VBoxGuest-os2.cpp@ 83563

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1	/* $Id: VBoxGuest-os2.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* VBoxGuest - OS/2 specifics.
4	*/
5
6	/*
7	* Copyright (C) 2007-2020 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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	* ---------------------------------------------------------------------------
26	* This code is based on:
27	*
28	* VBoxDrv - OS/2 specifics.
29	*
30	* Copyright (c) 2007-2012 knut st. osmundsen <bird-src-spam@anduin.net>
31	*
32	* Permission is hereby granted, free of charge, to any person
33	* obtaining a copy of this software and associated documentation
34	* files (the "Software"), to deal in the Software without
35	* restriction, including without limitation the rights to use,
36	* copy, modify, merge, publish, distribute, sublicense, and/or sell
37	* copies of the Software, and to permit persons to whom the
38	* Software is furnished to do so, subject to the following
39	* conditions:
40	*
41	* The above copyright notice and this permission notice shall be
42	* included in all copies or substantial portions of the Software.
43	*
44	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
45	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
46	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
47	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
48	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
49	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
50	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
51	* OTHER DEALINGS IN THE SOFTWARE.
52	*/
53
54
55	/*********************************************************************************************************************************
56	* Header Files *
57	*********************************************************************************************************************************/
58	#include <os2ddk/bsekee.h>
59
60	#include "VBoxGuestInternal.h"
61	#include <VBox/version.h>
62	#include <iprt/assert.h>
63	#include <iprt/err.h>
64	#include <iprt/initterm.h>
65	#include <iprt/log.h>
66	#include <iprt/memobj.h>
67	#include <iprt/mem.h>
68	#include <iprt/param.h>
69	#include <iprt/process.h>
70	#include <iprt/spinlock.h>
71	#include <iprt/string.h>
72
73
74	/*********************************************************************************************************************************
75	* Global Variables *
76	*********************************************************************************************************************************/
77	/**
78	* Device extention & session data association structure.
79	*/
80	static VBOXGUESTDEVEXT g_DevExt;
81	/** The memory object for the MMIO memory. */
82	static RTR0MEMOBJ g_MemObjMMIO = NIL_RTR0MEMOBJ;
83	/** The memory mapping object the MMIO memory. */
84	static RTR0MEMOBJ g_MemMapMMIO = NIL_RTR0MEMOBJ;
85
86	/** Spinlock protecting g_apSessionHashTab. */
87	static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
88	/** Hash table */
89	static PVBOXGUESTSESSION g_apSessionHashTab[19];
90	/** Calculates the index into g_apSessionHashTab.*/
91	#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab))
92
93	RT_C_DECLS_BEGIN
94	/* Defined in VBoxGuestA-os2.asm */
95	extern uint32_t g_PhysMMIOBase;
96	extern uint32_t g_cbMMIO; /* 0 currently not set. */
97	extern uint16_t g_IOPortBase;
98	extern uint8_t g_bInterruptLine;
99	extern uint8_t g_bPciBusNo;
100	extern uint8_t g_bPciDevFunNo;
101	extern RTFAR16 g_fpfnVBoxGuestOs2IDCService16;
102	extern RTFAR16 g_fpfnVBoxGuestOs2IDCService16Asm;
103	#ifdef DEBUG_READ
104	/* (debugging) */
105	extern uint16_t g_offLogHead;
106	extern uint16_t volatile g_offLogTail;
107	extern uint16_t const g_cchLogMax;
108	extern char g_szLog[];
109	#endif
110	/* (init only:) */
111	extern char g_szInitText[];
112	extern uint16_t g_cchInitText;
113	extern uint16_t g_cchInitTextMax;
114	RT_C_DECLS_END
115
116
117	/*********************************************************************************************************************************
118	* Internal Functions *
119	*********************************************************************************************************************************/
120	static int vgdrvOS2MapMemory(void);
121	static VBOXOSTYPE vgdrvOS2DetectVersion(void);
122
123	/* in VBoxGuestA-os2.asm */
124	DECLASM(int) vgdrvOS2DevHlpSetIRQ(uint8_t bIRQ);
125
126
127	/**
128	* 32-bit Ring-0 initialization.
129	*
130	* This is called from VBoxGuestA-os2.asm upon the first open call to the vboxgst$ device.
131	*
132	* @returns 0 on success, non-zero on failure.
133	* @param pszArgs Pointer to the device arguments.
134	*/
135	DECLASM(int) vgdrvOS2Init(const char *pszArgs)
136	{
137	//Log(("vgdrvOS2Init: pszArgs='%s' MMIO=0x%RX32 IOPort=0x%RX16 Int=%#x Bus=%#x Dev=%#x Fun=%d\n",
138	// pszArgs, g_PhysMMIOBase, g_IOPortBase, g_bInterruptLine, g_bPciBusNo, g_bPciDevFunNo >> 3, g_bPciDevFunNo & 7));
139
140	/*
141	* Initialize the runtime.
142	*/
143	int rc = RTR0Init(0);
144	if (RT_SUCCESS(rc))
145	{
146	/*
147	* Process the command line.
148	*/
149	bool fVerbose = true;
150	if (pszArgs)
151	{
152	char ch;
153	while ((ch = *pszArgs++) != '\0')
154	if (ch == '-' \|\| ch == '/')
155	{
156	ch = *pszArgs++;
157	if (ch == 'Q' \|\| ch == 'q')
158	fVerbose = false;
159	else if (ch == 'V' \|\| ch == 'v')
160	fVerbose = true;
161	else if (ch == '\0')
162	break;
163	/else: ignore stuff we don't know what is /
164	}
165	/* else: skip spaces and unknown stuff */
166	}
167
168	/*
169	* Map the MMIO memory if found.
170	*/
171	rc = vgdrvOS2MapMemory();
172	if (RT_SUCCESS(rc))
173	{
174	/*
175	* Initialize the device extension.
176	*/
177	if (g_MemMapMMIO != NIL_RTR0MEMOBJ)
178	rc = VGDrvCommonInitDevExt(&g_DevExt, g_IOPortBase,
179	RTR0MemObjAddress(g_MemMapMMIO),
180	RTR0MemObjSize(g_MemMapMMIO),
181	vgdrvOS2DetectVersion(),
182	0);
183	else
184	rc = VGDrvCommonInitDevExt(&g_DevExt, g_IOPortBase, NULL, 0, vgdrvOS2DetectVersion(), 0);
185	if (RT_SUCCESS(rc))
186	{
187	/*
188	* Initialize the session hash table.
189	*/
190	rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxGuestOS2");
191	if (RT_SUCCESS(rc))
192	{
193	/*
194	* Configure the interrupt handler.
195	*/
196	if (g_bInterruptLine)
197	{
198	rc = vgdrvOS2DevHlpSetIRQ(g_bInterruptLine);
199	if (rc)
200	{
201	Log(("vgdrvOS2DevHlpSetIRQ(%d) -> %d\n", g_bInterruptLine, rc));
202	rc = RTErrConvertFromOS2(rc);
203	}
204	}
205	if (RT_SUCCESS(rc))
206	{
207	/*
208	* Read host configuration.
209	*/
210	VGDrvCommonProcessOptionsFromHost(&g_DevExt);
211
212	/*
213	* Success
214	*/
215	if (fVerbose)
216	{
217	strcpy(&g_szInitText[0],
218	"\r\n"
219	"VirtualBox Guest Additions Driver for OS/2 version " VBOX_VERSION_STRING "\r\n"
220	"Copyright (C) 2008-" VBOX_C_YEAR " " VBOX_VENDOR "\r\n");
221	g_cchInitText = strlen(&g_szInitText[0]);
222	}
223	Log(("vgdrvOS2Init: Successfully loaded\n%s", g_szInitText));
224	return VINF_SUCCESS;
225	}
226
227	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: SetIrq failed for IRQ %#d, rc=%Rrc\n",
228	g_bInterruptLine, rc);
229	}
230	else
231	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: RTSpinlockCreate failed, rc=%Rrc\n", rc);
232	VGDrvCommonDeleteDevExt(&g_DevExt);
233	}
234	else
235	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: vgdrvOS2InitDevExt failed, rc=%Rrc\n", rc);
236
237	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
238	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
239	}
240	else
241	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: VBoxGuestOS2MapMMIO failed, rc=%Rrc\n", rc);
242	RTR0Term();
243	}
244	else
245	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: RTR0Init failed, rc=%Rrc\n", rc);
246
247	RTLogBackdoorPrintf("vgdrvOS2Init: failed rc=%Rrc - %s", rc, &g_szInitText[0]);
248	return rc;
249	}
250
251
252	/**
253	* Maps the VMMDev memory.
254	*
255	* @returns VBox status code.
256	* @retval VERR_VERSION_MISMATCH The VMMDev memory didn't meet our expectations.
257	*/
258	static int vgdrvOS2MapMemory(void)
259	{
260	const RTCCPHYS PhysMMIOBase = g_PhysMMIOBase;
261
262	/*
263	* Did we find any MMIO region (0 or NIL)?
264	*/
265	if ( !PhysMMIOBase
266	\|\| PhysMMIOBase == NIL_RTCCPHYS)
267	{
268	Assert(g_MemMapMMIO != NIL_RTR0MEMOBJ);
269	return VINF_SUCCESS;
270	}
271
272	/*
273	* Create a physical memory object for it.
274	*
275	* Since we don't know the actual size (OS/2 doesn't at least), we make
276	* a qualified guess using the VMMDEV_RAM_SIZE.
277	*/
278	size_t cb = RT_ALIGN_Z(VMMDEV_RAM_SIZE, PAGE_SIZE);
279	int rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
280	if (RT_FAILURE(rc))
281	{
282	cb = _4K;
283	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
284	}
285	if (RT_FAILURE(rc))
286	{
287	Log(("vgdrvOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc\n", PhysMMIOBase, cb, rc));
288	return rc;
289	}
290
291	/*
292	* Map the object into kernel space.
293	*
294	* We want a normal mapping with normal caching, which good in two ways. First
295	* since the API doesn't have any flags indicating how the mapping should be cached.
296	* And second, because PGM doesn't necessarily respect the cache/writethru bits
297	* anyway for normal RAM.
298	*/
299	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0, RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
300	if (RT_SUCCESS(rc))
301	{
302	/*
303	* Validate the VMM memory.
304	*/
305	VMMDevMemory pVMMDev = (VMMDevMemory )RTR0MemObjAddress(g_MemMapMMIO);
306	Assert(pVMMDev);
307	if ( pVMMDev->u32Version == VMMDEV_MEMORY_VERSION
308	&& pVMMDev->u32Size >= 32 /* just for checking sanity */)
309	{
310	/*
311	* Did we hit the correct size? If not we'll have to
312	* redo the mapping using the correct size.
313	*/
314	if (RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE) == cb)
315	return VINF_SUCCESS;
316
317	Log(("vgdrvOS2MapMemory: Actual size %#RX32 (tried %#zx)\n", pVMMDev->u32Size, cb));
318	cb = RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE);
319
320	rc = RTR0MemObjFree(g_MemObjMMIO, true); AssertRC(rc);
321	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
322
323	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
324	if (RT_SUCCESS(rc))
325	{
326	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0, RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
327	if (RT_SUCCESS(rc))
328	return VINF_SUCCESS;
329
330	Log(("vgdrvOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc (2nd)\n", PhysMMIOBase, cb, rc));
331	}
332	else
333	Log(("vgdrvOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc (2nd)\n", PhysMMIOBase, cb, rc));
334	}
335	else
336	{
337	rc = VERR_VERSION_MISMATCH;
338	LogRel(("vgdrvOS2MapMemory: Bogus VMMDev memory; u32Version=%RX32 (expected %RX32) u32Size=%RX32\n",
339	pVMMDev->u32Version, VMMDEV_MEMORY_VERSION, pVMMDev->u32Size));
340	}
341	}
342	else
343	Log(("vgdrvOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc\n", PhysMMIOBase, cb, rc));
344
345	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
346	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
347	return rc;
348	}
349
350
351	/**
352	* Called fromn vgdrvOS2Init to determine which OS/2 version this is.
353	*
354	* @returns VBox OS/2 type.
355	*/
356	static VBOXOSTYPE vgdrvOS2DetectVersion(void)
357	{
358	VBOXOSTYPE enmOSType = VBOXOSTYPE_OS2;
359
360	#if 0 /** @todo dig up the version stuff from GIS later and verify that the numbers are actually decimal. */
361	unsigned uMajor, uMinor;
362	if (uMajor == 2)
363	{
364	if (uMinor >= 30 && uMinor < 40)
365	enmOSType = VBOXOSTYPE_OS2Warp3;
366	else if (uMinor >= 40 && uMinor < 45)
367	enmOSType = VBOXOSTYPE_OS2Warp4;
368	else if (uMinor >= 45 && uMinor < 50)
369	enmOSType = VBOXOSTYPE_OS2Warp45;
370	}
371	#endif
372	return enmOSType;
373	}
374
375
376	DECLASM(int) vgdrvOS2Open(uint16_t sfn)
377	{
378	int rc;
379	PVBOXGUESTSESSION pSession;
380
381	/*
382	* Create a new session.
383	*/
384	uint32_t fRequestor = VMMDEV_REQUESTOR_USERMODE
385	\| VMMDEV_REQUESTOR_TRUST_NOT_GIVEN
386	\| VMMDEV_REQUESTOR_USR_ROOT /* everyone is root on OS/2 */
387	\| VMMDEV_REQUESTOR_GRP_WHEEL /* and their admins */
388	\| VMMDEV_REQUESTOR_NO_USER_DEVICE /** @todo implement /dev/vboxuser? */
389	\| VMMDEV_REQUESTOR_CON_DONT_KNOW; /** @todo check screen group/whatever of process to see if console */
390	rc = VGDrvCommonCreateUserSession(&g_DevExt, fRequestor, &pSession);
391	if (RT_SUCCESS(rc))
392	{
393	pSession->sfn = sfn;
394
395	/*
396	* Insert it into the hash table.
397	*/
398	unsigned iHash = SESSION_HASH(sfn);
399	RTSpinlockAcquire(g_Spinlock);
400	pSession->pNextHash = g_apSessionHashTab[iHash];
401	g_apSessionHashTab[iHash] = pSession;
402	RTSpinlockRelease(g_Spinlock);
403	}
404
405	Log(("vgdrvOS2Open: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, (int)RTProcSelf()));
406	return rc;
407	}
408
409
410	DECLASM(int) vgdrvOS2Close(uint16_t sfn)
411	{
412	Log(("vgdrvOS2Close: pid=%d sfn=%d\n", (int)RTProcSelf(), sfn));
413
414	/*
415	* Remove from the hash table.
416	*/
417	PVBOXGUESTSESSION pSession;
418	const RTPROCESS Process = RTProcSelf();
419	const unsigned iHash = SESSION_HASH(sfn);
420	RTSpinlockAcquire(g_Spinlock);
421
422	pSession = g_apSessionHashTab[iHash];
423	if (pSession)
424	{
425	if ( pSession->sfn == sfn
426	&& pSession->Process == Process)
427	{
428	g_apSessionHashTab[iHash] = pSession->pNextHash;
429	pSession->pNextHash = NULL;
430	}
431	else
432	{
433	PVBOXGUESTSESSION pPrev = pSession;
434	pSession = pSession->pNextHash;
435	while (pSession)
436	{
437	if ( pSession->sfn == sfn
438	&& pSession->Process == Process)
439	{
440	pPrev->pNextHash = pSession->pNextHash;
441	pSession->pNextHash = NULL;
442	break;
443	}
444
445	/* next */
446	pPrev = pSession;
447	pSession = pSession->pNextHash;
448	}
449	}
450	}
451	RTSpinlockRelease(g_Spinlock);
452	if (!pSession)
453	{
454	Log(("VBoxGuestIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d sfn=%d\n", (int)Process, sfn));
455	return VERR_INVALID_PARAMETER;
456	}
457
458	/*
459	* Close the session.
460	*/
461	VGDrvCommonCloseSession(&g_DevExt, pSession);
462	return 0;
463	}
464
465
466	DECLASM(int) vgdrvOS2IOCtlFast(uint16_t sfn, uint8_t iFunction, int32_t *prc)
467	{
468	/*
469	* Find the session.
470	*/
471	const RTPROCESS Process = RTProcSelf();
472	const unsigned iHash = SESSION_HASH(sfn);
473	PVBOXGUESTSESSION pSession;
474
475	RTSpinlockAcquire(g_Spinlock);
476	pSession = g_apSessionHashTab[iHash];
477	if (pSession && pSession->Process != Process)
478	{
479	do pSession = pSession->pNextHash;
480	while ( pSession
481	&& ( pSession->sfn != sfn
482	\|\| pSession->Process != Process));
483	}
484	RTSpinlockRelease(g_Spinlock);
485	if (RT_UNLIKELY(!pSession))
486	{
487	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
488	return VERR_INVALID_PARAMETER;
489	}
490
491	/*
492	* Dispatch the fast IOCtl.
493	*/
494	*prc = VGDrvCommonIoCtlFast(iFunction, &g_DevExt, pSession);
495	return 0;
496	}
497
498
499	/**
500	* 32-bit IDC service routine.
501	*
502	* @returns VBox status code.
503	* @param u32Session The session handle (PVBOXGUESTSESSION).
504	* @param iFunction The requested function.
505	* @param pReqHdr The input/output data buffer. The caller
506	* ensures that this cannot be swapped out, or that
507	* it's acceptable to take a page in fault in the
508	* current context. If the request doesn't take
509	* input or produces output, apssing NULL is okay.
510	* @param cbReq The size of the data buffer.
511	*
512	* @remark This is called from the 16-bit thunker as well as directly from the 32-bit clients.
513	*/
514	DECLASM(int) VGDrvOS2IDCService(uint32_t u32Session, unsigned iFunction, PVBGLREQHDR pReqHdr, size_t cbReq)
515	{
516	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)u32Session;
517	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
518	AssertMsgReturn(pSession->sfn == 0xffff, ("%RX16\n", pSession->sfn), VERR_INVALID_HANDLE);
519	AssertMsgReturn(pSession->pDevExt == &g_DevExt, ("%p != %p\n", pSession->pDevExt, &g_DevExt), VERR_INVALID_HANDLE);
520
521	return VGDrvCommonIoCtl(iFunction, &g_DevExt, pSession, pReqHdr, cbReq);
522	}
523
524
525	/**
526	* Worker for VBoxGuestOS2IDC, it creates the kernel session.
527	*
528	* @returns Pointer to the session.
529	*/
530	DECLASM(PVBOXGUESTSESSION) vgdrvOS2IDCConnect(void)
531	{
532	PVBOXGUESTSESSION pSession;
533	int rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
534	if (RT_SUCCESS(rc))
535	{
536	pSession->sfn = 0xffff;
537	return pSession;
538	}
539	return NULL;
540	}
541
542
543	DECLASM(int) vgdrvOS2IOCtl(uint16_t sfn, uint8_t iCat, uint8_t iFunction, void pvParm, void pvData,
544	uint16_t pcbParm, uint16_t pcbData)
545	{
546	/*
547	* Find the session.
548	*/
549	const RTPROCESS Process = RTProcSelf();
550	const unsigned iHash = SESSION_HASH(sfn);
551	PVBOXGUESTSESSION pSession;
552
553	RTSpinlockAcquire(g_Spinlock);
554	pSession = g_apSessionHashTab[iHash];
555	if (pSession && pSession->Process != Process)
556	{
557	do pSession = pSession->pNextHash;
558	while ( pSession
559	&& ( pSession->sfn != sfn
560	\|\| pSession->Process != Process));
561	}
562	RTSpinlockRelease(g_Spinlock);
563	if (!pSession)
564	{
565	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
566	return VERR_INVALID_PARAMETER;
567	}
568
569	/*
570	* Verify the category and dispatch the IOCtl.
571	*
572	* The IOCtl call uses the parameter buffer as generic data input/output
573	* buffer similar to the one unix ioctl buffer argument. While the data
574	* buffer is not used.
575	*/
576	if (RT_LIKELY(iCat == VBGL_IOCTL_CATEGORY))
577	{
578	Log(("vgdrvOS2IOCtl: pSession=%p iFunction=%#x pvParm=%p pvData=%p pcbParm=%d pcbData=%d\n", pSession, iFunction, pvParm, pvData, pcbParm, pcbData));
579	if ( pvParm
580	&& *pcbParm >= sizeof(VBGLREQHDR)
581	&& *pcbData == 0)
582	{
583	/*
584	* Lock the buffer.
585	*/
586	KernVMLock_t ParmLock;
587	int32_t rc = KernVMLock(VMDHL_WRITE, pvParm, pcbParm, &ParmLock, (KernPageList_t )-1, NULL);
588	if (rc == 0)
589	{
590	/*
591	* Process the IOCtl.
592	*/
593	PVBGLREQHDR pReqHdr = (PVBGLREQHDR)pvParm;
594	rc = VGDrvCommonIoCtl(iFunction, &g_DevExt, pSession, pReqHdr, *pcbParm);
595
596	/*
597	* Unlock the buffer.
598	*/
599	pcbParm = RT_SUCCESS(rc) ? pReqHdr->cbOut : sizeof(pReqHdr);
600	int rc2 = KernVMUnlock(&ParmLock);
601	AssertMsg(rc2 == 0, ("rc2=%d\n", rc2)); NOREF(rc2);
602
603	Log2(("vgdrvOS2IOCtl: returns %d\n", rc));
604	return rc;
605	}
606	AssertMsgFailed(("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pvParm, *pcbParm, &ParmLock, rc));
607	return VERR_LOCK_FAILED;
608	}
609	Log2(("vgdrvOS2IOCtl: returns VERR_INVALID_PARAMETER (iFunction=%#x)\n", iFunction));
610	return VERR_INVALID_PARAMETER;
611	}
612	return VERR_NOT_SUPPORTED;
613	}
614
615
616	/**
617	* 32-bit ISR, called by 16-bit assembly thunker in VBoxGuestA-os2.asm.
618	*
619	* @returns true if it's our interrupt, false it isn't.
620	*/
621	DECLASM(bool) vgdrvOS2ISR(void)
622	{
623	Log(("vgdrvOS2ISR\n"));
624
625	return VGDrvCommonISR(&g_DevExt);
626	}
627
628
629	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
630	{
631	/* No polling on OS/2 */
632	NOREF(pDevExt);
633	}
634
635
636	bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char pszName, const char pszValue)
637	{
638	RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue);
639	return false;
640	}
641
642
643	#ifdef DEBUG_READ /** @todo figure out this one once and for all... */
644
645	/**
646	* Callback for writing to the log buffer.
647	*
648	* @returns number of bytes written.
649	* @param pvArg Unused.
650	* @param pachChars Pointer to an array of utf-8 characters.
651	* @param cbChars Number of bytes in the character array pointed to by pachChars.
652	*/
653	static DECLCALLBACK(size_t) vgdrvOS2LogOutput(void pvArg, const char pachChars, size_t cbChars)
654	{
655	size_t cchWritten = 0;
656	while (cbChars-- > 0)
657	{
658	const uint16_t offLogHead = g_offLogHead;
659	const uint16_t offLogHeadNext = (offLogHead + 1) & (g_cchLogMax - 1);
660	if (offLogHeadNext == g_offLogTail)
661	break; /* no */
662	g_szLog[offLogHead] = *pachChars++;
663	g_offLogHead = offLogHeadNext;
664	cchWritten++;
665	}
666	return cchWritten;
667	}
668
669
670	int SUPR0Printf(const char *pszFormat, ...)
671	{
672	va_list va;
673
674	#if 0 //def DEBUG_bird
675	va_start(va, pszFormat);
676	RTLogComPrintfV(pszFormat, va);
677	va_end(va);
678	#endif
679
680	va_start(va, pszFormat);
681	int cch = RTLogFormatV(vgdrvOS2LogOutput, NULL, pszFormat, va);
682	va_end(va);
683
684	return cch;
685	}
686
687	#endif /* DEBUG_READ */
688

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-os2.cpp@ 83563

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