diff options
Diffstat (limited to 'common/native/bpfutiljni/com_android_net_module_util_BpfUtils.cpp')
-rw-r--r-- | common/native/bpfutiljni/com_android_net_module_util_BpfUtils.cpp | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/common/native/bpfutiljni/com_android_net_module_util_BpfUtils.cpp b/common/native/bpfutiljni/com_android_net_module_util_BpfUtils.cpp deleted file mode 100644 index 0f2ebbd4..00000000 --- a/common/native/bpfutiljni/com_android_net_module_util_BpfUtils.cpp +++ /dev/null @@ -1,132 +0,0 @@ -/* - * Copyright (C) 2022 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 <android-base/unique_fd.h> -#include <errno.h> -#include <fcntl.h> -#include <jni.h> -#include <nativehelper/JNIHelp.h> -#include <nativehelper/ScopedLocalRef.h> -#include <nativehelper/scoped_utf_chars.h> -#include <string.h> -#include <sys/socket.h> - -#include "BpfSyscallWrappers.h" - -namespace android { - -using base::unique_fd; - -// If attach fails throw error and return false. -static jboolean com_android_net_module_util_BpfUtil_attachProgramToCgroup(JNIEnv *env, - jobject clazz, jint type, jstring bpfProgPath, jstring cgroupPath, jint flags) { - - ScopedUtfChars dirPath(env, cgroupPath); - unique_fd cg_fd(open(dirPath.c_str(), O_DIRECTORY | O_RDONLY | O_CLOEXEC)); - if (cg_fd == -1) { - jniThrowExceptionFmt(env, "java/io/IOException", - "Failed to open the cgroup directory %s: %s", - dirPath.c_str(), strerror(errno)); - return false; - } - - ScopedUtfChars bpfProg(env, bpfProgPath); - unique_fd bpf_fd(bpf::retrieveProgram(bpfProg.c_str())); - if (bpf_fd == -1) { - jniThrowExceptionFmt(env, "java/io/IOException", - "Failed to retrieve bpf program from %s: %s", - bpfProg.c_str(), strerror(errno)); - return false; - } - if (bpf::attachProgram((bpf_attach_type) type, bpf_fd, cg_fd, flags)) { - jniThrowExceptionFmt(env, "java/io/IOException", - "Failed to attach bpf program %s to %s: %s", - bpfProg.c_str(), dirPath.c_str(), strerror(errno)); - return false; - } - return true; -} - -// If detach fails throw error and return false. -static jboolean com_android_net_module_util_BpfUtil_detachProgramFromCgroup(JNIEnv *env, - jobject clazz, jint type, jstring cgroupPath) { - - ScopedUtfChars dirPath(env, cgroupPath); - unique_fd cg_fd(open(dirPath.c_str(), O_DIRECTORY | O_RDONLY | O_CLOEXEC)); - if (cg_fd == -1) { - jniThrowExceptionFmt(env, "java/io/IOException", - "Failed to open the cgroup directory %s: %s", - dirPath.c_str(), strerror(errno)); - return false; - } - - if (bpf::detachProgram((bpf_attach_type) type, cg_fd)) { - jniThrowExceptionFmt(env, "Failed to detach bpf program from %s: %s", - dirPath.c_str(), strerror(errno)); - return false; - } - return true; -} - -// If detach single program fails throw error and return false. -static jboolean com_android_net_module_util_BpfUtil_detachSingleProgramFromCgroup(JNIEnv *env, - jobject clazz, jint type, jstring bpfProgPath, jstring cgroupPath) { - - ScopedUtfChars dirPath(env, cgroupPath); - unique_fd cg_fd(open(dirPath.c_str(), O_DIRECTORY | O_RDONLY | O_CLOEXEC)); - if (cg_fd == -1) { - jniThrowExceptionFmt(env, "java/io/IOException", - "Failed to open the cgroup directory %s: %s", - dirPath.c_str(), strerror(errno)); - return false; - } - - ScopedUtfChars bpfProg(env, bpfProgPath); - unique_fd bpf_fd(bpf::retrieveProgram(bpfProg.c_str())); - if (bpf_fd == -1) { - jniThrowExceptionFmt(env, "java/io/IOException", - "Failed to retrieve bpf program from %s: %s", - bpfProg.c_str(), strerror(errno)); - return false; - } - if (bpf::detachSingleProgram((bpf_attach_type) type, bpf_fd, cg_fd)) { - jniThrowExceptionFmt(env, "Failed to detach bpf program %s from %s: %s", - bpfProg.c_str(), dirPath.c_str(), strerror(errno)); - return false; - } - return true; -} - -/* - * JNI registration. - */ -static const JNINativeMethod gMethods[] = { - /* name, signature, funcPtr */ - { "native_attachProgramToCgroup", "(ILjava/lang/String;Ljava/lang/String;I)Z", - (void*) com_android_net_module_util_BpfUtil_attachProgramToCgroup }, - { "native_detachProgramFromCgroup", "(ILjava/lang/String;)Z", - (void*) com_android_net_module_util_BpfUtil_detachProgramFromCgroup }, - { "native_detachSingleProgramFromCgroup", "(ILjava/lang/String;Ljava/lang/String;)Z", - (void*) com_android_net_module_util_BpfUtil_detachSingleProgramFromCgroup }, -}; - -int register_com_android_net_module_util_BpfUtils(JNIEnv* env, char const* class_name) { - return jniRegisterNativeMethods(env, - class_name, - gMethods, NELEM(gMethods)); -} - -}; // namespace android |