2 files changed, 71 insertions, 0 deletions
diff --git a/lib/uuid/uuid.c b/lib/uuid/uuid.c
new file mode 100644
index 000000000..a96b5ad67
--- /dev/null
+++ b/lib/uuid/uuid.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2001 Sistina Software (UK) Limited.
+ *
+ * This file is released under the GPL.
+ */
+
+#include "uuid.h"
+#include "log.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+static unsigned char _c[] =
+    "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+int id_create(struct id *id)
+{
+	int random, i, len = sizeof(id->uuid);
+
+	memset(id->uuid, 0, len);
+	if ((random = open("/dev/urandom", O_RDONLY)) < 0) {
+		log_sys_error("open", "id_create");
+		return 0;
+	}
+
+	if (read(random, id->uuid, len) != len) {
+		log_sys_error("read", "id_create");
+		return 0;
+	}
+	close(random);
+
+	for (i = 0; i < len; i++)
+		id->uuid[i] = _c[id->uuid[i] % (sizeof(_c) - 1)];
+
+	return 1;
+}
+
+int id_valid(struct id *id)
+{
+	log_err("Joe hasn't written id_valid yet");
+	return 1;
+}
+
+int id_cmp(struct id *lhs, struct id *rhs)
+{
+	return memcmp(lhs->uuid, rhs->uuid, sizeof(lhs->uuid));
+}
diff --git a/lib/uuid/uuid.h b/lib/uuid/uuid.h
new file mode 100644
index 000000000..15de1b7de
--- /dev/null
+++ b/lib/uuid/uuid.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2001 Sistina Software (UK) Limited.
+ *
+ * This file is released under the GPL.
+ */
+
+#ifndef _LVM_UUID_H
+#define _LVM_UUID_H
+
+#include "lvm-types.h"
+
+#define ID_LEN 32
+
+struct id {
+	uint8_t uuid[ID_LEN];
+};
+
+int id_create(struct id *id);
+int id_valid(struct id *id);
+int id_cmp(struct id *lhs, struct id *rhs);
+
+#endif