1 /* $NetBSD: t_mknodat.c,v 1.4 2017/01/10 15:15:09 christos 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 1.4 2017/01/10 15:15:09 christos 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
50 static dev_t get_devnull(void);
51
52 static dev_t
get_devnull(void)53 get_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
64 ATF_TC(mknodat_fd);
ATF_TC_HEAD(mknodat_fd,tc)65 ATF_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 }
ATF_TC_BODY(mknodat_fd,tc)70 ATF_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 (void)close(dfd);
84 }
85
86 ATF_TC(mknodat_fdcwd);
ATF_TC_HEAD(mknodat_fdcwd,tc)87 ATF_TC_HEAD(mknodat_fdcwd, tc)
88 {
89 atf_tc_set_md_var(tc, "descr",
90 "See that mknodat works with fd as AT_FDCWD");
91 atf_tc_set_md_var(tc, "require.user", "root");
92 }
ATF_TC_BODY(mknodat_fdcwd,tc)93 ATF_TC_BODY(mknodat_fdcwd, tc)
94 {
95 int fd;
96 dev_t dev;
97 mode_t mode = S_IFCHR|0600;
98
99 ATF_REQUIRE((dev = get_devnull()) != NODEV);
100 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
101 ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILE, mode, dev)) != -1);
102 ATF_REQUIRE(close(fd) == 0);
103 ATF_REQUIRE(access(FILE, F_OK) == 0);
104 }
105
106 ATF_TC(mknodat_fdcwderr);
ATF_TC_HEAD(mknodat_fdcwderr,tc)107 ATF_TC_HEAD(mknodat_fdcwderr, tc)
108 {
109 atf_tc_set_md_var(tc, "descr",
110 "See that mknodat fails with fd as AT_FDCWD and bad path");
111 atf_tc_set_md_var(tc, "require.user", "root");
112 }
ATF_TC_BODY(mknodat_fdcwderr,tc)113 ATF_TC_BODY(mknodat_fdcwderr, tc)
114 {
115 int fd;
116 dev_t dev;
117 mode_t mode = S_IFCHR|0600;
118
119 ATF_REQUIRE((dev = get_devnull()) != NODEV);
120 ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILEERR, mode, dev)) == -1);
121 }
122
123 ATF_TC(mknodat_fderr);
ATF_TC_HEAD(mknodat_fderr,tc)124 ATF_TC_HEAD(mknodat_fderr, tc)
125 {
126 atf_tc_set_md_var(tc, "descr", "See that mknodat fails with fd as -1");
127 atf_tc_set_md_var(tc, "require.user", "root");
128 }
ATF_TC_BODY(mknodat_fderr,tc)129 ATF_TC_BODY(mknodat_fderr, tc)
130 {
131 int fd;
132 dev_t dev;
133 mode_t mode = S_IFCHR|0600;
134
135 ATF_REQUIRE((dev = get_devnull()) != NODEV);
136 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
137 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
138 ATF_REQUIRE(close(fd) == 0);
139 ATF_REQUIRE((fd = mknodat(-1, FILE, mode, dev)) == -1);
140 }
141
ATF_TP_ADD_TCS(tp)142 ATF_TP_ADD_TCS(tp)
143 {
144
145 ATF_TP_ADD_TC(tp, mknodat_fd);
146 ATF_TP_ADD_TC(tp, mknodat_fdcwd);
147 ATF_TP_ADD_TC(tp, mknodat_fdcwderr);
148 ATF_TP_ADD_TC(tp, mknodat_fderr);
149
150 return atf_no_error();
151 }
152