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sd-netlink: add a test for rtnl_set_link_name()

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Add a test that verifies a deleted alternative name is restored on error
in rtnl_set_link_name().

(cherry picked from commit b338a8bb40)
This commit is contained in:
Nick Rosbrook 2022-11-22 17:01:47 -05:00 committed by Luca Boccassi
parent c6722b6975
commit 7299341bd1
1 changed files with 27 additions and 0 deletions
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27
src/libsystemd/sd-netlink/test-netlink.c
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@ -8,6 +8,7 @@
#include <linux/if_macsec.h>
#include <linux/l2tp.h>
#include <linux/nl80211.h>
#include <unistd.h>
#include "sd-netlink.h"
@ -16,6 +17,7 @@
#include "macro.h"
#include "netlink-genl.h"
#include "netlink-internal.h"
#include "netlink-util.h"
#include "socket-util.h"
#include "stdio-util.h"
#include "string-util.h"
@ -667,6 +669,30 @@ static void test_genl(void) {
}
}
static void test_rtnl_set_link_name(sd_netlink *rtnl, int ifindex) {
_cleanup_strv_free_ char **alternative_names = NULL;
int r;
log_debug("/* %s */", __func__);
if (geteuid() != 0)
return (void) log_tests_skipped("not root");
/* Test that the new name (which is currently an alternative name) is
* restored as an alternative name on error. Create an error by using
* an invalid device name, namely one that exceeds IFNAMSIZ
* (alternative names can exceed IFNAMSIZ, but not regular names). */
r = rtnl_set_link_alternative_names(&rtnl, ifindex, STRV_MAKE("testlongalternativename"));
if (r == -EPERM)
return (void) log_tests_skipped("missing required capabilities");
assert_se(r >= 0);
assert_se(rtnl_set_link_name(&rtnl, ifindex, "testlongalternativename") == -EINVAL);
assert_se(rtnl_get_link_alternative_names(&rtnl, ifindex, &alternative_names) >= 0);
assert_se(strv_contains(alternative_names, "testlongalternativename"));
assert_se(rtnl_delete_link_alternative_names(&rtnl, ifindex, STRV_MAKE("testlongalternativename")) >= 0);
}
int main(void) {
sd_netlink *rtnl;
sd_netlink_message *m;
@ -698,6 +724,7 @@ int main(void) {
test_pipe(if_loopback);
test_event_loop(if_loopback);
test_link_configure(rtnl, if_loopback);
test_rtnl_set_link_name(rtnl, if_loopback);
test_get_addresses(rtnl);
test_message_link_bridge(rtnl);