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1 /* |
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2 * Copyright (c) 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: Mounts during boot remote drives configured in CenRep |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <f32file.h> // link against efsrv.lib |
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20 #include <centralrepository.h> // link against centralrepository.lib |
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21 #include <f32fsys.h> |
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22 |
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23 // for the file server client side API |
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24 _LIT(KRemoteFSName, "RemoteFS"); |
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25 _LIT(KRemoteFs, "eremotefs"); |
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26 |
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27 |
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28 // for the central repository API |
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29 enum TMountEntryItemIndex |
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30 { |
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31 EMountEntryItemIndex, |
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32 EMountEntryItemName, |
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33 EMountEntryItemDrive, |
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34 EMountEntryItemUri, |
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35 EMountEntryItemUserName, |
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36 EMountEntryItemPassword, |
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37 EMountEntryItemIap, |
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38 EMountEntryItemInactivityTimeout, |
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39 EMountEntryItemReserved, |
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40 EMountEntryItemCount |
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41 }; |
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42 const TUid KCRUidRsfwCtrl = { 0x101F9775 }; // RSFW cenrep table id |
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43 const TUint KColumnName = EMountEntryItemName; |
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44 const TUint KColumnMask = 0x000000ff; |
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45 const TUint KRowMask = 0xffffff00; |
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46 const TInt KMaxFileSystemName = 256; |
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47 const TInt KMaxDriveLetterLength = 5; |
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48 const TInt KMaxFriendlyNameLength = 20; |
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49 |
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50 |
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51 // isRsfwFileSystem |
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52 // |
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53 // Checks whether certain drive has rsfw file system mounted on it |
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54 // |
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55 // |
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56 LOCAL_C TBool isRsfwFileSystemL(TInt aDrive, |
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57 TDriveList aDriveList, |
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58 RFs aFsSession) |
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59 { |
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60 TBool rsfwFileSystem = EFalse; |
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61 // check first KDriveAttRemote bit as if that is missing it is a quick way |
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62 // to conclude that this is not a rsfw mount |
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63 if (aDriveList[aDrive] & KDriveAttRemote) |
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64 { |
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65 TInt err; |
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66 HBufC* filesystemName = HBufC::NewL(KMaxFileSystemName); |
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67 TPtr itemPtr = filesystemName->Des(); |
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68 err = aFsSession.FileSystemName(itemPtr, aDrive); |
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69 if (!err && (itemPtr.Compare(KRemoteFSName) == 0)) |
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70 { |
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71 rsfwFileSystem = ETrue; |
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72 } |
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73 delete filesystemName; |
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74 } |
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75 return rsfwFileSystem; |
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76 } |
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77 |
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78 |
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79 |
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80 // DoMountL |
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81 // |
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82 // Do either simple mount or replace (our) existing mount |
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83 // by doing dismount and mount |
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84 // |
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85 // |
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86 LOCAL_C TInt DoMount(TInt aDrive, RFs aFsSession, TBool aReplaceExisting) |
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87 |
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88 { |
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89 TInt err; |
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90 if (aReplaceExisting) |
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91 { |
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92 // ignore dismount error code |
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93 aFsSession.DismountFileSystem(KRemoteFSName, aDrive); |
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94 err = aFsSession.MountFileSystem(KRemoteFSName, aDrive); |
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95 } |
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96 else |
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97 { |
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98 err = aFsSession.MountFileSystem(KRemoteFSName, aDrive); |
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99 } |
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100 return err; |
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101 } |
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102 |
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103 |
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104 // ExecuteFileServerMountL |
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105 // |
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106 // Attempts to mount our file system to the file server |
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107 // |
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108 // |
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109 LOCAL_C TInt ExecuteFileServerMountL(TInt aDrive, |
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110 TDriveList aDriveList, |
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111 RFs aFsSession) |
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112 { |
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113 TInt err; |
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114 if (aDriveList[aDrive]) |
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115 { |
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116 if (isRsfwFileSystemL(aDrive, aDriveList, aFsSession)) |
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117 { |
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118 err = DoMount(aDrive, aFsSession, ETrue); |
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119 } |
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120 else |
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121 { |
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122 // the drive we attempt to mount contains some other file system |
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123 return KErrInUse; |
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124 } |
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125 } |
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126 else |
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127 { |
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128 // the drive we attempt to mount does not contain an existing mount |
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129 err = DoMount(aDrive, aFsSession, EFalse); |
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130 } |
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131 return err; |
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132 } |
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133 |
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134 |
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135 // SetFriendlyNameL |
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136 // |
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137 // Sets the friendly name of the remote drive to |
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138 // mounted fs drivename and volumename fields |
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139 // (to the volume name field first 11 chars) |
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140 // |
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141 // This function assumes that we are allowed to manipulate |
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142 // drive aDrive, in practise that ExecuteFileServerMount() |
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143 // has been called succesfully |
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144 // |
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145 LOCAL_C TInt SetFriendlyName(TInt aDrive, |
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146 TDesC& aFriendlyName, |
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147 RFs aFsSession) |
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148 { |
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149 TInt err; |
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150 err = aFsSession.SetDriveName(aDrive, aFriendlyName); |
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151 if (!err) |
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152 { |
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153 TPtrC volumeNamePtr = aFriendlyName.Left(KMaxVolumeNameLength); |
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154 err = aFsSession.SetVolumeLabel(volumeNamePtr, aDrive); |
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155 } |
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156 return err; |
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157 } |
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158 |
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159 // ---------------------------------------------------------------------------- |
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160 // SyncConfiguredRemoteDrivesL |
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161 // adds RSFW File Server plug-in |
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162 // and synchronizes Central Repository's view of configured remote drives |
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163 // with File Server's view (mounts the remote drives configured in CR and |
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164 // unmounts those remote drives that are not anymore configured) |
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165 // ---------------------------------------------------------------------------- |
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166 // |
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167 LOCAL_C void SyncConfiguredRemoteDrivesL() |
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168 { |
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169 TInt err = 0; |
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170 TInt row = 0; |
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171 TInt driveNumber = 0; |
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172 RFs fs; |
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173 TChar paramLetter(90); |
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174 TBool paramSet = EFalse; |
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175 |
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176 User::LeaveIfError(fs.Connect()); |
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177 CleanupClosePushL(fs); |
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178 |
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179 // it is possible to manipulate only one drive letter, and give that as an argument |
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180 TInt clinelength = User::CommandLineLength(); |
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181 if (clinelength > 0) |
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182 { |
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183 HBufC* cl = HBufC::NewL(clinelength); |
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184 TPtr linePtr = cl->Des(); |
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185 User::CommandLine(linePtr); |
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186 TLex lex(linePtr); |
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187 paramLetter = lex.Get(); |
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188 paramSet = ETrue; |
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189 delete cl; |
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190 } |
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191 |
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192 // add our file system plugin to the file server |
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193 err = fs.AddFileSystem(KRemoteFs); |
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194 if ((err != KErrNone) && (err != KErrAlreadyExists)) |
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195 { |
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196 User::Leave(err); |
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197 } |
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198 |
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199 // Get a list of drives in the File Server |
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200 TDriveList drives; |
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201 User::LeaveIfError(fs.DriveList(drives, KDriveAttAll)); |
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202 // (drives[i] & KDriveAttRemote) now tells whether i:th drive is remote |
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203 |
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204 // Get a list of remote drives in the central repository table |
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205 |
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206 // connect |
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207 CRepository* cenrep; |
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208 cenrep = CRepository::NewL(KCRUidRsfwCtrl); |
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209 CleanupStack::PushL(cenrep); |
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210 |
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211 // find all entries by name |
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212 RArray<TUint32> nameIds; |
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213 CleanupClosePushL(nameIds); |
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214 err = cenrep->FindL(KColumnName, KColumnMask, nameIds); |
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215 if (!err) |
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216 { |
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217 // for each remote drive entry, represented by a record in central repository, do the following: |
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218 // 1) get drive letter from central repository |
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219 // 2) based on drive letter acquire corresponding drive number from the File Server |
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220 // 3) check whether in the File Server there is already mounted a drive with given number |
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221 // 3.1) if there is NOT, then mount the drive |
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222 // 3.2) if there is and it appears to be remote, then do re-mounting |
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223 // 3.3) if there is and it appears NOT to be remote, then this means error |
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224 // 4) still for the same record from central repository, get the name of the drive |
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225 // 5) use this name as the volume label in the File Server |
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226 for (row = 0; row < nameIds.Count(); row++) |
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227 { |
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228 TUint rowId = (nameIds[row] & KRowMask); |
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229 // don't touch zero row as it DOES NOT contain info about mounted drives |
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230 if (rowId > 0) |
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231 { |
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232 TInt i; |
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233 // mount it to the file server |
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234 |
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235 // get drive number |
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236 TBuf<KMaxDriveLetterLength> driveLetter; |
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237 i = EMountEntryItemDrive; |
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238 User::LeaveIfError(cenrep->Get(rowId | i, driveLetter)); |
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239 |
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240 // driveNumber needed in any case, so that we can mark this as existing drive |
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241 if (driveLetter.Length() > 0) |
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242 { |
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243 User::LeaveIfError(fs.CharToDrive((driveLetter)[0], driveNumber)); |
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244 } |
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245 else |
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246 { |
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247 User::Leave(KErrBadName); |
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248 } |
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249 |
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250 // proceed this drive if we didn't get any drive |
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251 // letter as a parameter or we got this one |
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252 if ((!paramSet) || (paramLetter == driveLetter[0])) |
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253 { |
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254 // get friendly name |
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255 TBuf<KMaxFriendlyNameLength> friendlyName; |
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256 i = EMountEntryItemName; |
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257 User::LeaveIfError(cenrep->Get(rowId | i, friendlyName)); |
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258 |
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259 if (friendlyName.Length() > 0) |
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260 { |
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261 User::LeaveIfError(ExecuteFileServerMountL(driveNumber, drives, fs)); |
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262 User::LeaveIfError(SetFriendlyName(driveNumber, friendlyName,fs)); |
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263 } |
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264 |
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265 else |
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266 { |
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267 User::Leave(KErrBadName); |
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268 } |
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269 } |
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270 |
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271 // do not unmount this drive as it is still in the CenRep table |
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272 // after this loop non-zero drives are used to see |
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273 // which remote drives should be unmounted |
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274 drives[driveNumber] = 0; |
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275 } |
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276 } // loop |
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277 } |
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278 |
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279 // If drives now contain some remote drives, this means that they are not |
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280 // anymore configured in CenRep and should be unmounted. |
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281 for (int i = 0; i < EDriveZ; i++) |
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282 { |
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283 if (isRsfwFileSystemL(i, drives, fs)) |
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284 { |
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285 fs.DismountFileSystem(KRemoteFSName, i); |
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286 } |
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287 } |
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288 |
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289 CleanupStack::PopAndDestroy(3, &fs); // fs, cenrep, nameIds |
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290 |
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291 } |
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292 |
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293 // ---------------------------------------------------------------------------- |
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294 // E32Main |
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295 // |
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296 // ---------------------------------------------------------------------------- |
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297 // |
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298 GLDEF_C TInt E32Main() |
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299 { |
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300 CTrapCleanup* cleanupStack = CTrapCleanup::New(); |
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301 TRAPD(err, SyncConfiguredRemoteDrivesL()); |
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302 delete cleanupStack; |
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303 return err; |
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304 } |
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305 |
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306 |
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307 // End of file |