1 files changed, 108 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/win/errvars-win.cpp b/src/VBox/Runtime/r3/win/errvars-win.cpp
new file mode 100644
index 00000000..6d8b4814
--- /dev/null
+++ b/src/VBox/Runtime/r3/win/errvars-win.cpp
@@ -0,0 +1,108 @@
+/* $Id: errvars-win.cpp $ */
+/** @file
+ * IPRT - Save and Restore Error Variables, Windows Ring-3.
+ */
+
+/*
+ * Copyright (C) 2011-2023 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 <iprt/win/winsock2.h>
+#ifndef IPRT_NO_CRT
+# include <errno.h>
+#endif
+
+#include <iprt/errcore.h>
+#include "internal/iprt.h"
+
+#include <iprt/assert.h>
+#include "internal/magics.h"
+#include "internal-r3-win.h"
+
+
+
+RTDECL(PRTERRVARS) RTErrVarsSave(PRTERRVARS pVars)
+{
+    pVars->ai32Vars[0] = RTERRVARS_MAGIC;
+    pVars->ai32Vars[1] = GetLastError();
+    pVars->ai32Vars[2] = g_pfnWSAGetLastError ? g_pfnWSAGetLastError() : WSANOTINITIALISED;
+#ifndef IPRT_NO_CRT
+    pVars->ai32Vars[3] = errno;
+#endif
+    return pVars;
+}
+
+
+RTDECL(void) RTErrVarsRestore(PCRTERRVARS pVars)
+{
+    AssertReturnVoid(pVars->ai32Vars[0] == RTERRVARS_MAGIC);
+#ifndef IPRT_NO_CRT
+    errno = pVars->ai32Vars[3];
+#endif
+    if (   pVars->ai32Vars[2] != WSANOTINITIALISED
+        && g_pfnWSASetLastError)
+        g_pfnWSASetLastError(pVars->ai32Vars[2]);
+    SetLastError(pVars->ai32Vars[1]);
+}
+
+
+RTDECL(bool) RTErrVarsAreEqual(PCRTERRVARS pVars1, PCRTERRVARS pVars2)
+{
+    Assert(pVars1->ai32Vars[0] == RTERRVARS_MAGIC);
+    Assert(pVars2->ai32Vars[0] == RTERRVARS_MAGIC);
+
+    return pVars1->ai32Vars[0] == pVars2->ai32Vars[0]
+        && pVars1->ai32Vars[1] == pVars2->ai32Vars[1]
+        && pVars1->ai32Vars[2] == pVars2->ai32Vars[2]
+#ifndef IPRT_NO_CRT
+        && pVars1->ai32Vars[3] == pVars2->ai32Vars[3]
+#endif
+        ;
+}
+
+
+RTDECL(bool) RTErrVarsHaveChanged(PCRTERRVARS pVars)
+{
+    Assert(pVars->ai32Vars[0] == RTERRVARS_MAGIC);
+
+    return pVars->ai32Vars[0] != RTERRVARS_MAGIC
+        || (uint32_t)pVars->ai32Vars[1] != GetLastError()
+        || pVars->ai32Vars[2] != (g_pfnWSAGetLastError ? g_pfnWSAGetLastError() : WSANOTINITIALISED)
+#ifndef IPRT_NO_CRT
+        || pVars->ai32Vars[3] != errno
+#endif
+        ;
+
+}
+