SUPDrv-darwin.cpp@ 44571

Last change on this file since 44571 was 44173, checked in by vboxsync, 12 years ago
SUPDrv,SUPLib: Introducing /dev/vboxdrvu on darwin (other platforms soon to follow).
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1	/* $Id: SUPDrv-darwin.cpp 44173 2012-12-19 18:12:31Z vboxsync $ */
2	/** @file
3	* VirtualBox Support Driver - Darwin Specific Code.
4	*/
5
6	/*
7	* Copyright (C) 2006-2012 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	/*
32	* Deal with conflicts first.
33	* PVM - BSD mess, that FreeBSD has correct a long time ago.
34	* iprt/types.h before sys/param.h - prevents UINT32_C and friends.
35	*/
36	#include <iprt/types.h>
37	#include <sys/param.h>
38	#undef PVM
39
40	#include <IOKit/IOLib.h> /* Assert as function */
41
42	#include "../SUPDrvInternal.h"
43	#include <VBox/version.h>
44	#include <iprt/asm.h>
45	#include <iprt/asm-amd64-x86.h>
46	#include <iprt/initterm.h>
47	#include <iprt/assert.h>
48	#include <iprt/spinlock.h>
49	#include <iprt/semaphore.h>
50	#include <iprt/process.h>
51	#include <iprt/alloc.h>
52	#include <iprt/power.h>
53	#include <iprt/dbg.h>
54	#include <VBox/err.h>
55	#include <VBox/log.h>
56
57	#include <mach/kmod.h>
58	#include <miscfs/devfs/devfs.h>
59	#include <sys/conf.h>
60	#include <sys/errno.h>
61	#include <sys/ioccom.h>
62	#include <sys/malloc.h>
63	#include <sys/proc.h>
64	#include <sys/kauth.h>
65	#include <IOKit/IOService.h>
66	#include <IOKit/IOUserClient.h>
67	#include <IOKit/pwr_mgt/RootDomain.h>
68	#include <IOKit/IODeviceTreeSupport.h>
69
70	#ifdef VBOX_WITH_HOST_VMX
71	# include <libkern/version.h>
72	RT_C_DECLS_BEGIN
73	# include <i386/vmx.h>
74	RT_C_DECLS_END
75	#endif
76
77
78	/*******************************************************************************
79	* Defined Constants And Macros *
80	*******************************************************************************/
81
82	/** The system device node name. */
83	#define DEVICE_NAME_SYS "vboxdrv"
84	/** The user device node name. */
85	#define DEVICE_NAME_USR "vboxdrvu"
86
87
88
89	/*******************************************************************************
90	* Internal Functions *
91	*******************************************************************************/
92	RT_C_DECLS_BEGIN
93	static kern_return_t VBoxDrvDarwinStart(struct kmod_info pKModInfo, void pvData);
94	static kern_return_t VBoxDrvDarwinStop(struct kmod_info pKModInfo, void pvData);
95
96	static int VBoxDrvDarwinOpen(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess);
97	static int VBoxDrvDarwinClose(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess);
98	static int VBoxDrvDarwinIOCtl(dev_t Dev, u_long iCmd, caddr_t pData, int fFlags, struct proc *pProcess);
99	static int VBoxDrvDarwinIOCtlSlow(PSUPDRVSESSION pSession, u_long iCmd, caddr_t pData, struct proc *pProcess);
100
101	static int VBoxDrvDarwinErr2DarwinErr(int rc);
102
103	static IOReturn VBoxDrvDarwinSleepHandler(void pvTarget, void pvRefCon, UInt32 uMessageType, IOService pProvider, void pvMessageArgument, vm_size_t argSize);
104	RT_C_DECLS_END
105
106	static void vboxdrvDarwinResolveSymbols(void);
107
108
109	/*******************************************************************************
110	* Structures and Typedefs *
111	*******************************************************************************/
112	/**
113	* The service class.
114	* This is just a formality really.
115	*/
116	class org_virtualbox_SupDrv : public IOService
117	{
118	OSDeclareDefaultStructors(org_virtualbox_SupDrv);
119
120	public:
121	virtual bool init(OSDictionary *pDictionary = 0);
122	virtual void free(void);
123	virtual bool start(IOService *pProvider);
124	virtual void stop(IOService *pProvider);
125	virtual IOService probe(IOService pProvider, SInt32 *pi32Score);
126	virtual bool terminate(IOOptionBits fOptions);
127	};
128
129	OSDefineMetaClassAndStructors(org_virtualbox_SupDrv, IOService);
130
131
132	/**
133	* An attempt at getting that clientDied() notification.
134	* I don't think it'll work as I cannot figure out where/what creates the correct
135	* port right.
136	*/
137	class org_virtualbox_SupDrvClient : public IOUserClient
138	{
139	OSDeclareDefaultStructors(org_virtualbox_SupDrvClient);
140
141	private:
142	PSUPDRVSESSION m_pSession; /*< The session. /
143	task_t m_Task; /*< The client task. /
144	org_virtualbox_SupDrv m_pProvider; /< The service provider. /
145
146	public:
147	virtual bool initWithTask(task_t OwningTask, void *pvSecurityId, UInt32 u32Type);
148	virtual bool start(IOService *pProvider);
149	static void sessionClose(RTPROCESS Process);
150	virtual IOReturn clientClose(void);
151	virtual IOReturn clientDied(void);
152	virtual bool terminate(IOOptionBits fOptions = 0);
153	virtual bool finalize(IOOptionBits fOptions);
154	virtual void stop(IOService *pProvider);
155	};
156
157	OSDefineMetaClassAndStructors(org_virtualbox_SupDrvClient, IOUserClient);
158
159
160
161	/*******************************************************************************
162	* Global Variables *
163	*******************************************************************************/
164	/**
165	* Declare the module stuff.
166	*/
167	RT_C_DECLS_BEGIN
168	extern kern_return_t _start(struct kmod_info pKModInfo, void pvData);
169	extern kern_return_t _stop(struct kmod_info pKModInfo, void pvData);
170
171	KMOD_EXPLICIT_DECL(VBoxDrv, VBOX_VERSION_STRING, _start, _stop)
172	DECLHIDDEN(kmod_start_func_t *) _realmain = VBoxDrvDarwinStart;
173	DECLHIDDEN(kmod_stop_func_t *) _antimain = VBoxDrvDarwinStop;
174	DECLHIDDEN(int) _kext_apple_cc = __APPLE_CC__;
175	RT_C_DECLS_END
176
177
178	/**
179	* Device extention & session data association structure.
180	*/
181	static SUPDRVDEVEXT g_DevExt;
182
183	/**
184	* The character device switch table for the driver.
185	*/
186	static struct cdevsw g_DevCW =
187	{
188	/** @todo g++ doesn't like this syntax - it worked with gcc before renaming to .cpp. */
189	/.d_open = /VBoxDrvDarwinOpen,
190	/.d_close = /VBoxDrvDarwinClose,
191	/.d_read = /eno_rdwrt,
192	/.d_write = /eno_rdwrt,
193	/.d_ioctl = /VBoxDrvDarwinIOCtl,
194	/.d_stop = /eno_stop,
195	/.d_reset = /eno_reset,
196	/.d_ttys = /NULL,
197	/.d_select= /eno_select,
198	/.d_mmap = /eno_mmap,
199	/.d_strategy = /eno_strat,
200	/.d_getc = /eno_getc,
201	/.d_putc = /eno_putc,
202	/.d_type = /0
203	};
204
205	/** Major device number. */
206	static int g_iMajorDeviceNo = -1;
207	/** Registered devfs device handle for the system device. */
208	static void *g_hDevFsDeviceSys = NULL;
209	/** Registered devfs device handle for the user device. */
210	static void *g_hDevFsDeviceUsr = NULL;
211
212	/** Spinlock protecting g_apSessionHashTab. */
213	static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
214	/** Hash table */
215	static PSUPDRVSESSION g_apSessionHashTab[19];
216	/** Calculates the index into g_apSessionHashTab.*/
217	#define SESSION_HASH(pid) ((pid) % RT_ELEMENTS(g_apSessionHashTab))
218	/** The number of open sessions. */
219	static int32_t volatile g_cSessions = 0;
220	/** The notifier handle for the sleep callback handler. */
221	static IONotifier *g_pSleepNotifier = NULL;
222
223	/** Pointer to vmx_suspend(). */
224	static PFNRT g_pfnVmxSuspend = NULL;
225	/** Pointer to vmx_resume(). */
226	static PFNRT g_pfnVmxResume = NULL;
227	/** Pointer to vmx_use_count. */
228	static int volatile *g_pVmxUseCount = NULL;
229
230
231	/**
232	* Start the kernel module.
233	*/
234	static kern_return_t VBoxDrvDarwinStart(struct kmod_info pKModInfo, void pvData)
235	{
236	int rc;
237	#ifdef DEBUG
238	printf("VBoxDrvDarwinStart\n");
239	#endif
240
241	/*
242	* Initialize IPRT.
243	*/
244	rc = RTR0Init(0);
245	if (RT_SUCCESS(rc))
246	{
247	/*
248	* Initialize the device extension.
249	*/
250	rc = supdrvInitDevExt(&g_DevExt, sizeof(SUPDRVSESSION));
251	if (RT_SUCCESS(rc))
252	{
253	/*
254	* Initialize the session hash table.
255	*/
256	memset(g_apSessionHashTab, 0, sizeof(g_apSessionHashTab)); /* paranoia */
257	rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxDrvDarwin");
258	if (RT_SUCCESS(rc))
259	{
260	/*
261	* Registering ourselves as a character device.
262	*/
263	g_iMajorDeviceNo = cdevsw_add(-1, &g_DevCW);
264	if (g_iMajorDeviceNo >= 0)
265	{
266	#ifdef VBOX_WITH_HARDENING
267	g_hDevFsDeviceSys = devfs_make_node(makedev(g_iMajorDeviceNo, 0), DEVFS_CHAR,
268	UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME_SYS);
269	#else
270	g_hDevFsDeviceSys = devfs_make_node(makedev(g_iMajorDeviceNo, 0), DEVFS_CHAR,
271	UID_ROOT, GID_WHEEL, 0666, DEVICE_NAME_SYS);
272	#endif
273	if (g_hDevFsDeviceSys)
274	{
275	g_hDevFsDeviceUsr = devfs_make_node(makedev(g_iMajorDeviceNo, 1), DEVFS_CHAR,
276	UID_ROOT, GID_WHEEL, 0666, DEVICE_NAME_USR);
277	if (g_hDevFsDeviceUsr)
278	{
279	LogRel(("VBoxDrv: version " VBOX_VERSION_STRING " r%d; IOCtl version %#x; IDC version %#x; dev major=%d\n",
280	VBOX_SVN_REV, SUPDRV_IOC_VERSION, SUPDRV_IDC_VERSION, g_iMajorDeviceNo));
281
282	/* Register a sleep/wakeup notification callback */
283	g_pSleepNotifier = registerPrioritySleepWakeInterest(&VBoxDrvDarwinSleepHandler, &g_DevExt, NULL);
284	if (g_pSleepNotifier == NULL)
285	LogRel(("VBoxDrv: register for sleep/wakeup events failed\n"));
286
287	/* Find kernel symbols that are kind of optional. */
288	vboxdrvDarwinResolveSymbols();
289	return KMOD_RETURN_SUCCESS;
290	}
291
292	LogRel(("VBoxDrv: devfs_make_node(makedev(%d,1),,,,%s) failed\n", g_iMajorDeviceNo, DEVICE_NAME_USR));
293	devfs_remove(g_hDevFsDeviceSys);
294	g_hDevFsDeviceSys = NULL;
295	}
296	else
297	LogRel(("VBoxDrv: devfs_make_node(makedev(%d,0),,,,%s) failed\n", g_iMajorDeviceNo, DEVICE_NAME_SYS));
298
299	cdevsw_remove(g_iMajorDeviceNo, &g_DevCW);
300	g_iMajorDeviceNo = -1;
301	}
302	else
303	LogRel(("VBoxDrv: cdevsw_add failed (%d)\n", g_iMajorDeviceNo));
304	RTSpinlockDestroy(g_Spinlock);
305	g_Spinlock = NIL_RTSPINLOCK;
306	}
307	else
308	LogRel(("VBoxDrv: RTSpinlockCreate failed (rc=%d)\n", rc));
309	supdrvDeleteDevExt(&g_DevExt);
310	}
311	else
312	printf("VBoxDrv: failed to initialize device extension (rc=%d)\n", rc);
313	RTR0TermForced();
314	}
315	else
316	printf("VBoxDrv: failed to initialize IPRT (rc=%d)\n", rc);
317
318	memset(&g_DevExt, 0, sizeof(g_DevExt));
319	return KMOD_RETURN_FAILURE;
320	}
321
322
323	/**
324	* Resolves kernel symbols we want (but may do without).
325	*/
326	static void vboxdrvDarwinResolveSymbols(void)
327	{
328	RTDBGKRNLINFO hKrnlInfo;
329	int rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0);
330	if (RT_SUCCESS(rc))
331	{
332	/* The VMX stuff. */
333	int rc1 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_resume", (void **)&g_pfnVmxResume);
334	int rc2 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_suspend", (void **)&g_pfnVmxSuspend);
335	int rc3 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_use_count", (void **)&g_pVmxUseCount);
336	if (RT_SUCCESS(rc1) && RT_SUCCESS(rc2) && RT_SUCCESS(rc3))
337	{
338	LogRel(("VBoxDrv: vmx_resume=%p vmx_suspend=%p vmx_use_count=%p (%d) cr4=%#x\n",
339	g_pfnVmxResume, g_pfnVmxSuspend, g_pVmxUseCount, *g_pVmxUseCount, ASMGetCR4() ));
340	}
341	else
342	{
343	LogRel(("VBoxDrv: failed to resolve vmx stuff: vmx_resume=%Rrc vmx_suspend=%Rrc vmx_use_count=%Rrc", rc1, rc2, rc3));
344	g_pfnVmxResume = NULL;
345	g_pfnVmxSuspend = NULL;
346	g_pVmxUseCount = NULL;
347	}
348
349	RTR0DbgKrnlInfoRelease(hKrnlInfo);
350	}
351	else
352	LogRel(("VBoxDrv: Failed to open kernel symbols, rc=%Rrc\n", rc));
353	}
354
355
356	/**
357	* Stop the kernel module.
358	*/
359	static kern_return_t VBoxDrvDarwinStop(struct kmod_info pKModInfo, void pvData)
360	{
361	int rc;
362	LogFlow(("VBoxDrvDarwinStop\n"));
363
364	/** @todo I've got a nagging feeling that we'll have to keep track of users and refuse
365	* unloading if we're busy. Investigate and implement this! */
366
367	/*
368	* Undo the work done during start (in reverse order).
369	*/
370	if (g_pSleepNotifier)
371	{
372	g_pSleepNotifier->remove();
373	g_pSleepNotifier = NULL;
374	}
375
376	devfs_remove(g_hDevFsDeviceUsr);
377	g_hDevFsDeviceUsr = NULL;
378
379	devfs_remove(g_hDevFsDeviceSys);
380	g_hDevFsDeviceSys = NULL;
381
382	rc = cdevsw_remove(g_iMajorDeviceNo, &g_DevCW);
383	Assert(rc == g_iMajorDeviceNo);
384	g_iMajorDeviceNo = -1;
385
386	supdrvDeleteDevExt(&g_DevExt);
387
388	rc = RTSpinlockDestroy(g_Spinlock);
389	AssertRC(rc);
390	g_Spinlock = NIL_RTSPINLOCK;
391
392	RTR0TermForced();
393
394	memset(&g_DevExt, 0, sizeof(g_DevExt));
395	#ifdef DEBUG
396	printf("VBoxDrvDarwinStop - done\n");
397	#endif
398	return KMOD_RETURN_SUCCESS;
399	}
400
401
402	/**
403	* Device open. Called on open /dev/vboxdrv
404	*
405	* @param Dev The device number.
406	* @param fFlags ???.
407	* @param fDevType ???.
408	* @param pProcess The process issuing this request.
409	*/
410	static int VBoxDrvDarwinOpen(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess)
411	{
412	#ifdef DEBUG_DARWIN_GIP
413	char szName[128];
414	szName[0] = '\0';
415	proc_name(proc_pid(pProcess), szName, sizeof(szName));
416	Log(("VBoxDrvDarwinOpen: pid=%d '%s'\n", proc_pid(pProcess), szName));
417	#endif
418
419	/*
420	* Only two minor devices numbers are allowed.
421	*/
422	if (minor(Dev) != 0 && minor(Dev) != 1)
423	return EACCES;
424
425	/*
426	* Find the session created by org_virtualbox_SupDrvClient, fail
427	* if no such session, and mark it as opened. We set the uid & gid
428	* here too, since that is more straight forward at this point.
429	*/
430	const bool fUnrestricted = minor(Dev) == 0;
431	int rc = VINF_SUCCESS;
432	PSUPDRVSESSION pSession = NULL;
433	kauth_cred_t pCred = kauth_cred_proc_ref(pProcess);
434	if (pCred)
435	{
436	#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
437	RTUID Uid = kauth_cred_getruid(pCred);
438	RTGID Gid = kauth_cred_getrgid(pCred);
439	#else
440	RTUID Uid = pCred->cr_ruid;
441	RTGID Gid = pCred->cr_rgid;
442	#endif
443	RTPROCESS Process = RTProcSelf();
444	unsigned iHash = SESSION_HASH(Process);
445	RTSpinlockAcquire(g_Spinlock);
446
447	pSession = g_apSessionHashTab[iHash];
448	while (pSession && pSession->Process != Process)
449	pSession = pSession->pNextHash;
450	if (pSession)
451	{
452	if (!pSession->fOpened)
453	{
454	pSession->fOpened = true;
455	pSession->fUnrestricted = fUnrestricted;
456	pSession->Uid = Uid;
457	pSession->Gid = Gid;
458	}
459	else
460	rc = VERR_ALREADY_LOADED;
461	}
462	else
463	rc = VERR_GENERAL_FAILURE;
464
465	RTSpinlockReleaseNoInts(g_Spinlock);
466	#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
467	kauth_cred_unref(&pCred);
468	#else /* 10.4 */
469	/* The 10.4u SDK headers and 10.4.11 kernel source have inconsistent definitions
470	of kauth_cred_unref(), so use the other (now deprecated) API for releasing it. */
471	kauth_cred_rele(pCred);
472	#endif /* 10.4 */
473	}
474	else
475	rc = VERR_INVALID_PARAMETER;
476
477	#ifdef DEBUG_DARWIN_GIP
478	OSDBGPRINT(("VBoxDrvDarwinOpen: pid=%d '%s' pSession=%p rc=%d\n", proc_pid(pProcess), szName, pSession, rc));
479	#else
480	Log(("VBoxDrvDarwinOpen: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, proc_pid(pProcess)));
481	#endif
482	return VBoxDrvDarwinErr2DarwinErr(rc);
483	}
484
485
486	/**
487	* Close device.
488	*/
489	static int VBoxDrvDarwinClose(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess)
490	{
491	Log(("VBoxDrvDarwinClose: pid=%d\n", (int)RTProcSelf()));
492	Assert(proc_pid(pProcess) == (int)RTProcSelf());
493
494	/*
495	* Hand the session closing to org_virtualbox_SupDrvClient.
496	*/
497	org_virtualbox_SupDrvClient::sessionClose(RTProcSelf());
498	return 0;
499	}
500
501
502	/**
503	* Device I/O Control entry point.
504	*
505	* @returns Darwin for slow IOCtls and VBox status code for the fast ones.
506	* @param Dev The device number (major+minor).
507	* @param iCmd The IOCtl command.
508	* @param pData Pointer to the data (if any it's a SUPDRVIOCTLDATA (kernel copy)).
509	* @param fFlags Flag saying we're a character device (like we didn't know already).
510	* @param pProcess The process issuing this request.
511	*/
512	static int VBoxDrvDarwinIOCtl(dev_t Dev, u_long iCmd, caddr_t pData, int fFlags, struct proc *pProcess)
513	{
514	const bool fUnrestricted = minor(Dev) == 0;
515	const RTPROCESS Process = proc_pid(pProcess);
516	const unsigned iHash = SESSION_HASH(Process);
517	PSUPDRVSESSION pSession;
518
519	/*
520	* Find the session.
521	*/
522	RTSpinlockAcquire(g_Spinlock);
523	pSession = g_apSessionHashTab[iHash];
524	while (pSession && pSession->Process != Process && pSession->fUnrestricted == fUnrestricted && pSession->fOpened)
525	pSession = pSession->pNextHash;
526	RTSpinlockReleaseNoInts(g_Spinlock);
527	if (!pSession)
528	{
529	OSDBGPRINT(("VBoxDrvDarwinIOCtl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d iCmd=%#lx\n",
530	(int)Process, iCmd));
531	return EINVAL;
532	}
533
534	/*
535	* Deal with the two high-speed IOCtl that takes it's arguments from
536	* the session and iCmd, and only returns a VBox status code.
537	*/
538	if ( ( iCmd == SUP_IOCTL_FAST_DO_RAW_RUN
539	\|\| iCmd == SUP_IOCTL_FAST_DO_HM_RUN
540	\|\| iCmd == SUP_IOCTL_FAST_DO_NOP)
541	&& fUnrestricted)
542	return supdrvIOCtlFast(iCmd, (uint32_t )pData, &g_DevExt, pSession);
543	return VBoxDrvDarwinIOCtlSlow(pSession, iCmd, pData, pProcess);
544	}
545
546
547	/**
548	* Worker for VBoxDrvDarwinIOCtl that takes the slow IOCtl functions.
549	*
550	* @returns Darwin errno.
551	*
552	* @param pSession The session.
553	* @param iCmd The IOCtl command.
554	* @param pData Pointer to the kernel copy of the SUPDRVIOCTLDATA buffer.
555	* @param pProcess The calling process.
556	*/
557	static int VBoxDrvDarwinIOCtlSlow(PSUPDRVSESSION pSession, u_long iCmd, caddr_t pData, struct proc *pProcess)
558	{
559	LogFlow(("VBoxDrvDarwinIOCtlSlow: pSession=%p iCmd=%p pData=%p pProcess=%p\n", pSession, iCmd, pData, pProcess));
560
561
562	/*
563	* Buffered or unbuffered?
564	*/
565	PSUPREQHDR pHdr;
566	user_addr_t pUser = 0;
567	void *pvPageBuf = NULL;
568	uint32_t cbReq = IOCPARM_LEN(iCmd);
569	if ((IOC_DIRMASK & iCmd) == IOC_INOUT)
570	{
571	pHdr = (PSUPREQHDR)pData;
572	if (RT_UNLIKELY(cbReq < sizeof(*pHdr)))
573	{
574	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: cbReq=%#x < %#x; iCmd=%#lx\n", cbReq, (int)sizeof(*pHdr), iCmd));
575	return EINVAL;
576	}
577	if (RT_UNLIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
578	{
579	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: bad magic fFlags=%#x; iCmd=%#lx\n", pHdr->fFlags, iCmd));
580	return EINVAL;
581	}
582	if (RT_UNLIKELY( RT_MAX(pHdr->cbIn, pHdr->cbOut) != cbReq
583	\|\| pHdr->cbIn < sizeof(*pHdr)
584	\|\| pHdr->cbOut < sizeof(*pHdr)))
585	{
586	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: max(%#x,%#x) != %#x; iCmd=%#lx\n", pHdr->cbIn, pHdr->cbOut, cbReq, iCmd));
587	return EINVAL;
588	}
589	}
590	else if ((IOC_DIRMASK & iCmd) == IOC_VOID && !cbReq)
591	{
592	/*
593	* Get the header and figure out how much we're gonna have to read.
594	*/
595	SUPREQHDR Hdr;
596	pUser = (user_addr_t)(void *)pData;
597	int rc = copyin(pUser, &Hdr, sizeof(Hdr));
598	if (RT_UNLIKELY(rc))
599	{
600	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyin(%llx,Hdr,) -> %#x; iCmd=%#lx\n", (unsigned long long)pUser, rc, iCmd));
601	return rc;
602	}
603	if (RT_UNLIKELY((Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
604	{
605	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: bad magic fFlags=%#x; iCmd=%#lx\n", Hdr.fFlags, iCmd));
606	return EINVAL;
607	}
608	cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
609	if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr)
610	\|\| Hdr.cbOut < sizeof(Hdr)
611	\|\| cbReq > _1M*16))
612	{
613	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: max(%#x,%#x); iCmd=%#lx\n", Hdr.cbIn, Hdr.cbOut, iCmd));
614	return EINVAL;
615	}
616
617	/*
618	* Allocate buffer and copy in the data.
619	*/
620	pHdr = (PSUPREQHDR)RTMemTmpAlloc(cbReq);
621	if (!pHdr)
622	pvPageBuf = pHdr = (PSUPREQHDR)IOMallocAligned(RT_ALIGN_Z(cbReq, PAGE_SIZE), 8);
623	if (RT_UNLIKELY(!pHdr))
624	{
625	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: failed to allocate buffer of %d bytes; iCmd=%#lx\n", cbReq, iCmd));
626	return ENOMEM;
627	}
628	rc = copyin(pUser, pHdr, Hdr.cbIn);
629	if (RT_UNLIKELY(rc))
630	{
631	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyin(%llx,%p,%#x) -> %#x; iCmd=%#lx\n",
632	(unsigned long long)pUser, pHdr, Hdr.cbIn, rc, iCmd));
633	if (pvPageBuf)
634	IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
635	else
636	RTMemTmpFree(pHdr);
637	return rc;
638	}
639	}
640	else
641	{
642	Log(("VBoxDrvDarwinIOCtlSlow: huh? cbReq=%#x iCmd=%#lx\n", cbReq, iCmd));
643	return EINVAL;
644	}
645
646	/*
647	* Process the IOCtl.
648	*/
649	int rc = supdrvIOCtl(iCmd, &g_DevExt, pSession, pHdr);
650	if (RT_LIKELY(!rc))
651	{
652	/*
653	* If not buffered, copy back the buffer before returning.
654	*/
655	if (pUser)
656	{
657	uint32_t cbOut = pHdr->cbOut;
658	if (cbOut > cbReq)
659	{
660	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: too much output! %#x > %#x; uCmd=%#lx!\n", cbOut, cbReq, iCmd));
661	cbOut = cbReq;
662	}
663	rc = copyout(pHdr, pUser, cbOut);
664	if (RT_UNLIKELY(rc))
665	OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyout(%p,%llx,%#x) -> %d; uCmd=%#lx!\n",
666	pHdr, (unsigned long long)pUser, cbOut, rc, iCmd));
667
668	/* cleanup */
669	if (pvPageBuf)
670	IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
671	else
672	RTMemTmpFree(pHdr);
673	}
674	}
675	else
676	{
677	/*
678	* The request failed, just clean up.
679	*/
680	if (pUser)
681	{
682	if (pvPageBuf)
683	IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
684	else
685	RTMemTmpFree(pHdr);
686	}
687
688	Log(("VBoxDrvDarwinIOCtlSlow: pid=%d iCmd=%lx pData=%p failed, rc=%d\n", proc_pid(pProcess), iCmd, (void *)pData, rc));
689	rc = EINVAL;
690	}
691
692	Log2(("VBoxDrvDarwinIOCtlSlow: returns %d\n", rc));
693	return rc;
694	}
695
696
697	/**
698	* The SUPDRV IDC entry point.
699	*
700	* @returns VBox status code, see supdrvIDC.
701	* @param iReq The request code.
702	* @param pReq The request.
703	*/
704	int VBOXCALL SUPDrvDarwinIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
705	{
706	PSUPDRVSESSION pSession;
707
708	/*
709	* Some quick validations.
710	*/
711	if (RT_UNLIKELY(!VALID_PTR(pReq)))
712	return VERR_INVALID_POINTER;
713
714	pSession = pReq->pSession;
715	if (pSession)
716	{
717	if (RT_UNLIKELY(!VALID_PTR(pSession)))
718	return VERR_INVALID_PARAMETER;
719	if (RT_UNLIKELY(pSession->pDevExt != &g_DevExt))
720	return VERR_INVALID_PARAMETER;
721	}
722	else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
723	return VERR_INVALID_PARAMETER;
724
725	/*
726	* Do the job.
727	*/
728	return supdrvIDC(uReq, &g_DevExt, pSession, pReq);
729	}
730
731
732	/**
733	* Initializes any OS specific object creator fields.
734	*/
735	void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
736	{
737	NOREF(pObj);
738	NOREF(pSession);
739	}
740
741
742	/**
743	* Checks if the session can access the object.
744	*
745	* @returns true if a decision has been made.
746	* @returns false if the default access policy should be applied.
747	*
748	* @param pObj The object in question.
749	* @param pSession The session wanting to access the object.
750	* @param pszObjName The object name, can be NULL.
751	* @param prc Where to store the result when returning true.
752	*/
753	bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char pszObjName, int prc)
754	{
755	NOREF(pObj);
756	NOREF(pSession);
757	NOREF(pszObjName);
758	NOREF(prc);
759	return false;
760	}
761
762	/**
763	* Callback for blah blah blah.
764	*/
765	IOReturn VBoxDrvDarwinSleepHandler(void * /* pvTarget /, void pvRefCon, UInt32 uMessageType, IOService * /* pProvider /, void /* pvMessageArgument /, vm_size_t / argSize */)
766	{
767	LogFlow(("VBoxDrv: Got sleep/wake notice. Message type was %X\n", (uint)uMessageType));
768
769	if (uMessageType == kIOMessageSystemWillSleep)
770	RTPowerSignalEvent(RTPOWEREVENT_SUSPEND);
771	else if (uMessageType == kIOMessageSystemHasPoweredOn)
772	RTPowerSignalEvent(RTPOWEREVENT_RESUME);
773
774	acknowledgeSleepWakeNotification(pvRefCon);
775
776	return 0;
777	}
778
779
780	/**
781	* @copydoc SUPR0EnableVTx
782	*/
783	int VBOXCALL supdrvOSEnableVTx(bool fEnable)
784	{
785	#ifdef VBOX_WITH_HOST_VMX
786	int rc;
787	if ( version_major >= 10 /* 10 = 10.6.x = Snow Leopard */
788	&& g_pfnVmxSuspend
789	&& g_pfnVmxResume
790	&& g_pVmxUseCount)
791	{
792	if (fEnable)
793	{
794	rc = host_vmxon(false /* exclusive */);
795	if (rc == VMX_OK)
796	rc = VINF_SUCCESS;
797	else if (rc == VMX_UNSUPPORTED)
798	rc = VERR_VMX_NO_VMX;
799	else if (rc == VMX_INUSE)
800	rc = VERR_VMX_IN_VMX_ROOT_MODE;
801	else /* shouldn't happen, but just in case. */
802	{
803	LogRel(("host_vmxon returned %d\n", rc));
804	rc = VERR_UNRESOLVED_ERROR;
805	}
806	LogRel(("VBoxDrv: host_vmxon -> vmx_use_count=%d rc=%Rrc\n", *g_pVmxUseCount, rc));
807	}
808	else
809	{
810	host_vmxoff();
811	rc = VINF_SUCCESS;
812	LogRel(("VBoxDrv: host_vmxoff -> vmx_use_count=%d\n", *g_pVmxUseCount));
813	}
814	}
815	else
816	{
817	/* In 10.5.x the host_vmxon is severely broken! Don't use it, it will
818	frequnetly panic the host. */
819	rc = VERR_NOT_SUPPORTED;
820	}
821	return rc;
822	#else
823	return VERR_NOT_SUPPORTED;
824	#endif
825	}
826
827
828	/**
829	* @copydoc SUPR0SuspendVTxOnCpu
830	*/
831	bool VBOXCALL supdrvOSSuspendVTxOnCpu(void)
832	{
833	#ifdef VBOX_WITH_HOST_VMX
834	/*
835	* Consult the VMX usage counter, don't try suspend if not enabled.
836	*
837	* Note! The host_vmxon/off code is still race prone since, but this is
838	* currently the best we can do without always enable VMX when
839	* loading the driver.
840	*/
841	if ( g_pVmxUseCount
842	&& *g_pVmxUseCount > 0)
843	{
844	g_pfnVmxSuspend();
845	return true;
846	}
847	return false;
848	#else
849	return false;
850	#endif
851	}
852
853
854	/**
855	* @copydoc SUPR0ResumeVTxOnCpu
856	*/
857	void VBOXCALL supdrvOSResumeVTxOnCpu(bool fSuspended)
858	{
859	#ifdef VBOX_WITH_HOST_VMX
860	/*
861	* Don't consult the counter here, the state knows better.
862	* We're executing with interrupts disabled and anyone racing us with
863	* disabling VT-x will be waiting in the rendezvous code.
864	*/
865	if ( fSuspended
866	&& g_pfnVmxResume)
867	g_pfnVmxResume();
868	else
869	Assert(!fSuspended);
870	#else
871	Assert(!fSuspended);
872	#endif
873	}
874
875
876	bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
877	{
878	NOREF(pDevExt);
879	return false;
880	}
881
882
883	void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
884	{
885	#if 1
886	NOREF(pDevExt); NOREF(pImage);
887	#else
888	/*
889	* Try store the image load address in NVRAM so we can retrived it on panic.
890	* Note! This only works if you're root! - Acutally, it doesn't work at all at the moment. FIXME!
891	*/
892	IORegistryEntry *pEntry = IORegistryEntry::fromPath("/options", gIODTPlane);
893	if (pEntry)
894	{
895	char szVar[80];
896	RTStrPrintf(szVar, sizeof(szVar), "vboximage"/-%s/, pImage->szName);
897	char szValue[48];
898	RTStrPrintf(szValue, sizeof(szValue), "%#llx,%#llx", (uint64_t)(uintptr_t)pImage->pvImage,
899	(uint64_t)(uintptr_t)pImage->pvImage + pImage->cbImageBits - 1);
900	bool fRc = pEntry->setProperty(szVar, szValue); NOREF(fRc);
901	pEntry->release();
902	SUPR0Printf("fRc=%d '%s'='%s'\n", fRc, szVar, szValue);
903	}
904	/*else
905	SUPR0Printf("failed to find /options in gIODTPlane\n");*/
906	#endif
907	}
908
909
910	int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
911	{
912	NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
913	return VERR_NOT_SUPPORTED;
914	}
915
916
917	int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void pv, const uint8_t pbImageBits)
918	{
919	NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
920	return VERR_NOT_SUPPORTED;
921	}
922
923
924	int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
925	{
926	NOREF(pDevExt); NOREF(pImage); NOREF(pbImageBits); NOREF(pReq);
927	return VERR_NOT_SUPPORTED;
928	}
929
930
931	void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
932	{
933	NOREF(pDevExt); NOREF(pImage);
934	}
935
936
937	/**
938	* Converts an IPRT error code to a darwin error code.
939	*
940	* @returns corresponding darwin error code.
941	* @param rc IPRT status code.
942	*/
943	static int VBoxDrvDarwinErr2DarwinErr(int rc)
944	{
945	switch (rc)
946	{
947	case VINF_SUCCESS: return 0;
948	case VERR_GENERAL_FAILURE: return EACCES;
949	case VERR_INVALID_PARAMETER: return EINVAL;
950	case VERR_INVALID_MAGIC: return EILSEQ;
951	case VERR_INVALID_HANDLE: return ENXIO;
952	case VERR_INVALID_POINTER: return EFAULT;
953	case VERR_LOCK_FAILED: return ENOLCK;
954	case VERR_ALREADY_LOADED: return EEXIST;
955	case VERR_PERMISSION_DENIED: return EPERM;
956	case VERR_VERSION_MISMATCH: return ENOSYS;
957	}
958
959	return EPERM;
960	}
961
962
963	RTDECL(int) SUPR0Printf(const char *pszFormat, ...)
964	{
965	va_list va;
966	char szMsg[512];
967
968	va_start(va, pszFormat);
969	RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, va);
970	va_end(va);
971	szMsg[sizeof(szMsg) - 1] = '\0';
972
973	printf("%s", szMsg);
974	return 0;
975	}
976
977
978	/*
979	*
980	* org_virtualbox_SupDrv
981	*
982	*/
983
984
985	/**
986	* Initialize the object.
987	*/
988	bool org_virtualbox_SupDrv::init(OSDictionary *pDictionary)
989	{
990	LogFlow(("org_virtualbox_SupDrv::init([%p], %p)\n", this, pDictionary));
991	if (IOService::init(pDictionary))
992	{
993	/* init members. */
994	return true;
995	}
996	return false;
997	}
998
999
1000	/**
1001	* Free the object.
1002	*/
1003	void org_virtualbox_SupDrv::free(void)
1004	{
1005	LogFlow(("IOService::free([%p])\n", this));
1006	IOService::free();
1007	}
1008
1009
1010	/**
1011	* Check if it's ok to start this service.
1012	* It's always ok by us, so it's up to IOService to decide really.
1013	*/
1014	IOService org_virtualbox_SupDrv::probe(IOService pProvider, SInt32 *pi32Score)
1015	{
1016	LogFlow(("org_virtualbox_SupDrv::probe([%p])\n", this));
1017	return IOService::probe(pProvider, pi32Score);
1018	}
1019
1020
1021	/**
1022	* Start this service.
1023	*/
1024	bool org_virtualbox_SupDrv::start(IOService *pProvider)
1025	{
1026	LogFlow(("org_virtualbox_SupDrv::start([%p])\n", this));
1027
1028	if (IOService::start(pProvider))
1029	{
1030	/* register the service. */
1031	registerService();
1032	return true;
1033	}
1034	return false;
1035	}
1036
1037
1038	/**
1039	* Stop this service.
1040	*/
1041	void org_virtualbox_SupDrv::stop(IOService *pProvider)
1042	{
1043	LogFlow(("org_virtualbox_SupDrv::stop([%p], %p)\n", this, pProvider));
1044	IOService::stop(pProvider);
1045	}
1046
1047
1048	/**
1049	* Termination request.
1050	*
1051	* @return true if we're ok with shutting down now, false if we're not.
1052	* @param fOptions Flags.
1053	*/
1054	bool org_virtualbox_SupDrv::terminate(IOOptionBits fOptions)
1055	{
1056	bool fRc;
1057	LogFlow(("org_virtualbox_SupDrv::terminate: reference_count=%d g_cSessions=%d (fOptions=%#x)\n",
1058	KMOD_INFO_NAME.reference_count, ASMAtomicUoReadS32(&g_cSessions), fOptions));
1059	if ( KMOD_INFO_NAME.reference_count != 0
1060	\|\| ASMAtomicUoReadS32(&g_cSessions))
1061	fRc = false;
1062	else
1063	fRc = IOService::terminate(fOptions);
1064	LogFlow(("org_virtualbox_SupDrv::terminate: returns %d\n", fRc));
1065	return fRc;
1066	}
1067
1068
1069	/*
1070	*
1071	* org_virtualbox_SupDrvClient
1072	*
1073	*/
1074
1075
1076	/**
1077	* Initializer called when the client opens the service.
1078	*/
1079	bool org_virtualbox_SupDrvClient::initWithTask(task_t OwningTask, void *pvSecurityId, UInt32 u32Type)
1080	{
1081	LogFlow(("org_virtualbox_SupDrvClient::initWithTask([%p], %#x, %p, %#x) (cur pid=%d proc=%p)\n",
1082	this, OwningTask, pvSecurityId, u32Type, RTProcSelf(), RTR0ProcHandleSelf()));
1083	AssertMsg((RTR0PROCESS)OwningTask == RTR0ProcHandleSelf(), ("%p %p\n", OwningTask, RTR0ProcHandleSelf()));
1084
1085	if (!OwningTask)
1086	return false;
1087	if (IOUserClient::initWithTask(OwningTask, pvSecurityId , u32Type))
1088	{
1089	m_Task = OwningTask;
1090	m_pSession = NULL;
1091	m_pProvider = NULL;
1092	return true;
1093	}
1094	return false;
1095	}
1096
1097
1098	/**
1099	* Start the client service.
1100	*/
1101	bool org_virtualbox_SupDrvClient::start(IOService *pProvider)
1102	{
1103	LogFlow(("org_virtualbox_SupDrvClient::start([%p], %p) (cur pid=%d proc=%p)\n",
1104	this, pProvider, RTProcSelf(), RTR0ProcHandleSelf() ));
1105	AssertMsgReturn((RTR0PROCESS)m_Task == RTR0ProcHandleSelf(),
1106	("%p %p\n", m_Task, RTR0ProcHandleSelf()),
1107	false);
1108
1109	if (IOUserClient::start(pProvider))
1110	{
1111	m_pProvider = OSDynamicCast(org_virtualbox_SupDrv, pProvider);
1112	if (m_pProvider)
1113	{
1114	Assert(!m_pSession);
1115
1116	/*
1117	* Create a new session.
1118	*/
1119	int rc = supdrvCreateSession(&g_DevExt, true /* fUser /, false /fUnrestricted*/, &m_pSession);
1120	if (RT_SUCCESS(rc))
1121	{
1122	m_pSession->fOpened = false;
1123	/* The Uid, Gid and fUnrestricted fields are set on open. */
1124
1125	/*
1126	* Insert it into the hash table, checking that there isn't
1127	* already one for this process first. (One session per proc!)
1128	*/
1129	unsigned iHash = SESSION_HASH(m_pSession->Process);
1130	RTSpinlockAcquire(g_Spinlock);
1131
1132	PSUPDRVSESSION pCur = g_apSessionHashTab[iHash];
1133	if (pCur && pCur->Process != m_pSession->Process)
1134	{
1135	do pCur = pCur->pNextHash;
1136	while (pCur && pCur->Process != m_pSession->Process);
1137	}
1138	if (!pCur)
1139	{
1140	m_pSession->pNextHash = g_apSessionHashTab[iHash];
1141	g_apSessionHashTab[iHash] = m_pSession;
1142	m_pSession->pvSupDrvClient = this;
1143	ASMAtomicIncS32(&g_cSessions);
1144	rc = VINF_SUCCESS;
1145	}
1146	else
1147	rc = VERR_ALREADY_LOADED;
1148
1149	RTSpinlockReleaseNoInts(g_Spinlock);
1150	if (RT_SUCCESS(rc))
1151	{
1152	Log(("org_virtualbox_SupDrvClient::start: created session %p for pid %d\n", m_pSession, (int)RTProcSelf()));
1153	return true;
1154	}
1155
1156	LogFlow(("org_virtualbox_SupDrvClient::start: already got a session for this process (%p)\n", pCur));
1157	supdrvCloseSession(&g_DevExt, m_pSession);
1158	}
1159
1160	m_pSession = NULL;
1161	LogFlow(("org_virtualbox_SupDrvClient::start: rc=%Rrc from supdrvCreateSession\n", rc));
1162	}
1163	else
1164	LogFlow(("org_virtualbox_SupDrvClient::start: %p isn't org_virtualbox_SupDrv\n", pProvider));
1165	}
1166	return false;
1167	}
1168
1169
1170	/**
1171	* Common worker for clientClose and VBoxDrvDarwinClose.
1172	*/
1173	/* static */ void org_virtualbox_SupDrvClient::sessionClose(RTPROCESS Process)
1174	{
1175	/*
1176	* Find the session and remove it from the hash table.
1177	*
1178	* Note! Only one session per process. (Both start() and
1179	* VBoxDrvDarwinOpen makes sure this is so.)
1180	*/
1181	const unsigned iHash = SESSION_HASH(Process);
1182	RTSpinlockAcquire(g_Spinlock);
1183	PSUPDRVSESSION pSession = g_apSessionHashTab[iHash];
1184	if (pSession)
1185	{
1186	if (pSession->Process == Process)
1187	{
1188	g_apSessionHashTab[iHash] = pSession->pNextHash;
1189	pSession->pNextHash = NULL;
1190	ASMAtomicDecS32(&g_cSessions);
1191	}
1192	else
1193	{
1194	PSUPDRVSESSION pPrev = pSession;
1195	pSession = pSession->pNextHash;
1196	while (pSession)
1197	{
1198	if (pSession->Process == Process)
1199	{
1200	pPrev->pNextHash = pSession->pNextHash;
1201	pSession->pNextHash = NULL;
1202	ASMAtomicDecS32(&g_cSessions);
1203	break;
1204	}
1205
1206	/* next */
1207	pPrev = pSession;
1208	pSession = pSession->pNextHash;
1209	}
1210	}
1211	}
1212	RTSpinlockReleaseNoInts(g_Spinlock);
1213	if (!pSession)
1214	{
1215	Log(("SupDrvClient::sessionClose: pSession == NULL, pid=%d; freed already?\n", (int)Process));
1216	return;
1217	}
1218
1219	/*
1220	* Remove it from the client object.
1221	*/
1222	org_virtualbox_SupDrvClient pThis = (org_virtualbox_SupDrvClient )pSession->pvSupDrvClient;
1223	pSession->pvSupDrvClient = NULL;
1224	if (pThis)
1225	{
1226	Assert(pThis->m_pSession == pSession);
1227	pThis->m_pSession = NULL;
1228	}
1229
1230	/*
1231	* Close the session.
1232	*/
1233	supdrvCloseSession(&g_DevExt, pSession);
1234	}
1235
1236
1237	/**
1238	* Client exits normally.
1239	*/
1240	IOReturn org_virtualbox_SupDrvClient::clientClose(void)
1241	{
1242	LogFlow(("org_virtualbox_SupDrvClient::clientClose([%p]) (cur pid=%d proc=%p)\n", this, RTProcSelf(), RTR0ProcHandleSelf()));
1243	AssertMsg((RTR0PROCESS)m_Task == RTR0ProcHandleSelf(), ("%p %p\n", m_Task, RTR0ProcHandleSelf()));
1244
1245	/*
1246	* Clean up the session if it's still around.
1247	*
1248	* We cannot rely 100% on close, and in the case of a dead client
1249	* we'll end up hanging inside vm_map_remove() if we postpone it.
1250	*/
1251	if (m_pSession)
1252	{
1253	sessionClose(RTProcSelf());
1254	Assert(!m_pSession);
1255	}
1256
1257	m_pProvider = NULL;
1258	terminate();
1259
1260	return kIOReturnSuccess;
1261	}
1262
1263
1264	/**
1265	* The client exits abnormally / forgets to do cleanups. (logging)
1266	*/
1267	IOReturn org_virtualbox_SupDrvClient::clientDied(void)
1268	{
1269	LogFlow(("org_virtualbox_SupDrvClient::clientDied([%p]) m_Task=%p R0Process=%p Process=%d\n",
1270	this, m_Task, RTR0ProcHandleSelf(), RTProcSelf()));
1271
1272	/* IOUserClient::clientDied() calls clientClose, so we'll just do the work there. */
1273	return IOUserClient::clientDied();
1274	}
1275
1276
1277	/**
1278	* Terminate the service (initiate the destruction). (logging)
1279	*/
1280	bool org_virtualbox_SupDrvClient::terminate(IOOptionBits fOptions)
1281	{
1282	LogFlow(("org_virtualbox_SupDrvClient::terminate([%p], %#x)\n", this, fOptions));
1283	return IOUserClient::terminate(fOptions);
1284	}
1285
1286
1287	/**
1288	* The final stage of the client service destruction. (logging)
1289	*/
1290	bool org_virtualbox_SupDrvClient::finalize(IOOptionBits fOptions)
1291	{
1292	LogFlow(("org_virtualbox_SupDrvClient::finalize([%p], %#x)\n", this, fOptions));
1293	return IOUserClient::finalize(fOptions);
1294	}
1295
1296
1297	/**
1298	* Stop the client service. (logging)
1299	*/
1300	void org_virtualbox_SupDrvClient::stop(IOService *pProvider)
1301	{
1302	LogFlow(("org_virtualbox_SupDrvClient::stop([%p])\n", this));
1303	IOUserClient::stop(pProvider);
1304	}
1305

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source: vbox/trunk/src/VBox/HostDrivers/Support/darwin/SUPDrv-darwin.cpp@ 44571

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