blkid: Fix MD 0.90 superblock detection on little endian systems

MD 0.90 superblock format is host endian - need to check for bith big
endian and little endian magic.  Without this change MD components
created on little endian systems were not detected as such, which
could then lead to false positives when detecting filesystems.

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>

diff --git a/lib/blkid/probe.c b/lib/blkid/probe.c
index 24592bf..b8a75de 100644 (file)
--- a/lib/blkid/probe.c
+++ b/lib/blkid/probe.c
@@ -105,7 +105,7 @@ static int check_mdraid(int fd, unsigned char *ret_uuid)
                return -BLKID_ERR_IO;
 
        /* Check for magic number */
-       if (memcmp("\251+N\374", buf, 4))
+       if (memcmp("\251+N\374", buf, 4) && memcmp("\374N+\251", buf, 4))
                return -BLKID_ERR_PARAM;
 
        if (!ret_uuid)