LXR linux/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