Changeset 91330 in vbox for trunk/src/VBox/Runtime/common

Timestamp:

Sep 22, 2021 3:17:10 PM (3 years ago)

Author:

vboxsync

Message:

Runtime/common/vfs/vfsmemory.cpp: Quick and dirty implementation for the SetSize callback when the caller wants to grow the file. Used for bugref:10098

File:

• trunk/src/VBox/Runtime/common/vfs/vfsmemory.cpp (modified) (1 diff)

trunk/src/VBox/Runtime/common/vfs/vfsmemory.cpp

@@ -692 +692 @@
 static DECLCALLBACK(int) rtVfsMemFile_SetSize(void *pvThis, uint64_t cbFile, uint32_t fFlags)
 {
-    NOREF(pvThis); NOREF(cbFile); NOREF(fFlags);
+    AssertReturn(RTVFSFILE_SIZE_F_IS_VALID(fFlags), VERR_INVALID_PARAMETER);
+
+    PRTVFSMEMFILE pThis = (PRTVFSMEMFILE)pvThis;
+    if (   (fFlags & RTVFSFILE_SIZE_F_ACTION_MASK) == RTVFSFILE_SIZE_F_NORMAL
+        && (RTFOFF)cbFile >= pThis->Base.ObjInfo.cbObject)
+    {
+        /* Growing is just a matter of increasing the size of the object. */
+        pThis->Base.ObjInfo.cbObject = cbFile;
+        return VINF_SUCCESS;
+    }
+
     AssertMsgFailed(("Lucky you! You get to implement this (or bug bird about it).\n"));
     return VERR_NOT_IMPLEMENTED;