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diff --git a/src/VBox/Runtime/testcase/tstRTFileOpenEx-1.cpp b/src/VBox/Runtime/testcase/tstRTFileOpenEx-1.cpp
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+++ b/src/VBox/Runtime/testcase/tstRTFileOpenEx-1.cpp
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+/* $Id: tstRTFileOpenEx-1.cpp $ */
+/** @file
+ * IPRT Testcase - File Opening, extended API.
+ */
+
+/*
+ * Copyright (C) 2019-2022 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/file.h>
+
+#include <iprt/err.h>
+#include <iprt/path.h>
+#include <iprt/string.h>
+#include <iprt/test.h>
+
+
+/*********************************************************************************************************************************
+* Global Variables *
+*********************************************************************************************************************************/
+static const char g_szTestFile[] = "tstFileOpenEx-1.tst";
+
+
+/** @note FsPerf have a copy of this code. */
+static void tstOpenExTest(unsigned uLine, int cbExist, int cbNext, const char *pszFilename, uint64_t fAction,
+ int rcExpect, RTFILEACTION enmActionExpected)
+{
+ uint64_t const fCreateMode = (0644 << RTFILE_O_CREATE_MODE_SHIFT);
+ RTFILE hFile;
+ int rc;
+
+ /*
+ * File existence and size.
+ */
+ bool fOkay = false;
+ RTFSOBJINFO ObjInfo;
+ rc = RTPathQueryInfoEx(pszFilename, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK);
+ if (RT_SUCCESS(rc))
+ fOkay = cbExist == (int64_t)ObjInfo.cbObject;
+ else
+ fOkay = rc == VERR_FILE_NOT_FOUND && cbExist < 0;
+ if (!fOkay)
+ {
+ if (cbExist >= 0)
+ {
+ rc = RTFileOpen(&hFile, pszFilename, RTFILE_O_WRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_NONE | fCreateMode);
+ if (RT_SUCCESS(rc))
+ {
+ while (cbExist > 0)
+ {
+ int cbToWrite = (int)strlen(pszFilename);
+ if (cbToWrite > cbExist)
+ cbToWrite = cbExist;
+ rc = RTFileWrite(hFile, pszFilename, cbToWrite, NULL);
+ if (RT_FAILURE(rc))
+ {
+ RTTestIFailed("%u: RTFileWrite(%s,%#x) -> %Rrc\n", uLine, pszFilename, cbToWrite, rc);
+ break;
+ }
+ cbExist -= cbToWrite;
+ }
+
+ RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
+ }
+ else
+ RTTestIFailed("%u: RTFileDelete(%s) -> %Rrc\n", uLine, pszFilename, rc);
+
+ }
+ else
+ {
+ rc = RTFileDelete(pszFilename);
+ if (rc != VINF_SUCCESS && rc != VERR_FILE_NOT_FOUND)
+ RTTestIFailed("%u: RTFileDelete(%s) -> %Rrc\n", uLine, pszFilename, rc);
+ }
+ }
+
+ /*
+ * The actual test.
+ */
+ RTFILEACTION enmActuallyTaken = RTFILEACTION_END;
+ hFile = NIL_RTFILE;
+ rc = RTFileOpenEx(pszFilename, fAction | RTFILE_O_READWRITE | RTFILE_O_DENY_NONE | fCreateMode, &hFile, &enmActuallyTaken);
+ if ( rc != rcExpect
+ || enmActuallyTaken != enmActionExpected
+ || (RT_SUCCESS(rc) ? hFile == NIL_RTFILE : hFile != NIL_RTFILE))
+ RTTestIFailed("%u: RTFileOpenEx(%s, %#llx) -> %Rrc + %d (hFile=%p), expected %Rrc + %d\n",
+ uLine, pszFilename, fAction, rc, enmActuallyTaken, hFile, rcExpect, enmActionExpected);
+ if (RT_SUCCESS(rc))
+ {
+ if ( enmActionExpected == RTFILEACTION_REPLACED
+ || enmActionExpected == RTFILEACTION_TRUNCATED)
+ {
+ uint8_t abBuf[16];
+ rc = RTFileRead(hFile, abBuf, 1, NULL);
+ if (rc != VERR_EOF)
+ RTTestIFailed("%u: RTFileRead(%s,,1,) -> %Rrc, expected VERR_EOF\n", uLine, pszFilename, rc);
+ }
+
+ while (cbNext > 0)
+ {
+ int cbToWrite = (int)strlen(pszFilename);
+ if (cbToWrite > cbNext)
+ cbToWrite = cbNext;
+ rc = RTFileWrite(hFile, pszFilename, cbToWrite, NULL);
+ if (RT_FAILURE(rc))
+ {
+ RTTestIFailed("%u: RTFileWrite(%s,%#x) -> %Rrc\n", uLine, pszFilename, cbToWrite, rc);
+ break;
+ }
+ cbNext -= cbToWrite;
+ }
+
+ rc = RTFileClose(hFile);
+ if (RT_FAILURE(rc))
+ RTTestIFailed("%u: RTFileClose(%p) -> %Rrc\n", uLine, hFile, rc);
+ }
+}
+
+
+/** @note FsPerf have a copy of this code. */
+void tstFileActionTaken(RTTEST hTest)
+{
+ RTTestSub(hTest, "Action taken");
+
+ /*
+ * RTFILE_O_OPEN and RTFILE_O_OPEN_CREATE.
+ */
+ /* RTFILE_O_OPEN - non-existing: */
+ tstOpenExTest(__LINE__, -1, -1, g_szTestFile, RTFILE_O_OPEN, VERR_FILE_NOT_FOUND, RTFILEACTION_INVALID);
+
+ /* RTFILE_O_OPEN_CREATE - non-existing: */
+ tstOpenExTest(__LINE__, -1, -1, g_szTestFile, RTFILE_O_OPEN_CREATE, VINF_SUCCESS, RTFILEACTION_CREATED);
+
+ /* RTFILE_O_OPEN_CREATE - existing: */
+ tstOpenExTest(__LINE__, 0, 0, g_szTestFile, RTFILE_O_OPEN_CREATE, VINF_SUCCESS, RTFILEACTION_OPENED);
+
+ /* RTFILE_O_OPEN - existing: */
+ tstOpenExTest(__LINE__, 0, 0, g_szTestFile, RTFILE_O_OPEN, VINF_SUCCESS, RTFILEACTION_OPENED);
+
+ /*
+ * RTFILE_O_OPEN and RTFILE_O_OPEN_CREATE w/ TRUNCATE variations.
+ */
+ /* RTFILE_O_OPEN + TRUNCATE - existing zero sized file: */
+ tstOpenExTest(__LINE__, 0, 0, g_szTestFile, RTFILE_O_OPEN | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
+
+ /* RTFILE_O_OPEN_CREATE + TRUNCATE - existing zero sized file: */
+ tstOpenExTest(__LINE__, 0, 10, g_szTestFile, RTFILE_O_OPEN_CREATE | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
+
+ /* RTFILE_O_OPEN_CREATE + TRUNCATE - existing non-zero sized file: */
+ tstOpenExTest(__LINE__, 10, 10, g_szTestFile, RTFILE_O_OPEN_CREATE | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
+
+ /* RTFILE_O_OPEN + TRUNCATE - existing non-zero sized file: */
+ tstOpenExTest(__LINE__, 10, -1, g_szTestFile, RTFILE_O_OPEN | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
+
+ /* RTFILE_O_OPEN + TRUNCATE - non-existing file: */
+ tstOpenExTest(__LINE__, -1, -1, g_szTestFile, RTFILE_O_OPEN | RTFILE_O_TRUNCATE, VERR_FILE_NOT_FOUND, RTFILEACTION_INVALID);
+
+ /* RTFILE_O_OPEN_CREATE + TRUNCATE - non-existing file: */
+ tstOpenExTest(__LINE__, -1, 0, g_szTestFile, RTFILE_O_OPEN_CREATE | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_CREATED);
+
+ /*
+ * RTFILE_O_CREATE and RTFILE_O_CREATE_REPLACE.
+ */
+ /* RTFILE_O_CREATE_REPLACE - existing: */
+ tstOpenExTest(__LINE__, 0, -1, g_szTestFile, RTFILE_O_CREATE_REPLACE, VINF_SUCCESS, RTFILEACTION_REPLACED);
+
+ /* RTFILE_O_CREATE_REPLACE - non-existing: */
+ tstOpenExTest(__LINE__, -1, 0, g_szTestFile, RTFILE_O_CREATE_REPLACE, VINF_SUCCESS, RTFILEACTION_CREATED);
+
+ /* RTFILE_O_CREATE - existing: */
+ tstOpenExTest(__LINE__, 0, -1, g_szTestFile, RTFILE_O_CREATE, VERR_ALREADY_EXISTS, RTFILEACTION_ALREADY_EXISTS);
+
+ /* RTFILE_O_CREATE - non-existing: */
+ tstOpenExTest(__LINE__, -1, -1, g_szTestFile, RTFILE_O_CREATE, VINF_SUCCESS, RTFILEACTION_CREATED);
+
+ /*
+ * RTFILE_O_CREATE and RTFILE_O_CREATE_REPLACE w/ TRUNCATE variations.
+ */
+ /* RTFILE_O_CREATE+TRUNCATE - non-existing: */
+ tstOpenExTest(__LINE__, -1, 10, g_szTestFile, RTFILE_O_CREATE | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_CREATED);
+
+ /* RTFILE_O_CREATE+TRUNCATE - existing: */
+ tstOpenExTest(__LINE__, 10, 10, g_szTestFile, RTFILE_O_CREATE | RTFILE_O_TRUNCATE, VERR_ALREADY_EXISTS, RTFILEACTION_ALREADY_EXISTS);
+
+ /* RTFILE_O_CREATE_REPLACE+TRUNCATE - existing: */
+ tstOpenExTest(__LINE__, 10, -1, g_szTestFile, RTFILE_O_CREATE_REPLACE | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_REPLACED);
+
+ /* RTFILE_O_CREATE_REPLACE+TRUNCATE - non-existing: */
+ tstOpenExTest(__LINE__, -1, -1, g_szTestFile, RTFILE_O_CREATE_REPLACE | RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_CREATED);
+
+ RTTESTI_CHECK_RC(RTFileDelete(g_szTestFile), VINF_SUCCESS);
+}
+
+
+int main()
+{
+ RTTEST hTest;
+ int rc = RTTestInitAndCreate("tstRTFileOpenEx-1", &hTest);
+ if (rc)
+ return rc;
+ RTTestBanner(hTest);
+ tstFileActionTaken(hTest);
+ RTFileDelete(g_szTestFile);
+ return RTTestSummaryAndDestroy(hTest);
+}
+