1/*
2 * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * You should have received a copy of the GNU General Public License along
13 * with this program; if not, write the Free Software Foundation, Inc.,
14 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15 *
16 * DESCRIPTION
17 *	Verify that mount(2) returns -1 and sets errno to  EPERM if the user
18 *	is not the super-user.
19 */
20
21#include <errno.h>
22#include <sys/mount.h>
23#include <sys/types.h>
24#include <sys/stat.h>
25#include <fcntl.h>
26#include <pwd.h>
27#include "test.h"
28#include "safe_macros.h"
29
30static void setup(void);
31static void cleanup(void);
32
33char *TCID = "mount04";
34
35#define DIR_MODE	S_IRWXU | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP
36
37static char *mntpoint = "mntpoint";
38static const char *fs_type;
39static const char *device;
40
41int TST_TOTAL = 1;
42
43static void verify_mount(void)
44{
45
46	TEST(mount(device, mntpoint, fs_type, 0, NULL));
47
48	if (TEST_RETURN == -1) {
49		if (TEST_ERRNO == EPERM)
50			tst_resm(TPASS | TTERRNO, "mount() failed expectedly");
51		else
52			tst_resm(TFAIL | TTERRNO,
53			         "mount() was expected to fail with EPERM");
54		return;
55	}
56
57	if (TEST_RETURN == 0) {
58		tst_resm(TFAIL, "mount() succeeded unexpectedly");
59		if (tst_umount(mntpoint))
60			tst_brkm(TBROK, cleanup, "umount() failed");
61		return;
62	}
63
64	tst_resm(TFAIL | TTERRNO, "mount() returned %li", TEST_RETURN);
65}
66
67int main(int ac, char **av)
68{
69	int lc;
70
71	tst_parse_opts(ac, av, NULL, NULL);
72
73	setup();
74
75	for (lc = 0; TEST_LOOPING(lc); lc++) {
76		tst_count = 0;
77		verify_mount();
78	}
79
80	cleanup();
81	tst_exit();
82}
83
84static void setup(void)
85{
86	char nobody_uid[] = "nobody";
87	struct passwd *ltpuser;
88
89	tst_sig(FORK, DEF_HANDLER, cleanup);
90
91	tst_require_root();
92
93	tst_tmpdir();
94
95	fs_type = tst_dev_fs_type();
96	device = tst_acquire_device(cleanup);
97
98	if (!device)
99		tst_brkm(TCONF, cleanup, "Failed to obtain block device");
100
101	tst_mkfs(cleanup, device, fs_type, NULL, NULL);
102
103	ltpuser = SAFE_GETPWNAM(cleanup, nobody_uid);
104	SAFE_SETEUID(cleanup, ltpuser->pw_uid);
105	SAFE_MKDIR(cleanup, mntpoint, DIR_MODE);
106
107	TEST_PAUSE;
108}
109
110static void cleanup(void)
111{
112	if (seteuid(0))
113		tst_resm(TWARN | TERRNO, "seteuid(0) failed");
114
115	if (device)
116		tst_release_device(device);
117
118	tst_rmdir();
119}
120