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 40 struct 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