diff options
Diffstat (limited to 'packages/altboot/files/init.altboot')
| -rw-r--r-- | packages/altboot/files/init.altboot | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/packages/altboot/files/init.altboot b/packages/altboot/files/init.altboot new file mode 100644 index 0000000000..28ae7b7042 --- /dev/null +++ b/packages/altboot/files/init.altboot @@ -0,0 +1,324 @@ +#!/bin/sh +# +# altboot provides a simple bootmenu before init is beeing run. +# There are two default menu entries: "Normal boot" and "Single user mode" +# New menu entries can be created be putting files into /etc/altboot-menu. +# + +test -e /etc/altboot.func && . /etc/altboot.func || die "ERROR: /etc/altboot.func not found. Check your installation!" + +CURRENT_ENV="`set`" +VERSION="0.0.2" + +# Set some defaults in case hutils.conf is missing +REAL_INIT="/sbin/init.sysvinit" + +# Read default runlevel from inittab +INIT_RUNLEVEL="`cat /etc/inittab | sed -n "/^id\:/s/id\:\([0-9]\)\:.*$/\1/p"`" +test -z "$INIT_RUNLEVEL" && INIT_RUNLEVEL=5 + +test -e /etc/altboot.cfg && . /etc/altboot.cfg || echo "No altboot.cfg" > /dev/tty1 +test -e /etc/hutils.conf && . /etc/hutils.conf || echo "No hutils.conf" > /dev/tty1 + +C_RED="\033[31m" +C_BLUE="\033[34m" +C_WHITE="\033[37m" +C_RESET="\033[0m" + +die() { + echo "ERROR: $1" >/dev/tty0 + exec $SH_SHELL </dev/tty0 >/dev/tty0 2>&1 +} + + +# This function prints the boot-menu +# $1: Directory containing the scripts for the menu-items +show_menu() { + test -z "$1" && die "DEBUG: Parameter 1 is empty in show_menu" + echo "" + echo -e "altboot v$VERSION\n" + + cnt=0 + m_entry="" + if test -d $1 + then + # Build "m_entry" for scripts in /etc/altboot-menu + cd $1 + for file in `ls -1` + do + if ! test -d "$1/$file" + then + M_TITLE="`$1/$file title`" + if ! test -z "$M_TITLE" + then + let cnt=$cnt+1 + # Keep a list of existing "modules" together with an index number + # This sure is ugly, but Busybox sh doesn't do arrays.... + m_entry="`echo -e "$m_entry\n$cnt:$file\n"`" + echo -e "\t\t[$cnt] $M_TITLE" + fi + M_TITLE="" + fi + done + + # Display directories below /etc/altboot-menu as menu-item + # and add all scripts inside the directory to m_entry + for dir in `ls -1` + do + if test -d "$1/$dir" + then + M_TITLE="`basename "$1/$dir"`" + if ! test -z "$M_TITLE" + then + let cnt=$cnt+1 + # Keep a list of existing "modules" together with an index number + # This sure is ugly, but Busybox sh doesn't do arrays.... + m_entry="`echo -e "$m_entry\n$cnt:$dir:DIR\n"`" + echo -e "\t\t[$cnt] $M_TITLE" + + OLD_PWD="$PWD" + cd "$1/$dir" + for file in `ls -1` + do + if ! test -d "$1/$dir/$file" + then + M_TITLE="`$1/$dir/$file title`" + if ! test -z "$M_TITLE" + then + let cnt=$cnt+1 + # Keep a list of existing "modules" together with an index number + # This sure is ugly, but Busybox sh doesn't do arrays.... + m_entry="`echo -e "$m_entry\n$cnt:$dir/$file\n"`" + #echo -e "\t\t[$cnt] $M_TITLE" + fi + M_TITLE="" + fi + done + cd "$OLD_PWD" + + fi + M_TITLE="" + fi + done + + + echo "" + else + echo "WARNING: $1 not found" + fi + +} + +# This function is used to display the content of directories below +# /etc/altboot-menu as menu-items +show_sub_menu() { + dirname="`basename "$1"`" + + d_entries="`echo "$m_entry"|grep "$dirname/"`" + +# echo "[$d_entries]" + + echo -e "\naltboot v$VERSION: $dirname menu\n" + + + for d_entry in $d_entries + do + d_entry_number="`echo "$d_entry"| sed -n "s/\(.*\)\:\(.*\)/\1/p"`" + d_entry_file="`echo "$d_entry"| sed -n "s/\(.*\)\:\(.*\)/\2/p"`" + d_entry_title="`$d_entry_file title`" + +# echo "number: [$d_entry_number]" +# echo "file: [$d_entry_file]" +# echo "title: [$d_entry_title]" + + echo -e "\t\t[$d_entry_number] $d_entry_title" + done + + echo "" + +} + +# Shows the timer and sets $launch_altboot to yes if a keypress was detected +run_timer() { + if test "$TIMEOUT" != 0 + then + test -x /opt/QtPalmtop/bin/zgreeter.sh && /opt/QtPalmtop/bin/zgreeter.sh + + mount -t proc proc /proc >/dev/null 2>&1 + key_ints="`cat /proc/interrupts | grep keyboard | awk '{print $2}'`" + + echo -en "\n\nPlease press any key to launch altboot." > /dev/tty1 + + test -z "$TIMEOUT" && TIMEOUT="3" + + cnt=0 + while test "$cnt" != "$TIMEOUT" + do + sleep 1 + if test "`cat /proc/interrupts | grep keyboard | awk '{print $2}'`" != "$key_ints" + then + launch_altboot=yes + break + fi + echo -n "." >/dev/tty1 + let cnt=$cnt+1 + done + #umount /proc + else + launch_altboot=yes + fi +} + +# This function launches the selected menu item / script +# $1: Directory containing the scripts for the menu-items +launch_selection() { + test -z "$1" && die "Parameter 1 of launch_selection is empty!" + + case "$junk" in + *) file="`echo "$m_entry"| sed -n "/$junk\:/s/^.*\:\(.*\)/\1/p"`" + + # The selected menu-item points to a directory + if test "$file" = DIR + then + dir="`echo "$m_entry"| sed -n "/$junk\:/s/^.*\:\(.*\)\:\(.*\)/\1/p"`" + show_sub_menu /etc/altboot-menu/$dir >/dev/tty0 + wait_for_input >/dev/tty0 + launch_selection /etc/altboot-menu >/dev/tty0 + fi + + if test "$file" = MAIN + then + show_sub_menu /etc/altboot-menu >/dev/tty0 + wait_for_input >/dev/tty0 + launch_selection /etc/altboot-menu >/dev/tty0 + fi + + #echo "[$file]" + + . $1/$file run "$file" >/dev/tty0 + echo "WARNING: Using failsafe shell" >/dev/tty0 + exec $SH_SHELL </dev/tty0 >/dev/tty0 2>&1 + + ;; + esac +} + + +wait_for_input() { + while true + do + echo -n "Please choose one of the above [$last_selection]: " </dev/tty0 > /dev/tty0 2>&1 + read junk < /dev/tty0 2>&1 + + # This is required to work around an annoying busybox bug. + # Every key you press while this script runs will be + # picked up by the next "read $junk". And there's no goddamn way + # to prevent it. So the next read would pick up the "any" key the user pressed + # above to launch the altboot menu. + junk="`echo "$junk" | sed -n "s/.*\([0-9]\)/\1/p"`" + + + if test "$junk" -lt "$cnt" -o "$junk" -eq "$cnt" + then + if test ! -z "$junk" + then + # Don't remount rw if the drive is already mounted rw + # Only helpful for testing / debugging + if test "`mount|sed -n "/\/dev\/root/s/.*(\(.*\))/\1/p"`" != "rw" + then + + mount -o remount,rw / >/dev/null 2>&1 + echo "$junk" > /etc/altboot.conf + mount -o remount,ro / >/dev/null 2>&1 + else + echo "$junk" > /etc/altboot.conf + fi + else + junk="$last_selection" + break + fi + break + fi + done +} + +# * * * * * * This is the main function * * * * * * + +if ! test -z "$*" +then + echo "altboot: Using real init [$REAL_INIT] [$*] *" >/dev/tty1 + exec $REAL_INIT $* + exit 0 +else + + # Execute scripts in /etc/altboot.rc before doing anything else. + # Required for special situations, like booting spitz + for file in `ls -1 /etc/altboot.rc/*.sh` + do + . $file >/dev/tty1 2>&1 || echo "/etc/altboot.rc/$file failed!" + done + + if test "$ENABLE_ALTBOOT" != "yes" + then + echo "altboot: Using real init [$REAL_INIT] **" >/dev/tty1 + exec $REAL_INIT $INIT_RUNLEVEL + exit 0 + fi + + # Make sure altboots master password is set + set_password >/dev/tty0 + + test "$ASK_PW_ON_BOOT" = "yes" && verify_master_pw >/dev/tty0 + + # This timeout works by reading /proc/interrupts to see if the keyboard interrupt + # increases while the timer is running. A TIMEOUT of 0 will always launch altboot. + run_timer >/dev/tty1 2>&1 + + echo "" >/dev/tty0 + + + if test "$launch_altboot" != yes + then + # last_selection is the previously selected menu item by the user + last_selection="`cat /etc/altboot.conf`" >/dev/null 2>&1 + test -z "$last_selection" && last_selection="1" + + echo "Booting last selection: [$last_selection]" >/dev/tty0 + + # Set up the wanna-be array of available menu entries and their numbers + show_menu /etc/altboot-menu >/dev/null + junk="$last_selection" + launch_selection /etc/altboot-menu >/dev/tty0 + + fi + # Anything after this point will never be reached if $launch_altboot != yes + + # Show the altboot menu + show_menu /etc/altboot-menu >/dev/tty0 + + # Load last selection for use as default if <ENTER> is pressed at the prompt + last_selection="`cat /etc/altboot.conf`" >/dev/null 2>&1 + test -z "$last_selection" && last_selection="1" + + # Ask the user which menu-item to use + wait_for_input >/dev/tty0 + + # This should _never_ happen. + if test -z "$junk" + then + echo "WARNING: Trying failsafe mode" >/dev/tty0 + mount -o remount,rw / >/dev/tty0 2>&1 + echo "Dumping environment to /altboot.env" + echo "$CURRENT_ENV" > /altboot.env + mount -o remount,ro / >/dev/tty0 2>&1 + junk=1 + fi + + launch_selection /etc/altboot-menu >/dev/tty0 + + # Uhoh, something went terribly wrong if we reach this point! + die "WARNING: Failsafe fall-through activated. Spawning emergency shell" + +fi + + |