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 __TYPE_IS_PTR(t) (!__builtin_types_compatible_p(typeof(0?(t)0:0ULL), u64))
  11
  12 #define __SC_DELOUSE(t,v) ({ \
  13         BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
  14         (t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
  15 })
  16
  17 #define PSW32_MASK_PER          0x40000000UL
  18 #define PSW32_MASK_DAT          0x04000000UL
  19 #define PSW32_MASK_IO           0x02000000UL
  20 #define PSW32_MASK_EXT          0x01000000UL
  21 #define PSW32_MASK_KEY          0x00F00000UL
  22 #define PSW32_MASK_BASE         0x00080000UL    /* Always one */
  23 #define PSW32_MASK_MCHECK       0x00040000UL
  24 #define PSW32_MASK_WAIT         0x00020000UL
  25 #define PSW32_MASK_PSTATE       0x00010000UL
  26 #define PSW32_MASK_ASC          0x0000C000UL
  27 #define PSW32_MASK_CC           0x00003000UL
  28 #define PSW32_MASK_PM           0x00000f00UL
  29 #define PSW32_MASK_RI           0x00000080UL
  30
  31 #define PSW32_MASK_USER         0x0000FF00UL
  32
  33 #define PSW32_ADDR_AMODE        0x80000000UL
  34 #define PSW32_ADDR_INSN         0x7FFFFFFFUL
  35
  36 #define PSW32_DEFAULT_KEY       (((u32) PAGE_DEFAULT_ACC) << 20)
  37
  38 #define PSW32_ASC_PRIMARY       0x00000000UL
  39 #define PSW32_ASC_ACCREG        0x00004000UL
  40 #define PSW32_ASC_SECONDARY     0x00008000UL
  41 #define PSW32_ASC_HOME          0x0000C000UL
  42
  43 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
  44                          PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
  45                          PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
  46                          PSW32_ASC_PRIMARY)
  47
  48 #define COMPAT_USER_HZ          100
  49 #define COMPAT_UTS_MACHINE      "s390\0\0\0\0"
  50
  51 typedef u32             compat_size_t;
  52 typedef s32             compat_ssize_t;
  53 typedef s32             compat_time_t;
  54 typedef s32             compat_clock_t;
  55 typedef s32             compat_pid_t;
  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 u32             compat_ino_t;
  62 typedef u16             compat_dev_t;
  63 typedef s32             compat_off_t;
  64 typedef s64             compat_loff_t;
  65 typedef u16             compat_nlink_t;
  66 typedef u16             compat_ipc_pid_t;
  67 typedef s32             compat_daddr_t;
  68 typedef u32             compat_caddr_t;
  69 typedef __kernel_fsid_t compat_fsid_t;
  70 typedef s32             compat_key_t;
  71 typedef s32             compat_timer_t;
  72
  73 typedef s32             compat_int_t;
  74 typedef s32             compat_long_t;
  75 typedef s64             compat_s64;
  76 typedef u32             compat_uint_t;
  77 typedef u32             compat_ulong_t;
  78 typedef u64             compat_u64;
  79 typedef u32             compat_uptr_t;
  80
  81 typedef struct {
  82         u32 mask;
  83         u32 addr;
  84 } __aligned(8) psw_compat_t;
  85
  86 typedef struct {
  87         psw_compat_t psw;
  88         u32 gprs[NUM_GPRS];
  89         u32 acrs[NUM_ACRS];
  90         u32 orig_gpr2;
  91 } s390_compat_regs;
  92
  93 typedef struct {
  94         u32 gprs_high[NUM_GPRS];
  95 } s390_compat_regs_high;
  96
  97 struct compat_timespec {
  98         compat_time_t   tv_sec;
  99         s32             tv_nsec;
 100 };
 101
 102 struct compat_timeval {
 103         compat_time_t   tv_sec;
 104         s32             tv_usec;
 105 };
 106
 107 struct compat_stat {
 108         compat_dev_t    st_dev;
 109         u16             __pad1;
 110         compat_ino_t    st_ino;
 111         compat_mode_t   st_mode;
 112         compat_nlink_t  st_nlink;
 113         __compat_uid_t  st_uid;
 114         __compat_gid_t  st_gid;
 115         compat_dev_t    st_rdev;
 116         u16             __pad2;
 117         u32             st_size;
 118         u32             st_blksize;
 119         u32             st_blocks;
 120         u32             st_atime;
 121         u32             st_atime_nsec;
 122         u32             st_mtime;
 123         u32             st_mtime_nsec;
 124         u32             st_ctime;
 125         u32             st_ctime_nsec;
 126         u32             __unused4;
 127         u32             __unused5;
 128 };
 129
 130 struct compat_flock {
 131         short           l_type;
 132         short           l_whence;
 133         compat_off_t    l_start;
 134         compat_off_t    l_len;
 135         compat_pid_t    l_pid;
 136 };
 137
 138 #define F_GETLK64       12
 139 #define F_SETLK64       13
 140 #define F_SETLKW64      14
 141
 142 struct compat_flock64 {
 143         short           l_type;
 144         short           l_whence;
 145         compat_loff_t   l_start;
 146         compat_loff_t   l_len;
 147         compat_pid_t    l_pid;
 148 };
 149
 150 struct compat_statfs {
 151         u32             f_type;
 152         u32             f_bsize;
 153         u32             f_blocks;
 154         u32             f_bfree;
 155         u32             f_bavail;
 156         u32             f_files;
 157         u32             f_ffree;
 158         compat_fsid_t   f_fsid;
 159         u32             f_namelen;
 160         u32             f_frsize;
 161         u32             f_flags;
 162         u32             f_spare[4];
 163 };
 164
 165 struct compat_statfs64 {
 166         u32             f_type;
 167         u32             f_bsize;
 168         u64             f_blocks;
 169         u64             f_bfree;
 170         u64             f_bavail;
 171         u64             f_files;
 172         u64             f_ffree;
 173         compat_fsid_t   f_fsid;
 174         u32             f_namelen;
 175         u32             f_frsize;
 176         u32             f_flags;
 177         u32             f_spare[4];
 178 };
 179
 180 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 181 #define COMPAT_RLIM_INFINITY            0xffffffff
 182
 183 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 184
 185 #define _COMPAT_NSIG            64
 186 #define _COMPAT_NSIG_BPW        32
 187
 188 typedef u32             compat_sigset_word;
 189
 190 typedef union compat_sigval {
 191         compat_int_t    sival_int;
 192         compat_uptr_t   sival_ptr;
 193 } compat_sigval_t;
 194
 195 typedef struct compat_siginfo {
 196         int     si_signo;
 197         int     si_errno;
 198         int     si_code;
 199
 200         union {
 201                 int _pad[128/sizeof(int) - 3];
 202
 203                 /* kill() */
 204                 struct {
 205                         pid_t   _pid;   /* sender's pid */
 206                         uid_t   _uid;   /* sender's uid */
 207                 } _kill;
 208
 209                 /* POSIX.1b timers */
 210                 struct {
 211                         compat_timer_t _tid;            /* timer id */
 212                         int _overrun;                   /* overrun count */
 213                         compat_sigval_t _sigval;        /* same as below */
 214                         int _sys_private;       /* not to be passed to user */
 215                 } _timer;
 216
 217                 /* POSIX.1b signals */
 218                 struct {
 219                         pid_t                   _pid;   /* sender's pid */
 220                         uid_t                   _uid;   /* sender's uid */
 221                         compat_sigval_t         _sigval;
 222                 } _rt;
 223
 224                 /* SIGCHLD */
 225                 struct {
 226                         pid_t                   _pid;   /* which child */
 227                         uid_t                   _uid;   /* sender's uid */
 228                         int                     _status;/* exit code */
 229                         compat_clock_t          _utime;
 230                         compat_clock_t          _stime;
 231                 } _sigchld;
 232
 233                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 234                 struct {
 235                         __u32   _addr;  /* faulting insn/memory ref. - pointer */
 236                 } _sigfault;
 237
 238                 /* SIGPOLL */
 239                 struct {
 240                         int     _band;  /* POLL_IN, POLL_OUT, POLL_MSG */
 241                         int     _fd;
 242                 } _sigpoll;
 243         } _sifields;
 244 } compat_siginfo_t;
 245
 246 /*
 247  * How these fields are to be accessed.
 248  */
 249 #define si_pid          _sifields._kill._pid
 250 #define si_uid          _sifields._kill._uid
 251 #define si_status       _sifields._sigchld._status
 252 #define si_utime        _sifields._sigchld._utime
 253 #define si_stime        _sifields._sigchld._stime
 254 #define si_value        _sifields._rt._sigval
 255 #define si_int          _sifields._rt._sigval.sival_int
 256 #define si_ptr          _sifields._rt._sigval.sival_ptr
 257 #define si_addr         _sifields._sigfault._addr
 258 #define si_band         _sifields._sigpoll._band
 259 #define si_fd           _sifields._sigpoll._fd
 260 #define si_tid          _sifields._timer._tid
 261 #define si_overrun      _sifields._timer._overrun
 262
 263 #define COMPAT_OFF_T_MAX        0x7fffffff
 264 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 265
 266 /*
 267  * A pointer passed in from user mode. This should not
 268  * be used for syscall parameters, just declare them
 269  * as pointers because the syscall entry code will have
 270  * appropriately converted them already.
 271  */
 272
 273 static inline void __user *compat_ptr(compat_uptr_t uptr)
 274 {
 275         return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
 276 }
 277
 278 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 279 {
 280         return (u32)(unsigned long)uptr;
 281 }
 282
 283 #ifdef CONFIG_COMPAT
 284
 285 static inline int is_compat_task(void)
 286 {
 287         return test_thread_flag(TIF_31BIT);
 288 }
 289
 290 static inline void __user *arch_compat_alloc_user_space(long len)
 291 {
 292         unsigned long stack;
 293
 294         stack = KSTK_ESP(current);
 295         if (is_compat_task())
 296                 stack &= 0x7fffffffUL;
 297         return (void __user *) (stack - len);
 298 }
 299
 300 #endif
 301
 302 struct compat_ipc64_perm {
 303         compat_key_t key;
 304         __compat_uid32_t uid;
 305         __compat_gid32_t gid;
 306         __compat_uid32_t cuid;
 307         __compat_gid32_t cgid;
 308         compat_mode_t mode;
 309         unsigned short __pad1;
 310         unsigned short seq;
 311         unsigned short __pad2;
 312         unsigned int __unused1;
 313         unsigned int __unused2;
 314 };
 315
 316 struct compat_semid64_ds {
 317         struct compat_ipc64_perm sem_perm;
 318         compat_time_t  sem_otime;
 319         compat_ulong_t __pad1;
 320         compat_time_t  sem_ctime;
 321         compat_ulong_t __pad2;
 322         compat_ulong_t sem_nsems;
 323         compat_ulong_t __unused1;
 324         compat_ulong_t __unused2;
 325 };
 326
 327 struct compat_msqid64_ds {
 328         struct compat_ipc64_perm msg_perm;
 329         compat_time_t   msg_stime;
 330         compat_ulong_t __pad1;
 331         compat_time_t   msg_rtime;
 332         compat_ulong_t __pad2;
 333         compat_time_t   msg_ctime;
 334         compat_ulong_t __pad3;
 335         compat_ulong_t msg_cbytes;
 336         compat_ulong_t msg_qnum;
 337         compat_ulong_t msg_qbytes;
 338         compat_pid_t   msg_lspid;
 339         compat_pid_t   msg_lrpid;
 340         compat_ulong_t __unused1;
 341         compat_ulong_t __unused2;
 342 };
 343
 344 struct compat_shmid64_ds {
 345         struct compat_ipc64_perm shm_perm;
 346         compat_size_t  shm_segsz;
 347         compat_time_t  shm_atime;
 348         compat_ulong_t __pad1;
 349         compat_time_t  shm_dtime;
 350         compat_ulong_t __pad2;
 351         compat_time_t  shm_ctime;
 352         compat_ulong_t __pad3;
 353         compat_pid_t   shm_cpid;
 354         compat_pid_t   shm_lpid;
 355         compat_ulong_t shm_nattch;
 356         compat_ulong_t __unused1;
 357         compat_ulong_t __unused2;
 358 };
 359 #endif /* _ASM_S390X_COMPAT_H */