nuttx/drivers/syslog/syslog.h
2016-06-18 14:54:25 -06:00

129 lines
4.6 KiB
C

/****************************************************************************
* drivers/syslog/syslog.h
*
* Copyright (C) 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.
*
****************************************************************************/
#ifndef __DRIVERS_SYSLOG_SYSLOG_H
#define __DRIVERS_SYSLOG_SYSLOG_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: syslog_add_intbuffer
*
* Description:
* Add one more character to the interrupt buffer. In the event of
* buffer overlowed, the character will be dropped. The indication
* "[truncated]\n" will be appended to the end of the interrupt buffer.
*
* Input Parameters:
* ch - The character to add to the interrupt buffer (must be positive).
*
* Returned Value:
* Zero success, the character is echoed back to the caller. A negated
* errno value is returned on any failure.
*
* Assumptions:
* Called only from interrupt handling logic; Interrupts will be disabled.
*
****************************************************************************/
#ifdef CONFIG_SYSLOG_INTBUFFER
int syslog_add_intbuffer(int ch);
#endif
/****************************************************************************
* Name: syslog_flush_intbuffer
*
* Description:
* Flush any characters that may have been added to the interrupt buffer
* to the SYSLOG device.
*
* Input Parameters:
* channel - The syslog channel to use in performing the flush operation.
* force - Use the force() method of the channel vs. the putc() method.
*
* Returned Value:
* On success, the character is echoed back to the caller. A negated
* errno value is returned on any failure.
*
* Assumptions:
* Interrupts may or may not be disabled.
*
****************************************************************************/
#ifdef CONFIG_SYSLOG_INTBUFFER
int syslog_flush_intbuffer(FAR const struct syslog_channel_s *channel,
bool force);
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __DRIVERS_SYSLOG_SYSLOG_H */