libprocinfo/process_map_test.cpp - LeafOS-Project/android_system_core - Gitiles

 /*
  * Copyright (C) 2018 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 <procinfo/process_map.h>

 #include <inttypes.h>
 #include <sys/mman.h>

 #include <string>
 #include <vector>

 #include <android-base/file.h>
 #include <android-base/stringprintf.h>

 #include <gtest/gtest.h>

 TEST(process_map, ReadMapFile) {
   std::string map_file = android::base::GetExecutableDirectory() + "/testdata/maps";
   std::vector<android::procinfo::MapInfo> maps;
   ASSERT_TRUE(android::procinfo::ReadMapFile(
       map_file,
       [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
           const char* name) { maps.emplace_back(start, end, flags, pgoff, inode, name); }));
   ASSERT_EQ(2043u, maps.size());
   ASSERT_EQ(maps[0].start, 0x12c00000ULL);
   ASSERT_EQ(maps[0].end, 0x2ac00000ULL);
   ASSERT_EQ(maps[0].flags, PROT_READ | PROT_WRITE);
   ASSERT_EQ(maps[0].pgoff, 0ULL);
   ASSERT_EQ(maps[0].inode, 10267643UL);
   ASSERT_EQ(maps[0].name, "[anon:dalvik-main space (region space)]");
   ASSERT_EQ(maps[876].start, 0x70e6c4f000ULL);
   ASSERT_EQ(maps[876].end, 0x70e6c6b000ULL);
   ASSERT_EQ(maps[876].flags, PROT_READ | PROT_EXEC);
   ASSERT_EQ(maps[876].pgoff, 0ULL);
   ASSERT_EQ(maps[876].inode, 2407UL);
   ASSERT_EQ(maps[876].name, "/system/lib64/libutils.so");
   ASSERT_EQ(maps[1260].start, 0x70e96fa000ULL);
   ASSERT_EQ(maps[1260].end, 0x70e96fb000ULL);
   ASSERT_EQ(maps[1260].flags, PROT_READ);
   ASSERT_EQ(maps[1260].pgoff, 0ULL);
   ASSERT_EQ(maps[1260].inode, 10266154UL);
   ASSERT_EQ(maps[1260].name,
             "[anon:dalvik-classes.dex extracted in memory from "
             "/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]");
 }

 TEST(process_map, ReadProcessMaps) {
   std::vector<android::procinfo::MapInfo> maps;
   ASSERT_TRUE(android::procinfo::ReadProcessMaps(
       getpid(),
       [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
           const char* name) { maps.emplace_back(start, end, flags, pgoff, inode, name); }));
   ASSERT_GT(maps.size(), 0u);
   maps.clear();
   ASSERT_TRUE(android::procinfo::ReadProcessMaps(getpid(), &maps));
   ASSERT_GT(maps.size(), 0u);
 }

 extern "C" void malloc_disable();
 extern "C" void malloc_enable();

 struct TestMapInfo {
   TestMapInfo() = default;
   TestMapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
               const char* new_name)
       : start(start), end(end), flags(flags), pgoff(pgoff), inode(inode) {
     strcpy(name, new_name);
   }
   uint64_t start = 0;
   uint64_t end = 0;
   uint16_t flags = 0;
   uint64_t pgoff = 0;
   ino_t inode = 0;
   char name[100] = {};
 };

 void VerifyReadMapFileAsyncSafe(const char* maps_data,
                                 const std::vector<TestMapInfo>& expected_info) {
   TemporaryFile tf;
   ASSERT_TRUE(android::base::WriteStringToFd(maps_data, tf.fd));

   std::vector<TestMapInfo> saved_info(expected_info.size());
   size_t num_maps = 0;

   auto callback = [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
                       const char* name) {
     if (num_maps != saved_info.size()) {
       TestMapInfo& saved = saved_info[num_maps];
       saved.start = start;
       saved.end = end;
       saved.flags = flags;
       saved.pgoff = pgoff;
       saved.inode = inode;
       strcpy(saved.name, name);
     }
     num_maps++;
   };

   std::vector<char> buffer(64 * 1024);

 #if defined(__BIONIC__)
   // Any allocations will block after this call.
   malloc_disable();
 #endif

   bool parsed =
       android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer.data(), buffer.size(), callback);

 #if defined(__BIONIC__)
   malloc_enable();
 #endif

   ASSERT_TRUE(parsed) << "Parsing of data failed:\n" << maps_data;
   ASSERT_EQ(expected_info.size(), num_maps);
   for (size_t i = 0; i < expected_info.size(); i++) {
     const TestMapInfo& expected = expected_info[i];
     const TestMapInfo& saved = saved_info[i];
     EXPECT_EQ(expected.start, saved.start);
     EXPECT_EQ(expected.end, saved.end);
     EXPECT_EQ(expected.flags, saved.flags);
     EXPECT_EQ(expected.pgoff, saved.pgoff);
     EXPECT_EQ(expected.inode, saved.inode);
     EXPECT_STREQ(expected.name, saved.name);
   }
 }

 TEST(process_map, ReadMapFileAsyncSafe_invalid) {
   std::vector<TestMapInfo> expected_info;

   VerifyReadMapFileAsyncSafe("12c00000-2ac00000", expected_info);
 }

 TEST(process_map, ReadMapFileAsyncSafe_single) {
   std::vector<TestMapInfo> expected_info;
   expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643,
                              "/lib/fake.so");

   VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so",
                              expected_info);
 }

 TEST(process_map, ReadMapFileAsyncSafe_single_with_newline) {
   std::vector<TestMapInfo> expected_info;
   expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643,
                              "/lib/fake.so");

   VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so\n",
                              expected_info);
 }

 TEST(process_map, ReadMapFileAsyncSafe_single_no_library) {
   std::vector<TestMapInfo> expected_info;
   expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 0xb00, 101, "");

   VerifyReadMapFileAsyncSafe("a0000-c0000 rwxp 00000b00 00:05 101", expected_info);
 }

 TEST(process_map, ReadMapFileAsyncSafe_multiple) {
   std::vector<TestMapInfo> expected_info;
   expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 1, 100, "");
   expected_info.emplace_back(0xd0000, 0xe0000, PROT_READ, 2, 101, "/lib/libsomething1.so");
   expected_info.emplace_back(0xf0000, 0x100000, PROT_WRITE, 3, 102, "/lib/libsomething2.so");
   expected_info.emplace_back(0x110000, 0x120000, PROT_EXEC, 4, 103, "[anon:something or another]");

   std::string map_data =
       "0a0000-0c0000 rwxp 00000001 00:05 100\n"
       "0d0000-0e0000 r--p 00000002 00:05 101  /lib/libsomething1.so\n"
       "0f0000-100000 -w-p 00000003 00:05 102  /lib/libsomething2.so\n"
       "110000-120000 --xp 00000004 00:05 103  [anon:something or another]\n";

   VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
 }

 TEST(process_map, ReadMapFileAsyncSafe_multiple_reads) {
   std::vector<TestMapInfo> expected_info;
   std::string map_data;
   uint64_t start = 0xa0000;
   for (size_t i = 0; i < 10000; i++) {
     map_data += android::base::StringPrintf("%" PRIx64 "-%" PRIx64 " r--p %zx 01:20 %zu fake.so\n",
                                             start, start + 0x1000, i, 1000 + i);
     expected_info.emplace_back(start, start + 0x1000, PROT_READ, i, 1000 + i, "fake.so");
   }

   VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
 }

 TEST(process_map, ReadMapFileAsyncSafe_buffer_nullptr) {
   size_t num_calls = 0;
   auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

 #if defined(__BIONIC__)
   // Any allocations will block after this call.
   malloc_disable();
 #endif

   bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", nullptr, 10, callback);

 #if defined(__BIONIC__)
   malloc_enable();
 #endif

   ASSERT_FALSE(parsed);
   EXPECT_EQ(0UL, num_calls);
 }

 TEST(process_map, ReadMapFileAsyncSafe_buffer_size_zero) {
   size_t num_calls = 0;
   auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

 #if defined(__BIONIC__)
   // Any allocations will block after this call.
   malloc_disable();
 #endif

   char buffer[10];
   bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, 0, callback);

 #if defined(__BIONIC__)
   malloc_enable();
 #endif

   ASSERT_FALSE(parsed);
   EXPECT_EQ(0UL, num_calls);
 }

 TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_no_calls) {
   size_t num_calls = 0;
   auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

 #if defined(__BIONIC__)
   // Any allocations will block after this call.
   malloc_disable();
 #endif

   char buffer[10];
   bool parsed =
       android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, sizeof(buffer), callback);

 #if defined(__BIONIC__)
   malloc_enable();
 #endif

   ASSERT_FALSE(parsed);
   EXPECT_EQ(0UL, num_calls);
 }

 TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_could_parse) {
   TemporaryFile tf;
   ASSERT_TRUE(android::base::WriteStringToFd(
       "0a0000-0c0000 rwxp 00000001 00:05 100    /fake/lib.so\n", tf.fd));

   size_t num_calls = 0;
   auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

 #if defined(__BIONIC__)
   // Any allocations will block after this call.
   malloc_disable();
 #endif

   char buffer[39];
   bool parsed = android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer, sizeof(buffer), callback);

 #if defined(__BIONIC__)
   malloc_enable();
 #endif

   ASSERT_FALSE(parsed);
   EXPECT_EQ(0UL, num_calls);
 }
	/*
	* Copyright (C) 2018 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 <procinfo/process_map.h>

	#include <inttypes.h>
	#include <sys/mman.h>

	#include <string>
	#include <vector>

	#include <android-base/file.h>
	#include <android-base/stringprintf.h>

	#include <gtest/gtest.h>

	TEST(process_map, ReadMapFile) {
	std::string map_file = android::base::GetExecutableDirectory() + "/testdata/maps";
	std::vector<android::procinfo::MapInfo> maps;
	ASSERT_TRUE(android::procinfo::ReadMapFile(
	map_file,
	[&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
	const char* name) { maps.emplace_back(start, end, flags, pgoff, inode, name); }));
	ASSERT_EQ(2043u, maps.size());
	ASSERT_EQ(maps[0].start, 0x12c00000ULL);
	ASSERT_EQ(maps[0].end, 0x2ac00000ULL);
	ASSERT_EQ(maps[0].flags, PROT_READ \| PROT_WRITE);
	ASSERT_EQ(maps[0].pgoff, 0ULL);
	ASSERT_EQ(maps[0].inode, 10267643UL);
	ASSERT_EQ(maps[0].name, "[anon:dalvik-main space (region space)]");
	ASSERT_EQ(maps[876].start, 0x70e6c4f000ULL);
	ASSERT_EQ(maps[876].end, 0x70e6c6b000ULL);
	ASSERT_EQ(maps[876].flags, PROT_READ \| PROT_EXEC);
	ASSERT_EQ(maps[876].pgoff, 0ULL);
	ASSERT_EQ(maps[876].inode, 2407UL);
	ASSERT_EQ(maps[876].name, "/system/lib64/libutils.so");
	ASSERT_EQ(maps[1260].start, 0x70e96fa000ULL);
	ASSERT_EQ(maps[1260].end, 0x70e96fb000ULL);
	ASSERT_EQ(maps[1260].flags, PROT_READ);
	ASSERT_EQ(maps[1260].pgoff, 0ULL);
	ASSERT_EQ(maps[1260].inode, 10266154UL);
	ASSERT_EQ(maps[1260].name,
	"[anon:dalvik-classes.dex extracted in memory from "
	"/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]");
	}

	TEST(process_map, ReadProcessMaps) {
	std::vector<android::procinfo::MapInfo> maps;
	ASSERT_TRUE(android::procinfo::ReadProcessMaps(
	getpid(),
	[&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
	const char* name) { maps.emplace_back(start, end, flags, pgoff, inode, name); }));
	ASSERT_GT(maps.size(), 0u);
	maps.clear();
	ASSERT_TRUE(android::procinfo::ReadProcessMaps(getpid(), &maps));
	ASSERT_GT(maps.size(), 0u);
	}

	extern "C" void malloc_disable();
	extern "C" void malloc_enable();

	struct TestMapInfo {
	TestMapInfo() = default;
	TestMapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
	const char* new_name)
	: start(start), end(end), flags(flags), pgoff(pgoff), inode(inode) {
	strcpy(name, new_name);
	}
	uint64_t start = 0;
	uint64_t end = 0;
	uint16_t flags = 0;
	uint64_t pgoff = 0;
	ino_t inode = 0;
	char name[100] = {};
	};

	void VerifyReadMapFileAsyncSafe(const char* maps_data,
	const std::vector<TestMapInfo>& expected_info) {
	TemporaryFile tf;
	ASSERT_TRUE(android::base::WriteStringToFd(maps_data, tf.fd));

	std::vector<TestMapInfo> saved_info(expected_info.size());
	size_t num_maps = 0;

	auto callback = [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
	const char* name) {
	if (num_maps != saved_info.size()) {
	TestMapInfo& saved = saved_info[num_maps];
	saved.start = start;
	saved.end = end;
	saved.flags = flags;
	saved.pgoff = pgoff;
	saved.inode = inode;
	strcpy(saved.name, name);
	}
	num_maps++;
	};

	std::vector<char> buffer(64 * 1024);

	#if defined(__BIONIC__)
	// Any allocations will block after this call.
	malloc_disable();
	#endif

	bool parsed =
	android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer.data(), buffer.size(), callback);

	#if defined(__BIONIC__)
	malloc_enable();
	#endif

	ASSERT_TRUE(parsed) << "Parsing of data failed:\n" << maps_data;
	ASSERT_EQ(expected_info.size(), num_maps);
	for (size_t i = 0; i < expected_info.size(); i++) {
	const TestMapInfo& expected = expected_info[i];
	const TestMapInfo& saved = saved_info[i];
	EXPECT_EQ(expected.start, saved.start);
	EXPECT_EQ(expected.end, saved.end);
	EXPECT_EQ(expected.flags, saved.flags);
	EXPECT_EQ(expected.pgoff, saved.pgoff);
	EXPECT_EQ(expected.inode, saved.inode);
	EXPECT_STREQ(expected.name, saved.name);
	}
	}

	TEST(process_map, ReadMapFileAsyncSafe_invalid) {
	std::vector<TestMapInfo> expected_info;

	VerifyReadMapFileAsyncSafe("12c00000-2ac00000", expected_info);
	}

	TEST(process_map, ReadMapFileAsyncSafe_single) {
	std::vector<TestMapInfo> expected_info;
	expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ \| PROT_WRITE, 0x100, 10267643,
	"/lib/fake.so");

	VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so",
	expected_info);
	}

	TEST(process_map, ReadMapFileAsyncSafe_single_with_newline) {
	std::vector<TestMapInfo> expected_info;
	expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ \| PROT_WRITE, 0x100, 10267643,
	"/lib/fake.so");

	VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so\n",
	expected_info);
	}

	TEST(process_map, ReadMapFileAsyncSafe_single_no_library) {
	std::vector<TestMapInfo> expected_info;
	expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ \| PROT_WRITE \| PROT_EXEC, 0xb00, 101, "");

	VerifyReadMapFileAsyncSafe("a0000-c0000 rwxp 00000b00 00:05 101", expected_info);
	}

	TEST(process_map, ReadMapFileAsyncSafe_multiple) {
	std::vector<TestMapInfo> expected_info;
	expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ \| PROT_WRITE \| PROT_EXEC, 1, 100, "");
	expected_info.emplace_back(0xd0000, 0xe0000, PROT_READ, 2, 101, "/lib/libsomething1.so");
	expected_info.emplace_back(0xf0000, 0x100000, PROT_WRITE, 3, 102, "/lib/libsomething2.so");
	expected_info.emplace_back(0x110000, 0x120000, PROT_EXEC, 4, 103, "[anon:something or another]");

	std::string map_data =
	"0a0000-0c0000 rwxp 00000001 00:05 100\n"
	"0d0000-0e0000 r--p 00000002 00:05 101 /lib/libsomething1.so\n"
	"0f0000-100000 -w-p 00000003 00:05 102 /lib/libsomething2.so\n"
	"110000-120000 --xp 00000004 00:05 103 [anon:something or another]\n";

	VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
	}

	TEST(process_map, ReadMapFileAsyncSafe_multiple_reads) {
	std::vector<TestMapInfo> expected_info;
	std::string map_data;
	uint64_t start = 0xa0000;
	for (size_t i = 0; i < 10000; i++) {
	map_data += android::base::StringPrintf("%" PRIx64 "-%" PRIx64 " r--p %zx 01:20 %zu fake.so\n",
	start, start + 0x1000, i, 1000 + i);
	expected_info.emplace_back(start, start + 0x1000, PROT_READ, i, 1000 + i, "fake.so");
	}

	VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
	}

	TEST(process_map, ReadMapFileAsyncSafe_buffer_nullptr) {
	size_t num_calls = 0;
	auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

	#if defined(__BIONIC__)
	// Any allocations will block after this call.
	malloc_disable();
	#endif

	bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", nullptr, 10, callback);

	#if defined(__BIONIC__)
	malloc_enable();
	#endif

	ASSERT_FALSE(parsed);
	EXPECT_EQ(0UL, num_calls);
	}

	TEST(process_map, ReadMapFileAsyncSafe_buffer_size_zero) {
	size_t num_calls = 0;
	auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

	#if defined(__BIONIC__)
	// Any allocations will block after this call.
	malloc_disable();
	#endif

	char buffer[10];
	bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, 0, callback);

	#if defined(__BIONIC__)
	malloc_enable();
	#endif

	ASSERT_FALSE(parsed);
	EXPECT_EQ(0UL, num_calls);
	}

	TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_no_calls) {
	size_t num_calls = 0;
	auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

	#if defined(__BIONIC__)
	// Any allocations will block after this call.
	malloc_disable();
	#endif

	char buffer[10];
	bool parsed =
	android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, sizeof(buffer), callback);

	#if defined(__BIONIC__)
	malloc_enable();
	#endif

	ASSERT_FALSE(parsed);
	EXPECT_EQ(0UL, num_calls);
	}

	TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_could_parse) {
	TemporaryFile tf;
	ASSERT_TRUE(android::base::WriteStringToFd(
	"0a0000-0c0000 rwxp 00000001 00:05 100 /fake/lib.so\n", tf.fd));

	size_t num_calls = 0;
	auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };

	#if defined(__BIONIC__)
	// Any allocations will block after this call.
	malloc_disable();
	#endif

	char buffer[39];
	bool parsed = android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer, sizeof(buffer), callback);

	#if defined(__BIONIC__)
	malloc_enable();
	#endif

	ASSERT_FALSE(parsed);
	EXPECT_EQ(0UL, num_calls);
	}