SUPDrv-solaris.c@ 37249

Last change on this file since 37249 was 37249, checked in by vboxsync, 14 years ago
SUPDrv: solaris native loading tweaking.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 34.9 KB

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1	/* $Id: SUPDrv-solaris.c 37249 2011-05-30 10:03:45Z vboxsync $ */
2	/** @file
3	* VBoxDrv - The VirtualBox Support Driver - Solaris specifics.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27	/*******************************************************************************
28	* Header Files *
29	*******************************************************************************/
30	#define LOG_GROUP LOG_GROUP_SUP_DRV
31	#include <sys/types.h>
32	#include <sys/param.h>
33	#include <sys/errno.h>
34	#include <sys/uio.h>
35	#include <sys/buf.h>
36	#include <sys/modctl.h>
37	#include <sys/kobj.h>
38	#include <sys/kobj_impl.h>
39	#include <sys/open.h>
40	#include <sys/conf.h>
41	#include <sys/cmn_err.h>
42	#include <sys/stat.h>
43	#include <sys/ddi.h>
44	#include <sys/sunddi.h>
45	#include <sys/file.h>
46	#include <sys/priv_names.h>
47	#undef u /* /usr/include/sys/user.h:249:1 is where this is defined to (curproc->p_user). very cool. */
48
49	#include "../SUPDrvInternal.h"
50	#include <VBox/log.h>
51	#include <VBox/version.h>
52	#include <iprt/semaphore.h>
53	#include <iprt/spinlock.h>
54	#include <iprt/mp.h>
55	#include <iprt/path.h>
56	#include <iprt/power.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	/** The module name. */
69	#define DEVICE_NAME "vboxdrv"
70	/** The module description as seen in 'modinfo'. */
71	#define DEVICE_DESC "VirtualBox HostDrv"
72	/** Maximum number of driver instances. */
73	#define DEVICE_MAXINSTANCES 16
74
75
76	/*******************************************************************************
77	* Internal Functions *
78	*******************************************************************************/
79	static int VBoxDrvSolarisOpen(dev_t pDev, int fFlag, int fType, cred_t pCred);
80	static int VBoxDrvSolarisClose(dev_t Dev, int fFlag, int fType, cred_t *pCred);
81	static int VBoxDrvSolarisRead(dev_t Dev, struct uio pUio, cred_t pCred);
82	static int VBoxDrvSolarisWrite(dev_t Dev, struct uio pUio, cred_t pCred);
83	static int VBoxDrvSolarisIOCtl(dev_t Dev, int Cmd, intptr_t pArgs, int mode, cred_t pCred, int pVal);
84
85	static int VBoxDrvSolarisAttach(dev_info_t *pDip, ddi_attach_cmd_t Cmd);
86	static int VBoxDrvSolarisDetach(dev_info_t *pDip, ddi_detach_cmd_t Cmd);
87
88	static int VBoxSupDrvErr2SolarisErr(int rc);
89	static int VBoxDrvSolarisIOCtlSlow(PSUPDRVSESSION pSession, int Cmd, int Mode, intptr_t pArgs);
90
91
92	/*******************************************************************************
93	* Global Variables *
94	*******************************************************************************/
95	/**
96	* cb_ops: for drivers that support char/block entry points
97	*/
98	static struct cb_ops g_VBoxDrvSolarisCbOps =
99	{
100	VBoxDrvSolarisOpen,
101	VBoxDrvSolarisClose,
102	nodev, /* b strategy */
103	nodev, /* b dump */
104	nodev, /* b print */
105	VBoxDrvSolarisRead,
106	VBoxDrvSolarisWrite,
107	VBoxDrvSolarisIOCtl,
108	nodev, /* c devmap */
109	nodev, /* c mmap */
110	nodev, /* c segmap */
111	nochpoll, /* c poll */
112	ddi_prop_op, /* property ops */
113	NULL, /* streamtab */
114	D_NEW \| D_MP, /* compat. flag */
115	CB_REV /* revision */
116	};
117
118	/**
119	* dev_ops: for driver device operations
120	*/
121	static struct dev_ops g_VBoxDrvSolarisDevOps =
122	{
123	DEVO_REV, /* driver build revision */
124	0, /* ref count */
125	nulldev, /* get info */
126	nulldev, /* identify */
127	nulldev, /* probe */
128	VBoxDrvSolarisAttach,
129	VBoxDrvSolarisDetach,
130	nodev, /* reset */
131	&g_VBoxDrvSolarisCbOps,
132	(struct bus_ops *)0,
133	nodev /* power */
134	};
135
136	/**
137	* modldrv: export driver specifics to the kernel
138	*/
139	static struct modldrv g_VBoxDrvSolarisModule =
140	{
141	&mod_driverops, /* extern from kernel */
142	DEVICE_DESC " " VBOX_VERSION_STRING "r" RT_XSTR(VBOX_SVN_REV),
143	&g_VBoxDrvSolarisDevOps
144	};
145
146	/**
147	* modlinkage: export install/remove/info to the kernel
148	*/
149	static struct modlinkage g_VBoxDrvSolarisModLinkage =
150	{
151	MODREV_1, /* loadable module system revision */
152	{
153	&g_VBoxDrvSolarisModule,
154	NULL /* terminate array of linkage structures */
155	}
156	};
157
158	#ifndef USE_SESSION_HASH
159	/**
160	* State info for each open file handle.
161	*/
162	typedef struct
163	{
164	/*< Pointer to the session data. /
165	PSUPDRVSESSION pSession;
166	} vbox_devstate_t;
167	#else
168	/** State info. for each driver instance. */
169	typedef struct
170	{
171	dev_info_t pDip; / Device handle */
172	} vbox_devstate_t;
173	#endif
174
175	/** Opaque pointer to list of state */
176	static void *g_pVBoxDrvSolarisState;
177
178	/** Device extention & session data association structure */
179	static SUPDRVDEVEXT g_DevExt;
180
181	/** Hash table */
182	static PSUPDRVSESSION g_apSessionHashTab[19];
183	/** Spinlock protecting g_apSessionHashTab. */
184	static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
185	/** Calculates bucket index into g_apSessionHashTab.*/
186	#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab))
187
188	/**
189	* Kernel entry points
190	*/
191	int _init(void)
192	{
193	LogFlowFunc((DEVICE_NAME ":_init\n"));
194
195	/*
196	* Prevent module autounloading.
197	*/
198	modctl_t *pModCtl = mod_getctl(&g_VBoxDrvSolarisModLinkage);
199	if (pModCtl)
200	pModCtl->mod_loadflags \|= MOD_NOAUTOUNLOAD;
201	else
202	LogRel((DEVICE_NAME ":failed to disable autounloading!\n"));
203
204	/*
205	* Initialize IPRT R0 driver, which internally calls OS-specific r0 init.
206	*/
207	int rc = RTR0Init(0);
208	if (RT_SUCCESS(rc))
209	{
210	/*
211	* Initialize the device extension
212	*/
213	rc = supdrvInitDevExt(&g_DevExt, sizeof(SUPDRVSESSION));
214	if (RT_SUCCESS(rc))
215	{
216	/*
217	* Initialize the session hash table.
218	*/
219	memset(g_apSessionHashTab, 0, sizeof(g_apSessionHashTab));
220	rc = RTSpinlockCreate(&g_Spinlock);
221	if (RT_SUCCESS(rc))
222	{
223	rc = ddi_soft_state_init(&g_pVBoxDrvSolarisState, sizeof(vbox_devstate_t), 8);
224	if (!rc)
225	{
226	rc = mod_install(&g_VBoxDrvSolarisModLinkage);
227	if (!rc)
228	return rc; /* success */
229
230	ddi_soft_state_fini(&g_pVBoxDrvSolarisState);
231	LogRel((DEVICE_NAME ":mod_install failed! rc=%d\n", rc));
232	}
233	else
234	LogRel((DEVICE_NAME ":failed to initialize soft state.\n"));
235
236	RTSpinlockDestroy(g_Spinlock);
237	g_Spinlock = NIL_RTSPINLOCK;
238	}
239	else
240	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: RTSpinlockCreate failed\n"));
241	supdrvDeleteDevExt(&g_DevExt);
242	}
243	else
244	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: supdrvInitDevExt failed\n"));
245	RTR0TermForced();
246	}
247	else
248	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: failed to init R0Drv\n"));
249	memset(&g_DevExt, 0, sizeof(g_DevExt));
250
251	return RTErrConvertToErrno(rc);
252	}
253
254
255	int _fini(void)
256	{
257	LogFlowFunc((DEVICE_NAME ":_fini\n"));
258
259	/*
260	* Undo the work we did at start (in the reverse order).
261	*/
262	int rc = mod_remove(&g_VBoxDrvSolarisModLinkage);
263	if (rc != 0)
264	return rc;
265
266	supdrvDeleteDevExt(&g_DevExt);
267
268	rc = RTSpinlockDestroy(g_Spinlock);
269	AssertRC(rc);
270	g_Spinlock = NIL_RTSPINLOCK;
271
272	RTR0TermForced();
273
274	memset(&g_DevExt, 0, sizeof(g_DevExt));
275
276	ddi_soft_state_fini(&g_pVBoxDrvSolarisState);
277	return 0;
278	}
279
280
281	int _info(struct modinfo *pModInfo)
282	{
283	LogFlowFunc((DEVICE_NAME ":_info\n"));
284	int e = mod_info(&g_VBoxDrvSolarisModLinkage, pModInfo);
285	return e;
286	}
287
288
289	/**
290	* Attach entry point, to attach a device to the system or resume it.
291	*
292	* @param pDip The module structure instance.
293	* @param enmCmd Operation type (attach/resume).
294	*
295	* @return corresponding solaris error code.
296	*/
297	static int VBoxDrvSolarisAttach(dev_info_t *pDip, ddi_attach_cmd_t enmCmd)
298	{
299	LogFlowFunc((DEVICE_NAME ":VBoxDrvSolarisAttach\n"));
300
301	switch (enmCmd)
302	{
303	case DDI_ATTACH:
304	{
305	int rc;
306	int instance = ddi_get_instance(pDip);
307	#ifdef USE_SESSION_HASH
308	vbox_devstate_t *pState;
309
310	if (ddi_soft_state_zalloc(g_pVBoxDrvSolarisState, instance) != DDI_SUCCESS)
311	{
312	LogRel((DEVICE_NAME ":VBoxDrvSolarisAttach: state alloc failed\n"));
313	return DDI_FAILURE;
314	}
315
316	pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, instance);
317	#endif
318
319	/*
320	* Register for suspend/resume notifications
321	*/
322	rc = ddi_prop_create(DDI_DEV_T_NONE, pDip, DDI_PROP_CANSLEEP /* kmem alloc can sleep */,
323	"pm-hardware-state", "needs-suspend-resume", sizeof("needs-suspend-resume"));
324	if (rc != DDI_PROP_SUCCESS)
325	LogRel((DEVICE_NAME ":Suspend/Resume notification registration failed.\n"));
326
327	/*
328	* Register ourselves as a character device, pseudo-driver
329	*/
330	#ifdef VBOX_WITH_HARDENING
331	rc = ddi_create_priv_minor_node(pDip, DEVICE_NAME, S_IFCHR, instance, DDI_PSEUDO,
332	0, NULL, NULL, 0600);
333	#else
334	rc = ddi_create_priv_minor_node(pDip, DEVICE_NAME, S_IFCHR, instance, DDI_PSEUDO,
335	0, "none", "none", 0666);
336	#endif
337	if (rc == DDI_SUCCESS)
338	{
339	#ifdef USE_SESSION_HASH
340	pState->pDip = pDip;
341	#endif
342	ddi_report_dev(pDip);
343	return DDI_SUCCESS;
344	}
345
346	return DDI_FAILURE;
347	}
348
349	case DDI_RESUME:
350	{
351	#if 0
352	RTSemFastMutexRequest(g_DevExt.mtxGip);
353	if (g_DevExt.pGipTimer)
354	RTTimerStart(g_DevExt.pGipTimer, 0);
355
356	RTSemFastMutexRelease(g_DevExt.mtxGip);
357	#endif
358	RTPowerSignalEvent(RTPOWEREVENT_RESUME);
359	LogFlow((DEVICE_NAME ": Awakened from suspend.\n"));
360	return DDI_SUCCESS;
361	}
362
363	default:
364	return DDI_FAILURE;
365	}
366
367	return DDI_FAILURE;
368	}
369
370
371	/**
372	* Detach entry point, to detach a device to the system or suspend it.
373	*
374	* @param pDip The module structure instance.
375	* @param enmCmd Operation type (detach/suspend).
376	*
377	* @return corresponding solaris error code.
378	*/
379	static int VBoxDrvSolarisDetach(dev_info_t *pDip, ddi_detach_cmd_t enmCmd)
380	{
381	LogFlowFunc((DEVICE_NAME ":VBoxDrvSolarisDetach\n"));
382	switch (enmCmd)
383	{
384	case DDI_DETACH:
385	{
386	#ifndef USE_SESSION_HASH
387	ddi_remove_minor_node(pDip, NULL);
388	#else
389	int instance = ddi_get_instance(pDip);
390	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, instance);
391	ddi_remove_minor_node(pDip, NULL);
392	ddi_soft_state_free(g_pVBoxDrvSolarisState, instance);
393	#endif
394	ddi_prop_remove_all(pDip);
395	return DDI_SUCCESS;
396	}
397
398	case DDI_SUSPEND:
399	{
400	#if 0
401	RTSemFastMutexRequest(g_DevExt.mtxGip);
402	if (g_DevExt.pGipTimer && g_DevExt.cGipUsers > 0)
403	RTTimerStop(g_DevExt.pGipTimer);
404
405	RTSemFastMutexRelease(g_DevExt.mtxGip);
406	#endif
407	RTPowerSignalEvent(RTPOWEREVENT_SUSPEND);
408	LogFlow((DEVICE_NAME ": Falling to suspend mode.\n"));
409	return DDI_SUCCESS;
410
411	}
412
413	default:
414	return DDI_FAILURE;
415	}
416	}
417
418
419
420	/**
421	* User context entry points
422	*/
423	static int VBoxDrvSolarisOpen(dev_t pDev, int fFlag, int fType, cred_t pCred)
424	{
425	int rc;
426	PSUPDRVSESSION pSession;
427	LogFlowFunc((DEVICE_NAME ":VBoxDrvSolarisOpen: pDev=%p:%#x\n", pDev, *pDev));
428
429	#ifndef USE_SESSION_HASH
430	/*
431	* Locate a new device open instance.
432	*
433	* For each open call we'll allocate an item in the soft state of the device.
434	* The item index is stored in the dev_t. I hope this is ok...
435	*/
436	vbox_devstate_t *pState = NULL;
437	unsigned iOpenInstance;
438	for (iOpenInstance = 0; iOpenInstance < 4096; iOpenInstance++)
439	{
440	if ( !ddi_get_soft_state(g_pVBoxDrvSolarisState, iOpenInstance) /* faster */
441	&& ddi_soft_state_zalloc(g_pVBoxDrvSolarisState, iOpenInstance) == DDI_SUCCESS)
442	{
443	pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, iOpenInstance);
444	break;
445	}
446	}
447	if (!pState)
448	{
449	LogRel((DEVICE_NAME ":VBoxDrvSolarisOpen: too many open instances.\n"));
450	return ENXIO;
451	}
452
453	/*
454	* Create a new session.
455	*/
456	rc = supdrvCreateSession(&g_DevExt, true /* fUser */, &pSession);
457	if (RT_SUCCESS(rc))
458	{
459	pSession->Uid = crgetruid(pCred);
460	pSession->Gid = crgetrgid(pCred);
461
462	pState->pSession = pSession;
463	pDev = makedevice(getmajor(pDev), iOpenInstance);
464	LogFlow((DEVICE_NAME ":VBoxDrvSolarisOpen: Dev=%#x pSession=%p pid=%d r0proc=%p thread=%p\n",
465	*pDev, pSession, RTProcSelf(), RTR0ProcHandleSelf(), RTThreadNativeSelf() ));
466	return 0;
467	}
468
469	/* failed - clean up */
470	ddi_soft_state_free(g_pVBoxDrvSolarisState, iOpenInstance);
471
472	#else
473	/*
474	* Create a new session.
475	* Sessions in Solaris driver are mostly useless. It's however needed
476	* in VBoxDrvSolarisIOCtlSlow() while calling supdrvIOCtl()
477	*/
478	rc = supdrvCreateSession(&g_DevExt, true /* fUser */, &pSession);
479	if (RT_SUCCESS(rc))
480	{
481	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
482	unsigned iHash;
483
484	pSession->Uid = crgetruid(pCred);
485	pSession->Gid = crgetrgid(pCred);
486
487	/*
488	* Insert it into the hash table.
489	*/
490	iHash = SESSION_HASH(pSession->Process);
491	RTSpinlockAcquireNoInts(g_Spinlock, &Tmp);
492	pSession->pNextHash = g_apSessionHashTab[iHash];
493	g_apSessionHashTab[iHash] = pSession;
494	RTSpinlockReleaseNoInts(g_Spinlock, &Tmp);
495	LogFlow((DEVICE_NAME ":VBoxDrvSolarisOpen success\n"));
496	}
497
498	int instance;
499	for (instance = 0; instance < DEVICE_MAXINSTANCES; instance++)
500	{
501	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, instance);
502	if (pState)
503	break;
504	}
505
506	if (instance >= DEVICE_MAXINSTANCES)
507	{
508	LogRel((DEVICE_NAME ":VBoxDrvSolarisOpen: All instances exhausted\n"));
509	return ENXIO;
510	}
511
512	pDev = makedevice(getmajor(pDev), instance);
513	#endif
514
515	return VBoxSupDrvErr2SolarisErr(rc);
516	}
517
518
519	static int VBoxDrvSolarisClose(dev_t Dev, int flag, int otyp, cred_t *cred)
520	{
521	LogFlowFunc((DEVICE_NAME ":VBoxDrvSolarisClose: Dev=%#x\n", Dev));
522
523	#ifndef USE_SESSION_HASH
524	/*
525	* Get the session and free the soft state item.
526	*/
527	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, getminor(Dev));
528	if (!pState)
529	{
530	LogRel((DEVICE_NAME ":VBoxDrvSolarisClose: no state data for %#x (%d)\n", Dev, getminor(Dev)));
531	return EFAULT;
532	}
533
534	PSUPDRVSESSION pSession = pState->pSession;
535	pState->pSession = NULL;
536	ddi_soft_state_free(g_pVBoxDrvSolarisState, getminor(Dev));
537
538	if (!pSession)
539	{
540	LogRel((DEVICE_NAME ":VBoxDrvSolarisClose: no session in state data for %#x (%d)\n", Dev, getminor(Dev)));
541	return EFAULT;
542	}
543	LogFlow((DEVICE_NAME ":VBoxDrvSolarisClose: Dev=%#x pSession=%p pid=%d r0proc=%p thread=%p\n",
544	Dev, pSession, RTProcSelf(), RTR0ProcHandleSelf(), RTThreadNativeSelf() ));
545
546	#else
547	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
548	const RTPROCESS Process = RTProcSelf();
549	const unsigned iHash = SESSION_HASH(Process);
550	PSUPDRVSESSION pSession;
551
552	/*
553	* Remove from the hash table.
554	*/
555	RTSpinlockAcquireNoInts(g_Spinlock, &Tmp);
556	pSession = g_apSessionHashTab[iHash];
557	if (pSession)
558	{
559	if (pSession->Process == Process)
560	{
561	g_apSessionHashTab[iHash] = pSession->pNextHash;
562	pSession->pNextHash = NULL;
563	}
564	else
565	{
566	PSUPDRVSESSION pPrev = pSession;
567	pSession = pSession->pNextHash;
568	while (pSession)
569	{
570	if (pSession->Process == Process)
571	{
572	pPrev->pNextHash = pSession->pNextHash;
573	pSession->pNextHash = NULL;
574	break;
575	}
576
577	/* next */
578	pPrev = pSession;
579	pSession = pSession->pNextHash;
580	}
581	}
582	}
583	RTSpinlockReleaseNoInts(g_Spinlock, &Tmp);
584	if (!pSession)
585	{
586	LogRel((DEVICE_NAME ":VBoxDrvSolarisClose: WHAT?!? pSession == NULL! This must be a mistake... pid=%d (close)\n",
587	(int)Process));
588	return EFAULT;
589	}
590	#endif
591
592	/*
593	* Close the session.
594	*/
595	supdrvCloseSession(&g_DevExt, pSession);
596	return 0;
597	}
598
599
600	static int VBoxDrvSolarisRead(dev_t Dev, struct uio pUio, cred_t pCred)
601	{
602	LogFlowFunc((DEVICE_NAME ":VBoxDrvSolarisRead"));
603	return 0;
604	}
605
606
607	static int VBoxDrvSolarisWrite(dev_t Dev, struct uio pUio, cred_t pCred)
608	{
609	LogFlowFunc((DEVICE_NAME ":VBoxDrvSolarisWrite"));
610	return 0;
611	}
612
613
614	/**
615	* Driver ioctl, an alternate entry point for this character driver.
616	*
617	* @param Dev Device number
618	* @param Cmd Operation identifier
619	* @param pArg Arguments from user to driver
620	* @param Mode Information bitfield (read/write, address space etc.)
621	* @param pCred User credentials
622	* @param pVal Return value for calling process.
623	*
624	* @return corresponding solaris error code.
625	*/
626	static int VBoxDrvSolarisIOCtl(dev_t Dev, int Cmd, intptr_t pArgs, int Mode, cred_t pCred, int pVal)
627	{
628	#ifndef USE_SESSION_HASH
629	/*
630	* Get the session from the soft state item.
631	*/
632	vbox_devstate_t *pState = ddi_get_soft_state(g_pVBoxDrvSolarisState, getminor(Dev));
633	if (!pState)
634	{
635	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtl: no state data for %#x (%d)\n", Dev, getminor(Dev)));
636	return EINVAL;
637	}
638
639	PSUPDRVSESSION pSession = pState->pSession;
640	if (!pSession)
641	{
642	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtl: no session in state data for %#x (%d)\n", Dev, getminor(Dev)));
643	return DDI_SUCCESS;
644	}
645	#else
646	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
647	const RTPROCESS Process = RTProcSelf();
648	const unsigned iHash = SESSION_HASH(Process);
649	PSUPDRVSESSION pSession;
650
651	/*
652	* Find the session.
653	*/
654	RTSpinlockAcquireNoInts(g_Spinlock, &Tmp);
655	pSession = g_apSessionHashTab[iHash];
656	if (pSession && pSession->Process != Process)
657	{
658	do pSession = pSession->pNextHash;
659	while (pSession && pSession->Process != Process);
660	}
661	RTSpinlockReleaseNoInts(g_Spinlock, &Tmp);
662	if (!pSession)
663	{
664	LogRel((DEVICE_NAME ":VBoxSupDrvIOCtl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d iCmd=%#x\n",
665	(int)Process, Cmd));
666	return EINVAL;
667	}
668	#endif
669
670	/*
671	* Deal with the two high-speed IOCtl that takes it's arguments from
672	* the session and iCmd, and only returns a VBox status code.
673	*/
674	if ( Cmd == SUP_IOCTL_FAST_DO_RAW_RUN
675	\|\| Cmd == SUP_IOCTL_FAST_DO_HWACC_RUN
676	\|\| Cmd == SUP_IOCTL_FAST_DO_NOP)
677	{
678	*pVal = supdrvIOCtlFast(Cmd, pArgs, &g_DevExt, pSession);
679	return 0;
680	}
681
682	return VBoxDrvSolarisIOCtlSlow(pSession, Cmd, Mode, pArgs);
683	}
684
685
686	/** @def IOCPARM_LEN
687	* Gets the length from the ioctl number.
688	* This is normally defined by sys/ioccom.h on BSD systems...
689	*/
690	#ifndef IOCPARM_LEN
691	# define IOCPARM_LEN(x) ( ((x) >> 16) & IOCPARM_MASK )
692	#endif
693
694
695	/**
696	* Worker for VBoxSupDrvIOCtl that takes the slow IOCtl functions.
697	*
698	* @returns Solaris errno.
699	*
700	* @param pSession The session.
701	* @param Cmd The IOCtl command.
702	* @param Mode Information bitfield (for specifying ownership of data)
703	* @param iArg User space address of the request buffer.
704	*/
705	static int VBoxDrvSolarisIOCtlSlow(PSUPDRVSESSION pSession, int iCmd, int Mode, intptr_t iArg)
706	{
707	int rc;
708	uint32_t cbBuf = 0;
709	union
710	{
711	SUPREQHDR Hdr;
712	uint8_t abBuf[64];
713	} StackBuf;
714	PSUPREQHDR pHdr;
715
716
717	/*
718	* Read the header.
719	*/
720	if (RT_UNLIKELY(IOCPARM_LEN(iCmd) != sizeof(StackBuf.Hdr)))
721	{
722	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: iCmd=%#x len %d expected %d\n", iCmd, IOCPARM_LEN(iCmd), sizeof(StackBuf.Hdr)));
723	return EINVAL;
724	}
725	rc = ddi_copyin((void *)iArg, &StackBuf.Hdr, sizeof(StackBuf.Hdr), Mode);
726	if (RT_UNLIKELY(rc))
727	{
728	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: ddi_copyin(,%#lx,) failed; iCmd=%#x. rc=%d\n", iArg, iCmd, rc));
729	return EFAULT;
730	}
731	if (RT_UNLIKELY((StackBuf.Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
732	{
733	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: bad header magic %#x; iCmd=%#x\n", StackBuf.Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK, iCmd));
734	return EINVAL;
735	}
736	cbBuf = RT_MAX(StackBuf.Hdr.cbIn, StackBuf.Hdr.cbOut);
737	if (RT_UNLIKELY( StackBuf.Hdr.cbIn < sizeof(StackBuf.Hdr)
738	\|\| StackBuf.Hdr.cbOut < sizeof(StackBuf.Hdr)
739	\|\| cbBuf > _1M*16))
740	{
741	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: max(%#x,%#x); iCmd=%#x\n", StackBuf.Hdr.cbIn, StackBuf.Hdr.cbOut, iCmd));
742	return EINVAL;
743	}
744
745	/*
746	* Buffer the request.
747	*/
748	if (cbBuf <= sizeof(StackBuf))
749	pHdr = &StackBuf.Hdr;
750	else
751	{
752	pHdr = RTMemTmpAlloc(cbBuf);
753	if (RT_UNLIKELY(!pHdr))
754	{
755	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: failed to allocate buffer of %d bytes for iCmd=%#x.\n", cbBuf, iCmd));
756	return ENOMEM;
757	}
758	}
759	rc = ddi_copyin((void *)iArg, pHdr, cbBuf, Mode);
760	if (RT_UNLIKELY(rc))
761	{
762	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: copy_from_user(,%#lx, %#x) failed; iCmd=%#x. rc=%d\n", iArg, cbBuf, iCmd, rc));
763	if (pHdr != &StackBuf.Hdr)
764	RTMemFree(pHdr);
765	return EFAULT;
766	}
767
768	/*
769	* Process the IOCtl.
770	*/
771	rc = supdrvIOCtl(iCmd, &g_DevExt, pSession, pHdr);
772
773	/*
774	* Copy ioctl data and output buffer back to user space.
775	*/
776	if (RT_LIKELY(!rc))
777	{
778	uint32_t cbOut = pHdr->cbOut;
779	if (RT_UNLIKELY(cbOut > cbBuf))
780	{
781	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: too much output! %#x > %#x; iCmd=%#x!\n", cbOut, cbBuf, iCmd));
782	cbOut = cbBuf;
783	}
784	rc = ddi_copyout(pHdr, (void *)iArg, cbOut, Mode);
785	if (RT_UNLIKELY(rc != 0))
786	{
787	/* this is really bad */
788	LogRel((DEVICE_NAME ":VBoxDrvSolarisIOCtlSlow: ddi_copyout(,%p,%d) failed. rc=%d\n", (void *)iArg, cbBuf, rc));
789	rc = EFAULT;
790	}
791	}
792	else
793	rc = EINVAL;
794
795	if (pHdr != &StackBuf.Hdr)
796	RTMemTmpFree(pHdr);
797	return rc;
798	}
799
800
801	/**
802	* The SUPDRV IDC entry point.
803	*
804	* @returns VBox status code, see supdrvIDC.
805	* @param iReq The request code.
806	* @param pReq The request.
807	*/
808	int VBOXCALL SUPDrvSolarisIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
809	{
810	PSUPDRVSESSION pSession;
811
812	/*
813	* Some quick validations.
814	*/
815	if (RT_UNLIKELY(!VALID_PTR(pReq)))
816	return VERR_INVALID_POINTER;
817
818	pSession = pReq->pSession;
819	if (pSession)
820	{
821	if (RT_UNLIKELY(!VALID_PTR(pSession)))
822	return VERR_INVALID_PARAMETER;
823	if (RT_UNLIKELY(pSession->pDevExt != &g_DevExt))
824	return VERR_INVALID_PARAMETER;
825	}
826	else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
827	return VERR_INVALID_PARAMETER;
828
829	/*
830	* Do the job.
831	*/
832	return supdrvIDC(uReq, &g_DevExt, pSession, pReq);
833	}
834
835
836	/**
837	* Converts an supdrv error code to a solaris error code.
838	*
839	* @returns corresponding solaris error code.
840	* @param rc IPRT status code.
841	*/
842	static int VBoxSupDrvErr2SolarisErr(int rc)
843	{
844	switch (rc)
845	{
846	case VINF_SUCCESS: return 0;
847	case VERR_GENERAL_FAILURE: return EACCES;
848	case VERR_INVALID_PARAMETER: return EINVAL;
849	case VERR_INVALID_MAGIC: return EILSEQ;
850	case VERR_INVALID_HANDLE: return ENXIO;
851	case VERR_INVALID_POINTER: return EFAULT;
852	case VERR_LOCK_FAILED: return ENOLCK;
853	case VERR_ALREADY_LOADED: return EEXIST;
854	case VERR_PERMISSION_DENIED: return EPERM;
855	case VERR_VERSION_MISMATCH: return ENOSYS;
856	}
857
858	return EPERM;
859	}
860
861
862	/**
863	* Initializes any OS specific object creator fields.
864	*/
865	void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
866	{
867	NOREF(pObj);
868	NOREF(pSession);
869	}
870
871
872	/**
873	* Checks if the session can access the object.
874	*
875	* @returns true if a decision has been made.
876	* @returns false if the default access policy should be applied.
877	*
878	* @param pObj The object in question.
879	* @param pSession The session wanting to access the object.
880	* @param pszObjName The object name, can be NULL.
881	* @param prc Where to store the result when returning true.
882	*/
883	bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char pszObjName, int prc)
884	{
885	NOREF(pObj);
886	NOREF(pSession);
887	NOREF(pszObjName);
888	NOREF(prc);
889	return false;
890	}
891
892
893	bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
894	{
895	return false;
896	}
897
898	#if defined(VBOX_WITH_NATIVE_SOLARIS_LOADING) \
899	&& !defined(VBOX_WITHOUT_NATIVE_R0_LOADER)
900
901	int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
902	{
903	pImage->idSolMod = -1;
904	pImage->pSolModCtl = NULL;
905
906	# if 1 /* This approach requires _init/_fini/_info stubs. */
907	/*
908	* Construct a filename that escapes the module search path and let us
909	* specify a root path.
910	*/
911	const char *pszName = RTPathFilename(pszFilename);
912	AssertReturn(pszName, VERR_INVALID_PARAMETER);
913	char pszSubDir = RTStrAPrintf2("../../../../../../../../../../../%.s", pszName - pszFilename, pszFilename);
914	if (!pszSubDir)
915	return VERR_NO_STR_MEMORY;
916
917	int idMod = modload(pszSubDir, pszName);
918	RTStrFree(pszSubDir);
919	if (idMod == -1)
920	{
921	LogRel(("modload(,%s): failed, could be anything...\n", pszFilename));
922	return VERR_LDR_GENERAL_FAILURE;
923	}
924
925	modctl_t *pModCtl = mod_hold_by_id(idMod);
926	if (!pModCtl)
927	{
928	LogRel(("mod_hold_by_id(,%s): failed, weird.\n", pszFilename));
929	/* No point in calling modunload. */
930	return VERR_LDR_GENERAL_FAILURE;
931	}
932	pModCtl->mod_loadflags \|= MOD_NOAUTOUNLOAD \| MOD_NOUNLOAD; /* paranoia */
933
934	# else
935
936	const int idMod = -1;
937	modctl_t *pModCtl = mod_hold_by_name(pszFilename);
938	if (!pModCtl)
939	{
940	LogRel(("mod_hold_by_name failed for '%s'\n", pszFilename));
941	return VERR_LDR_GENERAL_FAILURE;
942	}
943
944	int rc = kobj_load_module(pModCtl, 0 /use_path/);
945	if (rc != 0)
946	{
947	LogRel(("kobj_load_module failed with rc=%d for '%s'\n", rc, pszFilename));
948	mod_release_mod(pModCtl);
949	return RTErrConvertFromErrno(rc);
950	}
951	# endif
952
953	/*
954	* Get the module info.
955	*
956	* Note! The text section is actually not at mi_base, but and the next
957	* alignment boundrary and there seems to be no easy way of
958	* getting at this address. This sabotages supdrvOSLdrLoad.
959	* Bastards!
960	*/
961	struct modinfo ModInfo;
962	kobj_getmodinfo(pModCtl->mod_mp, &ModInfo);
963	pImage->pvImage = ModInfo.mi_base;
964	pImage->idSolMod = idMod;
965	pImage->pSolModCtl = pModCtl;
966
967	mod_release_mod(pImage->pSolModCtl);
968	LogRel(("supdrvOSLdrOpen: succeeded for '%s' (mi_base=%p mi_size=%#x), id=%d ctl=%p\n",
969	pszFilename, ModInfo.mi_base, ModInfo.mi_size, idMod, pModCtl));
970	return VINF_SUCCESS;
971	}
972
973
974	int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void pv, const uint8_t pbImageBits)
975	{
976	NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
977	if (kobj_addrcheck(pImage->pSolModCtl->mod_mp, pv))
978	return VERR_INVALID_PARAMETER;
979	return VINF_SUCCESS;
980	}
981
982
983	/**
984	* Resolves a module entry point address.
985	*
986	* @returns VBox status code.
987	* @param pImage The image.
988	* @param pszSymbol The symbol name.
989	* @param ppvValue Where to store the value. On input this holds
990	* the symbol value SUPLib calculated.
991	*/
992	static int supdrvSolLdrResolvEp(PSUPDRVLDRIMAGE pImage, const char pszSymbol, void *ppvValue)
993	{
994	/* Don't try resolve symbols which, according to SUPLib, aren't there. */
995	if (!*ppvValue)
996	return VINF_SUCCESS;
997
998	uintptr_t uValue = modlookup_by_modctl(pImage->pSolModCtl, pszSymbol);
999	if (!uValue)
1000	{
1001	LogRel(("supdrvOSLdrLoad on %s failed to resolve %s\n", pImage->szName, pszSymbol));
1002	return VERR_SYMBOL_NOT_FOUND;
1003	}
1004	ppvValue = (void )uValue;
1005	return VINF_SUCCESS;
1006	}
1007
1008
1009	int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
1010	{
1011	#if 0 /* This doesn't work because of text alignment. */
1012	/*
1013	* Comparing is very very difficult since text and data may be allocated
1014	* separately.
1015	*/
1016	size_t cbCompare = RT_MIN(pImage->cbImageBits, 64);
1017	if (memcmp(pImage->pvImage, pbImageBits, cbCompare))
1018	{
1019	LogRel(("Image mismatch: %s (%p)\n", pImage->szName, pImage->pvImage));
1020	LogRel(("Native: %.*Rhxs\n", cbCompare, pImage->pvImage));
1021	LogRel(("SUPLib: %.*Rhxs\n", cbCompare, pbImageBits));
1022	return VERR_LDR_MISMATCH_NATIVE;
1023	}
1024	#endif
1025
1026	/*
1027	* Get the exported symbol addresses.
1028	*/
1029	int rc;
1030	modctl_t *pModCtl = mod_hold_by_id(pImage->idSolMod);
1031	if (pModCtl && pModCtl == pImage->pSolModCtl)
1032	{
1033	uint32_t iSym = pImage->cSymbols;
1034	while (iSym-- > 0)
1035	{
1036	const char *pszSymbol = &pImage->pachStrTab[pImage->paSymbols[iSym].offName];
1037	uintptr_t uValue = modlookup_by_modctl(pImage->pSolModCtl, pszSymbol);
1038	if (!uValue)
1039	{
1040	LogRel(("supdrvOSLdrLoad on %s failed to resolve the exported symbol: '%s'\n", pImage->szName, pszSymbol));
1041	break;
1042	}
1043	uintptr_t offSymbol = uValue - (uintptr_t)pImage->pvImage;
1044	pImage->paSymbols[iSym].offSymbol = offSymbol;
1045	if (pImage->paSymbols[iSym].offSymbol != (int32_t)offSymbol)
1046	{
1047	LogRel(("supdrvOSLdrLoad on %s symbol out of range: %p (%s) \n", pImage->szName, offSymbol, pszSymbol));
1048	break;
1049	}
1050	}
1051
1052	rc = iSym == UINT32_MAX ? VINF_SUCCESS : VERR_LDR_GENERAL_FAILURE;
1053
1054	/*
1055	* Get the standard module entry points.
1056	*/
1057	if (RT_SUCCESS(rc))
1058	{
1059	rc = supdrvSolLdrResolvEp(pImage, "ModuleInit", (void **)&pImage->pfnModuleInit);
1060	if (RT_SUCCESS(rc))
1061	rc = supdrvSolLdrResolvEp(pImage, "ModuleTerm", (void **)&pImage->pfnModuleTerm);
1062
1063	switch (pReq->u.In.eEPType)
1064	{
1065	case SUPLDRLOADEP_VMMR0:
1066	{
1067	if (RT_SUCCESS(rc))
1068	rc = supdrvSolLdrResolvEp(pImage, "VMMR0EntryInt", (void **)&pReq->u.In.EP.VMMR0.pvVMMR0EntryInt);
1069	if (RT_SUCCESS(rc))
1070	rc = supdrvSolLdrResolvEp(pImage, "VMMR0EntryFast", (void **)&pReq->u.In.EP.VMMR0.pvVMMR0EntryFast);
1071	if (RT_SUCCESS(rc))
1072	rc = supdrvSolLdrResolvEp(pImage, "VMMR0EntryEx", (void **)&pReq->u.In.EP.VMMR0.pvVMMR0EntryEx);
1073	break;
1074	}
1075
1076	case SUPLDRLOADEP_SERVICE:
1077	{
1078	/** @todo we need the name of the entry point. */
1079	return VERR_NOT_SUPPORTED;
1080	}
1081	}
1082	}
1083
1084	mod_release_mod(pImage->pSolModCtl);
1085	}
1086	else
1087	{
1088	LogRel(("mod_hold_by_id failed in supdrvOSLdrLoad on %s: %p\n", pImage->szName, pModCtl));
1089	rc = VERR_LDR_MISMATCH_NATIVE;
1090	}
1091	return rc;
1092	}
1093
1094
1095	void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
1096	{
1097	# if 1
1098	pImage->pSolModCtl->mod_loadflags &= ~MOD_NOUNLOAD;
1099	int rc = modunload(pImage->idSolMod);
1100	if (rc)
1101	LogRel(("modunload(%u (%s)) failed: %d\n", pImage->idSolMod, pImage->szName, rc));
1102	# else
1103	kobj_unload_module(pImage->pSolModCtl);
1104	# endif
1105	pImage->pSolModCtl = NULL;
1106	pImage->idSolMod = NULL;
1107	}
1108
1109	#else /* !VBOX_WITH_NATIVE_SOLARIS_LOADING */
1110
1111	int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
1112	{
1113	NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
1114	return VERR_NOT_SUPPORTED;
1115	}
1116
1117
1118	int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void pv, const uint8_t pbImageBits)
1119	{
1120	NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
1121	return VERR_NOT_SUPPORTED;
1122	}
1123
1124
1125	int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
1126	{
1127	NOREF(pDevExt); NOREF(pImage); NOREF(pbImageBits); NOREF(pReq);
1128	return VERR_NOT_SUPPORTED;
1129	}
1130
1131
1132	void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
1133	{
1134	NOREF(pDevExt); NOREF(pImage);
1135	}
1136
1137	#endif /* !VBOX_WITH_NATIVE_SOLARIS_LOADING */
1138
1139
1140	RTDECL(int) SUPR0Printf(const char *pszFormat, ...)
1141	{
1142	va_list args;
1143	char szMsg[512];
1144
1145	va_start(args, pszFormat);
1146	RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, args);
1147	va_end(args);
1148
1149	szMsg[sizeof(szMsg) - 1] = '\0';
1150	cmn_err(CE_CONT, "%s", szMsg);
1151	return 0;
1152	}
1153

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source: vbox/trunk/src/VBox/HostDrivers/Support/solaris/SUPDrv-solaris.c@ 37249

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