| 1 | #!/bin/sh
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| 2 | #
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| 3 | # $Id: hack-fstab 2087 2008-12-14 14:50:37Z bruno $
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| 4 | #
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| 5 | # Recreate /etc/fstab from first mountlist analysis
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| 6 | # and then complement wirh old fstab content.
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| 7 |
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| 8 | LogIt() {
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| 9 | echo "$1" >> /dev/stderr
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| 10 | }
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| 11 |
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| 12 |
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| 13 | AddFancyParams() {
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| 14 | local incoming device mountpoint format size original_fstab_line label uuid
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| 15 |
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| 16 | incoming=`echo "$1" | tr -s '\t' ' '`
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| 17 | [ "$incoming" = "" ] && return
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| 18 | device=`echo "$incoming" | cut -d' ' -f1`
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| 19 | mountpoint=`echo "$incoming" | cut -d' ' -f2`
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| 20 | format=`echo "$incoming" | cut -d' ' -f3`
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| 21 | size=`echo "$incoming" | cut -d' ' -f4`
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| 22 | label=`echo "$incoming" | cut -d' ' -f5`
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| 23 | original_fstab_line=`grep " $mountpoint " $old_fstab | grep -v "#" | tr -s ' ' ' '`
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| 24 | if [ "$format" = "ext2" ] || [ "$format" = "ext3" ] || [ "$format" = "ext4" ]; then
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| 25 | if [ "`echo "$original_fstab_line" | grep "LABEL="`" != "" ] ; then
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| 26 | device="LABEL=$label"
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| 27 | fi
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| 28 | if [ "`echo "$original_fstab_line" | grep "UUID="`" != "" ] ; then
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| 29 | device="UUID=$label"
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| 30 | fi
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| 31 | fi
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| 32 |
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| 33 | echo -e -n "$device $mountpoint $format "
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| 34 |
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| 35 | if [ "$original_fstab_line" != "" ] ; then
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| 36 | echo "$original_fstab_line" | cut -d' ' -f4- | tr -s ' ' ' '
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| 37 | else
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| 38 | echo -e "defaults 0 0"
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| 39 | fi
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| 40 | }
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| 41 |
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| 42 |
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| 43 |
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| 44 | ProcessFstab() {
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| 45 | local incoming dev mountlist_entry blanklines new_i
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| 46 |
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| 47 | read incoming
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| 48 | blanklines=0
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| 49 | while [ "$blanklines" -lt "5" ] ; do
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| 50 | if [ "$incoming" = "" ] ; then
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| 51 | blanklines=$(($blanklines+1))
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| 52 | read incoming
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| 53 | continue
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| 54 | fi
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| 55 | incoming=`echo "$incoming" | tr -s '\t' ' '`
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| 56 | if [ "`echo "$incoming" | grep -vE "LABEL=|UUID="`" ] ; then
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| 57 | dev=`echo "$incoming" | cut -d' ' -f1`
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| 58 | mountlist_entry=`grep "$dev " $old_mountlist`
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| 59 | if [ "$mountlist_entry" = "" ] ; then
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| 60 | echo "$incoming"
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| 61 | fi
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| 62 | fi
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| 63 | read incoming
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| 64 | done
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| 65 | }
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| 66 |
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| 67 |
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| 68 | HackIncomingIfLABELused() {
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| 69 | local incoming col1 col2 col_rest orig out result
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| 70 |
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| 71 | # Keep LABEL or UUID if originally there in fstab
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| 72 | result=""
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| 73 | incoming=`echo "$1" | tr -s '\t' ' '`
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| 74 | col1=`echo "$incoming" | cut -d' ' -f1`
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| 75 | col2=`echo "$incoming" | cut -d' ' -f2`
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| 76 | col_rest=`echo "$incoming" | cut -d' ' -f3- | tr -s ' ' ' '`
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| 77 | orig="`grep " $col2 " $old_fstab | cut -d' ' -f1`"
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| 78 | if [ "`echo "$orig" | grep -E "LABEL=|UUID="`" != "" ] ; then
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| 79 | echo "orig = $orig" >> /dev/stderr
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| 80 | echo -e "$orig $col2 $col_rest" | tr -s ' ' ' '
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| 81 | fi
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| 82 | }
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| 83 |
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| 84 |
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| 85 | #HackIncomingIfLABELused "LABEL=/ / ext2 defaults 0,0,0"
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| 86 | #exit 0
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| 87 |
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| 88 |
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| 89 |
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| 90 | ProcessMountlist() {
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| 91 | local incoming outstr res spc
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| 92 |
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| 93 | read incoming
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| 94 | while [ "$incoming" != "" ] ; do
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| 95 | incoming=`echo "$incoming" | tr -s '\t' ' '`
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| 96 | res=`HackIncomingIfLABELused "$incoming"`
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| 97 | if [ ! "$res" ] ; then
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| 98 | outstr=`AddFancyParams "$incoming"`
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| 99 | else
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| 100 | outstr=`AddFancyParams "$res"`
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| 101 | fi
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| 102 | spc="`echo "$outstr" | tr -s '\t' ' '`"
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| 103 | if [ "$spc" != "" ] && [ "$spc" != " " ] && [ "`echo "$spc" | grep "raid raid"`" = "" ] ; then
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| 104 | echo "$spc"
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| 105 | fi
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| 106 | read incoming
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| 107 | done
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| 108 | }
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| 109 |
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| 110 | # ----------------- main ---------------
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| 111 |
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| 112 | LogIt "hack-fstab --- starting"
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| 113 |
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| 114 | if [ "$#" -ne "4" ] ; then
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| 115 | LogIt "hack-fstab <old mountlist> <old fstab> <new mountlist> <new fstab>" 1
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| 116 | LogIt "NB: the new fstab file is outgoing; all other files are incoming." 1
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| 117 | exit 1
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| 118 | fi
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| 119 |
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| 120 | LogIt "hack-fstab '$1' '$2' '$3' '$4'"
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| 121 |
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| 122 | old_mountlist=$1
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| 123 | old_fstab=$2
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| 124 | new_mountlist=$3
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| 125 | outfile=$4
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| 126 |
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| 127 | > $outfile
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| 128 | LogIt "Processing mountlist"
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| 129 | ProcessMountlist < $new_mountlist >> $outfile
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| 130 | LogIt "Processing fstab"
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| 131 | ProcessFstab < $old_fstab >> $outfile
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| 132 | if [ ! -e "$outfile.old" ] ; then
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| 133 | LogIt "Moving $outfile to $outfile.old" 1
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| 134 | mv $outfile $outfile.old
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| 135 | else
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| 136 | LogIt "$outfile.old exists already - assuming it _is_ the old one & using it" 1
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| 137 | fi
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| 138 | cat $outfile.old | tr -s ' ' ' ' \
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| 139 | | gawk '{printf "%-15s %-18s %-10s ",$1,$2,$3; for(i=4;i<=NF;i++) {printf "%s ",$i;};print "";};' \
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| 140 | | sort -u > $outfile
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| 141 |
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| 142 | LogIt "Finished writing to outfile ($outfile)"
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| 143 | LogIt "hack-fstab --- leaving"
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| 144 | exit 0
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