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From: "Pali Rohár" <pali.rohar@gmail.com>
To: linux-fsdevel@vger.kernel.org, Jan Kara <jack@suse.cz>
Subject: [PATCH] udf: Disallow R/W mode for disk with Metadata partition
Date: Sun, 12 Jan 2020 15:49:59 +0100	[thread overview]
Message-ID: <20200112144959.28104-1-pali.rohar@gmail.com> (raw)

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).

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
---
 fs/udf/super.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 8c28e93e9..3b7073c2f 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -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;
-- 
2.20.1


             reply	other threads:[~2020-01-12 14:50 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-12 14:49 Pali Rohár [this message]
2020-01-13 11:40 ` [PATCH] udf: Disallow R/W mode for disk with Metadata partition Jan Kara

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