1 | /** @file
|
---|
2 | *
|
---|
3 | * VBoxGuestLib - A support library for VirtualBox guest additions:
|
---|
4 | * Host-Guest Communication Manager internal functions, implemented by VBoxGuest
|
---|
5 | */
|
---|
6 |
|
---|
7 | /*
|
---|
8 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
|
---|
9 | *
|
---|
10 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
11 | * available from http://www.virtualbox.org. This file is free software;
|
---|
12 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
13 | * General Public License (GPL) as published by the Free Software
|
---|
14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
---|
15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
---|
16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
17 | *
|
---|
18 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
|
---|
19 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
|
---|
20 | * additional information or have any questions.
|
---|
21 | */
|
---|
22 |
|
---|
23 | /* Entire file is ifdef'ed with VBGL_VBOXGUEST */
|
---|
24 | #ifdef VBGL_VBOXGUEST
|
---|
25 |
|
---|
26 | #include <VBox/VBoxGuestLib.h>
|
---|
27 | #include "VBGLInternal.h"
|
---|
28 | #include <iprt/string.h>
|
---|
29 | #include <iprt/assert.h>
|
---|
30 | #include <iprt/alloca.h>
|
---|
31 |
|
---|
32 | /* These functions can be only used by VBoxGuest. */
|
---|
33 |
|
---|
34 | DECLVBGL(int) VbglHGCMConnect (VBoxGuestHGCMConnectInfo *pConnectInfo,
|
---|
35 | VBGLHGCMCALLBACK *pAsyncCallback, void *pvAsyncData,
|
---|
36 | uint32_t u32AsyncData)
|
---|
37 | {
|
---|
38 | VMMDevHGCMConnect *pHGCMConnect;
|
---|
39 | int rc;
|
---|
40 |
|
---|
41 | if (!pConnectInfo || !pAsyncCallback)
|
---|
42 | return VERR_INVALID_PARAMETER;
|
---|
43 |
|
---|
44 | pHGCMConnect = NULL;
|
---|
45 |
|
---|
46 | /* Allocate request */
|
---|
47 | rc = VbglGRAlloc ((VMMDevRequestHeader **)&pHGCMConnect, sizeof (VMMDevHGCMConnect), VMMDevReq_HGCMConnect);
|
---|
48 |
|
---|
49 | if (RT_SUCCESS(rc))
|
---|
50 | {
|
---|
51 | /* Initialize request memory */
|
---|
52 | pHGCMConnect->header.fu32Flags = 0;
|
---|
53 |
|
---|
54 | memcpy (&pHGCMConnect->loc, &pConnectInfo->Loc, sizeof (HGCMServiceLocation));
|
---|
55 | pHGCMConnect->u32ClientID = 0;
|
---|
56 |
|
---|
57 | /* Issue request */
|
---|
58 | rc = VbglGRPerform (&pHGCMConnect->header.header);
|
---|
59 |
|
---|
60 | if (RT_SUCCESS(rc))
|
---|
61 | {
|
---|
62 | /* Check if host decides to process the request asynchronously. */
|
---|
63 | if (rc == VINF_HGCM_ASYNC_EXECUTE)
|
---|
64 | {
|
---|
65 | /* Wait for request completion interrupt notification from host */
|
---|
66 | pAsyncCallback (&pHGCMConnect->header, pvAsyncData, u32AsyncData);
|
---|
67 | }
|
---|
68 |
|
---|
69 | pConnectInfo->result = pHGCMConnect->header.result;
|
---|
70 |
|
---|
71 | if (RT_SUCCESS (pConnectInfo->result))
|
---|
72 | pConnectInfo->u32ClientID = pHGCMConnect->u32ClientID;
|
---|
73 | }
|
---|
74 |
|
---|
75 | VbglGRFree (&pHGCMConnect->header.header);
|
---|
76 | }
|
---|
77 |
|
---|
78 | return rc;
|
---|
79 | }
|
---|
80 |
|
---|
81 |
|
---|
82 | DECLVBGL(int) VbglHGCMDisconnect (VBoxGuestHGCMDisconnectInfo *pDisconnectInfo,
|
---|
83 | VBGLHGCMCALLBACK *pAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
|
---|
84 | {
|
---|
85 | VMMDevHGCMDisconnect *pHGCMDisconnect;
|
---|
86 | int rc;
|
---|
87 |
|
---|
88 | if (!pDisconnectInfo || !pAsyncCallback)
|
---|
89 | return VERR_INVALID_PARAMETER;
|
---|
90 |
|
---|
91 | pHGCMDisconnect = NULL;
|
---|
92 |
|
---|
93 | /* Allocate request */
|
---|
94 | rc = VbglGRAlloc ((VMMDevRequestHeader **)&pHGCMDisconnect, sizeof (VMMDevHGCMDisconnect), VMMDevReq_HGCMDisconnect);
|
---|
95 |
|
---|
96 | if (RT_SUCCESS(rc))
|
---|
97 | {
|
---|
98 | /* Initialize request memory */
|
---|
99 | pHGCMDisconnect->header.fu32Flags = 0;
|
---|
100 |
|
---|
101 | pHGCMDisconnect->u32ClientID = pDisconnectInfo->u32ClientID;
|
---|
102 |
|
---|
103 | /* Issue request */
|
---|
104 | rc = VbglGRPerform (&pHGCMDisconnect->header.header);
|
---|
105 |
|
---|
106 | if (RT_SUCCESS(rc))
|
---|
107 | {
|
---|
108 | /* Check if host decides to process the request asynchronously. */
|
---|
109 | if (rc == VINF_HGCM_ASYNC_EXECUTE)
|
---|
110 | {
|
---|
111 | /* Wait for request completion interrupt notification from host */
|
---|
112 | pAsyncCallback (&pHGCMDisconnect->header, pvAsyncData, u32AsyncData);
|
---|
113 | }
|
---|
114 |
|
---|
115 | pDisconnectInfo->result = pHGCMDisconnect->header.result;
|
---|
116 | }
|
---|
117 |
|
---|
118 | VbglGRFree (&pHGCMDisconnect->header.header);
|
---|
119 | }
|
---|
120 |
|
---|
121 | return rc;
|
---|
122 | }
|
---|
123 |
|
---|
124 |
|
---|
125 | /** @todo merge with the one below (use a header file). Too lazy now. */
|
---|
126 | DECLVBGL(int) VbglHGCMCall (VBoxGuestHGCMCallInfo *pCallInfo,
|
---|
127 | VBGLHGCMCALLBACK *pAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
|
---|
128 | {
|
---|
129 | VMMDevHGCMCall *pHGCMCall;
|
---|
130 | uint32_t cbParms;
|
---|
131 | HGCMFunctionParameter *pParm;
|
---|
132 | unsigned iParm;
|
---|
133 | int rc;
|
---|
134 |
|
---|
135 | if (!pCallInfo || !pAsyncCallback || pCallInfo->cParms > VBOX_HGCM_MAX_PARMS)
|
---|
136 | {
|
---|
137 | AssertFailed();
|
---|
138 | return VERR_INVALID_PARAMETER;
|
---|
139 | }
|
---|
140 |
|
---|
141 | Log (("VbglHGCMCall: pCallInfo->cParms = %d, pHGCMCall->u32Function = %d\n", pCallInfo->cParms, pCallInfo->u32Function));
|
---|
142 |
|
---|
143 | pHGCMCall = NULL;
|
---|
144 |
|
---|
145 | cbParms = pCallInfo->cParms * sizeof (HGCMFunctionParameter);
|
---|
146 |
|
---|
147 | /* Allocate request */
|
---|
148 | rc = VbglGRAlloc ((VMMDevRequestHeader **)&pHGCMCall, sizeof (VMMDevHGCMCall) + cbParms, VMMDevReq_HGCMCall);
|
---|
149 |
|
---|
150 | Log (("VbglHGCMCall Allocated gr %p, rc = %Rrc, cbParms = %d\n", pHGCMCall, rc, cbParms));
|
---|
151 |
|
---|
152 | if (RT_SUCCESS(rc))
|
---|
153 | {
|
---|
154 | void *apvCtx[VBOX_HGCM_MAX_PARMS];
|
---|
155 | memset (apvCtx, 0, sizeof(void *) * pCallInfo->cParms);
|
---|
156 |
|
---|
157 | /* Initialize request memory */
|
---|
158 | pHGCMCall->header.fu32Flags = 0;
|
---|
159 | pHGCMCall->header.result = VINF_SUCCESS;
|
---|
160 |
|
---|
161 | pHGCMCall->u32ClientID = pCallInfo->u32ClientID;
|
---|
162 | pHGCMCall->u32Function = pCallInfo->u32Function;
|
---|
163 | pHGCMCall->cParms = pCallInfo->cParms;
|
---|
164 |
|
---|
165 | if (cbParms)
|
---|
166 | {
|
---|
167 | /* Lock user buffers. */
|
---|
168 | pParm = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo);
|
---|
169 |
|
---|
170 | for (iParm = 0; iParm < pCallInfo->cParms; iParm++, pParm++)
|
---|
171 | {
|
---|
172 | switch (pParm->type)
|
---|
173 | {
|
---|
174 | case VMMDevHGCMParmType_LinAddr_Locked_In:
|
---|
175 | pParm->type = VMMDevHGCMParmType_LinAddr_In;
|
---|
176 | break;
|
---|
177 | case VMMDevHGCMParmType_LinAddr_Locked_Out:
|
---|
178 | pParm->type = VMMDevHGCMParmType_LinAddr_Out;
|
---|
179 | break;
|
---|
180 | case VMMDevHGCMParmType_LinAddr_Locked:
|
---|
181 | pParm->type = VMMDevHGCMParmType_LinAddr;
|
---|
182 | break;
|
---|
183 |
|
---|
184 | case VMMDevHGCMParmType_LinAddr_In:
|
---|
185 | case VMMDevHGCMParmType_LinAddr_Out:
|
---|
186 | case VMMDevHGCMParmType_LinAddr:
|
---|
187 | /* PORTME: When porting this to Darwin and other systems where the entire kernel isn't mapped
|
---|
188 | into every process, all linear address will have to be converted to physical SG lists at
|
---|
189 | this point. Care must also be taken on these guests to not mix kernel and user addresses
|
---|
190 | in HGCM calls, or we'll end up locking the wrong memory. If VMMDev/HGCM gets a linear address
|
---|
191 | it will assume that it's in the current memory context (i.e. use CR3 to translate it).
|
---|
192 |
|
---|
193 | These kind of problems actually applies to some patched linux kernels too, including older
|
---|
194 | fedora releases. (The patch is the infamous 4G/4G patch, aka 4g4g, by Ingo Molnar.) */
|
---|
195 | rc = vbglLockLinear (&apvCtx[iParm], (void *)pParm->u.Pointer.u.linearAddr, pParm->u.Pointer.size, (pParm->type == VMMDevHGCMParmType_LinAddr_In) ? false : true /* write access */);
|
---|
196 | break;
|
---|
197 | default:
|
---|
198 | /* make gcc happy */
|
---|
199 | break;
|
---|
200 | }
|
---|
201 | if (RT_FAILURE (rc))
|
---|
202 | break;
|
---|
203 | }
|
---|
204 | memcpy (VMMDEV_HGCM_CALL_PARMS(pHGCMCall), VBOXGUEST_HGCM_CALL_PARMS(pCallInfo), cbParms);
|
---|
205 | }
|
---|
206 |
|
---|
207 | /* Check that the parameter locking was ok. */
|
---|
208 | if (RT_SUCCESS(rc))
|
---|
209 | {
|
---|
210 | Log (("calling VbglGRPerform\n"));
|
---|
211 |
|
---|
212 | /* Issue request */
|
---|
213 | rc = VbglGRPerform (&pHGCMCall->header.header);
|
---|
214 |
|
---|
215 | Log (("VbglGRPerform rc = %Rrc (header rc=%d)\n", rc, pHGCMCall->header.result));
|
---|
216 |
|
---|
217 | /** If the call failed, but as a result of the request itself, then pretend success
|
---|
218 | * Upper layers will interpret the result code in the packet.
|
---|
219 | */
|
---|
220 | if (RT_FAILURE(rc) && rc == pHGCMCall->header.result)
|
---|
221 | {
|
---|
222 | Assert(pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE);
|
---|
223 | rc = VINF_SUCCESS;
|
---|
224 | }
|
---|
225 |
|
---|
226 | if (RT_SUCCESS(rc))
|
---|
227 | {
|
---|
228 | /* Check if host decides to process the request asynchronously. */
|
---|
229 | if (rc == VINF_HGCM_ASYNC_EXECUTE)
|
---|
230 | {
|
---|
231 | /* Wait for request completion interrupt notification from host */
|
---|
232 | Log (("Processing HGCM call asynchronously\n"));
|
---|
233 | pAsyncCallback (&pHGCMCall->header, pvAsyncData, u32AsyncData);
|
---|
234 | }
|
---|
235 |
|
---|
236 | if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE)
|
---|
237 | {
|
---|
238 | if (cbParms)
|
---|
239 | {
|
---|
240 | memcpy (VBOXGUEST_HGCM_CALL_PARMS(pCallInfo), VMMDEV_HGCM_CALL_PARMS(pHGCMCall), cbParms);
|
---|
241 | }
|
---|
242 | pCallInfo->result = pHGCMCall->header.result;
|
---|
243 | }
|
---|
244 | else
|
---|
245 | {
|
---|
246 | /* The callback returns without completing the request,
|
---|
247 | * that means the wait was interrrupted. That can happen
|
---|
248 | * if the request times out, the system reboots or the
|
---|
249 | * VBoxService ended abnormally.
|
---|
250 | *
|
---|
251 | * Cancel the request, the host will not write to the
|
---|
252 | * memory related to the cancelled request.
|
---|
253 | */
|
---|
254 | Log (("Cancelling HGCM call\n"));
|
---|
255 | pHGCMCall->header.fu32Flags |= VBOX_HGCM_REQ_CANCELLED;
|
---|
256 |
|
---|
257 | pHGCMCall->header.header.requestType = VMMDevReq_HGCMCancel;
|
---|
258 | VbglGRPerform (&pHGCMCall->header.header);
|
---|
259 | }
|
---|
260 | }
|
---|
261 | }
|
---|
262 |
|
---|
263 | /* Unlock user buffers. */
|
---|
264 | pParm = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo);
|
---|
265 |
|
---|
266 | for (iParm = 0; iParm < pCallInfo->cParms; iParm++, pParm++)
|
---|
267 | {
|
---|
268 | if ( pParm->type == VMMDevHGCMParmType_LinAddr_In
|
---|
269 | || pParm->type == VMMDevHGCMParmType_LinAddr_Out
|
---|
270 | || pParm->type == VMMDevHGCMParmType_LinAddr)
|
---|
271 | {
|
---|
272 | if (apvCtx[iParm] != NULL)
|
---|
273 | {
|
---|
274 | vbglUnlockLinear (apvCtx[iParm], (void *)pParm->u.Pointer.u.linearAddr, pParm->u.Pointer.size);
|
---|
275 | }
|
---|
276 | }
|
---|
277 | else
|
---|
278 | Assert(!apvCtx[iParm]);
|
---|
279 | }
|
---|
280 |
|
---|
281 | if ((pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_CANCELLED) == 0)
|
---|
282 | VbglGRFree (&pHGCMCall->header.header);
|
---|
283 | else
|
---|
284 | rc = VERR_INTERRUPTED;
|
---|
285 | }
|
---|
286 |
|
---|
287 | return rc;
|
---|
288 | }
|
---|
289 | # if ARCH_BITS == 64
|
---|
290 | /** @todo merge with the one above (use a header file). Too lazy now. */
|
---|
291 | DECLVBGL(int) VbglHGCMCall32 (VBoxGuestHGCMCallInfo *pCallInfo,
|
---|
292 | VBGLHGCMCALLBACK *pAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
|
---|
293 | {
|
---|
294 | VMMDevHGCMCall *pHGCMCall;
|
---|
295 | uint32_t cbParms;
|
---|
296 | HGCMFunctionParameter32 *pParm;
|
---|
297 | unsigned iParm;
|
---|
298 | int rc;
|
---|
299 |
|
---|
300 | if (!pCallInfo || !pAsyncCallback || pCallInfo->cParms > VBOX_HGCM_MAX_PARMS)
|
---|
301 | {
|
---|
302 | AssertFailed();
|
---|
303 | return VERR_INVALID_PARAMETER;
|
---|
304 | }
|
---|
305 |
|
---|
306 | Log (("VbglHGCMCall: pCallInfo->cParms = %d, pHGCMCall->u32Function = %d\n", pCallInfo->cParms, pCallInfo->u32Function));
|
---|
307 |
|
---|
308 | pHGCMCall = NULL;
|
---|
309 |
|
---|
310 | cbParms = pCallInfo->cParms * sizeof (HGCMFunctionParameter32);
|
---|
311 |
|
---|
312 | /* Allocate request */
|
---|
313 | rc = VbglGRAlloc ((VMMDevRequestHeader **)&pHGCMCall, sizeof (VMMDevHGCMCall) + cbParms, VMMDevReq_HGCMCall32);
|
---|
314 |
|
---|
315 | Log (("VbglHGCMCall Allocated gr %p, rc = %Rrc, cbParms = %d\n", pHGCMCall, rc, cbParms));
|
---|
316 |
|
---|
317 | if (RT_SUCCESS(rc))
|
---|
318 | {
|
---|
319 | void *apvCtx[VBOX_HGCM_MAX_PARMS];
|
---|
320 | memset (apvCtx, 0, sizeof(void *) * pCallInfo->cParms);
|
---|
321 |
|
---|
322 | /* Initialize request memory */
|
---|
323 | pHGCMCall->header.fu32Flags = 0;
|
---|
324 | pHGCMCall->header.result = VINF_SUCCESS;
|
---|
325 |
|
---|
326 | pHGCMCall->u32ClientID = pCallInfo->u32ClientID;
|
---|
327 | pHGCMCall->u32Function = pCallInfo->u32Function;
|
---|
328 | pHGCMCall->cParms = pCallInfo->cParms;
|
---|
329 |
|
---|
330 | if (cbParms)
|
---|
331 | {
|
---|
332 | /* Lock user buffers. */
|
---|
333 | pParm = VBOXGUEST_HGCM_CALL_PARMS32(pCallInfo);
|
---|
334 |
|
---|
335 | for (iParm = 0; iParm < pCallInfo->cParms; iParm++, pParm++)
|
---|
336 | {
|
---|
337 | switch (pParm->type)
|
---|
338 | {
|
---|
339 | case VMMDevHGCMParmType_LinAddr_Locked_In:
|
---|
340 | pParm->type = VMMDevHGCMParmType_LinAddr_In;
|
---|
341 | break;
|
---|
342 | case VMMDevHGCMParmType_LinAddr_Locked_Out:
|
---|
343 | pParm->type = VMMDevHGCMParmType_LinAddr_Out;
|
---|
344 | break;
|
---|
345 | case VMMDevHGCMParmType_LinAddr_Locked:
|
---|
346 | pParm->type = VMMDevHGCMParmType_LinAddr;
|
---|
347 | break;
|
---|
348 |
|
---|
349 | case VMMDevHGCMParmType_LinAddr_In:
|
---|
350 | case VMMDevHGCMParmType_LinAddr_Out:
|
---|
351 | case VMMDevHGCMParmType_LinAddr:
|
---|
352 | /* PORTME: When porting this to Darwin and other systems where the entire kernel isn't mapped
|
---|
353 | into every process, all linear address will have to be converted to physical SG lists at
|
---|
354 | this point. Care must also be taken on these guests to not mix kernel and user addresses
|
---|
355 | in HGCM calls, or we'll end up locking the wrong memory. If VMMDev/HGCM gets a linear address
|
---|
356 | it will assume that it's in the current memory context (i.e. use CR3 to translate it).
|
---|
357 |
|
---|
358 | These kind of problems actually applies to some patched linux kernels too, including older
|
---|
359 | fedora releases. (The patch is the infamous 4G/4G patch, aka 4g4g, by Ingo Molnar.) */
|
---|
360 | rc = vbglLockLinear (&apvCtx[iParm], (void *)pParm->u.Pointer.u.linearAddr, pParm->u.Pointer.size, (pParm->type == VMMDevHGCMParmType_LinAddr_In) ? false : true /* write access */);
|
---|
361 | break;
|
---|
362 | default:
|
---|
363 | /* make gcc happy */
|
---|
364 | break;
|
---|
365 | }
|
---|
366 | if (RT_FAILURE (rc))
|
---|
367 | break;
|
---|
368 | }
|
---|
369 | memcpy (VMMDEV_HGCM_CALL_PARMS32(pHGCMCall), VBOXGUEST_HGCM_CALL_PARMS32(pCallInfo), cbParms);
|
---|
370 | }
|
---|
371 |
|
---|
372 | /* Check that the parameter locking was ok. */
|
---|
373 | if (RT_SUCCESS(rc))
|
---|
374 | {
|
---|
375 | Log (("calling VbglGRPerform\n"));
|
---|
376 |
|
---|
377 | /* Issue request */
|
---|
378 | rc = VbglGRPerform (&pHGCMCall->header.header);
|
---|
379 |
|
---|
380 | Log (("VbglGRPerform rc = %Rrc (header rc=%d)\n", rc, pHGCMCall->header.result));
|
---|
381 |
|
---|
382 | /** If the call failed, but as a result of the request itself, then pretend success
|
---|
383 | * Upper layers will interpret the result code in the packet.
|
---|
384 | */
|
---|
385 | if (RT_FAILURE(rc) && rc == pHGCMCall->header.result)
|
---|
386 | {
|
---|
387 | Assert(pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE);
|
---|
388 | rc = VINF_SUCCESS;
|
---|
389 | }
|
---|
390 |
|
---|
391 | if (RT_SUCCESS(rc))
|
---|
392 | {
|
---|
393 | /* Check if host decides to process the request asynchronously. */
|
---|
394 | if (rc == VINF_HGCM_ASYNC_EXECUTE)
|
---|
395 | {
|
---|
396 | /* Wait for request completion interrupt notification from host */
|
---|
397 | Log (("Processing HGCM call asynchronously\n"));
|
---|
398 | pAsyncCallback (&pHGCMCall->header, pvAsyncData, u32AsyncData);
|
---|
399 | }
|
---|
400 |
|
---|
401 | if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE)
|
---|
402 | {
|
---|
403 | if (cbParms)
|
---|
404 | memcpy (VBOXGUEST_HGCM_CALL_PARMS32(pCallInfo), VMMDEV_HGCM_CALL_PARMS32(pHGCMCall), cbParms);
|
---|
405 |
|
---|
406 | pCallInfo->result = pHGCMCall->header.result;
|
---|
407 | }
|
---|
408 | else
|
---|
409 | {
|
---|
410 | /* The callback returns without completing the request,
|
---|
411 | * that means the wait was interrrupted. That can happen
|
---|
412 | * if the request times out, the system reboots or the
|
---|
413 | * VBoxService ended abnormally.
|
---|
414 | *
|
---|
415 | * Cancel the request, the host will not write to the
|
---|
416 | * memory related to the cancelled request.
|
---|
417 | */
|
---|
418 | Log (("Cancelling HGCM call\n"));
|
---|
419 | pHGCMCall->header.fu32Flags |= VBOX_HGCM_REQ_CANCELLED;
|
---|
420 |
|
---|
421 | pHGCMCall->header.header.requestType = VMMDevReq_HGCMCancel;
|
---|
422 | VbglGRPerform (&pHGCMCall->header.header);
|
---|
423 | }
|
---|
424 | }
|
---|
425 | }
|
---|
426 |
|
---|
427 | /* Unlock user buffers. */
|
---|
428 | pParm = VBOXGUEST_HGCM_CALL_PARMS32(pCallInfo);
|
---|
429 |
|
---|
430 | for (iParm = 0; iParm < pCallInfo->cParms; iParm++, pParm++)
|
---|
431 | {
|
---|
432 | if ( pParm->type == VMMDevHGCMParmType_LinAddr_In
|
---|
433 | || pParm->type == VMMDevHGCMParmType_LinAddr_Out
|
---|
434 | || pParm->type == VMMDevHGCMParmType_LinAddr)
|
---|
435 | {
|
---|
436 | if (apvCtx[iParm] != NULL)
|
---|
437 | {
|
---|
438 | vbglUnlockLinear (apvCtx[iParm], (void *)pParm->u.Pointer.u.linearAddr, pParm->u.Pointer.size);
|
---|
439 | }
|
---|
440 | }
|
---|
441 | else
|
---|
442 | Assert(!apvCtx[iParm]);
|
---|
443 | }
|
---|
444 |
|
---|
445 | if ((pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_CANCELLED) == 0)
|
---|
446 | VbglGRFree (&pHGCMCall->header.header);
|
---|
447 | else
|
---|
448 | rc = VERR_INTERRUPTED;
|
---|
449 | }
|
---|
450 |
|
---|
451 | return rc;
|
---|
452 | }
|
---|
453 | # endif /* ARCH_BITS == 64 */
|
---|
454 |
|
---|
455 | #endif /* VBGL_VBOXGUEST */
|
---|