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1 /* |
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2 * Copyright (c) 2008-2010 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 the License "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: |
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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 /** |
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20 @file |
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21 @released |
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22 @internalTechnology |
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23 */ |
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24 |
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25 #include "operationfunctions.h" |
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26 #include "integritytree.h" |
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27 #include "usiflog.h" |
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28 |
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29 namespace Usif |
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30 { |
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31 |
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32 TBool IsBinary(const TEntry& aEntry) |
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33 { |
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34 return (aEntry[0].iUid == KExecutableImageUidValue || aEntry[0].iUid == KDynamicLibraryUidValue) ? ETrue : EFalse; |
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35 } |
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36 |
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37 |
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38 void VerifyDeletionErrorL(TInt err) |
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39 { |
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40 if (err != KErrNone && err != KErrNotFound && err != KErrPathNotFound) |
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41 User::Leave(err); |
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42 } |
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43 |
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44 void IntegrityDeleteFileL(const TDesC& aPath, CIntegrityTreeLeaf* aLeaf, RFs& aFs, |
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45 RLoader& aLoader, CFileMan& aFileMan) |
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46 { |
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47 _LIT(KSysBin, "\\sys\\bin"); |
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48 RBuf name; |
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49 name.CreateL(aPath, KMaxFileName); |
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50 CleanupClosePushL(name); |
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51 name.Append(aLeaf->Name()); |
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52 |
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53 TEntry entry; |
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54 TInt err = aFs.Entry(name, entry); |
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55 if (err == KErrNone) |
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56 { |
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57 aFs.SetAtt(name, 0, KEntryAttReadOnly); |
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58 if(entry.IsDir()) |
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59 { |
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60 // Make sure to append slash before calling RmDir - otherwise it deletes the parent directory |
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61 if (name[name.Length()-1] != KPathDelimiter) |
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62 { |
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63 name.Append(KPathDelimiter); |
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64 } |
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65 User::LeaveIfError(aFileMan.RmDir(name)); |
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66 } |
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67 else |
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68 { |
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69 if ( aLeaf->Type() == EBackupFile ) // Implies a commit operation is in progress |
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70 { |
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71 |
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72 if ( IsBinary(entry) ) |
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73 { |
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74 // Forming the file name so the renamed file can be under sys/bin |
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75 // for special delete mechanism using RLoader::Delete |
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76 RBuf tmpName; |
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77 TParsePtrC fileName(name); |
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78 tmpName.CreateL(name.Length() + KSysBin.iTypeLength); |
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79 CleanupClosePushL(tmpName); |
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80 |
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81 tmpName.Append(fileName.Drive()); |
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82 tmpName.Append(KSysBin); |
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83 tmpName.Append(fileName.Path()); |
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84 tmpName.Append(fileName.NameAndExt()); |
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85 |
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86 DEBUG_PRINTF3(_L("Integrity Services - Renaming %S to %S"), &name, &tmpName); |
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87 aFileMan.Rename(name,tmpName,CFileMan::EOverWrite); |
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88 User::LeaveIfError(aLoader.Delete(tmpName)); // Using RLoader delete for paged binaries |
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89 DEBUG_PRINTF2(_L("Integrity Services - Deleted renamed file %S"), &tmpName); |
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90 |
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91 // prune the directory tree if possible |
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92 RemoveDirectoryTreeL(aFs, tmpName); |
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93 CleanupStack::PopAndDestroy(&tmpName); |
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94 } |
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95 else |
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96 { |
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97 User::LeaveIfError(aFileMan.Delete(name)); |
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98 } |
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99 } |
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100 else |
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101 { |
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102 // Need to use RLoader Delete which can be used during deletion of Added files during Rollback |
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103 User::LeaveIfError(aLoader.Delete(name)); |
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104 } |
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105 } |
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106 |
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107 // prune the directory tree if possible |
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108 RemoveDirectoryTreeL(aFs, name); |
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109 } |
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110 else if(err != KErrNotFound && err != KErrPathNotFound) |
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111 { |
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112 DEBUG_PRINTF3(_L("Integrity Services - error %d removing %S"), err, &name); |
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113 User::Leave(err); |
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114 } |
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115 else |
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116 { |
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117 |
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118 DEBUG_PRINTF3(_L("Integrity Services - error %d removing %S"), err, &name); |
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119 |
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120 // Check for any renamed files to move it to sys/bin for special delete mechanism |
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121 RBuf tmpName; |
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122 TParsePtrC fileName(name); |
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123 tmpName.CreateL(name.Length() + KSysBin.iTypeLength); |
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124 CleanupClosePushL(tmpName); |
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125 |
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126 tmpName.Append(fileName.Drive()); |
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127 tmpName.Append(KSysBin); |
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128 tmpName.Append(fileName.Path()); |
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129 tmpName.Append(fileName.NameAndExt()); |
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130 DEBUG_PRINTF2(_L("Integrity Services - Removing %S renamed binary files if any"), &tmpName); |
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131 |
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132 aLoader.Delete(tmpName); |
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133 // prune the directory tree if possible |
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134 RemoveDirectoryTreeL(aFs, tmpName); |
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135 CleanupStack::PopAndDestroy(&tmpName); |
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136 } |
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137 |
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138 CleanupStack::PopAndDestroy(&name); |
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139 } |
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140 |
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141 void IntegrityRestoreFileL(const TDesC& aPath, CIntegrityTreeLeaf* aLeaf, RFs& aFs, |
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142 RLoader& /*aLoader*/, CFileMan& /*aFileMan*/) |
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143 { |
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144 RBuf name; |
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145 name.CreateL(aPath, KMaxFileName); |
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146 CleanupClosePushL(name); |
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147 name.Append(aLeaf->Name()); |
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148 |
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149 // find the peer file, and check it's a backup. |
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150 CIntegrityTreeLeaf* peer = aLeaf->Peer(); |
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151 if (peer->Type() != EBackupFile) |
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152 { |
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153 User::Leave(KErrCorrupt); |
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154 } |
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155 |
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156 TParsePtrC parse(peer->Journal()); |
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157 RBuf backup; |
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158 backup.CreateL(parse.DriveAndPath(), KMaxFileName); |
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159 CleanupClosePushL(backup); |
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160 backup.Append(parse.Name()); |
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161 backup.Append(KPathDelimiter); |
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162 backup.Append(peer->Name()); |
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163 |
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164 TInt err = aFs.MkDirAll(name); |
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165 if(err != KErrNone && err != KErrAlreadyExists) |
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166 { |
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167 User::Leave(err); |
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168 } |
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169 |
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170 err = aFs.Rename(backup, name); |
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171 if (err != KErrNone) |
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172 { |
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173 VerifyDeletionErrorL(err); |
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174 // we may have already moved it back during a previous recovery |
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175 // attempt, check for its presence in the original location |
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176 TEntry restoredEntry; |
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177 User::LeaveIfError(aFs.Entry(name, restoredEntry)); |
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178 } |
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179 else |
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180 { |
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181 // prune the backup directory tree if possible. |
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182 RemoveDirectoryTreeL(aFs, backup); |
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183 } |
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184 CleanupStack::PopAndDestroy(2, &name); // backup |
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185 } |
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186 |
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187 void RemoveDirectoryTreeL(RFs& aFs, const TDesC& aFileName) |
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188 { |
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189 TParse directory; |
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190 User::LeaveIfError(directory.SetNoWild(aFileName, NULL, NULL)); |
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191 while(!directory.IsRoot()) |
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192 { |
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193 // try to remove this directory |
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194 TInt err = aFs.RmDir(directory.DriveAndPath()); |
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195 if(err == KErrInUse || err == KErrAccessDenied) |
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196 { |
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197 break; |
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198 } |
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199 VerifyDeletionErrorL(err); |
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200 // move to deleted directory's parent |
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201 User::LeaveIfError(directory.PopDir()); |
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202 } |
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203 } |
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204 |
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205 } // end namespace Usif |