you must setuid() before you run the program through system(). man setuid.
On Sun, 4 Feb 2001, jteich wrote:
> I wanted to run a shell script program that needs to run with root permissions, and
>I wanted to
> be able to start this script without su'ing. I tried to set the suid bit on the
>program, but I
> found out that the suid bit only works for binary executables. Then I wrote a simple
>c program
> that starts up the shell program through the system() call, and I chown the program
>to root and
> set the suid bit on it, but for some reason the shell still wouldn't run as root.
>What am I
> doing wrong and is there any way aroud this?
>
> Thanks,
> -Yossie
>
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