55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/* $OpenBSD: uuid_is_nil.c,v 1.3 2015/09/13 11:36:16 guenther Exp $ */
|
|
/* $NetBSD: uuid_is_nil.c,v 1.4 2008/04/23 07:52:32 plunky Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2002 Marcel Moolenaar
|
|
* Copyright (c) 2002 Hiten Mahesh Pandya
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD: src/lib/libc/uuid/uuid_is_nil.c,v 1.2 2003/08/08 19:18:43 marcel Exp $
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <uuid.h>
|
|
|
|
/*
|
|
* uuid_is_nil() - return whether the UUID is a nil UUID.
|
|
* See also:
|
|
* http://www.opengroup.org/onlinepubs/009629399/uuid_is_nil.htm
|
|
*/
|
|
int32_t
|
|
uuid_is_nil(const uuid_t *u, uint32_t *status)
|
|
{
|
|
static const uuid_t nil = { .time_low = 0 };
|
|
|
|
if (status)
|
|
*status = uuid_s_ok;
|
|
|
|
if (!u)
|
|
return (1);
|
|
|
|
return (memcmp(u, &nil, sizeof(uuid_t)) == 0 ? 1 : 0);
|
|
}
|
|
DEF_WEAK(uuid_is_nil);
|