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-rw-r--r--recovery.cpp205
1 files changed, 28 insertions, 177 deletions
diff --git a/recovery.cpp b/recovery.cpp
index 5fc673ec2..eb0c2b216 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -18,11 +18,9 @@
#include <ctype.h>
#include <errno.h>
-#include <fcntl.h>
#include <getopt.h>
#include <inttypes.h>
#include <limits.h>
-#include <linux/fs.h>
#include <linux/input.h>
#include <stdio.h>
#include <stdlib.h>
@@ -30,8 +28,8 @@
#include <sys/types.h>
#include <unistd.h>
-#include <algorithm>
#include <functional>
+#include <iterator>
#include <memory>
#include <string>
#include <vector>
@@ -42,12 +40,12 @@
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-#include <bootloader_message/bootloader_message.h>
#include <cutils/properties.h> /* for property_list */
+#include <fs_mgr/roots.h>
#include <healthhalutils/HealthHalUtils.h>
#include <ziparchive/zip_archive.h>
+#include "bootloader_message/bootloader_message.h"
#include "common.h"
#include "fsck_unshare_blocks.h"
#include "install/adb_install.h"
@@ -55,6 +53,7 @@
#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"
@@ -115,12 +114,12 @@ const char* reason = nullptr;
* 3. main system reboots into recovery
* 4. get_args() writes BCB with "boot-recovery" and "--update_package=..."
* -- after this, rebooting will attempt to reinstall the update --
- * 5. install_package() attempts to install the update
+ * 5. InstallPackage() attempts to install the update
* NOTE: the package install must itself be restartable from any point
* 6. finish_recovery() erases BCB
* -- after this, rebooting will (try to) restart the main system --
* 7. ** if install failed **
- * 7a. prompt_and_wait() shows an error icon and waits for the user
+ * 7a. PromptAndWait() shows an error icon and waits for the user
* 7b. the user reboots (pulling the battery, etc) into the main system
*/
@@ -221,165 +220,6 @@ 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<Package> 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<uint8_t>(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<std::string, std::string> 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<std::string> 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<uint8_t*>(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<std::string> result;
- std::vector<std::string> 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<std::string> entries;
if (has_cache) {
@@ -473,14 +313,18 @@ static void run_graphics_test() {
ui->ShowText(true);
}
-// Returns REBOOT, SHUTDOWN, or REBOOT_BOOTLOADER. Returning NO_ACTION means to take the default,
-// which is to reboot or shutdown depending on if the --shutdown_after flag was passed to recovery.
-static Device::BuiltinAction prompt_and_wait(Device* device, int status) {
+// Shows the recovery UI and waits for user input. Returns one of the device builtin actions, such
+// as REBOOT, SHUTDOWN, or REBOOT_BOOTLOADER. Returning NO_ACTION means to take the default, which
+// is to reboot or shutdown depending on if the --shutdown_after flag was passed to recovery.
+static Device::BuiltinAction PromptAndWait(Device* device, InstallResult status) {
for (;;) {
finish_recovery();
switch (status) {
case INSTALL_SUCCESS:
case INSTALL_NONE:
+ case INSTALL_SKIPPED:
+ case INSTALL_RETRY:
+ case INSTALL_KEY_INTERRUPTED:
ui->SetBackground(RecoveryUI::NO_COMMAND);
break;
@@ -488,6 +332,12 @@ static Device::BuiltinAction prompt_and_wait(Device* device, int status) {
case INSTALL_CORRUPT:
ui->SetBackground(RecoveryUI::ERROR);
break;
+
+ case INSTALL_REBOOT:
+ // All the reboots should have been handled prior to entering PromptAndWait() or immediately
+ // after installing a package.
+ LOG(FATAL) << "Invalid status code of INSTALL_REBOOT";
+ break;
}
ui->SetProgressType(RecoveryUI::EMPTY);
@@ -506,6 +356,8 @@ static Device::BuiltinAction prompt_and_wait(Device* device, int status) {
: device->InvokeMenuItem(chosen_item);
switch (chosen_action) {
+ case Device::REBOOT_FROM_FASTBOOT: // Can not happen
+ case Device::SHUTDOWN_FROM_FASTBOOT: // Can not happen
case Device::NO_ACTION:
break;
@@ -588,8 +440,7 @@ static Device::BuiltinAction prompt_and_wait(Device* device, int status) {
break;
}
case Device::MOUNT_SYSTEM:
- // the system partition is mounted at /mnt/system
- if (ensure_path_mounted_at(get_system_root(), "/mnt/system") != -1) {
+ if (ensure_path_mounted_at(android::fs_mgr::GetSystemRoot(), "/mnt/system") != -1) {
ui->Print("Mounted /system.\n");
}
break;
@@ -851,7 +702,7 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
ui->Print("Supported API: %d\n", kRecoveryApiVersion);
- int status = INSTALL_SUCCESS;
+ InstallResult status = INSTALL_SUCCESS;
// next_action indicates the next target to reboot into upon finishing the install. It could be
// overridden to a different reboot target per user request.
Device::BuiltinAction next_action = shutdown_after ? Device::SHUTDOWN : Device::REBOOT;
@@ -881,7 +732,7 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
set_retry_bootloader_message(retry_count + 1, args);
}
- status = install_package(update_package, should_wipe_cache, true, retry_count, ui);
+ status = InstallPackage(update_package, should_wipe_cache, true, retry_count, ui);
if (status != INSTALL_SUCCESS) {
ui->Print("Installation aborted.\n");
@@ -895,8 +746,8 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
// Print retry count on screen.
ui->Print("Retry attempt %d\n", retry_count);
- // Reboot and retry the update
- if (!reboot("reboot,recovery")) {
+ // Reboot back into recovery to retry the update.
+ if (!Reboot("recovery")) {
ui->Print("Reboot failed\n");
} else {
while (true) {
@@ -934,7 +785,7 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
status = INSTALL_ERROR;
}
} else if (should_wipe_ab) {
- if (!wipe_ab_device(wipe_package_size)) {
+ if (!WipeAbDevice(device, wipe_package_size)) {
status = INSTALL_ERROR;
}
} else if (sideload) {
@@ -989,7 +840,7 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
// for 5s followed by an automatic reboot.
if (status != INSTALL_REBOOT) {
if (status == INSTALL_NONE || ui->IsTextVisible()) {
- Device::BuiltinAction temp = prompt_and_wait(device, status);
+ auto temp = PromptAndWait(device, status);
if (temp != Device::NO_ACTION) {
next_action = temp;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 10:24:21 +0200