nl-rule-list.c

/* SPDX-License-Identifier: LGPL-2.1-only */
/*
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */
 
#include <netlink/cli/utils.h>
#include <netlink/cli/rule.h>
#include <netlink/cli/link.h>
 
#include <linux/netlink.h>
 
static void print_usage(void)
{
        printf(
        "Usage: nl-rule-list [OPTION]... [ROUTE]\n"
        "\n"
        "Options\n"
        " -c, --cache           List the contents of the route cache\n"
        " -f, --format=TYPE     Output format { brief | details | stats }\n"
        " -h, --help            Show this help\n"
        " -v, --version         Show versioning information\n"
        "\n"
        "Rule Options\n"
        "     --family          Address family\n"
        );
        exit(0);
}
 
int main(int argc, char *argv[])
{
        struct nl_sock *sock;
        struct rtnl_rule *rule;
        struct nl_cache *rule_cache;
        struct nl_dump_params params = {
                .dp_fd = stdout,
                .dp_type = NL_DUMP_LINE,
        };
 
        sock = nl_cli_alloc_socket();
        nl_cli_connect(sock, NETLINK_ROUTE);
        nl_cli_link_alloc_cache(sock);
        rule_cache = nl_cli_rule_alloc_cache(sock);
        rule = nl_cli_rule_alloc();
 
        for (;;) {
                int c, optidx = 0;
                enum {
                        ARG_FAMILY = 257,
                };
                static struct option long_opts[] = {
                        { "format", 1, 0, 'f' },
                        { "help", 0, 0, 'h' },
                        { "version", 0, 0, 'v' },
                        { "family", 1, 0, ARG_FAMILY },
                        { 0, 0, 0, 0 }
                };
 
                c = getopt_long(argc, argv, "f:hv", long_opts, &optidx);
                if (c == -1)
                        break;
 
                switch (c) {
                case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
                case 'h': print_usage(); break;
                case 'v': nl_cli_print_version(); break;
                case ARG_FAMILY: nl_cli_rule_parse_family(rule, optarg); break;
                }
        }
 
        nl_cache_dump_filter(rule_cache, &params, OBJ_CAST(rule));
 
        return 0;
}