syslog(3lua) - NetBSD Manual Pages

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SYSLOG(3lua)                         LOCAL                        SYSLOG(3lua)


NAME

     syslog -- access syslog(3) functionality from Lua


SYNOPSIS

     local syslog = require 'syslog'

     syslog.openlog(ident, logopt, facility)
     syslog.syslog(priority, message)
     syslog.closelog()
     oldmask = syslog.setlogmask(maskpri)


DESCRIPTION

     The syslog Lua binding provides access to the syslog(3) funcionality.

     syslog.openlog(ident, logopt, facility)
           The syslog.openlog() function provides for more specialized pro-
           cessing of the messages sent by syslog.syslog().  The parameter
           ident is a string that will be prepended to every message.  The
           logopt argument is a bit field specifying logging options, which is
           formed by adding one or more of the following values:

           syslog.LOG_CONS
                 If syslog.syslog() cannot pass the message to syslogd(8) it
                 will attempt to write the message to the console (``/dev/con-
                 sole'').

           syslog.LOG_NDELAY
                 Open the connection to syslogd(8) immediately.  Normally the
                 open is delayed until the first message is logged.  Useful
                 for programs that need to manage the order in which file
                 descriptors are allocated.

           syslog.LOG_PERROR
                 Write the message to standard error output as well to the
                 system log.

           syslog.LOG_PID
                 Log the process id with each message: useful for identifying
                 instantiations of daemons.  (This PID is placed within brack-
                 ets between the ident and the message.)

           The facility parameter encodes a default facility to be assigned to
           all messages that do not have an explicit facility encoded:

           syslog.LOG_AUTH
                 The authorization system: login(1), su(1), getty(8), etc.

           syslog.LOG_AUTHPRIV
                 The same as LOG_AUTH, but logged to a file readable only by
                 selected individuals.

           syslog.LOG_CRON
                 The cron daemon: cron(8).

           syslog.LOG_DAEMON
                 System daemons, such as routed(8), that are not provided for
                 explicitly by other facilities.

           syslog.LOG_FTP
                 The file transfer protocol daemon: ftpd(8).

           syslog.LOG_KERN
                 Messages generated by the kernel.  These cannot be generated
                 by any user processes.

           syslog.LOG_LPR
                 The line printer spooling system: lpr(1), lpc(8), lpd(8),
                 etc.

           syslog.LOG_MAIL
                 The mail system.

           syslog.LOG_NEWS
                 The network news system.

           syslog.LOG_SYSLOG
                 Messages generated internally by syslogd(8).

           syslog.LOG_USER
                 Messages generated by random user processes.  This is the
                 default facility identifier if none is specified.

           syslog.LOG_UUCP
                 The uucp system.

           syslog.LOG_LOCAL0
                 Reserved for local use.  Similarly for syslog.LOG_LOCAL1
                 through syslog.LOG_LOCAL7

     syslog.syslog(priority, message)
           The syslog() function writes message to the system message logger.
           The message is then written to the system console, log files,
           logged-in users, or forwarded to other machines as appropriate (see
           syslogd(8)).

           The message is tagged with priority.  Priorities are encoded as a
           facility and a level.  The facility describes the part of the sys-
           tem generating the message.  The level is selected from the follow-
           ing ordered (high to low) list:

           syslog.LOG_EMERG
                 A panic condition.  This is normally broadcast to all users.

           syslog.LOG_ALERT
                 A condition that should be corrected immediately, such as a
                 corrupted system database.

           syslog.LOG_CRIT
                 Critical conditions, e.g., hard device errors.

           syslog.LOG_ERR
                 Errors.

           syslog.LOG_WARNING
                 Warning messages.

           syslog.LOG_NOTICE
                 Conditions that are not error conditions, but should possibly
                 be handled specially.

           syslog.LOG_INFO
                 Informational messages.

           syslog.LOG_DEBUG
                 Messages that contain information normally of use only when
                 debugging a program.

     syslog.closelog()
           The syslog.closelog() function can be used to close the log file.

     oldmask = syslog.setlogmask(maskpri)
           The setlogmask() function sets the log priority mask to maskpri and
           returns the previous mask.  Calls to syslog() with a priority not
           set in maskpri are rejected.


SEE ALSO

     lua(1), luac(1), syslog(3), intro(3lua), syslogd(8)


HISTORY

     A syslog Lua binding manual appeared in NetBSD 7.0.


AUTHORS

     The syslog Lua binding was written by Marc Balmer <mbalmer@NetBSD.org>.

NetBSD 9.0                      January 7, 2014                     NetBSD 9.0