crashpad/util/process/process_memory_range_test.cc
Mark Mentovai 50ed179e9a Use BUILDFLAG for OS checking
Use BUILDFLAG(IS_*) instead of defined(OS_*).

This was generated mostly mechnically by performing the following steps:
 - sed -i '' -E -e 's/defined\(OS_/BUILDFLAG(IS_/g' \
                -e 's%([ !])OS_([A-Z]+)%\1BUILDFLAG(IS_\2)%g' \
       $(git grep -l 'OS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - sed -i '' -e 's/#ifdef BUILDFLAG(/#if BUILDFLAG(/' \
       $(git grep -l '#ifdef BUILDFLAG('
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - gsed -i -z -E -e \
       's%(.*)#include "%\1#include "build/buildflag.h"\n#include "%' \
       $(git grep -l 'BUILDFLAG(IS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - Spot checks to move #include "build/buildflag.h" to the correct parts
   of files.
 - sed -i '' -E -e \
       's%^(#include "build/buildflag.h")$%#include "build/build_config.h"\n\1%' \
       $(grep -L '^#include "build/build_config.h"$'
         $(git grep -l 'BUILDFLAG(IS_'
           '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'))
 - Add “clang-format off” around tool usage messages.
 - git cl format
 - Update mini_chromium to 85ba51f98278 (intermediate step).
   TESTING ONLY).
 - for f in $(git grep -l '^#include "build/buildflag.h"$'
              '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'); do \
       grep -v '^#include "build/buildflag.h"$' "${f}" > /tmp/z; \
       cp /tmp/z "${f}"; done
 - git cl format
 - Update mini_chromium to 735143774c5f (intermediate step).
 - Update mini_chromium to f41420eb45fa (as checked in).
 - Update mini_chromium to 6e2f204b4ae1 (as checked in).

For ease of review and inspection, each of these steps is uploaded as a
new patch set in a review series.

This includes an update of mini_chromium to 6e2f204b4ae1:

f41420eb45fa Use BUILDFLAG for OS checking
6e2f204b4ae1 Include what you use: string_util.h uses build_config.h

Bug: chromium:1234043
Change-Id: Ieef86186f094c64e59b853729737e36982f8cf69
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3400258
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-01-19 20:21:19 +00:00

102 lines
3.5 KiB
C++

// Copyright 2017 The Crashpad Authors. All rights reserved.
//
// 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 "util/process/process_memory_range.h"
#include <limits>
#include "base/cxx17_backports.h"
#include "build/build_config.h"
#include "gtest/gtest.h"
#include "test/process_type.h"
#include "util/misc/from_pointer_cast.h"
#include "util/process/process_memory_native.h"
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "test/linux/fake_ptrace_connection.h"
#endif
namespace crashpad {
namespace test {
namespace {
struct TestObject {
char string1[16];
char string2[16];
} kTestObject = {"string1", "string2"};
TEST(ProcessMemoryRange, Basic) {
#if defined(ARCH_CPU_64_BITS)
constexpr bool is_64_bit = true;
#else
constexpr bool is_64_bit = false;
#endif // ARCH_CPU_64_BITS
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
FakePtraceConnection connection;
ASSERT_TRUE(connection.Initialize(GetSelfProcess()));
ProcessMemoryLinux memory(&connection);
#else
ProcessMemoryNative memory;
ASSERT_TRUE(memory.Initialize(GetSelfProcess()));
#endif // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) ||
// BUILDFLAG(IS_CHROMEOS)
ProcessMemoryRange range;
ASSERT_TRUE(range.Initialize(&memory, is_64_bit));
EXPECT_EQ(range.Is64Bit(), is_64_bit);
// Both strings are accessible within the object's range.
auto object_addr = FromPointerCast<VMAddress>(&kTestObject);
EXPECT_TRUE(range.RestrictRange(object_addr, sizeof(kTestObject)));
TestObject object;
ASSERT_TRUE(range.Read(object_addr, sizeof(object), &object));
EXPECT_EQ(memcmp(&object, &kTestObject, sizeof(object)), 0);
std::string string;
auto string1_addr = FromPointerCast<VMAddress>(kTestObject.string1);
auto string2_addr = FromPointerCast<VMAddress>(kTestObject.string2);
ASSERT_TRUE(range.ReadCStringSizeLimited(
string1_addr, base::size(kTestObject.string1), &string));
EXPECT_STREQ(string.c_str(), kTestObject.string1);
ASSERT_TRUE(range.ReadCStringSizeLimited(
string2_addr, base::size(kTestObject.string2), &string));
EXPECT_STREQ(string.c_str(), kTestObject.string2);
// Limit the range to remove access to string2.
ProcessMemoryRange range2;
ASSERT_TRUE(range2.Initialize(range));
ASSERT_TRUE(
range2.RestrictRange(string1_addr, base::size(kTestObject.string1)));
EXPECT_TRUE(range2.ReadCStringSizeLimited(
string1_addr, base::size(kTestObject.string1), &string));
EXPECT_FALSE(range2.ReadCStringSizeLimited(
string2_addr, base::size(kTestObject.string2), &string));
EXPECT_FALSE(range2.Read(object_addr, sizeof(object), &object));
// String reads fail if the NUL terminator is outside the range.
ASSERT_TRUE(range2.RestrictRange(string1_addr, strlen(kTestObject.string1)));
EXPECT_FALSE(range2.ReadCStringSizeLimited(
string1_addr, base::size(kTestObject.string1), &string));
// New range outside the old range.
EXPECT_FALSE(range2.RestrictRange(string1_addr - 1, 1));
}
} // namespace
} // namespace test
} // namespace crashpad