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/* $NetBSD: notifier.h,v 1.5 2021/12/19 11:47:08 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Taylor R. Campbell.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _LINUX_NOTIFIER_H_
#define _LINUX_NOTIFIER_H_
#include <sys/cdefs.h>
#include <sys/pslist.h>
#include <linux/spinlock.h>
/* namespace */
#define ATOMIC_INIT_NOTIFIER_HEAD linux_ATOMIC_INIT_NOTIFIER_HEAD
#define ATOMIC_CLEANUP_NOTIFIER_HEAD linux_ATOMIC_CLEANUP_NOTIFIER_HEAD
#define atomic_notifier_call_chain linux_atomic_notifier_call_chain
#define atomic_notifier_chain_register linux_atomic_notifier_chain_register
#define atomic_notifier_chain_unregister linux_atomic_notifier_chain_unregister
#define NOTIFY_DONE 0
#define NOTIFY_OK 1
struct notifier_block {
int (*notifier_call)(struct notifier_block *, unsigned long, void *);
struct pslist_entry nb_entry;
};
struct atomic_notifier_head {
spinlock_t anh_lock;
struct pslist_head anh_list;
};
void ATOMIC_INIT_NOTIFIER_HEAD(struct atomic_notifier_head *);
void ATOMIC_CLEANUP_NOTIFIER_HEAD(struct atomic_notifier_head *);
void atomic_notifier_chain_register(struct atomic_notifier_head *,
struct notifier_block *);
void atomic_notifier_chain_unregister(struct atomic_notifier_head *,
struct notifier_block *);
void atomic_notifier_call_chain(struct atomic_notifier_head *, unsigned long,
void *);
#endif /* _LINUX_NOTIFIER_H_ */
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