| /* |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can rdistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. |
| */ |
| |
| /* |
| * Basic test for pipe(). |
| */ |
| |
| #include <errno.h> |
| #include <string.h> |
| #include "tst_test.h" |
| |
| static int fds[2]; |
| |
| static void verify_pipe(void) |
| { |
| int rd_size, wr_size; |
| char wrbuf[] = "abcdefghijklmnopqrstuvwxyz"; |
| char rdbuf[128]; |
| |
| memset(rdbuf, 0, sizeof(rdbuf)); |
| |
| TEST(pipe(fds)); |
| |
| if (TST_RET == -1) { |
| tst_res(TFAIL | TTERRNO, "pipe()"); |
| return; |
| } |
| |
| wr_size = SAFE_WRITE(1, fds[1], wrbuf, sizeof(wrbuf)); |
| rd_size = SAFE_READ(0, fds[0], rdbuf, sizeof(rdbuf)); |
| |
| if (rd_size != wr_size) { |
| tst_res(TFAIL, "read() returned %d, expected %d", |
| rd_size, wr_size); |
| return; |
| } |
| |
| if ((strncmp(rdbuf, wrbuf, wr_size)) != 0) { |
| tst_res(TFAIL, "Wrong data were read back"); |
| return; |
| } |
| |
| SAFE_CLOSE(fds[0]); |
| SAFE_CLOSE(fds[1]); |
| |
| tst_res(TPASS, "pipe() functionality is correct"); |
| } |
| |
| static struct tst_test test = { |
| .test_all = verify_pipe, |
| }; |