samba - Mar 2006 - Execute script on file write

Hello,

I'm working on a quota system here at school. I want to execute a script 
everytime a user writes on the samba fileserver. This script checks some 
quota stuff.

My question is, is it possible that a script is executed everytime a user 
writes a file to the samba server and if it's possible, how?

Greetings,

Peter Fortuin

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Peter Fortuin wrote:
> Hello,
> 
> I'm working on a quota system here at school. I want to execute a
script
> everytime a user writes on the samba fileserver. This script checks some 
> quota stuff.
> 
> My question is, is it possible that a script is executed everytime a 
> user writes a file to the samba server and if it's possible, how?
I guess it would be rather hard to achieve this, as Samba doesn't offer 
anything like that.
The closest you will find are postexec and preexec directives (a program 
will be executed when the user connects/disconnects from a share).

Anyway, something what you're talking about (executing a script on every 
file write) could be a major bottleneck for the server.
Just imagine, how many files are in the average user profile...

Is there some special reason you have to execute a script after every 
file upload?


Why don't you just set up quota on your Samba server? The system will 
take care of everything.

Additionally, if you're using roaming profiles, you could use the Policy 
Editor to limit user profiles (they will get a pop up warning when they 
log out if the profile exceeds a value you set, and will be requested to 
remove some file).


-- 
Tomasz Chmielewski

Software deployment with Samba
http://wpkg.org

> -----Original Message-----
> From: samba-bounces+bob.gautier=rabobank.com@lists.samba.org 
> [mailto:samba-bounces+bob.gautier=rabobank.com@lists.samba.org
] On Behalf Of Peter Fortuin
> Sent: 14 March 2006 09:27
> To: samba@lists.samba.org
> Subject: [Samba] Execute script on file write
> 
> Hello,
> 
> I'm working on a quota system here at school. I want to 
> execute a script everytime a user writes on the samba 
> fileserver. This script checks some quota stuff.
> 
> My question is, is it possible that a script is executed 
> everytime a user writes a file to the samba server and if 
> it's possible, how?
As someone has already pointed out, the standard quota system might fit
your needs, and if not, you are probably looking at a high overhead on
your server -- especially if the logic is a 'script' (e.g. bash?).

If you really want to do it, my suggestion is that you consider writing
yourself a VFS plugin -- maybe the audit plugin would be a good starting
point.

Bob G
> 
> Greetings,
> 
> Peter Fortuin
> 
> _________________________________________________________________
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