sysdeps/unix/sysv/linux/sparc/sparc64/xstatconv.c

   1 /* Convert between the kernel's `struct stat' format, and libc's.
   2    Copyright (C) 1991, 1995, 1996, 1997, 2000, 2002, 2003, 2006
   3    Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <assert.h>
  21 #include <errno.h>
  22 #include <sys/stat.h>
  23 #include <kernel_stat.h>
  24 #include <string.h>
  25 #include <kernel-features.h>
  26
  27 int
  28 __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
  29 {
  30   switch (vers)
  31     {
  32     case _STAT_VER_KERNEL:
  33       /* Nothing to do.  The struct is in the form the kernel expects.
  34          We should have short-circuted before we got here, but for
  35          completeness... */
  36       *(struct kernel_stat *) ubuf = *kbuf;
  37       break;
  38
  39     case _STAT_VER_LINUX:
  40       {
  41         struct stat *buf = ubuf;
  42
  43         /* Convert to current kernel version of `struct stat'.  */
  44         buf->st_dev = kbuf->st_dev;
  45         buf->__pad1 = 0;
  46         buf->st_ino = kbuf->st_ino;
  47         buf->st_mode = kbuf->st_mode;
  48         buf->st_nlink = kbuf->st_nlink;
  49         buf->st_uid = kbuf->st_uid;
  50         buf->st_gid = kbuf->st_gid;
  51         buf->st_rdev = kbuf->st_rdev;
  52         buf->__pad2 = 0;
  53         buf->st_size = kbuf->st_size;
  54         buf->st_blksize = kbuf->st_blksize;
  55         buf->st_blocks = kbuf->st_blocks;
  56         buf->st_atim.tv_sec = kbuf->st_atime_sec;
  57         buf->st_atim.tv_nsec = 0;
  58         buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
  59         buf->st_mtim.tv_nsec = 0;
  60         buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
  61         buf->st_ctim.tv_nsec = 0;
  62         buf->__unused4 = 0;
  63         buf->__unused5 = 0;
  64       }
  65       break;
  66
  67     default:
  68       __set_errno (EINVAL);
  69       return -1;
  70     }
  71
  72   return 0;
  73 }
  74
  75 int
  76 __xstat32_conv (int vers, struct stat64 *sbuf, struct stat *buf)
  77 {
  78   struct kernel_stat64 *kbuf;
  79
  80   /* *stat64 syscalls on sparc64 really fill in struct kernel_stat64,
  81      rather than struct stat64.  But it is the same size as
  82      struct kernel_stat64, so use this hack so that we can reuse
  83      i386 {,f,l}xstat{,at}.c routines.  */
  84   __asm ("" : "=r" (kbuf) : "0" (sbuf));
  85   assert (sizeof (struct stat) == sizeof (struct stat64));
  86   assert (sizeof (struct stat64) >= sizeof (struct kernel_stat64));
  87
  88   switch (vers)
  89     {
  90     case _STAT_VER_LINUX:
  91       {
  92         /* Convert current kernel version of `struct stat64' to
  93            `struct stat'.  */
  94         buf->st_dev = kbuf->st_dev;
  95         buf->__pad1 = 0;
  96         buf->st_ino = kbuf->st_ino;
  97         buf->st_mode = kbuf->st_mode;
  98         buf->st_nlink = kbuf->st_nlink;
  99         buf->st_uid = kbuf->st_uid;
 100         buf->st_gid = kbuf->st_gid;
 101         buf->st_rdev = kbuf->st_rdev;
 102         buf->__pad2 = 0;
 103         buf->st_size = kbuf->st_size;
 104         buf->st_blksize = kbuf->st_blksize;
 105         buf->st_blocks = kbuf->st_blocks;
 106         buf->st_atim.tv_sec = kbuf->st_atime_sec;
 107         buf->st_atim.tv_nsec = kbuf->st_atime_nsec;
 108         buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
 109         buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec;
 110         buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
 111         buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec;
 112         buf->__unused4 = 0;
 113         buf->__unused5 = 0;
 114       }
 115       break;
 116
 117       /* If struct stat64 is different from struct stat then
 118          _STAT_VER_KERNEL does not make sense.  */
 119     case _STAT_VER_KERNEL:
 120     default:
 121       __set_errno (EINVAL);
 122       return -1;
 123     }
 124
 125   return 0;
 126 }