182657471SMarkus Pfeiffer /*
282657471SMarkus Pfeiffer * Copyright (c) 2013 Larisa Grigore <larisagrigore@gmail.com>
382657471SMarkus Pfeiffer *
482657471SMarkus Pfeiffer * Redistribution and use in source and binary forms, with or without
582657471SMarkus Pfeiffer * modification, are permitted provided that the following conditions
682657471SMarkus Pfeiffer * are met:
782657471SMarkus Pfeiffer * 1. Redistributions of source code must retain the above copyright
882657471SMarkus Pfeiffer * notice, this list of conditions and the following disclaimer.
982657471SMarkus Pfeiffer * 2. Redistributions in binary form must reproduce the above copyright
1082657471SMarkus Pfeiffer * notice, this list of conditions and the following disclaimer in the
1182657471SMarkus Pfeiffer * documentation and/or other materials provided with the distribution.
1282657471SMarkus Pfeiffer * 3. All advertising materials mentioning features or use of this software
1382657471SMarkus Pfeiffer * must display the following acknowledgement:
1482657471SMarkus Pfeiffer * This product includes software developed by Adam Glass and Charles
1582657471SMarkus Pfeiffer * Hannum.
1682657471SMarkus Pfeiffer * 4. The names of the authors may not be used to endorse or promote products
1782657471SMarkus Pfeiffer * derived from this software without specific prior written permission.
1882657471SMarkus Pfeiffer *
1982657471SMarkus Pfeiffer * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
2082657471SMarkus Pfeiffer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2182657471SMarkus Pfeiffer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2282657471SMarkus Pfeiffer * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
2382657471SMarkus Pfeiffer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
2482657471SMarkus Pfeiffer * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2582657471SMarkus Pfeiffer * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2682657471SMarkus Pfeiffer * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2782657471SMarkus Pfeiffer * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
2882657471SMarkus Pfeiffer * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2982657471SMarkus Pfeiffer */
3082657471SMarkus Pfeiffer
3182657471SMarkus Pfeiffer #include <sys/types.h>
3282657471SMarkus Pfeiffer #include <sys/syscall.h>
3382657471SMarkus Pfeiffer #include <unistd.h>
3482657471SMarkus Pfeiffer
35a32e3ba6SSascha Wildner int __fork(void);
36a32e3ba6SSascha Wildner
37*ecac59fdSSascha Wildner void (*cb_prepare)(void) = NULL;
38*ecac59fdSSascha Wildner void (*cb_parent)(void) = NULL;
39*ecac59fdSSascha Wildner void (*cb_child)(void) = NULL;
4082657471SMarkus Pfeiffer
4182657471SMarkus Pfeiffer int
__fork(void)42790693b1SSascha Wildner __fork(void)
4382657471SMarkus Pfeiffer {
4482657471SMarkus Pfeiffer int ret;
4582657471SMarkus Pfeiffer
4682657471SMarkus Pfeiffer if (cb_prepare)
4782657471SMarkus Pfeiffer cb_prepare();
4882657471SMarkus Pfeiffer
4982657471SMarkus Pfeiffer if ((ret = __syscall(SYS_fork)) == 0) {
5082657471SMarkus Pfeiffer if (cb_child)
5182657471SMarkus Pfeiffer cb_child();
5282657471SMarkus Pfeiffer } else {
5382657471SMarkus Pfeiffer if (cb_parent)
5482657471SMarkus Pfeiffer cb_parent();
5582657471SMarkus Pfeiffer }
5682657471SMarkus Pfeiffer return (ret);
5782657471SMarkus Pfeiffer }
5882657471SMarkus Pfeiffer __weak_reference(__fork, fork);
59