Sys::Syslog(3) Perl Programmers Reference Guide Sys::Syslog(3)NAME
Sys::Syslog, openlog, closelog, setlogmask, syslog - Perl
interface to the UNIX syslog(3) calls
SYNOPSIS
use Sys::Syslog; # all except setlogsock, or:
use Sys::Syslog qw(:DEFAULT setlogsock); # default set, plus setlogsock
setlogsock $sock_type;
openlog $ident, $logopt, $facility;
syslog $priority, $format, @args;
$oldmask = setlogmask $mask_priority;
closelog;
DESCRIPTIONSys::Syslog is an interface to the UNIX "syslog(3)" pro
gram. Call "syslog()" with a string priority and a list
of "printf()" args just like "syslog(3)".
Syslog provides the functions:
openlog $ident, $logopt, $facility
$ident is prepended to every message. $logopt con
tains zero or more of the words pid, ndelay, cons,
nowait. $facility specifies the part of the system
syslog $priority, $format, @args
If $priority permits, logs ($format, @args) printed as
by "printf(3V)", with the addition that %m is replaced
with ""$!"" (the latest error message).
setlogmask $mask_priority
Sets log mask $mask_priority and returns the old mask.
setlogsock $sock_type (added in 5.004_02)
Sets the socket type to be used for the next call to
"openlog()" or "syslog()" and returns TRUE on success,
undef on failure.
A value of 'unix' will connect to the UNIX domain
socket returned by the "_PATH_LOG" macro (if you sys
tem defines it) in syslog.h. A value of 'inet' will
connect to an INET socket returned by getservbyname().
If "_PATH_LOG" is unavailable or if getservbyname()
fails, returns undef. Any other value croaks.
The default is for the INET socket to be used.
closelog
Closes the log file.
Note that "openlog" now takes three arguments, just like
"openlog(3)".
EXAMPLES
openlog($program, 'cons,pid', 'user');
syslog('info', 'this is another test');
syslog('mail|warning', 'this is a better test: %d', time);
closelog();
syslog('debug', 'this is the last test');
setlogsock('unix');
openlog("$program $$", 'ndelay', 'user');
syslog('notice', 'fooprogram: this is really done');
setlogsock('inet');
$! = 55;
syslog('info', 'problem was %m'); # %m == $! in syslog(3)SEE ALSOsyslog(3)AUTHOR
Tom Christiansen <tchrist@perl.com> and Larry Wall
<larry@wall.org>.
UNIX domain sockets added by Sean Robinson <robin_
son_s@sc.maricopa.edu> with support from Tim Bunce
<Tim.Bunce@ig.co.uk> and the perl5-porters mailing list.
Dependency on syslog.ph replaced with XS code by Tom
Hughes <tom@compton.nu>.
2001-03-18 perl v5.6.1 Sys::Syslog(3)
