/**************************************************************************** * libs/libc/unistd/lib_fchdir.c * * 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 #include #include #include #ifndef CONFIG_DISABLE_ENVIRON /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: fchdir * * Description: * The fchdir() function changes the current workint directory of the * calling process to the directory specified in fd. * * The fchdir() function is identical to chdir(); the only difference is * that the directory is given as an open file diescriptor. * * Input Parameters: * fd - The file descriptor is the one used internally by the directory * stream. * * Returned Value: * 0(OK) on success; -1(ERROR) on failure with errno set appropriately: * * EACCES * Search permission was denied on the directory open on fd. * EBADF * fd is not a valid file descriptor. * ****************************************************************************/ int fchdir(int fd) { char path[PATH_MAX]; int ret; ret = fcntl(fd, F_GETPATH, path); if (ret < 0) { return ret; } return chdir(path); } #endif /* !CONFIG_DISABLE_ENVIRON */