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/* $Id: VBoxGuestR3LibHostChannel.cpp $ */
/** @file
* VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Host Channel.
*/
/*
* Copyright (C) 2012-2019 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.
*/
#include <iprt/mem.h>
#include <VBox/HostServices/VBoxHostChannel.h>
#include "VBoxGuestR3LibInternal.h"
VBGLR3DECL(int) VbglR3HostChannelInit(uint32_t *pidClient)
{
return VbglR3HGCMConnect("VBoxHostChannel", pidClient);
}
VBGLR3DECL(void) VbglR3HostChannelTerm(uint32_t idClient)
{
VbglR3HGCMDisconnect(idClient);
}
VBGLR3DECL(int) VbglR3HostChannelAttach(uint32_t *pu32ChannelHandle,
uint32_t u32HGCMClientId,
const char *pszName,
uint32_t u32Flags)
{
/* Make a heap copy of the name, because HGCM can not use some of other memory types. */
size_t cbName = strlen(pszName) + 1;
char *pszCopy = (char *)RTMemAlloc(cbName);
if (pszCopy == NULL)
{
return VERR_NO_MEMORY;
}
memcpy(pszCopy, pszName, cbName);
VBoxHostChannelAttach parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_ATTACH, 3);
VbglHGCMParmPtrSet(&parms.name, pszCopy, (uint32_t)cbName);
VbglHGCMParmUInt32Set(&parms.flags, u32Flags);
VbglHGCMParmUInt32Set(&parms.handle, 0);
int rc = VbglR3HGCMCall(&parms.hdr, sizeof(parms));
if (RT_SUCCESS(rc))
*pu32ChannelHandle = parms.handle.u.value32;
RTMemFree(pszCopy);
return rc;
}
VBGLR3DECL(void) VbglR3HostChannelDetach(uint32_t u32ChannelHandle,
uint32_t u32HGCMClientId)
{
VBoxHostChannelDetach parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_DETACH, 1);
VbglHGCMParmUInt32Set(&parms.handle, u32ChannelHandle);
VbglR3HGCMCall(&parms.hdr, sizeof(parms));
}
VBGLR3DECL(int) VbglR3HostChannelSend(uint32_t u32ChannelHandle,
uint32_t u32HGCMClientId,
void *pvData,
uint32_t cbData)
{
VBoxHostChannelSend parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_SEND, 2);
VbglHGCMParmUInt32Set(&parms.handle, u32ChannelHandle);
VbglHGCMParmPtrSet(&parms.data, pvData, cbData);
return VbglR3HGCMCall(&parms.hdr, sizeof(parms));
}
VBGLR3DECL(int) VbglR3HostChannelRecv(uint32_t u32ChannelHandle,
uint32_t u32HGCMClientId,
void *pvData,
uint32_t cbData,
uint32_t *pu32SizeReceived,
uint32_t *pu32SizeRemaining)
{
VBoxHostChannelRecv parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_RECV, 4);
VbglHGCMParmUInt32Set(&parms.handle, u32ChannelHandle);
VbglHGCMParmPtrSet(&parms.data, pvData, cbData);
VbglHGCMParmUInt32Set(&parms.sizeReceived, 0);
VbglHGCMParmUInt32Set(&parms.sizeRemaining, 0);
int rc = VbglR3HGCMCall(&parms.hdr, sizeof(parms));
if (RT_SUCCESS(rc))
{
*pu32SizeReceived = parms.sizeReceived.u.value32;
*pu32SizeRemaining = parms.sizeRemaining.u.value32;
}
return rc;
}
VBGLR3DECL(int) VbglR3HostChannelControl(uint32_t u32ChannelHandle,
uint32_t u32HGCMClientId,
uint32_t u32Code,
void *pvParm,
uint32_t cbParm,
void *pvData,
uint32_t cbData,
uint32_t *pu32SizeDataReturned)
{
VBoxHostChannelControl parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_CONTROL, 5);
VbglHGCMParmUInt32Set(&parms.handle, u32ChannelHandle);
VbglHGCMParmUInt32Set(&parms.code, u32Code);
VbglHGCMParmPtrSet(&parms.parm, pvParm, cbParm);
VbglHGCMParmPtrSet(&parms.data, pvData, cbData);
VbglHGCMParmUInt32Set(&parms.sizeDataReturned, 0);
int rc = VbglR3HGCMCall(&parms.hdr, sizeof(parms));
if (RT_SUCCESS(rc))
{
*pu32SizeDataReturned = parms.sizeDataReturned.u.value32;
}
return rc;
}
VBGLR3DECL(int) VbglR3HostChannelEventWait(uint32_t *pu32ChannelHandle,
uint32_t u32HGCMClientId,
uint32_t *pu32EventId,
void *pvParm,
uint32_t cbParm,
uint32_t *pu32SizeReturned)
{
VBoxHostChannelEventWait parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_EVENT_WAIT, 4);
VbglHGCMParmUInt32Set(&parms.handle, 0);
VbglHGCMParmUInt32Set(&parms.id, 0);
VbglHGCMParmPtrSet(&parms.parm, pvParm, cbParm);
VbglHGCMParmUInt32Set(&parms.sizeReturned, 0);
int rc = VbglR3HGCMCall(&parms.hdr, sizeof(parms));
if (RT_SUCCESS(rc))
{
*pu32ChannelHandle = parms.handle.u.value32;
*pu32EventId = parms.id.u.value32;
*pu32SizeReturned = parms.sizeReturned.u.value32;
}
return rc;
}
VBGLR3DECL(int) VbglR3HostChannelEventCancel(uint32_t u32ChannelHandle,
uint32_t u32HGCMClientId)
{
RT_NOREF1(u32ChannelHandle);
VBoxHostChannelEventCancel parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_EVENT_CANCEL, 0);
return VbglR3HGCMCall(&parms.hdr, sizeof(parms));
}
VBGLR3DECL(int) VbglR3HostChannelQuery(const char *pszName,
uint32_t u32HGCMClientId,
uint32_t u32Code,
void *pvParm,
uint32_t cbParm,
void *pvData,
uint32_t cbData,
uint32_t *pu32SizeDataReturned)
{
/* Make a heap copy of the name, because HGCM can not use some of other memory types. */
size_t cbName = strlen(pszName) + 1;
char *pszCopy = (char *)RTMemAlloc(cbName);
if (pszCopy == NULL)
{
return VERR_NO_MEMORY;
}
memcpy(pszCopy, pszName, cbName);
VBoxHostChannelQuery parms;
VBGL_HGCM_HDR_INIT(&parms.hdr, u32HGCMClientId, VBOX_HOST_CHANNEL_FN_QUERY, 5);
VbglHGCMParmPtrSet(&parms.name, pszCopy, (uint32_t)cbName);
VbglHGCMParmUInt32Set(&parms.code, u32Code);
VbglHGCMParmPtrSet(&parms.parm, pvParm, cbParm);
VbglHGCMParmPtrSet(&parms.data, pvData, cbData);
VbglHGCMParmUInt32Set(&parms.sizeDataReturned, 0);
int rc = VbglR3HGCMCall(&parms.hdr, sizeof(parms));
if (RT_SUCCESS(rc))
{
*pu32SizeDataReturned = parms.sizeDataReturned.u.value32;
}
RTMemFree(pszCopy);
return rc;
}
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