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Diffstat (limited to 'nuttx/libc/stdio/lib_fclose.c')
| -rw-r--r-- | nuttx/libc/stdio/lib_fclose.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/nuttx/libc/stdio/lib_fclose.c b/nuttx/libc/stdio/lib_fclose.c deleted file mode 100644 index c04537adf..000000000 --- a/nuttx/libc/stdio/lib_fclose.c +++ /dev/null @@ -1,154 +0,0 @@ -/**************************************************************************** - * libc/stdio/lib_fclose.c - * - * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <unistd.h> -#include <stdlib.h> -#include <fcntl.h> -#include <string.h> -#include <errno.h> - -#include "lib_internal.h" - -/**************************************************************************** - * Global Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: fclose - * - * Description - * The fclose() function will flush the stream pointed to by stream - * (writing any buffered output data using lib_fflush()) and close the - * underlying file descriptor. - * - * Returned Value: - * Upon successful completion 0 is returned. Otherwise, EOF is returned - * and the global variable errno is set to indicate the error. In either - * case any further access (including another call to fclose()) to the - * stream results in undefined behaviour. - * - ****************************************************************************/ - -int fclose(FAR FILE *stream) -{ - int err = EINVAL; - int ret = ERROR; - int status; - - /* Verify that a stream was provided. */ - - if (stream) - { - /* Check that the underlying file descriptor corresponds to an an open - * file. - */ - - ret = OK; - if (stream->fs_filedes >= 0) - { - /* If the stream was opened for writing, then flush the stream */ - - if ((stream->fs_oflags & O_WROK) != 0) - { - ret = lib_fflush(stream, true); - err = errno; - } - - /* Close the underlying file descriptor and save the return status */ - - status = close(stream->fs_filedes); - - /* If close() returns an error but flush() did not then make sure - * that we return the close() error condition. - */ - - if (ret == OK) - { - ret = status; - err = errno; - } - } - -#if CONFIG_STDIO_BUFFER_SIZE > 0 - /* Destroy the semaphore */ - - sem_destroy(&stream->fs_sem); - - /* Release the buffer */ - - if (stream->fs_bufstart) - { - lib_free(stream->fs_bufstart); - } - - /* Clear the whole structure */ - - memset(stream, 0, sizeof(FILE)); -#else -#if CONFIG_NUNGET_CHARS > 0 - /* Reset the number of ungetc characters */ - - stream->fs_nungotten = 0; -#endif - /* Reset the flags */ - - stream->fs_oflags = 0; -#endif - /* Setting the fs_filedescriptor to -1 makes the stream available for reuse */ - - stream->fs_filedes = -1; - } - - /* On an error, reset the errno to the first error encountered and return - * EOF. - */ - - if (ret != OK) - { - set_errno(err); - return EOF; - } - - /* Return success */ - - return OK; -} - |