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/* $Id: UsbTestServiceGadgetHostUsbIp.cpp $ */
/** @file
* UsbTestServ - Remote USB test configuration and execution server, USB gadget host interface
* for USB/IP.
*/
/*
* Copyright (C) 2016-2019 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/asm.h>
#include <iprt/ctype.h>
#include <iprt/err.h>
#include <iprt/env.h>
#include <iprt/mem.h>
#include <iprt/process.h>
#include <iprt/string.h>
#include <iprt/thread.h>
#include <iprt/time.h>
#include "UsbTestServiceGadgetHostInternal.h"
#include "UsbTestServicePlatform.h"
/*********************************************************************************************************************************
* Constants And Macros, Structures and Typedefs *
*********************************************************************************************************************************/
/**
* Internal UTS gadget host instance data.
*/
typedef struct UTSGADGETHOSTTYPEINT
{
/** Handle to the USB/IP daemon process. */
RTPROCESS hProcUsbIp;
} UTSGADGETHOSTTYPEINT;
/** Default port of the USB/IP server. */
#define UTS_GADGET_HOST_USBIP_PORT_DEF 3240
/*********************************************************************************************************************************
* Internal Functions *
*********************************************************************************************************************************/
/**
* Worker for binding/unbinding the given gadget from the USB/IP server.
*
* @returns IPRT status code.
* @param pThis The gadget host instance.
* @param hGadget The gadget handle.
* @param fBind Flag whether to do a bind or unbind.
*/
static int usbGadgetHostUsbIpBindUnbind(PUTSGADGETHOSTTYPEINT pThis, UTSGADGET hGadget, bool fBind)
{
RT_NOREF1(pThis);
uint32_t uBusId, uDevId;
char aszBus[32];
uBusId = utsGadgetGetBusId(hGadget);
uDevId = utsGadgetGetDevId(hGadget);
/* Create the busid argument string. */
size_t cbRet = RTStrPrintf(&aszBus[0], RT_ELEMENTS(aszBus), "%u-%u", uBusId, uDevId);
if (cbRet == RT_ELEMENTS(aszBus))
return VERR_BUFFER_OVERFLOW;
/* Bind to the USB/IP server. */
RTPROCESS hProcUsbIp = NIL_RTPROCESS;
const char *apszArgv[5];
apszArgv[0] = "usbip";
apszArgv[1] = fBind ? "bind" : "unbind";
apszArgv[2] = "-b";
apszArgv[3] = &aszBus[0];
apszArgv[4] = NULL;
int rc = RTProcCreate("usbip", apszArgv, RTENV_DEFAULT, RTPROC_FLAGS_SEARCH_PATH, &hProcUsbIp);
if (RT_SUCCESS(rc))
{
RTPROCSTATUS ProcSts;
rc = RTProcWait(hProcUsbIp, RTPROCWAIT_FLAGS_BLOCK, &ProcSts);
if (RT_SUCCESS(rc))
{
/* Evaluate the process status. */
if ( ProcSts.enmReason != RTPROCEXITREASON_NORMAL
|| ProcSts.iStatus != 0)
rc = VERR_UNRESOLVED_ERROR; /** @todo Log and give finer grained status code. */
}
}
return rc;
}
/**
* @interface_method_impl{UTSGADGETHOSTIF,pfnInit}
*/
static DECLCALLBACK(int) utsGadgetHostUsbIpInit(PUTSGADGETHOSTTYPEINT pIf, PCUTSGADGETCFGITEM paCfg)
{
int rc = VINF_SUCCESS;
uint16_t uPort = 0;
pIf->hProcUsbIp = NIL_RTPROCESS;
rc = utsGadgetCfgQueryU16Def(paCfg, "UsbIp/Port", &uPort, UTS_GADGET_HOST_USBIP_PORT_DEF);
if (RT_SUCCESS(rc))
{
/* Make sure the kernel drivers are loaded. */
rc = utsPlatformModuleLoad("usbip-core", NULL, 0);
if (RT_SUCCESS(rc))
{
rc = utsPlatformModuleLoad("usbip-host", NULL, 0);
if (RT_SUCCESS(rc))
{
char aszPort[10];
char aszPidFile[64];
const char *apszArgv[6];
RTStrPrintf(aszPort, RT_ELEMENTS(aszPort), "%u", uPort);
RTStrPrintf(aszPidFile, RT_ELEMENTS(aszPidFile), "/var/run/usbipd-%u.pid", uPort);
/* Start the USB/IP server process. */
apszArgv[0] = "usbipd";
apszArgv[1] = "--tcp-port";
apszArgv[2] = aszPort;
apszArgv[3] = "--pid";
apszArgv[4] = aszPidFile;
apszArgv[5] = NULL;
rc = RTProcCreate("usbipd", apszArgv, RTENV_DEFAULT, RTPROC_FLAGS_SEARCH_PATH, &pIf->hProcUsbIp);
if (RT_SUCCESS(rc))
{
/* Wait for a bit to make sure the server started up successfully. */
uint64_t tsStart = RTTimeMilliTS();
do
{
RTPROCSTATUS ProcSts;
rc = RTProcWait(pIf->hProcUsbIp, RTPROCWAIT_FLAGS_NOBLOCK, &ProcSts);
if (rc != VERR_PROCESS_RUNNING)
{
rc = VERR_INVALID_HANDLE;
break;
}
RTThreadSleep(1);
rc = VINF_SUCCESS;
} while (RTTimeMilliTS() - tsStart < 2 * 1000); /* 2 seconds. */
}
}
}
}
return rc;
}
/**
* @interface_method_impl{UTSGADGETHOSTIF,pfnTerm}
*/
static DECLCALLBACK(void) utsGadgetHostUsbIpTerm(PUTSGADGETHOSTTYPEINT pIf)
{
/* Kill the process and wait for it to terminate. */
RTProcTerminate(pIf->hProcUsbIp);
RTPROCSTATUS ProcSts;
RTProcWait(pIf->hProcUsbIp, RTPROCWAIT_FLAGS_BLOCK, &ProcSts);
}
/**
* @interface_method_impl{UTSGADGETHOSTIF,pfnGadgetAdd}
*/
static DECLCALLBACK(int) utsGadgetHostUsbIpGadgetAdd(PUTSGADGETHOSTTYPEINT pIf, UTSGADGET hGadget)
{
/* Nothing to do so far. */
RT_NOREF2(pIf, hGadget);
return VINF_SUCCESS;
}
/**
* @interface_method_impl{UTSGADGETHOSTIF,pfnGadgetRemove}
*/
static DECLCALLBACK(int) utsGadgetHostUsbIpGadgetRemove(PUTSGADGETHOSTTYPEINT pIf, UTSGADGET hGadget)
{
/* Nothing to do so far. */
RT_NOREF2(pIf, hGadget);
return VINF_SUCCESS;
}
/**
* @interface_method_impl{UTSGADGETHOSTIF,pfnGadgetConnect}
*/
static DECLCALLBACK(int) utsGadgetHostUsbIpGadgetConnect(PUTSGADGETHOSTTYPEINT pIf, UTSGADGET hGadget)
{
return usbGadgetHostUsbIpBindUnbind(pIf, hGadget, true /* fBind */);
}
/**
* @interface_method_impl{UTSGADGETHOSTIF,pfnGadgetDisconnect}
*/
static DECLCALLBACK(int) utsGadgetHostUsbIpGadgetDisconnect(PUTSGADGETHOSTTYPEINT pIf, UTSGADGET hGadget)
{
return usbGadgetHostUsbIpBindUnbind(pIf, hGadget, false /* fBind */);
}
/**
* The gadget host interface callback table.
*/
const UTSGADGETHOSTIF g_UtsGadgetHostIfUsbIp =
{
/** enmType */
UTSGADGETHOSTTYPE_USBIP,
/** pszDesc */
"UTS USB/IP gadget host",
/** cbIf */
sizeof(UTSGADGETHOSTTYPEINT),
/** pfnInit */
utsGadgetHostUsbIpInit,
/** pfnTerm */
utsGadgetHostUsbIpTerm,
/** pfnGadgetAdd */
utsGadgetHostUsbIpGadgetAdd,
/** pfnGadgetRemove */
utsGadgetHostUsbIpGadgetRemove,
/** pfnGadgetConnect */
utsGadgetHostUsbIpGadgetConnect,
/** pfnGadgetDisconnect */
utsGadgetHostUsbIpGadgetDisconnect
};
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