Implement CancelIo properly.

files/file.c

@@ -1275,7 +1275,23 @@ BOOL FILE_StartAsync(HANDLE hFile, LPOVERLAPPED lpOverlapped, DWORD type, DWORD
  */
 BOOL WINAPI CancelIo(HANDLE handle)
 {
-    return FILE_StartAsync(handle, NULL, ASYNC_TYPE_NONE, 0, STATUS_CANCELLED);
+    async_private *ovp,*t;
+
+    TRACE("handle = %x\n",handle);
+
+    ovp = NtCurrentTeb()->pending_list;
+    while(ovp)
+    {
+        t = ovp->next;
+        if(FILE_StartAsync(handle, ovp->lpOverlapped, ovp->type, 0, STATUS_CANCELLED))
+        {
+            TRACE("overlapped = %p\n",ovp->lpOverlapped);
+            finish_async(ovp, STATUS_CANCELLED);
+        }
+        ovp = t;
+    }
+    WaitForMultipleObjectsEx(0,NULL,FALSE,1,TRUE);
+    return TRUE;
 }
 
 /***********************************************************************

include/file.h

@@ -49,6 +49,7 @@ typedef struct async_private
 } async_private;
 
 extern void WINAPI check_async_list(LPOVERLAPPED ov, DWORD status);
+extern void finish_async(struct async_private *ovp, DWORD status);
 
 /* locale-independent case conversion */
 inline static char FILE_tolower( char c )

scheduler/synchro.c

@@ -47,7 +47,7 @@ static void CALLBACK call_completion_routine(ULONG_PTR data)
     HeapFree(GetProcessHeap(), 0, ovp);
 }
 
-static void finish_async(async_private *ovp, DWORD status)
+void finish_async(async_private *ovp, DWORD status)
 {
     ovp->lpOverlapped->Internal=status;