Gentoo Archives: gentoo-dev

From: christoph@×××××××.com
To: "Ardern, Steve" <Steve.Ardern@××××××××××.com>
Cc: "'gentoo-dev@g.o'" <gentoo-dev@g.o>
Subject: Re: [gentoo-dev] Quick question
Date: Tue, 23 Jul 2002 11:16:58
In Reply to: [gentoo-dev] Quick question by "Ardern
1 You can do this by preloading a library that intercepts these calls to
2 the c library. Set LD_PRELOAD to that library name. fakeroot (debian
3 package) does that to generate a virtual root environment.
5 If you want to do this the right way then you need to implement a
6 filesystem in the kernel..;-) There are tools that forward fs requests to
7 userland. Those might help you to get going fast.
9 On Tue, 23 Jul 2002, Ardern, Steve wrote:
11 > I realise that this is very probably the wrong place to send this quick
12 > question, but it's been really bugging me and I am well and truly stuck.
13 >
14 > I want to be able to intercept any kernel level calls to a mounted
15 > filesystem - such that anytime a read/write action occurs my application is
16 > made aware of it. For example, I mount a loopback device on /mnt/loopback -
17 > and I want to be able to examine, modify, restrict all access made to this
18 > as my application sees fit.