78 lines
2 KiB
Bash
78 lines
2 KiB
Bash
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#!/bin/sh
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# Toggle between tty1 and tty2, launching fbkeyboard when on tty2
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# THIS SCRIPT MUST BE RUN AS ROOT
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# usage:
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# togglevt.sh <state>
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# where <state> is an optional arg to require that a counter be incremented before the action
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# is performed. The default configuration will perform the switch when the power button has
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# been pressed 3 times whilst the volume down button is being held.
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# if no arguments are specified the switch will occur immediately.
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[ "$(whoami)" != root ] && echo "This must be run as root" && exit 1
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# shellcheck disable=SC1091
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test -f /etc/conf.d/ttyescape.conf && . /etc/conf.d/ttyescape.conf
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# default font, override this by setting it in /etc/conf.d/ttyescape.conf
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FONT="${FONT:-/usr/share/consolefonts/ter-128n.psf.gz}"
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# amount of times power must be pressed to trigger
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PRESSCOUNT="${PRESSCOUNT:-3}"
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TMPFILE="${TMPFILE:-/tmp/ttyescape.tmp}"
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if [ ! -e /dev/uinput ]; then
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if ! modprobe -q uinput; then
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echo "uinput module not available, please enable it in your kernel"
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fi
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fi
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switchtty() {
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currentvt=$(cat /sys/devices/virtual/tty/tty0/active)
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if [ "$currentvt" = "tty2" ]; then # switch to tty1 with normal UI
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chvt 1
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killall fbkeyboard
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else # Switch to tty2 with fbkeyboard
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setfont "$FONT" -C /dev/tty2
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chvt 2
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# sometimes fbkeyboard can be running already, we shouldn't start it in that case
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[ "$(pgrep fbkeyboard)" ] || nohup fbkeyboard -r "$(cat /sys/class/graphics/fbcon/rotate)" &
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fi
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}
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# If we receive a command that isn't start
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# and we don't have the file used to count
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# then we should do nothing
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if [ -n "$1" ] && [ "$1" != "start" ] && [ ! -f "$TMPFILE" ]; then
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exit 0
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fi
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case "$1" in
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# No args means just DO IT
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"")
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switchtty
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;;
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# Start counting, this should
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# run when voldown is pressed
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"start")
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echo "0" > "$TMPFILE"
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;;
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# Run when voldown releases
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"reset")
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rm "$TMPFILE"
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;;
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# Run when power pressed while
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# voldown is pressed
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"inc")
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val="$(cat "$TMPFILE")"
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val=$((val+1))
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if [ $val -eq "$PRESSCOUNT" ]; then
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rm "$TMPFILE"
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switchtty
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else
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echo "$val" > "$TMPFILE"
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fi
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;;
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*)
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esac
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