DBG_IO
DBG0(DBG_IO, "called\n");
DBG0(DBG_IO, "called\n");
DBG0(DBG_IO, "called\n");
DBG1(DBG_IO, "opening %s\n", IPPCTL_DEVICE);
DBG0(DBG_IO, "command\n");
DBG2(DBG_IO, "data[%d]: length = %d\n", count, dbuflen);
DBG1(DBG_IO, "nextbuflen = %d\n", nextbuflen);
DBG1(DBG_IO, "kernel return code = %d\n", rval);