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2d54949719
I'd like to drop that functionality from xmlbuilder, and just open code it at the callers... this is most of the way there
114 lines
4.0 KiB
Python
114 lines
4.0 KiB
Python
#
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# Copyright 2011, 2013 Red Hat, Inc.
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# Cole Robinson <crobinso@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (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,
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# MA 02110-1301 USA.
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import os
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from .device import VirtualDevice
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from .xmlbuilder import XMLProperty
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class VirtualFilesystem(VirtualDevice):
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virtual_device_type = VirtualDevice.VIRTUAL_DEV_FILESYSTEM
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TYPE_MOUNT = "mount"
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TYPE_TEMPLATE = "template"
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TYPE_FILE = "file"
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TYPE_BLOCK = "block"
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TYPE_RAM = "ram"
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TYPE_DEFAULT = "default"
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TYPES = [TYPE_MOUNT, TYPE_TEMPLATE, TYPE_FILE, TYPE_BLOCK, TYPE_RAM, TYPE_DEFAULT]
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MODE_PASSTHROUGH = "passthrough"
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MODE_MAPPED = "mapped"
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MODE_SQUASH = "squash"
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MODE_DEFAULT = "default"
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MODES = [MODE_PASSTHROUGH, MODE_MAPPED, MODE_SQUASH, MODE_DEFAULT]
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WRPOLICY_IMM = "immediate"
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WRPOLICY_DEFAULT = "default"
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WRPOLICIES = [WRPOLICY_IMM, WRPOLICY_DEFAULT]
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DRIVER_PATH = "path"
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DRIVER_HANDLE = "handle"
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DRIVER_LOOP = "loop"
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DRIVER_NBD = "nbd"
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DRIVER_DEFAULT = "default"
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DRIVERS = [DRIVER_PATH, DRIVER_HANDLE, DRIVER_LOOP, DRIVER_NBD, DRIVER_DEFAULT]
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type = XMLProperty("./@type",
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default_cb=lambda s: None,
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default_name=TYPE_DEFAULT)
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mode = XMLProperty("./@accessmode",
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default_cb=lambda s: None,
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default_name=MODE_DEFAULT)
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wrpolicy = XMLProperty("./driver/@wrpolicy",
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default_cb=lambda s: None,
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default_name=WRPOLICY_DEFAULT)
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driver = XMLProperty("./driver/@type",
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default_cb=lambda s: None,
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default_name=DRIVER_DEFAULT)
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format = XMLProperty("./driver/@format")
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readonly = XMLProperty("./readonly", is_bool=True)
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units = XMLProperty("./source/@units")
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def _validate_set_target(self, val):
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# In case of qemu for default fs type (mount) target is not
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# actually a directory, it is merely a arbitrary string tag
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# that is exported to the guest as a hint for where to mount
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if (self.conn.is_qemu() and
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(self.type is None or
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self.type == self.TYPE_DEFAULT or
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self.type == self.TYPE_MOUNT)):
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pass
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elif not os.path.isabs(val):
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raise ValueError(_("Filesystem target '%s' must be an absolute "
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"path") % val)
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return val
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target = XMLProperty("./target/@dir",
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set_converter=_validate_set_target)
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_source_dir = XMLProperty("./source/@dir")
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_source_name = XMLProperty("./source/@name")
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_source_file = XMLProperty("./source/@file")
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_source_dev = XMLProperty("./source/@dev")
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_source_usage = XMLProperty("./source/@usage")
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def _type_to_source_prop(self):
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if self.type == VirtualFilesystem.TYPE_TEMPLATE:
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return "_source_name"
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elif self.type == VirtualFilesystem.TYPE_FILE:
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return "_source_file"
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elif self.type == VirtualFilesystem.TYPE_BLOCK:
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return "_source_dev"
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elif self.type == VirtualFilesystem.TYPE_RAM:
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return "_source_usage"
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else:
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return "_source_dir"
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def _get_source(self):
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return getattr(self, self._type_to_source_prop())
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def _set_source(self, val):
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return setattr(self, self._type_to_source_prop(), val)
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source = property(_get_source, _set_source)
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VirtualFilesystem.register_type()
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