Messages in this thread | ![/](/images/icornerl.gif) | | From | "H. Peter Anvin" <> | Subject | Re: The disappearing sys_call_table export. | Date | 14 May 2003 14:08:02 -0700 |
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Followup to: <MDEHLPKNGKAHNMBLJOLKEEFFCOAA.davids@webmaster.com> By author: "David Schwartz" <davids@webmaster.com> In newsgroup: linux.dev.kernel > > I pointed out to them that any software mechanism I devised for shutting > the system down would require that they had control over the system in order > to invoke the mechanism. > > They thought about that for a moment and were about to find that the system > did not meet the requirements. I pointed out that anyone could pull the plug > or network cable if needed or shut the system down at the switch and that > this could be accomplished even if they lost control over the system and > would certainly stop it from sending any information. They then agreed that > the system met that requirement. >
"Sometimes it's possible to do in hardware what's impossible to do in software." Physical access is a powerful discriminator :)
-hpa -- <hpa@transmeta.com> at work, <hpa@zytor.com> in private! "Unix gives you enough rope to shoot yourself in the foot." Architectures needed: ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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