Merge tag 'kvm-s390-next-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / arch / powerpc / include / asm / compat.h
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 #include <asm-generic/compat.h>
12
13 #define COMPAT_USER_HZ          100
14 #ifdef __BIG_ENDIAN__
15 #define COMPAT_UTS_MACHINE      "ppc\0\0"
16 #else
17 #define COMPAT_UTS_MACHINE      "ppcle\0\0"
18 #endif
19
20 typedef u32             __compat_uid_t;
21 typedef u32             __compat_gid_t;
22 typedef u32             __compat_uid32_t;
23 typedef u32             __compat_gid32_t;
24 typedef u32             compat_mode_t;
25 typedef u32             compat_dev_t;
26 typedef s16             compat_nlink_t;
27 typedef u16             compat_ipc_pid_t;
28 typedef u32             compat_caddr_t;
29 typedef __kernel_fsid_t compat_fsid_t;
30 typedef s64             compat_s64;
31 typedef u64             compat_u64;
32
33 struct compat_stat {
34         compat_dev_t    st_dev;
35         compat_ino_t    st_ino;
36         compat_mode_t   st_mode;
37         compat_nlink_t  st_nlink;
38         __compat_uid32_t        st_uid;
39         __compat_gid32_t        st_gid;
40         compat_dev_t    st_rdev;
41         compat_off_t    st_size;
42         compat_off_t    st_blksize;
43         compat_off_t    st_blocks;
44         old_time32_t    st_atime;
45         u32             st_atime_nsec;
46         old_time32_t    st_mtime;
47         u32             st_mtime_nsec;
48         old_time32_t    st_ctime;
49         u32             st_ctime_nsec;
50         u32             __unused4[2];
51 };
52
53 struct compat_flock {
54         short           l_type;
55         short           l_whence;
56         compat_off_t    l_start;
57         compat_off_t    l_len;
58         compat_pid_t    l_pid;
59 };
60
61 #define F_GETLK64       12      /*  using 'struct flock64' */
62 #define F_SETLK64       13
63 #define F_SETLKW64      14
64
65 struct compat_flock64 {
66         short           l_type;
67         short           l_whence;
68         compat_loff_t   l_start;
69         compat_loff_t   l_len;
70         compat_pid_t    l_pid;
71 };
72
73 struct compat_statfs {
74         int             f_type;
75         int             f_bsize;
76         int             f_blocks;
77         int             f_bfree;
78         int             f_bavail;
79         int             f_files;
80         int             f_ffree;
81         compat_fsid_t   f_fsid;
82         int             f_namelen;      /* SunOS ignores this field. */
83         int             f_frsize;
84         int             f_flags;
85         int             f_spare[4];
86 };
87
88 #define COMPAT_RLIM_INFINITY            0xffffffff
89
90 typedef u32             compat_old_sigset_t;
91
92 #define _COMPAT_NSIG            64
93 #define _COMPAT_NSIG_BPW        32
94
95 typedef u32             compat_sigset_word;
96
97 #define COMPAT_OFF_T_MAX        0x7fffffff
98
99 static inline void __user *arch_compat_alloc_user_space(long len)
100 {
101         struct pt_regs *regs = current->thread.regs;
102         unsigned long usp = regs->gpr[1];
103
104         /*
105          * We can't access below the stack pointer in the 32bit ABI and
106          * can access 288 bytes in the 64bit big-endian ABI,
107          * or 512 bytes with the new ELFv2 little-endian ABI.
108          */
109         if (!is_32bit_task())
110                 usp -= USER_REDZONE_SIZE;
111
112         return (void __user *) (usp - len);
113 }
114
115 /*
116  * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
117  * it we may as well define it.
118  */
119 struct compat_ipc64_perm {
120         compat_key_t key;
121         __compat_uid_t uid;
122         __compat_gid_t gid;
123         __compat_uid_t cuid;
124         __compat_gid_t cgid;
125         compat_mode_t mode;
126         unsigned int seq;
127         unsigned int __pad2;
128         unsigned long __unused1;        /* yes they really are 64bit pads */
129         unsigned long __unused2;
130 };
131
132 struct compat_semid64_ds {
133         struct compat_ipc64_perm sem_perm;
134         unsigned int sem_otime_high;
135         unsigned int sem_otime;
136         unsigned int sem_ctime_high;
137         unsigned int sem_ctime;
138         compat_ulong_t sem_nsems;
139         compat_ulong_t __unused3;
140         compat_ulong_t __unused4;
141 };
142
143 struct compat_msqid64_ds {
144         struct compat_ipc64_perm msg_perm;
145         unsigned int msg_stime_high;
146         unsigned int msg_stime;
147         unsigned int msg_rtime_high;
148         unsigned int msg_rtime;
149         unsigned int msg_ctime_high;
150         unsigned int msg_ctime;
151         compat_ulong_t msg_cbytes;
152         compat_ulong_t msg_qnum;
153         compat_ulong_t msg_qbytes;
154         compat_pid_t msg_lspid;
155         compat_pid_t msg_lrpid;
156         compat_ulong_t __unused4;
157         compat_ulong_t __unused5;
158 };
159
160 struct compat_shmid64_ds {
161         struct compat_ipc64_perm shm_perm;
162         unsigned int shm_atime_high;
163         unsigned int shm_atime;
164         unsigned int shm_dtime_high;
165         unsigned int shm_dtime;
166         unsigned int shm_ctime_high;
167         unsigned int shm_ctime;
168         unsigned int __unused4;
169         compat_size_t shm_segsz;
170         compat_pid_t shm_cpid;
171         compat_pid_t shm_lpid;
172         compat_ulong_t shm_nattch;
173         compat_ulong_t __unused5;
174         compat_ulong_t __unused6;
175 };
176
177 static inline int is_compat_task(void)
178 {
179         return is_32bit_task();
180 }
181
182 #endif /* __KERNEL__ */
183 #endif /* _ASM_POWERPC_COMPAT_H */