1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * NAME
22 * write02.c
23 *
24 * DESCRIPTION
25 * Basic functionality test: does the return from write match the count
26 * of the number of bytes written.
27 *
28 *
29 * ALGORITHM
30 * Create a file and write some bytes out to it.
31 * Check the return count against the number returned.
32 *
33 * USAGE: <for command-line>
34 * write02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
35 * where, -c n : Run n copies concurrently.
36 * -e : Turn on errno logging.
37 * -i n : Execute test n times.
38 * -I x : Execute test for x seconds.
39 * -P x : Pause for x seconds between iterations.
40 * -t : Turn on syscall timing.
41 *
42 * History
43 * 07/2001 John George
44 * -Ported
45 *
46 * Restrictions
47 * None
48 */
49 #include <sys/types.h>
50 #include <sys/stat.h>
51 #include <fcntl.h>
52 #include <errno.h>
53 #include <stdio.h>
54 #include "test.h"
55
56 char *TCID = "write02";
57 int TST_TOTAL = 1;
58
59 void cleanup(void);
60 void setup(void);
61
62 char pfiln[40] = "";
63
main(int argc,char ** argv)64 int main(int argc, char **argv)
65 {
66 int lc;
67
68 int cwrite;
69 int fild;
70 int iws;
71 int badcount = 0;
72 char pwbuf[BUFSIZ + 1];
73
74 tst_parse_opts(argc, argv, NULL, NULL);
75
76 setup(); /* global setup for test */
77
78 /* The following loop checks looping state if -i option given */
79 for (lc = 0; TEST_LOOPING(lc); lc++) {
80
81 /* reset tst_count in case we are looping */
82 tst_count = 0;
83
84 //block1:
85 tst_resm(TINFO, "Block 1: test to see write() returns proper "
86 "write count");
87
88 for (iws = 0; iws < BUFSIZ; iws++) {
89 pwbuf[iws] = 'A' + (iws % 26);
90 }
91 pwbuf[BUFSIZ] = '\n';
92
93 if ((fild = creat(pfiln, 0777)) == -1) {
94 tst_brkm(TBROK, cleanup, "Can't creat Xwrit");
95 }
96 for (iws = BUFSIZ; iws > 0; iws--) {
97 if ((cwrite = write(fild, pwbuf, iws)) != iws) {
98 badcount++;
99 tst_resm(TINFO, "bad write count");
100 }
101 }
102 if (badcount != 0) {
103 tst_resm(TFAIL, "write() FAILED to return proper cnt");
104 } else {
105 tst_resm(TPASS, "write() PASSED");
106 }
107 tst_resm(TINFO, "block 1 passed");
108 close(fild);
109 }
110 cleanup();
111 tst_exit();
112 }
113
114 /*
115 * setup() - performs all ONE TIME setup for this test
116 */
setup(void)117 void setup(void)
118 {
119
120 tst_sig(FORK, DEF_HANDLER, cleanup);
121
122 umask(0);
123
124 /* Pause if that option was specified
125 * TEST_PAUSE contains the code to fork the test with the -i option.
126 * You want to make sure you do this before you create your temporary
127 * directory.
128 */
129 TEST_PAUSE;
130
131 tst_tmpdir();
132
133 sprintf(pfiln, "write1.%d", getpid());
134 }
135
136 /*
137 * cleanup() - performs all ONE TIME cleanup for this test at completion or
138 * premature exit.
139 */
cleanup(void)140 void cleanup(void)
141 {
142
143 unlink(pfiln);
144
145 tst_rmdir();
146 }
147