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livecd-rootfs/live-build/lb_binary_layered

126 lines
3.3 KiB

#!/bin/sh
## live-build(7) - System Build Scripts
## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
set -e
# Including common functions
( . "${LIVE_BUILD}/scripts/build.sh" > /dev/null 2>&1 || true ) || . /usr/lib/live/build.sh
# Automatically populating config tree
if [ -x auto/config ] && [ ! -e .build/config ]
then
Echo_message "Automatically populating config tree."
lb config
fi
# Setting static variables
DESCRIPTION="$(Echo 'build binary images')"
HELP=""
USAGE="${PROGRAM} [--force]"
Arguments "${@}"
# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
Set_defaults
# Setup cleanup function
Setup_cleanup
. config/functions
build_layered_squashfs() {
local pass=$1 # install|install_subpass|install_subpass_subsubpass|…
local prevpass=$2 # install|install_subpass|…
local prefix=$3 # 01-|02-|…
local lowerlayers=$4
shift 4 # restore ${*}
# Cleanup root filesystem
lb binary_chroot ${*}
# Building squashfs filesystem & manifest
base="${PWD}/livecd.${PROJECT}.${prefix}${pass}"
squashfs_f="${base}.squashfs"
# We have already treated that pass
if [ -f "${squashfs_f}" ]; then
return
fi
if [ -n "${lowerlayers}" ]; then
mount_overlay ${lowerlayers} "chroot.${pass}/" chroot/
else
# first pass
rmdir chroot||true
ln -s "chroot.${pass}/" chroot
fi
# Full manifest until that PASS
squashfs_f_manifest="${base}.manifest"
create_manifest "chroot" "${squashfs_f_manifest}.full"
# Delta manifest
diff -NU0 ${PWD}/livecd.${PROJECT}.[0-9]{2..2}-${prevpass}.manifest.full ${squashfs_f_manifest}.full|grep -v ^@ > $squashfs_f_manifest
squashfs_f_size="${base}.size"
du -B 1 -s "chroot.${pass}/" | cut -f1 > "${squashfs_f_size}"
(cd "chroot.${pass}/" &&
mksquashfs . ${squashfs_f} \
-no-progress -xattrs -comp xz )
if [ -n "${lowerlayers}" ]; then
umount chroot
else
rm chroot
mkdir chroot/
fi
# Handle direct sublayer of current one
# Extract the name of the pass corresponding to the sublayer
for subpass in $(ls -d chroot.${pass}_* 2>/dev/null | sed -e "s/chroot\.\(${pass}_[^_]\+\).*/\1/"); do
lowerlayers_for_subpass="chroot.${pass}:${lowerlayers}"
lowerlayers_for_subpass="${lowerlayers_for_subpass%:}"
build_layered_squashfs "${subpass}" "${pass}" "${prefix}" "${lowerlayers_for_subpass}" ${*}
done
}
CURPASS=1
PREVPASS=""
PASSPREFIX=""
LOWER_LAYERS=""
for _PASS in $PASSES
do
PASSPREFIX="$(printf "%02g" $CURPASS)-"
build_layered_squashfs "${_PASS}" "${PREVPASS}" "$PASSPREFIX" "${LOWER_LAYERS}" ${*}
LOWER_LAYERS="chroot.${_PASS}:$LOWER_LAYERS"
LOWER_LAYERS="${LOWER_LAYERS%:}"
PREVPASS=${_PASS}
CURPASS=$(( CURPASS + 1 ))
done
# remount last "main" pass on chroot for lb binary
mount_overlay "${LOWER_LAYERS}" "chroot.${_PASS}/" chroot/
# Prepare initrd + kernel
lb binary_linux-image ${*}
umount chroot/
# Full ISO manifest & size from last main PASS
PREFIX="livecd.$PROJECT${SUBARCH:+-$SUBARCH}"
cp "livecd.${PROJECT}.${PASSPREFIX}${_PASS}.size" "$PREFIX.size"
cp "livecd.${PROJECT}.${PASSPREFIX}${_PASS}.manifest.full" "$PREFIX.manifest"
chmod 644 *.squashfs *.manifest *.manifest.full *.size