import ipfilter 4.1.8 into the vendor branch

1 files changed, 53 insertions, 0 deletions

diff --git a/contrib/ipfilter/lib/remove_hash.c b/contrib/ipfilter/lib/remove_hash.c
new file mode 100644
index 0000000..256751f
--- /dev/null
+++ b/contrib/ipfilter/lib/remove_hash.c
@@ -0,0 +1,53 @@
+/*	$NetBSD$	*/
+
+/*
+ * Copyright (C) 2002 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * Id: remove_hash.c,v 1.1 2003/04/13 06:40:14 darrenr Exp
+ */
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include "ipf.h"
+#include "netinet/ip_lookup.h"
+#include "netinet/ip_htable.h"
+
+static int hashfd = -1;
+
+
+int remove_hash(iphp, iocfunc)
+iphtable_t *iphp;
+ioctlfunc_t iocfunc;
+{
+	iplookupop_t op;
+	iphtable_t iph;
+
+	if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0))
+		hashfd = open(IPLOOKUP_NAME, O_RDWR);
+	if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0))
+		return -1;
+
+	op.iplo_type = IPLT_HASH;
+	op.iplo_unit = iphp->iph_unit;
+	strncpy(op.iplo_name, iphp->iph_name, sizeof(op.iplo_name));
+	if (*op.iplo_name == '\0')
+		op.iplo_arg = IPHASH_ANON;
+	op.iplo_size = sizeof(iph);
+	op.iplo_struct = &iph;
+
+	bzero((char *)&iph, sizeof(iph));
+	iph.iph_unit = iphp->iph_unit;
+	iph.iph_type = iphp->iph_type;
+	strncpy(iph.iph_name, iphp->iph_name, sizeof(iph.iph_name));
+	iph.iph_flags = iphp->iph_flags;
+
+	if ((*iocfunc)(hashfd, SIOCLOOKUPDELTABLE, &op))
+		if ((opts & OPT_DONOTHING) == 0) {
+			perror("remove_hash:SIOCLOOKUPDELTABLE");
+			return -1;
+		}
+
+	return 0;
+}