1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Copyright (c) International Business Machines Corp., 2001
3 */
4
5 /*
6 * Verify that user cannot create a directory inside directory owned by another
7 * user with restrictive permissions and that the errno is set to EACCESS.
8 */
9
10 #include <errno.h>
11 #include <sys/types.h>
12 #include <pwd.h>
13 #include "tst_test.h"
14 #include "tst_uid.h"
15
16 #define TESTDIR "testdir"
17 #define TESTSUBDIR "testdir/testdir"
18
verify_mkdir(void)19 static void verify_mkdir(void)
20 {
21 if (mkdir(TESTSUBDIR, 0777) != -1) {
22 tst_res(TFAIL, "mkdir(%s, %#o) succeeded unexpectedly",
23 TESTSUBDIR, 0777);
24 return;
25 }
26
27 if (errno != EACCES) {
28 tst_res(TFAIL | TERRNO, "Expected EACCES got");
29 return;
30 }
31
32 tst_res(TPASS | TERRNO, "mkdir() failed expectedly");
33 }
34
setup(void)35 static void setup(void)
36 {
37 uid_t test_users[2];
38
39 tst_get_uids(test_users, 0, 2);
40
41 SAFE_MKDIR(TESTDIR, 0700);
42 SAFE_CHOWN(TESTDIR, test_users[0], getgid());
43
44 SAFE_SETREUID(test_users[1], test_users[1]);
45 }
46
47 static struct tst_test test = {
48 .test_all = verify_mkdir,
49 .needs_tmpdir = 1,
50 .needs_root = 1,
51 .setup = setup,
52 };
53