1/*
2 * QEMU UUID functions
3 *
4 * Copyright 2016 Red Hat, Inc.
5 *
6 * Authors:
7 * Fam Zheng <famz@redhat.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 */
15
16#ifndef QEMU_UUID_H
17#define QEMU_UUID_H
18
19
20/* Version 4 UUID (pseudo random numbers), RFC4122 4.4. */
21
22typedef struct {
23 union {
24 unsigned char data[16];
25 struct {
26 /* Generated in BE endian, can be swapped with qemu_uuid_bswap. */
27 uint32_t time_low;
28 uint16_t time_mid;
29 uint16_t time_high_and_version;
30 uint8_t clock_seq_and_reserved;
31 uint8_t clock_seq_low;
32 uint8_t node[6];
33 } fields;
34 };
35} QemuUUID;
36
37#define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-" \
38 "%02hhx%02hhx-%02hhx%02hhx-" \
39 "%02hhx%02hhx-" \
40 "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
41
42#define UUID_FMT_LEN 36
43
44#define UUID_NONE "00000000-0000-0000-0000-000000000000"
45
46void qemu_uuid_generate(QemuUUID *out);
47
48int qemu_uuid_is_null(const QemuUUID *uu);
49
50int qemu_uuid_is_equal(const QemuUUID *lhv, const QemuUUID *rhv);
51
52void qemu_uuid_unparse(const QemuUUID *uuid, char *out);
53
54char *qemu_uuid_unparse_strdup(const QemuUUID *uuid);
55
56int qemu_uuid_parse(const char *str, QemuUUID *uuid);
57
58QemuUUID qemu_uuid_bswap(QemuUUID uuid);
59
60#endif
61