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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sys/cdefs.h>
#include <features.h>
#include <gtest/gtest.h>
// getauxval() was only added as of glibc version 2.16.
// See: http://lwn.net/Articles/519085/
// Don't try to compile this code on older glibc versions.
#if defined(__BIONIC__)
#define GETAUXVAL_CAN_COMPILE 1
#elif defined(__GLIBC_PREREQ)
#if __GLIBC_PREREQ(2, 16)
#define GETAUXVAL_CAN_COMPILE 1
#endif
#endif
#if defined(GETAUXVAL_CAN_COMPILE)
#include <sys/auxv.h>
TEST(getauxval, expected_values) {
ASSERT_EQ((unsigned long int) 0, getauxval(AT_SECURE));
ASSERT_EQ(getuid(), getauxval(AT_UID));
ASSERT_EQ(geteuid(), getauxval(AT_EUID));
ASSERT_EQ(getgid(), getauxval(AT_GID));
ASSERT_EQ(getegid(), getauxval(AT_EGID));
ASSERT_EQ((unsigned long int) getpagesize(), getauxval(AT_PAGESZ));
ASSERT_NE((unsigned long int) 0, getauxval(AT_PHDR));
ASSERT_NE((unsigned long int) 0, getauxval(AT_PHNUM));
ASSERT_NE((unsigned long int) 0, getauxval(AT_ENTRY));
ASSERT_NE((unsigned long int) 0, getauxval(AT_PAGESZ));
}
TEST(getauxval, unexpected_values) {
ASSERT_EQ((unsigned long int) 0, getauxval(0xdeadbeef));
}
#endif /* GETAUXVAL_CAN_COMPILE */
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