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 <sys/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 "safe_macros.h"
37 #include "compat_16.h"
38
39 #define INVAL_USER (USHRT_MAX-2)
40
41 TCID_DEFINE(setreuid06);
42 int TST_TOTAL = 1;
43
44 static struct passwd *ltpuser;
45
46 static void setup(void);
47 static void cleanup(void);
48
main(int argc,char ** argv)49 int main(int argc, char **argv)
50 {
51 int lc;
52
53 tst_parse_opts(argc, argv, NULL, NULL);
54
55 setup();
56
57 for (lc = 0; TEST_LOOPING(lc); lc++) {
58 tst_count = 0;
59
60 TEST(SETREUID(cleanup, -1, INVAL_USER));
61 if (TEST_RETURN != -1) {
62 tst_resm(TFAIL, "%s did not fail as expected", TCID);
63 } else if (TEST_ERRNO == EPERM) {
64 tst_resm(TPASS, "setreuid set errno to EPERM as "
65 "expected");
66 } else {
67 tst_resm(TFAIL, "setreuid FAILED, expected 1 but "
68 "returned %d", TEST_ERRNO);
69 }
70
71 }
72 cleanup();
73 tst_exit();
74 }
75
setup(void)76 static void setup(void)
77 {
78 tst_require_root();
79
80 tst_sig(FORK, DEF_HANDLER, cleanup);
81
82 umask(0);
83
84 ltpuser = getpwnam("nobody");
85 if (ltpuser == NULL)
86 tst_brkm(TBROK, NULL, "nobody must be a valid user.");
87
88 SAFE_SETUID(NULL, ltpuser->pw_uid);
89
90 TEST_PAUSE;
91 }
92
cleanup(void)93 static void cleanup(void)
94 {
95 }
96