lapi/loop.h: Add fallback for loop ioctl and flag

Signed-off-by: Yang Xu <[email protected]>
Reviewed-by: Cyril Hrubis <[email protected]>

Author: xuyang0410

include/lapi/loop.h

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 FUJITSU LIMITED. All rights reserved.
+ * Author: Yang Xu <[email protected]>
+ */
+#ifndef LAPI_LOOP_H
+#define LAPI_LOOP_H
+
+#include <linux/types.h>
+#include <linux/loop.h>
+
+#ifndef LO_FLAGS_PARTSCAN
+# define LO_FLAGS_PARTSCAN 8
+#endif
+
+#ifndef LO_FLAGS_DIRECT_IO
+# define LO_FLAGS_DIRECT_IO 16
+#endif
+
+#ifndef LOOP_SET_CAPACITY
+# define LOOP_SET_CAPACITY 0x4C07
+#endif
+
+#ifndef LOOP_SET_DIRECT_IO
+# define LOOP_SET_DIRECT_IO 0x4C08
+#endif
+
+#ifndef LOOP_SET_BLOCK_SIZE
+# define LOOP_SET_BLOCK_SIZE 0x4C09
+#endif
+
+#endif