306160e58b48772ccef1f65c803a3a3813ff5d1e
[linux-2.6.git] / arch / x86 / include / asm / compat.h
1 #ifndef _ASM_X86_COMPAT_H
2 #define _ASM_X86_COMPAT_H
3
4 /*
5  * Architecture specific compatibility types
6  */
7 #include <linux/types.h>
8 #include <linux/sched.h>
9 #include <asm/user32.h>
10
11 #define COMPAT_USER_HZ          100
12 #define COMPAT_UTS_MACHINE      "i686\0\0"
13
14 typedef u32             compat_size_t;
15 typedef s32             compat_ssize_t;
16 typedef s32             compat_time_t;
17 typedef s32             compat_clock_t;
18 typedef s32             compat_pid_t;
19 typedef u16             __compat_uid_t;
20 typedef u16             __compat_gid_t;
21 typedef u32             __compat_uid32_t;
22 typedef u32             __compat_gid32_t;
23 typedef u16             compat_mode_t;
24 typedef u32             compat_ino_t;
25 typedef u16             compat_dev_t;
26 typedef s32             compat_off_t;
27 typedef s64             compat_loff_t;
28 typedef u16             compat_nlink_t;
29 typedef u16             compat_ipc_pid_t;
30 typedef s32             compat_daddr_t;
31 typedef u32             compat_caddr_t;
32 typedef __kernel_fsid_t compat_fsid_t;
33 typedef s32             compat_timer_t;
34 typedef s32             compat_key_t;
35
36 typedef s32             compat_int_t;
37 typedef s32             compat_long_t;
38 typedef s64 __attribute__((aligned(4))) compat_s64;
39 typedef u32             compat_uint_t;
40 typedef u32             compat_ulong_t;
41 typedef u64 __attribute__((aligned(4))) compat_u64;
42
43 struct compat_timespec {
44         compat_time_t   tv_sec;
45         s32             tv_nsec;
46 };
47
48 struct compat_timeval {
49         compat_time_t   tv_sec;
50         s32             tv_usec;
51 };
52
53 struct compat_stat {
54         compat_dev_t    st_dev;
55         u16             __pad1;
56         compat_ino_t    st_ino;
57         compat_mode_t   st_mode;
58         compat_nlink_t  st_nlink;
59         __compat_uid_t  st_uid;
60         __compat_gid_t  st_gid;
61         compat_dev_t    st_rdev;
62         u16             __pad2;
63         u32             st_size;
64         u32             st_blksize;
65         u32             st_blocks;
66         u32             st_atime;
67         u32             st_atime_nsec;
68         u32             st_mtime;
69         u32             st_mtime_nsec;
70         u32             st_ctime;
71         u32             st_ctime_nsec;
72         u32             __unused4;
73         u32             __unused5;
74 };
75
76 struct compat_flock {
77         short           l_type;
78         short           l_whence;
79         compat_off_t    l_start;
80         compat_off_t    l_len;
81         compat_pid_t    l_pid;
82 };
83
84 #define F_GETLK64       12      /*  using 'struct flock64' */
85 #define F_SETLK64       13
86 #define F_SETLKW64      14
87
88 /*
89  * IA32 uses 4 byte alignment for 64 bit quantities,
90  * so we need to pack this structure.
91  */
92 struct compat_flock64 {
93         short           l_type;
94         short           l_whence;
95         compat_loff_t   l_start;
96         compat_loff_t   l_len;
97         compat_pid_t    l_pid;
98 } __attribute__((packed));
99
100 struct compat_statfs {
101         int             f_type;
102         int             f_bsize;
103         int             f_blocks;
104         int             f_bfree;
105         int             f_bavail;
106         int             f_files;
107         int             f_ffree;
108         compat_fsid_t   f_fsid;
109         int             f_namelen;      /* SunOS ignores this field. */
110         int             f_frsize;
111         int             f_spare[5];
112 };
113
114 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
115 #define COMPAT_RLIM_INFINITY            0xffffffff
116
117 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
118
119 #define _COMPAT_NSIG            64
120 #define _COMPAT_NSIG_BPW        32
121
122 typedef u32               compat_sigset_word;
123
124 #define COMPAT_OFF_T_MAX        0x7fffffff
125 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
126
127 struct compat_ipc64_perm {
128         compat_key_t key;
129         __compat_uid32_t uid;
130         __compat_gid32_t gid;
131         __compat_uid32_t cuid;
132         __compat_gid32_t cgid;
133         unsigned short mode;
134         unsigned short __pad1;
135         unsigned short seq;
136         unsigned short __pad2;
137         compat_ulong_t unused1;
138         compat_ulong_t unused2;
139 };
140
141 struct compat_semid64_ds {
142         struct compat_ipc64_perm sem_perm;
143         compat_time_t  sem_otime;
144         compat_ulong_t __unused1;
145         compat_time_t  sem_ctime;
146         compat_ulong_t __unused2;
147         compat_ulong_t sem_nsems;
148         compat_ulong_t __unused3;
149         compat_ulong_t __unused4;
150 };
151
152 struct compat_msqid64_ds {
153         struct compat_ipc64_perm msg_perm;
154         compat_time_t  msg_stime;
155         compat_ulong_t __unused1;
156         compat_time_t  msg_rtime;
157         compat_ulong_t __unused2;
158         compat_time_t  msg_ctime;
159         compat_ulong_t __unused3;
160         compat_ulong_t msg_cbytes;
161         compat_ulong_t msg_qnum;
162         compat_ulong_t msg_qbytes;
163         compat_pid_t   msg_lspid;
164         compat_pid_t   msg_lrpid;
165         compat_ulong_t __unused4;
166         compat_ulong_t __unused5;
167 };
168
169 struct compat_shmid64_ds {
170         struct compat_ipc64_perm shm_perm;
171         compat_size_t  shm_segsz;
172         compat_time_t  shm_atime;
173         compat_ulong_t __unused1;
174         compat_time_t  shm_dtime;
175         compat_ulong_t __unused2;
176         compat_time_t  shm_ctime;
177         compat_ulong_t __unused3;
178         compat_pid_t   shm_cpid;
179         compat_pid_t   shm_lpid;
180         compat_ulong_t shm_nattch;
181         compat_ulong_t __unused4;
182         compat_ulong_t __unused5;
183 };
184
185 /*
186  * The type of struct elf_prstatus.pr_reg in compatible core dumps.
187  */
188 typedef struct user_regs_struct32 compat_elf_gregset_t;
189
190 /*
191  * A pointer passed in from user mode. This should not
192  * be used for syscall parameters, just declare them
193  * as pointers because the syscall entry code will have
194  * appropriately converted them already.
195  */
196 typedef u32             compat_uptr_t;
197
198 static inline void __user *compat_ptr(compat_uptr_t uptr)
199 {
200         return (void __user *)(unsigned long)uptr;
201 }
202
203 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
204 {
205         return (u32)(unsigned long)uptr;
206 }
207
208 static inline void __user *compat_alloc_user_space(long len)
209 {
210         struct pt_regs *regs = task_pt_regs(current);
211         return (void __user *)regs->sp - len;
212 }
213
214 static inline int is_compat_task(void)
215 {
216         return current_thread_info()->status & TS_COMPAT;
217 }
218
219 #endif /* _ASM_X86_COMPAT_H */