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-rw-r--r--arch/x86/include/asm/compat.h218
1 files changed, 218 insertions, 0 deletions
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
new file mode 100644
index 000000000000..9a9c7bdc923d
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+++ b/arch/x86/include/asm/compat.h
@@ -0,0 +1,218 @@
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
13typedef u32 compat_size_t;
14typedef s32 compat_ssize_t;
15typedef s32 compat_time_t;
16typedef s32 compat_clock_t;
17typedef s32 compat_pid_t;
18typedef u16 __compat_uid_t;
19typedef u16 __compat_gid_t;
20typedef u32 __compat_uid32_t;
21typedef u32 __compat_gid32_t;
22typedef u16 compat_mode_t;
23typedef u32 compat_ino_t;
24typedef u16 compat_dev_t;
25typedef s32 compat_off_t;
26typedef s64 compat_loff_t;
27typedef u16 compat_nlink_t;
28typedef u16 compat_ipc_pid_t;
29typedef s32 compat_daddr_t;
30typedef u32 compat_caddr_t;
31typedef __kernel_fsid_t compat_fsid_t;
32typedef s32 compat_timer_t;
33typedef s32 compat_key_t;
34
35typedef s32 compat_int_t;
36typedef s32 compat_long_t;
37typedef s64 __attribute__((aligned(4))) compat_s64;
38typedef u32 compat_uint_t;
39typedef u32 compat_ulong_t;
40typedef u64 __attribute__((aligned(4))) compat_u64;
41
42struct compat_timespec {
43 compat_time_t tv_sec;
44 s32 tv_nsec;
45};
46
47struct compat_timeval {
48 compat_time_t tv_sec;
49 s32 tv_usec;
50};
51
52struct 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
75struct 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 */
91struct 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
99struct 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
116typedef u32 compat_old_sigset_t; /* at least 32 bits */
117
118#define _COMPAT_NSIG 64
119#define _COMPAT_NSIG_BPW 32
120
121typedef u32 compat_sigset_word;
122
123#define COMPAT_OFF_T_MAX 0x7fffffff
124#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
125
126struct 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
140struct 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
151struct 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
168struct 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 */
187typedef 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 */
195typedef u32 compat_uptr_t;
196
197static inline void __user *compat_ptr(compat_uptr_t uptr)
198{
199 return (void __user *)(unsigned long)uptr;
200}
201
202static inline compat_uptr_t ptr_to_compat(void __user *uptr)
203{
204 return (u32)(unsigned long)uptr;
205}
206
207static 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
213static inline int is_compat_task(void)
214{
215 return current_thread_info()->status & TS_COMPAT;
216}
217
218#endif /* _ASM_X86_COMPAT_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-29 05:14:07 -0500