66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
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* Author: Nirmala Devi Dhanasekar <nirmala.devi@wipro.com>
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*
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* Verify that umount(2) returns -1 and sets errno to EPERM if the user
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* is not the super-user.
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*/
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#include <errno.h>
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#include <pwd.h>
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#include <sys/mount.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "tst_test.h"
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#define MNTPOINT "mntpoint"
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static int mount_flag;
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static void verify_umount(void)
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{
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TEST(umount(MNTPOINT));
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if (TST_RET != -1) {
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tst_res(TFAIL, "umount() succeeds unexpectedly");
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return;
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}
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if (TST_ERR != EPERM) {
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tst_res(TFAIL | TTERRNO, "umount() should fail with EPERM");
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return;
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}
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tst_res(TPASS | TTERRNO, "umount() fails as expected");
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}
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static void setup(void)
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{
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struct passwd *pw;
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SAFE_MKDIR(MNTPOINT, 0775);
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SAFE_MOUNT(tst_device->dev, MNTPOINT, tst_device->fs_type, 0, NULL);
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mount_flag = 1;
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pw = SAFE_GETPWNAM("nobody");
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SAFE_SETEUID(pw->pw_uid);
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}
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static void cleanup(void)
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{
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if (seteuid(0))
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tst_res(TWARN | TERRNO, "seteuid(0) Failed");
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if (mount_flag)
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tst_umount(MNTPOINT);
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}
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static struct tst_test test = {
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.needs_root = 1,
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.format_device = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test_all = verify_umount,
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};
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