1 files changed, 33 insertions, 0 deletions
diff --git a/toolkit/xre/MacRunFromDmgUtils.h b/toolkit/xre/MacRunFromDmgUtils.h
new file mode 100644
index 0000000000..d93e6445b1
--- /dev/null
+++ b/toolkit/xre/MacRunFromDmgUtils.h
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file defines the interface between Cocoa-specific Obj-C++ and generic
+// C++, so it itself cannot have any Obj-C bits in it.
+
+#ifndef MacRunFromDmgUtils_h_
+#define MacRunFromDmgUtils_h_
+
+namespace mozilla::MacRunFromDmgUtils {
+
+/**
+ * Returns true if the app is running from the read-only filesystem of a
+ * mounted .dmg.  Returns false if not, or if we fail to determine whether it
+ * is.
+ */
+bool IsAppRunningFromDmg();
+
+/**
+ * Checks whether the app is running from a read-only .dmg image or a read-only
+ * app translocated location and, if so, asks the user for permission before
+ * attempting to install the app and launch it.
+ *
+ * Returns true if the app has been installed and relaunched, in which case
+ * this instance of the app should exit.
+ */
+bool MaybeInstallAndRelaunch();
+
+}  // namespace mozilla::MacRunFromDmgUtils
+
+#endif