111 lines
3.6 KiB
Groff
111 lines
3.6 KiB
Groff
.\" Copyright (c) 1987, 1991, 1993
|
|
.\" The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. 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.
|
|
.\"
|
|
.\" @(#)dm.8 8.1 (Berkeley) 5/31/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 31, 1993
|
|
.Dt DM 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm dm
|
|
.Nd dungeon master
|
|
.Sh SYNOPSIS
|
|
.Nm ln
|
|
.Fl s Cm dm Ar game
|
|
.Sh DESCRIPTION
|
|
.Nm Dm
|
|
is a program used to regulate game playing.
|
|
.Nm Dm
|
|
expects to be invoked with the name of a game that a user wishes to play.
|
|
This is done by creating symbolic links to
|
|
.Nm dm ,
|
|
in the directory
|
|
.Pa /usr/games
|
|
for all of the regulated games.
|
|
The actual binaries for these games should be placed in a
|
|
.Dq hidden
|
|
directory,
|
|
.Pa /usr/games/hide ,
|
|
that may only be accessed by the
|
|
.Nm dm
|
|
program.
|
|
.Nm Dm
|
|
determines if the requested game is available and, if so, runs it.
|
|
The file
|
|
.Pa /etc/dm.conf
|
|
controls the conditions under which games may
|
|
be run.
|
|
.Pp
|
|
The file
|
|
.Pa /etc/nogames
|
|
may be used to
|
|
.Dq turn off
|
|
game playing.
|
|
If the file exists, no game playing is allowed; the contents of the file
|
|
will be displayed to any user requesting a game.
|
|
.Sh FILES
|
|
.Bl -tag -width /var/log/games.log -compact
|
|
.It Pa /etc/dm.conf
|
|
configuration file
|
|
.It Pa /etc/nogames
|
|
turns off game playing
|
|
.It Pa /usr/games/hide
|
|
directory of ``real'' binaries
|
|
.It Pa /var/log/games.log
|
|
game logging file
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr dm.conf 5
|
|
.Sh BUGS
|
|
Two problems result from
|
|
.Nm dm
|
|
running the games setuid
|
|
.Dq games .
|
|
First, all games that allow users to run
|
|
.Tn UNIX
|
|
commands should carefully
|
|
set both the real and effective user id's immediately before executing
|
|
those commands. Probably more important is that
|
|
.Nm dm
|
|
never be setuid
|
|
anything but
|
|
.Dq games
|
|
so that compromising a game will result only in
|
|
the user's ability to play games at will. Secondly, games which previously
|
|
had no reason to run setuid and which accessed user files may have to
|
|
be modified.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm dm
|
|
command appeared in
|
|
.Bx 4.3 tahoe .
|