1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2019 Federico Bonfiglio <fedebonfi95@gmail.com>
4 * Copyright (c) Linux Test Project, 2019-2022
5 */
6
7/*\
8 * [Description]
9 *
10 * Test ioctl_ns with NS_GET_OWNER_UID request.
11 *
12 * Calls ioctl for a UTS namespace, which isn't a user namespace.
13 * This should make the call fail with EINVAL.
14 *
15 */
16#define _GNU_SOURCE
17
18#include <errno.h>
19#include "tst_test.h"
20#include "lapi/ioctl_ns.h"
21
22static void setup(void)
23{
24	int exists = access("/proc/self/ns/uts", F_OK);
25
26	if (exists < 0)
27		tst_res(TCONF, "namespace not available");
28}
29
30static void run(void)
31{
32	int fd, owner_fd;
33
34	fd = SAFE_OPEN("/proc/self/ns/uts", O_RDONLY);
35	uid_t uid;
36
37	owner_fd = ioctl(fd, NS_GET_OWNER_UID, &uid);
38	if (owner_fd == -1) {
39		if (errno == ENOTTY)
40			tst_brk(TCONF, "ioctl(NS_GET_OWNER_UID) not implemented");
41
42		if (errno == EINVAL)
43			tst_res(TPASS, "NS_GET_OWNER_UID fails, UTS namespace");
44		else
45			tst_res(TFAIL | TERRNO, "unexpected ioctl error");
46	} else {
47		tst_res(TFAIL, "call to ioctl succeded");
48	}
49	SAFE_CLOSE(fd);
50}
51
52static struct tst_test test = {
53	.test_all = run,
54	.min_kver = "4.11",
55	.setup = setup
56};
57