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 getxattr(2) and make sure getxattr(2) handles error
27 * conditions correctly.
28 *
29 * There are 4 test cases:
30 * 1. Get an non-existing attribute,
31 * getxattr(2) should return -1 and set errno to ENODATA
32 * 2. Buffer size is smaller than attribute value size,
33 * getxattr(2) should return -1 and set errno to ERANGE
34 * 3. Get attribute, getxattr(2) should succeed
35 * 4. Verify the attribute got by getxattr(2) is same as the value we set
36 */
37
38 #include "config.h"
39 #include <sys/types.h>
40 #include <sys/stat.h>
41 #include <errno.h>
42 #include <fcntl.h>
43 #include <unistd.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #ifdef HAVE_SYS_XATTR_H
48 # include <sys/xattr.h>
49 #endif
50 #include "test.h"
51 #include "safe_macros.h"
52
53 char *TCID = "getxattr01";
54
55 #ifdef HAVE_SYS_XATTR_H
56 #define XATTR_TEST_KEY "user.testkey"
57 #define XATTR_TEST_VALUE "this is a test value"
58 #define XATTR_TEST_VALUE_SIZE 20
59 #define BUFFSIZE 64
60
61 static void setup(void);
62 static void cleanup(void);
63
64 char filename[BUFSIZ];
65
66 struct test_case {
67 char *fname;
68 char *key;
69 char *value;
70 size_t size;
71 int exp_err;
72 };
73 struct test_case tc[] = {
74 { /* case 00, get non-existing attribute */
75 .fname = filename,
76 .key = "user.nosuchkey",
77 .value = NULL,
78 .size = BUFFSIZE - 1,
79 .exp_err = ENODATA,
80 },
81 { /* case 01, small value buffer */
82 .fname = filename,
83 .key = XATTR_TEST_KEY,
84 .value = NULL,
85 .size = 1,
86 .exp_err = ERANGE,
87 },
88 { /* case 02, get existing attribute */
89 .fname = filename,
90 .key = XATTR_TEST_KEY,
91 .value = NULL,
92 .size = BUFFSIZE - 1,
93 .exp_err = 0,
94 },
95 };
96
97 int TST_TOTAL = sizeof(tc) / sizeof(tc[0]) + 1;
98
main(int argc,char * argv[])99 int main(int argc, char *argv[])
100 {
101 int lc;
102 int i;
103
104 tst_parse_opts(argc, argv, NULL, NULL);
105
106 setup();
107
108 for (lc = 0; TEST_LOOPING(lc); lc++) {
109 tst_count = 0;
110
111 for (i = 0; i < ARRAY_SIZE(tc); i++) {
112 TEST(getxattr(tc[i].fname, tc[i].key, tc[i].value,
113 tc[i].size));
114
115 if (TEST_ERRNO == tc[i].exp_err) {
116 tst_resm(TPASS | TTERRNO, "expected behavior");
117 } else {
118 tst_resm(TFAIL | TTERRNO, "unexpected behavior"
119 "- expected errno %d - Got",
120 tc[i].exp_err);
121 }
122 }
123
124 if (TEST_RETURN != XATTR_TEST_VALUE_SIZE) {
125 tst_resm(TFAIL,
126 "getxattr() returned wrong size %ld expected %d",
127 TEST_RETURN, XATTR_TEST_VALUE_SIZE);
128 continue;
129 }
130
131 if (memcmp(tc[i - 1].value, XATTR_TEST_VALUE, XATTR_TEST_VALUE_SIZE))
132 tst_resm(TFAIL, "Wrong value, expect \"%s\" got \"%s\"",
133 XATTR_TEST_VALUE, tc[i - 1].value);
134 else
135 tst_resm(TPASS, "Got the right value");
136 }
137
138 cleanup();
139 tst_exit();
140 }
141
setup(void)142 static void setup(void)
143 {
144 int fd;
145 int i;
146
147 tst_require_root();
148
149 tst_tmpdir();
150
151 /* Create test file and setup initial xattr */
152 snprintf(filename, BUFSIZ, "getxattr01testfile");
153 fd = SAFE_CREAT(cleanup, filename, 0644);
154 close(fd);
155 if (setxattr(filename, XATTR_TEST_KEY, XATTR_TEST_VALUE,
156 strlen(XATTR_TEST_VALUE), XATTR_CREATE) == -1) {
157 if (errno == ENOTSUP) {
158 tst_brkm(TCONF, cleanup, "No xattr support in fs or "
159 "mount without user_xattr option");
160 }
161 }
162
163 /* Prepare test cases */
164 for (i = 0; i < ARRAY_SIZE(tc); i++) {
165 tc[i].value = malloc(BUFFSIZE);
166 if (tc[i].value == NULL) {
167 tst_brkm(TBROK | TERRNO, cleanup,
168 "Cannot allocate memory");
169 }
170 }
171
172 TEST_PAUSE;
173 }
174
cleanup(void)175 static void cleanup(void)
176 {
177 tst_rmdir();
178 }
179 #else /* HAVE_SYS_XATTR_H */
main(int argc,char * argv[])180 int main(int argc, char *argv[])
181 {
182 tst_brkm(TCONF, NULL, "<sys/xattr.h> does not exist.");
183 }
184 #endif
185