2 files changed, 38 insertions, 1 deletions
diff --git a/src/fuse/ops.rs b/src/fuse/ops.rs
index 21458c2..e27e900 100644
--- a/src/fuse/ops.rs
+++ b/src/fuse/ops.rs
@@ -226,7 +226,7 @@ op! {
 op! {
     Write {
         type RequestBody = (&'o proto::WriteIn, &'o [u8]);
-        type ReplyTail = ();
+        type ReplyTail = state::Write;
     }
 
     impl Request {
@@ -242,6 +242,16 @@ op! {
             self.body.1
         }
     }
+
+    impl Reply {
+        pub fn all(self) -> Done<'o> {
+            let size = self.tail.size;
+            self.single(&proto::WriteOut {
+                size,
+                padding: Default::default(),
+            })
+        }
+    }
 }
 
 op! {
@@ -511,6 +521,10 @@ pub(crate) mod state {
         pub is_plus: bool,
         pub buffer: B,
     }
+
+    pub struct Write {
+        pub size: u32,
+    }
 }
 
 impl<'o, O: Operation<'o>> FromRequest<'o, O> for () {
@@ -525,6 +539,22 @@ impl<'o> FromRequest<'o, Open> for proto::OpenOutFlags {
     }
 }
 
+impl<'o> FromRequest<'o, Write> for state::Write {
+    fn from_request(request: &Request<'o, Write>) -> Self {
+        let (body, data) = request.body;
+
+        if body.size as usize != data.len() {
+            log::warn!(
+                "Write size={} differs from data.len={}",
+                body.size,
+                data.len()
+            );
+        }
+
+        state::Write { size: body.size }
+    }
+}
+
 impl<'o> FromRequest<'o, Readdir> for state::Readdir<()> {
     fn from_request(request: &Request<'o, Readdir>) -> Self {
         state::Readdir {
diff --git a/src/proto.rs b/src/proto.rs
index 1ef33a5..128112d 100644
--- a/src/proto.rs
+++ b/src/proto.rs
@@ -295,6 +295,13 @@ pub struct WriteIn {
 
 #[derive(Pod, Zeroable, Copy, Clone)]
 #[repr(C)]
+pub struct WriteOut {
+    pub size: u32,
+    pub padding: u32,
+}
+
+#[derive(Pod, Zeroable, Copy, Clone)]
+#[repr(C)]
 pub struct StatfsOut {
     pub blocks: u64,
     pub bfree: u64,