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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