Changeset 38881 in vbox for trunk/src/VBox

Timestamp:

Sep 27, 2011 9:28:32 AM (13 years ago)

Author:

vboxsync

Message:

PDMAsyncCompletion: Return an error for a read beyond the end of the file

File:

• trunk/src/VBox/VMM/VMMR3/PDMAsyncCompletionFile.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR3/PDMAsyncCompletionFile.cpp

@@ -1231 +1231 @@
     STAM_PROFILE_ADV_START(&pEpFile->StatRead, Read);
 
-    pdmacFileEpTaskInit(pTask, cbRead);
-
-    rc = pdmacFileEpTaskInitiate(pTask, pEndpoint, off, paSegments, cSegments, cbRead,
-                                 PDMACTASKFILETRANSFER_READ);
+    if (RT_LIKELY(off + cbRead <= pEpFile->cbFile))
+    {
+        pdmacFileEpTaskInit(pTask, cbRead);
+
+        rc = pdmacFileEpTaskInitiate(pTask, pEndpoint, off, paSegments, cSegments, cbRead,
+                                     PDMACTASKFILETRANSFER_READ);
+    }
+    else
+        rc = VERR_EOF;
 
     STAM_PROFILE_ADV_STOP(&pEpFile->StatRead, Read);