107ebad9d5
Move DispVM creation to qfile-daemon-dvm/QubesDisposableVm from qubes-restore. As actual restore is handled by libvirt, we don't get much from separate qubes-restore process. This code still needs some improvements, especially on performance.
160 lines
6.3 KiB
Python
Executable File
160 lines
6.3 KiB
Python
Executable File
#!/usr/bin/python2
|
|
#
|
|
# The Qubes OS Project, http://www.qubes-os.org
|
|
#
|
|
# Copyright (C) 2010 Rafal Wojtczuk <rafal@invisiblethingslab.com>
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program 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 General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
#
|
|
#
|
|
import os
|
|
import subprocess
|
|
import sys
|
|
import fcntl
|
|
import shutil
|
|
import time
|
|
|
|
from qubes.qubes import QubesVmCollection
|
|
from qubes.qubes import QubesException
|
|
from qubes.qubes import QubesDaemonPidfile
|
|
from qubes.qubes import QubesDispVmLabels
|
|
from qubes.notify import tray_notify,tray_notify_error,tray_notify_init
|
|
|
|
current_savefile = '/var/run/qubes/current-savefile'
|
|
current_dvm_conf = '/var/run/qubes/current-dvm.conf'
|
|
current_savefile_vmdir = '/var/lib/qubes/dvmdata/vmdir'
|
|
|
|
class QfileDaemonDvm:
|
|
def __init__(self, name):
|
|
self.name = name
|
|
|
|
def get_disp_templ(self):
|
|
vmdir = os.readlink(current_savefile_vmdir)
|
|
return vmdir.split('/')[-1]
|
|
|
|
def do_get_dvm(self):
|
|
tray_notify("red", "Starting new DispVM...")
|
|
|
|
qvm_collection = QubesVmCollection()
|
|
qvm_collection.lock_db_for_writing()
|
|
|
|
tar_process = subprocess.Popen(['tar', '-C', current_savefile_vmdir,
|
|
'-xSUf', os.path.join(current_savefile_vmdir, 'saved-cows.tar')])
|
|
|
|
qvm_collection.load()
|
|
print >>sys.stderr, "time=%s, collection loaded" % (str(time.time()))
|
|
|
|
vm = qvm_collection.get_vm_by_name(self.name)
|
|
if vm is None:
|
|
sys.stderr.write( 'Domain ' + self.name + ' does not exist ?')
|
|
qvm_collection.unlock_db()
|
|
return None
|
|
label = vm.label
|
|
if len(sys.argv) > 4 and len(sys.argv[4]) > 0:
|
|
assert sys.argv[4] in QubesDispVmLabels.keys(), "Invalid label"
|
|
label = QubesDispVmLabels[sys.argv[4]]
|
|
disp_templ = self.get_disp_templ()
|
|
vm_disptempl = qvm_collection.get_vm_by_name(disp_templ);
|
|
if vm_disptempl is None:
|
|
sys.stderr.write( 'Domain ' + disptempl + ' does not exist ?')
|
|
qvm_collection.unlock_db()
|
|
return None
|
|
dispvm=qvm_collection.add_new_vm('QubesDisposableVm', disp_template=vm_disptempl, label=label)
|
|
print >>sys.stderr, "time=%s, VM created" % (str(time.time()))
|
|
# By default inherit firewall rules from calling VM
|
|
if os.path.exists(vm.firewall_conf):
|
|
disp_firewall_conf = '/var/run/qubes/%s-firewall.xml' % disp_name
|
|
shutil.copy(vm.firewall_conf, disp_firewall_conf)
|
|
dispvm.firewall_conf = disp_firewall_conf
|
|
if len(sys.argv) > 5 and len(sys.argv[5]) > 0:
|
|
assert os.path.exists(sys.argv[5]), "Invalid firewall.conf location"
|
|
dispvm.firewall_conf = sys.argv[5]
|
|
# Wait for tar to finish
|
|
if tar_process.wait() != 0:
|
|
sys.stderr.write('Failed to unpack saved-cows.tar')
|
|
qvm_collection.unlock_db()
|
|
return None
|
|
print >>sys.stderr, "time=%s, VM starting" % (str(time.time()))
|
|
dispvm.start()
|
|
print >>sys.stderr, "time=%s, VM started" % (str(time.time()))
|
|
qvm_collection.save()
|
|
qvm_collection.unlock_db()
|
|
# Reload firewall rules
|
|
print >>sys.stderr, "time=%s, reloading firewall" % (str(time.time()))
|
|
for vm in qvm_collection.values():
|
|
if vm.is_proxyvm() and vm.is_running():
|
|
vm.write_iptables_xenstore_entry()
|
|
|
|
return dispvm
|
|
|
|
def dvm_setup_ok(self):
|
|
dvmdata_dir = '/var/lib/qubes/dvmdata/'
|
|
if not os.path.isfile(current_savefile):
|
|
return False
|
|
if not os.path.isfile(dvmdata_dir+'default-savefile') or not os.path.isfile(dvmdata_dir+'savefile-root'):
|
|
return False
|
|
dvm_mtime = os.stat(current_savefile).st_mtime
|
|
root_mtime = os.stat(dvmdata_dir+'savefile-root').st_mtime
|
|
if dvm_mtime < root_mtime:
|
|
template_name = os.path.basename(os.path.dirname(os.readlink(dvmdata_dir+'savefile-root')))
|
|
if subprocess.call(["xl", "domid", template_name]) == 0:
|
|
tray_notify("For optimum performance, you should not "
|
|
"start DispVM when its template is running.", "red")
|
|
return False
|
|
return True
|
|
|
|
def get_dvm(self):
|
|
if not self.dvm_setup_ok():
|
|
if os.system("/usr/lib/qubes/qubes-update-dispvm-savefile-with-progress.sh >/dev/null </dev/null" ) != 0:
|
|
tray_notify_error("DVM savefile creation failed")
|
|
return None
|
|
return self.do_get_dvm()
|
|
|
|
def remove_disposable_from_qdb(self, name):
|
|
qvm_collection = QubesVmCollection()
|
|
qvm_collection.lock_db_for_writing()
|
|
qvm_collection.load()
|
|
vm = qvm_collection.get_vm_by_name(name)
|
|
if vm is None:
|
|
qvm_collection.unlock_db()
|
|
return False
|
|
qvm_collection.pop(vm.qid)
|
|
qvm_collection.save()
|
|
qvm_collection.unlock_db()
|
|
|
|
def main():
|
|
global notify_object
|
|
exec_index = sys.argv[1]
|
|
src_vmname = sys.argv[2]
|
|
user = sys.argv[3]
|
|
#accessed directly by get_dvm()
|
|
# sys.argv[4] - override label
|
|
# sys.argv[5] - override firewall
|
|
|
|
print >>sys.stderr, "time=%s, qfile-daemon-dvm init" % (str(time.time()))
|
|
tray_notify_init()
|
|
print >>sys.stderr, "time=%s, creating DispVM" % (str(time.time()))
|
|
qfile = QfileDaemonDvm(src_vmname)
|
|
dispvm = qfile.get_dvm()
|
|
if dispvm is not None:
|
|
print >>sys.stderr, "time=%s, starting VM process" % (str(time.time()))
|
|
subprocess.call(['/usr/lib/qubes/qrexec-client', '-d', dispvm.name,
|
|
user+':exec /usr/lib/qubes/qubes-rpc-multiplexer ' + exec_index + " " + src_vmname])
|
|
dispvm.force_shutdown()
|
|
qfile.remove_disposable_from_qdb(dispvm.name)
|
|
|
|
main()
|
|
|