From 7f19d100b5ed76e8c51155b5e2698cf5802e1da6 Mon Sep 17 00:00:00 2001 From: Tao Bao Date: Fri, 26 Apr 2019 22:56:56 -0700 Subject: Add install/wipe_device.cpp. Prior to this CL, GetWipePartitionList was declared in install.h (libinstall) but defined in recovery.cpp (librecovery). This CL addresses the issue by refactoring wipe-device related functions into install/wipe_device.cpp. Test: atest recovery_component_test Change-Id: I7ebe04ccfda3d793e085403560a0a202752d9ee3 --- recovery.cpp | 169 ++--------------------------------------------------------- 1 file changed, 4 insertions(+), 165 deletions(-) (limited to 'recovery.cpp') diff --git a/recovery.cpp b/recovery.cpp index f9b3bfc0b..30d8fbfa4 100644 --- a/recovery.cpp +++ b/recovery.cpp @@ -18,11 +18,9 @@ #include #include -#include #include #include #include -#include #include #include #include @@ -30,8 +28,8 @@ #include #include -#include #include +#include #include #include #include @@ -42,12 +40,11 @@ #include #include #include -#include -#include #include /* for property_list */ #include #include +#include "bootloader_message/bootloader_message.h" #include "common.h" #include "fsck_unshare_blocks.h" #include "install/adb_install.h" @@ -55,6 +52,7 @@ #include "install/install.h" #include "install/package.h" #include "install/wipe_data.h" +#include "install/wipe_device.h" #include "otautil/error_code.h" #include "otautil/logging.h" #include "otautil/paths.h" @@ -221,165 +219,6 @@ static InstallResult prompt_and_wipe_data(Device* device) { } } -// Secure-wipe a given partition. It uses BLKSECDISCARD, if supported. Otherwise, it goes with -// BLKDISCARD (if device supports BLKDISCARDZEROES) or BLKZEROOUT. -static bool secure_wipe_partition(const std::string& partition) { - android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(partition.c_str(), O_WRONLY))); - if (fd == -1) { - PLOG(ERROR) << "Failed to open \"" << partition << "\""; - return false; - } - - uint64_t range[2] = { 0, 0 }; - if (ioctl(fd, BLKGETSIZE64, &range[1]) == -1 || range[1] == 0) { - PLOG(ERROR) << "Failed to get partition size"; - return false; - } - LOG(INFO) << "Secure-wiping \"" << partition << "\" from " << range[0] << " to " << range[1]; - - LOG(INFO) << " Trying BLKSECDISCARD..."; - if (ioctl(fd, BLKSECDISCARD, &range) == -1) { - PLOG(WARNING) << " Failed"; - - // Use BLKDISCARD if it zeroes out blocks, otherwise use BLKZEROOUT. - unsigned int zeroes; - if (ioctl(fd, BLKDISCARDZEROES, &zeroes) == 0 && zeroes != 0) { - LOG(INFO) << " Trying BLKDISCARD..."; - if (ioctl(fd, BLKDISCARD, &range) == -1) { - PLOG(ERROR) << " Failed"; - return false; - } - } else { - LOG(INFO) << " Trying BLKZEROOUT..."; - if (ioctl(fd, BLKZEROOUT, &range) == -1) { - PLOG(ERROR) << " Failed"; - return false; - } - } - } - - LOG(INFO) << " Done"; - return true; -} - -static std::unique_ptr ReadWipePackage(size_t wipe_package_size) { - if (wipe_package_size == 0) { - LOG(ERROR) << "wipe_package_size is zero"; - return nullptr; - } - - std::string wipe_package; - std::string err_str; - if (!read_wipe_package(&wipe_package, wipe_package_size, &err_str)) { - PLOG(ERROR) << "Failed to read wipe package" << err_str; - return nullptr; - } - - return Package::CreateMemoryPackage( - std::vector(wipe_package.begin(), wipe_package.end()), nullptr); -} - -// Checks if the wipe package matches expectation. If the check passes, reads the list of -// partitions to wipe from the package. Checks include -// 1. verify the package. -// 2. check metadata (ota-type, pre-device and serial number if having one). -static bool CheckWipePackage(Package* wipe_package) { - if (!verify_package(wipe_package, ui)) { - LOG(ERROR) << "Failed to verify package"; - return false; - } - - ZipArchiveHandle zip = wipe_package->GetZipArchiveHandle(); - if (!zip) { - LOG(ERROR) << "Failed to get ZipArchiveHandle"; - return false; - } - - std::map metadata; - if (!ReadMetadataFromPackage(zip, &metadata)) { - LOG(ERROR) << "Failed to parse metadata in the zip file"; - return false; - } - - return CheckPackageMetadata(metadata, OtaType::BRICK) == 0; -} - -std::vector GetWipePartitionList(Package* wipe_package) { - ZipArchiveHandle zip = wipe_package->GetZipArchiveHandle(); - if (!zip) { - LOG(ERROR) << "Failed to get ZipArchiveHandle"; - return {}; - } - - static constexpr const char* RECOVERY_WIPE_ENTRY_NAME = "recovery.wipe"; - - std::string partition_list_content; - ZipString path(RECOVERY_WIPE_ENTRY_NAME); - ZipEntry entry; - if (FindEntry(zip, path, &entry) == 0) { - uint32_t length = entry.uncompressed_length; - partition_list_content = std::string(length, '\0'); - if (auto err = ExtractToMemory( - zip, &entry, reinterpret_cast(partition_list_content.data()), length); - err != 0) { - LOG(ERROR) << "Failed to extract " << RECOVERY_WIPE_ENTRY_NAME << ": " - << ErrorCodeString(err); - return {}; - } - } else { - LOG(INFO) << "Failed to find " << RECOVERY_WIPE_ENTRY_NAME - << ", falling back to use the partition list on device."; - - static constexpr const char* RECOVERY_WIPE_ON_DEVICE = "/etc/recovery.wipe"; - if (!android::base::ReadFileToString(RECOVERY_WIPE_ON_DEVICE, &partition_list_content)) { - PLOG(ERROR) << "failed to read \"" << RECOVERY_WIPE_ON_DEVICE << "\""; - return {}; - } - } - - std::vector result; - std::vector lines = android::base::Split(partition_list_content, "\n"); - for (const std::string& line : lines) { - std::string partition = android::base::Trim(line); - // Ignore '#' comment or empty lines. - if (android::base::StartsWith(partition, "#") || partition.empty()) { - continue; - } - result.push_back(line); - } - - return result; -} - -// Wipes the current A/B device, with a secure wipe of all the partitions in RECOVERY_WIPE. -static bool wipe_ab_device(size_t wipe_package_size) { - ui->SetBackground(RecoveryUI::ERASING); - ui->SetProgressType(RecoveryUI::INDETERMINATE); - - auto wipe_package = ReadWipePackage(wipe_package_size); - if (!wipe_package) { - LOG(ERROR) << "Failed to open wipe package"; - return false; - } - - if (!CheckWipePackage(wipe_package.get())) { - LOG(ERROR) << "Failed to verify wipe package"; - return false; - } - - auto partition_list = GetWipePartitionList(wipe_package.get()); - if (partition_list.empty()) { - LOG(ERROR) << "Empty wipe ab partition list"; - return false; - } - - for (const auto& partition : partition_list) { - // Proceed anyway even if it fails to wipe some partition. - secure_wipe_partition(partition); - } - return true; -} - static void choose_recovery_file(Device* device) { std::vector entries; if (has_cache) { @@ -934,7 +773,7 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector