148 lines
5.3 KiB
Python
Executable File
148 lines
5.3 KiB
Python
Executable File
#! /usr/bin/env python
|
|
|
|
# Copyright (c) 2015, The Linux Foundation. All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# * Neither the name of The Linux Foundation nor
|
|
# the names of its contributors may be used to endorse or promote
|
|
# products derived from this software without specific prior written
|
|
# permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
"""
|
|
Android kernel configuration validator.
|
|
|
|
The Android kernel reference trees contain some config stubs of
|
|
configuration options that are required for Android to function
|
|
correctly, and additional ones that are recommended.
|
|
|
|
This script can help compare these base configs with the ".config"
|
|
output of the compiler to determine if the proper configs are defined.
|
|
"""
|
|
|
|
from collections import namedtuple
|
|
from optparse import OptionParser
|
|
import re
|
|
import sys
|
|
|
|
version = "check-config.py, version 0.0.1"
|
|
|
|
req_re = re.compile(r'''^CONFIG_(.*)=(.*)$''')
|
|
forb_re = re.compile(r'''^# CONFIG_(.*) is not set$''')
|
|
comment_re = re.compile(r'''^(#.*|)$''')
|
|
|
|
Enabled = namedtuple('Enabled', ['name', 'value'])
|
|
Disabled = namedtuple('Disabled', ['name'])
|
|
|
|
def walk_config(name):
|
|
with open(name, 'r') as fd:
|
|
for line in fd:
|
|
line = line.rstrip()
|
|
m = req_re.match(line)
|
|
if m:
|
|
yield Enabled(m.group(1), m.group(2))
|
|
continue
|
|
|
|
m = forb_re.match(line)
|
|
if m:
|
|
yield Disabled(m.group(1))
|
|
continue
|
|
|
|
m = comment_re.match(line)
|
|
if m:
|
|
continue
|
|
|
|
print "WARNING: Unknown .config line: ", line
|
|
|
|
class Checker():
|
|
def __init__(self):
|
|
self.required = {}
|
|
self.exempted = set()
|
|
self.forbidden = set()
|
|
|
|
def add_required(self, fname):
|
|
for ent in walk_config(fname):
|
|
if type(ent) is Enabled:
|
|
self.required[ent.name] = ent.value
|
|
elif type(ent) is Disabled:
|
|
if ent.name in self.required:
|
|
del self.required[ent.name]
|
|
self.forbidden.add(ent.name)
|
|
|
|
def add_exempted(self, fname):
|
|
with open(fname, 'r') as fd:
|
|
for line in fd:
|
|
line = line.rstrip()
|
|
self.exempted.add(line)
|
|
|
|
def check(self, path):
|
|
failure = False
|
|
|
|
# Don't run this for mdm targets
|
|
if re.search('mdm', path):
|
|
print "Not applicable to mdm targets... bypassing"
|
|
else:
|
|
for ent in walk_config(path):
|
|
# Go to the next iteration if this config is exempt
|
|
if ent.name in self.exempted:
|
|
continue
|
|
|
|
if type(ent) is Enabled:
|
|
if ent.name in self.forbidden:
|
|
print "error: Config should not be present: %s" %ent.name
|
|
failure = True
|
|
|
|
if ent.name in self.required and ent.value != self.required[ent.name]:
|
|
print "error: Config has wrong value: %s %s expecting: %s" \
|
|
%(ent.name, ent.value, self.required[ent.name])
|
|
failure = True
|
|
|
|
elif type(ent) is Disabled:
|
|
if ent.name in self.required:
|
|
print "error: Config should be present, but is disabled: %s" %ent.name
|
|
failure = True
|
|
|
|
if failure:
|
|
sys.exit(1)
|
|
|
|
def main():
|
|
usage = """%prog [options] path/to/.config"""
|
|
parser = OptionParser(usage=usage, version=version)
|
|
parser.add_option('-r', '--required', dest="required",
|
|
action="append")
|
|
parser.add_option('-e', '--exempted', dest="exempted",
|
|
action="append")
|
|
(options, args) = parser.parse_args()
|
|
if len(args) != 1:
|
|
parser.error("Expecting a single path argument to .config")
|
|
elif options.required is None or options.exempted is None:
|
|
parser.error("Expecting a file containing required configurations")
|
|
|
|
ch = Checker()
|
|
for r in options.required:
|
|
ch.add_required(r)
|
|
for e in options.exempted:
|
|
ch.add_exempted(e)
|
|
|
|
ch.check(args[0])
|
|
|
|
if __name__ == '__main__':
|
|
main()
|