summaryrefslogtreecommitdiffstats
path: root/backend.py
blob: 3008671465385564302b49d7263ead6762a9551c (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
#
# backend.py: Interface for installation backends
#
# Copyright (C) 2005, 2006, 2007  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/>.
#
# Author(s): Paul Nasrat <pnasrat@redhat.com>
#            Jeremy Katz <katzj@redhat.com>
#

import glob
import shutil
import iutil
import os, sys
import logging
from syslogd import syslog
from constants import *

import isys
import kickstart
import packages

from flags import flags
log = logging.getLogger("anaconda")

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

class AnacondaBackend:
    def __init__(self, anaconda):
        """Abstract backend class all backends should inherit from this
           @param instPath: root path for the installation to occur"""

        self.instPath = anaconda.rootPath
        self.instLog = None
        self.modeText = ""

        # some backends may not support upgrading
        self.supportsUpgrades = True
        self.supportsPackageSelection = False

        # some backends may have a special case for rootfs formatting
        # FIXME: we should handle this a little more elegantly
        self.skipFormatRoot = False

        self._loopbackFile = None

    def postAction(self, anaconda):
        pass

    def doPreSelection(self, intf, id, instPath):
        pass

    def doPostSelection(self, anaconda):
        pass

    def doPreInstall(self, anaconda):
        self.initLog(anaconda.id, anaconda.rootPath)

    def copyFirmware(self, anaconda):
        # Multiple driver disks may be loaded, so we need to glob for all
        # the firmware files in all the driver disk directories.
        for f in glob.glob("/tmp/DD-*/firmware/*"):
            try:
                shutil.copyfile(f, "%s/lib/firmware/" % anaconda.rootPath)
            except IOError, e:
                log.error("Could not copy firmware file %s: %s" % (f, e.strerror))

    def doPostInstall(self, anaconda):
        if anaconda.id.extraModules:
            self.copyFirmware(anaconda)

            for (n, arch, tag) in self.kernelVersionList(anaconda.rootPath):
                packages.recreateInitrd(n, anaconda.rootPath)

        for d in glob.glob("/tmp/DD-*"):
            shutil.copytree(d, "/root/" + os.path.basename(d))

        sys.stdout.flush()
        if flags.setupFilesystems:
            syslog.stop()

    def doInstall(self, anaconda):
        log.warning("doInstall not implemented for backend!")
        raise NotImplementedError

    def initLog(self, id, instPath):
        upgrade = id.getUpgrade()

        if not os.path.isdir(instPath + "/root"):
            iutil.mkdirChain(instPath + "/root")

        if upgrade:
            logname = '/root/upgrade.log'
        else:
            logname = '/root/install.log'

        instLogName = instPath + logname
        try:
            shutil.rmtree (instLogName)
        except OSError:
            pass

        self.instLog = open(instLogName, "w+")

       # dont start syslogd if we arent creating filesystems
        if flags.setupFilesystems:
            syslogname = "%s%s.syslog" % (instPath, logname)
            try:
                shutil.rmtree (syslogname)
            except OSError:
                pass
            syslog.start (instPath, syslogname)
        else:
            syslogname = None

        if upgrade:
            self.modeText = _("Upgrading %s\n")
        else:
            self.modeText = _("Installing %s\n")

    def mountInstallImage(self, anaconda, installimg):
        if not flags.setupFilesystems:
            return

        if self._loopbackFile and os.path.exists(self._loopbackFile):
            return

        # If we've booted off the first CD/DVD (so, not the boot.iso) then
        # copy the install.img to the filesystem and switch loopback devices
        # to there.  Otherwise we won't be able to unmount and swap media.
        if not anaconda.mediaDevice or not os.path.exists(installimg):
            return

        self._loopbackFile = "%s%s/rhinstall-install.img" % (anaconda.rootPath,
                             anaconda.id.fsset.filesystemSpace(anaconda.rootPath)[0][0])

        try:
            win = anaconda.intf.waitWindow(_("Copying File"),
                    _("Transferring install image to hard drive..."))
            shutil.copyfile(installimg, self._loopbackFile)
            win.pop()
        except Exception, e:
            if win:
                win.pop()

            log.critical("error transferring install.img: %s" %(e,))

            if isinstance(e, IOError) and e.errno == 5:
                msg = _("An error occurred transferring the install image "
                        "to your hard drive.  This is probably due to "
                        "bad media.")
            else:
                msg = _("An error occurred transferring the install image "
                        "to your hard drive. You are probably out of disk "
                        "space.")

            anaconda.intf.messageWindow(_("Error"), msg)
            try:
                os.unlink(self._loopbackFile)
            except:
                pass

            return 1

        isys.lochangefd("/dev/loop0", self._loopbackFile)
        isys.umount("/mnt/stage2")

    def removeInstallImage(self):
        if self._loopbackFile:
            try:
                os.unlink(self._loopbackFile)
            except SystemError:
                pass

    def kernelVersionList(self, rootPath="/"):
        return []

    def getMinimumSizeMB(self, part):
        """Return the minimal size for part in megabytes if we can."""
        return 0

    def doBackendSetup(self, anaconda):
        log.warning("doBackendSetup not implemented for backend!")
        raise NotImplementedError

    def groupExists(self, group):
        log.warning("groupExists not implemented for backend!")
        raise NotImplementedError

    def selectGroup(self, group, *args):
        log.warning("selectGroup not implemented for backend!")
        raise NotImplementedError

    def deselectGroup(self, group, *args):
        log.warning("deselectGroup not implemented for backend!")
        raise NotImplementedError

    def packageExists(self, pkg):
        log.warning("packageExists not implemented for backend!")
        raise NotImplementedError
    
    def selectPackage(self, pkg, *args):
        log.warning("selectPackage not implemented for backend!")
        raise NotImplementedError

    def deselectPackage(self, pkg, *args):
        log.warning("deselectPackage not implemented for backend!")
        raise NotImplementedError

    def getDefaultGroups(self, anaconda):
        log.warning("getDefaultGroups not implemented for backend!")
        raise NotImplementedError

    def resetPackageSelections(self):
        # we just leave this one unimplemented if it's not needed
        pass

    # write out the %packages section of anaconda-ks.cfg
    def writePackagesKS(self, f, anaconda):
        log.warning("writePackagesKS not implemented for backend!")
        raise NotImplementedError

    # write out any config files that live on the installed system
    # (e.g., /etc/yum.repos.d/* files)
    def writeConfiguration(self):
        log.warning("writeConfig not implemented for backend!")
        raise NotImplementedError

    # write out any other kickstart bits the backend requires - no warning
    # here because this may not be needed
    def writeKS(self, f):
        pass

    def getRequiredMedia(self):
        log.warning("getRequiredMedia not implmented for backend!")
        raise NotImplementedError

    def complete(self, anaconda):
        pass

def doBackendSetup(anaconda):
    if anaconda.backend.doBackendSetup(anaconda) == DISPATCH_BACK:
        return DISPATCH_BACK

    if anaconda.id.upgrade:
        anaconda.backend.checkSupportedUpgrade(anaconda)
        iutil.writeRpmPlatform(anaconda.rootPath)

def doPostSelection(anaconda):
    return anaconda.backend.doPostSelection(anaconda)

def doPreInstall(anaconda):
    anaconda.backend.doPreInstall(anaconda)

def doPostInstall(anaconda):
    anaconda.backend.doPostInstall(anaconda)

def doInstall(anaconda):
    return anaconda.backend.doInstall(anaconda)

# does this need to be per-backend?  we'll just leave here until it does :)
def doBasePackageSelect(anaconda):
    anaconda.backend.resetPackageSelections()
    if anaconda.isKickstart:
        kickstart.selectPackages(anaconda)
    else:
        anaconda.id.instClass.setPackageSelection(anaconda)
        anaconda.id.instClass.setGroupSelection(anaconda)

def writeConfiguration(anaconda):
    log.info("Writing main configuration")
    if not flags.test:
        anaconda.id.write()
        anaconda.backend.writeConfiguration()