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3dd681d9 WD |
1 | /* |
2 | * Copyright (C) 2012 ARM Ltd. | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | * | |
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/>. | |
15 | */ | |
16 | #ifndef __ASM_COMPAT_H | |
17 | #define __ASM_COMPAT_H | |
18 | #ifdef __KERNEL__ | |
19 | #ifdef CONFIG_COMPAT | |
20 | ||
21 | /* | |
22 | * Architecture specific compatibility types | |
23 | */ | |
24 | #include <linux/types.h> | |
25 | #include <linux/sched.h> | |
26 | ||
27 | #define COMPAT_USER_HZ 100 | |
a795a38e WD |
28 | #ifdef __AARCH64EB__ |
29 | #define COMPAT_UTS_MACHINE "armv8b\0\0" | |
30 | #else | |
3dd681d9 | 31 | #define COMPAT_UTS_MACHINE "armv8l\0\0" |
a795a38e | 32 | #endif |
3dd681d9 WD |
33 | |
34 | typedef u32 compat_size_t; | |
35 | typedef s32 compat_ssize_t; | |
36 | typedef s32 compat_time_t; | |
37 | typedef s32 compat_clock_t; | |
38 | typedef s32 compat_pid_t; | |
971a5b6f VK |
39 | typedef u16 __compat_uid_t; |
40 | typedef u16 __compat_gid_t; | |
f15a2a12 CM |
41 | typedef u16 __compat_uid16_t; |
42 | typedef u16 __compat_gid16_t; | |
3dd681d9 WD |
43 | typedef u32 __compat_uid32_t; |
44 | typedef u32 __compat_gid32_t; | |
f15a2a12 | 45 | typedef u16 compat_mode_t; |
3dd681d9 WD |
46 | typedef u32 compat_ino_t; |
47 | typedef u32 compat_dev_t; | |
48 | typedef s32 compat_off_t; | |
49 | typedef s64 compat_loff_t; | |
f15a2a12 | 50 | typedef s32 compat_nlink_t; |
3dd681d9 WD |
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; | |
57 | ||
f15a2a12 | 58 | typedef s16 compat_short_t; |
3dd681d9 WD |
59 | typedef s32 compat_int_t; |
60 | typedef s32 compat_long_t; | |
61 | typedef s64 compat_s64; | |
f15a2a12 | 62 | typedef u16 compat_ushort_t; |
3dd681d9 WD |
63 | typedef u32 compat_uint_t; |
64 | typedef u32 compat_ulong_t; | |
65 | typedef u64 compat_u64; | |
751f409d | 66 | typedef u32 compat_uptr_t; |
3dd681d9 WD |
67 | |
68 | struct compat_timespec { | |
69 | compat_time_t tv_sec; | |
70 | s32 tv_nsec; | |
71 | }; | |
72 | ||
73 | struct compat_timeval { | |
74 | compat_time_t tv_sec; | |
75 | s32 tv_usec; | |
76 | }; | |
77 | ||
78 | struct compat_stat { | |
a795a38e WD |
79 | #ifdef __AARCH64EB__ |
80 | short st_dev; | |
81 | short __pad1; | |
82 | #else | |
3dd681d9 | 83 | compat_dev_t st_dev; |
a795a38e | 84 | #endif |
3dd681d9 WD |
85 | compat_ino_t st_ino; |
86 | compat_mode_t st_mode; | |
f15a2a12 CM |
87 | compat_ushort_t st_nlink; |
88 | __compat_uid16_t st_uid; | |
89 | __compat_gid16_t st_gid; | |
a795a38e WD |
90 | #ifdef __AARCH64EB__ |
91 | short st_rdev; | |
92 | short __pad2; | |
93 | #else | |
3dd681d9 | 94 | compat_dev_t st_rdev; |
a795a38e | 95 | #endif |
3dd681d9 WD |
96 | compat_off_t st_size; |
97 | compat_off_t st_blksize; | |
98 | compat_off_t st_blocks; | |
99 | compat_time_t st_atime; | |
f15a2a12 | 100 | compat_ulong_t st_atime_nsec; |
3dd681d9 | 101 | compat_time_t st_mtime; |
f15a2a12 | 102 | compat_ulong_t st_mtime_nsec; |
3dd681d9 | 103 | compat_time_t st_ctime; |
f15a2a12 CM |
104 | compat_ulong_t st_ctime_nsec; |
105 | compat_ulong_t __unused4[2]; | |
3dd681d9 WD |
106 | }; |
107 | ||
108 | struct compat_flock { | |
109 | short l_type; | |
110 | short l_whence; | |
111 | compat_off_t l_start; | |
112 | compat_off_t l_len; | |
113 | compat_pid_t l_pid; | |
114 | }; | |
115 | ||
116 | #define F_GETLK64 12 /* using 'struct flock64' */ | |
117 | #define F_SETLK64 13 | |
118 | #define F_SETLKW64 14 | |
119 | ||
120 | struct compat_flock64 { | |
121 | short l_type; | |
122 | short l_whence; | |
123 | compat_loff_t l_start; | |
124 | compat_loff_t l_len; | |
125 | compat_pid_t l_pid; | |
126 | }; | |
127 | ||
128 | struct compat_statfs { | |
129 | int f_type; | |
130 | int f_bsize; | |
131 | int f_blocks; | |
132 | int f_bfree; | |
133 | int f_bavail; | |
134 | int f_files; | |
135 | int f_ffree; | |
136 | compat_fsid_t f_fsid; | |
137 | int f_namelen; /* SunOS ignores this field. */ | |
138 | int f_frsize; | |
139 | int f_flags; | |
140 | int f_spare[4]; | |
141 | }; | |
142 | ||
143 | #define COMPAT_RLIM_INFINITY 0xffffffff | |
144 | ||
145 | typedef u32 compat_old_sigset_t; | |
146 | ||
147 | #define _COMPAT_NSIG 64 | |
148 | #define _COMPAT_NSIG_BPW 32 | |
149 | ||
150 | typedef u32 compat_sigset_word; | |
151 | ||
751f409d DV |
152 | typedef union compat_sigval { |
153 | compat_int_t sival_int; | |
154 | compat_uptr_t sival_ptr; | |
155 | } compat_sigval_t; | |
156 | ||
157 | typedef struct compat_siginfo { | |
158 | int si_signo; | |
159 | int si_errno; | |
160 | int si_code; | |
161 | ||
162 | union { | |
751f409d DV |
163 | int _pad[128/sizeof(int) - 3]; |
164 | ||
165 | /* kill() */ | |
166 | struct { | |
167 | compat_pid_t _pid; /* sender's pid */ | |
168 | __compat_uid32_t _uid; /* sender's uid */ | |
169 | } _kill; | |
170 | ||
171 | /* POSIX.1b timers */ | |
172 | struct { | |
173 | compat_timer_t _tid; /* timer id */ | |
174 | int _overrun; /* overrun count */ | |
175 | compat_sigval_t _sigval; /* same as below */ | |
176 | int _sys_private; /* not to be passed to user */ | |
177 | } _timer; | |
178 | ||
179 | /* POSIX.1b signals */ | |
180 | struct { | |
181 | compat_pid_t _pid; /* sender's pid */ | |
182 | __compat_uid32_t _uid; /* sender's uid */ | |
183 | compat_sigval_t _sigval; | |
184 | } _rt; | |
185 | ||
186 | /* SIGCHLD */ | |
187 | struct { | |
188 | compat_pid_t _pid; /* which child */ | |
189 | __compat_uid32_t _uid; /* sender's uid */ | |
190 | int _status; /* exit code */ | |
191 | compat_clock_t _utime; | |
192 | compat_clock_t _stime; | |
193 | } _sigchld; | |
194 | ||
195 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
196 | struct { | |
197 | compat_uptr_t _addr; /* faulting insn/memory ref. */ | |
198 | short _addr_lsb; /* LSB of the reported address */ | |
199 | } _sigfault; | |
200 | ||
201 | /* SIGPOLL */ | |
202 | struct { | |
203 | compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
204 | int _fd; | |
205 | } _sigpoll; | |
cc5e9097 AT |
206 | |
207 | /* SIGSYS */ | |
208 | struct { | |
209 | compat_uptr_t _call_addr; /* calling user insn */ | |
210 | int _syscall; /* triggering system call number */ | |
211 | compat_uint_t _arch; /* AUDIT_ARCH_* of syscall */ | |
212 | } _sigsys; | |
751f409d DV |
213 | } _sifields; |
214 | } compat_siginfo_t; | |
215 | ||
3dd681d9 WD |
216 | #define COMPAT_OFF_T_MAX 0x7fffffff |
217 | #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL | |
218 | ||
219 | /* | |
220 | * A pointer passed in from user mode. This should not | |
221 | * be used for syscall parameters, just declare them | |
222 | * as pointers because the syscall entry code will have | |
223 | * appropriately converted them already. | |
224 | */ | |
3dd681d9 WD |
225 | |
226 | static inline void __user *compat_ptr(compat_uptr_t uptr) | |
227 | { | |
228 | return (void __user *)(unsigned long)uptr; | |
229 | } | |
230 | ||
231 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) | |
232 | { | |
233 | return (u32)(unsigned long)uptr; | |
234 | } | |
235 | ||
adc235af | 236 | #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) |
9b064fc3 | 237 | |
3dd681d9 WD |
238 | static inline void __user *arch_compat_alloc_user_space(long len) |
239 | { | |
9b064fc3 | 240 | return (void __user *)compat_user_stack_pointer() - len; |
3dd681d9 WD |
241 | } |
242 | ||
243 | struct compat_ipc64_perm { | |
244 | compat_key_t key; | |
245 | __compat_uid32_t uid; | |
246 | __compat_gid32_t gid; | |
247 | __compat_uid32_t cuid; | |
248 | __compat_gid32_t cgid; | |
249 | unsigned short mode; | |
250 | unsigned short __pad1; | |
251 | unsigned short seq; | |
252 | unsigned short __pad2; | |
253 | compat_ulong_t unused1; | |
254 | compat_ulong_t unused2; | |
255 | }; | |
256 | ||
257 | struct compat_semid64_ds { | |
258 | struct compat_ipc64_perm sem_perm; | |
259 | compat_time_t sem_otime; | |
260 | compat_ulong_t __unused1; | |
261 | compat_time_t sem_ctime; | |
262 | compat_ulong_t __unused2; | |
263 | compat_ulong_t sem_nsems; | |
264 | compat_ulong_t __unused3; | |
265 | compat_ulong_t __unused4; | |
266 | }; | |
267 | ||
268 | struct compat_msqid64_ds { | |
269 | struct compat_ipc64_perm msg_perm; | |
270 | compat_time_t msg_stime; | |
271 | compat_ulong_t __unused1; | |
272 | compat_time_t msg_rtime; | |
273 | compat_ulong_t __unused2; | |
274 | compat_time_t msg_ctime; | |
275 | compat_ulong_t __unused3; | |
276 | compat_ulong_t msg_cbytes; | |
277 | compat_ulong_t msg_qnum; | |
278 | compat_ulong_t msg_qbytes; | |
279 | compat_pid_t msg_lspid; | |
280 | compat_pid_t msg_lrpid; | |
281 | compat_ulong_t __unused4; | |
282 | compat_ulong_t __unused5; | |
283 | }; | |
284 | ||
285 | struct compat_shmid64_ds { | |
286 | struct compat_ipc64_perm shm_perm; | |
287 | compat_size_t shm_segsz; | |
288 | compat_time_t shm_atime; | |
289 | compat_ulong_t __unused1; | |
290 | compat_time_t shm_dtime; | |
291 | compat_ulong_t __unused2; | |
292 | compat_time_t shm_ctime; | |
293 | compat_ulong_t __unused3; | |
294 | compat_pid_t shm_cpid; | |
295 | compat_pid_t shm_lpid; | |
296 | compat_ulong_t shm_nattch; | |
297 | compat_ulong_t __unused4; | |
298 | compat_ulong_t __unused5; | |
299 | }; | |
300 | ||
301 | static inline int is_compat_task(void) | |
302 | { | |
303 | return test_thread_flag(TIF_32BIT); | |
304 | } | |
305 | ||
306 | static inline int is_compat_thread(struct thread_info *thread) | |
307 | { | |
308 | return test_ti_thread_flag(thread, TIF_32BIT); | |
309 | } | |
310 | ||
311 | #else /* !CONFIG_COMPAT */ | |
312 | ||
3dd681d9 WD |
313 | static inline int is_compat_thread(struct thread_info *thread) |
314 | { | |
315 | return 0; | |
316 | } | |
317 | ||
318 | #endif /* CONFIG_COMPAT */ | |
319 | #endif /* __KERNEL__ */ | |
320 | #endif /* __ASM_COMPAT_H */ |