| # Copyright 2018 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Copies a FVM file and extends it by a specified amount. |
| |
| Arg #1: path to 'fvm'. |
| #2: the path to the source fvm.blk. |
| #3: the path that the extended FVM file will be written to. |
| #4: the additional number of bytes to grow fvm.blk by.""" |
| |
| import os |
| import shutil |
| import subprocess |
| import sys |
| |
| def ExtendFVM(fvm_tool_path, src_path, dest_path, delta): |
| old_size = os.path.getsize(src_path) |
| new_size = old_size + int(delta) |
| shutil.copyfile(src_path, dest_path) |
| subprocess.check_call([fvm_tool_path, dest_path, 'extend', '--length', |
| str(new_size)]) |
| return 0 |
| |
| if __name__ == '__main__': |
| sys.exit(ExtendFVM(*sys.argv[1:])) |
