include/asm-mips/compat.h

   1 #ifndef _ASM_COMPAT_H
   2 #define _ASM_COMPAT_H
   3 /*
   4  * Architecture specific compatibility types
   5  */
   6 #include <linux/types.h>
   7 #include <asm/page.h>
   8
   9 #define COMPAT_USER_HZ  100
  10
  11 typedef u32             compat_size_t;
  12 typedef s32             compat_ssize_t;
  13 typedef s32             compat_time_t;
  14 typedef s32             compat_clock_t;
  15 typedef s32             compat_suseconds_t;
  16
  17 typedef s32             compat_pid_t;
  18 typedef s32             __compat_uid_t;
  19 typedef s32             __compat_gid_t;
  20 typedef __compat_uid_t  __compat_uid32_t;
  21 typedef __compat_gid_t  __compat_gid32_t;
  22 typedef u32             compat_mode_t;
  23 typedef u32             compat_ino_t;
  24 typedef u32             compat_dev_t;
  25 typedef s32             compat_off_t;
  26 typedef s64             compat_loff_t;
  27 typedef u32             compat_nlink_t;
  28 typedef s32             compat_ipc_pid_t;
  29 typedef s32             compat_daddr_t;
  30 typedef s32             compat_caddr_t;
  31 typedef struct {
  32         s32     val[2];
  33 } compat_fsid_t;
  34 typedef s32             compat_timer_t;
  35
  36 typedef s32             compat_int_t;
  37 typedef s32             compat_long_t;
  38 typedef u32             compat_uint_t;
  39 typedef u32             compat_ulong_t;
  40
  41 struct compat_timespec {
  42         compat_time_t   tv_sec;
  43         s32             tv_nsec;
  44 };
  45
  46 struct compat_timeval {
  47         compat_time_t   tv_sec;
  48         s32             tv_usec;
  49 };
  50
  51 struct compat_stat {
  52         compat_dev_t    st_dev;
  53         s32             st_pad1[3];
  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         s32             st_pad2[2];
  61         compat_off_t    st_size;
  62         s32             st_pad3;
  63         compat_time_t   st_atime;
  64         s32             st_atime_nsec;
  65         compat_time_t   st_mtime;
  66         s32             st_mtime_nsec;
  67         compat_time_t   st_ctime;
  68         s32             st_ctime_nsec;
  69         s32             st_blksize;
  70         s32             st_blocks;
  71         s32             st_pad4[14];
  72 };
  73
  74 struct compat_flock {
  75         short           l_type;
  76         short           l_whence;
  77         compat_off_t    l_start;
  78         compat_off_t    l_len;
  79         s32             l_sysid;
  80         compat_pid_t    l_pid;
  81         short           __unused;
  82         s32             pad[4];
  83 };
  84
  85 #define F_GETLK64       33
  86 #define F_SETLK64       34
  87 #define F_SETLKW64      35
  88
  89 struct compat_flock64 {
  90         short           l_type;
  91         short           l_whence;
  92         compat_loff_t   l_start;
  93         compat_loff_t   l_len;
  94         compat_pid_t    l_pid;
  95 };
  96
  97 struct compat_statfs {
  98         int             f_type;
  99         int             f_bsize;
 100         int             f_frsize;
 101         int             f_blocks;
 102         int             f_bfree;
 103         int             f_files;
 104         int             f_ffree;
 105         int             f_bavail;
 106         compat_fsid_t   f_fsid;
 107         int             f_namelen;
 108         int             f_spare[6];
 109 };
 110
 111 #define COMPAT_RLIM_INFINITY    0x7fffffffUL
 112
 113 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 114
 115 #define _COMPAT_NSIG            128             /* Don't ask !$@#% ...  */
 116 #define _COMPAT_NSIG_BPW        32
 117
 118 typedef u32             compat_sigset_word;
 119
 120 #define COMPAT_OFF_T_MAX        0x7fffffff
 121 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 122
 123 /*
 124  * A pointer passed in from user mode. This should not
 125  * be used for syscall parameters, just declare them
 126  * as pointers because the syscall entry code will have
 127  * appropriately comverted them already.
 128  */
 129 typedef u32             compat_uptr_t;
 130
 131 static inline void __user *compat_ptr(compat_uptr_t uptr)
 132 {
 133         return (void __user *)(long)uptr;
 134 }
 135
 136 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 137 {
 138         return (u32)(unsigned long)uptr;
 139 }
 140
 141 static inline void __user *compat_alloc_user_space(long len)
 142 {
 143         struct pt_regs *regs = (struct pt_regs *)
 144                 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
 145
 146         return (void __user *) (regs->regs[29] - len);
 147 }
 148
 149 #endif /* _ASM_COMPAT_H */