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#!/bin/sh
# Copyright (C) 2012-2025 Free Software Foundation, Inc.
#
# This file is part of GNU Inetutils.
#
# GNU Inetutils is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at
# your option) any later version.
#
# GNU Inetutils is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see `http://www.gnu.org/licenses/'.
# Test to establish functionality of read_utmp() from Gnulib.
# The functionality is needed by our services syslog and talkd.
#
. ./tools.sh
READUTMP=${READUTMP:-./readutmp$EXEEXT}
if test ! -x $READUTMP; then
echo >&2 "No executable '$READUTMP' present. Skipping test."
exit 77
fi
if test -n "$VERBOSE"; then
set -x
fi
errno=0
if who >/dev/null 2>&1; then
# Check that readutmp agrees with who(1),
# limiting ourselves to at most three users.
for nn in `who | $SED 's/ .*//; 3q;'`; do
$READUTMP $nn || errno=1
done
else
# Execute READUTMP once without argument, and once with
# ourself as argument. Both should succeed, but are reported
# as skipped test in case of failure. They are known to be
# produce false positives in some circumstances.
$READUTMP || errno=77
$READUTMP `func_id_user` || errno=77
fi
if test $errno -eq 77; then
cat >&2 <<-EOT
NOTICE: read_utmp() from Gnulib just failed. This can be
due to running this test in sudo mode, or using a role.
Should this script fail while running it as a logged in
user, then read_utmp() is indeed broken on this system.
Then the present executables syslogd and talkd are not
fully functional.
EOT
elif test $errno -eq 1; then
cat >&2 <<-EOT
User messaging is broken in syslogd and talkd.
EOT
fi
exit $errno
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