Re: Tracing of vfork

Marc Lehmann (pcg@goof.com)
Sat, 13 Mar 1999 00:27:28 +0100

On Fri, Mar 12, 1999 at 10:13:06AM +0100, Harald Koenig wrote:
> On Mar 11, Michael Elizabeth Chastain wrote:
>
> > Yes there are no-op system calls. Just change it to sys_getpid,
> > and smash whatever you want on top of the return value on the way out.
> > Or set ORIG_EAX to __NR_nice and EBX to 0.
>
> be careful, nice(0) isn't necessaily a NOP all the time!
> it's not true if nice<0 before calling...

Why? nice doesn't adjust negative priorities differently than positive
ones (or zero).

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