[Dazuko-help] Dazuko and Linux 2.6

[Michael Grigoriev]

Hi,

I've been considering using Dazuko to get file access/change notifications
in my network filesystem [http://www.luminal.org/wiki/index.php/FunFS].

Dazuko would allow me subscribe to notifications on an entire subtree in one
go instead of having to subscribe to every file, like FAM. It would also let
me block attempts to open files long enough for me to possibly get an oplock
on it, thus delaying access further giving the filesystem time for force any
client with outstanding write cache to flush it. In other words, it would be
really useful.

As I do most of my development on Linux 2.5/2.6, I started looking into
porting Dazuko to it. But here's the problem: it appears that sys_call_table
is no longer exported to the modules (starting with 2.5.41 I think).

Here's some related information I was able to find on LKML:
[http://lists.insecure.org/lists/linux-kernel/2003/May/0788.html]

> It's unexported because there is no correct use for it and that it can't
> be used correctly either. Tell me which lock your module uses to protect
> modifications to it? Tell me how you handle other modules trying to
> overload the same syscall and those modules loading before your module but
> then unloading while yours is still loaded?
>
> It's the wrong mechanism to do ANYTHING. Really.

So I was wondering if you've looked at 2.6 support at all, and if you had
any ideas about how to do it.

Thanks in advance.

-- 
Have fun,
Michael "mag" Grigoriev
address@hidden                        Every time I close my eyes
http://www.luminal.org              The noise inside me amplifies

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