mirror of
https://github.com/virt-manager/virt-manager.git
synced 2024-12-23 17:34:21 +03:00
149 lines
4.9 KiB
Python
149 lines
4.9 KiB
Python
#
|
|
# Copyright 2011, 2013 Red Hat, Inc.
|
|
#
|
|
# This work is licensed under the GNU GPLv2 or later.
|
|
# See the COPYING file in the top-level directory.
|
|
|
|
import os
|
|
|
|
from .device import Device
|
|
from ..xmlbuilder import XMLProperty
|
|
|
|
|
|
class DeviceFilesystem(Device):
|
|
XML_NAME = "filesystem"
|
|
_XML_PROP_ORDER = ["_type_prop", "accessmode", "fmode", "dmode"]
|
|
|
|
TYPE_MOUNT = "mount"
|
|
TYPE_TEMPLATE = "template"
|
|
TYPE_FILE = "file"
|
|
TYPE_BLOCK = "block"
|
|
TYPE_RAM = "ram"
|
|
|
|
MODE_MAPPED = "mapped"
|
|
MODE_SQUASH = "squash"
|
|
|
|
DRIVER_LOOP = "loop"
|
|
DRIVER_NBD = "nbd"
|
|
|
|
_type_prop = XMLProperty("./@type")
|
|
accessmode = XMLProperty("./@accessmode")
|
|
model = XMLProperty("./@model")
|
|
multidevs = XMLProperty("./@multidevs")
|
|
fmode = XMLProperty("./@fmode")
|
|
dmode = XMLProperty("./@dmode")
|
|
|
|
readonly = XMLProperty("./readonly", is_bool=True)
|
|
space_hard_limit = XMLProperty("./space_hard_limit")
|
|
space_soft_limit = XMLProperty("./space_soft_limit")
|
|
|
|
driver_wrpolicy = XMLProperty("./driver/@wrpolicy")
|
|
driver_type = XMLProperty("./driver/@type")
|
|
driver_format = XMLProperty("./driver/@format")
|
|
driver_queue = XMLProperty("./driver/@queue")
|
|
driver_name = XMLProperty("./driver/@name")
|
|
|
|
target_dir = XMLProperty("./target/@dir")
|
|
|
|
source_dir = XMLProperty("./source/@dir")
|
|
source_name = XMLProperty("./source/@name")
|
|
source_file = XMLProperty("./source/@file")
|
|
source_dev = XMLProperty("./source/@dev")
|
|
source_usage = XMLProperty("./source/@usage")
|
|
source_units = XMLProperty("./source/@units")
|
|
source_pool = XMLProperty("./source/@pool")
|
|
source_volume = XMLProperty("./source/@volume")
|
|
source_socket = XMLProperty("./source/socket")
|
|
|
|
binary_path = XMLProperty("./binary/@path")
|
|
binary_xattr = XMLProperty("./binary/@xattr", is_onoff=True)
|
|
binary_cache_mode = XMLProperty("./binary/cache/@mode")
|
|
binary_lock_posix = XMLProperty("./binary/lock/@posix", is_onoff=True)
|
|
binary_lock_flock = XMLProperty("./binary/lock/@flock", is_onoff=True)
|
|
binary_sandbox_mode = XMLProperty("./binary/sandbox/@mode")
|
|
|
|
def _type_to_source_prop(self):
|
|
if self.type == DeviceFilesystem.TYPE_TEMPLATE:
|
|
return "source_name"
|
|
elif self.type == DeviceFilesystem.TYPE_FILE:
|
|
return "source_file"
|
|
elif self.type == DeviceFilesystem.TYPE_BLOCK:
|
|
return "source_dev"
|
|
elif self.type == DeviceFilesystem.TYPE_RAM:
|
|
return "source_usage"
|
|
else:
|
|
return "source_dir"
|
|
|
|
def _get_source(self):
|
|
return getattr(self, self._type_to_source_prop())
|
|
def _set_source(self, val):
|
|
return setattr(self, self._type_to_source_prop(), val)
|
|
source = property(_get_source, _set_source)
|
|
|
|
def _get_target(self):
|
|
return self.target_dir
|
|
def _set_target(self, val):
|
|
self.target_dir = val
|
|
target = property(_get_target, _set_target)
|
|
|
|
def _get_type(self):
|
|
return getattr(self, '_type_prop')
|
|
def _set_type(self, val):
|
|
# Get type/value of the attribute of "source" property
|
|
old_source_type = self._type_to_source_prop()
|
|
old_source_value = self.source
|
|
|
|
# Update "type" property
|
|
new_type = setattr(self, '_type_prop', val)
|
|
|
|
# If the attribute type of 'source' property has changed
|
|
# restore the value
|
|
if old_source_type != self._type_to_source_prop():
|
|
self.source = old_source_value
|
|
|
|
return new_type
|
|
|
|
type = property(_get_type, _set_type)
|
|
|
|
|
|
##############
|
|
# Validation #
|
|
##############
|
|
|
|
def validate_target(self, target):
|
|
# In case of qemu for default fs type (mount) target is not
|
|
# actually a directory, it is merely a arbitrary string tag
|
|
# that is exported to the guest as a hint for where to mount
|
|
if ((self.conn.is_qemu() or self.conn.is_test()) and
|
|
(self.type is None or
|
|
self.type == self.TYPE_MOUNT)):
|
|
return
|
|
|
|
if not os.path.isabs(target):
|
|
raise ValueError(_("Filesystem target '%s' must be an absolute "
|
|
"path") % target)
|
|
|
|
def validate(self):
|
|
if self.target:
|
|
self.validate_target(self.target)
|
|
|
|
|
|
##################
|
|
# Default config #
|
|
##################
|
|
|
|
def set_defaults(self, guest):
|
|
ignore = guest
|
|
|
|
if self.conn.is_qemu() or self.conn.is_lxc() or self.conn.is_test():
|
|
# type=mount is the libvirt default. But hardcode it
|
|
# here since we need it for the accessmode check
|
|
if self.type is None:
|
|
self.type = self.TYPE_MOUNT
|
|
|
|
# libvirt qemu defaults to accessmode=passthrough, but that
|
|
# really only works well for qemu running as root, which is
|
|
# not the common case. so use mode=mapped
|
|
if self.accessmode is None:
|
|
self.accessmode = self.MODE_MAPPED
|