xref: /openbmc/linux/arch/sparc/include/asm/compat.h (revision fc772314)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_SPARC64_COMPAT_H
3 #define _ASM_SPARC64_COMPAT_H
4 /*
5  * Architecture specific compatibility types
6  */
7 #include <linux/types.h>
8 
9 #include <asm-generic/compat.h>
10 
11 #define COMPAT_USER_HZ		100
12 #define COMPAT_UTS_MACHINE	"sparc\0\0"
13 
14 typedef u16		__compat_uid_t;
15 typedef u16		__compat_gid_t;
16 typedef u32		__compat_uid32_t;
17 typedef u32		__compat_gid32_t;
18 typedef u16		compat_mode_t;
19 typedef u16		compat_dev_t;
20 typedef s16		compat_nlink_t;
21 typedef u16		compat_ipc_pid_t;
22 typedef u32		compat_caddr_t;
23 typedef __kernel_fsid_t	compat_fsid_t;
24 typedef s64		compat_s64;
25 typedef u64		compat_u64;
26 struct compat_stat {
27 	compat_dev_t	st_dev;
28 	compat_ino_t	st_ino;
29 	compat_mode_t	st_mode;
30 	compat_nlink_t	st_nlink;
31 	__compat_uid_t	st_uid;
32 	__compat_gid_t	st_gid;
33 	compat_dev_t	st_rdev;
34 	compat_off_t	st_size;
35 	old_time32_t	st_atime;
36 	compat_ulong_t	st_atime_nsec;
37 	old_time32_t	st_mtime;
38 	compat_ulong_t	st_mtime_nsec;
39 	old_time32_t	st_ctime;
40 	compat_ulong_t	st_ctime_nsec;
41 	compat_off_t	st_blksize;
42 	compat_off_t	st_blocks;
43 	u32		__unused4[2];
44 };
45 
46 struct compat_stat64 {
47 	unsigned long long	st_dev;
48 
49 	unsigned long long	st_ino;
50 
51 	unsigned int	st_mode;
52 	unsigned int	st_nlink;
53 
54 	unsigned int	st_uid;
55 	unsigned int	st_gid;
56 
57 	unsigned long long	st_rdev;
58 
59 	unsigned char	__pad3[8];
60 
61 	long long	st_size;
62 	unsigned int	st_blksize;
63 
64 	unsigned char	__pad4[8];
65 	unsigned int	st_blocks;
66 
67 	unsigned int	st_atime;
68 	unsigned int	st_atime_nsec;
69 
70 	unsigned int	st_mtime;
71 	unsigned int	st_mtime_nsec;
72 
73 	unsigned int	st_ctime;
74 	unsigned int	st_ctime_nsec;
75 
76 	unsigned int	__unused4;
77 	unsigned int	__unused5;
78 };
79 
80 struct compat_flock {
81 	short		l_type;
82 	short		l_whence;
83 	compat_off_t	l_start;
84 	compat_off_t	l_len;
85 	compat_pid_t	l_pid;
86 	short		__unused;
87 };
88 
89 #define F_GETLK64	12
90 #define F_SETLK64	13
91 #define F_SETLKW64	14
92 
93 struct compat_flock64 {
94 	short		l_type;
95 	short		l_whence;
96 	compat_loff_t	l_start;
97 	compat_loff_t	l_len;
98 	compat_pid_t	l_pid;
99 	short		__unused;
100 };
101 
102 struct compat_statfs {
103 	int		f_type;
104 	int		f_bsize;
105 	int		f_blocks;
106 	int		f_bfree;
107 	int		f_bavail;
108 	int		f_files;
109 	int		f_ffree;
110 	compat_fsid_t	f_fsid;
111 	int		f_namelen;	/* SunOS ignores this field. */
112 	int		f_frsize;
113 	int		f_flags;
114 	int		f_spare[4];
115 };
116 
117 #define COMPAT_RLIM_INFINITY 0x7fffffff
118 
119 typedef u32		compat_old_sigset_t;
120 
121 #define _COMPAT_NSIG		64
122 #define _COMPAT_NSIG_BPW	32
123 
124 typedef u32		compat_sigset_word;
125 
126 #define COMPAT_OFF_T_MAX	0x7fffffff
127 
128 #ifdef CONFIG_COMPAT
129 static inline void __user *arch_compat_alloc_user_space(long len)
130 {
131 	struct pt_regs *regs = current_thread_info()->kregs;
132 	unsigned long usp = regs->u_regs[UREG_I6];
133 
134 	if (test_thread_64bit_stack(usp))
135 		usp += STACK_BIAS;
136 
137 	if (test_thread_flag(TIF_32BIT))
138 		usp &= 0xffffffffUL;
139 
140 	usp -= len;
141 	usp &= ~0x7UL;
142 
143 	return (void __user *) usp;
144 }
145 #endif
146 
147 struct compat_ipc64_perm {
148 	compat_key_t key;
149 	__compat_uid32_t uid;
150 	__compat_gid32_t gid;
151 	__compat_uid32_t cuid;
152 	__compat_gid32_t cgid;
153 	unsigned short __pad1;
154 	compat_mode_t mode;
155 	unsigned short __pad2;
156 	unsigned short seq;
157 	unsigned long __unused1;	/* yes they really are 64bit pads */
158 	unsigned long __unused2;
159 };
160 
161 struct compat_semid64_ds {
162 	struct compat_ipc64_perm sem_perm;
163 	unsigned int	sem_otime_high;
164 	unsigned int	sem_otime;
165 	unsigned int	sem_ctime_high;
166 	unsigned int	sem_ctime;
167 	u32		sem_nsems;
168 	u32		__unused1;
169 	u32		__unused2;
170 };
171 
172 struct compat_msqid64_ds {
173 	struct compat_ipc64_perm msg_perm;
174 	unsigned int	msg_stime_high;
175 	unsigned int	msg_stime;
176 	unsigned int	msg_rtime_high;
177 	unsigned int	msg_rtime;
178 	unsigned int	msg_ctime_high;
179 	unsigned int	msg_ctime;
180 	unsigned int	msg_cbytes;
181 	unsigned int	msg_qnum;
182 	unsigned int	msg_qbytes;
183 	compat_pid_t	msg_lspid;
184 	compat_pid_t	msg_lrpid;
185 	unsigned int	__unused1;
186 	unsigned int	__unused2;
187 };
188 
189 struct compat_shmid64_ds {
190 	struct compat_ipc64_perm shm_perm;
191 	unsigned int	shm_atime_high;
192 	unsigned int	shm_atime;
193 	unsigned int	shm_dtime_high;
194 	unsigned int	shm_dtime;
195 	unsigned int	shm_ctime_high;
196 	unsigned int	shm_ctime;
197 	compat_size_t	shm_segsz;
198 	compat_pid_t	shm_cpid;
199 	compat_pid_t	shm_lpid;
200 	unsigned int	shm_nattch;
201 	unsigned int	__unused1;
202 	unsigned int	__unused2;
203 };
204 
205 #ifdef CONFIG_COMPAT
206 static inline int is_compat_task(void)
207 {
208 	return test_thread_flag(TIF_32BIT);
209 }
210 
211 static inline bool in_compat_syscall(void)
212 {
213 	/* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
214 	return pt_regs_trap_type(current_pt_regs()) == 0x110;
215 }
216 #define in_compat_syscall in_compat_syscall
217 #endif
218 
219 #endif /* _ASM_SPARC64_COMPAT_H */
220