libnl  3.5.0
genl-ctrl-list.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * src/genl-ctrl-list.c List Generic Netlink Families
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) 2003-2012 Thomas Graf <tgraf@suug.ch>
11  */
12 
13 #include <netlink/cli/utils.h>
14 
15 #include <linux/genetlink.h>
16 
17 static struct nl_cache *alloc_genl_family_cache(struct nl_sock *sk)
18 {
19  return nl_cli_alloc_cache(sk, "generic netlink family",
21 }
22 
23 static void print_usage(void)
24 {
25  printf(
26  "Usage: genl-ctrl-list [--details]\n"
27  "\n"
28  "Options\n"
29  " -d, --details Include detailed information in the list\n"
30  " -h, --help Show this help\n"
31  " -v, --version Show versioning information\n"
32  );
33  exit(0);
34 }
35 
36 int main(int argc, char *argv[])
37 {
38  struct nl_sock *sock;
39  struct nl_cache *family_cache;
40  struct nl_dump_params params = {
42  .dp_fd = stdout,
43  };
44 
45  sock = nl_cli_alloc_socket();
46  nl_cli_connect(sock, NETLINK_GENERIC);
47  family_cache = alloc_genl_family_cache(sock);
48 
49  for (;;) {
50  int c, optidx = 0;
51  static struct option long_opts[] = {
52  { "details", 0, 0, 'd' },
53  { "format", 1, 0, 'f' },
54  { "help", 0, 0, 'h' },
55  { "version", 0, 0, 'v' },
56  { 0, 0, 0, 0 }
57  };
58 
59  c = getopt_long(argc, argv, "df:hv", long_opts, &optidx);
60  if (c == -1)
61  break;
62 
63  switch (c) {
64  case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
65  case 'd': params.dp_type = NL_DUMP_DETAILS; break;
66  case 'h': print_usage(); break;
67  case 'v': nl_cli_print_version(); break;
68  }
69  }
70 
71  nl_cache_dump(family_cache, &params);
72 
73  return 0;
74 }
Dump object briefly on one line.
Definition: types.h:22
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
int genl_ctrl_alloc_cache(struct nl_sock *sk, struct nl_cache **result)
Allocate a new controller cache.
Definition: ctrl.c:334
Dump all attributes but no statistics.
Definition: types.h:23
void nl_cache_dump(struct nl_cache *cache, struct nl_dump_params *params)
Dump all elements of a cache.
Definition: cache.c:1203
Dumping parameters.
Definition: types.h:33