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#!/usr/bin/env python3
# libpulp - User-space Livepatching Library
#
# Copyright (C) 2020-2021 SUSE Software Solutions GmbH
#
# This file is part of libpulp.
#
# libpulp is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# libpulp 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with libpulp. If not, see <http://www.gnu.org/licenses/>.
import signal
import testsuite
child = testsuite.spawn('blocked')
# Wait for both threads to be ready (the order does not matter)
child.expect('Waiting for signals.')
child.expect('Waiting for signals.')
# At program start, two threads are put into loops waiting for signals,
# thread1 waits for SIGUSR1 and thread2 waits for SIGUSR2.
child.kill(signal.SIGUSR1)
child.expect('hello')
child.kill(signal.SIGUSR2)
child.expect('hello')
# After the live patching, thread1, which is looping outside the
# library, should produce a different output, whereas thread2, which
# never leaves the library, should display the old behavior.
child.livepatch('.libs/libblocked_livepatch1.so')
child.kill(signal.SIGUSR1)
child.expect('olleh', reject='hello')
child.kill(signal.SIGUSR2)
child.expect('hello', reject='olleh')
child.close(force=True)
exit(0)
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