VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/freebsd/SUPDrv-freebsd.c@ 67981

Last change on this file since 67981 was 59217, checked in by vboxsync, 8 years ago

SUPDrv: Fix incomplete renaming of VBoxDrvFreeBSDDtr (r103540).
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 18.1 KB
Line 
1/* $Id: SUPDrv-freebsd.c 59217 2015-12-22 21:11:49Z vboxsync $ */
2/** @file
3 * VBoxDrv - The VirtualBox Support Driver - FreeBSD specifics.
4 */
5
6/*
7 * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
8 *
9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
29 */
30
31
32/*********************************************************************************************************************************
33* Header Files *
34*********************************************************************************************************************************/
35#define LOG_GROUP LOG_GROUP_SUP_DRV
36/* Deal with conflicts first. */
37#include <sys/param.h>
38#undef PVM
39#include <sys/types.h>
40#include <sys/module.h>
41#include <sys/systm.h>
42#include <sys/errno.h>
43#include <sys/kernel.h>
44#include <sys/fcntl.h>
45#include <sys/conf.h>
46#include <sys/uio.h>
47
48#include "../SUPDrvInternal.h"
49#include <VBox/version.h>
50#include <iprt/initterm.h>
51#include <iprt/string.h>
52#include <iprt/spinlock.h>
53#include <iprt/process.h>
54#include <iprt/assert.h>
55#include <iprt/uuid.h>
56#include <VBox/log.h>
57#include <iprt/alloc.h>
58#include <iprt/err.h>
59#include <iprt/asm.h>
60
61#ifdef VBOX_WITH_HARDENING
62# define VBOXDRV_PERM 0600
63#else
64# define VBOXDRV_PERM 0666
65#endif
66
67
68/*********************************************************************************************************************************
69* Internal Functions *
70*********************************************************************************************************************************/
71static int VBoxDrvFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg);
72static int VBoxDrvFreeBSDLoad(void);
73static int VBoxDrvFreeBSDUnload(void);
74
75static d_open_t VBoxDrvFreeBSDOpenUsr;
76static d_open_t VBoxDrvFreeBSDOpenSys;
77static void vboxdrvFreeBSDDtr(void *pvData);
78static d_ioctl_t VBoxDrvFreeBSDIOCtl;
79static int VBoxDrvFreeBSDIOCtlSlow(PSUPDRVSESSION pSession, u_long ulCmd, caddr_t pvData, struct thread *pTd);
80
81
82/*********************************************************************************************************************************
83* Global Variables *
84*********************************************************************************************************************************/
85/**
86 * Module info structure used by the kernel.
87 */
88static moduledata_t g_VBoxDrvFreeBSDModule =
89{
90 "vboxdrv",
91 VBoxDrvFreeBSDModuleEvent,
92 NULL
93};
94
95/** Declare the module as a pseudo device. */
96DECLARE_MODULE(vboxdrv, g_VBoxDrvFreeBSDModule, SI_SUB_PSEUDO, SI_ORDER_ANY);
97MODULE_VERSION(vboxdrv, 1);
98
99/**
100 * The /dev/vboxdrv character device entry points.
101 */
102static struct cdevsw g_VBoxDrvFreeBSDChrDevSwSys =
103{
104 .d_version = D_VERSION,
105 .d_open = VBoxDrvFreeBSDOpenSys,
106 .d_ioctl = VBoxDrvFreeBSDIOCtl,
107 .d_name = "vboxdrv"
108};
109/** The /dev/vboxdrv character device. */
110static struct cdev *g_pVBoxDrvFreeBSDChrDevSys;
111
112/**
113 * The /dev/vboxdrvu character device entry points.
114 */
115static struct cdevsw g_VBoxDrvFreeBSDChrDevSwUsr =
116{
117 .d_version = D_VERSION,
118 .d_open = VBoxDrvFreeBSDOpenUsr,
119 .d_ioctl = VBoxDrvFreeBSDIOCtl,
120 .d_name = "vboxdrvu"
121};
122/** The /dev/vboxdrvu character device. */
123static struct cdev *g_pVBoxDrvFreeBSDChrDevUsr;
124
125/** Reference counter. */
126static volatile uint32_t g_cUsers;
127
128/** The device extention. */
129static SUPDRVDEVEXT g_VBoxDrvFreeBSDDevExt;
130
131/**
132 * Module event handler.
133 *
134 * @param pMod The module structure.
135 * @param enmEventType The event type (modeventtype_t).
136 * @param pvArg Module argument. NULL.
137 *
138 * @return 0 on success, errno.h status code on failure.
139 */
140static int VBoxDrvFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg)
141{
142 int rc;
143 switch (enmEventType)
144 {
145 case MOD_LOAD:
146 rc = VBoxDrvFreeBSDLoad();
147 break;
148
149 case MOD_UNLOAD:
150 mtx_unlock(&Giant);
151 rc = VBoxDrvFreeBSDUnload();
152 mtx_lock(&Giant);
153 break;
154
155 case MOD_SHUTDOWN:
156 case MOD_QUIESCE:
157 default:
158 return EOPNOTSUPP;
159 }
160
161 if (RT_SUCCESS(rc))
162 return 0;
163 return RTErrConvertToErrno(rc);
164}
165
166
167static int VBoxDrvFreeBSDLoad(void)
168{
169 g_cUsers = 0;
170
171 /*
172 * Initialize the runtime.
173 */
174 int rc = RTR0Init(0);
175 if (RT_SUCCESS(rc))
176 {
177 Log(("VBoxDrvFreeBSDLoad:\n"));
178
179 /*
180 * Initialize the device extension.
181 */
182 rc = supdrvInitDevExt(&g_VBoxDrvFreeBSDDevExt, sizeof(SUPDRVSESSION));
183 if (RT_SUCCESS(rc))
184 {
185 /*
186 * Configure character devices. Add symbolic links for compatibility.
187 */
188 g_pVBoxDrvFreeBSDChrDevSys = make_dev(&g_VBoxDrvFreeBSDChrDevSwSys, 0, UID_ROOT, GID_WHEEL, VBOXDRV_PERM, "vboxdrv");
189 g_pVBoxDrvFreeBSDChrDevUsr = make_dev(&g_VBoxDrvFreeBSDChrDevSwUsr, 1, UID_ROOT, GID_WHEEL, 0666, "vboxdrvu");
190 return VINF_SUCCESS;
191 }
192
193 printf("vboxdrv: supdrvInitDevExt failed, rc=%d\n", rc);
194 RTR0Term();
195 }
196 else
197 printf("vboxdrv: RTR0Init failed, rc=%d\n", rc);
198 return rc;
199}
200
201static int VBoxDrvFreeBSDUnload(void)
202{
203 Log(("VBoxDrvFreeBSDUnload:\n"));
204
205 if (g_cUsers > 0)
206 return VERR_RESOURCE_BUSY;
207
208 /*
209 * Reserve what we did in VBoxDrvFreeBSDInit.
210 */
211 destroy_dev(g_pVBoxDrvFreeBSDChrDevUsr);
212 destroy_dev(g_pVBoxDrvFreeBSDChrDevSys);
213
214 supdrvDeleteDevExt(&g_VBoxDrvFreeBSDDevExt);
215
216 RTR0TermForced();
217
218 memset(&g_VBoxDrvFreeBSDDevExt, 0, sizeof(g_VBoxDrvFreeBSDDevExt));
219 return VINF_SUCCESS;
220}
221
222
223/**
224 *
225 * @returns 0 on success, errno on failure.
226 * EBUSY if the device is used by someone else.
227 * @param pDev The device node.
228 * @param fOpen The open flags.
229 * @param iDevType Some device type thing we don't use.
230 * @param pTd The thread.
231 * @param fUnrestricted Set if opening /dev/vboxdrv, clear if /dev/vboxdrvu.
232 */
233static int vboxdrvFreeBSDOpenCommon(struct cdev *pDev, int fOpen, int iDevType, struct thread *pTd, bool fUnrestricted)
234{
235 PSUPDRVSESSION pSession;
236 int rc;
237
238 /*
239 * Let's be a bit picky about the flags...
240 */
241 if (fOpen != (FREAD | FWRITE /*=O_RDWR*/))
242 {
243 Log(("VBoxDrvFreeBSDOpen: fOpen=%#x expected %#x\n", fOpen, O_RDWR));
244 return EINVAL;
245 }
246
247 /*
248 * Create a new session.
249 */
250 rc = supdrvCreateSession(&g_VBoxDrvFreeBSDDevExt, true /* fUser */, fUnrestricted, &pSession);
251 if (RT_SUCCESS(rc))
252 {
253 /** @todo get (r)uid and (r)gid.
254 pSession->Uid = stuff;
255 pSession->Gid = stuff; */
256 rc = devfs_set_cdevpriv(pSession, vboxdrvFreeBSDDtr); Assert(rc == 0);
257 Log(("VBoxDrvFreeBSDOpen: pSession=%p\n", pSession));
258 ASMAtomicIncU32(&g_cUsers);
259 return 0;
260 }
261
262 return RTErrConvertToErrno(rc);
263}
264
265
266/** For vboxdrv. */
267static int VBoxDrvFreeBSDOpenSys(struct cdev *pDev, int fOpen, int iDevType, struct thread *pTd)
268{
269 return vboxdrvFreeBSDOpenCommon(pDev, fOpen, iDevType, pTd, true);
270}
271
272
273/** For vboxdrvu. */
274static int VBoxDrvFreeBSDOpenUsr(struct cdev *pDev, int fOpen, int iDevType, struct thread *pTd)
275{
276 return vboxdrvFreeBSDOpenCommon(pDev, fOpen, iDevType, pTd, false);
277}
278
279
280/**
281 * Close a file device previously opened by VBoxDrvFreeBSDOpen.
282 *
283 * @returns 0 on success.
284 * @param pvData The session being closed.
285 */
286static void vboxdrvFreeBSDDtr(void *pvData)
287{
288 PSUPDRVSESSION pSession = pvData;
289 Log(("vboxdrvFreeBSDDtr: pSession=%p\n", pSession));
290
291 /*
292 * Close the session.
293 */
294 supdrvSessionRelease(pSession);
295 ASMAtomicDecU32(&g_cUsers);
296}
297
298
299/**
300 * I/O control request.
301 *
302 * @returns depends...
303 * @param pDev The device.
304 * @param ulCmd The command.
305 * @param pvData Pointer to the data.
306 * @param fFile The file descriptor flags.
307 * @param pTd The calling thread.
308 */
309static int VBoxDrvFreeBSDIOCtl(struct cdev *pDev, u_long ulCmd, caddr_t pvData, int fFile, struct thread *pTd)
310{
311 PSUPDRVSESSION pSession;
312 devfs_get_cdevpriv((void **)&pSession);
313
314 /*
315 * Deal with the fast ioctl path first.
316 */
317 if ( ( ulCmd == SUP_IOCTL_FAST_DO_RAW_RUN
318 || ulCmd == SUP_IOCTL_FAST_DO_HM_RUN
319 || ulCmd == SUP_IOCTL_FAST_DO_NOP)
320 && pSession->fUnrestricted == true)
321 return supdrvIOCtlFast(ulCmd, *(uint32_t *)pvData, &g_VBoxDrvFreeBSDDevExt, pSession);
322
323 return VBoxDrvFreeBSDIOCtlSlow(pSession, ulCmd, pvData, pTd);
324}
325
326
327/**
328 * Deal with the 'slow' I/O control requests.
329 *
330 * @returns 0 on success, appropriate errno on failure.
331 * @param pSession The session.
332 * @param ulCmd The command.
333 * @param pvData The request data.
334 * @param pTd The calling thread.
335 */
336static int VBoxDrvFreeBSDIOCtlSlow(PSUPDRVSESSION pSession, u_long ulCmd, caddr_t pvData, struct thread *pTd)
337{
338 PSUPREQHDR pHdr;
339 uint32_t cbReq = IOCPARM_LEN(ulCmd);
340 void *pvUser = NULL;
341
342 /*
343 * Buffered request?
344 */
345 if ((IOC_DIRMASK & ulCmd) == IOC_INOUT)
346 {
347 pHdr = (PSUPREQHDR)pvData;
348 if (RT_UNLIKELY(cbReq < sizeof(*pHdr)))
349 {
350 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: cbReq=%#x < %#x; ulCmd=%#lx\n", cbReq, (int)sizeof(*pHdr), ulCmd));
351 return EINVAL;
352 }
353 if (RT_UNLIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
354 {
355 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: bad magic fFlags=%#x; ulCmd=%#lx\n", pHdr->fFlags, ulCmd));
356 return EINVAL;
357 }
358 if (RT_UNLIKELY( RT_MAX(pHdr->cbIn, pHdr->cbOut) != cbReq
359 || pHdr->cbIn < sizeof(*pHdr)
360 || pHdr->cbOut < sizeof(*pHdr)))
361 {
362 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: max(%#x,%#x) != %#x; ulCmd=%#lx\n", pHdr->cbIn, pHdr->cbOut, cbReq, ulCmd));
363 return EINVAL;
364 }
365 }
366 /*
367 * Big unbuffered request?
368 */
369 else if ((IOC_DIRMASK & ulCmd) == IOC_VOID && !cbReq)
370 {
371 /*
372 * Read the header, validate it and figure out how much that needs to be buffered.
373 */
374 SUPREQHDR Hdr;
375 pvUser = *(void **)pvData;
376 int rc = copyin(pvUser, &Hdr, sizeof(Hdr));
377 if (RT_UNLIKELY(rc))
378 {
379 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: copyin(%p,Hdr,) -> %#x; ulCmd=%#lx\n", pvUser, rc, ulCmd));
380 return rc;
381 }
382 if (RT_UNLIKELY((Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
383 {
384 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: bad magic fFlags=%#x; ulCmd=%#lx\n", Hdr.fFlags, ulCmd));
385 return EINVAL;
386 }
387 cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
388 if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr)
389 || Hdr.cbOut < sizeof(Hdr)
390 || cbReq > _1M*16))
391 {
392 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: max(%#x,%#x); ulCmd=%#lx\n", Hdr.cbIn, Hdr.cbOut, ulCmd));
393 return EINVAL;
394 }
395
396 /*
397 * Allocate buffer and copy in the data.
398 */
399 pHdr = (PSUPREQHDR)RTMemTmpAlloc(cbReq);
400 if (RT_UNLIKELY(!pHdr))
401 {
402 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: failed to allocate buffer of %d bytes; ulCmd=%#lx\n", cbReq, ulCmd));
403 return ENOMEM;
404 }
405 rc = copyin(pvUser, pHdr, Hdr.cbIn);
406 if (RT_UNLIKELY(rc))
407 {
408 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: copyin(%p,%p,%#x) -> %#x; ulCmd=%#lx\n",
409 pvUser, pHdr, Hdr.cbIn, rc, ulCmd));
410 RTMemTmpFree(pHdr);
411 return rc;
412 }
413 if (Hdr.cbIn < cbReq)
414 RT_BZERO((uint8_t *)pHdr + Hdr.cbIn, cbReq - Hdr.cbIn);
415 }
416 else
417 {
418 Log(("VBoxDrvFreeBSDIOCtlSlow: huh? cbReq=%#x ulCmd=%#lx\n", cbReq, ulCmd));
419 return EINVAL;
420 }
421
422 /*
423 * Process the IOCtl.
424 */
425 int rc = supdrvIOCtl(ulCmd, &g_VBoxDrvFreeBSDDevExt, pSession, pHdr, cbReq);
426 if (RT_LIKELY(!rc))
427 {
428 /*
429 * If unbuffered, copy back the result before returning.
430 */
431 if (pvUser)
432 {
433 uint32_t cbOut = pHdr->cbOut;
434 if (cbOut > cbReq)
435 {
436 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: too much output! %#x > %#x; uCmd=%#lx!\n", cbOut, cbReq, ulCmd));
437 cbOut = cbReq;
438 }
439 rc = copyout(pHdr, pvUser, cbOut);
440 if (RT_UNLIKELY(rc))
441 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: copyout(%p,%p,%#x) -> %d; uCmd=%#lx!\n", pHdr, pvUser, cbOut, rc, ulCmd));
442
443 Log(("VBoxDrvFreeBSDIOCtlSlow: returns %d / %d ulCmd=%lx\n", 0, pHdr->rc, ulCmd));
444
445 /* cleanup */
446 RTMemTmpFree(pHdr);
447 }
448 }
449 else
450 {
451 /*
452 * The request failed, just clean up.
453 */
454 if (pvUser)
455 RTMemTmpFree(pHdr);
456
457 Log(("VBoxDrvFreeBSDIOCtlSlow: ulCmd=%lx pData=%p failed, rc=%d\n", ulCmd, pvData, rc));
458 rc = EINVAL;
459 }
460
461 return rc;
462}
463
464
465/**
466 * The SUPDRV IDC entry point.
467 *
468 * @returns VBox status code, see supdrvIDC.
469 * @param uReq The request code.
470 * @param pReq The request.
471 */
472int VBOXCALL SUPDrvFreeBSDIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
473{
474 PSUPDRVSESSION pSession;
475
476 /*
477 * Some quick validations.
478 */
479 if (RT_UNLIKELY(!VALID_PTR(pReq)))
480 return VERR_INVALID_POINTER;
481
482 pSession = pReq->pSession;
483 if (pSession)
484 {
485 if (RT_UNLIKELY(!VALID_PTR(pReq->pSession)))
486 return VERR_INVALID_PARAMETER;
487 if (RT_UNLIKELY(pSession->pDevExt != &g_VBoxDrvFreeBSDDevExt))
488 return VERR_INVALID_PARAMETER;
489 }
490 else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
491 return VERR_INVALID_PARAMETER;
492
493 /*
494 * Do the job.
495 */
496 return supdrvIDC(uReq, &g_VBoxDrvFreeBSDDevExt, pSession, pReq);
497}
498
499
500void VBOXCALL supdrvOSCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
501{
502 NOREF(pDevExt);
503 NOREF(pSession);
504}
505
506
507void VBOXCALL supdrvOSSessionHashTabInserted(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
508{
509 NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
510}
511
512
513void VBOXCALL supdrvOSSessionHashTabRemoved(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
514{
515 NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
516}
517
518
519void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
520{
521 NOREF(pObj);
522 NOREF(pSession);
523}
524
525
526bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
527{
528 NOREF(pObj);
529 NOREF(pSession);
530 NOREF(pszObjName);
531 NOREF(prc);
532 return false;
533}
534
535
536bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
537{
538 return false;
539}
540
541
542bool VBOXCALL supdrvOSAreCpusOfflinedOnSuspend(void)
543{
544 /** @todo verify this. */
545 return false;
546}
547
548
549bool VBOXCALL supdrvOSAreTscDeltasInSync(void)
550{
551 return false;
552}
553
554
555int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
556{
557 NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
558 return VERR_NOT_SUPPORTED;
559}
560
561
562int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv, const uint8_t *pbImageBits)
563{
564 NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
565 return VERR_NOT_SUPPORTED;
566}
567
568
569int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
570{
571 NOREF(pDevExt); NOREF(pImage); NOREF(pbImageBits); NOREF(pReq);
572 return VERR_NOT_SUPPORTED;
573}
574
575
576void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
577{
578 NOREF(pDevExt); NOREF(pImage);
579}
580
581
582void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
583{
584 NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
585}
586
587
588void VBOXCALL supdrvOSLdrNotifyUnloaded(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
589{
590 NOREF(pDevExt); NOREF(pImage);
591}
592
593
594#ifdef SUPDRV_WITH_MSR_PROBER
595
596int VBOXCALL supdrvOSMsrProberRead(uint32_t uMsr, RTCPUID idCpu, uint64_t *puValue)
597{
598 NOREF(uMsr); NOREF(idCpu); NOREF(puValue);
599 return VERR_NOT_SUPPORTED;
600}
601
602
603int VBOXCALL supdrvOSMsrProberWrite(uint32_t uMsr, RTCPUID idCpu, uint64_t uValue)
604{
605 NOREF(uMsr); NOREF(idCpu); NOREF(uValue);
606 return VERR_NOT_SUPPORTED;
607}
608
609
610int VBOXCALL supdrvOSMsrProberModify(RTCPUID idCpu, PSUPMSRPROBER pReq)
611{
612 NOREF(idCpu); NOREF(pReq);
613 return VERR_NOT_SUPPORTED;
614}
615
616#endif /* SUPDRV_WITH_MSR_PROBER */
617
618
619SUPR0DECL(int) SUPR0Printf(const char *pszFormat, ...)
620{
621 va_list va;
622 char szMsg[256];
623 int cch;
624
625 va_start(va, pszFormat);
626 cch = RTStrPrintfV(szMsg, sizeof(szMsg), pszFormat, va);
627 va_end(va);
628
629 printf("%s", szMsg);
630
631 return cch;
632}
633
634
635SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void)
636{
637 return 0;
638}
639
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