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35 .\" @(#)dm.8 8.1 (Berkeley) 5/31/93
48 is a program used to regulate game playing.
50 expects to be invoked with the name of a game that a user wishes to play.
51 This is done by creating symbolic links to
55 for all of the regulated games.
56 The actual binaries for these games should be placed in a
59 .Pa /usr/lib/games/dm ,
60 that may only be accessed by the
64 determines if the requested game is available and, if so, runs it.
67 controls the conditions under which games may
75 If the file exists, no game playing is allowed; the contents of the file
76 will be displayed to any user requesting a game.
78 .Bl -tag -width /var/games/games.log -compact
82 turns off game playing
83 .It Pa /usr/lib/games/dm
84 directory of ``real'' binaries
85 .It Pa /var/games/games.log
95 .Sh SECURITY CONSIDERATIONS
96 Two issues result from
98 running the games setgid
100 First, all games that allow users to run
102 commands should carefully
103 set both the real and effective group id's immediately before executing
105 Probably more important is that
107 never be setgid anything but
109 so that compromising a game will result only in
110 the user's ability to play games at will.
111 Secondly, games which previously had no reason to run setgid and which
112 accessed user files may have to be modified.