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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 :
16 : #include <asm/compat.h>
17 : #include <asm/siginfo.h>
18 : #include <asm/signal.h>
19 :
20 : #define compat_jiffies_to_clock_t(x) \
21 : (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
22 :
23 : typedef __compat_uid32_t compat_uid_t;
24 : typedef __compat_gid32_t compat_gid_t;
25 :
26 : struct rusage;
27 :
28 : struct compat_itimerspec {
29 : struct compat_timespec it_interval;
30 : struct compat_timespec it_value;
31 : };
32 :
33 : struct compat_utimbuf {
34 : compat_time_t actime;
35 : compat_time_t modtime;
36 : };
37 :
38 : struct compat_itimerval {
39 : struct compat_timeval it_interval;
40 : struct compat_timeval it_value;
41 : };
42 :
43 : struct compat_tms {
44 : compat_clock_t tms_utime;
45 : compat_clock_t tms_stime;
46 : compat_clock_t tms_cutime;
47 : compat_clock_t tms_cstime;
48 : };
49 :
50 : struct compat_timex {
51 : compat_uint_t modes;
52 : compat_long_t offset;
53 : compat_long_t freq;
54 : compat_long_t maxerror;
55 : compat_long_t esterror;
56 : compat_int_t status;
57 : compat_long_t constant;
58 : compat_long_t precision;
59 : compat_long_t tolerance;
60 : struct compat_timeval time;
61 : compat_long_t tick;
62 : compat_long_t ppsfreq;
63 : compat_long_t jitter;
64 : compat_int_t shift;
65 : compat_long_t stabil;
66 : compat_long_t jitcnt;
67 : compat_long_t calcnt;
68 : compat_long_t errcnt;
69 : compat_long_t stbcnt;
70 : compat_int_t tai;
71 :
72 : compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
73 : compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
74 : compat_int_t :32; compat_int_t :32; compat_int_t :32;
75 : };
76 :
77 : #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
78 :
79 : typedef struct {
80 : compat_sigset_word sig[_COMPAT_NSIG_WORDS];
81 : } compat_sigset_t;
82 :
83 : extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
84 : extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
85 :
86 : struct compat_iovec {
87 : compat_uptr_t iov_base;
88 : compat_size_t iov_len;
89 : };
90 :
91 : struct compat_rlimit {
92 : compat_ulong_t rlim_cur;
93 : compat_ulong_t rlim_max;
94 : };
95 :
96 : struct compat_rusage {
97 : struct compat_timeval ru_utime;
98 : struct compat_timeval ru_stime;
99 : compat_long_t ru_maxrss;
100 : compat_long_t ru_ixrss;
101 : compat_long_t ru_idrss;
102 : compat_long_t ru_isrss;
103 : compat_long_t ru_minflt;
104 : compat_long_t ru_majflt;
105 : compat_long_t ru_nswap;
106 : compat_long_t ru_inblock;
107 : compat_long_t ru_oublock;
108 : compat_long_t ru_msgsnd;
109 : compat_long_t ru_msgrcv;
110 : compat_long_t ru_nsignals;
111 : compat_long_t ru_nvcsw;
112 : compat_long_t ru_nivcsw;
113 : };
114 :
115 : extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
116 :
117 : struct compat_siginfo;
118 :
119 : extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
120 1 : struct compat_siginfo __user *, int,
121 : struct compat_rusage __user *);
122 :
123 : struct compat_dirent {
124 : u32 d_ino;
125 : compat_off_t d_off;
126 : u16 d_reclen;
127 : char d_name[256];
128 : };
129 :
130 : struct compat_ustat {
131 : compat_daddr_t f_tfree;
132 : compat_ino_t f_tinode;
133 : char f_fname[6];
134 : char f_fpack[6];
135 : };
136 :
137 : typedef union compat_sigval {
138 : compat_int_t sival_int;
139 : compat_uptr_t sival_ptr;
140 : } compat_sigval_t;
141 :
142 : #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
143 :
144 : typedef struct compat_sigevent {
145 : compat_sigval_t sigev_value;
146 : compat_int_t sigev_signo;
147 : compat_int_t sigev_notify;
148 : union {
149 : compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
150 : compat_int_t _tid;
151 :
152 : struct {
153 : compat_uptr_t _function;
154 : compat_uptr_t _attribute;
155 : } _sigev_thread;
156 : } _sigev_un;
157 : } compat_sigevent_t;
158 :
159 : struct compat_ifmap {
160 : compat_ulong_t mem_start;
161 : compat_ulong_t mem_end;
162 : unsigned short base_addr;
163 : unsigned char irq;
164 : unsigned char dma;
165 : unsigned char port;
166 : };
167 :
168 : struct compat_if_settings
169 : {
170 : unsigned int type; /* Type of physical device or protocol */
171 : unsigned int size; /* Size of the data allocated by the caller */
172 : compat_uptr_t ifs_ifsu; /* union of pointers */
173 : };
174 :
175 : struct compat_ifreq {
176 : union {
177 : char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
178 : } ifr_ifrn;
179 : union {
180 : struct sockaddr ifru_addr;
181 : struct sockaddr ifru_dstaddr;
182 : struct sockaddr ifru_broadaddr;
183 : struct sockaddr ifru_netmask;
184 : struct sockaddr ifru_hwaddr;
185 : short ifru_flags;
186 : compat_int_t ifru_ivalue;
187 : compat_int_t ifru_mtu;
188 : struct compat_ifmap ifru_map;
189 : char ifru_slave[IFNAMSIZ]; /* Just fits the size */
190 : char ifru_newname[IFNAMSIZ];
191 : compat_caddr_t ifru_data;
192 : struct compat_if_settings ifru_settings;
193 : } ifr_ifru;
194 : };
195 :
196 : struct compat_ifconf {
197 : compat_int_t ifc_len; /* size of buffer */
198 : compat_caddr_t ifcbuf;
199 : };
200 1 :
201 : struct compat_robust_list {
202 : compat_uptr_t next;
203 : };
204 1 :
205 : struct compat_robust_list_head {
206 : struct compat_robust_list list;
207 : compat_long_t futex_offset;
208 : compat_uptr_t list_op_pending;
209 : };
210 :
211 : extern void compat_exit_robust_list(struct task_struct *curr);
212 :
213 : asmlinkage long
214 : compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
215 : compat_size_t len);
216 : asmlinkage long
217 : compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
218 : compat_size_t __user *len_ptr);
219 :
220 : long compat_sys_semctl(int first, int second, int third, void __user *uptr);
221 : long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
222 : long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
223 : int version, void __user *uptr);
224 : long compat_sys_msgctl(int first, int second, void __user *uptr);
225 : long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
226 : void __user *uptr);
227 : long compat_sys_shmctl(int first, int second, void __user *uptr);
228 : long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
229 : unsigned nsems, const struct compat_timespec __user *timeout);
230 : asmlinkage long compat_sys_keyctl(u32 option,
231 : u32 arg2, u32 arg3, u32 arg4, u32 arg5);
232 : asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
233 :
234 : asmlinkage ssize_t compat_sys_readv(unsigned long fd,
235 : const struct compat_iovec __user *vec, unsigned long vlen);
236 : asmlinkage ssize_t compat_sys_writev(unsigned long fd,
237 : const struct compat_iovec __user *vec, unsigned long vlen);
238 : asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
239 : const struct compat_iovec __user *vec,
240 : unsigned long vlen, u32 pos_low, u32 pos_high);
241 : asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
242 : const struct compat_iovec __user *vec,
243 : unsigned long vlen, u32 pos_low, u32 pos_high);
244 :
245 : int compat_do_execve(char * filename, compat_uptr_t __user *argv,
246 : compat_uptr_t __user *envp, struct pt_regs * regs);
247 :
248 : asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
249 : compat_ulong_t __user *outp, compat_ulong_t __user *exp,
250 : struct compat_timeval __user *tvp);
251 :
252 : asmlinkage long compat_sys_wait4(compat_pid_t pid,
253 : compat_uint_t __user *stat_addr, int options,
254 : struct compat_rusage __user *ru);
255 :
256 : #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
257 :
258 : #define BITS_TO_COMPAT_LONGS(bits) \
259 : (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
260 :
261 : long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
262 : unsigned long bitmap_size);
263 : long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
264 : unsigned long bitmap_size);
265 : int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
266 : int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
267 : int get_compat_sigevent(struct sigevent *event,
268 : const struct compat_sigevent __user *u_event);
269 : long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
270 : struct compat_siginfo __user *uinfo);
271 :
272 : static inline int compat_timeval_compare(struct compat_timeval *lhs,
273 : struct compat_timeval *rhs)
274 : {
275 : if (lhs->tv_sec < rhs->tv_sec)
276 : return -1;
277 : if (lhs->tv_sec > rhs->tv_sec)
278 : return 1;
279 : return lhs->tv_usec - rhs->tv_usec;
280 : }
281 :
282 : static inline int compat_timespec_compare(struct compat_timespec *lhs,
283 : struct compat_timespec *rhs)
284 : {
285 : if (lhs->tv_sec < rhs->tv_sec)
286 : return -1;
287 : if (lhs->tv_sec > rhs->tv_sec)
288 : return 1;
289 : return lhs->tv_nsec - rhs->tv_nsec;
290 : }
291 :
292 : extern int get_compat_itimerspec(struct itimerspec *dst,
293 : const struct compat_itimerspec __user *src);
294 : extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
295 : const struct itimerspec *src);
296 :
297 : asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
298 : struct timezone __user *tz);
299 : asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
300 : struct timezone __user *tz);
301 :
302 : asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
303 :
304 : extern int compat_printk(const char *fmt, ...);
305 : extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
306 :
307 : asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
308 : compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
309 : const compat_ulong_t __user *new_nodes);
310 :
311 : extern int compat_ptrace_request(struct task_struct *child,
312 : compat_long_t request,
313 : compat_ulong_t addr, compat_ulong_t data);
314 :
315 : extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
316 : compat_ulong_t addr, compat_ulong_t data);
317 : asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
318 : compat_long_t addr, compat_long_t data);
319 :
320 : /*
321 : * epoll (fs/eventpoll.c) compat bits follow ...
322 : */
323 : struct epoll_event;
324 : #define compat_epoll_event epoll_event
325 : asmlinkage long compat_sys_epoll_pwait(int epfd,
326 : struct compat_epoll_event __user *events,
327 : int maxevents, int timeout,
328 : const compat_sigset_t __user *sigmask,
329 : compat_size_t sigsetsize);
330 :
331 : asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename,
332 : struct compat_timespec __user *t, int flags);
333 :
334 : asmlinkage long compat_sys_signalfd(int ufd,
335 : const compat_sigset_t __user *sigmask,
336 : compat_size_t sigsetsize);
337 : asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
338 : const struct compat_itimerspec __user *utmr,
339 : struct compat_itimerspec __user *otmr);
340 : asmlinkage long compat_sys_timerfd_gettime(int ufd,
341 : struct compat_itimerspec __user *otmr);
342 :
343 : asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
344 : __u32 __user *pages,
345 : const int __user *nodes,
346 : int __user *status,
347 : int flags);
348 : asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename,
349 : struct compat_timeval __user *t);
350 : asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename,
351 : struct compat_stat __user *statbuf,
352 : int flag);
353 : asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
354 : int flags, int mode);
355 :
356 : extern void __user *compat_alloc_user_space(unsigned long len);
357 :
358 : #endif /* CONFIG_COMPAT */
359 : #endif /* _LINUX_COMPAT_H */
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