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ReadLinuxMapsTest.cpp
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// Copyright (c) 2022 The Orbit Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <sys/mman.h>
#include <unistd.h>
#include <string>
#include <vector>
#include "ModuleUtils/ReadLinuxMaps.h"
#include "OrbitBase/Result.h"
#include "TestUtils/TestUtils.h"
using orbit_test_utils::HasNoError;
namespace orbit_module_utils {
TEST(ReadLinuxMaps, ReadMaps) {
const ErrorMessageOr<std::string> proc_pid_maps_content = ReadMaps(getpid());
EXPECT_THAT(proc_pid_maps_content, HasNoError());
EXPECT_GT(proc_pid_maps_content.value().size(), 0);
}
TEST(ReadLinuxMaps, ParseMaps) {
constexpr const char* kProcPidMapsContent{
"00400000-00452000 r-xp 00000000 08:02 173521 /usr/bin/dbus-daemon\n"
"00e03000-00e24000 rw-p 00000000 00:00 0 [heap]\n"
"35b1800000-35b1820000 r-xp 00000000 08:02 135522 /path with spaces\n"
"35b1a21000-35b1a22000 rw-p 00000000 00:00 0 \n"};
std::vector<LinuxMemoryMapping> maps = ParseMaps(kProcPidMapsContent);
ASSERT_EQ(maps.size(), 4);
EXPECT_EQ(maps[0].start_address(), 0x400000);
EXPECT_EQ(maps[0].end_address(), 0x452000);
EXPECT_EQ(maps[0].perms(), PROT_READ | PROT_EXEC);
EXPECT_EQ(maps[0].inode(), 173521);
EXPECT_EQ(maps[0].pathname(), "/usr/bin/dbus-daemon");
EXPECT_EQ(maps[1].start_address(), 0xe03000);
EXPECT_EQ(maps[1].end_address(), 0xe24000);
EXPECT_EQ(maps[1].perms(), PROT_READ | PROT_WRITE);
EXPECT_EQ(maps[1].inode(), 0);
EXPECT_EQ(maps[1].pathname(), "[heap]");
EXPECT_EQ(maps[2].start_address(), 0x35b1800000);
EXPECT_EQ(maps[2].end_address(), 0x35b1820000);
EXPECT_EQ(maps[2].perms(), PROT_READ | PROT_EXEC);
EXPECT_EQ(maps[2].inode(), 135522);
EXPECT_EQ(maps[2].pathname(), "/path with spaces");
EXPECT_EQ(maps[3].start_address(), 0x35b1a21000);
EXPECT_EQ(maps[3].end_address(), 0x35b1a22000);
EXPECT_EQ(maps[3].perms(), PROT_READ | PROT_WRITE);
EXPECT_EQ(maps[3].inode(), 0);
EXPECT_EQ(maps[3].pathname(), "");
}
TEST(ReadLinuxMaps, ParseMapsFromInvalidProcPidMapsContent) {
std::vector<LinuxMemoryMapping> maps;
maps = ParseMaps("");
EXPECT_EQ(maps.size(), 0);
maps = ParseMaps("\n\n");
EXPECT_EQ(maps.size(), 0);
// Missing inode.
maps = ParseMaps("00400000-00452000 r-xp 00000000 08:02");
EXPECT_EQ(maps.size(), 0);
// Unexpected protection format.
maps = ParseMaps("00400000-00452000 r-x 00000000 08:02 173521 /usr/bin/dbus-daemon");
EXPECT_EQ(maps.size(), 0);
// Non-numeric inode.
maps = ParseMaps("00400000-00452000 r-xp 00000000 08:02 173521a /usr/bin/dbus-daemon\n");
EXPECT_EQ(maps.size(), 0);
}
TEST(ReadLinuxMaps, ReadAndParseMaps) {
const ErrorMessageOr<std::vector<LinuxMemoryMapping>> maps = ReadAndParseMaps(getpid());
EXPECT_THAT(maps, HasNoError());
EXPECT_GT(maps.value().size(), 0);
}
} // namespace orbit_module_utils