Context Navigation

source: trunk/src/kernel32/HandleManager.cpp@ 499

Visit:

Last change on this file since 499 was 461, checked in by phaller, 26 years ago
Fix: fixes and updates for ODINCRT support
File size: 85.1 KB

Line
1	/* $Id: HandleManager.cpp,v 1.8 1999-08-09 22:10:07 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	#include <odincrt.h>
49
50	#include "unicode.h"
51	#include "misc.h"
52
53	#include "HandleManager.H"
54	#include "HMDevice.h"
55	#include "HMOpen32.h"
56	#include "HMEvent.h"
57	#include "HMMutex.h"
58	#include "HMSemaphore.h"
59
60
61	/*****************************************************************************
62	* Defines *
63	*****************************************************************************/
64
65	/* this is the size of our currently static handle table */
66	#define MAX_OS2_HMHANDLES 2048
67
68
69	/*****************************************************************************
70	* Structures *
71	*****************************************************************************/
72
73
74	typedef struct _HMHANDLE
75	{
76	HMDeviceHandler pDeviceHandler; / handler for this pseudo-device */
77	HMHANDLEDATA hmHandleData; /* attributes of the handle */
78	} HMHANDLE, *PHMHANDLE;
79
80
81	typedef struct _HMDEVICE
82	{
83	struct _HMDEVICE pNext; / pointer to next device in chain */
84
85	PSZ pszDeviceName; /* name or alias of the pseudo-device */
86	HMDeviceHandler pDeviceHandler; / handler for this pseudo-device */
87	} HMDEVICE, *PHMDEVICE;
88
89
90	/*****************************************************************************
91	* This pseudo-device logs all device requests to the logfile and returns *
92	* ERROR_INVALID_FUNCTION to virtually all requests -> debugging *
93	*****************************************************************************/
94	class HMDeviceDebugClass : public HMDeviceHandler
95	{
96	public:
97	HMDeviceDebugClass(LPCSTR lpDeviceName) : HMDeviceHandler(lpDeviceName) {}
98	};
99
100
101	/*****************************************************************************
102	* Process Global Structures *
103	*****************************************************************************/
104
105
106	/* the device name is repeated here to enable device alias names */
107	static PHMDEVICE TabWin32Devices = NULL;
108	static HMHANDLE TabWin32Handles[MAX_OS2_HMHANDLES]; /* static handle table */
109
110
111	struct _HMGlobals
112	{
113	HANDLE hStandardIn; /* stdin handle to CONIN$ */
114	HANDLE hStandardOut; /* stdout handle to CONOUT$ */
115	HANDLE hStandardError; /* stderr handle to CONOUT$ */
116
117	BOOL fIsInitialized; /* if HM is initialized already ? */
118	/* this MUST !!! be false initially */
119
120	HMDeviceHandler pHMOpen32; / default handle manager instance */
121	HMDeviceHandler pHMEvent; / static instances of subsystems */
122	HMDeviceHandler *pHMMutex;
123	HMDeviceHandler *pHMSemaphore;
124
125	ULONG ulHandleLast; /* index of last used handle */
126	} HMGlobals;
127
128
129	/*****************************************************************************
130	* Local Prototypes *
131	*****************************************************************************/
132
133	/* get appropriate device handler by the device name */
134	static HMDeviceHandler *_HMDeviceFind(PSZ pszDeviceName);
135
136	/* get next free handle from the handle table */
137	static ULONG _HMHandleGetFree(void);
138
139	/* get handle table entry from handle */
140	static ULONG _HMHandleQuery(HANDLE hHandle);
141
142
143
144	/*****************************************************************************
145	* Name : static HMDeviceHandler * _HMDeviceFind
146	* Purpose : obtain appropriate device handler from the table by searching
147	* for a device name or alias
148	* Parameters: PSZ pszDeviceName
149	* Variables :
150	* Result : HMDeviceHandler * - pointer to the handler object
151	* Remark :
152	* Status :
153	*
154	* Author : Patrick Haller [Wed, 1998/02/11 20:42]
155	*****************************************************************************/
156
157	static HMDeviceHandler *_HMDeviceFind (PSZ pszDeviceName)
158	{
159	PHMDEVICE pHMDevice; /* iterator over the device table */
160
161	if (pszDeviceName != NULL)
162	for (pHMDevice = TabWin32Devices; /* loop over all devices in the table */
163	pHMDevice != NULL;
164	pHMDevice = pHMDevice->pNext)
165	{
166	if (stricmp(pHMDevice->pszDeviceName, /* case-insensitive search */
167	pszDeviceName) == 0)
168	return (pHMDevice->pDeviceHandler); /* OK, we've found our device */
169	}
170
171	return (HMGlobals.pHMOpen32); /* haven't found anything, return default */
172	}
173
174
175	/*****************************************************************************
176	* Name : static int _HMHandleGetFree
177	* Purpose : get index to first free handle in the handle table
178	* Parameters:
179	* Variables :
180	* Result : int iIndex - index to the table or -1 in case of error
181	* Remark :
182	* Status :
183	*
184	* Author : Patrick Haller [Wed, 1998/02/11 20:43]
185	*****************************************************************************/
186
187	static ULONG _HMHandleGetFree(void)
188	{
189	register ULONG ulLoop;
190
191	for (ulLoop = 0;
192	ulLoop < MAX_OS2_HMHANDLES;
193	ulLoop++)
194	{
195	/* free handle found ? */
196	if (INVALID_HANDLE_VALUE == TabWin32Handles[ulLoop].hmHandleData.hHMHandle)
197	return (ulLoop); /* OK, then return it to the caller */
198	}
199
200	return (INVALID_HANDLE_VALUE); /* haven't found any free handle */
201	}
202
203
204	/*****************************************************************************
205	* Name : static int _HMHandleQuery
206	* Purpose : gets the index of handle table entry as fast as possible from
207	* the specified handle
208	* Parameters: HANDLE hHandle
209	* Variables :
210	* Result : index or -1 in case of error
211	* Remark :
212	* Status :
213	*
214	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
215	*****************************************************************************/
216
217	static ULONG _HMHandleQuery(HANDLE hHandle)
218	{
219	if (hHandle > MAX_OS2_HMHANDLES) /* check the table range */
220	return (INVALID_HANDLE_VALUE); /* nope, ERROR_INVALID_HANDLE */
221
222	/* Oops, invalid handle ! */
223	if (INVALID_HANDLE_VALUE == TabWin32Handles[hHandle].hmHandleData.hHMHandle)
224	return (INVALID_HANDLE_VALUE); /* nope, ERROR_INVALID_HANDLE */
225
226	return ( hHandle); /* OK, we've got our handle index */
227	}
228
229
230	/*****************************************************************************
231	* Name : DWORD HMDeviceRegister
232	* Purpose : register a device with the handle manager
233	* Parameters: PSZ pszDeviceName
234	* HMDeviceHandler *pDeviceHandler
235	* Variables :
236	* Result : API returncode
237	* Remark :
238	* Status :
239	*
240	* Author : Patrick Haller [Wed, 1998/02/12 20:44]
241	*****************************************************************************/
242
243	DWORD HMDeviceRegister(PSZ pszDeviceName,
244	HMDeviceHandler *pDeviceHandler)
245	{
246	PHMDEVICE pHMDevice; /* our new device to be allocated */
247
248	if ( (pszDeviceName == NULL) \|\| /* check parameters */
249	(pDeviceHandler == NULL) )
250	return (ERROR_INVALID_PARAMETER); /* raise error conditon */
251
252
253	pHMDevice = (PHMDEVICE) malloc (sizeof (HMDEVICE) ); /* allocate memory */
254	if (pHMDevice == NULL) /* check proper allocation */
255	return (ERROR_NOT_ENOUGH_MEMORY); /* signal error */
256
257	pHMDevice->pszDeviceName = strdup(pszDeviceName); /* copy name */
258	if (pHMDevice->pszDeviceName == NULL) /* check proper allocation */
259	{
260	free (pHMDevice); /* free previously allocated memory */
261	return (ERROR_NOT_ENOUGH_MEMORY); /* signal error */
262	}
263
264	pHMDevice->pDeviceHandler = pDeviceHandler; /* store pointer to device */
265	pHMDevice->pNext = TabWin32Devices; /* establish linkage */
266
267	TabWin32Devices = pHMDevice; /* insert new node as root in the list */
268
269	return (NO_ERROR);
270	}
271
272
273	/*****************************************************************************
274	* Name : DWORD HMInitialize
275	* Purpose : Initialize the handlemanager
276	* Parameters: -
277	* Variables : -
278	* Result : always NO_ERROR
279	* Remark : this routine just stores the standard handles in the
280	* internal table within the HandleManager
281	* Status :
282	*
283	* Author : Patrick Haller [Wed, 1998/02/12 20:44]
284	*****************************************************************************/
285
286	DWORD HMInitialize(void)
287	{
288	ULONG ulIndex;
289
290	if (HMGlobals.fIsInitialized != TRUE)
291	{
292	HMGlobals.fIsInitialized = TRUE; /* OK, done */
293
294	// fill handle table
295	for (ulIndex = 0;
296	ulIndex < MAX_OS2_HMHANDLES;
297	ulIndex++)
298	TabWin32Handles[ulIndex].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
299
300	dprintf(("KERNEL32:HandleManager:HMInitialize() storing handles.\n"));
301
302	memset(&HMGlobals, /* zero out the structure first */
303	0,
304	sizeof(HMGlobals));
305
306	/* copy standard handles from OS/2's Open32 Subsystem */
307	HMSetStdHandle(STD_INPUT_HANDLE, GetStdHandle(STD_INPUT_HANDLE));
308	HMSetStdHandle(STD_OUTPUT_HANDLE, GetStdHandle(STD_OUTPUT_HANDLE));
309	HMSetStdHandle(STD_ERROR_HANDLE, GetStdHandle(STD_ERROR_HANDLE));
310
311	/* create handle manager instance for Open32 handles */
312	ODIN_FS_BEGIN
313	HMGlobals.pHMOpen32 = new HMDeviceOpen32Class("\\\\.\\");
314	HMGlobals.pHMEvent = new HMDeviceEventClass("\\\\EVENT\\");
315	HMGlobals.pHMMutex = new HMDeviceMutexClass("\\\\MUTEX\\");
316	HMGlobals.pHMSemaphore = new HMDeviceSemaphoreClass("\\\\SEM\\");
317	ODIN_FS_END
318	}
319	return (NO_ERROR);
320	}
321
322
323	/*****************************************************************************
324	* Name : DWORD HMTerminate
325	* Purpose : Terminate the handlemanager
326	* Parameters:
327	* Variables :
328	* Result :
329	* Remark :
330	* Status :
331	*
332	* Author : Patrick Haller [Wed, 1998/02/12 20:44]
333	*****************************************************************************/
334
335	DWORD HMTerminate(void)
336	{
337	/* @@@PH we could deallocate the device list here */
338
339	ODIN_FS_BEGIN
340	delete HMGlobals.pHMOpen32;
341	delete HMGlobals.pHMEvent;
342	delete HMGlobals.pHMMutex;
343	delete HMGlobals.pHMSemaphore;
344	ODIN_FS_END
345
346	return (NO_ERROR);
347	}
348
349
350	/*****************************************************************************/
351	/* handle translation buffer management */
352	/* */
353	/* Since some Win32 applications rely (!) on 16-bit handles, we've got to do */
354	/* 32-bit to 16-bit and vs vsa translation here. */
355	/* Filehandle-based functions should be routed via the handlemanager instead */
356	/* of going to Open32 directly. */
357	/*****************************************************************************/
358
359
360	/*****************************************************************************
361	* Name : DWORD HMHandleAllocate
362	* Purpose : allocate a handle in the translation table
363	* Parameters: PULONG pHandle16 - to return the allocated handle
364	* ULONG hHandle32 - the associated OS/2 handle
365	* Variables :
366	* Result : API returncode
367	* Remark : no parameter checking is done, phHandle may not be invalid
368	* hHandle32 shouldn't be 0
369	* Should be protected with a HM-Mutex !
370	* Status :
371	*
372	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
373	*****************************************************************************/
374
375	DWORD HMHandleAllocate (PULONG phHandle16,
376	ULONG hHandleOS2)
377	{
378	register ULONG ulHandle;
379
380	#ifdef DEBUG_LOCAL
381	dprintf(("KERNEL32: HMHandleAllocate (%08xh,%08xh)\n",
382	phHandle16,
383	hHandleOS2));
384	#endif
385
386	ulHandle = HMGlobals.ulHandleLast; /* get free handle */
387
388	do
389	{
390	/* check if handle is free */
391	if (TabWin32Handles[ulHandle].hmHandleData.hHMHandle == INVALID_HANDLE_VALUE)
392	{
393	*phHandle16 = ulHandle;
394	TabWin32Handles[ulHandle].hmHandleData.hHMHandle = hHandleOS2;
395	HMGlobals.ulHandleLast = ulHandle; /* to shorten search times */
396
397	return (NO_ERROR); /* OK */
398	}
399
400	ulHandle++; /* skip to next entry */
401
402	if (ulHandle >= MAX_OS2_HMHANDLES) /* check boundary */
403	ulHandle = 0;
404	}
405	while (ulHandle != HMGlobals.ulHandleLast);
406
407	return (ERROR_TOO_MANY_OPEN_FILES); /* OK, we're done */
408	}
409
410
411	/*****************************************************************************
412	* Name : DWORD HMHandleFree
413	* Purpose : free a handle from the translation table
414	* Parameters: ULONG hHandle16 - the handle to be freed
415	* Variables :
416	* Result : API returncode
417	* Remark : no parameter checking is done, hHandle16 MAY NEVER exceed
418	* the MAX_TRANSLATION_HANDLES boundary
419	* Status :
420	*
421	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
422	*****************************************************************************/
423
424	DWORD HMHandleFree (ULONG hHandle16)
425	{
426	ULONG rc; /* API returncode */
427
428	#ifdef DEBUG_LOCAL
429	dprintf(("KERNEL32: HMHandleFree (%08xh)\n",
430	hHandle16));
431	#endif
432
433	rc = HMHandleValidate(hHandle16); /* verify handle */
434	if (rc != NO_ERROR) /* check errors */
435	return (rc); /* raise error condition */
436
437	TabWin32Handles[hHandle16].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
438	/* OK, done */
439
440	return (NO_ERROR);
441	}
442
443
444	/*****************************************************************************
445	* Name : DWORD HMHandleValidate
446	* Purpose : validate a handle through the translation table
447	* Parameters: ULONG hHandle16 - the handle to be verified
448	* Variables :
449	* Result : API returncode
450	* Remark :
451	* Status :
452	*
453	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
454	*****************************************************************************/
455
456	DWORD HMHandleValidate (ULONG hHandle16)
457	{
458	#ifdef DEBUG_LOCAL
459	dprintf(("KERNEL32: HMHandleValidate (%08xh)\n",
460	hHandle16));
461	#endif
462
463	if (hHandle16 >= MAX_OS2_HMHANDLES) /* check boundary */
464	return (ERROR_INVALID_HANDLE); /* raise error condition */
465
466	if (TabWin32Handles[hHandle16].hmHandleData.hHMHandle == INVALID_HANDLE_VALUE)
467	/* valid ? */
468	return (ERROR_INVALID_HANDLE); /* raise error condition */
469
470	return (NO_ERROR);
471	}
472
473
474	/*****************************************************************************
475	* Name : DWORD HMHandleTranslateToWin
476	* Purpose : translate a 32-bit OS/2 handle to the associated windows handle
477	* Parameters: ULONG hHandle32 - the OS/2 handle
478	* PULONG phHandle16 - the associated windows handle
479	* Variables :
480	* Result : API returncode
481	* Remark :
482	* Status :
483	*
484	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
485	*****************************************************************************/
486
487	DWORD HMHandleTranslateToWin (ULONG hHandleOS2,
488	PULONG phHandle16)
489	{
490	ULONG rc; /* API returncode */
491	register ULONG ulIndex; /* index counter over the table */
492
493	#ifdef DEBUG_LOCAL
494	dprintf(("KERNEL32: HMHandleTranslateToWin (%08xh, %08xh)\n",
495	hHandleOS2,
496	phHandle16));
497	#endif
498
499	for (ulIndex = 0;
500	ulIndex < MAX_OS2_HMHANDLES;
501	ulIndex++)
502	{
503	/* look for the handle */
504	if (TabWin32Handles[ulIndex].hmHandleData.hHMHandle == hHandleOS2)
505	{
506	phHandle16 = ulIndex; / deliver result */
507	return (NO_ERROR); /* OK */
508	}
509	}
510
511	return (ERROR_INVALID_HANDLE); /* raise error condition */
512	}
513
514
515	/*****************************************************************************
516	* Name : DWORD HMHandleTranslateToOS2
517	* Purpose : translate a 16-bit Win32 handle to the associated OS/2 handle
518	* Parameters: ULONG hHandle16 - the windows handle
519	* PULONG phHandle32 - the associated OS/2 handle
520	* Variables :
521	* Result : API returncode
522	* Remark :
523	* Status :
524	*
525	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
526	*****************************************************************************/
527
528	DWORD HMHandleTranslateToOS2 (ULONG hHandle16,
529	PULONG phHandleOS2)
530	{
531	#ifdef DEBUG_LOCAL
532	dprintf(("KERNEL32: HMHandleTranslateToOS2 (%08xh, %08xh)\n",
533	hHandle16,
534	phHandleOS2));
535	#endif
536
537	if (HMHandleValidate(hHandle16) == NO_ERROR) /* verify handle */
538	{
539	*phHandleOS2 = TabWin32Handles[hHandle16].hmHandleData.hHMHandle;
540	return (NO_ERROR);
541	}
542
543	return (ERROR_INVALID_HANDLE); /* raise error condition */
544	}
545
546
547	/*****************************************************************************
548	* Name : DWORD HMHandleTranslateToOS2i
549	* Purpose : translate a 16-bit Win32 handle to the associated OS/2 handle
550	* Parameters: ULONG hHandle16 - the windows handle
551	* Variables :
552	* Result : OS/2 handle
553	* Remark : no checkinf
554	* Status :
555	*
556	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
557	*****************************************************************************/
558
559	DWORD HMHandleTranslateToOS2i (ULONG hHandle16)
560	{
561	#ifdef DEBUG_LOCAL
562	dprintf(("KERNEL32: HMHandleTranslateToOS2i (%08xh)\n",
563	hHandle16));
564	#endif
565
566	return(TabWin32Handles[hHandle16].hmHandleData.hHMHandle);
567	}
568
569
570
571	/*****************************************************************************
572	* Name : HANDLE _HMGetStdHandle
573	* Purpose : replacement for Open32's GetStdHandle function
574	* Parameters: DWORD nStdHandle
575	* Variables :
576	* Result : HANDLE to standard device
577	* Remark :
578	* Status :
579	*
580	* Author : Patrick Haller [Wed, 1998/02/12 20:44]
581	*****************************************************************************/
582
583	HANDLE HMGetStdHandle(DWORD nStdHandle)
584	{
585	switch (nStdHandle)
586	{
587	case STD_INPUT_HANDLE: return (HMGlobals.hStandardIn);
588	case STD_OUTPUT_HANDLE: return (HMGlobals.hStandardOut);
589	case STD_ERROR_HANDLE: return (HMGlobals.hStandardError);
590
591	default:
592	{
593	SetLastError(ERROR_INVALID_PARAMETER); /* set error information */
594	return (INVALID_HANDLE_VALUE); /* raise error condition */
595	}
596	}
597	}
598
599
600	/*****************************************************************************
601	* Name : HANDLE _HMSetStdHandle
602	* Purpose : replacement for Open32's SetStdHandle function
603	* Parameters: DWORD nStdHandle
604	* HANDLE hHandle
605	* Variables :
606	* Result : BOOL fSuccess
607	* Remark :
608	* Status :
609	*
610	* Author : Patrick Haller [Wed, 1998/02/12 20:44]
611	*****************************************************************************/
612
613	BOOL HMSetStdHandle(DWORD nStdHandle,
614	HANDLE hHandle)
615	{
616	switch (nStdHandle)
617	{
618	case STD_INPUT_HANDLE: HMGlobals.hStandardIn = hHandle; return TRUE;
619	case STD_OUTPUT_HANDLE: HMGlobals.hStandardOut = hHandle; return TRUE;
620	case STD_ERROR_HANDLE: HMGlobals.hStandardError = hHandle; return TRUE;
621
622	default:
623	{
624	SetLastError(ERROR_INVALID_PARAMETER); /* set error information */
625	return (FALSE); /* raise error condition */
626	}
627	}
628	}
629
630
631	/*****************************************************************************
632	* Name : HANDLE HMCreateFile
633	* Purpose : Wrapper for the CreateFile() API
634	* Parameters:
635	* Variables :
636	* Result :
637	* Remark : Fix parameters passed to the HMDeviceManager::CreateFile
638	* Supply access mode and share mode validation routines
639	* Status :
640	*
641	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
642	*****************************************************************************/
643
644	HFILE HMCreateFile(LPCSTR lpFileName,
645	DWORD dwDesiredAccess,
646	DWORD dwShareMode,
647	LPSECURITY_ATTRIBUTES lpSecurityAttributes,
648	DWORD dwCreationDisposition,
649	DWORD dwFlagsAndAttributes,
650	HANDLE hTemplateFile)
651	{
652	int iIndex; /* index into the handle table */
653	int iIndexNew; /* index into the handle table */
654	HMDeviceHandler pDeviceHandler; / device handler for this handle */
655	HANDLE hResult;
656	DWORD rc; /* API return code */
657	PHMHANDLEDATA pHMHandleData;
658	HMHANDLEDATA HMHandleTemp; /* temporary buffer for handle data */
659
660	/* create new handle by either lpFileName or hTemplateFile */
661	if (lpFileName == NULL) /* this indicates creation from template */
662	{
663	iIndex = _HMHandleQuery(hTemplateFile); /* query table for template */
664	if (-1 == iIndex) /* this device is unknown to us */
665	{
666	SetLastError (ERROR_INVALID_HANDLE);
667	return INVALID_HANDLE_VALUE;
668	}
669	else
670	{
671	/* to pass to handler */
672	pHMHandleData = &TabWin32Handles[iIndex].hmHandleData;
673	pDeviceHandler = TabWin32Handles[iIndex].pDeviceHandler;
674	}
675	}
676	else
677	{
678	pDeviceHandler = _HMDeviceFind((PSZ)lpFileName); /* find device */
679
680	if (NULL == pDeviceHandler) /* this name is unknown to us */
681	{
682	SetLastError(ERROR_FILE_NOT_FOUND);
683	return (INVALID_HANDLE_VALUE); /* signal error */
684	}
685	else
686	pHMHandleData = NULL;
687	}
688
689
690	iIndexNew = _HMHandleGetFree(); /* get free handle */
691	if (-1 == iIndexNew) /* oops, no free handles ! */
692	{
693	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
694	return (INVALID_HANDLE_VALUE); /* signal error */
695	}
696
697
698	/* initialize the complete HMHANDLEDATA structure */
699	if (lpFileName == NULL) /* create from template */
700	memcpy (&TabWin32Handles[iIndexNew].hmHandleData,
701	&TabWin32Handles[iIndex].hmHandleData,
702	sizeof(HMHANDLEDATA));
703	else
704	{
705	HMHandleTemp.dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
706	HMHandleTemp.dwAccess = dwDesiredAccess;
707	HMHandleTemp.dwShare = dwShareMode;
708	HMHandleTemp.dwCreation = dwCreationDisposition;
709	HMHandleTemp.dwFlags = dwFlagsAndAttributes;
710	HMHandleTemp.lpHandlerData = NULL;
711	}
712
713	/* we've got to mark the handle as occupied here, since another device */
714	/* could be created within the device handler -> deadlock */
715
716	/* write appropriate entry into the handle table if open succeeded */
717	HMHandleTemp.hHMHandle = iIndexNew;
718	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
719
720	/* now copy back our temporary handle data */
721	memcpy(&TabWin32Handles[iIndexNew].hmHandleData,
722	&HMHandleTemp,
723	sizeof(HMHANDLEDATA));
724
725	rc = pDeviceHandler->CreateFile(lpFileName, /* call the device handler */
726	&HMHandleTemp,
727	lpSecurityAttributes,
728	pHMHandleData);
729
730	#ifdef DEBUG_LOCAL
731	dprintf(("KERNEL32/HandleManager:CheckPoint2: %s lpHandlerData=%08xh\n",
732	lpFileName,
733	HMHandleTemp.lpHandlerData));
734	#endif
735
736	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
737	{
738	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
739	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
740	return (INVALID_HANDLE_VALUE); /* signal error */
741	}
742	else
743	{
744	/* copy data fields that might have been modified by CreateFile */
745	memcpy(&TabWin32Handles[iIndexNew].hmHandleData,
746	&HMHandleTemp,
747	sizeof(HMHANDLEDATA));
748	}
749
750
751	#ifdef DEBUG_LOCAL
752	dprintf(("KERNEL32/HandleManager: CreateFile(%s)=%08xh\n",
753	lpFileName,
754	iIndexNew));
755	#endif
756
757	return (HFILE)iIndexNew; /* return valid handle */
758	}
759
760
761	/*****************************************************************************
762	* Name : HANDLE HMOpenFile
763	* Purpose : Wrapper for the OpenFile() API
764	* Parameters:
765	* Variables :
766	* Result :
767	* Remark : Fix parameters passed to the HMDeviceManager::OpenFile
768	* Supply access mode and share mode validation routines
769	* Status :
770	*
771	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
772	*****************************************************************************/
773
774
775	/***********************************************************************
776	* FILE_ConvertOFMode
777	*
778	* Convert OF_* mode into flags for CreateFile.
779	*/
780	static void FILE_ConvertOFMode( INT mode, DWORD access, DWORD sharing )
781	{
782	switch(mode & 0x03)
783	{
784	case OF_READ: *access = GENERIC_READ; break;
785	case OF_WRITE: *access = GENERIC_WRITE; break;
786	case OF_READWRITE: *access = GENERIC_READ \| GENERIC_WRITE; break;
787	default: *access = 0; break;
788	}
789	switch(mode & 0x70)
790	{
791	case OF_SHARE_EXCLUSIVE: *sharing = 0; break;
792	case OF_SHARE_DENY_WRITE: *sharing = FILE_SHARE_READ; break;
793	case OF_SHARE_DENY_READ: *sharing = FILE_SHARE_WRITE; break;
794	case OF_SHARE_DENY_NONE:
795	case OF_SHARE_COMPAT:
796	default: *sharing = FILE_SHARE_READ \| FILE_SHARE_WRITE; break;
797	}
798	}
799
800	HANDLE HMOpenFile(LPCSTR lpFileName,
801	OFSTRUCT* pOFStruct,
802	UINT fuMode)
803	{
804	int iIndex; /* index into the handle table */
805	int iIndexNew; /* index into the handle table */
806	HMDeviceHandler pDeviceHandler; / device handler for this handle */
807	PHMHANDLEDATA pHMHandleData;
808	DWORD rc; /* API return code */
809
810
811	pDeviceHandler = _HMDeviceFind((PSZ)lpFileName); /* find device */
812	if (NULL == pDeviceHandler) /* this name is unknown to us */
813	{
814	SetLastError(ERROR_FILE_NOT_FOUND);
815	return (INVALID_HANDLE_VALUE); /* signal error */
816	}
817	else
818	pHMHandleData = NULL;
819
820
821	iIndexNew = _HMHandleGetFree(); /* get free handle */
822	if (-1 == iIndexNew) /* oops, no free handles ! */
823	{
824	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
825	return (INVALID_HANDLE_VALUE); /* signal error */
826	}
827
828
829	/* initialize the complete HMHANDLEDATA structure */
830	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
831	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
832
833	FILE_ConvertOFMode(fuMode, /* map OF_flags */
834	&pHMHandleData->dwAccess,
835	&pHMHandleData->dwShare);
836
837	pHMHandleData->dwCreation = 0;
838	pHMHandleData->dwFlags = 0;
839	pHMHandleData->lpHandlerData = NULL;
840
841
842	/* we've got to mark the handle as occupied here, since another device */
843	/* could be created within the device handler -> deadlock */
844
845	/* write appropriate entry into the handle table if open succeeded */
846	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
847	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
848
849	rc = pDeviceHandler->OpenFile (lpFileName, /* call the device handler */
850	&TabWin32Handles[iIndexNew].hmHandleData,
851	pOFStruct,
852	fuMode);
853
854	#ifdef DEBUG_LOCAL
855	dprintf(("KERNEL32/HandleManager:CheckPoint3: %s lpHandlerData=%08xh rc=%08xh\n",
856	lpFileName,
857	&TabWin32Handles[iIndexNew].hmHandleData.lpHandlerData,
858	rc));
859	#endif
860
861	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
862	{
863	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
864	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
865	return (INVALID_HANDLE_VALUE); /* signal error */
866	}
867
868	#ifdef DEBUG_LOCAL
869	dprintf(("KERNEL32/HandleManager: OpenFile(%s)=%08xh\n",
870	lpFileName,
871	hResult));
872	#endif
873
874	return iIndexNew; /* return valid handle */
875	}
876
877
878
879	/*****************************************************************************
880	* Name : HANDLE HMCloseFile
881	* Purpose : Wrapper for the CloseHandle() API
882	* Parameters:
883	* Variables :
884	* Result :
885	* Remark :
886	* Status :
887	*
888	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
889	*****************************************************************************/
890
891	BOOL HMCloseHandle(HANDLE hObject)
892	{
893	int iIndex; /* index into the handle table */
894	BOOL fResult; /* result from the device handler's CloseHandle() */
895	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
896
897	/* validate handle */
898	iIndex = _HMHandleQuery(hObject); /* get the index */
899	if (-1 == iIndex) /* error ? */
900	{
901	//@@@PH it may occur someone closes e.g. a semaphore handle
902	// which is not registered through the HandleManager yet.
903	// so we try to pass on to Open32 instead.
904	dprintf(("KERNEL32: HandleManager:HMCloseHandle(%08xh) passed on to Open32.\n",
905	hObject));
906
907	fResult = O32_CloseHandle(hObject);
908	return (fResult);
909
910	//SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
911	//return (FALSE); /* signal failure */
912	}
913
914	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
915	//SvL: Check if pDeviceHandler is set
916	if (pHMHandle->pDeviceHandler) {
917	fResult = pHMHandle->pDeviceHandler->CloseHandle(&pHMHandle->hmHandleData);
918	}
919	else {
920	dprintf(("HMCloseHAndle(%08xh): pDeviceHandler not set", hObject));
921	fResult = TRUE;
922	}
923
924	if (fResult == TRUE) /* remove handle if close succeeded */
925	pHMHandle->hmHandleData.hHMHandle = 0; /* mark handle as free */
926
927	return (fResult); /* deliver return code */
928	}
929
930
931	/*****************************************************************************
932	* Name : HANDLE HMReadFile
933	* Purpose : Wrapper for the ReadHandle() API
934	* Parameters:
935	* Variables :
936	* Result :
937	* Remark :
938	* Status :
939	*
940	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
941	*****************************************************************************/
942
943	BOOL HMReadFile(HANDLE hFile,
944	LPVOID lpBuffer,
945	DWORD nNumberOfBytesToRead,
946	LPDWORD lpNumberOfBytesRead,
947	LPOVERLAPPED lpOverlapped)
948	{
949	int iIndex; /* index into the handle table */
950	BOOL fResult; /* result from the device handler's CloseHandle() */
951	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
952
953	/* validate handle */
954	iIndex = _HMHandleQuery(hFile); /* get the index */
955	if (-1 == iIndex) /* error ? */
956	{
957	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
958	return (FALSE); /* signal failure */
959	}
960
961	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
962	fResult = pHMHandle->pDeviceHandler->ReadFile(&pHMHandle->hmHandleData,
963	lpBuffer,
964	nNumberOfBytesToRead,
965	lpNumberOfBytesRead,
966	lpOverlapped);
967
968	return (fResult); /* deliver return code */
969	}
970
971
972	/*****************************************************************************
973	* Name : HANDLE HMWriteFile
974	* Purpose : Wrapper for the WriteHandle() API
975	* Parameters:
976	* Variables :
977	* Result :
978	* Remark :
979	* Status :
980	*
981	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
982	*****************************************************************************/
983
984	BOOL HMWriteFile(HANDLE hFile,
985	LPCVOID lpBuffer,
986	DWORD nNumberOfBytesToWrite,
987	LPDWORD lpNumberOfBytesWritten,
988	LPOVERLAPPED lpOverlapped)
989	{
990	int iIndex; /* index into the handle table */
991	BOOL fResult; /* result from the device handler's CloseHandle() */
992	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
993
994	/* validate handle */
995	iIndex = _HMHandleQuery(hFile); /* get the index */
996	if (-1 == iIndex) /* error ? */
997	{
998	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
999	return (FALSE); /* signal failure */
1000	}
1001
1002	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1003	fResult = pHMHandle->pDeviceHandler->WriteFile(&pHMHandle->hmHandleData,
1004	lpBuffer,
1005	nNumberOfBytesToWrite,
1006	lpNumberOfBytesWritten,
1007	lpOverlapped);
1008
1009	return (fResult); /* deliver return code */
1010	}
1011
1012
1013	/*****************************************************************************
1014	* Name : HANDLE HMGetFileType
1015	* Purpose : Wrapper for the GetFileType() API
1016	* Parameters:
1017	* Variables :
1018	* Result :
1019	* Remark :
1020	* Status :
1021	*
1022	* Author : Patrick Haller [Wed, 1998/02/12 13:37]
1023	*****************************************************************************/
1024
1025	DWORD HMGetFileType(HANDLE hFile)
1026	{
1027	int iIndex; /* index into the handle table */
1028	DWORD dwResult; /* result from the device handler's API */
1029	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1030
1031	/* validate handle */
1032	iIndex = _HMHandleQuery(hFile); /* get the index */
1033	if (-1 == iIndex) /* error ? */
1034	{
1035	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1036	return (INVALID_HANDLE_ERROR); /* signal failure */
1037	}
1038
1039	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1040	dwResult = pHMHandle->pDeviceHandler->GetFileType(&pHMHandle->hmHandleData);
1041
1042	return (dwResult); /* deliver return code */
1043	}
1044
1045
1046	/*****************************************************************************
1047	* Name : HMDeviceHandler::_DeviceReuqest
1048	* Purpose : entry method for special request functions
1049	* Parameters: ULONG ulRequestCode
1050	* various parameters as required
1051	* Variables :
1052	* Result :
1053	* Remark : the standard behaviour is to return an error code for non-
1054	* existant request codes
1055	* Status :
1056	*
1057	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
1058	*****************************************************************************/
1059
1060	DWORD HMDeviceRequest (HANDLE hFile,
1061	ULONG ulRequestCode,
1062	ULONG arg1,
1063	ULONG arg2,
1064	ULONG arg3,
1065	ULONG arg4)
1066	{
1067	int iIndex; /* index into the handle table */
1068	DWORD dwResult; /* result from the device handler's API */
1069	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1070
1071	/* validate handle */
1072	iIndex = _HMHandleQuery(hFile); /* get the index */
1073	if (-1 == iIndex) /* error ? */
1074	{
1075	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1076	return (INVALID_HANDLE_ERROR); /* signal failure */
1077	}
1078
1079	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1080	dwResult = pHMHandle->pDeviceHandler->_DeviceRequest(&pHMHandle->hmHandleData,
1081	ulRequestCode,
1082	arg1,
1083	arg2,
1084	arg3,
1085	arg4);
1086
1087	return (dwResult); /* deliver return code */
1088	}
1089
1090
1091	/*****************************************************************************
1092	* Name : HMDeviceHandler::GetFileInformationByHandle
1093	* Purpose : router function for GetFileInformationByHandle
1094	* Parameters:
1095	* Variables :
1096	* Result :
1097	* Remark :
1098	* Status :
1099	*
1100	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1101	*****************************************************************************/
1102
1103	BOOL HMGetFileInformationByHandle (HANDLE hFile,
1104	BY_HANDLE_FILE_INFORMATION *pHFI)
1105	{
1106	int iIndex; /* index into the handle table */
1107	DWORD dwResult; /* result from the device handler's API */
1108	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1109
1110	/* validate handle */
1111	iIndex = _HMHandleQuery(hFile); /* get the index */
1112	if (-1 == iIndex) /* error ? */
1113	{
1114	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1115	return (INVALID_HANDLE_ERROR); /* signal failure */
1116	}
1117
1118	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1119	dwResult = pHMHandle->pDeviceHandler->GetFileInformationByHandle(&pHMHandle->hmHandleData,
1120	pHFI);
1121
1122	return (dwResult); /* deliver return code */
1123	}
1124
1125
1126	/*****************************************************************************
1127	* Name : HMDeviceHandler::SetEndOfFile
1128	* Purpose : router function for SetEndOfFile
1129	* Parameters:
1130	* Variables :
1131	* Result :
1132	* Remark :
1133	* Status :
1134	*
1135	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1136	*****************************************************************************/
1137
1138	BOOL HMSetEndOfFile (HANDLE hFile)
1139	{
1140	int iIndex; /* index into the handle table */
1141	BOOL bResult; /* result from the device handler's API */
1142	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1143
1144	/* validate handle */
1145	iIndex = _HMHandleQuery(hFile); /* get the index */
1146	if (-1 == iIndex) /* error ? */
1147	{
1148	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1149	return (INVALID_HANDLE_ERROR); /* signal failure */
1150	}
1151
1152	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1153	bResult = pHMHandle->pDeviceHandler->SetEndOfFile(&pHMHandle->hmHandleData);
1154
1155	return (bResult); /* deliver return code */
1156	}
1157
1158
1159	/*****************************************************************************
1160	* Name : HMDeviceHandler::SetFileTime
1161	* Purpose : router function for SetFileTime
1162	* Parameters:
1163	* Variables :
1164	* Result :
1165	* Remark :
1166	* Status :
1167	*
1168	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1169	*****************************************************************************/
1170
1171	BOOL HMSetFileTime (HANDLE hFile,
1172	const FILETIME *pFT1,
1173	const FILETIME *pFT2,
1174	const FILETIME *pFT3)
1175	{
1176	int iIndex; /* index into the handle table */
1177	BOOL bResult; /* result from the device handler's API */
1178	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1179
1180	/* validate handle */
1181	iIndex = _HMHandleQuery(hFile); /* get the index */
1182	if (-1 == iIndex) /* error ? */
1183	{
1184	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1185	return (INVALID_HANDLE_ERROR); /* signal failure */
1186	}
1187
1188	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1189	bResult = pHMHandle->pDeviceHandler->SetFileTime(&pHMHandle->hmHandleData,
1190	(LPFILETIME)pFT1,
1191	(LPFILETIME)pFT2,
1192	(LPFILETIME)pFT3);
1193
1194	return (bResult); /* deliver return code */
1195	}
1196
1197
1198	/*****************************************************************************
1199	* Name : HMDeviceHandler::GetFileSize
1200	* Purpose : router function for GetFileSize
1201	* Parameters:
1202	* Variables :
1203	* Result :
1204	* Remark :
1205	* Status :
1206	*
1207	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1208	*****************************************************************************/
1209
1210	DWORD HMGetFileSize (HANDLE hFile,
1211	PDWORD pSize)
1212	{
1213	int iIndex; /* index into the handle table */
1214	DWORD dwResult; /* result from the device handler's API */
1215	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1216
1217	/* validate handle */
1218	iIndex = _HMHandleQuery(hFile); /* get the index */
1219	if (-1 == iIndex) /* error ? */
1220	{
1221	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1222	return (INVALID_HANDLE_ERROR); /* signal failure */
1223	}
1224
1225	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1226	dwResult = pHMHandle->pDeviceHandler->GetFileSize(&pHMHandle->hmHandleData,
1227	pSize);
1228
1229	return (dwResult); /* deliver return code */
1230	}
1231
1232
1233	/*****************************************************************************
1234	* Name : HMDeviceHandler::SetFilePointer
1235	* Purpose : router function for SetFilePointer
1236	* Parameters:
1237	* Variables :
1238	* Result :
1239	* Remark :
1240	* Status :
1241	*
1242	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1243	*****************************************************************************/
1244
1245	DWORD HMSetFilePointer (HANDLE hFile,
1246	LONG lDistanceToMove,
1247	PLONG lpDistanceToMoveHigh,
1248	DWORD dwMoveMethod)
1249	{
1250	int iIndex; /* index into the handle table */
1251	DWORD dwResult; /* result from the device handler's API */
1252	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1253
1254	/* validate handle */
1255	iIndex = _HMHandleQuery(hFile); /* get the index */
1256	if (-1 == iIndex) /* error ? */
1257	{
1258	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1259	return (INVALID_HANDLE_ERROR); /* signal failure */
1260	}
1261
1262	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1263	dwResult = pHMHandle->pDeviceHandler->SetFilePointer(&pHMHandle->hmHandleData,
1264	lDistanceToMove,
1265	lpDistanceToMoveHigh,
1266	dwMoveMethod);
1267
1268	return (dwResult); /* deliver return code */
1269	}
1270
1271
1272	/*****************************************************************************
1273	* Name : HMDeviceHandler::LockFile
1274	* Purpose : router function for LockFile
1275	* Parameters:
1276	* Variables :
1277	* Result :
1278	* Remark :
1279	* Status :
1280	*
1281	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1282	*****************************************************************************/
1283
1284	BOOL HMLockFile (HFILE hFile,
1285	DWORD arg2,
1286	DWORD arg3,
1287	DWORD arg4,
1288	DWORD arg5)
1289	{
1290	int iIndex; /* index into the handle table */
1291	DWORD dwResult; /* result from the device handler's API */
1292	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1293
1294	/* validate handle */
1295	iIndex = _HMHandleQuery(hFile); /* get the index */
1296	if (-1 == iIndex) /* error ? */
1297	{
1298	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1299	return (INVALID_HANDLE_ERROR); /* signal failure */
1300	}
1301
1302	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1303	dwResult = pHMHandle->pDeviceHandler->LockFile(&pHMHandle->hmHandleData,
1304	arg2,
1305	arg3,
1306	arg4,
1307	arg5);
1308
1309	return (dwResult); /* deliver return code */
1310	}
1311
1312
1313	/*****************************************************************************
1314	* Name : HMDeviceHandler::LockFileEx
1315	* Purpose : router function for LockFileEx
1316	* Parameters:
1317	* Variables :
1318	* Result :
1319	* Remark :
1320	* Status :
1321	*
1322	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1323	*****************************************************************************/
1324
1325	BOOL HMLockFileEx(HANDLE hFile,
1326	DWORD dwFlags,
1327	DWORD dwReserved,
1328	DWORD nNumberOfBytesToLockLow,
1329	DWORD nNumberOfBytesToLockHigh,
1330	LPOVERLAPPED lpOverlapped)
1331	{
1332	int iIndex; /* index into the handle table */
1333	DWORD dwResult; /* result from the device handler's API */
1334	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1335
1336	/* validate handle */
1337	iIndex = _HMHandleQuery(hFile); /* get the index */
1338	if (-1 == iIndex) /* error ? */
1339	{
1340	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1341	return (INVALID_HANDLE_ERROR); /* signal failure */
1342	}
1343
1344	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1345	dwResult = pHMHandle->pDeviceHandler->LockFileEx(&pHMHandle->hmHandleData,
1346	dwFlags,
1347	dwReserved,
1348	nNumberOfBytesToLockLow,
1349	nNumberOfBytesToLockHigh,
1350	lpOverlapped);
1351
1352	return (dwResult); /* deliver return code */
1353	}
1354
1355
1356
1357	/*****************************************************************************
1358	* Name : HMDeviceHandler::UnlockFile
1359	* Purpose : router function for UnlockFile
1360	* Parameters:
1361	* Variables :
1362	* Result :
1363	* Remark :
1364	* Status :
1365	*
1366	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1367	*****************************************************************************/
1368
1369	BOOL HMUnlockFile (HFILE hFile,
1370	DWORD arg2,
1371	DWORD arg3,
1372	DWORD arg4,
1373	DWORD arg5)
1374	{
1375	int iIndex; /* index into the handle table */
1376	DWORD dwResult; /* result from the device handler's API */
1377	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1378
1379	/* validate handle */
1380	iIndex = _HMHandleQuery(hFile); /* get the index */
1381	if (-1 == iIndex) /* error ? */
1382	{
1383	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1384	return (INVALID_HANDLE_ERROR); /* signal failure */
1385	}
1386
1387	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1388	dwResult = pHMHandle->pDeviceHandler->UnlockFile(&pHMHandle->hmHandleData,
1389	arg2,
1390	arg3,
1391	arg4,
1392	arg5);
1393
1394	return (dwResult); /* deliver return code */
1395	}
1396
1397
1398	/*****************************************************************************
1399	* Name : HMDeviceHandler::UnlockFileEx
1400	* Purpose : router function for UnlockFileEx
1401	* Parameters:
1402	* Variables :
1403	* Result :
1404	* Remark :
1405	* Status :
1406	*
1407	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1408	*****************************************************************************/
1409
1410	BOOL HMUnlockFileEx(HANDLE hFile,
1411	DWORD dwFlags,
1412	DWORD dwReserved,
1413	DWORD nNumberOfBytesToLockLow,
1414	DWORD nNumberOfBytesToLockHigh,
1415	LPOVERLAPPED lpOverlapped)
1416	{
1417	int iIndex; /* index into the handle table */
1418	DWORD dwResult; /* result from the device handler's API */
1419	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1420
1421	/* validate handle */
1422	iIndex = _HMHandleQuery(hFile); /* get the index */
1423	if (-1 == iIndex) /* error ? */
1424	{
1425	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1426	return (INVALID_HANDLE_ERROR); /* signal failure */
1427	}
1428
1429	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1430	dwResult = pHMHandle->pDeviceHandler->UnlockFileEx(&pHMHandle->hmHandleData,
1431	dwFlags,
1432	dwReserved,
1433	nNumberOfBytesToLockLow,
1434	nNumberOfBytesToLockHigh,
1435	lpOverlapped);
1436
1437	return (dwResult); /* deliver return code */
1438	}
1439
1440
1441	/*****************************************************************************
1442	* Name : HMDeviceHandler::WaitForSingleObject
1443	* Purpose : router function for WaitForSingleObject
1444	* Parameters:
1445	* Variables :
1446	* Result :
1447	* Remark :
1448	* Status :
1449	*
1450	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1451	*****************************************************************************/
1452
1453	DWORD HMWaitForSingleObject(HANDLE hObject,
1454	DWORD dwTimeout)
1455	{
1456	int iIndex; /* index into the handle table */
1457	DWORD dwResult; /* result from the device handler's API */
1458	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1459
1460	/* validate handle */
1461	iIndex = _HMHandleQuery(hObject); /* get the index */
1462	if (-1 == iIndex) /* error ? */
1463	{
1464	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1465	return (INVALID_HANDLE_ERROR); /* signal failure */
1466	}
1467
1468	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1469	dwResult = pHMHandle->pDeviceHandler->WaitForSingleObject(&pHMHandle->hmHandleData,
1470	dwTimeout);
1471
1472	return (dwResult); /* deliver return code */
1473	}
1474
1475
1476	/*****************************************************************************
1477	* Name : HMDeviceHandler::WaitForSingleObjectEx
1478	* Purpose : router function for WaitForSingleObjectEx
1479	* Parameters:
1480	* Variables :
1481	* Result :
1482	* Remark :
1483	* Status :
1484	*
1485	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1486	*****************************************************************************/
1487
1488	DWORD HMWaitForSingleObjectEx(HANDLE hObject,
1489	DWORD dwTimeout,
1490	BOOL fAlertable)
1491	{
1492	int iIndex; /* index into the handle table */
1493	DWORD dwResult; /* result from the device handler's API */
1494	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1495
1496	/* validate handle */
1497	iIndex = _HMHandleQuery(hObject); /* get the index */
1498	if (-1 == iIndex) /* error ? */
1499	{
1500	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1501	return (INVALID_HANDLE_ERROR); /* signal failure */
1502	}
1503
1504	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1505	dwResult = pHMHandle->pDeviceHandler->WaitForSingleObjectEx(&pHMHandle->hmHandleData,
1506	dwTimeout,
1507	fAlertable);
1508
1509	return (dwResult); /* deliver return code */
1510	}
1511
1512
1513	/*****************************************************************************
1514	* Name : HMDeviceHandler::FlushFileBuffers
1515	* Purpose : router function for FlushFileBuffers
1516	* Parameters:
1517	* Variables :
1518	* Result :
1519	* Remark :
1520	* Status :
1521	*
1522	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1523	*****************************************************************************/
1524
1525	BOOL HMFlushFileBuffers(HANDLE hFile)
1526	{
1527	int iIndex; /* index into the handle table */
1528	DWORD dwResult; /* result from the device handler's API */
1529	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1530
1531	/* validate handle */
1532	iIndex = _HMHandleQuery(hFile); /* get the index */
1533	if (-1 == iIndex) /* error ? */
1534	{
1535	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1536	return (INVALID_HANDLE_ERROR); /* signal failure */
1537	}
1538
1539	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1540	dwResult = pHMHandle->pDeviceHandler->FlushFileBuffers(&pHMHandle->hmHandleData);
1541
1542	return (dwResult); /* deliver return code */
1543	}
1544
1545
1546	/*****************************************************************************
1547	* Name : HMDeviceHandler::GetOverlappedResult
1548	* Purpose : router function for GetOverlappedResult
1549	* Parameters:
1550	* Variables :
1551	* Result :
1552	* Remark :
1553	* Status :
1554	*
1555	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1556	*****************************************************************************/
1557
1558	BOOL HMGetOverlappedResult(HANDLE hObject,
1559	LPOVERLAPPED lpOverlapped,
1560	LPDWORD arg3,
1561	BOOL arg4)
1562	{
1563	int iIndex; /* index into the handle table */
1564	DWORD dwResult; /* result from the device handler's API */
1565	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1566
1567	/* validate handle */
1568	iIndex = _HMHandleQuery(hObject); /* get the index */
1569	if (-1 == iIndex) /* error ? */
1570	{
1571	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1572	return (INVALID_HANDLE_ERROR); /* signal failure */
1573	}
1574
1575	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1576	dwResult = pHMHandle->pDeviceHandler->GetOverlappedResult(&pHMHandle->hmHandleData,
1577	lpOverlapped,
1578	arg3,
1579	arg4);
1580
1581	return (dwResult); /* deliver return code */
1582	}
1583
1584
1585	/*****************************************************************************
1586	* Name : HMReleaseMutex
1587	* Purpose : router function for ReleaseMutex
1588	* Parameters:
1589	* Variables :
1590	* Result :
1591	* Remark :
1592	* Status :
1593	*
1594	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1595	*****************************************************************************/
1596
1597	BOOL HMReleaseMutex(HANDLE hObject)
1598	{
1599	int iIndex; /* index into the handle table */
1600	DWORD dwResult; /* result from the device handler's API */
1601	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1602
1603	/* validate handle */
1604	iIndex = _HMHandleQuery(hObject); /* get the index */
1605	if (-1 == iIndex) /* error ? */
1606	{
1607	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1608	return (INVALID_HANDLE_ERROR); /* signal failure */
1609	}
1610
1611	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1612	dwResult = pHMHandle->pDeviceHandler->ReleaseMutex(&pHMHandle->hmHandleData);
1613
1614	return (dwResult); /* deliver return code */
1615	}
1616
1617
1618	/*****************************************************************************
1619	* Name : HMSetEvent
1620	* Purpose : router function for SetEvent
1621	* Parameters:
1622	* Variables :
1623	* Result :
1624	* Remark :
1625	* Status :
1626	*
1627	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1628	*****************************************************************************/
1629
1630	BOOL HMSetEvent(HANDLE hEvent)
1631	{
1632	int iIndex; /* index into the handle table */
1633	DWORD dwResult; /* result from the device handler's API */
1634	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1635
1636	/* validate handle */
1637	iIndex = _HMHandleQuery(hEvent); /* get the index */
1638	if (-1 == iIndex) /* error ? */
1639	{
1640	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1641	return (INVALID_HANDLE_ERROR); /* signal failure */
1642	}
1643
1644	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1645	dwResult = pHMHandle->pDeviceHandler->SetEvent(&pHMHandle->hmHandleData);
1646
1647	return (dwResult); /* deliver return code */
1648	}
1649
1650
1651	/*****************************************************************************
1652	* Name : HMPulseEvent
1653	* Purpose : router function for PulseEvent
1654	* Parameters:
1655	* Variables :
1656	* Result :
1657	* Remark :
1658	* Status :
1659	*
1660	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1661	*****************************************************************************/
1662
1663	BOOL HMPulseEvent(HANDLE hEvent)
1664	{
1665	int iIndex; /* index into the handle table */
1666	DWORD dwResult; /* result from the device handler's API */
1667	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1668
1669	/* validate handle */
1670	iIndex = _HMHandleQuery(hEvent); /* get the index */
1671	if (-1 == iIndex) /* error ? */
1672	{
1673	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1674	return (INVALID_HANDLE_ERROR); /* signal failure */
1675	}
1676
1677	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1678	dwResult = pHMHandle->pDeviceHandler->PulseEvent(&pHMHandle->hmHandleData);
1679
1680	return (dwResult); /* deliver return code */
1681	}
1682
1683
1684	/*****************************************************************************
1685	* Name : HMResetEvent
1686	* Purpose : router function for ResetEvent
1687	* Parameters:
1688	* Variables :
1689	* Result :
1690	* Remark :
1691	* Status :
1692	*
1693	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
1694	*****************************************************************************/
1695
1696	BOOL HMResetEvent(HANDLE hEvent)
1697	{
1698	int iIndex; /* index into the handle table */
1699	DWORD dwResult; /* result from the device handler's API */
1700	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
1701
1702	/* validate handle */
1703	iIndex = _HMHandleQuery(hEvent); /* get the index */
1704	if (-1 == iIndex) /* error ? */
1705	{
1706	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
1707	return (INVALID_HANDLE_ERROR); /* signal failure */
1708	}
1709
1710	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
1711	dwResult = pHMHandle->pDeviceHandler->ResetEvent(&pHMHandle->hmHandleData);
1712
1713	return (dwResult); /* deliver return code */
1714	}
1715
1716
1717	/*****************************************************************************
1718	* Name : HANDLE HMCreateEvent
1719	* Purpose : Wrapper for the CreateEvent() API
1720	* Parameters:
1721	* Variables :
1722	* Result :
1723	* Remark :
1724	* Status :
1725	*
1726	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
1727	*****************************************************************************/
1728
1729	HANDLE HMCreateEvent(LPSECURITY_ATTRIBUTES lpsa,
1730	BOOL bManualReset,
1731	BOOL bInitialState,
1732	LPCTSTR lpName)
1733	{
1734	int iIndex; /* index into the handle table */
1735	int iIndexNew; /* index into the handle table */
1736	HMDeviceHandler pDeviceHandler; / device handler for this handle */
1737	PHMHANDLEDATA pHMHandleData;
1738	DWORD rc; /* API return code */
1739
1740
1741	pDeviceHandler = HMGlobals.pHMEvent; /* device is predefined */
1742
1743	iIndexNew = _HMHandleGetFree(); /* get free handle */
1744	if (-1 == iIndexNew) /* oops, no free handles ! */
1745	{
1746	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1747	return (INVALID_HANDLE_VALUE); /* signal error */
1748	}
1749
1750
1751	/* initialize the complete HMHANDLEDATA structure */
1752	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1753	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1754	pHMHandleData->dwAccess = 0;
1755	pHMHandleData->dwShare = 0;
1756	pHMHandleData->dwCreation = 0;
1757	pHMHandleData->dwFlags = 0;
1758	pHMHandleData->lpHandlerData = NULL;
1759
1760
1761	/* we've got to mark the handle as occupied here, since another device */
1762	/* could be created within the device handler -> deadlock */
1763
1764	/* write appropriate entry into the handle table if open succeeded */
1765	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1766	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1767
1768	/* call the device handler */
1769	rc = pDeviceHandler->CreateEvent(&TabWin32Handles[iIndexNew].hmHandleData,
1770	lpsa,
1771	bManualReset,
1772	bInitialState,
1773	lpName);
1774	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1775	{
1776	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1777	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1778	return (INVALID_HANDLE_VALUE); /* signal error */
1779	}
1780
1781	return iIndexNew; /* return valid handle */
1782	}
1783
1784
1785	/*****************************************************************************
1786	* Name : HANDLE HMCreateMutex
1787	* Purpose : Wrapper for the CreateMutex() API
1788	* Parameters:
1789	* Variables :
1790	* Result :
1791	* Remark :
1792	* Status :
1793	*
1794	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
1795	*****************************************************************************/
1796
1797	HANDLE HMCreateMutex(LPSECURITY_ATTRIBUTES lpsa,
1798	BOOL bInitialOwner,
1799	LPCTSTR lpName)
1800	{
1801	int iIndex; /* index into the handle table */
1802	int iIndexNew; /* index into the handle table */
1803	HMDeviceHandler pDeviceHandler; / device handler for this handle */
1804	PHMHANDLEDATA pHMHandleData;
1805	DWORD rc; /* API return code */
1806
1807
1808	pDeviceHandler = HMGlobals.pHMMutex; /* device is predefined */
1809
1810	iIndexNew = _HMHandleGetFree(); /* get free handle */
1811	if (-1 == iIndexNew) /* oops, no free handles ! */
1812	{
1813	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1814	return (INVALID_HANDLE_VALUE); /* signal error */
1815	}
1816
1817
1818	/* initialize the complete HMHANDLEDATA structure */
1819	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1820	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1821	pHMHandleData->dwAccess = 0;
1822	pHMHandleData->dwShare = 0;
1823	pHMHandleData->dwCreation = 0;
1824	pHMHandleData->dwFlags = 0;
1825	pHMHandleData->lpHandlerData = NULL;
1826
1827
1828	/* we've got to mark the handle as occupied here, since another device */
1829	/* could be created within the device handler -> deadlock */
1830
1831	/* write appropriate entry into the handle table if open succeeded */
1832	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1833	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1834
1835	/* call the device handler */
1836	rc = pDeviceHandler->CreateMutex(&TabWin32Handles[iIndexNew].hmHandleData,
1837	lpsa,
1838	bInitialOwner,
1839	lpName);
1840	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1841	{
1842	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1843	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1844	return (INVALID_HANDLE_VALUE); /* signal error */
1845	}
1846
1847	return iIndexNew; /* return valid handle */
1848	}
1849
1850
1851	/*****************************************************************************
1852	* Name : HANDLE HMOpenEvent
1853	* Purpose : Wrapper for the OpenEvent() API
1854	* Parameters:
1855	* Variables :
1856	* Result :
1857	* Remark :
1858	* Status :
1859	*
1860	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
1861	*****************************************************************************/
1862
1863	HANDLE HMOpenEvent(DWORD fdwAccess,
1864	BOOL fInherit,
1865	LPCTSTR lpName)
1866	{
1867	int iIndex; /* index into the handle table */
1868	int iIndexNew; /* index into the handle table */
1869	HMDeviceHandler pDeviceHandler; / device handler for this handle */
1870	PHMHANDLEDATA pHMHandleData;
1871	DWORD rc; /* API return code */
1872
1873
1874	pDeviceHandler = HMGlobals.pHMEvent; /* device is predefined */
1875
1876	iIndexNew = _HMHandleGetFree(); /* get free handle */
1877	if (-1 == iIndexNew) /* oops, no free handles ! */
1878	{
1879	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1880	return (INVALID_HANDLE_VALUE); /* signal error */
1881	}
1882
1883
1884	/* initialize the complete HMHANDLEDATA structure */
1885	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1886	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1887	pHMHandleData->dwAccess = fdwAccess;
1888	pHMHandleData->dwShare = 0;
1889	pHMHandleData->dwCreation = 0;
1890	pHMHandleData->dwFlags = 0;
1891	pHMHandleData->lpHandlerData = NULL;
1892
1893
1894	/* we've got to mark the handle as occupied here, since another device */
1895	/* could be created within the device handler -> deadlock */
1896
1897	/* write appropriate entry into the handle table if open succeeded */
1898	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1899	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1900
1901	/* call the device handler */
1902	rc = pDeviceHandler->OpenEvent(&TabWin32Handles[iIndexNew].hmHandleData,
1903	fInherit,
1904	lpName);
1905	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1906	{
1907	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1908	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1909	return (INVALID_HANDLE_VALUE); /* signal error */
1910	}
1911
1912	return iIndexNew; /* return valid handle */
1913	}
1914
1915
1916	/*****************************************************************************
1917	* Name : HANDLE HMOpenMutex
1918	* Purpose : Wrapper for the OpenMutex() API
1919	* Parameters:
1920	* Variables :
1921	* Result :
1922	* Remark :
1923	* Status :
1924	*
1925	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
1926	*****************************************************************************/
1927
1928	HANDLE HMOpenMutex(DWORD fdwAccess,
1929	BOOL fInherit,
1930	LPCTSTR lpName)
1931	{
1932	int iIndex; /* index into the handle table */
1933	int iIndexNew; /* index into the handle table */
1934	HMDeviceHandler pDeviceHandler; / device handler for this handle */
1935	PHMHANDLEDATA pHMHandleData;
1936	DWORD rc; /* API return code */
1937
1938
1939	pDeviceHandler = HMGlobals.pHMMutex; /* device is predefined */
1940
1941	iIndexNew = _HMHandleGetFree(); /* get free handle */
1942	if (-1 == iIndexNew) /* oops, no free handles ! */
1943	{
1944	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
1945	return (INVALID_HANDLE_VALUE); /* signal error */
1946	}
1947
1948
1949	/* initialize the complete HMHANDLEDATA structure */
1950	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
1951	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
1952	pHMHandleData->dwAccess = fdwAccess;
1953	pHMHandleData->dwShare = 0;
1954	pHMHandleData->dwCreation = 0;
1955	pHMHandleData->dwFlags = 0;
1956	pHMHandleData->lpHandlerData = NULL;
1957
1958
1959	/* we've got to mark the handle as occupied here, since another device */
1960	/* could be created within the device handler -> deadlock */
1961
1962	/* write appropriate entry into the handle table if open succeeded */
1963	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
1964	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
1965
1966	/* call the device handler */
1967	rc = pDeviceHandler->OpenMutex(&TabWin32Handles[iIndexNew].hmHandleData,
1968	fInherit,
1969	lpName);
1970	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
1971	{
1972	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
1973	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
1974	return (INVALID_HANDLE_VALUE); /* signal error */
1975	}
1976
1977	return iIndexNew; /* return valid handle */
1978	}
1979
1980
1981	/*****************************************************************************
1982	* Name : HANDLE HMCreateSemaphore
1983	* Purpose : Wrapper for the CreateSemaphore() API
1984	* Parameters:
1985	* Variables :
1986	* Result :
1987	* Remark :
1988	* Status :
1989	*
1990	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
1991	*****************************************************************************/
1992
1993	HANDLE HMCreateSemaphore(LPSECURITY_ATTRIBUTES lpsa,
1994	LONG lInitialCount,
1995	LONG lMaximumCount,
1996	LPCTSTR lpName)
1997	{
1998	int iIndex; /* index into the handle table */
1999	int iIndexNew; /* index into the handle table */
2000	HMDeviceHandler pDeviceHandler; / device handler for this handle */
2001	PHMHANDLEDATA pHMHandleData;
2002	DWORD rc; /* API return code */
2003
2004
2005	pDeviceHandler = HMGlobals.pHMEvent; /* device is predefined */
2006
2007	iIndexNew = _HMHandleGetFree(); /* get free handle */
2008	if (-1 == iIndexNew) /* oops, no free handles ! */
2009	{
2010	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
2011	return (INVALID_HANDLE_VALUE); /* signal error */
2012	}
2013
2014
2015	/* initialize the complete HMHANDLEDATA structure */
2016	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
2017	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
2018	pHMHandleData->dwAccess = 0;
2019	pHMHandleData->dwShare = 0;
2020	pHMHandleData->dwCreation = 0;
2021	pHMHandleData->dwFlags = 0;
2022	pHMHandleData->lpHandlerData = NULL;
2023
2024
2025	/* we've got to mark the handle as occupied here, since another device */
2026	/* could be created within the device handler -> deadlock */
2027
2028	/* write appropriate entry into the handle table if open succeeded */
2029	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
2030	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
2031
2032	/* call the device handler */
2033	rc = pDeviceHandler->CreateSemaphore(&TabWin32Handles[iIndexNew].hmHandleData,
2034	lpsa,
2035	lInitialCount,
2036	lMaximumCount,
2037	lpName);
2038	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
2039	{
2040	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
2041	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
2042	return (INVALID_HANDLE_VALUE); /* signal error */
2043	}
2044
2045	return iIndexNew; /* return valid handle */
2046	}
2047
2048
2049	/*****************************************************************************
2050	* Name : HANDLE HMOpenSemaphore
2051	* Purpose : Wrapper for the OpenSemaphore() API
2052	* Parameters:
2053	* Variables :
2054	* Result :
2055	* Remark :
2056	* Status :
2057	*
2058	* Author : Patrick Haller [Wed, 1998/02/11 20:44]
2059	*****************************************************************************/
2060
2061	HANDLE HMOpenSemaphore(DWORD fdwAccess,
2062	BOOL fInherit,
2063	LPCTSTR lpName)
2064	{
2065	int iIndex; /* index into the handle table */
2066	int iIndexNew; /* index into the handle table */
2067	HMDeviceHandler pDeviceHandler; / device handler for this handle */
2068	PHMHANDLEDATA pHMHandleData;
2069	DWORD rc; /* API return code */
2070
2071
2072	pDeviceHandler = HMGlobals.pHMMutex; /* device is predefined */
2073
2074	iIndexNew = _HMHandleGetFree(); /* get free handle */
2075	if (-1 == iIndexNew) /* oops, no free handles ! */
2076	{
2077	SetLastError(ERROR_NOT_ENOUGH_MEMORY); /* use this as error message */
2078	return (INVALID_HANDLE_VALUE); /* signal error */
2079	}
2080
2081
2082	/* initialize the complete HMHANDLEDATA structure */
2083	pHMHandleData = &TabWin32Handles[iIndexNew].hmHandleData;
2084	pHMHandleData->dwType = FILE_TYPE_UNKNOWN; /* unknown handle type */
2085	pHMHandleData->dwAccess = fdwAccess;
2086	pHMHandleData->dwShare = 0;
2087	pHMHandleData->dwCreation = 0;
2088	pHMHandleData->dwFlags = 0;
2089	pHMHandleData->lpHandlerData = NULL;
2090
2091
2092	/* we've got to mark the handle as occupied here, since another device */
2093	/* could be created within the device handler -> deadlock */
2094
2095	/* write appropriate entry into the handle table if open succeeded */
2096	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = iIndexNew;
2097	TabWin32Handles[iIndexNew].pDeviceHandler = pDeviceHandler;
2098
2099	/* call the device handler */
2100	rc = pDeviceHandler->OpenSemaphore(&TabWin32Handles[iIndexNew].hmHandleData,
2101	fInherit,
2102	lpName);
2103	if (rc != NO_ERROR) /* oops, creation failed within the device handler */
2104	{
2105	TabWin32Handles[iIndexNew].hmHandleData.hHMHandle = INVALID_HANDLE_VALUE;
2106	SetLastError(rc); /* Hehe, OS/2 and NT are pretty compatible :) */
2107	return (INVALID_HANDLE_VALUE); /* signal error */
2108	}
2109
2110	return iIndexNew; /* return valid handle */
2111	}
2112
2113
2114	/*****************************************************************************
2115	* Name : HMReleaseSemaphore
2116	* Purpose : router function for ReleaseSemaphore
2117	* Parameters:
2118	* Variables :
2119	* Result :
2120	* Remark :
2121	* Status :
2122	*
2123	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
2124	*****************************************************************************/
2125
2126	BOOL HMReleaseSemaphore(HANDLE hEvent,
2127	LONG cReleaseCount,
2128	LPLONG lpPreviousCount)
2129	{
2130	int iIndex; /* index into the handle table */
2131	DWORD dwResult; /* result from the device handler's API */
2132	PHMHANDLE pHMHandle; /* pointer to the handle structure in the table */
2133
2134	/* validate handle */
2135	iIndex = _HMHandleQuery(hEvent); /* get the index */
2136	if (-1 == iIndex) /* error ? */
2137	{
2138	SetLastError(ERROR_INVALID_HANDLE); /* set win32 error information */
2139	return (INVALID_HANDLE_ERROR); /* signal failure */
2140	}
2141
2142	pHMHandle = &TabWin32Handles[iIndex]; /* call device handler */
2143	dwResult = pHMHandle->pDeviceHandler->ReleaseSemaphore(&pHMHandle->hmHandleData,
2144	cReleaseCount,
2145	lpPreviousCount);
2146
2147	return (dwResult); /* deliver return code */
2148	}
2149
2150
2151	/*****************************************************************************
2152	* Name : HMWaitForMultipleObjects
2153	* Purpose : router function for WaitForMultipleObjects
2154	* Parameters:
2155	* Variables :
2156	* Result :
2157	* Remark :
2158	* Status :
2159	*
2160	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
2161	*****************************************************************************/
2162
2163	DWORD HMWaitForMultipleObjects (DWORD cObjects,
2164	PHANDLE lphObjects,
2165	BOOL fWaitAll,
2166	DWORD dwTimeout)
2167	{
2168	ULONG ulIndex;
2169	PHANDLE pArrayOfHandles;
2170	PHANDLE pLoop1 = lphObjects;
2171	PHANDLE pLoop2;
2172	DWORD rc;
2173
2174	// allocate array for handle table
2175	pArrayOfHandles = (PHANDLE)malloc(cObjects * sizeof(HANDLE));
2176	if (pArrayOfHandles == NULL)
2177	{
2178	O32_SetLastError(ERROR_NOT_ENOUGH_MEMORY);
2179	return WAIT_FAILED;
2180	}
2181	else
2182	pLoop2 = pArrayOfHandles;
2183
2184	// convert array to odin handles
2185	for (ulIndex = 0;
2186
2187	ulIndex < cObjects;
2188
2189	ulIndex++,
2190	pLoop1++,
2191	pLoop2++)
2192	{
2193	rc = HMHandleTranslateToOS2 (*pLoop1, // translate handle
2194	pLoop2);
2195
2196	if (rc != NO_ERROR)
2197	{
2198	free (pArrayOfHandles); // free memory
2199	O32_SetLastError(ERROR_INVALID_HANDLE);
2200	return (WAIT_FAILED);
2201	}
2202	}
2203
2204	// OK, now forward to Open32.
2205	// @@@PH: Note this will fail on handles that do NOT belong to Open32
2206	// but to i.e. the console subsystem!
2207	rc = O32_WaitForMultipleObjects(cObjects,
2208	pArrayOfHandles,
2209	fWaitAll,
2210	dwTimeout);
2211
2212	free(pArrayOfHandles); // free memory
2213	return (rc); // OK, done
2214	}
2215
2216
2217	/*****************************************************************************
2218	* Name : HMWaitForMultipleObjectsEx
2219	* Purpose : router function for WaitForMultipleObjectsEx
2220	* Parameters:
2221	* Variables :
2222	* Result :
2223	* Remark :
2224	* Status :
2225	*
2226	* Author : Patrick Haller [Wed, 1999/06/17 20:44]
2227	*****************************************************************************/
2228
2229	DWORD HMWaitForMultipleObjectsEx (DWORD cObjects,
2230	PHANDLE lphObjects,
2231	BOOL fWaitAll,
2232	DWORD dwTimeout,
2233	BOOL fAlertable)
2234	{
2235	// @@@PH: Note: fAlertable is ignored !
2236	return (HMWaitForMultipleObjects(cObjects,
2237	lphObjects,
2238	fWaitAll,
2239	dwTimeout));
2240	}
2241

Note: See TracBrowser for help on using the repository browser.

Download in other formats: