optee-teec: API improvements and dependency cleanup

optee-teec/Cargo.toml

@@ -26,7 +26,6 @@ edition = "2018"
 
 [dependencies]
 optee-teec-sys = { version = "0.8.0", path = "optee-teec-sys" }
-optee-teec-macros = { version = "0.8.0", path = "macros" }
 uuid = "0.7"
 hex = "0.3"
 num_enum = { version = "0.7.3", default-features = false }

optee-teec/src/lib.rs

@@ -22,7 +22,6 @@ pub use self::operation::Operation;
 pub use self::parameter::{Param, ParamNone, ParamTmpRef, ParamType, ParamTypes, ParamValue};
 pub use self::session::{ConnectionMethods, Session};
 pub use self::uuid::Uuid;
-pub use optee_teec_macros::{plugin_init, plugin_invoke};
 // Re-export optee_teec_sys so developers don't have to add it to their cargo
 // dependencies.
 pub use optee_teec_sys as raw;

optee-teec/src/parameter.rs

@@ -127,6 +127,26 @@ impl<'a> ParamTmpRef<'a> {
         }
     }
 
+    /// Creates a temporary input/output memory reference.
+    ///
+    /// `buffer` is a region of memory which needs to be temporarily
+    /// registered for the duration of the `Operation` and can be both
+    /// read and written by the Trusted Application (TA).
+    ///
+    /// This is useful when you need to pass data to a TA that will
+    /// modify it and return the modified data in the same buffer.
+    pub fn new_inout(buffer: &'a mut [u8]) -> Self {
+        let raw = raw::TEEC_TempMemoryReference {
+            buffer: buffer.as_ptr() as _,
+            size: buffer.len(),
+        };
+        Self {
+            raw,
+            param_type: ParamType::MemrefTempInout,
+            _marker: marker::PhantomData,
+        }
+    }
+
     pub fn updated_size(&self) -> usize {
         self.raw.size
     }