2 files changed, 11 insertions, 1 deletions
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index ceef309afc..c18e0bdbb8 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 import argparse
+import errno
 import os
 import yaml
 import sys
@@ -91,8 +92,11 @@ class Config(object):
     @classmethod
     def ensure_directory(cls, dir_path):
         dir_path = cls.abspath(dir_path)
-        if not os.path.exists(dir_path):
+        try:
             os.makedirs(dir_path)
+        except OSError, e:
+            if e.errno != errno.EEXIST:
+                raise
         if not os.path.isdir(dir_path):
             raise ConfigError(
                 "%s is not a directory" % (dir_path,)
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index f5ef36a9f4..dca391f7af 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -34,6 +34,7 @@ class RegistrationConfig(Config):
         self.registration_shared_secret = config.get("registration_shared_secret")
         self.macaroon_secret_key = config.get("macaroon_secret_key")
         self.bcrypt_rounds = config.get("bcrypt_rounds", 12)
+        self.allow_guest_access = config.get("allow_guest_access", False)
 
     def default_config(self, **kwargs):
         registration_shared_secret = random_string_with_symbols(50)
@@ -54,6 +55,11 @@ class RegistrationConfig(Config):
         # Larger numbers increase the work factor needed to generate the hash.
         # The default number of rounds is 12.
         bcrypt_rounds: 12
+
+        # Allows users to register as guests without a password/email/etc, and
+        # participate in rooms hosted on this server which have been made
+        # accessible to anonymous users.
+        allow_guest_access: False
         """ % locals()
 
     def add_arguments(self, parser):