Hi Stefan,

On Fri, Feb 11 2022 at 17:35 +0100, "Stefan Herbrechtsmeier" 
<[email protected]> wrote:
> Am 11.02.2022 um 17:17 schrieb Ulrich Ölmann:
>> On Thu, Feb 10 2022 at 17:17 +0100, "Stefan Herbrechtsmeier" 
>> <[email protected]> wrote:
>>> From: Stefan Herbrechtsmeier <[email protected]>
>>>
>>> Add support for packed images to wic rawcopy handler do minimize disk
>>> usage in deploy directory and reuse of packed images between wic and
>>> swupdate. Add `unpack` to sourceparams to unpack an bz2, gz and xz
>>> archives.
>>>
>>> Example:
>>> part / --source rawcopy 
>>> --sourceparams="file=core-image-minimal-qemu.ext4.gz,unpack"
>>>
>>> Signed-off-by: Stefan Herbrechtsmeier 
>>> <[email protected]>
>>>
>>> ---
>>>
>>>   scripts/lib/wic/plugins/source/rawcopy.py | 28 ++++++++++++++++++++++-
>>>   1 file changed, 27 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/scripts/lib/wic/plugins/source/rawcopy.py 
>>> b/scripts/lib/wic/plugins/source/rawcopy.py
>>> index fa7b1eb8ac..7816e00e49 100644
>>> --- a/scripts/lib/wic/plugins/source/rawcopy.py
>>> +++ b/scripts/lib/wic/plugins/source/rawcopy.py
>>> @@ -4,6 +4,8 @@
>>>     import logging
>>>   import os
>>> +import signal
>>> +import subprocess
>>>     from wic import WicError
>>>   from wic.pluginbase import SourcePlugin
>>> @@ -38,6 +40,24 @@ class RawCopyPlugin(SourcePlugin):
>>>             exec_cmd(cmd)
>>>   +    @staticmethod
>>> +    def do_image_uncompression(src, dst, workdir):
>>> +        def subprocess_setup():
>>> +            # Python installs a SIGPIPE handler by default. This is 
>>> usually not what
>>> +            # non-Python subprocesses expect.
>>> +            # SIGPIPE errors are known issues with gzip/bash
>>> +            signal.signal(signal.SIGPIPE, signal.SIG_DFL)
>>> +
>>> +        decompressor = {
>>> +            ".bz2": "bzip2",
>>> +            ".gz": "gzip",
>>> +            ".xz": "xz"
>>> +        }.get(os.path.splitext(src)[1])
>>> +        if not decompressor:
>>> +            raise WicError("Compression not support")
>> Here is a small typo: s/support/supported/ .
>> And what about substituting "Compression" by "Compressor" to express
>> that not compression in general but only this individual compressor is
>> currently unsupported? (Or even better: in addition explicitely name the
>> currently unsupported compressor in the error message?)
>
> What about the following:
>
> Not supported compressor extension: %s

of course, that also sounds like a good alternative.

Have a nice weekend!
Ulrich


> Best regards
>   Stefan
-- 
Pengutronix e.K.                           | Ulrich Ölmann               |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
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