9p_getlock.c

Go to the documentation of this file.

/*
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 * Copyright CEA/DAM/DIF  (2011)
 * contributeur : Philippe DENIEL   philippe.deniel@cea.fr
 *                Thomas LEIBOVICI  thomas.leibovici@cea.fr
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * ---------------------------------------
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

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

#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <sys/stat.h>
#include "nfs_core.h"
#include "abstract_mem.h"
#include "log.h"
#include "cache_inode.h"
#include "sal_functions.h"
#include "fsal.h"
#include "9p.h"

int _9p_getlock( _9p_request_data_t * preq9p, 
                 void  * pworker_data,
                 u32 * plenout, 
                 char * preply)
{
  char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ;
 
  u16  * msgtag        = NULL ;
  u32  * fid           = NULL ;
  u8   * type          = NULL ;
  u64  * start         = NULL ;
  u64  * length        = NULL ;
  u32  * proc_id       = NULL ;
  u16  * client_id_len = NULL ;
  char * client_id_str = NULL ;

  // _9p_fid_t * pfid = NULL ;

  if ( !preq9p || !pworker_data || !plenout || !preply )
   return -1 ;

  /* Get data */
  _9p_getptr( cursor, msgtag, u16 ) ; 
  
  _9p_getptr( cursor, fid,     u32 ) ; 
  _9p_getptr( cursor, type,    u8 )  ;
  _9p_getptr( cursor, start,   u64 ) ;
  _9p_getptr( cursor, length,  u64 ) ;
  _9p_getptr( cursor, proc_id, u32 ) ;
  _9p_getstr( cursor, client_id_len, client_id_str ) ;

  LogDebug( COMPONENT_9P, "TGETLOCK: tag=%u fid=%u type=%u start=%llu length=%llu proc_id=%u client=%.*s",
            (u32)*msgtag, *fid, *type, (unsigned long long)*start, (unsigned long long)*length, 
            *proc_id, *client_id_len, client_id_str ) ;

  if( *fid >= _9P_FID_PER_CONN )
   return _9p_rerror( preq9p, msgtag, ERANGE, plenout, preply ) ;

   // pfid = &preq9p->pconn->fids[*fid] ;

   /* Build the reply */
  _9p_setinitptr( cursor, preply, _9P_RGETLOCK ) ;
  _9p_setptr( cursor, msgtag, u16 ) ;

  _9p_setptr( cursor, type,    u8 )  ;
  _9p_setptr( cursor, start,   u64 ) ;
  _9p_setptr( cursor, length,  u64 ) ;
  _9p_setptr( cursor, proc_id, u32 ) ;
  _9p_setstr( cursor, *client_id_len, client_id_str ) ;

  _9p_setendptr( cursor, preply ) ;
  _9p_checkbound( cursor, preply, plenout ) ;

  LogDebug( COMPONENT_9P, "RGETLOCK: tag=%u fid=%u type=%u start=%llu length=%llu proc_id=%u client=%.*s",
            (u32)*msgtag, *fid, *type, (unsigned long long)*start, (unsigned long long)*length, 
            *proc_id, *client_id_len, client_id_str ) ;

  return 1 ;
}