minix/tests/kernel/kqueue/read/t_ttypty.c

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/* $NetBSD: t_ttypty.c,v 1.1 2009/02/20 21:39:57 jmmv Exp $ */
/*-
* Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn and Jaromir Dolecek.
*
* 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/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_ttypty.c,v 1.1 2009/02/20 21:39:57 jmmv Exp $");
#include <sys/event.h>
#include <sys/wait.h>
#include <poll.h>
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <util.h>
#include <atf-c.h>
#include "../../../h_macros.h"
static void
h_check(bool check_master)
{
char slavetty[1024];
char buffer[128];
struct kevent event[1];
pid_t child;
int amaster, aslave, acurrent;
int kq, n, status;
#if 0
int fl;
#endif
struct pollfd pfd;
struct termios tio;
RL(openpty(&amaster, &aslave, slavetty, NULL, NULL));
(void)printf("tty: openpty master %d slave %d tty '%s'\n",
amaster, aslave, slavetty);
acurrent = check_master ? amaster : aslave;
RL(child = fork());
if (child == 0) {
sleep(1);
(void)printf("tty: child writing 'f00\\n'\n");
(void)write(check_master ? aslave : amaster, "f00\n", 4);
_exit(0);
}
/* switch ONLCR off, to not get confused by newline translation */
RL(tcgetattr(acurrent, &tio));
tio.c_oflag &= ~ONLCR;
RL(tcsetattr(acurrent, TCSADRAIN, &tio));
pfd.fd = acurrent;
pfd.events = POLLIN;
(void)printf("tty: polling ...\n");
RL(poll(&pfd, 1, INFTIM));
(void)printf("tty: returned from poll - %d\n", pfd.revents);
#if 0
fl = 1;
if (ioctl(acurrent, TIOCPKT, &fl) < 0)
err(1, "ioctl");
#endif
RL(kq = kqueue());
EV_SET(&event[0], acurrent, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
RL(kevent(kq, event, 1, NULL, 0, NULL));
RL(n = kevent(kq, NULL, 0, event, 1, NULL));
(void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, "
"data: %" PRId64 "\n", n, event[0].filter, event[0].flags,
event[0].fflags, event[0].data);
ATF_REQUIRE_EQ(event[0].filter, EVFILT_READ);
RL(n = read(acurrent, buffer, 128));
(void)printf("tty: read '%.*s' (n=%d)\n", n, buffer, n);
(void)waitpid(child, &status, 0);
(void)printf("tty: successful end\n");
}
ATF_TC(master);
ATF_TC_HEAD(master, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for master tty");
}
ATF_TC_BODY(master, tc)
{
h_check(true);
}
ATF_TC(slave);
ATF_TC_HEAD(slave, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for slave tty");
}
ATF_TC_BODY(slave, tc)
{
h_check(false);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, master);
ATF_TP_ADD_TC(tp, slave);
return atf_no_error();
}