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https://github.com/virt-manager/virt-manager.git
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32f0781531
When there are multiple usb devices with same vendor/product in the host device list, the bus/addr is going to be used when attaching one of usb devices. Currently is_dup flag is only useful to VirtualHostDeviceUSB. I put get_nodedevs_number() in connection.py, so the startup hooks can use it.
275 lines
9.0 KiB
Python
275 lines
9.0 KiB
Python
#
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# Copyright 2009 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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from virtinst.VirtualDevice import VirtualDevice
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from virtinst import NodeDeviceParser
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import logging
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from virtinst.XMLBuilderDomain import _xml_property
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class VirtualHostDevice(VirtualDevice):
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_virtual_device_type = VirtualDevice.VIRTUAL_DEV_HOSTDEV
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def device_from_node(conn, name=None, nodedev=None, is_dup=False):
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"""
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Convert the passed device name to a VirtualHostDevice
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instance, with proper error reporting. Name can be any of the
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values accepted by NodeDeviceParser.lookupNodeName. If a node
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device name is not specified, a virtinst.NodeDevice instance can
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be passed in to create a dev from.
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@param conn: libvirt.virConnect instance to perform the lookup on
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@param name: optional libvirt node device name to lookup
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@param nodedev: optional L{virtinst.NodeDevice} instance to use
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@rtype: L{virtinst.VirtualHostDevice} instance
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"""
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if not name and not nodedev:
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raise ValueError(_("'name' or 'nodedev' required."))
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if nodedev:
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nodeinst = nodedev
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else:
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nodeinst, addr_type = NodeDeviceParser.lookupNodeName(conn, name)
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if addr_type == NodeDeviceParser.HOSTDEV_ADDR_TYPE_USB_BUSADDR:
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is_dup = True
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if isinstance(nodeinst, NodeDeviceParser.PCIDevice):
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return VirtualHostDevicePCI(conn, nodedev=nodeinst)
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elif isinstance(nodeinst, NodeDeviceParser.USBDevice):
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return VirtualHostDeviceUSB(conn, nodedev=nodeinst, is_dup=is_dup)
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elif isinstance(nodeinst, NodeDeviceParser.NetDevice):
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parentname = nodeinst.parent
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try:
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return VirtualHostDevice.device_from_node(conn,
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name=parentname)
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except:
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logging.exception("Fetching net parent device failed.")
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raise ValueError(_("Node device type '%s' cannot be attached to "
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" guest.") % nodeinst.device_type)
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device_from_node = staticmethod(device_from_node)
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def __init__(self, conn, nodedev=None,
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parsexml=None, parsexmlnode=None, caps=None):
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"""
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@param conn: Connection the device/guest will be installed on
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@type conn: libvirt.virConnect
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@param nodedev: Optional NodeDevice instance for device being
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attached to the guest
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@type nodedev: L{virtinst.NodeDeviceParser.NodeDevice}
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"""
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VirtualDevice.__init__(self, conn, parsexml,
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parsexmlnode, caps)
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self._mode = None
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self._type = None
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self._managed = None
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self._nodedev = nodedev
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self._vendor = None
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self._product = None
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self._bus = None
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self._device = None
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self._domain = "0x0"
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self._slot = None
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self._function = None
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if self._is_parse():
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return
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self.managed = True
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if self.is_xen():
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self.managed = False
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def get_mode(self):
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return self._mode
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def set_mode(self, val):
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self._mode = val
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mode = _xml_property(get_mode, set_mode,
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xpath="./@mode")
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def get_type(self):
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return self._type
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def set_type(self, val):
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self._type = val
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type = _xml_property(get_type, set_type,
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xpath="./@type")
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def get_managed(self):
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return self._managed
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def set_managed(self, val):
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self._managed = bool(val)
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managed = _xml_property(get_managed, set_managed,
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get_converter=lambda s, x: bool(x == "yes"),
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set_converter=lambda s, x: x and "yes" or "no",
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xpath="./@managed")
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def get_vendor(self):
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return self._vendor
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def set_vendor(self, val):
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self._vendor = val
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vendor = _xml_property(get_vendor, set_vendor,
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xpath="./source/vendor/@id")
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def get_product(self):
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return self._product
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def set_product(self, val):
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self._product = val
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product = _xml_property(get_product, set_product,
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xpath="./source/product/@id")
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def get_device(self):
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return self._device
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def set_device(self, val):
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self._device = val
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device = _xml_property(get_device, set_device,
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xpath="./source/address/@device")
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def get_bus(self):
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return self._bus
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def set_bus(self, val):
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self._bus = val
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bus = _xml_property(get_bus, set_bus,
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xpath="./source/address/@bus")
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def get_function(self):
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return self._function
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def set_function(self, val):
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self._function = val
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function = _xml_property(get_function, set_function,
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xpath="./source/address/@function")
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def get_domain(self):
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return self._domain
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def set_domain(self, val):
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self._domain = val
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domain = _xml_property(get_domain, set_domain,
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xpath="./source/address/@domain")
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def get_slot(self):
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return self._slot
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def set_slot(self, val):
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self._slot = val
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slot = _xml_property(get_slot, set_slot,
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xpath="./source/address/@slot")
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def _get_source_xml(self):
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raise NotImplementedError("Must be implemented in subclass")
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def setup(self, conn=None):
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"""
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Unused
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@param conn: libvirt virConnect instance to use (defaults to devices
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connection)
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"""
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ignore = conn
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def _get_xml_config(self):
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xml = (" <hostdev mode='%s' type='%s' managed='%s'>\n" %
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(self.mode, self.type, self.managed and "yes" or "no"))
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xml += " <source>\n"
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xml += self._get_source_xml()
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xml += " </source>\n"
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xml += " </hostdev>"
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return xml
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class VirtualHostDeviceUSB(VirtualHostDevice):
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def __init__(self, conn, nodedev=None, is_dup=False):
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VirtualHostDevice.__init__(self, conn, nodedev)
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self.mode = "subsystem"
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self.type = "usb"
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self.is_dup = is_dup
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self._set_from_nodedev(self._nodedev)
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def _set_from_nodedev(self, nodedev):
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if not nodedev:
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return
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if not isinstance(nodedev, NodeDeviceParser.USBDevice):
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raise ValueError(_("'nodedev' must be a USBDevice instance."))
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self.vendor = nodedev.vendor_id
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self.product = nodedev.product_id
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if self.is_dup:
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self.bus = nodedev.bus
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self.device = nodedev.device
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def _get_source_xml(self):
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xml = ""
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found = False
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if self.vendor and self.product:
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xml += " <vendor id='%s'/>\n" % self.vendor
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xml += " <product id='%s'/>\n" % self.product
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found = True
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if self.bus and self.device:
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xml += " <address bus='%s' device='%s'/>\n" % (self.bus,
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self.device)
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found = True
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if not found:
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raise RuntimeError(_("'vendor' and 'product', or 'bus' and "
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" 'device' are required."))
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return xml
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class VirtualHostDevicePCI(VirtualHostDevice):
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def __init__(self, conn, nodedev=None):
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VirtualHostDevice.__init__(self, conn, nodedev)
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self.mode = "subsystem"
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self.type = "pci"
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self._set_from_nodedev(self._nodedev)
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def _set_from_nodedev(self, nodedev):
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if not nodedev:
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return
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if not isinstance(nodedev, NodeDeviceParser.PCIDevice):
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raise ValueError(_("'nodedev' must be a PCIDevice instance."))
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self.domain = nodedev.domain
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self.bus = nodedev.bus
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self.slot = nodedev.slot
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self.function = nodedev.function
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def _get_source_xml(self):
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if not (self.domain and self.bus and self.slot and self.function):
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raise RuntimeError(_("'domain', 'bus', 'slot', and 'function' "
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"must be specified."))
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xml = " <address domain='%s' bus='%s' slot='%s' function='%s'/>\n"
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return xml % (self.domain, self.bus, self.slot, self.function)
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