7b2d83c898
I removed the implementation and/or prototypes of all unused functions defined for all components. To reduce recurrent code, I created functions under base for the management of error codes and setting of file permission and amode. Then, I replaced these recurrent code by those function for all components. Signed-off-by: raafatfeki <fekiraafat@gmail.com> add a missing header file Signed-off-by: Edgar Gabriel <egabriel@central.uh.edu>
133 строки
4.3 KiB
C
133 строки
4.3 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2017 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2008-2018 University of Houston. All rights reserved.
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* Copyright (c) 2015-2018 Research Organization for Information Science
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* and Technology (RIST). All rights reserved.
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* Copyright (c) 2016-2017 IBM Corporation. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "fs_ufs.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#include "mpi.h"
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#include "ompi/constants.h"
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#include "ompi/mca/fs/base/base.h"
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#include "ompi/mca/fs/fs.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/info/info.h"
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#include "opal/util/path.h"
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/*
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* file_open_ufs
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*
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* Function: - opens a new file
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* Accepts: - same arguments as MPI_File_open()
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* Returns: - Success if new file handle
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*/
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int
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mca_fs_ufs_file_open (struct ompi_communicator_t *comm,
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const char* filename,
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int access_mode,
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struct opal_info_t *info,
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ompio_file_t *fh)
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{
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int amode, perm;
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int ret=OMPI_SUCCESS;
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perm = mca_fs_base_get_file_perm(fh);
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amode = mca_fs_base_get_file_amode(fh->f_rank, access_mode);
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/* Reset errno */
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errno = 0;
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if (OMPIO_ROOT == fh->f_rank) {
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fh->fd = open (filename, amode, perm);
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if ( 0 > fh->fd ) {
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ret = mca_fs_base_get_mpi_err(errno);
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}
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}
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comm->c_coll->coll_bcast ( &ret, 1, MPI_INT, 0, comm, comm->c_coll->coll_bcast_module);
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if ( OMPI_SUCCESS != ret ) {
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fh->fd = -1;
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return ret;
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}
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if (OMPIO_ROOT != fh->f_rank) {
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fh->fd = open (filename, amode, perm);
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if ( 0 > fh->fd) {
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return mca_fs_base_get_mpi_err(errno);
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}
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}
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fh->f_stripe_size=0;
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fh->f_stripe_count=1;
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/* Need to check for NFS here. If the file system is not NFS but a regular UFS file system,
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we do not need to enforce locking. A regular XFS or EXT4 file system can only be used
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within a single node, local environment, and in this case the OS will already ensure correct
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handling of file system blocks;
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*/
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if ( FS_UFS_LOCK_AUTO == mca_fs_ufs_lock_algorithm ) {
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char *fstype=NULL;
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bool bret = opal_path_nfs ( (char *)filename, &fstype );
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if ( false == bret ) {
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char *dir;
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mca_fs_base_get_parent_dir ( (char *)filename, &dir );
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bret = opal_path_nfs (dir, &fstype);
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free(dir);
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}
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if ( true == bret ) {
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if ( 0 == strncasecmp(fstype, "nfs", sizeof("nfs")) ) {
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/* Based on my tests, only locking the entire file for all operations
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guarantueed for the entire teststuite to pass correctly. I would not
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be surprised, if depending on the NFS configuration that might not always
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be necessary, and the user can change that with an MCA parameter of this
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component. */
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fh->f_flags |= OMPIO_LOCK_ENTIRE_FILE;
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}
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else {
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fh->f_flags |= OMPIO_LOCK_NEVER;
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}
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}
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else {
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fh->f_flags |= OMPIO_LOCK_NEVER;
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}
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free (fstype);
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}
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else if ( FS_UFS_LOCK_NEVER == mca_fs_ufs_lock_algorithm ) {
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fh->f_flags |= OMPIO_LOCK_NEVER;
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}
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else if ( FS_UFS_LOCK_ENTIRE_FILE == mca_fs_ufs_lock_algorithm ) {
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fh->f_flags |= OMPIO_LOCK_ENTIRE_FILE;
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}
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else if ( FS_UFS_LOCK_RANGES == mca_fs_ufs_lock_algorithm ) {
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/* Nothing to be done. This is what the posix fbtl component would do
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anyway without additional information . */
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}
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else {
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opal_output ( 1, "Invalid value for mca_fs_ufs_lock_algorithm %d", mca_fs_ufs_lock_algorithm );
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}
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return OMPI_SUCCESS;
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}
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