systemvp.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1999, by Sun Microsystems, Inc.
* All rights reserved.
*/
/*
* These routines are based on the standard UNIX stdio popen/pclose
* routines. This version takes an argv[][] argument instead of a string
* to be passed to the shell. The routine execvp() is used to call the
* program, hence the name popenvp() and the argument types.
*
* This routine avoids an extra shell completely, along with not having
* to worry about quoting conventions in strings that have spaces,
* quotes, etc.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include "synonyms.h"
#include <sys/types.h>
#include "libmail.h"
#include <signal.h>
#include <unistd.h>
#include <wait.h>
pid_t
systemvp(char *file, char **argv, int resetid)
{
int status;
pid_t pid, w;
void (*istat)(int), (*qstat)(int);
if ((pid = fork()) == 0) {
if (resetid) {
(void) setgid(getgid());
(void) setuid(getuid());
}
(void) execvp(file, argv);
_exit(127);
}
istat = signal(SIGINT, SIG_IGN);
qstat = signal(SIGQUIT, SIG_IGN);
do
w = wait(&status);
while (w != pid && w != (pid_t)-1);
(void) signal(SIGINT, istat);
(void) signal(SIGQUIT, qstat);
return ((w == (pid_t)-1)? w: (pid_t)status);
}