219 lines
7.3 KiB
Python
219 lines
7.3 KiB
Python
#
|
|
# Copyright 2011 Red Hat, Inc.
|
|
# Cole Robinson <crobinso@redhat.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
|
|
|
|
from virtinst.VirtualDevice import VirtualDevice
|
|
from virtinst.xmlbuilder import XMLProperty
|
|
|
|
|
|
class VirtualFilesystem(VirtualDevice):
|
|
|
|
_virtual_device_type = VirtualDevice.VIRTUAL_DEV_FILESYSTEM
|
|
|
|
_target_props = ["dir", "name", "file", "dev"]
|
|
|
|
TYPE_MOUNT = "mount"
|
|
TYPE_TEMPLATE = "template"
|
|
TYPE_FILE = "file"
|
|
TYPE_BLOCK = "block"
|
|
TYPE_DEFAULT = "default"
|
|
TYPES = [TYPE_MOUNT, TYPE_TEMPLATE, TYPE_FILE, TYPE_BLOCK, TYPE_DEFAULT]
|
|
|
|
MODE_PASSTHROUGH = "passthrough"
|
|
MODE_MAPPED = "mapped"
|
|
MODE_SQUASH = "squash"
|
|
MODE_DEFAULT = "default"
|
|
MOUNT_MODES = [MODE_PASSTHROUGH, MODE_MAPPED, MODE_SQUASH, MODE_DEFAULT]
|
|
|
|
WRPOLICY_IMM = "immediate"
|
|
WRPOLICY_DEFAULT = "default"
|
|
WRPOLICIES = [WRPOLICY_IMM, WRPOLICY_DEFAULT]
|
|
|
|
DRIVER_PATH = "path"
|
|
DRIVER_HANDLE = "handle"
|
|
DRIVER_PROXY = "proxy"
|
|
DRIVER_DEFAULT = "default"
|
|
DRIVER_TYPES = [DRIVER_PATH, DRIVER_HANDLE, DRIVER_PROXY, DRIVER_DEFAULT]
|
|
|
|
@staticmethod
|
|
def type_to_source_prop(fs_type):
|
|
"""
|
|
Convert a value of VirtualFilesystem.type to it's associated XML
|
|
source @prop name
|
|
"""
|
|
if (fs_type == VirtualFilesystem.TYPE_MOUNT or
|
|
fs_type == VirtualFilesystem.TYPE_DEFAULT or
|
|
fs_type is None):
|
|
return "dir"
|
|
elif fs_type == VirtualFilesystem.TYPE_TEMPLATE:
|
|
return "name"
|
|
elif fs_type == VirtualFilesystem.TYPE_FILE:
|
|
return "file"
|
|
elif fs_type == VirtualFilesystem.TYPE_BLOCK:
|
|
return "dev"
|
|
return "dir"
|
|
|
|
def __init__(self, conn, parsexml=None, parsexmlnode=None):
|
|
VirtualDevice.__init__(self, conn, parsexml, parsexmlnode)
|
|
|
|
self._type = None
|
|
self._mode = None
|
|
self._driver = None
|
|
self._target = None
|
|
self._source = None
|
|
self._readonly = None
|
|
self._wrpolicy = None
|
|
|
|
if self._is_parse():
|
|
return
|
|
|
|
self.mode = self.MODE_DEFAULT
|
|
self.type = self.TYPE_DEFAULT
|
|
self.driver = self.DRIVER_DEFAULT
|
|
self.wrpolicy = self.WRPOLICY_DEFAULT
|
|
|
|
def _get_type(self):
|
|
return self._type
|
|
def _set_type(self, val):
|
|
if val is not None and not self.TYPES.count(val):
|
|
raise ValueError(_("Unsupported filesystem type '%s'" % val))
|
|
self._type = val
|
|
type = XMLProperty(_get_type, _set_type, xpath="./@type")
|
|
|
|
def _get_mode(self):
|
|
return self._mode
|
|
def _set_mode(self, val):
|
|
if val is not None and not self.MOUNT_MODES.count(val):
|
|
raise ValueError(_("Unsupported filesystem mode '%s'" % val))
|
|
self._mode = val
|
|
mode = XMLProperty(_get_mode, _set_mode, xpath="./@accessmode")
|
|
|
|
def _get_wrpolicy(self):
|
|
return self._wrpolicy
|
|
def _set_wrpolicy(self, val):
|
|
if val is not None and not self.WRPOLICIES.count(val):
|
|
raise ValueError(_("Unsupported filesystem write policy '%s'" % val))
|
|
self._wrpolicy = val
|
|
wrpolicy = XMLProperty(_get_wrpolicy, _set_wrpolicy, xpath="./driver/@wrpolicy")
|
|
|
|
def _get_readonly(self):
|
|
return self._readonly
|
|
def _set_readonly(self, val):
|
|
self._readonly = val
|
|
readonly = XMLProperty(_get_readonly, _set_readonly,
|
|
xpath="./readonly", is_bool=True)
|
|
|
|
def _get_driver(self):
|
|
return self._driver
|
|
def _set_driver(self, val):
|
|
if val is not None and not self.DRIVER_TYPES.count(val):
|
|
raise ValueError(_("Unsupported filesystem driver '%s'" % val))
|
|
self._driver = val
|
|
driver = XMLProperty(_get_driver, _set_driver, xpath="./driver/@type")
|
|
|
|
def _get_source(self):
|
|
return self._source
|
|
def _set_source(self, val):
|
|
if self.type != self.TYPE_TEMPLATE:
|
|
val = os.path.abspath(val)
|
|
self._source = val
|
|
def _xml_get_source_xpath(self):
|
|
xpath = None
|
|
ret = "./source/@dir"
|
|
for prop in self._target_props:
|
|
xpath = "./source/@" + prop
|
|
if self._xml_ctx.xpathEval(xpath):
|
|
ret = xpath
|
|
|
|
return ret
|
|
def _xml_set_source_xpath(self):
|
|
ret = "./source/@" + self.type_to_source_prop(self.type)
|
|
return ret
|
|
source = XMLProperty(_get_source, _set_source, name="filesystem source",
|
|
xml_get_xpath=_xml_get_source_xpath,
|
|
xml_set_xpath=_xml_set_source_xpath)
|
|
|
|
def _get_target(self):
|
|
return self._target
|
|
def _set_target(self, val):
|
|
# 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() and
|
|
(self.type == self.TYPE_DEFAULT or
|
|
self.type == self.TYPE_MOUNT)):
|
|
pass
|
|
elif not os.path.isabs(val):
|
|
raise ValueError(_("Filesystem target '%s' must be an absolute "
|
|
"path") % val)
|
|
self._target = val
|
|
target = XMLProperty(_get_target, _set_target, xpath="./target/@dir")
|
|
|
|
|
|
def _get_xml_config(self):
|
|
mode = self.mode
|
|
ftype = self.type
|
|
driver = self.driver
|
|
source = self.source
|
|
target = self.target
|
|
readonly = self.readonly
|
|
wrpolicy = self.wrpolicy
|
|
|
|
if mode == self.MODE_DEFAULT:
|
|
mode = None
|
|
if ftype == self.TYPE_DEFAULT:
|
|
ftype = None
|
|
if driver == self.DRIVER_DEFAULT:
|
|
driver = None
|
|
wrpolicy = None
|
|
if wrpolicy == self.WRPOLICY_DEFAULT:
|
|
wrpolicy = None
|
|
|
|
if not source or not target:
|
|
raise ValueError(
|
|
_("A filesystem source and target must be specified"))
|
|
|
|
fsxml = " <filesystem"
|
|
if ftype:
|
|
fsxml += " type='%s'" % ftype
|
|
if mode:
|
|
fsxml += " accessmode='%s'" % mode
|
|
fsxml += ">\n"
|
|
|
|
if driver:
|
|
if not wrpolicy:
|
|
fsxml += " <driver type='%s'/>\n" % driver
|
|
else:
|
|
fsxml += " <driver type='%s' wrpolicy='%s' />\n" % (
|
|
driver,
|
|
wrpolicy)
|
|
|
|
fsxml += " <source %s='%s'/>\n" % (
|
|
self.type_to_source_prop(ftype),
|
|
source)
|
|
fsxml += " <target dir='%s'/>\n" % target
|
|
|
|
if readonly:
|
|
fsxml += " <readonly/>\n"
|
|
|
|
fsxml += " </filesystem>"
|
|
|
|
return fsxml
|