1 | /* $Id: fs-nt.cpp 57613 2015-09-04 02:19:44Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - File System, Native NT.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2015 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-r3-nt.h"
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33 |
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34 | #include <iprt/fs.h>
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35 | #include <iprt/path.h>
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36 | #include <iprt/string.h>
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37 | #include <iprt/param.h>
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38 | #include <iprt/err.h>
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39 | #include <iprt/log.h>
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40 | #include <iprt/assert.h>
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41 | #include "internal/fs.h"
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42 |
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43 |
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44 |
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45 |
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46 | RTR3DECL(int) RTFsQuerySizes(const char *pszFsPath, RTFOFF *pcbTotal, RTFOFF *pcbFree,
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47 | uint32_t *pcbBlock, uint32_t *pcbSector)
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48 | {
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49 | AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
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50 |
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51 | /*
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52 | * Open the file/dir/whatever.
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53 | */
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54 | HANDLE hFile;
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55 | int rc = RTNtPathOpen(pszFsPath,
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56 | GENERIC_READ,
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57 | FILE_ATTRIBUTE_NORMAL,
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58 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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59 | FILE_OPEN,
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60 | FILE_OPEN_FOR_BACKUP_INTENT,
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61 | OBJ_CASE_INSENSITIVE,
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62 | &hFile,
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63 | NULL);
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64 | if (RT_SUCCESS(rc))
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65 | {
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66 | /*
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67 | * Get the volume information.
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68 | */
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69 | FILE_FS_SIZE_INFORMATION FsSizeInfo;
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70 | IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
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71 | NTSTATUS rcNt = NtQueryVolumeInformationFile(hFile, &Ios, &FsSizeInfo, sizeof(FsSizeInfo), FileFsSizeInformation);
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72 | if (NT_SUCCESS(rcNt))
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73 | {
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74 | /*
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75 | * Calculate the return values.
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76 | */
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77 | if (pcbTotal)
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78 | {
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79 | *pcbTotal = FsSizeInfo.TotalAllocationUnits.QuadPart
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80 | * FsSizeInfo.SectorsPerAllocationUnit
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81 | * FsSizeInfo.BytesPerSector;
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82 | if ( *pcbTotal / FsSizeInfo.SectorsPerAllocationUnit / FsSizeInfo.BytesPerSector
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83 | != FsSizeInfo.TotalAllocationUnits.QuadPart)
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84 | *pcbTotal = UINT64_MAX;
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85 | }
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86 |
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87 | if (pcbFree)
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88 | {
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89 | *pcbFree = FsSizeInfo.AvailableAllocationUnits.QuadPart
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90 | * FsSizeInfo.SectorsPerAllocationUnit
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91 | * FsSizeInfo.BytesPerSector;
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92 | if ( *pcbFree / FsSizeInfo.SectorsPerAllocationUnit / FsSizeInfo.BytesPerSector
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93 | != FsSizeInfo.AvailableAllocationUnits.QuadPart)
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94 | *pcbFree = UINT64_MAX;
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95 | }
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96 |
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97 | if (pcbBlock)
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98 | {
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99 | *pcbBlock = FsSizeInfo.SectorsPerAllocationUnit * FsSizeInfo.BytesPerSector;
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100 | if (*pcbBlock / FsSizeInfo.BytesPerSector != FsSizeInfo.SectorsPerAllocationUnit)
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101 | rc = VERR_OUT_OF_RANGE;
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102 | }
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103 |
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104 | if (pcbSector)
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105 | *pcbSector = FsSizeInfo.BytesPerSector;
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106 | }
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107 | else
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108 | rc = RTErrConvertFromNtStatus(rcNt);
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109 |
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110 | RTNtPathClose(hFile);
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111 | }
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112 | return rc;
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113 | }
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114 |
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115 |
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116 | RTR3DECL(int) RTFsQuerySerial(const char *pszFsPath, uint32_t *pu32Serial)
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117 | {
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118 | /*
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119 | * Validate & get valid root path.
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120 | */
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121 | AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
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122 | AssertPtrReturn(pu32Serial, VERR_INVALID_POINTER);
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123 |
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124 | /*
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125 | * Open the file/dir/whatever.
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126 | */
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127 | HANDLE hFile;
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128 | int rc = RTNtPathOpen(pszFsPath,
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129 | GENERIC_READ,
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130 | FILE_ATTRIBUTE_NORMAL,
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131 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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132 | FILE_OPEN,
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133 | FILE_OPEN_FOR_BACKUP_INTENT,
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134 | OBJ_CASE_INSENSITIVE,
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135 | &hFile,
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136 | NULL);
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137 | if (RT_SUCCESS(rc))
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138 | {
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139 | /*
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140 | * Get the volume information.
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141 | */
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142 | union
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143 | {
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144 | FILE_FS_VOLUME_INFORMATION FsVolInfo;
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145 | uint8_t abBuf[sizeof(FILE_FS_VOLUME_INFORMATION) + 4096];
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146 | } u;
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147 | IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
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148 | NTSTATUS rcNt = NtQueryVolumeInformationFile(hFile, &Ios, &u, sizeof(u), FileFsVolumeInformation);
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149 | if (NT_SUCCESS(rcNt))
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150 | *pu32Serial = u.FsVolInfo.VolumeSerialNumber;
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151 | else
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152 | rc = RTErrConvertFromNtStatus(rcNt);
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153 |
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154 | RTNtPathClose(hFile);
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155 | }
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156 | return rc;
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157 | }
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158 |
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159 |
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160 | RTR3DECL(int) RTFsQueryProperties(const char *pszFsPath, PRTFSPROPERTIES pProperties)
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161 | {
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162 | /*
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163 | * Validate & get valid root path.
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164 | */
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165 | AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
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166 | AssertPtrReturn(pProperties, VERR_INVALID_POINTER);
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167 |
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168 | /*
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169 | * Open the file/dir/whatever.
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170 | */
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171 | HANDLE hFile;
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172 | int rc = RTNtPathOpen(pszFsPath,
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173 | GENERIC_READ,
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174 | FILE_ATTRIBUTE_NORMAL,
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175 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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176 | FILE_OPEN,
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177 | FILE_OPEN_FOR_BACKUP_INTENT,
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178 | OBJ_CASE_INSENSITIVE,
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179 | &hFile,
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180 | NULL);
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181 | if (RT_SUCCESS(rc))
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182 | {
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183 | /*
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184 | * Get the volume information.
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185 | */
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186 | union
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187 | {
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188 | FILE_FS_ATTRIBUTE_INFORMATION FsAttrInfo;
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189 | uint8_t abBuf[sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 4096];
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190 | } u;
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191 | IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
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192 | NTSTATUS rcNt = NtQueryVolumeInformationFile(hFile, &Ios, &u, sizeof(u), FileFsAttributeInformation);
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193 | if (NT_SUCCESS(rcNt))
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194 | {
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195 | FILE_FS_DEVICE_INFORMATION FsDevInfo;
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196 | rcNt = NtQueryVolumeInformationFile(hFile, &Ios, &FsDevInfo, sizeof(FsDevInfo), FileFsDeviceInformation);
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197 | if (NT_SUCCESS(rcNt))
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198 | {
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199 | /*
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200 | * Fill in the return structure.
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201 | */
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202 | memset(pProperties, 0, sizeof(*pProperties));
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203 | pProperties->cbMaxComponent = u.FsAttrInfo.MaximumComponentNameLength;
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204 | pProperties->fFileCompression = !!(u.FsAttrInfo.FileSystemAttributes & FILE_FILE_COMPRESSION);
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205 | pProperties->fCompressed = !!(u.FsAttrInfo.FileSystemAttributes & FILE_VOLUME_IS_COMPRESSED);
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206 | pProperties->fReadOnly = !!(u.FsAttrInfo.FileSystemAttributes & FILE_READ_ONLY_VOLUME);
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207 | pProperties->fSupportsUnicode = !!(u.FsAttrInfo.FileSystemAttributes & FILE_UNICODE_ON_DISK);
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208 | pProperties->fCaseSensitive = false; /* win32 is case preserving only */
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209 | /** @todo r=bird: What about FILE_CASE_SENSITIVE_SEARCH ? Is this set for NTFS
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210 | * as well perchance? If so, better mention it instead of just setting
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211 | * fCaseSensitive to false. */
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212 |
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213 | /* figure the remote stuff */
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214 | pProperties->fRemote = RT_BOOL(FsDevInfo.Characteristics & FILE_REMOTE_DEVICE);
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215 | }
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216 | else
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217 | rc = RTErrConvertFromNtStatus(rcNt);
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218 | }
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219 | else
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220 | rc = RTErrConvertFromNtStatus(rcNt);
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221 |
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222 | RTNtPathClose(hFile);
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223 | }
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224 | return rc;
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225 | }
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226 |
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227 |
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228 | RTR3DECL(bool) RTFsIsCaseSensitive(const char *pszFsPath)
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229 | {
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230 | return false;
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231 | }
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232 |
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233 |
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234 | RTR3DECL(int) RTFsQueryType(const char *pszFsPath, PRTFSTYPE penmType)
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235 | {
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236 | /*
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237 | * Validate input.
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238 | */
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239 | *penmType = RTFSTYPE_UNKNOWN;
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240 | AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
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241 | AssertReturn(*pszFsPath, VERR_INVALID_PARAMETER);
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242 |
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243 | /*
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244 | * Open the file/dir/whatever.
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245 | */
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246 | HANDLE hFile;
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247 | int rc = RTNtPathOpen(pszFsPath,
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248 | GENERIC_READ,
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249 | FILE_ATTRIBUTE_NORMAL,
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250 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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251 | FILE_OPEN,
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252 | FILE_OPEN_FOR_BACKUP_INTENT,
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253 | OBJ_CASE_INSENSITIVE,
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254 | &hFile,
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255 | NULL);
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256 | if (RT_SUCCESS(rc))
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257 | {
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258 | /*
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259 | * Get the file system name.
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260 | */
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261 | union
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262 | {
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263 | FILE_FS_ATTRIBUTE_INFORMATION FsAttrInfo;
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264 | uint8_t abBuf[sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 4096];
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265 | } u;
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266 | IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
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267 | NTSTATUS rcNt = NtQueryVolumeInformationFile(hFile, &Ios, &u, sizeof(u), FileFsAttributeInformation);
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268 | if (NT_SUCCESS(rcNt))
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269 | {
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270 | #define IS_FS(a_szName) \
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271 | rtNtCompWideStrAndAscii(u.FsAttrInfo.FileSystemName, u.FsAttrInfo.FileSystemNameLength, RT_STR_TUPLE(a_szName))
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272 | if (IS_FS("NTFS"))
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273 | *penmType = RTFSTYPE_NTFS;
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274 | else if (IS_FS("FAT"))
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275 | *penmType = RTFSTYPE_FAT;
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276 | else if (IS_FS("FAT32"))
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277 | *penmType = RTFSTYPE_FAT;
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278 | else if (IS_FS("VBoxSharedFolderFS"))
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279 | *penmType = RTFSTYPE_VBOXSHF;
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280 | #undef IS_FS
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281 | }
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282 | else
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283 | rc = RTErrConvertFromNtStatus(rcNt);
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284 |
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285 | RTNtPathClose(hFile);
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286 | }
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287 | return rc;
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288 | }
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289 |
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