sysdeps/unix/sysv/linux/alpha/fpathconf.c

   1 /* Get file-specific information about a descriptor.  Linux/Alpha version.
   2    Copyright (C) 1991,95,96,98,99,2000,2001,2002 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 <unistd.h>
  21 #include <sys/statfs.h>
  22
  23
  24 static long int linux_fpathconf (int fd, int name);
  25
  26 /* Define this first, so it can be inlined.  */
  27 #define __fpathconf static linux_fpathconf
  28 #include <sysdeps/unix/sysv/linux/fpathconf.c>
  29
  30
  31 /* Get file-specific information about FD.  */
  32 long int
  33 __pathconf (int fd, int name)
  34 {
  35   if (name == _PC_FILESIZEBITS)
  36     {
  37       /* Test whether this is on a ext2 or UFS filesystem which
  38          support large files.  */
  39       struct statfs fs;
  40
  41       if (__fstatfs (fd, &fs) < 0
  42           || (fs.f_type != EXT2_SUPER_MAGIC
  43               && fs.f_type != UFS_MAGIC
  44               && fs.f_type != UFS_CIGAM))
  45         return 32;
  46
  47       /* This filesystem supported files >2GB.  */
  48       return 64;
  49     }
  50
  51   return linux_fpathconf (fd, name);
  52 }