libnl: /data/src/libnl3/src/genl-ctrl-list.c Source File

libnl 3.7.0

genl-ctrl-list.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2003-2012 Thomas Graf <tgraf@suug.ch>
4 */
5
6 #include <netlink/cli/utils.h>
7
8 #include <linux/genetlink.h>
9
10 static struct nl_cache *alloc_genl_family_cache(struct nl_sock *sk)
11 {
12 return nl_cli_alloc_cache(sk, "generic netlink family",
13 genl_ctrl_alloc_cache);
14 }
15
16 static void print_usage(void)
17 {
18 printf(
19 "Usage: genl-ctrl-list [--details]\n"
20 "\n"
21 "Options\n"
22 " -d, --details Include detailed information in the list\n"
23 " -h, --help Show this help\n"
24 " -v, --version Show versioning information\n"
25 );
26 exit(0);
27 }
28
29 int main(int argc, char *argv[])
30 {
31 struct nl_sock *sock;
32 struct nl_cache *family_cache;
33 struct nl_dump_params params = {
34 .dp_type = NL_DUMP_LINE,
35 .dp_fd = stdout,
36 };
37
38 sock = nl_cli_alloc_socket();
39 nl_cli_connect(sock, NETLINK_GENERIC);
40 family_cache = alloc_genl_family_cache(sock);
41
42 for (;;) {
43 int c, optidx = 0;
44 static struct option long_opts[] = {
45 { "details", 0, 0, 'd' },
46 { "format", 1, 0, 'f' },
47 { "help", 0, 0, 'h' },
48 { "version", 0, 0, 'v' },
49 { 0, 0, 0, 0 }
50 };
51
52 c = getopt_long(argc, argv, "df:hv", long_opts, &optidx);
53 if (c == -1)
54 break;
55
56 switch (c) {
57 case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
58 case 'd': params.dp_type = NL_DUMP_DETAILS; break;
59 case 'h': print_usage(); break;
60 case 'v': nl_cli_print_version(); break;
61 }
62 }
63
64 nl_cache_dump(family_cache, &params);
65
66 return 0;
67 }
nl_cache_dump
void nl_cache_dump(struct nl_cache *cache, struct nl_dump_params *params)
Dump all elements of a cache.
Definition: cache.c:1197
genl_ctrl_alloc_cache
int genl_ctrl_alloc_cache(struct nl_sock *sk, struct nl_cache **result)
Allocate a new controller cache.
Definition: ctrl.c:327
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
NL_DUMP_DETAILS
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:17
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