Merge Android 14 QPR2 to AOSP main

Bug: 319669529
Merged-In: Ib12b30703f889fb1b0172fbe40415f4e6936d63e
Change-Id: I9b746fcebbdff92a2fa86ca2fff0452cc234e067

1 files changed, 562 insertions, 0 deletions

diff --git a/bootctrl/aidl/BootControl.cpp b/bootctrl/aidl/BootControl.cpp
new file mode 100644
index 0000000..e771845
--- /dev/null
+++ b/bootctrl/aidl/BootControl.cpp
@@ -0,0 +1,562 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+#define LOG_TAG "bootcontrolhal"
+
+#include "BootControl.h"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+#include <bootloader_message/bootloader_message.h>
+#include <cutils/properties.h>
+#include <libboot_control/libboot_control.h>
+#include <log/log.h>
+#include <trusty/tipc.h>
+
+#include "DevInfo.h"
+#include "GptUtils.h"
+
+using HIDLMergeStatus = ::android::bootable::BootControl::MergeStatus;
+using ndk::ScopedAStatus;
+
+using android::bootable::GetMiscVirtualAbMergeStatus;
+using android::bootable::InitMiscVirtualAbMessageIfNeeded;
+using android::bootable::SetMiscVirtualAbMergeStatus;
+
+namespace aidl::android::hardware::boot {
+
+namespace {
+
+// clang-format off
+
+#define BOOT_A_PATH     "/dev/block/by-name/boot_a"
+#define BOOT_B_PATH     "/dev/block/by-name/boot_b"
+#define DEVINFO_PATH    "/dev/block/by-name/devinfo"
+
+#define BLOW_AR_PATH    "/sys/kernel/boot_control/blow_ar"
+
+// slot flags
+#define AB_ATTR_PRIORITY_SHIFT      52
+#define AB_ATTR_PRIORITY_MASK       (3UL << AB_ATTR_PRIORITY_SHIFT)
+#define AB_ATTR_ACTIVE_SHIFT        54
+#define AB_ATTR_ACTIVE              (1UL << AB_ATTR_ACTIVE_SHIFT)
+#define AB_ATTR_RETRY_COUNT_SHIFT   (55)
+#define AB_ATTR_RETRY_COUNT_MASK    (7UL << AB_ATTR_RETRY_COUNT_SHIFT)
+#define AB_ATTR_SUCCESSFUL          (1UL << 58)
+#define AB_ATTR_UNBOOTABLE          (1UL << 59)
+
+#define AB_ATTR_MAX_PRIORITY        3UL
+#define AB_ATTR_MAX_RETRY_COUNT     3UL
+
+// clang-format on
+
+static std::string getDevPath(int32_t in_slot) {
+    char real_path[PATH_MAX];
+
+    const char *path = in_slot == 0 ? BOOT_A_PATH : BOOT_B_PATH;
+
+    int ret = readlink(path, real_path, sizeof real_path);
+    if (ret < 0) {
+        ALOGE("readlink failed for boot device %s\n", strerror(errno));
+        return std::string();
+    }
+
+    std::string dp(real_path);
+    // extract /dev/sda.. part
+    return dp.substr(0, sizeof "/dev/block/sdX" - 1);
+}
+
+static bool isSlotFlagSet(int32_t in_slot, uint64_t flag) {
+    std::string dev_path = getDevPath(in_slot);
+    if (dev_path.empty()) {
+        ALOGI("Could not get device path for slot %d\n", in_slot);
+        return false;
+    }
+
+    GptUtils gpt(dev_path);
+    if (gpt.Load()) {
+        ALOGI("failed to load gpt data\n");
+        return false;
+    }
+
+    gpt_entry *e = gpt.GetPartitionEntry(in_slot ? "boot_b" : "boot_a");
+    if (e == nullptr) {
+        ALOGI("failed to get gpt entry\n");
+        return false;
+    }
+
+    return !!(e->attr & flag);
+}
+
+static bool setSlotFlag(int32_t in_slot, uint64_t flag) {
+    std::string dev_path = getDevPath(in_slot);
+    if (dev_path.empty()) {
+        ALOGI("Could not get device path for slot %d\n", in_slot);
+        return false;
+    }
+
+    GptUtils gpt(dev_path);
+    if (gpt.Load()) {
+        ALOGI("failed to load gpt data\n");
+        return false;
+    }
+
+    gpt_entry *e = gpt.GetPartitionEntry(in_slot ? "boot_b" : "boot_a");
+    if (e == nullptr) {
+        ALOGI("failed to get gpt entry\n");
+        return false;
+    }
+
+    e->attr |= flag;
+    gpt.Sync();
+
+    return true;
+}
+
+static bool is_devinfo_valid;
+static bool is_devinfo_initialized;
+static std::mutex devinfo_lock;
+static devinfo_t devinfo;
+
+static bool isDevInfoValid() {
+    const std::lock_guard<std::mutex> lock(devinfo_lock);
+
+    if (is_devinfo_initialized) {
+        return is_devinfo_valid;
+    }
+
+    is_devinfo_initialized = true;
+
+    ::android::base::unique_fd fd(open(DEVINFO_PATH, O_RDONLY));
+    ::android::base::ReadFully(fd, &devinfo, sizeof devinfo);
+
+    if (devinfo.magic != DEVINFO_MAGIC) {
+        return is_devinfo_valid;
+    }
+
+    uint32_t version = ((uint32_t)devinfo.ver_major << 16) | devinfo.ver_minor;
+    // only version 3.3+ supports A/B data
+    if (version >= 0x0003'0003) {
+        is_devinfo_valid = true;
+    }
+
+    return is_devinfo_valid;
+}
+
+static bool DevInfoSync() {
+    if (!isDevInfoValid()) {
+        return false;
+    }
+
+    ::android::base::unique_fd fd(open(DEVINFO_PATH, O_WRONLY | O_DSYNC));
+    return ::android::base::WriteFully(fd, &devinfo, sizeof devinfo);
+}
+
+static void DevInfoInitSlot(devinfo_ab_slot_data_t &slot_data) {
+    slot_data.retry_count = AB_ATTR_MAX_RETRY_COUNT;
+    slot_data.unbootable = 0;
+    slot_data.successful = 0;
+    slot_data.active = 1;
+    slot_data.fastboot_ok = 0;
+}
+
+static int blow_otp_AR(bool secure) {
+    static const char *dev_name = "/dev/trusty-ipc-dev0";
+    static const char *otp_name = "com.android.trusty.otp_manager.tidl";
+    int fd = 1, ret = 0;
+    uint32_t cmd = secure? OTP_CMD_write_antirbk_secure_ap : OTP_CMD_write_antirbk_non_secure_ap;
+    fd = tipc_connect(dev_name, otp_name);
+    if (fd < 0) {
+        ALOGI("Failed to connect to OTP_MGR ns TA - is it missing?\n");
+        ret = -1;
+        return ret;
+    }
+
+    struct otp_mgr_req_base req = {
+        .command = cmd,
+        .resp_payload_size = 0,
+    };
+    struct iovec iov[] = {
+        {
+            .iov_base = &req,
+            .iov_len = sizeof(req),
+        },
+    };
+
+    size_t rc = tipc_send(fd, iov, 1, NULL, 0);
+    if (rc != sizeof(req)) {
+        ALOGI("Send fail! %zx\n", rc);
+        return rc;
+    }
+
+    struct otp_mgr_rsp_base resp;
+    rc = read(fd, &resp, sizeof(resp));
+    if (rc < 0) {
+        ALOGI("Read fail! %zx\n", rc);
+        return rc;
+    }
+
+    if (rc < sizeof(resp)) {
+        ALOGI("Not enough data! %zx\n", rc);
+        return -EIO;
+    }
+
+    if (resp.command != (cmd | OTP_RESP_BIT)) {
+        ALOGI("Wrong command! %x\n", resp.command);
+        return -EINVAL;
+    }
+
+    if (resp.result != 0) {
+        fprintf(stderr, "AR writing error! %x\n", resp.result);
+        return -EINVAL;
+    }
+
+    tipc_close(fd);
+    return 0;
+}
+
+static bool blowAR_zuma() {
+    int ret = blow_otp_AR(true);
+    if (ret) {
+        ALOGI("Blow secure anti-rollback OTP failed");
+        return false;
+    }
+
+    ret = blow_otp_AR(false);
+    if (ret) {
+        ALOGI("Blow non-secure anti-rollback OTP failed");
+        return false;
+    }
+
+    return true;
+}
+
+static bool blowAR_gs101() {
+    ::android::base::unique_fd fd(open(BLOW_AR_PATH, O_WRONLY | O_DSYNC));
+    return ::android::base::WriteStringToFd("1", fd);
+}
+
+static bool blowAR() {
+    char platform[PROPERTY_VALUE_MAX];
+    property_get("ro.boot.hardware.platform", platform, "");
+
+    if (std::string(platform) == "gs101") {
+        return blowAR_gs101();
+    } else if (std::string(platform) == "gs201" || std::string(platform) == "zuma") {
+        return blowAR_zuma();
+    }
+
+    return true;
+}
+
+static constexpr MergeStatus ToAIDLMergeStatus(HIDLMergeStatus status) {
+    switch (status) {
+        case HIDLMergeStatus::NONE:
+            return MergeStatus::NONE;
+        case HIDLMergeStatus::UNKNOWN:
+            return MergeStatus::UNKNOWN;
+        case HIDLMergeStatus::SNAPSHOTTED:
+            return MergeStatus::SNAPSHOTTED;
+        case HIDLMergeStatus::MERGING:
+            return MergeStatus::MERGING;
+        case HIDLMergeStatus::CANCELLED:
+            return MergeStatus::CANCELLED;
+    }
+}
+
+static constexpr HIDLMergeStatus ToHIDLMergeStatus(MergeStatus status) {
+    switch (status) {
+        case MergeStatus::NONE:
+            return HIDLMergeStatus::NONE;
+        case MergeStatus::UNKNOWN:
+            return HIDLMergeStatus::UNKNOWN;
+        case MergeStatus::SNAPSHOTTED:
+            return HIDLMergeStatus::SNAPSHOTTED;
+        case MergeStatus::MERGING:
+            return HIDLMergeStatus::MERGING;
+        case MergeStatus::CANCELLED:
+            return HIDLMergeStatus::CANCELLED;
+    }
+}
+
+}  // namespace
+
+BootControl::BootControl() {
+    CHECK(InitMiscVirtualAbMessageIfNeeded());
+}
+
+ScopedAStatus BootControl::getActiveBootSlot(int32_t* _aidl_return) {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        *_aidl_return = 0;
+        return ScopedAStatus::ok();
+    }
+
+    if (isDevInfoValid()) {
+        *_aidl_return = devinfo.ab_data.slots[1].active ? 1 : 0;
+        return ScopedAStatus::ok();
+    }
+    *_aidl_return = isSlotFlagSet(1, AB_ATTR_ACTIVE) ? 1 : 0;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getCurrentSlot(int32_t* _aidl_return) {
+    char suffix[PROPERTY_VALUE_MAX];
+    property_get("ro.boot.slot_suffix", suffix, "_a");
+    *_aidl_return = std::string(suffix) == "_b" ? 1 : 0;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getNumberSlots(int32_t* _aidl_return) {
+    int32_t slots = 0;
+
+    if (access(BOOT_A_PATH, F_OK) == 0)
+        slots++;
+
+    if (access(BOOT_B_PATH, F_OK) == 0)
+        slots++;
+
+    *_aidl_return = slots;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getSnapshotMergeStatus(MergeStatus* _aidl_return) {
+    HIDLMergeStatus status;
+    int32_t current_slot = 0;
+    getCurrentSlot(&current_slot);
+    if (!GetMiscVirtualAbMergeStatus(current_slot, &status)) {
+        *_aidl_return = MergeStatus::UNKNOWN;
+        return ScopedAStatus::ok();
+    }
+    *_aidl_return = ToAIDLMergeStatus(status);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getSuffix(int32_t in_slot, std::string* _aidl_return) {
+    *_aidl_return = in_slot == 0 ? "_a" : in_slot == 1 ? "_b" : "";
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::isSlotBootable(int32_t in_slot, bool* _aidl_return) {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        *_aidl_return = false;
+        return ScopedAStatus::ok();
+    }
+    if (in_slot >= slots)
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+
+    bool unbootable;
+    if (isDevInfoValid()) {
+        auto &slot_data = devinfo.ab_data.slots[in_slot];
+        unbootable = !!slot_data.unbootable;
+    } else {
+        unbootable = isSlotFlagSet(in_slot, AB_ATTR_UNBOOTABLE);
+    }
+
+    *_aidl_return = unbootable ? false: true;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::isSlotMarkedSuccessful(int32_t in_slot, bool* _aidl_return) {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        // just return true so that we don't we another call trying to mark it as successful
+        // when there is no slots
+        *_aidl_return = true;
+        return ScopedAStatus::ok();
+    }
+    if (in_slot >= slots)
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+
+    bool successful;
+    if (isDevInfoValid()) {
+        auto &slot_data = devinfo.ab_data.slots[in_slot];
+        successful = !!slot_data.successful;
+    } else {
+        successful = isSlotFlagSet(in_slot, AB_ATTR_SUCCESSFUL);
+    }
+
+    *_aidl_return = successful ? true : false;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::markBootSuccessful() {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        // no slots, just return true otherwise Android keeps trying
+        return ScopedAStatus::ok();
+    }
+
+    bool ret;
+    int32_t current_slot = 0;
+    getCurrentSlot(&current_slot);
+    if (isDevInfoValid()) {
+        auto const slot = current_slot;
+        devinfo.ab_data.slots[slot].successful = 1;
+        ret = DevInfoSync();
+    } else {
+        ret = setSlotFlag(current_slot, AB_ATTR_SUCCESSFUL);
+    }
+
+    if (!ret) {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(COMMAND_FAILED,
+                                                                  "Failed to set successful flag");
+    }
+
+    if (!blowAR()) {
+        ALOGE("Failed to blow anti-rollback counter");
+        // Ignore the error, since ABL will re-trigger it on reboot
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::setActiveBootSlot(int32_t in_slot) {
+    if (in_slot >= 2) {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+    }
+
+    if (isDevInfoValid()) {
+        auto &active_slot_data = devinfo.ab_data.slots[in_slot];
+        auto &inactive_slot_data = devinfo.ab_data.slots[!in_slot];
+
+        inactive_slot_data.active = 0;
+        DevInfoInitSlot(active_slot_data);
+
+        if (!DevInfoSync()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not update DevInfo data");
+        }
+    } else {
+        std::string dev_path = getDevPath(in_slot);
+        if (dev_path.empty()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not get device path for slot");
+        }
+
+        GptUtils gpt(dev_path);
+        if (gpt.Load()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(COMMAND_FAILED,
+                                                                      "failed to load gpt data");
+        }
+
+        gpt_entry *active_entry = gpt.GetPartitionEntry(in_slot == 0 ? "boot_a" : "boot_b");
+        gpt_entry *inactive_entry = gpt.GetPartitionEntry(in_slot == 0 ? "boot_b" : "boot_a");
+        if (active_entry == nullptr || inactive_entry == nullptr) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "failed to get entries for boot partitions");
+        }
+
+        ALOGV("slot active attributes %lx\n", active_entry->attr);
+        ALOGV("slot inactive attributes %lx\n", inactive_entry->attr);
+
+        // update attributes for active and inactive
+        inactive_entry->attr &= ~AB_ATTR_ACTIVE;
+        active_entry->attr = AB_ATTR_ACTIVE | (AB_ATTR_MAX_PRIORITY << AB_ATTR_PRIORITY_SHIFT) |
+                             (AB_ATTR_MAX_RETRY_COUNT << AB_ATTR_RETRY_COUNT_SHIFT);
+    }
+
+    char boot_dev[PROPERTY_VALUE_MAX];
+    property_get("ro.boot.bootdevice", boot_dev, "");
+    if (boot_dev[0] == '\0') {
+        ALOGI("failed to get ro.boot.bootdevice. try ro.boot.boot_devices\n");
+        property_get("ro.boot.boot_devices", boot_dev, "");
+        if (boot_dev[0] == '\0') {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "invalid ro.boot.bootdevice and ro.boot.boot_devices prop");
+        }
+    }
+
+    std::string boot_lun_path =
+            std::string("/sys/devices/platform/") + boot_dev + "/pixel/boot_lun_enabled";
+    int fd = open(boot_lun_path.c_str(), O_RDWR | O_DSYNC);
+    if (fd < 0) {
+        // Try old path for kernels < 5.4
+        // TODO: remove once kernel 4.19 support is deprecated
+        std::string boot_lun_path =
+                std::string("/sys/devices/platform/") + boot_dev + "/attributes/boot_lun_enabled";
+        fd = open(boot_lun_path.c_str(), O_RDWR | O_DSYNC);
+        if (fd < 0) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "failed to open ufs attr boot_lun_enabled");
+        }
+    }
+
+    //
+    // bBootLunEn
+    // 0x1  => Boot LU A = enabled, Boot LU B = disable
+    // 0x2  => Boot LU A = disable, Boot LU B = enabled
+    //
+    int ret = ::android::base::WriteStringToFd(in_slot == 0 ? "1" : "2", fd);
+    close(fd);
+    if (ret < 0) {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                COMMAND_FAILED, "faied to write boot_lun_enabled attribute");
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::setSlotAsUnbootable(int32_t in_slot) {
+    if (in_slot >= 2)
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+
+    if (isDevInfoValid()) {
+        auto &slot_data = devinfo.ab_data.slots[in_slot];
+        slot_data.unbootable = 1;
+        if (!DevInfoSync()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not update DevInfo data");
+        }
+    } else {
+        std::string dev_path = getDevPath(in_slot);
+        if (dev_path.empty()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not get device path for slot");
+        }
+
+        GptUtils gpt(dev_path);
+        gpt.Load();
+
+        gpt_entry *e = gpt.GetPartitionEntry(in_slot ? "boot_b" : "boot_a");
+        e->attr |= AB_ATTR_UNBOOTABLE;
+
+        gpt.Sync();
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::setSnapshotMergeStatus(MergeStatus in_status) {
+    int32_t current_slot = 0;
+    getCurrentSlot(&current_slot);
+    if (!SetMiscVirtualAbMergeStatus(current_slot, ToHIDLMergeStatus(in_status)))
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(COMMAND_FAILED,
+                                                                  "Operation failed");
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::boot