sysdeps/unix/sysv/linux/mips/xstatconv.c

   1 /* Convert between the kernel's `struct stat' format, and libc's.
   2    Copyright (C) 1991,1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <sys/stat.h>
  22 #include <kernel_stat.h>
  23
  24 #ifdef STAT_IS_KERNEL_STAT
  25
  26 /* Dummy.  */
  27 struct kernel_stat;
  28
  29 #else
  30
  31 #include <string.h>
  32
  33
  34 int
  35 __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
  36 {
  37   switch (vers)
  38     {
  39     case _STAT_VER_KERNEL:
  40       /* Nothing to do.  The struct is in the form the kernel expects.
  41          We should have short-circuted before we got here, but for
  42          completeness... */
  43       *(struct kernel_stat *) ubuf = *kbuf;
  44       break;
  45
  46     case _STAT_VER_LINUX:
  47       {
  48         struct stat *buf = ubuf;
  49
  50         /* Convert to current kernel version of `struct stat'.  */
  51         buf->st_dev = kbuf->st_dev;
  52         buf->st_pad1[0] = 0; buf->st_pad1[1] = 0; buf->st_pad1[2] = 0;
  53         buf->st_ino = kbuf->st_ino;
  54         buf->st_mode = kbuf->st_mode;
  55         buf->st_nlink = kbuf->st_nlink;
  56         buf->st_uid = kbuf->st_uid;
  57         buf->st_gid = kbuf->st_gid;
  58         buf->st_rdev = kbuf->st_rdev;
  59         buf->st_pad2[0] = 0; buf->st_pad2[1] = 0;
  60         buf->st_pad3 = 0;
  61         buf->st_size = kbuf->st_size;
  62         buf->st_blksize = kbuf->st_blksize;
  63         buf->st_blocks = kbuf->st_blocks;
  64
  65         buf->st_atime = kbuf->st_atime; buf->__reserved0 = 0;
  66         buf->st_mtime = kbuf->st_mtime; buf->__reserved1 = 0;
  67         buf->st_ctime = kbuf->st_ctime; buf->__reserved2 = 0;
  68
  69         buf->st_pad5[0] = 0; buf->st_pad5[1] = 0;
  70         buf->st_pad5[2] = 0; buf->st_pad5[3] = 0;
  71         buf->st_pad5[4] = 0; buf->st_pad5[5] = 0;
  72         buf->st_pad5[6] = 0; buf->st_pad5[7] = 0;
  73       }
  74       break;
  75
  76     default:
  77       __set_errno (EINVAL);
  78       return -1;
  79     }
  80
  81   return 0;
  82 }
  83
  84 int
  85 __xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
  86 {
  87 #ifdef XSTAT_IS_XSTAT64
  88   return xstat_conv (vers, kbuf, ubuf);
  89 #else
  90   switch (vers)
  91     {
  92     case _STAT_VER_LINUX:
  93       {
  94         struct stat64 *buf = ubuf;
  95
  96         buf->st_dev = kbuf->st_dev;
  97         buf->st_pad1[0] = 0; buf->st_pad1[1] = 0; buf->st_pad1[2] = 0;
  98         buf->st_ino = kbuf->st_ino;
  99         buf->st_mode = kbuf->st_mode;
 100         buf->st_nlink = kbuf->st_nlink;
 101         buf->st_uid = kbuf->st_uid;
 102         buf->st_gid = kbuf->st_gid;
 103         buf->st_rdev = kbuf->st_rdev;
 104         buf->st_pad2[0] = 0; buf->st_pad2[1] = 0; buf->st_pad2[2] = 0;
 105         buf->st_pad3 = 0;
 106         buf->st_size = kbuf->st_size;
 107         buf->st_blksize = kbuf->st_blksize;
 108         buf->st_blocks = kbuf->st_blocks;
 109
 110         buf->st_atime = kbuf->st_atime; buf->__reserved0 = 0;
 111         buf->st_mtime = kbuf->st_mtime; buf->__reserved1 = 0;
 112         buf->st_ctime = kbuf->st_ctime; buf->__reserved2 = 0;
 113
 114         buf->st_pad4[0] = 0; buf->st_pad4[1] = 0;
 115         buf->st_pad4[2] = 0; buf->st_pad4[3] = 0;
 116         buf->st_pad4[4] = 0; buf->st_pad4[5] = 0;
 117         buf->st_pad4[6] = 0; buf->st_pad4[7] = 0;
 118       }
 119       break;
 120
 121       /* If struct stat64 is different from struct stat then
 122          _STAT_VER_KERNEL does not make sense.  */
 123     case _STAT_VER_KERNEL:
 124     default:
 125       __set_errno (EINVAL);
 126       return -1;
 127     }
 128
 129   return 0;
 130 #endif
 131 }
 132
 133 #endif /* ! STAT_IS_KERNEL_STAT */