1 | /* $Id: VMDK.cpp 99963 2023-05-24 23:27:54Z 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) 2006-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 |
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29 | /*********************************************************************************************************************************
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30 | * Header Files *
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31 | *********************************************************************************************************************************/
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32 | #define LOG_GROUP LOG_GROUP_VD_VMDK
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33 | #include <VBox/log.h> /* before VBox/vd-ifs.h */
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34 | #include <VBox/vd-plugin.h>
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35 | #include <VBox/err.h>
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36 |
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37 | #include <iprt/assert.h>
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38 | #include <iprt/alloc.h>
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39 | #include <iprt/base64.h>
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40 | #include <iprt/ctype.h>
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41 | #include <iprt/crc.h>
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42 | #include <iprt/dvm.h>
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43 | #include <iprt/uuid.h>
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44 | #include <iprt/path.h>
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45 | #include <iprt/rand.h>
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46 | #include <iprt/sg.h>
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47 | #include <iprt/sort.h>
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48 | #include <iprt/string.h>
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49 | #include <iprt/zip.h>
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50 | #include <iprt/asm.h>
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51 | #ifdef RT_OS_WINDOWS
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52 | # include <iprt/utf16.h>
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53 | # include <iprt/uni.h>
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54 | # include <iprt/uni.h>
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55 | # include <iprt/nt/nt-and-windows.h>
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56 | # include <winioctl.h>
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57 | #endif
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58 | #ifdef RT_OS_LINUX
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59 | # include <errno.h>
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60 | # include <sys/stat.h>
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61 | # include <iprt/dir.h>
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62 | # include <iprt/symlink.h>
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63 | # include <iprt/linux/sysfs.h>
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64 | #endif
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65 | #ifdef RT_OS_FREEBSD
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66 | #include <libgeom.h>
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67 | #include <sys/stat.h>
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68 | #include <stdlib.h>
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69 | #endif
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70 | #ifdef RT_OS_SOLARIS
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71 | #include <sys/dkio.h>
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72 | #include <sys/vtoc.h>
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73 | #include <sys/efi_partition.h>
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74 | #include <unistd.h>
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75 | #include <errno.h>
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76 | #endif
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77 | #ifdef RT_OS_DARWIN
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78 | # include <sys/stat.h>
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79 | # include <sys/disk.h>
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80 | # include <errno.h>
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81 | /* The following structure and IOCTLs are defined in znu bsd/sys/disk.h but
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82 | inside KERNEL ifdefs and thus stripped from the SDK edition of the header.
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83 | While we could try include the header from the Kernel.framework, it's a lot
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84 | easier to just add the structure and 4 defines here. */
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85 | typedef struct
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86 | {
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87 | uint64_t offset;
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88 | uint64_t length;
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89 | uint8_t reserved0128[12];
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90 | dev_t dev;
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91 | } dk_physical_extent_t;
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92 | # define DKIOCGETBASE _IOR( 'd', 73, uint64_t)
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93 | # define DKIOCLOCKPHYSICALEXTENTS _IO( 'd', 81)
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94 | # define DKIOCGETPHYSICALEXTENT _IOWR('d', 82, dk_physical_extent_t)
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95 | # define DKIOCUNLOCKPHYSICALEXTENTS _IO( 'd', 83)
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96 | #endif /* RT_OS_DARWIN */
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97 |
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98 | #include "VDBackends.h"
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99 |
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100 |
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101 | /*********************************************************************************************************************************
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102 | * Constants And Macros, Structures and Typedefs *
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103 | *********************************************************************************************************************************/
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104 |
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105 | /** Maximum encoded string size (including NUL) we allow for VMDK images.
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106 | * Deliberately not set high to avoid running out of descriptor space. */
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107 | #define VMDK_ENCODED_COMMENT_MAX 1024
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108 |
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109 | /** VMDK descriptor DDB entry for PCHS cylinders. */
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110 | #define VMDK_DDB_GEO_PCHS_CYLINDERS "ddb.geometry.cylinders"
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111 |
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112 | /** VMDK descriptor DDB entry for PCHS heads. */
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113 | #define VMDK_DDB_GEO_PCHS_HEADS "ddb.geometry.heads"
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114 |
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115 | /** VMDK descriptor DDB entry for PCHS sectors. */
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116 | #define VMDK_DDB_GEO_PCHS_SECTORS "ddb.geometry.sectors"
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117 |
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118 | /** VMDK descriptor DDB entry for LCHS cylinders. */
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119 | #define VMDK_DDB_GEO_LCHS_CYLINDERS "ddb.geometry.biosCylinders"
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120 |
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121 | /** VMDK descriptor DDB entry for LCHS heads. */
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122 | #define VMDK_DDB_GEO_LCHS_HEADS "ddb.geometry.biosHeads"
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123 |
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124 | /** VMDK descriptor DDB entry for LCHS sectors. */
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125 | #define VMDK_DDB_GEO_LCHS_SECTORS "ddb.geometry.biosSectors"
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126 |
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127 | /** VMDK descriptor DDB entry for image UUID. */
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128 | #define VMDK_DDB_IMAGE_UUID "ddb.uuid.image"
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129 |
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130 | /** VMDK descriptor DDB entry for image modification UUID. */
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131 | #define VMDK_DDB_MODIFICATION_UUID "ddb.uuid.modification"
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132 |
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133 | /** VMDK descriptor DDB entry for parent image UUID. */
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134 | #define VMDK_DDB_PARENT_UUID "ddb.uuid.parent"
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135 |
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136 | /** VMDK descriptor DDB entry for parent image modification UUID. */
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137 | #define VMDK_DDB_PARENT_MODIFICATION_UUID "ddb.uuid.parentmodification"
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138 |
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139 | /** No compression for streamOptimized files. */
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140 | #define VMDK_COMPRESSION_NONE 0
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141 |
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142 | /** Deflate compression for streamOptimized files. */
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143 | #define VMDK_COMPRESSION_DEFLATE 1
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144 |
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145 | /** Marker that the actual GD value is stored in the footer. */
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146 | #define VMDK_GD_AT_END 0xffffffffffffffffULL
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147 |
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148 | /** Marker for end-of-stream in streamOptimized images. */
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149 | #define VMDK_MARKER_EOS 0
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150 |
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151 | /** Marker for grain table block in streamOptimized images. */
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152 | #define VMDK_MARKER_GT 1
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153 |
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154 | /** Marker for grain directory block in streamOptimized images. */
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155 | #define VMDK_MARKER_GD 2
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156 |
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157 | /** Marker for footer in streamOptimized images. */
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158 | #define VMDK_MARKER_FOOTER 3
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159 |
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160 | /** Marker for unknown purpose in streamOptimized images.
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161 | * Shows up in very recent images created by vSphere, but only sporadically.
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162 | * They "forgot" to document that one in the VMDK specification. */
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163 | #define VMDK_MARKER_UNSPECIFIED 4
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164 |
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165 | /** Dummy marker for "don't check the marker value". */
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166 | #define VMDK_MARKER_IGNORE 0xffffffffU
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167 |
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168 | /**
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169 | * Magic number for hosted images created by VMware Workstation 4, VMware
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170 | * Workstation 5, VMware Server or VMware Player. Not necessarily sparse.
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171 | */
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172 | #define VMDK_SPARSE_MAGICNUMBER 0x564d444b /* 'V' 'M' 'D' 'K' */
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173 |
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174 | /** VMDK sector size in bytes. */
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175 | #define VMDK_SECTOR_SIZE 512
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176 | /** Max string buffer size for uint64_t with null term */
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177 | #define UINT64_MAX_BUFF_SIZE 21
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178 | /** Grain directory entry size in bytes */
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179 | #define VMDK_GRAIN_DIR_ENTRY_SIZE 4
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180 | /** Grain table size in bytes */
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181 | #define VMDK_GRAIN_TABLE_SIZE 2048
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182 |
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183 | /**
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184 | * VMDK hosted binary extent header. The "Sparse" is a total misnomer, as
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185 | * this header is also used for monolithic flat images.
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186 | */
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187 | #pragma pack(1)
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188 | typedef struct SparseExtentHeader
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189 | {
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190 | uint32_t magicNumber;
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191 | uint32_t version;
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192 | uint32_t flags;
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193 | uint64_t capacity;
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194 | uint64_t grainSize;
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195 | uint64_t descriptorOffset;
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196 | uint64_t descriptorSize;
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197 | uint32_t numGTEsPerGT;
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198 | uint64_t rgdOffset;
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199 | uint64_t gdOffset;
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200 | uint64_t overHead;
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201 | bool uncleanShutdown;
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202 | char singleEndLineChar;
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203 | char nonEndLineChar;
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204 | char doubleEndLineChar1;
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205 | char doubleEndLineChar2;
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206 | uint16_t compressAlgorithm;
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207 | uint8_t pad[433];
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208 | } SparseExtentHeader;
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209 | #pragma pack()
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210 |
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211 | /** The maximum allowed descriptor size in the extent header in sectors. */
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212 | #define VMDK_SPARSE_DESCRIPTOR_SIZE_MAX UINT64_C(20480) /* 10MB */
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213 |
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214 | /** VMDK capacity for a single chunk when 2G splitting is turned on. Should be
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215 | * divisible by the default grain size (64K) */
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216 | #define VMDK_2G_SPLIT_SIZE (2047 * 1024 * 1024)
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217 |
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218 | /** VMDK streamOptimized file format marker. The type field may or may not
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219 | * be actually valid, but there's always data to read there. */
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220 | #pragma pack(1)
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221 | typedef struct VMDKMARKER
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222 | {
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223 | uint64_t uSector;
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224 | uint32_t cbSize;
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225 | uint32_t uType;
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226 | } VMDKMARKER, *PVMDKMARKER;
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227 | #pragma pack()
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228 |
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229 |
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230 | /** Convert sector number/size to byte offset/size. */
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231 | #define VMDK_SECTOR2BYTE(u) ((uint64_t)(u) << 9)
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232 |
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233 | /** Convert byte offset/size to sector number/size. */
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234 | #define VMDK_BYTE2SECTOR(u) ((u) >> 9)
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235 |
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236 | /**
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237 | * VMDK extent type.
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238 | */
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239 | typedef enum VMDKETYPE
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240 | {
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241 | /** Hosted sparse extent. */
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242 | VMDKETYPE_HOSTED_SPARSE = 1,
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243 | /** Flat extent. */
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244 | VMDKETYPE_FLAT,
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245 | /** Zero extent. */
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246 | VMDKETYPE_ZERO,
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247 | /** VMFS extent, used by ESX. */
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248 | VMDKETYPE_VMFS
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249 | } VMDKETYPE, *PVMDKETYPE;
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250 |
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251 | /**
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252 | * VMDK access type for a extent.
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253 | */
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254 | typedef enum VMDKACCESS
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255 | {
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256 | /** No access allowed. */
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257 | VMDKACCESS_NOACCESS = 0,
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258 | /** Read-only access. */
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259 | VMDKACCESS_READONLY,
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260 | /** Read-write access. */
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261 | VMDKACCESS_READWRITE
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262 | } VMDKACCESS, *PVMDKACCESS;
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263 |
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264 | /** Forward declaration for PVMDKIMAGE. */
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265 | typedef struct VMDKIMAGE *PVMDKIMAGE;
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266 |
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267 | /**
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268 | * Extents files entry. Used for opening a particular file only once.
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269 | */
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270 | typedef struct VMDKFILE
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271 | {
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272 | /** Pointer to file path. Local copy. */
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273 | const char *pszFilename;
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274 | /** Pointer to base name. Local copy. */
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275 | const char *pszBasename;
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276 | /** File open flags for consistency checking. */
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277 | unsigned fOpen;
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278 | /** Handle for sync/async file abstraction.*/
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279 | PVDIOSTORAGE pStorage;
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280 | /** Reference counter. */
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281 | unsigned uReferences;
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282 | /** Flag whether the file should be deleted on last close. */
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283 | bool fDelete;
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284 | /** Pointer to the image we belong to (for debugging purposes). */
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285 | PVMDKIMAGE pImage;
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286 | /** Pointer to next file descriptor. */
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287 | struct VMDKFILE *pNext;
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288 | /** Pointer to the previous file descriptor. */
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289 | struct VMDKFILE *pPrev;
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290 | } VMDKFILE, *PVMDKFILE;
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291 |
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292 | /**
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293 | * VMDK extent data structure.
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294 | */
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295 | typedef struct VMDKEXTENT
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296 | {
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297 | /** File handle. */
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298 | PVMDKFILE pFile;
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299 | /** Base name of the image extent. */
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300 | const char *pszBasename;
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301 | /** Full name of the image extent. */
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302 | const char *pszFullname;
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303 | /** Number of sectors in this extent. */
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304 | uint64_t cSectors;
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305 | /** Number of sectors per block (grain in VMDK speak). */
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306 | uint64_t cSectorsPerGrain;
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307 | /** Starting sector number of descriptor. */
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308 | uint64_t uDescriptorSector;
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309 | /** Size of descriptor in sectors. */
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310 | uint64_t cDescriptorSectors;
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311 | /** Starting sector number of grain directory. */
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312 | uint64_t uSectorGD;
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313 | /** Starting sector number of redundant grain directory. */
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314 | uint64_t uSectorRGD;
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315 | /** Total number of metadata sectors. */
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316 | uint64_t cOverheadSectors;
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317 | /** Nominal size (i.e. as described by the descriptor) of this extent. */
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318 | uint64_t cNominalSectors;
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319 | /** Sector offset (i.e. as described by the descriptor) of this extent. */
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320 | uint64_t uSectorOffset;
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321 | /** Number of entries in a grain table. */
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322 | uint32_t cGTEntries;
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323 | /** Number of sectors reachable via a grain directory entry. */
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324 | uint32_t cSectorsPerGDE;
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325 | /** Number of entries in the grain directory. */
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326 | uint32_t cGDEntries;
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327 | /** Pointer to the next free sector. Legacy information. Do not use. */
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328 | uint32_t uFreeSector;
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329 | /** Number of this extent in the list of images. */
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330 | uint32_t uExtent;
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331 | /** Pointer to the descriptor (NULL if no descriptor in this extent). */
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332 | char *pDescData;
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333 | /** Pointer to the grain directory. */
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334 | uint32_t *pGD;
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335 | /** Pointer to the redundant grain directory. */
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336 | uint32_t *pRGD;
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337 | /** VMDK version of this extent. 1=1.0/1.1 */
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338 | uint32_t uVersion;
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339 | /** Type of this extent. */
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340 | VMDKETYPE enmType;
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341 | /** Access to this extent. */
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342 | VMDKACCESS enmAccess;
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343 | /** Flag whether this extent is marked as unclean. */
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344 | bool fUncleanShutdown;
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345 | /** Flag whether the metadata in the extent header needs to be updated. */
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346 | bool fMetaDirty;
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347 | /** Flag whether there is a footer in this extent. */
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348 | bool fFooter;
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349 | /** Compression type for this extent. */
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350 | uint16_t uCompression;
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351 | /** Append position for writing new grain. Only for sparse extents. */
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352 | uint64_t uAppendPosition;
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353 | /** Last grain which was accessed. Only for streamOptimized extents. */
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354 | uint32_t uLastGrainAccess;
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355 | /** Starting sector corresponding to the grain buffer. */
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356 | uint32_t uGrainSectorAbs;
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357 | /** Grain number corresponding to the grain buffer. */
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358 | uint32_t uGrain;
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359 | /** Actual size of the compressed data, only valid for reading. */
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360 | uint32_t cbGrainStreamRead;
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361 | /** Size of compressed grain buffer for streamOptimized extents. */
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362 | size_t cbCompGrain;
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363 | /** Compressed grain buffer for streamOptimized extents, with marker. */
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364 | void *pvCompGrain;
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365 | /** Decompressed grain buffer for streamOptimized extents. */
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366 | void *pvGrain;
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367 | /** Reference to the image in which this extent is used. Do not use this
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368 | * on a regular basis to avoid passing pImage references to functions
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369 | * explicitly. */
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370 | struct VMDKIMAGE *pImage;
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371 | } VMDKEXTENT, *PVMDKEXTENT;
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372 |
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373 | /**
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374 | * Grain table cache size. Allocated per image.
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375 | */
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376 | #define VMDK_GT_CACHE_SIZE 256
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377 |
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378 | /**
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379 | * Grain table block size. Smaller than an actual grain table block to allow
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380 | * more grain table blocks to be cached without having to allocate excessive
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381 | * amounts of memory for the cache.
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382 | */
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383 | #define VMDK_GT_CACHELINE_SIZE 128
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384 |
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385 |
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386 | /**
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387 | * Maximum number of lines in a descriptor file. Not worth the effort of
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388 | * making it variable. Descriptor files are generally very short (~20 lines),
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389 | * with the exception of sparse files split in 2G chunks, which need for the
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390 | * maximum size (almost 2T) exactly 1025 lines for the disk database.
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391 | */
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392 | #define VMDK_DESCRIPTOR_LINES_MAX 1100U
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393 |
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394 | /**
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395 | * Parsed descriptor information. Allows easy access and update of the
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396 | * descriptor (whether separate file or not). Free form text files suck.
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397 | */
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398 | typedef struct VMDKDESCRIPTOR
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399 | {
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400 | /** Line number of first entry of the disk descriptor. */
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401 | unsigned uFirstDesc;
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402 | /** Line number of first entry in the extent description. */
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403 | unsigned uFirstExtent;
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404 | /** Line number of first disk database entry. */
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405 | unsigned uFirstDDB;
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406 | /** Total number of lines. */
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407 | unsigned cLines;
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408 | /** Total amount of memory available for the descriptor. */
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409 | size_t cbDescAlloc;
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410 | /** Set if descriptor has been changed and not yet written to disk. */
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411 | bool fDirty;
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412 | /** Array of pointers to the data in the descriptor. */
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413 | char *aLines[VMDK_DESCRIPTOR_LINES_MAX];
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414 | /** Array of line indices pointing to the next non-comment line. */
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415 | unsigned aNextLines[VMDK_DESCRIPTOR_LINES_MAX];
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416 | } VMDKDESCRIPTOR, *PVMDKDESCRIPTOR;
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417 |
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418 |
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419 | /**
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420 | * Cache entry for translating extent/sector to a sector number in that
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421 | * extent.
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422 | */
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423 | typedef struct VMDKGTCACHEENTRY
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424 | {
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425 | /** Extent number for which this entry is valid. */
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426 | uint32_t uExtent;
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427 | /** GT data block number. */
|
---|
428 | uint64_t uGTBlock;
|
---|
429 | /** Data part of the cache entry. */
|
---|
430 | uint32_t aGTData[VMDK_GT_CACHELINE_SIZE];
|
---|
431 | } VMDKGTCACHEENTRY, *PVMDKGTCACHEENTRY;
|
---|
432 |
|
---|
433 | /**
|
---|
434 | * Cache data structure for blocks of grain table entries. For now this is a
|
---|
435 | * fixed size direct mapping cache, but this should be adapted to the size of
|
---|
436 | * the sparse image and maybe converted to a set-associative cache. The
|
---|
437 | * implementation below implements a write-through cache with write allocate.
|
---|
438 | */
|
---|
439 | typedef struct VMDKGTCACHE
|
---|
440 | {
|
---|
441 | /** Cache entries. */
|
---|
442 | VMDKGTCACHEENTRY aGTCache[VMDK_GT_CACHE_SIZE];
|
---|
443 | /** Number of cache entries (currently unused). */
|
---|
444 | unsigned cEntries;
|
---|
445 | } VMDKGTCACHE, *PVMDKGTCACHE;
|
---|
446 |
|
---|
447 | /**
|
---|
448 | * Complete VMDK image data structure. Mainly a collection of extents and a few
|
---|
449 | * extra global data fields.
|
---|
450 | */
|
---|
451 | typedef struct VMDKIMAGE
|
---|
452 | {
|
---|
453 | /** Image name. */
|
---|
454 | const char *pszFilename;
|
---|
455 | /** Descriptor file if applicable. */
|
---|
456 | PVMDKFILE pFile;
|
---|
457 |
|
---|
458 | /** Pointer to the per-disk VD interface list. */
|
---|
459 | PVDINTERFACE pVDIfsDisk;
|
---|
460 | /** Pointer to the per-image VD interface list. */
|
---|
461 | PVDINTERFACE pVDIfsImage;
|
---|
462 |
|
---|
463 | /** Error interface. */
|
---|
464 | PVDINTERFACEERROR pIfError;
|
---|
465 | /** I/O interface. */
|
---|
466 | PVDINTERFACEIOINT pIfIo;
|
---|
467 |
|
---|
468 |
|
---|
469 | /** Pointer to the image extents. */
|
---|
470 | PVMDKEXTENT pExtents;
|
---|
471 | /** Number of image extents. */
|
---|
472 | unsigned cExtents;
|
---|
473 | /** Pointer to the files list, for opening a file referenced multiple
|
---|
474 | * times only once (happens mainly with raw partition access). */
|
---|
475 | PVMDKFILE pFiles;
|
---|
476 |
|
---|
477 | /**
|
---|
478 | * Pointer to an array of segment entries for async I/O.
|
---|
479 | * This is an optimization because the task number to submit is not known
|
---|
480 | * and allocating/freeing an array in the read/write functions every time
|
---|
481 | * is too expensive.
|
---|
482 | */
|
---|
483 | PRTSGSEG paSegments;
|
---|
484 | /** Entries available in the segments array. */
|
---|
485 | unsigned cSegments;
|
---|
486 |
|
---|
487 | /** Open flags passed by VBoxHD layer. */
|
---|
488 | unsigned uOpenFlags;
|
---|
489 | /** Image flags defined during creation or determined during open. */
|
---|
490 | unsigned uImageFlags;
|
---|
491 | /** Total size of the image. */
|
---|
492 | uint64_t cbSize;
|
---|
493 | /** Physical geometry of this image. */
|
---|
494 | VDGEOMETRY PCHSGeometry;
|
---|
495 | /** Logical geometry of this image. */
|
---|
496 | VDGEOMETRY LCHSGeometry;
|
---|
497 | /** Image UUID. */
|
---|
498 | RTUUID ImageUuid;
|
---|
499 | /** Image modification UUID. */
|
---|
500 | RTUUID ModificationUuid;
|
---|
501 | /** Parent image UUID. */
|
---|
502 | RTUUID ParentUuid;
|
---|
503 | /** Parent image modification UUID. */
|
---|
504 | RTUUID ParentModificationUuid;
|
---|
505 |
|
---|
506 | /** Pointer to grain table cache, if this image contains sparse extents. */
|
---|
507 | PVMDKGTCACHE pGTCache;
|
---|
508 | /** Pointer to the descriptor (NULL if no separate descriptor file). */
|
---|
509 | char *pDescData;
|
---|
510 | /** Allocation size of the descriptor file. */
|
---|
511 | size_t cbDescAlloc;
|
---|
512 | /** Parsed descriptor file content. */
|
---|
513 | VMDKDESCRIPTOR Descriptor;
|
---|
514 | /** The static region list. */
|
---|
515 | VDREGIONLIST RegionList;
|
---|
516 | } VMDKIMAGE;
|
---|
517 |
|
---|
518 |
|
---|
519 | /** State for the input/output callout of the inflate reader/deflate writer. */
|
---|
520 | typedef struct VMDKCOMPRESSIO
|
---|
521 | {
|
---|
522 | /* Image this operation relates to. */
|
---|
523 | PVMDKIMAGE pImage;
|
---|
524 | /* Current read position. */
|
---|
525 | ssize_t iOffset;
|
---|
526 | /* Size of the compressed grain buffer (available data). */
|
---|
527 | size_t cbCompGrain;
|
---|
528 | /* Pointer to the compressed grain buffer. */
|
---|
529 | void *pvCompGrain;
|
---|
530 | } VMDKCOMPRESSIO;
|
---|
531 |
|
---|
532 |
|
---|
533 | /** Tracks async grain allocation. */
|
---|
534 | typedef struct VMDKGRAINALLOCASYNC
|
---|
535 | {
|
---|
536 | /** Flag whether the allocation failed. */
|
---|
537 | bool fIoErr;
|
---|
538 | /** Current number of transfers pending.
|
---|
539 | * If reached 0 and there is an error the old state is restored. */
|
---|
540 | unsigned cIoXfersPending;
|
---|
541 | /** Sector number */
|
---|
542 | uint64_t uSector;
|
---|
543 | /** Flag whether the grain table needs to be updated. */
|
---|
544 | bool fGTUpdateNeeded;
|
---|
545 | /** Extent the allocation happens. */
|
---|
546 | PVMDKEXTENT pExtent;
|
---|
547 | /** Position of the new grain, required for the grain table update. */
|
---|
548 | uint64_t uGrainOffset;
|
---|
549 | /** Grain table sector. */
|
---|
550 | uint64_t uGTSector;
|
---|
551 | /** Backup grain table sector. */
|
---|
552 | uint64_t uRGTSector;
|
---|
553 | } VMDKGRAINALLOCASYNC, *PVMDKGRAINALLOCASYNC;
|
---|
554 |
|
---|
555 | /**
|
---|
556 | * State information for vmdkRename() and helpers.
|
---|
557 | */
|
---|
558 | typedef struct VMDKRENAMESTATE
|
---|
559 | {
|
---|
560 | /** Array of old filenames. */
|
---|
561 | char **apszOldName;
|
---|
562 | /** Array of new filenames. */
|
---|
563 | char **apszNewName;
|
---|
564 | /** Array of new lines in the extent descriptor. */
|
---|
565 | char **apszNewLines;
|
---|
566 | /** Name of the old descriptor file if not a sparse image. */
|
---|
567 | char *pszOldDescName;
|
---|
568 | /** Flag whether we called vmdkFreeImage(). */
|
---|
569 | bool fImageFreed;
|
---|
570 | /** Flag whther the descriptor is embedded in the image (sparse) or
|
---|
571 | * in a separate file. */
|
---|
572 | bool fEmbeddedDesc;
|
---|
573 | /** Number of extents in the image. */
|
---|
574 | unsigned cExtents;
|
---|
575 | /** New base filename. */
|
---|
576 | char *pszNewBaseName;
|
---|
577 | /** The old base filename. */
|
---|
578 | char *pszOldBaseName;
|
---|
579 | /** New full filename. */
|
---|
580 | char *pszNewFullName;
|
---|
581 | /** Old full filename. */
|
---|
582 | char *pszOldFullName;
|
---|
583 | /** The old image name. */
|
---|
584 | const char *pszOldImageName;
|
---|
585 | /** Copy of the original VMDK descriptor. */
|
---|
586 | VMDKDESCRIPTOR DescriptorCopy;
|
---|
587 | /** Copy of the extent state for sparse images. */
|
---|
588 | VMDKEXTENT ExtentCopy;
|
---|
589 | } VMDKRENAMESTATE;
|
---|
590 | /** Pointer to a VMDK rename state. */
|
---|
591 | typedef VMDKRENAMESTATE *PVMDKRENAMESTATE;
|
---|
592 |
|
---|
593 |
|
---|
594 | /*********************************************************************************************************************************
|
---|
595 | * Static Variables *
|
---|
596 | *********************************************************************************************************************************/
|
---|
597 |
|
---|
598 | /** NULL-terminated array of supported file extensions. */
|
---|
599 | static const VDFILEEXTENSION s_aVmdkFileExtensions[] =
|
---|
600 | {
|
---|
601 | {"vmdk", VDTYPE_HDD},
|
---|
602 | {NULL, VDTYPE_INVALID}
|
---|
603 | };
|
---|
604 |
|
---|
605 | /** NULL-terminated array of configuration option. */
|
---|
606 | static const VDCONFIGINFO s_aVmdkConfigInfo[] =
|
---|
607 | {
|
---|
608 | /* Options for VMDK raw disks */
|
---|
609 | { "RawDrive", NULL, VDCFGVALUETYPE_STRING, 0 },
|
---|
610 | { "Partitions", NULL, VDCFGVALUETYPE_STRING, 0 },
|
---|
611 | { "BootSector", NULL, VDCFGVALUETYPE_BYTES, 0 },
|
---|
612 | { "Relative", NULL, VDCFGVALUETYPE_INTEGER, 0 },
|
---|
613 |
|
---|
614 | /* End of options list */
|
---|
615 | { NULL, NULL, VDCFGVALUETYPE_INTEGER, 0 }
|
---|
616 | };
|
---|
617 |
|
---|
618 |
|
---|
619 | /*********************************************************************************************************************************
|
---|
620 | * Internal Functions *
|
---|
621 | *********************************************************************************************************************************/
|
---|
622 |
|
---|
623 | static void vmdkFreeStreamBuffers(PVMDKEXTENT pExtent);
|
---|
624 | static int vmdkFreeExtentData(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
625 | bool fDelete);
|
---|
626 |
|
---|
627 | static int vmdkCreateExtents(PVMDKIMAGE pImage, unsigned cExtents);
|
---|
628 | static int vmdkFlushImage(PVMDKIMAGE pImage, PVDIOCTX pIoCtx);
|
---|
629 | static int vmdkSetImageComment(PVMDKIMAGE pImage, const char *pszComment);
|
---|
630 | static int vmdkFreeImage(PVMDKIMAGE pImage, bool fDelete, bool fFlush);
|
---|
631 |
|
---|
632 | static DECLCALLBACK(int) vmdkAllocGrainComplete(void *pBackendData, PVDIOCTX pIoCtx,
|
---|
633 | void *pvUser, int rcReq);
|
---|
634 |
|
---|
635 | /**
|
---|
636 | * Internal: open a file (using a file descriptor cache to ensure each file
|
---|
637 | * is only opened once - anything else can cause locking problems).
|
---|
638 | */
|
---|
639 | static int vmdkFileOpen(PVMDKIMAGE pImage, PVMDKFILE *ppVmdkFile,
|
---|
640 | const char *pszBasename, const char *pszFilename, uint32_t fOpen)
|
---|
641 | {
|
---|
642 | int rc = VINF_SUCCESS;
|
---|
643 | PVMDKFILE pVmdkFile;
|
---|
644 |
|
---|
645 | for (pVmdkFile = pImage->pFiles;
|
---|
646 | pVmdkFile != NULL;
|
---|
647 | pVmdkFile = pVmdkFile->pNext)
|
---|
648 | {
|
---|
649 | if (!strcmp(pszFilename, pVmdkFile->pszFilename))
|
---|
650 | {
|
---|
651 | Assert(fOpen == pVmdkFile->fOpen);
|
---|
652 | pVmdkFile->uReferences++;
|
---|
653 |
|
---|
654 | *ppVmdkFile = pVmdkFile;
|
---|
655 |
|
---|
656 | return rc;
|
---|
657 | }
|
---|
658 | }
|
---|
659 |
|
---|
660 | /* If we get here, there's no matching entry in the cache. */
|
---|
661 | pVmdkFile = (PVMDKFILE)RTMemAllocZ(sizeof(VMDKFILE));
|
---|
662 | if (!pVmdkFile)
|
---|
663 | {
|
---|
664 | *ppVmdkFile = NULL;
|
---|
665 | return VERR_NO_MEMORY;
|
---|
666 | }
|
---|
667 |
|
---|
668 | pVmdkFile->pszFilename = RTStrDup(pszFilename);
|
---|
669 | if (!pVmdkFile->pszFilename)
|
---|
670 | {
|
---|
671 | RTMemFree(pVmdkFile);
|
---|
672 | *ppVmdkFile = NULL;
|
---|
673 | return VERR_NO_MEMORY;
|
---|
674 | }
|
---|
675 |
|
---|
676 | if (pszBasename)
|
---|
677 | {
|
---|
678 | pVmdkFile->pszBasename = RTStrDup(pszBasename);
|
---|
679 | if (!pVmdkFile->pszBasename)
|
---|
680 | {
|
---|
681 | RTStrFree((char *)(void *)pVmdkFile->pszFilename);
|
---|
682 | RTMemFree(pVmdkFile);
|
---|
683 | *ppVmdkFile = NULL;
|
---|
684 | return VERR_NO_MEMORY;
|
---|
685 | }
|
---|
686 | }
|
---|
687 |
|
---|
688 | pVmdkFile->fOpen = fOpen;
|
---|
689 |
|
---|
690 | rc = vdIfIoIntFileOpen(pImage->pIfIo, pszFilename, fOpen,
|
---|
691 | &pVmdkFile->pStorage);
|
---|
692 | if (RT_SUCCESS(rc))
|
---|
693 | {
|
---|
694 | pVmdkFile->uReferences = 1;
|
---|
695 | pVmdkFile->pImage = pImage;
|
---|
696 | pVmdkFile->pNext = pImage->pFiles;
|
---|
697 | if (pImage->pFiles)
|
---|
698 | pImage->pFiles->pPrev = pVmdkFile;
|
---|
699 | pImage->pFiles = pVmdkFile;
|
---|
700 | *ppVmdkFile = pVmdkFile;
|
---|
701 | }
|
---|
702 | else
|
---|
703 | {
|
---|
704 | RTStrFree((char *)(void *)pVmdkFile->pszFilename);
|
---|
705 | RTMemFree(pVmdkFile);
|
---|
706 | *ppVmdkFile = NULL;
|
---|
707 | }
|
---|
708 |
|
---|
709 | return rc;
|
---|
710 | }
|
---|
711 |
|
---|
712 | /**
|
---|
713 | * Internal: close a file, updating the file descriptor cache.
|
---|
714 | */
|
---|
715 | static int vmdkFileClose(PVMDKIMAGE pImage, PVMDKFILE *ppVmdkFile, bool fDelete)
|
---|
716 | {
|
---|
717 | int rc = VINF_SUCCESS;
|
---|
718 | PVMDKFILE pVmdkFile = *ppVmdkFile;
|
---|
719 |
|
---|
720 | AssertPtr(pVmdkFile);
|
---|
721 |
|
---|
722 | pVmdkFile->fDelete |= fDelete;
|
---|
723 | Assert(pVmdkFile->uReferences);
|
---|
724 | pVmdkFile->uReferences--;
|
---|
725 | if (pVmdkFile->uReferences == 0)
|
---|
726 | {
|
---|
727 | PVMDKFILE pPrev;
|
---|
728 | PVMDKFILE pNext;
|
---|
729 |
|
---|
730 | /* Unchain the element from the list. */
|
---|
731 | pPrev = pVmdkFile->pPrev;
|
---|
732 | pNext = pVmdkFile->pNext;
|
---|
733 |
|
---|
734 | if (pNext)
|
---|
735 | pNext->pPrev = pPrev;
|
---|
736 | if (pPrev)
|
---|
737 | pPrev->pNext = pNext;
|
---|
738 | else
|
---|
739 | pImage->pFiles = pNext;
|
---|
740 |
|
---|
741 | rc = vdIfIoIntFileClose(pImage->pIfIo, pVmdkFile->pStorage);
|
---|
742 |
|
---|
743 | bool fFileDel = pVmdkFile->fDelete;
|
---|
744 | if ( pVmdkFile->pszBasename
|
---|
745 | && fFileDel)
|
---|
746 | {
|
---|
747 | const char *pszSuffix = RTPathSuffix(pVmdkFile->pszBasename);
|
---|
748 | if ( RTPathHasPath(pVmdkFile->pszBasename)
|
---|
749 | || !pszSuffix
|
---|
750 | || ( strcmp(pszSuffix, ".vmdk")
|
---|
751 | && strcmp(pszSuffix, ".bin")
|
---|
752 | && strcmp(pszSuffix, ".img")))
|
---|
753 | fFileDel = false;
|
---|
754 | }
|
---|
755 |
|
---|
756 | if (fFileDel)
|
---|
757 | {
|
---|
758 | int rc2 = vdIfIoIntFileDelete(pImage->pIfIo, pVmdkFile->pszFilename);
|
---|
759 | if (RT_SUCCESS(rc))
|
---|
760 | rc = rc2;
|
---|
761 | }
|
---|
762 | else if (pVmdkFile->fDelete)
|
---|
763 | LogRel(("VMDK: Denying deletion of %s\n", pVmdkFile->pszBasename));
|
---|
764 | RTStrFree((char *)(void *)pVmdkFile->pszFilename);
|
---|
765 | if (pVmdkFile->pszBasename)
|
---|
766 | RTStrFree((char *)(void *)pVmdkFile->pszBasename);
|
---|
767 | RTMemFree(pVmdkFile);
|
---|
768 | }
|
---|
769 |
|
---|
770 | *ppVmdkFile = NULL;
|
---|
771 | return rc;
|
---|
772 | }
|
---|
773 |
|
---|
774 | /*#define VMDK_USE_BLOCK_DECOMP_API - test and enable */
|
---|
775 | #ifndef VMDK_USE_BLOCK_DECOMP_API
|
---|
776 | static DECLCALLBACK(int) vmdkFileInflateHelper(void *pvUser, void *pvBuf, size_t cbBuf, size_t *pcbBuf)
|
---|
777 | {
|
---|
778 | VMDKCOMPRESSIO *pInflateState = (VMDKCOMPRESSIO *)pvUser;
|
---|
779 | size_t cbInjected = 0;
|
---|
780 |
|
---|
781 | Assert(cbBuf);
|
---|
782 | if (pInflateState->iOffset < 0)
|
---|
783 | {
|
---|
784 | *(uint8_t *)pvBuf = RTZIPTYPE_ZLIB;
|
---|
785 | pvBuf = (uint8_t *)pvBuf + 1;
|
---|
786 | cbBuf--;
|
---|
787 | cbInjected = 1;
|
---|
788 | pInflateState->iOffset = RT_UOFFSETOF(VMDKMARKER, uType);
|
---|
789 | }
|
---|
790 | if (!cbBuf)
|
---|
791 | {
|
---|
792 | if (pcbBuf)
|
---|
793 | *pcbBuf = cbInjected;
|
---|
794 | return VINF_SUCCESS;
|
---|
795 | }
|
---|
796 | cbBuf = RT_MIN(cbBuf, pInflateState->cbCompGrain - pInflateState->iOffset);
|
---|
797 | memcpy(pvBuf,
|
---|
798 | (uint8_t *)pInflateState->pvCompGrain + pInflateState->iOffset,
|
---|
799 | cbBuf);
|
---|
800 | pInflateState->iOffset += cbBuf;
|
---|
801 | Assert(pcbBuf);
|
---|
802 | *pcbBuf = cbBuf + cbInjected;
|
---|
803 | return VINF_SUCCESS;
|
---|
804 | }
|
---|
805 | #endif
|
---|
806 |
|
---|
807 | /**
|
---|
808 | * Internal: read from a file and inflate the compressed data,
|
---|
809 | * distinguishing between async and normal operation
|
---|
810 | */
|
---|
811 | DECLINLINE(int) vmdkFileInflateSync(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
812 | uint64_t uOffset, void *pvBuf,
|
---|
813 | size_t cbToRead, const void *pcvMarker,
|
---|
814 | uint64_t *puLBA, uint32_t *pcbMarkerData)
|
---|
815 | {
|
---|
816 | int rc;
|
---|
817 | #ifndef VMDK_USE_BLOCK_DECOMP_API
|
---|
818 | PRTZIPDECOMP pZip = NULL;
|
---|
819 | #endif
|
---|
820 | VMDKMARKER *pMarker = (VMDKMARKER *)pExtent->pvCompGrain;
|
---|
821 | size_t cbCompSize, cbActuallyRead;
|
---|
822 |
|
---|
823 | if (!pcvMarker)
|
---|
824 | {
|
---|
825 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
826 | uOffset, pMarker, RT_UOFFSETOF(VMDKMARKER, uType));
|
---|
827 | if (RT_FAILURE(rc))
|
---|
828 | return rc;
|
---|
829 | }
|
---|
830 | else
|
---|
831 | {
|
---|
832 | memcpy(pMarker, pcvMarker, RT_UOFFSETOF(VMDKMARKER, uType));
|
---|
833 | /* pcvMarker endianness has already been partially transformed, fix it */
|
---|
834 | pMarker->uSector = RT_H2LE_U64(pMarker->uSector);
|
---|
835 | pMarker->cbSize = RT_H2LE_U32(pMarker->cbSize);
|
---|
836 | }
|
---|
837 |
|
---|
838 | cbCompSize = RT_LE2H_U32(pMarker->cbSize);
|
---|
839 | if (cbCompSize == 0)
|
---|
840 | {
|
---|
841 | AssertMsgFailed(("VMDK: corrupted marker\n"));
|
---|
842 | return VERR_VD_VMDK_INVALID_FORMAT;
|
---|
843 | }
|
---|
844 |
|
---|
845 | /* Sanity check - the expansion ratio should be much less than 2. */
|
---|
846 | Assert(cbCompSize < 2 * cbToRead);
|
---|
847 | if (cbCompSize >= 2 * cbToRead)
|
---|
848 | return VERR_VD_VMDK_INVALID_FORMAT;
|
---|
849 |
|
---|
850 | /* Compressed grain marker. Data follows immediately. */
|
---|
851 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
852 | uOffset + RT_UOFFSETOF(VMDKMARKER, uType),
|
---|
853 | (uint8_t *)pExtent->pvCompGrain
|
---|
854 | + RT_UOFFSETOF(VMDKMARKER, uType),
|
---|
855 | RT_ALIGN_Z( cbCompSize
|
---|
856 | + RT_UOFFSETOF(VMDKMARKER, uType),
|
---|
857 | 512)
|
---|
858 | - RT_UOFFSETOF(VMDKMARKER, uType));
|
---|
859 |
|
---|
860 | if (puLBA)
|
---|
861 | *puLBA = RT_LE2H_U64(pMarker->uSector);
|
---|
862 | if (pcbMarkerData)
|
---|
863 | *pcbMarkerData = RT_ALIGN( cbCompSize
|
---|
864 | + RT_UOFFSETOF(VMDKMARKER, uType),
|
---|
865 | 512);
|
---|
866 |
|
---|
867 | #ifdef VMDK_USE_BLOCK_DECOMP_API
|
---|
868 | rc = RTZipBlockDecompress(RTZIPTYPE_ZLIB, 0 /*fFlags*/,
|
---|
869 | pExtent->pvCompGrain, cbCompSize + RT_UOFFSETOF(VMDKMARKER, uType), NULL,
|
---|
870 | pvBuf, cbToRead, &cbActuallyRead);
|
---|
871 | #else
|
---|
872 | VMDKCOMPRESSIO InflateState;
|
---|
873 | InflateState.pImage = pImage;
|
---|
874 | InflateState.iOffset = -1;
|
---|
875 | InflateState.cbCompGrain = cbCompSize + RT_UOFFSETOF(VMDKMARKER, uType);
|
---|
876 | InflateState.pvCompGrain = pExtent->pvCompGrain;
|
---|
877 |
|
---|
878 | rc = RTZipDecompCreate(&pZip, &InflateState, vmdkFileInflateHelper);
|
---|
879 | if (RT_FAILURE(rc))
|
---|
880 | return rc;
|
---|
881 | rc = RTZipDecompress(pZip, pvBuf, cbToRead, &cbActuallyRead);
|
---|
882 | RTZipDecompDestroy(pZip);
|
---|
883 | #endif /* !VMDK_USE_BLOCK_DECOMP_API */
|
---|
884 | if (RT_FAILURE(rc))
|
---|
885 | {
|
---|
886 | if (rc == VERR_ZIP_CORRUPTED)
|
---|
887 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: Compressed image is corrupted '%s'"), pExtent->pszFullname);
|
---|
888 | return rc;
|
---|
889 | }
|
---|
890 | if (cbActuallyRead != cbToRead)
|
---|
891 | rc = VERR_VD_VMDK_INVALID_FORMAT;
|
---|
892 | return rc;
|
---|
893 | }
|
---|
894 |
|
---|
895 | static DECLCALLBACK(int) vmdkFileDeflateHelper(void *pvUser, const void *pvBuf, size_t cbBuf)
|
---|
896 | {
|
---|
897 | VMDKCOMPRESSIO *pDeflateState = (VMDKCOMPRESSIO *)pvUser;
|
---|
898 |
|
---|
899 | Assert(cbBuf);
|
---|
900 | if (pDeflateState->iOffset < 0)
|
---|
901 | {
|
---|
902 | pvBuf = (const uint8_t *)pvBuf + 1;
|
---|
903 | cbBuf--;
|
---|
904 | pDeflateState->iOffset = RT_UOFFSETOF(VMDKMARKER, uType);
|
---|
905 | }
|
---|
906 | if (!cbBuf)
|
---|
907 | return VINF_SUCCESS;
|
---|
908 | if (pDeflateState->iOffset + cbBuf > pDeflateState->cbCompGrain)
|
---|
909 | return VERR_BUFFER_OVERFLOW;
|
---|
910 | memcpy((uint8_t *)pDeflateState->pvCompGrain + pDeflateState->iOffset,
|
---|
911 | pvBuf, cbBuf);
|
---|
912 | pDeflateState->iOffset += cbBuf;
|
---|
913 | return VINF_SUCCESS;
|
---|
914 | }
|
---|
915 |
|
---|
916 | /**
|
---|
917 | * Internal: deflate the uncompressed data and write to a file,
|
---|
918 | * distinguishing between async and normal operation
|
---|
919 | */
|
---|
920 | DECLINLINE(int) vmdkFileDeflateSync(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
921 | uint64_t uOffset, const void *pvBuf,
|
---|
922 | size_t cbToWrite, uint64_t uLBA,
|
---|
923 | uint32_t *pcbMarkerData)
|
---|
924 | {
|
---|
925 | int rc;
|
---|
926 | PRTZIPCOMP pZip = NULL;
|
---|
927 | VMDKCOMPRESSIO DeflateState;
|
---|
928 |
|
---|
929 | DeflateState.pImage = pImage;
|
---|
930 | DeflateState.iOffset = -1;
|
---|
931 | DeflateState.cbCompGrain = pExtent->cbCompGrain;
|
---|
932 | DeflateState.pvCompGrain = pExtent->pvCompGrain;
|
---|
933 |
|
---|
934 | rc = RTZipCompCreate(&pZip, &DeflateState, vmdkFileDeflateHelper,
|
---|
935 | RTZIPTYPE_ZLIB, RTZIPLEVEL_DEFAULT);
|
---|
936 | if (RT_FAILURE(rc))
|
---|
937 | return rc;
|
---|
938 | rc = RTZipCompress(pZip, pvBuf, cbToWrite);
|
---|
939 | if (RT_SUCCESS(rc))
|
---|
940 | rc = RTZipCompFinish(pZip);
|
---|
941 | RTZipCompDestroy(pZip);
|
---|
942 | if (RT_SUCCESS(rc))
|
---|
943 | {
|
---|
944 | Assert( DeflateState.iOffset > 0
|
---|
945 | && (size_t)DeflateState.iOffset <= DeflateState.cbCompGrain);
|
---|
946 |
|
---|
947 | /* pad with zeroes to get to a full sector size */
|
---|
948 | uint32_t uSize = DeflateState.iOffset;
|
---|
949 | if (uSize % 512)
|
---|
950 | {
|
---|
951 | uint32_t uSizeAlign = RT_ALIGN(uSize, 512);
|
---|
952 | memset((uint8_t *)pExtent->pvCompGrain + uSize, '\0',
|
---|
953 | uSizeAlign - uSize);
|
---|
954 | uSize = uSizeAlign;
|
---|
955 | }
|
---|
956 |
|
---|
957 | if (pcbMarkerData)
|
---|
958 | *pcbMarkerData = uSize;
|
---|
959 |
|
---|
960 | /* Compressed grain marker. Data follows immediately. */
|
---|
961 | VMDKMARKER *pMarker = (VMDKMARKER *)pExtent->pvCompGrain;
|
---|
962 | pMarker->uSector = RT_H2LE_U64(uLBA);
|
---|
963 | pMarker->cbSize = RT_H2LE_U32( DeflateState.iOffset
|
---|
964 | - RT_UOFFSETOF(VMDKMARKER, uType));
|
---|
965 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
966 | uOffset, pMarker, uSize);
|
---|
967 | if (RT_FAILURE(rc))
|
---|
968 | return rc;
|
---|
969 | }
|
---|
970 | return rc;
|
---|
971 | }
|
---|
972 |
|
---|
973 |
|
---|
974 | /**
|
---|
975 | * Internal: check if all files are closed, prevent leaking resources.
|
---|
976 | */
|
---|
977 | static int vmdkFileCheckAllClose(PVMDKIMAGE pImage)
|
---|
978 | {
|
---|
979 | int rc = VINF_SUCCESS, rc2;
|
---|
980 | PVMDKFILE pVmdkFile;
|
---|
981 |
|
---|
982 | Assert(pImage->pFiles == NULL);
|
---|
983 | for (pVmdkFile = pImage->pFiles;
|
---|
984 | pVmdkFile != NULL;
|
---|
985 | pVmdkFile = pVmdkFile->pNext)
|
---|
986 | {
|
---|
987 | LogRel(("VMDK: leaking reference to file \"%s\"\n",
|
---|
988 | pVmdkFile->pszFilename));
|
---|
989 | pImage->pFiles = pVmdkFile->pNext;
|
---|
990 |
|
---|
991 | rc2 = vmdkFileClose(pImage, &pVmdkFile, pVmdkFile->fDelete);
|
---|
992 |
|
---|
993 | if (RT_SUCCESS(rc))
|
---|
994 | rc = rc2;
|
---|
995 | }
|
---|
996 | return rc;
|
---|
997 | }
|
---|
998 |
|
---|
999 | /**
|
---|
1000 | * Internal: truncate a string (at a UTF8 code point boundary) and encode the
|
---|
1001 | * critical non-ASCII characters.
|
---|
1002 | */
|
---|
1003 | static char *vmdkEncodeString(const char *psz)
|
---|
1004 | {
|
---|
1005 | char szEnc[VMDK_ENCODED_COMMENT_MAX + 3];
|
---|
1006 | char *pszDst = szEnc;
|
---|
1007 |
|
---|
1008 | AssertPtr(psz);
|
---|
1009 |
|
---|
1010 | for (; *psz; psz = RTStrNextCp(psz))
|
---|
1011 | {
|
---|
1012 | char *pszDstPrev = pszDst;
|
---|
1013 | RTUNICP Cp = RTStrGetCp(psz);
|
---|
1014 | if (Cp == '\\')
|
---|
1015 | {
|
---|
1016 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
1017 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
1018 | }
|
---|
1019 | else if (Cp == '\n')
|
---|
1020 | {
|
---|
1021 | pszDst = RTStrPutCp(pszDst, '\\');
|
---|
1022 | pszDst = RTStrPutCp(pszDst, 'n');
|
---|
1023 | }
|
---|
1024 | else if (Cp == '\r')
|
---|
1025 | {
|
---|
1026 | pszDst = RTStrPutCp(pszDst, '\\');
|
---|
1027 | pszDst = RTStrPutCp(pszDst, 'r');
|
---|
1028 | }
|
---|
1029 | else
|
---|
1030 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
1031 | if (pszDst - szEnc >= VMDK_ENCODED_COMMENT_MAX - 1)
|
---|
1032 | {
|
---|
1033 | pszDst = pszDstPrev;
|
---|
1034 | break;
|
---|
1035 | }
|
---|
1036 | }
|
---|
1037 | *pszDst = '\0';
|
---|
1038 | return RTStrDup(szEnc);
|
---|
1039 | }
|
---|
1040 |
|
---|
1041 | /**
|
---|
1042 | * Internal: decode a string and store it into the specified string.
|
---|
1043 | */
|
---|
1044 | static int vmdkDecodeString(const char *pszEncoded, char *psz, size_t cb)
|
---|
1045 | {
|
---|
1046 | int rc = VINF_SUCCESS;
|
---|
1047 | char szBuf[4];
|
---|
1048 |
|
---|
1049 | if (!cb)
|
---|
1050 | return VERR_BUFFER_OVERFLOW;
|
---|
1051 |
|
---|
1052 | AssertPtr(psz);
|
---|
1053 |
|
---|
1054 | for (; *pszEncoded; pszEncoded = RTStrNextCp(pszEncoded))
|
---|
1055 | {
|
---|
1056 | char *pszDst = szBuf;
|
---|
1057 | RTUNICP Cp = RTStrGetCp(pszEncoded);
|
---|
1058 | if (Cp == '\\')
|
---|
1059 | {
|
---|
1060 | pszEncoded = RTStrNextCp(pszEncoded);
|
---|
1061 | RTUNICP CpQ = RTStrGetCp(pszEncoded);
|
---|
1062 | if (CpQ == 'n')
|
---|
1063 | RTStrPutCp(pszDst, '\n');
|
---|
1064 | else if (CpQ == 'r')
|
---|
1065 | RTStrPutCp(pszDst, '\r');
|
---|
1066 | else if (CpQ == '\0')
|
---|
1067 | {
|
---|
1068 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
1069 | break;
|
---|
1070 | }
|
---|
1071 | else
|
---|
1072 | RTStrPutCp(pszDst, CpQ);
|
---|
1073 | }
|
---|
1074 | else
|
---|
1075 | pszDst = RTStrPutCp(pszDst, Cp);
|
---|
1076 |
|
---|
1077 | /* Need to leave space for terminating NUL. */
|
---|
1078 | if ((size_t)(pszDst - szBuf) + 1 >= cb)
|
---|
1079 | {
|
---|
1080 | rc = VERR_BUFFER_OVERFLOW;
|
---|
1081 | break;
|
---|
1082 | }
|
---|
1083 | memcpy(psz, szBuf, pszDst - szBuf);
|
---|
1084 | psz += pszDst - szBuf;
|
---|
1085 | }
|
---|
1086 | *psz = '\0';
|
---|
1087 | return rc;
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 | /**
|
---|
1091 | * Internal: free all buffers associated with grain directories.
|
---|
1092 | */
|
---|
1093 | static void vmdkFreeGrainDirectory(PVMDKEXTENT pExtent)
|
---|
1094 | {
|
---|
1095 | if (pExtent->pGD)
|
---|
1096 | {
|
---|
1097 | RTMemFree(pExtent->pGD);
|
---|
1098 | pExtent->pGD = NULL;
|
---|
1099 | }
|
---|
1100 | if (pExtent->pRGD)
|
---|
1101 | {
|
---|
1102 | RTMemFree(pExtent->pRGD);
|
---|
1103 | pExtent->pRGD = NULL;
|
---|
1104 | }
|
---|
1105 | }
|
---|
1106 |
|
---|
1107 | /**
|
---|
1108 | * Internal: allocate the compressed/uncompressed buffers for streamOptimized
|
---|
1109 | * images.
|
---|
1110 | */
|
---|
1111 | static int vmdkAllocStreamBuffers(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
1112 | {
|
---|
1113 | int rc = VINF_SUCCESS;
|
---|
1114 |
|
---|
1115 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
1116 | {
|
---|
1117 | /* streamOptimized extents need a compressed grain buffer, which must
|
---|
1118 | * be big enough to hold uncompressible data (which needs ~8 bytes
|
---|
1119 | * more than the uncompressed data), the marker and padding. */
|
---|
1120 | pExtent->cbCompGrain = RT_ALIGN_Z( VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain)
|
---|
1121 | + 8 + sizeof(VMDKMARKER), 512);
|
---|
1122 | pExtent->pvCompGrain = RTMemAlloc(pExtent->cbCompGrain);
|
---|
1123 | if (RT_LIKELY(pExtent->pvCompGrain))
|
---|
1124 | {
|
---|
1125 | /* streamOptimized extents need a decompressed grain buffer. */
|
---|
1126 | pExtent->pvGrain = RTMemAlloc(VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
1127 | if (!pExtent->pvGrain)
|
---|
1128 | rc = VERR_NO_MEMORY;
|
---|
1129 | }
|
---|
1130 | else
|
---|
1131 | rc = VERR_NO_MEMORY;
|
---|
1132 | }
|
---|
1133 |
|
---|
1134 | if (RT_FAILURE(rc))
|
---|
1135 | vmdkFreeStreamBuffers(pExtent);
|
---|
1136 | return rc;
|
---|
1137 | }
|
---|
1138 |
|
---|
1139 | /**
|
---|
1140 | * Internal: allocate all buffers associated with grain directories.
|
---|
1141 | */
|
---|
1142 | static int vmdkAllocGrainDirectory(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
1143 | {
|
---|
1144 | RT_NOREF1(pImage);
|
---|
1145 | int rc = VINF_SUCCESS;
|
---|
1146 | size_t cbGD = pExtent->cGDEntries * sizeof(uint32_t);
|
---|
1147 |
|
---|
1148 | pExtent->pGD = (uint32_t *)RTMemAllocZ(cbGD);
|
---|
1149 | if (RT_LIKELY(pExtent->pGD))
|
---|
1150 | {
|
---|
1151 | if (pExtent->uSectorRGD)
|
---|
1152 | {
|
---|
1153 | pExtent->pRGD = (uint32_t *)RTMemAllocZ(cbGD);
|
---|
1154 | if (RT_UNLIKELY(!pExtent->pRGD))
|
---|
1155 | rc = VERR_NO_MEMORY;
|
---|
1156 | }
|
---|
1157 | }
|
---|
1158 | else
|
---|
1159 | rc = VERR_NO_MEMORY;
|
---|
1160 |
|
---|
1161 | if (RT_FAILURE(rc))
|
---|
1162 | vmdkFreeGrainDirectory(pExtent);
|
---|
1163 | return rc;
|
---|
1164 | }
|
---|
1165 |
|
---|
1166 | /**
|
---|
1167 | * Converts the grain directory from little to host endianess.
|
---|
1168 | *
|
---|
1169 | * @param pGD The grain directory.
|
---|
1170 | * @param cGDEntries Number of entries in the grain directory to convert.
|
---|
1171 | */
|
---|
1172 | DECLINLINE(void) vmdkGrainDirectoryConvToHost(uint32_t *pGD, uint32_t cGDEntries)
|
---|
1173 | {
|
---|
1174 | uint32_t *pGDTmp = pGD;
|
---|
1175 |
|
---|
1176 | for (uint32_t i = 0; i < cGDEntries; i++, pGDTmp++)
|
---|
1177 | *pGDTmp = RT_LE2H_U32(*pGDTmp);
|
---|
1178 | }
|
---|
1179 |
|
---|
1180 | /**
|
---|
1181 | * Read the grain directory and allocated grain tables verifying them against
|
---|
1182 | * their back up copies if available.
|
---|
1183 | *
|
---|
1184 | * @returns VBox status code.
|
---|
1185 | * @param pImage Image instance data.
|
---|
1186 | * @param pExtent The VMDK extent.
|
---|
1187 | */
|
---|
1188 | static int vmdkReadGrainDirectory(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
1189 | {
|
---|
1190 | int rc = VINF_SUCCESS;
|
---|
1191 | size_t cbGD = pExtent->cGDEntries * sizeof(uint32_t);
|
---|
1192 |
|
---|
1193 | AssertReturn(( pExtent->enmType == VMDKETYPE_HOSTED_SPARSE
|
---|
1194 | && pExtent->uSectorGD != VMDK_GD_AT_END
|
---|
1195 | && pExtent->uSectorRGD != VMDK_GD_AT_END), VERR_INTERNAL_ERROR);
|
---|
1196 |
|
---|
1197 | rc = vmdkAllocGrainDirectory(pImage, pExtent);
|
---|
1198 | if (RT_SUCCESS(rc))
|
---|
1199 | {
|
---|
1200 | /* The VMDK 1.1 spec seems to talk about compressed grain directories,
|
---|
1201 | * but in reality they are not compressed. */
|
---|
1202 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1203 | VMDK_SECTOR2BYTE(pExtent->uSectorGD),
|
---|
1204 | pExtent->pGD, cbGD);
|
---|
1205 | if (RT_SUCCESS(rc))
|
---|
1206 | {
|
---|
1207 | vmdkGrainDirectoryConvToHost(pExtent->pGD, pExtent->cGDEntries);
|
---|
1208 |
|
---|
1209 | if ( pExtent->uSectorRGD
|
---|
1210 | && !(pImage->uOpenFlags & VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS))
|
---|
1211 | {
|
---|
1212 | /* The VMDK 1.1 spec seems to talk about compressed grain directories,
|
---|
1213 | * but in reality they are not compressed. */
|
---|
1214 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1215 | VMDK_SECTOR2BYTE(pExtent->uSectorRGD),
|
---|
1216 | pExtent->pRGD, cbGD);
|
---|
1217 | if (RT_SUCCESS(rc))
|
---|
1218 | {
|
---|
1219 | vmdkGrainDirectoryConvToHost(pExtent->pRGD, pExtent->cGDEntries);
|
---|
1220 |
|
---|
1221 | /* Check grain table and redundant grain table for consistency. */
|
---|
1222 | size_t cbGT = pExtent->cGTEntries * sizeof(uint32_t);
|
---|
1223 | size_t cbGTBuffers = cbGT; /* Start with space for one GT. */
|
---|
1224 | size_t cbGTBuffersMax = _1M;
|
---|
1225 |
|
---|
1226 | uint32_t *pTmpGT1 = (uint32_t *)RTMemAlloc(cbGTBuffers);
|
---|
1227 | uint32_t *pTmpGT2 = (uint32_t *)RTMemAlloc(cbGTBuffers);
|
---|
1228 |
|
---|
1229 | if ( !pTmpGT1
|
---|
1230 | || !pTmpGT2)
|
---|
1231 | rc = VERR_NO_MEMORY;
|
---|
1232 |
|
---|
1233 | size_t i = 0;
|
---|
1234 | uint32_t *pGDTmp = pExtent->pGD;
|
---|
1235 | uint32_t *pRGDTmp = pExtent->pRGD;
|
---|
1236 |
|
---|
1237 | /* Loop through all entries. */
|
---|
1238 | while (i < pExtent->cGDEntries)
|
---|
1239 | {
|
---|
1240 | uint32_t uGTStart = *pGDTmp;
|
---|
1241 | uint32_t uRGTStart = *pRGDTmp;
|
---|
1242 | size_t cbGTRead = cbGT;
|
---|
1243 |
|
---|
1244 | /* If no grain table is allocated skip the entry. */
|
---|
1245 | if (*pGDTmp == 0 && *pRGDTmp == 0)
|
---|
1246 | {
|
---|
1247 | i++;
|
---|
1248 | continue;
|
---|
1249 | }
|
---|
1250 |
|
---|
1251 | if (*pGDTmp == 0 || *pRGDTmp == 0 || *pGDTmp == *pRGDTmp)
|
---|
1252 | {
|
---|
1253 | /* Just one grain directory entry refers to a not yet allocated
|
---|
1254 | * grain table or both grain directory copies refer to the same
|
---|
1255 | * grain table. Not allowed. */
|
---|
1256 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1257 | N_("VMDK: inconsistent references to grain directory in '%s'"), pExtent->pszFullname);
|
---|
1258 | break;
|
---|
1259 | }
|
---|
1260 |
|
---|
1261 | i++;
|
---|
1262 | pGDTmp++;
|
---|
1263 | pRGDTmp++;
|
---|
1264 |
|
---|
1265 | /*
|
---|
1266 | * Read a few tables at once if adjacent to decrease the number
|
---|
1267 | * of I/O requests. Read at maximum 1MB at once.
|
---|
1268 | */
|
---|
1269 | while ( i < pExtent->cGDEntries
|
---|
1270 | && cbGTRead < cbGTBuffersMax)
|
---|
1271 | {
|
---|
1272 | /* If no grain table is allocated skip the entry. */
|
---|
1273 | if (*pGDTmp == 0 && *pRGDTmp == 0)
|
---|
1274 | {
|
---|
1275 | i++;
|
---|
1276 | continue;
|
---|
1277 | }
|
---|
1278 |
|
---|
1279 | if (*pGDTmp == 0 || *pRGDTmp == 0 || *pGDTmp == *pRGDTmp)
|
---|
1280 | {
|
---|
1281 | /* Just one grain directory entry refers to a not yet allocated
|
---|
1282 | * grain table or both grain directory copies refer to the same
|
---|
1283 | * grain table. Not allowed. */
|
---|
1284 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1285 | N_("VMDK: inconsistent references to grain directory in '%s'"), pExtent->pszFullname);
|
---|
1286 | break;
|
---|
1287 | }
|
---|
1288 |
|
---|
1289 | /* Check that the start offsets are adjacent.*/
|
---|
1290 | if ( VMDK_SECTOR2BYTE(uGTStart) + cbGTRead != VMDK_SECTOR2BYTE(*pGDTmp)
|
---|
1291 | || VMDK_SECTOR2BYTE(uRGTStart) + cbGTRead != VMDK_SECTOR2BYTE(*pRGDTmp))
|
---|
1292 | break;
|
---|
1293 |
|
---|
1294 | i++;
|
---|
1295 | pGDTmp++;
|
---|
1296 | pRGDTmp++;
|
---|
1297 | cbGTRead += cbGT;
|
---|
1298 | }
|
---|
1299 |
|
---|
1300 | /* Increase buffers if required. */
|
---|
1301 | if ( RT_SUCCESS(rc)
|
---|
1302 | && cbGTBuffers < cbGTRead)
|
---|
1303 | {
|
---|
1304 | uint32_t *pTmp;
|
---|
1305 | pTmp = (uint32_t *)RTMemRealloc(pTmpGT1, cbGTRead);
|
---|
1306 | if (pTmp)
|
---|
1307 | {
|
---|
1308 | pTmpGT1 = pTmp;
|
---|
1309 | pTmp = (uint32_t *)RTMemRealloc(pTmpGT2, cbGTRead);
|
---|
1310 | if (pTmp)
|
---|
1311 | pTmpGT2 = pTmp;
|
---|
1312 | else
|
---|
1313 | rc = VERR_NO_MEMORY;
|
---|
1314 | }
|
---|
1315 | else
|
---|
1316 | rc = VERR_NO_MEMORY;
|
---|
1317 |
|
---|
1318 | if (rc == VERR_NO_MEMORY)
|
---|
1319 | {
|
---|
1320 | /* Reset to the old values. */
|
---|
1321 | rc = VINF_SUCCESS;
|
---|
1322 | i -= cbGTRead / cbGT;
|
---|
1323 | cbGTRead = cbGT;
|
---|
1324 |
|
---|
1325 | /* Don't try to increase the buffer again in the next run. */
|
---|
1326 | cbGTBuffersMax = cbGTBuffers;
|
---|
1327 | }
|
---|
1328 | }
|
---|
1329 |
|
---|
1330 | if (RT_SUCCESS(rc))
|
---|
1331 | {
|
---|
1332 | /* The VMDK 1.1 spec seems to talk about compressed grain tables,
|
---|
1333 | * but in reality they are not compressed. */
|
---|
1334 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1335 | VMDK_SECTOR2BYTE(uGTStart),
|
---|
1336 | pTmpGT1, cbGTRead);
|
---|
1337 | if (RT_FAILURE(rc))
|
---|
1338 | {
|
---|
1339 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1340 | N_("VMDK: error reading grain table in '%s'"), pExtent->pszFullname);
|
---|
1341 | break;
|
---|
1342 | }
|
---|
1343 | /* The VMDK 1.1 spec seems to talk about compressed grain tables,
|
---|
1344 | * but in reality they are not compressed. */
|
---|
1345 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1346 | VMDK_SECTOR2BYTE(uRGTStart),
|
---|
1347 | pTmpGT2, cbGTRead);
|
---|
1348 | if (RT_FAILURE(rc))
|
---|
1349 | {
|
---|
1350 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1351 | N_("VMDK: error reading backup grain table in '%s'"), pExtent->pszFullname);
|
---|
1352 | break;
|
---|
1353 | }
|
---|
1354 | if (memcmp(pTmpGT1, pTmpGT2, cbGTRead))
|
---|
1355 | {
|
---|
1356 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
1357 | N_("VMDK: inconsistency between grain table and backup grain table in '%s'"), pExtent->pszFullname);
|
---|
1358 | break;
|
---|
1359 | }
|
---|
1360 | }
|
---|
1361 | } /* while (i < pExtent->cGDEntries) */
|
---|
1362 |
|
---|
1363 | /** @todo figure out what to do for unclean VMDKs. */
|
---|
1364 | if (pTmpGT1)
|
---|
1365 | RTMemFree(pTmpGT1);
|
---|
1366 | if (pTmpGT2)
|
---|
1367 | RTMemFree(pTmpGT2);
|
---|
1368 | }
|
---|
1369 | else
|
---|
1370 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1371 | N_("VMDK: could not read redundant grain directory in '%s'"), pExtent->pszFullname);
|
---|
1372 | }
|
---|
1373 | }
|
---|
1374 | else
|
---|
1375 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
1376 | N_("VMDK: could not read grain directory in '%s': %Rrc"), pExtent->pszFullname, rc);
|
---|
1377 | }
|
---|
1378 |
|
---|
1379 | if (RT_FAILURE(rc))
|
---|
1380 | vmdkFreeGrainDirectory(pExtent);
|
---|
1381 | return rc;
|
---|
1382 | }
|
---|
1383 |
|
---|
1384 | /**
|
---|
1385 | * Creates a new grain directory for the given extent at the given start sector.
|
---|
1386 | *
|
---|
1387 | * @returns VBox status code.
|
---|
1388 | * @param pImage Image instance data.
|
---|
1389 | * @param pExtent The VMDK extent.
|
---|
1390 | * @param uStartSector Where the grain directory should be stored in the image.
|
---|
1391 | * @param fPreAlloc Flag whether to pre allocate the grain tables at this point.
|
---|
1392 | */
|
---|
1393 | static int vmdkCreateGrainDirectory(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
1394 | uint64_t uStartSector, bool fPreAlloc)
|
---|
1395 | {
|
---|
1396 | int rc = VINF_SUCCESS;
|
---|
1397 | unsigned i;
|
---|
1398 | size_t cbGD = pExtent->cGDEntries * sizeof(uint32_t);
|
---|
1399 | size_t cbGDRounded = RT_ALIGN_64(cbGD, 512);
|
---|
1400 | size_t cbGTRounded;
|
---|
1401 | uint64_t cbOverhead;
|
---|
1402 |
|
---|
1403 | if (fPreAlloc)
|
---|
1404 | {
|
---|
1405 | cbGTRounded = RT_ALIGN_64(pExtent->cGDEntries * pExtent->cGTEntries * sizeof(uint32_t), 512);
|
---|
1406 | cbOverhead = VMDK_SECTOR2BYTE(uStartSector) + cbGDRounded + cbGTRounded;
|
---|
1407 | }
|
---|
1408 | else
|
---|
1409 | {
|
---|
1410 | /* Use a dummy start sector for layout computation. */
|
---|
1411 | if (uStartSector == VMDK_GD_AT_END)
|
---|
1412 | uStartSector = 1;
|
---|
1413 | cbGTRounded = 0;
|
---|
1414 | cbOverhead = VMDK_SECTOR2BYTE(uStartSector) + cbGDRounded;
|
---|
1415 | }
|
---|
1416 |
|
---|
1417 | /* For streamOptimized extents there is only one grain directory,
|
---|
1418 | * and for all others take redundant grain directory into account. */
|
---|
1419 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
1420 | {
|
---|
1421 | cbOverhead = RT_ALIGN_64(cbOverhead,
|
---|
1422 | VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
1423 | }
|
---|
1424 | else
|
---|
1425 | {
|
---|
1426 | cbOverhead += cbGDRounded + cbGTRounded;
|
---|
1427 | cbOverhead = RT_ALIGN_64(cbOverhead,
|
---|
1428 | VMDK_SECTOR2BYTE(pExtent->cSectorsPerGrain));
|
---|
1429 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pExtent->pFile->pStorage, cbOverhead);
|
---|
1430 | }
|
---|
1431 |
|
---|
1432 | if (RT_SUCCESS(rc))
|
---|
1433 | {
|
---|
1434 | pExtent->uAppendPosition = cbOverhead;
|
---|
1435 | pExtent->cOverheadSectors = VMDK_BYTE2SECTOR(cbOverhead);
|
---|
1436 |
|
---|
1437 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
1438 | {
|
---|
1439 | pExtent->uSectorRGD = 0;
|
---|
1440 | pExtent->uSectorGD = uStartSector;
|
---|
1441 | }
|
---|
1442 | else
|
---|
1443 | {
|
---|
1444 | pExtent->uSectorRGD = uStartSector;
|
---|
1445 | pExtent->uSectorGD = uStartSector + VMDK_BYTE2SECTOR(cbGDRounded + cbGTRounded);
|
---|
1446 | }
|
---|
1447 |
|
---|
1448 | rc = vmdkAllocStreamBuffers(pImage, pExtent);
|
---|
1449 | if (RT_SUCCESS(rc))
|
---|
1450 | {
|
---|
1451 | rc = vmdkAllocGrainDirectory(pImage, pExtent);
|
---|
1452 | if ( RT_SUCCESS(rc)
|
---|
1453 | && fPreAlloc)
|
---|
1454 | {
|
---|
1455 | uint32_t uGTSectorLE;
|
---|
1456 | uint64_t uOffsetSectors;
|
---|
1457 |
|
---|
1458 | if (pExtent->pRGD)
|
---|
1459 | {
|
---|
1460 | uOffsetSectors = pExtent->uSectorRGD + VMDK_BYTE2SECTOR(cbGDRounded);
|
---|
1461 | for (i = 0; i < pExtent->cGDEntries; i++)
|
---|
1462 | {
|
---|
1463 | pExtent->pRGD[i] = uOffsetSectors;
|
---|
1464 | uGTSectorLE = RT_H2LE_U64(uOffsetSectors);
|
---|
1465 | /* Write the redundant grain directory entry to disk. */
|
---|
1466 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1467 | VMDK_SECTOR2BYTE(pExtent->uSectorRGD) + i * sizeof(uGTSectorLE),
|
---|
1468 | &uGTSectorLE, sizeof(uGTSectorLE));
|
---|
1469 | if (RT_FAILURE(rc))
|
---|
1470 | {
|
---|
1471 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write new redundant grain directory entry in '%s'"), pExtent->pszFullname);
|
---|
1472 | break;
|
---|
1473 | }
|
---|
1474 | uOffsetSectors += VMDK_BYTE2SECTOR(pExtent->cGTEntries * sizeof(uint32_t));
|
---|
1475 | }
|
---|
1476 | }
|
---|
1477 |
|
---|
1478 | if (RT_SUCCESS(rc))
|
---|
1479 | {
|
---|
1480 | uOffsetSectors = pExtent->uSectorGD + VMDK_BYTE2SECTOR(cbGDRounded);
|
---|
1481 | for (i = 0; i < pExtent->cGDEntries; i++)
|
---|
1482 | {
|
---|
1483 | pExtent->pGD[i] = uOffsetSectors;
|
---|
1484 | uGTSectorLE = RT_H2LE_U64(uOffsetSectors);
|
---|
1485 | /* Write the grain directory entry to disk. */
|
---|
1486 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
1487 | VMDK_SECTOR2BYTE(pExtent->uSectorGD) + i * sizeof(uGTSectorLE),
|
---|
1488 | &uGTSectorLE, sizeof(uGTSectorLE));
|
---|
1489 | if (RT_FAILURE(rc))
|
---|
1490 | {
|
---|
1491 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot write new grain directory entry in '%s'"), pExtent->pszFullname);
|
---|
1492 | break;
|
---|
1493 | }
|
---|
1494 | uOffsetSectors += VMDK_BYTE2SECTOR(pExtent->cGTEntries * sizeof(uint32_t));
|
---|
1495 | }
|
---|
1496 | }
|
---|
1497 | }
|
---|
1498 | }
|
---|
1499 | }
|
---|
1500 |
|
---|
1501 | if (RT_FAILURE(rc))
|
---|
1502 | vmdkFreeGrainDirectory(pExtent);
|
---|
1503 | return rc;
|
---|
1504 | }
|
---|
1505 |
|
---|
1506 | /**
|
---|
1507 | * Unquotes the given string returning the result in a separate buffer.
|
---|
1508 | *
|
---|
1509 | * @returns VBox status code.
|
---|
1510 | * @param pImage The VMDK image state.
|
---|
1511 | * @param pszStr The string to unquote.
|
---|
1512 | * @param ppszUnquoted Where to store the return value, use RTMemTmpFree to
|
---|
1513 | * free.
|
---|
1514 | * @param ppszNext Where to store the pointer to any character following
|
---|
1515 | * the quoted value, optional.
|
---|
1516 | */
|
---|
1517 | static int vmdkStringUnquote(PVMDKIMAGE pImage, const char *pszStr,
|
---|
1518 | char **ppszUnquoted, char **ppszNext)
|
---|
1519 | {
|
---|
1520 | const char *pszStart = pszStr;
|
---|
1521 | char *pszQ;
|
---|
1522 | char *pszUnquoted;
|
---|
1523 |
|
---|
1524 | /* Skip over whitespace. */
|
---|
1525 | while (*pszStr == ' ' || *pszStr == '\t')
|
---|
1526 | pszStr++;
|
---|
1527 |
|
---|
1528 | if (*pszStr != '"')
|
---|
1529 | {
|
---|
1530 | pszQ = (char *)pszStr;
|
---|
1531 | while (*pszQ && *pszQ != ' ' && *pszQ != '\t')
|
---|
1532 | pszQ++;
|
---|
1533 | }
|
---|
1534 | else
|
---|
1535 | {
|
---|
1536 | pszStr++;
|
---|
1537 | pszQ = (char *)strchr(pszStr, '"');
|
---|
1538 | if (pszQ == NULL)
|
---|
1539 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: incorrectly quoted value in descriptor in '%s' (raw value %s)"),
|
---|
1540 | pImage->pszFilename, pszStart);
|
---|
1541 | }
|
---|
1542 |
|
---|
1543 | pszUnquoted = (char *)RTMemTmpAlloc(pszQ - pszStr + 1);
|
---|
1544 | if (!pszUnquoted)
|
---|
1545 | return VERR_NO_MEMORY;
|
---|
1546 | memcpy(pszUnquoted, pszStr, pszQ - pszStr);
|
---|
1547 | pszUnquoted[pszQ - pszStr] = '\0';
|
---|
1548 | *ppszUnquoted = pszUnquoted;
|
---|
1549 | if (ppszNext)
|
---|
1550 | *ppszNext = pszQ + 1;
|
---|
1551 | return VINF_SUCCESS;
|
---|
1552 | }
|
---|
1553 |
|
---|
1554 | static int vmdkDescInitStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1555 | const char *pszLine)
|
---|
1556 | {
|
---|
1557 | char *pEnd = pDescriptor->aLines[pDescriptor->cLines];
|
---|
1558 | ssize_t cbDiff = strlen(pszLine) + 1;
|
---|
1559 |
|
---|
1560 | if ( pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1
|
---|
1561 | && pEnd - pDescriptor->aLines[0] > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff)
|
---|
1562 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1563 |
|
---|
1564 | memcpy(pEnd, pszLine, cbDiff);
|
---|
1565 | pDescriptor->cLines++;
|
---|
1566 | pDescriptor->aLines[pDescriptor->cLines] = pEnd + cbDiff;
|
---|
1567 | pDescriptor->fDirty = true;
|
---|
1568 |
|
---|
1569 | return VINF_SUCCESS;
|
---|
1570 | }
|
---|
1571 |
|
---|
1572 | static bool vmdkDescGetStr(PVMDKDESCRIPTOR pDescriptor, unsigned uStart,
|
---|
1573 | const char *pszKey, const char **ppszValue)
|
---|
1574 | {
|
---|
1575 | size_t cbKey = strlen(pszKey);
|
---|
1576 | const char *pszValue;
|
---|
1577 |
|
---|
1578 | while (uStart != 0)
|
---|
1579 | {
|
---|
1580 | if (!strncmp(pDescriptor->aLines[uStart], pszKey, cbKey))
|
---|
1581 | {
|
---|
1582 | /* Key matches, check for a '=' (preceded by whitespace). */
|
---|
1583 | pszValue = pDescriptor->aLines[uStart] + cbKey;
|
---|
1584 | while (*pszValue == ' ' || *pszValue == '\t')
|
---|
1585 | pszValue++;
|
---|
1586 | if (*pszValue == '=')
|
---|
1587 | {
|
---|
1588 | *ppszValue = pszValue + 1;
|
---|
1589 | break;
|
---|
1590 | }
|
---|
1591 | }
|
---|
1592 | uStart = pDescriptor->aNextLines[uStart];
|
---|
1593 | }
|
---|
1594 | return !!uStart;
|
---|
1595 | }
|
---|
1596 |
|
---|
1597 | static int vmdkDescSetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1598 | unsigned uStart,
|
---|
1599 | const char *pszKey, const char *pszValue)
|
---|
1600 | {
|
---|
1601 | char *pszTmp = NULL; /* (MSC naturally cannot figure this isn't used uninitialized) */
|
---|
1602 | size_t cbKey = strlen(pszKey);
|
---|
1603 | unsigned uLast = 0;
|
---|
1604 |
|
---|
1605 | while (uStart != 0)
|
---|
1606 | {
|
---|
1607 | if (!strncmp(pDescriptor->aLines[uStart], pszKey, cbKey))
|
---|
1608 | {
|
---|
1609 | /* Key matches, check for a '=' (preceded by whitespace). */
|
---|
1610 | pszTmp = pDescriptor->aLines[uStart] + cbKey;
|
---|
1611 | while (*pszTmp == ' ' || *pszTmp == '\t')
|
---|
1612 | pszTmp++;
|
---|
1613 | if (*pszTmp == '=')
|
---|
1614 | {
|
---|
1615 | pszTmp++;
|
---|
1616 | /** @todo r=bird: Doesn't skipping trailing blanks here just cause unecessary
|
---|
1617 | * bloat and potentially out of space error? */
|
---|
1618 | while (*pszTmp == ' ' || *pszTmp == '\t')
|
---|
1619 | pszTmp++;
|
---|
1620 | break;
|
---|
1621 | }
|
---|
1622 | }
|
---|
1623 | if (!pDescriptor->aNextLines[uStart])
|
---|
1624 | uLast = uStart;
|
---|
1625 | uStart = pDescriptor->aNextLines[uStart];
|
---|
1626 | }
|
---|
1627 | if (uStart)
|
---|
1628 | {
|
---|
1629 | if (pszValue)
|
---|
1630 | {
|
---|
1631 | /* Key already exists, replace existing value. */
|
---|
1632 | size_t cbOldVal = strlen(pszTmp);
|
---|
1633 | size_t cbNewVal = strlen(pszValue);
|
---|
1634 | ssize_t cbDiff = cbNewVal - cbOldVal;
|
---|
1635 | /* Check for buffer overflow. */
|
---|
1636 | if ( pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[0]
|
---|
1637 | > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff)
|
---|
1638 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1639 |
|
---|
1640 | memmove(pszTmp + cbNewVal, pszTmp + cbOldVal,
|
---|
1641 | pDescriptor->aLines[pDescriptor->cLines] - pszTmp - cbOldVal);
|
---|
1642 | memcpy(pszTmp, pszValue, cbNewVal + 1);
|
---|
1643 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1644 | pDescriptor->aLines[i] += cbDiff;
|
---|
1645 | }
|
---|
1646 | else
|
---|
1647 | {
|
---|
1648 | memmove(pDescriptor->aLines[uStart], pDescriptor->aLines[uStart+1],
|
---|
1649 | pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[uStart+1] + 1);
|
---|
1650 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1651 | {
|
---|
1652 | pDescriptor->aLines[i-1] = pDescriptor->aLines[i];
|
---|
1653 | if (pDescriptor->aNextLines[i])
|
---|
1654 | pDescriptor->aNextLines[i-1] = pDescriptor->aNextLines[i] - 1;
|
---|
1655 | else
|
---|
1656 | pDescriptor->aNextLines[i-1] = 0;
|
---|
1657 | }
|
---|
1658 | pDescriptor->cLines--;
|
---|
1659 | /* Adjust starting line numbers of following descriptor sections. */
|
---|
1660 | if (uStart < pDescriptor->uFirstExtent)
|
---|
1661 | pDescriptor->uFirstExtent--;
|
---|
1662 | if (uStart < pDescriptor->uFirstDDB)
|
---|
1663 | pDescriptor->uFirstDDB--;
|
---|
1664 | }
|
---|
1665 | }
|
---|
1666 | else
|
---|
1667 | {
|
---|
1668 | /* Key doesn't exist, append after the last entry in this category. */
|
---|
1669 | if (!pszValue)
|
---|
1670 | {
|
---|
1671 | /* Key doesn't exist, and it should be removed. Simply a no-op. */
|
---|
1672 | return VINF_SUCCESS;
|
---|
1673 | }
|
---|
1674 | cbKey = strlen(pszKey);
|
---|
1675 | size_t cbValue = strlen(pszValue);
|
---|
1676 | ssize_t cbDiff = cbKey + 1 + cbValue + 1;
|
---|
1677 | /* Check for buffer overflow. */
|
---|
1678 | if ( (pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1)
|
---|
1679 | || ( pDescriptor->aLines[pDescriptor->cLines]
|
---|
1680 | - pDescriptor->aLines[0] > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff))
|
---|
1681 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1682 | for (unsigned i = pDescriptor->cLines + 1; i > uLast + 1; i--)
|
---|
1683 | {
|
---|
1684 | pDescriptor->aLines[i] = pDescriptor->aLines[i - 1];
|
---|
1685 | if (pDescriptor->aNextLines[i - 1])
|
---|
1686 | pDescriptor->aNextLines[i] = pDescriptor->aNextLines[i - 1] + 1;
|
---|
1687 | else
|
---|
1688 | pDescriptor->aNextLines[i] = 0;
|
---|
1689 | }
|
---|
1690 | uStart = uLast + 1;
|
---|
1691 | pDescriptor->aNextLines[uLast] = uStart;
|
---|
1692 | pDescriptor->aNextLines[uStart] = 0;
|
---|
1693 | pDescriptor->cLines++;
|
---|
1694 | pszTmp = pDescriptor->aLines[uStart];
|
---|
1695 | memmove(pszTmp + cbDiff, pszTmp,
|
---|
1696 | pDescriptor->aLines[pDescriptor->cLines] - pszTmp);
|
---|
1697 | memcpy(pDescriptor->aLines[uStart], pszKey, cbKey);
|
---|
1698 | pDescriptor->aLines[uStart][cbKey] = '=';
|
---|
1699 | memcpy(pDescriptor->aLines[uStart] + cbKey + 1, pszValue, cbValue + 1);
|
---|
1700 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1701 | pDescriptor->aLines[i] += cbDiff;
|
---|
1702 |
|
---|
1703 | /* Adjust starting line numbers of following descriptor sections. */
|
---|
1704 | if (uStart <= pDescriptor->uFirstExtent)
|
---|
1705 | pDescriptor->uFirstExtent++;
|
---|
1706 | if (uStart <= pDescriptor->uFirstDDB)
|
---|
1707 | pDescriptor->uFirstDDB++;
|
---|
1708 | }
|
---|
1709 | pDescriptor->fDirty = true;
|
---|
1710 | return VINF_SUCCESS;
|
---|
1711 | }
|
---|
1712 |
|
---|
1713 | static int vmdkDescBaseGetU32(PVMDKDESCRIPTOR pDescriptor, const char *pszKey,
|
---|
1714 | uint32_t *puValue)
|
---|
1715 | {
|
---|
1716 | const char *pszValue;
|
---|
1717 |
|
---|
1718 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDesc, pszKey,
|
---|
1719 | &pszValue))
|
---|
1720 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1721 | return RTStrToUInt32Ex(pszValue, NULL, 10, puValue);
|
---|
1722 | }
|
---|
1723 |
|
---|
1724 | /**
|
---|
1725 | * Returns the value of the given key as a string allocating the necessary memory.
|
---|
1726 | *
|
---|
1727 | * @returns VBox status code.
|
---|
1728 | * @retval VERR_VD_VMDK_VALUE_NOT_FOUND if the value could not be found.
|
---|
1729 | * @param pImage The VMDK image state.
|
---|
1730 | * @param pDescriptor The descriptor to fetch the value from.
|
---|
1731 | * @param pszKey The key to get the value from.
|
---|
1732 | * @param ppszValue Where to store the return value, use RTMemTmpFree to
|
---|
1733 | * free.
|
---|
1734 | */
|
---|
1735 | static int vmdkDescBaseGetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1736 | const char *pszKey, char **ppszValue)
|
---|
1737 | {
|
---|
1738 | const char *pszValue;
|
---|
1739 | char *pszValueUnquoted;
|
---|
1740 |
|
---|
1741 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDesc, pszKey,
|
---|
1742 | &pszValue))
|
---|
1743 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1744 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1745 | if (RT_FAILURE(rc))
|
---|
1746 | return rc;
|
---|
1747 | *ppszValue = pszValueUnquoted;
|
---|
1748 | return rc;
|
---|
1749 | }
|
---|
1750 |
|
---|
1751 | static int vmdkDescBaseSetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1752 | const char *pszKey, const char *pszValue)
|
---|
1753 | {
|
---|
1754 | char *pszValueQuoted;
|
---|
1755 |
|
---|
1756 | RTStrAPrintf(&pszValueQuoted, "\"%s\"", pszValue);
|
---|
1757 | if (!pszValueQuoted)
|
---|
1758 | return VERR_NO_STR_MEMORY;
|
---|
1759 | int rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDesc, pszKey,
|
---|
1760 | pszValueQuoted);
|
---|
1761 | RTStrFree(pszValueQuoted);
|
---|
1762 | return rc;
|
---|
1763 | }
|
---|
1764 |
|
---|
1765 | static void vmdkDescExtRemoveDummy(PVMDKIMAGE pImage,
|
---|
1766 | PVMDKDESCRIPTOR pDescriptor)
|
---|
1767 | {
|
---|
1768 | RT_NOREF1(pImage);
|
---|
1769 | unsigned uEntry = pDescriptor->uFirstExtent;
|
---|
1770 | ssize_t cbDiff;
|
---|
1771 |
|
---|
1772 | if (!uEntry)
|
---|
1773 | return;
|
---|
1774 |
|
---|
1775 | cbDiff = strlen(pDescriptor->aLines[uEntry]) + 1;
|
---|
1776 | /* Move everything including \0 in the entry marking the end of buffer. */
|
---|
1777 | memmove(pDescriptor->aLines[uEntry], pDescriptor->aLines[uEntry + 1],
|
---|
1778 | pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[uEntry + 1] + 1);
|
---|
1779 | for (unsigned i = uEntry + 1; i <= pDescriptor->cLines; i++)
|
---|
1780 | {
|
---|
1781 | pDescriptor->aLines[i - 1] = pDescriptor->aLines[i] - cbDiff;
|
---|
1782 | if (pDescriptor->aNextLines[i])
|
---|
1783 | pDescriptor->aNextLines[i - 1] = pDescriptor->aNextLines[i] - 1;
|
---|
1784 | else
|
---|
1785 | pDescriptor->aNextLines[i - 1] = 0;
|
---|
1786 | }
|
---|
1787 | pDescriptor->cLines--;
|
---|
1788 | if (pDescriptor->uFirstDDB)
|
---|
1789 | pDescriptor->uFirstDDB--;
|
---|
1790 |
|
---|
1791 | return;
|
---|
1792 | }
|
---|
1793 |
|
---|
1794 | static void vmdkDescExtRemoveByLine(PVMDKIMAGE pImage,
|
---|
1795 | PVMDKDESCRIPTOR pDescriptor, unsigned uLine)
|
---|
1796 | {
|
---|
1797 | RT_NOREF1(pImage);
|
---|
1798 | unsigned uEntry = uLine;
|
---|
1799 | ssize_t cbDiff;
|
---|
1800 | if (!uEntry)
|
---|
1801 | return;
|
---|
1802 | cbDiff = strlen(pDescriptor->aLines[uEntry]) + 1;
|
---|
1803 | /* Move everything including \0 in the entry marking the end of buffer. */
|
---|
1804 | memmove(pDescriptor->aLines[uEntry], pDescriptor->aLines[uEntry + 1],
|
---|
1805 | pDescriptor->aLines[pDescriptor->cLines] - pDescriptor->aLines[uEntry + 1] + 1);
|
---|
1806 | for (unsigned i = uEntry; i <= pDescriptor->cLines; i++)
|
---|
1807 | {
|
---|
1808 | if (i != uEntry)
|
---|
1809 | pDescriptor->aLines[i - 1] = pDescriptor->aLines[i] - cbDiff;
|
---|
1810 | if (pDescriptor->aNextLines[i])
|
---|
1811 | pDescriptor->aNextLines[i - 1] = pDescriptor->aNextLines[i] - 1;
|
---|
1812 | else
|
---|
1813 | pDescriptor->aNextLines[i - 1] = 0;
|
---|
1814 | }
|
---|
1815 | pDescriptor->cLines--;
|
---|
1816 | if (pDescriptor->uFirstDDB)
|
---|
1817 | pDescriptor->uFirstDDB--;
|
---|
1818 | return;
|
---|
1819 | }
|
---|
1820 |
|
---|
1821 | static int vmdkDescExtInsert(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1822 | VMDKACCESS enmAccess, uint64_t cNominalSectors,
|
---|
1823 | VMDKETYPE enmType, const char *pszBasename,
|
---|
1824 | uint64_t uSectorOffset)
|
---|
1825 | {
|
---|
1826 | static const char *apszAccess[] = { "NOACCESS", "RDONLY", "RW" };
|
---|
1827 | static const char *apszType[] = { "", "SPARSE", "FLAT", "ZERO", "VMFS" };
|
---|
1828 | char *pszTmp;
|
---|
1829 | unsigned uStart = pDescriptor->uFirstExtent, uLast = 0;
|
---|
1830 | char szExt[1024];
|
---|
1831 | ssize_t cbDiff;
|
---|
1832 |
|
---|
1833 | Assert((unsigned)enmAccess < RT_ELEMENTS(apszAccess));
|
---|
1834 | Assert((unsigned)enmType < RT_ELEMENTS(apszType));
|
---|
1835 |
|
---|
1836 | /* Find last entry in extent description. */
|
---|
1837 | while (uStart)
|
---|
1838 | {
|
---|
1839 | if (!pDescriptor->aNextLines[uStart])
|
---|
1840 | uLast = uStart;
|
---|
1841 | uStart = pDescriptor->aNextLines[uStart];
|
---|
1842 | }
|
---|
1843 |
|
---|
1844 | if (enmType == VMDKETYPE_ZERO)
|
---|
1845 | {
|
---|
1846 | RTStrPrintf(szExt, sizeof(szExt), "%s %llu %s ", apszAccess[enmAccess],
|
---|
1847 | cNominalSectors, apszType[enmType]);
|
---|
1848 | }
|
---|
1849 | else if (enmType == VMDKETYPE_FLAT)
|
---|
1850 | {
|
---|
1851 | RTStrPrintf(szExt, sizeof(szExt), "%s %llu %s \"%s\" %llu",
|
---|
1852 | apszAccess[enmAccess], cNominalSectors,
|
---|
1853 | apszType[enmType], pszBasename, uSectorOffset);
|
---|
1854 | }
|
---|
1855 | else
|
---|
1856 | {
|
---|
1857 | RTStrPrintf(szExt, sizeof(szExt), "%s %llu %s \"%s\"",
|
---|
1858 | apszAccess[enmAccess], cNominalSectors,
|
---|
1859 | apszType[enmType], pszBasename);
|
---|
1860 | }
|
---|
1861 | cbDiff = strlen(szExt) + 1;
|
---|
1862 |
|
---|
1863 | /* Check for buffer overflow. */
|
---|
1864 | if ( (pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1)
|
---|
1865 | || ( pDescriptor->aLines[pDescriptor->cLines]
|
---|
1866 | - pDescriptor->aLines[0] > (ptrdiff_t)pDescriptor->cbDescAlloc - cbDiff))
|
---|
1867 | {
|
---|
1868 | if ((pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_SPLIT_2G)
|
---|
1869 | && !(pDescriptor->cLines >= VMDK_DESCRIPTOR_LINES_MAX - 1))
|
---|
1870 | {
|
---|
1871 | pImage->cbDescAlloc *= 2;
|
---|
1872 | pDescriptor->cbDescAlloc *= 2;
|
---|
1873 | }
|
---|
1874 | else
|
---|
1875 | return vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
1876 | }
|
---|
1877 |
|
---|
1878 | for (unsigned i = pDescriptor->cLines + 1; i > uLast + 1; i--)
|
---|
1879 | {
|
---|
1880 | pDescriptor->aLines[i] = pDescriptor->aLines[i - 1];
|
---|
1881 | if (pDescriptor->aNextLines[i - 1])
|
---|
1882 | pDescriptor->aNextLines[i] = pDescriptor->aNextLines[i - 1] + 1;
|
---|
1883 | else
|
---|
1884 | pDescriptor->aNextLines[i] = 0;
|
---|
1885 | }
|
---|
1886 | uStart = uLast + 1;
|
---|
1887 | pDescriptor->aNextLines[uLast] = uStart;
|
---|
1888 | pDescriptor->aNextLines[uStart] = 0;
|
---|
1889 | pDescriptor->cLines++;
|
---|
1890 | pszTmp = pDescriptor->aLines[uStart];
|
---|
1891 | memmove(pszTmp + cbDiff, pszTmp,
|
---|
1892 | pDescriptor->aLines[pDescriptor->cLines] - pszTmp);
|
---|
1893 | memcpy(pDescriptor->aLines[uStart], szExt, cbDiff);
|
---|
1894 | for (unsigned i = uStart + 1; i <= pDescriptor->cLines; i++)
|
---|
1895 | pDescriptor->aLines[i] += cbDiff;
|
---|
1896 |
|
---|
1897 | /* Adjust starting line numbers of following descriptor sections. */
|
---|
1898 | if (uStart <= pDescriptor->uFirstDDB)
|
---|
1899 | pDescriptor->uFirstDDB++;
|
---|
1900 |
|
---|
1901 | pDescriptor->fDirty = true;
|
---|
1902 | return VINF_SUCCESS;
|
---|
1903 | }
|
---|
1904 |
|
---|
1905 | /**
|
---|
1906 | * Returns the value of the given key from the DDB as a string allocating
|
---|
1907 | * the necessary memory.
|
---|
1908 | *
|
---|
1909 | * @returns VBox status code.
|
---|
1910 | * @retval VERR_VD_VMDK_VALUE_NOT_FOUND if the value could not be found.
|
---|
1911 | * @param pImage The VMDK image state.
|
---|
1912 | * @param pDescriptor The descriptor to fetch the value from.
|
---|
1913 | * @param pszKey The key to get the value from.
|
---|
1914 | * @param ppszValue Where to store the return value, use RTMemTmpFree to
|
---|
1915 | * free.
|
---|
1916 | */
|
---|
1917 | static int vmdkDescDDBGetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1918 | const char *pszKey, char **ppszValue)
|
---|
1919 | {
|
---|
1920 | const char *pszValue;
|
---|
1921 | char *pszValueUnquoted;
|
---|
1922 |
|
---|
1923 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1924 | &pszValue))
|
---|
1925 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1926 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1927 | if (RT_FAILURE(rc))
|
---|
1928 | return rc;
|
---|
1929 | *ppszValue = pszValueUnquoted;
|
---|
1930 | return rc;
|
---|
1931 | }
|
---|
1932 |
|
---|
1933 | static int vmdkDescDDBGetU32(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1934 | const char *pszKey, uint32_t *puValue)
|
---|
1935 | {
|
---|
1936 | const char *pszValue;
|
---|
1937 | char *pszValueUnquoted;
|
---|
1938 |
|
---|
1939 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1940 | &pszValue))
|
---|
1941 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1942 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1943 | if (RT_FAILURE(rc))
|
---|
1944 | return rc;
|
---|
1945 | rc = RTStrToUInt32Ex(pszValueUnquoted, NULL, 10, puValue);
|
---|
1946 | RTMemTmpFree(pszValueUnquoted);
|
---|
1947 | return rc;
|
---|
1948 | }
|
---|
1949 |
|
---|
1950 | static int vmdkDescDDBGetUuid(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1951 | const char *pszKey, PRTUUID pUuid)
|
---|
1952 | {
|
---|
1953 | const char *pszValue;
|
---|
1954 | char *pszValueUnquoted;
|
---|
1955 |
|
---|
1956 | if (!vmdkDescGetStr(pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1957 | &pszValue))
|
---|
1958 | return VERR_VD_VMDK_VALUE_NOT_FOUND;
|
---|
1959 | int rc = vmdkStringUnquote(pImage, pszValue, &pszValueUnquoted, NULL);
|
---|
1960 | if (RT_FAILURE(rc))
|
---|
1961 | return rc;
|
---|
1962 | rc = RTUuidFromStr(pUuid, pszValueUnquoted);
|
---|
1963 | RTMemTmpFree(pszValueUnquoted);
|
---|
1964 | return rc;
|
---|
1965 | }
|
---|
1966 |
|
---|
1967 | static int vmdkDescDDBSetStr(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1968 | const char *pszKey, const char *pszVal)
|
---|
1969 | {
|
---|
1970 | int rc;
|
---|
1971 | char *pszValQuoted;
|
---|
1972 |
|
---|
1973 | if (pszVal)
|
---|
1974 | {
|
---|
1975 | RTStrAPrintf(&pszValQuoted, "\"%s\"", pszVal);
|
---|
1976 | if (!pszValQuoted)
|
---|
1977 | return VERR_NO_STR_MEMORY;
|
---|
1978 | }
|
---|
1979 | else
|
---|
1980 | pszValQuoted = NULL;
|
---|
1981 | rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1982 | pszValQuoted);
|
---|
1983 | if (pszValQuoted)
|
---|
1984 | RTStrFree(pszValQuoted);
|
---|
1985 | return rc;
|
---|
1986 | }
|
---|
1987 |
|
---|
1988 | static int vmdkDescDDBSetUuid(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
1989 | const char *pszKey, PCRTUUID pUuid)
|
---|
1990 | {
|
---|
1991 | char *pszUuid;
|
---|
1992 |
|
---|
1993 | RTStrAPrintf(&pszUuid, "\"%RTuuid\"", pUuid);
|
---|
1994 | if (!pszUuid)
|
---|
1995 | return VERR_NO_STR_MEMORY;
|
---|
1996 | int rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
1997 | pszUuid);
|
---|
1998 | RTStrFree(pszUuid);
|
---|
1999 | return rc;
|
---|
2000 | }
|
---|
2001 |
|
---|
2002 | static int vmdkDescDDBSetU32(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDescriptor,
|
---|
2003 | const char *pszKey, uint32_t uValue)
|
---|
2004 | {
|
---|
2005 | char *pszValue;
|
---|
2006 |
|
---|
2007 | RTStrAPrintf(&pszValue, "\"%d\"", uValue);
|
---|
2008 | if (!pszValue)
|
---|
2009 | return VERR_NO_STR_MEMORY;
|
---|
2010 | int rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDDB, pszKey,
|
---|
2011 | pszValue);
|
---|
2012 | RTStrFree(pszValue);
|
---|
2013 | return rc;
|
---|
2014 | }
|
---|
2015 |
|
---|
2016 | /**
|
---|
2017 | * Splits the descriptor data into individual lines checking for correct line
|
---|
2018 | * endings and descriptor size.
|
---|
2019 | *
|
---|
2020 | * @returns VBox status code.
|
---|
2021 | * @param pImage The image instance.
|
---|
2022 | * @param pDesc The descriptor.
|
---|
2023 | * @param pszTmp The raw descriptor data from the image.
|
---|
2024 | */
|
---|
2025 | static int vmdkDescSplitLines(PVMDKIMAGE pImage, PVMDKDESCRIPTOR pDesc, char *pszTmp)
|
---|
2026 | {
|
---|
2027 | unsigned cLine = 0;
|
---|
2028 | int rc = VINF_SUCCESS;
|
---|
2029 |
|
---|
2030 | while ( RT_SUCCESS(rc)
|
---|
2031 | && *pszTmp != '\0')
|
---|
2032 | {
|
---|
2033 | pDesc->aLines[cLine++] = pszTmp;
|
---|
2034 | if (cLine >= VMDK_DESCRIPTOR_LINES_MAX)
|
---|
2035 | {
|
---|
2036 | vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: descriptor too big in '%s'"), pImage->pszFilename);
|
---|
2037 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
2038 | break;
|
---|
2039 | }
|
---|
2040 |
|
---|
2041 | while (*pszTmp != '\0' && *pszTmp != '\n')
|
---|
2042 | {
|
---|
2043 | if (*pszTmp == '\r')
|
---|
2044 | {
|
---|
2045 | if (*(pszTmp + 1) != '\n')
|
---|
2046 | {
|
---|
2047 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: unsupported end of line in descriptor in '%s'"), pImage->pszFilename);
|
---|
2048 | break;
|
---|
2049 | }
|
---|
2050 | else
|
---|
2051 | {
|
---|
2052 | /* Get rid of CR character. */
|
---|
2053 | *pszTmp = '\0';
|
---|
2054 | }
|
---|
2055 | }
|
---|
2056 | pszTmp++;
|
---|
2057 | }
|
---|
2058 |
|
---|
2059 | if (RT_FAILURE(rc))
|
---|
2060 | break;
|
---|
2061 |
|
---|
2062 | /* Get rid of LF character. */
|
---|
2063 | if (*pszTmp == '\n')
|
---|
2064 | {
|
---|
2065 | *pszTmp = '\0';
|
---|
2066 | pszTmp++;
|
---|
2067 | }
|
---|
2068 | }
|
---|
2069 |
|
---|
2070 | if (RT_SUCCESS(rc))
|
---|
2071 | {
|
---|
2072 | pDesc->cLines = cLine;
|
---|
2073 | /* Pointer right after the end of the used part of the buffer. */
|
---|
2074 | pDesc->aLines[cLine] = pszTmp;
|
---|
2075 | }
|
---|
2076 |
|
---|
2077 | return rc;
|
---|
2078 | }
|
---|
2079 |
|
---|
2080 | static int vmdkPreprocessDescriptor(PVMDKIMAGE pImage, char *pDescData,
|
---|
2081 | size_t cbDescData, PVMDKDESCRIPTOR pDescriptor)
|
---|
2082 | {
|
---|
2083 | pDescriptor->cbDescAlloc = cbDescData;
|
---|
2084 | int rc = vmdkDescSplitLines(pImage, pDescriptor, pDescData);
|
---|
2085 | if (RT_SUCCESS(rc))
|
---|
2086 | {
|
---|
2087 | if ( strcmp(pDescriptor->aLines[0], "# Disk DescriptorFile")
|
---|
2088 | && strcmp(pDescriptor->aLines[0], "# Disk Descriptor File")
|
---|
2089 | && strcmp(pDescriptor->aLines[0], "#Disk Descriptor File")
|
---|
2090 | && strcmp(pDescriptor->aLines[0], "#Disk DescriptorFile"))
|
---|
2091 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2092 | N_("VMDK: descriptor does not start as expected in '%s'"), pImage->pszFilename);
|
---|
2093 | else
|
---|
2094 | {
|
---|
2095 | unsigned uLastNonEmptyLine = 0;
|
---|
2096 |
|
---|
2097 | /* Initialize those, because we need to be able to reopen an image. */
|
---|
2098 | pDescriptor->uFirstDesc = 0;
|
---|
2099 | pDescriptor->uFirstExtent = 0;
|
---|
2100 | pDescriptor->uFirstDDB = 0;
|
---|
2101 | for (unsigned i = 0; i < pDescriptor->cLines; i++)
|
---|
2102 | {
|
---|
2103 | if (*pDescriptor->aLines[i] != '#' && *pDescriptor->aLines[i] != '\0')
|
---|
2104 | {
|
---|
2105 | if ( !strncmp(pDescriptor->aLines[i], "RW", 2)
|
---|
2106 | || !strncmp(pDescriptor->aLines[i], "RDONLY", 6)
|
---|
2107 | || !strncmp(pDescriptor->aLines[i], "NOACCESS", 8) )
|
---|
2108 | {
|
---|
2109 | /* An extent descriptor. */
|
---|
2110 | if (!pDescriptor->uFirstDesc || pDescriptor->uFirstDDB)
|
---|
2111 | {
|
---|
2112 | /* Incorrect ordering of entries. */
|
---|
2113 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2114 | N_("VMDK: incorrect ordering of entries in descriptor in '%s'"), pImage->pszFilename);
|
---|
2115 | break;
|
---|
2116 | }
|
---|
2117 | if (!pDescriptor->uFirstExtent)
|
---|
2118 | {
|
---|
2119 | pDescriptor->uFirstExtent = i;
|
---|
2120 | uLastNonEmptyLine = 0;
|
---|
2121 | }
|
---|
2122 | }
|
---|
2123 | else if (!strncmp(pDescriptor->aLines[i], "ddb.", 4))
|
---|
2124 | {
|
---|
2125 | /* A disk database entry. */
|
---|
2126 | if (!pDescriptor->uFirstDesc || !pDescriptor->uFirstExtent)
|
---|
2127 | {
|
---|
2128 | /* Incorrect ordering of entries. */
|
---|
2129 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2130 | N_("VMDK: incorrect ordering of entries in descriptor in '%s'"), pImage->pszFilename);
|
---|
2131 | break;
|
---|
2132 | }
|
---|
2133 | if (!pDescriptor->uFirstDDB)
|
---|
2134 | {
|
---|
2135 | pDescriptor->uFirstDDB = i;
|
---|
2136 | uLastNonEmptyLine = 0;
|
---|
2137 | }
|
---|
2138 | }
|
---|
2139 | else
|
---|
2140 | {
|
---|
2141 | /* A normal entry. */
|
---|
2142 | if (pDescriptor->uFirstExtent || pDescriptor->uFirstDDB)
|
---|
2143 | {
|
---|
2144 | /* Incorrect ordering of entries. */
|
---|
2145 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2146 | N_("VMDK: incorrect ordering of entries in descriptor in '%s'"), pImage->pszFilename);
|
---|
2147 | break;
|
---|
2148 | }
|
---|
2149 | if (!pDescriptor->uFirstDesc)
|
---|
2150 | {
|
---|
2151 | pDescriptor->uFirstDesc = i;
|
---|
2152 | uLastNonEmptyLine = 0;
|
---|
2153 | }
|
---|
2154 | }
|
---|
2155 | if (uLastNonEmptyLine)
|
---|
2156 | pDescriptor->aNextLines[uLastNonEmptyLine] = i;
|
---|
2157 | uLastNonEmptyLine = i;
|
---|
2158 | }
|
---|
2159 | }
|
---|
2160 | }
|
---|
2161 | }
|
---|
2162 |
|
---|
2163 | return rc;
|
---|
2164 | }
|
---|
2165 |
|
---|
2166 | static int vmdkDescSetPCHSGeometry(PVMDKIMAGE pImage,
|
---|
2167 | PCVDGEOMETRY pPCHSGeometry)
|
---|
2168 | {
|
---|
2169 | int rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2170 | VMDK_DDB_GEO_PCHS_CYLINDERS,
|
---|
2171 | pPCHSGeometry->cCylinders);
|
---|
2172 | if (RT_FAILURE(rc))
|
---|
2173 | return rc;
|
---|
2174 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2175 | VMDK_DDB_GEO_PCHS_HEADS,
|
---|
2176 | pPCHSGeometry->cHeads);
|
---|
2177 | if (RT_FAILURE(rc))
|
---|
2178 | return rc;
|
---|
2179 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2180 | VMDK_DDB_GEO_PCHS_SECTORS,
|
---|
2181 | pPCHSGeometry->cSectors);
|
---|
2182 | return rc;
|
---|
2183 | }
|
---|
2184 |
|
---|
2185 | static int vmdkDescSetLCHSGeometry(PVMDKIMAGE pImage,
|
---|
2186 | PCVDGEOMETRY pLCHSGeometry)
|
---|
2187 | {
|
---|
2188 | int rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2189 | VMDK_DDB_GEO_LCHS_CYLINDERS,
|
---|
2190 | pLCHSGeometry->cCylinders);
|
---|
2191 | if (RT_FAILURE(rc))
|
---|
2192 | return rc;
|
---|
2193 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2194 | VMDK_DDB_GEO_LCHS_HEADS,
|
---|
2195 |
|
---|
2196 | pLCHSGeometry->cHeads);
|
---|
2197 | if (RT_FAILURE(rc))
|
---|
2198 | return rc;
|
---|
2199 | rc = vmdkDescDDBSetU32(pImage, &pImage->Descriptor,
|
---|
2200 | VMDK_DDB_GEO_LCHS_SECTORS,
|
---|
2201 | pLCHSGeometry->cSectors);
|
---|
2202 | return rc;
|
---|
2203 | }
|
---|
2204 |
|
---|
2205 | static int vmdkCreateDescriptor(PVMDKIMAGE pImage, char *pDescData,
|
---|
2206 | size_t cbDescData, PVMDKDESCRIPTOR pDescriptor)
|
---|
2207 | {
|
---|
2208 | pDescriptor->uFirstDesc = 0;
|
---|
2209 | pDescriptor->uFirstExtent = 0;
|
---|
2210 | pDescriptor->uFirstDDB = 0;
|
---|
2211 | pDescriptor->cLines = 0;
|
---|
2212 | pDescriptor->cbDescAlloc = cbDescData;
|
---|
2213 | pDescriptor->fDirty = false;
|
---|
2214 | pDescriptor->aLines[pDescriptor->cLines] = pDescData;
|
---|
2215 | memset(pDescriptor->aNextLines, '\0', sizeof(pDescriptor->aNextLines));
|
---|
2216 |
|
---|
2217 | int rc = vmdkDescInitStr(pImage, pDescriptor, "# Disk DescriptorFile");
|
---|
2218 | if (RT_SUCCESS(rc))
|
---|
2219 | rc = vmdkDescInitStr(pImage, pDescriptor, "version=1");
|
---|
2220 | if (RT_SUCCESS(rc))
|
---|
2221 | {
|
---|
2222 | pDescriptor->uFirstDesc = pDescriptor->cLines - 1;
|
---|
2223 | rc = vmdkDescInitStr(pImage, pDescriptor, "");
|
---|
2224 | }
|
---|
2225 | if (RT_SUCCESS(rc))
|
---|
2226 | rc = vmdkDescInitStr(pImage, pDescriptor, "# Extent description");
|
---|
2227 | if (RT_SUCCESS(rc))
|
---|
2228 | rc = vmdkDescInitStr(pImage, pDescriptor, "NOACCESS 0 ZERO ");
|
---|
2229 | if (RT_SUCCESS(rc))
|
---|
2230 | {
|
---|
2231 | pDescriptor->uFirstExtent = pDescriptor->cLines - 1;
|
---|
2232 | rc = vmdkDescInitStr(pImage, pDescriptor, "");
|
---|
2233 | }
|
---|
2234 | if (RT_SUCCESS(rc))
|
---|
2235 | {
|
---|
2236 | /* The trailing space is created by VMware, too. */
|
---|
2237 | rc = vmdkDescInitStr(pImage, pDescriptor, "# The disk Data Base ");
|
---|
2238 | }
|
---|
2239 | if (RT_SUCCESS(rc))
|
---|
2240 | rc = vmdkDescInitStr(pImage, pDescriptor, "#DDB");
|
---|
2241 | if (RT_SUCCESS(rc))
|
---|
2242 | rc = vmdkDescInitStr(pImage, pDescriptor, "");
|
---|
2243 | if (RT_SUCCESS(rc))
|
---|
2244 | rc = vmdkDescInitStr(pImage, pDescriptor, "ddb.virtualHWVersion = \"4\"");
|
---|
2245 | if (RT_SUCCESS(rc))
|
---|
2246 | {
|
---|
2247 | pDescriptor->uFirstDDB = pDescriptor->cLines - 1;
|
---|
2248 |
|
---|
2249 | /* Now that the framework is in place, use the normal functions to insert
|
---|
2250 | * the remaining keys. */
|
---|
2251 | char szBuf[9];
|
---|
2252 | RTStrPrintf(szBuf, sizeof(szBuf), "%08x", RTRandU32());
|
---|
2253 | rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDesc,
|
---|
2254 | "CID", szBuf);
|
---|
2255 | }
|
---|
2256 | if (RT_SUCCESS(rc))
|
---|
2257 | rc = vmdkDescSetStr(pImage, pDescriptor, pDescriptor->uFirstDesc,
|
---|
2258 | "parentCID", "ffffffff");
|
---|
2259 | if (RT_SUCCESS(rc))
|
---|
2260 | rc = vmdkDescDDBSetStr(pImage, pDescriptor, "ddb.adapterType", "ide");
|
---|
2261 |
|
---|
2262 | return rc;
|
---|
2263 | }
|
---|
2264 |
|
---|
2265 | static int vmdkParseDescriptor(PVMDKIMAGE pImage, char *pDescData, size_t cbDescData)
|
---|
2266 | {
|
---|
2267 | int rc;
|
---|
2268 | unsigned cExtents;
|
---|
2269 | unsigned uLine;
|
---|
2270 | unsigned i;
|
---|
2271 |
|
---|
2272 | rc = vmdkPreprocessDescriptor(pImage, pDescData, cbDescData,
|
---|
2273 | &pImage->Descriptor);
|
---|
2274 | if (RT_FAILURE(rc))
|
---|
2275 | return rc;
|
---|
2276 |
|
---|
2277 | /* Check version, must be 1. */
|
---|
2278 | uint32_t uVersion;
|
---|
2279 | rc = vmdkDescBaseGetU32(&pImage->Descriptor, "version", &uVersion);
|
---|
2280 | if (RT_FAILURE(rc))
|
---|
2281 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error finding key 'version' in descriptor in '%s'"), pImage->pszFilename);
|
---|
2282 | if (uVersion != 1)
|
---|
2283 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_UNSUPPORTED_VERSION, RT_SRC_POS, N_("VMDK: unsupported format version in descriptor in '%s'"), pImage->pszFilename);
|
---|
2284 |
|
---|
2285 | /* Get image creation type and determine image flags. */
|
---|
2286 | char *pszCreateType = NULL; /* initialized to make gcc shut up */
|
---|
2287 | rc = vmdkDescBaseGetStr(pImage, &pImage->Descriptor, "createType",
|
---|
2288 | &pszCreateType);
|
---|
2289 | if (RT_FAILURE(rc))
|
---|
2290 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot get image type from descriptor in '%s'"), pImage->pszFilename);
|
---|
2291 | if ( !strcmp(pszCreateType, "twoGbMaxExtentSparse")
|
---|
2292 | || !strcmp(pszCreateType, "twoGbMaxExtentFlat"))
|
---|
2293 | pImage->uImageFlags |= VD_VMDK_IMAGE_FLAGS_SPLIT_2G;
|
---|
2294 | else if ( !strcmp(pszCreateType, "partitionedDevice")
|
---|
2295 | || !strcmp(pszCreateType, "fullDevice"))
|
---|
2296 | pImage->uImageFlags |= VD_VMDK_IMAGE_FLAGS_RAWDISK;
|
---|
2297 | else if (!strcmp(pszCreateType, "streamOptimized"))
|
---|
2298 | pImage->uImageFlags |= VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED;
|
---|
2299 | else if (!strcmp(pszCreateType, "vmfs"))
|
---|
2300 | pImage->uImageFlags |= VD_IMAGE_FLAGS_FIXED | VD_VMDK_IMAGE_FLAGS_ESX;
|
---|
2301 | RTMemTmpFree(pszCreateType);
|
---|
2302 |
|
---|
2303 | /* Count the number of extent config entries. */
|
---|
2304 | for (uLine = pImage->Descriptor.uFirstExtent, cExtents = 0;
|
---|
2305 | uLine != 0;
|
---|
2306 | uLine = pImage->Descriptor.aNextLines[uLine], cExtents++)
|
---|
2307 | /* nothing */;
|
---|
2308 |
|
---|
2309 | if (!pImage->pDescData && cExtents != 1)
|
---|
2310 | {
|
---|
2311 | /* Monolithic image, must have only one extent (already opened). */
|
---|
2312 | 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);
|
---|
2313 | }
|
---|
2314 |
|
---|
2315 | if (pImage->pDescData)
|
---|
2316 | {
|
---|
2317 | /* Non-monolithic image, extents need to be allocated. */
|
---|
2318 | rc = vmdkCreateExtents(pImage, cExtents);
|
---|
2319 | if (RT_FAILURE(rc))
|
---|
2320 | return rc;
|
---|
2321 | }
|
---|
2322 |
|
---|
2323 | for (i = 0, uLine = pImage->Descriptor.uFirstExtent;
|
---|
2324 | i < cExtents; i++, uLine = pImage->Descriptor.aNextLines[uLine])
|
---|
2325 | {
|
---|
2326 | char *pszLine = pImage->Descriptor.aLines[uLine];
|
---|
2327 |
|
---|
2328 | /* Access type of the extent. */
|
---|
2329 | if (!strncmp(pszLine, "RW", 2))
|
---|
2330 | {
|
---|
2331 | pImage->pExtents[i].enmAccess = VMDKACCESS_READWRITE;
|
---|
2332 | pszLine += 2;
|
---|
2333 | }
|
---|
2334 | else if (!strncmp(pszLine, "RDONLY", 6))
|
---|
2335 | {
|
---|
2336 | pImage->pExtents[i].enmAccess = VMDKACCESS_READONLY;
|
---|
2337 | pszLine += 6;
|
---|
2338 | }
|
---|
2339 | else if (!strncmp(pszLine, "NOACCESS", 8))
|
---|
2340 | {
|
---|
2341 | pImage->pExtents[i].enmAccess = VMDKACCESS_NOACCESS;
|
---|
2342 | pszLine += 8;
|
---|
2343 | }
|
---|
2344 | else
|
---|
2345 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2346 | if (*pszLine++ != ' ')
|
---|
2347 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2348 |
|
---|
2349 | /* Nominal size of the extent. */
|
---|
2350 | rc = RTStrToUInt64Ex(pszLine, &pszLine, 10,
|
---|
2351 | &pImage->pExtents[i].cNominalSectors);
|
---|
2352 | if (RT_FAILURE(rc))
|
---|
2353 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2354 | if (*pszLine++ != ' ')
|
---|
2355 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2356 |
|
---|
2357 | /* Type of the extent. */
|
---|
2358 | if (!strncmp(pszLine, "SPARSE", 6))
|
---|
2359 | {
|
---|
2360 | pImage->pExtents[i].enmType = VMDKETYPE_HOSTED_SPARSE;
|
---|
2361 | pszLine += 6;
|
---|
2362 | }
|
---|
2363 | else if (!strncmp(pszLine, "FLAT", 4))
|
---|
2364 | {
|
---|
2365 | pImage->pExtents[i].enmType = VMDKETYPE_FLAT;
|
---|
2366 | pszLine += 4;
|
---|
2367 | }
|
---|
2368 | else if (!strncmp(pszLine, "ZERO", 4))
|
---|
2369 | {
|
---|
2370 | pImage->pExtents[i].enmType = VMDKETYPE_ZERO;
|
---|
2371 | pszLine += 4;
|
---|
2372 | }
|
---|
2373 | else if (!strncmp(pszLine, "VMFS", 4))
|
---|
2374 | {
|
---|
2375 | pImage->pExtents[i].enmType = VMDKETYPE_VMFS;
|
---|
2376 | pszLine += 4;
|
---|
2377 | }
|
---|
2378 | else
|
---|
2379 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2380 |
|
---|
2381 | if (pImage->pExtents[i].enmType == VMDKETYPE_ZERO)
|
---|
2382 | {
|
---|
2383 | /* This one has no basename or offset. */
|
---|
2384 | if (*pszLine == ' ')
|
---|
2385 | pszLine++;
|
---|
2386 | if (*pszLine != '\0')
|
---|
2387 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2388 | pImage->pExtents[i].pszBasename = NULL;
|
---|
2389 | }
|
---|
2390 | else
|
---|
2391 | {
|
---|
2392 | /* All other extent types have basename and optional offset. */
|
---|
2393 | if (*pszLine++ != ' ')
|
---|
2394 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2395 |
|
---|
2396 | /* Basename of the image. Surrounded by quotes. */
|
---|
2397 | char *pszBasename;
|
---|
2398 | rc = vmdkStringUnquote(pImage, pszLine, &pszBasename, &pszLine);
|
---|
2399 | if (RT_FAILURE(rc))
|
---|
2400 | return rc;
|
---|
2401 | pImage->pExtents[i].pszBasename = pszBasename;
|
---|
2402 | if (*pszLine == ' ')
|
---|
2403 | {
|
---|
2404 | pszLine++;
|
---|
2405 | if (*pszLine != '\0')
|
---|
2406 | {
|
---|
2407 | /* Optional offset in extent specified. */
|
---|
2408 | rc = RTStrToUInt64Ex(pszLine, &pszLine, 10,
|
---|
2409 | &pImage->pExtents[i].uSectorOffset);
|
---|
2410 | if (RT_FAILURE(rc))
|
---|
2411 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2412 | }
|
---|
2413 | }
|
---|
2414 |
|
---|
2415 | if (*pszLine != '\0')
|
---|
2416 | return vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: parse error in extent description in '%s'"), pImage->pszFilename);
|
---|
2417 | }
|
---|
2418 | }
|
---|
2419 |
|
---|
2420 | /* Determine PCHS geometry (autogenerate if necessary). */
|
---|
2421 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2422 | VMDK_DDB_GEO_PCHS_CYLINDERS,
|
---|
2423 | &pImage->PCHSGeometry.cCylinders);
|
---|
2424 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2425 | pImage->PCHSGeometry.cCylinders = 0;
|
---|
2426 | else if (RT_FAILURE(rc))
|
---|
2427 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting PCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2428 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2429 | VMDK_DDB_GEO_PCHS_HEADS,
|
---|
2430 | &pImage->PCHSGeometry.cHeads);
|
---|
2431 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2432 | pImage->PCHSGeometry.cHeads = 0;
|
---|
2433 | else if (RT_FAILURE(rc))
|
---|
2434 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting PCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2435 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2436 | VMDK_DDB_GEO_PCHS_SECTORS,
|
---|
2437 | &pImage->PCHSGeometry.cSectors);
|
---|
2438 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2439 | pImage->PCHSGeometry.cSectors = 0;
|
---|
2440 | else if (RT_FAILURE(rc))
|
---|
2441 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting PCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2442 | if ( pImage->PCHSGeometry.cCylinders == 0
|
---|
2443 | || pImage->PCHSGeometry.cHeads == 0
|
---|
2444 | || pImage->PCHSGeometry.cHeads > 16
|
---|
2445 | || pImage->PCHSGeometry.cSectors == 0
|
---|
2446 | || pImage->PCHSGeometry.cSectors > 63)
|
---|
2447 | {
|
---|
2448 | /* Mark PCHS geometry as not yet valid (can't do the calculation here
|
---|
2449 | * as the total image size isn't known yet). */
|
---|
2450 | pImage->PCHSGeometry.cCylinders = 0;
|
---|
2451 | pImage->PCHSGeometry.cHeads = 16;
|
---|
2452 | pImage->PCHSGeometry.cSectors = 63;
|
---|
2453 | }
|
---|
2454 |
|
---|
2455 | /* Determine LCHS geometry (set to 0 if not specified). */
|
---|
2456 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2457 | VMDK_DDB_GEO_LCHS_CYLINDERS,
|
---|
2458 | &pImage->LCHSGeometry.cCylinders);
|
---|
2459 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2460 | pImage->LCHSGeometry.cCylinders = 0;
|
---|
2461 | else if (RT_FAILURE(rc))
|
---|
2462 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting LCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2463 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2464 | VMDK_DDB_GEO_LCHS_HEADS,
|
---|
2465 | &pImage->LCHSGeometry.cHeads);
|
---|
2466 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2467 | pImage->LCHSGeometry.cHeads = 0;
|
---|
2468 | else if (RT_FAILURE(rc))
|
---|
2469 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting LCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2470 | rc = vmdkDescDDBGetU32(pImage, &pImage->Descriptor,
|
---|
2471 | VMDK_DDB_GEO_LCHS_SECTORS,
|
---|
2472 | &pImage->LCHSGeometry.cSectors);
|
---|
2473 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2474 | pImage->LCHSGeometry.cSectors = 0;
|
---|
2475 | else if (RT_FAILURE(rc))
|
---|
2476 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting LCHS geometry from extent description in '%s'"), pImage->pszFilename);
|
---|
2477 | if ( pImage->LCHSGeometry.cCylinders == 0
|
---|
2478 | || pImage->LCHSGeometry.cHeads == 0
|
---|
2479 | || pImage->LCHSGeometry.cSectors == 0)
|
---|
2480 | {
|
---|
2481 | pImage->LCHSGeometry.cCylinders = 0;
|
---|
2482 | pImage->LCHSGeometry.cHeads = 0;
|
---|
2483 | pImage->LCHSGeometry.cSectors = 0;
|
---|
2484 | }
|
---|
2485 |
|
---|
2486 | /* Get image UUID. */
|
---|
2487 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor, VMDK_DDB_IMAGE_UUID,
|
---|
2488 | &pImage->ImageUuid);
|
---|
2489 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2490 | {
|
---|
2491 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2492 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2493 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2494 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2495 | RTUuidClear(&pImage->ImageUuid);
|
---|
2496 | else
|
---|
2497 | {
|
---|
2498 | rc = RTUuidCreate(&pImage->ImageUuid);
|
---|
2499 | if (RT_FAILURE(rc))
|
---|
2500 | return rc;
|
---|
2501 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2502 | VMDK_DDB_IMAGE_UUID, &pImage->ImageUuid);
|
---|
2503 | if (RT_FAILURE(rc))
|
---|
2504 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing image UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2505 | }
|
---|
2506 | }
|
---|
2507 | else if (RT_FAILURE(rc))
|
---|
2508 | return rc;
|
---|
2509 |
|
---|
2510 | /* Get image modification UUID. */
|
---|
2511 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor,
|
---|
2512 | VMDK_DDB_MODIFICATION_UUID,
|
---|
2513 | &pImage->ModificationUuid);
|
---|
2514 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2515 | {
|
---|
2516 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2517 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2518 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2519 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2520 | RTUuidClear(&pImage->ModificationUuid);
|
---|
2521 | else
|
---|
2522 | {
|
---|
2523 | rc = RTUuidCreate(&pImage->ModificationUuid);
|
---|
2524 | if (RT_FAILURE(rc))
|
---|
2525 | return rc;
|
---|
2526 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2527 | VMDK_DDB_MODIFICATION_UUID,
|
---|
2528 | &pImage->ModificationUuid);
|
---|
2529 | if (RT_FAILURE(rc))
|
---|
2530 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing image modification UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2531 | }
|
---|
2532 | }
|
---|
2533 | else if (RT_FAILURE(rc))
|
---|
2534 | return rc;
|
---|
2535 |
|
---|
2536 | /* Get UUID of parent image. */
|
---|
2537 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor, VMDK_DDB_PARENT_UUID,
|
---|
2538 | &pImage->ParentUuid);
|
---|
2539 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2540 | {
|
---|
2541 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2542 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2543 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2544 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2545 | RTUuidClear(&pImage->ParentUuid);
|
---|
2546 | else
|
---|
2547 | {
|
---|
2548 | rc = RTUuidClear(&pImage->ParentUuid);
|
---|
2549 | if (RT_FAILURE(rc))
|
---|
2550 | return rc;
|
---|
2551 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2552 | VMDK_DDB_PARENT_UUID, &pImage->ParentUuid);
|
---|
2553 | if (RT_FAILURE(rc))
|
---|
2554 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing parent UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2555 | }
|
---|
2556 | }
|
---|
2557 | else if (RT_FAILURE(rc))
|
---|
2558 | return rc;
|
---|
2559 |
|
---|
2560 | /* Get parent image modification UUID. */
|
---|
2561 | rc = vmdkDescDDBGetUuid(pImage, &pImage->Descriptor,
|
---|
2562 | VMDK_DDB_PARENT_MODIFICATION_UUID,
|
---|
2563 | &pImage->ParentModificationUuid);
|
---|
2564 | if (rc == VERR_VD_VMDK_VALUE_NOT_FOUND)
|
---|
2565 | {
|
---|
2566 | /* Image without UUID. Probably created by VMware and not yet used
|
---|
2567 | * by VirtualBox. Can only be added for images opened in read/write
|
---|
2568 | * mode, so don't bother producing a sensible UUID otherwise. */
|
---|
2569 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2570 | RTUuidClear(&pImage->ParentModificationUuid);
|
---|
2571 | else
|
---|
2572 | {
|
---|
2573 | RTUuidClear(&pImage->ParentModificationUuid);
|
---|
2574 | rc = vmdkDescDDBSetUuid(pImage, &pImage->Descriptor,
|
---|
2575 | VMDK_DDB_PARENT_MODIFICATION_UUID,
|
---|
2576 | &pImage->ParentModificationUuid);
|
---|
2577 | if (RT_FAILURE(rc))
|
---|
2578 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error storing parent modification UUID in descriptor in '%s'"), pImage->pszFilename);
|
---|
2579 | }
|
---|
2580 | }
|
---|
2581 | else if (RT_FAILURE(rc))
|
---|
2582 | return rc;
|
---|
2583 |
|
---|
2584 | return VINF_SUCCESS;
|
---|
2585 | }
|
---|
2586 |
|
---|
2587 | /**
|
---|
2588 | * Internal : Prepares the descriptor to write to the image.
|
---|
2589 | */
|
---|
2590 | static int vmdkDescriptorPrepare(PVMDKIMAGE pImage, uint64_t cbLimit,
|
---|
2591 | void **ppvData, size_t *pcbData)
|
---|
2592 | {
|
---|
2593 | int rc = VINF_SUCCESS;
|
---|
2594 |
|
---|
2595 | /*
|
---|
2596 | * Allocate temporary descriptor buffer.
|
---|
2597 | * In case there is no limit allocate a default
|
---|
2598 | * and increase if required.
|
---|
2599 | */
|
---|
2600 | size_t cbDescriptor = cbLimit ? cbLimit : 4 * _1K;
|
---|
2601 | char *pszDescriptor = (char *)RTMemAllocZ(cbDescriptor);
|
---|
2602 | size_t offDescriptor = 0;
|
---|
2603 |
|
---|
2604 | if (!pszDescriptor)
|
---|
2605 | return VERR_NO_MEMORY;
|
---|
2606 |
|
---|
2607 | for (unsigned i = 0; i < pImage->Descriptor.cLines; i++)
|
---|
2608 | {
|
---|
2609 | const char *psz = pImage->Descriptor.aLines[i];
|
---|
2610 | size_t cb = strlen(psz);
|
---|
2611 |
|
---|
2612 | /*
|
---|
2613 | * Increase the descriptor if there is no limit and
|
---|
2614 | * there is not enough room left for this line.
|
---|
2615 | */
|
---|
2616 | if (offDescriptor + cb + 1 > cbDescriptor)
|
---|
2617 | {
|
---|
2618 | if (cbLimit)
|
---|
2619 | {
|
---|
2620 | rc = vdIfError(pImage->pIfError, VERR_BUFFER_OVERFLOW, RT_SRC_POS, N_("VMDK: descriptor too long in '%s'"), pImage->pszFilename);
|
---|
2621 | break;
|
---|
2622 | }
|
---|
2623 | else
|
---|
2624 | {
|
---|
2625 | char *pszDescriptorNew = NULL;
|
---|
2626 | LogFlow(("Increasing descriptor cache\n"));
|
---|
2627 |
|
---|
2628 | pszDescriptorNew = (char *)RTMemRealloc(pszDescriptor, cbDescriptor + cb + 4 * _1K);
|
---|
2629 | if (!pszDescriptorNew)
|
---|
2630 | {
|
---|
2631 | rc = VERR_NO_MEMORY;
|
---|
2632 | break;
|
---|
2633 | }
|
---|
2634 | pszDescriptor = pszDescriptorNew;
|
---|
2635 | cbDescriptor += cb + 4 * _1K;
|
---|
2636 | }
|
---|
2637 | }
|
---|
2638 |
|
---|
2639 | if (cb > 0)
|
---|
2640 | {
|
---|
2641 | memcpy(pszDescriptor + offDescriptor, psz, cb);
|
---|
2642 | offDescriptor += cb;
|
---|
2643 | }
|
---|
2644 |
|
---|
2645 | memcpy(pszDescriptor + offDescriptor, "\n", 1);
|
---|
2646 | offDescriptor++;
|
---|
2647 | }
|
---|
2648 |
|
---|
2649 | if (RT_SUCCESS(rc))
|
---|
2650 | {
|
---|
2651 | *ppvData = pszDescriptor;
|
---|
2652 | *pcbData = offDescriptor;
|
---|
2653 | }
|
---|
2654 | else if (pszDescriptor)
|
---|
2655 | RTMemFree(pszDescriptor);
|
---|
2656 |
|
---|
2657 | return rc;
|
---|
2658 | }
|
---|
2659 |
|
---|
2660 | /**
|
---|
2661 | * Internal: write/update the descriptor part of the image.
|
---|
2662 | */
|
---|
2663 | static int vmdkWriteDescriptor(PVMDKIMAGE pImage, PVDIOCTX pIoCtx)
|
---|
2664 | {
|
---|
2665 | int rc = VINF_SUCCESS;
|
---|
2666 | uint64_t cbLimit;
|
---|
2667 | uint64_t uOffset;
|
---|
2668 | PVMDKFILE pDescFile;
|
---|
2669 | void *pvDescriptor = NULL;
|
---|
2670 | size_t cbDescriptor;
|
---|
2671 |
|
---|
2672 | if (pImage->pDescData)
|
---|
2673 | {
|
---|
2674 | /* Separate descriptor file. */
|
---|
2675 | uOffset = 0;
|
---|
2676 | cbLimit = 0;
|
---|
2677 | pDescFile = pImage->pFile;
|
---|
2678 | }
|
---|
2679 | else
|
---|
2680 | {
|
---|
2681 | /* Embedded descriptor file. */
|
---|
2682 | uOffset = VMDK_SECTOR2BYTE(pImage->pExtents[0].uDescriptorSector);
|
---|
2683 | cbLimit = VMDK_SECTOR2BYTE(pImage->pExtents[0].cDescriptorSectors);
|
---|
2684 | pDescFile = pImage->pExtents[0].pFile;
|
---|
2685 | }
|
---|
2686 | /* Bail out if there is no file to write to. */
|
---|
2687 | if (pDescFile == NULL)
|
---|
2688 | return VERR_INVALID_PARAMETER;
|
---|
2689 |
|
---|
2690 | rc = vmdkDescriptorPrepare(pImage, cbLimit, &pvDescriptor, &cbDescriptor);
|
---|
2691 | if (RT_SUCCESS(rc))
|
---|
2692 | {
|
---|
2693 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pDescFile->pStorage,
|
---|
2694 | uOffset, pvDescriptor,
|
---|
2695 | cbLimit ? cbLimit : cbDescriptor,
|
---|
2696 | pIoCtx, NULL, NULL);
|
---|
2697 | if ( RT_FAILURE(rc)
|
---|
2698 | && rc != VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
2699 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error writing descriptor in '%s'"), pImage->pszFilename);
|
---|
2700 | }
|
---|
2701 |
|
---|
2702 | if (RT_SUCCESS(rc) && !cbLimit)
|
---|
2703 | {
|
---|
2704 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pDescFile->pStorage, cbDescriptor);
|
---|
2705 | if (RT_FAILURE(rc))
|
---|
2706 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error truncating descriptor in '%s'"), pImage->pszFilename);
|
---|
2707 | }
|
---|
2708 |
|
---|
2709 | if (RT_SUCCESS(rc))
|
---|
2710 | pImage->Descriptor.fDirty = false;
|
---|
2711 |
|
---|
2712 | if (pvDescriptor)
|
---|
2713 | RTMemFree(pvDescriptor);
|
---|
2714 | return rc;
|
---|
2715 |
|
---|
2716 | }
|
---|
2717 |
|
---|
2718 | /**
|
---|
2719 | * Internal: validate the consistency check values in a binary header.
|
---|
2720 | */
|
---|
2721 | static int vmdkValidateHeader(PVMDKIMAGE pImage, PVMDKEXTENT pExtent, const SparseExtentHeader *pHeader)
|
---|
2722 | {
|
---|
2723 | int rc = VINF_SUCCESS;
|
---|
2724 | if (RT_LE2H_U32(pHeader->magicNumber) != VMDK_SPARSE_MAGICNUMBER)
|
---|
2725 | {
|
---|
2726 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: incorrect magic in sparse extent header in '%s'"), pExtent->pszFullname);
|
---|
2727 | return rc;
|
---|
2728 | }
|
---|
2729 | if (RT_LE2H_U32(pHeader->version) != 1 && RT_LE2H_U32(pHeader->version) != 3)
|
---|
2730 | {
|
---|
2731 | 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);
|
---|
2732 | return rc;
|
---|
2733 | }
|
---|
2734 | if ( (RT_LE2H_U32(pHeader->flags) & 1)
|
---|
2735 | && ( pHeader->singleEndLineChar != '\n'
|
---|
2736 | || pHeader->nonEndLineChar != ' '
|
---|
2737 | || pHeader->doubleEndLineChar1 != '\r'
|
---|
2738 | || pHeader->doubleEndLineChar2 != '\n') )
|
---|
2739 | {
|
---|
2740 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: corrupted by CR/LF translation in '%s'"), pExtent->pszFullname);
|
---|
2741 | return rc;
|
---|
2742 | }
|
---|
2743 | if (RT_LE2H_U64(pHeader->descriptorSize) > VMDK_SPARSE_DESCRIPTOR_SIZE_MAX)
|
---|
2744 | {
|
---|
2745 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: descriptor size out of bounds (%llu vs %llu) '%s'"),
|
---|
2746 | pExtent->pszFullname, RT_LE2H_U64(pHeader->descriptorSize), VMDK_SPARSE_DESCRIPTOR_SIZE_MAX);
|
---|
2747 | return rc;
|
---|
2748 | }
|
---|
2749 | return rc;
|
---|
2750 | }
|
---|
2751 |
|
---|
2752 | /**
|
---|
2753 | * Internal: read metadata belonging to an extent with binary header, i.e.
|
---|
2754 | * as found in monolithic files.
|
---|
2755 | */
|
---|
2756 | static int vmdkReadBinaryMetaExtent(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
2757 | bool fMagicAlreadyRead)
|
---|
2758 | {
|
---|
2759 | SparseExtentHeader Header;
|
---|
2760 | int rc;
|
---|
2761 |
|
---|
2762 | if (!fMagicAlreadyRead)
|
---|
2763 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage, 0,
|
---|
2764 | &Header, sizeof(Header));
|
---|
2765 | else
|
---|
2766 | {
|
---|
2767 | Header.magicNumber = RT_H2LE_U32(VMDK_SPARSE_MAGICNUMBER);
|
---|
2768 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
2769 | RT_UOFFSETOF(SparseExtentHeader, version),
|
---|
2770 | &Header.version,
|
---|
2771 | sizeof(Header)
|
---|
2772 | - RT_UOFFSETOF(SparseExtentHeader, version));
|
---|
2773 | }
|
---|
2774 |
|
---|
2775 | if (RT_SUCCESS(rc))
|
---|
2776 | {
|
---|
2777 | rc = vmdkValidateHeader(pImage, pExtent, &Header);
|
---|
2778 | if (RT_SUCCESS(rc))
|
---|
2779 | {
|
---|
2780 | uint64_t cbFile = 0;
|
---|
2781 |
|
---|
2782 | if ( (RT_LE2H_U32(Header.flags) & RT_BIT(17))
|
---|
2783 | && RT_LE2H_U64(Header.gdOffset) == VMDK_GD_AT_END)
|
---|
2784 | pExtent->fFooter = true;
|
---|
2785 |
|
---|
2786 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2787 | || ( pExtent->fFooter
|
---|
2788 | && !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)))
|
---|
2789 | {
|
---|
2790 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pExtent->pFile->pStorage, &cbFile);
|
---|
2791 | if (RT_FAILURE(rc))
|
---|
2792 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: cannot get size of '%s'"), pExtent->pszFullname);
|
---|
2793 | }
|
---|
2794 |
|
---|
2795 | if (RT_SUCCESS(rc))
|
---|
2796 | {
|
---|
2797 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2798 | pExtent->uAppendPosition = RT_ALIGN_64(cbFile, 512);
|
---|
2799 |
|
---|
2800 | if ( pExtent->fFooter
|
---|
2801 | && ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2802 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)))
|
---|
2803 | {
|
---|
2804 | /* Read the footer, which comes before the end-of-stream marker. */
|
---|
2805 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
2806 | cbFile - 2*512, &Header,
|
---|
2807 | sizeof(Header));
|
---|
2808 | if (RT_FAILURE(rc))
|
---|
2809 | {
|
---|
2810 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error reading extent footer in '%s'"), pExtent->pszFullname);
|
---|
2811 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
2812 | }
|
---|
2813 |
|
---|
2814 | if (RT_SUCCESS(rc))
|
---|
2815 | rc = vmdkValidateHeader(pImage, pExtent, &Header);
|
---|
2816 | /* Prohibit any writes to this extent. */
|
---|
2817 | pExtent->uAppendPosition = 0;
|
---|
2818 | }
|
---|
2819 |
|
---|
2820 | if (RT_SUCCESS(rc))
|
---|
2821 | {
|
---|
2822 | pExtent->uVersion = RT_LE2H_U32(Header.version);
|
---|
2823 | pExtent->enmType = VMDKETYPE_HOSTED_SPARSE; /* Just dummy value, changed later. */
|
---|
2824 | pExtent->cSectors = RT_LE2H_U64(Header.capacity);
|
---|
2825 | pExtent->cSectorsPerGrain = RT_LE2H_U64(Header.grainSize);
|
---|
2826 | pExtent->uDescriptorSector = RT_LE2H_U64(Header.descriptorOffset);
|
---|
2827 | pExtent->cDescriptorSectors = RT_LE2H_U64(Header.descriptorSize);
|
---|
2828 | pExtent->cGTEntries = RT_LE2H_U32(Header.numGTEsPerGT);
|
---|
2829 | pExtent->cOverheadSectors = RT_LE2H_U64(Header.overHead);
|
---|
2830 | pExtent->fUncleanShutdown = !!Header.uncleanShutdown;
|
---|
2831 | pExtent->uCompression = RT_LE2H_U16(Header.compressAlgorithm);
|
---|
2832 | if (RT_LE2H_U32(Header.flags) & RT_BIT(1))
|
---|
2833 | {
|
---|
2834 | pExtent->uSectorRGD = RT_LE2H_U64(Header.rgdOffset);
|
---|
2835 | pExtent->uSectorGD = RT_LE2H_U64(Header.gdOffset);
|
---|
2836 | }
|
---|
2837 | else
|
---|
2838 | {
|
---|
2839 | pExtent->uSectorGD = RT_LE2H_U64(Header.gdOffset);
|
---|
2840 | pExtent->uSectorRGD = 0;
|
---|
2841 | }
|
---|
2842 |
|
---|
2843 | if (pExtent->uDescriptorSector && !pExtent->cDescriptorSectors)
|
---|
2844 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2845 | N_("VMDK: inconsistent embedded descriptor config in '%s'"), pExtent->pszFullname);
|
---|
2846 |
|
---|
2847 | if ( RT_SUCCESS(rc)
|
---|
2848 | && ( pExtent->uSectorGD == VMDK_GD_AT_END
|
---|
2849 | || pExtent->uSectorRGD == VMDK_GD_AT_END)
|
---|
2850 | && ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2851 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)))
|
---|
2852 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2853 | N_("VMDK: cannot resolve grain directory offset in '%s'"), pExtent->pszFullname);
|
---|
2854 |
|
---|
2855 | if (RT_SUCCESS(rc))
|
---|
2856 | {
|
---|
2857 | uint64_t cSectorsPerGDE = pExtent->cGTEntries * pExtent->cSectorsPerGrain;
|
---|
2858 | if (!cSectorsPerGDE || cSectorsPerGDE > UINT32_MAX)
|
---|
2859 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2860 | N_("VMDK: incorrect grain directory size in '%s'"), pExtent->pszFullname);
|
---|
2861 | else
|
---|
2862 | {
|
---|
2863 | pExtent->cSectorsPerGDE = cSectorsPerGDE;
|
---|
2864 | pExtent->cGDEntries = (pExtent->cSectors + cSectorsPerGDE - 1) / cSectorsPerGDE;
|
---|
2865 |
|
---|
2866 | /* Fix up the number of descriptor sectors, as some flat images have
|
---|
2867 | * really just one, and this causes failures when inserting the UUID
|
---|
2868 | * values and other extra information. */
|
---|
2869 | if (pExtent->cDescriptorSectors != 0 && pExtent->cDescriptorSectors < 4)
|
---|
2870 | {
|
---|
2871 | /* Do it the easy way - just fix it for flat images which have no
|
---|
2872 | * other complicated metadata which needs space too. */
|
---|
2873 | if ( pExtent->uDescriptorSector + 4 < pExtent->cOverheadSectors
|
---|
2874 | && pExtent->cGTEntries * pExtent->cGDEntries == 0)
|
---|
2875 | pExtent->cDescriptorSectors = 4;
|
---|
2876 | }
|
---|
2877 | }
|
---|
2878 | }
|
---|
2879 | }
|
---|
2880 | }
|
---|
2881 | }
|
---|
2882 | }
|
---|
2883 | else
|
---|
2884 | {
|
---|
2885 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error reading extent header in '%s'"), pExtent->pszFullname);
|
---|
2886 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
2887 | }
|
---|
2888 |
|
---|
2889 | if (RT_FAILURE(rc))
|
---|
2890 | vmdkFreeExtentData(pImage, pExtent, false);
|
---|
2891 |
|
---|
2892 | return rc;
|
---|
2893 | }
|
---|
2894 |
|
---|
2895 | /**
|
---|
2896 | * Internal: read additional metadata belonging to an extent. For those
|
---|
2897 | * extents which have no additional metadata just verify the information.
|
---|
2898 | */
|
---|
2899 | static int vmdkReadMetaExtent(PVMDKIMAGE pImage, PVMDKEXTENT pExtent)
|
---|
2900 | {
|
---|
2901 | int rc = VINF_SUCCESS;
|
---|
2902 |
|
---|
2903 | /* disabled the check as there are too many truncated vmdk images out there */
|
---|
2904 | #ifdef VBOX_WITH_VMDK_STRICT_SIZE_CHECK
|
---|
2905 | uint64_t cbExtentSize;
|
---|
2906 | /* The image must be a multiple of a sector in size and contain the data
|
---|
2907 | * area (flat images only). If not, it means the image is at least
|
---|
2908 | * truncated, or even seriously garbled. */
|
---|
2909 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pExtent->pFile->pStorage, &cbExtentSize);
|
---|
2910 | if (RT_FAILURE(rc))
|
---|
2911 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error getting size in '%s'"), pExtent->pszFullname);
|
---|
2912 | else if ( cbExtentSize != RT_ALIGN_64(cbExtentSize, 512)
|
---|
2913 | && (pExtent->enmType != VMDKETYPE_FLAT || pExtent->cNominalSectors + pExtent->uSectorOffset > VMDK_BYTE2SECTOR(cbExtentSize)))
|
---|
2914 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2915 | N_("VMDK: file size is not a multiple of 512 in '%s', file is truncated or otherwise garbled"), pExtent->pszFullname);
|
---|
2916 | #endif /* VBOX_WITH_VMDK_STRICT_SIZE_CHECK */
|
---|
2917 | if ( RT_SUCCESS(rc)
|
---|
2918 | && pExtent->enmType == VMDKETYPE_HOSTED_SPARSE)
|
---|
2919 | {
|
---|
2920 | /* The spec says that this must be a power of two and greater than 8,
|
---|
2921 | * but probably they meant not less than 8. */
|
---|
2922 | if ( (pExtent->cSectorsPerGrain & (pExtent->cSectorsPerGrain - 1))
|
---|
2923 | || pExtent->cSectorsPerGrain < 8)
|
---|
2924 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2925 | N_("VMDK: invalid extent grain size %u in '%s'"), pExtent->cSectorsPerGrain, pExtent->pszFullname);
|
---|
2926 | else
|
---|
2927 | {
|
---|
2928 | /* This code requires that a grain table must hold a power of two multiple
|
---|
2929 | * of the number of entries per GT cache entry. */
|
---|
2930 | if ( (pExtent->cGTEntries & (pExtent->cGTEntries - 1))
|
---|
2931 | || pExtent->cGTEntries < VMDK_GT_CACHELINE_SIZE)
|
---|
2932 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS,
|
---|
2933 | N_("VMDK: grain table cache size problem in '%s'"), pExtent->pszFullname);
|
---|
2934 | else
|
---|
2935 | {
|
---|
2936 | rc = vmdkAllocStreamBuffers(pImage, pExtent);
|
---|
2937 | if (RT_SUCCESS(rc))
|
---|
2938 | {
|
---|
2939 | /* Prohibit any writes to this streamOptimized extent. */
|
---|
2940 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
2941 | pExtent->uAppendPosition = 0;
|
---|
2942 |
|
---|
2943 | if ( !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
2944 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
2945 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
|
---|
2946 | rc = vmdkReadGrainDirectory(pImage, pExtent);
|
---|
2947 | else
|
---|
2948 | {
|
---|
2949 | pExtent->uGrainSectorAbs = pExtent->cOverheadSectors;
|
---|
2950 | pExtent->cbGrainStreamRead = 0;
|
---|
2951 | }
|
---|
2952 | }
|
---|
2953 | }
|
---|
2954 | }
|
---|
2955 | }
|
---|
2956 |
|
---|
2957 | if (RT_FAILURE(rc))
|
---|
2958 | vmdkFreeExtentData(pImage, pExtent, false);
|
---|
2959 |
|
---|
2960 | return rc;
|
---|
2961 | }
|
---|
2962 |
|
---|
2963 | /**
|
---|
2964 | * Internal: write/update the metadata for a sparse extent.
|
---|
2965 | */
|
---|
2966 | static int vmdkWriteMetaSparseExtent(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
2967 | uint64_t uOffset, PVDIOCTX pIoCtx)
|
---|
2968 | {
|
---|
2969 | SparseExtentHeader Header;
|
---|
2970 |
|
---|
2971 | memset(&Header, '\0', sizeof(Header));
|
---|
2972 | Header.magicNumber = RT_H2LE_U32(VMDK_SPARSE_MAGICNUMBER);
|
---|
2973 | Header.version = RT_H2LE_U32(pExtent->uVersion);
|
---|
2974 | Header.flags = RT_H2LE_U32(RT_BIT(0));
|
---|
2975 | if (pExtent->pRGD)
|
---|
2976 | Header.flags |= RT_H2LE_U32(RT_BIT(1));
|
---|
2977 | if (pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
2978 | Header.flags |= RT_H2LE_U32(RT_BIT(16) | RT_BIT(17));
|
---|
2979 | Header.capacity = RT_H2LE_U64(pExtent->cSectors);
|
---|
2980 | Header.grainSize = RT_H2LE_U64(pExtent->cSectorsPerGrain);
|
---|
2981 | Header.descriptorOffset = RT_H2LE_U64(pExtent->uDescriptorSector);
|
---|
2982 | Header.descriptorSize = RT_H2LE_U64(pExtent->cDescriptorSectors);
|
---|
2983 | Header.numGTEsPerGT = RT_H2LE_U32(pExtent->cGTEntries);
|
---|
2984 | if (pExtent->fFooter && uOffset == 0)
|
---|
2985 | {
|
---|
2986 | if (pExtent->pRGD)
|
---|
2987 | {
|
---|
2988 | Assert(pExtent->uSectorRGD);
|
---|
2989 | Header.rgdOffset = RT_H2LE_U64(VMDK_GD_AT_END);
|
---|
2990 | Header.gdOffset = RT_H2LE_U64(VMDK_GD_AT_END);
|
---|
2991 | }
|
---|
2992 | else
|
---|
2993 | Header.gdOffset = RT_H2LE_U64(VMDK_GD_AT_END);
|
---|
2994 | }
|
---|
2995 | else
|
---|
2996 | {
|
---|
2997 | if (pExtent->pRGD)
|
---|
2998 | {
|
---|
2999 | Assert(pExtent->uSectorRGD);
|
---|
3000 | Header.rgdOffset = RT_H2LE_U64(pExtent->uSectorRGD);
|
---|
3001 | Header.gdOffset = RT_H2LE_U64(pExtent->uSectorGD);
|
---|
3002 | }
|
---|
3003 | else
|
---|
3004 | Header.gdOffset = RT_H2LE_U64(pExtent->uSectorGD);
|
---|
3005 | }
|
---|
3006 | Header.overHead = RT_H2LE_U64(pExtent->cOverheadSectors);
|
---|
3007 | Header.uncleanShutdown = pExtent->fUncleanShutdown;
|
---|
3008 | Header.singleEndLineChar = '\n';
|
---|
3009 | Header.nonEndLineChar = ' ';
|
---|
3010 | Header.doubleEndLineChar1 = '\r';
|
---|
3011 | Header.doubleEndLineChar2 = '\n';
|
---|
3012 | Header.compressAlgorithm = RT_H2LE_U16(pExtent->uCompression);
|
---|
3013 |
|
---|
3014 | int rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
3015 | uOffset, &Header, sizeof(Header),
|
---|
3016 | pIoCtx, NULL, NULL);
|
---|
3017 | if (RT_FAILURE(rc) && (rc != VERR_VD_ASYNC_IO_IN_PROGRESS))
|
---|
3018 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error writing extent header in '%s'"), pExtent->pszFullname);
|
---|
3019 | return rc;
|
---|
3020 | }
|
---|
3021 |
|
---|
3022 | /**
|
---|
3023 | * Internal: free the buffers used for streamOptimized images.
|
---|
3024 | */
|
---|
3025 | static void vmdkFreeStreamBuffers(PVMDKEXTENT pExtent)
|
---|
3026 | {
|
---|
3027 | if (pExtent->pvCompGrain)
|
---|
3028 | {
|
---|
3029 | RTMemFree(pExtent->pvCompGrain);
|
---|
3030 | pExtent->pvCompGrain = NULL;
|
---|
3031 | }
|
---|
3032 | if (pExtent->pvGrain)
|
---|
3033 | {
|
---|
3034 | RTMemFree(pExtent->pvGrain);
|
---|
3035 | pExtent->pvGrain = NULL;
|
---|
3036 | }
|
---|
3037 | }
|
---|
3038 |
|
---|
3039 | /**
|
---|
3040 | * Internal: free the memory used by the extent data structure, optionally
|
---|
3041 | * deleting the referenced files.
|
---|
3042 | *
|
---|
3043 | * @returns VBox status code.
|
---|
3044 | * @param pImage Pointer to the image instance data.
|
---|
3045 | * @param pExtent The extent to free.
|
---|
3046 | * @param fDelete Flag whether to delete the backing storage.
|
---|
3047 | */
|
---|
3048 | static int vmdkFreeExtentData(PVMDKIMAGE pImage, PVMDKEXTENT pExtent,
|
---|
3049 | bool fDelete)
|
---|
3050 | {
|
---|
3051 | int rc = VINF_SUCCESS;
|
---|
3052 |
|
---|
3053 | vmdkFreeGrainDirectory(pExtent);
|
---|
3054 | if (pExtent->pDescData)
|
---|
3055 | {
|
---|
3056 | RTMemFree(pExtent->pDescData);
|
---|
3057 | pExtent->pDescData = NULL;
|
---|
3058 | }
|
---|
3059 | if (pExtent->pFile != NULL)
|
---|
3060 | {
|
---|
3061 | /* Do not delete raw extents, these have full and base names equal. */
|
---|
3062 | rc = vmdkFileClose(pImage, &pExtent->pFile,
|
---|
3063 | fDelete
|
---|
3064 | && pExtent->pszFullname
|
---|
3065 | && pExtent->pszBasename
|
---|
3066 | && strcmp(pExtent->pszFullname, pExtent->pszBasename));
|
---|
3067 | }
|
---|
3068 | if (pExtent->pszBasename)
|
---|
3069 | {
|
---|
3070 | RTMemTmpFree((void *)pExtent->pszBasename);
|
---|
3071 | pExtent->pszBasename = NULL;
|
---|
3072 | }
|
---|
3073 | if (pExtent->pszFullname)
|
---|
3074 | {
|
---|
3075 | RTStrFree((char *)(void *)pExtent->pszFullname);
|
---|
3076 | pExtent->pszFullname = NULL;
|
---|
3077 | }
|
---|
3078 | vmdkFreeStreamBuffers(pExtent);
|
---|
3079 |
|
---|
3080 | return rc;
|
---|
3081 | }
|
---|
3082 |
|
---|
3083 | /**
|
---|
3084 | * Internal: allocate grain table cache if necessary for this image.
|
---|
3085 | */
|
---|
3086 | static int vmdkAllocateGrainTableCache(PVMDKIMAGE pImage)
|
---|
3087 | {
|
---|
3088 | PVMDKEXTENT pExtent;
|
---|
3089 |
|
---|
3090 | /* Allocate grain table cache if any sparse extent is present. */
|
---|
3091 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
3092 | {
|
---|
3093 | pExtent = &pImage->pExtents[i];
|
---|
3094 | if (pExtent->enmType == VMDKETYPE_HOSTED_SPARSE)
|
---|
3095 | {
|
---|
3096 | /* Allocate grain table cache. */
|
---|
3097 | pImage->pGTCache = (PVMDKGTCACHE)RTMemAllocZ(sizeof(VMDKGTCACHE));
|
---|
3098 | if (!pImage->pGTCache)
|
---|
3099 | return VERR_NO_MEMORY;
|
---|
3100 | for (unsigned j = 0; j < VMDK_GT_CACHE_SIZE; j++)
|
---|
3101 | {
|
---|
3102 | PVMDKGTCACHEENTRY pGCE = &pImage->pGTCache->aGTCache[j];
|
---|
3103 | pGCE->uExtent = UINT32_MAX;
|
---|
3104 | }
|
---|
3105 | pImage->pGTCache->cEntries = VMDK_GT_CACHE_SIZE;
|
---|
3106 | break;
|
---|
3107 | }
|
---|
3108 | }
|
---|
3109 |
|
---|
3110 | return VINF_SUCCESS;
|
---|
3111 | }
|
---|
3112 |
|
---|
3113 | /**
|
---|
3114 | * Internal: allocate the given number of extents.
|
---|
3115 | */
|
---|
3116 | static int vmdkCreateExtents(PVMDKIMAGE pImage, unsigned cExtents)
|
---|
3117 | {
|
---|
3118 | int rc = VINF_SUCCESS;
|
---|
3119 | PVMDKEXTENT pExtents = (PVMDKEXTENT)RTMemAllocZ(cExtents * sizeof(VMDKEXTENT));
|
---|
3120 | if (pExtents)
|
---|
3121 | {
|
---|
3122 | for (unsigned i = 0; i < cExtents; i++)
|
---|
3123 | {
|
---|
3124 | pExtents[i].pFile = NULL;
|
---|
3125 | pExtents[i].pszBasename = NULL;
|
---|
3126 | pExtents[i].pszFullname = NULL;
|
---|
3127 | pExtents[i].pGD = NULL;
|
---|
3128 | pExtents[i].pRGD = NULL;
|
---|
3129 | pExtents[i].pDescData = NULL;
|
---|
3130 | pExtents[i].uVersion = 1;
|
---|
3131 | pExtents[i].uCompression = VMDK_COMPRESSION_NONE;
|
---|
3132 | pExtents[i].uExtent = i;
|
---|
3133 | pExtents[i].pImage = pImage;
|
---|
3134 | }
|
---|
3135 | pImage->pExtents = pExtents;
|
---|
3136 | pImage->cExtents = cExtents;
|
---|
3137 | }
|
---|
3138 | else
|
---|
3139 | rc = VERR_NO_MEMORY;
|
---|
3140 |
|
---|
3141 | return rc;
|
---|
3142 | }
|
---|
3143 |
|
---|
3144 | /**
|
---|
3145 | * Internal: Create an additional file backed extent in split images.
|
---|
3146 | * Supports split sparse and flat images.
|
---|
3147 | *
|
---|
3148 | * @returns VBox status code.
|
---|
3149 | * @param pImage VMDK image instance.
|
---|
3150 | * @param cbSize Desiried size in bytes of new extent.
|
---|
3151 | */
|
---|
3152 | static int vmdkAddFileBackedExtent(PVMDKIMAGE pImage, uint64_t cbSize)
|
---|
3153 | {
|
---|
3154 | int rc = VINF_SUCCESS;
|
---|
3155 | unsigned uImageFlags = pImage->uImageFlags;
|
---|
3156 |
|
---|
3157 | /* Check for unsupported image type. */
|
---|
3158 | if ((uImageFlags & VD_VMDK_IMAGE_FLAGS_ESX)
|
---|
3159 | || (uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3160 | || (uImageFlags & VD_VMDK_IMAGE_FLAGS_RAWDISK))
|
---|
3161 | {
|
---|
3162 | return VERR_NOT_SUPPORTED;
|
---|
3163 | }
|
---|
3164 |
|
---|
3165 | /* Allocate array of extents and copy existing extents to it. */
|
---|
3166 | PVMDKEXTENT pNewExtents = (PVMDKEXTENT)RTMemAllocZ((pImage->cExtents + 1) * sizeof(VMDKEXTENT));
|
---|
3167 | if (!pNewExtents)
|
---|
3168 | {
|
---|
3169 | return VERR_NO_MEMORY;
|
---|
3170 | }
|
---|
3171 |
|
---|
3172 | memcpy(pNewExtents, pImage->pExtents, pImage->cExtents * sizeof(VMDKEXTENT));
|
---|
3173 |
|
---|
3174 | /* Locate newly created extent and populate default metadata. */
|
---|
3175 | PVMDKEXTENT pExtent = &pNewExtents[pImage->cExtents];
|
---|
3176 |
|
---|
3177 | pExtent->pFile = NULL;
|
---|
3178 | pExtent->pszBasename = NULL;
|
---|
3179 | pExtent->pszFullname = NULL;
|
---|
3180 | pExtent->pGD = NULL;
|
---|
3181 | pExtent->pRGD = NULL;
|
---|
3182 | pExtent->pDescData = NULL;
|
---|
3183 | pExtent->uVersion = 1;
|
---|
3184 | pExtent->uCompression = VMDK_COMPRESSION_NONE;
|
---|
3185 | pExtent->uExtent = pImage->cExtents;
|
---|
3186 | pExtent->pImage = pImage;
|
---|
3187 | pExtent->cNominalSectors = VMDK_BYTE2SECTOR(cbSize);
|
---|
3188 | pExtent->enmAccess = VMDKACCESS_READWRITE;
|
---|
3189 | pExtent->uSectorOffset = 0;
|
---|
3190 | pExtent->fMetaDirty = true;
|
---|
3191 |
|
---|
3192 | /* Apply image type specific meta data. */
|
---|
3193 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3194 | {
|
---|
3195 | pExtent->enmType = VMDKETYPE_FLAT;
|
---|
3196 | }
|
---|
3197 | else
|
---|
3198 | {
|
---|
3199 | uint64_t cSectorsPerGDE, cSectorsPerGD;
|
---|
3200 | pExtent->enmType = VMDKETYPE_HOSTED_SPARSE;
|
---|
3201 | pExtent->cSectors = VMDK_BYTE2SECTOR(RT_ALIGN_64(cbSize, _64K));
|
---|
3202 | pExtent->cSectorsPerGrain = VMDK_BYTE2SECTOR(_64K);
|
---|
3203 | pExtent->cGTEntries = 512;
|
---|
3204 | cSectorsPerGDE = pExtent->cGTEntries * pExtent->cSectorsPerGrain;
|
---|
3205 | pExtent->cSectorsPerGDE = cSectorsPerGDE;
|
---|
3206 | pExtent->cGDEntries = (pExtent->cSectors + cSectorsPerGDE - 1) / cSectorsPerGDE;
|
---|
3207 | cSectorsPerGD = (pExtent->cGDEntries + (512 / sizeof(uint32_t) - 1)) / (512 / sizeof(uint32_t));
|
---|
3208 | }
|
---|
3209 |
|
---|
3210 | /* Allocate and set file name for extent. */
|
---|
3211 | char *pszBasenameSubstr = RTPathFilename(pImage->pszFilename);
|
---|
3212 | AssertPtr(pszBasenameSubstr);
|
---|
3213 |
|
---|
3214 | char *pszBasenameSuff = RTPathSuffix(pszBasenameSubstr);
|
---|
3215 | char *pszBasenameBase = RTStrDup(pszBasenameSubstr);
|
---|
3216 | RTPathStripSuffix(pszBasenameBase);
|
---|
3217 | char *pszTmp;
|
---|
3218 | size_t cbTmp;
|
---|
3219 |
|
---|
3220 | if (pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3221 | RTStrAPrintf(&pszTmp, "%s-f%03d%s", pszBasenameBase,
|
---|
3222 | pExtent->uExtent + 1, pszBasenameSuff);
|
---|
3223 | else
|
---|
3224 | RTStrAPrintf(&pszTmp, "%s-s%03d%s", pszBasenameBase, pExtent->uExtent + 1,
|
---|
3225 | pszBasenameSuff);
|
---|
3226 |
|
---|
3227 | RTStrFree(pszBasenameBase);
|
---|
3228 | if (!pszTmp)
|
---|
3229 | return VERR_NO_STR_MEMORY;
|
---|
3230 | cbTmp = strlen(pszTmp) + 1;
|
---|
3231 | char *pszBasename = (char *)RTMemTmpAlloc(cbTmp);
|
---|
3232 | if (!pszBasename)
|
---|
3233 | {
|
---|
3234 | RTStrFree(pszTmp);
|
---|
3235 | return VERR_NO_MEMORY;
|
---|
3236 | }
|
---|
3237 |
|
---|
3238 | memcpy(pszBasename, pszTmp, cbTmp);
|
---|
3239 | RTStrFree(pszTmp);
|
---|
3240 |
|
---|
3241 | pExtent->pszBasename = pszBasename;
|
---|
3242 |
|
---|
3243 | char *pszBasedirectory = RTStrDup(pImage->pszFilename);
|
---|
3244 | if (!pszBasedirectory)
|
---|
3245 | return VERR_NO_STR_MEMORY;
|
---|
3246 | RTPathStripFilename(pszBasedirectory);
|
---|
3247 | char *pszFullname = RTPathJoinA(pszBasedirectory, pExtent->pszBasename);
|
---|
3248 | RTStrFree(pszBasedirectory);
|
---|
3249 | if (!pszFullname)
|
---|
3250 | return VERR_NO_STR_MEMORY;
|
---|
3251 | pExtent->pszFullname = pszFullname;
|
---|
3252 |
|
---|
3253 | /* Create file for extent. */
|
---|
3254 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszBasename, pExtent->pszFullname,
|
---|
3255 | VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags,
|
---|
3256 | true /* fCreate */));
|
---|
3257 | if (RT_FAILURE(rc))
|
---|
3258 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new file '%s'"), pExtent->pszFullname);
|
---|
3259 |
|
---|
3260 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
3261 | {
|
---|
3262 | /* For flat images: Pre allocate file space. */
|
---|
3263 | rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pExtent->pFile->pStorage, cbSize,
|
---|
3264 | 0 /* fFlags */, NULL, 0, 0);
|
---|
3265 | if (RT_FAILURE(rc))
|
---|
3266 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not set size of new file '%s'"), pExtent->pszFullname);
|
---|
3267 | }
|
---|
3268 | else
|
---|
3269 | {
|
---|
3270 | /* For sparse images: Allocate new grain directories/tables. */
|
---|
3271 | /* fPreAlloc should never be false because VMware can't use such images. */
|
---|
3272 | rc = vmdkCreateGrainDirectory(pImage, pExtent,
|
---|
3273 | RT_MAX( pExtent->uDescriptorSector
|
---|
3274 | + pExtent->cDescriptorSectors,
|
---|
3275 | 1),
|
---|
3276 | true /* fPreAlloc */);
|
---|
3277 | if (RT_FAILURE(rc))
|
---|
3278 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not create new grain directory in '%s'"), pExtent->pszFullname);
|
---|
3279 | }
|
---|
3280 |
|
---|
3281 | /* Insert new extent into descriptor file. */
|
---|
3282 | rc = vmdkDescExtInsert(pImage, &pImage->Descriptor, pExtent->enmAccess,
|
---|
3283 | pExtent->cNominalSectors, pExtent->enmType,
|
---|
3284 | pExtent->pszBasename, pExtent->uSectorOffset);
|
---|
3285 | if (RT_FAILURE(rc))
|
---|
3286 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: could not insert the extent list into descriptor in '%s'"), pImage->pszFilename);
|
---|
3287 |
|
---|
3288 | pImage->pExtents = pNewExtents;
|
---|
3289 | pImage->cExtents++;
|
---|
3290 |
|
---|
3291 | return rc;
|
---|
3292 | }
|
---|
3293 |
|
---|
3294 | /**
|
---|
3295 | * Reads and processes the descriptor embedded in sparse images.
|
---|
3296 | *
|
---|
3297 | * @returns VBox status code.
|
---|
3298 | * @param pImage VMDK image instance.
|
---|
3299 | * @param pFile The sparse file handle.
|
---|
3300 | */
|
---|
3301 | static int vmdkDescriptorReadSparse(PVMDKIMAGE pImage, PVMDKFILE pFile)
|
---|
3302 | {
|
---|
3303 | /* It's a hosted single-extent image. */
|
---|
3304 | int rc = vmdkCreateExtents(pImage, 1);
|
---|
3305 | if (RT_SUCCESS(rc))
|
---|
3306 | {
|
---|
3307 | /* The opened file is passed to the extent. No separate descriptor
|
---|
3308 | * file, so no need to keep anything open for the image. */
|
---|
3309 | PVMDKEXTENT pExtent = &pImage->pExtents[0];
|
---|
3310 | pExtent->pFile = pFile;
|
---|
3311 | pImage->pFile = NULL;
|
---|
3312 | pExtent->pszFullname = RTPathAbsDup(pImage->pszFilename);
|
---|
3313 | if (RT_LIKELY(pExtent->pszFullname))
|
---|
3314 | {
|
---|
3315 | /* As we're dealing with a monolithic image here, there must
|
---|
3316 | * be a descriptor embedded in the image file. */
|
---|
3317 | rc = vmdkReadBinaryMetaExtent(pImage, pExtent, true /* fMagicAlreadyRead */);
|
---|
3318 | if ( RT_SUCCESS(rc)
|
---|
3319 | && pExtent->uDescriptorSector
|
---|
3320 | && pExtent->cDescriptorSectors)
|
---|
3321 | {
|
---|
3322 | /* HACK: extend the descriptor if it is unusually small and it fits in
|
---|
3323 | * the unused space after the image header. Allows opening VMDK files
|
---|
3324 | * with extremely small descriptor in read/write mode.
|
---|
3325 | *
|
---|
3326 | * The previous version introduced a possible regression for VMDK stream
|
---|
3327 | * optimized images from VMware which tend to have only a single sector sized
|
---|
3328 | * descriptor. Increasing the descriptor size resulted in adding the various uuid
|
---|
3329 | * entries required to make it work with VBox but for stream optimized images
|
---|
3330 | * the updated binary header wasn't written to the disk creating a mismatch
|
---|
3331 | * between advertised and real descriptor size.
|
---|
3332 | *
|
---|
3333 | * The descriptor size will be increased even if opened readonly now if there
|
---|
3334 | * enough room but the new value will not be written back to the image.
|
---|
3335 | */
|
---|
3336 | if ( pExtent->cDescriptorSectors < 3
|
---|
3337 | && (int64_t)pExtent->uSectorGD - pExtent->uDescriptorSector >= 4
|
---|
3338 | && (!pExtent->uSectorRGD || (int64_t)pExtent->uSectorRGD - pExtent->uDescriptorSector >= 4))
|
---|
3339 | {
|
---|
3340 | uint64_t cDescriptorSectorsOld = pExtent->cDescriptorSectors;
|
---|
3341 |
|
---|
3342 | pExtent->cDescriptorSectors = 4;
|
---|
3343 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
3344 | {
|
---|
3345 | /*
|
---|
3346 | * Update the on disk number now to make sure we don't introduce inconsistencies
|
---|
3347 | * in case of stream optimized images from VMware where the descriptor is just
|
---|
3348 | * one sector big (the binary header is not written to disk for complete
|
---|
3349 | * stream optimized images in vmdkFlushImage()).
|
---|
3350 | */
|
---|
3351 | uint64_t u64DescSizeNew = RT_H2LE_U64(pExtent->cDescriptorSectors);
|
---|
3352 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pFile->pStorage,
|
---|
3353 | RT_UOFFSETOF(SparseExtentHeader, descriptorSize),
|
---|
3354 | &u64DescSizeNew, sizeof(u64DescSizeNew));
|
---|
3355 | if (RT_FAILURE(rc))
|
---|
3356 | {
|
---|
3357 | LogFlowFunc(("Increasing the descriptor size failed with %Rrc\n", rc));
|
---|
3358 | /* Restore the old size and carry on. */
|
---|
3359 | pExtent->cDescriptorSectors = cDescriptorSectorsOld;
|
---|
3360 | }
|
---|
3361 | }
|
---|
3362 | }
|
---|
3363 | /* Read the descriptor from the extent. */
|
---|
3364 | pExtent->pDescData = (char *)RTMemAllocZ(VMDK_SECTOR2BYTE(pExtent->cDescriptorSectors));
|
---|
3365 | if (RT_LIKELY(pExtent->pDescData))
|
---|
3366 | {
|
---|
3367 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pExtent->pFile->pStorage,
|
---|
3368 | VMDK_SECTOR2BYTE(pExtent->uDescriptorSector),
|
---|
3369 | pExtent->pDescData,
|
---|
3370 | VMDK_SECTOR2BYTE(pExtent->cDescriptorSectors));
|
---|
3371 | if (RT_SUCCESS(rc))
|
---|
3372 | {
|
---|
3373 | rc = vmdkParseDescriptor(pImage, pExtent->pDescData,
|
---|
3374 | VMDK_SECTOR2BYTE(pExtent->cDescriptorSectors));
|
---|
3375 | if ( RT_SUCCESS(rc)
|
---|
3376 | && ( !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3377 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_ASYNC_IO)))
|
---|
3378 | {
|
---|
3379 | rc = vmdkReadMetaExtent(pImage, pExtent);
|
---|
3380 | if (RT_SUCCESS(rc))
|
---|
3381 | {
|
---|
3382 | /* Mark the extent as unclean if opened in read-write mode. */
|
---|
3383 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
3384 | && !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED))
|
---|
3385 | {
|
---|
3386 | pExtent->fUncleanShutdown = true;
|
---|
3387 | pExtent->fMetaDirty = true;
|
---|
3388 | }
|
---|
3389 | }
|
---|
3390 | }
|
---|
3391 | else if (RT_SUCCESS(rc))
|
---|
3392 | rc = VERR_NOT_SUPPORTED;
|
---|
3393 | }
|
---|
3394 | else
|
---|
3395 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: read error for descriptor in '%s'"), pExtent->pszFullname);
|
---|
3396 | }
|
---|
3397 | else
|
---|
3398 | rc = VERR_NO_MEMORY;
|
---|
3399 | }
|
---|
3400 | else if (RT_SUCCESS(rc))
|
---|
3401 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: monolithic image without descriptor in '%s'"), pImage->pszFilename);
|
---|
3402 | }
|
---|
3403 | else
|
---|
3404 | rc = VERR_NO_MEMORY;
|
---|
3405 | }
|
---|
3406 |
|
---|
3407 | return rc;
|
---|
3408 | }
|
---|
3409 |
|
---|
3410 | /**
|
---|
3411 | * Reads the descriptor from a pure text file.
|
---|
3412 | *
|
---|
3413 | * @returns VBox status code.
|
---|
3414 | * @param pImage VMDK image instance.
|
---|
3415 | * @param pFile The descriptor file handle.
|
---|
3416 | */
|
---|
3417 | static int vmdkDescriptorReadAscii(PVMDKIMAGE pImage, PVMDKFILE pFile)
|
---|
3418 | {
|
---|
3419 | /* Allocate at least 10K, and make sure that there is 5K free space
|
---|
3420 | * in case new entries need to be added to the descriptor. Never
|
---|
3421 | * allocate more than 128K, because that's no valid descriptor file
|
---|
3422 | * and will result in the correct "truncated read" error handling. */
|
---|
3423 | uint64_t cbFileSize;
|
---|
3424 | int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pFile->pStorage, &cbFileSize);
|
---|
3425 | if ( RT_SUCCESS(rc)
|
---|
3426 | && cbFileSize >= 50)
|
---|
3427 | {
|
---|
3428 | uint64_t cbSize = cbFileSize;
|
---|
3429 | if (cbSize % VMDK_SECTOR2BYTE(10))
|
---|
3430 | cbSize += VMDK_SECTOR2BYTE(20) - cbSize % VMDK_SECTOR2BYTE(10);
|
---|
3431 | else
|
---|
3432 | cbSize += VMDK_SECTOR2BYTE(10);
|
---|
3433 | cbSize = RT_MIN(cbSize, _128K);
|
---|
3434 | pImage->cbDescAlloc = RT_MAX(VMDK_SECTOR2BYTE(20), cbSize);
|
---|
3435 | pImage->pDescData = (char *)RTMemAllocZ(pImage->cbDescAlloc);
|
---|
3436 | if (RT_LIKELY(pImage->pDescData))
|
---|
3437 | {
|
---|
3438 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pFile->pStorage, 0, pImage->pDescData,
|
---|
3439 | RT_MIN(pImage->cbDescAlloc, cbFileSize));
|
---|
3440 | if (RT_SUCCESS(rc))
|
---|
3441 | {
|
---|
3442 | #if 0 /** @todo Revisit */
|
---|
3443 | cbRead += sizeof(u32Magic);
|
---|
3444 | if (cbRead == pImage->cbDescAlloc)
|
---|
3445 | {
|
---|
3446 | /* Likely the read is truncated. Better fail a bit too early
|
---|
3447 | * (normally the descriptor is much smaller than our buffer). */
|
---|
3448 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: cannot read descriptor in '%s'"), pImage->pszFilename);
|
---|
3449 | goto out;
|
---|
3450 | }
|
---|
3451 | #endif
|
---|
3452 | rc = vmdkParseDescriptor(pImage, pImage->pDescData,
|
---|
3453 | pImage->cbDescAlloc);
|
---|
3454 | if (RT_SUCCESS(rc))
|
---|
3455 | {
|
---|
3456 | for (unsigned i = 0; i < pImage->cExtents && RT_SUCCESS(rc); i++)
|
---|
3457 | {
|
---|
3458 | PVMDKEXTENT pExtent = &pImage->pExtents[i];
|
---|
3459 | if (pExtent->pszBasename)
|
---|
3460 | {
|
---|
3461 | /* Hack to figure out whether the specified name in the
|
---|
3462 | * extent descriptor is absolute. Doesn't always work, but
|
---|
3463 | * should be good enough for now. */
|
---|
3464 | char *pszFullname;
|
---|
3465 | /** @todo implement proper path absolute check. */
|
---|
3466 | if (pExtent->pszBasename[0] == RTPATH_SLASH)
|
---|
3467 | {
|
---|
3468 | pszFullname = RTStrDup(pExtent->pszBasename);
|
---|
3469 | if (!pszFullname)
|
---|
3470 | {
|
---|
3471 | rc = VERR_NO_MEMORY;
|
---|
3472 | break;
|
---|
3473 | }
|
---|
3474 | }
|
---|
3475 | else
|
---|
3476 | {
|
---|
3477 | char *pszDirname = RTStrDup(pImage->pszFilename);
|
---|
3478 | if (!pszDirname)
|
---|
3479 | {
|
---|
3480 | rc = VERR_NO_MEMORY;
|
---|
3481 | break;
|
---|
3482 | }
|
---|
3483 | RTPathStripFilename(pszDirname);
|
---|
3484 | pszFullname = RTPathJoinA(pszDirname, pExtent->pszBasename);
|
---|
3485 | RTStrFree(pszDirname);
|
---|
3486 | if (!pszFullname)
|
---|
3487 | {
|
---|
3488 | rc = VERR_NO_STR_MEMORY;
|
---|
3489 | break;
|
---|
3490 | }
|
---|
3491 | }
|
---|
3492 | pExtent->pszFullname = pszFullname;
|
---|
3493 | }
|
---|
3494 | else
|
---|
3495 | pExtent->pszFullname = NULL;
|
---|
3496 |
|
---|
3497 | unsigned uOpenFlags = pImage->uOpenFlags | ((pExtent->enmAccess == VMDKACCESS_READONLY) ? VD_OPEN_FLAGS_READONLY : 0);
|
---|
3498 | switch (pExtent->enmType)
|
---|
3499 | {
|
---|
3500 | case VMDKETYPE_HOSTED_SPARSE:
|
---|
3501 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszBasename, pExtent->pszFullname,
|
---|
3502 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */));
|
---|
3503 | if (RT_FAILURE(rc))
|
---|
3504 | {
|
---|
3505 | /* Do NOT signal an appropriate error here, as the VD
|
---|
3506 | * layer has the choice of retrying the open if it
|
---|
3507 | * failed. */
|
---|
3508 | break;
|
---|
3509 | }
|
---|
3510 | rc = vmdkReadBinaryMetaExtent(pImage, pExtent,
|
---|
3511 | false /* fMagicAlreadyRead */);
|
---|
3512 | if (RT_FAILURE(rc))
|
---|
3513 | break;
|
---|
3514 | rc = vmdkReadMetaExtent(pImage, pExtent);
|
---|
3515 | if (RT_FAILURE(rc))
|
---|
3516 | break;
|
---|
3517 |
|
---|
3518 | /* Mark extent as unclean if opened in read-write mode. */
|
---|
3519 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
3520 | {
|
---|
3521 | pExtent->fUncleanShutdown = true;
|
---|
3522 | pExtent->fMetaDirty = true;
|
---|
3523 | }
|
---|
3524 | break;
|
---|
3525 | case VMDKETYPE_VMFS:
|
---|
3526 | case VMDKETYPE_FLAT:
|
---|
3527 | rc = vmdkFileOpen(pImage, &pExtent->pFile, pExtent->pszBasename, pExtent->pszFullname,
|
---|
3528 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */));
|
---|
3529 | if (RT_FAILURE(rc))
|
---|
3530 | {
|
---|
3531 | /* Do NOT signal an appropriate error here, as the VD
|
---|
3532 | * layer has the choice of retrying the open if it
|
---|
3533 | * failed. */
|
---|
3534 | break;
|
---|
3535 | }
|
---|
3536 | break;
|
---|
3537 | case VMDKETYPE_ZERO:
|
---|
3538 | /* Nothing to do. */
|
---|
3539 | break;
|
---|
3540 | default:
|
---|
3541 | AssertMsgFailed(("unknown vmdk extent type %d\n", pExtent->enmType));
|
---|
3542 | }
|
---|
3543 | }
|
---|
3544 | }
|
---|
3545 | }
|
---|
3546 | else
|
---|
3547 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: read error for descriptor in '%s'"), pImage->pszFilename);
|
---|
3548 | }
|
---|
3549 | else
|
---|
3550 | rc = VERR_NO_MEMORY;
|
---|
3551 | }
|
---|
3552 | else if (RT_SUCCESS(rc))
|
---|
3553 | rc = vdIfError(pImage->pIfError, VERR_VD_VMDK_INVALID_HEADER, RT_SRC_POS, N_("VMDK: descriptor in '%s' is too short"), pImage->pszFilename);
|
---|
3554 |
|
---|
3555 | return rc;
|
---|
3556 | }
|
---|
3557 |
|
---|
3558 | /**
|
---|
3559 | * Read and process the descriptor based on the image type.
|
---|
3560 | *
|
---|
3561 | * @returns VBox status code.
|
---|
3562 | * @param pImage VMDK image instance.
|
---|
3563 | * @param pFile VMDK file handle.
|
---|
3564 | */
|
---|
3565 | static int vmdkDescriptorRead(PVMDKIMAGE pImage, PVMDKFILE pFile)
|
---|
3566 | {
|
---|
3567 | uint32_t u32Magic;
|
---|
3568 |
|
---|
3569 | /* Read magic (if present). */
|
---|
3570 | int rc = vdIfIoIntFileReadSync(pImage->pIfIo, pFile->pStorage, 0,
|
---|
3571 | &u32Magic, sizeof(u32Magic));
|
---|
3572 | if (RT_SUCCESS(rc))
|
---|
3573 | {
|
---|
3574 | /* Handle the file according to its magic number. */
|
---|
3575 | if (RT_LE2H_U32(u32Magic) == VMDK_SPARSE_MAGICNUMBER)
|
---|
3576 | rc = vmdkDescriptorReadSparse(pImage, pFile);
|
---|
3577 | else
|
---|
3578 | rc = vmdkDescriptorReadAscii(pImage, pFile);
|
---|
3579 | }
|
---|
3580 | else
|
---|
3581 | {
|
---|
3582 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: error reading the magic number in '%s'"), pImage->pszFilename);
|
---|
3583 | rc = VERR_VD_VMDK_INVALID_HEADER;
|
---|
3584 | }
|
---|
3585 |
|
---|
3586 | return rc;
|
---|
3587 | }
|
---|
3588 |
|
---|
3589 | /**
|
---|
3590 | * Internal: Open an image, constructing all necessary data structures.
|
---|
3591 | */
|
---|
3592 | static int vmdkOpenImage(PVMDKIMAGE pImage, unsigned uOpenFlags)
|
---|
3593 | {
|
---|
3594 | pImage->uOpenFlags = uOpenFlags;
|
---|
3595 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
3596 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
3597 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
3598 |
|
---|
3599 | /*
|
---|
3600 | * Open the image.
|
---|
3601 | * We don't have to check for asynchronous access because
|
---|
3602 | * we only support raw access and the opened file is a description
|
---|
3603 | * file were no data is stored.
|
---|
3604 | */
|
---|
3605 | PVMDKFILE pFile;
|
---|
3606 | int rc = vmdkFileOpen(pImage, &pFile, NULL, pImage->pszFilename,
|
---|
3607 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */));
|
---|
3608 | if (RT_SUCCESS(rc))
|
---|
3609 | {
|
---|
3610 | pImage->pFile = pFile;
|
---|
3611 |
|
---|
3612 | rc = vmdkDescriptorRead(pImage, pFile);
|
---|
3613 | if (RT_SUCCESS(rc))
|
---|
3614 | {
|
---|
3615 | /* Determine PCHS geometry if not set. */
|
---|
3616 | if (pImage->PCHSGeometry.cCylinders == 0)
|
---|
3617 | {
|
---|
3618 | uint64_t cCylinders = VMDK_BYTE2SECTOR(pImage->cbSize)
|
---|
3619 | / pImage->PCHSGeometry.cHeads
|
---|
3620 | / pImage->PCHSGeometry.cSectors;
|
---|
3621 | pImage->PCHSGeometry.cCylinders = (unsigned)RT_MIN(cCylinders, 16383);
|
---|
3622 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
3623 | && !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED))
|
---|
3624 | {
|
---|
3625 | rc = vmdkDescSetPCHSGeometry(pImage, &pImage->PCHSGeometry);
|
---|
3626 | AssertRC(rc);
|
---|
3627 | }
|
---|
3628 | }
|
---|
3629 |
|
---|
3630 | /* Update the image metadata now in case has changed. */
|
---|
3631 | rc = vmdkFlushImage(pImage, NULL);
|
---|
3632 | if (RT_SUCCESS(rc))
|
---|
3633 | {
|
---|
3634 | /* Figure out a few per-image constants from the extents. */
|
---|
3635 | pImage->cbSize = 0;
|
---|
3636 | for (unsigned i = 0; i < pImage->cExtents; i++)
|
---|
3637 | {
|
---|
3638 | PVMDKEXTENT pExtent = &pImage->pExtents[i];
|
---|
3639 | if (pExtent->enmType == VMDKETYPE_HOSTED_SPARSE)
|
---|
3640 | {
|
---|
3641 | /* Here used to be a check whether the nominal size of an extent
|
---|
3642 | * is a multiple of the grain size. The spec says that this is
|
---|
3643 | * always the case, but unfortunately some files out there in the
|
---|
3644 | * wild violate the spec (e.g. ReactOS 0.3.1). */
|
---|
3645 | }
|
---|
3646 | else if ( pExtent->enmType == VMDKETYPE_FLAT
|
---|
3647 | || pExtent->enmType == VMDKETYPE_ZERO)
|
---|
3648 | pImage->uImageFlags |= VD_IMAGE_FLAGS_FIXED;
|
---|
3649 |
|
---|
3650 | pImage->cbSize += VMDK_SECTOR2BYTE(pExtent->cNominalSectors);
|
---|
3651 | }
|
---|
3652 |
|
---|
3653 | if ( !(pImage->uImageFlags & VD_VMDK_IMAGE_FLAGS_STREAM_OPTIMIZED)
|
---|
3654 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
3655 | || !(pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
|
---|
3656 | rc = vmdkAllocateGrainTableCache(pImage);
|
---|
3657 | }
|
---|
3658 | }
|
---|
3659 | }
|
---|
3660 | /* else: Do NOT signal an appropriate error here, as the VD layer has the
|
---|
3661 | * choice of retrying the open if it failed. */
|
---|
3662 |
|
---|
3663 | if (RT_SUCCESS(rc))
|
---|
3664 | {
|
---|
3665 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
3666 | pImage->RegionList.fFlags = 0;
|
---|
3667 | pImage->RegionList.cRegions = 1;
|
---|
3668 |
|
---|
3669 | pRegion->offRegion = 0; /* Disk start. */
|
---|
3670 | pRegion->cbBlock = 512;
|
---|
3671 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
3672 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
3673 | pRegion->cbData = 512;
|
---|
3674 | pRegion->cbMetadata = 0;
|
---|
3675 | pRegion->cRegionBlocksOrBytes = pImage->cbSize;
|
---|
3676 | }
|
---|
3677 | else
|
---|
3678 | vmdkFreeImage(pImage, false, false /*fFlush*/); /* Don't try to flush anything if opening failed. */
|
---|
3679 | return rc;
|
---|
3680 | }
|
---|
3681 |
|
---|
3682 | /**
|
---|
3683 | * Frees a raw descriptor.
|
---|
3684 | * @internal
|
---|
3685 | */
|
---|
3686 | static int vmdkRawDescFree(PVDISKRAW pRawDesc)
|
---|
3687 | {
|
---|
3688 | if (!pRawDesc)
|
---|
3689 | return VINF_SUCCESS;
|
---|
3690 |
|
---|
3691 | RTStrFree(pRawDesc->pszRawDisk);
|
---|
3692 | pRawDesc->pszRawDisk = NULL;
|
---|
3693 |
|
---|
3694 | /* Partitions: */
|
---|
3695 | for (unsigned i = 0; i < pRawDesc->cPartDescs; i++)
|
---|
3696 | {
|
---|
3697 | RTStrFree(pRawDesc->pPartDescs[i].pszRawDevice);
|
---|
3698 | pRawDesc->pPartDescs[i].pszRawDevice = NULL;
|
---|
3699 |
|
---|
3700 | RTMemFree(pRawDesc->pPartDescs[i].pvPartitionData);
|
---|
3701 | pRawDesc->pPartDescs[i].pvPartitionData = NULL;
|
---|
3702 | }
|
---|
3703 |
|
---|
3704 | RTMemFree(pRawDesc->pPartDescs);
|
---|
3705 | pRawDesc->pPartDescs = NULL;
|
---|
3706 |
|
---|
3707 | RTMemFree(pRawDesc);
|
---|
3708 | return VINF_SUCCESS;
|
---|
3709 | }
|
---|
3710 |
|
---|
3711 | /**
|
---|
3712 | * Helper that grows the raw partition descriptor table by @a cToAdd entries,
|
---|
3713 | * returning the pointer to the first new entry.
|
---|
3714 | * @internal
|
---|
3715 | */
|
---|
3716 | static int vmdkRawDescAppendPartDesc(PVMDKIMAGE pImage, PVDISKRAW pRawDesc, uint32_t cToAdd, PVDISKRAWPARTDESC *ppRet)
|
---|
3717 | {
|
---|
3718 | uint32_t const cOld = pRawDesc->cPartDescs;
|
---|
3719 | uint32_t const cNew = cOld + cToAdd;
|
---|
3720 | PVDISKRAWPARTDESC paNew = (PVDISKRAWPARTDESC)RTMemReallocZ(pRawDesc->pPartDescs,
|
---|
3721 | cOld * sizeof(pRawDesc->pPartDescs[0]),
|
---|
3722 | cNew * sizeof(pRawDesc->pPartDescs[0]));
|
---|
3723 | if (paNew)
|
---|
3724 | {
|
---|
3725 | pRawDesc->cPartDescs = cNew;
|
---|
3726 | pRawDesc->pPartDescs = paNew;
|
---|
3727 |
|
---|
3728 | *ppRet = &paNew[cOld];
|
---|
3729 | return VINF_SUCCESS;
|
---|
3730 | }
|
---|
3731 | *ppRet = NULL;
|
---|
3732 | return vdIfError(pImage->pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
3733 | N_("VMDK: Image path: '%s'. Out of memory growing the partition descriptors (%u -> %u)."),
|
---|
3734 | pImage->pszFilename, cOld, cNew);
|
---|
3735 | }
|
---|
3736 |
|
---|
3737 | /**
|
---|
3738 | * @callback_method_impl{FNRTSORTCMP}
|
---|
3739 | */
|
---|
3740 | static DECLCALLBACK(int) vmdkRawDescPartComp(void const *pvElement1, void const *pvElement2, void *pvUser)
|
---|
3741 | {
|
---|
3742 | RT_NOREF(pvUser);
|
---|
3743 | int64_t const iDelta = ((PVDISKRAWPARTDESC)pvElement1)->offStartInVDisk - ((PVDISKRAWPARTDESC)pvElement2)->offStartInVDisk;
|
---|
3744 | return iDelta < 0 ? -1 : iDelta > 0 ? 1 : 0;
|
---|
3745 | }
|
---|
3746 |
|
---|
3747 | /**
|
---|
3748 | * Post processes the partition descriptors.
|
---|
3749 | *
|
---|
3750 | * Sorts them and check that they don't overlap.
|
---|
3751 | */
|
---|
3752 | static int vmdkRawDescPostProcessPartitions(PVMDKIMAGE pImage, PVDISKRAW pRawDesc, uint64_t cbSize)
|
---|
3753 | {
|
---|
3754 | /*
|
---|
3755 | * Sort data areas in ascending order of start.
|
---|
3756 | */
|
---|
3757 | RTSortShell(pRawDesc->pPartDescs, pRawDesc->cPartDescs, sizeof(pRawDesc->pPartDescs[0]), vmdkRawDescPartComp, NULL);
|
---|
3758 |
|
---|
3759 | /*
|
---|
3760 | * Check that we don't have overlapping descriptors. If we do, that's an
|
---|
3761 | * indication that the drive is corrupt or that the RTDvm code is buggy.
|
---|
3762 | */
|
---|
3763 | VDISKRAWPARTDESC const *paPartDescs = pRawDesc->pPartDescs;
|
---|
3764 | for (uint32_t i = 0; i < pRawDesc->cPartDescs; i++)
|
---|
3765 | {
|
---|
3766 | uint64_t offLast = paPartDescs[i].offStartInVDisk + paPartDescs[i].cbData;
|
---|
3767 | if (offLast <= paPartDescs[i].offStartInVDisk)
|
---|
3768 | return vdIfError(pImage->pIfError, VERR_FILESYSTEM_CORRUPT /*?*/, RT_SRC_POS,
|
---|
3769 | N_("VMDK: Image path: '%s'. Bogus partition descriptor #%u (%#RX64 LB %#RX64%s): Wrap around or zero"),
|
---|
3770 | pImage->pszFilename, i, paPartDescs[i].offStartInVDisk, paPartDescs[i].cbData,
|
---|
3771 | paPartDescs[i].pvPartitionData ? " (data)" : "");
|
---|
3772 | offLast -= 1;
|
---|
3773 |
|
---|
3774 | if (i + 1 < pRawDesc->cPartDescs && offLast >= paPartDescs[i + 1].offStartInVDisk)
|
---|
3775 | return vdIfError(pImage->pIfError, VERR_FILESYSTEM_CORRUPT /*?*/, RT_SRC_POS,
|
---|
3776 | N_("VMDK: Image path: '%s'. Partition descriptor #%u (%#RX64 LB %#RX64%s) overlaps with the next (%#RX64 LB %#RX64%s)"),
|
---|
3777 | pImage->pszFilename, i, paPartDescs[i].offStartInVDisk, paPartDescs[i].cbData,
|
---|
3778 | paPartDescs[i].pvPartitionData ? " (data)" : "", paPartDescs[i + 1].offStartInVDisk,
|
---|
3779 | paPartDescs[i + 1].cbData, paPartDescs[i + 1].pvPartitionData ? " (data)" : "");
|
---|
3780 | if (offLast >= cbSize)
|
---|
3781 | return vdIfError(pImage->pIfError, VERR_FILESYSTEM_CORRUPT /*?*/, RT_SRC_POS,
|
---|
3782 | N_("VMDK: Image path: '%s'. Partition descriptor #%u (%#RX64 LB %#RX64%s) goes beyond the end of the drive (%#RX64)"),
|
---|
3783 | pImage->pszFilename, i, paPartDescs[i].offStartInVDisk, paPartDescs[i].cbData,
|
---|
3784 | paPartDescs[i].pvPartitionData ? " (data)" : "", cbSize);
|
---|
3785 | }
|
---|
3786 |
|
---|
3787 | return VINF_SUCCESS;
|
---|
3788 | }
|
---|
3789 |
|
---|
3790 |
|
---|
3791 | #ifdef RT_OS_LINUX
|
---|
3792 | /**
|
---|
3793 | * Searches the dir specified in @a pszBlockDevDir for subdirectories with a
|
---|
3794 | * 'dev' file matching @a uDevToLocate.
|
---|
3795 | *
|
---|
3796 | * This is used both
|
---|
3797 | *
|
---|
3798 | * @returns IPRT status code, errors have been reported properly.
|
---|
3799 | * @param pImage For error reporting.
|
---|
3800 | * @param pszBlockDevDir Input: Path to the directory search under.
|
---|
3801 | * Output: Path to the directory containing information
|
---|
3802 | * for @a uDevToLocate.
|
---|
3803 | * @param cbBlockDevDir The size of the buffer @a pszBlockDevDir points to.
|
---|
3804 | * @param uDevToLocate The device number of the block device info dir to
|
---|
3805 | * locate.
|
---|
3806 | * @param pszDevToLocate For error reporting.
|
---|
3807 | */
|
---|
3808 | static int vmdkFindSysBlockDevPath(PVMDKIMAGE pImage, char *pszBlockDevDir, size_t cbBlockDevDir,
|
---|
3809 | dev_t uDevToLocate, const char *pszDevToLocate)
|
---|
3810 | {
|
---|
3811 | size_t const cchDir = RTPathEnsureTrailingSeparator(pszBlockDevDir, cbBlockDevDir);
|
---|
3812 | AssertReturn(cchDir > 0, VERR_BUFFER_OVERFLOW);
|
---|
3813 |
|
---|
3814 | RTDIR hDir = NIL_RTDIR;
|
---|
3815 | int rc = RTDirOpen(&hDir, pszBlockDevDir);
|
---|
3816 | if (RT_SUCCESS(rc))
|
---|
3817 | {
|
---|
3818 | for (;;)
|
---|
3819 | {
|
---|
3820 | RTDIRENTRY Entry;
|
---|
3821 | rc = RTDirRead(hDir, &Entry, NULL);
|
---|
3822 | if (RT_SUCCESS(rc))
|
---|
3823 | {
|
---|
3824 | /* We're interested in directories and symlinks. */
|
---|
3825 | if ( Entry.enmType == RTDIRENTRYTYPE_DIRECTORY
|
---|
3826 | || Entry.enmType == RTDIRENTRYTYPE_SYMLINK
|
---|
3827 | || Entry.enmType == RTDIRENTRYTYPE_UNKNOWN)
|
---|
3828 | {
|
---|
3829 | rc = RTStrCopy(&pszBlockDevDir[cchDir], cbBlockDevDir - cchDir, Entry.szName);
|
---|
3830 | AssertContinue(RT_SUCCESS(rc)); /* should not happen! */
|
---|
3831 |
|
---|
3832 | dev_t uThisDevNo = ~uDevToLocate;
|
---|
3833 | rc = RTLinuxSysFsReadDevNumFile(&uThisDevNo, "%s/dev", pszBlockDevDir);
|
---|
3834 | if (RT_SUCCESS(rc) && uThisDevNo == uDevToLocate)
|
---|
3835 | break;
|
---|
3836 | }
|
---|
3837 | }
|
---|
3838 | else
|
---|
3839 | {
|
---|
3840 | pszBlockDevDir[cchDir] = '\0';
|
---|
3841 | if (rc == VERR_NO_MORE_FILES)
|
---|
3842 | rc = vdIfError(pImage->pIfError, VERR_NOT_FOUND, RT_SRC_POS,
|
---|
3843 | N_("VMDK: Image path: '%s'. Failed to locate device corresponding to '%s' under '%s'"),
|
---|
3844 | pImage->pszFilename, pszDevToLocate, pszBlockDevDir);
|
---|
3845 | else
|
---|
3846 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
3847 | N_("VMDK: Image path: '%s'. RTDirRead failed enumerating '%s': %Rrc"),
|
---|
3848 | pImage->pszFilename, pszBlockDevDir, rc);
|
---|
3849 | break;
|
---|
3850 | }
|
---|
3851 | }
|
---|
3852 | RTDirClose(hDir);
|
---|
3853 | }
|
---|
3854 | else
|
---|
3855 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
3856 | N_("VMDK: Image path: '%s'. Failed to open dir '%s' for listing: %Rrc"),
|
---|
3857 | pImage->pszFilename, pszBlockDevDir, rc);
|
---|
3858 | return rc;
|
---|
3859 | }
|
---|
3860 | #endif /* RT_OS_LINUX */
|
---|
3861 |
|
---|
3862 | #ifdef RT_OS_FREEBSD
|
---|
3863 |
|
---|
3864 |
|
---|
3865 | /**
|
---|
3866 | * Reads the config data from the provider and returns offset and size
|
---|
3867 | *
|
---|
3868 | * @return IPRT status code
|
---|
3869 | * @param pProvider GEOM provider representing partition
|
---|
3870 | * @param pcbOffset Placeholder for the offset of the partition
|
---|
3871 | * @param pcbSize Placeholder for the size of the partition
|
---|
3872 | */
|
---|
3873 | static int vmdkReadPartitionsParamsFromProvider(gprovider *pProvider, uint64_t *pcbOffset, uint64_t *pcbSize)
|
---|
3874 | {
|
---|
3875 | gconfig *pConfEntry;
|
---|
3876 | int rc = VERR_NOT_FOUND;
|
---|
3877 |
|
---|
3878 | /*
|
---|
3879 | * Required parameters are located in the list containing key/value pairs.
|
---|
3880 | * Both key and value are in text form. Manuals tells nothing about the fact
|
---|
3881 | * that the both parameters should be present in the list. Thus, there are
|
---|
3882 | * cases when only one parameter is presented. To handle such cases we treat
|
---|
3883 | * absent params as zero allowing the caller decide the case is either correct
|
---|
3884 | * or an error.
|
---|
3885 | */
|
---|
3886 | uint64_t cbOffset = 0;
|
---|
3887 | uint64_t cbSize = 0;
|
---|
3888 | LIST_FOREACH(pConfEntry, &pProvider->lg_config, lg_config)
|
---|
3889 | {
|
---|
3890 | if (RTStrCmp(pConfEntry->lg_name, "offset") == 0)
|
---|
3891 | {
|
---|
3892 | cbOffset = RTStrToUInt64(pConfEntry->lg_val);
|
---|
3893 | rc = VINF_SUCCESS;
|
---|
3894 | }
|
---|
3895 | else if (RTStrCmp(pConfEntry->lg_name, "length") == 0)
|
---|
3896 | {
|
---|
3897 | cbSize = RTStrToUInt64(pConfEntry->lg_val);
|
---|
3898 | rc = VINF_SUCCESS;
|
---|
3899 | }
|
---|
3900 | }
|
---|
3901 | if (RT_SUCCESS(rc))
|
---|
3902 | {
|
---|
3903 | *pcbOffset = cbOffset;
|
---|
3904 | *pcbSize = cbSize;
|
---|
3905 | }
|
---|
3906 | return rc;
|
---|
3907 | }
|
---|
3908 |
|
---|
3909 |
|
---|
3910 | /**
|
---|
3911 | * Searches the partition specified by name and calculates its size and absolute offset.
|
---|
3912 | *
|
---|
3913 | * @return IPRT status code.
|
---|
3914 | * @param pParentClass Class containing pParentGeom
|
---|
3915 | * @param pszParentGeomName Name of the parent geom where we are looking for provider
|
---|
3916 | * @param pszProviderName Name of the provider we are looking for
|
---|
3917 | * @param pcbAbsoluteOffset Placeholder for the absolute offset of the partition, i.e. offset from the beginning of the disk
|
---|
3918 | * @param psbSize Placeholder for the size of the partition.
|
---|
3919 | */
|
---|
3920 | static int vmdkFindPartitionParamsByName(gclass *pParentClass, const char *pszParentGeomName, const char *pszProviderName,
|
---|
3921 | uint64_t *pcbAbsoluteOffset, uint64_t *pcbSize)
|
---|
3922 | {
|
---|
3923 | AssertReturn(pParentClass, VERR_INVALID_PARAMETER);
|
---|
3924 | AssertReturn(pszParentGeomName, VERR_INVALID_PARAMETER);
|
---|
3925 | AssertReturn(pszProviderName, VERR_INVALID_PARAMETER);
|
---|
3926 | AssertReturn(pcbAbsoluteOffset, VERR_INVALID_PARAMETER);
|
---|
3927 | AssertReturn(pcbSize, VERR_INVALID_PARAMETER);
|
---|
3928 |
|
---|
3929 | ggeom *pParentGeom;
|
---|
3930 | int rc = VERR_NOT_FOUND;
|
---|
3931 | LIST_FOREACH(pParentGeom, &pParentClass->lg_geom, lg_geom)
|
---|
3932 | {
|
---|
3933 | if (RTStrCmp(pParentGeom->lg_name, pszParentGeomName) == 0)
|
---|
3934 | {
|
---|
3935 | rc = VINF_SUCCESS;
|
---|
3936 | break;
|
---|
3937 | }
|
---|
3938 | }
|
---|
3939 | if (RT_FAILURE(rc))
|
---|
3940 | return rc;
|
---|
3941 |
|
---|
3942 | gprovider *pProvider;
|
---|
3943 | /*
|
---|
3944 | * First, go over providers without handling EBR or BSDLabel
|
---|
3945 | * partitions for case when looking provider is child
|
---|
3946 | * of the givng geom, to reduce searching time
|
---|
3947 | */
|
---|
3948 | LIST_FOREACH(pProvider, &pParentGeom->lg_provider, lg_provider)
|
---|
3949 | {
|
---|
3950 | if (RTStrCmp(pProvider->lg_name, pszProviderName) == 0)
|
---|
3951 | return vmdkReadPartitionsParamsFromProvider(pProvider, pcbAbsoluteOffset, pcbSize);
|
---|
3952 | }
|
---|
3953 |
|
---|
3954 | /*
|
---|
3955 | * No provider found. Go over the parent geom again
|
---|
3956 | * and make recursions if geom represents EBR or BSDLabel.
|
---|
3957 | * In this case given parent geom contains only EBR or BSDLabel
|
---|
3958 | * partition itself and their own partitions are in the separate
|
---|
3959 | * geoms. Also, partition offsets are relative to geom, so
|
---|
3960 | * we have to add offset from child provider with parent geoms
|
---|
3961 | * provider
|
---|
3962 | */
|
---|
3963 |
|
---|
3964 | LIST_FOREACH(pProvider, &pParentGeom->lg_provider, lg_provider)
|
---|
3965 | {
|
---|
3966 | uint64_t cbOffset = 0;
|
---|
3967 | uint64_t cbSize = 0;
|
---|
3968 | rc = vmdkReadPartitionsParamsFromProvider(pProvider, &cbOffset, &cbSize);
|
---|
3969 | if (RT_FAILURE(rc))
|
---|
3970 | return rc;
|
---|
3971 |
|
---|
3972 | uint64_t cbProviderOffset = 0;
|
---|
3973 | uint64_t cbProviderSize = 0;
|
---|
3974 | rc = vmdkFindPartitionParamsByName(pParentClass, pProvider->lg_name, pszProviderName, &cbProviderOffset, &cbProviderSize);
|
---|
3975 | if (RT_SUCCESS(rc))
|
---|
3976 | {
|
---|
3977 | *pcbAbsoluteOffset = cbOffset + cbProviderOffset;
|
---|
3978 | *pcbSize = cbProviderSize;
|
---|
3979 | return rc;
|
---|
3980 | }
|
---|
3981 | }
|
---|
3982 |
|
---|
3983 | return VERR_NOT_FOUND;
|
---|
3984 | }
|
---|
3985 | #endif
|
---|
3986 |
|
---|
3987 |
|
---|
3988 | /**
|
---|
3989 | * Attempts to verify the raw partition path.
|
---|
3990 | *
|
---|
3991 | * We don't want to trust RTDvm and the partition device node morphing blindly.
|
---|
3992 | */
|
---|
3993 | static int vmdkRawDescVerifyPartitionPath(PVMDKIMAGE pImage, PVDISKRAWPARTDESC pPartDesc, uint32_t idxPartition,
|
---|
3994 | const char *pszRawDrive, RTFILE hRawDrive, uint32_t cbSector, RTDVMVOLUME hVol)
|
---|
3995 | {
|
---|
3996 | RT_NOREF(pImage, pPartDesc, idxPartition, pszRawDrive, hRawDrive, cbSector, hVol);
|
---|
3997 |
|
---|
3998 | /*
|
---|
3999 | * Try open the raw partition device.
|
---|
4000 | */
|
---|
4001 | RTFILE hRawPart = NIL_RTFILE;
|
---|
4002 | int rc = RTFileOpen(&hRawPart, pPartDesc->pszRawDevice, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE);
|
---|
4003 | if (RT_FAILURE(rc))
|
---|
4004 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4005 | N_("VMDK: Image path: '%s'. Failed to open partition #%u on '%s' via '%s' (%Rrc)"),
|
---|
4006 | pImage->pszFilename, idxPartition, pszRawDrive, pPartDesc->pszRawDevice, rc);
|
---|
4007 |
|
---|
4008 | /*
|
---|
4009 | * Compare the partition UUID if we can get it.
|
---|
4010 | */
|
---|
4011 | #ifdef RT_OS_WINDOWS
|
---|
4012 | DWORD cbReturned;
|
---|
4013 |
|
---|
4014 | /* 1. Get the device numbers for both handles, they should have the same disk. */
|
---|
4015 | STORAGE_DEVICE_NUMBER DevNum1;
|
---|
4016 | RT_ZERO(DevNum1);
|
---|
4017 | if (!DeviceIoControl((HANDLE)RTFileToNative(hRawDrive), IOCTL_STORAGE_GET_DEVICE_NUMBER,
|
---|
4018 | NULL /*pvInBuffer*/, 0 /*cbInBuffer*/, &DevNum1, sizeof(DevNum1), &cbReturned, NULL /*pOverlapped*/))
|
---|
4019 | rc = vdIfError(pImage->pIfError, RTErrConvertFromWin32(GetLastError()), RT_SRC_POS,
|
---|
4020 | N_("VMDK: Image path: '%s'. IOCTL_STORAGE_GET_DEVICE_NUMBER failed on '%s': %u"),
|
---|
4021 | pImage->pszFilename, pszRawDrive, GetLastError());
|
---|
4022 |
|
---|
4023 | STORAGE_DEVICE_NUMBER DevNum2;
|
---|
4024 | RT_ZERO(DevNum2);
|
---|
4025 | if (!DeviceIoControl((HANDLE)RTFileToNative(hRawPart), IOCTL_STORAGE_GET_DEVICE_NUMBER,
|
---|
4026 | NULL /*pvInBuffer*/, 0 /*cbInBuffer*/, &DevNum2, sizeof(DevNum2), &cbReturned, NULL /*pOverlapped*/))
|
---|
4027 | rc = vdIfError(pImage->pIfError, RTErrConvertFromWin32(GetLastError()), RT_SRC_POS,
|
---|
4028 | N_("VMDK: Image path: '%s'. IOCTL_STORAGE_GET_DEVICE_NUMBER failed on '%s': %u"),
|
---|
4029 | pImage->pszFilename, pPartDesc->pszRawDevice, GetLastError());
|
---|
4030 | if ( RT_SUCCESS(rc)
|
---|
4031 | && ( DevNum1.DeviceNumber != DevNum2.DeviceNumber
|
---|
4032 | || DevNum1.DeviceType != DevNum2.DeviceType))
|
---|
4033 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4034 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s' (%#x != %#x || %#x != %#x)"),
|
---|
4035 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4036 | DevNum1.DeviceNumber, DevNum2.DeviceNumber, DevNum1.DeviceType, DevNum2.DeviceType);
|
---|
4037 | if (RT_SUCCESS(rc))
|
---|
4038 | {
|
---|
4039 | /* Get the partitions from the raw drive and match up with the volume info
|
---|
4040 | from RTDvm. The partition number is found in DevNum2. */
|
---|
4041 | DWORD cbNeeded = 0;
|
---|
4042 | if ( DeviceIoControl((HANDLE)RTFileToNative(hRawDrive), IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
|
---|
4043 | NULL /*pvInBuffer*/, 0 /*cbInBuffer*/, NULL, 0, &cbNeeded, NULL /*pOverlapped*/)
|
---|
4044 | || cbNeeded < RT_UOFFSETOF_DYN(DRIVE_LAYOUT_INFORMATION_EX, PartitionEntry[1]))
|
---|
4045 | cbNeeded = RT_UOFFSETOF_DYN(DRIVE_LAYOUT_INFORMATION_EX, PartitionEntry[64]);
|
---|
4046 | cbNeeded += sizeof(PARTITION_INFORMATION_EX) * 2; /* just in case */
|
---|
4047 | DRIVE_LAYOUT_INFORMATION_EX *pLayout = (DRIVE_LAYOUT_INFORMATION_EX *)RTMemTmpAllocZ(cbNeeded);
|
---|
4048 | if (pLayout)
|
---|
4049 | {
|
---|
4050 | cbReturned = 0;
|
---|
4051 | if (DeviceIoControl((HANDLE)RTFileToNative(hRawDrive), IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
|
---|
4052 | NULL /*pvInBuffer*/, 0 /*cbInBuffer*/, pLayout, cbNeeded, &cbReturned, NULL /*pOverlapped*/))
|
---|
4053 | {
|
---|
4054 | /* Find the entry with the given partition number (it's not an index, array contains empty MBR entries ++). */
|
---|
4055 | unsigned iEntry = 0;
|
---|
4056 | while ( iEntry < pLayout->PartitionCount
|
---|
4057 | && pLayout->PartitionEntry[iEntry].PartitionNumber != DevNum2.PartitionNumber)
|
---|
4058 | iEntry++;
|
---|
4059 | if (iEntry < pLayout->PartitionCount)
|
---|
4060 | {
|
---|
4061 | /* Compare the basics */
|
---|
4062 | PARTITION_INFORMATION_EX const * const pLayoutEntry = &pLayout->PartitionEntry[iEntry];
|
---|
4063 | if (pLayoutEntry->StartingOffset.QuadPart != (int64_t)pPartDesc->offStartInVDisk)
|
---|
4064 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4065 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': StartingOffset %RU64, expected %RU64"),
|
---|
4066 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4067 | pLayoutEntry->StartingOffset.QuadPart, pPartDesc->offStartInVDisk);
|
---|
4068 | else if (pLayoutEntry->PartitionLength.QuadPart != (int64_t)pPartDesc->cbData)
|
---|
4069 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4070 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': PartitionLength %RU64, expected %RU64"),
|
---|
4071 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4072 | pLayoutEntry->PartitionLength.QuadPart, pPartDesc->cbData);
|
---|
4073 | /** @todo We could compare the MBR type, GPT type and ID. */
|
---|
4074 | RT_NOREF(hVol);
|
---|
4075 | }
|
---|
4076 | else
|
---|
4077 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4078 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': PartitionCount (%#x vs %#x)"),
|
---|
4079 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4080 | DevNum2.PartitionNumber, pLayout->PartitionCount);
|
---|
4081 | # ifndef LOG_ENABLED
|
---|
4082 | if (RT_FAILURE(rc))
|
---|
4083 | # endif
|
---|
4084 | {
|
---|
4085 | LogRel(("VMDK: Windows reports %u partitions for '%s':\n", pLayout->PartitionCount, pszRawDrive));
|
---|
4086 | PARTITION_INFORMATION_EX const *pEntry = &pLayout->PartitionEntry[0];
|
---|
4087 | for (DWORD i = 0; i < pLayout->PartitionCount; i++, pEntry++)
|
---|
4088 | {
|
---|
4089 | LogRel(("VMDK: #%u/%u: %016RU64 LB %016RU64 style=%d rewrite=%d",
|
---|
4090 | i, pEntry->PartitionNumber, pEntry->StartingOffset.QuadPart, pEntry->PartitionLength.QuadPart,
|
---|
4091 | pEntry->PartitionStyle, pEntry->RewritePartition));
|
---|
4092 | if (pEntry->PartitionStyle == PARTITION_STYLE_MBR)
|
---|
4093 | LogRel((" type=%#x boot=%d rec=%d hidden=%u\n", pEntry->Mbr.PartitionType, pEntry->Mbr.BootIndicator,
|
---|
4094 | pEntry->Mbr.RecognizedPartition, pEntry->Mbr.HiddenSectors));
|
---|
4095 | else if (pEntry->PartitionStyle == PARTITION_STYLE_GPT)
|
---|
4096 | LogRel((" type=%RTuuid id=%RTuuid aatrib=%RX64 name=%.36ls\n", &pEntry->Gpt.PartitionType,
|
---|
4097 | &pEntry->Gpt.PartitionId, pEntry->Gpt.Attributes, &pEntry->Gpt.Name[0]));
|
---|
4098 | else
|
---|
4099 | LogRel(("\n"));
|
---|
4100 | }
|
---|
4101 | LogRel(("VMDK: Looked for partition #%u (%u, '%s') at %RU64 LB %RU64\n", DevNum2.PartitionNumber,
|
---|
4102 | idxPartition, pPartDesc->pszRawDevice, pPartDesc->offStartInVDisk, pPartDesc->cbData));
|
---|
4103 | }
|
---|
4104 | }
|
---|
4105 | else
|
---|
4106 | rc = vdIfError(pImage->pIfError, RTErrConvertFromWin32(GetLastError()), RT_SRC_POS,
|
---|
4107 | N_("VMDK: Image path: '%s'. IOCTL_DISK_GET_DRIVE_LAYOUT_EX failed on '%s': %u (cb %u, cbRet %u)"),
|
---|
4108 | pImage->pszFilename, pPartDesc->pszRawDevice, GetLastError(), cbNeeded, cbReturned);
|
---|
4109 | RTMemTmpFree(pLayout);
|
---|
4110 | }
|
---|
4111 | else
|
---|
4112 | rc = VERR_NO_TMP_MEMORY;
|
---|
4113 | }
|
---|
4114 |
|
---|
4115 | #elif defined(RT_OS_LINUX)
|
---|
4116 | RT_NOREF(hVol);
|
---|
4117 |
|
---|
4118 | /* Stat the two devices first to get their device numbers. (We probably
|
---|
4119 | could make some assumptions here about the major & minor number assignments
|
---|
4120 | for legacy nodes, but it doesn't hold up for nvme, so we'll skip that.) */
|
---|
4121 | struct stat StDrive, StPart;
|
---|
4122 | if (fstat((int)RTFileToNative(hRawDrive), &StDrive) != 0)
|
---|
4123 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4124 | N_("VMDK: Image path: '%s'. fstat failed on '%s': %d"), pImage->pszFilename, pszRawDrive, errno);
|
---|
4125 | else if (fstat((int)RTFileToNative(hRawPart), &StPart) != 0)
|
---|
4126 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4127 | N_("VMDK: Image path: '%s'. fstat failed on '%s': %d"), pImage->pszFilename, pPartDesc->pszRawDevice, errno);
|
---|
4128 | else
|
---|
4129 | {
|
---|
4130 | /* Scan the directories immediately under /sys/block/ for one with a
|
---|
4131 | 'dev' file matching the drive's device number: */
|
---|
4132 | char szSysPath[RTPATH_MAX];
|
---|
4133 | rc = RTLinuxConstructPath(szSysPath, sizeof(szSysPath), "block/");
|
---|
4134 | AssertRCReturn(rc, rc); /* this shall not fail */
|
---|
4135 | if (RTDirExists(szSysPath))
|
---|
4136 | {
|
---|
4137 | rc = vmdkFindSysBlockDevPath(pImage, szSysPath, sizeof(szSysPath), StDrive.st_rdev, pszRawDrive);
|
---|
4138 |
|
---|
4139 | /* Now, scan the directories under that again for a partition device
|
---|
4140 | matching the hRawPart device's number: */
|
---|
4141 | if (RT_SUCCESS(rc))
|
---|
4142 | rc = vmdkFindSysBlockDevPath(pImage, szSysPath, sizeof(szSysPath), StPart.st_rdev, pPartDesc->pszRawDevice);
|
---|
4143 |
|
---|
4144 | /* Having found the /sys/block/device/partition/ path, we can finally
|
---|
4145 | read the partition attributes and compare with hVol. */
|
---|
4146 | if (RT_SUCCESS(rc))
|
---|
4147 | {
|
---|
4148 | /* partition number: */
|
---|
4149 | int64_t iLnxPartition = 0;
|
---|
4150 | rc = RTLinuxSysFsReadIntFile(10, &iLnxPartition, "%s/partition", szSysPath);
|
---|
4151 | if (RT_SUCCESS(rc) && iLnxPartition != idxPartition)
|
---|
4152 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4153 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Partition number %RI64, expected %RU32"),
|
---|
4154 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, iLnxPartition, idxPartition);
|
---|
4155 | /* else: ignore failure? */
|
---|
4156 |
|
---|
4157 | /* start offset: */
|
---|
4158 | uint32_t const cbLnxSector = 512; /* It's hardcoded in the Linux kernel */
|
---|
4159 | if (RT_SUCCESS(rc))
|
---|
4160 | {
|
---|
4161 | int64_t offLnxStart = -1;
|
---|
4162 | rc = RTLinuxSysFsReadIntFile(10, &offLnxStart, "%s/start", szSysPath);
|
---|
4163 | offLnxStart *= cbLnxSector;
|
---|
4164 | if (RT_SUCCESS(rc) && offLnxStart != (int64_t)pPartDesc->offStartInVDisk)
|
---|
4165 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4166 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Start offset %RI64, expected %RU64"),
|
---|
4167 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, offLnxStart, pPartDesc->offStartInVDisk);
|
---|
4168 | /* else: ignore failure? */
|
---|
4169 | }
|
---|
4170 |
|
---|
4171 | /* the size: */
|
---|
4172 | if (RT_SUCCESS(rc))
|
---|
4173 | {
|
---|
4174 | int64_t cbLnxData = -1;
|
---|
4175 | rc = RTLinuxSysFsReadIntFile(10, &cbLnxData, "%s/size", szSysPath);
|
---|
4176 | cbLnxData *= cbLnxSector;
|
---|
4177 | if (RT_SUCCESS(rc) && cbLnxData != (int64_t)pPartDesc->cbData)
|
---|
4178 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4179 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Size %RI64, expected %RU64"),
|
---|
4180 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbLnxData, pPartDesc->cbData);
|
---|
4181 | /* else: ignore failure? */
|
---|
4182 | }
|
---|
4183 | }
|
---|
4184 | }
|
---|
4185 | /* else: We've got nothing to work on, so only do content comparison. */
|
---|
4186 | }
|
---|
4187 |
|
---|
4188 | #elif defined(RT_OS_FREEBSD)
|
---|
4189 | char szDriveDevName[256];
|
---|
4190 | char* pszDevName = fdevname_r(RTFileToNative(hRawDrive), szDriveDevName, 256);
|
---|
4191 | if (pszDevName == NULL)
|
---|
4192 | rc = vdIfError(pImage->pIfError, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
---|
4193 | N_("VMDK: Image path: '%s'. '%s' is not a drive path"), pImage->pszFilename, pszRawDrive);
|
---|
4194 | char szPartDevName[256];
|
---|
4195 | if (RT_SUCCESS(rc))
|
---|
4196 | {
|
---|
4197 | pszDevName = fdevname_r(RTFileToNative(hRawPart), szPartDevName, 256);
|
---|
4198 | if (pszDevName == NULL)
|
---|
4199 | rc = vdIfError(pImage->pIfError, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
---|
4200 | N_("VMDK: Image path: '%s'. '%s' is not a partition path"), pImage->pszFilename, pPartDesc->pszRawDevice);
|
---|
4201 | }
|
---|
4202 | if (RT_SUCCESS(rc))
|
---|
4203 | {
|
---|
4204 | gmesh geomMesh;
|
---|
4205 | int err = geom_gettree(&geomMesh);
|
---|
4206 | if (err == 0)
|
---|
4207 | {
|
---|
4208 | /* Find root class containg partitions info */
|
---|
4209 | gclass* pPartClass;
|
---|
4210 | LIST_FOREACH(pPartClass, &geomMesh.lg_class, lg_class)
|
---|
4211 | {
|
---|
4212 | if (RTStrCmp(pPartClass->lg_name, "PART") == 0)
|
---|
4213 | break;
|
---|
4214 | }
|
---|
4215 | if (pPartClass == NULL || RTStrCmp(pPartClass->lg_name, "PART") != 0)
|
---|
4216 | rc = vdIfError(pImage->pIfError, VERR_GENERAL_FAILURE, RT_SRC_POS,
|
---|
4217 | N_("VMDK: Image path: '%s'. 'PART' class not found in the GEOM tree"), pImage->pszFilename);
|
---|
4218 |
|
---|
4219 |
|
---|
4220 | if (RT_SUCCESS(rc))
|
---|
4221 | {
|
---|
4222 | /* Find provider representing partition device */
|
---|
4223 | uint64_t cbOffset;
|
---|
4224 | uint64_t cbSize;
|
---|
4225 | rc = vmdkFindPartitionParamsByName(pPartClass, szDriveDevName, szPartDevName, &cbOffset, &cbSize);
|
---|
4226 | if (RT_SUCCESS(rc))
|
---|
4227 | {
|
---|
4228 | if (cbOffset != pPartDesc->offStartInVDisk)
|
---|
4229 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4230 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Start offset %RU64, expected %RU64"),
|
---|
4231 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbOffset, pPartDesc->offStartInVDisk);
|
---|
4232 | if (cbSize != pPartDesc->cbData)
|
---|
4233 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4234 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Size %RU64, expected %RU64"),
|
---|
4235 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbSize, pPartDesc->cbData);
|
---|
4236 | }
|
---|
4237 | else
|
---|
4238 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4239 | N_("VMDK: Image path: '%s'. Error getting geom provider for the partition '%s' of the drive '%s' in the GEOM tree: %Rrc"),
|
---|
4240 | pImage->pszFilename, pPartDesc->pszRawDevice, pszRawDrive, rc);
|
---|
4241 | }
|
---|
4242 |
|
---|
4243 | geom_deletetree(&geomMesh);
|
---|
4244 | }
|
---|
4245 | else
|
---|
4246 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(err), RT_SRC_POS,
|
---|
4247 | N_("VMDK: Image path: '%s'. geom_gettree failed: %d"), pImage->pszFilename, err);
|
---|
4248 | }
|
---|
4249 |
|
---|
4250 | #elif defined(RT_OS_SOLARIS)
|
---|
4251 | RT_NOREF(hVol);
|
---|
4252 |
|
---|
4253 | dk_cinfo dkiDriveInfo;
|
---|
4254 | dk_cinfo dkiPartInfo;
|
---|
4255 | if (ioctl(RTFileToNative(hRawDrive), DKIOCINFO, (caddr_t)&dkiDriveInfo) == -1)
|
---|
4256 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4257 | N_("VMDK: Image path: '%s'. DKIOCINFO failed on '%s': %d"), pImage->pszFilename, pszRawDrive, errno);
|
---|
4258 | else if (ioctl(RTFileToNative(hRawPart), DKIOCINFO, (caddr_t)&dkiPartInfo) == -1)
|
---|
4259 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4260 | N_("VMDK: Image path: '%s'. DKIOCINFO failed on '%s': %d"), pImage->pszFilename, pszRawDrive, errno);
|
---|
4261 | else if ( dkiDriveInfo.dki_ctype != dkiPartInfo.dki_ctype
|
---|
4262 | || dkiDriveInfo.dki_cnum != dkiPartInfo.dki_cnum
|
---|
4263 | || dkiDriveInfo.dki_addr != dkiPartInfo.dki_addr
|
---|
4264 | || dkiDriveInfo.dki_unit != dkiPartInfo.dki_unit
|
---|
4265 | || dkiDriveInfo.dki_slave != dkiPartInfo.dki_slave)
|
---|
4266 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4267 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s' (%#x != %#x || %#x != %#x || %#x != %#x || %#x != %#x || %#x != %#x)"),
|
---|
4268 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4269 | dkiDriveInfo.dki_ctype, dkiPartInfo.dki_ctype, dkiDriveInfo.dki_cnum, dkiPartInfo.dki_cnum,
|
---|
4270 | dkiDriveInfo.dki_addr, dkiPartInfo.dki_addr, dkiDriveInfo.dki_unit, dkiPartInfo.dki_unit,
|
---|
4271 | dkiDriveInfo.dki_slave, dkiPartInfo.dki_slave);
|
---|
4272 | else
|
---|
4273 | {
|
---|
4274 | uint64_t cbOffset = 0;
|
---|
4275 | uint64_t cbSize = 0;
|
---|
4276 | dk_gpt *pEfi = NULL;
|
---|
4277 | int idxEfiPart = efi_alloc_and_read(RTFileToNative(hRawPart), &pEfi);
|
---|
4278 | if (idxEfiPart >= 0)
|
---|
4279 | {
|
---|
4280 | if ((uint32_t)dkiPartInfo.dki_partition + 1 == idxPartition)
|
---|
4281 | {
|
---|
4282 | cbOffset = pEfi->efi_parts[idxEfiPart].p_start * pEfi->efi_lbasize;
|
---|
4283 | cbSize = pEfi->efi_parts[idxEfiPart].p_size * pEfi->efi_lbasize;
|
---|
4284 | }
|
---|
4285 | else
|
---|
4286 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4287 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s' (%#x != %#x)"),
|
---|
4288 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4289 | idxPartition, (uint32_t)dkiPartInfo.dki_partition + 1);
|
---|
4290 | efi_free(pEfi);
|
---|
4291 | }
|
---|
4292 | else
|
---|
4293 | {
|
---|
4294 | /*
|
---|
4295 | * Manual says the efi_alloc_and_read returns VT_EINVAL if no EFI partition table found.
|
---|
4296 | * Actually, the function returns any error, e.g. VT_ERROR. Thus, we are not sure, is it
|
---|
4297 | * real error or just no EFI table found. Therefore, let's try to obtain partition info
|
---|
4298 | * using another way. If there is an error, it returns errno which will be handled below.
|
---|
4299 | */
|
---|
4300 |
|
---|
4301 | uint32_t numPartition = (uint32_t)dkiPartInfo.dki_partition;
|
---|
4302 | if (numPartition > NDKMAP)
|
---|
4303 | numPartition -= NDKMAP;
|
---|
4304 | if (numPartition != idxPartition)
|
---|
4305 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4306 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s' (%#x != %#x)"),
|
---|
4307 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4308 | idxPartition, numPartition);
|
---|
4309 | else
|
---|
4310 | {
|
---|
4311 | dk_minfo_ext mediaInfo;
|
---|
4312 | if (ioctl(RTFileToNative(hRawPart), DKIOCGMEDIAINFOEXT, (caddr_t)&mediaInfo) == -1)
|
---|
4313 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4314 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s'. Can not obtain partition info: %d"),
|
---|
4315 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4316 | else
|
---|
4317 | {
|
---|
4318 | extpart_info extPartInfo;
|
---|
4319 | if (ioctl(RTFileToNative(hRawPart), DKIOCEXTPARTINFO, (caddr_t)&extPartInfo) != -1)
|
---|
4320 | {
|
---|
4321 | cbOffset = (uint64_t)extPartInfo.p_start * mediaInfo.dki_lbsize;
|
---|
4322 | cbSize = (uint64_t)extPartInfo.p_length * mediaInfo.dki_lbsize;
|
---|
4323 | }
|
---|
4324 | else
|
---|
4325 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4326 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s'. Can not obtain partition info: %d"),
|
---|
4327 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4328 | }
|
---|
4329 | }
|
---|
4330 | }
|
---|
4331 | if (RT_SUCCESS(rc) && cbOffset != pPartDesc->offStartInVDisk)
|
---|
4332 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4333 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Start offset %RI64, expected %RU64"),
|
---|
4334 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbOffset, pPartDesc->offStartInVDisk);
|
---|
4335 |
|
---|
4336 | if (RT_SUCCESS(rc) && cbSize != pPartDesc->cbData)
|
---|
4337 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4338 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Size %RI64, expected %RU64"),
|
---|
4339 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbSize, pPartDesc->cbData);
|
---|
4340 | }
|
---|
4341 |
|
---|
4342 | #elif defined(RT_OS_DARWIN)
|
---|
4343 | /* Stat the drive get its device number. */
|
---|
4344 | struct stat StDrive;
|
---|
4345 | if (fstat((int)RTFileToNative(hRawDrive), &StDrive) != 0)
|
---|
4346 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4347 | N_("VMDK: Image path: '%s'. fstat failed on '%s' (errno=%d)"), pImage->pszFilename, pszRawDrive, errno);
|
---|
4348 | else
|
---|
4349 | {
|
---|
4350 | if (ioctl(RTFileToNative(hRawPart), DKIOCLOCKPHYSICALEXTENTS, NULL) == -1)
|
---|
4351 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4352 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s': Unable to lock the partition (errno=%d)"),
|
---|
4353 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4354 | else
|
---|
4355 | {
|
---|
4356 | uint32_t cbBlockSize = 0;
|
---|
4357 | uint64_t cbOffset = 0;
|
---|
4358 | uint64_t cbSize = 0;
|
---|
4359 | if (ioctl(RTFileToNative(hRawPart), DKIOCGETBLOCKSIZE, (caddr_t)&cbBlockSize) == -1)
|
---|
4360 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4361 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s': Unable to obtain the sector size of the partition (errno=%d)"),
|
---|
4362 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4363 | else if (ioctl(RTFileToNative(hRawPart), DKIOCGETBASE, (caddr_t)&cbOffset) == -1)
|
---|
4364 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4365 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s': Unable to obtain the start offset of the partition (errno=%d)"),
|
---|
4366 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4367 | else if (ioctl(RTFileToNative(hRawPart), DKIOCGETBLOCKCOUNT, (caddr_t)&cbSize) == -1)
|
---|
4368 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4369 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s': Unable to obtain the size of the partition (errno=%d)"),
|
---|
4370 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4371 | else
|
---|
4372 | {
|
---|
4373 | cbSize *= (uint64_t)cbBlockSize;
|
---|
4374 | dk_physical_extent_t dkPartExtent = {0};
|
---|
4375 | dkPartExtent.offset = 0;
|
---|
4376 | dkPartExtent.length = cbSize;
|
---|
4377 | if (ioctl(RTFileToNative(hRawPart), DKIOCGETPHYSICALEXTENT, (caddr_t)&dkPartExtent) == -1)
|
---|
4378 | rc = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4379 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s': Unable to obtain partition info (errno=%d)"),
|
---|
4380 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4381 | else
|
---|
4382 | {
|
---|
4383 | if (dkPartExtent.dev != StDrive.st_rdev)
|
---|
4384 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4385 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Drive does not contain the partition"),
|
---|
4386 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive);
|
---|
4387 | else if (cbOffset != pPartDesc->offStartInVDisk)
|
---|
4388 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4389 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Start offset %RU64, expected %RU64"),
|
---|
4390 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbOffset, pPartDesc->offStartInVDisk);
|
---|
4391 | else if (cbSize != pPartDesc->cbData)
|
---|
4392 | rc = vdIfError(pImage->pIfError, VERR_MISMATCH, RT_SRC_POS,
|
---|
4393 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s': Size %RU64, expected %RU64"),
|
---|
4394 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cbSize, pPartDesc->cbData);
|
---|
4395 | }
|
---|
4396 | }
|
---|
4397 |
|
---|
4398 | if (ioctl(RTFileToNative(hRawPart), DKIOCUNLOCKPHYSICALEXTENTS, NULL) == -1)
|
---|
4399 | {
|
---|
4400 | int rc2 = vdIfError(pImage->pIfError, RTErrConvertFromErrno(errno), RT_SRC_POS,
|
---|
4401 | N_("VMDK: Image path: '%s'. Partition #%u number ('%s') verification failed on '%s': Unable to unlock the partition (errno=%d)"),
|
---|
4402 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, errno);
|
---|
4403 | if (RT_SUCCESS(rc))
|
---|
4404 | rc = rc2;
|
---|
4405 | }
|
---|
4406 | }
|
---|
4407 | }
|
---|
4408 |
|
---|
4409 | #else
|
---|
4410 | RT_NOREF(hVol); /* PORTME */
|
---|
4411 | rc = VERR_NOT_SUPPORTED;
|
---|
4412 | #endif
|
---|
4413 | if (RT_SUCCESS(rc))
|
---|
4414 | {
|
---|
4415 | /*
|
---|
4416 | * Compare the first 32 sectors of the partition.
|
---|
4417 | *
|
---|
4418 | * This might not be conclusive, but for partitions formatted with the more
|
---|
4419 | * common file systems it should be as they have a superblock copy at or near
|
---|
4420 | * the start of the partition (fat, fat32, ntfs, and ext4 does at least).
|
---|
4421 | */
|
---|
4422 | size_t const cbToCompare = (size_t)RT_MIN(pPartDesc->cbData / cbSector, 32) * cbSector;
|
---|
4423 | uint8_t *pbSector1 = (uint8_t *)RTMemTmpAlloc(cbToCompare * 2);
|
---|
4424 | if (pbSector1 != NULL)
|
---|
4425 | {
|
---|
4426 | uint8_t *pbSector2 = pbSector1 + cbToCompare;
|
---|
4427 |
|
---|
4428 | /* Do the comparing, we repeat if it fails and the data might be volatile. */
|
---|
4429 | uint64_t uPrevCrc1 = 0;
|
---|
4430 | uint64_t uPrevCrc2 = 0;
|
---|
4431 | uint32_t cStable = 0;
|
---|
4432 | for (unsigned iTry = 0; iTry < 256; iTry++)
|
---|
4433 | {
|
---|
4434 | rc = RTFileReadAt(hRawDrive, pPartDesc->offStartInVDisk, pbSector1, cbToCompare, NULL);
|
---|
4435 | if (RT_SUCCESS(rc))
|
---|
4436 | {
|
---|
4437 | rc = RTFileReadAt(hRawPart, pPartDesc->offStartInDevice, pbSector2, cbToCompare, NULL);
|
---|
4438 | if (RT_SUCCESS(rc))
|
---|
4439 | {
|
---|
4440 | if (memcmp(pbSector1, pbSector2, cbToCompare) != 0)
|
---|
4441 | {
|
---|
4442 | rc = VERR_MISMATCH;
|
---|
4443 |
|
---|
4444 | /* Do data stability checks before repeating: */
|
---|
4445 | uint64_t const uCrc1 = RTCrc64(pbSector1, cbToCompare);
|
---|
4446 | uint64_t const uCrc2 = RTCrc64(pbSector2, cbToCompare);
|
---|
4447 | if ( uPrevCrc1 != uCrc1
|
---|
4448 | || uPrevCrc2 != uCrc2)
|
---|
4449 | cStable = 0;
|
---|
4450 | else if (++cStable > 4)
|
---|
4451 | break;
|
---|
4452 | uPrevCrc1 = uCrc1;
|
---|
4453 | uPrevCrc2 = uCrc2;
|
---|
4454 | continue;
|
---|
4455 | }
|
---|
4456 | rc = VINF_SUCCESS;
|
---|
4457 | }
|
---|
4458 | else
|
---|
4459 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4460 | N_("VMDK: Image path: '%s'. Error reading %zu bytes from '%s' at offset %RU64 (%Rrc)"),
|
---|
4461 | pImage->pszFilename, cbToCompare, pPartDesc->pszRawDevice, pPartDesc->offStartInDevice, rc);
|
---|
4462 | }
|
---|
4463 | else
|
---|
4464 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4465 | N_("VMDK: Image path: '%s'. Error reading %zu bytes from '%s' at offset %RU64 (%Rrc)"),
|
---|
4466 | pImage->pszFilename, cbToCompare, pszRawDrive, pPartDesc->offStartInVDisk, rc);
|
---|
4467 | break;
|
---|
4468 | }
|
---|
4469 | if (rc == VERR_MISMATCH)
|
---|
4470 | {
|
---|
4471 | /* Find the first mismatching bytes: */
|
---|
4472 | size_t offMissmatch = 0;
|
---|
4473 | while (offMissmatch < cbToCompare && pbSector1[offMissmatch] == pbSector2[offMissmatch])
|
---|
4474 | offMissmatch++;
|
---|
4475 | int cbSample = (int)RT_MIN(cbToCompare - offMissmatch, 16);
|
---|
4476 |
|
---|
4477 | if (cStable > 0)
|
---|
4478 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4479 | N_("VMDK: Image path: '%s'. Partition #%u path ('%s') verification failed on '%s' (cStable=%d @%#zx: %.*Rhxs vs %.*Rhxs)"),
|
---|
4480 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive, cStable,
|
---|
4481 | offMissmatch, cbSample, &pbSector1[offMissmatch], cbSample, &pbSector2[offMissmatch]);
|
---|
4482 | else
|
---|
4483 | {
|
---|
4484 | LogRel(("VMDK: Image path: '%s'. Partition #%u path ('%s') verification undecided on '%s' because of unstable data! (@%#zx: %.*Rhxs vs %.*Rhxs)\n",
|
---|
4485 | pImage->pszFilename, idxPartition, pPartDesc->pszRawDevice, pszRawDrive,
|
---|
4486 | offMissmatch, cbSample, &pbSector1[offMissmatch], cbSample, &pbSector2[offMissmatch]));
|
---|
4487 | rc = -rc;
|
---|
4488 | }
|
---|
4489 | }
|
---|
4490 |
|
---|
4491 | RTMemTmpFree(pbSector1);
|
---|
4492 | }
|
---|
4493 | else
|
---|
4494 | rc = vdIfError(pImage->pIfError, VERR_NO_TMP_MEMORY, RT_SRC_POS,
|
---|
4495 | N_("VMDK: Image path: '%s'. Failed to allocate %zu bytes for a temporary read buffer\n"),
|
---|
4496 | pImage->pszFilename, cbToCompare * 2);
|
---|
4497 | }
|
---|
4498 | RTFileClose(hRawPart);
|
---|
4499 | return rc;
|
---|
4500 | }
|
---|
4501 |
|
---|
4502 | #ifdef RT_OS_WINDOWS
|
---|
4503 | /**
|
---|
4504 | * Construct the device name for the given partition number.
|
---|
4505 | */
|
---|
4506 | static int vmdkRawDescWinMakePartitionName(PVMDKIMAGE pImage, const char *pszRawDrive, RTFILE hRawDrive, uint32_t idxPartition,
|
---|
4507 | char **ppszRawPartition)
|
---|
4508 | {
|
---|
4509 | int rc = VINF_SUCCESS;
|
---|
4510 | DWORD cbReturned = 0;
|
---|
4511 | STORAGE_DEVICE_NUMBER DevNum;
|
---|
4512 | RT_ZERO(DevNum);
|
---|
4513 | if (DeviceIoControl((HANDLE)RTFileToNative(hRawDrive), IOCTL_STORAGE_GET_DEVICE_NUMBER,
|
---|
4514 | NULL /*pvInBuffer*/, 0 /*cbInBuffer*/, &DevNum, sizeof(DevNum), &cbReturned, NULL /*pOverlapped*/))
|
---|
4515 | RTStrAPrintf(ppszRawPartition, "\\\\.\\Harddisk%uPartition%u", DevNum.DeviceNumber, idxPartition);
|
---|
4516 | else
|
---|
4517 | rc = vdIfError(pImage->pIfError, RTErrConvertFromWin32(GetLastError()), RT_SRC_POS,
|
---|
4518 | N_("VMDK: Image path: '%s'. IOCTL_STORAGE_GET_DEVICE_NUMBER failed on '%s': %u"),
|
---|
4519 | pImage->pszFilename, pszRawDrive, GetLastError());
|
---|
4520 | return rc;
|
---|
4521 | }
|
---|
4522 | #endif /* RT_OS_WINDOWS */
|
---|
4523 |
|
---|
4524 | /**
|
---|
4525 | * Worker for vmdkMakeRawDescriptor that adds partition descriptors when the
|
---|
4526 | * 'Partitions' configuration value is present.
|
---|
4527 | *
|
---|
4528 | * @returns VBox status code, error message has been set on failure.
|
---|
4529 | *
|
---|
4530 | * @note Caller is assumed to clean up @a pRawDesc and release
|
---|
4531 | * @a *phVolToRelease.
|
---|
4532 | * @internal
|
---|
4533 | */
|
---|
4534 | static int vmdkRawDescDoPartitions(PVMDKIMAGE pImage, RTDVM hVolMgr, PVDISKRAW pRawDesc,
|
---|
4535 | RTFILE hRawDrive, const char *pszRawDrive, uint32_t cbSector,
|
---|
4536 | uint32_t fPartitions, uint32_t fPartitionsReadOnly, bool fRelative,
|
---|
4537 | PRTDVMVOLUME phVolToRelease)
|
---|
4538 | {
|
---|
4539 | *phVolToRelease = NIL_RTDVMVOLUME;
|
---|
4540 |
|
---|
4541 | /* Check sanity/understanding. */
|
---|
4542 | Assert(fPartitions);
|
---|
4543 | Assert((fPartitions & fPartitionsReadOnly) == fPartitionsReadOnly); /* RO should be a sub-set */
|
---|
4544 |
|
---|
4545 | /*
|
---|
4546 | * Allocate on descriptor for each volume up front.
|
---|
4547 | */
|
---|
4548 | uint32_t const cVolumes = RTDvmMapGetValidVolumes(hVolMgr);
|
---|
4549 |
|
---|
4550 | PVDISKRAWPARTDESC paPartDescs = NULL;
|
---|
4551 | int rc = vmdkRawDescAppendPartDesc(pImage, pRawDesc, cVolumes, &paPartDescs);
|
---|
4552 | AssertRCReturn(rc, rc);
|
---|
4553 |
|
---|
4554 | /*
|
---|
4555 | * Enumerate the partitions (volumes) on the disk and create descriptors for each of them.
|
---|
4556 | */
|
---|
4557 | uint32_t fPartitionsLeft = fPartitions;
|
---|
4558 | RTDVMVOLUME hVol = NIL_RTDVMVOLUME; /* the current volume, needed for getting the next. */
|
---|
4559 | for (uint32_t i = 0; i < cVolumes; i++)
|
---|
4560 | {
|
---|
4561 | /*
|
---|
4562 | * Get the next/first volume and release the current.
|
---|
4563 | */
|
---|
4564 | RTDVMVOLUME hVolNext = NIL_RTDVMVOLUME;
|
---|
4565 | if (i == 0)
|
---|
4566 | rc = RTDvmMapQueryFirstVolume(hVolMgr, &hVolNext);
|
---|
4567 | else
|
---|
4568 | rc = RTDvmMapQueryNextVolume(hVolMgr, hVol, &hVolNext);
|
---|
4569 | if (RT_FAILURE(rc))
|
---|
4570 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4571 | N_("VMDK: Image path: '%s'. Volume enumeration failed at volume #%u on '%s' (%Rrc)"),
|
---|
4572 | pImage->pszFilename, i, pszRawDrive, rc);
|
---|
4573 | uint32_t cRefs = RTDvmVolumeRelease(hVol);
|
---|
4574 | Assert(cRefs != UINT32_MAX); RT_NOREF(cRefs);
|
---|
4575 | *phVolToRelease = hVol = hVolNext;
|
---|
4576 |
|
---|
4577 | /*
|
---|
4578 | * Depending on the fPartitions selector and associated read-only mask,
|
---|
4579 | * the guest either gets read-write or read-only access (bits set)
|
---|
4580 | * or no access (selector bit clear, access directed to the VMDK).
|
---|
4581 | */
|
---|
4582 | paPartDescs[i].cbData = RTDvmVolumeGetSize(hVol);
|
---|
4583 |
|
---|
4584 | uint64_t offVolumeEndIgnored = 0;
|
---|
4585 | rc = RTDvmVolumeQueryRange(hVol, &paPartDescs[i].offStartInVDisk, &offVolumeEndIgnored);
|
---|
4586 | if (RT_FAILURE(rc))
|
---|
4587 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4588 | N_("VMDK: Image path: '%s'. Failed to get location of volume #%u on '%s' (%Rrc)"),
|
---|
4589 | pImage->pszFilename, i, pszRawDrive, rc);
|
---|
4590 | Assert(paPartDescs[i].cbData == offVolumeEndIgnored + 1 - paPartDescs[i].offStartInVDisk);
|
---|
4591 |
|
---|
4592 | /* Note! The index must match IHostDrivePartition::number. */
|
---|
4593 | uint32_t idxPartition = RTDvmVolumeGetIndex(hVol, RTDVMVOLIDX_HOST);
|
---|
4594 | if ( idxPartition < 32
|
---|
4595 | && (fPartitions & RT_BIT_32(idxPartition)))
|
---|
4596 | {
|
---|
4597 | fPartitionsLeft &= ~RT_BIT_32(idxPartition);
|
---|
4598 | if (fPartitionsReadOnly & RT_BIT_32(idxPartition))
|
---|
4599 | paPartDescs[i].uFlags |= VDISKRAW_READONLY;
|
---|
4600 |
|
---|
4601 | if (!fRelative)
|
---|
4602 | {
|
---|
4603 | /*
|
---|
4604 | * Accessing the drive thru the main device node (pRawDesc->pszRawDisk).
|
---|
4605 | */
|
---|
4606 | paPartDescs[i].offStartInDevice = paPartDescs[i].offStartInVDisk;
|
---|
4607 | paPartDescs[i].pszRawDevice = RTStrDup(pszRawDrive);
|
---|
4608 | AssertPtrReturn(paPartDescs[i].pszRawDevice, VERR_NO_STR_MEMORY);
|
---|
4609 | }
|
---|
4610 | else
|
---|
4611 | {
|
---|
4612 | /*
|
---|
4613 | * Relative means access the partition data via the device node for that
|
---|
4614 | * partition, allowing the sysadmin/OS to allow a user access to individual
|
---|
4615 | * partitions without necessarily being able to compromise the host OS.
|
---|
4616 | * Obviously, the creation of the VMDK requires read access to the main
|
---|
4617 | * device node for the drive, but that's a one-time thing and can be done
|
---|
4618 | * by the sysadmin. Here data starts at offset zero in the device node.
|
---|
4619 | */
|
---|
4620 | paPartDescs[i].offStartInDevice = 0;
|
---|
4621 |
|
---|
4622 | #if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
|
---|
4623 | /* /dev/rdisk1 -> /dev/rdisk1s2 (s=slice) */
|
---|
4624 | RTStrAPrintf(&paPartDescs[i].pszRawDevice, "%ss%u", pszRawDrive, idxPartition);
|
---|
4625 | #elif defined(RT_OS_LINUX)
|
---|
4626 | /* Two naming schemes here: /dev/nvme0n1 -> /dev/nvme0n1p1; /dev/sda -> /dev/sda1 */
|
---|
4627 | RTStrAPrintf(&paPartDescs[i].pszRawDevice,
|
---|
4628 | RT_C_IS_DIGIT(pszRawDrive[strlen(pszRawDrive) - 1]) ? "%sp%u" : "%s%u", pszRawDrive, idxPartition);
|
---|
4629 | #elif defined(RT_OS_WINDOWS)
|
---|
4630 | rc = vmdkRawDescWinMakePartitionName(pImage, pszRawDrive, hRawDrive, idxPartition, &paPartDescs[i].pszRawDevice);
|
---|
4631 | AssertRCReturn(rc, rc);
|
---|
4632 | #elif defined(RT_OS_SOLARIS)
|
---|
4633 | if (pRawDesc->enmPartitioningType == VDISKPARTTYPE_MBR)
|
---|
4634 | {
|
---|
4635 | /*
|
---|
4636 | * MBR partitions have device nodes in form /dev/(r)dsk/cXtYdZpK
|
---|
4637 | * where X is the controller,
|
---|
4638 | * Y is target (SCSI device number),
|
---|
4639 | * Z is disk number,
|
---|
4640 | * K is partition number,
|
---|
4641 | * where p0 is the whole disk
|
---|
4642 | * p1-pN are the partitions of the disk
|
---|
4643 | */
|
---|
4644 | const char *pszRawDrivePath = pszRawDrive;
|
---|
4645 | char szDrivePath[RTPATH_MAX];
|
---|
4646 | size_t cbRawDrive = strlen(pszRawDrive);
|
---|
4647 | if ( cbRawDrive > 1 && strcmp(&pszRawDrive[cbRawDrive - 2], "p0") == 0)
|
---|
4648 | {
|
---|
4649 | memcpy(szDrivePath, pszRawDrive, cbRawDrive - 2);
|
---|
4650 | szDrivePath[cbRawDrive - 2] = '\0';
|
---|
4651 | pszRawDrivePath = szDrivePath;
|
---|
4652 | }
|
---|
4653 | RTStrAPrintf(&paPartDescs[i].pszRawDevice, "%sp%u", pszRawDrivePath, idxPartition);
|
---|
4654 | }
|
---|
4655 | else /* GPT */
|
---|
4656 | {
|
---|
4657 | /*
|
---|
4658 | * GPT partitions have device nodes in form /dev/(r)dsk/cXtYdZsK
|
---|
4659 | * where X is the controller,
|
---|
4660 | * Y is target (SCSI device number),
|
---|
4661 | * Z is disk number,
|
---|
4662 | * K is partition number, zero based. Can be only from 0 to 6.
|
---|
4663 | * Thus, only partitions numbered 0 through 6 have device nodes.
|
---|
4664 | */
|
---|
4665 | if (idxPartition > 7)
|
---|
4666 | return vdIfError(pImage->pIfError, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
---|
4667 | N_("VMDK: Image path: '%s'. the partition #%u on '%s' has no device node and can not be specified with 'Relative' property"),
|
---|
4668 | pImage->pszFilename, idxPartition, pszRawDrive);
|
---|
4669 | RTStrAPrintf(&paPartDescs[i].pszRawDevice, "%ss%u", pszRawDrive, idxPartition - 1);
|
---|
4670 | }
|
---|
4671 | #else
|
---|
4672 | AssertFailedReturn(VERR_INTERNAL_ERROR_4); /* The option parsing code should have prevented this - PORTME */
|
---|
4673 | #endif
|
---|
4674 | AssertPtrReturn(paPartDescs[i].pszRawDevice, VERR_NO_STR_MEMORY);
|
---|
4675 |
|
---|
4676 | rc = vmdkRawDescVerifyPartitionPath(pImage, &paPartDescs[i], idxPartition, pszRawDrive, hRawDrive, cbSector, hVol);
|
---|
4677 | AssertRCReturn(rc, rc);
|
---|
4678 | }
|
---|
4679 | }
|
---|
4680 | else
|
---|
4681 | {
|
---|
4682 | /* Not accessible to the guest. */
|
---|
4683 | paPartDescs[i].offStartInDevice = 0;
|
---|
4684 | paPartDescs[i].pszRawDevice = NULL;
|
---|
4685 | }
|
---|
4686 | } /* for each volume */
|
---|
4687 |
|
---|
4688 | RTDvmVolumeRelease(hVol);
|
---|
4689 | *phVolToRelease = NIL_RTDVMVOLUME;
|
---|
4690 |
|
---|
4691 | /*
|
---|
4692 | * Check that we found all the partitions the user selected.
|
---|
4693 | */
|
---|
4694 | if (fPartitionsLeft)
|
---|
4695 | {
|
---|
4696 | char szLeft[3 * sizeof(fPartitions) * 8];
|
---|
4697 | size_t cchLeft = 0;
|
---|
4698 | for (unsigned i = 0; i < sizeof(fPartitions) * 8; i++)
|
---|
4699 | if (fPartitionsLeft & RT_BIT_32(i))
|
---|
4700 | cchLeft += RTStrPrintf(&szLeft[cchLeft], sizeof(szLeft) - cchLeft, cchLeft ? "%u" : ",%u", i);
|
---|
4701 | return vdIfError(pImage->pIfError, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
---|
4702 | N_("VMDK: Image path: '%s'. Not all the specified partitions for drive '%s' was found: %s"),
|
---|
4703 | pImage->pszFilename, pszRawDrive, szLeft);
|
---|
4704 | }
|
---|
4705 |
|
---|
4706 | return VINF_SUCCESS;
|
---|
4707 | }
|
---|
4708 |
|
---|
4709 | /**
|
---|
4710 | * Worker for vmdkMakeRawDescriptor that adds partition descriptors with copies
|
---|
4711 | * of the partition tables and associated padding areas when the 'Partitions'
|
---|
4712 | * configuration value is present.
|
---|
4713 | *
|
---|
4714 | * The guest is not allowed access to the partition tables, however it needs
|
---|
4715 | * them to be able to access the drive. So, create descriptors for each of the
|
---|
4716 | * tables and attach the current disk content. vmdkCreateRawImage() will later
|
---|
4717 | * write the content to the VMDK. Any changes the guest later makes to the
|
---|
4718 | * partition tables will then go to the VMDK copy, rather than the host drive.
|
---|
4719 | *
|
---|
4720 | * @returns VBox status code, error message has been set on failure.
|
---|
4721 | *
|
---|
4722 | * @note Caller is assumed to clean up @a pRawDesc
|
---|
4723 | * @internal
|
---|
4724 | */
|
---|
4725 | static int vmdkRawDescDoCopyPartitionTables(PVMDKIMAGE pImage, RTDVM hVolMgr, PVDISKRAW pRawDesc,
|
---|
4726 | const char *pszRawDrive, RTFILE hRawDrive, void *pvBootSector, size_t cbBootSector)
|
---|
4727 | {
|
---|
4728 | /*
|
---|
4729 | * Query the locations.
|
---|
4730 | */
|
---|
4731 | /* Determin how many locations there are: */
|
---|
4732 | size_t cLocations = 0;
|
---|
4733 | int rc = RTDvmMapQueryTableLocations(hVolMgr, RTDVMMAPQTABLOC_F_INCLUDE_LEGACY, NULL, 0, &cLocations);
|
---|
4734 | if (rc != VERR_BUFFER_OVERFLOW)
|
---|
4735 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4736 | N_("VMDK: Image path: '%s'. RTDvmMapQueryTableLocations failed on '%s' (%Rrc)"),
|
---|
4737 | pImage->pszFilename, pszRawDrive, rc);
|
---|
4738 | AssertReturn(cLocations > 0 && cLocations < _16M, VERR_INTERNAL_ERROR_5);
|
---|
4739 |
|
---|
4740 | /* We can allocate the partition descriptors here to save an intentation level. */
|
---|
4741 | PVDISKRAWPARTDESC paPartDescs = NULL;
|
---|
4742 | rc = vmdkRawDescAppendPartDesc(pImage, pRawDesc, (uint32_t)cLocations, &paPartDescs);
|
---|
4743 | AssertRCReturn(rc, rc);
|
---|
4744 |
|
---|
4745 | /* Allocate the result table and repeat the location table query: */
|
---|
4746 | PRTDVMTABLELOCATION paLocations = (PRTDVMTABLELOCATION)RTMemAllocZ(sizeof(paLocations[0]) * cLocations);
|
---|
4747 | if (!paLocations)
|
---|
4748 | return vdIfError(pImage->pIfError, VERR_NO_MEMORY, RT_SRC_POS, N_("VMDK: Image path: '%s'. Failed to allocate %zu bytes"),
|
---|
4749 | pImage->pszFilename, sizeof(paLocations[0]) * cLocations);
|
---|
4750 | rc = RTDvmMapQueryTableLocations(hVolMgr, RTDVMMAPQTABLOC_F_INCLUDE_LEGACY, paLocations, cLocations, NULL);
|
---|
4751 | if (RT_SUCCESS(rc))
|
---|
4752 | {
|
---|
4753 | /*
|
---|
4754 | * Translate them into descriptors.
|
---|
4755 | *
|
---|
4756 | * We restrict the amount of partition alignment padding to 4MiB as more
|
---|
4757 | * will just be a waste of space. The use case for including the padding
|
---|
4758 | * are older boot loaders and boot manager (including one by a team member)
|
---|
4759 | * that put data and code in the 62 sectors between the MBR and the first
|
---|
4760 | * partition (total of 63). Later CHS was abandond and partition started
|
---|
4761 | * being aligned on power of two sector boundraries (typically 64KiB or
|
---|
4762 | * 1MiB depending on the media size).
|
---|
4763 | */
|
---|
4764 | for (size_t i = 0; i < cLocations && RT_SUCCESS(rc); i++)
|
---|
4765 | {
|
---|
4766 | Assert(paLocations[i].cb > 0);
|
---|
4767 | if (paLocations[i].cb <= _64M)
|
---|
4768 | {
|
---|
4769 | /* Create the partition descriptor entry: */
|
---|
4770 | //paPartDescs[i].pszRawDevice = NULL;
|
---|
4771 | //paPartDescs[i].offStartInDevice = 0;
|
---|
4772 | //paPartDescs[i].uFlags = 0;
|
---|
4773 | paPartDescs[i].offStartInVDisk = paLocations[i].off;
|
---|
4774 | paPartDescs[i].cbData = paLocations[i].cb;
|
---|
4775 | if (paPartDescs[i].cbData < _4M)
|
---|
4776 | paPartDescs[i].cbData = RT_MIN(paPartDescs[i].cbData + paLocations[i].cbPadding, _4M);
|
---|
4777 | paPartDescs[i].pvPartitionData = RTMemAllocZ((size_t)paPartDescs[i].cbData);
|
---|
4778 | if (paPartDescs[i].pvPartitionData)
|
---|
4779 | {
|
---|
4780 | /* Read the content from the drive: */
|
---|
4781 | rc = RTFileReadAt(hRawDrive, paPartDescs[i].offStartInVDisk, paPartDescs[i].pvPartitionData,
|
---|
4782 | (size_t)paPartDescs[i].cbData, NULL);
|
---|
4783 | if (RT_SUCCESS(rc))
|
---|
4784 | {
|
---|
4785 | /* Do we have custom boot sector code? */
|
---|
4786 | if (pvBootSector && cbBootSector && paPartDescs[i].offStartInVDisk == 0)
|
---|
4787 | {
|
---|
4788 | /* Note! Old code used to quietly drop the bootsector if it was considered too big.
|
---|
4789 | Instead we fail as we weren't able to do what the user requested us to do.
|
---|
4790 | Better if the user knows than starts questioning why the guest isn't
|
---|
4791 | booting as expected. */
|
---|
4792 | if (cbBootSector <= paPartDescs[i].cbData)
|
---|
4793 | memcpy(paPartDescs[i].pvPartitionData, pvBootSector, cbBootSector);
|
---|
4794 | else
|
---|
4795 | rc = vdIfError(pImage->pIfError, VERR_TOO_MUCH_DATA, RT_SRC_POS,
|
---|
4796 | N_("VMDK: Image path: '%s'. The custom boot sector is too big: %zu bytes, %RU64 bytes available"),
|
---|
4797 | pImage->pszFilename, cbBootSector, paPartDescs[i].cbData);
|
---|
4798 | }
|
---|
4799 | }
|
---|
4800 | else
|
---|
4801 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4802 | N_("VMDK: Image path: '%s'. Failed to read partition at off %RU64 length %zu from '%s' (%Rrc)"),
|
---|
4803 | pImage->pszFilename, paPartDescs[i].offStartInVDisk,
|
---|
4804 | (size_t)paPartDescs[i].cbData, pszRawDrive, rc);
|
---|
4805 | }
|
---|
4806 | else
|
---|
4807 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4808 | N_("VMDK: Image path: '%s'. Failed to allocate %zu bytes for copying the partition table at off %RU64"),
|
---|
4809 | pImage->pszFilename, (size_t)paPartDescs[i].cbData, paPartDescs[i].offStartInVDisk);
|
---|
4810 | }
|
---|
4811 | else
|
---|
4812 | rc = vdIfError(pImage->pIfError, VERR_TOO_MUCH_DATA, RT_SRC_POS,
|
---|
4813 | N_("VMDK: Image path: '%s'. Partition table #%u at offset %RU64 in '%s' is to big: %RU64 bytes"),
|
---|
4814 | pImage->pszFilename, i, paLocations[i].off, pszRawDrive, paLocations[i].cb);
|
---|
4815 | }
|
---|
4816 | }
|
---|
4817 | else
|
---|
4818 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4819 | N_("VMDK: Image path: '%s'. RTDvmMapQueryTableLocations failed on '%s' (%Rrc)"),
|
---|
4820 | pImage->pszFilename, pszRawDrive, rc);
|
---|
4821 | RTMemFree(paLocations);
|
---|
4822 | return rc;
|
---|
4823 | }
|
---|
4824 |
|
---|
4825 | /**
|
---|
4826 | * Opens the volume manager for the raw drive when in selected-partition mode.
|
---|
4827 | *
|
---|
4828 | * @param pImage The VMDK image (for errors).
|
---|
4829 | * @param hRawDrive The raw drive handle.
|
---|
4830 | * @param pszRawDrive The raw drive device path (for errors).
|
---|
4831 | * @param cbSector The sector size.
|
---|
4832 | * @param phVolMgr Where to return the handle to the volume manager on
|
---|
4833 | * success.
|
---|
4834 | * @returns VBox status code, errors have been reported.
|
---|
4835 | * @internal
|
---|
4836 | */
|
---|
4837 | static int vmdkRawDescOpenVolMgr(PVMDKIMAGE pImage, RTFILE hRawDrive, const char *pszRawDrive, uint32_t cbSector, PRTDVM phVolMgr)
|
---|
4838 | {
|
---|
4839 | *phVolMgr = NIL_RTDVM;
|
---|
4840 |
|
---|
4841 | RTVFSFILE hVfsFile = NIL_RTVFSFILE;
|
---|
4842 | int rc = RTVfsFileFromRTFile(hRawDrive, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE, true /*fLeaveOpen*/, &hVfsFile);
|
---|
4843 | if (RT_FAILURE(rc))
|
---|
4844 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4845 | N_("VMDK: Image path: '%s'. RTVfsFileFromRTFile failed for '%s' handle (%Rrc)"),
|
---|
4846 | pImage->pszFilename, pszRawDrive, rc);
|
---|
4847 |
|
---|
4848 | RTDVM hVolMgr = NIL_RTDVM;
|
---|
4849 | rc = RTDvmCreate(&hVolMgr, hVfsFile, cbSector, 0 /*fFlags*/);
|
---|
4850 |
|
---|
4851 | RTVfsFileRelease(hVfsFile);
|
---|
4852 |
|
---|
4853 | if (RT_FAILURE(rc))
|
---|
4854 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4855 | N_("VMDK: Image path: '%s'. Failed to create volume manager instance for '%s' (%Rrc)"),
|
---|
4856 | pImage->pszFilename, pszRawDrive, rc);
|
---|
4857 |
|
---|
4858 | rc = RTDvmMapOpen(hVolMgr);
|
---|
4859 | if (RT_SUCCESS(rc))
|
---|
4860 | {
|
---|
4861 | *phVolMgr = hVolMgr;
|
---|
4862 | return VINF_SUCCESS;
|
---|
4863 | }
|
---|
4864 | RTDvmRelease(hVolMgr);
|
---|
4865 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VMDK: Image path: '%s'. RTDvmMapOpen failed for '%s' (%Rrc)"),
|
---|
4866 | pImage->pszFilename, pszRawDrive, rc);
|
---|
4867 | }
|
---|
4868 |
|
---|
4869 | /**
|
---|
4870 | * Opens the raw drive device and get the sizes for it.
|
---|
4871 | *
|
---|
4872 | * @param pImage The image (for error reporting).
|
---|
4873 | * @param pszRawDrive The device/whatever to open.
|
---|
4874 | * @param phRawDrive Where to return the file handle.
|
---|
4875 | * @param pcbRawDrive Where to return the size.
|
---|
4876 | * @param pcbSector Where to return the sector size.
|
---|
4877 | * @returns IPRT status code, errors have been reported.
|
---|
4878 | * @internal
|
---|
4879 | */
|
---|
4880 | static int vmkdRawDescOpenDevice(PVMDKIMAGE pImage, const char *pszRawDrive,
|
---|
4881 | PRTFILE phRawDrive, uint64_t *pcbRawDrive, uint32_t *pcbSector)
|
---|
4882 | {
|
---|
4883 | /*
|
---|
4884 | * Open the device for the raw drive.
|
---|
4885 | */
|
---|
4886 | RTFILE hRawDrive = NIL_RTFILE;
|
---|
4887 | int rc = RTFileOpen(&hRawDrive, pszRawDrive, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE);
|
---|
4888 | if (RT_FAILURE(rc))
|
---|
4889 | return vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
4890 | N_("VMDK: Image path: '%s'. Failed to open the raw drive '%s' for reading (%Rrc)"),
|
---|
|
---|