forked from Archive/PX4-Autopilot
138 lines
5.1 KiB
C
138 lines
5.1 KiB
C
/****************************************************************************
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* libc/stdio/lib_libflushall.c
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*
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* Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdbool.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <nuttx/fs/fs.h>
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#include "lib_internal.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Type Declarations
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Global Constant Data
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****************************************************************************/
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/****************************************************************************
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* Global Variables
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****************************************************************************/
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/****************************************************************************
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* Private Constant Data
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Global Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lib_flushall
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*
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* Description:
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* Called either (1) by the OS when a task exits, or (2) from fflush()
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* when a NULL stream argument is provided.
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*
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****************************************************************************/
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int lib_flushall(FAR struct streamlist *list)
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{
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int lasterrno = OK;
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int ret;
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/* Make sure that there are streams associated with this thread */
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if (list)
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{
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int i;
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/* Process each stream in the thread's stream list */
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stream_semtake(list);
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for (i = 0; i < CONFIG_NFILE_STREAMS; i++)
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{
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FILE *stream = &list->sl_streams[i];
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/* If the stream is open (i.e., assigned a non-negative file
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* descriptor) and opened for writing, then flush all of the pending
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* write data in the stream.
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*/
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if (stream->fs_filedes >= 0 && (stream->fs_oflags & O_WROK) != 0)
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{
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/* Flush the writable FILE */
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ret = lib_fflush(stream, true);
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if (ret < 0)
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{
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/* An error occurred during the flush AND/OR we were unable
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* to flush all of the buffered write data. Remember the
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* last errcode.
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*/
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lasterrno = ret;
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}
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}
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}
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stream_semgive(list);
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}
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/* If any flush failed, return the errorcode of the last failed flush */
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return lasterrno;
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}
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