Changeset 78120 in vbox for trunk/src/VBox/Runtime/r0drv/freebsd

Timestamp:

Apr 12, 2019 1:20:50 PM (6 years ago)

Author:

vboxsync

Message:

IPRT: Started adding a RTR0MemObjMapUserEx function that takes offSub and cbSub. bugref:9217

File:

• trunk/src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c (modified) (4 diffs)

trunk/src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c

@@ -651 +651 @@
     if (uAlignment > PAGE_SIZE)
         return VERR_NOT_SUPPORTED;
+    Assert(!offSub || cbSub);
 
     int                rc;
@@ -711 +712 @@
 
 DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment,
-                                        unsigned fProt, RTR0PROCESS R0Process)
+                                        unsigned fProt, RTR0PROCESS R0Process, size_t offSub, size_t cbSub)
 {
     /*
@@ -719 +720 @@
     if (uAlignment > PAGE_SIZE)
         return VERR_NOT_SUPPORTED;
+    Assert(!offSub || cbSub);
 
     int                rc;
@@ -748 +750 @@
         AddrR3 = (vm_offset_t)R3PtrFixed;
 
+    if (cbSub == 0)
+        cbSub = pMemToMap->cb - offSub;
+
     /* Insert the pObject in the map. */
     vm_object_reference(pMemToMapFreeBSD->pObject);
     rc = vm_map_find(pProcMap,              /* Map to insert the object in */
                      pMemToMapFreeBSD->pObject, /* Object to map */
-                     0,                     /* Start offset in the object */
+                     offSub,                /* Start offset in the object */
                      &AddrR3,               /* Start address IN/OUT */
-                     pMemToMap->cb,         /* Size of the mapping */
+                     cbSub,                 /* Size of the mapping */
 #if __FreeBSD_version >= 1000055
                      0,                     /* Upper bound of the mapping */