dist/ipf/lib/remove_hash.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2003 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  * Id: remove_hash.c,v 1.1.4.1 2006/06/16 17:21:16 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
  17 static int hashfd = -1;
  18
  19
  20 int remove_hash(iphp, iocfunc)
  21 iphtable_t *iphp;
  22 ioctlfunc_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 }