18198Sjoerg/* 28198Sjoerg * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com> 38198Sjoerg * All rights reserved. 48198Sjoerg * 58198Sjoerg * Redistribution and use in source and binary forms, with or without 68198Sjoerg * modification, are permitted provided that the following conditions 78198Sjoerg * are met: 88198Sjoerg * 1. Redistributions of source code must retain the above copyright 98198Sjoerg * notice, this list of conditions and the following disclaimer. 108198Sjoerg * 2. Redistributions in binary form must reproduce the above copyright 118198Sjoerg * notice, this list of conditions and the following disclaimer in the 128198Sjoerg * documentation and/or other materials provided with the distribution. 138198Sjoerg * 3. The name of the author may not be used to endorse or promote products 148198Sjoerg * derived from this software without specific prior written permission. 158198Sjoerg * 168198Sjoerg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 178198Sjoerg * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 188198Sjoerg * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 198198Sjoerg * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 208198Sjoerg * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 218198Sjoerg * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 228198Sjoerg * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 238198Sjoerg * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 248198Sjoerg * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 258198Sjoerg * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 268198Sjoerg */ 278198Sjoerg 2890039Sobrien#include <sys/cdefs.h> 2990039Sobrien__FBSDID("$FreeBSD: releng/10.3/lib/libc/gen/ftok.c 129926 2004-06-01 06:53:07Z tjr $"); 308198Sjoerg 318198Sjoerg#include <sys/types.h> 328198Sjoerg#include <sys/stat.h> 338198Sjoerg#include <sys/ipc.h> 348198Sjoerg 358198Sjoergkey_t 368198Sjoergftok(path, id) 378198Sjoerg const char *path; 38129926Stjr int id; 398198Sjoerg{ 408198Sjoerg struct stat st; 418198Sjoerg 428198Sjoerg if (stat(path, &st) < 0) 438198Sjoerg return (key_t)-1; 448198Sjoerg 458198Sjoerg return (key_t) (id << 24 | (st.st_dev & 0xff) << 16 | (st.st_ino & 0xffff)); 468198Sjoerg} 47