[Patch 1/1] partitions/msdos: FreeBSD UFS2 file systems are not recognized

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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@xxxxxxxxx>
---
 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 = bsd_start + offset;
                if (offset == bsd_start && size == bsd_size)
                        /* full parent partition, we have it already */
                        continue;




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