1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2016 Joyent, Inc.
14 */
15
16 /*
17 * Regression test for 7076 where doing a putenv() call without an '=' sign
18 * may lead to a segmentation fault when doing a getenv() depending on the
19 * circumstances of the environment's layout. Verify putenv() mimics
20 * unsetenv().
21 */
22
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <errno.h>
26 #include <string.h>
27 #include <sys/debug.h>
28
29 int
main(void)30 main(void)
31 {
32 if (putenv("FOO=bar") != 0) {
33 fprintf(stderr, "failed to put FOO into the environment: %s\n",
34 strerror(errno));
35 return (1);
36 }
37
38 if (getenv("FOO") == NULL) {
39 fprintf(stderr, "failed to retrieve FOO from the "
40 "environment!\n");
41 return (1);
42 }
43
44 VERIFY0(unsetenv("FOO"));
45
46 if (getenv("FOO") != NULL) {
47 fprintf(stderr, "Somehow retrieved FOO from the "
48 "environment after unsetenv()!\n");
49 return (1);
50 }
51
52 if (putenv("FOO=bar") != 0) {
53 fprintf(stderr, "failed to put FOO into the environment: %s\n",
54 strerror(errno));
55 return (1);
56 }
57
58 if (getenv("FOO") == NULL) {
59 fprintf(stderr, "failed to retrieve FOO from the "
60 "environment!\n");
61 return (1);
62 }
63
64 VERIFY0(putenv("FOO"));
65
66 if (getenv("FOO") != NULL) {
67 fprintf(stderr, "Somehow retrieved FOO from the "
68 "environment after putenv()!\n");
69 return (1);
70 }
71
72 return (0);
73 }
74