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/****************************************************************************
* lib/stdio/lib_libflushall.c
*
* Copyright (C) 2007-2009, 2011-2012 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 <stdbool.h>
#include <fcntl.h>
#include <errno.h>
#include <nuttx/fs/fs.h>
#include "lib_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Type Declarations
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Constant Data
****************************************************************************/
/****************************************************************************
* Global Variables
****************************************************************************/
/****************************************************************************
* Private Constant Data
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: lib_flushall
*
* Description:
* Called either (1) by the OS when a task exits, or (2) from fflush()
* when a NULL stream argument is provided.
*
****************************************************************************/
int lib_flushall(FAR struct streamlist *list)
{
int lasterrno = OK;
int ret;
/* Make sure that there are streams associated with this thread */
if (list)
{
int i;
/* Process each stream in the thread's stream list */
stream_semtake(list);
for (i = 0; i < CONFIG_NFILE_STREAMS; i++)
{
FILE *stream = &list->sl_streams[i];
/* If the stream is open (i.e., assigned a non-negative file
* descriptor) and opened for writing, then flush all of the pending
* write data in the stream.
*/
if (stream->fs_filedes >= 0 && (stream->fs_oflags & O_WROK) != 0)
{
/* Flush the writable FILE */
ret = lib_fflush(stream, true);
if (ret < 0)
{
/* An error occurred during the flush AND/OR we were unable
* to flush all of the buffered write data. Remember the
* last errcode.
*/
lasterrno = ret;
}
}
}
stream_semgive(list);
}
/* If any flush failed, return the errorcode of the last failed flush */
return lasterrno;
}
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