On retrofit devices, it is easy to accidentally overwrite
system/vendor/product by flashing system in the bootloader. The reason
is that GPT system_a is really the super partition, and the bootloader
doesn't know it.
Addressing this in bootloaders would require two separate commands: one
that rejects flashing system/vendor/product, and another for
expert/factory use that would allow direct flashing.
This patch introduces protection into the host fastboot tool instead.
It's not mutually exclusive with bootloader changes; having protection
in the host tool affords us better and consistent UI. However it does
rely on users having newer builds.
With this change, the following will not work in the bootloader:
fastboot flash system # or vendor, product, etc
The message is the same whether or not the device is a retrofit. To
continue anyway, you can do:
fastboot flash --force system
If we decide on bootloader protection as well, the --force flag can be
re-used.
Bug: 119689480
Test: fastboot flash system # disallowed in bootloader, allowed in fastbootd
fastboot flash --force system # allowed in bootloader
Change-Id: I0861e3f28a15be925886d5c30c7ebd4b20c477cf
306 lines
6 KiB
Text
306 lines
6 KiB
Text
// Copyright (C) 2018 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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// This is required because no Android.bp can include a library defined in an
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// Android.mk. Eventually should kill libfastboot (defined in Android.mk)
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cc_library_host_static {
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name: "libfastboot2",
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//host_supported: true,
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compile_multilib: "first",
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srcs: [
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"bootimg_utils.cpp",
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"fs.cpp",
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"socket.cpp",
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"tcp.cpp",
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"udp.cpp",
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"util.cpp",
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"fastboot_driver.cpp",
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],
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static_libs: [
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"libziparchive",
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"libsparse",
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"libutils",
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"liblog",
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"libz",
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"libdiagnose_usb",
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"libbase",
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"libcutils",
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"libgtest",
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"libgtest_main",
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"libbase",
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"libadb_host",
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"liblp",
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],
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header_libs: [
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"bootimg_headers",
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],
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export_header_lib_headers: [
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"bootimg_headers",
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],
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target: {
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linux: {
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srcs: ["usb_linux.cpp"],
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},
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darwin: {
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srcs: ["usb_osx.cpp"],
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host_ldlibs: [
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"-framework CoreFoundation",
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"-framework IOKit",
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],
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},
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windows: {
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srcs: ["usb_windows.cpp"],
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host_ldlibs: [
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"-lws2_32",
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],
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},
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},
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cflags: [
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"-Wall",
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"-Wextra",
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"-Werror",
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"-Wunreachable-code",
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],
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export_include_dirs: ["."],
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}
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cc_defaults {
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name: "fastboot_defaults",
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cflags: [
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"-Wall",
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"-Wextra",
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"-Werror",
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"-Wvla",
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],
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rtti: true,
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clang_cflags: [
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"-Wthread-safety",
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],
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}
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cc_binary {
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name: "fastbootd",
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defaults: ["fastboot_defaults"],
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recovery: true,
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srcs: [
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"device/commands.cpp",
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"device/fastboot_device.cpp",
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"device/flashing.cpp",
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"device/main.cpp",
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"device/usb_client.cpp",
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"device/utility.cpp",
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"device/variables.cpp",
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],
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shared_libs: [
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"android.hardware.boot@1.0",
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"android.hardware.fastboot@1.0",
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"android.hardware.health@2.0",
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"libadbd",
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"libasyncio",
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"libbase",
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"libbootloader_message",
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"libcutils",
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"libext2_uuid",
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"libext4_utils",
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"libfs_mgr",
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"libhidlbase",
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"libhidltransport",
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"libhwbinder",
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"liblog",
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"liblp",
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"libsparse",
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"libutils",
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],
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static_libs: [
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"libhealthhalutils",
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],
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cpp_std: "c++17",
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}
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cc_defaults {
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name: "fastboot_host_defaults",
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use_version_lib: true,
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cflags: [
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"-Wall",
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"-Wextra",
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"-Werror",
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"-Wunreachable-code",
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],
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target: {
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darwin: {
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cflags: ["-Wno-unused-parameter"],
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host_ldlibs: [
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"-lpthread",
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"-framework CoreFoundation",
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"-framework IOKit",
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],
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},
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windows: {
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enabled: true,
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host_ldlibs: ["-lws2_32"],
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},
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not_windows: {
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static_libs: [
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"libext4_utils",
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],
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},
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},
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stl: "libc++_static",
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// Don't add anything here, we don't want additional shared dependencies
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// on the host fastboot tool, and shared libraries that link against libc++
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// will violate ODR.
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shared_libs: [],
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header_libs: ["bootimg_headers"],
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static_libs: [
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"libziparchive",
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"libsparse",
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"libutils",
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"liblog",
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"libz",
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"libdiagnose_usb",
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"libbase",
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"libcutils",
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"libgtest_host",
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"liblp",
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"libcrypto",
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],
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}
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//
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// Build host libfastboot.
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//
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cc_library_host_static {
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name: "libfastboot",
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defaults: ["fastboot_host_defaults"],
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cpp_std: "c++17",
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srcs: [
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"bootimg_utils.cpp",
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"fastboot.cpp",
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"fs.cpp",
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"socket.cpp",
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"tcp.cpp",
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"udp.cpp",
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"util.cpp",
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"fastboot_driver.cpp",
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],
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// Only version the final binaries
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use_version_lib: false,
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static_libs: ["libbuildversion"],
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generated_headers: ["platform_tools_version"],
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target: {
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windows: {
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srcs: ["usb_windows.cpp"],
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include_dirs: ["development/host/windows/usb/api"],
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},
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darwin: {
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srcs: ["usb_osx.cpp"],
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},
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linux_glibc: {
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srcs: ["usb_linux.cpp"],
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},
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},
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}
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//
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// Build host fastboot / fastboot.exe
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//
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cc_binary_host {
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name: "fastboot",
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defaults: ["fastboot_host_defaults"],
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srcs: ["main.cpp"],
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static_libs: ["libfastboot"],
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required: [
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"mke2fs",
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"make_f2fs",
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],
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target: {
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not_windows: {
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required: [
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"e2fsdroid",
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"mke2fs.conf",
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"sload_f2fs",
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],
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},
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windows: {
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required: ["AdbWinUsbApi"],
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shared_libs: ["AdbWinApi"],
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},
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},
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}
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//
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// Build host fastboot_test.
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//
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cc_test_host {
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name: "fastboot_test",
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defaults: ["fastboot_host_defaults"],
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srcs: [
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"fastboot_test.cpp",
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"socket_mock.cpp",
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"socket_test.cpp",
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"tcp_test.cpp",
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"udp_test.cpp",
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],
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static_libs: ["libfastboot"],
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target: {
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windows: {
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shared_libs: ["AdbWinApi"],
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},
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windows_x86_64: {
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// Avoid trying to build for win64
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enabled: false,
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},
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},
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}
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