Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / arch / arm64 / include / asm / compat.h
blobc00c62e1a4a3e03d5d0f8c3d0145ad7fb14309b3
1 /*
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
18 #ifdef __KERNEL__
19 #ifdef CONFIG_COMPAT
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
29 #ifdef __AARCH64EB__
30 #define COMPAT_UTS_MACHINE "armv8b\0\0"
31 #else
32 #define COMPAT_UTS_MACHINE "armv8l\0\0"
33 #endif
35 typedef u32 compat_size_t;
36 typedef s32 compat_ssize_t;
37 typedef s32 compat_time_t;
38 typedef s32 compat_clock_t;
39 typedef s32 compat_pid_t;
40 typedef u16 __compat_uid_t;
41 typedef u16 __compat_gid_t;
42 typedef u16 __compat_uid16_t;
43 typedef u16 __compat_gid16_t;
44 typedef u32 __compat_uid32_t;
45 typedef u32 __compat_gid32_t;
46 typedef u16 compat_mode_t;
47 typedef u32 compat_ino_t;
48 typedef u32 compat_dev_t;
49 typedef s32 compat_off_t;
50 typedef s64 compat_loff_t;
51 typedef s32 compat_nlink_t;
52 typedef u16 compat_ipc_pid_t;
53 typedef s32 compat_daddr_t;
54 typedef u32 compat_caddr_t;
55 typedef __kernel_fsid_t compat_fsid_t;
56 typedef s32 compat_key_t;
57 typedef s32 compat_timer_t;
59 typedef s16 compat_short_t;
60 typedef s32 compat_int_t;
61 typedef s32 compat_long_t;
62 typedef s64 compat_s64;
63 typedef u16 compat_ushort_t;
64 typedef u32 compat_uint_t;
65 typedef u32 compat_ulong_t;
66 typedef u64 compat_u64;
67 typedef u32 compat_uptr_t;
69 struct compat_timespec {
70 compat_time_t tv_sec;
71 s32 tv_nsec;
74 struct compat_timeval {
75 compat_time_t tv_sec;
76 s32 tv_usec;
79 struct compat_stat {
80 #ifdef __AARCH64EB__
81 short st_dev;
82 short __pad1;
83 #else
84 compat_dev_t st_dev;
85 #endif
86 compat_ino_t st_ino;
87 compat_mode_t st_mode;
88 compat_ushort_t st_nlink;
89 __compat_uid16_t st_uid;
90 __compat_gid16_t st_gid;
91 #ifdef __AARCH64EB__
92 short st_rdev;
93 short __pad2;
94 #else
95 compat_dev_t st_rdev;
96 #endif
97 compat_off_t st_size;
98 compat_off_t st_blksize;
99 compat_off_t st_blocks;
100 compat_time_t st_atime;
101 compat_ulong_t st_atime_nsec;
102 compat_time_t st_mtime;
103 compat_ulong_t st_mtime_nsec;
104 compat_time_t st_ctime;
105 compat_ulong_t st_ctime_nsec;
106 compat_ulong_t __unused4[2];
109 struct compat_flock {
110 short l_type;
111 short l_whence;
112 compat_off_t l_start;
113 compat_off_t l_len;
114 compat_pid_t l_pid;
117 #define F_GETLK64 12 /* using 'struct flock64' */
118 #define F_SETLK64 13
119 #define F_SETLKW64 14
121 struct compat_flock64 {
122 short l_type;
123 short l_whence;
124 compat_loff_t l_start;
125 compat_loff_t l_len;
126 compat_pid_t l_pid;
129 struct compat_statfs {
130 int f_type;
131 int f_bsize;
132 int f_blocks;
133 int f_bfree;
134 int f_bavail;
135 int f_files;
136 int f_ffree;
137 compat_fsid_t f_fsid;
138 int f_namelen; /* SunOS ignores this field. */
139 int f_frsize;
140 int f_flags;
141 int f_spare[4];
144 #define COMPAT_RLIM_INFINITY 0xffffffff
146 typedef u32 compat_old_sigset_t;
148 #define _COMPAT_NSIG 64
149 #define _COMPAT_NSIG_BPW 32
151 typedef u32 compat_sigset_word;
153 #define COMPAT_OFF_T_MAX 0x7fffffff
156 * A pointer passed in from user mode. This should not
157 * be used for syscall parameters, just declare them
158 * as pointers because the syscall entry code will have
159 * appropriately converted them already.
162 static inline void __user *compat_ptr(compat_uptr_t uptr)
164 return (void __user *)(unsigned long)uptr;
167 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
169 return (u32)(unsigned long)uptr;
172 #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current)))
174 static inline void __user *arch_compat_alloc_user_space(long len)
176 return (void __user *)compat_user_stack_pointer() - len;
179 struct compat_ipc64_perm {
180 compat_key_t key;
181 __compat_uid32_t uid;
182 __compat_gid32_t gid;
183 __compat_uid32_t cuid;
184 __compat_gid32_t cgid;
185 unsigned short mode;
186 unsigned short __pad1;
187 unsigned short seq;
188 unsigned short __pad2;
189 compat_ulong_t unused1;
190 compat_ulong_t unused2;
193 struct compat_semid64_ds {
194 struct compat_ipc64_perm sem_perm;
195 compat_time_t sem_otime;
196 compat_ulong_t __unused1;
197 compat_time_t sem_ctime;
198 compat_ulong_t __unused2;
199 compat_ulong_t sem_nsems;
200 compat_ulong_t __unused3;
201 compat_ulong_t __unused4;
204 struct compat_msqid64_ds {
205 struct compat_ipc64_perm msg_perm;
206 compat_time_t msg_stime;
207 compat_ulong_t __unused1;
208 compat_time_t msg_rtime;
209 compat_ulong_t __unused2;
210 compat_time_t msg_ctime;
211 compat_ulong_t __unused3;
212 compat_ulong_t msg_cbytes;
213 compat_ulong_t msg_qnum;
214 compat_ulong_t msg_qbytes;
215 compat_pid_t msg_lspid;
216 compat_pid_t msg_lrpid;
217 compat_ulong_t __unused4;
218 compat_ulong_t __unused5;
221 struct compat_shmid64_ds {
222 struct compat_ipc64_perm shm_perm;
223 compat_size_t shm_segsz;
224 compat_time_t shm_atime;
225 compat_ulong_t __unused1;
226 compat_time_t shm_dtime;
227 compat_ulong_t __unused2;
228 compat_time_t shm_ctime;
229 compat_ulong_t __unused3;
230 compat_pid_t shm_cpid;
231 compat_pid_t shm_lpid;
232 compat_ulong_t shm_nattch;
233 compat_ulong_t __unused4;
234 compat_ulong_t __unused5;
237 static inline int is_compat_task(void)
239 return test_thread_flag(TIF_32BIT);
242 static inline int is_compat_thread(struct thread_info *thread)
244 return test_ti_thread_flag(thread, TIF_32BIT);
247 #else /* !CONFIG_COMPAT */
249 static inline int is_compat_thread(struct thread_info *thread)
251 return 0;
254 #endif /* CONFIG_COMPAT */
255 #endif /* __KERNEL__ */
256 #endif /* __ASM_COMPAT_H */