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
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
21 typedef __compat_uid32_t compat_uid_t;
22 typedef __compat_gid32_t compat_gid_t;
23
24 struct rusage;
25
26 struct compat_itimerspec {
27 struct compat_timespec it_interval;
28 struct compat_timespec it_value;
29 };
30
31 struct compat_utimbuf {
32 compat_time_t actime;
33 compat_time_t modtime;
34 };
35
36 struct compat_itimerval {
37 struct compat_timeval it_interval;
38 struct compat_timeval it_value;
39 };
40
41 struct 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
48 struct 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
76 typedef struct {
77 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
78 } compat_sigset_t;
79
80 extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
81 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
82 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
83
84 struct compat_iovec {
85 compat_uptr_t iov_base;
86 compat_size_t iov_len;
87 };
88
89 struct compat_rlimit {
90 compat_ulong_t rlim_cur;
91 compat_ulong_t rlim_max;
92 };
93
94 struct 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
113 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
114
115 struct compat_siginfo;
116
117 extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
118 struct compat_siginfo __user *, int,
119 struct compat_rusage __user *);
120
121 struct compat_dirent {
122 u32 d_ino;
123 compat_off_t d_off;
124 u16 d_reclen;
125 char d_name[256];
126 };
127
128 typedef 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
135 typedef 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
150 struct compat_robust_list {
151 compat_uptr_t next;
152 };
153
154 struct 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
160 extern void compat_exit_robust_list(struct task_struct *curr);
161
162 asmlinkage long
163 compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
164 compat_size_t len);
165 asmlinkage long
166 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
167 compat_size_t __user *len_ptr);
168
169 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
170 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
171 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
172 int version, void __user *uptr);
173 long compat_sys_msgctl(int first, int second, void __user *uptr);
174 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
175 void __user *uptr);
176 long compat_sys_shmctl(int first, int second, void __user *uptr);
177 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
178 unsigned nsems, const struct compat_timespec __user *timeout);
179 asmlinkage long compat_sys_keyctl(u32 option,
180 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
181
182 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
183 const struct compat_iovec __user *vec, unsigned long vlen);
184 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
185 const struct compat_iovec __user *vec, unsigned long vlen);
186
187 int compat_do_execve(char * filename, compat_uptr_t __user *argv,
188 compat_uptr_t __user *envp, struct pt_regs * regs);
189
190 asmlinkage 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 asmlinkage long compat_sys_wait4(compat_pid_t pid,
195 compat_uint_t __user *stat_addr, int options,
196 struct compat_rusage __user *ru);
197
198 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
199
200 #define BITS_TO_COMPAT_LONGS(bits) \
201 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
202
203 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
204 unsigned long bitmap_size);
205 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
206 unsigned long bitmap_size);
207 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
208 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
209 int get_compat_sigevent(struct sigevent *event,
210 const struct compat_sigevent __user *u_event);
211
212 static inline int compat_timeval_compare(struct compat_timeval *lhs,
213 struct compat_timeval *rhs)
214 {
215 if (lhs->tv_sec < rhs->tv_sec)
216 return -1;
217 if (lhs->tv_sec > rhs->tv_sec)
218 return 1;
219 return lhs->tv_usec - rhs->tv_usec;
220 }
221
222 static inline int compat_timespec_compare(struct compat_timespec *lhs,
223 struct compat_timespec *rhs)
224 {
225 if (lhs->tv_sec < rhs->tv_sec)
226 return -1;
227 if (lhs->tv_sec > rhs->tv_sec)
228 return 1;
229 return lhs->tv_nsec - rhs->tv_nsec;
230 }
231
232 extern int get_compat_itimerspec(struct itimerspec *dst,
233 const struct compat_itimerspec __user *src);
234 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
235 const struct itimerspec *src);
236
237 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
238
239 extern int compat_printk(const char *fmt, ...);
240 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
241
242 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
243 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
244 const compat_ulong_t __user *new_nodes);
245
246 extern int compat_ptrace_request(struct task_struct *child,
247 compat_long_t request,
248 compat_ulong_t addr, compat_ulong_t data);
249
250 #ifdef __ARCH_WANT_COMPAT_SYS_PTRACE
251 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
252 compat_ulong_t addr, compat_ulong_t data);
253 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
254 compat_long_t addr, compat_long_t data);
255 #endif /* __ARCH_WANT_COMPAT_SYS_PTRACE */
256
257 /*
258 * epoll (fs/eventpoll.c) compat bits follow ...
259 */
260 struct epoll_event;
261 #define compat_epoll_event epoll_event
262 asmlinkage long compat_sys_epoll_pwait(int epfd,
263 struct compat_epoll_event __user *events,
264 int maxevents, int timeout,
265 const compat_sigset_t __user *sigmask,
266 compat_size_t sigsetsize);
267
268 asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename,
269 struct compat_timespec __user *t, int flags);
270
271 asmlinkage long compat_sys_signalfd(int ufd,
272 const compat_sigset_t __user *sigmask,
273 compat_size_t sigsetsize);
274 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
275 const struct compat_itimerspec __user *utmr,
276 struct compat_itimerspec __user *otmr);
277 asmlinkage long compat_sys_timerfd_gettime(int ufd,
278 struct compat_itimerspec __user *otmr);
279
280 #endif /* CONFIG_COMPAT */
281 #endif /* _LINUX_COMPAT_H */
282
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