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Module compression in Slitaz

(12 posts) (3 voices)

• Started 13 years ago by genko
• Latest reply from genko
• This topic is resolved

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1. 

   genko
   

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   How can the /lib/modules Slitaz kernel modules be uncompressed?
   They are definitely not gzipped and unlzma doesn't seem to work,
   so how do I uncompress them?

   Posted 13 years ago #
2. 

   Bellard
   

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   # busybox unlzma -c /pathto/module.ko.gz > module.ko

   Posted 13 years ago #
3. 

   genko
   

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   Thank you Pascal.....how can you go about uncompressing the whole /lib/modules/ sudirectories
   in one shot? how do you do it recursively?

   Posted 13 years ago #
4. 

   Trixar_za
   

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   And the purpose behind this is...? They work perfectly fine with modprobe compressed.

   Posted 13 years ago #
5. 

   genko
   

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   @Trixar-za

   I'm experimenting with linux live scripts creating a system that lives on aufs compressed by squashfs, which is why I need to uncompress these modules. I have just a few left in there anyway, as I'm customizing my slitaz specifically for my system only. There is usually a good reason for doing things, T..., try to keep an open mind.

   Posted 13 years ago #
6. 

   Trixar_za
   

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   Not that you'll get a better compression except with xz, but you could try reverse engineering this:
   http://murga-linux.com/puppy/viewtopic.php?t=63971&sid=c6eb885e3cb7b2452e6df437b9b85acf

   Since my find-fu isn't that good I can't help you generate the right one for it (could probably be done with sed or a perl script too)

   Posted 13 years ago #
7. 

   genko
   

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   Thanks....interesting thread.
   I've tried renaming them all to *.ko.lzma with the intention of later using unlzma on them recursively with:

   find /path/to/lib/modules/2.6.30.6-slitaz/kernel -type f -name '*.gz' -print0 | xargs -0 rename 's/.gz$/.lzma/'

   (all in one line, one command)

   to no avail....the command seems to work without error but nothing happens to the file extensions...
   heck, not even a direct 'mv module.ko.gz module.ko.lzma' works there.....(why is that?)

   I guess we'll have to wait for Pascal....he knows....I'm not in a rush with this anyway...

   Posted 13 years ago #
8. 

   Bellard
   

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   # find /path/to/lib/modules/2.6.30.6-slitaz/kernel -type f -name '*.ko.gz' | while read m; do busybox unlzma -c $m > ${m%.gz} && rm -f $m; done; depmod -a -b /path/to

   Posted 13 years ago #
9. 

   genko
   

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   Thank you so very much, Pascal! :)
   And can you also give the command for recompressing them back to their original form recursively?
   This is very much appreciated.

   Posted 13 years ago #
10. 

    Trixar_za
    

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    Why not just use the script in the puppy linux thread?

    Posted 13 years ago #
11. 

    Bellard
    

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    http://hg.slitaz.org/wok/raw-file/f7460b4117e7/linux/stuff/gztazmod.sh

    Posted 13 years ago #
12. 

    genko
    

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    Thank you! This is excellent! :) :) :)

    Posted 13 years ago #

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