| /* |
| * Copyright (C) 2011 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. |
| */ |
| |
| #define LOG_TAG "Linux" |
| |
| #include <arpa/inet.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <ifaddrs.h> |
| #include <linux/rtnetlink.h> |
| #include <net/if.h> |
| #include <netdb.h> |
| #include <netinet/in.h> |
| #include <netpacket/packet.h> |
| #include <poll.h> |
| #include <pwd.h> |
| #include <signal.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/capability.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/prctl.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <sys/un.h> |
| #include <sys/utsname.h> |
| #include <sys/wait.h> |
| #include <sys/xattr.h> |
| #include <termios.h> |
| #include <unistd.h> |
| |
| #include <memory> |
| |
| #if defined(__BIONIC__) |
| #include <android/fdsan.h> |
| #endif |
| |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/macros.h> |
| #include <android-base/strings.h> |
| #include <log/log.h> |
| #include <nativehelper/JNIPlatformHelp.h> |
| #include <nativehelper/ScopedLocalRef.h> |
| #include <nativehelper/ScopedPrimitiveArray.h> |
| #include <nativehelper/ScopedUtfChars.h> |
| #include <nativehelper/jni_macros.h> |
| #include <nativehelper/toStringArray.h> |
| |
| #include "AsynchronousCloseMonitor.h" |
| #include "ExecStrings.h" |
| #include "JniConstants.h" |
| #include "JniException.h" |
| #include "NetworkUtilities.h" |
| #include "Portability.h" |
| #include "ScopedBytes.h" |
| |
| #ifndef __unused |
| #define __unused __attribute__((__unused__)) |
| #endif |
| |
| #define TO_JAVA_STRING(NAME, EXP) \ |
| jstring NAME = env->NewStringUTF(EXP); \ |
| if ((NAME) == NULL) return NULL; |
| |
| namespace { |
| |
| jfieldID int32RefValueFid; |
| jfieldID int64RefValueFid; |
| |
| } // namespace |
| |
| struct addrinfo_deleter { |
| void operator()(addrinfo* p) const { |
| if (p != NULL) { // bionic's freeaddrinfo(3) crashes when passed NULL. |
| freeaddrinfo(p); |
| } |
| } |
| }; |
| |
| struct c_deleter { |
| void operator()(void* p) const { |
| free(p); |
| } |
| }; |
| |
| static bool isIPv4MappedAddress(const sockaddr *sa) { |
| const sockaddr_in6 *sin6 = reinterpret_cast<const sockaddr_in6*>(sa); |
| return sa != NULL && sa->sa_family == AF_INET6 && |
| (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) || |
| IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)); // We map 0.0.0.0 to ::, so :: is mapped. |
| } |
| |
| /** |
| * Perform a socket operation that specifies an IP address, possibly falling back from specifying |
| * the address as an IPv4-mapped IPv6 address in a struct sockaddr_in6 to specifying it as an IPv4 |
| * address in a struct sockaddr_in. |
| * |
| * This is needed because all sockets created by the java.net APIs are IPv6 sockets, and on those |
| * sockets, IPv4 operations use IPv4-mapped addresses stored in a struct sockaddr_in6. But sockets |
| * created using Linux.socket(AF_INET, ...) are IPv4 sockets and only support operations using IPv4 |
| * socket addresses structures. |
| */ |
| #define NET_IPV4_FALLBACK(jni_env, return_type, syscall_name, java_fd, java_addr, port, null_addr_ok, args...) ({ \ |
| return_type _rc = -1; \ |
| do { \ |
| sockaddr_storage _ss; \ |
| socklen_t _salen; \ |
| if ((java_addr) == NULL && (null_addr_ok)) { \ |
| /* No IP address specified (e.g., sendto() on a connected socket). */ \ |
| _salen = 0; \ |
| } else if (!inetAddressToSockaddr(jni_env, java_addr, port, _ss, _salen)) { \ |
| /* Invalid socket address, return -1. inetAddressToSockaddr has already thrown. */ \ |
| break; \ |
| } \ |
| sockaddr* _sa = _salen ? reinterpret_cast<sockaddr*>(&_ss) : NULL; \ |
| /* inetAddressToSockaddr always returns an IPv6 sockaddr. Assume that java_fd was created \ |
| * by Java API calls, which always create IPv6 socket fds, and pass it in as is. */ \ |
| _rc = NET_FAILURE_RETRY(jni_env, return_type, syscall_name, java_fd, ##args, _sa, _salen); \ |
| if (_rc == -1 && errno == EAFNOSUPPORT && _salen && isIPv4MappedAddress(_sa)) { \ |
| /* We passed in an IPv4 address in an IPv6 sockaddr and the kernel told us that we got \ |
| * the address family wrong. Pass in the same address in an IPv4 sockaddr. */ \ |
| (jni_env)->ExceptionClear(); \ |
| if (!inetAddressToSockaddrVerbatim(jni_env, java_addr, port, _ss, _salen)) { \ |
| break; \ |
| } \ |
| _sa = reinterpret_cast<sockaddr*>(&_ss); \ |
| _rc = NET_FAILURE_RETRY(jni_env, return_type, syscall_name, java_fd, ##args, _sa, _salen); \ |
| } \ |
| } while (0); \ |
| _rc; }) \ |
| |
| /** |
| * Used to retry networking system calls that can be interrupted with a signal. Unlike |
| * TEMP_FAILURE_RETRY, this also handles the case where |
| * AsynchronousCloseMonitor::signalBlockedThreads(fd) is used to signal a close() or |
| * Thread.interrupt(). Other signals that result in an EINTR result are ignored and the system call |
| * is retried. |
| * |
| * Returns the result of the system call though a Java exception will be pending if the result is |
| * -1: a SocketException if signaled via AsynchronousCloseMonitor, or ErrnoException for other |
| * failures. |
| */ |
| #define NET_FAILURE_RETRY(jni_env, return_type, syscall_name, java_fd, ...) ({ \ |
| return_type _rc = -1; \ |
| int _syscallErrno; \ |
| do { \ |
| bool _wasSignaled; \ |
| { \ |
| int _fd = jniGetFDFromFileDescriptor(jni_env, java_fd); \ |
| AsynchronousCloseMonitor _monitor(_fd); \ |
| _rc = syscall_name(_fd, __VA_ARGS__); \ |
| _syscallErrno = errno; \ |
| _wasSignaled = _monitor.wasSignaled(); \ |
| } \ |
| if (_wasSignaled) { \ |
| jniThrowException(jni_env, "java/net/SocketException", "Socket closed"); \ |
| _rc = -1; \ |
| break; \ |
| } \ |
| if (_rc == -1 && _syscallErrno != EINTR) { \ |
| /* TODO: with a format string we could show the arguments too, like strace(1). */ \ |
| throwErrnoException(jni_env, # syscall_name); \ |
| break; \ |
| } \ |
| } while (_rc == -1); /* _syscallErrno == EINTR && !_wasSignaled */ \ |
| if (_rc == -1) { \ |
| /* If the syscall failed, re-set errno: throwing an exception might have modified it. */ \ |
| errno = _syscallErrno; \ |
| } \ |
| _rc; }) |
| |
| /** |
| * Used to retry system calls that can be interrupted with a signal. Unlike TEMP_FAILURE_RETRY, this |
| * also handles the case where AsynchronousCloseMonitor::signalBlockedThreads(fd) is used to signal |
| * a close() or Thread.interrupt(). Other signals that result in an EINTR result are ignored and the |
| * system call is retried. |
| * |
| * Returns the result of the system call though a Java exception will be pending if the result is |
| * -1: an IOException if the file descriptor is already closed, a InterruptedIOException if signaled |
| * via AsynchronousCloseMonitor, or ErrnoException for other failures. |
| */ |
| #define IO_FAILURE_RETRY(jni_env, return_type, syscall_name, java_fd, ...) ({ \ |
| return_type _rc = -1; \ |
| int _syscallErrno; \ |
| do { \ |
| bool _wasSignaled; \ |
| { \ |
| int _fd = jniGetFDFromFileDescriptor(jni_env, java_fd); \ |
| AsynchronousCloseMonitor _monitor(_fd); \ |
| _rc = syscall_name(_fd, __VA_ARGS__); \ |
| _syscallErrno = errno; \ |
| _wasSignaled = _monitor.wasSignaled(); \ |
| } \ |
| if (_wasSignaled) { \ |
| jniThrowException(jni_env, "java/io/InterruptedIOException", # syscall_name " interrupted"); \ |
| _rc = -1; \ |
| break; \ |
| } \ |
| if (_rc == -1 && _syscallErrno != EINTR) { \ |
| /* TODO: with a format string we could show the arguments too, like strace(1). */ \ |
| throwErrnoException(jni_env, # syscall_name); \ |
| break; \ |
| } \ |
| } while (_rc == -1); /* && _syscallErrno == EINTR && !_wasSignaled */ \ |
| if (_rc == -1) { \ |
| /* If the syscall failed, re-set errno: throwing an exception might have modified it. */ \ |
| errno = _syscallErrno; \ |
| } \ |
| _rc; }) |
| |
| #define NULL_ADDR_OK true |
| #define NULL_ADDR_FORBIDDEN false |
| |
| static void throwException(JNIEnv* env, jclass exceptionClass, jmethodID ctor3, jmethodID ctor2, |
| const char* functionName, int error) { |
| jthrowable cause = NULL; |
| if (env->ExceptionCheck()) { |
| cause = env->ExceptionOccurred(); |
| env->ExceptionClear(); |
| } |
| |
| ScopedLocalRef<jstring> detailMessage(env, env->NewStringUTF(functionName)); |
| if (detailMessage.get() == NULL) { |
| // Not really much we can do here. We're probably dead in the water, |
| // but let's try to stumble on... |
| env->ExceptionClear(); |
| } |
| |
| jobject exception; |
| if (cause != NULL) { |
| exception = env->NewObject(exceptionClass, ctor3, detailMessage.get(), error, cause); |
| } else { |
| exception = env->NewObject(exceptionClass, ctor2, detailMessage.get(), error); |
| } |
| env->Throw(reinterpret_cast<jthrowable>(exception)); |
| } |
| |
| static void throwErrnoException(JNIEnv* env, const char* functionName) { |
| int error = errno; |
| jclass errnoExceptionClass = JniConstants::GetErrnoExceptionClass(env); |
| static jmethodID ctor3 = env->GetMethodID(errnoExceptionClass, |
| "<init>", "(Ljava/lang/String;ILjava/lang/Throwable;)V"); |
| static jmethodID ctor2 = env->GetMethodID(errnoExceptionClass, |
| "<init>", "(Ljava/lang/String;I)V"); |
| throwException(env, errnoExceptionClass, ctor3, ctor2, functionName, error); |
| } |
| |
| static void throwGaiException(JNIEnv* env, const char* functionName, int error) { |
| jclass gaiExceptionClass = JniConstants::GetGaiExceptionClass(env); |
| // Cache the methods ids before we throw, so we don't call GetMethodID with a pending exception. |
| static jmethodID ctor3 = env->GetMethodID(gaiExceptionClass, "<init>", |
| "(Ljava/lang/String;ILjava/lang/Throwable;)V"); |
| static jmethodID ctor2 = env->GetMethodID(gaiExceptionClass, "<init>", |
| "(Ljava/lang/String;I)V"); |
| if (errno != 0) { |
| // EAI_SYSTEM should mean "look at errno instead", but both glibc and bionic seem to |
| // mess this up. In particular, if you don't have INTERNET permission, errno will be EACCES |
| // but you'll get EAI_NONAME or EAI_NODATA. So we want our GaiException to have a |
| // potentially-relevant ErrnoException as its cause even if error != EAI_SYSTEM. |
| // http://code.google.com/p/android/issues/detail?id=15722 |
| throwErrnoException(env, functionName); |
| // Deliberately fall through to throw another exception... |
| } |
| throwException(env, gaiExceptionClass, ctor3, ctor2, functionName, error); |
| } |
| |
| template <typename rc_t> |
| static rc_t throwIfMinusOne(JNIEnv* env, const char* name, rc_t rc) { |
| if (rc == rc_t(-1)) { |
| throwErrnoException(env, name); |
| } |
| return rc; |
| } |
| |
| template <typename ScopedT> |
| class IoVec { |
| public: |
| IoVec(JNIEnv* env, size_t bufferCount) : mEnv(env), mBufferCount(bufferCount) { |
| } |
| |
| bool init(jobjectArray javaBuffers, jintArray javaOffsets, jintArray javaByteCounts) { |
| // We can't delete our local references until after the I/O, so make sure we have room. |
| if (mEnv->PushLocalFrame(mBufferCount + 16) < 0) { |
| return false; |
| } |
| ScopedIntArrayRO offsets(mEnv, javaOffsets); |
| if (offsets.get() == NULL) { |
| return false; |
| } |
| ScopedIntArrayRO byteCounts(mEnv, javaByteCounts); |
| if (byteCounts.get() == NULL) { |
| return false; |
| } |
| // TODO: Linux actually has a 1024 buffer limit. glibc works around this, and we should too. |
| // TODO: you can query the limit at runtime with sysconf(_SC_IOV_MAX). |
| for (size_t i = 0; i < mBufferCount; ++i) { |
| jobject buffer = mEnv->GetObjectArrayElement(javaBuffers, i); // We keep this local ref. |
| mScopedBuffers.push_back(new ScopedT(mEnv, buffer)); |
| jbyte* ptr = const_cast<jbyte*>(mScopedBuffers.back()->get()); |
| if (ptr == NULL) { |
| return false; |
| } |
| struct iovec iov; |
| iov.iov_base = reinterpret_cast<void*>(ptr + offsets[i]); |
| iov.iov_len = byteCounts[i]; |
| mIoVec.push_back(iov); |
| } |
| return true; |
| } |
| |
| ~IoVec() { |
| for (size_t i = 0; i < mScopedBuffers.size(); ++i) { |
| delete mScopedBuffers[i]; |
| } |
| mEnv->PopLocalFrame(NULL); |
| } |
| |
| iovec* get() { |
| return &mIoVec[0]; |
| } |
| |
| size_t size() { |
| return mBufferCount; |
| } |
| |
| private: |
| JNIEnv* mEnv; |
| size_t mBufferCount; |
| std::vector<iovec> mIoVec; |
| std::vector<ScopedT*> mScopedBuffers; |
| }; |
| |
| static jobject createFileDescriptorIfOpen(JNIEnv* env, int fd) { |
| if (fd == -1) { |
| return NULL; |
| } |
| jobject jifd = jniCreateFileDescriptor(env, fd); |
| if (jifd == NULL) { |
| // OOME prevented allocation of j.i.FileDescriptor instance, close fd to avoid leak. |
| close(fd); |
| } |
| return jifd; |
| } |
| |
| /** |
| * Returns a jbyteArray containing the sockaddr_un.sun_path from ss. As per unix(7) sa_len should be |
| * the length of ss as returned by getsockname(2), getpeername(2), or accept(2). |
| * If the returned array is of length 0 the sockaddr_un refers to an unnamed socket. |
| * A null pointer is returned in the event of an error. See unix(7) for more information. |
| */ |
| static jbyteArray getUnixSocketPath(JNIEnv* env, const sockaddr_storage& ss, |
| const socklen_t& sa_len) { |
| if (ss.ss_family != AF_UNIX) { |
| jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| "getUnixSocketPath unsupported ss_family: %i", ss.ss_family); |
| return NULL; |
| } |
| |
| const struct sockaddr_un* un_addr = reinterpret_cast<const struct sockaddr_un*>(&ss); |
| // The length of sun_path is sa_len minus the length of the overhead (ss_family). |
| // See unix(7) for details. This calculation must match that of socket_make_sockaddr_un() in |
| // socket_local_client.c and javaUnixSocketAddressToSockaddr() to interoperate. |
| size_t pathLength = sa_len - offsetof(struct sockaddr_un, sun_path); |
| |
| jbyteArray javaSunPath = env->NewByteArray(pathLength); |
| if (javaSunPath == NULL) { |
| return NULL; |
| } |
| |
| if (pathLength > 0) { |
| env->SetByteArrayRegion(javaSunPath, 0, pathLength, |
| reinterpret_cast<const jbyte*>(&un_addr->sun_path)); |
| } |
| return javaSunPath; |
| } |
| |
| static jobject makeSocketAddress(JNIEnv* env, const sockaddr_storage& ss, const socklen_t sa_len) { |
| if (ss.ss_family == AF_INET || ss.ss_family == AF_INET6) { |
| jint port; |
| jobject inetAddress = sockaddrToInetAddress(env, ss, &port); |
| if (inetAddress == NULL) { |
| return NULL; // Exception already thrown. |
| } |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetInetSocketAddressClass(env), |
| "<init>", "(Ljava/net/InetAddress;I)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetInetSocketAddressClass(env), ctor, inetAddress, port); |
| } else if (ss.ss_family == AF_UNIX) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetUnixSocketAddressClass(env), |
| "<init>", "([B)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| jbyteArray javaSunPath = getUnixSocketPath(env, ss, sa_len); |
| if (!javaSunPath) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetUnixSocketAddressClass(env), ctor, javaSunPath); |
| } else if (ss.ss_family == AF_NETLINK) { |
| const struct sockaddr_nl* nl_addr = reinterpret_cast<const struct sockaddr_nl*>(&ss); |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetNetlinkSocketAddressClass(env), |
| "<init>", "(II)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetNetlinkSocketAddressClass(env), ctor, |
| static_cast<jint>(nl_addr->nl_pid), |
| static_cast<jint>(nl_addr->nl_groups)); |
| } else if (ss.ss_family == AF_PACKET) { |
| const struct sockaddr_ll* sll = reinterpret_cast<const struct sockaddr_ll*>(&ss); |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetPacketSocketAddressClass(env), |
| "<init>", "(IIII[B)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| ScopedLocalRef<jbyteArray> byteArray(env, env->NewByteArray(sll->sll_halen)); |
| if (byteArray.get() == NULL) { |
| return NULL; |
| } |
| env->SetByteArrayRegion(byteArray.get(), 0, sll->sll_halen, |
| reinterpret_cast<const jbyte*>(sll->sll_addr)); |
| jobject packetSocketAddress = env->NewObject(JniConstants::GetPacketSocketAddressClass(env), ctor, |
| static_cast<jint>(ntohs(sll->sll_protocol)), |
| static_cast<jint>(sll->sll_ifindex), |
| static_cast<jint>(sll->sll_hatype), |
| static_cast<jint>(sll->sll_pkttype), |
| byteArray.get()); |
| return packetSocketAddress; |
| } |
| jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", "unsupported ss_family: %d", |
| ss.ss_family); |
| return NULL; |
| } |
| |
| static jobject makeStructPasswd(JNIEnv* env, const struct passwd& pw) { |
| TO_JAVA_STRING(pw_name, pw.pw_name); |
| TO_JAVA_STRING(pw_dir, pw.pw_dir); |
| TO_JAVA_STRING(pw_shell, pw.pw_shell); |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructPasswdClass(env), "<init>", |
| "(Ljava/lang/String;IILjava/lang/String;Ljava/lang/String;)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetStructPasswdClass(env), ctor, |
| pw_name, static_cast<jint>(pw.pw_uid), static_cast<jint>(pw.pw_gid), pw_dir, pw_shell); |
| } |
| |
| static jobject makeStructTimespec(JNIEnv* env, const struct timespec& ts) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructTimespecClass(env), "<init>", |
| "(JJ)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetStructTimespecClass(env), ctor, |
| static_cast<jlong>(ts.tv_sec), static_cast<jlong>(ts.tv_nsec)); |
| } |
| |
| static jobject makeStructStat(JNIEnv* env, const struct stat64& sb) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructStatClass(env), "<init>", |
| "(JJIJIIJJLandroid/system/StructTimespec;Landroid/system/StructTimespec;Landroid/system/StructTimespec;JJ)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| |
| jobject atim_timespec = makeStructTimespec(env, sb.st_atim); |
| if (atim_timespec == NULL) { |
| return NULL; |
| } |
| jobject mtim_timespec = makeStructTimespec(env, sb.st_mtim); |
| if (mtim_timespec == NULL) { |
| return NULL; |
| } |
| jobject ctim_timespec = makeStructTimespec(env, sb.st_ctim); |
| if (ctim_timespec == NULL) { |
| return NULL; |
| } |
| |
| return env->NewObject(JniConstants::GetStructStatClass(env), ctor, |
| static_cast<jlong>(sb.st_dev), static_cast<jlong>(sb.st_ino), |
| static_cast<jint>(sb.st_mode), static_cast<jlong>(sb.st_nlink), |
| static_cast<jint>(sb.st_uid), static_cast<jint>(sb.st_gid), |
| static_cast<jlong>(sb.st_rdev), static_cast<jlong>(sb.st_size), |
| atim_timespec, mtim_timespec, ctim_timespec, |
| static_cast<jlong>(sb.st_blksize), static_cast<jlong>(sb.st_blocks)); |
| } |
| |
| static jobject makeStructStatVfs(JNIEnv* env, const struct statvfs& sb) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructStatVfsClass(env), "<init>", |
| "(JJJJJJJJJJJ)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| |
| return env->NewObject(JniConstants::GetStructStatVfsClass(env), ctor, |
| static_cast<jlong>(sb.f_bsize), |
| static_cast<jlong>(sb.f_frsize), |
| static_cast<jlong>(sb.f_blocks), |
| static_cast<jlong>(sb.f_bfree), |
| static_cast<jlong>(sb.f_bavail), |
| static_cast<jlong>(sb.f_files), |
| static_cast<jlong>(sb.f_ffree), |
| static_cast<jlong>(sb.f_favail), |
| static_cast<jlong>(sb.f_fsid), |
| static_cast<jlong>(sb.f_flag), |
| static_cast<jlong>(sb.f_namemax)); |
| } |
| |
| static jobject makeStructLinger(JNIEnv* env, const struct linger& l) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructLingerClass(env), "<init>", "(II)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetStructLingerClass(env), ctor, l.l_onoff, l.l_linger); |
| } |
| |
| static jobject makeStructTimeval(JNIEnv* env, const struct timeval& tv) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructTimevalClass(env), "<init>", "(JJ)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetStructTimevalClass(env), ctor, |
| static_cast<jlong>(tv.tv_sec), static_cast<jlong>(tv.tv_usec)); |
| } |
| |
| static jobject makeStructUcred(JNIEnv* env, const struct ucred& u __unused) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructUcredClass(env), "<init>", "(III)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetStructUcredClass(env), ctor, u.pid, u.uid, u.gid); |
| } |
| |
| static jobject makeStructUtsname(JNIEnv* env, const struct utsname& buf) { |
| TO_JAVA_STRING(sysname, buf.sysname); |
| TO_JAVA_STRING(nodename, buf.nodename); |
| TO_JAVA_STRING(release, buf.release); |
| TO_JAVA_STRING(version, buf.version); |
| TO_JAVA_STRING(machine, buf.machine); |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructUtsnameClass(env), "<init>", |
| "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(JniConstants::GetStructUtsnameClass(env), ctor, |
| sysname, nodename, release, version, machine); |
| }; |
| |
| static bool fillIfreq(JNIEnv* env, jstring javaInterfaceName, struct ifreq& req) { |
| ScopedUtfChars interfaceName(env, javaInterfaceName); |
| if (interfaceName.c_str() == NULL) { |
| return false; |
| } |
| memset(&req, 0, sizeof(req)); |
| strncpy(req.ifr_name, interfaceName.c_str(), sizeof(req.ifr_name)); |
| req.ifr_name[sizeof(req.ifr_name) - 1] = '\0'; |
| return true; |
| } |
| |
| static bool fillUnixSocketAddress(JNIEnv* env, jobject javaUnixSocketAddress, |
| const sockaddr_storage& ss, const socklen_t& sa_len) { |
| if (javaUnixSocketAddress == NULL) { |
| return true; |
| } |
| jbyteArray javaSunPath = getUnixSocketPath(env, ss, sa_len); |
| if (!javaSunPath) { |
| return false; |
| } |
| |
| static jfieldID sunPathFid = |
| env->GetFieldID(JniConstants::GetUnixSocketAddressClass(env), "sun_path", "[B"); |
| env->SetObjectField(javaUnixSocketAddress, sunPathFid, javaSunPath); |
| return true; |
| } |
| |
| static bool fillInetSocketAddress(JNIEnv* env, jobject javaInetSocketAddress, |
| const sockaddr_storage& ss) { |
| if (javaInetSocketAddress == NULL) { |
| return true; |
| } |
| // Fill out the passed-in InetSocketAddress with the sender's IP address and port number. |
| jint port; |
| jobject sender = sockaddrToInetAddress(env, ss, &port); |
| if (sender == NULL) { |
| return false; |
| } |
| static jfieldID holderFid = env->GetFieldID(JniConstants::GetInetSocketAddressClass(env), "holder", |
| "Ljava/net/InetSocketAddress$InetSocketAddressHolder;"); |
| jobject holder = env->GetObjectField(javaInetSocketAddress, holderFid); |
| |
| static jfieldID addressFid = env->GetFieldID(JniConstants::GetInetSocketAddressHolderClass(env), |
| "addr", "Ljava/net/InetAddress;"); |
| static jfieldID portFid = env->GetFieldID(JniConstants::GetInetSocketAddressHolderClass(env), "port", "I"); |
| env->SetObjectField(holder, addressFid, sender); |
| env->SetIntField(holder, portFid, port); |
| return true; |
| } |
| |
| static bool fillSocketAddress(JNIEnv* env, jobject javaSocketAddress, const sockaddr_storage& ss, |
| const socklen_t& sa_len) { |
| if (javaSocketAddress == NULL) { |
| return true; |
| } |
| |
| if (env->IsInstanceOf(javaSocketAddress, JniConstants::GetInetSocketAddressClass(env))) { |
| return fillInetSocketAddress(env, javaSocketAddress, ss); |
| } else if (env->IsInstanceOf(javaSocketAddress, JniConstants::GetUnixSocketAddressClass(env))) { |
| return fillUnixSocketAddress(env, javaSocketAddress, ss, sa_len); |
| } |
| jniThrowException(env, "java/lang/UnsupportedOperationException", |
| "unsupported SocketAddress subclass"); |
| return false; |
| |
| } |
| |
| static void javaInetSocketAddressToInetAddressAndPort( |
| JNIEnv* env, jobject javaInetSocketAddress, jobject& javaInetAddress, jint& port) { |
| static jfieldID holderFid = env->GetFieldID(JniConstants::GetInetSocketAddressClass(env), "holder", |
| "Ljava/net/InetSocketAddress$InetSocketAddressHolder;"); |
| jobject holder = env->GetObjectField(javaInetSocketAddress, holderFid); |
| |
| static jfieldID addressFid = env->GetFieldID( |
| JniConstants::GetInetSocketAddressHolderClass(env), "addr", "Ljava/net/InetAddress;"); |
| static jfieldID portFid = env->GetFieldID(JniConstants::GetInetSocketAddressHolderClass(env), "port", "I"); |
| |
| javaInetAddress = env->GetObjectField(holder, addressFid); |
| port = env->GetIntField(holder, portFid); |
| } |
| |
| static bool javaInetSocketAddressToSockaddr( |
| JNIEnv* env, jobject javaSocketAddress, sockaddr_storage& ss, socklen_t& sa_len) { |
| jobject javaInetAddress; |
| jint port; |
| javaInetSocketAddressToInetAddressAndPort(env, javaSocketAddress, javaInetAddress, port); |
| return inetAddressToSockaddr(env, javaInetAddress, port, ss, sa_len); |
| } |
| |
| static bool javaNetlinkSocketAddressToSockaddr( |
| JNIEnv* env, jobject javaSocketAddress, sockaddr_storage& ss, socklen_t& sa_len) { |
| static jfieldID nlPidFid = env->GetFieldID( |
| JniConstants::GetNetlinkSocketAddressClass(env), "nlPortId", "I"); |
| static jfieldID nlGroupsFid = env->GetFieldID( |
| JniConstants::GetNetlinkSocketAddressClass(env), "nlGroupsMask", "I"); |
| |
| sockaddr_nl *nlAddr = reinterpret_cast<sockaddr_nl *>(&ss); |
| nlAddr->nl_family = AF_NETLINK; |
| nlAddr->nl_pid = env->GetIntField(javaSocketAddress, nlPidFid); |
| nlAddr->nl_groups = env->GetIntField(javaSocketAddress, nlGroupsFid); |
| sa_len = sizeof(sockaddr_nl); |
| return true; |
| } |
| |
| static bool javaUnixSocketAddressToSockaddr( |
| JNIEnv* env, jobject javaUnixSocketAddress, sockaddr_storage& ss, socklen_t& sa_len) { |
| static jfieldID sunPathFid = env->GetFieldID( |
| JniConstants::GetUnixSocketAddressClass(env), "sun_path", "[B"); |
| |
| struct sockaddr_un* un_addr = reinterpret_cast<struct sockaddr_un*>(&ss); |
| memset (un_addr, 0, sizeof(sockaddr_un)); |
| un_addr->sun_family = AF_UNIX; |
| |
| jbyteArray javaSunPath = (jbyteArray) env->GetObjectField(javaUnixSocketAddress, sunPathFid); |
| jsize pathLength = env->GetArrayLength(javaSunPath); |
| if ((size_t) pathLength > sizeof(sockaddr_un::sun_path)) { |
| jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| "sun_path too long: max=%i, is=%i", |
| sizeof(sockaddr_un::sun_path), pathLength); |
| return false; |
| } |
| env->GetByteArrayRegion(javaSunPath, 0, pathLength, (jbyte*) un_addr->sun_path); |
| // sa_len is sun_path plus the length of the overhead (ss_family_t). See unix(7) for |
| // details. This calculation must match that of socket_make_sockaddr_un() in |
| // socket_local_client.c and getUnixSocketPath() to interoperate. |
| sa_len = offsetof(struct sockaddr_un, sun_path) + pathLength; |
| return true; |
| } |
| |
| static bool javaPacketSocketAddressToSockaddr( |
| JNIEnv* env, jobject javaSocketAddress, sockaddr_storage& ss, socklen_t& sa_len) { |
| static jfieldID protocolFid = env->GetFieldID( |
| JniConstants::GetPacketSocketAddressClass(env), "sll_protocol", "I"); |
| static jfieldID ifindexFid = env->GetFieldID( |
| JniConstants::GetPacketSocketAddressClass(env), "sll_ifindex", "I"); |
| static jfieldID hatypeFid = env->GetFieldID( |
| JniConstants::GetPacketSocketAddressClass(env), "sll_hatype", "I"); |
| static jfieldID pkttypeFid = env->GetFieldID( |
| JniConstants::GetPacketSocketAddressClass(env), "sll_pkttype", "I"); |
| static jfieldID addrFid = env->GetFieldID( |
| JniConstants::GetPacketSocketAddressClass(env), "sll_addr", "[B"); |
| |
| sockaddr_ll *sll = reinterpret_cast<sockaddr_ll *>(&ss); |
| sll->sll_family = AF_PACKET; |
| sll->sll_protocol = htons(env->GetIntField(javaSocketAddress, protocolFid)); |
| sll->sll_ifindex = env->GetIntField(javaSocketAddress, ifindexFid); |
| sll->sll_hatype = env->GetIntField(javaSocketAddress, hatypeFid); |
| sll->sll_pkttype = env->GetIntField(javaSocketAddress, pkttypeFid); |
| |
| jbyteArray sllAddr = (jbyteArray) env->GetObjectField(javaSocketAddress, addrFid); |
| if (sllAddr == NULL) { |
| sll->sll_halen = 0; |
| memset(&sll->sll_addr, 0, sizeof(sll->sll_addr)); |
| } else { |
| jsize len = env->GetArrayLength(sllAddr); |
| if ((size_t) len > sizeof(sll->sll_addr)) { |
| len = sizeof(sll->sll_addr); |
| } |
| sll->sll_halen = len; |
| env->GetByteArrayRegion(sllAddr, 0, len, (jbyte*) sll->sll_addr); |
| } |
| sa_len = sizeof(sockaddr_ll); |
| return true; |
| } |
| |
| static bool javaSocketAddressToSockaddr( |
| JNIEnv* env, jobject javaSocketAddress, sockaddr_storage& ss, socklen_t& sa_len) { |
| if (javaSocketAddress == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return false; |
| } |
| |
| if (env->IsInstanceOf(javaSocketAddress, JniConstants::GetNetlinkSocketAddressClass(env))) { |
| return javaNetlinkSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len); |
| } else if (env->IsInstanceOf(javaSocketAddress, JniConstants::GetInetSocketAddressClass(env))) { |
| return javaInetSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len); |
| } else if (env->IsInstanceOf(javaSocketAddress, JniConstants::GetPacketSocketAddressClass(env))) { |
| return javaPacketSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len); |
| } else if (env->IsInstanceOf(javaSocketAddress, JniConstants::GetUnixSocketAddressClass(env))) { |
| return javaUnixSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len); |
| } |
| jniThrowException(env, "java/lang/UnsupportedOperationException", |
| "unsupported SocketAddress subclass"); |
| return false; |
| } |
| |
| static jobject doStat(JNIEnv* env, jstring javaPath, bool isLstat) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| struct stat64 sb; |
| int rc = isLstat ? TEMP_FAILURE_RETRY(lstat64(path.c_str(), &sb)) |
| : TEMP_FAILURE_RETRY(stat64(path.c_str(), &sb)); |
| if (rc == -1) { |
| throwErrnoException(env, isLstat ? "lstat" : "stat"); |
| return NULL; |
| } |
| return makeStructStat(env, sb); |
| } |
| |
| static jobject doGetSockName(JNIEnv* env, jobject javaFd, bool is_sockname) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| sockaddr_storage ss; |
| sockaddr* sa = reinterpret_cast<sockaddr*>(&ss); |
| socklen_t byteCount = sizeof(ss); |
| memset(&ss, 0, byteCount); |
| int rc = is_sockname ? TEMP_FAILURE_RETRY(getsockname(fd, sa, &byteCount)) |
| : TEMP_FAILURE_RETRY(getpeername(fd, sa, &byteCount)); |
| if (rc == -1) { |
| throwErrnoException(env, is_sockname ? "getsockname" : "getpeername"); |
| return NULL; |
| } |
| return makeSocketAddress(env, ss, byteCount); |
| } |
| |
| class Passwd { |
| public: |
| explicit Passwd(JNIEnv* env) : mEnv(env), mResult(NULL) { |
| mBufferSize = sysconf(_SC_GETPW_R_SIZE_MAX); |
| mBuffer.reset(new char[mBufferSize]); |
| } |
| |
| jobject getpwnam(const char* name) { |
| return process("getpwnam_r", getpwnam_r(name, &mPwd, mBuffer.get(), mBufferSize, &mResult)); |
| } |
| |
| jobject getpwuid(uid_t uid) { |
| return process("getpwuid_r", getpwuid_r(uid, &mPwd, mBuffer.get(), mBufferSize, &mResult)); |
| } |
| |
| struct passwd* get() { |
| return mResult; |
| } |
| |
| private: |
| jobject process(const char* syscall, int error) { |
| if (mResult == NULL) { |
| errno = error; |
| throwErrnoException(mEnv, syscall); |
| return NULL; |
| } |
| return makeStructPasswd(mEnv, *mResult); |
| } |
| |
| JNIEnv* mEnv; |
| std::unique_ptr<char[]> mBuffer; |
| size_t mBufferSize; |
| struct passwd mPwd; |
| struct passwd* mResult; |
| }; |
| |
| static void AssertException(JNIEnv* env) { |
| if (env->ExceptionCheck() == JNI_FALSE) { |
| env->FatalError("Expected exception"); |
| } |
| } |
| |
| // Note for capabilities functions: |
| // We assume the calls are rare enough that it does not make sense to cache class objects. The |
| // advantage is lower maintenance burden. |
| |
| static bool ReadStructCapUserHeader( |
| JNIEnv* env, jobject java_header, __user_cap_header_struct* c_header) { |
| if (java_header == nullptr) { |
| jniThrowNullPointerException(env, "header is null"); |
| return false; |
| } |
| |
| ScopedLocalRef<jclass> header_class(env, env->FindClass("android/system/StructCapUserHeader")); |
| if (header_class.get() == nullptr) { |
| return false; |
| } |
| |
| { |
| static jfieldID version_fid = env->GetFieldID(header_class.get(), "version", "I"); |
| if (version_fid == nullptr) { |
| return false; |
| } |
| c_header->version = env->GetIntField(java_header, version_fid); |
| } |
| |
| { |
| static jfieldID pid_fid = env->GetFieldID(header_class.get(), "pid", "I"); |
| if (pid_fid == nullptr) { |
| return false; |
| } |
| c_header->pid = env->GetIntField(java_header, pid_fid); |
| } |
| |
| return true; |
| } |
| |
| static void SetStructCapUserHeaderVersion( |
| JNIEnv* env, jobject java_header, __user_cap_header_struct* c_header) { |
| ScopedLocalRef<jclass> header_class(env, env->FindClass("android/system/StructCapUserHeader")); |
| if (header_class.get() == nullptr) { |
| env->ExceptionClear(); |
| return; |
| } |
| |
| static jfieldID version_fid = env->GetFieldID(header_class.get(), "version", "I"); |
| if (version_fid == nullptr) { |
| env->ExceptionClear(); |
| return; |
| } |
| env->SetIntField(java_header, version_fid, c_header->version); |
| } |
| |
| static jobject CreateStructCapUserData( |
| JNIEnv* env, jclass data_class, __user_cap_data_struct* c_data) { |
| if (c_data == nullptr) { |
| // Should not happen. |
| jniThrowNullPointerException(env, "data is null"); |
| return nullptr; |
| } |
| |
| static jmethodID data_cons = env->GetMethodID(data_class, "<init>", "(III)V"); |
| if (data_cons == nullptr) { |
| return nullptr; |
| } |
| |
| jint e = static_cast<jint>(c_data->effective); |
| jint p = static_cast<jint>(c_data->permitted); |
| jint i = static_cast<jint>(c_data->inheritable); |
| return env->NewObject(data_class, data_cons, e, p, i); |
| } |
| |
| static bool ReadStructCapUserData(JNIEnv* env, jobject java_data, __user_cap_data_struct* c_data) { |
| if (java_data == nullptr) { |
| jniThrowNullPointerException(env, "data is null"); |
| return false; |
| } |
| |
| ScopedLocalRef<jclass> data_class(env, env->FindClass("android/system/StructCapUserData")); |
| if (data_class.get() == nullptr) { |
| return false; |
| } |
| |
| { |
| static jfieldID effective_fid = env->GetFieldID(data_class.get(), "effective", "I"); |
| if (effective_fid == nullptr) { |
| return false; |
| } |
| c_data->effective = env->GetIntField(java_data, effective_fid); |
| } |
| |
| { |
| static jfieldID permitted_fid = env->GetFieldID(data_class.get(), "permitted", "I"); |
| if (permitted_fid == nullptr) { |
| return false; |
| } |
| c_data->permitted = env->GetIntField(java_data, permitted_fid); |
| } |
| |
| |
| { |
| static jfieldID inheritable_fid = env->GetFieldID(data_class.get(), "inheritable", "I"); |
| if (inheritable_fid == nullptr) { |
| return false; |
| } |
| c_data->inheritable = env->GetIntField(java_data, inheritable_fid); |
| } |
| |
| return true; |
| } |
| |
| static constexpr size_t kMaxCapUserDataLength = 2U; |
| #ifdef _LINUX_CAPABILITY_VERSION_1 |
| static_assert(kMaxCapUserDataLength >= _LINUX_CAPABILITY_U32S_1, "Length too small."); |
| #endif |
| #ifdef _LINUX_CAPABILITY_VERSION_2 |
| static_assert(kMaxCapUserDataLength >= _LINUX_CAPABILITY_U32S_2, "Length too small."); |
| #endif |
| #ifdef _LINUX_CAPABILITY_VERSION_3 |
| static_assert(kMaxCapUserDataLength >= _LINUX_CAPABILITY_U32S_3, "Length too small."); |
| #endif |
| #ifdef _LINUX_CAPABILITY_VERSION_4 |
| static_assert(false, "Unsupported capability version, please update."); |
| #endif |
| |
| static size_t GetCapUserDataLength(uint32_t version) { |
| #ifdef _LINUX_CAPABILITY_VERSION_1 |
| if (version == _LINUX_CAPABILITY_VERSION_1) { |
| return _LINUX_CAPABILITY_U32S_1; |
| } |
| #endif |
| #ifdef _LINUX_CAPABILITY_VERSION_2 |
| if (version == _LINUX_CAPABILITY_VERSION_2) { |
| return _LINUX_CAPABILITY_U32S_2; |
| } |
| #endif |
| #ifdef _LINUX_CAPABILITY_VERSION_3 |
| if (version == _LINUX_CAPABILITY_VERSION_3) { |
| return _LINUX_CAPABILITY_U32S_3; |
| } |
| #endif |
| return 0; |
| } |
| |
| static jobject Linux_accept(JNIEnv* env, jobject, jobject javaFd, jobject javaSocketAddress) { |
| sockaddr_storage ss; |
| socklen_t sl = sizeof(ss); |
| memset(&ss, 0, sizeof(ss)); |
| sockaddr* peer = (javaSocketAddress != NULL) ? reinterpret_cast<sockaddr*>(&ss) : NULL; |
| socklen_t* peerLength = (javaSocketAddress != NULL) ? &sl : 0; |
| jint clientFd = NET_FAILURE_RETRY(env, int, accept, javaFd, peer, peerLength); |
| if (clientFd == -1 || !fillSocketAddress(env, javaSocketAddress, ss, *peerLength)) { |
| close(clientFd); |
| return NULL; |
| } |
| return createFileDescriptorIfOpen(env, clientFd); |
| } |
| |
| static jboolean Linux_access(JNIEnv* env, jobject, jstring javaPath, jint mode) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return JNI_FALSE; |
| } |
| int rc = TEMP_FAILURE_RETRY(access(path.c_str(), mode)); |
| if (rc == -1) { |
| throwErrnoException(env, "access"); |
| } |
| return (rc == 0); |
| } |
| |
| static void Linux_bind(JNIEnv* env, jobject, jobject javaFd, jobject javaAddress, jint port) { |
| // We don't need the return value because we'll already have thrown. |
| (void) NET_IPV4_FALLBACK(env, int, bind, javaFd, javaAddress, port, NULL_ADDR_FORBIDDEN); |
| } |
| |
| static void Linux_bindSocketAddress( |
| JNIEnv* env, jobject thisObj, jobject javaFd, jobject javaSocketAddress) { |
| if (javaSocketAddress != NULL && |
| env->IsInstanceOf(javaSocketAddress, JniConstants::GetInetSocketAddressClass(env))) { |
| // Use the InetAddress version so we get the benefit of NET_IPV4_FALLBACK. |
| jobject javaInetAddress; |
| jint port; |
| javaInetSocketAddressToInetAddressAndPort(env, javaSocketAddress, javaInetAddress, port); |
| Linux_bind(env, thisObj, javaFd, javaInetAddress, port); |
| return; |
| } |
| sockaddr_storage ss; |
| socklen_t sa_len; |
| if (!javaSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len)) { |
| return; // Exception already thrown. |
| } |
| |
| const sockaddr* sa = reinterpret_cast<const sockaddr*>(&ss); |
| // We don't need the return value because we'll already have thrown. |
| (void) NET_FAILURE_RETRY(env, int, bind, javaFd, sa, sa_len); |
| } |
| |
| static jobjectArray Linux_capget(JNIEnv* env, jobject, jobject header) { |
| // Convert Java header struct to kernel datastructure. |
| __user_cap_header_struct cap_header; |
| if (!ReadStructCapUserHeader(env, header, &cap_header)) { |
| AssertException(env); |
| return nullptr; |
| } |
| |
| // Call capget. |
| __user_cap_data_struct cap_data[kMaxCapUserDataLength]; |
| if (capget(&cap_header, &cap_data[0]) == -1) { |
| // Check for EINVAL. In that case, mutate the header. |
| if (errno == EINVAL) { |
| int saved_errno = errno; |
| SetStructCapUserHeaderVersion(env, header, &cap_header); |
| errno = saved_errno; |
| } |
| throwErrnoException(env, "capget"); |
| return nullptr; |
| } |
| |
| // Create the result array. |
| ScopedLocalRef<jclass> data_class(env, env->FindClass("android/system/StructCapUserData")); |
| if (data_class.get() == nullptr) { |
| return nullptr; |
| } |
| size_t result_size = GetCapUserDataLength(cap_header.version); |
| ScopedLocalRef<jobjectArray> result( |
| env, env->NewObjectArray(result_size, data_class.get(), nullptr)); |
| if (result.get() == nullptr) { |
| return nullptr; |
| } |
| // Translate the values we got. |
| for (size_t i = 0; i < result_size; ++i) { |
| ScopedLocalRef<jobject> value( |
| env, CreateStructCapUserData(env, data_class.get(), &cap_data[i])); |
| if (value.get() == nullptr) { |
| AssertException(env); |
| return nullptr; |
| } |
| env->SetObjectArrayElement(result.get(), i, value.get()); |
| } |
| return result.release(); |
| } |
| |
| static void Linux_capset( |
| JNIEnv* env, jobject, jobject header, jobjectArray data) { |
| // Convert Java header struct to kernel datastructure. |
| __user_cap_header_struct cap_header; |
| if (!ReadStructCapUserHeader(env, header, &cap_header)) { |
| AssertException(env); |
| return; |
| } |
| size_t result_size = GetCapUserDataLength(cap_header.version); |
| // Ensure that the array has the expected length. |
| if (env->GetArrayLength(data) != static_cast<jint>(result_size)) { |
| jniThrowExceptionFmt(env, |
| "java/lang/IllegalArgumentException", |
| "Unsupported input length %d (expected %zu)", |
| env->GetArrayLength(data), |
| result_size); |
| return; |
| } |
| |
| __user_cap_data_struct cap_data[kMaxCapUserDataLength]; |
| // Translate the values we got. |
| for (size_t i = 0; i < result_size; ++i) { |
| ScopedLocalRef<jobject> value(env, env->GetObjectArrayElement(data, i)); |
| if (!ReadStructCapUserData(env, value.get(), &cap_data[i])) { |
| AssertException(env); |
| return; |
| } |
| } |
| |
| throwIfMinusOne(env, "capset", capset(&cap_header, &cap_data[0])); |
| } |
| |
| static void Linux_chmod(JNIEnv* env, jobject, jstring javaPath, jint mode) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "chmod", TEMP_FAILURE_RETRY(chmod(path.c_str(), mode))); |
| } |
| |
| static void Linux_chown(JNIEnv* env, jobject, jstring javaPath, jint uid, jint gid) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "chown", TEMP_FAILURE_RETRY(chown(path.c_str(), uid, gid))); |
| } |
| |
| static void Linux_close(JNIEnv* env, jobject, jobject javaFd) { |
| // Get the FileDescriptor's 'fd' field and clear it. |
| // We need to do this before we can throw an IOException (http://b/3222087). |
| if (javaFd == nullptr) { |
| jniThrowNullPointerException(env, "null fd"); |
| return; |
| } |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| jniSetFileDescriptorOfFD(env, javaFd, -1); |
| |
| #if defined(__BIONIC__) |
| static jmethodID getOwnerId = env->GetMethodID(JniConstants::GetFileDescriptorClass(env), |
| "getOwnerId$", "()J"); |
| jlong ownerId = env->CallLongMethod(javaFd, getOwnerId); |
| |
| // Close with bionic's fd ownership tracking (which returns 0 in the case of EINTR). |
| throwIfMinusOne(env, "close", android_fdsan_close_with_tag(fd, ownerId)); |
| #else |
| // Even if close(2) fails with EINTR, the fd will have been closed. |
| // Using TEMP_FAILURE_RETRY will either lead to EBADF or closing someone else's fd. |
| // http://lkml.indiana.edu/hypermail/linux/kernel/0509.1/0877.html |
| throwIfMinusOne(env, "close", close(fd)); |
| #endif |
| } |
| |
| static void Linux_android_fdsan_exchange_owner_tag(JNIEnv* env, jclass, |
| jobject javaFd, |
| jlong expectedOwnerId, |
| jlong newOwnerId) { |
| #if defined(__BIONIC__) |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| android_fdsan_exchange_owner_tag(fd, expectedOwnerId, newOwnerId); |
| #else |
| UNUSED(env, javaFd, expectedOwnerId, newOwnerId); |
| #endif |
| } |
| |
| static jlong Linux_android_fdsan_get_owner_tag(JNIEnv* env, jclass, jobject javaFd) { |
| #if defined(__BIONIC__) |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| return android_fdsan_get_owner_tag(fd); |
| #else |
| UNUSED(env, javaFd); |
| return 0; |
| #endif |
| } |
| |
| static jstring Linux_android_fdsan_get_tag_type(JNIEnv* env, jclass, jlong tag) { |
| #if defined(__BIONIC__) |
| return env->NewStringUTF(android_fdsan_get_tag_type(tag)); |
| #else |
| UNUSED(tag); |
| return env->NewStringUTF("unknown"); |
| #endif |
| } |
| |
| static jlong Linux_android_fdsan_get_tag_value(JNIEnv* env, jclass, jlong tag) { |
| #if defined(__BIONIC__) |
| UNUSED(env); |
| return android_fdsan_get_tag_value(tag); |
| #else |
| UNUSED(env, tag); |
| return 0; |
| #endif |
| } |
| |
| static void Linux_connect(JNIEnv* env, jobject, jobject javaFd, jobject javaAddress, jint port) { |
| (void) NET_IPV4_FALLBACK(env, int, connect, javaFd, javaAddress, port, NULL_ADDR_FORBIDDEN); |
| } |
| |
| static void Linux_connectSocketAddress( |
| JNIEnv* env, jobject thisObj, jobject javaFd, jobject javaSocketAddress) { |
| if (javaSocketAddress != NULL && |
| env->IsInstanceOf(javaSocketAddress, JniConstants::GetInetSocketAddressClass(env))) { |
| // Use the InetAddress version so we get the benefit of NET_IPV4_FALLBACK. |
| jobject javaInetAddress; |
| jint port; |
| javaInetSocketAddressToInetAddressAndPort(env, javaSocketAddress, javaInetAddress, port); |
| Linux_connect(env, thisObj, javaFd, javaInetAddress, port); |
| return; |
| } |
| sockaddr_storage ss; |
| socklen_t sa_len; |
| if (!javaSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len)) { |
| return; // Exception already thrown. |
| } |
| |
| const sockaddr* sa = reinterpret_cast<const sockaddr*>(&ss); |
| // We don't need the return value because we'll already have thrown. |
| (void) NET_FAILURE_RETRY(env, int, connect, javaFd, sa, sa_len); |
| } |
| |
| static jobject Linux_dup(JNIEnv* env, jobject, jobject javaOldFd) { |
| int oldFd = jniGetFDFromFileDescriptor(env, javaOldFd); |
| int newFd = throwIfMinusOne(env, "dup", TEMP_FAILURE_RETRY(dup(oldFd))); |
| return createFileDescriptorIfOpen(env, newFd); |
| } |
| |
| static jobject Linux_dup2(JNIEnv* env, jobject, jobject javaOldFd, jint newFd) { |
| int oldFd = jniGetFDFromFileDescriptor(env, javaOldFd); |
| int fd = throwIfMinusOne(env, "dup2", TEMP_FAILURE_RETRY(dup2(oldFd, newFd))); |
| return createFileDescriptorIfOpen(env, fd); |
| } |
| |
| static jobjectArray Linux_environ(JNIEnv* env, jobject) { |
| extern char** environ; // Standard, but not in any header file. |
| return toStringArray(env, environ); |
| } |
| |
| static void Linux_execve(JNIEnv* env, jobject, jstring javaFilename, jobjectArray javaArgv, jobjectArray javaEnvp) { |
| ScopedUtfChars path(env, javaFilename); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| |
| ExecStrings argv(env, javaArgv); |
| ExecStrings envp(env, javaEnvp); |
| TEMP_FAILURE_RETRY(execve(path.c_str(), argv.get(), envp.get())); |
| |
| throwErrnoException(env, "execve"); |
| } |
| |
| static void Linux_execv(JNIEnv* env, jobject, jstring javaFilename, jobjectArray javaArgv) { |
| ScopedUtfChars path(env, javaFilename); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| |
| ExecStrings argv(env, javaArgv); |
| TEMP_FAILURE_RETRY(execv(path.c_str(), argv.get())); |
| |
| throwErrnoException(env, "execv"); |
| } |
| |
| static void Linux_fchmod(JNIEnv* env, jobject, jobject javaFd, jint mode) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "fchmod", TEMP_FAILURE_RETRY(fchmod(fd, mode))); |
| } |
| |
| static void Linux_fchown(JNIEnv* env, jobject, jobject javaFd, jint uid, jint gid) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "fchown", TEMP_FAILURE_RETRY(fchown(fd, uid, gid))); |
| } |
| |
| static jint Linux_fcntlInt(JNIEnv* env, jobject, jobject javaFd, jint cmd, jint arg) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| return throwIfMinusOne(env, "fcntl", TEMP_FAILURE_RETRY(fcntl(fd, cmd, arg))); |
| } |
| |
| static jint Linux_fcntlVoid(JNIEnv* env, jobject, jobject javaFd, jint cmd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| return throwIfMinusOne(env, "fcntl", TEMP_FAILURE_RETRY(fcntl(fd, cmd))); |
| } |
| |
| static void Linux_fdatasync(JNIEnv* env, jobject, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "fdatasync", TEMP_FAILURE_RETRY(fdatasync(fd))); |
| } |
| |
| static jobject Linux_fstat(JNIEnv* env, jobject, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct stat64 sb; |
| int rc = TEMP_FAILURE_RETRY(fstat64(fd, &sb)); |
| if (rc == -1) { |
| throwErrnoException(env, "fstat"); |
| return NULL; |
| } |
| return makeStructStat(env, sb); |
| } |
| |
| static jobject Linux_fstatvfs(JNIEnv* env, jobject, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct statvfs sb; |
| int rc = TEMP_FAILURE_RETRY(fstatvfs(fd, &sb)); |
| if (rc == -1) { |
| throwErrnoException(env, "fstatvfs"); |
| return NULL; |
| } |
| return makeStructStatVfs(env, sb); |
| } |
| |
| static void Linux_fsync(JNIEnv* env, jobject, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "fsync", TEMP_FAILURE_RETRY(fsync(fd))); |
| } |
| |
| static void Linux_ftruncate(JNIEnv* env, jobject, jobject javaFd, jlong length) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "ftruncate", TEMP_FAILURE_RETRY(ftruncate64(fd, length))); |
| } |
| |
| static jstring Linux_gai_strerror(JNIEnv* env, jobject, jint error) { |
| return env->NewStringUTF(gai_strerror(error)); |
| } |
| |
| static jobjectArray Linux_android_getaddrinfo(JNIEnv* env, jobject, jstring javaNode, |
| jobject javaHints, jint netId) { |
| ScopedUtfChars node(env, javaNode); |
| if (node.c_str() == NULL) { |
| return NULL; |
| } |
| |
| static jfieldID flagsFid = env->GetFieldID(JniConstants::GetStructAddrinfoClass(env), "ai_flags", "I"); |
| static jfieldID familyFid = env->GetFieldID(JniConstants::GetStructAddrinfoClass(env), "ai_family", "I"); |
| static jfieldID socktypeFid = env->GetFieldID(JniConstants::GetStructAddrinfoClass(env), "ai_socktype", "I"); |
| static jfieldID protocolFid = env->GetFieldID(JniConstants::GetStructAddrinfoClass(env), "ai_protocol", "I"); |
| |
| addrinfo hints; |
| memset(&hints, 0, sizeof(hints)); |
| hints.ai_flags = env->GetIntField(javaHints, flagsFid); |
| hints.ai_family = env->GetIntField(javaHints, familyFid); |
| hints.ai_socktype = env->GetIntField(javaHints, socktypeFid); |
| hints.ai_protocol = env->GetIntField(javaHints, protocolFid); |
| |
| addrinfo* addressList = NULL; |
| errno = 0; |
| int rc = android_getaddrinfofornet(node.c_str(), NULL, &hints, netId, 0, &addressList); |
| std::unique_ptr<addrinfo, addrinfo_deleter> addressListDeleter(addressList); |
| if (rc != 0) { |
| throwGaiException(env, "android_getaddrinfo", rc); |
| return NULL; |
| } |
| |
| // Count results so we know how to size the output array. |
| int addressCount = 0; |
| for (addrinfo* ai = addressList; ai != NULL; ai = ai->ai_next) { |
| if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) { |
| ++addressCount; |
| } else { |
| ALOGE("android_getaddrinfo unexpected ai_family %i", ai->ai_family); |
| } |
| } |
| if (addressCount == 0) { |
| return NULL; |
| } |
| |
| // Prepare output array. |
| jobjectArray result = env->NewObjectArray(addressCount, JniConstants::GetInetAddressClass(env), NULL); |
| if (result == NULL) { |
| return NULL; |
| } |
| |
| // Examine returned addresses one by one, save them in the output array. |
| int index = 0; |
| for (addrinfo* ai = addressList; ai != NULL; ai = ai->ai_next) { |
| if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6) { |
| // Unknown address family. Skip this address. |
| ALOGE("android_getaddrinfo unexpected ai_family %i", ai->ai_family); |
| continue; |
| } |
| |
| // Convert each IP address into a Java byte array. |
| sockaddr_storage& address = *reinterpret_cast<sockaddr_storage*>(ai->ai_addr); |
| ScopedLocalRef<jobject> inetAddress(env, sockaddrToInetAddress(env, address, NULL)); |
| if (inetAddress.get() == NULL) { |
| return NULL; |
| } |
| env->SetObjectArrayElement(result, index, inetAddress.get()); |
| ++index; |
| } |
| return result; |
| } |
| |
| static jint Linux_getegid(JNIEnv*, jobject) { |
| return getegid(); |
| } |
| |
| static jint Linux_geteuid(JNIEnv*, jobject) { |
| return geteuid(); |
| } |
| |
| static jint Linux_getgid(JNIEnv*, jobject) { |
| return getgid(); |
| } |
| |
| static jstring Linux_getenv(JNIEnv* env, jobject, jstring javaName) { |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return NULL; |
| } |
| return env->NewStringUTF(getenv(name.c_str())); |
| } |
| |
| static jstring Linux_getnameinfo(JNIEnv* env, jobject, jobject javaAddress, jint flags) { |
| sockaddr_storage ss; |
| socklen_t sa_len; |
| if (!inetAddressToSockaddrVerbatim(env, javaAddress, 0, ss, sa_len)) { |
| return NULL; |
| } |
| char buf[NI_MAXHOST]; // NI_MAXHOST is longer than INET6_ADDRSTRLEN. |
| errno = 0; |
| int rc = getnameinfo(reinterpret_cast<sockaddr*>(&ss), sa_len, buf, sizeof(buf), NULL, 0, flags); |
| if (rc != 0) { |
| throwGaiException(env, "getnameinfo", rc); |
| return NULL; |
| } |
| return env->NewStringUTF(buf); |
| } |
| |
| static jobject Linux_getpeername(JNIEnv* env, jobject, jobject javaFd) { |
| return doGetSockName(env, javaFd, false); |
| } |
| |
| static jint Linux_getpgid(JNIEnv* env, jobject, jint pid) { |
| return throwIfMinusOne(env, "getpgid", TEMP_FAILURE_RETRY(getpgid(pid))); |
| } |
| |
| static jint Linux_getpid(JNIEnv*, jobject) { |
| return TEMP_FAILURE_RETRY(getpid()); |
| } |
| |
| static jint Linux_getppid(JNIEnv*, jobject) { |
| return TEMP_FAILURE_RETRY(getppid()); |
| } |
| |
| static jobject Linux_getpwnam(JNIEnv* env, jobject, jstring javaName) { |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return NULL; |
| } |
| return Passwd(env).getpwnam(name.c_str()); |
| } |
| |
| static jobject Linux_getpwuid(JNIEnv* env, jobject, jint uid) { |
| return Passwd(env).getpwuid(uid); |
| } |
| |
| static jobject Linux_getrlimit(JNIEnv* env, jobject, jint resource) { |
| struct rlimit r; |
| if (throwIfMinusOne(env, "getrlimit", TEMP_FAILURE_RETRY(getrlimit(resource, &r))) == -1) { |
| return nullptr; |
| } |
| |
| ScopedLocalRef<jclass> rlimit_class(env, env->FindClass("android/system/StructRlimit")); |
| jmethodID ctor = env->GetMethodID(rlimit_class.get(), "<init>", "(JJ)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| return env->NewObject(rlimit_class.get(), ctor, |
| static_cast<jlong>(r.rlim_cur), |
| static_cast<jlong>(r.rlim_max)); |
| } |
| |
| static jobject Linux_getsockname(JNIEnv* env, jobject, jobject javaFd) { |
| return doGetSockName(env, javaFd, true); |
| } |
| |
| static jint Linux_getsockoptByte(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| u_char result = 0; |
| socklen_t size = sizeof(result); |
| throwIfMinusOne(env, "getsockopt", TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &result, &size))); |
| return result; |
| } |
| |
| static jobject Linux_getsockoptInAddr(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| sockaddr_storage ss; |
| memset(&ss, 0, sizeof(ss)); |
| ss.ss_family = AF_INET; // This is only for the IPv4-only IP_MULTICAST_IF. |
| sockaddr_in* sa = reinterpret_cast<sockaddr_in*>(&ss); |
| socklen_t size = sizeof(sa->sin_addr); |
| int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &sa->sin_addr, &size)); |
| if (rc == -1) { |
| throwErrnoException(env, "getsockopt"); |
| return NULL; |
| } |
| return sockaddrToInetAddress(env, ss, NULL); |
| } |
| |
| static jint Linux_getsockoptInt(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| jint result = 0; |
| socklen_t size = sizeof(result); |
| throwIfMinusOne(env, "getsockopt", TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &result, &size))); |
| return result; |
| } |
| |
| static jobject Linux_getsockoptLinger(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct linger l; |
| socklen_t size = sizeof(l); |
| memset(&l, 0, size); |
| int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &l, &size)); |
| if (rc == -1) { |
| throwErrnoException(env, "getsockopt"); |
| return NULL; |
| } |
| return makeStructLinger(env, l); |
| } |
| |
| static jobject Linux_getsockoptTimeval(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct timeval tv; |
| socklen_t size = sizeof(tv); |
| memset(&tv, 0, size); |
| int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &tv, &size)); |
| if (rc == -1) { |
| throwErrnoException(env, "getsockopt"); |
| return NULL; |
| } |
| // If we didn't get the buffer size we expected then error. If other structures are the same |
| // size as timeval we might not detect an issue and could return junk. |
| if (size != sizeof(tv)) { |
| jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| "getsockoptTimeval() unsupported with level %i and option %i", level, option); |
| return NULL; |
| } |
| return makeStructTimeval(env, tv); |
| } |
| |
| static jobject Linux_getsockoptUcred(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct ucred u; |
| socklen_t size = sizeof(u); |
| memset(&u, 0, size); |
| int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &u, &size)); |
| if (rc == -1) { |
| throwErrnoException(env, "getsockopt"); |
| return NULL; |
| } |
| return makeStructUcred(env, u); |
| } |
| |
| static jint Linux_gettid(JNIEnv* env __unused, jobject) { |
| #if defined(__BIONIC__) |
| return TEMP_FAILURE_RETRY(gettid()); |
| #else |
| return syscall(__NR_gettid); |
| #endif |
| } |
| |
| static jint Linux_getuid(JNIEnv*, jobject) { |
| return getuid(); |
| } |
| |
| static jbyteArray Linux_getxattr(JNIEnv* env, jobject, jstring javaPath, |
| jstring javaName) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return NULL; |
| } |
| |
| while (true) { |
| // Get the current size of the named extended attribute. |
| ssize_t valueLength; |
| if ((valueLength = getxattr(path.c_str(), name.c_str(), NULL, 0)) < 0) { |
| throwErrnoException(env, "getxattr"); |
| return NULL; |
| } |
| |
| // Create the actual byte array. |
| std::vector<char> buf(valueLength); |
| if ((valueLength = getxattr(path.c_str(), name.c_str(), buf.data(), valueLength)) < 0) { |
| if (errno == ERANGE) { |
| // The attribute value has changed since last getxattr call and buf no longer fits, |
| // try again. |
| continue; |
| } |
| throwErrnoException(env, "getxattr"); |
| return NULL; |
| } |
| jbyteArray array = env->NewByteArray(valueLength); |
| if (array == NULL) { |
| return NULL; |
| } |
| env->SetByteArrayRegion(array, 0, valueLength, reinterpret_cast<const jbyte*>(buf.data())); |
| return array; |
| } |
| } |
| |
| static jobjectArray Linux_getifaddrs(JNIEnv* env, jobject) { |
| static jmethodID ctor = env->GetMethodID(JniConstants::GetStructIfaddrsClass(env), "<init>", |
| "(Ljava/lang/String;ILjava/net/InetAddress;Ljava/net/InetAddress;Ljava/net/InetAddress;[B)V"); |
| if (ctor == NULL) { |
| return NULL; |
| } |
| |
| ifaddrs* ifaddr; |
| int rc = TEMP_FAILURE_RETRY(getifaddrs(&ifaddr)); |
| if (rc == -1) { |
| throwErrnoException(env, "getifaddrs"); |
| return NULL; |
| } |
| std::unique_ptr<ifaddrs, decltype(&freeifaddrs)> ifaddrPtr(ifaddr, freeifaddrs); |
| |
| // Count results so we know how to size the output array. |
| jint ifCount = 0; |
| for (ifaddrs* ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { |
| ++ifCount; |
| } |
| |
| // Prepare output array. |
| jobjectArray result = env->NewObjectArray(ifCount, JniConstants::GetStructIfaddrsClass(env), NULL); |
| if (result == NULL) { |
| return NULL; |
| } |
| |
| // Traverse the list and populate the output array. |
| int index = 0; |
| for (ifaddrs* ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next, ++index) { |
| TO_JAVA_STRING(name, ifa->ifa_name); |
| jint flags = ifa->ifa_flags; |
| sockaddr_storage* interfaceAddr = |
| reinterpret_cast<sockaddr_storage*>(ifa->ifa_addr); |
| sockaddr_storage* netmaskAddr = |
| reinterpret_cast<sockaddr_storage*>(ifa->ifa_netmask); |
| sockaddr_storage* broadAddr = |
| reinterpret_cast<sockaddr_storage*>(ifa->ifa_broadaddr); |
| |
| jobject addr, netmask, broad; |
| jbyteArray hwaddr = NULL; |
| if (interfaceAddr != NULL) { |
| switch (interfaceAddr->ss_family) { |
| case AF_INET: |
| case AF_INET6: |
| // IPv4 / IPv6. |
| // interfaceAddr and netmaskAddr are never null. |
| if ((addr = sockaddrToInetAddress(env, *interfaceAddr, NULL)) == NULL) { |
| return NULL; |
| } |
| if ((netmask = sockaddrToInetAddress(env, *netmaskAddr, NULL)) == NULL) { |
| return NULL; |
| } |
| if (broadAddr != NULL && (ifa->ifa_flags & IFF_BROADCAST)) { |
| if ((broad = sockaddrToInetAddress(env, *broadAddr, NULL)) == NULL) { |
| return NULL; |
| } |
| } else { |
| broad = NULL; |
| } |
| break; |
| case AF_PACKET: |
| // Raw Interface. |
| sockaddr_ll* sll = reinterpret_cast<sockaddr_ll*>(ifa->ifa_addr); |
| |
| bool allZero = true; |
| for (int i = 0; i < sll->sll_halen; ++i) { |
| if (sll->sll_addr[i] != 0) { |
| allZero = false; |
| break; |
| } |
| } |
| |
| if (!allZero) { |
| hwaddr = env->NewByteArray(sll->sll_halen); |
| if (hwaddr == NULL) { |
| return NULL; |
| } |
| env->SetByteArrayRegion(hwaddr, 0, sll->sll_halen, |
| reinterpret_cast<const jbyte*>(sll->sll_addr)); |
| } |
| addr = netmask = broad = NULL; |
| break; |
| } |
| } else { |
| // Preserve the entry even if the interface has no interface address. |
| // http://b/29243557/ |
| addr = netmask = broad = NULL; |
| } |
| |
| jobject o = env->NewObject(JniConstants::GetStructIfaddrsClass(env), ctor, name, flags, |
| addr, netmask, broad, hwaddr); |
| if (o == NULL) { |
| return NULL; |
| } |
| env->SetObjectArrayElement(result, index, o); |
| } |
| |
| return result; |
| } |
| |
| static jstring Linux_if_indextoname(JNIEnv* env, jobject, jint index) { |
| char buf[IF_NAMESIZE]; |
| char* name = if_indextoname(index, buf); |
| // if_indextoname(3) returns NULL on failure, which will come out of NewStringUTF unscathed. |
| // There's no useful information in errno, so we don't bother throwing. Callers can null-check. |
| return env->NewStringUTF(name); |
| } |
| |
| static jint Linux_if_nametoindex(JNIEnv* env, jobject, jstring name) { |
| ScopedUtfChars cname(env, name); |
| if (cname.c_str() == NULL) { |
| return 0; |
| } |
| |
| // There's no useful information in errno, so we don't bother throwing. Callers can zero-check. |
| return if_nametoindex(cname.c_str()); |
| } |
| |
| static jobject Linux_inet_pton(JNIEnv* env, jobject, jint family, jstring javaName) { |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return NULL; |
| } |
| sockaddr_storage ss; |
| memset(&ss, 0, sizeof(ss)); |
| void* dst; |
| if (family == AF_INET) { |
| dst = &reinterpret_cast<sockaddr_in*>(&ss)->sin_addr; |
| } else if (family == AF_INET6) { |
| dst = &reinterpret_cast<sockaddr_in6*>(&ss)->sin6_addr; |
| } else { |
| return NULL; |
| } |
| if (inet_pton(family, name.c_str(), dst) != 1) { |
| return NULL; |
| } |
| ss.ss_family = family; |
| return sockaddrToInetAddress(env, ss, NULL); |
| } |
| |
| static jint Linux_ioctlFlags(JNIEnv* env, jobject, jobject javaFd, jstring javaInterfaceName) { |
| struct ifreq req; |
| if (!fillIfreq(env, javaInterfaceName, req)) { |
| return 0; |
| } |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "ioctl", TEMP_FAILURE_RETRY(ioctl(fd, SIOCGIFFLAGS, &req))); |
| return req.ifr_flags; |
| } |
| |
| static jobject Linux_ioctlInetAddress(JNIEnv* env, jobject, jobject javaFd, jint cmd, jstring javaInterfaceName) { |
| struct ifreq req; |
| if (!fillIfreq(env, javaInterfaceName, req)) { |
| return NULL; |
| } |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| int rc = throwIfMinusOne(env, "ioctl", TEMP_FAILURE_RETRY(ioctl(fd, cmd, &req))); |
| if (rc == -1) { |
| return NULL; |
| } |
| return sockaddrToInetAddress(env, reinterpret_cast<sockaddr_storage&>(req.ifr_addr), NULL); |
| } |
| |
| static jint Linux_ioctlInt(JNIEnv* env, jobject, jobject javaFd, jint cmd, jobject javaArg) { |
| // This is complicated because ioctls may return their result by updating their argument |
| // or via their return value, so we need to support both. |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| jint arg = env->GetIntField(javaArg, int32RefValueFid); |
| int rc = throwIfMinusOne(env, "ioctl", TEMP_FAILURE_RETRY(ioctl(fd, cmd, &arg))); |
| if (!env->ExceptionCheck()) { |
| env->SetIntField(javaArg, int32RefValueFid, arg); |
| } |
| return rc; |
| } |
| |
| static jint Linux_ioctlMTU(JNIEnv* env, jobject, jobject javaFd, jstring javaInterfaceName) { |
| struct ifreq req; |
| if (!fillIfreq(env, javaInterfaceName, req)) { |
| return 0; |
| } |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "ioctl", TEMP_FAILURE_RETRY(ioctl(fd, SIOCGIFMTU, &req))); |
| return req.ifr_mtu; |
| } |
| |
| static jboolean Linux_isatty(JNIEnv* env, jobject, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| return TEMP_FAILURE_RETRY(isatty(fd)) == 1; |
| } |
| |
| static void Linux_kill(JNIEnv* env, jobject, jint pid, jint sig) { |
| throwIfMinusOne(env, "kill", TEMP_FAILURE_RETRY(kill(pid, sig))); |
| } |
| |
| static void Linux_lchown(JNIEnv* env, jobject, jstring javaPath, jint uid, jint gid) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "lchown", TEMP_FAILURE_RETRY(lchown(path.c_str(), uid, gid))); |
| } |
| |
| static void Linux_link(JNIEnv* env, jobject, jstring javaOldPath, jstring javaNewPath) { |
| ScopedUtfChars oldPath(env, javaOldPath); |
| if (oldPath.c_str() == NULL) { |
| return; |
| } |
| ScopedUtfChars newPath(env, javaNewPath); |
| if (newPath.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "link", TEMP_FAILURE_RETRY(link(oldPath.c_str(), newPath.c_str()))); |
| } |
| |
| static void Linux_listen(JNIEnv* env, jobject, jobject javaFd, jint backlog) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "listen", TEMP_FAILURE_RETRY(listen(fd, backlog))); |
| } |
| |
| static jobjectArray Linux_listxattr(JNIEnv* env, jobject, jstring javaPath) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| |
| while (true) { |
| // Get the current size of the named extended attribute. |
| ssize_t valueLength; |
| if ((valueLength = listxattr(path.c_str(), NULL, 0)) < 0) { |
| throwErrnoException(env, "listxattr"); |
| return NULL; |
| } |
| |
| // Create the actual byte array. |
| std::string buf(valueLength, '\0'); |
| if ((valueLength = listxattr(path.c_str(), &buf[0], valueLength)) < 0) { |
| if (errno == ERANGE) { |
| // The attribute value has changed since last listxattr call and buf no longer fits, |
| // try again. |
| continue; |
| } |
| throwErrnoException(env, "listxattr"); |
| return NULL; |
| } |
| |
| // Split the output by '\0'. |
| buf.resize(valueLength > 0 ? valueLength - 1 : 0); // Remove the trailing NULL character. |
| std::string delim("\0", 1); |
| auto xattrs = android::base::Split(buf, delim); |
| |
| return toStringArray(env, xattrs); |
| } |
| } |
| |
| static jlong Linux_lseek(JNIEnv* env, jobject, jobject javaFd, jlong offset, jint whence) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| return throwIfMinusOne(env, "lseek", TEMP_FAILURE_RETRY(lseek64(fd, offset, whence))); |
| } |
| |
| static jobject Linux_lstat(JNIEnv* env, jobject, jstring javaPath) { |
| return doStat(env, javaPath, true); |
| } |
| |
| static jobject Linux_memfd_create(JNIEnv* env, jobject, jstring javaName, jint flags) { |
| #if defined(__BIONIC__) |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return NULL; |
| } |
| |
| int fd = throwIfMinusOne(env, "memfd_create", memfd_create(name.c_str(), flags)); |
| return createFileDescriptorIfOpen(env, fd); |
| #else |
| UNUSED(env, javaName, flags); |
| return NULL; |
| #endif |
| } |
| |
| static void Linux_mincore(JNIEnv* env, jobject, jlong address, jlong byteCount, jbyteArray javaVector) { |
| ScopedByteArrayRW vector(env, javaVector); |
| if (vector.get() == NULL) { |
| return; |
| } |
| void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); |
| unsigned char* vec = reinterpret_cast<unsigned char*>(vector.get()); |
| throwIfMinusOne(env, "mincore", TEMP_FAILURE_RETRY(mincore(ptr, byteCount, vec))); |
| } |
| |
| static void Linux_mkdir(JNIEnv* env, jobject, jstring javaPath, jint mode) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "mkdir", TEMP_FAILURE_RETRY(mkdir(path.c_str(), mode))); |
| } |
| |
| static void Linux_mkfifo(JNIEnv* env, jobject, jstring javaPath, jint mode) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "mkfifo", TEMP_FAILURE_RETRY(mkfifo(path.c_str(), mode))); |
| } |
| |
| static void Linux_mlock(JNIEnv* env, jobject, jlong address, jlong byteCount) { |
| void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); |
| throwIfMinusOne(env, "mlock", TEMP_FAILURE_RETRY(mlock(ptr, byteCount))); |
| } |
| |
| static jlong Linux_mmap(JNIEnv* env, jobject, jlong address, jlong byteCount, jint prot, jint flags, jobject javaFd, jlong offset) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| void* suggestedPtr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); |
| void* ptr = mmap64(suggestedPtr, byteCount, prot, flags, fd, offset); |
| if (ptr == MAP_FAILED) { |
| throwErrnoException(env, "mmap"); |
| } |
| return static_cast<jlong>(reinterpret_cast<uintptr_t>(ptr)); |
| } |
| |
| static void Linux_msync(JNIEnv* env, jobject, jlong address, jlong byteCount, jint flags) { |
| void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); |
| throwIfMinusOne(env, "msync", TEMP_FAILURE_RETRY(msync(ptr, byteCount, flags))); |
| } |
| |
| static void Linux_munlock(JNIEnv* env, jobject, jlong address, jlong byteCount) { |
| void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); |
| throwIfMinusOne(env, "munlock", TEMP_FAILURE_RETRY(munlock(ptr, byteCount))); |
| } |
| |
| static void Linux_munmap(JNIEnv* env, jobject, jlong address, jlong byteCount) { |
| void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); |
| throwIfMinusOne(env, "munmap", TEMP_FAILURE_RETRY(munmap(ptr, byteCount))); |
| } |
| |
| static jobject Linux_open(JNIEnv* env, jobject, jstring javaPath, jint flags, jint mode) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| int fd = throwIfMinusOne(env, "open", TEMP_FAILURE_RETRY(open(path.c_str(), flags, mode))); |
| return createFileDescriptorIfOpen(env, fd); |
| } |
| |
| static jobjectArray Linux_pipe2(JNIEnv* env, jobject, jint flags __unused) { |
| int fds[2]; |
| int pipe2_result = throwIfMinusOne(env, "pipe2", TEMP_FAILURE_RETRY(pipe2(&fds[0], flags))); |
| if (pipe2_result == -1) { |
| return NULL; |
| } |
| jobjectArray result = env->NewObjectArray(2, JniConstants::GetFileDescriptorClass(env), NULL); |
| if (result == NULL) { |
| return NULL; |
| } |
| for (int i = 0; i < 2; ++i) { |
| ScopedLocalRef<jobject> fd(env, jniCreateFileDescriptor(env, fds[i])); |
| env->SetObjectArrayElement(result, i, fd.get()); |
| if (fd.get() == NULL || env->ExceptionCheck()) { |
| close(fds[0]); |
| close(fds[1]); |
| return NULL; |
| } |
| } |
| return result; |
| } |
| |
| static jint Linux_poll(JNIEnv* env, jobject, jobjectArray javaStructs, jint timeoutMs) { |
| static jfieldID fdFid = env->GetFieldID(JniConstants::GetStructPollfdClass(env), "fd", "Ljava/io/FileDescriptor;"); |
| static jfieldID eventsFid = env->GetFieldID(JniConstants::GetStructPollfdClass(env), "events", "S"); |
| static jfieldID reventsFid = env->GetFieldID(JniConstants::GetStructPollfdClass(env), "revents", "S"); |
| |
| // Turn the Java android.system.StructPollfd[] into a C++ struct pollfd[]. |
| size_t arrayLength = env->GetArrayLength(javaStructs); |
| std::unique_ptr<struct pollfd[]> fds(new struct pollfd[arrayLength]); |
| memset(fds.get(), 0, sizeof(struct pollfd) * arrayLength); |
| size_t count = 0; // Some trailing array elements may be irrelevant. (See below.) |
| for (size_t i = 0; i < arrayLength; ++i) { |
| ScopedLocalRef<jobject> javaStruct(env, env->GetObjectArrayElement(javaStructs, i)); |
| if (javaStruct.get() == NULL) { |
| break; // We allow trailing nulls in the array for caller convenience. |
| } |
| ScopedLocalRef<jobject> javaFd(env, env->GetObjectField(javaStruct.get(), fdFid)); |
| if (javaFd.get() == NULL) { |
| break; // We also allow callers to just clear the fd field (this is what Selector does). |
| } |
| fds[count].fd = jniGetFDFromFileDescriptor(env, javaFd.get()); |
| fds[count].events = env->GetShortField(javaStruct.get(), eventsFid); |
| ++count; |
| } |
| |
| std::vector<AsynchronousCloseMonitor*> monitors; |
| for (size_t i = 0; i < count; ++i) { |
| monitors.push_back(new AsynchronousCloseMonitor(fds[i].fd)); |
| } |
| |
| int rc; |
| while (true) { |
| timespec before; |
| clock_gettime(CLOCK_MONOTONIC, &before); |
| |
| rc = poll(fds.get(), count, timeoutMs); |
| if (rc >= 0 || errno != EINTR) { |
| break; |
| } |
| |
| // We got EINTR. Work out how much of the original timeout is still left. |
| if (timeoutMs > 0) { |
| timespec now; |
| clock_gettime(CLOCK_MONOTONIC, &now); |
| |
| timespec diff; |
| diff.tv_sec = now.tv_sec - before.tv_sec; |
| diff.tv_nsec = now.tv_nsec - before.tv_nsec; |
| if (diff.tv_nsec < 0) { |
| --diff.tv_sec; |
| diff.tv_nsec += 1000000000; |
| } |
| |
| jint diffMs = diff.tv_sec * 1000 + diff.tv_nsec / 1000000; |
| if (diffMs >= timeoutMs) { |
| rc = 0; // We have less than 1ms left anyway, so just time out. |
| break; |
| } |
| |
| timeoutMs -= diffMs; |
| } |
| } |
| |
| for (size_t i = 0; i < monitors.size(); ++i) { |
| delete monitors[i]; |
| } |
| if (rc == -1) { |
| throwErrnoException(env, "poll"); |
| return -1; |
| } |
| |
| // Update the revents fields in the Java android.system.StructPollfd[]. |
| for (size_t i = 0; i < count; ++i) { |
| ScopedLocalRef<jobject> javaStruct(env, env->GetObjectArrayElement(javaStructs, i)); |
| if (javaStruct.get() == NULL) { |
| return -1; |
| } |
| env->SetShortField(javaStruct.get(), reventsFid, fds[i].revents); |
| } |
| return rc; |
| } |
| |
| static void Linux_posix_fallocate(JNIEnv* env, jobject, jobject javaFd __unused, |
| jlong offset __unused, jlong length __unused) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| while ((errno = posix_fallocate64(fd, offset, length)) == EINTR) { |
| } |
| if (errno != 0) { |
| throwErrnoException(env, "posix_fallocate"); |
| } |
| } |
| |
| static jint Linux_prctl(JNIEnv* env, jobject, jint option __unused, jlong arg2 __unused, |
| jlong arg3 __unused, jlong arg4 __unused, jlong arg5 __unused) { |
| int result = TEMP_FAILURE_RETRY(prctl(static_cast<int>(option), |
| static_cast<unsigned long>(arg2), |
| static_cast<unsigned long>(arg3), |
| static_cast<unsigned long>(arg4), |
| static_cast<unsigned long>(arg5))); |
| return throwIfMinusOne(env, "prctl", result); |
| } |
| |
| static jint Linux_preadBytes(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount, jlong offset) { |
| ScopedBytesRW bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| return IO_FAILURE_RETRY(env, ssize_t, pread64, javaFd, bytes.get() + byteOffset, byteCount, offset); |
| } |
| |
| static jint Linux_pwriteBytes(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount, jlong offset) { |
| ScopedBytesRO bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| return IO_FAILURE_RETRY(env, ssize_t, pwrite64, javaFd, bytes.get() + byteOffset, byteCount, offset); |
| } |
| |
| static jint Linux_readBytes(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount) { |
| ScopedBytesRW bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| return IO_FAILURE_RETRY(env, ssize_t, read, javaFd, bytes.get() + byteOffset, byteCount); |
| } |
| |
| static jstring Linux_readlink(JNIEnv* env, jobject, jstring javaPath) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| |
| std::string result; |
| if (!android::base::Readlink(path.c_str(), &result)) { |
| throwErrnoException(env, "readlink"); |
| return NULL; |
| } |
| return env->NewStringUTF(result.c_str()); |
| } |
| |
| static jstring Linux_realpath(JNIEnv* env, jobject, jstring javaPath) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| |
| std::unique_ptr<char, c_deleter> real_path(realpath(path.c_str(), nullptr)); |
| if (real_path.get() == nullptr) { |
| throwErrnoException(env, "realpath"); |
| return NULL; |
| } |
| |
| return env->NewStringUTF(real_path.get()); |
| } |
| |
| static jint Linux_readv(JNIEnv* env, jobject, jobject javaFd, jobjectArray buffers, jintArray offsets, jintArray byteCounts) { |
| IoVec<ScopedBytesRW> ioVec(env, env->GetArrayLength(buffers)); |
| if (!ioVec.init(buffers, offsets, byteCounts)) { |
| return -1; |
| } |
| return IO_FAILURE_RETRY(env, ssize_t, readv, javaFd, ioVec.get(), ioVec.size()); |
| } |
| |
| static jint Linux_recvfromBytes(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount, jint flags, jobject javaInetSocketAddress) { |
| ScopedBytesRW bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| sockaddr_storage ss; |
| socklen_t sl = sizeof(ss); |
| memset(&ss, 0, sizeof(ss)); |
| sockaddr* from = (javaInetSocketAddress != NULL) ? reinterpret_cast<sockaddr*>(&ss) : NULL; |
| socklen_t* fromLength = (javaInetSocketAddress != NULL) ? &sl : 0; |
| jint recvCount = NET_FAILURE_RETRY(env, ssize_t, recvfrom, javaFd, bytes.get() + byteOffset, byteCount, flags, from, fromLength); |
| if (recvCount >= 0) { |
| // The socket may have performed orderly shutdown and recvCount would return 0 (see man 2 |
| // recvfrom), in which case ss.ss_family == AF_UNIX and fillInetSocketAddress would fail. |
| // Don't fill in the address if recvfrom didn't succeed. http://b/33483694 |
| if (ss.ss_family == AF_INET || ss.ss_family == AF_INET6) { |
| fillInetSocketAddress(env, javaInetSocketAddress, ss); |
| } |
| } |
| return recvCount; |
| } |
| |
| static void Linux_remove(JNIEnv* env, jobject, jstring javaPath) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "remove", TEMP_FAILURE_RETRY(remove(path.c_str()))); |
| } |
| |
| static void Linux_removexattr(JNIEnv* env, jobject, jstring javaPath, jstring javaName) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return; |
| } |
| |
| int res = removexattr(path.c_str(), name.c_str()); |
| if (res < 0) { |
| throwErrnoException(env, "removexattr"); |
| } |
| } |
| |
| static void Linux_rename(JNIEnv* env, jobject, jstring javaOldPath, jstring javaNewPath) { |
| ScopedUtfChars oldPath(env, javaOldPath); |
| if (oldPath.c_str() == NULL) { |
| return; |
| } |
| ScopedUtfChars newPath(env, javaNewPath); |
| if (newPath.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "rename", TEMP_FAILURE_RETRY(rename(oldPath.c_str(), newPath.c_str()))); |
| } |
| |
| static jlong Linux_sendfile(JNIEnv* env, jobject, jobject javaOutFd, jobject javaInFd, jobject javaOffset, jlong byteCount) { |
| int outFd = jniGetFDFromFileDescriptor(env, javaOutFd); |
| int inFd = jniGetFDFromFileDescriptor(env, javaInFd); |
| off_t offset = 0; |
| off_t* offsetPtr = NULL; |
| if (javaOffset != NULL) { |
| // TODO: fix bionic so we can have a 64-bit off_t! |
| offset = env->GetLongField(javaOffset, int64RefValueFid); |
| offsetPtr = &offset; |
| } |
| jlong result = throwIfMinusOne(env, "sendfile", TEMP_FAILURE_RETRY(sendfile(outFd, inFd, offsetPtr, byteCount))); |
| if (result == -1) { |
| return -1; |
| } |
| if (javaOffset != NULL) { |
| env->SetLongField(javaOffset, int64RefValueFid, offset); |
| } |
| return result; |
| } |
| |
| static jint Linux_sendtoBytes(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount, jint flags, jobject javaInetAddress, jint port) { |
| ScopedBytesRO bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| |
| return NET_IPV4_FALLBACK(env, ssize_t, sendto, javaFd, javaInetAddress, port, |
| NULL_ADDR_OK, bytes.get() + byteOffset, byteCount, flags); |
| } |
| |
| static jint Linux_sendtoBytesSocketAddress(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount, jint flags, jobject javaSocketAddress) { |
| if (javaSocketAddress != NULL && |
| env->IsInstanceOf(javaSocketAddress, JniConstants::GetInetSocketAddressClass(env))) { |
| // Use the InetAddress version so we get the benefit of NET_IPV4_FALLBACK. |
| jobject javaInetAddress; |
| jint port; |
| javaInetSocketAddressToInetAddressAndPort(env, javaSocketAddress, javaInetAddress, port); |
| return Linux_sendtoBytes(env, NULL, javaFd, javaBytes, byteOffset, byteCount, flags, |
| javaInetAddress, port); |
| } |
| |
| ScopedBytesRO bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| |
| sockaddr_storage ss; |
| socklen_t sa_len; |
| const sockaddr* sa; |
| |
| if (javaSocketAddress != NULL) { |
| if (!javaSocketAddressToSockaddr(env, javaSocketAddress, ss, sa_len)) { |
| return -1; |
| } |
| |
| sa = reinterpret_cast<const sockaddr*>(&ss); |
| } else { |
| sa = NULL; |
| sa_len = 0; |
| } |
| |
| // We don't need the return value because we'll already have thrown. |
| return NET_FAILURE_RETRY(env, ssize_t, sendto, javaFd, bytes.get() + byteOffset, byteCount, flags, sa, sa_len); |
| } |
| |
| static void Linux_setegid(JNIEnv* env, jobject, jint egid) { |
| throwIfMinusOne(env, "setegid", TEMP_FAILURE_RETRY(setegid(egid))); |
| } |
| |
| static void Linux_setenv(JNIEnv* env, jobject, jstring javaName, jstring javaValue, jboolean overwrite) { |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return; |
| } |
| ScopedUtfChars value(env, javaValue); |
| if (value.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "setenv", setenv(name.c_str(), value.c_str(), overwrite)); |
| } |
| |
| static void Linux_seteuid(JNIEnv* env, jobject, jint euid) { |
| throwIfMinusOne(env, "seteuid", TEMP_FAILURE_RETRY(seteuid(euid))); |
| } |
| |
| static void Linux_setgid(JNIEnv* env, jobject, jint gid) { |
| throwIfMinusOne(env, "setgid", TEMP_FAILURE_RETRY(setgid(gid))); |
| } |
| |
| static void Linux_setpgid(JNIEnv* env, jobject, jint pid, int pgid) { |
| throwIfMinusOne(env, "setpgid", TEMP_FAILURE_RETRY(setpgid(pid, pgid))); |
| } |
| |
| static void Linux_setregid(JNIEnv* env, jobject, jint rgid, int egid) { |
| throwIfMinusOne(env, "setregid", TEMP_FAILURE_RETRY(setregid(rgid, egid))); |
| } |
| |
| static void Linux_setreuid(JNIEnv* env, jobject, jint ruid, int euid) { |
| throwIfMinusOne(env, "setreuid", TEMP_FAILURE_RETRY(setreuid(ruid, euid))); |
| } |
| |
| static jint Linux_setsid(JNIEnv* env, jobject) { |
| return throwIfMinusOne(env, "setsid", TEMP_FAILURE_RETRY(setsid())); |
| } |
| |
| static void Linux_setsockoptByte(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jint value) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| u_char byte = value; |
| throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &byte, sizeof(byte)))); |
| } |
| |
| static void Linux_setsockoptIfreq(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jstring javaInterfaceName) { |
| struct ifreq req; |
| if (!fillIfreq(env, javaInterfaceName, req)) { |
| return; |
| } |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &req, sizeof(req)))); |
| } |
| |
| static void Linux_setsockoptInt(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jint value) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value)))); |
| } |
| |
| static void Linux_setsockoptIpMreqn(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jint value) { |
| ip_mreqn req; |
| memset(&req, 0, sizeof(req)); |
| req.imr_ifindex = value; |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &req, sizeof(req)))); |
| } |
| |
| static void Linux_setsockoptGroupReq(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jobject javaGroupReq) { |
| struct group_req req; |
| memset(&req, 0, sizeof(req)); |
| |
| static jfieldID grInterfaceFid = env->GetFieldID(JniConstants::GetStructGroupReqClass(env), "gr_interface", "I"); |
| req.gr_interface = env->GetIntField(javaGroupReq, grInterfaceFid); |
| // Get the IPv4 or IPv6 multicast address to join or leave. |
| static jfieldID grGroupFid = env->GetFieldID(JniConstants::GetStructGroupReqClass(env), "gr_group", "Ljava/net/InetAddress;"); |
| ScopedLocalRef<jobject> javaGroup(env, env->GetObjectField(javaGroupReq, grGroupFid)); |
| socklen_t sa_len; |
| if (!inetAddressToSockaddrVerbatim(env, javaGroup.get(), 0, req.gr_group, sa_len)) { |
| return; |
| } |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| int rc = TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &req, sizeof(req))); |
| if (rc == -1 && errno == EINVAL) { |
| // Maybe we're a 32-bit binary talking to a 64-bit kernel? |
| // glibc doesn't automatically handle this. |
| // http://sourceware.org/bugzilla/show_bug.cgi?id=12080 |
| struct group_req64 { |
| uint32_t gr_interface; |
| uint32_t my_padding; |
| sockaddr_storage gr_group; |
| }; |
| group_req64 req64; |
| req64.gr_interface = req.gr_interface; |
| memcpy(&req64.gr_group, &req.gr_group, sizeof(req.gr_group)); |
| rc = TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &req64, sizeof(req64))); |
| } |
| throwIfMinusOne(env, "setsockopt", rc); |
| } |
| |
| static void Linux_setsockoptLinger(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jobject javaLinger) { |
| static jfieldID lOnoffFid = env->GetFieldID(JniConstants::GetStructLingerClass(env), "l_onoff", "I"); |
| static jfieldID lLingerFid = env->GetFieldID(JniConstants::GetStructLingerClass(env), "l_linger", "I"); |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct linger value; |
| value.l_onoff = env->GetIntField(javaLinger, lOnoffFid); |
| value.l_linger = env->GetIntField(javaLinger, lLingerFid); |
| throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value)))); |
| } |
| |
| static void Linux_setsockoptTimeval(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jobject javaTimeval) { |
| if (javaTimeval == nullptr) { |
| jniThrowNullPointerException(env, "null javaTimeval"); |
| return; |
| } |
| |
| static jfieldID tvSecFid = env->GetFieldID(JniConstants::GetStructTimevalClass(env), "tv_sec", "J"); |
| static jfieldID tvUsecFid = env->GetFieldID(JniConstants::GetStructTimevalClass(env), "tv_usec", "J"); |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct timeval value; |
| value.tv_sec = env->GetLongField(javaTimeval, tvSecFid); |
| value.tv_usec = env->GetLongField(javaTimeval, tvUsecFid); |
| throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value)))); |
| } |
| |
| static void Linux_setuid(JNIEnv* env, jobject, jint uid) { |
| throwIfMinusOne(env, "setuid", TEMP_FAILURE_RETRY(setuid(uid))); |
| } |
| |
| static void Linux_setxattr(JNIEnv* env, jobject, jstring javaPath, jstring javaName, |
| jbyteArray javaValue, jint flags) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return; |
| } |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return; |
| } |
| ScopedBytesRO value(env, javaValue); |
| if (value.get() == NULL) { |
| return; |
| } |
| size_t valueLength = env->GetArrayLength(javaValue); |
| int res = setxattr(path.c_str(), name.c_str(), value.get(), valueLength, flags); |
| if (res < 0) { |
| throwErrnoException(env, "setxattr"); |
| } |
| } |
| |
| static void Linux_shutdown(JNIEnv* env, jobject, jobject javaFd, jint how) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "shutdown", TEMP_FAILURE_RETRY(shutdown(fd, how))); |
| } |
| |
| static jobject Linux_socket(JNIEnv* env, jobject, jint domain, jint type, jint protocol) { |
| if (domain == AF_PACKET) { |
| protocol = htons(protocol); // Packet sockets specify the protocol in host byte order. |
| } |
| int fd = throwIfMinusOne(env, "socket", TEMP_FAILURE_RETRY(socket(domain, type, protocol))); |
| return createFileDescriptorIfOpen(env, fd); |
| } |
| |
| static void Linux_socketpair(JNIEnv* env, jobject, jint domain, jint type, jint protocol, jobject javaFd1, jobject javaFd2) { |
| int fds[2]; |
| // Fail fast to avoid leaking file descriptors if either FileDescriptor is null. |
| if (javaFd1 == nullptr) { |
| jniThrowNullPointerException(env, "null fd1"); |
| } else if (javaFd2 == nullptr) { |
| jniThrowNullPointerException(env, "null fd2"); |
| } else { |
| int rc = throwIfMinusOne(env, "socketpair", |
| TEMP_FAILURE_RETRY(socketpair(domain, type, protocol, fds))); |
| if (rc != -1) { |
| jniSetFileDescriptorOfFD(env, javaFd1, fds[0]); |
| jniSetFileDescriptorOfFD(env, javaFd2, fds[1]); |
| } |
| } |
| } |
| |
| static jlong Linux_splice(JNIEnv* env, jobject, jobject javaFdIn, jobject javaOffIn, jobject javaFdOut, jobject javaOffOut, jlong len, jint flags) { |
| int fdIn = jniGetFDFromFileDescriptor(env, javaFdIn); |
| int fdOut = jniGetFDFromFileDescriptor(env, javaFdOut); |
| int spliceErrno; |
| |
| jlong offIn = (javaOffIn == NULL ? 0 : env->GetLongField(javaOffIn, int64RefValueFid)); |
| jlong offOut = (javaOffOut == NULL ? 0 : env->GetLongField(javaOffOut, int64RefValueFid)); |
| jlong ret = -1; |
| do { |
| bool wasSignaled = false; |
| { |
| AsynchronousCloseMonitor monitorIn(fdIn); |
| AsynchronousCloseMonitor monitorOut(fdOut); |
| ret = splice(fdIn, (javaOffIn == NULL ? NULL : &offIn), |
| fdOut, (javaOffOut == NULL ? NULL : &offOut), |
| len, flags); |
| spliceErrno = errno; |
| wasSignaled = monitorIn.wasSignaled() || monitorOut.wasSignaled(); |
| } |
| if (wasSignaled) { |
| jniThrowException(env, "java/io/InterruptedIOException", "splice interrupted"); |
| ret = -1; |
| break; |
| } |
| if (ret == -1 && spliceErrno != EINTR) { |
| throwErrnoException(env, "splice"); |
| break; |
| } |
| } while (ret == -1); |
| if (ret == -1) { |
| /* If the syscall failed, re-set errno: throwing an exception might have modified it. */ |
| errno = spliceErrno; |
| } else { |
| if (javaOffIn != NULL) { |
| env->SetLongField(javaOffIn, int64RefValueFid, offIn); |
| } |
| if (javaOffOut != NULL) { |
| env->SetLongField(javaOffOut, int64RefValueFid, offOut); |
| } |
| } |
| return ret; |
| } |
| |
| |
| static jobject Linux_stat(JNIEnv* env, jobject, jstring javaPath) { |
| return doStat(env, javaPath, false); |
| } |
| |
| static jobject Linux_statvfs(JNIEnv* env, jobject, jstring javaPath) { |
| ScopedUtfChars path(env, javaPath); |
| if (path.c_str() == NULL) { |
| return NULL; |
| } |
| struct statvfs sb; |
| int rc = TEMP_FAILURE_RETRY(statvfs(path.c_str(), &sb)); |
| if (rc == -1) { |
| throwErrnoException(env, "statvfs"); |
| return NULL; |
| } |
| return makeStructStatVfs(env, sb); |
| } |
| |
| static jstring Linux_strerror(JNIEnv* env, jobject, jint errnum) { |
| char buffer[BUFSIZ]; |
| const char* message = strerror_r(errnum, buffer, sizeof(buffer)); |
| return env->NewStringUTF(message); |
| } |
| |
| static jstring Linux_strsignal(JNIEnv* env, jobject, jint signal) { |
| return env->NewStringUTF(strsignal(signal)); |
| } |
| |
| static void Linux_symlink(JNIEnv* env, jobject, jstring javaOldPath, jstring javaNewPath) { |
| ScopedUtfChars oldPath(env, javaOldPath); |
| if (oldPath.c_str() == NULL) { |
| return; |
| } |
| ScopedUtfChars newPath(env, javaNewPath); |
| if (newPath.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "symlink", TEMP_FAILURE_RETRY(symlink(oldPath.c_str(), newPath.c_str()))); |
| } |
| |
| static jlong Linux_sysconf(JNIEnv* env, jobject, jint name) { |
| // Since -1 is a valid result from sysconf(3), detecting failure is a little more awkward. |
| errno = 0; |
| long result = sysconf(name); |
| if (result == -1L && errno == EINVAL) { |
| throwErrnoException(env, "sysconf"); |
| } |
| return result; |
| } |
| |
| static void Linux_tcdrain(JNIEnv* env, jobject, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "tcdrain", TEMP_FAILURE_RETRY(tcdrain(fd))); |
| } |
| |
| static void Linux_tcsendbreak(JNIEnv* env, jobject, jobject javaFd, jint duration) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| throwIfMinusOne(env, "tcsendbreak", TEMP_FAILURE_RETRY(tcsendbreak(fd, duration))); |
| } |
| |
| static jint Linux_umaskImpl(JNIEnv*, jobject, jint mask) { |
| return umask(mask); |
| } |
| |
| static jobject Linux_uname(JNIEnv* env, jobject) { |
| struct utsname buf; |
| if (TEMP_FAILURE_RETRY(uname(&buf)) == -1) { |
| return NULL; // Can't happen. |
| } |
| return makeStructUtsname(env, buf); |
| } |
| |
| static void Linux_unlink(JNIEnv* env, jobject, jstring javaPathname) { |
| ScopedUtfChars pathname(env, javaPathname); |
| if (pathname.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "unlink", unlink(pathname.c_str())); |
| } |
| |
| static void Linux_unsetenv(JNIEnv* env, jobject, jstring javaName) { |
| ScopedUtfChars name(env, javaName); |
| if (name.c_str() == NULL) { |
| return; |
| } |
| throwIfMinusOne(env, "unsetenv", unsetenv(name.c_str())); |
| } |
| |
| static jint Linux_waitpid(JNIEnv* env, jobject, jint pid, jobject javaStatus, jint options) { |
| int status; |
| int rc = throwIfMinusOne(env, "waitpid", TEMP_FAILURE_RETRY(waitpid(pid, &status, options))); |
| if (javaStatus != NULL && rc != -1) { |
| env->SetIntField(javaStatus, int32RefValueFid, status); |
| } |
| return rc; |
| } |
| |
| static jint Linux_writeBytes(JNIEnv* env, jobject, jobject javaFd, jobject javaBytes, jint byteOffset, jint byteCount) { |
| ScopedBytesRO bytes(env, javaBytes); |
| if (bytes.get() == NULL) { |
| return -1; |
| } |
| return IO_FAILURE_RETRY(env, ssize_t, write, javaFd, bytes.get() + byteOffset, byteCount); |
| } |
| |
| static jint Linux_writev(JNIEnv* env, jobject, jobject javaFd, jobjectArray buffers, jintArray offsets, jintArray byteCounts) { |
| IoVec<ScopedBytesRO> ioVec(env, env->GetArrayLength(buffers)); |
| if (!ioVec.init(buffers, offsets, byteCounts)) { |
| return -1; |
| } |
| return IO_FAILURE_RETRY(env, ssize_t, writev, javaFd, ioVec.get(), ioVec.size()); |
| } |
| |
| #define NATIVE_METHOD_OVERLOAD(className, functionName, signature, variant) \ |
| { #functionName, signature, reinterpret_cast<void*>(className ## _ ## functionName ## variant) } |
| |
| static JNINativeMethod gMethods[] = { |
| NATIVE_METHOD(Linux, accept, "(Ljava/io/FileDescriptor;Ljava/net/SocketAddress;)Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, access, "(Ljava/lang/String;I)Z"), |
| NATIVE_METHOD(Linux, android_fdsan_exchange_owner_tag, "(Ljava/io/FileDescriptor;JJ)V"), |
| NATIVE_METHOD(Linux, android_fdsan_get_owner_tag, "(Ljava/io/FileDescriptor;)J"), |
| NATIVE_METHOD(Linux, android_fdsan_get_tag_type, "(J)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, android_fdsan_get_tag_value, "(J)J"), |
| NATIVE_METHOD(Linux, android_getaddrinfo, "(Ljava/lang/String;Landroid/system/StructAddrinfo;I)[Ljava/net/InetAddress;"), |
| NATIVE_METHOD(Linux, bind, "(Ljava/io/FileDescriptor;Ljava/net/InetAddress;I)V"), |
| NATIVE_METHOD_OVERLOAD(Linux, bind, "(Ljava/io/FileDescriptor;Ljava/net/SocketAddress;)V", SocketAddress), |
| NATIVE_METHOD(Linux, capget, |
| "(Landroid/system/StructCapUserHeader;)[Landroid/system/StructCapUserData;"), |
| NATIVE_METHOD(Linux, capset, |
| "(Landroid/system/StructCapUserHeader;[Landroid/system/StructCapUserData;)V"), |
| NATIVE_METHOD(Linux, chmod, "(Ljava/lang/String;I)V"), |
| NATIVE_METHOD(Linux, chown, "(Ljava/lang/String;II)V"), |
| NATIVE_METHOD(Linux, close, "(Ljava/io/FileDescriptor;)V"), |
| NATIVE_METHOD(Linux, connect, "(Ljava/io/FileDescriptor;Ljava/net/InetAddress;I)V"), |
| NATIVE_METHOD_OVERLOAD(Linux, connect, "(Ljava/io/FileDescriptor;Ljava/net/SocketAddress;)V", SocketAddress), |
| NATIVE_METHOD(Linux, dup, "(Ljava/io/FileDescriptor;)Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, dup2, "(Ljava/io/FileDescriptor;I)Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, environ, "()[Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, execv, "(Ljava/lang/String;[Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, execve, "(Ljava/lang/String;[Ljava/lang/String;[Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, fchmod, "(Ljava/io/FileDescriptor;I)V"), |
| NATIVE_METHOD(Linux, fchown, "(Ljava/io/FileDescriptor;II)V"), |
| NATIVE_METHOD(Linux, fcntlInt, "(Ljava/io/FileDescriptor;II)I"), |
| NATIVE_METHOD(Linux, fcntlVoid, "(Ljava/io/FileDescriptor;I)I"), |
| NATIVE_METHOD(Linux, fdatasync, "(Ljava/io/FileDescriptor;)V"), |
| NATIVE_METHOD(Linux, fstat, "(Ljava/io/FileDescriptor;)Landroid/system/StructStat;"), |
| NATIVE_METHOD(Linux, fstatvfs, "(Ljava/io/FileDescriptor;)Landroid/system/StructStatVfs;"), |
| NATIVE_METHOD(Linux, fsync, "(Ljava/io/FileDescriptor;)V"), |
| NATIVE_METHOD(Linux, ftruncate, "(Ljava/io/FileDescriptor;J)V"), |
| NATIVE_METHOD(Linux, gai_strerror, "(I)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, getegid, "()I"), |
| NATIVE_METHOD(Linux, geteuid, "()I"), |
| NATIVE_METHOD(Linux, getgid, "()I"), |
| NATIVE_METHOD(Linux, getenv, "(Ljava/lang/String;)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, getnameinfo, "(Ljava/net/InetAddress;I)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, getpeername, "(Ljava/io/FileDescriptor;)Ljava/net/SocketAddress;"), |
| NATIVE_METHOD(Linux, getpgid, "(I)I"), |
| NATIVE_METHOD(Linux, getpid, "()I"), |
| NATIVE_METHOD(Linux, getppid, "()I"), |
| NATIVE_METHOD(Linux, getpwnam, "(Ljava/lang/String;)Landroid/system/StructPasswd;"), |
| NATIVE_METHOD(Linux, getpwuid, "(I)Landroid/system/StructPasswd;"), |
| NATIVE_METHOD(Linux, getrlimit, "(I)Landroid/system/StructRlimit;"), |
| NATIVE_METHOD(Linux, getsockname, "(Ljava/io/FileDescriptor;)Ljava/net/SocketAddress;"), |
| NATIVE_METHOD(Linux, getsockoptByte, "(Ljava/io/FileDescriptor;II)I"), |
| NATIVE_METHOD(Linux, getsockoptInAddr, "(Ljava/io/FileDescriptor;II)Ljava/net/InetAddress;"), |
| NATIVE_METHOD(Linux, getsockoptInt, "(Ljava/io/FileDescriptor;II)I"), |
| NATIVE_METHOD(Linux, getsockoptLinger, "(Ljava/io/FileDescriptor;II)Landroid/system/StructLinger;"), |
| NATIVE_METHOD(Linux, getsockoptTimeval, "(Ljava/io/FileDescriptor;II)Landroid/system/StructTimeval;"), |
| NATIVE_METHOD(Linux, getsockoptUcred, "(Ljava/io/FileDescriptor;II)Landroid/system/StructUcred;"), |
| NATIVE_METHOD(Linux, gettid, "()I"), |
| NATIVE_METHOD(Linux, getuid, "()I"), |
| NATIVE_METHOD(Linux, getxattr, "(Ljava/lang/String;Ljava/lang/String;)[B"), |
| NATIVE_METHOD(Linux, getifaddrs, "()[Landroid/system/StructIfaddrs;"), |
| NATIVE_METHOD(Linux, if_indextoname, "(I)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, if_nametoindex, "(Ljava/lang/String;)I"), |
| NATIVE_METHOD(Linux, inet_pton, "(ILjava/lang/String;)Ljava/net/InetAddress;"), |
| NATIVE_METHOD(Linux, ioctlFlags, "(Ljava/io/FileDescriptor;Ljava/lang/String;)I"), |
| NATIVE_METHOD(Linux, ioctlInetAddress, "(Ljava/io/FileDescriptor;ILjava/lang/String;)Ljava/net/InetAddress;"), |
| NATIVE_METHOD(Linux, ioctlInt, "(Ljava/io/FileDescriptor;ILandroid/system/Int32Ref;)I"), |
| NATIVE_METHOD(Linux, ioctlMTU, "(Ljava/io/FileDescriptor;Ljava/lang/String;)I"), |
| NATIVE_METHOD(Linux, isatty, "(Ljava/io/FileDescriptor;)Z"), |
| NATIVE_METHOD(Linux, kill, "(II)V"), |
| NATIVE_METHOD(Linux, lchown, "(Ljava/lang/String;II)V"), |
| NATIVE_METHOD(Linux, link, "(Ljava/lang/String;Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, listen, "(Ljava/io/FileDescriptor;I)V"), |
| NATIVE_METHOD(Linux, listxattr, "(Ljava/lang/String;)[Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, lseek, "(Ljava/io/FileDescriptor;JI)J"), |
| NATIVE_METHOD(Linux, lstat, "(Ljava/lang/String;)Landroid/system/StructStat;"), |
| NATIVE_METHOD(Linux, memfd_create, "(Ljava/lang/String;I)Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, mincore, "(JJ[B)V"), |
| NATIVE_METHOD(Linux, mkdir, "(Ljava/lang/String;I)V"), |
| NATIVE_METHOD(Linux, mkfifo, "(Ljava/lang/String;I)V"), |
| NATIVE_METHOD(Linux, mlock, "(JJ)V"), |
| NATIVE_METHOD(Linux, mmap, "(JJIILjava/io/FileDescriptor;J)J"), |
| NATIVE_METHOD(Linux, msync, "(JJI)V"), |
| NATIVE_METHOD(Linux, munlock, "(JJ)V"), |
| NATIVE_METHOD(Linux, munmap, "(JJ)V"), |
| NATIVE_METHOD(Linux, open, "(Ljava/lang/String;II)Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, pipe2, "(I)[Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, poll, "([Landroid/system/StructPollfd;I)I"), |
| NATIVE_METHOD(Linux, posix_fallocate, "(Ljava/io/FileDescriptor;JJ)V"), |
| NATIVE_METHOD(Linux, prctl, "(IJJJJ)I"), |
| NATIVE_METHOD(Linux, preadBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;IIJ)I"), |
| NATIVE_METHOD(Linux, pwriteBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;IIJ)I"), |
| NATIVE_METHOD(Linux, readBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;II)I"), |
| NATIVE_METHOD(Linux, readlink, "(Ljava/lang/String;)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, realpath, "(Ljava/lang/String;)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, readv, "(Ljava/io/FileDescriptor;[Ljava/lang/Object;[I[I)I"), |
| NATIVE_METHOD(Linux, recvfromBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;IIILjava/net/InetSocketAddress;)I"), |
| NATIVE_METHOD(Linux, remove, "(Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, removexattr, "(Ljava/lang/String;Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, rename, "(Ljava/lang/String;Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, sendfile, "(Ljava/io/FileDescriptor;Ljava/io/FileDescriptor;Landroid/system/Int64Ref;J)J"), |
| NATIVE_METHOD(Linux, sendtoBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;IIILjava/net/InetAddress;I)I"), |
| NATIVE_METHOD_OVERLOAD(Linux, sendtoBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;IIILjava/net/SocketAddress;)I", SocketAddress), |
| NATIVE_METHOD(Linux, setegid, "(I)V"), |
| NATIVE_METHOD(Linux, setenv, "(Ljava/lang/String;Ljava/lang/String;Z)V"), |
| NATIVE_METHOD(Linux, seteuid, "(I)V"), |
| NATIVE_METHOD(Linux, setgid, "(I)V"), |
| NATIVE_METHOD(Linux, setpgid, "(II)V"), |
| NATIVE_METHOD(Linux, setregid, "(II)V"), |
| NATIVE_METHOD(Linux, setreuid, "(II)V"), |
| NATIVE_METHOD(Linux, setsid, "()I"), |
| NATIVE_METHOD(Linux, setsockoptByte, "(Ljava/io/FileDescriptor;III)V"), |
| NATIVE_METHOD(Linux, setsockoptIfreq, "(Ljava/io/FileDescriptor;IILjava/lang/String;)V"), |
| NATIVE_METHOD(Linux, setsockoptInt, "(Ljava/io/FileDescriptor;III)V"), |
| NATIVE_METHOD(Linux, setsockoptIpMreqn, "(Ljava/io/FileDescriptor;III)V"), |
| NATIVE_METHOD(Linux, setsockoptGroupReq, "(Ljava/io/FileDescriptor;IILandroid/system/StructGroupReq;)V"), |
| NATIVE_METHOD(Linux, setsockoptLinger, "(Ljava/io/FileDescriptor;IILandroid/system/StructLinger;)V"), |
| NATIVE_METHOD(Linux, setsockoptTimeval, "(Ljava/io/FileDescriptor;IILandroid/system/StructTimeval;)V"), |
| NATIVE_METHOD(Linux, setuid, "(I)V"), |
| NATIVE_METHOD(Linux, setxattr, "(Ljava/lang/String;Ljava/lang/String;[BI)V"), |
| NATIVE_METHOD(Linux, shutdown, "(Ljava/io/FileDescriptor;I)V"), |
| NATIVE_METHOD(Linux, socket, "(III)Ljava/io/FileDescriptor;"), |
| NATIVE_METHOD(Linux, socketpair, "(IIILjava/io/FileDescriptor;Ljava/io/FileDescriptor;)V"), |
| NATIVE_METHOD(Linux, splice, "(Ljava/io/FileDescriptor;Landroid/system/Int64Ref;Ljava/io/FileDescriptor;Landroid/system/Int64Ref;JI)J"), |
| NATIVE_METHOD(Linux, stat, "(Ljava/lang/String;)Landroid/system/StructStat;"), |
| NATIVE_METHOD(Linux, statvfs, "(Ljava/lang/String;)Landroid/system/StructStatVfs;"), |
| NATIVE_METHOD(Linux, strerror, "(I)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, strsignal, "(I)Ljava/lang/String;"), |
| NATIVE_METHOD(Linux, symlink, "(Ljava/lang/String;Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, sysconf, "(I)J"), |
| NATIVE_METHOD(Linux, tcdrain, "(Ljava/io/FileDescriptor;)V"), |
| NATIVE_METHOD(Linux, tcsendbreak, "(Ljava/io/FileDescriptor;I)V"), |
| NATIVE_METHOD(Linux, umaskImpl, "(I)I"), |
| NATIVE_METHOD(Linux, uname, "()Landroid/system/StructUtsname;"), |
| NATIVE_METHOD(Linux, unlink, "(Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, unsetenv, "(Ljava/lang/String;)V"), |
| NATIVE_METHOD(Linux, waitpid, "(ILandroid/system/Int32Ref;I)I"), |
| NATIVE_METHOD(Linux, writeBytes, "(Ljava/io/FileDescriptor;Ljava/lang/Object;II)I"), |
| NATIVE_METHOD(Linux, writev, "(Ljava/io/FileDescriptor;[Ljava/lang/Object;[I[I)I"), |
| }; |
| void register_libcore_io_Linux(JNIEnv* env) { |
| // Note: it is safe to only cache the fields as boot classpath classes are never |
| // unloaded. |
| ScopedLocalRef<jclass> int32RefClass(env, env->FindClass("android/system/Int32Ref")); |
| CHECK(int32RefClass != nullptr); |
| int32RefValueFid = env->GetFieldID(int32RefClass.get(), "value", "I"); |
| CHECK(int32RefValueFid != nullptr); |
| |
| ScopedLocalRef<jclass> int64RefClass(env, env->FindClass("android/system/Int64Ref")); |
| CHECK(int64RefClass != nullptr); |
| int64RefValueFid = env->GetFieldID(int64RefClass.get(), "value", "J"); |
| CHECK(int64RefValueFid != nullptr); |
| |
| jniRegisterNativeMethods(env, "libcore/io/Linux", gMethods, NELEM(gMethods)); |
| } |