Get partition file system type from Fastboot HAL

Partition type is required for fastbootd to
format partitions.

Test: make
Bug: 79480454
Change-Id: I49f21fe6f1626cf3da566b33cc84131b3e3c85ff

fastboot/1.0/Android.bp

@@ -0,0 +1,22 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.fastboot@1.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IFastboot.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    types: [
+        "Status",
+        "Result",
+    ],
+    gen_java: false,
+}
+

fastboot/1.0/IFastboot.hal

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+package android.hardware.fastboot@1.0;
+
+/**
+ * IFastboot interface implements vendor specific fastboot commands.
+ */
+interface IFastboot {
+    /**
+     * Returns the file system type of the partition. This is only required for
+     * physical partitions that need to be wiped and reformatted.
+     *
+     * @return type Can be ext4, f2fs or raw.
+     * @return result SUCCESS if the operation is successful,
+     *     FAILURE_UNKNOWN if the partition is invalid or does not require
+     *     reformatting.
+     */
+    getPartitionType(string partitionName) generates (FileSystemType type, Result result);
+};

fastboot/1.0/types.hal

@@ -0,0 +1,61 @@
+/**
+ * Copyright (C) 2018 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.
+ */
+
+package android.hardware.fastboot@1.0;
+
+enum Status : uint32_t {
+    /**
+     * Operation completed without errors.
+     */
+    SUCCESS,
+    /**
+     * Unsupported operation.
+     */
+    NOT_SUPPORTED,
+    /**
+     * Bad argument.
+     */
+    INVALID_ARGUMENT,
+    /**
+     * Operation failed due to unknown reason.
+     */
+    FAILURE_UNKNOWN
+};
+
+enum FileSystemType : uint8_t {
+    /**
+     * Fourth extended file system.
+     */
+    EXT4,
+    /**
+     * Flash Friendly File System.
+     */
+    F2FS,
+    /**
+     * Raw file system.
+     */
+    RAW
+};
+
+struct Result {
+    Status status;
+    /**
+     * Error message pertaining to the status. It must be a failure message for
+     * Status FAILURE_UNKNOWN/NOT_SUPPORTED or an informative message for
+     * Status SUCCESS.
+     */
+    string error;
+};