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52 lines
1.0 KiB
52 lines
1.0 KiB
7 months ago
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2002
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*/
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/*
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* Make sure that writing to the read end of a pipe and reading from
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* the write end of a pipe both fail.
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*/
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#include <unistd.h>
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#include <errno.h>
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#include "tst_test.h"
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static int fd[2];
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static void verify_pipe(void)
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{
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char buf[2];
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TEST(pipe(fd));
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if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "pipe() failed unexpectedly");
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return;
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}
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TEST(write(fd[0], "A", 1));
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if (TST_RET == -1 && errno == EBADF) {
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tst_res(TPASS | TTERRNO, "expected failure writing "
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"to read end of pipe");
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} else {
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tst_res(TFAIL | TTERRNO, "unexpected failure writing "
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"to read end of pipe");
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}
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TEST(read(fd[1], buf, 1));
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if (TST_RET == -1 && errno == EBADF) {
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tst_res(TPASS | TTERRNO, "expected failure reading "
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"from write end of pipe");
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} else {
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tst_res(TFAIL | TTERRNO, "unexpected failure reading "
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"from write end of pipe");
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}
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SAFE_CLOSE(fd[0]);
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SAFE_CLOSE(fd[1]);
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}
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static struct tst_test test = {
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.test_all = verify_pipe,
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};
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