mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 06:40:09 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/* Copyright (C) 1991, 1995, 1996, 1998, 2000 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; 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>
|
|
|
|
#include <linux_fsinfo.h>
|
|
|
|
|
|
/* The Linux kernel header mentioned this as a kind of generic value. */
|
|
#define LINUX_LINK_MAX 127
|
|
|
|
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;
|
|
}
|
|
if (name == _PC_LINK_MAX)
|
|
{
|
|
struct statfs fsbuf;
|
|
|
|
/* Determine the filesystem type. */
|
|
if (__fstatfs (fd, &fsbuf) < 0)
|
|
/* not possible, return the default value. */
|
|
return LINUX_LINK_MAX;
|
|
|
|
switch (fsbuf.f_type)
|
|
{
|
|
case EXT2_SUPER_MAGIC:
|
|
return EXT2_LINK_MAX;
|
|
|
|
case MINIX_SUPER_MAGIC:
|
|
case MINIX_SUPER_MAGIC2:
|
|
return MINIX_LINK_MAX;
|
|
|
|
case MINIX2_SUPER_MAGIC:
|
|
case MINIX2_SUPER_MAGIC2:
|
|
return MINIX2_LINK_MAX;
|
|
|
|
case XENIX_SUPER_MAGIC:
|
|
return XENIX_LINK_MAX;
|
|
|
|
case SYSV4_SUPER_MAGIC:
|
|
case SYSV2_SUPER_MAGIC:
|
|
return SYSV_LINK_MAX;
|
|
|
|
case COH_SUPER_MAGIC:
|
|
return COH_LINK_MAX;
|
|
|
|
case UFS_MAGIC:
|
|
case UFS_CIGAM:
|
|
return UFS_LINK_MAX;
|
|
|
|
default:
|
|
return LINUX_LINK_MAX;
|
|
}
|
|
}
|
|
|
|
/* Fallback to the generic version. */
|
|
return default_fpathconf (fd, name);
|
|
}
|
|
|
|
#define __fpathconf static default_fpathconf
|
|
#include <sysdeps/posix/fpathconf.c>
|