1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Copyright (c) International Business Machines Corp., 2001
3 * Ported to LTP: Wayne Boyer
4 */
5
6/* DESCRIPTION
7 * This test will verify the mkdir(2) creates a new directory successfully and
8 * it is owned by the effective UID and GID of the process.
9 */
10
11#include <errno.h>
12#include <sys/stat.h>
13#include <sys/types.h>
14#include <unistd.h>
15#include <pwd.h>
16#include "tst_test.h"
17
18#define PERMS		0777
19#define TESTDIR		"testdir"
20
21static void verify_mkdir(void)
22{
23	struct stat buf;
24
25	TEST(mkdir(TESTDIR, PERMS));
26	if (TST_RET == -1) {
27		tst_res(TFAIL | TTERRNO, "mkdir() Failed");
28		return;
29	}
30
31	SAFE_STAT(TESTDIR, &buf);
32
33	if (buf.st_uid != geteuid()) {
34		tst_res(TFAIL, "mkdir() FAILED to set owner ID "
35			"as process's effective ID");
36		return;
37	}
38
39	if (buf.st_gid != getegid()) {
40		tst_res(TFAIL, "mkdir() failed to set group ID "
41			"as the process's group ID");
42		return;
43	}
44
45	tst_res(TPASS, "mkdir() functionality is correct");
46
47	SAFE_RMDIR(TESTDIR);
48}
49
50void setup(void)
51{
52	struct passwd *pw;
53
54	pw = SAFE_GETPWNAM("nobody");
55
56	SAFE_SETUID(pw->pw_uid);
57}
58
59static struct tst_test test = {
60	.test_all = verify_mkdir,
61	.needs_tmpdir = 1,
62	.needs_root = 1,
63	.setup = setup,
64};
65