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/* $OpenBSD: wwspawn.c,v 1.11 2006/01/02 16:20:56 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 1.11 2006/01/02 16:20:56 millert Exp $";
#endif
#endif /* not lint */
#include "ww.h"
#include <signal.h>
#include <unistd.h>
/*
* 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;
}
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