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 if (t->sas_ss_flags & SS_AUTODISARM) \
536 sas_ss_reset(t); \
537} while (0);
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
553asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
554asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
555 u32 __user *iocb);
556asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id,
557 compat_long_t min_nr,
558 compat_long_t nr,
559 struct io_event __user *events,
560 struct old_timespec32 __user *timeout,
561 const struct __compat_aio_sigset __user *usig);
562asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id,
563 compat_long_t min_nr,
564 compat_long_t nr,
565 struct io_event __user *events,
566 struct __kernel_timespec __user *timeout,
567 const struct __compat_aio_sigset __user *usig);
568
569
570asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
571
572
573asmlinkage long compat_sys_epoll_pwait(int epfd,
574 struct epoll_event __user *events,
575 int maxevents, int timeout,
576 const compat_sigset_t __user *sigmask,
577 compat_size_t sigsetsize);
578asmlinkage long compat_sys_epoll_pwait2(int epfd,
579 struct epoll_event __user *events,
580 int maxevents,
581 const struct __kernel_timespec __user *timeout,
582 const compat_sigset_t __user *sigmask,
583 compat_size_t sigsetsize);
584
585
586asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
587 compat_ulong_t arg);
588asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
589 compat_ulong_t arg);
590
591
592asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
593 compat_ulong_t arg);
594
595
596asmlinkage long compat_sys_statfs(const char __user *pathname,
597 struct compat_statfs __user *buf);
598asmlinkage long compat_sys_statfs64(const char __user *pathname,
599 compat_size_t sz,
600 struct compat_statfs64 __user *buf);
601asmlinkage long compat_sys_fstatfs(unsigned int fd,
602 struct compat_statfs __user *buf);
603asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
604 struct compat_statfs64 __user *buf);
605asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
606asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
607
608asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
609 int flags, umode_t mode);
610
611
612asmlinkage long compat_sys_getdents(unsigned int fd,
613 struct compat_linux_dirent __user *dirent,
614 unsigned int count);
615
616
617asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
618
619asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
620 const struct iovec __user *vec,
621 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
622asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
623 const struct iovec __user *vec,
624 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
625#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
626asmlinkage long compat_sys_preadv64(unsigned long fd,
627 const struct iovec __user *vec,
628 unsigned long vlen, loff_t pos);
629#endif
630
631#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
632asmlinkage long compat_sys_pwritev64(unsigned long fd,
633 const struct iovec __user *vec,
634 unsigned long vlen, loff_t pos);
635#endif
636
637
638asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
639 compat_off_t __user *offset, compat_size_t count);
640asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
641 compat_loff_t __user *offset, compat_size_t count);
642
643
644asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp,
645 compat_ulong_t __user *outp,
646 compat_ulong_t __user *exp,
647 struct old_timespec32 __user *tsp,
648 void __user *sig);
649asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp,
650 compat_ulong_t __user *outp,
651 compat_ulong_t __user *exp,
652 struct __kernel_timespec __user *tsp,
653 void __user *sig);
654asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds,
655 unsigned int nfds,
656 struct old_timespec32 __user *tsp,
657 const compat_sigset_t __user *sigmask,
658 compat_size_t sigsetsize);
659asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds,
660 unsigned int nfds,
661 struct __kernel_timespec __user *tsp,
662 const compat_sigset_t __user *sigmask,
663 compat_size_t sigsetsize);
664
665
666asmlinkage long compat_sys_signalfd4(int ufd,
667 const compat_sigset_t __user *sigmask,
668 compat_size_t sigsetsize, int flags);
669
670
671asmlinkage long compat_sys_newfstatat(unsigned int dfd,
672 const char __user *filename,
673 struct compat_stat __user *statbuf,
674 int flag);
675asmlinkage long compat_sys_newfstat(unsigned int fd,
676 struct compat_stat __user *statbuf);
677
678
679
680
681asmlinkage long compat_sys_waitid(int, compat_pid_t,
682 struct compat_siginfo __user *, int,
683 struct compat_rusage __user *);
684
685
686
687
688asmlinkage long
689compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
690 compat_size_t len);
691asmlinkage long
692compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
693 compat_size_t __user *len_ptr);
694
695
696asmlinkage long compat_sys_getitimer(int which,
697 struct old_itimerval32 __user *it);
698asmlinkage long compat_sys_setitimer(int which,
699 struct old_itimerval32 __user *in,
700 struct old_itimerval32 __user *out);
701
702
703asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
704 compat_ulong_t nr_segments,
705 struct compat_kexec_segment __user *,
706 compat_ulong_t flags);
707
708
709asmlinkage long compat_sys_timer_create(clockid_t which_clock,
710 struct compat_sigevent __user *timer_event_spec,
711 timer_t __user *created_timer_id);
712
713
714asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
715 compat_long_t addr, compat_long_t data);
716
717
718asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
719 unsigned int len,
720 compat_ulong_t __user *user_mask_ptr);
721asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
722 unsigned int len,
723 compat_ulong_t __user *user_mask_ptr);
724
725
726asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
727 compat_stack_t __user *uoss_ptr);
728asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
729 compat_size_t sigsetsize);
730#ifndef CONFIG_ODD_RT_SIGACTION
731asmlinkage long compat_sys_rt_sigaction(int,
732 const struct compat_sigaction __user *,
733 struct compat_sigaction __user *,
734 compat_size_t);
735#endif
736asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
737 compat_sigset_t __user *oset,
738 compat_size_t sigsetsize);
739asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
740 compat_size_t sigsetsize);
741asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese,
742 struct compat_siginfo __user *uinfo,
743 struct old_timespec32 __user *uts, compat_size_t sigsetsize);
744asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese,
745 struct compat_siginfo __user *uinfo,
746 struct __kernel_timespec __user *uts, compat_size_t sigsetsize);
747asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
748 struct compat_siginfo __user *uinfo);
749
750
751
752asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
753asmlinkage long compat_sys_getrlimit(unsigned int resource,
754 struct compat_rlimit __user *rlim);
755asmlinkage long compat_sys_setrlimit(unsigned int resource,
756 struct compat_rlimit __user *rlim);
757asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
758
759
760asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv,
761 struct timezone __user *tz);
762asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv,
763 struct timezone __user *tz);
764
765
766asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
767
768
769asmlinkage long compat_sys_mq_open(const char __user *u_name,
770 int oflag, compat_mode_t mode,
771 struct compat_mq_attr __user *u_attr);
772asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
773 const struct compat_sigevent __user *u_notification);
774asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
775 const struct compat_mq_attr __user *u_mqstat,
776 struct compat_mq_attr __user *u_omqstat);
777
778
779asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr);
780asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
781 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
782asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
783 compat_ssize_t msgsz, int msgflg);
784
785
786asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
787
788
789asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr);
790asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
791
792
793asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
794 unsigned flags, struct sockaddr __user *addr,
795 int __user *addrlen);
796asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
797 unsigned flags);
798asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
799 unsigned int flags);
800
801
802
803
804asmlinkage long compat_sys_keyctl(u32 option,
805 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
806
807
808asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
809 const compat_uptr_t __user *envp);
810
811
812
813
814asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
815 compat_ulong_t mode,
816 compat_ulong_t __user *nmask,
817 compat_ulong_t maxnode, compat_ulong_t flags);
818asmlinkage long compat_sys_get_mempolicy(int __user *policy,
819 compat_ulong_t __user *nmask,
820 compat_ulong_t maxnode,
821 compat_ulong_t addr,
822 compat_ulong_t flags);
823asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
824 compat_ulong_t maxnode);
825asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
826 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
827 const compat_ulong_t __user *new_nodes);
828asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
829 __u32 __user *pages,
830 const int __user *nodes,
831 int __user *status,
832 int flags);
833
834asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid,
835 compat_pid_t pid, int sig,
836 struct compat_siginfo __user *uinfo);
837asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg,
838 unsigned vlen, unsigned int flags,
839 struct __kernel_timespec __user *timeout);
840asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg,
841 unsigned vlen, unsigned int flags,
842 struct old_timespec32 __user *timeout);
843asmlinkage long compat_sys_wait4(compat_pid_t pid,
844 compat_uint_t __user *stat_addr, int options,
845 struct compat_rusage __user *ru);
846asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
847 int, const char __user *);
848asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
849 struct file_handle __user *handle,
850 int flags);
851asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
852 unsigned vlen, unsigned int flags);
853asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
854 const compat_uptr_t __user *argv,
855 const compat_uptr_t __user *envp, int flags);
856asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
857 const struct iovec __user *vec,
858 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
859asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
860 const struct iovec __user *vec,
861 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
862#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
863asmlinkage long compat_sys_preadv64v2(unsigned long fd,
864 const struct iovec __user *vec,
865 unsigned long vlen, loff_t pos, rwf_t flags);
866#endif
867
868#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
869asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
870 const struct iovec __user *vec,
871 unsigned long vlen, loff_t pos, rwf_t flags);
872#endif
873
874
875
876
877
878
879
880
881asmlinkage long compat_sys_open(const char __user *filename, int flags,
882 umode_t mode);
883
884
885asmlinkage long compat_sys_signalfd(int ufd,
886 const compat_sigset_t __user *sigmask,
887 compat_size_t sigsetsize);
888
889
890asmlinkage long compat_sys_newstat(const char __user *filename,
891 struct compat_stat __user *statbuf);
892asmlinkage long compat_sys_newlstat(const char __user *filename,
893 struct compat_stat __user *statbuf);
894
895
896asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
897 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
898 struct old_timeval32 __user *tvp);
899asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
900asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
901 unsigned flags);
902
903
904asmlinkage long compat_sys_old_readdir(unsigned int fd,
905 struct compat_old_linux_dirent __user *,
906 unsigned int count);
907
908
909asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
910
911
912asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
913
914
915#ifdef __ARCH_WANT_SYS_SIGPENDING
916asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
917#endif
918
919#ifdef __ARCH_WANT_SYS_SIGPROCMASK
920asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
921 compat_old_sigset_t __user *oset);
922#endif
923#ifdef CONFIG_COMPAT_OLD_SIGACTION
924asmlinkage long compat_sys_sigaction(int sig,
925 const struct compat_old_sigaction __user *act,
926 struct compat_old_sigaction __user *oact);
927#endif
928
929
930asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
931
932#endif
933
934
935
936
937
938
939
940
941#ifndef in_compat_syscall
942static inline bool in_compat_syscall(void) { return is_compat_task(); }
943#endif
944
945
946
947
948
949
950
951static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec)
952{
953 struct __kernel_old_timeval tv;
954 struct old_timeval32 ctv;
955
956 tv = ns_to_kernel_old_timeval(nsec);
957 ctv.tv_sec = tv.tv_sec;
958 ctv.tv_usec = tv.tv_usec;
959
960 return ctv;
961}
962
963
964
965
966
967
968
969int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz,
970 struct compat_statfs64 __user * buf);
971int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
972 struct compat_statfs64 __user * buf);
973
974#else
975
976#define is_compat_task() (0)
977
978#define in_compat_syscall in_compat_syscall
979static inline bool in_compat_syscall(void) { return false; }
980
981#endif
982
983
984
985
986
987
988#ifndef compat_need_64bit_alignment_fixup
989#define compat_need_64bit_alignment_fixup() false
990#endif
991
992
993
994
995
996
997
998#ifndef compat_ptr
999static inline void __user *compat_ptr(compat_uptr_t uptr)
1000{
1001 return (void __user *)(unsigned long)uptr;
1002}
1003#endif
1004
1005static inline compat_uptr_t ptr_to_compat(void __user *uptr)
1006{
1007 return (u32)(unsigned long)uptr;
1008}
1009
1010#endif
1011