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/** @file
* VirtualBox Guest Additions Driver for Solaris - Solaris helper functions.
*/
/*
* 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "solaris.h"
#include <iprt/alloc.h>
/*********************************************************************************************************************************
* Helper functions *
*********************************************************************************************************************************/
void miocack(queue_t *pWriteQueue, mblk_t *pMBlk, int cbData, int rc)
{
struct iocblk *pIOCBlk = (struct iocblk *)pMBlk->b_rptr;
pMBlk->b_datap->db_type = M_IOCACK;
pIOCBlk->ioc_count = cbData;
pIOCBlk->ioc_rval = rc;
pIOCBlk->ioc_error = 0;
qreply(pWriteQueue, pMBlk);
}
void miocnak(queue_t *pWriteQueue, mblk_t *pMBlk, int cbData, int iErr)
{
struct iocblk *pIOCBlk = (struct iocblk *)pMBlk->b_rptr;
pMBlk->b_datap->db_type = M_IOCNAK;
pIOCBlk->ioc_count = cbData;
pIOCBlk->ioc_error = iErr ? iErr : EINVAL;
pIOCBlk->ioc_rval = 0;
qreply(pWriteQueue, pMBlk);
}
/* This does not work like the real version, but does some sanity testing
* and sets a flag. */
int miocpullup(mblk_t *pMBlk, size_t cbMsg)
{
struct iocblk *pIOCBlk = (struct iocblk *)pMBlk->b_rptr;
if (pIOCBlk->ioc_count == TRANSPARENT)
return EINVAL;
if ( !pMBlk->b_cont
|| pMBlk->b_cont->b_wptr < pMBlk->b_cont->b_rptr + cbMsg)
return EINVAL;
pMBlk->b_flag |= F_TEST_PULLUP;
return 0;
}
void mcopyin(mblk_t *pMBlk, void *pvState, size_t cbData, void *pvUser)
{
struct iocblk *pIOCBlk = (struct iocblk *)pMBlk->b_rptr;
struct copyreq *pCopyReq = (struct copyreq *)pMBlk->b_rptr;
AssertReturnVoid( pvUser
|| ( pMBlk->b_datap->db_type == M_IOCTL
&& pIOCBlk->ioc_count == TRANSPARENT
&& pMBlk->b_cont->b_rptr));
pMBlk->b_datap->db_type = M_COPYIN;
pMBlk->b_wptr = pMBlk->b_rptr + sizeof(*pCopyReq);
pCopyReq->cq_private = pvState;
pCopyReq->cq_size = cbData;
pCopyReq->cq_addr = pvUser ? pvUser : *(void **)pMBlk->b_cont->b_rptr;
if (pMBlk->b_cont)
{
freemsg(pMBlk->b_cont);
pMBlk->b_cont = NULL;
}
}
void mcopyout(mblk_t *pMBlk, void *pvState, size_t cbData, void *pvUser,
mblk_t *pMBlkData)
{
struct iocblk *pIOCBlk = (struct iocblk *)pMBlk->b_rptr;
struct copyreq *pCopyReq = (struct copyreq *)pMBlk->b_rptr;
AssertReturnVoid( pvUser
|| ( pMBlk->b_datap->db_type == M_IOCTL
&& pIOCBlk->ioc_count == TRANSPARENT
&& pMBlk->b_cont->b_rptr));
pMBlk->b_datap->db_type = M_COPYOUT;
pMBlk->b_wptr = pMBlk->b_rptr + sizeof(*pCopyReq);
pCopyReq->cq_private = pvState;
pCopyReq->cq_size = cbData;
pCopyReq->cq_addr = pvUser ? pvUser : *(void **)pMBlk->b_cont->b_rptr;
if (pMBlkData)
{
if (pMBlk->b_cont)
freemsg(pMBlk->b_cont);
pMBlk->b_cont = pMBlkData;
pMBlkData->b_wptr = pMBlkData->b_rptr + cbData;
}
}
/* This does not work like the real version but is easy to test the result of.
*/
void qreply(queue_t *pQueue, mblk_t *pMBlk)
{
OTHERQ(pQueue)->q_first = pMBlk;
}
/** @todo reference counting */
mblk_t *allocb(size_t cb, uint_t cPrio)
{
unsigned char *pch = RTMemAllocZ(cb);
struct msgb *pMBlk = (struct msgb *)RTMemAllocZ(sizeof(struct msgb));
struct datab *pDBlk = (struct datab *)RTMemAllocZ(sizeof(struct datab));
if (!pch || !pMBlk || !pDBlk)
{
RTMemFree(pch);
RTMemFree(pMBlk);
RTMemFree(pDBlk);
return NULL;
}
NOREF(cPrio);
pMBlk->b_rptr = pch;
pMBlk->b_wptr = pMBlk->b_rptr + cb;
pMBlk->b_datap = pDBlk;
pDBlk->db_base = pMBlk->b_rptr;
pDBlk->db_lim = pMBlk->b_wptr;
pDBlk->db_type = M_DATA;
return pMBlk;
}
/** @todo reference counting */
void freemsg(mblk_t *pMBlk)
{
if (!pMBlk)
return;
RTMemFree(pMBlk->b_rptr);
RTMemFree(pMBlk->b_datap);
freemsg(pMBlk->b_cont);
RTMemFree(pMBlk);
}
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