1#ifndef _LINUX_COMPAT_H
2#define _LINUX_COMPAT_H
3
4
5
6
7
8#ifdef CONFIG_COMPAT
9
10#include <linux/stat.h>
11#include <linux/param.h>
12#include <linux/sem.h>
13
14#include <asm/compat.h>
15#include <asm/siginfo.h>
16#include <asm/signal.h>
17
18#define compat_jiffies_to_clock_t(x) \
19 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
20
21typedef __compat_uid32_t compat_uid_t;
22typedef __compat_gid32_t compat_gid_t;
23
24struct rusage;
25
26struct compat_itimerspec {
27 struct compat_timespec it_interval;
28 struct compat_timespec it_value;
29};
30
31struct compat_utimbuf {
32 compat_time_t actime;
33 compat_time_t modtime;
34};
35
36struct compat_itimerval {
37 struct compat_timeval it_interval;
38 struct compat_timeval it_value;
39};
40
41struct compat_tms {
42 compat_clock_t tms_utime;
43 compat_clock_t tms_stime;
44 compat_clock_t tms_cutime;
45 compat_clock_t tms_cstime;
46};
47
48struct compat_timex {
49 compat_uint_t modes;
50 compat_long_t offset;
51 compat_long_t freq;
52 compat_long_t maxerror;
53 compat_long_t esterror;
54 compat_int_t status;
55 compat_long_t constant;
56 compat_long_t precision;
57 compat_long_t tolerance;
58 struct compat_timeval time;
59 compat_long_t tick;
60 compat_long_t ppsfreq;
61 compat_long_t jitter;
62 compat_int_t shift;
63 compat_long_t stabil;
64 compat_long_t jitcnt;
65 compat_long_t calcnt;
66 compat_long_t errcnt;
67 compat_long_t stbcnt;
68
69 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
70 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
71 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
72};
73
74#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
75
76typedef struct {
77 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
78} compat_sigset_t;
79
80extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
81extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
82extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
83
84struct compat_iovec {
85 compat_uptr_t iov_base;
86 compat_size_t iov_len;
87};
88
89struct compat_rlimit {
90 compat_ulong_t rlim_cur;
91 compat_ulong_t rlim_max;
92};
93
94struct compat_rusage {
95 struct compat_timeval ru_utime;
96 struct compat_timeval ru_stime;
97 compat_long_t ru_maxrss;
98 compat_long_t ru_ixrss;
99 compat_long_t ru_idrss;
100 compat_long_t ru_isrss;
101 compat_long_t ru_minflt;
102 compat_long_t ru_majflt;
103 compat_long_t ru_nswap;
104 compat_long_t ru_inblock;
105 compat_long_t ru_oublock;
106 compat_long_t ru_msgsnd;
107 compat_long_t ru_msgrcv;
108 compat_long_t ru_nsignals;
109 compat_long_t ru_nvcsw;
110 compat_long_t ru_nivcsw;
111};
112
113extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
114
115struct compat_siginfo;
116
117extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
118 struct compat_siginfo __user *, int,
119 struct compat_rusage __user *);
120
121struct compat_dirent {
122 u32 d_ino;
123 compat_off_t d_off;
124 u16 d_reclen;
125 char d_name[256];
126};
127
128typedef union compat_sigval {
129 compat_int_t sival_int;
130 compat_uptr_t sival_ptr;
131} compat_sigval_t;
132
133#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
134
135typedef struct compat_sigevent {
136 compat_sigval_t sigev_value;
137 compat_int_t sigev_signo;
138 compat_int_t sigev_notify;
139 union {
140 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
141 compat_int_t _tid;
142
143 struct {
144 compat_uptr_t _function;
145 compat_uptr_t _attribute;
146 } _sigev_thread;
147 } _sigev_un;
148} compat_sigevent_t;
149
150struct compat_robust_list {
151 compat_uptr_t next;
152};
153
154struct compat_robust_list_head {
155 struct compat_robust_list list;
156 compat_long_t futex_offset;
157 compat_uptr_t list_op_pending;
158};
159
160extern void compat_exit_robust_list(struct task_struct *curr);
161
162asmlinkage long
163compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
164 compat_size_t len);
165asmlinkage long
166compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
167 compat_size_t __user *len_ptr);
168
169long compat_sys_semctl(int first, int second, int third, void __user *uptr);
170long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
171long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
172 int version, void __user *uptr);
173long compat_sys_msgctl(int first, int second, void __user *uptr);
174long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
175 void __user *uptr);
176long compat_sys_shmctl(int first, int second, void __user *uptr);
177long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
178 unsigned nsems, const struct compat_timespec __user *timeout);
179asmlinkage long compat_sys_keyctl(u32 option,
180 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
181
182asmlinkage ssize_t compat_sys_readv(unsigned long fd,
183 const struct compat_iovec __user *vec, unsigned long vlen);
184asmlinkage ssize_t compat_sys_writev(unsigned long fd,
185 const struct compat_iovec __user *vec, unsigned long vlen);
186
187int compat_do_execve(char * filename, compat_uptr_t __user *argv,
188 compat_uptr_t __user *envp, struct pt_regs * regs);
189
190asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
191 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
192 struct compat_timeval __user *tvp);
193
194#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
195
196#define BITS_TO_COMPAT_LONGS(bits) \
197 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
198
199long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
200 unsigned long bitmap_size);
201long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
202 unsigned long bitmap_size);
203int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
204int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
205int get_compat_sigevent(struct sigevent *event,
206 const struct compat_sigevent __user *u_event);
207
208static inline int compat_timeval_compare(struct compat_timeval *lhs,
209 struct compat_timeval *rhs)
210{
211 if (lhs->tv_sec < rhs->tv_sec)
212 return -1;
213 if (lhs->tv_sec > rhs->tv_sec)
214 return 1;
215 return lhs->tv_usec - rhs->tv_usec;
216}
217
218static inline int compat_timespec_compare(struct compat_timespec *lhs,
219 struct compat_timespec *rhs)
220{
221 if (lhs->tv_sec < rhs->tv_sec)
222 return -1;
223 if (lhs->tv_sec > rhs->tv_sec)
224 return 1;
225 return lhs->tv_nsec - rhs->tv_nsec;
226}
227
228extern int get_compat_itimerspec(struct itimerspec *dst,
229 const struct compat_itimerspec __user *src);
230extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
231 const struct itimerspec *src);
232
233asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
234
235extern int compat_printk(const char *fmt, ...);
236extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
237
238asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
239 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
240 const compat_ulong_t __user *new_nodes);
241
242
243
244
245#ifndef CONFIG_HAS_COMPAT_EPOLL_EVENT
246struct epoll_event;
247#define compat_epoll_event epoll_event
248#else
249asmlinkage long compat_sys_epoll_ctl(int epfd, int op, int fd,
250 struct compat_epoll_event __user *event);
251asmlinkage long compat_sys_epoll_wait(int epfd,
252 struct compat_epoll_event __user *events,
253 int maxevents, int timeout);
254#endif
255asmlinkage long compat_sys_epoll_pwait(int epfd,
256 struct compat_epoll_event __user *events,
257 int maxevents, int timeout,
258 const compat_sigset_t __user *sigmask,
259 compat_size_t sigsetsize);
260
261asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename,
262 struct compat_timespec __user *t, int flags);
263
264asmlinkage long compat_sys_signalfd(int ufd,
265 const compat_sigset_t __user *sigmask,
266 compat_size_t sigsetsize);
267asmlinkage long compat_sys_timerfd(int ufd, int clockid, int flags,
268 const struct compat_itimerspec __user *utmr);
269
270#endif
271#endif
272
