From: Marc-André Lureau <marcandre.lur...@redhat.com>
Add a macro to help wrapping higher-level qmp handlers, by taking care
of errors and return value pointer translation.
Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
qga/lib.rs | 1 +
qga/qmp/mod.rs | 36 ++++++++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+)
create mode 100644 qga/qmp/mod.rs
diff --git a/qga/lib.rs b/qga/lib.rs
index bff4107569..5fe08c25a3 100644
--- a/qga/lib.rs
+++ b/qga/lib.rs
@@ -1,2 +1,3 @@
mod qapi;
mod qapi_sys;
+mod qmp;
diff --git a/qga/qmp/mod.rs b/qga/qmp/mod.rs
new file mode 100644
index 0000000000..38060100af
--- /dev/null
+++ b/qga/qmp/mod.rs
@@ -0,0 +1,36 @@
+use common::*;
+
+use crate::*;
+
+macro_rules! qmp {
+ // the basic return value variant
+ ($e:expr, $errp:ident, $errval:expr) => {{
+ assert!(!$errp.is_null());
+ unsafe {
+ *$errp = std::ptr::null_mut();
+ }
+
+ match $e {
+ Ok(val) => val,
+ Err(err) => unsafe {
+ *$errp = err.to_qemu_full();
+ $errval
+ },
+ }
+ }};
+ // the ptr return value variant
+ ($e:expr, $errp:ident) => {{
+ assert!(!$errp.is_null());
+ unsafe {
+ *$errp = std::ptr::null_mut();
+ }
+
+ match $e {
+ Ok(val) => val.to_qemu_full().into(),
+ Err(err) => unsafe {
+ *$errp = err.to_qemu_full();
+ std::ptr::null_mut()
+ },
+ }
+ }};
+}
--
2.28.0
