Changeset 40027 in vbox for trunk/src/VBox/Runtime/common/dvm/dvmgpt.cpp

Timestamp:

Feb 7, 2012 11:09:31 PM (13 years ago)

Author:

vboxsync

Message:

Runtime/Dvm: Add callbacks to query the allocation status of blocks (for filesystem aware image compaction)

File:

• trunk/src/VBox/Runtime/common/dvm/dvmgpt.cpp (modified) (2 diffs)

trunk/src/VBox/Runtime/common/dvm/dvmgpt.cpp

@@ -482 +482 @@
     NOREF(hVolFmt); /* No supported flags for now. */
     return 0;
+}
+
+DECLCALLBACK(bool) rtDvmFmtGptVolumeIsRangeIntersecting(RTDVMVOLUMEFMT hVolFmt,
+                                                        uint64_t offStart, size_t cbRange,
+                                                        uint64_t *poffVol,
+                                                        size_t *pcbIntersect)
+{
+    bool fIntersect = false;
+    PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
+
+    if (RTDVM_RANGE_IS_INTERSECTING(pVol->offStart, pVol->cbVolume, offStart))
+    {
+        fIntersect    = true;
+        *poffVol      = offStart - pVol->offStart;
+        *pcbIntersect = RT_MIN(cbRange, pVol->offStart + pVol->cbVolume - offStart);
+    }
+
+    return fIntersect;
 }
 
@@ -530 +548 @@
     /* pfnVolumeGetFlags */
     rtDvmFmtGptVolumeGetFlags,
+    /* pfnVolumeIsRangeIntersecting */
+    rtDvmFmtGptVolumeIsRangeIntersecting,
     /* pfnVolumeRead */
     rtDvmFmtGptVolumeRead,