#!/usr/bin/env python3
# libpulp - User-space Livepatching Library
#
# Copyright (C) 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 testsuite
child = testsuite.spawn('exception_handling')
child.expect('caught in lib')
child.expect('caught in main')
child.close(force=True)
exit(0)
# 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/>.
# Check the comments of `libbuildid_livepatch1.ulp` Makefile rule in
# Makefile.am on this folder.
#
# This test should fail because of buildid mismatch.
import testsuite
import subprocess
errorcode = 1
child = testsuite.spawn('buildid')
child.expect('Waiting for input.')
child.sendline('')
child.expect('1338')
try:
child.livepatch('libbuildid_livepatch1.ulp')
except subprocess.CalledProcessError:
errorcode = 0
child.close(force=True)
exit(errorcode)
# 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 testsuite
child = testsuite.spawn('contract')
child.expect('Waiting for input.')
errors = 0
child.sendline('')
child.sendline('')
child.expect('TYPE A data 128')
child.sendline('')
child.expect('TYPE B data 256.000000')
# Send the test program into the library.
child.sendline('')
# Apply live patch while inside library
child.livepatch('libcontract_livepatch1.ulp')
#!/usr/bin/env python3
# libpulp - User-space Livepatching Library
#
# Copyright (C) 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 testsuite
child = testsuite.spawn('cancel')
child.expect('OK')
child.close(force=True)
exit(0)
# 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 testsuite
child = testsuite.spawn('memory_protection')
child.expect('Waiting for input.')
# Every time a newline is sent, the test program touchs code memory
child.sendline('')
child.expect('pristine')
child.livepatch('libaddress_livepatch1.ulp')
# Try to touch code memory after live patching
child.sendline('')
try:
child.expect('patched', reject='pristine')
except EOFError:
# Diagnose the error
# 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 subprocess
import testsuite
child = testsuite.spawn('asunsafe_conversion')
child.expect('Waiting for signals.')
child.kill(signal.SIGUSR1)
child.expect('hello')
errors = 0
try:
# Apply the live patch.
child.livepatch('libblocked_livepatch1.ulp', retries=100)
except subprocess.TimeoutExpired:
print('Deadlock while live patching - AS-Unsafe conversion not tested')
# The deadlock test (tests/deadlock) has a far greater chance of
# detecting deadlocks during the application of live-patches, so
# return 77 to report that this test case was unable to detect the
try:
print('Applying/reverting live patch.')
tool = subprocess.run(command, timeout=timeout)
except subprocess.TimeoutExpired:
print('Live patching timed out.')
raise
# The trigger tool returns 0 on success, so use check_returncode(),
# which asserts that, and raises CalledProcessError otherwise.
tool.check_returncode()
print('Live patch applied/reverted successfully.')
childs = [
testsuite.spawn('manyprocesses'),
testsuite.spawn('manyprocesses'),
testsuite.spawn('manyprocesses')
]
for child in childs:
child.expect('Waiting for input.')
child.sendline('')
child.expect('1-2-3-4-5-6-7-8')
child.expect('1.0-2.0-3.0-4.0-5.0-6.0-7.0-8.0-9.0-10.0')
childless_livepatch(wildcard='./libmanyprocesses*.ulp',
verbose=True,
revert_lib='libmanyprocesses.so.0')
# 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 subprocess
import testsuite
# Since the deadlock demonstrated by this test case does not occur
# everytime it executes, run it in a loop. The amount of iterations
# hardcoded is arbitrary
errors = 0
child = testsuite.spawn('deadlock', log=None)
child.expect('Waiting for input.')
child.sendline('')
child.expect('hello')
# Applying a live patch to a process entails stopping all of its
# threads, then stealing one of them to jack into the process and call
# libpulp.so's routines that load and apply the live patch. These
# routines are called from the context of a signal-handler, and, as
# such, should not make calls to Asynchronous Signal Unsafe functions.
# However, libpulp calls dlopen, which is AS-Unsafe.
for attempt in range(200):
print(' Attempt #' + str(attempt))
try:
# 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 os
import subprocess
import time
import testsuite
from testsuite import ulptool
parent = testsuite.spawn('./terminal ./loop', script=False)
# Parent signal readiness first
parent.expect('Parent ready')
# Read the pid of the child process, which wrote it to stdout
parent.expect('Child ready')
parent.expect('[0-9]+')
pid = parent.after
if not type(pid) == str:
raise TypeError
if not pid.isnumeric():
raise ValueError
# If live patching SIGSTOPs the target process, the parent detects it
# with waitpid, but only most of the time. If the trigger and check
# 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 testsuite
child = testsuite.spawn('redzone', timeout=50)
child.expect('Waiting for input.')
child.livepatch('libblocked_livepatch1.ulp')
# Check live patch, which should not touch the redzone
child.is_patch_applied('libblocked_livepatch1.ulp')
# Read error output, if any
child.readline()
child.readline()
ret = child.wait()
if ret:
exit(1)
#
# 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 testsuite
child = testsuite.spawn('recursion', timeout=60)
child.expect('Waiting for input.')
child.sendline('45')
child.expect('1134903170')
child.livepatch('librecursion_livepatch1.ulp')
child.sendline('45')
child.expect('2537720636', reject='1134903170')
child.close(force=True)
exit(0)
# 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 testsuite
child = testsuite.spawn('syscall_restart')
child.expect('Waiting for input.')
# After printing the greeting message, the target process makes a call
# to fgets, which calls the read syscall. Applying a live patch will
# interrupt the syscall.
child.livepatch('libparameters_livepatch1.ulp')
# Send a newline, which should be received by the read syscall if it has
# been successfully restarted by libpulp. If the syscall has not been
# restarted, the child program will exit without printing anything.
child.sendline('')
child.expect('8-7-6-5-4-3-2-1')
child.expect('10.0-9.0-8.0-7.0-6.0-5.0-4.0-3.0-2.0-1.0')
# libpulp - User-space Livepatching Library
#
# Copyright (C) 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 testsuite
child = testsuite.spawn('constructor')
# Simply check that the test program works correctly with malloc interposition.
# See constructor.c for a lengthier explanation.
child.expect('OK')
child.close(force=True)
exit(0)
# 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 testsuite
child = testsuite.spawn('process', script=False)
child.expect('Waiting for input.')
child.sendline('')
child.expect('1-2-3-4-5-6-7-8');
child.expect('1.0-2.0-3.0-4.0-5.0-6.0-7.0-8.0-9.0-10.0');
child.livepatch('libprocess_livepatch1.ulp')
child.sendline('')
child.expect('8-7-6-5-4-3-2-1', reject='1-2-3-4-5-6-7-8');
child.expect('10.0-9.0-8.0-7.0-6.0-5.0-4.0-3.0-2.0-1.0',
reject='1.0-2.0-3.0-4.0-5.0-6.0-7.0-8.0-9.0-10.0');
child.livepatch('libprocess_livepatch1.rev')
# 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.
# 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 subprocess
import testsuite
livepatch_metadata = 'libparameters_livepatch2.ulp'
livepatch_container = 'libparameters_livepatch2.so'
child = testsuite.spawn('parameters')
child.expect('Waiting for input.')
errors = 1
try:
child.livepatch(livepatch_metadata)
except subprocess.CalledProcessError:
if not child.is_so_loaded(livepatch_container):
errors = 0
child.close(force=True)
exit(errors)
# 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 testsuite
child = testsuite.spawn(testsuite.testname)
child.expect('Original TLS banner')
child.expect('Banner changed from thread_func: 0')
child.expect('Banner changed from thread_func: 1')
child.livepatch('libtls_livepatch1.ulp')
child.sendline('')
child.expect('String from live patch',
reject=[
'String from thread_func: 0', 'String from thread_func: 1',
'Live patch data references not initialized'
])
child.close(force=True)
# 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 testsuite
child = testsuite.spawn('numserv')
child.expect('Waiting for input.')
child.sendline('hundred')
child.expect('100')
child.livepatch('libhundreds_livepatch1.ulp')
child.sendline('hundred')
child.expect('200', reject='100')
child.livepatch('libhundreds_livepatch2.ulp')
child.sendline('hundred')
child.expect('300', reject=['100', '200'])
#
# 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 testsuite
child = testsuite.spawn('pagecross')
child.expect('Waiting for input.')
child.sendline('')
child.expect('default')
child.livepatch('libpagecross_livepatch1.ulp')
child.sendline('')
child.expect('patched', reject='default')
child.close(force=True)
exit(0)
