52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
// 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,
|
|
};
|