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