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Re: File integrity

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Re: File integrity

Subject: Re: File integrity
From: Keith Duncan <email@hidden>
Date: Thu, 22 May 2008 11:57:04 +0100

is there a way to tell if my executable was launched by/attached to some other process?

You can use ptrace(2) with the PT_DENY_ATTACH request to prevent anyone from attaching and will kill the process if it is already being traced.

See http://steike.com/code/debugging-itunes-with-gdb/

This has been worked around using a simple kernel extension, I don't know what the current state of it is but it may not be that reliable.

file integrity

You can also use codesign(1) which will alert the user if your binary has been tampered with since the signing. Note that it doesn't prevent the user from launching your application and the functions for determining the integrity of your executable aren't public.

Keith
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