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