Changeset 81620 in vbox for trunk/src/VBox/Runtime/r0drv/os2/memobj-r0drv-os2.cpp

Timestamp:

Nov 1, 2019 2:37:52 PM (5 years ago)

Author:

vboxsync

Message:

IPRT/memobj-r0drv-os2.cpp: Implemented sub-mappings in kernel space. bugref:9218

File:

• trunk/src/VBox/Runtime/r0drv/os2/memobj-r0drv-os2.cpp (modified) (3 diffs)

trunk/src/VBox/Runtime/r0drv/os2/memobj-r0drv-os2.cpp

@@ -349 +349 @@
                                           unsigned fProt, size_t offSub, size_t cbSub)
 {
-    AssertMsgReturn(!offSub && !cbSub, ("%#x %#x\n", offSub, cbSub), VERR_NOT_SUPPORTED);
     AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED);
 
@@ -357 +356 @@
     if (uAlignment > PAGE_SIZE)
         return VERR_NOT_SUPPORTED;
-
 
 /** @todo finish the implementation. */
@@ -416 +414 @@
      * (reference counting).
      */
+    if (!cbSub)
+        cbSub = pMemToMapOs2->Core.cb - offSub;
     PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_UOFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_MAPPING,
-                                                           pvR0, pMemToMapOs2->Core.cb);
+                                                           (uint8_t *)pvR0 + offSub, cbSub);
     if (pMemOs2)
     {