qubes-installer-qubes-os/booty/bootloaderInfo.py

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#
# bootloaderInfo.py - bootloader config object used in creation of new
# bootloader configs. Originally from anaconda
#
# Jeremy Katz <katzj@redhat.com>
# Erik Troan <ewt@redhat.com>
# Peter Jones <pjones@redhat.com>
#
# Copyright 2005-2008 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import os, sys
import crypt
import random
import shutil
import string
import struct
from copy import copy
import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)
N_ = lambda x: x
from lilo import LiloConfigFile
from flags import flags
import iutil
import isys
from product import *
import booty
import checkbootloader
from util import getDiskPart
if not iutil.isS390():
import block
dosFilesystems = ('FAT', 'fat16', 'fat32', 'ntfs', 'hpfs')
def doesDualBoot():
if iutil.isX86():
return 1
return 0
def checkForBootBlock(device):
fd = os.open(device, os.O_RDONLY)
buf = os.read(fd, 512)
os.close(fd)
if len(buf) >= 512 and \
struct.unpack("H", buf[0x1fe: 0x200]) == (0xaa55,):
return True
return False
# hack and a half
# there's no guarantee that data is written to the disk and grub
# reads both the filesystem and the disk. suck.
def syncDataToDisk(dev, mntpt, instRoot = "/"):
isys.sync()
isys.sync()
isys.sync()
# and xfs is even more "special" (#117968)
if isys.readFSType(dev) == "xfs":
iutil.execWithRedirect("/usr/sbin/xfs_freeze",
["-f", mntpt],
stdout = "/dev/tty5",
stderr = "/dev/tty5",
root = instRoot)
iutil.execWithRedirect("/usr/sbin/xfs_freeze",
["-u", mntpt],
stdout = "/dev/tty5",
stderr = "/dev/tty5",
root = instRoot)
def rootIsDevice(dev):
if dev.startswith("LABEL=") or dev.startswith("UUID="):
return False
return True
class KernelArguments:
def getDracutStorageArgs(self, devices):
args = []
types = {}
for device in devices:
for d in self.anaconda.storage.devices:
if d is not device and not device.dependsOn(d):
continue
s = d.dracutSetupString()
types[s.split("=")[0]] = True
if s not in args:
args.append(s)
import storage
if isinstance(d, storage.devices.NetworkStorageDevice):
s = self.anaconda.network.dracutSetupString(d)
if s not in args:
args.append(s)
for i in [ [ "rd_LUKS_UUID", "rd_NO_LUKS" ],
[ "rd_LVM_LV", "rd_NO_LVM" ],
[ "rd_MD_UUID", "rd_NO_MD" ],
[ "rd_DM_UUID", "rd_NO_DM" ] ]:
if not types.has_key(i[0]):
args.append(i[1])
return args
def get(self):
args = ""
bootArgs = []
rootDev = self.anaconda.storage.rootDevice
neededDevs = [ rootDev ]
if flags.cmdline.get("fips") == "1":
bootDev = self.anaconda.storage.mountpoints.get("/boot", rootDev)
bootArgs = [ "boot=%s" % bootDev.fstabSpec ]
if bootDev is not rootDev:
neededDevs = [ rootDev, bootDev ]
if self.anaconda.storage.fsset.swapDevices:
neededDevs.append(self.anaconda.storage.fsset.swapDevices[0])
for s in bootArgs + \
self.getDracutStorageArgs(neededDevs) + [
self.anaconda.instLanguage.dracutSetupString(),
self.anaconda.keyboard.dracutSetupString(),
self.args,
self.appendArgs ]:
s = s.strip()
if not s:
continue
if args:
args += " "
args += s
return args
def set(self, args):
self.args = args
self.appendArgs = ""
def getNoDracut(self):
args = self.args.strip() + " " + self.appendArgs.strip()
return args.strip()
def chandevget(self):
return self.cargs
def chandevset(self, args):
self.cargs = args
def append(self, args):
# don't duplicate the addition of an argument (#128492)
if self.args.find(args) != -1:
return
if self.appendArgs.find(args) != -1:
return
if self.appendArgs:
self.appendArgs += " "
self.appendArgs += args
def __init__(self, anaconda):
newArgs = []
cfgFilename = "/tmp/install.cfg"
self.anaconda = anaconda
if iutil.isS390():
self.cargs = []
f = open(cfgFilename)
for line in f:
try:
(vname,vparm) = line.split('=', 1)
vname = vname.strip()
vparm = vparm.replace('"','')
vparm = vparm.strip()
if vname == "CHANDEV":
self.cargs.append(vparm)
if vname == "QETHPARM":
self.cargs.append(vparm)
except Exception, e:
pass
f.close()
# look for kernel arguments we know should be preserved and add them
ourargs = ["speakup_synth", "apic", "noapic", "apm", "ide", "noht",
"acpi", "video", "pci", "nodmraid", "nompath", "nomodeset",
"noiswmd"]
if iutil.isS390():
ourargs.append("cio_ignore")
for arg in ourargs:
if not flags.cmdline.has_key(arg):
continue
val = flags.cmdline.get(arg, "")
if val:
newArgs.append("%s=%s" % (arg, val))
else:
newArgs.append(arg)
self.args = " ".join(newArgs)
self.appendArgs = ""
class BootImages:
"""A collection to keep track of boot images available on the system.
Examples would be:
('linux', 'Red Hat Linux', 'ext2'),
('Other', 'Other', 'fat32'), ...
"""
def __init__(self):
self.default = None
self.images = {}
def getImages(self):
"""returns dictionary of (label, longlabel, devtype) pairs
indexed by device"""
# return a copy so users can modify it w/o affecting us
return copy(self.images)
def setDefault(self, default):
# default is a device
self.default = default
def getDefault(self):
return self.default
# Construct a dictionary mapping device names to (OS, product, type)
# tuples.
def setup(self, storage):
devices = {}
bootDevs = self.availableBootDevices(storage)
for (dev, type) in bootDevs:
devices[dev.name] = 1
# These partitions have disappeared
for dev in self.images.keys():
if not devices.has_key(dev):
del self.images[dev]
# These have appeared
for (dev, type) in bootDevs:
if not self.images.has_key(dev.name):
if type in dosFilesystems and doesDualBoot():
self.images[dev.name] = ("Other", "Other", type)
elif type in ("hfs", "hfs+") and iutil.getPPCMachine() == "PMac":
self.images[dev.name] = ("Other", "Other", type)
else:
self.images[dev.name] = (None, None, type)
if not self.images.has_key(self.default):
self.default = storage.rootDevice.name
(label, longlabel, type) = self.images[self.default]
if not label:
self.images[self.default] = ("linux", productName, type)
# Return a list of (storage.Device, string) tuples that are bootable
# devices. The string is the type of the device, which is just a string
# like "vfat" or "swap" or "lvm".
def availableBootDevices(self, storage):
import parted
retval = []
foundDos = False
foundAppleBootstrap = False
for part in [p for p in storage.partitions if p.exists]:
# Skip extended, metadata, freespace, etc.
if part.partType not in (parted.PARTITION_NORMAL, parted.PARTITION_LOGICAL) or not part.format:
continue
type = part.format.type
if type in dosFilesystems and not foundDos and doesDualBoot() and \
not part.getFlag(parted.PARTITION_DIAG):
try:
bootable = checkForBootBlock(part.path)
retval.append((part, type))
foundDos = True
except:
pass
elif type in ["ntfs", "hpfs"] and not foundDos and \
doesDualBoot() and not part.getFlag(parted.PARTITION_DIAG):
retval.append((part, type))
# maybe questionable, but the first ntfs or fat is likely to
# be the correct one to boot with XP using ntfs
foundDos = True
elif type == "appleboot" and iutil.getPPCMachine() == "PMac" and part.bootable:
foundAppleBootstrap = True
elif type in ["hfs", "hfs+"] and foundAppleBootstrap:
# questionable for same reason as above, but on mac this time
retval.append((part, type))
rootDevice = storage.rootDevice
if not rootDevice or not rootDevice.format:
raise ValueError, ("Trying to pick boot devices but do not have a "
"sane root partition. Aborting install.")
retval.append((rootDevice, rootDevice.format.type))
retval.sort()
return retval
class bootloaderInfo(object):
def getConfigFileName(self):
if not self._configname:
raise NotImplementedError
return self._configname
configname = property(getConfigFileName, None, None, \
"bootloader config file name")
def getConfigFileDir(self):
if not self._configdir:
raise NotImplementedError
return self._configdir
configdir = property(getConfigFileDir, None, None, \
"bootloader config file directory")
def getConfigFilePath(self):
return "%s/%s" % (self.configdir, self.configname)
configfile = property(getConfigFilePath, None, None, \
"full path and name of the real config file")
def setUseGrub(self, val):
pass
def useGrub(self):
return self.useGrubVal
def setPassword(self, val, isCrypted = 1):
pass
def getPassword(self):
pass
def getDevice(self):
return self.device
def setDevice(self, device):
self.device = device
(dev, part) = getDiskPart(device, self.storage)
if part is None:
self.defaultDevice = "mbr"
else:
self.defaultDevice = "partition"
def makeInitrd(self, kernelTag, instRoot):
initrd = "initrd%s.img" % kernelTag
if os.access(instRoot + "/boot/" + initrd, os.R_OK):
return initrd
initrd = "initramfs%s.img" % kernelTag
if os.access(instRoot + "/boot/" + initrd, os.R_OK):
return initrd
return None
def getBootloaderConfig(self, instRoot, bl, kernelList,
chainList, defaultDev):
images = bl.images.getImages()
confFile = instRoot + self.configfile
# on upgrade read in the lilo config file
lilo = LiloConfigFile ()
self.perms = 0600
if os.access (confFile, os.R_OK):
self.perms = os.stat(confFile)[0] & 0777
lilo.read(confFile)
os.rename(confFile, confFile + ".rpmsave")
# if it's an absolute symlink, just get it out of our way
elif (os.path.islink(confFile) and os.readlink(confFile)[0] == '/'):
os.rename(confFile, confFile + ".rpmsave")
# Remove any invalid entries that are in the file; we probably
# just removed those kernels.
for label in lilo.listImages():
(fsType, sl, path, other) = lilo.getImage(label)
if fsType == "other": continue
if not os.access(instRoot + sl.getPath(), os.R_OK):
lilo.delImage(label)
lilo.addEntry("prompt", replace = 0)
lilo.addEntry("timeout", self.timeout or "20", replace = 0)
rootDev = self.storage.rootDevice
if rootDev.name == defaultDev.name:
lilo.addEntry("default", kernelList[0][0])
else:
lilo.addEntry("default", chainList[0][0])
for (label, longlabel, version) in kernelList:
kernelTag = "-" + version
kernelFile = self.kernelLocation + "vmlinuz" + kernelTag
try:
lilo.delImage(label)
except IndexError, msg:
pass
sl = LiloConfigFile(imageType = "image", path = kernelFile)
initrd = self.makeInitrd(kernelTag, instRoot)
sl.addEntry("label", label)
if initrd:
sl.addEntry("initrd", "%s%s" %(self.kernelLocation, initrd))
sl.addEntry("read-only")
append = "%s" %(self.args.get(),)
realroot = rootDev.fstabSpec
if rootIsDevice(realroot):
sl.addEntry("root", rootDev.path)
else:
if len(append) > 0:
append = "%s root=%s" %(append,realroot)
else:
append = "root=%s" %(realroot,)
if len(append) > 0:
sl.addEntry('append', '"%s"' % (append,))
lilo.addImage (sl)
for (label, longlabel, device) in chainList:
if ((not label) or (label == "")):
continue
try:
(fsType, sl, path, other) = lilo.getImage(label)
lilo.delImage(label)
except IndexError:
sl = LiloConfigFile(imageType = "other",
path = "/dev/%s" %(device))
sl.addEntry("optional")
sl.addEntry("label", label)
lilo.addImage (sl)
# Sanity check #1. There could be aliases in sections which conflict
# with the new images we just created. If so, erase those aliases
imageNames = {}
for label in lilo.listImages():
imageNames[label] = 1
for label in lilo.listImages():
(fsType, sl, path, other) = lilo.getImage(label)
if sl.testEntry('alias'):
alias = sl.getEntry('alias')
if imageNames.has_key(alias):
sl.delEntry('alias')
imageNames[alias] = 1
# Sanity check #2. If single-key is turned on, go through all of
# the image names (including aliases) (we just built the list) and
# see if single-key will still work.
if lilo.testEntry('single-key'):
singleKeys = {}
turnOff = 0
for label in imageNames.keys():
l = label[0]
if singleKeys.has_key(l):
turnOff = 1
singleKeys[l] = 1
if turnOff:
lilo.delEntry('single-key')
return lilo
def write(self, instRoot, bl, kernelList, chainList, defaultDev):
rc = 0
if len(kernelList) >= 1:
config = self.getBootloaderConfig(instRoot, bl,
kernelList, chainList,
defaultDev)
rc = config.write(instRoot + self.configfile, perms = self.perms)
else:
raise booty.BootyNoKernelWarning
return rc
def getArgList(self):
args = []
if self.defaultDevice is None:
args.append("--location=none")
return args
args.append("--location=%s" % (self.defaultDevice,))
args.append("--driveorder=%s" % (",".join(self.drivelist)))
if self.args.getNoDracut():
args.append("--append=\"%s\"" %(self.args.getNoDracut()))
return args
def writeKS(self, f):
f.write("bootloader")
for arg in self.getArgList():
f.write(" " + arg)
f.write("\n")
def updateDriveList(self, sortedList=[]):
# bootloader is unusual in that we only want to look at disks that
# have disklabels -- no partitioned md or unpartitioned disks
disks = self.storage.disks
partitioned = self.storage.partitioned
self._drivelist = [d.name for d in disks if d in partitioned]
self._drivelist.sort(self.storage.compareDisks)
# If we're given a sort order, make sure the drives listed in it
# are put at the head of the drivelist in that order. All other
# drives follow behind in whatever order they're found.
if sortedList != []:
revSortedList = sortedList
revSortedList.reverse()
for i in revSortedList:
try:
ele = self._drivelist.pop(self._drivelist.index(i))
self._drivelist.insert(0, ele)
except:
pass
def _getDriveList(self):
if self._drivelist is not None:
return self._drivelist
self.updateDriveList()
return self._drivelist
def _setDriveList(self, val):
self._drivelist = val
drivelist = property(_getDriveList, _setDriveList)
def __init__(self, anaconda):
self.args = KernelArguments(anaconda)
self.images = BootImages()
self.device = None
self.defaultDevice = None # XXX hack, used by kickstart
self.useGrubVal = 0 # only used on x86
self._configdir = None
self._configname = None
self.kernelLocation = "/boot/"
self.password = None
self.pure = None
self.above1024 = 0
self.timeout = None
self.storage = anaconda.storage
# this has somewhat strange semantics. if 0, act like a normal
# "install" case. if 1, update lilo.conf (since grubby won't do that)
# and then run lilo or grub only.
# XXX THIS IS A HACK. implementation details are only there for x86
self.doUpgradeOnly = 0
self.kickstart = 0
self._drivelist = None
if flags.serial != 0:
options = ""
device = ""
console = flags.cmdline.get("console", "")
# the options are everything after the comma
comma = console.find(",")
if comma != -1:
options = console[comma:]
device = console[:comma]
else:
device = console
if not device and iutil.isIA64():
self.serialDevice = "ttyS0"
self.serialOptions = ""
else:
self.serialDevice = device
# don't keep the comma in the options
self.serialOptions = options[1:]
if self.serialDevice:
self.args.append("console=%s%s" %(self.serialDevice, options))
self.serial = 1
self.timeout = 5
else:
self.serial = 0
self.serialDevice = None
self.serialOptions = None
if flags.virtpconsole is not None:
if flags.virtpconsole.startswith("/dev/"):
con = flags.virtpconsole[5:]
else:
con = flags.virtpconsole
self.args.append("console=%s" %(con,))
class efiBootloaderInfo(bootloaderInfo):
def getBootloaderName(self):
return self._bootloader
bootloader = property(getBootloaderName, None, None, \
"name of the bootloader to install")
# XXX wouldn't it be nice to have a real interface to use efibootmgr from?
def removeOldEfiEntries(self, instRoot):
p = os.pipe()
rc = iutil.execWithRedirect('/usr/sbin/efibootmgr', [],
root = instRoot, stdout = p[1])
os.close(p[1])
if rc:
return rc
c = os.read(p[0], 1)
buf = c
while (c):
c = os.read(p[0], 1)
buf = buf + c
os.close(p[0])
lines = string.split(buf, '\n')
for line in lines:
fields = string.split(line)
if len(fields) < 2:
continue
if string.join(fields[1:], " ") == productName:
entry = fields[0][4:8]
rc = iutil.execWithRedirect('/usr/sbin/efibootmgr',
["-b", entry, "-B"],
root = instRoot,
stdout="/dev/tty5", stderr="/dev/tty5")
if rc:
return rc
return 0
def addNewEfiEntry(self, instRoot):
try:
bootdev = self.storage.mountpoints["/boot/efi"].name
except:
bootdev = "sda1"
link = "%s%s/%s" % (instRoot, "/etc/", self.configname)
if not os.access(link, os.R_OK):
os.symlink("../%s" % (self.configfile), link)
ind = len(bootdev)
try:
while (bootdev[ind-1] in string.digits):
ind = ind - 1
except IndexError:
ind = len(bootdev) - 1
bootdisk = bootdev[:ind]
bootpart = bootdev[ind:]
if (bootdisk.startswith('ida/') or bootdisk.startswith('cciss/') or
bootdisk.startswith('rd/') or bootdisk.startswith('sx8/')):
bootdisk = bootdisk[:-1]
argv = [ "/usr/sbin/efibootmgr", "-c" , "-w", "-L",
productName, "-d", "/dev/%s" % bootdisk,
"-p", bootpart, "-l", "\\EFI\\redhat\\" + self.bootloader ]
rc = iutil.execWithRedirect(argv[0], argv[1:], root = instRoot,
stdout = "/dev/tty5",
stderr = "/dev/tty5")
return rc
def installGrub(self, instRoot, bootDev, grubTarget, grubPath, cfPath):
if not iutil.isEfi():
raise EnvironmentError
rc = self.removeOldEfiEntries(instRoot)
if rc:
return rc
return self.addNewEfiEntry(instRoot)
def __init__(self, anaconda, initialize = True):
if initialize:
bootloaderInfo.__init__(self, anaconda)
else:
self.storage = anaconda.storage
if iutil.isEfi():
self._configdir = "/boot/efi/EFI/redhat"
self._configname = "grub.conf"
self._bootloader = "grub.efi"
self.useGrubVal = 1
self.kernelLocation = ""