2 files changed, 16 insertions, 3 deletions
diff --git a/src/devreader-linux.cpp b/src/devreader-linux.cpp
index 5b6e9eb..85824cd 100644
--- a/src/devreader-linux.cpp
+++ b/src/devreader-linux.cpp
@@ -14,6 +14,8 @@
 #include <string>
 #include <list>
 
+#include <stdexcept>
+
 using namespace std;
 
 bool DevReaderLinux::isAvailable()
@@ -28,6 +30,6 @@ list<string> DevReaderLinux::findAllDevices()
     else if(DevReaderLinuxProc::isAvailable())
         return DevReaderLinuxProc::findAllDevices();
     else
-        return list<string>();
+        throw std::runtime_error("neither sysfs nor proc is available");
 }
 
diff --git a/src/main.cpp b/src/main.cpp
index c53e142..5b32183 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -48,6 +48,8 @@
 #include <string>
 #include <vector>
 
+#include <stdexcept>
+
 #include <ctype.h>
 #include <time.h>
 #include <curses.h>
@@ -352,8 +354,17 @@ int main(int argc, char *argv[])
         }
     }
 
-    // auto-detect network devices
-    DevReaderFactory::findAllDevices();
+    try
+    {
+        // auto-detect network devices
+        DevReaderFactory::findAllDevices();
+    }
+    catch (std::runtime_error e)
+    {
+        cerr << "Cannot find any device: " << e.what() << endl;
+        return -1;
+    };
+
     const map<string, DevReader*>& deviceReaders = DevReaderFactory::getAllDevReaders();
 
     // create one instance of the Device class per device