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# Ensure parted doesn't change the type of a partition to match its FS.
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# Copyright (C) 2009-2012 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/init.sh"; path_prepend_ ../parted
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require_scsi_debug_module_
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grep '^#define USE_BLKID 1' "$CONFIG_HEADER" > /dev/null ||
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skip_ 'this system lacks a new-enough libblkid'
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# create memory-backed device
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scsi_debug_setup_ dev_size_mb=550 > dev-name ||
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skip_ 'failed to create scsi_debug device'
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scsi_dev=$(cat dev-name)
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# Create an empty partition of "type fat32", and then create an actual
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# ext2 partition in it. Then "unset" the already unset LVM flag on that
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# partition and ensure that parted doesn't "helpfully" change the partition
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# type to match the newly-detected FS type.
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parted -s $scsi_dev mklabel msdos mkpart primary fat32 64s 80000s || fail=1
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parted -s $scsi_dev u s p
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wait_for_dev_to_appear_ $p1 || fail=1
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mkfs.ext2 $p1 || fail=1
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# print as hex, the type of the first partition
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msdos_p1_type() { od -An --skip=450 -N1 -tx1 "$1"; }
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# Initially, it is 0x0c (FAT32).
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type=$(msdos_p1_type $scsi_dev) || fail=1
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type=${type# } # remove leading space
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*) fail_ "expected initial type of 0c (FAT32)";;
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parted -s $scsi_dev u s p
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parted -s $scsi_dev set 1 lvm off || fail=1
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# Before parted-2.1, the above would mistakenly change it to 0x83,
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# to match the file system now residing in that partition.
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type=$(msdos_p1_type $scsi_dev) || fail=1
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type=${type# } # remove leading space
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*) fail_ "parted changed the type of partition 1 from 0c to $type";;
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# Ensure that setting the "lvm" flag still works.
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parted -s $scsi_dev set 1 lvm on || fail=1
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parted -s $scsi_dev u s p > out || fail=1
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grep lvm out || { fail=1; cat out; }
added
removed
tests/t3200-type-change.sh
