1 /*
2 * Copyright (C) 2011 Red Hat, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it
13 * is free of the rightful claim of any third person regarding
14 * infringement or the like. Any license provided herein, whether
15 * implied or otherwise, applies only to this software file. Patent
16 * licenses, if any, provided herein do not apply to combinations of
17 * this program with other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 * 02110-1301, USA.
23 */
24
25 /*
26 * In the user.* namespace, only regular files and directories can
27 * have extended attributes. Otherwise setxattr(2) will return -1
28 * and set errno to EPERM.
29 *
30 * There are 7 test cases:
31 * 1. Set attribute to a regular file, setxattr(2) should succeed
32 * 2. Set attribute to a directory, setxattr(2) should succeed
33 * 3. Set attribute to a symlink which points to the regular file,
34 * setxattr(2) should return -1 and set errno to EEXIST
35 * 4. Set attribute to a FIFO, setxattr(2) should return -1 and set
36 * errno to EPERM
37 * 5. Set attribute to a char special file, setxattr(2) should
38 * return -1 and set errno to EPERM
39 * 6. Set attribute to a block special file, setxattr(2) should
40 * return -1 and set errno to EPERM
41 * 7. Set attribute to a UNIX domain socket, setxattr(2) should
42 * return -1 and set errno to EPERM
43 */
44
45 #include "config.h"
46 #include <sys/types.h>
47 #include <sys/stat.h>
48 #include <sys/wait.h>
49 #include <errno.h>
50 #include <fcntl.h>
51 #include <unistd.h>
52 #include <signal.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #ifdef HAVE_ATTR_XATTR_H
57 #include <attr/xattr.h>
58 #endif
59 #include "test.h"
60
61 char *TCID = "setxattr02";
62
63 #ifdef HAVE_ATTR_XATTR_H
64 #define XATTR_TEST_KEY "user.testkey"
65 #define XATTR_TEST_VALUE "this is a test value"
66 #define XATTR_TEST_VALUE_SIZE 20
67
68 #define FILENAME "setxattr02testfile"
69 #define DIRNAME "setxattr02testdir"
70 #define SYMLINK "setxattr02symlink"
71 #define FIFO "setxattr02fifo"
72 #define CHR "setxattr02chr"
73 #define BLK "setxattr02blk"
74 #define SOCK "setxattr02sock"
75
76 static void setup(void);
77 static void cleanup(void);
78
79 struct test_case {
80 char *fname;
81 char *key;
82 char *value;
83 size_t size;
84 int flags;
85 int exp_err;
86 };
87 static struct test_case tc[] = {
88 { /* case 00, set attr to reg */
89 .fname = FILENAME,
90 .key = XATTR_TEST_KEY,
91 .value = XATTR_TEST_VALUE,
92 .size = XATTR_TEST_VALUE_SIZE,
93 .flags = XATTR_CREATE,
94 .exp_err = 0,
95 },
96 { /* case 01, set attr to dir */
97 .fname = DIRNAME,
98 .key = XATTR_TEST_KEY,
99 .value = XATTR_TEST_VALUE,
100 .size = XATTR_TEST_VALUE_SIZE,
101 .flags = XATTR_CREATE,
102 .exp_err = 0,
103 },
104 { /* case 02, set attr to symlink */
105 .fname = SYMLINK,
106 .key = XATTR_TEST_KEY,
107 .value = XATTR_TEST_VALUE,
108 .size = XATTR_TEST_VALUE_SIZE,
109 .flags = XATTR_CREATE,
110 .exp_err = EEXIST,
111 },
112 { /* case 03, set attr to fifo */
113 .fname = FIFO,
114 .key = XATTR_TEST_KEY,
115 .value = XATTR_TEST_VALUE,
116 .size = XATTR_TEST_VALUE_SIZE,
117 .flags = XATTR_CREATE,
118 .exp_err = EPERM,
119 },
120 { /* case 04, set attr to character special */
121 .fname = CHR,
122 .key = XATTR_TEST_KEY,
123 .value = XATTR_TEST_VALUE,
124 .size = XATTR_TEST_VALUE_SIZE,
125 .flags = XATTR_CREATE,
126 .exp_err = EPERM,
127 },
128 { /* case 05, set attr to block special */
129 .fname = BLK,
130 .key = XATTR_TEST_KEY,
131 .value = XATTR_TEST_VALUE,
132 .size = XATTR_TEST_VALUE_SIZE,
133 .flags = XATTR_CREATE,
134 .exp_err = EPERM,
135 },
136 { /* case 06, set attr to socket */
137 .fname = SOCK,
138 .key = XATTR_TEST_KEY,
139 .value = XATTR_TEST_VALUE,
140 .size = XATTR_TEST_VALUE_SIZE,
141 .flags = XATTR_CREATE,
142 .exp_err = EPERM,
143 },
144 };
145
146 int TST_TOTAL = sizeof(tc) / sizeof(tc[0]);
147
main(int argc,char * argv[])148 int main(int argc, char *argv[])
149 {
150 int lc;
151 int i;
152
153 tst_parse_opts(argc, argv, NULL, NULL);
154
155 setup();
156
157 for (lc = 0; TEST_LOOPING(lc); lc++) {
158 tst_count = 0;
159
160 for (i = 0; i < TST_TOTAL; i++) {
161 TEST(setxattr(tc[i].fname, tc[i].key, tc[i].value,
162 tc[i].size, tc[i].flags));
163
164 if (TEST_ERRNO == tc[i].exp_err) {
165 tst_resm(TPASS | TTERRNO, "expected behavior");
166 } else {
167 tst_resm(TFAIL | TTERRNO, "unexpected behavior "
168 "- expected errno %d - Got",
169 tc[i].exp_err);
170 }
171 }
172 }
173
174 cleanup();
175 tst_exit();
176 }
177
setup(void)178 static void setup(void)
179 {
180 int fd;
181 dev_t dev;
182
183 tst_require_root();
184
185 tst_tmpdir();
186
187 /* Test for xattr support */
188 fd = creat("testfile", 0644);
189 if (fd == -1)
190 tst_brkm(TBROK | TERRNO, cleanup, "Create testfile failed");
191 close(fd);
192 if (setxattr("testfile", "user.test", "test", 4, XATTR_CREATE) == -1)
193 if (errno == ENOTSUP)
194 tst_brkm(TCONF, cleanup, "No xattr support in fs or "
195 "mount without user_xattr option");
196 unlink("testfile");
197
198 /* Create test files */
199 fd = creat(FILENAME, 0644);
200 if (fd == -1)
201 tst_brkm(TBROK | TERRNO, cleanup, "Create test file(%s) failed",
202 FILENAME);
203 close(fd);
204
205 if (mkdir(DIRNAME, 0644) == -1)
206 tst_brkm(TBROK | TERRNO, cleanup, "Create test dir(%s) failed",
207 DIRNAME);
208
209 if (symlink(FILENAME, SYMLINK) == -1)
210 tst_brkm(TBROK | TERRNO, cleanup, "Create symlink(%s->%s)"
211 " failed", SYMLINK, FILENAME);
212
213 if (mknod(FIFO, S_IFIFO | 0777, 0) == -1)
214 tst_brkm(TBROK | TERRNO, cleanup, "Create FIFO(%s) failed",
215 FIFO);
216
217 dev = makedev(1, 3);
218 if (mknod(CHR, S_IFCHR | 0777, dev) == -1)
219 tst_brkm(TBROK | TERRNO, cleanup, "Create char special(%s)"
220 " failed", CHR);
221
222 if (mknod(BLK, S_IFBLK | 0777, 0) == -1)
223 tst_brkm(TBROK | TERRNO, cleanup, "Create block special(%s)"
224 " failed", BLK);
225
226 if (mknod(SOCK, S_IFSOCK | 0777, 0) == -1)
227 tst_brkm(TBROK | TERRNO, cleanup, "Create socket(%s) failed",
228 SOCK);
229
230 TEST_PAUSE;
231 }
232
cleanup(void)233 static void cleanup(void)
234 {
235 tst_rmdir();
236 }
237 #else /* HAVE_ATTR_XATTR_H */
main(int argc,char * argv[])238 int main(int argc, char *argv[])
239 {
240 tst_brkm(TCONF, NULL, "<attr/xattr.h> does not exist.");
241 }
242 #endif
243