usr/src/cmd/ipf/lib/common/remove_hash.c

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