xref: /openbsd-src/regress/lib/libpthread/execve/execve.c (revision a28daedfc357b214be5c701aa8ba8adb29a7f1c2)
1 /*	$OpenBSD: execve.c,v 1.4 2003/09/18 01:59:58 henning Exp $	*/
2 /*
3  * Copyright (c) 1993, 1994, 1995, 1996 by Chris Provenzano and contributors,
4  * proven@mit.edu All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. All advertising materials mentioning features or use of this software
15  *    must display the following acknowledgement:
16  *	This product includes software developed by Chris Provenzano,
17  *	the University of California, Berkeley, and contributors.
18  * 4. Neither the name of Chris Provenzano, the University, nor the names of
19  *   contributors may be used to endorse or promote products derived
20  *   from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL CHRIS PROVENZANO, THE REGENTS OR
26  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 /*
36  * Copyright (c) 1994 by Chris Provenzano, proven@athena.mit.edu
37  *
38  * Test execve() and dup2() calls.
39  */
40 
41 #include <pthread.h>
42 #include <string.h>
43 #include <unistd.h>
44 #include <fcntl.h>
45 #include <stdio.h>
46 #include "test.h"
47 
48 extern char **environ;
49 char *new_argv[] = {
50 	"/bin/echo",
51 	"This line should appear after the execve",
52 	NULL
53 };
54 
55 char * should_succeed = "This line should be displayed\n";
56 
57 int
58 main(int argc, char *argv[])
59 {
60 	int fd;
61 
62 	printf("This is the first message\n");
63 	if (isatty(STDOUT_FILENO)) {
64 		char *ttynm;
65 
66 		CHECKn(ttynm = ttyname(STDOUT_FILENO));
67 		printf("tty is %s\n", ttynm);
68 		CHECKe(fd = open(ttynm, O_RDWR));
69 	} else {
70 		printf("IGNORED: stdout is not a tty: this test needs a tty\n");
71 		SUCCEED;
72 	}
73 
74 	CHECKn(printf("This output is necessary to set the stdout fd to NONBLOCKING\n"));
75 
76 	/* do a dup2 */
77 	CHECKe(dup2(fd, STDOUT_FILENO));
78 	CHECKe(write(STDOUT_FILENO, should_succeed,
79 	    (size_t)strlen(should_succeed)));
80 	CHECKe(execve(new_argv[0], new_argv, environ));
81 	DIE(errno, "execve %s", new_argv[0]);
82 }
83