projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| ffe60014 DG |
1 | /* |
| 2 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 3 | * | |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 5 | * of this software and associated documentation files (the "Software"), to | |
| 6 | * deal in the Software without restriction, including without limitation the | |
| 7 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
| 8 | * sell copies of the Software, and to permit persons to whom the Software is | |
| 9 | * furnished to do so, subject to the following conditions: | |
| 10 | * | |
| 11 | * The above copyright notice and this permission notice shall be included in | |
| 12 | * all copies or substantial portions of the Software. | |
| 13 | * | |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| 19 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
| 20 | * IN THE SOFTWARE. | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef LTTNG_UUID_H | |
| 24 | #define LTTNG_UUID_H | |
| 25 | ||
| bef4c7a1 | 26 | #include <common/macros.h> |
| 8cfbd4f4 | 27 | #include <stdbool.h> |
| bef4c7a1 | 28 | |
| ffe60014 DG |
29 | /* |
| 30 | * Includes final \0. | |
| 31 | */ | |
| 32 | #define UUID_STR_LEN 37 | |
| d0b96690 | 33 | #define UUID_LEN 16 |
| ffe60014 | 34 | |
| 52a0e931 JG |
35 | typedef unsigned char lttng_uuid[UUID_LEN]; |
| 36 | ||
| ffe60014 DG |
37 | #ifdef LTTNG_HAVE_LIBUUID |
| 38 | #include <uuid/uuid.h> | |
| 39 | ||
| d0b96690 DG |
40 | /* |
| 41 | * uuid_out is of len UUID_LEN. | |
| 42 | */ | |
| ffe60014 | 43 | static inline |
| 52a0e931 | 44 | int lttng_uuid_generate(lttng_uuid uuid_out) |
| ffe60014 DG |
45 | { |
| 46 | uuid_generate(uuid_out); | |
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | #elif defined(LTTNG_HAVE_LIBC_UUID) | |
| 51 | #include <uuid.h> | |
| 52 | #include <stdint.h> | |
| 53 | ||
| d0b96690 DG |
54 | /* |
| 55 | * uuid_out is of len UUID_LEN. | |
| 56 | */ | |
| ffe60014 | 57 | static inline |
| 52a0e931 | 58 | int lttng_uuid_generate(lttng_uuid uuid_out) |
| ffe60014 DG |
59 | { |
| 60 | uint32_t status; | |
| 61 | ||
| 62 | uuid_create((uuid_t *) uuid_out, &status); | |
| 63 | if (status == uuid_s_ok) | |
| 64 | return 0; | |
| 65 | else | |
| 66 | return -1; | |
| 67 | } | |
| 68 | ||
| 69 | #else | |
| 70 | #error "LTTng-Tools needs to have a UUID generator configured." | |
| 71 | #endif | |
| 72 | ||
| bef4c7a1 JG |
73 | /* |
| 74 | * Convert a UUID to a human-readable, NULL-terminated, string of the form | |
| 75 | * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx. | |
| 76 | * | |
| 77 | * Assumes uuid_str is at least UUID_STR_LEN byte long. | |
| 78 | */ | |
| 79 | LTTNG_HIDDEN | |
| 52a0e931 | 80 | void lttng_uuid_to_str(const lttng_uuid uuid, char *uuid_str); |
| bef4c7a1 | 81 | |
| 8cfbd4f4 JG |
82 | LTTNG_HIDDEN |
| 83 | bool lttng_uuid_is_equal(const lttng_uuid a, const lttng_uuid b); | |
| 84 | ||
| 4c97f6bd JG |
85 | LTTNG_HIDDEN |
| 86 | bool lttng_uuid_is_nil(const lttng_uuid uuid); | |
| 87 | ||
| eafef9eb JG |
88 | LTTNG_HIDDEN |
| 89 | void lttng_uuid_copy(lttng_uuid dst, const lttng_uuid src); | |
| 90 | ||
| ffe60014 | 91 | #endif /* LTTNG_UUID_H */ |