1 files changed, 1 insertions, 0 deletions
diff --git a/src/basic/virt.h b/src/basic/virt.h
index bc5b3ae94d..7d15169112 100644
--- a/src/basic/virt.h
+++ b/src/basic/virt.h
@@ -67,6 +67,7 @@ int detect_vm(void);
 int detect_container(void);
 int detect_virtualization(void);
 
+int running_in_userns(void);
 int running_in_chroot(void);
 
 const char *virtualization_to_string(int v) _const_;