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315 lines
12 KiB
315 lines
12 KiB
/* |
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* Copyright (C) 2017 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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#include "devices.h" |
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#include <android-base/scopeguard.h> |
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#include <android-base/test_utils.h> |
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#include <gtest/gtest.h> |
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#include "util.h" |
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using namespace std::string_literals; |
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namespace android { |
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namespace init { |
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class DeviceHandlerTester { |
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public: |
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void TestGetSymlinks(const std::string& platform_device, const Uevent& uevent, |
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const std::vector<std::string> expected_links) { |
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TemporaryDir fake_sys_root; |
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device_handler_.sysfs_mount_point_ = fake_sys_root.path; |
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std::string platform_device_dir = fake_sys_root.path + platform_device; |
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mkdir_recursive(platform_device_dir, 0777, nullptr); |
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std::string platform_bus = fake_sys_root.path + "/bus/platform"s; |
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mkdir_recursive(platform_bus, 0777, nullptr); |
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symlink(platform_bus.c_str(), (platform_device_dir + "/subsystem").c_str()); |
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mkdir_recursive(android::base::Dirname(fake_sys_root.path + uevent.path), 0777, nullptr); |
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std::vector<std::string> result; |
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result = device_handler_.GetBlockDeviceSymlinks(uevent); |
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auto expected_size = expected_links.size(); |
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ASSERT_EQ(expected_size, result.size()); |
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if (expected_size == 0) return; |
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// Explicitly iterate so the results are visible if a failure occurs |
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for (unsigned int i = 0; i < expected_size; ++i) { |
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EXPECT_EQ(expected_links[i], result[i]); |
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} |
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} |
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private: |
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DeviceHandler device_handler_; |
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}; |
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TEST(device_handler, get_block_device_symlinks_success_platform) { |
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// These are actual paths from bullhead |
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const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
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Uevent uevent = { |
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.path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0", |
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.partition_name = "", |
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.partition_num = -1, |
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}; |
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std::vector<std::string> expected_result{"/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0"}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_success_platform_with_partition) { |
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// These are actual paths from bullhead |
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const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
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Uevent uevent = { |
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.path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
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.partition_name = "modem", |
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.partition_num = 1, |
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}; |
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std::vector<std::string> expected_result{ |
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"/dev/block/platform/soc.0/f9824900.sdhci/by-name/modem", |
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"/dev/block/platform/soc.0/f9824900.sdhci/by-num/p1", |
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"/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0p1", |
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}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_success_platform_with_partition_only_num) { |
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const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
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Uevent uevent = { |
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.path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
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.partition_name = "", |
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.partition_num = 1, |
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}; |
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std::vector<std::string> expected_result{ |
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"/dev/block/platform/soc.0/f9824900.sdhci/by-num/p1", |
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"/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0p1", |
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}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_success_platform_with_partition_only_name) { |
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const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
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Uevent uevent = { |
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.path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
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.partition_name = "modem", |
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.partition_num = -1, |
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}; |
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std::vector<std::string> expected_result{ |
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"/dev/block/platform/soc.0/f9824900.sdhci/by-name/modem", |
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"/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0p1", |
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}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_success_pci) { |
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const char* platform_device = "/devices/do/not/match"; |
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Uevent uevent = { |
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.path = "/devices/pci0000:00/0000:00:1f.2/mmcblk0", .partition_name = "", .partition_num = -1, |
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}; |
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std::vector<std::string> expected_result{"/dev/block/pci/pci0000:00/0000:00:1f.2/mmcblk0"}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_pci_bad_format) { |
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const char* platform_device = "/devices/do/not/match"; |
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Uevent uevent = { |
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.path = "/devices/pci//mmcblk0", .partition_name = "", .partition_num = -1, |
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}; |
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std::vector<std::string> expected_result{}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_success_vbd) { |
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const char* platform_device = "/devices/do/not/match"; |
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Uevent uevent = { |
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.path = "/devices/vbd-1234/mmcblk0", .partition_name = "", .partition_num = -1, |
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}; |
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std::vector<std::string> expected_result{"/dev/block/vbd/1234/mmcblk0"}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_vbd_bad_format) { |
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const char* platform_device = "/devices/do/not/match"; |
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Uevent uevent = { |
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.path = "/devices/vbd-/mmcblk0", .partition_name = "", .partition_num = -1, |
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}; |
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std::vector<std::string> expected_result{}; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, get_block_device_symlinks_no_matches) { |
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const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
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Uevent uevent = { |
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.path = "/devices/soc.0/not_the_device/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
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.partition_name = "", |
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.partition_num = -1, |
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}; |
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std::vector<std::string> expected_result; |
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DeviceHandlerTester device_handler_tester_; |
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device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result); |
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} |
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TEST(device_handler, sanitize_null) { |
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SanitizePartitionName(nullptr); |
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} |
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TEST(device_handler, sanitize_empty) { |
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std::string empty; |
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SanitizePartitionName(&empty); |
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EXPECT_EQ(0u, empty.size()); |
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} |
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TEST(device_handler, sanitize_allgood) { |
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std::string good = |
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"abcdefghijklmnopqrstuvwxyz" |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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"0123456789" |
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"_-."; |
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std::string good_copy = good; |
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SanitizePartitionName(&good); |
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EXPECT_EQ(good_copy, good); |
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} |
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TEST(device_handler, sanitize_somebad) { |
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std::string string = "abc!@#$%^&*()"; |
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SanitizePartitionName(&string); |
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EXPECT_EQ("abc__________", string); |
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} |
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TEST(device_handler, sanitize_allbad) { |
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std::string string = "!@#$%^&*()"; |
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SanitizePartitionName(&string); |
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EXPECT_EQ("__________", string); |
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} |
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TEST(device_handler, sanitize_onebad) { |
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std::string string = ")"; |
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SanitizePartitionName(&string); |
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EXPECT_EQ("_", string); |
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} |
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TEST(device_handler, DevPermissionsMatchNormal) { |
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// Basic from ueventd.rc |
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// /dev/null 0666 root root |
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Permissions permissions("/dev/null", 0666, 0, 0); |
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EXPECT_TRUE(permissions.Match("/dev/null")); |
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EXPECT_FALSE(permissions.Match("/dev/nullsuffix")); |
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EXPECT_FALSE(permissions.Match("/dev/nul")); |
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EXPECT_EQ(0666U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(0U, permissions.gid()); |
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} |
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TEST(device_handler, DevPermissionsMatchPrefix) { |
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// Prefix from ueventd.rc |
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// /dev/dri/* 0666 root graphics |
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Permissions permissions("/dev/dri/*", 0666, 0, 1000); |
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EXPECT_TRUE(permissions.Match("/dev/dri/some_dri_device")); |
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EXPECT_TRUE(permissions.Match("/dev/dri/some_other_dri_device")); |
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EXPECT_TRUE(permissions.Match("/dev/dri/")); |
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EXPECT_FALSE(permissions.Match("/dev/dr/non_match")); |
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EXPECT_EQ(0666U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(1000U, permissions.gid()); |
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} |
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TEST(device_handler, DevPermissionsMatchWildcard) { |
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// Wildcard example |
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// /dev/device*name 0666 root graphics |
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Permissions permissions("/dev/device*name", 0666, 0, 1000); |
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EXPECT_TRUE(permissions.Match("/dev/devicename")); |
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EXPECT_TRUE(permissions.Match("/dev/device123name")); |
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EXPECT_TRUE(permissions.Match("/dev/deviceabcname")); |
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EXPECT_FALSE(permissions.Match("/dev/device123name/subdevice")); |
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EXPECT_FALSE(permissions.Match("/dev/deviceame")); |
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EXPECT_EQ(0666U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(1000U, permissions.gid()); |
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} |
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TEST(device_handler, DevPermissionsMatchWildcardPrefix) { |
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// Wildcard+Prefix example |
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// /dev/device*name* 0666 root graphics |
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Permissions permissions("/dev/device*name*", 0666, 0, 1000); |
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EXPECT_TRUE(permissions.Match("/dev/devicename")); |
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EXPECT_TRUE(permissions.Match("/dev/device123name")); |
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EXPECT_TRUE(permissions.Match("/dev/deviceabcname")); |
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EXPECT_TRUE(permissions.Match("/dev/device123namesomething")); |
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// FNM_PATHNAME doesn't match '/' with * |
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EXPECT_FALSE(permissions.Match("/dev/device123name/something")); |
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EXPECT_FALSE(permissions.Match("/dev/deviceame")); |
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EXPECT_EQ(0666U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(1000U, permissions.gid()); |
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} |
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TEST(device_handler, SysfsPermissionsMatchWithSubsystemNormal) { |
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// /sys/devices/virtual/input/input* enable 0660 root input |
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SysfsPermissions permissions("/sys/devices/virtual/input/input*", "enable", 0660, 0, 1001); |
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EXPECT_TRUE(permissions.MatchWithSubsystem("/sys/devices/virtual/input/input0", "input")); |
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EXPECT_FALSE(permissions.MatchWithSubsystem("/sys/devices/virtual/input/not_input0", "input")); |
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EXPECT_EQ(0660U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(1001U, permissions.gid()); |
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} |
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TEST(device_handler, SysfsPermissionsMatchWithSubsystemClass) { |
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// /sys/class/input/event* enable 0660 root input |
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SysfsPermissions permissions("/sys/class/input/event*", "enable", 0660, 0, 1001); |
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EXPECT_TRUE(permissions.MatchWithSubsystem( |
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"/sys/devices/soc.0/f9924000.i2c/i2c-2/2-0020/input/input0/event0", "input")); |
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EXPECT_FALSE(permissions.MatchWithSubsystem( |
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"/sys/devices/soc.0/f9924000.i2c/i2c-2/2-0020/input/input0/not_event0", "input")); |
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EXPECT_FALSE(permissions.MatchWithSubsystem( |
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"/sys/devices/soc.0/f9924000.i2c/i2c-2/2-0020/input/input0/event0", "not_input")); |
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EXPECT_EQ(0660U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(1001U, permissions.gid()); |
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} |
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TEST(device_handler, SysfsPermissionsMatchWithSubsystemBus) { |
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// /sys/bus/i2c/devices/i2c-* enable 0660 root input |
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SysfsPermissions permissions("/sys/bus/i2c/devices/i2c-*", "enable", 0660, 0, 1001); |
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EXPECT_TRUE(permissions.MatchWithSubsystem("/sys/devices/soc.0/f9967000.i2c/i2c-5", "i2c")); |
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EXPECT_FALSE(permissions.MatchWithSubsystem("/sys/devices/soc.0/f9967000.i2c/not-i2c", "i2c")); |
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EXPECT_FALSE( |
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permissions.MatchWithSubsystem("/sys/devices/soc.0/f9967000.i2c/i2c-5", "not_i2c")); |
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EXPECT_EQ(0660U, permissions.perm()); |
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EXPECT_EQ(0U, permissions.uid()); |
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EXPECT_EQ(1001U, permissions.gid()); |
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} |
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} // namespace init |
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} // namespace android
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