libbinder : Adding new type TransportFd
Adding a new struct TransportFd which will contain unique_fd and
polling state of file descriptor. This will be useful in detecting
if all the descriptors are being polled. unique_fd and borrowed_fd
are replaced in these changes.
Test: m
Test: m libbinder binderRpcTest && atest binderRpcTest
Test: trusty/vendor/google/aosp/scripts/build.py --test
"boot-test:com.android.trusty.binder.test" qemu-generic-arm64-test-debug
Bug: 218518615
Change-Id: Id108806b98184582e5d93186b3b1884017c441ea
diff --git a/libs/binder/RpcTransportTipcAndroid.cpp b/libs/binder/RpcTransportTipcAndroid.cpp
index c82201b..2e7e931 100644
--- a/libs/binder/RpcTransportTipcAndroid.cpp
+++ b/libs/binder/RpcTransportTipcAndroid.cpp
@@ -36,8 +36,7 @@
// RpcTransport for writing Trusty IPC clients in Android.
class RpcTransportTipcAndroid : public RpcTransport {
public:
- explicit RpcTransportTipcAndroid(android::base::unique_fd socket)
- : mSocket(std::move(socket)) {}
+ explicit RpcTransportTipcAndroid(android::TransportFd socket) : mSocket(std::move(socket)) {}
status_t pollRead() override {
if (mReadBufferPos < mReadBufferSize) {
@@ -46,7 +45,7 @@
}
// Trusty IPC device is not a socket, so MSG_PEEK is not available
- pollfd pfd{.fd = mSocket.get(), .events = static_cast<int16_t>(POLLIN), .revents = 0};
+ pollfd pfd{.fd = mSocket.fd.get(), .events = static_cast<int16_t>(POLLIN), .revents = 0};
ssize_t ret = TEMP_FAILURE_RETRY(::poll(&pfd, 1, 0));
if (ret < 0) {
int savedErrno = errno;
@@ -84,9 +83,9 @@
// to send any.
LOG_ALWAYS_FATAL_IF(ancillaryFds != nullptr && !ancillaryFds->empty(),
"File descriptors are not supported on Trusty yet");
- return TEMP_FAILURE_RETRY(tipc_send(mSocket.get(), iovs, niovs, nullptr, 0));
+ return TEMP_FAILURE_RETRY(tipc_send(mSocket.fd.get(), iovs, niovs, nullptr, 0));
};
- return interruptableReadOrWrite(mSocket.get(), fdTrigger, iovs, niovs, writeFn, "tipc_send",
+ return interruptableReadOrWrite(mSocket, fdTrigger, iovs, niovs, writeFn, "tipc_send",
POLLOUT, altPoll);
}
@@ -120,10 +119,12 @@
return processSize;
};
- return interruptableReadOrWrite(mSocket.get(), fdTrigger, iovs, niovs, readFn, "read",
- POLLIN, altPoll);
+ return interruptableReadOrWrite(mSocket, fdTrigger, iovs, niovs, readFn, "read", POLLIN,
+ altPoll);
}
+ bool isWaiting() override { return mSocket.isInPollingState(); }
+
private:
status_t fillReadBuffer() {
if (mReadBufferPos < mReadBufferSize) {
@@ -146,8 +147,8 @@
mReadBufferSize = 0;
while (true) {
- ssize_t processSize =
- TEMP_FAILURE_RETRY(read(mSocket.get(), mReadBuffer.get(), mReadBufferCapacity));
+ ssize_t processSize = TEMP_FAILURE_RETRY(
+ read(mSocket.fd.get(), mReadBuffer.get(), mReadBufferCapacity));
if (processSize == 0) {
return DEAD_OBJECT;
} else if (processSize < 0) {
@@ -173,7 +174,7 @@
}
}
- base::unique_fd mSocket;
+ TransportFd mSocket;
// For now, we copy all the input data into a temporary buffer because
// we might get multiple interruptableReadFully calls per message, but
@@ -192,8 +193,7 @@
// RpcTransportCtx for Trusty.
class RpcTransportCtxTipcAndroid : public RpcTransportCtx {
public:
- std::unique_ptr<RpcTransport> newTransport(android::base::unique_fd fd,
- FdTrigger*) const override {
+ std::unique_ptr<RpcTransport> newTransport(android::TransportFd fd, FdTrigger*) const override {
return std::make_unique<RpcTransportTipcAndroid>(std::move(fd));
}
std::vector<uint8_t> getCertificate(RpcCertificateFormat) const override { return {}; }