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https://github.com/chromium/crashpad.git
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f35799cb41
Ensures that enough networking is set up before returning so that the VM will be ready to accept commands to run tests. Otherwise requests to do so immediately after the VM is started can flakily fail. Bug: crashpad:196 Change-Id: Idc231e7fc418ad054bb9ec115c1598c804055a96 Reviewed-on: https://chromium-review.googlesource.com/862709 Commit-Queue: Scott Graham <scottmg@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
133 lines
4.0 KiB
Python
Executable File
133 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2017 The Crashpad Authors. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Helper script to [re]start or stop a helper Fuchsia QEMU instance to be used
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for running tests without a device.
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"""
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from __future__ import print_function
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import getpass
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import os
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import random
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import signal
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import subprocess
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import sys
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import tempfile
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import time
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try:
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from subprocess import DEVNULL
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except ImportError:
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DEVNULL = open(os.devnull, 'r+b')
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CRASHPAD_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)),
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os.pardir)
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def _Stop(pid_file):
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if os.path.isfile(pid_file):
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with open(pid_file, 'rb') as f:
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pid = int(f.read().strip())
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try:
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os.kill(pid, signal.SIGTERM)
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except:
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print('Unable to kill pid %d, continuing' % pid, file=sys.stderr)
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os.unlink(pid_file)
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def _CheckForTun():
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"""Check for networking. TODO(scottmg): Currently, this is Linux-specific.
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"""
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returncode = subprocess.call(
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['tunctl', '-b', '-u', getpass.getuser(), '-t', 'qemu'],
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stdout=DEVNULL, stderr=DEVNULL)
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if returncode != 0:
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print('To use QEMU with networking on Linux, configure TUN/TAP. See:',
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file=sys.stderr)
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print(' https://fuchsia.googlesource.com/zircon/+/HEAD/docs/qemu.md#enabling-networking-under-qemu-x86_64-only',
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file=sys.stderr)
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return 2
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return 0
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def _Start(pid_file):
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tun_result = _CheckForTun()
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if tun_result != 0:
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return tun_result
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arch = 'mac-amd64' if sys.platform == 'darwin' else 'linux-amd64'
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fuchsia_dir = os.path.join(CRASHPAD_ROOT, 'third_party', 'fuchsia')
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qemu_path = os.path.join(fuchsia_dir, 'qemu', arch, 'bin',
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'qemu-system-x86_64')
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kernel_data_dir = os.path.join(fuchsia_dir, 'sdk', arch, 'target', 'x86_64')
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kernel_path = os.path.join(kernel_data_dir, 'zircon.bin')
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initrd_path = os.path.join(kernel_data_dir, 'bootdata.bin')
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mac_tail = ':'.join('%02x' % random.randint(0, 255) for x in range(3))
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instance_name = 'crashpad_qemu_' + \
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''.join(chr(random.randint(ord('A'), ord('Z'))) for x in range(8))
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# These arguments are from the Fuchsia repo in zircon/scripts/run-zircon.
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popen = subprocess.Popen([
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qemu_path,
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'-m', '2048',
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'-nographic',
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'-kernel', kernel_path,
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'-initrd', initrd_path,
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'-smp', '4',
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'-serial', 'stdio',
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'-monitor', 'none',
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'-machine', 'q35',
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'-cpu', 'host,migratable=no',
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'-enable-kvm',
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'-netdev', 'type=tap,ifname=qemu,script=no,downscript=no,id=net0',
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'-device', 'e1000,netdev=net0,mac=52:54:00:' + mac_tail,
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'-append', 'TERM=dumb zircon.nodename=' + instance_name,
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], stdin=DEVNULL, stdout=DEVNULL, stderr=DEVNULL)
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with open(pid_file, 'wb') as f:
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f.write('%d\n' % popen.pid)
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for i in range(10):
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netaddr_path = os.path.join(fuchsia_dir, 'sdk', arch, 'tools', 'netaddr')
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if subprocess.call([netaddr_path, '--nowait', instance_name],
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stdout=open(os.devnull), stderr=open(os.devnull)) == 0:
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break
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time.sleep(.5)
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else:
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print('instance did not respond after start', file=sys.stderr)
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return 1
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def main(args):
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if len(args) != 1 or args[0] not in ('start', 'stop'):
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print('usage: run_fuchsia_qemu.py start|stop', file=sys.stderr)
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return 1
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command = args[0]
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pid_file = os.path.join(tempfile.gettempdir(), 'crashpad_fuchsia_qemu_pid')
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_Stop(pid_file)
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if command == 'start':
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_Start(pid_file)
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return 0
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if __name__ == '__main__':
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sys.exit(main(sys.argv[1:]))
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