1914854e88
Conflicts: dom0/qvm-core/qubes.py dom0/qvm-tools/qvm-prefs dom0/qvm-tools/qvm-template-commit
2053 lines
71 KiB
Python
Executable File
2053 lines
71 KiB
Python
Executable File
#!/usr/bin/python2.6
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2010 Joanna Rutkowska <joanna@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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#
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import sys
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import os
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import os.path
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import subprocess
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import xml.etree.ElementTree
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import xml.parsers.expat
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import fcntl
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import re
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import shutil
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from datetime import datetime
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from qmemman_client import QMemmanClient
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# Do not use XenAPI or create/read any VM files
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# This is for testing only!
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dry_run = False
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#dry_run = True
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if not dry_run:
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# Xen API
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import xmlrpclib
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from xen.xm import XenAPI
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from xen.xend import sxp
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qubes_guid_path = "/usr/bin/qubes_guid"
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qubes_base_dir = "/var/lib/qubes"
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qubes_appvms_dir = qubes_base_dir + "/appvms"
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qubes_templates_dir = qubes_base_dir + "/vm-templates"
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qubes_servicevms_dir = qubes_base_dir + "/servicevms"
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qubes_store_filename = qubes_base_dir + "/qubes.xml"
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qubes_max_qid = 254*254
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qubes_max_netid = 254
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vm_default_netmask = "255.255.0.0"
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default_root_img = "root.img"
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default_rootcow_img = "root-cow.img"
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default_swapcow_img = "swap-cow.img"
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default_private_img = "private.img"
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default_appvms_conf_file = "appvm-template.conf"
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default_templatevm_conf_template = "templatevm.conf" # needed for TemplateVM cloning
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default_appmenus_templates_subdir = "apps.templates"
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default_kernels_subdir = "kernels"
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default_firewall_conf_file = "firewall.xml"
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# do not allow to start a new AppVM if Dom0 mem was to be less than this
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dom0_min_memory = 700*1024*1024
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# We need this global reference, as each instance of QubesVm
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# must be able to ask Dom0 VM about how much memory it currently has...
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dom0_vm = None
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qubes_appmenu_create_cmd = "/usr/lib/qubes/create_apps_for_appvm.sh"
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qubes_appmenu_remove_cmd = "/usr/lib/qubes/remove_appvm_appmenus.sh"
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# TODO: we should detect the actual size of the AppVM's swap partition
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# rather than using this ugly hardcoded value, which was choosen here
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# as "should be good for everyone"
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swap_cow_sz = 1024*1024*1024
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class XendSession(object):
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def __init__(self):
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self.get_xend_session_old_api()
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self.get_xend_session_new_api()
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def get_xend_session_old_api(self):
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from xen.xend import XendClient
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from xen.util.xmlrpcclient import ServerProxy
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self.xend_server = ServerProxy(XendClient.uri)
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if self.xend_server is None:
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print "get_xend_session_old_api(): cannot open session!"
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def get_xend_session_new_api(self):
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xend_socket_uri = "httpu:///var/run/xend/xen-api.sock"
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self.session = XenAPI.Session (xend_socket_uri)
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self.session.login_with_password ("", "")
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if self.session is None:
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print "get_xend_session_new_api(): cannot open session!"
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if not dry_run:
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xend_session = XendSession()
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class QubesException (Exception) : pass
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class QubesHost(object):
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def __init__(self):
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self.hosts = xend_session.session.xenapi.host.get_all()
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self.host_record = xend_session.session.xenapi.host.get_record(self.hosts[0])
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self.host_metrics_record = xend_session.session.xenapi.host_metrics.get_record(self.host_record["metrics"])
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self.xen_total_mem = long(self.host_metrics_record["memory_total"])
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self.xen_no_cpus = len (self.host_record["host_CPUs"])
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# print "QubesHost: total_mem = {0}B".format (self.xen_total_mem)
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# print "QubesHost: free_mem = {0}".format (self.get_free_xen_memory())
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# print "QubesHost: total_cpus = {0}".format (self.xen_no_cpus)
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@property
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def memory_total(self):
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return self.xen_total_mem
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@property
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def no_cpus(self):
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return self.xen_no_cpus
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def get_free_xen_memory(self):
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ret = self.host_metrics_record["memory_free"]
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return long(ret)
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class QubesVmLabel(object):
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def __init__(self, name, index, color = None, icon = None):
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self.name = name
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self.index = index
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self.color = color if color is not None else name
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self.icon = icon if icon is not None else name
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self.icon_path = "/usr/share/qubes/icons/" + self.icon + ".png"
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# Globally defined lables
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QubesVmLabels = {
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"red" : QubesVmLabel ("red", 1),
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"orange" : QubesVmLabel ("orange", 2),
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"yellow" : QubesVmLabel ("yellow", 3),
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"green" : QubesVmLabel ("green", 4, color="0x5fa05e"),
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"gray" : QubesVmLabel ("gray", 5),
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"blue" : QubesVmLabel ("blue", 6),
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"purple" : QubesVmLabel ("purple", 7, color="0xb83374"),
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"black" : QubesVmLabel ("black", 8),
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}
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default_appvm_label = QubesVmLabels["red"]
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default_template_label = QubesVmLabels["gray"]
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default_servicevm_label = QubesVmLabels["red"]
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class QubesVm(object):
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"""
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A representation of one Qubes VM
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Only persistent information are stored here, while all the runtime
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information, e.g. Xen dom id, etc, are to be retrieved via Xen API
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Note that qid is not the same as Xen's domid!
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"""
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def __init__(self, qid, name,
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dir_path, conf_file = None,
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uses_default_netvm = True,
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netvm_vm = None,
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installed_by_rpm = False,
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updateable = False,
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label = None):
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assert qid < qubes_max_qid, "VM id out of bounds!"
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self.__qid = qid
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self.name = name
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dir_path = dir_path
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self.dir_path = dir_path
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conf_file = conf_file
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if self.dir_path is not None:
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if (conf_file is None):
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self.conf_file = dir_path + "/" + name + ".conf"
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else:
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if os.path.isabs(conf_file):
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self.conf_file = conf_file
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else:
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self.conf_file = dir_path + "/" + conf_file
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self.uses_default_netvm = uses_default_netvm
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self.netvm_vm = netvm_vm
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# We use it in remove from disk to avoid removing rpm files (for templates and netvms)
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self.installed_by_rpm = installed_by_rpm
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self.updateable = updateable
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self.label = label if label is not None else QubesVmLabels["red"]
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if self.dir_path is not None:
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self.icon_path = self.dir_path + "/icon.png"
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else:
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self.icon_path = None
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if not dry_run and xend_session.session is not None:
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self.refresh_xend_session()
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@property
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def qid(self):
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return self.__qid
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@property
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def ip(self):
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if self.netvm_vm is not None:
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return self.netvm_vm.get_ip_for_vm(self.qid)
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else:
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return None
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@property
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def netmask(self):
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if self.netvm_vm is not None:
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return self.netvm_vm.netmask
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else:
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return None
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@property
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def gateway(self):
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if self.netvm_vm is not None:
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return self.netvm_vm.gateway
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else:
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return None
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@property
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def secondary_dns(self):
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if self.netvm_vm is not None:
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return self.netvm_vm.secondary_dns
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else:
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return None
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def is_updateable(self):
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return self.updateable
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def is_networked(self):
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if self.is_netvm():
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return True
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if self.netvm_vm is not None:
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return True
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else:
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return False
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def set_nonupdateable(self):
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if not self.is_updateable():
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return
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assert not self.is_running()
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# We can always downgrade a VM to non-updateable...
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self.updateable = False
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def is_template(self):
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return isinstance(self, QubesTemplateVm)
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def is_appvm(self):
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return isinstance(self, QubesAppVm)
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def is_netvm(self):
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return isinstance(self, QubesNetVm)
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def is_proxyvm(self):
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return isinstance(self, QubesProxyVm)
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def is_disposablevm(self):
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return isinstance(self, QubesDisposableVm)
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def add_to_xen_storage(self):
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if dry_run:
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return
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retcode = subprocess.call (["/usr/sbin/xm", "new", "-q", self.conf_file])
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if retcode != 0:
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raise OSError ("Cannot add VM '{0}' to Xen Store!".format(self.name))
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return True
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def remove_from_xen_storage(self):
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if dry_run:
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return
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retcode = subprocess.call (["/usr/sbin/xm", "delete", self.name])
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if retcode != 0:
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raise OSError ("Cannot remove VM '{0}' from Xen Store!".format(self.name))
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self.in_xen_storage = False
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def refresh_xend_session(self):
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uuids = xend_session.session.xenapi.VM.get_by_name_label (self.name)
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self.session_uuid = uuids[0] if len (uuids) > 0 else None
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if self.session_uuid is not None:
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self.session_metrics = xend_session.session.xenapi.VM.get_metrics(self.session_uuid)
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else:
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self.session_metrics = None
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def update_xen_storage(self):
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self.remove_from_xen_storage()
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self.add_to_xen_storage()
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if not dry_run and xend_session.session is not None:
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self.refresh_xend_session()
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def get_xid(self):
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if dry_run:
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return 666
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try:
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xid = int (xend_session.session.xenapi.VM.get_domid (self.session_uuid))
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except XenAPI.Failure:
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self.refresh_xend_session()
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xid = int (xend_session.session.xenapi.VM.get_domid (self.session_uuid))
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return xid
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def get_mem(self):
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if dry_run:
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return 666
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try:
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mem = int (xend_session.session.xenapi.VM_metrics.get_memory_actual (self.session_metrics))
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except XenAPI.Failure:
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self.refresh_xend_session()
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mem = int (xend_session.session.xenapi.VM_metrics.get_memory_actual (self.session_metrics))
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return mem
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def get_mem_static_max(self):
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if dry_run:
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return 666
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try:
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mem = int(xend_session.session.xenapi.VM.get_memory_static_max(self.session_uuid))
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except XenAPI.Failure:
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self.refresh_xend_session()
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mem = int(xend_session.session.xenapi.VM.get_memory_static_max(self.session_uuid))
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return mem
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def get_mem_dynamic_max(self):
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if dry_run:
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return 666
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try:
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mem = int(xend_session.session.xenapi.VM.get_memory_dynamic_max(self.session_uuid))
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except XenAPI.Failure:
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self.refresh_xend_session()
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mem = int(xend_session.session.xenapi.VM.get_memory_dynamic_max(self.session_uuid))
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return mem
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def get_cpu_total_load(self):
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if dry_run:
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import random
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return random.random() * 100
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try:
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cpus_util = xend_session.session.xenapi.VM_metrics.get_VCPUs_utilisation (self.session_metrics)
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except XenAPI.Failure:
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self.refresh_xend_session()
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cpus_util = xend_session.session.xenapi.VM_metrics.get_VCPUs_utilisation (self.session_metrics)
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if len (cpus_util) == 0:
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return 0
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cpu_total_load = 0.0
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for cpu in cpus_util:
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cpu_total_load += cpus_util[cpu]
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cpu_total_load /= len(cpus_util)
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p = 100*cpu_total_load
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if p > 100:
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p = 100
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return p
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def get_power_state(self):
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if dry_run:
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return "NA"
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try:
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power_state = xend_session.session.xenapi.VM.get_power_state (self.session_uuid)
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except XenAPI.Failure:
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self.refresh_xend_session()
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if self.session_uuid is None:
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return "NA"
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power_state = xend_session.session.xenapi.VM.get_power_state (self.session_uuid)
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return power_state
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def is_running(self):
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if self.get_power_state() == "Running":
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return True
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else:
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return False
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def is_paused(self):
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if self.get_power_state() == "Paused":
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return True
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else:
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return False
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def get_disk_usage(self, file_or_dir):
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if not os.path.exists(file_or_dir):
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return 0
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p = subprocess.Popen (["du", "-s", "--block-size=1", file_or_dir],
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stdout=subprocess.PIPE)
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result = p.communicate()
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m = re.match(r"^(\d+)\s.*", result[0])
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sz = int(m.group(1)) if m is not None else 0
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return sz
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def get_disk_utilization(self):
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return self.get_disk_usage(self.dir_path)
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def get_disk_utilization_private_img(self):
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return self.get_disk_usage(self.private_img)
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def get_private_img_sz(self):
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if not os.path.exists(self.private_img):
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return 0
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return os.path.getsize(self.private_img)
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def create_xenstore_entries(self, xid):
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if dry_run:
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return
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# Set Xen Store entires with VM networking info:
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_vm_type".format(xid),
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self.type])
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if self.is_netvm():
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_netvm_gateway".format(xid),
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self.gateway])
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_netvm_secondary_dns".format(xid),
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self.secondary_dns])
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_netvm_netmask".format(xid),
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self.netmask])
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_netvm_network".format(xid),
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self.network])
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if self.netvm_vm is not None:
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_ip".format(xid),
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self.ip])
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_netmask".format(xid),
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self.netvm_vm.netmask])
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_gateway".format(xid),
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self.netvm_vm.gateway])
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retcode = subprocess.check_call ([
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"/usr/bin/xenstore-write",
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"/local/domain/{0}/qubes_secondary_dns".format(xid),
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self.netvm_vm.secondary_dns])
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def get_total_xen_memory(self):
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hosts = xend_session.session.xenapi.host.get_all()
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host_record = xend_session.session.xenapi.host.get_record(hosts[0])
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host_metrics_record = xend_session.session.xenapi.host_metrics.get_record(host_record["metrics"])
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ret = host_metrics_record["memory_total"]
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return long(ret)
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def start(self, debug_console = False, verbose = False, preparing_dvm = False):
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if dry_run:
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return
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if self.is_running():
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raise QubesException ("VM is already running!")
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if verbose:
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print "--> Rereading the VM's conf file ({0})...".format(self.conf_file)
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self.update_xen_storage()
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if verbose:
|
|
print "--> Loading the VM (type = {0})...".format(self.type)
|
|
|
|
if not self.is_netvm():
|
|
total_mem_mb = self.get_total_xen_memory()/1024/1024
|
|
xend_session.xend_server.xend.domain.maxmem_set(self.name, total_mem_mb)
|
|
|
|
mem_required = self.get_mem_dynamic_max()
|
|
qmemman_client = QMemmanClient()
|
|
if not qmemman_client.request_memory(mem_required):
|
|
qmemman_client.close()
|
|
raise MemoryError ("ERROR: insufficient memory to start this VM")
|
|
|
|
try:
|
|
xend_session.session.xenapi.VM.start (self.session_uuid, True) # Starting a VM paused
|
|
except XenAPI.Failure:
|
|
self.refresh_xend_session()
|
|
xend_session.session.xenapi.VM.start (self.session_uuid, True) # Starting a VM paused
|
|
|
|
qmemman_client.close() # let qmemman_daemon resume balancing
|
|
|
|
xid = int (xend_session.session.xenapi.VM.get_domid (self.session_uuid))
|
|
|
|
if verbose:
|
|
print "--> Setting Xen Store info for the VM..."
|
|
self.create_xenstore_entries(xid)
|
|
|
|
if self.netvm_vm is not None:
|
|
assert self.netvm_vm is not None
|
|
if verbose:
|
|
print "--> Attaching to the network backend (netvm={0})...".format(self.netvm_vm.name)
|
|
if preparing_dvm:
|
|
actual_ip = "254.254.254.254"
|
|
else:
|
|
actual_ip = self.ip
|
|
xm_cmdline = ["/usr/sbin/xm", "network-attach", self.name, "script=vif-route-qubes", "ip="+actual_ip]
|
|
if self.netvm_vm.qid != 0:
|
|
if not self.netvm_vm.is_running():
|
|
self.netvm_vm.start()
|
|
retcode = subprocess.call (xm_cmdline + ["backend={0}".format(self.netvm_vm.name)])
|
|
if retcode != 0:
|
|
self.force_shutdown()
|
|
raise OSError ("ERROR: Cannot attach to network backend!")
|
|
|
|
else:
|
|
retcode = subprocess.call (xm_cmdline)
|
|
if retcode != 0:
|
|
self.force_shutdown()
|
|
raise OSError ("ERROR: Cannot attach to network backend!")
|
|
|
|
#if verbose:
|
|
# print "--> Updating FirewallVMs rules..."
|
|
#for vm in qvm_collection.values():
|
|
# if vm.is_proxyvm():
|
|
# vm.write_iptables_xenstore_entry()
|
|
|
|
if verbose:
|
|
print "--> Starting the VM..."
|
|
xend_session.session.xenapi.VM.unpause (self.session_uuid)
|
|
|
|
# perhaps we should move it before unpause and fork?
|
|
if debug_console:
|
|
from xen.xm import console
|
|
if verbose:
|
|
print "--> Starting debug console..."
|
|
console.execConsole (xid)
|
|
|
|
return xid
|
|
|
|
def force_shutdown(self):
|
|
if dry_run:
|
|
return
|
|
|
|
try:
|
|
xend_session.session.xenapi.VM.hard_shutdown (self.session_uuid)
|
|
except XenAPI.Failure:
|
|
self.refresh_xend_session()
|
|
xend_session.session.xenapi.VM.hard_shutdown (self.session_uuid)
|
|
|
|
def remove_from_disk(self):
|
|
if dry_run:
|
|
return
|
|
|
|
|
|
shutil.rmtree (self.dir_path)
|
|
|
|
|
|
class QubesTemplateVm(QubesVm):
|
|
"""
|
|
A class that represents an TemplateVM. A child of QubesVm.
|
|
"""
|
|
def __init__(self, **kwargs):
|
|
|
|
if "dir_path" not in kwargs or kwargs["dir_path"] is None:
|
|
kwargs["dir_path"] = qubes_templates_dir + "/" + kwargs["name"]
|
|
|
|
if "updateable" not in kwargs or kwargs["updateable"] is None :
|
|
kwargs["updateable"] = True
|
|
|
|
root_img = kwargs.pop("root_img") if "root_img" in kwargs else None
|
|
private_img = kwargs.pop("private_img") if "private_img" in kwargs else None
|
|
appvms_conf_file = kwargs.pop("appvms_conf_file") if "appvms_conf_file" in kwargs else None
|
|
|
|
super(QubesTemplateVm, self).__init__(label = default_template_label, **kwargs)
|
|
|
|
dir_path = kwargs["dir_path"]
|
|
|
|
if root_img is not None and os.path.isabs(root_img):
|
|
self.root_img = root_img
|
|
else:
|
|
self.root_img = dir_path + "/" + (
|
|
root_img if root_img is not None else default_root_img)
|
|
|
|
self.rootcow_img = dir_path + "/" + default_rootcow_img
|
|
|
|
if private_img is not None and os.path.isabs(private_img):
|
|
self.private_img = private_img
|
|
else:
|
|
self.private_img = dir_path + "/" + (
|
|
private_img if private_img is not None else default_private_img)
|
|
|
|
if appvms_conf_file is not None and os.path.isabs(appvms_conf_file):
|
|
self.appvms_conf_file = appvms_conf_file
|
|
else:
|
|
self.appvms_conf_file = dir_path + "/" + (
|
|
appvms_conf_file if appvms_conf_file is not None else default_appvms_conf_file)
|
|
|
|
self.templatevm_conf_template = self.dir_path + "/" + default_templatevm_conf_template
|
|
self.kernels_dir = self.dir_path + "/" + default_kernels_subdir
|
|
self.appmenus_templates_dir = self.dir_path + "/" + default_appmenus_templates_subdir
|
|
self.appvms = QubesVmCollection()
|
|
|
|
@property
|
|
def type(self):
|
|
return "TempleteVM"
|
|
|
|
def set_updateable(self):
|
|
if self.is_updateable():
|
|
return
|
|
|
|
assert not self.is_running()
|
|
# Make sure that all the AppVMs are non-updateable...
|
|
for appvm in self.appvms.values():
|
|
if appvm.is_updateable():
|
|
raise QubesException("One of the AppVMs ('{0}')is also 'updateable'\
|
|
-- cannot make the TempleteVM {'{1}'} 'nonupdatable'".\
|
|
format (appvm.name, self.name))
|
|
self.updateable = True
|
|
|
|
|
|
def clone_disk_files(self, src_template_vm, verbose):
|
|
if dry_run:
|
|
return
|
|
|
|
|
|
assert not src_template_vm.is_running(), "Attempt to clone a running Template VM!"
|
|
|
|
if verbose:
|
|
print "--> Creating directory: {0}".format(self.dir_path)
|
|
os.mkdir (self.dir_path)
|
|
|
|
if verbose:
|
|
print "--> Copying the VM config file:\n{0} =*>\n{1}".\
|
|
format(src_template_vm.templatevm_conf_template, self.conf_file)
|
|
conf_templatevm_template = open (src_template_vm.templatevm_conf_template, "r")
|
|
conf_file = open(self.conf_file, "w")
|
|
rx_templatename = re.compile (r"%TEMPLATENAME%")
|
|
|
|
for line in conf_templatevm_template:
|
|
line = rx_templatename.sub (self.name, line)
|
|
conf_file.write(line)
|
|
|
|
conf_templatevm_template.close()
|
|
conf_file.close()
|
|
|
|
if verbose:
|
|
print "--> Copying the VM config template :\n{0} ==>\n{1}".\
|
|
format(src_template_vm.templatevm_conf_template, self.templatevm_conf_template)
|
|
shutil.copy (src_template_vm.templatevm_conf_template, self.templatevm_conf_template)
|
|
|
|
if verbose:
|
|
print "--> Copying the VM config template :\n{0} ==>\n{1}".\
|
|
format(src_template_vm.appvms_conf_file, self.appvms_conf_file)
|
|
shutil.copy (src_template_vm.appvms_conf_file, self.appvms_conf_file)
|
|
|
|
if verbose:
|
|
print "--> Copying the template's private image:\n{0} ==>\n{1}".\
|
|
format(src_template_vm.private_img, self.private_img)
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", src_template_vm.private_img, self.private_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(src_template_vm.private_img, self.private_img))
|
|
|
|
if verbose:
|
|
print "--> Copying the template's root image:\n{0} ==>\n{1}".\
|
|
format(src_template_vm.root_img, self.root_img)
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", src_template_vm.root_img, self.root_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(src_template_vm.root_img, self.root_img))
|
|
if verbose:
|
|
print "--> Copying the template's root COW image:\n{0} ==>\n{1}".\
|
|
format(src_template_vm.rootcow_img, self.rootcow_img)
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", src_template_vm.rootcow_img, self.rootcow_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(src_template_vm.root_img, self.root_img))
|
|
if verbose:
|
|
print "--> Copying the template's kernel dir:\n{0} ==>\n{1}".\
|
|
format(src_template_vm.kernels_dir, self.kernels_dir)
|
|
shutil.copytree (src_template_vm.kernels_dir, self.kernels_dir)
|
|
|
|
if verbose:
|
|
print "--> Copying the template's appvm templates dir:\n{0} ==>\n{1}".\
|
|
format(src_template_vm.appmenus_templates_dir, self.appmenus_templates_dir)
|
|
shutil.copytree (src_template_vm.appmenus_templates_dir, self.appmenus_templates_dir)
|
|
|
|
|
|
def get_disk_utilization_root_img(self):
|
|
return self.get_disk_usage(self.root_img)
|
|
|
|
def get_root_img_sz(self):
|
|
if not os.path.exists(self.root_img):
|
|
return 0
|
|
|
|
return os.path.getsize(self.root_img)
|
|
|
|
def verify_files(self):
|
|
if dry_run:
|
|
return
|
|
|
|
|
|
if not os.path.exists (self.dir_path):
|
|
raise QubesException (
|
|
"VM directory doesn't exist: {0}".\
|
|
format(self.dir_path))
|
|
|
|
if not os.path.exists (self.conf_file):
|
|
raise QubesException (
|
|
"VM config file doesn't exist: {0}".\
|
|
format(self.conf_file))
|
|
|
|
if not os.path.exists (self.appvms_conf_file):
|
|
raise QubesException (
|
|
"Appvm template config file doesn't exist: {0}".\
|
|
format(self.appvms_conf_file))
|
|
|
|
if not os.path.exists (self.root_img):
|
|
raise QubesException (
|
|
"VM root image file doesn't exist: {0}".\
|
|
format(self.root_img))
|
|
|
|
if not os.path.exists (self.private_img):
|
|
raise QubesException (
|
|
"VM private image file doesn't exist: {0}".\
|
|
format(self.private_img))
|
|
|
|
if not os.path.exists (self.kernels_dir):
|
|
raise QubesException (
|
|
"VM's kernels directory does not exist: {0}".\
|
|
format(self.kernels_dir))
|
|
|
|
return True
|
|
|
|
def start(self, debug_console = False, verbose = False):
|
|
if dry_run:
|
|
return
|
|
|
|
|
|
if not self.is_updateable():
|
|
raise QubesException ("Cannot start Template VM that is marked \"nonupdatable\"")
|
|
|
|
# TODO?: check if none of running appvms are outdated
|
|
|
|
return super(QubesTemplateVm, self).start(debug_console=debug_console, verbose=verbose)
|
|
|
|
def commit_changes (self):
|
|
|
|
assert not self.is_running(), "Attempt to commit changes on running Template VM!"
|
|
|
|
print "--> Commiting template updates... COW: {0}...".format (self.rootcow_img)
|
|
|
|
if dry_run:
|
|
return
|
|
if os.path.exists (self.rootcow_img):
|
|
os.remove (self.rootcow_img)
|
|
|
|
|
|
f_cow = open (self.rootcow_img, "w")
|
|
f_root = open (self.root_img, "r")
|
|
f_root.seek(0, os.SEEK_END)
|
|
f_cow.truncate (f_root.tell()) # make empty sparse file of the same size as root.img
|
|
f_cow.close ()
|
|
f_root.close()
|
|
|
|
def create_xml_element(self):
|
|
element = xml.etree.ElementTree.Element(
|
|
"QubesTemplateVm",
|
|
qid=str(self.qid),
|
|
name=self.name,
|
|
dir_path=self.dir_path,
|
|
conf_file=self.conf_file,
|
|
appvms_conf_file=self.appvms_conf_file,
|
|
root_img=self.root_img,
|
|
rootcow_img=self.rootcow_img,
|
|
private_img=self.private_img,
|
|
uses_default_netvm=str(self.uses_default_netvm),
|
|
netvm_qid=str(self.netvm_vm.qid) if self.netvm_vm is not None else "none",
|
|
installed_by_rpm=str(self.installed_by_rpm),
|
|
updateable=str(self.updateable),
|
|
)
|
|
return element
|
|
|
|
class QubesCowVm(QubesVm):
|
|
"""
|
|
A class that represent a VM based on some template, i.e. doesn't have own root.img
|
|
"""
|
|
def __init__(self, **kwargs):
|
|
if "dir_path" not in kwargs or kwargs["dir_path"] is None:
|
|
kwargs["dir_path"] = qubes_appvms_dir + "/" + kwargs["name"]
|
|
|
|
if "updateable" not in kwargs or kwargs["updateable"] is None:
|
|
kwargs["updateable"] = False
|
|
|
|
private_img = kwargs.pop("private_img")
|
|
template_vm = kwargs.pop("template_vm")
|
|
|
|
|
|
super(QubesCowVm, self).__init__(**kwargs)
|
|
qid = kwargs["qid"]
|
|
dir_path = kwargs["dir_path"]
|
|
# Dirty hack for QubesDom0NetVm...
|
|
if not isinstance(self, QubesDom0NetVm):
|
|
assert template_vm is not None, "Missing template_vm for template based VM!"
|
|
if not template_vm.is_template():
|
|
print "ERROR: template_qid={0} doesn't point to a valid TempleteVM".\
|
|
format(template_vm.qid)
|
|
return False
|
|
|
|
template_vm.appvms[qid] = self
|
|
self.template_vm = template_vm
|
|
|
|
# template based VM doesn't have its own root_img, it uses the one provided by the TemplateVM
|
|
if private_img is not None and os.path.isabs(private_img):
|
|
self.private_img = private_img
|
|
else:
|
|
self.private_img = dir_path + "/" + (
|
|
private_img if private_img is not None else default_private_img)
|
|
|
|
self.rootcow_img = dir_path + "/" + default_rootcow_img
|
|
|
|
def set_updateable(self):
|
|
if self.is_updateable():
|
|
return
|
|
|
|
assert not self.is_running()
|
|
# Check if the TemaplteVM is *non* updatable...
|
|
if not self.template_vm.is_updateable():
|
|
self.updateable = True
|
|
self.reset_cow_storage()
|
|
else:
|
|
# Temaplate VM is Updatable itself --> can't make the AppVM updateable too
|
|
# as this would cause COW-backed storage incoherency
|
|
raise QubesException ("TemaplteVM is updateable: cannot make the template based VM '{0}' updateable".format(self.name))
|
|
|
|
def create_config_file(self):
|
|
conf_template = open (self.template_vm.appvms_conf_file, "r")
|
|
if os.path.isfile(self.conf_file):
|
|
shutil.copy(self.conf_file, self.conf_file + ".backup")
|
|
conf_appvm = open(self.conf_file, "w")
|
|
rx_vmname = re.compile (r"%VMNAME%")
|
|
rx_vmdir = re.compile (r"%VMDIR%")
|
|
rx_template = re.compile (r"%TEMPLATEDIR%")
|
|
|
|
for line in conf_template:
|
|
line = rx_vmname.sub (self.name, line)
|
|
line = rx_vmdir.sub (self.dir_path, line)
|
|
line = rx_template.sub (self.template_vm.dir_path, line)
|
|
conf_appvm.write(line)
|
|
|
|
conf_template.close()
|
|
conf_appvm.close()
|
|
|
|
def create_on_disk(self, verbose):
|
|
if dry_run:
|
|
return
|
|
|
|
if verbose:
|
|
print "--> Creating directory: {0}".format(self.dir_path)
|
|
os.mkdir (self.dir_path)
|
|
|
|
if verbose:
|
|
print "--> Creating the VM config file: {0}".format(self.conf_file)
|
|
|
|
self.create_config_file()
|
|
|
|
template_priv = self.template_vm.private_img
|
|
if verbose:
|
|
print "--> Copying the template's private image: {0}".\
|
|
format(template_priv)
|
|
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", template_priv, self.private_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(template_priv, self.private_img))
|
|
|
|
def get_disk_utilization_root_img(self):
|
|
return 0
|
|
|
|
def get_root_img_sz(self):
|
|
return 0
|
|
|
|
def verify_files(self):
|
|
if dry_run:
|
|
return
|
|
|
|
if not os.path.exists (self.dir_path):
|
|
raise QubesException (
|
|
"VM directory doesn't exist: {0}".\
|
|
format(self.dir_path))
|
|
|
|
if not os.path.exists (self.conf_file):
|
|
raise QubesException (
|
|
"VM config file doesn't exist: {0}".\
|
|
format(self.conf_file))
|
|
|
|
if not os.path.exists (self.private_img):
|
|
raise QubesException (
|
|
"VM private image file doesn't exist: {0}".\
|
|
format(self.private_img))
|
|
return True
|
|
|
|
def start(self, debug_console = False, verbose = False, preparing_dvm = False):
|
|
if dry_run:
|
|
return
|
|
|
|
if self.is_running():
|
|
raise QubesException("VM is already running!")
|
|
|
|
if not self.is_updateable():
|
|
self.reset_cow_storage()
|
|
|
|
return super(QubesCowVm, self).start(debug_console=debug_console, verbose=verbose, preparing_dvm=preparing_dvm)
|
|
|
|
def reset_cow_storage (self):
|
|
|
|
print "--> Resetting the COW storage: {0}...".format (self.rootcow_img)
|
|
|
|
if dry_run:
|
|
return
|
|
# this is probbaly not needed, as open (..., "w") should remove the previous file
|
|
if os.path.exists (self.rootcow_img):
|
|
os.remove (self.rootcow_img)
|
|
|
|
|
|
f_cow = open (self.rootcow_img, "w")
|
|
f_root = open (self.template_vm.root_img, "r")
|
|
f_root.seek(0, os.SEEK_END)
|
|
f_cow.truncate (f_root.tell()) # make empty sparse file of the same size as root.img
|
|
f_cow.close ()
|
|
f_root.close()
|
|
|
|
def remove_from_disk(self):
|
|
if dry_run:
|
|
return
|
|
|
|
|
|
subprocess.check_call ([qubes_appmenu_remove_cmd, self.name])
|
|
shutil.rmtree (self.dir_path)
|
|
|
|
class QubesNetVm(QubesCowVm):
|
|
"""
|
|
A class that represents a NetVM. A child of QubesCowVM.
|
|
"""
|
|
def __init__(self, **kwargs):
|
|
netid = kwargs.pop("netid")
|
|
self.netid = netid
|
|
self.__network = "10.{0}.0.0".format(netid)
|
|
self.netprefix = "10.{0}.".format(netid)
|
|
self.__netmask = vm_default_netmask
|
|
self.__gateway = self.netprefix + "0.1"
|
|
self.__secondary_dns = self.netprefix + "255.254"
|
|
|
|
if "dir_path" not in kwargs or kwargs["dir_path"] is None:
|
|
kwargs["dir_path"] = qubes_servicevms_dir + "/" + kwargs["name"]
|
|
|
|
if "label" not in kwargs or kwargs["label"] is None:
|
|
kwargs["label"] = default_servicevm_label
|
|
super(QubesNetVm, self).__init__(installed_by_rpm=True, **kwargs)
|
|
|
|
@property
|
|
def type(self):
|
|
return "NetVM"
|
|
|
|
@property
|
|
def gateway(self):
|
|
return self.__gateway
|
|
|
|
@property
|
|
def secondary_dns(self):
|
|
return self.__secondary_dns
|
|
|
|
@property
|
|
def netmask(self):
|
|
return self.__netmask
|
|
|
|
@property
|
|
def network(self):
|
|
return self.__network
|
|
|
|
def get_ip_for_vm(self, qid):
|
|
hi = qid / 253
|
|
lo = qid % 253 + 2
|
|
assert hi >= 0 and hi <= 254 and lo >= 2 and lo <= 254, "Wrong IP address for VM"
|
|
return self.netprefix + "{0}.{1}".format(hi,lo)
|
|
|
|
def create_xml_element(self):
|
|
element = xml.etree.ElementTree.Element(
|
|
"QubesNetVm",
|
|
qid=str(self.qid),
|
|
netid=str(self.netid),
|
|
name=self.name,
|
|
dir_path=self.dir_path,
|
|
conf_file=self.conf_file,
|
|
template_qid=str(self.template_vm.qid),
|
|
updateable=str(self.updateable),
|
|
private_img=self.private_img,
|
|
installed_by_rpm=str(self.installed_by_rpm),
|
|
)
|
|
return element
|
|
|
|
class QubesProxyVm(QubesNetVm):
|
|
"""
|
|
A class that represents a ProxyVM, ex FirewallVM. A child of QubesNetVM.
|
|
"""
|
|
def __init__(self, **kwargs):
|
|
super(QubesProxyVm, self).__init__(uses_default_netvm=False, **kwargs)
|
|
|
|
@property
|
|
def type(self):
|
|
return "ProxyVM"
|
|
|
|
def create_xenstore_entries(self, xid):
|
|
if dry_run:
|
|
return
|
|
|
|
super(QubesProxyVm, self).create_xenstore_entries(xid)
|
|
self.write_iptables_xenstore_entry()
|
|
|
|
def write_iptables_xenstore_entry(self):
|
|
iptables = "# Generated by Qubes Core on {0}\n".format(datetime.now().ctime())
|
|
iptables += "*filter\n"
|
|
iptables += ":INPUT DROP [0:0]\n"
|
|
iptables += ":FORWARD DROP [0:0]\n"
|
|
iptables += ":OUTPUT ACCEPT [0:0]\n"
|
|
|
|
# Strict INPUT rules
|
|
iptables += "-A INPUT -i vif+ -p udp -m udp --dport 68 -j DROP\n"
|
|
iptables += "-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT\n"
|
|
iptables += "-A INPUT -p icmp -j ACCEPT\n"
|
|
iptables += "-A INPUT -i lo -j ACCEPT\n"
|
|
iptables += "-A INPUT -j REJECT --reject-with icmp-host-prohibited\n"
|
|
|
|
# Allow dom0 networking
|
|
iptables += "-A FORWARD -i vif0.0 -j ACCEPT\n"
|
|
|
|
qvm_collection = QubesVmCollection()
|
|
qvm_collection.lock_db_for_reading()
|
|
qvm_collection.load()
|
|
qvm_collection.unlock_db()
|
|
|
|
vms = [vm for vm in qvm_collection.values() if vm.is_appvm()]
|
|
for vm in vms:
|
|
conf = vm.get_firewall_conf()
|
|
|
|
xid = vm.get_xid()
|
|
if xid < 0: # VM not active ATM
|
|
continue
|
|
|
|
iptables += "# '{0}' VM:\n".format(vm.name)
|
|
|
|
if conf["allow"]:
|
|
iptables += "-A FORWARD ! -s {0}/32 -i vif{1}.0 -j DROP\n".format(vm.ip, xid)
|
|
|
|
allow_rules = 0
|
|
vm_iptables = ""
|
|
|
|
for rule in conf["rules"]:
|
|
if rule["allow"]:
|
|
allow_rules += 1
|
|
|
|
vm_iptables += "# .. {0}:\n".format(rule["name"])
|
|
|
|
vm_iptables += "-A FORWARD -i vif{0}.0 -d {1}".format(xid, rule["address"])
|
|
if rule["netmask"] != 32:
|
|
vm_iptables += "/{0}".format(rule["netmask"])
|
|
|
|
if rule["portBegin"] > 0:
|
|
vm_iptables += " -p tcp --dport {0}".format(rule["portBegin"])
|
|
if rule["portEnd"] is not None and rule["portEnd"] > rule["portBegin"]:
|
|
vm_iptables += ":{0}".format(rule["portEnd"])
|
|
|
|
vm_iptables += " -j {0}\n".format("ACCEPT" if rule["allow"]\
|
|
else "REJECT --reject-with icmp-host-prohibited",
|
|
)
|
|
|
|
iptables += vm_iptables
|
|
|
|
if allow_rules > 0:
|
|
iptables += "# .. Needs DNS access\n"
|
|
iptables += "-A FORWARD -i vif{0}.0 -p udp --dport 53 -j ACCEPT\n".format(xid)
|
|
iptables += "# .. Allow ICMP to test network connectivity\n"
|
|
iptables += "-A FORWARD -i vif{0}.0 -p icmp -j ACCEPT\n".format(xid)
|
|
iptables += "# .. Deny everything not allowed before\n"
|
|
iptables += "-A FORWARD -i vif{0}.0 -j DROP\n".format(xid)
|
|
else:
|
|
iptables += "# .. Allow everything not denied before\n"
|
|
iptables += "-A FORWARD -i vif{0}.0 -j ACCEPT\n".format(xid)
|
|
|
|
else:
|
|
iptables += "-A FORWARD -i vif{0}.0 -j DROP\n".format(xid)
|
|
|
|
iptables += "#End of VM rules\n"
|
|
iptables += "-A FORWARD -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT\n"
|
|
iptables += "-A FORWARD -j DROP\n"
|
|
|
|
iptables += "COMMIT"
|
|
|
|
return subprocess.check_call ([
|
|
"/usr/bin/xenstore-write",
|
|
"/local/domain/{0}/qubes_iptables".format(self.get_xid()),
|
|
iptables])
|
|
|
|
def create_xml_element(self):
|
|
element = xml.etree.ElementTree.Element(
|
|
"QubesProxyVm",
|
|
qid=str(self.qid),
|
|
netid=str(self.netid),
|
|
name=self.name,
|
|
dir_path=self.dir_path,
|
|
conf_file=self.conf_file,
|
|
template_qid=str(self.template_vm.qid),
|
|
updateable=str(self.updateable),
|
|
netvm_qid=str(self.netvm_vm.qid) if self.netvm_vm is not None else "none",
|
|
private_img=self.private_img,
|
|
installed_by_rpm=str(self.installed_by_rpm),
|
|
)
|
|
return element
|
|
|
|
class QubesDom0NetVm(QubesNetVm):
|
|
def __init__(self):
|
|
super(QubesDom0NetVm, self).__init__(qid=0, name="dom0", netid=0,
|
|
dir_path=None,
|
|
private_img = None,
|
|
template_vm = None,
|
|
label = default_template_label)
|
|
if not dry_run and xend_session.session is not None:
|
|
self.session_hosts = xend_session.session.xenapi.host.get_all()
|
|
self.session_cpus = xend_session.session.xenapi.host.get_host_CPUs(self.session_hosts[0])
|
|
|
|
|
|
def is_running(self):
|
|
return True
|
|
|
|
def get_cpu_total_load(self):
|
|
if dry_run:
|
|
import random
|
|
return random.random() * 100
|
|
|
|
cpu_total_load = 0.0
|
|
for cpu in self.session_cpus:
|
|
cpu_total_load += xend_session.session.xenapi.host_cpu.get_utilisation(cpu)
|
|
cpu_total_load /= len(self.session_cpus)
|
|
p = 100*cpu_total_load
|
|
if p > 100:
|
|
p = 100
|
|
return p
|
|
|
|
def get_mem(self):
|
|
|
|
# Unfortunately XenAPI provides only info about total memory, not the one actually usable by Dom0...
|
|
#session = get_xend_session_new_api()
|
|
#hosts = session.xenapi.host.get_all()
|
|
#metrics = session.xenapi.host.get_metrics(hosts[0])
|
|
#memory_total = int(session.xenapi.metrics.get_memory_total(metrics))
|
|
|
|
# ... so we must read /proc/meminfo, just like free command does
|
|
f = open ("/proc/meminfo")
|
|
for line in f:
|
|
match = re.match(r"^MemTotal\:\s*(\d+) kB", line)
|
|
if match is not None:
|
|
break
|
|
f.close()
|
|
assert match is not None
|
|
return int(match.group(1))*1024
|
|
|
|
def get_xid(self):
|
|
return 0
|
|
|
|
def get_power_state(self):
|
|
return "Running"
|
|
|
|
def get_disk_usage(self, file_or_dir):
|
|
return 0
|
|
|
|
def get_disk_utilization(self):
|
|
return 0
|
|
|
|
def get_disk_utilization_private_img(self):
|
|
return 0
|
|
|
|
def get_private_img_sz(self):
|
|
return 0
|
|
|
|
def start(self, debug_console = False, verbose = False):
|
|
raise QubesException ("Cannot start Dom0 fake domain!")
|
|
|
|
def create_xml_element(self):
|
|
return None
|
|
|
|
def verify_files(self):
|
|
return True
|
|
|
|
class QubesDisposableVm(QubesVm):
|
|
"""
|
|
A class that represents an DisposableVM. A child of QubesVm.
|
|
"""
|
|
def __init__(self, **kwargs):
|
|
|
|
template_vm = kwargs.pop("template_vm")
|
|
|
|
super(QubesDisposableVm, self).__init__(dir_path=None, **kwargs)
|
|
qid = kwargs["qid"]
|
|
|
|
assert template_vm is not None, "Missing template_vm for DisposableVM!"
|
|
if not template_vm.is_template():
|
|
print "ERROR: template_qid={0} doesn't point to a valid TempleteVM".\
|
|
format(new_vm.template_vm.qid)
|
|
return False
|
|
|
|
self.template_vm = template_vm
|
|
template_vm.appvms[qid] = self
|
|
|
|
@property
|
|
def type(self):
|
|
return "DisposableVM"
|
|
|
|
def create_xml_element(self):
|
|
element = xml.etree.ElementTree.Element(
|
|
"QubesDisposableVm",
|
|
qid=str(self.qid),
|
|
name=self.name,
|
|
template_qid=str(self.template_vm.qid),
|
|
label=self.label.name)
|
|
return element
|
|
|
|
def verify_files(self):
|
|
return True
|
|
|
|
|
|
class QubesAppVm(QubesCowVm):
|
|
"""
|
|
A class that represents an AppVM. A child of QubesVm.
|
|
"""
|
|
def __init__(self, **kwargs):
|
|
|
|
super(QubesAppVm, self).__init__(**kwargs)
|
|
dir_path = self.dir_path
|
|
|
|
self.swapcow_img = dir_path + "/" + default_swapcow_img
|
|
|
|
if "firewall_conf" not in kwargs or kwargs["firewall_conf"] is None:
|
|
kwargs["firewall_conf"] = dir_path + "/" + default_firewall_conf_file
|
|
|
|
self.firewall_conf = kwargs["firewall_conf"]
|
|
|
|
|
|
@property
|
|
def type(self):
|
|
return "AppVM"
|
|
|
|
def set_updateable(self):
|
|
|
|
super(QubesAppVm, self).set_updateable()
|
|
self.reset_swap_cow_storage()
|
|
|
|
def create_on_disk(self, verbose):
|
|
if dry_run:
|
|
return
|
|
|
|
super(QubesAppVm, self).create_on_disk(verbose)
|
|
|
|
if verbose:
|
|
print "--> Creating icon symlink: {0} -> {1}".format(self.icon_path, self.label.icon_path)
|
|
os.symlink (self.label.icon_path, self.icon_path)
|
|
|
|
self.create_appmenus (verbose)
|
|
|
|
def create_appmenus(self, verbose):
|
|
subprocess.check_call ([qubes_appmenu_create_cmd, self.template_vm.appmenus_templates_dir, self.name])
|
|
|
|
def write_firewall_conf(self, conf):
|
|
root = xml.etree.ElementTree.Element(
|
|
"QubesFirwallRules",
|
|
policy="allow" if conf["allow"] else "deny"
|
|
)
|
|
|
|
for rule in conf["rules"]:
|
|
element = xml.etree.ElementTree.Element(
|
|
"allow" if rule["allow"] else "deny",
|
|
name=rule["name"],
|
|
address=rule["address"],
|
|
netmask=str(rule["netmask"]),
|
|
port=str(rule["portBegin"]),
|
|
)
|
|
if rule["portEnd"] is not None:
|
|
element.set("toport", str(rule["portEnd"]))
|
|
root.append(element)
|
|
|
|
tree = xml.etree.ElementTree.ElementTree(root)
|
|
|
|
try:
|
|
f = open(self.firewall_conf, 'a') # create the file if not exist
|
|
f.close()
|
|
|
|
with open(self.firewall_conf, 'w') as f:
|
|
fcntl.lockf(f, fcntl.LOCK_EX)
|
|
tree.write(f, "UTF-8")
|
|
fcntl.lockf(f, fcntl.LOCK_UN)
|
|
f.close()
|
|
except EnvironmentError as err:
|
|
print "{0}: save error: {1}".format(
|
|
os.path.basename(sys.argv[0]), err)
|
|
return False
|
|
|
|
return True
|
|
|
|
def get_firewall_conf(self):
|
|
conf = { "allow": True, "rules": list() }
|
|
|
|
try:
|
|
tree = xml.etree.ElementTree.parse(self.firewall_conf)
|
|
root = tree.getroot()
|
|
|
|
for element in root:
|
|
rule = { "allow": element.tag=="allow" }
|
|
|
|
attr_list = ("name", "address", "netmask", "port", "toport")
|
|
|
|
for attribute in attr_list:
|
|
rule[attribute] = element.get(attribute)
|
|
|
|
rule["netmask"] = int(rule["netmask"])
|
|
rule["portBegin"] = int(rule["port"])
|
|
if rule["toport"] is not None:
|
|
rule["portEnd"] = int(rule["toport"])
|
|
else:
|
|
rule["portEnd"] = None
|
|
del(rule["port"])
|
|
del(rule["toport"])
|
|
|
|
conf["rules"].append(rule)
|
|
|
|
except (EnvironmentError) as err:
|
|
return conf
|
|
except (xml.parsers.expat.ExpatError,
|
|
ValueError, LookupError) as err:
|
|
print("{0}: load error: {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return None
|
|
|
|
return conf
|
|
|
|
def create_xml_element(self):
|
|
element = xml.etree.ElementTree.Element(
|
|
"QubesAppVm",
|
|
qid=str(self.qid),
|
|
name=self.name,
|
|
dir_path=self.dir_path,
|
|
conf_file=self.conf_file,
|
|
template_qid=str(self.template_vm.qid),
|
|
uses_default_netvm=str(self.uses_default_netvm),
|
|
netvm_qid=str(self.netvm_vm.qid) if self.netvm_vm is not None else "none",
|
|
private_img=self.private_img,
|
|
installed_by_rpm=str(self.installed_by_rpm),
|
|
updateable=str(self.updateable),
|
|
label=self.label.name)
|
|
return element
|
|
|
|
def start(self, debug_console = False, verbose = False, preparing_dvm = False):
|
|
if dry_run:
|
|
return
|
|
|
|
self.reset_swap_cow_storage()
|
|
|
|
return super(QubesAppVm, self).start(debug_console=debug_console, verbose=verbose, preparing_dvm=preparing_dvm)
|
|
|
|
def reset_swap_cow_storage (self):
|
|
print "--> Resetting the swap COW storage: {0}...".format (self.swapcow_img)
|
|
if os.path.exists (self.swapcow_img):
|
|
os.remove (self.swapcow_img)
|
|
|
|
f_swap_cow = open (self.swapcow_img, "w")
|
|
f_swap_cow.truncate (swap_cow_sz)
|
|
f_swap_cow.close()
|
|
|
|
class QubesVmCollection(dict):
|
|
"""
|
|
A collection of Qubes VMs indexed by Qubes id (qid)
|
|
"""
|
|
|
|
def __init__(self, store_filename=qubes_store_filename):
|
|
super(QubesVmCollection, self).__init__()
|
|
self.default_netvm_qid = None
|
|
self.default_fw_netvm_qid = None
|
|
self.default_template_qid = None
|
|
self.qubes_store_filename = store_filename
|
|
|
|
def values(self):
|
|
for qid in self.keys():
|
|
yield self[qid]
|
|
|
|
def items(self):
|
|
for qid in self.keys():
|
|
yield (qid, self[qid])
|
|
|
|
def __iter__(self):
|
|
for qid in sorted(super(QubesVmCollection, self).keys()):
|
|
yield qid
|
|
|
|
keys = __iter__
|
|
|
|
def __setitem__(self, key, value):
|
|
if key not in self:
|
|
return super(QubesVmCollection, self).__setitem__(key, value)
|
|
else:
|
|
assert False, "Attempt to add VM with qid that already exists in the collection!"
|
|
|
|
|
|
def add_new_appvm(self, name, template_vm,
|
|
dir_path = None, conf_file = None,
|
|
private_img = None,
|
|
label = None):
|
|
|
|
qid = self.get_new_unused_qid()
|
|
vm = QubesAppVm (qid=qid, name=name, template_vm=template_vm,
|
|
dir_path=dir_path, conf_file=conf_file,
|
|
private_img=private_img,
|
|
netvm_vm = self.get_default_netvm_vm(),
|
|
label=label)
|
|
|
|
if not self.verify_new_vm (vm):
|
|
assert False, "Wrong VM description!"
|
|
self[vm.qid]=vm
|
|
return vm
|
|
|
|
def add_new_disposablevm(self, name, template_vm,
|
|
label = None):
|
|
|
|
qid = self.get_new_unused_qid()
|
|
vm = QubesDisposableVm (qid=qid, name=name, template_vm=template_vm,
|
|
netvm_vm = self.get_default_netvm_vm(),
|
|
label=label)
|
|
|
|
if not self.verify_new_vm (vm):
|
|
assert False, "Wrong VM description!"
|
|
self[vm.qid]=vm
|
|
return vm
|
|
|
|
def add_new_templatevm(self, name,
|
|
dir_path = None, conf_file = None,
|
|
root_img = None, private_img = None,
|
|
installed_by_rpm = True):
|
|
|
|
qid = self.get_new_unused_qid()
|
|
vm = QubesTemplateVm (qid=qid, name=name,
|
|
dir_path=dir_path, conf_file=conf_file,
|
|
root_img=root_img, private_img=private_img,
|
|
installed_by_rpm=installed_by_rpm,
|
|
netvm_vm = self.get_default_netvm_vm())
|
|
|
|
if not self.verify_new_vm (vm):
|
|
assert False, "Wrong VM description!"
|
|
self[vm.qid]=vm
|
|
|
|
if self.default_template_qid is None:
|
|
self.set_default_template_vm(vm)
|
|
|
|
return vm
|
|
|
|
def clone_templatevm(self, src_template_vm, name, dir_path = None, verbose = False):
|
|
|
|
assert not src_template_vm.is_running(), "Attempt to clone a running Template VM!"
|
|
|
|
vm = self.add_new_templatevm (name=name, dir_path=dir_path, installed_by_rpm = False)
|
|
|
|
return vm
|
|
|
|
|
|
def add_new_netvm(self, name, template_vm,
|
|
dir_path = None, conf_file = None,
|
|
root_img = None):
|
|
|
|
qid = self.get_new_unused_qid()
|
|
netid = self.get_new_unused_netid()
|
|
vm = QubesNetVm (qid=qid, name=name, template_vm=template_vm,
|
|
netid=netid,
|
|
dir_path=dir_path, conf_file=conf_file,
|
|
root_img=root_img)
|
|
|
|
if not self.verify_new_vm (vm):
|
|
assert False, "Wrong VM description!"
|
|
self[vm.qid]=vm
|
|
|
|
if self.default_fw_netvm_qid is None:
|
|
self.set_default_fw_netvm_vm(vm)
|
|
|
|
return vm
|
|
|
|
def add_new_proxyvm(self, name, template_vm,
|
|
dir_path = None, conf_file = None,
|
|
root_img = None):
|
|
|
|
qid = self.get_new_unused_qid()
|
|
netid = self.get_new_unused_netid()
|
|
vm = QubesProxyVm (qid=qid, name=name, template_vm=template_vm,
|
|
netid=netid,
|
|
dir_path=dir_path, conf_file=conf_file,
|
|
netvm_vm = self.get_default_fw_netvm_vm(),
|
|
root_img=root_img)
|
|
|
|
if not self.verify_new_vm (vm):
|
|
assert False, "Wrong VM description!"
|
|
self[vm.qid]=vm
|
|
|
|
if self.default_netvm_qid is None:
|
|
self.set_default_netvm_vm(vm)
|
|
|
|
return vm
|
|
|
|
def set_default_template_vm(self, vm):
|
|
assert vm.is_template(), "VM {0} is not a TempleteVM!".format(vm.name)
|
|
self.default_template_qid = vm.qid
|
|
|
|
def get_default_template_vm(self):
|
|
if self.default_template_qid is None:
|
|
return None
|
|
else:
|
|
return self[self.default_template_qid]
|
|
|
|
def set_default_netvm_vm(self, vm):
|
|
assert vm.is_netvm(), "VM {0} does not provide network!".format(vm.name)
|
|
self.default_netvm_qid = vm.qid
|
|
|
|
def get_default_netvm_vm(self):
|
|
if self.default_netvm_qid is None:
|
|
return None
|
|
else:
|
|
return self[self.default_netvm_qid]
|
|
|
|
def set_default_fw_netvm_vm(self, vm):
|
|
assert vm.is_netvm(), "VM {0} does not provide network!".format(vm.name)
|
|
self.default_fw_netvm_qid = vm.qid
|
|
|
|
def get_default_fw_netvm_vm(self):
|
|
if self.default_fw_netvm_qid is None:
|
|
return None
|
|
else:
|
|
return self[self.default_fw_netvm_qid]
|
|
|
|
def get_vm_by_name(self, name):
|
|
for vm in self.values():
|
|
if (vm.name == name):
|
|
return vm
|
|
return None
|
|
|
|
def get_qid_by_name(self, name):
|
|
vm = self.get_vm_by_name(name)
|
|
return vm.qid if vm is not None else None
|
|
|
|
def get_vms_based_on(self, template_qid):
|
|
vms = set([vm for vm in self.values()
|
|
if (vm.is_appvm() and vm.template_vm.qid == template_qid)])
|
|
return vms
|
|
|
|
def verify_new_vm(self, new_vm):
|
|
|
|
# Verify that qid is unique
|
|
for vm in self.values():
|
|
if vm.qid == new_vm.qid:
|
|
print "ERROR: The qid={0} is already used by VM '{1}'!".\
|
|
format(vm.qid, vm.name)
|
|
return False
|
|
|
|
# Verify that name is unique
|
|
for vm in self.values():
|
|
if vm.name == new_vm.name:
|
|
print "ERROR: The name={0} is already used by other VM with qid='{1}'!".\
|
|
format(vm.name, vm.qid)
|
|
return False
|
|
|
|
return True
|
|
|
|
def get_new_unused_qid(self):
|
|
used_ids = set([vm.qid for vm in self.values()])
|
|
for id in range (1, qubes_max_qid):
|
|
if id not in used_ids:
|
|
return id
|
|
raise LookupError ("Cannot find unused qid!")
|
|
|
|
def get_new_unused_netid(self):
|
|
used_ids = set([vm.netid for vm in self.values() if vm.is_netvm()])
|
|
for id in range (1, qubes_max_netid):
|
|
if id not in used_ids:
|
|
return id
|
|
raise LookupError ("Cannot find unused netid!")
|
|
|
|
|
|
def check_if_storage_exists(self):
|
|
try:
|
|
f = open (self.qubes_store_filename, 'r')
|
|
except IOError:
|
|
return False
|
|
f.close()
|
|
return True
|
|
|
|
def create_empty_storage(self):
|
|
self.qubes_store_file = open (self.qubes_store_filename, 'w')
|
|
self.clear()
|
|
self.save()
|
|
|
|
def lock_db_for_reading(self):
|
|
self.qubes_store_file = open (self.qubes_store_filename, 'r')
|
|
fcntl.lockf (self.qubes_store_file, fcntl.LOCK_SH)
|
|
|
|
def lock_db_for_writing(self):
|
|
self.qubes_store_file = open (self.qubes_store_filename, 'r+')
|
|
fcntl.lockf (self.qubes_store_file, fcntl.LOCK_EX)
|
|
|
|
def unlock_db(self):
|
|
fcntl.lockf (self.qubes_store_file, fcntl.LOCK_UN)
|
|
self.qubes_store_file.close()
|
|
|
|
def save(self):
|
|
root = xml.etree.ElementTree.Element(
|
|
"QubesVmCollection",
|
|
|
|
default_template=str(self.default_template_qid) \
|
|
if self.default_template_qid is not None else "None",
|
|
|
|
default_netvm=str(self.default_netvm_qid) \
|
|
if self.default_netvm_qid is not None else "None"
|
|
)
|
|
|
|
for vm in self.values():
|
|
element = vm.create_xml_element()
|
|
if element is not None:
|
|
root.append(element)
|
|
tree = xml.etree.ElementTree.ElementTree(root)
|
|
|
|
try:
|
|
|
|
# We need to manually truncate the file, as we open the
|
|
# file as "r+" in the lock_db_for_writing() function
|
|
self.qubes_store_file.seek (0, os.SEEK_SET)
|
|
self.qubes_store_file.truncate()
|
|
tree.write(self.qubes_store_file, "UTF-8")
|
|
except EnvironmentError as err:
|
|
print("{0}: export error: {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
return True
|
|
|
|
def load(self):
|
|
self.clear()
|
|
|
|
dom0vm = QubesDom0NetVm ()
|
|
self[dom0vm.qid] = dom0vm
|
|
self.default_netvm_qid = 0
|
|
|
|
global dom0_vm
|
|
dom0_vm = dom0vm
|
|
|
|
try:
|
|
tree = xml.etree.ElementTree.parse(self.qubes_store_file)
|
|
except (EnvironmentError,
|
|
xml.parsers.expat.ExpatError) as err:
|
|
print("{0}: import error: {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
element = tree.getroot()
|
|
default_template = element.get("default_template")
|
|
self.default_template_qid = int(default_template) \
|
|
if default_template != "None" else None
|
|
|
|
default_netvm = element.get("default_netvm")
|
|
if default_netvm is not None:
|
|
self.default_netvm_qid = int(default_netvm) \
|
|
if default_netvm != "None" else None
|
|
#assert self.default_netvm_qid is not None
|
|
|
|
# Then, read in the TemplateVMs, because a reference to template VM
|
|
# is needed to create each AppVM
|
|
for element in tree.findall("QubesTemplateVm"):
|
|
try:
|
|
|
|
kwargs = {}
|
|
attr_list = ("qid", "name", "dir_path", "conf_file",
|
|
"appvms_conf_file", "private_img", "root_img",
|
|
"installed_by_rpm", "updateable",
|
|
"uses_default_netvm", "netvm_qid")
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
kwargs["qid"] = int(kwargs["qid"])
|
|
kwargs["installed_by_rpm"] = True if kwargs["installed_by_rpm"] == "True" else False
|
|
if kwargs["updateable"] is not None:
|
|
kwargs["updateable"] = True if kwargs["updateable"] == "True" else False
|
|
|
|
if "uses_default_netvm" not in kwargs:
|
|
kwargs["uses_default_netvm"] = True
|
|
else:
|
|
kwargs["uses_default_netvm"] = True if kwargs["uses_default_netvm"] == "True" else False
|
|
if kwargs["uses_default_netvm"] is True:
|
|
netvm_vm = self.get_default_netvm_vm()
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
if kwargs["netvm_qid"] == "none" or kwargs["netvm_qid"] is None:
|
|
netvm_vm = None
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
netvm_qid = int(kwargs.pop("netvm_qid"))
|
|
if netvm_qid not in self:
|
|
netvm_vm = None
|
|
else:
|
|
netvm_vm = self[netvm_qid]
|
|
|
|
kwargs["netvm_vm"] = netvm_vm
|
|
|
|
vm = QubesTemplateVm(**kwargs)
|
|
|
|
self[vm.qid] = vm
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (QubesTemplateVm): {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
# Read in the NetVMs first, because a reference to NetVM
|
|
# is needed to create all other VMs
|
|
for element in tree.findall("QubesNetVm"):
|
|
try:
|
|
kwargs = {}
|
|
attr_list = ("qid", "netid", "name", "dir_path", "conf_file",
|
|
"private_img", "root_img", "template_qid",
|
|
)
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
kwargs["qid"] = int(kwargs["qid"])
|
|
kwargs["template_qid"] = int(kwargs["template_qid"])
|
|
if kwargs["updateable"] is not None:
|
|
kwargs["updateable"] = True if kwargs["updateable"] == "True" else False
|
|
|
|
template_vm = self[kwargs.pop("template_qid")]
|
|
if template_vm is None:
|
|
print "ERROR: NetVM '{0}' uses unkown template qid='{1}'!".\
|
|
format(kwargs["name"], kwargs["template_qid"])
|
|
|
|
kwargs["template_vm"] = template_vm
|
|
kwargs["netid"] = int(kwargs["netid"])
|
|
|
|
vm = QubesNetVm(**kwargs)
|
|
self[vm.qid] = vm
|
|
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (QubesNetVM) {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
# Next read in the ProxyVMs, because they may be referenced
|
|
# by other VMs
|
|
for element in tree.findall("QubesProxyVm"):
|
|
try:
|
|
kwargs = {}
|
|
attr_list = ("qid", "netid", "name", "dir_path", "conf_file",
|
|
"private_img", "root_img", "netvm_qid", "template_qid")
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
kwargs["qid"] = int(kwargs["qid"])
|
|
kwargs["template_qid"] = int(kwargs["template_qid"])
|
|
if kwargs["updateable"] is not None:
|
|
kwargs["updateable"] = True if kwargs["updateable"] == "True" else False
|
|
|
|
template_vm = self[kwargs.pop("template_qid")]
|
|
if template_vm is None:
|
|
print "ERROR: ProxyVM '{0}' uses unkown template qid='{1}'!".\
|
|
format(kwargs["name"], kwargs["template_qid"])
|
|
|
|
kwargs["template_vm"] = template_vm
|
|
kwargs["netid"] = int(kwargs["netid"])
|
|
|
|
if kwargs["netvm_qid"] == "none" or kwargs["netvm_qid"] is None:
|
|
netvm_vm = None
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
netvm_qid = int(kwargs.pop("netvm_qid"))
|
|
if netvm_qid not in self:
|
|
netvm_vm = None
|
|
else:
|
|
netvm_vm = self[netvm_qid]
|
|
|
|
kwargs["netvm_vm"] = netvm_vm
|
|
|
|
vm = QubesProxyVm(**kwargs)
|
|
self[vm.qid] = vm
|
|
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (QubesProxyVM) {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
# After importing all NetVMs and ProxyVMs, set netvm references
|
|
# 1. For TemplateVMs
|
|
for element in tree.findall("QubesTemplateVm"):
|
|
try:
|
|
|
|
kwargs = {}
|
|
attr_list = ("qid", "uses_default_netvm", "netvm_qid")
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
vm = self[int(kwargs["qid"])]
|
|
|
|
if "uses_default_netvm" not in kwargs:
|
|
vm.uses_default_netvm = True
|
|
else:
|
|
vm.uses_default_netvm = True if kwargs["uses_default_netvm"] == "True" else False
|
|
if vm.uses_default_netvm is True:
|
|
netvm_vm = self.get_default_netvm_vm()
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
if kwargs["netvm_qid"] == "none" or kwargs["netvm_qid"] is None:
|
|
netvm_vm = None
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
netvm_qid = int(kwargs.pop("netvm_qid"))
|
|
if netvm_qid not in self:
|
|
netvm_vm = None
|
|
else:
|
|
netvm_vm = self[netvm_qid]
|
|
|
|
vm.netvm_vm = netvm_vm
|
|
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (QubesTemplateVm): {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
# 2. For PoxyVMs
|
|
for element in tree.findall("QubesProxyVm"):
|
|
try:
|
|
kwargs = {}
|
|
attr_list = ("qid", "netvm_qid")
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
vm = self[int(kwargs["qid"])]
|
|
|
|
if kwargs["netvm_qid"] == "none" or kwargs["netvm_qid"] is None:
|
|
netvm_vm = None
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
netvm_qid = int(kwargs.pop("netvm_qid"))
|
|
if netvm_qid not in self:
|
|
netvm_vm = None
|
|
else:
|
|
netvm_vm = self[netvm_qid]
|
|
|
|
vm.netvm_vm = netvm_vm
|
|
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (QubesProxyVM) {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
# Finally, read in the AppVMs
|
|
for element in tree.findall("QubesAppVm"):
|
|
try:
|
|
kwargs = {}
|
|
attr_list = ("qid", "name", "dir_path", "conf_file",
|
|
"private_img", "template_qid",
|
|
"updateable", "label", "netvm_qid",
|
|
"uses_default_netvm")
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
kwargs["qid"] = int(kwargs["qid"])
|
|
kwargs["template_qid"] = int(kwargs["template_qid"])
|
|
if kwargs["updateable"] is not None:
|
|
kwargs["updateable"] = True if kwargs["updateable"] == "True" else False
|
|
|
|
template_vm = self[kwargs.pop("template_qid")]
|
|
if template_vm is None:
|
|
print "ERROR: AppVM '{0}' uses unkown template qid='{1}'!".\
|
|
format(kwargs["name"], kwargs["template_qid"])
|
|
|
|
kwargs["template_vm"] = template_vm
|
|
|
|
if "uses_default_netvm" not in kwargs:
|
|
kwargs["uses_default_netvm"] = True
|
|
else:
|
|
kwargs["uses_default_netvm"] = True if kwargs["uses_default_netvm"] == "True" else False
|
|
if kwargs["uses_default_netvm"] is True:
|
|
netvm_vm = self.get_default_netvm_vm()
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
if kwargs["netvm_qid"] == "none" or kwargs["netvm_qid"] is None:
|
|
netvm_vm = None
|
|
kwargs.pop("netvm_qid")
|
|
else:
|
|
netvm_qid = int(kwargs.pop("netvm_qid"))
|
|
if netvm_qid not in self:
|
|
netvm_vm = None
|
|
else:
|
|
netvm_vm = self[netvm_qid]
|
|
|
|
kwargs["netvm_vm"] = netvm_vm
|
|
|
|
if kwargs["label"] is not None:
|
|
if kwargs["label"] not in QubesVmLabels:
|
|
print "ERROR: incorrect label for VM '{0}'".format(kwargs["name"])
|
|
kwargs.pop ("label")
|
|
else:
|
|
kwargs["label"] = QubesVmLabels[kwargs["label"]]
|
|
|
|
vm = QubesAppVm(**kwargs)
|
|
|
|
self[vm.qid] = vm
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (QubesAppVm): {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
# Really finally, read in the DisposableVMs
|
|
for element in tree.findall("QubesDisposableVm"):
|
|
try:
|
|
kwargs = {}
|
|
attr_list = ("qid", "name",
|
|
"template_qid",
|
|
"label")
|
|
|
|
for attribute in attr_list:
|
|
kwargs[attribute] = element.get(attribute)
|
|
|
|
kwargs["qid"] = int(kwargs["qid"])
|
|
kwargs["template_qid"] = int(kwargs["template_qid"])
|
|
|
|
template_vm = self[kwargs.pop("template_qid")]
|
|
if template_vm is None:
|
|
print "ERROR: DisposableVM '{0}' uses unkown template qid='{1}'!".\
|
|
format(kwargs["name"], kwargs["template_qid"])
|
|
|
|
kwargs["template_vm"] = template_vm
|
|
kwargs["netvm_vm"] = self.get_default_netvm_vm()
|
|
|
|
if kwargs["label"] is not None:
|
|
if kwargs["label"] not in QubesVmLabels:
|
|
print "ERROR: incorrect label for VM '{0}'".format(kwargs["name"])
|
|
kwargs.pop ("label")
|
|
else:
|
|
kwargs["label"] = QubesVmLabels[kwargs["label"]]
|
|
|
|
vm = QubesDisposableVm(**kwargs)
|
|
|
|
self[vm.qid] = vm
|
|
except (ValueError, LookupError) as err:
|
|
print("{0}: import error (DisposableAppVm): {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return False
|
|
|
|
return True
|
|
|
|
|
|
|
|
|
|
class QubesDaemonPidfile(object):
|
|
def __init__(self, name):
|
|
self.name = name
|
|
self.path = "/var/run/qubes/" + name + ".pid"
|
|
|
|
def create_pidfile(self):
|
|
f = open (self.path, 'w')
|
|
f.write(str(os.getpid()))
|
|
f.close()
|
|
|
|
def pidfile_exists(self):
|
|
return os.path.exists(self.path)
|
|
|
|
def read_pid(self):
|
|
f = open (self.path)
|
|
pid = f.read ().strip()
|
|
f.close()
|
|
return int(pid)
|
|
|
|
def pidfile_is_stale(self):
|
|
if not self.pidfile_exists():
|
|
return False
|
|
|
|
# check if the pid file is valid...
|
|
proc_path = "/proc/" + str(self.read_pid()) + "/cmdline"
|
|
if not os.path.exists (proc_path):
|
|
print "Path {0} doesn't exist, assuming stale pidfile.".format(proc_path)
|
|
return True
|
|
|
|
f = open (proc_path)
|
|
cmdline = f.read ()
|
|
f.close()
|
|
|
|
# The following doesn't work with python -- one would have to get argv[1] and compare it with self.name...
|
|
# if not cmdline.strip().endswith(self.name):
|
|
# print "{0} = {1} doesn't seem to point to our process ({2}), assuming stale pidile.".format(proc_path, cmdline, self.name)
|
|
# return True
|
|
|
|
return False # It's a good pidfile
|
|
|
|
def remove_pidfile(self):
|
|
os.remove (self.path)
|
|
|
|
def __enter__ (self):
|
|
# assumes the pidfile doesn't exist -- you should ensure it before opening the context
|
|
self.create_pidfile()
|
|
def __exit__ (self):
|
|
self.remove_pidfile()
|
|
|
|
|
|
# vim:sw=4:et:
|