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1 | /* |
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 | |
27 | typedef struct { |
28 | __u8 b[16]; |
29 | } uuid_le; |
30 | |
31 | typedef 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 | |
57 | static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2) |
58 | { |
59 | return memcmp(&u1, &u2, sizeof(uuid_le)); |
60 | } |
61 | |
62 | static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2) |
63 | { |
64 | return memcmp(&u1, &u2, sizeof(uuid_be)); |
65 | } |
66 | |
67 | extern void uuid_le_gen(uuid_le *u); |
68 | extern void uuid_be_gen(uuid_be *u); |
69 | |
70 | #endif |
71 |
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