Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

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