rc/bin/inst/mountdist

   1 #!/bin/rc
   2
   3 # prereq: mountfs configdist
   4 # desc: locate and mount the distribution
   5
   6 fn domount{
   7         if(! test -e $mountmedia(2))
   8                 logprog $srvmedia
   9         unmount /n/distmedia >[2]/dev/null
  10         logprog $mountmedia
  11 }
  12
  13 fn exitifdone{
  14         if(test -d /n/dist/dist/plan9front)
  15                 exit
  16 }
  17
  18 fn havedist {
  19         test -d $1/dist/plan9front || test -f $1/9front.iso || test -f $1/9front.iso.bz2
  20 }
  21
  22 fn trycdimage{
  23         if(test -f $1){
  24                 rm -f /srv/9660.dist
  25                 unmount /n/dist
  26                 9660srv 9660.dist >[2]/dev/null
  27                 logprog mount /srv/9660.dist /n/dist $1
  28                 exitifdone
  29                 mountdist=notdone
  30                 export mountdist
  31                 exit notdone
  32         }
  33 }
  34
  35 fn trycdimagebz2 {
  36         if(test -f $1){
  37                 echo -n 'bunzip2 < '^$1^' >/n/newfs/dist/9front.iso'
  38                 bunzip2 < $1 >/n/newfs/dist/_9front.iso &&
  39                 mv /n/newfs/dist/_9front.iso /n/newfs/dist/9front.iso
  40                 echo
  41                 trycdimage /n/newfs/dist/9front.iso
  42                 mountdist=notdone
  43                 export mountdist
  44                 exit notdone
  45         }
  46 }
  47
  48
  49 switch($1){
  50 case checkready
  51         if(! ~ $distisfrom local && ! ~ $download done){
  52                 mountdist=notdone
  53                 export mountdist
  54         }
  55         if(! ~ $#mountmedia 0 1){
  56                 if(domount){
  57                         mountdist=done
  58                         export mountdist
  59                         if(mountdist checkdone)
  60                                 exit
  61                 }
  62                 srvmedia=()
  63                 mountmedia=()
  64                 mountdist=ready
  65                 export srvmedia mountmedia mountdist
  66         }
  67
  68 case go
  69         fat=()
  70         x9660=()
  71
  72         echo Please wait... Scanning storage devices...
  73
  74         parts=`{ls /dev/sd*/* /srv/sd*/*.iso >[2]/dev/null |
  75                 grep -v '/(plan9.*|nvram|ctl|log|raw)$'}
  76         for (i in $parts) {
  77                 echo -n '       '^$i
  78                 t=`{fstype $i}
  79                 switch($t){
  80                 case dos
  81                         fat=($fat $i)
  82                 case 9660
  83                         x9660=($x9660 $i)
  84                 }
  85                 echo
  86         }
  87         echo
  88         echo The following storage media were detected.
  89         echo Choose the one containing the distribution.
  90         echo
  91         for(i in $parts){
  92                 switch($i){
  93                 case $fat
  94                         echo    '       '^$i^' (microsoft fat)'
  95                 case $x9660
  96                         echo    '       '^$i^' (iso9660 cdrom)'
  97                 }
  98         }
  99         echo
 100
 101         mountstatus=x
 102         while(! ~ $mountstatus ''){
 103                 default=()
 104                 if(! ~ $#cdboot 0)
 105                         default=(-d /)
 106                 prompt $default 'Distribution disk' $fat $x9660 $fs /
 107                 disk=$rd
 108
 109                 srvmedia=()
 110                 mountmedia=()
 111                 switch($disk){
 112                 case /
 113                         mountmedia=(mount /srv/boot /n/distmedia)
 114                 case $fs
 115                         mountmedia=(bind /n/newfs /n/distmedia)
 116                 case $fat
 117                         srvmedia=(dossrv)
 118                         mountmedia=(mount /srv/dos /n/distmedia $disk)
 119                 case $x9660
 120                         srvmedia=(9660srv)
 121                         mountmedia=(mount /srv/9660 /n/distmedia $disk)
 122                 case *
 123                         echo Unknown disk type '(cannot happen)'
 124                         exit oops
 125                 }
 126                 export srvmedia mountmedia
 127                 domount
 128                 mountstatus=$status
 129         }
 130
 131         first=yes
 132         dir=/
 133         while(~ $first yes || ! havedist /n/distmedia/$dir){
 134                 if(~ $first yes){
 135                         echo
 136                         echo Which directory contains the distribution?
 137                         echo 'Any of the following will suffice (in order of preference):'
 138                         echo '  - the root directory of the cd image'
 139                         echo '  - the directory containing 9front.iso'
 140                         echo '  - the directory containing 9front.iso.bz2'
 141                         echo
 142                         first=no
 143                 }
 144
 145                 prompt -d $dir 'Location of archives'
 146                 dir=$rd
 147                 if(~ $#dir 0)
 148                         dir=/
 149                 if(! ~ $#dir 1)
 150                         dir=$"dir
 151                 if(! havedist /n/distmedia/$dir)
 152                         echo 'No distribution found in '^`{cleanname /$dir}
 153         }
 154
 155         distmediadir=$dir
 156         export distmediadir
 157
 158 case checkdone
 159         if(! ~ $#distmediadir 1){
 160                 mountdist=notdone
 161                 export mountdist
 162                 exit notdone
 163         }
 164         if(! havedist /n/distmedia/$distmediadir && ! havedist /n/newfs/dist){
 165                 mountdist=notdone
 166                 export mountdist
 167                 exit notdone
 168         }
 169
 170         exitifdone
 171
 172         if(test -d /n/distmedia/$distmediadir/dist/plan9front){
 173                 bind /n/distmedia/$distmediadir /n/dist
 174                 exitifdone
 175                 mountdist=notdone
 176                 export mountdist
 177                 exit notdone
 178         }
 179
 180         trycdimage /n/distmedia/$distmediadir/9front.iso
 181         trycdimage /n/newfs/dist/9front.iso
 182
 183         trycdimagebz2 /n/distmedia/$distmediadir/9front.iso.bz2
 184         trycdimagebz2 /n/newfs/dist/9front.iso.bz2
 185
 186         mountdist=notdone
 187         export mountdist
 188         exit notdone
 189 }