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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*      Copyright (c) 1984 AT&T */
     23 /*        All Rights Reserved   */
     24 
     25 #pragma ident	"%Z%%M%	%I%	%E% SMI"  /* from S5R2 1.2 */
     26 
     27 #include <sys/types.h>
     28 #include <sys/stat.h>
     29 #include <sys/sysmacros.h>
     30 
     31 key_t
     32 ftok(path, id)
     33 char *path;
     34 char id;
     35 {
     36 	struct stat st;
     37 
     38 	return(stat(path, &st) < 0 ? (key_t)-1 :
     39 	    (key_t)((key_t)id << 24 | ((long)(unsigned)minor(st.st_dev)) << 16 |
     40 		(unsigned)st.st_ino));
     41 }
     42