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test-netlink: Gracefully handle the loopback interface being down

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(cherry picked from commit d098b8df6e)
This commit is contained in:
Daan De Meyer 2024-08-18 13:19:30 +02:00
parent b45730389b
commit f6f96b0558
1 changed files with 11 additions and 5 deletions
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16
src/libsystemd/sd-netlink/test-netlink.c
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@ -92,18 +92,24 @@ TEST(message_address) {
struct in_addr in_data;
struct ifa_cacheinfo cache;
const char *label;
int r;
assert_se(sd_netlink_open(&rtnl) >= 0);
ifindex = (int) if_nametoindex("lo");
assert_se(sd_rtnl_message_new_addr(rtnl, &message, RTM_GETADDR, ifindex, AF_INET) >= 0);
assert_se(sd_netlink_message_set_request_dump(message, true) >= 0);
assert_se(sd_netlink_call(rtnl, message, 0, &reply) == 1);
assert_se(sd_netlink_message_read_in_addr(reply, IFA_LOCAL, &in_data) >= 0);
assert_se(sd_netlink_message_read_in_addr(reply, IFA_ADDRESS, &in_data) >= 0);
assert_se(sd_netlink_message_read_string(reply, IFA_LABEL, &label) >= 0);
assert_se(sd_netlink_message_read_cache_info(reply, IFA_CACHEINFO, &cache) == 0);
r = sd_netlink_call(rtnl, message, 0, &reply);
assert_se(r >= 0);
/* If the loopback device is down we won't get any results. */
if (r > 0) {
assert_se(sd_netlink_message_read_in_addr(reply, IFA_LOCAL, &in_data) >= 0);
assert_se(sd_netlink_message_read_in_addr(reply, IFA_ADDRESS, &in_data) >= 0);
assert_se(sd_netlink_message_read_string(reply, IFA_LABEL, &label) >= 0);
assert_se(sd_netlink_message_read_cache_info(reply, IFA_CACHEINFO, &cache) == 0);
}
}
TEST(message_route) {