DM

Section: Maintenance Commands (8)
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BSD mandoc
 

NAME

dm - dungeon master  

SYNOPSIS

ln -s dm game  

DESCRIPTION

Dm is a program used to regulate game playing. 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 dm in the directory /usr/games for all of the regulated games. The actual binaries for these games should be placed in a ``hidden'' directory, /usr/games/hide that may only be accessed by the dm program. Dm determines if the requested game is available and, if so, runs it. The file /etc/dm.conf controls the conditions under which games may be run.

The file /etc/nogames may be used to ``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.  

FILES

/etc/dm.conf
configuration file
/etc/nogames
turns off game playing
/usr/games/hide
directory of ``real'' binaries
/var/log/games.log
game logging file

 

SEE ALSO

dm.conf5  

BUGS

Two problems result from dm running the games setuid ``games'' First, all games that allow users to run UNIX commands should carefully set both the real and effective user id's immediately before executing those commands. Probably more important is that dm never be setuid anything but ``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.  

HISTORY

The dm command appeared in BSD 4.3 tahoe


 

Index

NAME
SYNOPSIS
DESCRIPTION
FILES
SEE ALSO
BUGS
HISTORY

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Time: 06:46:15 GMT, May 19, 2025