


Sys::Syslog(3p)  Perl Programmers Reference Guide Sys::Syslog(3p)


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;


DESCRIPTION
       Sys::Syslog is an interface to the UNIX syslog(3) program.
       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
            contains 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 _PATH_LOG in syslog.ph.  A value
            of 'inet' will connect to an INET socket returned by
            getservbyname().  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).




29/Apr/1999            perl 5.005, patch 03                     1





Sys::Syslog(3p)  Perl Programmers Reference Guide Sys::Syslog(3p)


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)


DEPENDENCIES
       Sys::Syslog needs syslog.ph, which can be created with
       h2ph.

SEE ALSO
       the syslog(3) manpage

AUTHOR
       Tom Christiansen <tchrist@perl.com> and Larry Wall
       <larry@wall.org>.  UNIX domain sockets added by Sean
       Robinson <robinson_s@sc.maricopa.edu> with support from
       Tim Bunce <Tim.Bunce@ig.co.uk> and the perl5-porters
       mailing list.



























29/Apr/1999            perl 5.005, patch 03                     2


