nfs4_op_verify.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_proto_tools.h"
#include "nfs_tools.h"
#include "nfs_file_handle.h"

#define arg_VERIFY4 op->nfs_argop4_u.opverify
#define res_VERIFY4 resp->nfs_resop4_u.opverify

int nfs4_op_verify(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_verify";

  fsal_attrib_list_t   file_attr;
  cache_inode_status_t cache_status;
  fattr4               file_attr4;
  int                  rc = 0;

  resp->resop = NFS4_OP_VERIFY;
  res_VERIFY4.status = NFS4_OK;

  /* Do basic checks on a filehandle */
  res_VERIFY4.status = nfs4_sanity_check_FH(data, 0LL);
  if(res_VERIFY4.status != NFS4_OK)
    return res_VERIFY4.status;

  /* operation is always permitted on pseudofs */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    {
      res_VERIFY4.status = NFS4_OK;
      return res_VERIFY4.status;
    }

  /* Get only attributes that are allowed to be read */
  if(!nfs4_Fattr_Check_Access(&arg_VERIFY4.obj_attributes, FATTR4_ATTR_READ))
    {
      res_VERIFY4.status = NFS4ERR_INVAL;
      return res_VERIFY4.status;
    }

  /* Ask only for supported attributes */
  if(!nfs4_Fattr_Supported(&arg_VERIFY4.obj_attributes))
    {
      res_VERIFY4.status = NFS4ERR_ATTRNOTSUPP;
      return res_VERIFY4.status;
    }

  /* Get the cache inode attribute */
  if((cache_status = cache_inode_getattr(data->current_entry,
                                         &file_attr,
                                         data->pcontext,
                                         &cache_status)) != CACHE_INODE_SUCCESS)
    {
      res_VERIFY4.status = NFS4ERR_INVAL;
      return res_VERIFY4.status;
    }

  if(nfs4_FSALattr_To_Fattr(data->pexport,
                            &file_attr,
                            &file_attr4,
                            data,
                            &(data->currentFH),
                            &(arg_VERIFY4.obj_attributes.attrmask)) != 0)
    {
      res_VERIFY4.status = NFS4ERR_SERVERFAULT;
      return res_VERIFY4.status;
    }

  if((rc = nfs4_Fattr_cmp(&(arg_VERIFY4.obj_attributes), &file_attr4)) == TRUE)
    res_VERIFY4.status = NFS4_OK;
  else
    {
      if(rc == -1)
        res_VERIFY4.status = NFS4ERR_INVAL;
      else
        res_VERIFY4.status = NFS4ERR_NOT_SAME;
    }

  nfs4_Fattr_Free(&file_attr4);
  return res_VERIFY4.status;
}                               /* nfs4_op_verify */

void nfs4_op_verify_Free(VERIFY4res * resp)
{
  /* Nothing to be done */
  return;
}                               /* nfs4_op_verify_Free */