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#!/usr/bin/env python3
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import argparse
import re
import os
import sys
import glob
def load_config(path):
with open(path, 'r') as f:
config = f.read()
targets = re.findall(r'(.*)=(?:y|m)', config)
return targets
def find_subdirs(config, path):
try:
with open(os.path.join(path, 'Makefile'), 'r') as f:
makefile = f.read()
except OSError:
# No Makefile
return []
dir_stmts = re.findall(r'obj-\$\((.*)\)\s+\+=\s+(.*)(?:\n|$)', makefile)
subdirs = []
for ds in dir_stmts:
if args.debug:
print("Processing make targets from {0} ({1})".format(ds[1], ds[0]), file=sys.stderr)
if ds[0] in config:
dirname = os.path.dirname(ds[1])
if dirname:
subdirs.append(dirname)
elif args.debug:
print("{0} is disabled in the config, ignoring {1}".format(ds[0], ds[1]), file=sys.stderr)
return subdirs
def find_firmware(file):
with open(file, 'r') as f:
source = f.read()
fws = re.findall(r'MODULE_FIRMWARE\((.*)\)', source)
return fws
def walk_dir(config, path):
subdirs = find_subdirs(config, path)
if args.debug:
print("Looking for C files in {0}".format(path), file=sys.stderr)
c_files = glob.glob("{0}/*.c".format(path))
for cf in c_files:
fws = find_firmware(cf)
if fws:
print(cf)
if args.debug:
print("Referenced firmware: {0}".format(fws))
for d in subdirs:
d = os.path.join(path, d)
walk_dir(config, d)
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument("-s", "--source-dir", action="append", help="Kernel source directory")
parser.add_argument("-k", "--kernel-dir", action="store", help="Kernel source directory")
parser.add_argument("-c", "--kernel-config", action="store", help="Kernel configuration")
parser.add_argument("-d", "--debug", action="store_true", help="Enable Debug output")
args = parser.parse_args()
if args.source_dir and args.kernel_dir and args.kernel_config:
config = load_config(args.kernel_config)
cwd = os.getcwd()
os.chdir(f'{cwd}/{args.kernel_dir}')
for directory in args.source_dir:
walk_dir(config, directory)
else:
parser.print_help()
sys.exit(1)
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