2 * Copyright (C) 2012 ARM Ltd.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 #ifndef __ASM_COMPAT_H
17 #define __ASM_COMPAT_H
22 * Architecture specific compatibility types
24 #include <linux/types.h>
25 #include <linux/sched.h>
26 #include <linux/sched/task_stack.h>
28 #define COMPAT_USER_HZ 100
30 #define COMPAT_UTS_MACHINE "armv8b\0\0"
32 #define COMPAT_UTS_MACHINE "armv8l\0\0"
35 typedef u32 compat_size_t
;
36 typedef s32 compat_ssize_t
;
37 typedef s32 compat_clock_t
;
38 typedef s32 compat_pid_t
;
39 typedef u16 __compat_uid_t
;
40 typedef u16 __compat_gid_t
;
41 typedef u16 __compat_uid16_t
;
42 typedef u16 __compat_gid16_t
;
43 typedef u32 __compat_uid32_t
;
44 typedef u32 __compat_gid32_t
;
45 typedef u16 compat_mode_t
;
46 typedef u32 compat_ino_t
;
47 typedef u32 compat_dev_t
;
48 typedef s32 compat_off_t
;
49 typedef s64 compat_loff_t
;
50 typedef s32 compat_nlink_t
;
51 typedef u16 compat_ipc_pid_t
;
52 typedef s32 compat_daddr_t
;
53 typedef u32 compat_caddr_t
;
54 typedef __kernel_fsid_t compat_fsid_t
;
55 typedef s32 compat_key_t
;
56 typedef s32 compat_timer_t
;
58 typedef s16 compat_short_t
;
59 typedef s32 compat_int_t
;
60 typedef s32 compat_long_t
;
61 typedef s64 compat_s64
;
62 typedef u16 compat_ushort_t
;
63 typedef u32 compat_uint_t
;
64 typedef u32 compat_ulong_t
;
65 typedef u64 compat_u64
;
66 typedef u32 compat_uptr_t
;
76 compat_mode_t st_mode
;
77 compat_ushort_t st_nlink
;
78 __compat_uid16_t st_uid
;
79 __compat_gid16_t st_gid
;
87 compat_off_t st_blksize
;
88 compat_off_t st_blocks
;
89 compat_time_t st_atime
;
90 compat_ulong_t st_atime_nsec
;
91 compat_time_t st_mtime
;
92 compat_ulong_t st_mtime_nsec
;
93 compat_time_t st_ctime
;
94 compat_ulong_t st_ctime_nsec
;
95 compat_ulong_t __unused4
[2];
101 compat_off_t l_start
;
106 #define F_GETLK64 12 /* using 'struct flock64' */
108 #define F_SETLKW64 14
110 struct compat_flock64
{
113 compat_loff_t l_start
;
118 struct compat_statfs
{
126 compat_fsid_t f_fsid
;
127 int f_namelen
; /* SunOS ignores this field. */
133 #define COMPAT_RLIM_INFINITY 0xffffffff
135 typedef u32 compat_old_sigset_t
;
137 #define _COMPAT_NSIG 64
138 #define _COMPAT_NSIG_BPW 32
140 typedef u32 compat_sigset_word
;
142 #define COMPAT_OFF_T_MAX 0x7fffffff
145 * A pointer passed in from user mode. This should not
146 * be used for syscall parameters, just declare them
147 * as pointers because the syscall entry code will have
148 * appropriately converted them already.
151 static inline void __user
*compat_ptr(compat_uptr_t uptr
)
153 return (void __user
*)(unsigned long)uptr
;
156 static inline compat_uptr_t
ptr_to_compat(void __user
*uptr
)
158 return (u32
)(unsigned long)uptr
;
161 #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current)))
163 static inline void __user
*arch_compat_alloc_user_space(long len
)
165 return (void __user
*)compat_user_stack_pointer() - len
;
168 struct compat_ipc64_perm
{
170 __compat_uid32_t uid
;
171 __compat_gid32_t gid
;
172 __compat_uid32_t cuid
;
173 __compat_gid32_t cgid
;
175 unsigned short __pad1
;
177 unsigned short __pad2
;
178 compat_ulong_t unused1
;
179 compat_ulong_t unused2
;
182 struct compat_semid64_ds
{
183 struct compat_ipc64_perm sem_perm
;
184 compat_ulong_t sem_otime
;
185 compat_ulong_t sem_otime_high
;
186 compat_ulong_t sem_ctime
;
187 compat_ulong_t sem_ctime_high
;
188 compat_ulong_t sem_nsems
;
189 compat_ulong_t __unused3
;
190 compat_ulong_t __unused4
;
193 struct compat_msqid64_ds
{
194 struct compat_ipc64_perm msg_perm
;
195 compat_ulong_t msg_stime
;
196 compat_ulong_t msg_stime_high
;
197 compat_ulong_t msg_rtime
;
198 compat_ulong_t msg_rtime_high
;
199 compat_ulong_t msg_ctime
;
200 compat_ulong_t msg_ctime_high
;
201 compat_ulong_t msg_cbytes
;
202 compat_ulong_t msg_qnum
;
203 compat_ulong_t msg_qbytes
;
204 compat_pid_t msg_lspid
;
205 compat_pid_t msg_lrpid
;
206 compat_ulong_t __unused4
;
207 compat_ulong_t __unused5
;
210 struct compat_shmid64_ds
{
211 struct compat_ipc64_perm shm_perm
;
212 compat_size_t shm_segsz
;
213 compat_ulong_t shm_atime
;
214 compat_ulong_t shm_atime_high
;
215 compat_ulong_t shm_dtime
;
216 compat_ulong_t shm_dtime_high
;
217 compat_ulong_t shm_ctime
;
218 compat_ulong_t shm_ctime_high
;
219 compat_pid_t shm_cpid
;
220 compat_pid_t shm_lpid
;
221 compat_ulong_t shm_nattch
;
222 compat_ulong_t __unused4
;
223 compat_ulong_t __unused5
;
226 static inline int is_compat_task(void)
228 return test_thread_flag(TIF_32BIT
);
231 static inline int is_compat_thread(struct thread_info
*thread
)
233 return test_ti_thread_flag(thread
, TIF_32BIT
);
236 #else /* !CONFIG_COMPAT */
238 static inline int is_compat_thread(struct thread_info
*thread
)
243 #endif /* CONFIG_COMPAT */
244 #endif /* __KERNEL__ */
245 #endif /* __ASM_COMPAT_H */