full-disclosure - Re: About the inotify Mechanism in LINUX

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Date: Wed, 7 Jul 2010 14:34:24 +0200
From: Gregory Bellier <gregory.bellier@...il.com>
To: Valdis.Kletnieks@...edu
Cc: Full-Disclosure@...ts.grok.org.uk
Subject: Re: About the inotify Mechanism in LINUX

inotify is pretty much limited. I have great hopes in fanotify but I don't
see much informations about it in the wild.



2010/7/7 <Valdis.Kletnieks@...edu>

> On Wed, 07 Jul 2010 15:42:08 +0800, supercodeing35271 supercodeing35271
> said:
> > I am now thinking on monitor the filesystem in linux, for this reason
> > the inotify is a good way.But the problem is that what i want to do is
> > not only monitor but a handle.This situation is like that a file in
> > system has been changed unusually,now the inotity could tell me this
> > but i want to intercept the change before the file been changed.
> > So does anyone could give me a help on HOWTO?
>
> Eric Paris's fanotify patches look likely to make an appearance in the
> 2.6.36
> kernel:
>
> config FANOTIFY
>        bool "Filesystem wide access notification"
>        select FSNOTIFY
>        select ANON_INODES
>        default y
>        ---help---
>           Say Y here to enable fanotify suport.  fanotify is a file access
>           notification system which differs from inotify in that it sends
>           and open file descriptor to the userspace listener along with
>           the event.
>
>           If unsure, say Y.
>
> config FANOTIFY_ACCESS_PERMISSIONS
>        bool "fanotify permissions checking"
>        depends on FANOTIFY
>        depends on SECURITY
>        default n
>        ---help---
>           Say Y here is you want fanotify listeners to be able to make
> permissions
>           decisions concerning filesystem events.  This is used by some
> fanotify
>           listeners which need to scan files before allowing the system
> access to
>           use those files.  This is used by some anti-malware vendors and
> by some
>           hierarchical storage managent systems.
>
>           If unsure, say N.
>
> Is that what you're looking for?
>
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