132 lines
4.1 KiB
Bash
Executable File
132 lines
4.1 KiB
Bash
Executable File
#! /bin/sh
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# Author: Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com>
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# Tollef Fog Heen <tfheen@canonical.com>
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# Marco Amadori <marco.amadori@gmail.com>
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#
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PATH=/usr/sbin:/usr/bin:/sbin:/bin
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NAME=casper
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SCRIPTNAME=/etc/init.d/${NAME}
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DO_SNAPSHOT=/sbin/${NAME}-snapshot
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# Exit if system was not booted by casper
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[ -f /run/.casper-boot ] || exit 0
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# Exit if the system was booted from an ISO image rather than a physical CD
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grep -qs find_iso= /proc/cmdline && exit 0
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# Read configuration variable file if it is present
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[ -r /etc/$NAME.conf ] && . /etc/$NAME.conf
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# Try to cache everything we're likely to need after ejecting. This
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# is fragile and simple-minded, but our options are limited.
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cache_path() {
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path="$1"
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if [ -d "$path" ]; then
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for f in $(find "$path" -type f); do
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cache_path "$f"
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done
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elif [ -f "$path" ] && [ ! -L "$path" ]; then
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if [ -x "$path" ]; then
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if file -L "$path" | grep -q 'dynamically linked'; then
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for lib in $(ldd "$path" | awk '{ print $3 }'); do
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cache_path "$lib"
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done
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fi
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fi
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echo -n >> "$path"
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fi
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}
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do_stop ()
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{
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logger -t ${NAME} "resyncing snapshots and caching reboot files..."
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if [ ! -z "${ROOTSNAP}" ]; then
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$DO_SNAPSHOT --resync-string="${ROOTSNAP}"
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fi
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if [ ! -z "${HOMESNAP}" ]; then
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$DO_SNAPSHOT --resync-string="${HOMESNAP}"
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fi
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# check for netboot
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if [ ! -z "${NETBOOT}" ] || grep -qs netboot /proc/cmdline || grep -qsi root=/dev/nfs /proc/cmdline || grep -qsi root=/dev/cifs /proc/cmdline ; then
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return 0
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fi
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# Don't prompt to eject the SD card on Babbage board, where we reuse it
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# as a quasi-boot-floppy. Technically this uses a bit of ubiquity
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# (archdetect), but since this is mostly only relevant for
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# installations, who cares ...
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if type archdetect >/dev/null 2>&1; then
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subarch="$(archdetect)"
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case $subarch in
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arm*/imx51)
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return 0
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;;
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esac
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fi
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prompt=1
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if grep -qs noprompt /proc/cmdline || [ -e /run/casper-no-prompt ]; then
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prompt=
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fi
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for path in $(which halt) $(which reboot) /bin/chvt /etc/rc?.d /etc/default $(which stty) /bin/plymouth /lib/plymouth /lib/*/plymouth /lib/systemd /etc/systemd /lib/*/libnss_files* /etc/nsswitch.conf /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf /usr/share/fonts/truetype/ubuntu/Ubuntu-R.ttf /usr/share/fonts/truetype/ubuntu/UbuntuMono-R.ttf /etc/fonts/fonts.conf /etc/fonts/conf.d/60-latin.conf; do
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cache_path "$path"
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done
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device="$(grep " /cdrom " /proc/mounts | cut -d' ' -f1)" || device=
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# If /cdrom isn't mounted, don't try to eject it
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if [ -z "$device" ]; then
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return 0
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fi
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# If the device exists but can't be found in /sys/block, it's most likely a partition
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# so unmount it (lazy mode) and sync
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if [ -b "$device" ] && [ ! -f "/sys/block/$(basename $device)/removable" ]; then
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umount -l $device >/dev/null 2>&1
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sync
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# from now on operate on the partition's block device
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device=/dev/$(basename "$(readlink -f /sys/class/block/$(basename $device)/..)")
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fi
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# If we're still there, then we're probably a cdrom or other media
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# ship the eject if the kernel says the media isn't removable
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if [ "$(cat /sys/block/$(basename $device)/removable)" = "0" ]; then
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return 0
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fi
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# XXX - i18n
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MSG="Please remove the installation medium, then press ENTER: "
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MSG_FALLBACK="Please remove the installation medium, then reboot."
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if [ "$prompt" ]; then
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if [ -x /bin/plymouth ] && plymouth --ping; then
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chvt 63
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plymouth message --text="$MSG"
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clear > /dev/tty1
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echo $MSG_FALLBACK > /dev/tty1
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else
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stty sane < /dev/console
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echo $MSG > /dev/console
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fi
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fi
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eject -p -m $device >/dev/null 2>&1
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[ "$prompt" ] || return 0
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if [ -x /bin/plymouth ] && plymouth --ping; then
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plymouth watch-keystroke > /dev/null
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else
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read x < /dev/console
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fi
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}
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do_stop
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