Provide new change root remote building approach.

1 files changed, 45 insertions, 40 deletions

diff --git a/builder/build-initramfs.sh b/builder/build-initramfs.sh
index 6a81eccf..26293ebe 100755
--- a/builder/build-initramfs.sh
+++ b/builder/build-initramfs.sh
@@ -51,6 +51,7 @@
 #                   PATTERN. By default, grep prints the matching lines.
 
 ## region ensure presence of needed dependencies
+
 set -o errexit
 build_initramfs__needed_location="$(dirname "${BASH_SOURCE[0]}")/dnbd3-rootfs"
 if ! [[ -d "$build_initramfs__needed_location" ]]; then
@@ -71,6 +72,7 @@ if ! [[ -d "$build_initramfs__needed_location" ]]; then
     rm --recursive --force "$build_initramfs__temporary_repository_location"
 fi
 set +o errexit
+
 ## endregion
 
 source "$(dirname "${BASH_SOURCE[0]}")/dnbd3-rootfs/scripts/rebash/core.sh"
@@ -78,12 +80,15 @@ core.import exceptions
 exceptions.activate
 core.import logging
 core.import utils
+core.import change_root
+
 # endregion
 
 logging.set_commands_log_level debug
 logging.set_log_level critical
 
 # region properties
+
 build_initramfs_file_path='/boot/initramfs.img'
 build_initramfs_dracut_parameter='--force --no-hostonly'
 build_initramfs_verbose='no'
@@ -93,9 +98,13 @@ build_initramfs_create_system_image=''
 build_initramfs_cleanup='no'
 build_initramfs_dependencies=(cpio git test shift mktemp cat rm sed gzip curl \
     tar grep make gcc cmake readlink dirname dmsetup chroot qemu-nbd)
+
 # endregion
+
 # region functions
+
 ## region command line interface
+
 function build_initramfs_print_usage_message() {
     # Prints a description about how to use this program.
     logging.cat << EOF
@@ -231,7 +240,9 @@ function build_initramfs_parse_command_line() {
 }
 
 ## endregion
+
 ## region helper
+
 function build_initramfs_initialize_dracut() {
     # Downloads and compiles dracut.
     #
@@ -284,10 +295,15 @@ function build_initramfs_cleanup() {
     clean
     return $?
 }
+
 ## endregion
+
 # endregion
+
 # region controller
+
 ## region dependency checks
+
 utils.dependency_check "${build_initramfs_dependencies[*]}"
 # TODO check for existing kernel headers.
 # Find lib locations: $(gcc -print-prog-name=cc1plus) -v
@@ -295,12 +311,16 @@ if ! ldconfig --print-cache | grep libz.so; then
     logging.critical "You have to install the compression library \"libz\". Otherwise we aren't able to compile dnbd3 for your kernel."
     exit 1
 fi
+
 ## endregion
+
 if ! build_initramfs_parse_command_line "$@"; then
     build_initramfs_print_help_message "$0"
     exit 1
 fi
+
 ## region handle delegated operations to specified target
+
 if [[ "$build_initramfs_target" != '' ]]; then
     build_initramfs__target="$build_initramfs_target"
     if [[ -f "$build_initramfs_target" ]]; then
@@ -313,24 +333,6 @@ if [[ "$build_initramfs_target" != '' ]]; then
             "$build_initramfs__target" mktemp --directory)"
         mount --bind "$(pwd)" \
             "${build_initramfs__target}${build_initramfs__temporary_working_directory}"
-
-        # TODO implement a more nice chroot method
-        mkdir --parents "${build_initramfs__temporary_working_directory}/proc"
-        mount /proc \
-            "${build_initramfs__temporary_working_directory}/proc" --types \
-            proc --options nosuid,noexec,nodev
-        mkdir --parents "${build_initramfs__temporary_working_directory}/dev"
-        mount udev "${build_initramfs__temporary_working_directory}/dev" \
-            --types devtmpfs --options mode=0755,nosuid
-        mkdir --parents \
-            "${build_initramfs__temporary_working_directory}/dev/pts"
-        mount devpts "${build_initramfs__temporary_working_directory}/dev/pts" \
-            --types devpts --options mode=0620,gid=5,nosuid,noexec
-        mkdir --parents \
-            "${build_initramfs__temporary_working_directory}/dev/shm"
-        mount shm "${build_initramfs__temporary_working_directory}/dev/shm" \
-            --types tmpfs --options mode=1777,nosuid,nodev
-
         build_initramfs__parameter_skip=false
         build_initramfs__parameter_to_forward=()
         for build_initramfs__parameter; do
@@ -344,37 +346,32 @@ if [[ "$build_initramfs_target" != '' ]]; then
                 build_initramfs__parameter_to_forward+=("$build_initramfs__parameter")
             fi
         done
-        # NOTE: We temporary patch dracut to avoid removing the environment
-        # variables "LD_LIBRARY_PATH" and "LD_PRELOAD" to get "fakechroot"
-        # working with dracut. So we should remove this variables before
-        # running the patched dracut version to follow the initial intention.
-        unset LD_LIBRARY_PATH
-        unset LD_PRELOAD
-        # TODO
-        # patch dracut.sh temporary:
-        # unset LD_LIBRARY_PATH
-        # unset LD_PRELOAD
-        # have to be removed! Since they broke the fakechroot environment.
-        # TODO check FAKECHROOT_CMD_SUBST
-        FAKECHROOT_CMD_SUBST=/usr/bin/ldconfig=/usr/bin/ldconfig fakeroot \
-            fakechroot chroot "${build_initramfs__target}" \
+        # NOTE: We would have to temporary patch dracut to avoid removing the
+        # environment variables "LD_LIBRARY_PATH" and "LD_PRELOAD" to get
+        # "fakechroot" working with dracut. So we should remove this variables
+        # before running the patched dracut version to follow the initial
+        # intention. You should first do:
+        # >>> unset LD_LIBRARY_PATH
+        # >>> unset LD_PRELOAD
+        # and patch "dracut.sh" temporary to comment out:
+        # >>> unset LD_LIBRARY_PATH
+        # >>> unset LD_PRELOAD
+        # To avoid to broke the "fakechroot" environment pipe the ldconfig call
+        # to the native one:
+        # >>> FAKECHROOT_CMD_SUBST=/usr/bin/ldconfig=/usr/bin/ldconfig
+        change_root "${build_initramfs__target}" \
             "${build_initramfs__temporary_working_directory}/${BASH_SOURCE[0]}" \
             ${build_initramfs__parameter_to_forward[*]}
-
-        umount /proc
-        umount /dev
-        umount /dev/pts
-        umount /dev/shm
-
-        umount "${build_initramfs__target}${build_initramfs__temporary_working_directory}"
-
         mv "${build_initramfs__target}/$build_initramfs_file_path" \
             "$build_initramfs_file_path"
     fi
     exit 0
 fi
+
 ## endregion
+
 ## region handle dependencies which can be resolved automatically
+
 logging.info 'Checking dracut.'
 if ! [[ -f "$(dirname "${BASH_SOURCE[0]}")/dracut/dracut-install" ]]; then
     logging.info "Dracut isn't available yet loading it."
@@ -398,8 +395,11 @@ then
             "$build_initramfs__dracut_modules_target"
     fi
 fi
+
 ## endregion
+
 ## region prepare and perform final dracut call
+
 build_initramfs__loglevel=''
 if [ "$build_initramfs_verbose" == 'yes' ]; then
     build_initramfs__loglevel='--verbose'
@@ -426,9 +426,14 @@ else
     exceptions.activate
 fi
 exceptions.deactivate
+
 ## endregion
+
 # endregion
+
 # region vim modline
+
 # vim: set tabstop=4 shiftwidth=4 expandtab:
 # vim: foldmethod=marker foldmarker=region,endregion:
+
 # endregion