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/* $OpenBSD: atfork.c,v 1.3 2017/08/15 06:38:41 guenther Exp $ */ |
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/* |
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* Copyright (c) 2008 Kurt Miller <kurt@openbsd.org> |
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* Copyright (c) 2008 Philip Guenther <guenther@openbsd.org> |
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* Copyright (c) 2003 Daniel Eischen <deischen@freebsd.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Neither the name of the author nor the names of any co-contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* $FreeBSD: /repoman/r/ncvs/src/lib/libc_r/uthread/uthread_atfork.c,v 1.1 2004/12/10 03:36:45 grog Exp $ |
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*/ |
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#include <errno.h> |
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#include <pthread.h> |
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#include <stdlib.h> |
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#include "thread_private.h" |
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#include "atfork.h" |
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int _thread_atfork(void (*_prepare)(void), void (*_parent)(void), |
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void (*_child)(void), void *_dso); |
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PROTO_NORMAL(_thread_atfork); |
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int |
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_thread_atfork(void (*prepare)(void), void (*parent)(void), |
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void (*child)(void), void *dso) |
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{ |
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struct atfork_fn *af; |
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if ((af = malloc(sizeof *af)) == NULL) |
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return (ENOMEM); |
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af->fn_prepare = prepare; |
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af->fn_parent = parent; |
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af->fn_child = child; |
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af->fn_dso = dso; |
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_ATFORK_LOCK(); |
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TAILQ_INSERT_TAIL(&_atfork_list, af, fn_next); |
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_ATFORK_UNLOCK(); |
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return (0); |
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} |
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DEF_STRONG(_thread_atfork); |
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/* |
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* Copy of pthread_atfork() used by libc and anything staticly linked |
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* into the executable. This passes NULL for the dso, so the callbacks |
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* are never removed by dlclose() |
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*/ |
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int |
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pthread_atfork(void (*prep)(void), void (*parent)(void), void (*child)(void)) |
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{ |
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return (_thread_atfork(prep, parent, child, NULL)); |
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} |