115 lines
4.0 KiB
C
115 lines
4.0 KiB
C
/****************************************************************************
|
|
* drivers/syslog/syslog_stream.c
|
|
*
|
|
* Copyright (C) 2012, 2016 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 <stdio.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/syslog/syslog.h>
|
|
#include <nuttx/streams.h>
|
|
|
|
#include "syslog.h"
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: syslogstream_putc
|
|
****************************************************************************/
|
|
|
|
static void syslogstream_putc(FAR struct lib_outstream_s *this, int ch)
|
|
{
|
|
int ret;
|
|
|
|
/* Try writing until the write was successful or until an irrecoverable
|
|
* error occurs.
|
|
*/
|
|
|
|
do
|
|
{
|
|
/* Write the character to the supported logging device. On failure,
|
|
* syslog_putc returns EOF with the errno value set;
|
|
*/
|
|
|
|
ret = syslog_putc(ch);
|
|
if (ret != EOF)
|
|
{
|
|
this->nput++;
|
|
return;
|
|
}
|
|
|
|
/* The special errno value -EINTR means that syslog_putc() was
|
|
* awakened by a signal. This is not a real error and must be
|
|
* ignored in this context.
|
|
*/
|
|
}
|
|
while (errno == -EINTR);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: syslogstream
|
|
*
|
|
* Description:
|
|
* Initializes a stream for use with the configured syslog interface.
|
|
* Only accessible from with the OS SYSLOG logic.
|
|
*
|
|
* Input parameters:
|
|
* stream - User allocated, uninitialized instance of struct
|
|
* lib_lowoutstream_s to be initialized.
|
|
*
|
|
* Returned Value:
|
|
* None (User allocated instance initialized).
|
|
*
|
|
****************************************************************************/
|
|
|
|
void syslogstream(FAR struct lib_outstream_s *stream)
|
|
{
|
|
stream->put = syslogstream_putc;
|
|
stream->flush = lib_noflush;
|
|
stream->nput = 0;
|
|
}
|