/* $NetBSD: freebsd_fork.c,v 1.9 2018/04/16 14:51:59 kamil Exp $ */

/* $NetBSD: freebsd_fork.c,v 1.9 2018/04/16 14:51:59 kamil Exp $ */

/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* 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>
__KERNEL_RCSID(0, "$NetBSD: freebsd_fork.c,v 1.9 2018/04/16 14:51:59 kamil Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/uio.h>
#include <sys/signal.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>

#include <compat/sys/signal.h>
#include <compat/sys/signalvar.h>

#include <compat/freebsd/freebsd_syscallargs.h>
#include <compat/freebsd/freebsd_fork.h>

#include <compat/freebsd/freebsd_machdep.h>

/*
* rfork()
*/
int
freebsd_sys_rfork(struct lwp *l, const struct freebsd_sys_rfork_args *uap, register_t *retval)
{
/* {
syscallargs(int) flags;
} */
int flags;

flags = 0;

if ((SCARG(uap, flags)
& (FREEBSD_RFFDG | FREEBSD_RFCFDG))
== (FREEBSD_RFFDG | FREEBSD_RFCFDG))
return (EINVAL);

if ((SCARG(uap, flags) & FREEBSD_RFPROC) == 0)
return (EINVAL);

if (SCARG(uap, flags) & FREEBSD_RFNOWAIT)
flags |= FORK_NOWAIT;
if (SCARG(uap, flags) & FREEBSD_RFMEM)
flags |= FORK_SHAREVM;
if (SCARG(uap, flags) & FREEBSD_RFSIGSHARE)
flags |= FORK_SHARESIGS;

if (SCARG(uap, flags) & FREEBSD_RFCFDG)
flags |= FORK_CLEANFILES;
else if ((SCARG(uap, flags) & FREEBSD_RFFDG) == 0)
flags |= FORK_SHAREFILES;

return (fork1(l, flags,
SCARG(uap, flags) & FREEBSD_RFLINUXTHPN ? SIGUSR1 : SIGCHLD,
NULL, 0, NULL, NULL, retval));
}