upload android base code part3

android/bootable/recovery/otafault/config.cpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#include <map>
+#include <string>
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <android-base/stringprintf.h>
+#include <ziparchive/zip_archive.h>
+
+#include "config.h"
+#include "ota_io.h"
+
+#define OTAIO_MAX_FNAME_SIZE 128
+
+static ZipArchiveHandle archive;
+static bool is_retry = false;
+static std::map<std::string, bool> should_inject_cache;
+
+static std::string get_type_path(const char* io_type) {
+    return android::base::StringPrintf("%s/%s", OTAIO_BASE_DIR, io_type);
+}
+
+void ota_io_init(ZipArchiveHandle za, bool retry) {
+    archive = za;
+    is_retry = retry;
+    ota_set_fault_files();
+}
+
+bool should_fault_inject(const char* io_type) {
+    // archive will be NULL if we used an entry point other
+    // than updater/updater.cpp:main
+    if (archive == nullptr || is_retry) {
+        return false;
+    }
+    const std::string type_path = get_type_path(io_type);
+    if (should_inject_cache.find(type_path) != should_inject_cache.end()) {
+        return should_inject_cache[type_path];
+    }
+    ZipString zip_type_path(type_path.c_str());
+    ZipEntry entry;
+    int status = FindEntry(archive, zip_type_path, &entry);
+    should_inject_cache[type_path] = (status == 0);
+    return (status == 0);
+}
+
+bool should_hit_cache() {
+    return should_fault_inject(OTAIO_CACHE);
+}
+
+std::string fault_fname(const char* io_type) {
+    std::string type_path = get_type_path(io_type);
+    std::string fname;
+    fname.resize(OTAIO_MAX_FNAME_SIZE);
+    ZipString zip_type_path(type_path.c_str());
+    ZipEntry entry;
+    int status = FindEntry(archive, zip_type_path, &entry);
+    ExtractToMemory(archive, &entry, reinterpret_cast<uint8_t*>(&fname[0]), OTAIO_MAX_FNAME_SIZE);
+    return fname;
+}