2 # Probe Ext2, Ext3 and Ext4 file systems
4 # Copyright (C) 2008-2012 Free Software Foundation, Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3 of the License, or
9 # (at your option) any later version.
11 # This program 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
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 . "${srcdir=.}/init.sh"; path_prepend_ ../parted
20 require_512_byte_sector_size_
25 for type in ext2 ext3 ext4 nilfs2; do
27 ( mkfs.$type -V ) >/dev/null 2>&1 \
28 || { warn_ "$ME: no $type support"; continue; }
30 case $type in ext*) n_sectors=8000 force=-F;;
31 *) n_sectors=$((257*1024)) force=;; esac
33 # create an $type file system
34 dd if=/dev/zero of=$dev bs=$ss count=$n_sectors >/dev/null || fail=1
35 mkfs.$type $force $dev || { warn_ $ME: mkfs.$type failed; fail=1; continue; }
37 # probe the $type file system
38 parted -m -s $dev u s print >out 2>&1 || fail=1
39 grep '^1:.*:'$type'::;$' out || { cat out; fail=1; }
43 # Some features should indicate ext4 by themselves.
44 for feature in uninit_bg flex_bg; do
45 # create an ext3 file system
46 dd if=/dev/zero of=$dev bs=1024 count=4096 >/dev/null || fail=1
47 mkfs.ext3 -F $dev >/dev/null || skip_ "mkfs.ext3 failed"
50 tune2fs -O $feature $dev || skip_ "tune2fs failed"
52 # probe the file system, which should now be ext4
53 parted -m -s $dev u s print >out 2>&1 || fail=1
54 grep '^1:.*:ext4::;$' out || fail=1