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-rw-r--r--src/libutil/util.hh9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index bda87bee433e..2689cbd8b412 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -514,4 +514,13 @@ typedef std::function<bool(const Path & path)> PathFilter;
 extern PathFilter defaultPathFilter;
 
 
+/* Save the current mount namespace. Ignored if called more than
+   once. */
+void saveMountNamespace();
+
+/* Restore the mount namespace saved by saveMountNamespace(). Ignored
+   if saveMountNamespace() was never called. */
+void restoreMountNamespace();
+
+
 }