-/* Copied from 2.6.25 kernel headers to avoid problems on older hosts. */
-#ifndef _LINUX_LOOP_H
-#define _LINUX_LOOP_H
+/* Copied from 2.6.25 kernel headers to avoid problems on older hosts,
+ * and subsequently updated to match newer additions to the API.
+ */
+
+#ifndef LINUX_LOOP_H
+#define LINUX_LOOP_H
/*
* include/linux/loop.h
#define LOOP_SET_STATUS64 0x4C04
#define LOOP_GET_STATUS64 0x4C05
#define LOOP_CHANGE_FD 0x4C06
+#define LOOP_SET_CAPACITY 0x4C07
+#define LOOP_SET_DIRECT_IO 0x4C08
+
+/* /dev/loop-control interface */
+#define LOOP_CTL_ADD 0x4C80
+#define LOOP_CTL_REMOVE 0x4C81
+#define LOOP_CTL_GET_FREE 0x4C82
#endif