203 lines
5.7 KiB
Bash
Executable File
203 lines
5.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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#
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# This script creates a bootable image and should at some point in the future
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# be replaced by makefs.
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#
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: ${ARCH=i386}
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: ${OBJ=../obj.${ARCH}}
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: ${CROSS_TOOLS=${OBJ}/"tooldir.`uname -s`-`uname -r`-`uname -m`"/bin}
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: ${CROSS_PREFIX=${CROSS_TOOLS}/i586-elf32-minix-}
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: ${JOBS=1}
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: ${DESTDIR=${OBJ}/destdir.$ARCH}
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: ${RELEASETOOLSDIR=./releasetools/}
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: ${FSTAB=${DESTDIR}/etc/fstab}
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: ${BUILDVARS=}
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: ${BUILDSH=build.sh}
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: ${CREATE_IMAGE_ONLY=0}
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: ${RC=minix_x86.rc}
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#
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# Directory where to store temporary file system images
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#
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: ${IMG_DIR=${OBJ}/img}
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: ${CDFILES=${IMG_DIR}/cd}
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# All sized are written in 512 byte blocks
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#
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# we create a disk image of about 2 gig's
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# for alignment reasons, prefer sizes which are multiples of 4096 bytes
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#
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: ${ROOT_SIZE=$(( 64*(2**20) / 512))}
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: ${HOME_SIZE=$(( 128*(2**20) / 512))}
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: ${USR_SIZE=$(( 1792*(2**20) / 512))}
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#
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# Do some math to determine the start addresses of the partitions.
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# Don't leave holes so the 'partition' invocation later is easy.
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#
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# Where the kernel & boot modules will be
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MODDIR=${DESTDIR}/boot/minix/.temp
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while getopts "i" c
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do
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case "$c" in
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i) : ${IMG=minix_x86.iso}
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ISOMODE=1
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;;
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esac
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done
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: ${IMG=minix_x86.img}
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if [ "x${ISOMODE}" = "x1" ]
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then
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# In iso mode, make all FSes fit (i.e. as small as possible), but
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# leave some space on /
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ROOTSIZEARG="-x 5"
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else
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# In hd image mode, FSes have fixed sizes
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ROOTSIZEARG="-b $((${ROOT_SIZE} / 8))"
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USRSIZEARG="-b $((${USR_SIZE} / 8))"
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HOMESIZEARG="-b $((${HOME_SIZE} / 8))"
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fi
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if [ ! -f ${BUILDSH} ]
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then
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echo "Please invoke me from the root source dir, where ${BUILDSH} is."
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exit 1
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fi
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export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:${PATH}
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#
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# Are we going to build the minix sources?
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#
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if [ ${CREATE_IMAGE_ONLY} -eq 1 ]
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then
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if [ ! -d ${DESTDIR} ]
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then
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echo "Minix source code does'nt appear to have been built."
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echo "Please try with \$CREATE_IMAGE_ONLY set to 0."
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exit 1
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fi
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fi
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#
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# Artifacts from this script are stored in the IMG_DIR
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#
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rm -rf ${IMG_DIR} ${IMG}
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mkdir -p ${IMG_DIR} ${CDFILES}
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if [ ${CREATE_IMAGE_ONLY} -eq 0 ]
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then
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echo "Going to build Minix source code..."
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#
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# Remove the generated files to allow us call build.sh without '-V SLOPPY_FLIST=yes'.
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#
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rm -f ${FSTAB}
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#
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# Now start the build.
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#
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sh ${BUILDSH} -j ${JOBS} -m ${ARCH} -O ${OBJ} -D ${DESTDIR} ${BUILDVARS} -U -u distribution
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fi
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#
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# create a fstab entry in /etc this is normally done during the
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# setup phase on x86
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#
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cat >${FSTAB} <<END_FSTAB
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/dev/c0d0p2 /usr mfs rw 0 2
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/dev/c0d0p3 /home mfs rw 0 2
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none /sys devman rw,rslabel=devman 0 0
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none /dev/pts ptyfs rw,rslabel=ptyfs 0 0
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END_FSTAB
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rm -f ${DESTDIR}/SETS.*
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${CROSS_TOOLS}/nbpwd_mkdb -V 0 -p -d ${DESTDIR} ${DESTDIR}/etc/master.passwd
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#
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# make the different file system. this part is *also* hacky. We first convert
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# the METALOG.sanitised using mtree into a input METALOG containing uids and
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# gids.
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# After that we do some magic processing to add device nodes (also missing from METALOG)
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# and convert the METALOG into a proto file that can be used by mkfs.mfs
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#
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echo "Creating the file systems"
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#
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# read METALOG and use mtree to convert the user and group names into uid and gids
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# FIX put "input somewhere clean"
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#
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cat ${DESTDIR}/METALOG.sanitised | ${CROSS_TOOLS}/nbmtree -N ${DESTDIR}/etc -C -K device > ${IMG_DIR}/input
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# add rc (if any)
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if [ -f ${RC} ]; then
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cp ${RC} ${DESTDIR}/usr/etc/rc.local
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echo "./usr/etc/rc.local type=file uid=0 gid=0 mode=0644" >> ${IMG_DIR}/input
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fi
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# add fstab
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echo "./etc/fstab type=file uid=0 gid=0 mode=0755 size=747 time=1365060731.000000000" >> ${IMG_DIR}/input
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# fill root.img (skipping /usr entries while keeping the /usr directory)
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cat ${IMG_DIR}/input | grep -v "^./usr/" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR} -o ${IMG_DIR}/root.proto
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#
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# Create proto files for /usr and /home using toproto.
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#
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cat ${IMG_DIR}/input | grep "^\./usr/\|^. " | sed "s,\./usr,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/usr -o ${IMG_DIR}/usr.proto
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cat ${IMG_DIR}/input | grep "^\./home/\|^. " | sed "s,\./home,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/home -o ${IMG_DIR}/home.proto
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if [ "x${ISOMODE}" = "x1" ]
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then
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cp ${DESTDIR}/usr/mdec/boot_monitor ${CDFILES}/boot
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cp ${MODDIR}/* ${CDFILES}/
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. ${RELEASETOOLSDIR}/release.functions
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cd_root_changes # uses $CDFILES and writes $CDFILES/boot.cfg
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# start the image off with the iso image; reduce root size to reserve
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${CROSS_TOOLS}/nbwriteisofs -s0x0 -l MINIX -B ${DESTDIR}/usr/mdec/bootxx_cd9660 -n ${CDFILES} ${IMG}
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ISO_SIZE=$((`${CROSS_TOOLS}/nbstat -f %z ${IMG}` / 512))
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else
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# just make an empty iso partition
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ISO_SIZE=8
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fi
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#
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# Generate /root, /usr and /home partition images.
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#
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echo "Writing Minix filesystem images"
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ROOT_START=${ISO_SIZE}
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echo " - ROOT"
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_ROOT_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d ${ROOTSIZEARG} -I $((${ROOT_START}*512)) ${IMG} ${IMG_DIR}/root.proto`/512))
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USR_START=$((${ROOT_START} + ${_ROOT_SIZE}))
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echo " - USR"
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_USR_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d ${USRSIZEARG} -I $((${USR_START}*512)) ${IMG} ${IMG_DIR}/usr.proto`/512))
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HOME_START=$((${USR_START} + ${_USR_SIZE}))
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echo " - HOME"
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_HOME_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d ${HOMESIZEARG} -I $((${HOME_START}*512)) ${IMG} ${IMG_DIR}/home.proto`/512))
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#
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# Write the partition table using the natively compiled
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# minix partition utility
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#
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${CROSS_TOOLS}/nbpartition -m ${IMG} 0 81:${ISO_SIZE} \
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81:${_ROOT_SIZE} 81:${_USR_SIZE} 81:${_HOME_SIZE}
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mods="`( cd ${MODDIR}; echo mod* | tr ' ' ',' )`"
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if [ "x${ISOMODE}" = "x1" ]
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then
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echo "CD image at `pwd`/${IMG}"
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else
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echo "To boot this image on kvm:"
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echo "cd ${MODDIR} && qemu-system-i386 -display none -serial stdio -kernel kernel -append \"console=tty00 rootdevname=c0d0p1\" -initrd \"${mods}\" -hda `pwd`/${IMG} --enable-kvm"
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fi
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