int main(int argc, char *argv[])
{
struct nl_handle *nlh;
struct rtnl_addr *addr;
struct nl_addr *local;
int err = 1;
if (argc < 3 || !strcmp(argv[1], "-h")) {
printf("Usage: nl-addr-delete <addr> <ifindex>\n");
goto errout;
}
if (nltool_init(argc, argv) < 0)
goto errout;
nlh = nltool_alloc_handle();
if (!nlh)
goto errout;
addr = rtnl_addr_alloc();
if (!addr)
goto errout_free_handle;
if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
goto errout_free_addr;
local = nltool_addr_parse(argv[1]);
if (!local)
goto errout_close;
if (rtnl_addr_set_local(addr, local) < 0) {
fprintf(stderr, "Unable to set local address: %s\n",
nl_geterror());
goto errout_addr_put;
}
rtnl_addr_set_ifindex(addr, strtoul(argv[2], NULL, 0));
if (rtnl_addr_delete(nlh, addr, 0) < 0) {
fprintf(stderr, "Unable to delete address: %s\n",
nl_geterror());
goto errout_addr_put;
}
err = 0;
errout_addr_put:
nl_addr_put(local);
errout_close:
nl_close(nlh);
errout_free_addr:
rtnl_addr_put(addr);
errout_free_handle:
nl_handle_destroy(nlh);
errout:
return err;
}
int main(int argc, char *argv[])
{
struct nl_handle *nlh;
struct nl_cache *link_cache, *route_cache;
struct nl_addr *dst;
struct rtnl_route *route;
struct ip_lookup_res res;
struct nl_dump_params params = {
.dp_fd = stdout,
.dp_type = NL_DUMP_FULL
};
int err = 1;
if (argc < 2 || !strcmp(argv[1], "-h"))
print_usage();
if (nltool_init(argc, argv) < 0)
goto errout;
nlh = nltool_alloc_handle();
if (!nlh)
goto errout;
route = rtnl_route_alloc();
if (!route)
goto errout_free_handle;
if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
goto errout_free_route;
link_cache = nltool_alloc_link_cache(nlh);
if (!link_cache)
goto errout_close;
dst = nltool_addr_parse(argv[1]);
if (!dst)
goto errout_link_cache;
route_cache = nltool_alloc_route_cache(nlh);
if (!route_cache)
goto errout_addr_put;
{
struct nl_msg *m;
struct rtmsg rmsg = {
.rtm_family = nl_addr_get_family(dst),
.rtm_dst_len = nl_addr_get_prefixlen(dst),
};
m = nlmsg_alloc_simple(RTM_GETROUTE, 0);
nlmsg_append(m, &rmsg, sizeof(rmsg), NLMSG_ALIGNTO);
nla_put_addr(m, RTA_DST, dst);
if ((err = nl_send_auto_complete(nlh, m)) < 0) {
nlmsg_free(m);
fprintf(stderr, "%s\n", nl_geterror());
goto errout_route_cache;
}
nlmsg_free(m);
nl_socket_modify_cb(nlh, NL_CB_VALID, NL_CB_CUSTOM, cb,
route_cache);
if (nl_recvmsgs_default(nlh) < 0) {
fprintf(stderr, "%s\n", nl_geterror());
goto errout_route_cache;
}
}
rtnl_route_set_dst(route, dst);
nl_cache_dump_filter(route_cache, ¶ms, (struct nl_object *) route);
memset(&res, 0, sizeof(res));
nl_cache_foreach_filter(route_cache, (struct nl_object *) route, route_proc_cb,
&res);
printf("ip lookup result: oif idx: %d oif name %s ",
res.oif, res.oifname);
if (res.nh_addr) {
char buf[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &res.nh_addr, buf, sizeof(buf));
printf("via %s", buf);
}
printf ("\n");
err = 0;
errout_route_cache:
nl_cache_free(route_cache);
errout_addr_put:
nl_addr_put(dst);
errout_link_cache:
nl_cache_free(link_cache);
errout_close:
nl_close(nlh);
errout_free_route:
rtnl_route_put(route);
errout_free_handle:
nl_handle_destroy(nlh);
errout:
return err;
}
int main(int argc, char *argv[])
{
struct nl_handle *nlh;
struct nl_cache *link_cache, *route_cache;
struct nl_addr *dst;
struct nl_dump_params params = {
.dp_fd = stdout,
.dp_type = NL_DUMP_BRIEF
};
int err = 1;
if (argc < 2 || !strcmp(argv[1], "-h"))
print_usage();
if (nltool_init(argc, argv) < 0)
goto errout;
nlh = nl_handle_alloc_nondefault(nltool_cbset);
if (!nlh)
goto errout;
if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
goto errout_free_handle;
link_cache = nltool_alloc_link_cache(nlh);
if (!link_cache)
goto errout_close;
dst = nltool_addr_parse(argv[1]);
if (!dst)
goto errout_link_cache;
route_cache = nltool_alloc_route_cache(nlh);
if (!route_cache)
goto errout_addr_put;
{
struct nl_msg *m;
struct rtmsg rmsg = {
.rtm_family = nl_addr_get_family(dst),
.rtm_dst_len = nl_addr_get_prefixlen(dst),
};
m = nlmsg_build_simple(RTM_GETROUTE, 0);
nlmsg_append(m, &rmsg, sizeof(rmsg), 1);
nla_put_addr(m, RTA_DST, dst);
if ((err = nl_send_auto_complete(nlh, m)) < 0) {
nlmsg_free(m);
fprintf(stderr, "%s\n", nl_geterror());
goto errout_route_cache;
}
nlmsg_free(m);
nl_cb_set(nl_handle_get_cb(nlh), NL_CB_VALID, NL_CB_CUSTOM,
cb, route_cache);
if (nl_recvmsgs_def(nlh) < 0) {
fprintf(stderr, "%s\n", nl_geterror());
goto errout_route_cache;
}
}
nl_cache_dump(route_cache, ¶ms);
err = 0;
errout_route_cache:
nl_cache_free(route_cache);
errout_addr_put:
nl_addr_put(dst);
errout_link_cache:
nl_cache_free(link_cache);
errout_close:
nl_close(nlh);
errout_free_handle:
nl_handle_destroy(nlh);
errout:
return err;
}