* libs/libc/unistd/lib_restoredir.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 <nuttx/config.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include "libc.h"
#ifndef CONFIG_DISABLE_ENVIRON
* Public Functions
****************************************************************************/
* Name: lib_restoredir
****************************************************************************/
int lib_restoredir(void)
{
FAR char *oldpwd;
int ret = OK;
oldpwd = getenv("OLDPWD");
if (oldpwd)
{
ret = setenv("PWD", oldpwd, TRUE);
}
return ret;
}
#endif