mirror of
https://github.com/virt-manager/virt-manager.git
synced 2024-12-22 13:34:07 +03:00
5c49151df9
And drop the futureproofing workaround now that it's no longer required Signed-off-by: Cole Robinson <crobinso@redhat.com>
632 lines
21 KiB
Python
632 lines
21 KiB
Python
#
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# List of OS Specific data
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#
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# Copyright 2006-2008, 2013-2014 Red Hat, Inc.
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#
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# This work is licensed under the GNU GPLv2 or later.
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# See the COPYING file in the top-level directory.
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import datetime
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import os
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import re
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from gi.repository import Libosinfo
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from . import xmlutil
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from .logger import log
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def _media_create_from_location(location):
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if not hasattr(Libosinfo.Media, "create_from_location_with_flags"):
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return Libosinfo.Media.create_from_location( # pragma: no cover
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location, None)
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# We prefer this API, because by default it will not
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# reject non-bootable media, like debian s390x
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# pylint: disable=no-member
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return Libosinfo.Media.create_from_location_with_flags(location, None, 0)
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class _OsinfoIter:
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"""
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Helper to turn osinfo style get_length/get_nth lists into python
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iterables
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"""
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def __init__(self, listobj):
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self.current = 0
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self.listobj = listobj
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self.high = -1
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if self.listobj:
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self.high = self.listobj.get_length() - 1
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def __iter__(self):
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return self
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def __next__(self):
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if self.current > self.high:
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raise StopIteration
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ret = self.listobj.get_nth(self.current)
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self.current += 1
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return ret
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class _OSDB(object):
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"""
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Entry point for the public API
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"""
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def __init__(self):
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self.__os_loader = None
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self.__os_generic = None
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#################
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# Internal APIs #
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#################
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@property
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def _os_generic(self):
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if not self.__os_generic:
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# Add our custom generic variant
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o = Libosinfo.Os()
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o.set_param("short-id", "generic")
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o.set_param("name",
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_("Generic or unknown OS. Usage is not recommended."))
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self.__os_generic = _OsVariant(o)
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return self.__os_generic
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@property
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def _os_loader(self):
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if not self.__os_loader:
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loader = Libosinfo.Loader()
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loader.process_default_path()
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self.__os_loader = loader
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return self.__os_loader
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@property
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def _os_db(self):
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return self._os_loader.get_db()
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###############
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# Public APIs #
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###############
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def lookup_os_by_full_id(self, full_id, raise_error=False):
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osobj = self._os_db.get_os(full_id)
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if osobj is None:
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if raise_error:
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raise ValueError(_("Unknown libosinfo ID '%s'") % full_id)
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return None
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return _OsVariant(osobj)
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def lookup_os(self, key, raise_error=False):
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if key == self._os_generic.name:
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return self._os_generic
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flt = Libosinfo.Filter()
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flt.add_constraint(Libosinfo.PRODUCT_PROP_SHORT_ID,
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key)
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oslist = self._os_db.get_os_list().new_filtered(flt).get_elements()
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if len(oslist) == 0:
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if raise_error:
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raise ValueError(_("Unknown OS name '%s'. "
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"See `--osinfo list` for valid values.") % key)
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return None
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return _OsVariant(oslist[0])
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def guess_os_by_iso(self, location):
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try:
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media = _media_create_from_location(location)
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except Exception as e:
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log.debug("Error creating libosinfo media object: %s", str(e))
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return None
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if not self._os_db.identify_media(media):
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return None
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return media.get_os().get_short_id(), _OsMedia(media)
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def guess_os_by_tree(self, location):
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if location.startswith("/"):
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location = "file://" + location
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if xmlutil.in_testsuite() and not location.startswith("file:"):
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# We have mock network tests, but we don't want to pass the
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# fake URL to libosinfo because it slows down the testcase
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return None
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try:
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tree = Libosinfo.Tree.create_from_location(location, None)
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except Exception as e:
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log.debug("Error creating libosinfo tree object for "
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"location=%s : %s", location, str(e))
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return None
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if hasattr(self._os_db, "identify_tree"):
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# osinfo_db_identify_tree is part of libosinfo 1.6.0
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if not self._os_db.identify_tree(tree):
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return None # pragma: no cover
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return tree.get_os().get_short_id(), _OsTree(tree)
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else: # pragma: no cover
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osobj, treeobj = self._os_db.guess_os_from_tree(tree)
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if not osobj:
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return None # pragma: no cover
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return osobj.get_short_id(), _OsTree(treeobj)
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def list_os(self, sortkey="name"):
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"""
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List all OSes in the DB, sorting by the passes _OsVariant attribute
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"""
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oslist = [_OsVariant(osent) for osent in
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self._os_db.get_os_list().get_elements()]
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oslist.append(self._os_generic)
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# human/natural sort, but with reverse sorted numbers
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def to_int(text):
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return (int(text) * -1) if text.isdigit() else text.lower()
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def alphanum_key(obj):
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val = getattr(obj, sortkey)
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return [to_int(c) for c in re.split('([0-9]+)', val)]
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return list(sorted(oslist, key=alphanum_key))
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OSDB = _OSDB()
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#####################
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# OsResources class #
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#####################
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class _OsResources:
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def __init__(self, minimum, recommended):
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self._minimum = self._convert_to_dict(minimum)
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self._recommended = self._convert_to_dict(recommended)
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def _convert_to_dict(self, resources):
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"""
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Convert an OsResources object to a dictionary for easier
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lookups. Layout is: {arch: {strkey: value}}
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"""
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ret = {}
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for r in _OsinfoIter(resources):
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vals = {}
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vals["ram"] = r.get_ram()
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vals["n-cpus"] = r.get_n_cpus()
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vals["storage"] = r.get_storage()
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ret[r.get_architecture()] = vals
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return ret
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def _get_key(self, resources, key, arch):
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for checkarch in [arch, "all"]:
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val = resources.get(checkarch, {}).get(key, -1)
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if val != -1:
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return val
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def _get_minimum_key(self, key, arch):
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val = self._get_key(self._minimum, key, arch)
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if val and val > 0:
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return val
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def _get_recommended_key(self, key, arch):
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val = self._get_key(self._recommended, key, arch)
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if val and val > 0:
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return val
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# If we are looking for a recommended value, but the OS
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# DB only has minimum resources tracked, double the minimum
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# value as an approximation at a 'recommended' value
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val = self._get_minimum_key(key, arch)
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if val:
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log.debug("No recommended value found for key='%s', "
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"using minimum=%s * 2", key, val)
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return val * 2
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return None
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def get_minimum_ram(self, arch):
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return self._get_minimum_key("ram", arch)
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def get_recommended_ram(self, arch):
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return self._get_recommended_key("ram", arch)
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def get_recommended_ncpus(self, arch):
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return self._get_recommended_key("n-cpus", arch)
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def get_recommended_storage(self, arch):
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return self._get_recommended_key("storage", arch)
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#####################
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# OsVariant classes #
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#####################
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class _OsVariant(object):
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def __init__(self, o):
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self._os = o
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self._short_ids = [self._os.get_short_id()]
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if hasattr(self._os, "get_short_id_list"):
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self._short_ids = self._os.get_short_id_list()
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self.name = self._short_ids[0]
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self.all_names = list(sorted(set(self._short_ids)))
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self._family = self._os.get_family()
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self.full_id = self._os.get_id()
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self.label = self._os.get_name()
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self.codename = self._os.get_codename() or ""
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self.distro = self._os.get_distro() or ""
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self.version = self._os.get_version()
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self.eol = self._get_eol()
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def __repr__(self):
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return "<%s name=%s>" % (self.__class__.__name__, self.name)
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########################
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# Internal helper APIs #
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########################
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def _is_related_to(self, related_os_list, osobj=None,
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check_derives=True, check_upgrades=True, check_clones=True):
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osobj = osobj or self._os
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if osobj.get_short_id() in related_os_list:
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return True
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check_list = []
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def _extend(newl):
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for obj in newl:
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if obj not in check_list:
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check_list.append(obj)
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if check_derives:
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_extend(osobj.get_related(
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Libosinfo.ProductRelationship.DERIVES_FROM).get_elements())
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if check_clones:
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_extend(osobj.get_related(
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Libosinfo.ProductRelationship.CLONES).get_elements())
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if check_upgrades:
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_extend(osobj.get_related(
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Libosinfo.ProductRelationship.UPGRADES).get_elements())
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for checkobj in check_list:
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if (checkobj.get_short_id() in related_os_list or
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self._is_related_to(related_os_list, osobj=checkobj,
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check_upgrades=check_upgrades,
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check_derives=check_derives,
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check_clones=check_clones)):
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return True
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return False
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def _get_all_devices(self):
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return list(_OsinfoIter(self._os.get_all_devices()))
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def _device_filter(self, devids=None, cls=None, extra_devs=None):
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ret = []
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devids = devids or []
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for dev in self._get_all_devices():
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if devids and dev.get_id() not in devids:
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continue
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if cls and not re.match(cls, dev.get_class()):
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continue
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ret.append(dev.get_name())
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extra_devs = extra_devs or []
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for dev in extra_devs:
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if dev.get_id() not in devids:
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continue
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ret.append(dev.get_name())
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return ret
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###############
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# Cached APIs #
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###############
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def _get_eol(self):
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eol = self._os.get_eol_date()
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rel = self._os.get_release_date()
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# We can use os.get_release_status() & osinfo.ReleaseStatus.ROLLING
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# if we require libosinfo >= 1.4.0.
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release_status = self._os.get_param_value(
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Libosinfo.OS_PROP_RELEASE_STATUS) or None
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def _glib_to_datetime(glibdate):
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date = "%s-%s" % (glibdate.get_year(), glibdate.get_day_of_year())
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return datetime.datetime.strptime(date, "%Y-%j")
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now = datetime.datetime.today()
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if eol is not None:
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return now > _glib_to_datetime(eol)
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# Rolling distributions are never EOL.
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if release_status == "rolling":
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return False
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# If no EOL is present, assume EOL if release was > 10 years ago
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if rel is not None:
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rel5 = _glib_to_datetime(rel) + datetime.timedelta(days=365 * 10)
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return now > rel5
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return False
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###############
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# Public APIs #
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###############
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def get_handle(self):
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return self._os
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def is_generic(self):
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return self.name == "generic"
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def is_linux_generic(self):
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return re.match(r"linux\d\d\d\d", self.name)
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def is_windows(self):
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return self._family in ['win9x', 'winnt', 'win16']
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def get_clock(self):
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if self.is_windows() or self._family in ['solaris']:
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return "localtime"
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return "utc"
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def supported_netmodels(self):
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return self._device_filter(cls="net")
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def supports_virtiodisk(self, extra_devs=None):
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# virtio-block and virtio1.0-block
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devids = ["http://pcisig.com/pci/1af4/1001",
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"http://pcisig.com/pci/1af4/1042"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtioscsi(self, extra_devs=None):
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# virtio-scsi and virtio1.0-scsi
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devids = ["http://pcisig.com/pci/1af4/1004",
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"http://pcisig.com/pci/1af4/1048"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtionet(self, extra_devs=None):
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# virtio-net and virtio1.0-net
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devids = ["http://pcisig.com/pci/1af4/1000",
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"http://pcisig.com/pci/1af4/1041"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtiorng(self, extra_devs=None):
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# virtio-rng and virtio1.0-rng
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devids = ["http://pcisig.com/pci/1af4/1005",
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"http://pcisig.com/pci/1af4/1044"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtiogpu(self, extra_devs=None):
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# virtio1.0-gpu and virtio1.0
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devids = ["http://pcisig.com/pci/1af4/1050"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtioballoon(self, extra_devs=None):
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# virtio-balloon and virtio1.0-balloon
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devids = ["http://pcisig.com/pci/1af4/1002",
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"http://pcisig.com/pci/1af4/1045"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtioserial(self, extra_devs=None):
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devids = ["http://pcisig.com/pci/1af4/1003",
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"http://pcisig.com/pci/1af4/1043"]
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if self._device_filter(devids=devids, extra_devs=extra_devs):
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return True
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# osinfo data was wrong for RHEL/centos here until Oct 2018
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# Remove this hack after 6 months or so
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return self._is_related_to("rhel6.0")
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def supports_virtioinput(self, extra_devs=None):
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# virtio1.0-input
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devids = ["http://pcisig.com/pci/1af4/1052"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_usb3(self, extra_devs=None):
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# qemu-xhci
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devids = ["http://pcisig.com/pci/1b36/0004"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_virtio1(self, extra_devs=None):
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# Use virtio1.0-net device as a proxy for virtio1.0 as a whole
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devids = ["http://pcisig.com/pci/1af4/1041"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def supports_chipset_q35(self, extra_devs=None):
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# For our purposes, check for the union of q35 + virtio1.0 support
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if (self.supports_virtionet(extra_devs=extra_devs) and
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not self.supports_virtio1(extra_devs=extra_devs)):
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return False
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devids = ["http://qemu.org/chipset/x86/q35"]
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return bool(self._device_filter(devids=devids, extra_devs=extra_devs))
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def _get_firmware_list(self):
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if hasattr(self._os, "get_complete_firmware_list"): # pragma: no cover
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return self._os.get_complete_firmware_list().get_elements()
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return [] # pragma: no cover
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def _supports_firmware_type(self, name, arch, default):
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firmwares = self._get_firmware_list()
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for firmware in firmwares: # pragma: no cover
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if firmware.get_architecture() != arch:
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continue
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if firmware.get_firmware_type() == name:
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return firmware.is_supported()
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return default
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def requires_firmware_efi(self, arch):
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ret = False
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try:
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supports_efi = self._supports_firmware_type("efi", arch, False)
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supports_bios = self._supports_firmware_type("bios", arch, True)
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ret = supports_efi and not supports_bios
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except Exception: # pragma: no cover
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log.debug("Error checking osinfo firmware support", exc_info=True)
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return ret
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def get_recommended_resources(self):
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minimum = self._os.get_minimum_resources()
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recommended = self._os.get_recommended_resources()
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return _OsResources(minimum, recommended)
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def get_network_install_required_ram(self, guest):
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if hasattr(self._os, "get_network_install_resources"):
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resources = self._os.get_network_install_resources()
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for r in _OsinfoIter(resources):
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arch = r.get_architecture()
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if arch == guest.os.arch or arch == "all":
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return r.get_ram()
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def get_kernel_url_arg(self):
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"""
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Kernel argument name the distro's installer uses to reference
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a network source, possibly bypassing some installer prompts
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"""
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# Let's ask the OS for its kernel argument for the source
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if hasattr(self._os, "get_kernel_url_argument"):
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osarg = self._os.get_kernel_url_argument()
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if osarg is not None:
|
|
return osarg
|
|
|
|
# SUSE distros
|
|
if self.distro in ["caasp", "sle", "sled", "sles", "opensuse"]:
|
|
return "install"
|
|
|
|
if self.distro not in ["centos", "rhel", "fedora"]:
|
|
return None
|
|
|
|
# Default for RH distros, in case libosinfo data isn't complete
|
|
return "inst.repo" # pragma: no cover
|
|
|
|
def _get_generic_location(self, treelist, arch, profile):
|
|
if not hasattr(Libosinfo.Tree, "get_os_variants"): # pragma: no cover
|
|
for tree in treelist:
|
|
if tree.get_architecture() == arch:
|
|
return tree.get_url()
|
|
return None
|
|
|
|
fallback_tree = None
|
|
if profile == "jeos":
|
|
profile = "Server"
|
|
elif profile == "desktop":
|
|
profile = "Workstation"
|
|
elif not profile:
|
|
profile = "Everything"
|
|
|
|
for tree in treelist:
|
|
if tree.get_architecture() != arch:
|
|
continue
|
|
|
|
variant_list = tree.get_os_variants()
|
|
fallback_tree = tree
|
|
for variant in _OsinfoIter(variant_list):
|
|
if profile in variant.get_name():
|
|
return tree.get_url()
|
|
|
|
if fallback_tree:
|
|
return fallback_tree.get_url()
|
|
return None
|
|
|
|
def get_location(self, arch, profile=None):
|
|
treelist = list(_OsinfoIter(self._os.get_tree_list()))
|
|
|
|
if not treelist:
|
|
raise RuntimeError(
|
|
_("OS '%s' does not have a URL location") % self.name)
|
|
|
|
# Some distros have more than one URL for a specific architecture,
|
|
# which is the case for Fedora and different variants (Server,
|
|
# Workstation). Later on, we'll have to differentiate that and return
|
|
# the right one. However, for now, let's just rely on returning the
|
|
# most generic tree possible.
|
|
location = self._get_generic_location(treelist, arch, profile)
|
|
if location:
|
|
return location
|
|
|
|
raise RuntimeError(
|
|
_("OS '%(osname)s' does not have a URL location "
|
|
"for the architecture '%(archname)s'") %
|
|
{"osname": self.name, "archname": arch})
|
|
|
|
def get_install_script_list(self):
|
|
return list(_OsinfoIter(self._os.get_install_script_list()))
|
|
|
|
def _get_installable_drivers(self, arch):
|
|
installable_drivers = []
|
|
device_drivers = list(_OsinfoIter(self._os.get_device_drivers()))
|
|
for device_driver in device_drivers:
|
|
if arch != "all" and device_driver.get_architecture() != arch:
|
|
continue
|
|
|
|
installable_drivers.append(device_driver)
|
|
return installable_drivers
|
|
|
|
def _get_pre_installable_drivers(self, arch):
|
|
installable_drivers = self._get_installable_drivers(arch)
|
|
pre_inst_drivers = []
|
|
for driver in installable_drivers:
|
|
if driver.get_pre_installable():
|
|
pre_inst_drivers.append(driver)
|
|
return pre_inst_drivers
|
|
|
|
def _get_drivers_location(self, drivers):
|
|
locations = []
|
|
for driver in drivers:
|
|
filenames = driver.get_files()
|
|
for filename in filenames:
|
|
location = os.path.join(driver.get_location(), filename)
|
|
locations.append(location)
|
|
return locations
|
|
|
|
def get_pre_installable_drivers_location(self, arch):
|
|
pre_inst_drivers = self._get_pre_installable_drivers(arch)
|
|
|
|
return self._get_drivers_location(pre_inst_drivers)
|
|
|
|
def get_pre_installable_devices(self, arch):
|
|
drivers = self._get_pre_installable_drivers(arch)
|
|
devices = []
|
|
for driver in drivers:
|
|
devices += list(_OsinfoIter(driver.get_devices()))
|
|
return devices
|
|
|
|
def supports_unattended_drivers(self, arch):
|
|
if self._get_pre_installable_drivers(arch):
|
|
return True
|
|
return False
|
|
|
|
|
|
class _OsMedia(object):
|
|
def __init__(self, osinfo_media):
|
|
self._media = osinfo_media
|
|
|
|
def get_kernel_path(self):
|
|
return self._media.get_kernel_path()
|
|
def get_initrd_path(self):
|
|
return self._media.get_initrd_path()
|
|
def supports_installer_script(self):
|
|
return self._media.supports_installer_script()
|
|
|
|
def is_netinst(self):
|
|
variants = list(_OsinfoIter(self._media.get_os_variants()))
|
|
for variant in variants:
|
|
if "netinst" in variant.get_id():
|
|
return True
|
|
return False # pragma: no cover
|
|
|
|
def get_install_script_list(self):
|
|
return list(_OsinfoIter(self._media.get_install_script_list()))
|
|
|
|
def get_osinfo_media(self):
|
|
return self._media
|
|
|
|
|
|
class _OsTree(object):
|
|
def __init__(self, osinfo_tree):
|
|
self._tree = osinfo_tree
|
|
|
|
def get_osinfo_tree(self):
|
|
return self._tree
|