Commit | Line | Data |
---|---|---|
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 | 9 | #include <linux/types.h> |
9afc5eee | 10 | #include <linux/time.h> |
1da177e4 LT |
11 | |
12 | #include <linux/stat.h> | |
13 | #include <linux/param.h> /* for HZ */ | |
14 | #include <linux/sem.h> | |
2dceba14 AB |
15 | #include <linux/socket.h> |
16 | #include <linux/if.h> | |
be84cb43 | 17 | #include <linux/fs.h> |
45e9683e | 18 | #include <linux/aio_abi.h> /* for aio_context_t */ |
fde9fc76 | 19 | #include <linux/uaccess.h> |
f5b972e9 | 20 | #include <linux/unistd.h> |
1da177e4 LT |
21 | |
22 | #include <asm/compat.h> | |
2b5a9a37 AB |
23 | |
24 | #ifdef CONFIG_COMPAT | |
1da177e4 | 25 | #include <asm/siginfo.h> |
3f2e05e9 | 26 | #include <asm/signal.h> |
5055c677 | 27 | #endif |
1da177e4 | 28 | |
7303e30e DB |
29 | #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
30 | /* | |
31 | * It may be useful for an architecture to override the definitions of the | |
32 | * COMPAT_SYSCALL_DEFINE0 and COMPAT_SYSCALL_DEFINEx() macros, in particular | |
33 | * to use a different calling convention for syscalls. To allow for that, | |
34 | + the prototypes for the compat_sys_*() functions below will *not* be included | |
35 | * if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
36 | */ | |
37 | #include <asm/syscall_wrapper.h> | |
38 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ | |
39 | ||
45e87781 L |
40 | #ifndef COMPAT_USE_64BIT_TIME |
41 | #define COMPAT_USE_64BIT_TIME 0 | |
42 | #endif | |
43 | ||
46836613 | 44 | #ifndef __SC_DELOUSE |
4f59c718 | 45 | #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v)) |
46836613 AV |
46 | #endif |
47 | ||
7303e30e | 48 | #ifndef COMPAT_SYSCALL_DEFINE0 |
217f4433 | 49 | #define COMPAT_SYSCALL_DEFINE0(name) \ |
c9a21195 HM |
50 | asmlinkage long compat_sys_##name(void); \ |
51 | ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \ | |
217f4433 | 52 | asmlinkage long compat_sys_##name(void) |
7303e30e | 53 | #endif /* COMPAT_SYSCALL_DEFINE0 */ |
217f4433 | 54 | |
46836613 AV |
55 | #define COMPAT_SYSCALL_DEFINE1(name, ...) \ |
56 | COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) | |
57 | #define COMPAT_SYSCALL_DEFINE2(name, ...) \ | |
58 | COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) | |
59 | #define COMPAT_SYSCALL_DEFINE3(name, ...) \ | |
60 | COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) | |
61 | #define COMPAT_SYSCALL_DEFINE4(name, ...) \ | |
62 | COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) | |
63 | #define COMPAT_SYSCALL_DEFINE5(name, ...) \ | |
64 | COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) | |
65 | #define COMPAT_SYSCALL_DEFINE6(name, ...) \ | |
66 | COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) | |
67 | ||
5ac9efa3 DB |
68 | /* |
69 | * The asmlinkage stub is aliased to a function named __se_compat_sys_*() which | |
70 | * sign-extends 32-bit ints to longs whenever needed. The actual work is | |
71 | * done within __do_compat_sys_*(). | |
72 | */ | |
7303e30e | 73 | #ifndef COMPAT_SYSCALL_DEFINEx |
5ac9efa3 | 74 | #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ |
bee20031 AB |
75 | __diag_push(); \ |
76 | __diag_ignore(GCC, 8, "-Wattribute-alias", \ | |
77 | "Type aliasing is used to sanitize syscall arguments");\ | |
5ac9efa3 DB |
78 | asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ |
79 | asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ | |
80 | __attribute__((alias(__stringify(__se_compat_sys##name)))); \ | |
81 | ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ | |
82 | static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ | |
83 | asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ | |
84 | asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ | |
85 | { \ | |
bee20031 AB |
86 | long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ |
87 | __MAP(x,__SC_TEST,__VA_ARGS__); \ | |
88 | return ret; \ | |
5ac9efa3 | 89 | } \ |
bee20031 | 90 | __diag_pop(); \ |
5ac9efa3 | 91 | static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) |
7303e30e | 92 | #endif /* COMPAT_SYSCALL_DEFINEx */ |
46836613 | 93 | |
5055c677 DD |
94 | #ifdef CONFIG_COMPAT |
95 | ||
9b064fc3 AV |
96 | #ifndef compat_user_stack_pointer |
97 | #define compat_user_stack_pointer() current_user_stack_pointer() | |
98 | #endif | |
90268439 AV |
99 | #ifndef compat_sigaltstack /* we'll need that for MIPS */ |
100 | typedef struct compat_sigaltstack { | |
101 | compat_uptr_t ss_sp; | |
102 | int ss_flags; | |
103 | compat_size_t ss_size; | |
104 | } compat_stack_t; | |
105 | #endif | |
22839869 WD |
106 | #ifndef COMPAT_MINSIGSTKSZ |
107 | #define COMPAT_MINSIGSTKSZ MINSIGSTKSZ | |
108 | #endif | |
90268439 | 109 | |
1da177e4 LT |
110 | #define compat_jiffies_to_clock_t(x) \ |
111 | (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) | |
112 | ||
202e5979 SR |
113 | typedef __compat_uid32_t compat_uid_t; |
114 | typedef __compat_gid32_t compat_gid_t; | |
115 | ||
5d0e5283 | 116 | struct compat_sel_arg_struct; |
1da177e4 LT |
117 | struct rusage; |
118 | ||
1da177e4 | 119 | struct compat_itimerval { |
9afc5eee AB |
120 | struct old_timeval32 it_interval; |
121 | struct old_timeval32 it_value; | |
1da177e4 LT |
122 | }; |
123 | ||
54ad9c46 AV |
124 | struct itimerval; |
125 | int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *); | |
126 | int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *); | |
127 | ||
1da177e4 LT |
128 | struct compat_tms { |
129 | compat_clock_t tms_utime; | |
130 | compat_clock_t tms_stime; | |
131 | compat_clock_t tms_cutime; | |
132 | compat_clock_t tms_cstime; | |
133 | }; | |
134 | ||
135 | #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) | |
136 | ||
137 | typedef struct { | |
138 | compat_sigset_word sig[_COMPAT_NSIG_WORDS]; | |
139 | } compat_sigset_t; | |
140 | ||
b772434b | 141 | int set_compat_user_sigmask(const compat_sigset_t __user *umask, |
ded653cc DD |
142 | size_t sigsetsize); |
143 | ||
08d32fe5 | 144 | struct compat_sigaction { |
2a148698 | 145 | #ifndef __ARCH_HAS_IRIX_SIGACTION |
08d32fe5 AV |
146 | compat_uptr_t sa_handler; |
147 | compat_ulong_t sa_flags; | |
148 | #else | |
2a148698 | 149 | compat_uint_t sa_flags; |
08d32fe5 AV |
150 | compat_uptr_t sa_handler; |
151 | #endif | |
152 | #ifdef __ARCH_HAS_SA_RESTORER | |
153 | compat_uptr_t sa_restorer; | |
154 | #endif | |
155 | compat_sigset_t sa_mask __packed; | |
156 | }; | |
08d32fe5 | 157 | |
b713da69 AV |
158 | typedef union compat_sigval { |
159 | compat_int_t sival_int; | |
160 | compat_uptr_t sival_ptr; | |
161 | } compat_sigval_t; | |
162 | ||
163 | typedef struct compat_siginfo { | |
164 | int si_signo; | |
165 | #ifndef __ARCH_HAS_SWAPPED_SIGINFO | |
166 | int si_errno; | |
167 | int si_code; | |
168 | #else | |
169 | int si_code; | |
170 | int si_errno; | |
171 | #endif | |
172 | ||
173 | union { | |
174 | int _pad[128/sizeof(int) - 3]; | |
175 | ||
176 | /* kill() */ | |
177 | struct { | |
178 | compat_pid_t _pid; /* sender's pid */ | |
179 | __compat_uid32_t _uid; /* sender's uid */ | |
180 | } _kill; | |
181 | ||
182 | /* POSIX.1b timers */ | |
183 | struct { | |
184 | compat_timer_t _tid; /* timer id */ | |
185 | int _overrun; /* overrun count */ | |
186 | compat_sigval_t _sigval; /* same as below */ | |
187 | } _timer; | |
188 | ||
189 | /* POSIX.1b signals */ | |
190 | struct { | |
191 | compat_pid_t _pid; /* sender's pid */ | |
192 | __compat_uid32_t _uid; /* sender's uid */ | |
193 | compat_sigval_t _sigval; | |
194 | } _rt; | |
195 | ||
196 | /* SIGCHLD */ | |
197 | struct { | |
198 | compat_pid_t _pid; /* which child */ | |
199 | __compat_uid32_t _uid; /* sender's uid */ | |
200 | int _status; /* exit code */ | |
201 | compat_clock_t _utime; | |
202 | compat_clock_t _stime; | |
203 | } _sigchld; | |
204 | ||
205 | #ifdef CONFIG_X86_X32_ABI | |
206 | /* SIGCHLD (x32 version) */ | |
207 | struct { | |
208 | compat_pid_t _pid; /* which child */ | |
209 | __compat_uid32_t _uid; /* sender's uid */ | |
210 | int _status; /* exit code */ | |
211 | compat_s64 _utime; | |
212 | compat_s64 _stime; | |
213 | } _sigchld_x32; | |
214 | #endif | |
215 | ||
216 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ | |
217 | struct { | |
218 | compat_uptr_t _addr; /* faulting insn/memory ref. */ | |
219 | #ifdef __ARCH_SI_TRAPNO | |
220 | int _trapno; /* TRAP # which caused the signal */ | |
221 | #endif | |
8420f719 EB |
222 | #define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \ |
223 | sizeof(short) : __alignof__(compat_uptr_t)) | |
b713da69 | 224 | union { |
b68a68d3 EB |
225 | /* |
226 | * used when si_code=BUS_MCEERR_AR or | |
227 | * used when si_code=BUS_MCEERR_AO | |
228 | */ | |
229 | short int _addr_lsb; /* Valid LSB of the reported address. */ | |
b713da69 AV |
230 | /* used when si_code=SEGV_BNDERR */ |
231 | struct { | |
8420f719 | 232 | char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD]; |
b713da69 AV |
233 | compat_uptr_t _lower; |
234 | compat_uptr_t _upper; | |
235 | } _addr_bnd; | |
236 | /* used when si_code=SEGV_PKUERR */ | |
b68a68d3 | 237 | struct { |
8420f719 | 238 | char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD]; |
b68a68d3 EB |
239 | u32 _pkey; |
240 | } _addr_pkey; | |
b713da69 AV |
241 | }; |
242 | } _sigfault; | |
243 | ||
244 | /* SIGPOLL */ | |
245 | struct { | |
246 | compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
247 | int _fd; | |
248 | } _sigpoll; | |
249 | ||
250 | struct { | |
251 | compat_uptr_t _call_addr; /* calling user insn */ | |
252 | int _syscall; /* triggering system call number */ | |
253 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ | |
254 | } _sigsys; | |
255 | } _sifields; | |
256 | } compat_siginfo_t; | |
257 | ||
6684ba20 PA |
258 | /* |
259 | * These functions operate on 32- or 64-bit specs depending on | |
81993e81 | 260 | * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments. |
6684ba20 PA |
261 | */ |
262 | extern int compat_get_timespec(struct timespec *, const void __user *); | |
263 | extern int compat_put_timespec(const struct timespec *, void __user *); | |
264 | extern int compat_get_timeval(struct timeval *, const void __user *); | |
265 | extern int compat_put_timeval(const struct timeval *, void __user *); | |
1da177e4 LT |
266 | |
267 | struct compat_iovec { | |
268 | compat_uptr_t iov_base; | |
269 | compat_size_t iov_len; | |
270 | }; | |
271 | ||
272 | struct compat_rlimit { | |
273 | compat_ulong_t rlim_cur; | |
274 | compat_ulong_t rlim_max; | |
275 | }; | |
276 | ||
277 | struct compat_rusage { | |
9afc5eee AB |
278 | struct old_timeval32 ru_utime; |
279 | struct old_timeval32 ru_stime; | |
1da177e4 LT |
280 | compat_long_t ru_maxrss; |
281 | compat_long_t ru_ixrss; | |
282 | compat_long_t ru_idrss; | |
283 | compat_long_t ru_isrss; | |
284 | compat_long_t ru_minflt; | |
285 | compat_long_t ru_majflt; | |
286 | compat_long_t ru_nswap; | |
287 | compat_long_t ru_inblock; | |
288 | compat_long_t ru_oublock; | |
289 | compat_long_t ru_msgsnd; | |
290 | compat_long_t ru_msgrcv; | |
291 | compat_long_t ru_nsignals; | |
292 | compat_long_t ru_nvcsw; | |
293 | compat_long_t ru_nivcsw; | |
294 | }; | |
295 | ||
4800a5bb CM |
296 | extern int put_compat_rusage(const struct rusage *, |
297 | struct compat_rusage __user *); | |
1da177e4 LT |
298 | |
299 | struct compat_siginfo; | |
7a074e96 | 300 | struct __compat_aio_sigset; |
1da177e4 | 301 | |
1da177e4 LT |
302 | struct compat_dirent { |
303 | u32 d_ino; | |
304 | compat_off_t d_off; | |
305 | u16 d_reclen; | |
306 | char d_name[256]; | |
307 | }; | |
308 | ||
2b1c6bd7 CH |
309 | struct compat_ustat { |
310 | compat_daddr_t f_tfree; | |
311 | compat_ino_t f_tinode; | |
312 | char f_fname[6]; | |
313 | char f_fpack[6]; | |
314 | }; | |
315 | ||
1da177e4 LT |
316 | #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) |
317 | ||
318 | typedef struct compat_sigevent { | |
319 | compat_sigval_t sigev_value; | |
320 | compat_int_t sigev_signo; | |
321 | compat_int_t sigev_notify; | |
322 | union { | |
323 | compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; | |
324 | compat_int_t _tid; | |
325 | ||
326 | struct { | |
327 | compat_uptr_t _function; | |
328 | compat_uptr_t _attribute; | |
329 | } _sigev_thread; | |
330 | } _sigev_un; | |
331 | } compat_sigevent_t; | |
332 | ||
2dceba14 AB |
333 | struct compat_ifmap { |
334 | compat_ulong_t mem_start; | |
335 | compat_ulong_t mem_end; | |
336 | unsigned short base_addr; | |
337 | unsigned char irq; | |
338 | unsigned char dma; | |
339 | unsigned char port; | |
340 | }; | |
341 | ||
4800a5bb | 342 | struct compat_if_settings { |
7a50a240 AB |
343 | unsigned int type; /* Type of physical device or protocol */ |
344 | unsigned int size; /* Size of the data allocated by the caller */ | |
345 | compat_uptr_t ifs_ifsu; /* union of pointers */ | |
346 | }; | |
347 | ||
2dceba14 | 348 | struct compat_ifreq { |
7a50a240 AB |
349 | union { |
350 | char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ | |
351 | } ifr_ifrn; | |
352 | union { | |
353 | struct sockaddr ifru_addr; | |
354 | struct sockaddr ifru_dstaddr; | |
355 | struct sockaddr ifru_broadaddr; | |
356 | struct sockaddr ifru_netmask; | |
357 | struct sockaddr ifru_hwaddr; | |
358 | short ifru_flags; | |
359 | compat_int_t ifru_ivalue; | |
360 | compat_int_t ifru_mtu; | |
361 | struct compat_ifmap ifru_map; | |
362 | char ifru_slave[IFNAMSIZ]; /* Just fits the size */ | |
2dceba14 | 363 | char ifru_newname[IFNAMSIZ]; |
7a50a240 AB |
364 | compat_caddr_t ifru_data; |
365 | struct compat_if_settings ifru_settings; | |
366 | } ifr_ifru; | |
2dceba14 AB |
367 | }; |
368 | ||
369 | struct compat_ifconf { | |
4800a5bb CM |
370 | compat_int_t ifc_len; /* size of buffer */ |
371 | compat_caddr_t ifcbuf; | |
2dceba14 AB |
372 | }; |
373 | ||
34f192c6 IM |
374 | struct compat_robust_list { |
375 | compat_uptr_t next; | |
376 | }; | |
377 | ||
378 | struct compat_robust_list_head { | |
379 | struct compat_robust_list list; | |
380 | compat_long_t futex_offset; | |
381 | compat_uptr_t list_op_pending; | |
382 | }; | |
383 | ||
495dfbf7 AV |
384 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
385 | struct compat_old_sigaction { | |
386 | compat_uptr_t sa_handler; | |
387 | compat_old_sigset_t sa_mask; | |
388 | compat_ulong_t sa_flags; | |
389 | compat_uptr_t sa_restorer; | |
390 | }; | |
391 | #endif | |
392 | ||
f1c316a3 SM |
393 | struct compat_keyctl_kdf_params { |
394 | compat_uptr_t hashname; | |
395 | compat_uptr_t otherinfo; | |
396 | __u32 otherinfolen; | |
397 | __u32 __spare[8]; | |
398 | }; | |
399 | ||
be84cb43 CM |
400 | struct compat_statfs; |
401 | struct compat_statfs64; | |
402 | struct compat_old_linux_dirent; | |
403 | struct compat_linux_dirent; | |
404 | struct linux_dirent64; | |
405 | struct compat_msghdr; | |
406 | struct compat_mmsghdr; | |
407 | struct compat_sysinfo; | |
408 | struct compat_sysctl_args; | |
409 | struct compat_kexec_segment; | |
410 | struct compat_mq_attr; | |
48b25c43 | 411 | struct compat_msgbuf; |
be84cb43 | 412 | |
34f192c6 IM |
413 | extern void compat_exit_robust_list(struct task_struct *curr); |
414 | ||
1da177e4 LT |
415 | #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) |
416 | ||
1e1fc133 | 417 | #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) |
1da177e4 | 418 | |
5fa3839a | 419 | long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, |
1da177e4 LT |
420 | unsigned long bitmap_size); |
421 | long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, | |
422 | unsigned long bitmap_size); | |
ae7795bc EB |
423 | int copy_siginfo_from_user32(kernel_siginfo_t *to, const struct compat_siginfo __user *from); |
424 | int copy_siginfo_to_user32(struct compat_siginfo __user *to, const kernel_siginfo_t *from); | |
1da177e4 LT |
425 | int get_compat_sigevent(struct sigevent *event, |
426 | const struct compat_sigevent __user *u_event); | |
427 | ||
9afc5eee AB |
428 | static inline int old_timeval32_compare(struct old_timeval32 *lhs, |
429 | struct old_timeval32 *rhs) | |
643a6545 AM |
430 | { |
431 | if (lhs->tv_sec < rhs->tv_sec) | |
432 | return -1; | |
433 | if (lhs->tv_sec > rhs->tv_sec) | |
434 | return 1; | |
435 | return lhs->tv_usec - rhs->tv_usec; | |
436 | } | |
437 | ||
9afc5eee AB |
438 | static inline int old_timespec32_compare(struct old_timespec32 *lhs, |
439 | struct old_timespec32 *rhs) | |
643a6545 AM |
440 | { |
441 | if (lhs->tv_sec < rhs->tv_sec) | |
442 | return -1; | |
443 | if (lhs->tv_sec > rhs->tv_sec) | |
444 | return 1; | |
445 | return lhs->tv_nsec - rhs->tv_nsec; | |
446 | } | |
447 | ||
3968cf62 | 448 | extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); |
fde9fc76 MR |
449 | |
450 | /* | |
451 | * Defined inline such that size can be compile time constant, which avoids | |
452 | * CONFIG_HARDENED_USERCOPY complaining about copies from task_struct | |
453 | */ | |
454 | static inline int | |
455 | put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set, | |
456 | unsigned int size) | |
457 | { | |
458 | /* size <= sizeof(compat_sigset_t) <= sizeof(sigset_t) */ | |
459 | #ifdef __BIG_ENDIAN | |
460 | compat_sigset_t v; | |
461 | switch (_NSIG_WORDS) { | |
462 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; | |
89976005 | 463 | /* fall through */ |
fde9fc76 | 464 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; |
89976005 | 465 | /* fall through */ |
fde9fc76 | 466 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; |
89976005 | 467 | /* fall through */ |
fde9fc76 MR |
468 | case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0]; |
469 | } | |
470 | return copy_to_user(compat, &v, size) ? -EFAULT : 0; | |
471 | #else | |
472 | return copy_to_user(compat, set, size) ? -EFAULT : 0; | |
473 | #endif | |
474 | } | |
bebfa101 | 475 | |
032d82d9 RM |
476 | extern int compat_ptrace_request(struct task_struct *child, |
477 | compat_long_t request, | |
478 | compat_ulong_t addr, compat_ulong_t data); | |
479 | ||
c269f196 RM |
480 | extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, |
481 | compat_ulong_t addr, compat_ulong_t data); | |
c269f196 | 482 | |
c679a089 DB |
483 | struct epoll_event; /* fortunately, this one is fixed-layout */ |
484 | ||
485 | extern ssize_t compat_rw_copy_check_uvector(int type, | |
486 | const struct compat_iovec __user *uvector, | |
487 | unsigned long nr_segs, | |
488 | unsigned long fast_segs, struct iovec *fast_pointer, | |
489 | struct iovec **ret_pointer); | |
490 | ||
491 | extern void __user *compat_alloc_user_space(unsigned long len); | |
492 | ||
493 | int compat_restore_altstack(const compat_stack_t __user *uss); | |
494 | int __compat_save_altstack(compat_stack_t __user *, unsigned long); | |
495 | #define compat_save_altstack_ex(uss, sp) do { \ | |
496 | compat_stack_t __user *__uss = uss; \ | |
497 | struct task_struct *t = current; \ | |
498 | put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ | |
499 | put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ | |
500 | put_user_ex(t->sas_ss_size, &__uss->ss_size); \ | |
501 | if (t->sas_ss_flags & SS_AUTODISARM) \ | |
502 | sas_ss_reset(t); \ | |
503 | } while (0); | |
504 | ||
f6dfb4fd | 505 | /* |
c679a089 | 506 | * These syscall function prototypes are kept in the same order as |
3e2052e5 DB |
507 | * include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls |
508 | * go below. | |
c679a089 DB |
509 | * |
510 | * Please note that these prototypes here are only provided for information | |
511 | * purposes, for static analysis, and for linking from the syscall table. | |
512 | * These functions should not be called elsewhere from kernel code. | |
7303e30e DB |
513 | * |
514 | * As the syscall calling convention may be different from the default | |
515 | * for architectures overriding the syscall calling convention, do not | |
516 | * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
f6dfb4fd | 517 | */ |
7303e30e | 518 | #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
c679a089 DB |
519 | asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); |
520 | asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, | |
521 | u32 __user *iocb); | |
7a074e96 CH |
522 | asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id, |
523 | compat_long_t min_nr, | |
524 | compat_long_t nr, | |
525 | struct io_event __user *events, | |
9afc5eee | 526 | struct old_timespec32 __user *timeout, |
7a074e96 | 527 | const struct __compat_aio_sigset __user *usig); |
7a35397f DD |
528 | asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id, |
529 | compat_long_t min_nr, | |
530 | compat_long_t nr, | |
531 | struct io_event __user *events, | |
532 | struct __kernel_timespec __user *timeout, | |
533 | const struct __compat_aio_sigset __user *usig); | |
c679a089 DB |
534 | |
535 | /* fs/cookies.c */ | |
536 | asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); | |
537 | ||
538 | /* fs/eventpoll.c */ | |
f6dfb4fd | 539 | asmlinkage long compat_sys_epoll_pwait(int epfd, |
35280bd4 | 540 | struct epoll_event __user *events, |
f6dfb4fd DL |
541 | int maxevents, int timeout, |
542 | const compat_sigset_t __user *sigmask, | |
543 | compat_size_t sigsetsize); | |
544 | ||
c679a089 DB |
545 | /* fs/fcntl.c */ |
546 | asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, | |
547 | compat_ulong_t arg); | |
548 | asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, | |
549 | compat_ulong_t arg); | |
97416ce8 | 550 | |
c679a089 DB |
551 | /* fs/ioctl.c */ |
552 | asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, | |
553 | compat_ulong_t arg); | |
140ff8b0 | 554 | |
c679a089 DB |
555 | /* fs/namespace.c */ |
556 | asmlinkage long compat_sys_mount(const char __user *dev_name, | |
557 | const char __user *dir_name, | |
558 | const char __user *type, compat_ulong_t flags, | |
559 | const void __user *data); | |
560 | ||
561 | /* fs/open.c */ | |
be84cb43 CM |
562 | asmlinkage long compat_sys_statfs(const char __user *pathname, |
563 | struct compat_statfs __user *buf); | |
be84cb43 CM |
564 | asmlinkage long compat_sys_statfs64(const char __user *pathname, |
565 | compat_size_t sz, | |
566 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
567 | asmlinkage long compat_sys_fstatfs(unsigned int fd, |
568 | struct compat_statfs __user *buf); | |
be84cb43 CM |
569 | asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, |
570 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
571 | asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); |
572 | asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); | |
573 | /* No generic prototype for truncate64, ftruncate64, fallocate */ | |
574 | asmlinkage long compat_sys_openat(int dfd, const char __user *filename, | |
575 | int flags, umode_t mode); | |
576 | ||
577 | /* fs/readdir.c */ | |
be84cb43 CM |
578 | asmlinkage long compat_sys_getdents(unsigned int fd, |
579 | struct compat_linux_dirent __user *dirent, | |
580 | unsigned int count); | |
c679a089 DB |
581 | |
582 | /* fs/read_write.c */ | |
583 | asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); | |
584 | asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, | |
585 | const struct compat_iovec __user *vec, compat_ulong_t vlen); | |
586 | asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, | |
587 | const struct compat_iovec __user *vec, compat_ulong_t vlen); | |
588 | /* No generic prototype for pread64 and pwrite64 */ | |
589 | asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, | |
590 | const struct compat_iovec __user *vec, | |
591 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); | |
592 | asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, | |
593 | const struct compat_iovec __user *vec, | |
594 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); | |
595 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 | |
596 | asmlinkage long compat_sys_preadv64(unsigned long fd, | |
597 | const struct compat_iovec __user *vec, | |
598 | unsigned long vlen, loff_t pos); | |
599 | #endif | |
600 | ||
601 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 | |
602 | asmlinkage long compat_sys_pwritev64(unsigned long fd, | |
603 | const struct compat_iovec __user *vec, | |
604 | unsigned long vlen, loff_t pos); | |
605 | #endif | |
606 | ||
607 | /* fs/sendfile.c */ | |
608 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
609 | compat_off_t __user *offset, compat_size_t count); | |
610 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
611 | compat_loff_t __user *offset, compat_size_t count); | |
612 | ||
613 | /* fs/select.c */ | |
8dabe724 | 614 | asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp, |
be84cb43 CM |
615 | compat_ulong_t __user *outp, |
616 | compat_ulong_t __user *exp, | |
9afc5eee | 617 | struct old_timespec32 __user *tsp, |
be84cb43 | 618 | void __user *sig); |
e024707b DD |
619 | asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp, |
620 | compat_ulong_t __user *outp, | |
621 | compat_ulong_t __user *exp, | |
622 | struct __kernel_timespec __user *tsp, | |
623 | void __user *sig); | |
8dabe724 | 624 | asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds, |
be84cb43 | 625 | unsigned int nfds, |
9afc5eee | 626 | struct old_timespec32 __user *tsp, |
be84cb43 CM |
627 | const compat_sigset_t __user *sigmask, |
628 | compat_size_t sigsetsize); | |
8bd27a30 DD |
629 | asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds, |
630 | unsigned int nfds, | |
631 | struct __kernel_timespec __user *tsp, | |
632 | const compat_sigset_t __user *sigmask, | |
633 | compat_size_t sigsetsize); | |
c679a089 DB |
634 | |
635 | /* fs/signalfd.c */ | |
be84cb43 CM |
636 | asmlinkage long compat_sys_signalfd4(int ufd, |
637 | const compat_sigset_t __user *sigmask, | |
638 | compat_size_t sigsetsize, int flags); | |
be84cb43 | 639 | |
c679a089 DB |
640 | /* fs/splice.c */ |
641 | asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, | |
642 | unsigned int nr_segs, unsigned int flags); | |
643 | ||
644 | /* fs/stat.c */ | |
645 | asmlinkage long compat_sys_newfstatat(unsigned int dfd, | |
646 | const char __user *filename, | |
647 | struct compat_stat __user *statbuf, | |
648 | int flag); | |
649 | asmlinkage long compat_sys_newfstat(unsigned int fd, | |
650 | struct compat_stat __user *statbuf); | |
651 | ||
652 | /* fs/sync.c: No generic prototype for sync_file_range and sync_file_range2 */ | |
653 | ||
c679a089 DB |
654 | /* kernel/exit.c */ |
655 | asmlinkage long compat_sys_waitid(int, compat_pid_t, | |
656 | struct compat_siginfo __user *, int, | |
657 | struct compat_rusage __user *); | |
658 | ||
659 | ||
660 | ||
661 | /* kernel/futex.c */ | |
c679a089 DB |
662 | asmlinkage long |
663 | compat_sys_set_robust_list(struct compat_robust_list_head __user *head, | |
664 | compat_size_t len); | |
665 | asmlinkage long | |
666 | compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, | |
667 | compat_size_t __user *len_ptr); | |
668 | ||
c679a089 | 669 | /* kernel/itimer.c */ |
be84cb43 CM |
670 | asmlinkage long compat_sys_getitimer(int which, |
671 | struct compat_itimerval __user *it); | |
672 | asmlinkage long compat_sys_setitimer(int which, | |
673 | struct compat_itimerval __user *in, | |
674 | struct compat_itimerval __user *out); | |
c679a089 DB |
675 | |
676 | /* kernel/kexec.c */ | |
677 | asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, | |
678 | compat_ulong_t nr_segments, | |
679 | struct compat_kexec_segment __user *, | |
680 | compat_ulong_t flags); | |
681 | ||
682 | /* kernel/posix-timers.c */ | |
be84cb43 CM |
683 | asmlinkage long compat_sys_timer_create(clockid_t which_clock, |
684 | struct compat_sigevent __user *timer_event_spec, | |
685 | timer_t __user *created_timer_id); | |
c679a089 DB |
686 | |
687 | /* kernel/ptrace.c */ | |
688 | asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, | |
689 | compat_long_t addr, compat_long_t data); | |
690 | ||
691 | /* kernel/sched/core.c */ | |
692 | asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, | |
693 | unsigned int len, | |
694 | compat_ulong_t __user *user_mask_ptr); | |
695 | asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, | |
696 | unsigned int len, | |
697 | compat_ulong_t __user *user_mask_ptr); | |
c679a089 DB |
698 | |
699 | /* kernel/signal.c */ | |
700 | asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, | |
701 | compat_stack_t __user *uoss_ptr); | |
be84cb43 CM |
702 | asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, |
703 | compat_size_t sigsetsize); | |
08d32fe5 | 704 | #ifndef CONFIG_ODD_RT_SIGACTION |
08d32fe5 AV |
705 | asmlinkage long compat_sys_rt_sigaction(int, |
706 | const struct compat_sigaction __user *, | |
707 | struct compat_sigaction __user *, | |
708 | compat_size_t); | |
709 | #endif | |
c679a089 DB |
710 | asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, |
711 | compat_sigset_t __user *oset, | |
712 | compat_size_t sigsetsize); | |
713 | asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, | |
714 | compat_size_t sigsetsize); | |
8dabe724 | 715 | asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese, |
c679a089 | 716 | struct compat_siginfo __user *uinfo, |
9afc5eee | 717 | struct old_timespec32 __user *uts, compat_size_t sigsetsize); |
2367c4b5 AB |
718 | asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese, |
719 | struct compat_siginfo __user *uinfo, | |
720 | struct __kernel_timespec __user *uts, compat_size_t sigsetsize); | |
75907d4d AV |
721 | asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, |
722 | struct compat_siginfo __user *uinfo); | |
c679a089 DB |
723 | /* No generic prototype for rt_sigreturn */ |
724 | ||
725 | /* kernel/sys.c */ | |
726 | asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); | |
727 | asmlinkage long compat_sys_getrlimit(unsigned int resource, | |
728 | struct compat_rlimit __user *rlim); | |
729 | asmlinkage long compat_sys_setrlimit(unsigned int resource, | |
730 | struct compat_rlimit __user *rlim); | |
731 | asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); | |
732 | ||
733 | /* kernel/time.c */ | |
9afc5eee | 734 | asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv, |
c679a089 | 735 | struct timezone __user *tz); |
9afc5eee | 736 | asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv, |
c679a089 | 737 | struct timezone __user *tz); |
c679a089 DB |
738 | |
739 | /* kernel/timer.c */ | |
be84cb43 | 740 | asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); |
c679a089 DB |
741 | |
742 | /* ipc/mqueue.c */ | |
be84cb43 CM |
743 | asmlinkage long compat_sys_mq_open(const char __user *u_name, |
744 | int oflag, compat_mode_t mode, | |
745 | struct compat_mq_attr __user *u_attr); | |
c679a089 DB |
746 | asmlinkage long compat_sys_mq_notify(mqd_t mqdes, |
747 | const struct compat_sigevent __user *u_notification); | |
748 | asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, | |
749 | const struct compat_mq_attr __user *u_mqstat, | |
750 | struct compat_mq_attr __user *u_omqstat); | |
4c696ba7 | 751 | |
c679a089 DB |
752 | /* ipc/msg.c */ |
753 | asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); | |
754 | asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, | |
755 | compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); | |
756 | asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, | |
757 | compat_ssize_t msgsz, int msgflg); | |
c41d68a5 | 758 | |
c679a089 DB |
759 | /* ipc/sem.c */ |
760 | asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); | |
c679a089 DB |
761 | |
762 | /* ipc/shm.c */ | |
763 | asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); | |
764 | asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); | |
765 | ||
766 | /* net/socket.c */ | |
767 | asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, | |
768 | unsigned flags, struct sockaddr __user *addr, | |
769 | int __user *addrlen); | |
770 | asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, | |
771 | char __user *optval, unsigned int optlen); | |
772 | asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, | |
773 | char __user *optval, int __user *optlen); | |
774 | asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, | |
775 | unsigned flags); | |
776 | asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, | |
777 | unsigned int flags); | |
778 | ||
779 | /* mm/filemap.c: No generic prototype for readahead */ | |
c41d68a5 | 780 | |
c679a089 DB |
781 | /* security/keys/keyctl.c */ |
782 | asmlinkage long compat_sys_keyctl(u32 option, | |
783 | u32 arg2, u32 arg3, u32 arg4, u32 arg5); | |
784 | ||
785 | /* arch/example/kernel/sys_example.c */ | |
786 | asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, | |
787 | const compat_uptr_t __user *envp); | |
788 | ||
789 | /* mm/fadvise.c: No generic prototype for fadvise64_64 */ | |
790 | ||
791 | /* mm/, CONFIG_MMU only */ | |
792 | asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, | |
793 | compat_ulong_t mode, | |
794 | compat_ulong_t __user *nmask, | |
795 | compat_ulong_t maxnode, compat_ulong_t flags); | |
796 | asmlinkage long compat_sys_get_mempolicy(int __user *policy, | |
797 | compat_ulong_t __user *nmask, | |
798 | compat_ulong_t maxnode, | |
799 | compat_ulong_t addr, | |
800 | compat_ulong_t flags); | |
801 | asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, | |
802 | compat_ulong_t maxnode); | |
803 | asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, | |
804 | compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, | |
805 | const compat_ulong_t __user *new_nodes); | |
806 | asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, | |
807 | __u32 __user *pages, | |
808 | const int __user *nodes, | |
809 | int __user *status, | |
810 | int flags); | |
811 | ||
812 | asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, | |
813 | compat_pid_t pid, int sig, | |
814 | struct compat_siginfo __user *uinfo); | |
e11d4284 AB |
815 | asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg, |
816 | unsigned vlen, unsigned int flags, | |
817 | struct __kernel_timespec __user *timeout); | |
8dabe724 | 818 | asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg, |
c679a089 | 819 | unsigned vlen, unsigned int flags, |
9afc5eee | 820 | struct old_timespec32 __user *timeout); |
c679a089 DB |
821 | asmlinkage long compat_sys_wait4(compat_pid_t pid, |
822 | compat_uint_t __user *stat_addr, int options, | |
823 | struct compat_rusage __user *ru); | |
824 | asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, | |
825 | int, const char __user *); | |
826 | asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, | |
827 | struct file_handle __user *handle, | |
828 | int flags); | |
c679a089 DB |
829 | asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, |
830 | unsigned vlen, unsigned int flags); | |
a67ba43d CM |
831 | asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, |
832 | const struct compat_iovec __user *lvec, | |
2f2728f6 HC |
833 | compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, |
834 | compat_ulong_t riovcnt, compat_ulong_t flags); | |
a67ba43d CM |
835 | asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, |
836 | const struct compat_iovec __user *lvec, | |
2f2728f6 HC |
837 | compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, |
838 | compat_ulong_t riovcnt, compat_ulong_t flags); | |
c679a089 DB |
839 | asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, |
840 | const compat_uptr_t __user *argv, | |
841 | const compat_uptr_t __user *envp, int flags); | |
842 | asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, | |
843 | const struct compat_iovec __user *vec, | |
844 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); | |
845 | asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, | |
846 | const struct compat_iovec __user *vec, | |
847 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); | |
848 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 | |
849 | asmlinkage long compat_sys_readv64v2(unsigned long fd, | |
850 | const struct compat_iovec __user *vec, | |
851 | unsigned long vlen, loff_t pos, rwf_t flags); | |
852 | #endif | |
a67ba43d | 853 | |
c679a089 DB |
854 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 |
855 | asmlinkage long compat_sys_pwritev64v2(unsigned long fd, | |
856 | const struct compat_iovec __user *vec, | |
857 | unsigned long vlen, loff_t pos, rwf_t flags); | |
858 | #endif | |
859 | ||
860 | ||
c679a089 DB |
861 | /* |
862 | * Deprecated system calls which are still defined in | |
863 | * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch | |
864 | */ | |
865 | ||
866 | /* __ARCH_WANT_SYSCALL_NO_AT */ | |
867 | asmlinkage long compat_sys_open(const char __user *filename, int flags, | |
868 | umode_t mode); | |
c679a089 DB |
869 | |
870 | /* __ARCH_WANT_SYSCALL_NO_FLAGS */ | |
871 | asmlinkage long compat_sys_signalfd(int ufd, | |
872 | const compat_sigset_t __user *sigmask, | |
873 | compat_size_t sigsetsize); | |
874 | ||
875 | /* __ARCH_WANT_SYSCALL_OFF_T */ | |
876 | asmlinkage long compat_sys_newstat(const char __user *filename, | |
877 | struct compat_stat __user *statbuf); | |
878 | asmlinkage long compat_sys_newlstat(const char __user *filename, | |
879 | struct compat_stat __user *statbuf); | |
880 | ||
881 | /* __ARCH_WANT_SYSCALL_DEPRECATED */ | |
c679a089 DB |
882 | asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, |
883 | compat_ulong_t __user *outp, compat_ulong_t __user *exp, | |
9afc5eee | 884 | struct old_timeval32 __user *tvp); |
c679a089 DB |
885 | asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); |
886 | asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, | |
887 | unsigned flags); | |
888 | asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); | |
889 | ||
890 | /* obsolete: fs/readdir.c */ | |
891 | asmlinkage long compat_sys_old_readdir(unsigned int fd, | |
892 | struct compat_old_linux_dirent __user *, | |
893 | unsigned int count); | |
894 | ||
895 | /* obsolete: fs/select.c */ | |
896 | asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); | |
897 | ||
898 | /* obsolete: ipc */ | |
899 | asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); | |
90268439 | 900 | |
c679a089 | 901 | /* obsolete: kernel/signal.c */ |
e9fb8b7e CM |
902 | #ifdef __ARCH_WANT_SYS_SIGPENDING |
903 | asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); | |
904 | #endif | |
905 | ||
906 | #ifdef __ARCH_WANT_SYS_SIGPROCMASK | |
907 | asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, | |
908 | compat_old_sigset_t __user *oset); | |
909 | #endif | |
c679a089 DB |
910 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
911 | asmlinkage long compat_sys_sigaction(int sig, | |
912 | const struct compat_old_sigaction __user *act, | |
913 | struct compat_old_sigaction __user *oact); | |
914 | #endif | |
e9fb8b7e | 915 | |
c679a089 DB |
916 | /* obsolete: net/socket.c */ |
917 | asmlinkage long compat_sys_socketcall(int call, u32 __user *args); | |
5180e3e2 | 918 | |
7303e30e DB |
919 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ |
920 | ||
79170fda | 921 | |
5180e3e2 AL |
922 | /* |
923 | * For most but not all architectures, "am I in a compat syscall?" and | |
924 | * "am I a compat task?" are the same question. For architectures on which | |
925 | * they aren't the same question, arch code can override in_compat_syscall. | |
926 | */ | |
927 | ||
928 | #ifndef in_compat_syscall | |
929 | static inline bool in_compat_syscall(void) { return is_compat_task(); } | |
930 | #endif | |
931 | ||
cd19c364 | 932 | /** |
9afc5eee | 933 | * ns_to_old_timeval32 - Compat version of ns_to_timeval |
cd19c364 FW |
934 | * @nsec: the nanoseconds value to be converted |
935 | * | |
9afc5eee | 936 | * Returns the old_timeval32 representation of the nsec parameter. |
cd19c364 | 937 | */ |
9afc5eee | 938 | static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec) |
cd19c364 FW |
939 | { |
940 | struct timeval tv; | |
9afc5eee | 941 | struct old_timeval32 ctv; |
cd19c364 FW |
942 | |
943 | tv = ns_to_timeval(nsec); | |
944 | ctv.tv_sec = tv.tv_sec; | |
945 | ctv.tv_usec = tv.tv_usec; | |
946 | ||
947 | return ctv; | |
948 | } | |
949 | ||
9b54bf9d MR |
950 | /* |
951 | * Kernel code should not call compat syscalls (i.e., compat_sys_xyzyyz()) | |
952 | * directly. Instead, use one of the functions which work equivalently, such | |
953 | * as the kcompat_sys_xyzyyz() functions prototyped below. | |
954 | */ | |
955 | ||
956 | int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz, | |
957 | struct compat_statfs64 __user * buf); | |
958 | int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz, | |
959 | struct compat_statfs64 __user * buf); | |
960 | ||
cd19c364 | 961 | #else /* !CONFIG_COMPAT */ |
3c761ea0 LT |
962 | |
963 | #define is_compat_task() (0) | |
a846446b DS |
964 | /* Ensure no one redefines in_compat_syscall() under !CONFIG_COMPAT */ |
965 | #define in_compat_syscall in_compat_syscall | |
5180e3e2 | 966 | static inline bool in_compat_syscall(void) { return false; } |
3c761ea0 | 967 | |
1da177e4 | 968 | #endif /* CONFIG_COMPAT */ |
5180e3e2 | 969 | |
1da177e4 | 970 | #endif /* _LINUX_COMPAT_H */ |