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#!/bin/rc
# prereq: mountfs configdist
# desc: locate and mount the distribution
fn domount{
if(! test -e $mountmedia(2))
logprog $srvmedia
unmount /n/distmedia >[2]/dev/null
logprog $mountmedia
}
fn exitifdone{
if(test -f /n/dist/dist/replica/plan9.db)
exit
}
fn trycdimage{
if(test -f $1){
rm -f /srv/9660.dist
unmount /n/dist
9660srv 9660.dist >[2]/dev/null
logprog mount /srv/9660.dist /n/dist $1
exitifdone
mountdist=notdone
export mountdist
exit notdone
}
}
fn trycdimagebz2 {
if(test -f $1){
echo -n 'bunzip2 < '^$1^' >/n/newfs/dist/plan9.iso'
bunzip2 < $1 >/n/newfs/dist/_plan9.iso &&
mv /n/newfs/dist/_plan9.iso /n/newfs/dist/plan9.iso
echo
trycdimage /n/newfs/dist/plan9.iso
mountdist=notdone
export mountdist
exit notdone
}
}
fn havedist {
test -f $1/dist/replica/plan9.db ||
test -f $1/plan9.iso ||
test -f $1/plan9.iso.bz2
}
switch($1){
case checkready
if(! ~ $distisfrom local && ! ~ $download done){
mountdist=notdone
export mountdist
}
if(! ~ $#mountmedia 0 1){
if(domount){
mountdist=done
export mountdist
if(mountdist checkdone)
exit
}
srvmedia=()
mountmedia=()
mountdist=ready
export srvmedia mountmedia mountdist
}
case go
fat=()
ext2=()
x9660=()
fossil=()
echo Please wait... Scanning storage devices...
parts=`{ls /dev/sd??/* >[2]/dev/null | grep -v '/(plan9.*|ctl|log|raw)$'}
for (i in $parts) {
echo -n ' '^$i
n=`{echo $i | sed 's;/;_;g'}
if(! test -f /tmp/localpart.$n)
dd -if $i -bs 2048 -count 32 -of /tmp/localpart.$n >[2]/dev/null
if(isfat /tmp/localpart.$n)
fat=($fat $i)
if(isext2 /tmp/localpart.$n)
ext2=($ext2 $i)
if(is9660 /tmp/localpart.$n)
x9660=($x9660 $i)
if(isfossil $i)
fossil=($fossil $i)
echo
}
echo
echo The following storage media were detected.
echo Choose the one containing the distribution.
echo
for(i in $parts){
switch($i){
case $fat
echo ' '^$i^' (microsoft fat)'
case $ext2
echo ' '^$i^' (linux ext2)'
case $x9660
echo ' '^$i^' (iso9660 cdrom)'
case $fossil
echo ' '^$i^' (plan9 fossil)'
}
}
echo
mountstatus=x
while(! ~ $mountstatus ''){
prompt -w '' 'Distribution disk' $fat $x9660 $fossil
disk=$rd
srvmedia=()
mountmedia=()
switch($disk){
case $fs
mountmedia=(bind /n/newfs /n/distmedia)
case $fat
srvmedia=(dossrv)
mountmedia=(mount /srv/dos /n/distmedia $disk)
case $ext2
srvmedia=(ext2srv -r)
mountmedia=(mount /srv/ext2 /n/distmedia $disk)
case $x9660
srvmedia=(9660srv)
mountmedia=(mount /srv/9660 /n/distmedia $disk)
case $fossil
echo 'srv fossil.mountdist' > /tmp/fossi.conf
echo 'fsys main config '^$disk >> /tmp/fossil.conf
echo 'fsys main open -AWVP' >> /tmp/fossil.conf
echo 'fsys main' >> /tmp/fossil.conf
srvmedia=(fossil/fossil -c '. /tmp/fossil.conf')
mountmedia=(mount /srv/fossil.mountdist /n/distmedia)
case *
echo Unknown disk type '(cannot happen)'
exit oops
}
export srvmedia mountmedia
domount
mountstatus=$status
}
first=yes
dir=/
while(~ $first yes || ! havedist /n/distmedia/$dir){
if(~ $first yes){
echo
echo Which directory contains the distribution?
echo 'Any of the following will suffice (in order of preference):'
echo ' - the root directory of the cd image'
echo ' - the directory containing plan9.iso'
echo ' - the directory containing plan9.iso.bz2'
echo 'Typing `browse'' will put you in a shell that you can use to'
echo 'look for the directory.'
echo
first=no
}
prompt -d browse 'Location of archives'
dir=$rd
if(~ $dir browse){
echo This is a simple shell. Commands are:
echo ' cd directory - change to directory'
echo ' lc - list contents of current directory'
echo ' exit - exit shell'
echo
echo 'Move to the directory containing the distribution'
echo 'and then exit.'
echo
oifs=$ifs
ifs=$nl
dir=`{cdsh -r /n/distmedia}
ifs=$oifs
}
if(~ $#dir 0)
dir=safdsfdsfdsf
if(! ~ $#dir 1)
dir=$"dir
if(! havedist /n/distmedia/$dir)
echo 'No distribution found in '^`{cleanname /$dir}
}
distmediadir=$dir
export distmediadir
case checkdone
if(! ~ $#distmediadir 1){
mountdist=notdone
export mountdist
exit notdone
}
if(! havedist /n/distmedia/$distmediadir && ! havedist /n/newfs/dist){
mountdist=notdone
export mountdist
exit notdone
}
exitifdone
if(test -f /n/distmedia/$distmediadir/dist/replica/plan9.db){
bind /n/distmedia/$distmediadir /n/dist
bind -a /n/dist/386/bin /bin
bind -a /n/dist/rc/bin /bin
exitifdone
mountdist=notdone
export mountdist
exit notdone
}
trycdimage /n/distmedia/$distmediadir/plan9.iso
trycdimage /n/newfs/dist/plan9.iso
trycdimagebz2 /n/distmedia/$distmediadir/plan9.iso.bz2
trycdimagebz2 /n/newfs/dist/plan9.iso.bz2
mountdist=notdone
export mountdist
exit notdone
}