1
2#ifndef _LINUX_COMPAT_H
3#define _LINUX_COMPAT_H
4
5
6
7
8
9#include <linux/types.h>
10#include <linux/time.h>
11
12#include <linux/stat.h>
13#include <linux/param.h>
14#include <linux/sem.h>
15#include <linux/socket.h>
16#include <linux/if.h>
17#include <linux/fs.h>
18#include <linux/aio_abi.h>
19#include <linux/uaccess.h>
20#include <linux/unistd.h>
21
22#include <asm/compat.h>
23
24#ifdef CONFIG_COMPAT
25#include <asm/siginfo.h>
26#include <asm/signal.h>
27#endif
28
29#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
30
31
32
33
34
35
36
37#include <asm/syscall_wrapper.h>
38#endif
39
40#ifndef COMPAT_USE_64BIT_TIME
41#define COMPAT_USE_64BIT_TIME 0
42#endif
43
44#ifndef __SC_DELOUSE
45#define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v))
46#endif
47
48#ifndef COMPAT_SYSCALL_DEFINE0
49#define COMPAT_SYSCALL_DEFINE0(name) \
50 asmlinkage long compat_sys_##name(void); \
51 ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \
52 asmlinkage long compat_sys_##name(void)
53#endif
54
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
68
69
70
71
72
73#ifndef COMPAT_SYSCALL_DEFINEx
74#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
75 __diag_push(); \
76 __diag_ignore(GCC, 8, "-Wattribute-alias", \
77 "Type aliasing is used to sanitize syscall arguments");\
78 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
79 __attribute__((alias(__stringify(__se_compat_sys##name)))); \
80 ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \
81 static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
82 asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
83 asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
84 { \
85 long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
86 __MAP(x,__SC_TEST,__VA_ARGS__); \
87 return ret; \
88 } \
89 __diag_pop(); \
90 static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
91#endif
92
93struct compat_iovec {
94 compat_uptr_t iov_base;
95 compat_size_t iov_len;
96};
97
98#ifdef CONFIG_COMPAT
99
100#ifndef compat_user_stack_pointer
101#define compat_user_stack_pointer() current_user_stack_pointer()
102#endif
103#ifndef compat_sigaltstack
104typedef struct compat_sigaltstack {
105 compat_uptr_t ss_sp;
106 int ss_flags;
107 compat_size_t ss_size;
108} compat_stack_t;
109#endif
110#ifndef COMPAT_MINSIGSTKSZ
111#define COMPAT_MINSIGSTKSZ MINSIGSTKSZ
112#endif
113
114#define compat_jiffies_to_clock_t(x) \
115 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
116
117typedef __compat_uid32_t compat_uid_t;
118typedef __compat_gid32_t compat_gid_t;
119
120struct compat_sel_arg_struct;
121struct rusage;
122
123struct old_itimerval32;
124
125struct compat_tms {
126 compat_clock_t tms_utime;
127 compat_clock_t tms_stime;
128 compat_clock_t tms_cutime;
129 compat_clock_t tms_cstime;
130};
131
132#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
133
134typedef struct {
135 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
136} compat_sigset_t;
137
138int set_compat_user_sigmask(const compat_sigset_t __user *umask,
139 size_t sigsetsize);
140
141struct compat_sigaction {
142#ifndef __ARCH_HAS_IRIX_SIGACTION
143 compat_uptr_t sa_handler;
144 compat_ulong_t sa_flags;
145#else
146 compat_uint_t sa_flags;
147 compat_uptr_t sa_handler;
148#endif
149#ifdef __ARCH_HAS_SA_RESTORER
150 compat_uptr_t sa_restorer;
151#endif
152 compat_sigset_t sa_mask __packed;
153};
154
155typedef union compat_sigval {
156 compat_int_t sival_int;
157 compat_uptr_t sival_ptr;
158} compat_sigval_t;
159
160typedef struct compat_siginfo {
161 int si_signo;
162#ifndef __ARCH_HAS_SWAPPED_SIGINFO
163 int si_errno;
164 int si_code;
165#else
166 int si_code;
167 int si_errno;
168#endif
169
170 union {
171 int _pad[128/sizeof(int) - 3];
172
173
174 struct {
175 compat_pid_t _pid;
176 __compat_uid32_t _uid;
177 } _kill;
178
179
180 struct {
181 compat_timer_t _tid;
182 int _overrun;
183 compat_sigval_t _sigval;
184 } _timer;
185
186
187 struct {
188 compat_pid_t _pid;
189 __compat_uid32_t _uid;
190 compat_sigval_t _sigval;
191 } _rt;
192
193
194 struct {
195 compat_pid_t _pid;
196 __compat_uid32_t _uid;
197 int _status;
198 compat_clock_t _utime;
199 compat_clock_t _stime;
200 } _sigchld;
201
202#ifdef CONFIG_X86_X32_ABI
203
204 struct {
205 compat_pid_t _pid;
206 __compat_uid32_t _uid;
207 int _status;
208 compat_s64 _utime;
209 compat_s64 _stime;
210 } _sigchld_x32;
211#endif
212
213
214 struct {
215 compat_uptr_t _addr;
216#define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \
217 sizeof(short) : __alignof__(compat_uptr_t))
218 union {
219
220 int _trapno;
221
222
223
224
225 short int _addr_lsb;
226
227 struct {
228 char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD];
229 compat_uptr_t _lower;
230 compat_uptr_t _upper;
231 } _addr_bnd;
232
233 struct {
234 char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD];
235 u32 _pkey;
236 } _addr_pkey;
237
238 struct {
239 compat_ulong_t _data;
240 u32 _type;
241 } _perf;
242 };
243 } _sigfault;
244
245
246 struct {
247 compat_long_t _band;
248 int _fd;
249 } _sigpoll;
250
251 struct {
252 compat_uptr_t _call_addr;
253 int _syscall;
254 unsigned int _arch;
255 } _sigsys;
256 } _sifields;
257} compat_siginfo_t;
258
259struct compat_rlimit {
260 compat_ulong_t rlim_cur;
261 compat_ulong_t rlim_max;
262};
263
264struct compat_rusage {
265 struct old_timeval32 ru_utime;
266 struct old_timeval32 ru_stime;
267 compat_long_t ru_maxrss;
268 compat_long_t ru_ixrss;
269 compat_long_t ru_idrss;
270 compat_long_t ru_isrss;
271 compat_long_t ru_minflt;
272 compat_long_t ru_majflt;
273 compat_long_t ru_nswap;
274 compat_long_t ru_inblock;
275 compat_long_t ru_oublock;
276 compat_long_t ru_msgsnd;
277 compat_long_t ru_msgrcv;
278 compat_long_t ru_nsignals;
279 compat_long_t ru_nvcsw;
280 compat_long_t ru_nivcsw;
281};
282
283extern int put_compat_rusage(const struct rusage *,
284 struct compat_rusage __user *);
285
286struct compat_siginfo;
287struct __compat_aio_sigset;
288
289struct compat_dirent {
290 u32 d_ino;
291 compat_off_t d_off;
292 u16 d_reclen;
293 char d_name[256];
294};
295
296struct compat_ustat {
297 compat_daddr_t f_tfree;
298 compat_ino_t f_tinode;
299 char f_fname[6];
300 char f_fpack[6];
301};
302
303#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
304
305typedef struct compat_sigevent {
306 compat_sigval_t sigev_value;
307 compat_int_t sigev_signo;
308 compat_int_t sigev_notify;
309 union {
310 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
311 compat_int_t _tid;
312
313 struct {
314 compat_uptr_t _function;
315 compat_uptr_t _attribute;
316 } _sigev_thread;
317 } _sigev_un;
318} compat_sigevent_t;
319
320struct compat_ifmap {
321 compat_ulong_t mem_start;
322 compat_ulong_t mem_end;
323 unsigned short base_addr;
324 unsigned char irq;
325 unsigned char dma;
326 unsigned char port;
327};
328
329struct compat_if_settings {
330 unsigned int type;
331 unsigned int size;
332 compat_uptr_t ifs_ifsu;
333};
334
335struct compat_ifreq {
336 union {
337 char ifrn_name[IFNAMSIZ];
338 } ifr_ifrn;
339 union {
340 struct sockaddr ifru_addr;
341 struct sockaddr ifru_dstaddr;
342 struct sockaddr ifru_broadaddr;
343 struct sockaddr ifru_netmask;
344 struct sockaddr ifru_hwaddr;
345 short ifru_flags;
346 compat_int_t ifru_ivalue;
347 compat_int_t ifru_mtu;
348 struct compat_ifmap ifru_map;
349 char ifru_slave[IFNAMSIZ];
350 char ifru_newname[IFNAMSIZ];
351 compat_caddr_t ifru_data;
352 struct compat_if_settings ifru_settings;
353 } ifr_ifru;
354};
355
356struct compat_ifconf {
357 compat_int_t ifc_len;
358 compat_caddr_t ifcbuf;
359};
360
361struct compat_robust_list {
362 compat_uptr_t next;
363};
364
365struct compat_robust_list_head {
366 struct compat_robust_list list;
367 compat_long_t futex_offset;
368 compat_uptr_t list_op_pending;
369};
370
371#ifdef CONFIG_COMPAT_OLD_SIGACTION
372struct compat_old_sigaction {
373 compat_uptr_t sa_handler;
374 compat_old_sigset_t sa_mask;
375 compat_ulong_t sa_flags;
376 compat_uptr_t sa_restorer;
377};
378#endif
379
380struct compat_keyctl_kdf_params {
381 compat_uptr_t hashname;
382 compat_uptr_t otherinfo;
383 __u32 otherinfolen;
384 __u32 __spare[8];
385};
386
387struct compat_statfs;
388struct compat_statfs64;
389struct compat_old_linux_dirent;
390struct compat_linux_dirent;
391struct linux_dirent64;
392struct compat_msghdr;
393struct compat_mmsghdr;
394struct compat_sysinfo;
395struct compat_sysctl_args;
396struct compat_kexec_segment;
397struct compat_mq_attr;
398struct compat_msgbuf;
399
400#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
401
402#define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG)
403
404long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
405 unsigned long bitmap_size);
406long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
407 unsigned long bitmap_size);
408void copy_siginfo_to_external32(struct compat_siginfo *to,
409 const struct kernel_siginfo *from);
410int copy_siginfo_from_user32(kernel_siginfo_t *to,
411 const struct compat_siginfo __user *from);
412int __copy_siginfo_to_user32(struct compat_siginfo __user *to,
413 const kernel_siginfo_t *from);
414#ifndef copy_siginfo_to_user32
415#define copy_siginfo_to_user32 __copy_siginfo_to_user32
416#endif
417int get_compat_sigevent(struct sigevent *event,
418 const struct compat_sigevent __user *u_event);
419
420extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat);
421
422
423
424
425
426static inline int
427put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set,
428 unsigned int size)
429{
430
431#ifdef __BIG_ENDIAN
432 compat_sigset_t v;
433 switch (_NSIG_WORDS) {
434 case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
435 fallthrough;
436 case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
437 fallthrough;
438 case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
439 fallthrough;
440 case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0];
441 }
442 return copy_to_user(compat, &v, size) ? -EFAULT : 0;
443#else
444 return copy_to_user(compat, set, size) ? -EFAULT : 0;
445#endif
446}
447
448#ifdef CONFIG_CPU_BIG_ENDIAN
449#define unsafe_put_compat_sigset(compat, set, label) do { \
450 compat_sigset_t __user *__c = compat; \
451 const sigset_t *__s = set; \
452 \
453 switch (_NSIG_WORDS) { \
454 case 4: \
455 unsafe_put_user(__s->sig[3] >> 32, &__c->sig[7], label); \
456 unsafe_put_user(__s->sig[3], &__c->sig[6], label); \
457 fallthrough; \
458 case 3: \
459 unsafe_put_user(__s->sig[2] >> 32, &__c->sig[5], label); \
460 unsafe_put_user(__s->sig[2], &__c->sig[4], label); \
461 fallthrough; \
462 case 2: \
463 unsafe_put_user(__s->sig[1] >> 32, &__c->sig[3], label); \
464 unsafe_put_user(__s->sig[1], &__c->sig[2], label); \
465 fallthrough; \
466 case 1: \
467 unsafe_put_user(__s->sig[0] >> 32, &__c->sig[1], label); \
468 unsafe_put_user(__s->sig[0], &__c->sig[0], label); \
469 } \
470} while (0)
471
472#define unsafe_get_compat_sigset(set, compat, label) do { \
473 const compat_sigset_t __user *__c = compat; \
474 compat_sigset_word hi, lo; \
475 sigset_t *__s = set; \
476 \
477 switch (_NSIG_WORDS) { \
478 case 4: \
479 unsafe_get_user(lo, &__c->sig[7], label); \
480 unsafe_get_user(hi, &__c->sig[6], label); \
481 __s->sig[3] = hi | (((long)lo) << 32); \
482 fallthrough; \
483 case 3: \
484 unsafe_get_user(lo, &__c->sig[5], label); \
485 unsafe_get_user(hi, &__c->sig[4], label); \
486 __s->sig[2] = hi | (((long)lo) << 32); \
487 fallthrough; \
488 case 2: \
489 unsafe_get_user(lo, &__c->sig[3], label); \
490 unsafe_get_user(hi, &__c->sig[2], label); \
491 __s->sig[1] = hi | (((long)lo) << 32); \
492 fallthrough; \
493 case 1: \
494 unsafe_get_user(lo, &__c->sig[1], label); \
495 unsafe_get_user(hi, &__c->sig[0], label); \
496 __s->sig[0] = hi | (((long)lo) << 32); \
497 } \
498} while (0)
499#else
500#define unsafe_put_compat_sigset(compat, set, label) do { \
501 compat_sigset_t __user *__c = compat; \
502 const sigset_t *__s = set; \
503 \
504 unsafe_copy_to_user(__c, __s, sizeof(*__c), label); \
505} while (0)
506
507#define unsafe_get_compat_sigset(set, compat, label) do { \
508 const compat_sigset_t __user *__c = compat; \
509 sigset_t *__s = set; \
510 \
511 unsafe_copy_from_user(__s, __c, sizeof(*__c), label); \
512} while (0)
513#endif
514
515extern int compat_ptrace_request(struct task_struct *child,
516 compat_long_t request,
517 compat_ulong_t addr, compat_ulong_t data);
518
519extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
520 compat_ulong_t addr, compat_ulong_t data);
521
522struct epoll_event;
523
524extern void __user *compat_alloc_user_space(unsigned long len);
525
526int compat_restore_altstack(const compat_stack_t __user *uss);
527int __compat_save_altstack(compat_stack_t __user *, unsigned long);
528#define unsafe_compat_save_altstack(uss, sp, label) do { \
529 compat_stack_t __user *__uss = uss; \
530 struct task_struct *t = current; \
531 unsafe_put_user(ptr_to_compat((void __user *)t->sas_ss_sp), \
532 &__uss->ss_sp, label); \
533 unsafe_put_user(t->sas_ss_flags, &__uss->ss_flags, label); \
534 unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \
535} while (0);
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
551asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
552asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
553 u32 __user *iocb);
554asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id,
555 compat_long_t min_nr,
556 compat_long_t nr,
557 struct io_event __user *events,
558 struct old_timespec32 __user *timeout,
559 const struct __compat_aio_sigset __user *usig);
560asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id,
561 compat_long_t min_nr,
562 compat_long_t nr,
563 struct io_event __user *events,
564 struct __kernel_timespec __user *timeout,
565 const struct __compat_aio_sigset __user *usig);
566
567
568asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
569
570
571asmlinkage long compat_sys_epoll_pwait(int epfd,
572 struct epoll_event __user *events,
573 int maxevents, int timeout,
574 const compat_sigset_t __user *sigmask,
575 compat_size_t sigsetsize);
576asmlinkage long compat_sys_epoll_pwait2(int epfd,
577 struct epoll_event __user *events,
578 int maxevents,
579 const struct __kernel_timespec __user *timeout,
580 const compat_sigset_t __user *sigmask,
581 compat_size_t sigsetsize);
582
583
584asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
585 compat_ulong_t arg);
586asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
587 compat_ulong_t arg);
588
589
590asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
591 compat_ulong_t arg);
592
593
594asmlinkage long compat_sys_statfs(const char __user *pathname,
595 struct compat_statfs __user *buf);
596asmlinkage long compat_sys_statfs64(const char __user *pathname,
597 compat_size_t sz,
598 struct compat_statfs64 __user *buf);
599asmlinkage long compat_sys_fstatfs(unsigned int fd,
600 struct compat_statfs __user *buf);
601asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
602 struct compat_statfs64 __user *buf);
603asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
604asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
605
606asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
607 int flags, umode_t mode);
608
609
610asmlinkage long compat_sys_getdents(unsigned int fd,
611 struct compat_linux_dirent __user *dirent,
612 unsigned int count);
613
614
615asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
616
617asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
618 const struct iovec __user *vec,
619 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
620asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
621 const struct iovec __user *vec,
622 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
623#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
624asmlinkage long compat_sys_preadv64(unsigned long fd,
625 const struct iovec __user *vec,
626 unsigned long vlen, loff_t pos);
627#endif
628
629#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
630asmlinkage long compat_sys_pwritev64(unsigned long fd,
631 const struct iovec __user *vec,
632 unsigned long vlen, loff_t pos);
633#endif
634
635
636asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
637 compat_off_t __user *offset, compat_size_t count);
638asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
639 compat_loff_t __user *offset, compat_size_t count);
640
641
642asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp,
643 compat_ulong_t __user *outp,
644 compat_ulong_t __user *exp,
645 struct old_timespec32 __user *tsp,
646 void __user *sig);
647asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp,
648 compat_ulong_t __user *outp,
649 compat_ulong_t __user *exp,
650 struct __kernel_timespec __user *tsp,
651 void __user *sig);
652asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds,
653 unsigned int nfds,
654 struct old_timespec32 __user *tsp,
655 const compat_sigset_t __user *sigmask,
656 compat_size_t sigsetsize);
657asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds,
658 unsigned int nfds,
659 struct __kernel_timespec __user *tsp,
660 const compat_sigset_t __user *sigmask,
661 compat_size_t sigsetsize);
662
663
664asmlinkage long compat_sys_signalfd4(int ufd,
665 const compat_sigset_t __user *sigmask,
666 compat_size_t sigsetsize, int flags);
667
668
669asmlinkage long compat_sys_newfstatat(unsigned int dfd,
670 const char __user *filename,
671 struct compat_stat __user *statbuf,
672 int flag);
673asmlinkage long compat_sys_newfstat(unsigned int fd,
674 struct compat_stat __user *statbuf);
675
676
677
678
679asmlinkage long compat_sys_waitid(int, compat_pid_t,
680 struct compat_siginfo __user *, int,
681 struct compat_rusage __user *);
682
683
684
685
686asmlinkage long
687compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
688 compat_size_t len);
689asmlinkage long
690compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
691 compat_size_t __user *len_ptr);
692
693
694asmlinkage long compat_sys_getitimer(int which,
695 struct old_itimerval32 __user *it);
696asmlinkage long compat_sys_setitimer(int which,
697 struct old_itimerval32 __user *in,
698 struct old_itimerval32 __user *out);
699
700
701asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
702 compat_ulong_t nr_segments,
703 struct compat_kexec_segment __user *,
704 compat_ulong_t flags);
705
706
707asmlinkage long compat_sys_timer_create(clockid_t which_clock,
708 struct compat_sigevent __user *timer_event_spec,
709 timer_t __user *created_timer_id);
710
711
712asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
713 compat_long_t addr, compat_long_t data);
714
715
716asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
717 unsigned int len,
718 compat_ulong_t __user *user_mask_ptr);
719asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
720 unsigned int len,
721 compat_ulong_t __user *user_mask_ptr);
722
723
724asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
725 compat_stack_t __user *uoss_ptr);
726asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
727 compat_size_t sigsetsize);
728#ifndef CONFIG_ODD_RT_SIGACTION
729asmlinkage long compat_sys_rt_sigaction(int,
730 const struct compat_sigaction __user *,
731 struct compat_sigaction __user *,
732 compat_size_t);
733#endif
734asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
735 compat_sigset_t __user *oset,
736 compat_size_t sigsetsize);
737asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
738 compat_size_t sigsetsize);
739asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese,
740 struct compat_siginfo __user *uinfo,
741 struct old_timespec32 __user *uts, compat_size_t sigsetsize);
742asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese,
743 struct compat_siginfo __user *uinfo,
744 struct __kernel_timespec __user *uts, compat_size_t sigsetsize);
745asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
746 struct compat_siginfo __user *uinfo);
747
748
749
750asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
751asmlinkage long compat_sys_getrlimit(unsigned int resource,
752 struct compat_rlimit __user *rlim);
753asmlinkage long compat_sys_setrlimit(unsigned int resource,
754 struct compat_rlimit __user *rlim);
755asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
756
757
758asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv,
759 struct timezone __user *tz);
760asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv,
761 struct timezone __user *tz);
762
763
764asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
765
766
767asmlinkage long compat_sys_mq_open(const char __user *u_name,
768 int oflag, compat_mode_t mode,
769 struct compat_mq_attr __user *u_attr);
770asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
771 const struct compat_sigevent __user *u_notification);
772asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
773 const struct compat_mq_attr __user *u_mqstat,
774 struct compat_mq_attr __user *u_omqstat);
775
776
777asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr);
778asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
779 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
780asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
781 compat_ssize_t msgsz, int msgflg);
782
783
784asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
785
786
787asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr);
788asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
789
790
791asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
792 unsigned flags, struct sockaddr __user *addr,
793 int __user *addrlen);
794asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
795 unsigned flags);
796asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
797 unsigned int flags);
798
799
800
801
802asmlinkage long compat_sys_keyctl(u32 option,
803 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
804
805
806asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
807 const compat_uptr_t __user *envp);
808
809
810
811
812asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
813 compat_ulong_t mode,
814 compat_ulong_t __user *nmask,
815 compat_ulong_t maxnode, compat_ulong_t flags);
816asmlinkage long compat_sys_get_mempolicy(int __user *policy,
817 compat_ulong_t __user *nmask,
818 compat_ulong_t maxnode,
819 compat_ulong_t addr,
820 compat_ulong_t flags);
821asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
822 compat_ulong_t maxnode);
823asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
824 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
825 const compat_ulong_t __user *new_nodes);
826asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
827 __u32 __user *pages,
828 const int __user *nodes,
829 int __user *status,
830 int flags);
831
832asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid,
833 compat_pid_t pid, int sig,
834 struct compat_siginfo __user *uinfo);
835asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg,
836 unsigned vlen, unsigned int flags,
837 struct __kernel_timespec __user *timeout);
838asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg,
839 unsigned vlen, unsigned int flags,
840 struct old_timespec32 __user *timeout);
841asmlinkage long compat_sys_wait4(compat_pid_t pid,
842 compat_uint_t __user *stat_addr, int options,
843 struct compat_rusage __user *ru);
844asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
845 int, const char __user *);
846asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
847 struct file_handle __user *handle,
848 int flags);
849asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
850 unsigned vlen, unsigned int flags);
851asmlinkage 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);
854asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
855 const struct iovec __user *vec,
856 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
857asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
858 const struct iovec __user *vec,
859 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
860#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
861asmlinkage long compat_sys_preadv64v2(unsigned long fd,
862 const struct iovec __user *vec,
863 unsigned long vlen, loff_t pos, rwf_t flags);
864#endif
865
866#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
867asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
868 const struct iovec __user *vec,
869 unsigned long vlen, loff_t pos, rwf_t flags);
870#endif
871
872
873
874
875
876
877
878
879asmlinkage long compat_sys_open(const char __user *filename, int flags,
880 umode_t mode);
881
882
883asmlinkage long compat_sys_signalfd(int ufd,
884 const compat_sigset_t __user *sigmask,
885 compat_size_t sigsetsize);
886
887
888asmlinkage long compat_sys_newstat(const char __user *filename,
889 struct compat_stat __user *statbuf);
890asmlinkage long compat_sys_newlstat(const char __user *filename,
891 struct compat_stat __user *statbuf);
892
893
894asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
895 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
896 struct old_timeval32 __user *tvp);
897asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
898asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
899 unsigned flags);
900
901
902asmlinkage long compat_sys_old_readdir(unsigned int fd,
903 struct compat_old_linux_dirent __user *,
904 unsigned int count);
905
906
907asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
908
909
910asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
911
912
913#ifdef __ARCH_WANT_SYS_SIGPENDING
914asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
915#endif
916
917#ifdef __ARCH_WANT_SYS_SIGPROCMASK
918asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
919 compat_old_sigset_t __user *oset);
920#endif
921#ifdef CONFIG_COMPAT_OLD_SIGACTION
922asmlinkage long compat_sys_sigaction(int sig,
923 const struct compat_old_sigaction __user *act,
924 struct compat_old_sigaction __user *oact);
925#endif
926
927
928asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
929
930#endif
931
932
933
934
935
936
937
938
939#ifndef in_compat_syscall
940static inline bool in_compat_syscall(void) { return is_compat_task(); }
941#endif
942
943
944
945
946
947
948
949static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec)
950{
951 struct __kernel_old_timeval tv;
952 struct old_timeval32 ctv;
953
954 tv = ns_to_kernel_old_timeval(nsec);
955 ctv.tv_sec = tv.tv_sec;
956 ctv.tv_usec = tv.tv_usec;
957
958 return ctv;
959}
960
961
962
963
964
965
966
967int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz,
968 struct compat_statfs64 __user * buf);
969int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
970 struct compat_statfs64 __user * buf);
971
972#else
973
974#define is_compat_task() (0)
975
976#define in_compat_syscall in_compat_syscall
977static inline bool in_compat_syscall(void) { return false; }
978
979#endif
980
981
982
983
984
985
986#ifndef compat_need_64bit_alignment_fixup
987#define compat_need_64bit_alignment_fixup() false
988#endif
989
990
991
992
993
994
995
996#ifndef compat_ptr
997static inline void __user *compat_ptr(compat_uptr_t uptr)
998{
999 return (void __user *)(unsigned long)uptr;
1000}
1001#endif
1002
1003static inline compat_uptr_t ptr_to_compat(void __user *uptr)
1004{
1005 return (u32)(unsigned long)uptr;
1006}
1007
1008#endif
1009