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, 87 insertions, 0 deletions

diff --git a/c_src/include/linux/types.h b/c_src/include/linux/types.h
new file mode 100644
index 00000000..ce454e26
--- /dev/null
+++ b/c_src/include/linux/types.h
@@ -0,0 +1,87 @@
+#ifndef _TOOLS_LINUX_TYPES_H_
+#define _TOOLS_LINUX_TYPES_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#define __SANE_USERSPACE_TYPES__	/* For PPC64, to get LL64 types */
+#include <asm/types.h>
+
+#include <linux/cache.h>
+
+#define BITS_PER_LONG	__BITS_PER_LONG
+
+struct page;
+struct kmem_cache;
+
+typedef unsigned long		pgoff_t;
+
+typedef unsigned short		umode_t;
+
+typedef unsigned gfp_t;
+
+#define GFP_ATOMIC	0
+#define GFP_NOFS	0
+#define GFP_NOIO	0
+#define GFP_NOWAIT	0
+#define __GFP_FS	0
+#define __GFP_IO	0
+#define __GFP_NOWARN	0
+#define __GFP_NORETRY	0
+#define __GFP_NOFAIL	0
+#define __GFP_ZERO	1
+#define GFP_KERNEL	2
+
+#define PAGE_ALLOC_COSTLY_ORDER	6
+
+typedef __u64 u64;
+typedef __s64 s64;
+typedef __u32 u32;
+typedef __s32 s32;
+typedef __u16 u16;
+typedef __s16 s16;
+typedef __u8  u8;
+typedef __s8  s8;
+
+#ifdef __CHECKER__
+#define __bitwise__ __attribute__((bitwise))
+#else
+#define __bitwise__
+#endif
+#ifdef __CHECK_ENDIAN__
+#define __bitwise __bitwise__
+#else
+#define __bitwise
+#endif
+
+#define __force
+#define __user
+#define __must_check
+#define __cold
+
+typedef __u16 __bitwise __le16;
+typedef __u16 __bitwise __be16;
+typedef __u32 __bitwise __le32;
+typedef __u32 __bitwise __be32;
+typedef __u64 __bitwise __le64;
+typedef __u64 __bitwise __be64;
+
+#ifndef __aligned_u64
+# define __aligned_u64 __u64 __attribute__((aligned(8)))
+#endif
+
+typedef u64 sector_t;
+
+typedef int (*cmp_func_t)(const void *a, const void *b);
+
+typedef unsigned int __bitwise slab_flags_t;
+typedef u64 phys_addr_t;
+struct vm_struct;
+struct mnt_idmap;
+
+#endif /* _TOOLS_LINUX_TYPES_H_ */