Expose the process errorstring, to help with debugging

Change-Id: Iab69ce0937c57a4ec852247d192e16f73ca3ef27
Reviewed-by: Andrew Christian <andrew.christian@nokia.com>

6 files changed, 35 insertions, 0 deletions

diff --git a/src/core/processbackend.cpp b/src/core/processbackend.cpp
index c3da1a1..ab220a5 100644
--- a/src/core/processbackend.cpp
+++ b/src/core/processbackend.cpp
@@ -158,6 +158,16 @@ QString ProcessBackend::workingDirectory() const
 }
 
 /*!
+    Returns a human-readable description of the last device error that
+    occurred.
+ */
+QString ProcessBackend::errorString() const
+{
+    return QString();
+}
+
+
+/*!
     Return the process UID
 */
 
diff --git a/src/core/processbackend.h b/src/core/processbackend.h
index 87fdff8..333f75a 100644
--- a/src/core/processbackend.h
+++ b/src/core/processbackend.h
@@ -63,6 +63,8 @@ public:
     virtual QVariantMap environment() const;
     virtual QString     workingDirectory() const;
 
+    virtual QString     errorString() const;
+
     virtual qint64 uid() const;
     virtual qint64 gid() const;
     virtual Q_PID  pid() const;
diff --git a/src/core/processfrontend.cpp b/src/core/processfrontend.cpp
index 4d0b946..e6d71d3 100644
--- a/src/core/processfrontend.cpp
+++ b/src/core/processfrontend.cpp
@@ -520,6 +520,15 @@ ProcessBackend *ProcessFrontend::backend() const
     Only applicable under Linux.
 */
 
+/*!
+    Returns a human-readable description of the last device error that
+    occurred.
+ */
+QString ProcessFrontend::errorString() const
+{
+    return m_backend->errorString();
+}
+
 #include "moc_processfrontend.cpp"
 
 QT_END_NAMESPACE_PROCESSMANAGER
diff --git a/src/core/processfrontend.h b/src/core/processfrontend.h
index a7a8a6a..ffc588e 100644
--- a/src/core/processfrontend.h
+++ b/src/core/processfrontend.h
@@ -69,6 +69,8 @@ class ProcessFrontend : public QObject
     Q_PROPERTY(int priority READ priority WRITE setPriority NOTIFY priorityChanged)
     Q_PROPERTY(int oomAdjustment READ oomAdjustment WRITE setOomAdjustment NOTIFY oomAdjustmentChanged)
 
+    Q_PROPERTY(QString errorString READ errorString)
+
 public:
     virtual ~ProcessFrontend();
 
@@ -101,6 +103,8 @@ public:
 
     Q_INVOKABLE QVariantMap processInfo() const;
 
+    QString errorString() const;
+
 signals:
     void aboutToStart();
     void aboutToStop();
diff --git a/src/core/unixprocessbackend.cpp b/src/core/unixprocessbackend.cpp
index c9bf3d6..06eb15b 100644
--- a/src/core/unixprocessbackend.cpp
+++ b/src/core/unixprocessbackend.cpp
@@ -327,6 +327,14 @@ void UnixProcessBackend::readyReadStandardError()
     handleStandardError(m_process->readAllStandardError());
 }
 
+/*!
+    \internal
+ */
+QString UnixProcessBackend::errorString() const
+{
+    return m_process->errorString();
+}
+
 #include "moc_unixprocessbackend.cpp"
 
 QT_END_NAMESPACE_PROCESSMANAGER
diff --git a/src/core/unixprocessbackend.h b/src/core/unixprocessbackend.h
index ae68ffb..c1a09fe 100644
--- a/src/core/unixprocessbackend.h
+++ b/src/core/unixprocessbackend.h
@@ -70,6 +70,8 @@ public:
 
     virtual qint64 write(const char *data, qint64 maxSize);
 
+    virtual QString errorString() const;
+
 protected:
     bool createProcess();
     void startProcess();