bootctrl: Add support for boot control hal V1.2

V1_2::IBootControl adds getActiveBootSlot() API.
Enhance libboot_control_qti library to implement this API.

Change-Id: I32aea39b319f6844d82bcc17bb636add36a1f659

5 files changed, 266 insertions, 0 deletions

diff --git a/1.1/libboot_control_qti/libboot_control_qti.cpp b/1.1/libboot_control_qti/libboot_control_qti.cpp
index 86887b9..b21a958 100644
--- a/1.1/libboot_control_qti/libboot_control_qti.cpp
+++ b/1.1/libboot_control_qti/libboot_control_qti.cpp
@@ -725,3 +725,27 @@ MergeStatus get_snapshot_merge_status()
 	ALOGI("%s: Returning MergeStatus = %d\n", __func__, status);
 	return status;
 }
+
+int get_active_boot_slot()
+{
+	int slot = 0;
+	char bootPartition[MAX_GPT_NAME_SIZE + 1] = {0};
+
+	for (int i = 0; slot_suffix_arr[i] != NULL; i++) {
+		snprintf(bootPartition, sizeof(bootPartition) - 1,
+			"boot%s", slot_suffix_arr[i]);
+
+			if (get_partition_attribute(bootPartition,
+				ATTR_SLOT_ACTIVE) == 1) {
+				slot = i;
+				break;
+			}
+	}
+
+	if (boot_control_check_slot_sanity(slot) != 0) {
+		ALOGE("%s: Failed to validate active slot configuration", __func__);
+		return -1;
+	} else {
+		return slot;
+	}
+}
diff --git a/1.1/libboot_control_qti/libboot_control_qti.h b/1.1/libboot_control_qti/libboot_control_qti.h
index c669a0e..bc49d65 100644
--- a/1.1/libboot_control_qti/libboot_control_qti.h
+++ b/1.1/libboot_control_qti/libboot_control_qti.h
@@ -49,4 +49,7 @@ const char* get_suffix(unsigned slot);
 bool set_snapshot_merge_status(MergeStatus status);
 MergeStatus get_snapshot_merge_status();
 
+// IBootControl 1.2 methods
+int get_active_boot_slot();
+
 bool mGvmqPlatform = false;
diff --git a/1.2/impl/Android.bp b/1.2/impl/Android.bp
new file mode 100644
index 0000000..db5ed32
--- /dev/null
+++ b/1.2/impl/Android.bp
@@ -0,0 +1,21 @@
+cc_library_shared {
+    name: "android.hardware.boot@1.2-impl-qti",
+    stem: "android.hardware.boot@1.0-impl-1.2-qti",
+    defaults: [
+        "hidl_defaults",
+    ],
+    relative_install_path: "hw",
+    vendor: true,
+    recovery_available: true,
+    srcs: ["BootControl.cpp"],
+    shared_libs: [
+        "liblog",
+        "libhidlbase",
+        "libhardware",
+        "libutils",
+        "android.hardware.boot@1.0",
+        "android.hardware.boot@1.1",
+        "android.hardware.boot@1.2",
+        "libboot_control_qti",
+    ],
+}
diff --git a/1.2/impl/BootControl.cpp b/1.2/impl/BootControl.cpp
new file mode 100644
index 0000000..9f5bc71
--- /dev/null
+++ b/1.2/impl/BootControl.cpp
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define LOG_TAG "android.hardware.boot@1.2-impl-qti"
+
+#include <memory>
+
+#include <log/log.h>
+
+#include "BootControl.h"
+
+namespace android {
+namespace hardware {
+namespace boot {
+namespace V1_2 {
+namespace implementation {
+
+using ::android::hardware::boot::V1_0::CommandResult;
+
+bool BootControl::Init() {
+    return bootcontrol_init();
+}
+
+// Methods from ::android::hardware::boot::V1_0::IBootControl.
+Return<uint32_t> BootControl::getNumberSlots() {
+    return get_number_slots();
+}
+
+Return<uint32_t> BootControl::getCurrentSlot() {
+    return get_current_slot();
+}
+
+Return<void> BootControl::markBootSuccessful(markBootSuccessful_cb _hidl_cb) {
+    int ret = mark_boot_successful();
+    struct CommandResult cr;
+    cr.success = (ret == 0);
+    cr.errMsg = strerror(-ret);
+    _hidl_cb(cr);
+    return Void();
+}
+
+Return<void> BootControl::setActiveBootSlot(uint32_t slot, setActiveBootSlot_cb _hidl_cb) {
+    int ret = set_active_boot_slot(slot);
+    struct CommandResult cr;
+    cr.success = (ret == 0);
+    cr.errMsg = strerror(-ret);
+    _hidl_cb(cr);
+    return Void();
+}
+
+Return<void> BootControl::setSlotAsUnbootable(uint32_t slot, setSlotAsUnbootable_cb _hidl_cb) {
+    int ret = set_slot_as_unbootable(slot);
+    struct CommandResult cr;
+    cr.success = (ret == 0);
+    cr.errMsg = strerror(-ret);
+    _hidl_cb(cr);
+    return Void();
+}
+
+Return<BoolResult> BootControl::isSlotBootable(uint32_t slot) {
+    int32_t ret = is_slot_bootable(slot);
+    if (ret < 0) {
+        return BoolResult::INVALID_SLOT;
+    }
+    return ret ? BoolResult::TRUE : BoolResult::FALSE;
+}
+
+Return<BoolResult> BootControl::isSlotMarkedSuccessful(uint32_t slot) {
+    int32_t ret = is_slot_marked_successful(slot);
+    if (ret < 0) {
+        return BoolResult::INVALID_SLOT;
+    }
+    return ret ? BoolResult::TRUE : BoolResult::FALSE;
+}
+
+Return<void> BootControl::getSuffix(uint32_t slot, getSuffix_cb _hidl_cb) {
+    hidl_string ans;
+    const char* suffix = get_suffix(slot);
+    if (suffix) {
+        ans = suffix;
+    }
+    _hidl_cb(ans);
+    return Void();
+}
+
+// Methods from ::android::hardware::boot::V1_1::IBootControl.
+Return<bool> BootControl::setSnapshotMergeStatus(MergeStatus status) {
+    return set_snapshot_merge_status(status);
+}
+
+Return<MergeStatus> BootControl::getSnapshotMergeStatus() {
+    return get_snapshot_merge_status();
+}
+
+// Methods from ::android::hardware::boot::V1_2::IBootControl.
+Return<uint32_t> BootControl::getActiveBootSlot() {
+    int32_t ret = get_active_boot_slot();
+    return ret < 0 ? 0 : ret;
+}
+
+IBootControl* HIDL_FETCH_IBootControl(const char* /* hal */) {
+    auto module = std::make_unique<BootControl>();
+    if (!module->Init()) {
+        ALOGE("Could not initialize BootControl module");
+        return nullptr;
+    }
+    return module.release();
+}
+
+}  // namespace implementation
+}  // namespace V1_2
+}  // namespace boot
+}  // namespace hardware
+}  // namespace android
diff --git a/1.2/impl/BootControl.h b/1.2/impl/BootControl.h
new file mode 100644
index 0000000..187152c
--- /dev/null
+++ b/1.2/impl/BootControl.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <android/hardware/boot/1.2/IBootControl.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <libboot_control_qti.h>
+
+namespace android {
+namespace hardware {
+namespace boot {
+namespace V1_2 {
+namespace implementation {
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::boot::V1_0::BoolResult;
+using ::android::hardware::boot::V1_1::MergeStatus;
+using ::android::hardware::boot::V1_2::IBootControl;
+
+class BootControl : public IBootControl {
+  public:
+    bool Init();
+
+    // Methods from ::android::hardware::boot::V1_0::IBootControl.
+    Return<uint32_t> getNumberSlots() override;
+    Return<uint32_t> getCurrentSlot() override;
+    Return<void> markBootSuccessful(markBootSuccessful_cb _hidl_cb) override;
+    Return<void> setActiveBootSlot(uint32_t slot, setActiveBootSlot_cb _hidl_cb) override;
+    Return<void> setSlotAsUnbootable(uint32_t slot, setSlotAsUnbootable_cb _hidl_cb) override;
+    Return<BoolResult> isSlotBootable(uint32_t slot) override;
+    Return<BoolResult> isSlotMarkedSuccessful(uint32_t slot) override;
+    Return<void> getSuffix(uint32_t slot, getSuffix_cb _hidl_cb) override;
+
+    // Methods from ::android::hardware::boot::V1_1::IBootControl.
+    Return<bool> setSnapshotMergeStatus(MergeStatus status) override;
+    Return<MergeStatus> getSnapshotMergeStatus() override;
+
+    // Methods from ::android::hardware::boot::V1_2::IBootControl.
+    Return<uint32_t> getActiveBootSlot() override;
+
+};
+
+extern "C" IBootControl* HIDL_FETCH_IBootControl(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_2
+}  // namespace boot
+}  // namespace hardware
+}  // namespace android