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authorRichard <richard@aaazen.com>2017-05-21 12:27:00 -0700
committerJens Axboe <axboe@fb.com>2017-05-23 09:16:07 -0600
commit223220356d5ebc05ead9a8d697abb0c0a906fc81 (patch)
treed1425ac58a36cdb4d8ac1046719b4eda4f6748d3 /block/partitions
parent7bd897cfce1eb373892d35d7f73201b0f9b221c4 (diff)
downloadlinux-0-day-223220356d5ebc05ead9a8d697abb0c0a906fc81.tar.gz
partitions/msdos: FreeBSD UFS2 file systems are not recognized
The code in block/partitions/msdos.c recognizes FreeBSD, OpenBSD and NetBSD partitions and does a reasonable job picking out OpenBSD and NetBSD UFS subpartitions. But for FreeBSD the subpartitions are always "bad". Kernel: <bsd:bad subpartition - ignored Though all 3 of these BSD systems use UFS as a file system, only FreeBSD uses relative start addresses in the subpartition declarations. The following patch fixes this for FreeBSD partitions and leaves the code for OpenBSD and NetBSD intact: Signed-off-by: Richard Narron <comet.berkeley@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/partitions')
-rw-r--r--block/partitions/msdos.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
index 93e7c1b..5610cd5 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -300,6 +300,8 @@ 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)
+ bsd_start += offset;
if (offset == bsd_start && size == bsd_size)
/* full parent partition, we have it already */
continue;