1 files changed, 173 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstFileLock.cpp b/src/VBox/Runtime/testcase/tstFileLock.cpp
new file mode 100644
index 00000000..079768bb
--- /dev/null
+++ b/src/VBox/Runtime/testcase/tstFileLock.cpp
@@ -0,0 +1,173 @@
+/* $Id: tstFileLock.cpp $ */
+/** @file
+ * IPRT Testcase - File Locks.
+ */
+
+/*
+ * Copyright (C) 2006-2023 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/file.h>
+#include <iprt/stream.h>
+#include <iprt/err.h>
+#include <iprt/thread.h>  /* for RTThreadSleep() */
+#include <iprt/initterm.h>
+#include <iprt/string.h>
+
+#include <stdio.h>
+
+static char achTest1[] = "Test line 1\n";
+static char achTest2[] = "Test line 2\n";
+static char achTest3[] = "Test line 3\n";
+
+static bool fRun = false;
+
+/** @todo Create a tstFileLock-2 which doesn't require interaction and counts errors. */
+
+int main()
+{
+    RTR3InitExeNoArguments(0);
+    RTPrintf("tstFileLock: TESTING\n");
+
+    RTFILE File;
+    int rc = RTFileOpen(&File, "tstLock.tst", RTFILE_O_READWRITE | RTFILE_O_OPEN | RTFILE_O_DENY_NONE);
+    RTPrintf("File open: rc=%Rrc\n", rc);
+    if (RT_FAILURE(rc))
+    {
+        if (rc != VERR_FILE_NOT_FOUND && rc != VERR_OPEN_FAILED)
+        {
+            RTPrintf("FATAL\n");
+            return 1;
+        }
+
+        rc = RTFileOpen(&File, "tstLock.tst", RTFILE_O_READWRITE | RTFILE_O_CREATE | RTFILE_O_DENY_NONE);
+        RTPrintf("File create: rc=%Rrc\n", rc);
+        if (RT_FAILURE(rc))
+        {
+            RTPrintf("FATAL\n");
+            return 2;
+        }
+        fRun = true;
+    }
+
+    /* grow file a little */
+    rc = RTFileSetSize(File, fRun ? 2048 : 20480);
+    RTPrintf("File size: rc=%Rrc\n", rc);
+
+    int buf;
+    /* read test. */
+    rc = RTFileRead(File, &buf, sizeof(buf), NULL);
+    RTPrintf("Read: rc=%Rrc\n", rc);
+
+    /* write test. */
+    rc = RTFileWrite(File, achTest1, strlen(achTest1), NULL);
+    RTPrintf("Write: rc=%Rrc\n", rc);
+
+    /* lock: read, non-blocking. */
+    rc = RTFileLock(File, RTFILE_LOCK_READ | RTFILE_LOCK_IMMEDIATELY, 0, _4G);
+    RTPrintf("Lock: read, non-blocking, rc=%Rrc\n", rc);
+    bool fl = RT_SUCCESS(rc);
+
+    /* read test. */
+    rc = RTFileRead(File, &buf, sizeof(buf), NULL);
+    RTPrintf("Read: rc=%Rrc\n", rc);
+
+    /* write test. */
+    rc = RTFileWrite(File, achTest2, strlen(achTest2), NULL);
+    RTPrintf("Write: rc=%Rrc\n", rc);
+    RTPrintf("Lock test will change in three seconds\n");
+    for (int i = 0; i < 3; i++)
+    {
+        RTThreadSleep(1000);
+        RTPrintf(".");
+    }
+    RTPrintf("\n");
+
+    /* change lock: write, non-blocking. */
+    rc = RTFileLock(File, RTFILE_LOCK_WRITE | RTFILE_LOCK_IMMEDIATELY, 0, _4G);
+    RTPrintf("Change lock: write, non-blocking, rc=%Rrc\n", rc);
+    RTPrintf("Test will unlock in three seconds\n");
+    for (int i = 0; i < 3; i++)
+    {
+        RTThreadSleep(1000);
+        RTPrintf(".");
+    }
+    RTPrintf("\n");
+
+    /* remove lock. */
+    if (fl)
+    {
+        fl = false;
+        rc = RTFileUnlock(File, 0, _4G);
+        RTPrintf("Unlock: rc=%Rrc\n", rc);
+        RTPrintf("Write test will lock in three seconds\n");
+        for (int i = 0; i < 3; i++)
+        {
+            RTThreadSleep(1000);
+            RTPrintf(".");
+        }
+        RTPrintf("\n");
+    }
+
+    /* lock: write, non-blocking. */
+    rc = RTFileLock(File, RTFILE_LOCK_WRITE | RTFILE_LOCK_IMMEDIATELY, 0, _4G);
+    RTPrintf("Lock: write, non-blocking, rc=%Rrc\n", rc);
+    fl = RT_SUCCESS(rc);
+
+    /* grow file test */
+    rc = RTFileSetSize(File, fRun ? 2048 : 20480);
+    RTPrintf("File size: rc=%Rrc\n", rc);
+
+    /* read test. */
+    rc = RTFileRead(File, &buf, sizeof(buf), NULL);
+    RTPrintf("Read: rc=%Rrc\n", rc);
+
+    /* write test. */
+    rc = RTFileWrite(File, achTest3, strlen(achTest3), NULL);
+    RTPrintf("Write: rc=%Rrc\n", rc);
+    RTPrintf("Continuing to next test in three seconds\n");
+    for (int i = 0; i < 3; i++)
+    {
+        RTThreadSleep(1000);
+        RTPrintf(".");
+    }
+    RTPrintf("\n");
+
+    RTFileClose(File);
+    RTFileDelete("tstLock.tst");
+
+
+    RTPrintf("tstFileLock: I've no recollection of this testcase succeeding or not, sorry.\n");
+    return 0;
+}