initrd: set multi-connect=single for connections with static IPbg/initrd-fixes

We don't want to have multiple devices up with the same static IP. Set
multi-connect=single.

2 files changed, 52 insertions, 2 deletions

diff --git a/src/core/initrd/nmi-cmdline-reader.c b/src/core/initrd/nmi-cmdline-reader.c
index 958315aa35..15b4af7b70 100644
--- a/src/core/initrd/nmi-cmdline-reader.c
+++ b/src/core/initrd/nmi-cmdline-reader.c
@@ -393,8 +393,9 @@ reader_read_all_connections_from_fw(Reader *reader, const char *sysfs_dir)
 static void
 reader_parse_ip(Reader *reader, const char *sysfs_dir, char *argument)
 {
-    NMConnection *     connection;
-    NMSettingIPConfig *s_ip4 = NULL, *s_ip6 = NULL;
+    NMConnection *       connection;
+    NMSettingConnection *s_con;
+    NMSettingIPConfig *  s_ip4 = NULL, *s_ip6 = NULL;
     gs_unref_hashtable GHashTable *ibft = NULL;
     const char *                   tmp;
     const char *                   tmp2;
@@ -501,6 +502,7 @@ reader_parse_ip(Reader *reader, const char *sysfs_dir, char *argument)
 
     g_hash_table_add(reader->explicit_ip_connections, g_object_ref(connection));
 
+    s_con = nm_connection_get_setting_connection(connection);
     s_ip4 = nm_connection_get_setting_ip4_config(connection);
     s_ip6 = nm_connection_get_setting_ip6_config(connection);
 
@@ -550,6 +552,12 @@ reader_parse_ip(Reader *reader, const char *sysfs_dir, char *argument)
             nm_assert_not_reached();
 
         if (address) {
+            /* We don't want to have multiple devices up with the
+             * same static address. */
+            g_object_set(s_con,
+                         NM_SETTING_CONNECTION_MULTI_CONNECT,
+                         NM_CONNECTION_MULTI_CONNECT_SINGLE,
+                         NULL);
             switch (client_ip_family) {
             case AF_INET:
                 g_object_set(s_ip4,
diff --git a/src/core/initrd/tests/test-cmdline-reader.c b/src/core/initrd/tests/test-cmdline-reader.c
index f51134357e..1ce892c0ca 100644
--- a/src/core/initrd/tests/test-cmdline-reader.c
+++ b/src/core/initrd/tests/test-cmdline-reader.c
@@ -456,6 +456,47 @@ test_if_ip4_manual(void)
 }
 
 static void
+test_if_ip4_manual_no_dev(void)
+{
+    gs_unref_hashtable GHashTable *connections = NULL;
+    const char *const *            ARGV        = NM_MAKE_STRV("ip=192.0.2.2::192.0.2.1:24:::");
+    NMConnection *                 connection;
+    NMSettingConnection *          s_con;
+    NMSettingIPConfig *            s_ip4;
+    NMSettingIPConfig *            s_ip6;
+    NMIPAddress *                  ip_addr;
+
+    connection = _parse_con(ARGV, "default_connection");
+    g_assert_cmpstr(nm_connection_get_id(connection), ==, "Wired Connection");
+
+    s_con = nm_connection_get_setting_connection(connection);
+    g_assert(s_con);
+    g_assert_cmpint(nm_setting_connection_get_wait_device_timeout(s_con), ==, -1);
+    g_assert_cmpint(nm_setting_connection_get_multi_connect(s_con),
+                    ==,
+                    NM_CONNECTION_MULTI_CONNECT_SINGLE);
+
+    s_ip4 = nm_connection_get_setting_ip4_config(connection);
+    g_assert(s_ip4);
+    g_assert_cmpstr(nm_setting_ip_config_get_method(s_ip4),
+                    ==,
+                    NM_SETTING_IP4_CONFIG_METHOD_MANUAL);
+    g_assert(!nm_setting_ip_config_get_ignore_auto_dns(s_ip4));
+    g_assert_cmpint(nm_setting_ip_config_get_num_routes(s_ip4), ==, 0);
+    g_assert_cmpint(nm_setting_ip_config_get_num_addresses(s_ip4), ==, 1);
+    ip_addr = nm_setting_ip_config_get_address(s_ip4, 0);
+    g_assert(ip_addr);
+    g_assert_cmpstr(nm_ip_address_get_address(ip_addr), ==, "192.0.2.2");
+    g_assert_cmpint(nm_ip_address_get_prefix(ip_addr), ==, 24);
+    g_assert_cmpstr(nm_setting_ip_config_get_gateway(s_ip4), ==, "192.0.2.1");
+
+    s_ip6 = nm_connection_get_setting_ip6_config(connection);
+    g_assert(s_ip6);
+    g_assert_cmpstr(nm_setting_ip_config_get_method(s_ip6), ==, NM_SETTING_IP6_CONFIG_METHOD_AUTO);
+    g_assert(nm_setting_ip_config_get_may_fail(s_ip6));
+}
+
+static void
 test_if_ip6_manual(void)
 {
     gs_unref_hashtable GHashTable *connections = NULL;
@@ -2123,6 +2164,7 @@ main(int argc, char **argv)
     g_test_add_func("/initrd/cmdline/if_dhcp6", test_if_dhcp6);
     g_test_add_func("/initrd/cmdline/if_auto_with_mtu_and_mac", test_if_auto_with_mtu_and_mac);
     g_test_add_func("/initrd/cmdline/if_ip4_manual", test_if_ip4_manual);
+    g_test_add_func("/initrd/cmdline/if_ip4_manual_no_dev", test_if_ip4_manual_no_dev);
     g_test_add_func("/initrd/cmdline/if_ip6_manual", test_if_ip6_manual);
     g_test_add_func("/initrd/cmdline/if_mac_ifname", test_if_mac_ifname);
     g_test_add_func("/initrd/cmdline/if_off", test_if_off);