libnl 3.5.0

nl-rule-list.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/nl-rule-dump.c Dump rule attributes
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) 2003-2009 Thomas Graf <tgraf@suug.ch>
11 */
12
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/rule.h>
15 #include <netlink/cli/link.h>
16
17 #include <linux/netlink.h>
18
19 static void print_usage(void)
20 {
21 printf(
22 "Usage: nl-rule-list [OPTION]... [ROUTE]\n"
23 "\n"
24 "Options\n"
25 " -c, --cache List the contents of the route cache\n"
26 " -f, --format=TYPE Output format { brief | details | stats }\n"
27 " -h, --help Show this help\n"
28 " -v, --version Show versioning information\n"
29 "\n"
30 "Rule Options\n"
31 " --family Address family\n"
32 );
33 exit(0);
34 }
35
36 int main(int argc, char *argv[])
37 {
38 struct nl_sock *sock;
39 struct rtnl_rule *rule;
40 struct nl_cache *rule_cache;
41 struct nl_dump_params params = {
42 .dp_fd = stdout,
43 .dp_type = NL_DUMP_LINE,
44 };
45
46 sock = nl_cli_alloc_socket();
47 nl_cli_connect(sock, NETLINK_ROUTE);
48 nl_cli_link_alloc_cache(sock);
49 rule_cache = nl_cli_rule_alloc_cache(sock);
50 rule = nl_cli_rule_alloc();
51
52 for (;;) {
53 int c, optidx = 0;
54 enum {
55 ARG_FAMILY = 257,
56 };
57 static struct option long_opts[] = {
58 { "format", 1, 0, 'f' },
59 { "help", 0, 0, 'h' },
60 { "version", 0, 0, 'v' },
61 { "family", 1, 0, ARG_FAMILY },
62 { 0, 0, 0, 0 }
63 };
64
65 c = getopt_long(argc, argv, "f:hv", long_opts, &optidx);
66 if (c == -1)
67 break;
68
69 switch (c) {
70 case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
71 case 'h': print_usage(); break;
72 case 'v': nl_cli_print_version(); break;
73 case ARG_FAMILY: nl_cli_rule_parse_family(rule, optarg); break;
74 }
75 }
76
77 nl_cache_dump_filter(rule_cache, &params, OBJ_CAST(rule));
78
79 return 0;
80 }
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
nl_dump_params::dp_fd
FILE * dp_fd
File descriptor the dumping output should go to.
Definition: types.h:83
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
nl_cache_dump_filter
void nl_cache_dump_filter(struct nl_cache *cache, struct nl_dump_params *params, struct nl_object *filter)
Dump all elements of a cache (filtered).
Definition: cache.c:1217
nl_dump_params
Dumping parameters.
Definition: types.h:33