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