1 /* |
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2 * Copyright (c) 2003-2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Factory class for a file system. Allows creating |
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15 * objects derived from CMountCB, CFileCB, CDirCB and CFormatCB. |
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16 * |
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17 */ |
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18 |
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19 |
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20 #include "rsfwfilesystem.h" |
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21 #include <f32ver.h> |
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22 #include "rsfwfsfilecb.h" |
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23 #include "rsfwfsdircb.h" |
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24 #include "rsfwfsmountcb.h" |
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25 #include "rsfwfsformatcb.h" |
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26 #include "rsfwinterface.h" |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // static constructor |
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31 CRsfwFileSystem* CRsfwFileSystem::New() |
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32 { |
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33 // non-leaving new, NULL returned for failed creation |
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34 CRsfwFileSystem *self = new CRsfwFileSystem; |
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35 return self; |
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36 } |
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37 |
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38 // ----------------------------------------------------------------------------- |
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39 // CRsfwFileSystem::CRsfwFileSystem |
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40 // C++ default constructor can NOT contain any code, that |
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41 // might leave. |
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42 // ----------------------------------------------------------------------------- |
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43 // |
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44 CRsfwFileSystem::CRsfwFileSystem() |
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45 { |
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46 } |
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47 |
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48 // Destructor |
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49 CRsfwFileSystem::~CRsfwFileSystem() |
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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 // CRsfwFileSystem::Install |
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55 // Installs the file system. |
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56 |
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57 // The function sets the name of the file system object through a call |
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58 // to CObject::SetName(), thus making it accessible, internally, |
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59 // using FileSystems->FindByFullName(). This enables the file server |
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60 // to find and handle installed file systems. The function also sets |
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61 // unique identifier for the file system and the file system version. |
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62 // The version is determined by the file system implementation. |
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63 // It is used in calls to CFileSystem::QueryVersionSupported(). |
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64 // |
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65 // (other items were commented in a header). |
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66 // ----------------------------------------------------------------------------- |
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67 // |
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68 TInt CRsfwFileSystem::Install() |
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69 { |
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70 |
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71 iVersion = TVersion(KF32MajorVersionNumber, |
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72 KF32MinorVersionNumber, |
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73 KF32BuildVersionNumber); |
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74 |
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75 TTime timeID; |
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76 timeID.HomeTime(); |
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77 iUniqueID = I64LOW(timeID.Int64()); |
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78 |
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79 return (SetName(&KRemoteFSName)); |
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80 |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CRsfwFileSystem::Remove |
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85 // This is called just before the file system object is destroyed, and allows |
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86 // any clean up to be carried out. |
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87 // (other items were commented in a header). |
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88 // ----------------------------------------------------------------------------- |
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89 // |
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90 TInt CRsfwFileSystem::Remove() |
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91 { |
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92 |
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93 return KErrNone; |
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94 |
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95 } |
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96 |
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97 // ----------------------------------------------------------------------------- |
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98 // CRsfwFileSystem::NewMountL |
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99 // Creates a new remote mount control block, a CMountCB derived object. |
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100 // On success, a pointer to the new mount object is returned, |
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101 // otherwise the function leaves. |
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102 // |
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103 // This function is defined as a const function in the base class CFileSystem. |
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104 // However, we need to pass to the mount class modifiable pointers to |
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105 // the shared memory chunks used in the parameter passing. That's why we need |
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106 // to cast away const. |
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107 // |
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108 // (other items were commented in a header). |
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109 // ----------------------------------------------------------------------------- |
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110 // |
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111 CMountCB* CRsfwFileSystem::NewMountL() const |
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112 { |
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113 |
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114 return const_cast<CRsfwFileSystem*>(this)->NewRemoteFsMountL(); |
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115 |
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116 } |
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117 |
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118 |
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119 // ----------------------------------------------------------------------------- |
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120 // CRsfwFileSystem::NewFileL |
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121 // Creates a new remote file control block, i.e. a CFileCB derived object. |
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122 // On success, a pointer to the new file object is returned, |
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123 // otherwise the function leaves. |
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124 // (other items were commented in a header). |
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125 // ----------------------------------------------------------------------------- |
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126 // |
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127 CFileCB* CRsfwFileSystem::NewFileL() const |
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128 { |
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129 return new(ELeave) CRsfwFsFileCB(); |
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130 } |
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131 |
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132 |
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133 // ----------------------------------------------------------------------------- |
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134 // CRsfwFileSystem::NewDirL |
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135 // Creates a new remote directory control block, i.e. a CDirCB derived object. |
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136 // On success, a pointer to the new directory control block is returned, |
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137 // otherwise the function leaves. |
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138 // (other items were commented in a header). |
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139 // ----------------------------------------------------------------------------- |
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140 // |
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141 CDirCB* CRsfwFileSystem::NewDirL() const |
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142 { |
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143 return(CRsfwFsDirCB::NewL()); |
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144 } |
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145 |
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146 // ----------------------------------------------------------------------------- |
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147 // CRsfwFileSystem::NewFormatL |
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148 // Creates a new remote volume format control block, i.e. a CFormatCB derived object. |
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149 // On success, a pointer to the new volume format control block is returned, |
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150 // otherwise the function leaves. |
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151 // (other items were commented in a header). |
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152 // ----------------------------------------------------------------------------- |
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153 // |
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154 CFormatCB* CRsfwFileSystem::NewFormatL() const |
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155 { |
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156 return new(ELeave) CRsfwFsFormatCB(); |
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157 } |
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158 |
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159 // ----------------------------------------------------------------------------- |
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160 // CRsfwFileSystem::DriveInfo |
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161 // Retrieves drive information. |
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162 // The function assumes that we are not handling different local drives, and |
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163 // sets anInfo.iMediaAtt, anInfo.iDriveAtt and anInfo.iType to values "sensible" |
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164 // for remote drives discarding the specified drive number. For local drives |
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165 // the function would obtain the necessary information by calling the appropriate |
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166 // TBusLocalDrive::Caps() function using the argument aDriveNumber. |
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167 |
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168 // Note that and anInfo.iBatteryState will already have been |
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169 // set by the calling function. |
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170 |
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171 // (other items were commented in a header). |
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172 // ----------------------------------------------------------------------------- |
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173 // |
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174 void CRsfwFileSystem::DriveInfo( |
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175 TDriveInfo& anInfo, |
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176 TInt /* aDriveNumber */) const |
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177 { |
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178 |
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179 anInfo.iType = EMediaRemote; |
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180 anInfo.iMediaAtt = KMediaAttVariableSize; |
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181 anInfo.iDriveAtt = KDriveAttRemote; |
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182 |
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183 } |
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184 |
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185 // ----------------------------------------------------------------------------- |
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186 // CRsfwFileSystem::NewRemoteFsMountL |
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187 // Creates a new remote mount control block, a CMountCB derived object. |
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188 // On success, a pointer to the new mount object is returned, |
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189 // otherwise the function leaves. |
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190 // (other items were commented in a header). |
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191 // ----------------------------------------------------------------------------- |
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192 // |
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193 CMountCB* CRsfwFileSystem::NewRemoteFsMountL() |
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194 { |
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195 |
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196 return CRsfwFsMountCB::NewL(); |
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197 |
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198 } |
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199 |
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200 // ----------------------------------------------------------------------------- |
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201 // CRsfwFileSystem::DefaultPath |
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202 // Returns the default path for the file system. |
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203 // Always returns "C:\\". |
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204 // |
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205 // Each session with the file server has a current session path. |
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206 // When a new session is opened, its session path is set to the default path |
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207 // of the file server. At file server start-up, this default path is set to the |
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208 // default path returned by the local file system. |
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209 // The default implementation in the base class raises an "Fserv fault" 31 panic. |
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210 // |
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211 // (other items were commented in a header). |
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212 // ----------------------------------------------------------------------------- |
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213 // |
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214 TInt CRsfwFileSystem::DefaultPath( |
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215 TDes& aPath) const |
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216 { |
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217 |
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218 _LIT(KDefaultPath, "C:\\"); |
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219 aPath = KDefaultPath; |
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220 return (KErrNone); |
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221 |
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222 } |
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223 |
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