--- /dev/null
+#!/bin/sh
+
+### BEGIN INIT INFO
+# Provides: live-boot
+# Required-Start: $syslog bootmisc
+# Required-Stop:
+# Should-Start: $local_fs
+# Should-Stop: halt reboot
+# X-Stop-After: umountroot
+# Default-Start: S
+# Default-Stop: 0 6
+# Short-Description: live-boot init script
+# Description: Resyncs snapshots, evantually caches files in order to
+# let remove the media.
+### END INIT INFO
+
+# Authors: Tollef Fog Heen <tfheen@canonical.com>
+# Marco Amadori <marco.amadori@gmail.com>
+
+PATH=/usr/sbin:/usr/bin:/sbin:/bin
+NAME=live-boot
+SCRIPTNAME=/etc/init.d/${NAME}
+DO_SNAPSHOT=/sbin/live-snapshot
+SNAPSHOT_CONF="/etc/live/boot.d/snapshot.conf"
+
+# Exit if system was not booted by live-boot
+grep -qs boot=live /proc/cmdline || exit 0
+
+# Read snapshot configuration variables
+[ -r ${SNAPSHOT_CONF} ] && . ${SNAPSHOT_CONF}
+
+# Load the VERBOSE setting and other rcS variables
+[ -f /etc/default/rcS ] && . /etc/default/rcS
+
+# Define LSB log_* functions.
+# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
+. /lib/lsb/init-functions
+
+# Try to cache everything we're likely to need after ejecting. This
+# is fragile and simple-minded, but our options are limited.
+cache_path()
+{
+ path="${1}"
+
+ if [ -d "${path}" ]
+ then
+ find "${path}" -type f | xargs cat > /dev/null 2>&1
+ elif [ -f "${path}" ]
+ then
+ if [ -x "${path}" ]
+ then
+ if file -L "${path}" | grep -q 'dynamically linked'
+ then
+ for lib in $(ldd "${path}" | awk '{ print $3 }')
+ do
+ cache_path "${lib}"
+ done
+ fi
+ fi
+
+ cat "${path}" >/dev/null 2>&1
+ fi
+}
+
+get_boot_device()
+{
+ # search in /proc/mounts for the device that is mounted at /live/image
+ while read DEVICE MOUNT REST
+ do
+ if [ "${MOUNT}" = "/live/image" ]
+ then
+ echo "${DEVICE}"
+ exit 0
+ fi
+ done < /proc/mounts
+}
+
+device_is_USB_flash_drive()
+{
+ # remove leading "/dev/" and all trailing numbers from input
+ DEVICE=$(expr substr ${1} 6 3)
+
+ # check that device starts with "sd"
+ [ "$(expr substr ${DEVICE} 1 2)" != "sd" ] && return 1
+
+ # check that the device is an USB device
+ if readlink /sys/block/${DEVICE} | grep -q usb
+ then
+ return 0
+ fi
+
+ return 1
+}
+
+do_stop ()
+{
+ if ! grep -qs nopersistent /proc/cmdline && grep -qs persistent /proc/cmdline
+ then
+ # ROOTSNAP and HOMESNAP are defined in ${SNAPSHOT_CONF} file
+ if [ ! -z "${ROOTSNAP}" ]
+ then
+ ${DO_SNAPSHOT} --resync-string="${ROOTSNAP}"
+ fi
+
+ if [ ! -z "${HOMESNAP}" ]
+ then
+ ${DO_SNAPSHOT} --resync-string="${HOMESNAP}"
+ fi
+ fi
+
+ # check for netboot
+ if [ ! -z "${NETBOOT}" ] || grep -qs netboot /proc/cmdline || grep -qsi root=/dev/nfs /proc/cmdline || grep -qsi root=/dev/cifs /proc/cmdline
+ then
+ return 0
+ fi
+
+ # check for toram
+ if grep -qs toram /proc/cmdline
+ then
+ return 0
+ fi
+
+ # Don't prompt to eject the SD card on Babbage board, where we reuse it
+ # as a quasi-boot-floppy. Technically this uses a bit of ubiquity
+ # (archdetect), but since this is mostly only relevant for
+ # installations, who cares ...
+ if type archdetect >/dev/null 2>&1
+ then
+ subarch="$(archdetect)"
+
+ case $subarch in
+ arm*/imx51)
+ return 0
+ ;;
+ esac
+ fi
+
+ prompt=1
+ if [ "${NOPROMPT}" = "Yes" ]
+ then
+ prompt=
+ fi
+
+ for path in $(which halt) $(which reboot) /etc/rc?.d /etc/default $(which stty) /bin/plymouth
+ do
+ cache_path "${path}"
+ done
+
+ for x in $(cat /proc/cmdline)
+ do
+ case ${x} in
+ quickreboot)
+ QUICKREBOOT="Yes"
+ ;;
+ esac
+ done
+
+ mount -o remount,ro /live/cow
+
+ if [ -z ${QUICKREBOOT} ]
+ then
+
+ # Exit if the system was booted from an ISO image rather than a physical CD
+ grep -qs find_iso= /proc/cmdline && return 0
+ # TODO: i18n
+ BOOT_DEVICE="$(get_boot_device)"
+
+ if device_is_USB_flash_drive ${BOOT_DEVICE}
+ then
+ # do NOT eject USB flash drives!
+ # otherwise rebooting with most USB flash drives
+ # failes because they actually remember the
+ # "ejected" state even after reboot
+ MESSAGE="Please remove the USB flash drive"
+
+ if [ "${NOPROMPT}" = "usb" ]
+ then
+ prompt=
+ fi
+
+ else
+ # ejecting is a very good idea here
+ MESSAGE="Please remove the disc, close the tray (if any)"
+
+ if [ -x /usr/bin/eject ]
+ then
+ eject -p -m /live/image >/dev/null 2>&1
+ fi
+
+ if [ ${NOPROMPT} = "cd" ]
+ then
+ prompt=
+ fi
+
+ fi
+
+ [ "$prompt" ] || return 0
+
+ if [ -x /bin/plymouth ] && plymouth --ping
+ then
+ plymouth message --text="${MESSAGE} and press ENTER to continue:"
+ plymouth watch-keystroke > /dev/null
+ else
+ stty sane < /dev/console
+
+ printf "\n\n${MESSAGE} and press ENTER to continue:" > /dev/console
+
+ read x < /dev/console
+ fi
+ fi
+}
+
+case "${1}" in
+ restart|reload|force-reload|status)
+ [ "${VERBOSE}" != no ] && log_end_msg 0
+ ;;
+ start)
+ log_begin_msg "${NAME} is configuring sendsigs..."
+ if [ -f /live/root.pid ] ; then
+ cat /live/root.pid >> /var/run/sendsigs.omit
+ fi
+ log_end_msg 0
+ ;;
+
+ stop)
+ log_begin_msg "${NAME} is resyncing snapshots and caching reboot files..."
+ do_stop
+
+ case "${?}" in
+ 0|1)
+ [ "${VERBOSE}" != no ] && log_end_msg 0
+ ;;
+
+ 2)
+ [ "${VERBOSE}" != no ] && log_end_msg 1
+ ;;
+ esac
+ ;;
+
+ *)
+ log_success_msg "Usage: ${SCRIPTNAME} {start|stop|restart|force-reload}" >&2
+ exit 3
+ ;;
+esac
projects / live-boot-grml.git / blobdiff