From: NeilBrown <neilb@suse.de>
Date: Sun, 26 Oct 2008 23:04:46 +0000 (+1100)
Subject: ddf: get endian-ness of CRC correct.
X-Git-Tag: mdadm-3.0-devel2~70
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4abe6b708687f9982bfbc0629e1070bf49714fa3;p=thirdparty%2Fmdadm.git

ddf: get endian-ness of CRC correct.

All numeric fields in a DDF header big-endian, including the CRC, so
better fix that.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/super-ddf.c b/super-ddf.c
index db6476b1..4264bdf7 100644
--- a/super-ddf.c
+++ b/super-ddf.c
@@ -446,7 +446,10 @@ static int calc_crc(void *buf, int len)
 
 	newcrc = crc32(0, buf, len);
 	ddf->crc = oldcrc;
-	return newcrc;
+	/* The crc is store (like everything) bigendian, so convert
+	 * here for simplicity
+	 */
+	return __cpu_to_be32(newcrc);
 }
 
 static int load_ddf_header(int fd, unsigned long long lba,