mirror of
https://github.com/virt-manager/virt-manager.git
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400 lines
12 KiB
Python
400 lines
12 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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# Jeremy Katz <katzj@redhat.com>
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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 logging
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import re
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import time
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import gi
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gi.require_version('Libosinfo', '1.0')
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from gi.repository import Libosinfo as libosinfo
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from gi.repository import GLib
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###################
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# Sorting helpers #
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###################
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def _sort(tosort):
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sortby_mappings = {}
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distro_mappings = {}
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retlist = []
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for key, osinfo in tosort.items():
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# Libosinfo has some duplicate version numbers here, so append .1
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# if there's a collision
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sortby = osinfo.sortby
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while sortby_mappings.get(sortby):
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sortby = sortby + ".1"
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sortby_mappings[sortby] = key
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# Group by distro first, so debian is clumped together, fedora, etc.
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distro = osinfo.distro
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if distro not in distro_mappings:
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distro_mappings[distro] = []
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distro_mappings[distro].append(sortby)
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# We want returned lists to be sorted descending by 'distro', so we get
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# debian5, debian4, fedora14, fedora13
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# rather than
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# debian4, debian5, fedora13, fedora14
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for distro_list in list(distro_mappings.values()):
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distro_list.sort()
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distro_list.reverse()
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sorted_distro_list = list(distro_mappings.keys())
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sorted_distro_list.sort()
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# Build the final list of sorted os objects
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for distro in sorted_distro_list:
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distro_list = distro_mappings[distro]
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for key in distro_list:
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orig_key = sortby_mappings[key]
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retlist.append(tosort[orig_key])
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return retlist
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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.__all_variants = None
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# This is only for back compatibility with pre-libosinfo support.
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# This should never change.
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_aliases = {
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"altlinux": "altlinux1.0",
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"debianetch": "debian4",
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"debianlenny": "debian5",
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"debiansqueeze": "debian6",
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"debianwheezy": "debian7",
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"freebsd10": "freebsd10.0",
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"freebsd6": "freebsd6.0",
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"freebsd7": "freebsd7.0",
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"freebsd8": "freebsd8.0",
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"freebsd9": "freebsd9.0",
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"mandriva2009": "mandriva2009.0",
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"mandriva2010": "mandriva2010.0",
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"mbs1": "mbs1.0",
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"msdos": "msdos6.22",
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"openbsd4": "openbsd4.2",
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"opensolaris": "opensolaris2009.06",
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"opensuse11": "opensuse11.4",
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"opensuse12": "opensuse12.3",
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"rhel4": "rhel4.0",
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"rhel5": "rhel5.0",
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"rhel6": "rhel6.0",
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"rhel7": "rhel7.0",
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"ubuntuhardy": "ubuntu8.04",
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"ubuntuintrepid": "ubuntu8.10",
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"ubuntujaunty": "ubuntu9.04",
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"ubuntukarmic": "ubuntu9.10",
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"ubuntulucid": "ubuntu10.04",
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"ubuntumaverick": "ubuntu10.10",
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"ubuntunatty": "ubuntu11.04",
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"ubuntuoneiric": "ubuntu11.10",
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"ubuntuprecise": "ubuntu12.04",
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"ubuntuquantal": "ubuntu12.10",
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"ubunturaring": "ubuntu13.04",
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"ubuntusaucy": "ubuntu13.10",
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"virtio26": "fedora10",
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"vista": "winvista",
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"winxp64": "winxp",
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# Old --os-type values
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"linux": "generic",
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"windows": "winxp",
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"solaris": "solaris10",
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"unix": "freebsd9.0",
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"other": "generic",
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}
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#################
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# Internal APIs #
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#################
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def _make_default_variants(self):
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ret = {}
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# Generic variant
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v = _OsVariant(None)
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ret[v.name] = v
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return ret
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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 _all_variants(self):
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if not self.__all_variants:
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loader = self._os_loader
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allvariants = self._make_default_variants()
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db = loader.get_db()
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oslist = db.get_os_list()
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for os in range(oslist.get_length()):
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osi = _OsVariant(oslist.get_nth(os))
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allvariants[osi.name] = osi
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self.__all_variants = allvariants
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return self.__all_variants
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###############
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# Public APIs #
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###############
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def lookup_os(self, key):
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key = self._aliases.get(key) or key
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return self._all_variants.get(key)
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def lookup_os_by_media(self, location):
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media = libosinfo.Media.create_from_location(location, None)
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ret = self._os_loader.get_db().guess_os_from_media(media)
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if not (ret and len(ret) > 0 and ret[0]):
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return None
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osname = ret[0].get_short_id()
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if osname == "fedora-unknown":
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osname = self.latest_fedora_version()
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logging.debug("Detected location=%s as os=fedora-unknown. "
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"Converting that to the latest fedora OS version=%s",
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location, osname)
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return osname
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def list_os(self):
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"""
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List all OSes in the DB
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"""
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sortmap = {}
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for name, osobj in self._all_variants.items():
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sortmap[name] = osobj
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return _sort(sortmap)
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def latest_regex(self, regex):
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"""
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Return the latest distro name that matches the passed regex
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"""
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oses = [o.name for o in self.list_os() if re.match(regex, o.name)]
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if not oses:
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return None
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return oses[0]
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def latest_fedora_version(self):
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return self.latest_regex("fedora[0-9]+")
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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._family = self._os and self._os.get_family() or None
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self.name = self._os and self._os.get_short_id() or "generic"
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self.label = self._os and self._os.get_name() or "Generic"
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self.codename = self._os and self._os.get_codename() or ""
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self.distro = self._os and self._os.get_distro() or ""
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self.eol = self._get_eol()
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self.sortby = self._get_sortby()
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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, os=None,
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check_derives=True, check_upgrades=True, check_clones=True):
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os = os or self._os
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if not os:
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return False
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if os.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(os.get_related(
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libosinfo.ProductRelationship.DERIVES_FROM).get_elements())
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if check_clones:
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_extend(os.get_related(
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libosinfo.ProductRelationship.CLONES).get_elements())
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if check_upgrades:
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_extend(os.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, os=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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if not self._os:
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return []
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devlist = self._os.get_all_devices()
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return [devlist.get_nth(i) for i in range(devlist.get_length())]
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def _device_filter(self, name=None, cls=None, bus=None):
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ret = []
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for dev in self._get_all_devices():
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if name and not re.match(name, dev.get_name()):
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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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if bus and not re.match(bus, dev.get_bus_type()):
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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 and self._os.get_eol_date() or None
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rel = self._os and self._os.get_release_date() or None
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# End of life if an EOL date is present and has past,
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# or if the release date is present and was 5 years or more
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if eol is not None:
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now = GLib.Date()
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now.set_time_t(time.time())
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if eol.compare(now) < 0:
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return True
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elif rel is not None:
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then = GLib.Date()
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then.set_time_t(time.time())
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then.subtract_years(5)
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if rel.compare(then) < 0:
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return True
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return False
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def _get_sortby(self):
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if not self._os:
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return "1"
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version = self._os.get_version()
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try:
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t = version.split(".")
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t = t[:min(4, len(t))] + [0] * (4 - min(4, len(t)))
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new_version = ""
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for n in t:
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new_version = new_version + ("%.4i" % int(n))
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version = new_version
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except Exception:
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pass
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return "%s-%s" % (self.distro, version)
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###############
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# Public APIs #
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###############
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def is_windows(self):
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return self._family in ['win9x', 'winnt', 'win16']
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def broken_x2apic(self):
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# x2apic breaks networking in solaris10
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# https://bugs.launchpad.net/bugs/1395217
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return self.name in ('solaris10', 'solaris11')
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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 supports_qemu_ga(self):
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return self._is_related_to(
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["debian8", "fedora18", "rhel6.0", "sles11sp4"])
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def default_netmodel(self):
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"""
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Default non-virtio net-model, since we check for that separately
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"""
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for devname in self._device_filter(cls="net"):
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if devname in ["pcnet", "ne2k_pci", "rtl8139", "e1000"]:
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return devname
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return None
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def supports_usbtablet(self):
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return bool(self._device_filter(cls="input", name="tablet", bus="usb"))
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def supports_virtiodisk(self):
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return bool(self._device_filter(cls="block", name="virtio-block"))
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def supports_virtionet(self):
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return bool(self._device_filter(cls="net", name="virtio-net"))
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def supports_virtiorng(self):
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return bool(self._device_filter(cls="rng", name="virtio-rng"))
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def get_recommended_resources(self, guest):
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ret = {}
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if not self._os:
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return ret
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def read_resource(resources, minimum, arch):
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# If we are reading the "minimum" block, allocate more
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# resources.
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ram_scale = minimum and 2 or 1
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n_cpus_scale = minimum and 2 or 1
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storage_scale = minimum and 2 or 1
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for i in range(resources.get_length()):
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r = resources.get_nth(i)
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if r.get_architecture() == arch:
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ret["ram"] = r.get_ram() * ram_scale
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ret["cpu"] = r.get_cpu()
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ret["n-cpus"] = r.get_n_cpus() * n_cpus_scale
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ret["storage"] = r.get_storage() * storage_scale
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break
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# libosinfo may miss the recommended resources block for some OS,
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# in this case read first the minimum resources (if present)
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# and use them.
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read_resource(self._os.get_minimum_resources(), True, "all")
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read_resource(self._os.get_minimum_resources(), True, guest.os.arch)
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read_resource(self._os.get_recommended_resources(), False, "all")
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read_resource(self._os.get_recommended_resources(),
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False, guest.os.arch)
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# QEMU TCG doesn't gain anything by having extra VCPUs
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if guest.type == "qemu":
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ret["n-cpus"] = 1
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return ret
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OSDB = _OSDB()
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