SUPDrv-solaris.c@ 16905

Last change on this file since 16905 was 16905, checked in by vboxsync, 16 years ago
Solaris/VBoxUSB: removed gxx_personality hack.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 26.5 KB

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1	/* $Id: SUPDrv-solaris.c 16905 2009-02-18 14:45:18Z vboxsync $ */
2	/** @file
3	* VBoxDrv - The VirtualBox Support Driver - Solaris specifics.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31	/*******************************************************************************
32	* Header Files *
33	*******************************************************************************/
34	#define LOG_GROUP LOG_GROUP_SUP_DRV
35	#include <sys/types.h>
36	#include <sys/param.h>
37	#include <sys/errno.h>
38	#include <sys/uio.h>
39	#include <sys/buf.h>
40	#include <sys/modctl.h>
41	#include <sys/open.h>
42	#include <sys/conf.h>
43	#include <sys/cmn_err.h>
44	#include <sys/stat.h>
45	#include <sys/ddi.h>
46	#include <sys/sunddi.h>
47	#include <sys/file.h>
48	#include <sys/priv_names.h>
49	#undef u /* /usr/include/sys/user.h:249:1 is where this is defined to (curproc->p_user). very cool. */
50
51	#include "../SUPDrvInternal.h"
52	#include <VBox/log.h>
53	#include <VBox/version.h>
54	#include <iprt/semaphore.h>
55	#include <iprt/spinlock.h>
56	#include <iprt/mp.h>
57	#include <iprt/process.h>
58	#include <iprt/thread.h>
59	#include <iprt/initterm.h>
60	#include <iprt/alloc.h>
61	#include <iprt/string.h>
62	#include <iprt/err.h>
63
64
65	/*******************************************************************************
66	* Defined Constants And Macros *
67	*******************************************************************************/
68	/** @todo this quoting macros probably should be moved to a common place.
69	* The indirection is for expanding macros passed to the first macro. */
70	#define VBOXSOLQUOTE2(x) #x
71	#define VBOXSOLQUOTE(x) VBOXSOLQUOTE2(x)
72	/** The module name. */
73	#define DEVICE_NAME "vboxdrv"
74	/** The module description as seen in 'modinfo'. */
75	#define DEVICE_DESC "VirtualBox HostDrv"
76	/** Maximum number of driver instances. */
77	#define DEVICE_MAXINSTANCES 16
78
79
80	/*******************************************************************************
81	* Internal Functions *
82	*******************************************************************************/
83	static int VBoxDrvSolarisOpen(dev_t pDev, int fFlag, int fType, cred_t pCred);
84	static int VBoxDrvSolarisClose(dev_t Dev, int fFlag, int fType, cred_t *pCred);
85	static int VBoxDrvSolarisRead(dev_t Dev, struct uio pUio, cred_t pCred);
86	static int VBoxDrvSolarisWrite(dev_t Dev, struct uio pUio, cred_t pCred);
87	static int VBoxDrvSolarisIOCtl(dev_t Dev, int Cmd, intptr_t pArgs, int mode, cred_t pCred, int pVal);
88
89	static int VBoxDrvSolarisAttach(dev_info_t *pDip, ddi_attach_cmd_t Cmd);
90	static int VBoxDrvSolarisDetach(dev_info_t *pDip, ddi_detach_cmd_t Cmd);
91
92	static int VBoxSupDrvErr2SolarisErr(int rc);
93	static int VBoxDrvSolarisIOCtlSlow(PSUPDRVSESSION pSession, int Cmd, int Mode, intptr_t pArgs);
94
95
96	/*******************************************************************************
97	* Global Variables *
98	*******************************************************************************/
99	/**
100	* cb_ops: for drivers that support char/block entry points
101	*/
102	static struct cb_ops g_VBoxDrvSolarisCbOps =
103	{
104	VBoxDrvSolarisOpen,
105	VBoxDrvSolarisClose,
106	nodev, /* b strategy */
107	nodev, /* b dump */
108	nodev, /* b print */
109	VBoxDrvSolarisRead,
110	VBoxDrvSolarisWrite,
111	VBoxDrvSolarisIOCtl,
112	nodev, /* c devmap */
113	nodev, /* c mmap */
114	nodev, /* c segmap */
115	nochpoll, /* c poll */
116	ddi_prop_op, /* property ops */
117	NULL, /* streamtab */
118	D_NEW \| D_MP, /* compat. flag */
119	CB_REV /* revision */
120	};
121
122	/**
123	* dev_ops: for driver device operations
124	*/
125	static struct dev_ops g_VBoxDrvSolarisDevOps =
126	{
127	DEVO_REV, /* driver build revision */
128	0, /* ref count */
129	nulldev, /* get info */
130	nulldev, /* identify */
131	nulldev, /* probe */
132	VBoxDrvSolarisAttach,
133	VBoxDrvSolarisDetach,
134	nodev, /* reset */
135	&g_VBoxDrvSolarisCbOps,
136	(struct bus_ops *)0,
137	nodev /* power */
138	};
139
140	/**
141	* modldrv: export driver specifics to the kernel
142	*/
143	static struct modldrv g_VBoxDrvSolarisModule =
144	{
145	&mod_driverops, /* extern from kernel */
146	DEVICE_DESC " " VBOX_VERSION_STRING "r" VBOXSOLQUOTE(VBOX_SVN_REV),
147	&g_VBoxDrvSolarisDevOps
148	};
149
150	/**
151	* modlinkage: export install/remove/info to the kernel
152	*/
153	static struct modlinkage g_VBoxDrvSolarisModLinkage =
154	{
155	MODREV_1, /* loadable module system revision */
156	&g_VBoxDrvSolarisModule,
157	NULL /* terminate array of linkage structures */
158	};
159
160	#ifndef USE_SESSION_HASH
161	/**
162	* State info for each open file handle.
163	*/
164	typedef struct
165	{
166	/*< Pointer to the session data. /
167	PSUPDRVSESSION pSession;
168	} vbox_devstate_t;
169	#else
170	/** State info. for each driver instance. */
171	typedef struct
172	{
173	dev_info_t pDip; / Device handle */
174	} vbox_devstate_t;
175	#endif
176
177	/** Opaque pointer to list of state */
178	static void *g_pVBoxDrvSolarisState;
179
180	/** Device extention & session data association structure */
181	static SUPDRVDEVEXT g_DevExt;
182
183	/** Hash table */
184	static PSUPDRVSESSION g_apSessionHashTab[19];
185	/** Spinlock protecting g_apSessionHashTab. */
186	static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
187	/** Calculates bucket index into g_apSessionHashTab.*/
188	#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab))
189
190	/**
191	* Kernel entry points
192	*/
193	int _init(void)
194	{
195	LogFlow((DEVICE_NAME ":_init\n"));
196
197	/*
198	* Prevent module autounloading.
199	*/
200	modctl_t *pModCtl = mod_getctl(&g_VBoxDrvSolarisModLinkage);
201	if (pModCtl)
202	pModCtl->mod_loadflags \|= MOD_NOAUTOUNLOAD;
203	else
204	LogRel((DEVICE_NAME ":failed to disable autounloading!\n"));
205
206	/*
207	* Initialize IPRT R0 driver, which internally calls OS-specific r0 init.
208	*/
209	int rc = RTR0Init(0);
210	if (RT_SUCCESS(rc))
211	{
212	/*
213	* Initialize the device extension
214	*/
215	rc = supdrvInitDevExt(&g_DevExt);
216	if (RT_SUCCESS(rc))
217	{
218	/*
219	* Initialize the session hash table.
220	*/
221	memset(g_apSessionHashTab, 0, sizeof(g_apSessionHashTab));
222	rc = RTSpinlockCreate(&g_Spinlock);
223	if (RT_SUCCESS(rc))
224	{
225	int rc = ddi_soft_state_init(&g_pVBoxDrvSolarisState, sizeof(vbox_devstate_t), 8);
226	if (!rc)
227	{
228	rc = mod_install(&g_VBoxDrvSolarisModLinkage);
229	if (!rc)
230	return rc; /* success */
231
232	ddi_soft_state_fini(&g_pVBoxDrvSolarisState);
233	LogRel((DEVICE_NAME ":mod_install failed! rc=%d\n", rc));
234	}
235	else
236	LogRel((DEVICE_NAME ":failed to initialize soft state.\n"));
237
238	RTSpinlockDestroy(g_Spinlock);
239	g_Spinlock = NIL_RTSPINLOCK;
240	}
241	else
242	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: RTSpinlockCreate failed\n"));
243	supdrvDeleteDevExt(&g_DevExt);
244	}
245	else
246	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: supdrvInitDevExt failed\n"));
247	RTR0Term();
248	}
249	else
250	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: failed to init R0Drv\n"));
251	memset(&g_DevExt, 0, sizeof(g_DevExt));
252
253	return RTErrConvertToErrno(rc);
254	}
255
256
257	int _fini(void)
258	{
259	LogFlow((DEVICE_NAME ":_fini\n"));
260
261	/*
262	* Undo the work we did at start (in the reverse order).
263	*/
264	int rc = mod_remove(&g_VBoxDrvSolarisModLinkage);
265	if (rc != 0)
266	return rc;
267
268	supdrvDeleteDevExt(&g_DevExt);
269
270	rc = RTSpinlockDestroy(g_Spinlock);
271	AssertRC(rc);
272	g_Spinlock = NIL_RTSPINLOCK;
273
274	RTR0Term();
275
276	memset(&g_DevExt, 0, sizeof(g_DevExt));
277
278	ddi_soft_state_fini(&g_pVBoxDrvSolarisState);
279	return 0;
280	}
281
282
283	int _info(struct modinfo *pModInfo)
284	{
285	LogFlow((DEVICE_NAME ":_info\n"));
286	int e = mod_info(&g_VBoxDrvSolarisModLinkage, pModInfo);
287	return e;
288	}
289
290
291	/**
292	* Attach entry point, to attach a device to the system or resume it.
293	*
294	* @param pDip The module structure instance.
295	* @param enmCmd Operation type (attach/resume).
296	*
297	* @return corresponding solaris error code.
298	*/
299	static int VBoxDrvSolarisAttach(dev_info_t *pDip, ddi_attach_cmd_t enmCmd)
300	{
301	LogFlow((DEVICE_NAME ":VBoxDrvSolarisAttach\n"));
302
303	switch (enmCmd)
304	{
305	case DDI_ATTACH:
306	{
307	int rc;
308	int instance = ddi_get_instance(pDip);
309	#ifdef USE_SESSION_HASH
310	vbox_devstate_t *pState;
311
312	if (ddi_soft_state_zalloc(g_pVBoxDrvSolarisState, instance) != DDI_SUCCESS)
313	{
314	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: state alloc failed\n"));
315	return DDI_FAILURE;
316	}
317
318	pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, instance);
319	#endif
320
321	/*
322	* Register ourselves as a character device, pseudo-driver
323	*/
324	#ifdef VBOX_WITH_HARDENING
325	rc = ddi_create_priv_minor_node(pDip, DEVICE_NAME, S_IFCHR, instance, DDI_PSEUDO,
326	0, NULL, NULL, 0600);
327	#else
328	rc = ddi_create_priv_minor_node(pDip, DEVICE_NAME, S_IFCHR, instance, DDI_PSEUDO,
329	0, "none", "none", 0666);
330	#endif
331	if (rc == DDI_SUCCESS)
332	{
333	#ifdef USE_SESSION_HASH
334	pState->pDip = pDip;
335	#endif
336	ddi_report_dev(pDip);
337	return DDI_SUCCESS;
338	}
339
340	return DDI_FAILURE;
341	}
342
343	case DDI_RESUME:
344	{
345	RTSemFastMutexRequest(g_DevExt.mtxGip);
346	if (g_DevExt.pGipTimer)
347	RTTimerStart(g_DevExt.pGipTimer, 0);
348
349	RTSemFastMutexRelease(g_DevExt.mtxGip);
350	return DDI_SUCCESS;
351	}
352
353	default:
354	return DDI_FAILURE;
355	}
356
357	return DDI_FAILURE;
358	}
359
360
361	/**
362	* Detach entry point, to detach a device to the system or suspend it.
363	*
364	* @param pDip The module structure instance.
365	* @param enmCmd Operation type (detach/suspend).
366	*
367	* @return corresponding solaris error code.
368	*/
369	static int VBoxDrvSolarisDetach(dev_info_t *pDip, ddi_detach_cmd_t enmCmd)
370	{
371	int rc = VINF_SUCCESS;
372
373	LogFlow((DEVICE_NAME ":VBoxDrvSolarisDetach\n"));
374	switch (enmCmd)
375	{
376	case DDI_DETACH:
377	{
378	int instance = ddi_get_instance(pDip);
379	#ifndef USE_SESSION_HASH
380	ddi_remove_minor_node(pDip, NULL);
381	#else
382	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, instance);
383	ddi_remove_minor_node(pDip, NULL);
384	ddi_soft_state_free(g_pVBoxDrvSolarisState, instance);
385	#endif
386	return DDI_SUCCESS;
387	}
388
389	case DDI_SUSPEND:
390	{
391	RTSemFastMutexRequest(g_DevExt.mtxGip);
392	if (g_DevExt.pGipTimer && g_DevExt.cGipUsers > 0)
393	RTTimerStop(g_DevExt.pGipTimer);
394
395	RTSemFastMutexRelease(g_DevExt.mtxGip);
396	return DDI_SUCCESS;
397	}
398
399	default:
400	return DDI_FAILURE;
401	}
402	}
403
404
405
406	/**
407	* User context entry points
408	*/
409	static int VBoxDrvSolarisOpen(dev_t pDev, int fFlag, int fType, cred_t pCred)
410	{
411	int rc;
412	PSUPDRVSESSION pSession;
413	LogFlow((DEVICE_NAME ":VBoxDrvSolarisOpen: pDev=%p:%#x\n", pDev, *pDev));
414
415	#ifndef USE_SESSION_HASH
416	/*
417	* Locate a new device open instance.
418	*
419	* For each open call we'll allocate an item in the soft state of the device.
420	* The item index is stored in the dev_t. I hope this is ok...
421	*/
422	vbox_devstate_t *pState = NULL;
423	unsigned iOpenInstance;
424	for (iOpenInstance = 0; iOpenInstance < 4096; iOpenInstance++)
425	{
426	if ( !ddi_get_soft_state(g_pVBoxDrvSolarisState, iOpenInstance) /* faster */
427	&& ddi_soft_state_zalloc(g_pVBoxDrvSolarisState, iOpenInstance) == DDI_SUCCESS)
428	{
429	pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, iOpenInstance);
430	break;
431	}
432	}
433	if (!pState)
434	{
435	LogRel((DEVICE_NAME ":VBoxDrvSolarisOpen: too many open instances.\n"));
436	return ENXIO;
437	}
438
439	/*
440	* Create a new session.
441	*/
442	rc = supdrvCreateSession(&g_DevExt, true /* fUser */, &pSession);
443	if (RT_SUCCESS(rc))
444	{
445	pSession->Uid = crgetruid(pCred);
446	pSession->Gid = crgetrgid(pCred);
447
448	pState->pSession = pSession;
449	pDev = makedevice(getmajor(pDev), iOpenInstance);
450	LogFlow((DEVICE_NAME ":VBoxDrvSolarisOpen: Dev=%#x pSession=%p pid=%d r0proc=%p thread=%p\n",
451	*pDev, pSession, RTProcSelf(), RTR0ProcHandleSelf(), RTThreadNativeSelf() ));
452	return 0;
453	}
454
455	/* failed - clean up */
456	ddi_soft_state_free(g_pVBoxDrvSolarisState, iOpenInstance);
457
458	#else
459	/*
460	* Create a new session.
461	* Sessions in Solaris driver are mostly useless. It's however needed
462	* in VBoxDrvSolarisIOCtlSlow() while calling supdrvIOCtl()
463	*/
464	rc = supdrvCreateSession(&g_DevExt, true /* fUser */, &pSession);
465	if (RT_SUCCESS(rc))
466	{
467	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
468	unsigned iHash;
469
470	pSession->Uid = crgetruid(pCred);
471	pSession->Gid = crgetrgid(pCred);
472
473	/*
474	* Insert it into the hash table.
475	*/
476	iHash = SESSION_HASH(pSession->Process);
477	RTSpinlockAcquireNoInts(g_Spinlock, &Tmp);
478	pSession->pNextHash = g_apSessionHashTab[iHash];
479	g_apSessionHashTab[iHash] = pSession;
480	RTSpinlockReleaseNoInts(g_Spinlock, &Tmp);
481	LogFlow((DEVICE_NAME ":VBoxDrvSolarisOpen success\n"));
482	}
483
484	int instance;
485	for (instance = 0; instance < DEVICE_MAXINSTANCES; instance++)
486	{
487	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, instance);
488	if (pState)
489	break;
490	}
491
492	if (instance >= DEVICE_MAXINSTANCES)
493	{
494	LogRel((DEVICE_NAME ":VBoxDrvSolarisOpen: All instances exhausted\n"));
495	return ENXIO;
496	}
497
498	pDev = makedevice(getmajor(pDev), instance);
499
500	return VBoxSupDrvErr2SolarisErr(rc);
501	#endif
502	}
503
504
505	static int VBoxDrvSolarisClose(dev_t Dev, int flag, int otyp, cred_t *cred)
506	{
507	LogFlow((DEVICE_NAME ":VBoxDrvSolarisClose: Dev=%#x\n", Dev));
508
509	#ifndef USE_SESSION_HASH
510	/*
511	* Get the session and free the soft state item.
512	*/
513	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, getminor(Dev));
514	if (!pState)
515	{
516	LogRel((DEVICE_NAME ":VBoxDrvSolarisClose: no state data for %#x (%d)\n", Dev, getminor(Dev)));
517	return EFAULT;
518	}
519
520	PSUPDRVSESSION pSession = pState->pSession;
521	pState->pSession = NULL;
522	ddi_soft_state_free(g_pVBoxDrvSolarisState, getminor(Dev));
523
524	if (!pSession)
525	{
526	LogRel((DEVICE_NAME ":VBoxDrvSolarisClose: no session in state data for %#x (%d)\n", Dev, getminor(Dev)));
527	return EFAULT;
528	}
529	LogFlow((DEVICE_NAME ":VBoxDrvSolarisClose: Dev=%#x pSession=%p pid=%d r0proc=%p thread=%p\n",
530	Dev, pSession, RTProcSelf(), RTR0ProcHandleSelf(), RTThreadNativeSelf() ));
531
532	#else
533	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
534	const RTPROCESS Process = RTProcSelf();
535	const unsigned iHash = SESSION_HASH(Process);
536	PSUPDRVSESSION pSession;
537
538	/*
539	* Remove from the hash table.
540	*/
541	RTSpinlockAcquireNoInts(g_Spinlock, &Tmp);
542	pSession = g_apSessionHashTab[iHash];
543	if (pSession)
544	{
545	if (pSession->Process == Process)
546	{
547	g_apSessionHashTab[iHash] = pSession->pNextHash;
548	pSession->pNextHash = NULL;
549	}
550	else
551	{
552	PSUPDRVSESSION pPrev = pSession;
553	pSession = pSession->pNextHash;
554	while (pSession)
555	{
556	if (pSession->Process == Process)
557	{
558	pPrev->pNextHash = pSession->pNextHash;
559	pSession->pNextHash = NULL;
560	break;
561	}
562
563	/* next */
564	pPrev = pSession;
565	pSession = pSession->pNextHash;
566	}
567	}
568	}
569	RTSpinlockReleaseNoInts(g_Spinlock, &Tmp);
570	if (!pSession)
571	{
572	LogRel((DEVICE_NAME ":VBoxDrvSolarisClose: WHAT?!? pSession == NULL! This must be a mistake... pid=%d (close)\n",
573	(int)Process));
574	return EFAULT;
575	}
576	#endif
577
578	/*
579	* Close the session.
580	*/
581	supdrvCloseSession(&g_DevExt, pSession);
582	return 0;
583	}
584
585
586	static int VBoxDrvSolarisRead(dev_t Dev, struct uio pUio, cred_t pCred)
587	{
588	LogFlow((DEVICE_NAME ":VBoxDrvSolarisRead"));
589	return 0;
590	}
591
592
593	static int VBoxDrvSolarisWrite(dev_t Dev, struct uio pUio, cred_t pCred)
594	{
595	LogFlow((DEVICE_NAME ":VBoxDrvSolarisWrite"));
596	return 0;
597	}
598
599
600	/**
601	* Driver ioctl, an alternate entry point for this character driver.
602	*
603	* @param Dev Device number
604	* @param Cmd Operation identifier
605	* @param pArg Arguments from user to driver
606	* @param Mode Information bitfield (read/write, address space etc.)
607	* @param pCred User credentials
608	* @param pVal Return value for calling process.
609	*
610	* @return corresponding solaris error code.
611	*/
612	static int VBoxDrvSolarisIOCtl(dev_t Dev, int Cmd, intptr_t pArgs, int Mode, cred_t pCred, int pVal)
613	{
614	#ifndef USE_SESSION_HASH
615	/*
616	* Get the session from the soft state item.
617	*/
618	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, getminor(Dev));
619	if (!pState)
620	{
621	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtl: no state data for %#x (%d)\n", Dev, getminor(Dev)));
622	return EINVAL;
623	}
624
625	PSUPDRVSESSION pSession = pState->pSession;
626	if (!pSession)
627	{
628	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtl: no session in state data for %#x (%d)\n", Dev, getminor(Dev)));
629	return DDI_SUCCESS;
630	}
631	#else
632	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
633	const RTPROCESS Process = RTProcSelf();
634	const unsigned iHash = SESSION_HASH(Process);
635	PSUPDRVSESSION pSession;
636
637	/*
638	* Find the session.
639	*/
640	RTSpinlockAcquireNoInts(g_Spinlock, &Tmp);
641	pSession = g_apSessionHashTab[iHash];
642	if (pSession && pSession->Process != Process)
643	{
644	do pSession = pSession->pNextHash;
645	while (pSession && pSession->Process != Process);
646	}
647	RTSpinlockReleaseNoInts(g_Spinlock, &Tmp);
648	if (!pSession)
649	{
650	LogRel((DEVICE_NAME ":VBoxSupDrvIOCtl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d iCmd=%#x\n",
651	(int)Process, Cmd));
652	return EINVAL;
653	}
654	#endif
655
656	/*
657	* Deal with the two high-speed IOCtl that takes it's arguments from
658	* the session and iCmd, and only returns a VBox status code.
659	*/
660	if ( Cmd == SUP_IOCTL_FAST_DO_RAW_RUN
661	\|\| Cmd == SUP_IOCTL_FAST_DO_HWACC_RUN
662	\|\| Cmd == SUP_IOCTL_FAST_DO_NOP)
663	{
664	*pVal = supdrvIOCtlFast(Cmd, pArgs, &g_DevExt, pSession);
665	return 0;
666	}
667
668	return VBoxDrvSolarisIOCtlSlow(pSession, Cmd, Mode, pArgs);
669	}
670
671
672	/** @def IOCPARM_LEN
673	* Gets the length from the ioctl number.
674	* This is normally defined by sys/ioccom.h on BSD systems...
675	*/
676	#ifndef IOCPARM_LEN
677	# define IOCPARM_LEN(x) ( ((x) >> 16) & IOCPARM_MASK )
678	#endif
679
680
681	/**
682	* Worker for VBoxSupDrvIOCtl that takes the slow IOCtl functions.
683	*
684	* @returns Solaris errno.
685	*
686	* @param pSession The session.
687	* @param Cmd The IOCtl command.
688	* @param Mode Information bitfield (for specifying ownership of data)
689	* @param iArg User space address of the request buffer.
690	*/
691	static int VBoxDrvSolarisIOCtlSlow(PSUPDRVSESSION pSession, int iCmd, int Mode, intptr_t iArg)
692	{
693	int rc;
694	uint32_t cbBuf = 0;
695	union
696	{
697	SUPREQHDR Hdr;
698	uint8_t abBuf[64];
699	} StackBuf;
700	PSUPREQHDR pHdr;
701
702
703	/*
704	* Read the header.
705	*/
706	if (RT_UNLIKELY(IOCPARM_LEN(iCmd) != sizeof(StackBuf.Hdr)))
707	{
708	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: iCmd=%#x len %d expected %d\n", iCmd, IOCPARM_LEN(iCmd), sizeof(StackBuf.Hdr)));
709	return EINVAL;
710	}
711	rc = ddi_copyin((void *)iArg, &StackBuf.Hdr, sizeof(StackBuf.Hdr), Mode);
712	if (RT_UNLIKELY(rc))
713	{
714	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: ddi_copyin(,%#lx,) failed; iCmd=%#x. rc=%d\n", iArg, iCmd, rc));
715	return EFAULT;
716	}
717	if (RT_UNLIKELY((StackBuf.Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
718	{
719	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: bad header magic %#x; iCmd=%#x\n", StackBuf.Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK, iCmd));
720	return EINVAL;
721	}
722	cbBuf = RT_MAX(StackBuf.Hdr.cbIn, StackBuf.Hdr.cbOut);
723	if (RT_UNLIKELY( StackBuf.Hdr.cbIn < sizeof(StackBuf.Hdr)
724	\|\| StackBuf.Hdr.cbOut < sizeof(StackBuf.Hdr)
725	\|\| cbBuf > _1M*16))
726	{
727	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: max(%#x,%#x); iCmd=%#x\n", StackBuf.Hdr.cbIn, StackBuf.Hdr.cbOut, iCmd));
728	return EINVAL;
729	}
730
731	/*
732	* Buffer the request.
733	*/
734	if (cbBuf <= sizeof(StackBuf))
735	pHdr = &StackBuf.Hdr;
736	else
737	{
738	pHdr = RTMemTmpAlloc(cbBuf);
739	if (RT_UNLIKELY(!pHdr))
740	{
741	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: failed to allocate buffer of %d bytes for iCmd=%#x.\n", cbBuf, iCmd));
742	return ENOMEM;
743	}
744	}
745	rc = ddi_copyin((void *)iArg, pHdr, cbBuf, Mode);
746	if (RT_UNLIKELY(rc))
747	{
748	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: copy_from_user(,%#lx, %#x) failed; iCmd=%#x. rc=%d\n", iArg, cbBuf, iCmd, rc));
749	if (pHdr != &StackBuf.Hdr)
750	RTMemFree(pHdr);
751	return EFAULT;
752	}
753
754	/*
755	* Process the IOCtl.
756	*/
757	rc = supdrvIOCtl(iCmd, &g_DevExt, pSession, pHdr);
758
759	/*
760	* Copy ioctl data and output buffer back to user space.
761	*/
762	if (RT_LIKELY(!rc))
763	{
764	uint32_t cbOut = pHdr->cbOut;
765	if (RT_UNLIKELY(cbOut > cbBuf))
766	{
767	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: too much output! %#x > %#x; iCmd=%#x!\n", cbOut, cbBuf, iCmd));
768	cbOut = cbBuf;
769	}
770	rc = ddi_copyout(pHdr, (void *)iArg, cbOut, Mode);
771	if (RT_UNLIKELY(rc != 0))
772	{
773	/* this is really bad */
774	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: ddi_copyout(,%p,%d) failed. rc=%d\n", (void *)iArg, cbBuf, rc));
775	rc = EFAULT;
776	}
777	}
778	else
779	rc = EINVAL;
780
781	if (pHdr != &StackBuf.Hdr)
782	RTMemTmpFree(pHdr);
783	return rc;
784	}
785
786
787	/**
788	* The SUPDRV IDC entry point.
789	*
790	* @returns VBox status code, see supdrvIDC.
791	* @param iReq The request code.
792	* @param pReq The request.
793	*/
794	int VBOXCALL SUPDrvSolarisIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
795	{
796	PSUPDRVSESSION pSession;
797
798	/*
799	* Some quick validations.
800	*/
801	if (RT_UNLIKELY(!VALID_PTR(pReq)))
802	return VERR_INVALID_POINTER;
803
804	pSession = pReq->pSession;
805	if (pSession)
806	{
807	if (RT_UNLIKELY(!VALID_PTR(pSession)))
808	return VERR_INVALID_PARAMETER;
809	if (RT_UNLIKELY(pSession->pDevExt != &g_DevExt))
810	return VERR_INVALID_PARAMETER;
811	}
812	else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
813	return VERR_INVALID_PARAMETER;
814
815	/*
816	* Do the job.
817	*/
818	return supdrvIDC(uReq, &g_DevExt, pSession, pReq);
819	}
820
821
822	/**
823	* Converts an supdrv error code to a solaris error code.
824	*
825	* @returns corresponding solaris error code.
826	* @param rc supdrv error code (SUPDRV_ERR_* defines).
827	*/
828	static int VBoxSupDrvErr2SolarisErr(int rc)
829	{
830	switch (rc)
831	{
832	case 0: return 0;
833	case SUPDRV_ERR_GENERAL_FAILURE: return EACCES;
834	case SUPDRV_ERR_INVALID_PARAM: return EINVAL;
835	case SUPDRV_ERR_INVALID_MAGIC: return EILSEQ;
836	case SUPDRV_ERR_INVALID_HANDLE: return ENXIO;
837	case SUPDRV_ERR_INVALID_POINTER: return EFAULT;
838	case SUPDRV_ERR_LOCK_FAILED: return ENOLCK;
839	case SUPDRV_ERR_ALREADY_LOADED: return EEXIST;
840	case SUPDRV_ERR_PERMISSION_DENIED: return EPERM;
841	case SUPDRV_ERR_VERSION_MISMATCH: return ENOSYS;
842	}
843
844	return EPERM;
845	}
846
847
848	/**
849	* Initializes any OS specific object creator fields.
850	*/
851	void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
852	{
853	NOREF(pObj);
854	NOREF(pSession);
855	}
856
857
858	/**
859	* Checks if the session can access the object.
860	*
861	* @returns true if a decision has been made.
862	* @returns false if the default access policy should be applied.
863	*
864	* @param pObj The object in question.
865	* @param pSession The session wanting to access the object.
866	* @param pszObjName The object name, can be NULL.
867	* @param prc Where to store the result when returning true.
868	*/
869	bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char pszObjName, int prc)
870	{
871	NOREF(pObj);
872	NOREF(pSession);
873	NOREF(pszObjName);
874	NOREF(prc);
875	return false;
876	}
877
878
879	bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
880	{
881	return false;
882	}
883
884
885	RTDECL(int) SUPR0Printf(const char *pszFormat, ...)
886	{
887	va_list args;
888	char szMsg[512];
889
890	va_start(args, pszFormat);
891	RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, args);
892	va_end(args);
893
894	szMsg[sizeof(szMsg) - 1] = '\0';
895	cmn_err(CE_CONT, "%s", szMsg);
896	return 0;
897	}
898

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source: vbox/trunk/src/VBox/HostDrivers/Support/solaris/SUPDrv-solaris.c@ 16905

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