]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/compat.h
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:


ecb8dd261d3674aef841099fe2e06080a5427641
[mirror_ubuntu-bionic-kernel.git] / include / linux / compat.h
1 #ifndef _LINUX_COMPAT_H
2 #define _LINUX_COMPAT_H
3 /*
4 * These are the type definitions for the architecture specific
5 * syscall compatibility layer.
6 */
7
8 #include <linux/types.h>
9
10 #ifdef CONFIG_COMPAT
11
12 #include <linux/stat.h>
13 #include <linux/param.h> /* for HZ */
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> /* for aio_context_t */
19 #include <linux/unistd.h>
20
21 #include <asm/compat.h>
22 #include <asm/siginfo.h>
23 #include <asm/signal.h>
24
25 #ifndef COMPAT_USE_64BIT_TIME
26 #define COMPAT_USE_64BIT_TIME 0
27 #endif
28
29 #ifndef __SC_DELOUSE
30 #define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
31 #endif
32
33 #define COMPAT_SYSCALL_DEFINE0(name) \
34 asmlinkage long compat_sys_##name(void)
35
36 #define COMPAT_SYSCALL_DEFINE1(name, ...) \
37 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
38 #define COMPAT_SYSCALL_DEFINE2(name, ...) \
39 COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
40 #define COMPAT_SYSCALL_DEFINE3(name, ...) \
41 COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
42 #define COMPAT_SYSCALL_DEFINE4(name, ...) \
43 COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
44 #define COMPAT_SYSCALL_DEFINE5(name, ...) \
45 COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
46 #define COMPAT_SYSCALL_DEFINE6(name, ...) \
47 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
48
49 #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
50 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
51 __attribute__((alias(__stringify(compat_SyS##name)))); \
52 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
53 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
54 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
55 { \
56 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
57 } \
58 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
59
60 #ifndef compat_user_stack_pointer
61 #define compat_user_stack_pointer() current_user_stack_pointer()
62 #endif
63 #ifndef compat_sigaltstack /* we'll need that for MIPS */
64 typedef struct compat_sigaltstack {
65 compat_uptr_t ss_sp;
66 int ss_flags;
67 compat_size_t ss_size;
68 } compat_stack_t;
69 #endif
70
71 #define compat_jiffies_to_clock_t(x) \
72 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
73
74 typedef __compat_uid32_t compat_uid_t;
75 typedef __compat_gid32_t compat_gid_t;
76
77 typedef compat_ulong_t compat_aio_context_t;
78
79 struct compat_sel_arg_struct;
80 struct rusage;
81
82 struct compat_itimerspec {
83 struct compat_timespec it_interval;
84 struct compat_timespec it_value;
85 };
86
87 struct compat_utimbuf {
88 compat_time_t actime;
89 compat_time_t modtime;
90 };
91
92 struct compat_itimerval {
93 struct compat_timeval it_interval;
94 struct compat_timeval it_value;
95 };
96
97 struct compat_tms {
98 compat_clock_t tms_utime;
99 compat_clock_t tms_stime;
100 compat_clock_t tms_cutime;
101 compat_clock_t tms_cstime;
102 };
103
104 struct compat_timex {
105 compat_uint_t modes;
106 compat_long_t offset;
107 compat_long_t freq;
108 compat_long_t maxerror;
109 compat_long_t esterror;
110 compat_int_t status;
111 compat_long_t constant;
112 compat_long_t precision;
113 compat_long_t tolerance;
114 struct compat_timeval time;
115 compat_long_t tick;
116 compat_long_t ppsfreq;
117 compat_long_t jitter;
118 compat_int_t shift;
119 compat_long_t stabil;
120 compat_long_t jitcnt;
121 compat_long_t calcnt;
122 compat_long_t errcnt;
123 compat_long_t stbcnt;
124 compat_int_t tai;
125
126 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
127 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
128 compat_int_t:32; compat_int_t:32; compat_int_t:32;
129 };
130
131 struct timex;
132 int compat_get_timex(struct timex *, const struct compat_timex __user *);
133 int compat_put_timex(struct compat_timex __user *, const struct timex *);
134
135 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
136
137 typedef struct {
138 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
139 } compat_sigset_t;
140
141 struct 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
155 /*
156 * These functions operate on 32- or 64-bit specs depending on
157 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
158 */
159 extern int compat_get_timespec(struct timespec *, const void __user *);
160 extern int compat_put_timespec(const struct timespec *, void __user *);
161 extern int compat_get_timeval(struct timeval *, const void __user *);
162 extern int compat_put_timeval(const struct timeval *, void __user *);
163
164 /*
165 * This function convert a timespec if necessary and returns a *user
166 * space* pointer. If no conversion is necessary, it returns the
167 * initial pointer. NULL is a legitimate argument and will always
168 * output NULL.
169 */
170 extern int compat_convert_timespec(struct timespec __user **,
171 const void __user *);
172
173 struct compat_iovec {
174 compat_uptr_t iov_base;
175 compat_size_t iov_len;
176 };
177
178 struct compat_rlimit {
179 compat_ulong_t rlim_cur;
180 compat_ulong_t rlim_max;
181 };
182
183 struct compat_rusage {
184 struct compat_timeval ru_utime;
185 struct compat_timeval ru_stime;
186 compat_long_t ru_maxrss;
187 compat_long_t ru_ixrss;
188 compat_long_t ru_idrss;
189 compat_long_t ru_isrss;
190 compat_long_t ru_minflt;
191 compat_long_t ru_majflt;
192 compat_long_t ru_nswap;
193 compat_long_t ru_inblock;
194 compat_long_t ru_oublock;
195 compat_long_t ru_msgsnd;
196 compat_long_t ru_msgrcv;
197 compat_long_t ru_nsignals;
198 compat_long_t ru_nvcsw;
199 compat_long_t ru_nivcsw;
200 };
201
202 extern int put_compat_rusage(const struct rusage *,
203 struct compat_rusage __user *);
204
205 struct compat_siginfo;
206
207 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
208 struct compat_siginfo __user *, int,
209 struct compat_rusage __user *);
210
211 struct compat_dirent {
212 u32 d_ino;
213 compat_off_t d_off;
214 u16 d_reclen;
215 char d_name[256];
216 };
217
218 struct compat_ustat {
219 compat_daddr_t f_tfree;
220 compat_ino_t f_tinode;
221 char f_fname[6];
222 char f_fpack[6];
223 };
224
225 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
226
227 typedef struct compat_sigevent {
228 compat_sigval_t sigev_value;
229 compat_int_t sigev_signo;
230 compat_int_t sigev_notify;
231 union {
232 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
233 compat_int_t _tid;
234
235 struct {
236 compat_uptr_t _function;
237 compat_uptr_t _attribute;
238 } _sigev_thread;
239 } _sigev_un;
240 } compat_sigevent_t;
241
242 struct compat_ifmap {
243 compat_ulong_t mem_start;
244 compat_ulong_t mem_end;
245 unsigned short base_addr;
246 unsigned char irq;
247 unsigned char dma;
248 unsigned char port;
249 };
250
251 struct compat_if_settings {
252 unsigned int type; /* Type of physical device or protocol */
253 unsigned int size; /* Size of the data allocated by the caller */
254 compat_uptr_t ifs_ifsu; /* union of pointers */
255 };
256
257 struct compat_ifreq {
258 union {
259 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
260 } ifr_ifrn;
261 union {
262 struct sockaddr ifru_addr;
263 struct sockaddr ifru_dstaddr;
264 struct sockaddr ifru_broadaddr;
265 struct sockaddr ifru_netmask;
266 struct sockaddr ifru_hwaddr;
267 short ifru_flags;
268 compat_int_t ifru_ivalue;
269 compat_int_t ifru_mtu;
270 struct compat_ifmap ifru_map;
271 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
272 char ifru_newname[IFNAMSIZ];
273 compat_caddr_t ifru_data;
274 struct compat_if_settings ifru_settings;
275 } ifr_ifru;
276 };
277
278 struct compat_ifconf {
279 compat_int_t ifc_len; /* size of buffer */
280 compat_caddr_t ifcbuf;
281 };
282
283 struct compat_robust_list {
284 compat_uptr_t next;
285 };
286
287 struct compat_robust_list_head {
288 struct compat_robust_list list;
289 compat_long_t futex_offset;
290 compat_uptr_t list_op_pending;
291 };
292
293 #ifdef CONFIG_COMPAT_OLD_SIGACTION
294 struct compat_old_sigaction {
295 compat_uptr_t sa_handler;
296 compat_old_sigset_t sa_mask;
297 compat_ulong_t sa_flags;
298 compat_uptr_t sa_restorer;
299 };
300 #endif
301
302 struct compat_keyctl_kdf_params {
303 compat_uptr_t hashname;
304 compat_uptr_t otherinfo;
305 __u32 otherinfolen;
306 __u32 __spare[8];
307 };
308
309 struct compat_statfs;
310 struct compat_statfs64;
311 struct compat_old_linux_dirent;
312 struct compat_linux_dirent;
313 struct linux_dirent64;
314 struct compat_msghdr;
315 struct compat_mmsghdr;
316 struct compat_sysinfo;
317 struct compat_sysctl_args;
318 struct compat_kexec_segment;
319 struct compat_mq_attr;
320 struct compat_msgbuf;
321
322 extern void compat_exit_robust_list(struct task_struct *curr);
323
324 asmlinkage long
325 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
326 compat_size_t len);
327 asmlinkage long
328 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
329 compat_size_t __user *len_ptr);
330
331 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
332 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
333 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
334 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
335 compat_ssize_t msgsz, int msgflg);
336 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
337 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
338 long compat_sys_msgctl(int first, int second, void __user *uptr);
339 long compat_sys_shmctl(int first, int second, void __user *uptr);
340 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
341 unsigned nsems, const struct compat_timespec __user *timeout);
342 asmlinkage long compat_sys_keyctl(u32 option,
343 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
344 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
345
346 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
347 const struct compat_iovec __user *vec, compat_ulong_t vlen);
348 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
349 const struct compat_iovec __user *vec, compat_ulong_t vlen);
350 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
351 const struct compat_iovec __user *vec,
352 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
353 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
354 const struct compat_iovec __user *vec,
355 compat_ulong_t vlen, u32 pos_low, u32 pos_high);
356 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
357 const struct compat_iovec __user *vec,
358 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
359 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
360 const struct compat_iovec __user *vec,
361 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
362
363 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
364 asmlinkage long compat_sys_preadv64(unsigned long fd,
365 const struct compat_iovec __user *vec,
366 unsigned long vlen, loff_t pos);
367 #endif
368
369 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
370 asmlinkage long compat_sys_pwritev64(unsigned long fd,
371 const struct compat_iovec __user *vec,
372 unsigned long vlen, loff_t pos);
373 #endif
374
375 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
376
377 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
378 const compat_uptr_t __user *envp);
379 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
380 const compat_uptr_t __user *argv,
381 const compat_uptr_t __user *envp, int flags);
382
383 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
384 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
385 struct compat_timeval __user *tvp);
386
387 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
388
389 asmlinkage long compat_sys_wait4(compat_pid_t pid,
390 compat_uint_t __user *stat_addr, int options,
391 struct compat_rusage __user *ru);
392
393 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
394
395 #define BITS_TO_COMPAT_LONGS(bits) \
396 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
397
398 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
399 unsigned long bitmap_size);
400 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
401 unsigned long bitmap_size);
402 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
403 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
404 int get_compat_sigevent(struct sigevent *event,
405 const struct compat_sigevent __user *u_event);
406 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
407 struct compat_siginfo __user *uinfo);
408 #ifdef CONFIG_COMPAT_OLD_SIGACTION
409 asmlinkage long compat_sys_sigaction(int sig,
410 const struct compat_old_sigaction __user *act,
411 struct compat_old_sigaction __user *oact);
412 #endif
413
414 static inline int compat_timeval_compare(struct compat_timeval *lhs,
415 struct compat_timeval *rhs)
416 {
417 if (lhs->tv_sec < rhs->tv_sec)
418 return -1;
419 if (lhs->tv_sec > rhs->tv_sec)
420 return 1;
421 return lhs->tv_usec - rhs->tv_usec;
422 }
423
424 static inline int compat_timespec_compare(struct compat_timespec *lhs,
425 struct compat_timespec *rhs)
426 {
427 if (lhs->tv_sec < rhs->tv_sec)
428 return -1;
429 if (lhs->tv_sec > rhs->tv_sec)
430 return 1;
431 return lhs->tv_nsec - rhs->tv_nsec;
432 }
433
434 extern int get_compat_itimerspec(struct itimerspec *dst,
435 const struct compat_itimerspec __user *src);
436 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
437 const struct itimerspec *src);
438
439 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
440 struct timezone __user *tz);
441 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
442 struct timezone __user *tz);
443
444 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
445
446 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat);
447 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set);
448
449 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
450 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
451 const compat_ulong_t __user *new_nodes);
452
453 extern int compat_ptrace_request(struct task_struct *child,
454 compat_long_t request,
455 compat_ulong_t addr, compat_ulong_t data);
456
457 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
458 compat_ulong_t addr, compat_ulong_t data);
459 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
460 compat_long_t addr, compat_long_t data);
461
462 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
463 /*
464 * epoll (fs/eventpoll.c) compat bits follow ...
465 */
466 struct epoll_event; /* fortunately, this one is fixed-layout */
467 asmlinkage long compat_sys_epoll_pwait(int epfd,
468 struct epoll_event __user *events,
469 int maxevents, int timeout,
470 const compat_sigset_t __user *sigmask,
471 compat_size_t sigsetsize);
472
473 asmlinkage long compat_sys_utime(const char __user *filename,
474 struct compat_utimbuf __user *t);
475 asmlinkage long compat_sys_utimensat(unsigned int dfd,
476 const char __user *filename,
477 struct compat_timespec __user *t,
478 int flags);
479
480 asmlinkage long compat_sys_time(compat_time_t __user *tloc);
481 asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
482 asmlinkage long compat_sys_signalfd(int ufd,
483 const compat_sigset_t __user *sigmask,
484 compat_size_t sigsetsize);
485 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
486 const struct compat_itimerspec __user *utmr,
487 struct compat_itimerspec __user *otmr);
488 asmlinkage long compat_sys_timerfd_gettime(int ufd,
489 struct compat_itimerspec __user *otmr);
490
491 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
492 __u32 __user *pages,
493 const int __user *nodes,
494 int __user *status,
495 int flags);
496 asmlinkage long compat_sys_futimesat(unsigned int dfd,
497 const char __user *filename,
498 struct compat_timeval __user *t);
499 asmlinkage long compat_sys_utimes(const char __user *filename,
500 struct compat_timeval __user *t);
501 asmlinkage long compat_sys_newstat(const char __user *filename,
502 struct compat_stat __user *statbuf);
503 asmlinkage long compat_sys_newlstat(const char __user *filename,
504 struct compat_stat __user *statbuf);
505 asmlinkage long compat_sys_newfstatat(unsigned int dfd,
506 const char __user *filename,
507 struct compat_stat __user *statbuf,
508 int flag);
509 asmlinkage long compat_sys_newfstat(unsigned int fd,
510 struct compat_stat __user *statbuf);
511 asmlinkage long compat_sys_statfs(const char __user *pathname,
512 struct compat_statfs __user *buf);
513 asmlinkage long compat_sys_fstatfs(unsigned int fd,
514 struct compat_statfs __user *buf);
515 asmlinkage long compat_sys_statfs64(const char __user *pathname,
516 compat_size_t sz,
517 struct compat_statfs64 __user *buf);
518 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
519 struct compat_statfs64 __user *buf);
520 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
521 compat_ulong_t arg);
522 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
523 compat_ulong_t arg);
524 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
525 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id,
526 compat_long_t min_nr,
527 compat_long_t nr,
528 struct io_event __user *events,
529 struct compat_timespec __user *timeout);
530 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
531 u32 __user *iocb);
532 asmlinkage long compat_sys_mount(const char __user *dev_name,
533 const char __user *dir_name,
534 const char __user *type, compat_ulong_t flags,
535 const void __user *data);
536 asmlinkage long compat_sys_old_readdir(unsigned int fd,
537 struct compat_old_linux_dirent __user *,
538 unsigned int count);
539 asmlinkage long compat_sys_getdents(unsigned int fd,
540 struct compat_linux_dirent __user *dirent,
541 unsigned int count);
542 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
543 unsigned int nr_segs, unsigned int flags);
544 asmlinkage long compat_sys_open(const char __user *filename, int flags,
545 umode_t mode);
546 asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
547 int flags, umode_t mode);
548 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
549 struct file_handle __user *handle,
550 int flags);
551 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
552 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
553 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
554 compat_ulong_t __user *outp,
555 compat_ulong_t __user *exp,
556 struct compat_timespec __user *tsp,
557 void __user *sig);
558 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
559 unsigned int nfds,
560 struct compat_timespec __user *tsp,
561 const compat_sigset_t __user *sigmask,
562 compat_size_t sigsetsize);
563 asmlinkage long compat_sys_signalfd4(int ufd,
564 const compat_sigset_t __user *sigmask,
565 compat_size_t sigsetsize, int flags);
566 asmlinkage long compat_sys_get_mempolicy(int __user *policy,
567 compat_ulong_t __user *nmask,
568 compat_ulong_t maxnode,
569 compat_ulong_t addr,
570 compat_ulong_t flags);
571 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
572 compat_ulong_t maxnode);
573 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
574 compat_ulong_t mode,
575 compat_ulong_t __user *nmask,
576 compat_ulong_t maxnode, compat_ulong_t flags);
577
578 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
579 char __user *optval, unsigned int optlen);
580 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
581 unsigned flags);
582 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
583 unsigned vlen, unsigned int flags);
584 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
585 unsigned int flags);
586 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
587 unsigned flags);
588 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
589 unsigned flags, struct sockaddr __user *addr,
590 int __user *addrlen);
591 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
592 unsigned vlen, unsigned int flags,
593 struct compat_timespec __user *timeout);
594 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
595 struct compat_timespec __user *rmtp);
596 asmlinkage long compat_sys_getitimer(int which,
597 struct compat_itimerval __user *it);
598 asmlinkage long compat_sys_setitimer(int which,
599 struct compat_itimerval __user *in,
600 struct compat_itimerval __user *out);
601 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
602 asmlinkage long compat_sys_setrlimit(unsigned int resource,
603 struct compat_rlimit __user *rlim);
604 asmlinkage long compat_sys_getrlimit(unsigned int resource,
605 struct compat_rlimit __user *rlim);
606 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
607 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
608 unsigned int len,
609 compat_ulong_t __user *user_mask_ptr);
610 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
611 unsigned int len,
612 compat_ulong_t __user *user_mask_ptr);
613 asmlinkage long compat_sys_timer_create(clockid_t which_clock,
614 struct compat_sigevent __user *timer_event_spec,
615 timer_t __user *created_timer_id);
616 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
617 struct compat_itimerspec __user *new,
618 struct compat_itimerspec __user *old);
619 asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
620 struct compat_itimerspec __user *setting);
621 asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
622 struct compat_timespec __user *tp);
623 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
624 struct compat_timespec __user *tp);
625 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
626 struct compat_timex __user *tp);
627 asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
628 struct compat_timespec __user *tp);
629 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
630 struct compat_timespec __user *rqtp,
631 struct compat_timespec __user *rmtp);
632 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
633 struct compat_siginfo __user *uinfo,
634 struct compat_timespec __user *uts, compat_size_t sigsetsize);
635 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
636 compat_size_t sigsetsize);
637 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
638 compat_sigset_t __user *oset,
639 compat_size_t sigsetsize);
640 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
641 compat_size_t sigsetsize);
642 #ifndef CONFIG_ODD_RT_SIGACTION
643 asmlinkage long compat_sys_rt_sigaction(int,
644 const struct compat_sigaction __user *,
645 struct compat_sigaction __user *,
646 compat_size_t);
647 #endif
648 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
649 struct compat_siginfo __user *uinfo);
650 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
651 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
652 compat_ulong_t arg);
653 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
654 struct compat_timespec __user *utime, u32 __user *uaddr2,
655 u32 val3);
656 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
657 char __user *optval, int __user *optlen);
658 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
659 compat_ulong_t nr_segments,
660 struct compat_kexec_segment __user *,
661 compat_ulong_t flags);
662 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
663 const struct compat_mq_attr __user *u_mqstat,
664 struct compat_mq_attr __user *u_omqstat);
665 asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
666 const struct compat_sigevent __user *u_notification);
667 asmlinkage long compat_sys_mq_open(const char __user *u_name,
668 int oflag, compat_mode_t mode,
669 struct compat_mq_attr __user *u_attr);
670 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
671 const char __user *u_msg_ptr,
672 compat_size_t msg_len, unsigned int msg_prio,
673 const struct compat_timespec __user *u_abs_timeout);
674 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
675 char __user *u_msg_ptr,
676 compat_size_t msg_len, unsigned int __user *u_msg_prio,
677 const struct compat_timespec __user *u_abs_timeout);
678 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
679 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
680
681 extern ssize_t compat_rw_copy_check_uvector(int type,
682 const struct compat_iovec __user *uvector,
683 unsigned long nr_segs,
684 unsigned long fast_segs, struct iovec *fast_pointer,
685 struct iovec **ret_pointer);
686
687 extern void __user *compat_alloc_user_space(unsigned long len);
688
689 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
690 const struct compat_iovec __user *lvec,
691 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
692 compat_ulong_t riovcnt, compat_ulong_t flags);
693 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
694 const struct compat_iovec __user *lvec,
695 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
696 compat_ulong_t riovcnt, compat_ulong_t flags);
697
698 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
699 compat_off_t __user *offset, compat_size_t count);
700 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
701 compat_loff_t __user *offset, compat_size_t count);
702 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
703 compat_stack_t __user *uoss_ptr);
704
705 #ifdef __ARCH_WANT_SYS_SIGPENDING
706 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
707 #endif
708
709 #ifdef __ARCH_WANT_SYS_SIGPROCMASK
710 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
711 compat_old_sigset_t __user *oset);
712 #endif
713
714 int compat_restore_altstack(const compat_stack_t __user *uss);
715 int __compat_save_altstack(compat_stack_t __user *, unsigned long);
716 #define compat_save_altstack_ex(uss, sp) do { \
717 compat_stack_t __user *__uss = uss; \
718 struct task_struct *t = current; \
719 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
720 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
721 put_user_ex(t->sas_ss_size, &__uss->ss_size); \
722 if (t->sas_ss_flags & SS_AUTODISARM) \
723 sas_ss_reset(t); \
724 } while (0);
725
726 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
727 struct compat_timespec __user *interval);
728
729 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
730 int, const char __user *);
731
732 asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2);
733
734 /*
735 * For most but not all architectures, "am I in a compat syscall?" and
736 * "am I a compat task?" are the same question. For architectures on which
737 * they aren't the same question, arch code can override in_compat_syscall.
738 */
739
740 #ifndef in_compat_syscall
741 static inline bool in_compat_syscall(void) { return is_compat_task(); }
742 #endif
743
744 /**
745 * ns_to_compat_timeval - Compat version of ns_to_timeval
746 * @nsec: the nanoseconds value to be converted
747 *
748 * Returns the compat_timeval representation of the nsec parameter.
749 */
750 static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
751 {
752 struct timeval tv;
753 struct compat_timeval ctv;
754
755 tv = ns_to_timeval(nsec);
756 ctv.tv_sec = tv.tv_sec;
757 ctv.tv_usec = tv.tv_usec;
758
759 return ctv;
760 }
761
762 #else /* !CONFIG_COMPAT */
763
764 #define is_compat_task() (0)
765 static inline bool in_compat_syscall(void) { return false; }
766
767 #endif /* CONFIG_COMPAT */
768
769 #endif /* _LINUX_COMPAT_H */
ubuntu-bionic-kernel mirror