tests/kernel/kqueue/read/t_ttypty.c

   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 }