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Diffstat (limited to '')
| -rwxr-xr-x | test/units/TEST-50-DISSECT.sysext.sh | 1012 |
1 files changed, 1012 insertions, 0 deletions
diff --git a/test/units/TEST-50-DISSECT.sysext.sh b/test/units/TEST-50-DISSECT.sysext.sh new file mode 100755 index 0000000..3bc8899 --- /dev/null +++ b/test/units/TEST-50-DISSECT.sysext.sh @@ -0,0 +1,1012 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: LGPL-2.1-or-later +set -eux +set -o pipefail + +FAKE_ROOTS_DIR="$(mktemp -d --tmpdir="" fake-roots-XXX)" +FSTYPE=$(stat --file-system --format "%T" /usr) + +shopt -s nullglob + +# shellcheck disable=SC2317 +at_exit() { + set +ex + + local target + + # Note: `cat` here is used intentionally, so we iterate over our own copy of /proc/mounts. Otherwise + # things get very confusing once we start unmounting things, due to changing file offsets. + # shellcheck disable=SC2002 + cat /proc/mounts | while read -r _ target _ _ _ _; do + if [[ "$target" =~ ^"$FAKE_ROOTS_DIR" ]]; then + umount -Rv "$target" + fi + done + + rm -rf "${FAKE_ROOTS_DIR}" +} + +trap at_exit EXIT + +# Clears the trap command - it needs to be invoked for every test-case subshell +# so prepending commands with prepend_trap inside the subshell won't preserve +# the trap commands from outer shell. +init_trap() { + trap - EXIT +} + +prepend_trap() { + set +x + + local command=${1}; shift + local previous_commands + + previous_commands=$(trap -p EXIT) + if [[ -z $previous_commands ]]; then + previous_commands=':' + else + previous_commands=${previous_commands#'trap -- '} + previous_commands=${previous_commands%' EXIT'} + previous_commands=$(xargs <<<"$previous_commands") + fi + + # shellcheck disable=SC2064 # We use double quotes on purpose here. + trap "${command}; ${previous_commands}" EXIT + + set -x +} + +prepare_root() { + local root=${1:-} + local hierarchy=${2:?} + local dir + + if [[ -n $root ]] && [[ -d $root ]]; then + echo >&2 "Directory $root already exists, possible copy-paste error?" + exit 1 + fi + + local -a leftovers=( "$root/var/lib/extensions/"* "$root/var/lib/extensions.mutable/"* ) + if [[ ${#leftovers[@]} -gt 0 ]]; then + echo >&2 "Leftovers remained, make sure to clean them up in the test case: ${leftovers[*]}" + exit 1 + fi + + for dir in "$hierarchy" "/usr/lib" "/var/lib/extensions/" "/var/lib/extensions.mutable"; do + mkdir -p "$root$dir" + done + + if [[ -e $root/usr/lib/os-release ]]; then + mv "$root/usr/lib/os-release" "$root/usr/lib/os-release.orig" + fi + + { + echo "ID=testtest" + echo "VERSION=1.2.3" + } >"$root/usr/lib/os-release" + + prepend_trap "cleanup_os_release ${root@Q}" +} + +cleanup_os_release() { + # shellcheck disable=SC2317 # It is not unreachable, used in a trap couple lines above. + local root=${1:-} + + # shellcheck disable=SC2317 # It is not unreachable, used in a trap couple lines above. + rm -f "$root/usr/lib/os-release" + # shellcheck disable=SC2317 # It is not unreachable, used in a trap couple lines above. + if [[ -e $root/usr/lib/os-release.orig ]]; then + # shellcheck disable=SC2317 # It is not unreachable, used in a trap couple lines above. + mv "$root/usr/lib/os-release.orig" "$root/usr/lib/os-release" + fi +} + +prepare_extension_image() { + local root=${1:-} + local hierarchy=${2:?} + local ext_dir ext_release name + + name="test-extension" + ext_dir="$root/var/lib/extensions/$name" + ext_release="$ext_dir/usr/lib/extension-release.d/extension-release.$name" + mkdir -p "${ext_release%/*}" + echo "ID=_any" >"$ext_release" + mkdir -p "$ext_dir/$hierarchy" + touch "$ext_dir$hierarchy/preexisting-file-in-extension-image" + + prepend_trap "rm -rf ${ext_dir@Q}" +} + +prepare_extension_mutable_dir() { + local dir=${1:?} + + mkdir -p "$dir" + touch "$dir/preexisting-file-in-extensions-mutable" + prepend_trap "rm -rf ${dir@Q}" +} + +make_read_only() { + local root=${1:-} + local hierarchy=${2:?} + + mount -o bind,ro "$root$hierarchy" "$root$hierarchy" + prepend_trap "umount ${root@Q}${hierarchy@Q}" +} + +prepare_hierarchy() { + local root=${1:-} + local hierarchy=${2:?} + local file + + file="$root$hierarchy/preexisting-file-in-hierarchy" + touch "$file" + prepend_trap "rm -f ${file@Q}" +} + +prepare_read_only_hierarchy() { + local root=${1:-} + local hierarchy=${2:?} + + prepare_hierarchy "$root" "$hierarchy" + make_read_only "$root" "$hierarchy" +} + +move_existing_hierarchy_aside() { + local root=${1:-} + local hierarchy=${2:?} + + if [[ -z $root ]] && [[ $hierarchy = /usr ]]; then + echo >&2 "Hell no, not moving /usr aside" + exit 1 + fi + + local path=$root$hierarchy + + if [[ -e $path ]]; then + mv "$path" "$path.orig" + prepend_trap "mv ${path@Q}.orig ${path@Q}" + fi +} + +# Extra arguments: +# -e: check for a preexisting file in extension +# -h: check for a preexisting file in hierarchy +# -u: check for a preexisting file in upperdir +extension_verify() { + local root=${1:-} + local hierarchy=${2:?} + local message=${3:?} + shift 3 + # Map each option to a pre-defined file name + local -A option_files_map=( + [e]="preexisting-file-in-extension-image" + [h]="preexisting-file-in-hierarchy" + [u]="preexisting-file-in-extensions-mutable" + ) + local -A args=( + [e]=0 + [h]=0 + [u]=0 + ) + local file full_path opt option + + while getopts "ehu" opt; do + case "$opt" in + e|h|u) + args["$opt"]=1 + ;; + *) + echo >&2 "Unxexpected option: $opt" + exit 1 + esac + done + + for option in "${!option_files_map[@]}"; do + file=${option_files_map["$option"]} + full_path="$root$hierarchy/$file" + + if [[ ${args["$option"]} -ne 0 ]]; then + if [[ ! -f $full_path ]]; then + ls -la "$root$hierarchy" + echo >&2 "Expected file '$file' to exist under $root$hierarchy $message" + exit 1 + fi + else + if [[ -f $full_path ]]; then + ls -la "$root$hierarchy" + echo >&2 "Expected file '$file' to not exist under $root$hierarchy $message" + exit 1 + fi + fi + done +} + +extension_verify_after_merge() ( + set +x + + local root=${1:-} + local hierarchy=${2:?} + shift 2 + + extension_verify "$root" "$hierarchy" "after merge" "$@" +) + +extension_verify_after_unmerge() ( + set +x + + local root=${1:-} + local hierarchy=${2:?} + shift 2 + + extension_verify "$root" "$hierarchy" "after unmerge" "$@" +) + +run_systemd_sysext() { + local root=${1:-} + shift + + local -a sysext_args + sysext_args=() + + if [[ -n $root ]]; then + sysext_args+=( "--root=$root" ) + fi + sysext_args+=( "$@" ) + systemd-sysext "${sysext_args[@]}" +} + +# General systemd-sysext tests + +run_sysext_tests() { + # The roots_dir variable may be empty - in such case all the tests will run + # on /, otherwise they will run on $roots_dir/<SEPARATE_DIR_FOR_TEST>. + local roots_dir=${1}; shift + + # Each test runs in a subshell, so we can use traps for cleanups without + # clobbering toplevel traps, and we can do skips by invoking "exit 0". + +( init_trap +: "No extension data in /var/lib/extensions.mutable/…, R/O hierarchy, mutability disabled by default, read-only merged" +fake_root=${roots_dir:+"$roots_dir/simple-read-only-with-read-only-hierarchy"} +hierarchy=/opt + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +) + + +( init_trap +: "No extension data in /var/lib/extensions.mutable/…, mutable hierarchy, mutability disabled by default, read-only merged" +fake_root=${roots_dir:+"$roots_dir/simple-read-only-with-mutable-hierarchy"} +hierarchy=/opt + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_hierarchy "$fake_root" "$hierarchy" +touch "$fake_root$hierarchy/should-succeed-on-mutable-fs" + +run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +touch "$fake_root$hierarchy/should-succeed-on-mutable-fs-again" +) + + +( init_trap +: "No extension data in /var/lib/extensions.mutable/…, no hierarchy either, mutability disabled by default, read-only merged" +fake_root=${roots_dir:+"$roots_dir/simple-read-only-with-missing-hierarchy"} +hierarchy=/opt + +move_existing_hierarchy_aside "$fake_root" "$hierarchy" +prepare_root "$fake_root" "$hierarchy" +rmdir "$fake_root/$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" + +run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" +) + + +( init_trap +: "No extension data in /var/lib/extensions.mutable/…, empty hierarchy, mutability disabled by default, read-only merged" +fake_root=${roots_dir:+"$roots_dir/simple-read-only-with-empty-hierarchy"} +hierarchy=/opt + +move_existing_hierarchy_aside "$fake_root" "$hierarchy" +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +make_read_only "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, mutability disabled by default, read-only merged" +fake_root=${roots_dir:+"$roots_dir/simple-mutable-with-read-only-hierarchy-disabled"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-be-read-only") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, auto-mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/simple-mutable-with-read-only-hierarchy"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=auto merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u +test -f "$extension_data_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, missing hierarchy, auto-mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/simple-mutable-with-missing-hierarchy"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +move_existing_hierarchy_aside "$fake_root" "$hierarchy" +prepare_root "$fake_root" "$hierarchy" +rmdir "$fake_root/$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" + +run_systemd_sysext "$fake_root" --mutable=auto merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -u +test -f "$extension_data_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" +test -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, empty hierarchy, auto-mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/simple-mutable-with-empty-hierarchy"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +move_existing_hierarchy_aside "$fake_root" "$hierarchy" +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +make_read_only "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=auto merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -u +test -f "$extension_data_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" +test -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "/var/lib/extensions.mutable/… is a symlink to other dir, R/O hierarchy, auto-mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/mutable-symlink-with-read-only-hierarchy"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_real_dir="$fake_root/upperdir" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_real_dir" +ln -sfTr "$extension_real_dir" "$extension_data_dir" +prepend_trap "rm -f ${extension_data_dir@Q}" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=auto merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u +test -f "$extension_data_dir/now-is-mutable" +test -f "$extension_real_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test -f "$extension_data_dir/now-is-mutable" +test -f "$extension_real_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "/var/lib/extensions.mutable/… is a symlink to the hierarchy itself, mutable hierarchy, auto-mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/mutable-self-upper"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_real_dir="$fake_root$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_real_dir" +ln -sfTr "$extension_real_dir" "$extension_data_dir" +prepend_trap "rm -f ${extension_data_dir@Q}" +touch "$fake_root$hierarchy/preexisting-file-in-hierarchy" + +run_systemd_sysext "$fake_root" --mutable=auto merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u +test -f "$extension_data_dir/now-is-mutable" +test -f "$extension_real_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h -u +test -f "$extension_data_dir/now-is-mutable" +test -f "$extension_real_dir/now-is-mutable" +) + + +( init_trap +: "/var/lib/extensions.mutable/… is a symlink to the hierarchy itself, R/O hierarchy, auto-mutability, expected fail" +fake_root=${roots_dir:+"$roots_dir/failure-self-upper-ro"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_real_dir="$fake_root$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_real_dir" +ln -sfTr "$extension_real_dir" "$extension_data_dir" +prepend_trap "rm -f ${extension_data_dir@Q}" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" + +(! run_systemd_sysext "$fake_root" --mutable=auto merge) +) + + +( init_trap +: "/var/lib/extensions.mutable/… is a dangling symlink, auto-mutability, read-only merged" +fake_root=${roots_dir:+"$roots_dir/read-only-mutable-dangling-symlink"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +ln -sfTr "/should/not/exist/" "$extension_data_dir" +prepend_trap "rm -f ${extension_data_dir@Q}" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=auto merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "/var/lib/extensions.mutable/… exists but ignored, mutability disabled explicitly, read-only merged" +fake_root=${roots_dir:+"$roots_dir/disabled"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=no merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "/var/lib/extensions.mutable/… exists but is imported instead, read-only merged" +fake_root=${roots_dir:+"$roots_dir/imported"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=import merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "/var/lib/extensions.mutable/… does not exist, mutability enabled, mutable merged" +fake_root=${roots_dir:+"$roots_dir/enabled"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_data_dir_usr="$fake_root/var/lib/extensions.mutable/usr" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") +test ! -d "$extension_data_dir" + +run_systemd_sysext "$fake_root" --mutable=yes merge +# systemd-sysext with --mutable=yes creates extensions.mutable directory for +# the hierarchy, so delete it after the test +prepend_trap "rm -rf ${extension_data_dir@Q}" +# systemd-sysext with --mutable=yes creates extensions.mutable directory also +# for the /usr hierarchy, because the image needs to have +# /usr/lib/extension-release.d/extension-release.<NAME> file - this causes the +# /usr hierarchy to also become mutable +prepend_trap "rm -rf ${extension_data_dir_usr@Q}" +test -d "$extension_data_dir" +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h +test -f "$extension_data_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "/var/lib/extensions.mutable/… does not exist, auto-mutability, read-only merged" +fake_root=${roots_dir:+"$roots_dir/simple-read-only-explicit"} +hierarchy=/opt + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=auto merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "/var/lib/extensions.mutable/… does not exist, mutability enabled through env var, mutable merged" +fake_root=${roots_dir:+"$roots_dir/enabled-env-var"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_data_dir_usr="$fake_root/var/lib/extensions.mutable/usr" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") +test ! -d "$extension_data_dir" + +SYSTEMD_SYSEXT_MUTABLE_MODE=yes run_systemd_sysext "$fake_root" merge +# systemd-sysext with --mutable=yes creates extensions.mutable directory for +# the hierarchy, so delete it after the test +prepend_trap "rm -rf ${extension_data_dir@Q}" +# systemd-sysext with --mutable=yes creates extensions.mutable directory also +# for the /usr hierarchy, because the image needs to have +# /usr/lib/extension-release.d/extension-release.<NAME> file - this causes the +# /usr hierarchy to also become mutable +prepend_trap "rm -rf ${extension_data_dir_usr@Q}" +test -d "$extension_data_dir" +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h +test -f "$extension_data_dir/now-is-mutable" + +SYSTEMD_SYSEXT_MUTABLE_MODE=yes run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "/var/lib/extensions.mutable/… does not exist, auto-mutability enabled through env var, read-only merged" +fake_root=${roots_dir:+"$roots_dir/read-only-auto-env-var"} +hierarchy=/opt + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=auto run_systemd_sysext "$fake_root" --mutable=auto merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +SYSTEMD_SYSEXT_MUTABLE_MODE=auto run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, auto-mutability enabled through env var, mutable merged" +fake_root=${roots_dir:+"$roots_dir/auto-mutable-env-var"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=auto run_systemd_sysext "$fake_root" merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u +test -f "$extension_data_dir/now-is-mutable" + +SYSTEMD_SYSEXT_MUTABLE_MODE=auto run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, mutability disabled through env var, read-only merged" +fake_root=${roots_dir:+"$roots_dir/env-var-disabled"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=no run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-be-read-only") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +SYSTEMD_SYSEXT_MUTABLE_MODE=no run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "/var/lib/extensions.mutable/… exists but is imported through env var, read-only merged" +fake_root=${roots_dir:+"$roots_dir/imported-env-var"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=import run_systemd_sysext "$fake_root" merge +(! touch "$fake_root$hierarchy/should-still-fail-on-read-only-fs") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u + +SYSTEMD_SYSEXT_MUTABLE_MODE=import run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, mutability enabled through env var but overridden via CLI option, read-only merged" +fake_root=${roots_dir:+"$roots_dir/env-var-overridden"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=yes run_systemd_sysext "$fake_root" --mutable=no merge +(! touch "$fake_root$hierarchy/should-be-read-only") +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h + +SYSTEMD_SYSEXT_MUTABLE_MODE=yes run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, ephemeral mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/ephemeral"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=ephemeral merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h +test ! -f "$extension_data_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test ! -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, ephemeral mutability through env var, mutable merged" +fake_root=${roots_dir:+"$roots_dir/ephemeral-env-var"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=ephemeral run_systemd_sysext "$fake_root" merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h +test ! -f "$extension_data_dir/now-is-mutable" + +SYSTEMD_SYSEXT_MUTABLE_MODE=ephemeral run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test ! -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, ephemeral import mutability, mutable merged" +fake_root=${roots_dir:+"$roots_dir/ephemeral-import"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +run_systemd_sysext "$fake_root" --mutable=ephemeral-import merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u +test ! -f "$extension_data_dir/now-is-mutable" + +run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test ! -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data in /var/lib/extensions.mutable/…, R/O hierarchy, ephemeral import mutability through env var, mutable merged" +fake_root=${roots_dir:+"$roots_dir/ephemeral-import-env-var"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_read_only_hierarchy "$fake_root" "$hierarchy" +(! touch "$fake_root$hierarchy/should-fail-on-read-only-fs") + +SYSTEMD_SYSEXT_MUTABLE_MODE=ephemeral-import run_systemd_sysext "$fake_root" merge +touch "$fake_root$hierarchy/now-is-mutable" +extension_verify_after_merge "$fake_root" "$hierarchy" -e -h -u +test ! -f "$extension_data_dir/now-is-mutable" + +SYSTEMD_SYSEXT_MUTABLE_MODE=ephemeral-import run_systemd_sysext "$fake_root" unmerge +extension_verify_after_unmerge "$fake_root" "$hierarchy" -h +test ! -f "$extension_data_dir/now-is-mutable" +test ! -f "$fake_root$hierarchy/now-is-mutable" +) + + +( init_trap +: "Extension data pointing to mutable hierarchy, ephemeral import mutability, expected fail" +fake_root=${roots_dir:+"$roots_dir/ephemeral-import-self"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_real_dir="$fake_root$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_real_dir" +ln -sfTr "$extension_real_dir" "$extension_data_dir" +prepend_trap "rm -f ${extension_data_dir@Q}" +prepare_hierarchy "$fake_root" "$hierarchy" +touch "$fake_root$hierarchy/should-succeed-on-read-only-fs" + +(! run_systemd_sysext "$fake_root" --mutable=ephemeral-import merge) +) + + +( init_trap +: "Extension data pointing to mutable hierarchy, import mutability, expected fail" +fake_root=${roots_dir:+"$roots_dir/import-self"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" +extension_real_dir="$fake_root$hierarchy" + +[[ "$FSTYPE" == "fuseblk" ]] && exit 0 + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_real_dir" +ln -sfTr "$extension_real_dir" "$extension_data_dir" +prepend_trap "rm -f ${extension_data_dir@Q}" +prepare_hierarchy "$fake_root" "$hierarchy" +touch "$fake_root$hierarchy/should-succeed-on-read-only-fs" + +(! run_systemd_sysext "$fake_root" --mutable=import merge) +) + + +for mutable_mode in no yes ephemeral; do + ( init_trap + : "Check if merging the hierarchy does not change its permissions, checking with --mutable=${mutable_mode}" + + fake_root=${roots_dir:+"$roots_dir/perm-checks-mutable-$mutable_mode"} + hierarchy=/opt + extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + + [[ "$FSTYPE" == "fuseblk" ]] && exit 0 + + prepare_root "$fake_root" "$hierarchy" + prepare_extension_image "$fake_root" "$hierarchy" + prepare_extension_mutable_dir "$extension_data_dir" + prepare_read_only_hierarchy "${fake_root}" "${hierarchy}" + + full_path="$fake_root$hierarchy" + permissions_before_merge=$(stat --format=%A "$full_path") + + run_systemd_sysext "$fake_root" "--mutable=$mutable_mode" merge + if [[ $mutable_mode = yes ]]; then + # systemd-sysext with --mutable=yes creates extensions.mutable + # directory also for the /usr hierarchy, because the image needs to + # have /usr/lib/extension-release.d/extension-release.<NAME> file - + # this causes the /usr hierarchy to also become mutable + extension_data_dir_usr="$fake_root/var/lib/extensions.mutable/usr" + prepend_trap "rm -rf ${extension_data_dir_usr@Q}" + fi + + permissions_after_merge=$(stat --format=%A "$full_path") + + run_systemd_sysext "$fake_root" unmerge + + permissions_after_unmerge=$(stat --format=%A "$full_path") + + if [[ "$permissions_before_merge" != "$permissions_after_merge" ]]; then + echo >&2 "Broken hierarchy permissions after merging with mutable mode ${mutable_mode@Q}, expected ${permissions_before_merge@Q}, got ${permissions_after_merge@Q}" + exit 1 + fi + + if [[ "$permissions_before_merge" != "$permissions_after_unmerge" ]]; then + echo >&2 "Broken hierarchy permissions after unmerging with mutable mode ${mutable_mode@Q}, expected ${permissions_before_merge@Q}, got ${permissions_after_unmerge@Q}" + exit 1 + fi + ) +done + + +( init_trap +: "Check if merging fails in case of invalid mutable directory permissions" + +fake_root=${roots_dir:+"$roots_dir/mutable-directory-with-invalid-permissions"} +hierarchy=/opt +extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy" + +prepare_root "$fake_root" "$hierarchy" +prepare_extension_image "$fake_root" "$hierarchy" +prepare_extension_mutable_dir "$extension_data_dir" +prepare_hierarchy "$fake_root" "$hierarchy" + +old_mode=$(stat --format '%#a' "$fake_root$hierarchy") +chmod 0755 "$fake_root$hierarchy" +prepend_trap "chmod ${old_mode@Q} ${fake_root@Q}${hierarchy@Q}" +chmod 0700 "$extension_data_dir" + +(! run_systemd_sysext "$fake_root" --mutable=yes merge) +) + +} # End of run_sysext_tests + + +# For preparing /, we need mutable /usr/. If it is read only, skip running the +# sysext tests on /. +if [[ -w /usr ]]; then + run_sysext_tests '' +fi +run_sysext_tests "$FAKE_ROOTS_DIR" + + +exit 0 |