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-rw-r--r--include/linux/ioctl32.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/ioctl32.h b/include/linux/ioctl32.h
new file mode 100644
index 00000000000..e1a64181942
--- /dev/null
+++ b/include/linux/ioctl32.h
@@ -0,0 +1,37 @@
+#ifndef IOCTL32_H
+#define IOCTL32_H 1
+
+struct file;
+
+typedef int (*ioctl_trans_handler_t)(unsigned int, unsigned int,
+ unsigned long, struct file *);
+
+struct ioctl_trans {
+ unsigned long cmd;
+ ioctl_trans_handler_t handler;
+ struct ioctl_trans *next;
+};
+
+/*
+ * Register an 32bit ioctl translation handler for ioctl cmd.
+ *
+ * handler == NULL: use 64bit ioctl handler.
+ * arguments to handler: fd: file descriptor
+ * cmd: ioctl command.
+ * arg: ioctl argument
+ * struct file *file: file descriptor pointer.
+ */
+
+#ifdef CONFIG_COMPAT
+extern int register_ioctl32_conversion(unsigned int cmd,
+ ioctl_trans_handler_t handler);
+extern int unregister_ioctl32_conversion(unsigned int cmd);
+
+#else
+
+#define register_ioctl32_conversion(cmd, handler) ({ 0; })
+#define unregister_ioctl32_conversion(cmd) ({ 0; })
+
+#endif
+
+#endif