GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/gen/ftok.c Lines: 0 5 0.0 %
Date: 2017-11-13 Branches: 0 2 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: ftok.c,v 1.8 2014/11/15 22:38:47 guenther Exp $ */
2
/*
3
 * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 * 1. Redistributions of source code must retain the above copyright
10
 *    notice, this list of conditions and the following disclaimer.
11
 * 2. Redistributions in binary form must reproduce the above copyright
12
 *    notice, this list of conditions and the following disclaimer in the
13
 *    documentation and/or other materials provided with the distribution.
14
 * 3. The name of the author may not be used to endorse or promote products
15
 *    derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
29
#include <sys/stat.h>
30
#include <sys/ipc.h>
31
32
key_t
33
ftok(const char *path, int id)
34
{
35
	struct stat st;
36
37
	if (stat(path, &st) < 0)
38
		return (key_t)-1;
39
40
	return (key_t)
41
	    ((id & 0xff) << 24 | (st.st_dev & 0xff) << 16 | (st.st_ino & 0xffff));
42
}