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, 27 insertions, 0 deletions

diff --git a/bch_bindgen/src/fs.rs b/bch_bindgen/src/fs.rs
new file mode 100644
index 00000000..b26c51b6
--- /dev/null
+++ b/bch_bindgen/src/fs.rs
@@ -0,0 +1,27 @@
+use std::ffi::CString;
+use std::os::unix::ffi::OsStrExt;
+use std::path::PathBuf;
+use crate::c;
+use crate::errcode::{bch_errcode, errptr_to_result};
+
+pub struct Fs {
+    pub raw: *mut c::bch_fs,
+}
+
+impl Fs {
+    pub fn open(devs: &Vec<PathBuf>, opts: c::bch_opts) -> Result<Fs, bch_errcode> {
+        let devs: Vec<_> = devs.iter()
+            .map(|i| CString::new(i.as_os_str().as_bytes()).unwrap().into_raw())
+            .collect();
+
+        let ret = unsafe { c::bch2_fs_open(devs[..].as_ptr(), devs.len() as u32, opts) };
+
+        errptr_to_result(ret).map(|fs| Fs { raw: fs})
+    }
+}
+
+impl Drop for Fs {
+    fn drop(&mut self) {
+        unsafe { c::bch2_fs_stop(self.raw) }
+    }             
+}