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 >[2]/dev/null
  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                 mkdir -p /n/newfs/dist
  38                 echo -n 'bunzip2 < '^$1^' >/n/newfs/dist/9front.iso'
  39                 bunzip2 < $1 >/n/newfs/dist/_9front.iso &&
  40                 mv /n/newfs/dist/_9front.iso /n/newfs/dist/9front.iso
  41                 echo
  42                 trycdimage /n/newfs/dist/9front.iso
  43                 mountdist=notdone
  44                 export mountdist
  45                 exit notdone
  46         }
  47 }
  48
  49
  50 switch($1){
  51 case checkready
  52         if(! ~ $distisfrom local && ! ~ $download done){
  53                 mountdist=notdone
  54                 export mountdist
  55         }
  56         if(! ~ $#mountmedia 0 1){
  57                 if(domount){
  58                         mountdist=done
  59                         export mountdist
  60                         if(./mountdist checkdone)
  61                                 exit
  62                 }
  63                 srvmedia=()
  64                 mountmedia=()
  65                 mountdist=ready
  66                 export srvmedia mountmedia mountdist
  67         }
  68
  69 case go
  70         fat=()
  71         x9660=()
  72
  73         echo Please wait... Scanning storage devices...
  74
  75         parts=`{ls /dev/sd*/* /srv/sd*/*.iso >[2]/dev/null |
  76                 grep -v '/(plan9.*|nvram|ctl|log|raw)$'}
  77         for (i in $parts) {
  78                 echo -n '       '^$i
  79                 t=`{fstype $i}
  80                 switch($t){
  81                 case dos
  82                         fat=($fat $i)
  83                 case 9660
  84                         x9660=($x9660 $i)
  85                 }
  86                 echo
  87         }
  88         echo
  89         echo The following storage media were detected.
  90         echo Choose the one containing the distribution.
  91         echo
  92         for(i in $parts){
  93                 switch($i){
  94                 case $fat
  95                         echo    '       '^$i^' (microsoft fat)'
  96                 case $x9660
  97                         echo    '       '^$i^' (iso9660 cdrom)'
  98                 }
  99         }
 100         echo
 101
 102         mountstatus=x
 103         while(! ~ $mountstatus ''){
 104                 default=()
 105                 if(! ~ $#cdboot 0)
 106                         default=(-d /)
 107                 prompt $default 'Distribution disk' $fat $x9660 $fs /
 108                 disk=$rd
 109
 110                 srvmedia=()
 111                 mountmedia=()
 112                 switch($disk){
 113                 case /
 114                         mountmedia=(mount /srv/boot /n/distmedia)
 115                 case $fs
 116                         mountmedia=(bind /n/newfs /n/distmedia)
 117                 case $fat
 118                         srvmedia=(dossrv)
 119                         mountmedia=(mount /srv/dos /n/distmedia $disk)
 120                 case $x9660
 121                         srvmedia=(9660srv)
 122                         mountmedia=(mount /srv/9660 /n/distmedia $disk)
 123                 case *
 124                         echo Unknown disk type '(cannot happen)'
 125                         exit oops
 126                 }
 127                 export srvmedia mountmedia
 128                 domount
 129                 mountstatus=$status
 130         }
 131
 132         first=yes
 133         dir=/
 134         while(~ $first yes || ! havedist /n/distmedia/$dir){
 135                 if(~ $first yes){
 136                         echo
 137                         echo Which directory contains the distribution?
 138                         echo 'Any of the following will suffice (in order of preference):'
 139                         echo '  - the root directory of the cd image'
 140                         echo '  - the directory containing 9front.iso'
 141                         echo '  - the directory containing 9front.iso.bz2'
 142                         echo
 143                         first=no
 144                 }
 145
 146                 prompt -d $dir 'Location of archives'
 147                 dir=$rd
 148                 if(~ $#dir 0)
 149                         dir=/
 150                 if(! ~ $#dir 1)
 151                         dir=$"dir
 152                 if(! havedist /n/distmedia/$dir)
 153                         echo 'No distribution found in '^`{cleanname /$dir}
 154         }
 155
 156         distmediadir=$dir
 157         export distmediadir
 158
 159 case checkdone
 160         if(! ~ $#distmediadir 1){
 161                 mountdist=notdone
 162                 export mountdist
 163                 exit notdone
 164         }
 165         if(! havedist /n/distmedia/$distmediadir && ! havedist /n/newfs/dist){
 166                 mountdist=notdone
 167                 export mountdist
 168                 exit notdone
 169         }
 170
 171         exitifdone
 172
 173         if(test -d /n/distmedia/$distmediadir/dist/plan9front){
 174                 bind /n/distmedia/$distmediadir /n/dist
 175                 exitifdone
 176                 mountdist=notdone
 177                 export mountdist
 178                 exit notdone
 179         }
 180
 181         trycdimage /n/distmedia/$distmediadir/9front.iso
 182         trycdimage /n/newfs/dist/9front.iso
 183
 184         trycdimagebz2 /n/distmedia/$distmediadir/9front.iso.bz2
 185         trycdimagebz2 /n/newfs/dist/9front.iso.bz2
 186
 187         mountdist=notdone
 188         export mountdist
 189         exit notdone
 190 }