arch/s390/include/asm/compat.h

   1 #ifndef _ASM_S390X_COMPAT_H
   2 #define _ASM_S390X_COMPAT_H
   3 /*
   4  * Architecture specific compatibility types
   5  */
   6 #include <linux/types.h>
   7 #include <linux/sched.h>
   8 #include <linux/thread_info.h>
   9
  10 #define PSW32_MASK_PER          0x40000000UL
  11 #define PSW32_MASK_DAT          0x04000000UL
  12 #define PSW32_MASK_IO           0x02000000UL
  13 #define PSW32_MASK_EXT          0x01000000UL
  14 #define PSW32_MASK_KEY          0x00F00000UL
  15 #define PSW32_MASK_MCHECK       0x00040000UL
  16 #define PSW32_MASK_WAIT         0x00020000UL
  17 #define PSW32_MASK_PSTATE       0x00010000UL
  18 #define PSW32_MASK_ASC          0x0000C000UL
  19 #define PSW32_MASK_CC           0x00003000UL
  20 #define PSW32_MASK_PM           0x00000f00UL
  21
  22 #define PSW32_ADDR_AMODE31      0x80000000UL
  23 #define PSW32_ADDR_INSN         0x7FFFFFFFUL
  24
  25 #define PSW32_BASE_BITS         0x00080000UL
  26
  27 #define PSW32_ASC_PRIMARY       0x00000000UL
  28 #define PSW32_ASC_ACCREG        0x00004000UL
  29 #define PSW32_ASC_SECONDARY     0x00008000UL
  30 #define PSW32_ASC_HOME          0x0000C000UL
  31
  32 #define PSW32_MASK_MERGE(CURRENT,NEW) \
  33         (((CURRENT) & ~(PSW32_MASK_CC|PSW32_MASK_PM)) | \
  34          ((NEW) & (PSW32_MASK_CC|PSW32_MASK_PM)))
  35
  36 extern long psw32_user_bits;
  37
  38 #define COMPAT_USER_HZ          100
  39 #define COMPAT_UTS_MACHINE      "s390\0\0\0\0"
  40
  41 typedef u32             compat_size_t;
  42 typedef s32             compat_ssize_t;
  43 typedef s32             compat_time_t;
  44 typedef s32             compat_clock_t;
  45 typedef s32             compat_pid_t;
  46 typedef u16             __compat_uid_t;
  47 typedef u16             __compat_gid_t;
  48 typedef u32             __compat_uid32_t;
  49 typedef u32             __compat_gid32_t;
  50 typedef u16             compat_mode_t;
  51 typedef u32             compat_ino_t;
  52 typedef u16             compat_dev_t;
  53 typedef s32             compat_off_t;
  54 typedef s64             compat_loff_t;
  55 typedef u16             compat_nlink_t;
  56 typedef u16             compat_ipc_pid_t;
  57 typedef s32             compat_daddr_t;
  58 typedef u32             compat_caddr_t;
  59 typedef __kernel_fsid_t compat_fsid_t;
  60 typedef s32             compat_key_t;
  61 typedef s32             compat_timer_t;
  62
  63 typedef s32             compat_int_t;
  64 typedef s32             compat_long_t;
  65 typedef s64             compat_s64;
  66 typedef u32             compat_uint_t;
  67 typedef u32             compat_ulong_t;
  68 typedef u64             compat_u64;
  69
  70 struct compat_timespec {
  71         compat_time_t   tv_sec;
  72         s32             tv_nsec;
  73 };
  74
  75 struct compat_timeval {
  76         compat_time_t   tv_sec;
  77         s32             tv_usec;
  78 };
  79
  80 struct compat_stat {
  81         compat_dev_t    st_dev;
  82         u16             __pad1;
  83         compat_ino_t    st_ino;
  84         compat_mode_t   st_mode;
  85         compat_nlink_t  st_nlink;
  86         __compat_uid_t  st_uid;
  87         __compat_gid_t  st_gid;
  88         compat_dev_t    st_rdev;
  89         u16             __pad2;
  90         u32             st_size;
  91         u32             st_blksize;
  92         u32             st_blocks;
  93         u32             st_atime;
  94         u32             st_atime_nsec;
  95         u32             st_mtime;
  96         u32             st_mtime_nsec;
  97         u32             st_ctime;
  98         u32             st_ctime_nsec;
  99         u32             __unused4;
 100         u32             __unused5;
 101 };
 102
 103 struct compat_flock {
 104         short           l_type;
 105         short           l_whence;
 106         compat_off_t    l_start;
 107         compat_off_t    l_len;
 108         compat_pid_t    l_pid;
 109 };
 110
 111 #define F_GETLK64       12
 112 #define F_SETLK64       13
 113 #define F_SETLKW64      14
 114
 115 struct compat_flock64 {
 116         short           l_type;
 117         short           l_whence;
 118         compat_loff_t   l_start;
 119         compat_loff_t   l_len;
 120         compat_pid_t    l_pid;
 121 };
 122
 123 struct compat_statfs {
 124         s32             f_type;
 125         s32             f_bsize;
 126         s32             f_blocks;
 127         s32             f_bfree;
 128         s32             f_bavail;
 129         s32             f_files;
 130         s32             f_ffree;
 131         compat_fsid_t   f_fsid;
 132         s32             f_namelen;
 133         s32             f_frsize;
 134         s32             f_flags;
 135         s32             f_spare[5];
 136 };
 137
 138 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 139 #define COMPAT_RLIM_INFINITY            0xffffffff
 140
 141 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 142
 143 #define _COMPAT_NSIG            64
 144 #define _COMPAT_NSIG_BPW        32
 145
 146 typedef u32             compat_sigset_word;
 147
 148 #define COMPAT_OFF_T_MAX        0x7fffffff
 149 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 150
 151 /*
 152  * A pointer passed in from user mode. This should not
 153  * be used for syscall parameters, just declare them
 154  * as pointers because the syscall entry code will have
 155  * appropriately converted them already.
 156  */
 157 typedef u32             compat_uptr_t;
 158
 159 static inline void __user *compat_ptr(compat_uptr_t uptr)
 160 {
 161         return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
 162 }
 163
 164 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 165 {
 166         return (u32)(unsigned long)uptr;
 167 }
 168
 169 #ifdef CONFIG_COMPAT
 170
 171 static inline int is_compat_task(void)
 172 {
 173         return is_32bit_task();
 174 }
 175
 176 #else
 177
 178 static inline int is_compat_task(void)
 179 {
 180         return 0;
 181 }
 182
 183 #endif
 184
 185 static inline void __user *arch_compat_alloc_user_space(long len)
 186 {
 187         unsigned long stack;
 188
 189         stack = KSTK_ESP(current);
 190         if (is_compat_task())
 191                 stack &= 0x7fffffffUL;
 192         return (void __user *) (stack - len);
 193 }
 194
 195 struct compat_ipc64_perm {
 196         compat_key_t key;
 197         __compat_uid32_t uid;
 198         __compat_gid32_t gid;
 199         __compat_uid32_t cuid;
 200         __compat_gid32_t cgid;
 201         compat_mode_t mode;
 202         unsigned short __pad1;
 203         unsigned short seq;
 204         unsigned short __pad2;
 205         unsigned int __unused1;
 206         unsigned int __unused2;
 207 };
 208
 209 struct compat_semid64_ds {
 210         struct compat_ipc64_perm sem_perm;
 211         compat_time_t  sem_otime;
 212         compat_ulong_t __pad1;
 213         compat_time_t  sem_ctime;
 214         compat_ulong_t __pad2;
 215         compat_ulong_t sem_nsems;
 216         compat_ulong_t __unused1;
 217         compat_ulong_t __unused2;
 218 };
 219
 220 struct compat_msqid64_ds {
 221         struct compat_ipc64_perm msg_perm;
 222         compat_time_t   msg_stime;
 223         compat_ulong_t __pad1;
 224         compat_time_t   msg_rtime;
 225         compat_ulong_t __pad2;
 226         compat_time_t   msg_ctime;
 227         compat_ulong_t __pad3;
 228         compat_ulong_t msg_cbytes;
 229         compat_ulong_t msg_qnum;
 230         compat_ulong_t msg_qbytes;
 231         compat_pid_t   msg_lspid;
 232         compat_pid_t   msg_lrpid;
 233         compat_ulong_t __unused1;
 234         compat_ulong_t __unused2;
 235 };
 236
 237 struct compat_shmid64_ds {
 238         struct compat_ipc64_perm shm_perm;
 239         compat_size_t  shm_segsz;
 240         compat_time_t  shm_atime;
 241         compat_ulong_t __pad1;
 242         compat_time_t  shm_dtime;
 243         compat_ulong_t __pad2;
 244         compat_time_t  shm_ctime;
 245         compat_ulong_t __pad3;
 246         compat_pid_t   shm_cpid;
 247         compat_pid_t   shm_lpid;
 248         compat_ulong_t shm_nattch;
 249         compat_ulong_t __unused1;
 250         compat_ulong_t __unused2;
 251 };
 252 #endif /* _ASM_S390X_COMPAT_H */