Date: Thu, 15 Jan 1998 22:52:33 -0500 (EST) From: Alex Boisvert <alex@gel.usherb.ca> To: freebsd-hackers@FreeBSD.ORG Subject: procfs: intercept calls? Message-ID: <Pine.BSF.3.95q.980115224236.11844A-100000@teel.info-noire.com>
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I've just read in a USENIX abstract that it's possible "to intercept specific system calls" with the /proc filesystem, and service the call with a user-level program. Is this feasible on FreeBSD? I've just read the procfs man page a few times and can't see any mention about this. I suppose that one doesn't manually overwrite the process' text segment where the syscalls are made... Maybe it's source-code documented? ;-) Alex.
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