1 /* |
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2 * Copyright (c) 2005-2006 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: State machine for opening a file or directory |
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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 "rsfwopenbypathstatemachine.h" |
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20 #include "rsfwfileentry.h" |
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21 #include "rsfwfiletable.h" |
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22 #include "rsfwvolumetable.h" |
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23 #include "rsfwvolume.h" |
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24 #include "rsfwinterface.h" |
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25 #include "rsfwfileengine.h" |
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26 #include "rsfwlockmanager.h" |
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27 #include "mdebug.h" |
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28 |
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29 |
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30 // ---------------------------------------------------------------------------- |
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31 // CRsfwOpenByPathStateMachine::CRsfwOpenByPathStateMachine |
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32 // ---------------------------------------------------------------------------- |
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33 // |
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34 CRsfwOpenByPathStateMachine::CRsfwOpenByPathStateMachine() |
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35 { |
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36 } |
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37 |
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38 // ---------------------------------------------------------------------------- |
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39 // CRsfwOpenByPathStateMachine::~CRsfwOpenByPathStateMachine |
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40 // ---------------------------------------------------------------------------- |
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41 // |
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42 CRsfwOpenByPathStateMachine::~CRsfwOpenByPathStateMachine() |
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43 { |
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44 delete iLockToken; |
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45 } |
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46 |
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47 // ---------------------------------------------------------------------------- |
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48 // CRsfwOpenByPathStateMachine::CompleteRequestL |
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49 // ---------------------------------------------------------------------------- |
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50 // |
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51 CRsfwRfeStateMachine::TState* |
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52 CRsfwOpenByPathStateMachine::CompleteRequestL(TInt aError) |
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53 { |
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54 DEBUGSTRING(("CRsfwOpenByPathStateMachine::CompleteRequestL %d", aError)); |
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55 TRfeOpenByPathOutArgs* outArgs = |
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56 static_cast<TRfeOpenByPathOutArgs*>(iOutArgs); |
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57 if(!aError) |
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58 { |
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59 if ((Node()->Type() == KNodeTypeFile) && |
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60 iRealOpen) |
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61 { |
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62 // file opened successfully and was not already opened in create |
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63 Node()->iFileTable->UpdateOpenFileCount(1); |
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64 } |
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65 |
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66 outArgs->iPath.Copy(*iCacheName); |
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67 iAttrp->iAtt = Node()->Att(); |
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68 iAttrp->iSize = Node()->Size(); |
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69 iAttrp->iModified = Node()->Modified(); |
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70 } |
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71 |
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72 CompleteAndDestroyState()->SetErrorCode(aError); |
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73 return CompleteAndDestroyState(); |
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74 } |
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75 |
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76 // ---------------------------------------------------------------------------- |
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77 // CRsfwOpenByPathStateMachine::TRequestOpenModeState::TRequestOpenModeState |
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78 // ---------------------------------------------------------------------------- |
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79 // |
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80 CRsfwOpenByPathStateMachine::TRequestOpenModeState::TRequestOpenModeState( |
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81 CRsfwOpenByPathStateMachine* aParent) |
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82 : iOperation(aParent) |
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83 { |
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84 iRequestedLock = EFalse; |
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85 } |
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86 |
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87 // ---------------------------------------------------------------------------- |
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88 // CRsfwOpenByPathStateMachine::TRequestOpenModeState::EnterL |
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89 // ---------------------------------------------------------------------------- |
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90 // |
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91 void CRsfwOpenByPathStateMachine::TRequestOpenModeState::EnterL() |
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92 { |
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93 |
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94 DEBUGSTRING(("CRsfwOpenByPathStateMachine::TRequestOpenModeState::EnterL")); |
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95 |
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96 TRfeOpenByPathInArgs* inArgs = |
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97 static_cast<TRfeOpenByPathInArgs*>(iOperation->iInArgs); |
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98 TRfeOpenByPathOutArgs* outArgs = |
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99 static_cast<TRfeOpenByPathOutArgs*>(iOperation->iOutArgs); |
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100 iOperation->iRealOpen = inArgs->iTrueOpen; |
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101 // Use inArgs->iFlags to pass desired locking information |
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102 iOperation->iFlags = inArgs->iFlags; |
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103 iOperation->iAttrp = &(outArgs->iAttr); |
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104 |
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105 if (!iOperation->Node()) |
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106 { |
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107 User::Leave(KErrNotFound); |
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108 } |
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109 |
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110 if (iOperation->Node()->Size() > iOperation->Volumes()->iMaxCacheSize) |
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111 { |
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112 DEBUGSTRING(("OPENBYPATH failed: file too large: file size %d, max cache size %d", |
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113 iOperation->Node()->Size(), |
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114 iOperation->Volumes()->iMaxCacheSize)); |
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115 User::Leave(KErrTooBig); |
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116 } |
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117 |
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118 DEBUGSTRING(("opening fid %d with flags 0x%x", |
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119 iOperation->Node()->Fid().iNodeId, |
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120 iOperation->iFlags)); |
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121 |
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122 if (!iOperation->FileEngine()->WriteDisconnected()) |
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123 { |
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124 if (!(iOperation->Node()->IsLocked()) && |
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125 (iOperation->Node()->Type() != KNodeTypeDir) && |
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126 (iOperation->iFlags & EFileWrite)) |
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127 { |
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128 DEBUGSTRING(("requesting lock")); |
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129 // For the time being |
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130 // if flag is 0 we are not interested in getting a lock |
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131 iOperation->FileEngine()->LockManager()->ObtainLockL( |
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132 iOperation->Node(), |
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133 iOperation->iFlags, |
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134 iOperation->iLockToken, |
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135 iOperation); |
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136 iRequestedLock = ETrue; |
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137 } |
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138 else |
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139 { |
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140 // IsLocked() || !(iOperation->iFlags & EFileWrite) |
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141 iOperation->HandleRemoteAccessResponse(0, KErrNone); |
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142 } |
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143 } |
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144 else |
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145 { |
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146 // if WriteDisconnected() |
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147 iOperation->HandleRemoteAccessResponse(0, KErrNone); |
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148 } |
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149 } |
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150 |
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151 // ---------------------------------------------------------------------------- |
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152 // CRsfwOpenByPathStateMachine::TRequestOpenModeState::CompleteL |
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153 // ---------------------------------------------------------------------------- |
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154 // |
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155 CRsfwOpenByPathStateMachine::TState* |
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156 CRsfwOpenByPathStateMachine::TRequestOpenModeState::CompleteL() |
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157 { |
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158 DEBUGSTRING(("CRsfwOpenByPathStateMachine::TRequestOpenModeState::CompleteL")); |
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159 if (iRequestedLock) |
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160 { |
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161 //from CRsfwLockManager::ObtainLock() |
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162 #ifdef _DEBUG |
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163 TPtrC p = iOperation->Node()->FullNameLC()->Des(); |
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164 DEBUGSTRING16(("ObtainLockL(): flags %d returned %d for file '%S'", |
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165 iOperation->iFlags, |
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166 KErrNone, |
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167 &p)); |
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168 CleanupStack::PopAndDestroy(); |
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169 #endif // DEBUG |
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170 iOperation->Node()->SetLockedL( |
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171 iOperation->FileEngine()->LockManager(), |
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172 iOperation->iLockToken); |
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173 iOperation->iLockToken = NULL; |
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174 } |
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175 |
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176 iOperation->iCacheName = iOperation->Node()->CacheFileName(); |
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177 |
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178 // make sure that the relevant cache file is on place |
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179 // (i.e. it has not been removed e.g. by other apps) |
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180 iOperation->Node()->ValidateCacheFile(); |
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181 |
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182 if (!iOperation->Node()->IsCached()) |
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183 { |
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184 if (iOperation->FileEngine()->Disconnected()) |
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185 { |
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186 if ((iOperation->Node()->Type() != KNodeTypeDir) && |
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187 !(iOperation->iFlags & EFileWrite)) |
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188 { |
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189 // While disconnected, |
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190 // write access of files returns "not found" |
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191 return iOperation->CompleteRequestL(KErrNotFound); |
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192 } |
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193 } |
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194 iOperation->FileEngine()->CreateContainerFileL(*(iOperation->Node())); |
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195 iOperation->iCacheName = iOperation->Node()->CacheFileName(); |
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196 } |
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197 else // is cached |
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198 { |
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199 if (iOperation->Node()->IsLocallyDirty()) |
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200 { |
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201 // This is a directory which has at least one kid |
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202 // that has been cached or flushed since the last opening |
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203 // of the directory |
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204 iOperation->FileEngine()->UpdateDirectoryContainerL( |
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205 *(iOperation->Node())); |
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206 } |
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207 |
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208 // If this is a cached file, |
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209 // we must remove it from LRUlist as it is now open |
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210 if (iOperation->iRealOpen) |
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211 { |
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212 iOperation->Node()->iFileTable->Volume()->iVolumeTable-> |
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213 RemoveFromLRUPriorityList(iOperation->Node()); |
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214 } |
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215 } |
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216 |
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217 // if file or dir has just been opened, remove it from metadata LRU list |
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218 iOperation->Node()->iFileTable->Volume()->iVolumeTable-> |
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219 RemoveFromMetadataLRUPriorityList(iOperation->Node()); |
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220 |
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221 return iOperation->CompleteRequestL(KErrNone); |
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222 } |
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223 |
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224 // ---------------------------------------------------------------------------- |
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225 // CRsfwOpenByPathStateMachine::TRequestOpenModeState::ErrorL |
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226 // fileEngine->RequestConnectionStateL() has returned with error |
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227 // ---------------------------------------------------------------------------- |
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228 // |
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229 CRsfwOpenByPathStateMachine::TState* |
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230 CRsfwOpenByPathStateMachine::TRequestOpenModeState::ErrorL(TInt aCode) |
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231 { |
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232 DEBUGSTRING(("CRsfwOpenByPathStateMachine::TRequestOpenModeState::ErrorL %d", aCode)); |
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233 // from CRsfwFileEngine::DoOpenByPath() |
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234 if (aCode == KErrNotSupported) |
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235 { |
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236 iRequestedLock = EFalse; |
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237 // locks not supported is not an error state |
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238 // instead we run the success state... |
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239 return CompleteL(); |
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240 } |
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241 |
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242 //from CRsfwLockManager::ObtainLock() |
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243 #ifdef _DEBUG |
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244 TPtrC p = iOperation->Node()->FullNameLC()->Des(); |
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245 DEBUGSTRING16(("ObtainLockL(): flags %d returned %d for file '%S'", |
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246 iOperation->iFlags, |
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247 aCode, |
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248 &p)); |
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249 CleanupStack::PopAndDestroy(); |
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250 #endif |
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251 |
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252 return iOperation->CompleteRequestL(aCode); |
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253 } |
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254 |
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