| /**************************************************************************** |
| * libs/libc/stdio/lib_fileno.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 <nuttx/config.h> |
| |
| #include <stdio.h> |
| #include <errno.h> |
| |
| #include <nuttx/fs/fs.h> |
| |
| #ifdef CONFIG_FILE_STREAM |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| int fileno(FAR FILE *stream) |
| { |
| int ret = -1; |
| |
| if (stream) |
| { |
| ret = (int)(intptr_t)stream->fs_cookie; |
| } |
| |
| if (ret < 0) |
| { |
| set_errno(EBADF); |
| return ERROR; |
| } |
| |
| return ret; |
| } |
| #endif /* CONFIG_FILE_STREAM */ |