275 lines
9.4 KiB
C
275 lines
9.4 KiB
C
/****************************************************************************
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* include/syslog.h
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*
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* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
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* Copyright (c) @CompanyNameMagicTag 2014-2019. All rights reserved.
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*
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* Author: @CompanyNameTag
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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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/**@defgroup fs Filesystem
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*
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*/
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#ifndef __INCLUDE_SYSLOG_H
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#define __INCLUDE_SYSLOG_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "vfs_config.h"
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#include "stdint.h"
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#include "stdarg.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern "C"{
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#endif
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#endif /* __cplusplus */
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* The option argument to openlog() is an OR of any of these:
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*
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* LOG_CONS - Write directly to system console if there is an error
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* while sending to system logger.
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* LOG_NDELAY - Open the connection immediately (normally, the connection
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* is opened when the first message is logged).
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* LOG_NOWAIT - Don't wait for child processes that may have been created
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* while logging the message.
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* LOG_ODELAY - The converse of LOG_NDELAY; opening of the connection is
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* delayed until syslog() is called. (This is the default,
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* and need not be specified.)
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* LOG_PERROR - (Not in POSIX.1-2001 or POSIX.1-2008.) Print to stderr
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* as well (Linux).
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* LOG_PID - Include PID with each message.
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*/
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/* Note: openlog() is not currently supported */
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/* The facility argument is used to specify what type of program is logging
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* the message. This lets the configuration file specify that messages from
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* different facilities will be handled differently.
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*
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* LOG_AUTH - Security/authorization messages
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* LOG_AUTHPRIV - Security/authorization messages (private)
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* LOG_CRON - Clock daemon (cron and at)
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* LOG_DAEMON - System daemons without separate facility value
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* LOG_FTP - Ftp daemon
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* LOG_KERN - Lernel messages (these can't be generated from user
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* processes)
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* LOG_LOCAL0 through LOG_LOCAL7 - Reserved for local use
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* LOG_LPR - Line printer subsystem
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* LOG_MAIL - Mail subsystem
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* LOG_NEWS - USENET news subsystem
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* LOG_SYSLOG - Messages generated internally by syslogd(8)
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* LOG_USER - Generic user-level messages (default)
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* LOG_UUCP - UUCP subsystem
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*/
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#define LOG_AUTH 0
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#define LOG_AUTHPRIV 0
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#define LOG_CRON 0
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#define LOG_DAEMON 0
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#define LOG_FTP 0
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#define LOG_KERN 0
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#define LOG_LOCAL0 0
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#define LOG_LOCAL1 0
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#define LOG_LOCAL2 0
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#define LOG_LOCAL3 0
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#define LOG_LOCAL4 0
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#define LOG_LOCAL5 0
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#define LOG_LOCAL6 0
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#define LOG_LOCAL7 0
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#define LOG_LPR 0
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#define LOG_MAIL 0
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#define LOG_NEWS 0
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#define LOG_SYSLOG 0
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#define LOG_USER 0
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#define LOG_UUCP 0
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/* This determines the importance of the message. The levels are, in order
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* of decreasing importance:
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*/
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#define LOG_EMERG 0 /* System is unusable */
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#define LOG_ALERT 1 /* Action must be taken immediately */
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#define LOG_CRIT 2 /* Critical conditions */
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#define LOG_ERR 3 /* Error conditions */
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#define LOG_WARNING 4 /* Warning conditions */
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#define LOG_NOTICE 5 /* Normal, but significant, condition */
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#define LOG_INFO 6 /* Informational message */
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#define LOG_DEBUG 7 /* Debug-level message */
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/* Used with setlogmask() */
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#define LOG_MASK(p) (1 << (p))
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#define LOG_UPTO(p) ((1 << ((p)+1)) - 1)
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#define LOG_ALL 0xff
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#if defined(CONFIG_SYSLOG_CHAR) && !defined(CONFIG_SYSLOG_DEVPATH)
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# define CONFIG_SYSLOG_DEVPATH "/dev/ttyS1"
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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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* @ingroup fs
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* @brief system printf
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*
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* @par Description:
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* This API is used to generates a log message
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*
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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* @param priority [IN] Type #int the level values
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* @param format [IN] Type #const char * as in printf and any arguments to the format
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*
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* @par Dependency:
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* <ul><li>syslog.h: the header file that contains the API declaration.</li></ul>
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* @see NULL
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* @since LiteOS V100R001C00
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*/
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void syslog(int priority, const char *fmt, ...);
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void vsyslog(int priority, const char *fmt, va_list ap);
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/****************************************************************************
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* Name: setlogmask
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*
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* Description:
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* The setlogmask() function sets the logmask and returns the previous
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* mask. If the mask argument is 0, the current logmask is not modified.
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*
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* The SYSLOG priorities are: LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR,
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* LOG_WARNING, LOG_NOTICE, LOG_INFO, and LOG_DEBUG. The bit corresponding
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* to a priority p is LOG_MASK(p); LOG_UPTO(p) provides the mask of all
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* priorities in the above list up to and including p.
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*
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* Per OpenGroup.org "If the maskpri argument is 0, the current log mask
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* is not modified." In this implementation, the value zero is permitted
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* in order to disable all syslog levels.
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*
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* REVISIT: Per POSIX the syslog mask should be a per-process value but in
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* NuttX, the scope of the mask is dependent on the nature of the build:
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*
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* Flat Build: There is one, global SYSLOG mask that controls all output.
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* Protected Build: There are two SYSLOG masks. One within the kernel
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* that controls only kernel output. And one in user-space that controls
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* only user SYSLOG output.
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* Kernel Build: The kernel build is compliant with the POSIX requirement:
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* There will be one mask for for each user process, controlling the
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* SYSLOG output only form that process. There will be a separate mask
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* accessable only in the kernel code to control kernel SYSLOG output.
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*
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****************************************************************************/
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int setlogmask(int mask);
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#ifdef CONFIG_SYSLOG_CHAR
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/**
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* @ingroup fs
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* @brief initialize character device
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*
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* @par Description:
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* This API is used to initialize character device (or file)
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* at CONFIG_SYSLOG_DEVPATH as the SYSLOG sink.
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*
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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*
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* @retval #OK initialize successfully.
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* @retval #ENOENT CONFIG_SYSLOG_DEVPATH not found
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* @retval #ENXIO not a driver node
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* @retval #EACCES no operation function
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* @retval #1 open failed
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* @par Dependency:
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* <ul><li>syslog.h: the header file that contains the API declaration.</li></ul>
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* @see NULL
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* @since LiteOS V100R001C00
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*/
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EXTERN int syslog_initialize(void);
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/**
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* @ingroup fs
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* @brief the low-level system logging interface
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*
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* @par Description:
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* This is the low-level system logging interface. The debugging/syslogging
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* interfaces are syslog() and lowsyslog(). The difference is that
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* the syslog() function writes to syslogging device (usually fd=1, stdout)
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* whereas lowsyslog() uses a lower level interface that works from
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* interrupt handlers. This function is a a low-level interface used to
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* implement lowsyslog().
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*
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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* @param ch [IN] Type #int character to be input
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*
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* @retval #EOF syslog input failed
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* @retval #NOT EOF syslog input successfully
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* @par Dependency:
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* <ul><li>fs.h: the header file that contains the API declaration.</li></ul>
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* @see
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* @since LiteOS V100R001C00
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*/
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int syslog_putc(int ch);
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#endif
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif
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#endif /* __cplusplus */
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#endif /* __INCLUDE_SYSLOG_H */
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