# Add extra docs to ${WORKDIR}/$1
addextradocs () {
	log "Extracting extra docs"

	# 8.0 doesn't have any extra docs
}

# Extract the released trees and, if appropriate, construct a world (base
# plus source code) in which to perform builds.
extractiso () {
	# Create and mount a md(4) attached to the ISO image.
	ISOMD=`mdconfig -a -t vnode -f ${WORKDIR}/iso.img -n`
	mkdir -p ${WORKDIR}/iso
	mount -t cd9660 -o ro,nosuid /dev/md${ISOMD} ${WORKDIR}/iso

	# Extract the various components into different directories
	log "Extracting components"
	for C in ${WORLDPARTS}; do
		mkdir -p ${WORKDIR}/release/R/trees/world/${C}
		cat ${WORKDIR}/iso/${REL}/${C}/${C}.?? |
		    tar -xpzf - -C ${WORKDIR}/release/R/trees/world/${C}
	done
	mv ${WORKDIR}/release/R/trees/world/manpages/usr/share/man/man9/kproc_resume,.9.gz	\
	    ${WORKDIR}/release/R/trees/world/manpages/usr/share/man/man9/kproc_resume.9.gz
	mv ${WORKDIR}/release/R/trees/world/catpages/usr/share/man/cat9/kproc_resume,.9.gz	\
	    ${WORKDIR}/release/R/trees/world/catpages/usr/share/man/cat9/kproc_resume.9.gz
	for C in ${KERNELPARTS}; do
		mkdir -p ${WORKDIR}/release/R/trees/kernel/${C}
		cat ${WORKDIR}/iso/${REL}/kernels/${C}.?? |
		    tar -xpzf - -C ${WORKDIR}/release/R/trees/kernel/${C}
	done
	for C in ${SOURCEPARTS}; do
		mkdir -p ${WORKDIR}/release/R/trees/src/${C}
		cat ${WORKDIR}/iso/${REL}/src/s${C}.?? |
		    tar -xpzf - -C ${WORKDIR}/release/R/trees/src/${C}
	done

	# If the release ISO we're handling belongs to the platform
	# we're running right now, create a world image for future use.
	if [ ${TARGET} = ${HOSTPLATFORM} ]; then
		log "Constructing world+src image"

		# Create directory for world
		mkdir ${WORKDIR}/world/

		# Extract world and source distributions
		for C in ${WORLDPARTS}; do
			cat ${WORKDIR}/iso/${REL}/${C}/${C}.?? |
			    tar -xpzf - -C ${WORKDIR}/world/
		done
		for C in ${SOURCEPARTS}; do
			cat ${WORKDIR}/iso/${REL}/src/s${C}.?? |
			    tar -xpzf - -C ${WORKDIR}/world/usr/src/
		done

		# build a single tarball of them.
		tar -czf ${WORKDIR}/../world.tgz -C ${WORKDIR}/world .

		# clean up
		nuke world
	fi

	# Unmount and detach the ISO image md(4).
	umount ${WORKDIR}/iso
	rmdir ${WORKDIR}/iso
	mdconfig -d -u ${ISOMD}
}