Commit 57debb81 authored Jan 12, 2020 by Pali Rohár Committed by Jan Kara Jan 13, 2020

udf: Disallow R/W mode for disk with Metadata partition

Currently we do not support writing to UDF disks with Metadata partition.
There is already check that disks with declared minimal write revision to
UDF 2.50 or higher are mounted only in R/O mode but this does not cover
situation when minimal write revision is set incorrectly (e.g. to 2.01).

Link: https://lore.kernel.org/r/20200112144959.28104-1-pali.rohar@gmail.com

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

parent 49be68c4

fs/udf/super.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1063,7 +1063,8 @@ static int check_partition_desc(struct super_block *sb,
		goto force_ro;

		if (map->s_partition_type == UDF_VIRTUAL_MAP15 \|\|
		map->s_partition_type == UDF_VIRTUAL_MAP20)
		map->s_partition_type == UDF_VIRTUAL_MAP20 \|\|
		map->s_partition_type == UDF_METADATA_MAP25)
		goto force_ro;

		return 0;