NetBSD/sys/compat/darwin/darwin_thread.c

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/* $NetBSD: darwin_thread.c,v 1.17 2009/01/11 02:45:47 christos Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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.
*/
#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: darwin_thread.c,v 1.17 2009/01/11 02:45:47 christos Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/signal.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/syscallargs.h>
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#include <compat/sys/signal.h>
#include <compat/mach/mach_types.h>
#include <compat/mach/mach_exec.h>
#include <compat/mach/mach_vm.h>
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#include <compat/darwin/darwin_types.h>
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#include <compat/darwin/darwin_audit.h>
#include <compat/darwin/darwin_signal.h>
#include <compat/darwin/darwin_syscallargs.h>
#include <machine/darwin_machdep.h>
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/*
* darwin_fork_child_return() sets the return values as expected by Darwin
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* userland: libSystem stub expects the child pid to be in retval[0] for
* the parent as well as the child.
*/
int
darwin_sys_fork(struct lwp *l, const void *v, register_t *retval)
{
int error;
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if ((error = fork1(l, 0, SIGCHLD, NULL, 0,
darwin_fork_child_return, NULL, retval, NULL)) != 0)
return error;
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return 0;
}
int
darwin_sys_vfork(struct lwp *l, const void *v, register_t *retval)
{
int error;
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if ((error = fork1(l, FORK_PPWAIT, SIGCHLD, NULL, 0,
darwin_fork_child_return, NULL, retval, NULL)) != 0)
return error;
return 0;
}
int
darwin_sys_pthread_exit(struct lwp *l, const struct darwin_sys_pthread_exit_args *uap, register_t *retval)
{
/* {
syscallarg(void *) value_ptr;
} */
struct sys_exit_args cup;
struct mach_emuldata *med;
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struct proc *p = l->l_proc;
int error;
/* Get the status or use zero if it is not possible */
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if ((error = copyin(SCARG(uap, value_ptr), &SCARG(&cup, rval),
sizeof(void *))) != 0)
SCARG(&cup, rval) = 0;
/* Avoid destroying the parent's rights in mach_e_proc_exit */
med = (struct mach_emuldata *)p->p_emuldata;
LIST_INIT(&med->med_right);
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return sys_exit(l, &cup, retval);
}