Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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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#include <linux/config.h>
8
9#ifdef CONFIG_COMPAT
10
11#include <linux/stat.h>
12#include <linux/param.h> /* for HZ */
13#include <linux/sem.h>
14
15#include <asm/compat.h>
16#include <asm/siginfo.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
48#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
49
50typedef struct {
51 compat_sigset_word sig[_COMPAT_NSIG_WORDS];
52} compat_sigset_t;
53
54extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
55extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
56extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
57
58struct compat_iovec {
59 compat_uptr_t iov_base;
60 compat_size_t iov_len;
61};
62
63struct compat_rlimit {
64 compat_ulong_t rlim_cur;
65 compat_ulong_t rlim_max;
66};
67
68struct compat_rusage {
69 struct compat_timeval ru_utime;
70 struct compat_timeval ru_stime;
71 compat_long_t ru_maxrss;
72 compat_long_t ru_ixrss;
73 compat_long_t ru_idrss;
74 compat_long_t ru_isrss;
75 compat_long_t ru_minflt;
76 compat_long_t ru_majflt;
77 compat_long_t ru_nswap;
78 compat_long_t ru_inblock;
79 compat_long_t ru_oublock;
80 compat_long_t ru_msgsnd;
81 compat_long_t ru_msgrcv;
82 compat_long_t ru_nsignals;
83 compat_long_t ru_nvcsw;
84 compat_long_t ru_nivcsw;
85};
86
87extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
88
89struct compat_siginfo;
90
91extern asmlinkage long compat_sys_waitid(int, compat_pid_t,
92 struct compat_siginfo __user *, int,
93 struct compat_rusage __user *);
94
95struct compat_dirent {
96 u32 d_ino;
97 compat_off_t d_off;
98 u16 d_reclen;
99 char d_name[256];
100};
101
102typedef union compat_sigval {
103 compat_int_t sival_int;
104 compat_uptr_t sival_ptr;
105} compat_sigval_t;
106
107#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
108
109typedef struct compat_sigevent {
110 compat_sigval_t sigev_value;
111 compat_int_t sigev_signo;
112 compat_int_t sigev_notify;
113 union {
114 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
115 compat_int_t _tid;
116
117 struct {
118 compat_uptr_t _function;
119 compat_uptr_t _attribute;
120 } _sigev_thread;
121 } _sigev_un;
122} compat_sigevent_t;
123
124
125long compat_sys_semctl(int first, int second, int third, void __user *uptr);
126long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
127long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
128 int version, void __user *uptr);
129long compat_sys_msgctl(int first, int second, void __user *uptr);
130long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
131 void __user *uptr);
132long compat_sys_shmctl(int first, int second, void __user *uptr);
133long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
134 unsigned nsems, const struct compat_timespec __user *timeout);
135asmlinkage long compat_sys_keyctl(u32 option,
136 u32 arg2, u32 arg3, u32 arg4, u32 arg5);
137
138asmlinkage ssize_t compat_sys_readv(unsigned long fd,
139 const struct compat_iovec __user *vec, unsigned long vlen);
140asmlinkage ssize_t compat_sys_writev(unsigned long fd,
141 const struct compat_iovec __user *vec, unsigned long vlen);
142
143int compat_do_execve(char * filename, compat_uptr_t __user *argv,
144 compat_uptr_t __user *envp, struct pt_regs * regs);
145
146asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
147 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
148 struct compat_timeval __user *tvp);
149
150#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
151
152#define BITS_TO_COMPAT_LONGS(bits) \
153 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
154
155long compat_get_bitmap(unsigned long *mask, compat_ulong_t __user *umask,
156 unsigned long bitmap_size);
157long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
158 unsigned long bitmap_size);
159int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
160int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
161int get_compat_sigevent(struct sigevent *event,
162 const struct compat_sigevent __user *u_event);
163
164static inline int compat_timeval_compare(struct compat_timeval *lhs,
165 struct compat_timeval *rhs)
166{
167 if (lhs->tv_sec < rhs->tv_sec)
168 return -1;
169 if (lhs->tv_sec > rhs->tv_sec)
170 return 1;
171 return lhs->tv_usec - rhs->tv_usec;
172}
173
174static inline int compat_timespec_compare(struct compat_timespec *lhs,
175 struct compat_timespec *rhs)
176{
177 if (lhs->tv_sec < rhs->tv_sec)
178 return -1;
179 if (lhs->tv_sec > rhs->tv_sec)
180 return 1;
181 return lhs->tv_nsec - rhs->tv_nsec;
182}
183
184#endif /* CONFIG_COMPAT */
185#endif /* _LINUX_COMPAT_H */