Index: /trunk/include/iprt/err.h
===================================================================
--- /trunk/include/iprt/err.h	(revision 39723)
+++ /trunk/include/iprt/err.h	(revision 39724)
@@ -1689,4 +1689,6 @@
 /** Power off is not supported by the hardware or the OS. */
 #define VERR_SYS_CANNOT_POWER_OFF                   (-22400)
+/** Shutdown failed. */
+#define VERR_SYS_SHUTDOWN_FAILED                    (-22401)
 /** @} */
 
Index: /trunk/src/VBox/Runtime/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Runtime/Makefile.kmk	(revision 39723)
+++ /trunk/src/VBox/Runtime/Makefile.kmk	(revision 39724)
@@ -591,5 +591,4 @@
  	generic/RTSemEventMultiWait-2-ex-generic.cpp \
  	generic/RTSemEventMultiWaitNoResume-2-ex-generic.cpp \
-	generic/RTSystemShutdown-generic.cpp \
 	generic/RTTimeLocalNow-generic.cpp \
 	generic/RTTimerCreate-generic.cpp \
@@ -608,4 +607,5 @@
 	r3/linux/RTProcIsRunningByName-linux.cpp \
 	r3/linux/RTSystemQueryDmiString-linux.cpp \
+	r3/linux/RTSystemShutdown-linux.cpp \
 	r3/posix/RTFileQueryFsSizes-posix.cpp \
 	r3/posix/RTHandleGetStandard-posix.cpp \
Index: /trunk/src/VBox/Runtime/r3/linux/RTSystemShutdown-linux.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r3/linux/RTSystemShutdown-linux.cpp	(revision 39724)
+++ /trunk/src/VBox/Runtime/r3/linux/RTSystemShutdown-linux.cpp	(revision 39724)
@@ -0,0 +1,98 @@
+/* $Id$ */
+/** @file
+ * IPRT - RTSystemShutdown, linux implementation.
+ */
+
+/*
+ * Copyright (C) 2012 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <iprt/system.h>
+#include "internal/iprt.h"
+
+#include <iprt/assert.h>
+#include <iprt/env.h>
+#include <iprt/err.h>
+#include <iprt/process.h>
+#include <iprt/string.h>
+
+
+RTDECL(int) RTSystemShutdown(RTMSINTERVAL cMsDelay, uint32_t fFlags, const char *pszLogMsg)
+{
+    AssertPtrReturn(pszLogMsg, VERR_INVALID_POINTER);
+    AssertReturn(!(fFlags & ~RTSYSTEM_SHUTDOWN_VALID_MASK), VERR_INVALID_PARAMETER);
+
+    /*
+     * Assemble the argument vector.
+     */
+    int         iArg = 0;
+    const char *apszArgs[5];
+
+    apszArgs[iArg++] = "/sbin/shutdown";
+    switch (fFlags & RTSYSTEM_SHUTDOWN_ACTION_MASK)
+    {
+        case RTSYSTEM_SHUTDOWN_HALT:
+            apszArgs[iArg++] = "--halt";
+            break;
+        case RTSYSTEM_SHUTDOWN_REBOOT:
+            apszArgs[iArg++] = "--reboot";
+            break;
+        case RTSYSTEM_SHUTDOWN_POWER_OFF:
+        case RTSYSTEM_SHUTDOWN_POWER_OFF_HALT:
+            apszArgs[iArg++] = "--poweroff";
+            break;
+    }
+
+    char szWhen[80];
+    if (cMsDelay < 500)
+        strcpy(szWhen, "now");
+    else
+        RTStrPrintf(szWhen, sizeof(szWhen), "%u", (unsigned)((cMsDelay + 499) / 1000));
+    apszArgs[iArg++] = szWhen;
+
+    apszArgs[iArg++] = pszLogMsg;
+
+
+    /*
+     * Start the shutdown process and wait for it to complete.
+     */
+    RTPROCESS hProc;
+    int rc = RTProcCreate(apszArgs[0], apszArgs, RTENV_DEFAULT, 0 /*fFlags*/, &hProc);
+    if (RT_FAILURE(rc))
+        return rc;
+
+    RTPROCSTATUS ProcStatus;
+    rc = RTProcWait(hProc, RTPROCWAIT_FLAGS_BLOCK, &ProcStatus);
+    if (RT_SUCCESS(rc))
+    {
+        if (   ProcStatus.enmReason != RTPROCEXITREASON_NORMAL
+            || ProcStatus.iStatus   != 0)
+            rc = VERR_SYS_SHUTDOWN_FAILED;
+    }
+
+    return rc;
+}
+RT_EXPORT_SYMBOL(RTSystemShutdown);
+
+