1 /* $NetBSD: t_ttypty.c,v 1.2 2017/01/13 21:30:41 christos 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 1.2 2017/01/13 21:30:41 christos 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 } 131