asm-*/compat.h: fix typo in comment
[linux-2.6.git] / include / asm-x86 / compat.h
1 #ifndef _ASM_X86_64_COMPAT_H
2 #define _ASM_X86_64_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
13 typedef u32             compat_size_t;
14 typedef s32             compat_ssize_t;
15 typedef s32             compat_time_t;
16 typedef s32             compat_clock_t;
17 typedef s32             compat_pid_t;
18 typedef u16             __compat_uid_t;
19 typedef u16             __compat_gid_t;
20 typedef u32             __compat_uid32_t;
21 typedef u32             __compat_gid32_t;
22 typedef u16             compat_mode_t;
23 typedef u32             compat_ino_t;
24 typedef u16             compat_dev_t;
25 typedef s32             compat_off_t;
26 typedef s64             compat_loff_t;
27 typedef u16             compat_nlink_t;
28 typedef u16             compat_ipc_pid_t;
29 typedef s32             compat_daddr_t;
30 typedef u32             compat_caddr_t;
31 typedef __kernel_fsid_t compat_fsid_t;
32 typedef s32             compat_timer_t;
33 typedef s32             compat_key_t;
34
35 typedef s32             compat_int_t;
36 typedef s32             compat_long_t;
37 typedef s64 __attribute__((aligned(4))) compat_s64;
38 typedef u32             compat_uint_t;
39 typedef u32             compat_ulong_t;
40 typedef u64 __attribute__((aligned(4))) compat_u64;
41
42 struct compat_timespec {
43         compat_time_t   tv_sec;
44         s32             tv_nsec;
45 };
46
47 struct compat_timeval {
48         compat_time_t   tv_sec;
49         s32             tv_usec;
50 };
51
52 struct compat_stat {
53         compat_dev_t    st_dev;
54         u16             __pad1;
55         compat_ino_t    st_ino;
56         compat_mode_t   st_mode;
57         compat_nlink_t  st_nlink;
58         __compat_uid_t  st_uid;
59         __compat_gid_t  st_gid;
60         compat_dev_t    st_rdev;
61         u16             __pad2;
62         u32             st_size;
63         u32             st_blksize;
64         u32             st_blocks;
65         u32             st_atime;
66         u32             st_atime_nsec;
67         u32             st_mtime;
68         u32             st_mtime_nsec;
69         u32             st_ctime;
70         u32             st_ctime_nsec;
71         u32             __unused4;
72         u32             __unused5;
73 };
74
75 struct compat_flock {
76         short           l_type;
77         short           l_whence;
78         compat_off_t    l_start;
79         compat_off_t    l_len;
80         compat_pid_t    l_pid;
81 };
82
83 #define F_GETLK64       12      /*  using 'struct flock64' */
84 #define F_SETLK64       13
85 #define F_SETLKW64      14
86
87 /*
88  * IA32 uses 4 byte alignment for 64 bit quantities,
89  * so we need to pack this structure.
90  */
91 struct compat_flock64 {
92         short           l_type;
93         short           l_whence;
94         compat_loff_t   l_start;
95         compat_loff_t   l_len;
96         compat_pid_t    l_pid;
97 } __attribute__((packed));
98
99 struct compat_statfs {
100         int             f_type;
101         int             f_bsize;
102         int             f_blocks;
103         int             f_bfree;
104         int             f_bavail;
105         int             f_files;
106         int             f_ffree;
107         compat_fsid_t   f_fsid;
108         int             f_namelen;      /* SunOS ignores this field. */
109         int             f_frsize;
110         int             f_spare[5];
111 };
112
113 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
114 #define COMPAT_RLIM_INFINITY            0xffffffff
115
116 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
117
118 #define _COMPAT_NSIG            64
119 #define _COMPAT_NSIG_BPW        32
120
121 typedef u32               compat_sigset_word;
122
123 #define COMPAT_OFF_T_MAX        0x7fffffff
124 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
125
126 struct compat_ipc64_perm {
127         compat_key_t key;
128         __compat_uid32_t uid;
129         __compat_gid32_t gid;
130         __compat_uid32_t cuid;
131         __compat_gid32_t cgid;
132         unsigned short mode;
133         unsigned short __pad1;
134         unsigned short seq;
135         unsigned short __pad2;
136         compat_ulong_t unused1;
137         compat_ulong_t unused2;
138 };
139
140 struct compat_semid64_ds {
141         struct compat_ipc64_perm sem_perm;
142         compat_time_t  sem_otime;
143         compat_ulong_t __unused1;
144         compat_time_t  sem_ctime;
145         compat_ulong_t __unused2;
146         compat_ulong_t sem_nsems;
147         compat_ulong_t __unused3;
148         compat_ulong_t __unused4;
149 };
150
151 struct compat_msqid64_ds {
152         struct compat_ipc64_perm msg_perm;
153         compat_time_t  msg_stime;
154         compat_ulong_t __unused1;
155         compat_time_t  msg_rtime;
156         compat_ulong_t __unused2;
157         compat_time_t  msg_ctime;
158         compat_ulong_t __unused3;
159         compat_ulong_t msg_cbytes;
160         compat_ulong_t msg_qnum;
161         compat_ulong_t msg_qbytes;
162         compat_pid_t   msg_lspid;
163         compat_pid_t   msg_lrpid;
164         compat_ulong_t __unused4;
165         compat_ulong_t __unused5;
166 };
167
168 struct compat_shmid64_ds {
169         struct compat_ipc64_perm shm_perm;
170         compat_size_t  shm_segsz;
171         compat_time_t  shm_atime;
172         compat_ulong_t __unused1;
173         compat_time_t  shm_dtime;
174         compat_ulong_t __unused2;
175         compat_time_t  shm_ctime;
176         compat_ulong_t __unused3;
177         compat_pid_t   shm_cpid;
178         compat_pid_t   shm_lpid;
179         compat_ulong_t shm_nattch;
180         compat_ulong_t __unused4;
181         compat_ulong_t __unused5;
182 };
183
184 /*
185  * The type of struct elf_prstatus.pr_reg in compatible core dumps.
186  */
187 typedef struct user_regs_struct32 compat_elf_gregset_t;
188
189 /*
190  * A pointer passed in from user mode. This should not
191  * be used for syscall parameters, just declare them
192  * as pointers because the syscall entry code will have
193  * appropriately converted them already.
194  */
195 typedef u32             compat_uptr_t;
196
197 static inline void __user *compat_ptr(compat_uptr_t uptr)
198 {
199         return (void __user *)(unsigned long)uptr;
200 }
201
202 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
203 {
204         return (u32)(unsigned long)uptr;
205 }
206
207 static __inline__ void __user *compat_alloc_user_space(long len)
208 {
209         struct pt_regs *regs = task_pt_regs(current);
210         return (void __user *)regs->sp - len;
211 }
212
213 static inline int is_compat_task(void)
214 {
215         return current_thread_info()->status & TS_COMPAT;
216 }
217
218 #endif /* _ASM_X86_64_COMPAT_H */