summaryrefslogtreecommitdiffstats
path: root/platform.py
blob: 7e8e34f0b894aab49e2ba5fad16fa050b2aa71be (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
#
# platform.py:  Architecture-specific information
#
# Copyright (C) 2009
# Red Hat, Inc.  All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Authors: Chris Lumens <clumens@redhat.com>
#

import iutil
import parted
import storage
from storage.errors import *
from storage.formats import *
from storage.partspec import *

import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)
N_ = lambda x: x

class Platform(object):
    """Platform

       A class containing platform-specific information and methods for use
       during installation.  The intent is to eventually encapsulate all the
       architecture quirks in one place to avoid lots of platform checks
       throughout anaconda."""
    _bootFSType = "ext3"
    _bootloaderPackage = None
    _diskType = parted.diskType["msdos"]
    _isEfi = iutil.isEfi()
    _minimumSector = 0
    _supportsMdRaidBoot = False
    _minBootPartSize = 50
    _maxBootPartSize = 0

    def __init__(self, anaconda):
        """Creates a new Platform object.  This is basically an abstract class.
           You should instead use one of the platform-specific classes as
           returned by getPlatform below.  Not all subclasses need to provide
           all the methods in this class."""
        self.anaconda = anaconda

    def _mntDict(self):
        """Return a dictionary mapping mount points to devices."""
        ret = {}
        for device in [d for d in self.anaconda.id.storage.devices if d.format.mountable]:
            ret[device.format.mountpoint] = device

        return ret

    def bootDevice(self):
        """Return the device where /boot is mounted."""
        if self.__class__ is Platform:
            raise NotImplementedError("bootDevice not implemented for this platform")

        mntDict = self._mntDict()
        return mntDict.get("/boot", mntDict.get("/"))

    @property
    def bootFSType(self):
        """Return the default filesystem type for the boot partition."""
        return self._bootFSType

    def bootloaderChoices(self, bl):
        """Return the default list of places to install the bootloader.
           This is returned as a dictionary of locations to (device, identifier)
           tuples.  If there is no boot device, an empty dictionary is
           returned."""
        if self.__class__ is Platform:
            raise NotImplementedError("bootloaderChoices not implemented for this platform")

        bootDev = self.bootDevice()
        ret = {}

        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_("First sector of boot partition"))
            ret["mbr"] = (bl.drivelist[0], N_("Master Boot Record (MBR)"))

        return ret

    @property
    def bootloaderPackage(self):
        return self._bootloaderPackage

    def checkBootRequest(self, req):
        """Perform an architecture-specific check on the boot device.  Not all
           platforms may need to do any checks.  Returns a list of errors if
           there is a problem, or [] otherwise."""
        errors = []

        if not req:
            return [_("You have not created a bootable partition.")]

        if req.type == "mdarray" and req.level != 1:
            errors.append(_("Bootable partitions can only be on RAID1 devices."))

        # can't have bootable partition on LV
        if req.type == "lvmlv":
            errors.append(_("Bootable partitions cannot be on a logical volume."))

        # most arches can't have boot on RAID
        if req.type == "mdarray" and not self.supportsMdRaidBoot:
            errors.append(_("Bootable partitions cannot be on a RAID device."))

        # Lots of filesystems types don't support /boot.
        if not req.format.bootable:
            errors.append(_("Bootable partitions cannot be on an %s filesystem.") % req.format.name)

        # vfat /boot is insane.
        if req == self.anaconda.id.storage.fsset.rootDevice and req.format.type == "vfat":
            errors.append(_("Bootable partitions cannot be on an %s filesystem.") % req.format.type)

        if req.type == "luks/dm-crypt":
            # Handle encrypted boot on a partition.
            errors.append(_("Bootable partitions cannot be on an encrypted block device"))
        else:
            # Handle encrypted boot on more complicated devices.
            for dev in map(lambda d: d.type == "luks/dm-crypt", self.anaconda.id.storage.devices):
                if req in self.anaconda.id.storage.deviceDeps(dev):
                    errors.append(_("Bootable partitions cannot be on an encrypted block device"))

        return errors

    @property
    def diskType(self):
        """Return the disk label type as a parted.DiskType."""
        return self._diskType

    @diskType.setter
    def diskType(self, value):
        """Sets the disk label type."""
        self._diskType = value

    @property
    def isEfi(self):
        return self._isEfi

    @property
    def minimumSector(self, disk):
        """Return the minimum starting sector for the provided disk."""
        return self._minimumSector

    def setDefaultPartitioning(self):
        """Return the default platform-specific partitioning information."""
        return [PartSpec(mountpoint="/boot", fstype=self.bootFSType, size=200,
                         weight=self.weight(mountpoint="/boot"))]

    @property
    def supportsMdRaidBoot(self):
        """Does the platform support /boot on MD RAID?"""
        return self._supportsMdRaidBoot

    @property
    def minBootPartSize(self):
        return self._minBootPartSize

    @property
    def maxBootPartSize(self):
        return self._maxBootPartSize

    def validBootPartSize(self, size):
        """ Is the given size (in MB) acceptable for a boot device? """
        if not isinstance(size, int) and not isinstance(size, float):
            return False

        return ((not self.minBootPartSize or size >= self.minBootPartSize)
                and
                (not self.maxBootPartSize or size <= self.maxBootPartSize))

    def weight(self, fstype=None, mountpoint=None):
        """ Given an fstype (as a string) or a mountpoint, return an integer
            for the base sorting weight.  This is used to modify the sort
            algorithm for partition requests, mainly to make sure bootable
            partitions and /boot are placed where they need to be."""
        return 0

class EFI(Platform):
    _diskType = parted.diskType["gpt"]
    _minBootPartSize = 50
    _maxBootPartSize = 256

    def bootDevice(self):
        mntDict = self._mntDict()
        return mntDict.get("/boot/efi")

    def bootloaderChoices(self, bl):
        bootDev = self.bootDevice()
        ret = {}

        if not bootDev:
            return ret

        ret["boot"] = (bootDev.name, N_("EFI System Partition"))
        return ret

    def checkBootRequest(self, req):
        if not req:
            return [_("You have not created a /boot/efi partition.")]

        errors = Platform.checkBootRequest(self, req)

        if req.format.mountpoint == "/boot":
            if not req.format.type.startswith("ext"):
                errors.append(_("/boot is not on an ext2 filesystem."))
        elif req.format.mountpoint == "/boot/efi":
            if req.format.type != "efi":
                errors.append(_("/boot/efi is not EFI."))

        return errors

    def setDefaultPartitioning(self):
        ret = Platform.setDefaultPartitioning(self)

        # Only add the EFI partition to the default set if there's not already
        # one on the system.
        if len(filter(lambda dev: dev.format.type == "efi" and self.validBootPartSize(dev.size),
                      self.anaconda.id.storage.partitions)) == 0:
            ret.append(PartSpec(mountpoint="/boot/efi", fstype="efi", size=20,
                                maxSize=200, grow=True, weight=self.weight(fstype="efi")))

        return ret

    def weight(self, fstype=None, mountpoint=None):
        if fstype and fstype == "efi" or mountpoint and mountpoint == "/boot/efi":
            return 5000
        elif mountpoint and mountpoint == "/boot":
            return 2000
        else:
            return 0

class Alpha(Platform):
    _diskType = parted.diskType["bsd"]

    def checkBootRequest(self, req):
        errors = Platform.checkBootRequest(self, req)

        disk = req.disk
        if not disk:
            raise DeviceError("Boot partition has no disk")

        disk = disk.partedDisk

        # Check that we're a BSD disk label
        if not disk.type == self.diskType.name:
            errors.append(_("%s must have a bsd disk label.") % req.disk.name)

        # The first free space should start at the beginning of the drive and
        # span for a megabyte or more.
        free = disk.getFirstPartition()
        while free:
            if free.type & parted.PARTITION_FREESPACE:
                break

            free = free.nextPartition()

        if not free or free.geoemtry.start != 1L or free.getSize(unit="MB") < 1:
            errors.append(_("The disk %s requires at least 1MB of free space at the beginning.") % req.disk.name)

        return errors

class IA64(EFI):
    _bootloaderPackage = "elilo"

    def __init__(self, anaconda):
        EFI.__init__(self, anaconda)

class PPC(Platform):
    _bootloaderPackage = "yaboot"
    _ppcMachine = iutil.getPPCMachine()
    _supportsMdRaidBoot = True

    @property
    def ppcMachine(self):
        return self._ppcMachine

class IPSeriesPPC(PPC):
    _minBootPartSize = 4
    _maxBootPartSize = 10

    def bootDevice(self):
        bootDev = None

        # We want the first PReP partition.
        for device in self.anaconda.id.storage.partitions:
            if device.format.type == "prepboot":
                bootDev = device
                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_("PPC PReP Boot"))

        return ret

    def checkBootRequest(self, req):
        errors = PPC.checkBootRequest(self, req)

        bootPart = getattr(req, "partedPartition", None)
        if not bootPart:
            raise DeviceError("Boot partition has no partedPartition")

        if bootPart.geometry.end * bootPart.geometry.device.sectorSize / (1024.0 * 1024) > 4096:
            errors.append(_("The boot partition must be within the first 4MB of the disk."))

        return errors

    def setDefaultPartitioning(self):
        ret = PPC.setDefaultPartitioning(self)
        ret.append(PartSpec(fstype="PPC PReP Boot", size=4,
                            weight=self.weight(fstype="prepboot")))
        return ret

    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):
    _diskType = parted.diskType["mac"]
    _minBootPartSize = (800.00 / 1024.00)
    _maxBootPartSize = 1

    def bootDevice(self):
        bootDev = None

        for part in self.anaconda.id.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.id.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)

        disk = req.disk
        if not disk:
            raise DeviceError("Boot partition has no disk")

        disk = disk.partedDisk

        # Check that we're a Mac disk label
        if not disk.type == self.diskType.name:
            errors.append(_("%s must have a mac disk label.") % req.disk.name)

        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):
    _diskType = parted.diskType["msdos"]

    def __init__(self, anaconda):
        PPC.__init__(self, anaconda)

class S390(Platform):
    _bootloaderPackage = "s390utils"

    def __init__(self, anaconda):
        Platform.__init__(self, anaconda)

class Sparc(Platform):
    _diskType = parted.diskType["sun"]

    @property
    def minimumSector(self, disk):
        (cylinders, heads, sector) = disk.device.biosGeometry
        start = long(sectors * heads)
        start /= long(1024 / disk.device.sectorSize)
        return start+1

class X86(EFI):
    _bootloaderPackage = "grub"
    _supportsMdRaidBoot = True

    def __init__(self, anaconda):
        EFI.__init__(self, anaconda)

        if self.isEfi:
            self.diskType = parted.diskType["gpt"]
        else:
            self.diskType = parted.diskType["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."