qubes-installer-qubes-os/anaconda/booty/alpha.py

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import os
import iutil
from booty import BootyNoKernelWarning
from bootloaderInfo import *
from util import getDiskPart
class alphaBootloaderInfo(bootloaderInfo):
def wholeDevice (self, path):
(device, foo) = getDiskPart(path, self.storage)
return device
def partitionNum (self, path):
# getDiskPart returns part numbers 0-based; we need it one based
# *sigh*
(foo, partitionNumber) = getDiskPart(path, self.storage)
return partitionNumber + 1
def writeAboot(self, instRoot, bl, kernelList,
chainList, defaultDev):
rootDevice = self.storage.rootDevice
try:
bootDevice = self.storage.mountpoints["/boot"]
except KeyError:
bootDevice = rootDevice
bootnotroot = bootDevice != rootDevice
confFile = instRoot + self.configfile
# If /etc/aboot.conf already exists we rename it
# /etc/aboot.conf.rpmsave.
if os.path.isfile(confFile):
os.rename (confFile, confFile + ".rpmsave")
# Then we create the necessary files. If the root device isn't
# the boot device, we create /boot/etc/ where the aboot.conf
# will live, and we create /etc/aboot.conf as a symlink to it.
if bootnotroot:
# Do we have /boot/etc ? If not, create one
if not os.path.isdir (instRoot + '/boot/etc'):
os.mkdir(instRoot + '/boot/etc', 0755)
# We install the symlink (/etc/aboot.conf has already been
# renamed in necessary.)
os.symlink("../boot" + self.configfile, confFile)
cfPath = instRoot + "/boot" + self.configfile
# Kernel path is set to / because a boot partition will
# be a root on its own.
kernelPath = '/'
# Otherwise, we just need to create /etc/aboot.conf.
else:
cfPath = confFile
kernelPath = self.kernelLocation
# If we already have an aboot.conf, rename it
if os.access (cfPath, os.R_OK):
self.perms = os.stat(cfPath)[0] & 0777
os.rename(cfPath, cfPath + '.rpmsave')
# Now we're going to create and populate cfPath.
f = open (cfPath, 'w+')
f.write ("# aboot default configurations\n")
if bootnotroot:
f.write ("# NOTICE: You have a /boot partition. This means that\n")
f.write ("# all kernel paths are relative to /boot/\n")
# bpn is the boot partition number.
bpn = self.partitionNum(bootDevice.path)
lines = 0
# We write entries line using the following format:
# <line><bpn><kernel-name> root=<rootdev> [options]
# We get all the kernels we need to know about in kernelList.
for (kernel, tag, version) in kernelList:
kernelTag = "-" + version
kernelFile = "%svmlinuz%s" %(kernelPath, kernelTag)
f.write("%d:%d%s" %(lines, bpn, kernelFile))
# See if we can come up with an initrd argument that exists
initrd = self.makeInitrd(kernelTag, instRoot)
if initrd:
f.write(" initrd=%s%s" %(kernelPath, initrd))
realroot = rootDevice.fstabSpec
f.write(" root=%s" %(realroot,))
args = self.args.get()
if args:
f.write(" %s" %(args,))
f.write("\n")
lines = lines + 1
# We're done writing the file
f.close ()
del f
# Now we're ready to write the relevant boot information. wbd
# is the whole boot device, bdpn is the boot device partition
# number.
wbd = self.wholeDevice (bootDevice.path)
bdpn = self.partitionNum (bootDevice.path)
# Calling swriteboot. The first argument is the disk to write
# to and the second argument is a path to the bootstrap loader
# file.
args = [("/dev/%s" % wbd), "/boot/bootlx"]
rc = iutil.execWithRedirect ('/sbin/swriteboot', args,
root = instRoot,
stdout = "/dev/tty5",
stderr = "/dev/tty5")
if rc:
return rc
# Calling abootconf to configure the installed aboot. The
# first argument is the disk to use, the second argument is
# the number of the partition on which aboot.conf resides.
# It's always the boot partition whether it's / or /boot (with
# the mount point being omitted.)
args = [("/dev/%s" % wbd), str (bdpn)]
rc = iutil.execWithRedirect ('/sbin/abootconf', args,
root = instRoot,
stdout = "/dev/tty5",
stderr = "/dev/tty5")
if rc:
return rc
return 0
def write(self, instRoot, bl, kernelList, chainList, defaultDev):
if len(kernelList) < 1:
raise BootyNoKernelWarning
return self.writeAboot(instRoot, bl, kernelList,
chainList, defaultDev)
def __init__(self, anaconda):
bootloaderInfo.__init__(self, anaconda)
self.useGrubVal = 0
self._configdir = "/etc"
self._configname = "aboot.conf"
# self.kernelLocation is already set to what we need.
self.password = None
self.pure = None