1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* $Id: VBoxGuestR3LibGR.cpp $ */
/** @file
* VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, GR.
*/
/*
* Copyright (C) 2007-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/mem.h>
#include <iprt/assert.h>
#include <iprt/string.h>
#include <iprt/errcore.h>
#include "VBoxGuestR3LibInternal.h"
int vbglR3GRAlloc(VMMDevRequestHeader **ppReq, size_t cb, VMMDevRequestType enmReqType)
{
VMMDevRequestHeader *pReq;
AssertPtrReturn(ppReq, VERR_INVALID_PARAMETER);
AssertMsgReturn(cb >= sizeof(VMMDevRequestHeader) && cb < _1G, ("%#zx vs %#zx\n", cb, sizeof(VMMDevRequestHeader)),
VERR_INVALID_PARAMETER);
pReq = (VMMDevRequestHeader *)RTMemTmpAlloc(cb);
if (RT_LIKELY(pReq))
{
pReq->size = (uint32_t)cb;
pReq->version = VMMDEV_REQUEST_HEADER_VERSION;
pReq->requestType = enmReqType;
pReq->rc = VERR_GENERAL_FAILURE;
pReq->reserved1 = 0;
pReq->fRequestor = 0;
*ppReq = pReq;
return VINF_SUCCESS;
}
return VERR_NO_MEMORY;
}
int vbglR3GRPerform(VMMDevRequestHeader *pReq)
{
PVBGLREQHDR pReqHdr = (PVBGLREQHDR)pReq;
uint32_t const cbReq = pReqHdr->cbIn;
Assert(pReqHdr->cbOut == 0 || pReqHdr->cbOut == cbReq);
pReqHdr->cbOut = cbReq;
if (pReq->size < _1K)
return vbglR3DoIOCtl(VBGL_IOCTL_VMMDEV_REQUEST(cbReq), pReqHdr, cbReq);
return vbglR3DoIOCtl(VBGL_IOCTL_VMMDEV_REQUEST_BIG, pReqHdr, cbReq);
}
void vbglR3GRFree(VMMDevRequestHeader *pReq)
{
RTMemTmpFree(pReq);
}
|
