t_mknodat.c revision 311631 
1/*	$NetBSD: t_mknodat.c,v 1.3 2013/03/17 04:46:06 jmmv Exp $ */
2
3/*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Emmanuel Dreyfus.
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#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_mknodat.c,v 1.3 2013/03/17 04:46:06 jmmv Exp $");
33
34#include <atf-c.h>
35#include <errno.h>
36#include <fcntl.h>
37#include <limits.h>
38#include <paths.h>
39#include <stdio.h>
40#include <string.h>
41#include <unistd.h>
42#include <sys/param.h>
43#include <sys/stat.h>
44
45#define DIR "dir"
46#define FILE "dir/openat"
47#define BASEFILE "openat"
48#define FILEERR "dir/openaterr"
49
50static dev_t get_devnull(void);
51
52static dev_t
53get_devnull(void)
54{
55	struct stat st;
56
57	if (stat(_PATH_DEVNULL, &st) != 0)
58		return NODEV;
59
60	return st.st_rdev;
61}
62
63
64ATF_TC(mknodat_fd);
65ATF_TC_HEAD(mknodat_fd, tc)
66{
67	atf_tc_set_md_var(tc, "descr", "See that mknodat works with fd");
68	atf_tc_set_md_var(tc, "require.user", "root");
69}
70ATF_TC_BODY(mknodat_fd, tc)
71{
72	int dfd;
73	int fd;
74	dev_t dev;
75	mode_t mode = S_IFCHR|0600;
76
77	ATF_REQUIRE((dev = get_devnull()) != NODEV);
78	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
79	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
80	ATF_REQUIRE((fd = mknodat(dfd, BASEFILE, mode, dev)) != -1);
81	ATF_REQUIRE(close(fd) == 0);
82	ATF_REQUIRE(access(FILE, F_OK) == 0);
83#ifdef	__FreeBSD__
84	(void)close(dfd);
85#endif
86}
87
88ATF_TC(mknodat_fdcwd);
89ATF_TC_HEAD(mknodat_fdcwd, tc)
90{
91	atf_tc_set_md_var(tc, "descr",
92			  "See that mknodat works with fd as AT_FDCWD");
93	atf_tc_set_md_var(tc, "require.user", "root");
94}
95ATF_TC_BODY(mknodat_fdcwd, tc)
96{
97	int fd;
98	dev_t dev;
99	mode_t mode = S_IFCHR|0600;
100
101	ATF_REQUIRE((dev = get_devnull()) != NODEV);
102	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
103	ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILE, mode, dev)) != -1);
104	ATF_REQUIRE(close(fd) == 0);
105	ATF_REQUIRE(access(FILE, F_OK) == 0);
106}
107
108ATF_TC(mknodat_fdcwderr);
109ATF_TC_HEAD(mknodat_fdcwderr, tc)
110{
111	atf_tc_set_md_var(tc, "descr",
112		  "See that mknodat fails with fd as AT_FDCWD and bad path");
113	atf_tc_set_md_var(tc, "require.user", "root");
114}
115ATF_TC_BODY(mknodat_fdcwderr, tc)
116{
117	int fd;
118	dev_t dev;
119	mode_t mode = S_IFCHR|0600;
120
121	ATF_REQUIRE((dev = get_devnull()) != NODEV);
122	ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILEERR, mode, dev)) == -1);
123}
124
125ATF_TC(mknodat_fderr);
126ATF_TC_HEAD(mknodat_fderr, tc)
127{
128	atf_tc_set_md_var(tc, "descr", "See that mknodat fails with fd as -1");
129	atf_tc_set_md_var(tc, "require.user", "root");
130}
131ATF_TC_BODY(mknodat_fderr, tc)
132{
133	int fd;
134	dev_t dev;
135	mode_t mode = S_IFCHR|0600;
136
137	ATF_REQUIRE((dev = get_devnull()) != NODEV);
138	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
139	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
140	ATF_REQUIRE(close(fd) == 0);
141	ATF_REQUIRE((fd = mknodat(-1, FILE, mode, dev)) == -1);
142}
143
144ATF_TP_ADD_TCS(tp)
145{
146
147	ATF_TP_ADD_TC(tp, mknodat_fd);
148	ATF_TP_ADD_TC(tp, mknodat_fdcwd);
149	ATF_TP_ADD_TC(tp, mknodat_fdcwderr);
150	ATF_TP_ADD_TC(tp, mknodat_fderr);
151
152	return atf_no_error();
153}
154