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      1 /* $NetBSD: t_pr.c,v 1.7 2011/04/26 20:42:01 martin Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Antti Kantee <pooka (at) NetBSD.org> and Martin Husemann <martin (at) NetBSD.org>.
      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/types.h>
     33 #include <sys/ioctl.h>
     34 #include <sys/tty.h>
     35 
     36 #include <atf-c.h>
     37 #include <fcntl.h>
     38 
     39 #include <stdio.h>
     40 #include <string.h>
     41 #include <errno.h>
     42 #include <rump/rump.h>
     43 #include <rump/rump_syscalls.h>
     44 
     45 static int
     46 sendsome(int from, int to)
     47 {
     48 	size_t i;
     49 	ssize_t cnt;
     50 	static const char msg[] = "hello world\n";
     51 	char buf[sizeof(msg)+10];
     52 
     53 	memset(buf, 0, sizeof(buf));
     54 	rump_sys_write(from, msg, strlen(msg));
     55 	cnt = rump_sys_read(to, buf, sizeof(buf));
     56 	if (cnt < (ssize_t)strlen(msg)) {
     57 		printf("short message read: %zd chars: \"%s\"\n", cnt, buf);
     58 		return 1;
     59 	}
     60 	for (i = 0; i < sizeof(buf); i++) {
     61 		if (buf[i] == '\r' || buf[i] == '\n') {
     62 			buf[i] = '\n';
     63 			buf[i+1] = '\0';
     64 			break;
     65 		}
     66 	}
     67 
     68 	return strcmp(buf, msg) != 0;
     69 }
     70 
     71 static int
     72 exercise_ptytty(int master, int slave)
     73 {
     74 	int error, flags;
     75 
     76 	/*
     77 	 * send a few bytes from master to slave and read them back
     78 	 */
     79 	error = sendsome(master, slave);
     80 	if (error)
     81 		return error;
     82 
     83 	flags = FREAD|FWRITE;
     84 	rump_sys_ioctl(master, TIOCFLUSH, &flags);
     85 
     86 	/*
     87 	 * and the same in the other direction
     88 	 */
     89 	error = sendsome(slave, master);
     90 	if (error)
     91 		return error;
     92 
     93 	flags = FREAD|FWRITE;
     94 	rump_sys_ioctl(master, TIOCFLUSH, &flags);
     95 	return 0;
     96 }
     97 
     98 ATF_TC(client_first);
     99 ATF_TC_HEAD(client_first, tc)
    100 {
    101 
    102 	atf_tc_set_md_var(tc, "descr",
    103 	    "test basic tty/pty operation when opening client side first");
    104 }
    105 
    106 ATF_TC_BODY(client_first, tc)
    107 {
    108 	int master, slave, error, v;
    109 
    110 	rump_init();
    111 	slave =  rump_sys_open("/dev/ttyp1", O_RDWR|O_NONBLOCK);
    112 	ATF_CHECK(slave != -1);
    113 
    114 	master = rump_sys_open("/dev/ptyp1", O_RDWR);
    115 	ATF_CHECK(master != -1);
    116 
    117 	v = 0;
    118 	rump_sys_ioctl(slave, FIOASYNC, &v);
    119 	error = exercise_ptytty(master, slave);
    120 	ATF_CHECK(error == 0);
    121 
    122 	rump_sys_close(master);
    123 	rump_sys_close(slave);
    124 }
    125 
    126 ATF_TC(master_first);
    127 ATF_TC_HEAD(master_first, tc)
    128 {
    129 
    130 	atf_tc_set_md_var(tc, "descr",
    131 	    "test basic tty/pty operation when opening master side first");
    132 }
    133 
    134 ATF_TC_BODY(master_first, tc)
    135 {
    136 	int master, slave, error;
    137 
    138 	rump_init();
    139 	master = rump_sys_open("/dev/ptyp1", O_RDWR);
    140 	ATF_CHECK(master != -1);
    141 
    142 	slave =  rump_sys_open("/dev/ttyp1", O_RDWR);
    143 	ATF_CHECK(slave != -1);
    144 
    145 	error = exercise_ptytty(master, slave);
    146 	ATF_CHECK(error == 0);
    147 
    148 	rump_sys_close(master);
    149 	rump_sys_close(slave);
    150 }
    151 
    152 ATF_TC(ptyioctl);
    153 ATF_TC_HEAD(ptyioctl, tc)
    154 {
    155 
    156 	atf_tc_set_md_var(tc, "descr",
    157 	    "ioctl on pty with client side not open");
    158 }
    159 
    160 ATF_TC_BODY(ptyioctl, tc)
    161 {
    162 	struct termios tio;
    163 	int fd;
    164 
    165 	rump_init();
    166 	fd = rump_sys_open("/dev/ptyp1", O_RDWR);
    167 	ATF_CHECK(fd != -1);
    168 
    169 	/*
    170 	 * This used to die with null deref under ptcwakeup()
    171 	 * atf_tc_expect_signal(-1, "PR kern/40688");
    172 	 */
    173 	rump_sys_ioctl(fd, TIOCGETA, &tio);
    174 
    175 	rump_sys_close(fd);
    176 }
    177 
    178 ATF_TP_ADD_TCS(tp)
    179 {
    180 
    181 	ATF_TP_ADD_TC(tp, ptyioctl);
    182 	ATF_TP_ADD_TC(tp, client_first);
    183 	ATF_TP_ADD_TC(tp, master_first);
    184 
    185 	return atf_no_error();
    186 }
    187