From owner-freebsd-questions Mon Feb 22 13:12:21 1999 Delivered-To: freebsd-questions@freebsd.org Received: from kiwi.pinnacle.co.nz (pinsoft.internet.co.nz [202.37.141.181]) by hub.freebsd.org (Postfix) with ESMTP id A457A11D2C for ; Mon, 22 Feb 1999 13:12:16 -0800 (PST) (envelope-from jonc@pinnacle.co.nz) Received: from kiwi.pinnacle.co.nz (kiwi.pinnacle.co.nz [202.37.163.2]) by kiwi.pinnacle.co.nz (8.8.8/8.8.8) with ESMTP id KAA23979; Tue, 23 Feb 1999 10:09:33 +1300 (NZDT) Date: Tue, 23 Feb 1999 10:09:33 +1300 (NZDT) From: Jonathan Chen To: Gustavo Vieira G C Rios Cc: freebsd-questions@FreeBSD.ORG Subject: Re: assembly In-Reply-To: <36D1BAB6.BB3F8701@netshell.vicosa.com.br> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG 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 --------------------------------------------------------------------- Who dares nothing, need hope for nothing To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message