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 : munlock02
20 *
21 * EXECUTED BY : root / superuser
22 *
23 * TEST TITLE : Test for checking basic error conditions for
24 * munlock(2)
25 *
26 * TEST CASE TOTAL : 2
27 *
28 * AUTHOR : Nirmala Devi Dhanasekar <nirmala.devi@wipro.com>
29 *
30 * SIGNALS
31 * Uses SIGUSR1 to pause before test if option set.
32 * (See the parse_opts(3) man page).
33 *
34 * DESCRIPTION
35 * Check for basic errors returned by munlock(2) system call.
36 *
37 * Verify that munlock(2) returns -1 and sets errno to
38 *
39 * 1) ENOMEM - Some of the specified address range does not correspond to
40 * mapped pages in the address space of the process.
41 *
42 * Setup:
43 * Setup signal handling.
44 * Pause for SIGUSR1 if option specified.
45 *
46 * Test:
47 * Loop if the proper options are given.
48 * Do necessary setup for each test.
49 * Execute system call
50 * Check return code, if system call failed (return=-1)
51 * Log the errno and Issue a FAIL message.
52 * Otherwise, Issue a PASS message.
53 *
54 * Cleanup:
55 * Print errno log and/or timing stats if options given
56 *
57 * USAGE: <for command-line>
58 * munlock02 [-c n] [-e] [-i n] [-I x] [-p x] [-t]
59 * where, -c n : Run n copies concurrently
60 * -e : Turn on errno logging.
61 * -h : Show this help screen
62 * -i n : Execute test n times.
63 * -I x : Execute test for x seconds.
64 * -p : Pause for SIGUSR1 before starting
65 * -P x : Pause for x seconds between iterations.
66 * -t : Turn on syscall timing.
67 *
68 * RESTRICTIONS
69 * Test must run as root.
70 *****************************************************************************/
71 #include <errno.h>
72 #include <unistd.h>
73 #include <sys/mman.h>
74 #include <pwd.h>
75 #include "test.h"
76
77 void setup();
78 void cleanup();
79
80 char *TCID = "munlock02";
81 int TST_TOTAL = 1;
82
83 #define LEN 1024
84
85 void *addr1;
86
87 struct test_case_t {
88 void *addr;
89 int len;
90 int error;
91 char *edesc;
92 } TC[] = {
93 {
94 NULL, 0, ENOMEM, "address range out of address space"},};
95
96 #if !defined(UCLINUX)
97
main(int ac,char ** av)98 int main(int ac, char **av)
99 {
100 int lc, i;
101
102 tst_parse_opts(ac, av, NULL, NULL);
103
104 setup();
105
106 /* check looping state */
107 for (lc = 0; TEST_LOOPING(lc); lc++) {
108
109 tst_count = 0;
110 for (i = 0; i < TST_TOTAL; i++) {
111 #ifdef __ia64__
112 TC[0].len = 8 * getpagesize();
113 #endif
114 TEST(munlock(TC[i].addr, TC[i].len));
115
116 /* check return code */
117 if (TEST_RETURN == -1) {
118 if (TEST_ERRNO != TC[i].error)
119 tst_brkm(TFAIL, cleanup,
120 "munlock() Failed with wrong "
121 "errno, expected errno=%s, "
122 "got errno=%d : %s",
123 TC[i].edesc, TEST_ERRNO,
124 strerror(TEST_ERRNO));
125 else
126 tst_resm(TPASS,
127 "expected failure - errno "
128 "= %d : %s",
129 TEST_ERRNO,
130 strerror(TEST_ERRNO));
131 } else {
132 tst_brkm(TFAIL, cleanup,
133 "munlock() Failed, expected "
134 "return value=-1, got %ld",
135 TEST_RETURN);
136 }
137 }
138 }
139
140 /* cleanup and exit */
141 cleanup();
142
143 tst_exit();
144 }
145
146 /* setup() - performs all ONE TIME setup for this test. */
147
setup(void)148 void setup(void)
149 {
150
151 char *address;
152
153 tst_sig(FORK, DEF_HANDLER, cleanup);
154
155 TC[0].len = 8 * getpagesize();
156 address = mmap(0, TC[0].len, PROT_READ | PROT_WRITE,
157 MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0);
158 if (address == MAP_FAILED)
159 tst_brkm(TFAIL, cleanup, "mmap_failed");
160 memset(address, 0x20, TC[0].len);
161 TEST(mlock(address, TC[0].len));
162
163 /* check return code */
164 if (TEST_RETURN == -1) {
165 tst_brkm(TFAIL | TTERRNO, cleanup,
166 "mlock(%p, %d) Failed with return=%ld", address,
167 TC[0].len, TEST_RETURN);
168 }
169 TC[0].addr = address;
170 /*
171 * unmap part of the area, to create the condition for ENOMEM
172 */
173 address += 2 * getpagesize();
174 munmap(address, 4 * getpagesize());
175
176 TEST_PAUSE;
177
178 return;
179 }
180
181 #else
182
main(void)183 int main(void)
184 {
185 tst_resm(TINFO, "test is not available on uClinux");
186 tst_exit();
187 }
188
189 #endif /* if !defined(UCLINUX) */
190
191 /*
192 * cleanup() - performs all ONE TIME cleanup for this test at
193 * completion or premature exit.
194 */
cleanup(void)195 void cleanup(void)
196 {
197 return;
198 }
199