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t_ttypty.c revision 1.1 
      1 /* $NetBSD: t_ttypty.c,v 1.1 2009/02/20 21:39:57 jmmv Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Luke Mewburn and Jaromir Dolecek.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __COPYRIGHT("@(#) Copyright (c) 2008\
     34  The NetBSD Foundation, inc. All rights reserved.");
     35 __RCSID("$NetBSD: t_ttypty.c,v 1.1 2009/02/20 21:39:57 jmmv Exp $");
     36 
     37 #include <sys/event.h>
     38 #include <sys/wait.h>
     39 
     40 #include <poll.h>
     41 #include <stdio.h>
     42 #include <termios.h>
     43 #include <unistd.h>
     44 #include <util.h>
     45 
     46 #include <atf-c.h>
     47 
     48 #include "../../../h_macros.h"
     49 
     50 static void
     51 h_check(bool check_master)
     52 {
     53 	char slavetty[1024];
     54 	char buffer[128];
     55 	struct kevent event[1];
     56 	pid_t child;
     57 	int amaster, aslave, acurrent;
     58 	int kq, n, status;
     59 #if 0
     60 	int fl;
     61 #endif
     62 	struct pollfd pfd;
     63 	struct termios tio;
     64 
     65 	RL(openpty(&amaster, &aslave, slavetty, NULL, NULL));
     66 
     67 	(void)printf("tty: openpty master %d slave %d tty '%s'\n",
     68 		amaster, aslave, slavetty);
     69 	acurrent = check_master ? amaster : aslave;
     70 
     71 	RL(child = fork());
     72 	if (child == 0) {
     73 		sleep(1);
     74 
     75 		(void)printf("tty: child writing 'f00\\n'\n");
     76 		(void)write(check_master ? aslave : amaster, "f00\n", 4);
     77 
     78 		_exit(0);
     79 	}
     80 
     81 	/* switch ONLCR off, to not get confused by newline translation */
     82 	RL(tcgetattr(acurrent, &tio));
     83 	tio.c_oflag &= ~ONLCR;
     84 	RL(tcsetattr(acurrent, TCSADRAIN, &tio));
     85 
     86 	pfd.fd = acurrent;
     87 	pfd.events = POLLIN;
     88 	(void)printf("tty: polling ...\n");
     89 	RL(poll(&pfd, 1, INFTIM));
     90 	(void)printf("tty: returned from poll - %d\n", pfd.revents);
     91 
     92 #if 0
     93 	fl = 1;
     94 	if (ioctl(acurrent, TIOCPKT, &fl) < 0)
     95 		err(1, "ioctl");
     96 #endif
     97 
     98 	RL(kq = kqueue());
     99 
    100 	EV_SET(&event[0], acurrent, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
    101 	RL(kevent(kq, event, 1, NULL, 0, NULL));
    102 
    103 	RL(n = kevent(kq, NULL, 0, event, 1, NULL));
    104 
    105 	(void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, "
    106 	    "data: %" PRId64 "\n", n, event[0].filter, event[0].flags,
    107 	    event[0].fflags, event[0].data);
    108 
    109 	ATF_REQUIRE_EQ(event[0].filter, EVFILT_READ);
    110 
    111 	RL(n = read(acurrent, buffer, 128));
    112 	(void)printf("tty: read '%.*s' (n=%d)\n", n, buffer, n);
    113 
    114 	(void)waitpid(child, &status, 0);
    115 	(void)printf("tty: successful end\n");
    116 }
    117 
    118 ATF_TC(master);
    119 ATF_TC_HEAD(master, tc)
    120 {
    121 	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for master tty");
    122 }
    123 ATF_TC_BODY(master, tc)
    124 {
    125 	h_check(true);
    126 }
    127 
    128 ATF_TC(slave);
    129 ATF_TC_HEAD(slave, tc)
    130 {
    131 	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for slave tty");
    132 }
    133 ATF_TC_BODY(slave, tc)
    134 {
    135 	h_check(false);
    136 }
    137 
    138 ATF_TP_ADD_TCS(tp)
    139 {
    140 	ATF_TP_ADD_TC(tp, master);
    141 	ATF_TP_ADD_TC(tp, slave);
    142 
    143 	return atf_no_error();
    144 }
    145