From 04cf64afc2e529be5cfc91118b8cf36bc373a277 Mon Sep 17 00:00:00 2001
From: Radek Vykydal <rvykydal@redhat.com>
Date: Mon, 24 Feb 2025 10:53:15 +0100
Subject: [PATCH] network: pass 16-dns-backend.conf to target system

Resolves: RHEL-80233
---
 pyanaconda/modules/network/installation.py    | 14 +++---
 .../modules/network/test_module_network.py    | 44 +++++++++----------
 2 files changed, 30 insertions(+), 28 deletions(-)

diff --git a/pyanaconda/modules/network/installation.py b/pyanaconda/modules/network/installation.py
index 0f62a47b5bb..2f1a0c44794 100644
--- a/pyanaconda/modules/network/installation.py
+++ b/pyanaconda/modules/network/installation.py
@@ -107,8 +107,9 @@ class NetworkInstallationTask(Task):
     SYSTEMD_NETWORK_CONFIG_DIR = "/etc/systemd/network"
     INTERFACE_RENAME_FILE_TEMPLATE = "10-anaconda-ifname-{}.link"
     NM_SYSTEM_CONNECTIONS_DIR_PATH = KEYFILE_DIR
-    NM_GLOBAL_DNS_RUNTIME_CONFIG = "/run/NetworkManager/conf.d/16-global-dns.conf"
-    NM_GLOBAL_DNS_CONFIG = "/etc/NetworkManager/conf.d/16-global-dns.conf"
+    NM_GLOBAL_DNS_RUNTIME_CONFIG_DIR = "/run/NetworkManager/conf.d"
+    NM_GLOBAL_DNS_CONFIG_DIR = "/etc/NetworkManager/conf.d"
+    NM_GLOBAL_DNS_CONFIG_FILES = ("16-global-dns.conf", "16-dns-backend.conf")
     INTERFACE_RENAME_FILE_CONTENT_TEMPLATE = """
 # Generated by Anaconda based on ifname= installer boot option.
 [Match]
@@ -303,10 +304,11 @@ def _copy_global_dns_config(self, root):
         :param root: path to the root of the target system
         :type root: str
         """
-        src = self.NM_GLOBAL_DNS_RUNTIME_CONFIG
-        dst = os.path.normpath(root + self.NM_GLOBAL_DNS_CONFIG)
-        if os.path.isfile(src):
-            shutil.copy(src, dst)
+        for file in self.NM_GLOBAL_DNS_CONFIG_FILES:
+            src = os.path.join(self.NM_GLOBAL_DNS_RUNTIME_CONFIG_DIR, file)
+            dst = os.path.normpath(root + os.path.join(self.NM_GLOBAL_DNS_CONFIG_DIR, file))
+            if os.path.isfile(src):
+                shutil.copy(src, dst)
 
     def _enable_dnsconfd(self, root):
         """Enable dnsconfd service if dnsconfd backend is used."""
diff --git a/tests/unit_tests/pyanaconda_tests/modules/network/test_module_network.py b/tests/unit_tests/pyanaconda_tests/modules/network/test_module_network.py
index cf4e0ebc23b..f9a2dda37ea 100644
--- a/tests/unit_tests/pyanaconda_tests/modules/network/test_module_network.py
+++ b/tests/unit_tests/pyanaconda_tests/modules/network/test_module_network.py
@@ -1184,6 +1184,9 @@ def setUp(self):
         self._nm_syscons_dir = NetworkInstallationTask.NM_SYSTEM_CONNECTIONS_DIR_PATH
         self._systemd_network_dir = NetworkInstallationTask.SYSTEMD_NETWORK_CONFIG_DIR
         self._dhclient_dir = os.path.dirname(NetworkInstallationTask.DHCLIENT_FILE_TEMPLATE)
+        self._nm_dns_runtime_dir = NetworkInstallationTask.NM_GLOBAL_DNS_RUNTIME_CONFIG_DIR
+        self._nm_dns_dir = NetworkInstallationTask.NM_GLOBAL_DNS_CONFIG_DIR
+        self._nm_dns_files = NetworkInstallationTask.NM_GLOBAL_DNS_CONFIG_FILES
 
     def _create_config_dirs(self, installer_dirs, target_system_dirs):
         for config_dir in installer_dirs:
@@ -1232,9 +1235,9 @@ def _mock_task_paths(self, task):
             type(task).NM_SYSTEM_CONNECTIONS_DIR_PATH
         task.DHCLIENT_FILE_TEMPLATE = self._mocked_root + type(task).DHCLIENT_FILE_TEMPLATE
         task.SYSTEMD_NETWORK_CONFIG_DIR = self._mocked_root + type(task).SYSTEMD_NETWORK_CONFIG_DIR
-        task.NM_GLOBAL_DNS_RUNTIME_CONFIG = self._mocked_root + \
-            type(task).NM_GLOBAL_DNS_RUNTIME_CONFIG
-        task.NM_GLOBAL_DNS_CONFIG = self._mocked_root + type(task).NM_GLOBAL_DNS_CONFIG
+        task.NM_GLOBAL_DNS_RUNTIME_CONFIG_DIR = self._mocked_root + \
+            type(task).NM_GLOBAL_DNS_RUNTIME_CONFIG_DIR
+        task.NM_GLOBAL_DNS_CONFIG_DIR = self._mocked_root + type(task).NM_GLOBAL_DNS_CONFIG_DIR
 
     def _create_all_expected_dirs(self):
         # Create directories that are expected to be existing in installer
@@ -1780,27 +1783,23 @@ def test_network_instalation_task_missing_target_dir(self):
     def test_network_instalation_task_global_dns_config(self):
         """Test the task for network installation and global dns configuration."""
 
-        nm_runtime_config_dir, src_file = os.path.split(
-            NetworkInstallationTask.NM_GLOBAL_DNS_RUNTIME_CONFIG)
-        nm_config_dir, dst_file = os.path.split(
-            NetworkInstallationTask.NM_GLOBAL_DNS_CONFIG)
-
         self._create_all_expected_dirs()
 
         self._create_config_dirs(
             installer_dirs=[
-                nm_runtime_config_dir,
-                nm_config_dir,
+                self._nm_dns_runtime_dir,
+                self._nm_dns_dir,
             ],
             target_system_dirs=[
-                nm_config_dir,
+                self._nm_dns_dir,
             ]
         )
 
-        self._dump_config_files(
-            nm_runtime_config_dir,
-            ((src_file, "bla"),)
-        )
+        for file in self._nm_dns_files:
+            self._dump_config_files(
+                self._nm_dns_runtime_dir,
+                ((file, "bla"),)
+            )
 
         # Create the task
         task = NetworkInstallationTask(
@@ -1815,10 +1814,11 @@ def test_network_instalation_task_global_dns_config(self):
         self._mock_task_paths(task)
         task.run()
 
-        self._check_config_file(
-            nm_config_dir,
-            dst_file,
-            """
-            bla
-            """
-        )
+        for file in self._nm_dns_files:
+            self._check_config_file(
+                self._nm_dns_dir,
+                file,
+                """
+                bla
+                """
+            )