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 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 51 TEST(getauxval, unexpected_values) { 52 ASSERT_EQ((unsigned long int) 0, getauxval(0xdeadbeef)); 53 } 54 55 #endif /* GETAUXVAL_CAN_COMPILE */ 56
