2b03b192f0
The CD now boots directly from the ISO 9660 filesystem instead of using MBR partitioning with Minix file systems. This saves some space on the CD and reduces memory requirements by some unknown amount as the root ramdisk is completely eliminated. The setup is also modified to be more NetBSD-like (unpacking sets tarballs instead of blindly copying the CD contents). This allows massive space savings because only the base system used for installation is stored uncompressed and more modularity (to be exploited at a later time). The sets themselves are to be refined, but are enough for now. Those two steps are melded together because copying the CD contents with isofs as the root filesystem results in some failed tests in minix-posix, probably due to some obscure corner-case bugs in isofs. Having a read-only root filesystem outputs some error messages because it isn't properly supported. Ramdisks on /var and /tmp are used to mitigate this, but the clean solution would involve union mounts, something Minix 3 doesn't support for the time being. Change-Id: Ib4700d9f10c5b4b297e0994b5338847951fc79b4
199 lines
5.8 KiB
Plaintext
199 lines
5.8 KiB
Plaintext
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make_hdimage()
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{
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dd if=$TMPDISKUSR of=usrimage bs=$BS count=$USRBLOCKS
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rootsize=`stat -f %z rootimage`
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usrsize=`stat -f %z usrimage`
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rootsects=`expr $rootsize / 512`
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usrsects=`expr $usrsize / 512`
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# installboot -m needs at least 1KB
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dd < /dev/zero >tmpimage count=2
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partition -fm tmpimage 2 81:$rootsects* 0:0 81:$usrsects
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installboot_nbsd -m tmpimage /usr/mdec/mbr
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dd < tmpimage > subpart count=1
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primsects=`expr 1 + $rootsects + $usrsects`
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cyl=`expr '(' $primsects ')' / $secs + 1`
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padsects=`expr $cyl \* $secs - 1 - $primsects`
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{ dd < /dev/zero count=1
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cat subpart
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cat rootimage
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cat usrimage
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dd < /dev/zero count=$padsects
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} > hdimage
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partition -m hdimage 81:`expr $primsects + $padsects`*
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installboot_nbsd -m hdimage /usr/mdec/mbr
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}
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retrieve()
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{
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dir=$1
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list=`pwd`/$2
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URLS=""
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echo "Retrieving packages form $PACKAGEURL"
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(
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cd $dir || exit 1
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SUMMARY=pkg_summary
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rm -f pkg_summary* || true
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fetch $PACKAGEURL/$SUMMARY.bz2
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bzip2 -d $SUMMARY.bz2
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cat $list | while read name
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do pkgname="`fgrep PKGNAME=${name} $SUMMARY | sed 's/PKGNAME=//g'`"
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if [ `echo $pkgname | wc -w` -ne 1 ]
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then echo " *** Could not resolve $name (not found or too many matches: $pkgname) ***"
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echo Matches:
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echo $pkgname
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exit 1
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else echo Getting $pkgname
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fetch -r ${PACKAGEURL}/${pkgname}.tgz
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fi
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echo -n "."
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done
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)
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echo done
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}
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cd_root_changes()
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{
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cat >$WORK_DIR/boot.cfg <<END_BOOT_CFG
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banner=Welcome to the MINIX 3 installation CD
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banner================================================================================
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banner=
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menu=Regular MINIX 3:multiboot /boot/minix/.temp/kernel bootcd=1 cdproberoot=1 rootdevname=ram disable=inet
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menu=Regular MINIX 3 (with AHCI):multiboot /boot/minix/.temp/kernel bootcd=1 cdproberoot=1 rootdevname=ram disable=inet ahci=yes
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menu=Edit menu option:edit
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menu=Drop to boot prompt:prompt
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clear=1
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timeout=10
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default=1
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load=/boot/minix/.temp/mod01_ds
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load=/boot/minix/.temp/mod02_rs
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load=/boot/minix/.temp/mod03_pm
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load=/boot/minix/.temp/mod04_sched
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load=/boot/minix/.temp/mod05_vfs
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load=/boot/minix/.temp/mod06_memory
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load=/boot/minix/.temp/mod07_tty
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load=/boot/minix/.temp/mod08_mfs
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load=/boot/minix/.temp/mod09_vm
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load=/boot/minix/.temp/mod10_pfs
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load=/boot/minix/.temp/mod11_init
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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# This space intentionally left blank - leave to appease bootloader!
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END_BOOT_CFG
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}
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copy_local_packages()
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{
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if [ -d $PACKAGEDIR -a -f $PACKAGELIST -a $PACKAGES -ne 0 ]
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then
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index=pkg_summary
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indexpath=$PACKAGEDIR/.index
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if [ ! -d $indexpath ]
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then mkdir $indexpath
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fi
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if [ ! -d $indexpath ]
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then echo "Couldn't create $indexpath."
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exit 1
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fi
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echo "" >$PACKAGEDIR/All/$index
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echo " * Transfering $PACKAGEDIR to $RELEASEPACKAGE"
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for pkgprefix in `cat $PACKAGELIST`
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do realfn="`echo $PACKAGEDIR/All/${pkgprefix}*.tgz`"
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if [ -f "$realfn" ]
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then
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# Copy package and create package's index
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(
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p="`basename $realfn`"
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cd $PACKAGEDIR/All
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cp $p $RELEASEPACKAGE/
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indexname=$indexpath/$p.$index
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pkg_info -X $p >$indexname
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if [ ! -f $indexname ]
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then echo Missing $indexname.
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exit 1
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fi
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if [ "`wc -l <$indexname`" -lt 3 ]
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then $indexname is too short.
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rm $indexname
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exit 1
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fi
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cat $indexname >>$PACKAGEDIR/All/$index
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)
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else
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echo "Can't find $pkgprefix Missing."
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fi
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done
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bzip2 -f $PACKAGEDIR/All/$index
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cp $PACKAGEDIR/All/$index.bz2 $RELEASEPACKAGE/
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fi
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}
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fitfs()
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{
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path="$1"
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ramdisk="$2"
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extra_inodes="$3"
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extra_zones="$4"
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mbsdefault="$5"
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# Determine number of inodes
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inodes=`find $path | egrep -v ^$path/usr | wc -l`
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inodes="`expr $inodes + $extra_inodes`"
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# Determine number of data zones
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zonekbs=`du -ks $path | cut -d' ' -f1`
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zonekbsignore=0
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[ ! -d $path/usr ] || zonekbsignore=`du -ks $path/usr | cut -d" " -f1`
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zones="`expr \( $zonekbs - $zonekbsignore \) / \( $BS / 1024 \) + $extra_zones`"
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# Determine file system size
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BSBITS="`expr $BS \* 8`"
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imap_blocks="`expr \( $inodes + $BSBITS - 1 \) / $BSBITS`"
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inode_blocks="`expr \( $inodes \* 64 + $BS - 1 \) / $BS`"
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zmap_blocks="`expr \( $zones + $BSBITS - 1 \) / $BSBITS`"
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blocks="`expr 1 + 1 + $imap_blocks + $zmap_blocks + $inode_blocks + $zones`"
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kbs="`expr $blocks \* \( $BS / 1024 \)`"
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# Apply default if higher
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if [ -n "$mbsdefault" ]
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then
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kbsdefault="`expr $mbsdefault \* 1024`"
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if [ "$kbs" -lt "$kbsdefault" ]
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then kbs=$kbsdefault
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else echo "warning: ${mbsdefault}mb is too small, using ${kbs}kb"
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fi
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fi
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# Create a filesystem on the target ramdisk
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ramdisk $kbs $ramdisk
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mkfs.mfs -B $BS -i $inodes $ramdisk
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}
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