1
2#ifndef _LINUX_COMPAT_H
3#define _LINUX_COMPAT_H
4
5
6
7
8
9#include <linux/types.h>
10#include <linux/compat_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 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
80 __attribute__((alias(__stringify(__se_compat_sys##name)))); \
81 ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \
82 static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
83 asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
84 asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
85 { \
86 long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
87 __MAP(x,__SC_TEST,__VA_ARGS__); \
88 return ret; \
89 } \
90 __diag_pop(); \
91 static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
92#endif
93
94#ifdef CONFIG_COMPAT
95
96#ifndef compat_user_stack_pointer
97#define compat_user_stack_pointer() current_user_stack_pointer()
98#endif
99#ifndef compat_sigaltstack
100typedef struct compat_sigaltstack {
101 compat_uptr_t ss_sp;
102 int ss_flags;
103 compat_size_t ss_size;
104} compat_stack_t;
105#endif
106
107#define compat_jiffies_to_clock_t(x) \
108 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
109
110typedef __compat_uid32_t compat_uid_t;
111typedef __compat_gid32_t compat_gid_t;
112
113struct compat_sel_arg_struct;
114struct rusage;
115
116struct compat_itimerspec {
117 struct compat_timespec it_interval;
118 struct compat_timespec it_value;
119};
120
121struct compat_utimbuf {
122 compat_time_t actime;
123 compat_time_t modtime;
124};
125
126struct compat_itimerval {
127 struct compat_timeval it_interval;
128 struct compat_timeval it_value;
129};
130
131struct itimerval;
132int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *);
133int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *);
134
135struct compat_tms {
136 compat_clock_t tms_utime;
137 compat_clock_t tms_stime;
138 compat_clock_t tms_cutime;
139 compat_clock_t tms_cstime;
140};
141
142struct compat_timex {
143 compat_uint_t modes;
144 compat_long_t offset;
145 compat_long_t freq;
146 compat_long_t maxerror;
147 compat_long_t esterror;
148 compat_int_t status;
149 compat_long_t constant;
150 compat_long_t precision;
151 compat_long_t tolerance;
152 struct compat_timeval time;
153 compat_long_t tick;
154 compat_long_t ppsfreq;
155 compat_long_t jitter;
156 compat_int_t shift;
157 compat_long_t stabil;
158 compat_long_t jitcnt;
159 compat_long_t calcnt;
160 compat_long_t errcnt;
161 compat_long_t stbcnt;
162 compat_int_t tai;
163
164 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
165 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
166 compat_int_t:32; compat_int_t:32; compat_int_t:32;
167};
168
169struct timex;
170int compat_get_timex(struct timex *, const struct compat_timex __user *);
171int compat_put_timex(struct compat_timex __user *, const struct timex *);
172
173#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
174
175typedef struct {
176 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
177} compat_sigset_t;
178
179int set_compat_user_sigmask(const compat_sigset_t __user *usigmask,
180 sigset_t *set, sigset_t *oldset,
181 size_t sigsetsize);
182
183struct compat_sigaction {
184#ifndef __ARCH_HAS_IRIX_SIGACTION
185 compat_uptr_t sa_handler;
186 compat_ulong_t sa_flags;
187#else
188 compat_uint_t sa_flags;
189 compat_uptr_t sa_handler;
190#endif
191#ifdef __ARCH_HAS_SA_RESTORER
192 compat_uptr_t sa_restorer;
193#endif
194 compat_sigset_t sa_mask __packed;
195};
196
197typedef union compat_sigval {
198 compat_int_t sival_int;
199 compat_uptr_t sival_ptr;
200} compat_sigval_t;
201
202typedef struct compat_siginfo {
203 int si_signo;
204#ifndef __ARCH_HAS_SWAPPED_SIGINFO
205 int si_errno;
206 int si_code;
207#else
208 int si_code;
209 int si_errno;
210#endif
211
212 union {
213 int _pad[128/sizeof(int) - 3];
214
215
216 struct {
217 compat_pid_t _pid;
218 __compat_uid32_t _uid;
219 } _kill;
220
221
222 struct {
223 compat_timer_t _tid;
224 int _overrun;
225 compat_sigval_t _sigval;
226 } _timer;
227
228
229 struct {
230 compat_pid_t _pid;
231 __compat_uid32_t _uid;
232 compat_sigval_t _sigval;
233 } _rt;
234
235
236 struct {
237 compat_pid_t _pid;
238 __compat_uid32_t _uid;
239 int _status;
240 compat_clock_t _utime;
241 compat_clock_t _stime;
242 } _sigchld;
243
244#ifdef CONFIG_X86_X32_ABI
245
246 struct {
247 compat_pid_t _pid;
248 __compat_uid32_t _uid;
249 int _status;
250 compat_s64 _utime;
251 compat_s64 _stime;
252 } _sigchld_x32;
253#endif
254
255
256 struct {
257 compat_uptr_t _addr;
258#ifdef __ARCH_SI_TRAPNO
259 int _trapno;
260#endif
261#define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \
262 sizeof(short) : __alignof__(compat_uptr_t))
263 union {
264
265
266
267
268 short int _addr_lsb;
269
270 struct {
271 char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD];
272 compat_uptr_t _lower;
273 compat_uptr_t _upper;
274 } _addr_bnd;
275
276 struct {
277 char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD];
278 u32 _pkey;
279 } _addr_pkey;
280 };
281 } _sigfault;
282
283
284 struct {
285 compat_long_t _band;
286 int _fd;
287 } _sigpoll;
288
289 struct {
290 compat_uptr_t _call_addr;
291 int _syscall;
292 unsigned int _arch;
293 } _sigsys;
294 } _sifields;
295} compat_siginfo_t;
296
297
298
299
300
301extern int compat_get_timespec(struct timespec *, const void __user *);
302extern int compat_put_timespec(const struct timespec *, void __user *);
303extern int compat_get_timeval(struct timeval *, const void __user *);
304extern int compat_put_timeval(const struct timeval *, void __user *);
305extern int get_compat_itimerspec64(struct itimerspec64 *its,
306 const struct compat_itimerspec __user *uits);
307extern int put_compat_itimerspec64(const struct itimerspec64 *its,
308 struct compat_itimerspec __user *uits);
309
310struct compat_iovec {
311 compat_uptr_t iov_base;
312 compat_size_t iov_len;
313};
314
315struct compat_rlimit {
316 compat_ulong_t rlim_cur;
317 compat_ulong_t rlim_max;
318};
319
320struct compat_rusage {
321 struct compat_timeval ru_utime;
322 struct compat_timeval ru_stime;
323 compat_long_t ru_maxrss;
324 compat_long_t ru_ixrss;
325 compat_long_t ru_idrss;
326 compat_long_t ru_isrss;
327 compat_long_t ru_minflt;
328 compat_long_t ru_majflt;
329 compat_long_t ru_nswap;
330 compat_long_t ru_inblock;
331 compat_long_t ru_oublock;
332 compat_long_t ru_msgsnd;
333 compat_long_t ru_msgrcv;
334 compat_long_t ru_nsignals;
335 compat_long_t ru_nvcsw;
336 compat_long_t ru_nivcsw;
337};
338
339extern int put_compat_rusage(const struct rusage *,
340 struct compat_rusage __user *);
341
342struct compat_siginfo;
343struct __compat_aio_sigset;
344
345struct compat_dirent {
346 u32 d_ino;
347 compat_off_t d_off;
348 u16 d_reclen;
349 char d_name[256];
350};
351
352struct compat_ustat {
353 compat_daddr_t f_tfree;
354 compat_ino_t f_tinode;
355 char f_fname[6];
356 char f_fpack[6];
357};
358
359#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
360
361typedef struct compat_sigevent {
362 compat_sigval_t sigev_value;
363 compat_int_t sigev_signo;
364 compat_int_t sigev_notify;
365 union {
366 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
367 compat_int_t _tid;
368
369 struct {
370 compat_uptr_t _function;
371 compat_uptr_t _attribute;
372 } _sigev_thread;
373 } _sigev_un;
374} compat_sigevent_t;
375
376struct compat_ifmap {
377 compat_ulong_t mem_start;
378 compat_ulong_t mem_end;
379 unsigned short base_addr;
380 unsigned char irq;
381 unsigned char dma;
382 unsigned char port;
383};
384
385struct compat_if_settings {
386 unsigned int type;
387 unsigned int size;
388 compat_uptr_t ifs_ifsu;
389};
390
391struct compat_ifreq {
392 union {
393 char ifrn_name[IFNAMSIZ];
394 } ifr_ifrn;
395 union {
396 struct sockaddr ifru_addr;
397 struct sockaddr ifru_dstaddr;
398 struct sockaddr ifru_broadaddr;
399 struct sockaddr ifru_netmask;
400 struct sockaddr ifru_hwaddr;
401 short ifru_flags;
402 compat_int_t ifru_ivalue;
403 compat_int_t ifru_mtu;
404 struct compat_ifmap ifru_map;
405 char ifru_slave[IFNAMSIZ];
406 char ifru_newname[IFNAMSIZ];
407 compat_caddr_t ifru_data;
408 struct compat_if_settings ifru_settings;
409 } ifr_ifru;
410};
411
412struct compat_ifconf {
413 compat_int_t ifc_len;
414 compat_caddr_t ifcbuf;
415};
416
417struct compat_robust_list {
418 compat_uptr_t next;
419};
420
421struct compat_robust_list_head {
422 struct compat_robust_list list;
423 compat_long_t futex_offset;
424 compat_uptr_t list_op_pending;
425};
426
427#ifdef CONFIG_COMPAT_OLD_SIGACTION
428struct compat_old_sigaction {
429 compat_uptr_t sa_handler;
430 compat_old_sigset_t sa_mask;
431 compat_ulong_t sa_flags;
432 compat_uptr_t sa_restorer;
433};
434#endif
435
436struct compat_keyctl_kdf_params {
437 compat_uptr_t hashname;
438 compat_uptr_t otherinfo;
439 __u32 otherinfolen;
440 __u32 __spare[8];
441};
442
443struct compat_statfs;
444struct compat_statfs64;
445struct compat_old_linux_dirent;
446struct compat_linux_dirent;
447struct linux_dirent64;
448struct compat_msghdr;
449struct compat_mmsghdr;
450struct compat_sysinfo;
451struct compat_sysctl_args;
452struct compat_kexec_segment;
453struct compat_mq_attr;
454struct compat_msgbuf;
455
456#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
457
458#define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG)
459
460long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
461 unsigned long bitmap_size);
462long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
463 unsigned long bitmap_size);
464int copy_siginfo_from_user32(kernel_siginfo_t *to, const struct compat_siginfo __user *from);
465int copy_siginfo_to_user32(struct compat_siginfo __user *to, const kernel_siginfo_t *from);
466int get_compat_sigevent(struct sigevent *event,
467 const struct compat_sigevent __user *u_event);
468
469static inline int compat_timeval_compare(struct compat_timeval *lhs,
470 struct compat_timeval *rhs)
471{
472 if (lhs->tv_sec < rhs->tv_sec)
473 return -1;
474 if (lhs->tv_sec > rhs->tv_sec)
475 return 1;
476 return lhs->tv_usec - rhs->tv_usec;
477}
478
479static inline int compat_timespec_compare(struct compat_timespec *lhs,
480 struct compat_timespec *rhs)
481{
482 if (lhs->tv_sec < rhs->tv_sec)
483 return -1;
484 if (lhs->tv_sec > rhs->tv_sec)
485 return 1;
486 return lhs->tv_nsec - rhs->tv_nsec;
487}
488
489extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat);
490
491
492
493
494
495static inline int
496put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set,
497 unsigned int size)
498{
499
500#ifdef __BIG_ENDIAN
501 compat_sigset_t v;
502 switch (_NSIG_WORDS) {
503 case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
504 case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
505 case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
506 case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0];
507 }
508 return copy_to_user(compat, &v, size) ? -EFAULT : 0;
509#else
510 return copy_to_user(compat, set, size) ? -EFAULT : 0;
511#endif
512}
513
514extern int compat_ptrace_request(struct task_struct *child,
515 compat_long_t request,
516 compat_ulong_t addr, compat_ulong_t data);
517
518extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
519 compat_ulong_t addr, compat_ulong_t data);
520
521struct epoll_event;
522
523extern ssize_t compat_rw_copy_check_uvector(int type,
524 const struct compat_iovec __user *uvector,
525 unsigned long nr_segs,
526 unsigned long fast_segs, struct iovec *fast_pointer,
527 struct iovec **ret_pointer);
528
529extern void __user *compat_alloc_user_space(unsigned long len);
530
531int compat_restore_altstack(const compat_stack_t __user *uss);
532int __compat_save_altstack(compat_stack_t __user *, unsigned long);
533#define compat_save_altstack_ex(uss, sp) do { \
534 compat_stack_t __user *__uss = uss; \
535 struct task_struct *t = current; \
536 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
537 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
538 put_user_ex(t->sas_ss_size, &__uss->ss_size); \
539 if (t->sas_ss_flags & SS_AUTODISARM) \
540 sas_ss_reset(t); \
541} while (0);
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
557asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
558asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
559 u32 __user *iocb);
560asmlinkage long compat_sys_io_getevents(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 compat_timespec __user *timeout);
565asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id,
566 compat_long_t min_nr,
567 compat_long_t nr,
568 struct io_event __user *events,
569 struct compat_timespec __user *timeout,
570 const struct __compat_aio_sigset __user *usig);
571
572
573asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
574
575
576asmlinkage long compat_sys_epoll_pwait(int epfd,
577 struct epoll_event __user *events,
578 int maxevents, int timeout,
579 const compat_sigset_t __user *sigmask,
580 compat_size_t sigsetsize);
581
582
583asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
584 compat_ulong_t arg);
585asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
586 compat_ulong_t arg);
587
588
589asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
590 compat_ulong_t arg);
591
592
593asmlinkage long compat_sys_mount(const char __user *dev_name,
594 const char __user *dir_name,
595 const char __user *type, compat_ulong_t flags,
596 const void __user *data);
597
598
599asmlinkage long compat_sys_statfs(const char __user *pathname,
600 struct compat_statfs __user *buf);
601asmlinkage long compat_sys_statfs64(const char __user *pathname,
602 compat_size_t sz,
603 struct compat_statfs64 __user *buf);
604asmlinkage long compat_sys_fstatfs(unsigned int fd,
605 struct compat_statfs __user *buf);
606asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
607 struct compat_statfs64 __user *buf);
608asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
609asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
610
611asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
612 int flags, umode_t mode);
613
614
615asmlinkage long compat_sys_getdents(unsigned int fd,
616 struct compat_linux_dirent __user *dirent,
617 unsigned int count);
618
619
620asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
621asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
622 const struct compat_iovec __user *vec, compat_ulong_t vlen);
623asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
624 const struct compat_iovec __user *vec, compat_ulong_t vlen);
625
626asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
627 const struct compat_iovec __user *vec,
628 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
629asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
630 const struct compat_iovec __user *vec,
631 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
632#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
633asmlinkage long compat_sys_preadv64(unsigned long fd,
634 const struct compat_iovec __user *vec,
635 unsigned long vlen, loff_t pos);
636#endif
637
638#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
639asmlinkage long compat_sys_pwritev64(unsigned long fd,
640 const struct compat_iovec __user *vec,
641 unsigned long vlen, loff_t pos);
642#endif
643
644
645asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
646 compat_off_t __user *offset, compat_size_t count);
647asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
648 compat_loff_t __user *offset, compat_size_t count);
649
650
651asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
652 compat_ulong_t __user *outp,
653 compat_ulong_t __user *exp,
654 struct compat_timespec __user *tsp,
655 void __user *sig);
656asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
657 unsigned int nfds,
658 struct compat_timespec __user *tsp,
659 const compat_sigset_t __user *sigmask,
660 compat_size_t sigsetsize);
661
662
663asmlinkage long compat_sys_signalfd4(int ufd,
664 const compat_sigset_t __user *sigmask,
665 compat_size_t sigsetsize, int flags);
666
667
668asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
669 unsigned int nr_segs, unsigned int flags);
670
671
672asmlinkage long compat_sys_newfstatat(unsigned int dfd,
673 const char __user *filename,
674 struct compat_stat __user *statbuf,
675 int flag);
676asmlinkage long compat_sys_newfstat(unsigned int fd,
677 struct compat_stat __user *statbuf);
678
679
680
681
682asmlinkage long compat_sys_timerfd_gettime(int ufd,
683 struct compat_itimerspec __user *otmr);
684asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
685 const struct compat_itimerspec __user *utmr,
686 struct compat_itimerspec __user *otmr);
687
688
689asmlinkage long compat_sys_utimensat(unsigned int dfd,
690 const char __user *filename,
691 struct compat_timespec __user *t,
692 int flags);
693
694
695asmlinkage long compat_sys_waitid(int, compat_pid_t,
696 struct compat_siginfo __user *, int,
697 struct compat_rusage __user *);
698
699
700
701
702asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
703 struct compat_timespec __user *utime, u32 __user *uaddr2,
704 u32 val3);
705asmlinkage long
706compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
707 compat_size_t len);
708asmlinkage long
709compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
710 compat_size_t __user *len_ptr);
711
712
713asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
714 struct compat_timespec __user *rmtp);
715
716
717asmlinkage long compat_sys_getitimer(int which,
718 struct compat_itimerval __user *it);
719asmlinkage long compat_sys_setitimer(int which,
720 struct compat_itimerval __user *in,
721 struct compat_itimerval __user *out);
722
723
724asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
725 compat_ulong_t nr_segments,
726 struct compat_kexec_segment __user *,
727 compat_ulong_t flags);
728
729
730asmlinkage long compat_sys_timer_create(clockid_t which_clock,
731 struct compat_sigevent __user *timer_event_spec,
732 timer_t __user *created_timer_id);
733asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
734 struct compat_itimerspec __user *setting);
735asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
736 struct compat_itimerspec __user *new,
737 struct compat_itimerspec __user *old);
738asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
739 struct compat_timespec __user *tp);
740asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
741 struct compat_timespec __user *tp);
742asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
743 struct compat_timespec __user *tp);
744asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
745 struct compat_timespec __user *rqtp,
746 struct compat_timespec __user *rmtp);
747
748
749asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
750 compat_long_t addr, compat_long_t data);
751
752
753asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
754 unsigned int len,
755 compat_ulong_t __user *user_mask_ptr);
756asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
757 unsigned int len,
758 compat_ulong_t __user *user_mask_ptr);
759asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
760 struct compat_timespec __user *interval);
761
762
763asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
764 compat_stack_t __user *uoss_ptr);
765asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
766 compat_size_t sigsetsize);
767#ifndef CONFIG_ODD_RT_SIGACTION
768asmlinkage long compat_sys_rt_sigaction(int,
769 const struct compat_sigaction __user *,
770 struct compat_sigaction __user *,
771 compat_size_t);
772#endif
773asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
774 compat_sigset_t __user *oset,
775 compat_size_t sigsetsize);
776asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
777 compat_size_t sigsetsize);
778asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
779 struct compat_siginfo __user *uinfo,
780 struct compat_timespec __user *uts, compat_size_t sigsetsize);
781asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
782 struct compat_siginfo __user *uinfo);
783
784
785
786asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
787asmlinkage long compat_sys_getrlimit(unsigned int resource,
788 struct compat_rlimit __user *rlim);
789asmlinkage long compat_sys_setrlimit(unsigned int resource,
790 struct compat_rlimit __user *rlim);
791asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
792
793
794asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
795 struct timezone __user *tz);
796asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
797 struct timezone __user *tz);
798asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
799
800
801asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
802
803
804asmlinkage long compat_sys_mq_open(const char __user *u_name,
805 int oflag, compat_mode_t mode,
806 struct compat_mq_attr __user *u_attr);
807asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
808 const char __user *u_msg_ptr,
809 compat_size_t msg_len, unsigned int msg_prio,
810 const struct compat_timespec __user *u_abs_timeout);
811asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
812 char __user *u_msg_ptr,
813 compat_size_t msg_len, unsigned int __user *u_msg_prio,
814 const struct compat_timespec __user *u_abs_timeout);
815asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
816 const struct compat_sigevent __user *u_notification);
817asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
818 const struct compat_mq_attr __user *u_mqstat,
819 struct compat_mq_attr __user *u_omqstat);
820
821
822asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr);
823asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
824 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
825asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
826 compat_ssize_t msgsz, int msgflg);
827
828
829asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
830asmlinkage long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
831 unsigned nsems, const struct compat_timespec __user *timeout);
832
833
834asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr);
835asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
836
837
838asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
839 unsigned flags, struct sockaddr __user *addr,
840 int __user *addrlen);
841asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
842 char __user *optval, unsigned int optlen);
843asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
844 char __user *optval, int __user *optlen);
845asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
846 unsigned flags);
847asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
848 unsigned int flags);
849
850
851
852
853asmlinkage long compat_sys_keyctl(u32 option,
854 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
855
856
857asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
858 const compat_uptr_t __user *envp);
859
860
861
862
863asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
864 compat_ulong_t mode,
865 compat_ulong_t __user *nmask,
866 compat_ulong_t maxnode, compat_ulong_t flags);
867asmlinkage long compat_sys_get_mempolicy(int __user *policy,
868 compat_ulong_t __user *nmask,
869 compat_ulong_t maxnode,
870 compat_ulong_t addr,
871 compat_ulong_t flags);
872asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
873 compat_ulong_t maxnode);
874asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
875 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
876 const compat_ulong_t __user *new_nodes);
877asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
878 __u32 __user *pages,
879 const int __user *nodes,
880 int __user *status,
881 int flags);
882
883asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid,
884 compat_pid_t pid, int sig,
885 struct compat_siginfo __user *uinfo);
886asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
887 unsigned vlen, unsigned int flags,
888 struct compat_timespec __user *timeout);
889asmlinkage long compat_sys_wait4(compat_pid_t pid,
890 compat_uint_t __user *stat_addr, int options,
891 struct compat_rusage __user *ru);
892asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
893 int, const char __user *);
894asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
895 struct file_handle __user *handle,
896 int flags);
897asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
898 struct compat_timex __user *tp);
899asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
900 unsigned vlen, unsigned int flags);
901asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
902 const struct compat_iovec __user *lvec,
903 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
904 compat_ulong_t riovcnt, compat_ulong_t flags);
905asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
906 const struct compat_iovec __user *lvec,
907 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
908 compat_ulong_t riovcnt, compat_ulong_t flags);
909asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
910 const compat_uptr_t __user *argv,
911 const compat_uptr_t __user *envp, int flags);
912asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
913 const struct compat_iovec __user *vec,
914 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
915asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
916 const struct compat_iovec __user *vec,
917 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
918#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
919asmlinkage long compat_sys_readv64v2(unsigned long fd,
920 const struct compat_iovec __user *vec,
921 unsigned long vlen, loff_t pos, rwf_t flags);
922#endif
923
924#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
925asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
926 const struct compat_iovec __user *vec,
927 unsigned long vlen, loff_t pos, rwf_t flags);
928#endif
929
930
931
932
933
934
935
936
937asmlinkage long compat_sys_open(const char __user *filename, int flags,
938 umode_t mode);
939asmlinkage long compat_sys_utimes(const char __user *filename,
940 struct compat_timeval __user *t);
941
942
943asmlinkage long compat_sys_signalfd(int ufd,
944 const compat_sigset_t __user *sigmask,
945 compat_size_t sigsetsize);
946
947
948asmlinkage long compat_sys_newstat(const char __user *filename,
949 struct compat_stat __user *statbuf);
950asmlinkage long compat_sys_newlstat(const char __user *filename,
951 struct compat_stat __user *statbuf);
952
953
954asmlinkage long compat_sys_time(compat_time_t __user *tloc);
955asmlinkage long compat_sys_utime(const char __user *filename,
956 struct compat_utimbuf __user *t);
957asmlinkage long compat_sys_futimesat(unsigned int dfd,
958 const char __user *filename,
959 struct compat_timeval __user *t);
960asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
961 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
962 struct compat_timeval __user *tvp);
963asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
964asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
965 unsigned flags);
966asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
967
968
969asmlinkage long compat_sys_old_readdir(unsigned int fd,
970 struct compat_old_linux_dirent __user *,
971 unsigned int count);
972
973
974asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
975
976
977asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
978
979
980#ifdef __ARCH_WANT_SYS_SIGPENDING
981asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
982#endif
983
984#ifdef __ARCH_WANT_SYS_SIGPROCMASK
985asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
986 compat_old_sigset_t __user *oset);
987#endif
988#ifdef CONFIG_COMPAT_OLD_SIGACTION
989asmlinkage long compat_sys_sigaction(int sig,
990 const struct compat_old_sigaction __user *act,
991 struct compat_old_sigaction __user *oact);
992#endif
993
994
995asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
996
997
998asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
999
1000#endif
1001
1002
1003
1004
1005
1006
1007
1008
1009#ifndef in_compat_syscall
1010static inline bool in_compat_syscall(void) { return is_compat_task(); }
1011#endif
1012
1013
1014
1015
1016
1017
1018
1019static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
1020{
1021 struct timeval tv;
1022 struct compat_timeval ctv;
1023
1024 tv = ns_to_timeval(nsec);
1025 ctv.tv_sec = tv.tv_sec;
1026 ctv.tv_usec = tv.tv_usec;
1027
1028 return ctv;
1029}
1030
1031
1032
1033
1034
1035
1036
1037int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz,
1038 struct compat_statfs64 __user * buf);
1039int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
1040 struct compat_statfs64 __user * buf);
1041
1042#else
1043
1044#define is_compat_task() (0)
1045#ifndef in_compat_syscall
1046static inline bool in_compat_syscall(void) { return false; }
1047#endif
1048
1049#endif
1050
1051
1052
1053
1054
1055
1056
1057#ifndef compat_ptr
1058static inline void __user *compat_ptr(compat_uptr_t uptr)
1059{
1060 return (void __user *)(unsigned long)uptr;
1061}
1062#endif
1063
1064static inline compat_uptr_t ptr_to_compat(void __user *uptr)
1065{
1066 return (u32)(unsigned long)uptr;
1067}
1068
1069#endif
1070