Changeset 52505 in vbox for trunk/src

Timestamp:

Aug 27, 2014 1:13:37 PM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

95736

Message:

DrvHostBase: Provide I/O buffer allocator, fixes crash if a host DVD drive is attached to the AHCI controller without passthrough enabled and a medium inserted

File:

• trunk/src/VBox/Devices/Storage/DrvHostBase.cpp (modified) (3 diffs)

trunk/src/VBox/Devices/Storage/DrvHostBase.cpp

@@ -123 +123 @@
 #include <iprt/critsect.h>
 #include <iprt/ctype.h>
+#include <iprt/mem.h>
 
 #include "DrvHostBase.h"
@@ -323 +324 @@
     return VINF_SUCCESS;
 }
+
+
+/** @copydoc PDMIBLOCK::pfnIoBufAlloc */
+static DECLCALLBACK(int) drvHostBaseIoBufAlloc(PPDMIBLOCK pInterface, size_t cb, void **ppvNew)
+{
+    LogFlowFunc(("\n"));
+    int rc;
+    PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
+
+    void *pvNew = RTMemAlloc(cb);
+    if (RT_LIKELY(pvNew))
+    {
+        *ppvNew = pvNew;
+        rc = VINF_SUCCESS;
+    }
+    else
+        rc = VERR_NO_MEMORY;
+
+    LogFlowFunc(("returns %Rrc\n", rc));
+    return rc;
+}
+
+/** @copydoc PDMIBLOCK::pfnIoBufFree */
+static DECLCALLBACK(int) drvHostBaseIoBufFree(PPDMIBLOCK pInterface, void *pv, size_t cb)
+{
+    LogFlowFunc(("\n"));
+    int rc = VINF_SUCCESS;
+    PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
+
+    NOREF(cb);
+    RTMemFree(pv);
+
+    LogFlowFunc(("returns %Rrc\n", rc));
+    return rc;
+}
+
 
 
@@ -1891 +1928 @@
     pThis->IBlock.pfnGetType                = drvHostBaseGetType;
     pThis->IBlock.pfnGetUuid                = drvHostBaseGetUuid;
+    pThis->IBlock.pfnIoBufAlloc             = drvHostBaseIoBufAlloc;
+    pThis->IBlock.pfnIoBufFree              = drvHostBaseIoBufFree;
 
     /* IBlockBios. */