61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/****************************************************************************
|
|
* libs/libc/uuid/lib_uuid_is_nil.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <string.h>
|
|
#include <uuid.h>
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name uuid_is_nil()
|
|
*
|
|
* Description:
|
|
* 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(FAR const uuid_t *u, FAR uint32_t *status)
|
|
{
|
|
static const uuid_t nil;
|
|
|
|
if (status)
|
|
{
|
|
*status = uuid_s_ok;
|
|
}
|
|
|
|
if (!u)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
return memcmp(u, &nil, sizeof(uuid_t)) == 0 ? 1 : 0;
|
|
}
|