X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=util.c;h=c21bf5143dfd43129cadb04f9816288f83a5ef0e;hp=ffb113c3c9d5179a872e0e55ed39b7f8f7ef0043;hb=350f29f90d1f6bb3ddfafea368327911f9e8b27c;hpb=3d3dd91e3837d5eb6eeaa876c39153f2b0a4929d

diff --git a/util.c b/util.c
index ffb113c3..c21bf514 100644
--- a/util.c
+++ b/util.c
@@ -246,6 +246,25 @@ int same_uuid(int a[4], int b[4], int swapuuid)
 		return 0;
 	}
 }
+void copy_uuid(void *a, int b[4], int swapuuid)
+{
+	if (swapuuid) {
+		/* parse uuids are hostendian.
+		 * uuid's from some superblocks are big-ending
+		 * if there is a difference, we need to swap..
+		 */
+		unsigned char *ac = (unsigned char *)a;
+		unsigned char *bc = (unsigned char *)b;
+		int i;
+		for (i=0; i<16; i+= 4) {
+			ac[i+0] = bc[i+3];
+			ac[i+1] = bc[i+2];
+			ac[i+2] = bc[i+1];
+			ac[i+3] = bc[i+0];
+		}
+	} else
+		memcpy(a, b, 16);
+}
 
 #ifndef MDASSEMBLE
 int check_ext2(int fd, char *name)