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, 50 insertions, 0 deletions

diff --git a/c_src/libbcachefs/xattr.h b/c_src/libbcachefs/xattr.h
new file mode 100644
index 00000000..1337f31a
--- /dev/null
+++ b/c_src/libbcachefs/xattr.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_XATTR_H
+#define _BCACHEFS_XATTR_H
+
+#include "str_hash.h"
+
+extern const struct bch_hash_desc bch2_xattr_hash_desc;
+
+int bch2_xattr_invalid(struct bch_fs *, struct bkey_s_c,
+		       enum bkey_invalid_flags, struct printbuf *);
+void bch2_xattr_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
+
+#define bch2_bkey_ops_xattr ((struct bkey_ops) {	\
+	.key_invalid	= bch2_xattr_invalid,		\
+	.val_to_text	= bch2_xattr_to_text,		\
+	.min_val_size	= 8,				\
+})
+
+static inline unsigned xattr_val_u64s(unsigned name_len, unsigned val_len)
+{
+	return DIV_ROUND_UP(offsetof(struct bch_xattr, x_name) +
+			    name_len + val_len, sizeof(u64));
+}
+
+#define xattr_val(_xattr)					\
+	((void *) (_xattr)->x_name + (_xattr)->x_name_len)
+
+struct xattr_search_key {
+	u8		type;
+	struct qstr	name;
+};
+
+#define X_SEARCH(_type, _name, _len) ((struct xattr_search_key)	\
+	{ .type = _type, .name = QSTR_INIT(_name, _len) })
+
+struct dentry;
+struct xattr_handler;
+struct bch_hash_info;
+struct bch_inode_info;
+
+/* Exported for cmd_migrate.c in tools: */
+int bch2_xattr_set(struct btree_trans *, subvol_inum,
+		   struct bch_inode_unpacked *, const struct bch_hash_info *,
+		   const char *, const void *, size_t, int, int);
+
+ssize_t bch2_xattr_list(struct dentry *, char *, size_t);
+
+extern const struct xattr_handler *bch2_xattr_handlers[];
+
+#endif /* _BCACHEFS_XATTR_H */