Ejemplo n.º 1
0
int nfs4_op_savefh(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  int error;

  /* 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_SAVEFH;
  resp->nfs_resop4_u.opsavefh.status = NFS4_OK;

  /* If there is no currentFH, teh  return an error */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      /* There is no current FH, return NFS4ERR_NOFILEHANDLE */
      resp->nfs_resop4_u.opsavefh.status = NFS4ERR_NOFILEHANDLE;
      return NFS4ERR_NOFILEHANDLE;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      resp->nfs_resop4_u.opgetfh.status = NFS4ERR_BADHANDLE;
      return NFS4ERR_BADHANDLE;
    }

  /* Tests if teh Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      resp->nfs_resop4_u.opgetfh.status = NFS4ERR_FHEXPIRED;
      return NFS4ERR_FHEXPIRED;
    }

  /* If the savefh is not allocated, do it now */
  if(data->savedFH.nfs_fh4_len == 0)
    {
      if((error = nfs4_AllocateFH(&(data->savedFH))) != NFS4_OK)
        {
          resp->nfs_resop4_u.opsavefh.status = error;
          return error;
        }
    }

  /* Copy the data from current FH to saved FH */
  memcpy((char *)(data->savedFH.nfs_fh4_val), (char *)(data->currentFH.nfs_fh4_val),
         data->currentFH.nfs_fh4_len);

  /* Keep the vnodep in mind */
  data->saved_entry = data->current_entry;
  data->saved_filetype = data->current_filetype;

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

  return NFS4_OK;
}                               /* nfs4_op_savefh */
Ejemplo n.º 2
0
int nfs41_op_layoutget(struct nfs_argop4 *op, compound_data_t * data,
                       struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs41_op_layoutget";

  resp->resop = NFS4_OP_LAYOUTGET;

#ifndef _USE_PNFS
  resp->resop = NFS4_OP_LAYOUTGET;
  res_LAYOUTGET4.logr_status = NFS4ERR_NOTSUPP;
  return res_LAYOUTGET4.logr_status;
#else
  /* Lock are not supported */
  resp->resop = NFS4_OP_LAYOUTGET;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_NOFILEHANDLE;
      return res_LAYOUTGET4.logr_status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_BADHANDLE;
      return res_LAYOUTGET4.logr_status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_FHEXPIRED;
      return res_LAYOUTGET4.logr_status;
    }

  /* Commit is done only on a file */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* Type of the entry is not correct */
      switch (data->current_filetype)
        {
        case DIRECTORY:
          res_LAYOUTGET4.logr_status = NFS4ERR_ISDIR;
          break;
        default:
          res_LAYOUTGET4.logr_status = NFS4ERR_INVAL;
          break;
        }

      return res_LAYOUTGET4.logr_status;
    }

  /* Call underlying function */
  return pnfs_layoutget( &arg_LAYOUTGET4, data, &res_LAYOUTGET4 ) ;
#endif                          /* _USE_PNFS */
}                               /* nfs41_op_layoutget */
Ejemplo n.º 3
0
int nfs4_op_putpubfh(struct nfs_argop4 *op,
                     compound_data_t * data, struct nfs_resop4 *resp)
{
  int error;

  resp->resop = NFS4_OP_PUTPUBFH;
  res_PUTPUBFH4.status =  NFS4_OK  ; 

  /* For now, GANESHA makes no difference betzeen PUBLICFH and ROOTFH */
  if((error = CreatePUBFH4(&(data->publicFH), data)) != NFS4_OK)
    {
      res_PUTPUBFH4.status = error;
      return res_PUTPUBFH4.status;
    }

  /* If there is no currentFH, teh  return an error */
  if(nfs4_Is_Fh_Empty(&(data->publicFH)))
    {
      /* There is no current FH, return NFS4ERR_NOFILEHANDLE */
      res_PUTPUBFH4.status = NFS4ERR_NOFILEHANDLE;
      return res_PUTPUBFH4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->publicFH)))
    {
      res_PUTPUBFH4.status = NFS4ERR_BADHANDLE;
      return res_PUTPUBFH4.status;
    }

  /* Tests if teh Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->publicFH)))
    {
      res_PUTPUBFH4.status = NFS4ERR_FHEXPIRED;
      return res_PUTPUBFH4.status;
    }

  /* 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)
    {
      if((error = nfs4_AllocateFH(&(data->currentFH))) != NFS4_OK)
        {
          res_PUTPUBFH4.status = error;
          return res_PUTPUBFH4.status;
        }
    }

  /* Copy the data from current FH to saved FH */
  memcpy((char *)(data->currentFH.nfs_fh4_val), (char *)(data->publicFH.nfs_fh4_val),
         data->publicFH.nfs_fh4_len);

  res_PUTPUBFH4.status = NFS4_OK ;

  return res_PUTPUBFH4.status;
}                               /* nfs4_op_putpubfh */
Ejemplo n.º 4
0
int nfs41_op_layoutreturn(struct nfs_argop4 *op, compound_data_t * data,
                          struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs41_op_layoutreturn";

#ifndef _USE_PNFS
  res_LAYOUTRETURN4.lorr_status = NFS4ERR_NOTSUPP;
  return res_LAYOUTRETURN4.lorr_status;
#else

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LAYOUTRETURN4.lorr_status = NFS4ERR_NOFILEHANDLE;
      return res_LAYOUTRETURN4.lorr_status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LAYOUTRETURN4.lorr_status = NFS4ERR_BADHANDLE;
      return res_LAYOUTRETURN4.lorr_status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LAYOUTRETURN4.lorr_status = NFS4ERR_FHEXPIRED;
      return res_LAYOUTRETURN4.lorr_status;
    }

  /* Commit is done only on a file */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* Type of the entry is not correct */
      switch (data->current_filetype)
        {
        case DIR_BEGINNING:
        case DIR_CONTINUE:
          res_LAYOUTRETURN4.lorr_status = NFS4ERR_ISDIR;
          break;
        default:
          res_LAYOUTRETURN4.lorr_status = NFS4ERR_INVAL;
          break;
        }

      return res_LAYOUTRETURN4.lorr_status;
    }

  res_LAYOUTRETURN4.lorr_status = NFS4_OK;
  return res_LAYOUTRETURN4.lorr_status;
#endif                          /* _USE_PNFS */
}                               /* nfs41_op_layoutreturn */
Ejemplo n.º 5
0
int nfs4_op_restorefh(struct nfs_argop4 *op,
                      compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_restorefh";

  /* 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_RESTOREFH;
  res_RESTOREFH.status = NFS4_OK;

  /* If there is no currentFH, teh return an error */
  if(nfs4_Is_Fh_Empty(&(data->savedFH)))
    {
      /* There is no current FH, return NFS4ERR_RESTOREFH (cg RFC3530,
         page 202) */
      res_RESTOREFH.status = NFS4ERR_RESTOREFH;
      return res_RESTOREFH.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->savedFH)))
    {
      res_RESTOREFH.status = NFS4ERR_BADHANDLE;
      return res_RESTOREFH.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->savedFH)))
    {
      res_RESTOREFH.status = NFS4ERR_FHEXPIRED;
      return res_RESTOREFH.status;
    }

  /* If data->exportp is null, a junction from pseudo fs was
     traversed, credp and exportp have to be updated */
  if(data->pexport == NULL)
    {
      res_RESTOREFH.status = nfs4_SetCompoundExport(data);
      if(res_RESTOREFH.status != NFS4_OK)
        {
          LogCrit(COMPONENT_NFS_V4,
                  "Error %d in nfs4_SetCompoundExport", res_RESTOREFH.status);
          return res_RESTOREFH.status;
        }
    }

  /* Copy the data from current FH to saved FH */
  memcpy(data->currentFH.nfs_fh4_val,
         data->savedFH.nfs_fh4_val,
         data->savedFH.nfs_fh4_len);

  data->currentFH.nfs_fh4_len = data->savedFH.nfs_fh4_len;

  /* If current and saved entry are identical, get no references and
     make no changes. */

  if (data->current_entry == data->saved_entry) {
      goto out;
  }

  if (data->current_entry) {
      cache_inode_put(data->current_entry);
      data->current_entry = NULL;
  }

  data->current_entry = data->saved_entry;
  data->current_filetype = data->saved_filetype;

  /* Take another reference.  As of now the filehandle is both saved
     and current and both must be counted.  Protect in case of
     pseudofs handle. */

  if (data->current_entry) {
       if (cache_inode_lru_ref(data->current_entry,
                               LRU_FLAG_NONE) != CACHE_INODE_SUCCESS) {
            resp->nfs_resop4_u.opgetfh.status = NFS4ERR_STALE;
            data->current_entry = NULL;
            return resp->nfs_resop4_u.opgetfh.status;
       }
  }

 out:

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


  return NFS4_OK;
}                               /* nfs4_op_restorefh */
Ejemplo n.º 6
0
int nfs41_op_read(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs41_op_read";

  fsal_seek_t seek_descriptor;
  fsal_size_t size;
  fsal_size_t read_size;
  fsal_off_t offset;
  fsal_boolean_t eof_met;
  caddr_t bufferdata;
  cache_inode_status_t cache_status;
  cache_inode_state_t *pstate_found = NULL;
  cache_content_status_t content_status;
  fsal_attrib_list_t attr;
  cache_entry_t *entry = NULL;
  cache_inode_state_t *pstate_iterate = NULL;
  cache_inode_state_t *pstate_previous_iterate = NULL;
  int rc = 0;

  cache_content_policy_data_t datapol;

  datapol.UseMaxCacheSize = FALSE;

  /* Say we are managing NFS4_OP_READ */
  resp->resop = NFS4_OP_READ;
  res_READ4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_READ4.status = NFS4ERR_NOFILEHANDLE;
      return res_READ4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_READ4.status = NFS4ERR_BADHANDLE;
      return res_READ4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_READ4.status = NFS4ERR_FHEXPIRED;
      return res_READ4.status;
    }

  /* vnode to manage is the current one */
  entry = data->current_entry;

  /* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
  if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
    return nfs4_op_read_xattr(op, data, resp);

  /* Manage access type MDONLY */
  if(data->pexport->access_type == ACCESSTYPE_MDONLY)
    {
      res_READ4.status = NFS4ERR_DQUOT;
      return res_READ4.status;
    }

  /* Check for special stateid */
  if(!memcmp((char *)all_zero, arg_READ4.stateid.other, 12) &&
     arg_READ4.stateid.seqid == 0)
    {
      /* "All 0 stateid special case" */
      /* This will be treated as a client that held no lock at all,
       * I set pstate_found to NULL to remember this situation later */
      pstate_found = NULL;
    }
  else if(!memcmp((char *)all_one, arg_READ4.stateid.other, 12) &&
          arg_READ4.stateid.seqid == 0xFFFFFFFF)
    {
      /* "All 1 stateid special case" */
      /* This will be treated as a client that held no lock at all, but may goes through locks 
       * I set pstate_found to 1 to remember this situation later */
      pstate_found = NULL;
    }

  /* NB: After this points, if pstate_found == NULL, then the stateid is all-0 or all-1 */

  /* Iterate through file's state to look for conflicts */
  pstate_iterate = NULL;
  pstate_previous_iterate = NULL;
  do
    {
      cache_inode_state_iterate(data->current_entry,
                                &pstate_iterate,
                                pstate_previous_iterate,
                                data->pclient, data->pcontext, &cache_status);
      if(cache_status == CACHE_INODE_STATE_ERROR)
        break;                  /* Get out of the loop */

      if(cache_status == CACHE_INODE_INVALID_ARGUMENT)
        {
          res_READ4.status = NFS4ERR_INVAL;
          return res_READ4.status;
        }

      if(pstate_iterate != NULL)
        {
          switch (pstate_iterate->state_type)
            {
            case CACHE_INODE_STATE_SHARE:
              if(pstate_found != pstate_iterate)
                {
                  if(pstate_iterate->state_data.share.share_deny & OPEN4_SHARE_DENY_READ)
                    {
                      /* Writing to this file if prohibited, file is write-denied */
                      res_READ4.status = NFS4ERR_LOCKED;
                      return res_READ4.status;
                    }
                }
              break;
            }
        }
      pstate_previous_iterate = pstate_iterate;
    }
  while(pstate_iterate != NULL);

  /* Only files can be read */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* If the source is no file, return EISDIR if it is a directory and EINAVL otherwise */
      if(data->current_filetype == DIR_BEGINNING
         || data->current_filetype == DIR_CONTINUE)
        res_READ4.status = NFS4ERR_ISDIR;
      else
        res_READ4.status = NFS4ERR_INVAL;

      return res_READ4.status;
    }

  /* Get the size and offset of the read operation */
  offset = arg_READ4.offset;
  size = arg_READ4.count;

  LogFullDebug(COMPONENT_NFS_V4, "   NFS4_OP_READ: offset = %llu  length = %llu\n", offset, size);

  if((data->pexport->options & EXPORT_OPTION_MAXOFFSETREAD) ==
     EXPORT_OPTION_MAXOFFSETREAD)
    if((fsal_off_t) (offset + size) > data->pexport->MaxOffsetRead)
      {
        res_READ4.status = NFS4ERR_DQUOT;
        return res_READ4.status;
      }

  /* Do not read more than FATTR4_MAXREAD */
  if((data->pexport->options & EXPORT_OPTION_MAXREAD == EXPORT_OPTION_MAXREAD) &&
     size > data->pexport->MaxRead)
    {
      /* the client asked for too much data, 
       * this should normally not happen because 
       * client will get FATTR4_MAXREAD value at mount time */
      size = data->pexport->MaxRead;
    }

  /* If size == 0 , no I/O is to be made and everything is alright */
  if(size == 0)
    {
      res_READ4.READ4res_u.resok4.eof = FALSE;  /* end of file was not reached because READ occured, and a size = 0 can not lead to eof */
      res_READ4.READ4res_u.resok4.data.data_len = 0;
      res_READ4.READ4res_u.resok4.data.data_val = NULL;

      res_READ4.status = NFS4_OK;
      return res_READ4.status;
    }

  if((data->pexport->options & EXPORT_OPTION_USE_DATACACHE) &&
     (entry->object.file.pentry_content == NULL))
    {
      /* Entry is not in datacache, but should be in, cache it .
       * Several threads may call this function at the first time and a race condition can occur here
       * in order to avoid this, cache_inode_add_data_cache is "mutex protected" 
       * The first call will create the file content cache entry, the further will return
       * with error CACHE_INODE_CACHE_CONTENT_EXISTS which is not a pathological thing here */

      datapol.UseMaxCacheSize = data->pexport->options & EXPORT_OPTION_MAXCACHESIZE;
      datapol.MaxCacheSize = data->pexport->MaxCacheSize;

      /* Status is set in last argument */
      cache_inode_add_data_cache(entry, data->ht, data->pclient, data->pcontext,
                                 &cache_status);

      if((cache_status != CACHE_INODE_SUCCESS) &&
         (cache_content_cache_behaviour(entry,
                                        &datapol,
                                        (cache_content_client_t *) (data->pclient->
                                                                    pcontent_client),
                                        &content_status) == CACHE_CONTENT_FULLY_CACHED)
         && (cache_status != CACHE_INODE_CACHE_CONTENT_EXISTS))
        {
          res_READ4.status = NFS4ERR_SERVERFAULT;
          return res_READ4.status;
        }

    }

  /* Some work is to be done */
  if((bufferdata = (char *)Mem_Alloc(size)) == NULL)
    {
      res_READ4.status = NFS4ERR_SERVERFAULT;
      return res_READ4.status;
    }
  memset((char *)bufferdata, 0, size);

  seek_descriptor.whence = FSAL_SEEK_SET;
  seek_descriptor.offset = offset;

  if(cache_inode_rdwr(entry,
                      CACHE_CONTENT_READ,
                      &seek_descriptor,
                      size,
                      &read_size,
                      &attr,
                      bufferdata,
                      &eof_met,
                      data->ht,
                      data->pclient,
                      data->pcontext, TRUE, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_READ4.status = nfs4_Errno(cache_status);
      return res_READ4.status;
    }

  /* What is the filesize ? */
  if((offset + read_size) > attr.filesize)
    res_READ4.READ4res_u.resok4.eof = TRUE;

  res_READ4.READ4res_u.resok4.data.data_len = read_size;
  res_READ4.READ4res_u.resok4.data.data_val = bufferdata;

  LogFullDebug(COMPONENT_NFS_V4,"   NFS4_OP_READ: offset = %llu  read length = %llu eof=%u\n", offset, read_size,
         eof_met);

  /* Is EOF met or not ? */
  if(eof_met == TRUE)
    res_READ4.READ4res_u.resok4.eof = TRUE;
  else
    res_READ4.READ4res_u.resok4.eof = FALSE;

  /* Say it is ok */
  res_READ4.status = NFS4_OK;

  return res_READ4.status;
}                               /* nfs41_op_read */
Ejemplo n.º 7
0
int nfs41_op_write(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs41_op_write";

  fsal_seek_t seek_descriptor;
  fsal_size_t size;
  fsal_size_t written_size;
  fsal_off_t offset;
  fsal_boolean_t eof_met;
  bool_t stable_flag = TRUE;
  caddr_t bufferdata;
  stable_how4 stable_how;
  cache_content_status_t content_status;
  cache_inode_state_t *pstate_found = NULL;
  cache_inode_status_t cache_status;
  fsal_attrib_list_t attr;
  cache_entry_t *entry = NULL;
  cache_inode_state_t *pstate_iterate = NULL;
  cache_inode_state_t *pstate_previous_iterate = NULL;

  int rc = 0;

  cache_content_policy_data_t datapol;

  datapol.UseMaxCacheSize = FALSE;

  /* Lock are not supported */
  resp->resop = NFS4_OP_WRITE;
  res_WRITE4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_WRITE4.status = NFS4ERR_NOFILEHANDLE;
      return res_WRITE4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_WRITE4.status = NFS4ERR_BADHANDLE;
      return res_WRITE4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_WRITE4.status = NFS4ERR_FHEXPIRED;
      return res_WRITE4.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_write_xattr(op, data, resp);

  /* Manage access type MDONLY */
  if(data->pexport->access_type == ACCESSTYPE_MDONLY)
    {
      res_WRITE4.status = NFS4ERR_DQUOT;
      return res_WRITE4.status;
    }

  /* vnode to manage is the current one */
  entry = data->current_entry;

  /* Check for special stateid */
  if(!memcmp((char *)all_zero, arg_WRITE4.stateid.other, 12) &&
     arg_WRITE4.stateid.seqid == 0)
    {
      /* "All 0 stateid special case", see RFC3530 page 220-221 for details 
       * This will be treated as a client that held no lock at all,
       * I set pstate_found to NULL to remember this situation later */
      pstate_found = NULL;
    }
  else if(!memcmp((char *)all_one, arg_WRITE4.stateid.other, 12) &&
          arg_WRITE4.stateid.seqid == 0xFFFFFFFF)
    {
      /* "All 1 stateid special case", see RFC3530 page 220-221 for details 
       * This will be treated as a client that held no lock at all,
       * I set pstate_found to NULL to remember this situation later */
      pstate_found = NULL;
    }

  /* NB: After this points, if pstate_found == NULL, then the stateid is all-0 or all-1 */

  /* Iterate through file's state to look for conflicts */
  pstate_iterate = NULL;
  pstate_previous_iterate = NULL;
  do
    {
      cache_inode_state_iterate(data->current_entry,
                                &pstate_iterate,
                                pstate_previous_iterate,
                                data->pclient, data->pcontext, &cache_status);
      if(cache_status == CACHE_INODE_STATE_ERROR)
        break;                  /* Get out of the loop */

      if(cache_status == CACHE_INODE_INVALID_ARGUMENT)
        {
          res_WRITE4.status = NFS4ERR_INVAL;
          return res_WRITE4.status;
        }

      if(pstate_iterate != NULL)
        {
          switch (pstate_iterate->state_type)
            {
            case CACHE_INODE_STATE_SHARE:
              if(pstate_found != pstate_iterate)
                {
                  if(pstate_iterate->state_data.share.share_deny & OPEN4_SHARE_DENY_WRITE)
                    {
                      /* Writing to this file if prohibited, file is write-denied */
                      res_WRITE4.status = NFS4ERR_LOCKED;
                      return res_WRITE4.status;
                    }
                }
              break;
            }
        }
      pstate_previous_iterate = pstate_iterate;
    }
  while(pstate_iterate != NULL);

  /* Only files can be written */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* If the destination is no file, return EISDIR if it is a directory and EINAVL otherwise */
      if(data->current_filetype == DIR_BEGINNING
         || data->current_filetype == DIR_CONTINUE)
        res_WRITE4.status = NFS4ERR_ISDIR;
      else
        res_WRITE4.status = NFS4ERR_INVAL;

      return res_WRITE4.status;
    }

  /* Get the characteristics of the I/O to be made */
  offset = arg_WRITE4.offset;
  size = arg_WRITE4.data.data_len;
  stable_how = arg_WRITE4.stable;
  LogFullDebug(COMPONENT_NFS_V4,"   NFS4_OP_WRITE: offset = %llu  length = %llu   stable = %d\n", offset, size,
         stable_how);

  if((data->pexport->options & EXPORT_OPTION_MAXOFFSETWRITE) ==
     EXPORT_OPTION_MAXOFFSETWRITE)
    if((fsal_off_t) (offset + size) > data->pexport->MaxOffsetWrite)
      {
        res_WRITE4.status = NFS4ERR_DQUOT;
        return res_WRITE4.status;
      }

  /* The size to be written should not be greater than FATTR4_MAXWRITESIZE because this value is asked 
   * by the client at mount time, but we check this by security */
  if((data->pexport->options & EXPORT_OPTION_MAXWRITE == EXPORT_OPTION_MAXWRITE) &&
     size > data->pexport->MaxWrite)
    {
      /*
       * The client asked for too much data, we
       * must restrict him 
       */
      size = data->pexport->MaxWrite;
    }

  /* Where are the data ? */
  bufferdata = arg_WRITE4.data.data_val;

  LogFullDebug(COMPONENT_NFS_V4, "             NFS4_OP_WRITE: offset = %llu  length = %llu\n", offset, size);

  /* if size == 0 , no I/O) are actually made and everything is alright */
  if(size == 0)
    {
      res_WRITE4.WRITE4res_u.resok4.count = 0;
      res_WRITE4.WRITE4res_u.resok4.committed = FILE_SYNC4;

      memcpy(res_WRITE4.WRITE4res_u.resok4.writeverf, NFS4_write_verifier,
             sizeof(verifier4));

      res_WRITE4.status = NFS4_OK;
      return res_WRITE4.status;
    }

  if((data->pexport->options & EXPORT_OPTION_USE_DATACACHE) &&
     (cache_content_cache_behaviour(entry,
                                    &datapol,
                                    (cache_content_client_t *) (data->pclient->
                                                                pcontent_client),
                                    &content_status) == CACHE_CONTENT_FULLY_CACHED)
     && (entry->object.file.pentry_content == NULL))
    {
      /* Entry is not in datacache, but should be in, cache it .
       * Several threads may call this function at the first time and a race condition can occur here
       * in order to avoid this, cache_inode_add_data_cache is "mutex protected" 
       * The first call will create the file content cache entry, the further will return
       * with error CACHE_INODE_CACHE_CONTENT_EXISTS which is not a pathological thing here */

      datapol.UseMaxCacheSize = data->pexport->options & EXPORT_OPTION_MAXCACHESIZE;
      datapol.MaxCacheSize = data->pexport->MaxCacheSize;

      /* Status is set in last argument */
      cache_inode_add_data_cache(entry, data->ht, data->pclient, data->pcontext,
                                 &cache_status);

      if((cache_status != CACHE_INODE_SUCCESS) &&
         (cache_status != CACHE_INODE_CACHE_CONTENT_EXISTS))
        {
          res_WRITE4.status = NFS4ERR_SERVERFAULT;
          return res_WRITE4.status;
        }

    }

  if((nfs_param.core_param.use_nfs_commit == TRUE) && (arg_WRITE4.stable == UNSTABLE4))
    {
      stable_flag = FALSE;
    }
  else
    {
      stable_flag = TRUE;
    }

  /* An actual write is to be made, prepare it */
  /* only FILE_SYNC mode is supported */
  /* Set up uio to define the transfer */
  seek_descriptor.whence = FSAL_SEEK_SET;
  seek_descriptor.offset = offset;

  if(cache_inode_rdwr(entry,
                      CACHE_CONTENT_WRITE,
                      &seek_descriptor,
                      size,
                      &written_size,
                      &attr,
                      bufferdata,
                      &eof_met,
                      data->ht,
                      data->pclient,
                      data->pcontext, stable_flag, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_WRITE4.status = nfs4_Errno(cache_status);
      return res_WRITE4.status;
    }

  /* Set the returned value */
  if(stable_flag == TRUE)
    res_WRITE4.WRITE4res_u.resok4.committed = FILE_SYNC4;
  else
    res_WRITE4.WRITE4res_u.resok4.committed = UNSTABLE4;

  res_WRITE4.WRITE4res_u.resok4.count = written_size;
  memcpy(res_WRITE4.WRITE4res_u.resok4.writeverf, NFS4_write_verifier, sizeof(verifier4));

  res_WRITE4.status = NFS4_OK;

  return res_WRITE4.status;
}                               /* nfs41_op_write */
Ejemplo n.º 8
0
int nfs4_op_lookup(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  fsal_name_t name;
  char strname[MAXNAMLEN];
#ifndef _NO_XATTRD
  char objname[MAXNAMLEN];
#endif
  unsigned int xattr_found = FALSE;
  cache_entry_t *dir_pentry = NULL;
  cache_entry_t *file_pentry = NULL;
  fsal_attrib_list_t attrlookup;
  cache_inode_status_t cache_status;

  fsal_handle_t *pfsal_handle = NULL;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_lookup";

  resp->resop = NFS4_OP_LOOKUP;
  res_LOOKUP4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LOOKUP4.status = NFS4ERR_NOFILEHANDLE;
      return res_LOOKUP4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LOOKUP4.status = NFS4ERR_BADHANDLE;
      return res_LOOKUP4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LOOKUP4.status = NFS4ERR_FHEXPIRED;
      return res_LOOKUP4.status;
    }

  /* Check for empty name */
  if(op->nfs_argop4_u.oplookup.objname.utf8string_len == 0 ||
     op->nfs_argop4_u.oplookup.objname.utf8string_val == NULL)
    {
      res_LOOKUP4.status = NFS4ERR_INVAL;
      return res_LOOKUP4.status;
    }

  /* Check for name to long */
  if(op->nfs_argop4_u.oplookup.objname.utf8string_len > FSAL_MAX_NAME_LEN)
    {
      res_LOOKUP4.status = NFS4ERR_NAMETOOLONG;
      return res_LOOKUP4.status;
    }

  /* If Filehandle points to a pseudo fs entry, manage it via pseudofs specific functions */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    return nfs4_op_lookup_pseudo(op, data, resp);

#ifndef _NO_XATTRD
  /* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
  if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
    return nfs4_op_lookup_xattr(op, data, resp);
#endif

  /* UTF8 strings may not end with \0, but they carry their length */
  utf82str(strname, sizeof(strname), &arg_LOOKUP4.objname);

#ifndef _NO_XATTRD
  /* Is this a .xattr.d.<object> name ? */
  if(nfs_XattrD_Name(strname, objname))
    {
      strcpy(strname, objname);
      xattr_found = TRUE;
    }
#endif

  if((cache_status = cache_inode_error_convert(FSAL_str2name(strname,
                                                             MAXNAMLEN,
                                                             &name))) !=
     CACHE_INODE_SUCCESS)
    {
      res_LOOKUP4.status = nfs4_Errno(cache_status);
      return res_LOOKUP4.status;
    }

  /* No 'cd .' is allowed return NFS4ERR_BADNAME in this case */
  /* No 'cd .. is allowed, return EINVAL in this case. NFS4_OP_LOOKUPP should be use instead */
  if(!FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT)
     || !FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT_DOT))
    {
      res_LOOKUP4.status = NFS4ERR_BADNAME;
      return res_LOOKUP4.status;
    }

  /* Do the lookup in the HPSS Namespace */
  file_pentry = NULL;
  dir_pentry = data->current_entry;

  /* Sanity check: dir_pentry should be ACTUALLY a directory */
  if(dir_pentry->internal_md.type != DIR_BEGINNING
     && dir_pentry->internal_md.type != DIR_CONTINUE)
    {
      /* This is not a directory */
      if(dir_pentry->internal_md.type == SYMBOLIC_LINK)
        res_LOOKUP4.status = NFS4ERR_SYMLINK;
      else
        res_LOOKUP4.status = NFS4ERR_NOTDIR;

      /* Return failed status */
      return res_LOOKUP4.status;
    }

  /* BUGAZOMEU: Faire la gestion des cross junction traverse */
  if((file_pentry = cache_inode_lookup(dir_pentry,
                                       &name,
                                       &attrlookup,
                                       data->ht,
                                       data->pclient,
                                       data->pcontext, &cache_status)) != NULL)
    {
      /* Extract the fsal attributes from the cache inode pentry */
      pfsal_handle = cache_inode_get_fsal_handle(file_pentry, &cache_status);

      if(cache_status != CACHE_INODE_SUCCESS)
        {
          res_LOOKUP4.status = NFS4ERR_SERVERFAULT;
          return res_LOOKUP4.status;
        }

      /* Convert it to a file handle */
      if(!nfs4_FSALToFhandle(&data->currentFH, pfsal_handle, data))
        {
          res_LOOKUP4.status = NFS4ERR_SERVERFAULT;
          return res_LOOKUP4.status;
        }

      /* Copy this to the mounted on FH (if no junction is traversed */
      memcpy((char *)(data->mounted_on_FH.nfs_fh4_val),
             (char *)(data->currentFH.nfs_fh4_val), data->currentFH.nfs_fh4_len);
      data->mounted_on_FH.nfs_fh4_len = data->currentFH.nfs_fh4_len;

#if 0
      print_buff((char *)cache_inode_get_fsal_handle(file_pentry, &cache_status),
                 sizeof(fsal_handle_t));
      print_buff((char *)cache_inode_get_fsal_handle(dir_pentry, &cache_status),
                 sizeof(fsal_handle_t));
#endif
      if(isFullDebug(COMPONENT_NFS_V4))
        {
          LogFullDebug(COMPONENT_NFS_V4,
                       "----> nfs4_op_lookup: name=%s  dir_pentry=%p  looked up pentry=%p",
                       strname, dir_pentry, file_pentry);
          LogFullDebug(COMPONENT_NFS_V4,
                       "----> FSAL handle parent puis fils dans nfs4_op_lookup");
          print_buff(COMPONENT_NFS_V4,
                     (char *)cache_inode_get_fsal_handle(file_pentry, &cache_status),
                     sizeof(fsal_handle_t));
          print_buff(COMPONENT_NFS_V4,
                     (char *)cache_inode_get_fsal_handle(dir_pentry, &cache_status),
                     sizeof(fsal_handle_t));
        }
      LogHandleNFS4("NFS4 LOOKUP CURRENT FH: ", &data->currentFH);

      /* Keep the pointer within the compound data */
      data->current_entry = file_pentry;
      data->current_filetype = file_pentry->internal_md.type;

      /* Return successfully */
      res_LOOKUP4.status = NFS4_OK;

#ifndef _NO_XATTRD
      /* If this is a xattr ghost directory name, update the FH */
      if(xattr_found == TRUE)
        res_LOOKUP4.status = nfs4_fh_to_xattrfh(&(data->currentFH), &(data->currentFH));
#endif

      if((data->current_entry->internal_md.type == DIR_BEGINNING) &&
         (data->current_entry->object.dir_begin.referral != NULL))
        {
          if(!nfs4_Set_Fh_Referral(&(data->currentFH)))
            {
              res_LOOKUP4.status = NFS4ERR_SERVERFAULT;
              return res_LOOKUP4.status;
            }
        }

      return NFS4_OK;

    }

  /* If the part of the code is reached, then something wrong occured in the lookup process, status is not HPSS_E_NOERROR 
   * and contains the code for the error */

  res_LOOKUP4.status = nfs4_Errno(cache_status);

  return res_LOOKUP4.status;
}                               /* nfs4_op_lookup */
Ejemplo n.º 9
0
int nfs41_op_locku(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs41_op_locku";
  cache_inode_status_t cache_status;
  cache_inode_state_t *pstate_found = NULL;
  cache_inode_state_t *pstate_open = NULL;
  unsigned int rc = 0;

  /* Lock are not supported */
  resp->resop = NFS4_OP_LOCKU;

#ifdef _WITH_NO_NFSV4_LOCKS
  res_LOCKU4.status = NFS4ERR_LOCK_NOTSUPP;
  return res_LOCKU4.status;
#else

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LOCKU4.status = NFS4ERR_NOFILEHANDLE;
      return res_LOCKU4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LOCKU4.status = NFS4ERR_BADHANDLE;
      return res_LOCKU4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LOCKU4.status = NFS4ERR_FHEXPIRED;
      return res_LOCKU4.status;
    }

  /* Commit is done only on a file */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* Type of the entry is not correct */
      switch (data->current_filetype)
        {
        case DIR_BEGINNING:
        case DIR_CONTINUE:
          res_LOCKU4.status = NFS4ERR_ISDIR;
          break;
        default:
          res_LOCKU4.status = NFS4ERR_INVAL;
          break;
        }
    }

  /* Lock length should not be 0 */
  if(arg_LOCKU4.length == 0LL)
    {
      res_LOCKU4.status = NFS4ERR_INVAL;
      return res_LOCKU4.status;
    }

  /* Check for range overflow 
   * Remember that a length with all bits set to 1 means "lock until the end of file" (RFC3530, page 157) */
  if(arg_LOCKU4.length != 0xffffffffffffffffLL)
    {
      /* Comparing beyond 2^64 is not possible int 64 bits precision, but off+len > 2^64 is equivalent to len > 2^64 - off */
      if(arg_LOCKU4.length > (0xffffffffffffffffLL - arg_LOCKU4.offset))
        {
          res_LOCKU4.status = NFS4ERR_INVAL;
          return res_LOCKU4.status;
        }
    }

  /* Check for correctness of the provided stateid */
  if((rc = nfs4_Check_Stateid(&arg_LOCKU4.lock_stateid,
                              data->current_entry, data->psession->clientid)) != NFS4_OK)
    {
      res_LOCKU4.status = rc;
      return res_LOCKU4.status;
    }

  /* Get the related state */
  if(cache_inode_get_state(arg_LOCKU4.lock_stateid.other,
                           &pstate_found,
                           data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      if(cache_status == CACHE_INODE_NOT_FOUND)
        res_LOCKU4.status = NFS4ERR_LOCK_RANGE;
      else
        res_LOCKU4.status = nfs4_Errno(cache_status);

      return res_LOCKU4.status;
    }

  pstate_open = (cache_inode_state_t *) (pstate_found->state_data.lock.popenstate);
  memcpy(res_LOCKU4.LOCKU4res_u.lock_stateid.other, pstate_found->stateid_other, 12);

  /* update the lock counter in the related open-stateid */
  pstate_open->state_data.share.lockheld -= 1;

  /* Remove the state associated with the lock */
  if(cache_inode_del_state(pstate_found,
                           data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_LOCKU4.status = nfs4_Errno(cache_status);
      return res_LOCKU4.status;
    }


  /* Successful exit */
  res_LOCKU4.status = NFS4_OK;
  return res_LOCKU4.status;
#endif
}                               /* nfs41_op_locku */
Ejemplo n.º 10
0
int nfs4_op_rename(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_rename";

  cache_entry_t        * dst_entry = NULL;
  cache_entry_t        * src_entry = NULL;
  cache_entry_t        * tst_entry_dst = NULL;
  cache_entry_t        * tst_entry_src = NULL;
  fsal_attrib_list_t     attr_dst;
  fsal_attrib_list_t     attr_src;
  fsal_attrib_list_t     attr_tst_dst;
  fsal_attrib_list_t     attr_tst_src;
  cache_inode_status_t   cache_status;
  fsal_status_t          fsal_status;
  fsal_handle_t        * handlenew = NULL;
  fsal_handle_t        * handleold = NULL;
  fsal_name_t            oldname;
  fsal_name_t            newname;

  resp->resop = NFS4_OP_RENAME;
  res_RENAME4.status = NFS4_OK;

  /* Do basic checks on a filehandle */
  res_RENAME4.status = nfs4_sanity_check_FH(data, 0LL);
  if(res_RENAME4.status != NFS4_OK)
    return res_RENAME4.status;

  /* Do basic checks on saved filehandle */

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->savedFH)))
    {
      res_RENAME4.status = NFS4ERR_NOFILEHANDLE;
      return res_RENAME4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->savedFH)))
    {
      res_RENAME4.status = NFS4ERR_BADHANDLE;
      return res_RENAME4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->savedFH)))
    {
      res_RENAME4.status = NFS4ERR_FHEXPIRED;
      return res_RENAME4.status;
    }

  /* Pseudo Fs is explictely a Read-Only File system */
  if(nfs4_Is_Fh_Pseudo(&(data->savedFH)))
    {
      res_RENAME4.status = NFS4ERR_ROFS;
      return res_RENAME4.status;
    }

  if (nfs_in_grace())
    {
      res_RENAME4.status = NFS4ERR_GRACE;
      return res_RENAME4.status;
    }

  /* get the names from the RPC input */
  cache_status = utf8_to_name(&arg_RENAME4.oldname, &oldname);

  if(cache_status != CACHE_INODE_SUCCESS)
    {
      res_RENAME4.status = nfs4_Errno(cache_status);
      return res_RENAME4.status;
    }

  cache_status = utf8_to_name(&arg_RENAME4.newname, &newname);

  if(cache_status != CACHE_INODE_SUCCESS)
    {
      res_RENAME4.status = nfs4_Errno(cache_status);
      return res_RENAME4.status;
    }

  /* Sanuty check: never rename to '.' or '..' */
  if(!FSAL_namecmp(&newname, (fsal_name_t *) & FSAL_DOT)
     || !FSAL_namecmp(&newname, (fsal_name_t *) & FSAL_DOT_DOT))
    {
      res_RENAME4.status = NFS4ERR_BADNAME;
      return res_RENAME4.status;
    }

  /* Sanuty check: never rename to '.' or '..' */
  if(!FSAL_namecmp(&oldname, (fsal_name_t *) & FSAL_DOT)
     || !FSAL_namecmp(&oldname, (fsal_name_t *) & FSAL_DOT_DOT))
    {
      res_RENAME4.status = NFS4ERR_BADNAME;
      return res_RENAME4.status;
    }

  /*
   * This operation renames 
   *             - the object in directory pointed by savedFH, named arg_RENAME4.oldname
   *       into
   *             - an object in directory pointed by currentFH, named arg_RENAME4.newname
   *
   * Because of this, we will use 2 entry and we have verified both currentFH and savedFH */

  /* No Cross Device */
  if(((file_handle_v4_t *) (data->currentFH.nfs_fh4_val))->exportid !=
     ((file_handle_v4_t *) (data->savedFH.nfs_fh4_val))->exportid)
    {
      res_RENAME4.status = NFS4ERR_XDEV;
      return res_RENAME4.status;
    }

  /* destination must be a directory */
  dst_entry = data->current_entry;

  if(data->current_filetype != DIRECTORY)
    {
      res_RENAME4.status = NFS4ERR_NOTDIR;
      return res_RENAME4.status;
    }

  /* Convert saved FH into a vnode */
  src_entry = data->saved_entry;

  /* Source must be a directory */
  if(data->saved_filetype != DIRECTORY)
    {
      res_RENAME4.status = NFS4ERR_NOTDIR;
      return res_RENAME4.status;
    }

  /* Renaming a file to himself is allowed, returns NFS4_OK */
  if(src_entry == dst_entry)
    {
      if(!FSAL_namecmp(&oldname, &newname))
        {
          res_RENAME4.status = NFS4_OK;
          return res_RENAME4.status;
        }
    }

  /* For the change_info4, get the 'change' attributes for both directories */
  if((cache_status = cache_inode_getattr(src_entry,
                                         &attr_src,
                                         data->pcontext,
                                         &cache_status)) != CACHE_INODE_SUCCESS)
    {
      res_RENAME4.status = nfs4_Errno(cache_status);
      return res_RENAME4.status;
    }
#ifdef BUGAZOMEU
  /* Ne devrait pas se produire dans le cas de exportid differents */

  /* Both object must resides on the same filesystem, return NFS4ERR_XDEV if not */
  if(attr_src.va_rdev != attr_dst.va_rdev)
    {
      res_RENAME4.status = NFS4ERR_XDEV;
      return res_RENAME4.status;
    }
#endif
  /* Lookup oldfile to see if it exists (refcount +1) */
  if((tst_entry_src = cache_inode_lookup(src_entry,
                                         &oldname,
                                         &attr_tst_src,
                                         data->pcontext,
                                         &cache_status)) == NULL)
    {
      res_RENAME4.status = nfs4_Errno(cache_status);
      goto release;
    }

  /* Lookup file with new name to see if it already exists (refcount +1),
   * I expect to get NO_ERROR or ENOENT, anything else means an error */
  tst_entry_dst = cache_inode_lookup(dst_entry,
                                     &newname,
                                     &attr_tst_dst,
                                     data->pcontext,
                                     &cache_status);
  if((cache_status != CACHE_INODE_SUCCESS) &&
     (cache_status != CACHE_INODE_NOT_FOUND))
    {
        /* Unexpected status at this step, exit with an error */
        res_RENAME4.status = nfs4_Errno(cache_status);
        goto release;
    }

  if(cache_status == CACHE_INODE_NOT_FOUND)
    tst_entry_dst = NULL;       /* Just to make sure */

  /* Renaming a file to one of its own hardlink is allowed, return NFS4_OK */
  if(tst_entry_src == tst_entry_dst) {
      res_RENAME4.status = NFS4_OK;
      goto release;
    }

  /* Renaming dir into existing file should return NFS4ERR_EXIST */
  if ((tst_entry_src->type == DIRECTORY) &&
      ((tst_entry_dst != NULL) &&
       (tst_entry_dst->type == REGULAR_FILE)))
    {
      res_RENAME4.status = NFS4ERR_EXIST;
      goto release;
    }

  /* Renaming file into existing dir should return NFS4ERR_EXIST */
  if(tst_entry_src->type == REGULAR_FILE)
    {
      if(tst_entry_dst != NULL)
        {
          if(tst_entry_dst->type == DIRECTORY)
            {
              res_RENAME4.status = NFS4ERR_EXIST;
              goto release;
            }
        }
    }

  /* Renaming dir1 into existing, nonempty dir2 should return NFS4ERR_EXIST
   * Renaming file into existing, nonempty dir should return NFS4ERR_EXIST */
  if(tst_entry_dst != NULL)
    {
      if((tst_entry_dst->type == DIRECTORY)
         && ((tst_entry_src->type == DIRECTORY)
             || (tst_entry_src->type == REGULAR_FILE)))
        {
          if(cache_inode_is_dir_empty_WithLock(tst_entry_dst) ==
             CACHE_INODE_DIR_NOT_EMPTY)
            {
              res_RENAME4.status = NFS4ERR_EXIST;
              goto release;
            }
        }
    }

  res_RENAME4.RENAME4res_u.resok4.source_cinfo.before
       = cache_inode_get_changeid4(src_entry);
  res_RENAME4.RENAME4res_u.resok4.target_cinfo.before
       = cache_inode_get_changeid4(dst_entry);

  if(cache_status == CACHE_INODE_SUCCESS)
    {
      /* New entry already exists, its attributes are in attr_tst_*,
         check for old entry to see if types are compatible */
      handlenew = &tst_entry_dst->handle;
      handleold = &tst_entry_src->handle;

      if(!FSAL_handlecmp(handlenew, handleold, &fsal_status))
        {
          /* For the change_info4, get the 'change' attributes for both directories */
          res_RENAME4.RENAME4res_u.resok4.source_cinfo.before
            = cache_inode_get_changeid4(src_entry);
          res_RENAME4.RENAME4res_u.resok4.target_cinfo.before
            = cache_inode_get_changeid4(dst_entry);
          res_RENAME4.RENAME4res_u.resok4.target_cinfo.atomic = FALSE;
          res_RENAME4.RENAME4res_u.resok4.source_cinfo.atomic = FALSE;

          res_RENAME4.status = NFS4_OK;
          goto release;
        }
      else
        {
          /* Destination exists and is something different from source */
          if(( tst_entry_src->type == REGULAR_FILE &&
              tst_entry_dst->type == REGULAR_FILE ) ||
              ( tst_entry_src->type == DIRECTORY &&
              tst_entry_dst->type == DIRECTORY ))
            {
              if(cache_inode_rename(src_entry,
                                    &oldname,
                                    dst_entry,
                                    &newname,
                                    &attr_src,
                                    &attr_dst,
                                    data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
               {

                 res_RENAME4.status = nfs4_Errno(cache_status);
                 goto release;
               }
            }
          else
            { 
              res_RENAME4.status = NFS4ERR_EXIST;
              goto release;
            }
        }
    }
  else
    {
      /* New entry does not already exist, call cache_entry_rename */
      if(cache_inode_rename(src_entry,
                            &oldname,
                            dst_entry,
                            &newname,
                            &attr_src,
                            &attr_dst,
                            data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
        {
          res_RENAME4.status = nfs4_Errno(cache_status);
          goto release;
        }
    }

  /* If you reach this point, then everything was alright */
  /* For the change_info4, get the 'change' attributes for both directories */

  res_RENAME4.RENAME4res_u.resok4.source_cinfo.after =
       cache_inode_get_changeid4(src_entry);
  res_RENAME4.RENAME4res_u.resok4.target_cinfo.after =
       cache_inode_get_changeid4(dst_entry);
  res_RENAME4.RENAME4res_u.resok4.target_cinfo.atomic = FALSE;
  res_RENAME4.RENAME4res_u.resok4.source_cinfo.atomic = FALSE;
  res_RENAME4.status = nfs4_Errno(cache_status);

release:
  if (tst_entry_src)
      (void) cache_inode_put(tst_entry_src);
  if (tst_entry_dst)
      (void) cache_inode_put(tst_entry_dst);

  return (res_RENAME4.status);
}                               /* nfs4_op_rename */
Ejemplo n.º 11
0
int nfs4_op_putfh(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  int rc;
  int error;
  fsal_attrib_list_t attr;
  char outstr[1024];

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_putfh";

  resp->resop = NFS4_OP_PUTFH;
  res_PUTFH4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(arg_PUTFH4.object)))
    {
      res_PUTFH4.status = NFS4ERR_NOFILEHANDLE;
      return res_PUTFH4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(arg_PUTFH4.object)))
    {
      res_PUTFH4.status = NFS4ERR_BADHANDLE;
      return res_PUTFH4.status;
    }

  /* Tests if teh Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(arg_PUTFH4.object)))
    {
      res_PUTFH4.status = NFS4ERR_FHEXPIRED;
      return res_PUTFH4.status;
    }

  /* If no currentFH were set, allocate one */
  if(data->currentFH.nfs_fh4_len == 0)
    {
      if((error = nfs4_AllocateFH(&(data->currentFH))) != NFS4_OK)
        {
          res_PUTFH4.status = error;
          return res_PUTFH4.status;
        }
    }

  /* The same is to be done with mounted_on_FH */
  if(data->mounted_on_FH.nfs_fh4_len == 0)
    {
      if((error = nfs4_AllocateFH(&(data->mounted_on_FH))) != NFS4_OK)
        {
          res_PUTFH4.status = error;
          return res_PUTFH4.status;
        }
    }

  /* Copy the filehandle from the reply structure */
  data->currentFH.nfs_fh4_len = arg_PUTFH4.object.nfs_fh4_len;
  data->mounted_on_FH.nfs_fh4_len = arg_PUTFH4.object.nfs_fh4_len;

  /* Put the data in place */
  memcpy(data->currentFH.nfs_fh4_val, arg_PUTFH4.object.nfs_fh4_val,
         arg_PUTFH4.object.nfs_fh4_len);
  memcpy(data->mounted_on_FH.nfs_fh4_val, arg_PUTFH4.object.nfs_fh4_val,
         arg_PUTFH4.object.nfs_fh4_len);

  nfs4_sprint_fhandle(&arg_PUTFH4.object, outstr);
  LogDebug(COMPONENT_NFS_V4, "NFS4_OP_PUTFH CURRENTFH BEFORE: File handle = %s", outstr);

  /* If the filehandle is not pseudo hs file handle, get the entry related to it, otherwise use fake values */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    {
      data->current_entry = NULL;
      data->current_filetype = DIR_BEGINNING;
      data->pexport = NULL;     /* No exportlist is related to pseudo fs */
    }
  else
    {
      /* If data->exportp is null, a junction from pseudo fs was traversed, credp and exportp have to be updated */
      if(data->pexport == NULL)
        {
          if((error = nfs4_SetCompoundExport(data)) != NFS4_OK)
            {
              res_PUTFH4.status = error;
              return res_PUTFH4.status;
            }
        }

      /* Build the pentry */
      if((data->current_entry = nfs_FhandleToCache(NFS_V4,
                                                   NULL,
                                                   NULL,
                                                   &(data->currentFH),
                                                   NULL,
                                                   NULL,
                                                   &(res_PUTFH4.status),
                                                   &attr,
                                                   data->pcontext,
                                                   data->pclient, data->ht, &rc)) == NULL)
        {
          res_PUTFH4.status = NFS4ERR_BADHANDLE;
          return res_PUTFH4.status;
        }

      /* Extract the filetype */
      data->current_filetype = cache_inode_fsal_type_convert(attr.type);

    }

  /* Trace */

  return NFS4_OK;
}                               /* nfs4_op_putfh */
Ejemplo n.º 12
0
int nfs4_op_link(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_link";

  cache_entry_t        * dir_pentry = NULL;
  cache_entry_t        * file_pentry = NULL;
  cache_inode_status_t   cache_status;
  fsal_attrib_list_t     attr;
  fsal_name_t            newname;

  resp->resop = NFS4_OP_LINK;
  res_LINK4.status = NFS4_OK;

  /* Do basic checks on a filehandle */
  res_LINK4.status = nfs4_sanity_check_FH(data, 0LL);
  if(res_LINK4.status != NFS4_OK)
    return res_LINK4.status;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->savedFH)))
    {
      res_LINK4.status = NFS4ERR_NOFILEHANDLE;
      return res_LINK4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->savedFH)))
    {
      res_LINK4.status = NFS4ERR_BADHANDLE;
      return res_LINK4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->savedFH)))
    {
      res_LINK4.status = NFS4ERR_FHEXPIRED;
      return res_LINK4.status;
    }

  /* Pseudo Fs is explictely a Read-Only File system */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    {
      res_LINK4.status = NFS4ERR_ROFS;
      return res_LINK4.status;
    }

  /* If data->exportp is null, a junction from pseudo fs was traversed, credp and exportp have to be updated */
  if(data->pexport == NULL)
    {
      res_LINK4.status = nfs4_SetCompoundExport(data);
      if(res_LINK4.status != NFS4_OK)
        return res_LINK4.status;
    }

  /*
   * This operation creates a hard link, for the file represented by the saved FH, in directory represented by currentFH under the 
   * name arg_LINK4.target 
   */

  /* Crossing device is not allowed */
  if(((file_handle_v4_t *) (data->currentFH.nfs_fh4_val))->exportid !=
     ((file_handle_v4_t *) (data->savedFH.nfs_fh4_val))->exportid)
    {
      res_LINK4.status = NFS4ERR_XDEV;
      return res_LINK4.status;
    }

  /* If name is empty, return EINVAL */
  if(arg_LINK4.newname.utf8string_len == 0)
    {
      res_LINK4.status = NFS4ERR_INVAL;
      return res_LINK4.status;
    }

  /* Check for name to long */
  if(arg_LINK4.newname.utf8string_len > FSAL_MAX_NAME_LEN)
    {
      res_LINK4.status = NFS4ERR_NAMETOOLONG;
      return res_LINK4.status;
    }

  /* Convert the UFT8 objname to a regular string */
  if((cache_status =
      cache_inode_error_convert(FSAL_buffdesc2name
                                ((fsal_buffdesc_t *) & arg_LINK4.newname,
                                 &newname))) != CACHE_INODE_SUCCESS)
    {
      res_LINK4.status = nfs4_Errno(cache_status);
      return res_LINK4.status;
    }

  /* Sanity check: never create a link named '.' or '..' */
  if(!FSAL_namecmp(&newname, (fsal_name_t *) & FSAL_DOT)
     || !FSAL_namecmp(&newname, (fsal_name_t *) & FSAL_DOT_DOT))
    {
      res_LINK4.status = NFS4ERR_BADNAME;
      return res_LINK4.status;
    }

  /* get info from compound data */
  dir_pentry = data->current_entry;

  /* Destination FH (the currentFH) must be a directory */
  if(data->current_filetype != DIRECTORY)
    {
      res_LINK4.status = NFS4ERR_NOTDIR;
      return res_LINK4.status;
    }

  /* Target object (the savedFH) must not be a directory */
  if(data->saved_filetype == DIRECTORY)
    {
      res_LINK4.status = NFS4ERR_ISDIR;
      return res_LINK4.status;
    }

  /* We have to keep track of the 'change' file attribute for reply structure */
  if((cache_status = cache_inode_getattr(dir_pentry,
                                         &attr,
                                         data->pcontext,
                                         &cache_status)) != CACHE_INODE_SUCCESS)
    {
      res_LINK4.status = nfs4_Errno(cache_status);
      return res_LINK4.status;
    }
  res_LINK4.LINK4res_u.resok4.cinfo.before
       = cache_inode_get_changeid4(dir_pentry);

  /* Convert savedFH into a vnode */
  file_pentry = data->saved_entry;

  /* make the link */
  if(cache_inode_link(file_pentry,
                      dir_pentry,
                      &newname,
                      &attr,
                      data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_LINK4.status = nfs4_Errno(cache_status);
      return res_LINK4.status;
    }

  res_LINK4.LINK4res_u.resok4.cinfo.after
       = cache_inode_get_changeid4(dir_pentry);
  res_LINK4.LINK4res_u.resok4.cinfo.atomic = FALSE;

  res_LINK4.status = NFS4_OK;
  return NFS4_OK;
}                               /* nfs4_op_link */
Ejemplo n.º 13
0
/**
 *
 * nfs4_op_getattr: Gets attributes for an entry in the FSAL.
 * 
 * Gets attributes for an entry in the FSAL.
 *
 * @param op    [IN]    pointer to nfs4_op arguments
 * @param data  [INOUT] Pointer to the compound request's data
 * @param resp  [IN]    Pointer to nfs4_op results
 * 
 * @return NFS4_OK 
 * 
 */
int nfs4_op_getattr(struct nfs_argop4 *op,
                    compound_data_t * data, struct nfs_resop4 *resp)
{
  fsal_attrib_list_t attr;
  cache_inode_status_t cache_status;
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_getattr";

  /* This is a NFS4_OP_GETTAR */
  resp->resop = NFS4_OP_GETATTR;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_GETATTR4.status = NFS4ERR_NOFILEHANDLE;
      return NFS4ERR_NOFILEHANDLE;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_GETATTR4.status = NFS4ERR_BADHANDLE;
      return NFS4ERR_BADHANDLE;
    }

  /* Tests if teh Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_GETATTR4.status = NFS4ERR_FHEXPIRED;
      return NFS4ERR_FHEXPIRED;
    }

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

  /* 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->ht,
                         data->pclient,
                         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 */
Ejemplo n.º 14
0
int nfs41_op_open(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
    cache_entry_t *pentry_parent = NULL;
    cache_entry_t *pentry_lookup = NULL;
    cache_entry_t *pentry_newfile = NULL;
    fsal_handle_t *pnewfsal_handle = NULL;
    fsal_attrib_list_t attr_parent;
    fsal_attrib_list_t attr;
    fsal_attrib_list_t attr_newfile;
    fsal_attrib_list_t sattr;
    fsal_openflags_t openflags = 0;
    cache_inode_status_t cache_status;
    nfsstat4 rc;
    int retval;
    fsal_name_t filename;
    bool_t AttrProvided = FALSE;
    fsal_accessmode_t mode = 0600;
    nfs_fh4 newfh4;
    nfs_client_id_t nfs_clientid;
    nfs_worker_data_t *pworker = NULL;
    int convrc = 0;
    char __attribute__ ((__unused__)) funcname[] = "nfs4_op_open";

    cache_inode_state_data_t candidate_data;
    cache_inode_state_type_t candidate_type;
    cache_inode_state_t *pfile_state = NULL;
    cache_inode_state_t *pstate_found_iterate = NULL;
    cache_inode_state_t *pstate_previous_iterate = NULL;
    cache_inode_state_t *pstate_found_same_owner = NULL;

    cache_inode_open_owner_name_t owner_name;
    cache_inode_open_owner_name_t *powner_name = NULL;
    cache_inode_open_owner_t *powner = NULL;
    bool_t open_owner_known = FALSE;

    resp->resop = NFS4_OP_OPEN;
    res_OPEN4.status = NFS4_OK;

    uint32_t tmp_attr[2];
    uint_t tmp_int = 2;

    int pnfs_status;
    cache_inode_create_arg_t create_arg;

    pworker = (nfs_worker_data_t *) data->pclient->pworker;

    /* If there is no FH */
    if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
        res_OPEN4.status = NFS4ERR_NOFILEHANDLE;
        return res_OPEN4.status;
    }

    /* If the filehandle is invalid */
    if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
        res_OPEN4.status = NFS4ERR_BADHANDLE;
        return res_OPEN4.status;
    }

    /* Tests if the Filehandle is expired (for volatile filehandle) */
    if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
        res_OPEN4.status = NFS4ERR_FHEXPIRED;
        return res_OPEN4.status;
    }

    /* This can't be done on the pseudofs */
    if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    {
        res_OPEN4.status = NFS4ERR_ROFS;
        return res_OPEN4.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_open_xattr(op, data, resp);

    /* If data->current_entry is empty, repopulate it */
    if(data->current_entry == NULL)
    {
        if((data->current_entry = nfs_FhandleToCache(NFS_V4,
                                  NULL,
                                  NULL,
                                  &(data->currentFH),
                                  NULL,
                                  NULL,
                                  &(res_OPEN4.status),
                                  &attr,
                                  data->pcontext,
                                  data->pclient,
                                  data->ht, &retval)) == NULL)
        {
            res_OPEN4.status = NFS4ERR_SERVERFAULT;
            return res_OPEN4.status;
        }
    }

    /* Set parent */
    pentry_parent = data->current_entry;

    /* First switch is based upon claim type */
    switch (arg_OPEN4.claim.claim)
    {
    case CLAIM_DELEGATE_CUR:
    case CLAIM_DELEGATE_PREV:
        /* Check for name length */
        if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len > FSAL_MAX_NAME_LEN)
        {
            res_OPEN4.status = NFS4ERR_NAMETOOLONG;
            return res_OPEN4.status;
        }

        /* get the filename from the argument, it should not be empty */
        if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len == 0)
        {
            res_OPEN4.status = NFS4ERR_INVAL;
            return res_OPEN4.status;
        }

        res_OPEN4.status = NFS4ERR_NOTSUPP;
        return res_OPEN4.status;
        break;

    case CLAIM_NULL:
        /* Check for name length */
        if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len > FSAL_MAX_NAME_LEN)
        {
            res_OPEN4.status = NFS4ERR_NAMETOOLONG;
            return res_OPEN4.status;
        }

        /* get the filename from the argument, it should not be empty */
        if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len == 0)
        {
            res_OPEN4.status = NFS4ERR_INVAL;
            return res_OPEN4.status;
        }

        /* Check if asked attributes are correct */
        if(arg_OPEN4.openhow.openflag4_u.how.mode == GUARDED4 ||
                arg_OPEN4.openhow.openflag4_u.how.mode == UNCHECKED4)
        {
            if(!nfs4_Fattr_Supported
                    (&arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs))
            {
                res_OPEN4.status = NFS4ERR_ATTRNOTSUPP;
                return res_OPEN4.status;
            }

            /* Do not use READ attr, use WRITE attr */
            if(!nfs4_Fattr_Check_Access
                    (&arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs,
                     FATTR4_ATTR_WRITE))
            {
                res_OPEN4.status = NFS4ERR_INVAL;
                return res_OPEN4.status;
            }
        }

        /* Check if filename is correct */
        if((cache_status =
                    cache_inode_error_convert(FSAL_buffdesc2name
                                              ((fsal_buffdesc_t *) & arg_OPEN4.claim.open_claim4_u.
                                               file, &filename))) != CACHE_INODE_SUCCESS)
        {
            res_OPEN4.status = nfs4_Errno(cache_status);
            return res_OPEN4.status;
        }

        /* Check parent */
        pentry_parent = data->current_entry;

        /* Parent must be a directory */
        if((pentry_parent->internal_md.type != DIR_BEGINNING) &&
                (pentry_parent->internal_md.type != DIR_CONTINUE))
        {
            /* Parent object is not a directory... */
            if(pentry_parent->internal_md.type == SYMBOLIC_LINK)
                res_OPEN4.status = NFS4ERR_SYMLINK;
            else
                res_OPEN4.status = NFS4ERR_NOTDIR;

            return res_OPEN4.status;
        }

        /* What kind of open is it ? */

        LogFullDebug(COMPONENT_NFS_V4,
                     "     OPEN: Claim type = %d   Open Type = %d  Share Deny = %d   Share Access = %d \n",
                     arg_OPEN4.claim.claim, arg_OPEN4.openhow.opentype, arg_OPEN4.share_deny,
                     arg_OPEN4.share_access);


        /* It this a known client id ? */
        LogDebug(COMPONENT_NFS_V4, "OPEN Client id = %llx", arg_OPEN4.owner.clientid);

        /* Is this open_owner known ? */
        if(!nfs_convert_open_owner(&arg_OPEN4.owner, &owner_name))
        {
            res_OPEN4.status = NFS4ERR_SERVERFAULT;
            return res_OPEN4.status;
        }

        if(!nfs_open_owner_Get_Pointer(&owner_name, &powner))
        {
            /* This open owner is not known yet, allocated and set up a new one */
            GET_PREALLOC(powner,
                         data->pclient->pool_open_owner,
                         data->pclient->nb_pre_state_v4, cache_inode_open_owner_t, next);

            GET_PREALLOC(powner_name,
                         data->pclient->pool_open_owner_name,
                         data->pclient->nb_pre_state_v4,
                         cache_inode_open_owner_name_t, next);

            if(powner == NULL || powner_name == NULL)
            {
                res_OPEN4.status = NFS4ERR_SERVERFAULT;
                return res_OPEN4.status;
            }

            memcpy((char *)powner_name, (char *)&owner_name,
                   sizeof(cache_inode_open_owner_name_t));

            /* set up the content of the open_owner */
            powner->confirmed = FALSE;
            powner->seqid = 1;    /* NFSv4.1 specific, initial seqid is 1 */
            powner->related_owner = NULL;
            powner->next = NULL;
            powner->clientid = arg_OPEN4.owner.clientid;
            powner->owner_len = arg_OPEN4.owner.owner.owner_len;
            memcpy((char *)powner->owner_val, (char *)arg_OPEN4.owner.owner.owner_val,
                   arg_OPEN4.owner.owner.owner_len);
            powner->owner_val[powner->owner_len] = '\0';

            pthread_mutex_init(&powner->lock, NULL);

            if(!nfs_open_owner_Set(powner_name, powner))
            {
                res_OPEN4.status = NFS4ERR_SERVERFAULT;
                return res_OPEN4.status;
            }

        }

        /* Status of parent directory before the operation */
        if((cache_status = cache_inode_getattr(pentry_parent,
                                               &attr_parent,
                                               data->ht,
                                               data->pclient,
                                               data->pcontext,
                                               &cache_status)) != CACHE_INODE_SUCCESS)
        {
            res_OPEN4.status = nfs4_Errno(cache_status);
            return res_OPEN4.status;
        }
        memset(&(res_OPEN4.OPEN4res_u.resok4.cinfo.before), 0, sizeof(changeid4));
        res_OPEN4.OPEN4res_u.resok4.cinfo.before =
            (changeid4) pentry_parent->internal_md.mod_time;

        /* CLient may have provided fattr4 to set attributes at creation time */
        if(arg_OPEN4.openhow.openflag4_u.how.mode == GUARDED4 ||
                arg_OPEN4.openhow.openflag4_u.how.mode == UNCHECKED4)
        {
            if(arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs.attrmask.
                    bitmap4_len != 0)
            {
                /* Convert fattr4 so nfs4_sattr */
                convrc =
                    nfs4_Fattr_To_FSAL_attr(&sattr,
                                            &(arg_OPEN4.openhow.openflag4_u.how.
                                              createhow4_u.createattrs));

                if(convrc == 0)
                {
                    res_OPEN4.status = NFS4ERR_ATTRNOTSUPP;
                    return res_OPEN4.status;
                }

                if(convrc == -1)
                {
                    res_OPEN4.status = NFS4ERR_BADXDR;
                    return res_OPEN4.status;
                }

                AttrProvided = TRUE;
            }

        }

        /* Second switch is based upon "openhow" */
        switch (arg_OPEN4.openhow.opentype)
        {
        case OPEN4_CREATE:
            /* a new file is to be created */

            /* Does a file with this name already exist ? */
            pentry_lookup = cache_inode_lookup(pentry_parent,
                                               &filename,
                                               &attr_newfile,
                                               data->ht,
                                               data->pclient,
                                               data->pcontext, &cache_status);

            if(cache_status != CACHE_INODE_NOT_FOUND)
            {
                /* if open is UNCHECKED, return NFS4_OK (RFC3530 page 172) */
                if(arg_OPEN4.openhow.openflag4_u.how.mode == UNCHECKED4
                        && (cache_status == CACHE_INODE_SUCCESS))
                {
                    /* If the file is opened for write, OPEN4 while deny share write access,
                     * in this case, check caller has write access to the file */
                    if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE)
                    {
                        if(cache_inode_access(pentry_lookup,
                                              FSAL_W_OK,
                                              data->ht,
                                              data->pclient,
                                              data->pcontext,
                                              &cache_status) != CACHE_INODE_SUCCESS)
                        {
                            res_OPEN4.status = NFS4ERR_ACCESS;
                            return res_OPEN4.status;
                        }
                        openflags = FSAL_O_WRONLY;
                    }

                    /* Same check on read: check for readability of a file before opening it for read */
                    if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_READ)
                    {
                        if(cache_inode_access(pentry_lookup,
                                              FSAL_R_OK,
                                              data->ht,
                                              data->pclient,
                                              data->pcontext,
                                              &cache_status) != CACHE_INODE_SUCCESS)
                        {
                            res_OPEN4.status = NFS4ERR_ACCESS;
                            return res_OPEN4.status;
                        }
                        openflags = FSAL_O_RDONLY;
                    }

                    if(AttrProvided == TRUE)      /* Set the attribute if provided */
                    {
                        if((cache_status = cache_inode_setattr(pentry_lookup,
                                                               &sattr,
                                                               data->ht,
                                                               data->pclient,
                                                               data->pcontext,
                                                               &cache_status)) !=
                                CACHE_INODE_SUCCESS)
                        {
                            res_OPEN4.status = nfs4_Errno(cache_status);
                            return res_OPEN4.status;
                        }

                        res_OPEN4.OPEN4res_u.resok4.attrset =
                            arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs.
                            attrmask;
                    }
                    else
                        res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 0;

                    /* Same check on write */
                    if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE)
                    {
                        if(cache_inode_access(pentry_lookup,
                                              FSAL_W_OK,
                                              data->ht,
                                              data->pclient,
                                              data->pcontext,
                                              &cache_status) != CACHE_INODE_SUCCESS)
                        {
                            res_OPEN4.status = NFS4ERR_ACCESS;
                            return res_OPEN4.status;
                        }
                        openflags = FSAL_O_RDWR;
                    }

                    /* Set the state for the related file */

                    /* Prepare state management structure */
                    candidate_type = CACHE_INODE_STATE_SHARE;
                    candidate_data.share.share_deny = arg_OPEN4.share_deny;
                    candidate_data.share.share_access = arg_OPEN4.share_access;

                    if(cache_inode_add_state(pentry_lookup,
                                             candidate_type,
                                             &candidate_data,
                                             powner,
                                             data->pclient,
                                             data->pcontext,
                                             &pfile_state,
                                             &cache_status) != CACHE_INODE_SUCCESS)
                    {
                        /* Seqid has to be incremented even in this case */
                        P(powner->lock);
                        powner->seqid += 1;
                        V(powner->lock);

                        res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                        return res_OPEN4.status;
                    }

                    /* Open the file */
                    if(cache_inode_open_by_name(pentry_parent,
                                                &filename,
                                                pentry_lookup,
                                                data->pclient,
                                                openflags,
                                                data->pcontext,
                                                &cache_status) != CACHE_INODE_SUCCESS)
                    {
                        /* Seqid has to be incremented even in this case */
                        P(powner->lock);
                        powner->seqid += 1;
                        V(powner->lock);

                        res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                        res_OPEN4.status = NFS4ERR_ACCESS;
                        return res_OPEN4.status;
                    }

                    res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 2;
                    if((res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val =
                                (uint32_t *) Mem_Alloc(res_OPEN4.OPEN4res_u.resok4.attrset.
                                                       bitmap4_len * sizeof(uint32_t))) == NULL)
                    {
                        res_OPEN4.status = NFS4ERR_SERVERFAULT;
                        return res_OPEN4.status;
                    }

                    memset(&(res_OPEN4.OPEN4res_u.resok4.cinfo.after), 0,
                           sizeof(changeid4));
                    res_OPEN4.OPEN4res_u.resok4.cinfo.after =
                        (changeid4) pentry_parent->internal_md.mod_time;
                    res_OPEN4.OPEN4res_u.resok4.cinfo.atomic = TRUE;

                    res_OPEN4.OPEN4res_u.resok4.stateid.seqid = pfile_state->seqid;
                    memcpy(res_OPEN4.OPEN4res_u.resok4.stateid.other,
                           pfile_state->stateid_other, 12);

                    /* No delegation */
                    res_OPEN4.OPEN4res_u.resok4.delegation.delegation_type =
                        OPEN_DELEGATE_NONE;
                    res_OPEN4.OPEN4res_u.resok4.rflags = OPEN4_RESULT_LOCKTYPE_POSIX;

                    /* Now produce the filehandle to this file */
                    if((pnewfsal_handle =
                                cache_inode_get_fsal_handle(pentry_lookup, &cache_status)) == NULL)
                    {
                        res_OPEN4.status = nfs4_Errno(cache_status);
                        return res_OPEN4.status;
                    }

                    /* Allocation of a new file handle */
                    if((rc = nfs4_AllocateFH(&newfh4)) != NFS4_OK)
                    {
                        res_OPEN4.status = rc;
                        return res_OPEN4.status;
                    }

                    /* Building a new fh */
                    if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
                    {
                        res_OPEN4.status = NFS4ERR_SERVERFAULT;
                        return res_OPEN4.status;
                    }

                    /* This new fh replaces the current FH */
                    data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
                    memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val,
                           newfh4.nfs_fh4_len);

                    data->current_entry = pentry_lookup;
                    data->current_filetype = REGULAR_FILE;

                    res_OPEN4.status = NFS4_OK;
                    return res_OPEN4.status;
                }

                /* if open is EXCLUSIVE, but verifier is the same, return NFS4_OK (RFC3530 page 173) */
                if(arg_OPEN4.openhow.openflag4_u.how.mode == EXCLUSIVE4)
                {
                    if((pentry_lookup != NULL)
                            && (pentry_lookup->internal_md.type == REGULAR_FILE))
                    {
                        pstate_found_iterate = NULL;
                        pstate_previous_iterate = NULL;

                        do
                        {
                            cache_inode_state_iterate(pentry_lookup,
                                                      &pstate_found_iterate,
                                                      pstate_previous_iterate,
                                                      data->pclient,
                                                      data->pcontext, &cache_status);
                            if(cache_status == CACHE_INODE_STATE_ERROR)
                                break;

                            if(cache_status == CACHE_INODE_INVALID_ARGUMENT)
                            {
                                /* Seqid has to be incremented even in this case */
                                P(powner->lock);
                                powner->seqid += 1;
                                V(powner->lock);

                                res_OPEN4.status = NFS4ERR_INVAL;
                                return res_OPEN4.status;
                            }

                            /* Check is open_owner is the same */
                            if(pstate_found_iterate != NULL)
                            {
                                if((pstate_found_iterate->state_type ==
                                        CACHE_INODE_STATE_SHARE)
                                        && !memcmp(arg_OPEN4.owner.owner.owner_val,
                                                   pstate_found_iterate->powner->owner_val,
                                                   pstate_found_iterate->powner->owner_len)
                                        && !memcmp(pstate_found_iterate->state_data.share.
                                                   oexcl_verifier,
                                                   arg_OPEN4.openhow.openflag4_u.how.
                                                   createhow4_u.createverf, NFS4_VERIFIER_SIZE))
                                {

                                    /* A former open EXCLUSIVE with same owner and verifier was found, resend it */
                                    res_OPEN4.OPEN4res_u.resok4.stateid.seqid =
                                        pstate_found_iterate->seqid;
                                    memcpy(res_OPEN4.OPEN4res_u.resok4.stateid.other,
                                           pstate_found_iterate->stateid_other, 12);

                                    memset(&(res_OPEN4.OPEN4res_u.resok4.cinfo.after), 0,
                                           sizeof(changeid4));
                                    res_OPEN4.OPEN4res_u.resok4.cinfo.after =
                                        (changeid4) pentry_parent->internal_md.mod_time;
                                    res_OPEN4.OPEN4res_u.resok4.cinfo.atomic = TRUE;

                                    /* No delegation */
                                    res_OPEN4.OPEN4res_u.resok4.delegation.delegation_type =
                                        OPEN_DELEGATE_NONE;
                                    res_OPEN4.OPEN4res_u.resok4.rflags =
                                        OPEN4_RESULT_LOCKTYPE_POSIX;

                                    /* Now produce the filehandle to this file */
                                    if((pnewfsal_handle =
                                                cache_inode_get_fsal_handle(pentry_lookup,
                                                                            &cache_status)) == NULL)
                                    {
                                        res_OPEN4.status = nfs4_Errno(cache_status);
                                        return res_OPEN4.status;
                                    }

                                    /* Allocation of a new file handle */
                                    if((rc = nfs4_AllocateFH(&newfh4)) != NFS4_OK)
                                    {
                                        res_OPEN4.status = rc;
                                        return res_OPEN4.status;
                                    }

                                    /* Building a new fh */
                                    if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
                                    {
                                        res_OPEN4.status = NFS4ERR_SERVERFAULT;
                                        return res_OPEN4.status;
                                    }

                                    /* This new fh replaces the current FH */
                                    data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
                                    memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val,
                                           newfh4.nfs_fh4_len);

                                    data->current_entry = pentry_lookup;
                                    data->current_filetype = REGULAR_FILE;

                                    /* regular exit */
                                    res_OPEN4.status = NFS4_OK;
                                    return res_OPEN4.status;
                                }

                            }
                            /* if( pstate_found_iterate != NULL ) */
                            pstate_previous_iterate = pstate_found_iterate;
                        }
                        while(pstate_found_iterate != NULL);
                    }
                }

                /* Managing GUARDED4 mode */
                if(cache_status != CACHE_INODE_SUCCESS)
                    res_OPEN4.status = nfs4_Errno(cache_status);
                else
                    res_OPEN4.status = NFS4ERR_EXIST;       /* File already exists */
                return res_OPEN4.status;
            }

            /*  if( cache_status != CACHE_INODE_NOT_FOUND ), if file already exists basically */
            LogFullDebug(COMPONENT_NFS_V4, "    OPEN open.how = %d\n", arg_OPEN4.openhow.openflag4_u.how.mode);

            create_arg.use_pnfs = FALSE;
#ifdef _USE_PNFS
            /*  set the file has "managed via pNFS" */
            if(data->pexport->options & EXPORT_OPTION_USE_PNFS)
                create_arg.use_pnfs = TRUE;
#endif                          /* _USE_PNFS */

            /* Create the file, if we reach this point, it does not exist, we can create it */
            if((pentry_newfile = cache_inode_create(pentry_parent,
                                                    &filename,
                                                    REGULAR_FILE,
                                                    mode,
                                                    &create_arg,
                                                    &attr_newfile,
                                                    data->ht,
                                                    data->pclient,
                                                    data->pcontext, &cache_status)) == NULL)
            {
                /* If the file already exists, this is not an error if open mode is UNCHECKED */
                if(cache_status != CACHE_INODE_ENTRY_EXISTS)
                {
                    res_OPEN4.status = nfs4_Errno(cache_status);
                    return res_OPEN4.status;
                }
                else
                {
                    /* If this point is reached, then the file already exists, cache_status == CACHE_INODE_ENTRY_EXISTS and pentry_newfile == NULL
                       This probably means EXCLUSIVE4 mode is used and verifier matches. pentry_newfile is then set to pentry_lookup */
                    pentry_newfile = pentry_lookup;
                }
            }

            /* Prepare state management structure */
            candidate_type = CACHE_INODE_STATE_SHARE;
            candidate_data.share.share_deny = arg_OPEN4.share_deny;
            candidate_data.share.share_access = arg_OPEN4.share_access;
            candidate_data.share.lockheld = 0;

            /* If file is opened under mode EXCLUSIVE4, open verifier should be kept to detect non vicious double open */
            if(arg_OPEN4.openhow.openflag4_u.how.mode == EXCLUSIVE4)
            {
                strncpy(candidate_data.share.oexcl_verifier,
                        arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createverf,
                        NFS4_VERIFIER_SIZE);
            }

            if(cache_inode_add_state(pentry_newfile,
                                     candidate_type,
                                     &candidate_data,
                                     powner,
                                     data->pclient,
                                     data->pcontext,
                                     &pfile_state, &cache_status) != CACHE_INODE_SUCCESS)
            {
                /* Seqid has to be incremented even in this case */
                P(powner->lock);
                powner->seqid += 1;
                V(powner->lock);

                res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                return res_OPEN4.status;
            }

            if(AttrProvided == TRUE)      /* Set the attribute if provided */
            {
                if((cache_status = cache_inode_setattr(pentry_newfile,
                                                       &sattr,
                                                       data->ht,
                                                       data->pclient,
                                                       data->pcontext,
                                                       &cache_status)) !=
                        CACHE_INODE_SUCCESS)
                {
                    res_OPEN4.status = nfs4_Errno(cache_status);
                    return res_OPEN4.status;
                }

            }

            /* Set the openflags variable */
            if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE)
                openflags |= FSAL_O_RDONLY;
            if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_READ)
                openflags |= FSAL_O_WRONLY;
            if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE)
                openflags = FSAL_O_RDWR;
            if(arg_OPEN4.share_access != 0)
                openflags = FSAL_O_RDWR;    /* @todo : BUGAZOMEU : Something better later */

            /* Open the file */
            if(cache_inode_open_by_name(pentry_parent,
                                        &filename,
                                        pentry_newfile,
                                        data->pclient,
                                        openflags,
                                        data->pcontext,
                                        &cache_status) != CACHE_INODE_SUCCESS)
            {
                /* Seqid has to be incremented even in this case */
                P(powner->lock);
                powner->seqid += 1;
                V(powner->lock);

                res_OPEN4.status = NFS4ERR_ACCESS;
                return res_OPEN4.status;
            }

            break;

        case OPEN4_NOCREATE:
            /* It was not a creation, but a regular open */
            /* The filehandle to the new file replaces the current filehandle */
            if(pentry_newfile == NULL)
            {
                if((pentry_newfile = cache_inode_lookup(pentry_parent,
                                                        &filename,
                                                        &attr_newfile,
                                                        data->ht,
                                                        data->pclient,
                                                        data->pcontext,
                                                        &cache_status)) == NULL)
                {
                    res_OPEN4.status = nfs4_Errno(cache_status);
                    return res_OPEN4.status;
                }
            }

            /* OPEN4 is to be done on a file */
            if(pentry_newfile->internal_md.type != REGULAR_FILE)
            {
                if(pentry_newfile->internal_md.type == DIR_BEGINNING
                        || pentry_newfile->internal_md.type == DIR_CONTINUE)
                {
                    res_OPEN4.status = NFS4ERR_ISDIR;
                    return res_OPEN4.status;
                }
                else if(pentry_newfile->internal_md.type == SYMBOLIC_LINK)
                {
                    res_OPEN4.status = NFS4ERR_SYMLINK;
                    return res_OPEN4.status;
                }
                else
                {
                    res_OPEN4.status = NFS4ERR_INVAL;
                    return res_OPEN4.status;
                }
            }

            /* If the file is opened for write, OPEN4 while deny share write access,
             * in this case, check caller has write access to the file */
            if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE)
            {
                if(cache_inode_access(pentry_newfile,
                                      FSAL_W_OK,
                                      data->ht,
                                      data->pclient,
                                      data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
                {
                    res_OPEN4.status = NFS4ERR_ACCESS;
                    return res_OPEN4.status;
                }
                openflags = FSAL_O_WRONLY;
            }

            /* Same check on read: check for readability of a file before opening it for read */
            if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_READ)
            {
                if(cache_inode_access(pentry_newfile,
                                      FSAL_R_OK,
                                      data->ht,
                                      data->pclient,
                                      data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
                {
                    res_OPEN4.status = NFS4ERR_ACCESS;
                    return res_OPEN4.status;
                }
                openflags = FSAL_O_RDONLY;
            }

            /* Same check on write */
            if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE)
            {
                if(cache_inode_access(pentry_newfile,
                                      FSAL_W_OK,
                                      data->ht,
                                      data->pclient,
                                      data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
                {
                    res_OPEN4.status = NFS4ERR_ACCESS;
                    return res_OPEN4.status;
                }
                openflags = FSAL_O_RDWR;
            }

            /* Try to find if the same open_owner already has acquired a stateid for this file */
            pstate_found_iterate = NULL;
            pstate_previous_iterate = NULL;
            do
            {
                cache_inode_state_iterate(pentry_newfile,
                                          &pstate_found_iterate,
                                          pstate_previous_iterate,
                                          data->pclient, data->pcontext, &cache_status);
                if(cache_status == CACHE_INODE_STATE_ERROR)
                    break;          /* Get out of the loop */

                if(cache_status == CACHE_INODE_INVALID_ARGUMENT)
                {
                    res_OPEN4.status = NFS4ERR_INVAL;
                    return res_OPEN4.status;
                }

                /* Check is open_owner is the same */
                if(pstate_found_iterate != NULL)
                {
                    if((pstate_found_iterate->state_type == CACHE_INODE_STATE_SHARE) &&
                            (pstate_found_iterate->powner->clientid == arg_OPEN4.owner.clientid)
                            &&
                            ((pstate_found_iterate->powner->owner_len ==
                              arg_OPEN4.owner.owner.owner_len)
                             &&
                             (!memcmp
                              (arg_OPEN4.owner.owner.owner_val,
                               pstate_found_iterate->powner->owner_val,
                               pstate_found_iterate->powner->owner_len))))
                    {
                        /* We'll be re-using the found state */
                        pstate_found_same_owner = pstate_found_iterate;
                    }
                    else
                    {

                        /* This is a different owner, check for possible conflicts */

                        if(memcmp(arg_OPEN4.owner.owner.owner_val,
                                  pstate_found_iterate->powner->owner_val,
                                  pstate_found_iterate->powner->owner_len))
                        {
                            switch (pstate_found_iterate->state_type)
                            {
                            case CACHE_INODE_STATE_SHARE:
                                if((pstate_found_iterate->state_data.share.
                                        share_access & OPEN4_SHARE_ACCESS_WRITE)
                                        && (arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE))
                                {
                                    res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                                    return res_OPEN4.status;
                                }

                                break;
                            }
                        }

                    }

                    /* In all cases opening in read access a read denied file or write access to a write denied file
                     * should fail, even if the owner is the same, see discussion in 14.2.16 and 8.9 */
                    if(pstate_found_iterate->state_type == CACHE_INODE_STATE_SHARE)
                    {
                        /* deny read access on read denied file */
                        if((pstate_found_iterate->state_data.share.
                                share_deny & OPEN4_SHARE_DENY_READ)
                                && (arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_READ))
                        {
                            /* Seqid has to be incremented even in this case */
                            P(powner->lock);
                            powner->seqid += 1;
                            V(powner->lock);

                            powner->seqid += 1;
                            res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                            return res_OPEN4.status;
                        }

                        /* deny write access on write denied file */
                        if((pstate_found_iterate->state_data.share.
                                share_deny & OPEN4_SHARE_DENY_WRITE)
                                && (arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE))
                        {
                            /* Seqid has to be incremented even in this case */
                            P(powner->lock);
                            powner->seqid += 1;
                            V(powner->lock);

                            res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                            return res_OPEN4.status;
                        }

                    }

                }
                /*  if( pstate_found_iterate != NULL ) */
                pstate_previous_iterate = pstate_found_iterate;
            }
            while(pstate_found_iterate != NULL);

            if(pstate_found_same_owner != NULL)
            {
                pfile_state = pstate_found_same_owner;
                pfile_state->seqid += 1;

                P(powner->lock);
                powner->seqid += 1;
                V(powner->lock);

            }
            else
            {
                /* Set the state for the related file */
                /* Prepare state management structure */
                candidate_type = CACHE_INODE_STATE_SHARE;
                candidate_data.share.share_deny = arg_OPEN4.share_deny;
                candidate_data.share.share_access = arg_OPEN4.share_access;

                if(cache_inode_add_state(pentry_newfile,
                                         candidate_type,
                                         &candidate_data,
                                         powner,
                                         data->pclient,
                                         data->pcontext,
                                         &pfile_state,
                                         &cache_status) != CACHE_INODE_SUCCESS)
                {
                    /* Seqid has to be incremented even in this case */
                    P(powner->lock);
                    powner->seqid += 1;
                    V(powner->lock);

                    res_OPEN4.status = NFS4ERR_SHARE_DENIED;
                    return res_OPEN4.status;
                }
            }

            /* Open the file */
            if(cache_inode_open_by_name(pentry_parent,
                                        &filename,
                                        pentry_newfile,
                                        data->pclient,
                                        openflags,
                                        data->pcontext,
                                        &cache_status) != CACHE_INODE_SUCCESS)
            {
                /* Seqid has to be incremented even in this case */
                P(powner->lock);
                powner->seqid += 1;
                V(powner->lock);

                res_OPEN4.status = NFS4ERR_ACCESS;
                return res_OPEN4.status;
            }
            break;

        default:
            /* Seqid has to be incremented even in this case */
            if(powner != NULL)
            {
                P(powner->lock);
                powner->seqid += 1;
                V(powner->lock);
            }

            res_OPEN4.status = NFS4ERR_INVAL;
            return res_OPEN4.status;
            break;
        }                       /* switch( arg_OPEN4.openhow.opentype ) */

        break;

    case CLAIM_PREVIOUS:
        break;

    default:
        /* Seqid has to be incremented even in this case */
        if(powner != NULL)
        {
            P(powner->lock);
            powner->seqid += 1;
            V(powner->lock);
        }

        res_OPEN4.status = NFS4ERR_INVAL;
        return res_OPEN4.status;
        break;
    }                           /*  switch(  arg_OPEN4.claim.claim ) */

    /* Now produce the filehandle to this file */
    if((pnewfsal_handle =
                cache_inode_get_fsal_handle(pentry_newfile, &cache_status)) == NULL)
    {
        res_OPEN4.status = nfs4_Errno(cache_status);
        return res_OPEN4.status;
    }

    /* Allocation of a new file handle */
    if((rc = nfs4_AllocateFH(&newfh4)) != NFS4_OK)
    {
        res_OPEN4.status = rc;
        return res_OPEN4.status;
    }

    /* Building a new fh */
    if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
    {
        res_OPEN4.status = NFS4ERR_SERVERFAULT;
        return res_OPEN4.status;
    }

    /* This new fh replaces the current FH */
    data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
    memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val, newfh4.nfs_fh4_len);

    data->current_entry = pentry_newfile;
    data->current_filetype = REGULAR_FILE;

    /* No do not need newfh any more */
    Mem_Free((char *)newfh4.nfs_fh4_val);

    /* Status of parent directory after the operation */
    if((cache_status = cache_inode_getattr(pentry_parent,
                                           &attr_parent,
                                           data->ht,
                                           data->pclient,
                                           data->pcontext,
                                           &cache_status)) != CACHE_INODE_SUCCESS)
    {
        res_OPEN4.status = nfs4_Errno(cache_status);
        return res_OPEN4.status;
    }

    res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 2;
    if((res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val =
                (uint32_t *) Mem_Alloc(res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len *
                                       sizeof(uint32_t))) == NULL)
    {
        res_OPEN4.status = NFS4ERR_SERVERFAULT;
        return res_OPEN4.status;
    }
    res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val[0] = 0;       /* No Attributes set */
    res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val[1] = 0;       /* No Attributes set */

    if(arg_OPEN4.openhow.opentype == OPEN4_CREATE)
    {
        tmp_int = 2;
        tmp_attr[0] = FATTR4_SIZE;
        tmp_attr[1] = FATTR4_MODE;
        nfs4_list_to_bitmap4(&(res_OPEN4.OPEN4res_u.resok4.attrset), &tmp_int, tmp_attr);
        res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 2;
    }

    res_OPEN4.OPEN4res_u.resok4.cinfo.after =
        (changeid4) pentry_parent->internal_md.mod_time;
    res_OPEN4.OPEN4res_u.resok4.cinfo.atomic = TRUE;

    res_OPEN4.OPEN4res_u.resok4.stateid.seqid = powner->seqid;
    memcpy(res_OPEN4.OPEN4res_u.resok4.stateid.other, pfile_state->stateid_other, 12);

    /* No delegation */
    res_OPEN4.OPEN4res_u.resok4.delegation.delegation_type = OPEN_DELEGATE_NONE;

    res_OPEN4.OPEN4res_u.resok4.rflags = OPEN4_RESULT_LOCKTYPE_POSIX;

    /* regular exit */
    res_OPEN4.status = NFS4_OK;
    return res_OPEN4.status;
}                               /* nfs41_op_open */
Ejemplo n.º 15
0
int nfs41_op_close(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_close";
  cache_inode_state_t *pstate_found = NULL;

  cache_inode_status_t cache_status;

  memset(&res_CLOSE4, 0, sizeof(res_CLOSE4));
  resp->resop = NFS4_OP_CLOSE;

  /* If the filehandle is Empty */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_CLOSE4.status = NFS4ERR_NOFILEHANDLE;
      return res_CLOSE4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_CLOSE4.status = NFS4ERR_BADHANDLE;
      return res_CLOSE4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_CLOSE4.status = NFS4ERR_FHEXPIRED;
      return res_CLOSE4.status;
    }

  if(data->current_entry == NULL)
    {
      res_CLOSE4.status = NFS4ERR_SERVERFAULT;
      return res_CLOSE4.status;
    }

  /* Should not operate on directories */
  if(data->current_entry->internal_md.type == DIR_BEGINNING ||
     data->current_entry->internal_md.type == DIR_CONTINUE)
    {
      res_CLOSE4.status = NFS4ERR_ISDIR;
      return res_CLOSE4.status;
    }

  /* Object should be a file */
  if(data->current_entry->internal_md.type != REGULAR_FILE)
    {
      res_CLOSE4.status = NFS4ERR_INVAL;
      return res_CLOSE4.status;
    }

  /* Get the related state */
  if(cache_inode_get_state(arg_CLOSE4.open_stateid.other,
                           &pstate_found,
                           data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      if(cache_status == CACHE_INODE_NOT_FOUND)
        res_CLOSE4.status = NFS4ERR_BAD_STATEID;
      else
        res_CLOSE4.status = NFS4ERR_INVAL;

      return res_CLOSE4.status;
    }

#ifdef _TOTO
  /* Check is held locks remain */
  if(pstate_found->state_data.share.lockheld > 0)
    {
      res_CLOSE4.status = NFS4ERR_LOCKS_HELD;
      return res_CLOSE4.status;
    }
#endif

  /* Update the seqid for the open_owner */
  P(pstate_found->powner->lock);
  pstate_found->powner->seqid += 1;
  V(pstate_found->powner->lock);

  /* Prepare the result */
  res_CLOSE4.CLOSE4res_u.open_stateid.seqid = pstate_found->seqid + 1;

  /* Close the file in FSAL through the cache inode */
  P_w(&data->current_entry->lock);
  if(cache_inode_close(data->current_entry,
                       data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      V_w(&data->current_entry->lock);

      res_CLOSE4.status = nfs4_Errno(cache_status);
      return res_CLOSE4.status;
    }
  V_w(&data->current_entry->lock);

  /* File is closed, release the corresponding state */
  if(cache_inode_del_state_by_key(arg_CLOSE4.open_stateid.other,
                                  data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_CLOSE4.status = nfs4_Errno(cache_status);
      return res_CLOSE4.status;
    }

  memcpy(res_CLOSE4.CLOSE4res_u.open_stateid.other, arg_CLOSE4.open_stateid.other, 12);;

  res_CLOSE4.status = NFS4_OK;

  return NFS4_OK;
}                               /* nfs41_op_close */
Ejemplo n.º 16
0
int nfs4_op_verify(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  fsal_attrib_list_t file_attr;
  cache_inode_status_t cache_status;
  fattr4 file_attr4;
  int rc = 0;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_verify";

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

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_VERIFY4.status = NFS4ERR_NOFILEHANDLE;
      return NFS4ERR_NOFILEHANDLE;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_VERIFY4.status = NFS4ERR_BADHANDLE;
      return NFS4ERR_BADHANDLE;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_VERIFY4.status = NFS4ERR_FHEXPIRED;
      return NFS4ERR_FHEXPIRED;
    }

  /* 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->ht,
                                         data->pclient,
                                         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;
    }

  return res_VERIFY4.status;
}                               /* nfs4_op_verify */
Ejemplo n.º 17
0
int nfs4_op_locku(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
#ifndef _WITH_NFSV4_LOCKS
  resp->resop = NFS4_OP_LOCKU;
  res_LOCKU4.status = NFS4ERR_LOCK_NOTSUPP;
  return res_LOCKU4.status;
#else

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_locku";
  state_status_t      state_status;
  state_t           * pstate_found = NULL;
  state_owner_t     * plock_owner;
  state_lock_desc_t   lock_desc;
  unsigned int        rc = 0;
  const char        * tag = "LOCKU";

  LogDebug(COMPONENT_NFS_V4_LOCK,
           "Entering NFS v4 LOCKU handler -----------------------------------------------------");

  /* Initialize to sane default */
  resp->resop = NFS4_OP_LOCKU;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LOCKU4.status = NFS4ERR_NOFILEHANDLE;
      return res_LOCKU4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LOCKU4.status = NFS4ERR_BADHANDLE;
      return res_LOCKU4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LOCKU4.status = NFS4ERR_FHEXPIRED;
      return res_LOCKU4.status;
    }

  /* LOCKU is done only on a file */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* Type of the entry is not correct */
      switch (data->current_filetype)
        {
        case DIRECTORY:
          res_LOCKU4.status = NFS4ERR_ISDIR;
          return res_LOCKU4.status;

        default:
          res_LOCKU4.status = NFS4ERR_INVAL;
          return res_LOCKU4.status;
        }
    }

  /* Convert lock parameters to internal types */
  switch(arg_LOCKU4.locktype)
    {
      case READ_LT:
      case READW_LT:
        lock_desc.sld_type = STATE_LOCK_R;
        break;

      case WRITE_LT:
      case WRITEW_LT:
        lock_desc.sld_type = STATE_LOCK_W;
        break;
    }

  lock_desc.sld_offset = arg_LOCKU4.offset;

  if(arg_LOCKU4.length != STATE_LOCK_OFFSET_EOF)
    lock_desc.sld_length = arg_LOCKU4.length;
  else
    lock_desc.sld_length = 0;

  /* Check stateid correctness and get pointer to state */
  if((rc = nfs4_Check_Stateid(&arg_LOCKU4.lock_stateid,
                              data->current_entry,
                              0LL,
                              &pstate_found,
                              data,
                              STATEID_SPECIAL_FOR_LOCK,
                              tag)) != NFS4_OK)
    {
      res_LOCKU4.status = rc;
      return res_LOCKU4.status;
    }

  plock_owner = pstate_found->state_powner;

  /* Check seqid (lock_seqid or open_seqid) */
  if(!Check_nfs4_seqid(plock_owner,
                       arg_LOCKU4.seqid,
                       op,
                       data,
                       resp,
                       tag))
    {
      /* Response is all setup for us and LogDebug told what was wrong */
      return res_LOCKU4.status;
    }

  /* Lock length should not be 0 */
  if(arg_LOCKU4.length == 0LL)
    {
      res_LOCKU4.status = NFS4ERR_INVAL;

      /* Save the response in the lock owner */
      Copy_nfs4_state_req(plock_owner, arg_LOCKU4.seqid, op, data, resp, tag);

      return res_LOCKU4.status;
    }

  /* Check for range overflow
   * Remember that a length with all bits set to 1 means "lock until the end of file" (RFC3530, page 157) */
  if(lock_desc.sld_length > (STATE_LOCK_OFFSET_EOF - lock_desc.sld_offset))
    {
      res_LOCKU4.status = NFS4ERR_INVAL;

      /* Save the response in the lock owner */
      Copy_nfs4_state_req(plock_owner, arg_LOCKU4.seqid, op, data, resp, tag);

      return res_LOCKU4.status;
    }

  LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG,
          tag,
          data->current_entry,
          data->pcontext,
          plock_owner,
          &lock_desc);

  /* Now we have a lock owner and a stateid.
   * Go ahead and push unlock into SAL (and FSAL).
   */
  if(state_unlock(data->current_entry,
                  data->pcontext,
                  plock_owner,
                  pstate_found,
                  &lock_desc,
                  data->pclient,
                  &state_status) != STATE_SUCCESS)
    {
      res_LOCKU4.status = nfs4_Errno_state(state_status);

      /* Save the response in the lock owner */
      Copy_nfs4_state_req(plock_owner, arg_LOCKU4.seqid, op, data, resp, tag);

      return res_LOCKU4.status;
    }

  /* Successful exit */
  res_LOCKU4.status = NFS4_OK;

  /* Handle stateid/seqid for success */
  update_stateid(pstate_found,
                 &res_LOCKU4.LOCKU4res_u.lock_stateid,
                 data,
                 tag);

  /* Save the response in the lock owner */
  Copy_nfs4_state_req(plock_owner, arg_LOCKU4.seqid, op, data, resp, tag);

  return res_LOCKU4.status;
#endif
}                               /* nfs4_op_locku */
Ejemplo n.º 18
0
int nfs4_op_lookupp(struct nfs_argop4 *op,
                    compound_data_t * data, struct nfs_resop4 *resp)
{
  fsal_name_t name;
  cache_entry_t *dir_pentry = NULL;
  cache_entry_t *file_pentry = NULL;
  fsal_attrib_list_t attrlookup;
  cache_inode_status_t cache_status;
  int error = 0;
  fsal_handle_t *pfsal_handle = NULL;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_lookupp";

  resp->resop = NFS4_OP_LOOKUPP;
  resp->nfs_resop4_u.oplookupp.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LOOKUPP4.status = NFS4ERR_NOFILEHANDLE;
      return res_LOOKUPP4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LOOKUPP4.status = NFS4ERR_BADHANDLE;
      return res_LOOKUPP4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LOOKUPP4.status = NFS4ERR_FHEXPIRED;
      return res_LOOKUPP4.status;
    }

  /* looking up for parent directory from ROOTFH return NFS4ERR_NOENT (RFC3530, page 166) */
  if(data->currentFH.nfs_fh4_len == data->rootFH.nfs_fh4_len
     && memcmp(data->currentFH.nfs_fh4_val, data->rootFH.nfs_fh4_val,
               data->currentFH.nfs_fh4_len) == 0)
    {
      /* Nothing to do, just reply with success */
      res_LOOKUPP4.status = NFS4ERR_NOENT;
      return res_LOOKUPP4.status;
    }

  /* If in pseudoFS, proceed with pseudoFS specific functions */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    return nfs4_op_lookupp_pseudo(op, data, resp);

  /* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
  if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
    return nfs4_op_lookupp_xattr(op, data, resp);

  /* If data->exportp is null, a junction from pseudo fs was traversed, credp and exportp have to be updated */
  if(data->pexport == NULL)
    {
      if((error = nfs4_SetCompoundExport(data)) != NFS4_OK)
        {
          res_LOOKUPP4.status = error;
          return res_LOOKUPP4.status;
        }
    }

  /* Preparying for cache_inode_lookup ".." */
  file_pentry = NULL;
  dir_pentry = data->current_entry;
  name = FSAL_DOT_DOT;

  /* BUGAZOMEU: Faire la gestion des cross junction traverse */
  if((file_pentry = cache_inode_lookup(dir_pentry,
                                       &name,
                                       data->pexport->cache_inode_policy,
                                       &attrlookup,
                                       data->ht,
                                       data->pclient,
                                       data->pcontext, &cache_status)) != NULL)
    {
      /* Extract the fsal attributes from the cache inode pentry */
      pfsal_handle = cache_inode_get_fsal_handle(file_pentry, &cache_status);
      if(cache_status != CACHE_INODE_SUCCESS)
        {
          res_LOOKUPP4.status = NFS4ERR_SERVERFAULT;
          return res_LOOKUPP4.status;
        }

      /* Convert it to a file handle */
      if(!nfs4_FSALToFhandle(&data->currentFH, pfsal_handle, data))
        {
          res_LOOKUPP4.status = NFS4ERR_SERVERFAULT;
          return res_LOOKUPP4.status;
        }

      /* Copy this to the mounted on FH (if no junction is traversed */
      memcpy((char *)(data->mounted_on_FH.nfs_fh4_val),
             (char *)(data->currentFH.nfs_fh4_val), data->currentFH.nfs_fh4_len);
      data->mounted_on_FH.nfs_fh4_len = data->currentFH.nfs_fh4_len;

      /* Keep the pointer within the compound data */
      data->current_entry = file_pentry;
      data->current_filetype = file_pentry->internal_md.type;

      /* Return successfully */
      res_LOOKUPP4.status = NFS4_OK;
      return NFS4_OK;

    }

  /* If the part of the code is reached, then something wrong occured in the lookup process, status is not HPSS_E_NOERROR 
   * and contains the code for the error */

  /* If NFS4ERR_SYMLINK should be returned for a symlink instead of ENOTDIR */
  if((cache_status == CACHE_INODE_NOT_A_DIRECTORY) &&
     (dir_pentry->internal_md.type == SYMBOLIC_LINK))
    res_LOOKUPP4.status = NFS4ERR_SYMLINK;
  else
    res_LOOKUPP4.status = nfs4_Errno(cache_status);

  return res_LOOKUPP4.status;
}                               /* nfs4_op_lookupp */
Ejemplo n.º 19
0
int nfs4_op_readlink(struct nfs_argop4 *op,
                     compound_data_t * data, struct nfs_resop4 *resp)
{
  cache_inode_status_t cache_status;
  fsal_path_t symlink_path;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_readlink";

  resp->resop = NFS4_OP_READLINK;
  res_READLINK4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_READLINK4.status = NFS4ERR_NOFILEHANDLE;
      return NFS4ERR_NOFILEHANDLE;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_READLINK4.status = NFS4ERR_BADHANDLE;
      return NFS4ERR_BADHANDLE;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_READLINK4.status = NFS4ERR_FHEXPIRED;
      return NFS4ERR_FHEXPIRED;
    }

  /* You can readlink only on a link ... */
  if(data->current_filetype != SYMBOLIC_LINK)
    {
      /* As said on page 194 of RFC3530, return NFS4ERR_INVAL in this case */
      res_READLINK4.status = NFS4ERR_INVAL;
      return res_READLINK4.status;
    }

  /* Using cache_inode_readlink */
  if(cache_inode_readlink(data->current_entry,
                          &symlink_path,
                          data->ht,
                          data->pclient,
                          data->pcontext, &cache_status) == CACHE_INODE_SUCCESS)
    {
      /* Alloc read link */

      if((res_READLINK4.READLINK4res_u.resok4.link.utf8string_val =
          (char *)Mem_Alloc_Label(symlink_path.len, "nfs4_op_readlink")) == NULL)
        {
          res_READLINK4.status = NFS4ERR_INVAL;
          return res_READLINK4.status;
        }

      /* convert the fsal path to a utf8 string */
      if(str2utf8((char *)symlink_path.path, &res_READLINK4.READLINK4res_u.resok4.link)
         == -1)
        {
          res_READLINK4.status = NFS4ERR_INVAL;
          return res_READLINK4.status;
        }

      res_READLINK4.status = NFS4_OK;
      return res_READLINK4.status;
    }

  res_READLINK4.status = nfs4_Errno(cache_status);
  return res_READLINK4.status;
}                               /* nfs4_op_readlink */
Ejemplo n.º 20
0
/**
 * nfs4_op_readdir: The NFS4_OP_READDIR.
 * 
 * Implements the NFS4_OP_READDIR. If fh is a pseudo FH, then call is routed to routine nfs4_op_readdir_pseudo
 *
 * @param op    [IN]    pointer to nfs4_op arguments
 * @param data  [INOUT] Pointer to the compound request's data
 * @param resp  [IN]    Pointer to nfs4_op results
 * 
 * @return NFS4_OK if ok, any other value show an error.
 *
 */
int nfs4_op_readdir(struct nfs_argop4 *op,
                    compound_data_t * data, struct nfs_resop4 *resp)
{
  cache_entry_t *dir_pentry = NULL;
  cache_entry_t *pentry = NULL;

  cache_inode_endofdir_t eod_met;
  fsal_attrib_list_t attrlookup;
  cache_inode_status_t cache_status;
  cache_inode_status_t cache_status_attr;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_readdir";

  unsigned long dircount;
  unsigned long maxcount;
  entry4 *entry_nfs_array;
  cache_inode_dir_entry_t *dirent_array;
  verifier4 cookie_verifier;
  unsigned int cookie = 0;
  unsigned int end_cookie = 0;
  unsigned int *cookie_array;
  fsal_handle_t *entry_FSALhandle;
  nfs_fh4 entryFH;
  char val_fh[NFS4_FHSIZE];
  entry_name_array_item_t *entry_name_array;
  unsigned long space_used;
  unsigned int estimated_num_entries;
  unsigned int num_entries;

  unsigned int i = 0;

  bitmap4 RdAttrErrorBitmap;
  attrlist4 RdAttrErrorVals;

  resp->resop = NFS4_OP_READDIR;
  res_READDIR4.status = NFS4_OK;

  entryFH.nfs_fh4_len = 0;
  entryFH.nfs_fh4_val = val_fh;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_READDIR4.status = NFS4ERR_NOFILEHANDLE;
      return res_READDIR4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_READDIR4.status = NFS4ERR_BADHANDLE;
      return res_READDIR4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_READDIR4.status = NFS4ERR_FHEXPIRED;
      return res_READDIR4.status;
    }

  /* Pseudo Fs management */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    return nfs4_op_readdir_pseudo(op, data, resp);

  /* Xattrs management */
  if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
    return nfs4_op_readdir_xattr(op, data, resp);

  /* You can readdir only within a directory */
  dir_pentry = data->current_entry;
  if(data->current_filetype != DIR_BEGINNING && data->current_filetype != DIR_CONTINUE)
    {
      res_READDIR4.status = NFS4ERR_NOTDIR;
      return res_READDIR4.status;
    }

  /* get the caracteristic value for readdir operation */
  dircount = arg_READDIR4.dircount;
  maxcount = arg_READDIR4.maxcount;
  cookie = (unsigned int)arg_READDIR4.cookie;
  space_used = sizeof(entry4);

  /* dircount is considered meaningless by many nfsv4 client (like the CITI one). we use maxcount instead */
  estimated_num_entries = maxcount / sizeof(entry4);    /* Estimated_num_entries is probably far too big */

  LogFullDebug(COMPONENT_NFS_V4,
      "--- nfs4_op_readdir ---> dircount=%u maxcount=%u arg_cookie=%llu cookie=%d estimated_num_entries=%u\n",
       dircount, maxcount, arg_READDIR4.cookie, cookie, estimated_num_entries);

  /* Do not use a cookie of 1 or 2 (reserved values) */
  if(cookie == 1 || cookie == 2)
    {
      res_READDIR4.status = NFS4ERR_BAD_COOKIE;
      return res_READDIR4.status;
    }

  if(cookie != 0)
    cookie = cookie - 2;        /* 0,1 and 2 are reserved, there is a delta of '3' because of this */

  /* Get only attributes that are allowed to be read */
  if(!nfs4_Fattr_Check_Access_Bitmap(&arg_READDIR4.attr_request, FATTR4_ATTR_READ))
    {
      res_READDIR4.status = NFS4ERR_INVAL;
      return res_READDIR4.status;
    }

  /* If maxcount is too short, return NFS4ERR_TOOSMALL */
  if(maxcount < sizeof(entry4) || estimated_num_entries == 0)
    {
      res_READDIR4.status = NFS4ERR_TOOSMALL;
      return res_READDIR4.status;
    }

  /*
   * If cookie verifier is used, then an non-trivial value is
   * returned to the client         This value is the mtime of
   * the pentry. If verifier is unused (as in many NFS
   * Servers) then only a set of zeros is returned (trivial
   * value) 
   */
  memset(cookie_verifier, 0, NFS4_VERIFIER_SIZE);
  if(data->pexport->UseCookieVerifier == 1)
    memcpy(cookie_verifier, &dir_pentry->internal_md.mod_time, sizeof(time_t));

  /* Cookie delivered by the server and used by the client SHOULD not ne 0, 1 or 2 (cf RFC3530, page192)
   * because theses value are reserved for special use.
   *      0 - cookie for first READDIR
   *      1 - reserved for . on client handside
   *      2 - reserved for .. on client handside
   * Entries '.' and '..' are not returned also
   * For these reason, there will be an offset of 3 between NFS4 cookie and HPSS cookie */

  if((cookie != 0) && (data->pexport->UseCookieVerifier == 1))
    {
      if(memcmp(cookie_verifier, arg_READDIR4.cookieverf, NFS4_VERIFIER_SIZE) != 0)
        {

          res_READDIR4.status = NFS4ERR_BAD_COOKIE;
          return res_READDIR4.status;
        }
    }

  /* The default behaviour is to consider that eof is not reached, the returned values by cache_inode_readdir 
   * will let us know if eod was reached or not */
  res_READDIR4.READDIR4res_u.resok4.reply.eof = FALSE;

  /* Get prepared for readdir */
  if((dirent_array =
      (cache_inode_dir_entry_t *) Mem_Alloc(estimated_num_entries *
                                            sizeof(cache_inode_dir_entry_t))) == NULL)
    {
      res_READDIR4.status = NFS4ERR_SERVERFAULT;
      return res_READDIR4.status;
    }

  if((cookie_array =
      (unsigned int *)Mem_Alloc(estimated_num_entries * sizeof(unsigned int))) == NULL)
    {
      Mem_Free((char *)dirent_array);

      res_READDIR4.status = NFS4ERR_SERVERFAULT;
      return res_READDIR4.status;
    }

  /* Perform the readdir operation */
  if(cache_inode_readdir(dir_pentry,
                         cookie,
                         estimated_num_entries,
                         &num_entries,
                         &end_cookie,
                         &eod_met,
                         dirent_array,
                         cookie_array,
                         data->ht,
                         data->pclient,
                         data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_READDIR4.status = nfs4_Errno(cache_status);
      return res_READDIR4.status;
    }

  /* For an empty directory, we will find only . and .., so reply af if the end if reached */
  if(num_entries == 0)
    {
      /* only . and .. */
      res_READDIR4.READDIR4res_u.resok4.reply.entries = NULL;
      res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
      memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
             NFS4_VERIFIER_SIZE);
    }
  else
    {
      /* Allocation of reply structures */
      if((entry_name_array =
          (entry_name_array_item_t *) Mem_Alloc(num_entries *
                                                (FSAL_MAX_NAME_LEN + 1))) == NULL)
        {
          LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
          res_READDIR4.status = NFS4ERR_SERVERFAULT;
          return res_READDIR4.status;
        }
      memset((char *)entry_name_array, 0, num_entries * (FSAL_MAX_NAME_LEN + 1));

      if((entry_nfs_array = (entry4 *) Mem_Alloc(num_entries * sizeof(entry4))) == NULL)
        {
          LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
          res_READDIR4.status = NFS4ERR_SERVERFAULT;
          return res_READDIR4.status;
        }

      for(i = 0; i < num_entries; i++)
        {
          entry_nfs_array[i].name.utf8string_val = entry_name_array[i];

          if(str2utf8(dirent_array[i].name.name, &entry_nfs_array[i].name) == -1)
            {
              res_READDIR4.status = NFS4ERR_SERVERFAULT;
              return res_READDIR4.status;
            }

          /* Set the cookie value */
          if(i != num_entries - 1)
            entry_nfs_array[i].cookie = cookie_array[i + 1] + 2;        /* 0, 1 and 2 are reserved */
          else
            entry_nfs_array[i].cookie = end_cookie + 2;

          LogFullDebug(COMPONENT_NFS_V4, " === nfs4_op_readdir ===>   i=%d name=%s cookie=%llu\n",
                 i, dirent_array[i].name.name, entry_nfs_array[i].cookie);

          /* Get the pentry for the object's attributes and filehandle */
          if((pentry = cache_inode_lookup(dir_pentry,
                                          &dirent_array[i].name,
                                          &attrlookup,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
            {
              Mem_Free((char *)entry_nfs_array);
              Mem_Free((char *)dirent_array);
              Mem_Free((char *)cookie_array);
              /* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
              entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
              entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
              res_READDIR4.status = NFS4ERR_SERVERFAULT;
              return res_READDIR4.status;
            }

          /* If file handle is asked in the attributes, provide it */
          if(arg_READDIR4.attr_request.bitmap4_val != NULL
             && (arg_READDIR4.attr_request.bitmap4_val[0] & FATTR4_FILEHANDLE))
            {
              if((entry_FSALhandle =
                  cache_inode_get_fsal_handle(pentry, &cache_status_attr)) == NULL)
                {
                  /* Faulty Handle or pentry */
                  Mem_Free((char *)entry_nfs_array);
                  Mem_Free((char *)dirent_array);
                  Mem_Free((char *)cookie_array);
                  res_READDIR4.status = NFS4ERR_SERVERFAULT;
                  return res_READDIR4.status;
                }

              if(!nfs4_FSALToFhandle(&entryFH, entry_FSALhandle, data))
                {
                  /* Faulty type */
                  Mem_Free((char *)entry_nfs_array);
                  Mem_Free((char *)dirent_array);
                  Mem_Free((char *)cookie_array);
                  res_READDIR4.status = NFS4ERR_SERVERFAULT;
                  return res_READDIR4.status;
                }
            }

          if(nfs4_FSALattr_To_Fattr(data->pexport,
                                    &attrlookup,
                                    &(entry_nfs_array[i].attrs),
                                    data, &entryFH, &(arg_READDIR4.attr_request)) != 0)
            {
              /* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
              entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
              entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
            }

          /* Chain the entries together */
          entry_nfs_array[i].nextentry = NULL;
          if(i != 0)
            entry_nfs_array[i - 1].nextentry = &(entry_nfs_array[i]);

          /* This test is there to avoid going further than the buffer provided by the client 
           * the factor "9/10" is there for safety. Its value could be change as beta tests will be done */
          if((caddr_t)
             ((caddr_t) (&entry_nfs_array[i]) - (caddr_t) (&entry_nfs_array[0])) >
             (caddr_t) (maxcount * 9 / 10))
            break;
        }                       /* for i */

      if((eod_met == END_OF_DIR) && (i == num_entries))
        {
          /* This is the end of the directory */
          res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
          memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
                 NFS4_VERIFIER_SIZE);
        }

      /* Put the entry's list in the READDIR reply */
      res_READDIR4.READDIR4res_u.resok4.reply.entries = entry_nfs_array;
    }

  /* Do not forget to set the verifier */
  memcpy((char *)res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
         NFS4_VERIFIER_SIZE);

  Mem_Free((char *)dirent_array);
  Mem_Free((char *)cookie_array);
  res_READDIR4.status = NFS4_OK;

  return res_READDIR4.status;
}                               /* nfs4_op_readdir */
Ejemplo n.º 21
0
/**
 * nfs4_op_readdir: The NFS4_OP_READDIR.
 * 
 * Implements the NFS4_OP_READDIR. If fh is a pseudo FH, then call is routed to routine nfs4_op_readdir_pseudo
 *
 * @param op    [IN]    pointer to nfs4_op arguments
 * @param data  [INOUT] Pointer to the compound request's data
 * @param resp  [IN]    Pointer to nfs4_op results
 * 
 * @return NFS4_OK if ok, any other value show an error.
 *
 */
int nfs4_op_readdir(struct nfs_argop4 *op,
                    compound_data_t * data, struct nfs_resop4 *resp)
{
  cache_entry_t *dir_pentry = NULL;
  cache_entry_t *pentry = NULL;

  cache_inode_endofdir_t eod_met;
  fsal_attrib_list_t attrlookup;
  cache_inode_status_t cache_status;
  cache_inode_status_t cache_status_attr;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_readdir";

  unsigned long dircount;
  unsigned long maxcount;
  entry4 *entry_nfs_array;
  cache_inode_dir_entry_t **dirent_array = NULL;
  verifier4 cookie_verifier;
  uint64_t cookie = 0;
  uint64_t end_cookie = 0;
  fsal_handle_t *entry_FSALhandle;
  nfs_fh4 entryFH;
  char val_fh[NFS4_FHSIZE];
  entry_name_array_item_t *entry_name_array = NULL;
  unsigned int estimated_num_entries;
  unsigned int num_entries;
  int dir_pentry_unlock = FALSE;

  unsigned int i = 0;
  unsigned int outbuffsize = 0 ;
  unsigned int entrysize = 0 ;
 
  bitmap4 RdAttrErrorBitmap = { 1, (uint32_t *) "\0\0\0\b" };   /* 0xB = 11 = FATTR4_RDATTR_ERROR */
  attrlist4 RdAttrErrorVals = { 0, NULL };      /* Nothing to be seen here */

  resp->resop = NFS4_OP_READDIR;
  res_READDIR4.status = NFS4_OK;

  entryFH.nfs_fh4_len = 0;
  entryFH.nfs_fh4_val = val_fh;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_READDIR4.status = NFS4ERR_NOFILEHANDLE;
      return res_READDIR4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_READDIR4.status = NFS4ERR_BADHANDLE;
      return res_READDIR4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_READDIR4.status = NFS4ERR_FHEXPIRED;
      return res_READDIR4.status;
    }

  /* Pseudo Fs management */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    return nfs4_op_readdir_pseudo(op, data, resp);

  /* Xattrs management */
  if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
    return nfs4_op_readdir_xattr(op, data, resp);

  /* You can readdir only within a directory */
  dir_pentry = data->current_entry;
  if(data->current_filetype != DIRECTORY)
    {
      res_READDIR4.status = NFS4ERR_NOTDIR;
      return res_READDIR4.status;
    }

  /* get the characteristic value for readdir operation */
  dircount = arg_READDIR4.dircount;
  maxcount = arg_READDIR4.maxcount*0.9;
  cookie = (unsigned int)arg_READDIR4.cookie;

  /* dircount is considered meaningless by many nfsv4 client (like the CITI
   * one).  we use maxcount instead. */

  /* the Linux 3.0, 3.1.0 clients vs. TCP Ganesha comes out 10x slower
   * with 500 max entries */
#if 0
  /* takes 2s to return 2999 entries */
  estimated_num_entries = maxcount / sizeof(entry4);
#else
  /* takes 20s to return 2999 entries */
  estimated_num_entries = 50;
#endif

  LogFullDebug(COMPONENT_NFS_V4,
               "--- nfs4_op_readdir ---> dircount=%lu maxcount=%lu arg_cookie=%"
               PRIu64" cookie=%"PRIu64" estimated_num_entries=%u",
               dircount, maxcount, arg_READDIR4.cookie, cookie,
               estimated_num_entries);

  /* Do not use a cookie of 1 or 2 (reserved values) */
  if(cookie == 1 || cookie == 2)
    {
      res_READDIR4.status = NFS4ERR_BAD_COOKIE;
      return res_READDIR4.status;
    }

  /* Get only attributes that are allowed to be read */
  if(!nfs4_Fattr_Check_Access_Bitmap(&arg_READDIR4.attr_request,
                                     FATTR4_ATTR_READ))
    {
      res_READDIR4.status = NFS4ERR_INVAL;
      return res_READDIR4.status;
    }

  /* If maxcount is too short, return NFS4ERR_TOOSMALL */
  if(maxcount < sizeof(entry4) || estimated_num_entries == 0)
    {
      res_READDIR4.status = NFS4ERR_TOOSMALL;
      return res_READDIR4.status;
    }

  /*

   * If cookie verifier is used, then an non-trivial value is
   * returned to the client         This value is the mtime of
   * the pentry. If verifier is unused (as in many NFS
   * Servers) then only a set of zeros is returned (trivial
   * value) 
   */
  memset(cookie_verifier, 0, NFS4_VERIFIER_SIZE);
  if(data->pexport->UseCookieVerifier == 1)
    memcpy(cookie_verifier, &dir_pentry->internal_md.mod_time, sizeof(time_t));

  /* Cookie delivered by the server and used by the client SHOULD not ne 0, 1 or 2 (cf RFC3530, page192)
   * because theses value are reserved for special use.
   *      0 - cookie for first READDIR
   *      1 - reserved for . on client handside
   *      2 - reserved for .. on client handside
   * Entries '.' and '..' are not returned also
   * For these reason, there will be an offset of 3 between NFS4 cookie and
   * HPSS cookie */

  if((cookie != 0) && (data->pexport->UseCookieVerifier == 1))
    {
      if(memcmp(cookie_verifier, arg_READDIR4.cookieverf, NFS4_VERIFIER_SIZE) != 0)
        {

          res_READDIR4.status = NFS4ERR_BAD_COOKIE;
          return res_READDIR4.status;
        }
    }

  /* The default behaviour is to consider that eof is not reached, the
   * returned values by cache_inode_readdir will let us know if eod was
   * reached or not */
  res_READDIR4.READDIR4res_u.resok4.reply.eof = FALSE;

  /* Get prepared for readdir */
  if((dirent_array =
      (cache_inode_dir_entry_t **) Mem_Alloc(
          estimated_num_entries * sizeof(cache_inode_dir_entry_t*))) == NULL)
    {
      res_READDIR4.status = NFS4ERR_SERVERFAULT;
      goto out;
    }
  
  /* Perform the readdir operation */
  if(cache_inode_readdir(dir_pentry,
                         data->pexport->cache_inode_policy,
                         cookie,
                         estimated_num_entries,
                         &num_entries,
                         &end_cookie,
                         &eod_met,
                         dirent_array,
                         data->ht,
                         &dir_pentry_unlock,
                         data->pclient,
                         data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_READDIR4.status = nfs4_Errno(cache_status);
      goto out;
    }

  /* For an empty directory, we will find only . and .., so reply as if the
   * end is reached */
  if(num_entries == 0)
    {
      /* only . and .. */
      res_READDIR4.READDIR4res_u.resok4.reply.entries = NULL;
      res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
      memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
             NFS4_VERIFIER_SIZE);
    }
  else
    {
      /* Start computing the outbuffsize */
      outbuffsize = sizeof( bool_t) /* eof */ 
                  + sizeof( nfsstat4 ) /* READDIR4res::status */
                  + NFS4_VERIFIER_SIZE /* cookie verifier */ ;

      /* Allocation of reply structures */
      if((entry_name_array =
          (entry_name_array_item_t *) Mem_Alloc(num_entries *
                                                (FSAL_MAX_NAME_LEN + 1)))
         == NULL)
        {
          LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
          res_READDIR4.status = NFS4ERR_SERVERFAULT;
          return res_READDIR4.status;
        }
      memset((char *)entry_name_array, 0,
             num_entries * (FSAL_MAX_NAME_LEN + 1));

      if((entry_nfs_array = (entry4 *) Mem_Alloc(num_entries * sizeof(entry4))) 
         == NULL)
        {
          LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
          res_READDIR4.status = NFS4ERR_SERVERFAULT;
          return res_READDIR4.status;
        }
      memset((char *)entry_nfs_array, 0, num_entries * sizeof(entry4));

      for(i = 0; i < num_entries; i++) 
        {
          entry_nfs_array[i].name.utf8string_val = entry_name_array[i];

          if(str2utf8(dirent_array[i]->name.name,
                      &entry_nfs_array[i].name) == -1)
            {
              res_READDIR4.status = NFS4ERR_SERVERFAULT;
              goto out;
            }

          /* Set the cookie value */
          entry_nfs_array[i].cookie = dirent_array[i]->cookie;

          /* Get the pentry for the object's attributes and filehandle */
          if( ( pentry = cache_inode_lookup_no_mutex( dir_pentry,
                                                      &dirent_array[i]->name,
                                                      data->pexport->cache_inode_policy,
                                                      &attrlookup,
                                                      data->ht,
                                                      data->pclient,
                                                      data->pcontext,
                                                      &cache_status ) ) == NULL )
            {
              Mem_Free((char *)entry_nfs_array);
              /* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
              entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
              entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
              res_READDIR4.status = NFS4ERR_SERVERFAULT;
              goto out;
            }

          /* If file handle is asked in the attributes, provide it */
          if(arg_READDIR4.attr_request.bitmap4_val != NULL
             && (arg_READDIR4.attr_request.bitmap4_val[0] & FATTR4_FILEHANDLE))
            {
              if((entry_FSALhandle =
                  cache_inode_get_fsal_handle(pentry,
                                              &cache_status_attr)) == NULL)
                {
                  /* Faulty Handle or pentry */
                  Mem_Free((char *)entry_nfs_array);
                  res_READDIR4.status = NFS4ERR_SERVERFAULT;
                  goto out;
                }

              if(!nfs4_FSALToFhandle(&entryFH, entry_FSALhandle, data))
                {
                  /* Faulty type */
                  Mem_Free((char *)entry_nfs_array);
                  res_READDIR4.status = NFS4ERR_SERVERFAULT;
                  goto out;
                }
            }

          if(nfs4_FSALattr_To_Fattr(data->pexport,
                                    &attrlookup,
                                    &(entry_nfs_array[i].attrs),
                                    data, &entryFH, &(arg_READDIR4.attr_request)) != 0)
            {
              /* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
              entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
              entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
            }

          /* Update the size of the output buffer */
          entrysize = sizeof( nfs_cookie4 ) ; /* nfs_cookie4 */
          entrysize += sizeof( u_int ) ; /* pathname4::utf8strings_len */
          entrysize +=  entry_nfs_array[i].name.utf8string_len ; 
          entrysize += sizeof( u_int ) ; /* bitmap4_len */
          entrysize +=  entry_nfs_array[i].attrs.attrmask.bitmap4_len ;
          entrysize += sizeof( u_int ) ; /* attrlist4_len */
          entrysize +=  entry_nfs_array[i].attrs.attr_vals.attrlist4_len ;
          entrysize += sizeof( caddr_t ) ;
          outbuffsize += entrysize;

          LogFullDebug(COMPONENT_NFS_V4,
                  " === nfs4_op_readdir ===>   i=%u name=%s cookie=%"PRIu64" "
                  "entrysize=%u buffsize=%u",
                  i, dirent_array[i]->name.name,
                  entry_nfs_array[i].cookie,
                  entrysize,
                  outbuffsize);

          /* Chain the entries together */
          entry_nfs_array[i].nextentry = NULL;
          if(i != 0)
           {
              if( outbuffsize < maxcount )
                entry_nfs_array[i - 1].nextentry = &(entry_nfs_array[i]);
              else
               {
                   LogFullDebug(COMPONENT_NFS_V4,
                           "=== nfs4_op_readdir ===> "
                           "maxcount reached at %u entries name=%s "
                           "cookie=%llu "
                           "buffsize=%u (return early)",
                           i+1, 
                           dirent_array[i]->name.name,
                           (unsigned long long)entry_nfs_array[i].cookie,
                           outbuffsize);
                 entry_nfs_array[i - 1].nextentry = NULL ;
                 break ;
               }
           }
        }                       /* for i */

      if((i == num_entries) && (eod_met == END_OF_DIR))
      {

          LogFullDebug(COMPONENT_NFS_V4,
                  "End of directory reached:  num_entries=%d i=%d",
                  num_entries,
                  i);

          /* This is the end of the directory */
          res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
          memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf,
                 cookie_verifier, NFS4_VERIFIER_SIZE);
      }

      /* Put the entry's list in the READDIR reply */
      res_READDIR4.READDIR4res_u.resok4.reply.entries = entry_nfs_array;
    }

  /* Do not forget to set the verifier */
  memcpy((char *)res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
         NFS4_VERIFIER_SIZE);

  res_READDIR4.status = NFS4_OK;

out:
  /* release read lock on dir_pentry, if requested */
  if (dir_pentry_unlock)
      V_r(&dir_pentry->lock);

  if (dirent_array)
   {
      if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) )
        cache_inode_release_dirent( dirent_array, num_entries, data->pclient ) ;

      Mem_Free((char *)dirent_array);
   }

  return res_READDIR4.status;
}                               /* nfs4_op_readdir */
Ejemplo n.º 22
0
int nfs41_op_layoutget(struct nfs_argop4 *op, compound_data_t * data,
                       struct nfs_resop4 *resp)
{
#ifdef _USE_PNFS
  cache_inode_state_data_t candidate_data;
  cache_inode_state_type_t candidate_type;
  cache_inode_state_t *file_state = NULL;
  cache_inode_status_t cache_status;
  cache_inode_state_t *pstate_exists = NULL;
  int rc;
#endif

  char __attribute__ ((__unused__)) funcname[] = "nfs41_op_layoutget";

#ifndef _USE_PNFS
  resp->resop = NFS4_OP_LAYOUTGET;
  res_LAYOUTGET4.logr_status = NFS4ERR_NOTSUPP;
  return res_LAYOUTGET4.logr_status;
#else
  char *buff = NULL;
  unsigned int lenbuff = 0;

  /* Lock are not supported */
  resp->resop = NFS4_OP_LAYOUTGET;

  if((buff = Mem_Alloc(1024)) == NULL)
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_SERVERFAULT;
      return res_LAYOUTGET4.logr_status;
    }


  /* Lock are not supported */
  resp->resop = NFS4_OP_LAYOUTGET;

  if((buff = Mem_Alloc(1024)) == NULL)
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_SERVERFAULT;
      return res_LAYOUTGET4.logr_status;
    }

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_NOFILEHANDLE;
      return res_LAYOUTGET4.logr_status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_BADHANDLE;
      return res_LAYOUTGET4.logr_status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_FHEXPIRED;
      return res_LAYOUTGET4.logr_status;
    }

  /* Commit is done only on a file */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* Type of the entry is not correct */
      switch (data->current_filetype)
        {
        case DIR_BEGINNING:
        case DIR_CONTINUE:
          res_LAYOUTGET4.logr_status = NFS4ERR_ISDIR;
          break;
        default:
          res_LAYOUTGET4.logr_status = NFS4ERR_INVAL;
          break;
        }

      return res_LAYOUTGET4.logr_status;
    }

  /* Parameters's consistency */
  if(arg_LAYOUTGET4.loga_length < arg_LAYOUTGET4.loga_minlength)
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_INVAL;
      return res_LAYOUTGET4.logr_status;
    }

  /* Check stateid correctness and get pointer to state */
  if((rc = nfs4_Check_Stateid(&arg_LAYOUTGET4.loga_stateid,
                              data->current_entry,
                              data->psession->clientid,
                              &pstate_exists,
                              data,
                              STATEID_SPECIAL_FOR_LOCK,
                              "LAYOUTGET")) != NFS4_OK)
    {
      res_LAYOUTGET4.logr_status = rc;
      return res_LAYOUTGET4.logr_status;
    }

  /* For the moment, only LAYOUT4_FILE is supported */
  switch (arg_LAYOUTGET4.loga_layout_type)
    {
    case LAYOUT4_NFSV4_1_FILES:
      /* Continue on proceeding the request */
      break;

    default:
      res_LAYOUTGET4.logr_status = NFS4ERR_NOTSUPP;
      return res_LAYOUTGET4.logr_status;
      break;
    }                           /* switch( arg_LAYOUTGET4.loga_layout_type ) */

  /* Add a pstate */
  candidate_type = CACHE_INODE_STATE_LAYOUT;
#if 0
  candidate_data.layout.layout_type = arg_LAYOUTGET4.loga_layout_type;
  candidate_data.layout.iomode = arg_LAYOUTGET4.loga_iomode;
  candidate_data.layout.offset = arg_LAYOUTGET4.loga_offset;
  candidate_data.layout.length = arg_LAYOUTGET4.loga_length;
  candidate_data.layout.minlength = arg_LAYOUTGET4.loga_minlength;
#endif

  /* Add the layout state to the table */
  if(state_add(data->current_entry,
                candidate_type,
                &candidate_data,
                pstate_exists->powner,
                data->pclient,
                data->pcontext,
                &file_state, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_LAYOUTGET4.logr_status = NFS4ERR_STALE_STATEID;
      return res_LAYOUTGET4.logr_status;
    }

  /* set the returned status */

  /* No return on close for the moment */
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_return_on_close = FALSE;

  /* Manages the stateid */
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_stateid.seqid = 1;
  memcpy(res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_stateid.other,
         arg_LAYOUTGET4.loga_stateid.other, OTHERSIZE);
  //file_state->stateid_other, OTHERSIZE);

  /* Now the layout specific information */
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_len = 1;  /** @todo manages more than one segment */
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val =
      (layout4 *) Mem_Alloc(sizeof(layout4));

  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val[0].lo_offset =
      arg_LAYOUTGET4.loga_offset;
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val[0].lo_length = 0xFFFFFFFFFFFFFFFFLL;   /* Whole file */
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val[0].lo_iomode =
      arg_LAYOUTGET4.loga_iomode;
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val[0].
      lo_content.loc_type = LAYOUT4_NFSV4_1_FILES;

  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val[0].
      lo_content.loc_body.loc_body_len = 1024 ;
  res_LAYOUTGET4.LAYOUTGET4res_u.logr_resok4.logr_layout.logr_layout_val[0].
      lo_content.loc_body.loc_body_val = buff;

  if( ( rc = pnfs_layoutget( &arg_LAYOUTGET4, data, &res_LAYOUTGET4 ) ) != NFS4_OK )
    {
       res_LAYOUTGET4.logr_status = rc ;
       return res_LAYOUTGET4.logr_status;
    }

  res_LAYOUTGET4.logr_status = NFS4_OK;
  return res_LAYOUTGET4.logr_status;
#endif                          /* _USE_PNFS */
}                               /* nfs41_op_layoutget */
Ejemplo n.º 23
0
int nfs4_op_lock(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_lock";

#ifndef _WITH_NFSV4_LOCKS
  /* Lock are not supported */
  resp->resop = NFS4_OP_LOCK;
  res_LOCK4.status = NFS4ERR_LOCK_NOTSUPP;

  return res_LOCK4.status;
#else

  state_status_t            state_status;
  state_data_t              candidate_data;
  state_type_t              candidate_type;
  int                       rc = 0;
  seqid4                    seqid;
  state_t                 * plock_state;    /* state for the lock */
  state_t                 * pstate_open;    /* state for the open owner */
  state_owner_t           * plock_owner;
  state_owner_t           * popen_owner;
  state_owner_t           * presp_owner;    /* Owner to store response in */
  state_owner_t           * conflict_owner = NULL;
  state_nfs4_owner_name_t   owner_name;
  nfs_client_id_t           nfs_client_id;
  state_lock_desc_t         lock_desc, conflict_desc;
  state_blocking_t          blocking = STATE_NON_BLOCKING;
  const char              * tag = "LOCK";

  LogDebug(COMPONENT_NFS_V4_LOCK,
           "Entering NFS v4 LOCK handler -----------------------------------------------------");

  /* Initialize to sane starting values */
  resp->resop = NFS4_OP_LOCK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_LOCK4.status = NFS4ERR_NOFILEHANDLE;
      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed nfs4_Is_Fh_Empty");
      return res_LOCK4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_LOCK4.status = NFS4ERR_BADHANDLE;
      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed nfs4_Is_Fh_Invalid");
      return res_LOCK4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_LOCK4.status = NFS4ERR_FHEXPIRED;
      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed nfs4_Is_Fh_Expired");
      return res_LOCK4.status;
    }

  /* Lock is done only on a file */
  if(data->current_filetype != REGULAR_FILE)
    {
      /* Type of the entry is not correct */
      switch (data->current_filetype)
        {
        case DIRECTORY:
          res_LOCK4.status = NFS4ERR_ISDIR;
          break;
        default:
          res_LOCK4.status = NFS4ERR_INVAL;
          break;
        }
      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed wrong file type");
      return res_LOCK4.status;
    }

  /* Convert lock parameters to internal types */
  switch(arg_LOCK4.locktype)
    {
      case READ_LT:
        lock_desc.sld_type = STATE_LOCK_R;
        blocking           = STATE_NON_BLOCKING;
        break;

      case WRITE_LT:
        lock_desc.sld_type = STATE_LOCK_W;
        blocking           = STATE_NON_BLOCKING;
        break;

      case READW_LT:
        lock_desc.sld_type = STATE_LOCK_R;
        blocking           = STATE_NFSV4_BLOCKING;
        break;

      case WRITEW_LT:
        lock_desc.sld_type = STATE_LOCK_W;
        blocking           = STATE_NFSV4_BLOCKING;
        break;
    }

  lock_desc.sld_offset = arg_LOCK4.offset;

  if(arg_LOCK4.length != STATE_LOCK_OFFSET_EOF)
    lock_desc.sld_length = arg_LOCK4.length;
  else
    lock_desc.sld_length = 0;

  if(arg_LOCK4.locker.new_lock_owner)
    {
      /* New lock owner, Find the open owner */
      tag = "LOCK (new owner)";

      /* Check stateid correctness and get pointer to state */
      if((rc = nfs4_Check_Stateid(&arg_LOCK4.locker.locker4_u.open_owner.open_stateid,
                                  data->current_entry,
                                  0LL,
                                  &pstate_open,
                                  data,
                                  STATEID_SPECIAL_FOR_LOCK,
                                  tag)) != NFS4_OK)
        {
          res_LOCK4.status = rc;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed nfs4_Check_Stateid for open owner");
          return res_LOCK4.status;
        }

      popen_owner = pstate_open->state_powner;
      plock_state = NULL;
      plock_owner = NULL;
      presp_owner = popen_owner;
      seqid       = arg_LOCK4.locker.locker4_u.open_owner.open_seqid;

      LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG,
              "LOCK New lock owner from open owner",
              data->current_entry,
              data->pcontext,
              popen_owner,
              &lock_desc);

      /* Check is the clientid is known or not */
      if(nfs_client_id_get(arg_LOCK4.locker.locker4_u.open_owner.lock_owner.clientid,
                           &nfs_client_id) == CLIENT_ID_NOT_FOUND)
        {
          res_LOCK4.status = NFS4ERR_STALE_CLIENTID;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed nfs_client_id_get");
          return res_LOCK4.status;
        }

      /* The related stateid is already stored in pstate_open */

      /* An open state has been found. Check its type */
      if(pstate_open->state_type != STATE_TYPE_SHARE)
        {
          res_LOCK4.status = NFS4ERR_BAD_STATEID;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed open stateid is not a SHARE");
          return res_LOCK4.status;
        }

      /* Lock seqid (seqid wanted for new lock) should be 0 (see newpynfs test LOCK8c)  */
      if(arg_LOCK4.locker.locker4_u.open_owner.lock_seqid != 0)
        {
          res_LOCK4.status = NFS4ERR_BAD_SEQID;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed new lock stateid is not 0");
          return res_LOCK4.status;
        }

      /* Is this lock_owner known ? */
      convert_nfs4_lock_owner(&arg_LOCK4.locker.locker4_u.open_owner.lock_owner,
                              &owner_name);
    }
  else
    {
      /* Existing lock owner
       * Find the lock stateid
       * From that, get the open_owner
       */
      tag = "LOCK (existing owner)";

      /* There was code here before to handle all-0 stateid, but that
       * really doesn't apply - when we handle temporary locks for
       * I/O operations (which is where we will see all-0 or all-1
       * stateid, those will not come in through nfs4_op_lock.
       */

      /* Check stateid correctness and get pointer to state */
      if((rc = nfs4_Check_Stateid(&arg_LOCK4.locker.locker4_u.lock_owner.lock_stateid,
                                  data->current_entry,
                                  0LL,
                                  &plock_state,
                                  data,
                                  STATEID_SPECIAL_FOR_LOCK,
                                  tag)) != NFS4_OK)
        {
          res_LOCK4.status = rc;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed nfs4_Check_Stateid for existing lock owner");
          return res_LOCK4.status;
        }

      /* An lock state has been found. Check its type */
      if(plock_state->state_type != STATE_TYPE_LOCK)
        {
          res_LOCK4.status = NFS4ERR_BAD_STATEID;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed existing lock owner, state type is not LOCK");
          return res_LOCK4.status;
        }

      /* Get the old lockowner. We can do the following 'cast', in NFSv4 lock_owner4 and open_owner4
       * are different types but with the same definition*/
      plock_owner = plock_state->state_powner;
      popen_owner = plock_owner->so_owner.so_nfs4_owner.so_related_owner;
      pstate_open = plock_state->state_data.lock.popenstate;
      presp_owner = plock_owner;
      seqid       = arg_LOCK4.locker.locker4_u.lock_owner.lock_seqid;

      LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG,
              "LOCK Existing lock owner",
              data->current_entry,
              data->pcontext,
              plock_owner,
              &lock_desc);

#ifdef _CONFORM_TO_TEST_LOCK8c
      /* Check validity of the seqid */
      if(arg_LOCK4.locker.locker4_u.lock_owner.lock_seqid != 0)
        {
          res_LOCK4.status = NFS4ERR_BAD_SEQID;
          LogDebug(COMPONENT_NFS_V4_LOCK,
                   "LOCK failed existing lock owner, lock seqid != 0");
          return res_LOCK4.status;
        }
#endif
    }                           /* if( arg_LOCK4.locker.new_lock_owner ) */

  /* Check seqid (lock_seqid or open_seqid) */
  if(!Check_nfs4_seqid(presp_owner, seqid, op, data, resp, tag))
    {
      /* Response is all setup for us and LogDebug told what was wrong */
      return res_LOCK4.status;
    }

  /* Lock length should not be 0 */
  if(arg_LOCK4.length == 0LL)
    {
      res_LOCK4.status = NFS4ERR_INVAL;
      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed length == 0");

      /* Save the response in the lock or open owner */
      Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag);

      return res_LOCK4.status;
    }

  /* Check for range overflow.
   * Comparing beyond 2^64 is not possible int 64 bits precision,
   * but off+len > 2^64-1 is equivalent to len > 2^64-1 - off
   */
  if(lock_desc.sld_length > (STATE_LOCK_OFFSET_EOF - lock_desc.sld_offset))
    {
      res_LOCK4.status = NFS4ERR_INVAL;
      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed length overflow");

      /* Save the response in the lock or open owner */
      Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag);

      return res_LOCK4.status;
    }

  /* check if open state has correct access for type of lock.
   * Don't need to check for conflicting states since this open
   * state assures there are no conflicting states.
   */
  if(((arg_LOCK4.locktype == WRITE_LT || arg_LOCK4.locktype == WRITEW_LT) &&
      ((pstate_open->state_data.share.share_access & OPEN4_SHARE_ACCESS_WRITE) == 0)) ||
     ((arg_LOCK4.locktype == READ_LT || arg_LOCK4.locktype == READW_LT) &&
      ((pstate_open->state_data.share.share_access & OPEN4_SHARE_ACCESS_READ) == 0)))
    {
      /* The open state doesn't allow access based on the type of lock */
      LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG,
              "LOCK failed, SHARE doesn't allow access",
              data->current_entry,
              data->pcontext,
              plock_owner,
              &lock_desc);

      res_LOCK4.status = NFS4ERR_OPENMODE;

      /* Save the response in the lock or open owner */
      Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag);

      return res_LOCK4.status;
    }

  if(arg_LOCK4.locker.new_lock_owner)
    {
      /* A lock owner is always associated with a previously made open
       * which has itself a previously made stateid
       */

      /* Get reference to open owner */
      inc_state_owner_ref(popen_owner);

      if(nfs4_owner_Get_Pointer(&owner_name, &plock_owner))
        {
          /* Lock owner already existsc, check lock_seqid if it's not 0 */
          if(!Check_nfs4_seqid(plock_owner,
                               arg_LOCK4.locker.locker4_u.open_owner.lock_seqid,
                               op,
                               data,
                               resp,
                               "LOCK (new owner but owner exists)"))
            {
              /* Response is all setup for us and LogDebug told what was wrong */
              return res_LOCK4.status;
            }
        }
      else
        {
          /* This lock owner is not known yet, allocated and set up a new one */
          plock_owner = create_nfs4_owner(data->pclient,
                                          &owner_name,
                                          STATE_LOCK_OWNER_NFSV4,
                                          popen_owner,
                                          0);

          if(plock_owner == NULL)
            {
              res_LOCK4.status = NFS4ERR_RESOURCE;

              LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG,
                      "LOCK failed to create new lock owner",
                      data->current_entry,
                      data->pcontext,
                      popen_owner,
                      &lock_desc);

              return res_LOCK4.status;
            }
        }

      /* Prepare state management structure */
      memset(&candidate_type, 0, sizeof(candidate_type));
      candidate_type = STATE_TYPE_LOCK;
      candidate_data.lock.popenstate = pstate_open;

      /* Add the lock state to the lock table */
      if(state_add(data->current_entry,
                   candidate_type,
                   &candidate_data,
                   plock_owner,
                   data->pclient,
                   data->pcontext,
                   &plock_state, &state_status) != STATE_SUCCESS)
        {
          res_LOCK4.status = NFS4ERR_RESOURCE;

          LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG,
                  "LOCK failed to add new stateid",
                  data->current_entry,
                  data->pcontext,
                  plock_owner,
                  &lock_desc);

          dec_state_owner_ref(plock_owner, data->pclient);

          return res_LOCK4.status;
        }

      init_glist(&plock_state->state_data.lock.state_locklist);

      /* Add lock state to the list of lock states belonging to the open state */
      glist_add_tail(&pstate_open->state_data.share.share_lockstates,
                     &plock_state->state_data.lock.state_sharelist);
    }                           /* if( arg_LOCK4.locker.new_lock_owner ) */

  /* Now we have a lock owner and a stateid.
   * Go ahead and push lock into SAL (and FSAL).
   */
  if(state_lock(data->current_entry,
                data->pcontext,
                plock_owner,
                plock_state,
                blocking,
                NULL,     /* No block data for now */
                &lock_desc,
                &conflict_owner,
                &conflict_desc,
                data->pclient,
                &state_status) != STATE_SUCCESS)
    {
      if(state_status == STATE_LOCK_CONFLICT)
        {
          /* A  conflicting lock from a different lock_owner, returns NFS4ERR_DENIED */
          Process_nfs4_conflict(&res_LOCK4.LOCK4res_u.denied,
                                conflict_owner,
                                &conflict_desc,
                                data->pclient);
        }

      LogDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK failed with status %s",
               state_err_str(state_status));

      res_LOCK4.status = nfs4_Errno_state(state_status);

      /* Save the response in the lock or open owner */
      if(res_LOCK4.status != NFS4ERR_RESOURCE &&
         res_LOCK4.status != NFS4ERR_BAD_STATEID)
        Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag);

      if(arg_LOCK4.locker.new_lock_owner)
        {
          /* Need to destroy lock owner and state */
          if(state_del(plock_state,
                       data->pclient,
                       &state_status) != STATE_SUCCESS)
            LogDebug(COMPONENT_NFS_V4_LOCK,
                     "state_del failed with status %s",
                     state_err_str(state_status));
        }

      return res_LOCK4.status;
    }

  res_LOCK4.status = NFS4_OK;

  /* Handle stateid/seqid for success */
  update_stateid(plock_state,
                 &res_LOCK4.LOCK4res_u.resok4.lock_stateid,
                 data,
                 tag);

  LogFullDebug(COMPONENT_NFS_V4_LOCK,
               "LOCK state_seqid = %u, plock_state = %p",
               plock_state->state_seqid,
               plock_state);

  /* Save the response in the lock or open owner */
  Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag);

  LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG,
          "LOCK applied",
          data->current_entry,
          data->pcontext,
          plock_owner,
          &lock_desc);

  return res_LOCK4.status;
#endif
}                               /* nfs4_op_lock */
Ejemplo n.º 24
0
int nfs4_op_create(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  cache_entry_t *pentry_parent = NULL;
  cache_entry_t *pentry_new = NULL;

  fsal_attrib_list_t attr_parent;
  fsal_attrib_list_t attr_new;
  fsal_attrib_list_t sattr;

  fsal_handle_t *pnewfsal_handle = NULL;

  nfs_fh4 newfh4;
  cache_inode_status_t cache_status;
  int convrc = 0;

  fsal_accessmode_t mode = 0600;
  fsal_name_t name;

  cache_inode_create_arg_t create_arg;

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_create";
  unsigned int i = 0;

  resp->resop = NFS4_OP_CREATE;
  res_CREATE4.status = NFS4_OK;

  /* If the filehandle is Empty */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_CREATE4.status = NFS4ERR_NOFILEHANDLE;
      return res_CREATE4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_CREATE4.status = NFS4ERR_BADHANDLE;
      return res_CREATE4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_CREATE4.status = NFS4ERR_FHEXPIRED;
      return res_CREATE4.status;
    }

  /* Pseudo Fs is explictely a Read-Only File system */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    {
      res_CREATE4.status = NFS4ERR_ROFS;
      return res_CREATE4.status;
    }

  /* Ask only for supported attributes */
  if(!nfs4_Fattr_Supported(&arg_CREATE4.createattrs))
    {
      res_CREATE4.status = NFS4ERR_ATTRNOTSUPP;
      return res_CREATE4.status;
    }

  /* Do not use READ attr, use WRITE attr */
  if(!nfs4_Fattr_Check_Access(&arg_CREATE4.createattrs, FATTR4_ATTR_WRITE))
    {
      res_CREATE4.status = NFS4ERR_INVAL;
      return res_CREATE4.status;
    }

  /* Check for name to long */
  if(arg_CREATE4.objname.utf8string_len > FSAL_MAX_NAME_LEN)
    {
      res_CREATE4.status = NFS4ERR_NAMETOOLONG;
      return res_CREATE4.status;
    }

  /* 
   * This operation is used to create a non-regular file, 
   * this means: - a symbolic link
   *             - a block device file
   *             - a character device file
   *             - a socket file
   *             - a fifo
   *             - a directory 
   *
   * You can't use this operation to create a regular file, you have to use NFS4_OP_OPEN for this
   */

  /* Convert the UFT8 objname to a regular string */
  if(arg_CREATE4.objname.utf8string_len == 0)
    {
      res_CREATE4.status = NFS4ERR_INVAL;
      return res_CREATE4.status;
    }

  if(utf82str(name.name, &arg_CREATE4.objname) == -1)
    {
      res_CREATE4.status = NFS4ERR_INVAL;
      return res_CREATE4.status;
    }
  name.len = strlen(name.name);

  /* Sanuty check: never create a directory named '.' or '..' */
  if(arg_CREATE4.objtype.type == NF4DIR)
    {
      if(!FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT)
         || !FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT_DOT))
        {
          res_CREATE4.status = NFS4ERR_BADNAME;
          return res_CREATE4.status;
        }

    }

  /* Filename should contain not slash */
  for(i = 0; i < name.len; i++)
    {
      if(name.name[i] == '/')
        {
          res_CREATE4.status = NFS4ERR_BADCHAR;
          return res_CREATE4.status;
        }
    }
  /* Convert current FH into a cached entry, the current_pentry (assocated with the current FH will be used for this */
  pentry_parent = data->current_entry;

  /* The currentFH must point to a directory (objects are always created within a directory) */
  if(data->current_filetype != DIR_BEGINNING && data->current_filetype != DIR_CONTINUE)
    {
      res_CREATE4.status = NFS4ERR_NOTDIR;
      return res_CREATE4.status;
    }

  /* get attributes of parent directory, for 'change4' info replyed */
  if((cache_status = cache_inode_getattr(pentry_parent,
                                         &attr_parent,
                                         data->ht,
                                         data->pclient,
                                         data->pcontext,
                                         &cache_status)) != CACHE_INODE_SUCCESS)
    {
      res_CREATE4.status = nfs4_Errno(cache_status);
      return res_CREATE4.status;
    }
  /* Change info for client cache coherency, pentry internal_md is used for that */
  memset(&(res_CREATE4.CREATE4res_u.resok4.cinfo.before), 0, sizeof(changeid4));
  res_CREATE4.CREATE4res_u.resok4.cinfo.before =
      (changeid4) pentry_parent->internal_md.mod_time;

  /* Convert the incoming fattr4 to a vattr structure, if such arguments are supplied */
  if(arg_CREATE4.createattrs.attrmask.bitmap4_len != 0)
    {
      /* Arguments were supplied, extract them */
      convrc = nfs4_Fattr_To_FSAL_attr(&sattr, &(arg_CREATE4.createattrs));

      if(convrc == 0)
        {
          res_CREATE4.status = NFS4ERR_ATTRNOTSUPP;
          return res_CREATE4.status;
        }

      if(convrc == -1)
        {
          res_CREATE4.status = NFS4ERR_BADXDR;
          return res_CREATE4.status;
        }
    }

  /* Create either a symbolic link or a directory */
  switch (arg_CREATE4.objtype.type)
    {
    case NF4LNK:
      /* Convert the name to link from into a regular string */
      if(arg_CREATE4.objtype.createtype4_u.linkdata.utf8string_len == 0)
        {
          res_CREATE4.status = NFS4ERR_INVAL;
          return res_CREATE4.status;
        }
      else
        {
          if(utf82str
             (create_arg.link_content.path,
              &arg_CREATE4.objtype.createtype4_u.linkdata) == -1)
            {
              res_CREATE4.status = NFS4ERR_INVAL;
              return res_CREATE4.status;
            }
          create_arg.link_content.len = strlen(create_arg.link_content.path);
        }

      /* do the symlink operation */
      if((pentry_new = cache_inode_create(pentry_parent,
                                          &name,
                                          SYMBOLIC_LINK,
                                          mode,
                                          &create_arg,
                                          &attr_new,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* If entry exists pentry_new is not null but cache_status was set */
      if(cache_status == CACHE_INODE_ENTRY_EXISTS)
        {
          res_CREATE4.status = NFS4ERR_EXIST;
          return res_CREATE4.status;
        }

      break;
    case NF4DIR:
      /* Create a new directory */
      /* do the symlink operation */
      if((pentry_new = cache_inode_create(pentry_parent,
                                          &name,
                                          DIR_BEGINNING,
                                          mode,
                                          &create_arg,
                                          &attr_new,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* If entry exists pentry_new is not null but cache_status was set */
      if(cache_status == CACHE_INODE_ENTRY_EXISTS)
        {
          res_CREATE4.status = NFS4ERR_EXIST;
          return res_CREATE4.status;
        }
      break;

    case NF4SOCK:

      /* Create a new socket file */
      if((pentry_new = cache_inode_create(pentry_parent,
                                          &name,
                                          SOCKET_FILE,
                                          mode,
                                          NULL,
                                          &attr_new,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* If entry exists pentry_new is not null but cache_status was set */
      if(cache_status == CACHE_INODE_ENTRY_EXISTS)
        {
          res_CREATE4.status = NFS4ERR_EXIST;
          return res_CREATE4.status;
        }
      break;

    case NF4FIFO:

      /* Create a new socket file */
      if((pentry_new = cache_inode_create(pentry_parent,
                                          &name,
                                          FIFO_FILE,
                                          mode,
                                          NULL,
                                          &attr_new,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* If entry exists pentry_new is not null but cache_status was set */
      if(cache_status == CACHE_INODE_ENTRY_EXISTS)
        {
          res_CREATE4.status = NFS4ERR_EXIST;
          return res_CREATE4.status;
        }
      break;

    case NF4CHR:

      create_arg.dev_spec.major = arg_CREATE4.objtype.createtype4_u.devdata.specdata1;
      create_arg.dev_spec.minor = arg_CREATE4.objtype.createtype4_u.devdata.specdata2;

      /* Create a new socket file */
      if((pentry_new = cache_inode_create(pentry_parent,
                                          &name,
                                          CHARACTER_FILE,
                                          mode,
                                          &create_arg,
                                          &attr_new,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* If entry exists pentry_new is not null but cache_status was set */
      if(cache_status == CACHE_INODE_ENTRY_EXISTS)
        {
          res_CREATE4.status = NFS4ERR_EXIST;
          return res_CREATE4.status;
        }
      break;

    case NF4BLK:

      create_arg.dev_spec.major = arg_CREATE4.objtype.createtype4_u.devdata.specdata1;
      create_arg.dev_spec.minor = arg_CREATE4.objtype.createtype4_u.devdata.specdata2;

      /* Create a new socket file */
      if((pentry_new = cache_inode_create(pentry_parent,
                                          &name,
                                          BLOCK_FILE,
                                          mode,
                                          &create_arg,
                                          &attr_new,
                                          data->ht,
                                          data->pclient,
                                          data->pcontext, &cache_status)) == NULL)
        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* If entry exists pentry_new is not null but cache_status was set */
      if(cache_status == CACHE_INODE_ENTRY_EXISTS)
        {
          res_CREATE4.status = NFS4ERR_EXIST;
          return res_CREATE4.status;
        }
      break;

    default:
      /* Should never happen, but return NFS4ERR_BADTYPE in this case */
      res_CREATE4.status = NFS4ERR_BADTYPE;
      return res_CREATE4.status;
      break;
    }                           /* switch( arg_CREATE4.objtype.type ) */

  /* Now produce the filehandle to this file */
  if((pnewfsal_handle = cache_inode_get_fsal_handle(pentry_new, &cache_status)) == NULL)
    {
      res_CREATE4.status = nfs4_Errno(cache_status);
      return res_CREATE4.status;
    }

  /* Allocation of a new file handle */
  if(nfs4_AllocateFH(&newfh4) != NFS4_OK)
    {
      res_CREATE4.status = NFS4ERR_SERVERFAULT;
      return res_CREATE4.status;
    }

  /* Building the new file handle */
  if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
    {
      res_CREATE4.status = NFS4ERR_SERVERFAULT;
      return res_CREATE4.status;
    }

  /* This new fh replaces the current FH */
  data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
  memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val, newfh4.nfs_fh4_len);

  /* No do not need newfh any more */
  Mem_Free((char *)newfh4.nfs_fh4_val);

  /* Set the mode if requested */
  /* Use the same fattr mask for reply, if one attribute was not settable, NFS4ERR_ATTRNOTSUPP was replyied */
  res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len =
      arg_CREATE4.createattrs.attrmask.bitmap4_len;

  if(arg_CREATE4.createattrs.attrmask.bitmap4_len != 0)
    {
      if((cache_status = cache_inode_setattr(pentry_new,
                                             &sattr,
                                             data->ht,
                                             data->pclient,
                                             data->pcontext,
                                             &cache_status)) != CACHE_INODE_SUCCESS)

        {
          res_CREATE4.status = nfs4_Errno(cache_status);
          return res_CREATE4.status;
        }

      /* Allocate a new bitmap */
      res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val =
          (unsigned int *)Mem_Alloc(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len *
                                    sizeof(u_int));

      if(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val == NULL)
        {
          res_CREATE4.status = NFS4ERR_SERVERFAULT;
          return res_CREATE4.status;
        }
      memset(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val, 0,
             res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len);

      memcpy(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val,
             arg_CREATE4.createattrs.attrmask.bitmap4_val,
             res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len * sizeof(u_int));
    }

  /* Get the change info on parent directory after the operation was successfull */
  if((cache_status = cache_inode_getattr(pentry_parent,
                                         &attr_parent,
                                         data->ht,
                                         data->pclient,
                                         data->pcontext,
                                         &cache_status)) != CACHE_INODE_SUCCESS)
    {
      res_CREATE4.status = nfs4_Errno(cache_status);
      return res_CREATE4.status;
    }
  memset(&(res_CREATE4.CREATE4res_u.resok4.cinfo.after), 0, sizeof(changeid4));
  res_CREATE4.CREATE4res_u.resok4.cinfo.after =
      (changeid4) pentry_parent->internal_md.mod_time;

  /* Operation is supposed to be atomic .... */
  res_CREATE4.CREATE4res_u.resok4.cinfo.atomic = TRUE;

  LogFullDebug(COMPONENT_NFS_V4, "           CREATE CINFO before = %llu  after = %llu  atomic = %d\n",
         res_CREATE4.CREATE4res_u.resok4.cinfo.before,
         res_CREATE4.CREATE4res_u.resok4.cinfo.after,
         res_CREATE4.CREATE4res_u.resok4.cinfo.atomic);

  /* @todo : BUGAZOMEU: fair ele free dans cette fonction */

  /* Keep the vnode entry for the file in the compound data */
  data->current_entry = pentry_new;
  data->current_filetype = pentry_new->internal_md.type;

  /* If you reach this point, then no error occured */
  res_CREATE4.status = NFS4_OK;

  return res_CREATE4.status;
}                               /* nfs4_op_create */
Ejemplo n.º 25
0
int nfs4_op_remove(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
  cache_entry_t *parent_entry = NULL;

  fsal_attrib_list_t attr_parent;
  fsal_name_t name;

  cache_inode_status_t cache_status;
#ifdef _USE_PNFS
  pnfs_file_t pnfs_file;
#endif

  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_remove";

  resp->resop = NFS4_OP_REMOVE;
  res_REMOVE4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_REMOVE4.status = NFS4ERR_NOFILEHANDLE;
      return res_REMOVE4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_REMOVE4.status = NFS4ERR_BADHANDLE;
      return res_REMOVE4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_REMOVE4.status = NFS4ERR_FHEXPIRED;
      return res_REMOVE4.status;
    }

  /* Pseudo Fs is explictely a Read-Only File system */
  if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
    {
      res_REMOVE4.status = NFS4ERR_ROFS;
      return res_REMOVE4.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_remove_xattr(op, data, resp);

  /* Get the parent entry (aka the current one in the compound data) */
  parent_entry = data->current_entry;

  /* We have to keep track of the 'change' file attribute for reply structure */
  memset(&(res_REMOVE4.REMOVE4res_u.resok4.cinfo.before), 0, sizeof(changeid4));
  res_REMOVE4.REMOVE4res_u.resok4.cinfo.before =
      (changeid4) parent_entry->internal_md.mod_time;

  /* The operation delete object named arg_REMOVE4.target in directory pointed bt cuurentFH */
  /* Make sur the currentFH is pointed a directory */
  if(data->current_filetype != DIR_BEGINNING && data->current_filetype != DIR_CONTINUE)
    {
      res_REMOVE4.status = NFS4ERR_NOTDIR;
      return res_REMOVE4.status;
    }

  /* Check for name length */
  if(arg_REMOVE4.target.utf8string_len > FSAL_MAX_NAME_LEN)
    {
      res_REMOVE4.status = NFS4ERR_NAMETOOLONG;
      return res_REMOVE4.status;
    }

  /* get the filename from the argument, it should not be empty */
  if(arg_REMOVE4.target.utf8string_len == 0)
    {
      res_REMOVE4.status = NFS4ERR_INVAL;
      return res_REMOVE4.status;
    }

  /* NFS4_OP_REMOVE can delete files as well as directory, it replaces NFS3_RMDIR and NFS3_REMOVE
   * because of this, we have to know if object is a directory or not */
  if((cache_status =
      cache_inode_error_convert(FSAL_buffdesc2name
                                ((fsal_buffdesc_t *) & arg_REMOVE4.target,
                                 &name))) != CACHE_INODE_SUCCESS)
    {
      res_REMOVE4.status = nfs4_Errno(cache_status);
      return res_REMOVE4.status;
    }

  /* Test RM7: remiving '.' should return NFS4ERR_BADNAME */
  if(!FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT)
     || !FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT_DOT))
    {
      res_REMOVE4.status = NFS4ERR_BADNAME;
      return res_REMOVE4.status;
    }

  if((cache_status = cache_inode_remove(parent_entry,
                                        &name,
                                        &attr_parent,
                                        data->ht,
                                        data->pclient,
                                        data->pcontext,
                                        &cache_status)) != CACHE_INODE_SUCCESS)
    {
      res_REMOVE4.status = nfs4_Errno(cache_status);
      return res_REMOVE4.status;
    }

  /* We have to keep track of the 'change' file attribute for reply structure */
  memset(&(res_REMOVE4.REMOVE4res_u.resok4.cinfo.before), 0, sizeof(changeid4));
  res_REMOVE4.REMOVE4res_u.resok4.cinfo.after =
      (changeid4) parent_entry->internal_md.mod_time;

  /* Operation was not atomic .... */
  res_REMOVE4.REMOVE4res_u.resok4.cinfo.atomic = TRUE;

  /* If you reach this point, everything was ok */

  res_REMOVE4.status = NFS4_OK;

  return NFS4_OK;
}                               /* nfs4_op_remove */
Ejemplo n.º 26
0
int nfs4_op_open_confirm(struct nfs_argop4 *op,
                         compound_data_t * data, struct nfs_resop4 *resp)
{
  char __attribute__ ((__unused__)) funcname[] = "nfs4_op_open_confirm";
  int rc = 0;
  cache_inode_state_t *pstate_found = NULL;
  cache_inode_status_t cache_status;

  resp->resop = NFS4_OP_OPEN_CONFIRM;
  res_OPEN_CONFIRM4.status = NFS4_OK;

  /* If there is no FH */
  if(nfs4_Is_Fh_Empty(&(data->currentFH)))
    {
      res_OPEN_CONFIRM4.status = NFS4ERR_NOFILEHANDLE;
      return res_OPEN_CONFIRM4.status;
    }

  /* If the filehandle is invalid */
  if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
    {
      res_OPEN_CONFIRM4.status = NFS4ERR_BADHANDLE;
      return res_OPEN_CONFIRM4.status;
    }

  /* Tests if the Filehandle is expired (for volatile filehandle) */
  if(nfs4_Is_Fh_Expired(&(data->currentFH)))
    {
      res_OPEN_CONFIRM4.status = NFS4ERR_FHEXPIRED;
      return res_OPEN_CONFIRM4.status;
    }

  /* Should not operate on non-file objects */
  if(data->current_entry->internal_md.type != REGULAR_FILE)
    {
      switch (data->current_entry->internal_md.type)
        {
        case DIR_BEGINNING:
        case DIR_CONTINUE:
          res_OPEN_CONFIRM4.status = NFS4ERR_ISDIR;
          return res_OPEN_CONFIRM4.status;
          break;
        default:
          res_OPEN_CONFIRM4.status = NFS4ERR_INVAL;
          return res_OPEN_CONFIRM4.status;
          break;

        }
    }

  /* Does the stateid match ? */
  if((rc =
      nfs4_Check_Stateid(&arg_OPEN_CONFIRM4.open_stateid, data->current_entry,
                         0LL)) != NFS4_OK)
    {
      res_OPEN_CONFIRM4.status = rc;
      return res_OPEN_CONFIRM4.status;
    }

  /* Get the related state */
  if(cache_inode_get_state(arg_OPEN_CONFIRM4.open_stateid.other,
                           &pstate_found,
                           data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_OPEN_CONFIRM4.status = nfs4_Errno(cache_status);
      return res_OPEN_CONFIRM4.status;
    }

  /* If opened file is already confirmed, retrun NFS4ERR_BAD_STATEID */
  P(pstate_found->powner->lock);
  if(pstate_found->powner->confirmed == TRUE)
    {
      V(pstate_found->powner->lock);
      res_OPEN_CONFIRM4.status = NFS4ERR_BAD_STATEID;
      return res_OPEN_CONFIRM4.status;
    }

  if(pstate_found->powner->seqid != arg_OPEN_CONFIRM4.seqid)
    {
      if(pstate_found->powner->seqid + 1 != arg_OPEN_CONFIRM4.seqid)
        {
          V(pstate_found->powner->lock);
          res_OPEN_CONFIRM4.status = NFS4ERR_BAD_SEQID;
          return res_OPEN_CONFIRM4.status;
        }
    }

  /* Set the state as confirmed */
  pstate_found->powner->confirmed = TRUE;
  pstate_found->powner->seqid += 1;
  V(pstate_found->powner->lock);

  /* Update the state */
  pstate_found->seqid += 1;
  if(cache_inode_update_state(pstate_found,
                              data->pclient, &cache_status) != CACHE_INODE_SUCCESS)
    {
      res_OPEN_CONFIRM4.status = nfs4_Errno(cache_status);
      return res_OPEN_CONFIRM4.status;
    }

  /* Return the stateid to the client */
  res_OPEN_CONFIRM4.OPEN_CONFIRM4res_u.resok4.open_stateid.seqid =
      arg_OPEN_CONFIRM4.seqid;
  memcpy(res_OPEN_CONFIRM4.OPEN_CONFIRM4res_u.resok4.open_stateid.other,
         pstate_found->stateid_other, 12);

  return res_OPEN_CONFIRM4.status;
}                               /* nfs4_op_open_confirm */