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fab1c232 HY |
1 | /* |
2 | * UUID/GUID definition | |
3 | * | |
e3a93bce | 4 | * Copyright (C) 2010, 2016 Intel Corp. |
fab1c232 HY |
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. | |
fab1c232 | 15 | */ |
fab1c232 HY |
16 | #ifndef _LINUX_UUID_H_ |
17 | #define _LINUX_UUID_H_ | |
18 | ||
607ca46e | 19 | #include <uapi/linux/uuid.h> |
fab1c232 | 20 | |
60927bc3 CH |
21 | typedef struct { |
22 | __u8 b[16]; | |
23 | } uuid_be; | |
24 | ||
25 | #define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ | |
26 | ((uuid_be) \ | |
27 | {{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \ | |
28 | ((b) >> 8) & 0xff, (b) & 0xff, \ | |
29 | ((c) >> 8) & 0xff, (c) & 0xff, \ | |
30 | (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) | |
31 | ||
32 | #define NULL_UUID_BE \ | |
33 | UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \ | |
34 | 0x00, 0x00, 0x00, 0x00) | |
35 | ||
2b1b0d66 AS |
36 | /* |
37 | * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee") | |
38 | * not including trailing NUL. | |
39 | */ | |
40 | #define UUID_STRING_LEN 36 | |
b544f3fd | 41 | |
fab1c232 HY |
42 | static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2) |
43 | { | |
44 | return memcmp(&u1, &u2, sizeof(uuid_le)); | |
45 | } | |
46 | ||
47 | static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2) | |
48 | { | |
49 | return memcmp(&u1, &u2, sizeof(uuid_be)); | |
50 | } | |
51 | ||
8da4b8c4 AS |
52 | void generate_random_uuid(unsigned char uuid[16]); |
53 | ||
fab1c232 HY |
54 | extern void uuid_le_gen(uuid_le *u); |
55 | extern void uuid_be_gen(uuid_be *u); | |
56 | ||
2b1b0d66 AS |
57 | bool __must_check uuid_is_valid(const char *uuid); |
58 | ||
59 | extern const u8 uuid_le_index[16]; | |
60 | extern const u8 uuid_be_index[16]; | |
61 | ||
62 | int uuid_le_to_bin(const char *uuid, uuid_le *u); | |
63 | int uuid_be_to_bin(const char *uuid, uuid_be *u); | |
64 | ||
fab1c232 | 65 | #endif |