summaryrefslogtreecommitdiffstats
path: root/rescue/restore-image.sh
blob: 9336b50e6251eb5ae4a7e39e22d1be18bd882a28 (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
#!/bin/bash

setterm -powersave off
setterm -blank 0

if [ -r ./restore-image-lib.sh ]; then
	. ./restore-image-lib.sh
elif [ -r /usr/lib/restore-image-lib.sh ]; then
	. /usr/lib/restore-image-lib.sh
fi

export PATH="/sbin:/bin:/usr/sbin:/usr/bin"

images_dir="/tmp/media/images"
images="$images_dir/list"
image=""

function image_list()
{
	list=$(cat $images | awk -F',' \
		'{ print $1 " " $2 " " $4 }')

	echo $list
}

function image_file()
{
	country="$1"

	file=$(grep ^$country $images | awk -F',' '{ print $3 }')

	echo $file
}

function welcome()
{
	while true; do
		clear
		msg="\n       Welcome to $TITLE\n\
\nThe following images were found, select one:\n "
		opcao=$(dialog --backtitle "$BACKTITLE" --title "$TITLE" \
				--stdout --radiolist "$msg" 0 0 0 \
				$(image_list))

		if [ "$?" != "0" ]; then
			_yesno "\nInterrupt installation?\n "
			if [ "$?" = "0" ]; then
				_shutdown
			fi
		else
			if [ -z "$opcao" ]; then
				continue
			else
				image=$(image_file $opcao)
				break
			fi
		fi
	done

	# disable kernel messages in the console
	echo "1 4 1 7" > /proc/sys/kernel/printk
}

function install_warning()
{
	clear
	_yesno "\nWARNING: This process will erase all data in this machine, \
do you want to continue?\n "
	if [ "$?" != "0" ]; then
		_shutdown
	fi
}

function detect_root()
{
	        dev=$(sed '/\/tmp\/media/!d;s/[0-9] .*$//;s/^.*\///' /proc/mounts)
	        devices=$(grep "^ .*[^0-9]$" < /proc/partitions | grep -v ${dev} | awk '{ print $4,$3 }')

		devs_found=$(echo $devices | wc -w)
		if [ "$devs_found" -gt "2" ]; then
 			if [ ! -z ${dev} ]; then
 				opcao=$(dialog --backtitle "$BACKTITLE" --title "$TITLE" --stdout --menu 'Choose one of the detected devices to restore to (check the blocks size column first):' 8 50 0 $devices )
 				if [ "$?" != "0" ]; then
 					_yesno "\nInterrupt installation?\n "
 					if [ "$?" = "0" ]; then
 						_shutdown
 					fi
 				else
 					root=$opcao
 				fi
 
	 			echo "$root"
 			else
 	        	        _msgbox "\nError writing image: disk device not detected\n"
 			fi
		else
			root=$(echo $devices | cut -d ' ' -f 1)
			echo "$root"
		fi
}

function write_image()
{
	root=$(detect_root)
	bzcat $images_dir/$image | dd of=/dev/$root bs=4096 > /tmp/backup.out 2>&1 &

	sleep 3
	pid=$(ps ax | grep 'dd of' | grep -v grep | awk '{ print $1 }')
	total=1000

	while [ true ]; do
		ps | grep -q $pid
		if [ $? -eq 0 ]; then
			/bin/kill -SIGUSR1 $pid
			unit=$(tail -n 1 /tmp/backup.out | \
				cut -d'(' -f2 | cut -d')' -f1 |\
				awk '{ print $2 }')

			complete=$(tail -n 1 /tmp/backup.out | \
				cut -d'(' -f2 | cut -d')' -f1 | \
				awk '{ print $1 }' | cut -d'.' -f1)
			if [ x"$unit" = x"GB" ]; then
				complete=$((complete*1000))
			fi
			echo $((complete*100/total))
			sleep 1
		else
			break
		fi
	done | dialog --backtitle "$BACKTITLE" --title "$TITLE" --gauge "\nWriting image..." 8 45

	in=$(tail -n 3 /tmp/backup.out | grep 'in$' | cut -d' ' -f1)
	out=$(tail -n 3 /tmp/backup.out | grep 'out$' | cut -d' ' -f1)

	if [ x"$in" != x"$out" ]; then
		_msgbox "\nError writing image!\n"
		sleep 24h
	fi
}

function expand_fs()
{
	filesystem_type=$(dumpe2fs -h /dev/${root}1 2>/dev/null| grep "Filesystem OS type" | awk '{ print $4 }')
	if [ $filesystem_type = "Linux" ]; then
                dialog --backtitle "$BACKTITLE" --title "$TITLE" --infobox "Installing...  Finishing Install..." 3 40
		sfdisk -d /dev/$root | sed -e "/${root}1/  s/size=.*,/size= ,/" | sfdisk -f /dev/$root
		e2fsck -fy /dev/${root}1
		resize2fs /dev/${root}1
	fi
}

# installation steps
welcome
install_warning
write_image
expand_fs

# all done!
_msgbox "\nInstallation process finished.\nPress ENTER to shutdown.\n "

_shutdown