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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
David Gibson8882a4d2005-11-09 13:38:01 +11002#ifndef _ASM_POWERPC_COMPAT_H
3#define _ASM_POWERPC_COMPAT_H
Arnd Bergmann88ced032005-12-16 22:43:46 +01004#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -07005/*
6 * Architecture specific compatibility types
7 */
8#include <linux/types.h>
9#include <linux/sched.h>
10
Arnd Bergmannfb373972018-04-18 22:01:26 +020011#include <asm-generic/compat.h>
12
Christoph Hellwige28cbf22010-03-10 15:21:19 -080013#define COMPAT_USER_HZ 100
Anton Blanchard422b9b92014-03-06 16:10:11 +110014#ifdef __BIG_ENDIAN__
Christoph Hellwige28cbf22010-03-10 15:21:19 -080015#define COMPAT_UTS_MACHINE "ppc\0\0"
Anton Blanchard422b9b92014-03-06 16:10:11 +110016#else
17#define COMPAT_UTS_MACHINE "ppcle\0\0"
18#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
Stephen Rothwell202e5972005-09-06 15:16:40 -070020typedef u32 __compat_uid_t;
21typedef u32 __compat_gid_t;
22typedef u32 __compat_uid32_t;
23typedef u32 __compat_gid32_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024typedef u32 compat_mode_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070025typedef u32 compat_dev_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070026typedef s16 compat_nlink_t;
27typedef u16 compat_ipc_pid_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070028typedef u32 compat_caddr_t;
29typedef __kernel_fsid_t compat_fsid_t;
Arnd Bergmann4b777582007-07-15 23:41:11 -070030typedef s64 compat_s64;
Arnd Bergmann4b777582007-07-15 23:41:11 -070031typedef u64 compat_u64;
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
Linus Torvalds1da177e2005-04-16 15:20:36 -070033struct compat_stat {
34 compat_dev_t st_dev;
35 compat_ino_t st_ino;
36 compat_mode_t st_mode;
David Gibson8882a4d2005-11-09 13:38:01 +110037 compat_nlink_t st_nlink;
Stephen Rothwell202e5972005-09-06 15:16:40 -070038 __compat_uid32_t st_uid;
39 __compat_gid32_t st_gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 compat_dev_t st_rdev;
41 compat_off_t st_size;
42 compat_off_t st_blksize;
43 compat_off_t st_blocks;
Arnd Bergmann9afc5ee2018-07-13 12:52:28 +020044 old_time32_t st_atime;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 u32 st_atime_nsec;
Arnd Bergmann9afc5ee2018-07-13 12:52:28 +020046 old_time32_t st_mtime;
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 u32 st_mtime_nsec;
Arnd Bergmann9afc5ee2018-07-13 12:52:28 +020048 old_time32_t st_ctime;
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 u32 st_ctime_nsec;
50 u32 __unused4[2];
51};
52
53struct 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
65struct 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
73struct 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;
Eric W. Biederman1448c722011-10-17 13:40:02 -070084 int f_flags;
85 int f_spare[4];
Linus Torvalds1da177e2005-04-16 15:20:36 -070086};
87
Linus Torvalds1da177e2005-04-16 15:20:36 -070088#define COMPAT_RLIM_INFINITY 0xffffffff
89
90typedef u32 compat_old_sigset_t;
91
92#define _COMPAT_NSIG 64
93#define _COMPAT_NSIG_BPW 32
94
95typedef u32 compat_sigset_word;
96
97#define COMPAT_OFF_T_MAX 0x7fffffff
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
99/*
100 * A pointer passed in from user mode. This should not
101 * be used for syscall parameters, just declare them
102 * as pointers because the syscall entry code will have
Marcin Ĺšlusarz8b3de0d2008-02-03 16:32:51 +0200103 * appropriately converted them already.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
106static inline void __user *compat_ptr(compat_uptr_t uptr)
107{
108 return (void __user *)(unsigned long)uptr;
109}
110
Al Viro29e646d2006-02-01 05:28:09 -0500111static inline compat_uptr_t ptr_to_compat(void __user *uptr)
112{
113 return (u32)(unsigned long)uptr;
114}
115
H. Peter Anvinc41d68a2010-09-07 16:16:18 -0700116static inline void __user *arch_compat_alloc_user_space(long len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117{
118 struct pt_regs *regs = current->thread.regs;
119 unsigned long usp = regs->gpr[1];
120
121 /*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300122 * We can't access below the stack pointer in the 32bit ABI and
Paul Mackerras573ebfa2014-02-26 17:07:38 +1100123 * can access 288 bytes in the 64bit big-endian ABI,
124 * or 512 bytes with the new ELFv2 little-endian ABI.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 */
Denis Kirjanovcab175f2010-08-27 03:49:11 +0000126 if (!is_32bit_task())
Paul Mackerras573ebfa2014-02-26 17:07:38 +1100127 usp -= USER_REDZONE_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
129 return (void __user *) (usp - len);
130}
131
132/*
133 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
134 * it we may as well define it.
135 */
136struct compat_ipc64_perm {
137 compat_key_t key;
Stephen Rothwell202e5972005-09-06 15:16:40 -0700138 __compat_uid_t uid;
139 __compat_gid_t gid;
140 __compat_uid_t cuid;
141 __compat_gid_t cgid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 compat_mode_t mode;
143 unsigned int seq;
144 unsigned int __pad2;
145 unsigned long __unused1; /* yes they really are 64bit pads */
146 unsigned long __unused2;
147};
148
149struct compat_semid64_ds {
150 struct compat_ipc64_perm sem_perm;
Arnd Bergmannd0b67de2015-05-05 23:19:43 +0200151 unsigned int sem_otime_high;
152 unsigned int sem_otime;
153 unsigned int sem_ctime_high;
154 unsigned int sem_ctime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 compat_ulong_t sem_nsems;
156 compat_ulong_t __unused3;
157 compat_ulong_t __unused4;
158};
159
160struct compat_msqid64_ds {
161 struct compat_ipc64_perm msg_perm;
Arnd Bergmannd0b67de2015-05-05 23:19:43 +0200162 unsigned int msg_stime_high;
163 unsigned int msg_stime;
164 unsigned int msg_rtime_high;
165 unsigned int msg_rtime;
166 unsigned int msg_ctime_high;
167 unsigned int msg_ctime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 compat_ulong_t msg_cbytes;
169 compat_ulong_t msg_qnum;
170 compat_ulong_t msg_qbytes;
171 compat_pid_t msg_lspid;
172 compat_pid_t msg_lrpid;
173 compat_ulong_t __unused4;
174 compat_ulong_t __unused5;
175};
176
177struct compat_shmid64_ds {
178 struct compat_ipc64_perm shm_perm;
Arnd Bergmannd0b67de2015-05-05 23:19:43 +0200179 unsigned int shm_atime_high;
180 unsigned int shm_atime;
181 unsigned int shm_dtime_high;
182 unsigned int shm_dtime;
183 unsigned int shm_ctime_high;
184 unsigned int shm_ctime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 unsigned int __unused4;
186 compat_size_t shm_segsz;
187 compat_pid_t shm_cpid;
188 compat_pid_t shm_lpid;
189 compat_ulong_t shm_nattch;
190 compat_ulong_t __unused5;
191 compat_ulong_t __unused6;
192};
193
Roland McGrath5b101742009-02-27 23:25:54 -0800194static inline int is_compat_task(void)
195{
Denis Kirjanovcab175f2010-08-27 03:49:11 +0000196 return is_32bit_task();
Roland McGrath5b101742009-02-27 23:25:54 -0800197}
198
Arnd Bergmann88ced032005-12-16 22:43:46 +0100199#endif /* __KERNEL__ */
David Gibson8882a4d2005-11-09 13:38:01 +1100200#endif /* _ASM_POWERPC_COMPAT_H */