libnl: /data/src/libnl3/src/nl-rule-list.c Source File

libnl 3.7.0

nl-rule-list.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
4 */
5
6 #include <netlink/cli/utils.h>
7 #include <netlink/cli/rule.h>
8 #include <netlink/cli/link.h>
9
10 #include <linux/netlink.h>
11
12 static void print_usage(void)
13 {
14 printf(
15 "Usage: nl-rule-list [OPTION]... [ROUTE]\n"
16 "\n"
17 "Options\n"
18 " -c, --cache List the contents of the route cache\n"
19 " -f, --format=TYPE Output format { brief | details | stats }\n"
20 " -h, --help Show this help\n"
21 " -v, --version Show versioning information\n"
22 "\n"
23 "Rule Options\n"
24 " --family Address family\n"
25 );
26 exit(0);
27 }
28
29 int main(int argc, char *argv[])
30 {
31 struct nl_sock *sock;
32 struct rtnl_rule *rule;
33 struct nl_cache *rule_cache;
34 struct nl_dump_params params = {
35 .dp_fd = stdout,
36 .dp_type = NL_DUMP_LINE,
37 };
38
39 sock = nl_cli_alloc_socket();
40 nl_cli_connect(sock, NETLINK_ROUTE);
41 nl_cli_link_alloc_cache(sock);
42 rule_cache = nl_cli_rule_alloc_cache(sock);
43 rule = nl_cli_rule_alloc();
44
45 for (;;) {
46 int c, optidx = 0;
47 enum {
48 ARG_FAMILY = 257,
49 };
50 static struct option long_opts[] = {
51 { "format", 1, 0, 'f' },
52 { "help", 0, 0, 'h' },
53 { "version", 0, 0, 'v' },
54 { "family", 1, 0, ARG_FAMILY },
55 { 0, 0, 0, 0 }
56 };
57
58 c = getopt_long(argc, argv, "f:hv", long_opts, &optidx);
59 if (c == -1)
60 break;
61
62 switch (c) {
63 case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
64 case 'h': print_usage(); break;
65 case 'v': nl_cli_print_version(); break;
66 case ARG_FAMILY: nl_cli_rule_parse_family(rule, optarg); break;
67 }
68 }
69
70 nl_cache_dump_filter(rule_cache, &params, OBJ_CAST(rule));
71
72 return 0;
73 }
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:1211
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
nl_dump_params
Dumping parameters.
Definition: types.h:28
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:32
nl_dump_params::dp_fd
FILE * dp_fd
File descriptor the dumping output should go to.
Definition: types.h:77