linux-kernel - Re: Intercepting system calls

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Message-ID: <20211.28256.111279.27933@quad.stoffel.home>
Date:	Thu, 22 Dec 2011 12:52:32 -0500
From:	"John Stoffel" <john@...ffel.org>
To:	Gaurav Saxena <grvsaxena419@...il.com>
Cc:	richard -rw- weinberger <richard.weinberger@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Intercepting system calls

>>>>> "Gaurav" == Gaurav Saxena <grvsaxena419@...il.com> writes:

>> Intercepting system calls is very bad, don't do it.

Gaurav> Oh. I will not do it then, could you suggest me something so
Gaurav> that I could prevent unlink on some file say using kernel
Gaurav> support. I want to save file on unlink how could I do that
Gaurav> without kernel support, or how could I do that using a kernel
Gaurav> module.

Write a FUSE module to mount the filesystem through, inside your FUSE
module you can intercept the unlink/truncate/write calls and decide
what you want to have happen.

John
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