| 1 | //******************************************************************************
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| 2 | //******************************************************************************
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| 3 | // Test sample device driver dll
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| 4 | //
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| 5 | // The dll needs to be registered:
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| 6 | // HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\Driver_Name
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| 7 | // string key 'DllName' with path of driver dll
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| 8 | //******************************************************************************
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| 9 | //******************************************************************************
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| 10 | #define INCL_DOSPROFILE
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| 11 | #define INCL_DOSDEVICES
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| 12 | #define INCL_DOSDEVIOCTL
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| 13 | #define INCL_GPI
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| 14 | #define INCL_DOSFILEMGR /* File Manager values */
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| 15 | #define INCL_DOSERRORS /* DOS Error values */
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| 16 | #define INCL_DOSPROCESS /* DOS Process values */
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| 17 | #define INCL_DOSMISC /* DOS Miscellanous values */
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| 18 | #include <os2wrap.h> //Odin32 OS/2 api wrappers
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| 19 |
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| 20 | #include <winconst.h>
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| 21 | #include <win32type.h>
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| 22 | #include <win32api.h>
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| 23 | #include <misc.h>
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| 24 | #include <win\winioctl.h>
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| 25 |
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| 26 | #define TESTDRV_CATEGORY 0x40
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| 27 |
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| 28 | //******************************************************************************
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| 29 | //******************************************************************************
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| 30 | HANDLE WIN32API DrvOpen(DWORD dwAccess, DWORD dwShare)
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| 31 | {
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| 32 | APIRET rc;
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| 33 | HFILE hfFileHandle = 0L; /* Handle for file being manipulated */
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| 34 | ULONG ulAction = 0; /* Action taken by DosOpen */
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| 35 | ULONG sharetype = 0;
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| 36 |
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| 37 | if(dwAccess & (GENERIC_READ_W | GENERIC_WRITE_W))
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| 38 | sharetype |= OPEN_ACCESS_READWRITE;
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| 39 | else
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| 40 | if(dwAccess & GENERIC_WRITE_W)
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| 41 | sharetype |= OPEN_ACCESS_WRITEONLY;
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| 42 |
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| 43 | if(dwShare == 0)
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| 44 | sharetype |= OPEN_SHARE_DENYREADWRITE;
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| 45 | else
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| 46 | if(dwShare & (FILE_SHARE_READ_W | FILE_SHARE_WRITE_W))
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| 47 | sharetype |= OPEN_SHARE_DENYNONE;
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| 48 | else
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| 49 | if(dwShare & FILE_SHARE_WRITE_W)
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| 50 | sharetype |= OPEN_SHARE_DENYREAD;
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| 51 | else
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| 52 | if(dwShare & FILE_SHARE_READ_W)
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| 53 | sharetype |= OPEN_SHARE_DENYWRITE;
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| 54 |
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| 55 | tryopen:
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| 56 | rc = DosOpen( "TESTDRV$", /* File path name */
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| 57 | &hfFileHandle, /* File handle */
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| 58 | &ulAction, /* Action taken */
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| 59 | 0,
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| 60 | FILE_NORMAL,
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| 61 | FILE_OPEN,
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| 62 | sharetype,
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| 63 | 0L); /* No extended attribute */
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| 64 |
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| 65 | if(rc == ERROR_TOO_MANY_OPEN_FILES) {
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| 66 | ULONG CurMaxFH;
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| 67 | LONG ReqCount = 32;
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| 68 |
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| 69 | rc = DosSetRelMaxFH(&ReqCount, &CurMaxFH);
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| 70 | if(rc) {
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| 71 | dprintf(("DosSetRelMaxFH returned %d", rc));
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| 72 | return rc;
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| 73 | }
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| 74 | dprintf(("DosOpen failed -> increased nr open files to %d", CurMaxFH));
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| 75 | goto tryopen;
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| 76 | }
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| 77 |
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| 78 | if(rc == NO_ERROR) {
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| 79 | return hfFileHandle;
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| 80 | }
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| 81 | else return -1;
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| 82 | }
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| 83 | //******************************************************************************
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| 84 | //******************************************************************************
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| 85 | void WIN32API DrvClose(HANDLE hDevice)
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| 86 | {
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| 87 | DosClose(hDevice);
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| 88 | }
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| 89 | //******************************************************************************
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| 90 | //******************************************************************************
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| 91 | BOOL WIN32API DrvIOCtl(HANDLE hDevice, DWORD dwIoControlCode,
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| 92 | LPVOID lpInBuffer, DWORD nInBufferSize,
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| 93 | LPVOID lpOutBuffer, DWORD nOutBufferSize,
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| 94 | LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped)
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| 95 | {
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| 96 | APIRET rc;
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| 97 | ULONG ioctl;
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| 98 |
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| 99 | switch(dwIoControlCode) {
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| 100 | default:
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| 101 | return FALSE;
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| 102 | }
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| 103 | dprintf(("DrvIOCtl func %x: %x %d %x %d %x %x", dwIoControlCode, lpInBuffer, nInBufferSize, lpOutBuffer, nOutBufferSize, lpBytesReturned, lpOverlapped));
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| 104 |
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| 105 | *lpBytesReturned = nOutBufferSize;
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| 106 |
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| 107 | rc = DosDevIOCtl(hDevice, TESTDRV_CATEGORY, ioctl,
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| 108 | lpInBuffer, nInBufferSize, &nInBufferSize,
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| 109 | lpOutBuffer, nOutBufferSize, lpBytesReturned);
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| 110 |
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| 111 | dprintf(("DrvIOCtl returned %d bytes returned %d", rc , (lpBytesReturned) ? *lpBytesReturned : 0));
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| 112 | return rc == NO_ERROR;
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| 113 | }
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| 114 | //******************************************************************************
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| 115 | //******************************************************************************
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| 116 |
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