Bug#861736:

[PICCA Frederic-Emmanuel <frederic-emmanuel.picca@synchrotron-soleil.fr>]

activating the NXError reporting we got

filenamenxs.h5 5 <cparam 'P' (0xb7480128)>
ERROR: cannot open file: filenamenxs.h5
0


and looking for this errormessage,

we found it in the napi5.c file



NXstatus  NX5open(CONSTCHAR *filename, NXaccess am, 
				 NXhandle* pHandle)
  {
  hid_t attr1,aid1, aid2, iVID;
  pNexusFile5 pNew = NULL;
  char pBuffer[512];
  char *time_buffer = NULL;
  char version_nr[10];
  unsigned int vers_major, vers_minor, vers_release, am1 ;
  hid_t fapl = -1;     
  int mdc_nelmts;
  size_t rdcc_nelmts;
  size_t rdcc_nbytes;
  double rdcc_w0;
  unsigned hdf5_majnum, hdf5_minnum, hdf5_relnum;

  *pHandle = NULL;

  if (H5get_libversion(&hdf5_majnum, &hdf5_minnum, &hdf5_relnum) < 0)
  {
      NXReportError("ERROR: cannot determine HDF5 library version");
      return NX_ERROR;
  }
  if (hdf5_majnum == 1 && hdf5_minnum < 8)
  {
      NXReportError("ERROR: HDF5 library 1.8.0 or higher required");
      return NX_ERROR;
  }

  /* mask of any options for now */
  am = (NXaccess)(am & NXACCMASK_REMOVEFLAGS);

  /* turn off the automatic HDF error handling */  
      H5Eset_auto(H5E_DEFAULT, NULL, NULL);  
#ifdef USE_FTIME
    struct timeb timeb_struct;
#endif 


    pNew = (pNexusFile5) malloc (sizeof (NexusFile5));
    if (!pNew) {
      NXReportError("ERROR: not enough memory to create file structure");
      return NX_ERROR;
    }
    memset (pNew, 0, sizeof (NexusFile5));


    /* start HDF5 interface */
    if (am == NXACC_CREATE5) {  
       fapl = H5Pcreate(H5P_FILE_ACCESS);
       H5Pget_cache(fapl,&mdc_nelmts,&rdcc_nelmts,&rdcc_nbytes,&rdcc_w0);
       rdcc_nbytes=(size_t)nx_cacheSize;
       H5Pset_cache(fapl,mdc_nelmts,rdcc_nelmts,rdcc_nbytes,rdcc_w0);
       H5Pset_fclose_degree(fapl,H5F_CLOSE_STRONG);
       am1 = H5F_ACC_TRUNC;
       pNew->iFID = H5Fcreate (filename, am1, H5P_DEFAULT, fapl);
    } else {
       if (am == NXACC_READ) {
          am1 = H5F_ACC_RDONLY;
        } else {
          am1 = H5F_ACC_RDWR;
        }    
        fapl = H5Pcreate(H5P_FILE_ACCESS);
	H5Pset_fclose_degree(fapl,H5F_CLOSE_STRONG);
        pNew->iFID = H5Fopen (filename, am1, fapl);
    }  
    if(fapl != -1) {
      H5Pclose(fapl);
    }
    if (pNew->iFID <= 0) {
      sprintf (pBuffer, "ERROR: cannot open file: %s", filename);
      NXReportError( pBuffer);
      free (pNew);
      return NX_ERROR;
    }