tests/kernel/kqueue/write/t_ttypty.c

   1 /* $NetBSD: t_ttypty.c,v 1.1 2009/02/20 21:39:58 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 21:39:58 jmmv Exp $");
  36
  37 #include <sys/event.h>
  38 #include <sys/wait.h>
  39
  40 #include <fcntl.h>
  41 #include <poll.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <termios.h>
  45 #include <unistd.h>
  46 #include <util.h>
  47
  48 #include <atf-c.h>
  49
  50 #include "../../../h_macros.h"
  51
  52 static void
  53 h_check(bool check_master)
  54 {
  55         char slavetty[1024];
  56         char buffer[128];
  57         struct kevent event[1];
  58         struct pollfd pfd;
  59         pid_t child;
  60         int status, kq, n;
  61         int amaster, aslave, acurrent;
  62
  63         RL(openpty(&amaster, &aslave, slavetty, NULL, NULL));
  64         (void)printf("tty: openpty master %d slave %d tty '%s'\n",
  65             amaster, aslave, slavetty);
  66         acurrent = check_master ? amaster : aslave;
  67
  68         RL(child = fork());
  69         if (child == 0) {
  70                 (void)sleep(1);
  71
  72                 n = read(check_master ? aslave : amaster, buffer, 128);
  73                 (void)printf("tty: child  read '%.*s'\n", n, buffer);
  74
  75                 _exit(0);
  76         }
  77
  78         pfd.fd = acurrent;
  79         pfd.events = POLLOUT;
  80         (void)printf("tty: polling ...\n");
  81         RL(poll(&pfd, 1, INFTIM));
  82         (void)printf("tty: returned from poll - %d\n", pfd.revents);
  83
  84         RL(kq = kqueue());
  85
  86         EV_SET(&event[0], acurrent, EVFILT_WRITE, EV_ADD|EV_ENABLE, 0, 0, 0);
  87         RL(kevent(kq, event, 1, NULL, 0, NULL));
  88
  89         RL(n = kevent(kq, NULL, 0, event, 1, NULL));
  90
  91         (void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, data: "
  92             "%" PRId64 "\n", n, event[0].filter, event[0].flags, event[0].fflags,
  93             event[0].data);
  94
  95         ATF_REQUIRE_EQ(event[0].filter, EVFILT_WRITE);
  96
  97         RL(n = write(acurrent, "f00\n", 4));
  98         (void)printf("tty: wrote 'f00\\n' (wrote %d characters)\n", n);
  99
 100         (void)waitpid(child, &status, 0);
 101         (void)printf("tty: successful end\n");
 102 }
 103
 104 ATF_TC(master);
 105 ATF_TC_HEAD(master, tc)
 106 {
 107         atf_tc_set_md_var(tc, "descr", "Checks EVFILT_WRITE for master tty");
 108 }
 109 ATF_TC_BODY(master, tc)
 110 {
 111         h_check(true);
 112 }
 113
 114 ATF_TC(slave);
 115 ATF_TC_HEAD(slave, tc)
 116 {
 117         atf_tc_set_md_var(tc, "descr", "Checks EVFILT_WRITE for slave tty");
 118 }
 119 ATF_TC_BODY(slave, tc)
 120 {
 121         h_check(false);
 122 }
 123
 124 ATF_TP_ADD_TCS(tp)
 125 {
 126         ATF_TP_ADD_TC(tp, master);
 127         ATF_TP_ADD_TC(tp, slave);
 128
 129         return atf_no_error();
 130 }