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kconfig: kconfiglib.py: Backup files only #101

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kconfig: kconfiglib.py: Backup files only #101

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Commits on Jan 27, 2021

  1. kconfig: kconfiglib.py: Backup files only 

    The _save_old() to return early if <filename> is not file (or symlink
to a file).

This is simplest alternative to avoid attempt to rename /dev/null
(which could succeed).

This also keeps fifos (perhaps nonexistent potential usage but
this is nicer).

If <filename> were directory or socket, after shutil.copyfile(),
writing to the file (by caller, _write_config()), would fail.

Co-authored-by: Marti Bolivar <[email protected]>
Signed-off-by: Tomi Ollila <[email protected]>
    @mbolivar-nordic
    Tomi Ollila and mbolivar-nordic committed Jan 27, 2021
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