blob: b976c747c0499a6be780f9b7410f4933531650a8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
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 ${QUICKREBOOT} ]; then
# TODO: i18n
if [ -x /usr/bin/eject ]
then
BOOT_DEVICE="$(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
|
