author | hgs |
Wed, 13 Oct 2010 19:39:18 +0530 | |
changeset 71 | 28ccaba883f4 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Handle a table of CFileDescBase pointers |
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// |
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// |
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|
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#include "SYSIF.H" |
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#include "FDESC.H" |
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#include "LTIME.H" |
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#include "LPOSIX.H" |
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#include <fcntl.h> |
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#include <sys/errno.h> |
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|
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#define RESERVED(i) ((CFileDescBase*)((i)+1)) |
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|
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const TInt MINFILES = 8; |
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|
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CFileTable::CFileTable() : iFids(MINFILES) |
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{ |
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} |
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|
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void CFileTable::InitL() |
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{ |
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CFileDescBase* ptr=0; |
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iFids.InsertL(0, ptr, 8); // set up the first 8 entries with zero |
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} |
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|
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CFileTable::~CFileTable() |
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{ |
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Close(); |
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} |
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|
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void CFileTable::Close() |
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{ |
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for (TInt aFid=0; aFid<iFids.Count(); aFid++) |
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{ |
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if (iFids[aFid]!=0 && iFids[aFid]!=RESERVED(aFid)) |
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{ |
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iFids[aFid]->RecvFromCancel(); |
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iFids[aFid]->Close(); |
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} |
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Release(aFid); |
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} |
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} |
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|
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void CFileTable::Release(TInt aFid) |
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{ |
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iFids[aFid]=0; |
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if (aFid<MINFILES || aFid<iFids.Count()-1) |
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return; |
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// opportunity to shrink the array |
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while (aFid>=MINFILES && iFids[aFid]==0) |
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{ |
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iFids.Delete(aFid); |
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aFid--; |
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} |
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iFids.Compress(); |
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} |
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|
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void CFileTable::Default(CFileDescBase* aConsole) |
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{ |
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if (iFids[0]==0) |
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iFids[0]=aConsole->Dup(); |
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if (iFids[1]==0) |
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iFids[1]=aConsole->Dup(); |
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if (iFids[2]==0) |
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iFids[2]=aConsole->Dup(); |
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} |
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|
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TInt CFileTable::Attach(TInt aFid, CFileDescBase* aFile) |
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{ |
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if (aFid<0 || aFid>=iFids.Count() || (iFids[aFid] != 0 && iFids[aFid]!=RESERVED(aFid))) |
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return KErrArgument; |
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iFids[aFid]=aFile; |
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return KErrNone; |
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87 |
} |
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88 |
|
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TInt CFileTable::Reserve() |
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90 |
{ |
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TInt aFid=0; |
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TInt err=KErrNone; |
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for (aFid=0; aFid<iFids.Count(); aFid++) |
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if (iFids[aFid]==0) |
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goto success; |
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TRAP(err,iFids.ExtendL()); |
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if (err!=KErrNone) |
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return err; |
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aFid=iFids.Count()-1; |
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100 |
|
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101 |
success: |
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iFids[aFid]=RESERVED(aFid); |
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103 |
return aFid; |
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104 |
} |
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105 |
|
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106 |
TInt CFileTable::Reserve(int aFids[3]) |
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107 |
{ |
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108 |
TInt i=0; |
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109 |
for (i=0; i<3; i++) |
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110 |
{ |
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if (aFids[i]==-1) |
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112 |
{ |
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TInt fd=Reserve(); |
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if (fd<0) |
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115 |
{ |
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Detach(aFids); // release the ones we did get |
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return KErrInUse; |
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} |
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aFids[i]=fd; |
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120 |
} |
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121 |
} |
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122 |
return KErrNone; |
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123 |
} |
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124 |
|
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TInt CFileTable::Detach(int aFids[3]) |
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126 |
{ |
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127 |
TInt i=0; |
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128 |
for (i=0; i<3; i++) |
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129 |
{ |
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if (aFids[i]>=0) |
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Attach(aFids[i],0); |
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} |
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133 |
return KErrInUse; |
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134 |
} |
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135 |
|
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136 |
TInt CFileTable::Detach(TInt aFid, CFileDescBase*& aDetached) |
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137 |
{ |
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if (aFid<0 || aFid>=iFids.Count()) |
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139 |
return KErrArgument; |
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aDetached=iFids[aFid]; |
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Release(aFid); |
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142 |
return KErrNone; |
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143 |
} |
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144 |
|
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TInt CFileTable::At(TInt aFid, CFileDescBase*& aFound) const |
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146 |
{ |
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if (aFid<0 || aFid>=iFids.Count()) |
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148 |
return KErrArgument; |
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aFound=iFids[aFid]; |
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if (aFound==0) |
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151 |
return KErrNotFound; |
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152 |
return KErrNone; |
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153 |
} |
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154 |
|
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155 |
TInt CFileTable::Dup(TInt& aFid) |
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156 |
{ |
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if (aFid<0 || aFid>=iFids.Count()) |
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158 |
return KErrArgument; |
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CFileDescBase* fdesc=iFids[aFid]; |
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if (fdesc==0) |
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161 |
return KErrNotFound; |
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TInt aFid2=0; |
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for (aFid2=0; aFid2<iFids.Count(); aFid2++) |
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if (iFids[aFid2]==0) |
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165 |
{ |
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iFids[aFid2]=fdesc->Dup(); |
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aFid=aFid2; |
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168 |
return KErrNone; |
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169 |
} |
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170 |
return KErrInUse; |
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171 |
} |
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|
172 |
|
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173 |
TInt CFileTable::Dup2(TInt aFid, TInt aFid2) |
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|
174 |
{ |
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175 |
if (aFid<0 || aFid>=iFids.Count() || aFid2<0 || aFid2>=iFids.Count() || aFid==aFid2) |
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176 |
return KErrArgument; |
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CFileDescBase* fdesc=iFids[aFid]; |
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if (fdesc==0) |
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179 |
return KErrNotFound; |
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CFileDescBase* old=iFids[aFid2]; |
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iFids[aFid2]=fdesc->Dup(); |
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182 |
if (old) |
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183 |
old->Close(); |
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184 |
return KErrNone; |
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185 |
} |
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|
186 |
|
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187 |
// Simple synchronous services |
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188 |
|
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189 |
int CFileTable::dup (int fid, int& anErrno) |
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190 |
{ |
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191 |
TInt ret=Dup(fid); |
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192 |
if (ret==KErrNone) |
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193 |
return fid; |
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194 |
return MapError(ret,anErrno); |
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195 |
} |
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|
196 |
|
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197 |
int CFileTable::dup2 (int fid, int fid2, int& anErrno) |
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198 |
{ |
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199 |
TInt err=Dup2(fid,fid2); |
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200 |
return MapError(err,anErrno); |
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|
201 |
} |
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|
202 |
|
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203 |
//int CFileTable::open (const char* name, int mode, int perms, int& anErrno, RFs& aFs) |
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204 |
//int CFileTable::open (const wchar_t* name, int mode, int perms, int& anErrno, RFs& aFs) |
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205 |
int CFileTable::open (const wchar_t* name, int mode, int perms, int& anErrno, RSessionBase& aFs) |
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206 |
{ |
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207 |
int fd=Reserve(); |
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208 |
TInt err=fd; |
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209 |
if (fd>=0) |
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210 |
{ |
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|
211 |
//coverity[alloc_fn] |
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212 |
//coverity[var_assign] |
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|
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CFileDescBase *f=CFileDescBase::Open(aFs,name,mode,perms,err); |
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|
214 |
if (!err) |
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|
215 |
{ |
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|
216 |
err=Attach(fd,f); |
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|
217 |
if (!err) |
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|
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return fd; |
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|
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delete f; |
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220 |
} |
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|
221 |
Attach(fd,0); // cancel the reservation |
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|
222 |
//coverity[leaked_storage] |
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|
223 |
} |
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|
224 |
return MapError(err,anErrno); |
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225 |
} |
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|
226 |
|
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|
227 |
int CFileTable::socket (int family, int style, int protocol, int& anErrno, RSocketServ& aSs) |
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|
228 |
{ |
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int fd=Reserve(); |
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TInt err=fd; |
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if (fd>=0) |
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|
232 |
{ |
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233 |
CFileDescBase *f=CFileDescBase::Socket(aSs,family,style,protocol,err); |
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|
234 |
if (!err) |
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|
235 |
{ |
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|
236 |
CleanupStack::PushL(f); |
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|
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err=Attach(fd,f); |
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|
238 |
CleanupStack::PopAndDestroy(f); |
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|
239 |
|
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|
240 |
if (!err) |
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|
241 |
{ |
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242 |
return fd; |
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243 |
} |
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|
244 |
|
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|
245 |
} |
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|
246 |
|
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|
247 |
Attach(fd,0); // cancel the reservation |
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|
248 |
} |
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|
249 |
|
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|
250 |
return MapError(err,anErrno); |
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|
251 |
} |
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|
252 |
|
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|
253 |
int CFileTable::userclose(int fid, int& anErrno) |
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|
254 |
{ |
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|
255 |
CFileDescBase *f=0; |
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|
256 |
TInt err=At(fid,f); |
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|
257 |
if (!err) |
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|
258 |
{ |
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|
259 |
f->UserClose(); |
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|
260 |
close(fid, anErrno); |
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|
261 |
} |
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|
262 |
else |
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|
263 |
{ |
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|
264 |
if (KErrNotFound == err) |
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|
265 |
err = EBADF; |
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|
266 |
} |
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|
267 |
return MapError(err,anErrno); |
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|
268 |
} |
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|
269 |
|
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|
270 |
int CFileTable::close (int fid, int& anErrno) |
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|
271 |
{ |
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|
272 |
CFileDescBase *f=0; |
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|
273 |
TInt err=Detach(fid,f); |
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|
274 |
if (!err) |
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|
275 |
{ |
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|
276 |
if (f==0) |
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|
277 |
{ |
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|
278 |
err=EBADF; |
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|
279 |
} |
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|
280 |
else |
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|
281 |
{ |
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|
282 |
f->RecvFromCancel(); |
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|
283 |
err=f->Close(); |
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|
284 |
} |
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|
285 |
} |
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|
286 |
return MapError(err,anErrno); |
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|
287 |
} |
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|
288 |
|
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|
289 |
|
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|
290 |
|
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|
291 |
int CFileTable::lseek (int fid, int offset, int whence, int& anErrno) |
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|
292 |
{ |
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|
293 |
CFileDescBase *f=0; |
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|
294 |
TInt err=At(fid,f); |
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|
295 |
if (!err) |
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|
296 |
{ |
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|
297 |
err=f->LSeek(offset, whence); |
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|
298 |
if (err==KErrNone) |
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|
299 |
return offset; |
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|
300 |
} |
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Revision: 201002
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|
301 |
return MapError(err,anErrno); |
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|
302 |
} |
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Revision: 201002
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parents:
diff
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|
303 |
|
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Revision: 201002
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|
304 |
int CFileTable::fstat (int fid, struct stat *st, int& anErrno) |
e4d67989cc36
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|
305 |
{ |
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Revision: 201002
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|
306 |
CFileDescBase *f=0; |
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Revision: 201002
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|
307 |
TInt err=At(fid,f); |
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Revision: 201002
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|
308 |
if (!err) |
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Revision: 201002
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|
309 |
err=f->FStat(st); |
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Revision: 201002
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|
310 |
return MapError(err,anErrno); |
e4d67989cc36
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parents:
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|
311 |
} |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
312 |
|
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Revision: 201002
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parents:
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|
313 |
int CFileTable::listen (int fid, int n, int& anErrno) |
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Revision: 201002
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|
314 |
{ |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
315 |
CFileDescBase *f=0; |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
316 |
TInt err=At(fid,f); |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
317 |
if (!err) |
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Revision: 201002
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parents:
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|
318 |
err=f->Listen(n); |
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return MapError(err,anErrno); |
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} |
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|
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int CFileTable::bind (int fid, TSockAddr& address, int& anErrno) |
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{ |
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CFileDescBase *f=0; |
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TInt err=At(fid,f); |
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if (!err) |
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err=f->Bind(address); |
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return MapError(err,anErrno); |
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} |
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|
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int CFileTable::sockname (int fid, TSockAddr& address, int anEnd, int& anErrno) |
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{ |
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CFileDescBase *f=0; |
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TInt err=At(fid,f); |
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if (!err) |
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err=f->SockName(anEnd, address); |
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return MapError(err,anErrno); |
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} |
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|
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int CFileTable::getsockopt (int fid, int level, int opt, void* buf, unsigned long* len, int& anErrno) |
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{ |
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CFileDescBase *f=0; |
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TInt err=At(fid,f); |
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if (!err) |
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{ |
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TPtr8 ptr((TText8 *)buf, *len, *len); |
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err=f->GetSockOpt(opt,level,ptr); |
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if (err==0) |
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*len=ptr.Length(); |
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} |
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return MapError(err,anErrno); |
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} |
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|
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int CFileTable::setsockopt (int fid, int level, int opt, void* buf, unsigned long len, int& anErrno) |
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{ |
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CFileDescBase *f=0; |
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TInt err=At(fid,f); |
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if (err==KErrNone) |
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{ |
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//Negative option is not supported and have not been implemented yet |
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//anErrno is then mapped to ENOSYS(88) (function not implemented yet) |
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if (opt<=0) |
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return MapError(KErrNotSupported,anErrno); |
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TPtrC8 ptr((TText8 *)buf, len); |
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err=f->SetSockOpt(opt,level,ptr); |
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} |
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return MapError(err,anErrno); |
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} |
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|
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int CFileTable::ioctlcomplete (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno) |
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{ |
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CFileDescBase *f=0; |
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TInt err=At(fid,f); |
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if (!err) |
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err=f->IoctlCompletion(cmd,param, aStatus.Int()); |
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return MapError(err,anErrno); |
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} |
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|
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int CFileTable::ioctlcancel (int fid, int& anErrno) |
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{ |
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CFileDescBase *f=0; |
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TInt err=At(fid,f); |
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if (!err) |
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f->IoctlCancel(); |
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return MapError(err,anErrno); |
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|
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} |
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|
387 |
|
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// Preparation for an Asynchronous service |
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// |
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// The CFileDescBase* should be Closed after completion: the use of Dup prevents other |
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// clients from invalidating the pointer during an asynchronous operation. |
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392 |
|
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TInt CFileTable::Asynch (int fid, CFileDescBase*& aFile) |
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|
394 |
{ |
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TInt err=At(fid,aFile); |
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if (!err) |
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aFile->Dup(); |
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return err; |
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399 |
} |
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|
400 |