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296 lines
8.0 KiB
Bash
Executable File
296 lines
8.0 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_NO_VALIDATE_SEED=1 snap_preseed chroot "${snap}"
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done < $snaplist_file
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snap_validate_seed chroot
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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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if $(is_live_layer $pass); then
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lb chroot_hacks ${*}
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fi
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lb chroot_interactive ${*}
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# Misc ubuntu cleanup and post-layer configuration
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/usr/share/livecd-rootfs/minimize-manual chroot
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clean_debian_chroot
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Chroot chroot "dpkg-query -W" > chroot.packages.${pass}
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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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# Restore update-initramfs, if necessary
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if $(is_root_layer $pass); then
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undivert_update_initramfs
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fi
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# Restore grub
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undivert_grub chroot
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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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