From c8d307dda6fb07a63dfe69381fc5176ad925862a Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel@debian.org>
Date: Sun, 8 Feb 2009 00:18:21 +0100
Subject: Prefixing debhelper files with package name.

---
 debian/live-initramfs.init | 165 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 debian/live-initramfs.init

(limited to 'debian/live-initramfs.init')

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
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