DECLHIDDEN(int) rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
{
PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)pMem;
int rc;
switch (pMemOs2->Core.enmType)
{
case RTR0MEMOBJTYPE_PHYS_NC:
AssertMsgFailed(("RTR0MEMOBJTYPE_PHYS_NC\n"));
return VERR_INTERNAL_ERROR;
break;
case RTR0MEMOBJTYPE_PHYS:
if (!pMemOs2->Core.pv)
break;
case RTR0MEMOBJTYPE_MAPPING:
if (pMemOs2->Core.u.Mapping.R0Process == NIL_RTR0PROCESS)
break;
/* fall thru */
case RTR0MEMOBJTYPE_PAGE:
case RTR0MEMOBJTYPE_LOW:
case RTR0MEMOBJTYPE_CONT:
rc = KernVMFree(pMemOs2->Core.pv);
AssertMsg(!rc, ("rc=%d type=%d pv=%p cb=%#zx\n", rc, pMemOs2->Core.enmType, pMemOs2->Core.pv, pMemOs2->Core.cb));
break;
case RTR0MEMOBJTYPE_LOCK:
rc = KernVMUnlock(&pMemOs2->Lock);
AssertMsg(!rc, ("rc=%d\n", rc));
break;
case RTR0MEMOBJTYPE_RES_VIRT:
default:
AssertMsgFailed(("enmType=%d\n", pMemOs2->Core.enmType));
return VERR_INTERNAL_ERROR;
}
return VINF_SUCCESS;
}
DECLASM(int) VBoxDrvIOCtl(uint16_t sfn, uint8_t iCat, uint8_t iFunction, void *pvParm, void *pvData, uint16_t *pcbParm, uint16_t *pcbData)
{
/*
* 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 (!pSession)
{
OSDBGPRINT(("VBoxDrvIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
return VERR_INVALID_PARAMETER;
}
/*
* Verify the category and dispatch the IOCtl.
*/
if (RT_LIKELY(iCat == SUP_CTL_CATEGORY))
{
Log(("VBoxDrvIOCtl: pSession=%p iFunction=%#x pvParm=%p pvData=%p *pcbParm=%d *pcbData=%d\n", pSession, iFunction, pvParm, pvData, *pcbParm, *pcbData));
Assert(pvParm);
Assert(!pvData);
/*
* Lock the header.
*/
PSUPREQHDR pHdr = (PSUPREQHDR)pvParm;
AssertReturn(*pcbParm == sizeof(*pHdr), VERR_INVALID_PARAMETER);
KernVMLock_t Lock;
int rc = KernVMLock(VMDHL_WRITE, pHdr, *pcbParm, &Lock, (KernPageList_t *)-1, NULL);
AssertMsgReturn(!rc, ("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pHdr, *pcbParm, &Lock, rc), VERR_LOCK_FAILED);
/*
* Validate the header.
*/
if (RT_LIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) == SUPREQHDR_FLAGS_MAGIC))
{
uint32_t cbReq = RT_MAX(pHdr->cbIn, pHdr->cbOut);
if (RT_LIKELY( pHdr->cbIn >= sizeof(*pHdr)
&& pHdr->cbOut >= sizeof(*pHdr)
&& cbReq <= _1M*16))
{
/*
* Lock the rest of the buffer if necessary.
*/
if (((uintptr_t)pHdr & PAGE_OFFSET_MASK) + cbReq > PAGE_SIZE)
{
rc = KernVMUnlock(&Lock);
AssertMsgReturn(!rc, ("KernVMUnlock(Lock) -> %#x\n", rc), VERR_LOCK_FAILED);
rc = KernVMLock(VMDHL_WRITE, pHdr, cbReq, &Lock, (KernPageList_t *)-1, NULL);
AssertMsgReturn(!rc, ("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pHdr, cbReq, &Lock, rc), VERR_LOCK_FAILED);
}
/*
* Process the IOCtl.
*/
rc = supdrvIOCtl(iFunction, &g_DevExt, pSession, pHdr);
}
else
{
OSDBGPRINT(("VBoxDrvIOCtl: max(%#x,%#x); iCmd=%#x\n", pHdr->cbIn, pHdr->cbOut, iFunction));
rc = VERR_INVALID_PARAMETER;
}
}
else
{
OSDBGPRINT(("VBoxDrvIOCtl: bad magic fFlags=%#x; iCmd=%#x\n", pHdr->fFlags, iFunction));
rc = VERR_INVALID_PARAMETER;
}
/*
* Unlock and return.
*/
int rc2 = KernVMUnlock(&Lock);
AssertMsg(!rc2, ("rc2=%d\n", rc2)); NOREF(rc2);s
}
