rust: Filesystem options now supported

This implements opt_set!(), which works exactly the same as the C
version and allows filesystem options to be specified in Rust code.

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

4 files changed, 12 insertions, 2 deletions

diff --git a/rust-src/bch_bindgen/src/btree.rs b/rust-src/bch_bindgen/src/btree.rs
index 7877b6e2..8ab91aeb 100644
--- a/rust-src/bch_bindgen/src/btree.rs
+++ b/rust-src/bch_bindgen/src/btree.rs
@@ -1,5 +1,3 @@
-#![allow(non_snake_case)]
-
 use crate::SPOS_MAX;
 use crate::c;
 use crate::bkey::BkeySC;
diff --git a/rust-src/bch_bindgen/src/lib.rs b/rust-src/bch_bindgen/src/lib.rs
index bce150a4..3bc21a18 100644
--- a/rust-src/bch_bindgen/src/lib.rs
+++ b/rust-src/bch_bindgen/src/lib.rs
@@ -6,6 +6,8 @@ pub mod keyutils;
 pub mod log;
 pub mod rs;
 pub mod fs;
+pub mod opts;
+pub use paste::paste;
 
 pub mod c {
     pub use crate::bcachefs::*;
diff --git a/rust-src/bch_bindgen/src/libbcachefs_wrapper.h b/rust-src/bch_bindgen/src/libbcachefs_wrapper.h
index 6332d957..c8990dcc 100644
--- a/rust-src/bch_bindgen/src/libbcachefs_wrapper.h
+++ b/rust-src/bch_bindgen/src/libbcachefs_wrapper.h
@@ -3,6 +3,7 @@
 #include "../libbcachefs/bcachefs_format.h"
 #include "../libbcachefs/btree_iter.h"
 #include "../libbcachefs/errcode.h"
+#include "../libbcachefs/error.h"
 #include "../libbcachefs/opts.h"
 #include "../libbcachefs.h"
 #include "../crypto.h"
diff --git a/rust-src/bch_bindgen/src/opts.rs b/rust-src/bch_bindgen/src/opts.rs
new file mode 100644
index 00000000..e2261993
--- /dev/null
+++ b/rust-src/bch_bindgen/src/opts.rs
@@ -0,0 +1,9 @@
+#[macro_export]
+macro_rules! opt_set {
+    ($opts:ident, $n:ident, $v:expr) => {
+        bch_bindgen::paste! {
+            $opts.$n = $v;
+            $opts.[<set_ $n _defined>](1);
+        }
+    }
+}