Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 666 insertions, 0 deletions

diff --git a/src/VBox/Runtime/r3/init.cpp b/src/VBox/Runtime/r3/init.cpp
new file mode 100644
index 00000000..5647795e
--- /dev/null
+++ b/src/VBox/Runtime/r3/init.cpp
@@ -0,0 +1,666 @@
+/* $Id: init.cpp $ */
+/** @file
+ * IPRT - Init Ring-3.
+ */
+
+/*
+ * Copyright (C) 2006-2022 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                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP RTLOGGROUP_DEFAULT
+#include <iprt/types.h>                 /* darwin: UINT32_C and others. */
+
+#ifdef RT_OS_WINDOWS
+# include <iprt/win/windows.h>
+#else
+# include <unistd.h>
+# ifndef RT_OS_OS2
+#  include <pthread.h>
+#  include <signal.h>
+#  include <errno.h>
+#  define IPRT_USE_SIG_CHILD_DUMMY
+# endif
+#endif
+#ifdef RT_OS_OS2
+# include <InnoTekLIBC/fork.h>
+# define INCL_DOSMISC
+# include <os2.h>
+#endif
+#ifndef IPRT_NO_CRT
+# include <locale.h>
+#endif
+
+#include <iprt/initterm.h>
+#include <iprt/asm.h>
+#include <iprt/assert.h>
+#include <iprt/env.h>
+#include <iprt/errcore.h>
+#include <iprt/log.h>
+#include <iprt/mem.h>
+#include <iprt/path.h>
+#include <iprt/time.h>
+#include <iprt/string.h>
+#include <iprt/param.h>
+#ifdef RT_OS_WINDOWS
+# include <iprt/getopt.h>
+# include <iprt/utf16.h>
+#endif
+#if !defined(IN_GUEST) && !defined(RT_NO_GIP)
+# include <iprt/file.h>
+# include <VBox/sup.h>
+#endif
+#include <stdlib.h>
+
+#include "init.h"
+#include "internal/alignmentchecks.h"
+#include "internal/initterm.h"
+#include "internal/path.h"
+#include "internal/process.h"
+#include "internal/thread.h"
+#include "internal/time.h"
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** The IPRT init flags. */
+static uint32_t             g_fInitFlags;
+
+/** The argument count of the program.  */
+static int                  g_crtArgs = -1;
+/** The arguments of the program (UTF-8).  This is "leaked". */
+static char **              g_papszrtArgs;
+/** The original argument vector of the program. */
+static char **              g_papszrtOrgArgs;
+
+#ifdef IPRT_WITH_ALIGNMENT_CHECKS
+/**
+ * Whether alignment checks are enabled.
+ * This is set if the environment variable IPRT_ALIGNMENT_CHECKS is 1.
+ */
+RTDATADECL(bool) g_fRTAlignmentChecks = false;
+#endif
+
+
+#if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD) || defined(RT_OS_NETBSD) || defined(RT_OS_HAIKU) \
+ || defined(RT_OS_LINUX)  || defined(RT_OS_OS2)     || defined(RT_OS_SOLARIS) /** @todo add host init hooks everywhere. */
+/* Stubs */
+DECLHIDDEN(int)  rtR3InitNativeFirst(uint32_t fFlags)     { RT_NOREF_PV(fFlags); return VINF_SUCCESS; }
+DECLHIDDEN(int)  rtR3InitNativeFinal(uint32_t fFlags)     { RT_NOREF_PV(fFlags); return VINF_SUCCESS; }
+DECLHIDDEN(void) rtR3InitNativeObtrusive(uint32_t fFlags) { RT_NOREF_PV(fFlags); }
+#endif
+
+
+/**
+ * atexit callback.
+ *
+ * This makes sure any loggers are flushed and will later also work the
+ * termination callback chain.
+ */
+static void rtR3ExitCallback(void) RT_NOTHROW_DEF
+{
+    ASMAtomicWriteBool(&g_frtAtExitCalled, true);
+
+    if (g_crtR3Users > 0)
+    {
+        PRTLOGGER pLogger = RTLogGetDefaultInstance();
+        if (pLogger)
+            RTLogFlush(pLogger);
+
+        pLogger = RTLogRelGetDefaultInstance();
+        if (pLogger)
+            RTLogFlush(pLogger);
+    }
+}
+
+
+#ifndef RT_OS_WINDOWS
+/**
+ * Fork callback, child context.
+ */
+static void rtR3ForkChildCallback(void)
+{
+    g_ProcessSelf = getpid();
+}
+#endif /* RT_OS_WINDOWS */
+
+#ifdef RT_OS_OS2
+/** Fork completion callback for OS/2.  Only called in the child. */
+static void rtR3ForkOs2ChildCompletionCallback(void *pvArg, int rc, __LIBC_FORKCTX enmCtx)
+{
+    Assert(enmCtx == __LIBC_FORK_CTX_CHILD); NOREF(enmCtx);
+    NOREF(pvArg);
+
+    if (!rc)
+        rtR3ForkChildCallback();
+}
+
+/** Low-level fork callback for OS/2.  */
+int rtR3ForkOs2Child(__LIBC_PFORKHANDLE pForkHandle, __LIBC_FORKOP enmOperation)
+{
+    if (enmOperation == __LIBC_FORK_OP_EXEC_CHILD)
+        return pForkHandle->pfnCompletionCallback(pForkHandle, rtR3ForkOs2ChildCompletionCallback, NULL, __LIBC_FORK_CTX_CHILD);
+    return 0;
+}
+
+# define static static volatile /** @todo _FORK_CHILD1 causes unresolved externals in optimized builds. Fix macro. */
+_FORK_CHILD1(0, rtR3ForkOs2Child);
+# undef static
+#endif /* RT_OS_OS2 */
+
+
+
+/**
+ * Internal worker which initializes or re-initializes the
+ * program path, name and directory globals.
+ *
+ * @returns IPRT status code.
+ * @param   pszProgramPath  The program path, NULL if not specified.
+ */
+static int rtR3InitProgramPath(const char *pszProgramPath)
+{
+    /*
+     * We're reserving 32 bytes here for file names as what not.
+     */
+    if (!pszProgramPath)
+    {
+        int rc = rtProcInitExePath(g_szrtProcExePath, sizeof(g_szrtProcExePath) - 32);
+        if (RT_FAILURE(rc))
+            return rc;
+    }
+    else
+    {
+        size_t cch = strlen(pszProgramPath);
+        Assert(cch > 1);
+        AssertMsgReturn(cch < sizeof(g_szrtProcExePath) - 32, ("%zu\n", cch), VERR_BUFFER_OVERFLOW);
+        memcpy(g_szrtProcExePath, pszProgramPath, cch + 1);
+    }
+
+    /*
+     * Parse the name.
+     */
+    ssize_t offName;
+    g_cchrtProcExePath = RTPathParseSimple(g_szrtProcExePath, &g_cchrtProcExeDir, &offName, NULL);
+    g_offrtProcName = offName;
+    return VINF_SUCCESS;
+}
+
+
+#ifdef RT_OS_WINDOWS
+/**
+ * Checks the two argument vectors contains the same strings.
+ */
+DECLINLINE(bool) rtR3InitArgvEquals(int cArgs, char **papszArgs1, char **papszArgs2)
+{
+    if (papszArgs1 != papszArgs2)
+        while (cArgs-- > 0)
+            if (strcmp(papszArgs1[cArgs], papszArgs2[cArgs]) != 0)
+                return false;
+    return true;
+}
+#endif
+
+
+/**
+ * Internal worker which initializes or re-initializes the
+ * program path, name and directory globals.
+ *
+ * @returns IPRT status code.
+ * @param   fFlags          Flags, see RTR3INIT_XXX.
+ * @param   cArgs           Pointer to the argument count.
+ * @param   ppapszArgs      Pointer to the argument vector pointer. NULL
+ *                          allowed if @a cArgs is 0.
+ */
+static int rtR3InitArgv(uint32_t fFlags, int cArgs, char ***ppapszArgs)
+{
+    NOREF(fFlags);
+    if (cArgs)
+    {
+        AssertPtr(ppapszArgs);
+        AssertPtr(*ppapszArgs);
+        char **papszOrgArgs = *ppapszArgs;
+
+        /*
+         * Normally we should only be asked to convert arguments once.  If we
+         * are though, it should be the already convered arguments.
+         */
+        if (g_crtArgs != -1)
+        {
+            AssertReturn(   g_crtArgs == cArgs
+                         && g_papszrtArgs == papszOrgArgs,
+                         VERR_WRONG_ORDER); /* only init once! */
+            return VINF_SUCCESS;
+        }
+
+#if !defined(IPRT_NO_CRT) || !defined(RT_OS_WINDOWS)
+        if (!(fFlags & RTR3INIT_FLAGS_UTF8_ARGV))
+        {
+            /*
+             * Convert the arguments.
+             */
+            char **papszArgs;
+
+# ifdef RT_OS_WINDOWS
+            /* HACK ALERT! Try convert from unicode versions if possible.
+               Unfortunately for us, __wargv is only initialized if we have a unicode
+               main function.  So, use getoptarv.cpp code to do the conversions and
+               hope it gives us the same result. (CommandLineToArgvW was not in NT 3.1.) */
+            if (   cArgs == __argc
+                && rtR3InitArgvEquals(cArgs, papszOrgArgs, __argv))
+            {
+                char *pszCmdLine = NULL;
+                int rc = RTUtf16ToUtf8Tag(GetCommandLineW(), &pszCmdLine, "will-leak:rtR3InitArgv");
+                AssertRCReturn(rc, rc);
+
+                int cArgsFromCmdLine = -1;
+                rc = RTGetOptArgvFromString(&papszArgs, &cArgsFromCmdLine, pszCmdLine,
+                                            RTGETOPTARGV_CNV_QUOTE_MS_CRT | RTGETOPTARGV_CNV_MODIFY_INPUT, NULL);
+                AssertMsgRCReturn(rc, ("pszCmdLine='%s' rc=%Rrc\n", pszCmdLine, rc), rc);
+                AssertMsg(cArgsFromCmdLine == cArgs,
+                          ("cArgsFromCmdLine=%d cArgs=%d pszCmdLine='%s' rc=%Rrc\n", cArgsFromCmdLine, cArgs, pszCmdLine));
+            }
+            else
+# endif
+            {
+                papszArgs = (char **)RTMemAllocZTag((cArgs + 1) * sizeof(char *), "will-leak:rtR3InitArgv");
+                if (!papszArgs)
+                    return VERR_NO_MEMORY;
+
+                for (int i = 0; i < cArgs; i++)
+                {
+                    int rc = RTStrCurrentCPToUtf8(&papszArgs[i], papszOrgArgs[i]);
+                    if (RT_FAILURE(rc))
+                    {
+                        while (i--)
+                            RTStrFree(papszArgs[i]);
+                        RTMemFree(papszArgs);
+                        return rc;
+                    }
+                }
+            }
+
+            papszArgs[cArgs] = NULL;
+
+            g_papszrtOrgArgs = papszOrgArgs;
+            g_papszrtArgs    = papszArgs;
+            g_crtArgs        = cArgs;
+
+            *ppapszArgs = papszArgs;
+        }
+        else
+#endif /* !IPRT_NO_CRT || !RT_OS_WINDOWS */
+        {
+            /*
+             * The arguments are already UTF-8, no conversion needed.
+             */
+            g_papszrtOrgArgs = papszOrgArgs;
+            g_papszrtArgs    = papszOrgArgs;
+            g_crtArgs        = cArgs;
+        }
+    }
+
+    return VINF_SUCCESS;
+}
+
+
+#ifdef IPRT_USE_SIG_CHILD_DUMMY
+/**
+ * Dummy SIGCHILD handler.
+ *
+ * Assigned on rtR3Init only when SIGCHILD handler is set SIGIGN or SIGDEF to
+ * ensure waitpid works properly for the terminated processes.
+ */
+static void rtR3SigChildHandler(int iSignal)
+{
+    NOREF(iSignal);
+}
+#endif /* IPRT_USE_SIG_CHILD_DUMMY */
+
+
+/**
+ * rtR3Init worker.
+ */
+static int rtR3InitBody(uint32_t fFlags, int cArgs, char ***ppapszArgs, const char *pszProgramPath)
+{
+    /*
+     * Early native initialization.
+     */
+    int rc = rtR3InitNativeFirst(fFlags);
+    AssertMsgRCReturn(rc, ("rtR3InitNativeFirst failed with %Rrc\n", rc), rc);
+
+    /*
+     * Disable error popups.
+     */
+#if defined(RT_OS_OS2) /** @todo move to private code. */
+    DosError(FERR_DISABLEHARDERR);
+#endif
+
+#ifndef IPRT_NO_CRT
+    /*
+     * Init C runtime locale before we do anything that may end up converting
+     * paths or we'll end up using the "C" locale for path conversion.
+     */
+    setlocale(LC_CTYPE, "");
+#endif
+
+    /*
+     * The Process ID.
+     */
+#ifdef _MSC_VER
+    g_ProcessSelf = GetCurrentProcessId(); /* since NT 3.1, not 3.51+ as listed on geoffchappell.com */
+#else
+    g_ProcessSelf = getpid();
+#endif
+
+    /*
+     * Save the init flags.
+     */
+    g_fInitFlags |= fFlags;
+
+#if !defined(IN_GUEST) && !defined(RT_NO_GIP)
+# ifdef VBOX
+    /*
+     * This MUST be done as the very first thing, before any file is opened.
+     * The log is opened on demand, but the first log entries may be caused
+     * by rtThreadInit() below.
+     */
+    const char *pszDisableHostCache = getenv("VBOX_DISABLE_HOST_DISK_CACHE");
+    if (    pszDisableHostCache != NULL
+        &&  *pszDisableHostCache
+        &&  strcmp(pszDisableHostCache, "0") != 0)
+    {
+        RTFileSetForceFlags(RTFILE_O_WRITE, RTFILE_O_WRITE_THROUGH, 0);
+        RTFileSetForceFlags(RTFILE_O_READWRITE, RTFILE_O_WRITE_THROUGH, 0);
+    }
+# endif  /* VBOX */
+#endif /* !IN_GUEST && !RT_NO_GIP */
+
+    /*
+     * Thread Thread database and adopt the caller thread as 'main'.
+     * This must be done before everything else or else we'll call into threading
+     * without having initialized TLS entries and suchlike.
+     */
+    rc = rtThreadInit();
+    AssertMsgRCReturn(rc, ("Failed to initialize threads, rc=%Rrc!\n", rc), rc);
+
+    /*
+     * The executable path before SUPLib (windows requirement).
+     */
+    rc = rtR3InitProgramPath(pszProgramPath);
+    AssertLogRelMsgRCReturn(rc, ("Failed to get executable directory path, rc=%Rrc!\n", rc), rc);
+
+#if !defined(IN_GUEST) && !defined(RT_NO_GIP)
+    /*
+     * Initialize SUPLib here so the GIP can get going as early as possible
+     * (improves accuracy for the first client).
+     */
+    if (fFlags & (RTR3INIT_FLAGS_SUPLIB | RTR3INIT_FLAGS_TRY_SUPLIB))
+    {
+        if (!(fFlags & ((SUPR3INIT_F_UNRESTRICTED | SUPR3INIT_F_LIMITED) << RTR3INIT_FLAGS_SUPLIB_SHIFT)))
+            g_fInitFlags |= fFlags |= SUPR3INIT_F_UNRESTRICTED << RTR3INIT_FLAGS_SUPLIB_SHIFT;
+        rc = SUPR3InitEx(fFlags >> RTR3INIT_FLAGS_SUPLIB_SHIFT, NULL /*ppSession*/);
+        AssertMsgReturn(RT_SUCCESS(rc) || (fFlags & RTR3INIT_FLAGS_TRY_SUPLIB),
+                        ("Failed to initialize the support library, rc=%Rrc!\n", rc), rc);
+    }
+#endif
+
+    /*
+     * Convert arguments.
+     */
+    rc = rtR3InitArgv(fFlags, cArgs, ppapszArgs);
+    AssertLogRelMsgRCReturn(rc, ("Failed to convert the arguments, rc=%Rrc!\n", rc), rc);
+
+#if !defined(IN_GUEST) && !defined(RT_NO_GIP)
+    /*
+     * The threading is initialized, so we can safely sleep a bit if GIP
+     * needs some time to start updating itself.  Currently limited to
+     * the first mapping of GIP (u32TransactionId <= 4), quite possible we
+     * could just ditch this now.
+     */
+    /** @todo consider dropping this... */
+    PSUPGLOBALINFOPAGE pGip;
+    if (   (fFlags & (RTR3INIT_FLAGS_SUPLIB | RTR3INIT_FLAGS_TRY_SUPLIB))
+        && (pGip = g_pSUPGlobalInfoPage) != NULL
+        && pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC)
+    {
+        PSUPGIPCPU pGipCpu = SUPGetGipCpuPtr(pGip);
+        if (   pGipCpu
+            && pGipCpu->u32TransactionId <= 4)
+        {
+            RTThreadSleep(pGip->u32UpdateIntervalNS / RT_NS_1MS + 2);
+            RTTimeNanoTS();
+        }
+    }
+#endif
+
+    /*
+     * Init the program start timestamp TS.
+     * Do that here to be sure that the GIP time was properly updated the 1st time.
+     */
+    g_u64ProgramStartNanoTS = RTTimeNanoTS();
+
+    /*
+     * The remainder cannot easily be undone, so it has to go last.
+     */
+
+    /* Fork and exit callbacks. */
+#if !defined(RT_OS_WINDOWS) && !defined(RT_OS_OS2)
+    rc = pthread_atfork(NULL, NULL, rtR3ForkChildCallback);
+    AssertMsg(rc == 0, ("%d\n", rc));
+#endif
+    atexit(rtR3ExitCallback);
+
+#ifdef IPRT_USE_SIG_CHILD_DUMMY
+    /*
+     * SIGCHLD must not be ignored (that's default), otherwise posix compliant waitpid
+     * implementations won't work right.
+     */
+    for (;;)
+    {
+        struct sigaction saOld;
+        rc = sigaction(SIGCHLD, 0, &saOld);         AssertMsg(rc == 0, ("%d/%d\n", rc, errno));
+        if (    rc != 0
+            ||  (saOld.sa_flags & SA_SIGINFO)
+            || (   saOld.sa_handler != SIG_IGN
+                && saOld.sa_handler != SIG_DFL)
+           )
+            break;
+
+        /* Try install dummy handler. */
+        struct sigaction saNew = saOld;
+        saNew.sa_flags   = SA_NOCLDSTOP | SA_RESTART;
+        saNew.sa_handler = rtR3SigChildHandler;
+        rc = sigemptyset(&saNew.sa_mask);           AssertMsg(rc == 0, ("%d/%d\n", rc, errno));
+        struct sigaction saOld2;
+        rc = sigaction(SIGCHLD, &saNew, &saOld2);   AssertMsg(rc == 0, ("%d/%d\n", rc, errno));
+        if (    rc != 0
+            ||  (   saOld2.sa_handler == saOld.sa_handler
+                 && !(saOld2.sa_flags & SA_SIGINFO))
+           )
+            break;
+
+        /* Race during dynamic load, restore and try again... */
+        sigaction(SIGCHLD, &saOld2, NULL);
+        RTThreadYield();
+    }
+#endif /* IPRT_USE_SIG_CHILD_DUMMY */
+
+#ifdef IPRT_WITH_ALIGNMENT_CHECKS
+    /*
+     * Enable alignment checks.
+     */
+    const char *pszAlignmentChecks = RTEnvGet("IPRT_ALIGNMENT_CHECKS"); /** @todo add RTEnvGetBool */
+    g_fRTAlignmentChecks = pszAlignmentChecks != NULL
+                        && pszAlignmentChecks[0] == '1'
+                        && pszAlignmentChecks[1] == '\0';
+    if (g_fRTAlignmentChecks)
+        IPRT_ALIGNMENT_CHECKS_ENABLE();
+#endif
+
+    /*
+     * Final native initialization.
+     */
+    rc = rtR3InitNativeFinal(fFlags);
+    AssertMsgRCReturn(rc, ("rtR3InitNativeFinal failed with %Rrc\n", rc), rc);
+
+    return VINF_SUCCESS;
+}
+
+
+/**
+ * Internal initialization worker.
+ *
+ * @returns IPRT status code.
+ * @param   fFlags          Flags, see RTR3INIT_XXX.
+ * @param   cArgs           Pointer to the argument count.
+ * @param   ppapszArgs      Pointer to the argument vector pointer. NULL
+ *                          allowed if @a cArgs is 0.
+ * @param   pszProgramPath  The program path.  Pass NULL if we're to figure it
+ *                          out ourselves.
+ */
+static int rtR3Init(uint32_t fFlags, int cArgs, char ***ppapszArgs, const char *pszProgramPath)
+{
+    /* no entry log flow, because prefixes and thread may freak out. */
+    Assert(!(fFlags & ~RTR3INIT_FLAGS_VALID_MASK));
+    Assert(!(fFlags & RTR3INIT_FLAGS_DLL) || cArgs == 0);
+
+    /*
+     * Do reference counting, only initialize the first time around.
+     *
+     * We are ASSUMING that nobody will be able to race RTR3Init* calls when the
+     * first one, the real init, is running (second assertion).
+     */
+    int32_t cUsers = ASMAtomicIncS32(&g_crtR3Users);
+    if (cUsers != 1)
+    {
+        AssertMsg(cUsers > 1, ("%d\n", cUsers));
+        Assert(!g_frtR3Initializing);
+
+#if !defined(IN_GUEST) && !defined(RT_NO_GIP)
+        /* Initialize the support library if requested. We've always ignored the
+           status code here for some reason, making the two flags same. */
+        if (fFlags & (RTR3INIT_FLAGS_SUPLIB | RTR3INIT_FLAGS_TRY_SUPLIB))
+        {
+            if (!(fFlags & ((SUPR3INIT_F_UNRESTRICTED | SUPR3INIT_F_LIMITED) << RTR3INIT_FLAGS_SUPLIB_SHIFT)))
+                fFlags |= SUPR3INIT_F_UNRESTRICTED << RTR3INIT_FLAGS_SUPLIB_SHIFT;
+            SUPR3InitEx(fFlags >> RTR3INIT_FLAGS_SUPLIB_SHIFT, NULL /*ppSession*/);
+            g_fInitFlags |= fFlags & (RTR3INIT_FLAGS_SUPLIB | RTR3INIT_FLAGS_TRY_SUPLIB | RTR3INIT_FLAGS_SUPLIB_MASK);
+        }
+#endif
+        g_fInitFlags |= fFlags & RTR3INIT_FLAGS_UTF8_ARGV;
+
+        if (   !(fFlags      & RTR3INIT_FLAGS_UNOBTRUSIVE)
+            && (g_fInitFlags & RTR3INIT_FLAGS_UNOBTRUSIVE))
+        {
+            g_fInitFlags &= ~RTR3INIT_FLAGS_UNOBTRUSIVE;
+            g_fInitFlags |= fFlags & RTR3INIT_FLAGS_STANDALONE_APP;
+            rtR3InitNativeObtrusive(g_fInitFlags | fFlags);
+            rtThreadReInitObtrusive();
+        }
+        else
+            Assert(!(fFlags & RTR3INIT_FLAGS_STANDALONE_APP) || (g_fInitFlags & RTR3INIT_FLAGS_STANDALONE_APP));
+
+        int rc = VINF_SUCCESS;
+        if (pszProgramPath)
+            rc = rtR3InitProgramPath(pszProgramPath);
+        if (RT_SUCCESS(rc))
+            rc = rtR3InitArgv(fFlags, cArgs, ppapszArgs);
+        return rc;
+    }
+
+    /*
+     * Do the initialization.
+     */
+    ASMAtomicWriteBool(&g_frtR3Initializing, true);
+    int rc = rtR3InitBody(fFlags, cArgs, ppapszArgs, pszProgramPath);
+    ASMAtomicWriteBool(&g_frtR3Initializing, false);
+    if (RT_FAILURE(rc))
+    {
+        /* failure */
+        ASMAtomicDecS32(&g_crtR3Users);
+        return rc;
+    }
+
+    /* success */
+    LogFlow(("rtR3Init: returns VINF_SUCCESS\n"));
+    return VINF_SUCCESS;
+}
+
+
+RTR3DECL(int) RTR3InitExe(int cArgs, char ***ppapszArgs, uint32_t fFlags)
+{
+    Assert(!(fFlags & RTR3INIT_FLAGS_DLL));
+    return rtR3Init(fFlags, cArgs, ppapszArgs, NULL);
+}
+
+
+RTR3DECL(int) RTR3InitExeNoArguments(uint32_t fFlags)
+{
+    Assert(!(fFlags & RTR3INIT_FLAGS_DLL));
+    return rtR3Init(fFlags, 0, NULL, NULL);
+}
+
+
+RTR3DECL(int) RTR3InitDll(uint32_t fFlags)
+{
+    Assert(!(fFlags & RTR3INIT_FLAGS_DLL));
+    return rtR3Init(fFlags | RTR3INIT_FLAGS_DLL, 0, NULL, NULL);
+}
+
+
+RTR3DECL(int) RTR3InitEx(uint32_t iVersion, uint32_t fFlags, int cArgs, char ***ppapszArgs, const char *pszProgramPath)
+{
+    AssertReturn(iVersion == RTR3INIT_VER_CUR, VERR_NOT_SUPPORTED);
+    return rtR3Init(fFlags, cArgs, ppapszArgs, pszProgramPath);
+}
+
+
+RTR3DECL(bool) RTR3InitIsInitialized(void)
+{
+    return g_crtR3Users >= 1 && !g_frtR3Initializing;
+}
+
+
+RTR3DECL(bool) RTR3InitIsUnobtrusive(void)
+{
+    return RT_BOOL(g_fInitFlags & RTR3INIT_FLAGS_UNOBTRUSIVE);
+}
+
+
+#if 0 /** @todo implement RTR3Term. */
+RTR3DECL(void) RTR3Term(void)
+{
+}
+#endif
+