blob: 8a30cc3865ed4df1feae79c633489a92372a7448 [file] [log] [blame]
#!/usr/bin/env python
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
Runs an executable on a remote host.
This is meant to be used as an executor when running the C++ Standard Library
conformance test suite.
import argparse
import os
import posixpath
import shlex
import subprocess
import sys
import tarfile
import tempfile
def ssh(args, command):
cmd = ['ssh', '-oBatchMode=yes']
if args.extra_ssh_args is not None:
return cmd + [, command]
def scp(args, src, dst):
cmd = ['scp', '-q', '-oBatchMode=yes']
if args.extra_scp_args is not None:
return cmd + [src, '{}:{}'.format(, dst)]
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--host', type=str, required=True)
parser.add_argument('--execdir', type=str, required=True)
parser.add_argument('--extra-ssh-args', type=str, required=False)
parser.add_argument('--extra-scp-args', type=str, required=False)
parser.add_argument('--codesign_identity', type=str, required=False, default=None)
parser.add_argument('--env', type=str, nargs='*', required=False, default=dict())
parser.add_argument("command", nargs=argparse.ONE_OR_MORE)
args = parser.parse_args()
commandLine = args.command
# Create a temporary directory where the test will be run.
# That is effectively the value of %T on the remote host.
tmp = subprocess.check_output(ssh(args, 'mktemp -d /tmp/libcxx.XXXXXXXXXX'), universal_newlines=True).strip()
# If an argument is a file that ends in `.tmp.exe`, assume it is the name
# of an executable generated by a test file. We call these test-executables
# below. This allows us to do custom processing like codesigning test-executables
# and changing their path when running on the remote host. It's also possible
# for there to be no such executable, for example in the case of a .sh.cpp
# test.
isTestExe = lambda exe: exe.endswith('.tmp.exe') and os.path.exists(exe)
pathOnRemote = lambda file: posixpath.join(tmp, os.path.basename(file))
# Do any necessary codesigning of test-executables found in the command line.
if args.codesign_identity:
for exe in filter(isTestExe, commandLine):
subprocess.check_call(['xcrun', 'codesign', '-f', '-s', args.codesign_identity, exe], env={})
# tar up the execution directory (which contains everything that's needed
# to run the test), and copy the tarball over to the remote host.
tmpTar = tempfile.NamedTemporaryFile(suffix='.tar', delete=False)
with, mode='w') as tarball:
tarball.add(args.execdir, arcname=os.path.basename(args.execdir))
# Make sure we close the file before we scp it, because accessing
# the temporary file while still open doesn't work on Windows.
remoteTarball = pathOnRemote(
subprocess.check_call(scp(args,, remoteTarball))
# Make sure we close the file in case an exception happens before
# we've closed it above -- otherwise close() is idempotent.
# Untar the dependencies in the temporary directory and remove the tarball.
remoteCommands = [
'tar -xf {} -C {} --strip-components 1'.format(remoteTarball, tmp),
'rm {}'.format(remoteTarball)
# Make sure all test-executables in the remote command line have 'execute'
# permissions on the remote host. The host that compiled the test-executable
# might not have a notion of 'executable' permissions.
for exe in map(pathOnRemote, filter(isTestExe, commandLine)):
remoteCommands.append('chmod +x {}'.format(exe))
# Execute the command through SSH in the temporary directory, with the
# correct environment. We tweak the command line to run it on the remote
# host by transforming the path of test-executables to their path in the
# temporary directory on the remote host.
commandLine = (pathOnRemote(x) if isTestExe(x) else x for x in commandLine)
remoteCommands.append('cd {}'.format(tmp))
if args.env:
remoteCommands.append('export {}'.format(' '.join(args.env)))
# Finally, SSH to the remote host and execute all the commands.
rc =, ' && '.join(remoteCommands)))
return rc
# Make sure the temporary directory is removed when we're done.
subprocess.check_call(ssh(args, 'rm -r {}'.format(tmp)))
if __name__ == '__main__':