source: rtems/cpukit/libmisc/uuid/isnull.c @ ebdeaf6

4.104.11
Last change on this file since ebdeaf6 was ebdeaf6, checked in by Ralf Corsepius <ralf.corsepius@…>, on Mar 27, 2010 at 4:54:19 AM

Add HAVE_CONFIG_H guards around #include "config.h".

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 * isnull.c --- Check whether or not the UUID is null
3 *
4 * Copyright (C) 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, and the entire permission notice in its entirety,
12 *    including the disclaimer of warranties.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote
17 *    products derived from this software without specific prior
18 *    written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
23 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
30 * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
31 * DAMAGE.
32 * %End-Header%
33 */
34
35#ifdef HAVE_CONFIG_H
36#include "config.h"
37#endif
38
39#include "uuidP.h"
40
41/* Returns 1 if the uuid is the NULL uuid */
42int uuid_is_null(const uuid_t uu)
43{
44        const unsigned char     *cp;
45        int                     i;
46
47        for (i=0, cp = uu; i < 16; i++)
48                if (*cp++)
49                        return 0;
50        return 1;
51}
52
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