128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/* $NetBSD: mln_ipl.c,v 1.38 2005/12/11 12:24:49 christos Exp $ */
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/*
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* Copyright (c) 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to the NetBSD Foundation
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* by Peter Postma.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mln_ipl.c,v 1.38 2005/12/11 12:24:49 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lkm.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/ipl.h>
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#include <netinet/ip_compat.h>
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#include <netinet/ip_fil.h>
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int if_ipl_lkmentry(struct lkm_table *, int, int);
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static int if_ipl_lkmload(struct lkm_table *, int);
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static int if_ipl_lkmunload(struct lkm_table *, int);
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extern const struct cdevsw ipl_cdevsw;
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MOD_DEV(IPL_VERSION, "ipl", NULL, -1, &ipl_cdevsw, -1);
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int
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if_ipl_lkmentry(struct lkm_table *lkmtp, int cmd, int ver)
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{
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LKM_DISPATCH(lkmtp, cmd, ver, if_ipl_lkmload, if_ipl_lkmunload,
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lkm_nofunc);
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}
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static int
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if_ipl_lkmload(struct lkm_table *lkmtp, int cmd)
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{
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const char *defpass;
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int error;
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if (lkmexists(lkmtp))
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return (EEXIST);
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error = iplattach();
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if (error == 0) {
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if (FR_ISPASS(fr_pass))
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defpass = "pass";
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else if (FR_ISBLOCK(fr_pass))
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defpass = "block";
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else
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defpass = "no-match -> block";
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printf("%s initialized. Default = %s all, Logging = %s%s\n",
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ipfilter_version, defpass,
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#ifdef IPFILTER_LOG
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"enabled",
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#else
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"disabled",
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#endif
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#ifdef IPFILTER_COMPILED
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" (COMPILED)"
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#else
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""
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#endif
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);
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fr_running = 1;
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}
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return (error);
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}
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static int
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if_ipl_lkmunload(struct lkm_table *lkmtp, int cmd)
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{
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int error = 0;
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if (fr_running > 0) {
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error = ipldetach();
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if (error == 0)
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fr_running = -1;
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}
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if (error == 0)
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printf("%s unloaded\n", ipfilter_version);
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return (error);
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}
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