t_unlinkat.c revision 313535 
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
50ATF_TC(unlinkat_fd);
51ATF_TC_HEAD(unlinkat_fd, tc)
52{
53	atf_tc_set_md_var(tc, "descr", "See that unlinkat works with fd");
54}
55ATF_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
69ATF_TC(unlinkat_fdcwd);
70ATF_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}
75ATF_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
87ATF_TC(unlinkat_fdcwderr);
88ATF_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}
93ATF_TC_BODY(unlinkat_fdcwderr, tc)
94{
95	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
96	ATF_REQUIRE(unlinkat(AT_FDCWD, FILEERR, 0) == -1);
97}
98
99ATF_TC(unlinkat_fderr1);
100ATF_TC_HEAD(unlinkat_fderr1, tc)
101{
102	atf_tc_set_md_var(tc, "descr", "See that unlinkat fail with bad path");
103}
104ATF_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
114ATF_TC(unlinkat_fderr2);
115ATF_TC_HEAD(unlinkat_fderr2, tc)
116{
117	atf_tc_set_md_var(tc, "descr", "See that unlinkat fails with bad fdat");
118}
119ATF_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
134ATF_TC(unlinkat_fderr3);
135ATF_TC_HEAD(unlinkat_fderr3, tc)
136{
137	atf_tc_set_md_var(tc, "descr", "See that unlinkat fails with fd as -1");
138}
139ATF_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
150ATF_TC(unlinkat_dir);
151ATF_TC_HEAD(unlinkat_dir, tc)
152{
153	atf_tc_set_md_var(tc, "descr",
154			  "See that unlinkat can remove directories");
155}
156ATF_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
165ATF_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