ROOT » NET » NET » TNetFile

class TNetFile: public TFile


A TNetFile is like a normal TFile except that it reads and writes
its data via a rootd server (for more on the rootd daemon see the
source files root/rootd/src/*.cxx). TNetFile file names are in
standard URL format with protocol "root" or "roots". The following
are valid TNetFile URL's:


The only difference with the well known httpd URL's is that the root
of the remote file tree is the user's home directory. Therefore an
absolute pathname requires a // after the host or port specifier
(see last example). Further the expansion of the standard shell
characters, like ~, $, .., are handled as expected.
TNetFile (actually TUrl) uses 1094 as default port for rootd.

Connecting to a rootd requires the remote user id and password.
TNetFile allows three ways for you to provide your login:
1) Setting it globally via the static functions:
TAuthenticate::SetGlobalUser() and
2) Getting it from the ~/.netrc file (same file as used by ftp)
3) Command line prompt
The different methods will be tried in the order given above.
On machines with AFS rootd will authenticate using AFS (if it was
compiled with AFS support).

If the protocol is specified as "roots" a secure authetication
method will be used. The secure method uses the SRP, Secure Remote
 Passwords, package. SRP uses a so called "asymmetric key exchange    //
 protocol" in which no passwords are ever send over the wire. This    //
protocol is safe against all known security attacks. For more see:

NetFile //
If the protocol is specified as "rootk" kerberos5 will be used for

The rootd daemon lives in the directory $ROOTSYS/bin. It can be
started either via inetd or by hand from the command line (no need
to be super user). For more info about rootd see the web page:

NetFile //

Function Members (Methods)

voidTObject::AbstractMethod(const char* method) const
virtual voidTDirectoryFile::Add(TObject* obj, Bool_t replace = kFALSE)
static voidTDirectory::AddDirectory(Bool_t add = kTRUE)
static Bool_tTDirectory::AddDirectoryStatus()
virtual voidTDirectoryFile::Append(TObject* obj, Bool_t replace = kFALSE)
virtual Int_tTDirectoryFile::AppendKey(TKey* key)
virtual voidTObject::AppendPad(Option_t* option = "")
static TFileOpenHandle*TFile::AsyncOpen(const char* name, Option_t* option = "", const char* ftitle = "", Int_t compress = 1, Int_t netopt = 0)
virtual voidTDirectoryFile::Browse(TBrowser* b)
virtual voidTDirectoryFile::Build(TFile* motherFile = 0, TDirectory* motherDir = 0)
virtual Bool_tTDirectoryFile::cd(const char* path = 0)
static Bool_tTDirectory::Cd(const char* path)
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTDirectory::Clear(Option_t* option = "")
virtual TObject*TNamed::Clone(const char* newname = "") const
virtual TObject*TDirectoryFile::CloneObject(const TObject* obj, Bool_t autoadd = kTRUE)
virtual voidClose(Option_t* option = "")MENU
virtual Int_tTNamed::Compare(const TObject* obj) const
virtual voidTFile::Copy(TObject&) const
virtual Bool_tTFile::Cp(const char* dst, Bool_t progressbar = kTRUE, UInt_t buffersize = 1000000)
static Bool_tTFile::Cp(const char* src, const char* dst, Bool_t progressbar = kTRUE, UInt_t buffersize = 1000000)
virtual TKey*TFile::CreateKey(TDirectory* mother, const TObject* obj, const char* name, Int_t bufsize)
virtual TKey*TFile::CreateKey(TDirectory* mother, const void* obj, const TClass* cl, const char* name, Int_t bufsize)
static TDirectory*&TDirectory::CurrentDirectory()
static TFile*&TFile::CurrentFile()
static voidTDirectory::DecodeNameCycle(const char* namecycle, char* name, Short_t& cycle, const size_t namesize = 0)
virtual voidTFile::Delete(const char* namecycle = "")
virtual voidTDirectory::DeleteAll(Option_t* option = "")
virtual Int_tTObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual voidTFile::Draw(Option_t* option = "")
virtual voidTObject::DrawClass() constMENU
virtual TObject*TObject::DrawClone(Option_t* option = "") constMENU
virtual voidTFile::DrawMap(const char* keys = "*", Option_t* option = "")MENU
virtual voidTObject::Dump() constMENU
static voidTDirectory::EncodeNameCycle(char* buffer, const char* name, Short_t cycle)
virtual voidTObject::Error(const char* method, const char* msgfmt) const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidTObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
virtual voidTFile::FillBuffer(char*& buffer)
virtual TKey*TDirectoryFile::FindKey(const char* keyname) const
virtual TKey*TDirectoryFile::FindKeyAny(const char* keyname) const
virtual TObject*TDirectory::FindObject(const char* name) const
virtual TObject*TDirectory::FindObject(const TObject* obj) const
virtual TObject*TDirectoryFile::FindObjectAny(const char* name) const
virtual TObject*TDirectoryFile::FindObjectAnyFile(const char* name) const
virtual voidFlush()
virtual TObject*TDirectoryFile::Get(const char* namecycle)
TArchiveFile*TFile::GetArchive() const
Long64_tTFile::GetArchiveOffset() const
static TFile::EAsyncOpenStatusTFile::GetAsyncOpenStatus(const char* name)
static TFile::EAsyncOpenStatusTFile::GetAsyncOpenStatus(TFileOpenHandle* handle)
Int_tTFile::GetBestBuffer() const
virtual Int_tTDirectoryFile::GetBufferSize() const
virtual Long64_tTFile::GetBytesRead() const
virtual Long64_tTFile::GetBytesReadExtra() const
virtual Int_tTFile::GetBytesToPrefetch() const
virtual Long64_tTFile::GetBytesWritten() const
static const char*TFile::GetCacheFileDir()
TFileCacheRead*TFile::GetCacheRead(TObject* tree = 0) const
TFileCacheWrite*TFile::GetCacheWrite() const
TArrayC*TFile::GetClassIndex() const
Int_tTFile::GetCompressionAlgorithm() const
Int_tTFile::GetCompressionLevel() const
Int_tTFile::GetCompressionSettings() const
const TDatime&TDirectoryFile::GetCreationDate() const
virtual TDirectory*TDirectoryFile::GetDirectory(const char* apath, Bool_t printError = false, const char* funcname = "GetDirectory")
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
virtual Long64_tTFile::GetEND() const
virtual const TUrl*GetEndpointUrl() const
virtual Int_tTFile::GetErrno() const
Int_tGetErrorCode() const
Int_tTFile::GetFd() const
virtual TFile*TDirectoryFile::GetFile() const
static Long64_tTFile::GetFileBytesRead()
static Long64_tTFile::GetFileBytesWritten()
static Long64_tTFile::GetFileCounter()
static Int_tTFile::GetFileReadCalls()
virtual const char*TObject::GetIconName() const
virtual TKey*TDirectoryFile::GetKey(const char* name, Short_t cycle = 9999) const
virtual TList*TDirectory::GetList() const
TList*TFile::GetListOfFree() const
virtual TList*TDirectoryFile::GetListOfKeys() const
TObjArray*TFile::GetListOfProcessIDs() const
const TDatime&TDirectoryFile::GetModificationDate() const
virtual TObject*TDirectory::GetMother() const
virtual TDirectory*TDirectory::GetMotherDir() const
virtual const char*TNamed::GetName() const
virtual Int_tTFile::GetNbytesFree() const
virtual Int_tTFile::GetNbytesInfo() const
virtual Int_tTDirectoryFile::GetNbytesKeys() const
virtual TStringTFile::GetNewUrl()
virtual Int_tTFile::GetNfree() const
virtual Int_tTDirectoryFile::GetNkeys() const
virtual Int_tTFile::GetNProcessIDs() const
virtual void*TDirectoryFile::GetObjectChecked(const char* namecycle, const char* classname)
virtual void*TDirectoryFile::GetObjectChecked(const char* namecycle, const TClass* cl)
virtual char*TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual void*TDirectoryFile::GetObjectUnchecked(const char* namecycle)
static Bool_tTFile::GetOnlyStaged()
static UInt_tTFile::GetOpenTimeout()
virtual Option_t*TFile::GetOption() const
virtual const char*TDirectory::GetPath() const
virtual const char*TDirectory::GetPathStatic() const
static Int_tTFile::GetReadaheadSize()
virtual Int_tTFile::GetReadCalls() const
static Bool_tTFile::GetReadStreamerInfo()
Int_tTFile::GetRecordHeader(char* buf, Long64_t first, Int_t maxbytes, Int_t& nbytes, Int_t& objlen, Int_t& keylen)
Long64_tTFile::GetRelOffset() const
virtual Long64_tTDirectoryFile::GetSeekDir() const
virtual Long64_tTFile::GetSeekFree() const
virtual Long64_tTFile::GetSeekInfo() const
virtual Long64_tTDirectoryFile::GetSeekKeys() const
virtual Long64_tTDirectoryFile::GetSeekParent() const
virtual Long64_tTFile::GetSize() const
const TList*TFile::GetStreamerInfoCache()
virtual TList*TFile::GetStreamerInfoList()
virtual const char*TNamed::GetTitle() const
static TFile::EFileTypeTFile::GetType(const char* name, Option_t* option = "", TString* prefix = 0)
virtual UInt_tTObject::GetUniqueID() const
TUUIDTDirectory::GetUUID() const
Int_tTFile::GetVersion() const
virtual Bool_tTObject::HandleTimer(TTimer* timer)
virtual ULong_tTNamed::Hash() const
static voidTFile::IncrementFileCounter()
virtual voidTFile::IncrementProcessIDs()
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tTObject::InheritsFrom(const char* classname) const
virtual Bool_tTObject::InheritsFrom(const TClass* cl) const
virtual voidTObject::Inspect() constMENU
voidTObject::InvertBit(UInt_t f)
virtual TClass*IsA() const
virtual Bool_tTFile::IsArchive() const
Bool_tTFile::IsBinary() const
virtual Bool_tTObject::IsEqual(const TObject* obj) const
virtual Bool_tTDirectory::IsFolder() const
virtual Bool_tTDirectoryFile::IsModified() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tIsOpen() const
Bool_tTFile::IsRaw() const
virtual Bool_tTNamed::IsSortable() const
virtual Bool_tTDirectoryFile::IsWritable() const
Bool_tTObject::IsZombie() const
virtual voidTFile::ls(Option_t* option = "") const
virtual voidTFile::MakeFree(Long64_t first, Long64_t last)
virtual voidTFile::MakeProject(const char* dirname, const char* classes = "*", Option_t* option = "new")MENU
virtual voidTFile::Map()MENU
virtual Bool_tMatches(const char* url)
voidTObject::MayNotUse(const char* method) const
virtual TDirectory*TDirectoryFile::mkdir(const char* name, const char* title = "")
virtual Bool_tTFile::MustFlush() const
virtual Bool_tTObject::Notify()
voidTObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
static TFile*TFile::Open(TFileOpenHandle* handle)
static TFile*TFile::Open(const char* name, Option_t* option = "", const char* ftitle = "", Int_t compress = 1, Int_t netopt = 0)
virtual TFile*TDirectoryFile::OpenFile(const char* name, Option_t* option = "", const char* ftitle = "", Int_t compress = 1, Int_t netopt = 0)
voidTObject::operator delete(void* ptr)
voidTObject::operator delete(void* ptr, void* vp)
voidTObject::operator delete[](void* ptr)
voidTObject::operator delete[](void* ptr, void* vp)
void*TObject::operator new(size_t sz)
void*TObject::operator new(size_t sz, void* vp)
void*TObject::operator new[](size_t sz)
void*TObject::operator new[](size_t sz, void* vp)
virtual voidTFile::Paint(Option_t* option = "")
virtual voidTObject::Pop()
virtual voidTDirectoryFile::Purge(Short_t nkeep = 1)
virtual voidTDirectory::pwd() const
virtual Int_tTObject::Read(const char* name)
virtual voidTDirectoryFile::ReadAll(Option_t* option = "")
virtual Bool_tReadBuffer(char* buf, Int_t len)
virtual Bool_tReadBuffer(char* buf, Long64_t pos, Int_t len)
virtual Bool_tTFile::ReadBufferAsync(Long64_t offs, Int_t len)
virtual Bool_tReadBuffers(char* buf, Long64_t* pos, Int_t* len, Int_t nbuf)
virtual voidTFile::ReadFree()
virtual Int_tTDirectoryFile::ReadKeys(Bool_t forceRead = kTRUE)
virtual TProcessID*TFile::ReadProcessID(UShort_t pidf)
virtual voidTFile::ReadStreamerInfo()
virtual Int_tTDirectoryFile::ReadTObject(TObject* obj, const char* keyname)
virtual Int_tTFile::Recover()
virtual voidTDirectory::RecursiveRemove(TObject* obj)
virtual TObject*TDirectory::Remove(TObject*)
virtual Int_tReOpen(Option_t* mode)
virtual voidTDirectoryFile::ResetAfterMerge(TFileMergeInfo*)
voidTObject::ResetBit(UInt_t f)
virtual voidTFile::ResetErrno() const
virtual voidTDirectoryFile::rmdir(const char* name)
virtual voidTDirectoryFile::Save()
virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual Int_tTDirectoryFile::SaveObjectAs(const TObject* obj, const char* filename = "", Option_t* option = "") const
virtual voidTObject::SavePrimitive(ostream& out, Option_t* option = "")
virtual voidTDirectoryFile::SaveSelf(Bool_t force = kFALSE)
virtual voidSeek(Long64_t offset, TFile::ERelativeTo pos = kBeg)
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
virtual voidTDirectoryFile::SetBufferSize(Int_t bufsize)
static Bool_tTFile::SetCacheFileDir(const char* cacheDir, Bool_t operateDisconnected = kTRUE, Bool_t forceCacheread = kFALSE)
virtual voidTFile::SetCacheRead(TFileCacheRead* cache, TObject* tree = 0, TFile::ECacheAction action = kDisconnect)
virtual voidTFile::SetCacheWrite(TFileCacheWrite* cache)
virtual voidTFile::SetCompressionAlgorithm(Int_t algorithm = 0)
virtual voidTFile::SetCompressionLevel(Int_t level = 1)
virtual voidTFile::SetCompressionSettings(Int_t settings = 1)
virtual voidTObject::SetDrawOption(Option_t* option = "")MENU
static voidTObject::SetDtorOnly(void* obj)
virtual voidTFile::SetEND(Long64_t last)
static voidTFile::SetFileBytesRead(Long64_t bytes = 0)
static voidTFile::SetFileBytesWritten(Long64_t bytes = 0)
static voidTFile::SetFileReadCalls(Int_t readcalls = 0)
virtual voidTDirectoryFile::SetModified()
virtual voidTDirectory::SetMother(TObject* mother)
virtual voidTDirectory::SetName(const char* newname)
virtual voidTNamed::SetNameTitle(const char* name, const char* title)
static voidTObject::SetObjectStat(Bool_t stat)
virtual voidTFile::SetOffset(Long64_t offset, TFile::ERelativeTo pos = kBeg)
static Bool_tTFile::SetOnlyStaged(Bool_t onlystaged)
static UInt_tTFile::SetOpenTimeout(UInt_t timeout)
virtual voidTFile::SetOption(Option_t* option = ">")
static voidTFile::SetReadaheadSize(Int_t bufsize = 256000)
virtual voidTFile::SetReadCalls(Int_t readcalls = 0)
static voidTFile::SetReadStreamerInfo(Bool_t readinfo = kTRUE)
virtual voidTDirectoryFile::SetSeekDir(Long64_t v)
virtual voidTNamed::SetTitle(const char* title = "")MENU
virtual voidTDirectoryFile::SetTRefAction(TObject* ref, TObject* parent)
virtual voidTObject::SetUniqueID(UInt_t uid)
virtual voidTDirectoryFile::SetWritable(Bool_t writable = kTRUE)
virtual voidShowMembers(TMemberInspector& insp) const
virtual voidTFile::ShowStreamerInfo()
static Bool_tTFile::ShrinkCacheFileDir(Long64_t shrinkSize, Long_t cleanupInteval = 0)
virtual Int_tTFile::Sizeof() const
virtual voidStreamer(TBuffer&)
voidStreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
voidTFile::SumBuffer(Int_t bufsize)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
TNetFile(const char* url, Option_t* option = "", const char* ftitle = "", Int_t compress = 1, Int_t netopt = 0)
virtual voidTObject::UseCurrentStyle()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTFile::Write(const char* name = 0, Int_t opt = 0, Int_t bufsiz = 0)
virtual Int_tTFile::Write(const char* name = 0, Int_t opt = 0, Int_t bufsiz = 0) const
virtual Bool_tWriteBuffer(const char* buf, Int_t len)
virtual voidTDirectoryFile::WriteDirHeader()
virtual voidTFile::WriteFree()
virtual voidTFile::WriteHeader()
virtual voidTDirectoryFile::WriteKeys()
virtual Int_tTDirectoryFile::WriteObjectAny(const void* obj, const char* classname, const char* name, Option_t* option = "", Int_t bufsize = 0)
virtual Int_tTDirectoryFile::WriteObjectAny(const void* obj, const TClass* cl, const char* name, Option_t* option = "", Int_t bufsize = 0)
virtual UShort_tTFile::WriteProcessID(TProcessID* pid)
virtual voidTFile::WriteStreamerInfo()
virtual Int_tTDirectoryFile::WriteTObject(const TObject* obj, const char* name = 0, Option_t* option = "", Int_t bufsize = 0)
Bool_tTDirectory::cd1(const char* path)
static Bool_tTDirectory::Cd1(const char* path)
virtual voidTDirectoryFile::CleanTargets()
virtual voidConnectServer(Int_t* stat, EMessageTypes* kind, Int_t netopt, Int_t tcpwindowsize, Bool_t forceOpen, Bool_t forceRead)
virtual voidCreate(const char* url, Option_t* option, Int_t netopt)
virtual voidCreate(TSocket* s, Option_t* option, Int_t netopt)
virtual Long64_tTFile::DirCreateEntry(TDirectory*)
virtual Int_tTFile::DirReadKeys(TDirectory*)
virtual voidTFile::DirWriteHeader(TDirectory*)
virtual voidTFile::DirWriteKeys(TDirectory*)
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
voidTDirectory::FillFullPath(TString& buf) const
virtual TFile::EAsyncOpenStatusTFile::GetAsyncOpenStatus()
virtual voidInit(Bool_t create)
Int_tTFile::MakeProjectParMake(const char* packname, const char* filename)
Int_tTFile::MakeProjectParProofInf(const char* packname, const char* proofinfdir)
TNetFile&operator=(const TNetFile&)
virtual voidPrint(Option_t* option) const
voidPrintError(const char* where, Int_t err)
Int_tTFile::ReadBufferViaCache(char* buf, Int_t len)
Int_tRecv(Int_t& status, EMessageTypes& kind)
voidTDirectory::RegisterContext(TDirectory::TContext* ctxt)
virtual Int_tSysClose(Int_t fd)
virtual Int_tSysOpen(const char* pathname, Int_t flags, UInt_t mode)
virtual Int_tTFile::SysRead(Int_t fd, void* buf, Int_t len)
virtual Long64_tTFile::SysSeek(Int_t fd, Long64_t offset, Int_t whence)
virtual Int_tSysStat(Int_t fd, Long_t* id, Long64_t* size, Long_t* flags, Long_t* modtime)
virtual Int_tTFile::SysSync(Int_t fd)
virtual Int_tTFile::SysWrite(Int_t fd, const void* buf, Int_t len)
TNetFile(const TNetFile&)
TNetFile(const char* url, const char* ftitle, Int_t comp, Bool_t)
voidTDirectory::UnregisterContext(TDirectory::TContext* ctxt)
Int_tTFile::WriteBufferViaCache(const char* buf, Int_t len)

Data Members

static TFile::EAsyncOpenStatusTFile::kAOSFailure
static TFile::EAsyncOpenStatusTFile::kAOSInProgress
static TFile::EAsyncOpenStatusTFile::kAOSNotAsync
static TFile::EAsyncOpenStatusTFile::kAOSSuccess
static TFile::ERelativeToTFile::kBeg
static TFile::EStatusBitsTFile::kBinaryFile
static TObject::(anonymous)TObject::kBitMask
static TObject::EStatusBitsTObject::kCanDelete
static TObject::EStatusBitsTObject::kCannotPick
static TDirectoryFile::(anonymous)TDirectoryFile::kCloseDirectory
static TFile::ERelativeToTFile::kCur
static TFile::EFileTypeTFile::kDefault
static TFile::EStatusBitsTFile::kDevNull
static TFile::ECacheActionTFile::kDisconnect
static TFile::ECacheActionTFile::kDoNotDisconnect
static TFile::ERelativeToTFile::kEnd
static TFile::EOpenTimeOutTFile::kEternalTimeout
static TFile::EFileTypeTFile::kFile
static TFile::EStatusBitsTFile::kHasReferences
static TObject::EStatusBitsTObject::kHasUUID
static TFile::EOpenTimeOutTFile::kInstantTimeout
static TObject::EStatusBitsTObject::kInvalidObject
static TObject::(anonymous)TObject::kIsOnHeap
static TObject::EStatusBitsTObject::kIsReferenced
static TFile::EFileTypeTFile::kLocal
static TFile::EFileTypeTFile::kMerge
static TObject::EStatusBitsTObject::kMustCleanup
static TFile::EFileTypeTFile::kNet
static TObject::EStatusBitsTObject::kNoContextMenu
static TObject::(anonymous)TObject::kNotDeleted
static TObject::EStatusBitsTObject::kObjInCanvas
static TObject::(anonymous)TObject::kOverwrite
static TFile::EStatusBitsTFile::kRecovered
static TFile::EStatusBitsTFile::kRedirected
static TObject::(anonymous)TObject::kSingleKey
static TFile::(anonymous)TFile::kStartBigFile
static TFile::EFileTypeTFile::kWeb
static TObject::(anonymous)TObject::kWriteDelete
static TFile::EStatusBitsTFile::kWriteError
static TObject::(anonymous)TObject::kZombie
TArchiveFile*TFile::fArchive!Archive file from which we read this file
Long64_tTFile::fArchiveOffset!Offset at which file starts in archive
TFileOpenHandle*TFile::fAsyncHandle!For proper automatic cleanup
TFile::EAsyncOpenStatusTFile::fAsyncOpenStatus!Status of an asynchronous open request
Long64_tTFile::fBEGINFirst used byte in file
Int_tTDirectoryFile::fBufferSizeDefault buffer size to create new TKeys
Long64_tTFile::fBytesReadNumber of bytes read from this file
Long64_tTFile::fBytesReadExtraNumber of extra bytes (overhead) read by the readahead buffer
Long64_tTFile::fBytesWriteNumber of bytes written to this file
TFileCacheRead*TFile::fCacheRead!Pointer to the read cache (if any)
TMap*TFile::fCacheReadMap!Pointer to the read cache (if any)
TFileCacheWrite*TFile::fCacheWrite!Pointer to the write cache (if any)
TArrayC*TFile::fClassIndex!Index of TStreamerInfo classes written to this file
Int_tTFile::fCompressCompression level and algorithm
TDirectory::TContext*TDirectory::fContext!Pointer to a list of TContext object pointing to this TDirectory
Int_tTFile::fDFile descriptor
TDatimeTDirectoryFile::fDatimeCDate and time when directory is created
TDatimeTDirectoryFile::fDatimeMDate and time of last modification
Long64_tTFile::fENDLast used byte in file
TUrlfEndpointUrlURL of realfile (after possible redirection)
Int_tfErrorCodeerror code returned by rootd (matching gRootdErrStr)
TFile*TDirectoryFile::fFilepointer to current file in memory
TList*TFile::fFreeFree segments linked list table
TList*TFile::fInfoCache!Cached list of the streamer infos in this file
Bool_tTFile::fInitDone!True if the file has been initialized
Bool_tTFile::fIsArchive!True if this is a pure archive file
Bool_tTFile::fIsPcmFile!True if the file is a ROOT pcm file.
Bool_tTFile::fIsRootFile!True is this is a ROOT file, raw file otherwise
TList*TDirectoryFile::fKeysPointer to keys list in memory
TList*TDirectory::fListList of objects in memory
Bool_tTDirectoryFile::fModifiedtrue if directory has been modified
TObject*TDirectory::fMotherpointer to mother of the directory
Bool_tTFile::fMustFlush!True if the file buffers must be flushed
Int_tTFile::fNProcessIDsNumber of TProcessID written to this file
TStringTNamed::fNameobject identifier
Int_tTFile::fNbytesFreeNumber of bytes for free segments structure
Int_tTFile::fNbytesInfoNumber of bytes for StreamerInfo record
Int_tTDirectoryFile::fNbytesKeysNumber of bytes for the keys
Int_tTDirectoryFile::fNbytesNameNumber of bytes in TNamed at creation time
Int_tfNetoptinitial network options (used for ReOpen())
Bool_tTFile::fNoAnchorInName!True if we don't want to force the anchor to be appended to the file name
Long64_tTFile::fOffset!Seek offset cache
TList*TFile::fOpenPhases!Time info about open phases
TStringTFile::fOptionFile options
TStringTDirectory::fPathBuffer!Buffer for GetPath() function
TObjArray*TFile::fProcessIDs!Array of pointers to TProcessIDs
Int_tfProtocolrootd protocol level
Int_tTFile::fReadCallsNumber of read calls ( not counting the cache calls )
TStringTFile::fRealNameEffective real file name (not original url)
Long64_tTDirectoryFile::fSeekDirLocation of directory on file
Long64_tTFile::fSeekFreeLocation on disk of free segments structure
Long64_tTFile::fSeekInfoLocation on disk of StreamerInfo record
Long64_tTDirectoryFile::fSeekKeysLocation of Keys record on file
Long64_tTDirectoryFile::fSeekParentLocation of parent directory on file
TSocket*fSocketconnection to rootd server
Double_tTFile::fSum2BufferSum of squares of buffer sizes of objects written so far
Double_tTFile::fSumBufferSum of buffer sizes of objects written so far
TStringTNamed::fTitleobject title
TUUIDTDirectory::fUUIDUnique identifier
Char_tTFile::fUnitsNumber of bytes for file pointers
TUrlTFile::fUrl!URL of file
TStringfUserremote user name
Int_tTFile::fVersionFile format version
Bool_tTDirectoryFile::fWritabletrue if directory is writable
Int_tTFile::fWrittenNumber of objects written so far
static Bool_tTDirectory::fgAddDirectory!flag to add histograms, graphs,etc to the directory
static TList*TFile::fgAsyncOpenRequestsList of handles for pending open requests
static atomic<Long64_t>TFile::fgBytesReadNumber of bytes read by all TFile objects
static atomic<Long64_t>TFile::fgBytesWriteNumber of bytes written by all TFile objects
static TStringTFile::fgCacheFileDirDirectory where to locally stage files
static Bool_tTFile::fgCacheFileDisconnectedIndicates, we trust in the files in the cache dir without stat on the cached file
static Bool_tTFile::fgCacheFileForceIndicates, to force all READ to CACHEREAD
static atomic<Long64_t>TFile::fgFileCounterCounter for all opened files
static Bool_tTFile::fgOnlyStagedBefore the file is opened, it is checked, that the file is staged, if not, the open fails
static UInt_tTFile::fgOpenTimeoutTimeout for open operations in ms - 0 corresponds to blocking i/o
static atomic<Int_t>TFile::fgReadCallsNumber of bytes read from all TFile objects
static Bool_tTFile::fgReadInfoif true (default) ReadStreamerInfo is called when opening a file
static Int_tTFile::fgReadaheadSizeReadahead buffer size

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

TNetFile(const char* url, Option_t* option = "", const char* ftitle = "", Int_t compress = 1, Int_t netopt = 0)
 Create a TNetFile object. This is actually done inside Create(), so
 for a description of the options and other arguments see Create().
 Normally a TNetFile is created via TFile::Open().
TNetFile(const char* url, const char* ftitle, Int_t comp, Bool_t )
 Create a TNetFile object. To be used by derived classes, that need
 to initialize the TFile base class but not open a connection at this
 TNetFile dtor. Send close message and close socket.
Int_t SysOpen(const char* pathname, Int_t flags, UInt_t mode)
 Open a remote file. Requires fOption to be set correctly.
Int_t SysClose(Int_t fd)
 Close currently open file.
Int_t SysStat(Int_t fd, Long_t* id, Long64_t* size, Long_t* flags, Long_t* modtime)
 Return file stat information. The interface and return value is
 identical to TSystem::GetPathInfo().
void Close(Option_t* option = "")
 Close remote file.
void Flush()
 Flush file to disk.
void Init(Bool_t create)
 Initialize a TNetFile object.
Bool_t IsOpen() const
 Retruns kTRUE if file is open, kFALSE otherwise.
void Print(Option_t* option) const
 Print some info about the net file.
void PrintError(const char* where, Int_t err)
 Print error string depending on error code.
Int_t ReOpen(Option_t* mode)
 Reopen a file with a different access mode, like from READ to
 mode argument can be either "READ" or "UPDATE". The method returns
 0 in case the mode was successfully modified, 1 in case the mode
 did not change (was already as requested or wrong input arguments)
 and -1 in case of failure, in which case the file cannot be used
Bool_t ReadBuffer(char* buf, Int_t len)
 Read specified byte range from remote file via rootd daemon.
 Returns kTRUE in case of error.
Bool_t ReadBuffer(char* buf, Long64_t pos, Int_t len)
 Read specified byte range from remote file via rootd daemon.
 Returns kTRUE in case of error.
Bool_t ReadBuffers(char* buf, Long64_t* pos, Int_t* len, Int_t nbuf)
 Read a list of buffers given in pos[] and len[] and return it in a single
 Returns kTRUE in case of error.
Bool_t WriteBuffer(const char* buf, Int_t len)
 Write specified byte range to remote file via rootd daemon.
 Returns kTRUE in case of error.
Int_t Recv(Int_t& status, EMessageTypes& kind)
 Return status from rootd server and message kind. Returns -1 in
 case of error otherwise 8 (sizeof 2 words, status and kind).
void Seek(Long64_t offset, TFile::ERelativeTo pos = kBeg)
 Set position from where to start reading.
void ConnectServer(Int_t* stat, EMessageTypes* kind, Int_t netopt, Int_t tcpwindowsize, Bool_t forceOpen, Bool_t forceRead)
 Connect to remote rootd server.
void Create(const char* url, Option_t* option, Int_t netopt)
 Create a NetFile object. A net file is the same as a TFile
 except that it is being accessed via a rootd server. The url
 argument must be of the form: root[s|k]://host.dom.ain/file.root.
 When protocol is "roots" try using SRP authentication.
 When protocol is "rootk" try using kerberos5 authentication.
 If the file specified in the URL does not exist, is not accessable
 or can not be created the kZombie bit will be set in the TNetFile
 object. Use IsZombie() to see if the file is accessable.
 If the remote daemon thinks the file is still connected, while you are
 sure this is not the case you can force open the file by preceding the
 option argument with an "-", e.g.: "-recreate". Do this only
 in cases when you are very sure nobody else is using the file.
 To bypass the writelock on a file, to allow the reading of a file
 that is being written by another process, explicitly specify the
 "+read" option ("read" being the default option).
 The netopt argument can be used to specify the size of the tcp window in
 bytes (for more info see:
 The default and minimum tcp window size is 65535 bytes.
 If netopt < -1 then |netopt| is the number of parallel sockets that will
 be used to connect to rootd. This option should be used on fat pipes
 (i.e. high bandwidth, high latency links). The ideal number of parallel
 sockets depends on the bandwidth*delay product. Generally 5-7 is a good
 For a description of the option and other arguments see the TFile ctor.
 The preferred interface to this constructor is via TFile::Open().
void Create(TSocket* s, Option_t* option, Int_t netopt)
 Create a NetFile object using an existing connection (socket s).
 Provided for use in TXNetFile.
    TNetFile::Create(const char *url, Option_t *option, Int_t netopt)
 for details about the arguments.
Bool_t Matches(const char* url)
 Return kTRUE if 'url' matches the coordinates of this file.
 Check the full URL, including port and FQDN.
TNetFile(const TNetFile& )
TNetFile& operator=(const TNetFile& )
TNetFile(const char* url, const char* ftitle, Int_t comp, Bool_t )
Int_t GetErrorCode() const
{ return fErrorCode; }
const TUrl * GetEndpointUrl() const
{ return &fEndpointUrl; }