source: branches/2.2.9/mondo/src/restore-scripts/mondo/stabgrub-me @ 2449

Last change on this file since 2449 was 2449, checked in by Bruno Cornec, 11 years ago
  • Adds support for grub2 conf file grub.cfg in addition to menu.lst
  • Property svn:keywords set to Id
  • Property svn:unix-mode set to 755
File size: 5.6 KB
Line 
1#!/bin/sh
2#
3# $Id: stabgrub-me 2449 2009-10-05 23:10:35Z bruno $
4#
5#####################################################################
6
7
8QuitIfNotFound() {
9    if [ ! -f "$1" ] ; then
10        LogIt "(stabgrub-me) Where's $1? I cannot continue." 1
11        exit 1
12    fi
13}
14
15
16
17
18
19LocateOldFstab() {
20    old_fstab=""
21    if [ -f "/mnt/RESTORING/etc/fstab" ] ; then
22        LogIt "No need for fstab search." 2
23#        fstab_list=/mnt/RESTORING/etc/fstab
24        old_fstab=/mnt/RESTORING/etc/fstab
25        return 0
26    elif [ -f "/mnt/cdrom/archives/CUCKOO" ] ; then
27        LogIt "Because I'm cuckoo, I'll stop searching." 2
28        return 1
29    else
30        LogIt "Looking for fstab. Please wait." 2
31        fstab_list=`find /mnt/RESTORING -name fstab 2> /dev/null`
32    fi
33    where_they_live=""
34    for curr_fstab in $fstab_list ; do
35        curr_dir=`echo $curr_fstab | gawk '{i=index($0,"/fstab");print substr($0,0,i-1);}'`
36        resA=$?
37        curr_inetd=`find $curr_dir -name inetd.conf | grep -v "linuxconf"`
38        resB=$?
39        if [ "$resA" -eq "0" ] ; then
40            if [ "$where_they_live" != "" ] ; then
41                LogIt "Two directories found! One is $where_they_live, the other $curr_dir" 1
42                LogIt "I don't know which to choose. I'll abort the search." 1
43                return 1
44            fi
45            where_they_live=$curr_dir
46        fi
47    done
48    if [ "$where_they_live" = "" ] ; then
49        LogIt "Cannot find any folder which holds fstab _and_ inetd.conf" 1
50        return 1
51    fi
52    old_fstab=$where_they_live/fstab
53    LogIt "fstab found." 2
54    return 0
55}
56
57LocateOldGrub() {
58    old_grubconf=""
59    if [ -f "/mnt/RESTORING/boot/grub/menu.lst" ] || [ -f "/mnt/RESTORING/boot/grub/grub.cfg" ] ; then
60        LogIt "No need for menu.lst/grub.cfg search." 2
61        if [ -f "/mnt/RESTORING/boot/grub/menu.lst" ]; then
62            old_grubconf=/mnt/RESTORING/boot/grub/menu.lst
63        elif [ -f "/mnt/RESTORING/boot/grub/grub.cfg" ]; then
64            old_grubconf=/mnt/RESTORING/boot/grub/grub.cfg
65        fi
66        if [ -L "$old_grubconf" ] ; then
67            l=`readlink "$old_grubconf"`
68            if [ _"`echo $l | cut -c1`" = _"/" ]; then
69                # If readlink gives an absolute path it's related to the chroot
70                old_grubconf=/mnt/RESTORING/$l
71            else
72                # If readlink gives a relative path, it's in the same dir
73                old_grubconf=/mnt/RESTORING/boot/grub/$l
74            fi
75        fi 
76        return 0
77    fi
78    LogIt "GRUB not found." 2
79    return 1
80}
81
82
83BEFORE=stabgrub-me.PRE
84
85MakeBackups() {
86    local i
87    LogIt "Backing up original files before modifying them..." 2
88    for i in $old_grubconf $old_fstab ; do
89        LogIt "Backing up $i"
90        [ -e "$i" ] && [ ! -e "$i.$BEFORE" ] && cp -f $i $i.$BEFORE
91    done
92}
93
94
95RestoreBackups() {
96    LogIt "Restoring original versions of modified files..." 2
97    cp -f $old_grubconf /tmp/grub.conf.ugly
98    cp -f $old_fstab /tmp/fstab.ugly
99    for i in $old_grubconf $old_fstab ; do
100        LogIt "Restoring $i"
101        [ -f "$i.$BEFORE" ] && cp -f $i.$BEFORE $i
102    done
103}
104
105
106# --------------------------------- main -------------------------------
107
108if [ "$#" -ne "1" ] ; then
109    LogIt "stabgrub-me </dev/bootdrive>"
110    exit 1
111fi
112
113bootdrive=$1
114
115LogIt "stabgrub-me '$1' --- starting"
116LocateOldFstab
117LocateOldGrub
118old_mountlist=/tmp/mountlist.original
119new_mountlist=/tmp/mountlist.txt
120QuitIfNotFound $old_mountlist
121QuitIfNotFound $new_mountlist
122QuitIfNotFound $old_fstab
123QuitIfNotFound $old_grubconf
124LogIt "OK so far: I've found all the files I need." 2
125new_fstab=/mnt/RESTORING/etc/fstab.NEW
126if [ -f /mnt/RESTORING/boot/grub/menu.lst ]; then
127    new_grubconf=/mnt/RESTORING/boot/grub/menu.lst.NEW
128elif [ -f /mnt/RESTORING/boot/grub/grub.cfg ]; then
129    new_grubconf=/mnt/RESTORING/boot/grub/grub.cfg.NEW
130fi
131# change back to /tmp if /mnt/RESTORING/etc be problematic
132
133MakeBackups
134
135LogIt "old_mountlist = $old_mountlist"
136LogIt "new_mountlist = $new_mountlist"
137LogIt "old_fstab = $old_fstab"
138LogIt "new_fstab = $new_fstab"
139LogIt "where_they_live = $where_they_live"
140
141LogIt "Calling hack-fstab $old_mountlist $old_fstab $new_mountlist $new_fstab"
142
143outval=0
144hack-fstab $old_mountlist $old_fstab $new_mountlist $new_fstab
145res=$?
146if [ "$res" -ne "0" ] ; then
147    LogIt "Warning - hack-fstab failed"
148    outval=$(($outval+$res))
149else
150    LogIt "Back from hack-fstab OK" 1
151fi
152
153if [ "$outval" -ne "0" ] ; then
154    LogIt "Fstab and/or grub modifications failed" 3
155    RestoreBackups
156else
157    LogIt "Modifications succeeded." 2
158    LogIt "Copying $new_fstab over $old_fstab" 2
159    cp -f $new_fstab $old_fstab
160    cp -f $new_fstab /tmp/fstab
161    outval=$(($outval+$?))
162    LogIt "Copying over $old_grubconf" 2
163    if [ -f "$new_grubconf" ] ; then
164        cp -f $new_grubconf $old_grubconf
165        outval=$(($outval+$?))
166    fi
167    if [ "$outval" -ne "0" ] ; then
168        LogIt "Modifications (copying) failed. Restoring from backups." 3
169        RestoreBackups
170    else
171        LogIt "Fstab modified ok." 2
172    fi
173    cd /mnt/RESTORING
174#    cd $where_they_live
175#    cd ..
176    LogIt "Running grub..." 2
177    LogIt "grub-MR $bootdrive $new_mountlist"
178    grub-MR $bootdrive $new_mountlist >> $LOGFILE 2>> $LOGFILE
179    grub_res=$?
180    if [ "$grub_res" -ne "0" ] ; then
181        LogIt "grub-install failed. Running grub-MR..."
182        chroot /mnt/RESTORING grub-install '(hd0)' >> $LOGFILE 2>> $LOGFILE
183        grub_res=$?
184    fi
185    if [ "$grub_res" -ne "0" ] ; then
186    LogIt "GRUB failed." 3
187    else
188        LogIt "GRUB ran ok." 2
189    fi
190fi
191
192if [ "$outval" -ne "0" ] ; then
193    LogIt "Error(s) occurred during grub/fstab processing.              "
194    LogIt "Restoring originals.                                         "
195    RestoreBackups
196elif [ "$grub_res" -ne "0" ] ; then
197    LogIt "Fstab was modified OK but grub failed to run.                 "
198    outval=$(($outval+1))
199else
200    LogIt "/etc/fstab was modified ok. GRUB ran ok.                      "
201fi
202LogIt "stabgrub-me --- leaving"
203echo -en "\n\n\n"
204exit $outval
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