Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
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 */
8
9#include <linux/types.h>
10
11#ifdef CONFIG_COMPAT
12
13#include <linux/stat.h>
14#include <linux/param.h> /* for HZ */
15#include <linux/sem.h>
16#include <linux/socket.h>
17#include <linux/if.h>
18#include <linux/fs.h>
19#include <linux/aio_abi.h> /* for aio_context_t */
20#include <linux/unistd.h>
21
22#include <asm/compat.h>
23#include <asm/siginfo.h>
24#include <asm/signal.h>
25
26#ifndef COMPAT_USE_64BIT_TIME
27#define COMPAT_USE_64BIT_TIME 0
28#endif
29
30#ifndef __SC_DELOUSE
31#define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v))
32#endif
33
34#define COMPAT_SYSCALL_DEFINE0(name) \
35 asmlinkage long compat_sys_##name(void)
36
37#define COMPAT_SYSCALL_DEFINE1(name, ...) \
38 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
39#define COMPAT_SYSCALL_DEFINE2(name, ...) \
40 COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
41#define COMPAT_SYSCALL_DEFINE3(name, ...) \
42 COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
43#define COMPAT_SYSCALL_DEFINE4(name, ...) \
44 COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
45#define COMPAT_SYSCALL_DEFINE5(name, ...) \
46 COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
47#define COMPAT_SYSCALL_DEFINE6(name, ...) \
48 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
49
50#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
51 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
52 __attribute__((alias(__stringify(compat_SyS##name)))); \
53 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
54 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
55 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
56 { \
57 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
58 } \
59 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
60
61#ifndef compat_user_stack_pointer
62#define compat_user_stack_pointer() current_user_stack_pointer()
63#endif
64#ifndef compat_sigaltstack /* we'll need that for MIPS */
65typedef struct compat_sigaltstack {
66 compat_uptr_t ss_sp;
67 int ss_flags;
68 compat_size_t ss_size;
69} compat_stack_t;
70#endif
71
72#define compat_jiffies_to_clock_t(x) \
73 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
74
75typedef __compat_uid32_t compat_uid_t;
76typedef __compat_gid32_t compat_gid_t;
77
78typedef compat_ulong_t compat_aio_context_t;
79
80struct compat_sel_arg_struct;
81struct rusage;
82
83struct compat_itimerspec {
84 struct compat_timespec it_interval;
85 struct compat_timespec it_value;
86};
87
88struct compat_utimbuf {
89 compat_time_t actime;
90 compat_time_t modtime;
91};
92
93struct compat_itimerval {
94 struct compat_timeval it_interval;
95 struct compat_timeval it_value;
96};
97
98struct itimerval;
99int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *);
100int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *);
101
102struct compat_tms {
103 compat_clock_t tms_utime;
104 compat_clock_t tms_stime;
105 compat_clock_t tms_cutime;
106 compat_clock_t tms_cstime;
107};
108
109struct compat_timex {
110 compat_uint_t modes;
111 compat_long_t offset;
112 compat_long_t freq;
113 compat_long_t maxerror;
114 compat_long_t esterror;
115 compat_int_t status;
116 compat_long_t constant;
117 compat_long_t precision;
118 compat_long_t tolerance;
119 struct compat_timeval time;
120 compat_long_t tick;
121 compat_long_t ppsfreq;
122 compat_long_t jitter;
123 compat_int_t shift;
124 compat_long_t stabil;
125 compat_long_t jitcnt;
126 compat_long_t calcnt;
127 compat_long_t errcnt;
128 compat_long_t stbcnt;
129 compat_int_t tai;
130
131 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
132 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
133 compat_int_t:32; compat_int_t:32; compat_int_t:32;
134};
135
136struct timex;
137int compat_get_timex(struct timex *, const struct compat_timex __user *);
138int compat_put_timex(struct compat_timex __user *, const struct timex *);
139
140#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
141
142typedef struct {
143 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
144} compat_sigset_t;
145
146struct compat_sigaction {
147#ifndef __ARCH_HAS_IRIX_SIGACTION
148 compat_uptr_t sa_handler;
149 compat_ulong_t sa_flags;
150#else
151 compat_uint_t sa_flags;
152 compat_uptr_t sa_handler;
153#endif
154#ifdef __ARCH_HAS_SA_RESTORER
155 compat_uptr_t sa_restorer;
156#endif
157 compat_sigset_t sa_mask __packed;
158};
159
160typedef union compat_sigval {
161 compat_int_t sival_int;
162 compat_uptr_t sival_ptr;
163} compat_sigval_t;
164
165typedef struct compat_siginfo {
166 int si_signo;
167#ifndef __ARCH_HAS_SWAPPED_SIGINFO
168 int si_errno;
169 int si_code;
170#else
171 int si_code;
172 int si_errno;
173#endif
174
175 union {
176 int _pad[128/sizeof(int) - 3];
177
178 /* kill() */
179 struct {
180 compat_pid_t _pid; /* sender's pid */
181 __compat_uid32_t _uid; /* sender's uid */
182 } _kill;
183
184 /* POSIX.1b timers */
185 struct {
186 compat_timer_t _tid; /* timer id */
187 int _overrun; /* overrun count */
188 compat_sigval_t _sigval; /* same as below */
189 } _timer;
190
191 /* POSIX.1b signals */
192 struct {
193 compat_pid_t _pid; /* sender's pid */
194 __compat_uid32_t _uid; /* sender's uid */
195 compat_sigval_t _sigval;
196 } _rt;
197
198 /* SIGCHLD */
199 struct {
200 compat_pid_t _pid; /* which child */
201 __compat_uid32_t _uid; /* sender's uid */
202 int _status; /* exit code */
203 compat_clock_t _utime;
204 compat_clock_t _stime;
205 } _sigchld;
206
207#ifdef CONFIG_X86_X32_ABI
208 /* SIGCHLD (x32 version) */
209 struct {
210 compat_pid_t _pid; /* which child */
211 __compat_uid32_t _uid; /* sender's uid */
212 int _status; /* exit code */
213 compat_s64 _utime;
214 compat_s64 _stime;
215 } _sigchld_x32;
216#endif
217
218 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
219 struct {
220 compat_uptr_t _addr; /* faulting insn/memory ref. */
221#ifdef __ARCH_SI_TRAPNO
222 int _trapno; /* TRAP # which caused the signal */
223#endif
224 union {
225 /*
226 * used when si_code=BUS_MCEERR_AR or
227 * used when si_code=BUS_MCEERR_AO
228 */
229 short int _addr_lsb; /* Valid LSB of the reported address. */
230 /* used when si_code=SEGV_BNDERR */
231 struct {
232 short _dummy_bnd;
233 compat_uptr_t _lower;
234 compat_uptr_t _upper;
235 } _addr_bnd;
236 /* used when si_code=SEGV_PKUERR */
237 struct {
238 short _dummy_pkey;
239 u32 _pkey;
240 } _addr_pkey;
241 };
242 } _sigfault;
243
244 /* SIGPOLL */
245 struct {
246 compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */
247 int _fd;
248 } _sigpoll;
249
250 struct {
251 compat_uptr_t _call_addr; /* calling user insn */
252 int _syscall; /* triggering system call number */
253 unsigned int _arch; /* AUDIT_ARCH_* of syscall */
254 } _sigsys;
255 } _sifields;
256} compat_siginfo_t;
257
258/*
259 * These functions operate on 32- or 64-bit specs depending on
260 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
261 */
262extern int compat_get_timespec(struct timespec *, const void __user *);
263extern int compat_put_timespec(const struct timespec *, void __user *);
264extern int compat_get_timeval(struct timeval *, const void __user *);
265extern int compat_put_timeval(const struct timeval *, void __user *);
266extern int compat_get_timespec64(struct timespec64 *, const void __user *);
267extern int compat_put_timespec64(const struct timespec64 *, void __user *);
268extern int get_compat_itimerspec64(struct itimerspec64 *its,
269 const struct compat_itimerspec __user *uits);
270extern int put_compat_itimerspec64(const struct itimerspec64 *its,
271 struct compat_itimerspec __user *uits);
272
273struct compat_iovec {
274 compat_uptr_t iov_base;
275 compat_size_t iov_len;
276};
277
278struct compat_rlimit {
279 compat_ulong_t rlim_cur;
280 compat_ulong_t rlim_max;
281};
282
283struct compat_rusage {
284 struct compat_timeval ru_utime;
285 struct compat_timeval ru_stime;
286 compat_long_t ru_maxrss;
287 compat_long_t ru_ixrss;
288 compat_long_t ru_idrss;
289 compat_long_t ru_isrss;
290 compat_long_t ru_minflt;
291 compat_long_t ru_majflt;
292 compat_long_t ru_nswap;
293 compat_long_t ru_inblock;
294 compat_long_t ru_oublock;
295 compat_long_t ru_msgsnd;
296 compat_long_t ru_msgrcv;
297 compat_long_t ru_nsignals;
298 compat_long_t ru_nvcsw;
299 compat_long_t ru_nivcsw;
300};
301
302extern int put_compat_rusage(const struct rusage *,
303 struct compat_rusage __user *);
304
305struct compat_siginfo;
306
307extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
308 struct compat_siginfo __user *, int,
309 struct compat_rusage __user *);
310
311struct compat_dirent {
312 u32 d_ino;
313 compat_off_t d_off;
314 u16 d_reclen;
315 char d_name[256];
316};
317
318struct compat_ustat {
319 compat_daddr_t f_tfree;
320 compat_ino_t f_tinode;
321 char f_fname[6];
322 char f_fpack[6];
323};
324
325#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
326
327typedef struct compat_sigevent {
328 compat_sigval_t sigev_value;
329 compat_int_t sigev_signo;
330 compat_int_t sigev_notify;
331 union {
332 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
333 compat_int_t _tid;
334
335 struct {
336 compat_uptr_t _function;
337 compat_uptr_t _attribute;
338 } _sigev_thread;
339 } _sigev_un;
340} compat_sigevent_t;
341
342struct compat_ifmap {
343 compat_ulong_t mem_start;
344 compat_ulong_t mem_end;
345 unsigned short base_addr;
346 unsigned char irq;
347 unsigned char dma;
348 unsigned char port;
349};
350
351struct compat_if_settings {
352 unsigned int type; /* Type of physical device or protocol */
353 unsigned int size; /* Size of the data allocated by the caller */
354 compat_uptr_t ifs_ifsu; /* union of pointers */
355};
356
357struct compat_ifreq {
358 union {
359 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
360 } ifr_ifrn;
361 union {
362 struct sockaddr ifru_addr;
363 struct sockaddr ifru_dstaddr;
364 struct sockaddr ifru_broadaddr;
365 struct sockaddr ifru_netmask;
366 struct sockaddr ifru_hwaddr;
367 short ifru_flags;
368 compat_int_t ifru_ivalue;
369 compat_int_t ifru_mtu;
370 struct compat_ifmap ifru_map;
371 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
372 char ifru_newname[IFNAMSIZ];
373 compat_caddr_t ifru_data;
374 struct compat_if_settings ifru_settings;
375 } ifr_ifru;
376};
377
378struct compat_ifconf {
379 compat_int_t ifc_len; /* size of buffer */
380 compat_caddr_t ifcbuf;
381};
382
383struct compat_robust_list {
384 compat_uptr_t next;
385};
386
387struct compat_robust_list_head {
388 struct compat_robust_list list;
389 compat_long_t futex_offset;
390 compat_uptr_t list_op_pending;
391};
392
393#ifdef CONFIG_COMPAT_OLD_SIGACTION
394struct compat_old_sigaction {
395 compat_uptr_t sa_handler;
396 compat_old_sigset_t sa_mask;
397 compat_ulong_t sa_flags;
398 compat_uptr_t sa_restorer;
399};
400#endif
401
402struct compat_keyctl_kdf_params {
403 compat_uptr_t hashname;
404 compat_uptr_t otherinfo;
405 __u32 otherinfolen;
406 __u32 __spare[8];
407};
408
409struct compat_statfs;
410struct compat_statfs64;
411struct compat_old_linux_dirent;
412struct compat_linux_dirent;
413struct linux_dirent64;
414struct compat_msghdr;
415struct compat_mmsghdr;
416struct compat_sysinfo;
417struct compat_sysctl_args;
418struct compat_kexec_segment;
419struct compat_mq_attr;
420struct compat_msgbuf;
421
422extern void compat_exit_robust_list(struct task_struct *curr);
423
424asmlinkage long
425compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
426 compat_size_t len);
427asmlinkage long
428compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
429 compat_size_t __user *len_ptr);
430
431asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
432asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
433asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
434asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
435 compat_ssize_t msgsz, int msgflg);
436asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
437 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
438long compat_sys_msgctl(int first, int second, void __user *uptr);
439long compat_sys_shmctl(int first, int second, void __user *uptr);
440long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
441 unsigned nsems, const struct compat_timespec __user *timeout);
442asmlinkage long compat_sys_keyctl(u32 option,
443 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
444asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
445
446asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
447 const struct compat_iovec __user *vec, compat_ulong_t vlen);
448asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
449 const struct compat_iovec __user *vec, compat_ulong_t vlen);
450asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
451 const struct compat_iovec __user *vec,
452 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
453asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
454 const struct compat_iovec __user *vec,
455 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
456asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
457 const struct compat_iovec __user *vec,
458 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
459asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
460 const struct compat_iovec __user *vec,
461 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
462
463#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
464asmlinkage long compat_sys_preadv64(unsigned long fd,
465 const struct compat_iovec __user *vec,
466 unsigned long vlen, loff_t pos);
467#endif
468
469#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
470asmlinkage long compat_sys_pwritev64(unsigned long fd,
471 const struct compat_iovec __user *vec,
472 unsigned long vlen, loff_t pos);
473#endif
474
475#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
476asmlinkage long compat_sys_readv64v2(unsigned long fd,
477 const struct compat_iovec __user *vec,
478 unsigned long vlen, loff_t pos, rwf_t flags);
479#endif
480
481#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
482asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
483 const struct compat_iovec __user *vec,
484 unsigned long vlen, loff_t pos, rwf_t flags);
485#endif
486
487asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
488
489asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
490 const compat_uptr_t __user *envp);
491asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
492 const compat_uptr_t __user *argv,
493 const compat_uptr_t __user *envp, int flags);
494
495asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
496 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
497 struct compat_timeval __user *tvp);
498
499asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
500
501asmlinkage long compat_sys_wait4(compat_pid_t pid,
502 compat_uint_t __user *stat_addr, int options,
503 struct compat_rusage __user *ru);
504
505#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
506
507#define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG)
508
509long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
510 unsigned long bitmap_size);
511long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
512 unsigned long bitmap_size);
513int copy_siginfo_from_user32(siginfo_t *to, const struct compat_siginfo __user *from);
514int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
515int get_compat_sigevent(struct sigevent *event,
516 const struct compat_sigevent __user *u_event);
517long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
518 struct compat_siginfo __user *uinfo);
519#ifdef CONFIG_COMPAT_OLD_SIGACTION
520asmlinkage long compat_sys_sigaction(int sig,
521 const struct compat_old_sigaction __user *act,
522 struct compat_old_sigaction __user *oact);
523#endif
524
525static inline int compat_timeval_compare(struct compat_timeval *lhs,
526 struct compat_timeval *rhs)
527{
528 if (lhs->tv_sec < rhs->tv_sec)
529 return -1;
530 if (lhs->tv_sec > rhs->tv_sec)
531 return 1;
532 return lhs->tv_usec - rhs->tv_usec;
533}
534
535static inline int compat_timespec_compare(struct compat_timespec *lhs,
536 struct compat_timespec *rhs)
537{
538 if (lhs->tv_sec < rhs->tv_sec)
539 return -1;
540 if (lhs->tv_sec > rhs->tv_sec)
541 return 1;
542 return lhs->tv_nsec - rhs->tv_nsec;
543}
544
545asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
546 struct timezone __user *tz);
547asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
548 struct timezone __user *tz);
549
550asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
551
552extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat);
553extern int put_compat_sigset(compat_sigset_t __user *compat,
554 const sigset_t *set, unsigned int size);
555
556asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
557 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
558 const compat_ulong_t __user *new_nodes);
559
560extern int compat_ptrace_request(struct task_struct *child,
561 compat_long_t request,
562 compat_ulong_t addr, compat_ulong_t data);
563
564extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
565 compat_ulong_t addr, compat_ulong_t data);
566asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
567 compat_long_t addr, compat_long_t data);
568
569asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
570/*
571 * epoll (fs/eventpoll.c) compat bits follow ...
572 */
573struct epoll_event; /* fortunately, this one is fixed-layout */
574asmlinkage long compat_sys_epoll_pwait(int epfd,
575 struct epoll_event __user *events,
576 int maxevents, int timeout,
577 const compat_sigset_t __user *sigmask,
578 compat_size_t sigsetsize);
579
580asmlinkage long compat_sys_utime(const char __user *filename,
581 struct compat_utimbuf __user *t);
582asmlinkage long compat_sys_utimensat(unsigned int dfd,
583 const char __user *filename,
584 struct compat_timespec __user *t,
585 int flags);
586
587asmlinkage long compat_sys_time(compat_time_t __user *tloc);
588asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
589asmlinkage long compat_sys_signalfd(int ufd,
590 const compat_sigset_t __user *sigmask,
591 compat_size_t sigsetsize);
592asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
593 const struct compat_itimerspec __user *utmr,
594 struct compat_itimerspec __user *otmr);
595asmlinkage long compat_sys_timerfd_gettime(int ufd,
596 struct compat_itimerspec __user *otmr);
597
598asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
599 __u32 __user *pages,
600 const int __user *nodes,
601 int __user *status,
602 int flags);
603asmlinkage long compat_sys_futimesat(unsigned int dfd,
604 const char __user *filename,
605 struct compat_timeval __user *t);
606asmlinkage long compat_sys_utimes(const char __user *filename,
607 struct compat_timeval __user *t);
608asmlinkage long compat_sys_newstat(const char __user *filename,
609 struct compat_stat __user *statbuf);
610asmlinkage long compat_sys_newlstat(const char __user *filename,
611 struct compat_stat __user *statbuf);
612asmlinkage long compat_sys_newfstatat(unsigned int dfd,
613 const char __user *filename,
614 struct compat_stat __user *statbuf,
615 int flag);
616asmlinkage long compat_sys_newfstat(unsigned int fd,
617 struct compat_stat __user *statbuf);
618asmlinkage long compat_sys_statfs(const char __user *pathname,
619 struct compat_statfs __user *buf);
620asmlinkage long compat_sys_fstatfs(unsigned int fd,
621 struct compat_statfs __user *buf);
622asmlinkage long compat_sys_statfs64(const char __user *pathname,
623 compat_size_t sz,
624 struct compat_statfs64 __user *buf);
625asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
626 struct compat_statfs64 __user *buf);
627asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
628 compat_ulong_t arg);
629asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
630 compat_ulong_t arg);
631asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
632asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id,
633 compat_long_t min_nr,
634 compat_long_t nr,
635 struct io_event __user *events,
636 struct compat_timespec __user *timeout);
637asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
638 u32 __user *iocb);
639asmlinkage long compat_sys_mount(const char __user *dev_name,
640 const char __user *dir_name,
641 const char __user *type, compat_ulong_t flags,
642 const void __user *data);
643asmlinkage long compat_sys_old_readdir(unsigned int fd,
644 struct compat_old_linux_dirent __user *,
645 unsigned int count);
646asmlinkage long compat_sys_getdents(unsigned int fd,
647 struct compat_linux_dirent __user *dirent,
648 unsigned int count);
649asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
650 unsigned int nr_segs, unsigned int flags);
651asmlinkage long compat_sys_open(const char __user *filename, int flags,
652 umode_t mode);
653asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
654 int flags, umode_t mode);
655asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
656 struct file_handle __user *handle,
657 int flags);
658asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
659asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
660asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
661 compat_ulong_t __user *outp,
662 compat_ulong_t __user *exp,
663 struct compat_timespec __user *tsp,
664 void __user *sig);
665asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
666 unsigned int nfds,
667 struct compat_timespec __user *tsp,
668 const compat_sigset_t __user *sigmask,
669 compat_size_t sigsetsize);
670asmlinkage long compat_sys_signalfd4(int ufd,
671 const compat_sigset_t __user *sigmask,
672 compat_size_t sigsetsize, int flags);
673asmlinkage long compat_sys_get_mempolicy(int __user *policy,
674 compat_ulong_t __user *nmask,
675 compat_ulong_t maxnode,
676 compat_ulong_t addr,
677 compat_ulong_t flags);
678asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
679 compat_ulong_t maxnode);
680asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
681 compat_ulong_t mode,
682 compat_ulong_t __user *nmask,
683 compat_ulong_t maxnode, compat_ulong_t flags);
684
685asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
686 char __user *optval, unsigned int optlen);
687asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
688 unsigned flags);
689asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
690 unsigned vlen, unsigned int flags);
691asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
692 unsigned int flags);
693asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
694 unsigned flags);
695asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
696 unsigned flags, struct sockaddr __user *addr,
697 int __user *addrlen);
698asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
699 unsigned vlen, unsigned int flags,
700 struct compat_timespec __user *timeout);
701asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
702 struct compat_timespec __user *rmtp);
703asmlinkage long compat_sys_getitimer(int which,
704 struct compat_itimerval __user *it);
705asmlinkage long compat_sys_setitimer(int which,
706 struct compat_itimerval __user *in,
707 struct compat_itimerval __user *out);
708asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
709asmlinkage long compat_sys_setrlimit(unsigned int resource,
710 struct compat_rlimit __user *rlim);
711asmlinkage long compat_sys_getrlimit(unsigned int resource,
712 struct compat_rlimit __user *rlim);
713asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
714asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
715 unsigned int len,
716 compat_ulong_t __user *user_mask_ptr);
717asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
718 unsigned int len,
719 compat_ulong_t __user *user_mask_ptr);
720asmlinkage long compat_sys_timer_create(clockid_t which_clock,
721 struct compat_sigevent __user *timer_event_spec,
722 timer_t __user *created_timer_id);
723asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
724 struct compat_itimerspec __user *new,
725 struct compat_itimerspec __user *old);
726asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
727 struct compat_itimerspec __user *setting);
728asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
729 struct compat_timespec __user *tp);
730asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
731 struct compat_timespec __user *tp);
732asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
733 struct compat_timex __user *tp);
734asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
735 struct compat_timespec __user *tp);
736asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
737 struct compat_timespec __user *rqtp,
738 struct compat_timespec __user *rmtp);
739asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
740 struct compat_siginfo __user *uinfo,
741 struct compat_timespec __user *uts, compat_size_t sigsetsize);
742asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
743 compat_size_t sigsetsize);
744asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
745 compat_sigset_t __user *oset,
746 compat_size_t sigsetsize);
747asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
748 compat_size_t sigsetsize);
749#ifndef CONFIG_ODD_RT_SIGACTION
750asmlinkage long compat_sys_rt_sigaction(int,
751 const struct compat_sigaction __user *,
752 struct compat_sigaction __user *,
753 compat_size_t);
754#endif
755asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
756 struct compat_siginfo __user *uinfo);
757asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
758asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
759 compat_ulong_t arg);
760asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
761 struct compat_timespec __user *utime, u32 __user *uaddr2,
762 u32 val3);
763asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
764 char __user *optval, int __user *optlen);
765asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
766 compat_ulong_t nr_segments,
767 struct compat_kexec_segment __user *,
768 compat_ulong_t flags);
769asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
770 const struct compat_mq_attr __user *u_mqstat,
771 struct compat_mq_attr __user *u_omqstat);
772asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
773 const struct compat_sigevent __user *u_notification);
774asmlinkage long compat_sys_mq_open(const char __user *u_name,
775 int oflag, compat_mode_t mode,
776 struct compat_mq_attr __user *u_attr);
777asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
778 const char __user *u_msg_ptr,
779 compat_size_t msg_len, unsigned int msg_prio,
780 const struct compat_timespec __user *u_abs_timeout);
781asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
782 char __user *u_msg_ptr,
783 compat_size_t msg_len, unsigned int __user *u_msg_prio,
784 const struct compat_timespec __user *u_abs_timeout);
785asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
786asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
787
788extern ssize_t compat_rw_copy_check_uvector(int type,
789 const struct compat_iovec __user *uvector,
790 unsigned long nr_segs,
791 unsigned long fast_segs, struct iovec *fast_pointer,
792 struct iovec **ret_pointer);
793
794extern void __user *compat_alloc_user_space(unsigned long len);
795
796asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
797 const struct compat_iovec __user *lvec,
798 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
799 compat_ulong_t riovcnt, compat_ulong_t flags);
800asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
801 const struct compat_iovec __user *lvec,
802 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
803 compat_ulong_t riovcnt, compat_ulong_t flags);
804
805asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
806 compat_off_t __user *offset, compat_size_t count);
807asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
808 compat_loff_t __user *offset, compat_size_t count);
809asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
810 compat_stack_t __user *uoss_ptr);
811
812#ifdef __ARCH_WANT_SYS_SIGPENDING
813asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
814#endif
815
816#ifdef __ARCH_WANT_SYS_SIGPROCMASK
817asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
818 compat_old_sigset_t __user *oset);
819#endif
820
821int compat_restore_altstack(const compat_stack_t __user *uss);
822int __compat_save_altstack(compat_stack_t __user *, unsigned long);
823#define compat_save_altstack_ex(uss, sp) do { \
824 compat_stack_t __user *__uss = uss; \
825 struct task_struct *t = current; \
826 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
827 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
828 put_user_ex(t->sas_ss_size, &__uss->ss_size); \
829 if (t->sas_ss_flags & SS_AUTODISARM) \
830 sas_ss_reset(t); \
831} while (0);
832
833asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
834 struct compat_timespec __user *interval);
835
836asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
837 int, const char __user *);
838
839asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2);
840
841/*
842 * For most but not all architectures, "am I in a compat syscall?" and
843 * "am I a compat task?" are the same question. For architectures on which
844 * they aren't the same question, arch code can override in_compat_syscall.
845 */
846
847#ifndef in_compat_syscall
848static inline bool in_compat_syscall(void) { return is_compat_task(); }
849#endif
850
851/**
852 * ns_to_compat_timeval - Compat version of ns_to_timeval
853 * @nsec: the nanoseconds value to be converted
854 *
855 * Returns the compat_timeval representation of the nsec parameter.
856 */
857static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
858{
859 struct timeval tv;
860 struct compat_timeval ctv;
861
862 tv = ns_to_timeval(nsec);
863 ctv.tv_sec = tv.tv_sec;
864 ctv.tv_usec = tv.tv_usec;
865
866 return ctv;
867}
868
869#else /* !CONFIG_COMPAT */
870
871#define is_compat_task() (0)
872static inline bool in_compat_syscall(void) { return false; }
873
874#endif /* CONFIG_COMPAT */
875
876#endif /* _LINUX_COMPAT_H */