python bindings api

Tim Potter tpot at
Thu May 22 23:31:17 GMT 2003

On Wed, May 21, 2003 at 05:48:11PM -0500, Brett A. Funderburg wrote:


> secdesc = cnn.query_secdesc(fnum)
> Which raises the error:
> prs_mem_get: reading data of size 2 would overrun buffer.
> Failed to parse secdesc
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> RuntimeError: query_secdesc failed

This looks like a problem in Samba's unmarshalling of security
descriptors.  I'd be interested in seeing a debug level 10 log of what
is happening here.  Add 'debug level = 10' to your smb.conf file to
get this.

>  - What are the valid values for FLAGS in the nt_create_andx api?

There are several places to look for this information.  The CIFS
technical reference document at:

or the source for Samba, or the source for ethereal.  I'm afraid the
protocol isn't terribly well documented.  Your best bet would be the
Samba code.

>  - Why does 'query_secdesc' fail with a RuntimeError?

Probably a bug in Samba.

>  - Am I using the api correctly; is this the correct order to call the
> api for querying the secdesc of a file?

I think your code above is correct.

> The example code doesn't help much in this regard.

As an historical note, the python smb module is more of an experiment that
anything particularly useful at the moment.  I was initially using it to
write some tests for a security descriptor project I was working on.
I've only implemented the bare minimum number of calls required to get
and set security descriptors on a file share.


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