blocks/ndbfs/VoidFs.cpp

/*
   Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#include "Ndbfs.hpp"

#include "AsyncFile.hpp"

#include <signaldata/FsOpenReq.hpp>
#include <signaldata/FsCloseReq.hpp>
#include <signaldata/FsReadWriteReq.hpp>
#include <signaldata/FsAppendReq.hpp>
#include <signaldata/FsRemoveReq.hpp>
#include <signaldata/FsConf.hpp>
#include <signaldata/FsRef.hpp>
#include <signaldata/NdbfsContinueB.hpp>
#include <signaldata/DumpStateOrd.hpp>

#include <RefConvert.hpp>
#include <Configuration.hpp>

VoidFs::VoidFs(Block_context & ctx) :
  Ndbfs(ctx)
{
  // Set received signals
  addRecSignal(GSN_SEND_PACKED, &VoidFs::execSEND_PACKED, true);
  addRecSignal(GSN_READ_CONFIG_REQ, &VoidFs::execREAD_CONFIG_REQ, true);
  addRecSignal(GSN_DUMP_STATE_ORD,  &VoidFs::execDUMP_STATE_ORD, true);
  addRecSignal(GSN_STTOR,  &VoidFs::execSTTOR, true);
  addRecSignal(GSN_FSOPENREQ, &VoidFs::execFSOPENREQ, true);
  addRecSignal(GSN_FSCLOSEREQ, &VoidFs::execFSCLOSEREQ, true);
  addRecSignal(GSN_FSWRITEREQ, &VoidFs::execFSWRITEREQ, true);
  addRecSignal(GSN_FSREADREQ, &VoidFs::execFSREADREQ, true);
  addRecSignal(GSN_FSSYNCREQ, &VoidFs::execFSSYNCREQ, true);
  addRecSignal(GSN_FSAPPENDREQ, &VoidFs::execFSAPPENDREQ, true);
  addRecSignal(GSN_FSREMOVEREQ, &VoidFs::execFSREMOVEREQ, true);
  addRecSignal(GSN_FSSUSPENDORD, &VoidFs::execFSSUSPENDORD, true);
   // Set send signals
}

VoidFs::~VoidFs()
{
}

void
VoidFs::execREAD_CONFIG_REQ(Signal* signal)
{
  const ReadConfigReq * req = (ReadConfigReq*)signal->getDataPtr();

  Uint32 ref = req->senderRef;
  Uint32 senderData = req->senderData;

  ReadConfigConf * conf = (ReadConfigConf*)signal->getDataPtrSend();
  conf->senderRef = reference();
  conf->senderData = senderData;
  sendSignal(ref, GSN_READ_CONFIG_CONF, signal,
	     ReadConfigConf::SignalLength, JBB);

  signal->theData[0] = NdbfsContinueB::ZSCAN_MEMORYCHANNEL_10MS_DELAY;
  sendSignalWithDelay(reference(), GSN_CONTINUEB, signal, 10, 1);
}

void
VoidFs::execSTTOR(Signal* signal)
{
  jamEntry();

  if(signal->theData[1] == 0){ // StartPhase 0
    jam();
    signal->theData[3] = 255;
    sendSignal(NDBCNTR_REF, GSN_STTORRY, signal, 4, JBB);
    return;
  }
  ndbrequire(0);
}

void
VoidFs::execSEND_PACKED(Signal* signal)
{
  jamEntry();
  if (scanningInProgress == false && scanIPC(signal))
  {
    jam();
    scanningInProgress = true;
    signal->theData[0] = NdbfsContinueB::ZSCAN_MEMORYCHANNEL_NO_DELAY;
    sendSignal(reference(), GSN_CONTINUEB, signal, 1, JBB);
  }
}

void
VoidFs::execFSOPENREQ(Signal* signal)
{
  jamEntry();
  const FsOpenReq * const fsOpenReq = (FsOpenReq *)&signal->theData[0];
  const BlockReference userRef = fsOpenReq->userReference;
  const Uint32 userPointer = fsOpenReq->userPointer;

  Uint32 flags = fsOpenReq->fileFlags;
  if(flags == FsOpenReq::OM_READONLY){
    // Initialise FsRef signal
    FsRef * const fsRef = (FsRef *)&signal->theData[0];
    fsRef->userPointer = userPointer;
    fsRef->errorCode = FsRef::fsErrFileDoesNotExist;
    fsRef->osErrorCode = ~0;
    sendSignal(userRef, GSN_FSOPENREF, signal, 3, JBB);
    return;
  }

  if(flags & FsOpenReq::OM_WRITEONLY || flags & FsOpenReq::OM_READWRITE){
    signal->theData[0] = userPointer;
    signal->theData[1] = c_maxFileNo++;
    sendSignal(userRef, GSN_FSOPENCONF, signal, 2, JBB);
  }
}

void
VoidFs::execFSREMOVEREQ(Signal* signal)
{
  jamEntry();
  const FsRemoveReq * const req = (FsRemoveReq *)signal->getDataPtr();
  const Uint32 userRef = req->userReference;
  const Uint32 userPointer = req->userPointer;

  signal->theData[0] = userPointer;
  sendSignal(userRef, GSN_FSREMOVECONF, signal, 1, JBB);
}

/*
 * PR0: File Pointer DR0: User reference DR1: User Pointer DR2: Flag bit 0= 1
 * remove file
 */
void
VoidFs::execFSCLOSEREQ(Signal * signal)
{
  jamEntry();

  const FsCloseReq * const req = (FsCloseReq *)signal->getDataPtr();
  const Uint32 userRef = req->userReference;
  const Uint32 userPointer = req->userPointer;

  signal->theData[0] = userPointer;
  sendSignal(userRef, GSN_FSCLOSECONF, signal, 1, JBB);
}

void
VoidFs::execFSWRITEREQ(Signal* signal)
{
  jamEntry();
  const FsReadWriteReq * const req = (FsReadWriteReq *)signal->getDataPtr();
  const Uint32 userRef = req->userReference;
  const Uint32 userPointer = req->userPointer;

  SectionHandle handle(this, signal);
  releaseSections(handle);

  signal->theData[0] = userPointer;
  sendSignal(userRef, GSN_FSWRITECONF, signal, 1, JBB);
}

void
VoidFs::execFSREADREQ(Signal* signal)
{
  jamEntry();

  const FsReadWriteReq * const req = (FsReadWriteReq *)signal->getDataPtr();
  const Uint32 userRef = req->userReference;
  const Uint32 userPointer = req->userPointer;

  SectionHandle handle(this, signal);
  releaseSections(handle);

  signal->theData[0] = userPointer;
  sendSignal(userRef, GSN_FSREADCONF, signal, 1, JBB);
#if 0
  FsRef * const fsRef = (FsRef *)&signal->theData[0];
  fsRef->userPointer = userPointer;
  fsRef->errorCode = FsRef::fsErrEnvironmentError;
  fsRef->osErrorCode = ~0; // Indicate local error
  sendSignal(userRef, GSN_FSREADREF, signal, 3, JBB);
#endif
}

void
VoidFs::execFSSYNCREQ(Signal * signal)
{
  jamEntry();

  BlockReference userRef = signal->theData[1];
  const UintR userPointer = signal->theData[2];

  signal->theData[0] = userPointer;
  sendSignal(userRef, GSN_FSSYNCCONF, signal, 1, JBB);

  return;
}

void
VoidFs::execFSAPPENDREQ(Signal * signal)
{
  const FsAppendReq * const fsReq = (FsAppendReq *)&signal->theData[0];
  const UintR userPointer = fsReq->userPointer;
  const BlockReference userRef = fsReq->userReference;
  const Uint32 size = fsReq->size;

  signal->theData[0] = userPointer;
  signal->theData[1] = size << 2;
  sendSignal(userRef, GSN_FSAPPENDCONF, signal, 2, JBB);
}

/*
 * PR0: File Pointer DR0: User reference DR1: User Pointer
 */
void
VoidFs::execFSSUSPENDORD(Signal * signal)
{
  jamEntry();
}

void
VoidFs::execDUMP_STATE_ORD(Signal* signal)
{
}//VoidFs::execDUMP_STATE_ORD()


BLOCK_FUNCTIONS(VoidFs)