1 files changed, 76 insertions, 0 deletions
diff --git a/Documentation/s390/config3270.sh b/Documentation/s390/config3270.sh
new file mode 100644
index 000000000000..515e2f431487
--- /dev/null
+++ b/Documentation/s390/config3270.sh
@@ -0,0 +1,76 @@
+#!/bin/sh
+#
+# config3270 -- Autoconfigure /dev/3270/* and /etc/inittab
+#
+#       Usage:
+#               config3270
+#
+#       Output:
+#               /tmp/mkdev3270
+#
+#       Operation:
+#               1. Run this script
+#               2. Run the script it produces: /tmp/mkdev3270
+#               3. Issue "telinit q" or reboot, as appropriate.
+#
+P=/proc/tty/driver/tty3270
+ROOT=
+D=$ROOT/dev
+SUBD=3270
+TTY=$SUBD/tty
+TUB=$SUBD/tub
+SCR=$ROOT/tmp/mkdev3270
+SCRTMP=$SCR.a
+GETTYLINE=:2345:respawn:/sbin/mingetty
+INITTAB=$ROOT/etc/inittab
+NINITTAB=$ROOT/etc/NEWinittab
+OINITTAB=$ROOT/etc/OLDinittab
+ADDNOTE=\\"# Additional mingettys for the 3270/tty* driver, tub3270 ---\\"
+
+if ! ls $P > /dev/null 2>&1; then
+	modprobe tub3270 > /dev/null 2>&1
+fi
+ls $P > /dev/null 2>&1 || exit 1
+
+# Initialize two files, one for /dev/3270 commands and one
+# to replace the /etc/inittab file (old one saved in OLDinittab)
+echo "#!/bin/sh" > $SCR || exit 1
+echo " " >> $SCR
+echo "# Script built by /sbin/config3270" >> $SCR
+if [ ! -d /dev/dasd ]; then
+	echo rm -rf "$D/$SUBD/*" >> $SCR
+fi
+echo "grep -v $TTY $INITTAB > $NINITTAB" > $SCRTMP || exit 1
+echo "echo $ADDNOTE >> $NINITTAB" >> $SCRTMP
+if [ ! -d /dev/dasd ]; then
+	echo mkdir -p $D/$SUBD >> $SCR
+fi
+
+# Now query the tub3270 driver for 3270 device information
+# and add appropriate mknod and mingetty lines to our files
+echo what=config > $P
+while read devno maj min;do
+	if [ $min = 0 ]; then
+		fsmaj=$maj
+		if [ ! -d /dev/dasd ]; then
+			echo mknod $D/$TUB c $fsmaj 0 >> $SCR
+			echo chmod 666 $D/$TUB >> $SCR
+		fi
+	elif [ $maj = CONSOLE ]; then
+		if [ ! -d /dev/dasd ]; then
+			echo mknod $D/$TUB$devno c $fsmaj $min >> $SCR
+		fi
+	else
+		if [ ! -d /dev/dasd ]; then
+			echo mknod $D/$TTY$devno c $maj $min >>$SCR
+			echo mknod $D/$TUB$devno c $fsmaj $min >> $SCR
+		fi
+		echo "echo t$min$GETTYLINE $TTY$devno >> $NINITTAB" >> $SCRTMP
+	fi
+done < $P
+
+echo mv $INITTAB $OINITTAB >> $SCRTMP || exit 1
+echo mv $NINITTAB $INITTAB >> $SCRTMP
+cat $SCRTMP >> $SCR
+rm $SCRTMP
+exit 0