Hi!
Attached you will find a compressed disk image bug.disk. Here is how
you can corrupt its label:
$ parted bug.disk
Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This program is free software, covered by the GNU General Public License.
This program 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 General Public License for more details.
Using /tmp/bug/bug.disk
(parted) p
Disk geometry for /tmp/bug/bug.disk: 0.000-14.636 megabytes
Disk label type: msdos
Minor Start End Type Filesystem Flags
1 0.016 0.875 primary
3 0.875 1.000 extended
8 0.876 0.890 logical
6 0.891 0.937 logical
7 0.938 0.938 logical
5 0.938 0.953 logical
2 1.000 14.625 primary
(parted) mkpart logical linux-swap 0.954 0.999
Error: Can't have overlapping partitions
(parted) q
This bug is in libparted rather than in parted as you can see from
this small C program:
#include <parted/parted.h>
int main() {
PedDevice *dev;
PedDisk *disk;
PedPartition *part;
dev = ped_device_get("bug.disk");
disk = ped_disk_new(dev);
part = ped_partition_new(disk,
PED_PARTITION_LOGICAL,
ped_file_system_type_get("linux-swap"),
1952, 2047);
ped_disk_print(disk);
if (!ped_disk_check(disk)) return;
ped_disk_add_partition(disk, part, ped_constraint_any(dev));
ped_disk_print(disk);
ped_disk_commit(disk);
}
Anton Zinoviev