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 | |
22 | typedef 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 | |
46 | void qemu_uuid_generate(QemuUUID *out); |
47 | |
48 | int qemu_uuid_is_null(const QemuUUID *uu); |
49 | |
50 | int qemu_uuid_is_equal(const QemuUUID *lhv, const QemuUUID *rhv); |
51 | |
52 | void qemu_uuid_unparse(const QemuUUID *uuid, char *out); |
53 | |
54 | char *qemu_uuid_unparse_strdup(const QemuUUID *uuid); |
55 | |
56 | int qemu_uuid_parse(const char *str, QemuUUID *uuid); |
57 | |
58 | QemuUUID qemu_uuid_bswap(QemuUUID uuid); |
59 | |
60 | #endif |
61 | |