Rust: Start of cmd_list rewrite

This is a _very_ preliminary rewrite of the cmd_list tool in rust, which
is intended to be a testing ground for a safe interface in Rust to the
core btree interface. This adds rust wrappers for:

bch_fs:		provides bch2_fs_open(), bch2_fs_stop
btree_trans:	provides bch2_trans_init(), bch2_trans_exit()
btree_iter:	provides peek, peek_and_restart, advance
bch_errcode:	implements Display (wraps bch2_err_str())
bpos:		implements Ord (wraps bpos_cmp())
bkey_s_c:	implements Display (wraps bch2_bkey_val_to_text())

and other assorted types.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 1 insertions, 9 deletions

diff --git a/rust-src/bch_bindgen/src/rs.rs b/rust-src/bch_bindgen/src/rs.rs
index 17610f3a..24594ae1 100644
--- a/rust-src/bch_bindgen/src/rs.rs
+++ b/rust-src/bch_bindgen/src/rs.rs
@@ -1,15 +1,7 @@
 use anyhow::anyhow;
 use crate::bcachefs;
 use crate::bcachefs::*;
-use std::ffi::CStr;
-use std::fmt;
-
-impl fmt::Display for bch_errcode {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let s = unsafe { CStr::from_ptr(bch2_err_str(*self as i32)) };
-        write!(f, "{:?}", s)
-    }
-}
+use crate::errcode::bch_errcode;
 
 pub fn read_super_opts(
     path: &std::path::Path,