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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
* Copyright (c) Linux Test Project, 2002-2023
* Author: Nirmala Devi Dhanasekar <nirmala.devi@wipro.com>
*/
/*\
* [Description]
*
* Verify that umount(2) returns -1 and sets errno to EPERM if the user
* is not the super-user.
*/
#include <pwd.h>
#include <sys/mount.h>
#include "tst_test.h"
#define MNTPOINT "mntpoint"
static int mount_flag;
static void verify_umount(void)
{
TST_EXP_FAIL(umount(MNTPOINT), EPERM);
}
static void setup(void)
{
struct passwd *pw;
SAFE_MKDIR(MNTPOINT, 0775);
SAFE_MOUNT(tst_device->dev, MNTPOINT, tst_device->fs_type, 0, NULL);
mount_flag = 1;
pw = SAFE_GETPWNAM("nobody");
SAFE_SETEUID(pw->pw_uid);
}
static void cleanup(void)
{
if (seteuid(0))
tst_res(TWARN | TERRNO, "seteuid(0) Failed");
if (mount_flag)
tst_umount(MNTPOINT);
}
static struct tst_test test = {
.needs_root = 1,
.format_device = 1,
.setup = setup,
.cleanup = cleanup,
.test_all = verify_umount,
};
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