fsal_fsinfo.c

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/*
 * Copyright (C) 2010 The Linx Box Corporation
 * Contributor : Adam C. Emerson
 *
 * Some Portions Copyright CEA/DAM/DIF  (2008)
 * contributeur : Philippe DENIEL   philippe.deniel@cea.fr
 *                Thomas LEIBOVICI  thomas.leibovici@cea.fr
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * ---------------------------------------
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "fsal.h"
#include "fsal_internal.h"
#include "fsal_convert.h"

fsal_status_t CEPHFSAL_dynamic_fsinfo(fsal_handle_t * exthandle,
                                      fsal_op_context_t * extcontext,
                                      fsal_dynamicfsinfo_t * dynamicinfo)
{
  int rc;
  struct statvfs st;
  cephfsal_handle_t* handle = (cephfsal_handle_t*) exthandle;
  cephfsal_op_context_t* context = (cephfsal_op_context_t*) extcontext;

  /* sanity checks. */
  if(!handle || !dynamicinfo || !extcontext)
    Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_dynamic_fsinfo);

  TakeTokenFSCall();

  rc = ceph_ll_statfs(context->export_context->cmount, VINODE(handle), &st);

  ReleaseTokenFSCall();

  if (rc < 0)
    Return(posix2fsal_error(rc), 0, INDEX_FSAL_dynamic_fsinfo);

  memset(dynamicinfo, sizeof(fsal_dynamicfsinfo_t), 0);
  dynamicinfo->total_bytes = st.f_frsize*st.f_blocks;
  dynamicinfo->free_bytes = st.f_frsize*st.f_bfree;
  dynamicinfo->avail_bytes = st.f_frsize*st.f_bavail;
  dynamicinfo->total_files = st.f_files;
  dynamicinfo->free_files = st.f_ffree;
  dynamicinfo->avail_files = st.f_favail;
  dynamicinfo->time_delta.seconds=1;
  dynamicinfo->time_delta.nseconds=0;

  Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_dynamic_fsinfo);
}