Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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#ifdef CONFIG_COMPAT
9
10#include <linux/stat.h>
11#include <linux/param.h> /* for HZ */
12#include <linux/sem.h>
13#include <linux/socket.h>
14#include <linux/if.h>
15#include <linux/fs.h>
16#include <linux/aio_abi.h> /* for aio_context_t */
17
18#include <asm/compat.h>
19#include <asm/siginfo.h>
20#include <asm/signal.h>
21
22#define compat_jiffies_to_clock_t(x) \
23 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
24
25typedef __compat_uid32_t compat_uid_t;
26typedef __compat_gid32_t compat_gid_t;
27
28struct compat_sel_arg_struct;
29struct rusage;
30
31struct compat_itimerspec {
32 struct compat_timespec it_interval;
33 struct compat_timespec it_value;
34};
35
36struct compat_utimbuf {
37 compat_time_t actime;
38 compat_time_t modtime;
39};
40
41struct compat_itimerval {
42 struct compat_timeval it_interval;
43 struct compat_timeval it_value;
44};
45
46struct compat_tms {
47 compat_clock_t tms_utime;
48 compat_clock_t tms_stime;
49 compat_clock_t tms_cutime;
50 compat_clock_t tms_cstime;
51};
52
53struct compat_timex {
54 compat_uint_t modes;
55 compat_long_t offset;
56 compat_long_t freq;
57 compat_long_t maxerror;
58 compat_long_t esterror;
59 compat_int_t status;
60 compat_long_t constant;
61 compat_long_t precision;
62 compat_long_t tolerance;
63 struct compat_timeval time;
64 compat_long_t tick;
65 compat_long_t ppsfreq;
66 compat_long_t jitter;
67 compat_int_t shift;
68 compat_long_t stabil;
69 compat_long_t jitcnt;
70 compat_long_t calcnt;
71 compat_long_t errcnt;
72 compat_long_t stbcnt;
73 compat_int_t tai;
74
75 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
76 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
77 compat_int_t:32; compat_int_t:32; compat_int_t:32;
78};
79
80#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
81
82typedef struct {
83 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
84} compat_sigset_t;
85
86extern int get_compat_timespec(struct timespec *,
87 const struct compat_timespec __user *);
88extern int put_compat_timespec(const struct timespec *,
89 struct compat_timespec __user *);
90
91struct compat_iovec {
92 compat_uptr_t iov_base;
93 compat_size_t iov_len;
94};
95
96struct compat_rlimit {
97 compat_ulong_t rlim_cur;
98 compat_ulong_t rlim_max;
99};
100
101struct compat_rusage {
102 struct compat_timeval ru_utime;
103 struct compat_timeval ru_stime;
104 compat_long_t ru_maxrss;
105 compat_long_t ru_ixrss;
106 compat_long_t ru_idrss;
107 compat_long_t ru_isrss;
108 compat_long_t ru_minflt;
109 compat_long_t ru_majflt;
110 compat_long_t ru_nswap;
111 compat_long_t ru_inblock;
112 compat_long_t ru_oublock;
113 compat_long_t ru_msgsnd;
114 compat_long_t ru_msgrcv;
115 compat_long_t ru_nsignals;
116 compat_long_t ru_nvcsw;
117 compat_long_t ru_nivcsw;
118};
119
120extern int put_compat_rusage(const struct rusage *,
121 struct compat_rusage __user *);
122
123struct compat_siginfo;
124
125extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
126 struct compat_siginfo __user *, int,
127 struct compat_rusage __user *);
128
129struct compat_dirent {
130 u32 d_ino;
131 compat_off_t d_off;
132 u16 d_reclen;
133 char d_name[256];
134};
135
136struct compat_ustat {
137 compat_daddr_t f_tfree;
138 compat_ino_t f_tinode;
139 char f_fname[6];
140 char f_fpack[6];
141};
142
143typedef union compat_sigval {
144 compat_int_t sival_int;
145 compat_uptr_t sival_ptr;
146} compat_sigval_t;
147
148#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
149
150typedef struct compat_sigevent {
151 compat_sigval_t sigev_value;
152 compat_int_t sigev_signo;
153 compat_int_t sigev_notify;
154 union {
155 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
156 compat_int_t _tid;
157
158 struct {
159 compat_uptr_t _function;
160 compat_uptr_t _attribute;
161 } _sigev_thread;
162 } _sigev_un;
163} compat_sigevent_t;
164
165struct compat_ifmap {
166 compat_ulong_t mem_start;
167 compat_ulong_t mem_end;
168 unsigned short base_addr;
169 unsigned char irq;
170 unsigned char dma;
171 unsigned char port;
172};
173
174struct compat_if_settings {
175 unsigned int type; /* Type of physical device or protocol */
176 unsigned int size; /* Size of the data allocated by the caller */
177 compat_uptr_t ifs_ifsu; /* union of pointers */
178};
179
180struct compat_ifreq {
181 union {
182 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
183 } ifr_ifrn;
184 union {
185 struct sockaddr ifru_addr;
186 struct sockaddr ifru_dstaddr;
187 struct sockaddr ifru_broadaddr;
188 struct sockaddr ifru_netmask;
189 struct sockaddr ifru_hwaddr;
190 short ifru_flags;
191 compat_int_t ifru_ivalue;
192 compat_int_t ifru_mtu;
193 struct compat_ifmap ifru_map;
194 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
195 char ifru_newname[IFNAMSIZ];
196 compat_caddr_t ifru_data;
197 struct compat_if_settings ifru_settings;
198 } ifr_ifru;
199};
200
201struct compat_ifconf {
202 compat_int_t ifc_len; /* size of buffer */
203 compat_caddr_t ifcbuf;
204};
205
206struct compat_robust_list {
207 compat_uptr_t next;
208};
209
210struct compat_robust_list_head {
211 struct compat_robust_list list;
212 compat_long_t futex_offset;
213 compat_uptr_t list_op_pending;
214};
215
216struct compat_statfs;
217struct compat_statfs64;
218struct compat_old_linux_dirent;
219struct compat_linux_dirent;
220struct linux_dirent64;
221struct compat_msghdr;
222struct compat_mmsghdr;
223struct compat_sysinfo;
224struct compat_sysctl_args;
225struct compat_kexec_segment;
226struct compat_mq_attr;
227
228extern void compat_exit_robust_list(struct task_struct *curr);
229
230asmlinkage long
231compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
232 compat_size_t len);
233asmlinkage long
234compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
235 compat_size_t __user *len_ptr);
236
237long compat_sys_semctl(int first, int second, int third, void __user *uptr);
238long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
239long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
240 int version, void __user *uptr);
241long compat_sys_msgctl(int first, int second, void __user *uptr);
242long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
243 void __user *uptr);
244long compat_sys_shmctl(int first, int second, void __user *uptr);
245long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
246 unsigned nsems, const struct compat_timespec __user *timeout);
247asmlinkage long compat_sys_keyctl(u32 option,
248 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
249asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
250
251asmlinkage ssize_t compat_sys_readv(unsigned long fd,
252 const struct compat_iovec __user *vec, unsigned long vlen);
253asmlinkage ssize_t compat_sys_writev(unsigned long fd,
254 const struct compat_iovec __user *vec, unsigned long vlen);
255asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
256 const struct compat_iovec __user *vec,
257 unsigned long vlen, u32 pos_low, u32 pos_high);
258asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
259 const struct compat_iovec __user *vec,
260 unsigned long vlen, u32 pos_low, u32 pos_high);
261
262int compat_do_execve(char *filename, compat_uptr_t __user *argv,
263 compat_uptr_t __user *envp, struct pt_regs *regs);
264
265asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
266 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
267 struct compat_timeval __user *tvp);
268
269asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
270
271asmlinkage long compat_sys_wait4(compat_pid_t pid,
272 compat_uint_t __user *stat_addr, int options,
273 struct compat_rusage __user *ru);
274
275#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
276
277#define BITS_TO_COMPAT_LONGS(bits) \
278 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
279
280long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
281 unsigned long bitmap_size);
282long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
283 unsigned long bitmap_size);
284int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
285int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
286int get_compat_sigevent(struct sigevent *event,
287 const struct compat_sigevent __user *u_event);
288long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
289 struct compat_siginfo __user *uinfo);
290
291static inline int compat_timeval_compare(struct compat_timeval *lhs,
292 struct compat_timeval *rhs)
293{
294 if (lhs->tv_sec < rhs->tv_sec)
295 return -1;
296 if (lhs->tv_sec > rhs->tv_sec)
297 return 1;
298 return lhs->tv_usec - rhs->tv_usec;
299}
300
301static inline int compat_timespec_compare(struct compat_timespec *lhs,
302 struct compat_timespec *rhs)
303{
304 if (lhs->tv_sec < rhs->tv_sec)
305 return -1;
306 if (lhs->tv_sec > rhs->tv_sec)
307 return 1;
308 return lhs->tv_nsec - rhs->tv_nsec;
309}
310
311extern int get_compat_itimerspec(struct itimerspec *dst,
312 const struct compat_itimerspec __user *src);
313extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
314 const struct itimerspec *src);
315
316asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
317 struct timezone __user *tz);
318asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
319 struct timezone __user *tz);
320
321asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
322
323extern int compat_printk(const char *fmt, ...);
324extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
325
326asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
327 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
328 const compat_ulong_t __user *new_nodes);
329
330extern int compat_ptrace_request(struct task_struct *child,
331 compat_long_t request,
332 compat_ulong_t addr, compat_ulong_t data);
333
334extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
335 compat_ulong_t addr, compat_ulong_t data);
336asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
337 compat_long_t addr, compat_long_t data);
338
339/*
340 * epoll (fs/eventpoll.c) compat bits follow ...
341 */
342struct epoll_event;
343#define compat_epoll_event epoll_event
344asmlinkage long compat_sys_epoll_pwait(int epfd,
345 struct compat_epoll_event __user *events,
346 int maxevents, int timeout,
347 const compat_sigset_t __user *sigmask,
348 compat_size_t sigsetsize);
349
350asmlinkage long compat_sys_utime(const char __user *filename,
351 struct compat_utimbuf __user *t);
352asmlinkage long compat_sys_utimensat(unsigned int dfd,
353 const char __user *filename,
354 struct compat_timespec __user *t,
355 int flags);
356
357asmlinkage long compat_sys_time(compat_time_t __user *tloc);
358asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
359asmlinkage long compat_sys_signalfd(int ufd,
360 const compat_sigset_t __user *sigmask,
361 compat_size_t sigsetsize);
362asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
363 const struct compat_itimerspec __user *utmr,
364 struct compat_itimerspec __user *otmr);
365asmlinkage long compat_sys_timerfd_gettime(int ufd,
366 struct compat_itimerspec __user *otmr);
367
368asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
369 __u32 __user *pages,
370 const int __user *nodes,
371 int __user *status,
372 int flags);
373asmlinkage long compat_sys_futimesat(unsigned int dfd,
374 const char __user *filename,
375 struct compat_timeval __user *t);
376asmlinkage long compat_sys_utimes(const char __user *filename,
377 struct compat_timeval __user *t);
378asmlinkage long compat_sys_newstat(const char __user *filename,
379 struct compat_stat __user *statbuf);
380asmlinkage long compat_sys_newlstat(const char __user *filename,
381 struct compat_stat __user *statbuf);
382asmlinkage long compat_sys_newfstatat(unsigned int dfd,
383 const char __user *filename,
384 struct compat_stat __user *statbuf,
385 int flag);
386asmlinkage long compat_sys_newfstat(unsigned int fd,
387 struct compat_stat __user *statbuf);
388asmlinkage long compat_sys_statfs(const char __user *pathname,
389 struct compat_statfs __user *buf);
390asmlinkage long compat_sys_fstatfs(unsigned int fd,
391 struct compat_statfs __user *buf);
392asmlinkage long compat_sys_statfs64(const char __user *pathname,
393 compat_size_t sz,
394 struct compat_statfs64 __user *buf);
395asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
396 struct compat_statfs64 __user *buf);
397asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
398 unsigned long arg);
399asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
400 unsigned long arg);
401asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
402asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
403 unsigned long min_nr,
404 unsigned long nr,
405 struct io_event __user *events,
406 struct compat_timespec __user *timeout);
407asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
408 u32 __user *iocb);
409asmlinkage long compat_sys_mount(const char __user *dev_name,
410 const char __user *dir_name,
411 const char __user *type, unsigned long flags,
412 const void __user *data);
413asmlinkage long compat_sys_old_readdir(unsigned int fd,
414 struct compat_old_linux_dirent __user *,
415 unsigned int count);
416asmlinkage long compat_sys_getdents(unsigned int fd,
417 struct compat_linux_dirent __user *dirent,
418 unsigned int count);
419asmlinkage long compat_sys_getdents64(unsigned int fd,
420 struct linux_dirent64 __user *dirent,
421 unsigned int count);
422asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
423 unsigned int nr_segs, unsigned int flags);
424asmlinkage long compat_sys_open(const char __user *filename, int flags,
425 int mode);
426asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
427 int flags, int mode);
428asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
429 struct file_handle __user *handle,
430 int flags);
431asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
432 compat_ulong_t __user *outp,
433 compat_ulong_t __user *exp,
434 struct compat_timespec __user *tsp,
435 void __user *sig);
436asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
437 unsigned int nfds,
438 struct compat_timespec __user *tsp,
439 const compat_sigset_t __user *sigmask,
440 compat_size_t sigsetsize);
441asmlinkage long compat_sys_signalfd4(int ufd,
442 const compat_sigset_t __user *sigmask,
443 compat_size_t sigsetsize, int flags);
444asmlinkage long compat_sys_get_mempolicy(int __user *policy,
445 compat_ulong_t __user *nmask,
446 compat_ulong_t maxnode,
447 compat_ulong_t addr,
448 compat_ulong_t flags);
449asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask,
450 compat_ulong_t maxnode);
451asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
452 compat_ulong_t mode,
453 compat_ulong_t __user *nmask,
454 compat_ulong_t maxnode, compat_ulong_t flags);
455
456asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
457 char __user *optval, unsigned int optlen);
458asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
459 unsigned flags);
460asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
461 unsigned vlen, unsigned int flags);
462asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
463 unsigned int flags);
464asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
465 unsigned flags);
466asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
467 unsigned flags, struct sockaddr __user *addr,
468 int __user *addrlen);
469asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
470 unsigned vlen, unsigned int flags,
471 struct compat_timespec __user *timeout);
472asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
473 struct compat_timespec __user *rmtp);
474asmlinkage long compat_sys_getitimer(int which,
475 struct compat_itimerval __user *it);
476asmlinkage long compat_sys_setitimer(int which,
477 struct compat_itimerval __user *in,
478 struct compat_itimerval __user *out);
479asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
480asmlinkage long compat_sys_setrlimit(unsigned int resource,
481 struct compat_rlimit __user *rlim);
482asmlinkage long compat_sys_getrlimit(unsigned int resource,
483 struct compat_rlimit __user *rlim);
484asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
485asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
486 unsigned int len,
487 compat_ulong_t __user *user_mask_ptr);
488asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid,
489 unsigned int len,
490 compat_ulong_t __user *user_mask_ptr);
491asmlinkage long compat_sys_timer_create(clockid_t which_clock,
492 struct compat_sigevent __user *timer_event_spec,
493 timer_t __user *created_timer_id);
494asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags,
495 struct compat_itimerspec __user *new,
496 struct compat_itimerspec __user *old);
497asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
498 struct compat_itimerspec __user *setting);
499asmlinkage long compat_sys_clock_settime(clockid_t which_clock,
500 struct compat_timespec __user *tp);
501asmlinkage long compat_sys_clock_gettime(clockid_t which_clock,
502 struct compat_timespec __user *tp);
503asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
504 struct compat_timex __user *tp);
505asmlinkage long compat_sys_clock_getres(clockid_t which_clock,
506 struct compat_timespec __user *tp);
507asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
508 struct compat_timespec __user *rqtp,
509 struct compat_timespec __user *rmtp);
510asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese,
511 struct compat_siginfo __user *uinfo,
512 struct compat_timespec __user *uts, compat_size_t sigsetsize);
513asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
514 compat_size_t sigsetsize);
515asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
516asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
517 unsigned long arg);
518asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
519 struct compat_timespec __user *utime, u32 __user *uaddr2,
520 u32 val3);
521asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
522 char __user *optval, int __user *optlen);
523asmlinkage long compat_sys_kexec_load(unsigned long entry,
524 unsigned long nr_segments,
525 struct compat_kexec_segment __user *,
526 unsigned long flags);
527asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
528 const struct compat_mq_attr __user *u_mqstat,
529 struct compat_mq_attr __user *u_omqstat);
530asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
531 const struct compat_sigevent __user *u_notification);
532asmlinkage long compat_sys_mq_open(const char __user *u_name,
533 int oflag, compat_mode_t mode,
534 struct compat_mq_attr __user *u_attr);
535asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
536 const char __user *u_msg_ptr,
537 size_t msg_len, unsigned int msg_prio,
538 const struct compat_timespec __user *u_abs_timeout);
539asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
540 char __user *u_msg_ptr,
541 size_t msg_len, unsigned int __user *u_msg_prio,
542 const struct compat_timespec __user *u_abs_timeout);
543asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
544asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
545
546extern ssize_t compat_rw_copy_check_uvector(int type,
547 const struct compat_iovec __user *uvector,
548 unsigned long nr_segs,
549 unsigned long fast_segs, struct iovec *fast_pointer,
550 struct iovec **ret_pointer,
551 int check_access);
552
553extern void __user *compat_alloc_user_space(unsigned long len);
554
555asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
556 const struct compat_iovec __user *lvec,
557 unsigned long liovcnt, const struct compat_iovec __user *rvec,
558 unsigned long riovcnt, unsigned long flags);
559asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
560 const struct compat_iovec __user *lvec,
561 unsigned long liovcnt, const struct compat_iovec __user *rvec,
562 unsigned long riovcnt, unsigned long flags);
563
564#endif /* CONFIG_COMPAT */
565#endif /* _LINUX_COMPAT_H */