1 files changed, 101 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/os2/memuserkernel-r0drv-os2.cpp b/src/VBox/Runtime/r0drv/os2/memuserkernel-r0drv-os2.cpp
new file mode 100644
index 00000000..eb4825a3
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/os2/memuserkernel-r0drv-os2.cpp
@@ -0,0 +1,101 @@
+/* $Id: memuserkernel-r0drv-os2.cpp $ */
+/** @file
+ * IPRT - User & Kernel Memory, Ring-0 Driver, OS/2.
+ */
+
+/*
+ * Copyright (C) 2009-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "the-os2-kernel.h"
+
+#include <iprt/mem.h>
+#include <iprt/errcore.h>
+
+
+RTR0DECL(int) RTR0MemUserCopyFrom(void *pvDst, RTR3PTR R3PtrSrc, size_t cb)
+{
+    int rc = KernCopyIn(pvDst, (void *)R3PtrSrc, cb);
+    if (RT_LIKELY(rc == 0))
+        return VINF_SUCCESS;
+    return VERR_ACCESS_DENIED;
+}
+
+
+RTR0DECL(int) RTR0MemUserCopyTo(RTR3PTR R3PtrDst, void const *pvSrc, size_t cb)
+{
+    int rc = KernCopyOut((void *)R3PtrDst, (void *)pvSrc, cb);
+    if (RT_LIKELY(rc == 0))
+        return VINF_SUCCESS;
+    return VERR_ACCESS_DENIED;
+}
+
+
+RTR0DECL(bool) RTR0MemUserIsValidAddr(RTR3PTR R3Ptr)
+{
+    /** @todo this is all wrong, but I'm too lazy to figure out how to make it
+     *        correct. Checking the user DS limit would work if it wasn't maxed
+     *        out by SDD, VPC or someone. The version (+SMP) would help on older
+     *        OS/2 versions where the limit is 512MB. */
+    return R3Ptr < UINT32_C(0xc0000000); /* 3GB */
+}
+
+
+RTR0DECL(bool) RTR0MemKernelIsValidAddr(void *pv)
+{
+    /** @todo this is all wrong, see RTR0MemUserIsValidAddr. */
+    return (uintptr_t)pv >= UINT32_C(0x20000000); /* 512MB */
+}
+
+
+RTR0DECL(bool) RTR0MemAreKrnlAndUsrDifferent(void)
+{
+    /** @todo this is all wrong, see RTR0MemUserIsValidAddr. */
+    return false;
+}
+
+
+RTR0DECL(int) RTR0MemKernelCopyFrom(void *pvDst, void const *pvSrc, size_t cb)
+{
+    RT_NOREF(pvDst, pvSrc, cb);
+    return VERR_NOT_SUPPORTED;
+}
+
+
+RTR0DECL(int) RTR0MemKernelCopyTo(void *pvDst, void const *pvSrc, size_t cb)
+{
+    RT_NOREF(pvDst, pvSrc, cb);
+    return VERR_NOT_SUPPORTED;
+}
+