cache_content_init.c

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/*
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 * 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

#ifdef _SOLARIS
#include "solaris_port.h"
#endif                          /* _SOLARIS */

#include "LRU_List.h"
#include "log.h"
#include "HashData.h"
#include "HashTable.h"
#include "fsal.h"
#include "cache_inode.h"
#include "cache_content.h"

#include <unistd.h>
#include <sys/types.h>
#include <sys/param.h>
#include <time.h>
#include <pthread.h>
#include <errno.h>
#include <string.h>

int cache_content_init(cache_content_client_parameter_t param,
                       cache_content_status_t * pstatus)
{
  /* Try to create the cache directory */
  if(mkdir(param.cache_dir, 0750) != 0 && errno != EEXIST)
    {
      /* Cannot create the directory for caching data */
      fprintf(stderr, "Can't create cache dir = %s, error = ( %d, %s )\n",
              param.cache_dir, errno, strerror(errno));

      *pstatus = CACHE_CONTENT_INVALID_ARGUMENT;
      return -1;
    }

  /* Successfull exit */
  return 0;
}                               /* cache_content_init */

int cache_content_init_dir(cache_content_client_parameter_t param,
                           unsigned short export_id)
{
  char path_to_dir[MAXPATHLEN];

  snprintf(path_to_dir, MAXPATHLEN, "%s/export_id=%d", param.cache_dir, 0);

  if(mkdir(path_to_dir, 0750) != 0 && errno != EEXIST)
    {
      return -1;
    }

  return 0;
}                               /* cache_content_init_dir */

int cache_content_client_init(cache_content_client_t * pclient,
                              cache_content_client_parameter_t param,
                              char *name)
{
  pclient->nb_prealloc = param.nb_prealloc_entry;
  pclient->flush_force_fsal = param.flush_force_fsal;
  pclient->max_fd = param.max_fd ;
  pclient->use_fd_cache = param.use_fd_cache;
  strncpy(pclient->cache_dir, param.cache_dir, MAXPATHLEN);

  pclient->content_pool = pool_init("Data Cache Client Pool",
                                    sizeof(cache_content_entry_t),
                                    pool_basic_substrate,
                                    NULL, NULL, NULL);
  if(!(pclient->content_pool))
    {
      LogCrit(COMPONENT_CACHE_CONTENT,
              "Error : can't init data_cache client entry pool");
      return 1;
    }

  /* Successfull exit */
  return 0;
}                               /* cache_content_init */