1 #ifndef _ASM_X86_COMPAT_H
2 #define _ASM_X86_COMPAT_H
5 * Architecture specific compatibility types
7 #include <linux/types.h>
8 #include <linux/sched.h>
9 #include <asm/user32.h>
11 #define COMPAT_USER_HZ 100
12 #define COMPAT_UTS_MACHINE "i686\0\0"
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;
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;
43 struct compat_timespec {
48 struct compat_timeval {
57 compat_mode_t st_mode;
58 compat_nlink_t st_nlink;
59 __compat_uid_t st_uid;
60 __compat_gid_t st_gid;
84 #define F_GETLK64 12 /* using 'struct flock64' */
89 * IA32 uses 4 byte alignment for 64 bit quantities,
90 * so we need to pack this structure.
92 struct compat_flock64 {
95 compat_loff_t l_start;
98 } __attribute__((packed));
100 struct compat_statfs {
108 compat_fsid_t f_fsid;
109 int f_namelen; /* SunOS ignores this field. */
114 #define COMPAT_RLIM_OLD_INFINITY 0x7fffffff
115 #define COMPAT_RLIM_INFINITY 0xffffffff
117 typedef u32 compat_old_sigset_t; /* at least 32 bits */
119 #define _COMPAT_NSIG 64
120 #define _COMPAT_NSIG_BPW 32
122 typedef u32 compat_sigset_word;
124 #define COMPAT_OFF_T_MAX 0x7fffffff
125 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
127 struct compat_ipc64_perm {
129 __compat_uid32_t uid;
130 __compat_gid32_t gid;
131 __compat_uid32_t cuid;
132 __compat_gid32_t cgid;
134 unsigned short __pad1;
136 unsigned short __pad2;
137 compat_ulong_t unused1;
138 compat_ulong_t unused2;
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;
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;
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;
186 * The type of struct elf_prstatus.pr_reg in compatible core dumps.
188 typedef struct user_regs_struct32 compat_elf_gregset_t;
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.
196 typedef u32 compat_uptr_t;
198 static inline void __user *compat_ptr(compat_uptr_t uptr)
200 return (void __user *)(unsigned long)uptr;
203 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
205 return (u32)(unsigned long)uptr;
208 static inline void __user *arch_compat_alloc_user_space(long len)
210 struct pt_regs *regs = task_pt_regs(current);
211 return (void __user *)regs->sp - len;
214 static inline int is_compat_task(void)
216 return current_thread_info()->status & TS_COMPAT;
219 #endif /* _ASM_X86_COMPAT_H */