[thirdparty/systemd.git] / src / libsystemd / sd-netlink / test-netlink.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <net/if.h>
#include <netinet/ether.h>

#include "sd-netlink.h"

#include "alloc-util.h"
#include "ether-addr-util.h"
#include "macro.h"
#include "missing.h"
#include "netlink-util.h"
#include "socket-util.h"
#include "string-util.h"
#include "util.h"

static void test_message_link_bridge(sd_netlink *rtnl) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
        uint32_t cost;

        assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0);
        assert_se(sd_rtnl_message_link_set_family(message, PF_BRIDGE) >= 0);
        assert_se(sd_netlink_message_open_container(message, IFLA_PROTINFO) >= 0);
        assert_se(sd_netlink_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0);
        assert_se(sd_netlink_message_close_container(message) >= 0);

        assert_se(sd_netlink_message_rewind(message) >= 0);

        assert_se(sd_netlink_message_enter_container(message, IFLA_PROTINFO) >= 0);
        assert_se(sd_netlink_message_read_u32(message, IFLA_BRPORT_COST, &cost) >= 0);
        assert_se(cost == 10);
        assert_se(sd_netlink_message_exit_container(message) >= 0);
}

static void test_link_configure(sd_netlink *rtnl, int ifindex) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
        const char *mac = "98:fe:94:3f:c6:18", *name = "test";
        char buffer[ETHER_ADDR_TO_STRING_MAX];
        uint32_t mtu = 1450, mtu_out;
        const char *name_out;
        struct ether_addr mac_out;

        /* we'd really like to test NEWLINK, but let's not mess with the running kernel */
        assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
        assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, name) >= 0);
        assert_se(sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
        assert_se(sd_netlink_message_append_u32(message, IFLA_MTU, mtu) >= 0);

        assert_se(sd_netlink_call(rtnl, message, 0, NULL) == 1);
        assert_se(sd_netlink_message_rewind(message) >= 0);

        assert_se(sd_netlink_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
        assert_se(streq(name, name_out));

        assert_se(sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
        assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));

        assert_se(sd_netlink_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
        assert_se(mtu == mtu_out);
}

static void test_link_get(sd_netlink *rtnl, int ifindex) {
        sd_netlink_message *m;
        sd_netlink_message *r;
        uint32_t mtu = 1500;
        const char *str_data;
        uint8_t u8_data;
        uint32_t u32_data;
        struct ether_addr eth_data;

        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
        assert_se(m);

        /* u8 test cases  */
        assert_se(sd_netlink_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
        assert_se(sd_netlink_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
        assert_se(sd_netlink_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);

        /* u32 test cases */
        assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, mtu) >= 0);
        assert_se(sd_netlink_message_append_u32(m, IFLA_GROUP, 0) >= 0);
        assert_se(sd_netlink_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
        assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
        assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);

        assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);

        assert_se(sd_netlink_message_read_string(r, IFLA_IFNAME, &str_data) == 0);

        assert_se(sd_netlink_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
        assert_se(sd_netlink_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
        assert_se(sd_netlink_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);

        assert_se(sd_netlink_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
        assert_se(sd_netlink_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
        assert_se(sd_netlink_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
        assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
        assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);

        assert_se(sd_netlink_message_read_ether_addr(r, IFLA_ADDRESS, &eth_data) == 0);

        assert_se((m = sd_netlink_message_unref(m)) == NULL);
        assert_se((r = sd_netlink_message_unref(r)) == NULL);
}

static void test_address_get(sd_netlink *rtnl, int ifindex) {
        sd_netlink_message *m;
        sd_netlink_message *r;
        struct in_addr in_data;
        struct ifa_cacheinfo cache;
        const char *label;

        assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
        assert_se(m);

        assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);

        assert_se(sd_netlink_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
        assert_se(sd_netlink_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
        assert_se(sd_netlink_message_read_string(r, IFA_LABEL, &label) == 0);
        assert_se(sd_netlink_message_read_cache_info(r, IFA_CACHEINFO, &cache) == 0);

        assert_se((m = sd_netlink_message_unref(m)) == NULL);
        assert_se((r = sd_netlink_message_unref(r)) == NULL);

}

static void test_route(sd_netlink *rtnl) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req;
        struct in_addr addr, addr_data;
        uint32_t index = 2, u32_data;
        int r;

        r = sd_rtnl_message_new_route(rtnl, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC);
        if (r < 0) {
                log_error_errno(r, "Could not create RTM_NEWROUTE message: %m");
                return;
        }

        addr.s_addr = htonl(INADDR_LOOPBACK);

        r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &addr);
        if (r < 0) {
                log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
                return;
        }

        r = sd_netlink_message_append_u32(req, RTA_OIF, index);
        if (r < 0) {
                log_error_errno(r, "Could not append RTA_OIF attribute: %m");
                return;
        }

        assert_se(sd_netlink_message_rewind(req) >= 0);

        assert_se(sd_netlink_message_read_in_addr(req, RTA_GATEWAY, &addr_data) >= 0);
        assert_se(addr_data.s_addr == addr.s_addr);

        assert_se(sd_netlink_message_read_u32(req, RTA_OIF, &u32_data) >= 0);
        assert_se(u32_data == index);

        assert_se((req = sd_netlink_message_unref(req)) == NULL);
}

static void test_multiple(void) {
        sd_netlink *rtnl1, *rtnl2;

        assert_se(sd_netlink_open(&rtnl1) >= 0);
        assert_se(sd_netlink_open(&rtnl2) >= 0);

        rtnl1 = sd_netlink_unref(rtnl1);
        rtnl2 = sd_netlink_unref(rtnl2);
}

static int link_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
        char *ifname = userdata;
        const char *data;

        assert_se(rtnl);
        assert_se(m);
        assert_se(userdata);

        log_info("%s: got link info about %s", __func__, ifname);
        free(ifname);

        assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
        assert_se(streq(data, "lo"));

        return 1;
}

static void test_event_loop(int ifindex) {
        _cleanup_(sd_event_unrefp) sd_event *event = NULL;
        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
        char *ifname;

        ifname = strdup("lo2");
        assert_se(ifname);

        assert_se(sd_netlink_open(&rtnl) >= 0);
        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);

        assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler, NULL, ifname, 0, NULL) >= 0);

        assert_se(sd_event_default(&event) >= 0);

        assert_se(sd_netlink_attach_event(rtnl, event, 0) >= 0);

        assert_se(sd_event_run(event, 0) >= 0);

        assert_se(sd_netlink_detach_event(rtnl) >= 0);

        assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
}

static void test_async(int ifindex) {
        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL;
        _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
        char *ifname;

        ifname = strdup("lo");
        assert_se(ifname);

        assert_se(sd_netlink_open(&rtnl) >= 0);

        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);

        assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler, NULL, ifname, 0, NULL) >= 0);

        assert_se(sd_netlink_wait(rtnl, 0) >= 0);
        assert_se(sd_netlink_process(rtnl, &r) >= 0);

        assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
}

struct test_async_object {
        unsigned n_ref;
        char *ifname;
};

static struct test_async_object *test_async_object_free(struct test_async_object *t) {
        assert(t);

        free(t->ifname);
        return mfree(t);
}

DEFINE_PRIVATE_TRIVIAL_REF_UNREF_FUNC(struct test_async_object, test_async_object, test_async_object_free);
DEFINE_TRIVIAL_CLEANUP_FUNC(struct test_async_object *, test_async_object_unref);

static int link_handler2(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
        struct test_async_object *t = userdata;
        const char *data;

        assert_se(rtnl);
        assert_se(m);
        assert_se(userdata);

        log_info("%s: got link info about %s", __func__, t->ifname);

        assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
        assert_se(streq(data, "lo"));

        return 1;
}

static void test_async_object_destroy(void *userdata) {
        struct test_async_object *t = userdata;

        assert(userdata);

        log_info("%s: n_ref=%u", __func__, t->n_ref);
        test_async_object_unref(t);
}

static void test_async_destroy_callback(int ifindex) {
        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL;
        _cleanup_(test_async_object_unrefp) struct test_async_object *t = NULL;
        _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
        char *ifname;

        assert_se(t = new(struct test_async_object, 1));
        assert_se(ifname = strdup("lo"));
        *t = (struct test_async_object) {
                .n_ref = 1,
                .ifname = ifname,
        };

        assert_se(sd_netlink_open(&rtnl) >= 0);

        /* destroy callback is called after processing message */
        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
        assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);

        assert_se(t->n_ref == 1);
        assert_se(test_async_object_ref(t));
        assert_se(t->n_ref == 2);

        assert_se(sd_netlink_wait(rtnl, 0) >= 0);
        assert_se(sd_netlink_process(rtnl, &r) == 1);
        assert_se(t->n_ref == 1);

        assert_se(!sd_netlink_message_unref(m));

        /* destroy callback is called when asynchronous call is cancelled, that is, slot is freed. */
        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
        assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);

        assert_se(t->n_ref == 1);
        assert_se(test_async_object_ref(t));
        assert_se(t->n_ref == 2);

        assert_se(!(slot = sd_netlink_slot_unref(slot)));
        assert_se(t->n_ref == 1);

        assert_se(!sd_netlink_message_unref(m));

        /* destroy callback is also called by sd_netlink_unref() */
        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
        assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);

        assert_se(t->n_ref == 1);
        assert_se(test_async_object_ref(t));
        assert_se(t->n_ref == 2);

        assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
        assert_se(t->n_ref == 1);
}

static int pipe_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
        int *counter = userdata;
        int r;

        (*counter)--;

        r = sd_netlink_message_get_errno(m);

        log_info_errno(r, "%d left in pipe. got reply: %m", *counter);

        assert_se(r >= 0);

        return 1;
}

static void test_pipe(int ifindex) {
        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m1 = NULL, *m2 = NULL;
        int counter = 0;

        assert_se(sd_netlink_open(&rtnl) >= 0);

        assert_se(sd_rtnl_message_new_link(rtnl, &m1, RTM_GETLINK, ifindex) >= 0);
        assert_se(sd_rtnl_message_new_link(rtnl, &m2, RTM_GETLINK, ifindex) >= 0);

        counter++;
        assert_se(sd_netlink_call_async(rtnl, NULL, m1, pipe_handler, NULL, &counter, 0, NULL) >= 0);

        counter++;
        assert_se(sd_netlink_call_async(rtnl, NULL, m2, pipe_handler, NULL, &counter, 0, NULL) >= 0);

        while (counter > 0) {
                assert_se(sd_netlink_wait(rtnl, 0) >= 0);
                assert_se(sd_netlink_process(rtnl, NULL) >= 0);
        }

        assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
}

static void test_container(sd_netlink *rtnl) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
        uint16_t u16_data;
        uint32_t u32_data;
        const char *string_data;

        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);

        assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
        assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "vlan") >= 0);
        assert_se(sd_netlink_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0);
        assert_se(sd_netlink_message_close_container(m) >= 0);
        assert_se(sd_netlink_message_append_string(m, IFLA_INFO_KIND, "vlan") >= 0);
        assert_se(sd_netlink_message_close_container(m) >= 0);
        assert_se(sd_netlink_message_close_container(m) == -EINVAL);

        assert_se(sd_netlink_message_rewind(m) >= 0);

        assert_se(sd_netlink_message_enter_container(m, IFLA_LINKINFO) >= 0);
        assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
        assert_se(streq("vlan", string_data));

        assert_se(sd_netlink_message_enter_container(m, IFLA_INFO_DATA) >= 0);
        assert_se(sd_netlink_message_read_u16(m, IFLA_VLAN_ID, &u16_data) >= 0);
        assert_se(sd_netlink_message_exit_container(m) >= 0);

        assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
        assert_se(streq("vlan", string_data));
        assert_se(sd_netlink_message_exit_container(m) >= 0);

        assert_se(sd_netlink_message_read_u32(m, IFLA_LINKINFO, &u32_data) < 0);

        assert_se(sd_netlink_message_exit_container(m) == -EINVAL);
}

static void test_match(void) {
        _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *s1 = NULL, *s2 = NULL;
        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;

        assert_se(sd_netlink_open(&rtnl) >= 0);

        assert_se(sd_netlink_add_match(rtnl, &s1, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
        assert_se(sd_netlink_add_match(rtnl, &s2, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
        assert_se(sd_netlink_add_match(rtnl, NULL, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);

        assert_se(!(s1 = sd_netlink_slot_unref(s1)));
        assert_se(!(s2 = sd_netlink_slot_unref(s2)));

        assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
}

static void test_get_addresses(sd_netlink *rtnl) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
        sd_netlink_message *m;

        assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0);

        assert_se(sd_netlink_call(rtnl, req, 0, &reply) >= 0);

        for (m = reply; m; m = sd_netlink_message_next(m)) {
                uint16_t type;
                unsigned char scope, flags;
                int family, ifindex;

                assert_se(sd_netlink_message_get_type(m, &type) >= 0);
                assert_se(type == RTM_NEWADDR);

                assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0);
                assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0);
                assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0);
                assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0);

                assert_se(ifindex > 0);
                assert_se(IN_SET(family, AF_INET, AF_INET6));

                log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex);
        }
}

static void test_message(sd_netlink *rtnl) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;

        assert_se(rtnl_message_new_synthetic_error(rtnl, -ETIMEDOUT, 1, &m) >= 0);
        assert_se(sd_netlink_message_get_errno(m) == -ETIMEDOUT);
}

int main(void) {
        sd_netlink *rtnl;
        sd_netlink_message *m;
        sd_netlink_message *r;
        const char *string_data;
        int if_loopback;
        uint16_t type;

        test_match();
        test_multiple();

        assert_se(sd_netlink_open(&rtnl) >= 0);
        assert_se(rtnl);

        test_route(rtnl);
        test_message(rtnl);
        test_container(rtnl);

        if_loopback = (int) if_nametoindex("lo");
        assert_se(if_loopback > 0);

        test_async(if_loopback);
        test_async_destroy_callback(if_loopback);
        test_pipe(if_loopback);
        test_event_loop(if_loopback);
        test_link_configure(rtnl, if_loopback);

        test_get_addresses(rtnl);
        test_message_link_bridge(rtnl);

        assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, if_loopback) >= 0);
        assert_se(m);

        assert_se(sd_netlink_message_get_type(m, &type) >= 0);
        assert_se(type == RTM_GETLINK);

        assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &string_data) == -EPERM);

        assert_se(sd_netlink_call(rtnl, m, 0, &r) == 1);
        assert_se(sd_netlink_message_get_type(r, &type) >= 0);
        assert_se(type == RTM_NEWLINK);

        assert_se((r = sd_netlink_message_unref(r)) == NULL);

        assert_se(sd_netlink_call(rtnl, m, -1, &r) == -EPERM);
        assert_se((m = sd_netlink_message_unref(m)) == NULL);
        assert_se((r = sd_netlink_message_unref(r)) == NULL);

        test_link_get(rtnl, if_loopback);
        test_address_get(rtnl, if_loopback);

        assert_se((m = sd_netlink_message_unref(m)) == NULL);
        assert_se((r = sd_netlink_message_unref(r)) == NULL);
        assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);

        return EXIT_SUCCESS;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
1c4baffc	2
1c4baffc	3	#include <net/if.h>
07630cea	4	#include <netinet/ether.h>
1c4baffc	5
1c4baffc	6	#include "sd-netlink.h"
07630cea	7
0d0f02cd	8	#include "alloc-util.h"
81a56d6f	9	#include "ether-addr-util.h"
07630cea	10	#include "macro.h"
1c4baffc	11	#include "missing.h"
07630cea LP	12	#include "netlink-util.h"
	13	#include "socket-util.h"
	14	#include "string-util.h"
	15	#include "util.h"
1c4baffc TG	16
1c4baffc TG	17	static void test_message_link_bridge(sd_netlink *rtnl) {
4afd3348	18	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
1c4baffc TG	19	uint32_t cost;
	20
	21	assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0);
	22	assert_se(sd_rtnl_message_link_set_family(message, PF_BRIDGE) >= 0);
	23	assert_se(sd_netlink_message_open_container(message, IFLA_PROTINFO) >= 0);
	24	assert_se(sd_netlink_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0);
	25	assert_se(sd_netlink_message_close_container(message) >= 0);
	26
	27	assert_se(sd_netlink_message_rewind(message) >= 0);
	28
	29	assert_se(sd_netlink_message_enter_container(message, IFLA_PROTINFO) >= 0);
	30	assert_se(sd_netlink_message_read_u32(message, IFLA_BRPORT_COST, &cost) >= 0);
	31	assert_se(cost == 10);
	32	assert_se(sd_netlink_message_exit_container(message) >= 0);
	33	}
	34
	35	static void test_link_configure(sd_netlink *rtnl, int ifindex) {
4afd3348	36	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
1c4baffc TG	37	const char mac = "98:fe:94:3f:c6:18", name = "test";
1c4baffc TG	38	char buffer[ETHER_ADDR_TO_STRING_MAX];
4e964aa0	39	uint32_t mtu = 1450, mtu_out;
1c4baffc TG	40	const char *name_out;
	41	struct ether_addr mac_out;
	42
	43	/* we'd really like to test NEWLINK, but let's not mess with the running kernel */
	44	assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
	45	assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, name) >= 0);
	46	assert_se(sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
	47	assert_se(sd_netlink_message_append_u32(message, IFLA_MTU, mtu) >= 0);
	48
	49	assert_se(sd_netlink_call(rtnl, message, 0, NULL) == 1);
	50	assert_se(sd_netlink_message_rewind(message) >= 0);
	51
	52	assert_se(sd_netlink_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
	53	assert_se(streq(name, name_out));
	54
	55	assert_se(sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
	56	assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));
	57
	58	assert_se(sd_netlink_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
	59	assert_se(mtu == mtu_out);
	60	}
	61
	62	static void test_link_get(sd_netlink *rtnl, int ifindex) {
	63	sd_netlink_message *m;
	64	sd_netlink_message *r;
4e964aa0	65	uint32_t mtu = 1500;
1c4baffc TG	66	const char *str_data;
	67	uint8_t u8_data;
	68	uint32_t u32_data;
	69	struct ether_addr eth_data;
	70
	71	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
	72	assert_se(m);
	73
	74	/* u8 test cases */
	75	assert_se(sd_netlink_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
	76	assert_se(sd_netlink_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
	77	assert_se(sd_netlink_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
	78
	79	/* u32 test cases */
	80	assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, mtu) >= 0);
	81	assert_se(sd_netlink_message_append_u32(m, IFLA_GROUP, 0) >= 0);
	82	assert_se(sd_netlink_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
	83	assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
	84	assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
	85
	86	assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
	87
	88	assert_se(sd_netlink_message_read_string(r, IFLA_IFNAME, &str_data) == 0);
	89
	90	assert_se(sd_netlink_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
	91	assert_se(sd_netlink_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
	92	assert_se(sd_netlink_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);
	93
	94	assert_se(sd_netlink_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
	95	assert_se(sd_netlink_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
	96	assert_se(sd_netlink_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
	97	assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
	98	assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);
	99
	100	assert_se(sd_netlink_message_read_ether_addr(r, IFLA_ADDRESS, &eth_data) == 0);
	101
1c4baffc TG	102	assert_se((m = sd_netlink_message_unref(m)) == NULL);
	103	assert_se((r = sd_netlink_message_unref(r)) == NULL);
	104	}
	105
1c4baffc TG	106	static void test_address_get(sd_netlink *rtnl, int ifindex) {
	107	sd_netlink_message *m;
	108	sd_netlink_message *r;
	109	struct in_addr in_data;
	110	struct ifa_cacheinfo cache;
	111	const char *label;
	112
	113	assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
	114	assert_se(m);
	115
	116	assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
	117
	118	assert_se(sd_netlink_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
	119	assert_se(sd_netlink_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
	120	assert_se(sd_netlink_message_read_string(r, IFA_LABEL, &label) == 0);
	121	assert_se(sd_netlink_message_read_cache_info(r, IFA_CACHEINFO, &cache) == 0);
	122
1c4baffc TG	123	assert_se((m = sd_netlink_message_unref(m)) == NULL);
	124	assert_se((r = sd_netlink_message_unref(r)) == NULL);
	125
	126	}
	127
05d0c2e3	128	static void test_route(sd_netlink *rtnl) {
4afd3348	129	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req;
1c4baffc TG	130	struct in_addr addr, addr_data;
	131	uint32_t index = 2, u32_data;
	132	int r;
	133
05d0c2e3	134	r = sd_rtnl_message_new_route(rtnl, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC);
1c4baffc TG	135	if (r < 0) {
	136	log_error_errno(r, "Could not create RTM_NEWROUTE message: %m");
	137	return;
	138	}
	139
	140	addr.s_addr = htonl(INADDR_LOOPBACK);
	141
	142	r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &addr);
	143	if (r < 0) {
	144	log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
	145	return;
	146	}
	147
	148	r = sd_netlink_message_append_u32(req, RTA_OIF, index);
	149	if (r < 0) {
	150	log_error_errno(r, "Could not append RTA_OIF attribute: %m");
	151	return;
	152	}
	153
	154	assert_se(sd_netlink_message_rewind(req) >= 0);
	155
	156	assert_se(sd_netlink_message_read_in_addr(req, RTA_GATEWAY, &addr_data) >= 0);
	157	assert_se(addr_data.s_addr == addr.s_addr);
	158
	159	assert_se(sd_netlink_message_read_u32(req, RTA_OIF, &u32_data) >= 0);
	160	assert_se(u32_data == index);
	161
	162	assert_se((req = sd_netlink_message_unref(req)) == NULL);
	163	}
	164
	165	static void test_multiple(void) {
	166	sd_netlink rtnl1, rtnl2;
	167
	168	assert_se(sd_netlink_open(&rtnl1) >= 0);
	169	assert_se(sd_netlink_open(&rtnl2) >= 0);
	170
	171	rtnl1 = sd_netlink_unref(rtnl1);
	172	rtnl2 = sd_netlink_unref(rtnl2);
	173	}
	174
	175	static int link_handler(sd_netlink rtnl, sd_netlink_message m, void *userdata) {
	176	char *ifname = userdata;
	177	const char *data;
	178
	179	assert_se(rtnl);
	180	assert_se(m);
0d0f02cd	181	assert_se(userdata);
1c4baffc	182
0d0f02cd	183	log_info("%s: got link info about %s", __func__, ifname);
1c4baffc TG	184	free(ifname);
	185
	186	assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
	187	assert_se(streq(data, "lo"));
	188
	189	return 1;
	190	}
	191
	192	static void test_event_loop(int ifindex) {
4afd3348 LP	193	_cleanup_(sd_event_unrefp) sd_event *event = NULL;
	194	_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
	195	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
1c4baffc TG	196	char *ifname;
	197
	198	ifname = strdup("lo2");
	199	assert_se(ifname);
	200
	201	assert_se(sd_netlink_open(&rtnl) >= 0);
	202	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
	203
8190a388	204	assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler, NULL, ifname, 0, NULL) >= 0);
1c4baffc TG	205
	206	assert_se(sd_event_default(&event) >= 0);
	207
	208	assert_se(sd_netlink_attach_event(rtnl, event, 0) >= 0);
	209
	210	assert_se(sd_event_run(event, 0) >= 0);
	211
	212	assert_se(sd_netlink_detach_event(rtnl) >= 0);
	213
	214	assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
	215	}
	216
0d0f02cd YW	217	static void test_async(int ifindex) {
	218	_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
	219	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message m = NULL, r = NULL;
ee38400b	220	_cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
0d0f02cd	221	char *ifname;
1c4baffc	222
0d0f02cd YW	223	ifname = strdup("lo");
0d0f02cd YW	224	assert_se(ifname);
1c4baffc	225
0d0f02cd	226	assert_se(sd_netlink_open(&rtnl) >= 0);
1c4baffc	227
0d0f02cd	228	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
1c4baffc	229
8190a388	230	assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler, NULL, ifname, 0, NULL) >= 0);
0d0f02cd YW	231
	232	assert_se(sd_netlink_wait(rtnl, 0) >= 0);
	233	assert_se(sd_netlink_process(rtnl, &r) >= 0);
	234
	235	assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
	236	}
	237
	238	struct test_async_object {
	239	unsigned n_ref;
	240	char *ifname;
	241	};
	242
	243	static struct test_async_object test_async_object_free(struct test_async_object t) {
	244	assert(t);
	245
	246	free(t->ifname);
	247	return mfree(t);
	248	}
	249
	250	DEFINE_PRIVATE_TRIVIAL_REF_UNREF_FUNC(struct test_async_object, test_async_object, test_async_object_free);
	251	DEFINE_TRIVIAL_CLEANUP_FUNC(struct test_async_object *, test_async_object_unref);
	252
	253	static int link_handler2(sd_netlink rtnl, sd_netlink_message m, void *userdata) {
	254	struct test_async_object *t = userdata;
	255	const char *data;
	256
	257	assert_se(rtnl);
	258	assert_se(m);
	259	assert_se(userdata);
	260
	261	log_info("%s: got link info about %s", __func__, t->ifname);
	262
	263	assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
	264	assert_se(streq(data, "lo"));
1c4baffc TG	265
	266	return 1;
	267	}
	268
0d0f02cd YW	269	static void test_async_object_destroy(void *userdata) {
	270	struct test_async_object *t = userdata;
	271
	272	assert(userdata);
	273
	274	log_info("%s: n_ref=%u", __func__, t->n_ref);
	275	test_async_object_unref(t);
	276	}
	277
	278	static void test_async_destroy_callback(int ifindex) {
4afd3348 LP	279	_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
4afd3348 LP	280	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message m = NULL, r = NULL;
0d0f02cd	281	_cleanup_(test_async_object_unrefp) struct test_async_object *t = NULL;
ee38400b	282	_cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
1c4baffc TG	283	char *ifname;
1c4baffc TG	284
0d0f02cd YW	285	assert_se(t = new(struct test_async_object, 1));
	286	assert_se(ifname = strdup("lo"));
	287	*t = (struct test_async_object) {
	288	.n_ref = 1,
	289	.ifname = ifname,
	290	};
1c4baffc TG	291
	292	assert_se(sd_netlink_open(&rtnl) >= 0);
	293
0d0f02cd	294	/* destroy callback is called after processing message */
1c4baffc	295	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
8190a388	296	assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);
1c4baffc	297
0d0f02cd YW	298	assert_se(t->n_ref == 1);
	299	assert_se(test_async_object_ref(t));
	300	assert_se(t->n_ref == 2);
1c4baffc TG	301
1c4baffc TG	302	assert_se(sd_netlink_wait(rtnl, 0) >= 0);
0d0f02cd YW	303	assert_se(sd_netlink_process(rtnl, &r) == 1);
	304	assert_se(t->n_ref == 1);
	305
	306	assert_se(!sd_netlink_message_unref(m));
	307
ee38400b	308	/* destroy callback is called when asynchronous call is cancelled, that is, slot is freed. */
0d0f02cd	309	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
8190a388	310	assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);
0d0f02cd YW	311
	312	assert_se(t->n_ref == 1);
	313	assert_se(test_async_object_ref(t));
	314	assert_se(t->n_ref == 2);
	315
ee38400b	316	assert_se(!(slot = sd_netlink_slot_unref(slot)));
0d0f02cd YW	317	assert_se(t->n_ref == 1);
	318
	319	assert_se(!sd_netlink_message_unref(m));
	320
	321	/* destroy callback is also called by sd_netlink_unref() */
	322	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
8190a388	323	assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);
0d0f02cd YW	324
	325	assert_se(t->n_ref == 1);
	326	assert_se(test_async_object_ref(t));
	327	assert_se(t->n_ref == 2);
1c4baffc TG	328
1c4baffc TG	329	assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
0d0f02cd YW	330	assert_se(t->n_ref == 1);
	331	}
	332
	333	static int pipe_handler(sd_netlink rtnl, sd_netlink_message m, void *userdata) {
	334	int *counter = userdata;
	335	int r;
	336
	337	(*counter)--;
	338
	339	r = sd_netlink_message_get_errno(m);
	340
	341	log_info_errno(r, "%d left in pipe. got reply: %m", *counter);
	342
	343	assert_se(r >= 0);
	344
	345	return 1;
1c4baffc TG	346	}
	347
	348	static void test_pipe(int ifindex) {
4afd3348 LP	349	_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
4afd3348 LP	350	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message m1 = NULL, m2 = NULL;
1c4baffc TG	351	int counter = 0;
	352
	353	assert_se(sd_netlink_open(&rtnl) >= 0);
	354
	355	assert_se(sd_rtnl_message_new_link(rtnl, &m1, RTM_GETLINK, ifindex) >= 0);
	356	assert_se(sd_rtnl_message_new_link(rtnl, &m2, RTM_GETLINK, ifindex) >= 0);
	357
313cefa1	358	counter++;
8190a388	359	assert_se(sd_netlink_call_async(rtnl, NULL, m1, pipe_handler, NULL, &counter, 0, NULL) >= 0);
1c4baffc	360
313cefa1	361	counter++;
8190a388	362	assert_se(sd_netlink_call_async(rtnl, NULL, m2, pipe_handler, NULL, &counter, 0, NULL) >= 0);
1c4baffc TG	363
	364	while (counter > 0) {
	365	assert_se(sd_netlink_wait(rtnl, 0) >= 0);
	366	assert_se(sd_netlink_process(rtnl, NULL) >= 0);
	367	}
	368
	369	assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
	370	}
	371
05d0c2e3	372	static void test_container(sd_netlink *rtnl) {
4afd3348	373	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
1c4baffc TG	374	uint16_t u16_data;
	375	uint32_t u32_data;
	376	const char *string_data;
	377
05d0c2e3	378	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
1c4baffc TG	379
	380	assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
	381	assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "vlan") >= 0);
	382	assert_se(sd_netlink_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0);
	383	assert_se(sd_netlink_message_close_container(m) >= 0);
	384	assert_se(sd_netlink_message_append_string(m, IFLA_INFO_KIND, "vlan") >= 0);
	385	assert_se(sd_netlink_message_close_container(m) >= 0);
	386	assert_se(sd_netlink_message_close_container(m) == -EINVAL);
	387
	388	assert_se(sd_netlink_message_rewind(m) >= 0);
	389
	390	assert_se(sd_netlink_message_enter_container(m, IFLA_LINKINFO) >= 0);
	391	assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
	392	assert_se(streq("vlan", string_data));
	393
	394	assert_se(sd_netlink_message_enter_container(m, IFLA_INFO_DATA) >= 0);
	395	assert_se(sd_netlink_message_read_u16(m, IFLA_VLAN_ID, &u16_data) >= 0);
	396	assert_se(sd_netlink_message_exit_container(m) >= 0);
	397
	398	assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
	399	assert_se(streq("vlan", string_data));
	400	assert_se(sd_netlink_message_exit_container(m) >= 0);
	401
	402	assert_se(sd_netlink_message_read_u32(m, IFLA_LINKINFO, &u32_data) < 0);
	403
	404	assert_se(sd_netlink_message_exit_container(m) == -EINVAL);
	405	}
	406
	407	static void test_match(void) {
ee38400b	408	_cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot s1 = NULL, s2 = NULL;
4afd3348	409	_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
1c4baffc TG	410
	411	assert_se(sd_netlink_open(&rtnl) >= 0);
	412
8190a388 YW	413	assert_se(sd_netlink_add_match(rtnl, &s1, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
	414	assert_se(sd_netlink_add_match(rtnl, &s2, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
	415	assert_se(sd_netlink_add_match(rtnl, NULL, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
1c4baffc	416
ee38400b YW	417	assert_se(!(s1 = sd_netlink_slot_unref(s1)));
ee38400b YW	418	assert_se(!(s2 = sd_netlink_slot_unref(s2)));
1c4baffc TG	419
	420	assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
	421	}
	422
	423	static void test_get_addresses(sd_netlink *rtnl) {
4afd3348	424	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message req = NULL, reply = NULL;
1c4baffc TG	425	sd_netlink_message *m;
	426
	427	assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0);
	428
	429	assert_se(sd_netlink_call(rtnl, req, 0, &reply) >= 0);
	430
	431	for (m = reply; m; m = sd_netlink_message_next(m)) {
	432	uint16_t type;
	433	unsigned char scope, flags;
	434	int family, ifindex;
	435
	436	assert_se(sd_netlink_message_get_type(m, &type) >= 0);
	437	assert_se(type == RTM_NEWADDR);
	438
	439	assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0);
	440	assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0);
	441	assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0);
	442	assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0);
	443
	444	assert_se(ifindex > 0);
945c2931	445	assert_se(IN_SET(family, AF_INET, AF_INET6));
1c4baffc TG	446
	447	log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex);
	448	}
	449	}
	450
05d0c2e3	451	static void test_message(sd_netlink *rtnl) {
4afd3348	452	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
1c4baffc	453
05d0c2e3	454	assert_se(rtnl_message_new_synthetic_error(rtnl, -ETIMEDOUT, 1, &m) >= 0);
1c4baffc TG	455	assert_se(sd_netlink_message_get_errno(m) == -ETIMEDOUT);
	456	}
	457
	458	int main(void) {
	459	sd_netlink *rtnl;
	460	sd_netlink_message *m;
	461	sd_netlink_message *r;
	462	const char *string_data;
	463	int if_loopback;
	464	uint16_t type;
	465
1c4baffc	466	test_match();
1c4baffc TG	467	test_multiple();
1c4baffc TG	468
1c4baffc TG	469	assert_se(sd_netlink_open(&rtnl) >= 0);
	470	assert_se(rtnl);
	471
05d0c2e3	472	test_route(rtnl);
05d0c2e3	473	test_message(rtnl);
05d0c2e3 JT	474	test_container(rtnl);
05d0c2e3 JT	475
1c4baffc TG	476	if_loopback = (int) if_nametoindex("lo");
	477	assert_se(if_loopback > 0);
	478
	479	test_async(if_loopback);
0d0f02cd	480	test_async_destroy_callback(if_loopback);
1c4baffc	481	test_pipe(if_loopback);
1c4baffc	482	test_event_loop(if_loopback);
1c4baffc TG	483	test_link_configure(rtnl, if_loopback);
	484
	485	test_get_addresses(rtnl);
1c4baffc TG	486	test_message_link_bridge(rtnl);
	487
	488	assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, if_loopback) >= 0);
	489	assert_se(m);
	490
	491	assert_se(sd_netlink_message_get_type(m, &type) >= 0);
	492	assert_se(type == RTM_GETLINK);
	493
	494	assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &string_data) == -EPERM);
	495
	496	assert_se(sd_netlink_call(rtnl, m, 0, &r) == 1);
	497	assert_se(sd_netlink_message_get_type(r, &type) >= 0);
	498	assert_se(type == RTM_NEWLINK);
	499
	500	assert_se((r = sd_netlink_message_unref(r)) == NULL);
	501
	502	assert_se(sd_netlink_call(rtnl, m, -1, &r) == -EPERM);
	503	assert_se((m = sd_netlink_message_unref(m)) == NULL);
	504	assert_se((r = sd_netlink_message_unref(r)) == NULL);
	505
	506	test_link_get(rtnl, if_loopback);
	507	test_address_get(rtnl, if_loopback);
	508
1c4baffc TG	509	assert_se((m = sd_netlink_message_unref(m)) == NULL);
	510	assert_se((r = sd_netlink_message_unref(r)) == NULL);
	511	assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
	512
	513	return EXIT_SUCCESS;
	514	}