Changeset 31180 in vbox for trunk/include/VBox

Timestamp:

Jul 28, 2010 6:11:10 PM (15 years ago)

Author:

vboxsync

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

64167

Message:

Main/Medium+Main/Console+Storage: Pass a flag for the medium type "Shareable" to the image format backends so that they can treat the files appropriately.

File:

• trunk/include/VBox/VBoxHDD.h (modified) (1 diff)

trunk/include/VBox/VBoxHDD.h

@@ -169 +169 @@
  *  Only available if VD_CAP_ASYNC_IO is set
  *  Check with VDIsAsynchonousIoSupported wether
- *  asynchronous I/O is really supported for this file.
- */
+ *  asynchronous I/O is really supported for this file.  */
 #define VD_OPEN_FLAGS_ASYNC_IO      RT_BIT(4)
+/** Allow sharing of the image for writable images. May be ignored if the
+ * format backend doesn't support this type of concurrent access. */
+#define VD_OPEN_FLAGS_SHAREABLE     RT_BIT(5)
 /** Mask of valid flags. */
-#define VD_OPEN_FLAGS_MASK          (VD_OPEN_FLAGS_NORMAL | VD_OPEN_FLAGS_READONLY | VD_OPEN_FLAGS_HONOR_ZEROES | VD_OPEN_FLAGS_HONOR_SAME | VD_OPEN_FLAGS_INFO | VD_OPEN_FLAGS_ASYNC_IO)
+#define VD_OPEN_FLAGS_MASK          (VD_OPEN_FLAGS_NORMAL | VD_OPEN_FLAGS_READONLY | VD_OPEN_FLAGS_HONOR_ZEROES | VD_OPEN_FLAGS_HONOR_SAME | VD_OPEN_FLAGS_INFO | VD_OPEN_FLAGS_ASYNC_IO | VD_OPEN_FLAGS_SHAREABLE)
 /** @}*/