static tEplKernel EplApiProcessImageDeleteCompletion(
tEplApiProcessImageCopyJobInt* pCopyJob_p)
{
tEplKernel Ret = kEplSuccessful;
#if (TARGET_SYSTEM == _LINUX_) && defined(__KERNEL__)
if (pCopyJob_p->m_Event.m_pCompletion != NULL)
{
EplApiProcessImagePutUserPages(
pCopyJob_p->m_Event.m_pCompletion->m_apPageIn, FALSE);
EplApiProcessImagePutUserPages(
pCopyJob_p->m_Event.m_pCompletion->m_apPageOut, TRUE);
EPL_FREE(pCopyJob_p->m_Event.m_pCompletion);
pCopyJob_p->m_Event.m_pCompletion = NULL;
}
#elif (TARGET_SYSTEM == _LINUX_) && !defined(__KERNEL__)
sem_destroy(&pCopyJob_p->m_Event.m_semCompletion);
#elif (TARGET_SYSTEM == _WIN32_)
if ((pCopyJob_p->m_Event.m_hEvent != NULL)
&& (pCopyJob_p->m_Event.m_hEvent != INVALID_HANDLE_VALUE))
{
CloseHandle(pCopyJob_p->m_Event.m_hEvent);
pCopyJob_p->m_Event.m_hEvent = INVALID_HANDLE_VALUE;
}
#else
#error "OS currently not supported by EplApiProcessImage!"
#endif
//Exit:
return Ret;
}
static void EplApiProcessImageReleaseCompletion(struct kref* pKref_p)
{
tEplApiProcessImageCompletion* pCompletion = container_of(pKref_p, tEplApiProcessImageCompletion, m_Kref);
EplApiProcessImagePutUserPages(
pCompletion->m_apPageIn, FALSE);
EplApiProcessImagePutUserPages(
pCompletion->m_apPageOut, TRUE);
EPL_FREE(pCompletion);
}
static tEplKernel EplApiProcessImageGetUserPages(
tEplApiProcessImage* pImage_p,
tEplApiProcessImagePart* pPart_p, BOOL fOut_p,
struct page** ppPage_p)
{
tEplKernel Ret = kEplSuccessful;
int iRet;
unsigned int uiNrOfPages;
if (pPart_p->m_uiSize > EPL_API_PI_MAX_SIZE)
{
Ret = kEplApiPISizeExceeded;
goto Exit;
}
if ((pPart_p->m_uiSize > 0)
&& (pPart_p->m_pPart != NULL)
&& (pImage_p->m_pImage != NULL)
&& ((pPart_p->m_uiOffset + pPart_p->m_uiSize)
<= pImage_p->m_uiSize))
{
uiNrOfPages = (((unsigned long)pPart_p->m_pPart & ~PAGE_MASK)
+ pPart_p->m_uiSize + PAGE_SIZE - 1) >> PAGE_SHIFT;
down_read(¤t->mm->mmap_sem);
iRet = get_user_pages(current, current->mm,
(unsigned long)pPart_p->m_pPart,
uiNrOfPages, fOut_p, 0, ppPage_p,
NULL);
up_read(¤t->mm->mmap_sem);
if (iRet != uiNrOfPages)
{
PRINTF("%s: get_user_pages(%p, %u, %d, %p) returned %d\n",
__func__,
pPart_p->m_pPart,
uiNrOfPages, fOut_p,
ppPage_p, iRet);
EplApiProcessImagePutUserPages(ppPage_p, FALSE);
Ret = kEplApiPIOutOfMemory;
goto Exit;
}
}