1 /*
2 * Copyright (c) International Business Machines Corp., 2001
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Ported by John George
19 */
20
21 /*
22 * Test that EPERM is set when setreuid is given an invalid user id.
23 */
24
25 #include <wait.h>
26 #include <limits.h>
27 #include <signal.h>
28 #include <errno.h>
29 #include <unistd.h>
30 #include <pwd.h>
31 #include <sys/param.h>
32 #include <sys/types.h>
33 #include <sys/stat.h>
34
35 #include "test.h"
36 #include "compat_16.h"
37
38 #define INVAL_USER (USHRT_MAX-2)
39
40 TCID_DEFINE(setreuid06);
41 int TST_TOTAL = 1;
42
43 static struct passwd *ltpuser;
44
45 static void setup(void);
46 static void cleanup(void);
47
main(int argc,char ** argv)48 int main(int argc, char **argv)
49 {
50 int lc;
51
52 tst_parse_opts(argc, argv, NULL, NULL);
53
54 setup();
55
56 for (lc = 0; TEST_LOOPING(lc); lc++) {
57 tst_count = 0;
58
59 TEST(SETREUID(cleanup, -1, INVAL_USER));
60 if (TEST_RETURN != -1) {
61 tst_resm(TFAIL, "%s did not fail as expected", TCID);
62 } else if (TEST_ERRNO == EPERM) {
63 tst_resm(TPASS, "setreuid set errno to EPERM as "
64 "expected");
65 } else {
66 tst_resm(TFAIL, "setreuid FAILED, expected 1 but "
67 "returned %d", TEST_ERRNO);
68 }
69
70 }
71 cleanup();
72 tst_exit();
73 }
74
setup(void)75 static void setup(void)
76 {
77 tst_require_root();
78
79 tst_sig(FORK, DEF_HANDLER, cleanup);
80
81 umask(0);
82
83 ltpuser = getpwnam("nobody");
84 if (ltpuser == NULL)
85 tst_brkm(TBROK, NULL, "nobody must be a valid user.");
86
87 if (setuid(ltpuser->pw_uid) == -1)
88 tst_brkm(TBROK | TERRNO, NULL, "setuid failed to "
89 "to set the effective uid to %d", ltpuser->pw_uid);
90
91 TEST_PAUSE;
92 }
93
cleanup(void)94 static void cleanup(void)
95 {
96 }
97