1/* $NetBSD: t_ptm.c,v 1.1 2011/01/13 03:19:57 pgoyette Exp $ */
2
3/*
4 * Copyright (c) 2004, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
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_ptm.c,v 1.1 2011/01/13 03:19:57 pgoyette Exp $");
36
37#include <sys/ioctl.h>
38#include <sys/stat.h>
39
40#include <errno.h>
41#include <fcntl.h>
42#include <grp.h>
43#include <stdlib.h>
44#include <string.h>
45#include <unistd.h>
46
47#include <atf-c.h>
48
49#define REQUIRE_ERRNO(x, v) \
50		ATF_REQUIRE_MSG(x != v, "%s: %s", #x, strerror(errno))
51
52ATF_TC(ptm);
53
54ATF_TC_HEAD(ptm, tc)
55{
56
57	atf_tc_set_md_var(tc, "descr", "Checks /dev/ptm device");
58}
59
60ATF_TC_BODY(ptm, tc)
61{
62	struct stat stm, sts;
63	struct ptmget ptm;
64	int fdm;
65	struct group *gp;
66
67	if ((fdm = open("/dev/ptm", O_RDWR)) == -1) {
68		if (errno == ENOENT || errno == ENODEV)
69			atf_tc_skip("/dev/ptm: %s", strerror(errno));
70		atf_tc_fail("/dev/ptm: %s", strerror(errno));
71	}
72
73	REQUIRE_ERRNO(fstat(fdm, &stm), -1);
74	ATF_REQUIRE_EQ(major(stm.st_rdev), 165);
75	REQUIRE_ERRNO(ioctl(fdm, TIOCPTMGET, &ptm), -1);
76
77	ATF_REQUIRE_MSG(strncmp(ptm.cn, "/dev/pty", 8) == 0
78		|| strncmp(ptm.cn, "/dev/null", 9) == 0,
79		"bad master name: %s", ptm.cn);
80
81	ATF_REQUIRE_MSG(strncmp(ptm.sn, "/dev/tty", 8) == 0
82		|| strncmp(ptm.sn, "/dev/pts/", 9) == 0,
83		"bad slave name: %s", ptm.sn);
84
85	if (strncmp(ptm.cn, "/dev/null", 9) != 0) {
86		REQUIRE_ERRNO(fstat(ptm.cfd, &stm), -1);
87		REQUIRE_ERRNO(stat(ptm.cn, &sts), -1);
88		ATF_REQUIRE_EQ(stm.st_rdev, sts.st_rdev);
89	}
90
91	REQUIRE_ERRNO(fstat(ptm.sfd, &stm), -1);
92	REQUIRE_ERRNO(stat(ptm.sn, &sts), -1);
93	ATF_REQUIRE_EQ(stm.st_rdev, sts.st_rdev);
94
95	ATF_REQUIRE_EQ_MSG(sts.st_uid, getuid(), "bad slave uid");
96
97	ATF_REQUIRE_MSG((gp = getgrnam("tty")) != NULL,
98	    "cannot find `tty' group");
99	ATF_REQUIRE_EQ_MSG(sts.st_gid, gp->gr_gid, "bad slave grid");
100
101	(void)close(ptm.sfd);
102	(void)close(ptm.cfd);
103	(void)close(fdm);
104}
105
106/*
107 * On NetBSD /dev/ptyp0 == /dev/pts/0 so we can check for major
108 * and minor device numbers. This check is non-portable. This
109 * check is now disabled because we might not have /dev/ptyp0
110 * at all.
111 */
112
113/*
114 * #define PTY_DEVNO_CHECK
115 */
116
117ATF_TC(ptmx);
118
119ATF_TC_HEAD(ptmx, tc)
120{
121
122	atf_tc_set_md_var(tc, "descr", "Checks /dev/ptmx device");
123}
124
125ATF_TC_BODY(ptmx, tc)
126{
127	struct stat stm, sts;
128	char *pty;
129	int fdm, fds;
130	struct group *gp;
131
132	if ((fdm = posix_openpt(O_RDWR|O_NOCTTY)) == -1) {
133		if (errno == ENOENT || errno == ENODEV)
134			atf_tc_skip("/dev/ptmx: %s", strerror(errno));
135
136		atf_tc_fail("/dev/ptmx: %s", strerror(errno));
137	}
138
139	REQUIRE_ERRNO(fstat(fdm, &stm), -1);
140
141#ifdef PTY_DEVNO_CHECK
142	REQUIRE_ERRNO(stat("/dev/ptyp0", &sts), -1);
143
144	ATF_REQUIRE_EQ_MSG(major(stm.st_rdev), major(sts.st_rdev),
145		"bad master major number");
146#endif
147
148	REQUIRE_ERRNO(grantpt(fdm), -1);
149	REQUIRE_ERRNO(unlockpt(fdm), -1);
150	REQUIRE_ERRNO((pty = ptsname(fdm)), NULL);
151
152	REQUIRE_ERRNO((fds = open(pty, O_RDWR|O_NOCTTY)), -1);
153	REQUIRE_ERRNO(fstat(fds, &sts), -1);
154
155#ifdef PTY_DEVNO_CHECK
156	ATF_REQUIRE_EQ_MSG(minor(stm.st_rdev), minor(sts.st_rdev),
157		"bad slave minor number");
158#endif
159
160	ATF_REQUIRE_EQ_MSG(sts.st_uid, getuid(), "bad slave uid");
161	ATF_REQUIRE_MSG((gp = getgrnam("tty")) != NULL,
162	    "cannot find `tty' group");
163
164	ATF_REQUIRE_EQ_MSG(sts.st_gid, gp->gr_gid, "bad slave gid");
165}
166
167ATF_TP_ADD_TCS(tp)
168{
169
170	ATF_TP_ADD_TC(tp, ptm);
171	ATF_TP_ADD_TC(tp, ptmx);
172
173	return atf_no_error();
174}
175