1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * 07/2001 Ported by Wayne Boyer
5 * Copyright (C) 2021 SUSE LLC <mdoucha@suse.cz>
6 */
7
8 /*\
9 * [Description]
10 *
11 * Check that renaming/moving a file from directory where the current user does
12 * not have write permissions fails with EACCES.
13 */
14
15 #include <stdio.h>
16 #include <stdlib.h>
17 #include <sys/types.h>
18
19 #include "tst_test.h"
20 #include "tst_safe_file_ops.h"
21 #include "tst_uid.h"
22
23 #define SRCDIR "srcdir"
24 #define DESTDIR "destdir"
25 #define SRCFILE SRCDIR "/file"
26 #define DESTFILE DESTDIR "/file"
27 #define PERMS 0700
28
29 static uid_t orig_uid, test_users[2];
30 static char *tmpdir;
31
setup(void)32 static void setup(void)
33 {
34 umask(0);
35 orig_uid = getuid();
36 tst_get_uids(test_users, 0, 2);
37 tmpdir = tst_get_tmpdir();
38 }
39
run(void)40 static void run(void)
41 {
42 gid_t curgid = getgid();
43
44 SAFE_MKDIR(SRCDIR, PERMS);
45 SAFE_TOUCH(SRCFILE, PERMS, NULL);
46 SAFE_CHOWN(SRCDIR, test_users[0], curgid);
47 SAFE_CHOWN(SRCFILE, test_users[0], curgid);
48
49 SAFE_SETEUID(test_users[1]);
50 SAFE_MKDIR(DESTDIR, PERMS);
51 SAFE_TOUCH(DESTFILE, PERMS, NULL);
52
53 TST_EXP_FAIL(rename(SRCFILE, DESTFILE), EACCES, "rename()");
54
55 /* Cleanup between loops */
56 SAFE_SETEUID(orig_uid);
57 tst_purge_dir(tmpdir);
58 }
59
cleanup(void)60 static void cleanup(void)
61 {
62 free(tmpdir);
63 }
64
65 static struct tst_test test = {
66 .test_all = run,
67 .setup = setup,
68 .cleanup = cleanup,
69 .needs_root = 1,
70 .needs_tmpdir = 1,
71 };
72