sysdeps/unix/sysv/linux/lxstat.c

   1 /* lxstat using old-style Unix fstat system call.
   2    Copyright (C) 1991, 1995, 1996, 1997 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <errno.h>
  21 #include <stddef.h>
  22 #include <sys/stat.h>
  23
  24 #include <kernel_stat.h>
  25
  26 extern int __syscall_lstat (const char *, struct kernel_stat *);
  27
  28 /* Get information about the file NAME in BUF.  */
  29 int
  30 __lxstat (int vers, const char *name, struct stat *buf)
  31 {
  32   struct kernel_stat kbuf;
  33   int result;
  34
  35   switch (vers)
  36     {
  37     case _STAT_VER_LINUX_OLD:
  38       /* Nothing to do.  The struct is in the form the kernel expects
  39          it to be.  */
  40       result = __syscall_lstat (name, (struct kernel_stat *) buf);
  41       break;
  42
  43     case _STAT_VER_LINUX:
  44       /* Do the system call.  */
  45       result = __syscall_lstat (name, &kbuf);
  46
  47       /* Convert to current kernel version of `struct stat'.  */
  48       buf->st_dev = kbuf.st_dev;
  49 #ifdef _HAVE___PAD1
  50       buf->__pad1 = 0;
  51 #endif
  52       buf->st_ino = kbuf.st_ino;
  53       buf->st_mode = kbuf.st_mode;
  54       buf->st_nlink = kbuf.st_nlink;
  55       buf->st_uid = kbuf.st_uid;
  56       buf->st_gid = kbuf.st_gid;
  57       buf->st_rdev = kbuf.st_rdev;
  58 #ifdef _HAVE___PAD2
  59       buf->__pad2 = 0;
  60 #endif
  61       buf->st_size = kbuf.st_size;
  62       buf->st_blksize = kbuf.st_blksize;
  63       buf->st_blocks = kbuf.st_blocks;
  64       buf->st_atime = kbuf.st_atime;
  65 #ifdef _HAVE___UNUSED1
  66       buf->__unused1 = 0;
  67 #endif
  68       buf->st_mtime = kbuf.st_mtime;
  69 #ifdef _HAVE___UNUSED2
  70       buf->__unused2 = 0;
  71 #endif
  72       buf->st_ctime = kbuf.st_ctime;
  73 #ifdef _HAVE___UNUSED3
  74       buf->__unused3 = 0;
  75 #endif
  76 #ifdef _HAVE___UNUSED4
  77       buf->__unused4 = 0;
  78 #endif
  79 #ifdef _HAVE___UNUSED5
  80       buf->__unused5 = 0;
  81 #endif
  82       break;
  83
  84     default:
  85       __set_errno (EINVAL);
  86       result = -1;
  87       break;
  88     }
  89
  90   return result;
  91 }
  92 weak_alias (__lxstat, _lxstat)