107 lines
1.7 KiB
C
107 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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* Ported to LTP: Wayne Boyer
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* Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* Check that poll() works for POLLOUT and POLLIN and that revents is set
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* correctly.
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*/
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/wait.h>
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#include <sys/poll.h>
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#include "tst_test.h"
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#define BUF_SIZE 512
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static int fildes[2];
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static void verify_pollout(void)
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{
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struct pollfd outfds[] = {
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{.fd = fildes[1], .events = POLLOUT},
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};
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TEST(poll(outfds, 1, -1));
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if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "poll() POLLOUT failed");
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return;
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}
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if (outfds[0].revents != POLLOUT) {
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tst_res(TFAIL | TTERRNO, "poll() failed to set POLLOUT");
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return;
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}
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tst_res(TPASS, "poll() POLLOUT");
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}
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static void verify_pollin(void)
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{
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char write_buf[] = "Testing";
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char read_buf[BUF_SIZE];
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struct pollfd infds[] = {
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{.fd = fildes[0], .events = POLLIN},
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};
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SAFE_WRITE(1, fildes[1], write_buf, sizeof(write_buf));
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TEST(poll(infds, 1, -1));
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if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "poll() POLLIN failed");
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goto end;
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}
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if (infds[0].revents != POLLIN) {
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tst_res(TFAIL, "poll() failed to set POLLIN");
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goto end;
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}
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tst_res(TPASS, "poll() POLLIN");
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end:
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SAFE_READ(1, fildes[0], read_buf, sizeof(write_buf));
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}
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void verify_poll(unsigned int n)
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{
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switch (n) {
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case 0:
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verify_pollout();
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break;
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case 1:
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verify_pollin();
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break;
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}
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}
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static void setup(void)
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{
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SAFE_PIPE(fildes);
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}
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static void cleanup(void)
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{
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if (fildes[0] > 0)
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SAFE_CLOSE(fildes[0]);
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if (fildes[1] > 0)
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SAFE_CLOSE(fildes[1]);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test = verify_poll,
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.tcnt = 2,
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};
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