VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/freebsd/SUPDrv-freebsd.c@ 21796

最後變更 在這個檔案從21796是 20106,由 vboxsync 提交於 16 年 前

Support: Fix build error when compiling in debug mode on FreeBSD HEAD
  • 屬性 svn:eol-style 設為 native
  • 屬性 svn:keywords 設為 Id
檔案大小: 18.3 KB
行 
1/* $Id: SUPDrv-freebsd.c 20106 2009-05-27 19:47:57Z vboxsync $ */
2/** @file
3 * VBoxDrv - The VirtualBox Support Driver - FreeBSD specifics.
4 */
5
6/*
7 * Copyright (c) 2007 knut st. osmundsen <[email protected]>
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* Header Files *
33*******************************************************************************/
34#define LOG_GROUP LOG_GROUP_SUP_DRV
35/* Deal with conflicts first. */
36#include <sys/param.h>
37#undef PVM
38#include <sys/types.h>
39#include <sys/module.h>
40#include <sys/systm.h>
41#include <sys/errno.h>
42#include <sys/kernel.h>
43#include <sys/fcntl.h>
44#include <sys/conf.h>
45#include <sys/uio.h>
46
47#include "../SUPDrvInternal.h"
48#include <VBox/version.h>
49#include <iprt/initterm.h>
50#include <iprt/string.h>
51#include <iprt/spinlock.h>
52#include <iprt/process.h>
53#include <iprt/assert.h>
54#include <iprt/uuid.h>
55#include <VBox/log.h>
56#include <iprt/alloc.h>
57#include <iprt/err.h>
58
59#ifdef VBOX_WITH_HARDENING
60# define VBOXDRV_PERM 0600
61#else
62# define VBOXDRV_PERM 0666
63#endif
64
65/*******************************************************************************
66* Internal Functions *
67*******************************************************************************/
68static int VBoxDrvFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg);
69static int VBoxDrvFreeBSDLoad(void);
70static int VBoxDrvFreeBSDUnload(void);
71static void VBoxDrvFreeBSDClone(void *pvArg, struct ucred *pCred, char *pachName, int cchName, struct cdev **ppDev);
72
73static d_fdopen_t VBoxDrvFreeBSDOpen;
74static d_close_t VBoxDrvFreeBSDClose;
75static d_ioctl_t VBoxDrvFreeBSDIOCtl;
76static int VBoxDrvFreeBSDIOCtlSlow(PSUPDRVSESSION pSession, u_long ulCmd, caddr_t pvData, struct thread *pTd);
77
78
79/*******************************************************************************
80* Global Variables *
81*******************************************************************************/
82/**
83 * Module info structure used by the kernel.
84 */
85static moduledata_t g_VBoxDrvFreeBSDModule =
86{
87 "vboxdrv",
88 VBoxDrvFreeBSDModuleEvent,
89 NULL
90};
91
92/** Declare the module as a pseudo device. */
93DECLARE_MODULE(vboxdrv, g_VBoxDrvFreeBSDModule, SI_SUB_PSEUDO, SI_ORDER_ANY);
94MODULE_VERSION(vboxdrv, 1);
95
96/**
97 * The /dev/vboxdrv character device entry points.
98 */
99static struct cdevsw g_VBoxDrvFreeBSDChrDevSW =
100{
101 .d_version = D_VERSION,
102#if __FreeBSD_version > 800061
103 .d_flags = D_PSEUDO | D_TRACKCLOSE | D_NEEDMINOR,
104#else
105 .d_flags = D_PSEUDO | D_TRACKCLOSE,
106#endif
107 .d_fdopen = VBoxDrvFreeBSDOpen,
108 .d_close = VBoxDrvFreeBSDClose,
109 .d_ioctl = VBoxDrvFreeBSDIOCtl,
110 .d_name = "vboxdrv"
111};
112
113/** List of cloned device. Managed by the kernel. */
114static struct clonedevs *g_pVBoxDrvFreeBSDClones;
115/** The dev_clone event handler tag. */
116static eventhandler_tag g_VBoxDrvFreeBSDEHTag;
117/** Reference counter. */
118static volatile uint32_t g_cUsers;
119
120/** The device extention. */
121static SUPDRVDEVEXT g_VBoxDrvFreeBSDDevExt;
122
123/**
124 * Module event handler.
125 *
126 * @param pMod The module structure.
127 * @param enmEventType The event type (modeventtype_t).
128 * @param pvArg Module argument. NULL.
129 *
130 * @return 0 on success, errno.h status code on failure.
131 */
132static int VBoxDrvFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg)
133{
134 int rc;
135 switch (enmEventType)
136 {
137 case MOD_LOAD:
138 rc = VBoxDrvFreeBSDLoad();
139 break;
140
141 case MOD_UNLOAD:
142 rc = VBoxDrvFreeBSDUnload();
143 break;
144
145 case MOD_SHUTDOWN:
146 case MOD_QUIESCE:
147 default:
148 return EOPNOTSUPP;
149 }
150
151 if (RT_SUCCESS(rc))
152 return 0;
153 return RTErrConvertToErrno(rc);
154}
155
156
157static int VBoxDrvFreeBSDLoad(void)
158{
159 dprintf(("VBoxDrvFreeBSDLoad:\n"));
160
161 g_cUsers = 0;
162
163 /*
164 * Initialize the runtime.
165 */
166 int rc = RTR0Init(0);
167 if (RT_SUCCESS(rc))
168 {
169 /*
170 * Initialize the device extension.
171 */
172 rc = supdrvInitDevExt(&g_VBoxDrvFreeBSDDevExt);
173 if (RT_SUCCESS(rc))
174 {
175 /*
176 * Configure device cloning.
177 */
178 clone_setup(&g_pVBoxDrvFreeBSDClones);
179 g_VBoxDrvFreeBSDEHTag = EVENTHANDLER_REGISTER(dev_clone, VBoxDrvFreeBSDClone, 0, 1000);
180 if (g_VBoxDrvFreeBSDEHTag)
181 {
182 dprintf(("VBoxDrvFreeBSDLoad: returns successfully\n"));
183 return VINF_SUCCESS;
184 }
185
186 printf("vboxdrv: EVENTHANDLER_REGISTER(dev_clone,,,) failed\n");
187 clone_cleanup(&g_pVBoxDrvFreeBSDClones);
188 rc = SUPDRV_ERR_ALREADY_LOADED;
189 supdrvDeleteDevExt(&g_VBoxDrvFreeBSDDevExt);
190 }
191 else
192 printf("vboxdrv: supdrvInitDevExt failed, rc=%d\n", rc);
193 RTR0Term();
194 }
195 else
196 printf("vboxdrv: RTR0Init failed, rc=%d\n", rc);
197 return rc;
198}
199
200static int VBoxDrvFreeBSDUnload(void)
201{
202 dprintf(("VBoxDrvFreeBSDUnload:\n"));
203
204 if (g_cUsers > 0)
205 return EBUSY;
206
207 /*
208 * Reserve what we did in VBoxDrvFreeBSDInit.
209 */
210 EVENTHANDLER_DEREGISTER(dev_clone, g_VBoxDrvFreeBSDEHTag);
211 clone_cleanup(&g_pVBoxDrvFreeBSDClones);
212
213 supdrvDeleteDevExt(&g_VBoxDrvFreeBSDDevExt);
214
215 RTR0Term();
216
217 memset(&g_VBoxDrvFreeBSDDevExt, 0, sizeof(g_VBoxDrvFreeBSDDevExt));
218
219 dprintf(("VBoxDrvFreeBSDUnload: returns\n"));
220 return VINF_SUCCESS;
221}
222
223
224/**
225 * DEVFS event handler.
226 */
227static void VBoxDrvFreeBSDClone(void *pvArg, struct ucred *pCred, char *pszName, int cchName, struct cdev **ppDev)
228{
229 int iUnit;
230 int rc;
231
232 dprintf(("VBoxDrvFreeBSDClone: pszName=%s ppDev=%p\n", pszName, ppDev));
233
234 /*
235 * One device node per user, si_drv1 points to the session.
236 * /dev/vboxdrv<N> where N = {0...255}.
237 */
238 if (!ppDev)
239 return;
240 if (dev_stdclone(pszName, NULL, "vboxdrv", &iUnit) != 1)
241 return;
242 if (iUnit >= 256 || iUnit < 0)
243 {
244 dprintf(("VBoxDrvFreeBSDClone: iUnit=%d >= 256 - rejected\n", iUnit));
245 return;
246 }
247
248 dprintf(("VBoxDrvFreeBSDClone: pszName=%s iUnit=%d\n", pszName, iUnit));
249
250 rc = clone_create(&g_pVBoxDrvFreeBSDClones, &g_VBoxDrvFreeBSDChrDevSW, &iUnit, ppDev, 0);
251 dprintf(("VBoxDrvFreeBSDClone: clone_create -> %d; iUnit=%d\n", rc, iUnit));
252 if (rc)
253 {
254#if __FreeBSD_version > 800061
255 *ppDev = make_dev(&g_VBoxDrvFreeBSDChrDevSW, iUnit, UID_ROOT, GID_WHEEL, VBOXDRV_PERM, "vboxdrv%d", iUnit);
256#else
257 *ppDev = make_dev(&g_VBoxDrvFreeBSDChrDevSW, unit2minor(iUnit), UID_ROOT, GID_WHEEL, VBOXDRV_PERM, "vboxdrv%d", iUnit);
258#endif
259 if (*ppDev)
260 {
261 dev_ref(*ppDev);
262 (*ppDev)->si_flags |= SI_CHEAPCLONE;
263 dprintf(("VBoxDrvFreeBSDClone: Created *ppDev=%p iUnit=%d si_drv1=%p si_drv2=%p\n",
264 *ppDev, iUnit, (*ppDev)->si_drv1, (*ppDev)->si_drv2));
265 (*ppDev)->si_drv1 = (*ppDev)->si_drv2 = NULL;
266 }
267 else
268 OSDBGPRINT(("VBoxDrvFreeBSDClone: make_dev iUnit=%d failed\n", iUnit));
269 }
270 else
271 dprintf(("VBoxDrvFreeBSDClone: Existing *ppDev=%p iUnit=%d si_drv1=%p si_drv2=%p\n",
272 *ppDev, iUnit, (*ppDev)->si_drv1, (*ppDev)->si_drv2));
273}
274
275
276
277/**
278 *
279 * @returns 0 on success, errno on failure.
280 * EBUSY if the device is used by someone else.
281 * @param pDev The device node.
282 * @param fOpen The open flags.
283 * @param pTd The thread.
284 * @param pFd The file descriptor. FreeBSD 7.0 and later.
285 * @param iFd The file descriptor index(?). Pre FreeBSD 7.0.
286 */
287#if __FreeBSD__ >= 7
288static int VBoxDrvFreeBSDOpen(struct cdev *pDev, int fOpen, struct thread *pTd, struct file *pFd)
289#else
290static int VBoxDrvFreeBSDOpen(struct cdev *pDev, int fOpen, struct thread *pTd, int iFd)
291#endif
292{
293 PSUPDRVSESSION pSession;
294 int rc;
295
296#if __FreeBSD_version < 800062
297 dprintf(("VBoxDrvFreeBSDOpen: fOpen=%#x iUnit=%d\n", fOpen, minor2unit(minor(pDev))));
298#else
299 dprintf(("VBoxDrvFreeBSDOpen: fOpen=%#x iUnit=%d\n", fOpen, minor(dev2udev(pDev))));
300#endif
301
302 /*
303 * Let's be a bit picky about the flags...
304 */
305 if (fOpen != (FREAD|FWRITE /*=O_RDWR*/))
306 {
307 dprintf(("VBoxDrvFreeBSDOpen: fOpen=%#x expected %#x\n", fOpen, O_RDWR));
308 return EINVAL;
309 }
310
311 /*
312 * Try grab it (we don't grab the giant, remember).
313 */
314 if (!ASMAtomicCmpXchgPtr(&pDev->si_drv1, (void *)0x42, NULL))
315 return EBUSY;
316
317 /*
318 * Create a new session.
319 */
320 rc = supdrvCreateSession(&g_VBoxDrvFreeBSDDevExt, true /* fUser */, &pSession);
321 if (RT_SUCCESS(rc))
322 {
323 /** @todo get (r)uid and (r)gid.
324 pSession->Uid = stuff;
325 pSession->Gid = stuff; */
326 if (ASMAtomicCmpXchgPtr(&pDev->si_drv1, pSession, (void *)0x42))
327 {
328 ASMAtomicIncU32(&g_cUsers);
329 return 0;
330 }
331
332 OSDBGPRINT(("VBoxDrvFreeBSDOpen: si_drv1=%p, expected 0x42!\n", pDev->si_drv1));
333 supdrvCloseSession(&g_VBoxDrvFreeBSDDevExt, pSession);
334 }
335
336 return RTErrConvertToErrno(rc);
337}
338
339
340/**
341 * Close a file device previously opened by VBoxDrvFreeBSDOpen
342 *
343 * @returns 0 on success.
344 * @param pDev The device.
345 * @param fFile The file descriptor flags.
346 * @param DevType The device type (CHR.
347 * @param pTd The calling thread.
348 */
349static int VBoxDrvFreeBSDClose(struct cdev *pDev, int fFile, int DevType, struct thread *pTd)
350{
351 PSUPDRVSESSION pSession = (PSUPDRVSESSION)pDev->si_drv1;
352#if __FreeBSD_version < 800062
353 dprintf(("VBoxDrvFreeBSDClose: fFile=%#x iUnit=%d pSession=%p\n", fFile, minor2unit(minor(pDev)), pSession));
354#else
355 dprintf(("VBoxDrvFreeBSDClose: fFile=%#x iUnit=%d pSession=%p\n", fFile, minor(dev2udev(pDev)), pSession));
356#endif
357
358 /*
359 * Close the session if it's still hanging on to the device...
360 */
361 if (VALID_PTR(pSession))
362 {
363 supdrvCloseSession(&g_VBoxDrvFreeBSDDevExt, pSession);
364 if (!ASMAtomicCmpXchgPtr(&pDev->si_drv1, NULL, pSession))
365 OSDBGPRINT(("VBoxDrvFreeBSDClose: si_drv1=%p expected %p!\n", pDev->si_drv1, pSession));
366 ASMAtomicDecU32(&g_cUsers);
367 /* Don't use destroy_dev here because it may sleep resulting in a hanging user process. */
368 destroy_dev_sched(pDev);
369 }
370 else
371 OSDBGPRINT(("VBoxDrvFreeBSDClose: si_drv1=%p!\n", pSession));
372 return 0;
373}
374
375
376/**
377 * I/O control request.
378 *
379 * @returns depends...
380 * @param pDev The device.
381 * @param ulCmd The command.
382 * @param pvData Pointer to the data.
383 * @param fFile The file descriptor flags.
384 * @param pTd The calling thread.
385 */
386static int VBoxDrvFreeBSDIOCtl(struct cdev *pDev, u_long ulCmd, caddr_t pvData, int fFile, struct thread *pTd)
387{
388 /*
389 * Validate the input.
390 */
391 PSUPDRVSESSION pSession = (PSUPDRVSESSION)pDev->si_drv1;
392 if (RT_UNLIKELY(!VALID_PTR(pSession)))
393 return EINVAL;
394
395 /*
396 * Deal with the fast ioctl path first.
397 */
398 if ( ulCmd == SUP_IOCTL_FAST_DO_RAW_RUN
399 || ulCmd == SUP_IOCTL_FAST_DO_HWACC_RUN
400 || ulCmd == SUP_IOCTL_FAST_DO_NOP)
401 return supdrvIOCtlFast(ulCmd, *(uint32_t *)pvData, &g_VBoxDrvFreeBSDDevExt, pSession);
402
403 return VBoxDrvFreeBSDIOCtlSlow(pSession, ulCmd, pvData, pTd);
404}
405
406
407/**
408 * Deal with the 'slow' I/O control requests.
409 *
410 * @returns 0 on success, appropriate errno on failure.
411 * @param pSession The session.
412 * @param ulCmd The command.
413 * @param pvData The request data.
414 * @param pTd The calling thread.
415 */
416static int VBoxDrvFreeBSDIOCtlSlow(PSUPDRVSESSION pSession, u_long ulCmd, caddr_t pvData, struct thread *pTd)
417{
418 PSUPREQHDR pHdr;
419 uint32_t cbReq = IOCPARM_LEN(ulCmd);
420 void *pvUser = NULL;
421
422 /*
423 * Buffered request?
424 */
425 if ((IOC_DIRMASK & ulCmd) == IOC_INOUT)
426 {
427 pHdr = (PSUPREQHDR)pvData;
428 if (RT_UNLIKELY(cbReq < sizeof(*pHdr)))
429 {
430 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: cbReq=%#x < %#x; ulCmd=%#lx\n", cbReq, (int)sizeof(*pHdr), ulCmd));
431 return EINVAL;
432 }
433 if (RT_UNLIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
434 {
435 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: bad magic fFlags=%#x; ulCmd=%#lx\n", pHdr->fFlags, ulCmd));
436 return EINVAL;
437 }
438 if (RT_UNLIKELY( RT_MAX(pHdr->cbIn, pHdr->cbOut) != cbReq
439 || pHdr->cbIn < sizeof(*pHdr)
440 || pHdr->cbOut < sizeof(*pHdr)))
441 {
442 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: max(%#x,%#x) != %#x; ulCmd=%#lx\n", pHdr->cbIn, pHdr->cbOut, cbReq, ulCmd));
443 return EINVAL;
444 }
445 }
446 /*
447 * Big unbuffered request?
448 */
449 else if ((IOC_DIRMASK & ulCmd) == IOC_VOID && !cbReq)
450 {
451 /*
452 * Read the header, validate it and figure out how much that needs to be buffered.
453 */
454 SUPREQHDR Hdr;
455 pvUser = *(void **)pvData;
456 int rc = copyin(pvUser, &Hdr, sizeof(Hdr));
457 if (RT_UNLIKELY(rc))
458 {
459 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: copyin(%p,Hdr,) -> %#x; ulCmd=%#lx\n", pvUser, rc, ulCmd));
460 return rc;
461 }
462 if (RT_UNLIKELY((Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
463 {
464 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: bad magic fFlags=%#x; ulCmd=%#lx\n", Hdr.fFlags, ulCmd));
465 return EINVAL;
466 }
467 cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
468 if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr)
469 || Hdr.cbOut < sizeof(Hdr)
470 || cbReq > _1M*16))
471 {
472 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: max(%#x,%#x); ulCmd=%#lx\n", Hdr.cbIn, Hdr.cbOut, ulCmd));
473 return EINVAL;
474 }
475
476 /*
477 * Allocate buffer and copy in the data.
478 */
479 pHdr = (PSUPREQHDR)RTMemTmpAlloc(cbReq);
480 if (RT_UNLIKELY(!pHdr))
481 {
482 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: failed to allocate buffer of %d bytes; ulCmd=%#lx\n", cbReq, ulCmd));
483 return ENOMEM;
484 }
485 rc = copyin(pvUser, pHdr, Hdr.cbIn);
486 if (RT_UNLIKELY(rc))
487 {
488 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: copyin(%p,%p,%#x) -> %#x; ulCmd=%#lx\n",
489 pvUser, pHdr, Hdr.cbIn, rc, ulCmd));
490 RTMemTmpFree(pHdr);
491 return rc;
492 }
493 }
494 else
495 {
496 dprintf(("VBoxDrvFreeBSDIOCtlSlow: huh? cbReq=%#x ulCmd=%#lx\n", cbReq, ulCmd));
497 return EINVAL;
498 }
499
500 /*
501 * Process the IOCtl.
502 */
503 int rc = supdrvIOCtl(ulCmd, &g_VBoxDrvFreeBSDDevExt, pSession, pHdr);
504 if (RT_LIKELY(!rc))
505 {
506 /*
507 * If unbuffered, copy back the result before returning.
508 */
509 if (pvUser)
510 {
511 uint32_t cbOut = pHdr->cbOut;
512 if (cbOut > cbReq)
513 {
514 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: too much output! %#x > %#x; uCmd=%#lx!\n", cbOut, cbReq, ulCmd));
515 cbOut = cbReq;
516 }
517 rc = copyout(pHdr, pvUser, cbOut);
518 if (RT_UNLIKELY(rc))
519 OSDBGPRINT(("VBoxDrvFreeBSDIOCtlSlow: copyout(%p,%p,%#x) -> %d; uCmd=%#lx!\n", pHdr, pvUser, cbOut, rc, ulCmd));
520
521 dprintf(("VBoxDrvFreeBSDIOCtlSlow: returns %d / %d ulCmd=%lx\n", 0, pHdr->rc, ulCmd));
522
523 /* cleanup */
524 RTMemTmpFree(pHdr);
525 }
526 }
527 else
528 {
529 /*
530 * The request failed, just clean up.
531 */
532 if (pvUser)
533 RTMemTmpFree(pHdr);
534
535 dprintf(("VBoxDrvFreeBSDIOCtlSlow: ulCmd=%lx pData=%p failed, rc=%d\n", ulCmd, pvData, rc));
536 rc = EINVAL;
537 }
538
539 return rc;
540}
541
542
543/**
544 * The SUPDRV IDC entry point.
545 *
546 * @returns VBox status code, see supdrvIDC.
547 * @param iReq The request code.
548 * @param pReq The request.
549 */
550int VBOXCALL SUPDrvFreeBSDIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
551{
552 PSUPDRVSESSION pSession;
553
554 /*
555 * Some quick validations.
556 */
557 if (RT_UNLIKELY(!VALID_PTR(pReq)))
558 return VERR_INVALID_POINTER;
559
560 pSession = pReq->pSession;
561 if (pSession)
562 {
563 if (RT_UNLIKELY(!VALID_PTR(pReq->pSession)))
564 return VERR_INVALID_PARAMETER;
565 if (RT_UNLIKELY(pSession->pDevExt != &g_VBoxDrvFreeBSDDevExt))
566 return VERR_INVALID_PARAMETER;
567 }
568 else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
569 return VERR_INVALID_PARAMETER;
570
571 /*
572 * Do the job.
573 */
574 return supdrvIDC(uReq, &g_VBoxDrvFreeBSDDevExt, pSession, pReq);
575}
576
577
578void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
579{
580 NOREF(pObj);
581 NOREF(pSession);
582}
583
584
585bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
586{
587 NOREF(pObj);
588 NOREF(pSession);
589 NOREF(pszObjName);
590 NOREF(prc);
591 return false;
592}
593
594
595bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
596{
597 return false;
598}
599
600
601SUPR0DECL(int) SUPR0Printf(const char *pszFormat, ...)
602{
603 va_list va;
604 char szMsg[256];
605 int cch;
606
607 va_start(va, pszFormat);
608 cch = RTStrPrintfV(szMsg, sizeof(szMsg), pszFormat, va);
609 va_end(va);
610
611 printf("%s", szMsg);
612
613 return cch;
614}
615
注意: 瀏覽 TracBrowser 來幫助您使用儲存庫瀏覽器

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette