99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/****************************************************************************
|
|
* lib/lib_fclose.c
|
|
*
|
|
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Compilation Switches
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <sys/types.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
/****************************************************************************
|
|
* Global Functions
|
|
****************************************************************************/
|
|
|
|
int fclose(FAR FILE *stream)
|
|
{
|
|
int ret = OK;
|
|
if (stream)
|
|
{
|
|
if (stream->fs_filedes > 0)
|
|
{
|
|
ret = close(stream->fs_filedes);
|
|
}
|
|
|
|
#if CONFIG_STDIO_BUFFER_SIZE > 0
|
|
/* Destroy the semaphore */
|
|
|
|
sem_destroy(&stream->fs_sem);
|
|
|
|
/* release the buffer */
|
|
|
|
if (stream->fs_bufstart)
|
|
{
|
|
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;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|