78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ASLR_TEST_H
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#define ASLR_TEST_H
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#include <cmath>
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#include <errno.h>
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#include <fstream>
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#include <iostream>
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#include <stdint.h>
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#include <string>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <unordered_set>
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#include <gtest/gtest.h>
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#define MAX_ADDR_LEN 256
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#define PROCFS_PATH "/proc/sys/vm/mmap_rnd_bits"
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#define PROCFS_COMPAT_PATH "/proc/sys/vm/mmap_rnd_compat_bits"
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#define SCRAPE_PATH_64 "/data/nativetest64/scrape_mmap_addr/scrape_mmap_addr"
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#define SCRAPE_PATH_32 "/data/nativetest/scrape_mmap_addr/scrape_mmap_addr"
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#define SCRAPE_LIB_64 "/system/bin/linker64"
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#define SCRAPE_LIB_32 "/system/bin/linker"
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class AslrMmapTest : public ::testing::Test {
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protected:
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static void SetUpTestCase();
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static const char *path;
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static const char *lib;
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static unsigned int def, min, max;
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static bool compat, user32;
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static unsigned int def_cmpt, min_cmpt, max_cmpt;
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void TearDown();
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};
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/*
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* gets the current mmap_rnd_bits value. requires root.
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*/
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unsigned int get_mmap_rnd_bits(bool compat);
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/*
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* sets the corresponding mmap_rnd_bits variable, returns false if couldn't
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* change. requires root.
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*/
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bool set_mmap_rnd_bits(unsigned int new_val, bool compat);
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/*
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* scrape_addr - get the raw starting address from /proc/child_pid/mmaps
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*/
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std::string scrape_addr(const char *exec_name, const char *lib_match);
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/*
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* forks off sample_size processes and records the starting address of the
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* indicated library as reported by exec_name. Reports entropy observed among
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* recorded samples.
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*/
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unsigned int calc_mmap_entropy(const char *exec_name, const char *lib_match, size_t samp_sz);
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#endif //ASLR_TEST_H
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