Add the sessiond notification-handling subsystem
[lttng-tools.git] / src / common / compat / uuid.h
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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
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26/*
27 * Includes final \0.
28 */
29#define UUID_STR_LEN 37
d0b96690 30#define UUID_LEN 16
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31
32#ifdef LTTNG_HAVE_LIBUUID
33#include <uuid/uuid.h>
34
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35/*
36 * uuid_out is of len UUID_LEN.
37 */
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38static inline
39int lttng_uuid_generate(unsigned char *uuid_out)
40{
41 uuid_generate(uuid_out);
42 return 0;
43}
44
45#elif defined(LTTNG_HAVE_LIBC_UUID)
46#include <uuid.h>
47#include <stdint.h>
48
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49/*
50 * uuid_out is of len UUID_LEN.
51 */
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52static inline
53int lttng_uuid_generate(unsigned char *uuid_out)
54{
55 uint32_t status;
56
57 uuid_create((uuid_t *) uuid_out, &status);
58 if (status == uuid_s_ok)
59 return 0;
60 else
61 return -1;
62}
63
64#else
65#error "LTTng-Tools needs to have a UUID generator configured."
66#endif
67
68#endif /* LTTNG_UUID_H */
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