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1 /* |
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2 * Copyright (c) 2008-2009 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 |
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27 #include "integritytree.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 void VerifyDeletionErrorL(TInt err) |
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33 { |
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34 if (err != KErrNone && err != KErrNotFound && err != KErrPathNotFound) |
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35 User::Leave(err); |
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36 } |
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37 |
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38 void IntegrityDeleteFileL(const TDesC& aPath, CIntegrityTreeLeaf* aLeaf, RFs& aFs, |
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39 RLoader& aLoader, CFileMan& aFileMan) |
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40 { |
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41 RBuf name; |
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42 name.CreateL(aPath, KMaxFileName); |
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43 CleanupClosePushL(name); |
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44 name.Append(aLeaf->Name()); |
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45 |
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46 TEntry entry; |
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47 TInt err = aFs.Entry(name, entry); |
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48 if (err == KErrNone) |
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49 { |
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50 aFs.SetAtt(name, 0, KEntryAttReadOnly); |
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51 if(entry.IsDir()) |
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52 { |
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53 // Make sure to append slash before calling RmDir - otherwise it deletes the parent directory |
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54 if (name[name.Length()-1] != KPathDelimiter) |
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55 { |
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56 name.Append(KPathDelimiter); |
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57 } |
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58 User::LeaveIfError(aFileMan.RmDir(name)); |
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59 } |
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60 else |
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61 { |
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62 User::LeaveIfError(aLoader.Delete(name)); |
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63 } |
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64 |
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65 // prune the directory tree if possible |
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66 RemoveDirectoryTreeL(aFs, name); |
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67 } |
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68 else |
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69 { |
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70 VerifyDeletionErrorL(err); |
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71 } |
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72 CleanupStack::PopAndDestroy(&name); |
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73 } |
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74 |
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75 void IntegrityRestoreFileL(const TDesC& aPath, CIntegrityTreeLeaf* aLeaf, RFs& aFs, |
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76 RLoader& /*aLoader*/, CFileMan& /*aFileMan*/) |
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77 { |
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78 RBuf name; |
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79 name.CreateL(aPath, KMaxFileName); |
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80 CleanupClosePushL(name); |
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81 name.Append(aLeaf->Name()); |
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82 |
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83 // find the peer file, and check it's a backup. |
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84 CIntegrityTreeLeaf* peer = aLeaf->Peer(); |
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85 if (peer->Type() != EBackupFile) |
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86 { |
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87 User::Leave(KErrCorrupt); |
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88 } |
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89 |
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90 TParsePtrC parse(peer->Journal()); |
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91 RBuf backup; |
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92 backup.CreateL(parse.DriveAndPath(), KMaxFileName); |
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93 CleanupClosePushL(backup); |
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94 backup.Append(parse.Name()); |
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95 backup.Append(KPathDelimiter); |
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96 backup.Append(peer->Name()); |
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97 |
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98 TInt err = aFs.MkDirAll(name); |
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99 if(err != KErrNone && err != KErrAlreadyExists) |
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100 { |
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101 User::Leave(err); |
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102 } |
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103 |
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104 err = aFs.Rename(backup, name); |
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105 if (err != KErrNone) |
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106 { |
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107 VerifyDeletionErrorL(err); |
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108 // we may have already moved it back during a previous recovery |
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109 // attempt, check for its presence in the original location |
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110 TEntry restoredEntry; |
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111 User::LeaveIfError(aFs.Entry(name, restoredEntry)); |
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112 } |
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113 else |
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114 { |
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115 // prune the backup directory tree if possible. |
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116 RemoveDirectoryTreeL(aFs, backup); |
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117 } |
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118 CleanupStack::PopAndDestroy(2, &name); // backup |
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119 } |
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120 |
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121 void RemoveDirectoryTreeL(RFs& aFs, const TDesC& aFileName) |
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122 { |
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123 TParse directory; |
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124 User::LeaveIfError(directory.SetNoWild(aFileName, NULL, NULL)); |
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125 while(!directory.IsRoot()) |
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126 { |
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127 // try to remove this directory |
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128 TInt err = aFs.RmDir(directory.DriveAndPath()); |
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129 if(err == KErrInUse || err == KErrAccessDenied) |
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130 { |
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131 break; |
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132 } |
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133 VerifyDeletionErrorL(err); |
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134 // move to deleted directory's parent |
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135 User::LeaveIfError(directory.PopDir()); |
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136 } |
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137 } |
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138 |
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139 } // end namespace Usif |