VBoxGuest-os2.cpp@ 58089

Last change on this file since 58089 was 58089, checked in by vboxsync, 10 years ago
VBoxGuest,VBoxService,Doxyfile.Core: fixes.
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1	/* $Id: VBoxGuest-os2.cpp 58089 2015-10-07 12:33:00Z vboxsync $ */
2	/** @file
3	* VBoxGuest - OS/2 specifics.
4	*/
5
6	/*
7	* Copyright (C) 2007-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on:
19	*
20	* VBoxDrv - OS/2 specifics.
21	*
22	* Copyright (c) 2007-2012 knut st. osmundsen <bird-src-spam@anduin.net>
23	*
24	* Permission is hereby granted, free of charge, to any person
25	* obtaining a copy of this software and associated documentation
26	* files (the "Software"), to deal in the Software without
27	* restriction, including without limitation the rights to use,
28	* copy, modify, merge, publish, distribute, sublicense, and/or sell
29	* copies of the Software, and to permit persons to whom the
30	* Software is furnished to do so, subject to the following
31	* conditions:
32	*
33	* The above copyright notice and this permission notice shall be
34	* included in all copies or substantial portions of the Software.
35	*
36	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
37	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
38	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
39	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
40	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
41	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
42	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
43	* OTHER DEALINGS IN THE SOFTWARE.
44	*/
45
46
47	/*********************************************************************************************************************************
48	* Header Files *
49	*********************************************************************************************************************************/
50	#include <os2ddk/bsekee.h>
51
52	#include "VBoxGuestInternal.h"
53	#include <VBox/version.h>
54	#include <iprt/initterm.h>
55	#include <iprt/string.h>
56	#include <iprt/spinlock.h>
57	#include <iprt/process.h>
58	#include <iprt/assert.h>
59	#include <iprt/log.h>
60	#include <iprt/memobj.h>
61	#include <iprt/mem.h>
62	#include <iprt/param.h>
63
64
65	/*********************************************************************************************************************************
66	* Global Variables *
67	*********************************************************************************************************************************/
68	/**
69	* Device extention & session data association structure.
70	*/
71	static VBOXGUESTDEVEXT g_DevExt;
72	/** The memory object for the MMIO memory. */
73	static RTR0MEMOBJ g_MemObjMMIO = NIL_RTR0MEMOBJ;
74	/** The memory mapping object the MMIO memory. */
75	static RTR0MEMOBJ g_MemMapMMIO = NIL_RTR0MEMOBJ;
76
77	/** Spinlock protecting g_apSessionHashTab. */
78	static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
79	/** Hash table */
80	static PVBOXGUESTSESSION g_apSessionHashTab[19];
81	/** Calculates the index into g_apSessionHashTab.*/
82	#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab))
83
84	RT_C_DECLS_BEGIN
85	/* Defined in VBoxGuestA-os2.asm */
86	extern uint32_t g_PhysMMIOBase;
87	extern uint32_t g_cbMMIO; /* 0 currently not set. */
88	extern uint16_t g_IOPortBase;
89	extern uint8_t g_bInterruptLine;
90	extern uint8_t g_bPciBusNo;
91	extern uint8_t g_bPciDevFunNo;
92	extern RTFAR16 g_fpfnVBoxGuestOs2IDCService16;
93	extern RTFAR16 g_fpfnVBoxGuestOs2IDCService16Asm;
94	#ifdef DEBUG_READ
95	/* (debugging) */
96	extern uint16_t g_offLogHead;
97	extern uint16_t volatile g_offLogTail;
98	extern uint16_t const g_cchLogMax;
99	extern char g_szLog[];
100	#endif
101	/* (init only:) */
102	extern char g_szInitText[];
103	extern uint16_t g_cchInitText;
104	extern uint16_t g_cchInitTextMax;
105	RT_C_DECLS_END
106
107
108	/*********************************************************************************************************************************
109	* Internal Functions *
110	*********************************************************************************************************************************/
111	static int vboxGuestOS2MapMemory(void);
112	static VBOXOSTYPE vboxGuestOS2DetectVersion(void);
113
114	/* in VBoxGuestA-os2.asm */
115	DECLASM(int) VBoxGuestOS2SetIRQ(uint8_t bIRQ);
116
117
118	/**
119	* 32-bit Ring-0 initialization.
120	*
121	* This is called from VBoxGuestA-os2.asm upon the first open call to the vboxgst$ device.
122	*
123	* @returns 0 on success, non-zero on failure.
124	* @param pszArgs Pointer to the device arguments.
125	*/
126	DECLASM(int) VBoxGuestOS2Init(const char *pszArgs)
127	{
128	Log(("VBoxGuestOS2Init: pszArgs='%s' MMIO=0x%RX32 IOPort=0x%RX16 Int=%#x Bus=%#x Dev=%#x Fun=%d\n",
129	pszArgs, g_PhysMMIOBase, g_IOPortBase, g_bInterruptLine, g_bPciBusNo, g_bPciDevFunNo >> 3, g_bPciDevFunNo & 7));
130
131	/*
132	* Initialize the runtime.
133	*/
134	int rc = RTR0Init(0);
135	if (RT_SUCCESS(rc))
136	{
137	/*
138	* Process the commandline. Later.
139	*/
140	bool fVerbose = true;
141
142	/*
143	* Map the MMIO memory if found.
144	*/
145	rc = vboxGuestOS2MapMemory();
146	if (RT_SUCCESS(rc))
147	{
148	/*
149	* Initialize the device extension.
150	*/
151	if (g_MemMapMMIO != NIL_RTR0MEMOBJ)
152	rc = VGDrvCommonInitDevExt(&g_DevExt, g_IOPortBase,
153	RTR0MemObjAddress(g_MemMapMMIO),
154	RTR0MemObjSize(g_MemMapMMIO),
155	vboxGuestOS2DetectVersion(),
156	0);
157	else
158	rc = VGDrvCommonInitDevExt(&g_DevExt, g_IOPortBase, NULL, 0, vboxGuestOS2DetectVersion(), 0);
159	if (RT_SUCCESS(rc))
160	{
161	/*
162	* Initialize the session hash table.
163	*/
164	rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxGuestOS2");
165	if (RT_SUCCESS(rc))
166	{
167	/*
168	* Configure the interrupt handler.
169	*/
170	if (g_bInterruptLine)
171	{
172	rc = VBoxGuestOS2SetIRQ(g_bInterruptLine);
173	if (rc)
174	{
175	Log(("VBoxGuestOS2SetIRQ(%d) -> %d\n", g_bInterruptLine, rc));
176	rc = RTErrConvertFromOS2(rc);
177	}
178	}
179	if (RT_SUCCESS(rc))
180	{
181	/*
182	* Success
183	*/
184	if (fVerbose)
185	{
186	strcpy(&g_szInitText[0],
187	"\r\n"
188	"VirtualBox Guest Additions Driver for OS/2 version " VBOX_VERSION_STRING "\r\n"
189	"Copyright (C) 2008-" VBOX_C_YEAR " " VBOX_VENDOR "\r\n");
190	g_cchInitText = strlen(&g_szInitText[0]);
191	}
192	Log(("VBoxGuestOS2Init: Successfully loaded\n%s", g_szInitText));
193	return VINF_SUCCESS;
194	}
195
196	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: SetIrq failed for IRQ %#d, rc=%Rrc\n",
197	g_bInterruptLine, rc);
198	}
199	else
200	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: RTSpinlockCreate failed, rc=%Rrc\n", rc);
201	VGDrvCommonDeleteDevExt(&g_DevExt);
202	}
203	else
204	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: VBoxGuestOS2InitDevExt failed, rc=%Rrc\n", rc);
205
206	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
207	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
208	}
209	else
210	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: VBoxGuestOS2MapMMIO failed, rc=%Rrc\n", rc);
211	RTR0Term();
212	}
213	else
214	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: RTR0Init failed, rc=%Rrc\n", rc);
215
216	RTLogBackdoorPrintf("VBoxGuestOS2Init: failed rc=%Rrc - %s", rc, &g_szInitText[0]);
217	return rc;
218	}
219
220
221	/**
222	* Maps the VMMDev memory.
223	*
224	* @returns VBox status code.
225	* @retval VERR_VERSION_MISMATCH The VMMDev memory didn't meet our expectations.
226	*/
227	static int vboxGuestOS2MapMemory(void)
228	{
229	const RTCCPHYS PhysMMIOBase = g_PhysMMIOBase;
230
231	/*
232	* Did we find any MMIO region (0 or NIL)?
233	*/
234	if ( !PhysMMIOBase
235	\|\| PhysMMIOBase == NIL_RTCCPHYS)
236	{
237	Assert(g_MemMapMMIO != NIL_RTR0MEMOBJ);
238	return VINF_SUCCESS;
239	}
240
241	/*
242	* Create a physical memory object for it.
243	*
244	* Since we don't know the actual size (OS/2 doesn't at least), we make
245	* a qualified guess using the VMMDEV_RAM_SIZE.
246	*/
247	size_t cb = RT_ALIGN_Z(VMMDEV_RAM_SIZE, PAGE_SIZE);
248	int rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
249	if (RT_FAILURE(rc))
250	{
251	cb = _4K;
252	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
253	}
254	if (RT_FAILURE(rc))
255	{
256	Log(("vboxGuestOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc\n",
257	PhysMMIOBase, cb, rc));
258	return rc;
259	}
260
261	/*
262	* Map the object into kernel space.
263	*
264	* We want a normal mapping with normal caching, which good in two ways. First
265	* since the API doesn't have any flags indicating how the mapping should be cached.
266	* And second, because PGM doesn't necessarily respect the cache/writethru bits
267	* anyway for normal RAM.
268	*/
269	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0,
270	RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
271	if (RT_SUCCESS(rc))
272	{
273	/*
274	* Validate the VMM memory.
275	*/
276	VMMDevMemory pVMMDev = (VMMDevMemory )RTR0MemObjAddress(g_MemMapMMIO);
277	Assert(pVMMDev);
278	if ( pVMMDev->u32Version == VMMDEV_MEMORY_VERSION
279	&& pVMMDev->u32Size >= 32 /* just for checking sanity */)
280	{
281	/*
282	* Did we hit the correct size? If not we'll have to
283	* redo the mapping using the correct size.
284	*/
285	if (RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE) == cb)
286	return VINF_SUCCESS;
287
288	Log(("vboxGuestOS2MapMemory: Actual size %#RX32 (tried %#zx)\n", pVMMDev->u32Size, cb));
289	cb = RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE);
290
291	rc = RTR0MemObjFree(g_MemObjMMIO, true); AssertRC(rc);
292	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
293
294	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
295	if (RT_SUCCESS(rc))
296	{
297	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0,
298	RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
299	if (RT_SUCCESS(rc))
300	return VINF_SUCCESS;
301
302	Log(("vboxGuestOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc (2nd)\n",
303	PhysMMIOBase, cb, rc));
304	}
305	else
306	Log(("vboxGuestOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc (2nd)\n",
307	PhysMMIOBase, cb, rc));
308	}
309	else
310	{
311	rc = VERR_VERSION_MISMATCH;
312	LogRel(("vboxGuestOS2MapMemory: Bogus VMMDev memory; u32Version=%RX32 (expected %RX32) u32Size=%RX32\n",
313	pVMMDev->u32Version, VMMDEV_MEMORY_VERSION, pVMMDev->u32Size));
314	}
315	}
316	else
317	Log(("vboxGuestOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc\n",
318	PhysMMIOBase, cb, rc));
319
320	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
321	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
322	return rc;
323	}
324
325
326	/**
327	* Called fromn VBoxGuestOS2Init to determine which OS/2 version this is.
328	*
329	* @returns VBox OS/2 type.
330	*/
331	static VBOXOSTYPE vboxGuestOS2DetectVersion(void)
332	{
333	VBOXOSTYPE enmOSType = VBOXOSTYPE_OS2;
334
335	#if 0 /** @todo dig up the version stuff from GIS later and verify that the numbers are actually decimal. */
336	unsigned uMajor, uMinor;
337	if (uMajor == 2)
338	{
339	if (uMinor >= 30 && uMinor < 40)
340	enmOSType = VBOXOSTYPE_OS2Warp3;
341	else if (uMinor >= 40 && uMinor < 45)
342	enmOSType = VBOXOSTYPE_OS2Warp4;
343	else if (uMinor >= 45 && uMinor < 50)
344	enmOSType = VBOXOSTYPE_OS2Warp45;
345	}
346	#endif
347	return enmOSType;
348	}
349
350
351	DECLASM(int) VBoxGuestOS2Open(uint16_t sfn)
352	{
353	int rc;
354	PVBOXGUESTSESSION pSession;
355
356	/*
357	* Create a new session.
358	*/
359	rc = VGDrvCommonCreateUserSession(&g_DevExt, &pSession);
360	if (RT_SUCCESS(rc))
361	{
362	pSession->sfn = sfn;
363
364	/*
365	* Insert it into the hash table.
366	*/
367	unsigned iHash = SESSION_HASH(sfn);
368	RTSpinlockAcquire(g_Spinlock);
369	pSession->pNextHash = g_apSessionHashTab[iHash];
370	g_apSessionHashTab[iHash] = pSession;
371	RTSpinlockRelease(g_Spinlock);
372	}
373
374	Log(("VBoxGuestOS2Open: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, (int)RTProcSelf()));
375	return rc;
376	}
377
378
379	DECLASM(int) VBoxGuestOS2Close(uint16_t sfn)
380	{
381	Log(("VBoxGuestOS2Close: pid=%d sfn=%d\n", (int)RTProcSelf(), sfn));
382
383	/*
384	* Remove from the hash table.
385	*/
386	PVBOXGUESTSESSION pSession;
387	const RTPROCESS Process = RTProcSelf();
388	const unsigned iHash = SESSION_HASH(sfn);
389	RTSpinlockAcquire(g_Spinlock);
390
391	pSession = g_apSessionHashTab[iHash];
392	if (pSession)
393	{
394	if ( pSession->sfn == sfn
395	&& pSession->Process == Process)
396	{
397	g_apSessionHashTab[iHash] = pSession->pNextHash;
398	pSession->pNextHash = NULL;
399	}
400	else
401	{
402	PVBOXGUESTSESSION pPrev = pSession;
403	pSession = pSession->pNextHash;
404	while (pSession)
405	{
406	if ( pSession->sfn == sfn
407	&& pSession->Process == Process)
408	{
409	pPrev->pNextHash = pSession->pNextHash;
410	pSession->pNextHash = NULL;
411	break;
412	}
413
414	/* next */
415	pPrev = pSession;
416	pSession = pSession->pNextHash;
417	}
418	}
419	}
420	RTSpinlockRelease(g_Spinlock);
421	if (!pSession)
422	{
423	Log(("VBoxGuestIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d sfn=%d\n", (int)Process, sfn));
424	return VERR_INVALID_PARAMETER;
425	}
426
427	/*
428	* Close the session.
429	*/
430	VGDrvCommonCloseSession(&g_DevExt, pSession);
431	return 0;
432	}
433
434
435	DECLASM(int) VBoxGuestOS2IOCtlFast(uint16_t sfn, uint8_t iFunction, int32_t *prc)
436	{
437	/*
438	* Find the session.
439	*/
440	const RTPROCESS Process = RTProcSelf();
441	const unsigned iHash = SESSION_HASH(sfn);
442	PVBOXGUESTSESSION pSession;
443
444	RTSpinlockAcquire(g_Spinlock);
445	pSession = g_apSessionHashTab[iHash];
446	if (pSession && pSession->Process != Process)
447	{
448	do pSession = pSession->pNextHash;
449	while ( pSession
450	&& ( pSession->sfn != sfn
451	\|\| pSession->Process != Process));
452	}
453	RTSpinlockRelease(g_Spinlock);
454	if (RT_UNLIKELY(!pSession))
455	{
456	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
457	return VERR_INVALID_PARAMETER;
458	}
459
460	/*
461	* Dispatch the fast IOCtl.
462	*/
463	*prc = VGDrvCommonIoCtlFast(iFunction, &g_DevExt, pSession);
464	return 0;
465	}
466
467
468	/**
469	* 32-bit IDC service routine.
470	*
471	* @returns VBox status code.
472	* @param u32Session The session handle (PVBOXGUESTSESSION).
473	* @param iFunction The requested function.
474	* @param pvData The input/output data buffer. The caller ensures that this
475	* cannot be swapped out, or that it's acceptable to take a
476	* page in fault in the current context. If the request doesn't
477	* take input or produces output, apssing NULL is okay.
478	* @param cbData The size of the data buffer.
479	* @param pcbDataReturned Where to store the amount of data that's returned.
480	* This can be NULL if pvData is NULL.
481	*
482	* @remark This is called from the 16-bit thunker as well as directly from the 32-bit clients.
483	*/
484	DECLASM(int) VBoxGuestOS2IDCService(uint32_t u32Session, unsigned iFunction, void pvData, size_t cbData, size_t pcbDataReturned)
485	{
486	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)u32Session;
487	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
488	AssertMsgReturn(pSession->sfn == 0xffff, ("%RX16\n", pSession->sfn), VERR_INVALID_HANDLE);
489	AssertMsgReturn(pSession->pDevExt == &g_DevExt, ("%p != %p\n", pSession->pDevExt, &g_DevExt), VERR_INVALID_HANDLE);
490
491	int rc;
492	switch (iFunction)
493	{
494	default:
495	rc = VGDrvCommonIoCtl(iFunction, &g_DevExt, pSession, pvData, cbData, pcbDataReturned);
496	break;
497
498	case VBOXGUEST_IOCTL_OS2_IDC_DISCONNECT:
499	pSession->sfn = 0;
500	VGDrvCommonCloseSession(&g_DevExt, pSession);
501	rc = VINF_SUCCESS;
502	break;
503	}
504	return rc;
505	}
506
507
508	/**
509	* Worker for VBoxGuestOS2IDC, it creates the kernel session.
510	*
511	* @returns Pointer to the session.
512	*/
513	DECLASM(PVBOXGUESTSESSION) VBoxGuestOS2IDCConnect(void)
514	{
515	PVBOXGUESTSESSION pSession;
516	int rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
517	if (RT_SUCCESS(rc))
518	{
519	pSession->sfn = 0xffff;
520	return pSession;
521	}
522	return NULL;
523	}
524
525
526	DECLASM(int) VBoxGuestOS2IOCtl(uint16_t sfn, uint8_t iCat, uint8_t iFunction, void pvParm, void pvData, uint16_t pcbParm, uint16_t pcbData)
527	{
528	/*
529	* Find the session.
530	*/
531	const RTPROCESS Process = RTProcSelf();
532	const unsigned iHash = SESSION_HASH(sfn);
533	PVBOXGUESTSESSION pSession;
534
535	RTSpinlockAcquire(g_Spinlock);
536	pSession = g_apSessionHashTab[iHash];
537	if (pSession && pSession->Process != Process)
538	{
539	do pSession = pSession->pNextHash;
540	while ( pSession
541	&& ( pSession->sfn != sfn
542	\|\| pSession->Process != Process));
543	}
544	RTSpinlockRelease(g_Spinlock);
545	if (!pSession)
546	{
547	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
548	return VERR_INVALID_PARAMETER;
549	}
550
551	/*
552	* Verify the category and dispatch the IOCtl.
553	*
554	* The IOCtl call uses the parameter buffer as generic data input/output
555	* buffer similar to the one unix ioctl buffer argument. While the data
556	* buffer is used for passing the VBox status code back to the caller
557	* since the status codes that OS/2 accepts thru the DosDevIOCtl API is
558	* severely restricted.
559	*/
560	if (RT_LIKELY(iCat == VBOXGUEST_IOCTL_CATEGORY))
561	{
562	Log(("VBoxGuestOS2IOCtl: pSession=%p iFunction=%#x pvParm=%p pvData=%p pcbParm=%d pcbData=%d\n", pSession, iFunction, pvParm, pvData, pcbParm, pcbData));
563	Assert(pvParm \|\| !*pcbData);
564	Assert(pvData);
565	Assert(pcbData == sizeof(int32_t)); / the return code */
566
567	/*
568	* Lock the buffers.
569	*/
570	int32_t rc;
571	KernVMLock_t ParmLock;
572	if (pvParm)
573	{
574	Assert(*pcbData);
575	rc = KernVMLock(VMDHL_WRITE, pvParm, pcbParm, &ParmLock, (KernPageList_t )-1, NULL);
576	AssertMsgReturn(!rc, ("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pvParm, *pcbParm, &ParmLock, rc), VERR_LOCK_FAILED);
577	}
578
579	#if 0 /* don't bother locking it since it's only 4 bytes (the return code). */
580	KernVMLock_t DataLock;
581	if (pvData)
582	{
583	Assert(*pcbData);
584	rc = KernVMLock(VMDHL_WRITE, pvData, pcbData, &DataLock, (KernPageList_t )-1, NULL);
585	if (rc)
586	{
587	AssertMsgFailed(("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pvData, *pcbData, &DataLock, rc));
588	KernVMUnlock(&ParmLock);
589	return VERR_LOCK_FAILED;
590	}
591	}
592	#endif
593
594	/*
595	* Process the IOCtl.
596	*/
597	size_t cbDataReturned;
598	rc = VGDrvCommonIoCtl(iFunction, &g_DevExt, pSession, pvParm, *pcbParm, &cbDataReturned);
599
600	/*
601	* Unlock the buffers.
602	*/
603	if (pvParm)
604	{
605	int rc2 = KernVMUnlock(&ParmLock);
606	AssertMsg(!rc2, ("rc2=%d\n", rc2)); NOREF(rc2);
607	AssertMsg(cbDataReturned < _64K, ("cbDataReturned=%d\n", cbDataReturned));
608	*pcbParm = cbDataReturned;
609	}
610	#if 0
611	if (pvData)
612	{
613	int rc2 = KernVMUnlock(&DataLock);
614	AssertMsg(!rc2, ("rc2=%d\n", rc2));
615	}
616	#else
617	rc = KernCopyOut(pvData, &rc, sizeof(int32_t));
618	AssertMsgReturn(!rc, ("KernCopyOut(%p, %p, sizeof(int32_t)) -> %d\n", pvData, &rc, rc), VERR_LOCK_FAILED);
619	#endif
620
621	Log2(("VBoxGuestOS2IOCtl: returns VINF_SUCCESS / %d\n", rc));
622	return VINF_SUCCESS;
623	}
624	return VERR_NOT_SUPPORTED;
625	}
626
627
628	/**
629	* 32-bit ISR, called by 16-bit assembly thunker in VBoxGuestA-os2.asm.
630	*
631	* @returns true if it's our interrupt, false it isn't.
632	*/
633	DECLASM(bool) VBoxGuestOS2ISR(void)
634	{
635	Log(("VBoxGuestOS2ISR\n"));
636
637	return VGDrvCommonISR(&g_DevExt);
638	}
639
640
641	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
642	{
643	/* No polling on OS/2 */
644	NOREF(pDevExt);
645	}
646
647
648	#ifdef DEBUG_READ /** @todo figure out this one once and for all... */
649
650	/**
651	* Callback for writing to the log buffer.
652	*
653	* @returns number of bytes written.
654	* @param pvArg Unused.
655	* @param pachChars Pointer to an array of utf-8 characters.
656	* @param cbChars Number of bytes in the character array pointed to by pachChars.
657	*/
658	static DECLCALLBACK(size_t) vboxGuestNativeLogOutput(void pvArg, const char pachChars, size_t cbChars)
659	{
660	size_t cchWritten = 0;
661	while (cbChars-- > 0)
662	{
663	const uint16_t offLogHead = g_offLogHead;
664	const uint16_t offLogHeadNext = (offLogHead + 1) & (g_cchLogMax - 1);
665	if (offLogHeadNext == g_offLogTail)
666	break; /* no */
667	g_szLog[offLogHead] = *pachChars++;
668	g_offLogHead = offLogHeadNext;
669	cchWritten++;
670	}
671	return cchWritten;
672	}
673
674
675	int SUPR0Printf(const char *pszFormat, ...)
676	{
677	va_list va;
678
679	#if 0 //def DEBUG_bird
680	va_start(va, pszFormat);
681	RTLogComPrintfV(pszFormat, va);
682	va_end(va);
683	#endif
684
685	va_start(va, pszFormat);
686	int cch = RTLogFormatV(vboxGuestNativeLogOutput, NULL, pszFormat, va);
687	va_end(va);
688
689	return cch;
690	}
691
692	#endif /* DEBUG_READ */
693

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-os2.cpp@ 58089

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