1 files changed, 16 insertions, 1 deletions
diff --git a/lib/gitlab/git_access_wiki.rb b/lib/gitlab/git_access_wiki.rb
index 1fe5155c093..a5b3902ebf4 100644
--- a/lib/gitlab/git_access_wiki.rb
+++ b/lib/gitlab/git_access_wiki.rb
@@ -1,6 +1,7 @@
 module Gitlab
   class GitAccessWiki < GitAccess
     ERROR_MESSAGES = {
+      read_only:     "You can't push code to a read-only GitLab instance.",
       write_to_wiki: "You are not allowed to write to this project's wiki."
     }.freeze
 
@@ -12,12 +13,26 @@ module Gitlab
       authentication_abilities.include?(:download_code) && user_access.can_do_action?(:download_wiki_code)
     end
 
-    def check_single_change_access(change)
+    def check_single_change_access(change, _options = {})
       unless user_access.can_do_action?(:create_wiki)
         raise UnauthorizedError, ERROR_MESSAGES[:write_to_wiki]
       end
 
+      if Gitlab::Database.read_only?
+        raise UnauthorizedError, push_to_read_only_message
+      end
+
       true
     end
+
+    def push_to_read_only_message
+      ERROR_MESSAGES[:read_only]
+    end
+
+    private
+
+    def repository
+      project.wiki.repository
+    end
   end
 end