include/asm-ppc64/compat.h

   1 #ifndef _ASM_PPC64_COMPAT_H
   2 #define _ASM_PPC64_COMPAT_H
   3 /*
   4  * Architecture specific compatibility types
   5  */
   6 #include <linux/types.h>
   7 #include <linux/sched.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_pid_t;
  16 typedef u32             compat_uid_t;
  17 typedef u32             compat_gid_t;
  18 typedef u32             compat_mode_t;
  19 typedef u32             compat_ino_t;
  20 typedef u32             compat_dev_t;
  21 typedef s32             compat_off_t;
  22 typedef s64             compat_loff_t;
  23 typedef s16             compat_nlink_t;
  24 typedef u16             compat_ipc_pid_t;
  25 typedef s32             compat_daddr_t;
  26 typedef u32             compat_caddr_t;
  27 typedef __kernel_fsid_t compat_fsid_t;
  28
  29 typedef s32             compat_int_t;
  30 typedef s32             compat_long_t;
  31 typedef u32             compat_uint_t;
  32 typedef u32             compat_ulong_t;
  33
  34 struct compat_timespec {
  35         compat_time_t   tv_sec;
  36         s32             tv_nsec;
  37 };
  38
  39 struct compat_timeval {
  40         compat_time_t   tv_sec;
  41         s32             tv_usec;
  42 };
  43
  44 struct compat_stat {
  45         compat_dev_t    st_dev;
  46         compat_ino_t    st_ino;
  47         compat_mode_t   st_mode;
  48         compat_nlink_t  st_nlink;
  49         compat_uid_t    st_uid;
  50         compat_gid_t    st_gid;
  51         compat_dev_t    st_rdev;
  52         compat_off_t    st_size;
  53         compat_off_t    st_blksize;
  54         compat_off_t    st_blocks;
  55         compat_time_t   st_atime;
  56         u32             st_atime_nsec;
  57         compat_time_t   st_mtime;
  58         u32             st_mtime_nsec;
  59         compat_time_t   st_ctime;
  60         u32             st_ctime_nsec;
  61         u32             __unused4[2];
  62 };
  63
  64 struct compat_flock {
  65         short           l_type;
  66         short           l_whence;
  67         compat_off_t    l_start;
  68         compat_off_t    l_len;
  69         compat_pid_t    l_pid;
  70 };
  71
  72 #define F_GETLK64       12      /*  using 'struct flock64' */
  73 #define F_SETLK64       13
  74 #define F_SETLKW64      14
  75
  76 struct compat_flock64 {
  77         short           l_type;
  78         short           l_whence;
  79         compat_loff_t   l_start;
  80         compat_loff_t   l_len;
  81         compat_pid_t    l_pid;
  82 };
  83
  84 struct compat_statfs {
  85         int             f_type;
  86         int             f_bsize;
  87         int             f_blocks;
  88         int             f_bfree;
  89         int             f_bavail;
  90         int             f_files;
  91         int             f_ffree;
  92         compat_fsid_t   f_fsid;
  93         int             f_namelen;      /* SunOS ignores this field. */
  94         int             f_frsize;
  95         int             f_spare[5];
  96 };
  97
  98 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
  99 #define COMPAT_RLIM_INFINITY            0xffffffff
 100
 101 typedef u32             compat_old_sigset_t;
 102
 103 #define _COMPAT_NSIG            64
 104 #define _COMPAT_NSIG_BPW        32
 105
 106 typedef u32             compat_sigset_word;
 107
 108 #define COMPAT_OFF_T_MAX        0x7fffffff
 109 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 110
 111 /*
 112  * A pointer passed in from user mode. This should not
 113  * be used for syscall parameters, just declare them
 114  * as pointers because the syscall entry code will have
 115  * appropriately comverted them already.
 116  */
 117 typedef u32             compat_uptr_t;
 118
 119 static inline void *compat_ptr(compat_uptr_t uptr)
 120 {
 121         return (void *)(unsigned long)uptr;
 122 }
 123
 124 static inline void *compat_alloc_user_space(long len)
 125 {
 126         struct pt_regs *regs = current->thread.regs;
 127         unsigned long usp = regs->gpr[1];
 128
 129         /*
 130          * We cant access below the stack pointer in the 32bit ABI and
 131          * can access 288 bytes in the 64bit ABI
 132          */
 133         if (!(test_thread_flag(TIF_32BIT)))
 134                 usp -= 288;
 135
 136         return (void *) (usp - len);
 137 }
 138
 139 #endif /* _ASM_PPC64_COMPAT_H */