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, 18 insertions, 0 deletions

diff --git a/c_src/include/linux/zlib.h b/c_src/include/linux/zlib.h
new file mode 100644
index 00000000..45cfbd87
--- /dev/null
+++ b/c_src/include/linux/zlib.h
@@ -0,0 +1,18 @@
+#ifndef _ZLIB_H
+#define _ZLIB_H
+
+#include <zlib.h>
+
+#define zlib_inflate_workspacesize()		0
+#define zlib_deflate_workspacesize(windowBits, memLevel)	0
+
+#define zlib_inflateInit2	inflateInit2
+#define zlib_inflate		inflate
+
+#define zlib_deflateInit2	deflateInit2
+#define zlib_deflate		deflate
+#define zlib_deflateEnd		deflateEnd
+
+#define DEF_MEM_LEVEL 8
+
+#endif /* _ZLIB_H */