lineinfile - don't run os.makedirs on empty dir path (#63921) (#64090)

* Fix #63919: don't run os.makedirs on empty dir path

* integration test for lineinfile create: yes without path

(cherry picked from commit 3c978a3225)

changelogs/fragments/63919-lineinfile-create-no-dir-path.yml

@@ -0,0 +1,2 @@
+bugfixes:
+ - "lineinfile - don't attempt mkdirs when path doesn't contain directory path"

lib/ansible/modules/files/lineinfile.py

@@ -259,7 +259,7 @@ def present(module, dest, regexp, line, insertafter, insertbefore, create,
         if not create:
             module.fail_json(rc=257, msg='Destination %s does not exist !' % dest)
         b_destpath = os.path.dirname(b_dest)
-        if not os.path.exists(b_destpath) and not module.check_mode:
+        if b_destpath and not os.path.exists(b_destpath) and not module.check_mode:
             try:
                 os.makedirs(b_destpath)
             except Exception as e:

test/integration/targets/lineinfile/tasks/main.yml

@@ -279,6 +279,24 @@
     that:
       - "result.stat.checksum == '038f10f9e31202451b093163e81e06fbac0c6f3a'"
 
+- name: Create a file without a path
+  lineinfile:
+    dest: file.txt
+    create: yes
+    line: Test line
+  register: create_no_path_test
+
+- name: Stat the file
+  stat:
+    path: file.txt
+  register: create_no_path_file
+
+- name: Ensure file was created
+  assert:
+    that:
+      - create_no_path_test is changed
+      - create_no_path_file.stat.exists
+
 # Test EOF in cases where file has no newline at EOF
 - name: testnoeof deploy the file for lineinfile
   copy: