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1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 |
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15 /** |
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16 @file |
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17 @internalTechnology |
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18 */ |
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19 |
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20 #include <e32cmn.h> |
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21 #include <f32ver.h> |
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22 #include <u32std.h> |
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23 #include <f32file.h> |
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24 |
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25 |
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26 |
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27 #include "filesystem_automounter.h" |
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28 #include "automounter.h" |
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29 |
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30 |
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31 //----------------------------------------------------------------------------- |
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32 |
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33 void Fault(TFault aFault) |
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34 { |
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35 _LIT(KPanicName, "AutoMounter_fsy"); |
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36 User::Panic(KPanicName, aFault); |
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37 } |
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38 |
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39 |
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40 //----------------------------------------------------------------------------- |
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41 |
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42 /** |
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43 Factory function, Create a new object of this file system |
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44 */ |
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45 extern "C" |
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46 { |
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47 EXPORT_C CFileSystem* CreateFileSystem() |
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48 { |
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49 return CAutoMounterFileSystem::New(); |
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50 } |
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51 } |
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52 |
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53 |
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54 //####################################################################################################################################### |
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55 //# CAutoMounterFileSystem class implementation |
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56 //####################################################################################################################################### |
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57 |
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58 /** |
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59 Factory method |
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60 */ |
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61 CAutoMounterFileSystem* CAutoMounterFileSystem::New() |
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62 { |
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63 CAutoMounterFileSystem* pThis = new CAutoMounterFileSystem(); |
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64 return pThis; |
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65 } |
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66 |
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67 |
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68 CAutoMounterFileSystem::CAutoMounterFileSystem() |
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69 { |
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70 __PRINT1(_L("#<<- CAutoMounterFileSystem::CAutoMounterFileSystem() [0x%x]"), this); |
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71 |
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72 SetState(EInvalid); |
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73 } |
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74 |
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75 CAutoMounterFileSystem::~CAutoMounterFileSystem() |
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76 { |
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77 __PRINT1(_L("#<<- CAutoMounterFileSystem::~CAutoMounterFileSystem() [0x%x]"), this); |
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78 } |
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79 |
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80 //----------------------------------------------------------------------------- |
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81 |
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82 /** |
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83 Install iand initialise file system. |
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84 */ |
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85 TInt CAutoMounterFileSystem::Install() |
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86 { |
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87 |
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88 SetState(ENotInitialised); |
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89 |
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90 __PRINT1(_L("#<<- CAutoMounterFileSystem::Install() [0x%x]"), this); |
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91 |
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92 iVersion=TVersion(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber); |
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93 |
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94 InitialiseFileSystem(); |
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95 |
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96 return SetName(&KFileSystemName_AutoMounter); |
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97 } |
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98 |
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99 |
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100 //----------------------------------------------------------------------------- |
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101 /** |
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102 Create a new mount control block. |
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103 This method migh be called by the file server in some unusual cases, when the actual mount is needed only temporarily to get access to the |
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104 corresponding media driver. E.g. TDrive::ForceRemountDrive() |
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105 Produce the _default_ file system mount |
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106 */ |
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107 CMountCB* CAutoMounterFileSystem::NewMountL() const |
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108 { |
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109 __PRINT1(_L("#<<- CAutoMounterFileSystem::NewMountL() [0x%x]"), this); |
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110 ASSERT(State() == EInitialised); |
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111 |
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112 __PRINT1(_L("#<<- producing the _default_ filesystem:%S"), &iFSNames[KDefaultFSNo]); |
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113 |
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114 CFileSystem* pFS = GetChildFileSystem(KDefaultFSNo); |
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115 ASSERT(pFS); |
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116 |
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117 return pFS->NewMountL(); |
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118 } |
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119 |
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120 //----------------------------------------------------------------------------- |
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121 /** |
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122 Create a new file. |
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123 */ |
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124 CFileCB* CAutoMounterFileSystem::NewFileL() const |
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125 { |
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126 __PRINT1(_L("#<<- CAutoMounterFileSystem::NewFileL() [0x%x]"), this); |
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127 Fault(EMustNotBeCalled); |
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128 return NULL; |
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129 } |
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130 |
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131 //----------------------------------------------------------------------------- |
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132 /** |
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133 Create a new directory object |
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134 */ |
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135 CDirCB* CAutoMounterFileSystem::NewDirL() const |
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136 { |
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137 __PRINT1(_L("#<<- CAutoMounterFileSystem::NewDirL() [0x%x]"), this); |
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138 Fault(EMustNotBeCalled); |
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139 return NULL; |
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140 } |
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141 |
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142 //----------------------------------------------------------------------------- |
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143 /** |
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144 Create a new media formatter |
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145 */ |
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146 CFormatCB* CAutoMounterFileSystem::NewFormatL() const |
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147 { |
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148 __PRINT1(_L("#<<- CAutoMounterFileSystem::NewFormatL() [0x%x]"), this); |
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149 Fault(EMustNotBeCalled); |
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150 return NULL; |
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151 } |
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152 |
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153 //----------------------------------------------------------------------------- |
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154 /** |
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155 Return the drive info |
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156 */ |
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157 void CAutoMounterFileSystem::DriveInfo(TDriveInfo& anInfo,TInt aDriveNumber) const |
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158 { |
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159 //!!!!!!!!!!!! This method shall be made the same as FAT, exFAT etc. |
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160 //!! General idea: make all this code common for all filesystems and put it into the file server |
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161 //!! The problem: need to have another exported method. Actually, the generic code can be placed to CFileSystem::DriveInfo() |
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162 //!! despite it a pure virtual. |
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163 |
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164 __PRINT1(_L("#<<- CAutoMounterFileSystem::DriveInfo() [0x%x]"), this); |
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165 |
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166 if(!IsValidLocalDriveMapping(aDriveNumber)) |
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167 return; |
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168 |
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169 TLocalDriveCapsV2Buf localDriveCaps; |
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170 |
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171 TInt r = KErrNone; |
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172 |
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173 // is the drive local? |
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174 if (!IsProxyDrive(aDriveNumber)) |
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175 { |
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176 // if not valid local drive, use default values in localDriveCaps |
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177 // if valid local drive and not locked, use TBusLocalDrive::Caps() values |
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178 // if valid drive and locked, hard-code attributes |
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179 r = GetLocalDrive(aDriveNumber).Caps(localDriveCaps); |
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180 } |
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181 else // this need to be made a bit nicer |
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182 { |
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183 CExtProxyDrive* pD = GetProxyDrive(aDriveNumber); |
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184 if(pD) |
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185 r = pD->Caps(localDriveCaps); |
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186 else |
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187 r = KErrNotReady; // What should the behaviour really be here? |
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188 } |
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189 |
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190 if (r != KErrLocked ) |
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191 { |
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192 anInfo.iMediaAtt=localDriveCaps().iMediaAtt; |
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193 } |
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194 else |
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195 { |
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196 anInfo.iMediaAtt = KMediaAttLocked | KMediaAttLockable | KMediaAttHasPassword; |
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197 } |
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198 |
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199 anInfo.iType=localDriveCaps().iType; |
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200 anInfo.iDriveAtt=localDriveCaps().iDriveAtt; |
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201 } |
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202 |
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203 //----------------------------------------------------------------------------- |
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204 |
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205 #ifdef _DEBUG |
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206 /** |
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207 Called by File Server before deleting File System object. |
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208 */ |
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209 TInt CAutoMounterFileSystem::Remove() |
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210 { |
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211 __PRINT1(_L("#<<- CAutoMounterFileSystem::Remove() [0x%x]"), this); |
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212 return CFileSystem::Remove(); |
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213 } |
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214 |
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215 //----------------------------------------------------------------------------- |
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216 |
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217 /** |
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218 */ |
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219 TBool CAutoMounterFileSystem::QueryVersionSupported(const TVersion& aVer) const |
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220 { |
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221 __PRINT1(_L("#<<- CAutoMounterFileSystem::QueryVersionSupported() [0x%x]"), this); |
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222 return CFileSystem::QueryVersionSupported(aVer); |
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223 } |
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224 |
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225 #endif |
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226 |
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227 //----------------------------------------------------------------------------- |
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228 |
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229 /** |
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230 Find out if drive extensions are supported. In order to have consistent behaviour, _all_ child |
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231 file systems shall behave the same way. |
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232 |
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233 @return ETrue if drive extensions are supported. |
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234 */ |
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235 TBool CAutoMounterFileSystem::IsExtensionSupported() const |
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236 { |
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237 __PRINT1(_L("#<<- CAutoMounterFileSystem::IsExtensionSupported() [0x%x]"), this); |
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238 |
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239 ASSERT(State() == EInitialised && iFSNames.Count() > 1); |
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240 |
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241 |
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242 //-- in debug mode check file systems compatibility: ALL childs must support this feature |
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243 for(TUint i=0; i<iFSNames.Count(); ++i) |
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244 { |
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245 if( !(GetChildFileSystem(i)->IsExtensionSupported())) |
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246 { |
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247 DBG_STATEMENT(Fault(EIncompatibleFileSystems)); |
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248 __PRINT(_L("#<<- ::IsExtensionSupported(): Incompatible file sytems!")); |
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249 return EFalse; |
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250 } |
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251 } |
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252 |
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253 |
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254 return ETrue; |
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255 } |
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256 |
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257 //----------------------------------------------------------------------------- |
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258 |
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259 /** |
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260 Return the initial default path. |
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261 */ |
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262 TInt CAutoMounterFileSystem::DefaultPath(TDes& aPath) const |
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263 { |
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264 __PRINT1(_L("#<<- CAutoMounterFileSystem::DefaultPath() [0x%x]"), this); |
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265 |
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266 aPath=_L("?:\\"); |
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267 aPath[0] = (TUint8) RFs::GetSystemDriveChar(); |
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268 return KErrNone; |
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269 } |
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270 |
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271 |
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272 //----------------------------------------------------------------------------- |
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273 |
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274 /** |
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275 Additional interfaces support. |
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276 */ |
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277 TInt CAutoMounterFileSystem::GetInterface(TInt aInterfaceId, TAny*& aInterface, TAny* aInput) |
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278 { |
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279 |
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280 __PRINT2(_L("#<<- CAutoMounterFileSystem::GetInterface(id:%d) [0x%x]"), aInterfaceId, this); |
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281 |
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282 switch(aInterfaceId) |
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283 { |
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284 //-- It is this filesystem private interface. |
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285 case EExtendedFunctionality: |
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286 aInterface = (CFileSystem::MFileSystemExtInterface*)this; |
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287 return KErrNone; |
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288 |
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289 //-- a special case for child filesystems. |
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290 //-- ALL of them must respond to this interface query exactly the same way. I.e. It is impossible |
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291 //-- to have some of the child FS supporting it and some not. |
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292 case EProxyDriveSupport: |
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293 return DoProcessProxyDriveSupport(); |
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294 |
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295 |
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296 default: |
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297 //-- This is the request to other (child file system) from the file server |
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298 //-- Actually, this part must never be called. File Server shall query the file system interfaces _after_ mounting the concrete FS |
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299 //-- calling TDrive::iCurrentMount->FileSystem().GetInterface() |
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300 ASSERT(0); |
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301 return CFileSystem::GetInterface(aInterfaceId, aInterface, aInput); |
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302 |
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303 } |
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304 } |
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305 |
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306 //----------------------------------------------------------------------------- |
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307 /** |
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308 @return Boolean exclusive OR between a1 and a2 |
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309 */ |
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310 TBool BoolXOR(TBool a1, TBool a2) |
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311 { |
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312 if(!a1 && !a2) |
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313 return EFalse; |
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314 else if(a1 && a2) |
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315 return EFalse; |
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316 else |
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317 return ETrue; |
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318 } |
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319 |
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320 //----------------------------------------------------------------------------- |
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321 |
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322 /** |
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323 Find out if _all_ child file systems support the proxy drive. All childs shall behave exactly the same way. |
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324 @return KErrNone if all child file systems support proxy drives, or KErrNotSupported if all of them do not. |
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325 */ |
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326 TInt CAutoMounterFileSystem::DoProcessProxyDriveSupport() |
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327 { |
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328 __PRINT1(_L("#<<- CAutoMounterFileSystem::DoProcessProxyDriveSupport[0x%x]"), this); |
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329 ASSERT(State() == EInitialised); |
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330 |
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331 const TUint cnt = iFSNames.Count(); |
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332 ASSERT(cnt > 1); |
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333 |
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334 |
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335 //-- query the default filesystem #0 |
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336 const TBool bRes = GetChildFileSystem(KDefaultFSNo)->IsProxyDriveSupported(); |
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337 |
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338 //-- query the rest of child filesystems |
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339 for(TUint i=1; i<cnt; ++i) |
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340 { |
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341 const TBool b = GetChildFileSystem(i)->IsProxyDriveSupported(); |
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342 |
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343 if(BoolXOR(b, bRes)) |
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344 Fault(EIncompatibleFileSystems); |
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345 } |
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346 |
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347 |
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348 return bRes ? KErrNone : KErrNotSupported; |
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349 } |
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350 |
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351 //----------------------------------------------------------------------------- |
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352 /** |
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353 Get the child file system name by its index (enumerator). |
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354 |
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355 @param aFsNumber index of the child FS 0...KMaxTInt |
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356 @param aFsName on success the child file system name will be placed into this buffer |
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357 |
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358 @return KErrNone if there is a child FS name with index 'aFsNumber' (child FS 'aFsNumber' is supported by automounter) |
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359 KErrNotFound if child FS 'aFsNumber' is not supported |
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360 */ |
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361 TInt CAutoMounterFileSystem::GetSupportedFileSystemName(TInt aFsNumber, TDes& aFsName) const |
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362 { |
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363 __PRINT2(_L("#<<- CAutoMounterFileSystem::GetSupportedFileSystemName[0x%x](%d)"), this, aFsNumber); |
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364 |
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365 if(aFsNumber == RFs::KRootFileSystem) |
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366 {//-- this is a name query for "root filesystem" or automounter |
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367 aFsName = Name(); //-- ourselves |
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368 return KErrNone; |
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369 } |
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370 |
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371 //-- this is a query for one of the child filesystems |
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372 if((TUint)aFsNumber < iFSNames.Count()) |
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373 { |
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374 aFsName = iFSNames[aFsNumber]; |
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375 return KErrNone; |
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376 } |
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377 |
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378 |
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379 return KErrNotFound; |
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380 } |
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381 |
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382 |
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383 //----------------------------------------------------------------------------- |
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384 /** |
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385 This is the only factory method that can be called by file server for this file system. |
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386 In this method the automounter sequentially tries to mount every child and on success produces the corresponding CMountCB object. |
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387 |
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388 @param apDrive pointer to the TDrive, child FS will need this to access media. |
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389 @param apFileSystem on return will contain the pointer to the CFileSystem that has produced the proped CMountCB if |
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390 one of the child file system has recognised the volume. |
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391 @param aForceMount if ETrue the appropriate child FS (designated by aFsNameHash) will be forcedly mounted on the volume. for volume formatting purposes. |
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392 @param aFsNameHash if !=0 specifies the file system name, see TVolFormatParam::CalcFSNameHash(). 0 means "file system name is not specified" |
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393 |
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394 @return pointer to the constructed CMountCB by one of the child file systems (and pointer to this child FS in apFileSystem) |
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395 NULL if it was impossible to produce proper CMountCB object. |
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396 |
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397 */ |
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398 CMountCB* CAutoMounterFileSystem::NewMountExL(TDrive* apDrive, CFileSystem** apFileSystem, TBool aForceMount, TUint32 aFsNameHash) |
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399 { |
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400 __PRINT4(_L("#<<- CAutoMounterFileSystem::NewMountExL[0x%x] drv:%d, ForceMount:%d, FSNameHash:0x%x"), this, apDrive->DriveNumber(), aForceMount, aFsNameHash); |
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401 |
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402 ASSERT(State() == EInitialised && apDrive); |
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403 |
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404 //-- This method is usually called from the appropriate drive thread; this file system is intended to be bound to |
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405 //-- removable drives. Having removable drive runnind in the main file server thread means that something is terribly wrongly configured. |
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406 if(apDrive->IsSynchronous()) |
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407 Fault(EWrongDriveAttributes); |
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408 |
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409 if(iFSNames.Count() < 2) |
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410 Fault(EWrongConfiguration); |
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411 |
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412 |
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413 //-- if aForceMount is true, this means that the TDrive tries mount the filesystem by force for formatting because normal mounting has failed before. |
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414 //-- in our case it means that the file system on the volume hadn't been recognised by any child FS. |
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415 //-- aFsNameHash shall designate the file system to be forcedly mounted. Depending on this the appropriat CMounCB object will be produced. |
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416 //-- if aFsNameHash is 0, i.e. not provided, this method will fail with KErrNotFound because it is impossible to select appropriat child FS. |
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417 if(aForceMount) |
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418 { |
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419 if(aFsNameHash == 0) |
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420 {//-- the file system to mount forcedly is not specified |
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421 __PRINT(_L("#<<- Unable to select appropriate child FS for formatting!")); |
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422 User::Leave(KErrNotFound); |
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423 } |
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424 else |
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425 {//-- try to find appropriate child FS by its name hash |
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426 CFileSystem *pFS = GetChildFileSysteByNameHash(aFsNameHash); |
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427 if(!pFS) |
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428 { |
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429 __PRINT(_L("#<<- no child FS found by its name hash!")); |
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430 ASSERT(0); |
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431 User::Leave(KErrNotFound); |
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432 } |
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433 |
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434 CMountCB* pMount = pFS->NewMountL(); |
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435 ASSERT(pMount); |
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436 |
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437 *apFileSystem = pFS; |
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438 return pMount; |
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439 } |
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440 }//if(aForceMount) |
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441 |
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442 |
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443 |
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444 //-- try instantiate a new CMountCB depending on the file system on the media |
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445 |
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446 CMountCB* pMatchedMount; |
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447 TInt nRes = TryMountFilesystem(apDrive, &pMatchedMount, apFileSystem); |
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448 |
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449 if(nRes == KErrNone) |
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450 { |
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451 ASSERT(pMatchedMount); |
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452 return pMatchedMount; |
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453 } |
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454 |
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455 |
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456 |
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457 User::Leave(nRes); |
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458 return NULL; |
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459 } |
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460 |
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461 //----------------------------------------------------------------------------- |
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462 /** |
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463 Initialise this file system. Reads and processes configuration, fills in file system names container, etc. |
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464 */ |
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465 void CAutoMounterFileSystem::InitialiseFileSystem() |
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466 { |
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467 __PRINT1(_L("#<<- CAutoMounterFileSystem::InitialiseFileSystem() [0x%x]"), this); |
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468 |
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469 ASSERT(State() == ENotInitialised); |
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470 |
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471 TInt nRes; |
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472 |
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473 |
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474 //-- 1. initialise the array of file system names. These names shall be listed in a config string. |
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475 //-- the config string is taken from estart.txt usually and its format is like this: |
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476 //-- section: [AutoMounter] and property "FSNames fat,exfat" |
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477 //-- in debug version a special text property can override the config string. This allows controlling automounter from |
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478 //-- the test environment. |
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479 |
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480 TBuf8<0x100> buf(0); |
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481 TBuf<0x100> fsName; |
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482 |
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483 |
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484 #ifdef _DEBUG |
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485 const TUid KSID_Test1={0x10210EB3}; //-- SID of the test that will define and set test property to control volume mounting |
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486 const TUint KPropKey = 0; //-- property key |
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487 |
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488 //-- in debug mode the property will override the estart.txt config |
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489 if(RProperty::Get(KSID_Test1, KPropKey, buf) == KErrNone) |
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490 { |
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491 __PRINT(_L("#<<- reading config from the debug propery...")); |
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492 } |
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493 else |
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494 #endif |
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495 { |
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496 __PRINT(_L("#<<- reading config from estart.txt...")); |
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497 _LIT8(KSection, "AutoMounter"); |
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498 _LIT8(KProperty, "FSNames"); |
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499 |
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500 nRes = F32Properties::GetString(KSection, KProperty, buf); |
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501 if(!nRes) |
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502 Fault(EPluginInitialise); |
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503 } |
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504 |
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505 |
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506 fsName.Copy(buf); |
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507 __PRINT1(_L("#<<- config:'%S'"), &fsName); |
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508 |
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509 //-- parse CSV config line and fill in the file system names array |
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510 const TChar chDelim = ','; //-- token delimiter, comma |
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511 buf.Trim(); |
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512 TPtrC8 ptrCurrLine(buf); |
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513 for(TInt i=0; ;++i) |
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514 { |
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515 const TInt delimPos = ptrCurrLine.Locate(chDelim); |
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516 if(delimPos <= 0) |
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517 { |
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518 fsName.Copy(ptrCurrLine); |
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519 } |
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520 else |
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521 { |
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522 TPtrC8 temp(ptrCurrLine.Ptr(), delimPos); |
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523 fsName.Copy(temp); |
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524 } |
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525 |
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526 fsName.Trim(); |
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527 __PRINT2(_L("#<<- child FS[%d]: '%S'"), i, &fsName); |
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528 |
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529 |
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530 if(fsName.Length() <= 0) |
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531 Fault(EPluginInitialise); |
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532 |
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533 //-- check if the FS name being appended is unique |
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534 for(TUint j=0; j<iFSNames.Count(); ++j) |
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535 { |
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536 if(iFSNames[j] == fsName) |
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537 { |
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538 Fault(EPluginInitialise); |
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539 } |
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540 } |
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541 |
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542 |
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543 nRes = iFSNames.Append(fsName); |
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544 ASSERT(nRes ==KErrNone); |
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545 |
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546 if(delimPos <=0 ) |
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547 break; |
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548 |
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549 ptrCurrLine.Set(ptrCurrLine.Ptr()+delimPos+1, ptrCurrLine.Length()-delimPos-1); |
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550 } |
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551 |
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552 |
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553 SetState(EInitialised); |
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554 |
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555 //-- 2. check that the file server has all filesystems we need instantiated and stored in a global container |
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556 TUint cnt = iFSNames.Count(); |
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557 if(cnt < 2) |
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558 { |
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559 __PRINT(_L("#<<- ::InitialiseFileSystem(): too few File Systems bound!")); |
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560 Fault(EPluginInitialise); |
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561 } |
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562 |
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563 while(cnt--) |
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564 { |
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565 GetChildFileSystem(cnt); |
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566 } |
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567 |
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568 |
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569 } |
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570 |
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571 |
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572 |
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573 //----------------------------------------------------------------------------- |
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574 /** |
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575 Tries to find out if some of the child file systems can be mounted on the given volume. |
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576 |
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577 @param apDrive pointer to the TDrive, child FS will need this to access media. |
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578 @param on return will contain the pointer to the CMountCB object if some of the childs has decided that it can be mounted. |
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579 @param apFS on return will contain the pointer to the CFileSystem that has produced the proped CMountCB if |
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580 |
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581 @return KErrNone on success, otherwise standard error code. |
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582 |
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583 */ |
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584 TInt CAutoMounterFileSystem::TryMountFilesystem(TDrive* apDrive, CMountCB** apMount, CFileSystem** apFS) |
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585 { |
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586 __PRINT1(_L("#<<- CAutoMounterFileSystem::TryMountFilesystem()[0x%x]"), this); |
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587 |
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588 const TInt KNumFS = iFSNames.Count(); |
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589 |
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590 ASSERT(State() == EInitialised && (KNumFS >1)); |
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591 |
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592 |
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593 *apMount = NULL; |
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594 *apFS = NULL; |
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595 |
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596 |
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597 TInt nRes; |
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598 TInt cntFS; |
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599 CMountCB* pMountCB = NULL; |
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600 CFileSystem* pMatchedFS = NULL; |
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601 |
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602 for(cntFS=0; cntFS < KNumFS; ++cntFS) |
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603 { |
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604 |
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605 __PRINT2(_L("#<<-@@ trying FS[%d]:%S"), cntFS, &iFSNames[cntFS]); |
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606 |
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607 CFileSystem* pFS = GetChildFileSystem(cntFS); //-- Find current filesystem object in the FileServer's global container |
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608 |
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609 //-- 2. create CMountCB instance and set it up |
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610 pMountCB = NULL; |
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611 |
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612 TRAP(nRes, pMountCB = pFS->NewMountL()); |
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613 if(nRes != KErrNone) |
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614 { |
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615 return KErrNoMemory; |
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616 } |
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617 |
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618 ASSERT(pMountCB); |
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619 pMountCB->SetDrive(apDrive); |
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620 |
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621 |
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622 //-- 2.1 Firstly try using special CMountCB interface to find out if current FS can be mounted on this media |
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623 nRes = pMountCB->CheckFileSystemMountable(); |
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624 if(nRes == KErrNotSupported) |
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625 { |
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626 //-- file system doesn't support this feature, |
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627 //-- 2.2 try to check the file system by mounting and dismounting later. It can result in some long activity, like FAT scanning etc. |
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628 TRAP(nRes, pMountCB->MountL(EFalse)); |
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629 pMountCB->Dismounted(); //-- dismount the mountCB, it will be required in dismounted state anyway |
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630 } |
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631 |
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632 //-- 2.3 analyse the result of mounting |
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633 if(nRes != KErrNone) |
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634 { |
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635 if(nRes == KErrLocked) |
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636 {//-- this is a special case; The media (SD card for example) is locked. |
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637 //-- Pretend that everything is OK and return CMountCB instance that is produced by the _default_ file system. |
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638 //-- locked media case will be handled by the file server later. |
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639 ASSERT(cntFS == KDefaultFSNo); //-- the default FS is tried first and must detect the locked media |
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640 pMatchedFS = pFS; |
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641 __PRINT(_L("#<<-@@ The media is LOCKED !")); |
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642 break; |
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643 } |
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644 |
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645 //-- failed to mount the file system, most likey it is not recognised |
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646 pMountCB->Close(); //-- this is a self-destructing object! |
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647 pMountCB = NULL; |
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648 __PRINT(_L("#<<-@@ Mount FAILED !")); |
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649 } |
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650 else |
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651 { |
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652 //-- mounted OK, the file system is recognised |
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653 __PRINT(_L("#<<-@@ Mount OK!")); |
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654 |
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655 pMatchedFS = pFS; |
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656 break; |
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657 } |
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658 |
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659 }//for(cntFS=0; cntFS<KNumFS; ++cntFS) |
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660 |
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661 if(cntFS >= KNumFS) |
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662 {//-- no one from the FS factories recognised the file system |
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663 __PRINT1(_L("#<<- ::TryMountFilesystem()[0x%x] No file system recognised!"), this); |
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664 |
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665 SetName(&KFileSystemName_AutoMounter); |
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666 return KErrCorrupt; |
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667 } |
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668 |
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669 ASSERT(pMountCB && pMatchedFS); |
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670 *apMount = pMountCB; |
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671 *apFS = pMatchedFS; |
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672 |
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673 //-- set this FS name to the name of recognised FS. In this case the automounter "pretends" to be one of the child file systems on |
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674 //-- successful mounting. This behaviour was considered to be incorrect. |
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675 //TPtrC fsName = pMatchedFS->Name(); |
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676 //SetName(&fsName); |
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677 |
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678 return KErrNone; |
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679 |
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680 } |
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681 |
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682 //----------------------------------------------------------------------------- |
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683 /** |
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684 get the child file system object by the index in file child system names container |
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685 |
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686 @param aIndex index in the iFSNames |
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687 @return pointer to the FS object if it is found, NULL otherwise |
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688 */ |
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689 CFileSystem* CAutoMounterFileSystem::GetChildFileSystem(TUint aIndex) const |
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690 { |
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691 ASSERT(State() == EInitialised && (iFSNames.Count() >1) && aIndex < iFSNames.Count()); |
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692 |
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693 const TDesC& fsName = iFSNames[aIndex]; //-- registered child file system name |
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694 CFileSystem* pFS = GetFileSystem(fsName); //-- Find filesystem object in the FileServer's global container |
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695 |
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696 if(!pFS) |
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697 { |
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698 __PRINT1(_L("#<<- CAutoMounterFileSystem::GetChildFileSystem() FileServer doesn't have FS:%S Added!"), &fsName); |
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699 Fault(EFileSysNotAdded); |
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700 } |
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701 |
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702 return pFS; |
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703 } |
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704 |
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705 //----------------------------------------------------------------------------- |
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706 /** |
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707 Find the child file system object by the file system name name hash. |
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708 @param aFsNameHash FS name hash |
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709 @return pointer to the FS object if it is found, NULL otherwise |
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710 */ |
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711 CFileSystem* CAutoMounterFileSystem::GetChildFileSysteByNameHash(TUint32 aFsNameHash) const |
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712 { |
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713 ASSERT(State() == EInitialised && (iFSNames.Count() >1) && aFsNameHash); |
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714 |
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715 for(TUint i=0; i<iFSNames.Count(); ++i) |
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716 { |
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717 if(aFsNameHash == iFSNames.GetStringHash(i)) |
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718 { |
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719 const TDesC& fsName = iFSNames[i]; //-- registered child file system name |
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720 __PRINT2(_L("#<<- ::GetChildFileSysteByNameHash() found FsName:%S by hash:0x%x"), &fsName, aFsNameHash); |
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721 CFileSystem* pFS = GetFileSystem(fsName); //-- Find filesystem object in the FileServer's global container |
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722 ASSERT(pFS); |
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723 return pFS; |
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724 } |
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725 |
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726 } |
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727 |
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728 __PRINT1(_L("#<<- ::GetChildFileSysteByNameHash() No FS name found by hash:0x%x"), aFsNameHash); |
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729 |
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730 return NULL; |
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731 } |
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732 |
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733 |
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734 |
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735 |
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736 //####################################################################################################################################### |
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737 //# XStringArray implementation |
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738 //####################################################################################################################################### |
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739 |
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740 XStringArray::XStringArray() |
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741 { |
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742 } |
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743 |
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744 XStringArray::~XStringArray() |
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745 { |
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746 Reset(); |
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747 iStrings.Close(); |
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748 } |
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749 |
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750 //----------------------------------------------------------------------------- |
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751 void XStringArray::Reset() |
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752 { |
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753 iStrings.ResetAndDestroy(); |
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754 } |
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755 |
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756 //----------------------------------------------------------------------------- |
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757 const TDesC& XStringArray::operator[](TUint aIndex) const |
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758 { |
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759 if(aIndex >= (TUint)iStrings.Count()) |
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760 Panic(EIndexOutOfRange); |
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761 |
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762 HBufC* des=iStrings[aIndex]; |
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763 return *des; |
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764 } |
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765 |
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766 //----------------------------------------------------------------------------- |
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767 /** |
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768 Append file system name to the container. The name is converted to upper case. |
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769 @param aString name descriptor. |
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770 @return standard error code |
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771 */ |
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772 TInt XStringArray::Append(const TDesC& aString) |
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773 { |
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774 HBufC* pBuf = aString.Alloc(); |
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775 if(!pBuf) |
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776 return KErrNoMemory; |
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777 |
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778 //-- string being appended shall be unique |
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779 for(TUint i=0; i<Count(); ++i) |
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780 { |
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781 if(operator[](i).CompareF(aString) == 0) |
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782 { |
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783 ASSERT(0); |
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784 return KErrNone; |
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785 } |
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786 } |
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787 |
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788 pBuf->Des().UpperCase(); //-- convert the FS name to upper-case in order to correctly calculate hash later |
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789 return iStrings.Append(pBuf); |
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790 } |
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791 |
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792 |
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793 //----------------------------------------------------------------------------- |
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794 /** |
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795 Get child FS name hash by index in the names container. |
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796 @param aIndex name index in the container |
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797 @return file system name hash (crc32) |
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798 */ |
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799 TUint32 XStringArray::GetStringHash(TUint aIndex) const |
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800 { |
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801 const TDesC& des = operator[](aIndex); |
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802 return TVolFormatParam::CalcFSNameHash(des); |
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803 } |
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804 |
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805 |
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806 |
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807 void XStringArray::Panic(TPanicCode aPanicCode) const |
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808 { |
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809 _LIT(KPanicCat,"XStringArray"); |
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810 User::Panic(KPanicCat, aPanicCode); |
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811 } |
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812 |
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813 |
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814 |
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815 |
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816 |
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817 |
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818 |
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819 |
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820 |
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821 |
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822 |
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823 |
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824 |
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825 |
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826 |
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827 |
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828 |
|
829 |
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830 |
|
831 |
|
832 |
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833 |
|
834 |
|
835 |
|
836 |
|
837 |
|
838 |
|
839 |
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840 |
|
841 |
|
842 |
|
843 |