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-rw-r--r--kernel/include/asm-generic/ioctl.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/include/asm-generic/ioctl.h b/kernel/include/asm-generic/ioctl.h
new file mode 100644
index 000000000..297fb0d7c
--- /dev/null
+++ b/kernel/include/asm-generic/ioctl.h
@@ -0,0 +1,17 @@
+#ifndef _ASM_GENERIC_IOCTL_H
+#define _ASM_GENERIC_IOCTL_H
+
+#include <uapi/asm-generic/ioctl.h>
+
+#ifdef __CHECKER__
+#define _IOC_TYPECHECK(t) (sizeof(t))
+#else
+/* provoke compile error for invalid uses of size argument */
+extern unsigned int __invalid_size_argument_for_IOC;
+#define _IOC_TYPECHECK(t) \
+ ((sizeof(t) == sizeof(t[1]) && \
+ sizeof(t) < (1 << _IOC_SIZEBITS)) ? \
+ sizeof(t) : __invalid_size_argument_for_IOC)
+#endif
+
+#endif /* _ASM_GENERIC_IOCTL_H */