nfs4_op_getattr.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

#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <fcntl.h>
#include <sys/file.h>           /* for having FNDELAY */
#include "HashData.h"
#include "HashTable.h"
#include "log.h"
#include "ganesha_rpc.h"
#include "nfs23.h"
#include "nfs4.h"
#include "mount.h"
#include "nfs_core.h"
#include "cache_inode.h"
#include "nfs_exports.h"
#include "nfs_creds.h"
#include "nfs_proto_functions.h"
#include "nfs_tools.h"
#include "nfs_proto_tools.h"
#include "nfs_file_handle.h"

#define arg_GETATTR4 op->nfs_argop4_u.opgetattr
#define res_GETATTR4 resp->nfs_resop4_u.opgetattr

int nfs4_op_getattr(struct nfs_argop4 *op,
                    compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_getattr";

  fsal_attrib_list_t   attr;
  cache_inode_status_t cache_status;

  /* This is a NFS4_OP_GETTAR */
  resp->resop = NFS4_OP_GETATTR;
  res_GETATTR4.status = NFS4_OK;

  /* Do basic checks on a filehandle */
  res_GETATTR4.status = nfs4_sanity_check_FH(data, 0LL);
  if(res_GETATTR4.status != NFS4_OK)
    return res_GETATTR4.status;

  /* Pseudo Fs management */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    return nfs4_op_getattr_pseudo(op, data, resp);

  if (nfs_export_check_security(data->reqp, data->pexport) == FALSE)
    {
      res_GETATTR4.status = NFS4ERR_PERM;
      return res_GETATTR4.status;
    }

  /* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
  if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
    return nfs4_op_getattr_xattr(op, data, resp);

  if(isFullDebug(COMPONENT_NFS_V4))
    {
      char str[LEN_FH_STR];
      sprint_fhandle4(str, &data->currentFH);
      LogFullDebug(COMPONENT_NFS_V4, "NFS4_OP_GETATTR: Current FH %s", str);
    }

  /* Sanity check: if no attributes are wanted, nothing is to be done.
   * In this case NFS4_OK is to be returned */
  if(arg_GETATTR4.attr_request.bitmap4_len == 0)
    {
      res_GETATTR4.status = NFS4_OK;
      return res_GETATTR4.status;
    }

  /* Get only attributes that are allowed to be read */
  if(!nfs4_Fattr_Check_Access_Bitmap(&arg_GETATTR4.attr_request, FATTR4_ATTR_READ))
    {
      res_GETATTR4.status = NFS4ERR_INVAL;
      return res_GETATTR4.status;
    }

  if( !nfs4_bitmap4_Remove_Unsupported( &arg_GETATTR4.attr_request ) )
    {
      res_GETATTR4.status = NFS4ERR_SERVERFAULT ;
      return res_GETATTR4.status;
    }


  /*
   * Get attributes.
   */
  if(cache_inode_getattr(data->current_entry,
                         &attr,
                         data->pcontext, &cache_status) == CACHE_INODE_SUCCESS)
    {
      if(nfs4_FSALattr_To_Fattr(data->pexport,
                                &attr,
                                &(res_GETATTR4.GETATTR4res_u.resok4.obj_attributes),
                                data,
                                &(data->currentFH), &(arg_GETATTR4.attr_request)) != 0)
        res_GETATTR4.status = NFS4ERR_SERVERFAULT;
      else
        res_GETATTR4.status = NFS4_OK;

      return res_GETATTR4.status;
    }
  res_GETATTR4.status = nfs4_Errno(cache_status);

  return res_GETATTR4.status;
}                               /* nfs4_op_getattr */

void nfs4_op_getattr_Free(GETATTR4res * resp)
{
  if(resp->status == NFS4_OK)
    nfs4_Fattr_Free(&resp->GETATTR4res_u.resok4.obj_attributes);
  return;
}                               /* nfs4_op_getattr_Free */