1 | /* $Id: iso9660vfs.cpp 66735 2017-05-01 23:26:04Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - ISO 9660 Virtual Filesystem.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2017 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #define LOG_GROUP RTLOGGROUP_FS
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32 | #include "internal/iprt.h"
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33 | #include <iprt/fsvfs.h>
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34 |
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35 | #include <iprt/asm.h>
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36 | #include <iprt/assert.h>
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37 | #include <iprt/err.h>
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38 | #include <iprt/file.h>
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39 | #include <iprt/log.h>
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40 | #include <iprt/mem.h>
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41 | #include <iprt/poll.h>
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42 | #include <iprt/string.h>
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43 | #include <iprt/thread.h>
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44 | #include <iprt/vfs.h>
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45 | #include <iprt/vfslowlevel.h>
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46 | #include <iprt/formats/iso9660.h>
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47 |
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48 |
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49 |
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50 | /*********************************************************************************************************************************
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51 | * Structures and Typedefs *
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52 | *********************************************************************************************************************************/
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53 | /** Pointer to an ISO 9660 volume (VFS instance data). */
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54 | typedef struct RTFSISO9660VOL *PRTFSISO9660VOL;
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55 | /** Pointer to a const ISO 9660 volume (VFS instance data). */
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56 | typedef struct RTFSISO9660VOL const *PCRTFSISO9660VOL;
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57 |
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58 | /** Pointer to a ISO 9660 directory instance. */
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59 | typedef struct RTFSISO9660DIR *PRTFSISO9660DIR;
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60 |
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61 |
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62 |
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63 | /**
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64 | * ISO 9660 extent (internal to the VFS not a disk structure).
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65 | */
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66 | typedef struct RTFSISO9660EXTENT
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67 | {
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68 | /** The disk offset. */
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69 | uint64_t offDisk;
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70 | /** The size of the extent in bytes. */
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71 | uint64_t cbExtent;
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72 | } RTFSISO9660EXTENT;
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73 | /** Pointer to an ISO 9660 extent. */
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74 | typedef RTFSISO9660EXTENT *PRTFSISO9660EXTENT;
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75 | /** Pointer to a const ISO 9660 extent. */
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76 | typedef RTFSISO9660EXTENT const *PCRTFSISO9660EXTENT;
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77 |
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78 |
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79 | /**
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80 | * ISO 9660 file system object (common part to files and dirs).
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81 | */
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82 | typedef struct RTFSISO9660OBJ
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83 | {
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84 | /** The parent directory keeps a list of open objects (RTFSISO9660OBJ). */
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85 | RTLISTNODE Entry;
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86 | /** The parent directory (not released till all children are close). */
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87 | PRTFSISO9660DIR pParentDir;
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88 | /** The byte offset of the first directory record. */
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89 | uint64_t offDirRec;
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90 | /** Attributes. */
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91 | RTFMODE fAttrib;
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92 | /** The object size. */
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93 | uint64_t cbObject;
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94 | /** The access time. */
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95 | RTTIMESPEC AccessTime;
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96 | /** The modificaton time. */
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97 | RTTIMESPEC ModificationTime;
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98 | /** The change time. */
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99 | RTTIMESPEC ChangeTime;
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100 | /** The birth time. */
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101 | RTTIMESPEC BirthTime;
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102 | /** Pointer to the volume. */
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103 | PRTFSISO9660VOL pVol;
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104 | /** Number of extents. */
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105 | uint32_t cExtents;
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106 | /** The first extent. */
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107 | RTFSISO9660EXTENT FirstExtent;
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108 | /** Array of additional extents. */
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109 | PRTFSISO9660EXTENT paExtents;
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110 | } RTFSISO9660OBJ;
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111 | typedef RTFSISO9660OBJ *PRTFSISO9660OBJ;
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112 |
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113 | /**
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114 | * ISO 9660 file.
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115 | */
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116 | typedef struct RTFSISO9660FILE
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117 | {
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118 | /** Core ISO9660 object info. */
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119 | RTFSISO9660OBJ Core;
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120 | /** The current file offset. */
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121 | uint64_t offFile;
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122 | } RTFSISO9660FILE;
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123 | /** Pointer to a ISO 9660 file object. */
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124 | typedef RTFSISO9660FILE *PRTFSISO9660FILE;
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125 |
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126 |
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127 | /**
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128 | * ISO 9660 directory.
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129 | *
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130 | * We will always read in the whole directory just to keep things really simple.
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131 | */
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132 | typedef struct RTFSISO9660DIR
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133 | {
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134 | /** Core ISO 9660 object info. */
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135 | RTFSISO9660OBJ Core;
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136 | /** The VFS handle for this directory (for reference counting). */
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137 | RTVFSDIR hVfsSelf;
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138 | /** Open child objects (RTFSISO9660OBJ). */
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139 | RTLISTNODE OpenChildren;
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140 |
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141 | /** Pointer to the directory content. */
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142 | uint8_t *pbDir;
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143 | /** The size of the directory content (duplicate of Core.cbObject). */
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144 | uint32_t cbDir;
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145 | } RTFSISO9660DIR;
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146 | /** Pointer to a ISO 9660 directory instance. */
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147 | typedef RTFSISO9660DIR *PRTFSISO9660DIR;
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148 |
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149 |
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150 |
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151 | /**
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152 | * A ISO 9660 volume.
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153 | */
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154 | typedef struct RTFSISO9660VOL
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155 | {
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156 | /** Handle to itself. */
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157 | RTVFS hVfsSelf;
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158 | /** The file, partition, or whatever backing the ISO 9660 volume. */
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159 | RTVFSFILE hVfsBacking;
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160 | /** The size of the backing thingy. */
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161 | uint64_t cbBacking;
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162 | /** Flags. */
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163 | uint32_t fFlags;
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164 | /** The sector size (in bytes). */
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165 | uint32_t cbSector;
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166 | /** The size of a logical block in bytes. */
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167 | uint32_t cbBlock;
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168 | /** The primary volume space size in blocks. */
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169 | uint32_t cBlocksInPrimaryVolumeSpace;
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170 | /** The primary volume space size in bytes. */
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171 | uint64_t cbPrimaryVolumeSpace;
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172 | /** The number of volumes in the set. */
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173 | uint32_t cVolumesInSet;
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174 | /** The primary volume sequence ID. */
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175 | uint32_t idPrimaryVol;
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176 | /** Set if using UTF16-2 (joliet). */
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177 | bool fIsUtf16;
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178 |
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179 | /** The root directory handle. */
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180 | RTVFSDIR hVfsRootDir;
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181 | /** The root directory instance data. */
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182 | PRTFSISO9660DIR pRootDir;
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183 | } RTFSISO9660VOL;
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184 |
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185 |
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186 |
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187 | /*********************************************************************************************************************************
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188 | * Global Variables *
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189 | *********************************************************************************************************************************/
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190 |
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191 |
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192 | /*********************************************************************************************************************************
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193 | * Internal Functions *
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194 | *********************************************************************************************************************************/
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195 | static void rtFsIso9660Dir_AddOpenChild(PRTFSISO9660DIR pDir, PRTFSISO9660OBJ pChild);
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196 | static void rtFsIso9660Dir_RemoveOpenChild(PRTFSISO9660DIR pDir, PRTFSISO9660OBJ pChild);
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197 | static int rtFsIso9660Dir_New(PRTFSISO9660VOL pThis, PRTFSISO9660DIR pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
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198 | uint64_t offDirRec, PRTVFSDIR phVfsDir, PRTFSISO9660DIR *ppDir);
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199 |
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200 |
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201 |
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202 | /**
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203 | * Converts a ISO 9660 binary timestamp into an IPRT timesspec.
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204 | *
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205 | * @param pTimeSpec Where to return the IRPT time.
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206 | * @param pIso9660 The ISO 9660 binary timestamp.
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207 | */
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208 | static void rtFsIso9660DateTime2TimeSpec(PRTTIMESPEC pTimeSpec, PCISO9660RECTIMESTAMP pIso9660)
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209 | {
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210 | RTTIME Time;
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211 | Time.fFlags = RTTIME_FLAGS_TYPE_UTC;
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212 | Time.offUTC = 0;
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213 | Time.i32Year = pIso9660->bYear + 1900;
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214 | Time.u8Month = RT_MIN(RT_MAX(pIso9660->bMonth, 1), 12);
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215 | Time.u8MonthDay = RT_MIN(RT_MAX(pIso9660->bDay, 1), 31);
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216 | Time.u8WeekDay = UINT8_MAX;
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217 | Time.u16YearDay = 0;
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218 | Time.u8Hour = RT_MIN(pIso9660->bHour, 23);
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219 | Time.u8Minute = RT_MIN(pIso9660->bMinute, 59);
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220 | Time.u8Second = RT_MIN(pIso9660->bSecond, 59);
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221 | Time.u32Nanosecond = 0;
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222 | RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time));
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223 |
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224 | /* Only apply the UTC offset if it's within reasons. */
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225 | if (RT_ABS(pIso9660->offUtc) <= 13*4)
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226 | RTTimeSpecSubSeconds(pTimeSpec, pIso9660->offUtc * 15 * 60 * 60);
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227 | }
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228 |
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229 |
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230 | /**
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231 | * Initialization of a RTFSISO9660OBJ structure from a directory record.
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232 | *
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233 | * @note The RTFSISO9660OBJ::pParentDir and RTFSISO9660OBJ::Clusters members are
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234 | * properly initialized elsewhere.
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235 | *
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236 | * @param pObj The structure to initialize.
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237 | * @param pDirRec The primary directory record.
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238 | * @param cDirRecs Number of directory records.
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239 | * @param offDirRec The offset of the primary directory record.
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240 | * @param pVol The volume.
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241 | */
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242 | static void rtFsIso9660Obj_InitFromDirRec(PRTFSISO9660OBJ pObj, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
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243 | uint64_t offDirRec, PRTFSISO9660VOL pVol)
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244 | {
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245 | Assert(cDirRecs == 1); RT_NOREF(cDirRecs);
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246 |
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247 | RTListInit(&pObj->Entry);
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248 | pObj->pParentDir = NULL;
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249 | pObj->pVol = pVol;
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250 | pObj->offDirRec = offDirRec;
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251 | pObj->fAttrib = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY
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252 | ? RTFS_DOS_DIRECTORY | RTFS_TYPE_DIRECTORY : RTFS_TYPE_FILE;
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253 | if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_HIDDEN)
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254 | pObj->fAttrib |= RTFS_DOS_HIDDEN;
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255 | pObj->cbObject = ISO9660_GET_ENDIAN(&pDirRec->cbData);
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256 | pObj->cExtents = 1;
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257 | pObj->FirstExtent.cbExtent = pObj->cbObject;
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258 | pObj->FirstExtent.offDisk = ISO9660_GET_ENDIAN(&pDirRec->offExtent) * (uint64_t)pVol->cbBlock;
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259 |
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260 | rtFsIso9660DateTime2TimeSpec(&pObj->ModificationTime, &pDirRec->RecTime);
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261 | pObj->BirthTime = pObj->ModificationTime;
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262 | pObj->AccessTime = pObj->ModificationTime;
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263 | pObj->ChangeTime = pObj->ModificationTime;
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264 | }
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265 |
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266 |
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267 |
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268 | /**
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269 | * Worker for rtFsIso9660File_Close and rtFsIso9660Dir_Close that does common work.
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270 | *
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271 | * @returns IPRT status code.
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272 | * @param pObj The common object structure.
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273 | */
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274 | static int rtFsIso9660Obj_Close(PRTFSISO9660OBJ pObj)
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275 | {
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276 | if (pObj->pParentDir)
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277 | rtFsIso9660Dir_RemoveOpenChild(pObj->pParentDir, pObj);
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278 | if (pObj->paExtents)
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279 | {
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280 | RTMemFree(pObj->paExtents);
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281 | pObj->paExtents = NULL;
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282 | }
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283 | return VINF_SUCCESS;
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284 | }
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285 |
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286 |
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287 | /**
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288 | * @interface_method_impl{RTVFSOBJOPS,pfnClose}
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289 | */
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290 | static DECLCALLBACK(int) rtFsIso9660File_Close(void *pvThis)
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291 | {
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292 | PRTFSISO9660FILE pThis = (PRTFSISO9660FILE)pvThis;
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293 | return rtFsIso9660Obj_Close(&pThis->Core);
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294 | }
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295 |
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296 |
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297 | /**
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298 | * @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
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299 | */
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300 | static DECLCALLBACK(int) rtFsIso9660Obj_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
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301 | {
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302 | PRTFSISO9660OBJ pThis = (PRTFSISO9660OBJ)pvThis;
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303 |
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304 | pObjInfo->cbObject = pThis->cbObject;
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305 | pObjInfo->cbAllocated = RT_ALIGN_64(pThis->cbObject, pThis->pVol->cbBlock);
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306 | pObjInfo->AccessTime = pThis->AccessTime;
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307 | pObjInfo->ModificationTime = pThis->ModificationTime;
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308 | pObjInfo->ChangeTime = pThis->ChangeTime;
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309 | pObjInfo->BirthTime = pThis->BirthTime;
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310 | pObjInfo->Attr.fMode = pThis->fAttrib;
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311 | pObjInfo->Attr.enmAdditional = enmAddAttr;
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312 |
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313 | switch (enmAddAttr)
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314 | {
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315 | case RTFSOBJATTRADD_NOTHING: /* fall thru */
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316 | case RTFSOBJATTRADD_UNIX:
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317 | pObjInfo->Attr.u.Unix.uid = NIL_RTUID;
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318 | pObjInfo->Attr.u.Unix.gid = NIL_RTGID;
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319 | pObjInfo->Attr.u.Unix.cHardlinks = 1;
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320 | pObjInfo->Attr.u.Unix.INodeIdDevice = 0;
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321 | pObjInfo->Attr.u.Unix.INodeId = 0; /* Could probably use the directory entry offset. */
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322 | pObjInfo->Attr.u.Unix.fFlags = 0;
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323 | pObjInfo->Attr.u.Unix.GenerationId = 0;
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324 | pObjInfo->Attr.u.Unix.Device = 0;
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325 | break;
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326 | case RTFSOBJATTRADD_UNIX_OWNER:
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327 | pObjInfo->Attr.u.UnixOwner.uid = 0;
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328 | pObjInfo->Attr.u.UnixOwner.szName[0] = '\0';
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329 | break;
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330 | case RTFSOBJATTRADD_UNIX_GROUP:
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331 | pObjInfo->Attr.u.UnixGroup.gid = 0;
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332 | pObjInfo->Attr.u.UnixGroup.szName[0] = '\0';
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333 | break;
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334 | case RTFSOBJATTRADD_EASIZE:
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335 | pObjInfo->Attr.u.EASize.cb = 0;
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336 | break;
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337 | default:
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338 | return VERR_INVALID_PARAMETER;
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339 | }
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340 | return VINF_SUCCESS;
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341 | }
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342 |
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343 |
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344 | /**
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345 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnRead}
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346 | */
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347 | static DECLCALLBACK(int) rtFsIso9660File_Read(void *pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t *pcbRead)
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348 | {
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349 | PRTFSISO9660FILE pThis = (PRTFSISO9660FILE)pvThis;
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350 | AssertReturn(pSgBuf->cSegs != 0, VERR_INTERNAL_ERROR_3);
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351 | RT_NOREF(fBlocking);
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352 |
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353 | /*
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354 | * Check for EOF.
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355 | */
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356 | if (off == -1)
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357 | off = pThis->offFile;
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358 | if ((uint64_t)off >= pThis->Core.cbObject)
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359 | {
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360 | if (pcbRead)
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361 | {
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362 | *pcbRead = 0;
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363 | return VINF_EOF;
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364 | }
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365 | return VERR_EOF;
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366 | }
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367 |
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368 |
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369 | /*
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370 | * Simple case: File has a single extent.
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371 | */
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372 | int rc = VINF_SUCCESS;
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373 | size_t cbRead = 0;
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374 | uint64_t cbFileLeft = pThis->Core.cbObject - (uint64_t)off;
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375 | size_t cbLeft = pSgBuf->paSegs[0].cbSeg;
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376 | uint8_t *pbDst = (uint8_t *)pSgBuf->paSegs[0].pvSeg;
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377 | if (pThis->Core.cExtents == 1)
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378 | {
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379 | if (cbLeft > 0)
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380 | {
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381 | size_t cbToRead = cbLeft;
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382 | if (cbToRead > cbFileLeft)
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383 | cbToRead = (size_t)cbFileLeft;
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384 | rc = RTVfsFileReadAt(pThis->Core.pVol->hVfsBacking, pThis->Core.FirstExtent.offDisk + off, pbDst, cbToRead, NULL);
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385 | if (RT_SUCCESS(rc))
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386 | {
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387 | off += cbToRead;
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388 | pbDst += cbToRead;
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389 | cbRead += cbToRead;
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390 | cbFileLeft -= cbToRead;
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391 | cbLeft -= cbToRead;
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392 | }
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393 | }
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394 | }
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395 | /*
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396 | * Complicated case: Work the file content extent by extent.
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397 | */
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398 | else
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399 | {
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400 |
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401 | return VERR_NOT_IMPLEMENTED; /** @todo multi-extent stuff . */
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402 | }
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403 |
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404 | /* Update the offset and return. */
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405 | pThis->offFile = off;
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406 | if (pcbRead)
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407 | *pcbRead = cbRead;
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408 | return VINF_SUCCESS;
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409 | }
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410 |
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411 |
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412 | /**
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413 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnWrite}
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414 | */
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415 | static DECLCALLBACK(int) rtFsIso9660File_Write(void *pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t *pcbWritten)
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416 | {
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417 | RT_NOREF(pvThis, off, pSgBuf, fBlocking, pcbWritten);
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418 | return VERR_WRITE_PROTECT;
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419 | }
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420 |
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421 |
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422 | /**
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423 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnFlush}
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424 | */
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425 | static DECLCALLBACK(int) rtFsIso9660File_Flush(void *pvThis)
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---|
426 | {
|
---|
427 | RT_NOREF(pvThis);
|
---|
428 | return VINF_SUCCESS;
|
---|
429 | }
|
---|
430 |
|
---|
431 |
|
---|
432 | /**
|
---|
433 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnPollOne}
|
---|
434 | */
|
---|
435 | static DECLCALLBACK(int) rtFsIso9660File_PollOne(void *pvThis, uint32_t fEvents, RTMSINTERVAL cMillies, bool fIntr,
|
---|
436 | uint32_t *pfRetEvents)
|
---|
437 | {
|
---|
438 | NOREF(pvThis);
|
---|
439 | int rc;
|
---|
440 | if (fEvents != RTPOLL_EVT_ERROR)
|
---|
441 | {
|
---|
442 | *pfRetEvents = fEvents & ~RTPOLL_EVT_ERROR;
|
---|
443 | rc = VINF_SUCCESS;
|
---|
444 | }
|
---|
445 | else if (fIntr)
|
---|
446 | rc = RTThreadSleep(cMillies);
|
---|
447 | else
|
---|
448 | {
|
---|
449 | uint64_t uMsStart = RTTimeMilliTS();
|
---|
450 | do
|
---|
451 | rc = RTThreadSleep(cMillies);
|
---|
452 | while ( rc == VERR_INTERRUPTED
|
---|
453 | && !fIntr
|
---|
454 | && RTTimeMilliTS() - uMsStart < cMillies);
|
---|
455 | if (rc == VERR_INTERRUPTED)
|
---|
456 | rc = VERR_TIMEOUT;
|
---|
457 | }
|
---|
458 | return rc;
|
---|
459 | }
|
---|
460 |
|
---|
461 |
|
---|
462 | /**
|
---|
463 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnTell}
|
---|
464 | */
|
---|
465 | static DECLCALLBACK(int) rtFsIso9660File_Tell(void *pvThis, PRTFOFF poffActual)
|
---|
466 | {
|
---|
467 | PRTFSISO9660FILE pThis = (PRTFSISO9660FILE)pvThis;
|
---|
468 | *poffActual = pThis->offFile;
|
---|
469 | return VINF_SUCCESS;
|
---|
470 | }
|
---|
471 |
|
---|
472 |
|
---|
473 | /**
|
---|
474 | * @interface_method_impl{RTVFSOBJSETOPS,pfnMode}
|
---|
475 | */
|
---|
476 | static DECLCALLBACK(int) rtFsIso9660Obj_SetMode(void *pvThis, RTFMODE fMode, RTFMODE fMask)
|
---|
477 | {
|
---|
478 | RT_NOREF(pvThis, fMode, fMask);
|
---|
479 | return VERR_WRITE_PROTECT;
|
---|
480 | }
|
---|
481 |
|
---|
482 |
|
---|
483 | /**
|
---|
484 | * @interface_method_impl{RTVFSOBJSETOPS,pfnSetTimes}
|
---|
485 | */
|
---|
486 | static DECLCALLBACK(int) rtFsIso9660Obj_SetTimes(void *pvThis, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
|
---|
487 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
|
---|
488 | {
|
---|
489 | RT_NOREF(pvThis, pAccessTime, pModificationTime, pChangeTime, pBirthTime);
|
---|
490 | return VERR_WRITE_PROTECT;
|
---|
491 | }
|
---|
492 |
|
---|
493 |
|
---|
494 | /**
|
---|
495 | * @interface_method_impl{RTVFSOBJSETOPS,pfnSetOwner}
|
---|
496 | */
|
---|
497 | static DECLCALLBACK(int) rtFsIso9660Obj_SetOwner(void *pvThis, RTUID uid, RTGID gid)
|
---|
498 | {
|
---|
499 | RT_NOREF(pvThis, uid, gid);
|
---|
500 | return VERR_WRITE_PROTECT;
|
---|
501 | }
|
---|
502 |
|
---|
503 |
|
---|
504 | /**
|
---|
505 | * @interface_method_impl{RTVFSFILEOPS,pfnSeek}
|
---|
506 | */
|
---|
507 | static DECLCALLBACK(int) rtFsIso9660File_Seek(void *pvThis, RTFOFF offSeek, unsigned uMethod, PRTFOFF poffActual)
|
---|
508 | {
|
---|
509 | PRTFSISO9660FILE pThis = (PRTFSISO9660FILE)pvThis;
|
---|
510 | RTFOFF offNew;
|
---|
511 | switch (uMethod)
|
---|
512 | {
|
---|
513 | case RTFILE_SEEK_BEGIN:
|
---|
514 | offNew = offSeek;
|
---|
515 | break;
|
---|
516 | case RTFILE_SEEK_END:
|
---|
517 | offNew = (RTFOFF)pThis->Core.cbObject + offSeek;
|
---|
518 | break;
|
---|
519 | case RTFILE_SEEK_CURRENT:
|
---|
520 | offNew = (RTFOFF)pThis->offFile + offSeek;
|
---|
521 | break;
|
---|
522 | default:
|
---|
523 | return VERR_INVALID_PARAMETER;
|
---|
524 | }
|
---|
525 | if (offNew >= 0)
|
---|
526 | {
|
---|
527 | if (offNew <= _4G)
|
---|
528 | {
|
---|
529 | pThis->offFile = offNew;
|
---|
530 | *poffActual = offNew;
|
---|
531 | return VINF_SUCCESS;
|
---|
532 | }
|
---|
533 | return VERR_OUT_OF_RANGE;
|
---|
534 | }
|
---|
535 | return VERR_NEGATIVE_SEEK;
|
---|
536 | }
|
---|
537 |
|
---|
538 |
|
---|
539 | /**
|
---|
540 | * @interface_method_impl{RTVFSFILEOPS,pfnQuerySize}
|
---|
541 | */
|
---|
542 | static DECLCALLBACK(int) rtFsIso9660File_QuerySize(void *pvThis, uint64_t *pcbFile)
|
---|
543 | {
|
---|
544 | PRTFSISO9660FILE pThis = (PRTFSISO9660FILE)pvThis;
|
---|
545 | *pcbFile = pThis->Core.cbObject;
|
---|
546 | return VINF_SUCCESS;
|
---|
547 | }
|
---|
548 |
|
---|
549 |
|
---|
550 | /**
|
---|
551 | * FAT file operations.
|
---|
552 | */
|
---|
553 | DECL_HIDDEN_CONST(const RTVFSFILEOPS) g_rtFsIso9660FileOps =
|
---|
554 | {
|
---|
555 | { /* Stream */
|
---|
556 | { /* Obj */
|
---|
557 | RTVFSOBJOPS_VERSION,
|
---|
558 | RTVFSOBJTYPE_FILE,
|
---|
559 | "FatFile",
|
---|
560 | rtFsIso9660File_Close,
|
---|
561 | rtFsIso9660Obj_QueryInfo,
|
---|
562 | RTVFSOBJOPS_VERSION
|
---|
563 | },
|
---|
564 | RTVFSIOSTREAMOPS_VERSION,
|
---|
565 | RTVFSIOSTREAMOPS_FEAT_NO_SG,
|
---|
566 | rtFsIso9660File_Read,
|
---|
567 | rtFsIso9660File_Write,
|
---|
568 | rtFsIso9660File_Flush,
|
---|
569 | rtFsIso9660File_PollOne,
|
---|
570 | rtFsIso9660File_Tell,
|
---|
571 | NULL /*pfnSkip*/,
|
---|
572 | NULL /*pfnZeroFill*/,
|
---|
573 | RTVFSIOSTREAMOPS_VERSION,
|
---|
574 | },
|
---|
575 | RTVFSFILEOPS_VERSION,
|
---|
576 | 0,
|
---|
577 | { /* ObjSet */
|
---|
578 | RTVFSOBJSETOPS_VERSION,
|
---|
579 | RT_OFFSETOF(RTVFSFILEOPS, Stream.Obj) - RT_OFFSETOF(RTVFSFILEOPS, ObjSet),
|
---|
580 | rtFsIso9660Obj_SetMode,
|
---|
581 | rtFsIso9660Obj_SetTimes,
|
---|
582 | rtFsIso9660Obj_SetOwner,
|
---|
583 | RTVFSOBJSETOPS_VERSION
|
---|
584 | },
|
---|
585 | rtFsIso9660File_Seek,
|
---|
586 | rtFsIso9660File_QuerySize,
|
---|
587 | RTVFSFILEOPS_VERSION
|
---|
588 | };
|
---|
589 |
|
---|
590 |
|
---|
591 | /**
|
---|
592 | * Instantiates a new directory.
|
---|
593 | *
|
---|
594 | * @returns IPRT status code.
|
---|
595 | * @param pThis The FAT volume instance.
|
---|
596 | * @param pParentDir The parent directory.
|
---|
597 | * @param pDirRec The directory record.
|
---|
598 | * @param cDirRecs Number of directory records if more than one.
|
---|
599 | * @param offDirRec The byte offset of the directory record.
|
---|
600 | * @param offEntryInDir The byte offset of the directory entry in the parent
|
---|
601 | * directory.
|
---|
602 | * @param fOpen RTFILE_O_XXX flags.
|
---|
603 | * @param phVfsFile Where to return the file handle.
|
---|
604 | */
|
---|
605 | static int rtFsIso9660File_New(PRTFSISO9660VOL pThis, PRTFSISO9660DIR pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
|
---|
606 | uint64_t offDirRec, uint64_t fOpen, PRTVFSFILE phVfsFile)
|
---|
607 | {
|
---|
608 | AssertPtr(pParentDir);
|
---|
609 |
|
---|
610 | PRTFSISO9660FILE pNewFile;
|
---|
611 | int rc = RTVfsNewFile(&g_rtFsIso9660FileOps, sizeof(*pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /*use volume lock*/,
|
---|
612 | phVfsFile, (void **)&pNewFile);
|
---|
613 | if (RT_SUCCESS(rc))
|
---|
614 | {
|
---|
615 | /*
|
---|
616 | * Initialize it all so rtFsIso9660File_Close doesn't trip up in anyway.
|
---|
617 | */
|
---|
618 | rtFsIso9660Obj_InitFromDirRec(&pNewFile->Core, pDirRec, cDirRecs, offDirRec, pThis);
|
---|
619 | pNewFile->offFile = 0;
|
---|
620 |
|
---|
621 | /*
|
---|
622 | * Link into parent directory so we can use it to update
|
---|
623 | * our directory entry.
|
---|
624 | */
|
---|
625 | rtFsIso9660Dir_AddOpenChild(pParentDir, &pNewFile->Core);
|
---|
626 |
|
---|
627 | return VINF_SUCCESS;
|
---|
628 |
|
---|
629 | }
|
---|
630 | *phVfsFile = NIL_RTVFSFILE;
|
---|
631 | return rc;
|
---|
632 | }
|
---|
633 |
|
---|
634 |
|
---|
635 | /**
|
---|
636 | * RTStrToUtf16Ex returning big-endian UTF-16.
|
---|
637 | */
|
---|
638 | static int rtFsIso9660_StrToUtf16BigEndian(const char *pszString, size_t cchString, PRTUTF16 *ppwsz, size_t cwc, size_t *pcwc)
|
---|
639 | {
|
---|
640 | int rc = RTStrToUtf16Ex(pszString, cchString, ppwsz, cwc, pcwc);
|
---|
641 | #ifndef RT_BIG_ENDIAN
|
---|
642 | if (RT_SUCCESS(rc))
|
---|
643 | {
|
---|
644 | PRTUTF16 pwc = *ppwsz;
|
---|
645 | RTUTF16 wc;
|
---|
646 | while ((wc = *pwc))
|
---|
647 | *pwc++ = RT_H2BE_U16(wc);
|
---|
648 | }
|
---|
649 | #endif
|
---|
650 | return rc;
|
---|
651 | }
|
---|
652 |
|
---|
653 |
|
---|
654 |
|
---|
655 | /**
|
---|
656 | * Locates a directory entry in a directory.
|
---|
657 | *
|
---|
658 | * @returns IPRT status code.
|
---|
659 | * @retval VERR_FILE_NOT_FOUND if not found.
|
---|
660 | * @param pThis The directory to search.
|
---|
661 | * @param pszEntry The entry to look for.
|
---|
662 | * @param poffDirRec Where to return the offset of the directory record
|
---|
663 | * on the disk.
|
---|
664 | * @param ppDirRec Where to return the pointer to the directory record
|
---|
665 | * (the whole directory is buffered).
|
---|
666 | * @param pcDirRecs Where to return the number of directory records
|
---|
667 | * related to this entry.
|
---|
668 | * @param pfMode Where to return the file type, rock ridge adjusted.
|
---|
669 | */
|
---|
670 | static int rtFsIso9660Dir_FindEntry(PRTFSISO9660DIR pThis, const char *pszEntry, uint64_t *poffDirRec, PCISO9660DIRREC *ppDirRec,
|
---|
671 | uint32_t *pcDirRecs, PRTFMODE pfMode)
|
---|
672 | {
|
---|
673 | /* Set return values. */
|
---|
674 | *poffDirRec = UINT64_MAX;
|
---|
675 | *ppDirRec = NULL;
|
---|
676 | *pcDirRecs = 1;
|
---|
677 | *pfMode = UINT32_MAX;
|
---|
678 |
|
---|
679 | /*
|
---|
680 | * If we're in UTF-16BE mode, convert the input name to UTF-16BE. Otherwise try
|
---|
681 | * uppercase it into a ISO 9660 compliant name.
|
---|
682 | */
|
---|
683 | int rc;
|
---|
684 | bool const fIsUtf16 = pThis->Core.pVol->fIsUtf16;
|
---|
685 | size_t cwcEntry = 0;
|
---|
686 | size_t cbEntry = 0;
|
---|
687 | size_t cchUpper = ~(size_t)0;
|
---|
688 | union
|
---|
689 | {
|
---|
690 | RTUTF16 wszEntry[260 + 1];
|
---|
691 | struct
|
---|
692 | {
|
---|
693 | char szUpper[255 + 1];
|
---|
694 | char szRock[260 + 1];
|
---|
695 | } s;
|
---|
696 | } uBuf;
|
---|
697 | if (fIsUtf16)
|
---|
698 | {
|
---|
699 | PRTUTF16 pwszEntry = uBuf.wszEntry;
|
---|
700 | rc = rtFsIso9660_StrToUtf16BigEndian(pszEntry, RTSTR_MAX, &pwszEntry, RT_ELEMENTS(uBuf.wszEntry), &cwcEntry);
|
---|
701 | if (RT_FAILURE(rc))
|
---|
702 | return rc;
|
---|
703 | cbEntry = cwcEntry * 2;
|
---|
704 | }
|
---|
705 | else
|
---|
706 | {
|
---|
707 | rc = RTStrCopy(uBuf.s.szUpper, sizeof(uBuf.s.szUpper), pszEntry);
|
---|
708 | if (RT_SUCCESS(rc))
|
---|
709 | {
|
---|
710 | RTStrToUpper(uBuf.s.szUpper);
|
---|
711 | cchUpper = strlen(uBuf.s.szUpper);
|
---|
712 | }
|
---|
713 | }
|
---|
714 |
|
---|
715 | /*
|
---|
716 | * Scan the directory buffer by buffer.
|
---|
717 | */
|
---|
718 | uint32_t offEntryInDir = 0;
|
---|
719 | uint32_t const cbDir = pThis->Core.cbObject;
|
---|
720 | while (offEntryInDir + RT_OFFSETOF(ISO9660DIRREC, achFileId) <= cbDir)
|
---|
721 | {
|
---|
722 | PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir];
|
---|
723 |
|
---|
724 | /* If null length, skip to the next sector. */
|
---|
725 | if (pDirRec->cbDirRec == 0)
|
---|
726 | offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U);
|
---|
727 | else
|
---|
728 | {
|
---|
729 | /* Try match the filename. */
|
---|
730 | /** @todo deal with multi-extend filenames, or however that works... */
|
---|
731 | if (fIsUtf16)
|
---|
732 | {
|
---|
733 | if ( ((size_t)pDirRec->bFileIdLength - cbEntry) > (size_t)12 /* ;12345 */
|
---|
734 | || RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, uBuf.wszEntry, cwcEntry) != 0
|
---|
735 | || ( (size_t)pDirRec->bFileIdLength != cbEntry
|
---|
736 | && RT_MAKE_U16(pDirRec->achFileId[cbEntry + 1], pDirRec->achFileId[cbEntry]) != ';') )
|
---|
737 | {
|
---|
738 | /* Advance */
|
---|
739 | offEntryInDir += pDirRec->cbDirRec;
|
---|
740 | continue;
|
---|
741 | }
|
---|
742 | }
|
---|
743 | else
|
---|
744 | {
|
---|
745 | if ( ((size_t)pDirRec->bFileIdLength - cchUpper) > (size_t)6 /* ;12345 */
|
---|
746 | || memcmp(pDirRec->achFileId, uBuf.s.szUpper, cchUpper) != 0
|
---|
747 | || ( (size_t)pDirRec->bFileIdLength != cchUpper
|
---|
748 | && pDirRec->achFileId[cchUpper] != ';') )
|
---|
749 | {
|
---|
750 | /** @todo check rock. */
|
---|
751 | if (1)
|
---|
752 | {
|
---|
753 | /* Advance */
|
---|
754 | offEntryInDir += pDirRec->cbDirRec;
|
---|
755 | continue;
|
---|
756 | }
|
---|
757 | }
|
---|
758 | }
|
---|
759 |
|
---|
760 | *poffDirRec = pThis->Core.FirstExtent.offDisk + offEntryInDir;
|
---|
761 | *ppDirRec = pDirRec;
|
---|
762 | *pcDirRecs = 1;
|
---|
763 | *pfMode = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY ? RTFS_TYPE_DIRECTORY : RTFS_TYPE_FILE;
|
---|
764 | return VINF_SUCCESS;
|
---|
765 |
|
---|
766 | }
|
---|
767 | }
|
---|
768 |
|
---|
769 | return VERR_FILE_NOT_FOUND;
|
---|
770 | }
|
---|
771 |
|
---|
772 |
|
---|
773 | /**
|
---|
774 | * @interface_method_impl{RTVFSOBJOPS,pfnClose}
|
---|
775 | */
|
---|
776 | static DECLCALLBACK(int) rtFsIso9660Dir_Close(void *pvThis)
|
---|
777 | {
|
---|
778 | PRTFSISO9660DIR pThis = (PRTFSISO9660DIR)pvThis;
|
---|
779 | if (pThis->pbDir)
|
---|
780 | {
|
---|
781 | RTMemFree(pThis->pbDir);
|
---|
782 | pThis->pbDir = NULL;
|
---|
783 | }
|
---|
784 | return rtFsIso9660Obj_Close(&pThis->Core);
|
---|
785 | }
|
---|
786 |
|
---|
787 |
|
---|
788 | /**
|
---|
789 | * @interface_method_impl{RTVFSOBJOPS,pfnTraversalOpen}
|
---|
790 | */
|
---|
791 | static DECLCALLBACK(int) rtFsIso9660Dir_TraversalOpen(void *pvThis, const char *pszEntry, PRTVFSDIR phVfsDir,
|
---|
792 | PRTVFSSYMLINK phVfsSymlink, PRTVFS phVfsMounted)
|
---|
793 | {
|
---|
794 | /*
|
---|
795 | * We may have symbolic links if rock ridge is being used, though currently
|
---|
796 | * we won't have nested mounts.
|
---|
797 | */
|
---|
798 | int rc;
|
---|
799 | if (phVfsMounted)
|
---|
800 | *phVfsMounted = NIL_RTVFS;
|
---|
801 | if (phVfsDir || phVfsSymlink)
|
---|
802 | {
|
---|
803 | if (phVfsSymlink)
|
---|
804 | *phVfsSymlink = NIL_RTVFSSYMLINK;
|
---|
805 | if (phVfsDir)
|
---|
806 | *phVfsDir = NIL_RTVFSDIR;
|
---|
807 |
|
---|
808 | PRTFSISO9660DIR pThis = (PRTFSISO9660DIR)pvThis;
|
---|
809 | PCISO9660DIRREC pDirRec;
|
---|
810 | uint64_t offDirRec;
|
---|
811 | uint32_t cDirRecs;
|
---|
812 | RTFMODE fMode;
|
---|
813 | rc = rtFsIso9660Dir_FindEntry(pThis, pszEntry, &offDirRec, &pDirRec, &cDirRecs, &fMode);
|
---|
814 | Log2(("rtFsIso9660Dir_TraversalOpen: FindEntry(,%s,) -> %Rrc\n", pszEntry, rc));
|
---|
815 | if (RT_SUCCESS(rc))
|
---|
816 | {
|
---|
817 | switch (fMode & RTFS_TYPE_MASK)
|
---|
818 | {
|
---|
819 | case RTFS_TYPE_DIRECTORY:
|
---|
820 | rc = rtFsIso9660Dir_New(pThis->Core.pVol, pThis, pDirRec, cDirRecs, offDirRec, phVfsDir, NULL /*ppDir*/);
|
---|
821 | break;
|
---|
822 |
|
---|
823 | case RTFS_TYPE_SYMLINK:
|
---|
824 | rc = VERR_NOT_IMPLEMENTED;
|
---|
825 | break;
|
---|
826 | case RTFS_TYPE_FILE:
|
---|
827 | case RTFS_TYPE_DEV_BLOCK:
|
---|
828 | case RTFS_TYPE_DEV_CHAR:
|
---|
829 | case RTFS_TYPE_FIFO:
|
---|
830 | case RTFS_TYPE_SOCKET:
|
---|
831 | rc = VERR_NOT_A_DIRECTORY;
|
---|
832 | break;
|
---|
833 | default:
|
---|
834 | case RTFS_TYPE_WHITEOUT:
|
---|
835 | rc = VERR_PATH_NOT_FOUND;
|
---|
836 | break;
|
---|
837 | }
|
---|
838 | }
|
---|
839 | else if (rc == VERR_FILE_NOT_FOUND)
|
---|
840 | rc = VERR_PATH_NOT_FOUND;
|
---|
841 | }
|
---|
842 | else
|
---|
843 | rc = VERR_PATH_NOT_FOUND;
|
---|
844 | return rc;
|
---|
845 | }
|
---|
846 |
|
---|
847 |
|
---|
848 | /**
|
---|
849 | * @interface_method_impl{RTVFSDIROPS,pfnOpenFile}
|
---|
850 | */
|
---|
851 | static DECLCALLBACK(int) rtFsIso9660Dir_OpenFile(void *pvThis, const char *pszFilename, uint32_t fOpen, PRTVFSFILE phVfsFile)
|
---|
852 | {
|
---|
853 | PRTFSISO9660DIR pThis = (PRTFSISO9660DIR)pvThis;
|
---|
854 |
|
---|
855 | /*
|
---|
856 | * We cannot create or replace anything, just open stuff.
|
---|
857 | */
|
---|
858 | if ( (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_CREATE
|
---|
859 | || (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_CREATE_REPLACE)
|
---|
860 | return VERR_WRITE_PROTECT;
|
---|
861 |
|
---|
862 | /*
|
---|
863 | * Try open file.
|
---|
864 | */
|
---|
865 | PCISO9660DIRREC pDirRec;
|
---|
866 | uint64_t offDirRec;
|
---|
867 | uint32_t cDirRecs;
|
---|
868 | RTFMODE fMode;
|
---|
869 | int rc = rtFsIso9660Dir_FindEntry(pThis, pszFilename, &offDirRec, &pDirRec, &cDirRecs, &fMode);
|
---|
870 | Log2(("rtFsIso9660Dir_OpenFile: FindEntry(,%s,) -> %Rrc\n", pszFilename, rc));
|
---|
871 | if (RT_SUCCESS(rc))
|
---|
872 | {
|
---|
873 | switch (fMode & RTFS_TYPE_MASK)
|
---|
874 | {
|
---|
875 | case RTFS_TYPE_FILE:
|
---|
876 | rc = rtFsIso9660File_New(pThis->Core.pVol, pThis, pDirRec, cDirRecs, offDirRec, fOpen, phVfsFile);
|
---|
877 | break;
|
---|
878 |
|
---|
879 | case RTFS_TYPE_SYMLINK:
|
---|
880 | case RTFS_TYPE_DEV_BLOCK:
|
---|
881 | case RTFS_TYPE_DEV_CHAR:
|
---|
882 | case RTFS_TYPE_FIFO:
|
---|
883 | case RTFS_TYPE_SOCKET:
|
---|
884 | case RTFS_TYPE_WHITEOUT:
|
---|
885 | rc = VERR_NOT_IMPLEMENTED;
|
---|
886 | break;
|
---|
887 |
|
---|
888 | case RTFS_TYPE_DIRECTORY:
|
---|
889 | rc = VERR_NOT_A_FILE;
|
---|
890 | break;
|
---|
891 |
|
---|
892 | default:
|
---|
893 | rc = VERR_PATH_NOT_FOUND;
|
---|
894 | break;
|
---|
895 | }
|
---|
896 | }
|
---|
897 | return rc;
|
---|
898 | }
|
---|
899 |
|
---|
900 |
|
---|
901 | /**
|
---|
902 | * @interface_method_impl{RTVFSDIROPS,pfnOpenDir}
|
---|
903 | */
|
---|
904 | static DECLCALLBACK(int) rtFsIso9660Dir_OpenDir(void *pvThis, const char *pszSubDir, uint32_t fFlags, PRTVFSDIR phVfsDir)
|
---|
905 | {
|
---|
906 | RT_NOREF(pvThis, pszSubDir, fFlags, phVfsDir);
|
---|
907 | RTAssertMsg2("%s: %s\n", __FUNCTION__, pszSubDir);
|
---|
908 | return VERR_NOT_IMPLEMENTED;
|
---|
909 | }
|
---|
910 |
|
---|
911 |
|
---|
912 | /**
|
---|
913 | * @interface_method_impl{RTVFSDIROPS,pfnCreateDir}
|
---|
914 | */
|
---|
915 | static DECLCALLBACK(int) rtFsIso9660Dir_CreateDir(void *pvThis, const char *pszSubDir, RTFMODE fMode, PRTVFSDIR phVfsDir)
|
---|
916 | {
|
---|
917 | RT_NOREF(pvThis, pszSubDir, fMode, phVfsDir);
|
---|
918 | RTAssertMsg2("%s: %s\n", __FUNCTION__, pszSubDir);
|
---|
919 | return VERR_NOT_IMPLEMENTED;
|
---|
920 | }
|
---|
921 |
|
---|
922 |
|
---|
923 | /**
|
---|
924 | * @interface_method_impl{RTVFSDIROPS,pfnOpenSymlink}
|
---|
925 | */
|
---|
926 | static DECLCALLBACK(int) rtFsIso9660Dir_OpenSymlink(void *pvThis, const char *pszSymlink, PRTVFSSYMLINK phVfsSymlink)
|
---|
927 | {
|
---|
928 | RT_NOREF(pvThis, pszSymlink, phVfsSymlink);
|
---|
929 | RTAssertMsg2("%s: %s\n", __FUNCTION__, pszSymlink);
|
---|
930 | return VERR_NOT_SUPPORTED;
|
---|
931 | }
|
---|
932 |
|
---|
933 |
|
---|
934 | /**
|
---|
935 | * @interface_method_impl{RTVFSDIROPS,pfnCreateSymlink}
|
---|
936 | */
|
---|
937 | static DECLCALLBACK(int) rtFsIso9660Dir_CreateSymlink(void *pvThis, const char *pszSymlink, const char *pszTarget,
|
---|
938 | RTSYMLINKTYPE enmType, PRTVFSSYMLINK phVfsSymlink)
|
---|
939 | {
|
---|
940 | RT_NOREF(pvThis, pszSymlink, pszTarget, enmType, phVfsSymlink);
|
---|
941 | RTAssertMsg2("%s: %s\n", __FUNCTION__, pszSymlink);
|
---|
942 | return VERR_NOT_SUPPORTED;
|
---|
943 | }
|
---|
944 |
|
---|
945 |
|
---|
946 | /**
|
---|
947 | * @interface_method_impl{RTVFSDIROPS,pfnUnlinkEntry}
|
---|
948 | */
|
---|
949 | static DECLCALLBACK(int) rtFsIso9660Dir_UnlinkEntry(void *pvThis, const char *pszEntry, RTFMODE fType)
|
---|
950 | {
|
---|
951 | RT_NOREF(pvThis, pszEntry, fType);
|
---|
952 | RTAssertMsg2("%s: %s\n", __FUNCTION__, pszEntry);
|
---|
953 | return VERR_NOT_IMPLEMENTED;
|
---|
954 | }
|
---|
955 |
|
---|
956 |
|
---|
957 | /**
|
---|
958 | * @interface_method_impl{RTVFSDIROPS,pfnRewindDir}
|
---|
959 | */
|
---|
960 | static DECLCALLBACK(int) rtFsIso9660Dir_RewindDir(void *pvThis)
|
---|
961 | {
|
---|
962 | RT_NOREF(pvThis);
|
---|
963 | RTAssertMsg2("%s\n", __FUNCTION__);
|
---|
964 | return VERR_NOT_IMPLEMENTED;
|
---|
965 | }
|
---|
966 |
|
---|
967 |
|
---|
968 | /**
|
---|
969 | * @interface_method_impl{RTVFSDIROPS,pfnReadDir}
|
---|
970 | */
|
---|
971 | static DECLCALLBACK(int) rtFsIso9660Dir_ReadDir(void *pvThis, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry,
|
---|
972 | RTFSOBJATTRADD enmAddAttr)
|
---|
973 | {
|
---|
974 | RT_NOREF(pvThis, pDirEntry, pcbDirEntry, enmAddAttr);
|
---|
975 | RTAssertMsg2("%s\n", __FUNCTION__);
|
---|
976 | return VERR_NOT_IMPLEMENTED;
|
---|
977 | }
|
---|
978 |
|
---|
979 |
|
---|
980 | /**
|
---|
981 | * FAT file operations.
|
---|
982 | */
|
---|
983 | static const RTVFSDIROPS g_rtFsIso9660DirOps =
|
---|
984 | {
|
---|
985 | { /* Obj */
|
---|
986 | RTVFSOBJOPS_VERSION,
|
---|
987 | RTVFSOBJTYPE_DIR,
|
---|
988 | "ISO 9660 Dir",
|
---|
989 | rtFsIso9660Dir_Close,
|
---|
990 | rtFsIso9660Obj_QueryInfo,
|
---|
991 | RTVFSOBJOPS_VERSION
|
---|
992 | },
|
---|
993 | RTVFSDIROPS_VERSION,
|
---|
994 | 0,
|
---|
995 | { /* ObjSet */
|
---|
996 | RTVFSOBJSETOPS_VERSION,
|
---|
997 | RT_OFFSETOF(RTVFSDIROPS, Obj) - RT_OFFSETOF(RTVFSDIROPS, ObjSet),
|
---|
998 | rtFsIso9660Obj_SetMode,
|
---|
999 | rtFsIso9660Obj_SetTimes,
|
---|
1000 | rtFsIso9660Obj_SetOwner,
|
---|
1001 | RTVFSOBJSETOPS_VERSION
|
---|
1002 | },
|
---|
1003 | rtFsIso9660Dir_TraversalOpen,
|
---|
1004 | rtFsIso9660Dir_OpenFile,
|
---|
1005 | rtFsIso9660Dir_OpenDir,
|
---|
1006 | rtFsIso9660Dir_CreateDir,
|
---|
1007 | rtFsIso9660Dir_OpenSymlink,
|
---|
1008 | rtFsIso9660Dir_CreateSymlink,
|
---|
1009 | rtFsIso9660Dir_UnlinkEntry,
|
---|
1010 | rtFsIso9660Dir_RewindDir,
|
---|
1011 | rtFsIso9660Dir_ReadDir,
|
---|
1012 | RTVFSDIROPS_VERSION,
|
---|
1013 | };
|
---|
1014 |
|
---|
1015 |
|
---|
1016 | /**
|
---|
1017 | * Adds an open child to the parent directory.
|
---|
1018 | *
|
---|
1019 | * Maintains an additional reference to the parent dir to prevent it from going
|
---|
1020 | * away. If @a pDir is the root directory, it also ensures the volume is
|
---|
1021 | * referenced and sticks around until the last open object is gone.
|
---|
1022 | *
|
---|
1023 | * @param pDir The directory.
|
---|
1024 | * @param pChild The child being opened.
|
---|
1025 | * @sa rtFsIso9660Dir_RemoveOpenChild
|
---|
1026 | */
|
---|
1027 | static void rtFsIso9660Dir_AddOpenChild(PRTFSISO9660DIR pDir, PRTFSISO9660OBJ pChild)
|
---|
1028 | {
|
---|
1029 | /* First child that gets opened retains the parent directory. This is
|
---|
1030 | released by the final open child. */
|
---|
1031 | if (RTListIsEmpty(&pDir->OpenChildren))
|
---|
1032 | {
|
---|
1033 | uint32_t cRefs = RTVfsDirRetain(pDir->hVfsSelf);
|
---|
1034 | Assert(cRefs != UINT32_MAX); NOREF(cRefs);
|
---|
1035 |
|
---|
1036 | /* Root also retains the whole file system. */
|
---|
1037 | if (!pDir->Core.pParentDir)
|
---|
1038 | {
|
---|
1039 | Assert(pDir->Core.pVol);
|
---|
1040 | Assert(pDir->Core.pVol == pChild->pVol);
|
---|
1041 | cRefs = RTVfsRetain(pDir->Core.pVol->hVfsSelf);
|
---|
1042 | Assert(cRefs != UINT32_MAX); NOREF(cRefs);
|
---|
1043 | }
|
---|
1044 | }
|
---|
1045 | RTListAppend(&pDir->OpenChildren, &pChild->Entry);
|
---|
1046 | pChild->pParentDir = pDir;
|
---|
1047 | }
|
---|
1048 |
|
---|
1049 |
|
---|
1050 | /**
|
---|
1051 | * Removes an open child to the parent directory.
|
---|
1052 | *
|
---|
1053 | * @param pDir The directory.
|
---|
1054 | * @param pChild The child being removed.
|
---|
1055 | *
|
---|
1056 | * @remarks This is the very last thing you do as it may cause a few other
|
---|
1057 | * objects to be released recursively (parent dir and the volume).
|
---|
1058 | *
|
---|
1059 | * @sa rtFsIso9660Dir_AddOpenChild
|
---|
1060 | */
|
---|
1061 | static void rtFsIso9660Dir_RemoveOpenChild(PRTFSISO9660DIR pDir, PRTFSISO9660OBJ pChild)
|
---|
1062 | {
|
---|
1063 | AssertReturnVoid(pChild->pParentDir == pDir);
|
---|
1064 | RTListNodeRemove(&pChild->Entry);
|
---|
1065 | pChild->pParentDir = NULL;
|
---|
1066 |
|
---|
1067 | /* Final child? If so, release directory. */
|
---|
1068 | if (RTListIsEmpty(&pDir->OpenChildren))
|
---|
1069 | {
|
---|
1070 | uint32_t cRefs = RTVfsDirRelease(pDir->hVfsSelf);
|
---|
1071 | Assert(cRefs != UINT32_MAX); NOREF(cRefs);
|
---|
1072 |
|
---|
1073 | /* Root directory releases the file system as well. Since the volume
|
---|
1074 | holds a reference to the root directory, it will remain valid after
|
---|
1075 | the above release. */
|
---|
1076 | if (!pDir->Core.pParentDir)
|
---|
1077 | {
|
---|
1078 | Assert(cRefs > 0);
|
---|
1079 | Assert(pDir->Core.pVol);
|
---|
1080 | Assert(pDir->Core.pVol == pChild->pVol);
|
---|
1081 | cRefs = RTVfsRetain(pDir->Core.pVol->hVfsSelf);
|
---|
1082 | Assert(cRefs != UINT32_MAX); NOREF(cRefs);
|
---|
1083 | }
|
---|
1084 | }
|
---|
1085 | }
|
---|
1086 |
|
---|
1087 |
|
---|
1088 | #ifdef LOG_ENABLED
|
---|
1089 | /**
|
---|
1090 | * Logs the content of a directory.
|
---|
1091 | */
|
---|
1092 | static void rtFsIso9660Dir_LogContent(PRTFSISO9660DIR pThis)
|
---|
1093 | {
|
---|
1094 | if (LogIs2Enabled())
|
---|
1095 | {
|
---|
1096 | uint32_t offRec = 0;
|
---|
1097 | while (offRec < pThis->cbDir)
|
---|
1098 | {
|
---|
1099 | PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offRec];
|
---|
1100 | if (pDirRec->cbDirRec == 0)
|
---|
1101 | break;
|
---|
1102 |
|
---|
1103 | RTUTF16 wszName[128];
|
---|
1104 | if (pThis->Core.pVol->fIsUtf16)
|
---|
1105 | {
|
---|
1106 | PRTUTF16 pwszDst = &wszName[pDirRec->bFileIdLength / sizeof(RTUTF16)];
|
---|
1107 | PCRTUTF16 pwszSrc = (PCRTUTF16)&pDirRec->achFileId[pDirRec->bFileIdLength];
|
---|
1108 | pwszSrc--;
|
---|
1109 | *pwszDst-- = '\0';
|
---|
1110 | while ((uintptr_t)pwszDst >= (uintptr_t)&wszName[0])
|
---|
1111 | {
|
---|
1112 | *pwszDst = RT_BE2H_U16(*pwszSrc);
|
---|
1113 | pwszDst--;
|
---|
1114 | pwszSrc--;
|
---|
1115 | }
|
---|
1116 | }
|
---|
1117 | else
|
---|
1118 | {
|
---|
1119 | PRTUTF16 pwszDst = wszName;
|
---|
1120 | for (uint32_t off = 0; off < pDirRec->bFileIdLength; off++)
|
---|
1121 | *pwszDst++ = pDirRec->achFileId[off];
|
---|
1122 | *pwszDst = '\0';
|
---|
1123 | }
|
---|
1124 |
|
---|
1125 | Log2(("ISO9660: %04x: rec=%#x ea=%#x cb=%#010RX32 off=%#010RX32 fl=%#04x %04u-%02u-%02u %02u:%02u:%02u%+03d unit=%#x igap=%#x idVol=%#x '%ls'\n",
|
---|
1126 | offRec,
|
---|
1127 | pDirRec->cbDirRec,
|
---|
1128 | pDirRec->cbExtAttr,
|
---|
1129 | ISO9660_GET_ENDIAN(&pDirRec->cbData),
|
---|
1130 | ISO9660_GET_ENDIAN(&pDirRec->offExtent),
|
---|
1131 | pDirRec->fFileFlags,
|
---|
1132 | pDirRec->RecTime.bYear + 1900,
|
---|
1133 | pDirRec->RecTime.bMonth,
|
---|
1134 | pDirRec->RecTime.bDay,
|
---|
1135 | pDirRec->RecTime.bHour,
|
---|
1136 | pDirRec->RecTime.bMinute,
|
---|
1137 | pDirRec->RecTime.bSecond,
|
---|
1138 | pDirRec->RecTime.offUtc*4/60,
|
---|
1139 | pDirRec->bFileUnitSize,
|
---|
1140 | pDirRec->bInterleaveGapSize,
|
---|
1141 | ISO9660_GET_ENDIAN(&pDirRec->VolumeSeqNo),
|
---|
1142 | wszName));
|
---|
1143 |
|
---|
1144 | uint32_t offSysUse = RT_OFFSETOF(ISO9660DIRREC, achFileId[pDirRec->bFileIdLength]) + !(pDirRec->bFileIdLength & 1);
|
---|
1145 | if (offSysUse < pDirRec->cbDirRec)
|
---|
1146 | {
|
---|
1147 | Log2(("ISO9660: system use:\n%.*Rhxd\n", pDirRec->cbDirRec - offSysUse, (uint8_t *)pDirRec + offSysUse));
|
---|
1148 | }
|
---|
1149 |
|
---|
1150 | /* advance */
|
---|
1151 | offRec += pDirRec->cbDirRec;
|
---|
1152 | }
|
---|
1153 | }
|
---|
1154 | }
|
---|
1155 | #endif /* LOG_ENABLED */
|
---|
1156 |
|
---|
1157 |
|
---|
1158 | /**
|
---|
1159 | * Instantiates a new directory.
|
---|
1160 | *
|
---|
1161 | * @returns IPRT status code.
|
---|
1162 | * @param pThis The FAT volume instance.
|
---|
1163 | * @param pParentDir The parent directory. This is NULL for the root
|
---|
1164 | * directory.
|
---|
1165 | * @param pDirRec The directory record.
|
---|
1166 | * @param cDirRecs Number of directory records if more than one.
|
---|
1167 | * @param offDirRec The byte offset of the directory record.
|
---|
1168 | * @param phVfsDir Where to return the directory handle.
|
---|
1169 | * @param ppDir Where to return the FAT directory instance data.
|
---|
1170 | */
|
---|
1171 | static int rtFsIso9660Dir_New(PRTFSISO9660VOL pThis, PRTFSISO9660DIR pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
|
---|
1172 | uint64_t offDirRec, PRTVFSDIR phVfsDir, PRTFSISO9660DIR *ppDir)
|
---|
1173 | {
|
---|
1174 | if (ppDir)
|
---|
1175 | *ppDir = NULL;
|
---|
1176 |
|
---|
1177 | PRTFSISO9660DIR pNewDir;
|
---|
1178 | int rc = RTVfsNewDir(&g_rtFsIso9660DirOps, sizeof(*pNewDir), 0 /*fFlags*/, pThis->hVfsSelf, NIL_RTVFSLOCK /*use volume lock*/,
|
---|
1179 | phVfsDir, (void **)&pNewDir);
|
---|
1180 | if (RT_SUCCESS(rc))
|
---|
1181 | {
|
---|
1182 | /*
|
---|
1183 | * Initialize it all so rtFsIso9660Dir_Close doesn't trip up in anyway.
|
---|
1184 | */
|
---|
1185 | rtFsIso9660Obj_InitFromDirRec(&pNewDir->Core, pDirRec, cDirRecs, offDirRec, pThis);
|
---|
1186 | RTListInit(&pNewDir->OpenChildren);
|
---|
1187 | pNewDir->hVfsSelf = *phVfsDir;
|
---|
1188 | pNewDir->cbDir = ISO9660_GET_ENDIAN(&pDirRec->cbData);
|
---|
1189 | pNewDir->pbDir = (uint8_t *)RTMemAllocZ(pNewDir->cbDir + 256);
|
---|
1190 | if (pNewDir->pbDir)
|
---|
1191 | {
|
---|
1192 | rc = RTVfsFileReadAt(pThis->hVfsBacking, pNewDir->Core.FirstExtent.offDisk, pNewDir->pbDir, pNewDir->cbDir, NULL);
|
---|
1193 | if (RT_SUCCESS(rc))
|
---|
1194 | {
|
---|
1195 | #ifdef LOG_ENABLED
|
---|
1196 | rtFsIso9660Dir_LogContent(pNewDir);
|
---|
1197 | #endif
|
---|
1198 |
|
---|
1199 | /*
|
---|
1200 | * Link into parent directory so we can use it to update
|
---|
1201 | * our directory entry.
|
---|
1202 | */
|
---|
1203 | if (pParentDir)
|
---|
1204 | rtFsIso9660Dir_AddOpenChild(pParentDir, &pNewDir->Core);
|
---|
1205 | if (ppDir)
|
---|
1206 | *ppDir = pNewDir;
|
---|
1207 | return VINF_SUCCESS;
|
---|
1208 | }
|
---|
1209 | }
|
---|
1210 | else
|
---|
1211 | rc = VERR_NO_MEMORY;
|
---|
1212 | RTVfsDirRelease(*phVfsDir);
|
---|
1213 | }
|
---|
1214 | *phVfsDir = NIL_RTVFSDIR;
|
---|
1215 | if (ppDir)
|
---|
1216 | *ppDir = NULL;
|
---|
1217 | return rc;
|
---|
1218 | }
|
---|
1219 |
|
---|
1220 |
|
---|
1221 |
|
---|
1222 |
|
---|
1223 | /**
|
---|
1224 | * @interface_method_impl{RTVFSOBJOPS::Obj,pfnClose}
|
---|
1225 | */
|
---|
1226 | static DECLCALLBACK(int) rtFsIso9660Vol_Close(void *pvThis)
|
---|
1227 | {
|
---|
1228 | PRTFSISO9660VOL pThis = (PRTFSISO9660VOL)pvThis;
|
---|
1229 |
|
---|
1230 | if (pThis->hVfsRootDir != NIL_RTVFSDIR)
|
---|
1231 | {
|
---|
1232 | Assert(RTListIsEmpty(&pThis->pRootDir->OpenChildren));
|
---|
1233 | uint32_t cRefs = RTVfsDirRelease(pThis->hVfsRootDir);
|
---|
1234 | Assert(cRefs == 0); NOREF(cRefs);
|
---|
1235 | pThis->hVfsRootDir = NIL_RTVFSDIR;
|
---|
1236 | pThis->pRootDir = NULL;
|
---|
1237 | }
|
---|
1238 |
|
---|
1239 | RTVfsFileRelease(pThis->hVfsBacking);
|
---|
1240 | pThis->hVfsBacking = NIL_RTVFSFILE;
|
---|
1241 |
|
---|
1242 | return VINF_SUCCESS;
|
---|
1243 | }
|
---|
1244 |
|
---|
1245 |
|
---|
1246 | /**
|
---|
1247 | * @interface_method_impl{RTVFSOBJOPS::Obj,pfnQueryInfo}
|
---|
1248 | */
|
---|
1249 | static DECLCALLBACK(int) rtFsIso9660Vol_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
|
---|
1250 | {
|
---|
1251 | RT_NOREF(pvThis, pObjInfo, enmAddAttr);
|
---|
1252 | return VERR_WRONG_TYPE;
|
---|
1253 | }
|
---|
1254 |
|
---|
1255 |
|
---|
1256 | /**
|
---|
1257 | * @interface_method_impl{RTVFSOPS,pfnOpenRoo}
|
---|
1258 | */
|
---|
1259 | static DECLCALLBACK(int) rtFsIso9660Vol_OpenRoot(void *pvThis, PRTVFSDIR phVfsDir)
|
---|
1260 | {
|
---|
1261 | PRTFSISO9660VOL pThis = (PRTFSISO9660VOL)pvThis;
|
---|
1262 | uint32_t cRefs = RTVfsDirRetain(pThis->hVfsRootDir);
|
---|
1263 | if (cRefs != UINT32_MAX)
|
---|
1264 | {
|
---|
1265 | *phVfsDir = pThis->hVfsRootDir;
|
---|
1266 | return VINF_SUCCESS;
|
---|
1267 | }
|
---|
1268 | return VERR_INTERNAL_ERROR_5;
|
---|
1269 | }
|
---|
1270 |
|
---|
1271 |
|
---|
1272 | /**
|
---|
1273 | * @interface_method_impl{RTVFSOPS,pfnIsRangeInUse}
|
---|
1274 | */
|
---|
1275 | static DECLCALLBACK(int) rtFsIso9660Vol_IsRangeInUse(void *pvThis, RTFOFF off, size_t cb, bool *pfUsed)
|
---|
1276 | {
|
---|
1277 | RT_NOREF(pvThis, off, cb, pfUsed);
|
---|
1278 | return VERR_NOT_IMPLEMENTED;
|
---|
1279 | }
|
---|
1280 |
|
---|
1281 |
|
---|
1282 | DECL_HIDDEN_CONST(const RTVFSOPS) g_rtFsIso9660VolOps =
|
---|
1283 | {
|
---|
1284 | { /* Obj */
|
---|
1285 | RTVFSOBJOPS_VERSION,
|
---|
1286 | RTVFSOBJTYPE_VFS,
|
---|
1287 | "ISO 9660",
|
---|
1288 | rtFsIso9660Vol_Close,
|
---|
1289 | rtFsIso9660Vol_QueryInfo,
|
---|
1290 | RTVFSOBJOPS_VERSION
|
---|
1291 | },
|
---|
1292 | RTVFSOPS_VERSION,
|
---|
1293 | 0 /* fFeatures */,
|
---|
1294 | rtFsIso9660Vol_OpenRoot,
|
---|
1295 | rtFsIso9660Vol_IsRangeInUse,
|
---|
1296 | RTVFSOPS_VERSION
|
---|
1297 | };
|
---|
1298 |
|
---|
1299 |
|
---|
1300 |
|
---|
1301 | #ifdef LOG_ENABLED
|
---|
1302 |
|
---|
1303 | /** Logging helper. */
|
---|
1304 | static size_t rtFsIso9660VolGetStrippedLength(const char *pachField, size_t cchField)
|
---|
1305 | {
|
---|
1306 | while (cchField > 0 && pachField[cchField - 1] == ' ')
|
---|
1307 | cchField--;
|
---|
1308 | return cchField;
|
---|
1309 | }
|
---|
1310 |
|
---|
1311 |
|
---|
1312 | /**
|
---|
1313 | * Logs the primary or supplementary volume descriptor
|
---|
1314 | *
|
---|
1315 | * @param pVolDesc The descriptor.
|
---|
1316 | */
|
---|
1317 | static void rtFsIso9660VolLogPrimarySupplementaryVolDesc(PCISO9660SUPVOLDESC pVolDesc)
|
---|
1318 | {
|
---|
1319 | if (LogIs2Enabled())
|
---|
1320 | {
|
---|
1321 | Log2(("ISO9660: fVolumeFlags: %#RX8\n", pVolDesc->fVolumeFlags));
|
---|
1322 | Log2(("ISO9660: achSystemId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achSystemId, sizeof(pVolDesc->achSystemId)), pVolDesc->achSystemId));
|
---|
1323 | Log2(("ISO9660: achVolumeId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achVolumeId, sizeof(pVolDesc->achVolumeId)), pVolDesc->achVolumeId));
|
---|
1324 | Log2(("ISO9660: Unused73: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->Unused73.be), RT_LE2H_U32(pVolDesc->Unused73.le)));
|
---|
1325 | Log2(("ISO9660: VolumeSpaceSize: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le)));
|
---|
1326 | Log2(("ISO9660: abEscapeSequences: '%.*s'\n", rtFsIso9660VolGetStrippedLength((char *)pVolDesc->abEscapeSequences, sizeof(pVolDesc->abEscapeSequences)), pVolDesc->abEscapeSequences));
|
---|
1327 | Log2(("ISO9660: cVolumesInSet: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le)));
|
---|
1328 | Log2(("ISO9660: VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le)));
|
---|
1329 | Log2(("ISO9660: cbLogicalBlock: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le)));
|
---|
1330 | Log2(("ISO9660: cbPathTable: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->cbPathTable.be), RT_LE2H_U32(pVolDesc->cbPathTable.le)));
|
---|
1331 | Log2(("ISO9660: offTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offTypeLPathTable)));
|
---|
1332 | Log2(("ISO9660: offOptionalTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offOptionalTypeLPathTable)));
|
---|
1333 | Log2(("ISO9660: offTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offTypeMPathTable)));
|
---|
1334 | Log2(("ISO9660: offOptionalTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offOptionalTypeMPathTable)));
|
---|
1335 | Log2(("ISO9660: achVolumeSetId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achVolumeSetId, sizeof(pVolDesc->achVolumeSetId)), pVolDesc->achVolumeSetId));
|
---|
1336 | Log2(("ISO9660: achPublisherId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achPublisherId, sizeof(pVolDesc->achPublisherId)), pVolDesc->achPublisherId));
|
---|
1337 | Log2(("ISO9660: achDataPreparerId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achDataPreparerId, sizeof(pVolDesc->achDataPreparerId)), pVolDesc->achDataPreparerId));
|
---|
1338 | Log2(("ISO9660: achApplicationId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achApplicationId, sizeof(pVolDesc->achApplicationId)), pVolDesc->achApplicationId));
|
---|
1339 | Log2(("ISO9660: achCopyrightFileId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achCopyrightFileId, sizeof(pVolDesc->achCopyrightFileId)), pVolDesc->achCopyrightFileId));
|
---|
1340 | Log2(("ISO9660: achAbstractFileId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achAbstractFileId, sizeof(pVolDesc->achAbstractFileId)), pVolDesc->achAbstractFileId));
|
---|
1341 | Log2(("ISO9660: achBibliographicFileId: '%.*s'\n", rtFsIso9660VolGetStrippedLength(pVolDesc->achBibliographicFileId, sizeof(pVolDesc->achBibliographicFileId)), pVolDesc->achBibliographicFileId));
|
---|
1342 | Log2(("ISO9660: BirthTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
|
---|
1343 | pVolDesc->BirthTime.achYear,
|
---|
1344 | pVolDesc->BirthTime.achMonth,
|
---|
1345 | pVolDesc->BirthTime.achDay,
|
---|
1346 | pVolDesc->BirthTime.achHour,
|
---|
1347 | pVolDesc->BirthTime.achMinute,
|
---|
1348 | pVolDesc->BirthTime.achSecond,
|
---|
1349 | pVolDesc->BirthTime.achCentisecond,
|
---|
1350 | pVolDesc->BirthTime.offUtc*4/60));
|
---|
1351 | Log2(("ISO9660: ModifyTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
|
---|
1352 | pVolDesc->ModifyTime.achYear,
|
---|
1353 | pVolDesc->ModifyTime.achMonth,
|
---|
1354 | pVolDesc->ModifyTime.achDay,
|
---|
1355 | pVolDesc->ModifyTime.achHour,
|
---|
1356 | pVolDesc->ModifyTime.achMinute,
|
---|
1357 | pVolDesc->ModifyTime.achSecond,
|
---|
1358 | pVolDesc->ModifyTime.achCentisecond,
|
---|
1359 | pVolDesc->ModifyTime.offUtc*4/60));
|
---|
1360 | Log2(("ISO9660: ExpireTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
|
---|
1361 | pVolDesc->ExpireTime.achYear,
|
---|
1362 | pVolDesc->ExpireTime.achMonth,
|
---|
1363 | pVolDesc->ExpireTime.achDay,
|
---|
1364 | pVolDesc->ExpireTime.achHour,
|
---|
1365 | pVolDesc->ExpireTime.achMinute,
|
---|
1366 | pVolDesc->ExpireTime.achSecond,
|
---|
1367 | pVolDesc->ExpireTime.achCentisecond,
|
---|
1368 | pVolDesc->ExpireTime.offUtc*4/60));
|
---|
1369 | Log2(("ISO9660: EffectiveTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
|
---|
1370 | pVolDesc->EffectiveTime.achYear,
|
---|
1371 | pVolDesc->EffectiveTime.achMonth,
|
---|
1372 | pVolDesc->EffectiveTime.achDay,
|
---|
1373 | pVolDesc->EffectiveTime.achHour,
|
---|
1374 | pVolDesc->EffectiveTime.achMinute,
|
---|
1375 | pVolDesc->EffectiveTime.achSecond,
|
---|
1376 | pVolDesc->EffectiveTime.achCentisecond,
|
---|
1377 | pVolDesc->EffectiveTime.offUtc*4/60));
|
---|
1378 | Log2(("ISO9660: bFileStructureVersion: %#RX8\n", pVolDesc->bFileStructureVersion));
|
---|
1379 | Log2(("ISO9660: bReserved883: %#RX8\n", pVolDesc->bReserved883));
|
---|
1380 |
|
---|
1381 | Log2(("ISO9660: RootDir.cbDirRec: %#RX8\n", pVolDesc->RootDir.DirRec.cbDirRec));
|
---|
1382 | Log2(("ISO9660: RootDir.cbExtAttr: %#RX8\n", pVolDesc->RootDir.DirRec.cbExtAttr));
|
---|
1383 | Log2(("ISO9660: RootDir.offExtent: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.offExtent.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.offExtent.le)));
|
---|
1384 | Log2(("ISO9660: RootDir.cbData: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.cbData.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.cbData.le)));
|
---|
1385 | Log2(("ISO9660: RootDir.RecTime: %04u-%02u-%02u %02u:%02u:%02u%+03d\n",
|
---|
1386 | pVolDesc->RootDir.DirRec.RecTime.bYear + 1900,
|
---|
1387 | pVolDesc->RootDir.DirRec.RecTime.bMonth,
|
---|
1388 | pVolDesc->RootDir.DirRec.RecTime.bDay,
|
---|
1389 | pVolDesc->RootDir.DirRec.RecTime.bHour,
|
---|
1390 | pVolDesc->RootDir.DirRec.RecTime.bMinute,
|
---|
1391 | pVolDesc->RootDir.DirRec.RecTime.bSecond,
|
---|
1392 | pVolDesc->RootDir.DirRec.RecTime.offUtc*4/60));
|
---|
1393 | Log2(("ISO9660: RootDir.RecTime.fFileFlags: %RX8\n", pVolDesc->RootDir.DirRec.fFileFlags));
|
---|
1394 | Log2(("ISO9660: RootDir.RecTime.bFileUnitSize: %RX8\n", pVolDesc->RootDir.DirRec.bFileUnitSize));
|
---|
1395 | Log2(("ISO9660: RootDir.RecTime.bInterleaveGapSize: %RX8\n", pVolDesc->RootDir.DirRec.bInterleaveGapSize));
|
---|
1396 | Log2(("ISO9660: RootDir.RecTime.VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.le)));
|
---|
1397 | Log2(("ISO9660: RootDir.RecTime.bFileIdLength: %RX8\n", pVolDesc->RootDir.DirRec.bFileIdLength));
|
---|
1398 | Log2(("ISO9660: RootDir.RecTime.achFileId: '%.*s'\n", pVolDesc->RootDir.DirRec.bFileIdLength, pVolDesc->RootDir.DirRec.achFileId));
|
---|
1399 | uint32_t offSysUse = RT_OFFSETOF(ISO9660DIRREC, achFileId[pVolDesc->RootDir.DirRec.bFileIdLength])
|
---|
1400 | + !(pVolDesc->RootDir.DirRec.bFileIdLength & 1);
|
---|
1401 | if (offSysUse < pVolDesc->RootDir.DirRec.cbDirRec)
|
---|
1402 | {
|
---|
1403 | Log2(("ISO9660: RootDir System Use:\n%.*Rhxd\n",
|
---|
1404 | pVolDesc->RootDir.DirRec.cbDirRec - offSysUse, &pVolDesc->RootDir.ab[offSysUse]));
|
---|
1405 | }
|
---|
1406 | }
|
---|
1407 | }
|
---|
1408 |
|
---|
1409 | #endif /* LOG_ENABLED */
|
---|
1410 |
|
---|
1411 | /**
|
---|
1412 | * Deal with a root directory from a primary or supplemental descriptor.
|
---|
1413 | *
|
---|
1414 | * @returns IPRT status code.
|
---|
1415 | * @param pThis The ISO 9660 instance being initialized.
|
---|
1416 | * @param pRootDir The root directory record to check out.
|
---|
1417 | * @param pDstRootDir Where to store a copy of the root dir record.
|
---|
1418 | * @param pErrInfo Where to return additional error info. Can be NULL.
|
---|
1419 | */
|
---|
1420 | static int rtFsIso9660VolHandleRootDir(PRTFSISO9660VOL pThis, PCISO9660DIRREC pRootDir,
|
---|
1421 | PISO9660DIRREC pDstRootDir, PRTERRINFO pErrInfo)
|
---|
1422 | {
|
---|
1423 | if (pRootDir->cbDirRec < RT_OFFSETOF(ISO9660DIRREC, achFileId))
|
---|
1424 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Root dir record size is too small: %#x (min %#x)",
|
---|
1425 | pRootDir->cbDirRec, RT_OFFSETOF(ISO9660DIRREC, achFileId));
|
---|
1426 |
|
---|
1427 | if (!(pRootDir->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY))
|
---|
1428 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT,
|
---|
1429 | "Root dir is not flagged as directory: %#x", pRootDir->fFileFlags);
|
---|
1430 | if (pRootDir->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)
|
---|
1431 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT,
|
---|
1432 | "Root dir is cannot be multi-extent: %#x", pRootDir->fFileFlags);
|
---|
1433 |
|
---|
1434 | if (RT_LE2H_U32(pRootDir->cbData.le) != RT_BE2H_U32(pRootDir->cbData.be))
|
---|
1435 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir size: {%#RX32,%#RX32}",
|
---|
1436 | RT_BE2H_U32(pRootDir->cbData.be), RT_LE2H_U32(pRootDir->cbData.le));
|
---|
1437 | if (RT_LE2H_U32(pRootDir->cbData.le) == 0)
|
---|
1438 | return RTErrInfoSet(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Zero sized root dir");
|
---|
1439 |
|
---|
1440 | if (RT_LE2H_U32(pRootDir->offExtent.le) != RT_BE2H_U32(pRootDir->offExtent.be))
|
---|
1441 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir extent: {%#RX32,%#RX32}",
|
---|
1442 | RT_BE2H_U32(pRootDir->offExtent.be), RT_LE2H_U32(pRootDir->offExtent.le));
|
---|
1443 |
|
---|
1444 | if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != RT_BE2H_U16(pRootDir->VolumeSeqNo.be))
|
---|
1445 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir volume sequence ID: {%#RX16,%#RX16}",
|
---|
1446 | RT_BE2H_U16(pRootDir->VolumeSeqNo.be), RT_LE2H_U16(pRootDir->VolumeSeqNo.le));
|
---|
1447 | if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != pThis->idPrimaryVol)
|
---|
1448 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1449 | "Expected root dir to have same volume sequence number as primary volume: %#x, expected %#x",
|
---|
1450 | RT_LE2H_U16(pRootDir->VolumeSeqNo.le), pThis->idPrimaryVol);
|
---|
1451 |
|
---|
1452 | /*
|
---|
1453 | * Seems okay, copy it.
|
---|
1454 | */
|
---|
1455 | *pDstRootDir = *pRootDir;
|
---|
1456 | return VINF_SUCCESS;
|
---|
1457 | }
|
---|
1458 |
|
---|
1459 |
|
---|
1460 | /**
|
---|
1461 | * Deal with a primary volume descriptor.
|
---|
1462 | *
|
---|
1463 | * @returns IPRT status code.
|
---|
1464 | * @param pThis The ISO 9660 instance being initialized.
|
---|
1465 | * @param pVolDesc The volume descriptor to handle.
|
---|
1466 | * @param offVolDesc The disk offset of the volume descriptor.
|
---|
1467 | * @param pRootDir Where to return a copy of the root directory record.
|
---|
1468 | * @param poffRootDirRec Where to return the disk offset of the root dir.
|
---|
1469 | * @param pErrInfo Where to return additional error info. Can be NULL.
|
---|
1470 | */
|
---|
1471 | static int rtFsIso9660VolHandlePrimaryVolDesc(PRTFSISO9660VOL pThis, PCISO9660PRIMARYVOLDESC pVolDesc, uint32_t offVolDesc,
|
---|
1472 | PISO9660DIRREC pRootDir, uint64_t *poffRootDirRec, PRTERRINFO pErrInfo)
|
---|
1473 | {
|
---|
1474 | if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION)
|
---|
1475 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1476 | "Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion);
|
---|
1477 |
|
---|
1478 | /*
|
---|
1479 | * We need the block size ...
|
---|
1480 | */
|
---|
1481 | pThis->cbBlock = RT_LE2H_U16(pVolDesc->cbLogicalBlock.le);
|
---|
1482 | if ( pThis->cbBlock != RT_BE2H_U16(pVolDesc->cbLogicalBlock.be)
|
---|
1483 | || !RT_IS_POWER_OF_TWO(pThis->cbBlock)
|
---|
1484 | || pThis->cbBlock / pThis->cbSector < 1)
|
---|
1485 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid logical block size: {%#RX16,%#RX16}",
|
---|
1486 | RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le));
|
---|
1487 | if (pThis->cbBlock / pThis->cbSector > 128)
|
---|
1488 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported block size: %#x\n", pThis->cbBlock);
|
---|
1489 |
|
---|
1490 | /*
|
---|
1491 | * ... volume space size ...
|
---|
1492 | */
|
---|
1493 | pThis->cBlocksInPrimaryVolumeSpace = RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le);
|
---|
1494 | if (pThis->cBlocksInPrimaryVolumeSpace != RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be))
|
---|
1495 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume space size: {%#RX32,%#RX32}",
|
---|
1496 | RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le));
|
---|
1497 | pThis->cbPrimaryVolumeSpace = pThis->cBlocksInPrimaryVolumeSpace * (uint64_t)pThis->cbBlock;
|
---|
1498 |
|
---|
1499 | /*
|
---|
1500 | * ... number of volumes in the set ...
|
---|
1501 | */
|
---|
1502 | pThis->cVolumesInSet = RT_LE2H_U16(pVolDesc->cVolumesInSet.le);
|
---|
1503 | if ( pThis->cVolumesInSet != RT_BE2H_U16(pVolDesc->cVolumesInSet.be)
|
---|
1504 | || pThis->cVolumesInSet == 0)
|
---|
1505 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume set size: {%#RX16,%#RX16}",
|
---|
1506 | RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le));
|
---|
1507 | if (pThis->cVolumesInSet > 32)
|
---|
1508 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Too large volume set size: %#x\n", pThis->cVolumesInSet);
|
---|
1509 |
|
---|
1510 | /*
|
---|
1511 | * ... primary volume sequence ID ...
|
---|
1512 | */
|
---|
1513 | pThis->idPrimaryVol = RT_LE2H_U16(pVolDesc->VolumeSeqNo.le);
|
---|
1514 | if (pThis->idPrimaryVol != RT_BE2H_U16(pVolDesc->VolumeSeqNo.be))
|
---|
1515 | return RTErrInfoSetF(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume sequence ID: {%#RX16,%#RX16}",
|
---|
1516 | RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le));
|
---|
1517 | if ( pThis->idPrimaryVol > pThis->cVolumesInSet
|
---|
1518 | || pThis->idPrimaryVol < 1)
|
---|
1519 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1520 | "Volume sequence ID out of of bound: %#x (1..%#x)\n", pThis->idPrimaryVol, pThis->cVolumesInSet);
|
---|
1521 |
|
---|
1522 | /*
|
---|
1523 | * ... and the root directory record.
|
---|
1524 | */
|
---|
1525 | *poffRootDirRec = offVolDesc + RT_OFFSETOF(ISO9660PRIMARYVOLDESC, RootDir.DirRec);
|
---|
1526 | return rtFsIso9660VolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo);
|
---|
1527 | }
|
---|
1528 |
|
---|
1529 |
|
---|
1530 | /**
|
---|
1531 | * Deal with a supplementary volume descriptor.
|
---|
1532 | *
|
---|
1533 | * @returns IPRT status code.
|
---|
1534 | * @param pThis The ISO 9660 instance being initialized.
|
---|
1535 | * @param pVolDesc The volume descriptor to handle.
|
---|
1536 | * @param offVolDesc The disk offset of the volume descriptor.
|
---|
1537 | * @param pbUcs2Level Where to return the joliet level, if found. Caller
|
---|
1538 | * initializes this to zero, we'll return 1, 2 or 3 if
|
---|
1539 | * joliet was detected.
|
---|
1540 | * @param pRootDir Where to return the root directory, if found.
|
---|
1541 | * @param poffRootDirRec Where to return the disk offset of the root dir.
|
---|
1542 | * @param pErrInfo Where to return additional error info. Can be NULL.
|
---|
1543 | */
|
---|
1544 | static int rtFsIso9660VolHandleSupplementaryVolDesc(PRTFSISO9660VOL pThis, PCISO9660SUPVOLDESC pVolDesc, uint32_t offVolDesc,
|
---|
1545 | uint8_t *pbUcs2Level, PISO9660DIRREC pRootDir, uint64_t *poffRootDirRec,
|
---|
1546 | PRTERRINFO pErrInfo)
|
---|
1547 | {
|
---|
1548 | if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION)
|
---|
1549 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1550 | "Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion);
|
---|
1551 |
|
---|
1552 | /*
|
---|
1553 | * Is this a joliet volume descriptor? If not, we probably don't need to
|
---|
1554 | * care about it.
|
---|
1555 | */
|
---|
1556 | if ( pVolDesc->abEscapeSequences[0] != ISO9660_JOLIET_ESC_SEQ_0
|
---|
1557 | || pVolDesc->abEscapeSequences[1] != ISO9660_JOLIET_ESC_SEQ_1
|
---|
1558 | || ( pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1
|
---|
1559 | && pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2
|
---|
1560 | && pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_3))
|
---|
1561 | return VINF_SUCCESS;
|
---|
1562 |
|
---|
1563 | /*
|
---|
1564 | * Skip if joliet is unwanted.
|
---|
1565 | */
|
---|
1566 | if (pThis->fFlags & RTFSISO9660_F_NO_JOLIET)
|
---|
1567 | return VINF_SUCCESS;
|
---|
1568 |
|
---|
1569 | /*
|
---|
1570 | * Check that the joliet descriptor matches the primary one.
|
---|
1571 | * Note! These are our assumptions and may be wrong.
|
---|
1572 | */
|
---|
1573 | if (pThis->cbBlock == 0)
|
---|
1574 | return RTErrInfoSet(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1575 | "Supplementary joliet volume descriptor is not supported when appearing before the primary volume descriptor");
|
---|
1576 | if (ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock) != pThis->cbBlock)
|
---|
1577 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1578 | "Logical block size for joliet volume descriptor differs from primary: %#RX16 vs %#RX16\n",
|
---|
1579 | ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock), pThis->cbBlock);
|
---|
1580 | if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize) != pThis->cBlocksInPrimaryVolumeSpace)
|
---|
1581 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1582 | "Volume space size for joliet volume descriptor differs from primary: %#RX32 vs %#RX32\n",
|
---|
1583 | ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize), pThis->cBlocksInPrimaryVolumeSpace);
|
---|
1584 | if (ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet) != pThis->cVolumesInSet)
|
---|
1585 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1586 | "Volume set size for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n",
|
---|
1587 | ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet), pThis->cVolumesInSet);
|
---|
1588 | if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo) != pThis->idPrimaryVol)
|
---|
1589 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1590 | "Volume sequence ID for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n",
|
---|
1591 | ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo), pThis->idPrimaryVol);
|
---|
1592 |
|
---|
1593 | if (*pbUcs2Level != 0)
|
---|
1594 | return RTErrInfoSet(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one supplementary joliet volume descriptor");
|
---|
1595 |
|
---|
1596 | /*
|
---|
1597 | * Switch to the joliet root dir as it has UTF-16 stuff in it.
|
---|
1598 | */
|
---|
1599 | int rc = rtFsIso9660VolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo);
|
---|
1600 | if (RT_SUCCESS(rc))
|
---|
1601 | {
|
---|
1602 | *poffRootDirRec = offVolDesc + RT_OFFSETOF(ISO9660SUPVOLDESC, RootDir.DirRec);
|
---|
1603 | *pbUcs2Level = pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1 ? 1
|
---|
1604 | : pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2 ? 2 : 3;
|
---|
1605 | Log(("ISO9660: Joliet with UCS-2 level %u\n", *pbUcs2Level));
|
---|
1606 | }
|
---|
1607 | return rc;
|
---|
1608 | }
|
---|
1609 |
|
---|
1610 |
|
---|
1611 |
|
---|
1612 | /**
|
---|
1613 | * Worker for RTFsIso9660VolOpen.
|
---|
1614 | *
|
---|
1615 | * @returns IPRT status code.
|
---|
1616 | * @param pThis The FAT VFS instance to initialize.
|
---|
1617 | * @param hVfsSelf The FAT VFS handle (no reference consumed).
|
---|
1618 | * @param hVfsBacking The file backing the alleged FAT file system.
|
---|
1619 | * Reference is consumed (via rtFsIso9660Vol_Destroy).
|
---|
1620 | * @param fFlags Flags, MBZ.
|
---|
1621 | * @param pErrInfo Where to return additional error info. Can be NULL.
|
---|
1622 | */
|
---|
1623 | static int rtFsIso9660VolTryInit(PRTFSISO9660VOL pThis, RTVFS hVfsSelf, RTVFSFILE hVfsBacking, uint32_t fFlags, PRTERRINFO pErrInfo)
|
---|
1624 | {
|
---|
1625 | uint32_t const cbSector = 2048;
|
---|
1626 |
|
---|
1627 | /*
|
---|
1628 | * First initialize the state so that rtFsIso9660Vol_Destroy won't trip up.
|
---|
1629 | */
|
---|
1630 | pThis->hVfsSelf = hVfsSelf;
|
---|
1631 | pThis->hVfsBacking = hVfsBacking; /* Caller referenced it for us, we consume it; rtFsIso9660Vol_Destroy releases it. */
|
---|
1632 | pThis->cbBacking = 0;
|
---|
1633 | pThis->fFlags = fFlags;
|
---|
1634 | pThis->cbSector = cbSector;
|
---|
1635 | pThis->cbBlock = 0;
|
---|
1636 | pThis->cBlocksInPrimaryVolumeSpace = 0;
|
---|
1637 | pThis->cbPrimaryVolumeSpace = 0;
|
---|
1638 | pThis->cVolumesInSet = 0;
|
---|
1639 | pThis->idPrimaryVol = UINT32_MAX;
|
---|
1640 | pThis->fIsUtf16 = false;
|
---|
1641 | pThis->hVfsRootDir = NIL_RTVFSDIR;
|
---|
1642 | pThis->pRootDir = NULL;
|
---|
1643 |
|
---|
1644 | /*
|
---|
1645 | * Get stuff that may fail.
|
---|
1646 | */
|
---|
1647 | int rc = RTVfsFileGetSize(hVfsBacking, &pThis->cbBacking);
|
---|
1648 | if (RT_FAILURE(rc))
|
---|
1649 | return rc;
|
---|
1650 |
|
---|
1651 | /*
|
---|
1652 | * Read the volume descriptors starting at logical sector 16.
|
---|
1653 | */
|
---|
1654 | union
|
---|
1655 | {
|
---|
1656 | uint8_t ab[_4K];
|
---|
1657 | uint16_t au16[_4K / 2];
|
---|
1658 | uint32_t au32[_4K / 4];
|
---|
1659 | ISO9660VOLDESCHDR VolDescHdr;
|
---|
1660 | ISO9660BOOTRECORD BootRecord;
|
---|
1661 | ISO9660PRIMARYVOLDESC PrimaryVolDesc;
|
---|
1662 | ISO9660SUPVOLDESC SupVolDesc;
|
---|
1663 | ISO9660VOLPARTDESC VolPartDesc;
|
---|
1664 | } Buf;
|
---|
1665 | RT_ZERO(Buf);
|
---|
1666 |
|
---|
1667 | uint64_t offRootDirRec = UINT64_MAX;
|
---|
1668 | ISO9660DIRREC RootDir;
|
---|
1669 | RT_ZERO(RootDir);
|
---|
1670 |
|
---|
1671 | uint64_t offJolietRootDirRec = UINT64_MAX;
|
---|
1672 | uint8_t bJolietUcs2Level = 0;
|
---|
1673 | ISO9660DIRREC JolietRootDir;
|
---|
1674 | RT_ZERO(JolietRootDir);
|
---|
1675 |
|
---|
1676 | uint32_t cPrimaryVolDescs = 0;
|
---|
1677 | uint32_t cSupplementaryVolDescs = 0;
|
---|
1678 | uint32_t cBootRecordVolDescs = 0;
|
---|
1679 | uint32_t offVolDesc = 16 * cbSector;
|
---|
1680 | for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector)
|
---|
1681 | {
|
---|
1682 | if (iVolDesc > 32)
|
---|
1683 | return RTErrInfoSet(pErrInfo, rc, "More than 32 volume descriptors, doesn't seem right...");
|
---|
1684 |
|
---|
1685 | /* Read the next one and check the signature. */
|
---|
1686 | rc = RTVfsFileReadAt(hVfsBacking, offVolDesc, &Buf, cbSector, NULL);
|
---|
1687 | if (RT_FAILURE(rc))
|
---|
1688 | return RTErrInfoSetF(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc);
|
---|
1689 |
|
---|
1690 | if ( Buf.VolDescHdr.achStdId[0] != ISO9660VOLDESC_STD_ID_0
|
---|
1691 | || Buf.VolDescHdr.achStdId[1] != ISO9660VOLDESC_STD_ID_1
|
---|
1692 | || Buf.VolDescHdr.achStdId[2] != ISO9660VOLDESC_STD_ID_2
|
---|
1693 | || Buf.VolDescHdr.achStdId[3] != ISO9660VOLDESC_STD_ID_3
|
---|
1694 | || Buf.VolDescHdr.achStdId[4] != ISO9660VOLDESC_STD_ID_4)
|
---|
1695 | {
|
---|
1696 | if (!iVolDesc)
|
---|
1697 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
|
---|
1698 | "No ISO 9660 CD001 signature, instead found: %.5Rhxs", Buf.VolDescHdr.achStdId);
|
---|
1699 | return RTErrInfoSet(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Missing terminator volume descriptor?");
|
---|
1700 | }
|
---|
1701 |
|
---|
1702 | /* Do type specific handling. */
|
---|
1703 | Log(("ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType));
|
---|
1704 | if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY)
|
---|
1705 | {
|
---|
1706 | cPrimaryVolDescs++;
|
---|
1707 | if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION)
|
---|
1708 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1709 | "Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
|
---|
1710 | #ifdef LOG_ENABLED
|
---|
1711 | rtFsIso9660VolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc);
|
---|
1712 | #endif
|
---|
1713 | if (cPrimaryVolDescs > 1)
|
---|
1714 | return RTErrInfoSet(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor");
|
---|
1715 | rc = rtFsIso9660VolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo);
|
---|
1716 | }
|
---|
1717 | else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY)
|
---|
1718 | {
|
---|
1719 | cSupplementaryVolDescs++;
|
---|
1720 | if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION)
|
---|
1721 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1722 | "Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
|
---|
1723 | #ifdef LOG_ENABLED
|
---|
1724 | rtFsIso9660VolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc);
|
---|
1725 | #endif
|
---|
1726 | rc = rtFsIso9660VolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir,
|
---|
1727 | &offJolietRootDirRec, pErrInfo);
|
---|
1728 | }
|
---|
1729 | else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD)
|
---|
1730 | {
|
---|
1731 | cBootRecordVolDescs++;
|
---|
1732 | }
|
---|
1733 | else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR)
|
---|
1734 | {
|
---|
1735 | if (!cPrimaryVolDescs)
|
---|
1736 | return RTErrInfoSet(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor");
|
---|
1737 | break;
|
---|
1738 | }
|
---|
1739 | else
|
---|
1740 | return RTErrInfoSetF(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
|
---|
1741 | "Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType);
|
---|
1742 | if (RT_FAILURE(rc))
|
---|
1743 | return rc;
|
---|
1744 | }
|
---|
1745 |
|
---|
1746 | /*
|
---|
1747 | * We may be faced with choosing between joliet and rock ridge (we won't
|
---|
1748 | * have this choice when RTFSISO9660_F_NO_JOLIET is set). The joliet
|
---|
1749 | * option is generally favorable as we don't have to guess wrt to the file
|
---|
1750 | * name encoding. So, we'll pick that for now.
|
---|
1751 | *
|
---|
1752 | * Note! Should we change this preference for joliet, there fun wrt making sure
|
---|
1753 | * there really is rock ridge stuff in the primary volume as well as
|
---|
1754 | * making sure there really is anything of value in the primary volume.
|
---|
1755 | */
|
---|
1756 | if (bJolietUcs2Level != 0)
|
---|
1757 | {
|
---|
1758 | pThis->fIsUtf16 = true;
|
---|
1759 | return rtFsIso9660Dir_New(pThis, NULL, &JolietRootDir, 1, offJolietRootDirRec, &pThis->hVfsRootDir, &pThis->pRootDir);
|
---|
1760 | }
|
---|
1761 | return rtFsIso9660Dir_New(pThis, NULL, &RootDir, 1, offRootDirRec, &pThis->hVfsRootDir, &pThis->pRootDir);
|
---|
1762 | }
|
---|
1763 |
|
---|
1764 |
|
---|
1765 | /**
|
---|
1766 | * Opens an ISO 9660 file system volume.
|
---|
1767 | *
|
---|
1768 | * @returns IPRT status code.
|
---|
1769 | * @param hVfsFileIn The file or device backing the volume.
|
---|
1770 | * @param fFlags RTFSISO9660_F_XXX.
|
---|
1771 | * @param phVfs Where to return the virtual file system handle.
|
---|
1772 | * @param pErrInfo Where to return additional error information.
|
---|
1773 | */
|
---|
1774 | RTDECL(int) RTFsIso9660VolOpen(RTVFSFILE hVfsFileIn, uint32_t fFlags, PRTVFS phVfs, PRTERRINFO pErrInfo)
|
---|
1775 | {
|
---|
1776 | /*
|
---|
1777 | * Quick input validation.
|
---|
1778 | */
|
---|
1779 | AssertPtrReturn(phVfs, VERR_INVALID_POINTER);
|
---|
1780 | *phVfs = NIL_RTVFS;
|
---|
1781 | AssertReturn(!(fFlags & ~RTFSISO9660_F_VALID_MASK), VERR_INVALID_FLAGS);
|
---|
1782 |
|
---|
1783 | uint32_t cRefs = RTVfsFileRetain(hVfsFileIn);
|
---|
1784 | AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
|
---|
1785 |
|
---|
1786 | /*
|
---|
1787 | * Create a new FAT VFS instance and try initialize it using the given input file.
|
---|
1788 | */
|
---|
1789 | RTVFS hVfs = NIL_RTVFS;
|
---|
1790 | void *pvThis = NULL;
|
---|
1791 | int rc = RTVfsNew(&g_rtFsIso9660VolOps, sizeof(RTFSISO9660VOL), NIL_RTVFS, RTVFSLOCK_CREATE_RW, &hVfs, &pvThis);
|
---|
1792 | if (RT_SUCCESS(rc))
|
---|
1793 | {
|
---|
1794 | rc = rtFsIso9660VolTryInit((PRTFSISO9660VOL)pvThis, hVfs, hVfsFileIn, fFlags, pErrInfo);
|
---|
1795 | if (RT_SUCCESS(rc))
|
---|
1796 | *phVfs = hVfs;
|
---|
1797 | else
|
---|
1798 | RTVfsRelease(hVfs);
|
---|
1799 | }
|
---|
1800 | else
|
---|
1801 | RTVfsFileRelease(hVfsFileIn);
|
---|
1802 | return rc;
|
---|
1803 | }
|
---|
1804 |
|
---|
1805 |
|
---|
1806 | /**
|
---|
1807 | * @interface_method_impl{RTVFSCHAINELEMENTREG,pfnValidate}
|
---|
1808 | */
|
---|
1809 | static DECLCALLBACK(int) rtVfsChainIso9660Vol_Validate(PCRTVFSCHAINELEMENTREG pProviderReg, PRTVFSCHAINSPEC pSpec,
|
---|
1810 | PRTVFSCHAINELEMSPEC pElement, uint32_t *poffError, PRTERRINFO pErrInfo)
|
---|
1811 | {
|
---|
1812 | RT_NOREF(pProviderReg, pSpec);
|
---|
1813 |
|
---|
1814 | /*
|
---|
1815 | * Basic checks.
|
---|
1816 | */
|
---|
1817 | if (pElement->enmTypeIn != RTVFSOBJTYPE_FILE)
|
---|
1818 | return pElement->enmTypeIn == RTVFSOBJTYPE_INVALID ? VERR_VFS_CHAIN_CANNOT_BE_FIRST_ELEMENT : VERR_VFS_CHAIN_TAKES_FILE;
|
---|
1819 | if ( pElement->enmType != RTVFSOBJTYPE_VFS
|
---|
1820 | && pElement->enmType != RTVFSOBJTYPE_DIR)
|
---|
1821 | return VERR_VFS_CHAIN_ONLY_DIR_OR_VFS;
|
---|
1822 | if (pElement->cArgs > 1)
|
---|
1823 | return VERR_VFS_CHAIN_AT_MOST_ONE_ARG;
|
---|
1824 |
|
---|
1825 | /*
|
---|
1826 | * Parse the flag if present, save in pElement->uProvider.
|
---|
1827 | */
|
---|
1828 | uint32_t fFlags = 0;
|
---|
1829 | if (pElement->cArgs > 0)
|
---|
1830 | {
|
---|
1831 | for (uint32_t iArg = 0; iArg < pElement->cArgs; iArg++)
|
---|
1832 | {
|
---|
1833 | const char *psz = pElement->paArgs[iArg].psz;
|
---|
1834 | if (*psz)
|
---|
1835 | {
|
---|
1836 | if (!strcmp(psz, "nojoliet"))
|
---|
1837 | fFlags |= RTFSISO9660_F_NO_JOLIET;
|
---|
1838 | else if (!strcmp(psz, "norock"))
|
---|
1839 | fFlags |= RTFSISO9660_F_NO_ROCK;
|
---|
1840 | else
|
---|
1841 | {
|
---|
1842 | *poffError = pElement->paArgs[iArg].offSpec;
|
---|
1843 | return RTErrInfoSet(pErrInfo, VERR_VFS_CHAIN_INVALID_ARGUMENT, "Only knows: 'nojoliet' and 'norock'");
|
---|
1844 | }
|
---|
1845 | }
|
---|
1846 | }
|
---|
1847 | }
|
---|
1848 |
|
---|
1849 | pElement->uProvider = fFlags;
|
---|
1850 | return VINF_SUCCESS;
|
---|
1851 | }
|
---|
1852 |
|
---|
1853 |
|
---|
1854 | /**
|
---|
1855 | * @interface_method_impl{RTVFSCHAINELEMENTREG,pfnInstantiate}
|
---|
1856 | */
|
---|
1857 | static DECLCALLBACK(int) rtVfsChainIso9660Vol_Instantiate(PCRTVFSCHAINELEMENTREG pProviderReg, PCRTVFSCHAINSPEC pSpec,
|
---|
1858 | PCRTVFSCHAINELEMSPEC pElement, RTVFSOBJ hPrevVfsObj,
|
---|
1859 | PRTVFSOBJ phVfsObj, uint32_t *poffError, PRTERRINFO pErrInfo)
|
---|
1860 | {
|
---|
1861 | RT_NOREF(pProviderReg, pSpec, poffError);
|
---|
1862 |
|
---|
1863 | int rc;
|
---|
1864 | RTVFSFILE hVfsFileIn = RTVfsObjToFile(hPrevVfsObj);
|
---|
1865 | if (hVfsFileIn != NIL_RTVFSFILE)
|
---|
1866 | {
|
---|
1867 | RTVFS hVfs;
|
---|
1868 | rc = RTFsIso9660VolOpen(hVfsFileIn, pElement->uProvider, &hVfs, pErrInfo);
|
---|
1869 | RTVfsFileRelease(hVfsFileIn);
|
---|
1870 | if (RT_SUCCESS(rc))
|
---|
1871 | {
|
---|
1872 | *phVfsObj = RTVfsObjFromVfs(hVfs);
|
---|
1873 | RTVfsRelease(hVfs);
|
---|
1874 | if (*phVfsObj != NIL_RTVFSOBJ)
|
---|
1875 | return VINF_SUCCESS;
|
---|
1876 | rc = VERR_VFS_CHAIN_CAST_FAILED;
|
---|
1877 | }
|
---|
1878 | }
|
---|
1879 | else
|
---|
1880 | rc = VERR_VFS_CHAIN_CAST_FAILED;
|
---|
1881 | return rc;
|
---|
1882 | }
|
---|
1883 |
|
---|
1884 |
|
---|
1885 | /**
|
---|
1886 | * @interface_method_impl{RTVFSCHAINELEMENTREG,pfnCanReuseElement}
|
---|
1887 | */
|
---|
1888 | static DECLCALLBACK(bool) rtVfsChainIso9660Vol_CanReuseElement(PCRTVFSCHAINELEMENTREG pProviderReg,
|
---|
1889 | PCRTVFSCHAINSPEC pSpec, PCRTVFSCHAINELEMSPEC pElement,
|
---|
1890 | PCRTVFSCHAINSPEC pReuseSpec, PCRTVFSCHAINELEMSPEC pReuseElement)
|
---|
1891 | {
|
---|
1892 | RT_NOREF(pProviderReg, pSpec, pReuseSpec);
|
---|
1893 | if ( pElement->paArgs[0].uProvider == pReuseElement->paArgs[0].uProvider
|
---|
1894 | || !pReuseElement->paArgs[0].uProvider)
|
---|
1895 | return true;
|
---|
1896 | return false;
|
---|
1897 | }
|
---|
1898 |
|
---|
1899 |
|
---|
1900 | /** VFS chain element 'file'. */
|
---|
1901 | static RTVFSCHAINELEMENTREG g_rtVfsChainIso9660VolReg =
|
---|
1902 | {
|
---|
1903 | /* uVersion = */ RTVFSCHAINELEMENTREG_VERSION,
|
---|
1904 | /* fReserved = */ 0,
|
---|
1905 | /* pszName = */ "isofs",
|
---|
1906 | /* ListEntry = */ { NULL, NULL },
|
---|
1907 | /* pszHelp = */ "Open a ISO 9660 file system, requires a file object on the left side.\n"
|
---|
1908 | "The 'nojoliet' option make it ignore any joliet supplemental volume.\n"
|
---|
1909 | "The 'norock' option make it ignore any rock ridge info.\n",
|
---|
1910 | /* pfnValidate = */ rtVfsChainIso9660Vol_Validate,
|
---|
1911 | /* pfnInstantiate = */ rtVfsChainIso9660Vol_Instantiate,
|
---|
1912 | /* pfnCanReuseElement = */ rtVfsChainIso9660Vol_CanReuseElement,
|
---|
1913 | /* uEndMarker = */ RTVFSCHAINELEMENTREG_VERSION
|
---|
1914 | };
|
---|
1915 |
|
---|
1916 | RTVFSCHAIN_AUTO_REGISTER_ELEMENT_PROVIDER(&g_rtVfsChainIso9660VolReg, rtVfsChainIso9660VolReg);
|
---|
1917 |
|
---|