Merge branch 'permissions-create-keys' into 'master'

Update the keys permission check to open the file in write mode.

That way the file is created if it does not exist.

This will help simplify the check being running from omnibus. Currently we create the authorized_keys, file in omnibus. We want to instead have omnibus call check-permissions as the git user, to get around nfs root_squash issues with the authorized_keys file.

See merge request !83

lib/gitlab_keys.rb

@@ -106,7 +106,7 @@ class GitlabKeys
   end
 
   def check_permissions
-    open_auth_file('r+') { true }
+    open_auth_file(File::RDWR | File::CREAT) { true }
   rescue => ex
     puts "error: could not open #{auth_file}: #{ex}"
     if File.exist?(auth_file)

spec/gitlab_keys_spec.rb

@@ -183,6 +183,13 @@ describe GitlabKeys do
       gitlab_keys.should_receive(:open_auth_file).and_raise("imaginary error")
       expect(gitlab_keys.exec).to eq(false)
     end
+
+    it 'creates the keys file if it does not exist' do
+      create_authorized_keys_fixture
+      FileUtils.rm(tmp_authorized_keys_path)
+      expect(gitlab_keys.exec).to eq(true)
+      expect(File.exist?(tmp_authorized_keys_path)).to eq(true)
+    end
   end
 
   describe :exec do