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 #define COMPAT_OFF_T_MAX        0x7fffffff
 153
 154 /*
 155  * A pointer passed in from user mode. This should not
 156  * be used for syscall parameters, just declare them
 157  * as pointers because the syscall entry code will have
 158  * appropriately converted them already.
 159  */
 160
 161 static inline void __user *compat_ptr(compat_uptr_t uptr)
 162 {
 163         return (void __user *)(unsigned long)uptr;
 164 }
 165
 166 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 167 {
 168         return (u32)(unsigned long)uptr;
 169 }
 170
 171 static inline void __user *arch_compat_alloc_user_space(long len)
 172 {
 173         struct pt_regs *regs = current_thread_info()->kregs;
 174         unsigned long usp = regs->u_regs[UREG_I6];
 175
 176         if (test_thread_64bit_stack(usp))
 177                 usp += STACK_BIAS;
 178
 179         if (test_thread_flag(TIF_32BIT))
 180                 usp &= 0xffffffffUL;
 181
 182         usp -= len;
 183         usp &= ~0x7UL;
 184
 185         return (void __user *) usp;
 186 }
 187
 188 struct compat_ipc64_perm {
 189         compat_key_t key;
 190         __compat_uid32_t uid;
 191         __compat_gid32_t gid;
 192         __compat_uid32_t cuid;
 193         __compat_gid32_t cgid;
 194         unsigned short __pad1;
 195         compat_mode_t mode;
 196         unsigned short __pad2;
 197         unsigned short seq;
 198         unsigned long __unused1;        /* yes they really are 64bit pads */
 199         unsigned long __unused2;
 200 };
 201
 202 struct compat_semid64_ds {
 203         struct compat_ipc64_perm sem_perm;
 204         unsigned int    __pad1;
 205         compat_time_t   sem_otime;
 206         unsigned int    __pad2;
 207         compat_time_t   sem_ctime;
 208         u32             sem_nsems;
 209         u32             __unused1;
 210         u32             __unused2;
 211 };
 212
 213 struct compat_msqid64_ds {
 214         struct compat_ipc64_perm msg_perm;
 215         unsigned int    __pad1;
 216         compat_time_t   msg_stime;
 217         unsigned int    __pad2;
 218         compat_time_t   msg_rtime;
 219         unsigned int    __pad3;
 220         compat_time_t   msg_ctime;
 221         unsigned int    msg_cbytes;
 222         unsigned int    msg_qnum;
 223         unsigned int    msg_qbytes;
 224         compat_pid_t    msg_lspid;
 225         compat_pid_t    msg_lrpid;
 226         unsigned int    __unused1;
 227         unsigned int    __unused2;
 228 };
 229
 230 struct compat_shmid64_ds {
 231         struct compat_ipc64_perm shm_perm;
 232         unsigned int    __pad1;
 233         compat_time_t   shm_atime;
 234         unsigned int    __pad2;
 235         compat_time_t   shm_dtime;
 236         unsigned int    __pad3;
 237         compat_time_t   shm_ctime;
 238         compat_size_t   shm_segsz;
 239         compat_pid_t    shm_cpid;
 240         compat_pid_t    shm_lpid;
 241         unsigned int    shm_nattch;
 242         unsigned int    __unused1;
 243         unsigned int    __unused2;
 244 };
 245
 246 static inline int is_compat_task(void)
 247 {
 248         return test_thread_flag(TIF_32BIT);
 249 }
 250
 251 static inline bool in_compat_syscall(void)
 252 {
 253         /* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
 254         return pt_regs_trap_type(current_pt_regs()) == 0x110;
 255 }
 256 #define in_compat_syscall in_compat_syscall
 257
 258 #endif /* _ASM_SPARC64_COMPAT_H */