Module compression in Slitaz

genko · 2012-02-07 17:23:26

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?

bellard · 2012-02-07 17:36:06

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

genko · 2012-02-07 18:16:27

Thank you Pascal.....how can you go about uncompressing the whole /lib/modules/ sudirectories

in one shot? how do you do it recursively?

Trixar_za · 2012-02-07 18:40:30

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

genko · 2012-02-07 19:13:11

@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.

Trixar_za · 2012-02-07 19:28:49

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)

genko · 2012-02-07 23:17:03

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...

bellard · 2012-02-08 09:05:35

# 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

genko · 2012-02-08 11:51:10

Thank you so very much, Pascal! smile

And can you also give the command for recompressing them back to their original form recursively?

This is very much appreciated.

Trixar_za · 2012-02-08 13:35:03

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

bellard · 2012-02-08 14:21:50

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

genko · 2012-02-08 16:18:04

Thank you! This is excellent! smile smile smile

SliTaz Forum

SliTaz Forum

#1 2012-02-07 17:23:26

Module compression in Slitaz

#2 2012-02-07 17:36:06

Re: Module compression in Slitaz

#3 2012-02-07 18:16:27

Re: Module compression in Slitaz

#4 2012-02-07 18:40:30

Re: Module compression in Slitaz

#5 2012-02-07 19:13:11

Re: Module compression in Slitaz

#6 2012-02-07 19:28:49

Re: Module compression in Slitaz

#7 2012-02-07 23:17:03

Re: Module compression in Slitaz

#8 2012-02-08 09:05:35

Re: Module compression in Slitaz

#9 2012-02-08 11:51:10

Re: Module compression in Slitaz

#10 2012-02-08 13:35:03

Re: Module compression in Slitaz

#11 2012-02-08 14:21:50

Re: Module compression in Slitaz

#12 2012-02-08 16:18:04

Re: Module compression in Slitaz

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