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Revision 1.3, Tue Jan 7 21:54:17 2014 UTC (8 years, 5 months ago) by mbalmer
Use 5.2 usage pattern in the synopsis.
.\" $NetBSD: syslog.3lua,v 1.3 2014/01/07 21:54:17 mbalmer Exp $ .\" .\" Copyright (c) 2013, 2014 Marc Balmer <mbalmer@NetBSD.org>. .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" .Dd January 7, 2014 .Dt SYSLOG 3lua .Os .Sh NAME .Nm syslog .Nd access .Xr syslog 3 functionality from Lua .Sh SYNOPSIS .Cd "local syslog = require 'syslog'" .Pp .Bl -tag -width XXXX -compact .It Dv syslog.openlog(ident, logopt, facility) .It Dv syslog.syslog(priority, message) .It Dv syslog.closelog() .It Dv oldmask = syslog.setlogmask(maskpri) .El .Sh DESCRIPTION The .Nm Lua binding provides access to the .Xr syslog 3 funcionality. .Pp .Bl -tag -width XXXX -compact .Pp .It Dv syslog.openlog(ident, logopt, facility) The syslog.openlog() function provides for more specialized processing of the messages sent by syslog.syslog(). The parameter .Ar ident is a string that will be prepended to every message. The .Ar logopt argument is a bit field specifying logging options, which is formed by adding one or more of the following values: .Pp .Bl -tag -width XXXX -compact .It Dv syslog.LOG_CONS If .Fn syslog.syslog cannot pass the message to syslogd(8) it will attempt to write the message to the console (``/dev/console''). .Pp .It Dv 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. .Pp .It Dv syslog.LOG_PERROR Write the message to standard error output as well to the system log. .Pp .It Dv syslog.LOG_PID Log the process id with each message: useful for identifying instantiations of daemons. (This PID is placed within brackets between the ident and the message.) .El .Pp The facility parameter encodes a default facility to be assigned to all messages that do not have an explicit facility encoded: .Pp .Bl -tag -width XXXX -compact .It Dv syslog.LOG_AUTH The authorization system: login(1), su(1), getty(8), etc. .Pp .It Dv syslog.LOG_AUTHPRIV The same as LOG_AUTH, but logged to a file readable only by selected individuals. .Pp .It Dv syslog.LOG_CRON The cron daemon: cron(8). .Pp .It Dv syslog.LOG_DAEMON System daemons, such as routed(8), that are not provided for explicitly by other facilities. .Pp .It Dv syslog.LOG_FTP The file transfer protocol daemon: ftpd(8). .Pp .It Dv syslog.LOG_KERN Messages generated by the kernel. These cannot be generated by any user processes. .Pp .It Dv syslog.LOG_LPR The line printer spooling system: lpr(1), lpc(8), lpd(8), etc. .Pp .It Dv syslog.LOG_MAIL The mail system. .Pp .It Dv syslog.LOG_NEWS The network news system. .Pp .It Dv syslog.LOG_SYSLOG Messages generated internally by syslogd(8). .Pp .It Dv syslog.LOG_USER Messages generated by random user processes. This is the default facility identifier if none is specified. .Pp .It Dv syslog.LOG_UUCP The uucp system. .Pp .It Dv syslog.LOG_LOCAL0 Reserved for local use. Similarly for syslog.LOG_LOCAL1 through syslog.LOG_LOCAL7 .El .Pp .It Dv syslog.syslog(priority, message) The .Fn syslog function writes .Ar 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)). .Pp The .Ar message is tagged with .Ar priority . Priorities are encoded as a .Ar facility and a .Ar level . The facility describes the part of the system generating the message. The level is selected from the following ordered (high to low) list: .Pp .Bl -tag -width XXXX -compact .It Dv syslog.LOG_EMERG A panic condition. This is normally broadcast to all users. .Pp .It Dv syslog.LOG_ALERT A condition that should be corrected immediately, such as a corrupted system database. .Pp .It Dv syslog.LOG_CRIT Critical conditions, e.g., hard device errors. .Pp .It Dv syslog.LOG_ERR Errors. .Pp .It Dv syslog.LOG_WARNING Warning messages. .Pp .It Dv syslog.LOG_NOTICE Conditions that are not error conditions, but should possibly be handled specially. .Pp .It Dv syslog.LOG_INFO Informational messages. .Pp .It Dv syslog.LOG_DEBUG Messages that contain information normally of use only when debugging a program. .El .Pp .It Dv syslog.closelog() The .Fn syslog.closelog function can be used to close the log file. .Pp .It Dv oldmask = syslog.setlogmask(maskpri) The .Fn setlogmask function sets the log priority mask to maskpri and returns the previous mask. Calls to .Fn syslog with a priority not set in maskpri are rejected. .El .Sh SEE ALSO .Xr lua 1 , .Xr luac 1 , .Xr syslog 3 , .Xr intro 3lua , .Xr syslogd 8 .Sh HISTORY A .Nm Lua binding manual appeared in .Nx 7.0 . .Sh AUTHORS .An -nosplit The .Nm Lua binding was written by .An Marc Balmer Aq Mt mbalmer@NetBSD.org .