1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2002
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 /* Ported from SPIE, section2/iosuite/stream4.c, by Airong Zhang */
21
22 /*======================================================================
23 =================== TESTPLAN SEGMENT ===================
24 >KEYS: < fwrite() fread()
25 >WHAT: < 1) Ensure fwrite appends data to stream.
26 < 2) Ensure fread and fwrite return values are valid.
27 >HOW: < 1) Open a file, write to it, and then check it.
28 < 2) Fwrite a know quanity, check return value.
29 < Fread a know quanity, check return value.
30 >BUGS: <
31 ======================================================================*/
32
33 #include <stdio.h>
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <sys/types.h>
37 #include <sys/stat.h>
38 #include "test.h"
39
40 char *TCID = "stream04";
41 int TST_TOTAL = 1;
42 int local_flag;
43
44 #define PASSED 1
45 #define FAILED 0
46
47 char progname[] = "stream04()";
48 char tempfile1[40] = "";
49 long ftell();
50
51 /* XXX: add setup and cleanup */
52
53 /*--------------------------------------------------------------------*/
main(int ac,char * av[])54 int main(int ac, char *av[])
55 {
56 FILE *stream;
57 char *junk = "abcdefghijklmnopqrstuvwxyz";
58 char *inbuf;
59 int ret;
60
61 int lc;
62
63 /*
64 * parse standard options
65 */
66 tst_parse_opts(ac, av, NULL, NULL);
67 tst_tmpdir();
68 for (lc = 0; TEST_LOOPING(lc); lc++) {
69
70 local_flag = PASSED;
71
72 sprintf(tempfile1, "stream04.%d", getpid());
73 /*--------------------------------------------------------------------*/
74 //block0:
75 if ((stream = fopen(tempfile1, "a+")) == NULL) {
76 tst_brkm(TFAIL | TERRNO, tst_rmdir, "fopen(%s) a+ failed",
77 tempfile1);
78 }
79 /* write something and check */
80 if ((ret =
81 fwrite(junk, sizeof(*junk), strlen(junk), stream)) == 0) {
82 tst_brkm(TFAIL, tst_rmdir, "fwrite failed: %s",
83 strerror(errno));
84 }
85
86 if ((size_t) ret != strlen(junk)) {
87 tst_resm(TFAIL,
88 "strlen(junk) = %zi != return value from fwrite = %zi",
89 strlen(junk), ret);
90 local_flag = FAILED;
91 }
92
93 fclose(stream);
94 if ((stream = fopen(tempfile1, "r+")) == NULL) {
95 tst_brkm(TFAIL, tst_rmdir, "fopen(%s) r+ failed: %s", tempfile1,
96 strerror(errno));
97 }
98 if ((inbuf = malloc(strlen(junk))) == 0) {
99 tst_brkm(TBROK, tst_rmdir, "test failed because of malloc: %s",
100 strerror(errno));
101 }
102 if ((ret =
103 fread(inbuf, sizeof(*junk), strlen(junk), stream)) == 0) {
104 tst_brkm(TFAIL, tst_rmdir, "fread failed: %s",
105 strerror(errno));
106 }
107 if ((size_t) ret != strlen(junk)) {
108 tst_resm(TFAIL,
109 "strlen(junk) = %zi != return value from fread = %zi",
110 strlen(junk), ret);
111 local_flag = FAILED;
112 }
113 fclose(stream);
114 if (local_flag == PASSED) {
115 tst_resm(TPASS, "Test passed.");
116 } else {
117 tst_resm(TFAIL, "Test failed.");
118 }
119 /*--------------------------------------------------------------------*/
120 unlink(tempfile1);
121 } /* end for */
122 tst_rmdir();
123 tst_exit();
124 }
125