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 -f /n/dist/LICENSE)
  15                 exit
  16 }
  17
  18 fn havedist {
  19         test -f $1/LICENSE
  20 }
  21
  22 switch($1){
  23 case checkready
  24         if(! ~ $distisfrom local && ! ~ $download done){
  25                 mountdist=notdone
  26                 export mountdist
  27         }
  28         if(! ~ $#mountmedia 0 1){
  29                 if(domount){
  30                         mountdist=done
  31                         export mountdist
  32                         if(mountdist checkdone)
  33                                 exit
  34                 }
  35                 srvmedia=()
  36                 mountmedia=()
  37                 mountdist=ready
  38                 export srvmedia mountmedia mountdist
  39         }
  40
  41 case go
  42         fat=()
  43         ext2=()
  44         x9660=()
  45
  46         echo Please wait... Scanning storage devices...
  47
  48         parts=`{ls /dev/sd[A-Z][0-9]*/* >[2]/dev/null | grep -v '/(plan9.*|ctl|log|raw)$'}
  49         for (i in $parts) {
  50                 echo -n '       '^$i
  51                 n=`{echo $i | sed 's;/;_;g'}
  52                 if(! test -f /tmp/localpart.$n)
  53                         dd -if $i -bs 2048 -count 32 -of /tmp/localpart.$n >[2]/dev/null
  54                 if(isfat /tmp/localpart.$n)
  55                         fat=($fat $i)
  56                 if(isext2 /tmp/localpart.$n)
  57                         ext2=($ext2 $i)
  58                 if(is9660 /tmp/localpart.$n)
  59                         x9660=($x9660 $i)
  60                 echo
  61         }
  62         echo
  63         echo The following storage media were detected.
  64         echo Choose the one containing the distribution.
  65         echo
  66         for(i in $parts){
  67                 switch($i){
  68                 case $fat
  69                         echo    '       '^$i^' (microsoft fat)'
  70                 case $ext2
  71                         echo    '       '^$i^' (linux ext2)'
  72                 case $x9660
  73                         echo    '       '^$i^' (iso9660 cdrom)'
  74                 }
  75         }
  76         echo
  77
  78         mountstatus=x
  79         while(! ~ $mountstatus ''){
  80                 default=()
  81                 if(! ~ $#cdboot 0 && ! ~ $#x9660 0)
  82                         default=(-d $x9660(1))
  83                 prompt $default 'Distribution disk' $fat $x9660
  84                 disk=$rd
  85
  86                 srvmedia=()
  87                 mountmedia=()
  88                 switch($disk){
  89                 case $fs
  90                         mountmedia=(bind /n/newfs /n/distmedia)
  91                 case $fat
  92                         srvmedia=(dossrv)
  93                         mountmedia=(mount /srv/dos /n/distmedia $disk)
  94                 case $ext2
  95                         srvmedia=(ext2srv -r)
  96                         mountmedia=(mount /srv/ext2 /n/distmedia $disk)
  97                 case $x9660
  98                         srvmedia=(9660srv)
  99                         mountmedia=(mount /srv/9660 /n/distmedia $disk)
 100                 case *
 101                         echo Unknown disk type '(cannot happen)'
 102                         exit oops
 103                 }
 104                 export srvmedia mountmedia
 105                 domount
 106                 mountstatus=$status
 107         }
 108
 109         first=yes
 110         dir=/
 111         while(~ $first yes || ! havedist /n/distmedia/$dir){
 112                 if(~ $first yes){
 113                         echo
 114                         echo Which directory contains the distribution?
 115                         echo 'Any of the following will suffice (in order of preference):'
 116                         echo '  - the root directory of the cd image'
 117                         echo
 118                         first=no
 119                 }
 120
 121                 prompt -d $dir 'Location of archives'
 122                 dir=$rd
 123                 if(~ $#dir 0)
 124                         dir=/
 125                 if(! ~ $#dir 1)
 126                         dir=$"dir
 127                 if(! havedist /n/distmedia/$dir)
 128                         echo 'No distribution found in '^`{cleanname /$dir}
 129         }
 130
 131         distmediadir=$dir
 132         export distmediadir
 133
 134 case checkdone
 135         if(! ~ $#distmediadir 1){
 136                 mountdist=notdone
 137                 export mountdist
 138                 exit notdone
 139         }
 140         if(! havedist /n/distmedia/$distmediadir && ! havedist /n/newfs/dist){
 141                 mountdist=notdone
 142                 export mountdist
 143                 exit notdone
 144         }
 145
 146         exitifdone
 147
 148         if(havedist /n/distmedia/$distmediadir){
 149                 bind /n/distmedia/$distmediadir /n/dist
 150                 exitifdone
 151                 mountdist=notdone
 152                 export mountdist
 153                 exit notdone
 154         }
 155
 156         mountdist=notdone
 157         export mountdist
 158         exit notdone
 159 }