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qemu-e2k/scripts/qmp/qemu-ga-client
Stefan Hajnoczi 8593898109 Use qemu-project.org domain name 
qemu.org is held by a third-party and no core community contributor has
access to the DNS configuration.  This leaves the website exposed to
outages due to DNS issues or IP address changes.  For example, if the
web server IP address needs to change we cannot guarantee qemu.org will
point to it!

The newer qemu-project.org domain name is owned by Anthony Liguori
<anthony@codemonkey.ws>.  You can confirm this by querying the whois
information.  Also note that the #qemu IRC channel topic already
references qemu-project.org.

Short of having a dedicated legal entity to hold the domain name on
behalf of the community, qemu-project.org seems like the safest bet.

Let's replace references to qemu.org with qemu-project.org.

Note that git-submodule(1) does not detect URL changes.  The following
commands clear out and re-initialize all submodules to ensure you are
using the latest URLs:

  $ git submodule deinit . # you'll be warned if you have local changes
  $ rm -rf .git/modules    # also clear cached .git/ directories
  $ git submodule update --init

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1381495958-8306-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
2013-10-11 09:34:56 -07:00

302 lines
8.1 KiB
Python
Executable File
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#!/usr/bin/python
# QEMU Guest Agent Client
#
# Copyright (C) 2012 Ryota Ozaki <ozaki.ryota@gmail.com>
#
# This work is licensed under the terms of the GNU GPL, version 2. See
# the COPYING file in the top-level directory.
#
# Usage:
#
# Start QEMU with:
#
# # qemu [...] -chardev socket,path=/tmp/qga.sock,server,nowait,id=qga0 \
# -device virtio-serial -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0
#
# Run the script:
#
# $ qemu-ga-client --address=/tmp/qga.sock <command> [args...]
#
# or
#
# $ export QGA_CLIENT_ADDRESS=/tmp/qga.sock
# $ qemu-ga-client <command> [args...]
#
# For example:
#
# $ qemu-ga-client cat /etc/resolv.conf
# # Generated by NetworkManager
# nameserver 10.0.2.3
# $ qemu-ga-client fsfreeze status
# thawed
# $ qemu-ga-client fsfreeze freeze
# 2 filesystems frozen
#
# See also: http://wiki.qemu-project.org/Features/QAPI/GuestAgent
#
import base64
import random
import qmp
class QemuGuestAgent(qmp.QEMUMonitorProtocol):
def __getattr__(self, name):
def wrapper(**kwds):
return self.command('guest-' + name.replace('_', '-'), **kwds)
return wrapper
class QemuGuestAgentClient:
error = QemuGuestAgent.error
def __init__(self, address):
self.qga = QemuGuestAgent(address)
self.qga.connect(negotiate=False)
def sync(self, timeout=3):
# Avoid being blocked forever
if not self.ping(timeout):
raise EnvironmentError('Agent seems not alive')
uid = random.randint(0, (1 << 32) - 1)
while True:
ret = self.qga.sync(id=uid)
if isinstance(ret, int) and int(ret) == uid:
break
def __file_read_all(self, handle):
eof = False
data = ''
while not eof:
ret = self.qga.file_read(handle=handle, count=1024)
_data = base64.b64decode(ret['buf-b64'])
data += _data
eof = ret['eof']
return data
def read(self, path):
handle = self.qga.file_open(path=path)
try:
data = self.__file_read_all(handle)
finally:
self.qga.file_close(handle=handle)
return data
def info(self):
info = self.qga.info()
msgs = []
msgs.append('version: ' + info['version'])
msgs.append('supported_commands:')
enabled = [c['name'] for c in info['supported_commands'] if c['enabled']]
msgs.append('\tenabled: ' + ', '.join(enabled))
disabled = [c['name'] for c in info['supported_commands'] if not c['enabled']]
msgs.append('\tdisabled: ' + ', '.join(disabled))
return '\n'.join(msgs)
def __gen_ipv4_netmask(self, prefixlen):
mask = int('1' * prefixlen + '0' * (32 - prefixlen), 2)
return '.'.join([str(mask >> 24),
str((mask >> 16) & 0xff),
str((mask >> 8) & 0xff),
str(mask & 0xff)])
def ifconfig(self):
nifs = self.qga.network_get_interfaces()
msgs = []
for nif in nifs:
msgs.append(nif['name'] + ':')
if 'ip-addresses' in nif:
for ipaddr in nif['ip-addresses']:
if ipaddr['ip-address-type'] == 'ipv4':
addr = ipaddr['ip-address']
mask = self.__gen_ipv4_netmask(int(ipaddr['prefix']))
msgs.append("\tinet %s netmask %s" % (addr, mask))
elif ipaddr['ip-address-type'] == 'ipv6':
addr = ipaddr['ip-address']
prefix = ipaddr['prefix']
msgs.append("\tinet6 %s prefixlen %s" % (addr, prefix))
if nif['hardware-address'] != '00:00:00:00:00:00':
msgs.append("\tether " + nif['hardware-address'])
return '\n'.join(msgs)
def ping(self, timeout):
self.qga.settimeout(timeout)
try:
self.qga.ping()
except self.qga.timeout:
return False
return True
def fsfreeze(self, cmd):
if cmd not in ['status', 'freeze', 'thaw']:
raise StandardError('Invalid command: ' + cmd)
return getattr(self.qga, 'fsfreeze' + '_' + cmd)()
def fstrim(self, minimum=0):
return getattr(self.qga, 'fstrim')(minimum=minimum)
def suspend(self, mode):
if mode not in ['disk', 'ram', 'hybrid']:
raise StandardError('Invalid mode: ' + mode)
try:
getattr(self.qga, 'suspend' + '_' + mode)()
# On error exception will raise
except self.qga.timeout:
# On success command will timed out
return
def shutdown(self, mode='powerdown'):
if mode not in ['powerdown', 'halt', 'reboot']:
raise StandardError('Invalid mode: ' + mode)
try:
self.qga.shutdown(mode=mode)
except self.qga.timeout:
return
def _cmd_cat(client, args):
if len(args) != 1:
print('Invalid argument')
print('Usage: cat <file>')
sys.exit(1)
print(client.read(args[0]))
def _cmd_fsfreeze(client, args):
usage = 'Usage: fsfreeze status|freeze|thaw'
if len(args) != 1:
print('Invalid argument')
print(usage)
sys.exit(1)
if args[0] not in ['status', 'freeze', 'thaw']:
print('Invalid command: ' + args[0])
print(usage)
sys.exit(1)
cmd = args[0]
ret = client.fsfreeze(cmd)
if cmd == 'status':
print(ret)
elif cmd == 'freeze':
print("%d filesystems frozen" % ret)
else:
print("%d filesystems thawed" % ret)
def _cmd_fstrim(client, args):
if len(args) == 0:
minimum = 0
else:
minimum = int(args[0])
print(client.fstrim(minimum))
def _cmd_ifconfig(client, args):
print(client.ifconfig())
def _cmd_info(client, args):
print(client.info())
def _cmd_ping(client, args):
if len(args) == 0:
timeout = 3
else:
timeout = float(args[0])
alive = client.ping(timeout)
if not alive:
print("Not responded in %s sec" % args[0])
sys.exit(1)
def _cmd_suspend(client, args):
usage = 'Usage: suspend disk|ram|hybrid'
if len(args) != 1:
print('Less argument')
print(usage)
sys.exit(1)
if args[0] not in ['disk', 'ram', 'hybrid']:
print('Invalid command: ' + args[0])
print(usage)
sys.exit(1)
client.suspend(args[0])
def _cmd_shutdown(client, args):
client.shutdown()
_cmd_powerdown = _cmd_shutdown
def _cmd_halt(client, args):
client.shutdown('halt')
def _cmd_reboot(client, args):
client.shutdown('reboot')
commands = [m.replace('_cmd_', '') for m in dir() if '_cmd_' in m]
def main(address, cmd, args):
if not os.path.exists(address):
print('%s not found' % address)
sys.exit(1)
if cmd not in commands:
print('Invalid command: ' + cmd)
print('Available commands: ' + ', '.join(commands))
sys.exit(1)
try:
client = QemuGuestAgentClient(address)
except QemuGuestAgent.error, e:
import errno
print(e)
if e.errno == errno.ECONNREFUSED:
print('Hint: qemu is not running?')
sys.exit(1)
if cmd == 'fsfreeze' and args[0] == 'freeze':
client.sync(60)
elif cmd != 'ping':
client.sync()
globals()['_cmd_' + cmd](client, args)
if __name__ == '__main__':
import sys
import os
import optparse
address = os.environ['QGA_CLIENT_ADDRESS'] if 'QGA_CLIENT_ADDRESS' in os.environ else None
usage = "%prog [--address=<unix_path>|<ipv4_address>] <command> [args...]\n"
usage += '<command>: ' + ', '.join(commands)
parser = optparse.OptionParser(usage=usage)
parser.add_option('--address', action='store', type='string',
default=address, help='Specify a ip:port pair or a unix socket path')
options, args = parser.parse_args()
address = options.address
if address is None:
parser.error('address is not specified')
sys.exit(1)
if len(args) == 0:
parser.error('Less argument')
sys.exit(1)
main(address, args[0], args[1:])
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