+++ /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 "${path}" ]
- then
- if file -L "${path}" | grep -q 'dynamically linked'
- then
- # ldd output can be of three forms:
- # 1. linux-vdso.so.1 => (0x00007fffe3fb4000)
- # This is a virtual, kernel shared library and we want to skip it
- # 2. libc.so.6 => /lib/libc.so.6 (0x00007f5e9dc0c000)
- # We want to cache the third word.
- # 3. /lib64/ld-linux-x86-64.so.2 (0x00007f5e9df8b000)
- # We want to cache the first word.
- ldd "${path}" | while read line
- do
- if echo "$line" | grep -qs ' => '
- then
- continue
- elif echo "$line" | grep -qs ' => '
- then
- lib=$(echo "${line}" | awk '{ print $3 }')
- else
- lib=$(echo "${line}" | awk '{ print $1 }')
- fi
- cache_path "${lib}"
- done
- 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 "${1}" in
- start|restart|reload|force-reload|status)
- [ "${VERBOSE}" != no ] && 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 / commitdiff