1 files changed, 5 insertions, 16 deletions
diff --git a/oauth2client/file.py b/oauth2client/file.py
index feede11..3551c80 100644
--- a/oauth2client/file.py
+++ b/oauth2client/file.py
@@ -21,16 +21,10 @@ credentials.
 import os
 import threading
 
+from oauth2client import _helpers
 from oauth2client import client
 
 
-__author__ = 'jcgregorio@google.com (Joe Gregorio)'
-
-
-class CredentialsFileSymbolicLinkError(Exception):
-    """Credentials files must not be symbolic links."""
-
-
 class Storage(client.Storage):
     """Store and retrieve a single credential to and from a file."""
 
@@ -38,11 +32,6 @@ class Storage(client.Storage):
         super(Storage, self).__init__(lock=threading.Lock())
         self._filename = filename
 
-    def _validate_file(self):
-        if os.path.islink(self._filename):
-            raise CredentialsFileSymbolicLinkError(
-                'File: {0} is a symbolic link.'.format(self._filename))
-
     def locked_get(self):
         """Retrieve Credential from file.
 
@@ -50,10 +39,10 @@ class Storage(client.Storage):
             oauth2client.client.Credentials
 
         Raises:
-            CredentialsFileSymbolicLinkError if the file is a symbolic link.
+            IOError if the file is a symbolic link.
         """
         credentials = None
-        self._validate_file()
+        _helpers.validate_file(self._filename)
         try:
             f = open(self._filename, 'rb')
             content = f.read()
@@ -89,10 +78,10 @@ class Storage(client.Storage):
             credentials: Credentials, the credentials to store.
 
         Raises:
-            CredentialsFileSymbolicLinkError if the file is a symbolic link.
+            IOError if the file is a symbolic link.
         """
         self._create_file_if_needed()
-        self._validate_file()
+        _helpers.validate_file(self._filename)
         f = open(self._filename, 'w')
         f.write(credentials.to_json())
         f.close()