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/*
* Copyright (C) 2017 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 "common/vsoc/shm/managed_e2e_test_region_layout.h"
#include "guest/vsoc/lib/e2e_test_common.h"
#include "guest/vsoc/lib/manager_region_view.h"
#include <android-base/logging.h>
#include <gtest/gtest.h>
using vsoc::layout::e2e_test::E2EManagedTestRegionLayout;
using vsoc::layout::e2e_test::E2EManagerTestRegionLayout;
// Region view classes to allow calling the Open() function from the test.
class E2EManagedTestRegionView
: public vsoc::TypedRegionView<
E2EManagedTestRegionView,
E2EManagedTestRegionLayout> {
public:
using vsoc::TypedRegionView<
E2EManagedTestRegionView, E2EManagedTestRegionLayout>::Open;
};
class E2EManagerTestRegionView
: public vsoc::ManagerRegionView<
E2EManagerTestRegionView,
E2EManagerTestRegionLayout> {
public:
using vsoc::ManagerRegionView<
E2EManagerTestRegionView, E2EManagerTestRegionLayout>::Open;
};
class ManagedRegionTest {
public:
void testManagedRegionFailMap() {
E2EManagedTestRegionView managed_region;
disable_tombstones();
// managed_region.Open should never return.
EXPECT_FALSE(managed_region.Open());
}
void testManagedRegionMap() {
EXPECT_TRUE(manager_region_.Open());
// Maps correctly with permission
const uint32_t owned_value = 65, begin_offset = 4096, end_offset = 8192;
int perm_fd = manager_region_.CreateFdScopedPermission(
&manager_region_.data()->data[0], owned_value, begin_offset,
end_offset);
EXPECT_TRUE(perm_fd >= 0);
fd_scoped_permission perm;
ASSERT_TRUE(ioctl(perm_fd, VSOC_GET_FD_SCOPED_PERMISSION, &perm) == 0);
void* mapped_ptr = mmap(NULL, perm.end_offset - perm.begin_offset,
PROT_WRITE | PROT_READ, MAP_SHARED, perm_fd, 0);
EXPECT_FALSE(mapped_ptr == MAP_FAILED);
// Owned value gets written
EXPECT_TRUE(manager_region_.data()->data[0] == owned_value);
// Data written to the mapped memory stays there after unmap
std::string str = "managed by e2e_manager";
strcpy(reinterpret_cast<char*>(mapped_ptr), str.c_str());
EXPECT_TRUE(munmap(mapped_ptr, end_offset - begin_offset) == 0);
mapped_ptr = mmap(NULL, end_offset - begin_offset, PROT_WRITE | PROT_READ,
MAP_SHARED, perm_fd, 0);
EXPECT_FALSE(mapped_ptr == MAP_FAILED);
EXPECT_TRUE(strcmp(reinterpret_cast<char*>(mapped_ptr), str.c_str()) == 0);
// Create permission elsewhere in the region, map same offset and length,
// ensure data isn't there
EXPECT_TRUE(munmap(mapped_ptr, end_offset - begin_offset) == 0);
close(perm_fd);
EXPECT_TRUE(manager_region_.data()->data[0] == 0);
perm_fd = manager_region_.CreateFdScopedPermission(
&manager_region_.data()->data[1], owned_value, begin_offset + 4096,
end_offset + 4096);
EXPECT_TRUE(perm_fd >= 0);
mapped_ptr = mmap(NULL, end_offset - begin_offset, PROT_WRITE | PROT_READ,
MAP_SHARED, perm_fd, 0);
EXPECT_FALSE(mapped_ptr == MAP_FAILED);
EXPECT_FALSE(strcmp(reinterpret_cast<char*>(mapped_ptr), str.c_str()) == 0);
}
ManagedRegionTest() {}
private:
E2EManagerTestRegionView manager_region_;
};
TEST(ManagedRegionTest, ManagedRegionFailMap) {
ManagedRegionTest test;
EXPECT_EXIT(test.testManagedRegionFailMap(), testing::ExitedWithCode(2),
".*" DEATH_TEST_MESSAGE ".*");
}
TEST(ManagedRegionTest, ManagedRegionMap) {
ManagedRegionTest test;
test.testManagedRegionMap();
}
int main(int argc, char** argv) {
if (argc == 2) {
// gtest tries to leave temporary files in the current directory, so make the
// current directory something that we control.
if (chdir(argv[1]) != 0) {
abort();
}
}
android::base::InitLogging(argv);
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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