root/ompi/mca/fs/pvfs2/fs_pvfs2.c

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DEFINITIONS

This source file includes following definitions.
  1. mca_fs_pvfs2_component_init_query
  2. mca_fs_pvfs2_component_file_query
  3. mca_fs_pvfs2_component_file_unquery
  4. mca_fs_pvfs2_module_init
  5. mca_fs_pvfs2_module_finalize

   1 /*
   2  * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
   3  *                         University Research and Technology
   4  *                         Corporation.  All rights reserved.
   5  * Copyright (c) 2004-2017 The University of Tennessee and The University
   6  *                         of Tennessee Research Foundation.  All rights
   7  *                         reserved.
   8  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
   9  *                         University of Stuttgart.  All rights reserved.
  10  * Copyright (c) 2004-2005 The Regents of the University of California.
  11  *                         All rights reserved.
  12  * Copyright (c) 2008-2016 University of Houston. All rights reserved.
  13  * Copyright (c) 2018      Research Organization for Information Science
  14  *                         and Technology (RIST). All rights reserved.
  15  * Copyright (c) 2018      DataDirect Networks. All rights reserved.
  16  * $COPYRIGHT$
  17  *
  18  * Additional copyrights may follow
  19  *
  20  * $HEADER$
  21  *
  22  * These symbols are in a file by themselves to provide nice linker
  23  * semantics. Since linkers generally pull in symbols by object fules,
  24  * keeping these symbols as the only symbols in this file prevents
  25  * utility programs such as "ompi_info" from having to import entire
  26  * modules just to query their version and parameters
  27  */
  28 
  29 
  30 #include "ompi_config.h"
  31 #include "mpi.h"
  32 #include "ompi/mca/fs/fs.h"
  33 #include "ompi/mca/fs/base/base.h"
  34 #include "ompi/mca/fs/pvfs2/fs_pvfs2.h"
  35 
  36 #ifdef HAVE_SYS_STATFS_H
  37 #include <sys/statfs.h> /* or <sys/vfs.h> */
  38 #endif
  39 #ifdef HAVE_SYS_PARAM_H
  40 #include <sys/param.h>
  41 #endif
  42 #ifdef HAVE_SYS_MOUNT_H
  43 #include <sys/mount.h>
  44 #endif
  45 #ifdef HAVE_SYS_STAT_H
  46 #include <sys/stat.h>
  47 #endif
  48 
  49 /*
  50  * *******************************************************************
  51  * ************************ actions structure ************************
  52  * *******************************************************************
  53  */
  54 static mca_fs_base_module_1_0_0_t pvfs2 =  {
  55     mca_fs_pvfs2_module_init, /* initalise after being selected */
  56     mca_fs_pvfs2_module_finalize, /* close a module on a communicator */
  57     mca_fs_pvfs2_file_open,
  58     mca_fs_pvfs2_file_close,
  59     mca_fs_pvfs2_file_delete,
  60     mca_fs_pvfs2_file_set_size,
  61     mca_fs_pvfs2_file_get_size,
  62     mca_fs_pvfs2_file_sync
  63 };
  64 /*
  65  * *******************************************************************
  66  * ************************* structure ends **************************
  67  * *******************************************************************
  68  */
  69 
  70 int mca_fs_pvfs2_component_init_query(bool enable_progress_threads,
  71                                       bool enable_mpi_threads)
  72 {
  73     /* Nothing to do */
  74 
  75    return OMPI_SUCCESS;
  76 }
  77 
  78 struct mca_fs_base_module_1_0_0_t *
  79 mca_fs_pvfs2_component_file_query (ompio_file_t *fh, int *priority)
  80 {
  81 
  82     /* The code in this function is based on the ADIO FS selection in ROMIO
  83      *   Copyright (C) 1997 University of Chicago.
  84      *   See COPYRIGHT notice in top-level directory.
  85      */
  86 
  87     char *tmp;
  88 
  89     /* The code in this function is based on the ADIO FS selection in ROMIO
  90      *   Copyright (C) 1997 University of Chicago.
  91      *   See COPYRIGHT notice in top-level directory.
  92      */
  93 
  94    *priority = mca_fs_pvfs2_priority;
  95 
  96     tmp = strchr (fh->f_filename, ':');
  97     if (!tmp) {
  98         /* The communicator might be NULL if we only want to delete the file */
  99         if (OMPIO_ROOT == fh->f_rank || MPI_COMM_NULL == fh->f_comm) {
 100             fh->f_fstype = mca_fs_base_get_fstype ( fh->f_filename );
 101             }
 102         if (fh->f_comm != MPI_COMM_NULL) {
 103             fh->f_comm->c_coll->coll_bcast (&(fh->f_fstype),
 104                         1,
 105                         MPI_INT,
 106                         OMPIO_ROOT,
 107                         fh->f_comm,
 108                         fh->f_comm->c_coll->coll_bcast_module);
 109         }
 110     }
 111     else {
 112         if (!strncmp(fh->f_filename, "pvfs2:", 6) ||
 113             !strncmp(fh->f_filename, "PVFS2:", 6)) {
 114             fh->f_fstype = PVFS2;
 115         }
 116     }
 117 
 118    if (PVFS2 == fh->f_fstype) {
 119        if (*priority < 50) {
 120            *priority = 50;
 121            return &pvfs2;
 122        }
 123    }
 124 
 125    return NULL;
 126 }
 127 
 128 int mca_fs_pvfs2_component_file_unquery (ompio_file_t *file)
 129 {
 130    /* This function might be needed for some purposes later. for now it
 131     * does not have anything to do since there are no steps which need
 132     * to be undone if this module is not selected */
 133 
 134    return OMPI_SUCCESS;
 135 }
 136 
 137 int mca_fs_pvfs2_module_init (ompio_file_t *file)
 138 {
 139     /* Make sure the file type is not overwritten by the last queried
 140          * component */
 141     file->f_fstype = PVFS2;
 142     return OMPI_SUCCESS;
 143 }
 144 
 145 
 146 int mca_fs_pvfs2_module_finalize (ompio_file_t *file)
 147 {
 148     return OMPI_SUCCESS;
 149 }

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