1 | /** @file
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2 | *
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3 | * VirtualBox Windows Guest Shared Folders
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4 | *
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5 | * File System Driver system helpers
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6 | */
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7 |
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8 | /*
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9 | * Copyright (C) 2012 Oracle Corporation
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10 | *
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11 | * This file is part of VirtualBox Open Source Edition (OSE), as
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12 | * available from http://www.virtualbox.org. This file is free software;
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13 | * you can redistribute it and/or modify it under the terms of the GNU
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14 | * General Public License (GPL) as published by the Free Software
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15 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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16 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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17 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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18 | */
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19 |
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20 | #include <ntifs.h>
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21 | #include <ntdddisk.h>
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22 |
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23 | #include "vbsfhlp.h"
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24 |
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25 | #ifdef DEBUG
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26 | static int s_iAllocRefCount = 0;
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27 | #endif
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28 |
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29 | void vbsfHlpSleep (ULONG ulMillies)
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30 | {
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31 | KEVENT event;
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32 | LARGE_INTEGER dueTime;
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33 |
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34 | KeInitializeEvent(&event, NotificationEvent, FALSE);
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35 |
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36 | dueTime.QuadPart = -10000 * (int)ulMillies;
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37 |
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38 | KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, &dueTime);
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39 | }
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40 |
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41 | /**
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42 | * Convert VBox IRT file attributes to NT file attributes
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43 | *
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44 | * @returns NT file attributes
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45 | * @param fMode IRT file attributes
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46 | *
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47 | */
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48 | uint32_t VBoxToNTFileAttributes (uint32_t fMode)
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49 | {
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50 | uint32_t FileAttributes = 0;
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51 |
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52 | if (fMode & RTFS_DOS_READONLY)
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53 | FileAttributes |= FILE_ATTRIBUTE_READONLY;
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54 | if (fMode & RTFS_DOS_HIDDEN)
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55 | FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
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56 | if (fMode & RTFS_DOS_SYSTEM)
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57 | FileAttributes |= FILE_ATTRIBUTE_SYSTEM;
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58 | if (fMode & RTFS_DOS_DIRECTORY)
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59 | FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
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60 | if (fMode & RTFS_DOS_ARCHIVED)
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61 | FileAttributes |= FILE_ATTRIBUTE_ARCHIVE;
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62 | if (fMode & RTFS_DOS_NT_TEMPORARY)
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63 | FileAttributes |= FILE_ATTRIBUTE_TEMPORARY;
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64 | if (fMode & RTFS_DOS_NT_SPARSE_FILE)
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65 | FileAttributes |= FILE_ATTRIBUTE_SPARSE_FILE;
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66 | if (fMode & RTFS_DOS_NT_REPARSE_POINT)
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67 | FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
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68 | if (fMode & RTFS_DOS_NT_COMPRESSED)
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69 | FileAttributes |= FILE_ATTRIBUTE_COMPRESSED;
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70 | /* if (fMode & RTFS_DOS_NT_OFFLINE) */
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71 | if (fMode & RTFS_DOS_NT_NOT_CONTENT_INDEXED)
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72 | FileAttributes |= FILE_ATTRIBUTE_NOT_CONTENT_INDEXED;
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73 | if (fMode & RTFS_DOS_NT_ENCRYPTED)
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74 | FileAttributes |= FILE_ATTRIBUTE_ENCRYPTED;
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75 | if (fMode & RTFS_DOS_NT_NORMAL)
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76 | {
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77 | FileAttributes |= FILE_ATTRIBUTE_NORMAL;
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78 | }
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79 | return FileAttributes;
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80 | }
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81 |
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82 | /**
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83 | * Convert VBox IRT file attributes to NT file attributes
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84 | *
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85 | * @returns NT file attributes
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86 | * @param fMode IRT file attributes
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87 | *
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88 | */
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89 | uint32_t NTToVBoxFileAttributes (uint32_t fMode)
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90 | {
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91 | uint32_t FileAttributes = 0;
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92 |
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93 | if (fMode & FILE_ATTRIBUTE_READONLY)
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94 | FileAttributes |= RTFS_DOS_READONLY;
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95 | if (fMode & FILE_ATTRIBUTE_HIDDEN)
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96 | FileAttributes |= RTFS_DOS_HIDDEN;
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97 | if (fMode & FILE_ATTRIBUTE_SYSTEM)
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98 | FileAttributes |= RTFS_DOS_SYSTEM;
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99 | if (fMode & FILE_ATTRIBUTE_DIRECTORY)
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100 | FileAttributes |= RTFS_DOS_DIRECTORY;
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101 | if (fMode & FILE_ATTRIBUTE_ARCHIVE)
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102 | FileAttributes |= RTFS_DOS_ARCHIVED;
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103 | if (fMode & FILE_ATTRIBUTE_TEMPORARY)
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104 | FileAttributes |= RTFS_DOS_NT_TEMPORARY;
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105 | if (fMode & FILE_ATTRIBUTE_SPARSE_FILE)
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106 | FileAttributes |= RTFS_DOS_NT_SPARSE_FILE;
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107 | if (fMode & FILE_ATTRIBUTE_REPARSE_POINT)
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108 | FileAttributes |= RTFS_DOS_NT_REPARSE_POINT;
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109 | if (fMode & FILE_ATTRIBUTE_COMPRESSED)
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110 | FileAttributes |= RTFS_DOS_NT_COMPRESSED;
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111 | if (fMode & FILE_ATTRIBUTE_NOT_CONTENT_INDEXED)
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112 | FileAttributes |= RTFS_DOS_NT_NOT_CONTENT_INDEXED;
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113 | if (fMode & FILE_ATTRIBUTE_ENCRYPTED)
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114 | FileAttributes |= RTFS_DOS_NT_ENCRYPTED;
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115 | if (fMode & FILE_ATTRIBUTE_NORMAL)
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116 | {
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117 | FileAttributes |= RTFS_DOS_NT_NORMAL;
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118 | }
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119 | return FileAttributes;
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120 | }
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121 |
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122 | NTSTATUS vbsfHlpCreateDriveLetter (WCHAR Letter, UNICODE_STRING *pDeviceName)
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123 | {
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124 | UNICODE_STRING driveName;
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125 | RtlInitUnicodeString(&driveName,L"\\??\\_:" );
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126 |
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127 | /* Replace '_' with actual drive letter */
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128 | driveName.Buffer[driveName.Length/sizeof(WCHAR) - 2] = Letter;
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129 |
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130 | return IoCreateSymbolicLink (&driveName, pDeviceName);
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131 | }
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132 |
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133 | NTSTATUS vbsfHlpDeleteDriveLetter (WCHAR Letter)
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134 | {
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135 | UNICODE_STRING driveName;
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136 | RtlInitUnicodeString(&driveName,L"\\??\\_:" );
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137 |
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138 | /* Replace '_' with actual drive letter */
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139 | driveName.Buffer[driveName.Length/sizeof(WCHAR) - 2] = Letter;
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140 |
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141 | return IoDeleteSymbolicLink (&driveName);
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142 | }
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143 |
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144 | /**
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145 | * Convert VBox error code to NT status code
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146 | *
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147 | * @returns NT status code
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148 | * @param vboxRC VBox error code
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149 | *
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150 | */
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151 | NTSTATUS VBoxErrorToNTStatus (int vboxRC)
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152 | {
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153 | NTSTATUS Status;
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154 |
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155 | switch (vboxRC)
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156 | {
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157 | case VINF_SUCCESS:
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158 | Status = STATUS_SUCCESS;
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159 | break;
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160 |
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161 | case VERR_ACCESS_DENIED:
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162 | Status = STATUS_ACCESS_DENIED;
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163 | break;
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164 |
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165 | case VERR_NO_MORE_FILES:
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166 | Status = STATUS_NO_MORE_FILES;
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167 | break;
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168 |
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169 | case VERR_PATH_NOT_FOUND:
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170 | Status = STATUS_OBJECT_PATH_NOT_FOUND;
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171 | break;
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172 |
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173 | case VERR_FILE_NOT_FOUND:
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174 | Status = STATUS_OBJECT_NAME_NOT_FOUND;
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175 | break;
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176 |
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177 | case VERR_DIR_NOT_EMPTY:
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178 | Status = STATUS_DIRECTORY_NOT_EMPTY;
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179 | break;
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180 |
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181 | case VERR_SHARING_VIOLATION:
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182 | Status = STATUS_SHARING_VIOLATION;
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183 | break;
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184 |
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185 | case VERR_FILE_LOCK_VIOLATION:
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186 | Status = STATUS_FILE_LOCK_CONFLICT;
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187 | break;
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188 |
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189 | case VERR_FILE_LOCK_FAILED:
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190 | Status = STATUS_LOCK_NOT_GRANTED;
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191 | break;
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192 |
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193 | case VINF_BUFFER_OVERFLOW:
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194 | Status = STATUS_BUFFER_OVERFLOW;
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195 | break;
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196 |
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197 | case VERR_EOF:
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198 | case VINF_EOF:
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199 | Status = STATUS_END_OF_FILE;
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200 | break;
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201 |
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202 | case VERR_READ_ERROR:
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203 | case VERR_WRITE_ERROR:
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204 | case VERR_FILE_IO_ERROR:
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205 | Status = STATUS_UNEXPECTED_IO_ERROR;
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206 | break;
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207 |
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208 | case VERR_WRITE_PROTECT:
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209 | Status = STATUS_MEDIA_WRITE_PROTECTED;
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210 | break;
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211 |
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212 | case VERR_ALREADY_EXISTS:
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213 | Status = STATUS_OBJECT_NAME_COLLISION;
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214 | break;
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215 |
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216 | case VERR_NOT_A_DIRECTORY:
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217 | Status = STATUS_NOT_A_DIRECTORY;
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218 | break;
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219 |
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220 | case VERR_SEEK:
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221 | Status = STATUS_INVALID_PARAMETER;
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222 | break;
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223 |
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224 | case VERR_INVALID_PARAMETER:
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225 | Status = STATUS_INVALID_PARAMETER;
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226 | break;
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227 |
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228 | case VERR_NOT_SUPPORTED:
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229 | Status = STATUS_NOT_SUPPORTED;
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230 | break;
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231 |
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232 | default:
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233 | /* @todo error handling */
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234 | Status = STATUS_INVALID_PARAMETER;
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235 | Log(("Unexpected vbox error %Rrc\n",
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236 | vboxRC));
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237 | break;
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238 | }
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239 | return Status;
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240 | }
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241 |
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242 | PVOID vbsfAllocNonPagedMem (ULONG ulSize)
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243 | {
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244 | PVOID pMemory = NULL;
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245 |
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246 | #ifdef DEBUG
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247 | s_iAllocRefCount = s_iAllocRefCount + 1;
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248 | Log(("vbsfAllocNonPagedMem: RefCnt after incrementing: %d\n", s_iAllocRefCount));
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249 | #endif
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250 |
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251 | /* Tag is reversed (a.k.a "SHFL") to display correctly in debuggers, so search for "SHFL" */
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252 | pMemory = ExAllocatePoolWithTag(NonPagedPool, ulSize, 'LFHS');
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253 |
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254 | if (NULL != pMemory)
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255 | {
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256 | RtlZeroMemory(pMemory, ulSize);
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257 | #ifdef DEBUG
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258 | Log(("vbsfAllocNonPagedMem: Allocated %d bytes of memory at %p.\n", ulSize, pMemory));
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259 | #endif
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260 | }
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261 | else
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262 | {
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263 | #ifdef DEBUG
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264 | Log(("vbsfAllocNonPagedMem: ERROR: Could not allocate %d bytes of memory!\n", ulSize));
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265 | #endif
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266 | }
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267 |
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268 | return pMemory;
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269 | }
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270 |
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271 | void vbsfFreeNonPagedMem (PVOID lpMem)
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272 | {
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273 | #ifdef DEBUG
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274 | s_iAllocRefCount = s_iAllocRefCount - 1;
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275 | Log(("vbsfFreeNonPagedMem: RefCnt after decrementing: %d\n", s_iAllocRefCount));
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276 | #endif
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277 |
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278 | Assert(lpMem);
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279 |
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280 | /* MSDN: The ExFreePoolWithTag routine issues a bug check if the specified value for Tag does not match the tag value passed
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281 | to the routine that originally allocated the memory block. Otherwise, the behavior of this routine is identical to ExFreePool. */
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282 | ExFreePoolWithTag(lpMem, 'LFHS');
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283 | lpMem = NULL;
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284 | }
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285 |
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286 | #if 0 //def DEBUG
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287 | /**
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288 | * Callback for RTLogFormatV which writes to the backdoor.
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289 | * See PFNLOGOUTPUT() for details.
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290 | */
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291 | static DECLCALLBACK(size_t) rtLogBackdoorOutput(void *pv, const char *pachChars, size_t cbChars)
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292 | {
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293 | RTLogWriteUser(pachChars, cbChars);
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294 | return cbChars;
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295 | }
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296 |
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297 | int RTLogBackdoorPrintf1(const char *pszFormat, ...)
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298 | {
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299 | va_list args;
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300 |
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301 | LARGE_INTEGER time;
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302 |
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303 | KeQueryTickCount(&time);
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304 |
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305 | RTLogBackdoorPrintf("T=%RX64 ", time.QuadPart);
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306 | va_start(args, pszFormat);
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307 | RTLogFormatV(rtLogBackdoorOutput, NULL, pszFormat, args);
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308 | va_end(args);
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309 |
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310 | return 0;
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311 | }
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312 | #endif
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313 |
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314 | #if defined(DEBUG) || defined (LOG_ENABLED)
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315 | static PCHAR PnPMinorFunctionString(LONG MinorFunction)
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316 | {
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317 | switch (MinorFunction)
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318 | {
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319 | case IRP_MN_START_DEVICE:
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320 | return "IRP_MJ_PNP - IRP_MN_START_DEVICE";
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321 | case IRP_MN_QUERY_REMOVE_DEVICE:
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322 | return "IRP_MJ_PNP - IRP_MN_QUERY_REMOVE_DEVICE";
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323 | case IRP_MN_REMOVE_DEVICE:
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324 | return "IRP_MJ_PNP - IRP_MN_REMOVE_DEVICE";
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325 | case IRP_MN_CANCEL_REMOVE_DEVICE:
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326 | return "IRP_MJ_PNP - IRP_MN_CANCEL_REMOVE_DEVICE";
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327 | case IRP_MN_STOP_DEVICE:
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328 | return "IRP_MJ_PNP - IRP_MN_STOP_DEVICE";
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329 | case IRP_MN_QUERY_STOP_DEVICE:
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330 | return "IRP_MJ_PNP - IRP_MN_QUERY_STOP_DEVICE";
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331 | case IRP_MN_CANCEL_STOP_DEVICE:
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332 | return "IRP_MJ_PNP - IRP_MN_CANCEL_STOP_DEVICE";
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333 | case IRP_MN_QUERY_DEVICE_RELATIONS:
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334 | return "IRP_MJ_PNP - IRP_MN_QUERY_DEVICE_RELATIONS";
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335 | case IRP_MN_QUERY_INTERFACE:
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336 | return "IRP_MJ_PNP - IRP_MN_QUERY_INTERFACE";
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337 | case IRP_MN_QUERY_CAPABILITIES:
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338 | return "IRP_MJ_PNP - IRP_MN_QUERY_CAPABILITIES";
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339 | case IRP_MN_QUERY_RESOURCES:
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340 | return "IRP_MJ_PNP - IRP_MN_QUERY_RESOURCES";
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341 | case IRP_MN_QUERY_RESOURCE_REQUIREMENTS:
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342 | return "IRP_MJ_PNP - IRP_MN_QUERY_RESOURCE_REQUIREMENTS";
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343 | case IRP_MN_QUERY_DEVICE_TEXT:
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344 | return "IRP_MJ_PNP - IRP_MN_QUERY_DEVICE_TEXT";
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345 | case IRP_MN_FILTER_RESOURCE_REQUIREMENTS:
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346 | return "IRP_MJ_PNP - IRP_MN_FILTER_RESOURCE_REQUIREMENTS";
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347 | case IRP_MN_READ_CONFIG:
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348 | return "IRP_MJ_PNP - IRP_MN_READ_CONFIG";
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349 | case IRP_MN_WRITE_CONFIG:
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350 | return "IRP_MJ_PNP - IRP_MN_WRITE_CONFIG";
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351 | case IRP_MN_EJECT:
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352 | return "IRP_MJ_PNP - IRP_MN_EJECT";
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353 | case IRP_MN_SET_LOCK:
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354 | return "IRP_MJ_PNP - IRP_MN_SET_LOCK";
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355 | case IRP_MN_QUERY_ID:
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356 | return "IRP_MJ_PNP - IRP_MN_QUERY_ID";
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357 | case IRP_MN_QUERY_PNP_DEVICE_STATE:
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358 | return "IRP_MJ_PNP - IRP_MN_QUERY_PNP_DEVICE_STATE";
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359 | case IRP_MN_QUERY_BUS_INFORMATION:
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360 | return "IRP_MJ_PNP - IRP_MN_QUERY_BUS_INFORMATION";
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361 | case IRP_MN_DEVICE_USAGE_NOTIFICATION:
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362 | return "IRP_MJ_PNP - IRP_MN_DEVICE_USAGE_NOTIFICATION";
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363 | case IRP_MN_SURPRISE_REMOVAL:
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364 | return "IRP_MJ_PNP - IRP_MN_SURPRISE_REMOVAL";
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365 | default:
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366 | return "IRP_MJ_PNP - unknown_pnp_irp";
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367 | }
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368 | }
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369 |
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370 | PCHAR MajorFunctionString(UCHAR MajorFunction, LONG MinorFunction)
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371 | {
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372 | switch (MinorFunction)
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373 | {
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374 | case IRP_MJ_CREATE:
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375 | return "IRP_MJ_CREATE";
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376 | case IRP_MJ_CREATE_NAMED_PIPE:
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377 | return "IRP_MJ_CREATE_NAMED_PIPE";
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378 | case IRP_MJ_CLOSE:
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379 | return "IRP_MJ_CLOSE";
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380 | case IRP_MJ_READ:
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381 | return "IRP_MJ_READ";
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382 | case IRP_MJ_WRITE:
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383 | return "IRP_MJ_WRITE";
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384 | case IRP_MJ_QUERY_INFORMATION:
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385 | return "IRP_MJ_QUERY_INFORMATION";
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386 | case IRP_MJ_SET_INFORMATION:
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387 | return "IRP_MJ_SET_INFORMATION";
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388 | case IRP_MJ_QUERY_EA:
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389 | return "IRP_MJ_QUERY_EA";
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390 | case IRP_MJ_SET_EA:
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391 | return "IRP_MJ_SET_EA";
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392 | case IRP_MJ_FLUSH_BUFFERS:
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393 | return "IRP_MJ_FLUSH_BUFFERS";
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394 | case IRP_MJ_QUERY_VOLUME_INFORMATION:
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395 | return "IRP_MJ_QUERY_VOLUME_INFORMATION";
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396 | case IRP_MJ_SET_VOLUME_INFORMATION:
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397 | return "IRP_MJ_SET_VOLUME_INFORMATION";
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398 | case IRP_MJ_DIRECTORY_CONTROL:
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399 | return "IRP_MJ_DIRECTORY_CONTROL";
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400 | case IRP_MJ_FILE_SYSTEM_CONTROL:
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401 | return "IRP_MJ_FILE_SYSTEM_CONTROL";
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402 | case IRP_MJ_DEVICE_CONTROL:
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403 | return "IRP_MJ_DEVICE_CONTROL";
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404 | case IRP_MJ_INTERNAL_DEVICE_CONTROL:
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405 | return "IRP_MJ_INTERNAL_DEVICE_CONTROL";
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406 | case IRP_MJ_SHUTDOWN:
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407 | return "IRP_MJ_SHUTDOWN";
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408 | case IRP_MJ_LOCK_CONTROL:
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409 | return "IRP_MJ_LOCK_CONTROL";
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410 | case IRP_MJ_CLEANUP:
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411 | return "IRP_MJ_CLEANUP";
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412 | case IRP_MJ_CREATE_MAILSLOT:
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413 | return "IRP_MJ_CREATE_MAILSLOT";
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414 | case IRP_MJ_QUERY_SECURITY:
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415 | return "IRP_MJ_QUERY_SECURITY";
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416 | case IRP_MJ_SET_SECURITY:
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417 | return "IRP_MJ_SET_SECURITY";
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418 | case IRP_MJ_POWER:
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419 | return "IRP_MJ_POWER";
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420 | case IRP_MJ_SYSTEM_CONTROL:
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421 | return "IRP_MJ_SYSTEM_CONTROL";
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422 | case IRP_MJ_DEVICE_CHANGE:
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423 | return "IRP_MJ_DEVICE_CHANGE";
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424 | case IRP_MJ_QUERY_QUOTA:
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425 | return "IRP_MJ_QUERY_QUOTA";
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426 | case IRP_MJ_SET_QUOTA:
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427 | return "IRP_MJ_SET_QUOTA";
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428 | case IRP_MJ_PNP:
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429 | return PnPMinorFunctionString(MinorFunction);
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430 |
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431 | default:
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432 | return "unknown_pnp_irp";
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433 | }
|
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434 | }
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435 | #endif
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