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
h_check(bool check_master)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);
ATF_TC_HEAD(master,tc)120 ATF_TC_HEAD(master, tc)
121 {
122 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for master tty");
123 }
ATF_TC_BODY(master,tc)124 ATF_TC_BODY(master, tc)
125 {
126 h_check(true);
127 }
128
129 ATF_TC(slave);
ATF_TC_HEAD(slave,tc)130 ATF_TC_HEAD(slave, tc)
131 {
132 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for slave tty");
133 }
ATF_TC_BODY(slave,tc)134 ATF_TC_BODY(slave, tc)
135 {
136 h_check(false);
137 }
138
139 ATF_TC(closed_slave);
ATF_TC_HEAD(closed_slave,tc)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 }
ATF_TC_BODY(closed_slave,tc)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
ATF_TP_ADD_TCS(tp)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