1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * 07/2001 John George
5 * Copyright (c) 2022 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com>
6 */
7
8 /*\
9 * [Description]
10 *
11 * Verify that system call utime() fails with
12 * - EACCES when times argument is NULL and user does not have rights
13 * to modify the file.
14 * - ENOENT when specified file does not exist.
15 * - EPERM when times argument is not NULL and user does not have rights
16 * to modify the file.
17 * - EROFS when the path resides on a read-only filesystem.
18 */
19
20 #include <pwd.h>
21 #include <utime.h>
22
23 #include "tst_test.h"
24
25 #define TEMP_FILE "tmp_file"
26 #define MNT_POINT "mntpoint"
27 #define FILE_MODE 0644
28 #define TEST_USERNAME "nobody"
29
30 static const struct utimbuf times;
31
32 static struct tcase {
33 char *pathname;
34 int exp_errno;
35 const struct utimbuf *utimbuf;
36 char *err_desc;
37 } tcases[] = {
38 {TEMP_FILE, EACCES, NULL, "No write access"},
39 {"", ENOENT, NULL, "File not exist"},
40 {TEMP_FILE, EPERM, ×, "Not file owner"},
41 {MNT_POINT, EROFS, NULL, "Read-only filesystem"}
42 };
43
44
setup(void)45 static void setup(void)
46 {
47 struct passwd *pw;
48
49 SAFE_TOUCH(TEMP_FILE, FILE_MODE, NULL);
50
51 pw = SAFE_GETPWNAM(TEST_USERNAME);
52 tst_res(TINFO, "Switching effective user ID to user: %s", pw->pw_name);
53 SAFE_SETEUID(pw->pw_uid);
54 }
55
run(unsigned int i)56 static void run(unsigned int i)
57 {
58 struct tcase *tc = &tcases[i];
59
60 TST_EXP_FAIL(utime(tc->pathname, tc->utimbuf),
61 tc->exp_errno, "%s", tc->err_desc);
62 }
63
64 static struct tst_test test = {
65 .setup = setup,
66 .test = run,
67 .tcnt = ARRAY_SIZE(tcases),
68 .needs_root = 1,
69 .needs_tmpdir = 1,
70 .mntpoint = MNT_POINT,
71 .needs_rofs = 1
72 };
73