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, 20 insertions, 0 deletions

diff --git a/c_src/include/asm/unaligned.h b/c_src/include/asm/unaligned.h
new file mode 100644
index 00000000..e695bede
--- /dev/null
+++ b/c_src/include/asm/unaligned.h
@@ -0,0 +1,20 @@
+#ifndef _ASM_UNALIGNED_H
+#define _ASM_UNALIGNED_H
+
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+# include <linux/unaligned/le_struct.h>
+# include <linux/unaligned/be_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned	__get_unaligned_le
+# define put_unaligned	__put_unaligned_le
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+# include <linux/unaligned/be_struct.h>
+# include <linux/unaligned/le_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned	__get_unaligned_be
+# define put_unaligned	__put_unaligned_be
+#else
+# error need to define endianess
+#endif
+
+#endif /* _ASM_UNALIGNED_H */