.\"
.\" Copyright (c) 1997, 1998 Hellmuth Michaelis. All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
.\" are met:
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\"	$Id: isdndebug.8,v 1.4 1998/12/05 18:03:47 hm Exp $
.\"
.\"	last edit-date: [Sat Dec  5 18:13:34 1998]
.\"
.\"	-hm	writing manual pages
.\"	-hm	getting uptodate
.\"
.\"
.Dd July 9, 1998
.Dt isdndebug 8
.Sh NAME
.Nm isdndebug
.Nd control debugging handling inside isdn4bsd kernel
.Sh SYNOPSIS
.Nm
.Op Fl e
.Op Fl g
.Op Fl h
.Op Fl l Ar layer
.Op Fl m
.Op Fl r
.Op Fl s Ar value
.Op Fl u Ar unit
.Op Fl z
.Op Fl H
.Sh DESCRIPTION
.Nm isdndebug
is part of the isdn4bsd package and is used to control debugging output
of the isdn4bsd kernel part. Every layer of the isdn4bsd kernel uses a
debugging mask which can be manipulated using this utility.
.Pp
A second usage of
.Nm
is to display and reset the HSCX error counters.
.Pp
The following options are available:
.Bl -tag -width Ds
.It Fl e
Set debugging mask for the selected layer(s) to display errors only.
.It Fl g
Get the debugging mask for the selected layer(s).
.It Fl h
Display the the HSCX error counters.
.It Fl l
Specify the layer for which a command applies. Default is all layers.
.It Fl m
Set debugging mask for the selected layer(s) to display all possible
debugging messages (maximum output).
.It Fl r
Set debugging mask for the selected layer(s) to the compiled in default
(reset).
.It Fl s
Set debugging mask for the selected layer(s) to value. Value can be
specified in any number base supported by
.Xr sscanf 3 .
.It Fl u
Set the unit numbers for the -h and -H flags.
.It Fl z
Set debugging mask for the selected layer(s) to no output at all (zero).
.It Fl H
Reset the HSCX error counters to zero.
.Pp
.Sh FILES
/dev/i4bctl

.Sh EXAMPLES
The command:
.Bd -literal -offset indent
isdndebug -g
.Ed
.Pp
displays the current debugging level for all ISDN layers

.Sh AUTHOR
The
.Nm
utility and this manpage were written by Hellmuth Michaelis. He can be
contacted at hm@kts.org.