VBoxGuest-os2.cpp@ 56335

Last change on this file since 56335 was 54608, checked in by vboxsync, 10 years ago
VBoxGuest: cleanups, mainly fixing and shortening function name prefixes.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
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1	/* $Id: VBoxGuest-os2.cpp 54608 2015-03-03 20:28:01Z 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.virtualbox.org. 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 = VbgdCommonInitDevExt(&g_DevExt, g_IOPortBase,
153	RTR0MemObjAddress(g_MemMapMMIO),
154	RTR0MemObjSize(g_MemMapMMIO),
155	vboxGuestOS2DetectVersion(),
156	0);
157	else
158	rc = VbgdCommonInitDevExt(&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	VbgdCommonDeleteDevExt(&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	* @param pDevExt The device extension.
228	*/
229	static int vboxGuestOS2MapMemory(void)
230	{
231	const RTCCPHYS PhysMMIOBase = g_PhysMMIOBase;
232
233	/*
234	* Did we find any MMIO region (0 or NIL)?
235	*/
236	if ( !PhysMMIOBase
237	\|\| PhysMMIOBase == NIL_RTCCPHYS)
238	{
239	Assert(g_MemMapMMIO != NIL_RTR0MEMOBJ);
240	return VINF_SUCCESS;
241	}
242
243	/*
244	* Create a physical memory object for it.
245	*
246	* Since we don't know the actual size (OS/2 doesn't at least), we make
247	* a qualified guess using the VMMDEV_RAM_SIZE.
248	*/
249	size_t cb = RT_ALIGN_Z(VMMDEV_RAM_SIZE, PAGE_SIZE);
250	int rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
251	if (RT_FAILURE(rc))
252	{
253	cb = _4K;
254	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
255	}
256	if (RT_FAILURE(rc))
257	{
258	Log(("vboxGuestOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc\n",
259	PhysMMIOBase, cb, rc));
260	return rc;
261	}
262
263	/*
264	* Map the object into kernel space.
265	*
266	* We want a normal mapping with normal caching, which good in two ways. First
267	* since the API doesn't have any flags indicating how the mapping should be cached.
268	* And second, because PGM doesn't necessarily respect the cache/writethru bits
269	* anyway for normal RAM.
270	*/
271	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0,
272	RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
273	if (RT_SUCCESS(rc))
274	{
275	/*
276	* Validate the VMM memory.
277	*/
278	VMMDevMemory pVMMDev = (VMMDevMemory )RTR0MemObjAddress(g_MemMapMMIO);
279	Assert(pVMMDev);
280	if ( pVMMDev->u32Version == VMMDEV_MEMORY_VERSION
281	&& pVMMDev->u32Size >= 32 /* just for checking sanity */)
282	{
283	/*
284	* Did we hit the correct size? If not we'll have to
285	* redo the mapping using the correct size.
286	*/
287	if (RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE) == cb)
288	return VINF_SUCCESS;
289
290	Log(("vboxGuestOS2MapMemory: Actual size %#RX32 (tried %#zx)\n", pVMMDev->u32Size, cb));
291	cb = RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE);
292
293	rc = RTR0MemObjFree(g_MemObjMMIO, true); AssertRC(rc);
294	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
295
296	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
297	if (RT_SUCCESS(rc))
298	{
299	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0,
300	RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
301	if (RT_SUCCESS(rc))
302	return VINF_SUCCESS;
303
304	Log(("vboxGuestOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc (2nd)\n",
305	PhysMMIOBase, cb, rc));
306	}
307	else
308	Log(("vboxGuestOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc (2nd)\n",
309	PhysMMIOBase, cb, rc));
310	}
311	else
312	{
313	rc = VERR_VERSION_MISMATCH;
314	LogRel(("vboxGuestOS2MapMemory: Bogus VMMDev memory; u32Version=%RX32 (expected %RX32) u32Size=%RX32\n",
315	pVMMDev->u32Version, VMMDEV_MEMORY_VERSION, pVMMDev->u32Size));
316	}
317	}
318	else
319	Log(("vboxGuestOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc\n",
320	PhysMMIOBase, cb, rc));
321
322	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
323	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
324	return rc;
325	}
326
327
328	/**
329	* Called fromn VBoxGuestOS2Init to determine which OS/2 version this is.
330	*
331	* @returns VBox OS/2 type.
332	*/
333	static VBOXOSTYPE vboxGuestOS2DetectVersion(void)
334	{
335	VBOXOSTYPE enmOSType = VBOXOSTYPE_OS2;
336
337	#if 0 /** @todo dig up the version stuff from GIS later and verify that the numbers are actually decimal. */
338	unsigned uMajor, uMinor;
339	if (uMajor == 2)
340	{
341	if (uMinor >= 30 && uMinor < 40)
342	enmOSType = VBOXOSTYPE_OS2Warp3;
343	else if (uMinor >= 40 && uMinor < 45)
344	enmOSType = VBOXOSTYPE_OS2Warp4;
345	else if (uMinor >= 45 && uMinor < 50)
346	enmOSType = VBOXOSTYPE_OS2Warp45;
347	}
348	#endif
349	return enmOSType;
350	}
351
352
353	DECLASM(int) VBoxGuestOS2Open(uint16_t sfn)
354	{
355	int rc;
356	PVBOXGUESTSESSION pSession;
357
358	/*
359	* Create a new session.
360	*/
361	rc = VbgdCommonCreateUserSession(&g_DevExt, &pSession);
362	if (RT_SUCCESS(rc))
363	{
364	pSession->sfn = sfn;
365
366	/*
367	* Insert it into the hash table.
368	*/
369	unsigned iHash = SESSION_HASH(sfn);
370	RTSpinlockAcquire(g_Spinlock);
371	pSession->pNextHash = g_apSessionHashTab[iHash];
372	g_apSessionHashTab[iHash] = pSession;
373	RTSpinlockRelease(g_Spinlock);
374	}
375
376	Log(("VBoxGuestOS2Open: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, (int)RTProcSelf()));
377	return rc;
378	}
379
380
381	DECLASM(int) VBoxGuestOS2Close(uint16_t sfn)
382	{
383	Log(("VBoxGuestOS2Close: pid=%d sfn=%d\n", (int)RTProcSelf(), sfn));
384
385	/*
386	* Remove from the hash table.
387	*/
388	PVBOXGUESTSESSION pSession;
389	const RTPROCESS Process = RTProcSelf();
390	const unsigned iHash = SESSION_HASH(sfn);
391	RTSpinlockAcquire(g_Spinlock);
392
393	pSession = g_apSessionHashTab[iHash];
394	if (pSession)
395	{
396	if ( pSession->sfn == sfn
397	&& pSession->Process == Process)
398	{
399	g_apSessionHashTab[iHash] = pSession->pNextHash;
400	pSession->pNextHash = NULL;
401	}
402	else
403	{
404	PVBOXGUESTSESSION pPrev = pSession;
405	pSession = pSession->pNextHash;
406	while (pSession)
407	{
408	if ( pSession->sfn == sfn
409	&& pSession->Process == Process)
410	{
411	pPrev->pNextHash = pSession->pNextHash;
412	pSession->pNextHash = NULL;
413	break;
414	}
415
416	/* next */
417	pPrev = pSession;
418	pSession = pSession->pNextHash;
419	}
420	}
421	}
422	RTSpinlockRelease(g_Spinlock);
423	if (!pSession)
424	{
425	Log(("VBoxGuestIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d sfn=%d\n", (int)Process, sfn));
426	return VERR_INVALID_PARAMETER;
427	}
428
429	/*
430	* Close the session.
431	*/
432	VbgdCommonCloseSession(&g_DevExt, pSession);
433	return 0;
434	}
435
436
437	DECLASM(int) VBoxGuestOS2IOCtlFast(uint16_t sfn, uint8_t iFunction, int32_t *prc)
438	{
439	/*
440	* Find the session.
441	*/
442	const RTPROCESS Process = RTProcSelf();
443	const unsigned iHash = SESSION_HASH(sfn);
444	PVBOXGUESTSESSION pSession;
445
446	RTSpinlockAcquire(g_Spinlock);
447	pSession = g_apSessionHashTab[iHash];
448	if (pSession && pSession->Process != Process)
449	{
450	do pSession = pSession->pNextHash;
451	while ( pSession
452	&& ( pSession->sfn != sfn
453	\|\| pSession->Process != Process));
454	}
455	RTSpinlockRelease(g_Spinlock);
456	if (RT_UNLIKELY(!pSession))
457	{
458	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
459	return VERR_INVALID_PARAMETER;
460	}
461
462	/*
463	* Dispatch the fast IOCtl.
464	*/
465	*prc = VbgdCommonIoCtlFast(iFunction, &g_DevExt, pSession);
466	return 0;
467	}
468
469
470	/**
471	* 32-bit IDC service routine.
472	*
473	* @returns VBox status code.
474	* @param u32Session The session handle (PVBOXGUESTSESSION).
475	* @param iFunction The requested function.
476	* @param pvData The input/output data buffer. The caller ensures that this
477	* cannot be swapped out, or that it's acceptable to take a
478	* page in fault in the current context. If the request doesn't
479	* take input or produces output, apssing NULL is okay.
480	* @param cbData The size of the data buffer.
481	* @param pcbDataReturned Where to store the amount of data that's returned.
482	* This can be NULL if pvData is NULL.
483	*
484	* @remark This is called from the 16-bit thunker as well as directly from the 32-bit clients.
485	*/
486	DECLASM(int) VBoxGuestOS2IDCService(uint32_t u32Session, unsigned iFunction, void pvData, size_t cbData, size_t pcbDataReturned)
487	{
488	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)u32Session;
489	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
490	AssertMsgReturn(pSession->sfn == 0xffff, ("%RX16\n", pSession->sfn), VERR_INVALID_HANDLE);
491	AssertMsgReturn(pSession->pDevExt == &g_DevExt, ("%p != %p\n", pSession->pDevExt, &g_DevExt), VERR_INVALID_HANDLE);
492
493	int rc;
494	switch (iFunction)
495	{
496	default:
497	rc = VbgdCommonIoCtl(iFunction, &g_DevExt, pSession, pvData, cbData, pcbDataReturned);
498	break;
499
500	case VBOXGUEST_IOCTL_OS2_IDC_DISCONNECT:
501	pSession->sfn = 0;
502	VbgdCommonCloseSession(&g_DevExt, pSession);
503	rc = VINF_SUCCESS;
504	break;
505	}
506	return rc;
507	}
508
509
510	/**
511	* Worker for VBoxGuestOS2IDC, it creates the kernel session.
512	*
513	* @returns Pointer to the session.
514	*/
515	DECLASM(PVBOXGUESTSESSION) VBoxGuestOS2IDCConnect(void)
516	{
517	PVBOXGUESTSESSION pSession;
518	int rc = VbgdCommonCreateKernelSession(&g_DevExt, &pSession);
519	if (RT_SUCCESS(rc))
520	{
521	pSession->sfn = 0xffff;
522	return pSession;
523	}
524	return NULL;
525	}
526
527
528	DECLASM(int) VBoxGuestOS2IOCtl(uint16_t sfn, uint8_t iCat, uint8_t iFunction, void pvParm, void pvData, uint16_t pcbParm, uint16_t pcbData)
529	{
530	/*
531	* Find the session.
532	*/
533	const RTPROCESS Process = RTProcSelf();
534	const unsigned iHash = SESSION_HASH(sfn);
535	PVBOXGUESTSESSION pSession;
536
537	RTSpinlockAcquire(g_Spinlock);
538	pSession = g_apSessionHashTab[iHash];
539	if (pSession && pSession->Process != Process)
540	{
541	do pSession = pSession->pNextHash;
542	while ( pSession
543	&& ( pSession->sfn != sfn
544	\|\| pSession->Process != Process));
545	}
546	RTSpinlockRelease(g_Spinlock);
547	if (!pSession)
548	{
549	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
550	return VERR_INVALID_PARAMETER;
551	}
552
553	/*
554	* Verify the category and dispatch the IOCtl.
555	*
556	* The IOCtl call uses the parameter buffer as generic data input/output
557	* buffer similar to the one unix ioctl buffer argument. While the data
558	* buffer is used for passing the VBox status code back to the caller
559	* since the status codes that OS/2 accepts thru the DosDevIOCtl API is
560	* severely restricted.
561	*/
562	if (RT_LIKELY(iCat == VBOXGUEST_IOCTL_CATEGORY))
563	{
564	Log(("VBoxGuestOS2IOCtl: pSession=%p iFunction=%#x pvParm=%p pvData=%p pcbParm=%d pcbData=%d\n", pSession, iFunction, pvParm, pvData, pcbParm, pcbData));
565	Assert(pvParm \|\| !*pcbData);
566	Assert(pvData);
567	Assert(pcbData == sizeof(int32_t)); / the return code */
568
569	/*
570	* Lock the buffers.
571	*/
572	int32_t rc;
573	KernVMLock_t ParmLock;
574	if (pvParm)
575	{
576	Assert(*pcbData);
577	rc = KernVMLock(VMDHL_WRITE, pvParm, pcbParm, &ParmLock, (KernPageList_t )-1, NULL);
578	AssertMsgReturn(!rc, ("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pvParm, *pcbParm, &ParmLock, rc), VERR_LOCK_FAILED);
579	}
580
581	#if 0 /* don't bother locking it since it's only 4 bytes (the return code). */
582	KernVMLock_t DataLock;
583	if (pvData)
584	{
585	Assert(*pcbData);
586	rc = KernVMLock(VMDHL_WRITE, pvData, pcbData, &DataLock, (KernPageList_t )-1, NULL);
587	if (rc)
588	{
589	AssertMsgFailed(("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pvData, *pcbData, &DataLock, rc));
590	KernVMUnlock(&ParmLock);
591	return VERR_LOCK_FAILED;
592	}
593	}
594	#endif
595
596	/*
597	* Process the IOCtl.
598	*/
599	size_t cbDataReturned;
600	rc = VbgdCommonIoCtl(iFunction, &g_DevExt, pSession, pvParm, *pcbParm, &cbDataReturned);
601
602	/*
603	* Unlock the buffers.
604	*/
605	if (pvParm)
606	{
607	int rc2 = KernVMUnlock(&ParmLock);
608	AssertMsg(!rc2, ("rc2=%d\n", rc2)); NOREF(rc2);
609	AssertMsg(cbDataReturned < _64K, ("cbDataReturned=%d\n", cbDataReturned));
610	*pcbParm = cbDataReturned;
611	}
612	#if 0
613	if (pvData)
614	{
615	int rc2 = KernVMUnlock(&DataLock);
616	AssertMsg(!rc2, ("rc2=%d\n", rc2));
617	}
618	#else
619	rc = KernCopyOut(pvData, &rc, sizeof(int32_t));
620	AssertMsgReturn(!rc, ("KernCopyOut(%p, %p, sizeof(int32_t)) -> %d\n", pvData, &rc, rc), VERR_LOCK_FAILED);
621	#endif
622
623	Log2(("VBoxGuestOS2IOCtl: returns VINF_SUCCESS / %d\n", rc));
624	return VINF_SUCCESS;
625	}
626	return VERR_NOT_SUPPORTED;
627	}
628
629
630	/**
631	* 32-bit ISR, called by 16-bit assembly thunker in VBoxGuestA-os2.asm.
632	*
633	* @returns true if it's our interrupt, false it isn't.
634	*/
635	DECLASM(bool) VBoxGuestOS2ISR(void)
636	{
637	Log(("VBoxGuestOS2ISR\n"));
638
639	return VbgdCommonISR(&g_DevExt);
640	}
641
642
643	void VbgdNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
644	{
645	/* No polling on OS/2 */
646	NOREF(pDevExt);
647	}
648
649
650	#ifdef DEBUG_READ /** @todo figure out this one once and for all... */
651
652	/**
653	* Callback for writing to the log buffer.
654	*
655	* @returns number of bytes written.
656	* @param pvArg Unused.
657	* @param pachChars Pointer to an array of utf-8 characters.
658	* @param cbChars Number of bytes in the character array pointed to by pachChars.
659	*/
660	static DECLCALLBACK(size_t) vboxGuestNativeLogOutput(void pvArg, const char pachChars, size_t cbChars)
661	{
662	size_t cchWritten = 0;
663	while (cbChars-- > 0)
664	{
665	const uint16_t offLogHead = g_offLogHead;
666	const uint16_t offLogHeadNext = (offLogHead + 1) & (g_cchLogMax - 1);
667	if (offLogHeadNext == g_offLogTail)
668	break; /* no */
669	g_szLog[offLogHead] = *pachChars++;
670	g_offLogHead = offLogHeadNext;
671	cchWritten++;
672	}
673	return cchWritten;
674	}
675
676
677	int SUPR0Printf(const char *pszFormat, ...)
678	{
679	va_list va;
680
681	#if 0 //def DEBUG_bird
682	va_start(va, pszFormat);
683	RTLogComPrintfV(pszFormat, va);
684	va_end(va);
685	#endif
686
687	va_start(va, pszFormat);
688	int cch = RTLogFormatV(vboxGuestNativeLogOutput, NULL, pszFormat, va);
689	va_end(va);
690
691	return cch;
692	}
693
694	#endif /* DEBUG_READ */
695

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-os2.cpp@ 56335

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