WD_KernelBufLock

#define WD_KernelBufLock	(		h,
			pKerBuf
	)

Value:

    WD_FUNCTION(IOCTL_WD_KERNEL_BUF_LOCK, h, pKerBuf, \
        sizeof(WD_KERNEL_BUFFER), FALSE)

Allocates a contiguous or non-contiguous non-paged kernel buffer, and maps it to user address space.

This buffer should be used ONLY for shared buffer purposes (The buffer should NOT beused for DMA).

Parameters

[in]	h	Handle to WinDriver's kernel-mode driver as received from WD_Open().
[in,out]	pKerBuf	Pointer to a WD_KERNEL_BUFFER information structure

Returns

Returns WD_STATUS_SUCCESS (0) on success, or an appropriate error code otherwise

WD_KERNEL_BUFFER buf;
DWORD dwStatus;
 
BZERO(buf);
 
buf.qwBytes = 200000;
buf.dwOptions = ALLOCATE_CONTIG_BUFFER | ALLOCATE_CACHED_BUFFER;
 
dwStatus = WD_KernelBufLock(hWD, &buf);
if (dwStatus)
{
    printf("Could not lock down buffer\n");
}
else
{
    /* To access the memory from your user mode
        application, use buf.pUserAddr. */
}

Definition at line 1948 of file windrvr.h.