120 lines
4.4 KiB
C
120 lines
4.4 KiB
C
/****************************************************************************
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* drivers/syslog/syslog_chardev.c
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*
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* Copyright (C) 2016 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 <sys/types.h>
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#include <stdbool.h>
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#include <string.h>
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#include <poll.h>
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#include <errno.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/syslog/syslog.h>
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#include "syslog.h"
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#ifdef CONFIG_SYSLOG_CHARDEV
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static ssize_t syslog_chardev_write(FAR struct file *filep,
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FAR const char *buffer, size_t buflen);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct file_operations syslog_fops =
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{
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NULL, /* open */
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NULL, /* close */
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NULL, /* read */
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syslog_chardev_write, /* write */
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NULL, /* seek */
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NULL /* ioctl */
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#ifndef CONFIG_DISABLE_POLL
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, NULL /* poll */
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#endif
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#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
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, NULL /* unlink */
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#endif
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: syslog_chardev_write
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****************************************************************************/
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static ssize_t syslog_chardev_write(FAR struct file *filep,
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FAR const char *buffer, size_t len)
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{
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return syslog_write(buffer, len);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: syslog_register
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*
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* Description:
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* Register a simple character driver at /dev/syslog whose write() method
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* will transfer data to the SYSLOG device. This can be useful if, for
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* example, you want to redirect the output of a program to the SYSLOG.
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*
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* NOTE that unlike other syslog output, this data is unformatted raw
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* byte output with no time-stamping or any other SYSLOG features
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* supported.
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*
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****************************************************************************/
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void syslog_register(void)
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{
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(void)register_driver("/dev/syslog", &syslog_fops, 0222, NULL);
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}
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#endif /* CONFIG_SYSLOG_CHARDEV */
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