1 /*
2 * Copyright (c) International Business Machines Corp., 2001
3 *
4 * This program is free software; you can rdistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program.
16 */
17
18 /*
19 * Basic test for pipe().
20 */
21
22 #include <errno.h>
23 #include <string.h>
24 #include "tst_test.h"
25
26 static int fds[2];
27
verify_pipe(void)28 static void verify_pipe(void)
29 {
30 int rd_size, wr_size;
31 char wrbuf[] = "abcdefghijklmnopqrstuvwxyz";
32 char rdbuf[128];
33
34 memset(rdbuf, 0, sizeof(rdbuf));
35
36 TEST(pipe(fds));
37
38 if (TEST_RETURN == -1) {
39 tst_res(TFAIL | TTERRNO, "pipe()");
40 return;
41 }
42
43 wr_size = SAFE_WRITE(1, fds[1], wrbuf, sizeof(wrbuf));
44 rd_size = SAFE_READ(0, fds[0], rdbuf, sizeof(rdbuf));
45
46 if (rd_size != wr_size) {
47 tst_res(TFAIL, "read() returned %d, expected %d",
48 rd_size, wr_size);
49 return;
50 }
51
52 if ((strncmp(rdbuf, wrbuf, wr_size)) != 0) {
53 tst_res(TFAIL, "Wrong data were read back");
54 return;
55 }
56
57 SAFE_CLOSE(fds[0]);
58 SAFE_CLOSE(fds[1]);
59
60 tst_res(TPASS, "pipe() functionality is correct");
61 }
62
63 static struct tst_test test = {
64 .tid = "pipe01",
65 .test_all = verify_pipe,
66 };
67