+/**
+ * os_map_file() - Map a file from the host filesystem into memory
+ *
+ * This can be useful when to provide a backing store for an emulated device
+ *
+ * @pathname: File pathname to map
+ * @os_flags: Flags, like OS_O_RDONLY, OS_O_RDWR
+ * @bufp: Returns buffer containing the file
+ * @sizep: Returns size of data
+ * Return: 0 if OK, -ve on error
+ */
+int os_map_file(const char *pathname, int os_flags, void **bufp, int *sizep);
+