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 <[email protected]>
6 */
7
8 /*\
9 * [Description]
10 *
11 * Verify that system call utime() fails with
12 *
13 * - EACCES when times argument is NULL and user does not have rights to modify
14 * the file.
15 * - ENOENT when specified file does not exist.
16 * - EPERM when times argument is not NULL and user does not have rights to
17 * modify the file.
18 * - EROFS when the path resides on a read-only filesystem.
19 */
20
21 #include <pwd.h>
22 #include <utime.h>
23
24 #include "tst_test.h"
25
26 #define TEMP_FILE "tmp_file"
27 #define MNT_POINT "mntpoint"
28 #define FILE_MODE 0644
29 #define TEST_USERNAME "nobody"
30
31 static const struct utimbuf times;
32
33 static struct tcase {
34 char *pathname;
35 int exp_errno;
36 const struct utimbuf *utimbuf;
37 char *err_desc;
38 } tcases[] = {
39 {TEMP_FILE, EACCES, NULL, "No write access"},
40 {"", ENOENT, NULL, "File not exist"},
41 {TEMP_FILE, EPERM, ×, "Not file owner"},
42 {MNT_POINT, EROFS, NULL, "Read-only filesystem"}
43 };
44
45
setup(void)46 static void setup(void)
47 {
48 struct passwd *pw;
49
50 SAFE_TOUCH(TEMP_FILE, FILE_MODE, NULL);
51
52 pw = SAFE_GETPWNAM(TEST_USERNAME);
53 tst_res(TINFO, "Switching effective user ID to user: %s", pw->pw_name);
54 SAFE_SETEUID(pw->pw_uid);
55 }
56
run(unsigned int i)57 static void run(unsigned int i)
58 {
59 struct tcase *tc = &tcases[i];
60
61 TST_EXP_FAIL(utime(tc->pathname, tc->utimbuf),
62 tc->exp_errno, "%s", tc->err_desc);
63 }
64
65 static struct tst_test test = {
66 .setup = setup,
67 .test = run,
68 .tcnt = ARRAY_SIZE(tcases),
69 .needs_root = 1,
70 .needs_tmpdir = 1,
71 .mntpoint = MNT_POINT,
72 .needs_rofs = 1
73 };
74