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systemd/test/units/TEST-74-AUX-UTILS.sysusers.sh
Luca Boccassi fc9938d6f8 sysusers: handle NSS errors gracefully
If the io.systemd.DynamicUser or io.systemd.Machine files exist,
but nothing is listening on them, the nss-systemd module returns
ECONNREFUSED and systemd-sysusers fails to creat the user/group.

This is problematic when ran by packaging scripts, as the package
assumes that after this has run, the user/group exist and can
be used. adduser does not fail in the same situation.

Change sysusers to print a loud warning but otherwise continue
when NSS returns an error.
2024-07-04 16:43:51 +02:00

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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -eux
set -o pipefail
# shellcheck source=test/units/util.sh
. "$(dirname "$0")"/util.sh
at_exit() {
set +e
userdel -r foobarbaz
umount /run/systemd/userdb/
}
# Check that we indeed run under root to make the rest of the test work
[[ "$(id -u)" -eq 0 ]]
trap at_exit EXIT
# Ensure that a non-responsive NSS socket doesn't make sysusers fail
mount -t tmpfs tmpfs /run/systemd/userdb/
touch /run/systemd/userdb/io.systemd.DynamicUser
echo 'u foobarbaz' | SYSTEMD_LOG_LEVEL=debug systemd-sysusers -
grep -q foobarbaz /etc/passwd