1 /* $NetBSD: t_fchownat.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_fchownat.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 <pwd.h>
43 #include <sys/param.h>
44 #ifdef __FreeBSD__
45 #include <sys/stat.h>
46 #endif
47
48 #define DIR "dir"
49 #define FILE "dir/fchownat"
50 #define BASEFILE "fchownat"
51 #define LINK "dir/symlink"
52 #define BASELINK "symlink"
53 #define FILEERR "dir/fchownaterr"
54 #define USER "nobody"
55
56 static int getuser(uid_t *, gid_t *);
57
getuser(uid_t * uid,gid_t * gid)58 static int getuser(uid_t *uid, gid_t *gid)
59 {
60 struct passwd *pw;
61
62 if ((pw = getpwnam(USER)) == NULL)
63 return -1;
64
65 *uid = pw->pw_uid;
66 *gid = pw->pw_gid;
67
68 return 0;
69 }
70
71 ATF_TC(fchownat_fd);
ATF_TC_HEAD(fchownat_fd,tc)72 ATF_TC_HEAD(fchownat_fd, tc)
73 {
74 atf_tc_set_md_var(tc, "descr", "See that fchownat works with fd");
75 atf_tc_set_md_var(tc, "require.user", "root");
76 }
ATF_TC_BODY(fchownat_fd,tc)77 ATF_TC_BODY(fchownat_fd, tc)
78 {
79 int dfd;
80 int fd;
81 uid_t uid;
82 gid_t gid;
83 struct stat st;
84
85 ATF_REQUIRE(getuser(&uid, &gid) == 0);
86 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
87 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
88 ATF_REQUIRE(close(fd) == 0);
89
90 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
91 ATF_REQUIRE(fchownat(dfd, BASEFILE, uid, gid, 0) == 0);
92 ATF_REQUIRE(close(dfd) == 0);
93
94 ATF_REQUIRE(stat(FILE, &st) == 0);
95 ATF_REQUIRE(st.st_uid == uid);
96 ATF_REQUIRE(st.st_gid == gid);
97 }
98
99 ATF_TC(fchownat_fdcwd);
ATF_TC_HEAD(fchownat_fdcwd,tc)100 ATF_TC_HEAD(fchownat_fdcwd, tc)
101 {
102 atf_tc_set_md_var(tc, "descr",
103 "See that fchownat works with fd as AT_FDCWD");
104 atf_tc_set_md_var(tc, "require.user", "root");
105 }
ATF_TC_BODY(fchownat_fdcwd,tc)106 ATF_TC_BODY(fchownat_fdcwd, tc)
107 {
108 int fd;
109 uid_t uid;
110 gid_t gid;
111 struct stat st;
112
113 ATF_REQUIRE(getuser(&uid, &gid) == 0);
114 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
115 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
116 ATF_REQUIRE(close(fd) == 0);
117
118 ATF_REQUIRE(chdir(DIR) == 0);
119 ATF_REQUIRE(fchownat(AT_FDCWD, BASEFILE, uid, gid, 0) == 0);
120
121 ATF_REQUIRE(stat(BASEFILE, &st) == 0);
122 ATF_REQUIRE(st.st_uid == uid);
123 ATF_REQUIRE(st.st_gid == gid);
124 }
125
126 ATF_TC(fchownat_fdcwderr);
ATF_TC_HEAD(fchownat_fdcwderr,tc)127 ATF_TC_HEAD(fchownat_fdcwderr, tc)
128 {
129 atf_tc_set_md_var(tc, "descr",
130 "See that fchownat fails with fd as AT_FDCWD and bad path");
131 atf_tc_set_md_var(tc, "require.user", "root");
132 }
ATF_TC_BODY(fchownat_fdcwderr,tc)133 ATF_TC_BODY(fchownat_fdcwderr, tc)
134 {
135 uid_t uid;
136 gid_t gid;
137
138 ATF_REQUIRE(getuser(&uid, &gid) == 0);
139 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
140 ATF_REQUIRE(fchownat(AT_FDCWD, FILEERR, uid, gid, 0) == -1);
141 }
142
143 ATF_TC(fchownat_fderr1);
ATF_TC_HEAD(fchownat_fderr1,tc)144 ATF_TC_HEAD(fchownat_fderr1, tc)
145 {
146 atf_tc_set_md_var(tc, "descr", "See that fchownat fail with bad path");
147 atf_tc_set_md_var(tc, "require.user", "root");
148 }
ATF_TC_BODY(fchownat_fderr1,tc)149 ATF_TC_BODY(fchownat_fderr1, tc)
150 {
151 int dfd;
152 uid_t uid;
153 gid_t gid;
154
155 ATF_REQUIRE(getuser(&uid, &gid) == 0);
156 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
157 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
158 ATF_REQUIRE(fchownat(dfd, FILEERR, uid, gid, 0) == -1);
159 ATF_REQUIRE(close(dfd) == 0);
160 }
161
162 ATF_TC(fchownat_fderr2);
ATF_TC_HEAD(fchownat_fderr2,tc)163 ATF_TC_HEAD(fchownat_fderr2, tc)
164 {
165 atf_tc_set_md_var(tc, "descr", "See that fchownat fails with bad fdat");
166 atf_tc_set_md_var(tc, "require.user", "root");
167 }
ATF_TC_BODY(fchownat_fderr2,tc)168 ATF_TC_BODY(fchownat_fderr2, tc)
169 {
170 int dfd;
171 int fd;
172 char cwd[MAXPATHLEN];
173 uid_t uid;
174 gid_t gid;
175
176 ATF_REQUIRE(getuser(&uid, &gid) == 0);
177 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
178 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
179 ATF_REQUIRE(close(fd) == 0);
180
181 ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1);
182 ATF_REQUIRE(fchownat(dfd, BASEFILE, uid, gid, 0) == -1);
183 ATF_REQUIRE(close(dfd) == 0);
184 }
185
186 ATF_TC(fchownat_fderr3);
ATF_TC_HEAD(fchownat_fderr3,tc)187 ATF_TC_HEAD(fchownat_fderr3, tc)
188 {
189 atf_tc_set_md_var(tc, "descr", "See that fchownat fails with fd as -1");
190 atf_tc_set_md_var(tc, "require.user", "root");
191 }
ATF_TC_BODY(fchownat_fderr3,tc)192 ATF_TC_BODY(fchownat_fderr3, tc)
193 {
194 int fd;
195 uid_t uid;
196 gid_t gid;
197
198 ATF_REQUIRE(getuser(&uid, &gid) == 0);
199 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
200 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
201 ATF_REQUIRE(close(fd) == 0);
202
203 ATF_REQUIRE(fchownat(-1, FILE, uid, gid, 0) == -1);
204 }
205
206 ATF_TC(fchownat_fdlink);
ATF_TC_HEAD(fchownat_fdlink,tc)207 ATF_TC_HEAD(fchownat_fdlink, tc)
208 {
209 atf_tc_set_md_var(tc, "descr", "See that fchownat works on symlink");
210 atf_tc_set_md_var(tc, "require.user", "root");
211 }
ATF_TC_BODY(fchownat_fdlink,tc)212 ATF_TC_BODY(fchownat_fdlink, tc)
213 {
214 int dfd;
215 uid_t uid;
216 gid_t gid;
217 struct stat st;
218
219 ATF_REQUIRE(getuser(&uid, &gid) == 0);
220 ATF_REQUIRE(mkdir(DIR, 0755) == 0);
221 ATF_REQUIRE(symlink(FILE, LINK) == 0); /* Target does not exists */
222
223 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
224
225 ATF_REQUIRE(fchownat(dfd, BASELINK, uid, gid, 0) == -1);
226 ATF_REQUIRE(errno == ENOENT);
227
228 ATF_REQUIRE(fchownat(dfd, BASELINK, uid, gid,
229 AT_SYMLINK_NOFOLLOW) == 0);
230
231 ATF_REQUIRE(close(dfd) == 0);
232
233 ATF_REQUIRE(lstat(LINK, &st) == 0);
234 ATF_REQUIRE(st.st_uid == uid);
235 ATF_REQUIRE(st.st_gid == gid);
236 }
237
ATF_TP_ADD_TCS(tp)238 ATF_TP_ADD_TCS(tp)
239 {
240
241 ATF_TP_ADD_TC(tp, fchownat_fd);
242 ATF_TP_ADD_TC(tp, fchownat_fdcwd);
243 ATF_TP_ADD_TC(tp, fchownat_fdcwderr);
244 ATF_TP_ADD_TC(tp, fchownat_fderr1);
245 ATF_TP_ADD_TC(tp, fchownat_fderr2);
246 ATF_TP_ADD_TC(tp, fchownat_fderr3);
247 ATF_TP_ADD_TC(tp, fchownat_fdlink);
248
249 return atf_no_error();
250 }
251