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> | |
23 | #include <asm/siginfo.h> | |
3f2e05e9 | 24 | #include <asm/signal.h> |
1da177e4 | 25 | |
7303e30e DB |
26 | #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
27 | /* | |
28 | * It may be useful for an architecture to override the definitions of the | |
29 | * COMPAT_SYSCALL_DEFINE0 and COMPAT_SYSCALL_DEFINEx() macros, in particular | |
30 | * to use a different calling convention for syscalls. To allow for that, | |
31 | + the prototypes for the compat_sys_*() functions below will *not* be included | |
32 | * if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
33 | */ | |
34 | #include <asm/syscall_wrapper.h> | |
35 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ | |
36 | ||
45e87781 L |
37 | #ifndef COMPAT_USE_64BIT_TIME |
38 | #define COMPAT_USE_64BIT_TIME 0 | |
39 | #endif | |
40 | ||
46836613 | 41 | #ifndef __SC_DELOUSE |
4f59c718 | 42 | #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v)) |
46836613 AV |
43 | #endif |
44 | ||
7303e30e | 45 | #ifndef COMPAT_SYSCALL_DEFINE0 |
217f4433 | 46 | #define COMPAT_SYSCALL_DEFINE0(name) \ |
c9a21195 HM |
47 | asmlinkage long compat_sys_##name(void); \ |
48 | ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \ | |
217f4433 | 49 | asmlinkage long compat_sys_##name(void) |
7303e30e | 50 | #endif /* COMPAT_SYSCALL_DEFINE0 */ |
217f4433 | 51 | |
46836613 AV |
52 | #define COMPAT_SYSCALL_DEFINE1(name, ...) \ |
53 | COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) | |
54 | #define COMPAT_SYSCALL_DEFINE2(name, ...) \ | |
55 | COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) | |
56 | #define COMPAT_SYSCALL_DEFINE3(name, ...) \ | |
57 | COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) | |
58 | #define COMPAT_SYSCALL_DEFINE4(name, ...) \ | |
59 | COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) | |
60 | #define COMPAT_SYSCALL_DEFINE5(name, ...) \ | |
61 | COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) | |
62 | #define COMPAT_SYSCALL_DEFINE6(name, ...) \ | |
63 | COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) | |
64 | ||
5ac9efa3 DB |
65 | /* |
66 | * The asmlinkage stub is aliased to a function named __se_compat_sys_*() which | |
67 | * sign-extends 32-bit ints to longs whenever needed. The actual work is | |
68 | * done within __do_compat_sys_*(). | |
69 | */ | |
7303e30e | 70 | #ifndef COMPAT_SYSCALL_DEFINEx |
5ac9efa3 | 71 | #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ |
bee20031 AB |
72 | __diag_push(); \ |
73 | __diag_ignore(GCC, 8, "-Wattribute-alias", \ | |
74 | "Type aliasing is used to sanitize syscall arguments");\ | |
5ac9efa3 DB |
75 | asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ |
76 | __attribute__((alias(__stringify(__se_compat_sys##name)))); \ | |
77 | ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ | |
78 | static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ | |
79 | asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ | |
80 | asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ | |
81 | { \ | |
bee20031 AB |
82 | long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ |
83 | __MAP(x,__SC_TEST,__VA_ARGS__); \ | |
84 | return ret; \ | |
5ac9efa3 | 85 | } \ |
bee20031 | 86 | __diag_pop(); \ |
5ac9efa3 | 87 | static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) |
7303e30e | 88 | #endif /* COMPAT_SYSCALL_DEFINEx */ |
46836613 | 89 | |
bfdc5970 CH |
90 | struct compat_iovec { |
91 | compat_uptr_t iov_base; | |
92 | compat_size_t iov_len; | |
93 | }; | |
94 | ||
9b064fc3 AV |
95 | #ifndef compat_user_stack_pointer |
96 | #define compat_user_stack_pointer() current_user_stack_pointer() | |
97 | #endif | |
90268439 AV |
98 | #ifndef compat_sigaltstack /* we'll need that for MIPS */ |
99 | typedef struct compat_sigaltstack { | |
100 | compat_uptr_t ss_sp; | |
101 | int ss_flags; | |
102 | compat_size_t ss_size; | |
103 | } compat_stack_t; | |
104 | #endif | |
22839869 WD |
105 | #ifndef COMPAT_MINSIGSTKSZ |
106 | #define COMPAT_MINSIGSTKSZ MINSIGSTKSZ | |
107 | #endif | |
90268439 | 108 | |
1da177e4 LT |
109 | #define compat_jiffies_to_clock_t(x) \ |
110 | (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) | |
111 | ||
202e5979 SR |
112 | typedef __compat_uid32_t compat_uid_t; |
113 | typedef __compat_gid32_t compat_gid_t; | |
114 | ||
5d0e5283 | 115 | struct compat_sel_arg_struct; |
1da177e4 LT |
116 | struct rusage; |
117 | ||
c1745f84 | 118 | struct old_itimerval32; |
54ad9c46 | 119 | |
1da177e4 LT |
120 | struct compat_tms { |
121 | compat_clock_t tms_utime; | |
122 | compat_clock_t tms_stime; | |
123 | compat_clock_t tms_cutime; | |
124 | compat_clock_t tms_cstime; | |
125 | }; | |
126 | ||
127 | #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) | |
128 | ||
1a33b18b | 129 | #ifndef compat_sigset_t |
1da177e4 LT |
130 | typedef struct { |
131 | compat_sigset_word sig[_COMPAT_NSIG_WORDS]; | |
132 | } compat_sigset_t; | |
1a33b18b | 133 | #endif |
1da177e4 | 134 | |
b772434b | 135 | int set_compat_user_sigmask(const compat_sigset_t __user *umask, |
ded653cc DD |
136 | size_t sigsetsize); |
137 | ||
08d32fe5 | 138 | struct compat_sigaction { |
2a148698 | 139 | #ifndef __ARCH_HAS_IRIX_SIGACTION |
08d32fe5 AV |
140 | compat_uptr_t sa_handler; |
141 | compat_ulong_t sa_flags; | |
142 | #else | |
2a148698 | 143 | compat_uint_t sa_flags; |
08d32fe5 AV |
144 | compat_uptr_t sa_handler; |
145 | #endif | |
146 | #ifdef __ARCH_HAS_SA_RESTORER | |
147 | compat_uptr_t sa_restorer; | |
148 | #endif | |
149 | compat_sigset_t sa_mask __packed; | |
150 | }; | |
08d32fe5 | 151 | |
b713da69 AV |
152 | typedef union compat_sigval { |
153 | compat_int_t sival_int; | |
154 | compat_uptr_t sival_ptr; | |
155 | } compat_sigval_t; | |
156 | ||
157 | typedef struct compat_siginfo { | |
158 | int si_signo; | |
159 | #ifndef __ARCH_HAS_SWAPPED_SIGINFO | |
160 | int si_errno; | |
161 | int si_code; | |
162 | #else | |
163 | int si_code; | |
164 | int si_errno; | |
165 | #endif | |
166 | ||
167 | union { | |
168 | int _pad[128/sizeof(int) - 3]; | |
169 | ||
170 | /* kill() */ | |
171 | struct { | |
172 | compat_pid_t _pid; /* sender's pid */ | |
173 | __compat_uid32_t _uid; /* sender's uid */ | |
174 | } _kill; | |
175 | ||
176 | /* POSIX.1b timers */ | |
177 | struct { | |
178 | compat_timer_t _tid; /* timer id */ | |
179 | int _overrun; /* overrun count */ | |
180 | compat_sigval_t _sigval; /* same as below */ | |
181 | } _timer; | |
182 | ||
183 | /* POSIX.1b signals */ | |
184 | struct { | |
185 | compat_pid_t _pid; /* sender's pid */ | |
186 | __compat_uid32_t _uid; /* sender's uid */ | |
187 | compat_sigval_t _sigval; | |
188 | } _rt; | |
189 | ||
190 | /* SIGCHLD */ | |
191 | struct { | |
192 | compat_pid_t _pid; /* which child */ | |
193 | __compat_uid32_t _uid; /* sender's uid */ | |
194 | int _status; /* exit code */ | |
195 | compat_clock_t _utime; | |
196 | compat_clock_t _stime; | |
197 | } _sigchld; | |
198 | ||
199 | #ifdef CONFIG_X86_X32_ABI | |
200 | /* SIGCHLD (x32 version) */ | |
201 | struct { | |
202 | compat_pid_t _pid; /* which child */ | |
203 | __compat_uid32_t _uid; /* sender's uid */ | |
204 | int _status; /* exit code */ | |
205 | compat_s64 _utime; | |
206 | compat_s64 _stime; | |
207 | } _sigchld_x32; | |
208 | #endif | |
209 | ||
210 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ | |
211 | struct { | |
212 | compat_uptr_t _addr; /* faulting insn/memory ref. */ | |
8420f719 EB |
213 | #define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \ |
214 | sizeof(short) : __alignof__(compat_uptr_t)) | |
b713da69 | 215 | union { |
add0b32e EB |
216 | /* used on alpha and sparc */ |
217 | int _trapno; /* TRAP # which caused the signal */ | |
b68a68d3 EB |
218 | /* |
219 | * used when si_code=BUS_MCEERR_AR or | |
220 | * used when si_code=BUS_MCEERR_AO | |
221 | */ | |
222 | short int _addr_lsb; /* Valid LSB of the reported address. */ | |
b713da69 AV |
223 | /* used when si_code=SEGV_BNDERR */ |
224 | struct { | |
8420f719 | 225 | char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD]; |
b713da69 AV |
226 | compat_uptr_t _lower; |
227 | compat_uptr_t _upper; | |
228 | } _addr_bnd; | |
229 | /* used when si_code=SEGV_PKUERR */ | |
b68a68d3 | 230 | struct { |
8420f719 | 231 | char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD]; |
b68a68d3 EB |
232 | u32 _pkey; |
233 | } _addr_pkey; | |
fb6cc127 | 234 | /* used when si_code=TRAP_PERF */ |
0683b531 EB |
235 | struct { |
236 | compat_ulong_t _data; | |
237 | u32 _type; | |
238 | } _perf; | |
b713da69 AV |
239 | }; |
240 | } _sigfault; | |
241 | ||
242 | /* SIGPOLL */ | |
243 | struct { | |
244 | compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
245 | int _fd; | |
246 | } _sigpoll; | |
247 | ||
248 | struct { | |
249 | compat_uptr_t _call_addr; /* calling user insn */ | |
250 | int _syscall; /* triggering system call number */ | |
251 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ | |
252 | } _sigsys; | |
253 | } _sifields; | |
254 | } compat_siginfo_t; | |
255 | ||
1da177e4 LT |
256 | struct compat_rlimit { |
257 | compat_ulong_t rlim_cur; | |
258 | compat_ulong_t rlim_max; | |
259 | }; | |
260 | ||
261 | struct compat_rusage { | |
9afc5eee AB |
262 | struct old_timeval32 ru_utime; |
263 | struct old_timeval32 ru_stime; | |
1da177e4 LT |
264 | compat_long_t ru_maxrss; |
265 | compat_long_t ru_ixrss; | |
266 | compat_long_t ru_idrss; | |
267 | compat_long_t ru_isrss; | |
268 | compat_long_t ru_minflt; | |
269 | compat_long_t ru_majflt; | |
270 | compat_long_t ru_nswap; | |
271 | compat_long_t ru_inblock; | |
272 | compat_long_t ru_oublock; | |
273 | compat_long_t ru_msgsnd; | |
274 | compat_long_t ru_msgrcv; | |
275 | compat_long_t ru_nsignals; | |
276 | compat_long_t ru_nvcsw; | |
277 | compat_long_t ru_nivcsw; | |
278 | }; | |
279 | ||
4800a5bb CM |
280 | extern int put_compat_rusage(const struct rusage *, |
281 | struct compat_rusage __user *); | |
1da177e4 LT |
282 | |
283 | struct compat_siginfo; | |
7a074e96 | 284 | struct __compat_aio_sigset; |
1da177e4 | 285 | |
1da177e4 LT |
286 | struct compat_dirent { |
287 | u32 d_ino; | |
288 | compat_off_t d_off; | |
289 | u16 d_reclen; | |
290 | char d_name[256]; | |
291 | }; | |
292 | ||
2b1c6bd7 CH |
293 | struct compat_ustat { |
294 | compat_daddr_t f_tfree; | |
295 | compat_ino_t f_tinode; | |
296 | char f_fname[6]; | |
297 | char f_fpack[6]; | |
298 | }; | |
299 | ||
1da177e4 LT |
300 | #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) |
301 | ||
302 | typedef struct compat_sigevent { | |
303 | compat_sigval_t sigev_value; | |
304 | compat_int_t sigev_signo; | |
305 | compat_int_t sigev_notify; | |
306 | union { | |
307 | compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; | |
308 | compat_int_t _tid; | |
309 | ||
310 | struct { | |
311 | compat_uptr_t _function; | |
312 | compat_uptr_t _attribute; | |
313 | } _sigev_thread; | |
314 | } _sigev_un; | |
315 | } compat_sigevent_t; | |
316 | ||
2dceba14 AB |
317 | struct compat_ifmap { |
318 | compat_ulong_t mem_start; | |
319 | compat_ulong_t mem_end; | |
320 | unsigned short base_addr; | |
321 | unsigned char irq; | |
322 | unsigned char dma; | |
323 | unsigned char port; | |
324 | }; | |
325 | ||
4800a5bb | 326 | struct compat_if_settings { |
7a50a240 AB |
327 | unsigned int type; /* Type of physical device or protocol */ |
328 | unsigned int size; /* Size of the data allocated by the caller */ | |
329 | compat_uptr_t ifs_ifsu; /* union of pointers */ | |
330 | }; | |
331 | ||
2dceba14 | 332 | struct compat_ifreq { |
7a50a240 AB |
333 | union { |
334 | char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ | |
335 | } ifr_ifrn; | |
336 | union { | |
337 | struct sockaddr ifru_addr; | |
338 | struct sockaddr ifru_dstaddr; | |
339 | struct sockaddr ifru_broadaddr; | |
340 | struct sockaddr ifru_netmask; | |
341 | struct sockaddr ifru_hwaddr; | |
342 | short ifru_flags; | |
343 | compat_int_t ifru_ivalue; | |
344 | compat_int_t ifru_mtu; | |
345 | struct compat_ifmap ifru_map; | |
346 | char ifru_slave[IFNAMSIZ]; /* Just fits the size */ | |
2dceba14 | 347 | char ifru_newname[IFNAMSIZ]; |
7a50a240 AB |
348 | compat_caddr_t ifru_data; |
349 | struct compat_if_settings ifru_settings; | |
350 | } ifr_ifru; | |
2dceba14 AB |
351 | }; |
352 | ||
353 | struct compat_ifconf { | |
4800a5bb CM |
354 | compat_int_t ifc_len; /* size of buffer */ |
355 | compat_caddr_t ifcbuf; | |
2dceba14 AB |
356 | }; |
357 | ||
34f192c6 IM |
358 | struct compat_robust_list { |
359 | compat_uptr_t next; | |
360 | }; | |
361 | ||
362 | struct compat_robust_list_head { | |
363 | struct compat_robust_list list; | |
364 | compat_long_t futex_offset; | |
365 | compat_uptr_t list_op_pending; | |
366 | }; | |
367 | ||
495dfbf7 AV |
368 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
369 | struct compat_old_sigaction { | |
370 | compat_uptr_t sa_handler; | |
371 | compat_old_sigset_t sa_mask; | |
372 | compat_ulong_t sa_flags; | |
373 | compat_uptr_t sa_restorer; | |
374 | }; | |
375 | #endif | |
376 | ||
f1c316a3 SM |
377 | struct compat_keyctl_kdf_params { |
378 | compat_uptr_t hashname; | |
379 | compat_uptr_t otherinfo; | |
380 | __u32 otherinfolen; | |
381 | __u32 __spare[8]; | |
382 | }; | |
383 | ||
1a33b18b | 384 | struct compat_stat; |
be84cb43 CM |
385 | struct compat_statfs; |
386 | struct compat_statfs64; | |
387 | struct compat_old_linux_dirent; | |
388 | struct compat_linux_dirent; | |
389 | struct linux_dirent64; | |
390 | struct compat_msghdr; | |
391 | struct compat_mmsghdr; | |
392 | struct compat_sysinfo; | |
393 | struct compat_sysctl_args; | |
394 | struct compat_kexec_segment; | |
395 | struct compat_mq_attr; | |
48b25c43 | 396 | struct compat_msgbuf; |
be84cb43 | 397 | |
c3b3f524 CH |
398 | void copy_siginfo_to_external32(struct compat_siginfo *to, |
399 | const struct kernel_siginfo *from); | |
400 | int copy_siginfo_from_user32(kernel_siginfo_t *to, | |
401 | const struct compat_siginfo __user *from); | |
402 | int __copy_siginfo_to_user32(struct compat_siginfo __user *to, | |
403 | const kernel_siginfo_t *from); | |
404 | #ifndef copy_siginfo_to_user32 | |
405 | #define copy_siginfo_to_user32 __copy_siginfo_to_user32 | |
406 | #endif | |
1da177e4 LT |
407 | int get_compat_sigevent(struct sigevent *event, |
408 | const struct compat_sigevent __user *u_event); | |
409 | ||
3968cf62 | 410 | extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); |
fde9fc76 MR |
411 | |
412 | /* | |
413 | * Defined inline such that size can be compile time constant, which avoids | |
414 | * CONFIG_HARDENED_USERCOPY complaining about copies from task_struct | |
415 | */ | |
416 | static inline int | |
417 | put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set, | |
418 | unsigned int size) | |
419 | { | |
420 | /* size <= sizeof(compat_sigset_t) <= sizeof(sigset_t) */ | |
1a33b18b | 421 | #if defined(__BIG_ENDIAN) && defined(CONFIG_64BIT) |
fde9fc76 MR |
422 | compat_sigset_t v; |
423 | switch (_NSIG_WORDS) { | |
424 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; | |
df561f66 | 425 | fallthrough; |
fde9fc76 | 426 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; |
df561f66 | 427 | fallthrough; |
fde9fc76 | 428 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; |
df561f66 | 429 | fallthrough; |
fde9fc76 MR |
430 | case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0]; |
431 | } | |
432 | return copy_to_user(compat, &v, size) ? -EFAULT : 0; | |
433 | #else | |
434 | return copy_to_user(compat, set, size) ? -EFAULT : 0; | |
435 | #endif | |
436 | } | |
bebfa101 | 437 | |
14026b94 CL |
438 | #ifdef CONFIG_CPU_BIG_ENDIAN |
439 | #define unsafe_put_compat_sigset(compat, set, label) do { \ | |
440 | compat_sigset_t __user *__c = compat; \ | |
441 | const sigset_t *__s = set; \ | |
442 | \ | |
443 | switch (_NSIG_WORDS) { \ | |
444 | case 4: \ | |
445 | unsafe_put_user(__s->sig[3] >> 32, &__c->sig[7], label); \ | |
446 | unsafe_put_user(__s->sig[3], &__c->sig[6], label); \ | |
447 | fallthrough; \ | |
448 | case 3: \ | |
449 | unsafe_put_user(__s->sig[2] >> 32, &__c->sig[5], label); \ | |
450 | unsafe_put_user(__s->sig[2], &__c->sig[4], label); \ | |
451 | fallthrough; \ | |
452 | case 2: \ | |
453 | unsafe_put_user(__s->sig[1] >> 32, &__c->sig[3], label); \ | |
454 | unsafe_put_user(__s->sig[1], &__c->sig[2], label); \ | |
455 | fallthrough; \ | |
456 | case 1: \ | |
457 | unsafe_put_user(__s->sig[0] >> 32, &__c->sig[1], label); \ | |
458 | unsafe_put_user(__s->sig[0], &__c->sig[0], label); \ | |
459 | } \ | |
460 | } while (0) | |
fb05121f CL |
461 | |
462 | #define unsafe_get_compat_sigset(set, compat, label) do { \ | |
463 | const compat_sigset_t __user *__c = compat; \ | |
464 | compat_sigset_word hi, lo; \ | |
465 | sigset_t *__s = set; \ | |
466 | \ | |
467 | switch (_NSIG_WORDS) { \ | |
468 | case 4: \ | |
469 | unsafe_get_user(lo, &__c->sig[7], label); \ | |
470 | unsafe_get_user(hi, &__c->sig[6], label); \ | |
471 | __s->sig[3] = hi | (((long)lo) << 32); \ | |
472 | fallthrough; \ | |
473 | case 3: \ | |
474 | unsafe_get_user(lo, &__c->sig[5], label); \ | |
475 | unsafe_get_user(hi, &__c->sig[4], label); \ | |
476 | __s->sig[2] = hi | (((long)lo) << 32); \ | |
477 | fallthrough; \ | |
478 | case 2: \ | |
479 | unsafe_get_user(lo, &__c->sig[3], label); \ | |
480 | unsafe_get_user(hi, &__c->sig[2], label); \ | |
481 | __s->sig[1] = hi | (((long)lo) << 32); \ | |
482 | fallthrough; \ | |
483 | case 1: \ | |
484 | unsafe_get_user(lo, &__c->sig[1], label); \ | |
485 | unsafe_get_user(hi, &__c->sig[0], label); \ | |
486 | __s->sig[0] = hi | (((long)lo) << 32); \ | |
487 | } \ | |
488 | } while (0) | |
14026b94 CL |
489 | #else |
490 | #define unsafe_put_compat_sigset(compat, set, label) do { \ | |
491 | compat_sigset_t __user *__c = compat; \ | |
492 | const sigset_t *__s = set; \ | |
493 | \ | |
494 | unsafe_copy_to_user(__c, __s, sizeof(*__c), label); \ | |
495 | } while (0) | |
fb05121f CL |
496 | |
497 | #define unsafe_get_compat_sigset(set, compat, label) do { \ | |
498 | const compat_sigset_t __user *__c = compat; \ | |
499 | sigset_t *__s = set; \ | |
500 | \ | |
501 | unsafe_copy_from_user(__s, __c, sizeof(*__c), label); \ | |
502 | } while (0) | |
14026b94 CL |
503 | #endif |
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 | ||
c679a089 DB |
514 | int compat_restore_altstack(const compat_stack_t __user *uss); |
515 | int __compat_save_altstack(compat_stack_t __user *, unsigned long); | |
39f16c1c | 516 | #define unsafe_compat_save_altstack(uss, sp, label) do { \ |
c679a089 DB |
517 | compat_stack_t __user *__uss = uss; \ |
518 | struct task_struct *t = current; \ | |
39f16c1c AV |
519 | unsafe_put_user(ptr_to_compat((void __user *)t->sas_ss_sp), \ |
520 | &__uss->ss_sp, label); \ | |
521 | unsafe_put_user(t->sas_ss_flags, &__uss->ss_flags, label); \ | |
522 | unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \ | |
c679a089 DB |
523 | } while (0); |
524 | ||
f6dfb4fd | 525 | /* |
c679a089 | 526 | * These syscall function prototypes are kept in the same order as |
3e2052e5 DB |
527 | * include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls |
528 | * go below. | |
c679a089 DB |
529 | * |
530 | * Please note that these prototypes here are only provided for information | |
531 | * purposes, for static analysis, and for linking from the syscall table. | |
532 | * These functions should not be called elsewhere from kernel code. | |
7303e30e DB |
533 | * |
534 | * As the syscall calling convention may be different from the default | |
535 | * for architectures overriding the syscall calling convention, do not | |
536 | * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
f6dfb4fd | 537 | */ |
7303e30e | 538 | #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
c679a089 DB |
539 | asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); |
540 | asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, | |
541 | u32 __user *iocb); | |
7a074e96 CH |
542 | asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id, |
543 | compat_long_t min_nr, | |
544 | compat_long_t nr, | |
545 | struct io_event __user *events, | |
9afc5eee | 546 | struct old_timespec32 __user *timeout, |
7a074e96 | 547 | const struct __compat_aio_sigset __user *usig); |
7a35397f DD |
548 | asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id, |
549 | compat_long_t min_nr, | |
550 | compat_long_t nr, | |
551 | struct io_event __user *events, | |
552 | struct __kernel_timespec __user *timeout, | |
553 | const struct __compat_aio_sigset __user *usig); | |
c679a089 DB |
554 | |
555 | /* fs/cookies.c */ | |
556 | asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); | |
557 | ||
558 | /* fs/eventpoll.c */ | |
f6dfb4fd | 559 | asmlinkage long compat_sys_epoll_pwait(int epfd, |
35280bd4 | 560 | struct epoll_event __user *events, |
f6dfb4fd DL |
561 | int maxevents, int timeout, |
562 | const compat_sigset_t __user *sigmask, | |
563 | compat_size_t sigsetsize); | |
b0a0c261 WB |
564 | asmlinkage long compat_sys_epoll_pwait2(int epfd, |
565 | struct epoll_event __user *events, | |
566 | int maxevents, | |
567 | const struct __kernel_timespec __user *timeout, | |
568 | const compat_sigset_t __user *sigmask, | |
569 | compat_size_t sigsetsize); | |
f6dfb4fd | 570 | |
c679a089 DB |
571 | /* fs/fcntl.c */ |
572 | asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, | |
573 | compat_ulong_t arg); | |
574 | asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, | |
575 | compat_ulong_t arg); | |
97416ce8 | 576 | |
c679a089 DB |
577 | /* fs/ioctl.c */ |
578 | asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, | |
579 | compat_ulong_t arg); | |
140ff8b0 | 580 | |
c679a089 | 581 | /* fs/open.c */ |
be84cb43 CM |
582 | asmlinkage long compat_sys_statfs(const char __user *pathname, |
583 | struct compat_statfs __user *buf); | |
be84cb43 CM |
584 | asmlinkage long compat_sys_statfs64(const char __user *pathname, |
585 | compat_size_t sz, | |
586 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
587 | asmlinkage long compat_sys_fstatfs(unsigned int fd, |
588 | struct compat_statfs __user *buf); | |
be84cb43 CM |
589 | asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, |
590 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
591 | asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); |
592 | asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); | |
593 | /* No generic prototype for truncate64, ftruncate64, fallocate */ | |
594 | asmlinkage long compat_sys_openat(int dfd, const char __user *filename, | |
595 | int flags, umode_t mode); | |
596 | ||
597 | /* fs/readdir.c */ | |
be84cb43 CM |
598 | asmlinkage long compat_sys_getdents(unsigned int fd, |
599 | struct compat_linux_dirent __user *dirent, | |
600 | unsigned int count); | |
c679a089 DB |
601 | |
602 | /* fs/read_write.c */ | |
603 | asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); | |
c679a089 DB |
604 | /* No generic prototype for pread64 and pwrite64 */ |
605 | asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, | |
3523a9d4 | 606 | const struct iovec __user *vec, |
c679a089 DB |
607 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); |
608 | asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, | |
3523a9d4 | 609 | const struct iovec __user *vec, |
c679a089 DB |
610 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); |
611 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 | |
612 | asmlinkage long compat_sys_preadv64(unsigned long fd, | |
3523a9d4 | 613 | const struct iovec __user *vec, |
c679a089 DB |
614 | unsigned long vlen, loff_t pos); |
615 | #endif | |
616 | ||
617 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 | |
618 | asmlinkage long compat_sys_pwritev64(unsigned long fd, | |
3523a9d4 | 619 | const struct iovec __user *vec, |
c679a089 DB |
620 | unsigned long vlen, loff_t pos); |
621 | #endif | |
622 | ||
623 | /* fs/sendfile.c */ | |
624 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
625 | compat_off_t __user *offset, compat_size_t count); | |
626 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
627 | compat_loff_t __user *offset, compat_size_t count); | |
628 | ||
629 | /* fs/select.c */ | |
8dabe724 | 630 | asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp, |
be84cb43 CM |
631 | compat_ulong_t __user *outp, |
632 | compat_ulong_t __user *exp, | |
9afc5eee | 633 | struct old_timespec32 __user *tsp, |
be84cb43 | 634 | void __user *sig); |
e024707b DD |
635 | asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp, |
636 | compat_ulong_t __user *outp, | |
637 | compat_ulong_t __user *exp, | |
638 | struct __kernel_timespec __user *tsp, | |
639 | void __user *sig); | |
8dabe724 | 640 | asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds, |
be84cb43 | 641 | unsigned int nfds, |
9afc5eee | 642 | struct old_timespec32 __user *tsp, |
be84cb43 CM |
643 | const compat_sigset_t __user *sigmask, |
644 | compat_size_t sigsetsize); | |
8bd27a30 DD |
645 | asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds, |
646 | unsigned int nfds, | |
647 | struct __kernel_timespec __user *tsp, | |
648 | const compat_sigset_t __user *sigmask, | |
649 | compat_size_t sigsetsize); | |
c679a089 DB |
650 | |
651 | /* fs/signalfd.c */ | |
be84cb43 CM |
652 | asmlinkage long compat_sys_signalfd4(int ufd, |
653 | const compat_sigset_t __user *sigmask, | |
654 | compat_size_t sigsetsize, int flags); | |
be84cb43 | 655 | |
c679a089 DB |
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 | ||
c679a089 DB |
666 | /* kernel/exit.c */ |
667 | asmlinkage long compat_sys_waitid(int, compat_pid_t, | |
668 | struct compat_siginfo __user *, int, | |
669 | struct compat_rusage __user *); | |
670 | ||
671 | ||
672 | ||
673 | /* kernel/futex.c */ | |
c679a089 DB |
674 | asmlinkage long |
675 | compat_sys_set_robust_list(struct compat_robust_list_head __user *head, | |
676 | compat_size_t len); | |
677 | asmlinkage long | |
678 | compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, | |
679 | compat_size_t __user *len_ptr); | |
680 | ||
c679a089 | 681 | /* kernel/itimer.c */ |
be84cb43 | 682 | asmlinkage long compat_sys_getitimer(int which, |
c1745f84 | 683 | struct old_itimerval32 __user *it); |
be84cb43 | 684 | asmlinkage long compat_sys_setitimer(int which, |
c1745f84 AB |
685 | struct old_itimerval32 __user *in, |
686 | struct old_itimerval32 __user *out); | |
c679a089 DB |
687 | |
688 | /* kernel/kexec.c */ | |
689 | asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, | |
690 | compat_ulong_t nr_segments, | |
691 | struct compat_kexec_segment __user *, | |
692 | compat_ulong_t flags); | |
693 | ||
694 | /* kernel/posix-timers.c */ | |
be84cb43 CM |
695 | asmlinkage long compat_sys_timer_create(clockid_t which_clock, |
696 | struct compat_sigevent __user *timer_event_spec, | |
697 | timer_t __user *created_timer_id); | |
c679a089 DB |
698 | |
699 | /* kernel/ptrace.c */ | |
700 | asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, | |
701 | compat_long_t addr, compat_long_t data); | |
702 | ||
703 | /* kernel/sched/core.c */ | |
704 | asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, | |
705 | unsigned int len, | |
706 | compat_ulong_t __user *user_mask_ptr); | |
707 | asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, | |
708 | unsigned int len, | |
709 | compat_ulong_t __user *user_mask_ptr); | |
c679a089 DB |
710 | |
711 | /* kernel/signal.c */ | |
712 | asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, | |
713 | compat_stack_t __user *uoss_ptr); | |
be84cb43 CM |
714 | asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, |
715 | compat_size_t sigsetsize); | |
08d32fe5 | 716 | #ifndef CONFIG_ODD_RT_SIGACTION |
08d32fe5 AV |
717 | asmlinkage long compat_sys_rt_sigaction(int, |
718 | const struct compat_sigaction __user *, | |
719 | struct compat_sigaction __user *, | |
720 | compat_size_t); | |
721 | #endif | |
c679a089 DB |
722 | asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, |
723 | compat_sigset_t __user *oset, | |
724 | compat_size_t sigsetsize); | |
725 | asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, | |
726 | compat_size_t sigsetsize); | |
8dabe724 | 727 | asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese, |
c679a089 | 728 | struct compat_siginfo __user *uinfo, |
9afc5eee | 729 | struct old_timespec32 __user *uts, compat_size_t sigsetsize); |
2367c4b5 AB |
730 | asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese, |
731 | struct compat_siginfo __user *uinfo, | |
732 | struct __kernel_timespec __user *uts, compat_size_t sigsetsize); | |
75907d4d AV |
733 | asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, |
734 | struct compat_siginfo __user *uinfo); | |
c679a089 DB |
735 | /* No generic prototype for rt_sigreturn */ |
736 | ||
737 | /* kernel/sys.c */ | |
738 | asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); | |
739 | asmlinkage long compat_sys_getrlimit(unsigned int resource, | |
740 | struct compat_rlimit __user *rlim); | |
741 | asmlinkage long compat_sys_setrlimit(unsigned int resource, | |
742 | struct compat_rlimit __user *rlim); | |
743 | asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); | |
744 | ||
745 | /* kernel/time.c */ | |
9afc5eee | 746 | asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv, |
c679a089 | 747 | struct timezone __user *tz); |
9afc5eee | 748 | asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv, |
c679a089 | 749 | struct timezone __user *tz); |
c679a089 DB |
750 | |
751 | /* kernel/timer.c */ | |
be84cb43 | 752 | asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); |
c679a089 DB |
753 | |
754 | /* ipc/mqueue.c */ | |
be84cb43 CM |
755 | asmlinkage long compat_sys_mq_open(const char __user *u_name, |
756 | int oflag, compat_mode_t mode, | |
757 | struct compat_mq_attr __user *u_attr); | |
c679a089 DB |
758 | asmlinkage long compat_sys_mq_notify(mqd_t mqdes, |
759 | const struct compat_sigevent __user *u_notification); | |
760 | asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, | |
761 | const struct compat_mq_attr __user *u_mqstat, | |
762 | struct compat_mq_attr __user *u_omqstat); | |
4c696ba7 | 763 | |
c679a089 DB |
764 | /* ipc/msg.c */ |
765 | asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); | |
766 | asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, | |
767 | compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); | |
768 | asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, | |
769 | compat_ssize_t msgsz, int msgflg); | |
c41d68a5 | 770 | |
c679a089 DB |
771 | /* ipc/sem.c */ |
772 | asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); | |
c679a089 DB |
773 | |
774 | /* ipc/shm.c */ | |
775 | asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); | |
776 | asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); | |
777 | ||
778 | /* net/socket.c */ | |
779 | asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, | |
780 | unsigned flags, struct sockaddr __user *addr, | |
781 | int __user *addrlen); | |
c679a089 DB |
782 | asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, |
783 | unsigned flags); | |
784 | asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, | |
785 | unsigned int flags); | |
786 | ||
787 | /* mm/filemap.c: No generic prototype for readahead */ | |
c41d68a5 | 788 | |
c679a089 DB |
789 | /* security/keys/keyctl.c */ |
790 | asmlinkage long compat_sys_keyctl(u32 option, | |
791 | u32 arg2, u32 arg3, u32 arg4, u32 arg5); | |
792 | ||
793 | /* arch/example/kernel/sys_example.c */ | |
794 | asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, | |
795 | const compat_uptr_t __user *envp); | |
796 | ||
797 | /* mm/fadvise.c: No generic prototype for fadvise64_64 */ | |
798 | ||
799 | /* mm/, CONFIG_MMU only */ | |
c679a089 DB |
800 | asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, |
801 | compat_pid_t pid, int sig, | |
802 | struct compat_siginfo __user *uinfo); | |
e11d4284 AB |
803 | asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg, |
804 | unsigned vlen, unsigned int flags, | |
805 | struct __kernel_timespec __user *timeout); | |
8dabe724 | 806 | asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg, |
c679a089 | 807 | unsigned vlen, unsigned int flags, |
9afc5eee | 808 | struct old_timespec32 __user *timeout); |
c679a089 DB |
809 | asmlinkage long compat_sys_wait4(compat_pid_t pid, |
810 | compat_uint_t __user *stat_addr, int options, | |
811 | struct compat_rusage __user *ru); | |
812 | asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, | |
813 | int, const char __user *); | |
814 | asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, | |
815 | struct file_handle __user *handle, | |
816 | int flags); | |
c679a089 DB |
817 | asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, |
818 | unsigned vlen, unsigned int flags); | |
c679a089 DB |
819 | asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, |
820 | const compat_uptr_t __user *argv, | |
821 | const compat_uptr_t __user *envp, int flags); | |
822 | asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, | |
3523a9d4 | 823 | const struct iovec __user *vec, |
c679a089 DB |
824 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); |
825 | asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, | |
3523a9d4 | 826 | const struct iovec __user *vec, |
c679a089 DB |
827 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); |
828 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 | |
576d0703 | 829 | asmlinkage long compat_sys_preadv64v2(unsigned long fd, |
3523a9d4 | 830 | const struct iovec __user *vec, |
c679a089 DB |
831 | unsigned long vlen, loff_t pos, rwf_t flags); |
832 | #endif | |
a67ba43d | 833 | |
c679a089 DB |
834 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 |
835 | asmlinkage long compat_sys_pwritev64v2(unsigned long fd, | |
3523a9d4 | 836 | const struct iovec __user *vec, |
c679a089 DB |
837 | unsigned long vlen, loff_t pos, rwf_t flags); |
838 | #endif | |
839 | ||
840 | ||
c679a089 DB |
841 | /* |
842 | * Deprecated system calls which are still defined in | |
843 | * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch | |
844 | */ | |
845 | ||
846 | /* __ARCH_WANT_SYSCALL_NO_AT */ | |
847 | asmlinkage long compat_sys_open(const char __user *filename, int flags, | |
848 | umode_t mode); | |
c679a089 DB |
849 | |
850 | /* __ARCH_WANT_SYSCALL_NO_FLAGS */ | |
851 | asmlinkage long compat_sys_signalfd(int ufd, | |
852 | const compat_sigset_t __user *sigmask, | |
853 | compat_size_t sigsetsize); | |
854 | ||
855 | /* __ARCH_WANT_SYSCALL_OFF_T */ | |
856 | asmlinkage long compat_sys_newstat(const char __user *filename, | |
857 | struct compat_stat __user *statbuf); | |
858 | asmlinkage long compat_sys_newlstat(const char __user *filename, | |
859 | struct compat_stat __user *statbuf); | |
860 | ||
861 | /* __ARCH_WANT_SYSCALL_DEPRECATED */ | |
c679a089 DB |
862 | asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, |
863 | compat_ulong_t __user *outp, compat_ulong_t __user *exp, | |
9afc5eee | 864 | struct old_timeval32 __user *tvp); |
c679a089 DB |
865 | asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); |
866 | asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, | |
867 | unsigned flags); | |
c679a089 DB |
868 | |
869 | /* obsolete: fs/readdir.c */ | |
870 | asmlinkage long compat_sys_old_readdir(unsigned int fd, | |
871 | struct compat_old_linux_dirent __user *, | |
872 | unsigned int count); | |
873 | ||
874 | /* obsolete: fs/select.c */ | |
875 | asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); | |
876 | ||
877 | /* obsolete: ipc */ | |
878 | asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); | |
90268439 | 879 | |
c679a089 | 880 | /* obsolete: kernel/signal.c */ |
e9fb8b7e CM |
881 | #ifdef __ARCH_WANT_SYS_SIGPENDING |
882 | asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); | |
883 | #endif | |
884 | ||
885 | #ifdef __ARCH_WANT_SYS_SIGPROCMASK | |
886 | asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, | |
887 | compat_old_sigset_t __user *oset); | |
888 | #endif | |
c679a089 DB |
889 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
890 | asmlinkage long compat_sys_sigaction(int sig, | |
891 | const struct compat_old_sigaction __user *act, | |
892 | struct compat_old_sigaction __user *oact); | |
893 | #endif | |
e9fb8b7e | 894 | |
c679a089 DB |
895 | /* obsolete: net/socket.c */ |
896 | asmlinkage long compat_sys_socketcall(int call, u32 __user *args); | |
5180e3e2 | 897 | |
7303e30e DB |
898 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ |
899 | ||
cd19c364 | 900 | /** |
9afc5eee | 901 | * ns_to_old_timeval32 - Compat version of ns_to_timeval |
cd19c364 FW |
902 | * @nsec: the nanoseconds value to be converted |
903 | * | |
9afc5eee | 904 | * Returns the old_timeval32 representation of the nsec parameter. |
cd19c364 | 905 | */ |
9afc5eee | 906 | static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec) |
cd19c364 | 907 | { |
693737b6 | 908 | struct __kernel_old_timeval tv; |
9afc5eee | 909 | struct old_timeval32 ctv; |
cd19c364 | 910 | |
693737b6 | 911 | tv = ns_to_kernel_old_timeval(nsec); |
cd19c364 FW |
912 | ctv.tv_sec = tv.tv_sec; |
913 | ctv.tv_usec = tv.tv_usec; | |
914 | ||
915 | return ctv; | |
916 | } | |
917 | ||
9b54bf9d MR |
918 | /* |
919 | * Kernel code should not call compat syscalls (i.e., compat_sys_xyzyyz()) | |
920 | * directly. Instead, use one of the functions which work equivalently, such | |
921 | * as the kcompat_sys_xyzyyz() functions prototyped below. | |
922 | */ | |
923 | ||
924 | int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz, | |
925 | struct compat_statfs64 __user * buf); | |
926 | int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz, | |
927 | struct compat_statfs64 __user * buf); | |
928 | ||
1a33b18b AB |
929 | #ifdef CONFIG_COMPAT |
930 | ||
931 | /* | |
932 | * For most but not all architectures, "am I in a compat syscall?" and | |
933 | * "am I a compat task?" are the same question. For architectures on which | |
934 | * they aren't the same question, arch code can override in_compat_syscall. | |
935 | */ | |
936 | #ifndef in_compat_syscall | |
937 | static inline bool in_compat_syscall(void) { return is_compat_task(); } | |
938 | #endif | |
939 | ||
cd19c364 | 940 | #else /* !CONFIG_COMPAT */ |
3c761ea0 LT |
941 | |
942 | #define is_compat_task() (0) | |
a846446b DS |
943 | /* Ensure no one redefines in_compat_syscall() under !CONFIG_COMPAT */ |
944 | #define in_compat_syscall in_compat_syscall | |
5180e3e2 | 945 | static inline bool in_compat_syscall(void) { return false; } |
3c761ea0 | 946 | |
1da177e4 | 947 | #endif /* CONFIG_COMPAT */ |
5180e3e2 | 948 | |
e130242d AB |
949 | #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) |
950 | ||
951 | #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) | |
952 | ||
953 | long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, | |
954 | unsigned long bitmap_size); | |
955 | long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, | |
956 | unsigned long bitmap_size); | |
957 | ||
527c4125 CH |
958 | /* |
959 | * Some legacy ABIs like the i386 one use less than natural alignment for 64-bit | |
960 | * types, and will need special compat treatment for that. Most architectures | |
961 | * don't need that special handling even for compat syscalls. | |
962 | */ | |
963 | #ifndef compat_need_64bit_alignment_fixup | |
964 | #define compat_need_64bit_alignment_fixup() false | |
965 | #endif | |
966 | ||
202bf8d7 AB |
967 | /* |
968 | * A pointer passed in from user mode. This should not | |
969 | * be used for syscall parameters, just declare them | |
970 | * as pointers because the syscall entry code will have | |
971 | * appropriately converted them already. | |
972 | */ | |
973 | #ifndef compat_ptr | |
974 | static inline void __user *compat_ptr(compat_uptr_t uptr) | |
975 | { | |
976 | return (void __user *)(unsigned long)uptr; | |
977 | } | |
978 | #endif | |
979 | ||
980 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) | |
981 | { | |
982 | return (u32)(unsigned long)uptr; | |
983 | } | |
984 | ||
1da177e4 | 985 | #endif /* _LINUX_COMPAT_H */ |