Changeset 4155 in vbox for trunk/include/iprt/memobj.h

Timestamp:

Aug 15, 2007 7:41:26 PM (18 years ago)

Author:

vboxsync

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

23645

Message:

RTR0MemGetAddressR3 & RTR0MemObjLockUser. Linux memobj impl.

File:

• trunk/include/iprt/memobj.h (modified) (3 diffs)

trunk/include/iprt/memobj.h

@@ -48 +48 @@
 
 /**
+ * Gets the ring-3 address of a ring-0 memory object.
+ *
+ * This only applies to ring-0 memory object with ring-3 mappings of some kind, i.e.
+ * locked user memory, reserved user address space and user mappings. This API should
+ * not be used on any other objects.
+ *
+ * @returns The address of the memory object.
+ * @returns NIL_RTR3PTR if the handle is invalid or if it's not an object with a ring-3 mapping.
+ *          Strict builds will assert in both cases.
+ * @param   MemObj  The ring-0 memory object handle.
+ */
+RTR0DECL(RTR3PTR) RTR0MemObjAddressR3(RTR0MEMOBJ MemObj);
+
+/**
  * Gets the size of a ring-0 memory object.
  *
@@ -119 +133 @@
  * @returns IPRT status code.
  * @param   pMemObj         Where to store the ring-0 memory object handle.
- * @param   pv              User virtual address. This is rounded down to a page boundrary.
+ * @param   R3Ptr           User virtual address. This is rounded down to a page boundrary.
  * @param   cb              Number of bytes to lock. This is rounded up to nearest page boundrary.
  * @param   R0Process       The process to lock pages in. NIL_R0PROCESS is an alias for the current one.
@@ -125 +139 @@
  * @remark  RTR0MemGetAddressR3() and RTR0MemGetAddress() will return the rounded down address.
  */
-RTR0DECL(int) RTR0MemObjLockUser(PRTR0MEMOBJ pMemObj, void *pv, size_t cb, RTR0PROCESS R0Process);
+RTR0DECL(int) RTR0MemObjLockUser(PRTR0MEMOBJ pMemObj, RTR3PTR R3Ptr, size_t cb, RTR0PROCESS R0Process);
 
 /**