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>

7 files changed, 22 insertions, 2 deletions

diff --git a/rust-src/bch_bindgen/Cargo.lock b/rust-src/bch_bindgen/Cargo.lock
index 82d211b5..b2741976 100644
--- a/rust-src/bch_bindgen/Cargo.lock
+++ b/rust-src/bch_bindgen/Cargo.lock
@@ -48,6 +48,7 @@ dependencies = [
  "gag",
  "libc",
  "memoffset",
+ "paste",
  "pkg-config",
  "udev",
  "uuid",
@@ -440,6 +441,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
 
 [[package]]
+name = "paste"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d01a5bd0424d00070b0098dd17ebca6f961a959dead1dbcbbbc1d1cd8d3deeba"
+
+[[package]]
 name = "peeking_take_while"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
diff --git a/rust-src/bch_bindgen/Cargo.toml b/rust-src/bch_bindgen/Cargo.toml
index 9a9b7a98..cb341eef 100644
--- a/rust-src/bch_bindgen/Cargo.toml
+++ b/rust-src/bch_bindgen/Cargo.toml
@@ -20,6 +20,7 @@ byteorder = "1.3"
 libc = "0.2.69"
 gag = "1.0.0"
 bitflags = "1.3.2"
+paste = "1.0.11"
 
 [build-dependencies]
 pkg-config = "0.3"
diff --git a/rust-src/bch_bindgen/build.rs b/rust-src/bch_bindgen/build.rs
index 8d9986f8..f426316f 100644
--- a/rust-src/bch_bindgen/build.rs
+++ b/rust-src/bch_bindgen/build.rs
@@ -54,6 +54,8 @@ fn main() {
         .allowlist_var("BTREE_ITER.*")
         .blocklist_item("bch2_bkey_ops")
         .allowlist_type("bch_.*")
+        .allowlist_type("fsck_err_opts")
+        .rustified_enum("fsck_err_opts")
         .allowlist_type("nonce")
         .no_debug("bch_replicas_padded")
         .newtype_enum("bch_kdf_types")
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);
+        }
+    }
+}