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authorRichard Narron <comet.berkeley@gmail.com>2018-01-10 09:12:16 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-08 12:12:42 +0200
commitbd94a2c744246617623c3d67a2511d5493250688 (patch)
tree2638dbf035fce79f38c25ef52e75ca1717d3fc20 /block/partitions
parente522e2ea300e2345d287478fe034d995fecf96e2 (diff)
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/partitions')
-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 5610cd537da7..7d8d50c11ce7 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -300,7 +300,9 @@ 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 */