move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 46 insertions, 0 deletions

diff --git a/c_src/include/linux/debugfs.h b/c_src/include/linux/debugfs.h
new file mode 100644
index 00000000..9a78cb16
--- /dev/null
+++ b/c_src/include/linux/debugfs.h
@@ -0,0 +1,46 @@
+/*
+ *  debugfs.h - a tiny little debug file system
+ *
+ *  Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
+ *  Copyright (C) 2004 IBM Inc.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License version
+ *	2 as published by the Free Software Foundation.
+ *
+ *  debugfs is for people to use instead of /proc or /sys.
+ *  See Documentation/DocBook/filesystems for more details.
+ */
+
+#ifndef _DEBUGFS_H_
+#define _DEBUGFS_H_
+
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+#include <linux/types.h>
+#include <linux/compiler.h>
+
+struct file_operations;
+
+#include <linux/err.h>
+
+static inline struct dentry *debugfs_create_file(const char *name, umode_t mode,
+					struct dentry *parent, void *data,
+					const struct file_operations *fops)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+static inline struct dentry *debugfs_create_dir(const char *name,
+						struct dentry *parent)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+static inline void debugfs_remove(struct dentry *dentry)
+{ }
+
+static inline void debugfs_remove_recursive(struct dentry *dentry)
+{ }
+
+#endif