Better detection of permission denied when reading /etc/awx/settings.py to display appropriate error message.

awx/__init__.py

@@ -80,12 +80,12 @@ def manage():
         sys.stdout.write('%s\n' % __version__)
     # If running as a user without permission to read settings, display an
     # error message.  Allow --help to still work.
-    elif getattr(settings, 'MUST_BE_ROOT_OR_AWX', False):
-        if len(sys.argv) == 1 or len(sys.argv) >= 2 and sys.argv[1] in ('-h', '--help'):
+    elif settings.SECRET_KEY == 'permission-denied':
+        if len(sys.argv) == 1 or len(sys.argv) >= 2 and sys.argv[1] in ('-h', '--help', 'help'):
             execute_from_command_line(sys.argv)
             sys.stdout.write('\n')
         prog = os.path.basename(sys.argv[0])
-        sys.stdout.write('%s must be run as root or awx.\n' % prog)
+        sys.stdout.write('Permission denied: %s must be run as root or awx.\n' % prog)
         sys.exit(1)
     else:
         execute_from_command_line(sys.argv)

awx/settings/production.py

@@ -75,18 +75,24 @@ try:
 except ImportError:
     traceback.print_exc()
     sys.exit(1)
-except IOError, e:
+except IOError:
     from django.core.exceptions import ImproperlyConfigured
     included_file = locals().get('__included_file__', '')
-    if (not included_file or included_file == settings_file) and not os.path.exists(settings_file):
-        if e.errno == errno.EACCES:
-            MUST_BE_ROOT_OR_AWX = True
-        elif 'AWX_SETTINGS_FILE' not in os.environ:
+    if (not included_file or included_file == settings_file):
+        # The import doesn't always give permission denied, so try to open the
+        # settings file directly.
+        try: 
+            e = None
+            open(settings_file)
+        except IOError, e:
+            pass
+        if e and e.errno == errno.EACCES:
+            SECRET_KEY = 'permission-denied'
+            LOGGING = {}
+        else:
             msg = 'No AWX configuration found at %s.' % settings_file
             msg += '\nDefine the AWX_SETTINGS_FILE environment variable to '
             msg += 'specify an alternate path.'
             raise ImproperlyConfigured(msg)
-        else:
-            raise
     else:
         raise