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 : flock02
20 *
21 * EXECUTED BY : anyone
22 *
23 * TEST TITLE : Error condition 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 * This test verifies that
35 * 1) flock(2) returns -1 and sets error number to EBADF
36 * if the file descriptor is invalid.
37 * 2) flock(2) returns -1 and sets error number to EINVAL
38 * if the argument operation does not include LOCK_SH,LOCK_EX,LOCK_UN.$
39 * 3) flock(2) returns -1 and sets error number to EINVAL
40 * if an invalid combination of locking modes is used i.e LOCK_SH with LOCK_EX
41 *
42 * Setup:
43 * Setup signal handling.
44 * Pause for SIGUSR1 if option specified.
45 * Create a temporary directory and chdir to it.
46 * Create a temporary file
47 *
48 * Test:
49 * Loop if proper options are given.
50 * Execute system call
51 * Check return code,
52 * if system call failed (return == -1) and errno == expected_errno
53 * Issue system call fails with expected return value and error number
54 * else
55 * Issue system call failed to produce expected error.
56 *
57 * Cleanup:
58 * Print errno log and/or timing stats if options given
59 * Deletes temporary directory.
60 *
61 * USAGE: <for command-line>
62 * flock02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
63 * where, -c n : Run n copies concurrently.
64 * -f : Turn off functional testing
65 * -e : Turn on errno logging.
66 * -h : Show help screen $
67 * -i n : Execute test n times.
68 * -I x : Execute test for x seconds.
69 * -p : Pause for SIGUSR1 before starting
70 * -P x : Pause for x seconds between iterations.
71 * -t : Turn on syscall timing.
72 *
73 ****************************************************************/
74
75 #include <sys/types.h>
76 #include <sys/file.h>
77 #include <sys/wait.h>
78 #include <fcntl.h>
79 #include <errno.h>
80 #include <stdio.h>
81 #include "test.h"
82
83 void setup(void);
84 void cleanup(void);
85
86 char *TCID = "flock02";
87 int TST_TOTAL = 3;
88 char filename[100];
89 int fd;
90
main(int argc,char ** argv)91 int main(int argc, char **argv)
92 {
93 int lc;
94
95 tst_parse_opts(argc, argv, NULL, NULL);
96
97 setup();
98
99 for (lc = 0; TEST_LOOPING(lc); lc++) {
100
101 tst_count = 0;
102
103 TEST(flock(-1, LOCK_SH));
104
105 if (TEST_RETURN == -1 && TEST_ERRNO == EBADF)
106 tst_resm(TPASS, "flock failed as expected with EBADF");
107 else if (TEST_RETURN == 0)
108 tst_resm(TFAIL, "flock succeeded unexpectedly");
109 else
110 tst_resm(TFAIL | TTERRNO, "flock failed unexpectedly");
111
112 /* Test system call with invalid argument */
113 TEST(flock(fd, LOCK_NB));
114
115 if (TEST_RETURN == -1 && TEST_ERRNO == EINVAL)
116 tst_resm(TPASS, "flock failed as expected with EINVAL");
117 else if (TEST_RETURN == 0)
118 tst_resm(TFAIL, "flock succeeded unexpectedly");
119 else
120 tst_resm(TFAIL | TTERRNO, "flock failed unexpectedly");
121
122 /* Test system call with invalid combination of arguments */
123 TEST(flock(fd, LOCK_SH | LOCK_EX));
124
125 if (TEST_RETURN == -1 && TEST_ERRNO == EINVAL) {
126 tst_resm(TPASS, "flock failed as expected with EINVAL");
127 continue; /*next loop for MTKERNEL */
128 } else if (TEST_RETURN == 0)
129 tst_resm(TFAIL, "flock succeeded unexpectedly");
130 else
131 tst_resm(TFAIL | TTERRNO, "flock failed unexpectedly");
132
133 }
134
135 close(fd);
136
137 cleanup();
138
139 tst_exit();
140
141 }
142
setup(void)143 void setup(void)
144 {
145
146 tst_sig(FORK, DEF_HANDLER, cleanup);
147
148 TEST_PAUSE;
149
150 tst_tmpdir();
151
152 sprintf(filename, "flock02.%d", getpid());
153
154 fd = open(filename, O_CREAT | O_TRUNC | O_RDWR, 0666);
155 if (fd < 0)
156 tst_brkm(TFAIL | TERRNO, cleanup, "creat failed");
157 }
158
cleanup(void)159 void cleanup(void)
160 {
161 unlink(filename);
162 tst_rmdir();
163
164 }
165