11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
103 lines
3 KiB
C
103 lines
3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright (C) 2014 Tom Gundersen <teg@jklm.no>
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***/
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <linux/veth.h>
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#include <net/if.h>
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#include "sd-event.h"
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#include "sd-ipv4acd.h"
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#include "sd-netlink.h"
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#include "in-addr-util.h"
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#include "netlink-util.h"
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#include "util.h"
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static void acd_handler(sd_ipv4acd *acd, int event, void *userdata) {
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assert_se(acd);
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switch (event) {
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case SD_IPV4ACD_EVENT_BIND:
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log_info("bound");
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break;
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case SD_IPV4ACD_EVENT_CONFLICT:
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log_info("conflict");
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break;
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case SD_IPV4ACD_EVENT_STOP:
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log_error("the client was stopped");
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break;
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default:
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assert_not_reached("invalid ACD event");
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}
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}
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static int client_run(int ifindex, const struct in_addr *pa, const struct ether_addr *ha, sd_event *e) {
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sd_ipv4acd *acd;
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assert_se(sd_ipv4acd_new(&acd) >= 0);
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assert_se(sd_ipv4acd_attach_event(acd, e, 0) >= 0);
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assert_se(sd_ipv4acd_set_ifindex(acd, ifindex) >= 0);
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assert_se(sd_ipv4acd_set_mac(acd, ha) >= 0);
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assert_se(sd_ipv4acd_set_address(acd, pa) >= 0);
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assert_se(sd_ipv4acd_set_callback(acd, acd_handler, NULL) >= 0);
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log_info("starting IPv4ACD client");
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assert_se(sd_ipv4acd_start(acd) >= 0);
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assert_se(sd_event_loop(e) >= 0);
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assert_se(!sd_ipv4acd_unref(acd));
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return EXIT_SUCCESS;
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}
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static int test_acd(const char *ifname, const char *address) {
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_cleanup_(sd_event_unrefp) sd_event *e = NULL;
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_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
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_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *reply = NULL;
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union in_addr_union pa;
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struct ether_addr ha;
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int ifindex;
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assert_se(in_addr_from_string(AF_INET, address, &pa) >= 0);
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assert_se(sd_event_new(&e) >= 0);
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assert_se(sd_netlink_open(&rtnl) >= 0);
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assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0);
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assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, 0) >= 0);
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assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, ifname) >= 0);
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assert_se(sd_netlink_call(rtnl, m, 0, &reply) >= 0);
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assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0);
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assert_se(sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &ha) >= 0);
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client_run(ifindex, &pa.in, &ha, e);
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return EXIT_SUCCESS;
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}
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int main(int argc, char *argv[]) {
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log_set_max_level(LOG_DEBUG);
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log_parse_environment();
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log_open();
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if (argc == 3)
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return test_acd(argv[1], argv[2]);
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else {
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log_error("This program takes two arguments.\n"
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"\t %s <ifname> <IPv4 address>", program_invocation_short_name);
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return EXIT_FAILURE;
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}
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}
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