Commit | Line | Data |
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1802d0be | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
fab1c232 HY |
2 | /* |
3 | * UUID/GUID definition | |
4 | * | |
e3a93bce | 5 | * Copyright (C) 2010, 2016 Intel Corp. |
fab1c232 | 6 | * Huang Ying <ying.huang@intel.com> |
fab1c232 | 7 | */ |
fab1c232 HY |
8 | #ifndef _LINUX_UUID_H_ |
9 | #define _LINUX_UUID_H_ | |
10 | ||
dfbc3c6c | 11 | #include <linux/string.h> |
fab1c232 | 12 | |
297b64c7 TB |
13 | #define UUID_SIZE 16 |
14 | ||
5e6a5178 AS |
15 | typedef struct { |
16 | __u8 b[UUID_SIZE]; | |
17 | } guid_t; | |
18 | ||
60927bc3 | 19 | typedef struct { |
297b64c7 | 20 | __u8 b[UUID_SIZE]; |
f9727a17 | 21 | } uuid_t; |
60927bc3 | 22 | |
5e6a5178 AS |
23 | #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ |
24 | ((guid_t) \ | |
25 | {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ | |
26 | (b) & 0xff, ((b) >> 8) & 0xff, \ | |
27 | (c) & 0xff, ((c) >> 8) & 0xff, \ | |
28 | (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) | |
29 | ||
f9727a17 CH |
30 | #define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ |
31 | ((uuid_t) \ | |
60927bc3 CH |
32 | {{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \ |
33 | ((b) >> 8) & 0xff, (b) & 0xff, \ | |
34 | ((c) >> 8) & 0xff, (c) & 0xff, \ | |
35 | (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) | |
36 | ||
2b1b0d66 AS |
37 | /* |
38 | * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee") | |
39 | * not including trailing NUL. | |
40 | */ | |
41 | #define UUID_STRING_LEN 36 | |
b544f3fd | 42 | |
ef40dda5 CH |
43 | extern const guid_t guid_null; |
44 | extern const uuid_t uuid_null; | |
45 | ||
df33767d CH |
46 | static inline bool guid_equal(const guid_t *u1, const guid_t *u2) |
47 | { | |
48 | return memcmp(u1, u2, sizeof(guid_t)) == 0; | |
49 | } | |
50 | ||
51 | static inline void guid_copy(guid_t *dst, const guid_t *src) | |
52 | { | |
53 | memcpy(dst, src, sizeof(guid_t)); | |
54 | } | |
55 | ||
d01cd624 AS |
56 | static inline void import_guid(guid_t *dst, const __u8 *src) |
57 | { | |
58 | memcpy(dst, src, sizeof(guid_t)); | |
59 | } | |
60 | ||
61 | static inline void export_guid(__u8 *dst, const guid_t *src) | |
62 | { | |
63 | memcpy(dst, src, sizeof(guid_t)); | |
64 | } | |
65 | ||
63709fd4 | 66 | static inline bool guid_is_null(const guid_t *guid) |
ef40dda5 CH |
67 | { |
68 | return guid_equal(guid, &guid_null); | |
69 | } | |
70 | ||
df33767d CH |
71 | static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2) |
72 | { | |
73 | return memcmp(u1, u2, sizeof(uuid_t)) == 0; | |
74 | } | |
75 | ||
76 | static inline void uuid_copy(uuid_t *dst, const uuid_t *src) | |
77 | { | |
78 | memcpy(dst, src, sizeof(uuid_t)); | |
79 | } | |
80 | ||
d01cd624 AS |
81 | static inline void import_uuid(uuid_t *dst, const __u8 *src) |
82 | { | |
83 | memcpy(dst, src, sizeof(uuid_t)); | |
84 | } | |
85 | ||
86 | static inline void export_uuid(__u8 *dst, const uuid_t *src) | |
87 | { | |
88 | memcpy(dst, src, sizeof(uuid_t)); | |
89 | } | |
90 | ||
63709fd4 | 91 | static inline bool uuid_is_null(const uuid_t *uuid) |
ef40dda5 CH |
92 | { |
93 | return uuid_equal(uuid, &uuid_null); | |
94 | } | |
95 | ||
8da4b8c4 | 96 | void generate_random_uuid(unsigned char uuid[16]); |
48a2e88f | 97 | void generate_random_guid(unsigned char guid[16]); |
8da4b8c4 | 98 | |
f9727a17 CH |
99 | extern void guid_gen(guid_t *u); |
100 | extern void uuid_gen(uuid_t *u); | |
fab1c232 | 101 | |
2b1b0d66 AS |
102 | bool __must_check uuid_is_valid(const char *uuid); |
103 | ||
f9727a17 CH |
104 | extern const u8 guid_index[16]; |
105 | extern const u8 uuid_index[16]; | |
106 | ||
107 | int guid_parse(const char *uuid, guid_t *u); | |
108 | int uuid_parse(const char *uuid, uuid_t *u); | |
2b1b0d66 | 109 | |
fab1c232 | 110 | #endif |