Date: Mon, 07 Feb 2005 10:30:30 -0800 From: Tabor Kelly <tkelly-freebsd-questions@taborandtashell.net> To: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Very general shutdown question Message-ID: <4207B3C6.7000002@taborandtashell.net> In-Reply-To: <44zmygtgt7.fsf@be-well.ilk.org> References: <200502061646.27199.nedsmailbox2@cox.net> <4206E19B.6050503@taborandtashell.net> <44oeewwj4r.fsf@be-well.ilk.org> <4207A3DF.10301@taborandtashell.net> <44zmygtgt7.fsf@be-well.ilk.org>
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Well thanks, too bad I was planning on using those to make my backup
jobs easier. Anyway, here is a quick C program to accomplish the same
thing:
/* main.c */
#include <unistd.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
extern char **environ;
execve("/sbin/halt", argv, environ);
return EXIT_SUCCESS; /* note: we never actually get here */
}
to compile it, but type 'gcc main.c'
then copy a.out to /halt
then 'chown root:wheel /halt'
then 'chmod a+s /halt'
But when I got done writing and testing the program, I thought to myself:
Why not just set /sbin/halt to SUID root?
--
Tabor Kelly
tkelly-freebsd-questions@taborandtashell.net
http://tabor.taborandtashell.net
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