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 2022 Marcel Telka <marcel@telka.sk>
14 */
15
16 /*
17 * Test for fchmodat(AT_SYMLINK_NOFOLLOW)
18 */
19
20 #include <sys/param.h>
21 #include <string.h>
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <fcntl.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <unistd.h>
28
29 int
main(void)30 main(void)
31 {
32 int ret = 0;
33
34 char template[MAXPATHLEN];
35 char *path;
36 char file[MAXPATHLEN];
37 char link[MAXPATHLEN];
38
39 /* prepare template for temporary directory */
40 if (strlcpy(template, "/tmp/XXXXXX", sizeof (template))
41 >= sizeof (template)) {
42 (void) printf("FAIL: Template copy failed\n");
43 exit(EXIT_FAILURE);
44 }
45
46 /* create temporary directory */
47 if ((path = mkdtemp(template)) == NULL) {
48 (void) printf("FAIL: Temporary directory creation failed\n");
49 exit(EXIT_FAILURE);
50 }
51
52 /* format file and link paths */
53 (void) snprintf(file, sizeof (file), "%s/file", path);
54 (void) snprintf(link, sizeof (link), "%s/link", path);
55
56 /* create the file */
57 int fd = open(file, O_WRONLY | O_CREAT, 0644);
58 if (fd < 0) {
59 (void) printf("FAIL: File %s creation failed\n", file);
60 (void) rmdir(path);
61 exit(EXIT_FAILURE);
62 }
63 (void) close(fd);
64
65 /* create symlink */
66 if (symlink("file", link) != 0) {
67 (void) printf("FAIL: Symlink %s creation failed\n", link);
68 (void) unlink(file);
69 (void) rmdir(path);
70 exit(EXIT_FAILURE);
71 }
72
73 /* test fchmodat(AT_SYMLINK_NOFOLLOW) for symlink */
74 if (fchmodat(AT_FDCWD, link, 0666, AT_SYMLINK_NOFOLLOW) == 0) {
75 (void) printf("FAIL: fchmodat(AT_SYMLINK_NOFOLLOW) "
76 "unexpectedly succeeded for symlink\n");
77 ret = EXIT_FAILURE;
78 }
79 /* test fchmodat(AT_SYMLINK_NOFOLLOW) for regular file */
80 if (fchmodat(AT_FDCWD, file, 0666, AT_SYMLINK_NOFOLLOW) != 0) {
81 (void) printf("FAIL: fchmodat(AT_SYMLINK_NOFOLLOW) failed for "
82 "regular file\n");
83 ret = EXIT_FAILURE;
84 }
85
86 /* cleanup */
87 (void) unlink(link);
88 (void) unlink(file);
89 (void) rmdir(path);
90
91 return (ret);
92 }
93