initial import of 386bsd-0.1 sources

7 files changed, 718 insertions, 0 deletions

diff --git a/dm/Makefile b/dm/Makefile
new file mode 100644
index 00000000..d0d552bd
--- /dev/null
+++ b/dm/Makefile
@@ -0,0 +1,12 @@
+#	@(#)Makefile	5.7 (Berkeley) 9/30/90
+
+# -DLOG		log games
+PROG=	dm
+MAN8=	dm.0
+MAN5=	dm.conf.0
+BINGRP=	kmem
+BINMODE=6555
+DPADD=	${LIBUTIL}
+LDADD=	-lutil
+
+.include <bsd.prog.mk>
diff --git a/dm/dm.0 b/dm/dm.0
new file mode 100644
index 00000000..7afb5634
--- /dev/null
+++ b/dm/dm.0
@@ -0,0 +1,66 @@
+DM(8)                   386BSD System Manager's Manual                   DM(8)
+
+NNAAMMEE
+     ddmm - dungeon master
+
+SSYYNNOOPPSSIISS
+     llnn --ss ddmm _g_a_m_e
+
+DDEESSCCRRIIPPTTIIOONN
+     DDmm is a program used to regulate game playing.  DDmm expects to be invoked
+     with the name of a game that a user wishes to play.  This is done by cre-
+     ating symbolic links to ddmm, in the directory /_u_s_r/_g_a_m_e_s for all of the
+     regulated games.  The actual binaries for these games should be placed in
+     a ``hidden'' directory, /_u_s_r/_g_a_m_e_s/_h_i_d_e, that may only be accessed by the
+     ddmm program.  DDmm determines if the requested game is available and, if so,
+     runs it.  The file /_e_t_c/_d_m._c_o_n_f controls the conditions under which games
+     may be run.
+
+     The file /_e_t_c/_n_o_g_a_m_e_s 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.
+
+FFIILLEESS
+     /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
+
+SSEEEE AALLSSOO
+     dm.conf(5)
+
+BBUUGGSS
+     Two problems result from ddmm 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 com-
+     mands.  Probably more important is that ddmm 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 modi-
+     fied.
+
+HHIISSTTOORRYY
+     The ddmm command appeared in 4.3BSD-Tahoe.
+
+BSD Experimental                 July 23, 1991                               2
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dm/dm.8 b/dm/dm.8
new file mode 100644
index 00000000..4304600b
--- /dev/null
+++ b/dm/dm.8
@@ -0,0 +1,109 @@
+.\" Copyright (c) 1987, 1991 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	5.11 (Berkeley) 7/23/91
+.\"
+.Dd July 23, 1991
+.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 .
diff --git a/dm/dm.c b/dm/dm.c
new file mode 100644
index 00000000..bf820688
--- /dev/null
+++ b/dm/dm.c
@@ -0,0 +1,327 @@
+/*
+ * Copyright (c) 1987 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.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1987 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)dm.c	5.16 (Berkeley) 2/28/91";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <pwd.h>
+#include <utmp.h>
+#include <nlist.h>
+#include <stdio.h>
+#include <ctype.h>
+#include "pathnames.h"
+
+extern int errno;
+static time_t	now;			/* current time value */
+static int	priority = 0;		/* priority game runs at */
+static char	*game,			/* requested game */
+		*gametty;		/* from tty? */
+
+/*ARGSUSED*/
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	char *cp, *rindex(), *ttyname();
+	time_t time();
+
+	nogamefile();
+	game = (cp = rindex(*argv, '/')) ? ++cp : *argv;
+
+	if (!strcmp(game, "dm"))
+		exit(0);
+
+	gametty = ttyname(0);
+	(void)time(&now);
+	read_config();
+#ifdef LOG
+	logfile();
+#endif
+	play(argv);
+	/*NOTREACHED*/
+}
+
+/*
+ * play --
+ *	play the game
+ */
+play(args)
+	char **args;
+{
+	char pbuf[MAXPATHLEN], *strcpy(), *strerror();
+
+	(void)strcpy(pbuf, _PATH_HIDE);
+	(void)strcpy(pbuf + sizeof(_PATH_HIDE) - 1, game);
+	if (priority > 0)	/* < 0 requires root */
+		(void)setpriority(PRIO_PROCESS, 0, priority);
+	setgid(getgid());	/* we run setgid kmem; lose it */
+	execv(pbuf, args);
+	(void)fprintf(stderr, "dm: %s: %s\n", pbuf, strerror(errno));
+	exit(1);
+}
+
+/*
+ * read_config --
+ *	read through config file, looking for key words.
+ */
+read_config()
+{
+	FILE *cfp;
+	char lbuf[BUFSIZ], f1[40], f2[40], f3[40], f4[40], f5[40];
+
+	if (!(cfp = fopen(_PATH_CONFIG, "r")))
+		return;
+	while (fgets(lbuf, sizeof(lbuf), cfp))
+		switch(*lbuf) {
+		case 'b':		/* badtty */
+			if (sscanf(lbuf, "%s%s", f1, f2) != 2 ||
+			    strcasecmp(f1, "badtty"))
+				break;
+			c_tty(f2);
+			break;
+		case 'g':		/* game */
+			if (sscanf(lbuf, "%s%s%s%s%s",
+			    f1, f2, f3, f4, f5) != 5 || strcasecmp(f1, "game"))
+				break;
+			c_game(f2, f3, f4, f5);
+			break;
+		case 't':		/* time */
+			if (sscanf(lbuf, "%s%s%s%s", f1, f2, f3, f4) != 4 ||
+			    strcasecmp(f1, "time"))
+				break;
+			c_day(f2, f3, f4);
+		}
+	(void)fclose(cfp);
+}
+
+/*
+ * c_day --
+ *	if day is today, see if okay to play
+ */
+c_day(s_day, s_start, s_stop)
+	char *s_day, *s_start, *s_stop;
+{
+	static char *days[] = {
+		"sunday", "monday", "tuesday", "wednesday",
+		"thursday", "friday", "saturday",
+	};
+	static struct tm *ct;
+	int start, stop;
+
+	if (!ct)
+		ct = localtime(&now);
+	if (strcasecmp(s_day, days[ct->tm_wday]))
+		return;
+	if (!isdigit(*s_start) || !isdigit(*s_stop))
+		return;
+	start = atoi(s_start);
+	stop = atoi(s_stop);
+	if (ct->tm_hour >= start && ct->tm_hour < stop) {
+		fputs("dm: Sorry, games are not available from ", stderr);
+		hour(start);
+		fputs(" to ", stderr);
+		hour(stop);
+		fputs(" today.\n", stderr);
+		exit(0);
+	}
+}
+
+/*
+ * c_tty --
+ *	decide if this tty can be used for games.
+ */
+c_tty(tty)
+	char *tty;
+{
+	static int first = 1;
+	static char *p_tty;
+	char *rindex();
+
+	if (first) {
+		p_tty = rindex(gametty, '/');
+		first = 0;
+	}
+
+	if (!strcmp(gametty, tty) || p_tty && !strcmp(p_tty, tty)) {
+		fprintf(stderr, "dm: Sorry, you may not play games on %s.\n", gametty);
+		exit(0);
+	}
+}
+
+/*
+ * c_game --
+ *	see if game can be played now.
+ */
+c_game(s_game, s_load, s_users, s_priority)
+	char *s_game, *s_load, *s_users, *s_priority;
+{
+	static int found;
+	double load();
+
+	if (found)
+		return;
+	if (strcmp(game, s_game) && strcasecmp("default", s_game))
+		return;
+	++found;
+	if (isdigit(*s_load) && atoi(s_load) < load()) {
+		fputs("dm: Sorry, the load average is too high right now.\n", stderr);
+		exit(0);
+	}
+	if (isdigit(*s_users) && atoi(s_users) <= users()) {
+		fputs("dm: Sorry, there are too many users logged on right now.\n", stderr);
+		exit(0);
+	}
+	if (isdigit(*s_priority))
+		priority = atoi(s_priority);
+}
+
+/*
+ * load --
+ *	return 15 minute load average
+ */
+double
+load()
+{
+	double avenrun[3];
+
+	if (getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0])) < 0) {
+		fputs("dm: getloadavg() failed.\n", stderr);
+		exit(1);
+	}
+	return(avenrun[2]);
+}
+
+/*
+ * users --
+ *	return current number of users
+ *	todo: check idle time; if idle more than X minutes, don't
+ *	count them.
+ */
+users()
+{
+	
+	register int nusers, utmp;
+	struct utmp buf;
+
+	if ((utmp = open(_PATH_UTMP, O_RDONLY, 0)) < 0) {
+		(void)fprintf(stderr, "dm: %s: %s\n",
+		    _PATH_UTMP, strerror(errno));
+		exit(1);
+	}
+	for (nusers = 0; read(utmp, (char *)&buf, sizeof(struct utmp)) > 0;)
+		if (buf.ut_name[0] != '\0')
+			++nusers;
+	return(nusers);
+}
+
+nogamefile()
+{
+	register int fd, n;
+	char buf[BUFSIZ];
+
+	if ((fd = open(_PATH_NOGAMES, O_RDONLY, 0)) >= 0) {
+#define	MESG	"Sorry, no games right now.\n\n"
+		(void)write(2, MESG, sizeof(MESG) - 1);
+		while ((n = read(fd, buf, sizeof(buf))) > 0)
+			(void)write(2, buf, n);
+		exit(1);
+	}
+}
+
+/*
+ * hour --
+ *	print out the hour in human form
+ */
+hour(h)
+	int h;
+{
+	switch(h) {
+	case 0:
+		fputs("midnight", stderr);
+		break;
+	case 12:
+		fputs("noon", stderr);
+		break;
+	default:
+		if (h > 12)
+			fprintf(stderr, "%dpm", h - 12);
+		else
+			fprintf(stderr, "%dam", h);
+	}
+}
+
+#ifdef LOG
+/*
+ * logfile --
+ *	log play of game
+ */
+logfile()
+{
+	struct passwd *pw, *getpwuid();
+	FILE *lp;
+	uid_t uid;
+	int lock_cnt;
+	char *ctime();
+
+	if (lp = fopen(_PATH_LOG, "a")) {
+		for (lock_cnt = 0;; ++lock_cnt) {
+			if (!flock(fileno(lp), LOCK_EX))
+				break;
+			if (lock_cnt == 4) {
+				perror("dm: log lock");
+				(void)fclose(lp);
+				return;
+			}
+			sleep((u_int)1);
+		}
+		if (pw = getpwuid(uid = getuid()))
+			fputs(pw->pw_name, lp);
+		else
+			fprintf(lp, "%u", uid);
+		fprintf(lp, "\t%s\t%s\t%s", game, gametty, ctime(&now));
+		(void)fclose(lp);
+		(void)flock(fileno(lp), LOCK_UN);
+	}
+}
+#endif /* LOG */
diff --git a/dm/dm.conf.0 b/dm/dm.conf.0
new file mode 100644
index 00000000..3a1e3648
--- /dev/null
+++ b/dm/dm.conf.0
@@ -0,0 +1,66 @@
+DM.CONF(5)                386BSD Programmer's Manual                DM.CONF(5)
+
+NNAAMMEE
+     ddmm..ccoonnff - dm configuration file
+
+DDEESSCCRRIIPPTTIIOONN
+     The dm.conf file is the configuration file for the dm(8) program.  It
+     consists of lines beginning with one of three keywords, ``badtty'',
+     ``game'', and ``time''.  All other lines are ignored.
+
+     Any tty listed after the keyword ``badtty'' may not have games played on
+     it.  Entries consist of two white-space separated fields: the string
+     ``badtty'' and the ttyname as returned by ttyname(3).  For example, to
+     keep the uucp dialout, ``tty19'', from being used for games, the entry
+     would be:
+
+           badtty  /dev/tty19
+
+     Any day/hour combination listed after the keyword ``time'' will disallow
+     games during those hours.  Entries consist of four white-space separated
+     fields: the string ``time'', the unabbreviated day of the week and the
+     beginning and ending time of a period of the day when games may not be
+     played.  The time fields are in a 0 based, 24-hour clock.  For example,
+     the following entry allows games playing before 8AM and after 5PM on Mon-
+     days.
+
+           time            Monday  8       17
+
+     Any game listed after the keyword ``game'' will set parameters for a spe-
+     cific game.  Entries consist of five white-space separated fields: the
+     keyword ``game'', the name of a game, the highest system load average at
+     which the game may be played, the maximum users allowed if the game is to
+     be played, and the priority at which the game is to be run.  Any of these
+     fields may start with a non-numeric character, resulting in no game limi-
+     tation or priority based on that field.  The game "default" controls the
+     settings for any game not otherwise listed, and must be the last ``game''
+     entry in the file.  Priorities may not be negative.  For example, the
+     following entries limits the game ``hack'' to running only when the sys-
+     tem has 10 or less users and a load average of 5 or less; all other games
+     may be run any time the system has 15 or less users.
+
+           game            hack            5       10      *
+           game            default *       15      *
+
+FFIILLEESS
+     /etc/dm.conf  The dm(8) configuration file.
+
+SSEEEE AALLSSOO
+     setpriority(2),  ttyname(3),  dm(8)
+
+4.2 Berkeley Distribution        May 10, 1991                                2
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dm/dm.conf.5 b/dm/dm.conf.5
new file mode 100644
index 00000000..e856385d
--- /dev/null
+++ b/dm/dm.conf.5
@@ -0,0 +1,99 @@
+.\" Copyright (c) 1988, 1991 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.conf.5	5.8 (Berkeley) 5/10/91
+.\"
+.Dd May 10, 1991
+.Dt DM.CONF 5
+.Os BSD 4.2
+.Sh NAME
+.Nm dm.conf
+.Nd \&dm configuration file
+.Sh DESCRIPTION
+The
+.Xr dm.conf
+file
+is the configuration file for the
+.Xr \&dm 8
+program.
+It consists of lines beginning with one of three keywords, ``badtty'',
+``game'', and ``time''.  All other lines are ignored.
+.Pp
+Any tty listed after the keyword ``badtty'' may not have games played on
+it.
+Entries consist of two white-space separated fields: the string
+``badtty'' and the ttyname as returned by
+.Xr ttyname 3 .
+For example,
+to keep the uucp dialout, ``tty19'', from being used for games, the
+entry would be:
+.Bd -literal -offset indent
+badtty	/dev/tty19
+.Ed
+.Pp
+Any day/hour combination listed after the keyword ``time'' will disallow
+games during those hours.  Entries consist of four white-space separated
+fields: the string ``time'', the unabbreviated day of the week and the
+beginning and ending time of a period of the day when games may not be
+played.  The time fields are in a 0 based, 24-hour clock.  For example,
+the following entry allows games playing before 8AM and after 5PM on
+Mondays.
+.Bd -literal -offset indent
+time		Monday	8	17
+.Ed
+.Pp
+Any game listed after the keyword ``game'' will set parameters for a specific
+game.  Entries consist of five white-space separated fields: the keyword
+``game'', the name of a game, the highest system load average at which the
+game may be played, the maximum users allowed if the game is to be played,
+and the priority at which the game is to be run.  Any of these fields may
+start with a non-numeric character, resulting in no game limitation or
+priority based on that field.  The game "default" controls the settings for
+any game not otherwise listed, and must be the last ``game'' entry in the
+file.  Priorities may not be negative.  For example, the following entries
+limits the game ``hack'' to running only when the system has 10 or less
+users and a load average of 5 or less; all other games may be run any time
+the system has 15 or less users.
+.Bd -literal -offset indent
+game		hack		5	10	*
+game		default	*	15	*
+.Ed
+.Sh FILES
+.Bl -tag -width /etc/dm.conf -compact
+.It Pa /etc/dm.conf
+The
+.Xr \&dm 8
+configuration file.
+.El
+.Sh SEE ALSO
+.Xr setpriority 2 ,
+.Xr ttyname 3 ,
+.Xr dm 8
diff --git a/dm/pathnames.h b/dm/pathnames.h
new file mode 100644
index 00000000..44d36b13
--- /dev/null
+++ b/dm/pathnames.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 1989 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.
+ *
+ *	@(#)pathnames.h	5.3 (Berkeley) 6/26/90
+ */
+
+#define	_PATH_CONFIG	"/etc/dm.conf"
+#define	_PATH_HIDE	"/usr/games/hide/"
+#define	_PATH_LOG	"/var/log/games.log"
+#define	_PATH_NOGAMES	"/etc/nogames"