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230 lines
7.2 KiB
Bash
Executable File
230 lines
7.2 KiB
Bash
Executable File
#!/bin/sh
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## live-build(7) - System Build Scripts
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## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
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##
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## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
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## This is free software, and you are welcome to redistribute it
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## under certain conditions; see COPYING for details.
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set -e
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# Including common functions
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( . "${LIVE_BUILD}/scripts/build.sh" > /dev/null 2>&1 || true ) || . /usr/lib/live/build.sh
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# Automatically populating config tree
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if [ -x auto/config ] && [ ! -e .build/config ]
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then
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Echo_message "Automatically populating config tree."
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lb config
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fi
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# Setting static variables
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DESCRIPTION="$(Echo 'build binary images')"
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HELP=""
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USAGE="${PROGRAM} [--force]"
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Arguments "${@}"
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# Reading configuration files
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Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
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Set_defaults
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# Setup cleanup function
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Setup_cleanup
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. config/functions
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lb_binary_includes () {
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# Copying includes from pass subdirectory
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local pass="$1"
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if [ ! -d config/includes.binary.${pass} ]; then
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return
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fi
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cd config/includes.binary.${pass}
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find . | cpio -dmpu --no-preserve-owner "${OLDPWD}"/chroot
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cd "${OLDPWD}"
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}
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build_layered_squashfs () {
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local pass=$1
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shift 1 # restore ${*}
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Echo_message "lb_binary_layered: treating pass $pass"
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# Per convention, we include the subarch name next to the project
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PROJECT_FULL=$PROJECT${SUBARCH:+-$SUBARCH}
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# Building squashfs filesystem & manifest
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local overlay_dir="overlay.${pass}"
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base="${PWD}/livecd.${PROJECT_FULL}.${pass}"
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squashfs_f="${base}.squashfs"
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# We have already treated that pass
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if [ -f "${squashfs_f}" ]; then
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return
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fi
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rm -f .build/binary_chroot .build/binary_hooks
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mkdir -p "$overlay_dir/"
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lowerdirs=$(get_lowerdirs_for_pass $pass)
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if [ -n "$lowerdirs" ]; then
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mkdir -p chroot/
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mount_overlay "$lowerdirs" "$overlay_dir" chroot/
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else
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ln -s "$overlay_dir/" chroot
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fi
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export PASS=${pass}
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setenv_file PASS "${pass}" config/environment.chroot
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# Cleanup root filesystem
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lb binary_chroot ${*}
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lb_binary_includes $pass ${*}
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lb binary_hooks ${*}
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# Copy initrd and vmlinuz outside of chroot and remove them from the layer squashfs
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if $(is_live_layer "$pass"); then
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lb binary_linux-image ${*}
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rm -f chroot/boot/initrd.img-* chroot/boot/vmlinu{x,z}-*
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fi
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make_squashfs=yes
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ppass="${pass}"
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while :; do
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for nsp in ${NO_SQUASHFS_PASSES}; do
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if [ "${ppass}" = "${nsp}" ]; then
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make_squashfs=no
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break 2
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fi
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done
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ppass="$(get_parent_pass "${ppass}")"
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if [ -z "${ppass}" ]; then
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break
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fi
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done
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if [ $make_squashfs = yes ]; then
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# Full manifest until that PASS
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squashfs_f_manifest="${base}.manifest"
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create_manifest "chroot" "${squashfs_f_manifest}.full"
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# Delta manifest
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diff -NU0 ${PWD}/livecd.${PROJECT_FULL}.$(get_parent_pass $pass).manifest.full ${squashfs_f_manifest}.full|grep -v ^@ > $squashfs_f_manifest || true
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echo "Delta manifest:"
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cat $squashfs_f_manifest
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squashfs_f_size="${base}.size"
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du -B 1 -s "overlay.${pass}/" | cut -f1 > "${squashfs_f_size}"
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# We take first live pass for "global" ISO properties (used by installers and checkers):
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# Prepare initrd + kernel
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# Main manifest and size files
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prefix="livecd.$PROJECT_FULL"
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if [ ! -e "${prefix}.manifest" ] && $(is_live_layer "$pass"); then
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totalsize=$(cat ${squashfs_f_size})
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curpass="$pass"
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while :; do
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curpass=$(get_parent_pass $curpass)
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# We climbed up the tree to the root layer, we are done
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[ -z "$curpass" ] && break
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totalsize=$(expr $totalsize + $(cat "${PWD}/livecd.${PROJECT_FULL}.${curpass}.size"))
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done
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echo ${totalsize} > "${prefix}.size"
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cp "${squashfs_f_manifest}.full" "${prefix}.manifest"
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fi
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if [ -n "$lowerdirs" ]; then
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# Although the current chroot was created as an overlay over
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# the previous layer, many operations can result in redundant
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# files in the upperdir. Rather than trying to minimize the
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# overlay by hand, we rsync the chroot into a fresh overlay,
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# rely on rsyncs ability to avoid redundant file operations,
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# and take _that_ overlay's upperdir as the content of the
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# layer.
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mkdir -p chroot-2 "$overlay_dir-2"
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mount_overlay "$lowerdirs" "$overlay_dir-2" chroot-2
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# rsync takes many, many options. The subset
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# we pass here is quite important:
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# -a is standard to operate in the basic way required here.
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# -X to preserve xattrs
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# -H to preserve hardlinks
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# -A to preserve ACLs
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# -S to preserve sparseness
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# --checksum to skip copies based on the content of the file
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# (rather than the default which is to skip copies based
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# on size + mtime)
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# --no-times to not copy mtimes from source to dest (we
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# do care about mtime in the image but want to
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# deduplicate files that have indentical contents but
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# different mtimes, and mtime will be fixed below)
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# --del because we want to remove files that have been
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# deleted in this layer.
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rsync -aXHAS --checksum --no-times --del chroot/ chroot-2/
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umount chroot-2
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rmdir chroot-2
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overlay_dir="$overlay_dir-2"
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# We use rsync with --no-times rsync (see above)
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# for the absolute best size reduction. But there are
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# cases where we want mtime preservation to match what
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# was found in the original archive packages, such as
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# keeping .py mtime in sync with the matching .pyc.
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# Operate on the upperdir directly, so that we are only
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# modifying mtime on files that are actually changed in
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# this layer. LP: #2107332
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/usr/share/livecd-rootfs/sync-mtime chroot "$overlay_dir"
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fi
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create_squashfs "${overlay_dir}" ${squashfs_f}
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if [ -f config/$pass.catalog-in.yaml ]; then
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echo "Expanding catalog entry template for $pass"
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usc_opts="--output livecd.${PROJECT_FULL}.install-sources.yaml \
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--template config/$pass.catalog-in.yaml \
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--size $(du -B 1 -s chroot/ | cut -f1) --squashfs ${pass}.squashfs \
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--translations config/catalog-translations"
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if [ -f config/seeded-languages ]; then
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usc_opts="$usc_opts --langs $(cat config/seeded-languages)"
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fi
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/usr/share/livecd-rootfs/update-source-catalog source $usc_opts
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else
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echo "No catalog entry template for $pass"
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fi
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fi
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if [ -n "$lowerdirs" ]; then
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umount chroot
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rmdir chroot
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else
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rm chroot
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fi
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}
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for _PASS in $PASSES
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do
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build_layered_squashfs "${_PASS}" ${*}
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done
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if [ -n "$DEFAULT_KERNEL" -a -f livecd.${PROJECT_FULL}.install-sources.yaml ]; then
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write_kernel_yaml "$DEFAULT_KERNEL" "$BRIDGE_KERNEL_REASONS"
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/usr/share/livecd-rootfs/update-source-catalog merge \
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--output livecd.${PROJECT_FULL}.install-sources.yaml \
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--template config/kernel.yaml
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fi
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# Ubiquity-compatible removal manifest for ISO not using a layered-aware installer
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if [ -n "$(ls livecd.${PROJECT_FULL}.*install.live.manifest.full 2>/dev/null)" ] && \
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[ -n "$(ls livecd.${PROJECT_FULL}.*install.manifest.full 2>/dev/null)" ]; then
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echo "$(diff livecd.${PROJECT_FULL}.*install.live.manifest.full livecd.${PROJECT_FULL}.*install.manifest.full | awk '/^< / { print $2 }')" > livecd.${PROJECT_FULL}-manifest-remove
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fi
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chmod 644 *.squashfs *.manifest* *.size
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