Index: head/sys/kern/kern_uuid.c
===================================================================
--- head/sys/kern/kern_uuid.c
+++ head/sys/kern/kern_uuid.c
@@ -424,3 +424,10 @@
 	    (c[3] & 0xc0) != 0x80 &&			/* variant 1? */
 	    (c[3] & 0xe0) != 0xc0) ? EINVAL : 0);	/* variant 2? */
 }
+
+int
+uuidcmp(const struct uuid *uuid1, const struct uuid *uuid2)
+{
+
+	return (memcmp(uuid1, uuid2, sizeof(struct uuid)));
+}
Index: head/sys/sys/uuid.h
===================================================================
--- head/sys/sys/uuid.h
+++ head/sys/sys/uuid.h
@@ -65,6 +65,7 @@
 int printf_uuid(struct uuid *);
 int sbuf_printf_uuid(struct sbuf *, struct uuid *);
 int parse_uuid(const char *, struct uuid *);
+int uuidcmp(const struct uuid *, const struct uuid *);
 
 void be_uuid_dec(void const *buf, struct uuid *uuid);
 void be_uuid_enc(void *buf, struct uuid const *uuid);