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|
#
# milo.py - MILO and aboot configuration and installation
#
# Matt Wilson <msw@redhat.com>
#
# Copyright 2001 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.
#
# XXX reimplement
#from lilo import LiloConfiguration
import iutil
import isys
import string
import os
import rpm
def onMILO ():
try:
f = open ('/proc/cpuinfo', 'r')
except:
return
lines = f.readlines ()
serial = ""
for line in lines:
if string.find (line, "system serial number") >= 0:
serial = string.strip (string.split (line, ':')[1])
if serial and len (serial) >= 4 and serial[0:4] == "MILO":
return 1
else:
return 0
def partitionNum (path):
i = len(path) - 1
while path[i] in string.digits:
i = i - 1
return string.atoi (path[i + 1:])
def wholeDevice (path):
i = len(path) - 1
while path[i] in string.digits:
i = i - 1
extra = 1
if string.find(path, "rd/") >= 0:
extra = 0
return path[:i + extra]
class MiloInstall:
def __init__ (self, todo):
self.initrdsMade = {}
self.todo = todo
def makeInitrd (self, kernelTag, instRoot):
initrd = "initrd%s.img" % (kernelTag, )
if not self.initrdsMade.has_key(initrd):
iutil.execWithRedirect("/sbin/mkinitrd",
("/sbin/mkinitrd",
"--ifneeded",
"/boot/" + initrd,
kernelTag[1:]),
stdout = None, stderr = None, searchPath = 1,
root = instRoot)
self.initrdsMade[kernelTag] = 1
return initrd
def writeAboot (self):
bootDevice = self.todo.fstab.getBootDevice ()
rootDevice = self.todo.fstab.getRootDevice ()[0]
if bootDevice != rootDevice:
confprefix = self.todo.instPath + "/boot/etc"
kernelprefix = '/'
try:
os.mkdir (confprefix)
except:
pass
# XXX stat /etc/aboot.conf and do the right thing
try:
os.remove(self.todo.instPath + "/etc/aboot.conf")
except OSError:
pass
os.symlink("../boot/etc/aboot.conf",
self.todo.instPath + "/etc/aboot.conf")
else:
confprefix = self.todo.instPath + "/etc"
kernelprefix = '/boot/'
partition = partitionNum (bootDevice)
abootdev = wholeDevice (bootDevice)
if os.access (confprefix + "/aboot.conf", os.R_OK):
os.rename (confprefix + "/aboot.conf",
confprefix + "/aboot.conf.rpmsave")
f = open (confprefix + "/aboot.conf", 'w')
f.write ("# aboot default configurations\n")
if bootDevice != rootDevice:
f.write ("# NOTICE: You have a /boot partition. This means that\n")
f.write ("# all kernel paths are relative to /boot/\n")
lines = 0
kernelList = []
hdList = self.todo.hdList
upgrade = self.todo.upgrade
smpInstalled = (hdList.has_key('kernel-smp') and
hdList['kernel-smp'].selected)
# This is a bit odd, but old versions of Red Hat could install
# SMP kernels on UP systems, but (properly) configure the UP version.
# We don't want to undo that, but we do want folks using this install
# to be able to override the kernel to use during installs. This rule
# seems to nail this.
if (upgrade and not isys.smpAvailable()):
smpInstalled = 0
if (isys.smpAvailable() and hdList.has_key('kernel-enterprise') and
hdList['kernel-enterprise'].selected):
kernelList.append((hdList['kernel-enterprise'], "enterprise"))
if (smpInstalled):
kernelList.append((hdList['kernel-smp'], "smp"))
kernelList.append((hdList['kernel'], ""))
for (kernel, tag) in kernelList:
kernelTag = "-%s-%s%s" % (kernel[rpm.RPMTAG_VERSION],
kernel[rpm.RPMTAG_RELEASE], tag)
kernelFile = "vmlinuz" + kernelTag
initrd = self.makeInitrd (kernelTag, self.todo.instPath)
extra=""
if os.access (self.todo.instPath + "/boot/" + initrd, os.R_OK):
extra=" initrd=%s%s" % (kernelprefix, initrd)
f.write ("%d:%d%s%s root=/dev/%s%s\n" %
(lines, partition, kernelprefix,
kernelFile, rootDevice, extra))
lines = lines + 1
f.close ()
args = ("swriteboot", ("/dev/%s" % abootdev), "/boot/bootlx")
iutil.execWithRedirect('/sbin/swriteboot',
args,
stdout = None,
root = self.todo.instPath)
args = ("abootconf", ("/dev/%s" % abootdev), str (partition))
iutil.execWithRedirect('/sbin/abootconf',
args,
stdout = None,
root = self.todo.instPath)
def writeMilo (self):
bootDevice = self.todo.fstab.getBootDevice ()
rootDevice = self.todo.fstab.getRootDevice ()[0]
if bootDevice != rootDevice:
hasboot = 1
kernelroot = '/'
try:
os.remove(self.todo.instPath + "/etc/milo.conf")
except OSError:
pass
os.symlink("../boot/milo.conf",
self.todo.instPath + "/etc/milo.conf")
if os.access (self.todo.instPath + "/boot/milo.conf", os.R_OK):
os.rename (self.todo.instPath + "/boot/milo.conf",
self.todo.instPath + "/boot/milo.conf.rpmsave")
else:
hasboot = 0
kernelroot = '/boot/'
if os.access (self.todo.instPath + "/etc/milo.conf", os.R_OK):
os.rename (self.todo.instPath + "/etc/milo.conf",
self.todo.instPath + "/etc/milo.conf.rpmsave")
f = open (self.todo.instPath + "/etc/milo.conf", "w")
if hasboot:
f.write ("# NOTICE: You have a /boot partition. This means that all\n")
f.write ("# paths are relative to /boot/\n")
kernels = []
for package, tag in (('kernel-smp', 'smp'), ('kernel', '')):
if (self.todo.hdList.has_key(package) and
self.todo.hdList[package].selected):
kernel = self.todo.hdList[package]
version = "%s-%s" % (kernel[rpm.RPMTAG_VERSION],
kernel[rpm.RPMTAG_RELEASE])
# if this is UP and we have a kernel (the smp kernel),
# then call it linux-up
if not tag and kernels:
kernels.append ((version, "linux-up"))
else:
kernels.append ((version, "linux"))
for version, label in kernels:
f.write ("image=%svmlinuz-%s\n" % (kernelroot, version))
f.write ("\tlabel=%s\n" % label)
f.write ("\troot=/dev/%s\n" % rootDevice)
f.close()
def write (self):
if onMILO ():
self.writeMilo ()
else:
self.writeAboot ()
|
