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1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include <fcntl.h>
18 #include <sys/types.h>
19 #include <sys/xattr.h>
20 
21 #include <android-base/file.h>
22 #include <gtest/gtest.h>
23 
TEST(sys_xattr,setxattr)24 TEST(sys_xattr, setxattr) {
25   TemporaryFile tf;
26   char buf[10];
27   ASSERT_EQ(0, setxattr(tf.path, "user.foo", "bar", 4, 0));
28   ASSERT_EQ(4, getxattr(tf.path, "user.foo", buf, sizeof(buf)));
29   ASSERT_STREQ("bar", buf);
30   buf[0] = '\0';
31   ASSERT_EQ(4, lgetxattr(tf.path, "user.foo", buf, sizeof(buf)));
32   ASSERT_STREQ("bar", buf);
33 }
34 
TEST(sys_xattr,fsetxattr)35 TEST(sys_xattr, fsetxattr) {
36   TemporaryFile tf;
37   char buf[10];
38   ASSERT_EQ(0, fsetxattr(tf.fd, "user.foo", "bar", 4, 0));
39   ASSERT_EQ(4, fgetxattr(tf.fd, "user.foo", buf, sizeof(buf)));
40   ASSERT_STREQ("bar", buf);
41 }
42 
TEST(sys_xattr,fsetxattr_zerobuf)43 TEST(sys_xattr, fsetxattr_zerobuf) {
44   TemporaryFile tf;
45   char buf[10];
46   ASSERT_EQ(0, fsetxattr(tf.fd, "user.foo", "", 0, 0));
47   ASSERT_EQ(0, fgetxattr(tf.fd, "user.foo", buf, sizeof(buf)));
48 }
49 
TEST(sys_xattr,fsetxattr_toosmallbuf)50 TEST(sys_xattr, fsetxattr_toosmallbuf) {
51   TemporaryFile tf;
52   char buf[10];
53   ASSERT_EQ(0, fsetxattr(tf.fd, "user.foo", "01234567890123456789", 21, 0));
54   ASSERT_EQ(-1, fgetxattr(tf.fd, "user.foo", buf, sizeof(buf)));
55   ASSERT_EQ(ERANGE, errno);
56 }
57 
TEST(sys_xattr,fsetxattr_invalidfd)58 TEST(sys_xattr, fsetxattr_invalidfd) {
59   char buf[10];
60   errno = 0;
61   ASSERT_EQ(-1, fsetxattr(65535, "user.foo", "0123", 5, 0));
62   ASSERT_EQ(EBADF, errno);
63   errno = 0;
64   ASSERT_EQ(-1, fgetxattr(65535, "user.foo", buf, sizeof(buf)));
65   ASSERT_EQ(EBADF, errno);
66 }
67 
TEST(sys_xattr,fsetxattr_with_opath)68 TEST(sys_xattr, fsetxattr_with_opath) {
69   TemporaryFile tf;
70   int fd = open(tf.path, O_PATH);
71   ASSERT_NE(-1, fd);
72 
73   int res = fsetxattr(fd, "user.foo", "bar", 4, 0);
74 #if defined(__BIONIC__)
75   char buf[10];
76   ASSERT_EQ(0, res);
77   ASSERT_EQ(4, fgetxattr(fd, "user.foo", buf, sizeof(buf)));
78   ASSERT_STREQ("bar", buf);
79 #else
80   ASSERT_EQ(-1, res);
81   ASSERT_EQ(EBADF, errno);
82 #endif
83   close(fd);
84 }
85 
TEST(sys_xattr,fsetxattr_with_opath_toosmall)86 TEST(sys_xattr, fsetxattr_with_opath_toosmall) {
87   TemporaryFile tf;
88   int fd = open(tf.path, O_PATH);
89   ASSERT_NE(-1, fd);
90 
91   int res = fsetxattr(fd, "user.foo", "01234567890123456789", 21, 0);
92 #if defined(__BIONIC__)
93   char buf[10];
94   ASSERT_EQ(0, res);
95   ASSERT_EQ(-1, fgetxattr(fd, "user.foo", buf, sizeof(buf)));
96   ASSERT_EQ(ERANGE, errno);
97 #else
98   ASSERT_EQ(-1, res);
99   ASSERT_EQ(EBADF, errno);
100 #endif
101   close(fd);
102 }
103 
TEST(sys_xattr,flistattr)104 TEST(sys_xattr, flistattr) {
105   TemporaryFile tf;
106   char buf[65536];  // 64kB is max possible xattr list size. See "man 7 xattr".
107   ASSERT_EQ(0, fsetxattr(tf.fd, "user.foo", "bar", 4, 0));
108   ssize_t result = flistxattr(tf.fd, buf, sizeof(buf));
109   ASSERT_TRUE(result >= 9);
110   ASSERT_TRUE(memmem(buf, sizeof(buf), "user.foo", 9) != nullptr);
111 }
112 
TEST(sys_xattr,flistattr_opath)113 TEST(sys_xattr, flistattr_opath) {
114   TemporaryFile tf;
115   char buf[65536];  // 64kB is max possible xattr list size. See "man 7 xattr".
116   ASSERT_EQ(0, fsetxattr(tf.fd, "user.foo", "bar", 4, 0));
117   int fd = open(tf.path, O_PATH);
118   ASSERT_NE(-1, fd);
119   ssize_t res = flistxattr(fd, buf, sizeof(buf));
120 #if defined(__BIONIC__)
121   ASSERT_TRUE(res >= 9);
122   ASSERT_TRUE(static_cast<size_t>(res) <= sizeof(buf));
123   ASSERT_TRUE(memmem(buf, res, "user.foo", 9) != nullptr);
124 #else
125   ASSERT_EQ(-1, res);
126   ASSERT_EQ(EBADF, errno);
127 #endif
128   close(fd);
129 }
130