Add some basic SYSLOG channel selection logic
This commit is contained in:
parent
832efae5d8
commit
c44a011394
@ -35,60 +35,42 @@
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############################################################################
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############################################################################
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# Include SYSLOG drivers (only one should be enabled)
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# Include SYSLOG Infrastructure
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ifeq ($(CONFIG_SYSLOG),y)
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CSRCS += syslog_channel.c
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# If no special loggin devices are implemented, then the default SYSLOG
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# logic at fs/fs_syslog.c will be used
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# (Add other SYSLOG drivers here)
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ifeq ($(CONFIG_RAMLOG),y)
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CSRCS += ramlog.c
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ifeq ($(CONFIG_SYSLOG_INTBUFFER),y)
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CSRCS += syslog_intbuffer.c
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endif
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# The note driver is hosted in this directory, but is not associated with
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# SYSLOGging
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ifeq ($(CONFIG_DRIVER_NOTE),y)
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CSRCS += note_driver.c
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endif
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# (Add other SYSLOG_CONSOLE drivers here)
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############################################################################
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# Include SYSLOG drivers (only one should be enabled)
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ifeq ($(CONFIG_RAMLOG),y)
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CSRCS += ramlog.c
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else ifeq ($(CONFIG_SYSLOG),y)
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# If no special logging devices are implemented, then the default SYSLOG
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# logic at fs/fs_syslog.c will be used
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# (Add other SYSLOG drivers here)
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ifeq ($(CONFIG_SYSLOG_CONSOLE),y)
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CSRCS += syslog_console.c
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endif
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# (Add other SYSLOG_CONSOLE drivers here)
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endif
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# Include SYSLOG build support
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DEPPATH += --dep-path syslog
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VPATH += :syslog
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############################################################################
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# The RAMLOG can be used even if system logging is not enabled.
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else ifeq ($(CONFIG_RAMLOG),y)
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CSRCS += ramlog.c
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ifeq ($(CONFIG_DRIVER_NOTE),y)
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CSRCS += note_driver.c
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endif
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# Include RAMLOG build support
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DEPPATH += --dep-path syslog
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VPATH += :syslog
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############################################################################
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# The scheduler note driver can be used in any event.
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else ifeq ($(CONFIG_DRIVER_NOTE),y)
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CSRCS += note_driver.c
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# Include note driver build support
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DEPPATH += --dep-path syslog
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VPATH += :syslog
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endif
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126
drivers/syslog/syslog.h
Normal file
126
drivers/syslog/syslog.h
Normal file
@ -0,0 +1,126 @@
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/****************************************************************************
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* drivers/syslog/syslog.h
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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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#ifndef __DRIVERS_SYSLOG_SYSLOG_H
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#define __DRIVERS_SYSLOG_SYSLOG_H
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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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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: syslog_add_intbuffer
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*
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* Description:
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* Add one more character to the interrupt buffer. In the event of
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* buffer overlowed, the character will be dropped. The indication
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* "[truncated]\n" will be appended to the end of the interrupt buffer.
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*
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* Input Parameters:
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* ch - The character to add to the interrupt buffer (must be positive).
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*
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* Returned Value:
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* Zero success, the character is echoed back to the caller. A negated
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* errno value is returned on any failure.
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*
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* Assumptions:
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* Called only from interrupt handling logic; Interrupts will be disabled.
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*
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****************************************************************************/
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#ifdef CONFIG_SYSLOG_INTBUFFER
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int syslog_add_intbuffer(int ch);
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#endif
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/****************************************************************************
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* Name: syslog_flush_intbuffer
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*
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* Description:
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* Flush any characters that may have been added to the interrupt buffer
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* to the SYSLOG device.
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*
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* Input Parameters:
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* channel - The syslog channel to use in performing the flush operation.
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* force - Use the force() method of the channel vs. the putc() method.
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*
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* Returned Value:
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* On success, the character is echoed back to the caller. A negated
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* errno value is returned on any failure.
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*
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* Assumptions:
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* Interrupts may or may not be disabled.
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*
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****************************************************************************/
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#ifdef CONFIG_SYSLOG_INTBUFFER
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int syslog_flush_intbuffer(FAR const struct syslog_channel_s *channel,
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bool force);
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __DRIVERS_SYSLOG_SYSLOG_H */
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207
drivers/syslog/syslog_channel.c
Normal file
207
drivers/syslog/syslog_channel.c
Normal file
@ -0,0 +1,207 @@
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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 <assert.h>
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#include <errno.h>
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#include <nuttx/syslog/syslog.h>
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#ifdef CONFIG_RAMLOG_SYSLOG
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# include <nuttx/syslog/ramlog.h>
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#elif defined(CONFIG_ARCH_LOWPUTC)
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# include <nuttx/arch.h>
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#endif
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#include "syslog.h"
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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#ifndef CONFIG_ARCH_LOWPUTC
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static int syslog_default_putc(int ch);
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#endif
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static int syslog_default_flush(void);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#if defined(CONFIG_RAMLOG_SYSLOG)
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static const struct syslog_channel_s g_default_channel =
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{
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ramlog_putc,
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ramlog_putc,
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syslog_default_flush
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};
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#elif defined(CONFIG_ARCH_LOWPUTC)
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static const struct syslog_channel_s g_default_channel =
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{
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up_putc,
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up_putc,
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syslog_default_flush
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};
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#else
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static const struct syslog_channel_s g_default_channel =
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{
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syslog_default_putc,
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syslog_default_putc,
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syslog_default_flush
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};
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#endif
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/* This is the current syslog channel in use */
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static FAR const struct syslog_channel_s *g_syslog_channel = &g_default_channel;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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#ifndef CONFIG_ARCH_LOWPUTC
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static int syslog_default_putc(int ch)
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{
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return ch;
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}
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#endif
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static int syslog_default_flush(void)
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{
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return OK;
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}
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static int syslog_force(int ch)
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{
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DEBUGASSERT(g_syslog_channel != NULL && g_syslog_channel->sc_force != NULL);
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return g_syslog_channel->sc_force(ch);
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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_channel
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*
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* Description:
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* Configure the SYSLOGging function to use the provided channel to
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* generate SYSLOG output.
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*
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* Input buffer:
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* channel - Provides the interface to the channel to be used.
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*
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* Returned Value:
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* Zero (OK)is returned on success. A negated errno value is returned
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* on any failure.
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*
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****************************************************************************/
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int syslog_channel(FAR const struct syslog_channel_s *channel)
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{
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DEBUGASSERT(channel != NULL);
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if (channel != NULL)
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{
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DEBUGASSERT(channel->sc_putc != NULL && channel->sc_force != NULL &&
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channel->sc_flush != NULL);
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g_syslog_channel = channel;
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return OK;
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}
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return -EINVAL;
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}
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/****************************************************************************
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* Name: syslog_putc
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*
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* Description:
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* This is the low-level system logging interface.
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*
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* Input Parameters:
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* ch - The character to add to the SYSLOG (must be positive).
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*
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* Returned Value:
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* On success, the character is echoed back to the caller. A negated
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* errno value is returned on any failure.
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*
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****************************************************************************/
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int syslog_putc(int ch)
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{
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DEBUGASSERT(g_syslog_channel != NULL);
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/* Is this an attempt to do SYSLOG output from an interrupt handler? */
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if (up_interrupt_context())
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{
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#ifdef CONFIG_SYSLOG_INTBUFFER
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/* Buffer the character in the interrupt buffer. The interrupt buffer
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* will be flushed before the next normal, non-interrupt SYSLOG output.
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*/
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return syslog_add_intbuffer(ch);
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#else
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/* Force the character to the SYSLOG device immediately (if possible).
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* This means that the interrupt data may not be in synchronization
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* with output data that may have been buffered by sc_putc().
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*/
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return syslog_force(ch);
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#endif
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}
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else
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{
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DEBUGASSERT(g_syslog_channel->sc_putc != NULL);
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#ifdef CONFIG_SYSLOG_INTBUFFER
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/* Flush any characters that may have been added to the interrupt
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* buffer.
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*/
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(void)syslog_flush_intbuffer(&g_syslog_channel, false);
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#endif
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return g_syslog_channel->sc_putc(ch);
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}
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}
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/****************************************************************************
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* Name: syslog_flush
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*
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* Description:
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* This is called by system crash-handling logic. It must flush any
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* buffered data to the SYSLOG device.
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*
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* Interrupts are disabled at the time of the crash and this logic must
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* perform the flush using low-level, non-interrupt driven logic.
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*
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* Input Parameters:
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* ch - The character to add to the SYSLOG (must be positive).
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*
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* Returned Value:
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* Zero (OK)is returned on success. A negated errno value is returned
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* on any failure.
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*
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****************************************************************************/
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int syslog_flush(void)
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{
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DEBUGASSERT(g_syslog_channel != NULL && g_syslog_channel->sc_flush != NULL);
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#ifdef CONFIG_SYSLOG_INTBUFFER
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/* Flush any characters that may have been added to the interrupt
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* buffer.
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*/
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(void)syslog_flush_intbuffer(&g_syslog_channel, true);
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#endif
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/* Then flush all of the buffered output to the SYSLOG device */
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return g_syslog_channel->sc_flush();
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}
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115
drivers/syslog/syslog_intbuffer.c
Normal file
115
drivers/syslog/syslog_intbuffer.c
Normal file
@ -0,0 +1,115 @@
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/****************************************************************************
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* drivers/syslog/syslog_intbuffer.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
|
||||
* 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.
|
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* 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.
|
||||
*
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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 <assert.h>
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#include <nuttx/syslog/syslog.h>
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#include "syslog.h"
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#ifdef CONFIG_SYSLOG_INTBUFFER
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
|
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* Private Data
|
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****************************************************************************/
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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_add_intbuffer
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*
|
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* Description:
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* Add one more character to the interrupt buffer. In the event of
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* buffer overlowed, the character will be dropped. The indication
|
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* "[truncated]\n" will be appended to the end of the interrupt buffer.
|
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*
|
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* Input Parameters:
|
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* ch - The character to add to the interrupt buffer (must be positive).
|
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*
|
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* Returned Value:
|
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* Zero success, the character is echoed back to the caller. A negated
|
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* errno value is returned on any failure.
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*
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* Assumptions:
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* Called only from interrupt handling logic; Interrupts will be disabled.
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*
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****************************************************************************/
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int syslog_add_intbuffer(int ch)
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{
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#warning Missing logic
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return -ENOSYS;
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}
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#endif
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/****************************************************************************
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* Name: syslog_flush_intbuffer
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*
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* Description:
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* Flush any characters that may have been added to the interrupt buffer
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* to the SYSLOG device.
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*
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* Input Parameters:
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* channel - The syslog channel to use in performing the flush operation.
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* force - Use the force() method of the channel vs. the putc() method.
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*
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* Returned Value:
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* On success, the character is echoed back to the caller. A negated
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* errno value is returned on any failure.
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*
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* Assumptions:
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* Interrupts may or may not be disabled.
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*
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****************************************************************************/
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int syslog_flush_intbuffer(FAR const struct syslog_channel_s *channel,
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bool force)
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{
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#warning Missing logic
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return -ENOSYS;
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}
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#endif /* CONFIG_SYSLOG_INTBUFFER */
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@ -2,7 +2,7 @@
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* include/nuttx/syslog/syslog.h
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* The NuttX SYSLOGing interface
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*
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* Copyright (C) 2012, 2014-2015 Gregory Nutt. All rights reserved.
|
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* Copyright (C) 2012, 2014-2016 Gregory Nutt. All rights reserved.
|
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
@ -42,6 +42,7 @@
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <nuttx/compiler.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
@ -79,6 +80,23 @@
|
||||
# define CONFIG_SYSLOG_DEVPATH "/dev/ttyS1"
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
/* This structure provides the interface to a SYSLOG device */
|
||||
|
||||
struct syslog_channel_s
|
||||
{
|
||||
/* I/O redirection methods */
|
||||
|
||||
CODE int (*sc_putc)(int ch); /* Normal buffered output */
|
||||
CODE int (*sc_force)(int ch); /* Low-level output for interrupt handlers */
|
||||
CODE int (*sc_flush)(void); /* Flush buffered output (on crash) */
|
||||
|
||||
/* Implementation specific logic may follow */
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
@ -96,6 +114,24 @@ extern "C"
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
/****************************************************************************
|
||||
* Name: syslog_channel
|
||||
*
|
||||
* Description:
|
||||
* Configure the SYSLOGging function to use the provided channel to
|
||||
* generate SYSLOG output.
|
||||
*
|
||||
* Input buffer:
|
||||
* channel - Provides the interface to the channel to be used.
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK)is returned on success. A negated errno value is returned
|
||||
* on any failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int syslog_channel(FAR const struct syslog_channel_s *channel);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: syslog_initialize
|
||||
*
|
||||
@ -106,6 +142,13 @@ extern "C"
|
||||
* NOTE that this implementation excludes using a network connection as
|
||||
* SYSLOG device. That would be a good extension.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK)is returned on success. A negated errno value is returned
|
||||
* on any failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SYSLOG_CHAR
|
||||
@ -116,17 +159,39 @@ int syslog_initialize(void);
|
||||
* Name: syslog_putc
|
||||
*
|
||||
* Description:
|
||||
* This is the low-level system logging interface. The debugging/syslogging
|
||||
* interfaces are syslog() and lowsyslog(). The difference is that
|
||||
* the syslog() internface writes to fd=1 (stdout) whereas lowsyslog() uses
|
||||
* a lower level interface that works from interrupt handlers. This
|
||||
* function is the low-level interface used to implement lowsyslog().
|
||||
* This is the low-level system logging interface.
|
||||
*
|
||||
* Input Parameters:
|
||||
* ch - The character to add to the SYSLOG (must be positive).
|
||||
*
|
||||
* Returned Value:
|
||||
* On success, the character is echoed back to the caller. A negated
|
||||
* errno value is returned on any failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SYSLOG
|
||||
int syslog_putc(int ch);
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: syslog_flush
|
||||
*
|
||||
* Description:
|
||||
* This is called by system crash-handling logic. It must flush any
|
||||
* buffered data to the SYSLOG device.
|
||||
*
|
||||
* Interrupts are disabled at the time of the crash and this logic must
|
||||
* perform the flush using low-level, non-interrupt driven logic.
|
||||
*
|
||||
* Input Parameters:
|
||||
* ch - The character to add to the SYSLOG (must be positive).
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK)is returned on success. A negated errno value is returned
|
||||
* on any failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int syslog_flush(void);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
|
Loading…
Reference in New Issue
Block a user