Date: Tue, 23 Feb 1999 10:09:33 +1300 (NZDT) From: Jonathan Chen <jonc@pinnacle.co.nz> To: Gustavo Vieira G C Rios <grios@netshell.vicosa.com.br> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: assembly Message-ID: <Pine.SC5.4.10.9902231009030.23143-100000@kiwi.pinnacle.co.nz> In-Reply-To: <36D1BAB6.BB3F8701@netshell.vicosa.com.br>
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On Mon, 22 Feb 1999, Gustavo Vieira G C Rios wrote:
> I don't believe (i am sorry if i am wrong, but i am a beginner)!
> If i use assembly i do not need to read a file via read API, i can
> access the HD directly, without to check for access permissions, right ?
> If so, i can hack a UNIX system (no matter which) using assembly!
>
> Am i wrong ?
Yes. You are wrong. You're thinking about DOS, where you have total
control over everything. In a real multiuser O/S (UNIX, NT, et al),
you run at a lower privilege, and you can't access anything except via
the O/S.
--
Jonathan Chen
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