1 /* $NetBSD: t_unlinkat.c,v 1.3 2017/01/10 15:13:56 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_unlinkat.c,v 1.3 2017/01/10 15:13:56 christos Exp $");
33
34 #include <sys/param.h>
35 #include <sys/stat.h>
36 #include <atf-c.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <limits.h>
40 #include <paths.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <unistd.h>
44
45 #define DIR "dir"
46 #define FILE "dir/unlinkat"
47 #define BASEFILE "unlinkat"
48 #define FILEERR "dir/unlinkaterr"
49
50 ATF_TC(unlinkat_fd);
ATF_TC_HEAD(unlinkat_fd,tc)51 ATF_TC_HEAD(unlinkat_fd, tc)
52 {
53 atf_tc_set_md_var(tc, "descr", "See that unlinkat works with fd");
54 }
ATF_TC_BODY(unlinkat_fd,tc)55 ATF_TC_BODY(unlinkat_fd, tc)
56 {
57 int dfd;
58 int fd;
59
60 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
61 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
62 ATF_REQUIRE(close(fd) == 0);
63
64 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
65 ATF_REQUIRE(unlinkat(dfd, BASEFILE, 0) == 0);
66 ATF_REQUIRE(close(dfd) == 0);
67 }
68
69 ATF_TC(unlinkat_fdcwd);
ATF_TC_HEAD(unlinkat_fdcwd,tc)70 ATF_TC_HEAD(unlinkat_fdcwd, tc)
71 {
72 atf_tc_set_md_var(tc, "descr",
73 "See that unlinkat works with fd as AT_FDCWD");
74 }
ATF_TC_BODY(unlinkat_fdcwd,tc)75 ATF_TC_BODY(unlinkat_fdcwd, tc)
76 {
77 int fd;
78
79 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
80 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
81 ATF_REQUIRE(close(fd) == 0);
82
83 ATF_REQUIRE(chdir(DIR) == 0);
84 ATF_REQUIRE(unlinkat(AT_FDCWD, BASEFILE, 0) == 0);
85 }
86
87 ATF_TC(unlinkat_fdcwderr);
ATF_TC_HEAD(unlinkat_fdcwderr,tc)88 ATF_TC_HEAD(unlinkat_fdcwderr, tc)
89 {
90 atf_tc_set_md_var(tc, "descr",
91 "See that unlinkat fails with fd as AT_FDCWD and bad path");
92 }
ATF_TC_BODY(unlinkat_fdcwderr,tc)93 ATF_TC_BODY(unlinkat_fdcwderr, tc)
94 {
95 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
96 ATF_REQUIRE(unlinkat(AT_FDCWD, FILEERR, 0) == -1);
97 }
98
99 ATF_TC(unlinkat_fderr1);
ATF_TC_HEAD(unlinkat_fderr1,tc)100 ATF_TC_HEAD(unlinkat_fderr1, tc)
101 {
102 atf_tc_set_md_var(tc, "descr", "See that unlinkat fail with bad path");
103 }
ATF_TC_BODY(unlinkat_fderr1,tc)104 ATF_TC_BODY(unlinkat_fderr1, tc)
105 {
106 int dfd;
107
108 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
109 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
110 ATF_REQUIRE(unlinkat(dfd, FILEERR, 0) == -1);
111 ATF_REQUIRE(close(dfd) == 0);
112 }
113
114 ATF_TC(unlinkat_fderr2);
ATF_TC_HEAD(unlinkat_fderr2,tc)115 ATF_TC_HEAD(unlinkat_fderr2, tc)
116 {
117 atf_tc_set_md_var(tc, "descr", "See that unlinkat fails with bad fdat");
118 }
ATF_TC_BODY(unlinkat_fderr2,tc)119 ATF_TC_BODY(unlinkat_fderr2, tc)
120 {
121 int dfd;
122 int fd;
123 char cwd[MAXPATHLEN];
124
125 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
126 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
127 ATF_REQUIRE(close(fd) == 0);
128
129 ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1);
130 ATF_REQUIRE(unlinkat(dfd, BASEFILE, 0) == -1);
131 ATF_REQUIRE(close(dfd) == 0);
132 }
133
134 ATF_TC(unlinkat_fderr3);
ATF_TC_HEAD(unlinkat_fderr3,tc)135 ATF_TC_HEAD(unlinkat_fderr3, tc)
136 {
137 atf_tc_set_md_var(tc, "descr", "See that unlinkat fails with fd as -1");
138 }
ATF_TC_BODY(unlinkat_fderr3,tc)139 ATF_TC_BODY(unlinkat_fderr3, tc)
140 {
141 int fd;
142
143 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
144 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
145 ATF_REQUIRE(close(fd) == 0);
146
147 ATF_REQUIRE(unlinkat(-1, FILE, 0) == -1);
148 }
149
150 ATF_TC(unlinkat_dir);
ATF_TC_HEAD(unlinkat_dir,tc)151 ATF_TC_HEAD(unlinkat_dir, tc)
152 {
153 atf_tc_set_md_var(tc, "descr",
154 "See that unlinkat can remove directories");
155 }
ATF_TC_BODY(unlinkat_dir,tc)156 ATF_TC_BODY(unlinkat_dir, tc)
157 {
158 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
159
160 ATF_REQUIRE(unlinkat(AT_FDCWD, DIR, 0) == -1);
161 ATF_REQUIRE(errno == EPERM);
162 ATF_REQUIRE(unlinkat(AT_FDCWD, DIR, AT_REMOVEDIR) == 0);
163 }
164
ATF_TP_ADD_TCS(tp)165 ATF_TP_ADD_TCS(tp)
166 {
167
168 ATF_TP_ADD_TC(tp, unlinkat_fd);
169 ATF_TP_ADD_TC(tp, unlinkat_fdcwd);
170 ATF_TP_ADD_TC(tp, unlinkat_fdcwderr);
171 ATF_TP_ADD_TC(tp, unlinkat_fderr1);
172 ATF_TP_ADD_TC(tp, unlinkat_fderr2);
173 ATF_TP_ADD_TC(tp, unlinkat_fderr3);
174 ATF_TP_ADD_TC(tp, unlinkat_dir);
175
176 return atf_no_error();
177 }
178