Root/Documentation/s390/config3270.sh

1#!/bin/sh
2#
3# config3270 -- Autoconfigure /dev/3270/* and /etc/inittab
4#
5# Usage:
6# config3270
7#
8# Output:
9# /tmp/mkdev3270
10#
11# Operation:
12# 1. Run this script
13# 2. Run the script it produces: /tmp/mkdev3270
14# 3. Issue "telinit q" or reboot, as appropriate.
15#
16P=/proc/tty/driver/tty3270
17ROOT=
18D=$ROOT/dev
19SUBD=3270
20TTY=$SUBD/tty
21TUB=$SUBD/tub
22SCR=$ROOT/tmp/mkdev3270
23SCRTMP=$SCR.a
24GETTYLINE=:2345:respawn:/sbin/mingetty
25INITTAB=$ROOT/etc/inittab
26NINITTAB=$ROOT/etc/NEWinittab
27OINITTAB=$ROOT/etc/OLDinittab
28ADDNOTE=\\"# Additional mingettys for the 3270/tty* driver, tub3270 ---\\"
29
30if ! ls $P > /dev/null 2>&1; then
31    modprobe tub3270 > /dev/null 2>&1
32fi
33ls $P > /dev/null 2>&1 || exit 1
34
35# Initialize two files, one for /dev/3270 commands and one
36# to replace the /etc/inittab file (old one saved in OLDinittab)
37echo "#!/bin/sh" > $SCR || exit 1
38echo " " >> $SCR
39echo "# Script built by /sbin/config3270" >> $SCR
40if [ ! -d /dev/dasd ]; then
41    echo rm -rf "$D/$SUBD/*" >> $SCR
42fi
43echo "grep -v $TTY $INITTAB > $NINITTAB" > $SCRTMP || exit 1
44echo "echo $ADDNOTE >> $NINITTAB" >> $SCRTMP
45if [ ! -d /dev/dasd ]; then
46    echo mkdir -p $D/$SUBD >> $SCR
47fi
48
49# Now query the tub3270 driver for 3270 device information
50# and add appropriate mknod and mingetty lines to our files
51echo what=config > $P
52while read devno maj min;do
53    if [ $min = 0 ]; then
54        fsmaj=$maj
55        if [ ! -d /dev/dasd ]; then
56            echo mknod $D/$TUB c $fsmaj 0 >> $SCR
57            echo chmod 666 $D/$TUB >> $SCR
58        fi
59    elif [ $maj = CONSOLE ]; then
60        if [ ! -d /dev/dasd ]; then
61            echo mknod $D/$TUB$devno c $fsmaj $min >> $SCR
62        fi
63    else
64        if [ ! -d /dev/dasd ]; then
65            echo mknod $D/$TTY$devno c $maj $min >>$SCR
66            echo mknod $D/$TUB$devno c $fsmaj $min >> $SCR
67        fi
68        echo "echo t$min$GETTYLINE $TTY$devno >> $NINITTAB" >> $SCRTMP
69    fi
70done < $P
71
72echo mv $INITTAB $OINITTAB >> $SCRTMP || exit 1
73echo mv $NINITTAB $INITTAB >> $SCRTMP
74cat $SCRTMP >> $SCR
75rm $SCRTMP
76exit 0
77

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