1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "apr_arch_file_io.h"
18
19APR_DECLARE(apr_status_t) apr_file_lock(apr_file_t *thefile, int type)
20{
21    FILELOCK lockrange = { 0, 0x7fffffff };
22    ULONG rc;
23
24    rc = DosSetFileLocks(thefile->filedes, NULL, &lockrange,
25                         (type & APR_FLOCK_NONBLOCK) ? 0 : (ULONG)-1,
26                         (type & APR_FLOCK_TYPEMASK) == APR_FLOCK_SHARED);
27    return APR_FROM_OS_ERROR(rc);
28}
29
30APR_DECLARE(apr_status_t) apr_file_unlock(apr_file_t *thefile)
31{
32    FILELOCK unlockrange = { 0, 0x7fffffff };
33    ULONG rc;
34
35    rc = DosSetFileLocks(thefile->filedes, &unlockrange, NULL, 0, 0);
36    return APR_FROM_OS_ERROR(rc);
37}
38