| /* |
| * 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 "devices.h" |
| |
| #include <string> |
| #include <vector> |
| |
| #include <android-base/scopeguard.h> |
| #include <gtest/gtest.h> |
| |
| void add_platform_device(const std::string& path) { |
| uevent uevent = { |
| .action = "add", .subsystem = "platform", .path = path, |
| }; |
| handle_platform_device_event(&uevent); |
| } |
| |
| void remove_platform_device(const std::string& path) { |
| uevent uevent = { |
| .action = "remove", .subsystem = "platform", .path = path, |
| }; |
| handle_platform_device_event(&uevent); |
| } |
| |
| template <std::vector<std::string> (*Function)(uevent*)> |
| void test_get_symlinks(const std::string& platform_device_name, uevent* uevent, |
| const std::vector<std::string> expected_links) { |
| add_platform_device(platform_device_name); |
| auto platform_device_remover = android::base::make_scope_guard( |
| [&platform_device_name]() { remove_platform_device(platform_device_name); }); |
| |
| std::vector<std::string> result = Function(uevent); |
| |
| auto expected_size = expected_links.size(); |
| ASSERT_EQ(expected_size, result.size()); |
| if (expected_size == 0) return; |
| |
| // Explicitly iterate so the results are visible if a failure occurs |
| for (unsigned int i = 0; i < expected_size; ++i) { |
| EXPECT_EQ(expected_links[i], result[i]); |
| } |
| } |
| |
| TEST(devices, handle_platform_device_event) { |
| platform_devices.clear(); |
| add_platform_device("/devices/platform/some_device_name"); |
| ASSERT_EQ(1U, platform_devices.size()); |
| remove_platform_device("/devices/platform/some_device_name"); |
| ASSERT_EQ(0U, platform_devices.size()); |
| } |
| |
| TEST(devices, find_platform_device) { |
| platform_devices.clear(); |
| add_platform_device("/devices/platform/some_device_name"); |
| add_platform_device("/devices/platform/some_device_name/longer"); |
| add_platform_device("/devices/platform/other_device_name"); |
| EXPECT_EQ(3U, platform_devices.size()); |
| |
| std::string out_path; |
| EXPECT_FALSE(find_platform_device("/devices/platform/not_found", &out_path)); |
| EXPECT_EQ("", out_path); |
| |
| EXPECT_FALSE( |
| find_platform_device("/devices/platform/some_device_name_with_same_prefix", &out_path)); |
| |
| EXPECT_TRUE( |
| find_platform_device("/devices/platform/some_device_name/longer/longer_child", &out_path)); |
| EXPECT_EQ("/devices/platform/some_device_name/longer", out_path); |
| |
| EXPECT_TRUE(find_platform_device("/devices/platform/some_device_name/other_child", &out_path)); |
| EXPECT_EQ("/devices/platform/some_device_name", out_path); |
| } |
| |
| TEST(devices, get_character_device_symlinks_success) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name/usb/usb_device/name/tty2-1:1.0", |
| .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result{"/dev/usb/ttyname"}; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_no_pdev_match) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/device/name/tty2-1:1.0", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_nothing_after_platform_device) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_no_usb_found) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name/bad/bad/", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_no_roothub) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name/usb/", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_no_usb_device) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name/usb/usb_device/", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_no_final_slash) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name/usb/usb_device/name", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_character_device_symlinks_no_final_name) { |
| const char* platform_device = "/devices/platform/some_device_name"; |
| uevent uevent = { |
| .path = "/devices/platform/some_device_name/usb/usb_device//", .subsystem = "tty", |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_character_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_success_platform) { |
| // These are actual paths from bullhead |
| const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
| uevent uevent = { |
| .path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0", |
| .partition_name = "", |
| .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result{"/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0"}; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_success_platform_with_partition) { |
| // These are actual paths from bullhead |
| const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
| uevent uevent = { |
| .path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
| .partition_name = "modem", |
| .partition_num = 1, |
| }; |
| std::vector<std::string> expected_result{ |
| "/dev/block/platform/soc.0/f9824900.sdhci/by-name/modem", |
| "/dev/block/platform/soc.0/f9824900.sdhci/by-num/p1", |
| "/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0p1", |
| }; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_success_platform_with_partition_only_num) { |
| const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
| uevent uevent = { |
| .path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
| .partition_name = "", |
| .partition_num = 1, |
| }; |
| std::vector<std::string> expected_result{ |
| "/dev/block/platform/soc.0/f9824900.sdhci/by-num/p1", |
| "/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0p1", |
| }; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_success_platform_with_partition_only_name) { |
| const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
| uevent uevent = { |
| .path = "/devices/soc.0/f9824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
| .partition_name = "modem", |
| .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result{ |
| "/dev/block/platform/soc.0/f9824900.sdhci/by-name/modem", |
| "/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0p1", |
| }; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_success_pci) { |
| const char* platform_device = "/devices/do/not/match"; |
| uevent uevent = { |
| .path = "/devices/pci0000:00/0000:00:1f.2/mmcblk0", .partition_name = "", .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result{"/dev/block/pci/pci0000:00/0000:00:1f.2/mmcblk0"}; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_pci_bad_format) { |
| const char* platform_device = "/devices/do/not/match"; |
| uevent uevent = { |
| .path = "/devices/pci//mmcblk0", .partition_name = "", .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result{}; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_success_vbd) { |
| const char* platform_device = "/devices/do/not/match"; |
| uevent uevent = { |
| .path = "/devices/vbd-1234/mmcblk0", .partition_name = "", .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result{"/dev/block/vbd/1234/mmcblk0"}; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_vbd_bad_format) { |
| const char* platform_device = "/devices/do/not/match"; |
| uevent uevent = { |
| .path = "/devices/vbd-/mmcblk0", .partition_name = "", .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result{}; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, get_block_device_symlinks_no_matches) { |
| const char* platform_device = "/devices/soc.0/f9824900.sdhci"; |
| uevent uevent = { |
| .path = "/devices/soc.0/not_the_device/mmc_host/mmc0/mmc0:0001/block/mmcblk0p1", |
| .partition_name = "", |
| .partition_num = -1, |
| }; |
| std::vector<std::string> expected_result; |
| |
| test_get_symlinks<get_block_device_symlinks>(platform_device, &uevent, expected_result); |
| } |
| |
| TEST(devices, sanitize_null) { |
| sanitize_partition_name(nullptr); |
| } |
| |
| TEST(devices, sanitize_empty) { |
| std::string empty; |
| sanitize_partition_name(&empty); |
| EXPECT_EQ(0u, empty.size()); |
| } |
| |
| TEST(devices, sanitize_allgood) { |
| std::string good = |
| "abcdefghijklmnopqrstuvwxyz" |
| "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| "0123456789" |
| "_-."; |
| std::string good_copy = good; |
| sanitize_partition_name(&good); |
| EXPECT_EQ(good_copy, good); |
| } |
| |
| TEST(devices, sanitize_somebad) { |
| std::string string = "abc!@#$%^&*()"; |
| sanitize_partition_name(&string); |
| EXPECT_EQ("abc__________", string); |
| } |
| |
| TEST(devices, sanitize_allbad) { |
| std::string string = "!@#$%^&*()"; |
| sanitize_partition_name(&string); |
| EXPECT_EQ("__________", string); |
| } |
| |
| TEST(devices, sanitize_onebad) { |
| std::string string = ")"; |
| sanitize_partition_name(&string); |
| EXPECT_EQ("_", string); |
| } |
| |
| TEST(devices, DevPermissionsMatchNormal) { |
| // Basic from ueventd.rc |
| // /dev/null 0666 root root |
| Permissions permissions("/dev/null", 0666, 0, 0); |
| EXPECT_TRUE(permissions.Match("/dev/null")); |
| EXPECT_FALSE(permissions.Match("/dev/nullsuffix")); |
| EXPECT_FALSE(permissions.Match("/dev/nul")); |
| EXPECT_EQ(0666U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(0U, permissions.gid()); |
| } |
| |
| TEST(devices, DevPermissionsMatchPrefix) { |
| // Prefix from ueventd.rc |
| // /dev/dri/* 0666 root graphics |
| Permissions permissions("/dev/dri/*", 0666, 0, 1000); |
| EXPECT_TRUE(permissions.Match("/dev/dri/some_dri_device")); |
| EXPECT_TRUE(permissions.Match("/dev/dri/some_other_dri_device")); |
| EXPECT_TRUE(permissions.Match("/dev/dri/")); |
| EXPECT_FALSE(permissions.Match("/dev/dr/non_match")); |
| EXPECT_EQ(0666U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(1000U, permissions.gid()); |
| } |
| |
| TEST(devices, DevPermissionsMatchWildcard) { |
| // Wildcard example |
| // /dev/device*name 0666 root graphics |
| Permissions permissions("/dev/device*name", 0666, 0, 1000); |
| EXPECT_TRUE(permissions.Match("/dev/devicename")); |
| EXPECT_TRUE(permissions.Match("/dev/device123name")); |
| EXPECT_TRUE(permissions.Match("/dev/deviceabcname")); |
| EXPECT_FALSE(permissions.Match("/dev/device123name/subdevice")); |
| EXPECT_FALSE(permissions.Match("/dev/deviceame")); |
| EXPECT_EQ(0666U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(1000U, permissions.gid()); |
| } |
| |
| TEST(devices, DevPermissionsMatchWildcardPrefix) { |
| // Wildcard+Prefix example |
| // /dev/device*name* 0666 root graphics |
| Permissions permissions("/dev/device*name*", 0666, 0, 1000); |
| EXPECT_TRUE(permissions.Match("/dev/devicename")); |
| EXPECT_TRUE(permissions.Match("/dev/device123name")); |
| EXPECT_TRUE(permissions.Match("/dev/deviceabcname")); |
| EXPECT_TRUE(permissions.Match("/dev/device123namesomething")); |
| // FNM_PATHNAME doesn't match '/' with * |
| EXPECT_FALSE(permissions.Match("/dev/device123name/something")); |
| EXPECT_FALSE(permissions.Match("/dev/deviceame")); |
| EXPECT_EQ(0666U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(1000U, permissions.gid()); |
| } |
| |
| TEST(devices, SysfsPermissionsMatchWithSubsystemNormal) { |
| // /sys/devices/virtual/input/input* enable 0660 root input |
| SysfsPermissions permissions("/sys/devices/virtual/input/input*", "enable", 0660, 0, 1001); |
| EXPECT_TRUE(permissions.MatchWithSubsystem("/sys/devices/virtual/input/input0", "input")); |
| EXPECT_FALSE(permissions.MatchWithSubsystem("/sys/devices/virtual/input/not_input0", "input")); |
| EXPECT_EQ(0660U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(1001U, permissions.gid()); |
| } |
| |
| TEST(devices, SysfsPermissionsMatchWithSubsystemClass) { |
| // /sys/class/input/event* enable 0660 root input |
| SysfsPermissions permissions("/sys/class/input/event*", "enable", 0660, 0, 1001); |
| EXPECT_TRUE(permissions.MatchWithSubsystem( |
| "/sys/devices/soc.0/f9924000.i2c/i2c-2/2-0020/input/input0/event0", "input")); |
| EXPECT_FALSE(permissions.MatchWithSubsystem( |
| "/sys/devices/soc.0/f9924000.i2c/i2c-2/2-0020/input/input0/not_event0", "input")); |
| EXPECT_FALSE(permissions.MatchWithSubsystem( |
| "/sys/devices/soc.0/f9924000.i2c/i2c-2/2-0020/input/input0/event0", "not_input")); |
| EXPECT_EQ(0660U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(1001U, permissions.gid()); |
| } |
| |
| TEST(devices, SysfsPermissionsMatchWithSubsystemBus) { |
| // /sys/bus/i2c/devices/i2c-* enable 0660 root input |
| SysfsPermissions permissions("/sys/bus/i2c/devices/i2c-*", "enable", 0660, 0, 1001); |
| EXPECT_TRUE(permissions.MatchWithSubsystem("/sys/devices/soc.0/f9967000.i2c/i2c-5", "i2c")); |
| EXPECT_FALSE(permissions.MatchWithSubsystem("/sys/devices/soc.0/f9967000.i2c/not-i2c", "i2c")); |
| EXPECT_FALSE( |
| permissions.MatchWithSubsystem("/sys/devices/soc.0/f9967000.i2c/i2c-5", "not_i2c")); |
| EXPECT_EQ(0660U, permissions.perm()); |
| EXPECT_EQ(0U, permissions.uid()); |
| EXPECT_EQ(1001U, permissions.gid()); |
| } |
