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#
# lilo.py: LILO config file class
#
# Erik Troan <ewt@redhat.com>
# Matt Wilson <msw@redhat.com>
# Adrian Likins <alikins@redhat.com>
#
# Copyright 1999-2001 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.
#
import string
import os
from UserDict import UserDict
class UserDictCase(UserDict):
"""A dictionary with case insensitive keys"""
def __init__(self, data = {}):
UserDict.__init__(self)
# if we are passed a dictionary transfer it over...
for k in data.keys():
kl = string.lower(k)
self.data[kl] = data[k]
# some methods used to make the class work as a dictionary
def __setitem__(self, key, value):
key = string.lower(key)
self.data[key] = value
def __getitem__(self, key):
key = string.lower(key)
if not self.data.has_key(key):
return None
return self.data[key]
get = __getitem__
def __delitem__(self, key):
key = string.lower(key)
del self.data[key]
def has_key(self, key):
key = string.lower(key)
return self.data.has_key(key)
# return this data as a real hash
def get_hash(self):
return self.data
# return the data for marshalling
def __getstate__(self):
return self.data
# we need a setstate because of the __getstate__ presence screws up deepcopy
def __setstate__(self, state):
self.__init__(state)
# get a dictionary out of this instance ({}.update doesn't get instances)
def dict(self):
return self.data
def needsEnterpriseKernel():
rc = 0
try:
f = open("/proc/e820info", "r")
except IOError:
return 0
for l in f.readlines():
l = string.split(l)
if l[3] == '(reserved)': continue
regionEnd = (string.atol(l[0], 16) - 1) + string.atol(l[2], 16)
if regionEnd > 0xffffffffL:
rc = 1
return rc
class LiloConfigFile:
def __repr__ (self, tab = 0):
s = ""
for n in self.order:
if (tab):
s = s + '\t'
if n[0] == '#':
s = s + n[1:]
else:
s = s + n
if self.items[n]:
s = s + "=" + self.items[n]
s = s + '\n'
for cl in self.images:
s = s + "\n%s=%s\n" % (cl.imageType, cl.path)
s = s + cl.__repr__(1)
return s
def addEntry(self, item, val = None, replace = 1):
if not self.items.has_key(item):
self.order.append(item)
elif not replace:
return
if (val):
self.items[item] = str(val)
else:
self.items[item] = None
def getEntry(self, item):
if self.items.has_key(item):
return self.items[item]
else:
return None
def delEntry(self, item):
newOrder = []
for i in self.order:
if item != i: newOrder.append(i)
self.order = newOrder
del self.items[item]
def testEntry(self, item):
if self.items.has_key(item):
return 1
else:
return 0
def getImage(self, label):
for config in self.images:
if string.lower(config.getEntry('label')) == string.lower(label):
return (config.imageType, config)
if config.getEntry('alias'):
if string.lower(config.getEntry('alias')) == string.lower(label):
return (config.imageType, config)
raise IndexError, "unknown image %s" % (label)
def addImage (self, config):
# make sure the config has a valid label
config.getEntry('label')
if not config.path or not config.imageType:
raise ValueError, "subconfig missing path or image type"
self.images.append(config)
def delImage (self, label):
for config in self.images:
if string.lower(config.getEntry('label')) == string.lower(label):
self.images.remove (config)
return
raise IndexError, "unknown image %s" % (label,)
def listImages (self):
l = []
for config in self.images:
l.append(config.getEntry('label'))
return l
def getPath (self):
return self.path
def write(self, file, perms = 0644):
f = open(file, "w")
f.write(self.__repr__())
f.close()
os.chmod(file, perms)
def read (self, file):
f = open(file, "r")
image = None
for l in f.readlines():
l = l[:-1]
orig = l
while (l and (l[0] == ' ' or l[0] == '\t')):
l = l[1:]
if not l:
continue
if l[0] == '#':
self.order.append('#' + orig)
continue
fields = string.split(l, '=', 1)
if (len(fields) == 2):
f0 = string.strip (fields [0])
f1 = string.strip (fields [1])
if (f0 == "image" or f0 == "other"):
if image: self.addImage(image)
image = LiloConfigFile(imageType = f0,
path = f1)
args = None
else:
args = (f0, f1)
else:
args = (string.strip (l),)
if (args and image):
apply(image.addEntry, args)
elif args:
apply(self.addEntry, args)
if image: self.addImage(image)
f.close()
def __init__(self, imageType = None, path = None):
self.imageType = imageType
self.path = path
self.order = []
self.images = []
self.items = UserDictCase()
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