Index: head/tools/tools/nanobsd/defaults.sh
===================================================================
--- head/tools/tools/nanobsd/defaults.sh	(revision 293398)
+++ head/tools/tools/nanobsd/defaults.sh	(revision 293399)
@@ -1,1074 +1,1073 @@
 #!/bin/sh
 #
 # Copyright (c) 2005 Poul-Henning Kamp.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1. Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
 # 2. Redistributions in binary form must reproduce the above copyright
 #    notice, this list of conditions and the following disclaimer in the
 #    documentation and/or other materials provided with the distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 # SUCH DAMAGE.
 #
 # $FreeBSD$
 #
 
 set -e
 
 #######################################################################
 #
 # Setup default values for all controlling variables.
 # These values can be overridden from the config file(s)
 #
 #######################################################################
 
 # Name of this NanoBSD build.  (Used to construct workdir names)
 NANO_NAME=full
 
 # Source tree directory
 NANO_SRC=/usr/src
 
 # Where nanobsd additional files live under the source tree
 NANO_TOOLS=tools/tools/nanobsd
 
 # Where cust_pkgng() finds packages to install
 NANO_PACKAGE_DIR=${NANO_SRC}/${NANO_TOOLS}/Pkg
 NANO_PACKAGE_LIST="*"
 
 # where package metadata gets placed
 NANO_PKG_META_BASE=/var/db
 
 # Object tree directory
 # default is subdir of /usr/obj
 #NANO_OBJ=""
 
 # The directory to put the final images
 # default is ${NANO_OBJ}
 #NANO_DISKIMGDIR=""
 
 # Make & parallel Make
 NANO_MAKE="make"
 NANO_PMAKE="make -j 3"
 
 # The default name for any image we create.
 NANO_IMGNAME="_.disk.full"
 
 # Options to put in make.conf during buildworld only
 CONF_BUILD=' '
 
 # Options to put in make.conf during installworld only
 CONF_INSTALL=' '
 
 # Options to put in make.conf during both build- & installworld.
 CONF_WORLD=' '
 
 # Kernel config file to use
 NANO_KERNEL=GENERIC
 
 # Kernel modules to install. If empty, no modules are installed.
 # Use "default" to install all built modules.
 NANO_MODULES=
 
 # Customize commands.
 NANO_CUSTOMIZE=""
 
 # Late customize commands.
 NANO_LATE_CUSTOMIZE=""
 
 # Newfs paramters to use
 NANO_NEWFS="-b 4096 -f 512 -i 8192 -U"
 
 # The drive name of the media at runtime
 NANO_DRIVE=ad0
 
 # Target media size in 512 bytes sectors
 NANO_MEDIASIZE=2000000
 
 # Number of code images on media (1 or 2)
 NANO_IMAGES=2
 
 # 0 -> Leave second image all zeroes so it compresses better.
 # 1 -> Initialize second image with a copy of the first
 NANO_INIT_IMG2=1
 
 # Size of code file system in 512 bytes sectors
 # If zero, size will be as large as possible.
 NANO_CODESIZE=0
 
 # Size of configuration file system in 512 bytes sectors
 # Cannot be zero.
 NANO_CONFSIZE=2048
 
 # Size of data file system in 512 bytes sectors
 # If zero: no partition configured.
 # If negative: max size possible
 NANO_DATASIZE=0
 
 # Size of the /etc ramdisk in 512 bytes sectors
 NANO_RAM_ETCSIZE=10240
 
 # Size of the /tmp+/var ramdisk in 512 bytes sectors
 NANO_RAM_TMPVARSIZE=10240
 
 # Media geometry, only relevant if bios doesn't understand LBA.
 NANO_SECTS=63
 NANO_HEADS=16
 
 # boot0 flags/options and configuration
 NANO_BOOT0CFG="-o packet -s 1 -m 3"
 NANO_BOOTLOADER="boot/boot0sio"
 
 # boot2 flags/options
 # default force serial console
 NANO_BOOT2CFG="-h -S115200"
 
 # Backing type of md(4) device
 # Can be "file" or "swap"
 NANO_MD_BACKING="file"
 
 # for swap type md(4) backing, write out the mbr only
 NANO_IMAGE_MBRONLY=true
 
 # Progress Print level
 PPLEVEL=3
 
 # Set NANO_LABEL to non-blank to form the basis for using /dev/ufs/label
 # in preference to /dev/${NANO_DRIVE}
 # Root partition will be ${NANO_LABEL}s{1,2}
 # /cfg partition will be ${NANO_LABEL}s3
 # /data partition will be ${NANO_LABEL}s4
 NANO_LABEL=""
 NANO_SLICE_ROOT=s1
 NANO_SLICE_ALTROOT=s2
 NANO_SLICE_CFG=s3
 NANO_SLICE_DATA=s4
 
 # Default ownwership for nopriv build
 NANO_DEF_UNAME=root
 NANO_DEF_GNAME=wheel
 
 #######################################################################
 # Architecture to build.  Corresponds to TARGET_ARCH in a buildworld.
 # Unfortunately, there's no way to set TARGET at this time, and it
 # conflates the two, so architectures where TARGET != TARGET_ARCH and
 # TARGET can't be guessed from TARGET_ARCH do not work.  This defaults
 # to the arch of the current machine.
 NANO_ARCH=`uname -p`
 
 # CPUTYPE defaults to "" which is the default when CPUTYPE isn't
 # defined.
 NANO_CPUTYPE=""
 
 # Directory to populate /cfg from
 NANO_CFGDIR=""
 
 # Directory to populate /data from
 NANO_DATADIR=""
 
 # We don't need SRCCONF or SRC_ENV_CONF. NanoBSD puts everything we
 # need for the build in files included with __MAKE_CONF. Override in your
 # config file if you really must. We set them unconditionally here, though
 # in case they are stray in the build environment
 SRCCONF=/dev/null
 SRC_ENV_CONF=/dev/null
  
 #######################################################################
 #
 # The functions which do the real work.
 # Can be overridden from the config file(s)
 #
 #######################################################################
 
 # Export values into the shell. Must use { } instead of ( ) like
 # other functions to avoid a subshell.
 # We set __MAKE_CONF as a global since it is easier to get quoting
 # right for paths with spaces in them.
 make_export ( ) {
 	# Similar to export_var, except puts the data out to stdout
 	var=$1
 	eval val=\$$var
 	echo "Setting variable: $var=\"$val\""
 	export $1
 }
 
 nano_make_build_env ( ) {
 	__MAKE_CONF="${NANO_MAKE_CONF_BUILD}"
 	make_export __MAKE_CONF
 }
 
 nano_make_install_env ( ) {
 	__MAKE_CONF="${NANO_MAKE_CONF_INSTALL}"
 	make_export __MAKE_CONF
 }
 
 # Extra environment variables for kernel builds
 nano_make_kernel_env ( ) {
 	if [ -f ${NANO_KERNEL} ] ; then
 		KERNCONFDIR="$(realpath $(dirname ${NANO_KERNEL}))"
 		KERNCONF="$(basename ${NANO_KERNEL})"
 		make_export KERNCONFDIR
 		make_export KERNCONF
 	else
 		export KERNCONF="${NANO_KERNEL}"
 		make_export KERNCONF
 	fi
 }
 
 nano_global_make_env ( ) (
 	# global settings for the make.conf file, if set
 	[ -z "${NANO_ARCH}" ] || echo TARGET_ARCH="${NANO_ARCH}"
 	[ -z "${NANO_CPUTYPE}" ] || echo TARGET_CPUTYPE="${NANO_CPUTYPE}"
 )
 
 # rm doesn't know -x prior to FreeBSD 10, so cope with a variety of build
 # hosts for now. This will go away when support in the base goes away.
 rm ( ) {
     echo "NANO RM $*"
 	case $(uname -r) in
 	7*|8*|9*) command rm $* ;;
 	*) command rm -x $* ;;
 	esac
 }
 
 #
 # Create empty files in the target tree, and record the fact.  All paths
 # are relative to NANO_WORLDDIR.
 #
 tgt_touch ( ) (
 
 	cd "${NANO_WORLDDIR}"
 	for i; do
 		touch $i
 		echo "./${i} type=file" >> ${NANO_METALOG}
 	done
 )
 
 #
 # Convert a directory into a symlink. Takes two arguments, the
 # current directory and what it should become a symlink to. The
 # directory is removed and a symlink is created. If we're doing
 # a nopriv build, then append this fact to the metalog
 #
 tgt_dir2symlink () (
 	dir=$1
 	symlink=$2
 
 	cd "${NANO_WORLDDIR}"
 	rm -rf "$dir"
 	ln -s "$symlink" "$dir"
 	if [ -n "$NANO_METALOG" ]; then
 		echo "./${dir} type=link mode=0777 link=${symlink}" >> ${NANO_METALOG}
 	fi
 )
 
 # run in the world chroot, errors fatal
 CR ( ) {
 	chroot "${NANO_WORLDDIR}" /bin/sh -exc "$*"
 }
 
 # run in the world chroot, errors not fatal
 CR0 ( ) {
 	chroot "${NANO_WORLDDIR}" /bin/sh -c "$*" || true
 }
 
 nano_cleanup ( ) (
 	[ $? -eq 0 ] || echo "Error encountered.  Check for errors in last log file." 1>&2
 	exit $?
 )
 
 clean_build ( ) (
 	pprint 2 "Clean and create object directory (${MAKEOBJDIRPREFIX})"
 
 	if ! rm -rf ${MAKEOBJDIRPREFIX}/ > /dev/null 2>&1 ; then
 		chflags -R noschg ${MAKEOBJDIRPREFIX}/
 		rm -r ${MAKEOBJDIRPREFIX}/
 	fi
 )
 
 make_conf_build ( ) (
 	pprint 2 "Construct build make.conf ($NANO_MAKE_CONF_BUILD)"
 
 	mkdir -p ${MAKEOBJDIRPREFIX}
 	printenv > ${MAKEOBJDIRPREFIX}/_.env
 
 	# Make sure we get all the global settings that NanoBSD wants
 	# in addition to the user's global settings
 	(
 	nano_global_make_env
 	echo "${CONF_WORLD}" 
 	echo "${CONF_BUILD}"
 	) > ${NANO_MAKE_CONF_BUILD}
 )
 
 build_world ( ) (
 	pprint 2 "run buildworld"
 	pprint 3 "log: ${MAKEOBJDIRPREFIX}/_.bw"
 
 	(
 	nano_make_build_env
 	set -o xtrace
 	cd "${NANO_SRC}"
 	${NANO_PMAKE} buildworld
 	) > ${MAKEOBJDIRPREFIX}/_.bw 2>&1
 )
 
 build_kernel ( ) (
 	local extra
 
 	pprint 2 "build kernel ($NANO_KERNEL)"
 	pprint 3 "log: ${MAKEOBJDIRPREFIX}/_.bk"
 
 	(
 	nano_make_build_env
 	nano_make_kernel_env
 
 	# Note: We intentionally build all modules, not only the ones in
 	# NANO_MODULES so the built world can be reused by multiple images.
 	# Although MODULES_OVERRIDE can be defined in the kenrel config
 	# file to override this behavior. Just set NANO_MODULES=default.
 	set -o xtrace
 	cd "${NANO_SRC}"
 	${NANO_PMAKE} buildkernel
 	) > ${MAKEOBJDIRPREFIX}/_.bk 2>&1
 )
 
 clean_world ( ) (
 	if [ "${NANO_OBJ}" != "${MAKEOBJDIRPREFIX}" ]; then
 		pprint 2 "Clean and create object directory (${NANO_OBJ})"
 		if ! rm -rf ${NANO_OBJ}/ > /dev/null 2>&1 ; then
 			chflags -R noschg ${NANO_OBJ}
 			rm -r ${NANO_OBJ}/
 		fi
 		mkdir -p "${NANO_OBJ}" "${NANO_WORLDDIR}"
 		printenv > ${NANO_OBJ}/_.env
 	else
 		pprint 2 "Clean and create world directory (${NANO_WORLDDIR})"
 		if ! rm -rf "${NANO_WORLDDIR}/" > /dev/null 2>&1 ; then
 			chflags -R noschg "${NANO_WORLDDIR}"
 			rm -rf "${NANO_WORLDDIR}/"
 		fi
 		mkdir -p "${NANO_WORLDDIR}"
 	fi
 )
 
 make_conf_install ( ) (
 	pprint 2 "Construct install make.conf ($NANO_MAKE_CONF_INSTALL)"
 
 	# Make sure we get all the global settings that NanoBSD wants
 	# in addition to the user's global settings
 	(
 	nano_global_make_env
 	echo "${CONF_WORLD}"
 	echo "${CONF_INSTALL}"
 	if [ -n "${NANO_NOPRIV_BUILD}" ]; then
 	    echo NO_ROOT=t
 	    echo METALOG=${NANO_METALOG}
 	fi
 	) >  ${NANO_MAKE_CONF_INSTALL}
 )
 
 install_world ( ) (
 	pprint 2 "installworld"
 	pprint 3 "log: ${NANO_OBJ}/_.iw"
 
 	(
 	nano_make_install_env
 	set -o xtrace
 	cd "${NANO_SRC}"
 	${NANO_MAKE} installworld DESTDIR="${NANO_WORLDDIR}"
 	chflags -R noschg "${NANO_WORLDDIR}"
 	) > ${NANO_OBJ}/_.iw 2>&1
 )
 
 install_etc ( ) (
 
 	pprint 2 "install /etc"
 	pprint 3 "log: ${NANO_OBJ}/_.etc"
 
 	(
 	nano_make_install_env
 	set -o xtrace
 	cd "${NANO_SRC}"
 	${NANO_MAKE} distribution DESTDIR="${NANO_WORLDDIR}"
 	# make.conf doesn't get created by default, but some ports need it
 	# so they can spam it.
 	cp /dev/null "${NANO_WORLDDIR}"/etc/make.conf
 	) > ${NANO_OBJ}/_.etc 2>&1
 )
 
 install_kernel ( ) (
 	local extra
 
 	pprint 2 "install kernel ($NANO_KERNEL)"
 	pprint 3 "log: ${NANO_OBJ}/_.ik"
 
 	(
 
 	nano_make_install_env
 	nano_make_kernel_env    
 
 	if [ "${NANO_MODULES}" != "default" ]; then
 		MODULES_OVERRIDE="${NANO_MODULES}"
 		make_export MODULES_OVERRIDE
 	fi
 
 	set -o xtrace
 	cd "${NANO_SRC}"
 	${NANO_MAKE} installkernel DESTDIR="${NANO_WORLDDIR}"
 
 	) > ${NANO_OBJ}/_.ik 2>&1
 )
 
 native_xtools ( ) (
 	print 2 "Installing the optimized native build tools for cross env"
 	pprint 3 "log: ${NANO_OBJ}/_.native_xtools"
 
 	(
 
 	nano_make_install_env
 	set -o xtrace
 	cd "${NANO_SRC}"
 	${NANO_MAKE} native-xtools DESTDIR="${NANO_WORLDDIR}"
 
 	) > ${NANO_OBJ}/_.native_xtools 2>&1
 )
 
 #
 # Run the requested set of customization scripts, run after we've
 # done an installworld, installed the etc files, installed the kernel
 # and tweaked them in the standard way.
 #
 run_customize ( ) (
 
 	pprint 2 "run customize scripts"
 	for c in $NANO_CUSTOMIZE
 	do
 		pprint 2 "customize \"$c\""
 		pprint 3 "log: ${NANO_OBJ}/_.cust.$c"
 		pprint 4 "`type $c`"
 		( set -x ; $c ) > ${NANO_OBJ}/_.cust.$c 2>&1
 	done
 )
 
 #
 # Run any last-minute customization commands after we've had a chance to
 # setup nanobsd, prune empty dirs from /usr, etc
 #
 run_late_customize ( ) (
 
 	pprint 2 "run late customize scripts"
 	for c in $NANO_LATE_CUSTOMIZE
 	do
 		pprint 2 "late customize \"$c\""
 		pprint 3 "log: ${NANO_OBJ}/_.late_cust.$c"
 		pprint 4 "`type $c`"
 		( set -x ; $c ) > ${NANO_OBJ}/_.late_cust.$c 2>&1
 	done
 )
 
 #
 # Hook called after we run all the late customize commands, but
 # before we invoke the disk imager. The nopriv build uses it to
 # read in the meta log, apply the changes other parts of nanobsd
 # have been recording their actions. It's not anticipated that
 # a user's cfg file would override this.
 #
 fixup_before_diskimage ( ) (
 
 	# Run the deduplication script that takes the matalog journal and
 	# combines multiple entries for the same file (see source for
 	# details). We take the extra step of removing the size keywords. This
 	# script, and many of the user scripts, copies, appeneds and otherwise
 	# modifies files in the build, changing their sizes.  These actions are
 	# impossible to trap, so go ahead remove the size= keyword. For this
 	# narrow use, it doesn't buy us any protection and just gets in the way.
 	# The dedup tool's output must be sorted due to limitations in awk.
 	if [ -n "${NANO_METALOG}" ]; then
 		pprint 2 "Fixing metalog"
 		cp ${NANO_METALOG} ${NANO_METALOG}.pre
-		(echo "/set uname=${NANO_DEF_UNAME} gname=${NANO_DEF_GNAME}" &&
-			cat ${NANO_METALOG}.pre) | \
-		    ${NANO_TOOLS}/mtree-dedup.awk | \
-		    sed -e 's/ size=[0-9][0-9]*//' | sort > ${NANO_METALOG}
+		echo "/set uname=${NANO_DEF_UNAME} gname=${NANO_DEF_GNAME}" > ${NANO_METALOG}
+		cat ${NANO_METALOG}.pre | ${NANO_TOOLS}/mtree-dedup.awk | \
+		    sed -e 's/ size=[0-9][0-9]*//' | sort >> ${NANO_METALOG}
 	fi	
 )
 
 setup_nanobsd ( ) (
 	pprint 2 "configure nanobsd setup"
 	pprint 3 "log: ${NANO_OBJ}/_.dl"
 
 	(
 	cd "${NANO_WORLDDIR}"
 
 	# Move /usr/local/etc to /etc/local so that the /cfg stuff
 	# can stomp on it.  Otherwise packages like ipsec-tools which
 	# have hardcoded paths under ${prefix}/etc are not tweakable.
 	if [ -d usr/local/etc ] ; then
 		(
 		mkdir -p etc/local
 		cd usr/local/etc
 		find . -print | cpio -dumpl ../../../etc/local
 		cd ..
 		rm -rf etc
 		ln -s ../../etc/local etc
 		)
 	fi
 
 	for d in var etc
 	do
 		# link /$d under /conf
 		# we use hard links so we have them both places.
 		# the files in /$d will be hidden by the mount.
 		mkdir -p conf/base/$d conf/default/$d
 		find $d -print | cpio -dumpl conf/base/
 	done
 
 	echo "$NANO_RAM_ETCSIZE" > conf/base/etc/md_size
 	echo "$NANO_RAM_TMPVARSIZE" > conf/base/var/md_size
 
 	# pick up config files from the special partition
 	echo "mount -o ro /dev/${NANO_DRIVE}${NANO_SLICE_CFG}" > conf/default/etc/remount
 
 	# Put /tmp on the /var ramdisk (could be symlink already)
 	tgt_dir2symlink tmp var/tmp
 
 	) > ${NANO_OBJ}/_.dl 2>&1
 )
 
 setup_nanobsd_etc ( ) (
 	pprint 2 "configure nanobsd /etc"
 
 	(
 	cd "${NANO_WORLDDIR}"
 
 	# create diskless marker file
 	touch etc/diskless
 
 	[ -n "${NANO_NOPRIV_BUILD}" ] && chmod 666 etc/defaults/rc.conf
 
 	# Make root filesystem R/O by default
 	echo "root_rw_mount=NO" >> etc/defaults/rc.conf
 	# Disable entropy file, since / is read-only /var/db/entropy should be enough?
 	echo "entropy_file=NO" >> etc/defaults/rc.conf
 
 	[ -n "${NANO_NOPRIV_BUILD}" ] && chmod 444 etc/defaults/rc.conf
 
 	# save config file for scripts
 	echo "NANO_DRIVE=${NANO_DRIVE}" > etc/nanobsd.conf
 
 	echo "/dev/${NANO_DRIVE}${NANO_SLICE_ROOT}a / ufs ro 1 1" > etc/fstab
 	echo "/dev/${NANO_DRIVE}${NANO_SLICE_CFG} /cfg ufs rw,noauto 2 2" >> etc/fstab
 	mkdir -p cfg
 	)
 )
 
 prune_usr ( ) (
 
 	# Remove all empty directories in /usr 
 	find "${NANO_WORLDDIR}"/usr -type d -depth -print |
 		while read d
 		do
 			rmdir $d > /dev/null 2>&1 || true 
 		done
 )
 
 newfs_part ( ) (
 	local dev mnt lbl
 	dev=$1
 	mnt=$2
 	lbl=$3
 	echo newfs ${NANO_NEWFS} ${NANO_LABEL:+-L${NANO_LABEL}${lbl}} ${dev}
 	newfs ${NANO_NEWFS} ${NANO_LABEL:+-L${NANO_LABEL}${lbl}} ${dev}
 	mount -o async ${dev} ${mnt}
 )
 
 # Convenient spot to work around any umount issues that your build environment
 # hits by overriding this method.
 nano_umount ( ) (
 	umount ${1}
 )
 
 populate_slice ( ) (
 	local dev dir mnt lbl
 	dev=$1
 	dir=$2
 	mnt=$3
 	lbl=$4
 	echo "Creating ${dev} (mounting on ${mnt})"
 	newfs_part ${dev} ${mnt} ${lbl}
 	if [ -n "${dir}" -a -d "${dir}" ]; then
 		echo "Populating ${lbl} from ${dir}"
 		cd "${dir}"
 		find . -print | grep -Ev '/(CVS|\.svn|\.hg|\.git)' | cpio -dumpv ${mnt}
 	fi
 	df -i ${mnt}
 	nano_umount ${mnt}
 )
 
 populate_cfg_slice ( ) (
 	populate_slice "$1" "$2" "$3" "$4"
 )
 
 populate_data_slice ( ) (
 	populate_slice "$1" "$2" "$3" "$4"
 )
 
 create_diskimage ( ) (
 	pprint 2 "build diskimage"
 	pprint 3 "log: ${NANO_OBJ}/_.di"
 
 	(
 	echo $NANO_MEDIASIZE $NANO_IMAGES \
 		$NANO_SECTS $NANO_HEADS \
 		$NANO_CODESIZE $NANO_CONFSIZE $NANO_DATASIZE |
 	awk '
 	{
 		printf "# %s\n", $0
 
 		# size of cylinder in sectors
 		cs = $3 * $4
 
 		# number of full cylinders on media
 		cyl = int ($1 / cs)
 
 		# output fdisk geometry spec, truncate cyls to 1023
 		if (cyl <= 1023)
 			print "g c" cyl " h" $4 " s" $3
 		else
 			print "g c" 1023 " h" $4 " s" $3
 
 		if ($7 > 0) { 
 			# size of data partition in full cylinders
 			dsl = int (($7 + cs - 1) / cs)
 		} else {
 			dsl = 0;
 		}
 
 		# size of config partition in full cylinders
 		csl = int (($6 + cs - 1) / cs)
 
 		if ($5 == 0) {
 			# size of image partition(s) in full cylinders
 			isl = int ((cyl - dsl - csl) / $2)
 		} else {
 			isl = int (($5 + cs - 1) / cs)
 		}
 
 		# First image partition start at second track
 		print "p 1 165 " $3, isl * cs - $3
 		c = isl * cs;
 
 		# Second image partition (if any) also starts offset one 
 		# track to keep them identical.
 		if ($2 > 1) {
 			print "p 2 165 " $3 + c, isl * cs - $3
 			c += isl * cs;
 		}
 
 		# Config partition starts at cylinder boundary.
 		print "p 3 165 " c, csl * cs
 		c += csl * cs
 
 		# Data partition (if any) starts at cylinder boundary.
 		if ($7 > 0) {
 			print "p 4 165 " c, dsl * cs
 		} else if ($7 < 0 && $1 > c) {
 			print "p 4 165 " c, $1 - c
 		} else if ($1 < c) {
 			print "Disk space overcommitted by", \
 			    c - $1, "sectors" > "/dev/stderr"
 			exit 2
 		}
 
 		# Force slice 1 to be marked active. This is necessary
 		# for booting the image from a USB device to work.
 		print "a 1"
 	}
 	' > ${NANO_OBJ}/_.fdisk
 
 	IMG=${NANO_DISKIMGDIR}/${NANO_IMGNAME}
 	MNT=${NANO_OBJ}/_.mnt
 	mkdir -p ${MNT}
 
 	if [ "${NANO_MD_BACKING}" = "swap" ] ; then
 		MD=`mdconfig -a -t swap -s ${NANO_MEDIASIZE} -x ${NANO_SECTS} \
 			-y ${NANO_HEADS}`
 	else
 		echo "Creating md backing file..."
 		rm -f ${IMG}
 		dd if=/dev/zero of=${IMG} seek=${NANO_MEDIASIZE} count=0
 		MD=`mdconfig -a -t vnode -f ${IMG} -x ${NANO_SECTS} \
 			-y ${NANO_HEADS}`
 	fi
 
 	trap "echo 'Running exit trap code' ; df -i ${MNT} ; nano_umount ${MNT} || true ; mdconfig -d -u $MD" 1 2 15 EXIT
 
 	fdisk -i -f ${NANO_OBJ}/_.fdisk ${MD}
 	fdisk ${MD}
 	# XXX: params
 	# XXX: pick up cached boot* files, they may not be in image anymore.
 	if [ -f ${NANO_WORLDDIR}/${NANO_BOOTLOADER} ]; then
 		boot0cfg -B -b ${NANO_WORLDDIR}/${NANO_BOOTLOADER} ${NANO_BOOT0CFG} ${MD}
 	fi
 	if [ -f ${NANO_WORLDDIR}/boot/boot ]; then
 		bsdlabel -w -B -b ${NANO_WORLDDIR}/boot/boot ${MD}${NANO_SLICE_ROOT}
 	else
 		bsdlabel -w ${MD}${NANO_SLICE_ROOT}
 	fi
 	bsdlabel ${MD}${NANO_SLICE_ROOT}
 
 	# Create first image
 	populate_slice /dev/${MD}${NANO_SLICE_ROOT}a ${NANO_WORLDDIR} ${MNT} "${NANO_SLICE_ROOT}a"
 	mount /dev/${MD}${NANO_SLICE_ROOT}a ${MNT}
 	echo "Generating mtree..."
 	( cd "${MNT}" && mtree -c ) > ${NANO_OBJ}/_.mtree
 	( cd "${MNT}" && du -k ) > ${NANO_OBJ}/_.du
 	nano_umount "${MNT}"
 
 	if [ $NANO_IMAGES -gt 1 -a $NANO_INIT_IMG2 -gt 0 ] ; then
 		# Duplicate to second image (if present)
 		echo "Duplicating to second image..."
 		dd conv=sparse if=/dev/${MD}${NANO_SLICE_ROOT} of=/dev/${MD}${NANO_SLICE_ALTROOT} bs=64k
 		mount /dev/${MD}${NANO_SLICE_ALTROOT}a ${MNT}
 		for f in ${MNT}/etc/fstab ${MNT}/conf/base/etc/fstab
 		do
 			sed -i "" "s=${NANO_DRIVE}${NANO_SLICE_ROOT}=${NANO_DRIVE}${NANO_SLICE_ALTROOT}=g" $f
 		done
 		nano_umount ${MNT}
 		# Override the label from the first partition so we
 		# don't confuse glabel with duplicates.
 		if [ -n "${NANO_LABEL}" ]; then
 			tunefs -L ${NANO_LABEL}"${NANO_SLICE_ALTROOT}a" /dev/${MD}${NANO_SLICE_ALTROOT}a
 		fi
 	fi
 	
 	# Create Config slice
 	populate_cfg_slice /dev/${MD}${NANO_SLICE_CFG} "${NANO_CFGDIR}" ${MNT} "${NANO_SLICE_CFG}"
 
 	# Create Data slice, if any.
 	if [ -n "$NANO_SLICE_DATA" -a "$NANO_SLICE_CFG" = "$NANO_SLICE_DATA" -a \
 	   "$NANO_DATASIZE" -ne 0 ]; then
 		pprint 2 "NANO_SLICE_DATA is the same as NANO_SLICE_CFG, fix."
 		exit 2
 	fi
 	if [ $NANO_DATASIZE -ne 0 -a -n "$NANO_SLICE_DATA" ] ; then
 		populate_data_slice /dev/${MD}${NANO_SLICE_DATA} "${NANO_DATADIR}" ${MNT} "${NANO_SLICE_DATA}"
 	fi
 
 	if [ "${NANO_MD_BACKING}" = "swap" ] ; then
 		if [ ${NANO_IMAGE_MBRONLY} ]; then
 			echo "Writing out _.disk.mbr..."
 			dd if=/dev/${MD} of=${NANO_DISKIMGDIR}/_.disk.mbr bs=512 count=1
 		else
 			echo "Writing out ${NANO_IMGNAME}..."
 			dd if=/dev/${MD} of=${IMG} bs=64k
 		fi
 
 		echo "Writing out ${NANO_IMGNAME}..."
 		dd conv=sparse if=/dev/${MD} of=${IMG} bs=64k
 	fi
 
 	if ${do_copyout_partition} ; then
 		echo "Writing out _.disk.image..."
 		dd conv=sparse if=/dev/${MD}${NANO_SLICE_ROOT} of=${NANO_DISKIMGDIR}/_.disk.image bs=64k
 	fi
 	mdconfig -d -u $MD
 
 	trap - 1 2 15
 	trap nano_cleanup EXIT
 
 	) > ${NANO_OBJ}/_.di 2>&1
 )
 
 last_orders ( ) (
 	# Redefine this function with any last orders you may have
 	# after the build completed, for instance to copy the finished
 	# image to a more convenient place:
 	# cp ${NANO_DISKIMGDIR}/_.disk.image /home/ftp/pub/nanobsd.disk
 	true
 )
 
 #######################################################################
 #
 # Optional convenience functions.
 #
 #######################################################################
 
 #######################################################################
 # Common Flash device geometries
 #
 
 FlashDevice ( ) {
 	if [ -d ${NANO_TOOLS} ] ; then
 		. ${NANO_TOOLS}/FlashDevice.sub
 	else
 		. ${NANO_SRC}/${NANO_TOOLS}/FlashDevice.sub
 	fi
 	sub_FlashDevice $1 $2
 }
 
 #######################################################################
 # USB device geometries
 #
 # Usage:
 #	UsbDevice Generic 1000	# a generic flash key sold as having 1GB
 #
 # This function will set NANO_MEDIASIZE, NANO_HEADS and NANO_SECTS for you.
 #
 # Note that the capacity of a flash key is usually advertised in MB or
 # GB, *not* MiB/GiB. As such, the precise number of cylinders available
 # for C/H/S geometry may vary depending on the actual flash geometry.
 #
 # The following generic device layouts are understood:
 #  generic           An alias for generic-hdd.
 #  generic-hdd       255H 63S/T xxxxC with no MBR restrictions.
 #  generic-fdd       64H 32S/T xxxxC with no MBR restrictions.
 #
 # The generic-hdd device is preferred for flash devices larger than 1GB.
 #
 
 UsbDevice ( ) {
 	a1=`echo $1 | tr '[:upper:]' '[:lower:]'`
 	case $a1 in
 	generic-fdd)
 		NANO_HEADS=64
 		NANO_SECTS=32
 		NANO_MEDIASIZE=$(( $2 * 1000 * 1000 / 512 ))
 		;;
 	generic|generic-hdd)
 		NANO_HEADS=255
 		NANO_SECTS=63
 		NANO_MEDIASIZE=$(( $2 * 1000 * 1000 / 512 ))
 		;;
 	*)
 		echo "Unknown USB flash device"
 		exit 2
 		;;
 	esac
 }
 
 #######################################################################
 # Setup serial console
 
 cust_comconsole ( ) (
 	# Enable getty on console
 	sed -i "" -e /tty[du]0/s/off/on/ ${NANO_WORLDDIR}/etc/ttys
 
 	# Disable getty on syscons devices
 	sed -i "" -e '/^ttyv[0-8]/s/	on/	off/' ${NANO_WORLDDIR}/etc/ttys
 
 	# Tell loader to use serial console early.
 	echo "${NANO_BOOT2CFG}" > ${NANO_WORLDDIR}/boot.config
 )
 
 #######################################################################
 # Allow root login via ssh
 
 cust_allow_ssh_root ( ) (
 	sed -i "" -e '/PermitRootLogin/s/.*/PermitRootLogin yes/' \
 	    ${NANO_WORLDDIR}/etc/ssh/sshd_config
 )
 
 #######################################################################
 # Install the stuff under ./Files
 
 cust_install_files ( ) (
 	cd "${NANO_TOOLS}/Files"
 	find . -print | grep -Ev '/(CVS|\.svn|\.hg|\.git)' | cpio -Ldumpv ${NANO_WORLDDIR}
 )
 
 #######################################################################
 # Install packages from ${NANO_PACKAGE_DIR}
 
 cust_pkgng ( ) (
 
 	# If the package directory doesn't exist, we're done.
 	if [ ! -d ${NANO_PACKAGE_DIR} ]; then
 		echo "DONE 0 packages"
 		return 0
 	fi
 
 	# Find a pkg-* package
 	for x in `find -s ${NANO_PACKAGE_DIR} -iname 'pkg-*'`; do
 		_NANO_PKG_PACKAGE=`basename "$x"`
 	done
 	if [ -z "${_NANO_PKG_PACKAGE}" -o ! -f "${NANO_PACKAGE_DIR}/${_NANO_PKG_PACKAGE}" ]; then
 		echo "FAILED: need a pkg/ package for bootstrapping"
 		exit 2
 	fi
 
 	# Copy packages into chroot
 	mkdir -p ${NANO_WORLDDIR}/Pkg
 	(
 		cd "${NANO_PACKAGE_DIR}"
 		find "${NANO_PACKAGE_LIST}" -print |
 		cpio -Ldumpv ${NANO_WORLDDIR}/Pkg
 	)
 
 	#Bootstrap pkg
 	CR env ASSUME_ALWAYS_YES=YES SIGNATURE_TYPE=none /usr/sbin/pkg add /Pkg/${_NANO_PKG_PACKAGE}
 	CR pkg -N >/dev/null 2>&1
 	if [ "$?" -ne "0" ]; then
 		echo "FAILED: pkg bootstrapping faied"
 		exit 2
 	fi
 	rm -f ${NANO_WORLDDIR}/Pkg/pkg-*
 
 	# Count & report how many we have to install
 	todo=`ls ${NANO_WORLDDIR}/Pkg | /usr/bin/wc -l`
 	todo=$(expr $todo + 1) # add one for pkg since it is installed already
 	echo "=== TODO: $todo"
 	ls ${NANO_WORLDDIR}/Pkg
 	echo "==="
 	while true
 	do
 		# Record how many we have now
  		have=$(CR env ASSUME_ALWAYS_YES=YES /usr/sbin/pkg info | /usr/bin/wc -l)
 
 		# Attempt to install more packages
 		CR0 'ls 'Pkg/*txz' | xargs env ASSUME_ALWAYS_YES=YES /usr/sbin/pkg add'
 
 		# See what that got us
  		now=$(CR env ASSUME_ALWAYS_YES=YES /usr/sbin/pkg info | /usr/bin/wc -l)
 		echo "=== NOW $now"
 		CR env ASSUME_ALWAYS_YES=YES /usr/sbin/pkg info
 		echo "==="
 		if [ $now -eq $todo ] ; then
 			echo "DONE $now packages"
 			break
 		elif [ $now -eq $have ] ; then
 			echo "FAILED: Nothing happened on this pass"
 			exit 2
 		fi
 	done
 	rm -rf ${NANO_WORLDDIR}/Pkg
 )
 
 #######################################################################
 # Convenience function:
 # 	Register all args as customize function.
 
 customize_cmd ( ) {
 	NANO_CUSTOMIZE="$NANO_CUSTOMIZE $*"
 }
 
 #######################################################################
 # Convenience function:
 # 	Register all args as late customize function to run just before
 #	image creation.
 
 late_customize_cmd ( ) {
 	NANO_LATE_CUSTOMIZE="$NANO_LATE_CUSTOMIZE $*"
 }
 
 #######################################################################
 #
 # All set up to go...
 #
 #######################################################################
 
 # Progress Print
 #	Print $2 at level $1.
 pprint ( ) (
     if [ "$1" -le $PPLEVEL ]; then
 	runtime=$(( `date +%s` - $NANO_STARTTIME ))
 	printf "%s %.${1}s %s\n" "`date -u -r $runtime +%H:%M:%S`" "#####" "$2" 1>&3
     fi
 )
 
 usage ( ) {
 	(
 	echo "Usage: $0 [-bfiKknqvw] [-c config_file]"
 	echo "	-b	suppress builds (both kernel and world)"
 	echo "	-c	specify config file"
 	echo "	-f	suppress code slice extraction"
 	echo "	-i	suppress disk image build"
 	echo "	-K	suppress installkernel"
 	echo "	-k	suppress buildkernel"
 	echo "	-n	add -DNO_CLEAN to buildworld, buildkernel, etc"
 	echo "	-q	make output more quiet"
 	echo "	-v	make output more verbose"
 	echo "	-w	suppress buildworld"
 	) 1>&2
 	exit 2
 }
 
 #######################################################################
 # Setup and Export Internal variables
 #
 
 export_var ( ) {		# Don't wawnt a subshell
 	var=$1
 	# Lookup value of the variable.
 	eval val=\$$var
 	pprint 3 "Setting variable: $var=\"$val\""
 	export $1
 }
 
 # Call this function to set defaults _after_ parsing options.
 # dont want a subshell otherwise variable setting is thrown away.
 set_defaults_and_export ( ) {
 	: ${NANO_OBJ:=/usr/obj/nanobsd.${NANO_NAME}}
 	: ${MAKEOBJDIRPREFIX:=${NANO_OBJ}}
 	: ${NANO_DISKIMGDIR:=${NANO_OBJ}}
 	NANO_WORLDDIR=${NANO_OBJ}/_.w
 	NANO_MAKE_CONF_BUILD=${MAKEOBJDIRPREFIX}/make.conf.build
 	NANO_MAKE_CONF_INSTALL=${NANO_OBJ}/make.conf.install
 
 	# Override user's NANO_DRIVE if they specified a NANO_LABEL
 	[ -n "${NANO_LABEL}" ] && NANO_DRIVE="ufs/${NANO_LABEL}" || true
 
 	# Set a default NANO_TOOLS to NANO_SRC/NANO_TOOLS if it exists.
 	[ ! -d "${NANO_TOOLS}" ] && [ -d "${NANO_SRC}/${NANO_TOOLS}" ] && \
 		NANO_TOOLS="${NANO_SRC}/${NANO_TOOLS}" || true
 
 	[ -n "${NANO_NOPRIV_BUILD}" ] && [ -z "${NANO_METALOG}" ] && \
 		NANO_METALOG=${NANO_OBJ}/_.metalog || true
 
 	NANO_STARTTIME=`date +%s`
 	pprint 3 "Exporting NanoBSD variables"
 	export_var MAKEOBJDIRPREFIX
 	export_var NANO_ARCH
 	export_var NANO_CODESIZE
 	export_var NANO_CONFSIZE
 	export_var NANO_CUSTOMIZE
 	export_var NANO_DATASIZE
 	export_var NANO_DRIVE
 	export_var NANO_HEADS
 	export_var NANO_IMAGES
 	export_var NANO_IMGNAME
 	export_var NANO_MAKE
 	export_var NANO_MAKE_CONF_BUILD
 	export_var NANO_MAKE_CONF_INSTALL
 	export_var NANO_MEDIASIZE
 	export_var NANO_NAME
 	export_var NANO_NEWFS
 	export_var NANO_OBJ
 	export_var NANO_PMAKE
 	export_var NANO_SECTS
 	export_var NANO_SRC
 	export_var NANO_TOOLS
 	export_var NANO_WORLDDIR
 	export_var NANO_BOOT0CFG
 	export_var NANO_BOOTLOADER
 	export_var NANO_LABEL
 	export_var NANO_MODULES
 	export_var NANO_NOPRIV_BUILD
 	export_var NANO_METALOG
 	export_var SRCCONF
 	export_var SRC_ENV_CONF
 }