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/* Copyright (C) 1991, 1995, 1996, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <stddef.h>
#include <unistd.h>
#include <limits.h>
#include <sys/statfs.h>
#define EXT2_SUPER_MAGIC 0xef53
#define UFS_MAGIC 0x00011954
#define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
static long int default_fpathconf (int fd, int name);
/* Get file-specific information about descriptor FD. */
long int
__fpathconf (fd, name)
int fd;
int name;
{
if (fd < 0)
{
__set_errno (EBADF);
return -1;
}
if (name == _PC_FILESIZEBITS)
{
/* Test whether this is on a ext2 filesystem which supports large
files. */
struct statfs fs;
if (__fstatfs (fd, &fs) < 0
|| (fs.f_type != EXT2_SUPER_MAGIC
&& fs.f_type != UFS_MAGIC
&& fs.f_type != UFS_CIGAM))
return 32;
/* This filesystem supported files >2GB. */
return 64;
}
/* Fallback to the generic version. */
return default_fpathconf (fd, name);
}
#define __fpathconf static default_fpathconf
#include <sysdeps/posix/fpathconf.c>
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