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Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Additions/common/VBoxService/VBoxService.cpp | 1311 |
1 files changed, 1311 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxService/VBoxService.cpp b/src/VBox/Additions/common/VBoxService/VBoxService.cpp new file mode 100644 index 00000000..14e51ad5 --- /dev/null +++ b/src/VBox/Additions/common/VBoxService/VBoxService.cpp @@ -0,0 +1,1311 @@ +/* $Id: VBoxService.cpp $ */ +/** @file + * VBoxService - Guest Additions Service Skeleton. + */ + +/* + * Copyright (C) 2007-2022 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>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/** @page pg_vgsvc VBoxService + * + * VBoxService is a root daemon for implementing guest additions features. + * + * It is structured as one binary that contains many sub-services. The reason + * for this is partially historical and partially practical. The practical + * reason is that the VBoxService binary is typically statically linked, at + * least with IPRT and the guest library, so we save quite a lot of space having + * on single binary instead individual binaries for each sub-service and their + * helpers (currently up to 9 subservices and 8 helpers). The historical is + * simply that it started its life on OS/2 dreaming of conquring Windows next, + * so it kind of felt natural to have it all in one binary. + * + * Even if it's structured as a single binary, it is possible, by using command + * line options, to start each subservice as an individual process. + * + * Subservices: + * - @subpage pg_vgsvc_timesync "Time Synchronization" + * - @subpage pg_vgsvc_vminfo "VM Information" + * - @subpage pg_vgsvc_vmstats "VM Statistics" + * - @subpage pg_vgsvc_gstctrl "Guest Control" + * - @subpage pg_vgsvc_pagesharing "Page Sharing" + * - @subpage pg_vgsvc_memballoon "Memory Balooning" + * - @subpage pg_vgsvc_cpuhotplug "CPU Hot-Plugging" + * - @subpage pg_vgsvc_automount "Shared Folder Automounting" + * - @subpage pg_vgsvc_clipboard "Clipboard (OS/2 only)" + * + * Now, since the service predates a lot of stuff, including RTGetOpt, we're + * currently doing our own version of argument parsing here, which is kind of + * stupid. That will hopefully be cleaned up eventually. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +/** @todo LOG_GROUP*/ +#ifndef _MSC_VER +# include <unistd.h> +#endif +#ifndef RT_OS_WINDOWS +# include <errno.h> +# include <signal.h> +# ifdef RT_OS_OS2 +# define pthread_sigmask sigprocmask +# endif +#endif +#ifdef RT_OS_FREEBSD +# include <pthread.h> +#endif + +#include <package-generated.h> +#include "product-generated.h" + +#include <iprt/asm.h> +#include <iprt/buildconfig.h> +#include <iprt/initterm.h> +#include <iprt/file.h> +#ifdef DEBUG +# include <iprt/memtracker.h> +#endif +#include <iprt/env.h> +#include <iprt/message.h> +#include <iprt/path.h> +#include <iprt/process.h> +#include <iprt/semaphore.h> +#include <iprt/string.h> +#include <iprt/stream.h> +#include <iprt/system.h> +#include <iprt/thread.h> + +#include <VBox/err.h> +#include <VBox/log.h> + +#include "VBoxServiceInternal.h" +#include "VBoxServiceUtils.h" +#ifdef VBOX_WITH_VBOXSERVICE_CONTROL +# include "VBoxServiceControl.h" +#endif +#ifdef VBOX_WITH_VBOXSERVICE_TOOLBOX +# include "VBoxServiceToolBox.h" +#endif + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** The program name (derived from argv[0]). */ +char *g_pszProgName = (char *)""; +/** The current verbosity level. */ +unsigned g_cVerbosity = 0; +char g_szLogFile[RTPATH_MAX + 128] = ""; +char g_szPidFile[RTPATH_MAX] = ""; +/** Logging parameters. */ +/** @todo Make this configurable later. */ +static PRTLOGGER g_pLoggerRelease = NULL; +static uint32_t g_cHistory = 10; /* Enable log rotation, 10 files. */ +static uint32_t g_uHistoryFileTime = RT_SEC_1DAY; /* Max 1 day per file. */ +static uint64_t g_uHistoryFileSize = 100 * _1M; /* Max 100MB per file. */ +/** Critical section for (debug) logging. */ +#ifdef DEBUG + RTCRITSECT g_csLog; +#endif +/** The default service interval (the -i | --interval) option). */ +uint32_t g_DefaultInterval = 0; +#ifdef RT_OS_WINDOWS +/** Signal shutdown to the Windows service thread. */ +static bool volatile g_fWindowsServiceShutdown; +/** Event the Windows service thread waits for shutdown. */ +static RTSEMEVENT g_hEvtWindowsService; +#endif + +/** + * The details of the services that has been compiled in. + */ +static struct +{ + /** Pointer to the service descriptor. */ + PCVBOXSERVICE pDesc; + /** The worker thread. NIL_RTTHREAD if it's the main thread. */ + RTTHREAD Thread; + /** Whether Pre-init was called. */ + bool fPreInited; + /** Shutdown indicator. */ + bool volatile fShutdown; + /** Indicator set by the service thread exiting. */ + bool volatile fStopped; + /** Whether the service was started or not. */ + bool fStarted; + /** Whether the service is enabled or not. */ + bool fEnabled; +} g_aServices[] = +{ +#ifdef VBOX_WITH_VBOXSERVICE_CONTROL + { &g_Control, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#ifdef VBOX_WITH_VBOXSERVICE_TIMESYNC + { &g_TimeSync, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#ifdef VBOX_WITH_VBOXSERVICE_CLIPBOARD + { &g_Clipboard, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#ifdef VBOX_WITH_VBOXSERVICE_VMINFO + { &g_VMInfo, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#ifdef VBOX_WITH_VBOXSERVICE_CPUHOTPLUG + { &g_CpuHotPlug, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#ifdef VBOX_WITH_VBOXSERVICE_MANAGEMENT +# ifdef VBOX_WITH_MEMBALLOON + { &g_MemBalloon, NIL_RTTHREAD, false, false, false, false, true }, +# endif + { &g_VMStatistics, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#if defined(VBOX_WITH_VBOXSERVICE_PAGE_SHARING) + { &g_PageSharing, NIL_RTTHREAD, false, false, false, false, true }, +#endif +#ifdef VBOX_WITH_SHARED_FOLDERS + { &g_AutoMount, NIL_RTTHREAD, false, false, false, false, true }, +#endif +}; + + +/* + * Default call-backs for services which do not need special behaviour. + */ + +/** + * @interface_method_impl{VBOXSERVICE,pfnPreInit, Default Implementation} + */ +DECLCALLBACK(int) VGSvcDefaultPreInit(void) +{ + return VINF_SUCCESS; +} + + +/** + * @interface_method_impl{VBOXSERVICE,pfnOption, Default Implementation} + */ +DECLCALLBACK(int) VGSvcDefaultOption(const char **ppszShort, int argc, + char **argv, int *pi) +{ + NOREF(ppszShort); + NOREF(argc); + NOREF(argv); + NOREF(pi); + + return -1; +} + + +/** + * @interface_method_impl{VBOXSERVICE,pfnInit, Default Implementation} + */ +DECLCALLBACK(int) VGSvcDefaultInit(void) +{ + return VINF_SUCCESS; +} + + +/** + * @interface_method_impl{VBOXSERVICE,pfnTerm, Default Implementation} + */ +DECLCALLBACK(void) VGSvcDefaultTerm(void) +{ + return; +} + + +/** + * @callback_method_impl{FNRTLOGPHASE, Release logger callback} + */ +static DECLCALLBACK(void) vgsvcLogHeaderFooter(PRTLOGGER pLoggerRelease, RTLOGPHASE enmPhase, PFNRTLOGPHASEMSG pfnLog) +{ + /* Some introductory information. */ + static RTTIMESPEC s_TimeSpec; + char szTmp[256]; + if (enmPhase == RTLOGPHASE_BEGIN) + RTTimeNow(&s_TimeSpec); + RTTimeSpecToString(&s_TimeSpec, szTmp, sizeof(szTmp)); + + switch (enmPhase) + { + case RTLOGPHASE_BEGIN: + { + pfnLog(pLoggerRelease, + "VBoxService %s r%s (verbosity: %u) %s (%s %s) release log\n" + "Log opened %s\n", + RTBldCfgVersion(), RTBldCfgRevisionStr(), g_cVerbosity, VBOX_BUILD_TARGET, + __DATE__, __TIME__, szTmp); + + int vrc = RTSystemQueryOSInfo(RTSYSOSINFO_PRODUCT, szTmp, sizeof(szTmp)); + if (RT_SUCCESS(vrc) || vrc == VERR_BUFFER_OVERFLOW) + pfnLog(pLoggerRelease, "OS Product: %s\n", szTmp); + vrc = RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szTmp, sizeof(szTmp)); + if (RT_SUCCESS(vrc) || vrc == VERR_BUFFER_OVERFLOW) + pfnLog(pLoggerRelease, "OS Release: %s\n", szTmp); + vrc = RTSystemQueryOSInfo(RTSYSOSINFO_VERSION, szTmp, sizeof(szTmp)); + if (RT_SUCCESS(vrc) || vrc == VERR_BUFFER_OVERFLOW) + pfnLog(pLoggerRelease, "OS Version: %s\n", szTmp); + vrc = RTSystemQueryOSInfo(RTSYSOSINFO_SERVICE_PACK, szTmp, sizeof(szTmp)); + if (RT_SUCCESS(vrc) || vrc == VERR_BUFFER_OVERFLOW) + pfnLog(pLoggerRelease, "OS Service Pack: %s\n", szTmp); + + /* the package type is interesting for Linux distributions */ + char szExecName[RTPATH_MAX]; + char *pszExecName = RTProcGetExecutablePath(szExecName, sizeof(szExecName)); + pfnLog(pLoggerRelease, + "Executable: %s\n" + "Process ID: %u\n" + "Package type: %s" +#ifdef VBOX_OSE + " (OSE)" +#endif + "\n", + pszExecName ? pszExecName : "unknown", + RTProcSelf(), + VBOX_PACKAGE_STRING); + break; + } + + case RTLOGPHASE_PREROTATE: + pfnLog(pLoggerRelease, "Log rotated - Log started %s\n", szTmp); + break; + + case RTLOGPHASE_POSTROTATE: + pfnLog(pLoggerRelease, "Log continuation - Log started %s\n", szTmp); + break; + + case RTLOGPHASE_END: + pfnLog(pLoggerRelease, "End of log file - Log started %s\n", szTmp); + break; + + default: + /* nothing */ + break; + } +} + + +/** + * Creates the default release logger outputting to the specified file. + * + * Pass NULL to disabled logging. + * + * @return IPRT status code. + * @param pszLogFile Filename for log output. NULL disables logging + * (r=bird: No, it doesn't!). + */ +int VGSvcLogCreate(const char *pszLogFile) +{ + /* Create release logger (stdout + file). */ + static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES; + RTUINT fFlags = RTLOGFLAGS_PREFIX_THREAD | RTLOGFLAGS_PREFIX_TIME; +#if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2) + fFlags |= RTLOGFLAGS_USECRLF; +#endif + int rc = RTLogCreateEx(&g_pLoggerRelease, "VBOXSERVICE_RELEASE_LOG", fFlags, "all", + RT_ELEMENTS(s_apszGroups), s_apszGroups, UINT32_MAX /*cMaxEntriesPerGroup*/, + 0 /*cBufDescs*/, NULL /*paBufDescs*/, RTLOGDEST_STDOUT | RTLOGDEST_USER, + vgsvcLogHeaderFooter, g_cHistory, g_uHistoryFileSize, g_uHistoryFileTime, + NULL /*pOutputIf*/, NULL /*pvOutputIfUser*/, + NULL /*pErrInfo*/, "%s", pszLogFile ? pszLogFile : ""); + if (RT_SUCCESS(rc)) + { + /* register this logger as the release logger */ + RTLogRelSetDefaultInstance(g_pLoggerRelease); + + /* Explicitly flush the log in case of VBOXSERVICE_RELEASE_LOG=buffered. */ + RTLogFlush(g_pLoggerRelease); + } + + return rc; +} + + +/** + * Logs a verbose message. + * + * @param pszFormat The message text. + * @param va Format arguments. + */ +void VGSvcLogV(const char *pszFormat, va_list va) +{ +#ifdef DEBUG + int rc = RTCritSectEnter(&g_csLog); + if (RT_SUCCESS(rc)) + { +#endif + char *psz = NULL; + RTStrAPrintfV(&psz, pszFormat, va); + + AssertPtr(psz); + LogRel(("%s", psz)); + + RTStrFree(psz); +#ifdef DEBUG + RTCritSectLeave(&g_csLog); + } +#endif +} + + +/** + * Destroys the currently active logging instance. + */ +void VGSvcLogDestroy(void) +{ + RTLogDestroy(RTLogRelSetDefaultInstance(NULL)); +} + + +/** + * Displays the program usage message. + * + * @returns 1. + */ +static int vgsvcUsage(void) +{ + RTPrintf("Usage: %s [-f|--foreground] [-v|--verbose] [-l|--logfile <file>]\n" + " [-p|--pidfile <file>] [-i|--interval <seconds>]\n" + " [--disable-<service>] [--enable-<service>]\n" + " [--only-<service>] [-h|-?|--help]\n", g_pszProgName); +#ifdef RT_OS_WINDOWS + RTPrintf(" [-r|--register] [-u|--unregister]\n"); +#endif + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + if (g_aServices[j].pDesc->pszUsage) + RTPrintf("%s\n", g_aServices[j].pDesc->pszUsage); + RTPrintf("\n" + "Options:\n" + " -i | --interval The default interval.\n" + " -f | --foreground Don't daemonize the program. For debugging.\n" + " -l | --logfile <file> Enables logging to a file.\n" + " -p | --pidfile <file> Write the process ID to a file.\n" + " -v | --verbose Increment the verbosity level. For debugging.\n" + " -V | --version Show version information.\n" + " -h | -? | --help Show this message and exit with status 1.\n" + ); +#ifdef RT_OS_WINDOWS + RTPrintf(" -r | --register Installs the service.\n" + " -u | --unregister Uninstall service.\n"); +#endif + + RTPrintf("\n" + "Service-specific options:\n"); + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + { + RTPrintf(" --enable-%-14s Enables the %s service. (default)\n", g_aServices[j].pDesc->pszName, g_aServices[j].pDesc->pszName); + RTPrintf(" --disable-%-13s Disables the %s service.\n", g_aServices[j].pDesc->pszName, g_aServices[j].pDesc->pszName); + RTPrintf(" --only-%-16s Only enables the %s service.\n", g_aServices[j].pDesc->pszName, g_aServices[j].pDesc->pszName); + if (g_aServices[j].pDesc->pszOptions) + RTPrintf("%s", g_aServices[j].pDesc->pszOptions); + } + RTPrintf("\n" + " Copyright (C) 2009-" VBOX_C_YEAR " " VBOX_VENDOR "\n"); + + return 1; +} + + +/** + * Displays an error message. + * + * @returns RTEXITCODE_FAILURE. + * @param pszFormat The message text. + * @param ... Format arguments. + */ +RTEXITCODE VGSvcError(const char *pszFormat, ...) +{ + va_list args; + va_start(args, pszFormat); + char *psz = NULL; + RTStrAPrintfV(&psz, pszFormat, args); + va_end(args); + + AssertPtr(psz); + LogRel(("Error: %s", psz)); + + RTStrFree(psz); + + return RTEXITCODE_FAILURE; +} + + +/** + * Displays a verbose message based on the currently + * set global verbosity level. + * + * @param iLevel Minimum log level required to display this message. + * @param pszFormat The message text. + * @param ... Format arguments. + */ +void VGSvcVerbose(unsigned iLevel, const char *pszFormat, ...) +{ + if (iLevel <= g_cVerbosity) + { + va_list va; + va_start(va, pszFormat); + VGSvcLogV(pszFormat, va); + va_end(va); + } +} + + +/** + * Reports the current VBoxService status to the host. + * + * This makes sure that the Failed state is sticky. + * + * @return IPRT status code. + * @param enmStatus Status to report to the host. + */ +int VGSvcReportStatus(VBoxGuestFacilityStatus enmStatus) +{ + /* + * VBoxGuestFacilityStatus_Failed is sticky. + */ + static VBoxGuestFacilityStatus s_enmLastStatus = VBoxGuestFacilityStatus_Inactive; + VGSvcVerbose(4, "Setting VBoxService status to %u\n", enmStatus); + if (s_enmLastStatus != VBoxGuestFacilityStatus_Failed) + { + int rc = VbglR3ReportAdditionsStatus(VBoxGuestFacilityType_VBoxService, enmStatus, 0 /* Flags */); + if (RT_FAILURE(rc)) + { + VGSvcError("Could not report VBoxService status (%u), rc=%Rrc\n", enmStatus, rc); + return rc; + } + s_enmLastStatus = enmStatus; + } + return VINF_SUCCESS; +} + + +/** + * Gets a 32-bit value argument. + * @todo Get rid of this and VGSvcArgString() as soon as we have RTOpt handling. + * + * @returns 0 on success, non-zero exit code on error. + * @param argc The argument count. + * @param argv The argument vector + * @param psz Where in *pi to start looking for the value argument. + * @param pi Where to find and perhaps update the argument index. + * @param pu32 Where to store the 32-bit value. + * @param u32Min The minimum value. + * @param u32Max The maximum value. + */ +int VGSvcArgUInt32(int argc, char **argv, const char *psz, int *pi, uint32_t *pu32, uint32_t u32Min, uint32_t u32Max) +{ + if (*psz == ':' || *psz == '=') + psz++; + if (!*psz) + { + if (*pi + 1 >= argc) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Missing value for the '%s' argument\n", argv[*pi]); + psz = argv[++*pi]; + } + + char *pszNext; + int rc = RTStrToUInt32Ex(psz, &pszNext, 0, pu32); + if (RT_FAILURE(rc) || *pszNext) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Failed to convert interval '%s' to a number\n", psz); + if (*pu32 < u32Min || *pu32 > u32Max) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "The timesync interval of %RU32 seconds is out of range [%RU32..%RU32]\n", + *pu32, u32Min, u32Max); + return 0; +} + + +/** @todo Get rid of this and VGSvcArgUInt32() as soon as we have RTOpt handling. */ +static int vgsvcArgString(int argc, char **argv, const char *psz, int *pi, char *pszBuf, size_t cbBuf) +{ + AssertPtrReturn(pszBuf, VERR_INVALID_POINTER); + AssertReturn(cbBuf, VERR_INVALID_PARAMETER); + + if (*psz == ':' || *psz == '=') + psz++; + if (!*psz) + { + if (*pi + 1 >= argc) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Missing string for the '%s' argument\n", argv[*pi]); + psz = argv[++*pi]; + } + + if (!RTStrPrintf(pszBuf, cbBuf, "%s", psz)) + return RTMsgErrorExit(RTEXITCODE_FAILURE, "String for '%s' argument too big\n", argv[*pi]); + return 0; +} + + +/** + * The service thread. + * + * @returns Whatever the worker function returns. + * @param ThreadSelf My thread handle. + * @param pvUser The service index. + */ +static DECLCALLBACK(int) vgsvcThread(RTTHREAD ThreadSelf, void *pvUser) +{ + const unsigned i = (uintptr_t)pvUser; + +#ifndef RT_OS_WINDOWS + /* + * Block all signals for this thread. Only the main thread will handle signals. + */ + sigset_t signalMask; + sigfillset(&signalMask); + pthread_sigmask(SIG_BLOCK, &signalMask, NULL); +#endif + + int rc = g_aServices[i].pDesc->pfnWorker(&g_aServices[i].fShutdown); + ASMAtomicXchgBool(&g_aServices[i].fShutdown, true); + RTThreadUserSignal(ThreadSelf); + return rc; +} + + +/** + * Lazily calls the pfnPreInit method on each service. + * + * @returns VBox status code, error message displayed. + */ +static RTEXITCODE vgsvcLazyPreInit(void) +{ + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + if (!g_aServices[j].fPreInited) + { + int rc = g_aServices[j].pDesc->pfnPreInit(); + if (RT_FAILURE(rc)) + return VGSvcError("Service '%s' failed pre-init: %Rrc\n", g_aServices[j].pDesc->pszName, rc); + g_aServices[j].fPreInited = true; + } + return RTEXITCODE_SUCCESS; +} + + +/** + * Count the number of enabled services. + */ +static unsigned vgsvcCountEnabledServices(void) +{ + unsigned cEnabled = 0; + for (unsigned i = 0; i < RT_ELEMENTS(g_aServices); i++) + cEnabled += g_aServices[i].fEnabled; + return cEnabled; +} + + +#ifdef RT_OS_WINDOWS +/** + * Console control event callback. + * + * @returns TRUE if handled, FALSE if not. + * @param dwCtrlType The control event type. + * + * @remarks This is generally called on a new thread, so we're racing every + * other thread in the process. + */ +static BOOL WINAPI vgsvcWinConsoleControlHandler(DWORD dwCtrlType) RT_NOTHROW_DEF +{ + int rc = VINF_SUCCESS; + bool fEventHandled = FALSE; + switch (dwCtrlType) + { + /* User pressed CTRL+C or CTRL+BREAK or an external event was sent + * via GenerateConsoleCtrlEvent(). */ + case CTRL_BREAK_EVENT: + case CTRL_CLOSE_EVENT: + case CTRL_C_EVENT: + VGSvcVerbose(2, "ControlHandler: Received break/close event\n"); + rc = VGSvcStopServices(); + fEventHandled = TRUE; + break; + default: + break; + /** @todo Add other events here. */ + } + + if (RT_FAILURE(rc)) + VGSvcError("ControlHandler: Event %ld handled with error rc=%Rrc\n", + dwCtrlType, rc); + return fEventHandled; +} +#endif /* RT_OS_WINDOWS */ + + +/** + * Starts the service. + * + * @returns VBox status code, errors are fully bitched. + * + * @remarks Also called from VBoxService-win.cpp, thus not static. + */ +int VGSvcStartServices(void) +{ + int rc; + + VGSvcReportStatus(VBoxGuestFacilityStatus_Init); + + /* + * Initialize the services. + */ + VGSvcVerbose(2, "Initializing services ...\n"); + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + if (g_aServices[j].fEnabled) + { + rc = g_aServices[j].pDesc->pfnInit(); + if (RT_FAILURE(rc)) + { + if (rc != VERR_SERVICE_DISABLED) + { + VGSvcError("Service '%s' failed to initialize: %Rrc\n", g_aServices[j].pDesc->pszName, rc); + VGSvcReportStatus(VBoxGuestFacilityStatus_Failed); + return rc; + } + + g_aServices[j].fEnabled = false; + VGSvcVerbose(0, "Service '%s' was disabled because of missing functionality\n", g_aServices[j].pDesc->pszName); + } + } + + /* + * Start the service(s). + */ + VGSvcVerbose(2, "Starting services ...\n"); + rc = VINF_SUCCESS; + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + { + if (!g_aServices[j].fEnabled) + continue; + + VGSvcVerbose(2, "Starting service '%s' ...\n", g_aServices[j].pDesc->pszName); + rc = RTThreadCreate(&g_aServices[j].Thread, vgsvcThread, (void *)(uintptr_t)j, 0, + RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, g_aServices[j].pDesc->pszName); + if (RT_FAILURE(rc)) + { + VGSvcError("RTThreadCreate failed, rc=%Rrc\n", rc); + break; + } + g_aServices[j].fStarted = true; + + /* Wait for the thread to initialize. */ + /** @todo There is a race between waiting and checking + * the fShutdown flag of a thread here and processing + * the thread's actual worker loop. If the thread decides + * to exit the loop before we skipped the fShutdown check + * below the service will fail to start! */ + /** @todo This presumably means either a one-shot service or that + * something has gone wrong. In the second case treating it as failure + * to start is probably right, so we need a way to signal the first + * rather than leaving the idle thread hanging around. A flag in the + * service description? */ + RTThreadUserWait(g_aServices[j].Thread, 60 * 1000); + if (g_aServices[j].fShutdown) + { + VGSvcError("Service '%s' failed to start!\n", g_aServices[j].pDesc->pszName); + rc = VERR_GENERAL_FAILURE; + } + } + + if (RT_SUCCESS(rc)) + VGSvcVerbose(1, "All services started.\n"); + else + { + VGSvcError("An error occcurred while the services!\n"); + VGSvcReportStatus(VBoxGuestFacilityStatus_Failed); + } + return rc; +} + + +/** + * Stops and terminates the services. + * + * This should be called even when VBoxServiceStartServices fails so it can + * clean up anything that we succeeded in starting. + * + * @remarks Also called from VBoxService-win.cpp, thus not static. + */ +int VGSvcStopServices(void) +{ + VGSvcReportStatus(VBoxGuestFacilityStatus_Terminating); + + /* + * Signal all the services. + */ + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + ASMAtomicWriteBool(&g_aServices[j].fShutdown, true); + + /* + * Do the pfnStop callback on all running services. + */ + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + if (g_aServices[j].fStarted) + { + VGSvcVerbose(3, "Calling stop function for service '%s' ...\n", g_aServices[j].pDesc->pszName); + g_aServices[j].pDesc->pfnStop(); + } + + VGSvcVerbose(3, "All stop functions for services called\n"); + + /* + * Wait for all the service threads to complete. + */ + int rc = VINF_SUCCESS; + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + { + if (!g_aServices[j].fEnabled) /* Only stop services which were started before. */ + continue; + if (g_aServices[j].Thread != NIL_RTTHREAD) + { + VGSvcVerbose(2, "Waiting for service '%s' to stop ...\n", g_aServices[j].pDesc->pszName); + int rc2 = VINF_SUCCESS; + for (int i = 0; i < 30; i++) /* Wait 30 seconds in total */ + { + rc2 = RTThreadWait(g_aServices[j].Thread, 1000 /* Wait 1 second */, NULL); + if (RT_SUCCESS(rc2)) + break; +#ifdef RT_OS_WINDOWS + /* Notify SCM that it takes a bit longer ... */ + VGSvcWinSetStopPendingStatus(i + j*32); +#endif + } + if (RT_FAILURE(rc2)) + { + VGSvcError("Service '%s' failed to stop. (%Rrc)\n", g_aServices[j].pDesc->pszName, rc2); + rc = rc2; + } + } + VGSvcVerbose(3, "Terminating service '%s' (%d) ...\n", g_aServices[j].pDesc->pszName, j); + g_aServices[j].pDesc->pfnTerm(); + } + +#ifdef RT_OS_WINDOWS + /* + * Wake up and tell the main() thread that we're shutting down (it's + * sleeping in VBoxServiceMainWait). + */ + ASMAtomicWriteBool(&g_fWindowsServiceShutdown, true); + if (g_hEvtWindowsService != NIL_RTSEMEVENT) + { + VGSvcVerbose(3, "Stopping the main thread...\n"); + int rc2 = RTSemEventSignal(g_hEvtWindowsService); + AssertRC(rc2); + } +#endif + + VGSvcVerbose(2, "Stopping services returning: %Rrc\n", rc); + VGSvcReportStatus(RT_SUCCESS(rc) ? VBoxGuestFacilityStatus_Paused : VBoxGuestFacilityStatus_Failed); + return rc; +} + + +/** + * Block the main thread until the service shuts down. + * + * @remarks Also called from VBoxService-win.cpp, thus not static. + */ +void VGSvcMainWait(void) +{ + int rc; + + VGSvcReportStatus(VBoxGuestFacilityStatus_Active); + +#ifdef RT_OS_WINDOWS + /* + * Wait for the semaphore to be signalled. + */ + VGSvcVerbose(1, "Waiting in main thread\n"); + rc = RTSemEventCreate(&g_hEvtWindowsService); + AssertRC(rc); + while (!ASMAtomicReadBool(&g_fWindowsServiceShutdown)) + { + rc = RTSemEventWait(g_hEvtWindowsService, RT_INDEFINITE_WAIT); + AssertRC(rc); + } + RTSemEventDestroy(g_hEvtWindowsService); + g_hEvtWindowsService = NIL_RTSEMEVENT; +#else + /* + * Wait explicitly for a HUP, INT, QUIT, ABRT or TERM signal, blocking + * all important signals. + * + * The annoying EINTR/ERESTART loop is for the benefit of Solaris where + * sigwait returns when we receive a SIGCHLD. Kind of makes sense since + * the signal has to be delivered... Anyway, darwin (10.9.5) has a much + * worse way of dealing with SIGCHLD, apparently it'll just return any + * of the signals we're waiting on when SIGCHLD becomes pending on this + * thread. So, we wait for SIGCHLD here and ignores it. + */ + sigset_t signalMask; + sigemptyset(&signalMask); + sigaddset(&signalMask, SIGHUP); + sigaddset(&signalMask, SIGINT); + sigaddset(&signalMask, SIGQUIT); + sigaddset(&signalMask, SIGABRT); + sigaddset(&signalMask, SIGTERM); + sigaddset(&signalMask, SIGCHLD); + pthread_sigmask(SIG_BLOCK, &signalMask, NULL); + + int iSignal; + do + { + iSignal = -1; + rc = sigwait(&signalMask, &iSignal); + } + while ( rc == EINTR +# ifdef ERESTART + || rc == ERESTART +# endif + || iSignal == SIGCHLD + ); + + VGSvcVerbose(3, "VGSvcMainWait: Received signal %d (rc=%d)\n", iSignal, rc); +#endif /* !RT_OS_WINDOWS */ +} + + +/** + * Report VbglR3InitUser / VbglR3Init failure. + * + * @returns RTEXITCODE_FAILURE + * @param rcVbgl The failing status code. + */ +static RTEXITCODE vbglInitFailure(int rcVbgl) +{ + if (rcVbgl == VERR_ACCESS_DENIED) + return RTMsgErrorExit(RTEXITCODE_FAILURE, + "Insufficient privileges to start %s! Please start with Administrator/root privileges!\n", + g_pszProgName); + return RTMsgErrorExit(RTEXITCODE_FAILURE, "VbglR3Init failed with rc=%Rrc\n", rcVbgl); +} + + +int main(int argc, char **argv) +{ + RTEXITCODE rcExit; + + /* + * Init globals and such. + * + * Note! The --utf8-argv stuff is an internal hack to avoid locale configuration + * issues preventing us from passing non-ASCII string to child processes. + */ + uint32_t fIprtFlags = 0; +#ifdef VBOXSERVICE_ARG1_UTF8_ARGV + if (argc > 1 && strcmp(argv[1], VBOXSERVICE_ARG1_UTF8_ARGV) == 0) + { + argv[1] = argv[0]; + argv++; + argc--; + fIprtFlags |= RTR3INIT_FLAGS_UTF8_ARGV; + } +#endif + int rc = RTR3InitExe(argc, &argv, fIprtFlags); + if (RT_FAILURE(rc)) + return RTMsgInitFailure(rc); + + g_pszProgName = RTPathFilename(argv[0]); +#ifdef RT_OS_WINDOWS + VGSvcWinResolveApis(); +#endif +#ifdef DEBUG + rc = RTCritSectInit(&g_csLog); + AssertRC(rc); +#endif + +#ifdef VBOX_WITH_VBOXSERVICE_TOOLBOX + /* + * Run toolbox code before all other stuff since these things are simpler + * shell/file/text utility like programs that just happens to be inside + * VBoxService and shouldn't be subject to /dev/vboxguest, pid-files and + * global mutex restrictions. + */ + if (VGSvcToolboxMain(argc, argv, &rcExit)) + return rcExit; +#endif + + bool fUserSession = false; +#ifdef VBOX_WITH_VBOXSERVICE_CONTROL + /* + * Check if we're the specially spawned VBoxService.exe process that + * handles a guest control session. + */ + if ( argc >= 2 + && !RTStrICmp(argv[1], VBOXSERVICECTRLSESSION_GETOPT_PREFIX)) + fUserSession = true; +#endif + + /* + * Connect to the kernel part before daemonizing and *before* we do the sub-service + * pre-init just in case one of services needs do to some initial stuff with it. + * + * However, we do not fail till after we've parsed arguments, because that will + * prevent useful stuff like --help, --register, --unregister and --version from + * working when the driver hasn't been installed/loaded yet. + */ + int const rcVbgl = fUserSession ? VbglR3InitUser() : VbglR3Init(); + +#ifdef RT_OS_WINDOWS + /* + * Check if we're the specially spawned VBoxService.exe process that + * handles page fusion. This saves an extra statically linked executable. + */ + if ( argc == 2 + && !RTStrICmp(argv[1], "pagefusion")) + { + if (RT_SUCCESS(rcVbgl)) + return VGSvcPageSharingWorkerChild(); + return vbglInitFailure(rcVbgl); + } +#endif + +#ifdef VBOX_WITH_VBOXSERVICE_CONTROL + /* + * Check if we're the specially spawned VBoxService.exe process that + * handles a guest control session. + */ + if (fUserSession) + { + if (RT_SUCCESS(rcVbgl)) + return VGSvcGstCtrlSessionSpawnInit(argc, argv); + return vbglInitFailure(rcVbgl); + } +#endif + + /* + * Parse the arguments. + * + * Note! This code predates RTGetOpt, thus the manual parsing. + */ + bool fDaemonize = true; + bool fDaemonized = false; + for (int i = 1; i < argc; i++) + { + const char *psz = argv[i]; + if (*psz != '-') + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unknown argument '%s'\n", psz); + psz++; + + /* translate long argument to short */ + if (*psz == '-') + { + psz++; + size_t cch = strlen(psz); +#define MATCHES(strconst) ( cch == sizeof(strconst) - 1 \ + && !memcmp(psz, strconst, sizeof(strconst) - 1) ) + if (MATCHES("foreground")) + psz = "f"; + else if (MATCHES("verbose")) + psz = "v"; + else if (MATCHES("version")) + psz = "V"; + else if (MATCHES("help")) + psz = "h"; + else if (MATCHES("interval")) + psz = "i"; +#ifdef RT_OS_WINDOWS + else if (MATCHES("register")) + psz = "r"; + else if (MATCHES("unregister")) + psz = "u"; +#endif + else if (MATCHES("logfile")) + psz = "l"; + else if (MATCHES("pidfile")) + psz = "p"; + else if (MATCHES("daemonized")) + { + fDaemonized = true; + continue; + } + else + { + bool fFound = false; + + if (cch > sizeof("enable-") && !memcmp(psz, RT_STR_TUPLE("enable-"))) + for (unsigned j = 0; !fFound && j < RT_ELEMENTS(g_aServices); j++) + if ((fFound = !RTStrICmp(psz + sizeof("enable-") - 1, g_aServices[j].pDesc->pszName))) + g_aServices[j].fEnabled = true; + + if (cch > sizeof("disable-") && !memcmp(psz, RT_STR_TUPLE("disable-"))) + for (unsigned j = 0; !fFound && j < RT_ELEMENTS(g_aServices); j++) + if ((fFound = !RTStrICmp(psz + sizeof("disable-") - 1, g_aServices[j].pDesc->pszName))) + g_aServices[j].fEnabled = false; + + if (cch > sizeof("only-") && !memcmp(psz, RT_STR_TUPLE("only-"))) + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + { + g_aServices[j].fEnabled = !RTStrICmp(psz + sizeof("only-") - 1, g_aServices[j].pDesc->pszName); + if (g_aServices[j].fEnabled) + fFound = true; + } + + if (!fFound) + { + rcExit = vgsvcLazyPreInit(); + if (rcExit != RTEXITCODE_SUCCESS) + return rcExit; + for (unsigned j = 0; !fFound && j < RT_ELEMENTS(g_aServices); j++) + { + rc = g_aServices[j].pDesc->pfnOption(NULL, argc, argv, &i); + fFound = rc == VINF_SUCCESS; + if (fFound) + break; + if (rc != -1) + return rc; + } + } + if (!fFound) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unknown option '%s'\n", argv[i]); + continue; + } +#undef MATCHES + } + + /* handle the string of short options. */ + do + { + switch (*psz) + { + case 'i': + rc = VGSvcArgUInt32(argc, argv, psz + 1, &i, &g_DefaultInterval, 1, (UINT32_MAX / 1000) - 1); + if (rc) + return rc; + psz = NULL; + break; + + case 'f': + fDaemonize = false; + break; + + case 'v': + g_cVerbosity++; + break; + + case 'V': + RTPrintf("%sr%s\n", RTBldCfgVersion(), RTBldCfgRevisionStr()); + return RTEXITCODE_SUCCESS; + + case 'h': + case '?': + return vgsvcUsage(); + +#ifdef RT_OS_WINDOWS + case 'r': + return VGSvcWinInstall(); + + case 'u': + return VGSvcWinUninstall(); +#endif + + case 'l': + { + rc = vgsvcArgString(argc, argv, psz + 1, &i, g_szLogFile, sizeof(g_szLogFile)); + if (rc) + return rc; + psz = NULL; + break; + } + + case 'p': + { + rc = vgsvcArgString(argc, argv, psz + 1, &i, g_szPidFile, sizeof(g_szPidFile)); + if (rc) + return rc; + psz = NULL; + break; + } + + default: + { + rcExit = vgsvcLazyPreInit(); + if (rcExit != RTEXITCODE_SUCCESS) + return rcExit; + + bool fFound = false; + for (unsigned j = 0; j < RT_ELEMENTS(g_aServices); j++) + { + rc = g_aServices[j].pDesc->pfnOption(&psz, argc, argv, &i); + fFound = rc == VINF_SUCCESS; + if (fFound) + break; + if (rc != -1) + return rc; + } + if (!fFound) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unknown option '%c' (%s)\n", *psz, argv[i]); + break; + } + } + } while (psz && *++psz); + } + + /* Now we can report the VBGL failure. */ + if (RT_FAILURE(rcVbgl)) + return vbglInitFailure(rcVbgl); + + /* Check that at least one service is enabled. */ + if (vgsvcCountEnabledServices() == 0) + return RTMsgErrorExit(RTEXITCODE_SYNTAX, "At least one service must be enabled\n"); + + rc = VGSvcLogCreate(g_szLogFile[0] ? g_szLogFile : NULL); + if (RT_FAILURE(rc)) + return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to create release log '%s', rc=%Rrc\n", + g_szLogFile[0] ? g_szLogFile : "<None>", rc); + + /* Call pre-init if we didn't do it already. */ + rcExit = vgsvcLazyPreInit(); + if (rcExit != RTEXITCODE_SUCCESS) + return rcExit; + +#ifdef VBOX_WITH_VBOXSERVICE_DRMRESIZE +# ifdef RT_OS_LINUX + rc = VbglR3DrmClientStart(); + if (RT_FAILURE(rc)) + VGSvcVerbose(0, "VMSVGA DRM resizing client not started, rc=%Rrc\n", rc); +# endif /* RT_OS_LINUX */ +#endif /* VBOX_WITH_VBOXSERVICE_DRMRESIZE */ + +#ifdef RT_OS_WINDOWS + /* + * Make sure only one instance of VBoxService runs at a time. Create a + * global mutex for that. + * + * Note! The \\Global\ namespace was introduced with Win2K, thus the + * version check. + * Note! If the mutex exists CreateMutex will open it and set last error to + * ERROR_ALREADY_EXISTS. + */ + OSVERSIONINFOEX OSInfoEx; + RT_ZERO(OSInfoEx); + OSInfoEx.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); + + + SetLastError(NO_ERROR); + HANDLE hMutexAppRunning; + if (RTSystemGetNtVersion() >= RTSYSTEM_MAKE_NT_VERSION(5,0,0)) /* Windows 2000 */ + hMutexAppRunning = CreateMutexW(NULL, FALSE, L"Global\\" RT_CONCAT(L,VBOXSERVICE_NAME)); + else + hMutexAppRunning = CreateMutexW(NULL, FALSE, RT_CONCAT(L,VBOXSERVICE_NAME)); + if (hMutexAppRunning == NULL) + { + DWORD dwErr = GetLastError(); + if ( dwErr == ERROR_ALREADY_EXISTS + || dwErr == ERROR_ACCESS_DENIED) + { + VGSvcError("%s is already running! Terminating.\n", g_pszProgName); + return RTEXITCODE_FAILURE; + } + + VGSvcError("CreateMutex failed with last error %u! Terminating.\n", GetLastError()); + return RTEXITCODE_FAILURE; + } + +#else /* !RT_OS_WINDOWS */ + /* On other OSes we have PID file support provided by the actual service definitions / service wrapper scripts, + * like vboxadd-service.sh on Linux or vboxservice.xml on Solaris. */ +#endif /* !RT_OS_WINDOWS */ + + VGSvcVerbose(0, "%s r%s started. Verbose level = %d\n", RTBldCfgVersion(), RTBldCfgRevisionStr(), g_cVerbosity); + + /* + * Daemonize if requested. + */ + if (fDaemonize && !fDaemonized) + { +#ifdef RT_OS_WINDOWS + VGSvcVerbose(2, "Starting service dispatcher ...\n"); + rcExit = VGSvcWinEnterCtrlDispatcher(); +#else + VGSvcVerbose(1, "Daemonizing...\n"); + rc = VbglR3Daemonize(false /* fNoChDir */, false /* fNoClose */, + false /* fRespawn */, NULL /* pcRespawn */); + if (RT_FAILURE(rc)) + return VGSvcError("Daemon failed: %Rrc\n", rc); + /* in-child */ +#endif + } +#ifdef RT_OS_WINDOWS + else +#endif + { + /* + * Windows: We're running the service as a console application now. Start the + * services, enter the main thread's run loop and stop them again + * when it returns. + * + * POSIX: This is used for both daemons and console runs. Start all services + * and return immediately. + */ +#ifdef RT_OS_WINDOWS + /* Install console control handler. */ + if (!SetConsoleCtrlHandler(vgsvcWinConsoleControlHandler, TRUE /* Add handler */)) + { + VGSvcError("Unable to add console control handler, error=%ld\n", GetLastError()); + /* Just skip this error, not critical. */ + } +#endif /* RT_OS_WINDOWS */ + rc = VGSvcStartServices(); + RTFILE hPidFile = NIL_RTFILE; + if (RT_SUCCESS(rc)) + if (g_szPidFile[0]) + rc = VbglR3PidFile(g_szPidFile, &hPidFile); + rcExit = RT_SUCCESS(rc) ? RTEXITCODE_SUCCESS : RTEXITCODE_FAILURE; + if (RT_SUCCESS(rc)) + VGSvcMainWait(); + if (g_szPidFile[0] && hPidFile != NIL_RTFILE) + VbglR3ClosePidFile(g_szPidFile, hPidFile); +#ifdef RT_OS_WINDOWS + /* Uninstall console control handler. */ + if (!SetConsoleCtrlHandler((PHANDLER_ROUTINE)NULL, FALSE /* Remove handler */)) + { + VGSvcError("Unable to remove console control handler, error=%ld\n", GetLastError()); + /* Just skip this error, not critical. */ + } +#else /* !RT_OS_WINDOWS */ + /* On Windows - since we're running as a console application - we already stopped all services + * through the console control handler. So only do the stopping of services here on other platforms + * where the break/shutdown/whatever signal was just received. */ + VGSvcStopServices(); +#endif /* RT_OS_WINDOWS */ + } + VGSvcReportStatus(VBoxGuestFacilityStatus_Terminated); + +#ifdef RT_OS_WINDOWS + /* + * Cleanup mutex. + */ + CloseHandle(hMutexAppRunning); +#endif + + VGSvcVerbose(0, "Ended.\n"); + +#ifdef DEBUG + RTCritSectDelete(&g_csLog); + //RTMemTrackerDumpAllToStdOut(); +#endif + + VGSvcLogDestroy(); + + return rcExit; +} |