-int mmap_fdt(char *cmdname, const char *fname, void **blobp,
- struct stat *sbuf, int useunlink);
+/**
+ * Map an FDT into memory, optionally increasing its size
+ *
+ * @cmdname: Tool name (for displaying with error messages)
+ * @fname: Filename containing FDT
+ * @size_inc: Amount to increase size by (0 = leave it alone)
+ * @blobp: Returns pointer to FDT blob
+ * @sbuf: File status information is stored here
+ * @delete_on_error: true to delete the file if we get an error
+ * @return 0 if OK, -1 on error.
+ */
+int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc,
+ void **blobp, struct stat *sbuf, bool delete_on_error);