1 /*
2 * Copyright (C) Bull S.A. 2001
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * NAME
22 * chroot04.c
23 *
24 * DESCRIPTION
25 * Testcase to check that chroot sets errno to EACCES.
26 *
27 * ALGORITHM
28 * As a non-root user attempt to perform chroot() to a directory. The
29 * chroot() call should fail with EACCES
30 *
31 * USAGE: <for command-line>
32 * chroot04 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
33 * where, -c n : Run n copies concurrently.
34 * -e : Turn on errno logging.
35 * -i n : Execute test n times.
36 * -I x : Execute test for x seconds.
37 * -P x : Pause for x seconds between iterations.
38 * -t : Turn on syscall timing.
39 *
40 * HISTORY
41 * 04/2002 Ported by Jacky Malcles
42 *
43 * RESTRICTIONS
44 * Must be run as non-root user.
45 */
46
47 #include <stdio.h>
48 #include <errno.h>
49 #include <sys/stat.h>
50 #include "test.h"
51 #include "safe_macros.h"
52 #include <pwd.h>
53
54 char *TCID = "chroot04";
55 int TST_TOTAL = 1;
56
57 #define TEST_TMPDIR "chroot04_tmpdir"
58
59 char nobody_uid[] = "nobody";
60 struct passwd *ltpuser;
61
62 void setup(void);
63 void cleanup(void);
64
main(int ac,char ** av)65 int main(int ac, char **av)
66 {
67 int lc;
68
69 tst_parse_opts(ac, av, NULL, NULL);
70
71 setup();
72
73 /* Check for looping state if -i option is given */
74 for (lc = 0; TEST_LOOPING(lc); lc++) {
75
76 /* reset tst_count in case we are looping */
77 tst_count = 0;
78
79 TEST(chroot(TEST_TMPDIR));
80
81 if (TEST_RETURN != -1)
82 tst_resm(TFAIL, "call succeeded unexpectedly");
83 else if (TEST_ERRNO == EACCES)
84 tst_resm(TPASS, "got EACCESS as expected");
85 else
86 tst_resm(TFAIL | TTERRNO,
87 "did not get EACCES as expected");
88
89 }
90 cleanup();
91
92 tst_exit();
93
94 }
95
96 /*
97 * setup() - performs all ONE TIME setup for this test.
98 */
setup(void)99 void setup(void)
100 {
101 tst_sig(NOFORK, DEF_HANDLER, cleanup);
102
103 tst_require_root();
104
105 TEST_PAUSE;
106
107 /* make a temporary directory and cd to it */
108 tst_tmpdir();
109
110 /*
111 * create a temporary directory
112 */
113 if (mkdir(TEST_TMPDIR, 0222) != 0) {
114 tst_resm(TBROK, "mkdir(%s) failed", TEST_TMPDIR);
115 }
116
117 ltpuser = getpwnam(nobody_uid);
118 SAFE_SETEUID(cleanup, ltpuser->pw_uid);
119
120 }
121
122 /*
123 * cleanup() - performs all ONE TIME cleanup for this test at
124 * completion or premature exit.
125 */
cleanup(void)126 void cleanup(void)
127 {
128 /* reset the process ID to the saved ID (root) */
129 SAFE_SETUID(NULL, 0);
130 if (rmdir(TEST_TMPDIR) != 0) {
131 tst_brkm(TFAIL | TERRNO, NULL, "rmdir(%s) failed", TEST_TMPDIR);
132 }
133
134 /* delete the test directory created in setup() */
135 tst_rmdir();
136
137 }
138