unsquashfs: add support for LZMA magics

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#20 unsquashfs: add support for LZMA magics

Status: open

Owner: nobody

Labels: None

Priority: 5

Updated: 2015-01-23

Created: 2012-09-19

Creator: Antonio Ospite

Private: No

Some vendor (e.g. Thomson/Technicolor) use a different super block magic
to indicate LZMA compression:

qshs (0x71736873) - LZMA compression
shsq (0x73687371) - LZMA compression, SWAPPED fields

Add support for detecting this and enable extraction for filesystems
from those firmwares.

If the patch is OK, it can be applied with git-am.

Thanks,
Antonio

Discussion

Antonio Ospite - 2012-09-19

unsquashfs: add support for LZMA magics

0001-unsquashfs-add-support-for-LZMA-magics.patch

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Antonio Ospite - 2013-03-19

Ping.

In a router using such filesystems with swapped bytes I can see this message in the kernel logs:

squashfs: version 4.0 (2009/01/31) Phillip Lougher
squashfs: version 4.0 with LZMA457 ported by BRCM

I don't know if this info can be useful to choose a bettere name for the feature.

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Antonio Ospite - 2014-06-30

Hi, any news on this issue?

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At1ant - 2015-01-23

0001-unsquashfs-add-support-for-LZMA-magics.patch - This patch for what versions of squashfs tools ?

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- Antonio Ospite - 2015-01-23
  
  The patch still applies to squashfs-tool 4.3
  
  It may require some touches but it's a good starting point IMHO.
  
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