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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/** @file
*
* VBox HDD container test utility, memory disk/file.
*/
/*
* Copyright (C) 2011-2022 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef VBOX_INCLUDED_SRC_testcase_VDMemDisk_h
#define VBOX_INCLUDED_SRC_testcase_VDMemDisk_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/sg.h>
/** Handle to the a memory disk. */
typedef struct VDMEMDISK *PVDMEMDISK;
/** Pointer to a memory disk handle. */
typedef PVDMEMDISK *PPVDMEMDISK;
/**
* Creates a new memory disk with the given size.
*
* @returns VBOX status code.
*
* @param ppMemDisk Where to store the memory disk handle.
* @param cbSize Size of the disk if it is fixed.
* If 0 the disk grows when it is written to
* and the size can be changed with
* VDMemDiskSetSize().
*/
int VDMemDiskCreate(PPVDMEMDISK ppMemDisk, uint64_t cbSize);
/**
* Destroys a memory disk.
*
* @returns nothing.
*
* @param pMemDisk The memory disk to destroy.
*/
void VDMemDiskDestroy(PVDMEMDISK pMemDisk);
/**
* Writes the specified amount of data from the S/G buffer at
* the given offset.
*
* @returns VBox status code.
*
* @param pMemDisk The memory disk handle.
* @param off Where to start writing to.
* @param cbWrite How many bytes to write.
* @param pSgBuf The S/G buffer to write from.
*/
int VDMemDiskWrite(PVDMEMDISK pMemDisk, uint64_t off, size_t cbWrite, PRTSGBUF pSgBuf);
/**
* Reads the specified amount of data into the S/G buffer
* starting from the given offset.
*
* @returns VBox status code.
*
* @param pMemDisk The memory disk handle.
* @param off Where to start reading from.
* @param cbRead The amount of bytes to read.
* @param pSgBuf The S/G buffer to read into.
*/
int VDMemDiskRead(PVDMEMDISK pMemDisk, uint64_t off, size_t cbRead, PRTSGBUF pSgBuf);
/**
* Sets the size of the memory disk.
*
* @returns VBox status code.
*
* @param pMemDisk The memory disk handle.
* @param cbSize The new size to set.
*/
int VDMemDiskSetSize(PVDMEMDISK pMemDisk, uint64_t cbSize);
/**
* Gets the current size of the memory disk.
*
* @returns VBox status code.
*
* @param pMemDisk The memory disk handle.
* @param pcbSize Where to store the size of the memory
* disk.
*/
int VDMemDiskGetSize(PVDMEMDISK pMemDisk, uint64_t *pcbSize);
/**
* Dumps the memory disk to a file.
*
* @returns VBox status code.
*
* @param pMemDisk The memory disk handle.
* @param pcszFilename Where to dump the content.
*/
int VDMemDiskWriteToFile(PVDMEMDISK pMemDisk, const char *pcszFilename);
/**
* Reads the content of a file into the given memory disk.
* All data stored in the memory disk will be overwritten.
*
* @returns VBox status code.
*
* @param pMemDisk The memory disk handle.
* @param pcszFilename The file to load from.
*/
int VDMemDiskReadFromFile(PVDMEMDISK pMemDisk, const char *pcszFilename);
/**
* Compares the given range of the memory disk with a provided S/G buffer.
*
* @returns whatever memcmp returns.
*
* @param pMemDisk The memory disk handle.
* @param off Where to start comparing.
* @param cbCmp How many bytes to compare.
* @param pSgBuf The S/G buffer to compare with.
*/
int VDMemDiskCmp(PVDMEMDISK pMemDisk, uint64_t off, size_t cbCmp, PRTSGBUF pSgBuf);
#endif /* !VBOX_INCLUDED_SRC_testcase_VDMemDisk_h */
|
