1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "incremental_manager-jni"
18
19 #include "core_jni_helpers.h"
20 #include "incfs_ndk.h"
21 #include "jni.h"
22 #include "nativehelper/JNIHelp.h"
23
24 #include <iterator>
25 #include <memory>
26
27 namespace android {
28
nativeIsEnabled(JNIEnv * env,jobject clazz)29 static jboolean nativeIsEnabled(JNIEnv* env, jobject clazz) {
30 return IncFs_IsEnabled();
31 }
32
nativeIsV2Available(JNIEnv * env,jobject clazz)33 static jboolean nativeIsV2Available(JNIEnv* env, jobject clazz) {
34 return !!(IncFs_Features() & INCFS_FEATURE_V2);
35 }
36
nativeIsIncrementalPath(JNIEnv * env,jobject clazz,jstring javaPath)37 static jboolean nativeIsIncrementalPath(JNIEnv* env,
38 jobject clazz,
39 jstring javaPath) {
40 ScopedUtfChars path(env, javaPath);
41 return (jboolean)IncFs_IsIncFsPath(path.c_str());
42 }
43
nativeIsIncrementalFd(JNIEnv * env,jobject clazz,jint fd)44 static jboolean nativeIsIncrementalFd(JNIEnv* env, jobject clazz, jint fd) {
45 return (jboolean)IncFs_IsIncFsFd(fd);
46 }
47
nativeUnsafeGetFileSignature(JNIEnv * env,jobject clazz,jstring javaPath)48 static jbyteArray nativeUnsafeGetFileSignature(JNIEnv* env, jobject clazz, jstring javaPath) {
49 ScopedUtfChars path(env, javaPath);
50
51 char signature[INCFS_MAX_SIGNATURE_SIZE];
52 size_t size = sizeof(signature);
53 if (IncFs_UnsafeGetSignatureByPath(path.c_str(), signature, &size) < 0) {
54 return nullptr;
55 }
56
57 jbyteArray result = env->NewByteArray(size);
58 if (result != nullptr) {
59 env->SetByteArrayRegion(result, 0, size, (const jbyte*)signature);
60 }
61 return result;
62 }
63
64 static const JNINativeMethod method_table[] =
65 {{"nativeIsEnabled", "()Z", (void*)nativeIsEnabled},
66 {"nativeIsV2Available", "()Z", (void*)nativeIsV2Available},
67 {"nativeIsIncrementalPath", "(Ljava/lang/String;)Z", (void*)nativeIsIncrementalPath},
68 {"nativeIsIncrementalFd", "(I)Z", (void*)nativeIsIncrementalFd},
69 {"nativeUnsafeGetFileSignature", "(Ljava/lang/String;)[B",
70 (void*)nativeUnsafeGetFileSignature}};
71
register_android_os_incremental_IncrementalManager(JNIEnv * env)72 int register_android_os_incremental_IncrementalManager(JNIEnv* env) {
73 return jniRegisterNativeMethods(env, "android/os/incremental/IncrementalManager",
74 method_table, std::size(method_table));
75 }
76
77 } // namespace android
78