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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 1999, by Sun Microsystems, Inc.
28  * All rights reserved.
29  */
30 
31 /*
32  *  These routines are based on the standard UNIX stdio popen/pclose
33  *  routines. This version takes an argv[][] argument instead of a string
34  *  to be passed to the shell. The routine execvp() is used to call the
35  *  program, hence the name popenvp() and the argument types.
36  *
37  *  This routine avoids an extra shell completely, along with not having
38  *  to worry about quoting conventions in strings that have spaces,
39  *  quotes, etc.
40  */
41 
42 #pragma ident	"%Z%%M%	%I%	%E% SMI"
43 /*LINTLIBRARY*/
44 
45 #include "synonyms.h"
46 #include <sys/types.h>
47 #include "libmail.h"
48 #include <signal.h>
49 #include <unistd.h>
50 #include <wait.h>
51 
52 pid_t
53 systemvp(char *file, char **argv, int resetid)
54 {
55 	int	status;
56 	pid_t	pid, w;
57 	void (*istat)(int), (*qstat)(int);
58 
59 	if ((pid = fork()) == 0) {
60 		if (resetid) {
61 			(void) setgid(getgid());
62 			(void) setuid(getuid());
63 		}
64 		(void) execvp(file, argv);
65 		_exit(127);
66 	}
67 	istat = signal(SIGINT, SIG_IGN);
68 	qstat = signal(SIGQUIT, SIG_IGN);
69 	do
70 		w = wait(&status);
71 	while (w != pid && w != (pid_t)-1);
72 	(void) signal(SIGINT, istat);
73 	(void) signal(SIGQUIT, qstat);
74 	return ((w == (pid_t)-1)? w: (pid_t)status);
75 }
76