/*-
* 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.
*
* $FreeBSD$
*/
#ifndef _POSIX4_KSEM_H_
#define _POSIX4_KSEM_H_
#if !defined(_KERNEL) && !defined(_WANT_FILE)
#error "no user-servicable 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. */
#ifdef _KERNEL
extern void (*ksem_info)(struct ksem *ks, char *path, size_t size,
uint32_t *value);
#endif
#endif /* !_POSIX4_KSEM_H_ */
