/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2017 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * Copyright (c) 2008-2011 University of Houston. All rights reserved.
 * Copyright (c) 2018      Research Organization for Information Science
 *                         and Technology (RIST). All rights reserved.
 * $COPYRIGHT$
 *
 * Additional copyrights may follow
 *
 * $HEADER$
 */

/* This code is based on the PVFS2 ADIO module in ROMIO
 *   Copyright (C) 1997 University of Chicago.
 *   See COPYRIGHT notice in top-level directory.
 */

#include "ompi_config.h"
#include "fs_pvfs2.h"

#include "mpi.h"
#include "ompi/constants.h"
#include "ompi/mca/fs/fs.h"

/*
 *	file_set_size_pvfs2
 *
 *	Function:	- set_size of a file
 *	Accepts:	- same arguments as MPI_File_set_size()
 *	Returns:	- Success if size is set
 */
int
mca_fs_pvfs2_file_set_size (ompio_file_t *fh,
                            OMPI_MPI_OFFSET_TYPE size)
{
    int ret;
    mca_fs_pvfs2 *pvfs2_fs;

    pvfs2_fs = (mca_fs_pvfs2 *)fh->f_fs_ptr;

    if (OMPIO_ROOT == fh->f_rank) {
        ret = PVFS_sys_truncate(pvfs2_fs->object_ref,
                                size, &(pvfs2_fs->credentials));
        fh->f_comm->c_coll->coll_bcast (&ret,
                                       1,
                                       MPI_INT,
                                       OMPIO_ROOT,
                                       fh->f_comm,
                                       fh->f_comm->c_coll->coll_bcast_module);
    }
    else {
        fh->f_comm->c_coll->coll_bcast (&ret,
                                       1,
                                       MPI_INT,
                                       OMPIO_ROOT,
                                       fh->f_comm,
                                       fh->f_comm->c_coll->coll_bcast_module);
    }

    if (ret != 0) {
        return OMPI_ERROR;
    }

    return OMPI_SUCCESS;
}