VBoxGuest-os2.cpp@ 97828

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1	/* $Id: VBoxGuest-os2.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* VBoxGuest - OS/2 specifics.
4	*/
5
6	/*
7	* Copyright (C) 2007-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	* ---------------------------------------------------------------------------
36	* This code is based on:
37	*
38	* VBoxDrv - OS/2 specifics.
39	*
40	* Copyright (c) 2007-2012 knut st. osmundsen <[email protected]>
41	*
42	* Permission is hereby granted, free of charge, to any person
43	* obtaining a copy of this software and associated documentation
44	* files (the "Software"), to deal in the Software without
45	* restriction, including without limitation the rights to use,
46	* copy, modify, merge, publish, distribute, sublicense, and/or sell
47	* copies of the Software, and to permit persons to whom the
48	* Software is furnished to do so, subject to the following
49	* conditions:
50	*
51	* The above copyright notice and this permission notice shall be
52	* included in all copies or substantial portions of the Software.
53	*
54	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
55	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
56	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
57	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
58	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
59	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
60	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
61	* OTHER DEALINGS IN THE SOFTWARE.
62	*/
63
64
65	/*********************************************************************************************************************************
66	* Header Files *
67	*********************************************************************************************************************************/
68	#include <os2ddk/bsekee.h>
69
70	#include "VBoxGuestInternal.h"
71	#include <VBox/version.h>
72	#include <iprt/assert.h>
73	#include <iprt/err.h>
74	#include <iprt/initterm.h>
75	#include <iprt/log.h>
76	#include <iprt/memobj.h>
77	#include <iprt/mem.h>
78	#include <iprt/param.h>
79	#include <iprt/process.h>
80	#include <iprt/spinlock.h>
81	#include <iprt/string.h>
82
83
84	/*********************************************************************************************************************************
85	* Global Variables *
86	*********************************************************************************************************************************/
87	/**
88	* Device extention & session data association structure.
89	*/
90	static VBOXGUESTDEVEXT g_DevExt;
91	/** The memory object for the MMIO memory. */
92	static RTR0MEMOBJ g_MemObjMMIO = NIL_RTR0MEMOBJ;
93	/** The memory mapping object the MMIO memory. */
94	static RTR0MEMOBJ g_MemMapMMIO = NIL_RTR0MEMOBJ;
95
96	/** Spinlock protecting g_apSessionHashTab. */
97	static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
98	/** Hash table */
99	static PVBOXGUESTSESSION g_apSessionHashTab[19];
100	/** Calculates the index into g_apSessionHashTab.*/
101	#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab))
102
103	RT_C_DECLS_BEGIN
104	/* Defined in VBoxGuestA-os2.asm */
105	extern uint32_t g_PhysMMIOBase;
106	extern uint32_t g_cbMMIO; /* 0 currently not set. */
107	extern uint16_t g_IOPortBase;
108	extern uint8_t g_bInterruptLine;
109	extern uint8_t g_bPciBusNo;
110	extern uint8_t g_bPciDevFunNo;
111	extern RTFAR16 g_fpfnVBoxGuestOs2IDCService16;
112	extern RTFAR16 g_fpfnVBoxGuestOs2IDCService16Asm;
113	#ifdef DEBUG_READ
114	/* (debugging) */
115	extern uint16_t g_offLogHead;
116	extern uint16_t volatile g_offLogTail;
117	extern uint16_t const g_cchLogMax;
118	extern char g_szLog[];
119	#endif
120	/* (init only:) */
121	extern char g_szInitText[];
122	extern uint16_t g_cchInitText;
123	extern uint16_t g_cchInitTextMax;
124	RT_C_DECLS_END
125
126
127	/*********************************************************************************************************************************
128	* Internal Functions *
129	*********************************************************************************************************************************/
130	static int vgdrvOS2MapMemory(void);
131	static VBOXOSTYPE vgdrvOS2DetectVersion(void);
132
133	/* in VBoxGuestA-os2.asm */
134	DECLASM(int) vgdrvOS2DevHlpSetIRQ(uint8_t bIRQ);
135
136
137	/**
138	* 32-bit Ring-0 initialization.
139	*
140	* This is called from VBoxGuestA-os2.asm upon the first open call to the vboxgst$ device.
141	*
142	* @returns 0 on success, non-zero on failure.
143	* @param pszArgs Pointer to the device arguments.
144	*/
145	DECLASM(int) vgdrvOS2Init(const char *pszArgs)
146	{
147	//Log(("vgdrvOS2Init: pszArgs='%s' MMIO=0x%RX32 IOPort=0x%RX16 Int=%#x Bus=%#x Dev=%#x Fun=%d\n",
148	// pszArgs, g_PhysMMIOBase, g_IOPortBase, g_bInterruptLine, g_bPciBusNo, g_bPciDevFunNo >> 3, g_bPciDevFunNo & 7));
149
150	/*
151	* Initialize the runtime.
152	*/
153	int rc = RTR0Init(0);
154	if (RT_SUCCESS(rc))
155	{
156	/*
157	* Process the command line.
158	*/
159	bool fVerbose = true;
160	if (pszArgs)
161	{
162	char ch;
163	while ((ch = *pszArgs++) != '\0')
164	if (ch == '-' \|\| ch == '/')
165	{
166	ch = *pszArgs++;
167	if (ch == 'Q' \|\| ch == 'q')
168	fVerbose = false;
169	else if (ch == 'V' \|\| ch == 'v')
170	fVerbose = true;
171	else if (ch == '\0')
172	break;
173	/else: ignore stuff we don't know what is /
174	}
175	/* else: skip spaces and unknown stuff */
176	}
177
178	/*
179	* Map the MMIO memory if found.
180	*/
181	rc = vgdrvOS2MapMemory();
182	if (RT_SUCCESS(rc))
183	{
184	/*
185	* Initialize the device extension.
186	*/
187	if (g_MemMapMMIO != NIL_RTR0MEMOBJ)
188	rc = VGDrvCommonInitDevExt(&g_DevExt, g_IOPortBase,
189	RTR0MemObjAddress(g_MemMapMMIO),
190	RTR0MemObjSize(g_MemMapMMIO),
191	vgdrvOS2DetectVersion(),
192	0);
193	else
194	rc = VGDrvCommonInitDevExt(&g_DevExt, g_IOPortBase, NULL, 0, vgdrvOS2DetectVersion(), 0);
195	if (RT_SUCCESS(rc))
196	{
197	/*
198	* Initialize the session hash table.
199	*/
200	rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxGuestOS2");
201	if (RT_SUCCESS(rc))
202	{
203	/*
204	* Configure the interrupt handler.
205	*/
206	if (g_bInterruptLine)
207	{
208	rc = vgdrvOS2DevHlpSetIRQ(g_bInterruptLine);
209	if (rc)
210	{
211	Log(("vgdrvOS2DevHlpSetIRQ(%d) -> %d\n", g_bInterruptLine, rc));
212	rc = RTErrConvertFromOS2(rc);
213	}
214	}
215	if (RT_SUCCESS(rc))
216	{
217	/*
218	* Read host configuration.
219	*/
220	VGDrvCommonProcessOptionsFromHost(&g_DevExt);
221
222	/*
223	* Success
224	*/
225	if (fVerbose)
226	{
227	strcpy(&g_szInitText[0],
228	"\r\n"
229	"VirtualBox Guest Additions Driver for OS/2 version " VBOX_VERSION_STRING "\r\n"
230	"Copyright (C) 2008-" VBOX_C_YEAR " " VBOX_VENDOR "\r\n");
231	g_cchInitText = strlen(&g_szInitText[0]);
232	}
233	Log(("vgdrvOS2Init: Successfully loaded\n%s", g_szInitText));
234	return VINF_SUCCESS;
235	}
236
237	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: SetIrq failed for IRQ %#d, rc=%Rrc\n",
238	g_bInterruptLine, rc);
239	}
240	else
241	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: RTSpinlockCreate failed, rc=%Rrc\n", rc);
242	VGDrvCommonDeleteDevExt(&g_DevExt);
243	}
244	else
245	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: vgdrvOS2InitDevExt failed, rc=%Rrc\n", rc);
246
247	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
248	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
249	}
250	else
251	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: VBoxGuestOS2MapMMIO failed, rc=%Rrc\n", rc);
252	RTR0Term();
253	}
254	else
255	g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxGuest.sys: RTR0Init failed, rc=%Rrc\n", rc);
256
257	RTLogBackdoorPrintf("vgdrvOS2Init: failed rc=%Rrc - %s", rc, &g_szInitText[0]);
258	return rc;
259	}
260
261
262	/**
263	* Maps the VMMDev memory.
264	*
265	* @returns VBox status code.
266	* @retval VERR_VERSION_MISMATCH The VMMDev memory didn't meet our expectations.
267	*/
268	static int vgdrvOS2MapMemory(void)
269	{
270	const RTCCPHYS PhysMMIOBase = g_PhysMMIOBase;
271
272	/*
273	* Did we find any MMIO region (0 or NIL)?
274	*/
275	if ( !PhysMMIOBase
276	\|\| PhysMMIOBase == NIL_RTCCPHYS)
277	{
278	Assert(g_MemMapMMIO != NIL_RTR0MEMOBJ);
279	return VINF_SUCCESS;
280	}
281
282	/*
283	* Create a physical memory object for it.
284	*
285	* Since we don't know the actual size (OS/2 doesn't at least), we make
286	* a qualified guess using the VMMDEV_RAM_SIZE.
287	*/
288	size_t cb = RT_ALIGN_Z(VMMDEV_RAM_SIZE, PAGE_SIZE);
289	int rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
290	if (RT_FAILURE(rc))
291	{
292	cb = _4K;
293	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
294	}
295	if (RT_FAILURE(rc))
296	{
297	Log(("vgdrvOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc\n", PhysMMIOBase, cb, rc));
298	return rc;
299	}
300
301	/*
302	* Map the object into kernel space.
303	*
304	* We want a normal mapping with normal caching, which good in two ways. First
305	* since the API doesn't have any flags indicating how the mapping should be cached.
306	* And second, because PGM doesn't necessarily respect the cache/writethru bits
307	* anyway for normal RAM.
308	*/
309	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0, RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
310	if (RT_SUCCESS(rc))
311	{
312	/*
313	* Validate the VMM memory.
314	*/
315	VMMDevMemory pVMMDev = (VMMDevMemory )RTR0MemObjAddress(g_MemMapMMIO);
316	Assert(pVMMDev);
317	if ( pVMMDev->u32Version == VMMDEV_MEMORY_VERSION
318	&& pVMMDev->u32Size >= 32 /* just for checking sanity */)
319	{
320	/*
321	* Did we hit the correct size? If not we'll have to
322	* redo the mapping using the correct size.
323	*/
324	if (RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE) == cb)
325	return VINF_SUCCESS;
326
327	Log(("vgdrvOS2MapMemory: Actual size %#RX32 (tried %#zx)\n", pVMMDev->u32Size, cb));
328	cb = RT_ALIGN_32(pVMMDev->u32Size, PAGE_SIZE);
329
330	rc = RTR0MemObjFree(g_MemObjMMIO, true); AssertRC(rc);
331	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
332
333	rc = RTR0MemObjEnterPhys(&g_MemObjMMIO, PhysMMIOBase, cb, RTMEM_CACHE_POLICY_DONT_CARE);
334	if (RT_SUCCESS(rc))
335	{
336	rc = RTR0MemObjMapKernel(&g_MemMapMMIO, g_MemObjMMIO, (void *)-1, 0, RTMEM_PROT_READ \| RTMEM_PROT_WRITE);
337	if (RT_SUCCESS(rc))
338	return VINF_SUCCESS;
339
340	Log(("vgdrvOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc (2nd)\n", PhysMMIOBase, cb, rc));
341	}
342	else
343	Log(("vgdrvOS2MapMemory: RTR0MemObjEnterPhys(,%RCp,%zx) -> %Rrc (2nd)\n", PhysMMIOBase, cb, rc));
344	}
345	else
346	{
347	rc = VERR_VERSION_MISMATCH;
348	LogRel(("vgdrvOS2MapMemory: Bogus VMMDev memory; u32Version=%RX32 (expected %RX32) u32Size=%RX32\n",
349	pVMMDev->u32Version, VMMDEV_MEMORY_VERSION, pVMMDev->u32Size));
350	}
351	}
352	else
353	Log(("vgdrvOS2MapMemory: RTR0MemObjMapKernel [%RCp,%zx] -> %Rrc\n", PhysMMIOBase, cb, rc));
354
355	int rc2 = RTR0MemObjFree(g_MemObjMMIO, true /* fFreeMappings */); AssertRC(rc2);
356	g_MemObjMMIO = g_MemMapMMIO = NIL_RTR0MEMOBJ;
357	return rc;
358	}
359
360
361	/**
362	* Called fromn vgdrvOS2Init to determine which OS/2 version this is.
363	*
364	* @returns VBox OS/2 type.
365	*/
366	static VBOXOSTYPE vgdrvOS2DetectVersion(void)
367	{
368	VBOXOSTYPE enmOSType = VBOXOSTYPE_OS2;
369
370	#if 0 /** @todo dig up the version stuff from GIS later and verify that the numbers are actually decimal. */
371	unsigned uMajor, uMinor;
372	if (uMajor == 2)
373	{
374	if (uMinor >= 30 && uMinor < 40)
375	enmOSType = VBOXOSTYPE_OS2Warp3;
376	else if (uMinor >= 40 && uMinor < 45)
377	enmOSType = VBOXOSTYPE_OS2Warp4;
378	else if (uMinor >= 45 && uMinor < 50)
379	enmOSType = VBOXOSTYPE_OS2Warp45;
380	}
381	#endif
382	return enmOSType;
383	}
384
385
386	DECLASM(int) vgdrvOS2Open(uint16_t sfn)
387	{
388	int rc;
389	PVBOXGUESTSESSION pSession;
390
391	/*
392	* Create a new session.
393	*/
394	uint32_t fRequestor = VMMDEV_REQUESTOR_USERMODE
395	\| VMMDEV_REQUESTOR_TRUST_NOT_GIVEN
396	\| VMMDEV_REQUESTOR_USR_ROOT /* everyone is root on OS/2 */
397	\| VMMDEV_REQUESTOR_GRP_WHEEL /* and their admins */
398	\| VMMDEV_REQUESTOR_NO_USER_DEVICE /** @todo implement /dev/vboxuser? */
399	\| VMMDEV_REQUESTOR_CON_DONT_KNOW; /** @todo check screen group/whatever of process to see if console */
400	rc = VGDrvCommonCreateUserSession(&g_DevExt, fRequestor, &pSession);
401	if (RT_SUCCESS(rc))
402	{
403	pSession->sfn = sfn;
404
405	/*
406	* Insert it into the hash table.
407	*/
408	unsigned iHash = SESSION_HASH(sfn);
409	RTSpinlockAcquire(g_Spinlock);
410	pSession->pNextHash = g_apSessionHashTab[iHash];
411	g_apSessionHashTab[iHash] = pSession;
412	RTSpinlockRelease(g_Spinlock);
413	}
414
415	Log(("vgdrvOS2Open: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, (int)RTProcSelf()));
416	return rc;
417	}
418
419
420	DECLASM(int) vgdrvOS2Close(uint16_t sfn)
421	{
422	Log(("vgdrvOS2Close: pid=%d sfn=%d\n", (int)RTProcSelf(), sfn));
423
424	/*
425	* Remove from the hash table.
426	*/
427	PVBOXGUESTSESSION pSession;
428	const RTPROCESS Process = RTProcSelf();
429	const unsigned iHash = SESSION_HASH(sfn);
430	RTSpinlockAcquire(g_Spinlock);
431
432	pSession = g_apSessionHashTab[iHash];
433	if (pSession)
434	{
435	if ( pSession->sfn == sfn
436	&& pSession->Process == Process)
437	{
438	g_apSessionHashTab[iHash] = pSession->pNextHash;
439	pSession->pNextHash = NULL;
440	}
441	else
442	{
443	PVBOXGUESTSESSION pPrev = pSession;
444	pSession = pSession->pNextHash;
445	while (pSession)
446	{
447	if ( pSession->sfn == sfn
448	&& pSession->Process == Process)
449	{
450	pPrev->pNextHash = pSession->pNextHash;
451	pSession->pNextHash = NULL;
452	break;
453	}
454
455	/* next */
456	pPrev = pSession;
457	pSession = pSession->pNextHash;
458	}
459	}
460	}
461	RTSpinlockRelease(g_Spinlock);
462	if (!pSession)
463	{
464	Log(("VBoxGuestIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d sfn=%d\n", (int)Process, sfn));
465	return VERR_INVALID_PARAMETER;
466	}
467
468	/*
469	* Close the session.
470	*/
471	VGDrvCommonCloseSession(&g_DevExt, pSession);
472	return 0;
473	}
474
475
476	DECLASM(int) vgdrvOS2IOCtlFast(uint16_t sfn, uint8_t iFunction, int32_t *prc)
477	{
478	/*
479	* Find the session.
480	*/
481	const RTPROCESS Process = RTProcSelf();
482	const unsigned iHash = SESSION_HASH(sfn);
483	PVBOXGUESTSESSION pSession;
484
485	RTSpinlockAcquire(g_Spinlock);
486	pSession = g_apSessionHashTab[iHash];
487	if (pSession && pSession->Process != Process)
488	{
489	do pSession = pSession->pNextHash;
490	while ( pSession
491	&& ( pSession->sfn != sfn
492	\|\| pSession->Process != Process));
493	}
494	RTSpinlockRelease(g_Spinlock);
495	if (RT_UNLIKELY(!pSession))
496	{
497	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
498	return VERR_INVALID_PARAMETER;
499	}
500
501	/*
502	* Dispatch the fast IOCtl.
503	*/
504	*prc = VGDrvCommonIoCtlFast(iFunction, &g_DevExt, pSession);
505	return 0;
506	}
507
508
509	/**
510	* 32-bit IDC service routine.
511	*
512	* @returns VBox status code.
513	* @param u32Session The session handle (PVBOXGUESTSESSION).
514	* @param iFunction The requested function.
515	* @param pReqHdr The input/output data buffer. The caller
516	* ensures that this cannot be swapped out, or that
517	* it's acceptable to take a page in fault in the
518	* current context. If the request doesn't take
519	* input or produces output, apssing NULL is okay.
520	* @param cbReq The size of the data buffer.
521	*
522	* @remark This is called from the 16-bit thunker as well as directly from the 32-bit clients.
523	*/
524	DECLASM(int) VGDrvOS2IDCService(uint32_t u32Session, unsigned iFunction, PVBGLREQHDR pReqHdr, size_t cbReq)
525	{
526	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)u32Session;
527	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
528	AssertMsgReturn(pSession->sfn == 0xffff, ("%RX16\n", pSession->sfn), VERR_INVALID_HANDLE);
529	AssertMsgReturn(pSession->pDevExt == &g_DevExt, ("%p != %p\n", pSession->pDevExt, &g_DevExt), VERR_INVALID_HANDLE);
530
531	return VGDrvCommonIoCtl(iFunction, &g_DevExt, pSession, pReqHdr, cbReq);
532	}
533
534
535	/**
536	* Worker for VBoxGuestOS2IDC, it creates the kernel session.
537	*
538	* @returns Pointer to the session.
539	*/
540	DECLASM(PVBOXGUESTSESSION) vgdrvOS2IDCConnect(void)
541	{
542	PVBOXGUESTSESSION pSession;
543	int rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
544	if (RT_SUCCESS(rc))
545	{
546	pSession->sfn = 0xffff;
547	return pSession;
548	}
549	return NULL;
550	}
551
552
553	DECLASM(int) vgdrvOS2IOCtl(uint16_t sfn, uint8_t iCat, uint8_t iFunction, void pvParm, void pvData,
554	uint16_t pcbParm, uint16_t pcbData)
555	{
556	/*
557	* Find the session.
558	*/
559	const RTPROCESS Process = RTProcSelf();
560	const unsigned iHash = SESSION_HASH(sfn);
561	PVBOXGUESTSESSION pSession;
562
563	RTSpinlockAcquire(g_Spinlock);
564	pSession = g_apSessionHashTab[iHash];
565	if (pSession && pSession->Process != Process)
566	{
567	do pSession = pSession->pNextHash;
568	while ( pSession
569	&& ( pSession->sfn != sfn
570	\|\| pSession->Process != Process));
571	}
572	RTSpinlockRelease(g_Spinlock);
573	if (!pSession)
574	{
575	Log(("VBoxGuestIoctl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process));
576	return VERR_INVALID_PARAMETER;
577	}
578
579	/*
580	* Verify the category and dispatch the IOCtl.
581	*
582	* The IOCtl call uses the parameter buffer as generic data input/output
583	* buffer similar to the one unix ioctl buffer argument. While the data
584	* buffer is not used.
585	*/
586	if (RT_LIKELY(iCat == VBGL_IOCTL_CATEGORY))
587	{
588	Log(("vgdrvOS2IOCtl: pSession=%p iFunction=%#x pvParm=%p pvData=%p pcbParm=%d pcbData=%d\n", pSession, iFunction, pvParm, pvData, pcbParm, pcbData));
589	if ( pvParm
590	&& *pcbParm >= sizeof(VBGLREQHDR)
591	&& *pcbData == 0)
592	{
593	/*
594	* Lock the buffer.
595	*/
596	KernVMLock_t ParmLock;
597	int32_t rc = KernVMLock(VMDHL_WRITE, pvParm, pcbParm, &ParmLock, (KernPageList_t )-1, NULL);
598	if (rc == 0)
599	{
600	/*
601	* Process the IOCtl.
602	*/
603	PVBGLREQHDR pReqHdr = (PVBGLREQHDR)pvParm;
604	rc = VGDrvCommonIoCtl(iFunction, &g_DevExt, pSession, pReqHdr, *pcbParm);
605
606	/*
607	* Unlock the buffer.
608	*/
609	pcbParm = RT_SUCCESS(rc) ? pReqHdr->cbOut : sizeof(pReqHdr);
610	int rc2 = KernVMUnlock(&ParmLock);
611	AssertMsg(rc2 == 0, ("rc2=%d\n", rc2)); NOREF(rc2);
612
613	Log2(("vgdrvOS2IOCtl: returns %d\n", rc));
614	return rc;
615	}
616	AssertMsgFailed(("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pvParm, *pcbParm, &ParmLock, rc));
617	return VERR_LOCK_FAILED;
618	}
619	Log2(("vgdrvOS2IOCtl: returns VERR_INVALID_PARAMETER (iFunction=%#x)\n", iFunction));
620	return VERR_INVALID_PARAMETER;
621	}
622	return VERR_NOT_SUPPORTED;
623	}
624
625
626	/**
627	* 32-bit ISR, called by 16-bit assembly thunker in VBoxGuestA-os2.asm.
628	*
629	* @returns true if it's our interrupt, false it isn't.
630	*/
631	DECLASM(bool) vgdrvOS2ISR(void)
632	{
633	Log(("vgdrvOS2ISR\n"));
634
635	return VGDrvCommonISR(&g_DevExt);
636	}
637
638
639	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
640	{
641	/* No polling on OS/2 */
642	NOREF(pDevExt);
643	}
644
645
646	bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char pszName, const char pszValue)
647	{
648	RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue);
649	return false;
650	}
651
652
653	#ifdef DEBUG_READ /** @todo figure out this one once and for all... */
654
655	/**
656	* Callback for writing to the log buffer.
657	*
658	* @returns number of bytes written.
659	* @param pvArg Unused.
660	* @param pachChars Pointer to an array of utf-8 characters.
661	* @param cbChars Number of bytes in the character array pointed to by pachChars.
662	*/
663	static DECLCALLBACK(size_t) vgdrvOS2LogOutput(void pvArg, const char pachChars, size_t cbChars)
664	{
665	size_t cchWritten = 0;
666	while (cbChars-- > 0)
667	{
668	const uint16_t offLogHead = g_offLogHead;
669	const uint16_t offLogHeadNext = (offLogHead + 1) & (g_cchLogMax - 1);
670	if (offLogHeadNext == g_offLogTail)
671	break; /* no */
672	g_szLog[offLogHead] = *pachChars++;
673	g_offLogHead = offLogHeadNext;
674	cchWritten++;
675	}
676	return cchWritten;
677	}
678
679
680	int SUPR0Printf(const char *pszFormat, ...)
681	{
682	va_list va;
683
684	#if 0 //def DEBUG_bird
685	va_start(va, pszFormat);
686	RTLogComPrintfV(pszFormat, va);
687	va_end(va);
688	#endif
689
690	va_start(va, pszFormat);
691	int cch = RTLogFormatV(vgdrvOS2LogOutput, NULL, pszFormat, va);
692	va_end(va);
693
694	return cch;
695	}
696
697	#endif /* DEBUG_READ */
698

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-os2.cpp@ 97828

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