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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 | 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; | |
78ed93d7 | 238 | u32 _flags; |
0683b531 | 239 | } _perf; |
b713da69 AV |
240 | }; |
241 | } _sigfault; | |
242 | ||
243 | /* SIGPOLL */ | |
244 | struct { | |
245 | compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
246 | int _fd; | |
247 | } _sigpoll; | |
248 | ||
249 | struct { | |
250 | compat_uptr_t _call_addr; /* calling user insn */ | |
251 | int _syscall; /* triggering system call number */ | |
252 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ | |
253 | } _sigsys; | |
254 | } _sifields; | |
255 | } compat_siginfo_t; | |
256 | ||
1da177e4 LT |
257 | struct compat_rlimit { |
258 | compat_ulong_t rlim_cur; | |
259 | compat_ulong_t rlim_max; | |
260 | }; | |
261 | ||
3ce0f237 CH |
262 | #ifdef __ARCH_NEED_COMPAT_FLOCK64_PACKED |
263 | #define __ARCH_COMPAT_FLOCK64_PACK __attribute__((packed)) | |
264 | #else | |
265 | #define __ARCH_COMPAT_FLOCK64_PACK | |
266 | #endif | |
267 | ||
268 | struct compat_flock { | |
269 | short l_type; | |
270 | short l_whence; | |
271 | compat_off_t l_start; | |
272 | compat_off_t l_len; | |
273 | #ifdef __ARCH_COMPAT_FLOCK_EXTRA_SYSID | |
274 | __ARCH_COMPAT_FLOCK_EXTRA_SYSID | |
275 | #endif | |
276 | compat_pid_t l_pid; | |
277 | #ifdef __ARCH_COMPAT_FLOCK_PAD | |
278 | __ARCH_COMPAT_FLOCK_PAD | |
279 | #endif | |
280 | }; | |
281 | ||
282 | struct compat_flock64 { | |
283 | short l_type; | |
284 | short l_whence; | |
285 | compat_loff_t l_start; | |
286 | compat_loff_t l_len; | |
287 | compat_pid_t l_pid; | |
288 | #ifdef __ARCH_COMPAT_FLOCK64_PAD | |
289 | __ARCH_COMPAT_FLOCK64_PAD | |
290 | #endif | |
291 | } __ARCH_COMPAT_FLOCK64_PACK; | |
292 | ||
1da177e4 | 293 | struct compat_rusage { |
9afc5eee AB |
294 | struct old_timeval32 ru_utime; |
295 | struct old_timeval32 ru_stime; | |
1da177e4 LT |
296 | compat_long_t ru_maxrss; |
297 | compat_long_t ru_ixrss; | |
298 | compat_long_t ru_idrss; | |
299 | compat_long_t ru_isrss; | |
300 | compat_long_t ru_minflt; | |
301 | compat_long_t ru_majflt; | |
302 | compat_long_t ru_nswap; | |
303 | compat_long_t ru_inblock; | |
304 | compat_long_t ru_oublock; | |
305 | compat_long_t ru_msgsnd; | |
306 | compat_long_t ru_msgrcv; | |
307 | compat_long_t ru_nsignals; | |
308 | compat_long_t ru_nvcsw; | |
309 | compat_long_t ru_nivcsw; | |
310 | }; | |
311 | ||
4800a5bb CM |
312 | extern int put_compat_rusage(const struct rusage *, |
313 | struct compat_rusage __user *); | |
1da177e4 LT |
314 | |
315 | struct compat_siginfo; | |
7a074e96 | 316 | struct __compat_aio_sigset; |
1da177e4 | 317 | |
1da177e4 LT |
318 | struct compat_dirent { |
319 | u32 d_ino; | |
320 | compat_off_t d_off; | |
321 | u16 d_reclen; | |
322 | char d_name[256]; | |
323 | }; | |
324 | ||
2b1c6bd7 CH |
325 | struct compat_ustat { |
326 | compat_daddr_t f_tfree; | |
327 | compat_ino_t f_tinode; | |
328 | char f_fname[6]; | |
329 | char f_fpack[6]; | |
330 | }; | |
331 | ||
1da177e4 LT |
332 | #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) |
333 | ||
334 | typedef struct compat_sigevent { | |
335 | compat_sigval_t sigev_value; | |
336 | compat_int_t sigev_signo; | |
337 | compat_int_t sigev_notify; | |
338 | union { | |
339 | compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; | |
340 | compat_int_t _tid; | |
341 | ||
342 | struct { | |
343 | compat_uptr_t _function; | |
344 | compat_uptr_t _attribute; | |
345 | } _sigev_thread; | |
346 | } _sigev_un; | |
347 | } compat_sigevent_t; | |
348 | ||
2dceba14 AB |
349 | struct compat_ifmap { |
350 | compat_ulong_t mem_start; | |
351 | compat_ulong_t mem_end; | |
352 | unsigned short base_addr; | |
353 | unsigned char irq; | |
354 | unsigned char dma; | |
355 | unsigned char port; | |
356 | }; | |
357 | ||
4800a5bb | 358 | struct compat_if_settings { |
7a50a240 AB |
359 | unsigned int type; /* Type of physical device or protocol */ |
360 | unsigned int size; /* Size of the data allocated by the caller */ | |
361 | compat_uptr_t ifs_ifsu; /* union of pointers */ | |
362 | }; | |
363 | ||
2dceba14 | 364 | struct compat_ifreq { |
7a50a240 AB |
365 | union { |
366 | char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ | |
367 | } ifr_ifrn; | |
368 | union { | |
369 | struct sockaddr ifru_addr; | |
370 | struct sockaddr ifru_dstaddr; | |
371 | struct sockaddr ifru_broadaddr; | |
372 | struct sockaddr ifru_netmask; | |
373 | struct sockaddr ifru_hwaddr; | |
374 | short ifru_flags; | |
375 | compat_int_t ifru_ivalue; | |
376 | compat_int_t ifru_mtu; | |
377 | struct compat_ifmap ifru_map; | |
378 | char ifru_slave[IFNAMSIZ]; /* Just fits the size */ | |
2dceba14 | 379 | char ifru_newname[IFNAMSIZ]; |
7a50a240 AB |
380 | compat_caddr_t ifru_data; |
381 | struct compat_if_settings ifru_settings; | |
382 | } ifr_ifru; | |
2dceba14 AB |
383 | }; |
384 | ||
385 | struct compat_ifconf { | |
4800a5bb CM |
386 | compat_int_t ifc_len; /* size of buffer */ |
387 | compat_caddr_t ifcbuf; | |
2dceba14 AB |
388 | }; |
389 | ||
34f192c6 IM |
390 | struct compat_robust_list { |
391 | compat_uptr_t next; | |
392 | }; | |
393 | ||
394 | struct compat_robust_list_head { | |
395 | struct compat_robust_list list; | |
396 | compat_long_t futex_offset; | |
397 | compat_uptr_t list_op_pending; | |
398 | }; | |
399 | ||
495dfbf7 AV |
400 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
401 | struct compat_old_sigaction { | |
402 | compat_uptr_t sa_handler; | |
403 | compat_old_sigset_t sa_mask; | |
404 | compat_ulong_t sa_flags; | |
405 | compat_uptr_t sa_restorer; | |
406 | }; | |
407 | #endif | |
408 | ||
f1c316a3 SM |
409 | struct compat_keyctl_kdf_params { |
410 | compat_uptr_t hashname; | |
411 | compat_uptr_t otherinfo; | |
412 | __u32 otherinfolen; | |
413 | __u32 __spare[8]; | |
414 | }; | |
415 | ||
1a33b18b | 416 | struct compat_stat; |
be84cb43 CM |
417 | struct compat_statfs; |
418 | struct compat_statfs64; | |
419 | struct compat_old_linux_dirent; | |
420 | struct compat_linux_dirent; | |
421 | struct linux_dirent64; | |
422 | struct compat_msghdr; | |
423 | struct compat_mmsghdr; | |
424 | struct compat_sysinfo; | |
425 | struct compat_sysctl_args; | |
426 | struct compat_kexec_segment; | |
427 | struct compat_mq_attr; | |
48b25c43 | 428 | struct compat_msgbuf; |
be84cb43 | 429 | |
c3b3f524 CH |
430 | void copy_siginfo_to_external32(struct compat_siginfo *to, |
431 | const struct kernel_siginfo *from); | |
432 | int copy_siginfo_from_user32(kernel_siginfo_t *to, | |
433 | const struct compat_siginfo __user *from); | |
434 | int __copy_siginfo_to_user32(struct compat_siginfo __user *to, | |
435 | const kernel_siginfo_t *from); | |
436 | #ifndef copy_siginfo_to_user32 | |
437 | #define copy_siginfo_to_user32 __copy_siginfo_to_user32 | |
438 | #endif | |
1da177e4 LT |
439 | int get_compat_sigevent(struct sigevent *event, |
440 | const struct compat_sigevent __user *u_event); | |
441 | ||
3968cf62 | 442 | extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); |
fde9fc76 MR |
443 | |
444 | /* | |
445 | * Defined inline such that size can be compile time constant, which avoids | |
446 | * CONFIG_HARDENED_USERCOPY complaining about copies from task_struct | |
447 | */ | |
448 | static inline int | |
449 | put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set, | |
450 | unsigned int size) | |
451 | { | |
452 | /* size <= sizeof(compat_sigset_t) <= sizeof(sigset_t) */ | |
1a33b18b | 453 | #if defined(__BIG_ENDIAN) && defined(CONFIG_64BIT) |
fde9fc76 MR |
454 | compat_sigset_t v; |
455 | switch (_NSIG_WORDS) { | |
456 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; | |
df561f66 | 457 | fallthrough; |
fde9fc76 | 458 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; |
df561f66 | 459 | fallthrough; |
fde9fc76 | 460 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; |
df561f66 | 461 | fallthrough; |
fde9fc76 MR |
462 | case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0]; |
463 | } | |
464 | return copy_to_user(compat, &v, size) ? -EFAULT : 0; | |
465 | #else | |
466 | return copy_to_user(compat, set, size) ? -EFAULT : 0; | |
467 | #endif | |
468 | } | |
bebfa101 | 469 | |
14026b94 CL |
470 | #ifdef CONFIG_CPU_BIG_ENDIAN |
471 | #define unsafe_put_compat_sigset(compat, set, label) do { \ | |
472 | compat_sigset_t __user *__c = compat; \ | |
473 | const sigset_t *__s = set; \ | |
474 | \ | |
475 | switch (_NSIG_WORDS) { \ | |
476 | case 4: \ | |
477 | unsafe_put_user(__s->sig[3] >> 32, &__c->sig[7], label); \ | |
478 | unsafe_put_user(__s->sig[3], &__c->sig[6], label); \ | |
479 | fallthrough; \ | |
480 | case 3: \ | |
481 | unsafe_put_user(__s->sig[2] >> 32, &__c->sig[5], label); \ | |
482 | unsafe_put_user(__s->sig[2], &__c->sig[4], label); \ | |
483 | fallthrough; \ | |
484 | case 2: \ | |
485 | unsafe_put_user(__s->sig[1] >> 32, &__c->sig[3], label); \ | |
486 | unsafe_put_user(__s->sig[1], &__c->sig[2], label); \ | |
487 | fallthrough; \ | |
488 | case 1: \ | |
489 | unsafe_put_user(__s->sig[0] >> 32, &__c->sig[1], label); \ | |
490 | unsafe_put_user(__s->sig[0], &__c->sig[0], label); \ | |
491 | } \ | |
492 | } while (0) | |
fb05121f CL |
493 | |
494 | #define unsafe_get_compat_sigset(set, compat, label) do { \ | |
495 | const compat_sigset_t __user *__c = compat; \ | |
496 | compat_sigset_word hi, lo; \ | |
497 | sigset_t *__s = set; \ | |
498 | \ | |
499 | switch (_NSIG_WORDS) { \ | |
500 | case 4: \ | |
501 | unsafe_get_user(lo, &__c->sig[7], label); \ | |
502 | unsafe_get_user(hi, &__c->sig[6], label); \ | |
503 | __s->sig[3] = hi | (((long)lo) << 32); \ | |
504 | fallthrough; \ | |
505 | case 3: \ | |
506 | unsafe_get_user(lo, &__c->sig[5], label); \ | |
507 | unsafe_get_user(hi, &__c->sig[4], label); \ | |
508 | __s->sig[2] = hi | (((long)lo) << 32); \ | |
509 | fallthrough; \ | |
510 | case 2: \ | |
511 | unsafe_get_user(lo, &__c->sig[3], label); \ | |
512 | unsafe_get_user(hi, &__c->sig[2], label); \ | |
513 | __s->sig[1] = hi | (((long)lo) << 32); \ | |
514 | fallthrough; \ | |
515 | case 1: \ | |
516 | unsafe_get_user(lo, &__c->sig[1], label); \ | |
517 | unsafe_get_user(hi, &__c->sig[0], label); \ | |
518 | __s->sig[0] = hi | (((long)lo) << 32); \ | |
519 | } \ | |
520 | } while (0) | |
14026b94 CL |
521 | #else |
522 | #define unsafe_put_compat_sigset(compat, set, label) do { \ | |
523 | compat_sigset_t __user *__c = compat; \ | |
524 | const sigset_t *__s = set; \ | |
525 | \ | |
526 | unsafe_copy_to_user(__c, __s, sizeof(*__c), label); \ | |
527 | } while (0) | |
fb05121f CL |
528 | |
529 | #define unsafe_get_compat_sigset(set, compat, label) do { \ | |
530 | const compat_sigset_t __user *__c = compat; \ | |
531 | sigset_t *__s = set; \ | |
532 | \ | |
533 | unsafe_copy_from_user(__s, __c, sizeof(*__c), label); \ | |
534 | } while (0) | |
14026b94 CL |
535 | #endif |
536 | ||
032d82d9 RM |
537 | extern int compat_ptrace_request(struct task_struct *child, |
538 | compat_long_t request, | |
539 | compat_ulong_t addr, compat_ulong_t data); | |
540 | ||
c269f196 RM |
541 | extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, |
542 | compat_ulong_t addr, compat_ulong_t data); | |
c269f196 | 543 | |
c679a089 DB |
544 | struct epoll_event; /* fortunately, this one is fixed-layout */ |
545 | ||
c679a089 DB |
546 | int compat_restore_altstack(const compat_stack_t __user *uss); |
547 | int __compat_save_altstack(compat_stack_t __user *, unsigned long); | |
39f16c1c | 548 | #define unsafe_compat_save_altstack(uss, sp, label) do { \ |
c679a089 DB |
549 | compat_stack_t __user *__uss = uss; \ |
550 | struct task_struct *t = current; \ | |
39f16c1c AV |
551 | unsafe_put_user(ptr_to_compat((void __user *)t->sas_ss_sp), \ |
552 | &__uss->ss_sp, label); \ | |
553 | unsafe_put_user(t->sas_ss_flags, &__uss->ss_flags, label); \ | |
554 | unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \ | |
c679a089 DB |
555 | } while (0); |
556 | ||
f6dfb4fd | 557 | /* |
c679a089 | 558 | * These syscall function prototypes are kept in the same order as |
3e2052e5 DB |
559 | * include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls |
560 | * go below. | |
c679a089 DB |
561 | * |
562 | * Please note that these prototypes here are only provided for information | |
563 | * purposes, for static analysis, and for linking from the syscall table. | |
564 | * These functions should not be called elsewhere from kernel code. | |
7303e30e DB |
565 | * |
566 | * As the syscall calling convention may be different from the default | |
567 | * for architectures overriding the syscall calling convention, do not | |
568 | * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. | |
f6dfb4fd | 569 | */ |
7303e30e | 570 | #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
c679a089 DB |
571 | asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); |
572 | asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, | |
573 | u32 __user *iocb); | |
7a074e96 CH |
574 | asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id, |
575 | compat_long_t min_nr, | |
576 | compat_long_t nr, | |
577 | struct io_event __user *events, | |
9afc5eee | 578 | struct old_timespec32 __user *timeout, |
7a074e96 | 579 | const struct __compat_aio_sigset __user *usig); |
7a35397f DD |
580 | asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id, |
581 | compat_long_t min_nr, | |
582 | compat_long_t nr, | |
583 | struct io_event __user *events, | |
584 | struct __kernel_timespec __user *timeout, | |
585 | const struct __compat_aio_sigset __user *usig); | |
c679a089 DB |
586 | |
587 | /* fs/cookies.c */ | |
588 | asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); | |
589 | ||
590 | /* fs/eventpoll.c */ | |
f6dfb4fd | 591 | asmlinkage long compat_sys_epoll_pwait(int epfd, |
35280bd4 | 592 | struct epoll_event __user *events, |
f6dfb4fd DL |
593 | int maxevents, int timeout, |
594 | const compat_sigset_t __user *sigmask, | |
595 | compat_size_t sigsetsize); | |
b0a0c261 WB |
596 | asmlinkage long compat_sys_epoll_pwait2(int epfd, |
597 | struct epoll_event __user *events, | |
598 | int maxevents, | |
599 | const struct __kernel_timespec __user *timeout, | |
600 | const compat_sigset_t __user *sigmask, | |
601 | compat_size_t sigsetsize); | |
f6dfb4fd | 602 | |
c679a089 DB |
603 | /* fs/fcntl.c */ |
604 | asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, | |
605 | compat_ulong_t arg); | |
606 | asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, | |
607 | compat_ulong_t arg); | |
97416ce8 | 608 | |
c679a089 DB |
609 | /* fs/ioctl.c */ |
610 | asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, | |
611 | compat_ulong_t arg); | |
140ff8b0 | 612 | |
c679a089 | 613 | /* fs/open.c */ |
be84cb43 CM |
614 | asmlinkage long compat_sys_statfs(const char __user *pathname, |
615 | struct compat_statfs __user *buf); | |
be84cb43 CM |
616 | asmlinkage long compat_sys_statfs64(const char __user *pathname, |
617 | compat_size_t sz, | |
618 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
619 | asmlinkage long compat_sys_fstatfs(unsigned int fd, |
620 | struct compat_statfs __user *buf); | |
be84cb43 CM |
621 | asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, |
622 | struct compat_statfs64 __user *buf); | |
c679a089 DB |
623 | asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); |
624 | asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); | |
625 | /* No generic prototype for truncate64, ftruncate64, fallocate */ | |
626 | asmlinkage long compat_sys_openat(int dfd, const char __user *filename, | |
627 | int flags, umode_t mode); | |
628 | ||
629 | /* fs/readdir.c */ | |
be84cb43 CM |
630 | asmlinkage long compat_sys_getdents(unsigned int fd, |
631 | struct compat_linux_dirent __user *dirent, | |
632 | unsigned int count); | |
c679a089 DB |
633 | |
634 | /* fs/read_write.c */ | |
635 | asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); | |
c679a089 DB |
636 | /* No generic prototype for pread64 and pwrite64 */ |
637 | asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, | |
3523a9d4 | 638 | const struct iovec __user *vec, |
c679a089 DB |
639 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); |
640 | asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, | |
3523a9d4 | 641 | const struct iovec __user *vec, |
c679a089 DB |
642 | compat_ulong_t vlen, u32 pos_low, u32 pos_high); |
643 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 | |
644 | asmlinkage long compat_sys_preadv64(unsigned long fd, | |
3523a9d4 | 645 | const struct iovec __user *vec, |
c679a089 DB |
646 | unsigned long vlen, loff_t pos); |
647 | #endif | |
648 | ||
649 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 | |
650 | asmlinkage long compat_sys_pwritev64(unsigned long fd, | |
3523a9d4 | 651 | const struct iovec __user *vec, |
c679a089 DB |
652 | unsigned long vlen, loff_t pos); |
653 | #endif | |
654 | ||
655 | /* fs/sendfile.c */ | |
656 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
657 | compat_off_t __user *offset, compat_size_t count); | |
658 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
659 | compat_loff_t __user *offset, compat_size_t count); | |
660 | ||
661 | /* fs/select.c */ | |
8dabe724 | 662 | asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp, |
be84cb43 CM |
663 | compat_ulong_t __user *outp, |
664 | compat_ulong_t __user *exp, | |
9afc5eee | 665 | struct old_timespec32 __user *tsp, |
be84cb43 | 666 | void __user *sig); |
e024707b DD |
667 | asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp, |
668 | compat_ulong_t __user *outp, | |
669 | compat_ulong_t __user *exp, | |
670 | struct __kernel_timespec __user *tsp, | |
671 | void __user *sig); | |
8dabe724 | 672 | asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds, |
be84cb43 | 673 | unsigned int nfds, |
9afc5eee | 674 | struct old_timespec32 __user *tsp, |
be84cb43 CM |
675 | const compat_sigset_t __user *sigmask, |
676 | compat_size_t sigsetsize); | |
8bd27a30 DD |
677 | asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds, |
678 | unsigned int nfds, | |
679 | struct __kernel_timespec __user *tsp, | |
680 | const compat_sigset_t __user *sigmask, | |
681 | compat_size_t sigsetsize); | |
c679a089 DB |
682 | |
683 | /* fs/signalfd.c */ | |
be84cb43 CM |
684 | asmlinkage long compat_sys_signalfd4(int ufd, |
685 | const compat_sigset_t __user *sigmask, | |
686 | compat_size_t sigsetsize, int flags); | |
be84cb43 | 687 | |
c679a089 DB |
688 | /* fs/stat.c */ |
689 | asmlinkage long compat_sys_newfstatat(unsigned int dfd, | |
690 | const char __user *filename, | |
691 | struct compat_stat __user *statbuf, | |
692 | int flag); | |
693 | asmlinkage long compat_sys_newfstat(unsigned int fd, | |
694 | struct compat_stat __user *statbuf); | |
695 | ||
696 | /* fs/sync.c: No generic prototype for sync_file_range and sync_file_range2 */ | |
697 | ||
c679a089 DB |
698 | /* kernel/exit.c */ |
699 | asmlinkage long compat_sys_waitid(int, compat_pid_t, | |
700 | struct compat_siginfo __user *, int, | |
701 | struct compat_rusage __user *); | |
702 | ||
703 | ||
704 | ||
705 | /* kernel/futex.c */ | |
c679a089 DB |
706 | asmlinkage long |
707 | compat_sys_set_robust_list(struct compat_robust_list_head __user *head, | |
708 | compat_size_t len); | |
709 | asmlinkage long | |
710 | compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, | |
711 | compat_size_t __user *len_ptr); | |
712 | ||
c679a089 | 713 | /* kernel/itimer.c */ |
be84cb43 | 714 | asmlinkage long compat_sys_getitimer(int which, |
c1745f84 | 715 | struct old_itimerval32 __user *it); |
be84cb43 | 716 | asmlinkage long compat_sys_setitimer(int which, |
c1745f84 AB |
717 | struct old_itimerval32 __user *in, |
718 | struct old_itimerval32 __user *out); | |
c679a089 DB |
719 | |
720 | /* kernel/kexec.c */ | |
721 | asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, | |
722 | compat_ulong_t nr_segments, | |
723 | struct compat_kexec_segment __user *, | |
724 | compat_ulong_t flags); | |
725 | ||
726 | /* kernel/posix-timers.c */ | |
be84cb43 CM |
727 | asmlinkage long compat_sys_timer_create(clockid_t which_clock, |
728 | struct compat_sigevent __user *timer_event_spec, | |
729 | timer_t __user *created_timer_id); | |
c679a089 DB |
730 | |
731 | /* kernel/ptrace.c */ | |
732 | asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, | |
733 | compat_long_t addr, compat_long_t data); | |
734 | ||
735 | /* kernel/sched/core.c */ | |
736 | asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, | |
737 | unsigned int len, | |
738 | compat_ulong_t __user *user_mask_ptr); | |
739 | asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, | |
740 | unsigned int len, | |
741 | compat_ulong_t __user *user_mask_ptr); | |
c679a089 DB |
742 | |
743 | /* kernel/signal.c */ | |
744 | asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, | |
745 | compat_stack_t __user *uoss_ptr); | |
be84cb43 CM |
746 | asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, |
747 | compat_size_t sigsetsize); | |
08d32fe5 | 748 | #ifndef CONFIG_ODD_RT_SIGACTION |
08d32fe5 AV |
749 | asmlinkage long compat_sys_rt_sigaction(int, |
750 | const struct compat_sigaction __user *, | |
751 | struct compat_sigaction __user *, | |
752 | compat_size_t); | |
753 | #endif | |
c679a089 DB |
754 | asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, |
755 | compat_sigset_t __user *oset, | |
756 | compat_size_t sigsetsize); | |
757 | asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, | |
758 | compat_size_t sigsetsize); | |
8dabe724 | 759 | asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese, |
c679a089 | 760 | struct compat_siginfo __user *uinfo, |
9afc5eee | 761 | struct old_timespec32 __user *uts, compat_size_t sigsetsize); |
2367c4b5 AB |
762 | asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese, |
763 | struct compat_siginfo __user *uinfo, | |
764 | struct __kernel_timespec __user *uts, compat_size_t sigsetsize); | |
75907d4d AV |
765 | asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, |
766 | struct compat_siginfo __user *uinfo); | |
c679a089 DB |
767 | /* No generic prototype for rt_sigreturn */ |
768 | ||
769 | /* kernel/sys.c */ | |
770 | asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); | |
771 | asmlinkage long compat_sys_getrlimit(unsigned int resource, | |
772 | struct compat_rlimit __user *rlim); | |
773 | asmlinkage long compat_sys_setrlimit(unsigned int resource, | |
774 | struct compat_rlimit __user *rlim); | |
775 | asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); | |
776 | ||
777 | /* kernel/time.c */ | |
9afc5eee | 778 | asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv, |
c679a089 | 779 | struct timezone __user *tz); |
9afc5eee | 780 | asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv, |
c679a089 | 781 | struct timezone __user *tz); |
c679a089 DB |
782 | |
783 | /* kernel/timer.c */ | |
be84cb43 | 784 | asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); |
c679a089 DB |
785 | |
786 | /* ipc/mqueue.c */ | |
be84cb43 CM |
787 | asmlinkage long compat_sys_mq_open(const char __user *u_name, |
788 | int oflag, compat_mode_t mode, | |
789 | struct compat_mq_attr __user *u_attr); | |
c679a089 DB |
790 | asmlinkage long compat_sys_mq_notify(mqd_t mqdes, |
791 | const struct compat_sigevent __user *u_notification); | |
792 | asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, | |
793 | const struct compat_mq_attr __user *u_mqstat, | |
794 | struct compat_mq_attr __user *u_omqstat); | |
4c696ba7 | 795 | |
c679a089 DB |
796 | /* ipc/msg.c */ |
797 | asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); | |
798 | asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, | |
799 | compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); | |
800 | asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, | |
801 | compat_ssize_t msgsz, int msgflg); | |
c41d68a5 | 802 | |
c679a089 DB |
803 | /* ipc/sem.c */ |
804 | asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); | |
c679a089 DB |
805 | |
806 | /* ipc/shm.c */ | |
807 | asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); | |
808 | asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); | |
809 | ||
810 | /* net/socket.c */ | |
811 | asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, | |
812 | unsigned flags, struct sockaddr __user *addr, | |
813 | int __user *addrlen); | |
c679a089 DB |
814 | asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, |
815 | unsigned flags); | |
816 | asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, | |
817 | unsigned int flags); | |
818 | ||
819 | /* mm/filemap.c: No generic prototype for readahead */ | |
c41d68a5 | 820 | |
c679a089 DB |
821 | /* security/keys/keyctl.c */ |
822 | asmlinkage long compat_sys_keyctl(u32 option, | |
823 | u32 arg2, u32 arg3, u32 arg4, u32 arg5); | |
824 | ||
825 | /* arch/example/kernel/sys_example.c */ | |
826 | asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, | |
827 | const compat_uptr_t __user *envp); | |
828 | ||
829 | /* mm/fadvise.c: No generic prototype for fadvise64_64 */ | |
830 | ||
831 | /* mm/, CONFIG_MMU only */ | |
c679a089 DB |
832 | asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, |
833 | compat_pid_t pid, int sig, | |
834 | struct compat_siginfo __user *uinfo); | |
e11d4284 AB |
835 | asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg, |
836 | unsigned vlen, unsigned int flags, | |
837 | struct __kernel_timespec __user *timeout); | |
8dabe724 | 838 | asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg, |
c679a089 | 839 | unsigned vlen, unsigned int flags, |
9afc5eee | 840 | struct old_timespec32 __user *timeout); |
c679a089 DB |
841 | asmlinkage long compat_sys_wait4(compat_pid_t pid, |
842 | compat_uint_t __user *stat_addr, int options, | |
843 | struct compat_rusage __user *ru); | |
844 | asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, | |
845 | int, const char __user *); | |
846 | asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, | |
847 | struct file_handle __user *handle, | |
848 | int flags); | |
c679a089 DB |
849 | asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, |
850 | unsigned vlen, unsigned int flags); | |
c679a089 DB |
851 | asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, |
852 | const compat_uptr_t __user *argv, | |
853 | const compat_uptr_t __user *envp, int flags); | |
854 | asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, | |
3523a9d4 | 855 | const struct iovec __user *vec, |
c679a089 DB |
856 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); |
857 | asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, | |
3523a9d4 | 858 | const struct iovec __user *vec, |
c679a089 DB |
859 | compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); |
860 | #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 | |
576d0703 | 861 | asmlinkage long compat_sys_preadv64v2(unsigned long fd, |
3523a9d4 | 862 | const struct iovec __user *vec, |
c679a089 DB |
863 | unsigned long vlen, loff_t pos, rwf_t flags); |
864 | #endif | |
a67ba43d | 865 | |
c679a089 DB |
866 | #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 |
867 | asmlinkage long compat_sys_pwritev64v2(unsigned long fd, | |
3523a9d4 | 868 | const struct iovec __user *vec, |
c679a089 DB |
869 | unsigned long vlen, loff_t pos, rwf_t flags); |
870 | #endif | |
871 | ||
872 | ||
c679a089 DB |
873 | /* |
874 | * Deprecated system calls which are still defined in | |
875 | * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch | |
876 | */ | |
877 | ||
878 | /* __ARCH_WANT_SYSCALL_NO_AT */ | |
879 | asmlinkage long compat_sys_open(const char __user *filename, int flags, | |
880 | umode_t mode); | |
c679a089 DB |
881 | |
882 | /* __ARCH_WANT_SYSCALL_NO_FLAGS */ | |
883 | asmlinkage long compat_sys_signalfd(int ufd, | |
884 | const compat_sigset_t __user *sigmask, | |
885 | compat_size_t sigsetsize); | |
886 | ||
887 | /* __ARCH_WANT_SYSCALL_OFF_T */ | |
888 | asmlinkage long compat_sys_newstat(const char __user *filename, | |
889 | struct compat_stat __user *statbuf); | |
890 | asmlinkage long compat_sys_newlstat(const char __user *filename, | |
891 | struct compat_stat __user *statbuf); | |
892 | ||
893 | /* __ARCH_WANT_SYSCALL_DEPRECATED */ | |
c679a089 DB |
894 | asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, |
895 | compat_ulong_t __user *outp, compat_ulong_t __user *exp, | |
9afc5eee | 896 | struct old_timeval32 __user *tvp); |
c679a089 DB |
897 | asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); |
898 | asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, | |
899 | unsigned flags); | |
c679a089 DB |
900 | |
901 | /* obsolete: fs/readdir.c */ | |
902 | asmlinkage long compat_sys_old_readdir(unsigned int fd, | |
903 | struct compat_old_linux_dirent __user *, | |
904 | unsigned int count); | |
905 | ||
906 | /* obsolete: fs/select.c */ | |
907 | asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); | |
908 | ||
909 | /* obsolete: ipc */ | |
910 | asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); | |
90268439 | 911 | |
c679a089 | 912 | /* obsolete: kernel/signal.c */ |
e9fb8b7e CM |
913 | #ifdef __ARCH_WANT_SYS_SIGPENDING |
914 | asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); | |
915 | #endif | |
916 | ||
917 | #ifdef __ARCH_WANT_SYS_SIGPROCMASK | |
918 | asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, | |
919 | compat_old_sigset_t __user *oset); | |
920 | #endif | |
c679a089 DB |
921 | #ifdef CONFIG_COMPAT_OLD_SIGACTION |
922 | asmlinkage long compat_sys_sigaction(int sig, | |
923 | const struct compat_old_sigaction __user *act, | |
924 | struct compat_old_sigaction __user *oact); | |
925 | #endif | |
e9fb8b7e | 926 | |
c679a089 DB |
927 | /* obsolete: net/socket.c */ |
928 | asmlinkage long compat_sys_socketcall(int call, u32 __user *args); | |
5180e3e2 | 929 | |
59c10c52 GR |
930 | #ifdef __ARCH_WANT_COMPAT_TRUNCATE64 |
931 | asmlinkage long compat_sys_truncate64(const char __user *pathname, compat_arg_u64(len)); | |
932 | #endif | |
933 | ||
934 | #ifdef __ARCH_WANT_COMPAT_FTRUNCATE64 | |
935 | asmlinkage long compat_sys_ftruncate64(unsigned int fd, compat_arg_u64(len)); | |
936 | #endif | |
937 | ||
938 | #ifdef __ARCH_WANT_COMPAT_FALLOCATE | |
939 | asmlinkage long compat_sys_fallocate(int fd, int mode, compat_arg_u64(offset), | |
940 | compat_arg_u64(len)); | |
941 | #endif | |
942 | ||
943 | #ifdef __ARCH_WANT_COMPAT_PREAD64 | |
944 | asmlinkage long compat_sys_pread64(unsigned int fd, char __user *buf, size_t count, | |
945 | compat_arg_u64(pos)); | |
946 | #endif | |
947 | ||
948 | #ifdef __ARCH_WANT_COMPAT_PWRITE64 | |
949 | asmlinkage long compat_sys_pwrite64(unsigned int fd, const char __user *buf, size_t count, | |
950 | compat_arg_u64(pos)); | |
951 | #endif | |
952 | ||
953 | #ifdef __ARCH_WANT_COMPAT_SYNC_FILE_RANGE | |
954 | asmlinkage long compat_sys_sync_file_range(int fd, compat_arg_u64(pos), | |
955 | compat_arg_u64(nbytes), unsigned int flags); | |
956 | #endif | |
957 | ||
958 | #ifdef __ARCH_WANT_COMPAT_FADVISE64_64 | |
959 | asmlinkage long compat_sys_fadvise64_64(int fd, compat_arg_u64(pos), | |
960 | compat_arg_u64(len), int advice); | |
961 | #endif | |
962 | ||
963 | #ifdef __ARCH_WANT_COMPAT_READAHEAD | |
964 | asmlinkage long compat_sys_readahead(int fd, compat_arg_u64(offset), size_t count); | |
965 | #endif | |
966 | ||
7303e30e DB |
967 | #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ |
968 | ||
cd19c364 | 969 | /** |
9afc5eee | 970 | * ns_to_old_timeval32 - Compat version of ns_to_timeval |
cd19c364 FW |
971 | * @nsec: the nanoseconds value to be converted |
972 | * | |
9afc5eee | 973 | * Returns the old_timeval32 representation of the nsec parameter. |
cd19c364 | 974 | */ |
9afc5eee | 975 | static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec) |
cd19c364 | 976 | { |
693737b6 | 977 | struct __kernel_old_timeval tv; |
9afc5eee | 978 | struct old_timeval32 ctv; |
cd19c364 | 979 | |
693737b6 | 980 | tv = ns_to_kernel_old_timeval(nsec); |
cd19c364 FW |
981 | ctv.tv_sec = tv.tv_sec; |
982 | ctv.tv_usec = tv.tv_usec; | |
983 | ||
984 | return ctv; | |
985 | } | |
986 | ||
9b54bf9d MR |
987 | /* |
988 | * Kernel code should not call compat syscalls (i.e., compat_sys_xyzyyz()) | |
989 | * directly. Instead, use one of the functions which work equivalently, such | |
990 | * as the kcompat_sys_xyzyyz() functions prototyped below. | |
991 | */ | |
992 | ||
993 | int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz, | |
994 | struct compat_statfs64 __user * buf); | |
995 | int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz, | |
996 | struct compat_statfs64 __user * buf); | |
997 | ||
1a33b18b AB |
998 | #ifdef CONFIG_COMPAT |
999 | ||
1000 | /* | |
1001 | * For most but not all architectures, "am I in a compat syscall?" and | |
1002 | * "am I a compat task?" are the same question. For architectures on which | |
1003 | * they aren't the same question, arch code can override in_compat_syscall. | |
1004 | */ | |
1005 | #ifndef in_compat_syscall | |
1006 | static inline bool in_compat_syscall(void) { return is_compat_task(); } | |
1007 | #endif | |
1008 | ||
cd19c364 | 1009 | #else /* !CONFIG_COMPAT */ |
3c761ea0 LT |
1010 | |
1011 | #define is_compat_task() (0) | |
a846446b DS |
1012 | /* Ensure no one redefines in_compat_syscall() under !CONFIG_COMPAT */ |
1013 | #define in_compat_syscall in_compat_syscall | |
5180e3e2 | 1014 | static inline bool in_compat_syscall(void) { return false; } |
3c761ea0 | 1015 | |
1da177e4 | 1016 | #endif /* CONFIG_COMPAT */ |
5180e3e2 | 1017 | |
e130242d AB |
1018 | #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) |
1019 | ||
1020 | #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) | |
1021 | ||
1022 | long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, | |
1023 | unsigned long bitmap_size); | |
1024 | long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, | |
1025 | unsigned long bitmap_size); | |
1026 | ||
527c4125 CH |
1027 | /* |
1028 | * Some legacy ABIs like the i386 one use less than natural alignment for 64-bit | |
1029 | * types, and will need special compat treatment for that. Most architectures | |
1030 | * don't need that special handling even for compat syscalls. | |
1031 | */ | |
1032 | #ifndef compat_need_64bit_alignment_fixup | |
1033 | #define compat_need_64bit_alignment_fixup() false | |
1034 | #endif | |
1035 | ||
202bf8d7 AB |
1036 | /* |
1037 | * A pointer passed in from user mode. This should not | |
1038 | * be used for syscall parameters, just declare them | |
1039 | * as pointers because the syscall entry code will have | |
1040 | * appropriately converted them already. | |
1041 | */ | |
1042 | #ifndef compat_ptr | |
1043 | static inline void __user *compat_ptr(compat_uptr_t uptr) | |
1044 | { | |
1045 | return (void __user *)(unsigned long)uptr; | |
1046 | } | |
1047 | #endif | |
1048 | ||
1049 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) | |
1050 | { | |
1051 | return (u32)(unsigned long)uptr; | |
1052 | } | |
1053 | ||
1da177e4 | 1054 | #endif /* _LINUX_COMPAT_H */ |