Set the real user ID of the calling process to
integer. Not available on all platforms.
/*
* call-seq:
* Process::Sys.setruid(integer) => nil
*
* Set the real user ID of the calling process to _integer_.
* Not available on all platforms.
*
*/
static VALUE
p_sys_setruid(obj, id)
VALUE obj, id;
{
#if defined HAVE_SETRUID
check_uid_switch();
if (setruid(NUM2INT(id)) != 0) rb_sys_fail(0);
#else
rb_notimplement();
#endif
return Qnil;
}