574 lines
19 KiB
Python
574 lines
19 KiB
Python
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#
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# platform.py: Architecture-specific information
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#
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# Copyright (C) 2009
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# Red Hat, Inc. All rights reserved.
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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, see <http://www.gnu.org/licenses/>.
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#
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# Authors: Chris Lumens <clumens@redhat.com>
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#
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import iutil
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import parted
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import storage
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from storage.errors import *
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from storage.formats import *
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from storage.partspec import *
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import gettext
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_ = lambda x: gettext.ldgettext("anaconda", x)
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N_ = lambda x: x
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class Platform(object):
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"""Platform
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A class containing platform-specific information and methods for use
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during installation. The intent is to eventually encapsulate all the
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architecture quirks in one place to avoid lots of platform checks
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throughout anaconda."""
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_bootFSTypes = ["ext3"]
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_diskLabelType = "msdos"
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_isEfi = iutil.isEfi()
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_minimumSector = 0
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_packages = []
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_supportsMdRaidBoot = False
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_minBootPartSize = 50
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_maxBootPartSize = 0
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def __init__(self, anaconda):
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"""Creates a new Platform object. This is basically an abstract class.
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You should instead use one of the platform-specific classes as
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returned by getPlatform below. Not all subclasses need to provide
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all the methods in this class."""
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self.anaconda = anaconda
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def _mntDict(self):
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"""Return a dictionary mapping mount points to devices."""
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ret = {}
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for device in [d for d in self.anaconda.storage.devices if d.format.mountable]:
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ret[device.format.mountpoint] = device
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return ret
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def bootDevice(self):
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"""Return the device where /boot is mounted."""
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if self.__class__ is Platform:
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raise NotImplementedError("bootDevice not implemented for this platform")
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mntDict = self._mntDict()
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return mntDict.get("/boot", mntDict.get("/"))
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@property
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def defaultBootFSType(self):
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"""Return the default filesystem type for the boot partition."""
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return self._bootFSTypes[0]
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@property
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def bootFSTypes(self):
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"""Return a list of all valid filesystem types for the boot partition."""
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return self._bootFSTypes
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def bootloaderChoices(self, bl):
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"""Return the default list of places to install the bootloader.
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This is returned as a dictionary of locations to (device, identifier)
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tuples. If there is no boot device, an empty dictionary is
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returned."""
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if self.__class__ is Platform:
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raise NotImplementedError("bootloaderChoices not implemented for this platform")
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bootDev = self.bootDevice()
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ret = {}
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if not bootDev:
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return ret
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if bootDev.type == "mdarray":
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ret["boot"] = (bootDev.name, N_("RAID Device"))
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ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))
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else:
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ret["boot"] = (bootDev.name, N_("First sector of boot partition"))
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ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))
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return ret
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def checkBootRequest(self, req):
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"""Perform an architecture-specific check on the boot device. Not all
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platforms may need to do any checks. Returns a list of errors if
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there is a problem, or [] otherwise."""
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errors = []
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if not req:
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return [_("You have not created a bootable partition.")]
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# most arches can't have boot on RAID
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if req.type == "mdarray":
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if not self.supportsMdRaidBoot:
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errors.append(_("Bootable partitions cannot be on a RAID device."))
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elif req.type == "mdarray" and req.level != 1:
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errors.append(_("Bootable partitions can only be on RAID1 devices."))
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else:
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for p in req.parents:
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if p.type != "partition":
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errors.append(_("Bootable RAID1 set members must be partitions."))
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break
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# can't have bootable partition on LV
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if req.type == "lvmlv":
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errors.append(_("Bootable partitions cannot be on a logical volume."))
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# Make sure /boot is on a supported FS type. This prevents crazy
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# things like boot on vfat.
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if not req.format.bootable or \
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(getattr(req.format, "mountpoint", None) == "/boot" and
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req.format.type not in self.bootFSTypes):
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errors.append(_("Bootable partitions cannot be on an %s filesystem.") % req.format.type)
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if req.type == "luks/dm-crypt":
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# Handle encrypted boot on a partition.
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errors.append(_("Bootable partitions cannot be on an encrypted block device"))
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else:
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# Handle encrypted boot on more complicated devices.
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for dev in filter(lambda d: d.type == "luks/dm-crypt", self.anaconda.storage.devices):
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if req in self.anaconda.storage.deviceDeps(dev):
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errors.append(_("Bootable partitions cannot be on an encrypted block device"))
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return errors
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def diskLabelType(self, deviceType):
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"""Return the disk label type as a string."""
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return self._diskLabelType
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@property
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def isEfi(self):
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return self._isEfi
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@property
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def minimumSector(self, disk):
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"""Return the minimum starting sector for the provided disk."""
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return self._minimumSector
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@property
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def packages (self):
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return self._packages
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def setDefaultPartitioning(self):
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"""Return the default platform-specific partitioning information."""
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return [PartSpec(mountpoint="/boot", fstype=self.defaultBootFSType, size=500,
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weight=self.weight(mountpoint="/boot"))]
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@property
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def supportsMdRaidBoot(self):
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"""Does the platform support /boot on MD RAID?"""
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return self._supportsMdRaidBoot
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@property
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def minBootPartSize(self):
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return self._minBootPartSize
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@property
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def maxBootPartSize(self):
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return self._maxBootPartSize
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def validBootPartSize(self, size):
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""" Is the given size (in MB) acceptable for a boot device? """
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if not isinstance(size, int) and not isinstance(size, float):
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return False
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return ((not self.minBootPartSize or size >= self.minBootPartSize)
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and
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(not self.maxBootPartSize or size <= self.maxBootPartSize))
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def weight(self, fstype=None, mountpoint=None):
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""" Given an fstype (as a string) or a mountpoint, return an integer
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for the base sorting weight. This is used to modify the sort
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algorithm for partition requests, mainly to make sure bootable
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partitions and /boot are placed where they need to be."""
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return 0
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class EFI(Platform):
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_bootFSTypes = ["ext4", "ext3", "ext2"]
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_diskLabelType = "gpt"
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_minBootPartSize = 50
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_maxBootPartSize = 256
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def bootDevice(self):
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mntDict = self._mntDict()
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return mntDict.get("/boot/efi")
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def bootloaderChoices(self, bl):
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bootDev = self.bootDevice()
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ret = {}
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if not bootDev:
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return ret
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ret["boot"] = (bootDev.name, N_("EFI System Partition"))
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return ret
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def checkBootRequest(self, req):
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""" Perform architecture-specific checks on the boot device.
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Returns a list of error strings.
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NOTE: X86 does not have a separate checkBootRequest method,
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so this one must work for x86 as well as EFI.
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"""
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if not req:
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return [_("You have not created a /boot/efi partition.")]
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errors = Platform.checkBootRequest(self, req)
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if req.format.mountpoint == "/boot/efi":
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if req.format.type != "efi":
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errors.append(_("/boot/efi is not EFI."))
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# Don't try to check the disklabel on lv's etc, using lv for /boot
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# is already checked in the generic Platform.checkBootRequest()
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partitions = []
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if req.type == "partition":
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partitions = [ req ]
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elif req.type == "mdarray":
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partitions = filter(lambda d: d.type == "partition", req.parents)
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# Check that we've got a correct disk label.
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for p in partitions:
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partedDisk = p.disk.format.partedDisk
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labelType = self.diskLabelType(partedDisk.device.type)
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# Allow using gpt with x86, but not msdos with EFI
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if partedDisk.type != labelType and partedDisk.type != "gpt":
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errors.append(_("%s must have a %s disk label.")
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% (p.disk.name, labelType.upper()))
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return errors
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def setDefaultPartitioning(self):
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ret = Platform.setDefaultPartitioning(self)
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# Only add the EFI partition to the default set if there's not already
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# one on the system.
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if len(filter(lambda dev: dev.format.type == "efi" and self.validBootPartSize(dev.size),
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self.anaconda.storage.partitions)) == 0:
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ret.append(PartSpec(mountpoint="/boot/efi", fstype="efi", size=20,
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maxSize=200, grow=True, weight=self.weight(fstype="efi")))
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return ret
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def weight(self, fstype=None, mountpoint=None):
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if fstype and fstype == "efi" or mountpoint and mountpoint == "/boot/efi":
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return 5000
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elif mountpoint and mountpoint == "/boot":
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return 2000
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else:
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return 0
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class Alpha(Platform):
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_diskLabelType = "bsd"
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def checkBootRequest(self, req):
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errors = Platform.checkBootRequest(self, req)
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if not req or req.type != "partition" or not req.disk:
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return errors
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disk = req.disk.format.partedDisk
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# Check that we're a BSD disk label
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if not disk.type == self._diskLabelType.name:
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errors.append(_("%s must have a bsd disk label.") % req.disk.name)
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# The first free space should start at the beginning of the drive and
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# span for a megabyte or more.
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free = disk.getFirstPartition()
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while free:
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if free.type & parted.PARTITION_FREESPACE:
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break
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free = free.nextPartition()
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if not free or free.geoemtry.start != 1L or free.getSize(unit="MB") < 1:
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errors.append(_("The disk %s requires at least 1MB of free space at the beginning.") % req.disk.name)
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return errors
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class IA64(EFI):
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_packages = ["elilo"]
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def __init__(self, anaconda):
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EFI.__init__(self, anaconda)
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class PPC(Platform):
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_bootFSTypes = ["ext4", "ext3", "ext2"]
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_packages = ["yaboot"]
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_ppcMachine = iutil.getPPCMachine()
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_supportsMdRaidBoot = True
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@property
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def ppcMachine(self):
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return self._ppcMachine
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class IPSeriesPPC(PPC):
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_minBootPartSize = 4
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_maxBootPartSize = 10
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def bootDevice(self):
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bootDev = None
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# We want the first PReP partition.
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for device in self.anaconda.storage.partitions:
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if device.format.type == "prepboot":
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bootDev = device
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break
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return bootDev
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def bootloaderChoices(self, bl):
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ret = {}
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bootDev = self.bootDevice()
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if not bootDev:
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return ret
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if bootDev.type == "mdarray":
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ret["boot"] = (bootDev.name, N_("RAID Device"))
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ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))
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else:
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ret["boot"] = (bootDev.name, N_("PPC PReP Boot"))
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return ret
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def checkBootRequest(self, req):
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errors = PPC.checkBootRequest(self, req)
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bootPart = getattr(req, "partedPartition", None)
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if not bootPart:
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return errors
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# All of the above just checks the PPC PReP boot partitions. We still
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# need to make sure that whatever /boot is on also meets these criteria.
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if req == self.bootDevice():
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# However, this check only applies to prepboot.
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if bootPart.geometry.end * bootPart.geometry.device.sectorSize / (1024.0 * 1024) > 4096:
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errors.append(_("The boot partition must be within the first 4MB of the disk."))
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try:
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req = self.anaconda.storage.mountpoints["/boot"]
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except KeyError:
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req = self.anaconda.storage.rootDevice
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return errors + self.checkBootRequest(req)
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else:
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return errors
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def setDefaultPartitioning(self):
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ret = PPC.setDefaultPartitioning(self)
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ret.append(PartSpec(fstype="PPC PReP Boot", size=4,
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weight=self.weight(fstype="prepboot")))
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return ret
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def weight(self, fstype=None, mountpoint=None):
|
||
|
|
if fstype and fstype == "prepboot":
|
||
|
|
return 5000
|
||
|
|
elif mountpoint and mountpoint == "/boot":
|
||
|
|
return 2000
|
||
|
|
else:
|
||
|
|
return 0
|
||
|
|
|
||
|
|
class NewWorldPPC(PPC):
|
||
|
|
_diskLabelType = "mac"
|
||
|
|
_minBootPartSize = (800.00 / 1024.00)
|
||
|
|
_maxBootPartSize = 1
|
||
|
|
|
||
|
|
def bootDevice(self):
|
||
|
|
bootDev = None
|
||
|
|
|
||
|
|
for part in self.anaconda.storage.partitions:
|
||
|
|
if part.format.type == "appleboot" and self.validBootPartSize(part.size):
|
||
|
|
bootDev = part
|
||
|
|
# if we're only picking one, it might as well be the first
|
||
|
|
break
|
||
|
|
|
||
|
|
return bootDev
|
||
|
|
|
||
|
|
def bootloaderChoices(self, bl):
|
||
|
|
ret = {}
|
||
|
|
|
||
|
|
bootDev = self.bootDevice()
|
||
|
|
if not bootDev:
|
||
|
|
return ret
|
||
|
|
|
||
|
|
if bootDev.type == "mdarray":
|
||
|
|
ret["boot"] = (bootDev.name, N_("RAID Device"))
|
||
|
|
ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))
|
||
|
|
else:
|
||
|
|
ret["boot"] = (bootDev.name, N_("Apple Bootstrap"))
|
||
|
|
for (n, device) in enumerate(self.anaconda.storage.partitions):
|
||
|
|
if device.format.type == "appleboot" and device.path != bootDev.path:
|
||
|
|
ret["boot%d" % n] = (device.path, N_("Apple Bootstrap"))
|
||
|
|
|
||
|
|
return ret
|
||
|
|
|
||
|
|
def checkBootRequest(self, req):
|
||
|
|
errors = PPC.checkBootRequest(self, req)
|
||
|
|
|
||
|
|
if not req or req.type != "partition" or not req.disk:
|
||
|
|
return errors
|
||
|
|
|
||
|
|
disk = req.disk.format.partedDisk
|
||
|
|
|
||
|
|
# Check that we're a Mac disk label
|
||
|
|
if not disk.type == self._diskLabelType.name:
|
||
|
|
errors.append(_("%s must have a mac disk label.") % req.disk.name)
|
||
|
|
|
||
|
|
# All of the above just checks the appleboot partitions. We still
|
||
|
|
# need to make sure that whatever /boot is on also meets these criteria.
|
||
|
|
if req == self.bootDevice():
|
||
|
|
try:
|
||
|
|
req = self.anaconda.storage.mountpoints["/boot"]
|
||
|
|
except KeyError:
|
||
|
|
req = self.anaconda.storage.rootDevice
|
||
|
|
|
||
|
|
return errors + self.checkBootRequest(req)
|
||
|
|
else:
|
||
|
|
return errors
|
||
|
|
|
||
|
|
def setDefaultPartitioning(self):
|
||
|
|
ret = Platform.setDefaultPartitioning(self)
|
||
|
|
ret.append(PartSpec(fstype="Apple Bootstrap", size=1, maxSize=1,
|
||
|
|
weight=self.weight(fstype="appleboot")))
|
||
|
|
return ret
|
||
|
|
|
||
|
|
def weight(self, fstype=None, mountpoint=None):
|
||
|
|
if fstype and fstype == "appleboot":
|
||
|
|
return 5000
|
||
|
|
elif mountpoint and mountpoint == "/boot":
|
||
|
|
return 2000
|
||
|
|
else:
|
||
|
|
return 0
|
||
|
|
|
||
|
|
class PS3(PPC):
|
||
|
|
_diskLabelType = "msdos"
|
||
|
|
|
||
|
|
def __init__(self, anaconda):
|
||
|
|
PPC.__init__(self, anaconda)
|
||
|
|
|
||
|
|
class S390(Platform):
|
||
|
|
_packages = ["s390utils"]
|
||
|
|
|
||
|
|
def __init__(self, anaconda):
|
||
|
|
Platform.__init__(self, anaconda)
|
||
|
|
|
||
|
|
def diskLabelType(self, deviceType):
|
||
|
|
"""Return the disk label type as a string."""
|
||
|
|
if deviceType == parted.DEVICE_DASD:
|
||
|
|
return "dasd"
|
||
|
|
else:
|
||
|
|
return Platform.diskLabelType(self, deviceType)
|
||
|
|
|
||
|
|
class Sparc(Platform):
|
||
|
|
_diskLabelType = "sun"
|
||
|
|
|
||
|
|
@property
|
||
|
|
def minimumSector(self, disk):
|
||
|
|
(cylinders, heads, sectors) = disk.device.biosGeometry
|
||
|
|
start = long(sectors * heads)
|
||
|
|
start /= long(1024 / disk.device.sectorSize)
|
||
|
|
return start+1
|
||
|
|
|
||
|
|
class X86(EFI):
|
||
|
|
_bootFSTypes = ["ext4", "ext3", "ext2"]
|
||
|
|
_packages = ["grub"]
|
||
|
|
_supportsMdRaidBoot = True
|
||
|
|
|
||
|
|
def __init__(self, anaconda):
|
||
|
|
EFI.__init__(self, anaconda)
|
||
|
|
|
||
|
|
if self.isEfi:
|
||
|
|
self._diskLabelType = "gpt"
|
||
|
|
else:
|
||
|
|
self._diskLabelType = "msdos"
|
||
|
|
|
||
|
|
def bootDevice(self):
|
||
|
|
if self.isEfi:
|
||
|
|
return EFI.bootDevice(self)
|
||
|
|
else:
|
||
|
|
return Platform.bootDevice(self)
|
||
|
|
|
||
|
|
def bootloaderChoices(self, bl):
|
||
|
|
if self.isEfi:
|
||
|
|
return EFI.bootloaderChoices(self, bl)
|
||
|
|
|
||
|
|
bootDev = self.bootDevice()
|
||
|
|
ret = {}
|
||
|
|
|
||
|
|
if not bootDev:
|
||
|
|
return {}
|
||
|
|
|
||
|
|
if bootDev.type == "mdarray":
|
||
|
|
ret["boot"] = (bootDev.name, N_("RAID Device"))
|
||
|
|
ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))
|
||
|
|
else:
|
||
|
|
ret["boot"] = (bootDev.name, N_("First sector of boot partition"))
|
||
|
|
ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))
|
||
|
|
|
||
|
|
return ret
|
||
|
|
|
||
|
|
@property
|
||
|
|
def maxBootPartSize(self):
|
||
|
|
if self.isEfi:
|
||
|
|
return EFI._maxBootPartSize
|
||
|
|
else:
|
||
|
|
return Platform._maxBootPartSize
|
||
|
|
|
||
|
|
@property
|
||
|
|
def minBootPartSize(self):
|
||
|
|
if self.isEfi:
|
||
|
|
return EFI._minBootPartSize
|
||
|
|
else:
|
||
|
|
return Platform._minBootPartSize
|
||
|
|
|
||
|
|
def setDefaultPartitioning(self):
|
||
|
|
if self.isEfi:
|
||
|
|
return EFI.setDefaultPartitioning(self)
|
||
|
|
else:
|
||
|
|
return Platform.setDefaultPartitioning(self)
|
||
|
|
|
||
|
|
def getPlatform(anaconda):
|
||
|
|
"""Check the architecture of the system and return an instance of a
|
||
|
|
Platform subclass to match. If the architecture could not be determined,
|
||
|
|
raise an exception."""
|
||
|
|
if iutil.isAlpha():
|
||
|
|
return Alpha(anaconda)
|
||
|
|
elif iutil.isIA64():
|
||
|
|
return IA64(anaconda)
|
||
|
|
elif iutil.isPPC():
|
||
|
|
ppcMachine = iutil.getPPCMachine()
|
||
|
|
|
||
|
|
if (ppcMachine == "PMac" and iutil.getPPCMacGen() == "NewWorld"):
|
||
|
|
return NewWorldPPC(anaconda)
|
||
|
|
elif ppcMachine in ["iSeries", "pSeries"]:
|
||
|
|
return IPSeriesPPC(anaconda)
|
||
|
|
elif ppcMachine == "PS3":
|
||
|
|
return PS3(anaconda)
|
||
|
|
else:
|
||
|
|
raise SystemError, "Unsupported PPC machine type"
|
||
|
|
elif iutil.isS390():
|
||
|
|
return S390(anaconda)
|
||
|
|
elif iutil.isSparc():
|
||
|
|
return Sparc(anaconda)
|
||
|
|
elif iutil.isX86():
|
||
|
|
return X86(anaconda)
|
||
|
|
else:
|
||
|
|
raise SystemError, "Could not determine system architecture."
|