Line data Source code
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 :
13 : typedef u32 compat_size_t;
14 : typedef s32 compat_ssize_t;
15 1 : 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 1 : 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 1 :
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 1 : 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 *arch_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_COMPAT_H */
|