genl-ctrl-list.c

/* SPDX-License-Identifier: LGPL-2.1-only */
/*
 * Copyright (c) 2003-2012 Thomas Graf <tgraf@suug.ch>
 */
 
#include <netlink/cli/utils.h>
 
#include <linux/genetlink.h>
 
static struct nl_cache *alloc_genl_family_cache(struct nl_sock *sk)
{
        return nl_cli_alloc_cache(sk, "generic netlink family",
                                  genl_ctrl_alloc_cache);
}
 
static void print_usage(void)
{
        printf(
        "Usage: genl-ctrl-list [--details]\n"
        "\n"
        "Options\n"
        " -d, --details         Include detailed information in the list\n"
        " -h, --help            Show this help\n"
        " -v, --version         Show versioning information\n"
        );
        exit(0);
}
 
int main(int argc, char *argv[])
{
        struct nl_sock *sock;
        struct nl_cache *family_cache;
        struct nl_dump_params params = {
                .dp_type = NL_DUMP_LINE,
                .dp_fd = stdout,
        };
 
        sock = nl_cli_alloc_socket();
        nl_cli_connect(sock, NETLINK_GENERIC);
        family_cache = alloc_genl_family_cache(sock);
 
        for (;;) {
                int c, optidx = 0;
                static struct option long_opts[] = {
                        { "details", 0, 0, 'd' },
                        { "format", 1, 0, 'f' },
                        { "help", 0, 0, 'h' },
                        { "version", 0, 0, 'v' },
                        { 0, 0, 0, 0 }
                };
 
                c = getopt_long(argc, argv, "df:hv", long_opts, &optidx);
                if (c == -1)
                        break;
 
                switch (c) {
                case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
                case 'd': params.dp_type = NL_DUMP_DETAILS; break;
                case 'h': print_usage(); break;
                case 'v': nl_cli_print_version(); break;
                }
        }
 
        nl_cache_dump(family_cache, &params);
 
        return 0;
}