summaryrefslogtreecommitdiffstats
path: root/block
diff options
context:
space:
mode:
authorRichard Narron <comet.berkeley@gmail.com>2018-01-10 09:12:16 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-08 14:26:28 +0200
commitac2cb9f3de88f7c85f7880b92ee7db0fb7d641ac (patch)
treed0675657cbabae6fc7315b6352033f52b2b2f6c3 /block
parent0726ba0491ca3e6e6bd88b332c0fcfda7aedd48f (diff)
downloadlinux-stable-ac2cb9f3de88f7c85f7880b92ee7db0fb7d641ac.tar.gz
linux-stable-ac2cb9f3de88f7c85f7880b92ee7db0fb7d641ac.tar.bz2
linux-stable-ac2cb9f3de88f7c85f7880b92ee7db0fb7d641ac.zip
partitions/msdos: Unable to mount UFS 44bsd partitions
commit 5f15684bd5e5ef39d4337988864fec8012471dda upstream. UFS partitions from newer versions of FreeBSD 10 and 11 use relative addressing for their subpartitions. But older versions of FreeBSD still use absolute addressing just like OpenBSD and NetBSD. Instead of simply testing for a FreeBSD partition, the code needs to also test if the starting offset of the C subpartition is zero. https://bugzilla.kernel.org/show_bug.cgi?id=197733 Signed-off-by: Richard Narron <comet.berkeley@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
-rw-r--r--block/partitions/msdos.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
index 0af3a3db6fb0..82c44f7df911 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -301,7 +301,9 @@ static void parse_bsd(struct parsed_partitions *state,
continue;
bsd_start = le32_to_cpu(p->p_offset);
bsd_size = le32_to_cpu(p->p_size);
- if (memcmp(flavour, "bsd\0", 4) == 0)
+ /* FreeBSD has relative offset if C partition offset is zero */
+ if (memcmp(flavour, "bsd\0", 4) == 0 &&
+ le32_to_cpu(l->d_partitions[2].p_offset) == 0)
bsd_start += offset;
if (offset == bsd_start && size == bsd_size)
/* full parent partition, we have it already */