Subversion Repositories planix.SVN

#!/bin/rc

# desc: create a boot floppy or configure hard disk to boot plan 9
# prereq: copydist

switch($1) {
case go
        echo
        echo 'Initializing Plan 9 FAT configuration partition (9fat)'
        echo
        
        fat=(/dev/sd*/9fat)
        fat=$fat(1)
        disk=`{echo $fat | sed 's:/dev/::;s:/9fat::'}
        bootfs=`{echo $fs | sed 's:/dev/(sd..)/(.*):\1!\2:'}
        bootfat=`{echo $fs | sed 's:/dev/(sd..)/(.*):\1!9fat:'}
        if(! test -f /dev/$disk/9fat) {
                echo 'You have no 9fat partition.  Can''t setup booting.'
                exit
        }

        if(! test -f /tmp/plan9.ini) {
                {
                        sfs=`{echo $fs | sed 's;/dev;#S;'}
                        if(~ $fstype fossil fossil+venti){
                                echo bootfile'='$bootfat!9pcf
                                echo 'bootargs=local!'^$sfs
                                echo 'bootdisk=local!'^$sfs
                        }
                        if not {
                                echo bootfile'='$bootfs!/386/9pcdisk
                                echo 'bootdisk=local!'^$sfs
                        }
                        if(~ $fstype fossil+venti){
                                venti=`{echo $ventiarena | sed 's;/dev;#S;'}
                                echo venti'='^$venti
                        }
                        # sort -u avoids dups which could otherwise trigger
                        # pointless boot menus.
                        grep -v '(^\[)|menuitem|adisk|bootfile|bootdisk|bootargs|nobootprompt|mouseport|vgasize|monitor|cdboot' /tmp/plan9.orig |
                                sort -u
                        echo 'mouseport='^$mouseport
                        echo 'monitor='^$monitor
                        echo 'vgasize='^$vgasize
                } >/tmp/plan9.ini
        }
        if(! test -f /tmp/plan9ini.bak)
                cp /tmp/plan9.ini /tmp/plan9ini.bak

        need9fatformat=no
        if(! isfat /dev/$disk/9fat)
                need9fatformat=yes
        if not if(! mount -c /srv/dos /n/9fat /dev/$disk/9fat >[2]/dev/null)
                need9fatformat=yes
        if not if(! test -f /n/9fat/plan9.ini)
                need9fatformat=yes

        if (test -e  /n/newfs/386/9loadnousb)
                bind /n/newfs/386/9loadnousb /n/newfs/386/9load # cater to old bioses
        if(~ $need9fatformat yes){
                log Initializing Plan 9 FAT partition.
                disk/format -r 2 -d -b /386/pbs \
                        /dev/$disk/9fat /n/newfs/386/9load
                # silently install pbslba if the partition is way into the disk.
                # it''s our only hope.  only need this for >8.5GB into the disk.
                # but...
                # there are so few non-LBA bioses out
                # there anymore that we'll do this even if we're only 2GB into
                # the disk.  it's just not worth the headaches of dealing with
                # crappy bioses that don't address the whole 8.5GB properly

                9fatoffset=`{grep '^part 9fat ' /dev/$disk/ctl | awk '{print $4}'}
                if(! ~ $#9fatoffset 1) {
                        echo 'could not find plan 9 partition.'
                        echo 'cannot happen'
                        exit bad
                }
                if(test $9fatoffset -gt 2097152)        # 2GB
                        disk/format -b /386/pbslba /dev/$disk/9fat

                mount -c /srv/dos /n/9fat /dev/$disk/9fat
        }

        if(! test -f /n/9fat/4e){
                logprog cp /n/newfs/386/9load /n/9fat/9load
                logprog cp /n/newfs/386/9pcf /n/9fat/9pcf
                if(test -f /n/9fat/plan9.ini && ! test -f /n/9fat/plan9-3e.ini)
                        logprog mv /n/9fat/plan9.ini /n/9fat/plan9-3e.ini
                if(test -f /n/9fat/9pcdisk && ! test -f /n/9fat/9pc3e)
                        logprog mv /n/9fat/9pcdisk /n/9fat/9pc3e

                awk -f /bin/inst/mkini.awk >/n/9fat/plan9.ini
                >/n/9fat/4e
        }

        echo
        echo 'There are myriad ways to boot a Plan 9 system.'
        echo 'You can use any of the following.'
        echo
        echo '  floppy - create a boot floppy'
        echo '  plan9  - make the plan 9 disk partition the default for booting'
        echo '  win9x  - add a plan 9 option to windows 9x boot menu'
        echo '  winnt  - add a plan 9 option to windows nt/2000/xp boot manager'
        echo
        echo 'If you are upgrading an extant third edition installation and booting'
        echo 'from something other than a floppy, you needn''t run anything here.'
        echo 'Just type ctl-d.'

        oldbootsetup=$didbootsetup
        didbootsetup=1
        export didbootsetup
        prompt 'Enable boot method' floppy plan9 win9x winnt
        
        if(! boot$rd){
                didbootsetup=$oldbootsetup
                export didbootsetup
        }

case checkdone
        xxxfat=(/dev/sd*/9fat)
        if(! isfat $xxxfat(1) || ! ~ $didbootsetup 1){
                bootsetup=ready
                export bootsetup
        }
}