1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package libcore.io; 18 19 import java.io.FileDescriptor; 20 import java.net.InetAddress; 21 import java.net.InetSocketAddress; 22 import java.net.SocketAddress; 23 import java.nio.ByteBuffer; 24 import java.nio.NioUtils; 25 import libcore.util.MutableInt; 26 import libcore.util.MutableLong; 27 28 public final class Posix implements Os { 29 Posix() { } 30 31 public native FileDescriptor accept(FileDescriptor fd, InetSocketAddress peerAddress) throws ErrnoException; 32 public native boolean access(String path, int mode) throws ErrnoException; 33 public native void bind(FileDescriptor fd, InetAddress address, int port) throws ErrnoException; 34 public native void chmod(String path, int mode) throws ErrnoException; 35 public native void close(FileDescriptor fd) throws ErrnoException; 36 public native void connect(FileDescriptor fd, InetAddress address, int port) throws ErrnoException; 37 public native FileDescriptor dup(FileDescriptor oldFd) throws ErrnoException; 38 public native FileDescriptor dup2(FileDescriptor oldFd, int newFd) throws ErrnoException; 39 public native String[] environ(); 40 public native int fcntlVoid(FileDescriptor fd, int cmd) throws ErrnoException; 41 public native int fcntlLong(FileDescriptor fd, int cmd, long arg) throws ErrnoException; 42 public native int fcntlFlock(FileDescriptor fd, int cmd, StructFlock arg) throws ErrnoException; 43 public native void fdatasync(FileDescriptor fd) throws ErrnoException; 44 public native StructStat fstat(FileDescriptor fd) throws ErrnoException; 45 public native StructStatFs fstatfs(FileDescriptor fd) throws ErrnoException; 46 public native void fsync(FileDescriptor fd) throws ErrnoException; 47 public native void ftruncate(FileDescriptor fd, long length) throws ErrnoException; 48 public native String gai_strerror(int error); 49 public native InetAddress[] getaddrinfo(String node, StructAddrinfo hints) throws GaiException; 50 public native int getegid(); 51 public native int geteuid(); 52 public native int getgid(); 53 public native String getenv(String name); 54 public native String getnameinfo(InetAddress address, int flags) throws GaiException; 55 public native int getpid(); 56 public native int getppid(); 57 public native StructPasswd getpwnam(String name) throws ErrnoException; 58 public native StructPasswd getpwuid(int uid) throws ErrnoException; 59 public native SocketAddress getsockname(FileDescriptor fd) throws ErrnoException; 60 public native int getsockoptByte(FileDescriptor fd, int level, int option) throws ErrnoException; 61 public native InetAddress getsockoptInAddr(FileDescriptor fd, int level, int option) throws ErrnoException; 62 public native int getsockoptInt(FileDescriptor fd, int level, int option) throws ErrnoException; 63 public native StructLinger getsockoptLinger(FileDescriptor fd, int level, int option) throws ErrnoException; 64 public native StructTimeval getsockoptTimeval(FileDescriptor fd, int level, int option) throws ErrnoException; 65 public native int getuid(); 66 public native String if_indextoname(int index); 67 public native InetAddress inet_pton(int family, String address); 68 public native InetAddress ioctlInetAddress(FileDescriptor fd, int cmd, String interfaceName) throws ErrnoException; 69 public native int ioctlInt(FileDescriptor fd, int cmd, MutableInt arg) throws ErrnoException; 70 public native boolean isatty(FileDescriptor fd); 71 public native void kill(int pid, int signal) throws ErrnoException; 72 public native void listen(FileDescriptor fd, int backlog) throws ErrnoException; 73 public native long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException; 74 public native StructStat lstat(String path) throws ErrnoException; 75 public native void mincore(long address, long byteCount, byte[] vector) throws ErrnoException; 76 public native void mkdir(String path, int mode) throws ErrnoException; 77 public native void mlock(long address, long byteCount) throws ErrnoException; 78 public native long mmap(long address, long byteCount, int prot, int flags, FileDescriptor fd, long offset) throws ErrnoException; 79 public native void msync(long address, long byteCount, int flags) throws ErrnoException; 80 public native void munlock(long address, long byteCount) throws ErrnoException; 81 public native void munmap(long address, long byteCount) throws ErrnoException; 82 public native FileDescriptor open(String path, int flags, int mode) throws ErrnoException; 83 public native FileDescriptor[] pipe() throws ErrnoException; 84 public native int poll(StructPollfd[] fds, int timeoutMs) throws ErrnoException; 85 public int pread(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException { 86 if (buffer.isDirect()) { 87 return preadBytes(fd, buffer, buffer.position(), buffer.remaining(), offset); 88 } else { 89 return preadBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset); 90 } 91 } 92 public int pread(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException { 93 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 94 return preadBytes(fd, bytes, byteOffset, byteCount, offset); 95 } 96 private native int preadBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException; 97 public int pwrite(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException { 98 if (buffer.isDirect()) { 99 return pwriteBytes(fd, buffer, buffer.position(), buffer.remaining(), offset); 100 } else { 101 return pwriteBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset); 102 } 103 } 104 public int pwrite(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException { 105 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 106 return pwriteBytes(fd, bytes, byteOffset, byteCount, offset); 107 } 108 private native int pwriteBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException; 109 public int read(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException { 110 if (buffer.isDirect()) { 111 return readBytes(fd, buffer, buffer.position(), buffer.remaining()); 112 } else { 113 return readBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining()); 114 } 115 } 116 public int read(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException { 117 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 118 return readBytes(fd, bytes, byteOffset, byteCount); 119 } 120 private native int readBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException; 121 public native int readv(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException; 122 public int recvfrom(FileDescriptor fd, ByteBuffer buffer, int flags, InetSocketAddress srcAddress) throws ErrnoException { 123 if (buffer.isDirect()) { 124 return recvfromBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, srcAddress); 125 } else { 126 return recvfromBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, srcAddress); 127 } 128 } 129 public int recvfrom(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException { 130 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 131 return recvfromBytes(fd, bytes, byteOffset, byteCount, flags, srcAddress); 132 } 133 private native int recvfromBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException; 134 public native void remove(String path) throws ErrnoException; 135 public native void rename(String oldPath, String newPath) throws ErrnoException; 136 public native long sendfile(FileDescriptor outFd, FileDescriptor inFd, MutableLong inOffset, long byteCount) throws ErrnoException; 137 public int sendto(FileDescriptor fd, ByteBuffer buffer, int flags, InetAddress inetAddress, int port) throws ErrnoException { 138 if (buffer.isDirect()) { 139 return sendtoBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, inetAddress, port); 140 } else { 141 return sendtoBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, inetAddress, port); 142 } 143 } 144 public int sendto(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException { 145 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 146 return sendtoBytes(fd, bytes, byteOffset, byteCount, flags, inetAddress, port); 147 } 148 private native int sendtoBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException; 149 public native void setegid(int egid) throws ErrnoException; 150 public native void seteuid(int euid) throws ErrnoException; 151 public native void setgid(int gid) throws ErrnoException; 152 public native void setsockoptByte(FileDescriptor fd, int level, int option, int value) throws ErrnoException; 153 public native void setsockoptIfreq(FileDescriptor fd, int level, int option, String value) throws ErrnoException; 154 public native void setsockoptInt(FileDescriptor fd, int level, int option, int value) throws ErrnoException; 155 public native void setsockoptIpMreqn(FileDescriptor fd, int level, int option, int value) throws ErrnoException; 156 public native void setsockoptGroupReq(FileDescriptor fd, int level, int option, StructGroupReq value) throws ErrnoException; 157 public native void setsockoptLinger(FileDescriptor fd, int level, int option, StructLinger value) throws ErrnoException; 158 public native void setsockoptTimeval(FileDescriptor fd, int level, int option, StructTimeval value) throws ErrnoException; 159 public native void setuid(int uid) throws ErrnoException; 160 public native void shutdown(FileDescriptor fd, int how) throws ErrnoException; 161 public native FileDescriptor socket(int domain, int type, int protocol) throws ErrnoException; 162 public native StructStat stat(String path) throws ErrnoException; 163 public native StructStatFs statfs(String path) throws ErrnoException; 164 public native String strerror(int errno); 165 public native void symlink(String oldPath, String newPath) throws ErrnoException; 166 public native long sysconf(int name); 167 public native StructUtsname uname(); 168 public native int waitpid(int pid, MutableInt status, int options) throws ErrnoException; 169 public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException { 170 if (buffer.isDirect()) { 171 return writeBytes(fd, buffer, buffer.position(), buffer.remaining()); 172 } else { 173 return writeBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining()); 174 } 175 } 176 public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException { 177 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 178 return writeBytes(fd, bytes, byteOffset, byteCount); 179 } 180 private native int writeBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException; 181 public native int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException; 182 } 183
