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 compat_int_t tai;
69
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 compat_int_t :32; compat_int_t :32; compat_int_t :32;
73};
74
75#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
76
77typedef struct {
78 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
79} compat_sigset_t;
80
81extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
82extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
83extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
84
85struct compat_iovec {
86 compat_uptr_t iov_base;
87 compat_size_t iov_len;
88};
89
90struct compat_rlimit {
91 compat_ulong_t rlim_cur;
92 compat_ulong_t rlim_max;
93};
94
95struct compat_rusage {
96 struct compat_timeval ru_utime;
97 struct compat_timeval ru_stime;
98 compat_long_t ru_maxrss;
99 compat_long_t ru_ixrss;
100 compat_long_t ru_idrss;
101 compat_long_t ru_isrss;
102 compat_long_t ru_minflt;
103 compat_long_t ru_majflt;
104 compat_long_t ru_nswap;
105 compat_long_t ru_inblock;
106 compat_long_t ru_oublock;
107 compat_long_t ru_msgsnd;
108 compat_long_t ru_msgrcv;
109 compat_long_t ru_nsignals;
110 compat_long_t ru_nvcsw;
111 compat_long_t ru_nivcsw;
112};
113
114extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
115
116struct compat_siginfo;
117
118extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
119 struct compat_siginfo __user *, int,
120 struct compat_rusage __user *);
121
122struct compat_dirent {
123 u32 d_ino;
124 compat_off_t d_off;
125 u16 d_reclen;
126 char d_name[256];
127};
128
129typedef union compat_sigval {
130 compat_int_t sival_int;
131 compat_uptr_t sival_ptr;
132} compat_sigval_t;
133
134#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
135
136typedef struct compat_sigevent {
137 compat_sigval_t sigev_value;
138 compat_int_t sigev_signo;
139 compat_int_t sigev_notify;
140 union {
141 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
142 compat_int_t _tid;
143
144 struct {
145 compat_uptr_t _function;
146 compat_uptr_t _attribute;
147 } _sigev_thread;
148 } _sigev_un;
149} compat_sigevent_t;
150
151struct compat_robust_list {
152 compat_uptr_t next;
153};
154
155struct compat_robust_list_head {
156 struct compat_robust_list list;
157 compat_long_t futex_offset;
158 compat_uptr_t list_op_pending;
159};
160
161extern void compat_exit_robust_list(struct task_struct *curr);
162
163asmlinkage long
164compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
165 compat_size_t len);
166asmlinkage long
167compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
168 compat_size_t __user *len_ptr);
169
170long compat_sys_semctl(int first, int second, int third, void __user *uptr);
171long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
172long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
173 int version, void __user *uptr);
174long compat_sys_msgctl(int first, int second, void __user *uptr);
175long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
176 void __user *uptr);
177long compat_sys_shmctl(int first, int second, void __user *uptr);
178long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
179 unsigned nsems, const struct compat_timespec __user *timeout);
180asmlinkage long compat_sys_keyctl(u32 option,
181 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
182
183asmlinkage ssize_t compat_sys_readv(unsigned long fd,
184 const struct compat_iovec __user *vec, unsigned long vlen);
185asmlinkage ssize_t compat_sys_writev(unsigned long fd,
186 const struct compat_iovec __user *vec, unsigned long vlen);
187
188int compat_do_execve(char * filename, compat_uptr_t __user *argv,
189 compat_uptr_t __user *envp, struct pt_regs * regs);
190
191asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
192 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
193 struct compat_timeval __user *tvp);
194
195asmlinkage long compat_sys_wait4(compat_pid_t pid,
196 compat_uint_t __user *stat_addr, int options,
197 struct compat_rusage __user *ru);
198
199#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
200
201#define BITS_TO_COMPAT_LONGS(bits) \
202 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
203
204long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
205 unsigned long bitmap_size);
206long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
207 unsigned long bitmap_size);
208int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
209int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
210int get_compat_sigevent(struct sigevent *event,
211 const struct compat_sigevent __user *u_event);
212
213static inline int compat_timeval_compare(struct compat_timeval *lhs,
214 struct compat_timeval *rhs)
215{
216 if (lhs->tv_sec < rhs->tv_sec)
217 return -1;
218 if (lhs->tv_sec > rhs->tv_sec)
219 return 1;
220 return lhs->tv_usec - rhs->tv_usec;
221}
222
223static inline int compat_timespec_compare(struct compat_timespec *lhs,
224 struct compat_timespec *rhs)
225{
226 if (lhs->tv_sec < rhs->tv_sec)
227 return -1;
228 if (lhs->tv_sec > rhs->tv_sec)
229 return 1;
230 return lhs->tv_nsec - rhs->tv_nsec;
231}
232
233extern int get_compat_itimerspec(struct itimerspec *dst,
234 const struct compat_itimerspec __user *src);
235extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
236 const struct itimerspec *src);
237
238asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
239
240extern int compat_printk(const char *fmt, ...);
241extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
242
243asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
244 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
245 const compat_ulong_t __user *new_nodes);
246
247extern int compat_ptrace_request(struct task_struct *child,
248 compat_long_t request,
249 compat_ulong_t addr, compat_ulong_t data);
250
251#ifdef __ARCH_WANT_COMPAT_SYS_PTRACE
252extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
253 compat_ulong_t addr, compat_ulong_t data);
254asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
255 compat_long_t addr, compat_long_t data);
256#endif
257
258
259
260
261struct epoll_event;
262#define compat_epoll_event epoll_event
263asmlinkage long compat_sys_epoll_pwait(int epfd,
264 struct compat_epoll_event __user *events,
265 int maxevents, int timeout,
266 const compat_sigset_t __user *sigmask,
267 compat_size_t sigsetsize);
268
269asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename,
270 struct compat_timespec __user *t, int flags);
271
272asmlinkage long compat_sys_signalfd(int ufd,
273 const compat_sigset_t __user *sigmask,
274 compat_size_t sigsetsize);
275asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
276 const struct compat_itimerspec __user *utmr,
277 struct compat_itimerspec __user *otmr);
278asmlinkage long compat_sys_timerfd_gettime(int ufd,
279 struct compat_itimerspec __user *otmr);
280
281#endif
282#endif
283
