1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  * UUID/GUID definition
4  *
5  * Copyright (C) 2010, Intel Corp.
6  *	Huang Ying <ying.huang@intel.com>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License version
10  * 2 as published by the Free Software Foundation;
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  */
17 
18 #ifndef _UAPI_LINUX_UUID_H_
19 #define _UAPI_LINUX_UUID_H_
20 
21 #include <linux/types.h>
22 
23 typedef struct {
24 	__u8 b[16];
25 } guid_t;
26 
27 #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)			\
28 ((guid_t)								\
29 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
30    (b) & 0xff, ((b) >> 8) & 0xff,					\
31    (c) & 0xff, ((c) >> 8) & 0xff,					\
32    (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
33 
34 /* backwards compatibility, don't use in new code */
35 typedef guid_t uuid_le;
36 #define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
37 	GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
38 #define NULL_UUID_LE							\
39 	UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
40 	     0x00, 0x00, 0x00, 0x00)
41 
42 #endif /* _UAPI_LINUX_UUID_H_ */
43