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:
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Andries Brouwer <aeb@xxxxxx>
Cc: linux-block@xxxxxxxxxxxxxxx
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Richard Narron <comet.berkeley@xxxxxxxxx>
---
Changelog v2->v3:
- Add Cc:
Changelog v1->v2:
- Improve style, use +=
---
block/partitions/msdos.c | 2 ++
1 file changed, 2 insertions(+)
--- a/block/partitions/msdos.c 2015-12-27 18:17:37.000000000 -0800
+++ b/block/partitions/msdos.c 2015-12-29 10:44:25.813773357 -0800
@@ -300,6 +300,8 @@ static void parse_bsd(struct parsed_part
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;
