Merge "Process large messages from TA" am: 6dfeccf9

// limitations under the License.

//! This module implements the HAL service for Keymint (Rust) in Trusty.

use kmr_hal::{keymint, rpc, secureclock, send_hal_info, sharedsecret, SerializedChannel};

use kmr_hal::{

    extract_rsp, keymint, rpc, secureclock, send_hal_info, sharedsecret, SerializedChannel,

};

use log::{error, info};

use std::{

    ffi::CString,

struct TipcChannel(trusty::TipcChannel);

impl SerializedChannel for TipcChannel {

    const MAX_SIZE: usize = 4000;

    fn execute(&mut self, serialized_req: &[u8]) -> binder::Result<Vec<u8>> {

        self.0.send(serialized_req).map_err(|e| {

            binder::Status::new_exception(

                ),

            )

        })?;

        let mut expect_more_msgs = true;

        let mut full_rsp = Vec::new();

        while expect_more_msgs {

            let mut recv_buf = Vec::new();

        // TODO(b/253501976): cope with fragmentation of responses

            self.0.recv(&mut recv_buf).map_err(|e| {

                binder::Status::new_exception(

                    binder::ExceptionCode::TRANSACTION_FAILED,

                    ),

                )

            })?;

        Ok(recv_buf)

            let current_rsp_content;

            (expect_more_msgs, current_rsp_content) = extract_rsp(&recv_buf)?;

            full_rsp.extend_from_slice(current_rsp_content);

        }

        Ok(full_rsp)

    }

}