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	: munlock01
20  *
21  *    EXECUTED BY	: root / superuser
22  *
23  *    TEST TITLE	: Basic test for munlock(2)
24  *
25  *    TEST CASE TOTAL	: 4
26  *
27  *    AUTHOR		: Nirmala Devi Dhanasekar <nirmala.devi@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  *	This is a Phase I test for the munlock(2) system call.
35  *	It is intended to provide a limited exposure of the system call.
36  *
37  * 	Setup:
38  *	  Setup signal handling.
39  *	  Pause for SIGUSR1 if option specified.
40  *
41  * 	Test:
42  *	 Loop if the proper options are given.
43  *	  Execute system call
44  *	  Check return code, if system call failed (return=-1)
45  *		Log the errno and Issue a FAIL message.
46  *	  Otherwise, Issue a PASS message.
47  *
48  * 	Cleanup:
49  * 	  Print errno log and/or timing stats if options given
50  *
51  * USAGE:  <for command-line>
52  *  munlock01 [-c n] [-e] [-i n] [-I x] [-p x] [-t]
53  *		where,		-c n : Run n copies concurrently
54  *				-e   : Turn on errno logging.
55  *				-h   : Show this help screen
56  *				-i n : Execute test n times.
57  *				-I x : Execute test for x seconds.
58  *				-p   : Pause for SIGUSR1 before starting
59  *				-P x : Pause for x seconds between iterations.
60  *				-t   : Turn on syscall timing.
61  *
62  * RESTRICTIONS
63  * Must be root/superuser to run it.
64  *****************************************************************************/
65 
66 #include <errno.h>
67 #include <unistd.h>
68 #include <sys/mman.h>
69 #include "test.h"
70 
71 void setup();
72 void setup1(int);
73 void cleanup();
74 
75 char *TCID = "munlock01";
76 int TST_TOTAL = 4;
77 
78 void *addr1;
79 
80 struct test_case_t {
81 	void **addr;
82 	int len;
83 	void (*setupfunc) ();
84 } TC[] = {
85 	{
86 	&addr1, 1, setup1}, {
87 	&addr1, 1024, setup1}, {
88 	&addr1, 1024 * 1024, setup1}, {
89 	&addr1, 1024 * 1024 * 10, setup1}
90 };
91 
92 int main(int ac, char **av)
93 {
94 	int lc, i;
95 
96 	tst_parse_opts(ac, av, NULL, NULL);
97 
98 	setup();
99 
100 	/* check looping state */
101 	for (lc = 0; TEST_LOOPING(lc); lc++) {
102 
103 		tst_count = 0;
104 
105 		for (i = 0; i < TST_TOTAL; i++) {
106 
107 			if (TC[i].setupfunc != NULL)
108 				TC[i].setupfunc(i);
109 
110 			TEST(munlock(*(TC[i].addr), TC[i].len));
111 
112 			/* check return code */
113 			if (TEST_RETURN == -1) {
114 				tst_resm(TFAIL | TTERRNO,
115 					 "mlock(%p, %d) Failed with "
116 					 "return=%ld", TC[i].addr, TC[i].len,
117 					 TEST_RETURN);
118 			} else {
119 				tst_resm(TPASS, "test %d passed length = %d",
120 					 i, TC[i].len);
121 			}
122 		}
123 	}
124 
125 	/* cleanup and exit */
126 	cleanup();
127 
128 	tst_exit();
129 }
130 
131 void setup1(int i)
132 {
133 	addr1 = malloc(TC[i].len);
134 	if (addr1 == NULL)
135 		tst_brkm(TFAIL, cleanup, "malloc failed");
136 	TEST(mlock(*(TC[i].addr), TC[i].len));
137 
138 	/* check return code */
139 	if (TEST_RETURN == -1) {
140 		tst_brkm(TFAIL | TTERRNO, cleanup,
141 			 "mlock(%p, %d) Failed with return=%ld", TC[i].addr,
142 			 TC[i].len, TEST_RETURN);
143 	}
144 }
145 
146 /* setup() - performs all ONE TIME setup for this test. */
147 void setup(void)
148 {
149 	tst_require_root();
150 
151 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
152 
153 	TEST_PAUSE;
154 }
155 
156 /*
157  * cleanup() - performs all ONE TIME cleanup for this test at
158  *		completion or premature exit.
159  */
160 void cleanup(void)
161 {
162 }
163