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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_COMPAT_H
3#define _ASM_COMPAT_H
4/*
5 * Architecture specific compatibility types
6 */
7#include <linux/thread_info.h>
8#include <linux/types.h>
9#include <asm/page.h>
10#include <asm/ptrace.h>
11
12#include <asm-generic/compat.h>
13
14#define COMPAT_USER_HZ 100
15#define COMPAT_UTS_MACHINE "mips\0\0\0"
16
17typedef s32 __compat_uid_t;
18typedef s32 __compat_gid_t;
19typedef __compat_uid_t __compat_uid32_t;
20typedef __compat_gid_t __compat_gid32_t;
21typedef u32 compat_mode_t;
22typedef u32 compat_dev_t;
23typedef u32 compat_nlink_t;
24typedef s32 compat_ipc_pid_t;
25typedef s32 compat_caddr_t;
26typedef struct {
27 s32 val[2];
28} compat_fsid_t;
29typedef s64 compat_s64;
30typedef u64 compat_u64;
31
32struct compat_stat {
33 compat_dev_t st_dev;
34 s32 st_pad1[3];
35 compat_ino_t st_ino;
36 compat_mode_t st_mode;
37 compat_nlink_t st_nlink;
38 __compat_uid_t st_uid;
39 __compat_gid_t st_gid;
40 compat_dev_t st_rdev;
41 s32 st_pad2[2];
42 compat_off_t st_size;
43 s32 st_pad3;
44 old_time32_t st_atime;
45 s32 st_atime_nsec;
46 old_time32_t st_mtime;
47 s32 st_mtime_nsec;
48 old_time32_t st_ctime;
49 s32 st_ctime_nsec;
50 s32 st_blksize;
51 s32 st_blocks;
52 s32 st_pad4[14];
53};
54
55struct compat_flock {
56 short l_type;
57 short l_whence;
58 compat_off_t l_start;
59 compat_off_t l_len;
60 s32 l_sysid;
61 compat_pid_t l_pid;
62 s32 pad[4];
63};
64
65#define F_GETLK64 33
66#define F_SETLK64 34
67#define F_SETLKW64 35
68
69struct compat_flock64 {
70 short l_type;
71 short l_whence;
72 compat_loff_t l_start;
73 compat_loff_t l_len;
74 compat_pid_t l_pid;
75};
76
77struct compat_statfs {
78 int f_type;
79 int f_bsize;
80 int f_frsize;
81 int f_blocks;
82 int f_bfree;
83 int f_files;
84 int f_ffree;
85 int f_bavail;
86 compat_fsid_t f_fsid;
87 int f_namelen;
88 int f_flags;
89 int f_spare[5];
90};
91
92#define COMPAT_RLIM_INFINITY 0x7fffffffUL
93
94typedef u32 compat_old_sigset_t; /* at least 32 bits */
95
96#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
97#define _COMPAT_NSIG_BPW 32
98
99typedef u32 compat_sigset_word;
100
101#define COMPAT_OFF_T_MAX 0x7fffffff
102
103/*
104 * A pointer passed in from user mode. This should not
105 * be used for syscall parameters, just declare them
106 * as pointers because the syscall entry code will have
107 * appropriately converted them already.
108 */
109
110static inline void __user *compat_ptr(compat_uptr_t uptr)
111{
112 /* cast to a __user pointer via "unsigned long" makes sparse happy */
113 return (void __user *)(unsigned long)(long)uptr;
114}
115
116static inline compat_uptr_t ptr_to_compat(void __user *uptr)
117{
118 return (u32)(unsigned long)uptr;
119}
120
121static inline void __user *arch_compat_alloc_user_space(long len)
122{
123 struct pt_regs *regs = (struct pt_regs *)
124 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
125
126 return (void __user *) (regs->regs[29] - len);
127}
128
129struct compat_ipc64_perm {
130 compat_key_t key;
131 __compat_uid32_t uid;
132 __compat_gid32_t gid;
133 __compat_uid32_t cuid;
134 __compat_gid32_t cgid;
135 compat_mode_t mode;
136 unsigned short seq;
137 unsigned short __pad2;
138 compat_ulong_t __unused1;
139 compat_ulong_t __unused2;
140};
141
142struct compat_semid64_ds {
143 struct compat_ipc64_perm sem_perm;
144 compat_ulong_t sem_otime;
145 compat_ulong_t sem_ctime;
146 compat_ulong_t sem_nsems;
147 compat_ulong_t sem_otime_high;
148 compat_ulong_t sem_ctime_high;
149};
150
151struct compat_msqid64_ds {
152 struct compat_ipc64_perm msg_perm;
153#ifndef CONFIG_CPU_LITTLE_ENDIAN
154 compat_ulong_t msg_stime_high;
155#endif
156 compat_ulong_t msg_stime;
157#ifdef CONFIG_CPU_LITTLE_ENDIAN
158 compat_ulong_t msg_stime_high;
159#endif
160#ifndef CONFIG_CPU_LITTLE_ENDIAN
161 compat_ulong_t msg_rtime_high;
162#endif
163 compat_ulong_t msg_rtime;
164#ifdef CONFIG_CPU_LITTLE_ENDIAN
165 compat_ulong_t msg_rtime_high;
166#endif
167#ifndef CONFIG_CPU_LITTLE_ENDIAN
168 compat_ulong_t msg_ctime_high;
169#endif
170 compat_ulong_t msg_ctime;
171#ifdef CONFIG_CPU_LITTLE_ENDIAN
172 compat_ulong_t msg_ctime_high;
173#endif
174 compat_ulong_t msg_cbytes;
175 compat_ulong_t msg_qnum;
176 compat_ulong_t msg_qbytes;
177 compat_pid_t msg_lspid;
178 compat_pid_t msg_lrpid;
179 compat_ulong_t __unused4;
180 compat_ulong_t __unused5;
181};
182
183struct compat_shmid64_ds {
184 struct compat_ipc64_perm shm_perm;
185 compat_size_t shm_segsz;
186 compat_ulong_t shm_atime;
187 compat_ulong_t shm_dtime;
188 compat_ulong_t shm_ctime;
189 compat_pid_t shm_cpid;
190 compat_pid_t shm_lpid;
191 compat_ulong_t shm_nattch;
192 compat_ushort_t shm_atime_high;
193 compat_ushort_t shm_dtime_high;
194 compat_ushort_t shm_ctime_high;
195 compat_ushort_t __unused2;
196};
197
198/* MIPS has unusual order of fields in stack_t */
199typedef struct compat_sigaltstack {
200 compat_uptr_t ss_sp;
201 compat_size_t ss_size;
202 int ss_flags;
203} compat_stack_t;
204#define compat_sigaltstack compat_sigaltstack
205
206static inline int is_compat_task(void)
207{
208 return test_thread_flag(TIF_32BIT_ADDR);
209}
210
211#endif /* _ASM_COMPAT_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_COMPAT_H
3#define _ASM_COMPAT_H
4/*
5 * Architecture specific compatibility types
6 */
7#include <linux/thread_info.h>
8#include <linux/types.h>
9#include <asm/page.h>
10#include <asm/ptrace.h>
11
12#include <asm-generic/compat.h>
13
14#define COMPAT_USER_HZ 100
15#define COMPAT_UTS_MACHINE "mips\0\0\0"
16
17typedef s32 __compat_uid_t;
18typedef s32 __compat_gid_t;
19typedef __compat_uid_t __compat_uid32_t;
20typedef __compat_gid_t __compat_gid32_t;
21typedef u32 compat_mode_t;
22typedef u32 compat_dev_t;
23typedef u32 compat_nlink_t;
24typedef s32 compat_ipc_pid_t;
25typedef s32 compat_caddr_t;
26typedef struct {
27 s32 val[2];
28} compat_fsid_t;
29typedef s64 compat_s64;
30typedef u64 compat_u64;
31
32struct compat_stat {
33 compat_dev_t st_dev;
34 s32 st_pad1[3];
35 compat_ino_t st_ino;
36 compat_mode_t st_mode;
37 compat_nlink_t st_nlink;
38 __compat_uid_t st_uid;
39 __compat_gid_t st_gid;
40 compat_dev_t st_rdev;
41 s32 st_pad2[2];
42 compat_off_t st_size;
43 s32 st_pad3;
44 old_time32_t st_atime;
45 s32 st_atime_nsec;
46 old_time32_t st_mtime;
47 s32 st_mtime_nsec;
48 old_time32_t st_ctime;
49 s32 st_ctime_nsec;
50 s32 st_blksize;
51 s32 st_blocks;
52 s32 st_pad4[14];
53};
54
55struct compat_flock {
56 short l_type;
57 short l_whence;
58 compat_off_t l_start;
59 compat_off_t l_len;
60 s32 l_sysid;
61 compat_pid_t l_pid;
62 s32 pad[4];
63};
64
65#define F_GETLK64 33
66#define F_SETLK64 34
67#define F_SETLKW64 35
68
69struct compat_flock64 {
70 short l_type;
71 short l_whence;
72 compat_loff_t l_start;
73 compat_loff_t l_len;
74 compat_pid_t l_pid;
75};
76
77struct compat_statfs {
78 int f_type;
79 int f_bsize;
80 int f_frsize;
81 int f_blocks;
82 int f_bfree;
83 int f_files;
84 int f_ffree;
85 int f_bavail;
86 compat_fsid_t f_fsid;
87 int f_namelen;
88 int f_flags;
89 int f_spare[5];
90};
91
92#define COMPAT_RLIM_INFINITY 0x7fffffffUL
93
94typedef u32 compat_old_sigset_t; /* at least 32 bits */
95
96#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
97#define _COMPAT_NSIG_BPW 32
98
99typedef u32 compat_sigset_word;
100
101#define COMPAT_OFF_T_MAX 0x7fffffff
102
103/*
104 * A pointer passed in from user mode. This should not
105 * be used for syscall parameters, just declare them
106 * as pointers because the syscall entry code will have
107 * appropriately converted them already.
108 */
109
110static inline void __user *compat_ptr(compat_uptr_t uptr)
111{
112 /* cast to a __user pointer via "unsigned long" makes sparse happy */
113 return (void __user *)(unsigned long)(long)uptr;
114}
115
116static inline compat_uptr_t ptr_to_compat(void __user *uptr)
117{
118 return (u32)(unsigned long)uptr;
119}
120
121static inline void __user *arch_compat_alloc_user_space(long len)
122{
123 struct pt_regs *regs = (struct pt_regs *)
124 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
125
126 return (void __user *) (regs->regs[29] - len);
127}
128
129struct compat_ipc64_perm {
130 compat_key_t key;
131 __compat_uid32_t uid;
132 __compat_gid32_t gid;
133 __compat_uid32_t cuid;
134 __compat_gid32_t cgid;
135 compat_mode_t mode;
136 unsigned short seq;
137 unsigned short __pad2;
138 compat_ulong_t __unused1;
139 compat_ulong_t __unused2;
140};
141
142struct compat_semid64_ds {
143 struct compat_ipc64_perm sem_perm;
144 compat_ulong_t sem_otime;
145 compat_ulong_t sem_ctime;
146 compat_ulong_t sem_nsems;
147 compat_ulong_t sem_otime_high;
148 compat_ulong_t sem_ctime_high;
149};
150
151struct compat_msqid64_ds {
152 struct compat_ipc64_perm msg_perm;
153#ifndef CONFIG_CPU_LITTLE_ENDIAN
154 compat_ulong_t msg_stime_high;
155#endif
156 compat_ulong_t msg_stime;
157#ifdef CONFIG_CPU_LITTLE_ENDIAN
158 compat_ulong_t msg_stime_high;
159#endif
160#ifndef CONFIG_CPU_LITTLE_ENDIAN
161 compat_ulong_t msg_rtime_high;
162#endif
163 compat_ulong_t msg_rtime;
164#ifdef CONFIG_CPU_LITTLE_ENDIAN
165 compat_ulong_t msg_rtime_high;
166#endif
167#ifndef CONFIG_CPU_LITTLE_ENDIAN
168 compat_ulong_t msg_ctime_high;
169#endif
170 compat_ulong_t msg_ctime;
171#ifdef CONFIG_CPU_LITTLE_ENDIAN
172 compat_ulong_t msg_ctime_high;
173#endif
174 compat_ulong_t msg_cbytes;
175 compat_ulong_t msg_qnum;
176 compat_ulong_t msg_qbytes;
177 compat_pid_t msg_lspid;
178 compat_pid_t msg_lrpid;
179 compat_ulong_t __unused4;
180 compat_ulong_t __unused5;
181};
182
183struct compat_shmid64_ds {
184 struct compat_ipc64_perm shm_perm;
185 compat_size_t shm_segsz;
186 compat_ulong_t shm_atime;
187 compat_ulong_t shm_dtime;
188 compat_ulong_t shm_ctime;
189 compat_pid_t shm_cpid;
190 compat_pid_t shm_lpid;
191 compat_ulong_t shm_nattch;
192 compat_ushort_t shm_atime_high;
193 compat_ushort_t shm_dtime_high;
194 compat_ushort_t shm_ctime_high;
195 compat_ushort_t __unused2;
196};
197
198/* MIPS has unusual order of fields in stack_t */
199typedef struct compat_sigaltstack {
200 compat_uptr_t ss_sp;
201 compat_size_t ss_size;
202 int ss_flags;
203} compat_stack_t;
204#define compat_sigaltstack compat_sigaltstack
205
206static inline int is_compat_task(void)
207{
208 return test_thread_flag(TIF_32BIT_ADDR);
209}
210
211#endif /* _ASM_COMPAT_H */