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 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * These routines are based on the standard UNIX stdio popen/pclose
32 * routines. This version takes an argv[][] argument instead of a string
33 * to be passed to the shell. The routine execvp() is used to call the
34 * program, hence the name popenvp() and the argument types.
35 *
36 * This routine avoids an extra shell completely, along with not having
37 * to worry about quoting conventions in strings that have spaces,
38 * quotes, etc.
39 */
40
41 #include <sys/types.h>
42 #include "libmail.h"
43 #include <signal.h>
44 #include <unistd.h>
45 #include <wait.h>
46
47 pid_t
systemvp(char * file,char ** argv,int resetid)48 systemvp(char *file, char **argv, int resetid)
49 {
50 int status;
51 pid_t pid, w;
52 void (*istat)(int), (*qstat)(int);
53
54 if ((pid = fork()) == 0) {
55 if (resetid) {
56 (void) setgid(getgid());
57 (void) setuid(getuid());
58 }
59 (void) execvp(file, argv);
60 _exit(127);
61 }
62 istat = signal(SIGINT, SIG_IGN);
63 qstat = signal(SIGQUIT, SIG_IGN);
64 do {
65 w = wait(&status);
66 } while (w != pid && w != (pid_t)-1);
67 (void) signal(SIGINT, istat);
68 (void) signal(SIGQUIT, qstat);
69 return ((w == (pid_t)-1)? w: (pid_t)status);
70 }
71