| /* |
| * 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. |
| */ |
| |
| package libcore.io; |
| |
| import android.system.ErrnoException; |
| import android.system.GaiException; |
| import android.system.Int32Ref; |
| import android.system.Int64Ref; |
| import android.system.StructAddrinfo; |
| import android.system.StructCapUserData; |
| import android.system.StructCapUserHeader; |
| import android.system.StructGroupReq; |
| import android.system.StructIfaddrs; |
| import android.system.StructLinger; |
| import android.system.StructMsghdr; |
| import android.system.StructPasswd; |
| import android.system.StructPollfd; |
| import android.system.StructRlimit; |
| import android.system.StructStat; |
| import android.system.StructStatVfs; |
| import android.system.StructTimeval; |
| import android.system.StructUcred; |
| import android.system.StructUtsname; |
| |
| import java.io.FileDescriptor; |
| import java.io.InterruptedIOException; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.SocketAddress; |
| import java.net.SocketException; |
| import java.nio.ByteBuffer; |
| import java.nio.NioUtils; |
| |
| public final class Linux implements Os { |
| Linux() { } |
| |
| public native FileDescriptor accept(FileDescriptor fd, SocketAddress peerAddress) throws ErrnoException, SocketException; |
| public native boolean access(String path, int mode) throws ErrnoException; |
| public native InetAddress[] android_getaddrinfo(String node, StructAddrinfo hints, int netId) throws GaiException; |
| public native void bind(FileDescriptor fd, InetAddress address, int port) throws ErrnoException, SocketException; |
| public native void bind(FileDescriptor fd, SocketAddress address) throws ErrnoException, SocketException; |
| @Override |
| public native StructCapUserData[] capget(StructCapUserHeader hdr) throws ErrnoException; |
| @Override |
| public native void capset(StructCapUserHeader hdr, StructCapUserData[] data) |
| throws ErrnoException; |
| public native void chmod(String path, int mode) throws ErrnoException; |
| public native void chown(String path, int uid, int gid) throws ErrnoException; |
| |
| public native void close(FileDescriptor fd) throws ErrnoException; |
| public native void android_fdsan_exchange_owner_tag(FileDescriptor fd, long previousOwnerId, long newOwnerId); |
| public native long android_fdsan_get_owner_tag(FileDescriptor fd); |
| public native String android_fdsan_get_tag_type(long tag); |
| public native long android_fdsan_get_tag_value(long tag); |
| |
| public native void connect(FileDescriptor fd, InetAddress address, int port) throws ErrnoException, SocketException; |
| public native void connect(FileDescriptor fd, SocketAddress address) throws ErrnoException, SocketException; |
| public native FileDescriptor dup(FileDescriptor oldFd) throws ErrnoException; |
| public native FileDescriptor dup2(FileDescriptor oldFd, int newFd) throws ErrnoException; |
| public native String[] environ(); |
| public native void execv(String filename, String[] argv) throws ErrnoException; |
| public native void execve(String filename, String[] argv, String[] envp) throws ErrnoException; |
| public native void fchmod(FileDescriptor fd, int mode) throws ErrnoException; |
| public native void fchown(FileDescriptor fd, int uid, int gid) throws ErrnoException; |
| public native int fcntlInt(FileDescriptor fd, int cmd, int arg) throws ErrnoException; |
| public native int fcntlVoid(FileDescriptor fd, int cmd) throws ErrnoException; |
| public native void fdatasync(FileDescriptor fd) throws ErrnoException; |
| public native StructStat fstat(FileDescriptor fd) throws ErrnoException; |
| public native StructStatVfs fstatvfs(FileDescriptor fd) throws ErrnoException; |
| public native void fsync(FileDescriptor fd) throws ErrnoException; |
| public native void ftruncate(FileDescriptor fd, long length) throws ErrnoException; |
| public native String gai_strerror(int error); |
| public native int getegid(); |
| public native int geteuid(); |
| public native int getgid(); |
| public native String getenv(String name); |
| public native String getnameinfo(InetAddress address, int flags) throws GaiException; |
| public native SocketAddress getpeername(FileDescriptor fd) throws ErrnoException; |
| public native int getpgid(int pid); |
| public native int getpid(); |
| public native int getppid(); |
| public native StructPasswd getpwnam(String name) throws ErrnoException; |
| public native StructPasswd getpwuid(int uid) throws ErrnoException; |
| public native StructRlimit getrlimit(int resource) throws ErrnoException; |
| public native SocketAddress getsockname(FileDescriptor fd) throws ErrnoException; |
| public native int getsockoptByte(FileDescriptor fd, int level, int option) throws ErrnoException; |
| public native InetAddress getsockoptInAddr(FileDescriptor fd, int level, int option) throws ErrnoException; |
| public native int getsockoptInt(FileDescriptor fd, int level, int option) throws ErrnoException; |
| public native StructLinger getsockoptLinger(FileDescriptor fd, int level, int option) throws ErrnoException; |
| public native StructTimeval getsockoptTimeval(FileDescriptor fd, int level, int option) throws ErrnoException; |
| public native StructUcred getsockoptUcred(FileDescriptor fd, int level, int option) throws ErrnoException; |
| public native int gettid(); |
| public native int getuid(); |
| public native byte[] getxattr(String path, String name) throws ErrnoException; |
| public native StructIfaddrs[] getifaddrs() throws ErrnoException; |
| public native String if_indextoname(int index); |
| public native int if_nametoindex(String name); |
| public native InetAddress inet_pton(int family, String address); |
| public native int ioctlFlags(FileDescriptor fd, String interfaceName) throws ErrnoException; |
| public native InetAddress ioctlInetAddress(FileDescriptor fd, int cmd, String interfaceName) throws ErrnoException; |
| public native int ioctlInt(FileDescriptor fd, int cmd) throws ErrnoException; |
| public native int ioctlMTU(FileDescriptor fd, String interfaceName) throws ErrnoException; |
| public native boolean isatty(FileDescriptor fd); |
| public native void kill(int pid, int signal) throws ErrnoException; |
| public native void lchown(String path, int uid, int gid) throws ErrnoException; |
| public native void link(String oldPath, String newPath) throws ErrnoException; |
| public native void listen(FileDescriptor fd, int backlog) throws ErrnoException; |
| public native String[] listxattr(String path) throws ErrnoException; |
| public native long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException; |
| public native StructStat lstat(String path) throws ErrnoException; |
| public native FileDescriptor memfd_create(String name, int flags) throws ErrnoException; |
| public native void mincore(long address, long byteCount, byte[] vector) throws ErrnoException; |
| public native void mkdir(String path, int mode) throws ErrnoException; |
| public native void mkfifo(String path, int mode) throws ErrnoException; |
| public native void mlock(long address, long byteCount) throws ErrnoException; |
| public native long mmap(long address, long byteCount, int prot, int flags, FileDescriptor fd, long offset) throws ErrnoException; |
| public native void msync(long address, long byteCount, int flags) throws ErrnoException; |
| public native void munlock(long address, long byteCount) throws ErrnoException; |
| public native void munmap(long address, long byteCount) throws ErrnoException; |
| public native FileDescriptor open(String path, int flags, int mode) throws ErrnoException; |
| public native FileDescriptor[] pipe2(int flags) throws ErrnoException; |
| public native int poll(StructPollfd[] fds, int timeoutMs) throws ErrnoException; |
| public native void posix_fallocate(FileDescriptor fd, long offset, long length) throws ErrnoException; |
| public native int prctl(int option, long arg2, long arg3, long arg4, long arg5) throws ErrnoException; |
| public int pread(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException, InterruptedIOException { |
| final int bytesRead; |
| final int position = buffer.position(); |
| |
| if (buffer.isDirect()) { |
| bytesRead = preadBytes(fd, buffer, position, buffer.remaining(), offset); |
| } else { |
| bytesRead = preadBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + position, buffer.remaining(), offset); |
| } |
| |
| maybeUpdateBufferPosition(buffer, position, bytesRead); |
| return bytesRead; |
| } |
| public int pread(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException { |
| // This indirection isn't strictly necessary, but ensures that our public interface is type safe. |
| return preadBytes(fd, bytes, byteOffset, byteCount, offset); |
| } |
| private native int preadBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException; |
| public int pwrite(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException, InterruptedIOException { |
| final int bytesWritten; |
| final int position = buffer.position(); |
| |
| if (buffer.isDirect()) { |
| bytesWritten = pwriteBytes(fd, buffer, position, buffer.remaining(), offset); |
| } else { |
| bytesWritten = pwriteBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + position, buffer.remaining(), offset); |
| } |
| |
| maybeUpdateBufferPosition(buffer, position, bytesWritten); |
| return bytesWritten; |
| } |
| public int pwrite(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException { |
| // This indirection isn't strictly necessary, but ensures that our public interface is type safe. |
| return pwriteBytes(fd, bytes, byteOffset, byteCount, offset); |
| } |
| private native int pwriteBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException; |
| public int read(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException, InterruptedIOException { |
| final int bytesRead; |
| final int position = buffer.position(); |
| |
| if (buffer.isDirect()) { |
| bytesRead = readBytes(fd, buffer, position, buffer.remaining()); |
| } else { |
| bytesRead = readBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + position, buffer.remaining()); |
| } |
| |
| maybeUpdateBufferPosition(buffer, position, bytesRead); |
| return bytesRead; |
| } |
| public int read(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException, InterruptedIOException { |
| // This indirection isn't strictly necessary, but ensures that our public interface is type safe. |
| return readBytes(fd, bytes, byteOffset, byteCount); |
| } |
| private native int readBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException, InterruptedIOException; |
| public native String readlink(String path) throws ErrnoException; |
| public native String realpath(String path) throws ErrnoException; |
| public native int readv(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException, InterruptedIOException; |
| public int recvfrom(FileDescriptor fd, ByteBuffer buffer, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException { |
| final int bytesReceived; |
| final int position = buffer.position(); |
| |
| if (buffer.isDirect()) { |
| bytesReceived = recvfromBytes(fd, buffer, position, buffer.remaining(), flags, srcAddress); |
| } else { |
| bytesReceived = recvfromBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + position, buffer.remaining(), flags, srcAddress); |
| } |
| |
| maybeUpdateBufferPosition(buffer, position, bytesReceived); |
| return bytesReceived; |
| } |
| public int recvfrom(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException { |
| // This indirection isn't strictly necessary, but ensures that our public interface is type safe. |
| return recvfromBytes(fd, bytes, byteOffset, byteCount, flags, srcAddress); |
| } |
| private native int recvfromBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException; |
| public native int recvmsg(FileDescriptor fd, StructMsghdr msg, int flags) throws ErrnoException, SocketException; |
| public native void remove(String path) throws ErrnoException; |
| public native void removexattr(String path, String name) throws ErrnoException; |
| public native void rename(String oldPath, String newPath) throws ErrnoException; |
| public native long sendfile(FileDescriptor outFd, FileDescriptor inFd, Int64Ref offset, long byteCount) throws ErrnoException; |
| public native int sendmsg(FileDescriptor fd, StructMsghdr msg, int flags) throws ErrnoException, SocketException; |
| public int sendto(FileDescriptor fd, ByteBuffer buffer, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException { |
| final int bytesSent; |
| final int position = buffer.position(); |
| |
| if (buffer.isDirect()) { |
| bytesSent = sendtoBytes(fd, buffer, position, buffer.remaining(), flags, inetAddress, port); |
| } else { |
| bytesSent = sendtoBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + position, buffer.remaining(), flags, inetAddress, port); |
| } |
| |
| maybeUpdateBufferPosition(buffer, position, bytesSent); |
| return bytesSent; |
| } |
| public int sendto(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException { |
| // This indirection isn't strictly necessary, but ensures that our public interface is type safe. |
| return sendtoBytes(fd, bytes, byteOffset, byteCount, flags, inetAddress, port); |
| } |
| public int sendto(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, SocketAddress address) throws ErrnoException, SocketException { |
| return sendtoBytes(fd, bytes, byteOffset, byteCount, flags, address); |
| } |
| private native int sendtoBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException; |
| private native int sendtoBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, SocketAddress address) throws ErrnoException, SocketException; |
| public native void setegid(int egid) throws ErrnoException; |
| public native void setenv(String name, String value, boolean overwrite) throws ErrnoException; |
| public native void seteuid(int euid) throws ErrnoException; |
| public native void setgid(int gid) throws ErrnoException; |
| public native void setpgid(int pid, int pgid) throws ErrnoException; |
| public native void setregid(int rgid, int egid) throws ErrnoException; |
| public native void setreuid(int ruid, int euid) throws ErrnoException; |
| public native int setsid() throws ErrnoException; |
| public native void setsockoptByte(FileDescriptor fd, int level, int option, int value) throws ErrnoException; |
| public native void setsockoptIfreq(FileDescriptor fd, int level, int option, String value) throws ErrnoException; |
| public native void setsockoptInt(FileDescriptor fd, int level, int option, int value) throws ErrnoException; |
| public native void setsockoptIpMreqn(FileDescriptor fd, int level, int option, int value) throws ErrnoException; |
| public native void setsockoptGroupReq(FileDescriptor fd, int level, int option, StructGroupReq value) throws ErrnoException; |
| public native void setsockoptLinger(FileDescriptor fd, int level, int option, StructLinger value) throws ErrnoException; |
| public native void setsockoptTimeval(FileDescriptor fd, int level, int option, StructTimeval value) throws ErrnoException; |
| public native void setuid(int uid) throws ErrnoException; |
| public native void setxattr(String path, String name, byte[] value, int flags) throws ErrnoException; |
| public native void shutdown(FileDescriptor fd, int how) throws ErrnoException; |
| public native FileDescriptor socket(int domain, int type, int protocol) throws ErrnoException; |
| public native void socketpair(int domain, int type, int protocol, FileDescriptor fd1, FileDescriptor fd2) throws ErrnoException; |
| public native long splice(FileDescriptor fdIn, Int64Ref offIn, FileDescriptor fdOut, Int64Ref offOut, long len, int flags) throws ErrnoException; |
| public native StructStat stat(String path) throws ErrnoException; |
| public native StructStatVfs statvfs(String path) throws ErrnoException; |
| public native String strerror(int errno); |
| public native String strsignal(int signal); |
| public native void symlink(String oldPath, String newPath) throws ErrnoException; |
| public native long sysconf(int name); |
| public native void tcdrain(FileDescriptor fd) throws ErrnoException; |
| public native void tcsendbreak(FileDescriptor fd, int duration) throws ErrnoException; |
| public int umask(int mask) { |
| if ((mask & 0777) != mask) { |
| throw new IllegalArgumentException("Invalid umask: " + mask); |
| } |
| return umaskImpl(mask); |
| } |
| private native int umaskImpl(int mask); |
| public native StructUtsname uname(); |
| public native void unlink(String pathname) throws ErrnoException; |
| public native void unsetenv(String name) throws ErrnoException; |
| public native int waitpid(int pid, Int32Ref status, int options) throws ErrnoException; |
| public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException, InterruptedIOException { |
| final int bytesWritten; |
| final int position = buffer.position(); |
| if (buffer.isDirect()) { |
| bytesWritten = writeBytes(fd, buffer, position, buffer.remaining()); |
| } else { |
| bytesWritten = writeBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + position, buffer.remaining()); |
| } |
| |
| maybeUpdateBufferPosition(buffer, position, bytesWritten); |
| return bytesWritten; |
| } |
| public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException, InterruptedIOException { |
| // This indirection isn't strictly necessary, but ensures that our public interface is type safe. |
| return writeBytes(fd, bytes, byteOffset, byteCount); |
| } |
| private native int writeBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException, InterruptedIOException; |
| public native int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException, InterruptedIOException; |
| |
| private static void maybeUpdateBufferPosition(ByteBuffer buffer, int originalPosition, int bytesReadOrWritten) { |
| if (bytesReadOrWritten > 0) { |
| buffer.position(bytesReadOrWritten + originalPosition); |
| } |
| } |
| } |