t_unlinkat.c revision 285830 
1/*	$NetBSD: t_unlinkat.c,v 1.2 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_unlinkat.c,v 1.2 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
44#define DIR "dir"
45#define FILE "dir/unlinkat"
46#define BASEFILE "unlinkat"
47#define FILEERR "dir/unlinkaterr"
48
49ATF_TC(unlinkat_fd);
50ATF_TC_HEAD(unlinkat_fd, tc)
51{
52	atf_tc_set_md_var(tc, "descr", "See that unlinkat works with fd");
53}
54ATF_TC_BODY(unlinkat_fd, tc)
55{
56	int dfd;
57	int fd;
58
59	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
60	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
61	ATF_REQUIRE(close(fd) == 0);
62
63	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
64	ATF_REQUIRE(unlinkat(dfd, BASEFILE, 0) == 0);
65	ATF_REQUIRE(close(dfd) == 0);
66}
67
68ATF_TC(unlinkat_fdcwd);
69ATF_TC_HEAD(unlinkat_fdcwd, tc)
70{
71	atf_tc_set_md_var(tc, "descr",
72			  "See that unlinkat works with fd as AT_FDCWD");
73}
74ATF_TC_BODY(unlinkat_fdcwd, tc)
75{
76	int fd;
77
78	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
79	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
80	ATF_REQUIRE(close(fd) == 0);
81
82	ATF_REQUIRE(chdir(DIR) == 0);
83	ATF_REQUIRE(unlinkat(AT_FDCWD, BASEFILE, 0) == 0);
84}
85
86ATF_TC(unlinkat_fdcwderr);
87ATF_TC_HEAD(unlinkat_fdcwderr, tc)
88{
89	atf_tc_set_md_var(tc, "descr",
90		  "See that unlinkat fails with fd as AT_FDCWD and bad path");
91}
92ATF_TC_BODY(unlinkat_fdcwderr, tc)
93{
94	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
95	ATF_REQUIRE(unlinkat(AT_FDCWD, FILEERR, 0) == -1);
96}
97
98ATF_TC(unlinkat_fderr1);
99ATF_TC_HEAD(unlinkat_fderr1, tc)
100{
101	atf_tc_set_md_var(tc, "descr", "See that unlinkat fail with bad path");
102}
103ATF_TC_BODY(unlinkat_fderr1, tc)
104{
105	int dfd;
106
107	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
108	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
109	ATF_REQUIRE(unlinkat(dfd, FILEERR, 0) == -1);
110	ATF_REQUIRE(close(dfd) == 0);
111}
112
113ATF_TC(unlinkat_fderr2);
114ATF_TC_HEAD(unlinkat_fderr2, tc)
115{
116	atf_tc_set_md_var(tc, "descr", "See that unlinkat fails with bad fdat");
117}
118ATF_TC_BODY(unlinkat_fderr2, tc)
119{
120	int dfd;
121	int fd;
122	char cwd[MAXPATHLEN];
123
124	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
125	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
126	ATF_REQUIRE(close(fd) == 0);
127
128	ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1);
129	ATF_REQUIRE(unlinkat(dfd, BASEFILE, 0) == -1);
130	ATF_REQUIRE(close(dfd) == 0);
131}
132
133ATF_TC(unlinkat_fderr3);
134ATF_TC_HEAD(unlinkat_fderr3, tc)
135{
136	atf_tc_set_md_var(tc, "descr", "See that unlinkat fails with fd as -1");
137}
138ATF_TC_BODY(unlinkat_fderr3, tc)
139{
140	int fd;
141
142	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
143	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
144	ATF_REQUIRE(close(fd) == 0);
145
146	ATF_REQUIRE(unlinkat(-1, FILE, 0) == -1);
147}
148
149ATF_TC(unlinkat_dir);
150ATF_TC_HEAD(unlinkat_dir, tc)
151{
152	atf_tc_set_md_var(tc, "descr",
153			  "See that unlinkat can remove directories");
154}
155ATF_TC_BODY(unlinkat_dir, tc)
156{
157	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
158
159	ATF_REQUIRE(unlinkat(AT_FDCWD, DIR, 0) == -1);
160	ATF_REQUIRE(errno == EPERM);
161	ATF_REQUIRE(unlinkat(AT_FDCWD, DIR, AT_REMOVEDIR) == 0);
162}
163
164ATF_TP_ADD_TCS(tp)
165{
166
167	ATF_TP_ADD_TC(tp, unlinkat_fd);
168	ATF_TP_ADD_TC(tp, unlinkat_fdcwd);
169	ATF_TP_ADD_TC(tp, unlinkat_fdcwderr);
170	ATF_TP_ADD_TC(tp, unlinkat_fderr1);
171	ATF_TP_ADD_TC(tp, unlinkat_fderr2);
172	ATF_TP_ADD_TC(tp, unlinkat_fderr3);
173	ATF_TP_ADD_TC(tp, unlinkat_dir);
174
175	return atf_no_error();
176}
177