Fixed #24399 -- Made filesystem loaders use more specific exceptions.

django/template/loaders/filesystem.py

@@ -2,6 +2,7 @@
 Wrapper for loading templates from the filesystem.
 """
 
+import errno
 import io
 
 from django.core.exceptions import SuspiciousFileOperation
@@ -37,6 +38,7 @@ class Loader(BaseLoader):
             try:
                 with io.open(filepath, encoding=self.engine.file_charset) as fp:
                     return fp.read(), filepath
-            except IOError:
-                pass
+            except IOError as e:
+                if e.errno != errno.ENOENT:
+                    raise
         raise TemplateDoesNotExist(template_name)

django/views/debug.py

@@ -269,10 +269,6 @@ class ExceptionReporter(object):
     def format_path_status(self, path):
         if not os.path.exists(path):
             return "File does not exist"
-        if not os.path.isfile(path):
-            return "Not a file"
-        if not os.access(path, os.R_OK):
-            return "File is not readable"
         return "File exists"
 
     def get_traceback_data(self):