1 files changed, 104 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/file/nocrt-open.cpp b/src/VBox/Runtime/common/file/nocrt-open.cpp
new file mode 100644
index 00000000..bd5000c8
--- /dev/null
+++ b/src/VBox/Runtime/common/file/nocrt-open.cpp
@@ -0,0 +1,104 @@
+/* $Id: nocrt-open.cpp $ */
+/** @file
+ * IPRT - No-CRT - read().
+ */
+
+/*
+ * Copyright (C) 2022-2023 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                                                                                                                 *
+*********************************************************************************************************************************/
+#define IPRT_NO_CRT_FOR_3RD_PARTY
+#include "internal/nocrt.h"
+#include <iprt/nocrt/fcntl.h>
+#include <iprt/nocrt/errno.h>
+#include <iprt/assert.h>
+#include <iprt/assertcompile.h>
+#include <iprt/errcore.h>
+#include <iprt/file.h>
+
+
+#undef open
+int RT_NOCRT(open)(const char *pszFilename, uint64_t fFlags, ... /*RTFMODE fMode*/)
+{
+    /*
+     * Make fFlags into proper RTFILE_O_XXX.
+     */
+    /* Make sure we got exactly one RTFILE_O_ACTION_MASK value: */
+    AssertCompile(O_CREAT == RTFILE_O_OPEN_CREATE); AssertCompile(RT_IS_POWER_OF_TWO(O_CREAT));
+    AssertCompile(O_EXCL == RTFILE_O_CREATE); AssertCompile(RT_IS_POWER_OF_TWO(O_EXCL));
+    if (fFlags & O_CREAT)
+    {
+        if (fFlags & O_EXCL)
+            fFlags &= ~(uint64_t)O_CREAT;
+        va_list va;
+        va_start(va, fFlags);
+        int fMode = va_arg(va, int);
+        va_end(va);
+        fFlags &= ~(uint64_t)RTFILE_O_CREATE_MODE_MASK;
+        fFlags |= ((uint64_t)fMode << RTFILE_O_CREATE_MODE_SHIFT) & RTFILE_O_CREATE_MODE_MASK;
+    }
+    else
+    {
+        if (fFlags & O_EXCL)
+            fFlags &= ~(uint64_t)O_EXCL;
+        fFlags |= RTFILE_O_OPEN;
+    }
+
+    /* Close on exec / inherit flag needs inverting: */
+    AssertCompile(O_CLOEXEC == RTFILE_O_INHERIT);
+    fFlags ^= O_CLOEXEC;
+
+    /* Add deny selection: */
+    fFlags |= RTFILE_O_DENY_NONE;
+
+    /*
+     * Try open it.
+     */
+    RTFILE hFile = NIL_RTFILE;
+    int rc = RTFileOpen(&hFile, pszFilename, fFlags);
+    if (RT_SUCCESS(rc))
+    {
+        intptr_t fd = RTFileToNative(hFile);
+        if ((int)fd == fd)
+            return (int)fd;
+
+        AssertMsgFailed(("fd=%zd (%p)\n", fd, fd));
+        RTFileClose(hFile);
+        rc = VERR_INTERNAL_ERROR;
+    }
+    errno = RTErrConvertToErrno(rc);
+    return -1;
+}
+RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL(open);
+