1 // Copyright (c) 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 "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: Implements a Symbian OS server that exposes the RUsbMassStorage API |
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14 // |
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15 // |
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16 |
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17 #include <e32svr.h> |
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18 #include "usbmscfileshared.h" |
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19 #include "mscfileserver.h" |
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20 #include "mscfilesession.h" |
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21 #include "mscfileserversecuritypolicy.h" |
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22 #include "mscfilecontroller.h" |
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23 #include "debug.h" |
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24 |
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25 /** |
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26 Constructs a USB mass storage Server |
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27 |
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28 @return a pointer to CMscFileServer object |
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29 */ |
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30 CMscFileServer* CMscFileServer::NewLC() |
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31 { |
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32 CMscFileServer* r = new (ELeave) CMscFileServer(); |
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33 CleanupStack::PushL(r); |
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34 r->ConstructL(); |
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35 return r; |
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36 } |
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37 |
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38 /** |
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39 Destructor |
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40 */ |
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41 CMscFileServer::~CMscFileServer() |
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42 { |
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43 TRACE_FUNC |
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44 |
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45 delete iController; |
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46 } |
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47 |
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48 /** |
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49 Constructor |
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50 |
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51 @param aController a USB mass storage controller reference |
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52 */ |
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53 CMscFileServer::CMscFileServer() |
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54 : CPolicyServer(EPriorityHigh, KMscFileServerPolicy) |
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55 { |
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56 } |
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57 |
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58 void CMscFileServer::ConstructL() |
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59 { |
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60 TRACE_FUNC |
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61 |
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62 StartL( KMscFileServerName ); |
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63 |
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64 iController = CMscFileController::NewL(); |
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65 } |
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66 /** |
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67 Create a new session on this server |
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68 |
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69 @param &aVersion Version of client |
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70 @return A pointer to a session object to be used for the client |
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71 */ |
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72 CSession2* CMscFileServer::NewSessionL(const TVersion &aVersion, const RMessage2& /*aMessage*/) const |
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73 { |
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74 TRACE_FUNC |
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75 TVersion v( KUsbMsSrvMajorVersionNumber, |
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76 KUsbMsSrvMinorVersionNumber, |
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77 KUsbMsSrvBuildVersionNumber ); |
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78 |
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79 if ( !User::QueryVersionSupported( v, aVersion ) ) |
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80 { |
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81 User::Leave( KErrNotSupported ); |
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82 } |
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83 |
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84 CMscFileServer* ncThis = const_cast<CMscFileServer*>(this); |
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85 CMscFileSession* sess = CMscFileSession::NewL(*ncThis); |
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86 return sess; |
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87 } |
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88 |
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89 |
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90 /** |
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91 Inform the client there has been an error. |
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92 |
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93 @param aError The error that has occurred |
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94 */ |
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95 void CMscFileServer::Error(TInt aError) |
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96 { |
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97 TRACE_STATE(( _L("!! CMscFileServer::Error( %d )"), aError )) |
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98 |
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99 Message().Complete(aError); |
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100 ReStart(); |
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101 } |
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102 |
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103 /** |
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104 Increment the open session count (iSessionCount) by one. |
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105 |
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106 @post the number of open sessions is incremented by one |
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107 */ |
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108 void CMscFileServer::IncrementSessionCount() |
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109 { |
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110 TRACE_STATE(( _L(">< CMscFileServer::IncrementSessionCount( %d )"), iSessionCount )) |
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111 __ASSERT_DEBUG(iSessionCount >= 0, User::Panic(KUsbMsSvrPncCat, EUsbMsPanicIllegalIPC)); |
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112 |
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113 ++iSessionCount; |
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114 } |
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115 |
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116 /** |
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117 Decrement the open session count (iSessionCount) by one. |
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118 |
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119 @post the number of open sessions is decremented by one |
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120 */ |
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121 void CMscFileServer::DecrementSessionCount() |
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122 { |
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123 TRACE_STATE(( _L(">< CMscFileServer::DecrementSessionCount( %d )"), iSessionCount )) |
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124 __ASSERT_DEBUG(iSessionCount > 0, User::Panic(KUsbMsSvrPncCat, EUsbMsPanicIllegalIPC)); |
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125 |
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126 --iSessionCount; |
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127 } |
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128 |
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129 void CMscFileServer::ThreadFunctionL() |
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130 { |
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131 TRACE_FUNC_ENTRY |
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132 |
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133 // Naming the server thread after the server helps to debug panics |
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134 User::LeaveIfError( User::RenameThread( KMscFileServerName ) ); |
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135 |
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136 // Construct active scheduler |
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137 CActiveScheduler* activeScheduler = new ( ELeave ) CActiveScheduler; |
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138 CleanupStack::PushL( activeScheduler ) ; |
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139 |
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140 // Install active scheduler |
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141 // We don't need to check whether an active scheduler is already installed |
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142 // as this is a new thread, so there won't be one |
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143 CActiveScheduler::Install( activeScheduler ); |
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144 |
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145 // Construct our server |
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146 CMscFileServer::NewLC(); // Anonymous |
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147 |
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148 RProcess::Rendezvous( KErrNone ); |
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149 |
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150 // Start handling requests |
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151 CActiveScheduler::Start(); |
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152 |
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153 //===== thread stopped ===== |
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154 TRACE_INFO(( _L( " MscFileServer thread stopped" ) )) |
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155 CleanupStack::PopAndDestroy( 2, activeScheduler ); // Anonymous CMscFileServer |
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156 |
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157 TRACE_FUNC_EXIT |
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158 } |
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159 |
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160 |
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161 TInt CMscFileServer::ThreadFunction( TAny* /*aNone*/ ) |
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162 { |
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163 TRACE_FUNC_ENTRY |
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164 CTrapCleanup* cleanupStack = CTrapCleanup::New(); |
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165 if ( !cleanupStack ) |
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166 { |
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167 RThread::Rendezvous( KErrNoMemory ); |
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168 } |
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169 |
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170 TRAPD( err, ThreadFunctionL() ) |
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171 if ( err != KErrNone ) |
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172 { |
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173 TRACE_ERROR(( _L( "*** Error! Thread leaves w/ %d ***" ), err )) |
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174 RThread::Rendezvous( KErrNoMemory ); |
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175 } |
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176 |
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177 delete cleanupStack; |
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178 cleanupStack = NULL; |
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179 |
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180 TRACE_FUNC_EXIT |
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181 return KErrNone; |
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182 } |
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183 |
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184 |
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185 TInt E32Main() |
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186 { |
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187 return CMscFileServer::ThreadFunction( NULL ); |
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188 } |
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189 |
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190 |
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