1 /*
2 * Copyright (C) 2013 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 <sys/cdefs.h>
18 #include <features.h>
19 #include <gtest/gtest.h>
20
21 // getauxval() was only added as of glibc version 2.16.
22 // See: http://lwn.net/Articles/519085/
23 // Don't try to compile this code on older glibc versions.
24
25 #if defined(__BIONIC__)
26 #define GETAUXVAL_CAN_COMPILE 1
27 #elif defined(__GLIBC_PREREQ)
28 #if __GLIBC_PREREQ(2, 16)
29 #define GETAUXVAL_CAN_COMPILE 1
30 #endif
31 #endif
32
33 #if defined(GETAUXVAL_CAN_COMPILE)
34
35 #include <sys/auxv.h>
36
TEST(getauxval,expected_values)37 TEST(getauxval, expected_values) {
38 ASSERT_EQ((unsigned long int) 0, getauxval(AT_SECURE));
39 ASSERT_EQ(getuid(), getauxval(AT_UID));
40 ASSERT_EQ(geteuid(), getauxval(AT_EUID));
41 ASSERT_EQ(getgid(), getauxval(AT_GID));
42 ASSERT_EQ(getegid(), getauxval(AT_EGID));
43 ASSERT_EQ((unsigned long int) getpagesize(), getauxval(AT_PAGESZ));
44
45 ASSERT_NE((unsigned long int) 0, getauxval(AT_PHDR));
46 ASSERT_NE((unsigned long int) 0, getauxval(AT_PHNUM));
47 ASSERT_NE((unsigned long int) 0, getauxval(AT_ENTRY));
48 ASSERT_NE((unsigned long int) 0, getauxval(AT_PAGESZ));
49 }
50
TEST(getauxval,unexpected_values)51 TEST(getauxval, unexpected_values) {
52 ASSERT_EQ((unsigned long int) 0, getauxval(0xdeadbeef));
53 }
54
55 #endif /* GETAUXVAL_CAN_COMPILE */
56