Use uuid as /dev name when assembling array of uncertain origin.

If we aren't sure that the array belongs to 'this' host, use the
uuid to choose a name to avoid any conflict.

1 files changed, 19 insertions, 0 deletions

diff --git a/util.c b/util.c
index b63251f..b65d2ad 100644
--- a/util.c
+++ b/util.c
@@ -269,6 +269,25 @@ void copy_uuid(void *a, int b[4], int swapuuid)
 		memcpy(a, b, 16);
 }
 
+char *fname_from_uuid(struct supertype *st, struct mdinfo *info, char *buf)
+{
+	int i;
+	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) {
+			strcpy(c, "-");
+			c++;
+		}
+		sprintf(c,"%02x", (unsigned char)uuid[i]);
+		c+= 2;
+	}
+	return buf;
+}
+
 #ifndef MDASSEMBLE
 int check_ext2(int fd, char *name)
 {