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 * Basic tests for setxattr(2) and make sure setxattr(2) handles error
27 * conditions correctly.
28 *
29 * There are 7 test cases:
30 * 1. Any other flags being set except XATTR_CREATE and XATTR_REPLACE,
31 * setxattr(2) should return -1 and set errno to EINVAL
32 * 2. With XATTR_REPLACE flag set but the attribute does not exist,
33 * setxattr(2) should return -1 and set errno to ENOATTR
34 * 3. Create new attr with name length greater than XATTR_NAME_MAX(255)
35 * setxattr(2) should return -1 and set errno to ERANGE
36 * 4. Create new attr whose value length is greater than XATTR_SIZE_MAX(65536)
37 * setxattr(2) should return -1 and set errno to E2BIG
38 * 5. Create new attr whose value length is zero,
39 * setxattr(2) should succeed
40 * 6. Replace the attr value without XATTR_REPLACE flag being set,
41 * setxattr(2) should return -1 and set errno to EEXIST
42 * 7. Replace attr value with XATTR_REPLACE flag being set,
43 * setxattr(2) should succeed
44 */
45
46 #include "config.h"
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #include <sys/wait.h>
50 #include <errno.h>
51 #include <fcntl.h>
52 #include <unistd.h>
53 #include <signal.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 #ifdef HAVE_ATTR_XATTR_H
58 #include <attr/xattr.h>
59 #endif
60 #include "test.h"
61
62 char *TCID = "setxattr01";
63
64 #ifdef HAVE_ATTR_XATTR_H
65 #define XATTR_NAME_MAX 255
66 #define XATTR_NAME_LEN (XATTR_NAME_MAX + 2)
67 #define XATTR_SIZE_MAX 65536
68 #define XATTR_TEST_KEY "user.testkey"
69 #define XATTR_TEST_VALUE "this is a test value"
70 #define XATTR_TEST_VALUE_SIZE 20
71
72 static void setup(void);
73 static void cleanup(void);
74
75 char filename[BUFSIZ];
76 char long_key[XATTR_NAME_LEN];
77 char *long_value;
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 struct test_case tc[] = {
88 { /* case 00, invalid flags */
89 .fname = filename,
90 .key = XATTR_TEST_KEY,
91 .value = XATTR_TEST_VALUE,
92 .size = XATTR_TEST_VALUE_SIZE,
93 .flags = ~0,
94 .exp_err = EINVAL,
95 },
96 { /* case 01, replace non-existing attribute */
97 .fname = filename,
98 .key = XATTR_TEST_KEY,
99 .value = XATTR_TEST_VALUE,
100 .size = XATTR_TEST_VALUE_SIZE,
101 .flags = XATTR_REPLACE,
102 .exp_err = ENOATTR,
103 },
104 { /* case 02, long key name, key will be set in setup() */
105 .fname = filename,
106 .key = NULL,
107 .value = XATTR_TEST_VALUE,
108 .size = XATTR_TEST_VALUE_SIZE,
109 .flags = XATTR_CREATE,
110 .exp_err = ERANGE,
111 },
112 { /* case 03, long value, value will be set in setup() */
113 .fname = filename,
114 .key = XATTR_TEST_KEY,
115 .value = NULL,
116 .size = XATTR_SIZE_MAX + 1,
117 .flags = XATTR_CREATE,
118 .exp_err = E2BIG,
119 },
120 { /* case 04, zero length value */
121 .fname = filename,
122 .key = XATTR_TEST_KEY,
123 .value = XATTR_TEST_VALUE,
124 .size = 0,
125 .flags = XATTR_CREATE,
126 .exp_err = 0,
127 },
128 { /* case 05, create existing attribute */
129 .fname = filename,
130 .key = XATTR_TEST_KEY,
131 .value = XATTR_TEST_VALUE,
132 .size = XATTR_TEST_VALUE_SIZE,
133 .flags = XATTR_CREATE,
134 .exp_err = EEXIST,
135 },
136 { /* case 06, replace existing attribute */
137 .fname = filename,
138 .key = XATTR_TEST_KEY,
139 .value = XATTR_TEST_VALUE,
140 .size = XATTR_TEST_VALUE_SIZE,
141 .flags = XATTR_REPLACE,
142 .exp_err = 0,
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
182 tst_require_root();
183
184 tst_tmpdir();
185
186 /* Test for xattr support */
187 fd = creat("testfile", 0644);
188 if (fd == -1)
189 tst_brkm(TBROK | TERRNO, cleanup, "Create testfile failed");
190 close(fd);
191 if (setxattr("testfile", "user.test", "test", 4, XATTR_CREATE) == -1)
192 if (errno == ENOTSUP)
193 tst_brkm(TCONF, cleanup, "No xattr support in fs or "
194 "mount without user_xattr option");
195
196 /* Create test file */
197 snprintf(filename, BUFSIZ, "setxattr01testfile");
198 fd = creat(filename, 0644);
199 if (fd == -1)
200 tst_brkm(TBROK | TERRNO, cleanup, "Create test file(%s) failed",
201 filename);
202 close(fd);
203
204 /* Prepare test cases */
205 snprintf(long_key, 6, "%s", "user.");
206 memset(long_key + 5, 'k', XATTR_NAME_LEN - 5);
207 long_key[XATTR_NAME_LEN - 1] = '\0';
208 tc[2].key = long_key;
209
210 long_value = malloc(XATTR_SIZE_MAX + 2);
211 if (!long_value)
212 tst_brkm(TBROK | TERRNO, cleanup, "malloc failed");
213 memset(long_value, 'v', XATTR_SIZE_MAX + 2);
214 long_value[XATTR_SIZE_MAX + 1] = '\0';
215 tc[3].value = long_value;
216
217 TEST_PAUSE;
218 }
219
cleanup(void)220 static void cleanup(void)
221 {
222 tst_rmdir();
223 }
224 #else /* HAVE_ATTR_XATTR_H */
main(int argc,char * argv[])225 int main(int argc, char *argv[])
226 {
227 tst_brkm(TCONF, NULL, "<attr/xattr.h> does not exist.");
228 }
229 #endif
230