1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <errno.h> 30 #include <unistd.h> 31 #include <sys/lx_misc.h> 32 33 /* 34 * fork() and vfork() 35 * 36 * These cannot be pass thru system calls because we need libc to do its own 37 * initialization or else bad things will happen (i.e. ending up with a bad 38 * schedctl page). On Linux, there is no such thing as forkall(), so we use 39 * fork1() here. 40 */ 41 int 42 lx_fork(void) 43 { 44 int ret = fork1(); 45 46 if (ret == 0 && lx_is_rpm) 47 (void) sleep(lx_rpm_delay); 48 49 return (ret == -1 ? -errno : ret); 50 } 51 52 /* 53 * For vfork(), we have a serious problem because the child is not allowed to 54 * return from the current frame because it will corrupt the parent's stack. 55 * Since the semantics of vfork() are rather ill-defined (other than "it's 56 * faster than fork"), we should theoretically be safe by falling back to 57 * fork1(). 58 */ 59 int 60 lx_vfork(void) 61 { 62 int ret = fork1(); 63 64 return (ret == -1 ? -errno : ret); 65 }