vboxms.c@ 101359

Last change on this file since 101359 was 98103, checked in by vboxsync, 2 years ago
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1	/* $Id: vboxms.c 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* VirtualBox Guest Additions Mouse Driver for Solaris.
4	*/
5
6	/*
7	* Copyright (C) 2012-2023 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
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#define LOG_GROUP LOG_GROUP_DRV_MOUSE
42	#include <VBox/VMMDev.h>
43	#include <VBox/VBoxGuestLib.h>
44	#include <VBox/log.h>
45	#include <VBox/version.h>
46	#include <iprt/assert.h>
47	#include <iprt/asm.h>
48
49	#ifndef TESTCASE
50	# include <sys/modctl.h>
51	# include <sys/msio.h>
52	# include <sys/stat.h>
53	# include <sys/ddi.h>
54	# include <sys/strsun.h>
55	# include <sys/stropts.h>
56	# include <sys/sunddi.h>
57	# include <sys/vuid_event.h>
58	# include <sys/vuid_wheel.h>
59	#undef u /* /usr/include/sys/user.h:249:1 is where this is defined to (curproc->p_user). very cool. */
60	#else /* TESTCASE */
61	# undef IN_RING3
62	# define IN_RING0
63	#endif /* TESTCASE */
64
65	#ifdef TESTCASE /* Include this last as we . */
66	# include "testcase/solaris.h"
67	# include <iprt/test.h>
68	#endif /* TESTCASE */
69
70
71	/*********************************************************************************************************************************
72	* Defined Constants And Macros *
73	*********************************************************************************************************************************/
74
75	/** The module name. */
76	#define DEVICE_NAME "vboxms"
77	/** The module description as seen in 'modinfo'. */
78	#define DEVICE_DESC "VBoxMouseIntegr"
79
80
81	/*********************************************************************************************************************************
82	* Internal functions used in global structures *
83	*********************************************************************************************************************************/
84
85	static int vbmsSolAttach(dev_info_t *pDip, ddi_attach_cmd_t enmCmd);
86	static int vbmsSolDetach(dev_info_t *pDip, ddi_detach_cmd_t enmCmd);
87	static int vbmsSolGetInfo(dev_info_t pDip, ddi_info_cmd_t enmCmd, void pvArg,
88	void **ppvResult);
89	static int vbmsSolOpen(queue_t pReadQueue, dev_t pDev, int fFlag,
90	int fMode, cred_t *pCred);
91	static int vbmsSolClose(queue_t pReadQueue, int fFlag, cred_t pCred);
92	static int vbmsSolWPut(queue_t pWriteQueue, mblk_t pMBlk);
93
94
95	/*********************************************************************************************************************************
96	* Driver global structures *
97	*********************************************************************************************************************************/
98
99	#ifndef TESTCASE /* I see no value in including these in the test. */
100
101	/*
102	* mod_info: STREAMS module information.
103	*/
104	static struct module_info g_vbmsSolModInfo =
105	{
106	0, /* module id number */
107	"vboxms",
108	0, /* minimum packet size */
109	INFPSZ, /* maximum packet size accepted */
110	512, /* high water mark for data flow control */
111	128 /* low water mark */
112	};
113
114	/*
115	* rinit: read queue structure for handling messages coming from below. In
116	* our case this means the host and the virtual hardware, so we do not need
117	* the put and service procedures.
118	*/
119	static struct qinit g_vbmsSolRInit =
120	{
121	NULL, /* put */
122	NULL, /* service thread procedure */
123	vbmsSolOpen,
124	vbmsSolClose,
125	NULL, /* reserved */
126	&g_vbmsSolModInfo,
127	NULL /* module statistics structure */
128	};
129
130	/*
131	* winit: write queue structure for handling messages coming from above. Above
132	* means user space applications: either Guest Additions user space tools or
133	* applications reading pointer input. Messages from the last most likely pass
134	* through at least the "consms" console mouse streams module which multiplexes
135	* hardware pointer drivers to a single virtual pointer.
136	*/
137	static struct qinit g_vbmsSolWInit =
138	{
139	vbmsSolWPut,
140	NULL, /* service thread procedure */
141	NULL, /* open */
142	NULL, /* close */
143	NULL, /* reserved */
144	&g_vbmsSolModInfo,
145	NULL /* module statistics structure */
146	};
147
148	/**
149	* streamtab: for drivers that support char/block entry points.
150	*/
151	static struct streamtab g_vbmsSolStreamTab =
152	{
153	&g_vbmsSolRInit,
154	&g_vbmsSolWInit,
155	NULL, /* MUX rinit */
156	NULL /* MUX winit */
157	};
158
159	/**
160	* cb_ops: for drivers that support char/block entry points
161	*/
162	static struct cb_ops g_vbmsSolCbOps =
163	{
164	nodev, /* open */
165	nodev, /* close */
166	nodev, /* b strategy */
167	nodev, /* b dump */
168	nodev, /* b print */
169	nodev, /* c read */
170	nodev, /* c write */
171	nodev, /* c ioctl */
172	nodev, /* c devmap */
173	nodev, /* c mmap */
174	nodev, /* c segmap */
175	nochpoll, /* c poll */
176	ddi_prop_op, /* property ops */
177	&g_vbmsSolStreamTab,
178	D_MP,
179	CB_REV /* revision */
180	};
181
182	/**
183	* dev_ops: for driver device operations
184	*/
185	static struct dev_ops g_vbmsSolDevOps =
186	{
187	DEVO_REV, /* driver build revision */
188	0, /* ref count */
189	vbmsSolGetInfo,
190	nulldev, /* identify */
191	nulldev, /* probe */
192	vbmsSolAttach,
193	vbmsSolDetach,
194	nodev, /* reset */
195	&g_vbmsSolCbOps,
196	NULL, /* bus operations */
197	nodev /* power */
198	};
199
200	/**
201	* modldrv: export driver specifics to the kernel
202	*/
203	static struct modldrv g_vbmsSolModule =
204	{
205	&mod_driverops, /* extern from kernel */
206	DEVICE_DESC " " VBOX_VERSION_STRING "r" RT_XSTR(VBOX_SVN_REV),
207	&g_vbmsSolDevOps
208	};
209
210	/**
211	* modlinkage: export install/remove/info to the kernel.
212	*/
213	static struct modlinkage g_vbmsSolModLinkage =
214	{
215	MODREV_1, /* loadable module system revision */
216	&g_vbmsSolModule,
217	NULL /* terminate array of linkage structures */
218	};
219
220	#else /* TESTCASE */
221	static void *g_vbmsSolModLinkage;
222	#endif /* TESTCASE */
223
224	/**
225	* State info for each open file handle.
226	*/
227	typedef struct
228	{
229	/** Device handle. */
230	dev_info_t *pDip;
231	/** Mutex protecting the guest library against multiple initialistation or
232	* uninitialisation. */
233	kmutex_t InitMtx;
234	/** Initialisation counter for the guest library. */
235	size_t cInits;
236	/** The STREAMS write queue which we need for sending messages up to
237	* user-space. */
238	queue_t *pWriteQueue;
239	/** Pre-allocated mouse status VMMDev request for use in the IRQ
240	* handler. */
241	VMMDevReqMouseStatus *pMouseStatusReq;
242	/* The current greatest horizontal pixel offset on the screen, used for
243	* absolute mouse position reporting.
244	*/
245	int cMaxScreenX;
246	/* The current greatest vertical pixel offset on the screen, used for
247	* absolute mouse position reporting.
248	*/
249	int cMaxScreenY;
250	} VBMSSTATE, *PVBMSSTATE;
251
252
253	/*********************************************************************************************************************************
254	* Global Variables *
255	*********************************************************************************************************************************/
256
257	/** Global driver state. Actually this could be allocated dynamically. */
258	static VBMSSTATE g_OpenNodeState /* = { 0 } */;
259
260
261	/*********************************************************************************************************************************
262	* Kernel entry points *
263	*********************************************************************************************************************************/
264
265	/** Driver initialisation. */
266	int _init(void)
267	{
268	int rc;
269	LogRelFlow((DEVICE_NAME ": built on " __DATE__ " at " __TIME__ "\n"));
270	mutex_init(&g_OpenNodeState.InitMtx, NULL, MUTEX_DRIVER, NULL);
271	/*
272	* Prevent module autounloading.
273	*/
274	modctl_t *pModCtl = mod_getctl(&g_vbmsSolModLinkage);
275	if (pModCtl)
276	pModCtl->mod_loadflags \|= MOD_NOAUTOUNLOAD;
277	else
278	LogRel((DEVICE_NAME ": failed to disable autounloading!\n"));
279	rc = mod_install(&g_vbmsSolModLinkage);
280
281	LogRelFlow((DEVICE_NAME ": initialisation returning %d.\n", rc));
282	return rc;
283	}
284
285
286	#ifdef TESTCASE
287	/** Simple test of the flow through _init. */
288	static void test_init(RTTEST hTest)
289	{
290	RTTestSub(hTest, "Testing _init");
291	RTTEST_CHECK(hTest, _init() == 0);
292	}
293	#endif
294
295
296	/** Driver cleanup. */
297	int _fini(void)
298	{
299	int rc;
300
301	LogRelFlow((DEVICE_NAME ":_fini\n"));
302	rc = mod_remove(&g_vbmsSolModLinkage);
303	if (!rc)
304	mutex_destroy(&g_OpenNodeState.InitMtx);
305
306	return rc;
307	}
308
309
310	/** Driver identification. */
311	int _info(struct modinfo *pModInfo)
312	{
313	int rc;
314	LogRelFlow((DEVICE_NAME ":_info\n"));
315	rc = mod_info(&g_vbmsSolModLinkage, pModInfo);
316	LogRelFlow((DEVICE_NAME ":_info returning %d\n", rc));
317	return rc;
318	}
319
320
321	/*********************************************************************************************************************************
322	* Initialisation entry points *
323	*********************************************************************************************************************************/
324
325	/**
326	* Attach entry point, to attach a device to the system or resume it.
327	*
328	* @param pDip The module structure instance.
329	* @param enmCmd Attach type (ddi_attach_cmd_t)
330	*
331	* @return corresponding solaris error code.
332	*/
333	int vbmsSolAttach(dev_info_t *pDip, ddi_attach_cmd_t enmCmd)
334	{
335	LogRelFlow((DEVICE_NAME "::Attach\n"));
336	switch (enmCmd)
337	{
338	case DDI_ATTACH:
339	{
340	int rc;
341	/* Only one instance supported. */
342	if (!ASMAtomicCmpXchgPtr(&g_OpenNodeState.pDip, pDip, NULL))
343	return DDI_FAILURE;
344	rc = ddi_create_minor_node(pDip, DEVICE_NAME, S_IFCHR, 0 /* instance /, DDI_PSEUDO, 0 / flags */);
345	if (rc == DDI_SUCCESS)
346	return DDI_SUCCESS;
347	ASMAtomicWritePtr(&g_OpenNodeState.pDip, NULL);
348	return DDI_FAILURE;
349	}
350
351	case DDI_RESUME:
352	{
353	/** @todo implement resume for guest driver. */
354	return DDI_SUCCESS;
355	}
356
357	default:
358	return DDI_FAILURE;
359	}
360	}
361
362
363	/**
364	* Detach entry point, to detach a device to the system or suspend it.
365	*
366	* @param pDip The module structure instance.
367	* @param enmCmd Attach type (ddi_attach_cmd_t)
368	*
369	* @return corresponding solaris error code.
370	*/
371	int vbmsSolDetach(dev_info_t *pDip, ddi_detach_cmd_t enmCmd)
372	{
373	LogRelFlow((DEVICE_NAME "::Detach\n"));
374	switch (enmCmd)
375	{
376	case DDI_DETACH:
377	{
378	ddi_remove_minor_node(pDip, NULL);
379	ASMAtomicWritePtr(&g_OpenNodeState.pDip, NULL);
380	return DDI_SUCCESS;
381	}
382
383	case DDI_SUSPEND:
384	{
385	/** @todo implement suspend for guest driver. */
386	return DDI_SUCCESS;
387	}
388
389	default:
390	return DDI_FAILURE;
391	}
392	}
393
394
395	/**
396	* Info entry point, called by solaris kernel for obtaining driver info.
397	*
398	* @param pDip The module structure instance (do not use).
399	* @param enmCmd Information request type.
400	* @param pvArg Type specific argument.
401	* @param ppvResult Where to store the requested info.
402	*
403	* @return corresponding solaris error code.
404	*/
405	int vbmsSolGetInfo(dev_info_t pDip, ddi_info_cmd_t enmCmd, void pvArg,
406	void **ppvResult)
407	{
408	LogRelFlow((DEVICE_NAME "::GetInfo\n"));
409
410	int rc = DDI_SUCCESS;
411	switch (enmCmd)
412	{
413	case DDI_INFO_DEVT2DEVINFO:
414	{
415	ppvResult = (void )g_OpenNodeState.pDip;
416	if (!*ppvResult)
417	rc = DDI_FAILURE;
418	break;
419	}
420
421	case DDI_INFO_DEVT2INSTANCE:
422	{
423	/* There can only be a single-instance of this driver and thus its instance number is 0. */
424	ppvResult = (void )0;
425	break;
426	}
427
428	default:
429	rc = DDI_FAILURE;
430	break;
431	}
432
433	NOREF(pvArg);
434	return rc;
435	}
436
437
438	/*********************************************************************************************************************************
439	* Main code *
440	*********************************************************************************************************************************/
441
442	static void vbmsSolNotify(void *pvState);
443	static void vbmsSolVUIDPutAbsEvent(PVBMSSTATE pState, ushort_t cEvent,
444	int cValue);
445
446	/**
447	* Open callback for the read queue, which we use as a generic device open
448	* handler.
449	*/
450	int vbmsSolOpen(queue_t pReadQueue, dev_t pDev, int fFlag, int fMode,
451	cred_t *pCred)
452	{
453	PVBMSSTATE pState = NULL;
454	int rc = VINF_SUCCESS;
455
456	NOREF(fFlag);
457	NOREF(pCred);
458	LogRelFlow((DEVICE_NAME "::Open, pWriteQueue=%p\n", WR(pReadQueue)));
459
460	/*
461	* Sanity check on the mode parameter - only open as a driver, not a
462	* module, and we do cloning ourselves.
463	*/
464	if (fMode)
465	{
466	LogRel(("::Open: invalid attempt to clone device."));
467	return EINVAL;
468	}
469
470	pState = &g_OpenNodeState;
471	mutex_enter(&pState->InitMtx);
472	/*
473	* Check and remember our STREAM queue.
474	*/
475	if ( pState->pWriteQueue
476	&& (pState->pWriteQueue != WR(pReadQueue)))
477	{
478	mutex_exit(&pState->InitMtx);
479	LogRel((DEVICE_NAME "::Open: unexpectedly called with a different queue to previous calls. Exiting.\n"));
480	return EINVAL;
481	}
482	if (!pState->cInits)
483	{
484	/*
485	* Initialize IPRT R0 driver, which internally calls OS-specific r0
486	* init, and create a new session.
487	*/
488	rc = VbglR0InitClient();
489	if (RT_SUCCESS(rc))
490	{
491	rc = VbglR0GRAlloc((VMMDevRequestHeader **)
492	&pState->pMouseStatusReq,
493	sizeof(*pState->pMouseStatusReq),
494	VMMDevReq_GetMouseStatus);
495	if (RT_FAILURE(rc))
496	VbglR0TerminateClient();
497	else
498	{
499	int rc2;
500	/* Initialise user data for the queues to our state and
501	* vice-versa. */
502	pState->pWriteQueue = WR(pReadQueue);
503	WR(pReadQueue)->q_ptr = (char *)pState;
504	pReadQueue->q_ptr = (char *)pState;
505	qprocson(pReadQueue);
506	/* Enable our IRQ handler. */
507	rc2 = VbglR0SetMouseNotifyCallback(vbmsSolNotify, (void *)pState);
508	if (RT_FAILURE(rc2))
509	/* Log the failure. I may well have not understood what
510	* is going on here, and the logging may help me. */
511	LogRelFlow(("Failed to install the event handler call-back, rc=%Rrc\n",
512	rc2));
513	}
514	}
515	}
516	if (RT_SUCCESS(rc))
517	++pState->cInits;
518	mutex_exit(&pState->InitMtx);
519	if (RT_FAILURE(rc))
520	{
521	LogRel(("open time initialisation failed. rc=%d\n", rc));
522	ASMAtomicWriteNullPtr(&pState->pWriteQueue);
523	return EINVAL;
524	}
525	return 0;
526	}
527
528
529	/**
530	* Notification callback, called when the VBoxGuest mouse pointer is moved.
531	* We send a VUID event up to user space. We may send a miscalculated event
532	* if a resolution change is half-way through, but that is pretty much to be
533	* expected, so we won't worry about it.
534	*/
535	void vbmsSolNotify(void *pvState)
536	{
537	PVBMSSTATE pState = (PVBMSSTATE)pvState;
538	int rc;
539
540	pState->pMouseStatusReq->mouseFeatures = 0;
541	pState->pMouseStatusReq->pointerXPos = 0;
542	pState->pMouseStatusReq->pointerYPos = 0;
543	rc = VbglR0GRPerform(&pState->pMouseStatusReq->header);
544	if (RT_SUCCESS(rc))
545	{
546	int cMaxScreenX = pState->cMaxScreenX;
547	int cMaxScreenY = pState->cMaxScreenY;
548	int x = pState->pMouseStatusReq->pointerXPos;
549	int y = pState->pMouseStatusReq->pointerYPos;
550
551	if (cMaxScreenX && cMaxScreenY)
552	{
553	vbmsSolVUIDPutAbsEvent(pState, LOC_X_ABSOLUTE,
554	x * cMaxScreenX / VMMDEV_MOUSE_RANGE_MAX);
555	vbmsSolVUIDPutAbsEvent(pState, LOC_Y_ABSOLUTE,
556	y * cMaxScreenY / VMMDEV_MOUSE_RANGE_MAX);
557	}
558	}
559	}
560
561
562	void vbmsSolVUIDPutAbsEvent(PVBMSSTATE pState, ushort_t cEvent,
563	int cValue)
564	{
565	queue_t *pReadQueue = RD(pState->pWriteQueue);
566	mblk_t *pMBlk = allocb(sizeof(Firm_event), BPRI_HI);
567	Firm_event *pEvent;
568	AssertReturnVoid(cEvent == LOC_X_ABSOLUTE \|\| cEvent == LOC_Y_ABSOLUTE);
569	if (!pMBlk)
570	return; /* If kernel memory is short a missed event is acceptable! */
571	pEvent = (Firm_event *)pMBlk->b_wptr;
572	pEvent->id = cEvent;
573	pEvent->pair_type = FE_PAIR_DELTA;
574	pEvent->pair = cEvent == LOC_X_ABSOLUTE ? LOC_X_DELTA : LOC_Y_DELTA;
575	pEvent->value = cValue;
576	uniqtime32(&pEvent->time);
577	pMBlk->b_wptr += sizeof(Firm_event);
578	/* Put the message on the queue immediately if it is not blocked. */
579	if (canput(pReadQueue->q_next))
580	putnext(pReadQueue, pMBlk);
581	else
582	putq(pReadQueue, pMBlk);
583	}
584
585
586	/**
587	* Close callback for the read queue, which we use as a generic device close
588	* handler.
589	*/
590	int vbmsSolClose(queue_t pReadQueue, int fFlag, cred_t pCred)
591	{
592	PVBMSSTATE pState = (PVBMSSTATE)pReadQueue->q_ptr;
593
594	LogRelFlow((DEVICE_NAME "::Close, pWriteQueue=%p\n", WR(pReadQueue)));
595	NOREF(fFlag);
596	NOREF(pCred);
597
598	if (!pState)
599	{
600	Log((DEVICE_NAME "::Close: failed to get pState.\n"));
601	return EFAULT;
602	}
603
604	mutex_enter(&pState->InitMtx);
605	--pState->cInits;
606	if (!pState->cInits)
607	{
608	VbglR0SetMouseStatus(0);
609	/* Disable our IRQ handler. */
610	VbglR0SetMouseNotifyCallback(NULL, NULL);
611	qprocsoff(pReadQueue);
612
613	/*
614	* Close the session.
615	*/
616	ASMAtomicWriteNullPtr(&pState->pWriteQueue);
617	pReadQueue->q_ptr = NULL;
618	VbglR0GRFree(&pState->pMouseStatusReq->header);
619	VbglR0TerminateClient();
620	}
621	mutex_exit(&pState->InitMtx);
622	return 0;
623	}
624
625
626	#ifdef TESTCASE
627	/** Simple test of vbmsSolOpen and vbmsSolClose. */
628	static void testOpenClose(RTTEST hTest)
629	{
630	queue_t aQueues[2];
631	dev_t device = 0;
632	int rc;
633
634	RTTestSub(hTest, "Testing vbmsSolOpen and vbmsSolClose");
635	RT_ZERO(g_OpenNodeState);
636	RT_ZERO(aQueues);
637	doInitQueues(&aQueues[0]);
638	rc = vbmsSolOpen(RD(&aQueues[0]), &device, 0, 0, NULL);
639	RTTEST_CHECK(hTest, rc == 0);
640	RTTEST_CHECK(hTest, g_OpenNodeState.pWriteQueue == WR(&aQueues[0]));
641	vbmsSolClose(RD(&aQueues[0]), 0, NULL);
642	}
643	#endif
644
645
646	/* Helper for vbmsSolWPut. */
647	static int vbmsSolDispatchIOCtl(PVBMSSTATE pState, mblk_t *pMBlk);
648
649	/**
650	* Handler for messages sent from above (user-space and upper modules) which
651	* land in our write queue.
652	*/
653	int vbmsSolWPut(queue_t pWriteQueue, mblk_t pMBlk)
654	{
655	PVBMSSTATE pState = (PVBMSSTATE)pWriteQueue->q_ptr;
656	LogRelFlowFunc((DEVICE_NAME "::"));
657	switch (pMBlk->b_datap->db_type)
658	{
659	case M_FLUSH:
660	LogRelFlow(("M_FLUSH, FLUSHW=%RTbool, FLUSHR=%RTbool\n",
661	pMBlk->b_rptr & FLUSHW, pMBlk->b_rptr & FLUSHR));
662	/* Flush the write queue if so requested. */
663	if (*pMBlk->b_rptr & FLUSHW)
664	flushq(pWriteQueue, FLUSHDATA);
665
666	/* Flush the read queue if so requested. */
667	if (*pMBlk->b_rptr & FLUSHR)
668	flushq(RD(pWriteQueue), FLUSHDATA);
669
670	/* We have no one below us to pass the message on to. */
671	freemsg(pMBlk);
672	return 0;
673	/* M_IOCDATA is additional data attached to (at least) transparent
674	* IOCtls. We handle the two together here and separate them further
675	* down. */
676	case M_IOCTL:
677	case M_IOCDATA:
678	{
679	int err;
680
681	LogRelFlow(( pMBlk->b_datap->db_type == M_IOCTL
682	? "M_IOCTL\n" : "M_IOCDATA\n"));
683	err = vbmsSolDispatchIOCtl(pState, pMBlk);
684	if (!err)
685	qreply(pWriteQueue, pMBlk);
686	else
687	miocnak(pWriteQueue, pMBlk, 0, err);
688	break;
689	}
690	default:
691	LogRelFlow(("Unknown command, not acknowledging.\n"));
692	}
693	return 0;
694	}
695
696
697	#ifdef TESTCASE
698	/* Constants, definitions and test functions for testWPut. */
699	static const int g_ccTestWPutFirmEvent = VUID_FIRM_EVENT;
700	# define PVGFORMAT (&g_ccTestWPutFirmEvent)
701	# define CBGFORMAT (sizeof(g_ccTestWPutFirmEvent))
702	static const Ms_screen_resolution g_TestResolution = { 640, 480 };
703	# define PMSIOSRES (&g_TestResolution)
704	# define CBMSIOSRES (sizeof(g_TestResolution))
705
706	static inline bool testSetResolution(RTTEST hTest, queue_t *pWriteQueue,
707	struct msgb *pMBlk)
708	{
709	PVBMSSTATE pState = (PVBMSSTATE)pWriteQueue->q_ptr;
710	RTTEST_CHECK_MSG_RET(hTest, pState->cMaxScreenX
711	== g_TestResolution.width - 1,
712	(hTest, "pState->cMaxScreenX=%d\n",
713	pState->cMaxScreenX), false);
714	RTTEST_CHECK_MSG_RET(hTest, pState->cMaxScreenY
715	== g_TestResolution.height - 1,
716	(hTest, "pState->cMaxScreenY=%d\n",
717	pState->cMaxScreenY), false);
718	return true;
719	}
720
721	/** Data table for testWPut. */
722	static struct
723	{
724	int iIOCCmd;
725	size_t cbData;
726	const void *pvDataIn;
727	size_t cbDataIn;
728	const void *pvDataOut;
729	size_t cbDataOut;
730	int rcExp;
731	bool (pfnExtra)(RTTEST hTest, queue_t pWriteQueue, struct msgb *pMBlk);
732	bool fCanTransparent;
733	} g_asTestWPut[] =
734	{
735	/* iIOCCmd cbData pvDataIn cbDataIn
736	pvDataOut cbDataOut rcExp pfnExtra fCanTransparent */
737	{ VUIDGFORMAT, sizeof(int), NULL, 0,
738	PVGFORMAT, CBGFORMAT, 0, NULL, true },
739	{ VUIDGFORMAT, sizeof(int) - 1, NULL, 0,
740	NULL, 0, EINVAL, NULL, false },
741	{ VUIDGFORMAT, sizeof(int) + 1, NULL, 0,
742	PVGFORMAT, CBGFORMAT, 0, NULL, true },
743	{ VUIDSFORMAT, sizeof(int), PVGFORMAT, CBGFORMAT,
744	NULL, 0, 0, NULL, true },
745	{ MSIOSRESOLUTION, CBMSIOSRES, PMSIOSRES, CBMSIOSRES,
746	NULL, 0, 0, testSetResolution, true },
747	{ VUIDGWHEELINFO, 0, NULL, 0,
748	NULL, 0, EINVAL, NULL, true }
749	};
750
751	# undef PVGFORMAT
752	# undef CBGFORMAT
753	# undef PMSIOSRES
754	# undef CBMSIOSRES
755
756	/* Helpers for testWPut. */
757	static void testWPutStreams(RTTEST hTest, unsigned i);
758	static void testWPutTransparent(RTTEST hTest, unsigned i);
759	static void testWPutIOCDataIn(RTTEST hTest, unsigned i);
760	static void testWPutIOCDataOut(RTTEST hTest, unsigned i);
761
762	/** Test WPut's handling of different IOCtls, which is bulk of the logic in
763	* this file. */
764	static void testWPut(RTTEST hTest)
765	{
766	unsigned i;
767
768	RTTestSub(hTest, "Testing vbmsWPut");
769	for (i = 0; i < RT_ELEMENTS(g_asTestWPut); ++i)
770	{
771	AssertReturnVoid(g_asTestWPut[i].cbDataIn <= g_asTestWPut[i].cbData);
772	AssertReturnVoid(g_asTestWPut[i].cbDataOut <= g_asTestWPut[i].cbData);
773	testWPutStreams(hTest, i);
774	if (g_asTestWPut[i].fCanTransparent)
775	testWPutTransparent(hTest, i);
776	if (g_asTestWPut[i].fCanTransparent && g_asTestWPut[i].cbDataIn)
777	testWPutIOCDataIn(hTest, i);
778	if (g_asTestWPut[i].fCanTransparent && g_asTestWPut[i].cbDataOut)
779	testWPutIOCDataOut(hTest, i);
780	}
781	}
782
783
784	#define MSG_DATA_SIZE 1024
785
786	/** Simulate sending a streams IOCtl to WPut with the parameters from table
787	* line @a i. */
788	void testWPutStreams(RTTEST hTest, unsigned i)
789	{
790	queue_t aQueues[2];
791	dev_t device = 0;
792	struct msgb *pMBlk = allocb(sizeof(struct iocblk), BPRI_MED);
793	struct msgb *pMBlkCont = allocb(MSG_DATA_SIZE, BPRI_MED);
794	struct iocblk pIOCBlk = pMBlk ? (struct iocblk )pMBlk->b_rptr : NULL;
795	int rc, cFormat = 0;
796
797	AssertReturnVoid(pMBlk);
798	AssertReturnVoidStmt(pMBlkCont, freemsg(pMBlk));
799	RT_ZERO(aQueues);
800	doInitQueues(&aQueues[0]);
801	rc = vbmsSolOpen(RD(&aQueues[0]), &device, 0, 0, NULL);
802	RTTEST_CHECK_MSG(hTest, rc == 0, (hTest, "i=%u, rc=%d\n", i, rc));
803	RTTEST_CHECK_MSG(hTest, g_OpenNodeState.pWriteQueue
804	== WR(&aQueues[0]), (hTest, "i=%u\n", i));
805	pMBlk->b_datap->db_type = M_IOCTL;
806	pIOCBlk->ioc_cmd = g_asTestWPut[i].iIOCCmd;
807	pIOCBlk->ioc_count = g_asTestWPut[i].cbData;
808	AssertReturnVoid(g_asTestWPut[i].cbData <= MSG_DATA_SIZE);
809	memcpy(pMBlkCont->b_rptr, g_asTestWPut[i].pvDataIn,
810	g_asTestWPut[i].cbDataIn);
811	pMBlk->b_cont = pMBlkCont;
812	rc = vbmsSolWPut(WR(&aQueues[0]), pMBlk);
813	RTTEST_CHECK_MSG(hTest, pIOCBlk->ioc_error == g_asTestWPut[i].rcExp,
814	(hTest, "i=%u, IOCBlk.ioc_error=%d\n", i,
815	pIOCBlk->ioc_error));
816	RTTEST_CHECK_MSG(hTest, pIOCBlk->ioc_count == g_asTestWPut[i].cbDataOut,
817	(hTest, "i=%u, ioc_count=%u\n", i, pIOCBlk->ioc_count));
818	RTTEST_CHECK_MSG(hTest, !memcmp(pMBlkCont->b_rptr,
819	g_asTestWPut[i].pvDataOut,
820	g_asTestWPut[i].cbDataOut),
821	(hTest, "i=%u\n", i));
822	/* Hack to ensure that miocpullup() gets called when needed. */
823	if (g_asTestWPut[i].cbData > 0)
824	RTTEST_CHECK_MSG(hTest, pMBlk->b_flag == 1, (hTest, "i=%u\n", i));
825	if (!g_asTestWPut[i].rcExp)
826	RTTEST_CHECK_MSG(hTest, RD(&aQueues[0])->q_first == pMBlk,
827	(hTest, "i=%u\n", i));
828	if (g_asTestWPut[i].pfnExtra)
829	if (!g_asTestWPut[i].pfnExtra(hTest, WR(&aQueues[0]), pMBlk))
830	RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Called from %s.\n",
831	__PRETTY_FUNCTION__);
832	vbmsSolClose(RD(&aQueues[1]), 0, NULL);
833	freemsg(pMBlk);
834	}
835
836
837	#define USER_ADDRESS 0xfeedbacc
838
839	/** Simulate sending a transparent IOCtl to WPut with the parameters from table
840	* line @a i. */
841	void testWPutTransparent(RTTEST hTest, unsigned i)
842	{
843	queue_t aQueues[2];
844	dev_t device = 0;
845	struct msgb *pMBlk = allocb(sizeof(struct iocblk), BPRI_MED);
846	struct msgb pMBlkCont = allocb(sizeof(void ), BPRI_MED);
847	struct iocblk pIOCBlk = pMBlk ? (struct iocblk )pMBlk->b_rptr : NULL;
848	struct copyreq *pCopyReq;
849	int rc, cFormat = 0;
850
851	/* if (g_asTestWPut[i].cbDataIn == 0 && g_asTestWPut[i].cbDataOut != 0)
852	return; / / This case will be handled once the current ones work. */
853	AssertReturnVoid(pMBlk);
854	AssertReturnVoidStmt(pMBlkCont, freemsg(pMBlk));
855	RT_ZERO(aQueues);
856	doInitQueues(&aQueues[0]);
857	rc = vbmsSolOpen(RD(&aQueues[0]), &device, 0, 0, NULL);
858	RTTEST_CHECK_MSG(hTest, rc == 0, (hTest, "i=%u, rc=%d\n", i, rc));
859	RTTEST_CHECK_MSG(hTest, g_OpenNodeState.pWriteQueue
860	== WR(&aQueues[0]), (hTest, "i=%u\n", i));
861	pMBlk->b_datap->db_type = M_IOCTL;
862	pIOCBlk->ioc_cmd = g_asTestWPut[i].iIOCCmd;
863	pIOCBlk->ioc_count = TRANSPARENT;
864	(void )pMBlkCont->b_rptr = (void )USER_ADDRESS;
865	pMBlk->b_cont = pMBlkCont;
866	rc = vbmsSolWPut(WR(&aQueues[0]), pMBlk);
867	pCopyReq = (struct copyreq *)pMBlk->b_rptr;
868	RTTEST_CHECK_MSG(hTest, ( ( g_asTestWPut[i].cbDataIn
869	&& (pMBlk->b_datap->db_type == M_COPYIN))
870	\|\| ( g_asTestWPut[i].cbDataOut
871	&& (pMBlk->b_datap->db_type == M_COPYOUT))
872	\|\| ( (g_asTestWPut[i].rcExp == 0)
873	&& pMBlk->b_datap->db_type == M_IOCACK)
874	\|\| (pMBlk->b_datap->db_type == M_IOCNAK)),
875	(hTest, "i=%u, db_type=%u\n", i,
876	(unsigned) pMBlk->b_datap->db_type));
877	/* Our TRANSPARENT IOCtls can only return non-zero if they have no payload.
878	* Others should either return zero or be non-TRANSPARENT only. */
879	if (pMBlk->b_datap->db_type == M_IOCNAK)
880	RTTEST_CHECK_MSG(hTest, pIOCBlk->ioc_error == g_asTestWPut[i].rcExp,
881	(hTest, "i=%u, IOCBlk.ioc_error=%d\n", i,
882	pIOCBlk->ioc_error));
883	if (g_asTestWPut[i].cbData)
884	{
885	RTTEST_CHECK_MSG(hTest, pCopyReq->cq_addr == (char *)USER_ADDRESS,
886	(hTest, "i=%u, cq_addr=%p\n", i, pCopyReq->cq_addr));
887	RTTEST_CHECK_MSG( hTest, pCopyReq->cq_size
888	== g_asTestWPut[i].cbDataIn
889	? g_asTestWPut[i].cbDataIn
890	: g_asTestWPut[i].cbDataOut,
891	(hTest, "i=%u, cq_size=%llu\n", i,
892	(unsigned long long)pCopyReq->cq_size));
893	}
894	/* Implementation detail - check that the private pointer is correctly
895	* set to the user address for two direction IOCtls or NULL otherwise. */
896	if (g_asTestWPut[i].cbDataIn && g_asTestWPut[i].cbDataOut)
897	RTTEST_CHECK_MSG(hTest, pCopyReq->cq_private == (mblk_t *)USER_ADDRESS,
898	(hTest, "i=%u, cq_private=%p\n", i,
899	pCopyReq->cq_private));
900	else if ( (pMBlk->b_datap->db_type == M_COPYIN)
901	\|\| (pMBlk->b_datap->db_type == M_COPYOUT))
902	RTTEST_CHECK_MSG(hTest, !pCopyReq->cq_private,
903	(hTest, "i=%u, cq_private=%p\n", i,
904	pCopyReq->cq_private));
905	if (!g_asTestWPut[i].rcExp)
906	RTTEST_CHECK_MSG(hTest, RD(&aQueues[0])->q_first == pMBlk,
907	(hTest, "i=%u\n", i));
908	if (g_asTestWPut[i].pfnExtra && !g_asTestWPut[i].cbData)
909	if (!g_asTestWPut[i].pfnExtra(hTest, WR(&aQueues[0]), pMBlk))
910	RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Called from %s.\n",
911	__PRETTY_FUNCTION__);
912	vbmsSolClose(RD(&aQueues[1]), 0, NULL);
913	freemsg(pMBlk);
914	}
915
916
917	/** Simulate sending follow-on IOCData messages to a transparent IOCtl to WPut
918	* with the parameters from table line @a i. */
919	void testWPutIOCDataIn(RTTEST hTest, unsigned i)
920	{
921	queue_t aQueues[2];
922	dev_t device = 0;
923	struct msgb *pMBlk = allocb(sizeof(struct copyresp), BPRI_MED);
924	struct msgb *pMBlkCont = allocb(MSG_DATA_SIZE, BPRI_MED);
925	struct copyresp pCopyResp = pMBlk ? (struct copyresp )pMBlk->b_rptr
926	: NULL;
927	void *pvData = pMBlkCont ? pMBlkCont->b_rptr : NULL;
928	struct copyreq *pCopyReq;
929	int rc, cFormat = 0;
930
931	AssertReturnVoid(pMBlk);
932	AssertReturnVoidStmt(pMBlkCont, freemsg(pMBlk));
933	RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "%s: i=%u\n", __PRETTY_FUNCTION__,
934	i);
935	AssertReturnVoidStmt(g_asTestWPut[i].cbDataIn, freemsg(pMBlk));
936	RT_ZERO(aQueues);
937	doInitQueues(&aQueues[0]);
938	rc = vbmsSolOpen(RD(&aQueues[0]), &device, 0, 0, NULL);
939	RTTEST_CHECK_MSG(hTest, rc == 0, (hTest, "i=%u, rc=%d\n", i, rc));
940	RTTEST_CHECK_MSG(hTest, g_OpenNodeState.pWriteQueue
941	== WR(&aQueues[0]), (hTest, "i=%u\n", i));
942	pMBlk->b_datap->db_type = M_IOCDATA;
943	pCopyResp->cp_cmd = g_asTestWPut[i].iIOCCmd;
944	if (g_asTestWPut[i].cbDataOut)
945	pCopyResp->cp_private = USER_ADDRESS;
946	AssertReturnVoid(g_asTestWPut[i].cbData <= MSG_DATA_SIZE);
947	memcpy(pMBlkCont->b_rptr, g_asTestWPut[i].pvDataIn, g_asTestWPut[i].cbDataIn);
948	pMBlk->b_cont = pMBlkCont;
949	rc = vbmsSolWPut(WR(&aQueues[0]), pMBlk);
950	pCopyReq = (struct copyreq *)pMBlk->b_rptr;
951	RTTEST_CHECK_MSG(hTest, ( ( g_asTestWPut[i].cbDataOut
952	&& (pMBlk->b_datap->db_type == M_COPYOUT))
953	\|\| ( (g_asTestWPut[i].rcExp == 0)
954	&& pMBlk->b_datap->db_type == M_IOCACK)
955	\|\| (pMBlk->b_datap->db_type == M_IOCNAK)),
956	(hTest, "i=%u, db_type=%u\n", i,
957	(unsigned) pMBlk->b_datap->db_type));
958	if (g_asTestWPut[i].cbDataOut)
959	{
960	RTTEST_CHECK_MSG(hTest, pCopyReq->cq_addr == (char *)pvData,
961	(hTest, "i=%u, cq_addr=%p\n", i, pCopyReq->cq_addr));
962	RTTEST_CHECK_MSG(hTest, pCopyReq->cq_size == g_asTestWPut[i].cbData,
963	(hTest, "i=%u, cq_size=%llu\n", i,
964	(unsigned long long)pCopyReq->cq_size));
965	RTTEST_CHECK_MSG(hTest, !memcmp(pvData, g_asTestWPut[i].pvDataOut,
966	g_asTestWPut[i].cbDataOut),
967	(hTest, "i=%u\n", i));
968	}
969	RTTEST_CHECK_MSG(hTest, !pCopyReq->cq_private,
970	(hTest, "i=%u, cq_private=%p\n", i,
971	pCopyReq->cq_private));
972	if (!g_asTestWPut[i].rcExp)
973	RTTEST_CHECK_MSG(hTest, RD(&aQueues[0])->q_first == pMBlk,
974	(hTest, "i=%u\n", i));
975	if (g_asTestWPut[i].pfnExtra && !g_asTestWPut[i].cbDataOut)
976	if (!g_asTestWPut[i].pfnExtra(hTest, WR(&aQueues[0]), pMBlk))
977	RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Called from %s.\n",
978	__PRETTY_FUNCTION__);
979	vbmsSolClose(RD(&aQueues[1]), 0, NULL);
980	freemsg(pMBlk);
981	}
982
983
984	/** Simulate sending follow-on IOCData messages to a transparent IOCtl to WPut
985	* with the parameters from table line @a i. */
986	void testWPutIOCDataOut(RTTEST hTest, unsigned i)
987	{
988	queue_t aQueues[2];
989	dev_t device = 0;
990	struct msgb *pMBlk = allocb(sizeof(struct copyresp), BPRI_MED);
991	struct copyresp pCopyResp = pMBlk ? (struct copyresp )pMBlk->b_rptr
992	: NULL;
993	int rc, cFormat = 0;
994
995	AssertReturnVoid(pMBlk);
996	AssertReturnVoidStmt(g_asTestWPut[i].cbDataOut, freemsg(pMBlk));
997	RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "%s: i=%u\n", __PRETTY_FUNCTION__,
998	i);
999	RT_ZERO(aQueues);
1000	doInitQueues(&aQueues[0]);
1001	rc = vbmsSolOpen(RD(&aQueues[0]), &device, 0, 0, NULL);
1002	RTTEST_CHECK_MSG(hTest, rc == 0, (hTest, "i=%u, rc=%d\n", i, rc));
1003	RTTEST_CHECK_MSG(hTest, g_OpenNodeState.pWriteQueue
1004	== WR(&aQueues[0]), (hTest, "i=%u\n", i));
1005	pMBlk->b_datap->db_type = M_IOCDATA;
1006	pCopyResp->cp_cmd = g_asTestWPut[i].iIOCCmd;
1007	rc = vbmsSolWPut(WR(&aQueues[0]), pMBlk);
1008	RTTEST_CHECK_MSG(hTest, pMBlk->b_datap->db_type == M_IOCACK,
1009	(hTest, "i=%u, db_type=%u\n", i,
1010	(unsigned) pMBlk->b_datap->db_type));
1011	if (!g_asTestWPut[i].rcExp)
1012	RTTEST_CHECK_MSG(hTest, RD(&aQueues[0])->q_first == pMBlk,
1013	(hTest, "i=%u\n", i));
1014	vbmsSolClose(RD(&aQueues[1]), 0, NULL);
1015	freemsg(pMBlk);
1016	}
1017	#endif
1018
1019
1020	/** Data transfer direction of an IOCtl. This is used for describing
1021	* transparent IOCtls, and @a UNSPECIFIED is not a valid value for them. */
1022	enum IOCTLDIRECTION
1023	{
1024	/** This IOCtl transfers no data. */
1025	NONE,
1026	/** This IOCtl only transfers data from user to kernel. */
1027	IN,
1028	/** This IOCtl only transfers data from kernel to user. */
1029	OUT,
1030	/** This IOCtl transfers data from user to kernel and back. */
1031	BOTH,
1032	/** We aren't saying anything about how the IOCtl transfers data. */
1033	UNSPECIFIED
1034	};
1035
1036	/**
1037	* IOCtl handler function.
1038	* @returns 0 on success, error code on failure.
1039	* @param iCmd The IOCtl command number.
1040	* @param pvData Buffer for the user data.
1041	* @param cbBuffer Size of the buffer in @a pvData or zero.
1042	* @param pcbData Where to set the size of the data returned. Required for
1043	* handlers which return data.
1044	* @param prc Where to store the return code. Default is zero. Only
1045	* used for IOCtls without data for convenience of
1046	* implemention.
1047	*/
1048	typedef int FNVBMSSOLIOCTL(PVBMSSTATE pState, int iCmd, void *pvData,
1049	size_t cbBuffer, size_t pcbData, int prc);
1050	typedef FNVBMSSOLIOCTL *PFNVBMSSOLIOCTL;
1051
1052	/* Helpers for vbmsSolDispatchIOCtl. */
1053	static int vbmsSolHandleIOCtl(PVBMSSTATE pState, mblk_t *pMBlk,
1054	PFNVBMSSOLIOCTL pfnHandler,
1055	int iCmd, size_t cbCmd,
1056	enum IOCTLDIRECTION enmDirection);
1057	static int vbmsSolVUIDIOCtl(PVBMSSTATE pState, int iCmd, void *pvData,
1058	size_t cbBuffer, size_t pcbData, int prc);
1059
1060	/** Table of supported VUID IOCtls. */
1061	struct
1062	{
1063	/** The IOCtl number. */
1064	int iCmd;
1065	/** The size of the buffer which needs to be copied between user and kernel
1066	* space, or zero if unknown (must be known for tranparent IOCtls). */
1067	size_t cbBuffer;
1068	/** The direction the buffer data needs to be copied. This must be
1069	* specified for transparent IOCtls. */
1070	enum IOCTLDIRECTION enmDirection;
1071	} g_aVUIDIOCtlDescriptions[] =
1072	{
1073	{ VUIDGFORMAT, sizeof(int), OUT },
1074	{ VUIDSFORMAT, sizeof(int), IN },
1075	{ VUIDGADDR, 0, UNSPECIFIED },
1076	{ VUIDGADDR, 0, UNSPECIFIED },
1077	{ MSIOGETPARMS, sizeof(Ms_parms), OUT },
1078	{ MSIOSETPARMS, sizeof(Ms_parms), IN },
1079	{ MSIOSRESOLUTION, sizeof(Ms_screen_resolution), IN },
1080	{ MSIOBUTTONS, sizeof(int), OUT },
1081	{ VUIDGWHEELCOUNT, sizeof(int), OUT },
1082	{ VUIDGWHEELINFO, 0, UNSPECIFIED },
1083	{ VUIDGWHEELSTATE, 0, UNSPECIFIED },
1084	{ VUIDSWHEELSTATE, 0, UNSPECIFIED }
1085	};
1086
1087	/**
1088	* Handle a STREAMS IOCtl message for our driver on the write stream. This
1089	* function takes care of the IOCtl logic only and does not call qreply() or
1090	* miocnak() at all - the caller must call these on success or failure
1091	* respectively.
1092	* @returns 0 on success or the IOCtl error code on failure.
1093	* @param pState pointer to the state structure.
1094	* @param pMBlk pointer to the STREAMS message block structure.
1095	*/
1096	static int vbmsSolDispatchIOCtl(PVBMSSTATE pState, mblk_t *pMBlk)
1097	{
1098	struct iocblk pIOCBlk = (struct iocblk )pMBlk->b_rptr;
1099	int iCmd = pIOCBlk->ioc_cmd, iCmdType = iCmd & (0xff << 8);
1100	size_t cbBuffer;
1101	enum IOCTLDIRECTION enmDirection;
1102
1103	LogRelFlowFunc((DEVICE_NAME "::pIOCBlk=%p, iCmdType=%c, iCmd=0x%x\n",
1104	pIOCBlk, (char) (iCmdType >> 8), (unsigned)iCmd));
1105	switch (iCmdType)
1106	{
1107	case MSIOC:
1108	case VUIOC:
1109	{
1110	unsigned i;
1111
1112	for (i = 0; i < RT_ELEMENTS(g_aVUIDIOCtlDescriptions); ++i)
1113	if (g_aVUIDIOCtlDescriptions[i].iCmd == iCmd)
1114	{
1115	cbBuffer = g_aVUIDIOCtlDescriptions[i].cbBuffer;
1116	enmDirection = g_aVUIDIOCtlDescriptions[i].enmDirection;
1117	return vbmsSolHandleIOCtl(pState, pMBlk,
1118	vbmsSolVUIDIOCtl, iCmd,
1119	cbBuffer, enmDirection);
1120	}
1121	return EINVAL;
1122	}
1123	default:
1124	return ENOTTY;
1125	}
1126	}
1127
1128
1129	/* Helpers for vbmsSolHandleIOCtl. */
1130	static int vbmsSolHandleIOCtlData(PVBMSSTATE pState, mblk_t *pMBlk,
1131	PFNVBMSSOLIOCTL pfnHandler, int iCmd,
1132	size_t cbCmd,
1133	enum IOCTLDIRECTION enmDirection);
1134
1135	static int vbmsSolHandleTransparentIOCtl(PVBMSSTATE pState, mblk_t *pMBlk,
1136	PFNVBMSSOLIOCTL pfnHandler,
1137	int iCmd, size_t cbCmd,
1138	enum IOCTLDIRECTION enmDirection);
1139
1140	static int vbmsSolHandleIStrIOCtl(PVBMSSTATE pState, mblk_t *pMBlk,
1141	PFNVBMSSOLIOCTL pfnHandler, int iCmd);
1142
1143	static void vbmsSolAcknowledgeIOCtl(mblk_t *pMBlk, int cbData, int rc)
1144	{
1145	struct iocblk pIOCBlk = (struct iocblk )pMBlk->b_rptr;
1146
1147	pMBlk->b_datap->db_type = M_IOCACK;
1148	pIOCBlk->ioc_count = cbData;
1149	pIOCBlk->ioc_rval = rc;
1150	pIOCBlk->ioc_error = 0;
1151	}
1152
1153	/**
1154	* Generic code for handling STREAMS-specific IOCtl logic and boilerplate. It
1155	* calls the IOCtl handler passed to it without the handler having to be aware
1156	* of STREAMS structures, or whether this is a transparent (traditional) or an
1157	* I_STR (using a STREAMS structure to describe the data) IOCtl. With the
1158	* caveat that we only support transparent IOCtls which pass all data in a
1159	* single buffer of a fixed size (I_STR IOCtls are restricted to a single
1160	* buffer anyway, but the caller can choose the buffer size).
1161	* @returns 0 on success or the IOCtl error code on failure.
1162	* @param pState pointer to the state structure.
1163	* @param pMBlk pointer to the STREAMS message block structure.
1164	* @param pfnHandler pointer to the right IOCtl handler function for this
1165	* IOCtl number.
1166	* @param iCmd IOCtl command number.
1167	* @param cbCmd size of the user space buffer for this IOCtl number,
1168	* used for processing transparent IOCtls. Pass zero
1169	* for IOCtls with no maximum buffer size (which will
1170	* not be able to be handled as transparent) or with
1171	* no argument.
1172	* @param enmDirection data transfer direction of the IOCtl.
1173	*/
1174	static int vbmsSolHandleIOCtl(PVBMSSTATE pState, mblk_t *pMBlk,
1175	PFNVBMSSOLIOCTL pfnHandler, int iCmd,
1176	size_t cbCmd, enum IOCTLDIRECTION enmDirection)
1177	{
1178	struct iocblk pIOCBlk = (struct iocblk )pMBlk->b_rptr;
1179
1180	LogFlowFunc(("iCmd=0x%x, cbBuffer=%d, enmDirection=%d\n",
1181	(unsigned)iCmd, (int)cbCmd, (int)enmDirection));
1182	if (pMBlk->b_datap->db_type == M_IOCDATA)
1183	return vbmsSolHandleIOCtlData(pState, pMBlk, pfnHandler, iCmd,
1184	cbCmd, enmDirection);
1185	else if ( pMBlk->b_datap->db_type == M_IOCTL
1186	&& pIOCBlk->ioc_count == TRANSPARENT)
1187	return vbmsSolHandleTransparentIOCtl(pState, pMBlk, pfnHandler,
1188	iCmd, cbCmd, enmDirection);
1189	else if (pMBlk->b_datap->db_type == M_IOCTL)
1190	return vbmsSolHandleIStrIOCtl(pState, pMBlk, pfnHandler, iCmd);
1191	return EINVAL;
1192	}
1193
1194
1195	/**
1196	* Helper for vbmsSolHandleIOCtl. This rather complicated-looking
1197	* code is basically the standard boilerplate for handling any streams IOCtl
1198	* additional data, which we currently only use for transparent IOCtls.
1199	* @copydoc vbmsSolHandleIOCtl
1200	*/
1201	static int vbmsSolHandleIOCtlData(PVBMSSTATE pState, mblk_t *pMBlk,
1202	PFNVBMSSOLIOCTL pfnHandler, int iCmd,
1203	size_t cbCmd,
1204	enum IOCTLDIRECTION enmDirection)
1205	{
1206	struct copyresp pCopyResp = (struct copyresp )pMBlk->b_rptr;
1207
1208	LogFlowFunc(("iCmd=0x%x, cbBuffer=%d, enmDirection=%d, cp_rval=%d, cp_private=%p\n",
1209	(unsigned)iCmd, (int)cbCmd, (int)enmDirection,
1210	(int)(uintptr_t)pCopyResp->cp_rval,
1211	(void *)pCopyResp->cp_private));
1212	if (pCopyResp->cp_rval) /* cp_rval is a pointer used as a boolean. */
1213	return EAGAIN;
1214	if ((pCopyResp->cp_private && enmDirection == BOTH) \|\| enmDirection == IN)
1215	{
1216	size_t cbData = 0;
1217	void *pvData = NULL;
1218	int err;
1219
1220	if (!pMBlk->b_cont)
1221	return EINVAL;
1222	pvData = pMBlk->b_cont->b_rptr;
1223	err = pfnHandler(pState, iCmd, pvData, cbCmd, &cbData, NULL);
1224	if (!err && enmDirection == BOTH)
1225	mcopyout(pMBlk, NULL, cbData, pCopyResp->cp_private, NULL);
1226	else if (!err && enmDirection == IN)
1227	vbmsSolAcknowledgeIOCtl(pMBlk, 0, 0);
1228	if ((err \|\| enmDirection == IN) && pCopyResp->cp_private)
1229	freemsg(pCopyResp->cp_private);
1230	return err;
1231	}
1232	else
1233	{
1234	if (pCopyResp->cp_private)
1235	freemsg(pCopyResp->cp_private);
1236	AssertReturn(enmDirection == OUT \|\| enmDirection == BOTH, EINVAL);
1237	vbmsSolAcknowledgeIOCtl(pMBlk, 0, 0);
1238	return 0;
1239	}
1240	}
1241
1242	/**
1243	* Helper for vbmsSolHandleIOCtl. This rather complicated-looking
1244	* code is basically the standard boilerplate for handling transparent IOCtls,
1245	* that is, IOCtls which are not re-packed inside STREAMS IOCtls.
1246	* @copydoc vbmsSolHandleIOCtl
1247	*/
1248	int vbmsSolHandleTransparentIOCtl(PVBMSSTATE pState, mblk_t *pMBlk,
1249	PFNVBMSSOLIOCTL pfnHandler, int iCmd,
1250	size_t cbCmd,
1251	enum IOCTLDIRECTION enmDirection)
1252	{
1253	int err = 0, rc = 0;
1254	size_t cbData = 0;
1255
1256	LogFlowFunc(("iCmd=0x%x, cbBuffer=%d, enmDirection=%d\n",
1257	(unsigned)iCmd, (int)cbCmd, (int)enmDirection));
1258	if ( (enmDirection != NONE && !pMBlk->b_cont)
1259	\|\| enmDirection == UNSPECIFIED)
1260	return EINVAL;
1261	if (enmDirection == IN \|\| enmDirection == BOTH)
1262	{
1263	void *pUserAddr = NULL;
1264	/* We only need state data if there is something to copy back. */
1265	if (enmDirection == BOTH)
1266	pUserAddr = (void *)pMBlk->b_cont->b_rptr;
1267	mcopyin(pMBlk, pUserAddr /* state data */, cbCmd, NULL);
1268	}
1269	else if (enmDirection == OUT)
1270	{
1271	mblk_t *pMBlkOut = allocb(cbCmd, BPRI_MED);
1272	void *pvData;
1273
1274	if (!pMBlkOut)
1275	return EAGAIN;
1276	pvData = pMBlkOut->b_rptr;
1277	err = pfnHandler(pState, iCmd, pvData, cbCmd, &cbData, NULL);
1278	if (!err)
1279	mcopyout(pMBlk, NULL, cbData, NULL, pMBlkOut);
1280	else
1281	freemsg(pMBlkOut);
1282	}
1283	else
1284	{
1285	AssertReturn(enmDirection == NONE, EINVAL);
1286	err = pfnHandler(pState, iCmd, NULL, 0, NULL, &rc);
1287	if (!err)
1288	vbmsSolAcknowledgeIOCtl(pMBlk, 0, rc);
1289	}
1290	return err;
1291	}
1292
1293	/**
1294	* Helper for vbmsSolHandleIOCtl. This rather complicated-looking
1295	* code is basically the standard boilerplate for handling any streams IOCtl.
1296	* @copydoc vbmsSolHandleIOCtl
1297	*/
1298	static int vbmsSolHandleIStrIOCtl(PVBMSSTATE pState, mblk_t *pMBlk,
1299	PFNVBMSSOLIOCTL pfnHandler, int iCmd)
1300	{
1301	struct iocblk pIOCBlk = (struct iocblk )pMBlk->b_rptr;
1302	uint_t cbBuffer = pIOCBlk->ioc_count;
1303	void *pvData = NULL;
1304	int err, rc = 0;
1305	size_t cbData = 0;
1306
1307	LogFlowFunc(("iCmd=0x%x, cbBuffer=%u, b_cont=%p\n",
1308	(unsigned)iCmd, cbBuffer, (void *)pMBlk->b_cont));
1309	if (cbBuffer && !pMBlk->b_cont)
1310	return EINVAL;
1311	/* Repack the whole buffer into a single message block if needed. */
1312	if (cbBuffer)
1313	{
1314	err = miocpullup(pMBlk, cbBuffer);
1315	if (err)
1316	return err;
1317	pvData = pMBlk->b_cont->b_rptr;
1318	}
1319	else if (pMBlk->b_cont) /* consms forgets to set ioc_count. */
1320	{
1321	pvData = pMBlk->b_cont->b_rptr;
1322	cbBuffer = pMBlk->b_cont->b_datap->db_lim
1323	- pMBlk->b_cont->b_datap->db_base;
1324	}
1325	err = pfnHandler(pState, iCmd, pvData, cbBuffer, &cbData, &rc);
1326	if (!err)
1327	{
1328	LogRelFlowFunc(("pMBlk=%p, pMBlk->b_datap=%p, pMBlk->b_rptr=%p\n",
1329	pMBlk, pMBlk->b_datap, pMBlk->b_rptr));
1330	vbmsSolAcknowledgeIOCtl(pMBlk, cbData, rc);
1331	}
1332	return err;
1333	}
1334
1335
1336	/**
1337	* Handle a VUID input device IOCtl.
1338	* @copydoc FNVBMSSOLIOCTL
1339	*/
1340	static int vbmsSolVUIDIOCtl(PVBMSSTATE pState, int iCmd, void *pvData,
1341	size_t cbBuffer, size_t pcbData, int prc)
1342	{
1343	LogRelFlowFunc((DEVICE_NAME "::pvData=%p " /* no '\n' */, pvData));
1344	switch (iCmd)
1345	{
1346	case VUIDGFORMAT:
1347	{
1348	LogRelFlowFunc(("VUIDGFORMAT\n"));
1349	if (cbBuffer < sizeof(int))
1350	return EINVAL;
1351	(int )pvData = VUID_FIRM_EVENT;
1352	*pcbData = sizeof(int);
1353	return 0;
1354	}
1355	case VUIDSFORMAT:
1356	LogRelFlowFunc(("VUIDSFORMAT\n"));
1357	/* We define our native format to be VUID_FIRM_EVENT, so there
1358	* is nothing more to do and we exit here on success or on
1359	* failure. */
1360	return 0;
1361	case VUIDGADDR:
1362	case VUIDSADDR:
1363	LogRelFlowFunc(("VUIDGADDR/VUIDSADDR\n"));
1364	return ENOTTY;
1365	case MSIOGETPARMS:
1366	{
1367	Ms_parms parms = { 0 };
1368
1369	LogRelFlowFunc(("MSIOGETPARMS\n"));
1370	if (cbBuffer < sizeof(Ms_parms))
1371	return EINVAL;
1372	(Ms_parms )pvData = parms;
1373	*pcbData = sizeof(Ms_parms);
1374	return 0;
1375	}
1376	case MSIOSETPARMS:
1377	LogRelFlowFunc(("MSIOSETPARMS\n"));
1378	return 0;
1379	case MSIOSRESOLUTION:
1380	{
1381	Ms_screen_resolution pResolution = (Ms_screen_resolution )pvData;
1382	int rc;
1383
1384	LogRelFlowFunc(("MSIOSRESOLUTION, cbBuffer=%d, sizeof(Ms_screen_resolution)=%d\n",
1385	(int) cbBuffer,
1386	(int) sizeof(Ms_screen_resolution)));
1387	if (cbBuffer < sizeof(Ms_screen_resolution))
1388	return EINVAL;
1389	LogRelFlowFunc(("%dx%d\n", pResolution->width,
1390	pResolution->height));
1391	pState->cMaxScreenX = pResolution->width - 1;
1392	pState->cMaxScreenY = pResolution->height - 1;
1393	/* Note: we don't disable this again until session close. */
1394	rc = VbglR0SetMouseStatus( VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE
1395	\| VMMDEV_MOUSE_NEW_PROTOCOL);
1396	if (RT_SUCCESS(rc))
1397	return 0;
1398	pState->cMaxScreenX = 0;
1399	pState->cMaxScreenY = 0;
1400	return ENODEV;
1401	}
1402	case MSIOBUTTONS:
1403	{
1404	LogRelFlowFunc(("MSIOBUTTONS\n"));
1405	if (cbBuffer < sizeof(int))
1406	return EINVAL;
1407	(int )pvData = 0;
1408	*pcbData = sizeof(int);
1409	return 0;
1410	}
1411	case VUIDGWHEELCOUNT:
1412	{
1413	LogRelFlowFunc(("VUIDGWHEELCOUNT\n"));
1414	if (cbBuffer < sizeof(int))
1415	return EINVAL;
1416	(int )pvData = 0;
1417	*pcbData = sizeof(int);
1418	return 0;
1419	}
1420	case VUIDGWHEELINFO:
1421	case VUIDGWHEELSTATE:
1422	case VUIDSWHEELSTATE:
1423	LogRelFlowFunc(("VUIDGWHEELINFO/VUIDGWHEELSTATE/VUIDSWHEELSTATE\n"));
1424	return EINVAL;
1425	default:
1426	LogRelFlowFunc(("Invalid IOCtl command %x\n", iCmd));
1427	return EINVAL;
1428	}
1429	}
1430
1431
1432	#ifdef TESTCASE
1433	int main(void)
1434	{
1435	RTTEST hTest;
1436	int rc = RTTestInitAndCreate("tstVBoxGuest-solaris", &hTest);
1437	if (rc)
1438	return rc;
1439	RTTestBanner(hTest);
1440	test_init(hTest);
1441	testOpenClose(hTest);
1442	testWPut(hTest);
1443
1444	/*
1445	* Summary.
1446	*/
1447	return RTTestSummaryAndDestroy(hTest);
1448	}
1449	#endif
1450

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source: vbox/trunk/src/VBox/Additions/solaris/Mouse/vboxms.c@ 101359

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