HP-UX Reference (11i v1 05/09) - 3 Library Functions N-Z (vol 7)

syslog(3C) syslog(3C)

EXAMPLES

who logs a message regarding some sort of unexpected and serious error:

syslog(LOG_ALERT, "who: internal error 23");

ftpd

uses openlog() to arrange to log its process ID, to log to the console if necessary, and to log in the

name of the daemon facility:

openlog("ftpd", LOG_PID|LOG_CONS, LOG_DAEMON);

Arrange to log messages only at levels LOG_ERR

and lower:

setlogmask(LOG_UPTO(LOG_ERR));

Typical usage of

syslog() to log a connection:

syslog(LOG_INFO, "Connection from host %s", CallingHost);

If the facility has not been set with

openlog(), it defaults to LOG_USER.

Explicitly set the facility for this message:

syslog(LOG_INFO|LOG_LOCAL2, "foobar error: %m");

WARNINGS

A call to syslog() has no effect unless the syslog daemon (syslogd(1M)) is running.

openlog() does

not copy and store the ident string internally; it stores only a character pointer. Therefore it is the respon-

sibility of the programmer to make sure that the ident argument points to the correct string until the log

ﬁle is closed.

AUTHOR

syslog() was developed by the University of California, Berkeley.