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| author |  Richard Narron <comet.berkeley@gmail.com>
| 2018-01-10 09:12:16 -0700 |
|---|---|---|
| committer |  Jens Axboe <axboe@kernel.dk>
| 2018-01-10 09:12:16 -0700 |
| commit | 5f15684bd5e5ef39d4337988864fec8012471dda (patch) | |
| tree | 26964d31fb951d2f05a591ddcb3ef71698a1b8e5 /block/partitions/msdos.c | |
| parent | null_blk: add option for managing IO timeouts (diff) | |
| download | linux-5f15684bd5e5ef39d4337988864fec8012471dda.tar.gz linux-5f15684bd5e5ef39d4337988864fec8012471dda.tar.bz2 linux-5f15684bd5e5ef39d4337988864fec8012471dda.zip | |
partitions/msdos: Unable to mount UFS 44bsd partitions
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>
Diffstat (limited to 'block/partitions/msdos.c')
| -rw-r--r-- | block/partitions/msdos.c | 4 |
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 */ |