minix/tests/lib/libc/sys/t_poll.c

393 lines
9.3 KiB
C
Raw Normal View History

/* $NetBSD: t_poll.c,v 1.3 2012/03/18 07:00:52 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matthias Scheler.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/time.h>
#include <sys/wait.h>
#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <poll.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
static int desc;
static void
child1(void)
{
struct pollfd pfd;
pfd.fd = desc;
pfd.events = POLLIN | POLLHUP | POLLOUT;
(void)poll(&pfd, 1, 2000);
(void)printf("child1 exit\n");
}
static void
child2(void)
{
struct pollfd pfd;
pfd.fd = desc;
pfd.events = POLLIN | POLLHUP | POLLOUT;
(void)sleep(1);
(void)poll(&pfd, 1, INFTIM);
(void)printf("child2 exit\n");
}
static void
child3(void)
{
struct pollfd pfd;
(void)sleep(5);
pfd.fd = desc;
pfd.events = POLLIN | POLLHUP | POLLOUT;
(void)poll(&pfd, 1, INFTIM);
(void)printf("child3 exit\n");
}
ATF_TC(poll_3way);
ATF_TC_HEAD(poll_3way, tc)
{
atf_tc_set_md_var(tc, "timeout", "15");
atf_tc_set_md_var(tc, "descr",
"Check for 3-way collision for descriptor. First child comes "
"and polls on descriptor, second child comes and polls, first "
"child times out and exits, third child comes and polls. When "
"the wakeup event happens, the two remaining children should "
"both be awaken. (kern/17517)");
}
ATF_TC_BODY(poll_3way, tc)
{
int pf[2];
int status, i;
pid_t pid;
pipe(pf);
desc = pf[0];
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
(void)close(pf[1]);
child1();
_exit(0);
/* NOTREACHED */
}
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
(void)close(pf[1]);
child2();
_exit(0);
/* NOTREACHED */
}
pid = fork();
ATF_REQUIRE( pid >= 0);
if (pid == 0) {
(void)close(pf[1]);
child3();
_exit(0);
/* NOTREACHED */
}
(void)sleep(10);
(void)printf("parent write\n");
ATF_REQUIRE(write(pf[1], "konec\n", 6) == 6);
for(i = 0; i < 3; ++i)
(void)wait(&status);
(void)printf("parent terminated\n");
}
ATF_TC(poll_basic);
ATF_TC_HEAD(poll_basic, tc)
{
atf_tc_set_md_var(tc, "timeout", "10");
atf_tc_set_md_var(tc, "descr",
"Basis functionality test for poll(2)");
}
ATF_TC_BODY(poll_basic, tc)
{
int fds[2];
struct pollfd pfds[2];
int ret;
ATF_REQUIRE_EQ(pipe(fds), 0);
pfds[0].fd = fds[0];
pfds[0].events = POLLIN;
pfds[1].fd = fds[1];
pfds[1].events = POLLOUT;
/*
* Check that we get a timeout waiting for data on the read end
* of our pipe.
*/
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = poll(&pfds[0], 1, 1), 0,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, 0, "got: %d", pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, -1, "got: %d", pfds[1].revents);
/* Check that the write end of the pipe as reported as ready. */
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = poll(&pfds[1], 1, 1), 1,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, -1, "got: %d", pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, POLLOUT, "got: %d",\
pfds[1].revents);
/* Check that only the write end of the pipe as reported as ready. */
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = poll(pfds, 2, 1), 1,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, 0, "got: %d", pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, POLLOUT, "got: %d",
pfds[1].revents);
/* Write data to our pipe. */
ATF_REQUIRE_EQ(write(fds[1], "", 1), 1);
/* Check that both ends of our pipe are reported as ready. */
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = poll(pfds, 2, 1), 2,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, POLLIN, "got: %d",
pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, POLLOUT, "got: %d",
pfds[1].revents);
ATF_REQUIRE_EQ(close(fds[0]), 0);
ATF_REQUIRE_EQ(close(fds[1]), 0);
}
ATF_TC(poll_err);
ATF_TC_HEAD(poll_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Check errors from poll(2)");
}
ATF_TC_BODY(poll_err, tc)
{
struct pollfd pfd;
int fd = 0;
pfd.fd = fd;
pfd.events = POLLIN;
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, poll((struct pollfd *)-1, 1, -1) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(EINVAL, poll(&pfd, 1, -2) == -1);
}
ATF_TC(pollts_basic);
ATF_TC_HEAD(pollts_basic, tc)
{
atf_tc_set_md_var(tc, "timeout", "10");
atf_tc_set_md_var(tc, "descr",
"Basis functionality test for pollts(2)");
}
ATF_TC_BODY(pollts_basic, tc)
{
int fds[2];
struct pollfd pfds[2];
struct timespec timeout;
int ret;
ATF_REQUIRE_EQ(pipe(fds), 0);
pfds[0].fd = fds[0];
pfds[0].events = POLLIN;
pfds[1].fd = fds[1];
pfds[1].events = POLLOUT;
/* Use a timeout of 1 second. */
timeout.tv_sec = 1;
timeout.tv_nsec = 0;
/*
* Check that we get a timeout waiting for data on the read end
* of our pipe.
*/
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = pollts(&pfds[0], 1, &timeout, NULL), 0,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, 0, "got: %d", pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, -1, "got: %d", pfds[1].revents);
/* Check that the write end of the pipe as reported as ready. */
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = pollts(&pfds[1], 1, &timeout, NULL), 1,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, -1, "got: %d", pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, POLLOUT, "got: %d",\
pfds[1].revents);
/* Check that only the write end of the pipe as reported as ready. */
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = pollts(pfds, 2, &timeout, NULL), 1,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, 0, "got: %d", pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, POLLOUT, "got: %d",
pfds[1].revents);
/* Write data to our pipe. */
ATF_REQUIRE_EQ(write(fds[1], "", 1), 1);
/* Check that both ends of our pipe are reported as ready. */
pfds[0].revents = -1;
pfds[1].revents = -1;
ATF_REQUIRE_EQ_MSG(ret = pollts(pfds, 2, &timeout, NULL), 2,
"got: %d", ret);
ATF_REQUIRE_EQ_MSG(pfds[0].revents, POLLIN, "got: %d",
pfds[0].revents);
ATF_REQUIRE_EQ_MSG(pfds[1].revents, POLLOUT, "got: %d",
pfds[1].revents);
ATF_REQUIRE_EQ(close(fds[0]), 0);
ATF_REQUIRE_EQ(close(fds[1]), 0);
}
ATF_TC(pollts_err);
ATF_TC_HEAD(pollts_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Check errors from pollts(2)");
}
ATF_TC_BODY(pollts_err, tc)
{
struct timespec timeout;
struct pollfd pfd;
int fd = 0;
pfd.fd = fd;
pfd.events = POLLIN;
timeout.tv_sec = 1;
timeout.tv_nsec = 0;
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, pollts((void *)-1, 1, &timeout, NULL) == -1);
timeout.tv_sec = -1;
timeout.tv_nsec = -1;
errno = 0;
ATF_REQUIRE_ERRNO(EINVAL, pollts(&pfd, 1, &timeout, NULL) == -1);
}
ATF_TC(pollts_sigmask);
ATF_TC_HEAD(pollts_sigmask, tc)
{
atf_tc_set_md_var(tc, "timeout", "10");
atf_tc_set_md_var(tc, "descr",
"Check that pollts(2) restores the signal mask (PR kern/44986)");
}
ATF_TC_BODY(pollts_sigmask, tc)
{
int fd;
struct pollfd pfd;
struct timespec timeout;
sigset_t mask;
int ret;
fd = open(_PATH_DEVNULL, O_RDONLY);
ATF_REQUIRE(fd >= 0);
pfd.fd = fd;
pfd.events = POLLIN;
/* Use a timeout of 1 second. */
timeout.tv_sec = 1;
timeout.tv_nsec = 0;
/* Unblock all signals. */
ATF_REQUIRE_EQ(sigfillset(&mask), 0);
ATF_REQUIRE_EQ(sigprocmask(SIG_UNBLOCK, &mask, NULL), 0);
/*
* Check that pollts(2) immediately returns. We block *all*
* signals during pollts(2).
*/
ATF_REQUIRE_EQ_MSG(ret = pollts(&pfd, 1, &timeout, &mask), 1,
"got: %d", ret);
/* Check that signals are now longer blocked. */
ATF_REQUIRE_EQ(sigprocmask(SIG_SETMASK, NULL, &mask), 0);
ATF_REQUIRE_EQ_MSG(sigismember(&mask, SIGUSR1), 0,
"signal mask was changed.");
ATF_REQUIRE_EQ(close(fd), 0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, poll_3way);
ATF_TP_ADD_TC(tp, poll_basic);
ATF_TP_ADD_TC(tp, poll_err);
ATF_TP_ADD_TC(tp, pollts_basic);
ATF_TP_ADD_TC(tp, pollts_err);
ATF_TP_ADD_TC(tp, pollts_sigmask);
return atf_no_error();
}