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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [ftok.c] - Rev 207

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/* Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
   The GNU C Library 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 2.1 of the License, or (at your option) any later version.
 
   The GNU C Library 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 the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */
 
/* Modified for newlib by Jeff Johnston, June 10/2002 */
 
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/stat.h>
 
#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 2
#define STAT stat64
#else
#define STAT stat
#endif
 
key_t
ftok (pathname, proj_id)
     const char *pathname;
     int proj_id;
{
  struct STAT st;
  key_t key;
 
  if (STAT (pathname, &st) < 0)
    return (key_t) -1;
 
  key = ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16)
	 | ((proj_id & 0xff) << 24));
 
  return key;
}
 

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