220 lines
8.5 KiB
C
220 lines
8.5 KiB
C
/****************************************************************************
|
|
* include/syslog.h
|
|
*
|
|
* Copyright (C) 2013-2014 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 __INCLUDE_SYSLOG_H
|
|
#define __INCLUDE_SYSLOG_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
/* Configuration ************************************************************/
|
|
/* Some interfaces in this file are currently only available within the
|
|
* kernel. They could are available to applications in the flat build and
|
|
* could be made available in the protected and kernel builds IF system
|
|
* calls were added.
|
|
*
|
|
* REVISIT: For example, I don't yet know how to pass a va_list in a system
|
|
* call so none of those interfaces.
|
|
*
|
|
* NOTE: In protected and kernel builds, there may also be a limit to the
|
|
* number of parameters that are supported in the variable parameter list.
|
|
*/
|
|
|
|
#if !defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)
|
|
# undef __KERNEL__
|
|
# define __KERNEL__ 1
|
|
#endif
|
|
|
|
/* syslog interface *********************************************************/
|
|
/* The option argument to openlog() is an OR of any of these:
|
|
*
|
|
* LOG_CONS - Write directly to system console if there is an error
|
|
* while sending to system logger.
|
|
* LOG_NDELAY - Open the connection immediately (normally, the connection
|
|
* is opened when the first message is logged).
|
|
* LOG_NOWAIT - Don't wait for child processes that may have been created
|
|
* while logging the message.
|
|
* LOG_ODELAY - The converse of LOG_NDELAY; opening of the connection is
|
|
* delayed until syslog() is called. (This is the default,
|
|
* and need not be specified.)
|
|
* LOG_PERROR - (Not in POSIX.1-2001 or POSIX.1-2008.) Print to stderr
|
|
* as well (Linux).
|
|
* LOG_PID - Include PID with each message.
|
|
*/
|
|
|
|
/* The facility argument is used to specify what type of program is logging
|
|
* the message. This lets the configuration file specify that messages from
|
|
* different facilities will be handled differently.
|
|
*
|
|
* LOG_AUTH - Security/authorization messages
|
|
* LOG_AUTHPRIV - Security/authorization messages (private)
|
|
* LOG_CRON - Clock daemon (cron and at)
|
|
* LOG_DAEMON - System daemons without separate facility value
|
|
* LOG_FTP - Ftp daemon
|
|
* LOG_KERN - Lernel messages (these can't be generated from user
|
|
* processes)
|
|
* LOG_LOCAL0 through LOG_LOCAL7 - Reserved for local use
|
|
* LOG_LPR - Line printer subsystem
|
|
* LOG_MAIL - Mail subsystem
|
|
* LOG_NEWS - USENET news subsystem
|
|
* LOG_SYSLOG - Messages generated internally by syslogd(8)
|
|
* LOG_USER - Generic user-level messages (default)
|
|
* LOG_UUCP - UUCP subsystem
|
|
*/
|
|
|
|
/* This determines the importance of the message. The levels are, in order
|
|
* of decreasing importance:
|
|
*/
|
|
|
|
#define LOG_EMERG 0 /* System is unusable */
|
|
#define LOG_ALERT 1 /* Action must be taken immediately */
|
|
#define LOG_CRIT 2 /* Critical conditions */
|
|
#define LOG_ERR 3 /* Error conditions */
|
|
#define LOG_WARNING 4 /* Warning conditions */
|
|
#define LOG_NOTICE 5 /* Normal, but significant, condition */
|
|
#define LOG_INFO 6 /* Informational message */
|
|
#define LOG_DEBUG 7 /* Debug-level message */
|
|
|
|
/* Used with setlogmask() */
|
|
|
|
#define LOG_MASK(p) (1 << (p))
|
|
#define LOG_UPTO(p) ((1 << (p)) - 1)
|
|
#define LOG_ALL 0xff
|
|
|
|
/****************************************************************************
|
|
* Public Type Declarations
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
#if 0 /* Not supported */
|
|
void openlog(FAR const char *ident, int option, int facility);
|
|
void closelog(void);
|
|
#endif
|
|
|
|
/* These low-level debug APIs are provided by the NuttX library. These are
|
|
* normally accessed via the macros in debug.h. If the cross-compiler's
|
|
* C pre-processor supports a variable number of macro arguments, then those
|
|
* macros below will map all debug statements to one or the other of the
|
|
* following.
|
|
*
|
|
* NOTE: In protected and kernel builds, there may be a limit to the number
|
|
* of parameter that are supported in the variable parameter list.
|
|
*/
|
|
|
|
int syslog(int priority, FAR const char *format, ...);
|
|
#ifdef __KERNEL__
|
|
int vsyslog(int priority, FAR const char *src, va_list ap);
|
|
#endif
|
|
|
|
#ifdef CONFIG_ARCH_LOWPUTC
|
|
/* These are non-standard, low-level system logging interface. The
|
|
* difference between syslog() and lowsyslog() is that the syslog()
|
|
* interface writes to the syslog device (usually fd=1, stdout) whereas
|
|
* lowsyslog() uses a lower level interface that works even from interrupt
|
|
* handlers.
|
|
*
|
|
* NOTE: In protected and kernel builds, there may be a limit to the number
|
|
* of parameters that are supported in the variable parameter list.
|
|
*/
|
|
|
|
int lowsyslog(int priority, FAR const char *format, ...);
|
|
# ifdef __KERNEL__
|
|
int lowvsyslog(int priority, FAR const char *format, va_list ap);
|
|
# endif
|
|
|
|
#else
|
|
/* If the platform cannot support lowsyslog, then we will substitute the
|
|
* standard syslogging functions. These will, however, probably cause
|
|
* problems if called from interrupt handlers, depending upon the nature of
|
|
* the underlying syslog device.
|
|
*/
|
|
|
|
# ifdef CONFIG_CPP_HAVE_VARARGS
|
|
# define lowsyslog(p,f,...) syslog(p,f,##__VA_ARGS__)
|
|
# else
|
|
# define lowsyslog (void)
|
|
# endif
|
|
# ifdef __KERNEL__
|
|
# define lowvsyslog(p,f,a) vsyslog(p,f,a)
|
|
# endif
|
|
#endif
|
|
|
|
/* The setlogmask() function sets the logmask and returns the previous
|
|
* mask. If the mask argument is 0, the current logmask is not modified.
|
|
*
|
|
* REVISIT: In the current implementation, the syslog interfaces are not
|
|
* part of libc, but are part of the kernel logic. Per POSIX the syslog
|
|
* mask should be a per-process value but in this implementation it is
|
|
* a single, kernel value. This could easily fixed (at least in the
|
|
* kernel build) by simply moving all of the syslog logic back into libc
|
|
* (where it once was).
|
|
*/
|
|
|
|
int setlogmask(int mask);
|
|
|
|
#if defined(CONFIG_SYSLOG_ENABLE) && defined(__KERNEL__)
|
|
/* Non-standard interface to enable or disable syslog output */
|
|
|
|
void syslog_enable(bool enable);
|
|
#endif
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* __INCLUDE_SYSLOG_H */
|