/* $NetBSD: rumpuser_int.h,v 1.2 2008/10/09 01:19:06 pooka Exp $ */ /* * Copyright (c) 2008 Antti Kantee. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* XXX */ void _kernel_lock(int); void _kernel_unlock(int, int *); #define KLOCK_WRAP(a) \ do { \ int nlocks; \ _kernel_unlock(0, &nlocks); \ a; \ if (nlocks) \ _kernel_lock(nlocks); \ } while (/*CONSTCOND*/0) #define DOCALL(rvtype, call) \ rvtype rv; \ rv = call; \ if (rv == -1) \ *error = errno; \ else \ *error = 0; \ return rv; #define DOCALL_KLOCK(rvtype, call) \ rvtype rv; \ int nlocks; \ _kernel_unlock(0, &nlocks); \ rv = call; \ if (nlocks) \ _kernel_lock(nlocks); \ if (rv == -1) \ *error = errno; \ else \ *error = 0; \ return rv;