/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <nativehelper/ScopedUtfChars.h>
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#include "jni.h"
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#include "core_jni_helpers.h"
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namespace android {
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static jint com_android_internal_os_AtomicDirectory_getDirectoryFd(JNIEnv* env,
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jobject /*clazz*/, jstring path) {
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ScopedUtfChars path8(env, path);
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if (path8.c_str() == NULL) {
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ALOGE("Invalid path: %s", path8.c_str());
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return -1;
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}
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int fd;
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if ((fd = TEMP_FAILURE_RETRY(open(path8.c_str(), O_DIRECTORY | O_RDONLY | O_CLOEXEC))) == -1) {
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ALOGE("Cannot open directory %s, error: %s\n", path8.c_str(), strerror(errno));
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return -1;
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}
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return fd;
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}
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static void com_android_internal_os_AtomicDirectory_fsyncDirectoryFd(JNIEnv* env,
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jobject /*clazz*/, jint fd) {
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if (TEMP_FAILURE_RETRY(fsync(fd)) == -1) {
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ALOGE("Cannot fsync directory %d, error: %s\n", fd, strerror(errno));
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}
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}
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/*
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* JNI registration.
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*/
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static const JNINativeMethod gRegisterMethods[] = {
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/* name, signature, funcPtr */
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{ "fsyncDirectoryFd",
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"(I)V",
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(void*) com_android_internal_os_AtomicDirectory_fsyncDirectoryFd
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},
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{ "getDirectoryFd",
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"(Ljava/lang/String;)I",
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(void*) com_android_internal_os_AtomicDirectory_getDirectoryFd
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},
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};
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int register_com_android_internal_os_AtomicDirectory(JNIEnv* env) {
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return RegisterMethodsOrDie(env, "com/android/internal/os/AtomicDirectory",
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gRegisterMethods, NELEM(gRegisterMethods));
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}
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}; // namespace android
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