Changeset 77246 in vbox for trunk/src/VBox/HostServices/SharedFolders

Timestamp:

Feb 10, 2019 11:48:54 PM (6 years ago)

Author:

vboxsync

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

128753

Message:

HGCM,SharedFolders: Added new variation on the HGCM page list type that does not use a bounce buffer. bugref:9172 [fix]

• Added VMMDevHGCMParmType_NoBouncePageList.
• Made VMMDevHGCMParmType_Embedded and VMMDevHGCMParmType_ContiguousPageList return updated buffer size to the guest.
• Changed the SHFL_FN_READ and SHFL_FN_WRITE function to accept VMMDevHGCMParmType_NoBouncePageList as buffer parameter type, using the RTFileSgReadAt/WriteAt functions to do the work.
• Modified the offset parameter of SHFL_FN_WRITE to return an update offset to assist in the RTFILE_O_APPEND scenarios where other parties have extended the file without the guest knowing. The guest now gets the file size returned after each write to an handle opened with RTFILE_O_APPEND.

File:

• trunk/src/VBox/HostServices/SharedFolders/vbsf.cpp (modified) (1 diff)

trunk/src/VBox/HostServices/SharedFolders/vbsf.cpp

@@ -1041 +1041 @@
             void *pvSeg;
             paSegs[iSeg].pvSeg = pvSeg = pPages->papvPages[iPage];
-            size_t cbSeg = PAGE_SIZE - ((uintptr_t)pvSeg & PAGE_OFFSET_MASK);
+            uint32_t cbSeg = PAGE_SIZE - (uint32_t)((uintptr_t)pvSeg & PAGE_OFFSET_MASK);
             iPage++;