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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_COMPAT_H
3#define _ASM_POWERPC_COMPAT_H
4#ifdef __KERNEL__
5/*
6 * Architecture specific compatibility types
7 */
8#include <linux/types.h>
9#include <linux/sched.h>
10
11#define COMPAT_USER_HZ 100
12#ifdef __BIG_ENDIAN__
13#define COMPAT_UTS_MACHINE "ppc\0\0"
14#else
15#define COMPAT_UTS_MACHINE "ppcle\0\0"
16#endif
17
18typedef u32 compat_size_t;
19typedef s32 compat_ssize_t;
20typedef s32 compat_clock_t;
21typedef s32 compat_pid_t;
22typedef u32 __compat_uid_t;
23typedef u32 __compat_gid_t;
24typedef u32 __compat_uid32_t;
25typedef u32 __compat_gid32_t;
26typedef u32 compat_mode_t;
27typedef u32 compat_ino_t;
28typedef u32 compat_dev_t;
29typedef s32 compat_off_t;
30typedef s64 compat_loff_t;
31typedef s16 compat_nlink_t;
32typedef u16 compat_ipc_pid_t;
33typedef s32 compat_daddr_t;
34typedef u32 compat_caddr_t;
35typedef __kernel_fsid_t compat_fsid_t;
36typedef s32 compat_key_t;
37typedef s32 compat_timer_t;
38
39typedef s32 compat_int_t;
40typedef s32 compat_long_t;
41typedef s64 compat_s64;
42typedef u32 compat_uint_t;
43typedef u32 compat_ulong_t;
44typedef u64 compat_u64;
45typedef u32 compat_uptr_t;
46
47struct compat_stat {
48 compat_dev_t st_dev;
49 compat_ino_t st_ino;
50 compat_mode_t st_mode;
51 compat_nlink_t st_nlink;
52 __compat_uid32_t st_uid;
53 __compat_gid32_t st_gid;
54 compat_dev_t st_rdev;
55 compat_off_t st_size;
56 compat_off_t st_blksize;
57 compat_off_t st_blocks;
58 compat_time_t st_atime;
59 u32 st_atime_nsec;
60 compat_time_t st_mtime;
61 u32 st_mtime_nsec;
62 compat_time_t st_ctime;
63 u32 st_ctime_nsec;
64 u32 __unused4[2];
65};
66
67struct compat_flock {
68 short l_type;
69 short l_whence;
70 compat_off_t l_start;
71 compat_off_t l_len;
72 compat_pid_t l_pid;
73};
74
75#define F_GETLK64 12 /* using 'struct flock64' */
76#define F_SETLK64 13
77#define F_SETLKW64 14
78
79struct compat_flock64 {
80 short l_type;
81 short l_whence;
82 compat_loff_t l_start;
83 compat_loff_t l_len;
84 compat_pid_t l_pid;
85};
86
87struct compat_statfs {
88 int f_type;
89 int f_bsize;
90 int f_blocks;
91 int f_bfree;
92 int f_bavail;
93 int f_files;
94 int f_ffree;
95 compat_fsid_t f_fsid;
96 int f_namelen; /* SunOS ignores this field. */
97 int f_frsize;
98 int f_flags;
99 int f_spare[4];
100};
101
102#define COMPAT_RLIM_INFINITY 0xffffffff
103
104typedef u32 compat_old_sigset_t;
105
106#define _COMPAT_NSIG 64
107#define _COMPAT_NSIG_BPW 32
108
109typedef u32 compat_sigset_word;
110
111#define COMPAT_OFF_T_MAX 0x7fffffff
112
113/*
114 * A pointer passed in from user mode. This should not
115 * be used for syscall parameters, just declare them
116 * as pointers because the syscall entry code will have
117 * appropriately converted them already.
118 */
119
120static inline void __user *compat_ptr(compat_uptr_t uptr)
121{
122 return (void __user *)(unsigned long)uptr;
123}
124
125static inline compat_uptr_t ptr_to_compat(void __user *uptr)
126{
127 return (u32)(unsigned long)uptr;
128}
129
130static inline void __user *arch_compat_alloc_user_space(long len)
131{
132 struct pt_regs *regs = current->thread.regs;
133 unsigned long usp = regs->gpr[1];
134
135 /*
136 * We can't access below the stack pointer in the 32bit ABI and
137 * can access 288 bytes in the 64bit big-endian ABI,
138 * or 512 bytes with the new ELFv2 little-endian ABI.
139 */
140 if (!is_32bit_task())
141 usp -= USER_REDZONE_SIZE;
142
143 return (void __user *) (usp - len);
144}
145
146/*
147 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
148 * it we may as well define it.
149 */
150struct compat_ipc64_perm {
151 compat_key_t key;
152 __compat_uid_t uid;
153 __compat_gid_t gid;
154 __compat_uid_t cuid;
155 __compat_gid_t cgid;
156 compat_mode_t mode;
157 unsigned int seq;
158 unsigned int __pad2;
159 unsigned long __unused1; /* yes they really are 64bit pads */
160 unsigned long __unused2;
161};
162
163struct compat_semid64_ds {
164 struct compat_ipc64_perm sem_perm;
165 unsigned int sem_otime_high;
166 unsigned int sem_otime;
167 unsigned int sem_ctime_high;
168 unsigned int sem_ctime;
169 compat_ulong_t sem_nsems;
170 compat_ulong_t __unused3;
171 compat_ulong_t __unused4;
172};
173
174struct compat_msqid64_ds {
175 struct compat_ipc64_perm msg_perm;
176 unsigned int msg_stime_high;
177 unsigned int msg_stime;
178 unsigned int msg_rtime_high;
179 unsigned int msg_rtime;
180 unsigned int msg_ctime_high;
181 unsigned int msg_ctime;
182 compat_ulong_t msg_cbytes;
183 compat_ulong_t msg_qnum;
184 compat_ulong_t msg_qbytes;
185 compat_pid_t msg_lspid;
186 compat_pid_t msg_lrpid;
187 compat_ulong_t __unused4;
188 compat_ulong_t __unused5;
189};
190
191struct compat_shmid64_ds {
192 struct compat_ipc64_perm shm_perm;
193 unsigned int shm_atime_high;
194 unsigned int shm_atime;
195 unsigned int shm_dtime_high;
196 unsigned int shm_dtime;
197 unsigned int shm_ctime_high;
198 unsigned int shm_ctime;
199 unsigned int __unused4;
200 compat_size_t shm_segsz;
201 compat_pid_t shm_cpid;
202 compat_pid_t shm_lpid;
203 compat_ulong_t shm_nattch;
204 compat_ulong_t __unused5;
205 compat_ulong_t __unused6;
206};
207
208static inline int is_compat_task(void)
209{
210 return is_32bit_task();
211}
212
213#endif /* __KERNEL__ */
214#endif /* _ASM_POWERPC_COMPAT_H */