On Fri, 14 Jul 2000, Bruce McCulley <[EMAIL PROTECTED]> wrote:
> Funny you should mention it...
>
> Anyone know how can I read the PIII CPU id from within Linux?
>
> I'm at this very moment working on porting a security application to Linux. I
> need to be able to access as much information as possible to identify the
> environment, and the CPU id would be a great advantage to be able to tell the
> bad guys from the good guys.
Do motherboards commonly have a unique ID?
What I am confused about is what the hostid(1) / gethostid(3c) is doing
on Solaris to get a unique identifier on x86. Is it faking it or is it
real?
# man gethostid
Reformatting page. Please Wait... done
Standard C Library Functions gethostid(3C)
NAME
gethostid - get unique identifier of current host
SYNOPSIS
#include <unistd.h>
long gethostid(void);
DESCRIPTION
The gethostid() function returns the 32-bit identifier for
the current host, which should be unique across all hosts.
This number is usually taken from the CPU board's ID PROM.
SEE ALSO
hostid(1), sysinfo(2)
SunOS 5.8 Last change: 12 Feb 1993 1
Linux has a gethostid(3c) (and on Redhat 4.2 there was even a /usr/bin/hostid!)
Maybe it is all faked on Intel, but on other arches (e.g sparc, alpha)
perhaps it is something on the board... Anyone know?
Karl Runge
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