Robert Elz <kre@munnari.OZ.AU> writes:

> Rather than add a dozen (or more) new syscalls, then it starts looking
> a lot simpler to simply add a syscall to say "apply the real ids to the
> next syscall I make", so you would do something like
> 	magic_next_syscall()
> 	fd = open();

Oh yeah cool and right after magic_next_syscall() your
userland thread context changes...

        Sean.