142 lines
4.8 KiB
Diff
142 lines
4.8 KiB
Diff
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From 9a6b40f023db3763694fb99a820f11017cc56811 Mon Sep 17 00:00:00 2001
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From: Kairui Song <kasong@redhat.com>
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Date: Tue, 9 Jun 2020 00:41:24 +0800
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Subject: [PATCH] 99squash: simplify the code
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The new dracutsysrootdir could be used to replace the shell function
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required_in_root, so drop it and also simplify the code.
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Signed-off-by: Kairui Song <kasong@redhat.com>
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(cherry picked from commit 4159819fbb20fca8c0a80ddb17e211f481ec7717)
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Resolves: #1959336
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---
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dracut.sh | 89 ++++++++++++++-------------------------------------------------
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1 file changed, 20 insertions(+), 69 deletions(-)
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diff --git a/dracut.sh b/dracut.sh
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index b9657dc6..176b2259 100755
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--- a/dracut.sh
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+++ b/dracut.sh
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@@ -1736,23 +1736,19 @@ fi
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if dracut_module_included "squash"; then
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dinfo "*** Install squash loader ***"
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- if ! check_kernel_config CONFIG_SQUASHFS; then
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- dfatal "CONFIG_SQUASHFS have to be enabled for dracut squash module to work"
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- exit 1
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- fi
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- if ! check_kernel_config CONFIG_OVERLAY_FS; then
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- dfatal "CONFIG_OVERLAY_FS have to be enabled for dracut squash module to work"
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- exit 1
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- fi
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- if ! check_kernel_config CONFIG_DEVTMPFS; then
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- dfatal "CONFIG_DEVTMPFS have to be enabled for dracut squash module to work"
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+ for config in \
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+ CONFIG_SQUASHFS \
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+ CONFIG_OVERLAY_FS \
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+ CONFIG_DEVTMPFS;
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+ do
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+ if ! check_kernel_config $config; then
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+ dfatal "$config have to be enabled for dracut squash module to work"
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exit 1
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- fi
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+ fi
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+ done
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readonly squash_dir="$initdir/squash/root"
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- readonly squash_img=$initdir/squash/root.img
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-
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- # Currently only move "usr" "etc" to squashdir
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+ readonly squash_img="$initdir/squash/root.img"
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readonly squash_candidate=( "usr" "etc" )
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mkdir -m 0755 -p $squash_dir
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@@ -1763,57 +1759,15 @@ if dracut_module_included "squash"; then
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# Move some files out side of the squash image, including:
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# - Files required to boot and mount the squashfs image
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# - Files need to be accessible without mounting the squash image
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- required_in_root() {
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- local file=$1
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- local _sqsh_file=$squash_dir/$file
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- local _init_file=$initdir/$file
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-
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- if [[ -e $_init_file ]]; then
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- return
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- fi
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-
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- if [[ ! -e $_sqsh_file ]] && [[ ! -L $_sqsh_file ]]; then
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- derror "$file is required to boot a squashed initramfs but it's not installed!"
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- return
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- fi
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-
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- if [[ ! -d $(dirname $_init_file) ]]; then
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- required_in_root $(dirname $file)
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- fi
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-
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- if [[ -L $_sqsh_file ]]; then
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- cp --preserve=all -P $_sqsh_file $_init_file
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- _sqsh_file=$(realpath $_sqsh_file 2>/dev/null)
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- if [[ -e $_sqsh_file ]] && [[ "$_sqsh_file" == "$squash_dir"* ]]; then
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- # Relative symlink
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- required_in_root ${_sqsh_file#$squash_dir/}
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- return
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- fi
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- if [[ -e $squash_dir$_sqsh_file ]]; then
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- # Absolute symlink
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- required_in_root ${_sqsh_file#/}
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- return
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- fi
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- required_in_root ${module_spec#$squash_dir/}
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- else
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- if [[ -d $_sqsh_file ]]; then
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- mkdir $_init_file
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- else
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- mv $_sqsh_file $_init_file
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- fi
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- fi
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- }
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-
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- required_in_root etc/initrd-release
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-
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- for module_spec in $squash_dir/usr/lib/modules/*/modules.*;
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- do
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- required_in_root ${module_spec#$squash_dir/}
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- done
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-
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- for dracut_spec in $squash_dir/usr/lib/dracut/*;
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+ # - Initramfs marker
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+ for file in \
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+ $squash_dir/usr/lib/modules/*/modules.* \
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+ $squash_dir/usr/lib/dracut/* \
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+ $squash_dir/etc/initrd-release
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do
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- required_in_root ${dracut_spec#$squash_dir/}
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+ [[ -d $file ]] && continue
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+ DRACUT_RESOLVE_DEPS=1 dracutsysrootdir=$squash_dir inst ${file#$squash_dir}
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+ rm $file
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done
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mv $initdir/init $initdir/init.stock
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@@ -1824,17 +1778,14 @@ if dracut_module_included "squash"; then
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# accessible before mounting the image.
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inst_multiple "echo" "sh" "mount" "modprobe" "mkdir"
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hostonly="" instmods "loop" "squashfs" "overlay"
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-
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# Only keep systemctl outsite if we need switch root
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if [[ ! -f "$initdir/lib/dracut/no-switch-root" ]]; then
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inst "systemctl"
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fi
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+ # Remove duplicated files
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for folder in "${squash_candidate[@]}"; do
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- # Remove duplicated files in squashfs image, save some more space
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- [[ ! -d $initdir/$folder/ ]] && continue
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- for file in $(find $initdir/$folder/ -not -type d);
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- do
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+ for file in $(find $initdir/$folder/ -not -type d); do
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if [[ -e $squash_dir${file#$initdir} ]]; then
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mv $squash_dir${file#$initdir} $file
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fi
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