1 | /* $Id: VMDK.cpp 67744 2017-07-01 11:25:32Z vboxsync $ */
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2 | /** @file
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3 | * VMDK disk image, core code.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2016 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 |
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19 | /*********************************************************************************************************************************
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20 | * Header Files *
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21 | *********************************************************************************************************************************/
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22 | #define LOG_GROUP LOG_GROUP_VD_VMDK
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23 | #include <VBox/vd-plugin.h>
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24 | #include <VBox/err.h>
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25 |
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26 | #include <VBox/log.h>
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27 | #include <iprt/assert.h>
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28 | #include <iprt/alloc.h>
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29 | #include <iprt/uuid.h>
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30 | #include <iprt/path.h>
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31 | #include <iprt/string.h>
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32 | #include <iprt/rand.h>
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33 | #include <iprt/zip.h>
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34 | #include <iprt/asm.h>
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35 |
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36 | #include "VDBackends.h"
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37 |
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38 |
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39 | /*********************************************************************************************************************************
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40 | * Constants And Macros, Structures and Typedefs *
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41 | *********************************************************************************************************************************/
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42 |
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43 | /** Maximum encoded string size (including NUL) we allow for VMDK images.
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44 | * Deliberately not set high to avoid running out of descriptor space. */
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45 | #define VMDK_ENCODED_COMMENT_MAX 1024
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46 |
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47 | /** VMDK descriptor DDB entry for PCHS cylinders. */
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48 | #define VMDK_DDB_GEO_PCHS_CYLINDERS "ddb.geometry.cylinders"
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49 |
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50 | /** VMDK descriptor DDB entry for PCHS heads. */
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51 | #define VMDK_DDB_GEO_PCHS_HEADS "ddb.geometry.heads"
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52 |
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53 | /** VMDK descriptor DDB entry for PCHS sectors. */
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54 | #define VMDK_DDB_GEO_PCHS_SECTORS "ddb.geometry.sectors"
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55 |
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56 | /** VMDK descriptor DDB entry for LCHS cylinders. */
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57 | #define VMDK_DDB_GEO_LCHS_CYLINDERS "ddb.geometry.biosCylinders"
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58 |
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59 | /** VMDK descriptor DDB entry for LCHS heads. */
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60 | #define VMDK_DDB_GEO_LCHS_HEADS "ddb.geometry.biosHeads"
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61 |
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62 | /** VMDK descriptor DDB entry for LCHS sectors. */
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63 | #define VMDK_DDB_GEO_LCHS_SECTORS "ddb.geometry.biosSectors"
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64 |
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65 | /** VMDK descriptor DDB entry for image UUID. */
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66 | #define VMDK_DDB_IMAGE_UUID "ddb.uuid.image"
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67 |
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68 | /** VMDK descriptor DDB entry for image modification UUID. */
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69 | #define VMDK_DDB_MODIFICATION_UUID "ddb.uuid.modification"
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70 |
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71 | /** VMDK descriptor DDB entry for parent image UUID. */
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72 | #define VMDK_DDB_PARENT_UUID "ddb.uuid.parent"
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73 |
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74 | /** VMDK descriptor DDB entry for parent image modification UUID. */
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75 | #define VMDK_DDB_PARENT_MODIFICATION_UUID "ddb.uuid.parentmodification"
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76 |
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77 | /** No compression for streamOptimized files. */
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78 | #define VMDK_COMPRESSION_NONE 0
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79 |
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80 | /** Deflate compression for streamOptimized files. */
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81 | #define VMDK_COMPRESSION_DEFLATE 1
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82 |
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83 | /** Marker that the actual GD value is stored in the footer. */
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84 | #define VMDK_GD_AT_END 0xffffffffffffffffULL
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85 |
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86 | /** Marker for end-of-stream in streamOptimized images. */
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87 | #define VMDK_MARKER_EOS 0
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88 |
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89 | /** Marker for grain table block in streamOptimized images. */
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90 | #define VMDK_MARKER_GT 1
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91 |
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92 | /** Marker for grain directory block in streamOptimized images. */
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93 | #define VMDK_MARKER_GD 2
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94 |
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95 | /** Marker for footer in streamOptimized images. */
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96 | #define VMDK_MARKER_FOOTER 3
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97 |
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98 | /** Marker for unknown purpose in streamOptimized images.
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99 | * Shows up in very recent images created by vSphere, but only sporadically.
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100 | * They "forgot" to document that one in the VMDK specification. */
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101 | #define VMDK_MARKER_UNSPECIFIED 4
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102 |
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103 | /** Dummy marker for "don't check the marker value". */
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104 | #define VMDK_MARKER_IGNORE 0xffffffffU
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105 |
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106 | /**
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107 | * Magic number for hosted images created by VMware Workstation 4, VMware
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108 | * Workstation 5, VMware Server or VMware Player. Not necessarily sparse.
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109 | */
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110 | #define VMDK_SPARSE_MAGICNUMBER 0x564d444b /* 'V' 'M' 'D' 'K' */
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111 |
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112 | /**
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113 | * VMDK hosted binary extent header. The "Sparse" is a total misnomer, as
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114 | * this header is also used for monolithic flat images.
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115 | */
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116 | #pragma pack(1)
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117 | typedef struct SparseExtentHeader
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118 | {
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119 | uint32_t magicNumber;
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120 | uint32_t version;
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121 | uint32_t flags;
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122 | uint64_t capacity;
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123 | uint64_t grainSize;
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124 | uint64_t descriptorOffset;
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125 | uint64_t descriptorSize;
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126 | uint32_t numGTEsPerGT;
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127 | uint64_t rgdOffset;
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128 | uint64_t gdOffset;
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129 | uint64_t overHead;
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130 | bool uncleanShutdown;
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131 | char singleEndLineChar;
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132 | char nonEndLineChar;
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133 | char doubleEndLineChar1;
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134 | char doubleEndLineChar2;
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135 | uint16_t compressAlgorithm;
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136 | uint8_t pad[433];
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137 | } SparseExtentHeader;
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138 | #pragma pack()
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139 |
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140 | /** VMDK capacity for a single chunk when 2G splitting is turned on. Should be
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141 | * divisible by the default grain size (64K) */
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142 | #define VMDK_2G_SPLIT_SIZE (2047 * 1024 * 1024)
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143 |
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144 | /** VMDK streamOptimized file format marker. The type field may or may not
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145 | * be actually valid, but there's always data to read there. */
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146 | #pragma pack(1)
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147 | typedef struct VMDKMARKER
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148 | {
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149 | uint64_t uSector;
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150 | uint32_t cbSize;
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151 | uint32_t uType;
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152 | } VMDKMARKER, *PVMDKMARKER;
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153 | #pragma pack()
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154 |
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155 |
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156 | /** Convert sector number/size to byte offset/size. */
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157 | #define VMDK_SECTOR2BYTE(u) ((uint64_t)(u) << 9)
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158 |
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159 | /** Convert byte offset/size to sector number/size. */
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160 | #define VMDK_BYTE2SECTOR(u) ((u) >> 9)
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161 |
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162 | /**
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163 | * VMDK extent type.
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164 | */
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165 | typedef enum VMDKETYPE
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166 | {
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167 | /** Hosted sparse extent. */
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168 | VMDKETYPE_HOSTED_SPARSE = 1,
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169 | /** Flat extent. */
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170 | VMDKETYPE_FLAT,
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171 | /** Zero extent. */
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172 | VMDKETYPE_ZERO,
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173 | /** VMFS extent, used by ESX. */
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174 | VMDKETYPE_VMFS
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175 | } VMDKETYPE, *PVMDKETYPE;
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176 |
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177 | /**
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178 | * VMDK access type for a extent.
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179 | */
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180 | typedef enum VMDKACCESS
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181 | {
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182 | /** No access allowed. */
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183 | VMDKACCESS_NOACCESS = 0,
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184 | /** Read-only access. */
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185 | VMDKACCESS_READONLY,
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186 | /** Read-write access. */
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187 | VMDKACCESS_READWRITE
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188 | } VMDKACCESS, *PVMDKACCESS;
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189 |
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190 | /** Forward declaration for PVMDKIMAGE. */
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191 | typedef struct VMDKIMAGE *PVMDKIMAGE;
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192 |
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193 | /**
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194 | * Extents files entry. Used for opening a particular file only once.
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195 | */
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196 | typedef struct VMDKFILE
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197 | {
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198 | /** Pointer to filename. Local copy. */
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199 | const char *pszFilename;
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200 | /** File open flags for consistency checking. */
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201 | unsigned fOpen;
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202 | /** Handle for sync/async file abstraction.*/
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203 | PVDIOSTORAGE pStorage;
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204 | /** Reference counter. */
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205 | unsigned uReferences;
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206 | /** Flag whether the file should be deleted on last close. */
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207 | bool fDelete;
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208 | /** Pointer to the image we belong to (for debugging purposes). */
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209 | PVMDKIMAGE pImage;
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210 | /** Pointer to next file descriptor. */
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211 | struct VMDKFILE *pNext;
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212 | /** Pointer to the previous file descriptor. */
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213 | struct VMDKFILE *pPrev;
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214 | } VMDKFILE, *PVMDKFILE;
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215 |
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216 | /**
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217 | * VMDK extent data structure.
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218 | */
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219 | typedef struct VMDKEXTENT
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220 | {
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221 | /** File handle. */
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222 | PVMDKFILE pFile;
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223 | /** Base name of the image extent. */
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224 | const char *pszBasename;
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225 | /** Full name of the image extent. */
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226 | const char *pszFullname;
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227 | /** Number of sectors in this extent. */
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228 | uint64_t cSectors;
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229 | /** Number of sectors per block (grain in VMDK speak). */
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230 | uint64_t cSectorsPerGrain;
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231 | /** Starting sector number of descriptor. */
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232 | uint64_t uDescriptorSector;
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233 | /** Size of descriptor in sectors. */
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234 | uint64_t cDescriptorSectors;
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235 | /** Starting sector number of grain directory. */
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236 | uint64_t uSectorGD;
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237 | /** Starting sector number of redundant grain directory. */
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238 | uint64_t uSectorRGD;
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239 | /** Total number of metadata sectors. */
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240 | uint64_t cOverheadSectors;
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241 | /** Nominal size (i.e. as described by the descriptor) of this extent. */
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242 | uint64_t cNominalSectors;
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243 | /** Sector offset (i.e. as described by the descriptor) of this extent. */
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244 | uint64_t uSectorOffset;
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245 | /** Number of entries in a grain table. */
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246 | uint32_t cGTEntries;
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247 | /** Number of sectors reachable via a grain directory entry. */
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248 | uint32_t cSectorsPerGDE;
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249 | /** Number of entries in the grain directory. */
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250 | uint32_t cGDEntries;
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251 | /** Pointer to the next free sector. Legacy information. Do not use. */
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252 | uint32_t uFreeSector;
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253 | /** Number of this extent in the list of images. */
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254 | uint32_t uExtent;
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255 | /** Pointer to the descriptor (NULL if no descriptor in this extent). */
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256 | char *pDescData;
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257 | /** Pointer to the grain directory. */
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258 | uint32_t *pGD;
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259 | /** Pointer to the redundant grain directory. */
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260 | uint32_t *pRGD;
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261 | /** VMDK version of this extent. 1=1.0/1.1 */
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262 | uint32_t uVersion;
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263 | /** Type of this extent. */
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264 | VMDKETYPE enmType;
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265 | /** Access to this extent. */
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266 | VMDKACCESS enmAccess;
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267 | /** Flag whether this extent is marked as unclean. */
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268 | bool fUncleanShutdown;
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269 | /** Flag whether the metadata in the extent header needs to be updated. */
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270 | bool fMetaDirty;
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271 | /** Flag whether there is a footer in this extent. */
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272 | bool fFooter;
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273 | /** Compression type for this extent. */
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274 | uint16_t uCompression;
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275 | /** Append position for writing new grain. Only for sparse extents. */
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276 | uint64_t uAppendPosition;
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277 | /** Last grain which was accessed. Only for streamOptimized extents. */
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278 | uint32_t uLastGrainAccess;
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279 | /** Starting sector corresponding to the grain buffer. */
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280 | uint32_t uGrainSectorAbs;
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281 | /** Grain number corresponding to the grain buffer. */
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282 | uint32_t uGrain;
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283 | /** Actual size of the compressed data, only valid for reading. */
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284 | uint32_t cbGrainStreamRead;
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285 | /** Size of compressed grain buffer for streamOptimized extents. */
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286 | size_t cbCompGrain;
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287 | /** Compressed grain buffer for streamOptimized extents, with marker. */
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288 | void *pvCompGrain;
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289 | /** Decompressed grain buffer for streamOptimized extents. */
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290 | void *pvGrain;
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291 | /** Reference to the image in which this extent is used. Do not use this
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292 | * on a regular basis to avoid passing pImage references to functions
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293 | * explicitly. */
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294 | struct VMDKIMAGE *pImage;
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295 | } VMDKEXTENT, *PVMDKEXTENT;
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296 |
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297 | /**
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298 | * Grain table cache size. Allocated per image.
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299 | */
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300 | #define VMDK_GT_CACHE_SIZE 256
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301 |
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302 | /**
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303 | * Grain table block size. Smaller than an actual grain table block to allow
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304 | * more grain table blocks to be cached without having to allocate excessive
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305 | * amounts of memory for the cache.
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306 | */
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307 | #define VMDK_GT_CACHELINE_SIZE 128
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308 |
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309 |
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310 | /**
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311 | * Maximum number of lines in a descriptor file. Not worth the effort of
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312 | * making it variable. Descriptor files are generally very short (~20 lines),
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313 | * with the exception of sparse files split in 2G chunks, which need for the
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314 | * maximum size (almost 2T) exactly 1025 lines for the disk database.
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315 | */
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316 | #define VMDK_DESCRIPTOR_LINES_MAX 1100U
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317 |
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318 | /**
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319 | * Parsed descriptor information. Allows easy access and update of the
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320 | * descriptor (whether separate file or not). Free form text files suck.
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321 | */
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322 | typedef struct VMDKDESCRIPTOR
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323 | {
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324 | /** Line number of first entry of the disk descriptor. */
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325 | unsigned uFirstDesc;
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326 | /** Line number of first entry in the extent description. */
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327 | unsigned uFirstExtent;
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328 | /** Line number of first disk database entry. */
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329 | unsigned uFirstDDB;
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330 | /** Total number of lines. */
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331 | unsigned cLines;
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332 | /** Total amount of memory available for the descriptor. */
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333 | size_t cbDescAlloc;
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334 | /** Set if descriptor has been changed and not yet written to disk. */
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335 | bool fDirty;
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336 | /** Array of pointers to the data in the descriptor. */
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337 | char *aLines[VMDK_DESCRIPTOR_LINES_MAX];
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338 | /** Array of line indices pointing to the next non-comment line. */
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339 | unsigned aNextLines[VMDK_DESCRIPTOR_LINES_MAX];
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340 | } VMDKDESCRIPTOR, *PVMDKDESCRIPTOR;
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341 |
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342 |
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343 | /**
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344 | * Cache entry for translating extent/sector to a sector number in that
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345 | * extent.
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346 | */
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347 | typedef struct VMDKGTCACHEENTRY
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348 | {
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349 | /** Extent number for which this entry is valid. */
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350 | uint32_t uExtent;
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351 | /** GT data block number. */
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352 | uint64_t uGTBlock;
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353 | /** Data part of the cache entry. */
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354 | uint32_t aGTData[VMDK_GT_CACHELINE_SIZE];
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355 | } VMDKGTCACHEENTRY, *PVMDKGTCACHEENTRY;
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356 |
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357 | /**
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358 | * Cache data structure for blocks of grain table entries. For now this is a
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359 | * fixed size direct mapping cache, but this should be adapted to the size of
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360 | * the sparse image and maybe converted to a set-associative cache. The
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361 | * implementation below implements a write-through cache with write allocate.
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362 | */
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363 | typedef struct VMDKGTCACHE
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364 | {
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365 | /** Cache entries. */
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366 | VMDKGTCACHEENTRY aGTCache[VMDK_GT_CACHE_SIZE];
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367 | /** Number of cache entries (currently unused). */
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368 | unsigned cEntries;
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369 | } VMDKGTCACHE, *PVMDKGTCACHE;
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370 |
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371 | /**
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372 | * Complete VMDK image data structure. Mainly a collection of extents and a few
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373 | * extra global data fields.
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374 | */
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375 | typedef struct VMDKIMAGE
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376 | {
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377 | /** Image name. */
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378 | const char *pszFilename;
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379 | /** Descriptor file if applicable. */
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380 | PVMDKFILE pFile;
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381 |
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382 | /** Pointer to the per-disk VD interface list. */
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383 | PVDINTERFACE pVDIfsDisk;
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384 | /** Pointer to the per-image VD interface list. */
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385 | PVDINTERFACE pVDIfsImage;
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386 |
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387 | /** Error interface. */
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388 | PVDINTERFACEERROR pIfError;
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389 | /** I/O interface. */
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390 | PVDINTERFACEIOINT pIfIo;
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391 |
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392 |
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393 | /** Pointer to the image extents. */
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394 | PVMDKEXTENT pExtents;
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395 | /** Number of image extents. */
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396 | unsigned cExtents;
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397 | /** Pointer to the files list, for opening a file referenced multiple
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398 | * times only once (happens mainly with raw partition access). */
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399 | PVMDKFILE pFiles;
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400 |
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401 | /**
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402 | * Pointer to an array of segment entries for async I/O.
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403 | * This is an optimization because the task number to submit is not known
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404 | * and allocating/freeing an array in the read/write functions every time
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405 | * is too expensive.
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406 | */
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407 | PPDMDATASEG paSegments;
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408 | /** Entries available in the segments array. */
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409 | unsigned cSegments;
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410 |
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411 | /** Open flags passed by VBoxHD layer. */
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412 | unsigned uOpenFlags;
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413 | /** Image flags defined during creation or determined during open. */
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414 | unsigned uImageFlags;
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415 | /** Total size of the image. */
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416 | uint64_t cbSize;
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417 | /** Physical geometry of this image. */
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418 | VDGEOMETRY PCHSGeometry;
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419 | /** Logical geometry of this image. */
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420 | VDGEOMETRY LCHSGeometry;
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421 | /** Image UUID. */
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422 | RTUUID ImageUuid;
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423 | /** Image modification UUID. */
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424 | RTUUID ModificationUuid;
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425 | /** Parent image UUID. */
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426 | RTUUID ParentUuid;
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427 | /** Parent image modification UUID. */
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428 | RTUUID ParentModificationUuid;
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429 |
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430 | /** Pointer to grain table cache, if this image contains sparse extents. */
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431 | PVMDKGTCACHE pGTCache;
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432 | /** Pointer to the descriptor (NULL if no separate descriptor file). */
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433 | char *pDescData;
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434 | /** Allocation size of the descriptor file. */
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435 | size_t cbDescAlloc;
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436 | /** Parsed descriptor file content. */
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437 | VMDKDESCRIPTOR Descriptor;
|
---|
438 | /** The static region list. */
|
---|
439 | VDREGIONLIST RegionList;
|
---|
440 | } VMDKIMAGE;
|
---|
441 |
|
---|
442 |
|
---|
443 | /** State for the input/output callout of the inflate reader/deflate writer. */
|
---|
444 | typedef struct VMDKCOMPRESSIO
|
---|
445 | {
|
---|
446 | /* Image this operation relates to. */
|
---|
447 | PVMDKIMAGE pImage;
|
---|
448 | /* Current read position. */
|
---|
449 | ssize_t iOffset;
|
---|
450 | /* Size of the compressed grain buffer (available data). */
|
---|
451 | size_t cbCompGrain;
|
---|
452 | /* Pointer to the compressed grain buffer. */
|
---|
453 | void *pvCompGrain;
|
---|
454 | } VMDKCOMPRESSIO;
|
---|
455 |
|
---|
456 |
|
---|
457 | /** Tracks async grain allocation. */
|
---|
458 | typedef struct VMDKGRAINALLOCASYNC
|
---|
459 | {
|
---|
460 | /** Flag whether the allocation failed. */
|
---|
461 | bool fIoErr;
|
---|
462 | /** Current number of transfers pending.
|
---|
463 | * If reached 0 and there is an error the old state is restored. */
|
---|
464 | unsigned cIoXfersPending;
|
---|
465 | /** Sector number */
|
---|
466 | uint64_t uSector;
|
---|
467 | /** Flag whether the grain table needs to be updated. */
|
---|
468 | bool fGTUpdateNeeded;
|
---|
469 | /** Extent the allocation happens. */
|
---|
470 | PVMDKEXTENT pExtent;
|
---|
471 | /** Position of the new grain, required for the grain table update. */
|
---|
472 | uint64_t uGrainOffset;
|
---|
473 | /** Grain table sector. */
|
---|
474 | uint64_t uGTSector;
|
---|
475 | /** Backup grain table sector. */
|
---|
476 | uint64_t uRGTSector;
|
---|
477 | } VMDKGRAINALLOCASYNC, *PVMDKGRAINALLOCASYNC;
|
---|
478 |
|
---|
479 | /**
|
---|
480 | * State information for vmdkRename() and helpers.
|
---|
481 | */
|
---|
482 | typedef struct VMDKRENAMESTATE
|
---|
483 | {
|
---|
484 | /** Array of old filenames. */
|
---|
485 | char **apszOldName;
|
---|
486 | /** Array of new filenames. */
|
---|
487 | char **apszNewName;
|
---|
488 | /** Array of new lines in the extent descriptor. */
|
---|
489 | char **apszNewLines;
|
---|
490 | /** Name of the old descriptor file if not a sparse image. */
|
---|
491 | char *pszOldDescName;
|
---|
492 | /** Flag whether we called vmdkFreeImage(). */
|
---|
493 | bool fImageFreed;
|
---|
494 | /** Flag whther the descriptor is embedded in the image (sparse) or
|
---|
495 | * in a separate file. */
|
---|
496 | bool fEmbeddedDesc;
|
---|
497 | /** Number of extents in the image. */
|
---|
498 | unsigned cExtents;
|
---|
499 | /** New base filename. */
|
---|
500 | char *pszNewBaseName;
|
---|
501 | /** The old base filename. */
|
---|
502 | char *pszOldBaseName;
|
---|
503 | /** New full filename. */
|
---|
504 | char *pszNewFullName;
|
---|
505 | /** Old full filename. */
|
---|
506 | char *pszOldFullName;
|
---|
507 | /** The old image name. */
|
---|
508 | const char *pszOldImageName;
|
---|
509 | /** Copy of the original VMDK descriptor. */
|
---|
510 | VMDKDESCRIPTOR DescriptorCopy;
|
---|
511 | /** Copy of the extent state for sparse images. */
|
---|
512 | VMDKEXTENT ExtentCopy;
|
---|
513 | } VMDKRENAMESTATE;
|
---|
514 | /** Pointer to a VMDK rename state. */
|
---|
515 | typedef VMDKRENAMESTATE *PVMDKRENAMESTATE;
|
---|
516 |
|
---|
517 | /*********************************************************************************************************************************
|
---|
518 | * Static Variables *
|
---|
519 | *********************************************************************************************************************************/
|
---|
520 |
|
---|
521 | /** NULL-terminated array of supported file extensions. */
|
---|
522 | static const VDFILEEXTENSION s_aVmdkFileExtensions[] =
|
---|
523 | {
|
---|
524 | {"vmdk", VDTYPE_HDD},
|
---|
525 | {NULL, VDTYPE_INVALID}
|
---|
526 | };
|
---|
527 |
|
---|
528 |
|
---|
529 | /*********************************************************************************************************************************
|
---|
530 | * Internal Functions *
|
---|
531 | *********************************************************************************************************************************/
|
---|
532 |
|
---|
533 | static void vmdkFreeStreamBuffers(PVMDKEXTENT pExtent);
|
---|
534 | static int vmdkFreeExtentData(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
535 | bool fDelete);
|
---|
536 |
|
---|
537 | static int vmdkCreateExtents(PVMDKIMAGE pImage, unsigned cExtents);
|
---|
538 | static int vmdkFlushImage(PVMDKIMAGE pImage, PVDIOCTX pIoCtx);
|
---|
539 | static int vmdkSetImageComment(PVMDKIMAGE pImage, const char *pszComment);
|
---|
540 | static int vmdkFreeImage(PVMDKIMAGE pImage, bool fDelete);
|
---|
541 |
|
---|
542 | static DECLCALLBACK(int) vmdkAllocGrainComplete(void *pBackendData, PVDIOCTX pIoCtx,
|
---|
543 | void *pvUser, int rcReq);
|
---|
544 |
|
---|
545 | /**
|
---|
546 | * Internal: open a file (using a file descriptor cache to ensure each file
|
---|
547 | * is only opened once - anything else can cause locking problems).
|
---|
548 | */
|
---|
549 | static int vmdkFileOpen(PVMDKIMAGE pImage, PVMDKFILE *ppVmdkFile,
|
---|
550 | const char *pszFilename, uint32_t fOpen)
|
---|
551 | {
|
---|
552 | int rc = VINF_SUCCESS;
|
---|
553 | PVMDKFILE pVmdkFile;
|
---|
554 |
|
---|
555 | for (pVmdkFile = pImage->pFiles;
|
---|
556 | pVmdkFile != NULL;
|
---|
557 | pVmdkFile = pVmdkFile->pNext)
|
---|
558 | {
|
---|
559 | if (!strcmp(pszFilename, pVmdkFile->pszFilename))
|
---|
560 | {
|
---|
561 | Assert(fOpen == pVmdkFile->fOpen);
|
---|
562 | pVmdkFile->uReferences++;
|
---|
563 |
|
---|
564 | *ppVmdkFile = pVmdkFile;
|
---|
565 |
|
---|
566 | return rc;
|
---|
567 | }
|
---|
568 | }
|
---|
569 |
|
---|
570 | /* If we get here, there's no matching entry in the cache. */
|
---|
571 | pVmdkFile = (PVMDKFILE)RTMemAllocZ(sizeof(VMDKFILE));
|
---|
572 | if (!pVmdkFile)
|
---|
573 | {
|
---|
574 | *ppVmdkFile = NULL;
|
---|
575 | return VERR_NO_MEMORY;
|
---|
576 | }
|
---|
577 |
|
---|
578 | pVmdkFile->pszFilename = RTStrDup(pszFilename);
|
---|
579 | if (!pVmdkFile->pszFilename)
|
---|
580 | {
|
---|
581 | RTMemFree(pVmdkFile);
|
---|
582 | *ppVmdkFile = NULL;
|
---|
583 | return VERR_NO_MEMORY;
|
---|
584 | }
|
---|
585 | pVmdkFile->fOpen = fOpen;
|
---|
586 |
|
---|
587 | rc = vdIfIoIntFileOpen(pImage->pIfIo, pszFilename, fOpen,
|
---|
588 | &pVmdkFile->pStorage);
|
---|
589 | if (RT_SUCCESS(rc))
|
---|
590 | {
|
---|
591 | pVmdkFile->uReferences = 1;
|
---|
592 | pVmdkFile->pImage = pImage;
|
---|
593 | pVmdkFile->pNext = pImage->pFiles;
|
---|
594 | if (pImage->pFiles)
|
---|
595 | pImage->pFiles->pPrev = pVmdkFile;
|
---|
596 | pImage->pFiles = pVmdkFile;
|
---|
597 | *ppVmdkFile = pVmdkFile;
|
---|
598 | }
|
---|
599 | else
|
---|
600 | {
|
---|
601 | RTStrFree((char *)(void *)pVmdkFile->pszFilename);
|
---|
602 | RTMemFree(pVmdkFile);
|
---|
603 | *ppVmdkFile = NULL;
|
---|
604 | }
|
---|
605 |
|
---|
606 | return rc;
|
---|
607 | }
|
---|
608 |
|
---|
609 | /**
|
---|
610 | * Internal: close a file, updating the file descriptor cache.
|
---|
611 | */
|
---|
612 | static int vmdkFileClose(PVMDKIMAGE pImage, PVMDKFILE *ppVmdkFile, bool fDelete)
|
---|
613 | {
|
---|
614 | int rc = VINF_SUCCESS;
|
---|
615 | PVMDKFILE pVmdkFile = *ppVmdkFile;
|
---|
616 |
|
---|
617 | AssertPtr(pVmdkFile);
|
---|
618 |
|
---|
619 | pVmdkFile->fDelete |= fDelete;
|
---|
620 | Assert(pVmdkFile->uReferences);
|
---|
621 | pVmdkFile->uReferences--;
|
---|
622 | if (pVmdkFile->uReferences == 0)
|
---|
623 | {
|
---|
624 | PVMDKFILE pPrev;
|
---|
625 | PVMDKFILE pNext;
|
---|
626 |
|
---|
627 | /* Unchain the element from the list. */
|
---|
628 | pPrev = pVmdkFile->pPrev;
|
---|
629 | pNext = pVmdkFile->pNext;
|
---|
630 |
|
---|
631 | if (pNext)
|
---|
632 | pNext->pPrev = pPrev;
|
---|
633 | if (pPrev)
|
---|
634 | pPrev->pNext = pNext;
|
---|
635 | else
|
---|
636 | pImage->pFiles = pNext;
|
---|
637 |
|
---|
638 | rc = vdIfIoIntFileClose(pImage->pIfIo, pVmdkFile->pStorage);
|
---|
639 | if (RT_SUCCESS(rc) && pVmdkFile->fDelete)
|
---|
640 | rc = vdIfIoIntFileDelete(pImage->pIfIo, pVmdkFile->pszFilename);
|
---|
641 | RTStrFree((char *)(void *)pVmdkFile->pszFilename);
|
---|
642 | RTMemFree(pVmdkFile);
|
---|
643 | }
|
---|
644 |
|
---|
645 | *ppVmdkFile = NULL;
|
---|
646 | return rc;
|
---|
647 | }
|
---|
648 |
|
---|
649 | /*#define VMDK_USE_BLOCK_DECOMP_API - test and enable */
|
---|
650 | #ifndef VMDK_USE_BLOCK_DECOMP_API
|
---|
651 | static DECLCALLBACK(int) vmdkFileInflateHelper(void *pvUser, void *pvBuf, size_t cbBuf, size_t *pcbBuf)
|
---|
652 | {
|
---|
653 | VMDKCOMPRESSIO *pInflateState = (VMDKCOMPRESSIO *)pvUser;
|
---|
654 | size_t cbInjected = 0;
|
---|
655 |
|
---|
656 | Assert(cbBuf);
|
---|
657 | if (pInflateState->iOffset < 0)
|
---|
658 | {
|
---|
659 | *(uint8_t *)pvBuf = RTZIPTYPE_ZLIB;
|
---|
660 | pvBuf = (uint8_t *)pvBuf + 1;
|
---|
661 | cbBuf--;
|
---|
662 | cbInjected = 1;
|
---|
663 | pInflateState->iOffset = RT_OFFSETOF(VMDKMARKER, uType);
|
---|
664 | }
|
---|
665 | if (!cbBuf)
|
---|
666 | {
|
---|
667 | if (pcbBuf)
|
---|
668 | *pcbBuf = cbInjected;
|
---|
669 | return VINF_SUCCESS;
|
---|
670 | }
|
---|
671 | cbBuf = RT_MIN(cbBuf, pInflateState->cbCompGrain - pInflateState->iOffset);
|
---|
672 | memcpy(pvBuf,
|
---|
673 | (uint8_t *)pInflateState->pvCompGrain + pInflateState->iOffset,
|
---|
674 | cbBuf);
|
---|
675 | pInflateState->iOffset += cbBuf;
|
---|
676 | Assert(pcbBuf);
|
---|
677 | *pcbBuf = cbBuf + cbInjected;
|
---|
678 | return VINF_SUCCESS;
|
---|
679 | }
|
---|
680 | #endif
|
---|
681 |
|
---|
682 | /**
|
---|
683 | * Internal: read from a file and inflate the compressed data,
|
---|
684 | * distinguishing between async and normal operation
|
---|
685 | */
|
---|
686 | DECLINLINE(int) vmdkFileInflateSync(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
687 | uint64_t uOffset, void *pvBuf,
|
---|
688 | size_t cbToRead, const void *pcvMarker,
|
---|
689 | uint64_t *puLBA, uint32_t *pcbMarkerData)
|
---|
690 | {
|
---|
691 | int rc;
|
---|
692 | #ifndef VMDK_USE_BLOCK_DECOMP_API
|
---|
693 | PRTZIPDECOMP pZip = NULL;
|
---|
694 | #endif
|
---|
695 | VMDKMARKER *pMarker = (VMDKMARKER *)pExtent->pvCompGrain;
|
---|
696 | size_t cbCompSize, cbActuallyRead;
|
---|
697 |
|
---|
698 | if (!pcvMarker)
|
---|
699 | {
|
---|
700 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
701 | uOffset, pMarker, RT_OFFSETOF(VMDKMARKER, uType));
|
---|
702 | if (RT_FAILURE(rc))
|
---|
703 | return rc;
|
---|
704 | }
|
---|
705 | else
|
---|
706 | {
|
---|
707 | memcpy(pMarker, pcvMarker, RT_OFFSETOF(VMDKMARKER, uType));
|
---|
708 | /* pcvMarker endianness has already been partially transformed, fix it */
|
---|
709 | pMarker->uSector = RT_H2LE_U64(pMarker->uSector);
|
---|
710 | pMarker->cbSize = RT_H2LE_U32(pMarker->cbSize);
|
---|
711 | }
|
---|
712 |
|
---|
713 | cbCompSize = RT_LE2H_U32(pMarker->cbSize);
|
---|
714 | if (cbCompSize == 0)
|
---|
715 | {
|
---|
716 | AssertMsgFailed(("VMDK: corrupted marker\n"));
|
---|
717 | return VERR_VD_VMDK_INVALID_FORMAT;
|
---|
718 | }
|
---|
719 |
|
---|
720 | /* Sanity check - the expansion ratio should be much less than 2. */
|
---|
721 | Assert(cbCompSize < 2 * cbToRead);
|
---|
722 | if (cbCompSize >= 2 * cbToRead)
|
---|
723 | return VERR_VD_VMDK_INVALID_FORMAT;
|
---|
724 |
|
---|
725 | /* Compressed grain marker. Data follows immediately. */
|
---|
726 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
727 | uOffset + RT_OFFSETOF(VMDKMARKER, uType),
|
---|
728 | (uint8_t *)pExtent->pvCompGrain
|
---|
729 | + RT_OFFSETOF(VMDKMARKER, uType),
|
---|
730 | RT_ALIGN_Z( cbCompSize
|
---|
731 | + RT_OFFSETOF(VMDKMARKER, uType),
|
---|
732 | 512)
|
---|
733 | - RT_OFFSETOF(VMDKMARKER, uType));
|
---|
734 |
|
---|
735 | if (puLBA)
|
---|
736 | *puLBA = RT_LE2H_U64(pMarker->uSector);
|
---|
737 | if (pcbMarkerData)
|
---|
738 | *pcbMarkerData = RT_ALIGN( cbCompSize
|
---|
739 | + RT_OFFSETOF(VMDKMARKER, uType),
|
---|
740 | 512);
|
---|
741 |
|
---|
742 | #ifdef VMDK_USE_BLOCK_DECOMP_API
|
---|
743 | rc = RTZipBlockDecompress(RTZIPTYPE_ZLIB, 0 /*fFlags*/,
|
---|
744 | pExtent->pvCompGrain, cbCompSize + RT_OFFSETOF(VMDKMARKER, uType), NULL,
|
---|
745 | pvBuf, cbToRead, &cbActuallyRead);
|
---|
746 | #else
|
---|
747 | VMDKCOMPRESSIO InflateState;
|
---|
748 | InflateState.pImage = pImage;
|
---|
749 | InflateState.iOffset = -1;
|
---|
750 | InflateState.cbCompGrain = cbCompSize + RT_OFFSETOF(VMDKMARKER, uType);
|
---|
751 | InflateState.pvCompGrain = pExtent->pvCompGrain;
|
---|
752 |
|
---|
753 | rc = RTZipDecompCreate(&pZip, &InflateState, vmdkFileInflateHelper);
|
---|
754 | if (RT_FAILURE(rc))
|
---|
755 | return rc;
|
---|
756 | rc = RTZipDecompress(pZip, pvBuf, cbToRead, &cbActuallyRead);
|
---|
757 | RTZipDecompDestroy(pZip);
|
---|
758 | #endif /* !VMDK_USE_BLOCK_DECOMP_API */
|
---|
759 | if (RT_FAILURE(rc))
|
---|
760 | {
|
---|
761 | if (rc == VERR_ZIP_CORRUPTED)
|
---|
762 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: Compressed image is corrupted '%s'"), pExtent->pszFullname);
|
---|
763 | return rc;
|
---|
764 | }
|
---|
765 | if (cbActuallyRead != cbToRead)
|
---|
766 | rc = VERR_VD_VMDK_INVALID_FORMAT;
|
---|
767 | return rc;
|
---|
768 | }
|
---|
769 |
|
---|
770 | static DECLCALLBACK(int) vmdkFileDeflateHelper(void *pvUser, const void *pvBuf, size_t cbBuf)
|
---|
771 | {
|
---|
772 | VMDKCOMPRESSIO *pDeflateState = (VMDKCOMPRESSIO *)pvUser;
|
---|
773 |
|
---|
774 | Assert(cbBuf);
|
---|
775 | if (pDeflateState->iOffset < 0)
|
---|
776 | {
|
---|
777 | pvBuf = (const uint8_t *)pvBuf + 1;
|
---|
778 | cbBuf--;
|
---|
779 | pDeflateState->iOffset = RT_OFFSETOF(VMDKMARKER, uType);
|
---|
780 | }
|
---|
781 | if (!cbBuf)
|
---|
782 | return VINF_SUCCESS;
|
---|
783 | if (pDeflateState->iOffset + cbBuf > pDeflateState->cbCompGrain)
|
---|
784 | return VERR_BUFFER_OVERFLOW;
|
---|
785 | memcpy((uint8_t *)pDeflateState->pvCompGrain + pDeflateState->iOffset,
|
---|
786 | pvBuf, cbBuf);
|
---|
787 | pDeflateState->iOffset += cbBuf;
|
---|
788 | return VINF_SUCCESS;
|
---|
789 | }
|
---|
790 |
|
---|
791 | /**
|
---|
792 | * Internal: deflate the uncompressed data and write to a file,
|
---|
793 | * distinguishing between async and normal operation
|
---|
794 | */
|
---|
795 | DECLINLINE(int) vmdkFileDeflateSync(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
796 | uint64_t uOffset, const void *pvBuf,
|
---|
797 | size_t cbToWrite, uint64_t uLBA,
|
---|
798 | uint32_t *pcbMarkerData)
|
---|
799 | {
|
---|
800 | int rc;
|
---|
801 | PRTZIPCOMP pZip = NULL;
|
---|
802 | VMDKCOMPRESSIO DeflateState;
|
---|
803 |
|
---|
804 | DeflateState.pImage = pImage;
|
---|
805 | DeflateState.iOffset = -1;
|
---|
806 | DeflateState.cbCompGrain = pExtent->cbCompGrain;
|
---|
807 | DeflateState.pvCompGrain = pExtent->pvCompGrain;
|
---|
808 |
|
---|
809 | rc = RTZipCompCreate(&pZip, &DeflateState, vmdkFileDeflateHelper,
|
---|
810 | RTZIPTYPE_ZLIB, RTZIPLEVEL_DEFAULT);
|
---|
811 | if (RT_FAILURE(rc))
|
---|
812 | return rc;
|
---|
813 | rc = RTZipCompress(pZip, pvBuf, cbToWrite);
|
---|
814 | if (RT_SUCCESS(rc))
|
---|
815 | rc = RTZipCompFinish(pZip);
|
---|
816 | RTZipCompDestroy(pZip);
|
---|
817 | if (RT_SUCCESS(rc))
|
---|
818 | {
|
---|
819 | Assert( DeflateState.iOffset > 0
|
---|
820 | && (size_t)DeflateState.iOffset <= DeflateState.cbCompGrain);
|
---|
821 |
|
---|
822 | /* pad with zeroes to get to a full sector size */
|
---|
823 | uint32_t uSize = DeflateState.iOffset;
|
---|
824 | if (uSize % 512)
|
---|
825 | {
|
---|
826 | uint32_t uSizeAlign = RT_ALIGN(uSize, 512);
|
---|
827 | memset((uint8_t *)pExtent->pvCompGrain + uSize, '\0',
|
---|
828 | uSizeAlign - uSize);
|
---|
829 | uSize = uSizeAlign;
|
---|
830 | }
|
---|
831 |
|
---|
832 | if (pcbMarkerData)
|
---|
833 | *pcbMarkerData = uSize;
|
---|
834 |
|
---|
835 | /* Compressed grain marker. Data follows immediately. */
|
---|
836 | VMDKMARKER *pMarker = (VMDKMARKER *)pExtent->pvCompGrain;
|
---|
837 | pMarker->uSector = RT_H2LE_U64(uLBA);
|
---|
838 | pMarker->cbSize = RT_H2LE_U32( DeflateState.iOffset
|
---|
839 | - RT_OFFSETOF(VMDKMARKER, uType));
|
---|
840 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
841 | uOffset, pMarker, uSize);
|
---|
842 | if (RT_FAILURE(rc))
|
---|
843 | return rc;
|
---|
844 | }
|
---|
845 | return rc;
|
---|
846 | }
|
---|
847 |
|
---|
848 |
|
---|
849 | /**
|
---|
850 | * Internal: check if all files are closed, prevent leaking resources.
|
---|
851 | */
|
---|
852 | static int vmdkFileCheckAllClose(PVMDKIMAGE pImage)
|
---|
853 | {
|
---|
854 | int rc = VINF_SUCCESS, rc2;
|
---|
855 | PVMDKFILE pVmdkFile;
|
---|
856 |
|
---|
857 | Assert(pImage->pFiles == NULL);
|
---|
858 | for (pVmdkFile = pImage->pFiles;
|
---|
859 | pVmdkFile != NULL;
|
---|
860 | pVmdkFile = pVmdkFile->pNext)
|
---|
861 | {
|
---|
862 | LogRel(("VMDK: leaking reference to file \"%s\"\n",
|
---|
863 | pVmdkFile->pszFilename));
|
---|
864 | pImage->pFiles = pVmdkFile->pNext;
|
---|
865 |
|
---|
866 | rc2 = vmdkFileClose(pImage, &pVmdkFile, pVmdkFile->fDelete);
|
---|
867 |
|
---|
868 | if (RT_SUCCESS(rc))
|
---|
869 | rc = rc2;
|
---|
870 | }
|
---|
871 | return rc;
|
---|
872 | }
|
---|
873 |
|
---|
874 | /**
|
---|
875 | * Internal: truncate a string (at a UTF8 code point boundary) and encode the
|
---|
876 | * critical non-ASCII characters.
|
---|
877 | */
|
---|
878 | static char *vmdkEncodeString(const char *psz)
|
---|
879 | {
|
---|
880 | char szEnc[VMDK_ENCODED_COMMENT_MAX + 3];
|
---|
881 | char *pszDst = szEnc;
|
---|
882 |
|
---|
883 | AssertPtr(psz);
|
---|
884 |
|
---|
885 | for (; *psz; psz = RTStrNextCp(psz))
|
---|
886 | {
|
---|
887 | char *pszDstPrev = pszDst;
|
---|
888 | RTUNICP Cp = RTStrGetCp(psz);
|
---|
889 | if (Cp == '\\')
|
---|
890 | {
|
---|
891 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
892 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
893 | }
|
---|
894 | else if (Cp == '\n')
|
---|
895 | {
|
---|
896 | pszDst = RTStrPutCp(pszDst, '\\');
|
---|
897 | pszDst = RTStrPutCp(pszDst, 'n');
|
---|
898 | }
|
---|
899 | else if (Cp == '\r')
|
---|
900 | {
|
---|
901 | pszDst = RTStrPutCp(pszDst, '\\');
|
---|
902 | pszDst = RTStrPutCp(pszDst, 'r');
|
---|
903 | }
|
---|
904 | else
|
---|
905 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
906 | if (pszDst - szEnc >= VMDK_ENCODED_COMMENT_MAX - 1)
|
---|
907 | {
|
---|
908 | pszDst = pszDstPrev;
|
---|
909 | break;
|
---|
910 | }
|
---|
911 | }
|
---|
912 | *pszDst = '\0';
|
---|
913 | return RTStrDup(szEnc);
|
---|
914 | }
|
---|
915 |
|
---|
916 | /**
|
---|
917 | * Internal: decode a string and store it into the specified string.
|
---|
918 | */
|
---|
919 | static int vmdkDecodeString(const char *pszEncoded, char *psz, size_t cb)
|
---|
920 | {
|
---|
921 | int rc = VINF_SUCCESS;
|
---|
922 | char szBuf[4];
|
---|
923 |
|
---|
924 | if (!cb)
|
---|
925 | return VERR_BUFFER_OVERFLOW;
|
---|
926 |
|
---|
927 | AssertPtr(psz);
|
---|
928 |
|
---|
929 | for (; *pszEncoded; pszEncoded = RTStrNextCp(pszEncoded))
|
---|
930 | {
|
---|
931 | char *pszDst = szBuf;
|
---|
932 | RTUNICP Cp = RTStrGetCp(pszEncoded);
|
---|
933 | if (Cp == '\\')
|
---|
934 | {
|
---|
935 | pszEncoded = RTStrNextCp(pszEncoded);
|
---|
936 | RTUNICP CpQ = RTStrGetCp(pszEncoded);
|
---|
937 | if (CpQ == 'n')
|
---|
938 | RTStrPutCp(pszDst, '\n');
|
---|
939 | else if (CpQ == 'r')
|
---|
940 | RTStrPutCp(pszDst, '\r');
|
---|
941 | else if (CpQ == '\0')
|
---|
942 | {
|
---|
943 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
944 | break;
|
---|
945 | }
|
---|
946 | else
|
---|
947 | RTStrPutCp(pszDst, CpQ);
|
---|
948 | }
|
---|
949 | else
|
---|
950 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
951 |
|
---|
952 | /* Need to leave space for terminating NUL. */
|
---|
953 | if ((size_t)(pszDst - szBuf) + 1 >= cb)
|
---|
954 | {
|
---|
955 | rc = VERR_BUFFER_OVERFLOW;
|
---|
956 | break;
|
---|
957 | }
|
---|
958 | memcpy(psz, szBuf, pszDst - szBuf);
|
---|
959 | psz += pszDst - szBuf;
|
---|
960 | }
|
---|
961 | *psz = '\0';
|
---|
962 | return rc;
|
---|
963 | }
|
---|
964 |
|
---|
965 | /**
|
---|
966 | * Internal: free all buffers associated with grain directories.
|
---|
967 | */
|
---|
968 | static void vmdkFreeGrainDirectory(PVMDKEXTENT pExtent)
|
---|
969 | {
|
---|
970 | if (pExtent->pGD)
|
---|
971 | {
|
---|
972 | RTMemFree(pExtent->pGD);
|
---|
973 | pExtent->pGD = NULL;
|
---|
974 | }
|
---|
975 | if (pExtent->pRGD)
|
---|
976 | {
|
---|
977 | RTMemFree(pExtent->pRGD);
|
---|
978 | pExtent->pRGD = NULL;
|
---|
979 | }
|
---|
980 | }
|
---|
981 |
|
---|
982 | /**
|
---|
983 | * Internal: allocate the compressed/uncompressed buffers for streamOptimized
|
---|
984 | * images.
|
---|
985 | */
|
---|
986 | static int vmdkAllocStreamBuffers(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
987 | {
|
---|
988 | int rc = VINF_SUCCESS;
|
---|
989 |
|
---|
990 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
991 | {
|
---|
992 | /* streamOptimized extents need a compressed grain buffer, which must
|
---|
993 | * be big enough to hold uncompressible data (which needs ~8 bytes
|
---|
994 | * more than the uncompressed data), the marker and padding. */
|
---|
995 | pExtent->cbCompGrain = RT_ALIGN_Z( VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain)
|
---|
996 | + 8 + sizeof(VMDKMARKER), 512);
|
---|
997 | pExtent->pvCompGrain = RTMemAlloc(pExtent->cbCompGrain);
|
---|
998 | if (RT_LIKELY(pExtent->pvCompGrain))
|
---|
999 | {
|
---|
1000 | /* streamOptimized extents need a decompressed grain buffer. */
|
---|
1001 | pExtent->pvGrain = RTMemAlloc(VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
1002 | if (!pExtent->pvGrain)
|
---|
1003 | rc = VERR_NO_MEMORY;
|
---|
1004 | }
|
---|
1005 | else
|
---|
1006 | rc = VERR_NO_MEMORY;
|
---|
1007 | }
|
---|
1008 |
|
---|
1009 | if (RT_FAILURE(rc))
|
---|
1010 | vmdkFreeStreamBuffers(pExtent);
|
---|
1011 | return rc;
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 | /**
|
---|
1015 | * Internal: allocate all buffers associated with grain directories.
|
---|
1016 | */
|
---|
1017 | static int vmdkAllocGrainDirectory(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
1018 | {
|
---|
1019 | RT_NOREF1(pImage);
|
---|
1020 | int rc = VINF_SUCCESS;
|
---|
1021 | size_t cbGD = pExtent->cGDEntries * sizeof(uint32_t);
|
---|
1022 |
|
---|
1023 | pExtent->pGD = (uint32_t *)RTMemAllocZ(cbGD);
|
---|
1024 | if (RT_LIKELY(pExtent->pGD))
|
---|
1025 | {
|
---|
1026 | if (pExtent->uSectorRGD)
|
---|
1027 | {
|
---|
1028 | pExtent->pRGD = (uint32_t *)RTMemAllocZ(cbGD);
|
---|
1029 | if (RT_UNLIKELY(!pExtent->pRGD))
|
---|
1030 | rc = VERR_NO_MEMORY;
|
---|
1031 | }
|
---|
1032 | }
|
---|
1033 | else
|
---|
1034 | rc = VERR_NO_MEMORY;
|
---|
1035 |
|
---|
1036 | if (RT_FAILURE(rc))
|
---|
1037 | vmdkFreeGrainDirectory(pExtent);
|
---|
1038 | return rc;
|
---|
1039 | }
|
---|
1040 |
|
---|
1041 | /**
|
---|
1042 | * Converts the grain directory from little to host endianess.
|
---|
1043 | *
|
---|
1044 | * @returns nothing.
|
---|
1045 | * @param pGD The grain directory.
|
---|
1046 | * @param cGDEntries Number of entries in the grain directory to convert.
|
---|
1047 | */
|
---|
1048 | DECLINLINE(void) vmdkGrainDirectoryConvToHost(uint32_t *pGD, uint32_t cGDEntries)
|
---|
1049 | {
|
---|
1050 | uint32_t *pGDTmp = pGD;
|
---|
1051 |
|
---|
1052 | for (uint32_t i = 0; i < cGDEntries; i++, pGDTmp++)
|
---|
1053 | *pGDTmp = RT_LE2H_U32(*pGDTmp);
|
---|
1054 | }
|
---|
1055 |
|
---|
1056 | /**
|
---|
1057 | * Read the grain directory and allocated grain tables verifying them against
|
---|
1058 | * their back up copies if available.
|
---|
1059 | *
|
---|
1060 | * @returns VBox status code.
|
---|
1061 | * @param pImage Image instance data.
|
---|
1062 | * @param pExtent The VMDK extent.
|
---|
1063 | */
|
---|
1064 | static int vmdkReadGrainDirectory(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
1065 | {
|
---|
1066 | int rc = VINF_SUCCESS;
|
---|
1067 | size_t cbGD = pExtent->cGDEntries * sizeof(uint32_t);
|
---|
1068 |
|
---|
1069 | AssertReturn(( pExtent->enmType == VMDKETYPE_HOSTED_SPARSE
|
---|
1070 | && pExtent->uSectorGD != VMDK_GD_AT_END
|
---|
1071 | && pExtent->uSectorRGD != VMDK_GD_AT_END), VERR_INTERNAL_ERROR);
|
---|
1072 |
|
---|
1073 | rc = vmdkAllocGrainDirectory(pImage, pExtent);
|
---|
1074 | if (RT_SUCCESS(rc))
|
---|
1075 | {
|
---|
1076 | /* The VMDK 1.1 spec seems to talk about compressed grain directories,
|
---|
1077 | * but in reality they are not compressed. */
|
---|
1078 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1079 | VMDK_SECTOR2BYTE(pExtent->uSectorGD),
|
---|
1080 | pExtent->pGD, cbGD);
|
---|
1081 | if (RT_SUCCESS(rc))
|
---|
1082 | {
|
---|
1083 | vmdkGrainDirectoryConvToHost(pExtent->pGD, pExtent->cGDEntries);
|
---|
1084 |
|
---|
1085 | if ( pExtent->uSectorRGD
|
---|
1086 | && !(pImage->uOpenFlags & VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS))
|
---|
1087 | {
|
---|
1088 | /* The VMDK 1.1 spec seems to talk about compressed grain directories,
|
---|
1089 | * but in reality they are not compressed. */
|
---|
1090 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1091 | VMDK_SECTOR2BYTE(pExtent->uSectorRGD),
|
---|
1092 | pExtent->pRGD, cbGD);
|
---|
1093 | if (RT_SUCCESS(rc))
|
---|
1094 | {
|
---|
1095 | vmdkGrainDirectoryConvToHost(pExtent->pRGD, pExtent->cGDEntries);
|
---|
1096 |
|
---|
1097 | /* Check grain table and redundant grain table for consistency. */
|
---|
1098 | size_t cbGT = pExtent->cGTEntries * sizeof(uint32_t);
|
---|
1099 | size_t cbGTBuffers = cbGT; /* Start with space for one GT. */
|
---|
1100 | size_t cbGTBuffersMax = _1M;
|
---|
1101 |
|
---|
1102 | uint32_t *pTmpGT1 = (uint32_t *)RTMemAlloc(cbGTBuffers);
|
---|
1103 | uint32_t *pTmpGT2 = (uint32_t *)RTMemAlloc(cbGTBuffers);
|
---|
1104 |
|
---|
1105 | if ( !pTmpGT1
|
---|
1106 | || !pTmpGT2)
|
---|
1107 | rc = VERR_NO_MEMORY;
|
---|
1108 |
|
---|
1109 | size_t i = 0;
|
---|
1110 | uint32_t *pGDTmp = pExtent->pGD;
|
---|
1111 | uint32_t *pRGDTmp = pExtent->pRGD;
|
---|
1112 |
|
---|
1113 | /* Loop through all entries. */
|
---|
1114 | while (i < pExtent->cGDEntries)
|
---|
1115 | {
|
---|
1116 | uint32_t uGTStart = *pGDTmp;
|
---|
1117 | uint32_t uRGTStart = *pRGDTmp;
|
---|
1118 | size_t cbGTRead = cbGT;
|
---|
1119 |
|
---|
1120 | /* If no grain table is allocated skip the entry. */
|
---|
1121 | if (*pGDTmp == 0 && *pRGDTmp == 0)
|
---|
1122 | {
|
---|
1123 | i++;
|
---|
1124 | continue;
|
---|
1125 | }
|
---|
1126 |
|
---|
1127 | if (*pGDTmp == 0 || *pRGDTmp == 0 || *pGDTmp == *pRGDTmp)
|
---|
1128 | {
|
---|
1129 | /* Just one grain directory entry refers to a not yet allocated
|
---|
1130 | * grain table or both grain directory copies refer to the same
|
---|
1131 | * grain table. Not allowed. */
|
---|
1132 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1133 | N_("VMDK: inconsistent references to grain directory in '%s'"), pExtent->pszFullname);
|
---|
1134 | break;
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | i++;
|
---|
1138 | pGDTmp++;
|
---|
1139 | pRGDTmp++;
|
---|
1140 |
|
---|
1141 | /*
|
---|
1142 | * Read a few tables at once if adjacent to decrease the number
|
---|
1143 | * of I/O requests. Read at maximum 1MB at once.
|
---|
1144 | */
|
---|
1145 | while ( i < pExtent->cGDEntries
|
---|
1146 | && cbGTRead < cbGTBuffersMax)
|
---|
1147 | {
|
---|
1148 | /* If no grain table is allocated skip the entry. */
|
---|
1149 | if (*pGDTmp == 0 && *pRGDTmp == 0)
|
---|
1150 | {
|
---|
1151 | i++;
|
---|
1152 | continue;
|
---|
1153 | }
|
---|
1154 |
|
---|
1155 | if (*pGDTmp == 0 || *pRGDTmp == 0 || *pGDTmp == *pRGDTmp)
|
---|
1156 | {
|
---|
1157 | /* Just one grain directory entry refers to a not yet allocated
|
---|
1158 | * grain table or both grain directory copies refer to the same
|
---|
1159 | * grain table. Not allowed. */
|
---|
1160 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1161 | N_("VMDK: inconsistent references to grain directory in '%s'"), pExtent->pszFullname);
|
---|
1162 | break;
|
---|
1163 | }
|
---|
1164 |
|
---|
1165 | /* Check that the start offsets are adjacent.*/
|
---|
1166 | if ( VMDK_SECTOR2BYTE(uGTStart) + cbGTRead != VMDK_SECTOR2BYTE(*pGDTmp)
|
---|
1167 | || VMDK_SECTOR2BYTE(uRGTStart) + cbGTRead != VMDK_SECTOR2BYTE(*pRGDTmp))
|
---|
1168 | break;
|
---|
1169 |
|
---|
1170 | i++;
|
---|
1171 | pGDTmp++;
|
---|
1172 | pRGDTmp++;
|
---|
1173 | cbGTRead += cbGT;
|
---|
1174 | }
|
---|
1175 |
|
---|
1176 | /* Increase buffers if required. */
|
---|
1177 | if ( RT_SUCCESS(rc)
|
---|
1178 | && cbGTBuffers < cbGTRead)
|
---|
1179 | {
|
---|
1180 | uint32_t *pTmp;
|
---|
1181 | pTmp = (uint32_t *)RTMemRealloc(pTmpGT1, cbGTRead);
|
---|
1182 | if (pTmp)
|
---|
1183 | {
|
---|
1184 | pTmpGT1 = pTmp;
|
---|
1185 | pTmp = (uint32_t *)RTMemRealloc(pTmpGT2, cbGTRead);
|
---|
1186 | if (pTmp)
|
---|
1187 | pTmpGT2 = pTmp;
|
---|
1188 | else
|
---|
1189 | rc = VERR_NO_MEMORY;
|
---|
1190 | }
|
---|
1191 | else
|
---|
1192 | rc = VERR_NO_MEMORY;
|
---|
1193 |
|
---|
1194 | if (rc == VERR_NO_MEMORY)
|
---|
1195 | {
|
---|
1196 | /* Reset to the old values. */
|
---|
1197 | rc = VINF_SUCCESS;
|
---|
1198 | i -= cbGTRead / cbGT;
|
---|
1199 | cbGTRead = cbGT;
|
---|
1200 |
|
---|
1201 | /* Don't try to increase the buffer again in the next run. */
|
---|
1202 | cbGTBuffersMax = cbGTBuffers;
|
---|
1203 | }
|
---|
1204 | }
|
---|
1205 |
|
---|
1206 | if (RT_SUCCESS(rc))
|
---|
1207 | {
|
---|
1208 | /* The VMDK 1.1 spec seems to talk about compressed grain tables,
|
---|
1209 | * but in reality they are not compressed. */
|
---|
1210 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1211 | VMDK_SECTOR2BYTE(uGTStart),
|
---|
1212 | pTmpGT1, cbGTRead);
|
---|
1213 | if (RT_FAILURE(rc))
|
---|
1214 | {
|
---|
1215 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1216 | N_("VMDK: error reading grain table in '%s'"), pExtent->pszFullname);
|
---|
1217 | break;
|
---|
1218 | }
|
---|
1219 | /* The VMDK 1.1 spec seems to talk about compressed grain tables,
|
---|
1220 | * but in reality they are not compressed. */
|
---|
1221 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1222 | VMDK_SECTOR2BYTE(uRGTStart),
|
---|
1223 | pTmpGT2, cbGTRead);
|
---|
1224 | if (RT_FAILURE(rc))
|
---|
1225 | {
|
---|
1226 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1227 | N_("VMDK: error reading backup grain table in '%s'"), pExtent->pszFullname);
|
---|
1228 | break;
|
---|
1229 | }
|
---|
1230 | if (memcmp(pTmpGT1, pTmpGT2, cbGTRead))
|
---|
1231 | {
|
---|
1232 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1233 | N_("VMDK: inconsistency between grain table and backup grain table in '%s'"), pExtent->pszFullname);
|
---|
1234 | break;
|
---|
1235 | }
|
---|
1236 | }
|
---|
1237 | } /* while (i < pExtent->cGDEntries) */
|
---|
1238 |
|
---|
1239 | /** @todo figure out what to do for unclean VMDKs. */
|
---|
1240 | if (pTmpGT1)
|
---|
1241 | RTMemFree(pTmpGT1);
|
---|
1242 | if (pTmpGT2)
|
---|
1243 | RTMemFree(pTmpGT2);
|
---|
1244 | }
|
---|
1245 | else
|
---|
1246 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1247 | N_("VMDK: could not read redundant grain directory in '%s'"), pExtent->pszFullname);
|
---|
1248 | }
|
---|
1249 | }
|
---|
1250 | else
|
---|
1251 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1252 | N_("VMDK: could not read grain directory in '%s': %Rrc"), pExtent->pszFullname, rc);
|
---|
1253 | }
|
---|
1254 |
|
---|
1255 | if (RT_FAILURE(rc))
|
---|
1256 | vmdkFreeGrainDirectory(pExtent);
|
---|
1257 | return rc;
|
---|
1258 | }
|
---|
1259 |
|
---|
1260 | /**
|
---|
1261 | * Creates a new grain directory for the given extent at the given start sector.
|
---|
1262 | *
|
---|
1263 | * @returns VBox status code.
|
---|
1264 | * @param pImage Image instance data.
|
---|
1265 | * @param pExtent The VMDK extent.
|
---|
1266 | * @param uStartSector Where the grain directory should be stored in the image.
|
---|
1267 | * @param fPreAlloc Flag whether to pre allocate the grain tables at this point.
|
---|
1268 | */
|
---|
1269 | static int vmdkCreateGrainDirectory(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
1270 | uint64_t uStartSector, bool fPreAlloc)
|
---|
1271 | {
|
---|
1272 | int rc = VINF_SUCCESS;
|
---|
1273 | unsigned i;
|
---|
1274 | size_t cbGD = pExtent->cGDEntries * sizeof(uint32_t);
|
---|
1275 | size_t cbGDRounded = RT_ALIGN_64(cbGD, 512);
|
---|
1276 | size_t cbGTRounded;
|
---|
1277 | uint64_t cbOverhead;
|
---|
1278 |
|
---|
1279 | if (fPreAlloc)
|
---|
1280 | {
|
---|
1281 | cbGTRounded = RT_ALIGN_64(pExtent->cGDEntries * pExtent->cGTEntries * sizeof(uint32_t), 512);
|
---|
1282 | cbOverhead = VMDK_SECTOR2BYTE(uStartSector) + cbGDRounded + cbGTRounded;
|
---|
1283 | }
|
---|
1284 | else
|
---|
1285 | {
|
---|
1286 | /* Use a dummy start sector for layout computation. */
|
---|
1287 | if (uStartSector == VMDK_GD_AT_END)
|
---|
1288 | uStartSector = 1;
|
---|
1289 | cbGTRounded = 0;
|
---|
1290 | cbOverhead = VMDK_SECTOR2BYTE(uStartSector) + cbGDRounded;
|
---|
1291 | }
|
---|
1292 |
|
---|
1293 | /* For streamOptimized extents there is only one grain directory,
|
---|
1294 | * and for all others take redundant grain directory into account. */
|
---|
1295 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
1296 | {
|
---|
1297 | cbOverhead = RT_ALIGN_64(cbOverhead,
|
---|
1298 | VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
1299 | }
|
---|
1300 | else
|
---|
1301 | {
|
---|
1302 | cbOverhead += cbGDRounded + cbGTRounded;
|
---|
1303 | cbOverhead = RT_ALIGN_64(cbOverhead,
|
---|
1304 | VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
1305 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pExtent->pFile->pStorage, cbOverhead);
|
---|
1306 | }
|
---|
1307 |
|
---|
1308 | if (RT_SUCCESS(rc))
|
---|
1309 | {
|
---|
1310 | pExtent->uAppendPosition = cbOverhead;
|
---|
1311 | pExtent->cOverheadSectors = VMDK_BYTE2SECTOR(cbOverhead);
|
---|
1312 |
|
---|
1313 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
1314 | {
|
---|
1315 | pExtent->uSectorRGD = 0;
|
---|
1316 | pExtent->uSectorGD = uStartSector;
|
---|
1317 | }
|
---|
1318 | else
|
---|
1319 | {
|
---|
1320 | pExtent->uSectorRGD = uStartSector;
|
---|
1321 | pExtent->uSectorGD = uStartSector + VMDK_BYTE2SECTOR(cbGDRounded + cbGTRounded);
|
---|
1322 | }
|
---|
1323 |
|
---|
1324 | rc = vmdkAllocStreamBuffers(pImage, pExtent);
|
---|
1325 | if (RT_SUCCESS(rc))
|
---|
1326 | {
|
---|
1327 | rc = vmdkAllocGrainDirectory(pImage, pExtent);
|
---|
1328 | if ( RT_SUCCESS(rc)
|
---|
1329 | && fPreAlloc)
|
---|
1330 | {
|
---|
1331 | uint32_t uGTSectorLE;
|
---|
1332 | uint64_t uOffsetSectors;
|
---|
1333 |
|
---|
1334 | if (pExtent->pRGD)
|
---|
1335 | {
|
---|
1336 | uOffsetSectors = pExtent->uSectorRGD + VMDK_BYTE2SECTOR(cbGDRounded);
|
---|
1337 | for (i = 0; i < pExtent->cGDEntries; i++)
|
---|
1338 | {
|
---|
1339 | pExtent->pRGD[i] = uOffsetSectors;
|
---|
1340 | uGTSectorLE = RT_H2LE_U64(uOffsetSectors);
|
---|
1341 | /* Write the redundant grain directory entry to disk. */
|
---|
1342 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1343 | VMDK_SECTOR2BYTE(pExtent->uSectorRGD) + i * sizeof(uGTSectorLE),
|
---|
1344 | &uGTSectorLE, sizeof(uGTSectorLE));
|
---|
1345 | if (RT_FAILURE(rc))
|
---|
1346 | {
|
---|
1347 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write new redundant grain directory entry in '%s'"), pExtent->pszFullname);
|
---|
1348 | break;
|
---|
1349 | }
|
---|
1350 | uOffsetSectors += VMDK_BYTE2SECTOR(pExtent->cGTEntries * sizeof(uint32_t));
|
---|
1351 | }
|
---|
1352 | }
|
---|
1353 |
|
---|
1354 | if (RT_SUCCESS(rc))
|
---|
1355 | {
|
---|
1356 | uOffsetSectors = pExtent->uSectorGD + VMDK_BYTE2SECTOR(cbGDRounded);
|
---|
1357 | for (i = 0; i < pExtent->cGDEntries; i++)
|
---|
1358 | {
|
---|
1359 | pExtent->pGD[i] = uOffsetSectors;
|
---|
1360 | uGTSectorLE = RT_H2LE_U64(uOffsetSectors);
|
---|
1361 | /* Write the grain directory entry to disk. */
|
---|
1362 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1363 | VMDK_SECTOR2BYTE(pExtent->uSectorGD) + i * sizeof(uGTSectorLE),
|
---|
1364 | &uGTSectorLE, sizeof(uGTSectorLE));
|
---|
1365 | if (RT_FAILURE(rc))
|
---|
1366 | {
|
---|
1367 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write new grain directory entry in '%s'"), pExtent->pszFullname);
|
---|
1368 | break;
|
---|
1369 | }
|
---|
1370 | uOffsetSectors += VMDK_BYTE2SECTOR(pExtent->cGTEntries * sizeof(uint32_t));
|
---|
1371 | }
|
---|
1372 | }
|
---|
1373 | }
|
---|
1374 | }
|
---|
1375 | }
|
---|
1376 |
|
---|
1377 | if (RT_FAILURE(rc))
|
---|
1378 | vmdkFreeGrainDirectory(pExtent);
|
---|
1379 | return rc;
|
---|
1380 | }
|
---|
1381 |
|
---|
1382 | /**
|
---|
1383 | * Unquotes the given string returning the result in a separate buffer.
|
---|
1384 | *
|
---|
1385 | * @returns VBox status code.
|
---|
1386 | * @param pImage The VMDK image state.
|
---|
1387 | * @param pszStr The string to unquote.
|
---|
1388 | * @param ppszUnquoted Where to store the return value, use RTMemTmpFree to
|
---|
1389 | * free.
|
---|
1390 | * @param ppszNext Where to store the pointer to any character following
|
---|
1391 | * the quoted value, optional.
|
---|
1392 | */
|
---|
1393 | static int vmdkStringUnquote(PVMDKIMAGE pImage, const char *pszStr,
|
---|
1394 | char **ppszUnquoted, char **ppszNext)
|
---|
1395 | {
|
---|
1396 | const char *pszStart = pszStr;
|
---|
1397 | char *pszQ;
|
---|
1398 | char *pszUnquoted;
|
---|
1399 |
|
---|
1400 | /* Skip over whitespace. */
|
---|
1401 | while (*pszStr == ' ' || *pszStr == '\t')
|
---|
1402 | pszStr++;
|
---|
1403 |
|
---|
1404 | if (*pszStr != '"')
|
---|
1405 | {
|
---|
1406 | pszQ = (char *)pszStr;
|
---|
1407 | while (*pszQ && *pszQ != ' ' && *pszQ != '\t')
|
---|
1408 | pszQ++;
|
---|
1409 | }
|
---|
1410 | else
|
---|
1411 | {
|
---|
1412 | pszStr++;
|
---|
1413 | pszQ = (char *)strchr(pszStr, '"');
|
---|
1414 | if (pszQ == NULL)
|
---|
1415 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: incorrectly quoted value in descriptor in '%s' (raw value %s)"),
|
---|
1416 | pImage->pszFilename, pszStart);
|
---|
1417 | }
|
---|
1418 |
|
---|
1419 | pszUnquoted = (char *)RTMemTmpAlloc(pszQ - pszStr + 1);
|
---|
1420 | if (!pszUnquoted)
|
---|
1421 | return VERR_NO_MEMORY;
|
---|
1422 | memcpy(pszUnquoted, pszStr, pszQ - pszStr);
|
---|
1423 | pszUnquoted[pszQ - pszStr] = '\0';
|
---|
1424 | *ppszUnquoted = pszUnquoted;
|
---|
1425 | if (ppszNext)
|
---|
1426 | *ppszNext = pszQ + 1;
|
---|
1427 | return VINF_SUCCESS;
|
---|
1428 | }
|
---|
1429 |
|
---|
1430 | static int vmdkDescInitStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1431 | const char *pszLine)
|
---|
1432 | {
|
---|
1433 | char *pEnd = pDescriptor->aLines[pDescriptor->cLines];
|
---|
1434 | ssize_t cbDiff = strlen(pszLine) + 1;
|
---|
1435 |
|
---|
1436 | if ( pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1
|
---|
1437 | && pEnd - pDescriptor->aLines[0] > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff)
|
---|
1438 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1439 |
|
---|
1440 | memcpy(pEnd, pszLine, cbDiff);
|
---|
1441 | pDescriptor->cLines++;
|
---|
1442 | pDescriptor->aLines[pDescriptor->cLines] = pEnd + cbDiff;
|
---|
1443 | pDescriptor->fDirty = true;
|
---|
1444 |
|
---|
1445 | return VINF_SUCCESS;
|
---|
1446 | }
|
---|
1447 |
|
---|
1448 | static bool vmdkDescGetStr(PVMDKDESCRIPTOR pDescriptor, unsigned uStart,
|
---|
1449 | const char *pszKey, const char **ppszValue)
|
---|
1450 | {
|
---|
1451 | size_t cbKey = strlen(pszKey);
|
---|
1452 | const char *pszValue;
|
---|
1453 |
|
---|
1454 | while (uStart != 0)
|
---|
1455 | {
|
---|
1456 | if (!strncmp(pDescriptor->aLines[uStart], pszKey, cbKey))
|
---|
1457 | {
|
---|
1458 | /* Key matches, check for a '=' (preceded by whitespace). */
|
---|
1459 | pszValue = pDescriptor->aLines[uStart] + cbKey;
|
---|
1460 | while (*pszValue == ' ' || *pszValue == '\t')
|
---|
1461 | pszValue++;
|
---|
1462 | if (*pszValue == '=')
|
---|
1463 | {
|
---|
1464 | *ppszValue = pszValue + 1;
|
---|
1465 | break;
|
---|
1466 | }
|
---|
1467 | }
|
---|
1468 | uStart = pDescriptor->aNextLines[uStart];
|
---|
1469 | }
|
---|
1470 | return !!uStart;
|
---|
1471 | }
|
---|
1472 |
|
---|
1473 | static int vmdkDescSetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1474 | unsigned uStart,
|
---|
1475 | const char *pszKey, const char *pszValue)
|
---|
1476 | {
|
---|
1477 | char *pszTmp = NULL; /* (MSC naturally cannot figure this isn't used uninitialized) */
|
---|
1478 | size_t cbKey = strlen(pszKey);
|
---|
1479 | unsigned uLast = 0;
|
---|
1480 |
|
---|
1481 | while (uStart != 0)
|
---|
1482 | {
|
---|
1483 | if (!strncmp(pDescriptor->aLines[uStart], pszKey, cbKey))
|
---|
1484 | {
|
---|
1485 | /* Key matches, check for a '=' (preceded by whitespace). */
|
---|
1486 | pszTmp = pDescriptor->aLines[uStart] + cbKey;
|
---|
1487 | while (*pszTmp == ' ' || *pszTmp == '\t')
|
---|
1488 | pszTmp++;
|
---|
1489 | if (*pszTmp == '=')
|
---|
1490 | {
|
---|
1491 | pszTmp++;
|
---|
1492 | /** @todo r=bird: Doesn't skipping trailing blanks here just cause unecessary
|
---|
1493 | * bloat and potentially out of space error? */
|
---|
1494 | while (*pszTmp == ' ' || *pszTmp == '\t')
|
---|
1495 | pszTmp++;
|
---|
1496 | break;
|
---|
1497 | }
|
---|
1498 | }
|
---|
1499 | if (!pDescriptor->aNextLines[uStart])
|
---|
1500 | uLast = uStart;
|
---|
1501 | uStart = pDescriptor->aNextLines[uStart];
|
---|
1502 | }
|
---|
1503 | if (uStart)
|
---|
1504 | {
|
---|
1505 | if (pszValue)
|
---|
1506 | {
|
---|
1507 | /* Key already exists, replace existing value. */
|
---|
1508 | size_t cbOldVal = strlen(pszTmp);
|
---|
1509 | size_t cbNewVal = strlen(pszValue);
|
---|
1510 | ssize_t cbDiff = cbNewVal - cbOldVal;
|
---|
1511 | /* Check for buffer overflow. */
|
---|
1512 | if ( pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[0]
|
---|
1513 | > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff)
|
---|
1514 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1515 |
|
---|
1516 | memmove(pszTmp + cbNewVal, pszTmp + cbOldVal,
|
---|
1517 | pDescriptor->aLines[pDescriptor->cLines] - pszTmp - cbOldVal);
|
---|
1518 | memcpy(pszTmp, pszValue, cbNewVal + 1);
|
---|
1519 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1520 | pDescriptor->aLines[i] += cbDiff;
|
---|
1521 | }
|
---|
1522 | else
|
---|
1523 | {
|
---|
1524 | memmove(pDescriptor->aLines[uStart], pDescriptor->aLines[uStart+1],
|
---|
1525 | pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[uStart+1] + 1);
|
---|
1526 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1527 | {
|
---|
1528 | pDescriptor->aLines[i-1] = pDescriptor->aLines[i];
|
---|
1529 | if (pDescriptor->aNextLines[i])
|
---|
1530 | pDescriptor->aNextLines[i-1] = pDescriptor->aNextLines[i] - 1;
|
---|
1531 | else
|
---|
1532 | pDescriptor->aNextLines[i-1] = 0;
|
---|
1533 | }
|
---|
1534 | pDescriptor->cLines--;
|
---|
1535 | /* Adjust starting line numbers of following descriptor sections. */
|
---|
1536 | if (uStart < pDescriptor->uFirstExtent)
|
---|
1537 | pDescriptor->uFirstExtent--;
|
---|
1538 | if (uStart < pDescriptor->uFirstDDB)
|
---|
1539 | pDescriptor->uFirstDDB--;
|
---|
1540 | }
|
---|
1541 | }
|
---|
1542 | else
|
---|
1543 | {
|
---|
1544 | /* Key doesn't exist, append after the last entry in this category. */
|
---|
1545 | if (!pszValue)
|
---|
1546 | {
|
---|
1547 | /* Key doesn't exist, and it should be removed. Simply a no-op. */
|
---|
1548 | return VINF_SUCCESS;
|
---|
1549 | }
|
---|
1550 | cbKey = strlen(pszKey);
|
---|
1551 | size_t cbValue = strlen(pszValue);
|
---|
1552 | ssize_t cbDiff = cbKey + 1 + cbValue + 1;
|
---|
1553 | /* Check for buffer overflow. */
|
---|
1554 | if ( (pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1)
|
---|
1555 | || ( pDescriptor->aLines[pDescriptor->cLines]
|
---|
1556 | - pDescriptor->aLines[0] > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff))
|
---|
1557 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1558 | for (unsigned i = pDescriptor->cLines + 1; i > uLast + 1; i--)
|
---|
1559 | {
|
---|
1560 | pDescriptor->aLines[i] = pDescriptor->aLines[i - 1];
|
---|
1561 | if (pDescriptor->aNextLines[i - 1])
|
---|
1562 | pDescriptor->aNextLines[i] = pDescriptor->aNextLines[i - 1] + 1;
|
---|
1563 | else
|
---|
1564 | pDescriptor->aNextLines[i] = 0;
|
---|
1565 | }
|
---|
1566 | uStart = uLast + 1;
|
---|
1567 | pDescriptor->aNextLines[uLast] = uStart;
|
---|
1568 | pDescriptor->aNextLines[uStart] = 0;
|
---|
1569 | pDescriptor->cLines++;
|
---|
1570 | pszTmp = pDescriptor->aLines[uStart];
|
---|
1571 | memmove(pszTmp + cbDiff, pszTmp,
|
---|
1572 | pDescriptor->aLines[pDescriptor->cLines] - pszTmp);
|
---|
1573 | memcpy(pDescriptor->aLines[uStart], pszKey, cbKey);
|
---|
1574 | pDescriptor->aLines[uStart][cbKey] = '=';
|
---|
1575 | memcpy(pDescriptor->aLines[uStart] + cbKey + 1, pszValue, cbValue + 1);
|
---|
1576 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1577 | pDescriptor->aLines[i] += cbDiff;
|
---|
1578 |
|
---|
1579 | /* Adjust starting line numbers of following descriptor sections. */
|
---|
1580 | if (uStart <= pDescriptor->uFirstExtent)
|
---|
1581 | pDescriptor->uFirstExtent++;
|
---|
1582 | if (uStart <= pDescriptor->uFirstDDB)
|
---|
1583 | pDescriptor->uFirstDDB++;
|
---|
1584 | }
|
---|
1585 | pDescriptor->fDirty = true;
|
---|
1586 | return VINF_SUCCESS;
|
---|
1587 | }
|
---|
1588 |
|
---|
1589 | static int vmdkDescBaseGetU32(PVMDKDESCRIPTOR pDescriptor, const char *pszKey,
|
---|
1590 | uint32_t *puValue)
|
---|
1591 | {
|
---|
1592 | const char *pszValue;
|
---|
1593 |
|
---|
1594 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDesc, pszKey,
|
---|
1595 | &pszValue))
|
---|
1596 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1597 | return RTStrToUInt32Ex(pszValue, NULL, 10, puValue);
|
---|
1598 | }
|
---|
1599 |
|
---|
1600 | /**
|
---|
1601 | * Returns the value of the given key as a string allocating the necessary memory.
|
---|
1602 | *
|
---|
1603 | * @returns VBox status code.
|
---|
1604 | * @retval VERR_VD_VMDK_VALUE_NOT_FOUND if the value could not be found.
|
---|
1605 | * @param pImage The VMDK image state.
|
---|
1606 | * @param pDescriptor The descriptor to fetch the value from.
|
---|
1607 | * @param pszKey The key to get the value from.
|
---|
1608 | * @param ppszValue Where to store the return value, use RTMemTmpFree to
|
---|
1609 | * free.
|
---|
1610 | */
|
---|
1611 | static int vmdkDescBaseGetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1612 | const char *pszKey, char **ppszValue)
|
---|
1613 | {
|
---|
1614 | const char *pszValue;
|
---|
1615 | char *pszValueUnquoted;
|
---|
1616 |
|
---|
1617 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDesc, pszKey,
|
---|
1618 | &pszValue))
|
---|
1619 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1620 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1621 | if (RT_FAILURE(rc))
|
---|
1622 | return rc;
|
---|
1623 | *ppszValue = pszValueUnquoted;
|
---|
1624 | return rc;
|
---|
1625 | }
|
---|
1626 |
|
---|
1627 | static int vmdkDescBaseSetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1628 | const char *pszKey, const char *pszValue)
|
---|
1629 | {
|
---|
1630 | char *pszValueQuoted;
|
---|
1631 |
|
---|
1632 | RTStrAPrintf(&pszValueQuoted, "\"%s\"", pszValue);
|
---|
1633 | if (!pszValueQuoted)
|
---|
1634 | return VERR_NO_STR_MEMORY;
|
---|
1635 | int rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDesc, pszKey,
|
---|
1636 | pszValueQuoted);
|
---|
1637 | RTStrFree(pszValueQuoted);
|
---|
1638 | return rc;
|
---|
1639 | }
|
---|
1640 |
|
---|
1641 | static void vmdkDescExtRemoveDummy(PVMDKIMAGE pImage,
|
---|
1642 | PVMDKDESCRIPTOR pDescriptor)
|
---|
1643 | {
|
---|
1644 | RT_NOREF1(pImage);
|
---|
1645 | unsigned uEntry = pDescriptor->uFirstExtent;
|
---|
1646 | ssize_t cbDiff;
|
---|
1647 |
|
---|
1648 | if (!uEntry)
|
---|
1649 | return;
|
---|
1650 |
|
---|
1651 | cbDiff = strlen(pDescriptor->aLines[uEntry]) + 1;
|
---|
1652 | /* Move everything including \0 in the entry marking the end of buffer. */
|
---|
1653 | memmove(pDescriptor->aLines[uEntry], pDescriptor->aLines[uEntry + 1],
|
---|
1654 | pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[uEntry + 1] + 1);
|
---|
1655 | for (unsigned i = uEntry + 1; i <= pDescriptor->cLines; i++)
|
---|
1656 | {
|
---|
1657 | pDescriptor->aLines[i - 1] = pDescriptor->aLines[i] - cbDiff;
|
---|
1658 | if (pDescriptor->aNextLines[i])
|
---|
1659 | pDescriptor->aNextLines[i - 1] = pDescriptor->aNextLines[i] - 1;
|
---|
1660 | else
|
---|
1661 | pDescriptor->aNextLines[i - 1] = 0;
|
---|
1662 | }
|
---|
1663 | pDescriptor->cLines--;
|
---|
1664 | if (pDescriptor->uFirstDDB)
|
---|
1665 | pDescriptor->uFirstDDB--;
|
---|
1666 |
|
---|
1667 | return;
|
---|
1668 | }
|
---|
1669 |
|
---|
1670 | static int vmdkDescExtInsert(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1671 | VMDKACCESS enmAccess, uint64_t cNominalSectors,
|
---|
1672 | VMDKETYPE enmType, const char *pszBasename,
|
---|
1673 | uint64_t uSectorOffset)
|
---|
1674 | {
|
---|
1675 | static const char *apszAccess[] = { "NOACCESS", "RDONLY", "RW" };
|
---|
1676 | static const char *apszType[] = { "", "SPARSE", "FLAT", "ZERO", "VMFS" };
|
---|
1677 | char *pszTmp;
|
---|
1678 | unsigned uStart = pDescriptor->uFirstExtent, uLast = 0;
|
---|
1679 | char szExt[1024];
|
---|
1680 | ssize_t cbDiff;
|
---|
1681 |
|
---|
1682 | Assert((unsigned)enmAccess < RT_ELEMENTS(apszAccess));
|
---|
1683 | Assert((unsigned)enmType < RT_ELEMENTS(apszType));
|
---|
1684 |
|
---|
1685 | /* Find last entry in extent description. */
|
---|
1686 | while (uStart)
|
---|
1687 | {
|
---|
1688 | if (!pDescriptor->aNextLines[uStart])
|
---|
1689 | uLast = uStart;
|
---|
1690 | uStart = pDescriptor->aNextLines[uStart];
|
---|
1691 | }
|
---|
1692 |
|
---|
1693 | if (enmType == VMDKETYPE_ZERO)
|
---|
1694 | {
|
---|
1695 | RTStrPrintf(szExt, sizeof(szExt), "%s %llu %s ", apszAccess[enmAccess],
|
---|
1696 | cNominalSectors, apszType[enmType]);
|
---|
1697 | }
|
---|
1698 | else if (enmType == VMDKETYPE_FLAT)
|
---|
1699 | {
|
---|
1700 | RTStrPrintf(szExt, sizeof(szExt), "%s %llu %s \"%s\" %llu",
|
---|
1701 | apszAccess[enmAccess], cNominalSectors,
|
---|
1702 | apszType[enmType], pszBasename, uSectorOffset);
|
---|
1703 | }
|
---|
1704 | else
|
---|
1705 | {
|
---|
1706 | RTStrPrintf(szExt, sizeof(szExt), "%s %llu %s \"%s\"",
|
---|
1707 | apszAccess[enmAccess], cNominalSectors,
|
---|
1708 | apszType[enmType], pszBasename);
|
---|
1709 | }
|
---|
1710 | cbDiff = strlen(szExt) + 1;
|
---|
1711 |
|
---|
1712 | /* Check for buffer overflow. */
|
---|
1713 | if ( (pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1)
|
---|
1714 | || ( pDescriptor->aLines[pDescriptor->cLines]
|
---|
1715 | - pDescriptor->aLines[0] > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff))
|
---|
1716 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1717 |
|
---|
1718 | for (unsigned i = pDescriptor->cLines + 1; i > uLast + 1; i--)
|
---|
1719 | {
|
---|
1720 | pDescriptor->aLines[i] = pDescriptor->aLines[i - 1];
|
---|
1721 | if (pDescriptor->aNextLines[i - 1])
|
---|
1722 | pDescriptor->aNextLines[i] = pDescriptor->aNextLines[i - 1] + 1;
|
---|
1723 | else
|
---|
1724 | pDescriptor->aNextLines[i] = 0;
|
---|
1725 | }
|
---|
1726 | uStart = uLast + 1;
|
---|
1727 | pDescriptor->aNextLines[uLast] = uStart;
|
---|
1728 | pDescriptor->aNextLines[uStart] = 0;
|
---|
1729 | pDescriptor->cLines++;
|
---|
1730 | pszTmp = pDescriptor->aLines[uStart];
|
---|
1731 | memmove(pszTmp + cbDiff, pszTmp,
|
---|
1732 | pDescriptor->aLines[pDescriptor->cLines] - pszTmp);
|
---|
1733 | memcpy(pDescriptor->aLines[uStart], szExt, cbDiff);
|
---|
1734 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1735 | pDescriptor->aLines[i] += cbDiff;
|
---|
1736 |
|
---|
1737 | /* Adjust starting line numbers of following descriptor sections. */
|
---|
1738 | if (uStart <= pDescriptor->uFirstDDB)
|
---|
1739 | pDescriptor->uFirstDDB++;
|
---|
1740 |
|
---|
1741 | pDescriptor->fDirty = true;
|
---|
1742 | return VINF_SUCCESS;
|
---|
1743 | }
|
---|
1744 |
|
---|
1745 | /**
|
---|
1746 | * Returns the value of the given key from the DDB as a string allocating
|
---|
1747 | * the necessary memory.
|
---|
1748 | *
|
---|
1749 | * @returns VBox status code.
|
---|
1750 | * @retval VERR_VD_VMDK_VALUE_NOT_FOUND if the value could not be found.
|
---|
1751 | * @param pImage The VMDK image state.
|
---|
1752 | * @param pDescriptor The descriptor to fetch the value from.
|
---|
1753 | * @param pszKey The key to get the value from.
|
---|
1754 | * @param ppszValue Where to store the return value, use RTMemTmpFree to
|
---|
1755 | * free.
|
---|
1756 | */
|
---|
1757 | static int vmdkDescDDBGetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1758 | const char *pszKey, char **ppszValue)
|
---|
1759 | {
|
---|
1760 | const char *pszValue;
|
---|
1761 | char *pszValueUnquoted;
|
---|
1762 |
|
---|
1763 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1764 | &pszValue))
|
---|
1765 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1766 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1767 | if (RT_FAILURE(rc))
|
---|
1768 | return rc;
|
---|
1769 | *ppszValue = pszValueUnquoted;
|
---|
1770 | return rc;
|
---|
1771 | }
|
---|
1772 |
|
---|
1773 | static int vmdkDescDDBGetU32(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1774 | const char *pszKey, uint32_t *puValue)
|
---|
1775 | {
|
---|
1776 | const char *pszValue;
|
---|
1777 | char *pszValueUnquoted;
|
---|
1778 |
|
---|
1779 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1780 | &pszValue))
|
---|
1781 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1782 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1783 | if (RT_FAILURE(rc))
|
---|
1784 | return rc;
|
---|
1785 | rc = RTStrToUInt32Ex(pszValueUnquoted, NULL, 10, puValue);
|
---|
1786 | RTMemTmpFree(pszValueUnquoted);
|
---|
1787 | return rc;
|
---|
1788 | }
|
---|
1789 |
|
---|
1790 | static int vmdkDescDDBGetUuid(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1791 | const char *pszKey, PRTUUID pUuid)
|
---|
1792 | {
|
---|
1793 | const char *pszValue;
|
---|
1794 | char *pszValueUnquoted;
|
---|
1795 |
|
---|
1796 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1797 | &pszValue))
|
---|
1798 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1799 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1800 | if (RT_FAILURE(rc))
|
---|
1801 | return rc;
|
---|
1802 | rc = RTUuidFromStr(pUuid, pszValueUnquoted);
|
---|
1803 | RTMemTmpFree(pszValueUnquoted);
|
---|
1804 | return rc;
|
---|
1805 | }
|
---|
1806 |
|
---|
1807 | static int vmdkDescDDBSetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1808 | const char *pszKey, const char *pszVal)
|
---|
1809 | {
|
---|
1810 | int rc;
|
---|
1811 | char *pszValQuoted;
|
---|
1812 |
|
---|
1813 | if (pszVal)
|
---|
1814 | {
|
---|
1815 | RTStrAPrintf(&pszValQuoted, "\"%s\"", pszVal);
|
---|
1816 | if (!pszValQuoted)
|
---|
1817 | return VERR_NO_STR_MEMORY;
|
---|
1818 | }
|
---|
1819 | else
|
---|
1820 | pszValQuoted = NULL;
|
---|
1821 | rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1822 | pszValQuoted);
|
---|
1823 | if (pszValQuoted)
|
---|
1824 | RTStrFree(pszValQuoted);
|
---|
1825 | return rc;
|
---|
1826 | }
|
---|
1827 |
|
---|
1828 | static int vmdkDescDDBSetUuid(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1829 | const char *pszKey, PCRTUUID pUuid)
|
---|
1830 | {
|
---|
1831 | char *pszUuid;
|
---|
1832 |
|
---|
1833 | RTStrAPrintf(&pszUuid, "\"%RTuuid\"", pUuid);
|
---|
1834 | if (!pszUuid)
|
---|
1835 | return VERR_NO_STR_MEMORY;
|
---|
1836 | int rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1837 | pszUuid);
|
---|
1838 | RTStrFree(pszUuid);
|
---|
1839 | return rc;
|
---|
1840 | }
|
---|
1841 |
|
---|
1842 | static int vmdkDescDDBSetU32(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1843 | const char *pszKey, uint32_t uValue)
|
---|
1844 | {
|
---|
1845 | char *pszValue;
|
---|
1846 |
|
---|
1847 | RTStrAPrintf(&pszValue, "\"%d\"", uValue);
|
---|
1848 | if (!pszValue)
|
---|
1849 | return VERR_NO_STR_MEMORY;
|
---|
1850 | int rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1851 | pszValue);
|
---|
1852 | RTStrFree(pszValue);
|
---|
1853 | return rc;
|
---|
1854 | }
|
---|
1855 |
|
---|
1856 | /**
|
---|
1857 | * Splits the descriptor data into individual lines checking for correct line
|
---|
1858 | * endings and descriptor size.
|
---|
1859 | *
|
---|
1860 | * @returns VBox status code.
|
---|
1861 | * @param pImage The image instance.
|
---|
1862 | * @param pDesc The descriptor.
|
---|
1863 | * @param pszTmp The raw descriptor data from the image.
|
---|
1864 | */
|
---|
1865 | static int vmdkDescSplitLines(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDesc, char *pszTmp)
|
---|
1866 | {
|
---|
1867 | unsigned cLine = 0;
|
---|
1868 | int rc = VINF_SUCCESS;
|
---|
1869 |
|
---|
1870 | while ( RT_SUCCESS(rc)
|
---|
1871 | && *pszTmp != '\0')
|
---|
1872 | {
|
---|
1873 | pDesc->aLines[cLine++] = pszTmp;
|
---|
1874 | if (cLine >= VMDK_DESCRIPTOR_LINES_MAX)
|
---|
1875 | {
|
---|
1876 | vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1877 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
1878 | break;
|
---|
1879 | }
|
---|
1880 |
|
---|
1881 | while (*pszTmp != '\0' && *pszTmp != '\n')
|
---|
1882 | {
|
---|
1883 | if (*pszTmp == '\r')
|
---|
1884 | {
|
---|
1885 | if (*(pszTmp + 1) != '\n')
|
---|
1886 | {
|
---|
1887 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: unsupported end of line in descriptor in '%s'"), pImage->pszFilename);
|
---|
1888 | break;
|
---|
1889 | }
|
---|
1890 | else
|
---|
1891 | {
|
---|
1892 | /* Get rid of CR character. */
|
---|
1893 | *pszTmp = '\0';
|
---|
1894 | }
|
---|
1895 | }
|
---|
1896 | pszTmp++;
|
---|
1897 | }
|
---|
1898 |
|
---|
1899 | if (RT_FAILURE(rc))
|
---|
1900 | break;
|
---|
1901 |
|
---|
1902 | /* Get rid of LF character. */
|
---|
1903 | if (*pszTmp == '\n')
|
---|
1904 | {
|
---|
1905 | *pszTmp = '\0';
|
---|
1906 | pszTmp++;
|
---|
1907 | }
|
---|
1908 | }
|
---|
1909 |
|
---|
1910 | if (RT_SUCCESS(rc))
|
---|
1911 | {
|
---|
1912 | pDesc->cLines = cLine;
|
---|
1913 | /* Pointer right after the end of the used part of the buffer. */
|
---|
1914 | pDesc->aLines[cLine] = pszTmp;
|
---|
1915 | }
|
---|
1916 |
|
---|
1917 | return rc;
|
---|
1918 | }
|
---|
1919 |
|
---|
1920 | static int vmdkPreprocessDescriptor(PVMDKIMAGE pImage, char *pDescData,
|
---|
1921 | size_t cbDescData, PVMDKDESCRIPTOR pDescriptor)
|
---|
1922 | {
|
---|
1923 | pDescriptor->cbDescAlloc = cbDescData;
|
---|
1924 | int rc = vmdkDescSplitLines(pImage, pDescriptor, pDescData);
|
---|
1925 | if (RT_SUCCESS(rc))
|
---|
1926 | {
|
---|
1927 | if ( strcmp(pDescriptor->aLines[0], "# Disk DescriptorFile")
|
---|
1928 | && strcmp(pDescriptor->aLines[0], "# Disk Descriptor File"))
|
---|
1929 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1930 | N_("VMDK: descriptor does not start as expected in '%s'"), pImage->pszFilename);
|
---|
1931 | else
|
---|
1932 | {
|
---|
1933 | unsigned uLastNonEmptyLine = 0;
|
---|
1934 |
|
---|
1935 | /* Initialize those, because we need to be able to reopen an image. */
|
---|
1936 | pDescriptor->uFirstDesc = 0;
|
---|
1937 | pDescriptor->uFirstExtent = 0;
|
---|
1938 | pDescriptor->uFirstDDB = 0;
|
---|
1939 | for (unsigned i = 0; i < pDescriptor->cLines; i++)
|
---|
1940 | {
|
---|
1941 | if (*pDescriptor->aLines[i] != '#' && *pDescriptor->aLines[i] != '\0')
|
---|
1942 | {
|
---|
1943 | if ( !strncmp(pDescriptor->aLines[i], "RW", 2)
|
---|
1944 | || !strncmp(pDescriptor->aLines[i], "RDONLY", 6)
|
---|
1945 | || !strncmp(pDescriptor->aLines[i], "NOACCESS", 8) )
|
---|
1946 | {
|
---|
1947 | /* An extent descriptor. */
|
---|
1948 | if (!pDescriptor->uFirstDesc || pDescriptor->uFirstDDB)
|
---|
1949 | {
|
---|
1950 | /* Incorrect ordering of entries. */
|
---|
1951 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1952 | N_("VMDK: incorrect ordering of entries in descriptor in '%s'"), pImage->pszFilename);
|
---|
1953 | break;
|
---|
1954 | }
|
---|
1955 | if (!pDescriptor->uFirstExtent)
|
---|
1956 | {
|
---|
1957 | pDescriptor->uFirstExtent = i;
|
---|
1958 | uLastNonEmptyLine = 0;
|
---|
1959 | }
|
---|
1960 | }
|
---|
1961 | else if (!strncmp(pDescriptor->aLines[i], "ddb.", 4))
|
---|
1962 | {
|
---|
1963 | /* A disk database entry. */
|
---|
1964 | if (!pDescriptor->uFirstDesc || !pDescriptor->uFirstExtent)
|
---|
1965 | {
|
---|
1966 | /* Incorrect ordering of entries. */
|
---|
1967 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1968 | N_("VMDK: incorrect ordering of entries in descriptor in '%s'"), pImage->pszFilename);
|
---|
1969 | break;
|
---|
1970 | }
|
---|
1971 | if (!pDescriptor->uFirstDDB)
|
---|
1972 | {
|
---|
1973 | pDescriptor->uFirstDDB = i;
|
---|
1974 | uLastNonEmptyLine = 0;
|
---|
1975 | }
|
---|
1976 | }
|
---|
1977 | else
|
---|
1978 | {
|
---|
1979 | /* A normal entry. */
|
---|
1980 | if (pDescriptor->uFirstExtent || pDescriptor->uFirstDDB)
|
---|
1981 | {
|
---|
1982 | /* Incorrect ordering of entries. */
|
---|
1983 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1984 | N_("VMDK: incorrect ordering of entries in descriptor in '%s'"), pImage->pszFilename);
|
---|
1985 | break;
|
---|
1986 | }
|
---|
1987 | if (!pDescriptor->uFirstDesc)
|
---|
1988 | {
|
---|
1989 | pDescriptor->uFirstDesc = i;
|
---|
1990 | uLastNonEmptyLine = 0;
|
---|
1991 | }
|
---|
1992 | }
|
---|
1993 | if (uLastNonEmptyLine)
|
---|
1994 | pDescriptor->aNextLines[uLastNonEmptyLine] = i;
|
---|
1995 | uLastNonEmptyLine = i;
|
---|
1996 | }
|
---|
1997 | }
|
---|
1998 | }
|
---|
1999 | }
|
---|
2000 |
|
---|
2001 | return rc;
|
---|
2002 | }
|
---|
2003 |
|
---|
2004 | static int vmdkDescSetPCHSGeometry(PVMDKIMAGE pImage,
|
---|
2005 | PCVDGEOMETRY pPCHSGeometry)
|
---|
2006 | {
|
---|
2007 | int rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2008 | VMDK_DDB_GEO_PCHS_CYLINDERS,
|
---|
2009 | pPCHSGeometry->cCylinders);
|
---|
2010 | if (RT_FAILURE(rc))
|
---|
2011 | return rc;
|
---|
2012 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2013 | VMDK_DDB_GEO_PCHS_HEADS,
|
---|
2014 | pPCHSGeometry->cHeads);
|
---|
2015 | if (RT_FAILURE(rc))
|
---|
2016 | return rc;
|
---|
2017 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2018 | VMDK_DDB_GEO_PCHS_SECTORS,
|
---|
2019 | pPCHSGeometry->cSectors);
|
---|
2020 | return rc;
|
---|
2021 | }
|
---|
2022 |
|
---|
2023 | static int vmdkDescSetLCHSGeometry(PVMDKIMAGE pImage,
|
---|
2024 | PCVDGEOMETRY pLCHSGeometry)
|
---|
2025 | {
|
---|
2026 | int rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2027 | VMDK_DDB_GEO_LCHS_CYLINDERS,
|
---|
2028 | pLCHSGeometry->cCylinders);
|
---|
2029 | if (RT_FAILURE(rc))
|
---|
2030 | return rc;
|
---|
2031 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2032 | VMDK_DDB_GEO_LCHS_HEADS,
|
---|
2033 |
|
---|
2034 | pLCHSGeometry->cHeads);
|
---|
2035 | if (RT_FAILURE(rc))
|
---|
2036 | return rc;
|
---|
2037 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2038 | VMDK_DDB_GEO_LCHS_SECTORS,
|
---|
2039 | pLCHSGeometry->cSectors);
|
---|
2040 | return rc;
|
---|
2041 | }
|
---|
2042 |
|
---|
2043 | static int vmdkCreateDescriptor(PVMDKIMAGE pImage, char *pDescData,
|
---|
2044 | size_t cbDescData, PVMDKDESCRIPTOR pDescriptor)
|
---|
2045 | {
|
---|
2046 | pDescriptor->uFirstDesc = 0;
|
---|
2047 | pDescriptor->uFirstExtent = 0;
|
---|
2048 | pDescriptor->uFirstDDB = 0;
|
---|
2049 | pDescriptor->cLines = 0;
|
---|
2050 | pDescriptor->cbDescAlloc = cbDescData;
|
---|
2051 | pDescriptor->fDirty = false;
|
---|
2052 | pDescriptor->aLines[pDescriptor->cLines] = pDescData;
|
---|
2053 | memset(pDescriptor->aNextLines, '\0', sizeof(pDescriptor->aNextLines));
|
---|
2054 |
|
---|
2055 | int rc = vmdkDescInitStr(pImage, pDescriptor, "# Disk DescriptorFile");
|
---|
2056 | if (RT_SUCCESS(rc))
|
---|
2057 | rc = vmdkDescInitStr(pImage, pDescriptor, "version=1");
|
---|
2058 | if (RT_SUCCESS(rc))
|
---|
2059 | {
|
---|
2060 | pDescriptor->uFirstDesc = pDescriptor->cLines - 1;
|
---|
2061 | rc = vmdkDescInitStr(pImage, pDescriptor, "");
|
---|
2062 | }
|
---|
2063 | if (RT_SUCCESS(rc))
|
---|
2064 | rc = vmdkDescInitStr(pImage, pDescriptor, "# Extent description");
|
---|
2065 | if (RT_SUCCESS(rc))
|
---|
2066 | rc = vmdkDescInitStr(pImage, pDescriptor, "NOACCESS 0 ZERO ");
|
---|
2067 | if (RT_SUCCESS(rc))
|
---|
2068 | {
|
---|
2069 | pDescriptor->uFirstExtent = pDescriptor->cLines - 1;
|
---|
2070 | rc = vmdkDescInitStr(pImage, pDescriptor, "");
|
---|
2071 | }
|
---|
2072 | if (RT_SUCCESS(rc))
|
---|
2073 | {
|
---|
2074 | /* The trailing space is created by VMware, too. */
|
---|
2075 | rc = vmdkDescInitStr(pImage, pDescriptor, "# The disk Data Base ");
|
---|
2076 | }
|
---|
2077 | if (RT_SUCCESS(rc))
|
---|
2078 | rc = vmdkDescInitStr(pImage, pDescriptor, "#DDB");
|
---|
2079 | if (RT_SUCCESS(rc))
|
---|
2080 | rc = vmdkDescInitStr(pImage, pDescriptor, "");
|
---|
2081 | if (RT_SUCCESS(rc))
|
---|
2082 | rc = vmdkDescInitStr(pImage, pDescriptor, "ddb.virtualHWVersion = \"4\"");
|
---|
2083 | if (RT_SUCCESS(rc))
|
---|
2084 | {
|
---|
2085 | pDescriptor->uFirstDDB = pDescriptor->cLines - 1;
|
---|
2086 |
|
---|
2087 | /* Now that the framework is in place, use the normal functions to insert
|
---|
2088 | * the remaining keys. */
|
---|
2089 | char szBuf[9];
|
---|
2090 | RTStrPrintf(szBuf, sizeof(szBuf), "%08x", RTRandU32());
|
---|
2091 | rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDesc,
|
---|
2092 | "CID", szBuf);
|
---|
2093 | }
|
---|
2094 | if (RT_SUCCESS(rc))
|
---|
2095 | rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDesc,
|
---|
2096 | "parentCID", "ffffffff");
|
---|
2097 | if (RT_SUCCESS(rc))
|
---|
2098 | rc = vmdkDescDDBSetStr(pImage, pDescriptor, "ddb.adapterType", "ide");
|
---|
2099 |
|
---|
2100 | return rc;
|
---|
2101 | }
|
---|
2102 |
|
---|
2103 | static int vmdkParseDescriptor(PVMDKIMAGE pImage, char *pDescData, size_t cbDescData)
|
---|
2104 | {
|
---|
2105 | int rc;
|
---|
2106 | unsigned cExtents;
|
---|
2107 | unsigned uLine;
|
---|
2108 | unsigned i;
|
---|
2109 |
|
---|
2110 | rc = vmdkPreprocessDescriptor(pImage, pDescData, cbDescData,
|
---|
2111 | &pImage->Descriptor);
|
---|
2112 | if (RT_FAILURE(rc))
|
---|
2113 | return rc;
|
---|
2114 |
|
---|
2115 | /* Check version, must be 1. */
|
---|
2116 | uint32_t uVersion;
|
---|
2117 | rc = vmdkDescBaseGetU32(&pImage->Descriptor, "version", &uVersion);
|
---|
2118 | if (RT_FAILURE(rc))
|
---|
2119 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error finding key 'version' in descriptor in '%s'"), pImage->pszFilename);
|
---|
2120 | if (uVersion != 1)
|
---|
2121 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_UNSUPPORTED_VERSION, RT_SRC_POS, N_("VMDK: unsupported format version in descriptor in '%s'"), pImage->pszFilename);
|
---|
2122 |
|
---|
2123 | /* Get image creation type and determine image flags. */
|
---|
2124 | char *pszCreateType = NULL; /* initialized to make gcc shut up */
|
---|
2125 | rc = vmdkDescBaseGetStr(pImage, &pImage->Descriptor, "createType",
|
---|
2126 | &pszCreateType);
|
---|
2127 | if (RT_FAILURE(rc))
|
---|
2128 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot get image type from descriptor in '%s'"), pImage->pszFilename);
|
---|
2129 | if ( !strcmp(pszCreateType, "twoGbMaxExtentSparse")
|
---|
2130 | || !strcmp(pszCreateType, "twoGbMaxExtentFlat"))
|
---|
2131 | pImage->uImageFlags |= VD_VMDK_IMAGE_FLAGS_SPLIT_2G;
|
---|
2132 | else if ( !strcmp(pszCreateType, "partitionedDevice")
|
---|
2133 | || !strcmp(pszCreateType, "fullDevice"))
|
---|
2134 | pImage->uImageFlags |= VD_VMDK_IMAGE_FLAGS_RAWDISK;
|
---|
2135 | else if (!strcmp(pszCreateType, "streamOptimized"))
|
---|
2136 | pImage->uImageFlags |= VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED;
|
---|
2137 | else if (!strcmp(pszCreateType, "vmfs"))
|
---|
2138 | pImage->uImageFlags |= VD_IMAGE_FLAGS_FIXED | VD_VMDK_IMAGE_FLAGS_ESX;
|
---|
2139 | RTMemTmpFree(pszCreateType);
|
---|
2140 |
|
---|
2141 | /* Count the number of extent config entries. */
|
---|
2142 | for (uLine = pImage->Descriptor.uFirstExtent, cExtents = 0;
|
---|
2143 | uLine != 0;
|
---|
2144 | uLine = pImage->Descriptor.aNextLines[uLine], cExtents++)
|
---|
2145 | /* nothing */;
|
---|
2146 |
|
---|
2147 | if (!pImage->pDescData && cExtents != 1)
|
---|
2148 | {
|
---|
2149 | /* Monolithic image, must have only one extent (already opened). */
|
---|
2150 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: monolithic image may only have one extent in '%s'"), pImage->pszFilename);
|
---|
2151 | }
|
---|
2152 |
|
---|
2153 | if (pImage->pDescData)
|
---|
2154 | {
|
---|
2155 | /* Non-monolithic image, extents need to be allocated. */
|
---|
2156 | rc = vmdkCreateExtents(pImage, cExtents);
|
---|
2157 | if (RT_FAILURE(rc))
|
---|
2158 | return rc;
|
---|
2159 | }
|
---|
2160 |
|
---|
2161 | for (i = 0, uLine = pImage->Descriptor.uFirstExtent;
|
---|
2162 | i < cExtents; i++, uLine = pImage->Descriptor.aNextLines[uLine])
|
---|
2163 | {
|
---|
2164 | char *pszLine = pImage->Descriptor.aLines[uLine];
|
---|
2165 |
|
---|
2166 | /* Access type of the extent. */
|
---|
2167 | if (!strncmp(pszLine, "RW", 2))
|
---|
2168 | {
|
---|
2169 | pImage->pExtents[i].enmAccess = VMDKACCESS_READWRITE;
|
---|
2170 | pszLine += 2;
|
---|
2171 | }
|
---|
2172 | else if (!strncmp(pszLine, "RDONLY", 6))
|
---|
2173 | {
|
---|
2174 | pImage->pExtents[i].enmAccess = VMDKACCESS_READONLY;
|
---|
2175 | pszLine += 6;
|
---|
2176 | }
|
---|
2177 | else if (!strncmp(pszLine, "NOACCESS", 8))
|
---|
2178 | {
|
---|
2179 | pImage->pExtents[i].enmAccess = VMDKACCESS_NOACCESS;
|
---|
2180 | pszLine += 8;
|
---|
2181 | }
|
---|
2182 | else
|
---|
2183 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2184 | if (*pszLine++ != ' ')
|
---|
2185 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2186 |
|
---|
2187 | /* Nominal size of the extent. */
|
---|
2188 | rc = RTStrToUInt64Ex(pszLine, &pszLine, 10,
|
---|
2189 | &pImage->pExtents[i].cNominalSectors);
|
---|
2190 | if (RT_FAILURE(rc))
|
---|
2191 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2192 | if (*pszLine++ != ' ')
|
---|
2193 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2194 |
|
---|
2195 | /* Type of the extent. */
|
---|
2196 | if (!strncmp(pszLine, "SPARSE", 6))
|
---|
2197 | {
|
---|
2198 | pImage->pExtents[i].enmType = VMDKETYPE_HOSTED_SPARSE;
|
---|
2199 | pszLine += 6;
|
---|
2200 | }
|
---|
2201 | else if (!strncmp(pszLine, "FLAT", 4))
|
---|
2202 | {
|
---|
2203 | pImage->pExtents[i].enmType = VMDKETYPE_FLAT;
|
---|
2204 | pszLine += 4;
|
---|
2205 | }
|
---|
2206 | else if (!strncmp(pszLine, "ZERO", 4))
|
---|
2207 | {
|
---|
2208 | pImage->pExtents[i].enmType = VMDKETYPE_ZERO;
|
---|
2209 | pszLine += 4;
|
---|
2210 | }
|
---|
2211 | else if (!strncmp(pszLine, "VMFS", 4))
|
---|
2212 | {
|
---|
2213 | pImage->pExtents[i].enmType = VMDKETYPE_VMFS;
|
---|
2214 | pszLine += 4;
|
---|
2215 | }
|
---|
2216 | else
|
---|
2217 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2218 |
|
---|
2219 | if (pImage->pExtents[i].enmType == VMDKETYPE_ZERO)
|
---|
2220 | {
|
---|
2221 | /* This one has no basename or offset. */
|
---|
2222 | if (*pszLine == ' ')
|
---|
2223 | pszLine++;
|
---|
2224 | if (*pszLine != '\0')
|
---|
2225 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2226 | pImage->pExtents[i].pszBasename = NULL;
|
---|
2227 | }
|
---|
2228 | else
|
---|
2229 | {
|
---|
2230 | /* All other extent types have basename and optional offset. */
|
---|
2231 | if (*pszLine++ != ' ')
|
---|
2232 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2233 |
|
---|
2234 | /* Basename of the image. Surrounded by quotes. */
|
---|
2235 | char *pszBasename;
|
---|
2236 | rc = vmdkStringUnquote(pImage, pszLine, &pszBasename, &pszLine);
|
---|
2237 | if (RT_FAILURE(rc))
|
---|
2238 | return rc;
|
---|
2239 | pImage->pExtents[i].pszBasename = pszBasename;
|
---|
2240 | if (*pszLine == ' ')
|
---|
2241 | {
|
---|
2242 | pszLine++;
|
---|
2243 | if (*pszLine != '\0')
|
---|
2244 | {
|
---|
2245 | /* Optional offset in extent specified. */
|
---|
2246 | rc = RTStrToUInt64Ex(pszLine, &pszLine, 10,
|
---|
2247 | &pImage->pExtents[i].uSectorOffset);
|
---|
2248 | if (RT_FAILURE(rc))
|
---|
2249 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2250 | }
|
---|
2251 | }
|
---|
2252 |
|
---|
2253 | if (*pszLine != '\0')
|
---|
2254 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2255 | }
|
---|
2256 | }
|
---|
2257 |
|
---|
2258 | /* Determine PCHS geometry (autogenerate if necessary). */
|
---|
2259 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2260 | VMDK_DDB_GEO_PCHS_CYLINDERS,
|
---|
2261 | &pImage->PCHSGeometry.cCylinders);
|
---|
2262 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2263 | pImage->PCHSGeometry.cCylinders = 0;
|
---|
2264 | else if (RT_FAILURE(rc))
|
---|
2265 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting PCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2266 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2267 | VMDK_DDB_GEO_PCHS_HEADS,
|
---|
2268 | &pImage->PCHSGeometry.cHeads);
|
---|
2269 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2270 | pImage->PCHSGeometry.cHeads = 0;
|
---|
2271 | else if (RT_FAILURE(rc))
|
---|
2272 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting PCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2273 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2274 | VMDK_DDB_GEO_PCHS_SECTORS,
|
---|
2275 | &pImage->PCHSGeometry.cSectors);
|
---|
2276 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2277 | pImage->PCHSGeometry.cSectors = 0;
|
---|
2278 | else if (RT_FAILURE(rc))
|
---|
2279 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting PCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2280 | if ( pImage->PCHSGeometry.cCylinders == 0
|
---|
2281 | || pImage->PCHSGeometry.cHeads == 0
|
---|
2282 | || pImage->PCHSGeometry.cHeads > 16
|
---|
2283 | || pImage->PCHSGeometry.cSectors == 0
|
---|
2284 | || pImage->PCHSGeometry.cSectors > 63)
|
---|
2285 | {
|
---|
2286 | /* Mark PCHS geometry as not yet valid (can't do the calculation here
|
---|
2287 | * as the total image size isn't known yet). */
|
---|
2288 | pImage->PCHSGeometry.cCylinders = 0;
|
---|
2289 | pImage->PCHSGeometry.cHeads = 16;
|
---|
2290 | pImage->PCHSGeometry.cSectors = 63;
|
---|
2291 | }
|
---|
2292 |
|
---|
2293 | /* Determine LCHS geometry (set to 0 if not specified). */
|
---|
2294 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2295 | VMDK_DDB_GEO_LCHS_CYLINDERS,
|
---|
2296 | &pImage->LCHSGeometry.cCylinders);
|
---|
2297 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2298 | pImage->LCHSGeometry.cCylinders = 0;
|
---|
2299 | else if (RT_FAILURE(rc))
|
---|
2300 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting LCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2301 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2302 | VMDK_DDB_GEO_LCHS_HEADS,
|
---|
2303 | &pImage->LCHSGeometry.cHeads);
|
---|
2304 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2305 | pImage->LCHSGeometry.cHeads = 0;
|
---|
2306 | else if (RT_FAILURE(rc))
|
---|
2307 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting LCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2308 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2309 | VMDK_DDB_GEO_LCHS_SECTORS,
|
---|
2310 | &pImage->LCHSGeometry.cSectors);
|
---|
2311 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2312 | pImage->LCHSGeometry.cSectors = 0;
|
---|
2313 | else if (RT_FAILURE(rc))
|
---|
2314 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting LCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2315 | if ( pImage->LCHSGeometry.cCylinders == 0
|
---|
2316 | || pImage->LCHSGeometry.cHeads == 0
|
---|
2317 | || pImage->LCHSGeometry.cSectors == 0)
|
---|
2318 | {
|
---|
2319 | pImage->LCHSGeometry.cCylinders = 0;
|
---|
2320 | pImage->LCHSGeometry.cHeads = 0;
|
---|
2321 | pImage->LCHSGeometry.cSectors = 0;
|
---|
2322 | }
|
---|
2323 |
|
---|
2324 | /* Get image UUID. */
|
---|
2325 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor, VMDK_DDB_IMAGE_UUID,
|
---|
2326 | &pImage->ImageUuid);
|
---|
2327 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2328 | {
|
---|
2329 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2330 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2331 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2332 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2333 | RTUuidClear(&pImage->ImageUuid);
|
---|
2334 | else
|
---|
2335 | {
|
---|
2336 | rc = RTUuidCreate(&pImage->ImageUuid);
|
---|
2337 | if (RT_FAILURE(rc))
|
---|
2338 | return rc;
|
---|
2339 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2340 | VMDK_DDB_IMAGE_UUID, &pImage->ImageUuid);
|
---|
2341 | if (RT_FAILURE(rc))
|
---|
2342 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing image UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2343 | }
|
---|
2344 | }
|
---|
2345 | else if (RT_FAILURE(rc))
|
---|
2346 | return rc;
|
---|
2347 |
|
---|
2348 | /* Get image modification UUID. */
|
---|
2349 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor,
|
---|
2350 | VMDK_DDB_MODIFICATION_UUID,
|
---|
2351 | &pImage->ModificationUuid);
|
---|
2352 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2353 | {
|
---|
2354 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2355 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2356 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2357 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2358 | RTUuidClear(&pImage->ModificationUuid);
|
---|
2359 | else
|
---|
2360 | {
|
---|
2361 | rc = RTUuidCreate(&pImage->ModificationUuid);
|
---|
2362 | if (RT_FAILURE(rc))
|
---|
2363 | return rc;
|
---|
2364 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2365 | VMDK_DDB_MODIFICATION_UUID,
|
---|
2366 | &pImage->ModificationUuid);
|
---|
2367 | if (RT_FAILURE(rc))
|
---|
2368 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing image modification UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2369 | }
|
---|
2370 | }
|
---|
2371 | else if (RT_FAILURE(rc))
|
---|
2372 | return rc;
|
---|
2373 |
|
---|
2374 | /* Get UUID of parent image. */
|
---|
2375 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor, VMDK_DDB_PARENT_UUID,
|
---|
2376 | &pImage->ParentUuid);
|
---|
2377 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2378 | {
|
---|
2379 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2380 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2381 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2382 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2383 | RTUuidClear(&pImage->ParentUuid);
|
---|
2384 | else
|
---|
2385 | {
|
---|
2386 | rc = RTUuidClear(&pImage->ParentUuid);
|
---|
2387 | if (RT_FAILURE(rc))
|
---|
2388 | return rc;
|
---|
2389 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2390 | VMDK_DDB_PARENT_UUID, &pImage->ParentUuid);
|
---|
2391 | if (RT_FAILURE(rc))
|
---|
2392 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing parent UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2393 | }
|
---|
2394 | }
|
---|
2395 | else if (RT_FAILURE(rc))
|
---|
2396 | return rc;
|
---|
2397 |
|
---|
2398 | /* Get parent image modification UUID. */
|
---|
2399 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor,
|
---|
2400 | VMDK_DDB_PARENT_MODIFICATION_UUID,
|
---|
2401 | &pImage->ParentModificationUuid);
|
---|
2402 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2403 | {
|
---|
2404 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2405 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2406 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2407 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2408 | RTUuidClear(&pImage->ParentModificationUuid);
|
---|
2409 | else
|
---|
2410 | {
|
---|
2411 | RTUuidClear(&pImage->ParentModificationUuid);
|
---|
2412 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2413 | VMDK_DDB_PARENT_MODIFICATION_UUID,
|
---|
2414 | &pImage->ParentModificationUuid);
|
---|
2415 | if (RT_FAILURE(rc))
|
---|
2416 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing parent modification UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2417 | }
|
---|
2418 | }
|
---|
2419 | else if (RT_FAILURE(rc))
|
---|
2420 | return rc;
|
---|
2421 |
|
---|
2422 | return VINF_SUCCESS;
|
---|
2423 | }
|
---|
2424 |
|
---|
2425 | /**
|
---|
2426 | * Internal : Prepares the descriptor to write to the image.
|
---|
2427 | */
|
---|
2428 | static int vmdkDescriptorPrepare(PVMDKIMAGE pImage, uint64_t cbLimit,
|
---|
2429 | void **ppvData, size_t *pcbData)
|
---|
2430 | {
|
---|
2431 | int rc = VINF_SUCCESS;
|
---|
2432 |
|
---|
2433 | /*
|
---|
2434 | * Allocate temporary descriptor buffer.
|
---|
2435 | * In case there is no limit allocate a default
|
---|
2436 | * and increase if required.
|
---|
2437 | */
|
---|
2438 | size_t cbDescriptor = cbLimit ? cbLimit : 4 * _1K;
|
---|
2439 | char *pszDescriptor = (char *)RTMemAllocZ(cbDescriptor);
|
---|
2440 | size_t offDescriptor = 0;
|
---|
2441 |
|
---|
2442 | if (!pszDescriptor)
|
---|
2443 | return VERR_NO_MEMORY;
|
---|
2444 |
|
---|
2445 | for (unsigned i = 0; i < pImage->Descriptor.cLines; i++)
|
---|
2446 | {
|
---|
2447 | const char *psz = pImage->Descriptor.aLines[i];
|
---|
2448 | size_t cb = strlen(psz);
|
---|
2449 |
|
---|
2450 | /*
|
---|
2451 | * Increase the descriptor if there is no limit and
|
---|
2452 | * there is not enough room left for this line.
|
---|
2453 | */
|
---|
2454 | if (offDescriptor + cb + 1 > cbDescriptor)
|
---|
2455 | {
|
---|
2456 | if (cbLimit)
|
---|
2457 | {
|
---|
2458 | rc = vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too long in '%s'"), pImage->pszFilename);
|
---|
2459 | break;
|
---|
2460 | }
|
---|
2461 | else
|
---|
2462 | {
|
---|
2463 | char *pszDescriptorNew = NULL;
|
---|
2464 | LogFlow(("Increasing descriptor cache\n"));
|
---|
2465 |
|
---|
2466 | pszDescriptorNew = (char *)RTMemRealloc(pszDescriptor, cbDescriptor + cb + 4 * _1K);
|
---|
2467 | if (!pszDescriptorNew)
|
---|
2468 | {
|
---|
2469 | rc = VERR_NO_MEMORY;
|
---|
2470 | break;
|
---|
2471 | }
|
---|
2472 | pszDescriptor = pszDescriptorNew;
|
---|
2473 | cbDescriptor += cb + 4 * _1K;
|
---|
2474 | }
|
---|
2475 | }
|
---|
2476 |
|
---|
2477 | if (cb > 0)
|
---|
2478 | {
|
---|
2479 | memcpy(pszDescriptor + offDescriptor, psz, cb);
|
---|
2480 | offDescriptor += cb;
|
---|
2481 | }
|
---|
2482 |
|
---|
2483 | memcpy(pszDescriptor + offDescriptor, "\n", 1);
|
---|
2484 | offDescriptor++;
|
---|
2485 | }
|
---|
2486 |
|
---|
2487 | if (RT_SUCCESS(rc))
|
---|
2488 | {
|
---|
2489 | *ppvData = pszDescriptor;
|
---|
2490 | *pcbData = offDescriptor;
|
---|
2491 | }
|
---|
2492 | else if (pszDescriptor)
|
---|
2493 | RTMemFree(pszDescriptor);
|
---|
2494 |
|
---|
2495 | return rc;
|
---|
2496 | }
|
---|
2497 |
|
---|
2498 | /**
|
---|
2499 | * Internal: write/update the descriptor part of the image.
|
---|
2500 | */
|
---|
2501 | static int vmdkWriteDescriptor(PVMDKIMAGE pImage, PVDIOCTX pIoCtx)
|
---|
2502 | {
|
---|
2503 | int rc = VINF_SUCCESS;
|
---|
2504 | uint64_t cbLimit;
|
---|
2505 | uint64_t uOffset;
|
---|
2506 | PVMDKFILE pDescFile;
|
---|
2507 | void *pvDescriptor = NULL;
|
---|
2508 | size_t cbDescriptor;
|
---|
2509 |
|
---|
2510 | if (pImage->pDescData)
|
---|
2511 | {
|
---|
2512 | /* Separate descriptor file. */
|
---|
2513 | uOffset = 0;
|
---|
2514 | cbLimit = 0;
|
---|
2515 | pDescFile = pImage->pFile;
|
---|
2516 | }
|
---|
2517 | else
|
---|
2518 | {
|
---|
2519 | /* Embedded descriptor file. */
|
---|
2520 | uOffset = VMDK_SECTOR2BYTE(pImage->pExtents[0].uDescriptorSector);
|
---|
2521 | cbLimit = VMDK_SECTOR2BYTE(pImage->pExtents[0].cDescriptorSectors);
|
---|
2522 | pDescFile = pImage->pExtents[0].pFile;
|
---|
2523 | }
|
---|
2524 | /* Bail out if there is no file to write to. */
|
---|
2525 | if (pDescFile == NULL)
|
---|
2526 | return VERR_INVALID_PARAMETER;
|
---|
2527 |
|
---|
2528 | rc = vmdkDescriptorPrepare(pImage, cbLimit, &pvDescriptor, &cbDescriptor);
|
---|
2529 | if (RT_SUCCESS(rc))
|
---|
2530 | {
|
---|
2531 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pDescFile->pStorage,
|
---|
2532 | uOffset, pvDescriptor,
|
---|
2533 | cbLimit ? cbLimit : cbDescriptor,
|
---|
2534 | pIoCtx, NULL, NULL);
|
---|
2535 | if ( RT_FAILURE(rc)
|
---|
2536 | && rc != VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
2537 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error writing descriptor in '%s'"), pImage->pszFilename);
|
---|
2538 | }
|
---|
2539 |
|
---|
2540 | if (RT_SUCCESS(rc) && !cbLimit)
|
---|
2541 | {
|
---|
2542 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pDescFile->pStorage, cbDescriptor);
|
---|
2543 | if (RT_FAILURE(rc))
|
---|
2544 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error truncating descriptor in '%s'"), pImage->pszFilename);
|
---|
2545 | }
|
---|
2546 |
|
---|
2547 | if (RT_SUCCESS(rc))
|
---|
2548 | pImage->Descriptor.fDirty = false;
|
---|
2549 |
|
---|
2550 | if (pvDescriptor)
|
---|
2551 | RTMemFree(pvDescriptor);
|
---|
2552 | return rc;
|
---|
2553 |
|
---|
2554 | }
|
---|
2555 |
|
---|
2556 | /**
|
---|
2557 | * Internal: validate the consistency check values in a binary header.
|
---|
2558 | */
|
---|
2559 | static int vmdkValidateHeader(PVMDKIMAGE pImage, PVMDKEXTENT pExtent, const SparseExtentHeader *pHeader)
|
---|
2560 | {
|
---|
2561 | int rc = VINF_SUCCESS;
|
---|
2562 | if (RT_LE2H_U32(pHeader->magicNumber) != VMDK_SPARSE_MAGICNUMBER)
|
---|
2563 | {
|
---|
2564 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: incorrect magic in sparse extent header in '%s'"), pExtent->pszFullname);
|
---|
2565 | return rc;
|
---|
2566 | }
|
---|
2567 | if (RT_LE2H_U32(pHeader->version) != 1 && RT_LE2H_U32(pHeader->version) != 3)
|
---|
2568 | {
|
---|
2569 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_UNSUPPORTED_VERSION, RT_SRC_POS, N_("VMDK: incorrect version in sparse extent header in '%s', not a VMDK 1.0/1.1 conforming file"), pExtent->pszFullname);
|
---|
2570 | return rc;
|
---|
2571 | }
|
---|
2572 | if ( (RT_LE2H_U32(pHeader->flags) & 1)
|
---|
2573 | && ( pHeader->singleEndLineChar != '\n'
|
---|
2574 | || pHeader->nonEndLineChar != ' '
|
---|
2575 | || pHeader->doubleEndLineChar1 != '\r'
|
---|
2576 | || pHeader->doubleEndLineChar2 != '\n') )
|
---|
2577 | {
|
---|
2578 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: corrupted by CR/LF translation in '%s'"), pExtent->pszFullname);
|
---|
2579 | return rc;
|
---|
2580 | }
|
---|
2581 | return rc;
|
---|
2582 | }
|
---|
2583 |
|
---|
2584 | /**
|
---|
2585 | * Internal: read metadata belonging to an extent with binary header, i.e.
|
---|
2586 | * as found in monolithic files.
|
---|
2587 | */
|
---|
2588 | static int vmdkReadBinaryMetaExtent(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
2589 | bool fMagicAlreadyRead)
|
---|
2590 | {
|
---|
2591 | SparseExtentHeader Header;
|
---|
2592 | int rc;
|
---|
2593 |
|
---|
2594 | if (!fMagicAlreadyRead)
|
---|
2595 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage, 0,
|
---|
2596 | &Header, sizeof(Header));
|
---|
2597 | else
|
---|
2598 | {
|
---|
2599 | Header.magicNumber = RT_H2LE_U32(VMDK_SPARSE_MAGICNUMBER);
|
---|
2600 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
2601 | RT_OFFSETOF(SparseExtentHeader, version),
|
---|
2602 | &Header.version,
|
---|
2603 | sizeof(Header)
|
---|
2604 | - RT_OFFSETOF(SparseExtentHeader, version));
|
---|
2605 | }
|
---|
2606 |
|
---|
2607 | if (RT_SUCCESS(rc))
|
---|
2608 | {
|
---|
2609 | rc = vmdkValidateHeader(pImage, pExtent, &Header);
|
---|
2610 | if (RT_SUCCESS(rc))
|
---|
2611 | {
|
---|
2612 | uint64_t cbFile = 0;
|
---|
2613 |
|
---|
2614 | if ( (RT_LE2H_U32(Header.flags) & RT_BIT(17))
|
---|
2615 | && RT_LE2H_U64(Header.gdOffset) == VMDK_GD_AT_END)
|
---|
2616 | pExtent->fFooter = true;
|
---|
2617 |
|
---|
2618 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2619 | || ( pExtent->fFooter
|
---|
2620 | && !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)))
|
---|
2621 | {
|
---|
2622 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pExtent->pFile->pStorage, &cbFile);
|
---|
2623 | if (RT_FAILURE(rc))
|
---|
2624 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot get size of '%s'"), pExtent->pszFullname);
|
---|
2625 | }
|
---|
2626 |
|
---|
2627 | if (RT_SUCCESS(rc))
|
---|
2628 | {
|
---|
2629 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2630 | pExtent->uAppendPosition = RT_ALIGN_64(cbFile, 512);
|
---|
2631 |
|
---|
2632 | if ( pExtent->fFooter
|
---|
2633 | && ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2634 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)))
|
---|
2635 | {
|
---|
2636 | /* Read the footer, which comes before the end-of-stream marker. */
|
---|
2637 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
2638 | cbFile - 2*512, &Header,
|
---|
2639 | sizeof(Header));
|
---|
2640 | if (RT_FAILURE(rc))
|
---|
2641 | {
|
---|
2642 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error reading extent footer in '%s'"), pExtent->pszFullname);
|
---|
2643 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
2644 | }
|
---|
2645 |
|
---|
2646 | if (RT_SUCCESS(rc))
|
---|
2647 | rc = vmdkValidateHeader(pImage, pExtent, &Header);
|
---|
2648 | /* Prohibit any writes to this extent. */
|
---|
2649 | pExtent->uAppendPosition = 0;
|
---|
2650 | }
|
---|
2651 |
|
---|
2652 | if (RT_SUCCESS(rc))
|
---|
2653 | {
|
---|
2654 | pExtent->uVersion = RT_LE2H_U32(Header.version);
|
---|
2655 | pExtent->enmType = VMDKETYPE_HOSTED_SPARSE; /* Just dummy value, changed later. */
|
---|
2656 | pExtent->cSectors = RT_LE2H_U64(Header.capacity);
|
---|
2657 | pExtent->cSectorsPerGrain = RT_LE2H_U64(Header.grainSize);
|
---|
2658 | pExtent->uDescriptorSector = RT_LE2H_U64(Header.descriptorOffset);
|
---|
2659 | pExtent->cDescriptorSectors = RT_LE2H_U64(Header.descriptorSize);
|
---|
2660 | pExtent->cGTEntries = RT_LE2H_U32(Header.numGTEsPerGT);
|
---|
2661 | pExtent->cOverheadSectors = RT_LE2H_U64(Header.overHead);
|
---|
2662 | pExtent->fUncleanShutdown = !!Header.uncleanShutdown;
|
---|
2663 | pExtent->uCompression = RT_LE2H_U16(Header.compressAlgorithm);
|
---|
2664 | if (RT_LE2H_U32(Header.flags) & RT_BIT(1))
|
---|
2665 | {
|
---|
2666 | pExtent->uSectorRGD = RT_LE2H_U64(Header.rgdOffset);
|
---|
2667 | pExtent->uSectorGD = RT_LE2H_U64(Header.gdOffset);
|
---|
2668 | }
|
---|
2669 | else
|
---|
2670 | {
|
---|
2671 | pExtent->uSectorGD = RT_LE2H_U64(Header.gdOffset);
|
---|
2672 | pExtent->uSectorRGD = 0;
|
---|
2673 | }
|
---|
2674 |
|
---|
2675 | if (pExtent->uDescriptorSector && !pExtent->cDescriptorSectors)
|
---|
2676 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2677 | N_("VMDK: inconsistent embedded descriptor config in '%s'"), pExtent->pszFullname);
|
---|
2678 |
|
---|
2679 | if ( RT_SUCCESS(rc)
|
---|
2680 | && ( pExtent->uSectorGD == VMDK_GD_AT_END
|
---|
2681 | || pExtent->uSectorRGD == VMDK_GD_AT_END)
|
---|
2682 | && ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2683 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)))
|
---|
2684 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2685 | N_("VMDK: cannot resolve grain directory offset in '%s'"), pExtent->pszFullname);
|
---|
2686 |
|
---|
2687 | if (RT_SUCCESS(rc))
|
---|
2688 | {
|
---|
2689 | uint64_t cSectorsPerGDE = pExtent->cGTEntries * pExtent->cSectorsPerGrain;
|
---|
2690 | if (!cSectorsPerGDE || cSectorsPerGDE > UINT32_MAX)
|
---|
2691 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2692 | N_("VMDK: incorrect grain directory size in '%s'"), pExtent->pszFullname);
|
---|
2693 | else
|
---|
2694 | {
|
---|
2695 | pExtent->cSectorsPerGDE = cSectorsPerGDE;
|
---|
2696 | pExtent->cGDEntries = (pExtent->cSectors + cSectorsPerGDE - 1) / cSectorsPerGDE;
|
---|
2697 |
|
---|
2698 | /* Fix up the number of descriptor sectors, as some flat images have
|
---|
2699 | * really just one, and this causes failures when inserting the UUID
|
---|
2700 | * values and other extra information. */
|
---|
2701 | if (pExtent->cDescriptorSectors != 0 && pExtent->cDescriptorSectors < 4)
|
---|
2702 | {
|
---|
2703 | /* Do it the easy way - just fix it for flat images which have no
|
---|
2704 | * other complicated metadata which needs space too. */
|
---|
2705 | if ( pExtent->uDescriptorSector + 4 < pExtent->cOverheadSectors
|
---|
2706 | && pExtent->cGTEntries * pExtent->cGDEntries == 0)
|
---|
2707 | pExtent->cDescriptorSectors = 4;
|
---|
2708 | }
|
---|
2709 | }
|
---|
2710 | }
|
---|
2711 | }
|
---|
2712 | }
|
---|
2713 | }
|
---|
2714 | }
|
---|
2715 | else
|
---|
2716 | {
|
---|
2717 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error reading extent header in '%s'"), pExtent->pszFullname);
|
---|
2718 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
2719 | }
|
---|
2720 |
|
---|
2721 | if (RT_FAILURE(rc))
|
---|
2722 | vmdkFreeExtentData(pImage, pExtent, false);
|
---|
2723 |
|
---|
2724 | return rc;
|
---|
2725 | }
|
---|
2726 |
|
---|
2727 | /**
|
---|
2728 | * Internal: read additional metadata belonging to an extent. For those
|
---|
2729 | * extents which have no additional metadata just verify the information.
|
---|
2730 | */
|
---|
2731 | static int vmdkReadMetaExtent(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
2732 | {
|
---|
2733 | int rc = VINF_SUCCESS;
|
---|
2734 |
|
---|
2735 | /* disabled the check as there are too many truncated vmdk images out there */
|
---|
2736 | #ifdef VBOX_WITH_VMDK_STRICT_SIZE_CHECK
|
---|
2737 | uint64_t cbExtentSize;
|
---|
2738 | /* The image must be a multiple of a sector in size and contain the data
|
---|
2739 | * area (flat images only). If not, it means the image is at least
|
---|
2740 | * truncated, or even seriously garbled. */
|
---|
2741 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pExtent->pFile->pStorage, &cbExtentSize);
|
---|
2742 | if (RT_FAILURE(rc))
|
---|
2743 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting size in '%s'"), pExtent->pszFullname);
|
---|
2744 | else if ( cbExtentSize != RT_ALIGN_64(cbExtentSize, 512)
|
---|
2745 | && (pExtent->enmType != VMDKETYPE_FLAT || pExtent->cNominalSectors + pExtent->uSectorOffset > VMDK_BYTE2SECTOR(cbExtentSize)))
|
---|
2746 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2747 | N_("VMDK: file size is not a multiple of 512 in '%s', file is truncated or otherwise garbled"), pExtent->pszFullname);
|
---|
2748 | #endif /* VBOX_WITH_VMDK_STRICT_SIZE_CHECK */
|
---|
2749 | if ( RT_SUCCESS(rc)
|
---|
2750 | && pExtent->enmType == VMDKETYPE_HOSTED_SPARSE)
|
---|
2751 | {
|
---|
2752 | /* The spec says that this must be a power of two and greater than 8,
|
---|
2753 | * but probably they meant not less than 8. */
|
---|
2754 | if ( (pExtent->cSectorsPerGrain & (pExtent->cSectorsPerGrain - 1))
|
---|
2755 | || pExtent->cSectorsPerGrain < 8)
|
---|
2756 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2757 | N_("VMDK: invalid extent grain size %u in '%s'"), pExtent->cSectorsPerGrain, pExtent->pszFullname);
|
---|
2758 | else
|
---|
2759 | {
|
---|
2760 | /* This code requires that a grain table must hold a power of two multiple
|
---|
2761 | * of the number of entries per GT cache entry. */
|
---|
2762 | if ( (pExtent->cGTEntries & (pExtent->cGTEntries - 1))
|
---|
2763 | || pExtent->cGTEntries < VMDK_GT_CACHELINE_SIZE)
|
---|
2764 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2765 | N_("VMDK: grain table cache size problem in '%s'"), pExtent->pszFullname);
|
---|
2766 | else
|
---|
2767 | {
|
---|
2768 | rc = vmdkAllocStreamBuffers(pImage, pExtent);
|
---|
2769 | if (RT_SUCCESS(rc))
|
---|
2770 | {
|
---|
2771 | /* Prohibit any writes to this streamOptimized extent. */
|
---|
2772 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
2773 | pExtent->uAppendPosition = 0;
|
---|
2774 |
|
---|
2775 | if ( !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
2776 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2777 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
|
---|
2778 | rc = vmdkReadGrainDirectory(pImage, pExtent);
|
---|
2779 | else
|
---|
2780 | {
|
---|
2781 | pExtent->uGrainSectorAbs = pExtent->cOverheadSectors;
|
---|
2782 | pExtent->cbGrainStreamRead = 0;
|
---|
2783 | }
|
---|
2784 | }
|
---|
2785 | }
|
---|
2786 | }
|
---|
2787 | }
|
---|
2788 |
|
---|
2789 | if (RT_FAILURE(rc))
|
---|
2790 | vmdkFreeExtentData(pImage, pExtent, false);
|
---|
2791 |
|
---|
2792 | return rc;
|
---|
2793 | }
|
---|
2794 |
|
---|
2795 | /**
|
---|
2796 | * Internal: write/update the metadata for a sparse extent.
|
---|
2797 | */
|
---|
2798 | static int vmdkWriteMetaSparseExtent(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
2799 | uint64_t uOffset, PVDIOCTX pIoCtx)
|
---|
2800 | {
|
---|
2801 | SparseExtentHeader Header;
|
---|
2802 |
|
---|
2803 | memset(&Header, '\0', sizeof(Header));
|
---|
2804 | Header.magicNumber = RT_H2LE_U32(VMDK_SPARSE_MAGICNUMBER);
|
---|
2805 | Header.version = RT_H2LE_U32(pExtent->uVersion);
|
---|
2806 | Header.flags = RT_H2LE_U32(RT_BIT(0));
|
---|
2807 | if (pExtent->pRGD)
|
---|
2808 | Header.flags |= RT_H2LE_U32(RT_BIT(1));
|
---|
2809 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
2810 | Header.flags |= RT_H2LE_U32(RT_BIT(16) | RT_BIT(17));
|
---|
2811 | Header.capacity = RT_H2LE_U64(pExtent->cSectors);
|
---|
2812 | Header.grainSize = RT_H2LE_U64(pExtent->cSectorsPerGrain);
|
---|
2813 | Header.descriptorOffset = RT_H2LE_U64(pExtent->uDescriptorSector);
|
---|
2814 | Header.descriptorSize = RT_H2LE_U64(pExtent->cDescriptorSectors);
|
---|
2815 | Header.numGTEsPerGT = RT_H2LE_U32(pExtent->cGTEntries);
|
---|
2816 | if (pExtent->fFooter && uOffset == 0)
|
---|
2817 | {
|
---|
2818 | if (pExtent->pRGD)
|
---|
2819 | {
|
---|
2820 | Assert(pExtent->uSectorRGD);
|
---|
2821 | Header.rgdOffset = RT_H2LE_U64(VMDK_GD_AT_END);
|
---|
2822 | Header.gdOffset = RT_H2LE_U64(VMDK_GD_AT_END);
|
---|
2823 | }
|
---|
2824 | else
|
---|
2825 | Header.gdOffset = RT_H2LE_U64(VMDK_GD_AT_END);
|
---|
2826 | }
|
---|
2827 | else
|
---|
2828 | {
|
---|
2829 | if (pExtent->pRGD)
|
---|
2830 | {
|
---|
2831 | Assert(pExtent->uSectorRGD);
|
---|
2832 | Header.rgdOffset = RT_H2LE_U64(pExtent->uSectorRGD);
|
---|
2833 | Header.gdOffset = RT_H2LE_U64(pExtent->uSectorGD);
|
---|
2834 | }
|
---|
2835 | else
|
---|
2836 | Header.gdOffset = RT_H2LE_U64(pExtent->uSectorGD);
|
---|
2837 | }
|
---|
2838 | Header.overHead = RT_H2LE_U64(pExtent->cOverheadSectors);
|
---|
2839 | Header.uncleanShutdown = pExtent->fUncleanShutdown;
|
---|
2840 | Header.singleEndLineChar = '\n';
|
---|
2841 | Header.nonEndLineChar = ' ';
|
---|
2842 | Header.doubleEndLineChar1 = '\r';
|
---|
2843 | Header.doubleEndLineChar2 = '\n';
|
---|
2844 | Header.compressAlgorithm = RT_H2LE_U16(pExtent->uCompression);
|
---|
2845 |
|
---|
2846 | int rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
2847 | uOffset, &Header, sizeof(Header),
|
---|
2848 | pIoCtx, NULL, NULL);
|
---|
2849 | if (RT_FAILURE(rc) && (rc != VERR_VD_ASYNC_IO_IN_PROGRESS))
|
---|
2850 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error writing extent header in '%s'"), pExtent->pszFullname);
|
---|
2851 | return rc;
|
---|
2852 | }
|
---|
2853 |
|
---|
2854 | /**
|
---|
2855 | * Internal: free the buffers used for streamOptimized images.
|
---|
2856 | */
|
---|
2857 | static void vmdkFreeStreamBuffers(PVMDKEXTENT pExtent)
|
---|
2858 | {
|
---|
2859 | if (pExtent->pvCompGrain)
|
---|
2860 | {
|
---|
2861 | RTMemFree(pExtent->pvCompGrain);
|
---|
2862 | pExtent->pvCompGrain = NULL;
|
---|
2863 | }
|
---|
2864 | if (pExtent->pvGrain)
|
---|
2865 | {
|
---|
2866 | RTMemFree(pExtent->pvGrain);
|
---|
2867 | pExtent->pvGrain = NULL;
|
---|
2868 | }
|
---|
2869 | }
|
---|
2870 |
|
---|
2871 | /**
|
---|
2872 | * Internal: free the memory used by the extent data structure, optionally
|
---|
2873 | * deleting the referenced files.
|
---|
2874 | *
|
---|
2875 | * @returns VBox status code.
|
---|
2876 | * @param pImage Pointer to the image instance data.
|
---|
2877 | * @param pExtent The extent to free.
|
---|
2878 | * @param fDelete Flag whether to delete the backing storage.
|
---|
2879 | */
|
---|
2880 | static int vmdkFreeExtentData(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
2881 | bool fDelete)
|
---|
2882 | {
|
---|
2883 | int rc = VINF_SUCCESS;
|
---|
2884 |
|
---|
2885 | vmdkFreeGrainDirectory(pExtent);
|
---|
2886 | if (pExtent->pDescData)
|
---|
2887 | {
|
---|
2888 | RTMemFree(pExtent->pDescData);
|
---|
2889 | pExtent->pDescData = NULL;
|
---|
2890 | }
|
---|
2891 | if (pExtent->pFile != NULL)
|
---|
2892 | {
|
---|
2893 | /* Do not delete raw extents, these have full and base names equal. */
|
---|
2894 | rc = vmdkFileClose(pImage, &pExtent->pFile,
|
---|
2895 | fDelete
|
---|
2896 | && pExtent->pszFullname
|
---|
2897 | && pExtent->pszBasename
|
---|
2898 | && strcmp(pExtent->pszFullname, pExtent->pszBasename));
|
---|
2899 | }
|
---|
2900 | if (pExtent->pszBasename)
|
---|
2901 | {
|
---|
2902 | RTMemTmpFree((void *)pExtent->pszBasename);
|
---|
2903 | pExtent->pszBasename = NULL;
|
---|
2904 | }
|
---|
2905 | if (pExtent->pszFullname)
|
---|
2906 | {
|
---|
2907 | RTStrFree((char *)(void *)pExtent->pszFullname);
|
---|
2908 | pExtent->pszFullname = NULL;
|
---|
2909 | }
|
---|
2910 | vmdkFreeStreamBuffers(pExtent);
|
---|
2911 |
|
---|
2912 | return rc;
|
---|
2913 | }
|
---|
2914 |
|
---|
2915 | /**
|
---|
2916 | * Internal: allocate grain table cache if necessary for this image.
|
---|
2917 | */
|
---|
2918 | static int vmdkAllocateGrainTableCache(PVMDKIMAGE pImage)
|
---|
2919 | {
|
---|
2920 | PVMDKEXTENT pExtent;
|
---|
2921 |
|
---|
2922 | /* Allocate grain table cache if any sparse extent is present. */
|
---|
2923 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
2924 | {
|
---|
2925 | pExtent = &pImage->pExtents[i];
|
---|
2926 | if (pExtent->enmType == VMDKETYPE_HOSTED_SPARSE)
|
---|
2927 | {
|
---|
2928 | /* Allocate grain table cache. */
|
---|
2929 | pImage->pGTCache = (PVMDKGTCACHE)RTMemAllocZ(sizeof(VMDKGTCACHE));
|
---|
2930 | if (!pImage->pGTCache)
|
---|
2931 | return VERR_NO_MEMORY;
|
---|
2932 | for (unsigned j = 0; j < VMDK_GT_CACHE_SIZE; j++)
|
---|
2933 | {
|
---|
2934 | PVMDKGTCACHEENTRY pGCE = &pImage->pGTCache->aGTCache[j];
|
---|
2935 | pGCE->uExtent = UINT32_MAX;
|
---|
2936 | }
|
---|
2937 | pImage->pGTCache->cEntries = VMDK_GT_CACHE_SIZE;
|
---|
2938 | break;
|
---|
2939 | }
|
---|
2940 | }
|
---|
2941 |
|
---|
2942 | return VINF_SUCCESS;
|
---|
2943 | }
|
---|
2944 |
|
---|
2945 | /**
|
---|
2946 | * Internal: allocate the given number of extents.
|
---|
2947 | */
|
---|
2948 | static int vmdkCreateExtents(PVMDKIMAGE pImage, unsigned cExtents)
|
---|
2949 | {
|
---|
2950 | int rc = VINF_SUCCESS;
|
---|
2951 | PVMDKEXTENT pExtents = (PVMDKEXTENT)RTMemAllocZ(cExtents * sizeof(VMDKEXTENT));
|
---|
2952 | if (pExtents)
|
---|
2953 | {
|
---|
2954 | for (unsigned i = 0; i < cExtents; i++)
|
---|
2955 | {
|
---|
2956 | pExtents[i].pFile = NULL;
|
---|
2957 | pExtents[i].pszBasename = NULL;
|
---|
2958 | pExtents[i].pszFullname = NULL;
|
---|
2959 | pExtents[i].pGD = NULL;
|
---|
2960 | pExtents[i].pRGD = NULL;
|
---|
2961 | pExtents[i].pDescData = NULL;
|
---|
2962 | pExtents[i].uVersion = 1;
|
---|
2963 | pExtents[i].uCompression = VMDK_COMPRESSION_NONE;
|
---|
2964 | pExtents[i].uExtent = i;
|
---|
2965 | pExtents[i].pImage = pImage;
|
---|
2966 | }
|
---|
2967 | pImage->pExtents = pExtents;
|
---|
2968 | pImage->cExtents = cExtents;
|
---|
2969 | }
|
---|
2970 | else
|
---|
2971 | rc = VERR_NO_MEMORY;
|
---|
2972 |
|
---|
2973 | return rc;
|
---|
2974 | }
|
---|
2975 |
|
---|
2976 | /**
|
---|
2977 | * Reads and processes the descriptor embedded in sparse images.
|
---|
2978 | *
|
---|
2979 | * @returns VBox status code.
|
---|
2980 | * @param pImage VMDK image instance.
|
---|
2981 | * @param pFile The sparse file handle.
|
---|
2982 | */
|
---|
2983 | static int vmdkDescriptorReadSparse(PVMDKIMAGE pImage, PVMDKFILE pFile)
|
---|
2984 | {
|
---|
2985 | /* It's a hosted single-extent image. */
|
---|
2986 | int rc = vmdkCreateExtents(pImage, 1);
|
---|
2987 | if (RT_SUCCESS(rc))
|
---|
2988 | {
|
---|
2989 | /* The opened file is passed to the extent. No separate descriptor
|
---|
2990 | * file, so no need to keep anything open for the image. */
|
---|
2991 | PVMDKEXTENT pExtent = &pImage->pExtents[0];
|
---|
2992 | pExtent->pFile = pFile;
|
---|
2993 | pImage->pFile = NULL;
|
---|
2994 | pExtent->pszFullname = RTPathAbsDup(pImage->pszFilename);
|
---|
2995 | if (RT_LIKELY(pExtent->pszFullname))
|
---|
2996 | {
|
---|
2997 | /* As we're dealing with a monolithic image here, there must
|
---|
2998 | * be a descriptor embedded in the image file. */
|
---|
2999 | rc = vmdkReadBinaryMetaExtent(pImage, pExtent, true /* fMagicAlreadyRead */);
|
---|
3000 | if ( RT_SUCCESS(rc)
|
---|
3001 | && pExtent->uDescriptorSector
|
---|
3002 | && pExtent->cDescriptorSectors)
|
---|
3003 | {
|
---|
3004 | /* HACK: extend the descriptor if it is unusually small and it fits in
|
---|
3005 | * the unused space after the image header. Allows opening VMDK files
|
---|
3006 | * with extremely small descriptor in read/write mode.
|
---|
3007 | *
|
---|
3008 | * The previous version introduced a possible regression for VMDK stream
|
---|
3009 | * optimized images from VMware which tend to have only a single sector sized
|
---|
3010 | * descriptor. Increasing the descriptor size resulted in adding the various uuid
|
---|
3011 | * entries required to make it work with VBox but for stream optimized images
|
---|
3012 | * the updated binary header wasn't written to the disk creating a mismatch
|
---|
3013 | * between advertised and real descriptor size.
|
---|
3014 | *
|
---|
3015 | * The descriptor size will be increased even if opened readonly now if there
|
---|
3016 | * enough room but the new value will not be written back to the image.
|
---|
3017 | */
|
---|
3018 | if ( pExtent->cDescriptorSectors < 3
|
---|
3019 | && (int64_t)pExtent->uSectorGD - pExtent->uDescriptorSector >= 4
|
---|
3020 | && (!pExtent->uSectorRGD || (int64_t)pExtent->uSectorRGD - pExtent->uDescriptorSector >= 4))
|
---|
3021 | {
|
---|
3022 | uint64_t cDescriptorSectorsOld = pExtent->cDescriptorSectors;
|
---|
3023 |
|
---|
3024 | pExtent->cDescriptorSectors = 4;
|
---|
3025 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
3026 | {
|
---|
3027 | /*
|
---|
3028 | * Update the on disk number now to make sure we don't introduce inconsistencies
|
---|
3029 | * in case of stream optimized images from VMware where the descriptor is just
|
---|
3030 | * one sector big (the binary header is not written to disk for complete
|
---|
3031 | * stream optimized images in vmdkFlushImage()).
|
---|
3032 | */
|
---|
3033 | uint64_t u64DescSizeNew = RT_H2LE_U64(pExtent->cDescriptorSectors);
|
---|
3034 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pFile->pStorage, RT_OFFSETOF(SparseExtentHeader, descriptorSize),
|
---|
3035 | &u64DescSizeNew, sizeof(u64DescSizeNew));
|
---|
3036 | if (RT_FAILURE(rc))
|
---|
3037 | {
|
---|
3038 | LogFlowFunc(("Increasing the descriptor size failed with %Rrc\n", rc));
|
---|
3039 | /* Restore the old size and carry on. */
|
---|
3040 | pExtent->cDescriptorSectors = cDescriptorSectorsOld;
|
---|
3041 | }
|
---|
3042 | }
|
---|
3043 | }
|
---|
3044 | /* Read the descriptor from the extent. */
|
---|
3045 | pExtent->pDescData = (char *)RTMemAllocZ(VMDK_SECTOR2BYTE(pExtent->cDescriptorSectors));
|
---|
3046 | if (RT_LIKELY(pExtent->pDescData))
|
---|
3047 | {
|
---|
3048 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
3049 | VMDK_SECTOR2BYTE(pExtent->uDescriptorSector),
|
---|
3050 | pExtent->pDescData,
|
---|
3051 | VMDK_SECTOR2BYTE(pExtent->cDescriptorSectors));
|
---|
3052 | if (RT_SUCCESS(rc))
|
---|
3053 | {
|
---|
3054 | rc = vmdkParseDescriptor(pImage, pExtent->pDescData,
|
---|
3055 | VMDK_SECTOR2BYTE(pExtent->cDescriptorSectors));
|
---|
3056 | if ( RT_SUCCESS(rc)
|
---|
3057 | && ( !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3058 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_ASYNC_IO)))
|
---|
3059 | {
|
---|
3060 | rc = vmdkReadMetaExtent(pImage, pExtent);
|
---|
3061 | if (RT_SUCCESS(rc))
|
---|
3062 | {
|
---|
3063 | /* Mark the extent as unclean if opened in read-write mode. */
|
---|
3064 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
3065 | && !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED))
|
---|
3066 | {
|
---|
3067 | pExtent->fUncleanShutdown = true;
|
---|
3068 | pExtent->fMetaDirty = true;
|
---|
3069 | }
|
---|
3070 | }
|
---|
3071 | }
|
---|
3072 | else if (RT_SUCCESS(rc))
|
---|
3073 | rc = VERR_NOT_SUPPORTED;
|
---|
3074 | }
|
---|
3075 | else
|
---|
3076 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: read error for descriptor in '%s'"), pExtent->pszFullname);
|
---|
3077 | }
|
---|
3078 | else
|
---|
3079 | rc = VERR_NO_MEMORY;
|
---|
3080 | }
|
---|
3081 | else if (RT_SUCCESS(rc))
|
---|
3082 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: monolithic image without descriptor in '%s'"), pImage->pszFilename);
|
---|
3083 | }
|
---|
3084 | else
|
---|
3085 | rc = VERR_NO_MEMORY;
|
---|
3086 | }
|
---|
3087 |
|
---|
3088 | return rc;
|
---|
3089 | }
|
---|
3090 |
|
---|
3091 | /**
|
---|
3092 | * Reads the descriptor from a pure text file.
|
---|
3093 | *
|
---|
3094 | * @returns VBox status code.
|
---|
3095 | * @param pImage VMDK image instance.
|
---|
3096 | * @param pFile The descriptor file handle.
|
---|
3097 | */
|
---|
3098 | static int vmdkDescriptorReadAscii(PVMDKIMAGE pImage, PVMDKFILE pFile)
|
---|
3099 | {
|
---|
3100 | /* Allocate at least 10K, and make sure that there is 5K free space
|
---|
3101 | * in case new entries need to be added to the descriptor. Never
|
---|
3102 | * allocate more than 128K, because that's no valid descriptor file
|
---|
3103 | * and will result in the correct "truncated read" error handling. */
|
---|
3104 | uint64_t cbFileSize;
|
---|
3105 | int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pFile->pStorage, &cbFileSize);
|
---|
3106 | if ( RT_SUCCESS(rc)
|
---|
3107 | && cbFileSize >= 50)
|
---|
3108 | {
|
---|
3109 | uint64_t cbSize = cbFileSize;
|
---|
3110 | if (cbSize % VMDK_SECTOR2BYTE(10))
|
---|
3111 | cbSize += VMDK_SECTOR2BYTE(20) - cbSize % VMDK_SECTOR2BYTE(10);
|
---|
3112 | else
|
---|
3113 | cbSize += VMDK_SECTOR2BYTE(10);
|
---|
3114 | cbSize = RT_MIN(cbSize, _128K);
|
---|
3115 | pImage->cbDescAlloc = RT_MAX(VMDK_SECTOR2BYTE(20), cbSize);
|
---|
3116 | pImage->pDescData = (char *)RTMemAllocZ(pImage->cbDescAlloc);
|
---|
3117 | if (RT_LIKELY(pImage->pDescData))
|
---|
3118 | {
|
---|
3119 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pFile->pStorage, 0, pImage->pDescData,
|
---|
3120 | RT_MIN(pImage->cbDescAlloc, cbFileSize));
|
---|
3121 | if (RT_SUCCESS(rc))
|
---|
3122 | {
|
---|
3123 | #if 0 /** @todo Revisit */
|
---|
3124 | cbRead += sizeof(u32Magic);
|
---|
3125 | if (cbRead == pImage->cbDescAlloc)
|
---|
3126 | {
|
---|
3127 | /* Likely the read is truncated. Better fail a bit too early
|
---|
3128 | * (normally the descriptor is much smaller than our buffer). */
|
---|
3129 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: cannot read descriptor in '%s'"), pImage->pszFilename);
|
---|
3130 | goto out;
|
---|
3131 | }
|
---|
3132 | #endif
|
---|
3133 | rc = vmdkParseDescriptor(pImage, pImage->pDescData,
|
---|
3134 | pImage->cbDescAlloc);
|
---|
3135 | if (RT_SUCCESS(rc))
|
---|
3136 | {
|
---|
3137 | for (unsigned i = 0; i < pImage->cExtents && RT_SUCCESS(rc); i++)
|
---|
3138 | {
|
---|
3139 | PVMDKEXTENT pExtent = &pImage->pExtents[i];
|
---|
3140 | if (pExtent->pszBasename)
|
---|
3141 | {
|
---|
3142 | /* Hack to figure out whether the specified name in the
|
---|
3143 | * extent descriptor is absolute. Doesn't always work, but
|
---|
3144 | * should be good enough for now. */
|
---|
3145 | char *pszFullname;
|
---|
3146 | /** @todo implement proper path absolute check. */
|
---|
3147 | if (pExtent->pszBasename[0] == RTPATH_SLASH)
|
---|
3148 | {
|
---|
3149 | pszFullname = RTStrDup(pExtent->pszBasename);
|
---|
3150 | if (!pszFullname)
|
---|
3151 | {
|
---|
3152 | rc = VERR_NO_MEMORY;
|
---|
3153 | break;
|
---|
3154 | }
|
---|
3155 | }
|
---|
3156 | else
|
---|
3157 | {
|
---|
3158 | char *pszDirname = RTStrDup(pImage->pszFilename);
|
---|
3159 | if (!pszDirname)
|
---|
3160 | {
|
---|
3161 | rc = VERR_NO_MEMORY;
|
---|
3162 | break;
|
---|
3163 | }
|
---|
3164 | RTPathStripFilename(pszDirname);
|
---|
3165 | pszFullname = RTPathJoinA(pszDirname, pExtent->pszBasename);
|
---|
3166 | RTStrFree(pszDirname);
|
---|
3167 | if (!pszFullname)
|
---|
3168 | {
|
---|
3169 | rc = VERR_NO_STR_MEMORY;
|
---|
3170 | break;
|
---|
3171 | }
|
---|
3172 | }
|
---|
3173 | pExtent->pszFullname = pszFullname;
|
---|
3174 | }
|
---|
3175 | else
|
---|
3176 | pExtent->pszFullname = NULL;
|
---|
3177 |
|
---|
3178 | unsigned uOpenFlags = pImage->uOpenFlags | ((pExtent->enmAccess == VMDKACCESS_READONLY) ? VD_OPEN_FLAGS_READONLY : 0);
|
---|
3179 | switch (pExtent->enmType)
|
---|
3180 | {
|
---|
3181 | case VMDKETYPE_HOSTED_SPARSE:
|
---|
3182 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3183 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */));
|
---|
3184 | if (RT_FAILURE(rc))
|
---|
3185 | {
|
---|
3186 | /* Do NOT signal an appropriate error here, as the VD
|
---|
3187 | * layer has the choice of retrying the open if it
|
---|
3188 | * failed. */
|
---|
3189 | break;
|
---|
3190 | }
|
---|
3191 | rc = vmdkReadBinaryMetaExtent(pImage, pExtent,
|
---|
3192 | false /* fMagicAlreadyRead */);
|
---|
3193 | if (RT_FAILURE(rc))
|
---|
3194 | break;
|
---|
3195 | rc = vmdkReadMetaExtent(pImage, pExtent);
|
---|
3196 | if (RT_FAILURE(rc))
|
---|
3197 | break;
|
---|
3198 |
|
---|
3199 | /* Mark extent as unclean if opened in read-write mode. */
|
---|
3200 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
3201 | {
|
---|
3202 | pExtent->fUncleanShutdown = true;
|
---|
3203 | pExtent->fMetaDirty = true;
|
---|
3204 | }
|
---|
3205 | break;
|
---|
3206 | case VMDKETYPE_VMFS:
|
---|
3207 | case VMDKETYPE_FLAT:
|
---|
3208 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3209 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */));
|
---|
3210 | if (RT_FAILURE(rc))
|
---|
3211 | {
|
---|
3212 | /* Do NOT signal an appropriate error here, as the VD
|
---|
3213 | * layer has the choice of retrying the open if it
|
---|
3214 | * failed. */
|
---|
3215 | break;
|
---|
3216 | }
|
---|
3217 | break;
|
---|
3218 | case VMDKETYPE_ZERO:
|
---|
3219 | /* Nothing to do. */
|
---|
3220 | break;
|
---|
3221 | default:
|
---|
3222 | AssertMsgFailed(("unknown vmdk extent type %d\n", pExtent->enmType));
|
---|
3223 | }
|
---|
3224 | }
|
---|
3225 | }
|
---|
3226 | }
|
---|
3227 | else
|
---|
3228 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: read error for descriptor in '%s'"), pImage->pszFilename);
|
---|
3229 | }
|
---|
3230 | else
|
---|
3231 | rc = VERR_NO_MEMORY;
|
---|
3232 | }
|
---|
3233 | else if (RT_SUCCESS(rc))
|
---|
3234 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: descriptor in '%s' is too short"), pImage->pszFilename);
|
---|
3235 |
|
---|
3236 | return rc;
|
---|
3237 | }
|
---|
3238 |
|
---|
3239 | /**
|
---|
3240 | * Read and process the descriptor based on the image type.
|
---|
3241 | *
|
---|
3242 | * @returns VBox status code.
|
---|
3243 | * @param pImage VMDK image instance.
|
---|
3244 | * @param pFile VMDK file handle.
|
---|
3245 | */
|
---|
3246 | static int vmdkDescriptorRead(PVMDKIMAGE pImage, PVMDKFILE pFile)
|
---|
3247 | {
|
---|
3248 | uint32_t u32Magic;
|
---|
3249 |
|
---|
3250 | /* Read magic (if present). */
|
---|
3251 | int rc = vdIfIoIntFileReadSync(pImage->pIfIo, pFile->pStorage, 0,
|
---|
3252 | &u32Magic, sizeof(u32Magic));
|
---|
3253 | if (RT_SUCCESS(rc))
|
---|
3254 | {
|
---|
3255 | /* Handle the file according to its magic number. */
|
---|
3256 | if (RT_LE2H_U32(u32Magic) == VMDK_SPARSE_MAGICNUMBER)
|
---|
3257 | rc = vmdkDescriptorReadSparse(pImage, pFile);
|
---|
3258 | else
|
---|
3259 | rc = vmdkDescriptorReadAscii(pImage, pFile);
|
---|
3260 | }
|
---|
3261 | else
|
---|
3262 | {
|
---|
3263 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error reading the magic number in '%s'"), pImage->pszFilename);
|
---|
3264 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
3265 | }
|
---|
3266 |
|
---|
3267 | return rc;
|
---|
3268 | }
|
---|
3269 |
|
---|
3270 | /**
|
---|
3271 | * Internal: Open an image, constructing all necessary data structures.
|
---|
3272 | */
|
---|
3273 | static int vmdkOpenImage(PVMDKIMAGE pImage, unsigned uOpenFlags)
|
---|
3274 | {
|
---|
3275 | pImage->uOpenFlags = uOpenFlags;
|
---|
3276 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
3277 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
3278 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
3279 |
|
---|
3280 | /*
|
---|
3281 | * Open the image.
|
---|
3282 | * We don't have to check for asynchronous access because
|
---|
3283 | * we only support raw access and the opened file is a description
|
---|
3284 | * file were no data is stored.
|
---|
3285 | */
|
---|
3286 | PVMDKFILE pFile;
|
---|
3287 | int rc = vmdkFileOpen(pImage, &pFile, pImage->pszFilename,
|
---|
3288 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */));
|
---|
3289 | if (RT_SUCCESS(rc))
|
---|
3290 | {
|
---|
3291 | pImage->pFile = pFile;
|
---|
3292 |
|
---|
3293 | rc = vmdkDescriptorRead(pImage, pFile);
|
---|
3294 | if (RT_SUCCESS(rc))
|
---|
3295 | {
|
---|
3296 | /* Determine PCHS geometry if not set. */
|
---|
3297 | if (pImage->PCHSGeometry.cCylinders == 0)
|
---|
3298 | {
|
---|
3299 | uint64_t cCylinders = VMDK_BYTE2SECTOR(pImage->cbSize)
|
---|
3300 | / pImage->PCHSGeometry.cHeads
|
---|
3301 | / pImage->PCHSGeometry.cSectors;
|
---|
3302 | pImage->PCHSGeometry.cCylinders = (unsigned)RT_MIN(cCylinders, 16383);
|
---|
3303 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
3304 | && !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED))
|
---|
3305 | {
|
---|
3306 | rc = vmdkDescSetPCHSGeometry(pImage, &pImage->PCHSGeometry);
|
---|
3307 | AssertRC(rc);
|
---|
3308 | }
|
---|
3309 | }
|
---|
3310 |
|
---|
3311 | /* Update the image metadata now in case has changed. */
|
---|
3312 | rc = vmdkFlushImage(pImage, NULL);
|
---|
3313 | if (RT_SUCCESS(rc))
|
---|
3314 | {
|
---|
3315 | /* Figure out a few per-image constants from the extents. */
|
---|
3316 | pImage->cbSize = 0;
|
---|
3317 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
3318 | {
|
---|
3319 | PVMDKEXTENT pExtent = &pImage->pExtents[i];
|
---|
3320 | if (pExtent->enmType == VMDKETYPE_HOSTED_SPARSE)
|
---|
3321 | {
|
---|
3322 | /* Here used to be a check whether the nominal size of an extent
|
---|
3323 | * is a multiple of the grain size. The spec says that this is
|
---|
3324 | * always the case, but unfortunately some files out there in the
|
---|
3325 | * wild violate the spec (e.g. ReactOS 0.3.1). */
|
---|
3326 | }
|
---|
3327 | else if ( pExtent->enmType == VMDKETYPE_FLAT
|
---|
3328 | || pExtent->enmType == VMDKETYPE_ZERO)
|
---|
3329 | pImage->uImageFlags |= VD_IMAGE_FLAGS_FIXED;
|
---|
3330 |
|
---|
3331 | pImage->cbSize += VMDK_SECTOR2BYTE(pExtent->cNominalSectors);
|
---|
3332 | }
|
---|
3333 |
|
---|
3334 | if ( !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3335 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
3336 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
|
---|
3337 | rc = vmdkAllocateGrainTableCache(pImage);
|
---|
3338 | }
|
---|
3339 | }
|
---|
3340 | }
|
---|
3341 | /* else: Do NOT signal an appropriate error here, as the VD layer has the
|
---|
3342 | * choice of retrying the open if it failed. */
|
---|
3343 |
|
---|
3344 | if (RT_SUCCESS(rc))
|
---|
3345 | {
|
---|
3346 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
3347 | pImage->RegionList.fFlags = 0;
|
---|
3348 | pImage->RegionList.cRegions = 1;
|
---|
3349 |
|
---|
3350 | pRegion->offRegion = 0; /* Disk start. */
|
---|
3351 | pRegion->cbBlock = 512;
|
---|
3352 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
3353 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
3354 | pRegion->cbData = 512;
|
---|
3355 | pRegion->cbMetadata = 0;
|
---|
3356 | pRegion->cRegionBlocksOrBytes = pImage->cbSize;
|
---|
3357 | }
|
---|
3358 | else
|
---|
3359 | vmdkFreeImage(pImage, false);
|
---|
3360 | return rc;
|
---|
3361 | }
|
---|
3362 |
|
---|
3363 | /**
|
---|
3364 | * Internal: create VMDK images for raw disk/partition access.
|
---|
3365 | */
|
---|
3366 | static int vmdkCreateRawImage(PVMDKIMAGE pImage, const PVDISKRAW pRaw,
|
---|
3367 | uint64_t cbSize)
|
---|
3368 | {
|
---|
3369 | int rc = VINF_SUCCESS;
|
---|
3370 | PVMDKEXTENT pExtent;
|
---|
3371 |
|
---|
3372 | if (pRaw->uFlags & VDISKRAW_DISK)
|
---|
3373 | {
|
---|
3374 | /* Full raw disk access. This requires setting up a descriptor
|
---|
3375 | * file and open the (flat) raw disk. */
|
---|
3376 | rc = vmdkCreateExtents(pImage, 1);
|
---|
3377 | if (RT_FAILURE(rc))
|
---|
3378 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new extent list in '%s'"), pImage->pszFilename);
|
---|
3379 | pExtent = &pImage->pExtents[0];
|
---|
3380 | /* Create raw disk descriptor file. */
|
---|
3381 | rc = vmdkFileOpen(pImage, &pImage->pFile, pImage->pszFilename,
|
---|
3382 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags,
|
---|
3383 | true /* fCreate */));
|
---|
3384 | if (RT_FAILURE(rc))
|
---|
3385 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new file '%s'"), pImage->pszFilename);
|
---|
3386 |
|
---|
3387 | /* Set up basename for extent description. Cannot use StrDup. */
|
---|
3388 | size_t cbBasename = strlen(pRaw->pszRawDisk) + 1;
|
---|
3389 | char *pszBasename = (char *)RTMemTmpAlloc(cbBasename);
|
---|
3390 | if (!pszBasename)
|
---|
3391 | return VERR_NO_MEMORY;
|
---|
3392 | memcpy(pszBasename, pRaw->pszRawDisk, cbBasename);
|
---|
3393 | pExtent->pszBasename = pszBasename;
|
---|
3394 | /* For raw disks the full name is identical to the base name. */
|
---|
3395 | pExtent->pszFullname = RTStrDup(pszBasename);
|
---|
3396 | if (!pExtent->pszFullname)
|
---|
3397 | return VERR_NO_MEMORY;
|
---|
3398 | pExtent->enmType = VMDKETYPE_FLAT;
|
---|
3399 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(cbSize);
|
---|
3400 | pExtent->uSectorOffset = 0;
|
---|
3401 | pExtent->enmAccess = (pRaw->uFlags & VDISKRAW_READONLY) ? VMDKACCESS_READONLY : VMDKACCESS_READWRITE;
|
---|
3402 | pExtent->fMetaDirty = false;
|
---|
3403 |
|
---|
3404 | /* Open flat image, the raw disk. */
|
---|
3405 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3406 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags | ((pExtent->enmAccess == VMDKACCESS_READONLY) ? VD_OPEN_FLAGS_READONLY : 0),
|
---|
3407 | false /* fCreate */));
|
---|
3408 | if (RT_FAILURE(rc))
|
---|
3409 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not open raw disk file '%s'"), pExtent->pszFullname);
|
---|
3410 | }
|
---|
3411 | else
|
---|
3412 | {
|
---|
3413 | /* Raw partition access. This requires setting up a descriptor
|
---|
3414 | * file, write the partition information to a flat extent and
|
---|
3415 | * open all the (flat) raw disk partitions. */
|
---|
3416 |
|
---|
3417 | /* First pass over the partition data areas to determine how many
|
---|
3418 | * extents we need. One data area can require up to 2 extents, as
|
---|
3419 | * it might be necessary to skip over unpartitioned space. */
|
---|
3420 | unsigned cExtents = 0;
|
---|
3421 | uint64_t uStart = 0;
|
---|
3422 | for (unsigned i = 0; i < pRaw->cPartDescs; i++)
|
---|
3423 | {
|
---|
3424 | PVDISKRAWPARTDESC pPart = &pRaw->pPartDescs[i];
|
---|
3425 | if (uStart > pPart->uStart)
|
---|
3426 | return vdIfError(pImage->pIfError, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
---|
3427 | N_("VMDK: incorrect partition data area ordering set up by the caller in '%s'"), pImage->pszFilename);
|
---|
3428 |
|
---|
3429 | if (uStart < pPart->uStart)
|
---|
3430 | cExtents++;
|
---|
3431 | uStart = pPart->uStart + pPart->cbData;
|
---|
3432 | cExtents++;
|
---|
3433 | }
|
---|
3434 | /* Another extent for filling up the rest of the image. */
|
---|
3435 | if (uStart != cbSize)
|
---|
3436 | cExtents++;
|
---|
3437 |
|
---|
3438 | rc = vmdkCreateExtents(pImage, cExtents);
|
---|
3439 | if (RT_FAILURE(rc))
|
---|
3440 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new extent list in '%s'"), pImage->pszFilename);
|
---|
3441 |
|
---|
3442 | /* Create raw partition descriptor file. */
|
---|
3443 | rc = vmdkFileOpen(pImage, &pImage->pFile, pImage->pszFilename,
|
---|
3444 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags,
|
---|
3445 | true /* fCreate */));
|
---|
3446 | if (RT_FAILURE(rc))
|
---|
3447 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new file '%s'"), pImage->pszFilename);
|
---|
3448 |
|
---|
3449 | /* Create base filename for the partition table extent. */
|
---|
3450 | /** @todo remove fixed buffer without creating memory leaks. */
|
---|
3451 | char pszPartition[1024];
|
---|
3452 | const char *pszBase = RTPathFilename(pImage->pszFilename);
|
---|
3453 | const char *pszSuff = RTPathSuffix(pszBase);
|
---|
3454 | if (pszSuff == NULL)
|
---|
3455 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: invalid filename '%s'"), pImage->pszFilename);
|
---|
3456 | char *pszBaseBase = RTStrDup(pszBase);
|
---|
3457 | if (!pszBaseBase)
|
---|
3458 | return VERR_NO_MEMORY;
|
---|
3459 | RTPathStripSuffix(pszBaseBase);
|
---|
3460 | RTStrPrintf(pszPartition, sizeof(pszPartition), "%s-pt%s",
|
---|
3461 | pszBaseBase, pszSuff);
|
---|
3462 | RTStrFree(pszBaseBase);
|
---|
3463 |
|
---|
3464 | /* Second pass over the partitions, now define all extents. */
|
---|
3465 | uint64_t uPartOffset = 0;
|
---|
3466 | cExtents = 0;
|
---|
3467 | uStart = 0;
|
---|
3468 | for (unsigned i = 0; i < pRaw->cPartDescs; i++)
|
---|
3469 | {
|
---|
3470 | PVDISKRAWPARTDESC pPart = &pRaw->pPartDescs[i];
|
---|
3471 | pExtent = &pImage->pExtents[cExtents++];
|
---|
3472 |
|
---|
3473 | if (uStart < pPart->uStart)
|
---|
3474 | {
|
---|
3475 | pExtent->pszBasename = NULL;
|
---|
3476 | pExtent->pszFullname = NULL;
|
---|
3477 | pExtent->enmType = VMDKETYPE_ZERO;
|
---|
3478 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(pPart->uStart - uStart);
|
---|
3479 | pExtent->uSectorOffset = 0;
|
---|
3480 | pExtent->enmAccess = VMDKACCESS_READWRITE;
|
---|
3481 | pExtent->fMetaDirty = false;
|
---|
3482 | /* go to next extent */
|
---|
3483 | pExtent = &pImage->pExtents[cExtents++];
|
---|
3484 | }
|
---|
3485 | uStart = pPart->uStart + pPart->cbData;
|
---|
3486 |
|
---|
3487 | if (pPart->pvPartitionData)
|
---|
3488 | {
|
---|
3489 | /* Set up basename for extent description. Can't use StrDup. */
|
---|
3490 | size_t cbBasename = strlen(pszPartition) + 1;
|
---|
3491 | char *pszBasename = (char *)RTMemTmpAlloc(cbBasename);
|
---|
3492 | if (!pszBasename)
|
---|
3493 | return VERR_NO_MEMORY;
|
---|
3494 | memcpy(pszBasename, pszPartition, cbBasename);
|
---|
3495 | pExtent->pszBasename = pszBasename;
|
---|
3496 |
|
---|
3497 | /* Set up full name for partition extent. */
|
---|
3498 | char *pszDirname = RTStrDup(pImage->pszFilename);
|
---|
3499 | if (!pszDirname)
|
---|
3500 | return VERR_NO_STR_MEMORY;
|
---|
3501 | RTPathStripFilename(pszDirname);
|
---|
3502 | char *pszFullname = RTPathJoinA(pszDirname, pExtent->pszBasename);
|
---|
3503 | RTStrFree(pszDirname);
|
---|
3504 | if (!pszFullname)
|
---|
3505 | return VERR_NO_STR_MEMORY;
|
---|
3506 | pExtent->pszFullname = pszFullname;
|
---|
3507 | pExtent->enmType = VMDKETYPE_FLAT;
|
---|
3508 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(pPart->cbData);
|
---|
3509 | pExtent->uSectorOffset = uPartOffset;
|
---|
3510 | pExtent->enmAccess = VMDKACCESS_READWRITE;
|
---|
3511 | pExtent->fMetaDirty = false;
|
---|
3512 |
|
---|
3513 | /* Create partition table flat image. */
|
---|
3514 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3515 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags | ((pExtent->enmAccess == VMDKACCESS_READONLY) ? VD_OPEN_FLAGS_READONLY : 0),
|
---|
3516 | true /* fCreate */));
|
---|
3517 | if (RT_FAILURE(rc))
|
---|
3518 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new partition data file '%s'"), pExtent->pszFullname);
|
---|
3519 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
3520 | VMDK_SECTOR2BYTE(uPartOffset),
|
---|
3521 | pPart->pvPartitionData,
|
---|
3522 | pPart->cbData);
|
---|
3523 | if (RT_FAILURE(rc))
|
---|
3524 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not write partition data to '%s'"), pExtent->pszFullname);
|
---|
3525 | uPartOffset += VMDK_BYTE2SECTOR(pPart->cbData);
|
---|
3526 | }
|
---|
3527 | else
|
---|
3528 | {
|
---|
3529 | if (pPart->pszRawDevice)
|
---|
3530 | {
|
---|
3531 | /* Set up basename for extent descr. Can't use StrDup. */
|
---|
3532 | size_t cbBasename = strlen(pPart->pszRawDevice) + 1;
|
---|
3533 | char *pszBasename = (char *)RTMemTmpAlloc(cbBasename);
|
---|
3534 | if (!pszBasename)
|
---|
3535 | return VERR_NO_MEMORY;
|
---|
3536 | memcpy(pszBasename, pPart->pszRawDevice, cbBasename);
|
---|
3537 | pExtent->pszBasename = pszBasename;
|
---|
3538 | /* For raw disks full name is identical to base name. */
|
---|
3539 | pExtent->pszFullname = RTStrDup(pszBasename);
|
---|
3540 | if (!pExtent->pszFullname)
|
---|
3541 | return VERR_NO_MEMORY;
|
---|
3542 | pExtent->enmType = VMDKETYPE_FLAT;
|
---|
3543 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(pPart->cbData);
|
---|
3544 | pExtent->uSectorOffset = VMDK_BYTE2SECTOR(pPart->uStartOffset);
|
---|
3545 | pExtent->enmAccess = (pPart->uFlags & VDISKRAW_READONLY) ? VMDKACCESS_READONLY : VMDKACCESS_READWRITE;
|
---|
3546 | pExtent->fMetaDirty = false;
|
---|
3547 |
|
---|
3548 | /* Open flat image, the raw partition. */
|
---|
3549 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3550 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags | ((pExtent->enmAccess == VMDKACCESS_READONLY) ? VD_OPEN_FLAGS_READONLY : 0),
|
---|
3551 | false /* fCreate */));
|
---|
3552 | if (RT_FAILURE(rc))
|
---|
3553 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not open raw partition file '%s'"), pExtent->pszFullname);
|
---|
3554 | }
|
---|
3555 | else
|
---|
3556 | {
|
---|
3557 | pExtent->pszBasename = NULL;
|
---|
3558 | pExtent->pszFullname = NULL;
|
---|
3559 | pExtent->enmType = VMDKETYPE_ZERO;
|
---|
3560 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(pPart->cbData);
|
---|
3561 | pExtent->uSectorOffset = 0;
|
---|
3562 | pExtent->enmAccess = VMDKACCESS_READWRITE;
|
---|
3563 | pExtent->fMetaDirty = false;
|
---|
3564 | }
|
---|
3565 | }
|
---|
3566 | }
|
---|
3567 | /* Another extent for filling up the rest of the image. */
|
---|
3568 | if (uStart != cbSize)
|
---|
3569 | {
|
---|
3570 | pExtent = &pImage->pExtents[cExtents++];
|
---|
3571 | pExtent->pszBasename = NULL;
|
---|
3572 | pExtent->pszFullname = NULL;
|
---|
3573 | pExtent->enmType = VMDKETYPE_ZERO;
|
---|
3574 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(cbSize - uStart);
|
---|
3575 | pExtent->uSectorOffset = 0;
|
---|
3576 | pExtent->enmAccess = VMDKACCESS_READWRITE;
|
---|
3577 | pExtent->fMetaDirty = false;
|
---|
3578 | }
|
---|
3579 | }
|
---|
3580 |
|
---|
3581 | rc = vmdkDescBaseSetStr(pImage, &pImage->Descriptor, "createType",
|
---|
3582 | (pRaw->uFlags & VDISKRAW_DISK) ?
|
---|
3583 | "fullDevice" : "partitionedDevice");
|
---|
3584 | if (RT_FAILURE(rc))
|
---|
3585 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not set the image type in '%s'"), pImage->pszFilename);
|
---|
3586 | return rc;
|
---|
3587 | }
|
---|
3588 |
|
---|
3589 | /**
|
---|
3590 | * Internal: create a regular (i.e. file-backed) VMDK image.
|
---|
3591 | */
|
---|
3592 | static int vmdkCreateRegularImage(PVMDKIMAGE pImage, uint64_t cbSize,
|
---|
3593 | unsigned uImageFlags, PVDINTERFACEPROGRESS pIfProgress,
|
---|
3594 | unsigned uPercentStart, unsigned uPercentSpan)
|
---|
3595 | {
|
---|
3596 | int rc = VINF_SUCCESS;
|
---|
3597 | unsigned cExtents = 1;
|
---|
3598 | uint64_t cbOffset = 0;
|
---|
3599 | uint64_t cbRemaining = cbSize;
|
---|
3600 |
|
---|
3601 | if (uImageFlags & VD_VMDK_IMAGE_FLAGS_SPLIT_2G)
|
---|
3602 | {
|
---|
3603 | cExtents = cbSize / VMDK_2G_SPLIT_SIZE;
|
---|
3604 | /* Do proper extent computation: need one smaller extent if the total
|
---|
3605 | * size isn't evenly divisible by the split size. */
|
---|
3606 | if (cbSize % VMDK_2G_SPLIT_SIZE)
|
---|
3607 | cExtents++;
|
---|
3608 | }
|
---|
3609 | rc = vmdkCreateExtents(pImage, cExtents);
|
---|
3610 | if (RT_FAILURE(rc))
|
---|
3611 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new extent list in '%s'"), pImage->pszFilename);
|
---|
3612 |
|
---|
3613 | /* Basename strings needed for constructing the extent names. */
|
---|
3614 | char *pszBasenameSubstr = RTPathFilename(pImage->pszFilename);
|
---|
3615 | AssertPtr(pszBasenameSubstr);
|
---|
3616 | size_t cbBasenameSubstr = strlen(pszBasenameSubstr) + 1;
|
---|
3617 |
|
---|
3618 | /* Create separate descriptor file if necessary. */
|
---|
3619 | if (cExtents != 1 || (uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
3620 | {
|
---|
3621 | rc = vmdkFileOpen(pImage, &pImage->pFile, pImage->pszFilename,
|
---|
3622 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags,
|
---|
3623 | true /* fCreate */));
|
---|
3624 | if (RT_FAILURE(rc))
|
---|
3625 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new sparse descriptor file '%s'"), pImage->pszFilename);
|
---|
3626 | }
|
---|
3627 | else
|
---|
3628 | pImage->pFile = NULL;
|
---|
3629 |
|
---|
3630 | /* Set up all extents. */
|
---|
3631 | for (unsigned i = 0; i < cExtents; i++)
|
---|
3632 | {
|
---|
3633 | PVMDKEXTENT pExtent = &pImage->pExtents[i];
|
---|
3634 | uint64_t cbExtent = cbRemaining;
|
---|
3635 |
|
---|
3636 | /* Set up fullname/basename for extent description. Cannot use StrDup
|
---|
3637 | * for basename, as it is not guaranteed that the memory can be freed
|
---|
3638 | * with RTMemTmpFree, which must be used as in other code paths
|
---|
3639 | * StrDup is not usable. */
|
---|
3640 | if (cExtents == 1 && !(uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
3641 | {
|
---|
3642 | char *pszBasename = (char *)RTMemTmpAlloc(cbBasenameSubstr);
|
---|
3643 | if (!pszBasename)
|
---|
3644 | return VERR_NO_MEMORY;
|
---|
3645 | memcpy(pszBasename, pszBasenameSubstr, cbBasenameSubstr);
|
---|
3646 | pExtent->pszBasename = pszBasename;
|
---|
3647 | }
|
---|
3648 | else
|
---|
3649 | {
|
---|
3650 | char *pszBasenameSuff = RTPathSuffix(pszBasenameSubstr);
|
---|
3651 | char *pszBasenameBase = RTStrDup(pszBasenameSubstr);
|
---|
3652 | RTPathStripSuffix(pszBasenameBase);
|
---|
3653 | char *pszTmp;
|
---|
3654 | size_t cbTmp;
|
---|
3655 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3656 | {
|
---|
3657 | if (cExtents == 1)
|
---|
3658 | RTStrAPrintf(&pszTmp, "%s-flat%s", pszBasenameBase,
|
---|
3659 | pszBasenameSuff);
|
---|
3660 | else
|
---|
3661 | RTStrAPrintf(&pszTmp, "%s-f%03d%s", pszBasenameBase,
|
---|
3662 | i+1, pszBasenameSuff);
|
---|
3663 | }
|
---|
3664 | else
|
---|
3665 | RTStrAPrintf(&pszTmp, "%s-s%03d%s", pszBasenameBase, i+1,
|
---|
3666 | pszBasenameSuff);
|
---|
3667 | RTStrFree(pszBasenameBase);
|
---|
3668 | if (!pszTmp)
|
---|
3669 | return VERR_NO_STR_MEMORY;
|
---|
3670 | cbTmp = strlen(pszTmp) + 1;
|
---|
3671 | char *pszBasename = (char *)RTMemTmpAlloc(cbTmp);
|
---|
3672 | if (!pszBasename)
|
---|
3673 | {
|
---|
3674 | RTStrFree(pszTmp);
|
---|
3675 | return VERR_NO_MEMORY;
|
---|
3676 | }
|
---|
3677 | memcpy(pszBasename, pszTmp, cbTmp);
|
---|
3678 | RTStrFree(pszTmp);
|
---|
3679 | pExtent->pszBasename = pszBasename;
|
---|
3680 | if (uImageFlags & VD_VMDK_IMAGE_FLAGS_SPLIT_2G)
|
---|
3681 | cbExtent = RT_MIN(cbRemaining, VMDK_2G_SPLIT_SIZE);
|
---|
3682 | }
|
---|
3683 | char *pszBasedirectory = RTStrDup(pImage->pszFilename);
|
---|
3684 | if (!pszBasedirectory)
|
---|
3685 | return VERR_NO_STR_MEMORY;
|
---|
3686 | RTPathStripFilename(pszBasedirectory);
|
---|
3687 | char *pszFullname = RTPathJoinA(pszBasedirectory, pExtent->pszBasename);
|
---|
3688 | RTStrFree(pszBasedirectory);
|
---|
3689 | if (!pszFullname)
|
---|
3690 | return VERR_NO_STR_MEMORY;
|
---|
3691 | pExtent->pszFullname = pszFullname;
|
---|
3692 |
|
---|
3693 | /* Create file for extent. */
|
---|
3694 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3695 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags,
|
---|
3696 | true /* fCreate */));
|
---|
3697 | if (RT_FAILURE(rc))
|
---|
3698 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new file '%s'"), pExtent->pszFullname);
|
---|
3699 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3700 | {
|
---|
3701 | rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pExtent->pFile->pStorage, cbExtent,
|
---|
3702 | 0 /* fFlags */, pIfProgress,
|
---|
3703 | uPercentStart + cbOffset * uPercentSpan / cbSize,
|
---|
3704 | cbExtent * uPercentSpan / cbSize);
|
---|
3705 | if (RT_FAILURE(rc))
|
---|
3706 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not set size of new file '%s'"), pExtent->pszFullname);
|
---|
3707 | }
|
---|
3708 |
|
---|
3709 | /* Place descriptor file information (where integrated). */
|
---|
3710 | if (cExtents == 1 && !(uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
3711 | {
|
---|
3712 | pExtent->uDescriptorSector = 1;
|
---|
3713 | pExtent->cDescriptorSectors = VMDK_BYTE2SECTOR(pImage->cbDescAlloc);
|
---|
3714 | /* The descriptor is part of the (only) extent. */
|
---|
3715 | pExtent->pDescData = pImage->pDescData;
|
---|
3716 | pImage->pDescData = NULL;
|
---|
3717 | }
|
---|
3718 |
|
---|
3719 | if (!(uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
3720 | {
|
---|
3721 | uint64_t cSectorsPerGDE, cSectorsPerGD;
|
---|
3722 | pExtent->enmType = VMDKETYPE_HOSTED_SPARSE;
|
---|
3723 | pExtent->cSectors = VMDK_BYTE2SECTOR(RT_ALIGN_64(cbExtent, _64K));
|
---|
3724 | pExtent->cSectorsPerGrain = VMDK_BYTE2SECTOR(_64K);
|
---|
3725 | pExtent->cGTEntries = 512;
|
---|
3726 | cSectorsPerGDE = pExtent->cGTEntries * pExtent->cSectorsPerGrain;
|
---|
3727 | pExtent->cSectorsPerGDE = cSectorsPerGDE;
|
---|
3728 | pExtent->cGDEntries = (pExtent->cSectors + cSectorsPerGDE - 1) / cSectorsPerGDE;
|
---|
3729 | cSectorsPerGD = (pExtent->cGDEntries + (512 / sizeof(uint32_t) - 1)) / (512 / sizeof(uint32_t));
|
---|
3730 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3731 | {
|
---|
3732 | /* The spec says version is 1 for all VMDKs, but the vast
|
---|
3733 | * majority of streamOptimized VMDKs actually contain
|
---|
3734 | * version 3 - so go with the majority. Both are accepted. */
|
---|
3735 | pExtent->uVersion = 3;
|
---|
3736 | pExtent->uCompression = VMDK_COMPRESSION_DEFLATE;
|
---|
3737 | }
|
---|
3738 | }
|
---|
3739 | else
|
---|
3740 | {
|
---|
3741 | if (uImageFlags & VD_VMDK_IMAGE_FLAGS_ESX)
|
---|
3742 | pExtent->enmType = VMDKETYPE_VMFS;
|
---|
3743 | else
|
---|
3744 | pExtent->enmType = VMDKETYPE_FLAT;
|
---|
3745 | }
|
---|
3746 |
|
---|
3747 | pExtent->enmAccess = VMDKACCESS_READWRITE;
|
---|
3748 | pExtent->fUncleanShutdown = true;
|
---|
3749 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(cbExtent);
|
---|
3750 | pExtent->uSectorOffset = 0;
|
---|
3751 | pExtent->fMetaDirty = true;
|
---|
3752 |
|
---|
3753 | if (!(uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
3754 | {
|
---|
3755 | /* fPreAlloc should never be false because VMware can't use such images. */
|
---|
3756 | rc = vmdkCreateGrainDirectory(pImage, pExtent,
|
---|
3757 | RT_MAX( pExtent->uDescriptorSector
|
---|
3758 | + pExtent->cDescriptorSectors,
|
---|
3759 | 1),
|
---|
3760 | true /* fPreAlloc */);
|
---|
3761 | if (RT_FAILURE(rc))
|
---|
3762 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new grain directory in '%s'"), pExtent->pszFullname);
|
---|
3763 | }
|
---|
3764 |
|
---|
3765 | cbOffset += cbExtent;
|
---|
3766 |
|
---|
3767 | if (RT_SUCCESS(rc))
|
---|
3768 | vdIfProgress(pIfProgress, uPercentStart + cbOffset * uPercentSpan / cbSize);
|
---|
3769 |
|
---|
3770 | cbRemaining -= cbExtent;
|
---|
3771 | }
|
---|
3772 |
|
---|
3773 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_ESX)
|
---|
3774 | {
|
---|
3775 | /* VirtualBox doesn't care, but VMWare ESX freaks out if the wrong
|
---|
3776 | * controller type is set in an image. */
|
---|
3777 | rc = vmdkDescDDBSetStr(pImage, &pImage->Descriptor, "ddb.adapterType", "lsilogic");
|
---|
3778 | if (RT_FAILURE(rc))
|
---|
3779 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not set controller type to lsilogic in '%s'"), pImage->pszFilename);
|
---|
3780 | }
|
---|
3781 |
|
---|
3782 | const char *pszDescType = NULL;
|
---|
3783 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3784 | {
|
---|
3785 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_ESX)
|
---|
3786 | pszDescType = "vmfs";
|
---|
3787 | else
|
---|
3788 | pszDescType = (cExtents == 1)
|
---|
3789 | ? "monolithicFlat" : "twoGbMaxExtentFlat";
|
---|
3790 | }
|
---|
3791 | else
|
---|
3792 | {
|
---|
3793 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3794 | pszDescType = "streamOptimized";
|
---|
3795 | else
|
---|
3796 | {
|
---|
3797 | pszDescType = (cExtents == 1)
|
---|
3798 | ? "monolithicSparse" : "twoGbMaxExtentSparse";
|
---|
3799 | }
|
---|
3800 | }
|
---|
3801 | rc = vmdkDescBaseSetStr(pImage, &pImage->Descriptor, "createType",
|
---|
3802 | pszDescType);
|
---|
3803 | if (RT_FAILURE(rc))
|
---|
3804 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not set the image type in '%s'"), pImage->pszFilename);
|
---|
3805 | return rc;
|
---|
3806 | }
|
---|
3807 |
|
---|
3808 | /**
|
---|
3809 | * Internal: Create a real stream optimized VMDK using only linear writes.
|
---|
3810 | */
|
---|
3811 | static int vmdkCreateStreamImage(PVMDKIMAGE pImage, uint64_t cbSize)
|
---|
3812 | {
|
---|
3813 | int rc = vmdkCreateExtents(pImage, 1);
|
---|
3814 | if (RT_FAILURE(rc))
|
---|
3815 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new extent list in '%s'"), pImage->pszFilename);
|
---|
3816 |
|
---|
3817 | /* Basename strings needed for constructing the extent names. */
|
---|
3818 | const char *pszBasenameSubstr = RTPathFilename(pImage->pszFilename);
|
---|
3819 | AssertPtr(pszBasenameSubstr);
|
---|
3820 | size_t cbBasenameSubstr = strlen(pszBasenameSubstr) + 1;
|
---|
3821 |
|
---|
3822 | /* No separate descriptor file. */
|
---|
3823 | pImage->pFile = NULL;
|
---|
3824 |
|
---|
3825 | /* Set up all extents. */
|
---|
3826 | PVMDKEXTENT pExtent = &pImage->pExtents[0];
|
---|
3827 |
|
---|
3828 | /* Set up fullname/basename for extent description. Cannot use StrDup
|
---|
3829 | * for basename, as it is not guaranteed that the memory can be freed
|
---|
3830 | * with RTMemTmpFree, which must be used as in other code paths
|
---|
3831 | * StrDup is not usable. */
|
---|
3832 | char *pszBasename = (char *)RTMemTmpAlloc(cbBasenameSubstr);
|
---|
3833 | if (!pszBasename)
|
---|
3834 | return VERR_NO_MEMORY;
|
---|
3835 | memcpy(pszBasename, pszBasenameSubstr, cbBasenameSubstr);
|
---|
3836 | pExtent->pszBasename = pszBasename;
|
---|
3837 |
|
---|
3838 | char *pszBasedirectory = RTStrDup(pImage->pszFilename);
|
---|
3839 | RTPathStripFilename(pszBasedirectory);
|
---|
3840 | char *pszFullname = RTPathJoinA(pszBasedirectory, pExtent->pszBasename);
|
---|
3841 | RTStrFree(pszBasedirectory);
|
---|
3842 | if (!pszFullname)
|
---|
3843 | return VERR_NO_STR_MEMORY;
|
---|
3844 | pExtent->pszFullname = pszFullname;
|
---|
3845 |
|
---|
3846 | /* Create file for extent. Make it write only, no reading allowed. */
|
---|
3847 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszFullname,
|
---|
3848 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags,
|
---|
3849 | true /* fCreate */)
|
---|
3850 | & ~RTFILE_O_READ);
|
---|
3851 | if (RT_FAILURE(rc))
|
---|
3852 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new file '%s'"), pExtent->pszFullname);
|
---|
3853 |
|
---|
3854 | /* Place descriptor file information. */
|
---|
3855 | pExtent->uDescriptorSector = 1;
|
---|
3856 | pExtent->cDescriptorSectors = VMDK_BYTE2SECTOR(pImage->cbDescAlloc);
|
---|
3857 | /* The descriptor is part of the (only) extent. */
|
---|
3858 | pExtent->pDescData = pImage->pDescData;
|
---|
3859 | pImage->pDescData = NULL;
|
---|
3860 |
|
---|
3861 | uint64_t cSectorsPerGDE, cSectorsPerGD;
|
---|
3862 | pExtent->enmType = VMDKETYPE_HOSTED_SPARSE;
|
---|
3863 | pExtent->cSectors = VMDK_BYTE2SECTOR(RT_ALIGN_64(cbSize, _64K));
|
---|
3864 | pExtent->cSectorsPerGrain = VMDK_BYTE2SECTOR(_64K);
|
---|
3865 | pExtent->cGTEntries = 512;
|
---|
3866 | cSectorsPerGDE = pExtent->cGTEntries * pExtent->cSectorsPerGrain;
|
---|
3867 | pExtent->cSectorsPerGDE = cSectorsPerGDE;
|
---|
3868 | pExtent->cGDEntries = (pExtent->cSectors + cSectorsPerGDE - 1) / cSectorsPerGDE;
|
---|
3869 | cSectorsPerGD = (pExtent->cGDEntries + (512 / sizeof(uint32_t) - 1)) / (512 / sizeof(uint32_t));
|
---|
3870 |
|
---|
3871 | /* The spec says version is 1 for all VMDKs, but the vast
|
---|
3872 | * majority of streamOptimized VMDKs actually contain
|
---|
3873 | * version 3 - so go with the majority. Both are accepted. */
|
---|
3874 | pExtent->uVersion = 3;
|
---|
3875 | pExtent->uCompression = VMDK_COMPRESSION_DEFLATE;
|
---|
3876 | pExtent->fFooter = true;
|
---|
3877 |
|
---|
3878 | pExtent->enmAccess = VMDKACCESS_READONLY;
|
---|
3879 | pExtent->fUncleanShutdown = false;
|
---|
3880 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(cbSize);
|
---|
3881 | pExtent->uSectorOffset = 0;
|
---|
3882 | pExtent->fMetaDirty = true;
|
---|
3883 |
|
---|
3884 | /* Create grain directory, without preallocating it straight away. It will
|
---|
3885 | * be constructed on the fly when writing out the data and written when
|
---|
3886 | * closing the image. The end effect is that the full grain directory is
|
---|
3887 | * allocated, which is a requirement of the VMDK specs. */
|
---|
3888 | rc = vmdkCreateGrainDirectory(pImage, pExtent, VMDK_GD_AT_END,
|
---|
3889 | false /* fPreAlloc */);
|
---|
3890 | if (RT_FAILURE(rc))
|
---|
3891 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new grain directory in '%s'"), pExtent->pszFullname);
|
---|
3892 |
|
---|
3893 | rc = vmdkDescBaseSetStr(pImage, &pImage->Descriptor, "createType",
|
---|
3894 | "streamOptimized");
|
---|
3895 | if (RT_FAILURE(rc))
|
---|
3896 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not set the image type in '%s'"), pImage->pszFilename);
|
---|
3897 |
|
---|
3898 | return rc;
|
---|
3899 | }
|
---|
3900 |
|
---|
3901 | /**
|
---|
3902 | * Initializes the UUID fields in the DDB.
|
---|
3903 | *
|
---|
3904 | * @returns VBox status code.
|
---|
3905 | * @param pImage The VMDK image instance.
|
---|
3906 | */
|
---|
3907 | static int vmdkCreateImageDdbUuidsInit(PVMDKIMAGE pImage)
|
---|
3908 | {
|
---|
3909 | int rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor, VMDK_DDB_IMAGE_UUID, &pImage->ImageUuid);
|
---|
3910 | if (RT_SUCCESS(rc))
|
---|
3911 | {
|
---|
3912 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor, VMDK_DDB_PARENT_UUID, &pImage->ParentUuid);
|
---|
3913 | if (RT_SUCCESS(rc))
|
---|
3914 | {
|
---|
3915 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor, VMDK_DDB_MODIFICATION_UUID,
|
---|
3916 | &pImage->ModificationUuid);
|
---|
3917 | if (RT_SUCCESS(rc))
|
---|
3918 | {
|
---|
3919 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor, VMDK_DDB_PARENT_MODIFICATION_UUID,
|
---|
3920 | &pImage->ParentModificationUuid);
|
---|
3921 | if (RT_FAILURE(rc))
|
---|
3922 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
3923 | N_("VMDK: error storing parent modification UUID in new descriptor in '%s'"), pImage->pszFilename);
|
---|
3924 | }
|
---|
3925 | else
|
---|
3926 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
3927 | N_("VMDK: error storing modification UUID in new descriptor in '%s'"), pImage->pszFilename);
|
---|
3928 | }
|
---|
3929 | else
|
---|
3930 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
3931 | N_("VMDK: error storing parent image UUID in new descriptor in '%s'"), pImage->pszFilename);
|
---|
3932 | }
|
---|
3933 | else
|
---|
3934 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
3935 | N_("VMDK: error storing image UUID in new descriptor in '%s'"), pImage->pszFilename);
|
---|
3936 |
|
---|
3937 | return rc;
|
---|
3938 | }
|
---|
3939 |
|
---|
3940 | /**
|
---|
3941 | * Internal: The actual code for creating any VMDK variant currently in
|
---|
3942 | * existence on hosted environments.
|
---|
3943 | */
|
---|
3944 | static int vmdkCreateImage(PVMDKIMAGE pImage, uint64_t cbSize,
|
---|
3945 | unsigned uImageFlags, const char *pszComment,
|
---|
3946 | PCVDGEOMETRY pPCHSGeometry,
|
---|
3947 | PCVDGEOMETRY pLCHSGeometry, PCRTUUID pUuid,
|
---|
3948 | PVDINTERFACEPROGRESS pIfProgress,
|
---|
3949 | unsigned uPercentStart, unsigned uPercentSpan)
|
---|
3950 | {
|
---|
3951 | pImage->uImageFlags = uImageFlags;
|
---|
3952 |
|
---|
3953 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
3954 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
3955 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
3956 |
|
---|
3957 | int rc = vmdkCreateDescriptor(pImage, pImage->pDescData, pImage->cbDescAlloc,
|
---|
3958 | &pImage->Descriptor);
|
---|
3959 | if (RT_SUCCESS(rc))
|
---|
3960 | {
|
---|
3961 | if ( (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3962 | && (uImageFlags & VD_VMDK_IMAGE_FLAGS_RAWDISK))
|
---|
3963 | {
|
---|
3964 | /* Raw disk image (includes raw partition). */
|
---|
3965 | const PVDISKRAW pRaw = (const PVDISKRAW)pszComment;
|
---|
3966 | /* As the comment is misused, zap it so that no garbage comment
|
---|
3967 | * is set below. */
|
---|
3968 | pszComment = NULL;
|
---|
3969 | rc = vmdkCreateRawImage(pImage, pRaw, cbSize);
|
---|
3970 | }
|
---|
3971 | else if (uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3972 | {
|
---|
3973 | /* Stream optimized sparse image (monolithic). */
|
---|
3974 | rc = vmdkCreateStreamImage(pImage, cbSize);
|
---|
3975 | }
|
---|
3976 | else
|
---|
3977 | {
|
---|
3978 | /* Regular fixed or sparse image (monolithic or split). */
|
---|
3979 | rc = vmdkCreateRegularImage(pImage, cbSize, uImageFlags,
|
---|
3980 | pIfProgress, uPercentStart,
|
---|
3981 | uPercentSpan * 95 / 100);
|
---|
3982 | }
|
---|
3983 |
|
---|
3984 | if (RT_SUCCESS(rc))
|
---|
3985 | {
|
---|
3986 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan * 98 / 100);
|
---|
3987 |
|
---|
3988 | pImage->cbSize = cbSize;
|
---|
3989 |
|
---|
3990 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
3991 | {
|
---|
3992 | PVMDKEXTENT pExtent = &pImage->pExtents[i];
|
---|
3993 |
|
---|
3994 | rc = vmdkDescExtInsert(pImage, &pImage->Descriptor, pExtent->enmAccess,
|
---|
3995 | pExtent->cNominalSectors, pExtent->enmType,
|
---|
3996 | pExtent->pszBasename, pExtent->uSectorOffset);
|
---|
3997 | if (RT_FAILURE(rc))
|
---|
3998 | {
|
---|
3999 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not insert the extent list into descriptor in '%s'"), pImage->pszFilename);
|
---|
4000 | break;
|
---|
4001 | }
|
---|
4002 | }
|
---|
4003 |
|
---|
4004 | if (RT_SUCCESS(rc))
|
---|
4005 | vmdkDescExtRemoveDummy(pImage, &pImage->Descriptor);
|
---|
4006 |
|
---|
4007 | if ( RT_SUCCESS(rc)
|
---|
4008 | && pPCHSGeometry->cCylinders != 0
|
---|
4009 | && pPCHSGeometry->cHeads != 0
|
---|
4010 | && pPCHSGeometry->cSectors != 0)
|
---|
4011 | rc = vmdkDescSetPCHSGeometry(pImage, pPCHSGeometry);
|
---|
4012 |
|
---|
4013 | if ( RT_SUCCESS(rc)
|
---|
4014 | && pLCHSGeometry->cCylinders != 0
|
---|
4015 | && pLCHSGeometry->cHeads != 0
|
---|
4016 | && pLCHSGeometry->cSectors != 0)
|
---|
4017 | rc = vmdkDescSetLCHSGeometry(pImage, pLCHSGeometry);
|
---|
4018 |
|
---|
4019 | pImage->LCHSGeometry = *pLCHSGeometry;
|
---|
4020 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
4021 |
|
---|
4022 | pImage->ImageUuid = *pUuid;
|
---|
4023 | RTUuidClear(&pImage->ParentUuid);
|
---|
4024 | RTUuidClear(&pImage->ModificationUuid);
|
---|
4025 | RTUuidClear(&pImage->ParentModificationUuid);
|
---|
4026 |
|
---|
4027 | if (RT_SUCCESS(rc))
|
---|
4028 | rc = vmdkCreateImageDdbUuidsInit(pImage);
|
---|
4029 |
|
---|
4030 | if (RT_SUCCESS(rc))
|
---|
4031 | rc = vmdkAllocateGrainTableCache(pImage);
|
---|
4032 |
|
---|
4033 | if (RT_SUCCESS(rc))
|
---|
4034 | {
|
---|
4035 | rc = vmdkSetImageComment(pImage, pszComment);
|
---|
4036 | if (RT_FAILURE(rc))
|
---|
4037 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot set image comment in '%s'"), pImage->pszFilename);
|
---|
4038 | }
|
---|
4039 |
|
---|
4040 | if (RT_SUCCESS(rc))
|
---|
4041 | {
|
---|
4042 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan * 99 / 100);
|
---|
4043 |
|
---|
4044 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
4045 | {
|
---|
4046 | /* streamOptimized is a bit special, we cannot trigger the flush
|
---|
4047 | * until all data has been written. So we write the necessary
|
---|
4048 | * information explicitly. */
|
---|
4049 | pImage->pExtents[0].cDescriptorSectors = VMDK_BYTE2SECTOR(RT_ALIGN_64( pImage->Descriptor.aLines[pImage->Descriptor.cLines]
|
---|
4050 | - pImage->Descriptor.aLines[0], 512));
|
---|
4051 | rc = vmdkWriteMetaSparseExtent(pImage, &pImage->pExtents[0], 0, NULL);
|
---|
4052 | if (RT_SUCCESS(rc))
|
---|
4053 | {
|
---|
4054 | rc = vmdkWriteDescriptor(pImage, NULL);
|
---|
4055 | if (RT_FAILURE(rc))
|
---|
4056 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write VMDK descriptor in '%s'"), pImage->pszFilename);
|
---|
4057 | }
|
---|
4058 | else
|
---|
4059 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write VMDK header in '%s'"), pImage->pszFilename);
|
---|
4060 | }
|
---|
4061 | else
|
---|
4062 | rc = vmdkFlushImage(pImage, NULL);
|
---|
4063 | }
|
---|
4064 | }
|
---|
4065 | }
|
---|
4066 | else
|
---|
4067 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new descriptor in '%s'"), pImage->pszFilename);
|
---|
4068 |
|
---|
4069 |
|
---|
4070 | if (RT_SUCCESS(rc))
|
---|
4071 | {
|
---|
4072 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
4073 | pImage->RegionList.fFlags = 0;
|
---|
4074 | pImage->RegionList.cRegions = 1;
|
---|
4075 |
|
---|
4076 | pRegion->offRegion = 0; /* Disk start. */
|
---|
4077 | pRegion->cbBlock = 512;
|
---|
4078 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
4079 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
4080 | pRegion->cbData = 512;
|
---|
4081 | pRegion->cbMetadata = 0;
|
---|
4082 | pRegion->cRegionBlocksOrBytes = pImage->cbSize;
|
---|
4083 |
|
---|
4084 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
|
---|
4085 | }
|
---|
4086 | else
|
---|
4087 | vmdkFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
|
---|
4088 | return rc;
|
---|
4089 | }
|
---|
4090 |
|
---|
4091 | /**
|
---|
4092 | * Internal: Update image comment.
|
---|
4093 | */
|
---|
4094 | static int vmdkSetImageComment(PVMDKIMAGE pImage, const char *pszComment)
|
---|
4095 | {
|
---|
4096 | char *pszCommentEncoded = NULL;
|
---|
4097 | if (pszComment)
|
---|
4098 | {
|
---|
4099 | pszCommentEncoded = vmdkEncodeString(pszComment);
|
---|
4100 | if (!pszCommentEncoded)
|
---|
4101 | return VERR_NO_MEMORY;
|
---|
4102 | }
|
---|
4103 |
|
---|
4104 | int rc = vmdkDescDDBSetStr(pImage, &pImage->Descriptor,
|
---|
4105 | "ddb.comment", pszCommentEncoded);
|
---|
4106 | if (pszCommentEncoded)
|
---|
4107 | RTStrFree(pszCommentEncoded);
|
---|
4108 | if (RT_FAILURE(rc))
|
---|
4109 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing image comment in descriptor in '%s'"), pImage->pszFilename);
|
---|
4110 | return VINF_SUCCESS;
|
---|
4111 | }
|
---|
4112 |
|
---|
4113 | /**
|
---|
4114 | * Internal. Clear the grain table buffer for real stream optimized writing.
|
---|
4115 | */
|
---|
4116 | static void vmdkStreamClearGT(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
4117 | {
|
---|
4118 | uint32_t cCacheLines = RT_ALIGN(pExtent->cGTEntries, VMDK_GT_CACHELINE_SIZE) / VMDK_GT_CACHELINE_SIZE;
|
---|
4119 | for (uint32_t i = 0; i < cCacheLines; i++)
|
---|
4120 | memset(&pImage->pGTCache->aGTCache[i].aGTData[0], '\0',
|
---|
4121 | VMDK_GT_CACHELINE_SIZE * sizeof(uint32_t));
|
---|
4122 | }
|
---|
4123 |
|
---|
4124 | /**
|
---|
4125 | * Internal. Flush the grain table buffer for real stream optimized writing.
|
---|
4126 | */
|
---|
4127 | static int vmdkStreamFlushGT(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
4128 | uint32_t uGDEntry)
|
---|
4129 | {
|
---|
4130 | int rc = VINF_SUCCESS;
|
---|
4131 | uint32_t cCacheLines = RT_ALIGN(pExtent->cGTEntries, VMDK_GT_CACHELINE_SIZE) / VMDK_GT_CACHELINE_SIZE;
|
---|
4132 |
|
---|
4133 | /* VMware does not write out completely empty grain tables in the case
|
---|
4134 | * of streamOptimized images, which according to my interpretation of
|
---|
4135 | * the VMDK 1.1 spec is bending the rules. Since they do it and we can
|
---|
4136 | * handle it without problems do it the same way and save some bytes. */
|
---|
4137 | bool fAllZero = true;
|
---|
4138 | for (uint32_t i = 0; i < cCacheLines; i++)
|
---|
4139 | {
|
---|
4140 | /* Convert the grain table to little endian in place, as it will not
|
---|
4141 | * be used at all after this function has been called. */
|
---|
4142 | uint32_t *pGTTmp = &pImage->pGTCache->aGTCache[i].aGTData[0];
|
---|
4143 | for (uint32_t j = 0; j < VMDK_GT_CACHELINE_SIZE; j++, pGTTmp++)
|
---|
4144 | if (*pGTTmp)
|
---|
4145 | {
|
---|
4146 | fAllZero = false;
|
---|
4147 | break;
|
---|
4148 | }
|
---|
4149 | if (!fAllZero)
|
---|
4150 | break;
|
---|
4151 | }
|
---|
4152 | if (fAllZero)
|
---|
4153 | return VINF_SUCCESS;
|
---|
4154 |
|
---|
4155 | uint64_t uFileOffset = pExtent->uAppendPosition;
|
---|
4156 | if (!uFileOffset)
|
---|
4157 | return VERR_INTERNAL_ERROR;
|
---|
4158 | /* Align to sector, as the previous write could have been any size. */
|
---|
4159 | uFileOffset = RT_ALIGN_64(uFileOffset, 512);
|
---|
4160 |
|
---|
4161 | /* Grain table marker. */
|
---|
4162 | uint8_t aMarker[512];
|
---|
4163 | PVMDKMARKER pMarker = (PVMDKMARKER)&aMarker[0];
|
---|
4164 | memset(pMarker, '\0', sizeof(aMarker));
|
---|
4165 | pMarker->uSector = RT_H2LE_U64(VMDK_BYTE2SECTOR((uint64_t)pExtent->cGTEntries * sizeof(uint32_t)));
|
---|
4166 | pMarker->uType = RT_H2LE_U32(VMDK_MARKER_GT);
|
---|
4167 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage, uFileOffset,
|
---|
4168 | aMarker, sizeof(aMarker));
|
---|
4169 | AssertRC(rc);
|
---|
4170 | uFileOffset += 512;
|
---|
4171 |
|
---|
4172 | if (!pExtent->pGD || pExtent->pGD[uGDEntry])
|
---|
4173 | return VERR_INTERNAL_ERROR;
|
---|
4174 |
|
---|
4175 | pExtent->pGD[uGDEntry] = VMDK_BYTE2SECTOR(uFileOffset);
|
---|
4176 |
|
---|
4177 | for (uint32_t i = 0; i < cCacheLines; i++)
|
---|
4178 | {
|
---|
4179 | /* Convert the grain table to little endian in place, as it will not
|
---|
4180 | * be used at all after this function has been called. */
|
---|
4181 | uint32_t *pGTTmp = &pImage->pGTCache->aGTCache[i].aGTData[0];
|
---|
4182 | for (uint32_t j = 0; j < VMDK_GT_CACHELINE_SIZE; j++, pGTTmp++)
|
---|
4183 | *pGTTmp = RT_H2LE_U32(*pGTTmp);
|
---|
4184 |
|
---|
4185 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage, uFileOffset,
|
---|
4186 | &pImage->pGTCache->aGTCache[i].aGTData[0],
|
---|
4187 | VMDK_GT_CACHELINE_SIZE * sizeof(uint32_t));
|
---|
4188 | uFileOffset += VMDK_GT_CACHELINE_SIZE * sizeof(uint32_t);
|
---|
4189 | if (RT_FAILURE(rc))
|
---|
4190 | break;
|
---|
4191 | }
|
---|
4192 | Assert(!(uFileOffset % 512));
|
---|
4193 | pExtent->uAppendPosition = RT_ALIGN_64(uFileOffset, 512);
|
---|
4194 | return rc;
|
---|
4195 | }
|
---|
4196 |
|
---|
4197 | /**
|
---|
4198 | * Internal. Free all allocated space for representing an image, and optionally
|
---|
4199 | * delete the image from disk.
|
---|
4200 | */
|
---|
4201 | static int vmdkFreeImage(PVMDKIMAGE pImage, bool fDelete)
|
---|
4202 | {
|
---|
4203 | int rc = VINF_SUCCESS;
|
---|
4204 |
|
---|
4205 | /* Freeing a never allocated image (e.g. because the open failed) is
|
---|
4206 | * not signalled as an error. After all nothing bad happens. */
|
---|
4207 | if (pImage)
|
---|
4208 | {
|
---|
4209 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
4210 | {
|
---|
4211 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
4212 | {
|
---|
4213 | /* Check if all extents are clean. */
|
---|
4214 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
4215 | {
|
---|
4216 | Assert(!pImage->pExtents[i].fUncleanShutdown);
|
---|
4217 | }
|
---|
4218 | }
|
---|
4219 | else
|
---|
4220 | {
|
---|
4221 | /* Mark all extents as clean. */
|
---|
4222 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
4223 | {
|
---|
4224 | if ( pImage->pExtents[i].enmType == VMDKETYPE_HOSTED_SPARSE
|
---|
4225 | && pImage->pExtents[i].fUncleanShutdown)
|
---|
4226 | {
|
---|
4227 | pImage->pExtents[i].fUncleanShutdown = false;
|
---|
4228 | pImage->pExtents[i].fMetaDirty = true;
|
---|
4229 | }
|
---|
4230 |
|
---|
4231 | /* From now on it's not safe to append any more data. */
|
---|
4232 | pImage->pExtents[i].uAppendPosition = 0;
|
---|
4233 | }
|
---|
4234 | }
|
---|
4235 | }
|
---|
4236 |
|
---|
4237 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
4238 | {
|
---|
4239 | /* No need to write any pending data if the file will be deleted
|
---|
4240 | * or if the new file wasn't successfully created. */
|
---|
4241 | if ( !fDelete && pImage->pExtents
|
---|
4242 | && pImage->pExtents[0].cGTEntries
|
---|
4243 | && pImage->pExtents[0].uAppendPosition)
|
---|
4244 | {
|
---|
4245 | PVMDKEXTENT pExtent = &pImage->pExtents[0];
|
---|
4246 | uint32_t uLastGDEntry = pExtent->uLastGrainAccess / pExtent->cGTEntries;
|
---|
4247 | rc = vmdkStreamFlushGT(pImage, pExtent, uLastGDEntry);
|
---|
4248 | AssertRC(rc);
|
---|
4249 | vmdkStreamClearGT(pImage, pExtent);
|
---|
4250 | for (uint32_t i = uLastGDEntry + 1; i < pExtent->cGDEntries; i++)
|
---|
4251 | {
|
---|
4252 | rc = vmdkStreamFlushGT(pImage, pExtent, i);
|
---|
4253 | AssertRC(rc);
|
---|
4254 | }
|
---|
4255 |
|
---|
4256 | uint64_t uFileOffset = pExtent->uAppendPosition;
|
---|
4257 | if (!uFileOffset)
|
---|
4258 | return VERR_INTERNAL_ERROR;
|
---|
4259 | uFileOffset = RT_ALIGN_64(uFileOffset, 512);
|
---|
4260 |
|
---|
4261 | /* From now on it's not safe to append any more data. */
|
---|
4262 | pExtent->uAppendPosition = 0;
|
---|
4263 |
|
---|
4264 | /* Grain directory marker. */
|
---|
4265 | uint8_t aMarker[512];
|
---|
4266 | PVMDKMARKER pMarker = (PVMDKMARKER)&aMarker[0];
|
---|
4267 | memset(pMarker, '\0', sizeof(aMarker));
|
---|
4268 | pMarker->uSector = VMDK_BYTE2SECTOR(RT_ALIGN_64(RT_H2LE_U64((uint64_t)pExtent->cGDEntries * sizeof(uint32_t)), 512));
|
---|
4269 | pMarker->uType = RT_H2LE_U32(VMDK_MARKER_GD);
|
---|
4270 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage, uFileOffset,
|
---|
4271 | aMarker, sizeof(aMarker));
|
---|
4272 | AssertRC(rc);
|
---|
4273 | uFileOffset += 512;
|
---|
4274 |
|
---|
4275 | /* Write grain directory in little endian style. The array will
|
---|
4276 | * not be used after this, so convert in place. */
|
---|
4277 | uint32_t *pGDTmp = pExtent->pGD;
|
---|
4278 | for (uint32_t i = 0; i < pExtent->cGDEntries; i++, pGDTmp++)
|
---|
4279 | *pGDTmp = RT_H2LE_U32(*pGDTmp);
|
---|
4280 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4281 | uFileOffset, pExtent->pGD,
|
---|
4282 | pExtent->cGDEntries * sizeof(uint32_t));
|
---|
4283 | AssertRC(rc);
|
---|
4284 |
|
---|
4285 | pExtent->uSectorGD = VMDK_BYTE2SECTOR(uFileOffset);
|
---|
4286 | pExtent->uSectorRGD = VMDK_BYTE2SECTOR(uFileOffset);
|
---|
4287 | uFileOffset = RT_ALIGN_64( uFileOffset
|
---|
4288 | + pExtent->cGDEntries * sizeof(uint32_t),
|
---|
4289 | 512);
|
---|
4290 |
|
---|
4291 | /* Footer marker. */
|
---|
4292 | memset(pMarker, '\0', sizeof(aMarker));
|
---|
4293 | pMarker->uSector = VMDK_BYTE2SECTOR(512);
|
---|
4294 | pMarker->uType = RT_H2LE_U32(VMDK_MARKER_FOOTER);
|
---|
4295 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4296 | uFileOffset, aMarker, sizeof(aMarker));
|
---|
4297 | AssertRC(rc);
|
---|
4298 |
|
---|
4299 | uFileOffset += 512;
|
---|
4300 | rc = vmdkWriteMetaSparseExtent(pImage, pExtent, uFileOffset, NULL);
|
---|
4301 | AssertRC(rc);
|
---|
4302 |
|
---|
4303 | uFileOffset += 512;
|
---|
4304 | /* End-of-stream marker. */
|
---|
4305 | memset(pMarker, '\0', sizeof(aMarker));
|
---|
4306 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4307 | uFileOffset, aMarker, sizeof(aMarker));
|
---|
4308 | AssertRC(rc);
|
---|
4309 | }
|
---|
4310 | }
|
---|
4311 | else if (!fDelete)
|
---|
4312 | vmdkFlushImage(pImage, NULL);
|
---|
4313 |
|
---|
4314 | if (pImage->pExtents != NULL)
|
---|
4315 | {
|
---|
4316 | for (unsigned i = 0 ; i < pImage->cExtents; i++)
|
---|
4317 | {
|
---|
4318 | int rc2 = vmdkFreeExtentData(pImage, &pImage->pExtents[i], fDelete);
|
---|
4319 | if (RT_SUCCESS(rc))
|
---|
4320 | rc = rc2; /* Propogate any error when closing the file. */
|
---|
4321 | }
|
---|
4322 | RTMemFree(pImage->pExtents);
|
---|
4323 | pImage->pExtents = NULL;
|
---|
4324 | }
|
---|
4325 | pImage->cExtents = 0;
|
---|
4326 | if (pImage->pFile != NULL)
|
---|
4327 | {
|
---|
4328 | int rc2 = vmdkFileClose(pImage, &pImage->pFile, fDelete);
|
---|
4329 | if (RT_SUCCESS(rc))
|
---|
4330 | rc = rc2; /* Propogate any error when closing the file. */
|
---|
4331 | }
|
---|
4332 | int rc2 = vmdkFileCheckAllClose(pImage);
|
---|
4333 | if (RT_SUCCESS(rc))
|
---|
4334 | rc = rc2; /* Propogate any error when closing the file. */
|
---|
4335 |
|
---|
4336 | if (pImage->pGTCache)
|
---|
4337 | {
|
---|
4338 | RTMemFree(pImage->pGTCache);
|
---|
4339 | pImage->pGTCache = NULL;
|
---|
4340 | }
|
---|
4341 | if (pImage->pDescData)
|
---|
4342 | {
|
---|
4343 | RTMemFree(pImage->pDescData);
|
---|
4344 | pImage->pDescData = NULL;
|
---|
4345 | }
|
---|
4346 | }
|
---|
4347 |
|
---|
4348 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
4349 | return rc;
|
---|
4350 | }
|
---|
4351 |
|
---|
4352 | /**
|
---|
4353 | * Internal. Flush image data (and metadata) to disk.
|
---|
4354 | */
|
---|
4355 | static int vmdkFlushImage(PVMDKIMAGE pImage, PVDIOCTX pIoCtx)
|
---|
4356 | {
|
---|
4357 | PVMDKEXTENT pExtent;
|
---|
4358 | int rc = VINF_SUCCESS;
|
---|
4359 |
|
---|
4360 | /* Update descriptor if changed. */
|
---|
4361 | if (pImage->Descriptor.fDirty)
|
---|
4362 | rc = vmdkWriteDescriptor(pImage, pIoCtx);
|
---|
4363 |
|
---|
4364 | if (RT_SUCCESS(rc))
|
---|
4365 | {
|
---|
4366 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
4367 | {
|
---|
4368 | pExtent = &pImage->pExtents[i];
|
---|
4369 | if (pExtent->pFile != NULL && pExtent->fMetaDirty)
|
---|
4370 | {
|
---|
4371 | switch (pExtent->enmType)
|
---|
4372 | {
|
---|
4373 | case VMDKETYPE_HOSTED_SPARSE:
|
---|
4374 | if (!pExtent->fFooter)
|
---|
4375 | rc = vmdkWriteMetaSparseExtent(pImage, pExtent, 0, pIoCtx);
|
---|
4376 | else
|
---|
4377 | {
|
---|
4378 | uint64_t uFileOffset = pExtent->uAppendPosition;
|
---|
4379 | /* Simply skip writing anything if the streamOptimized
|
---|
4380 | * image hasn't been just created. */
|
---|
4381 | if (!uFileOffset)
|
---|
4382 | break;
|
---|
4383 | uFileOffset = RT_ALIGN_64(uFileOffset, 512);
|
---|
4384 | rc = vmdkWriteMetaSparseExtent(pImage, pExtent,
|
---|
4385 | uFileOffset, pIoCtx);
|
---|
4386 | }
|
---|
4387 | break;
|
---|
4388 | case VMDKETYPE_VMFS:
|
---|
4389 | case VMDKETYPE_FLAT:
|
---|
4390 | /* Nothing to do. */
|
---|
4391 | break;
|
---|
4392 | case VMDKETYPE_ZERO:
|
---|
4393 | default:
|
---|
4394 | AssertMsgFailed(("extent with type %d marked as dirty\n",
|
---|
4395 | pExtent->enmType));
|
---|
4396 | break;
|
---|
4397 | }
|
---|
4398 | }
|
---|
4399 |
|
---|
4400 | if (RT_FAILURE(rc))
|
---|
4401 | break;
|
---|
4402 |
|
---|
4403 | switch (pExtent->enmType)
|
---|
4404 | {
|
---|
4405 | case VMDKETYPE_HOSTED_SPARSE:
|
---|
4406 | case VMDKETYPE_VMFS:
|
---|
4407 | case VMDKETYPE_FLAT:
|
---|
4408 | /** @todo implement proper path absolute check. */
|
---|
4409 | if ( pExtent->pFile != NULL
|
---|
4410 | && !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
4411 | && !(pExtent->pszBasename[0] == RTPATH_SLASH))
|
---|
4412 | rc = vdIfIoIntFileFlush(pImage->pIfIo, pExtent->pFile->pStorage, pIoCtx,
|
---|
4413 | NULL, NULL);
|
---|
4414 | break;
|
---|
4415 | case VMDKETYPE_ZERO:
|
---|
4416 | /* No need to do anything for this extent. */
|
---|
4417 | break;
|
---|
4418 | default:
|
---|
4419 | AssertMsgFailed(("unknown extent type %d\n", pExtent->enmType));
|
---|
4420 | break;
|
---|
4421 | }
|
---|
4422 | }
|
---|
4423 | }
|
---|
4424 |
|
---|
4425 | return rc;
|
---|
4426 | }
|
---|
4427 |
|
---|
4428 | /**
|
---|
4429 | * Internal. Find extent corresponding to the sector number in the disk.
|
---|
4430 | */
|
---|
4431 | static int vmdkFindExtent(PVMDKIMAGE pImage, uint64_t offSector,
|
---|
4432 | PVMDKEXTENT *ppExtent, uint64_t *puSectorInExtent)
|
---|
4433 | {
|
---|
4434 | PVMDKEXTENT pExtent = NULL;
|
---|
4435 | int rc = VINF_SUCCESS;
|
---|
4436 |
|
---|
4437 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
4438 | {
|
---|
4439 | if (offSector < pImage->pExtents[i].cNominalSectors)
|
---|
4440 | {
|
---|
4441 | pExtent = &pImage->pExtents[i];
|
---|
4442 | *puSectorInExtent = offSector + pImage->pExtents[i].uSectorOffset;
|
---|
4443 | break;
|
---|
4444 | }
|
---|
4445 | offSector -= pImage->pExtents[i].cNominalSectors;
|
---|
4446 | }
|
---|
4447 |
|
---|
4448 | if (pExtent)
|
---|
4449 | *ppExtent = pExtent;
|
---|
4450 | else
|
---|
4451 | rc = VERR_IO_SECTOR_NOT_FOUND;
|
---|
4452 |
|
---|
4453 | return rc;
|
---|
4454 | }
|
---|
4455 |
|
---|
4456 | /**
|
---|
4457 | * Internal. Hash function for placing the grain table hash entries.
|
---|
4458 | */
|
---|
4459 | static uint32_t vmdkGTCacheHash(PVMDKGTCACHE pCache, uint64_t uSector,
|
---|
4460 | unsigned uExtent)
|
---|
4461 | {
|
---|
4462 | /** @todo this hash function is quite simple, maybe use a better one which
|
---|
4463 | * scrambles the bits better. */
|
---|
4464 | return (uSector + uExtent) % pCache->cEntries;
|
---|
4465 | }
|
---|
4466 |
|
---|
4467 | /**
|
---|
4468 | * Internal. Get sector number in the extent file from the relative sector
|
---|
4469 | * number in the extent.
|
---|
4470 | */
|
---|
4471 | static int vmdkGetSector(PVMDKIMAGE pImage, PVDIOCTX pIoCtx,
|
---|
4472 | PVMDKEXTENT pExtent, uint64_t uSector,
|
---|
4473 | uint64_t *puExtentSector)
|
---|
4474 | {
|
---|
4475 | PVMDKGTCACHE pCache = pImage->pGTCache;
|
---|
4476 | uint64_t uGDIndex, uGTSector, uGTBlock;
|
---|
4477 | uint32_t uGTHash, uGTBlockIndex;
|
---|
4478 | PVMDKGTCACHEENTRY pGTCacheEntry;
|
---|
4479 | uint32_t aGTDataTmp[VMDK_GT_CACHELINE_SIZE];
|
---|
4480 | int rc;
|
---|
4481 |
|
---|
4482 | /* For newly created and readonly/sequentially opened streamOptimized
|
---|
4483 | * images this must be a no-op, as the grain directory is not there. */
|
---|
4484 | if ( ( pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED
|
---|
4485 | && pExtent->uAppendPosition)
|
---|
4486 | || ( pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED
|
---|
4487 | && pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY
|
---|
4488 | && pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
|
---|
4489 | {
|
---|
4490 | *puExtentSector = 0;
|
---|
4491 | return VINF_SUCCESS;
|
---|
4492 | }
|
---|
4493 |
|
---|
4494 | uGDIndex = uSector / pExtent->cSectorsPerGDE;
|
---|
4495 | if (uGDIndex >= pExtent->cGDEntries)
|
---|
4496 | return VERR_OUT_OF_RANGE;
|
---|
4497 | uGTSector = pExtent->pGD[uGDIndex];
|
---|
4498 | if (!uGTSector)
|
---|
4499 | {
|
---|
4500 | /* There is no grain table referenced by this grain directory
|
---|
4501 | * entry. So there is absolutely no data in this area. */
|
---|
4502 | *puExtentSector = 0;
|
---|
4503 | return VINF_SUCCESS;
|
---|
4504 | }
|
---|
4505 |
|
---|
4506 | uGTBlock = uSector / (pExtent->cSectorsPerGrain * VMDK_GT_CACHELINE_SIZE);
|
---|
4507 | uGTHash = vmdkGTCacheHash(pCache, uGTBlock, pExtent->uExtent);
|
---|
4508 | pGTCacheEntry = &pCache->aGTCache[uGTHash];
|
---|
4509 | if ( pGTCacheEntry->uExtent != pExtent->uExtent
|
---|
4510 | || pGTCacheEntry->uGTBlock != uGTBlock)
|
---|
4511 | {
|
---|
4512 | /* Cache miss, fetch data from disk. */
|
---|
4513 | PVDMETAXFER pMetaXfer;
|
---|
4514 | rc = vdIfIoIntFileReadMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4515 | VMDK_SECTOR2BYTE(uGTSector) + (uGTBlock % (pExtent->cGTEntries / VMDK_GT_CACHELINE_SIZE)) * sizeof(aGTDataTmp),
|
---|
4516 | aGTDataTmp, sizeof(aGTDataTmp), pIoCtx, &pMetaXfer, NULL, NULL);
|
---|
4517 | if (RT_FAILURE(rc))
|
---|
4518 | return rc;
|
---|
4519 | /* We can release the metadata transfer immediately. */
|
---|
4520 | vdIfIoIntMetaXferRelease(pImage->pIfIo, pMetaXfer);
|
---|
4521 | pGTCacheEntry->uExtent = pExtent->uExtent;
|
---|
4522 | pGTCacheEntry->uGTBlock = uGTBlock;
|
---|
4523 | for (unsigned i = 0; i < VMDK_GT_CACHELINE_SIZE; i++)
|
---|
4524 | pGTCacheEntry->aGTData[i] = RT_LE2H_U32(aGTDataTmp[i]);
|
---|
4525 | }
|
---|
4526 | uGTBlockIndex = (uSector / pExtent->cSectorsPerGrain) % VMDK_GT_CACHELINE_SIZE;
|
---|
4527 | uint32_t uGrainSector = pGTCacheEntry->aGTData[uGTBlockIndex];
|
---|
4528 | if (uGrainSector)
|
---|
4529 | *puExtentSector = uGrainSector + uSector % pExtent->cSectorsPerGrain;
|
---|
4530 | else
|
---|
4531 | *puExtentSector = 0;
|
---|
4532 | return VINF_SUCCESS;
|
---|
4533 | }
|
---|
4534 |
|
---|
4535 | /**
|
---|
4536 | * Internal. Writes the grain and also if necessary the grain tables.
|
---|
4537 | * Uses the grain table cache as a true grain table.
|
---|
4538 | */
|
---|
4539 | static int vmdkStreamAllocGrain(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
4540 | uint64_t uSector, PVDIOCTX pIoCtx,
|
---|
4541 | uint64_t cbWrite)
|
---|
4542 | {
|
---|
4543 | uint32_t uGrain;
|
---|
4544 | uint32_t uGDEntry, uLastGDEntry;
|
---|
4545 | uint32_t cbGrain = 0;
|
---|
4546 | uint32_t uCacheLine, uCacheEntry;
|
---|
4547 | const void *pData;
|
---|
4548 | int rc;
|
---|
4549 |
|
---|
4550 | /* Very strict requirements: always write at least one full grain, with
|
---|
4551 | * proper alignment. Everything else would require reading of already
|
---|
4552 | * written data, which we don't support for obvious reasons. The only
|
---|
4553 | * exception is the last grain, and only if the image size specifies
|
---|
4554 | * that only some portion holds data. In any case the write must be
|
---|
4555 | * within the image limits, no "overshoot" allowed. */
|
---|
4556 | if ( cbWrite == 0
|
---|
4557 | || ( cbWrite < VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain)
|
---|
4558 | && pExtent->cNominalSectors - uSector >= pExtent->cSectorsPerGrain)
|
---|
4559 | || uSector % pExtent->cSectorsPerGrain
|
---|
4560 | || uSector + VMDK_BYTE2SECTOR(cbWrite) > pExtent->cNominalSectors)
|
---|
4561 | return VERR_INVALID_PARAMETER;
|
---|
4562 |
|
---|
4563 | /* Clip write range to at most the rest of the grain. */
|
---|
4564 | cbWrite = RT_MIN(cbWrite, VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain - uSector % pExtent->cSectorsPerGrain));
|
---|
4565 |
|
---|
4566 | /* Do not allow to go back. */
|
---|
4567 | uGrain = uSector / pExtent->cSectorsPerGrain;
|
---|
4568 | uCacheLine = uGrain % pExtent->cGTEntries / VMDK_GT_CACHELINE_SIZE;
|
---|
4569 | uCacheEntry = uGrain % VMDK_GT_CACHELINE_SIZE;
|
---|
4570 | uGDEntry = uGrain / pExtent->cGTEntries;
|
---|
4571 | uLastGDEntry = pExtent->uLastGrainAccess / pExtent->cGTEntries;
|
---|
4572 | if (uGrain < pExtent->uLastGrainAccess)
|
---|
4573 | return VERR_VD_VMDK_INVALID_WRITE;
|
---|
4574 |
|
---|
4575 | /* Zero byte write optimization. Since we don't tell VBoxHDD that we need
|
---|
4576 | * to allocate something, we also need to detect the situation ourself. */
|
---|
4577 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_HONOR_ZEROES)
|
---|
4578 | && vdIfIoIntIoCtxIsZero(pImage->pIfIo, pIoCtx, cbWrite, true /* fAdvance */))
|
---|
4579 | return VINF_SUCCESS;
|
---|
4580 |
|
---|
4581 | if (uGDEntry != uLastGDEntry)
|
---|
4582 | {
|
---|
4583 | rc = vmdkStreamFlushGT(pImage, pExtent, uLastGDEntry);
|
---|
4584 | if (RT_FAILURE(rc))
|
---|
4585 | return rc;
|
---|
4586 | vmdkStreamClearGT(pImage, pExtent);
|
---|
4587 | for (uint32_t i = uLastGDEntry + 1; i < uGDEntry; i++)
|
---|
4588 | {
|
---|
4589 | rc = vmdkStreamFlushGT(pImage, pExtent, i);
|
---|
4590 | if (RT_FAILURE(rc))
|
---|
4591 | return rc;
|
---|
4592 | }
|
---|
4593 | }
|
---|
4594 |
|
---|
4595 | uint64_t uFileOffset;
|
---|
4596 | uFileOffset = pExtent->uAppendPosition;
|
---|
4597 | if (!uFileOffset)
|
---|
4598 | return VERR_INTERNAL_ERROR;
|
---|
4599 | /* Align to sector, as the previous write could have been any size. */
|
---|
4600 | uFileOffset = RT_ALIGN_64(uFileOffset, 512);
|
---|
4601 |
|
---|
4602 | /* Paranoia check: extent type, grain table buffer presence and
|
---|
4603 | * grain table buffer space. Also grain table entry must be clear. */
|
---|
4604 | if ( pExtent->enmType != VMDKETYPE_HOSTED_SPARSE
|
---|
4605 | || !pImage->pGTCache
|
---|
4606 | || pExtent->cGTEntries > VMDK_GT_CACHE_SIZE * VMDK_GT_CACHELINE_SIZE
|
---|
4607 | || pImage->pGTCache->aGTCache[uCacheLine].aGTData[uCacheEntry])
|
---|
4608 | return VERR_INTERNAL_ERROR;
|
---|
4609 |
|
---|
4610 | /* Update grain table entry. */
|
---|
4611 | pImage->pGTCache->aGTCache[uCacheLine].aGTData[uCacheEntry] = VMDK_BYTE2SECTOR(uFileOffset);
|
---|
4612 |
|
---|
4613 | if (cbWrite != VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain))
|
---|
4614 | {
|
---|
4615 | vdIfIoIntIoCtxCopyFrom(pImage->pIfIo, pIoCtx, pExtent->pvGrain, cbWrite);
|
---|
4616 | memset((char *)pExtent->pvGrain + cbWrite, '\0',
|
---|
4617 | VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain) - cbWrite);
|
---|
4618 | pData = pExtent->pvGrain;
|
---|
4619 | }
|
---|
4620 | else
|
---|
4621 | {
|
---|
4622 | RTSGSEG Segment;
|
---|
4623 | unsigned cSegments = 1;
|
---|
4624 | size_t cbSeg = 0;
|
---|
4625 |
|
---|
4626 | cbSeg = vdIfIoIntIoCtxSegArrayCreate(pImage->pIfIo, pIoCtx, &Segment,
|
---|
4627 | &cSegments, VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
4628 | Assert(cbSeg == VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
4629 | pData = Segment.pvSeg;
|
---|
4630 | }
|
---|
4631 | rc = vmdkFileDeflateSync(pImage, pExtent, uFileOffset, pData,
|
---|
4632 | VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain),
|
---|
4633 | uSector, &cbGrain);
|
---|
4634 | if (RT_FAILURE(rc))
|
---|
4635 | {
|
---|
4636 | pExtent->uGrainSectorAbs = 0;
|
---|
4637 | AssertRC(rc);
|
---|
4638 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write compressed data block in '%s'"), pExtent->pszFullname);
|
---|
4639 | }
|
---|
4640 | pExtent->uLastGrainAccess = uGrain;
|
---|
4641 | pExtent->uAppendPosition += cbGrain;
|
---|
4642 |
|
---|
4643 | return rc;
|
---|
4644 | }
|
---|
4645 |
|
---|
4646 | /**
|
---|
4647 | * Internal: Updates the grain table during grain allocation.
|
---|
4648 | */
|
---|
4649 | static int vmdkAllocGrainGTUpdate(PVMDKIMAGE pImage, PVMDKEXTENT pExtent, PVDIOCTX pIoCtx,
|
---|
4650 | PVMDKGRAINALLOCASYNC pGrainAlloc)
|
---|
4651 | {
|
---|
4652 | int rc = VINF_SUCCESS;
|
---|
4653 | PVMDKGTCACHE pCache = pImage->pGTCache;
|
---|
4654 | uint32_t aGTDataTmp[VMDK_GT_CACHELINE_SIZE];
|
---|
4655 | uint32_t uGTHash, uGTBlockIndex;
|
---|
4656 | uint64_t uGTSector, uRGTSector, uGTBlock;
|
---|
4657 | uint64_t uSector = pGrainAlloc->uSector;
|
---|
4658 | PVMDKGTCACHEENTRY pGTCacheEntry;
|
---|
4659 |
|
---|
4660 | LogFlowFunc(("pImage=%#p pExtent=%#p pCache=%#p pIoCtx=%#p pGrainAlloc=%#p\n",
|
---|
4661 | pImage, pExtent, pCache, pIoCtx, pGrainAlloc));
|
---|
4662 |
|
---|
4663 | uGTSector = pGrainAlloc->uGTSector;
|
---|
4664 | uRGTSector = pGrainAlloc->uRGTSector;
|
---|
4665 | LogFlow(("uGTSector=%llu uRGTSector=%llu\n", uGTSector, uRGTSector));
|
---|
4666 |
|
---|
4667 | /* Update the grain table (and the cache). */
|
---|
4668 | uGTBlock = uSector / (pExtent->cSectorsPerGrain * VMDK_GT_CACHELINE_SIZE);
|
---|
4669 | uGTHash = vmdkGTCacheHash(pCache, uGTBlock, pExtent->uExtent);
|
---|
4670 | pGTCacheEntry = &pCache->aGTCache[uGTHash];
|
---|
4671 | if ( pGTCacheEntry->uExtent != pExtent->uExtent
|
---|
4672 | || pGTCacheEntry->uGTBlock != uGTBlock)
|
---|
4673 | {
|
---|
4674 | /* Cache miss, fetch data from disk. */
|
---|
4675 | LogFlow(("Cache miss, fetch data from disk\n"));
|
---|
4676 | PVDMETAXFER pMetaXfer = NULL;
|
---|
4677 | rc = vdIfIoIntFileReadMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4678 | VMDK_SECTOR2BYTE(uGTSector) + (uGTBlock % (pExtent->cGTEntries / VMDK_GT_CACHELINE_SIZE)) * sizeof(aGTDataTmp),
|
---|
4679 | aGTDataTmp, sizeof(aGTDataTmp), pIoCtx,
|
---|
4680 | &pMetaXfer, vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4681 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4682 | {
|
---|
4683 | pGrainAlloc->cIoXfersPending++;
|
---|
4684 | pGrainAlloc->fGTUpdateNeeded = true;
|
---|
4685 | /* Leave early, we will be called again after the read completed. */
|
---|
4686 | LogFlowFunc(("Metadata read in progress, leaving\n"));
|
---|
4687 | return rc;
|
---|
4688 | }
|
---|
4689 | else if (RT_FAILURE(rc))
|
---|
4690 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot read allocated grain table entry in '%s'"), pExtent->pszFullname);
|
---|
4691 | vdIfIoIntMetaXferRelease(pImage->pIfIo, pMetaXfer);
|
---|
4692 | pGTCacheEntry->uExtent = pExtent->uExtent;
|
---|
4693 | pGTCacheEntry->uGTBlock = uGTBlock;
|
---|
4694 | for (unsigned i = 0; i < VMDK_GT_CACHELINE_SIZE; i++)
|
---|
4695 | pGTCacheEntry->aGTData[i] = RT_LE2H_U32(aGTDataTmp[i]);
|
---|
4696 | }
|
---|
4697 | else
|
---|
4698 | {
|
---|
4699 | /* Cache hit. Convert grain table block back to disk format, otherwise
|
---|
4700 | * the code below will write garbage for all but the updated entry. */
|
---|
4701 | for (unsigned i = 0; i < VMDK_GT_CACHELINE_SIZE; i++)
|
---|
4702 | aGTDataTmp[i] = RT_H2LE_U32(pGTCacheEntry->aGTData[i]);
|
---|
4703 | }
|
---|
4704 | pGrainAlloc->fGTUpdateNeeded = false;
|
---|
4705 | uGTBlockIndex = (uSector / pExtent->cSectorsPerGrain) % VMDK_GT_CACHELINE_SIZE;
|
---|
4706 | aGTDataTmp[uGTBlockIndex] = RT_H2LE_U32(VMDK_BYTE2SECTOR(pGrainAlloc->uGrainOffset));
|
---|
4707 | pGTCacheEntry->aGTData[uGTBlockIndex] = VMDK_BYTE2SECTOR(pGrainAlloc->uGrainOffset);
|
---|
4708 | /* Update grain table on disk. */
|
---|
4709 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4710 | VMDK_SECTOR2BYTE(uGTSector) + (uGTBlock % (pExtent->cGTEntries / VMDK_GT_CACHELINE_SIZE)) * sizeof(aGTDataTmp),
|
---|
4711 | aGTDataTmp, sizeof(aGTDataTmp), pIoCtx,
|
---|
4712 | vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4713 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4714 | pGrainAlloc->cIoXfersPending++;
|
---|
4715 | else if (RT_FAILURE(rc))
|
---|
4716 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write updated grain table in '%s'"), pExtent->pszFullname);
|
---|
4717 | if (pExtent->pRGD)
|
---|
4718 | {
|
---|
4719 | /* Update backup grain table on disk. */
|
---|
4720 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4721 | VMDK_SECTOR2BYTE(uRGTSector) + (uGTBlock % (pExtent->cGTEntries / VMDK_GT_CACHELINE_SIZE)) * sizeof(aGTDataTmp),
|
---|
4722 | aGTDataTmp, sizeof(aGTDataTmp), pIoCtx,
|
---|
4723 | vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4724 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4725 | pGrainAlloc->cIoXfersPending++;
|
---|
4726 | else if (RT_FAILURE(rc))
|
---|
4727 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write updated backup grain table in '%s'"), pExtent->pszFullname);
|
---|
4728 | }
|
---|
4729 |
|
---|
4730 | LogFlowFunc(("leaving rc=%Rrc\n", rc));
|
---|
4731 | return rc;
|
---|
4732 | }
|
---|
4733 |
|
---|
4734 | /**
|
---|
4735 | * Internal - complete the grain allocation by updating disk grain table if required.
|
---|
4736 | */
|
---|
4737 | static int vmdkAllocGrainComplete(void *pBackendData, PVDIOCTX pIoCtx, void *pvUser, int rcReq)
|
---|
4738 | {
|
---|
4739 | RT_NOREF1(rcReq);
|
---|
4740 | int rc = VINF_SUCCESS;
|
---|
4741 | PVMDKIMAGE pImage = (PVMDKIMAGE)pBackendData;
|
---|
4742 | PVMDKGRAINALLOCASYNC pGrainAlloc = (PVMDKGRAINALLOCASYNC)pvUser;
|
---|
4743 |
|
---|
4744 | LogFlowFunc(("pBackendData=%#p pIoCtx=%#p pvUser=%#p rcReq=%Rrc\n",
|
---|
4745 | pBackendData, pIoCtx, pvUser, rcReq));
|
---|
4746 |
|
---|
4747 | pGrainAlloc->cIoXfersPending--;
|
---|
4748 | if (!pGrainAlloc->cIoXfersPending && pGrainAlloc->fGTUpdateNeeded)
|
---|
4749 | rc = vmdkAllocGrainGTUpdate(pImage, pGrainAlloc->pExtent, pIoCtx, pGrainAlloc);
|
---|
4750 |
|
---|
4751 | if (!pGrainAlloc->cIoXfersPending)
|
---|
4752 | {
|
---|
4753 | /* Grain allocation completed. */
|
---|
4754 | RTMemFree(pGrainAlloc);
|
---|
4755 | }
|
---|
4756 |
|
---|
4757 | LogFlowFunc(("Leaving rc=%Rrc\n", rc));
|
---|
4758 | return rc;
|
---|
4759 | }
|
---|
4760 |
|
---|
4761 | /**
|
---|
4762 | * Internal. Allocates a new grain table (if necessary).
|
---|
4763 | */
|
---|
4764 | static int vmdkAllocGrain(PVMDKIMAGE pImage, PVMDKEXTENT pExtent, PVDIOCTX pIoCtx,
|
---|
4765 | uint64_t uSector, uint64_t cbWrite)
|
---|
4766 | {
|
---|
4767 | PVMDKGTCACHE pCache = pImage->pGTCache; NOREF(pCache);
|
---|
4768 | uint64_t uGDIndex, uGTSector, uRGTSector;
|
---|
4769 | uint64_t uFileOffset;
|
---|
4770 | PVMDKGRAINALLOCASYNC pGrainAlloc = NULL;
|
---|
4771 | int rc;
|
---|
4772 |
|
---|
4773 | LogFlowFunc(("pCache=%#p pExtent=%#p pIoCtx=%#p uSector=%llu cbWrite=%llu\n",
|
---|
4774 | pCache, pExtent, pIoCtx, uSector, cbWrite));
|
---|
4775 |
|
---|
4776 | pGrainAlloc = (PVMDKGRAINALLOCASYNC)RTMemAllocZ(sizeof(VMDKGRAINALLOCASYNC));
|
---|
4777 | if (!pGrainAlloc)
|
---|
4778 | return VERR_NO_MEMORY;
|
---|
4779 |
|
---|
4780 | pGrainAlloc->pExtent = pExtent;
|
---|
4781 | pGrainAlloc->uSector = uSector;
|
---|
4782 |
|
---|
4783 | uGDIndex = uSector / pExtent->cSectorsPerGDE;
|
---|
4784 | if (uGDIndex >= pExtent->cGDEntries)
|
---|
4785 | {
|
---|
4786 | RTMemFree(pGrainAlloc);
|
---|
4787 | return VERR_OUT_OF_RANGE;
|
---|
4788 | }
|
---|
4789 | uGTSector = pExtent->pGD[uGDIndex];
|
---|
4790 | if (pExtent->pRGD)
|
---|
4791 | uRGTSector = pExtent->pRGD[uGDIndex];
|
---|
4792 | else
|
---|
4793 | uRGTSector = 0; /**< avoid compiler warning */
|
---|
4794 | if (!uGTSector)
|
---|
4795 | {
|
---|
4796 | LogFlow(("Allocating new grain table\n"));
|
---|
4797 |
|
---|
4798 | /* There is no grain table referenced by this grain directory
|
---|
4799 | * entry. So there is absolutely no data in this area. Allocate
|
---|
4800 | * a new grain table and put the reference to it in the GDs. */
|
---|
4801 | uFileOffset = pExtent->uAppendPosition;
|
---|
4802 | if (!uFileOffset)
|
---|
4803 | {
|
---|
4804 | RTMemFree(pGrainAlloc);
|
---|
4805 | return VERR_INTERNAL_ERROR;
|
---|
4806 | }
|
---|
4807 | Assert(!(uFileOffset % 512));
|
---|
4808 |
|
---|
4809 | uFileOffset = RT_ALIGN_64(uFileOffset, 512);
|
---|
4810 | uGTSector = VMDK_BYTE2SECTOR(uFileOffset);
|
---|
4811 |
|
---|
4812 | /* Normally the grain table is preallocated for hosted sparse extents
|
---|
4813 | * that support more than 32 bit sector numbers. So this shouldn't
|
---|
4814 | * ever happen on a valid extent. */
|
---|
4815 | if (uGTSector > UINT32_MAX)
|
---|
4816 | {
|
---|
4817 | RTMemFree(pGrainAlloc);
|
---|
4818 | return VERR_VD_VMDK_INVALID_HEADER;
|
---|
4819 | }
|
---|
4820 |
|
---|
4821 | /* Write grain table by writing the required number of grain table
|
---|
4822 | * cache chunks. Allocate memory dynamically here or we flood the
|
---|
4823 | * metadata cache with very small entries. */
|
---|
4824 | size_t cbGTDataTmp = pExtent->cGTEntries * sizeof(uint32_t);
|
---|
4825 | uint32_t *paGTDataTmp = (uint32_t *)RTMemTmpAllocZ(cbGTDataTmp);
|
---|
4826 |
|
---|
4827 | if (!paGTDataTmp)
|
---|
4828 | {
|
---|
4829 | RTMemFree(pGrainAlloc);
|
---|
4830 | return VERR_NO_MEMORY;
|
---|
4831 | }
|
---|
4832 |
|
---|
4833 | memset(paGTDataTmp, '\0', cbGTDataTmp);
|
---|
4834 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4835 | VMDK_SECTOR2BYTE(uGTSector),
|
---|
4836 | paGTDataTmp, cbGTDataTmp, pIoCtx,
|
---|
4837 | vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4838 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4839 | pGrainAlloc->cIoXfersPending++;
|
---|
4840 | else if (RT_FAILURE(rc))
|
---|
4841 | {
|
---|
4842 | RTMemTmpFree(paGTDataTmp);
|
---|
4843 | RTMemFree(pGrainAlloc);
|
---|
4844 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write grain table allocation in '%s'"), pExtent->pszFullname);
|
---|
4845 | }
|
---|
4846 | pExtent->uAppendPosition = RT_ALIGN_64( pExtent->uAppendPosition
|
---|
4847 | + cbGTDataTmp, 512);
|
---|
4848 |
|
---|
4849 | if (pExtent->pRGD)
|
---|
4850 | {
|
---|
4851 | AssertReturn(!uRGTSector, VERR_VD_VMDK_INVALID_HEADER);
|
---|
4852 | uFileOffset = pExtent->uAppendPosition;
|
---|
4853 | if (!uFileOffset)
|
---|
4854 | return VERR_INTERNAL_ERROR;
|
---|
4855 | Assert(!(uFileOffset % 512));
|
---|
4856 | uRGTSector = VMDK_BYTE2SECTOR(uFileOffset);
|
---|
4857 |
|
---|
4858 | /* Normally the redundant grain table is preallocated for hosted
|
---|
4859 | * sparse extents that support more than 32 bit sector numbers. So
|
---|
4860 | * this shouldn't ever happen on a valid extent. */
|
---|
4861 | if (uRGTSector > UINT32_MAX)
|
---|
4862 | {
|
---|
4863 | RTMemTmpFree(paGTDataTmp);
|
---|
4864 | return VERR_VD_VMDK_INVALID_HEADER;
|
---|
4865 | }
|
---|
4866 |
|
---|
4867 | /* Write grain table by writing the required number of grain table
|
---|
4868 | * cache chunks. Allocate memory dynamically here or we flood the
|
---|
4869 | * metadata cache with very small entries. */
|
---|
4870 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4871 | VMDK_SECTOR2BYTE(uRGTSector),
|
---|
4872 | paGTDataTmp, cbGTDataTmp, pIoCtx,
|
---|
4873 | vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4874 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4875 | pGrainAlloc->cIoXfersPending++;
|
---|
4876 | else if (RT_FAILURE(rc))
|
---|
4877 | {
|
---|
4878 | RTMemTmpFree(paGTDataTmp);
|
---|
4879 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write backup grain table allocation in '%s'"), pExtent->pszFullname);
|
---|
4880 | }
|
---|
4881 |
|
---|
4882 | pExtent->uAppendPosition = pExtent->uAppendPosition + cbGTDataTmp;
|
---|
4883 | }
|
---|
4884 |
|
---|
4885 | RTMemTmpFree(paGTDataTmp);
|
---|
4886 |
|
---|
4887 | /* Update the grain directory on disk (doing it before writing the
|
---|
4888 | * grain table will result in a garbled extent if the operation is
|
---|
4889 | * aborted for some reason. Otherwise the worst that can happen is
|
---|
4890 | * some unused sectors in the extent. */
|
---|
4891 | uint32_t uGTSectorLE = RT_H2LE_U64(uGTSector);
|
---|
4892 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4893 | VMDK_SECTOR2BYTE(pExtent->uSectorGD) + uGDIndex * sizeof(uGTSectorLE),
|
---|
4894 | &uGTSectorLE, sizeof(uGTSectorLE), pIoCtx,
|
---|
4895 | vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4896 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4897 | pGrainAlloc->cIoXfersPending++;
|
---|
4898 | else if (RT_FAILURE(rc))
|
---|
4899 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write grain directory entry in '%s'"), pExtent->pszFullname);
|
---|
4900 | if (pExtent->pRGD)
|
---|
4901 | {
|
---|
4902 | uint32_t uRGTSectorLE = RT_H2LE_U64(uRGTSector);
|
---|
4903 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
4904 | VMDK_SECTOR2BYTE(pExtent->uSectorRGD) + uGDIndex * sizeof(uGTSectorLE),
|
---|
4905 | &uRGTSectorLE, sizeof(uRGTSectorLE), pIoCtx,
|
---|
4906 | vmdkAllocGrainComplete, pGrainAlloc);
|
---|
4907 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
4908 | pGrainAlloc->cIoXfersPending++;
|
---|
4909 | else if (RT_FAILURE(rc))
|
---|
4910 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write backup grain directory entry in '%s'"), pExtent->pszFullname);
|
---|
4911 | }
|
---|
4912 |
|
---|
4913 | /* As the final step update the in-memory copy of the GDs. */
|
---|
4914 | pExtent->pGD[uGDIndex] = uGTSector;
|
---|
4915 | if (pExtent->pRGD)
|
---|
4916 | pExtent->pRGD[uGDIndex] = uRGTSector;
|
---|
4917 | }
|
---|
4918 |
|
---|
4919 | LogFlow(("uGTSector=%llu uRGTSector=%llu\n", uGTSector, uRGTSector));
|
---|
4920 | pGrainAlloc->uGTSector = uGTSector;
|
---|
4921 | pGrainAlloc->uRGTSector = uRGTSector;
|
---|
4922 |
|
---|
4923 | uFileOffset = pExtent->uAppendPosition;
|
---|
4924 | if (!uFileOffset)
|
---|
4925 | return VERR_INTERNAL_ERROR;
|
---|
4926 | Assert(!(uFileOffset % 512));
|
---|
4927 |
|
---|
4928 | pGrainAlloc->uGrainOffset = uFileOffset;
|
---|
4929 |
|
---|
4930 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
4931 | {
|
---|
4932 | AssertMsgReturn(vdIfIoIntIoCtxIsSynchronous(pImage->pIfIo, pIoCtx),
|
---|
4933 | ("Accesses to stream optimized images must be synchronous\n"),
|
---|
4934 | VERR_INVALID_STATE);
|
---|
4935 |
|
---|
4936 | if (cbWrite != VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain))
|
---|
4937 | return vdIfError(pImage->pIfError, VERR_INTERNAL_ERROR, RT_SRC_POS, N_("VMDK: not enough data for a compressed data block in '%s'"), pExtent->pszFullname);
|
---|
|