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38bb0b3301
grub-probe must not be called during image build so grub is diverted. In multilayer image the chroot is always the tip of the filesystem, so we divert grub at the beginning of each pass and undivdert it as the end. For flat images, it's diverted just before building the chroot and undiverted after.
287 lines
7.8 KiB
Bash
Executable File
287 lines
7.8 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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## This is a fork of lb_chroot for layered live system.
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## We don't want leaking host configuration in each layer, and so,
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## we clean and setup the chroot each time.
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## In addition, we create the squashfs for each layer, but top one (live)
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## which still can be configured after lb chroot call.
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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 'customize the Debian system')"
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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_chroot_remove_packages () {
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# Remove packages from the chroot specific to this layer
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#
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# $1: Name of the pass*
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local pass=$1
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Expand_packagelist "$(basename config/package-lists/*.removal-list.chroot_${pass})" "config/package-lists" \
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>> chroot/root/packages.chroot.removal
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Chroot chroot "xargs --arg-file=/root/packages.chroot.removal apt-get ${APT_OPTIONS} autoremove --purge"
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rm -f chroot/root/packages.chroot.removal
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}
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# Create the snap list specific to this layer
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lb_chroot_snap_lists () {
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local pass=$1
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# This assumes that the prefix is unique for a given project
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local snap_for_pass=$(ls config/package-lists/*.snaplist.chroot_${pass}.full 2>/dev/null || true)
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parent_pass=$(get_parent_pass $pass)
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local snap_for_parent_pass=$(ls config/package-lists/*.snaplist.chroot_${parent_pass}.full 2>/dev/null || true)
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if [ -z "${snap_for_pass}" ]; then
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return
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fi
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if [ -z "${snap_for_parent_pass}" ]; then
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cp ${snap_for_pass} ${snap_for_pass%.full}
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return
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fi
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# Generate a list of snaps added to a layer.
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diff -NU0 ${snap_for_parent_pass} ${snap_for_pass}|grep -Ev '^(---|\+\+\+|@@)'|cut -c2- > ${snap_for_pass%.full}
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}
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lb_chroot_install_snaps () {
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# Prepare the snap environment and install snaps into a chroot
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#
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# $1: Name of the pass
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local snaplist_file=$(ls config/package-lists/*.snaplist.chroot_${1} 2>/dev/null || true)
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if [ -z "${snaplist_file}" ]; then
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return
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fi
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snap_prepare chroot
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while read snap; do
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snap_preseed chroot "${snap}"
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done < $snaplist_file
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}
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lb_chroot_includes () {
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# Copying includes from pass subdirectory
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local pass="$1"
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if [ ! -d config/includes.chroot.${pass} ]; then
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return
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fi
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cd config/includes.chroot.${pass}
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find . | cpio -dmpu --no-preserve-owner "${OLDPWD}"/chroot
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cd "${OLDPWD}"
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}
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reduce_pass_size () {
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# Remove duplicated files between parent and current pass
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# Note the empty directories created in a child pass are not removed
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local pass=$1
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local parent="$(get_parent_pass $pass)"
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$(is_root_layer $pass) && return
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pass_dir="overlay.${pass}"
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parent_pass_dir="overlay.${parent}"
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local list_pass=$(mktemp)
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local list_parent=$(mktemp)
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(cd $pass_dir && find . ! -type d -printf "%h/%f|%s|%y|%U|%G|%m\n"|sort > $list_pass)
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(cd $parent_pass_dir && find . ! -type d -printf "%h/%f|%s|%y|%U|%G|%m\n"|sort > $list_parent)
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# Only iterate on common files with same type, owner, permission and size
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comm -12 $list_pass $list_parent|cut -d'|' -f1|while read f; do
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# If file contents are different, keep it
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if ! diff --brief --no-dereference "$pass_dir/$f" "$parent_pass_dir/$f" >/dev/null; then
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continue
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fi
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# Files are strictly identical between the 2 passes (only mod or access times differs). No need for unused delta.
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Echo_message "reduce_pass_size: '$f' is strictly identical between $parent and $pass. Removing."
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rm "$pass_dir/$f"
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done
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rm $list_pass
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rm $list_parent
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}
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create_chroot_pass () {
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local pass=$1
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shift 1 # restore ${*}
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Echo_message "lb_chroot_layered: treating pass $pass"
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# We have already treated that pass just return.
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local overlay_dir="overlay.${pass}"
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if [ -d "$overlay_dir/" ]; then
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return
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fi
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# Only get some function executed on root passes
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# Copy bootstrap on root layers
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if $(is_root_layer $pass); then
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rm -f .build/chroot_linux-image .build/chroot_preseed .build/chroot_hacks
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cp -a chroot.bootstrap/ "$overlay_dir/"
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fi
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# Others have to be executed on every pass
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rm -f .build/chroot_early_hooks .build/chroot_hooks .build/chroot_interactive
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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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# Configuring chroot
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lb chroot_devpts install ${*}
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lb chroot_proc install ${*}
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lb chroot_sysfs install ${*}
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# grub-probe should not be called as part of an image build so divert it
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divert_grub chroot
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# We run chroot_hacks only on root layers (update-initramfs diverted)
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if $(is_root_layer $pass); then
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divert_update_initramfs
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fi
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lb chroot_debianchroot install ${*}
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lb chroot_dpkg install ${*}
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lb chroot_tmpfs install ${*}
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lb chroot_hosts install ${*}
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lb chroot_resolv install ${*}
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lb chroot_hostname install ${*}
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lb chroot_apt install ${*}
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# Note: this triggers an upgrade + dist-ugprade; which may impact sublayers with more
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# diff content than desired. So only running this on root pass.
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# Only configure universe on root passes
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if $(is_root_layer $pass); then
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lb chroot_archives chroot install ${*}
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configure_universe
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fi
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# Customizing chroot
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lb chroot_linux-image ${*}
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lb chroot_preseed ${*}
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lb chroot_early_hooks ${*}
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lb chroot_package-lists ${pass} ${*}
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lb chroot_install-packages ${pass} ${*}
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lb_chroot_remove_packages ${pass} ${*}
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# Snap management
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lb_chroot_snap_lists ${pass} ${*}
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lb_chroot_install_snaps ${pass} ${*}
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configure_network_manager
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# Mark kernel headers as autoremovable
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Chroot chroot "dpkg -l linux-headers-3* linux-headers-4*" 2>/dev/null \
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| awk '/^i/ {print $2}' > chroot.headers
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for i in $(cat chroot.headers); do
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Chroot chroot "apt-mark auto $i"
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done
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Chroot chroot "apt-get --purge -y autoremove"
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# Add live packages to live layers
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for livepass in $LIVE_PASSES; do
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[ "$livepass" != "$pass" ] && continue
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lb chroot_live-packages ${*}
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break
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done
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# Run includes by pass
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lb_chroot_includes ${pass} ${*}
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lb chroot_hooks ${*}
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# Run chroot_hacks only on root layers.
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# chroot_hacks changes the mode of boot/initrd*. The side effect in
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# layered mode is to create an initrd on each layer with a significant
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# impact on image size (+30MB per layer). This is an issue even with
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# update-initramfs disabled.
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lb chroot_hacks ${*}
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lb chroot_interactive ${*}
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# Misc ubuntu cleanup and post-layer configuration
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clean_debian_chroot
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/usr/share/livecd-rootfs/minimize-manual chroot
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Chroot chroot "dpkg-query -W" > chroot.packages.${pass}
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# Restore grub
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undivert_grub chroot
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# Deconfiguring chroot
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if $(is_root_layer $pass); then
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lb chroot_archives chroot remove ${*}
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fi
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lb chroot_apt remove ${*}
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lb chroot_hostname remove ${*}
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lb chroot_resolv remove ${*}
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lb chroot_hosts remove ${*}
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lb chroot_tmpfs remove ${*}
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lb chroot_dpkg remove ${*}
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lb chroot_debianchroot remove ${*}
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lb chroot_sysfs remove ${*}
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lb chroot_proc remove ${*}
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lb chroot_devpts remove ${*}
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if [ -n "$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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reduce_pass_size $pass
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}
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if [ ! -d chroot.bootstrap/ ]; then
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mv chroot/ chroot.bootstrap/
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fi
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for _PASS in $PASSES
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do
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create_chroot_pass "$_PASS" ${*}
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done
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