summaryrefslogtreecommitdiff
path: root/debian/live-initramfs.init
diff options
context:
space:
mode:
authorDaniel Baumann <daniel@debian.org>2009-02-08 00:18:21 +0100
committerDaniel Baumann <daniel@debian.org>2011-03-09 17:48:04 +0100
commitc8d307dda6fb07a63dfe69381fc5176ad925862a (patch)
tree9139bf5d5861bbb72a9c339439f39b88dca32adf /debian/live-initramfs.init
parent225b4d5b57ac7a69aa47b408f5d3f69ec53242da (diff)
downloadlive-boot-c8d307dda6fb07a63dfe69381fc5176ad925862a.tar.gz
live-boot-c8d307dda6fb07a63dfe69381fc5176ad925862a.zip
Prefixing debhelper files with package name.
Diffstat (limited to 'debian/live-initramfs.init')
-rw-r--r--debian/live-initramfs.init165
1 files changed, 165 insertions, 0 deletions
diff --git a/debian/live-initramfs.init b/debian/live-initramfs.init
new file mode 100644
index 0000000..1dd72cc
--- /dev/null
+++ b/debian/live-initramfs.init
@@ -0,0 +1,165 @@
+#!/bin/sh
+
+### BEGIN INIT INFO
+# Provides: live-initramfs
+# Required-Start: $syslog
+# Required-Stop: $syslog
+# Should-Start: $local_fs
+# Should-Stop: $local_fs
+# Default-Start: 1 2 3 4 5
+# Default-Stop: 0 6
+# Short-Description: live-initramfs init script
+# Description: Resyncs snapshots, evantually caches files in order to
+# let remove the media.
+### END INIT INFO
+
+# Authors: Tollef Fog Heen <tfheen@canonical.com>
+# Marco Amadori <marco.amadori@gmail.com>
+
+PATH=/usr/sbin:/usr/bin:/sbin:/bin
+NAME=live-initramfs
+SCRIPTNAME=/etc/init.d/${NAME}
+DO_SNAPSHOT=/sbin/live-snapshot
+
+# Exit if system was not booted by live-initramfs
+grep -qs boot=live /proc/cmdline || exit 0
+
+# Exit if the system was booted from an ISO image rather than a physical CD
+grep -qs find_iso= /proc/cmdline && exit 0
+
+# Read configuration variable file if it is present
+[ -r /etc/live.conf ] && . /etc/live.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 "${path}" ]; then
+ if file "${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}/device | grep -q usb ; then
+ return 0
+ fi
+ return 1
+}
+
+do_stop ()
+{
+ if [ ! -z "${ROOTSNAP}" ]; then
+ ${DO_SNAPSHOT} --resync-string="${ROOTSNAP}"
+ fi
+
+ if [ ! -z "${HOMESNAP}" ]; then
+ ${DO_SNAPSHOT} --resync-string="${HOMESNAP}"
+ 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
+
+ prompt=1
+ if grep -qs noprompt /proc/cmdline; then
+ prompt=
+ fi
+
+ for path in $(which halt) $(which reboot) /etc/rc?.d /etc/default $(which stty); do
+ cache_path "${path}"
+ done
+
+ for x in $(cat /proc/cmdline); do
+ case ${x} in
+ quickreboot)
+ QUICKREBOOT="Yes"
+ ;;
+ esac
+ done
+
+ if [ -z ${QUICKREBOOT} ]; then
+ # TODO: i18n, dialog
+ if [ -x /usr/bin/eject ]
+ then
+ BOOT_DEVICE="$(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"
+ else
+ # ejecting is a very good idea here
+ eject -p -m /live/image >/dev/null 2>&1
+ # TODO: detect CD
+ MEDIUM="DVD"
+ MESSAGE="Please remove the ${MEDIUM}, close the ${MEDIUM} tray (if any)"
+ fi
+ MESSAGE="${MESSAGE} and press ENTER:"
+
+ [ "$prompt" ] || return 0
+ fi
+
+ stty sane < /dev/console
+
+ echo -n -e "\n\n${MESSAGE}" > /dev/console
+ if [ -x /sbin/usplash_write ]; then
+ /sbin/usplash_write "TIMEOUT 86400"
+ /sbin/usplash_write "TEXT-URGENT Please remove the disc, close the tray (if any)"
+ /sbin/usplash_write "TEXT-URGENT and press ENTER to continue"
+ fi
+
+ read x < /dev/console
+ 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