sec = tv.tv_sec; | |
1011 | ctv.tv_usec = tv.tv_usec; | |
1012 | ||
1013 | return ctv; | |
1014 | } | |
1015 | ||
1016 | #else /* !CONFIG_COMPAT */ | |
3c761ea0 LT |
1017 | |
1018 | #define is_compat_task() (0) | |
5180e3e2 | 1019 | static inline bool in_compat_syscall(void) { return false; } |
3c761ea0 | 1020 | |
1da177e4 | 1021 | #endif /* CONFIG_COMPAT */ |
5180e3e2 | 1022 | |
1da177e4 | 1023 | #endif /* _LINUX_COMPAT_H */ |