rid

/*
 *  call-seq:
 *     Process.uid           => fixnum
 *     Process::UID.rid      => fixnum
 *     Process::Sys.getuid   => fixnum
 *
 *  Returns the (real) user ID of this process.
 *
 *     Process.uid   #=> 501
 */

static VALUE
proc_getuid(obj)
    VALUE obj;
{
    int uid = getuid();
    return INT2FIX(uid);
}