!941 feat：add gpio driver fuzz test

Merge pull request !941 from 马海/master

support/platform/test/fuzztest/BUILD.gn

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+# Copyright (c) 2022 Huawei Device Co., Ltd.
+#
+# HDF is dual licensed: you can use it either under the terms of
+# the GPL, or the BSD license, at your option.
+# See the LICENSE file in the root of this repository for complete details.
+
+group("hdf_platform_fuzztest") {
+  testonly = true
+  deps = []
+  deps += [ "gpio_fuzzer:fuzztest" ]
+}

support/platform/test/fuzztest/gpio_fuzzer/BUILD.gn

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+# Copyright (c) 2022 Huawei Device Co., Ltd.
+#
+# HDF is dual licensed: you can use it either under the terms of
+# the GPL, or the BSD license, at your option.
+# See the LICENSE file in the root of this repository for complete details.
+
+import("//build/config/features.gni")
+import("//build/ohos.gni")
+import("//build/test.gni")
+module_output_path = "hdf/platform"
+
+ohos_fuzztest("GpioFuzzTest") {
+  module_out_path = module_output_path
+
+  fuzz_config_file =
+      "//drivers/framework/support/platform/test/fuzztest/gpio_fuzzer"
+
+  include_dirs = [
+    "//drivers/framework/support/platform/test/fuzztest/gpio_fuzzer",
+    "//drivers/framework/include/platform",
+  ]
+
+  cflags = [
+    "-g",
+    "-O0",
+    "-Wno-unused-variable",
+    "-fno-omit-frame-pointer",
+  ]
+
+  sources = [ "gpio_fuzzer.cpp" ]
+
+  deps = [ "//drivers/adapter/uhdf2/platform:libhdf_platform" ]
+
+  external_deps = [
+    "hiviewdfx_hilog_native:libhilog",
+    "utils_base:utils",
+  ]
+}
+
+group("fuzztest") {
+  testonly = true
+  deps = []
+  deps += [ ":GpioFuzzTest" ]
+}

support/platform/test/fuzztest/gpio_fuzzer/corpus/init

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+# Copyright (c) 2022 Huawei Device Co., Ltd.
+#
+# HDF is dual licensed: you can use it either under the terms of
+# the GPL, or the BSD license, at your option.
+# See the LICENSE file in the root of this repository for complete details.
+
+FUZZ

support/platform/test/fuzztest/gpio_fuzzer/gpio_fuzzer.cpp

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+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * 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 "gpio_fuzzer.h"
+#include <cstdlib>
+#include <ctime>
+#include <iostream>
+#include <random>
+#include <cstddef>
+#include "gpio_if.h"
+#include "hdf_base.h"
+#include "securec.h"
+
+using namespace std;
+
+namespace {
+constexpr int32_t MIN = 0;
+constexpr int32_t MAX = 2;
+const uint16_t gpioTestNum = 3;
+const int32_t MAX_LEN = 10;
+}
+
+struct AllParameters {
+    uint16_t descVal;
+    uint16_t descDir;
+    uint16_t descMode;
+};
+
+union ConvertToParam {
+    uint8_t data[MAX_LEN];
+    struct AllParameters params;
+};
+
+static int32_t GpioTestIrqHandler(uint16_t gpio, void *data)
+{
+    (void)gpio;
+    (void)data;
+    return 0;
+}
+
+static int32_t randNum()
+{
+    std::random_device rd;
+    std::default_random_engine engine(rd());
+    std::uniform_int_distribution<int32_t> randomNum(MIN, MAX);
+    return randomNum(engine);
+}
+
+namespace OHOS {
+    bool GpioFuzzTest(const uint8_t* data, size_t size)
+    {
+        union ConvertToParam convertor;
+
+        if (data == nullptr) {
+            return false;
+        }
+
+        if (memcpy_s (convertor.data, MAX_LEN, data, MAX_LEN) != EOK) {
+            return false;
+        }
+
+        int32_t number = randNum();
+        switch (static_cast<ApiNumber>(number)) {
+            case ApiNumber::NUM_ZERO:
+                GpioWrite(gpioTestNum, convertor.params.descVal);
+                break;
+            case ApiNumber::NUM_ONE:
+                GpioSetDir(gpioTestNum, convertor.params.descDir);
+                break;
+            case ApiNumber::NUM_TWO:
+                GpioSetIrq(gpioTestNum, convertor.params.descMode, GpioTestIrqHandler, &data);
+                break;
+            default:
+                break;
+        }
+        return true;
+    }
+}
+
+/* Fuzzer entry point */
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    /* Run your code on data */
+    OHOS::GpioFuzzTest(data, size);
+    return 0;
+}

support/platform/test/fuzztest/gpio_fuzzer/gpio_fuzzer.h

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+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ *
+ * HDF is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ * See the LICENSE file in the root of this repository for complete details.
+ */
+
+#ifndef GPIO_FUZZER
+#define GPIO_FUZZER
+
+#define FUZZ_PROJECT_NAME "gpio_fuzzer"
+
+enum class ApiNumber {
+    NUM_ZERO = 0,
+    NUM_ONE,
+    NUM_TWO,
+};
+
+#endif

support/platform/test/fuzztest/gpio_fuzzer/project.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- 
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ *
+ * HDF is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ * See the LICENSE file in the root of this repository for complete details.
+ */
+-->
+<fuzz_config>
+  <fuzztest>
+    <!-- maximum length of a test input -->
+    <max_len>10</max_len>
+    <!-- maximum total time in seconds to run the fuzzer -->
+    <max_total_time>120</max_total_time>
+    <!-- memory usage limit in Mb -->
+    <rss_limit_mb>2048</rss_limit_mb>
+  </fuzztest>
+</fuzz_config>