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