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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -eux
set -o pipefail
if ! cgroupfs_supports_user_xattrs; then
echo "CGroup does not support user xattrs, skipping LogFilterPatterns= tests."
exit 0
fi
# shellcheck source=test/units/util.sh
. "$(dirname "$0")"/util.sh
NEEDS_RELOAD=
add_logs_filtering_override() {
local unit="${1:?}"
local override_name="${2:?}"
local log_filter="${3:-}"
mkdir -p "/run/systemd/system/$unit.d/"
echo -ne "[Service]\nLogFilterPatterns=$log_filter" >"/run/systemd/system/$unit.d/$override_name.conf"
NEEDS_RELOAD=1
}
run_service_and_fetch_logs() {
local unit="${1:?}"
local start
if [[ -n "$NEEDS_RELOAD" ]]; then
systemctl daemon-reload
NEEDS_RELOAD=
fi
journalctl --sync
start="$(date '+%Y-%m-%d %T.%6N')"
systemctl start "$unit"
journalctl -q -u "$unit" -S "$start" -p notice
}
at_exit() {
rm -rf /run/systemd/system/{logs-filtering,delegated-cgroup-filtering}.service.d
systemctl daemon-reload
}
trap at_exit EXIT
# Accept all log messages
add_logs_filtering_override "logs-filtering.service" "00-reset" ""
[[ -n $(run_service_and_fetch_logs "logs-filtering.service") ]]
add_logs_filtering_override "logs-filtering.service" "01-allow-all" ".*"
[[ -n $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Discard all log messages
add_logs_filtering_override "logs-filtering.service" "02-discard-all" "~.*"
[[ -z $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Accept all test messages
add_logs_filtering_override "logs-filtering.service" "03-reset" ""
[[ -n $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Discard all test messages
add_logs_filtering_override "logs-filtering.service" "04-discard-gg" "~.*gg.*"
[[ -z $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Deny filter takes precedence
add_logs_filtering_override "logs-filtering.service" "05-allow-all-but-too-late" ".*"
[[ -z $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Use tilde in a deny pattern
add_logs_filtering_override "logs-filtering.service" "06-reset" ""
add_logs_filtering_override "logs-filtering.service" "07-prevent-tilde" "~~more~"
[[ -z $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Only allow a pattern that won't be matched
add_logs_filtering_override "logs-filtering.service" "08-reset" ""
add_logs_filtering_override "logs-filtering.service" "09-allow-only-non-existing" "non-existing string"
[[ -z $(run_service_and_fetch_logs "logs-filtering.service") ]]
# Allow a pattern starting with a tilde
add_logs_filtering_override "logs-filtering.service" "10-allow-with-escape-char" "\\\\x7emore~"
[[ -n $(run_service_and_fetch_logs "logs-filtering.service") ]]
add_logs_filtering_override "logs-filtering.service" "11-reset" ""
add_logs_filtering_override "logs-filtering.service" "12-allow-with-spaces" "foo bar"
[[ -n $(run_service_and_fetch_logs "logs-filtering.service") ]]
add_logs_filtering_override "delegated-cgroup-filtering.service" "00-allow-all" ".*"
[[ -n $(run_service_and_fetch_logs "delegated-cgroup-filtering.service") ]]
add_logs_filtering_override "delegated-cgroup-filtering.service" "01-discard-hello" "~hello"
[[ -z $(run_service_and_fetch_logs "delegated-cgroup-filtering.service") ]]
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