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 */
17 /**************************************************************************
18 *
19 * TEST IDENTIFIER : munlockall02
20 *
21 * EXECUTED BY : root / superuser
22 *
23 * TEST TITLE : test for EPERM error value when run as non superuser
24 *
25 * TEST CASE TOTAL : 1
26 *
27 * AUTHOR : sowmya adiga<sowmya.adiga@wipro.com>
28 *
29 * SIGNALS
30 * Uses SIGUSR1 to pause before test if option set.
31 * (See the parse_opts(3) man page).
32 *
33 * DESCRIPTION
34 * Verify munlockall(2) returns -1 and sets errno to EPERM
35 * if the effective userid of the caller is not super-user.
36 * $
37 * Setup:
38 * Setup signal handling.
39 * Pause for SIGUSR1 if option specified.
40 * Change effective user id to "nobody" user
41 * $
42 * Test:
43 * Loop if the proper options are given.
44 * Execute system call
45 * Check return code, if system call failed (return=-1) &&
46 * (errno set == expected errno)
47 * Issue sys call pass with expected return value and errno.
48 * otherwise,
49 * Issue sys call fails with unexpected errno.
50 *
51 *
52 * Cleanup:
53 * change effective user id to root
54 * Print errno log and/or timing stats if options given
55 *
56 * USAGE: <for command-line>
57 * munlockall02 [-c n] [-e] [-i n] [-I x] [-p x] [-t]
58 * where, -c n : Run n copies concurrently
59 * -e : Turn on errno logging.
60 * -h : Show this help screen
61 * -i n : Execute test n times.
62 * -I x : Execute test for x seconds.
63 * -p : Pause for SIGUSR1 before starting
64 * -P x : Pause for x seconds between iterations.
65 * t : Turn on syscall timing.
66 *
67 *
68 *****************************************************************************/
69 #include <errno.h>
70 #include <pwd.h>
71 #include <sys/mman.h>
72 #include "test.h"
73
74 void setup();
75 void cleanup();
76
77 char *TCID = "munlockall02";
78 int TST_TOTAL = 1;
79
80 static char nobody_uid[] = "nobody";
81 struct passwd *ltpuser;
82
83 #if !defined(UCLINUX)
84
main(int ac,char ** av)85 int main(int ac, char **av)
86 {
87 int lc;
88
89 tst_parse_opts(ac, av, NULL, NULL);
90
91 setup();
92
93 /* check looping state */
94 for (lc = 0; TEST_LOOPING(lc); lc++) {
95
96 tst_count = 0;
97
98 TEST(munlockall());
99 /* check return code */
100 if ((TEST_RETURN == -1) && (TEST_ERRNO == EPERM)) {
101 tst_resm(TPASS, "munlockall() failed"
102 " as expected for non-superuser" ":GOT EPERM");
103 } else {
104 tst_resm(TCONF, "munlockall() failed to produce "
105 "expected errno :%d Got : %d, %s. ***Some distros, such as Red Hat Enterprise Linux, support non-superuser munlockall calls.***",
106 EPERM, TEST_ERRNO, strerror(TEST_ERRNO));
107
108 }
109 }
110
111 /* cleanup and exit */
112 cleanup();
113 tst_exit();
114
115 }
116
117 /* setup() - performs all ONE TIME setup for this test. */
setup(void)118 void setup(void)
119 {
120 tst_require_root();
121
122 tst_sig(NOFORK, DEF_HANDLER, cleanup);
123
124 /* switch to nobody user */
125 if ((ltpuser = getpwnam(nobody_uid)) == NULL) {
126 tst_brkm(TBROK, NULL, "\"nobody\"user not present");
127 }
128
129 if (seteuid(ltpuser->pw_uid) == -1) {
130 tst_brkm(TBROK, NULL, "seteuid failed to "
131 "to set the effective uid to %d", ltpuser->pw_uid);
132 }
133
134 TEST_PAUSE;
135 }
136
137 #else
138
main(void)139 int main(void)
140 {
141 tst_resm(TINFO, "test is not available on uClinux");
142 tst_exit();
143 }
144
145 #endif /* if !defined(UCLINUX) */
146
147 /*
148 * cleanup() - performs all ONE TIME cleanup for this test at
149 * completion or premature exit.
150 */
cleanup(void)151 void cleanup(void)
152 {
153 if (seteuid(0) == -1) {
154 tst_resm(TWARN, "seteuid failed to "
155 "to set the effective uid to root");
156 perror("setuid");
157 }
158
159 }
160