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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]; | |
f9727a17 | 23 | } uuid_t; |
60927bc3 | 24 | |
f9727a17 CH |
25 | #define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ |
26 | ((uuid_t) \ | |
60927bc3 CH |
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 | ||
2b1b0d66 AS |
32 | /* |
33 | * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee") | |
34 | * not including trailing NUL. | |
35 | */ | |
36 | #define UUID_STRING_LEN 36 | |
b544f3fd | 37 | |
df33767d CH |
38 | static inline bool guid_equal(const guid_t *u1, const guid_t *u2) |
39 | { | |
40 | return memcmp(u1, u2, sizeof(guid_t)) == 0; | |
41 | } | |
42 | ||
43 | static inline void guid_copy(guid_t *dst, const guid_t *src) | |
44 | { | |
45 | memcpy(dst, src, sizeof(guid_t)); | |
46 | } | |
47 | ||
48 | static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2) | |
49 | { | |
50 | return memcmp(u1, u2, sizeof(uuid_t)) == 0; | |
51 | } | |
52 | ||
53 | static inline void uuid_copy(uuid_t *dst, const uuid_t *src) | |
54 | { | |
55 | memcpy(dst, src, sizeof(uuid_t)); | |
56 | } | |
57 | ||
8da4b8c4 AS |
58 | void generate_random_uuid(unsigned char uuid[16]); |
59 | ||
f9727a17 CH |
60 | extern void guid_gen(guid_t *u); |
61 | extern void uuid_gen(uuid_t *u); | |
fab1c232 | 62 | |
2b1b0d66 AS |
63 | bool __must_check uuid_is_valid(const char *uuid); |
64 | ||
f9727a17 CH |
65 | extern const u8 guid_index[16]; |
66 | extern const u8 uuid_index[16]; | |
67 | ||
68 | int guid_parse(const char *uuid, guid_t *u); | |
69 | int uuid_parse(const char *uuid, uuid_t *u); | |
2b1b0d66 | 70 | |
f9727a17 CH |
71 | /* backwards compatibility, don't use in new code */ |
72 | typedef uuid_t uuid_be; | |
73 | #define UUID_BE(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ | |
74 | UUID_INIT(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7) | |
75 | #define NULL_UUID_BE \ | |
76 | UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \ | |
77 | 0x00, 0x00, 0x00, 0x00) | |
78 | ||
79 | #define uuid_le_gen(u) guid_gen(u) | |
80 | #define uuid_be_gen(u) uuid_gen(u) | |
81 | #define uuid_le_to_bin(guid, u) guid_parse(guid, u) | |
82 | #define uuid_be_to_bin(uuid, u) uuid_parse(uuid, u) | |
83 | ||
84 | static inline int uuid_le_cmp(const guid_t u1, const guid_t u2) | |
85 | { | |
86 | return memcmp(&u1, &u2, sizeof(guid_t)); | |
87 | } | |
88 | ||
89 | static inline int uuid_be_cmp(const uuid_t u1, const uuid_t u2) | |
90 | { | |
91 | return memcmp(&u1, &u2, sizeof(uuid_t)); | |
92 | } | |
2b1b0d66 | 93 | |
fab1c232 | 94 | #endif |