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1 // Copyright (c) 2005-2009 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: |
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14 // |
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15 |
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16 #include "DllStarter.h" |
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17 #include <f32file.h> |
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18 #include "SystemStartupDllInfo.h" |
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19 #include "SysStartDebug.h" |
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20 #include "SysStartDefs.h" |
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21 |
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22 #include "sysstartpanic.h" |
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23 #include "restartsys.h" |
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24 |
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25 |
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26 // |
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27 // Standard Symbian factory functions/destructor |
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28 // |
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29 |
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30 CDllStarter* CDllStarter::NewL(const CSystemStartupDllInfo* aDllInfo ) |
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31 { |
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32 CDllStarter* self = CDllStarter::NewLC(aDllInfo ); |
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33 CleanupStack::Pop(self); |
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34 return self; |
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35 } |
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36 |
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37 CDllStarter* CDllStarter::NewLC(const CSystemStartupDllInfo* aDllInfo ) |
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38 { |
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39 CDllStarter* self = new (ELeave) CDllStarter(aDllInfo ); |
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40 CleanupStack::PushL(self); |
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41 return self; |
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42 } |
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43 |
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44 CDllStarter::~CDllStarter() |
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45 { |
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46 delete iDllInfo; |
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47 } |
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48 |
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49 CDllStarter::CDllStarter(const CSystemStartupDllInfo* aDllInfo ): |
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50 iDllInfo(aDllInfo) |
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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 // |
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56 // Public member functions |
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57 // |
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58 |
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59 /** Implementation of MStartupCommand interface. |
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60 This function retrieves the DLL name and ordinal number from its |
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61 CSystemStartupDllInfo data member. It attempts to load the DLL |
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62 and call the specified function. |
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63 |
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64 @see MStartupCommand. |
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65 */ |
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66 void CDllStarter::Execute(TRequestStatus& aStatus) |
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67 { |
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68 aStatus = KRequestPending; |
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69 DEBUGPRINT1(_L("SysStart: CDllStarter::Execute")); |
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70 |
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71 // Find the name of the DLL to be loaded from the information |
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72 // already retrieved from the SSC file. |
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73 TFileName dllName =iDllInfo->DllName(); |
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74 _LIT(KExtension, ".dll"); |
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75 dllName.Append(KExtension); |
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76 |
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77 // Initialise variables |
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78 _LIT(KSysBin, "z:\\sys\\bin\\"); |
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79 RLibrary lib; |
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80 TInt err = KErrGeneral; |
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81 TBool dllLoaded = EFalse; |
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82 |
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83 TUint8 ordinal = iDllInfo->Ordinal(); |
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84 |
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85 // The DLL may not be found or the DLL function may return an error |
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86 // code. The number of times to re-attempt is specified in the SSC file. |
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87 TInt attemptsRequired = iDllInfo->NoOfRetries() + 1; |
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88 |
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89 while ((err != KErrNone) && (attemptsRequired-- >0)) |
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90 { |
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91 // Search for and load the DLL. |
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92 if ((err = lib.Load(dllName, KSysBin)) == KErrNone) |
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93 { |
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94 DEBUGPRINT2(_L("SysStart: dll loaded - %S"), &dllName); |
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95 dllLoaded = ETrue; |
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96 } |
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97 else |
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98 { |
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99 DEBUGPRINT3(_L("SysStart: Unable to load DLL - %S, error - %d"), &dllName, err); |
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100 } |
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101 |
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102 // Call the function in the Dll |
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103 if (dllLoaded) |
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104 { |
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105 // Identify the function to be called according to the ordinal |
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106 // number specified in the SSC file. |
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107 TLibraryFunction ordinalfunction = lib.Lookup(ordinal); |
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108 |
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109 if (ordinalfunction != NULL) |
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110 { |
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111 Dllfunctiontype getDllFunction = reinterpret_cast<Dllfunctiontype>(ordinalfunction); |
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112 DEBUGPRINT2(_L("SysStart: Calling function at ordinal %d."), ordinal); |
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113 err = (*getDllFunction)(iDllInfo->DllBuffer()); |
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114 } |
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115 else |
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116 { |
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117 DEBUGPRINT2(_L("Sysstart: No function at specified ordinal %d"), ordinal); |
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118 err = KErrNotFound; |
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119 // No function exists at the ordinal specified so |
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120 // there is no point in re-attempting execution. |
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121 attemptsRequired = 0; |
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122 } |
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123 } |
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124 } |
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125 |
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126 |
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127 // Take action on error condition |
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128 if (err != KErrNone) |
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129 { |
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130 // Check required behaviour on failure specified in SSC |
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131 if (iDllInfo->FailOnError()) |
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132 { |
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133 err = RestartSys::RestartSystem(); |
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134 if (KErrNone != err) |
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135 { |
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136 DEBUGPRINT2(_L("Sysstart: Restart System Call failed with error %d"), err); |
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137 PanicNow(KPanicDllStarter, ERestartSystemCallFailed); |
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138 } |
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139 User::After(5000000); // required by RestartSys API, see comments in RestartSys::RestartSystem() |
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140 } |
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141 } |
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142 |
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143 lib.Close(); |
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144 |
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145 TRequestStatus* requestStatus = &aStatus; |
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146 User::RequestComplete(requestStatus, err); |
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147 } |
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148 |
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149 void CDllStarter::Release() |
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150 { |
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151 delete this; |
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152 } |