| 1 | /** @file
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| 2 | * VBox HDD Container, Virtual Disk Image (VDI) API.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006 InnoTek Systemberatung GmbH
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License as published by the Free Software Foundation,
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| 12 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 13 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 14 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * If you received this file as part of a commercial VirtualBox
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| 17 | * distribution, then only the terms of your commercial VirtualBox
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| 18 | * license agreement apply instead of the previous paragraph.
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| 19 | */
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| 20 |
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| 21 | #ifndef __VBox_VBoxHDD_h__
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| 22 | #define __VBox_VBoxHDD_h__
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| 23 |
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| 24 | #include <VBox/cdefs.h>
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| 25 | #include <VBox/types.h>
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| 26 | #include <VBox/param.h>
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| 27 | #include <VBox/pdm.h>
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| 28 | #include <VBox/vmapi.h>
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| 29 |
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| 30 | __BEGIN_DECLS
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| 31 |
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| 32 | #ifdef IN_RING0
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| 33 | # error "There are no VDI APIs available in Ring-0 Host Context!"
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| 34 | #endif
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| 35 |
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| 36 | /** @defgroup grp_vbox_hdd VBox HDD Container
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| 37 | * @{
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| 38 | */
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| 39 |
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| 40 | /** Image info, not handled anyhow.
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| 41 | * Must be less than 64 bytes in length, including the trailing 0.
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| 42 | */
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| 43 | #define VDI_IMAGE_FILE_INFO "<<< InnoTek VirtualBox Disk Image >>>\n"
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| 44 |
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| 45 | /** Current image major version. */
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| 46 | #define VDI_IMAGE_VERSION_MAJOR (0x0001)
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| 47 | /** Current image minor version. */
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| 48 | #define VDI_IMAGE_VERSION_MINOR (0x0001)
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| 49 | /** Current image version. */
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| 50 | #define VDI_IMAGE_VERSION ((VDI_IMAGE_VERSION_MAJOR << 16) | VDI_IMAGE_VERSION_MINOR)
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| 51 |
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| 52 | /** Get major version from combined version. */
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| 53 | #define VDI_GET_VERSION_MAJOR(uVer) ((uVer) >> 16)
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| 54 | /** Get minor version from combined version. */
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| 55 | #define VDI_GET_VERSION_MINOR(uVer) ((uVer) & 0xffff)
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| 56 |
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| 57 | /** @name VDI image types
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| 58 | * @{ */
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| 59 | typedef enum VDIIMAGETYPE
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| 60 | {
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| 61 | /** Normal dynamically growing base image file. */
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| 62 | VDI_IMAGE_TYPE_NORMAL = 1,
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| 63 | /** Preallocated base image file of a fixed size. */
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| 64 | VDI_IMAGE_TYPE_FIXED,
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| 65 | /** Dynamically growing image file for undo/commit changes support. */
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| 66 | VDI_IMAGE_TYPE_UNDO,
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| 67 | /** Dynamically growing image file for differencing support. */
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| 68 | VDI_IMAGE_TYPE_DIFF,
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| 69 |
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| 70 | /** First valid image type value. */
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| 71 | VDI_IMAGE_TYPE_FIRST = VDI_IMAGE_TYPE_NORMAL,
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| 72 | /** Last valid image type value. */
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| 73 | VDI_IMAGE_TYPE_LAST = VDI_IMAGE_TYPE_DIFF
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| 74 | } VDIIMAGETYPE;
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| 75 | /** Pointer to VDI image type. */
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| 76 | typedef VDIIMAGETYPE *PVDIIMAGETYPE;
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| 77 | /** @} */
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| 78 |
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| 79 | /** @name VDI image flags
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| 80 | * @{ */
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| 81 | /** No flags. */
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| 82 | #define VDI_IMAGE_FLAGS_NONE (0x00)
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| 83 | /** Fill new blocks with zeroes while expanding image file. */
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| 84 | #define VDI_IMAGE_FLAGS_ZERO_EXPAND (0x01)
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| 85 |
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| 86 | /** Mask of valid image flags. */
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| 87 | #define VDI_IMAGE_FLAGS_MASK (VDI_IMAGE_FLAGS_NONE | VDI_IMAGE_FLAGS_ZERO_EXPAND)
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| 88 |
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| 89 | /** Default image flags. */
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| 90 | #define VDI_IMAGE_FLAGS_DEFAULT (VDI_IMAGE_FLAGS_NONE)
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| 91 | /** @} */
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| 92 |
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| 93 | /** @name VDI image open mode flags
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| 94 | * @{
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| 95 | */
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| 96 | /** Try to open image in read/write exclusive access mode if possible, or in read-only elsewhere. */
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| 97 | #define VDI_OPEN_FLAGS_NORMAL (0)
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| 98 | /** Open image in read-only mode with sharing access with others. */
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| 99 | #define VDI_OPEN_FLAGS_READONLY (1)
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| 100 | /** Mask of valid flags. */
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| 101 | #define VDI_OPEN_FLAGS_MASK (VDI_OPEN_FLAGS_NORMAL | VDI_OPEN_FLAGS_READONLY)
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| 102 | /** @}*/
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| 103 |
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| 104 | /**
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| 105 | * VBox VDI disk Container main structure.
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| 106 | */
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| 107 | /* Forward declaration, VDIDISK structure is visible only inside VDI module. */
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| 108 | struct VDIDISK;
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| 109 | typedef struct VDIDISK VDIDISK;
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| 110 | typedef VDIDISK *PVDIDISK;
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| 111 |
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| 112 | /**
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| 113 | * Creates a new base image file.
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| 114 | *
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| 115 | * @returns VBox status code.
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| 116 | * @param pszFilename Name of the image file to create.
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| 117 | * @param enmType Image type, only base image types are acceptable.
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| 118 | * @param cbSize Image size in bytes.
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| 119 | * @param pszComment Pointer to image comment. NULL is ok.
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| 120 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 121 | * @param pvUser User argument for the progress callback.
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| 122 | */
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| 123 | IDER3DECL(int) VDICreateBaseImage(const char *pszFilename, VDIIMAGETYPE enmType, uint64_t cbSize, const char *pszComment,
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| 124 | PFNVMPROGRESS pfnProgress, void *pvUser);
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| 125 |
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| 126 | /**
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| 127 | * Creates a differencing dynamically growing image file for specified parent image.
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| 128 | *
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| 129 | * @returns VBox status code.
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| 130 | * @param pszFilename Name of the differencing image file to create.
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| 131 | * @param pszParent Name of the parent image file. May be base or diff image type.
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| 132 | * @param pszComment Pointer to image comment. NULL is ok.
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| 133 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 134 | * @param pvUser User argument for the progress callback.
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| 135 | */
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| 136 | IDER3DECL(int) VDICreateDifferenceImage(const char *pszFilename, const char *pszParent, const char *pszComment,
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| 137 | PFNVMPROGRESS pfnProgress, void *pvUser);
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| 138 |
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| 139 | /**
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| 140 | * Checks if image is available and not broken, returns some useful image parameters if requested.
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| 141 | *
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| 142 | * @returns VBox status code.
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| 143 | * @param pszFilename Name of the image file to check.
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| 144 | * @param puVersion Where to store the version of image. NULL is ok.
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| 145 | * @param penmType Where to store the type of image. NULL is ok.
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| 146 | * @param pcbSize Where to store the size of image in bytes. NULL is ok.
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| 147 | * @param pUuid Where to store the uuid of image creation. NULL is ok.
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| 148 | * @param pParentUuid Where to store the uuid of the parent image (if any). NULL is ok.
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| 149 | * @param pszComment Where to store the comment string of image. NULL is ok.
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| 150 | * @param cbComment The size of pszComment buffer. 0 is ok.
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| 151 | */
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| 152 | IDER3DECL(int) VDICheckImage(const char *pszFilename,
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| 153 | unsigned *puVersion,
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| 154 | PVDIIMAGETYPE penmType,
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| 155 | uint64_t *pcbSize,
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| 156 | PRTUUID pUuid,
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| 157 | PRTUUID pParentUuid,
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| 158 | char *pszComment,
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| 159 | unsigned cbComment);
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| 160 |
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| 161 | /**
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| 162 | * Changes an image's comment string.
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| 163 | *
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| 164 | * @returns VBox status code.
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| 165 | * @param pszFilename Name of the image file to operate on.
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| 166 | * @param pszComment New comment string (UTF-8). NULL is allowed to reset the comment.
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| 167 | */
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| 168 | IDER3DECL(int) VDISetImageComment(const char *pszFilename, const char *pszComment);
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| 169 |
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| 170 | /**
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| 171 | * Deletes a valid image file. Fails if specified file is not an image.
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| 172 | *
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| 173 | * @returns VBox status code.
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| 174 | * @param pszFilename Name of the image file to check.
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| 175 | */
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| 176 | IDER3DECL(int) VDIDeleteImage(const char *pszFilename);
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| 177 |
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| 178 | /**
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| 179 | * Makes a copy of image file with a new (other) creation uuid.
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| 180 | *
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| 181 | * @returns VBox status code.
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| 182 | * @param pszDstFilename Name of the image file to create.
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| 183 | * @param pszSrcFilename Name of the image file to copy from.
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| 184 | * @param pszComment Pointer to image comment. If NULL, the comment
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| 185 | * will be copied from the source image.
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| 186 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 187 | * @param pvUser User argument for the progress callback.
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| 188 | */
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| 189 | IDER3DECL(int) VDICopyImage(const char *pszDstFilename, const char *pszSrcFilename, const char *pszComment,
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| 190 | PFNVMPROGRESS pfnProgress, void *pvUser);
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| 191 |
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| 192 | /**
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| 193 | * Converts image file from older VDI formats to current one.
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| 194 | *
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| 195 | * @returns VBox status code.
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| 196 | * @param pszFilename Name of the image file to convert.
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| 197 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 198 | * @param pvUser User argument for the progress callback.
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| 199 | */
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| 200 | IDER3DECL(int) VDIConvertImage(const char *pszFilename, PFNVMPROGRESS pfnProgress, void *pvUser);
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| 201 |
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| 202 | /**
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| 203 | * Shrinks growing image file by removing zeroed data blocks.
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| 204 | *
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| 205 | * @returns VBox status code.
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| 206 | * @param pszFilename Name of the image file to shrink.
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| 207 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 208 | * @param pvUser User argument for the progress callback.
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| 209 | */
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| 210 | IDER3DECL(int) VDIShrinkImage(const char *pszFilename, PFNVMPROGRESS pfnProgress, void *pvUser);
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| 211 |
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| 212 | /**
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| 213 | * Queries the image's UUID and parent UUIDs.
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| 214 | *
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| 215 | * @returns VBox status code.
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| 216 | * @param pszFilename Name of the image file to operate on.
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| 217 | * @param pUuid Where to store image UUID (can be NULL).
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| 218 | * @param pModificationUuid Where to store modification UUID (can be NULL).
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| 219 | * @param pParentUuuid Where to store parent UUID (can be NULL).
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| 220 | * @param pParentModificationUuid Where to store parent modification UUID (can be NULL).
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| 221 | */
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| 222 | IDER3DECL(int) VDIGetImageUUIDs(const char *pszFilename,
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| 223 | PRTUUID pUuid, PRTUUID pModificationUuid,
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| 224 | PRTUUID pParentUuid, PRTUUID pParentModificationUuid);
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| 225 |
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| 226 |
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| 227 | /**
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| 228 | * Changes the image's UUID and parent UUIDs.
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| 229 | *
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| 230 | * @returns VBox status code.
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| 231 | * @param pszFilename Name of the image file to operate on.
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| 232 | * @param pUuid Optional parameter, new UUID of the image.
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| 233 | * @param pModificationUuid Optional parameter, new modification UUID of the image.
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| 234 | * @param pParentUuuid Optional parameter, new parent UUID of the image.
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| 235 | * @param pParentModificationUuid Optional parameter, new parent modification UUID of the image.
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| 236 | */
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| 237 | IDER3DECL(int) VDISetImageUUIDs(const char *pszFilename,
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| 238 | PCRTUUID pUuid, PCRTUUID pModificationUuid,
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| 239 | PCRTUUID pParentUuid, PCRTUUID pParentModificationUuid);
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| 240 |
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| 241 | /**
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| 242 | * Merges two images having a parent/child relationship (both directions).
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| 243 | *
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| 244 | * @returns VBox status code.
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| 245 | * @param pszFilenameFrom Name of the image file to merge from.
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| 246 | * @param pszFilenameTo Name of the image file to merge into.
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| 247 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 248 | * @param pvUser User argument for the progress callback.
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| 249 | */
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| 250 | IDER3DECL(int) VDIMergeImage(const char *pszFilenameFrom, const char *pszFilenameTo,
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| 251 | PFNVMPROGRESS pfnProgress, void *pvUser);
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| 252 |
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| 253 |
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| 254 | /**
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| 255 | * Allocates and initializes an empty VDI HDD container.
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| 256 | * No image files are opened.
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| 257 | *
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| 258 | * @returns Pointer to newly created empty HDD container.
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| 259 | * @returns NULL on failure, typically out of memory.
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| 260 | */
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| 261 | IDER3DECL(PVDIDISK) VDIDiskCreate(void);
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| 262 |
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| 263 | /**
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| 264 | * Destroys the VDI HDD container. If container has opened image files they will be closed.
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| 265 | *
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| 266 | * @param pDisk Pointer to VDI HDD container.
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| 267 | */
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| 268 | IDER3DECL(void) VDIDiskDestroy(PVDIDISK pDisk);
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| 269 |
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| 270 | /**
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| 271 | * Opens an image file.
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| 272 | *
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| 273 | * The first opened image file in a HDD container must have a base image type,
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| 274 | * others (next opened images) must be a differencing or undo images.
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| 275 | * Linkage is checked for differencing image to be in consistence with the previously opened image.
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| 276 | * When a next differencing image is opened and the last image was opened in read/write access
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| 277 | * mode, then the last image is reopened in read-only with deny write sharing mode. This allows
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| 278 | * other processes to use images in read-only mode too.
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| 279 | *
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| 280 | * Note that the image can be opened in read-only mode if a read/write open is not possible.
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| 281 | * Use VDIDiskIsReadOnly to check open mode.
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| 282 | *
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| 283 | * @returns VBox status code.
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| 284 | * @param pDisk Pointer to VDI HDD container.
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| 285 | * @param pszFilename Name of the image file to open.
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| 286 | * @param fOpen Image file open mode, see VDI_OPEN_FLAGS_* constants.
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| 287 | */
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| 288 | IDER3DECL(int) VDIDiskOpenImage(PVDIDISK pDisk, const char *pszFilename, unsigned fOpen);
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| 289 |
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| 290 | /**
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| 291 | * Creates and opens a new differencing image file in HDD container.
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| 292 | * See comments for VDIDiskOpenImage function about differencing images.
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| 293 | *
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| 294 | * @returns VBox status code.
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| 295 | * @param pDisk Pointer to VDI HDD container.
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| 296 | * @param pszFilename Name of the image file to create and open.
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| 297 | * @param pszComment Pointer to image comment. NULL is ok.
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| 298 | * @param pfnProgress Progress callback. Optional. NULL if not to be used.
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| 299 | * @param pvUser User argument for the progress callback.
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| 300 | */
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| 301 | IDER3DECL(int) VDIDiskCreateOpenDifferenceImage(PVDIDISK pDisk, const char *pszFilename, const char *pszComment,
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| 302 | PFNVMPROGRESS pfnProgress, void *pvUser);
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| 303 |
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| 304 | /**
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| 305 | * Closes the last opened image file in the HDD container. Leaves all changes inside it.
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| 306 | * If previous image file was opened in read-only mode (that is normal) and closing image
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| 307 | * was opened in read-write mode (the whole disk was in read-write mode) - the previous image
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| 308 | * will be reopened in read/write mode.
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| 309 | *
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| 310 | * @param pDisk Pointer to VDI HDD container.
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| 311 | */
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| 312 | IDER3DECL(void) VDIDiskCloseImage(PVDIDISK pDisk);
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| 313 |
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| 314 | /**
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| 315 | * Closes all opened image files in HDD container.
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| 316 | *
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| 317 | * @param pDisk Pointer to VDI HDD container.
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| 318 | */
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| 319 | IDER3DECL(void) VDIDiskCloseAllImages(PVDIDISK pDisk);
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| 320 |
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| 321 | /**
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| 322 | * Commits last opened differencing/undo image file of the HDD container to previous image.
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| 323 | * If the previous image file was opened in read-only mode (that must be always so) it is reopened
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| 324 | * as read/write to do commit operation.
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| 325 | * After successfull commit the previous image file again reopened in read-only mode, last opened
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| 326 | * image file is cleared of data and remains open and active in HDD container.
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| 327 | * If you want to delete image after commit you must do it manually by VDIDiskCloseImage and
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| 328 | * VDIDeleteImage calls.
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| 329 | *
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| 330 | * Note that in case of unrecoverable error all images of HDD container will be closed.
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| 331 | *
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| 332 | * @returns VBox status code.
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| 333 | * @param pDisk Pointer to VDI HDD container.
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| 334 | * @param pfnProgress Progress callback. Optional.
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| 335 | * @param pvUser User argument for the progress callback.
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| 336 | */
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| 337 | IDER3DECL(int) VDIDiskCommitLastDiff(PVDIDISK pDisk, PFNVMPROGRESS pfnProgress, void *pvUser);
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| 338 |
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| 339 | /**
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| 340 | * Get read/write mode of VDI HDD.
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| 341 | *
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| 342 | * @returns Disk ReadOnly status.
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| 343 | * @returns true if no one VDI image is opened in HDD container.
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| 344 | */
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| 345 | IDER3DECL(bool) VDIDiskIsReadOnly(PVDIDISK pDisk);
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| 346 |
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| 347 | /**
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| 348 | * Get total disk size of the VDI HDD container.
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| 349 | *
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| 350 | * @returns Virtual disk size in bytes.
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| 351 | * @returns 0 if no one VDI image is opened in HDD container.
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| 352 | */
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| 353 | IDER3DECL(uint64_t) VDIDiskGetSize(PVDIDISK pDisk);
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| 354 |
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| 355 | /**
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| 356 | * Get block size of the VDI HDD container.
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| 357 | *
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| 358 | * @returns VDI image block size in bytes.
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| 359 | * @returns 0 if no one VDI image is opened in HDD container.
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| 360 | */
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| 361 | IDER3DECL(unsigned) VDIDiskGetBlockSize(PVDIDISK pDisk);
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| 362 |
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| 363 | /**
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| 364 | * Get working buffer size of the VDI HDD container.
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| 365 | *
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| 366 | * @returns Working buffer size in bytes.
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| 367 | */
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| 368 | IDER3DECL(unsigned) VDIDiskGetBufferSize(PVDIDISK pDisk);
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| 369 |
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| 370 | /**
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| 371 | * Get virtual disk geometry stored in image file.
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| 372 | *
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| 373 | * @returns VBox status code.
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| 374 | * @returns VERR_VDI_NOT_OPENED if no one VDI image is opened in HDD container.
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| 375 | * @returns VERR_VDI_GEOMETRY_NOT_SET if no geometry present in the HDD container.
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| 376 | * @param pDisk Pointer to VDI HDD container.
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| 377 | * @param pcCylinders Where to store the number of cylinders. NULL is ok.
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| 378 | * @param pcHeads Where to store the number of heads. NULL is ok.
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| 379 | * @param pcSectors Where to store the number of sectors. NULL is ok.
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| 380 | */
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| 381 | IDER3DECL(int) VDIDiskGetGeometry(PVDIDISK pDisk, unsigned *pcCylinders, unsigned *pcHeads, unsigned *pcSectors);
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| 382 |
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| 383 | /**
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| 384 | * Store virtual disk geometry into base image file of HDD container.
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| 385 | *
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| 386 | * Note that in case of unrecoverable error all images of HDD container will be closed.
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| 387 | *
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| 388 | * @returns VBox status code.
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| 389 | * @returns VERR_VDI_NOT_OPENED if no one VDI image is opened in HDD container.
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| 390 | * @param pDisk Pointer to VDI HDD container.
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| 391 | * @param cCylinders Number of cylinders.
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| 392 | * @param cHeads Number of heads.
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| 393 | * @param cSectors Number of sectors.
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| 394 | */
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| 395 | IDER3DECL(int) VDIDiskSetGeometry(PVDIDISK pDisk, unsigned cCylinders, unsigned cHeads, unsigned cSectors);
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| 396 |
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| 397 | /**
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| 398 | * Get virtual disk translation mode stored in image file.
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| 399 | *
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| 400 | * @returns VBox status code.
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| 401 | * @returns VERR_VDI_NOT_OPENED if no one VDI image is opened in HDD container.
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| 402 | * @param pDisk Pointer to VDI HDD container.
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| 403 | * @param penmTranslation Where to store the translation mode (see pdm.h).
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| 404 | */
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| 405 | IDER3DECL(int) VDIDiskGetTranslation(PVDIDISK pDisk, PPDMBIOSTRANSLATION penmTranslation);
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| 406 |
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| 407 | /**
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| 408 | * Store virtual disk translation mode into base image file of HDD container.
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| 409 | *
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| 410 | * Note that in case of unrecoverable error all images of HDD container will be closed.
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| 411 | *
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| 412 | * @returns VBox status code.
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| 413 | * @returns VERR_VDI_NOT_OPENED if no one VDI image is opened in HDD container.
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| 414 | * @param pDisk Pointer to VDI HDD container.
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| 415 | * @param enmTranslation Translation mode (see pdm.h).
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| 416 | */
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| 417 | IDER3DECL(int) VDIDiskSetTranslation(PVDIDISK pDisk, PDMBIOSTRANSLATION enmTranslation);
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| 418 |
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| 419 | /**
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| 420 | * Get number of opened images in HDD container.
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| 421 | *
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| 422 | * @returns Number of opened images for HDD container. 0 if no images has been opened.
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| 423 | * @param pDisk Pointer to VDI HDD container.
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| 424 | */
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| 425 | IDER3DECL(int) VDIDiskGetImagesCount(PVDIDISK pDisk);
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| 426 |
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| 427 | /**
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| 428 | * Get version of opened image of HDD container.
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| 429 | *
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| 430 | * @returns VBox status code.
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| 431 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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| 432 | * @param pDisk Pointer to VDI HDD container.
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| 433 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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| 434 | * @param puVersion Where to store the image version.
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| 435 | */
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| 436 | IDER3DECL(int) VDIDiskGetImageVersion(PVDIDISK pDisk, int nImage, unsigned *puVersion);
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| 437 |
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| 438 | /**
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| 439 | * Get type of opened image of HDD container.
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| 440 | *
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| 441 | * @returns VBox status code.
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| 442 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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| 443 | * @param pDisk Pointer to VDI HDD container.
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| 444 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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| 445 | * @param penmType Where to store the image type.
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| 446 | */
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| 447 | IDER3DECL(int) VDIDiskGetImageType(PVDIDISK pDisk, int nImage, PVDIIMAGETYPE penmType);
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| 448 |
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| 449 | /**
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| 450 | * Get flags of opened image of HDD container.
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| 451 | *
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| 452 | * @returns VBox status code.
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| 453 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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| 454 | * @param pDisk Pointer to VDI HDD container.
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| 455 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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| 456 | * @param pfFlags Where to store the image flags.
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| 457 | */
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| 458 | IDER3DECL(int) VDIDiskGetImageFlags(PVDIDISK pDisk, int nImage, unsigned *pfFlags);
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| 459 |
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| 460 | /**
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|---|
| 461 | * Get filename of opened image of HDD container.
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|---|
| 462 | *
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| 463 | * @returns VBox status code.
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|---|
| 464 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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| 465 | * @returns VERR_BUFFER_OVERFLOW if pszFilename buffer too small to hold filename.
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| 466 | * @param pDisk Pointer to VDI HDD container.
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| 467 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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| 468 | * @param pszFilename Where to store the image file name.
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| 469 | * @param cbFilename Size of buffer pszFilename points to.
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| 470 | */
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| 471 | IDER3DECL(int) VDIDiskGetImageFilename(PVDIDISK pDisk, int nImage, char *pszFilename, unsigned cbFilename);
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| 472 |
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| 473 | /**
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|---|
| 474 | * Get the comment line of opened image of HDD container.
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|---|
| 475 | *
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|---|
| 476 | * @returns VBox status code.
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|---|
| 477 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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|---|
| 478 | * @returns VERR_BUFFER_OVERFLOW if pszComment buffer too small to hold comment text.
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| 479 | * @param pDisk Pointer to VDI HDD container.
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|---|
| 480 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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|---|
| 481 | * @param pszComment Where to store the comment string of image. NULL is ok.
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|---|
| 482 | * @param cbComment The size of pszComment buffer. 0 is ok.
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|---|
| 483 | */
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|---|
| 484 | IDER3DECL(int) VDIDiskGetImageComment(PVDIDISK pDisk, int nImage, char *pszComment, unsigned cbComment);
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|---|
| 485 |
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|---|
| 486 | /**
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|---|
| 487 | * Get Uuid of opened image of HDD container.
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|---|
| 488 | *
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|---|
| 489 | * @returns VBox status code.
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|---|
| 490 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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|---|
| 491 | * @param pDisk Pointer to VDI HDD container.
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|---|
| 492 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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|---|
| 493 | * @param pUuid Where to store the image creation uuid.
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|---|
| 494 | */
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|---|
| 495 | IDER3DECL(int) VDIDiskGetImageUuid(PVDIDISK pDisk, int nImage, PRTUUID pUuid);
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|---|
| 496 |
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|---|
| 497 | /**
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|---|
| 498 | * Get last modification Uuid of opened image of HDD container.
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|---|
| 499 | *
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|---|
| 500 | * @returns VBox status code.
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|---|
| 501 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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|---|
| 502 | * @param pDisk Pointer to VDI HDD container.
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|---|
| 503 | * @param nImage Image number, counts from 0. 0 is always base image of container.
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|---|
| 504 | * @param pUuid Where to store the image modification uuid.
|
|---|
| 505 | */
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|---|
| 506 | IDER3DECL(int) VDIDiskGetImageModificationUuid(PVDIDISK pDisk, int nImage, PRTUUID pUuid);
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|---|
| 507 |
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|---|
| 508 | /**
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|---|
| 509 | * Get Uuid of opened image's parent image.
|
|---|
| 510 | *
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|---|
| 511 | * @returns VBox status code.
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|---|
| 512 | * @returns VERR_VDI_IMAGE_NOT_FOUND if image with specified number was not opened.
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|---|
| 513 | * @param pDisk Pointer to VDI HDD container.
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|---|
| 514 | * @param nImage Image number, counts from 0. 0 is always base image of the container.
|
|---|
| 515 | * @param pUuid Where to store the image creation uuid.
|
|---|
| 516 | */
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|---|
| 517 | IDER3DECL(int) VDIDiskGetParentImageUuid(PVDIDISK pDisk, int nImage, PRTUUID pUuid);
|
|---|
| 518 |
|
|---|
| 519 | /**
|
|---|
| 520 | * Read data from virtual HDD.
|
|---|
| 521 | *
|
|---|
| 522 | * @returns VBox status code.
|
|---|
| 523 | * @param pDisk Pointer to VDI HDD container.
|
|---|
| 524 | * @param offStart Offset of first reading byte from start of disk.
|
|---|
| 525 | * @param pvBuf Pointer to buffer for reading data.
|
|---|
| 526 | * @param cbToRead Number of bytes to read.
|
|---|
| 527 | */
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|---|
| 528 | IDER3DECL(int) VDIDiskRead(PVDIDISK pDisk, uint64_t offStart, void *pvBuf, unsigned cbToRead);
|
|---|
| 529 |
|
|---|
| 530 | /**
|
|---|
| 531 | * Write data to virtual HDD.
|
|---|
| 532 | *
|
|---|
| 533 | * @returns VBox status code.
|
|---|
| 534 | * @param pDisk Pointer to VDI HDD container.
|
|---|
| 535 | * @param offStart Offset of first writing byte from start of HDD.
|
|---|
| 536 | * @param pvBuf Pointer to buffer of writing data.
|
|---|
| 537 | * @param cbToWrite Number of bytes to write.
|
|---|
| 538 | */
|
|---|
| 539 | IDER3DECL(int) VDIDiskWrite(PVDIDISK pDisk, uint64_t offStart, const void *pvBuf, unsigned cbToWrite);
|
|---|
| 540 |
|
|---|
| 541 |
|
|---|
| 542 |
|
|---|
| 543 | /**
|
|---|
| 544 | * Debug helper - dumps all opened images of HDD container into the log file.
|
|---|
| 545 | *
|
|---|
| 546 | * @param pDisk Pointer to VDI HDD container.
|
|---|
| 547 | */
|
|---|
| 548 | IDER3DECL(void) VDIDiskDumpImages(PVDIDISK pDisk);
|
|---|
| 549 |
|
|---|
| 550 | __END_DECLS
|
|---|
| 551 |
|
|---|
| 552 | /** @} */
|
|---|
| 553 |
|
|---|
| 554 | #endif
|
|---|
