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61be08e4 | 1 | /* Copyright (c) 2008, 2009, 2010, 2016, 2017 Nicira, Inc. |
d918d9d1 BP |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. | |
14 | */ | |
15 | ||
16 | #ifndef UUID_H | |
17 | #define UUID_H 1 | |
18 | ||
d5dc60f0 | 19 | #include "openvswitch/uuid.h" |
d918d9d1 | 20 | |
42a1d93e BP |
21 | /* An initializer or expression for an all-zero UUID. */ |
22 | #define UUID_ZERO ((struct uuid) { .parts = { 0, 0, 0, 0 } }) | |
23 | ||
d918d9d1 BP |
24 | /* Formats a UUID as a string, in the conventional format. |
25 | * | |
26 | * Example: | |
27 | * struct uuid uuid = ...; | |
28 | * printf("This UUID is "UUID_FMT"\n", UUID_ARGS(&uuid)); | |
29 | * | |
30 | */ | |
31 | #define UUID_LEN 36 | |
32 | #define UUID_FMT "%08x-%04x-%04x-%04x-%04x%08x" | |
33 | #define UUID_ARGS(UUID) \ | |
34 | ((unsigned int) ((UUID)->parts[0])), \ | |
35 | ((unsigned int) ((UUID)->parts[1] >> 16)), \ | |
36 | ((unsigned int) ((UUID)->parts[1] & 0xffff)), \ | |
37 | ((unsigned int) ((UUID)->parts[2] >> 16)), \ | |
38 | ((unsigned int) ((UUID)->parts[2] & 0xffff)), \ | |
39 | ((unsigned int) ((UUID)->parts[3])) | |
40 | ||
41 | /* Returns a hash value for 'uuid'. This hash value is the same regardless of | |
42 | * whether we are running on a 32-bit or 64-bit or big-endian or little-endian | |
43 | * architecture. */ | |
44 | static inline size_t | |
45 | uuid_hash(const struct uuid *uuid) | |
46 | { | |
47 | return uuid->parts[0]; | |
48 | } | |
49 | ||
50 | /* Returns true if 'a == b', false otherwise. */ | |
51 | static inline bool | |
52 | uuid_equals(const struct uuid *a, const struct uuid *b) | |
53 | { | |
54 | return (a->parts[0] == b->parts[0] | |
55 | && a->parts[1] == b->parts[1] | |
56 | && a->parts[2] == b->parts[2] | |
57 | && a->parts[3] == b->parts[3]); | |
58 | } | |
59 | ||
60 | void uuid_init(void); | |
61 | void uuid_generate(struct uuid *); | |
62 | void uuid_zero(struct uuid *); | |
c532bf9d | 63 | bool uuid_is_zero(const struct uuid *); |
d918d9d1 BP |
64 | int uuid_compare_3way(const struct uuid *, const struct uuid *); |
65 | bool uuid_from_string(struct uuid *, const char *); | |
d0d15d58 | 66 | bool uuid_from_string_prefix(struct uuid *, const char *); |
c80eac1f | 67 | int uuid_is_partial_string(const char *); |
61be08e4 | 68 | int uuid_is_partial_match(const struct uuid *, const char *match); |
78145f6e | 69 | void uuid_set_bits_v4(struct uuid *); |
d918d9d1 | 70 | |
27365e26 | 71 | #endif /* uuid.h */ |