DECLASM(int) VBoxDrvIOCtlFast(uint16_t sfn, uint8_t iFunction)
{
/*
* Find the session.
*/
const RTPROCESS Process = RTProcSelf();
const unsigned iHash = SESSION_HASH(sfn);
PSUPDRVSESSION pSession;
RTSpinlockAcquire(g_Spinlock);
pSession = g_apSessionHashTab[iHash];
if (pSession && pSession->Process != Process)
{
do pSession = pSession->pNextHash;
while ( pSession
&& ( pSession->sfn != sfn
|| pSession->Process != Process));
if (RT_LIKELY(pSession))
supdrvSessionRetain(pSession);
}
RTSpinlockReleaseNoInts(g_Spinlock);
if (RT_UNLIKELY(!pSession))
{
OSDBGPRINT(("VBoxDrvIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
return VERR_INVALID_PARAMETER;
}
/*
* Dispatch the fast IOCtl.
*/
supdrvIOCtlFast(iFunction, 0, &g_DevExt, pSession);
supdrvSessionRelease(pSession);
return 0;
}
/**
* Close device.
*
* @param pInode Pointer to inode info structure.
* @param pFilp Associated file pointer.
*/
static int VBoxDrvLinuxClose(struct inode *pInode, struct file *pFilp)
{
Log(("VBoxDrvLinuxClose: pFilp=%p pSession=%p pid=%d/%d %s\n",
pFilp, pFilp->private_data, RTProcSelf(), current->pid, current->comm));
supdrvSessionRelease((PSUPDRVSESSION)pFilp->private_data);
pFilp->private_data = NULL;
return 0;
}
DECLASM(int) VBoxDrvClose(uint16_t sfn)
{
Log(("VBoxDrvClose: pid=%d sfn=%d\n", (int)RTProcSelf(), sfn));
/*
* Remove from the hash table.
*/
PSUPDRVSESSION pSession;
const RTPROCESS Process = RTProcSelf();
const unsigned iHash = SESSION_HASH(sfn);
RTSpinlockAcquire(g_Spinlock);
pSession = g_apSessionHashTab[iHash];
if (pSession)
{
if ( pSession->sfn == sfn
&& pSession->Process == Process)
{
g_apSessionHashTab[iHash] = pSession->pNextHash;
pSession->pNextHash = NULL;
}
else
{
PSUPDRVSESSION pPrev = pSession;
pSession = pSession->pNextHash;
while (pSession)
{
if ( pSession->sfn == sfn
&& pSession->Process == Process)
{
pPrev->pNextHash = pSession->pNextHash;
pSession->pNextHash = NULL;
break;
}
/* next */
pPrev = pSession;
pSession = pSession->pNextHash;
}
}
}
RTSpinlockReleaseNoInts(g_Spinlock);
if (!pSession)
{
OSDBGPRINT(("VBoxDrvIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d sfn=%d\n", (int)Process, sfn));
return VERR_INVALID_PARAMETER;
}
/*
* Close the session.
*/
supdrvSessionRelease(pSession);
return 0;
}
/**
* Close a file device previously opened by VBoxDrvFreeBSDOpen
*
* @returns 0 on success.
* @param pDev The device.
* @param fFile The file descriptor flags.
* @param DevType The device type (CHR.
* @param pTd The calling thread.
*/
static void VBoxDrvFreeBSDDtr(void *pData)
{
PSUPDRVSESSION pSession = pData;
Log(("VBoxDrvFreeBSDDtr: pSession=%p\n", pSession));
/*
* Close the session.
*/
supdrvSessionRelease(pSession);
ASMAtomicDecU32(&g_cUsers);
}
/**
* Close file entry point.
*
* @param pDevObj Device object.
* @param pIrp Request packet.
*/
NTSTATUS _stdcall VBoxDrvNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
{
PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
PFILE_OBJECT pFileObj = pStack->FileObject;
PSUPDRVSESSION pSession = (PSUPDRVSESSION)pFileObj->FsContext;
Log(("VBoxDrvNtClose: pDevExt=%p pFileObj=%p pSession=%p\n", pDevExt, pFileObj, pSession));
if (pSession)
{
supdrvSessionRelease(pSession);
pFileObj->FsContext = NULL;
}
pIrp->IoStatus.Information = 0;
pIrp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(pIrp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
static int VBoxDrvSolarisClose(dev_t Dev, int flag, int otyp, cred_t *cred)
{
LogFlowFunc(("VBoxDrvSolarisClose: Dev=%#x\n", Dev));
#ifndef USE_SESSION_HASH
/*
* Get the session and free the soft state item.
*/
vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, getminor(Dev));
if (!pState)
{
LogRel(("VBoxDrvSolarisClose: no state data for %#x (%d)\n", Dev, getminor(Dev)));
return EFAULT;
}
PSUPDRVSESSION pSession = pState->pSession;
pState->pSession = NULL;
ddi_soft_state_free(g_pVBoxDrvSolarisState, getminor(Dev));
if (!pSession)
{
LogRel(("VBoxDrvSolarisClose: no session in state data for %#x (%d)\n", Dev, getminor(Dev)));
return EFAULT;
}
LogFlow(("VBoxDrvSolarisClose: Dev=%#x pSession=%p pid=%d r0proc=%p thread=%p\n",
Dev, pSession, RTProcSelf(), RTR0ProcHandleSelf(), RTThreadNativeSelf() ));
#else
const RTPROCESS Process = RTProcSelf();
const unsigned iHash = SESSION_HASH(Process);
PSUPDRVSESSION pSession;
/*
* Remove from the hash table.
*/
RTSpinlockAcquire(g_Spinlock);
pSession = g_apSessionHashTab[iHash];
if (pSession)
{
if (pSession->Process == Process)
{
g_apSessionHashTab[iHash] = pSession->pNextHash;
pSession->pNextHash = NULL;
}
else
{
PSUPDRVSESSION pPrev = pSession;
pSession = pSession->pNextHash;
while (pSession)
{
if (pSession->Process == Process)
{
pPrev->pNextHash = pSession->pNextHash;
pSession->pNextHash = NULL;
break;
}
/* next */
pPrev = pSession;
pSession = pSession->pNextHash;
}
}
}
RTSpinlockRelease(g_Spinlock);
if (!pSession)
{
LogRel(("VBoxDrvSolarisClose: WHAT?!? pSession == NULL! This must be a mistake... pid=%d (close)\n", (int)Process));
return EFAULT;
}
#endif
/*
* Close the session.
*/
supdrvSessionRelease(pSession);
return 0;
}
