fix: make data io::Read

.devcontainer/devcontainer.json

@@ -0,0 +1,20 @@
+{
+  "image": "gcr.io/crosvm-infra/crosvm_dev:latest",
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml",
+        "esbenp.prettier-vscode",
+        "ms-python.vscode-pylance",
+        "foxundermoon.shell-format",
+        "timonwong.shellcheck"
+      ]
+    }
+  },
+  "runArgs": [
+    // Allow a higher PID limit since we launch a lot of test processes.
+    "--pids-limit=4096"
+  ],
+  "updateContentCommand": "git config --global --add safe.directory '*' && git submodule update --init"
+}

.devcontainer/with_kvm/devcontainer.json

@@ -0,0 +1,23 @@
+{
+  "image": "gcr.io/crosvm-infra/crosvm_dev:latest",
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml",
+        "esbenp.prettier-vscode",
+        "ms-python.vscode-pylance",
+        "foxundermoon.shell-format",
+        "timonwong.shellcheck"
+      ]
+    }
+  },
+  "runArgs": [
+    // Allow access to the kvm device so we can run VMs for testing
+    "--device=/dev/kvm",
+    "--group-add=kvm",
+    // Allow a higher PID limit since we launch a lot of test processes.
+    "--pids-limit=4096"
+  ],
+  "updateContentCommand": "git config --global --add safe.directory '*' && git submodule update --init"
+}

src/coding/wire_format.rs

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+use bytes::Buf;
 use std::fmt;
 use std::io;
 use std::io::ErrorKind;
@@ -318,10 +319,9 @@ impl<T: WireFormat> WireFormat for io::Result<T> {
     }
 }
 
-
 impl io::Read for Data {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        self.0.read(buf)
+        self.0.reader().read(buf)
     }
 }
 
@@ -848,4 +848,15 @@ mod test {
                 .expect("failed to decode value")
         );
     }
+
+    #[test]
+    fn test_io_read_for_data() {
+        let mut data =
+            Data(vec![0x8b, 0xad, 0xf0, 0x0d, 0x0d, 0xf0, 0xad, 0x8b]);
+        let mut buf = [0; 8];
+
+        let _ = io::Read::read_exact(&mut data, &mut buf);
+
+        assert_eq!(buf, [0x8b, 0xad, 0xf0, 0x0d, 0x0d, 0xf0, 0xad, 0x8b]);
+    }
 }