source: trunk/src/kernel32/HandleManager.cpp@ 657

Last change on this file since 657 was 578, checked in by phaller, 26 years ago

Fix: HandleManager will no more return 0 as valid file handle
File size: 85.2 KB
Line 
1/* $Id: HandleManager.cpp,v 1.11 1999-08-19 12:57:41 phaller Exp $ */
2
3/*
4 *
5 * Project Odin Software License can be found in LICENSE.TXT
6 *
7 */
8/*
9 * Win32 Unified Handle Manager for OS/2
10 *
11 * 1998/02/11 PH Patrick Haller (haller@zebra.fh-weingarten.de)
12 *
13 * @(#) HandleManager.Cpp 1.0.0 1998/02/11 PH start
14 */
15
16#undef DEBUG_LOCAL
17//#define DEBUG_LOCAL
18
19
20/*****************************************************************************
21 * Remark *
22 *****************************************************************************
23
24 1998/02/11 PH Even overlapped I/O could be simulated by another subsystem
25 thread with a request queue. We'll see if required ...
26
27
28 Flush (flush handle buffer)
29 WaitForSingleObject
30 WaitForMultipleObjects (?)
31
32 1998/02/12 PH IBM and Microsoft disagree about the definition of FILE_TYPE_xxx
33 Interesting, Open32 returns Microsoft's values ...
34
35 1998/02/12 PH Handles should be equipped with a locking mechanism, in particular
36 as we publish a pointer into the handle table via HMHandleQueryHandleData
37
38 */
39
40
41/*****************************************************************************
42 * Includes *
43 *****************************************************************************/
44
45#include <os2win.h>
46#include <stdlib.h>
47#include <string.h>
48
49#include "unicode.h"
50#include "misc.h"
51
52#include "HandleManager.H"
53#include "HMDevice.h"
54#include "HMOpen32.h"
55#include "HMEvent.h"
56#include "HMMutex.h"
57#include "HMSemaphore.h"
58
59
60/*****************************************************************************
61 * Defines *
62 *****************************************************************************/
63
64 /* this is the size of our currently static handle table */
65#define MAX_OS2_HMHANDLES 2048
66
67
68/*****************************************************************************
69 * Structures *
70 *****************************************************************************/
71
72
73typedef struct _HMHANDLE
74{
75 HMDeviceHandler *pDeviceHandler; /* handler for this pseudo-device */
76 HMHANDLEDATA hmHandleData; /* attributes of the handle */
77} HMHANDLE, *PHMHANDLE;
78
79
80typedef struct _HMDEVICE
81{
82 struct _HMDEVICE *pNext; /* pointer to next device in chain */
83
84 PSZ pszDeviceName; /* name or alias of the pseudo-device */
85 HMDeviceHandler *pDeviceHandler; /* handler for this pseudo-device */
86} HMDEVICE, *PHMDEVICE;
87
88
89/*****************************************************************************
90 * This pseudo-device logs all device requests to the logfile and returns *
91 * ERROR_INVALID_FUNCTION to virtually all requests -> debugging *
92 *****************************************************************************/
93class HMDeviceDebugClass : public HMDeviceHandler
94{
95 public:
96 HMDeviceDebugClass(LPCSTR lpDeviceName) : HMDeviceHandler(lpDeviceName) {}
97};
98
99
100/*****************************************************************************
101 * Process Global Structures *
102 *****************************************************************************/
103
104
105 /* the device name is repeated here to enable device alias names */
106static PHMDEVICE TabWin32Devices = NULL;
107static HMHANDLE TabWin32Handles[MAX_OS2_HMHANDLES]; /* static handle table */
108
109
110struct _HMGlobals
111{
112 HANDLE hStandardIn; /* stdin handle to CONIN$ */
113 HANDLE hStandardOut; /* stdout handle to CONOUT$ */
114 HANDLE hStandardError; /* stderr handle to CONOUT$ */
115
116 BOOL fIsInitialized; /* if HM is initialized already ? */
117 /* this MUST !!! be false initially */
118
119 HMDeviceHandler *pHMOpen32; /* default handle manager instance */
120 HMDeviceHandler *pHMEvent; /* static instances of subsystems */
121 HMDeviceHandler *pHMMutex;
122 HMDeviceHandler *pHMSemaphore;
123
124 ULONG ulHandleLast; /* index of last used handle */
125} HMGlobals;
126
127
128/*****************************************************************************
129 * Local Prototypes *
130 *****************************************************************************/
131
132 /* get appropriate device handler by the device name */
133static HMDeviceHandler* _Optlink _HMDeviceFind(PSZ pszDeviceName);
134
135 /* get next free handle from the handle table */
136static ULONG _Optlink _HMHandleGetFree(void);
137
138 /* get handle table entry from handle */
139static ULONG _Optlink _HMHandleQuery(HANDLE hHandle);
140
141
142
143/*****************************************************************************
144 * Name : static HMDeviceHandler * _HMDeviceFind
145 * Purpose : obtain appropriate device handler from the table by searching
146 * for a device name or alias
147 * Parameters: PSZ pszDeviceName
148 * Variables :
149 * Result : HMDeviceHandler * - pointer to the handler object
150 * Remark :
151 * Status :
152 *
153 * Author : Patrick Haller [Wed, 1998/02/11 20:42]
154 *****************************************************************************/
155
156static HMDeviceHandler *_HMDeviceFind (PSZ pszDeviceName)
157{
158 PHMDEVICE pHMDevice; /* iterator over the device table */
159
160 if (pszDeviceName != NULL)
161 for (pHMDevice = TabWin32Devices; /* loop over all devices in the table */
162 pHMDevice != NULL;
163 pHMDevice = pHMDevice->pNext)
164 {
165 if (stricmp(pHMDevice->pszDeviceName, /* case-insensitive search */
166 pszDeviceName) == 0)
167 return (pHMDevice->pDeviceHandler); /* OK, we've found our device */
168 }
169
170 return (HMGlobals.pHMOpen32); /* haven't found anything, return default */
171}
172
173
174/*****************************************************************************
175 * Name : static int _HMHandleGetFree
176 * Purpose : get index to first free handle in the handle table
177 * Parameters:
178 * Variables :
179 * Result : int iIndex - index to the table or -1 in case of error
180 * Remark :
181 * Status :
182 *
183 * Author : Patrick Haller [Wed, 1998/02/11 20:43]
184 *****************************************************************************/
185
186static ULONG _HMHandleGetFree(void)
187{
188 register ULONG ulLoop;
189
190 for (ulLoop = 1; // @@@PH Note, this is an experimental change
191 // 0L as hHandle is sometimes considered invalid!
192 // this will never return 0l as free handle now.
193 ulLoop < MAX_OS2_HMHANDLES;
194 ulLoop++)
195 {
196 /* free handle found ? */
197 if (INVALID_HANDLE_VALUE == TabWin32Handles[ulLoop].hmHandleData.hHMHandle)
198 return (ulLoop); /* OK, then return it to the caller */
199 }
200
201 return (INVALID_HANDLE_VALUE); /* haven't found any free handle */
202}
203
204
205/*****************************************************************************
206 * Name : static int _HMHandleQuery
207 * Purpose : gets the index of handle table entry as fast as possible from
208 * the specified handle
209 * Parameters: HANDLE hHandle
210 * Variables :
211 * Result : index or -1 in case of error
212 * Remark :
213 * Status :
214 *
215 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
216 *****************************************************************************/
217
218static ULONG _HMHandleQuery(HANDLE hHandle)
219{
220 if (hHandle > MAX_OS2_HMHANDLES) /* check the table range */
221 return (INVALID_HANDLE_VALUE); /* nope, ERROR_INVALID_HANDLE */
222
223 /* Oops, invalid handle ! */
224 if (INVALID_HANDLE_VALUE == TabWin32Handles[hHandle].hmHandleData.hHMHandle)
225 return (INVALID_HANDLE_VALUE); /* nope, ERROR_INVALID_HANDLE */
226
227 return ( hHandle); /* OK, we've got our handle index */
228}
229
230
231/*****************************************************************************
232 * Name : DWORD HMDeviceRegister
233 * Purpose : register a device with the handle manager
234 * Parameters: PSZ pszDeviceName
235 * HMDeviceHandler *pDeviceHandler
236 * Variables :
237 * Result : API returncode
238 * Remark :
239 * Status :
240 *
241 * Author : Patrick Haller [Wed, 1998/02/12 20:44]
242 *****************************************************************************/
243
244DWORD HMDeviceRegister(PSZ pszDeviceName,
245 HMDeviceHandler *pDeviceHandler)
246{
247 PHMDEVICE pHMDevice; /* our new device to be allocated */
248
249 if ( (pszDeviceName == NULL) || /* check parameters */
250 (pDeviceHandler == NULL) )
251 return (ERROR_INVALID_PARAMETER); /* raise error conditon */
252
253
254 pHMDevice = (PHMDEVICE) malloc (sizeof (HMDEVICE) ); /* allocate memory */
255 if (pHMDevice == NULL) /* check proper allocation */
256 return (ERROR_NOT_ENOUGH_MEMORY); /* signal error */
257
258 pHMDevice->pszDeviceName = strdup(pszDeviceName); /* copy name */
259 if (pHMDevice->pszDeviceName == NULL) /* check proper allocation */
260 {
261 free (pHMDevice); /* free previously allocated memory */
262 return (ERROR_NOT_ENOUGH_MEMORY); /* signal error */
263 }
264
265 pHMDevice->pDeviceHandler = pDeviceHandler; /* store pointer to device */
266 pHMDevice->pNext = TabWin32Devices; /* establish linkage */
267
268 TabWin32Devices = pHMDevice; /* insert new node as root in the list */
269
270 return (NO_ERROR);
271}
272
273
274/*****************************************************************************
275 * Name : DWORD HMInitialize
276 * Purpose : Initialize the handlemanager
277 * Parameters: -
278 * Variables : -
279 * Result : always NO_ERROR
280 * Remark : this routine just stores the standard handles in the
281 * internal table within the HandleManager
282 * Status :
283 *
284 * Author : Patrick Haller [Wed, 1998/02/12 20:44]
285 *****************************************************************************/
286
287DWORD HMInitialize(void)
288{
289 ULONG ulIndex;
290
291 if (HMGlobals.fIsInitialized != TRUE)
292 {
293 HMGlobals.fIsInitialized = TRUE; /* OK, done */
294
295 // fill handle table
296 for (ulIndex = 0;
297 ulIndex < MAX_OS2_HMHANDLES;
298 ulIndex++)
299 TabWin32Handles[ulIndex].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
300
301 dprintf(("KERNEL32:HandleManager:HMInitialize() storing handles.\n"));
302
303 memset(&HMGlobals, /* zero out the structure first */
304 0,
305 sizeof(HMGlobals));
306
307 /* copy standard handles from OS/2's Open32 Subsystem */
308 HMSetStdHandle(STD_INPUT_HANDLE, GetStdHandle(STD_INPUT_HANDLE));
309 HMSetStdHandle(STD_OUTPUT_HANDLE, GetStdHandle(STD_OUTPUT_HANDLE));
310 HMSetStdHandle(STD_ERROR_HANDLE, GetStdHandle(STD_ERROR_HANDLE));
311
312 /* create handle manager instance for Open32 handles */
313 HMGlobals.pHMOpen32 = new HMDeviceOpen32Class("\\\\.\\");
314 HMGlobals.pHMEvent = new HMDeviceEventClass("\\\\EVENT\\");
315 HMGlobals.pHMMutex = new HMDeviceMutexClass("\\\\MUTEX\\");
316 HMGlobals.pHMSemaphore = new HMDeviceSemaphoreClass("\\\\SEM\\");
317 }
318 return (NO_ERROR);
319}
320
321
322/*****************************************************************************
323 * Name : DWORD HMTerminate
324 * Purpose : Terminate the handlemanager
325 * Parameters:
326 * Variables :
327 * Result :
328 * Remark :
329 * Status :
330 *
331 * Author : Patrick Haller [Wed, 1998/02/12 20:44]
332 *****************************************************************************/
333
334DWORD HMTerminate(void)
335{
336 /* @@@PH we could deallocate the device list here */
337
338 delete HMGlobals.pHMOpen32;
339 delete HMGlobals.pHMEvent;
340 delete HMGlobals.pHMMutex;
341 delete HMGlobals.pHMSemaphore;
342
343 return (NO_ERROR);
344}
345
346
347/*****************************************************************************/
348/* handle translation buffer management */
349/* */
350/* Since some Win32 applications rely (!) on 16-bit handles, we've got to do */
351/* 32-bit to 16-bit and vs vsa translation here. */
352/* Filehandle-based functions should be routed via the handlemanager instead */
353/* of going to Open32 directly. */
354/*****************************************************************************/
355
356
357/*****************************************************************************
358 * Name : DWORD HMHandleAllocate
359 * Purpose : allocate a handle in the translation table
360 * Parameters: PULONG pHandle16 - to return the allocated handle
361 * ULONG hHandle32 - the associated OS/2 handle
362 * Variables :
363 * Result : API returncode
364 * Remark : no parameter checking is done, phHandle may not be invalid
365 * hHandle32 shouldn't be 0
366 * Should be protected with a HM-Mutex !
367 * Status :
368 *
369 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
370 *****************************************************************************/
371
372DWORD HMHandleAllocate (PULONG phHandle16,
373 ULONG hHandleOS2)
374{
375 register ULONG ulHandle;
376
377#ifdef DEBUG_LOCAL
378 dprintf(("KERNEL32: HMHandleAllocate (%08xh,%08xh)\n",
379 phHandle16,
380 hHandleOS2));
381#endif
382
383 ulHandle = HMGlobals.ulHandleLast; /* get free handle */
384
385 do
386 {
387 /* check if handle is free */
388 if (TabWin32Handles[ulHandle].hmHandleData.hHMHandle == INVALID_HANDLE_VALUE)
389 {
390 *phHandle16 = ulHandle;
391 TabWin32Handles[ulHandle].hmHandleData.hHMHandle = hHandleOS2;
392 HMGlobals.ulHandleLast = ulHandle; /* to shorten search times */
393
394 return (NO_ERROR); /* OK */
395 }
396
397 ulHandle++; /* skip to next entry */
398
399 if (ulHandle >= MAX_OS2_HMHANDLES) /* check boundary */
400 ulHandle = 1;
401 }
402 while (ulHandle != HMGlobals.ulHandleLast);
403
404 return (ERROR_TOO_MANY_OPEN_FILES); /* OK, we're done */
405}
406
407
408/*****************************************************************************
409 * Name : DWORD HMHandleFree
410 * Purpose : free a handle from the translation table
411 * Parameters: ULONG hHandle16 - the handle to be freed
412 * Variables :
413 * Result : API returncode
414 * Remark : no parameter checking is done, hHandle16 MAY NEVER exceed
415 * the MAX_TRANSLATION_HANDLES boundary
416 * Status :
417 *
418 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
419 *****************************************************************************/
420
421DWORD HMHandleFree (ULONG hHandle16)
422{
423 ULONG rc; /* API returncode */
424
425#ifdef DEBUG_LOCAL
426 dprintf(("KERNEL32: HMHandleFree (%08xh)\n",
427 hHandle16));
428#endif
429
430 rc = HMHandleValidate(hHandle16); /* verify handle */
431 if (rc != NO_ERROR) /* check errors */
432 return (rc); /* raise error condition */
433
434 TabWin32Handles[hHandle16].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
435 /* OK, done */
436
437 return (NO_ERROR);
438}
439
440
441/*****************************************************************************
442 * Name : DWORD HMHandleValidate
443 * Purpose : validate a handle through the translation table
444 * Parameters: ULONG hHandle16 - the handle to be verified
445 * Variables :
446 * Result : API returncode
447 * Remark :
448 * Status :
449 *
450 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
451 *****************************************************************************/
452
453DWORD HMHandleValidate (ULONG hHandle16)
454{
455#ifdef DEBUG_LOCAL
456 dprintf(("KERNEL32: HMHandleValidate (%08xh)\n",
457 hHandle16));
458#endif
459
460 if (hHandle16 >= MAX_OS2_HMHANDLES) /* check boundary */
461 return (ERROR_INVALID_HANDLE); /* raise error condition */
462
463 if (TabWin32Handles[hHandle16].hmHandleData.hHMHandle == INVALID_HANDLE_VALUE)
464 /* valid ? */
465 return (ERROR_INVALID_HANDLE); /* raise error condition */
466
467 return (NO_ERROR);
468}
469
470
471/*****************************************************************************
472 * Name : DWORD HMHandleTranslateToWin
473 * Purpose : translate a 32-bit OS/2 handle to the associated windows handle
474 * Parameters: ULONG hHandle32 - the OS/2 handle
475 * PULONG phHandle16 - the associated windows handle
476 * Variables :
477 * Result : API returncode
478 * Remark :
479 * Status :
480 *
481 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
482 *****************************************************************************/
483
484DWORD HMHandleTranslateToWin (ULONG hHandleOS2,
485 PULONG phHandle16)
486{
487 ULONG rc; /* API returncode */
488 register ULONG ulIndex; /* index counter over the table */
489
490#ifdef DEBUG_LOCAL
491 dprintf(("KERNEL32: HMHandleTranslateToWin (%08xh, %08xh)\n",
492 hHandleOS2,
493 phHandle16));
494#endif
495
496 for (ulIndex = 1;
497 ulIndex < MAX_OS2_HMHANDLES;
498 ulIndex++)
499 {
500 /* look for the handle */
501 if (TabWin32Handles[ulIndex].hmHandleData.hHMHandle == hHandleOS2)
502 {
503 *phHandle16 = ulIndex; /* deliver result */
504 return (NO_ERROR); /* OK */
505 }
506 }
507
508 return (ERROR_INVALID_HANDLE); /* raise error condition */
509}
510
511
512/*****************************************************************************
513 * Name : DWORD HMHandleTranslateToOS2
514 * Purpose : translate a 16-bit Win32 handle to the associated OS/2 handle
515 * Parameters: ULONG hHandle16 - the windows handle
516 * PULONG phHandle32 - the associated OS/2 handle
517 * Variables :
518 * Result : API returncode
519 * Remark :
520 * Status :
521 *
522 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
523 *****************************************************************************/
524
525DWORD HMHandleTranslateToOS2 (ULONG hHandle16,
526 PULONG phHandleOS2)
527{
528#ifdef DEBUG_LOCAL
529 dprintf(("KERNEL32: HMHandleTranslateToOS2 (%08xh, %08xh)\n",
530 hHandle16,
531 phHandleOS2));
532#endif
533
534 if (HMHandleValidate(hHandle16) == NO_ERROR) /* verify handle */
535 {
536 *phHandleOS2 = TabWin32Handles[hHandle16].hmHandleData.hHMHandle;
537 return (NO_ERROR);
538 }
539
540 return (ERROR_INVALID_HANDLE); /* raise error condition */
541}
542
543
544/*****************************************************************************
545 * Name : DWORD HMHandleTranslateToOS2i
546 * Purpose : translate a 16-bit Win32 handle to the associated OS/2 handle
547 * Parameters: ULONG hHandle16 - the windows handle
548 * Variables :
549 * Result : OS/2 handle
550 * Remark : no checkinf
551 * Status :
552 *
553 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
554 *****************************************************************************/
555
556DWORD HMHandleTranslateToOS2i (ULONG hHandle16)
557{
558#ifdef DEBUG_LOCAL
559 dprintf(("KERNEL32: HMHandleTranslateToOS2i (%08xh)\n",
560 hHandle16));
561#endif
562
563 return(TabWin32Handles[hHandle16].hmHandleData.hHMHandle);
564}
565
566
567
568/*****************************************************************************
569 * Name : HANDLE _HMGetStdHandle
570 * Purpose : replacement for Open32's GetStdHandle function
571 * Parameters: DWORD nStdHandle
572 * Variables :
573 * Result : HANDLE to standard device
574 * Remark :
575 * Status :
576 *
577 * Author : Patrick Haller [Wed, 1998/02/12 20:44]
578 *****************************************************************************/
579
580HANDLE HMGetStdHandle(DWORD nStdHandle)
581{
582 switch (nStdHandle)
583 {
584 case STD_INPUT_HANDLE: return (HMGlobals.hStandardIn);
585 case STD_OUTPUT_HANDLE: return (HMGlobals.hStandardOut);
586 case STD_ERROR_HANDLE: return (HMGlobals.hStandardError);
587
588 default:
589 {
590 SetLastError(ERROR_INVALID_PARAMETER); /* set error information */
591 return (INVALID_HANDLE_VALUE); /* raise error condition */
592 }
593 }
594}
595
596
597/*****************************************************************************
598 * Name : HANDLE _HMSetStdHandle
599 * Purpose : replacement for Open32's SetStdHandle function
600 * Parameters: DWORD nStdHandle
601 * HANDLE hHandle
602 * Variables :
603 * Result : BOOL fSuccess
604 * Remark :
605 * Status :
606 *
607 * Author : Patrick Haller [Wed, 1998/02/12 20:44]
608 *****************************************************************************/
609
610BOOL HMSetStdHandle(DWORD nStdHandle,
611 HANDLE hHandle)
612{
613 switch (nStdHandle)
614 {
615 case STD_INPUT_HANDLE: HMGlobals.hStandardIn = hHandle; return TRUE;
616 case STD_OUTPUT_HANDLE: HMGlobals.hStandardOut = hHandle; return TRUE;
617 case STD_ERROR_HANDLE: HMGlobals.hStandardError = hHandle; return TRUE;
618
619 default:
620 {
621 SetLastError(ERROR_INVALID_PARAMETER); /* set error information */
622 return (FALSE); /* raise error condition */
623 }
624 }
625}
626
627
628/*****************************************************************************
629 * Name : HANDLE HMCreateFile
630 * Purpose : Wrapper for the CreateFile() API
631 * Parameters:
632 * Variables :
633 * Result :
634 * Remark : Fix parameters passed to the HMDeviceManager::CreateFile
635 * Supply access mode and share mode validation routines
636 * Status :
637 *
638 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
639 *****************************************************************************/
640
641HFILE HMCreateFile(LPCSTR lpFileName,
642 DWORD dwDesiredAccess,
643 DWORD dwShareMode,
644 LPSECURITY_ATTRIBUTES lpSecurityAttributes,
645 DWORD dwCreationDisposition,
646 DWORD dwFlagsAndAttributes,
647 HANDLE hTemplateFile)
648{
649 int iIndex; /* index into the handle table */
650 int iIndexNew; /* index into the handle table */
651 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
652 HANDLE hResult;
653 DWORD rc; /* API return code */
654 PHMHANDLEDATA pHMHandleData;
655 HMHANDLEDATA HMHandleTemp; /* temporary buffer for handle data */
656
657 /* create new handle by either lpFileName or hTemplateFile */
658 if (lpFileName == NULL) /* this indicates creation from template */
659 {
660 iIndex = _HMHandleQuery(hTemplateFile); /* query table for template */
661 if (-1 == iIndex) /* this device is unknown to us */
662 {
663 SetLastError (ERROR_INVALID_HANDLE);
664 return INVALID_HANDLE_VALUE;
665 }
666 else
667 {
668 /* to pass to handler */
669 pHMHandleData = &TabWin32Handles[iIndex].hmHandleData;
670 pDeviceHandler = TabWin32Handles[iIndex].pDeviceHandler;
671 }
672 }
673 else
674 {
675 pDeviceHandler = _HMDeviceFind((PSZ)lpFileName); /* find device */
676
677 if (NULL == pDeviceHandler) /* this name is unknown to us */
678 {
679 SetLastError(ERROR_FILE_NOT_FOUND);
680 return (INVALID_HANDLE_VALUE); /* signal error */
681 }
682 else
683 pHMHandleData = NULL;
684 }
685
686
687 iIndexNew = _HMHandleGetFree(); /* get free handle */
688 if (-1 == iIndexNew) /* oops, no free handles ! */
689 {
690 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
691 return (INVALID_HANDLE_VALUE); /* signal error */
692 }
693
694
695 /* initialize the complete HMHANDLEDATA structure */
696 if (lpFileName == NULL) /* create from template */
697 memcpy (&TabWin32Handles[iIndexNew].hmHandleData,
698 &TabWin32Handles[iIndex].hmHandleData,
699 sizeof(HMHANDLEDATA));
700 else
701 {
702 HMHandleTemp.dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
703 HMHandleTemp.dwAccess = dwDesiredAccess;
704 HMHandleTemp.dwShare = dwShareMode;
705 HMHandleTemp.dwCreation = dwCreationDisposition;
706 HMHandleTemp.dwFlags = dwFlagsAndAttributes;
707 HMHandleTemp.lpHandlerData = NULL;
708 }
709
710 /* we've got to mark the handle as occupied here, since another device */
711 /* could be created within the device handler -> deadlock */
712
713 /* write appropriate entry into the handle table if open succeeded */
714 HMHandleTemp.hHMHandle = iIndexNew;
715 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
716
717 /* now copy back our temporary handle data */
718 memcpy(&TabWin32Handles[iIndexNew].hmHandleData,
719 &HMHandleTemp,
720 sizeof(HMHANDLEDATA));
721
722 rc = pDeviceHandler->CreateFile(lpFileName, /* call the device handler */
723 &HMHandleTemp,
724 lpSecurityAttributes,
725 pHMHandleData);
726
727#ifdef DEBUG_LOCAL
728 dprintf(("KERNEL32/HandleManager:CheckPoint2: %s lpHandlerData=%08xh\n",
729 lpFileName,
730 HMHandleTemp.lpHandlerData));
731#endif
732
733 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
734 {
735 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
736 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
737 return (INVALID_HANDLE_VALUE); /* signal error */
738 }
739 else
740 {
741 /* copy data fields that might have been modified by CreateFile */
742 memcpy(&TabWin32Handles[iIndexNew].hmHandleData,
743 &HMHandleTemp,
744 sizeof(HMHANDLEDATA));
745 }
746
747
748#ifdef DEBUG_LOCAL
749 dprintf(("KERNEL32/HandleManager: CreateFile(%s)=%08xh\n",
750 lpFileName,
751 iIndexNew));
752#endif
753
754 return (HFILE)iIndexNew; /* return valid handle */
755}
756
757
758/*****************************************************************************
759 * Name : HANDLE HMOpenFile
760 * Purpose : Wrapper for the OpenFile() API
761 * Parameters:
762 * Variables :
763 * Result :
764 * Remark : Fix parameters passed to the HMDeviceManager::OpenFile
765 * Supply access mode and share mode validation routines
766 * Status :
767 *
768 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
769 *****************************************************************************/
770
771
772/***********************************************************************
773 * FILE_ConvertOFMode
774 *
775 * Convert OF_* mode into flags for CreateFile.
776 */
777static void FILE_ConvertOFMode( INT mode, DWORD *access, DWORD *sharing )
778{
779 switch(mode & 0x03)
780 {
781 case OF_READ: *access = GENERIC_READ; break;
782 case OF_WRITE: *access = GENERIC_WRITE; break;
783 case OF_READWRITE: *access = GENERIC_READ | GENERIC_WRITE; break;
784 default: *access = 0; break;
785 }
786 switch(mode & 0x70)
787 {
788 case OF_SHARE_EXCLUSIVE: *sharing = 0; break;
789 case OF_SHARE_DENY_WRITE: *sharing = FILE_SHARE_READ; break;
790 case OF_SHARE_DENY_READ: *sharing = FILE_SHARE_WRITE; break;
791 case OF_SHARE_DENY_NONE:
792 case OF_SHARE_COMPAT:
793 default: *sharing = FILE_SHARE_READ | FILE_SHARE_WRITE; break;
794 }
795}
796
797HANDLE HMOpenFile(LPCSTR lpFileName,
798 OFSTRUCT* pOFStruct,
799 UINT fuMode)
800{
801 int iIndex; /* index into the handle table */
802 int iIndexNew; /* index into the handle table */
803 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
804 PHMHANDLEDATA pHMHandleData;
805 DWORD rc; /* API return code */
806
807
808 pDeviceHandler = _HMDeviceFind((PSZ)lpFileName); /* find device */
809 if (NULL == pDeviceHandler) /* this name is unknown to us */
810 {
811 SetLastError(ERROR_FILE_NOT_FOUND);
812 return (INVALID_HANDLE_VALUE); /* signal error */
813 }
814 else
815 pHMHandleData = NULL;
816
817
818 iIndexNew = _HMHandleGetFree(); /* get free handle */
819 if (-1 == iIndexNew) /* oops, no free handles ! */
820 {
821 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
822 return (INVALID_HANDLE_VALUE); /* signal error */
823 }
824
825
826 /* initialize the complete HMHANDLEDATA structure */
827 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
828 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
829
830 FILE_ConvertOFMode(fuMode, /* map OF_flags */
831 &pHMHandleData->dwAccess,
832 &pHMHandleData->dwShare);
833
834 pHMHandleData->dwCreation = 0;
835 pHMHandleData->dwFlags = 0;
836 pHMHandleData->lpHandlerData = NULL;
837
838
839 /* we've got to mark the handle as occupied here, since another device */
840 /* could be created within the device handler -> deadlock */
841
842 /* write appropriate entry into the handle table if open succeeded */
843 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
844 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
845
846 rc = pDeviceHandler->OpenFile (lpFileName, /* call the device handler */
847 &TabWin32Handles[iIndexNew].hmHandleData,
848 pOFStruct,
849 fuMode);
850
851#ifdef DEBUG_LOCAL
852 dprintf(("KERNEL32/HandleManager:CheckPoint3: %s lpHandlerData=%08xh rc=%08xh\n",
853 lpFileName,
854 &TabWin32Handles[iIndexNew].hmHandleData.lpHandlerData,
855 rc));
856#endif
857
858 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
859 {
860 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
861 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
862 return (INVALID_HANDLE_VALUE); /* signal error */
863 }
864
865#ifdef DEBUG_LOCAL
866 dprintf(("KERNEL32/HandleManager: OpenFile(%s)=%08xh\n",
867 lpFileName,
868 hResult));
869#endif
870
871 return iIndexNew; /* return valid handle */
872}
873
874
875
876/*****************************************************************************
877 * Name : HANDLE HMCloseFile
878 * Purpose : Wrapper for the CloseHandle() API
879 * Parameters:
880 * Variables :
881 * Result :
882 * Remark :
883 * Status :
884 *
885 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
886 *****************************************************************************/
887
888BOOL HMCloseHandle(HANDLE hObject)
889{
890 int iIndex; /* index into the handle table */
891 BOOL fResult; /* result from the device handler's CloseHandle() */
892 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
893
894 /* validate handle */
895 iIndex = _HMHandleQuery(hObject); /* get the index */
896 if (-1 == iIndex) /* error ? */
897 {
898 //@@@PH it may occur someone closes e.g. a semaphore handle
899 // which is not registered through the HandleManager yet.
900 // so we try to pass on to Open32 instead.
901 dprintf(("KERNEL32: HandleManager:HMCloseHandle(%08xh) passed on to Open32.\n",
902 hObject));
903
904 fResult = O32_CloseHandle(hObject);
905 return (fResult);
906
907 //SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
908 //return (FALSE); /* signal failure */
909 }
910
911 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
912 //SvL: Check if pDeviceHandler is set
913 if (pHMHandle->pDeviceHandler) {
914 fResult = pHMHandle->pDeviceHandler->CloseHandle(&pHMHandle->hmHandleData);
915 }
916 else {
917 dprintf(("HMCloseHAndle(%08xh): pDeviceHandler not set", hObject));
918 fResult = TRUE;
919 }
920
921 if (fResult == TRUE) /* remove handle if close succeeded */
922 pHMHandle->hmHandleData.hHMHandle = 0; /* mark handle as free */
923
924 return (fResult); /* deliver return code */
925}
926
927
928/*****************************************************************************
929 * Name : HANDLE HMReadFile
930 * Purpose : Wrapper for the ReadHandle() API
931 * Parameters:
932 * Variables :
933 * Result :
934 * Remark :
935 * Status :
936 *
937 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
938 *****************************************************************************/
939
940BOOL HMReadFile(HANDLE hFile,
941 LPVOID lpBuffer,
942 DWORD nNumberOfBytesToRead,
943 LPDWORD lpNumberOfBytesRead,
944 LPOVERLAPPED lpOverlapped)
945{
946 int iIndex; /* index into the handle table */
947 BOOL fResult; /* result from the device handler's CloseHandle() */
948 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
949
950 /* validate handle */
951 iIndex = _HMHandleQuery(hFile); /* get the index */
952 if (-1 == iIndex) /* error ? */
953 {
954 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
955 return (FALSE); /* signal failure */
956 }
957
958 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
959 fResult = pHMHandle->pDeviceHandler->ReadFile(&pHMHandle->hmHandleData,
960 lpBuffer,
961 nNumberOfBytesToRead,
962 lpNumberOfBytesRead,
963 lpOverlapped);
964
965 return (fResult); /* deliver return code */
966}
967
968
969/*****************************************************************************
970 * Name : HANDLE HMWriteFile
971 * Purpose : Wrapper for the WriteHandle() API
972 * Parameters:
973 * Variables :
974 * Result :
975 * Remark :
976 * Status :
977 *
978 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
979 *****************************************************************************/
980
981BOOL HMWriteFile(HANDLE hFile,
982 LPCVOID lpBuffer,
983 DWORD nNumberOfBytesToWrite,
984 LPDWORD lpNumberOfBytesWritten,
985 LPOVERLAPPED lpOverlapped)
986{
987 int iIndex; /* index into the handle table */
988 BOOL fResult; /* result from the device handler's CloseHandle() */
989 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
990
991 /* validate handle */
992 iIndex = _HMHandleQuery(hFile); /* get the index */
993 if (-1 == iIndex) /* error ? */
994 {
995 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
996 return (FALSE); /* signal failure */
997 }
998
999 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1000 fResult = pHMHandle->pDeviceHandler->WriteFile(&pHMHandle->hmHandleData,
1001 lpBuffer,
1002 nNumberOfBytesToWrite,
1003 lpNumberOfBytesWritten,
1004 lpOverlapped);
1005
1006 return (fResult); /* deliver return code */
1007}
1008
1009
1010/*****************************************************************************
1011 * Name : HANDLE HMGetFileType
1012 * Purpose : Wrapper for the GetFileType() API
1013 * Parameters:
1014 * Variables :
1015 * Result :
1016 * Remark :
1017 * Status :
1018 *
1019 * Author : Patrick Haller [Wed, 1998/02/12 13:37]
1020 *****************************************************************************/
1021
1022DWORD HMGetFileType(HANDLE hFile)
1023{
1024 int iIndex; /* index into the handle table */
1025 DWORD dwResult; /* result from the device handler's API */
1026 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1027
1028 /* validate handle */
1029 iIndex = _HMHandleQuery(hFile); /* get the index */
1030 if (-1 == iIndex) /* error ? */
1031 {
1032 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1033 return (INVALID_HANDLE_ERROR); /* signal failure */
1034 }
1035
1036 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1037 dwResult = pHMHandle->pDeviceHandler->GetFileType(&pHMHandle->hmHandleData);
1038
1039 return (dwResult); /* deliver return code */
1040}
1041
1042
1043/*****************************************************************************
1044 * Name : HMDeviceHandler::_DeviceReuqest
1045 * Purpose : entry method for special request functions
1046 * Parameters: ULONG ulRequestCode
1047 * various parameters as required
1048 * Variables :
1049 * Result :
1050 * Remark : the standard behaviour is to return an error code for non-
1051 * existant request codes
1052 * Status :
1053 *
1054 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
1055 *****************************************************************************/
1056
1057DWORD HMDeviceRequest (HANDLE hFile,
1058 ULONG ulRequestCode,
1059 ULONG arg1,
1060 ULONG arg2,
1061 ULONG arg3,
1062 ULONG arg4)
1063{
1064 int iIndex; /* index into the handle table */
1065 DWORD dwResult; /* result from the device handler's API */
1066 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1067
1068 /* validate handle */
1069 iIndex = _HMHandleQuery(hFile); /* get the index */
1070 if (-1 == iIndex) /* error ? */
1071 {
1072 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1073 return (INVALID_HANDLE_ERROR); /* signal failure */
1074 }
1075
1076 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1077 dwResult = pHMHandle->pDeviceHandler->_DeviceRequest(&pHMHandle->hmHandleData,
1078 ulRequestCode,
1079 arg1,
1080 arg2,
1081 arg3,
1082 arg4);
1083
1084 return (dwResult); /* deliver return code */
1085}
1086
1087
1088/*****************************************************************************
1089 * Name : HMDeviceHandler::GetFileInformationByHandle
1090 * Purpose : router function for GetFileInformationByHandle
1091 * Parameters:
1092 * Variables :
1093 * Result :
1094 * Remark :
1095 * Status :
1096 *
1097 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1098 *****************************************************************************/
1099
1100BOOL HMGetFileInformationByHandle (HANDLE hFile,
1101 BY_HANDLE_FILE_INFORMATION *pHFI)
1102{
1103 int iIndex; /* index into the handle table */
1104 DWORD dwResult; /* result from the device handler's API */
1105 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1106
1107 /* validate handle */
1108 iIndex = _HMHandleQuery(hFile); /* get the index */
1109 if (-1 == iIndex) /* error ? */
1110 {
1111 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1112 return (INVALID_HANDLE_ERROR); /* signal failure */
1113 }
1114
1115 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1116 dwResult = pHMHandle->pDeviceHandler->GetFileInformationByHandle(&pHMHandle->hmHandleData,
1117 pHFI);
1118
1119 return (dwResult); /* deliver return code */
1120}
1121
1122
1123/*****************************************************************************
1124 * Name : HMDeviceHandler::SetEndOfFile
1125 * Purpose : router function for SetEndOfFile
1126 * Parameters:
1127 * Variables :
1128 * Result :
1129 * Remark :
1130 * Status :
1131 *
1132 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1133 *****************************************************************************/
1134
1135BOOL HMSetEndOfFile (HANDLE hFile)
1136{
1137 int iIndex; /* index into the handle table */
1138 BOOL bResult; /* result from the device handler's API */
1139 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1140
1141 /* validate handle */
1142 iIndex = _HMHandleQuery(hFile); /* get the index */
1143 if (-1 == iIndex) /* error ? */
1144 {
1145 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1146 return (INVALID_HANDLE_ERROR); /* signal failure */
1147 }
1148
1149 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1150 bResult = pHMHandle->pDeviceHandler->SetEndOfFile(&pHMHandle->hmHandleData);
1151
1152 return (bResult); /* deliver return code */
1153}
1154
1155
1156/*****************************************************************************
1157 * Name : HMDeviceHandler::SetFileTime
1158 * Purpose : router function for SetFileTime
1159 * Parameters:
1160 * Variables :
1161 * Result :
1162 * Remark :
1163 * Status :
1164 *
1165 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1166 *****************************************************************************/
1167
1168BOOL HMSetFileTime (HANDLE hFile,
1169 const FILETIME *pFT1,
1170 const FILETIME *pFT2,
1171 const FILETIME *pFT3)
1172{
1173 int iIndex; /* index into the handle table */
1174 BOOL bResult; /* result from the device handler's API */
1175 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1176
1177 /* validate handle */
1178 iIndex = _HMHandleQuery(hFile); /* get the index */
1179 if (-1 == iIndex) /* error ? */
1180 {
1181 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1182 return (INVALID_HANDLE_ERROR); /* signal failure */
1183 }
1184
1185 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1186 bResult = pHMHandle->pDeviceHandler->SetFileTime(&pHMHandle->hmHandleData,
1187 (LPFILETIME)pFT1,
1188 (LPFILETIME)pFT2,
1189 (LPFILETIME)pFT3);
1190
1191 return (bResult); /* deliver return code */
1192}
1193
1194
1195/*****************************************************************************
1196 * Name : HMDeviceHandler::GetFileSize
1197 * Purpose : router function for GetFileSize
1198 * Parameters:
1199 * Variables :
1200 * Result :
1201 * Remark :
1202 * Status :
1203 *
1204 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1205 *****************************************************************************/
1206
1207DWORD HMGetFileSize (HANDLE hFile,
1208 PDWORD pSize)
1209{
1210 int iIndex; /* index into the handle table */
1211 DWORD dwResult; /* result from the device handler's API */
1212 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1213
1214 /* validate handle */
1215 iIndex = _HMHandleQuery(hFile); /* get the index */
1216 if (-1 == iIndex) /* error ? */
1217 {
1218 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1219 return (INVALID_HANDLE_ERROR); /* signal failure */
1220 }
1221
1222 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1223 dwResult = pHMHandle->pDeviceHandler->GetFileSize(&pHMHandle->hmHandleData,
1224 pSize);
1225
1226 return (dwResult); /* deliver return code */
1227}
1228
1229
1230/*****************************************************************************
1231 * Name : HMDeviceHandler::SetFilePointer
1232 * Purpose : router function for SetFilePointer
1233 * Parameters:
1234 * Variables :
1235 * Result :
1236 * Remark :
1237 * Status :
1238 *
1239 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1240 *****************************************************************************/
1241
1242DWORD HMSetFilePointer (HANDLE hFile,
1243 LONG lDistanceToMove,
1244 PLONG lpDistanceToMoveHigh,
1245 DWORD dwMoveMethod)
1246{
1247 int iIndex; /* index into the handle table */
1248 DWORD dwResult; /* result from the device handler's API */
1249 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1250
1251 /* validate handle */
1252 iIndex = _HMHandleQuery(hFile); /* get the index */
1253 if (-1 == iIndex) /* error ? */
1254 {
1255 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1256 return (INVALID_HANDLE_ERROR); /* signal failure */
1257 }
1258
1259 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1260 dwResult = pHMHandle->pDeviceHandler->SetFilePointer(&pHMHandle->hmHandleData,
1261 lDistanceToMove,
1262 lpDistanceToMoveHigh,
1263 dwMoveMethod);
1264
1265 return (dwResult); /* deliver return code */
1266}
1267
1268
1269/*****************************************************************************
1270 * Name : HMDeviceHandler::LockFile
1271 * Purpose : router function for LockFile
1272 * Parameters:
1273 * Variables :
1274 * Result :
1275 * Remark :
1276 * Status :
1277 *
1278 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1279 *****************************************************************************/
1280
1281BOOL HMLockFile (HFILE hFile,
1282 DWORD arg2,
1283 DWORD arg3,
1284 DWORD arg4,
1285 DWORD arg5)
1286{
1287 int iIndex; /* index into the handle table */
1288 DWORD dwResult; /* result from the device handler's API */
1289 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1290
1291 /* validate handle */
1292 iIndex = _HMHandleQuery(hFile); /* get the index */
1293 if (-1 == iIndex) /* error ? */
1294 {
1295 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1296 return (INVALID_HANDLE_ERROR); /* signal failure */
1297 }
1298
1299 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1300 dwResult = pHMHandle->pDeviceHandler->LockFile(&pHMHandle->hmHandleData,
1301 arg2,
1302 arg3,
1303 arg4,
1304 arg5);
1305
1306 return (dwResult); /* deliver return code */
1307}
1308
1309
1310/*****************************************************************************
1311 * Name : HMDeviceHandler::LockFileEx
1312 * Purpose : router function for LockFileEx
1313 * Parameters:
1314 * Variables :
1315 * Result :
1316 * Remark :
1317 * Status :
1318 *
1319 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1320 *****************************************************************************/
1321
1322BOOL HMLockFileEx(HANDLE hFile,
1323 DWORD dwFlags,
1324 DWORD dwReserved,
1325 DWORD nNumberOfBytesToLockLow,
1326 DWORD nNumberOfBytesToLockHigh,
1327 LPOVERLAPPED lpOverlapped)
1328{
1329 int iIndex; /* index into the handle table */
1330 DWORD dwResult; /* result from the device handler's API */
1331 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1332
1333 /* validate handle */
1334 iIndex = _HMHandleQuery(hFile); /* get the index */
1335 if (-1 == iIndex) /* error ? */
1336 {
1337 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1338 return (INVALID_HANDLE_ERROR); /* signal failure */
1339 }
1340
1341 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1342 dwResult = pHMHandle->pDeviceHandler->LockFileEx(&pHMHandle->hmHandleData,
1343 dwFlags,
1344 dwReserved,
1345 nNumberOfBytesToLockLow,
1346 nNumberOfBytesToLockHigh,
1347 lpOverlapped);
1348
1349 return (dwResult); /* deliver return code */
1350}
1351
1352
1353
1354/*****************************************************************************
1355 * Name : HMDeviceHandler::UnlockFile
1356 * Purpose : router function for UnlockFile
1357 * Parameters:
1358 * Variables :
1359 * Result :
1360 * Remark :
1361 * Status :
1362 *
1363 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1364 *****************************************************************************/
1365
1366BOOL HMUnlockFile (HFILE hFile,
1367 DWORD arg2,
1368 DWORD arg3,
1369 DWORD arg4,
1370 DWORD arg5)
1371{
1372 int iIndex; /* index into the handle table */
1373 DWORD dwResult; /* result from the device handler's API */
1374 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1375
1376 /* validate handle */
1377 iIndex = _HMHandleQuery(hFile); /* get the index */
1378 if (-1 == iIndex) /* error ? */
1379 {
1380 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1381 return (INVALID_HANDLE_ERROR); /* signal failure */
1382 }
1383
1384 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1385 dwResult = pHMHandle->pDeviceHandler->UnlockFile(&pHMHandle->hmHandleData,
1386 arg2,
1387 arg3,
1388 arg4,
1389 arg5);
1390
1391 return (dwResult); /* deliver return code */
1392}
1393
1394
1395/*****************************************************************************
1396 * Name : HMDeviceHandler::UnlockFileEx
1397 * Purpose : router function for UnlockFileEx
1398 * Parameters:
1399 * Variables :
1400 * Result :
1401 * Remark :
1402 * Status :
1403 *
1404 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1405 *****************************************************************************/
1406
1407BOOL HMUnlockFileEx(HANDLE hFile,
1408 DWORD dwFlags,
1409 DWORD dwReserved,
1410 DWORD nNumberOfBytesToLockLow,
1411 DWORD nNumberOfBytesToLockHigh,
1412 LPOVERLAPPED lpOverlapped)
1413{
1414 int iIndex; /* index into the handle table */
1415 DWORD dwResult; /* result from the device handler's API */
1416 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1417
1418 /* validate handle */
1419 iIndex = _HMHandleQuery(hFile); /* get the index */
1420 if (-1 == iIndex) /* error ? */
1421 {
1422 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1423 return (INVALID_HANDLE_ERROR); /* signal failure */
1424 }
1425
1426 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1427 dwResult = pHMHandle->pDeviceHandler->UnlockFileEx(&pHMHandle->hmHandleData,
1428 dwFlags,
1429 dwReserved,
1430 nNumberOfBytesToLockLow,
1431 nNumberOfBytesToLockHigh,
1432 lpOverlapped);
1433
1434 return (dwResult); /* deliver return code */
1435}
1436
1437
1438/*****************************************************************************
1439 * Name : HMDeviceHandler::WaitForSingleObject
1440 * Purpose : router function for WaitForSingleObject
1441 * Parameters:
1442 * Variables :
1443 * Result :
1444 * Remark :
1445 * Status :
1446 *
1447 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1448 *****************************************************************************/
1449
1450DWORD HMWaitForSingleObject(HANDLE hObject,
1451 DWORD dwTimeout)
1452{
1453 int iIndex; /* index into the handle table */
1454 DWORD dwResult; /* result from the device handler's API */
1455 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1456
1457 /* validate handle */
1458 iIndex = _HMHandleQuery(hObject); /* get the index */
1459 if (-1 == iIndex) /* error ? */
1460 {
1461 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1462 return (INVALID_HANDLE_ERROR); /* signal failure */
1463 }
1464
1465 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1466 dwResult = pHMHandle->pDeviceHandler->WaitForSingleObject(&pHMHandle->hmHandleData,
1467 dwTimeout);
1468
1469 return (dwResult); /* deliver return code */
1470}
1471
1472
1473/*****************************************************************************
1474 * Name : HMDeviceHandler::WaitForSingleObjectEx
1475 * Purpose : router function for WaitForSingleObjectEx
1476 * Parameters:
1477 * Variables :
1478 * Result :
1479 * Remark :
1480 * Status :
1481 *
1482 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1483 *****************************************************************************/
1484
1485DWORD HMWaitForSingleObjectEx(HANDLE hObject,
1486 DWORD dwTimeout,
1487 BOOL fAlertable)
1488{
1489 int iIndex; /* index into the handle table */
1490 DWORD dwResult; /* result from the device handler's API */
1491 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1492
1493 /* validate handle */
1494 iIndex = _HMHandleQuery(hObject); /* get the index */
1495 if (-1 == iIndex) /* error ? */
1496 {
1497 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1498 return (INVALID_HANDLE_ERROR); /* signal failure */
1499 }
1500
1501 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1502 dwResult = pHMHandle->pDeviceHandler->WaitForSingleObjectEx(&pHMHandle->hmHandleData,
1503 dwTimeout,
1504 fAlertable);
1505
1506 return (dwResult); /* deliver return code */
1507}
1508
1509
1510/*****************************************************************************
1511 * Name : HMDeviceHandler::FlushFileBuffers
1512 * Purpose : router function for FlushFileBuffers
1513 * Parameters:
1514 * Variables :
1515 * Result :
1516 * Remark :
1517 * Status :
1518 *
1519 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1520 *****************************************************************************/
1521
1522BOOL HMFlushFileBuffers(HANDLE hFile)
1523{
1524 int iIndex; /* index into the handle table */
1525 DWORD dwResult; /* result from the device handler's API */
1526 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1527
1528 /* validate handle */
1529 iIndex = _HMHandleQuery(hFile); /* get the index */
1530 if (-1 == iIndex) /* error ? */
1531 {
1532 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1533 return (INVALID_HANDLE_ERROR); /* signal failure */
1534 }
1535
1536 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1537 dwResult = pHMHandle->pDeviceHandler->FlushFileBuffers(&pHMHandle->hmHandleData);
1538
1539 return (dwResult); /* deliver return code */
1540}
1541
1542
1543/*****************************************************************************
1544 * Name : HMDeviceHandler::GetOverlappedResult
1545 * Purpose : router function for GetOverlappedResult
1546 * Parameters:
1547 * Variables :
1548 * Result :
1549 * Remark :
1550 * Status :
1551 *
1552 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1553 *****************************************************************************/
1554
1555BOOL HMGetOverlappedResult(HANDLE hObject,
1556 LPOVERLAPPED lpOverlapped,
1557 LPDWORD arg3,
1558 BOOL arg4)
1559{
1560 int iIndex; /* index into the handle table */
1561 DWORD dwResult; /* result from the device handler's API */
1562 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1563
1564 /* validate handle */
1565 iIndex = _HMHandleQuery(hObject); /* get the index */
1566 if (-1 == iIndex) /* error ? */
1567 {
1568 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1569 return (INVALID_HANDLE_ERROR); /* signal failure */
1570 }
1571
1572 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1573 dwResult = pHMHandle->pDeviceHandler->GetOverlappedResult(&pHMHandle->hmHandleData,
1574 lpOverlapped,
1575 arg3,
1576 arg4);
1577
1578 return (dwResult); /* deliver return code */
1579}
1580
1581
1582/*****************************************************************************
1583 * Name : HMReleaseMutex
1584 * Purpose : router function for ReleaseMutex
1585 * Parameters:
1586 * Variables :
1587 * Result :
1588 * Remark :
1589 * Status :
1590 *
1591 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1592 *****************************************************************************/
1593
1594BOOL HMReleaseMutex(HANDLE hObject)
1595{
1596 int iIndex; /* index into the handle table */
1597 DWORD dwResult; /* result from the device handler's API */
1598 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1599
1600 /* validate handle */
1601 iIndex = _HMHandleQuery(hObject); /* get the index */
1602 if (-1 == iIndex) /* error ? */
1603 {
1604 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1605 return (INVALID_HANDLE_ERROR); /* signal failure */
1606 }
1607
1608 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1609 dwResult = pHMHandle->pDeviceHandler->ReleaseMutex(&pHMHandle->hmHandleData);
1610
1611 return (dwResult); /* deliver return code */
1612}
1613
1614
1615/*****************************************************************************
1616 * Name : HMSetEvent
1617 * Purpose : router function for SetEvent
1618 * Parameters:
1619 * Variables :
1620 * Result :
1621 * Remark :
1622 * Status :
1623 *
1624 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1625 *****************************************************************************/
1626
1627BOOL HMSetEvent(HANDLE hEvent)
1628{
1629 int iIndex; /* index into the handle table */
1630 DWORD dwResult; /* result from the device handler's API */
1631 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1632
1633 /* validate handle */
1634 iIndex = _HMHandleQuery(hEvent); /* get the index */
1635 if (-1 == iIndex) /* error ? */
1636 {
1637 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1638 return (INVALID_HANDLE_ERROR); /* signal failure */
1639 }
1640
1641 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1642 dwResult = pHMHandle->pDeviceHandler->SetEvent(&pHMHandle->hmHandleData);
1643
1644 return (dwResult); /* deliver return code */
1645}
1646
1647
1648/*****************************************************************************
1649 * Name : HMPulseEvent
1650 * Purpose : router function for PulseEvent
1651 * Parameters:
1652 * Variables :
1653 * Result :
1654 * Remark :
1655 * Status :
1656 *
1657 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1658 *****************************************************************************/
1659
1660BOOL HMPulseEvent(HANDLE hEvent)
1661{
1662 int iIndex; /* index into the handle table */
1663 DWORD dwResult; /* result from the device handler's API */
1664 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1665
1666 /* validate handle */
1667 iIndex = _HMHandleQuery(hEvent); /* get the index */
1668 if (-1 == iIndex) /* error ? */
1669 {
1670 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1671 return (INVALID_HANDLE_ERROR); /* signal failure */
1672 }
1673
1674 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1675 dwResult = pHMHandle->pDeviceHandler->PulseEvent(&pHMHandle->hmHandleData);
1676
1677 return (dwResult); /* deliver return code */
1678}
1679
1680
1681/*****************************************************************************
1682 * Name : HMResetEvent
1683 * Purpose : router function for ResetEvent
1684 * Parameters:
1685 * Variables :
1686 * Result :
1687 * Remark :
1688 * Status :
1689 *
1690 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
1691 *****************************************************************************/
1692
1693BOOL HMResetEvent(HANDLE hEvent)
1694{
1695 int iIndex; /* index into the handle table */
1696 DWORD dwResult; /* result from the device handler's API */
1697 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1698
1699 /* validate handle */
1700 iIndex = _HMHandleQuery(hEvent); /* get the index */
1701 if (-1 == iIndex) /* error ? */
1702 {
1703 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1704 return (INVALID_HANDLE_ERROR); /* signal failure */
1705 }
1706
1707 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1708 dwResult = pHMHandle->pDeviceHandler->ResetEvent(&pHMHandle->hmHandleData);
1709
1710 return (dwResult); /* deliver return code */
1711}
1712
1713
1714/*****************************************************************************
1715 * Name : HANDLE HMCreateEvent
1716 * Purpose : Wrapper for the CreateEvent() API
1717 * Parameters:
1718 * Variables :
1719 * Result :
1720 * Remark :
1721 * Status :
1722 *
1723 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
1724 *****************************************************************************/
1725
1726HANDLE HMCreateEvent(LPSECURITY_ATTRIBUTES lpsa,
1727 BOOL bManualReset,
1728 BOOL bInitialState,
1729 LPCTSTR lpName)
1730{
1731 int iIndex; /* index into the handle table */
1732 int iIndexNew; /* index into the handle table */
1733 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
1734 PHMHANDLEDATA pHMHandleData;
1735 DWORD rc; /* API return code */
1736
1737
1738 pDeviceHandler = HMGlobals.pHMEvent; /* device is predefined */
1739
1740 iIndexNew = _HMHandleGetFree(); /* get free handle */
1741 if (-1 == iIndexNew) /* oops, no free handles ! */
1742 {
1743 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1744 return (INVALID_HANDLE_VALUE); /* signal error */
1745 }
1746
1747
1748 /* initialize the complete HMHANDLEDATA structure */
1749 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1750 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1751 pHMHandleData->dwAccess = 0;
1752 pHMHandleData->dwShare = 0;
1753 pHMHandleData->dwCreation = 0;
1754 pHMHandleData->dwFlags = 0;
1755 pHMHandleData->lpHandlerData = NULL;
1756
1757
1758 /* we've got to mark the handle as occupied here, since another device */
1759 /* could be created within the device handler -> deadlock */
1760
1761 /* write appropriate entry into the handle table if open succeeded */
1762 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1763 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1764
1765 /* call the device handler */
1766 rc = pDeviceHandler->CreateEvent(&TabWin32Handles[iIndexNew].hmHandleData,
1767 lpsa,
1768 bManualReset,
1769 bInitialState,
1770 lpName);
1771 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1772 {
1773 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1774 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1775 return (INVALID_HANDLE_VALUE); /* signal error */
1776 }
1777
1778 return iIndexNew; /* return valid handle */
1779}
1780
1781
1782/*****************************************************************************
1783 * Name : HANDLE HMCreateMutex
1784 * Purpose : Wrapper for the CreateMutex() API
1785 * Parameters:
1786 * Variables :
1787 * Result :
1788 * Remark :
1789 * Status :
1790 *
1791 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
1792 *****************************************************************************/
1793
1794HANDLE HMCreateMutex(LPSECURITY_ATTRIBUTES lpsa,
1795 BOOL bInitialOwner,
1796 LPCTSTR lpName)
1797{
1798 int iIndex; /* index into the handle table */
1799 int iIndexNew; /* index into the handle table */
1800 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
1801 PHMHANDLEDATA pHMHandleData;
1802 DWORD rc; /* API return code */
1803
1804
1805 pDeviceHandler = HMGlobals.pHMMutex; /* device is predefined */
1806
1807 iIndexNew = _HMHandleGetFree(); /* get free handle */
1808 if (-1 == iIndexNew) /* oops, no free handles ! */
1809 {
1810 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1811 return (INVALID_HANDLE_VALUE); /* signal error */
1812 }
1813
1814
1815 /* initialize the complete HMHANDLEDATA structure */
1816 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1817 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1818 pHMHandleData->dwAccess = 0;
1819 pHMHandleData->dwShare = 0;
1820 pHMHandleData->dwCreation = 0;
1821 pHMHandleData->dwFlags = 0;
1822 pHMHandleData->lpHandlerData = NULL;
1823
1824
1825 /* we've got to mark the handle as occupied here, since another device */
1826 /* could be created within the device handler -> deadlock */
1827
1828 /* write appropriate entry into the handle table if open succeeded */
1829 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1830 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1831
1832 /* call the device handler */
1833 rc = pDeviceHandler->CreateMutex(&TabWin32Handles[iIndexNew].hmHandleData,
1834 lpsa,
1835 bInitialOwner,
1836 lpName);
1837 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1838 {
1839 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1840 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1841 return (INVALID_HANDLE_VALUE); /* signal error */
1842 }
1843
1844 return iIndexNew; /* return valid handle */
1845}
1846
1847
1848/*****************************************************************************
1849 * Name : HANDLE HMOpenEvent
1850 * Purpose : Wrapper for the OpenEvent() API
1851 * Parameters:
1852 * Variables :
1853 * Result :
1854 * Remark :
1855 * Status :
1856 *
1857 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
1858 *****************************************************************************/
1859
1860HANDLE HMOpenEvent(DWORD fdwAccess,
1861 BOOL fInherit,
1862 LPCTSTR lpName)
1863{
1864 int iIndex; /* index into the handle table */
1865 int iIndexNew; /* index into the handle table */
1866 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
1867 PHMHANDLEDATA pHMHandleData;
1868 DWORD rc; /* API return code */
1869
1870
1871 pDeviceHandler = HMGlobals.pHMEvent; /* device is predefined */
1872
1873 iIndexNew = _HMHandleGetFree(); /* get free handle */
1874 if (-1 == iIndexNew) /* oops, no free handles ! */
1875 {
1876 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1877 return (INVALID_HANDLE_VALUE); /* signal error */
1878 }
1879
1880
1881 /* initialize the complete HMHANDLEDATA structure */
1882 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1883 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1884 pHMHandleData->dwAccess = fdwAccess;
1885 pHMHandleData->dwShare = 0;
1886 pHMHandleData->dwCreation = 0;
1887 pHMHandleData->dwFlags = 0;
1888 pHMHandleData->lpHandlerData = NULL;
1889
1890
1891 /* we've got to mark the handle as occupied here, since another device */
1892 /* could be created within the device handler -> deadlock */
1893
1894 /* write appropriate entry into the handle table if open succeeded */
1895 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1896 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1897
1898 /* call the device handler */
1899 rc = pDeviceHandler->OpenEvent(&TabWin32Handles[iIndexNew].hmHandleData,
1900 fInherit,
1901 lpName);
1902 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1903 {
1904 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1905 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1906 return (INVALID_HANDLE_VALUE); /* signal error */
1907 }
1908
1909 return iIndexNew; /* return valid handle */
1910}
1911
1912
1913/*****************************************************************************
1914 * Name : HANDLE HMOpenMutex
1915 * Purpose : Wrapper for the OpenMutex() API
1916 * Parameters:
1917 * Variables :
1918 * Result :
1919 * Remark :
1920 * Status :
1921 *
1922 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
1923 *****************************************************************************/
1924
1925HANDLE HMOpenMutex(DWORD fdwAccess,
1926 BOOL fInherit,
1927 LPCTSTR lpName)
1928{
1929 int iIndex; /* index into the handle table */
1930 int iIndexNew; /* index into the handle table */
1931 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
1932 PHMHANDLEDATA pHMHandleData;
1933 DWORD rc; /* API return code */
1934
1935
1936 pDeviceHandler = HMGlobals.pHMMutex; /* device is predefined */
1937
1938 iIndexNew = _HMHandleGetFree(); /* get free handle */
1939 if (-1 == iIndexNew) /* oops, no free handles ! */
1940 {
1941 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1942 return (INVALID_HANDLE_VALUE); /* signal error */
1943 }
1944
1945
1946 /* initialize the complete HMHANDLEDATA structure */
1947 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1948 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1949 pHMHandleData->dwAccess = fdwAccess;
1950 pHMHandleData->dwShare = 0;
1951 pHMHandleData->dwCreation = 0;
1952 pHMHandleData->dwFlags = 0;
1953 pHMHandleData->lpHandlerData = NULL;
1954
1955
1956 /* we've got to mark the handle as occupied here, since another device */
1957 /* could be created within the device handler -> deadlock */
1958
1959 /* write appropriate entry into the handle table if open succeeded */
1960 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1961 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1962
1963 /* call the device handler */
1964 rc = pDeviceHandler->OpenMutex(&TabWin32Handles[iIndexNew].hmHandleData,
1965 fInherit,
1966 lpName);
1967 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1968 {
1969 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1970 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1971 return (INVALID_HANDLE_VALUE); /* signal error */
1972 }
1973
1974 return iIndexNew; /* return valid handle */
1975}
1976
1977
1978/*****************************************************************************
1979 * Name : HANDLE HMCreateSemaphore
1980 * Purpose : Wrapper for the CreateSemaphore() API
1981 * Parameters:
1982 * Variables :
1983 * Result :
1984 * Remark :
1985 * Status :
1986 *
1987 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
1988 *****************************************************************************/
1989
1990HANDLE HMCreateSemaphore(LPSECURITY_ATTRIBUTES lpsa,
1991 LONG lInitialCount,
1992 LONG lMaximumCount,
1993 LPCTSTR lpName)
1994{
1995 int iIndex; /* index into the handle table */
1996 int iIndexNew; /* index into the handle table */
1997 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
1998 PHMHANDLEDATA pHMHandleData;
1999 DWORD rc; /* API return code */
2000
2001
2002 pDeviceHandler = HMGlobals.pHMEvent; /* device is predefined */
2003
2004 iIndexNew = _HMHandleGetFree(); /* get free handle */
2005 if (-1 == iIndexNew) /* oops, no free handles ! */
2006 {
2007 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
2008 return (INVALID_HANDLE_VALUE); /* signal error */
2009 }
2010
2011
2012 /* initialize the complete HMHANDLEDATA structure */
2013 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
2014 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
2015 pHMHandleData->dwAccess = 0;
2016 pHMHandleData->dwShare = 0;
2017 pHMHandleData->dwCreation = 0;
2018 pHMHandleData->dwFlags = 0;
2019 pHMHandleData->lpHandlerData = NULL;
2020
2021
2022 /* we've got to mark the handle as occupied here, since another device */
2023 /* could be created within the device handler -> deadlock */
2024
2025 /* write appropriate entry into the handle table if open succeeded */
2026 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
2027 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
2028
2029 /* call the device handler */
2030 rc = pDeviceHandler->CreateSemaphore(&TabWin32Handles[iIndexNew].hmHandleData,
2031 lpsa,
2032 lInitialCount,
2033 lMaximumCount,
2034 lpName);
2035 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
2036 {
2037 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
2038 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
2039 return (INVALID_HANDLE_VALUE); /* signal error */
2040 }
2041
2042 return iIndexNew; /* return valid handle */
2043}
2044
2045
2046/*****************************************************************************
2047 * Name : HANDLE HMOpenSemaphore
2048 * Purpose : Wrapper for the OpenSemaphore() API
2049 * Parameters:
2050 * Variables :
2051 * Result :
2052 * Remark :
2053 * Status :
2054 *
2055 * Author : Patrick Haller [Wed, 1998/02/11 20:44]
2056 *****************************************************************************/
2057
2058HANDLE HMOpenSemaphore(DWORD fdwAccess,
2059 BOOL fInherit,
2060 LPCTSTR lpName)
2061{
2062 int iIndex; /* index into the handle table */
2063 int iIndexNew; /* index into the handle table */
2064 HMDeviceHandler *pDeviceHandler; /* device handler for this handle */
2065 PHMHANDLEDATA pHMHandleData;
2066 DWORD rc; /* API return code */
2067
2068
2069 pDeviceHandler = HMGlobals.pHMMutex; /* device is predefined */
2070
2071 iIndexNew = _HMHandleGetFree(); /* get free handle */
2072 if (-1 == iIndexNew) /* oops, no free handles ! */
2073 {
2074 SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
2075 return (INVALID_HANDLE_VALUE); /* signal error */
2076 }
2077
2078
2079 /* initialize the complete HMHANDLEDATA structure */
2080 pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
2081 pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
2082 pHMHandleData->dwAccess = fdwAccess;
2083 pHMHandleData->dwShare = 0;
2084 pHMHandleData->dwCreation = 0;
2085 pHMHandleData->dwFlags = 0;
2086 pHMHandleData->lpHandlerData = NULL;
2087
2088
2089 /* we've got to mark the handle as occupied here, since another device */
2090 /* could be created within the device handler -> deadlock */
2091
2092 /* write appropriate entry into the handle table if open succeeded */
2093 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
2094 TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
2095
2096 /* call the device handler */
2097 rc = pDeviceHandler->OpenSemaphore(&TabWin32Handles[iIndexNew].hmHandleData,
2098 fInherit,
2099 lpName);
2100 if (rc != NO_ERROR) /* oops, creation failed within the device handler */
2101 {
2102 TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
2103 SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
2104 return (INVALID_HANDLE_VALUE); /* signal error */
2105 }
2106
2107 return iIndexNew; /* return valid handle */
2108}
2109
2110
2111/*****************************************************************************
2112 * Name : HMReleaseSemaphore
2113 * Purpose : router function for ReleaseSemaphore
2114 * Parameters:
2115 * Variables :
2116 * Result :
2117 * Remark :
2118 * Status :
2119 *
2120 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
2121 *****************************************************************************/
2122
2123BOOL HMReleaseSemaphore(HANDLE hEvent,
2124 LONG cReleaseCount,
2125 LPLONG lpPreviousCount)
2126{
2127 int iIndex; /* index into the handle table */
2128 DWORD dwResult; /* result from the device handler's API */
2129 PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
2130
2131 /* validate handle */
2132 iIndex = _HMHandleQuery(hEvent); /* get the index */
2133 if (-1 == iIndex) /* error ? */
2134 {
2135 SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
2136 return (INVALID_HANDLE_ERROR); /* signal failure */
2137 }
2138
2139 pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
2140 dwResult = pHMHandle->pDeviceHandler->ReleaseSemaphore(&pHMHandle->hmHandleData,
2141 cReleaseCount,
2142 lpPreviousCount);
2143
2144 return (dwResult); /* deliver return code */
2145}
2146
2147
2148/*****************************************************************************
2149 * Name : HMWaitForMultipleObjects
2150 * Purpose : router function for WaitForMultipleObjects
2151 * Parameters:
2152 * Variables :
2153 * Result :
2154 * Remark :
2155 * Status :
2156 *
2157 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
2158 *****************************************************************************/
2159
2160DWORD HMWaitForMultipleObjects (DWORD cObjects,
2161 PHANDLE lphObjects,
2162 BOOL fWaitAll,
2163 DWORD dwTimeout)
2164{
2165 ULONG ulIndex;
2166 PHANDLE pArrayOfHandles;
2167 PHANDLE pLoop1 = lphObjects;
2168 PHANDLE pLoop2;
2169 DWORD rc;
2170
2171 // allocate array for handle table
2172 pArrayOfHandles = (PHANDLE)malloc(cObjects * sizeof(HANDLE));
2173 if (pArrayOfHandles == NULL)
2174 {
2175 O32_SetLastError(ERROR_NOT_ENOUGH_MEMORY);
2176 return WAIT_FAILED;
2177 }
2178 else
2179 pLoop2 = pArrayOfHandles;
2180
2181 // convert array to odin handles
2182 for (ulIndex = 0;
2183
2184 ulIndex < cObjects;
2185
2186 ulIndex++,
2187 pLoop1++,
2188 pLoop2++)
2189 {
2190 rc = HMHandleTranslateToOS2 (*pLoop1, // translate handle
2191 pLoop2);
2192
2193 if (rc != NO_ERROR)
2194 {
2195 free (pArrayOfHandles); // free memory
2196 O32_SetLastError(ERROR_INVALID_HANDLE);
2197 return (WAIT_FAILED);
2198 }
2199 }
2200
2201 // OK, now forward to Open32.
2202 // @@@PH: Note this will fail on handles that do NOT belong to Open32
2203 // but to i.e. the console subsystem!
2204 rc = O32_WaitForMultipleObjects(cObjects,
2205 pArrayOfHandles,
2206 fWaitAll,
2207 dwTimeout);
2208
2209 free(pArrayOfHandles); // free memory
2210 return (rc); // OK, done
2211}
2212
2213
2214/*****************************************************************************
2215 * Name : HMWaitForMultipleObjectsEx
2216 * Purpose : router function for WaitForMultipleObjectsEx
2217 * Parameters:
2218 * Variables :
2219 * Result :
2220 * Remark :
2221 * Status :
2222 *
2223 * Author : Patrick Haller [Wed, 1999/06/17 20:44]
2224 *****************************************************************************/
2225
2226DWORD HMWaitForMultipleObjectsEx (DWORD cObjects,
2227 PHANDLE lphObjects,
2228 BOOL fWaitAll,
2229 DWORD dwTimeout,
2230 BOOL fAlertable)
2231{
2232 // @@@PH: Note: fAlertable is ignored !
2233 return (HMWaitForMultipleObjects(cObjects,
2234 lphObjects,
2235 fWaitAll,
2236 dwTimeout));
2237}
2238
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