/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2002 Alfred Perlstein <alfred@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _POSIX4_KSEM_H_
#define _POSIX4_KSEM_H_

#if !defined(_KERNEL) && !defined(_WANT_FILE)
#error "no user-serviceable parts inside"
#endif

#include <sys/condvar.h>

struct ksem {
        int             ks_ref;         /* number of references */
        mode_t          ks_mode;        /* protection bits */
        uid_t           ks_uid;         /* creator uid */
        gid_t           ks_gid;         /* creator gid */
        unsigned int    ks_value;       /* current value */
        struct cv       ks_cv;          /* waiters sleep here */
        int             ks_waiters;     /* number of waiters */
        int             ks_flags;

        /*
         * Values maintained solely to make this a better-behaved file
         * descriptor for fstat() to run on.
         *
         * XXX: dubious
         */
        struct timespec ks_atime;
        struct timespec ks_mtime;
        struct timespec ks_ctime;
        struct timespec ks_birthtime;

        struct label    *ks_label;      /* MAC label */
        const char      *ks_path;
};

#define KS_ANONYMOUS    0x0001          /* Anonymous (unnamed) semaphore. */
#define KS_DEAD         0x0002          /* No new waiters allowed. */

#endif /* !_POSIX4_KSEM_H_ */