Changeset 19199 in vbox

Timestamp:

Apr 27, 2009 9:39:51 AM (16 years ago)

Author:

vboxsync

Message:

Storage/VBoxHDD: fix bug leading to incorrectly ignoring writes. leads to data corruption when snapshots are used and the data written is the same as of the parent image.

File:

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

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

@@ -385 +385 @@
     if (cbPreRead)
     {
-        rc = vdReadHelper(pDisk, pImage->pPrev, uOffset - cbPreRead, pvTmp,
+        rc = vdReadHelper(pDisk, pImage, uOffset - cbPreRead, pvTmp,
                           cbPreRead);
         if (RT_FAILURE(rc))
@@ -420 +420 @@
                    (char *)pvBuf + cbThisWrite, cbWriteCopy);
         if (cbReadImage)
-            rc = vdReadHelper(pDisk, pImage->pPrev,
+            rc = vdReadHelper(pDisk, pImage,
                               uOffset + cbThisWrite + cbWriteCopy,
                               (char *)pvTmp + cbPreRead + cbThisWrite + cbWriteCopy,
@@ -481 +481 @@
     /* Read the entire data of the block so that we can compare whether it will
      * be modified by the write or not. */
-    rc = vdReadHelper(pDisk, pImage->pPrev, uOffset - cbPreRead, pvTmp,
+    rc = vdReadHelper(pDisk, pImage, uOffset - cbPreRead, pvTmp,
                       cbPreRead + cbThisWrite + cbPostRead - cbFill);
     if (RT_FAILURE(rc))