2 # Ensure parted doesn't change the type of a partition to match its FS.
4 # Copyright (C) 2009-2012 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 . "${srcdir=.}/init.sh"; path_prepend_ ../parted
22 require_scsi_debug_module_
24 grep '^#define USE_BLKID 1' "$CONFIG_HEADER" > /dev/null ||
25 skip_ 'this system lacks a new-enough libblkid'
27 # create memory-backed device
28 scsi_debug_setup_ dev_size_mb=550 > dev-name ||
29 skip_ 'failed to create scsi_debug device'
30 scsi_dev=$(cat dev-name)
32 # Create an empty partition of "type fat32", and then create an actual
33 # ext2 partition in it. Then "unset" the already unset LVM flag on that
34 # partition and ensure that parted doesn't "helpfully" change the partition
35 # type to match the newly-detected FS type.
37 parted -s $scsi_dev mklabel msdos mkpart primary fat32 64s 80000s || fail=1
39 parted -s $scsi_dev u s p
42 wait_for_dev_to_appear_ $p1 || fail=1
43 mkfs.ext2 $p1 || fail=1
45 # print as hex, the type of the first partition
46 msdos_p1_type() { od -An --skip=450 -N1 -tx1 "$1"; }
48 # Initially, it is 0x0c (FAT32).
49 type=$(msdos_p1_type $scsi_dev) || fail=1
50 type=${type# } # remove leading space
53 *) fail_ "expected initial type of 0c (FAT32)";;
56 parted -s $scsi_dev u s p
57 parted -s $scsi_dev set 1 lvm off || fail=1
59 # Before parted-2.1, the above would mistakenly change it to 0x83,
60 # to match the file system now residing in that partition.
61 type=$(msdos_p1_type $scsi_dev) || fail=1
62 type=${type# } # remove leading space
65 *) fail_ "parted changed the type of partition 1 from 0c to $type";;
68 # Ensure that setting the "lvm" flag still works.
69 parted -s $scsi_dev set 1 lvm on || fail=1
70 parted -s $scsi_dev u s p > out || fail=1
71 grep lvm out || { fail=1; cat out; }