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https://git.launchpad.net/livecd-rootfs
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133 lines
3.7 KiB
Bash
Executable File
133 lines
3.7 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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build_layered_squashfs() {
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local pass=$1 # install|install_subpass|install_subpass_subsubpass|…
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local prevpass=$2 # install|install_subpass|…
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local prefix=$3 # 01-|02-|…
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local lowerlayers=$4
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shift 4 # restore ${*}
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# Cleanup root filesystem
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lb binary_chroot ${*}
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# Building squashfs filesystem & manifest
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base="${PWD}/livecd.${PROJECT}.${prefix}${pass}"
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squashfs_f="${base}.squashfs"
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# We have already treated that pass
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if [ -f "${squashfs_f}" ]; then
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return
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fi
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if [ -n "${lowerlayers}" ]; then
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mount_overlay ${lowerlayers} "overlay.${pass}/" chroot/
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else
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# first pass
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rmdir chroot 2>/dev/null||true
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ln -s "overlay.${pass}/" chroot
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fi
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# Full manifest until that PASS
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squashfs_f_manifest="${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}.[0-9][0-9]-${prevpass}.manifest.full ${squashfs_f_manifest}.full|grep -v ^@ > $squashfs_f_manifest
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squashfs_f_size="${base}.size"
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du -B 1 -s "overlay.${pass}/" | cut -f1 > "${squashfs_f_size}"
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(cd "overlay.${pass}/" &&
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mksquashfs . ${squashfs_f} \
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-no-progress -xattrs -comp xz )
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if [ -n "${lowerlayers}" ]; then
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umount chroot
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else
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rm chroot
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mkdir chroot/
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fi
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# Handle direct sublayer of current one
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# Extract the name of the pass corresponding to the sublayer
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for subpass in $(ls -d overlay.${pass}_* 2>/dev/null | sed -e "s/overlay\.\(${pass}_[^_]\+\).*/\1/"); do
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lowerlayers_for_subpass="overlay.${pass}:${lowerlayers}"
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lowerlayers_for_subpass="${lowerlayers_for_subpass%:}"
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build_layered_squashfs "${subpass}" "${pass}" "${prefix}" "${lowerlayers_for_subpass}" ${*}
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done
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}
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CURPASS=1
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PREVPASS=""
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PASSPREFIX=""
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LOWER_LAYERS=""
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for _PASS in $PASSES
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do
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PASSPREFIX="$(printf "%02g" $CURPASS)-"
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build_layered_squashfs "${_PASS}" "${PREVPASS}" "$PASSPREFIX" "${LOWER_LAYERS}" ${*}
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LOWER_LAYERS="overlay.${_PASS}:$LOWER_LAYERS"
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LOWER_LAYERS="${LOWER_LAYERS%:}"
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PREVPASS=${_PASS}
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CURPASS=$(( CURPASS + 1 ))
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done
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# remount last "main" pass on chroot for lb binary
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mount_overlay "${LOWER_LAYERS}" "overlay.${_PASS}/" chroot/
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# Prepare initrd + kernel
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lb binary_linux-image ${*}
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umount chroot/
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# Full ISO manifest & size from last main PASS
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PREFIX="livecd.$PROJECT${SUBARCH:+-$SUBARCH}"
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cp "livecd.${PROJECT}.${PASSPREFIX}${_PASS}.size" "$PREFIX.size"
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cp "livecd.${PROJECT}.${PASSPREFIX}${_PASS}.manifest.full" "$PREFIX.manifest"
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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}.[0-9][0-9]-live.manifest.full 2>/dev/null)" ] && \
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[ -n "$(ls livecd.${PROJECT}.[0-9][0-9]-install.manifest.full 2>/dev/null)" ]; then
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echo "$(diff livecd.${PROJECT}.[0-9][0-9]-live.manifest.full livecd.${PROJECT}.[0-9][0-9]-install.manifest.full | awk '/^< / { print $2 }')" > livecd.${PROJECT}-manifest-remove
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fi
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chmod 644 *.squashfs *.manifest* *.size
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