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Huang Yingfab1c232010-05-18 14:35:18 +08001/*
2 * UUID/GUID definition
3 *
4 * Copyright (C) 2010, Intel Corp.
5 * Huang Ying <ying.huang@intel.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation;
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21#ifndef _LINUX_UUID_H_
22#define _LINUX_UUID_H_
23
24#include <linux/types.h>
25#include <linux/string.h>
26
27typedef struct {
28 __u8 b[16];
29} uuid_le;
30
31typedef struct {
32 __u8 b[16];
33} uuid_be;
34
35#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
36((uuid_le) \
37{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
38 (b) & 0xff, ((b) >> 8) & 0xff, \
39 (c) & 0xff, ((c) >> 8) & 0xff, \
40 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
41
42#define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
43((uuid_be) \
44{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
45 ((b) >> 8) & 0xff, (b) & 0xff, \
46 ((c) >> 8) & 0xff, (c) & 0xff, \
47 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
48
49#define NULL_UUID_LE \
50 UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \
51 0x00, 0x00, 0x00, 0x00)
52
53#define NULL_UUID_BE \
54 UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \
55 0x00, 0x00, 0x00, 0x00)
56
57static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2)
58{
59 return memcmp(&u1, &u2, sizeof(uuid_le));
60}
61
62static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2)
63{
64 return memcmp(&u1, &u2, sizeof(uuid_be));
65}
66
67extern void uuid_le_gen(uuid_le *u);
68extern void uuid_be_gen(uuid_be *u);
69
70#endif