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137 lines
5.1 KiB
137 lines
5.1 KiB
/**************************************************************************** |
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* libc/stdio/lib_libflushall.c |
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* |
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* Copyright (C) 2007-2009, 2011-2013 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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