This source file includes following definitions.
- compat_ptr
- ptr_to_compat
- is_compat_task
- arch_compat_alloc_user_space
1
2 #ifndef _ASM_S390X_COMPAT_H
3 #define _ASM_S390X_COMPAT_H
4
5
6
7 #include <linux/types.h>
8 #include <linux/sched.h>
9 #include <linux/sched/task_stack.h>
10 #include <linux/thread_info.h>
11
12 #include <asm-generic/compat.h>
13
14 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
15 typeof(0?(__force t)0:0ULL), u64))
16
17 #define __SC_DELOUSE(t,v) ({ \
18 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
19 (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
20 })
21
22 #define PSW32_MASK_PER 0x40000000UL
23 #define PSW32_MASK_DAT 0x04000000UL
24 #define PSW32_MASK_IO 0x02000000UL
25 #define PSW32_MASK_EXT 0x01000000UL
26 #define PSW32_MASK_KEY 0x00F00000UL
27 #define PSW32_MASK_BASE 0x00080000UL
28 #define PSW32_MASK_MCHECK 0x00040000UL
29 #define PSW32_MASK_WAIT 0x00020000UL
30 #define PSW32_MASK_PSTATE 0x00010000UL
31 #define PSW32_MASK_ASC 0x0000C000UL
32 #define PSW32_MASK_CC 0x00003000UL
33 #define PSW32_MASK_PM 0x00000f00UL
34 #define PSW32_MASK_RI 0x00000080UL
35
36 #define PSW32_MASK_USER 0x0000FF00UL
37
38 #define PSW32_ADDR_AMODE 0x80000000UL
39 #define PSW32_ADDR_INSN 0x7FFFFFFFUL
40
41 #define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
42
43 #define PSW32_ASC_PRIMARY 0x00000000UL
44 #define PSW32_ASC_ACCREG 0x00004000UL
45 #define PSW32_ASC_SECONDARY 0x00008000UL
46 #define PSW32_ASC_HOME 0x0000C000UL
47
48 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
49 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
50 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
51 PSW32_ASC_PRIMARY)
52
53 #define COMPAT_USER_HZ 100
54 #define COMPAT_UTS_MACHINE "s390\0\0\0\0"
55
56 typedef u16 __compat_uid_t;
57 typedef u16 __compat_gid_t;
58 typedef u32 __compat_uid32_t;
59 typedef u32 __compat_gid32_t;
60 typedef u16 compat_mode_t;
61 typedef u16 compat_dev_t;
62 typedef u16 compat_nlink_t;
63 typedef u16 compat_ipc_pid_t;
64 typedef u32 compat_caddr_t;
65 typedef __kernel_fsid_t compat_fsid_t;
66 typedef s64 compat_s64;
67 typedef u64 compat_u64;
68
69 typedef struct {
70 u32 mask;
71 u32 addr;
72 } __aligned(8) psw_compat_t;
73
74 typedef struct {
75 psw_compat_t psw;
76 u32 gprs[NUM_GPRS];
77 u32 acrs[NUM_ACRS];
78 u32 orig_gpr2;
79 } s390_compat_regs;
80
81 typedef struct {
82 u32 gprs_high[NUM_GPRS];
83 } s390_compat_regs_high;
84
85 struct compat_stat {
86 compat_dev_t st_dev;
87 u16 __pad1;
88 compat_ino_t st_ino;
89 compat_mode_t st_mode;
90 compat_nlink_t st_nlink;
91 __compat_uid_t st_uid;
92 __compat_gid_t st_gid;
93 compat_dev_t st_rdev;
94 u16 __pad2;
95 u32 st_size;
96 u32 st_blksize;
97 u32 st_blocks;
98 u32 st_atime;
99 u32 st_atime_nsec;
100 u32 st_mtime;
101 u32 st_mtime_nsec;
102 u32 st_ctime;
103 u32 st_ctime_nsec;
104 u32 __unused4;
105 u32 __unused5;
106 };
107
108 struct compat_flock {
109 short l_type;
110 short l_whence;
111 compat_off_t l_start;
112 compat_off_t l_len;
113 compat_pid_t l_pid;
114 };
115
116 #define F_GETLK64 12
117 #define F_SETLK64 13
118 #define F_SETLKW64 14
119
120 struct compat_flock64 {
121 short l_type;
122 short l_whence;
123 compat_loff_t l_start;
124 compat_loff_t l_len;
125 compat_pid_t l_pid;
126 };
127
128 struct compat_statfs {
129 u32 f_type;
130 u32 f_bsize;
131 u32 f_blocks;
132 u32 f_bfree;
133 u32 f_bavail;
134 u32 f_files;
135 u32 f_ffree;
136 compat_fsid_t f_fsid;
137 u32 f_namelen;
138 u32 f_frsize;
139 u32 f_flags;
140 u32 f_spare[4];
141 };
142
143 struct compat_statfs64 {
144 u32 f_type;
145 u32 f_bsize;
146 u64 f_blocks;
147 u64 f_bfree;
148 u64 f_bavail;
149 u64 f_files;
150 u64 f_ffree;
151 compat_fsid_t f_fsid;
152 u32 f_namelen;
153 u32 f_frsize;
154 u32 f_flags;
155 u32 f_spare[4];
156 };
157
158 #define COMPAT_RLIM_INFINITY 0xffffffff
159
160 typedef u32 compat_old_sigset_t;
161
162 #define _COMPAT_NSIG 64
163 #define _COMPAT_NSIG_BPW 32
164
165 typedef u32 compat_sigset_word;
166
167 #define COMPAT_OFF_T_MAX 0x7fffffff
168
169
170
171
172
173
174
175
176 static inline void __user *compat_ptr(compat_uptr_t uptr)
177 {
178 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
179 }
180
181 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
182 {
183 return (u32)(unsigned long)uptr;
184 }
185
186 #ifdef CONFIG_COMPAT
187
188 static inline int is_compat_task(void)
189 {
190 return test_thread_flag(TIF_31BIT);
191 }
192
193 static inline void __user *arch_compat_alloc_user_space(long len)
194 {
195 unsigned long stack;
196
197 stack = KSTK_ESP(current);
198 if (is_compat_task())
199 stack &= 0x7fffffffUL;
200 return (void __user *) (stack - len);
201 }
202
203 #endif
204
205 struct compat_ipc64_perm {
206 compat_key_t key;
207 __compat_uid32_t uid;
208 __compat_gid32_t gid;
209 __compat_uid32_t cuid;
210 __compat_gid32_t cgid;
211 compat_mode_t mode;
212 unsigned short __pad1;
213 unsigned short seq;
214 unsigned short __pad2;
215 unsigned int __unused1;
216 unsigned int __unused2;
217 };
218
219 struct compat_semid64_ds {
220 struct compat_ipc64_perm sem_perm;
221 compat_ulong_t sem_otime;
222 compat_ulong_t sem_otime_high;
223 compat_ulong_t sem_ctime;
224 compat_ulong_t sem_ctime_high;
225 compat_ulong_t sem_nsems;
226 compat_ulong_t __unused1;
227 compat_ulong_t __unused2;
228 };
229
230 struct compat_msqid64_ds {
231 struct compat_ipc64_perm msg_perm;
232 compat_ulong_t msg_stime;
233 compat_ulong_t msg_stime_high;
234 compat_ulong_t msg_rtime;
235 compat_ulong_t msg_rtime_high;
236 compat_ulong_t msg_ctime;
237 compat_ulong_t msg_ctime_high;
238 compat_ulong_t msg_cbytes;
239 compat_ulong_t msg_qnum;
240 compat_ulong_t msg_qbytes;
241 compat_pid_t msg_lspid;
242 compat_pid_t msg_lrpid;
243 compat_ulong_t __unused1;
244 compat_ulong_t __unused2;
245 };
246
247 struct compat_shmid64_ds {
248 struct compat_ipc64_perm shm_perm;
249 compat_size_t shm_segsz;
250 compat_ulong_t shm_atime;
251 compat_ulong_t shm_atime_high;
252 compat_ulong_t shm_dtime;
253 compat_ulong_t shm_dtime_high;
254 compat_ulong_t shm_ctime;
255 compat_ulong_t shm_ctime_high;
256 compat_pid_t shm_cpid;
257 compat_pid_t shm_lpid;
258 compat_ulong_t shm_nattch;
259 compat_ulong_t __unused1;
260 compat_ulong_t __unused2;
261 };
262 #endif