/* $OpenBSD: wwspawn.c,v 1.8 2003/06/03 02:56:23 millert Exp $ */ /* $NetBSD: wwspawn.c,v 1.4 1995/12/21 08:39:57 mycroft Exp $ */ /* * Copyright (c) 1983, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Edward Wang at The University of California, Berkeley. * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. */ #ifndef lint #if 0 static char sccsid[] = "@(#)wwspawn.c 8.1 (Berkeley) 6/6/93"; #else static char rcsid[] = "$OpenBSD: wwspawn.c,v 1.8 2003/06/03 02:56:23 millert Exp $"; #endif #endif /* not lint */ #include "ww.h" #include /* * There is a dead lock with vfork and closing of pseudo-ports. * So we have to be sneaky about error reporting. */ wwspawn(wp, file, argv) struct ww *wp; char *file; char **argv; { pid_t pid; pid_t ret; char erred = 0; sigset_t sigset, osigset; sigemptyset(&sigset); sigaddset(&sigset, SIGCHLD); sigprocmask(SIG_BLOCK, &sigset, &osigset); switch (pid = vfork()) { case -1: wwerrno = WWE_SYS; ret = -1; break; case 0: if (wwenviron(wp) >= 0) execvp(file, argv); erred = 1; _exit(1); default: if (erred) { wwerrno = WWE_SYS; ret = -1; } else { wp->ww_pid = pid; wp->ww_state = WWS_HASPROC; ret = pid; } } sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); if (wp->ww_socket >= 0) { (void) close(wp->ww_socket); wp->ww_socket = -1; } return ret; }