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 */
219
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