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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_COMPAT_H
2#define _ASM_COMPAT_H
3/*
4 * Architecture specific compatibility types
5 */
Ralf Baechle4302e5d2009-03-05 11:45:48 +01006#include <linux/thread_info.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07007#include <linux/types.h>
8#include <asm/page.h>
Ralf Baechleb7237822006-12-11 00:43:58 +00009#include <asm/ptrace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010
11#define COMPAT_USER_HZ 100
12
13typedef u32 compat_size_t;
14typedef s32 compat_ssize_t;
15typedef s32 compat_time_t;
16typedef s32 compat_clock_t;
17typedef s32 compat_suseconds_t;
18
19typedef s32 compat_pid_t;
Ralf Baechle4ee13032005-10-29 19:32:40 +010020typedef s32 __compat_uid_t;
21typedef s32 __compat_gid_t;
22typedef __compat_uid_t __compat_uid32_t;
23typedef __compat_gid_t __compat_gid32_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024typedef u32 compat_mode_t;
25typedef u32 compat_ino_t;
26typedef u32 compat_dev_t;
27typedef s32 compat_off_t;
28typedef s64 compat_loff_t;
29typedef u32 compat_nlink_t;
30typedef s32 compat_ipc_pid_t;
31typedef s32 compat_daddr_t;
32typedef s32 compat_caddr_t;
33typedef struct {
34 s32 val[2];
35} compat_fsid_t;
Stephen Rothwell0d77e5a2005-06-23 00:10:14 -070036typedef s32 compat_timer_t;
Atsushi Nemoto05e43962006-11-07 18:02:44 +090037typedef s32 compat_key_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39typedef s32 compat_int_t;
40typedef s32 compat_long_t;
Arnd Bergmann4b777582007-07-15 23:41:11 -070041typedef s64 compat_s64;
Linus Torvalds1da177e2005-04-16 15:20:36 -070042typedef u32 compat_uint_t;
43typedef u32 compat_ulong_t;
Arnd Bergmann4b777582007-07-15 23:41:11 -070044typedef u64 compat_u64;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
46struct compat_timespec {
47 compat_time_t tv_sec;
48 s32 tv_nsec;
49};
50
51struct compat_timeval {
52 compat_time_t tv_sec;
53 s32 tv_usec;
54};
55
56struct compat_stat {
57 compat_dev_t st_dev;
58 s32 st_pad1[3];
59 compat_ino_t st_ino;
60 compat_mode_t st_mode;
61 compat_nlink_t st_nlink;
Ralf Baechle4ee13032005-10-29 19:32:40 +010062 __compat_uid_t st_uid;
63 __compat_gid_t st_gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 compat_dev_t st_rdev;
65 s32 st_pad2[2];
66 compat_off_t st_size;
67 s32 st_pad3;
68 compat_time_t st_atime;
69 s32 st_atime_nsec;
70 compat_time_t st_mtime;
71 s32 st_mtime_nsec;
72 compat_time_t st_ctime;
73 s32 st_ctime_nsec;
74 s32 st_blksize;
75 s32 st_blocks;
76 s32 st_pad4[14];
77};
78
79struct compat_flock {
80 short l_type;
81 short l_whence;
82 compat_off_t l_start;
83 compat_off_t l_len;
84 s32 l_sysid;
85 compat_pid_t l_pid;
86 short __unused;
87 s32 pad[4];
88};
89
90#define F_GETLK64 33
91#define F_SETLK64 34
92#define F_SETLKW64 35
93
94struct compat_flock64 {
95 short l_type;
96 short l_whence;
97 compat_loff_t l_start;
98 compat_loff_t l_len;
99 compat_pid_t l_pid;
100};
101
102struct compat_statfs {
103 int f_type;
104 int f_bsize;
105 int f_frsize;
106 int f_blocks;
107 int f_bfree;
108 int f_files;
109 int f_ffree;
110 int f_bavail;
111 compat_fsid_t f_fsid;
112 int f_namelen;
113 int f_spare[6];
114};
115
116#define COMPAT_RLIM_INFINITY 0x7fffffffUL
117
118typedef u32 compat_old_sigset_t; /* at least 32 bits */
119
120#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
121#define _COMPAT_NSIG_BPW 32
122
123typedef u32 compat_sigset_word;
124
125#define COMPAT_OFF_T_MAX 0x7fffffff
126#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
127
128/*
129 * A pointer passed in from user mode. This should not
130 * be used for syscall parameters, just declare them
131 * as pointers because the syscall entry code will have
Marcin Ĺšlusarz8b3de0d2008-02-03 16:32:51 +0200132 * appropriately converted them already.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 */
134typedef u32 compat_uptr_t;
135
Atsushi Nemoto219ac732006-02-21 16:05:11 +0900136static inline void __user *compat_ptr(compat_uptr_t uptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137{
Atsushi Nemoto01bebc62007-07-13 23:51:38 +0900138 /* cast to a __user pointer via "unsigned long" makes sparse happy */
139 return (void __user *)(unsigned long)(long)uptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140}
141
Ingo Molnar62ac2852006-03-27 01:16:13 -0800142static inline compat_uptr_t ptr_to_compat(void __user *uptr)
143{
144 return (u32)(unsigned long)uptr;
145}
146
Atsushi Nemoto219ac732006-02-21 16:05:11 +0900147static inline void __user *compat_alloc_user_space(long len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148{
149 struct pt_regs *regs = (struct pt_regs *)
150 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
151
Atsushi Nemoto219ac732006-02-21 16:05:11 +0900152 return (void __user *) (regs->regs[29] - len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
Atsushi Nemoto05e43962006-11-07 18:02:44 +0900155struct compat_ipc64_perm {
156 compat_key_t key;
157 __compat_uid32_t uid;
158 __compat_gid32_t gid;
159 __compat_uid32_t cuid;
160 __compat_gid32_t cgid;
161 compat_mode_t mode;
162 unsigned short seq;
163 unsigned short __pad2;
164 compat_ulong_t __unused1;
165 compat_ulong_t __unused2;
166};
167
168struct compat_semid64_ds {
169 struct compat_ipc64_perm sem_perm;
170 compat_time_t sem_otime;
171 compat_time_t sem_ctime;
172 compat_ulong_t sem_nsems;
173 compat_ulong_t __unused1;
174 compat_ulong_t __unused2;
175};
176
177struct compat_msqid64_ds {
178 struct compat_ipc64_perm msg_perm;
179#ifndef CONFIG_CPU_LITTLE_ENDIAN
180 compat_ulong_t __unused1;
181#endif
182 compat_time_t msg_stime;
183#ifdef CONFIG_CPU_LITTLE_ENDIAN
184 compat_ulong_t __unused1;
185#endif
186#ifndef CONFIG_CPU_LITTLE_ENDIAN
187 compat_ulong_t __unused2;
188#endif
189 compat_time_t msg_rtime;
190#ifdef CONFIG_CPU_LITTLE_ENDIAN
191 compat_ulong_t __unused2;
192#endif
193#ifndef CONFIG_CPU_LITTLE_ENDIAN
194 compat_ulong_t __unused3;
195#endif
196 compat_time_t msg_ctime;
197#ifdef CONFIG_CPU_LITTLE_ENDIAN
198 compat_ulong_t __unused3;
199#endif
200 compat_ulong_t msg_cbytes;
201 compat_ulong_t msg_qnum;
202 compat_ulong_t msg_qbytes;
203 compat_pid_t msg_lspid;
204 compat_pid_t msg_lrpid;
205 compat_ulong_t __unused4;
206 compat_ulong_t __unused5;
207};
208
209struct compat_shmid64_ds {
210 struct compat_ipc64_perm shm_perm;
211 compat_size_t shm_segsz;
212 compat_time_t shm_atime;
213 compat_time_t shm_dtime;
214 compat_time_t shm_ctime;
215 compat_pid_t shm_cpid;
216 compat_pid_t shm_lpid;
217 compat_ulong_t shm_nattch;
218 compat_ulong_t __unused1;
219 compat_ulong_t __unused2;
220};
221
Ralf Baechle4302e5d2009-03-05 11:45:48 +0100222static inline int is_compat_task(void)
223{
224 return test_thread_flag(TIF_32BIT);
225}
226
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227#endif /* _ASM_COMPAT_H */