LinuxProcessInterface: Fix error reporting on failed to start

Change-Id: I2af4a13289458e6270452a254cf90f7bd9cc3684
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/remotelinux/linuxdevice.cpp

@@ -448,6 +448,11 @@ void SshProcessInterface::handleStarted(qint64 processId)
     emitStarted(processId);
 }
 
+void SshProcessInterface::handleDone(const ProcessResultData &resultData)
+{
+    emit done(resultData);
+}
+
 void SshProcessInterface::handleReadyReadStandardOutput(const QByteArray &outputData)
 {
     emit readyRead(outputData, {});
@@ -580,6 +585,20 @@ void LinuxProcessInterface::handleStarted(qint64 processId)
     emitStarted(processId);
 }
 
+void LinuxProcessInterface::handleDone(const ProcessResultData &resultData)
+{
+    ProcessResultData finalData = resultData;
+    if (!m_pidParsed) {
+        finalData.m_error = QProcess::FailedToStart;
+        if (!m_error.isEmpty()) {
+            if (!finalData.m_errorString.isEmpty())
+                finalData.m_errorString += "\n";
+            finalData.m_errorString += QString::fromLocal8Bit(m_error);
+        }
+    }
+    emit done(finalData);
+}
+
 void LinuxProcessInterface::handleReadyReadStandardOutput(const QByteArray &outputData)
 {
     if (m_pidParsed) {
@@ -690,8 +709,9 @@ void SshProcessInterfacePrivate::handleStarted()
 
 void SshProcessInterfacePrivate::handleDone()
 {
-    m_connectionHandle.reset();
-    emit q->done(m_process.resultData());
+    if (m_connectionHandle) // TODO: should it disconnect from signals first?
+        m_connectionHandle.release()->deleteLater();
+    q->handleDone(m_process.resultData());
 }
 
 void SshProcessInterfacePrivate::handleReadyReadStandardOutput()

src/plugins/remotelinux/linuxprocessinterface.h

@@ -44,6 +44,7 @@ private:
     void sendControlSignal(Utils::ControlSignal controlSignal) override;
 
     void handleStarted(qint64 processId) final;
+    void handleDone(const Utils::ProcessResultData &resultData);
     void handleReadyReadStandardOutput(const QByteArray &outputData) final;
     void handleReadyReadStandardError(const QByteArray &errorData) final;
 

src/plugins/remotelinux/rsyncdeploystep.cpp

@@ -51,12 +51,23 @@ public:
     {
         connect(&m_mkdir, &QtcProcess::done, this, [this] {
             if (m_mkdir.result() != ProcessResult::FinishedWithSuccess) {
-                emit errorMessage(tr("Failed to create remote directories: %1").arg(m_mkdir.stdErr()));
+                QString finalMessage = m_mkdir.errorString();
+                const QString stdErr = m_mkdir.stdErr();
+                if (!stdErr.isEmpty()) {
+                    if (!finalMessage.isEmpty())
+                        finalMessage += '\n';
+                    finalMessage += stdErr;
+                }
+                emit errorMessage(tr("Deploy via rsync: failed to create remote directories:")
+                                  + '\n' + finalMessage);
                 setFinished();
                 return;
             }
             deployFiles();
         });
+        connect(&m_mkdir, &QtcProcess::readyReadStandardError, this, [this] {
+            emit stdErrData(QString::fromLocal8Bit(m_mkdir.readAllStandardError()));
+        });
         connect(&m_fileTransfer, &FileTransfer::progress,
                 this, &AbstractRemoteLinuxDeployService::stdOutData);
         connect(&m_fileTransfer, &FileTransfer::done, this, [this](const ProcessResultData &result) {

src/plugins/remotelinux/sshprocessinterface.h

@@ -50,6 +50,7 @@ protected:
 
 private:
     virtual void handleStarted(qint64 processId);
+    virtual void handleDone(const Utils::ProcessResultData &resultData);
     virtual void handleReadyReadStandardOutput(const QByteArray &outputData);
     virtual void handleReadyReadStandardError(const QByteArray &errorData);