syslog
[User Protocols]

Collaboration diagram for syslog:

---

Detailed Description

Syslog protocol support.

Defines
#define	SYSLOG_MAXBUF   256
	Syslog message buffer size.
Functions
void	vsyslog (int pri, CONST char *fmt, va_list ap)
	Print log message.
void	syslog (int pri, CONST char *fmt,...)
	Print log message.
void	vsyslog_P (int pri, PGM_P fmt, va_list ap)
	Print log message.
void	syslog_P (int pri, PGM_P fmt,...)
	Print log message.
int	setlogmask (int logmask)
	Set the log priority mask level.
u_long	setlogserver (u_long ip, u_short port)
	Set the log server's IP address.
void	openlog (CONST char *ident, int logstat, int logfac)
	Open logging for specialized processing.
void	closelog (void)
	Release system resources occupied by syslog().

---

Function Documentation

void vsyslog (  int  pri, CONST char *  fmt, va_list  ap )

Print log message. Alternate form of syslog(), in which the arguments have already been captured using the variable-length argument facilities. Parameters: pri  Priority level of this message. See syslog(). fmt  Format string containing conversion specifications like printf. ap  List of arguments.

void syslog (  int  pri, CONST char *  fmt,   ... )

Print log message. The message is tagged with priority. Parameters: pri  Priority level of this message, selected from the following ordered list (high to low): LOG_EMERG A panic condition. LOG_ALERT A condition that should be corrected immediately. LOG_CRIT Critical conditions, e.g., hard device errors. LOG_ERR Errors. LOG_WARNING Warning messages. LOG_NOTICE Conditions that are not error conditions, but should possibly be handled specially. LOG_INFO Informational messages. LOG_DEBUG Messages that contain information normally of use only when debugging a program. fmt  Format string containing conversion specifications like printf.

void vsyslog_P (  int  pri, PGM_P  fmt, va_list  ap )

Print log message. Alternate form of syslog(), in which the arguments have already been captured using the variable-length argument facilities. Parameters: pri  Priority level of this message. See syslog(). fmt  Format string containing conversion specifications like printf. ap  List of arguments.

void syslog_P (  int  pri, PGM_P  fmt,   ... )

Print log message. The message is tagged with priority. Parameters: pri  Priority level of this message, selected from the following ordered list (high to low): LOG_EMERG A panic condition. LOG_ALERT A condition that should be corrected immediately. LOG_CRIT Critical conditions, e.g., hard device errors. LOG_ERR Errors. LOG_WARNING Warning messages. LOG_NOTICE Conditions that are not error conditions, but should possibly be handled specially. LOG_INFO Informational messages. LOG_DEBUG Messages that contain information normally of use only when debugging a program. fmt  Format string containing conversion specifications like printf.

int setlogmask (  int  logmask  )

Set the log priority mask level. Calls to syslog() with a priority not set are ignored. The default allows all priorities to be logged. Parameters: logmask  New priority mask. Returns: Previous mask.

u_long setlogserver (  u_long  ip, u_short  port )

Set the log server's IP address. Parameters: ip  IP address in network byte order. If 0, no messages will be sent out. port  Port number. If 0, then standard port is used. Returns: Previous IP.

void openlog (  CONST char *  ident, int  logstat, int  logfac )

Open logging for specialized processing. This function provides for more specialized processing of the messages sent by syslog() and vsyslog(). Parameters: ident  This string that will be prepended to every message. logstat  A bit field specifying logging options, which is formed by OR'ing one or more of the following values: LOG_CONS Ignored but accepted for compatibility. LOG_NDELAY Ignored but accepted for compatibility. LOG_PERROR Additionally write the message to standard error output. LOG_PID Ignored but accepted for compatibility. logfac  Encodes a default facility to be assigned to all messages that do not have an explicit facility encoded: LOG_AUTH The authorization system: LOG_AUTHPRIV The same as LOG_AUTH. LOG_CRON The cron daemon, LOG_DAEMON System daemons, that are not provided for explicitly by other facilities. LOG_FTP The file transfer protocol daemon, LOG_KERN Messages generated by the kernel. These should not be generated by applications. LOG_LPR The line printer spooling system. LOG_MAIL The mail system. LOG_NEWS The network news system. LOG_SYSLOG Messages generated internally by syslog. LOG_USER This is the default facility identifier if none is specified. LOG_UUCP The UUCP system. LOG_LOCAL0..LOG_LOCAL7 Reserved for local use.

---