libnl  3.5.0
rule.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * src/lib/rule.c CLI Routing Rule Helpers
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation version 2.1
8  * of the License.
9  *
10  * Copyright (c) 2008-2009 Thomas Graf <tgraf@suug.ch>
11  */
12 
13 /**
14  * @ingroup cli
15  * @defgroup cli_rule Routing Rules
16  *
17  * @{
18  */
19 
20 #include <netlink/cli/utils.h>
21 #include <netlink/cli/rule.h>
22 
23 struct rtnl_rule *nl_cli_rule_alloc(void)
24 {
25  struct rtnl_rule *rule;
26 
27  rule = rtnl_rule_alloc();
28  if (!rule)
29  nl_cli_fatal(ENOMEM, "Unable to allocate rule object");
30 
31  return rule;
32 }
33 
34 struct nl_cache *nl_cli_rule_alloc_cache(struct nl_sock *sk)
35 {
36  struct nl_cache *cache;
37  int err;
38 
39  if ((err = rtnl_rule_alloc_cache(sk, AF_UNSPEC, &cache)) < 0)
40  nl_cli_fatal(err, "Unable to allocate routing rule cache: %s\n",
41  nl_geterror(err));
42 
43  nl_cache_mngt_provide(cache);
44 
45  return cache;
46 }
47 
48 void nl_cli_rule_parse_family(struct rtnl_rule *rule, char *arg)
49 {
50  int family;
51 
52  if ((family = nl_str2af(arg)) != AF_UNSPEC)
53  rtnl_rule_set_family(rule, family);
54 }
55 
56 /** @} */
int rtnl_rule_alloc_cache(struct nl_sock *sock, int family, struct nl_cache **result)
Build a rule cache including all rules currently configured in the kernel.
Definition: rule.c:403
void nl_cache_mngt_provide(struct nl_cache *cache)
Provide a cache for global use.
Definition: cache_mngt.c:333
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78