// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2019 Federico Bonfiglio fedebonfi95@gmail.com
 */

/*
 * Test ioctl_ns with NS_GET_OWNER_UID request.
 *
 * Calls ioctl for a UTS namespace, which isn't a user namespace.
 * This should make the call fail with EINVAL.
 *
 */
#define _GNU_SOURCE

#include <errno.h>
#include "tst_test.h"
#include "lapi/ioctl_ns.h"

static void setup(void)
{
	int exists = access("/proc/self/ns/uts", F_OK);

	if (exists < 0)
		tst_res(TCONF, "namespace not available");
}

static void run(void)
{
	int fd, owner_fd;

	fd = SAFE_OPEN("/proc/self/ns/uts", O_RDONLY);
	uid_t uid;

	owner_fd = ioctl(fd, NS_GET_OWNER_UID, &uid);
	if (owner_fd == -1) {
		if (errno == ENOTTY) {
			tst_brk(TCONF,
			        "ioctl(NS_GET_OWNER_UID) not implemented");
		}

		if (errno == EINVAL)
			tst_res(TPASS, "NS_GET_OWNER_UID fails, UTS namespace");
		else
			tst_res(TFAIL | TERRNO, "unexpected ioctl error");
	} else {
		SAFE_CLOSE(fd);
		tst_res(TFAIL, "call to ioctl succeded");
	}
}

static struct tst_test test = {
	.test_all = run,
	.min_kver = "4.11",
	.setup = setup
};