iptables/nft-chain.c

   1 /*
   2  * Copyright (c) 2020  Red Hat GmbH.  Author: Phil Sutter <phil@nwl.cc>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published
   6  * by the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  */
   9
  10 #include <stdlib.h>
  11 #include <xtables.h>
  12
  13 #include "nft-chain.h"
  14
  15 struct nft_chain *nft_chain_alloc(struct nftnl_chain *nftnl, bool fake)
  16 {
  17         struct nft_chain *c = xtables_malloc(sizeof(*c));
  18
  19         INIT_LIST_HEAD(&c->head);
  20         c->nftnl = nftnl;
  21         c->fake = fake;
  22
  23         return c;
  24 }
  25
  26 void nft_chain_free(struct nft_chain *c)
  27 {
  28         if (c->nftnl)
  29                 nftnl_chain_free(c->nftnl);
  30         free(c);
  31 }
  32
  33 struct nft_chain_list *nft_chain_list_alloc(void)
  34 {
  35         struct nft_chain_list *list = xtables_malloc(sizeof(*list));
  36         int i;
  37
  38         INIT_LIST_HEAD(&list->list);
  39         for (i = 0; i < CHAIN_NAME_HSIZE; i++)
  40                 INIT_HLIST_HEAD(&list->names[i]);
  41
  42         return list;
  43 }
  44
  45 void nft_chain_list_del(struct nft_chain *c)
  46 {
  47         list_del(&c->head);
  48         hlist_del(&c->hnode);
  49 }
  50
  51 void nft_chain_list_free(struct nft_chain_list *list)
  52 {
  53         struct nft_chain *c, *c2;
  54
  55         list_for_each_entry_safe(c, c2, &list->list, head) {
  56                 nft_chain_list_del(c);
  57                 nft_chain_free(c);
  58         }
  59         free(list);
  60 }