1 /* $NetBSD: t_ttypty.c,v 1.3 2019/02/15 18:57:15 mgorny Exp $ */ 2 3 /*- 4 * Copyright (c) 2002, 2008, 2019 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, 2019\ 34 The NetBSD Foundation, inc. All rights reserved."); 35 __RCSID("$NetBSD: t_ttypty.c,v 1.3 2019/02/15 18:57:15 mgorny Exp $"); 36 37 #include <sys/event.h> 38 #include <sys/time.h> 39 #include <sys/wait.h> 40 41 #include <poll.h> 42 #include <stdio.h> 43 #include <termios.h> 44 #include <unistd.h> 45 #include <util.h> 46 47 #include <atf-c.h> 48 49 #include "h_macros.h" 50 51 static void 52 h_check(bool check_master) 53 { 54 char slavetty[1024]; 55 char buffer[128]; 56 struct kevent event[1]; 57 pid_t child; 58 int amaster, aslave, acurrent; 59 int kq, n, status; 60 #if 0 61 int fl; 62 #endif 63 struct pollfd pfd; 64 struct termios tio; 65 66 RL(openpty(&amaster, &aslave, slavetty, NULL, NULL)); 67 68 (void)printf("tty: openpty master %d slave %d tty '%s'\n", 69 amaster, aslave, slavetty); 70 acurrent = check_master ? amaster : aslave; 71 72 RL(child = fork()); 73 if (child == 0) { 74 sleep(1); 75 76 (void)printf("tty: child writing 'f00\\n'\n"); 77 (void)write(check_master ? aslave : amaster, "f00\n", 4); 78 79 _exit(0); 80 } 81 82 /* switch ONLCR off, to not get confused by newline translation */ 83 RL(tcgetattr(acurrent, &tio)); 84 tio.c_oflag &= ~ONLCR; 85 RL(tcsetattr(acurrent, TCSADRAIN, &tio)); 86 87 pfd.fd = acurrent; 88 pfd.events = POLLIN; 89 (void)printf("tty: polling ...\n"); 90 RL(poll(&pfd, 1, INFTIM)); 91 (void)printf("tty: returned from poll - %d\n", pfd.revents); 92 93 #if 0 94 fl = 1; 95 if (ioctl(acurrent, TIOCPKT, &fl) < 0) 96 err(1, "ioctl"); 97 #endif 98 99 RL(kq = kqueue()); 100 101 EV_SET(&event[0], acurrent, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0); 102 RL(kevent(kq, event, 1, NULL, 0, NULL)); 103 104 RL(n = kevent(kq, NULL, 0, event, 1, NULL)); 105 106 (void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, " 107 "data: %" PRId64 "\n", n, event[0].filter, event[0].flags, 108 event[0].fflags, event[0].data); 109 110 ATF_REQUIRE_EQ(event[0].filter, EVFILT_READ); 111 112 RL(n = read(acurrent, buffer, 128)); 113 (void)printf("tty: read '%.*s' (n=%d)\n", n, buffer, n); 114 115 (void)waitpid(child, &status, 0); 116 (void)printf("tty: successful end\n"); 117 } 118 119 ATF_TC(master); 120 ATF_TC_HEAD(master, tc) 121 { 122 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for master tty"); 123 } 124 ATF_TC_BODY(master, tc) 125 { 126 h_check(true); 127 } 128 129 ATF_TC(slave); 130 ATF_TC_HEAD(slave, tc) 131 { 132 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for slave tty"); 133 } 134 ATF_TC_BODY(slave, tc) 135 { 136 h_check(false); 137 } 138 139 ATF_TC(closed_slave); 140 ATF_TC_HEAD(closed_slave, tc) 141 { 142 atf_tc_set_md_var(tc, "descr", 143 "Checks EVFILT_READ reporting for slave tty being closed"); 144 } 145 ATF_TC_BODY(closed_slave, tc) 146 { 147 char slavetty[1024]; 148 struct kevent event[1]; 149 int amaster, aslave; 150 int kq, n; 151 struct timespec timeout = {5, 0}; 152 153 RL(openpty(&amaster, &aslave, slavetty, NULL, NULL)); 154 155 (void)printf("tty: openpty master %d slave %d tty '%s'\n", 156 amaster, aslave, slavetty); 157 158 RL(kq = kqueue()); 159 160 EV_SET(&event[0], amaster, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0); 161 RL(kevent(kq, event, 1, NULL, 0, NULL)); 162 163 RL(close(aslave)); 164 165 RL(n = kevent(kq, NULL, 0, event, 1, &timeout)); 166 167 (void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, " 168 "data: %" PRId64 "\n", n, event[0].filter, event[0].flags, 169 event[0].fflags, event[0].data); 170 171 ATF_REQUIRE_EQ(n, 1); 172 ATF_REQUIRE_EQ(event[0].filter, EVFILT_READ); 173 ATF_REQUIRE_EQ(event[0].flags & EV_EOF, EV_EOF); 174 } 175 176 ATF_TP_ADD_TCS(tp) 177 { 178 ATF_TP_ADD_TC(tp, master); 179 ATF_TP_ADD_TC(tp, slave); 180 ATF_TP_ADD_TC(tp, closed_slave); 181 182 return atf_no_error(); 183 } 184