nfs4_op_putrootfh.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_file_handle.h"
#include "nfs_tools.h"

static int CreateROOTFH4(nfs_fh4 * fh, compound_data_t * data)
{
  pseudofs_entry_t psfsentry;
  int              status = 0;

  psfsentry = *(data->pseudofs->reverse_tab[0]);

  if((status = nfs4_AllocateFH(&(data->rootFH))) != NFS4_OK)
    return status;

  if(!nfs4_PseudoToFhandle(&(data->rootFH), &psfsentry))
    return NFS4ERR_BADHANDLE;

  LogHandleNFS4("CREATE ROOT FH: ", &data->rootFH);

  return NFS4_OK;
}                               /* CreateROOTFH4 */

#define arg_PUTROOTFH4 op->nfs_argop4_u.opputrootfh
#define res_PUTROOTFH4 resp->nfs_resop4_u.opputrootfh

int nfs4_op_putrootfh(struct nfs_argop4 *op,
                      compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_putrootfh";

  /* This NFS4 Operation has no argument, it just get then ROOTFH (replace MOUNTPROC3_MNT) */

  /* First of all, set the reply to zero to make sure it contains no parasite information */
  memset(resp, 0, sizeof(struct nfs_resop4));
  resp->resop = NFS4_OP_PUTROOTFH;

  res_PUTROOTFH4.status = CreateROOTFH4(&(data->rootFH), data);
  if(res_PUTROOTFH4.status != NFS4_OK)
    return res_PUTROOTFH4.status;

  if (data->current_entry) {
      cache_inode_put(data->current_entry);
  }
  data->current_entry = NULL;   /* No cache inode entry for the directory within pseudo fs */
  data->current_filetype = DIRECTORY;      /* Only directory in the pseudo fs */

  /* I copy the root FH to the currentFH and, if not already done, to the publicFH */
  /* For the moment, I choose to have rootFH = publicFH */
  /* For initial mounted_on_FH, I'll use the rootFH, this will change at junction traversal */
  if(data->currentFH.nfs_fh4_len == 0)
    {
      res_PUTROOTFH4.status = nfs4_AllocateFH(&(data->currentFH));
      if(res_PUTROOTFH4.status != NFS4_OK)
        return res_PUTROOTFH4.status;
    }
  memcpy((char *)(data->currentFH.nfs_fh4_val), (char *)(data->rootFH.nfs_fh4_val),
         data->rootFH.nfs_fh4_len);
  data->currentFH.nfs_fh4_len = data->rootFH.nfs_fh4_len;

  if(data->mounted_on_FH.nfs_fh4_len == 0)
    {
      res_PUTROOTFH4.status = nfs4_AllocateFH(&(data->mounted_on_FH));
      if(res_PUTROOTFH4.status != NFS4_OK)
        return res_PUTROOTFH4.status;
    }
  memcpy((char *)(data->mounted_on_FH.nfs_fh4_val), (char *)(data->rootFH.nfs_fh4_val),
         data->rootFH.nfs_fh4_len);
  data->mounted_on_FH.nfs_fh4_len = data->rootFH.nfs_fh4_len;

  if(data->publicFH.nfs_fh4_len == 0)
    {
      res_PUTROOTFH4.status = nfs4_AllocateFH(&(data->publicFH));
      if(res_PUTROOTFH4.status != NFS4_OK)
        return res_PUTROOTFH4.status;
    }
  /* Copy the data where they are supposed to be */
  memcpy((char *)(data->publicFH.nfs_fh4_val), (char *)(data->rootFH.nfs_fh4_val),
         data->rootFH.nfs_fh4_len);
  data->publicFH.nfs_fh4_len = data->rootFH.nfs_fh4_len;

  LogHandleNFS4("NFS4 PUTROOTFH ROOT    FH: ", &data->rootFH);
  LogHandleNFS4("NFS4 PUTROOTFH CURRENT FH: ", &data->currentFH);

  LogFullDebug(COMPONENT_NFS_V4,
                    "NFS4 PUTROOTFH: Ending on status %d",
                    res_PUTROOTFH4.status);

  return res_PUTROOTFH4.status;
}                               /* nfs4_op_putrootfh */

void nfs4_op_putrootfh_Free(PUTROOTFH4res * resp)
{
  /* Nothing to be done */
  return;
}                               /* nfs4_op_putrootfh_Free */