/* $Id: testdrv.cpp,v 1.3 2001年09月05日 12:52:27 bird Exp $ */
//******************************************************************************
//******************************************************************************
// Test sample device driver dll
//
// The dll needs to be registered:
// HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\Driver_Name
// string key 'DllName' with path of driver dll
//******************************************************************************
//******************************************************************************
#define INCL_DOSPROFILE
#define INCL_DOSDEVICES
#define INCL_DOSDEVIOCTL
#define INCL_GPI
#define INCL_DOSFILEMGR /* File Manager values */
#define INCL_DOSERRORS /* DOS Error values */
#define INCL_DOSPROCESS /* DOS Process values */
#define INCL_DOSMISC /* DOS Miscellanous values */
#include <os2wrap.h> //Odin32 OS/2 api wrappers
#include <winconst.h>
#include <win32type.h>
#include <win32api.h>
#include <misc.h>
#include <win/winioctl.h>
#define TESTDRV_CATEGORY 0x40
//******************************************************************************
//******************************************************************************
HANDLE WIN32API DrvOpen(DWORD dwAccess, DWORD dwShare)
{
 APIRET rc;
 HFILE hfFileHandle = 0L; /* Handle for file being manipulated */
 ULONG ulAction = 0; /* Action taken by DosOpen */
 ULONG sharetype = 0;
 if(dwAccess & (GENERIC_READ_W &#124; GENERIC_WRITE_W))
 sharetype &#124;= OPEN_ACCESS_READWRITE;
 else
 if(dwAccess & GENERIC_WRITE_W)
 sharetype &#124;= OPEN_ACCESS_WRITEONLY;
 if(dwShare == 0)
 sharetype &#124;= OPEN_SHARE_DENYREADWRITE;
 else
 if(dwShare & (FILE_SHARE_READ_W &#124; FILE_SHARE_WRITE_W))
 sharetype &#124;= OPEN_SHARE_DENYNONE;
 else
 if(dwShare & FILE_SHARE_WRITE_W)
 sharetype &#124;= OPEN_SHARE_DENYREAD;
 else
 if(dwShare & FILE_SHARE_READ_W)
 sharetype &#124;= OPEN_SHARE_DENYWRITE;
tryopen:
 rc = DosOpen( "TESTDRV$", /* File path name */
 &hfFileHandle, /* File handle */
 &ulAction, /* Action taken */
 0,
 FILE_NORMAL,
 FILE_OPEN,
 sharetype,
 0L); /* No extended attribute */
 if(rc == ERROR_TOO_MANY_OPEN_FILES) {
 ULONG CurMaxFH;
 LONG ReqCount = 32;
 rc = DosSetRelMaxFH(&ReqCount, &CurMaxFH);
 if(rc) {
 dprintf(("DosSetRelMaxFH returned %d", rc));
 return rc;
 }
 dprintf(("DosOpen failed -> increased nr open files to %d", CurMaxFH));
 goto tryopen;
 }
 if(rc == NO_ERROR) {
 return hfFileHandle;
 }
 else return -1;
}
//******************************************************************************
//******************************************************************************
void WIN32API DrvClose(HANDLE hDevice)
{
 DosClose(hDevice);
}
//******************************************************************************
//******************************************************************************
BOOL WIN32API DrvIOCtl(HANDLE hDevice, DWORD dwIoControlCode,
 LPVOID lpInBuffer, DWORD nInBufferSize,
 LPVOID lpOutBuffer, DWORD nOutBufferSize,
 LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped)
{
 APIRET rc;
 ULONG ioctl;
 switch(dwIoControlCode) {
 default:
 return FALSE;
 }
 dprintf(("DrvIOCtl func %x: %x %d %x %d %x %x", dwIoControlCode, lpInBuffer, nInBufferSize, lpOutBuffer, nOutBufferSize, lpBytesReturned, lpOverlapped));
 *lpBytesReturned = nOutBufferSize;
 rc = DosDevIOCtl(hDevice, TESTDRV_CATEGORY, ioctl,
 lpInBuffer, nInBufferSize, &nInBufferSize,
 lpOutBuffer, nOutBufferSize, lpBytesReturned);
 dprintf(("DrvIOCtl returned %d bytes returned %d", rc , (lpBytesReturned) ? *lpBytesReturned : 0));
 return rc == NO_ERROR;
}
//******************************************************************************
//******************************************************************************
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