[PATCH 11/12] rust: chardev: wrap Chardev with Opaque<>

[Paolo Bonzini <pbonzini@redhat.com>]

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/qemu-api/src/bindings.rs | 3 ---
 rust/qemu-api/src/chardev.rs  | 8 ++++++--
 rust/qemu-api/src/qdev.rs     | 1 +
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/rust/qemu-api/src/bindings.rs b/rust/qemu-api/src/bindings.rs
index 26cc8de0cf2..c3f36108bd5 100644
--- a/rust/qemu-api/src/bindings.rs
+++ b/rust/qemu-api/src/bindings.rs
@@ -31,9 +31,6 @@ unsafe impl Sync for BusState {}
 unsafe impl Send for CharBackend {}
 unsafe impl Sync for CharBackend {}
 
-unsafe impl Send for Chardev {}
-unsafe impl Sync for Chardev {}
-
 unsafe impl Send for ObjectClass {}
 unsafe impl Sync for ObjectClass {}
 
diff --git a/rust/qemu-api/src/chardev.rs b/rust/qemu-api/src/chardev.rs
index 74cfb634e5f..a35b9217e90 100644
--- a/rust/qemu-api/src/chardev.rs
+++ b/rust/qemu-api/src/chardev.rs
@@ -6,9 +6,13 @@
 
 use std::ffi::CStr;
 
-use crate::{bindings, prelude::*};
+use crate::{bindings, cell::Opaque, prelude::*};
+
+/// A safe wrapper around [`bindings::Chardev`].
+#[repr(transparent)]
+#[derive(qemu_api_macros::Wrapper)]
+pub struct Chardev(Opaque<bindings::Chardev>);
 
-pub type Chardev = bindings::Chardev;
 pub type ChardevClass = bindings::ChardevClass;
 
 unsafe impl ObjectType for Chardev {
diff --git a/rust/qemu-api/src/qdev.rs b/rust/qemu-api/src/qdev.rs
index 1c4a67b5728..18b4a9ba687 100644
--- a/rust/qemu-api/src/qdev.rs
+++ b/rust/qemu-api/src/qdev.rs
@@ -334,6 +334,7 @@ fn init_clock_out(&self, name: &str) -> Owned<Clock> {
     fn prop_set_chr(&self, propname: &str, chr: &Owned<Chardev>) {
         assert!(bql_locked());
         let c_propname = CString::new(propname).unwrap();
+        let chr: &Chardev = chr;
         unsafe {
             bindings::qdev_prop_set_chr(
                 self.upcast().as_mut_ptr(),
-- 
2.48.1