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 : flock01
20 *
21 * EXECUTED BY : anyone
22 *
23 * TEST TITLE : Basic test for flock(2)
24 *
25 * TEST CASE TOTAL : 3
26 *
27 * AUTHOR : Vatsal Avasthi <vatsal.avasthi@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 * Test to verify flock(2) succeeds with all kind of locks.
35 * Intends to provide a limited exposure of system call.
36 * $
37 * Setup:
38 * Setup signal handling.
39 * Pause for SIGUSR1 if option specified.
40 * Create a temporary directory and chdir to it.
41 * Create a temporary file
42 *
43 * Test:
44 * Loop if proper options are given.
45 * Execute system call
46 * Check return code, if system call failed (return == -1)
47 * Log the error number and issue a FAIL message
48 * otherwise issue a PASS message
49 *
50 * Cleanup:
51 * Print errno log and/or timing stats if options given
52 * Deletes temporary directory.
53 *
54 * USAGE: <for command-line>
55 * flock01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
56 * where, -c n : Run n copies concurrently.
57 * -f : Turn off functional testing
58 * -e : Turn on errno logging.
59 * -h : Show help screen $
60 * -i n : Execute test n times.
61 * -I x : Execute test for x seconds.
62 * -p : Pause for SIGUSR1 before starting
63 * -P x : Pause for x seconds between iterations.
64 * -t : Turn on syscall timing.
65 *
66 ****************************************************************/
67
68 #include <errno.h>
69 #include <stdio.h>
70 #include <sys/wait.h>
71 #include <sys/file.h>
72 #include "test.h"
73
74 void setup(void);
75 void cleanup(void);
76
77 char *TCID = "flock01";
78 int TST_TOTAL = 3;
79 char filename[100];
80 int fd;
81
82 struct test_case_t {
83 int operation;
84 char *opt;
85 } test_cases[] = {
86 { LOCK_SH, "Shared Lock" },
87 { LOCK_UN, "Unlock"},
88 { LOCK_EX, "Exclusive Lock"}
89 };
90
main(int argc,char ** argv)91 int main(int argc, char **argv)
92 {
93 int lc, i;
94
95 tst_parse_opts(argc, argv, NULL, NULL);
96
97 /* global setup */
98 setup();
99
100 /* The following loop checks looping state if -i option given */
101
102 for (lc = 0; TEST_LOOPING(lc); lc++) {
103
104 /* reset tst_count in case we are looping */
105 tst_count = 0;
106
107 for (i = 0; i < TST_TOTAL; ++i) {
108
109 /* Testing system call */
110 TEST(flock(fd, test_cases[i].operation));
111 if (TEST_RETURN == -1) {
112 tst_resm(TFAIL | TTERRNO,
113 "flock() failed to get %s",
114 test_cases[i].opt);
115 continue; /*next loop for MTKERNEL */
116 } else {
117 tst_resm(TPASS,
118 "flock() succeeded with %s",
119 test_cases[i].opt);
120 }
121
122 }
123
124 }
125
126 close(fd);
127
128 cleanup();
129
130 tst_exit();
131
132 }
133
134 /*
135 * setup()
136 * performs all ONE TIME setup for this test
137 */
setup(void)138 void setup(void)
139 {
140
141 tst_sig(FORK, DEF_HANDLER, cleanup);
142
143 /* Pause if that option was specified
144 * TEST_PAUSE contains the code to fork the test with the -i option.
145 * You want to make sure you do this before you create your temporary
146 * directory.
147 */
148 TEST_PAUSE;
149
150 /* Create a unique temporary directory and chdir() to it. */
151 tst_tmpdir();
152
153 sprintf(filename, "flock01.%d", getpid());
154
155 /* creating temporary file */
156 fd = creat(filename, 0644);
157 if (fd < 0)
158 tst_brkm(TBROK, tst_rmdir, "creating a new file failed");
159 }
160
161 /*
162 * cleanup()
163 * performs all ONE TIME cleanup for this test at
164 * completion or premature exit
165 */
cleanup(void)166 void cleanup(void)
167 {
168
169 unlink(filename);
170 tst_rmdir();
171
172 }
173