The tarfile-module 0.8 shipped with Python-2.5 fails to handle archive-paths longer than 100 chars, in posix mode and GNU-mode.
AFAICS, the path-length limit should be 256 for posix-mode and infinite for GNU-mode.
The last tarfile module I know, being able to handle long paths is tarfile-0.7.4.
Attached you will find a test-script. The script prints the tarfile.version you are using to console and runs two tests, one for posix-mode up to path-length 256 and a second test for GNU-mode with pathlengths up to 1024.
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###Testoutput with Python-2.5
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> /usr/local/bin/python2.5 check-tarfile-module.py
Python Version: 2.5 (r25:51908, Dec 6 2006, 10:13:25)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-47)]
Executable: /home/frehberg/tmp/bin/python
Tarfile Version: 0.8.0
TarFile pathlength check failed, do not use!!
failed for tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/fooo (length 100, posix=True)
TarFile pathlength check failed, do not use!!
failed for tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/fooo (length 100, posix=False)
###
###Workarround for Python-2.5
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(Assuming you are using Linux and Python-2.5 has been installed with prefix /usr/local/)
Download tarfile-0.7.4 from http://www.gustaebel.de/lars/tarfile/ and run:
## remove original tarfile-module shipped with
## python2.5
rm -rf /usr/local/lib/python2.5/tarfile.py*
## install tarfile-0.7.4
tar -xvz -C /tmp/ -f /net/linux/pkg/python/tarfile-0.7.4.tar.gz
cd /tmp/tarfile-0.7.4/
/usr/local/bin/python2.5 setup.py install
###
###Testoutput with patched Python-2.5
###
> /usr/local/bin/python2.5 check-tarfile-module.py
Python Version: 2.5 (r25:51908, Dec 6 2006, 10:13:25)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-47)]
Executable: /usr/local/bin/python
Tarfile Version: 0.7.4
Tarfile module (posix=True) is Ok
Tarfile module (posix=False) is Ok
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