Bug#605777: workaround for backspace key deletes forwards on the kFreeBSD console

[Petr Salinger <Petr.Salinger@seznam.cz>]

> > The integration should be into /etc/init.d/kbdcontrol,
> > by adding two targets, like keymap-native and keymap-debian.
> >
> > May be it can be run even semi-automatically, by
> > detecting whether the /etc/inittab uses cons25 or cons25-debian
> > and noop or alter keymap.
>
> Yes, I like the latter (auto detection) part. Another solution could be a
> debconf question in kbdcontrol (though it might be too late for this).

Attached is the proposed new /etc/init.d/kbdcontrol.
The current default is
FLAVOUR=auto

Should be the default "auto" or "native" ?

Is there still a time to do freebsd-utils upload ?
The only change against current one would be the new 
/etc/init.d/kbdcontrol script.

Cheers
	Petr

#! /bin/sh
### BEGIN INIT INFO
# Provides:             kbdcontrol
# Required-Start:       $local_fs $remote_fs
# Required-Stop:
# Default-Start:        S
# Default-Stop:
# Short-Description:    Set keymap
# Description:          Set the Console keymap
### END INIT INFO
#
# skeleton	example file to build /etc/init.d/ scripts.
#		This file should be used to construct scripts for /etc/init.d.
#
#		Written by Miquel van Smoorenburg <miquels@cistron.nl>.
#		Modified for Debian 
#		by Ian Murdock <imurdock@gnu.ai.mit.edu>.
#
# Version:	@(#)skeleton  1.9  26-Feb-2001  miquels@cistron.nl
#

set -e

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
which kbdcontrol >/dev/null

# in general, keymap layout can be
# native:  the plain FreeBSD/cons25 layout
# debian:  the Debian Policy 9.8 (Keyboard configuration) conforming, aka cons25-debian
# auto:    scan /etc/inittab and guess the right one
FLAVOUR=auto

# for auto do the guess
if [ $FLAVOUR = auto ]
then
  if grep -q -e "respawn:/sbin/getty.*cons25-debian" /etc/inittab
  then
    FLAVOUR=debian
  fi
fi


alter_to_debian_keymap () {
	# change keymap layout to Debian Policy 9.8 (Keyboard configuration) conforming

	# 014   del    del    bs     bs     del    del    bs     bs      O
	# 142   del    del    bs     bs     del    del    bs     bs      O

	# 103   fkey61 fkey61 fkey61 fkey61 fkey61 fkey61 boot   fkey61  O
	# 231   fkey61 fkey61 fkey61 fkey61 fkey61 fkey61 boot   fkey61  O

	# in following part change only first one, do not change the rest (decimal separator)

	# 083   fkey61 '.'    '.'    '.'    '.'    '.'    boot   boot    N
	# 211   fkey61 '.'    '.'    '.'    '.'    '.'    boot   boot    N

	echo -n "Altering to policy conforming cons25-debian layout..."
	TMPFILE=`mktemp -t keymap.XXXXXXXXXX` || exit 1

	kbdcontrol -d | sed \
	  -e "s/^  083   del   /  083   fkey61/" \
	  -e "s/^  211   del   /  211   fkey61/" \
	  -e "s/^  083   bs    /  083   fkey61/" \
	  -e "s/^  211   bs    /  211   fkey61/" \
	  -e "s/^  014   .*/  014   del    del    bs     bs     del    del    bs     bs      O/" \
	  -e "s/^  142   .*/  142   del    del    bs     bs     del    del    bs     bs      O/" \
	  -e "s/^  103   .*/  103   fkey61 fkey61 fkey61 fkey61 fkey61 fkey61 boot   fkey61  O/" \
	  -e "s/^  231   .*/  231   fkey61 fkey61 fkey61 fkey61 fkey61 fkey61 boot   fkey61  O/" \
	  > $TMPFILE

	kbdcontrol -l $TMPFILE  
	rm -f $TMPFILE
  
	# and generate  ESC [ 3 ~ for fkey61  
	SEQ=`/bin/echo -n -e \\\033[3~`
	#echo $SEQ | od -ax
	kbdcontrol -f 61 $SEQ
	echo "done."
}


alter_to_native_keymap () {
	# change keymap layout to usual cons25

	# 014   bs     bs     del    del    bs     bs     del    del     O
	# 142   bs     bs     del    del    bs     bs     del    del     O

	echo -n "Altering to native cons25 layout..."
	TMPFILE=`mktemp -t keymap.XXXXXXXXXX` || exit 1

	kbdcontrol -d | sed \
	  -e "s/^  014   .*/  014   bs     bs     del    del    bs     bs     del    del     O/" \
	  -e "s/^  142   .*/  142   bs     bs     del    del    bs     bs     del    del     O/" \
	  > $TMPFILE

	kbdcontrol -l $TMPFILE  
	rm -f $TMPFILE
  
	# and generate del for fkey61  
	SEQ=`/bin/echo -n -e \\\\177`
	#echo $SEQ | od -ax
	kbdcontrol -f 61 $SEQ
	echo "done."
}


do_start() {
	if test -e /etc/kbdcontrol.conf ; then
		echo -n "Loading console keymap..."
		kbdcontrol -l `grep -v ^# /etc/kbdcontrol.conf` < /dev/console
		echo "done."
	fi
}


case "$1" in
  start|"")
	do_start
	if [ $FLAVOUR = debian ]
	then
		alter_to_debian_keymap < /dev/console
	fi
	;;
  restart|reload|force-reload)
	echo "Error: argument '$1' not supported" >&2
	exit 3
	;;
  stop)
	# No-op
	;;
  keymap-native)
	alter_to_native_keymap < /dev/console
	;;
  keymap-debian)
	alter_to_debian_keymap < /dev/console
	;;
  *)
	echo "Usage: $0 [start|stop|keymap-native|keymap-debian]" >&2
	exit 3
	;;
esac

exit 0