remove_hash.c revision 145511 
1/*	$NetBSD$	*/
2
3/*
4 * Copyright (C) 2002 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * Id: remove_hash.c,v 1.1 2003/04/13 06:40:14 darrenr Exp
9 */
10
11#include <fcntl.h>
12#include <sys/ioctl.h>
13#include "ipf.h"
14#include "netinet/ip_lookup.h"
15#include "netinet/ip_htable.h"
16
17static int hashfd = -1;
18
19
20int remove_hash(iphp, iocfunc)
21iphtable_t *iphp;
22ioctlfunc_t iocfunc;
23{
24	iplookupop_t op;
25	iphtable_t iph;
26
27	if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0))
28		hashfd = open(IPLOOKUP_NAME, O_RDWR);
29	if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0))
30		return -1;
31
32	op.iplo_type = IPLT_HASH;
33	op.iplo_unit = iphp->iph_unit;
34	strncpy(op.iplo_name, iphp->iph_name, sizeof(op.iplo_name));
35	if (*op.iplo_name == '\0')
36		op.iplo_arg = IPHASH_ANON;
37	op.iplo_size = sizeof(iph);
38	op.iplo_struct = &iph;
39
40	bzero((char *)&iph, sizeof(iph));
41	iph.iph_unit = iphp->iph_unit;
42	iph.iph_type = iphp->iph_type;
43	strncpy(iph.iph_name, iphp->iph_name, sizeof(iph.iph_name));
44	iph.iph_flags = iphp->iph_flags;
45
46	if ((*iocfunc)(hashfd, SIOCLOOKUPDELTABLE, &op))
47		if ((opts & OPT_DONOTHING) == 0) {
48			perror("remove_hash:SIOCLOOKUPDELTABLE");
49			return -1;
50		}
51
52	return 0;
53}
54