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, 34 insertions, 0 deletions

diff --git a/c_src/include/linux/posix_acl_xattr.h b/c_src/include/linux/posix_acl_xattr.h
new file mode 100644
index 00000000..a8dad160
--- /dev/null
+++ b/c_src/include/linux/posix_acl_xattr.h
@@ -0,0 +1,34 @@
+/*
+  File: linux/posix_acl_xattr.h
+
+  Extended attribute system call representation of Access Control Lists.
+
+  Copyright (C) 2000 by Andreas Gruenbacher <a.gruenbacher@computer.org>
+  Copyright (C) 2002 SGI - Silicon Graphics, Inc <linux-xfs@oss.sgi.com>
+ */
+#ifndef _POSIX_ACL_XATTR_H
+#define _POSIX_ACL_XATTR_H
+
+#include <uapi/linux/xattr.h>
+
+/* Supported ACL a_version fields */
+#define POSIX_ACL_XATTR_VERSION	0x0002
+
+/* An undefined entry e_id value */
+#define ACL_UNDEFINED_ID	(-1)
+
+typedef struct {
+	__le16			e_tag;
+	__le16			e_perm;
+	__le32			e_id;
+} posix_acl_xattr_entry;
+
+typedef struct {
+	__le32			a_version;
+	posix_acl_xattr_entry	a_entries[0];
+} posix_acl_xattr_header;
+
+extern const struct xattr_handler nop_posix_acl_access;
+extern const struct xattr_handler nop_posix_acl_default;
+
+#endif	/* _POSIX_ACL_XATTR_H */