nl-addr-delete.c

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */
 
#include <netlink/cli/utils.h>
#include <netlink/cli/addr.h>
#include <netlink/cli/link.h>
 
#include <linux/netlink.h>
 
static struct nl_sock *sock;
static int interactive = 0, default_yes = 0, quiet = 0;
static int deleted = 0;
 
static void print_usage(void)
{
        printf(
"Usage: nl-addr-delete [OPTION]... [ADDRESS]\n"
"\n"
"Options\n"
" -i, --interactive         Run interactively.\n"
"     --yes                 Set default answer to yes.\n"
" -q, --quiet               Do not print informal notifications.\n"
" -h, --help                Show this help.\n"
" -v, --version             Show versioning information.\n"
"\n"
"Address Options\n"
" -a, --local=ADDR          Local address.\n"
" -d, --dev=DEV             Associated network device.\n"
"     --family=FAMILY       Family of local address.\n"
"     --label=STRING        Address label (IPv4).\n"
"     --peer=ADDR           Peer address (IPv4).\n"
"     --scope=SCOPE         Address scope (IPv4).\n"
"     --broadcast=ADDR      Broadcast address of network (IPv4).\n"
"     --valid-lifetime=TS   Valid lifetime before route expires (IPv6).\n"
"     --preferred=TIME      Preferred lifetime (IPv6).\n"
"     --valid=TIME          Valid lifetime (IPv6).\n"
        );
 
        exit(0);
}
 
static void delete_cb(struct nl_object *obj, void *arg)
{
        struct rtnl_addr *addr = nl_object_priv(obj);
        struct nl_dump_params params = {
                .dp_type = NL_DUMP_LINE,
                .dp_fd = stdout,
        };
        int err;
 
        if (interactive && !nl_cli_confirm(obj, &params, default_yes))
                return;
 
        if ((err = rtnl_addr_delete(sock, addr, 0)) < 0)
                nl_cli_fatal(err, "Unable to delete address: %s\n",
                             nl_geterror(err));
 
        if (!quiet) {
                printf("Deleted ");
                nl_object_dump(obj, &params);
        }
 
        deleted++;
}
 
int main(int argc, char *argv[])
{
        struct rtnl_addr *addr;
        struct nl_cache *link_cache, *addr_cache;
 
        sock = nl_cli_alloc_socket();
        nl_cli_connect(sock, NETLINK_ROUTE);
        link_cache = nl_cli_link_alloc_cache(sock);
        addr_cache = nl_cli_addr_alloc_cache(sock);
        addr = nl_cli_addr_alloc();
 
        for (;;) {
                int c, optidx = 0;
                enum {
                        ARG_FAMILY = 257,
                        ARG_LABEL = 258,
                        ARG_YES,
                        ARG_PEER,
                        ARG_SCOPE,
                        ARG_BROADCAST,
                        ARG_PREFERRED,
                        ARG_VALID,
                };
                static struct option long_opts[] = {
                        { "interactive", 0, 0, 'i' },
                        { "yes", 0, 0, ARG_YES },
                        { "quiet", 0, 0, 'q' },
                        { "help", 0, 0, 'h' },
                        { "version", 0, 0, 'v' },
                        { "local", 1, 0, 'a' },
                        { "dev", 1, 0, 'd' },
                        { "family", 1, 0, ARG_FAMILY },
                        { "label", 1, 0, ARG_LABEL },
                        { "peer", 1, 0, ARG_PEER },
                        { "scope", 1, 0, ARG_SCOPE },
                        { "broadcast", 1, 0, ARG_BROADCAST },
                        { "preferred", 1, 0, ARG_PREFERRED },
                        { "valid", 1, 0, ARG_VALID },
                        { 0, 0, 0, 0 }
                };
 
                c = getopt_long(argc, argv, "iqhva:d:", long_opts, &optidx);
                if (c == -1)
                        break;
 
                switch (c) {
                case 'i': interactive = 1; break;
                case ARG_YES: default_yes = 1; break;
                case 'q': quiet = 1; break;
                case 'h': print_usage(); break;
                case 'v': nl_cli_print_version(); break;
                case 'a': nl_cli_addr_parse_local(addr, optarg); break;
                case 'd': nl_cli_addr_parse_dev(addr, link_cache, optarg); break;
                case ARG_FAMILY: nl_cli_addr_parse_family(addr, optarg); break;
                case ARG_LABEL: nl_cli_addr_parse_label(addr, optarg); break;
                case ARG_PEER: nl_cli_addr_parse_peer(addr, optarg); break;
                case ARG_SCOPE: nl_cli_addr_parse_scope(addr, optarg); break;
                case ARG_BROADCAST: nl_cli_addr_parse_broadcast(addr, optarg); break;
                case ARG_PREFERRED: nl_cli_addr_parse_preferred(addr, optarg); break;
                case ARG_VALID: nl_cli_addr_parse_valid(addr, optarg); break;
                }
        }
 
        nl_cache_foreach_filter(addr_cache, OBJ_CAST(addr), delete_cb, NULL);
 
        if (!quiet)
                printf("Deleted %d addresses\n", deleted);
 
        return 0;
}