1 /* $NetBSD: freebsd_fork.c,v 1.5 2005/12/11 12:20:02 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: freebsd_fork.c,v 1.5 2005/12/11 12:20:02 christos Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/proc.h> 42 #include <sys/errno.h> 43 #include <sys/uio.h> 44 #include <sys/signal.h> 45 #include <sys/mount.h> 46 #include <sys/syscallargs.h> 47 48 #include <compat/sys/signal.h> 49 #include <compat/sys/signalvar.h> 50 51 #include <compat/freebsd/freebsd_syscallargs.h> 52 #include <compat/freebsd/freebsd_fork.h> 53 54 #include <machine/freebsd_machdep.h> 55 56 /* 57 * rfork() 58 */ 59 int 60 freebsd_sys_rfork(struct lwp *l, void *v, register_t *retval) 61 { 62 struct freebsd_sys_rfork_args /* { 63 syscallargs(int) flags; 64 } */ *uap = v; 65 int flags; 66 67 flags = 0; 68 69 if ((SCARG(uap, flags) 70 & (FREEBSD_RFFDG | FREEBSD_RFCFDG)) 71 == (FREEBSD_RFFDG | FREEBSD_RFCFDG)) 72 return (EINVAL); 73 74 if ((SCARG(uap, flags) & FREEBSD_RFPROC) == 0) 75 return (EINVAL); 76 77 if (SCARG(uap, flags) & FREEBSD_RFNOWAIT) 78 flags |= FORK_NOWAIT; 79 if (SCARG(uap, flags) & FREEBSD_RFMEM) 80 flags |= FORK_SHAREVM; 81 if (SCARG(uap, flags) & FREEBSD_RFSIGSHARE) 82 flags |= FORK_SHARESIGS; 83 84 if (SCARG(uap, flags) & FREEBSD_RFCFDG) 85 flags |= FORK_CLEANFILES; 86 else if ((SCARG(uap, flags) & FREEBSD_RFFDG) == 0) 87 flags |= FORK_SHAREFILES; 88 89 return (fork1(l, flags, 90 SCARG(uap, flags) & FREEBSD_RFLINUXTHPN ? SIGUSR1 : SIGCHLD, 91 NULL, 0, NULL, NULL, retval, NULL)); 92 } 93