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/* 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.
*/
#include "apr_arch_file_io.h"
APR_DECLARE(apr_status_t) apr_file_lock(apr_file_t *thefile, int type)
{
const DWORD len = 0xffffffff;
DWORD flags;
flags = ((type & APR_FLOCK_NONBLOCK) ? LOCKFILE_FAIL_IMMEDIATELY : 0)
+ (((type & APR_FLOCK_TYPEMASK) == APR_FLOCK_SHARED)
? 0 : LOCKFILE_EXCLUSIVE_LOCK);
/* Syntax is correct, len is passed for LengthLow and LengthHigh*/
OVERLAPPED offset;
memset (&offset, 0, sizeof(offset));
if (!LockFileEx(thefile->filehand, flags, 0, len, len, &offset))
return apr_get_os_error();
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_file_unlock(apr_file_t *thefile)
{
DWORD len = 0xffffffff;
/* Syntax is correct, len is passed for LengthLow and LengthHigh*/
OVERLAPPED offset;
memset (&offset, 0, sizeof(offset));
if (!UnlockFileEx(thefile->filehand, 0, len, len, &offset))
return apr_get_os_error();
return APR_SUCCESS;
}
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