1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002 Alfred Perlstein <alfred@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef _POSIX4_KSEM_H_
32#define	_POSIX4_KSEM_H_
33
34#if !defined(_KERNEL) && !defined(_WANT_FILE)
35#error "no user-serviceable parts inside"
36#endif
37
38#include <sys/condvar.h>
39
40struct ksem {
41	int		ks_ref;		/* number of references */
42	mode_t		ks_mode;	/* protection bits */
43	uid_t		ks_uid;		/* creator uid */
44	gid_t		ks_gid;		/* creator gid */
45	unsigned int	ks_value;	/* current value */
46	struct cv	ks_cv;		/* waiters sleep here */
47	int		ks_waiters;	/* number of waiters */
48	int		ks_flags;
49
50	/*
51	 * Values maintained solely to make this a better-behaved file
52	 * descriptor for fstat() to run on.
53	 *
54	 * XXX: dubious
55	 */
56	struct timespec	ks_atime;
57	struct timespec	ks_mtime;
58	struct timespec	ks_ctime;
59	struct timespec	ks_birthtime;
60
61	struct label	*ks_label;	/* MAC label */
62	const char	*ks_path;
63};
64
65#define	KS_ANONYMOUS	0x0001		/* Anonymous (unnamed) semaphore. */
66#define	KS_DEAD		0x0002		/* No new waiters allowed. */
67
68#endif /* !_POSIX4_KSEM_H_ */
69