VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/darwin/SUPDrv-darwin.cpp@ 54581

Last change on this file since 54581 was 54581, checked in by vboxsync, 10 years ago

HostDrivers/Support: add and use supdrvOSAreCpusOfflinedOnSuspend(). FreeBSD, Darwin, Solaris need verification.
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1/* $Id: SUPDrv-darwin.cpp 54581 2015-03-02 14:56:02Z vboxsync $ */
2/** @file
3 * VirtualBox Support Driver - Darwin Specific Code.
4 */
5
6/*
7 * Copyright (C) 2006-2014 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#include <IOKit/usb/IOUSBHIDDriver.h>
70#include <IOKit/bluetooth/IOBluetoothHIDDriver.h>
71#include <IOKit/bluetooth/IOBluetoothHIDDriverTypes.h>
72
73#ifdef VBOX_WITH_HOST_VMX
74# include <libkern/version.h>
75RT_C_DECLS_BEGIN
76# include <i386/vmx.h>
77RT_C_DECLS_END
78#endif
79
80/* Temporary debugging. */
81#define VBOX_PROC_SELFNAME_LEN (20)
82#define VBOX_RETRIEVE_CUR_PROC_NAME(_name) char _name[VBOX_PROC_SELFNAME_LEN]; \
83 proc_selfname(pszProcName, VBOX_PROC_SELFNAME_LEN)
84
85
86/*******************************************************************************
87* Defined Constants And Macros *
88*******************************************************************************/
89
90/** The system device node name. */
91#define DEVICE_NAME_SYS "vboxdrv"
92/** The user device node name. */
93#define DEVICE_NAME_USR "vboxdrvu"
94
95
96
97/*******************************************************************************
98* Internal Functions *
99*******************************************************************************/
100RT_C_DECLS_BEGIN
101static kern_return_t VBoxDrvDarwinStart(struct kmod_info *pKModInfo, void *pvData);
102static kern_return_t VBoxDrvDarwinStop(struct kmod_info *pKModInfo, void *pvData);
103
104static int VBoxDrvDarwinOpen(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess);
105static int VBoxDrvDarwinClose(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess);
106static int VBoxDrvDarwinIOCtl(dev_t Dev, u_long iCmd, caddr_t pData, int fFlags, struct proc *pProcess);
107static int VBoxDrvDarwinIOCtlSlow(PSUPDRVSESSION pSession, u_long iCmd, caddr_t pData, struct proc *pProcess);
108
109static int VBoxDrvDarwinErr2DarwinErr(int rc);
110
111static IOReturn VBoxDrvDarwinSleepHandler(void *pvTarget, void *pvRefCon, UInt32 uMessageType, IOService *pProvider, void *pvMessageArgument, vm_size_t argSize);
112RT_C_DECLS_END
113
114static void vboxdrvDarwinResolveSymbols(void);
115
116
117/*******************************************************************************
118* Structures and Typedefs *
119*******************************************************************************/
120/**
121 * The service class.
122 * This is just a formality really.
123 */
124class org_virtualbox_SupDrv : public IOService
125{
126 OSDeclareDefaultStructors(org_virtualbox_SupDrv);
127
128public:
129 virtual bool init(OSDictionary *pDictionary = 0);
130 virtual void free(void);
131 virtual bool start(IOService *pProvider);
132 virtual void stop(IOService *pProvider);
133 virtual IOService *probe(IOService *pProvider, SInt32 *pi32Score);
134 virtual bool terminate(IOOptionBits fOptions);
135};
136
137OSDefineMetaClassAndStructors(org_virtualbox_SupDrv, IOService);
138
139
140/**
141 * An attempt at getting that clientDied() notification.
142 * I don't think it'll work as I cannot figure out where/what creates the correct
143 * port right.
144 */
145class org_virtualbox_SupDrvClient : public IOUserClient
146{
147 OSDeclareDefaultStructors(org_virtualbox_SupDrvClient);
148
149private:
150 PSUPDRVSESSION m_pSession; /**< The session. */
151 task_t m_Task; /**< The client task. */
152 org_virtualbox_SupDrv *m_pProvider; /**< The service provider. */
153
154public:
155 virtual bool initWithTask(task_t OwningTask, void *pvSecurityId, UInt32 u32Type);
156 virtual bool start(IOService *pProvider);
157 static void sessionClose(RTPROCESS Process);
158 virtual IOReturn clientClose(void);
159 virtual IOReturn clientDied(void);
160 virtual bool terminate(IOOptionBits fOptions = 0);
161 virtual bool finalize(IOOptionBits fOptions);
162 virtual void stop(IOService *pProvider);
163};
164
165OSDefineMetaClassAndStructors(org_virtualbox_SupDrvClient, IOUserClient);
166
167
168
169/*******************************************************************************
170* Global Variables *
171*******************************************************************************/
172/**
173 * Declare the module stuff.
174 */
175RT_C_DECLS_BEGIN
176extern kern_return_t _start(struct kmod_info *pKModInfo, void *pvData);
177extern kern_return_t _stop(struct kmod_info *pKModInfo, void *pvData);
178
179KMOD_EXPLICIT_DECL(VBoxDrv, VBOX_VERSION_STRING, _start, _stop)
180DECLHIDDEN(kmod_start_func_t *) _realmain = VBoxDrvDarwinStart;
181DECLHIDDEN(kmod_stop_func_t *) _antimain = VBoxDrvDarwinStop;
182DECLHIDDEN(int) _kext_apple_cc = __APPLE_CC__;
183RT_C_DECLS_END
184
185
186/**
187 * Device extention & session data association structure.
188 */
189static SUPDRVDEVEXT g_DevExt;
190
191/**
192 * The character device switch table for the driver.
193 */
194static struct cdevsw g_DevCW =
195{
196 /** @todo g++ doesn't like this syntax - it worked with gcc before renaming to .cpp. */
197 /*.d_open = */VBoxDrvDarwinOpen,
198 /*.d_close = */VBoxDrvDarwinClose,
199 /*.d_read = */eno_rdwrt,
200 /*.d_write = */eno_rdwrt,
201 /*.d_ioctl = */VBoxDrvDarwinIOCtl,
202 /*.d_stop = */eno_stop,
203 /*.d_reset = */eno_reset,
204 /*.d_ttys = */NULL,
205 /*.d_select= */eno_select,
206 /*.d_mmap = */eno_mmap,
207 /*.d_strategy = */eno_strat,
208 /*.d_getc = */eno_getc,
209 /*.d_putc = */eno_putc,
210 /*.d_type = */0
211};
212
213/** Major device number. */
214static int g_iMajorDeviceNo = -1;
215/** Registered devfs device handle for the system device. */
216static void *g_hDevFsDeviceSys = NULL;
217/** Registered devfs device handle for the user device. */
218static void *g_hDevFsDeviceUsr = NULL;
219
220/** Spinlock protecting g_apSessionHashTab. */
221static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
222/** Hash table */
223static PSUPDRVSESSION g_apSessionHashTab[19];
224/** Calculates the index into g_apSessionHashTab.*/
225#define SESSION_HASH(pid) ((pid) % RT_ELEMENTS(g_apSessionHashTab))
226/** The number of open sessions. */
227static int32_t volatile g_cSessions = 0;
228/** The notifier handle for the sleep callback handler. */
229static IONotifier *g_pSleepNotifier = NULL;
230
231/** Pointer to vmx_suspend(). */
232static PFNRT g_pfnVmxSuspend = NULL;
233/** Pointer to vmx_resume(). */
234static PFNRT g_pfnVmxResume = NULL;
235/** Pointer to vmx_use_count. */
236static int volatile *g_pVmxUseCount = NULL;
237
238#ifdef SUPDRV_WITH_MSR_PROBER
239/** Pointer to rdmsr_carefully if found. Returns 0 on success. */
240static int (*g_pfnRdMsrCarefully)(uint32_t uMsr, uint32_t *puLow, uint32_t *puHigh) = NULL;
241/** Pointer to rdmsr64_carefully if found. Returns 0 on success. */
242static int (*g_pfnRdMsr64Carefully)(uint32_t uMsr, uint64_t *uValue) = NULL;
243/** Pointer to wrmsr[64]_carefully if found. Returns 0 on success. */
244static int (*g_pfnWrMsr64Carefully)(uint32_t uMsr, uint64_t uValue) = NULL;
245#endif
246
247
248/**
249 * Start the kernel module.
250 */
251static kern_return_t VBoxDrvDarwinStart(struct kmod_info *pKModInfo, void *pvData)
252{
253 int rc;
254#ifdef DEBUG
255 printf("VBoxDrvDarwinStart\n");
256#endif
257
258 /*
259 * Initialize IPRT.
260 */
261 rc = RTR0Init(0);
262 if (RT_SUCCESS(rc))
263 {
264 /*
265 * Initialize the device extension.
266 */
267 rc = supdrvInitDevExt(&g_DevExt, sizeof(SUPDRVSESSION));
268 if (RT_SUCCESS(rc))
269 {
270 /*
271 * Initialize the session hash table.
272 */
273 memset(g_apSessionHashTab, 0, sizeof(g_apSessionHashTab)); /* paranoia */
274 rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxDrvDarwin");
275 if (RT_SUCCESS(rc))
276 {
277 /*
278 * Registering ourselves as a character device.
279 */
280 g_iMajorDeviceNo = cdevsw_add(-1, &g_DevCW);
281 if (g_iMajorDeviceNo >= 0)
282 {
283#ifdef VBOX_WITH_HARDENING
284 g_hDevFsDeviceSys = devfs_make_node(makedev(g_iMajorDeviceNo, 0), DEVFS_CHAR,
285 UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME_SYS);
286#else
287 g_hDevFsDeviceSys = devfs_make_node(makedev(g_iMajorDeviceNo, 0), DEVFS_CHAR,
288 UID_ROOT, GID_WHEEL, 0666, DEVICE_NAME_SYS);
289#endif
290 if (g_hDevFsDeviceSys)
291 {
292 g_hDevFsDeviceUsr = devfs_make_node(makedev(g_iMajorDeviceNo, 1), DEVFS_CHAR,
293 UID_ROOT, GID_WHEEL, 0666, DEVICE_NAME_USR);
294 if (g_hDevFsDeviceUsr)
295 {
296 LogRel(("VBoxDrv: version " VBOX_VERSION_STRING " r%d; IOCtl version %#x; IDC version %#x; dev major=%d\n",
297 VBOX_SVN_REV, SUPDRV_IOC_VERSION, SUPDRV_IDC_VERSION, g_iMajorDeviceNo));
298
299 /* Register a sleep/wakeup notification callback */
300 g_pSleepNotifier = registerPrioritySleepWakeInterest(&VBoxDrvDarwinSleepHandler, &g_DevExt, NULL);
301 if (g_pSleepNotifier == NULL)
302 LogRel(("VBoxDrv: register for sleep/wakeup events failed\n"));
303
304 /* Find kernel symbols that are kind of optional. */
305 vboxdrvDarwinResolveSymbols();
306 return KMOD_RETURN_SUCCESS;
307 }
308
309 LogRel(("VBoxDrv: devfs_make_node(makedev(%d,1),,,,%s) failed\n", g_iMajorDeviceNo, DEVICE_NAME_USR));
310 devfs_remove(g_hDevFsDeviceSys);
311 g_hDevFsDeviceSys = NULL;
312 }
313 else
314 LogRel(("VBoxDrv: devfs_make_node(makedev(%d,0),,,,%s) failed\n", g_iMajorDeviceNo, DEVICE_NAME_SYS));
315
316 cdevsw_remove(g_iMajorDeviceNo, &g_DevCW);
317 g_iMajorDeviceNo = -1;
318 }
319 else
320 LogRel(("VBoxDrv: cdevsw_add failed (%d)\n", g_iMajorDeviceNo));
321 RTSpinlockDestroy(g_Spinlock);
322 g_Spinlock = NIL_RTSPINLOCK;
323 }
324 else
325 LogRel(("VBoxDrv: RTSpinlockCreate failed (rc=%d)\n", rc));
326 supdrvDeleteDevExt(&g_DevExt);
327 }
328 else
329 printf("VBoxDrv: failed to initialize device extension (rc=%d)\n", rc);
330 RTR0TermForced();
331 }
332 else
333 printf("VBoxDrv: failed to initialize IPRT (rc=%d)\n", rc);
334
335 memset(&g_DevExt, 0, sizeof(g_DevExt));
336 return KMOD_RETURN_FAILURE;
337}
338
339
340/**
341 * Resolves kernel symbols we want (but may do without).
342 */
343static void vboxdrvDarwinResolveSymbols(void)
344{
345 RTDBGKRNLINFO hKrnlInfo;
346 int rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0);
347 if (RT_SUCCESS(rc))
348 {
349 /* The VMX stuff. */
350 int rc1 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_resume", (void **)&g_pfnVmxResume);
351 int rc2 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_suspend", (void **)&g_pfnVmxSuspend);
352 int rc3 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_use_count", (void **)&g_pVmxUseCount);
353 if (RT_SUCCESS(rc1) && RT_SUCCESS(rc2) && RT_SUCCESS(rc3))
354 {
355 LogRel(("VBoxDrv: vmx_resume=%p vmx_suspend=%p vmx_use_count=%p (%d) cr4=%#x\n",
356 g_pfnVmxResume, g_pfnVmxSuspend, g_pVmxUseCount, *g_pVmxUseCount, ASMGetCR4() ));
357 }
358 else
359 {
360 LogRel(("VBoxDrv: failed to resolve vmx stuff: vmx_resume=%Rrc vmx_suspend=%Rrc vmx_use_count=%Rrc", rc1, rc2, rc3));
361 g_pfnVmxResume = NULL;
362 g_pfnVmxSuspend = NULL;
363 g_pVmxUseCount = NULL;
364 }
365
366#ifdef SUPDRV_WITH_MSR_PROBER
367 /* MSR prober stuff. */
368 int rc = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "rdmsr_carefully", (void **)&g_pfnRdMsrCarefully);
369 if (RT_FAILURE(rc))
370 g_pfnRdMsrCarefully = NULL;
371 rc = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "rdmsr64_carefully", (void **)&g_pfnRdMsr64Carefully);
372 if (RT_FAILURE(rc))
373 g_pfnRdMsr64Carefully = NULL;
374# ifdef RT_ARCH_AMD64 /* Missing 64 in name, so if implemented on 32-bit it could have different signature. */
375 rc = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "wrmsr_carefully", (void **)&g_pfnWrMsr64Carefully);
376 if (RT_FAILURE(rc))
377# endif
378 g_pfnWrMsr64Carefully = NULL;
379
380 LogRel(("VBoxDrv: g_pfnRdMsrCarefully=%p g_pfnRdMsr64Carefully=%p g_pfnWrMsr64Carefully=%p\n",
381 g_pfnRdMsrCarefully, g_pfnRdMsr64Carefully, g_pfnWrMsr64Carefully));
382
383#endif /* SUPDRV_WITH_MSR_PROBER */
384
385 RTR0DbgKrnlInfoRelease(hKrnlInfo);
386 }
387 else
388 LogRel(("VBoxDrv: Failed to open kernel symbols, rc=%Rrc\n", rc));
389}
390
391
392/**
393 * Stop the kernel module.
394 */
395static kern_return_t VBoxDrvDarwinStop(struct kmod_info *pKModInfo, void *pvData)
396{
397 int rc;
398 LogFlow(("VBoxDrvDarwinStop\n"));
399
400 /** @todo I've got a nagging feeling that we'll have to keep track of users and refuse
401 * unloading if we're busy. Investigate and implement this! */
402
403 /*
404 * Undo the work done during start (in reverse order).
405 */
406 if (g_pSleepNotifier)
407 {
408 g_pSleepNotifier->remove();
409 g_pSleepNotifier = NULL;
410 }
411
412 devfs_remove(g_hDevFsDeviceUsr);
413 g_hDevFsDeviceUsr = NULL;
414
415 devfs_remove(g_hDevFsDeviceSys);
416 g_hDevFsDeviceSys = NULL;
417
418 rc = cdevsw_remove(g_iMajorDeviceNo, &g_DevCW);
419 Assert(rc == g_iMajorDeviceNo);
420 g_iMajorDeviceNo = -1;
421
422 supdrvDeleteDevExt(&g_DevExt);
423
424 rc = RTSpinlockDestroy(g_Spinlock);
425 AssertRC(rc);
426 g_Spinlock = NIL_RTSPINLOCK;
427
428 RTR0TermForced();
429
430 memset(&g_DevExt, 0, sizeof(g_DevExt));
431#ifdef DEBUG
432 printf("VBoxDrvDarwinStop - done\n");
433#endif
434 return KMOD_RETURN_SUCCESS;
435}
436
437
438/**
439 * Device open. Called on open /dev/vboxdrv
440 *
441 * @param Dev The device number.
442 * @param fFlags ???.
443 * @param fDevType ???.
444 * @param pProcess The process issuing this request.
445 */
446static int VBoxDrvDarwinOpen(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess)
447{
448#ifdef DEBUG_DARWIN_GIP
449 char szName[128];
450 szName[0] = '\0';
451 proc_name(proc_pid(pProcess), szName, sizeof(szName));
452 Log(("VBoxDrvDarwinOpen: pid=%d '%s'\n", proc_pid(pProcess), szName));
453#endif
454
455 /*
456 * Only two minor devices numbers are allowed.
457 */
458 if (minor(Dev) != 0 && minor(Dev) != 1)
459 return EACCES;
460
461 /*
462 * The process issuing the request must be the current process.
463 */
464 RTPROCESS Process = RTProcSelf();
465 if (Process != proc_pid(pProcess))
466 return EIO;
467
468 /*
469 * Find the session created by org_virtualbox_SupDrvClient, fail
470 * if no such session, and mark it as opened. We set the uid & gid
471 * here too, since that is more straight forward at this point.
472 */
473 const bool fUnrestricted = minor(Dev) == 0;
474 int rc = VINF_SUCCESS;
475 PSUPDRVSESSION pSession = NULL;
476 kauth_cred_t pCred = kauth_cred_proc_ref(pProcess);
477 if (pCred)
478 {
479#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
480 RTUID Uid = kauth_cred_getruid(pCred);
481 RTGID Gid = kauth_cred_getrgid(pCred);
482#else
483 RTUID Uid = pCred->cr_ruid;
484 RTGID Gid = pCred->cr_rgid;
485#endif
486 unsigned iHash = SESSION_HASH(Process);
487 RTSpinlockAcquire(g_Spinlock);
488
489 pSession = g_apSessionHashTab[iHash];
490 while (pSession && pSession->Process != Process)
491 pSession = pSession->pNextHash;
492 if (pSession)
493 {
494 if (!pSession->fOpened)
495 {
496 pSession->fOpened = true;
497 pSession->fUnrestricted = fUnrestricted;
498 pSession->Uid = Uid;
499 pSession->Gid = Gid;
500 }
501 else
502 rc = VERR_ALREADY_LOADED;
503 }
504 else
505 rc = VERR_GENERAL_FAILURE;
506
507 RTSpinlockRelease(g_Spinlock);
508#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
509 kauth_cred_unref(&pCred);
510#else /* 10.4 */
511 /* The 10.4u SDK headers and 10.4.11 kernel source have inconsistent definitions
512 of kauth_cred_unref(), so use the other (now deprecated) API for releasing it. */
513 kauth_cred_rele(pCred);
514#endif /* 10.4 */
515 }
516 else
517 rc = VERR_INVALID_PARAMETER;
518
519#ifdef DEBUG_DARWIN_GIP
520 OSDBGPRINT(("VBoxDrvDarwinOpen: pid=%d '%s' pSession=%p rc=%d\n", proc_pid(pProcess), szName, pSession, rc));
521#else
522 Log(("VBoxDrvDarwinOpen: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, proc_pid(pProcess)));
523#endif
524 return VBoxDrvDarwinErr2DarwinErr(rc);
525}
526
527
528/**
529 * Close device.
530 */
531static int VBoxDrvDarwinClose(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess)
532{
533 Log(("VBoxDrvDarwinClose: pid=%d\n", (int)RTProcSelf()));
534 Assert(proc_pid(pProcess) == (int)RTProcSelf());
535
536 /*
537 * Hand the session closing to org_virtualbox_SupDrvClient.
538 */
539 org_virtualbox_SupDrvClient::sessionClose(RTProcSelf());
540 return 0;
541}
542
543
544/**
545 * Device I/O Control entry point.
546 *
547 * @returns Darwin for slow IOCtls and VBox status code for the fast ones.
548 * @param Dev The device number (major+minor).
549 * @param iCmd The IOCtl command.
550 * @param pData Pointer to the data (if any it's a SUPDRVIOCTLDATA (kernel copy)).
551 * @param fFlags Flag saying we're a character device (like we didn't know already).
552 * @param pProcess The process issuing this request.
553 */
554static int VBoxDrvDarwinIOCtl(dev_t Dev, u_long iCmd, caddr_t pData, int fFlags, struct proc *pProcess)
555{
556 const bool fUnrestricted = minor(Dev) == 0;
557 const RTPROCESS Process = proc_pid(pProcess);
558 const unsigned iHash = SESSION_HASH(Process);
559 PSUPDRVSESSION pSession;
560
561 /*
562 * Find the session.
563 */
564 RTSpinlockAcquire(g_Spinlock);
565
566 pSession = g_apSessionHashTab[iHash];
567 while (pSession && (pSession->Process != Process || pSession->fUnrestricted != fUnrestricted || !pSession->fOpened))
568 pSession = pSession->pNextHash;
569
570 if (RT_LIKELY(pSession))
571 supdrvSessionRetain(pSession);
572
573 RTSpinlockRelease(g_Spinlock);
574 if (RT_UNLIKELY(!pSession))
575 {
576 OSDBGPRINT(("VBoxDrvDarwinIOCtl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d iCmd=%#lx\n",
577 (int)Process, iCmd));
578 return EINVAL;
579 }
580
581 /*
582 * Deal with the two high-speed IOCtl that takes it's arguments from
583 * the session and iCmd, and only returns a VBox status code.
584 */
585 int rc;
586 if ( ( iCmd == SUP_IOCTL_FAST_DO_RAW_RUN
587 || iCmd == SUP_IOCTL_FAST_DO_HM_RUN
588 || iCmd == SUP_IOCTL_FAST_DO_NOP)
589 && fUnrestricted)
590 rc = supdrvIOCtlFast(iCmd, *(uint32_t *)pData, &g_DevExt, pSession);
591 else
592 rc = VBoxDrvDarwinIOCtlSlow(pSession, iCmd, pData, pProcess);
593
594 supdrvSessionRelease(pSession);
595 return rc;
596}
597
598
599/**
600 * Worker for VBoxDrvDarwinIOCtl that takes the slow IOCtl functions.
601 *
602 * @returns Darwin errno.
603 *
604 * @param pSession The session.
605 * @param iCmd The IOCtl command.
606 * @param pData Pointer to the kernel copy of the SUPDRVIOCTLDATA buffer.
607 * @param pProcess The calling process.
608 */
609static int VBoxDrvDarwinIOCtlSlow(PSUPDRVSESSION pSession, u_long iCmd, caddr_t pData, struct proc *pProcess)
610{
611 LogFlow(("VBoxDrvDarwinIOCtlSlow: pSession=%p iCmd=%p pData=%p pProcess=%p\n", pSession, iCmd, pData, pProcess));
612
613
614 /*
615 * Buffered or unbuffered?
616 */
617 PSUPREQHDR pHdr;
618 user_addr_t pUser = 0;
619 void *pvPageBuf = NULL;
620 uint32_t cbReq = IOCPARM_LEN(iCmd);
621 if ((IOC_DIRMASK & iCmd) == IOC_INOUT)
622 {
623 pHdr = (PSUPREQHDR)pData;
624 if (RT_UNLIKELY(cbReq < sizeof(*pHdr)))
625 {
626 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: cbReq=%#x < %#x; iCmd=%#lx\n", cbReq, (int)sizeof(*pHdr), iCmd));
627 return EINVAL;
628 }
629 if (RT_UNLIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
630 {
631 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: bad magic fFlags=%#x; iCmd=%#lx\n", pHdr->fFlags, iCmd));
632 return EINVAL;
633 }
634 if (RT_UNLIKELY( RT_MAX(pHdr->cbIn, pHdr->cbOut) != cbReq
635 || pHdr->cbIn < sizeof(*pHdr)
636 || pHdr->cbOut < sizeof(*pHdr)))
637 {
638 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: max(%#x,%#x) != %#x; iCmd=%#lx\n", pHdr->cbIn, pHdr->cbOut, cbReq, iCmd));
639 return EINVAL;
640 }
641 }
642 else if ((IOC_DIRMASK & iCmd) == IOC_VOID && !cbReq)
643 {
644 /*
645 * Get the header and figure out how much we're gonna have to read.
646 */
647 SUPREQHDR Hdr;
648 pUser = (user_addr_t)*(void **)pData;
649 int rc = copyin(pUser, &Hdr, sizeof(Hdr));
650 if (RT_UNLIKELY(rc))
651 {
652 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyin(%llx,Hdr,) -> %#x; iCmd=%#lx\n", (unsigned long long)pUser, rc, iCmd));
653 return rc;
654 }
655 if (RT_UNLIKELY((Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
656 {
657 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: bad magic fFlags=%#x; iCmd=%#lx\n", Hdr.fFlags, iCmd));
658 return EINVAL;
659 }
660 cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
661 if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr)
662 || Hdr.cbOut < sizeof(Hdr)
663 || cbReq > _1M*16))
664 {
665 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: max(%#x,%#x); iCmd=%#lx\n", Hdr.cbIn, Hdr.cbOut, iCmd));
666 return EINVAL;
667 }
668
669 /*
670 * Allocate buffer and copy in the data.
671 */
672 pHdr = (PSUPREQHDR)RTMemTmpAlloc(cbReq);
673 if (!pHdr)
674 pvPageBuf = pHdr = (PSUPREQHDR)IOMallocAligned(RT_ALIGN_Z(cbReq, PAGE_SIZE), 8);
675 if (RT_UNLIKELY(!pHdr))
676 {
677 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: failed to allocate buffer of %d bytes; iCmd=%#lx\n", cbReq, iCmd));
678 return ENOMEM;
679 }
680 rc = copyin(pUser, pHdr, Hdr.cbIn);
681 if (RT_UNLIKELY(rc))
682 {
683 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyin(%llx,%p,%#x) -> %#x; iCmd=%#lx\n",
684 (unsigned long long)pUser, pHdr, Hdr.cbIn, rc, iCmd));
685 if (pvPageBuf)
686 IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
687 else
688 RTMemTmpFree(pHdr);
689 return rc;
690 }
691 if (Hdr.cbIn < cbReq)
692 RT_BZERO((uint8_t *)pHdr + Hdr.cbIn, cbReq - Hdr.cbIn);
693 }
694 else
695 {
696 Log(("VBoxDrvDarwinIOCtlSlow: huh? cbReq=%#x iCmd=%#lx\n", cbReq, iCmd));
697 return EINVAL;
698 }
699
700 /*
701 * Process the IOCtl.
702 */
703 int rc = supdrvIOCtl(iCmd, &g_DevExt, pSession, pHdr, cbReq);
704 if (RT_LIKELY(!rc))
705 {
706 /*
707 * If not buffered, copy back the buffer before returning.
708 */
709 if (pUser)
710 {
711 uint32_t cbOut = pHdr->cbOut;
712 if (cbOut > cbReq)
713 {
714 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: too much output! %#x > %#x; uCmd=%#lx!\n", cbOut, cbReq, iCmd));
715 cbOut = cbReq;
716 }
717 rc = copyout(pHdr, pUser, cbOut);
718 if (RT_UNLIKELY(rc))
719 OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyout(%p,%llx,%#x) -> %d; uCmd=%#lx!\n",
720 pHdr, (unsigned long long)pUser, cbOut, rc, iCmd));
721
722 /* cleanup */
723 if (pvPageBuf)
724 IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
725 else
726 RTMemTmpFree(pHdr);
727 }
728 }
729 else
730 {
731 /*
732 * The request failed, just clean up.
733 */
734 if (pUser)
735 {
736 if (pvPageBuf)
737 IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
738 else
739 RTMemTmpFree(pHdr);
740 }
741
742 Log(("VBoxDrvDarwinIOCtlSlow: pid=%d iCmd=%lx pData=%p failed, rc=%d\n", proc_pid(pProcess), iCmd, (void *)pData, rc));
743 rc = EINVAL;
744 }
745
746 Log2(("VBoxDrvDarwinIOCtlSlow: returns %d\n", rc));
747 return rc;
748}
749
750
751/**
752 * The SUPDRV IDC entry point.
753 *
754 * @returns VBox status code, see supdrvIDC.
755 * @param iReq The request code.
756 * @param pReq The request.
757 */
758DECLEXPORT(int) VBOXCALL SUPDrvDarwinIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
759{
760 PSUPDRVSESSION pSession;
761
762 /*
763 * Some quick validations.
764 */
765 if (RT_UNLIKELY(!VALID_PTR(pReq)))
766 return VERR_INVALID_POINTER;
767
768 pSession = pReq->pSession;
769 if (pSession)
770 {
771 if (RT_UNLIKELY(!VALID_PTR(pSession)))
772 return VERR_INVALID_PARAMETER;
773 if (RT_UNLIKELY(pSession->pDevExt != &g_DevExt))
774 return VERR_INVALID_PARAMETER;
775 }
776 else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
777 return VERR_INVALID_PARAMETER;
778
779 /*
780 * Do the job.
781 */
782 return supdrvIDC(uReq, &g_DevExt, pSession, pReq);
783}
784
785
786void VBOXCALL supdrvOSCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
787{
788 NOREF(pDevExt);
789 NOREF(pSession);
790}
791
792
793void VBOXCALL supdrvOSSessionHashTabInserted(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
794{
795 NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
796}
797
798
799void VBOXCALL supdrvOSSessionHashTabRemoved(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
800{
801 NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
802}
803
804
805/**
806 * Initializes any OS specific object creator fields.
807 */
808void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
809{
810 NOREF(pObj);
811 NOREF(pSession);
812}
813
814
815/**
816 * Checks if the session can access the object.
817 *
818 * @returns true if a decision has been made.
819 * @returns false if the default access policy should be applied.
820 *
821 * @param pObj The object in question.
822 * @param pSession The session wanting to access the object.
823 * @param pszObjName The object name, can be NULL.
824 * @param prc Where to store the result when returning true.
825 */
826bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
827{
828 NOREF(pObj);
829 NOREF(pSession);
830 NOREF(pszObjName);
831 NOREF(prc);
832 return false;
833}
834
835/**
836 * Callback for blah blah blah.
837 */
838IOReturn VBoxDrvDarwinSleepHandler(void * /* pvTarget */, void *pvRefCon, UInt32 uMessageType, IOService * /* pProvider */, void * /* pvMessageArgument */, vm_size_t /* argSize */)
839{
840 LogFlow(("VBoxDrv: Got sleep/wake notice. Message type was %X\n", (uint)uMessageType));
841
842 if (uMessageType == kIOMessageSystemWillSleep)
843 RTPowerSignalEvent(RTPOWEREVENT_SUSPEND);
844 else if (uMessageType == kIOMessageSystemHasPoweredOn)
845 RTPowerSignalEvent(RTPOWEREVENT_RESUME);
846
847 acknowledgeSleepWakeNotification(pvRefCon);
848
849 return 0;
850}
851
852
853/**
854 * @copydoc SUPR0EnableVTx
855 */
856int VBOXCALL supdrvOSEnableVTx(bool fEnable)
857{
858#ifdef VBOX_WITH_HOST_VMX
859 int rc;
860 if ( version_major >= 10 /* 10 = 10.6.x = Snow Leopard */
861 && g_pfnVmxSuspend
862 && g_pfnVmxResume
863 && g_pVmxUseCount)
864 {
865 if (fEnable)
866 {
867 rc = host_vmxon(false /* exclusive */);
868 if (rc == VMX_OK)
869 rc = VINF_SUCCESS;
870 else if (rc == VMX_UNSUPPORTED)
871 rc = VERR_VMX_NO_VMX;
872 else if (rc == VMX_INUSE)
873 rc = VERR_VMX_IN_VMX_ROOT_MODE;
874 else /* shouldn't happen, but just in case. */
875 {
876 LogRel(("host_vmxon returned %d\n", rc));
877 rc = VERR_UNRESOLVED_ERROR;
878 }
879 LogRel(("VBoxDrv: host_vmxon -> vmx_use_count=%d rc=%Rrc\n", *g_pVmxUseCount, rc));
880 }
881 else
882 {
883 host_vmxoff();
884 rc = VINF_SUCCESS;
885 LogRel(("VBoxDrv: host_vmxoff -> vmx_use_count=%d\n", *g_pVmxUseCount));
886 }
887 }
888 else
889 {
890 /* In 10.5.x the host_vmxon is severely broken! Don't use it, it will
891 frequnetly panic the host. */
892 rc = VERR_NOT_SUPPORTED;
893 }
894 return rc;
895#else
896 return VERR_NOT_SUPPORTED;
897#endif
898}
899
900
901/**
902 * @copydoc SUPR0SuspendVTxOnCpu
903 */
904bool VBOXCALL supdrvOSSuspendVTxOnCpu(void)
905{
906#ifdef VBOX_WITH_HOST_VMX
907 /*
908 * Consult the VMX usage counter, don't try suspend if not enabled.
909 *
910 * Note! The host_vmxon/off code is still race prone since, but this is
911 * currently the best we can do without always enable VMX when
912 * loading the driver.
913 */
914 if ( g_pVmxUseCount
915 && *g_pVmxUseCount > 0)
916 {
917 g_pfnVmxSuspend();
918 return true;
919 }
920 return false;
921#else
922 return false;
923#endif
924}
925
926
927/**
928 * @copydoc SUPR0ResumeVTxOnCpu
929 */
930void VBOXCALL supdrvOSResumeVTxOnCpu(bool fSuspended)
931{
932#ifdef VBOX_WITH_HOST_VMX
933 /*
934 * Don't consult the counter here, the state knows better.
935 * We're executing with interrupts disabled and anyone racing us with
936 * disabling VT-x will be waiting in the rendezvous code.
937 */
938 if ( fSuspended
939 && g_pfnVmxResume)
940 g_pfnVmxResume();
941 else
942 Assert(!fSuspended);
943#else
944 Assert(!fSuspended);
945#endif
946}
947
948
949bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
950{
951 NOREF(pDevExt);
952 return false;
953}
954
955
956bool VBOXCALL supdrvOSAreCpusOfflinedOnSuspend(void)
957{
958 /** @todo verify this. */
959 return false;
960}
961
962
963bool VBOXCALL supdrvOSAreTscDeltasInSync(void)
964{
965 return false;
966}
967
968void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
969{
970#if 1
971 NOREF(pDevExt); NOREF(pImage);
972#else
973 /*
974 * Try store the image load address in NVRAM so we can retrived it on panic.
975 * Note! This only works if you're root! - Acutally, it doesn't work at all at the moment. FIXME!
976 */
977 IORegistryEntry *pEntry = IORegistryEntry::fromPath("/options", gIODTPlane);
978 if (pEntry)
979 {
980 char szVar[80];
981 RTStrPrintf(szVar, sizeof(szVar), "vboximage"/*-%s*/, pImage->szName);
982 char szValue[48];
983 RTStrPrintf(szValue, sizeof(szValue), "%#llx,%#llx", (uint64_t)(uintptr_t)pImage->pvImage,
984 (uint64_t)(uintptr_t)pImage->pvImage + pImage->cbImageBits - 1);
985 bool fRc = pEntry->setProperty(szVar, szValue); NOREF(fRc);
986 pEntry->release();
987 SUPR0Printf("fRc=%d '%s'='%s'\n", fRc, szVar, szValue);
988 }
989 /*else
990 SUPR0Printf("failed to find /options in gIODTPlane\n");*/
991#endif
992}
993
994
995int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
996{
997 NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
998 return VERR_NOT_SUPPORTED;
999}
1000
1001
1002int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv, const uint8_t *pbImageBits)
1003{
1004 NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
1005 return VERR_NOT_SUPPORTED;
1006}
1007
1008
1009int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
1010{
1011 NOREF(pDevExt); NOREF(pImage); NOREF(pbImageBits); NOREF(pReq);
1012 return VERR_NOT_SUPPORTED;
1013}
1014
1015
1016void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
1017{
1018 NOREF(pDevExt); NOREF(pImage);
1019}
1020
1021
1022#ifdef SUPDRV_WITH_MSR_PROBER
1023
1024typedef struct SUPDRVDARWINMSRARGS
1025{
1026 RTUINT64U uValue;
1027 uint32_t uMsr;
1028 int rc;
1029} SUPDRVDARWINMSRARGS, *PSUPDRVDARWINMSRARGS;
1030
1031/**
1032 * On CPU worker for supdrvOSMsrProberRead.
1033 *
1034 * @param idCpu Ignored.
1035 * @param pvUser1 Pointer to a SUPDRVDARWINMSRARGS.
1036 * @param pvUser2 Ignored.
1037 */
1038static DECLCALLBACK(void) supdrvDarwinMsrProberReadOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
1039{
1040 PSUPDRVDARWINMSRARGS pArgs = (PSUPDRVDARWINMSRARGS)pvUser1;
1041 if (g_pfnRdMsr64Carefully)
1042 pArgs->rc = g_pfnRdMsr64Carefully(pArgs->uMsr, &pArgs->uValue.u);
1043 else if (g_pfnRdMsrCarefully)
1044 pArgs->rc = g_pfnRdMsrCarefully(pArgs->uMsr, &pArgs->uValue.s.Lo, &pArgs->uValue.s.Hi);
1045 else
1046 pArgs->rc = 2;
1047 NOREF(idCpu); NOREF(pvUser2);
1048}
1049
1050
1051int VBOXCALL supdrvOSMsrProberRead(uint32_t uMsr, RTCPUID idCpu, uint64_t *puValue)
1052{
1053 if (!g_pfnRdMsr64Carefully && !g_pfnRdMsrCarefully)
1054 return VERR_NOT_SUPPORTED;
1055
1056 SUPDRVDARWINMSRARGS Args;
1057 Args.uMsr = uMsr;
1058 Args.uValue.u = 0;
1059 Args.rc = -1;
1060
1061 if (idCpu == NIL_RTCPUID)
1062 supdrvDarwinMsrProberReadOnCpu(idCpu, &Args, NULL);
1063 else
1064 {
1065 int rc = RTMpOnSpecific(idCpu, supdrvDarwinMsrProberReadOnCpu, &Args, NULL);
1066 if (RT_FAILURE(rc))
1067 return rc;
1068 }
1069
1070 if (Args.rc)
1071 return VERR_ACCESS_DENIED;
1072 *puValue = Args.uValue.u;
1073 return VINF_SUCCESS;
1074}
1075
1076
1077/**
1078 * On CPU worker for supdrvOSMsrProberWrite.
1079 *
1080 * @param idCpu Ignored.
1081 * @param pvUser1 Pointer to a SUPDRVDARWINMSRARGS.
1082 * @param pvUser2 Ignored.
1083 */
1084static DECLCALLBACK(void) supdrvDarwinMsrProberWriteOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
1085{
1086 PSUPDRVDARWINMSRARGS pArgs = (PSUPDRVDARWINMSRARGS)pvUser1;
1087 if (g_pfnWrMsr64Carefully)
1088 pArgs->rc = g_pfnWrMsr64Carefully(pArgs->uMsr, pArgs->uValue.u);
1089 else
1090 pArgs->rc = 2;
1091 NOREF(idCpu); NOREF(pvUser2);
1092}
1093
1094
1095int VBOXCALL supdrvOSMsrProberWrite(uint32_t uMsr, RTCPUID idCpu, uint64_t uValue)
1096{
1097 if (!g_pfnWrMsr64Carefully)
1098 return VERR_NOT_SUPPORTED;
1099
1100 SUPDRVDARWINMSRARGS Args;
1101 Args.uMsr = uMsr;
1102 Args.uValue.u = uValue;
1103 Args.rc = -1;
1104
1105 if (idCpu == NIL_RTCPUID)
1106 supdrvDarwinMsrProberWriteOnCpu(idCpu, &Args, NULL);
1107 else
1108 {
1109 int rc = RTMpOnSpecific(idCpu, supdrvDarwinMsrProberWriteOnCpu, &Args, NULL);
1110 if (RT_FAILURE(rc))
1111 return rc;
1112 }
1113
1114 if (Args.rc)
1115 return VERR_ACCESS_DENIED;
1116 return VINF_SUCCESS;
1117}
1118
1119
1120/**
1121 * Worker for supdrvOSMsrProberModify.
1122 */
1123static DECLCALLBACK(void) supdrvDarwinMsrProberModifyOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
1124{
1125 PSUPMSRPROBER pReq = (PSUPMSRPROBER)pvUser1;
1126 register uint32_t uMsr = pReq->u.In.uMsr;
1127 bool const fFaster = pReq->u.In.enmOp == SUPMSRPROBEROP_MODIFY_FASTER;
1128 uint64_t uBefore;
1129 uint64_t uWritten;
1130 uint64_t uAfter;
1131 int rcBefore, rcWrite, rcAfter, rcRestore;
1132 RTCCUINTREG fOldFlags;
1133
1134 /* Initialize result variables. */
1135 uBefore = uWritten = uAfter = 0;
1136 rcWrite = rcAfter = rcRestore = -1;
1137
1138 /*
1139 * Do the job.
1140 */
1141 fOldFlags = ASMIntDisableFlags();
1142 ASMCompilerBarrier(); /* paranoia */
1143 if (!fFaster)
1144 ASMWriteBackAndInvalidateCaches();
1145
1146 rcBefore = g_pfnRdMsr64Carefully(uMsr, &uBefore);
1147 if (rcBefore >= 0)
1148 {
1149 register uint64_t uRestore = uBefore;
1150 uWritten = uRestore;
1151 uWritten &= pReq->u.In.uArgs.Modify.fAndMask;
1152 uWritten |= pReq->u.In.uArgs.Modify.fOrMask;
1153
1154 rcWrite = g_pfnWrMsr64Carefully(uMsr, uWritten);
1155 rcAfter = g_pfnRdMsr64Carefully(uMsr, &uAfter);
1156 rcRestore = g_pfnWrMsr64Carefully(uMsr, uRestore);
1157
1158 if (!fFaster)
1159 {
1160 ASMWriteBackAndInvalidateCaches();
1161 ASMReloadCR3();
1162 ASMNopPause();
1163 }
1164 }
1165
1166 ASMCompilerBarrier(); /* paranoia */
1167 ASMSetFlags(fOldFlags);
1168
1169 /*
1170 * Write out the results.
1171 */
1172 pReq->u.Out.uResults.Modify.uBefore = uBefore;
1173 pReq->u.Out.uResults.Modify.uWritten = uWritten;
1174 pReq->u.Out.uResults.Modify.uAfter = uAfter;
1175 pReq->u.Out.uResults.Modify.fBeforeGp = rcBefore != 0;
1176 pReq->u.Out.uResults.Modify.fModifyGp = rcWrite != 0;
1177 pReq->u.Out.uResults.Modify.fAfterGp = rcAfter != 0;
1178 pReq->u.Out.uResults.Modify.fRestoreGp = rcRestore != 0;
1179 RT_ZERO(pReq->u.Out.uResults.Modify.afReserved);
1180}
1181
1182
1183int VBOXCALL supdrvOSMsrProberModify(RTCPUID idCpu, PSUPMSRPROBER pReq)
1184{
1185 if (!g_pfnWrMsr64Carefully || !g_pfnRdMsr64Carefully)
1186 return VERR_NOT_SUPPORTED;
1187 if (idCpu == NIL_RTCPUID)
1188 {
1189 supdrvDarwinMsrProberModifyOnCpu(idCpu, pReq, NULL);
1190 return VINF_SUCCESS;
1191 }
1192 return RTMpOnSpecific(idCpu, supdrvDarwinMsrProberModifyOnCpu, pReq, NULL);
1193}
1194
1195#endif /* SUPDRV_WITH_MSR_PROBER */
1196
1197/**
1198 * Resume Bluetooth keyboard.
1199 * If there is no Bluetooth keyboard device connected to the system we just ignore this.
1200 */
1201static void supdrvDarwinResumeBluetoothKbd(void)
1202{
1203 OSDictionary *pDictionary = IOService::serviceMatching("AppleBluetoothHIDKeyboard");
1204 if (pDictionary)
1205 {
1206 OSIterator *pIter;
1207 IOBluetoothHIDDriver *pDriver;
1208
1209 pIter = IOService::getMatchingServices(pDictionary);
1210 if (pIter)
1211 {
1212 while ((pDriver = (IOBluetoothHIDDriver *)pIter->getNextObject()))
1213 if (pDriver->isKeyboard())
1214 (void)pDriver->hidControl(IOBTHID_CONTROL_EXIT_SUSPEND);
1215
1216 pIter->release();
1217 }
1218 pDictionary->release();
1219 }
1220}
1221
1222/**
1223 * Resume built-in keyboard on MacBook Air and Pro hosts.
1224 * If there is no built-in keyboard device attached to the system we just ignore this.
1225 */
1226static void supdrvDarwinResumeBuiltinKbd(void)
1227{
1228 /*
1229 * AppleUSBTCKeyboard KEXT is responsible for built-in keyboard management.
1230 * We resume keyboard by accessing to its IOService. */
1231 OSDictionary *pDictionary = IOService::serviceMatching("AppleUSBTCKeyboard");
1232 if (pDictionary)
1233 {
1234 OSIterator *pIter;
1235 IOUSBHIDDriver *pDriver;
1236
1237 pIter = IOService::getMatchingServices(pDictionary);
1238 if (pIter)
1239 {
1240 while ((pDriver = (IOUSBHIDDriver *)pIter->getNextObject()))
1241 if (pDriver->IsPortSuspended())
1242 pDriver->SuspendPort(false, 0);
1243
1244 pIter->release();
1245 }
1246 pDictionary->release();
1247 }
1248}
1249
1250
1251/**
1252 * Resume suspended keyboard devices (if any).
1253 */
1254int VBOXCALL supdrvDarwinResumeSuspendedKbds(void)
1255{
1256 supdrvDarwinResumeBuiltinKbd();
1257 supdrvDarwinResumeBluetoothKbd();
1258
1259 return 0;
1260}
1261
1262
1263/**
1264 * Converts an IPRT error code to a darwin error code.
1265 *
1266 * @returns corresponding darwin error code.
1267 * @param rc IPRT status code.
1268 */
1269static int VBoxDrvDarwinErr2DarwinErr(int rc)
1270{
1271 switch (rc)
1272 {
1273 case VINF_SUCCESS: return 0;
1274 case VERR_GENERAL_FAILURE: return EACCES;
1275 case VERR_INVALID_PARAMETER: return EINVAL;
1276 case VERR_INVALID_MAGIC: return EILSEQ;
1277 case VERR_INVALID_HANDLE: return ENXIO;
1278 case VERR_INVALID_POINTER: return EFAULT;
1279 case VERR_LOCK_FAILED: return ENOLCK;
1280 case VERR_ALREADY_LOADED: return EEXIST;
1281 case VERR_PERMISSION_DENIED: return EPERM;
1282 case VERR_VERSION_MISMATCH: return ENOSYS;
1283 }
1284
1285 return EPERM;
1286}
1287
1288
1289RTDECL(int) SUPR0Printf(const char *pszFormat, ...)
1290{
1291 va_list va;
1292 char szMsg[512];
1293
1294 va_start(va, pszFormat);
1295 RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, va);
1296 va_end(va);
1297 szMsg[sizeof(szMsg) - 1] = '\0';
1298
1299 printf("%s", szMsg);
1300 return 0;
1301}
1302
1303
1304/**
1305 * Returns configuration flags of the host kernel.
1306 */
1307SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void)
1308{
1309 return 0;
1310}
1311
1312
1313/*
1314 *
1315 * org_virtualbox_SupDrv
1316 *
1317 */
1318
1319
1320/**
1321 * Initialize the object.
1322 */
1323bool org_virtualbox_SupDrv::init(OSDictionary *pDictionary)
1324{
1325 LogFlow(("org_virtualbox_SupDrv::init([%p], %p)\n", this, pDictionary));
1326 if (IOService::init(pDictionary))
1327 {
1328 /* init members. */
1329 return true;
1330 }
1331 return false;
1332}
1333
1334
1335/**
1336 * Free the object.
1337 */
1338void org_virtualbox_SupDrv::free(void)
1339{
1340 LogFlow(("IOService::free([%p])\n", this));
1341 IOService::free();
1342}
1343
1344
1345/**
1346 * Check if it's ok to start this service.
1347 * It's always ok by us, so it's up to IOService to decide really.
1348 */
1349IOService *org_virtualbox_SupDrv::probe(IOService *pProvider, SInt32 *pi32Score)
1350{
1351 LogFlow(("org_virtualbox_SupDrv::probe([%p])\n", this));
1352 return IOService::probe(pProvider, pi32Score);
1353}
1354
1355
1356/**
1357 * Start this service.
1358 */
1359bool org_virtualbox_SupDrv::start(IOService *pProvider)
1360{
1361 LogFlow(("org_virtualbox_SupDrv::start([%p])\n", this));
1362
1363 if (IOService::start(pProvider))
1364 {
1365 /* register the service. */
1366 registerService();
1367 return true;
1368 }
1369 return false;
1370}
1371
1372
1373/**
1374 * Stop this service.
1375 */
1376void org_virtualbox_SupDrv::stop(IOService *pProvider)
1377{
1378 LogFlow(("org_virtualbox_SupDrv::stop([%p], %p)\n", this, pProvider));
1379 IOService::stop(pProvider);
1380}
1381
1382
1383/**
1384 * Termination request.
1385 *
1386 * @return true if we're ok with shutting down now, false if we're not.
1387 * @param fOptions Flags.
1388 */
1389bool org_virtualbox_SupDrv::terminate(IOOptionBits fOptions)
1390{
1391 bool fRc;
1392 LogFlow(("org_virtualbox_SupDrv::terminate: reference_count=%d g_cSessions=%d (fOptions=%#x)\n",
1393 KMOD_INFO_NAME.reference_count, ASMAtomicUoReadS32(&g_cSessions), fOptions));
1394 if ( KMOD_INFO_NAME.reference_count != 0
1395 || ASMAtomicUoReadS32(&g_cSessions))
1396 fRc = false;
1397 else
1398 fRc = IOService::terminate(fOptions);
1399 LogFlow(("org_virtualbox_SupDrv::terminate: returns %d\n", fRc));
1400 return fRc;
1401}
1402
1403
1404/*
1405 *
1406 * org_virtualbox_SupDrvClient
1407 *
1408 */
1409
1410
1411/**
1412 * Initializer called when the client opens the service.
1413 */
1414bool org_virtualbox_SupDrvClient::initWithTask(task_t OwningTask, void *pvSecurityId, UInt32 u32Type)
1415{
1416 LogFlow(("org_virtualbox_SupDrvClient::initWithTask([%p], %#x, %p, %#x) (cur pid=%d proc=%p)\n",
1417 this, OwningTask, pvSecurityId, u32Type, RTProcSelf(), RTR0ProcHandleSelf()));
1418 AssertMsg((RTR0PROCESS)OwningTask == RTR0ProcHandleSelf(), ("%p %p\n", OwningTask, RTR0ProcHandleSelf()));
1419
1420 if (!OwningTask)
1421 return false;
1422
1423 VBOX_RETRIEVE_CUR_PROC_NAME(pszProcName);
1424
1425 if (u32Type != SUP_DARWIN_IOSERVICE_COOKIE)
1426 {
1427 LogRel(("org_virtualbox_SupDrvClient::initWithTask: Bad cookie %#x (%s)\n", u32Type, pszProcName));
1428 return false;
1429 }
1430 else
1431 LogRel(("org_virtualbox_SupDrvClient::initWithTask: Expected cookie %#x (%s)\n", u32Type, pszProcName));
1432
1433 if (IOUserClient::initWithTask(OwningTask, pvSecurityId , u32Type))
1434 {
1435 m_Task = OwningTask;
1436 m_pSession = NULL;
1437 m_pProvider = NULL;
1438 return true;
1439 }
1440 return false;
1441}
1442
1443
1444/**
1445 * Start the client service.
1446 */
1447bool org_virtualbox_SupDrvClient::start(IOService *pProvider)
1448{
1449 LogFlow(("org_virtualbox_SupDrvClient::start([%p], %p) (cur pid=%d proc=%p)\n",
1450 this, pProvider, RTProcSelf(), RTR0ProcHandleSelf() ));
1451 AssertMsgReturn((RTR0PROCESS)m_Task == RTR0ProcHandleSelf(),
1452 ("%p %p\n", m_Task, RTR0ProcHandleSelf()),
1453 false);
1454
1455 if (IOUserClient::start(pProvider))
1456 {
1457 m_pProvider = OSDynamicCast(org_virtualbox_SupDrv, pProvider);
1458 if (m_pProvider)
1459 {
1460 Assert(!m_pSession);
1461
1462 /*
1463 * Create a new session.
1464 */
1465 int rc = supdrvCreateSession(&g_DevExt, true /* fUser */, false /*fUnrestricted*/, &m_pSession);
1466 if (RT_SUCCESS(rc))
1467 {
1468 m_pSession->fOpened = false;
1469 /* The Uid, Gid and fUnrestricted fields are set on open. */
1470
1471 /*
1472 * Insert it into the hash table, checking that there isn't
1473 * already one for this process first. (One session per proc!)
1474 */
1475 unsigned iHash = SESSION_HASH(m_pSession->Process);
1476 RTSpinlockAcquire(g_Spinlock);
1477
1478 PSUPDRVSESSION pCur = g_apSessionHashTab[iHash];
1479 while (pCur && pCur->Process != m_pSession->Process)
1480 pCur = pCur->pNextHash;
1481 if (!pCur)
1482 {
1483 m_pSession->pNextHash = g_apSessionHashTab[iHash];
1484 g_apSessionHashTab[iHash] = m_pSession;
1485 m_pSession->pvSupDrvClient = this;
1486 ASMAtomicIncS32(&g_cSessions);
1487 rc = VINF_SUCCESS;
1488 }
1489 else
1490 rc = VERR_ALREADY_LOADED;
1491
1492 RTSpinlockRelease(g_Spinlock);
1493 if (RT_SUCCESS(rc))
1494 {
1495 Log(("org_virtualbox_SupDrvClient::start: created session %p for pid %d\n", m_pSession, (int)RTProcSelf()));
1496 return true;
1497 }
1498
1499 LogFlow(("org_virtualbox_SupDrvClient::start: already got a session for this process (%p)\n", pCur));
1500 supdrvSessionRelease(m_pSession);
1501 }
1502
1503 m_pSession = NULL;
1504 LogFlow(("org_virtualbox_SupDrvClient::start: rc=%Rrc from supdrvCreateSession\n", rc));
1505 }
1506 else
1507 LogFlow(("org_virtualbox_SupDrvClient::start: %p isn't org_virtualbox_SupDrv\n", pProvider));
1508 }
1509 return false;
1510}
1511
1512
1513/**
1514 * Common worker for clientClose and VBoxDrvDarwinClose.
1515 */
1516/* static */ void org_virtualbox_SupDrvClient::sessionClose(RTPROCESS Process)
1517{
1518 /*
1519 * Find the session and remove it from the hash table.
1520 *
1521 * Note! Only one session per process. (Both start() and
1522 * VBoxDrvDarwinOpen makes sure this is so.)
1523 */
1524 const unsigned iHash = SESSION_HASH(Process);
1525 RTSpinlockAcquire(g_Spinlock);
1526 PSUPDRVSESSION pSession = g_apSessionHashTab[iHash];
1527 if (pSession)
1528 {
1529 if (pSession->Process == Process)
1530 {
1531 g_apSessionHashTab[iHash] = pSession->pNextHash;
1532 pSession->pNextHash = NULL;
1533 ASMAtomicDecS32(&g_cSessions);
1534 }
1535 else
1536 {
1537 PSUPDRVSESSION pPrev = pSession;
1538 pSession = pSession->pNextHash;
1539 while (pSession)
1540 {
1541 if (pSession->Process == Process)
1542 {
1543 pPrev->pNextHash = pSession->pNextHash;
1544 pSession->pNextHash = NULL;
1545 ASMAtomicDecS32(&g_cSessions);
1546 break;
1547 }
1548
1549 /* next */
1550 pPrev = pSession;
1551 pSession = pSession->pNextHash;
1552 }
1553 }
1554 }
1555 RTSpinlockRelease(g_Spinlock);
1556 if (!pSession)
1557 {
1558 Log(("SupDrvClient::sessionClose: pSession == NULL, pid=%d; freed already?\n", (int)Process));
1559 return;
1560 }
1561
1562 /*
1563 * Remove it from the client object.
1564 */
1565 org_virtualbox_SupDrvClient *pThis = (org_virtualbox_SupDrvClient *)pSession->pvSupDrvClient;
1566 pSession->pvSupDrvClient = NULL;
1567 if (pThis)
1568 {
1569 Assert(pThis->m_pSession == pSession);
1570 pThis->m_pSession = NULL;
1571 }
1572
1573 /*
1574 * Close the session.
1575 */
1576 supdrvSessionRelease(pSession);
1577}
1578
1579
1580/**
1581 * Client exits normally.
1582 */
1583IOReturn org_virtualbox_SupDrvClient::clientClose(void)
1584{
1585 LogFlow(("org_virtualbox_SupDrvClient::clientClose([%p]) (cur pid=%d proc=%p)\n", this, RTProcSelf(), RTR0ProcHandleSelf()));
1586 AssertMsg((RTR0PROCESS)m_Task == RTR0ProcHandleSelf(), ("%p %p\n", m_Task, RTR0ProcHandleSelf()));
1587
1588 /*
1589 * Clean up the session if it's still around.
1590 *
1591 * We cannot rely 100% on close, and in the case of a dead client
1592 * we'll end up hanging inside vm_map_remove() if we postpone it.
1593 */
1594 if (m_pSession)
1595 {
1596 sessionClose(RTProcSelf());
1597 Assert(!m_pSession);
1598 }
1599
1600 m_pProvider = NULL;
1601 terminate();
1602
1603 return kIOReturnSuccess;
1604}
1605
1606
1607/**
1608 * The client exits abnormally / forgets to do cleanups. (logging)
1609 */
1610IOReturn org_virtualbox_SupDrvClient::clientDied(void)
1611{
1612 LogFlow(("org_virtualbox_SupDrvClient::clientDied([%p]) m_Task=%p R0Process=%p Process=%d\n",
1613 this, m_Task, RTR0ProcHandleSelf(), RTProcSelf()));
1614
1615 /* IOUserClient::clientDied() calls clientClose, so we'll just do the work there. */
1616 return IOUserClient::clientDied();
1617}
1618
1619
1620/**
1621 * Terminate the service (initiate the destruction). (logging)
1622 */
1623bool org_virtualbox_SupDrvClient::terminate(IOOptionBits fOptions)
1624{
1625 LogFlow(("org_virtualbox_SupDrvClient::terminate([%p], %#x)\n", this, fOptions));
1626 return IOUserClient::terminate(fOptions);
1627}
1628
1629
1630/**
1631 * The final stage of the client service destruction. (logging)
1632 */
1633bool org_virtualbox_SupDrvClient::finalize(IOOptionBits fOptions)
1634{
1635 LogFlow(("org_virtualbox_SupDrvClient::finalize([%p], %#x)\n", this, fOptions));
1636 return IOUserClient::finalize(fOptions);
1637}
1638
1639
1640/**
1641 * Stop the client service. (logging)
1642 */
1643void org_virtualbox_SupDrvClient::stop(IOService *pProvider)
1644{
1645 LogFlow(("org_virtualbox_SupDrvClient::stop([%p])\n", this));
1646 IOUserClient::stop(pProvider);
1647}
1648
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