1.\" $NetBSD: log.9,v 1.10 2008/04/30 13:10:58 martin Exp $ 2.\" 3.\" Copyright (c) 1997 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Michael Graff. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd May 12, 1997 31.Dt LOG 9 32.Os 33.Sh NAME 34.Nm log 35.Nd log a message from the kernel through the 36.Pa /dev/klog 37device 38.Sh SYNOPSIS 39.In sys/syslog.h 40.Ft void 41.Fo "log" 42.Fa "int level" 43.Fa "const char *format" 44.Fa "..." 45.Fc 46.Sh DESCRIPTION 47The 48.Fn log 49function allows the kernel to send messages to user processes listening 50on 51.Pa /dev/klog . 52Usually 53.Xr syslogd 8 54monitors 55.Pa /dev/klog 56for these messages and writes them to a log file. 57.Pp 58All messages are logged using facility 59.Dv LOG_KERN . 60See 61.Xr syslog 3 62for a listing of log levels. 63.Sh SEE ALSO 64.Xr syslog 3 , 65.Xr syslogd 8 66