fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall
[sfrench/cifs-2.6.git] / arch / sparc / include / asm / compat.h
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 #define COMPAT_USER_HZ          100
10 #define COMPAT_UTS_MACHINE      "sparc\0\0"
11
12 typedef u32             compat_size_t;
13 typedef s32             compat_ssize_t;
14 typedef s32             compat_time_t;
15 typedef s32             compat_clock_t;
16 typedef s32             compat_pid_t;
17 typedef u16             __compat_uid_t;
18 typedef u16             __compat_gid_t;
19 typedef u32             __compat_uid32_t;
20 typedef u32             __compat_gid32_t;
21 typedef u16             compat_mode_t;
22 typedef u32             compat_ino_t;
23 typedef u16             compat_dev_t;
24 typedef s32             compat_off_t;
25 typedef s64             compat_loff_t;
26 typedef s16             compat_nlink_t;
27 typedef u16             compat_ipc_pid_t;
28 typedef s32             compat_daddr_t;
29 typedef u32             compat_caddr_t;
30 typedef __kernel_fsid_t compat_fsid_t;
31 typedef s32             compat_key_t;
32 typedef s32             compat_timer_t;
33
34 typedef s32             compat_int_t;
35 typedef s32             compat_long_t;
36 typedef s64             compat_s64;
37 typedef u32             compat_uint_t;
38 typedef u32             compat_ulong_t;
39 typedef u64             compat_u64;
40 typedef u32             compat_uptr_t;
41
42 struct compat_timespec {
43         compat_time_t   tv_sec;
44         s32             tv_nsec;
45 };
46
47 struct compat_timeval {
48         compat_time_t   tv_sec;
49         s32             tv_usec;
50 };
51
52 struct compat_stat {
53         compat_dev_t    st_dev;
54         compat_ino_t    st_ino;
55         compat_mode_t   st_mode;
56         compat_nlink_t  st_nlink;
57         __compat_uid_t  st_uid;
58         __compat_gid_t  st_gid;
59         compat_dev_t    st_rdev;
60         compat_off_t    st_size;
61         compat_time_t   st_atime;
62         compat_ulong_t  st_atime_nsec;
63         compat_time_t   st_mtime;
64         compat_ulong_t  st_mtime_nsec;
65         compat_time_t   st_ctime;
66         compat_ulong_t  st_ctime_nsec;
67         compat_off_t    st_blksize;
68         compat_off_t    st_blocks;
69         u32             __unused4[2];
70 };
71
72 struct compat_stat64 {
73         unsigned long long      st_dev;
74
75         unsigned long long      st_ino;
76
77         unsigned int    st_mode;
78         unsigned int    st_nlink;
79
80         unsigned int    st_uid;
81         unsigned int    st_gid;
82
83         unsigned long long      st_rdev;
84
85         unsigned char   __pad3[8];
86
87         long long       st_size;
88         unsigned int    st_blksize;
89
90         unsigned char   __pad4[8];
91         unsigned int    st_blocks;
92
93         unsigned int    st_atime;
94         unsigned int    st_atime_nsec;
95
96         unsigned int    st_mtime;
97         unsigned int    st_mtime_nsec;
98
99         unsigned int    st_ctime;
100         unsigned int    st_ctime_nsec;
101
102         unsigned int    __unused4;
103         unsigned int    __unused5;
104 };
105
106 struct compat_flock {
107         short           l_type;
108         short           l_whence;
109         compat_off_t    l_start;
110         compat_off_t    l_len;
111         compat_pid_t    l_pid;
112         short           __unused;
113 };
114
115 #define F_GETLK64       12
116 #define F_SETLK64       13
117 #define F_SETLKW64      14
118
119 struct compat_flock64 {
120         short           l_type;
121         short           l_whence;
122         compat_loff_t   l_start;
123         compat_loff_t   l_len;
124         compat_pid_t    l_pid;
125         short           __unused;
126 };
127
128 struct compat_statfs {
129         int             f_type;
130         int             f_bsize;
131         int             f_blocks;
132         int             f_bfree;
133         int             f_bavail;
134         int             f_files;
135         int             f_ffree;
136         compat_fsid_t   f_fsid;
137         int             f_namelen;      /* SunOS ignores this field. */
138         int             f_frsize;
139         int             f_flags;
140         int             f_spare[4];
141 };
142
143 #define COMPAT_RLIM_INFINITY 0x7fffffff
144
145 typedef u32             compat_old_sigset_t;
146
147 #define _COMPAT_NSIG            64
148 #define _COMPAT_NSIG_BPW        32
149
150 typedef u32             compat_sigset_word;
151
152 typedef union compat_sigval {
153         compat_int_t    sival_int;
154         compat_uptr_t   sival_ptr;
155 } compat_sigval_t;
156
157 #define SI_PAD_SIZE32   (128/sizeof(int) - 3)
158
159 typedef struct compat_siginfo {
160         int si_signo;
161         int si_errno;
162         int si_code;
163
164         union {
165                 int _pad[SI_PAD_SIZE32];
166
167                 /* kill() */
168                 struct {
169                         compat_pid_t _pid;              /* sender's pid */
170                         unsigned int _uid;              /* sender's uid */
171                 } _kill;
172
173                 /* POSIX.1b timers */
174                 struct {
175                         compat_timer_t _tid;            /* timer id */
176                         int _overrun;                   /* overrun count */
177                         compat_sigval_t _sigval;        /* same as below */
178                         int _sys_private;       /* not to be passed to user */
179                 } _timer;
180
181                 /* POSIX.1b signals */
182                 struct {
183                         compat_pid_t _pid;              /* sender's pid */
184                         unsigned int _uid;              /* sender's uid */
185                         compat_sigval_t _sigval;
186                 } _rt;
187
188                 /* SIGCHLD */
189                 struct {
190                         compat_pid_t _pid;              /* which child */
191                         unsigned int _uid;              /* sender's uid */
192                         int _status;                    /* exit code */
193                         compat_clock_t _utime;
194                         compat_clock_t _stime;
195                 } _sigchld;
196
197                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
198                 struct {
199                         u32 _addr; /* faulting insn/memory ref. */
200                         int _trapno;
201                 } _sigfault;
202
203                 /* SIGPOLL */
204                 struct {
205                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
206                         int _fd;
207                 } _sigpoll;
208         } _sifields;
209 } compat_siginfo_t;
210
211 #define COMPAT_OFF_T_MAX        0x7fffffff
212
213 /*
214  * A pointer passed in from user mode. This should not
215  * be used for syscall parameters, just declare them
216  * as pointers because the syscall entry code will have
217  * appropriately converted them already.
218  */
219
220 static inline void __user *compat_ptr(compat_uptr_t uptr)
221 {
222         return (void __user *)(unsigned long)uptr;
223 }
224
225 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
226 {
227         return (u32)(unsigned long)uptr;
228 }
229
230 static inline void __user *arch_compat_alloc_user_space(long len)
231 {
232         struct pt_regs *regs = current_thread_info()->kregs;
233         unsigned long usp = regs->u_regs[UREG_I6];
234
235         if (test_thread_64bit_stack(usp))
236                 usp += STACK_BIAS;
237
238         if (test_thread_flag(TIF_32BIT))
239                 usp &= 0xffffffffUL;
240
241         usp -= len;
242         usp &= ~0x7UL;
243
244         return (void __user *) usp;
245 }
246
247 struct compat_ipc64_perm {
248         compat_key_t key;
249         __compat_uid32_t uid;
250         __compat_gid32_t gid;
251         __compat_uid32_t cuid;
252         __compat_gid32_t cgid;
253         unsigned short __pad1;
254         compat_mode_t mode;
255         unsigned short __pad2;
256         unsigned short seq;
257         unsigned long __unused1;        /* yes they really are 64bit pads */
258         unsigned long __unused2;
259 };
260
261 struct compat_semid64_ds {
262         struct compat_ipc64_perm sem_perm;
263         unsigned int    __pad1;
264         compat_time_t   sem_otime;
265         unsigned int    __pad2;
266         compat_time_t   sem_ctime;
267         u32             sem_nsems;
268         u32             __unused1;
269         u32             __unused2;
270 };
271
272 struct compat_msqid64_ds {
273         struct compat_ipc64_perm msg_perm;
274         unsigned int    __pad1;
275         compat_time_t   msg_stime;
276         unsigned int    __pad2;
277         compat_time_t   msg_rtime;
278         unsigned int    __pad3;
279         compat_time_t   msg_ctime;
280         unsigned int    msg_cbytes;
281         unsigned int    msg_qnum;
282         unsigned int    msg_qbytes;
283         compat_pid_t    msg_lspid;
284         compat_pid_t    msg_lrpid;
285         unsigned int    __unused1;
286         unsigned int    __unused2;
287 };
288
289 struct compat_shmid64_ds {
290         struct compat_ipc64_perm shm_perm;
291         unsigned int    __pad1;
292         compat_time_t   shm_atime;
293         unsigned int    __pad2;
294         compat_time_t   shm_dtime;
295         unsigned int    __pad3;
296         compat_time_t   shm_ctime;
297         compat_size_t   shm_segsz;
298         compat_pid_t    shm_cpid;
299         compat_pid_t    shm_lpid;
300         unsigned int    shm_nattch;
301         unsigned int    __unused1;
302         unsigned int    __unused2;
303 };
304
305 static inline int is_compat_task(void)
306 {
307         return test_thread_flag(TIF_32BIT);
308 }
309
310 static inline bool in_compat_syscall(void)
311 {
312         /* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
313         return pt_regs_trap_type(current_pt_regs()) == 0x110;
314 }
315 #define in_compat_syscall in_compat_syscall
316
317 #endif /* _ASM_SPARC64_COMPAT_H */