/*
* Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
#include <fcntl.h>
#include <sys/errno.h>
#include <sys/serial.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <sys/syslimits.h>
#include <utf.h>
#include "sysreent.h"
#include <sys/socket.h>
#include <sys/un.h>
#include "sysif.h"
#include "fdesc.h"
#include "ltime.h"
#include "lposix.h"
#include "systemspecialfilercg.h"
#include "link.h"
#ifdef SYMBIAN_OE_POSIX_SIGNALS
#include <stdlib.h>
#include <signal.h>
#include "tsignalmessage.h"
#endif // SYMBIAN_OE_POSIX_SIGNALS
#ifdef SYMBIAN_OE_POSIX_SIGNALS
#define SIG_SIGNAL_PRESENT_IN_SIGSET(sig,set) ((set & (1ULL << (sig-1))) != 0x0000000000000000ULL)
#define SIG_ISEMPTY_SIGSET(set) (set == 0x0000000000000000ULL)
#define SIG_EMPTY_SIGSET(set) {set = 0x0000000000000000ULL;}
#define SIG_FILL_SIGSET(set) {set = 0xFFFFFFFFFFFFFFFFULL;}
#define SIG_ADD_SIGNAL_TO_SET(sig,set) {set |= (1ULL << (sig-1));}
#define SIG_REMOVE_SIGNAL_FROM_SET(sig,set) {set &= ~(1ULL << (sig-1));}
static void sig_exit();
const TUint KSignalPipeSize = 1024;
#endif
#ifdef __WINSCW__
#include <pls.h> // For emulator WSD API
const TUid KBackendUid3 = {0x102828D5};
#elif defined __X86GCC__
// GCC compiler generates an undefined reference error if static CLocalSystemInterface object is created in a local function. Therefore give it global scope on this platform.
CLocalSystemInterface TheBackend;
#elif defined __EPOC32__
//Globally declaring the CLSI object to overcome the DCLP implementation if given a static scope.
CLocalSystemInterface backend;
#endif
const TUint KConvertToMicroSecond = 1000000;
// Create static singleton backend object for the Process and return the same
EXPORT_C CLocalSystemInterface* Backend()
{
#ifdef __WINSCW__
// Access the PLS of this process
CLocalSystemInterface* backend = Pls<CLocalSystemInterface>(KBackendUid3);
return backend;
#elif defined __X86GCC__
return &TheBackend;
#else
return &backend;
#endif
}
// Construction of Backend Object which is going to be singleton object for the process
EXPORT_C CLocalSystemInterface::CLocalSystemInterface() : iOpenDirList(CLocalSystemInterface::KDirGran),
iTLDInfoList(CLocalSystemInterface::KTLDInfoListGran), iDefConnResurrect(ETrue), iDefConnPref(NULL)
{
#ifdef SYMBIAN_OE_POSIX_SIGNALS
iSignalsInitialized = EFalse;
iSigInitWaitCount = 0;
iSigInitWaitMutex.CreateLocal();
iSigInitWaitSemaphore.CreateLocal(0);
iBlockedSAMutex.CreateLocal();
iSignalWaiterMutex.CreateLocal();
iSignalInitSemaphore.CreateLocal(0);
#endif
//Create the Heap for all the libraries (local to this process)
const TInt KMaxHeapSize = 1048576 ; // 1MB
iPrivateHeap = UserHeap::ChunkHeap(NULL, KMinHeapSize, KMaxHeapSize);
if (!iPrivateHeap)
{
User::Panic(KEstlibInit, KErrNoMemory);
}
// Switch to the backend private heap
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
TInt err = iFids.Init(iPrivateHeap);
if ( !err )
{
CRedirDesc* redirMedia = new CRedirDesc();
if (redirMedia)
{
CStdErrDesc* errMedia = new CStdErrDesc();
if(errMedia)
{
iFids.Default(redirMedia, errMedia);
redirMedia->Close();
errMedia->Close();
}
else
{
iPrivateHeap->Free(redirMedia);
}
}
}
#if (defined SYMBIAN_OE_POSIX_SIGNALS && defined SYMBIAN_OE_LIBRT)
iTimerOverrunsMutex.CreateLocal(); //use backend heap
#endif
// Reset to the thread's default heap
User::SwitchHeap(oldHeap);
if (!err)
{
err=iFs.Connect();
if(!err)
{
err = iFs.ShareAuto();
}
}
if (!err)
{
err = PosixFilesystem::SetDefaultDir(iFs);
}
//Cache the session path to avoid querying RFs every time it is needed
if(err == KErrNone)
{
err = iFs.SessionPath(iSessionPath);
}
if(err == KErrNone)
{
//Create Server Locks
err |= iSSLock.CreateLocal();
err |= iCSLock.CreateLocal();
//Create TLDList Lock
err |= iTLDListLock.CreateLocal();
//Create the lock for Session Path
err |= iSessionPathLock.CreateLocal();
//Lock for protecting iASelectRequest across threads
err |= iASelectLock.CreateLocal();
//Protect the iDefConnection from concurrent GetDefaultConnection calls
err |= iDefConnLock.CreateLocal();
}
if(err == KErrNone)
{
err = iTzServer.Connect();
if(!err)
{
err = iTzServer.ShareAuto();
}
}
//Panic if any of the above operation returns with error
if (err)
{
User::Panic(KEstlibInit, err);
}
iCleanup.StorePtrs(iPrivateHeap, &iFs, &iSs, &iCs, &iSSLock, &iCSLock,&iDefConnLock,&iASelectLock);
}
EXPORT_C CLocalSystemInterface::~CLocalSystemInterface()
//
// Shut down all server connections in use
//
{
iTLDListLock.Close();
iSessionPathLock.Close();
//close the default RConnection
if(iDefConnection.SubSessionHandle() != 0)
{
iDefConnection.Close();
}
RHeap* oHeap = User::SwitchHeap(iPrivateHeap);
for (TInt i = 0, count = iTLDInfoList.Count(); i < count; i++ )
{
iTLDInfoList[i].Close(iPrivateHeap);
}
// close the RArray itself
iTLDInfoList.Close();
// Cleanup the threads serving aselect requests
int err;
// passing 1 to cancelaselect will kill all the threads serving aselect
cancelaselect(NULL,err,1);
// Close the array that maintains aselect request details
iASelectRequest.Close();
//close the RTz connection
iTzServer.Close();
if( iDefConnPref )
{
switch( iDefConnPref->ExtensionId() )
{
case TConnPref::EConnPrefSnap:
{
delete (TCommSnapPref*)iDefConnPref;
iDefConnPref = NULL;
}
break;
case TConnPref::EConnPrefCommDb:
{
delete (TCommDbConnPref*)iDefConnPref;
iDefConnPref = NULL;
}
break;
default:
{
// Unknown type of Connection Pref, do nothing
}
}
}
#if (defined SYMBIAN_OE_POSIX_SIGNALS && defined SYMBIAN_OE_LIBRT)
iTimerOverrunsMutex.Close();
iTimerOverruns.Close();
#endif
#if (defined SYMBIAN_OE_POSIX_SIGNALS)
iSigInitWaitMutex.Close();
iSigInitWaitSemaphore.Close();
iBlockedSAMutex.Close();
iSignalWaiterMutex.Close();
iSignalInitSemaphore.Close();
#endif
//close the RpointerArray
iOpenDirList.Close();
iSSLock.Close();
iCSLock.Close();
iSignalSession.Close();
iIpcS.Close();
User::SwitchHeap(oHeap);
}
#ifdef __SYMBIAN_COMPILE_UNUSED__
CLocalSystemInterface& CLocalSystemInterface::Clone()
{
return *this;
}
void CLocalSystemInterface::Release()
{
// nada. TODO: Remove this method
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::TerminateProcess
// Sends a message to Posix Server to Terminate itself!
// And delete the Process (self)
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::TerminateProcess(int status)
{
//delete this;
RProcess().Terminate(status);
}
#endif //__SYMBIAN_COMPILE_UNUSED__
// -----------------------------------------------------------------------------
// CLocalSystemInterface::Exit
// Close all the open FIDS,Terminate the process
//
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::Exit(int code)
{
#ifdef SYMBIAN_OE_POSIX_SIGNALS
if(iSignalsInitialized)
{
TRequestStatus status = KRequestPending;
iSignalHandlerThread.Logon(status);
iSignalLoopRunning = EFalse;
iSignalHandlerThread.RequestSignal();
User::WaitForRequest(status);
}
#endif
iFids.Close();
User::SetCritical(User::EProcessPermanent);
User::Exit(code);
}
// Simple layer over PosixFilesystem
wchar_t * CLocalSystemInterface::getcwd (wchar_t* buf, unsigned long len, int& anErrno)
{
return PosixFilesystem::getcwd(iFs, buf, len, anErrno);
}
int CLocalSystemInterface::chdir (const wchar_t* aPath, int& anErrno)
{
return PosixFilesystem::chdir(iFs, aPath, anErrno);
}
int CLocalSystemInterface::rmdir (const wchar_t* aPath, int& anErrno)
{
return PosixFilesystem::rmdir(iFs, aPath, anErrno);
}
int CLocalSystemInterface::mkdir (const wchar_t* aPath, int perms, int& anErrno)
{
return PosixFilesystem::mkdir(iFs, aPath, perms, anErrno);
}
int CLocalSystemInterface::stat (const wchar_t* name, struct stat *st, int& anErrno)
{
const wchar_t* filename = name;
// This needs to be zero terminated
TBuf<KMaxFileName> inputName;
TUint pathAtt = 0;
TInt err = GetFullFile(inputName,(const TText16*)name,iFs);
if( !err )
{
TInt err = iFs.Att(inputName,pathAtt);
if ( (err == KErrNone) && (pathAtt & KEntryAttDir) )
{
inputName.Append(_L("\\"));
}
filename = (wchar_t*)inputName.PtrZ();
}
TSpecialFileType fileType;
struct SLinkInfo enBuf;
// Check the type of file
fileType = _SystemSpecialFileBasedFilePath(filename, err, iFs);
// If it is a symbolic link, follow the link
// If _SystemSpecialFileBasedFilePath fails, treat it as normal file
// and try to proceed
if( fileType == EFileTypeSymLink && err == KErrNone )
{
err = _ReadSysSplFile(filename, (char*)&enBuf, sizeof(struct SLinkInfo), anErrno, iFs);
if (err == KErrNone)
{
filename = (wchar_t*)enBuf.iParentPath;
}
else
{
// errno is already set by _ReadSysSplFile
return -1;
}
}
else if ( fileType != EFileGeneralError && err != KErrNone )
{
return MapError(err,anErrno);
}
return PosixFilesystem::statbackend(iFs, filename, st, anErrno);
}
int CLocalSystemInterface::lstat (const wchar_t* name, struct stat *st, int& anErrno)
{
return PosixFilesystem::statbackend(iFs, name, st, anErrno);
}
int CLocalSystemInterface::utime (const wchar_t* name, const struct utimbuf *filetimes, int& anErrno)
{
return PosixFilesystem::utime(iFs, name, filetimes, anErrno);
}
int CLocalSystemInterface::chmod (const wchar_t* name, int perms, int& anErrno)
{
return PosixFilesystem::chmod(iFs, name, perms, anErrno);
}
int CLocalSystemInterface::rename (const wchar_t* oldname, const wchar_t* newname, int& anErrno)
{
return PosixFilesystem::rename(iFs, oldname, newname, anErrno);
}
EXPORT_C TInt CLocalSystemInterface::ResolvePath (TParse& aResult, const wchar_t* path, TDes* aFilename)
{
return PosixFilesystem::ResolvePath(aResult, path, aFilename);
}
// Simple layer over CFileTable synchronous routines
int CLocalSystemInterface::open (const wchar_t* name, int mode, int perms, int& anErrno)
{
return iFids.open(name,mode,perms,anErrno);
}
int CLocalSystemInterface::dup (int fid, int& anErrno)
{
return iFids.dup(fid,anErrno);
}
int CLocalSystemInterface::dup2 (int fid, int fid2, int& anErrno)
{
return iFids.dup2(fid,fid2,anErrno);
}
int CLocalSystemInterface::close (int fid, int& anErrno)
{
return iFids.UserClose(fid,anErrno);
}
off_t CLocalSystemInterface::lseek (int fid, off_t offset, int whence, int& anErrno)
{
return iFids.lseek(fid,offset,whence,anErrno);
}
int CLocalSystemInterface::fstat (int fid, struct stat *st, int& anErrno)
{
return iFids.fstat(fid,st,anErrno);
}
int CLocalSystemInterface::socket (int family, int style, int protocol, int& anErrno)
{
//Acquire the Lock before issuing a request to the server and release it later
iSSLock.Wait();
int retVal = iFids.socket(family,style,protocol,anErrno,iSs);
iSSLock.Signal();
return retVal;
}
int CLocalSystemInterface::listen (int fid, int n, int& anErrno)
{
return iFids.listen(fid,n,anErrno);
}
int CLocalSystemInterface::bind (int fid, const struct sockaddr* addr, unsigned long size, int& anErrno)
{
return iFids.bind(fid,addr,size,anErrno);
}
int CLocalSystemInterface::sockname (int fid, struct sockaddr* addr, unsigned long* size, int anEnd, int& anErrno)
{
return iFids.sockname(fid,addr,size,anEnd,anErrno);
}
int CLocalSystemInterface::getsockopt (int fid, int level, int opt, void* buf, unsigned long* len, int& anErrno)
{
return iFids.getsockopt(fid,level,opt,buf,len,anErrno);
}
int CLocalSystemInterface::setsockopt (int fid, int level, int opt, void* buf, unsigned long len, int& anErrno)
{
return iFids.setsockopt(fid,level,opt,buf,len,anErrno);
}
int CLocalSystemInterface::popen3 (const wchar_t* file, const wchar_t* cmd,
wchar_t** env, int fids[3], int& anErrno)
{
return iFids.popen3(file, cmd, env, fids, anErrno);
}
int CLocalSystemInterface::waitpid (int pid, int* status, int options, int& anErrno)
{
return iFids.waitpid(pid, status, options, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::popen
// Implementation for popen
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::popen (const wchar_t* file, const wchar_t* cmd,
const char* mode, int& anErrno)
{
return iFids.popen(file, cmd, mode, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::pclose
// Implementation for pclose
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::pclose (int aFid, int& anErrno)
{
return iFids.pclose(aFid, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::CheckOrigins
// Implementation for CheckPipe
// -----------------------------------------------------------------------------
//
EXPORT_C void CLocalSystemInterface::CheckOrigins (wchar_t**& wenvp, int& aCount)
{
//Acquire the Lock before issuing a request to the server and release it later
#ifdef SYMBIAN_OE_POSIX_SIGNALS
iFids.CheckOrigins(wenvp, aCount, iSigMask);
#else
iFids.CheckOrigins(wenvp, aCount);
#endif
}
#ifdef SYMBIAN_OE_POSIX_SIGNALS
// -----------------------------------------------------------------------------
// CLocalSystemInterface::WaitOrHandleSignal
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::WaitOrHandleSignal(TSignalMessage aMsg)
{
TInt lSigNum = 0,lIdx = 0,lSigVal = 0;
TSignalWaiter lTempWaiter(0,0);
if(aMsg.mType == TSignalMessage::ESignal)
lSigNum = aMsg.mSignal;
else if(aMsg.mType == TSignalMessage::ESignalValuePair)
{
lSigNum = aMsg.mSigVal.mSignal;
lSigVal = aMsg.mSigVal.mValue;
}
else if(aMsg.mType == TSignalMessage::ERtTimerSignal)
{
lSigNum = aMsg.mRtSignal.mSignal;
}
// check and deliver to waiter (if any)
TUint64 lMask;
SIG_EMPTY_SIGSET(lMask);
SIG_ADD_SIGNAL_TO_SET(lSigNum,lMask);
lTempWaiter.iSigWaitMask = lMask;
lIdx = iSignalWaiterArray.Find(lTempWaiter,TSignalWaiter::MatchByMask);
if(lIdx != KErrNotFound)
{
iSignalWaiterMutex.Wait();
iSignalWaiterArray[lIdx].iSigWaitMessagePtr->mType = aMsg.mType;
if(aMsg.mType == TSignalMessage::ESignal)
iSignalWaiterArray[lIdx].iSigWaitMessagePtr->mSignal = lSigNum;
else if(aMsg.mType == TSignalMessage::ESignalValuePair)
{
iSignalWaiterArray[lIdx].iSigWaitMessagePtr->mSigVal.mSignal = lSigNum;
iSignalWaiterArray[lIdx].iSigWaitMessagePtr->mSigVal.mValue = lSigVal;
}
iSignalWaiterArray[lIdx].iSigWaitSemaphore.Signal();
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
iSignalWaiterArray.Remove(lIdx);
User::SwitchHeap(oldHeap);
iSignalWaiterMutex.Signal();
}
// queueing if blocked or sigqueue
else
{
HandleSignal(aMsg);
}
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::SignalHandler
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::SignalHandler()
{
// TODO: Put memory barrier to ensure SMP safety
TInt lRetVal = KErrGeneral;
InitializeSignalHandlers();
RPipe::Init(); // check return value
lRetVal = RPipe::Create(KSignalPipeSize,iSignalReadPipe,iSignalWritePipe);
if(lRetVal != KErrNone)
{
iSignalInitSemaphore.Signal();
return lRetVal;
}
lRetVal = iSignalSession.SendPipe(iSignalWritePipe); // check return value
if(lRetVal != KErrNone)
{
iSignalInitSemaphore.Signal();
return lRetVal;
}
/* Closing the end of the pipe that's been sent to the server */
iSignalWritePipe.Close();
iSignalsInitialized = ETrue;
iSignalInitSemaphore.Signal();
iSignalLoopRunning = ETrue;
iPipeReadStatus = KRequestPending;
iSignalReadPipe.NotifyDataAvailable(iPipeReadStatus);
while(iSignalLoopRunning)
{
User::WaitForAnyRequest();
if(iSignalLoopRunning == false) {
break;
}
// Check if it is a pipe read
if(iPipeReadStatus != KRequestPending)
{
if(iPipeReadStatus == KErrNone)
{
TBuf8<KSigMsgLength> lMsgBuf;
TInt lRetVal = KErrNone;
lRetVal = iSignalReadPipe.Read(lMsgBuf,KSigMsgLength);
TSignalMessage lMsg;
TInt lIdx = 0;
if(lMsg.Unmarshall(lMsgBuf)==KErrNone && lRetVal >= 0)
{
TInt lIdx1 = 0, lIdx2 = 0, lIdx3 = 0;
TSignalMessage lTmpMsg1,lTmpMsg2,lTmpMsg3;
TBool lSignalsFound = ETrue;
TChildWaiter lWaiter;
switch(lMsg.mType)
{
case TSignalMessage::ESignalValuePair:
case TSignalMessage::ESignal:
case TSignalMessage::ERtTimerSignal:
WaitOrHandleSignal(lMsg);
break;
case TSignalMessage::EDequeueSignal:
lTmpMsg1.mType = TSignalMessage::ESignal;
lTmpMsg1.mSignal = lMsg.mSignal;
lTmpMsg2.mType = TSignalMessage::ESignalValuePair;
lTmpMsg2.mSigVal.mSignal = lMsg.mSignal;
lTmpMsg3.mType = TSignalMessage::ERtTimerSignal;
lTmpMsg3.mRtSignal.mSignal = lMsg.mSignal;
while(lSignalsFound)
{
iBlockedSAMutex.Wait();
lIdx1 = iBlockedSigArray.Find(lTmpMsg1,TSignalMessage::SignalMatchBySigNum);
lIdx2 = iBlockedSigArray.Find(lTmpMsg2,TSignalMessage::SigValMatchBySigNum);
lIdx3 = iBlockedSigArray.Find(lTmpMsg3,TSignalMessage::SigValMatchBySigNum);
iBlockedSAMutex.Signal();
if(lIdx1 == KErrNotFound && lIdx2 == KErrNotFound)
{
lSignalsFound = EFalse;
}
else
{
if(lIdx1 != KErrNotFound)
{
HandleSignal(lTmpMsg1,ETrue);
iBlockedSAMutex.Wait();
iBlockedSigArray.Remove(lIdx1);
iBlockedSAMutex.Signal();
}
if(lIdx2 != KErrNotFound)
{
HandleSignal(lTmpMsg2,ETrue);
iBlockedSAMutex.Wait();
iBlockedSigArray.Remove(lIdx2);
iBlockedSAMutex.Signal();
}
if(lIdx3 != KErrNotFound)
{
HandleSignal(lTmpMsg3, ETrue);
iBlockedSAMutex.Wait();
iBlockedSigArray.Remove(lIdx3);
iBlockedSAMutex.Signal();
}
}
}
break;
case TSignalMessage::EAlarmRegistration:
if((iAlarmStatus == KRequestPending) && iIsTimerActive)
{
iAlarmTimer.Cancel();
iIsTimerActive = EFalse;
}
if(lMsg.mTimeOut)
{
iAlarmTimer.After(iAlarmStatus,lMsg.mTimeOut*1000000);
iAlarmStartTime.HomeTime();
iIsTimerActive = ETrue;
}
break;
case TSignalMessage::EWaitOnChild:
lWaiter.iWaiterPid = TProcessId(lMsg.mPid);
lWaiter.iWaiterStatus = KRequestPending;
lIdx = iChildWaiterArray.Find(lWaiter,TChildWaiter::MatchByPid);
if(lIdx == KErrNotFound)
{
lWaiter.iWaiterPid = TProcessId(lMsg.mPid);
lWaiter.iWaiterStatus = KRequestPending;
iChildWaiterArray.Append(lWaiter);
lIdx = iChildWaiterArray.Find(lWaiter,TChildWaiter::MatchByPid);
if(lIdx != KErrNotFound)
{
RProcess lProcess;
if(lProcess.Open(TProcessId(iChildWaiterArray[lIdx].iWaiterPid)) == KErrNone)
{
lProcess.Logon(iChildWaiterArray[lIdx].iWaiterStatus);
}
}
}
else
{
TProcessId lPid(iChildWaiterArray[lIdx].iWaiterPid);
iChildWaiterArray[lIdx].iWaiterStatus = KRequestPending;
RProcess lProcess(lPid);
lProcess.Logon(iChildWaiterArray[lIdx].iWaiterStatus);
}
break;
default:
break;
}
}
}
iPipeReadStatus = KRequestPending;
iSignalReadPipe.NotifyDataAvailable(iPipeReadStatus);
}
if((iAlarmStatus != KRequestPending) && iIsTimerActive)
{
if(iAlarmStatus == KErrNone)
{
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::ESignal;
lMsg.mSignal = SIGALRM;
WaitOrHandleSignal(lMsg);
}
iIsTimerActive = EFalse;
}
TBool lChildCheckRunning = ETrue;
while(lChildCheckRunning)
{
TChildWaiter lWaiter;
lWaiter.iWaiterStatus = KErrNone; // dummy waiter to match non pending waiters
TInt lTimerIdx = iChildWaiterArray.Find(lWaiter,TChildWaiter::MatchNotPending);
if(lTimerIdx != KErrNotFound)
{
TSignalMessage lSigChldMsg;
lSigChldMsg.mType = TSignalMessage::ESignal;
lSigChldMsg.mSignal = SIGCHLD;
TBuf8<KSigMsgLength> lMsgBuf;
lSigChldMsg.Marshall(lMsgBuf);
iSignalWritePipe.Write(lMsgBuf,KSigMsgLength);
iChildWaiterArray.Remove(lTimerIdx);
}
else
{
lChildCheckRunning = EFalse;
}
}
}
if(iPipeReadStatus == KRequestPending)
{
iSignalReadPipe.CancelDataAvailable();
}
iSignalReadPipe.Close();
if(iAlarmStatus == KRequestPending)
{
iAlarmTimer.Cancel();
}
TInt lCounterIdx = 0;
for(lCounterIdx = 0; lCounterIdx < iChildWaiterArray.Count(); lCounterIdx++)
{
if(iChildWaiterArray[lCounterIdx].iWaiterStatus == KRequestPending)
{
RProcess lProcess;
if(lProcess.Open(TProcessId(iChildWaiterArray[lCounterIdx].iWaiterPid)) == KErrNone)
{
lProcess.LogonCancel(iChildWaiterArray[lCounterIdx].iWaiterStatus);
lProcess.Close();
}
}
}
iSignalSession.Close();
return KErrNone;
}
static TInt sSignalHandler(TAny* aData)
{
CLocalSystemInterface* lClsi = 0;
TInt ret = 0;
if(aData == 0)
return KErrGeneral;
lClsi = static_cast<CLocalSystemInterface*>(aData);
CTrapCleanup* pCleanup = CTrapCleanup::New();
if (pCleanup)
{
ret = lClsi->SignalHandler();
delete pCleanup;
}
else
{
ret = KErrNoMemory;
}
return ret;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::InitSignalHandler
// -----------------------------------------------------------------------------
//
EXPORT_C void CLocalSystemInterface::InitSignalHandler()
{
if(iSignalsInitialized)
return;
// Create thread
iSignalHandlerThread.Create(KNullDesC,sSignalHandler,KDefaultStackSize,NULL,this);
// Raise priority
iSignalHandlerThread.SetPriority(EPriorityAbsoluteHigh);
iSignalHandlerThread.Resume();
iSignalInitSemaphore.Wait();
return;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::EnsureSignalsInitialized
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::EnsureSignalsInitialized()
{
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::SigWaitInternal
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::SigWaitInternal(TUint64 aWaitSet,TSignalMessage* aMsg,TInt aTimeout,TBool aTimeCheckFailed)
{
if(aWaitSet == 0)
return KErrArgument;
TInt lArrayIdx = 0,lSignalIdx = 1;
while(lSignalIdx <= SIGRTMAX)
{
if(SIG_SIGNAL_PRESENT_IN_SIGSET(lSignalIdx,aWaitSet) && lSignalIdx != SIGKILL && lSignalIdx != SIGSTOP)
{
TSignalMessage lTmpMsg;
lTmpMsg.mType = TSignalMessage::ESignal;
lTmpMsg.mSignal = lSignalIdx;
iBlockedSAMutex.Wait();
lArrayIdx = iBlockedSigArray.Find(lTmpMsg,TSignalMessage::SignalMatchBySigNum);
iBlockedSAMutex.Signal();
if(lArrayIdx != KErrNotFound)
{
if(aMsg)
{
aMsg->mType = TSignalMessage::ESignal;
iBlockedSAMutex.Wait();
aMsg->mSignal = iBlockedSigArray[lArrayIdx].mSignal;
iBlockedSAMutex.Signal();
}
iBlockedSAMutex.Wait();
iBlockedSigArray.Remove(lArrayIdx);
iBlockedSAMutex.Signal();
return KErrNone;
}
lTmpMsg.mType = TSignalMessage::ESignalValuePair;
lTmpMsg.mSigVal.mSignal = lSignalIdx;
iBlockedSAMutex.Wait();
lArrayIdx = iBlockedSigArray.Find(lTmpMsg,TSignalMessage::SigValMatchBySigNum);
iBlockedSAMutex.Signal();
if(lArrayIdx != KErrNotFound)
{
if(aMsg)
{
aMsg->mType = TSignalMessage::ESignalValuePair;
iBlockedSAMutex.Wait();
aMsg->mSigVal.mSignal = iBlockedSigArray[lArrayIdx].mSigVal.mSignal;
aMsg->mSigVal.mValue = iBlockedSigArray[lArrayIdx].mSigVal.mValue;
iBlockedSAMutex.Signal();
}
iBlockedSAMutex.Wait();
iBlockedSigArray.Remove(lArrayIdx);
iBlockedSAMutex.Signal();
return KErrNone;
}
lTmpMsg.mType = TSignalMessage::ERtTimerSignal;
lTmpMsg.mRtSignal.mSignal = lSignalIdx;
iBlockedSAMutex.Wait();
lArrayIdx = iBlockedSigArray.Find(lTmpMsg,TSignalMessage::SigValMatchBySigNum);
iBlockedSAMutex.Signal();
if(lArrayIdx != KErrNotFound)
{
if(aMsg)
{
aMsg->mType = TSignalMessage::ERtTimerSignal;
iBlockedSAMutex.Wait();
aMsg->mRtSignal.mSignal = iBlockedSigArray[lArrayIdx].mRtSignal.mSignal;
iBlockedSAMutex.Signal();
}
iBlockedSAMutex.Wait();
iBlockedSigArray.Remove(lArrayIdx);
iBlockedSAMutex.Signal();
return KErrNone;
}
}
lSignalIdx++;
}
if(aTimeCheckFailed)
return KErrGeneral;
TSignalMessage lMsg;
TSignalWaiter lWaiter(aWaitSet,&lMsg);
iSignalWaiterMutex.Wait();
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
iSignalWaiterArray.Append(lWaiter);
User::SwitchHeap(oldHeap);
iSignalWaiterMutex.Signal();
if(aTimeout > 0)
{
TInt lRetVal = lWaiter.iSigWaitSemaphore.Wait(aTimeout);
if(lRetVal != KErrNone)
{
// Timed out
TSignalWaiter lTempWaiter(0,0);
TInt lIdx;
iSignalWaiterMutex.Wait();
lIdx = iSignalWaiterArray.Find(lTempWaiter,TSignalWaiter::MatchByThreadId);
if(lIdx != KErrNotFound)
{
oldHeap = User::SwitchHeap(iPrivateHeap);
iSignalWaiterArray.Remove(lIdx);
User::SwitchHeap(oldHeap);
}
iSignalWaiterMutex.Signal();
return KErrTimedOut;
}
}
else
lWaiter.iSigWaitSemaphore.Wait();
TSignalWaiter lTempWaiter(0,0);
TInt lIdx = 0;
iSignalWaiterMutex.Wait();
lIdx = iSignalWaiterArray.Find(lTempWaiter,TSignalWaiter::MatchByThreadId);
if(lIdx != KErrNotFound)
{
oldHeap = User::SwitchHeap(iPrivateHeap);
iSignalWaiterArray.Remove(lIdx);
User::SwitchHeap(oldHeap);
}
iSignalWaiterMutex.Signal();
if(lMsg.mType == TSignalMessage::ESignal)
{
aMsg->mType = TSignalMessage::ESignal;
aMsg->mSignal = lMsg.mSignal;
}
else if(lMsg.mType == TSignalMessage::ESignalValuePair)
{
aMsg->mType = TSignalMessage::ESignalValuePair;
aMsg->mSigVal.mSignal = lMsg.mSigVal.mSignal;
aMsg->mSigVal.mValue = lMsg.mSigVal.mValue;
}
else if(lMsg.mType == TSignalMessage::ERtTimerSignal)
{
aMsg->mType = TSignalMessage::ERtTimerSignal;
aMsg->mRtSignal.mSignal = lMsg.mRtSignal.mSignal;
}
else
{
return KErrGeneral;
}
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::RegisterExitNotification
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::RegisterExitNotification(TProcessId aPid)
{
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::EWaitOnChild;
lMsg.mPid = aPid.Id();
TBuf8<KSigMsgLength> lMsgBuf;
lMsg.Marshall(lMsgBuf);
iSignalWritePipe.Write(lMsgBuf,KSigMsgLength);
return;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::InitializeSigHandlers
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::InitializeSignalHandlers()
{
iSigHandlerMutex.CreateLocal();
iAlarmTimer.CreateLocal(); // what should be done if fails
iIsTimerActive = EFalse;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::HandleSignal
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::HandleSignal(TSignalMessage& aMsg,TBool aIsDequeued)
{
TUint8 lSigNum = 0;
if(aMsg.mType == TSignalMessage::ESignal)
lSigNum = aMsg.mSignal;
else if(aMsg.mType == TSignalMessage::ERtTimerSignal)
lSigNum = aMsg.mRtSignal.mSignal;
else
lSigNum = aMsg.mSigVal.mSignal;
if(lSigNum <= 0 || lSigNum > SIGRTMAX)
return;
if(SIG_SIGNAL_PRESENT_IN_SIGSET(lSigNum,iSigMask) && !aIsDequeued)
{
TInt lIdx = 0;
TSignalMessage lTmpMsg;
lTmpMsg.mType = aMsg.mType;
if(aMsg.mType == TSignalMessage::ESignal)
{
lTmpMsg.mSignal = aMsg.mSignal;
iBlockedSAMutex.Wait();
lIdx = iBlockedSigArray.Find(lTmpMsg,TSignalMessage::SignalMatchBySigNum);
iBlockedSAMutex.Signal();
if(lIdx == KErrNotFound || lSigNum >= SIGRTMIN)
{
lTmpMsg.mType = TSignalMessage::ESignal;
lTmpMsg.mSignal = aMsg.mSignal;
iBlockedSAMutex.Wait();
iBlockedSigArray.Append(lTmpMsg);
iBlockedSAMutex.Signal();
}
}
else if(aMsg.mType == TSignalMessage::ESignalValuePair)
{
lTmpMsg.mSigVal.mSignal = aMsg.mSigVal.mSignal;
lTmpMsg.mSigVal.mValue = aMsg.mSigVal.mValue;
iBlockedSAMutex.Wait();
iBlockedSigArray.Append(lTmpMsg);
iBlockedSAMutex.Signal();
}
else if(aMsg.mType == TSignalMessage::ERtTimerSignal)
{
lTmpMsg.mSignal = aMsg.mRtSignal.mSignal;
iBlockedSAMutex.Wait();
lIdx = iBlockedSigArray.Find(lTmpMsg,TSignalMessage::SignalMatchBySigNum);
iBlockedSAMutex.Signal();
if(lIdx == KErrNotFound || lSigNum >= SIGRTMIN)
{
lTmpMsg.mType = TSignalMessage::ERtTimerSignal;
lTmpMsg.mRtSignal.mSignal = aMsg.mRtSignal.mSignal;
iBlockedSAMutex.Wait();
iBlockedSigArray.Append(lTmpMsg);
iBlockedSAMutex.Signal();
}
}
return;
}
else
{
SuspendOtherThreads();// suspend all other threads
TUint32 lSigVal = 0;
TSignalHandler lCurHandler = 0;
TSignalAction lCurAction = 0;
if(aMsg.mType == TSignalMessage::ESignal)
lSigNum = aMsg.mSignal;
else if(aMsg.mType == TSignalMessage::ESignalValuePair)
{
lSigNum = aMsg.mSigVal.mSignal;
lSigVal = aMsg.mSigVal.mValue;
}
else if(aMsg.mType == TSignalMessage::ERtTimerSignal)
{
lSigNum = aMsg.mRtSignal.mSignal;
#ifdef SYMBIAN_OE_LIBRT
//reset the overrun count before calling the handler/action.
ResetOverrun(aMsg.mRtSignal.mTimerId);
#endif //SYMBIAN_OE_LIBRT
}
else
{
ResumeOtherThreads();
return;
}
iSigHandlerMutex.Wait();
lCurHandler = iSigActions[lSigNum -1].iSigHandler;
lCurAction = iSigActions[lSigNum-1].iSigAction;
if(lCurAction)
{
siginfo_t lsiginfo;
lsiginfo.si_signo = lSigNum;
lsiginfo.si_value.sival_int = lSigVal;
lCurAction(lSigNum,&lsiginfo,(void*)0); // setting context as 0
}
else
{
if(lCurHandler == SIG_DFL)
{
CallDefaultHandler(lSigNum);
}
else if(lCurHandler != SIG_IGN)
{
lCurHandler(lSigNum);
}
}
ResumeOtherThreads();// resume all other threads
}
if(iSigActions[lSigNum -1].iSigFlags & SA_RESETHAND)
{
iSigActions[lSigNum -1].iSigHandler = SIG_DFL;
}
iSigHandlerMutex.Signal();
return;
}
// -----------------------------------------------------------------------------
// sig_exit
// -----------------------------------------------------------------------------
//
static void sig_exit()
{
Backend()->Exit(0); // Check if clean exit or terminate is to be done
return;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::CallDefaultHandler
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::CallDefaultHandler(int aSigNum)
{
if(aSigNum < 1 || aSigNum > SIGRTMAX)
return;
switch(aSigNum)
{
case SIGTERM:
case SIGKILL:
case SIGALRM:
case SIGPIPE:
sig_exit();
break;
case SIGQUIT:
default:
// SIG_IGN - Do nothing;
break;
}
return;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::SuspendOtherThreads
// -----------------------------------------------------------------------------
//
_LIT(KThreadFormatString,"*");
TInt CLocalSystemInterface::SuspendOtherThreads()
{
TFileName lProcessName = RProcess().FileName();
TBuf<256> lThreadNameString;
TFullName lThreadName;
#ifdef SYMBIAN_OE_LIBRT
TBool lFoundTimerServ = EFalse;
#endif
TParsePtr lParser(lProcessName);
TPtrC lName = lParser.NameAndExt();
lThreadNameString.Append(lName);
lThreadNameString.Append(KThreadFormatString);
TFindThread lFindPattern(lThreadNameString);
TInt lRetVal = KErrNone;
while(lRetVal == KErrNone)
{
lRetVal = lFindPattern.Next(lThreadName);
if(lRetVal == KErrNone)
{
#ifdef SYMBIAN_OE_LIBRT
if(!lFoundTimerServ && (lThreadName.Match(_L("*LibrtTimerServ")) != KErrNotFound))
{
lFoundTimerServ = ETrue;
continue;
}
#endif
RThread lThread;
RProcess lProcess;
if(lThread.Open(lThreadName) == KErrNone)
{
lThread.Process(lProcess);
if( (lProcess.Id() == RProcess().Id()) &&
(lThread.Id() != RThread().Id()) )
lThread.Suspend();
lThread.Close();
}
}
}
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::ResumeOtherThreads
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::ResumeOtherThreads()
{
TFileName lProcessName = RProcess().FileName();
TBuf<256> lThreadNameString;
TFullName lThreadName;
#ifdef SYMBIAN_OE_LIBRT
TBool lFoundTimerServ = EFalse;
#endif
TParsePtr lParser(lProcessName);
TPtrC lName = lParser.NameAndExt();
lThreadNameString.Append(lName);
lThreadNameString.Append(KThreadFormatString);
TFindThread lFindPattern(lThreadNameString);
TInt lRetVal = KErrNone;
while(lRetVal == KErrNone)
{
lRetVal = lFindPattern.Next(lThreadName);
if(lRetVal == KErrNone)
{
#ifdef SYMBIAN_OE_LIBRT
if(!lFoundTimerServ && (lThreadName.Match(_L("*LibrtTimerServ")) != KErrNotFound))
{
lFoundTimerServ = ETrue;
continue;
}
#endif
RThread lThread;
RProcess lProcess;
if(lThread.Open(lThreadName) == KErrNone)
{
lThread.Process(lProcess);
if( (lProcess.Id() == RProcess().Id()) &&
(lThread.Id() != RThread().Id()) )
lThread.Resume();
lThread.Close();
}
}
}
return KErrNone;
}
#endif // SYMBIAN_OE_POSIX_SIGNALS
// -----------------------------------------------------------------------------
// CLocalSystemInterface::fcntl
// Implementation for fcntl
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::fcntl (int aFid, int aCmd, long anArg, int& anErrno)
{
return iFids.fcntl(aFid, aCmd, anArg, anErrno);
}
int CLocalSystemInterface::fchmod (int fd , mode_t perms, int& anErrno)
{
CFileDescBase *f = NULL;
TInt err = iFids.At(fd, f);
if(!err)
{
switch(perms & (S_IWUSR | S_IRUSR ))
{
case S_IRUSR | S_IWUSR :
case S_IWUSR :
{
err = f->SetAtt(0, KEntryAttReadOnly);
break;
}
case S_IRUSR :
{
err = f->SetAtt(KEntryAttReadOnly, 0);
break;
}
default :
{
err = KErrArgument;
break;
}
}
}
return MapError(err, anErrno);
}
// Synchronous layer over CFileTable asynchronous routines
int CLocalSystemInterface::read (int fid, char* buf, unsigned long len, int& anErrno)
{
CFileDescBase* f=0;
TBool patchErr = EFalse;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
//if the file is WRONLY then return Error here
TUint flgs = f->Fcntl(fid, F_GETFL);
if ((flgs & O_ACCMODE) == O_WRONLY)
{
anErrno = EBADF;
f->Close(); // balances the Dup() in CFileTable::Asynch()
return -1;
}
TRequestStatus readStatus;
TRequestStatus timerStatus(KRequestPending);
RTimer theTimer;
TBool timerRunning = EFalse;
TPtr8 ptr((TText8 *)buf, len);
if (f->TimedRead())
{
TTimeIntervalMicroSeconds32 timeout(f->TimeoutValue()*1000);
theTimer.CreateLocal();
theTimer.After(timerStatus, timeout);
timerRunning = ETrue;
}
//If its console based, fid = {0, 1, 2 }
if( fid >= 0 && fid <= 2 )
{
f->SetFid(fid);
}
f->Read(ptr, readStatus);
User::WaitForRequest(readStatus, timerStatus);
if (timerRunning)
{
if (timerStatus.Int() != KRequestPending)
{
//cancel the read and wait for it
f->ReadCancel();
patchErr = ETrue; //report this as a timeout not a cancel!!
User::WaitForRequest(readStatus);
}
else
{
//if the timer was in operation
//cancel the timer
theTimer.Cancel();
User::WaitForRequest(timerStatus);
}
theTimer.Close();
}
err=f->ReadCompletion(ptr, readStatus.Int());
f->Close(); // balances the Dup() in CFileTable::Asynch()
if (err>0)
return err;
else if( (f->Attributes() & KPipeFd )|| (fid == 0))
{
// if EOF is reached in case of pipes or stdin
// TODO: Verify that this check is valid for console or comm-based stdin?
if(err == KErrEof)
{
MapError(err,anErrno);
return 0;
}
}
else if( f->Type()==CFileDescBase::ESocketDesc || f->Type()==CFileDescBase::EFileSocketDesc)
{
// if EOF is reached for the Socket return 0
if(err == KErrEof)
{
return 0;
}
if(err == KErrDisconnected)
{
err = ECONNRESET;
}
}
}
if (patchErr)
err = ETIMEDOUT;
return MapError(err,anErrno);
}
int CLocalSystemInterface::write (int fid, const char* buf, unsigned long len, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
TRequestStatus status;
TPtr8 ptr((TText8 *)buf, len, len);
//If its console based, fid = {0, 1, 2 }
if( fid >= 0 && fid <= 2 )
{
f->SetFid(fid);
}
TUint flgs = f->Fcntl(fid, F_GETFL);
if((flgs & O_ACCMODE) == O_RDONLY)
{
anErrno = EBADF;
f->Close(); // balances the Dup() in CFileTable::Asynch()
return -1;
}
f->Write(ptr,status);
User::WaitForRequest(status);
err=f->WriteCompletion(ptr, status.Int());
f->Close(); // balances the Dup() in CFileTable::Asynch()
if (err > 0)
return err;
if((f->Type() == CFileDescBase::EFileSocketDesc || f->Type() == CFileDescBase::ESocketDesc) && err == KErrDisconnected)
{
err = ECONNRESET;
}
}
return MapError(err,anErrno);
}
int CLocalSystemInterface::recvfrom (int fid, char* buf, unsigned long len, int flags, struct sockaddr* from, unsigned long* fromsize, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
TRequestStatus status;
TPtr8 ptr((TText8 *)buf, len);
struct sockaddr tmpAddr;
TUSockAddr addr(&tmpAddr);
f->RecvFrom(ptr,addr,flags,status);
User::WaitForRequest(status);
TInt ret=0;
err=f->CompletionStatus(ret, status.Int());
f->Close(); // balances the Dup() in CFileTable::Asynch()
if (err==0)
{
if(f->Type() == CFileSocketDesc::EFileSocketDesc)
{
((CFileSocketDesc*)f)->GetLocalSockAddrByPort((sockaddr_un*)from,fromsize,addr.Port());
}
else
{
addr.Get(from,fromsize);
}
return ptr.Length();
}
}
if(err == KErrDisconnected)
{
anErrno = ECONNRESET;
return -1;
}
if (err == KErrWouldBlock)
{
return MapError(EAGAIN, anErrno);
}
else
{
return MapError(err,anErrno);
}
}
int CLocalSystemInterface::sendto (int fid, const char* buf, unsigned long len, int flags, struct sockaddr* to, unsigned long tosize, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
TRequestStatus status;
TPtr8 ptr((TText8 *)buf, len, len);
TInt bytesSent = 0;
f->SendTo(ptr,to,tosize,flags,status);
User::WaitForRequest(status);
err=f->CompletionStatus(bytesSent, status.Int());
f->Close(); // balances the Dup() in CFileTable::Asynch()
if (err==0)
{
return bytesSent;
}
}
if (err == KErrNotReady)
{
anErrno = EPIPE;
return -1;
}
if(err == KErrDisconnected)
{
anErrno = ECONNRESET;
return -1;
}
// A Hack to convert KErrTooBig to EMSGSIZE for this API.
// For any KErrTooBig, MapError will convert it to EFAULT.
if (err == KErrTooBig)
{
anErrno = EAGAIN;
return -1;
}
return MapError(err,anErrno);
}
int CLocalSystemInterface::fsync (int fid, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
TRequestStatus status;
f->Sync(status);
User::WaitForRequest(status);
f->Close(); // balances the Dup() in CFileTable::Asynch()
err=status.Int();
}
return MapError(err,anErrno);
}
int CLocalSystemInterface::shutdown (int fid, int how, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
TRequestStatus status;
f->Shutdown(how,status);
User::WaitForRequest(status);
err=status.Int();
// SOS does not allow to RSocket::Shutdown() immediately.
if (err == KErrNotSupported)
{
err = 0;
}
f->Close(); // balances the Dup() in CFileTable::Asynch()
}
return MapError(err,anErrno);
}
int CLocalSystemInterface::connect (int fid, const struct sockaddr* addr, unsigned long size, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
TInt mapErr = err;
if(!err)
{
// Check if a connection request is already in progress for a non-blocking socket.
if (f->GetConnectionProgress())
{
mapErr = f->iPollErr;
if (f->iPollErr < 0)
{
mapErr = f->iPollErr;
f->iPollErr = 0;
f->SetConnectionProgress(EFalse);
}
else
{
// Poll to see if the connect() is completed
err = f->Poll(EReadyForWriting);
// The above Poll is common for all descriptors.
// In case of socket-descriptors, Poll will either return "KErrNone"
// or any of the requested events. To check for Poll error in case of
// socket-descriptors, "iPollErr" should be checked.
if (f->iPollErr < 0)
{
mapErr = f->iPollErr;
f->iPollErr = 0;
}
else if (err == 0) //Connect still in progress
mapErr = EALREADY;
else if (err & EReadyForWriting)
{
mapErr = EISCONN;
}
}
}
if(!mapErr)
{
TRequestStatus status;
f->Connect(addr,size,status);
err = status.Int();
if (err == KErrWouldBlock)
{
mapErr = EINPROGRESS;
}
else if (err == KErrAlreadyExists)
{
mapErr = EISCONN;
}
else
mapErr = err;
}
f->Close(); // balances the Dup() in CFileTable::Asynch()
}
return MapError(mapErr, anErrno);
}
//
// The CSocketDesc performing the Accept is responsible for creating the new CSocketDesc
//
int CLocalSystemInterface::accept (int fid, struct sockaddr *addr, size_t *size, int& anErrno)
{
size_t addrlen = 0;
if (addr && !size)
{
anErrno = EINVAL;
return -1;
}
else if (size)
{
addrlen = *size;
}
TUSockAddr address((TAny*)addr, addrlen);
/* Accept implementations that use the TUSockAddr* param, first need to assert address.iError == 0 */
CFileDescBase* f = 0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
CFileDescBase* newf=0;
int fd=iFids.Reserve();
if (fd>=0)
{
TRequestStatus status;
//Acquire the Lock before issuing a request to the server and release it later
iSSLock.Wait();
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
//coverity[alloc_fn]
f->Accept(newf,status,iSs, &address);
User::SwitchHeap(oldHeap);
iSSLock.Signal();
User::WaitForRequest(status);
//coverity[leave_without_push]
f->Close(); // balances the Dup() in CFileTable::Asynch()
err=status.Int();
if (!err)
{
err=iFids.Attach(fd,newf);
if (!err)
return fd;
newf->Close();
}
else if(newf != NULL)
{
//coverity[leave_without_push]
newf->Close();
}
iFids.Attach(fd,0); // cancel the reservation
}
//coverity[memory_leak]
}
if (err == KErrNotReady)
{
return MapError(EINVAL,anErrno);
}
else if (err == KErrWouldBlock)
{
return MapError(EWOULDBLOCK, anErrno);
}
else
{
return MapError(err,anErrno);
}
}
int CLocalSystemInterface::ioctl (int fid, int cmd, void* param, int& anErrno)
{
TRequestStatus ioctlStatus;
TInt err=ioctl(fid,cmd,param,ioctlStatus,anErrno);
if (err==KErrNone)
{
User::WaitForRequest(ioctlStatus);
err=ioctl_complete(fid,cmd,param,ioctlStatus,anErrno);
}
return err;
}
// C++ version of asynchronous ioctl
int CLocalSystemInterface::ioctl (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno)
{
CFileDescBase* f=0;
TInt err=iFids.Asynch(fid,f);
if (!err)
{
f->Ioctl(cmd,param,aStatus);
f->Close(); // balances the Dup() in CFileTable::Asynch() - live dangerously!
}
return MapError(err,anErrno);
}
int CLocalSystemInterface::ioctl_complete (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno)
{
return iFids.ioctlcomplete(fid,cmd,param,aStatus,anErrno);
}
#ifdef __SYMBIAN_COMPILE_UNUSED__
int CLocalSystemInterface::ioctl_cancel (int fid, int& anErrno)
{
return iFids.ioctlcancel(fid,anErrno);
}
#endif //__SYMBIAN_COMPILE_UNUSED__
int CLocalSystemInterface::pipe(int fildes[2], int& anErrno )
{
return iFids.pipe(fildes, anErrno);
}
int CLocalSystemInterface::mkfifo(const wchar_t *pathName, mode_t mode, int& anErrno )
{
return iFids.mkfifo(pathName, mode, anErrno, iFs);
}
int CLocalSystemInterface::link(const wchar_t *oldpathName, const wchar_t *newpathName, int& anErrno )
{
return iFids.link(oldpathName, newpathName, anErrno, iFs);
}
int CLocalSystemInterface::unlink(const wchar_t *pathName, int& anErrno )
{
return iFids.unlink(iFs, pathName, anErrno);
}
int CLocalSystemInterface::select(int maxfd, fd_set* readfds,fd_set* writefds,
fd_set* exceptfds, struct timeval* tvptr, int& anErrno)
{
// select is nothing but eselect without any TRequestStatus array
return eselect(maxfd,readfds,writefds,exceptfds,tvptr,0,NULL,anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::aselect
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::aselect(int maxfd, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, struct timeval *tvptr, TRequestStatus* requeststatus,
int& anErrno)
{
// Create a seperate thread to handle the aselect
return CreateaselectThread(maxfd, readfds, writefds, exceptfds, tvptr,
requeststatus,anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::aselect
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::cancelaselect(TRequestStatus* requeststatus, int& anErrno, TBool perform_cleanup)
{
iASelectLock.Wait();
// Search for the aselect request entry in the aselect request array
for (TInt i = 0; i < iASelectRequest.Count(); ++i)
{
if (iASelectRequest[i].iRequestStatus == requeststatus || perform_cleanup)
{
// The specified request exists
RThread thread;
// Open a handle to the service thread
TInt res = thread.Open(iASelectRequest[i].iThreadId,EOwnerThread);
if (res == KErrNone)
{
// Kill the service thread
thread.Kill(KErrCancel);
thread.Close();
if (!perform_cleanup)
{
User::RequestComplete(iASelectRequest[i].iRequestStatus,KErrCancel);
}
// Switch to backend heap
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
// Remove the request details from the array
iASelectRequest.Remove(i);
// Switch back to old heap
User::SwitchHeap(oldHeap);
if (!perform_cleanup)
{
iASelectLock.Signal();
return KErrNone;
}
}
else
{
if (!perform_cleanup)
{
iASelectLock.Signal();
// unable to open a handle to the service thread
return MapError(res, anErrno);
}
}
}
}
iASelectLock.Signal();
// No request found with the specified TRequestStatus object
return MapError((!perform_cleanup ? KErrNotFound : KErrNone), anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::ASelectRequest
// -----------------------------------------------------------------------------
//
RArray<TASelectRequest>& CLocalSystemInterface::ASelectRequest()
{
// Return a reference to the array
return iASelectRequest;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::ASelectLock
// -----------------------------------------------------------------------------
//
RFastLock& CLocalSystemInterface::ASelectLock()
{
// Return a reference to the array
return iASelectLock;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::eselect
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::eselect(int maxfd, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, struct timeval *tvptr, int arraycount,
TRequestStatus* waitarray,int& anErrno)
{
unsigned long timeout = 0;
if (tvptr)
{
if (tvptr->tv_sec < 0 || tvptr->tv_usec < 0)
{
anErrno = EINVAL;
return -1;
}
// converting to micro seconds
timeout = KConvertToMicroSecond * tvptr->tv_sec + tvptr->tv_usec;
}
// validate maxfd
if (maxfd < 0 || maxfd > FD_SETSIZE)
{
anErrno = EINVAL;
return -1;
}
// maxfd should not be more than OPEN_MAX
if(maxfd > OPEN_MAX)
{
maxfd = OPEN_MAX;
}
if (!readfds && !writefds && !exceptfds && ((arraycount == 0) || (waitarray == NULL)) )
{
if (tvptr)
{
// select is being used as a better resolution timer
User::After(timeout);
anErrno = ETIMEDOUT;
return 0;
}
// hang forever? - according to spec, until interuppted by signal
TRequestStatus req = KRequestPending;
User::WaitForRequest(req);
}
fd_set retreadfds;
fd_set retwritefds;
fd_set retexceptfds;
FD_ZERO(&retreadfds);
FD_ZERO(&retwritefds);
FD_ZERO(&retexceptfds);
// Intially perform synchronous non-blocking polls to see if any of the
// input file descriptors are ready for read/write/error conditions.
// In the meantime also determine, how many TRequestStatus objects we will
// need for the next async run.
CFileDescBase* fdesc = NULL;
TInt nDescriptorsSet = 0;
TInt numReqs = 0;
TInt err = 0;
for (int i = 0; i < maxfd; ++i)
{
TUint events = 0;
if (readfds && FD_ISSET(i, readfds))
{
events = EReadyForReading;
}
if (writefds && FD_ISSET(i, writefds))
{
events |= EReadyForWriting;
}
if (exceptfds && FD_ISSET(i, exceptfds))
{
events |= EAnyException;
}
if (!events)
{
continue;
}
if (iFids.At(i, fdesc) != KErrNone)
{
// Bad input file descriptor
anErrno = EBADF;
return -1;
}
// Poll on this descriptor
err = fdesc->Poll(events);
if (err < 0)
{
if(err == KErrNotSupported)
{
// continue if a write event is being set on the read end of pipe or vice-versa
continue;
}
// An error - we should return
return MapError(err, anErrno);
}
else
{
if (err & EReadyForReading)
{
FD_SET(i, &retreadfds);
++nDescriptorsSet;
}
if (err & EReadyForWriting)
{
FD_SET(i, &retwritefds);
++nDescriptorsSet;
}
if (err & EAnyException)
{
FD_SET(i, &retexceptfds);
++nDescriptorsSet;
}
++numReqs;
}
}
if (nDescriptorsSet || (tvptr && timeout == 0))
{
// Some of the descriptors are ready for requested operations. Return.
if (readfds)
{
FD_COPY(&retreadfds, readfds);
}
if (writefds)
{
FD_COPY(&retwritefds, writefds);
}
if (exceptfds)
{
FD_COPY(&retexceptfds, exceptfds);
}
return nDescriptorsSet;
}
if (numReqs == 0 && ((arraycount == 0) || (waitarray == NULL)) )
{
if (tvptr)
{
User::After(timeout);
anErrno = ETIMEDOUT;
return 0;
}
// hang forever? - according to spec, until interuppted by signal
TRequestStatus req = KRequestPending;
User::WaitForRequest(req);
}
// Now prepare to issue the asynchronous requests.
TRequestStatus** reqarray;
TRequestStatus* reqobjarray;
// Create the array of TRequestStatus objects
reqobjarray = (TRequestStatus *) Alloc((numReqs + (timeout ? 1 : 0)) * sizeof(TRequestStatus));
if (!reqobjarray)
{
anErrno = ENOMEM;
return -1;
}
reqarray = (TRequestStatus **) Alloc((numReqs+arraycount + (timeout ? 1 : 0)) * sizeof(TRequestStatus*));
if (!reqarray)
{
Free(reqobjarray);
anErrno = ENOMEM;
return -1;
}
// Append all the created TRequestStatus objects to the array
for (int i = 0; i<numReqs; i++)
{
reqarray[i] = &reqobjarray[i];
}
// Append the array of TRequestStatus passed in waitarray to the array
for (int i = numReqs, j=0; i<numReqs+arraycount; i++, j++)
{
reqarray[i] = &waitarray[j];
}
if (timeout)
{
// Append the TRequestStatus used for timer to the array
reqarray[numReqs+arraycount] = &reqobjarray[numReqs];
}
TInt *reqfds = (TInt *)Alloc(numReqs * sizeof(TInt));
if (!reqfds)
{
Free(reqarray);
Free(reqobjarray);
anErrno = ENOMEM;
return -1;
}
// Reset numReqs. We will use it to keep track of how many objects in the
// reqarray are valid requests.
numReqs = 0;
// Used to detect one request gathered when this code reaches WaitForNReqs
TBool onedown = EFalse;
// define the RTimer here to work-around a GCC warning
RTimer timer;
if (timeout)
{
// Create the timer to handle the timeout
err = timer.CreateLocal();
if (err != KErrNone)
{
Free(reqarray);
Free(reqobjarray);
Free(reqfds);
return MapError(err, anErrno);
}
}
// Start processing requested-for events
for (int i = 0; i < maxfd; ++i)
{
TUint events = 0;
if (readfds && FD_ISSET(i, readfds))
{
events = EReadyForReading;
}
if (writefds && FD_ISSET(i, writefds))
{
events |= EReadyForWriting;
}
if (exceptfds && FD_ISSET(i, exceptfds))
{
events |= EAnyException;
}
if (!events)
{
continue;
}
if (iFids.At(i, fdesc) == KErrNone)
{
fdesc->TweakWatchedEvents(events);
err = fdesc->NotifyActivity(events, *reqarray[numReqs], timeout);
if (err == KErrCompletion)
{
// No async call was issued. Try a Poll
TInt ready = fdesc->Poll(events);
if (ready & EReadyForReading)
{
FD_SET(i, &retreadfds);
++nDescriptorsSet;
}
if (ready & EReadyForWriting)
{
FD_SET(i, &retwritefds);
++nDescriptorsSet;
}
if (ready & EAnyException)
{
FD_SET(i, &retexceptfds);
++nDescriptorsSet;
}
break;
}
else if (err != KErrNone)
{
// Notification registration failed. Cleanup and return.
nDescriptorsSet = MapError(err, anErrno);
break;
}
else
{
// Issued an asynchronus request. Increment valid requests count.
reqfds[numReqs++] = i;
}
}
}
if (err != KErrNone)
{
if (timeout)
{
timer.Close();
}
for(TInt i= 0; i < numReqs; i++)
{
if (iFids.At(reqfds[i], fdesc) != KErrNone)
{
continue;
}
fdesc->CancelNotify();
}
goto bailout;
}
if (timeout)
{
timer.After(*reqarray[numReqs+arraycount], timeout);
// Wait for any request to complete
CLocalSystemInterface::WaitForNRequest(*reqarray, numReqs+arraycount+1);
if( (*reqarray[numReqs+arraycount]).Int() == KRequestPending)
{
// The timer hasn't fired yet.
timer.Cancel();
}
else
{
anErrno = ETIMEDOUT;
}
timer.Close();
// No need to set onedown to True as numReqs does not include the Timer request
}
else
{
CLocalSystemInterface::WaitForNRequest(*reqarray, numReqs+arraycount);
// Completion Status of one request has been gathered
onedown = ETrue;
}
for (int i = 0; i < numReqs; ++i)
{
if (iFids.At(reqfds[i], fdesc) != KErrNone)
{
continue;
}
if ( (*reqarray[i]).Int() != KRequestPending )
{
TInt readyevents = fdesc->TweakReadyEvents((*reqarray[i]).Int());
TInt event_marked = EFalse;
if (readfds && FD_ISSET(reqfds[i], readfds) && (readyevents & EReadyForReading))
{
FD_SET(reqfds[i], &retreadfds);
++nDescriptorsSet;
event_marked = ETrue;
}
if(writefds && FD_ISSET(reqfds[i], writefds) && (readyevents & EReadyForWriting) )
{
FD_SET(reqfds[i], &retwritefds);
event_marked = ETrue;
++nDescriptorsSet;
}
if(exceptfds && FD_ISSET(reqfds[i], exceptfds) && (readyevents & EAnyException))
{
if (!fdesc->GetConnectionProgress() || !event_marked)
{
FD_SET(reqfds[i], &retexceptfds);
++nDescriptorsSet;
}
}
}
else
{
//Cancel all other requests.
fdesc->CancelNotify();
}
}
if (readfds)
{
FD_COPY(&retreadfds, readfds);
}
if (writefds)
{
FD_COPY(&retwritefds, writefds);
}
if (exceptfds)
{
FD_COPY(&retexceptfds, exceptfds);
}
bailout:
if (onedown && numReqs)
{
--numReqs;
}
// consume all completed/cancelled requests
while(numReqs--)
{
User::WaitForAnyRequest();
}
Free(reqarray);
Free(reqobjarray);
Free(reqfds);
return nDescriptorsSet;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::system
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::system(const wchar_t* aCmd, const wchar_t* aCmdArg, int& anErrno)
{
return iFids.system(aCmd, aCmdArg, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::posix_spawn
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::posix_spawn(int* pid, const wchar_t* wpath,
const posix_spawn_file_actions_t* file_actions,
const posix_spawnattr_t* attrp,
const wchar_t* wargs,
wchar_t** wenvp)
{
return iFids.posix_spawn(pid, wpath, file_actions, attrp, wargs, wenvp);
}
#ifdef SYMBIAN_OE_POSIX_SIGNALS
// -----------------------------------------------------------------------------
// CLocalSystemInterface::kill
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::kill(pid_t pid, int sig , int& anErrno)
{
EnsureSignalsInitialized();
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
TInt err = KErrArgument;
TProcessId lPid(pid);
RProcess lTargetProcess;
if(pid <= 0)
{
anErrno = ENOTSUP;
return -1;
}
if(lTargetProcess.Open(lPid) != KErrNone)
{
anErrno = ESRCH;
return -1;
}
else
{
lTargetProcess.Close();
}
if(sig == 0)
{
return MapError(KErrNone, anErrno);
}
if(sig < 1 || sig > SIGRTMAX)
{
return MapError(err, anErrno); // check for linux return value. standard says != 0
}
err = iSignalSession.SendSignal(pid,sig);
return MapError(err, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::raise
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::raise(int sig , int& anErrno)
{
EnsureSignalsInitialized();
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
TInt err = KErrArgument;
if(sig < 1 || sig > SIGRTMAX)
{
return MapError(err, anErrno); // check for linux return value. standard says != 0
}
// mutex protect
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::ESignal;
lMsg.mSignal = (TUint8)sig;
TBuf8<KSigMsgLength> lMsgBuf;
lMsg.Marshall(lMsgBuf);
err = iSignalWritePipe.Write(lMsgBuf,KSigMsgLength);
if(err >= 0)
return MapError(KErrNone,anErrno);
else
return MapError(err, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigqueue
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigqueue(pid_t pid, int sig, const union sigval val, int& anErrno)
{
EnsureSignalsInitialized();
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
TInt err = KErrArgument;
TProcessId lPid(pid);
RProcess lTargetProcess;
if(lTargetProcess.Open(lPid) != KErrNone)
{
anErrno = ESRCH;
return -1;
}
else
{
lTargetProcess.Close();
}
if(sig == 0)
{
return MapError(KErrNone, anErrno);
}
if(sig < 1 || sig > SIGRTMAX)
{
return MapError(err, anErrno); // check for linux return value. standard says != 0
}
err = iSignalSession.SendSignalValue(pid,sig,val.sival_int);
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigfillset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigfillset(sigset_t *set, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(set == 0)
return MapError(KErrArgument, anErrno);
SIG_FILL_SIGSET(*set);
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigaddset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigaddset(sigset_t *set, int signo, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(signo < 1 || signo > SIGRTMAX || set == 0)
return MapError(KErrArgument, anErrno);
SIG_ADD_SIGNAL_TO_SET(signo,*set);
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigdelset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigdelset(sigset_t *set, int signo, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(signo < 1 || signo > SIGRTMAX || set == 0)
return MapError(KErrArgument, anErrno);
SIG_REMOVE_SIGNAL_FROM_SET(signo,*set);
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigismember
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigismember(const sigset_t *set, int signo, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(signo < 1 || signo > SIGRTMAX || set == 0)
return MapError(KErrArgument, anErrno);
if(SIG_SIGNAL_PRESENT_IN_SIGSET(signo,*set))
return 1;
else
return 0;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigandset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigandset(sigset_t * set, const sigset_t * left, const sigset_t * right, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(set == 0 || left == 0 || right == 0)
return MapError(KErrArgument, anErrno);
*set = *left & *right;
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigorset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigorset(sigset_t * set, const sigset_t * left, const sigset_t * right, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(set == 0 || left == 0 || right == 0)
return MapError(KErrArgument, anErrno);
*set = *left | *right;
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigisemptyset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigisemptyset(const sigset_t * set, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(set == 0)
return MapError(KErrArgument, anErrno);
anErrno = 0;
if(SIG_ISEMPTY_SIGSET(*set))
return 1;
else
return 0;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigemptyset
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigemptyset(sigset_t * set, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
if(set == 0)
return MapError(KErrArgument, anErrno);
SIG_EMPTY_SIGSET(*set);
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigprocmask
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigprocmask(int how, const sigset_t *set, sigset_t *oset, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
TUint64 lOldMask = iSigMask;
TBool lIsUnblocked = EFalse;
if(oset)
{
*oset = (sigset_t)iSigMask;
}
if(set)
{
switch(how)
{
case SIG_BLOCK:
iSigMask |= (TUint64)*set;
break;
case SIG_SETMASK:
iSigMask = (TUint64)*set;
lIsUnblocked = ETrue;
break;
case SIG_UNBLOCK:
iSigMask &= ~(TUint64)*set;
lIsUnblocked = ETrue;
break;
default:
return MapError(KErrArgument, anErrno);
}
}
// unsetting the bits of signals that cannot be blocked
// no error is to be thrown in this case
SIG_REMOVE_SIGNAL_FROM_SET(SIGKILL,iSigMask);
SIG_REMOVE_SIGNAL_FROM_SET(SIGSTOP,iSigMask);
if(lIsUnblocked)
{
TUint64 lDiffSet = (lOldMask & (~iSigMask));
if(lDiffSet != 0)
{
TInt lIdx = 0;
for(lIdx = 1;lIdx <= SIGRTMAX;lIdx++)
{
if(SIG_SIGNAL_PRESENT_IN_SIGSET(lIdx,lDiffSet))
{
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::EDequeueSignal;
lMsg.mSignal = (TUint8)lIdx;
TBuf8<KSigMsgLength> lMsgBuf;
lMsg.Marshall(lMsgBuf);
iSignalWritePipe.Write(lMsgBuf,KSigMsgLength);
}
}
// scan and dequeue
}
}
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sighold
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sighold(int signo, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
if(signo < 1 || signo > SIGRTMAX)
return MapError(KErrArgument, anErrno);
SIG_ADD_SIGNAL_TO_SET(signo,iSigMask);
SIG_REMOVE_SIGNAL_FROM_SET(SIGKILL,iSigMask);
SIG_REMOVE_SIGNAL_FROM_SET(SIGSTOP,iSigMask);
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigrelse
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigrelse(int signo, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
TUint64 lPrevMask = iSigMask;
if(signo < 1 || signo > SIGRTMAX)
return MapError(KErrArgument, anErrno);
SIG_REMOVE_SIGNAL_FROM_SET(signo,iSigMask);
if(lPrevMask != iSigMask)
{
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::EDequeueSignal;
lMsg.mSignal = (TUint8)signo;
TBuf8<KSigMsgLength> lMsgBuf;
lMsg.Marshall(lMsgBuf);
iSignalWritePipe.Write(lMsgBuf,KSigMsgLength);
}
return MapError(KErrNone, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigpause
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigpause(int signo, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
TUint64 lPrevMask = iSigMask;
TUint64 lWaitSet = 0;
TSignalMessage lMsg;
if(signo < 1 || signo > SIGRTMAX)
return MapError(KErrArgument, anErrno);
SIG_REMOVE_SIGNAL_FROM_SET(signo,iSigMask);
SIG_ADD_SIGNAL_TO_SET(signo,lWaitSet);
SigWaitInternal(lWaitSet,&lMsg,0);
iSigMask = lPrevMask;
HandleSignal(lMsg,ETrue);
anErrno = EINTR;
return -1;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigwait
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigwait(const sigset_t *set, int *sig, int& anErrno)
{
if(!iSignalsInitialized)
{
return ENOTSUP;
}
EnsureSignalsInitialized();
anErrno = anErrno; // to supress unused arg warning. sigwait doesn't set errno, it returns it.
if(set == 0)
return EINVAL;
if(SIG_ISEMPTY_SIGSET(*set))
return EINVAL;
TUint64 lTemp = *set;
SIG_REMOVE_SIGNAL_FROM_SET(SIGKILL,lTemp);
SIG_REMOVE_SIGNAL_FROM_SET(SIGSTOP,lTemp);
if(lTemp == 0 && !SIG_ISEMPTY_SIGSET(set))
return 0;
TInt lRetVal = KErrNone;
TSignalMessage lMsg;
lRetVal = SigWaitInternal((TUint64)*set,&lMsg,0);
if(lRetVal == KErrNone)
{
if(lMsg.mType == TSignalMessage::ESignal)
{
if(sig)
*sig = lMsg.mSignal;
}
else if(lMsg.mType == TSignalMessage::ESignalValuePair)
{
if(sig)
*sig = lMsg.mSigVal.mSignal;
}
else if(lMsg.mType == TSignalMessage::ERtTimerSignal)
{
if(sig)
*sig = lMsg.mRtSignal.mSignal;
}
}
else
{
return EINVAL;
}
return 0;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigtimedwait
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigtimedwait(const sigset_t *set,
siginfo_t *info, const struct timespec *timeout, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
TBool lTimeCheckFailed = EFalse;
EnsureSignalsInitialized();
if(set == 0 || timeout == 0)
{
anErrno = EINVAL;
return -1;
}
if(SIG_ISEMPTY_SIGSET(*set))
{
anErrno = EINVAL;
return -1;
}
if(timeout->tv_sec == 0 && timeout->tv_nsec == 0)
{
anErrno = EINVAL;
return -1;
}
if( (timeout->tv_sec*1000*1000 > 0x7FFFFFFF) || // 0x7FFFFFFF (maximum positive value of int32)
(timeout->tv_sec < 0) ||
(timeout->tv_nsec >= 1000000000) ||
(timeout->tv_nsec < 0) )
{
lTimeCheckFailed = ETrue;
}
TUint64 lTemp = *set;
SIG_REMOVE_SIGNAL_FROM_SET(SIGKILL,lTemp);
SIG_REMOVE_SIGNAL_FROM_SET(SIGSTOP,lTemp);
if(lTemp == 0 && !SIG_ISEMPTY_SIGSET(set))
return 0;
TInt lTimeout = timeout->tv_sec*1000*1000 + timeout->tv_nsec/1000;
if(lTimeout < 0)
{
lTimeCheckFailed = ETrue;
}
TInt lRetVal = KErrNone;
TInt lSigNum = 0;
TSignalMessage lMsg;
lRetVal = SigWaitInternal((TUint64)*set,&lMsg,lTimeout,lTimeCheckFailed);
if(lRetVal == KErrNone)
{
if(lMsg.mType == TSignalMessage::ESignal)
{
lSigNum = lMsg.mSignal;
if(info)
{
info->si_signo = lSigNum;
info->si_value.sival_int = 0;
}
}
else if(lMsg.mType == TSignalMessage::ESignalValuePair)
{
lSigNum = lMsg.mSigVal.mSignal;
if(info)
{
info->si_signo = lSigNum;
info->si_value.sival_int = (int)lMsg.mSigVal.mValue;
}
}
else if(lMsg.mType == TSignalMessage::ERtTimerSignal)
{
lSigNum = lMsg.mRtSignal.mSignal;
if(info)
{
info->si_signo = lSigNum;
info->si_value.sival_int = 0;
}
}
}
else if (lRetVal == KErrTimedOut)
{
anErrno = EAGAIN;
return -1;
}
else
{
anErrno = EINVAL;
return -1;
}
return lSigNum;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigwaitinfo
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigwaitinfo(const sigset_t *set, siginfo_t *info, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
if(set == 0)
{
anErrno = EINVAL;
return -1;
}
if(SIG_ISEMPTY_SIGSET(*set))
{
anErrno = EINVAL;
return -1;
}
TUint64 lTemp = *set;
SIG_REMOVE_SIGNAL_FROM_SET(SIGKILL,lTemp);
SIG_REMOVE_SIGNAL_FROM_SET(SIGSTOP,lTemp);
if(lTemp == 0 && !SIG_ISEMPTY_SIGSET(set))
return 0;
TInt lRetVal = KErrNone;
TInt lSigNum = 0;
TSignalMessage lMsg;
lRetVal = SigWaitInternal((TUint64)*set,&lMsg,0);
if(lRetVal == KErrNone)
{
if(lMsg.mType == TSignalMessage::ESignal)
{
lSigNum = lMsg.mSignal;
if(info)
{
info->si_signo = lSigNum;
info->si_value.sival_int = 0;
}
}
else if(lMsg.mType == TSignalMessage::ESignalValuePair)
{
lSigNum = lMsg.mSigVal.mSignal;
if(info)
{
info->si_signo = lSigNum;
info->si_value.sival_int = (int)lMsg.mSigVal.mValue;
}
}
else if(lMsg.mType == TSignalMessage::ERtTimerSignal)
{
lSigNum = lMsg.mRtSignal.mSignal;
if(info)
{
info->si_signo = lSigNum;
info->si_value.sival_int = 0;
}
}
else
{
anErrno = EINVAL;
return -1;
}
}
return lSigNum;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigaction
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigaction(int aSigNum, const struct sigaction *act, struct sigaction *oact, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
if(aSigNum < 1 || aSigNum > SIGRTMAX || aSigNum == SIGKILL || aSigNum == SIGSTOP)
{
return MapError(KErrArgument,anErrno);
}
if(act && (act->sa_flags & (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART| SA_NOCLDWAIT))) //Whar abt SA_NODEFER
{
anErrno = ENOTSUP;
return -1;
}
iSigHandlerMutex.Wait();
if(oact)
{
if( (iSigActions[aSigNum-1].iSigFlags & SA_SIGINFO)
&& iSigActions[aSigNum-1].iSigAction)
{
oact->sa_flags = iSigActions[aSigNum-1].iSigFlags;
oact->sa_sigaction = iSigActions[aSigNum-1].iSigAction;
}
else
{
oact->sa_flags = iSigActions[aSigNum-1].iSigFlags;
oact->sa_handler = iSigActions[aSigNum-1].iSigHandler;
}
}
if(act)
{
if(act->sa_flags & SA_SIGINFO)
{
iSigActions[aSigNum-1].iSigAction = act->sa_sigaction;
iSigActions[aSigNum-1].iSigFlags = act->sa_flags;
}
else
{
iSigActions[aSigNum-1].iSigHandler = act->sa_handler;
iSigActions[aSigNum-1].iSigAction = 0;
iSigActions[aSigNum-1].iSigFlags = act->sa_flags;
}
}
iSigHandlerMutex.Signal();
return MapError(KErrNone,anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigset
// -----------------------------------------------------------------------------
//
TSignalHandler CLocalSystemInterface::sigset(int aSigNum, TSignalHandler disp, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return SIG_ERR;
}
TUint64 lOldMask = iSigMask;
EnsureSignalsInitialized();
if(aSigNum < 1 || aSigNum > SIGRTMAX || aSigNum == SIGKILL || aSigNum == SIGSTOP)
{
anErrno = EINVAL;
return SIG_ERR;
}
TSignalHandler lOldHandler = iSigActions[aSigNum-1].iSigHandler;
if(disp == SIG_HOLD)
{
SIG_ADD_SIGNAL_TO_SET(aSigNum,iSigMask);
}
else
{
iSigHandlerMutex.Wait();
iSigActions[aSigNum-1].iSigHandler = disp;
iSigActions[aSigNum-1].iSigAction = 0;
iSigActions[aSigNum-1].iSigFlags = 0;
iSigHandlerMutex.Signal();
SIG_REMOVE_SIGNAL_FROM_SET(aSigNum,iSigMask);
}
if(SIG_SIGNAL_PRESENT_IN_SIGSET(aSigNum,lOldMask))
return SIG_HOLD;
else
return lOldHandler;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::bsd_signal
// -----------------------------------------------------------------------------
//
TSignalHandler CLocalSystemInterface::bsd_signal(int aSigNum, TSignalHandler aFunc,int& anErrno)
{
return signal(aSigNum,aFunc,anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::signal
// -----------------------------------------------------------------------------
//
TSignalHandler CLocalSystemInterface::signal(int aSigNum, TSignalHandler aFunc,int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return SIG_ERR;
}
EnsureSignalsInitialized();
if(aSigNum < 1 || aSigNum > SIGRTMAX || aSigNum == SIGKILL || aSigNum == SIGSTOP)
{
anErrno = EINVAL;
return SIG_ERR;
}
iSigHandlerMutex.Wait();
TSignalHandler lOldHandler = iSigActions[aSigNum-1].iSigHandler;
iSigActions[aSigNum-1].iSigHandler = aFunc;
iSigActions[aSigNum-1].iSigAction = 0;
iSigActions[aSigNum-1].iSigFlags = 0;
iSigHandlerMutex.Signal();
return lOldHandler;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigignore
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigignore(int aSigNum, int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
if(aSigNum < 1 || aSigNum > SIGRTMAX || aSigNum == SIGKILL || aSigNum == SIGSTOP)
{
anErrno = EINVAL;
return -1;
}
iSigHandlerMutex.Wait();
iSigActions[aSigNum-1].iSigHandler = SIG_IGN;
iSigActions[aSigNum-1].iSigAction = 0;
iSigActions[aSigNum-1].iSigFlags = 0;
iSigHandlerMutex.Signal();
return 0;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::sigpending
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::sigpending(sigset_t *set,int& anErrno)
{
if(!iSignalsInitialized)
{
anErrno = ENOTSUP;
return -1;
}
EnsureSignalsInitialized();
if(set == 0)
{
anErrno = EFAULT;
return -1;
}
SIG_EMPTY_SIGSET(*set);
TInt lIdx = 0;
for(lIdx = 0;lIdx < iBlockedSigArray.Count(); lIdx++)
{
TUint8 lSigNum = 0;
if(iBlockedSigArray[lIdx].mType == TSignalMessage::ESignal)
lSigNum = iBlockedSigArray[lIdx].mSignal;
else if(iBlockedSigArray[lIdx].mType == TSignalMessage::ESignalValuePair)
lSigNum = iBlockedSigArray[lIdx].mSigVal.mSignal;
else if(iBlockedSigArray[lIdx].mType == TSignalMessage::ERtTimerSignal)
lSigNum = iBlockedSigArray[lIdx].mRtSignal.mSignal;
SIG_ADD_SIGNAL_TO_SET(lSigNum,*set);
}
return MapError(KErrNone,anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::alarm
// -----------------------------------------------------------------------------
//
unsigned int CLocalSystemInterface::alarm(unsigned int seconds)
{
if(!iSignalsInitialized)
{
return 0;
}
EnsureSignalsInitialized();
TTime lCurrentTime;
TTimeIntervalSeconds lTimeLapse;
unsigned int lTimeLeft = 0;
if(iIsTimerActive)
{
lCurrentTime.HomeTime();
lCurrentTime.SecondsFrom(iAlarmStartTime,lTimeLapse);
lTimeLeft = iCurrentTimeout - lTimeLapse.Int();
if((int)lTimeLeft < 0)
lTimeLeft = 0;
}
iCurrentTimeout = seconds;
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::EAlarmRegistration;
lMsg.mTimeOut = seconds;
TBuf8<KSigMsgLength> lMsgBuf;
lMsg.Marshall(lMsgBuf);
iSignalWritePipe.Write(lMsgBuf,KSigMsgLength);
return lTimeLeft;
}
#ifdef SYMBIAN_OE_LIBRT
// -----------------------------------------------------------------------------
// CLocalSystemInterface::FindTimer
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::FindTimer(const TInt& aTimerId)
{
iTimerOverrunsMutex.Wait();
TInt lIndex = KErrNotFound;
TInt lTimerCnt = iTimerOverruns.Count();
for(TInt lIdx = 0; lIdx < lTimerCnt; lIdx++)
{
if(iTimerOverruns[lIdx].iTimerId == aTimerId)
{
lIndex = lIdx;
break;
}
}
iTimerOverrunsMutex.Signal();
return lIndex;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::AddTimer
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::AddTimer(const TInt& aTimerId)
{
TInt err;
if (FindTimer(aTimerId) >= 0)
{
err = KErrNone;
}
else
{
TOverrun lOverrun(aTimerId);
iTimerOverrunsMutex.Wait();
RHeap* oHeap = User::SwitchHeap(iPrivateHeap);
err = iTimerOverruns.Append(lOverrun);
User::SwitchHeap(oHeap);
if(!err)
{
iTimerOverruns[iTimerOverruns.Count()-1].iTimerId = aTimerId;
}
iTimerOverrunsMutex.Signal();
}
return err;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::DeleteTimer
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::DeleteTimer(const TInt& aTimerId)
{
TInt lRet = FindTimer(aTimerId);
if(lRet >= 0)
{
iTimerOverrunsMutex.Wait();
RHeap* oHeap = User::SwitchHeap(iPrivateHeap);
iTimerOverruns.Remove(lRet);
User::SwitchHeap(oHeap);
iTimerOverrunsMutex.Signal();
return KErrNone;
}
return lRet;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::IncrementOverrun
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::IncrementOverrun(const TInt& aTimerId)
{
TInt lRet = FindTimer(aTimerId);
if(lRet >= 0)
{
iTimerOverrunsMutex.Wait();
iTimerOverruns[lRet].Overruns++;
iTimerOverrunsMutex.Signal();
return iTimerOverruns[lRet].Overruns;
}
return lRet;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::ResetOverrun
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::ResetOverrun(const TInt& aTimerId)
{
TInt lRet = FindTimer(aTimerId);
if(lRet >= 0)
{
iTimerOverrunsMutex.Wait();
iTimerOverruns[lRet].Overruns = 0;
iTimerOverrunsMutex.Signal();
return KErrNone;
}
return KErrNotFound;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::Overrun
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::Overrun(const TInt& aTimerId)
{
TInt lRet = FindTimer(aTimerId);
if(lRet >= 0)
{
return iTimerOverruns[lRet].Overruns;
}
return KErrNotFound;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::RaiseTimerSignal
// -----------------------------------------------------------------------------
//
EXPORT_C TInt CLocalSystemInterface::RaiseTimerSignal(int sig, int timerid)
{
EnsureSignalsInitialized();
TInt err = KErrArgument;
if(sig < 1 || sig > SIGRTMAX)
{
return err;
}
// mutex protect
TSignalMessage lMsg;
lMsg.mType = TSignalMessage::ERtTimerSignal;
lMsg.mRtSignal.mSignal = (TUint8)sig;
lMsg.mRtSignal.mTimerId = timerid;
TBuf8<KSigMsgLength> lMsgBuf;
lMsg.Marshall(lMsgBuf);
err = iSignalWritePipe.WriteBlocking(lMsgBuf,KSigMsgLength);
if(err >= 0)
return KErrNone;
return err;
}
#endif //SYMBIAN_OE_LIBRT
#endif // SYMBIAN_OE_POSIX_SIGNALS
// -----------------------------------------------------------------------------
// CLocalSystemInterface::GetDirName
// Implementation for GetDirName
// This will return the name of the directory corresponding to the aFid
// This wont set any error code in case of error.
// Returns the name on success else NULL
// -----------------------------------------------------------------------------
//
const wchar_t* CLocalSystemInterface::GetDirName (int aFid)
{
//Get the CFileDescBase at the index aFid
CFileDescBase* desc = NULL;
TInt err = iFids.At(aFid, desc);
if ( !err )
{
//Cast it back to CDirectoryDesc
CDirectoryDesc* dirDesc = static_cast<CDirectoryDesc*> (desc);
return dirDesc->GetDirName();
}
return (const wchar_t*)NULL;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::Truncate
// Implementation for Truncate
// This will Truncate a file represented by aFid
// Returns the success/error code on completion
// -----------------------------------------------------------------------------
//
EXPORT_C int CLocalSystemInterface::Truncate(int aFid, off_t anOffset, int& anErrno)
{
TInt err = KErrArgument;
#if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
off_t offset = anOffset;
#else
TInt offset = (TInt)anOffset;
#endif //SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS
//Proceed only if offset is non-negetive number
if ( offset >= 0 )
{//Get the CFileDescBase at the index aFid
CFileDescBase* desc = NULL;
err = iFids.At(aFid, desc);
if ( !err )
{
err = desc->Truncate(offset);
if( err == KErrAccessDenied )
{
//Ensure that, it will set errno as EINVAL
err = KErrArgument;
}
}
}
return MapError(err, anErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::GetDesc
// Implementation for GetDesc
// This will return the CFileDescBase object corresponding to aFid
// -----------------------------------------------------------------------------
//
EXPORT_C CFileDescBase* CLocalSystemInterface::GetDesc(int aFid)
{
CFileDescBase* fileDesc = NULL;
//coverity[unchecked_value]
iFids.At(aFid, fileDesc);
return fileDesc;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::FileSession
// This will return the file session
// -----------------------------------------------------------------------------
//
EXPORT_C RFs& CLocalSystemInterface::FileSession()
{
return iFs;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::CommServSession
// This will return the communication server session
// -----------------------------------------------------------------------------
//
RCommServ& CLocalSystemInterface::CommServSession()
{
return iCs;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::SockServSession
// This will return the socket server session
// -----------------------------------------------------------------------------
//
RSocketServ& CLocalSystemInterface::SockServSession()
{
return iSs;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::Alloc
// Dynamic Memory related APIs
// Allocates memory in the private heap
// -----------------------------------------------------------------------------
//
EXPORT_C void* CLocalSystemInterface::Alloc(size_t aNBytes)
{
return iPrivateHeap->AllocZ(aNBytes);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::ReAlloc
// Dynamic Memory related APIs
// Allocates memory in the private heap
// -----------------------------------------------------------------------------
//
EXPORT_C void* CLocalSystemInterface::ReAlloc(void* aPtr, size_t aNBytes)
{
return iPrivateHeap->ReAlloc(aPtr, aNBytes);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::Free
// Dynamic Memory related APIs
// Frees memory in the private heap
// -----------------------------------------------------------------------------
//
EXPORT_C void CLocalSystemInterface::Free(void* aPtr)
{
iPrivateHeap->Free(aPtr);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::AllocTLD
// Dynamic Memory related APIs
// Allocates memory for the thread's TLD and cleans up TLD of dead threads
// -----------------------------------------------------------------------------
//
EXPORT_C void* CLocalSystemInterface::AllocTLD(TInt aSize)
{
// Allocate memory for reent structure on private heap
void* ptr = iPrivateHeap->AllocZ(aSize);
iTLDListLock.Wait();
RHeap* oheap = User::SwitchHeap(iPrivateHeap);
TThreadId caller = RThread().Id();
RThread thrd;
TInt idx = -1;
TInt tcount = iTLDInfoList.Count();
for (int i = 0; i < tcount; ++i)
{
TTLDInfo& tldinf = iTLDInfoList[i];
TInt ptrcount = tldinf.iPtrs.Count();
if (!ptrcount)
{
// This slot has already been freed. Save here?
idx = i;
continue;
}
TInt err = thrd.Open(tldinf.iTid);
if (err != KErrNone || thrd.ExitType() != EExitPending)
{
// This thread is dead. Bury it.
for (int j = 0; j < ptrcount; ++j)
{
iPrivateHeap->FreeZ(tldinf.iPtrs[j]);
}
(tldinf.iPtrs).Reset();
// this slot can be reused. Save here?
idx = i;
}
else
{
// Points to a live thread
if (tldinf.iTid == caller)
{
// This is the calling thread. We must save the TLD ptr here
idx = i;
}
}
}
// Only if the initial allocation succeded
if (ptr != NULL)
{
// No free slot. No cleaned-up slots.
if (idx == -1)
{
iTLDInfoList.Append(TTLDInfo(caller, ptr));
}
else
{
// Wouldn't hurt even if it is already set
iTLDInfoList[idx].iTid = caller;
iTLDInfoList[idx].iPtrs.Append(ptr);
}
}
User::SwitchHeap(oheap);
iTLDListLock.Signal();
return ptr;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::Heap
//Return the private Heap memory
// -----------------------------------------------------------------------------
//
EXPORT_C RHeap* CLocalSystemInterface::Heap()
{
return iPrivateHeap;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::CommsSessionLock
//Return the Comms Server Lock
// -----------------------------------------------------------------------------
//
RFastLock& CLocalSystemInterface::CommsSessionLock()
{
return iCSLock;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::CommsSessionLock
//Return reference to file table
// -----------------------------------------------------------------------------
//
const CFileTable& CLocalSystemInterface::FileTable() const
{
return iFids;
}
// ---------------------------------------------------------------------------------
// CLocalSystemInterface::WaitForNRequest
// Wait for any one of the input asynchronous requests to complete
// Used in lieu of User::WaitForNRequest because of need to support pre-Argus builds
// ---------------------------------------------------------------------------------
//
void CLocalSystemInterface::WaitForNRequest(TRequestStatus aStatusArray[], TInt aNum)
{
if (aNum)
{
// used to keep count of requests we have not been asked to wait for
TInt nOther = -1;
TBool done = EFalse;
do
{
++nOther;
User::WaitForAnyRequest();
for (TInt i = 0; i < aNum; ++i)
{
if (aStatusArray[i].Int() != KRequestPending)
{
done = ETrue;
break;
}
}
} while (!done);
if (nOther)
{
// Adjust the thread's signal semaphore to account for the requests
// we were not asked to wait for.
RThread thrd;
for (TInt i = 0; i < nOther; ++i)
{
thrd.RequestSignal();
}
}
}
}
/*
CLocalSystemInterface::AddToDirList
Appends Open Directory handle to a RPointerArray array and retuns 0
*/
int CLocalSystemInterface::AddToDirList(DIR *aDir)
{
RHeap* oheap = User::SwitchHeap(iPrivateHeap);
TInt ret = iOpenDirList.Append(aDir);
User::SwitchHeap(oheap);
return ret;
}
/*
CLocalSystemInterface::RemoveFromDirList
Remove the Directory handle from the array and closes the array.
*/
int CLocalSystemInterface::RemoveDirFromList(DIR* aDir)
{
TInt ret = iOpenDirList.Find(aDir);
if(ret != KErrNotFound)
{
RHeap* oheap = User::SwitchHeap(iPrivateHeap);
iOpenDirList.Remove(ret);
User::SwitchHeap(oheap);
}
return ret;
}
/*
TBool CLocalSystemInterface::ValidateInDirList
Validates the Directory handle with the array and returns ETrue upon success
else returns EFalse.
*/
int CLocalSystemInterface::FindInDirList(DIR* aDir)
{
return(iOpenDirList.Find(aDir));
}
//
//int CLocalSystemInterface::SetEcho(int aFd, TBool aEcho, int& aErrno)
//
//Set the echo flag of the suppported console abstractions matching
//the given fd.
//
int CLocalSystemInterface::SetEcho(int aFd, TUint8 aEcho, int& aErrno)
{
return iFids.SetEcho(aFd, aEcho, aErrno);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::ReadRecordFromIapTableL
//
// Helper function to read a record from the IAP table
// -----------------------------------------------------------------------------
//
void CLocalSystemInterface::ReadRecordFromIapTableL(CCommsDbTableView* aView, TAccessPointRecord &aRecord)
{
aView->ReadUintL(TPtrC(COMMDB_ID), aRecord.iId);
aView->ReadTextL(TPtrC(COMMDB_NAME), aRecord.iName);
aView->ReadUintL(TPtrC(IAP_BEARER), aRecord.iBearer);
aView->ReadUintL(TPtrC(IAP_NETWORK), aRecord.iNetwork);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::GetConnectionPreferencesL
//
// Get the connection preferences from an IAP name.
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::GetConnectionPreferencesL(TBuf<KCommsDbSvrMaxColumnNameLength> aIapName,
TCommDbConnPref &aConnPref)
{
TInt err = KErrNone;
//Open the database and create the IAP view.
CCommsDatabase *iApDb = CCommsDatabase::NewL(EDatabaseTypeIAP);
CleanupStack::PushL(iApDb);
iApDb->ShowHiddenRecords();
//The following pushes the view onto the cleanup stack
CCommsDbTableView *view = iApDb->OpenTableLC(TPtrC(IAP));
//Iterate through the records to find the matching entry
TAccessPointRecord apRecord;
err = view->GotoFirstRecord();
while (err == KErrNone)
{
//The following function will leave in case of error
ReadRecordFromIapTableL(view, apRecord);
if (aIapName == apRecord.iName)
break;
err = view->GotoNextRecord();
}
CleanupStack::PopAndDestroy(); //Free the view
CleanupStack::PopAndDestroy(iApDb); //Free the db itself
if(err != KErrNone) //Record not found
return KErrNotFound;
aConnPref.SetIapId(apRecord.iId);
aConnPref.SetNetId(apRecord.iNetwork);
aConnPref.SetBearerSet(apRecord.iBearer);
aConnPref.SetDialogPreference(ECommDbDialogPrefDoNotPrompt);
aConnPref.SetDirection(ECommDbConnectionDirectionUnknown);
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::StartDefConnection
//
// Helper function for the setdefaultif() API to start the
// default RConnection with/without preferences
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::StartDefConnection()
{
TInt err = iDefConnection.Open(iSs);
if( err != KErrNone )
return err;
// If connection preference is set
if (iDefConnPref)
{
err = iDefConnection.Start(*iDefConnPref);
}
else // No connection preference available
{
err = iDefConnection.Start();
}
if (err != KErrNone)
iDefConnection.Close();
return err;
}
TInt CLocalSystemInterface::unsetdefaultif(TBool allow_bringup)
{
iDefConnLock.Wait();
if (iDefConnection.SubSessionHandle() != 0)
{
TUint count = iSocketArray.Count();
for (TInt i = 0; i < count; ++i)
{
iSocketArray[i]->TempClose();
}
iDefConnection.Close();
}
RHeap* oheap = User::SwitchHeap(iPrivateHeap);
iSocketArray.Reset();
if (iDefConnPref)
{
if (iDefConnPref->ExtensionId() == TConnPref::EConnPrefSnap)
{
delete (TCommSnapPref*)iDefConnPref;
}
else
{
delete (TCommDbConnPref*)iDefConnPref;
}
}
User::SwitchHeap(oheap);
iDefConnPref = NULL;
iDefConnResurrect = allow_bringup;
iDefConnLock.Signal();
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::setdefaultif
//
// Set the default interface for network operations
// -----------------------------------------------------------------------------
//
int CLocalSystemInterface::setdefaultif(const struct ifreq* aIfReq)
{
// Do this in any case - whether the argument be a valid pref or NULL
iDefConnResurrect = ETrue;
// If the argument is NULL, tear down existing connection
if (aIfReq == NULL)
{
return unsetdefaultif();
}
TPtrC8 namePtr((TText8*)aIfReq->ifr_name);
TBuf<KCommsDbSvrMaxColumnNameLength> name;
TInt err = CnvUtfConverter::ConvertToUnicodeFromUtf8(name, namePtr);
if (err != KErrNone)
return err;
if (name.Length() == 0)
{
// interface name is an empty string, SNAP id is specified in ifr_ifru.snap_id
if (iDefConnPref && iDefConnPref->ExtensionId() == TConnPref::EConnPrefSnap)
{
((TCommSnapPref*)iDefConnPref)->SetSnap(aIfReq->ifr_ifru.snap_id);
return KErrNone;
}
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
delete (TCommDbConnPref*)iDefConnPref; // may be a delete(NULL)
iDefConnPref = new TCommSnapPref;
User::SwitchHeap(oldHeap);
if (!iDefConnPref)
{
return KErrNoMemory;
}
((TCommSnapPref*)iDefConnPref)->SetSnap(aIfReq->ifr_ifru.snap_id);
return KErrNone;
}
CTrapCleanup *cleanupStack = NULL;
// Create a cleanup stack if one doesn't exist
if (User::TrapHandler() == NULL)
{
cleanupStack = CTrapCleanup::New();
if (cleanupStack == NULL)
return KErrNoMemory;
}
if (iDefConnPref && iDefConnPref->ExtensionId() == TConnPref::EConnPrefCommDb)
{
TRAP(err, (err = GetConnectionPreferencesL(name, *(TCommDbConnPref*)iDefConnPref)));
}
else
{
RHeap *oldHeap = User::SwitchHeap(iPrivateHeap);
delete (TCommSnapPref*)iDefConnPref;
iDefConnPref = new TCommDbConnPref;
User::SwitchHeap(oldHeap);
if (iDefConnPref)
{
TRAP(err, (err = GetConnectionPreferencesL(name, *(TCommDbConnPref*)iDefConnPref)));
}
}
delete cleanupStack;
return (iDefConnPref ? KErrNone : KErrNoMemory);
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::GetDefaultConnection
//
// Function to get the default connection instance from backend.
// The caller should check the handle before using the instance.
// -----------------------------------------------------------------------------
//
RConnection& CLocalSystemInterface::GetDefaultConnection()
{
// If GetDefaultConnection is called without calling
// setdefaultif then the connection is started without any preferences
// Obtain lock on the iDefConnection
iDefConnLock.Wait();
if(iDefConnection.SubSessionHandle() == 0 && iDefConnResurrect)
{
StartDefConnection();
}
// Release lock on the iDefConnection
iDefConnLock.Signal();
return iDefConnection;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::GetSessionPath
//
// Retrieves the cached session path from the backend
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::GetSessionPath(TDes& aPath)
{
if(aPath.MaxLength() < iSessionPath.Length())
return KErrArgument;
iSessionPathLock.Wait();
aPath.Copy(iSessionPath);
iSessionPathLock.Signal();
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::SaveSessionPath
//
// Caches the session path in the backend
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::SaveSessionPath(const TDesC& aPath)
{
if(aPath.Length() > KMaxFileName)
return KErrArgument;
iSessionPathLock.Wait();
iSessionPath.Copy(aPath);
iSessionPathLock.Signal();
return KErrNone;
}
// -----------------------------------------------------------------------------
// handleASelect(TAny* aPtr);
// This function is called to handle aselect, aselect is implemented by
// running select on a different thread, this function is the thread function
// that is used for implementing aselect
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::handleaselect(TAny* aPtr)
{
int errval;
// Call select, when it returns signal the TRequestStatus
// Extract request info
TaselectRequestInfo *requestInfo = (TaselectRequestInfo *)aPtr;
RArray<TASelectRequest>& selectRequest = Backend()->ASelectRequest();
RFastLock& selectLock = Backend()->ASelectLock();
// Call select
TInt nDesReady = Backend()->select(requestInfo->iMaxFd, requestInfo->iReadFds,requestInfo->iWriteFds,requestInfo->iExceptFds, requestInfo->itvptr,errval);
// Open the main thread, this is required to signal it after processing
RThread mainThread;
TInt err = mainThread.Open(requestInfo->iId,EOwnerProcess);
if( err == KErrNone )
{
for ( TInt i=0; i<selectRequest.Count(); i++ )
{
if( selectRequest[i].iRequestStatus == requestInfo->iRequestStatus )
{
// Acquire a lock on the iSelectRequest object
selectLock.Wait();
// Switch to backend heap
RHeap* oldHeap = User::SwitchHeap(Backend()->Heap());
selectRequest.Remove(i);
// Switch back to old heap
User::SwitchHeap(oldHeap);
// Release the lock
selectLock.Signal();
break;
}
}
// Check if select has failed
if( nDesReady == -1 )
{
// There is an error, we need to propogate the errno
// Convert errno to negative value
errval = errval * -1;
mainThread.RequestComplete(requestInfo->iRequestStatus,errval);
}
else
{
// Complete the request on the main thread and the TRequestStatus specified
// in the requestInfo
mainThread.RequestComplete(requestInfo->iRequestStatus,nDesReady);
}
mainThread.Close();
}
// Release the memory used for the TASelectRequestInfo
Backend()->Free(aPtr);
return KErrNone;
}
// -----------------------------------------------------------------------------
// CLocalSystemInterface::CreateASelectThread
// -----------------------------------------------------------------------------
//
TInt CLocalSystemInterface::CreateaselectThread(int maxfd, fd_set* readfds, fd_set* writefds,
fd_set* exceptfds, struct timeval* tvptr,
TRequestStatus* requeststatus, int& anErrno)
{
// Create a aselect request holder, this will be destroyed by the new thread#
// after processing
TaselectRequestInfo *requestInfo = (TaselectRequestInfo* )Backend()->Alloc(sizeof(TaselectRequestInfo));
// request info will be null if dynamic creation fails
if( !requestInfo )
{
anErrno = ENOMEM;
return -1;
}
// Set the aselect request parameters
RThread currentThread;
requestInfo->iId = currentThread.Id();
currentThread.Close();
// Fill the request struct
requestInfo->iMaxFd = maxfd;
requestInfo->iReadFds = readfds;
requestInfo->iWriteFds = writefds;
requestInfo->iExceptFds = exceptfds;
requestInfo->itvptr = tvptr;
requestInfo->iRequestStatus = requeststatus;
*(requestInfo->iRequestStatus) = KRequestPending;
RThread thread;
// We create an anonymous thread
TInt err = thread.Create(KNullDesC, CLocalSystemInterface::handleaselect, 4096, KMinHeapSize,
256*KMinHeapSize, requestInfo);
if ( err != KErrNone )
{
anErrno = ENOMEM;
return -1;
}
// Create a aselect request object
TASelectRequest aselectrequest;
// retrive the service thread handle
aselectrequest.iThreadId = thread.Id();
// Store the TRequestStatus used for the request
aselectrequest.iRequestStatus = requeststatus;
// Obtain the lock
iASelectLock.Wait();
// Switch to backend heap
RHeap* oldHeap = User::SwitchHeap(iPrivateHeap);
// Append to the array
iASelectRequest.Append(aselectrequest);
// Switch back to old heap
User::SwitchHeap(oldHeap);
// Release the lock
iASelectLock.Signal();
// Execute the thread
thread.Resume();
// Close the handle
thread.Close();
return MapError(KErrNone, anErrno);
}