QError: Introduce QERR_IO_ERROR

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
diff --git a/qerror.c b/qerror.c
index 656efc2..b544ced 100644
--- a/qerror.c
+++ b/qerror.c
@@ -149,6 +149,10 @@
         .desc      = "Password incorrect",
     },
     {
+        .error_fmt = QERR_IO_ERROR,
+        .desc      = "An IO error has occurred",
+    },
+    {
         .error_fmt = QERR_JSON_PARSING,
         .desc      = "Invalid JSON syntax",
     },
diff --git a/qerror.h b/qerror.h
index 161d654..1fee39d 100644
--- a/qerror.h
+++ b/qerror.h
@@ -126,6 +126,9 @@
 #define QERR_INVALID_PASSWORD \
     "{ 'class': 'InvalidPassword', 'data': {} }"
 
+#define QERR_IO_ERROR \
+    "{ 'class': 'IOError', 'data': {} }"
+
 #define QERR_JSON_PARSING \
     "{ 'class': 'JSONParsing', 'data': {} }"