141 lines
5.2 KiB
C
141 lines
5.2 KiB
C
/****************************************************************************
|
|
* lib/lib_libflushall.c
|
|
*
|
|
* Copyright (C) 2007, 2008 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 <fcntl.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/fs.h>
|
|
|
|
#include "lib_internal.h"
|
|
|
|
/****************************************************************************
|
|
* 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 = OK;
|
|
|
|
/* 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 */
|
|
|
|
if (lib_fflush(stream, TRUE) != 0)
|
|
{
|
|
/* An error occurred during the flush AND/OR we were unable
|
|
* to flush all of the buffered write data. Return EOF on failure.
|
|
*/
|
|
|
|
lasterrno = *get_errno_ptr();
|
|
ret = ERROR;
|
|
}
|
|
}
|
|
}
|
|
stream_semgive(list);
|
|
}
|
|
|
|
/* If any flush failed, return that last failed flush */
|
|
|
|
*get_errno_ptr() = lasterrno;
|
|
return ret;
|
|
}
|