From: Dan Williams <dan.j.williams@intel.com>
Date: Thu, 2 Oct 2008 01:50:43 +0000 (-0700)
Subject: fname_as_uuid: print uuids msb first
X-Git-Tag: mdadm-3.0-devel2~81
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=commitdiff_plain;h=9968e376a17dd6d815473f05843b1f257b2babd5

fname_as_uuid: print uuids msb first

The sha1 routines store the uuids in little endian byte-order, so always
print from msb to lsb. This allows imsm containers to be assembled with
-As.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/util.c b/util.c
index 653796f1..4c049423 100644
--- a/util.c
+++ b/util.c
@@ -271,17 +271,21 @@ void copy_uuid(void *a, int b[4], int swapuuid)
 
 char *fname_from_uuid(struct supertype *st, struct mdinfo *info, char *buf, char sep)
 {
-	int i;
+	int i, j;
+	int id;
 	char uuid[16];
 	char *c = buf;
 	strcpy(c, "UUID-");
 	c += strlen(c);
 	copy_uuid(uuid, info->uuid, st->ss->swapuuid);
-	for (i=0; i<16; i++) {
-		if (i && (i&3)==0)
+	for (i = 0; i < 4; i++) {
+		id = uuid[i];
+		if (i)
 			*c++ = sep;
-		sprintf(c,"%02x", (unsigned char)uuid[i]);
-		c+= 2;
+		for (j = 3; j >= 0; j--) {
+			sprintf(c,"%02x", (unsigned char) uuid[j+4*i]);
+			c+= 2;
+		}
 	}
 	return buf;
 }