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.net.SocketException; 24 import java.nio.ByteBuffer; 25 import java.nio.NioUtils; 26 import libcore.util.MutableInt; 27 import libcore.util.MutableLong; 28 29 public final class Posix implements Os { 30 Posix() { } 31 32 public native FileDescriptor accept(FileDescriptor fd, InetSocketAddress peerAddress) throws ErrnoException, SocketException; 33 public native boolean access(String path, int mode) throws ErrnoException; 34 public native void bind(FileDescriptor fd, InetAddress address, int port) throws ErrnoException, SocketException; 35 public native void chmod(String path, int mode) throws ErrnoException; 36 public native void chown(String path, int uid, int gid) throws ErrnoException; 37 public native void close(FileDescriptor fd) throws ErrnoException; 38 public native void connect(FileDescriptor fd, InetAddress address, int port) throws ErrnoException, SocketException; 39 public native FileDescriptor dup(FileDescriptor oldFd) throws ErrnoException; 40 public native FileDescriptor dup2(FileDescriptor oldFd, int newFd) throws ErrnoException; 41 public native String[] environ(); 42 public native void execv(String filename, String[] argv) throws ErrnoException; 43 public native void execve(String filename, String[] argv, String[] envp) throws ErrnoException; 44 public native void fchmod(FileDescriptor fd, int mode) throws ErrnoException; 45 public native void fchown(FileDescriptor fd, int uid, int gid) throws ErrnoException; 46 public native int fcntlVoid(FileDescriptor fd, int cmd) throws ErrnoException; 47 public native int fcntlLong(FileDescriptor fd, int cmd, long arg) throws ErrnoException; 48 public native int fcntlFlock(FileDescriptor fd, int cmd, StructFlock arg) throws ErrnoException; 49 public native void fdatasync(FileDescriptor fd) throws ErrnoException; 50 public native StructStat fstat(FileDescriptor fd) throws ErrnoException; 51 public native StructStatFs fstatfs(FileDescriptor fd) throws ErrnoException; 52 public native void fsync(FileDescriptor fd) throws ErrnoException; 53 public native void ftruncate(FileDescriptor fd, long length) throws ErrnoException; 54 public native String gai_strerror(int error); 55 public native InetAddress[] getaddrinfo(String node, StructAddrinfo hints) throws GaiException; 56 public native int getegid(); 57 public native int geteuid(); 58 public native int getgid(); 59 public native String getenv(String name); 60 public native String getnameinfo(InetAddress address, int flags) throws GaiException; 61 public native SocketAddress getpeername(FileDescriptor fd) throws ErrnoException; 62 public native int getpid(); 63 public native int getppid(); 64 public native StructPasswd getpwnam(String name) throws ErrnoException; 65 public native StructPasswd getpwuid(int uid) throws ErrnoException; 66 public native SocketAddress getsockname(FileDescriptor fd) throws ErrnoException; 67 public native int getsockoptByte(FileDescriptor fd, int level, int option) throws ErrnoException; 68 public native InetAddress getsockoptInAddr(FileDescriptor fd, int level, int option) throws ErrnoException; 69 public native int getsockoptInt(FileDescriptor fd, int level, int option) throws ErrnoException; 70 public native StructLinger getsockoptLinger(FileDescriptor fd, int level, int option) throws ErrnoException; 71 public native StructTimeval getsockoptTimeval(FileDescriptor fd, int level, int option) throws ErrnoException; 72 public native StructUcred getsockoptUcred(FileDescriptor fd, int level, int option) throws ErrnoException; 73 public native int getuid(); 74 public native String if_indextoname(int index); 75 public native InetAddress inet_pton(int family, String address); 76 public native InetAddress ioctlInetAddress(FileDescriptor fd, int cmd, String interfaceName) throws ErrnoException; 77 public native int ioctlInt(FileDescriptor fd, int cmd, MutableInt arg) throws ErrnoException; 78 public native boolean isatty(FileDescriptor fd); 79 public native void kill(int pid, int signal) throws ErrnoException; 80 public native void lchown(String path, int uid, int gid) throws ErrnoException; 81 public native void listen(FileDescriptor fd, int backlog) throws ErrnoException; 82 public native long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException; 83 public native StructStat lstat(String path) throws ErrnoException; 84 public native void mincore(long address, long byteCount, byte[] vector) throws ErrnoException; 85 public native void mkdir(String path, int mode) throws ErrnoException; 86 public native void mlock(long address, long byteCount) throws ErrnoException; 87 public native long mmap(long address, long byteCount, int prot, int flags, FileDescriptor fd, long offset) throws ErrnoException; 88 public native void msync(long address, long byteCount, int flags) throws ErrnoException; 89 public native void munlock(long address, long byteCount) throws ErrnoException; 90 public native void munmap(long address, long byteCount) throws ErrnoException; 91 public native FileDescriptor open(String path, int flags, int mode) throws ErrnoException; 92 public native FileDescriptor[] pipe() throws ErrnoException; 93 public native int poll(StructPollfd[] fds, int timeoutMs) throws ErrnoException; 94 public int pread(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException { 95 if (buffer.isDirect()) { 96 return preadBytes(fd, buffer, buffer.position(), buffer.remaining(), offset); 97 } else { 98 return preadBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset); 99 } 100 } 101 public int pread(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException { 102 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 103 return preadBytes(fd, bytes, byteOffset, byteCount, offset); 104 } 105 private native int preadBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException; 106 public int pwrite(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException { 107 if (buffer.isDirect()) { 108 return pwriteBytes(fd, buffer, buffer.position(), buffer.remaining(), offset); 109 } else { 110 return pwriteBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset); 111 } 112 } 113 public int pwrite(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException { 114 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 115 return pwriteBytes(fd, bytes, byteOffset, byteCount, offset); 116 } 117 private native int pwriteBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException; 118 public int read(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException { 119 if (buffer.isDirect()) { 120 return readBytes(fd, buffer, buffer.position(), buffer.remaining()); 121 } else { 122 return readBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining()); 123 } 124 } 125 public int read(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException { 126 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 127 return readBytes(fd, bytes, byteOffset, byteCount); 128 } 129 private native int readBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException; 130 public native int readv(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException; 131 public int recvfrom(FileDescriptor fd, ByteBuffer buffer, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException { 132 if (buffer.isDirect()) { 133 return recvfromBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, srcAddress); 134 } else { 135 return recvfromBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, srcAddress); 136 } 137 } 138 public int recvfrom(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException { 139 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 140 return recvfromBytes(fd, bytes, byteOffset, byteCount, flags, srcAddress); 141 } 142 private native int recvfromBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException; 143 public native void remove(String path) throws ErrnoException; 144 public native void rename(String oldPath, String newPath) throws ErrnoException; 145 public native long sendfile(FileDescriptor outFd, FileDescriptor inFd, MutableLong inOffset, long byteCount) throws ErrnoException; 146 public int sendto(FileDescriptor fd, ByteBuffer buffer, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException { 147 if (buffer.isDirect()) { 148 return sendtoBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, inetAddress, port); 149 } else { 150 return sendtoBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, inetAddress, port); 151 } 152 } 153 public int sendto(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException { 154 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 155 return sendtoBytes(fd, bytes, byteOffset, byteCount, flags, inetAddress, port); 156 } 157 private native int sendtoBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException; 158 public native void setegid(int egid) throws ErrnoException; 159 public native void setenv(String name, String value, boolean overwrite) throws ErrnoException; 160 public native void seteuid(int euid) throws ErrnoException; 161 public native void setgid(int gid) throws ErrnoException; 162 public native int setsid() throws ErrnoException; 163 public native void setsockoptByte(FileDescriptor fd, int level, int option, int value) throws ErrnoException; 164 public native void setsockoptIfreq(FileDescriptor fd, int level, int option, String value) throws ErrnoException; 165 public native void setsockoptInt(FileDescriptor fd, int level, int option, int value) throws ErrnoException; 166 public native void setsockoptIpMreqn(FileDescriptor fd, int level, int option, int value) throws ErrnoException; 167 public native void setsockoptGroupReq(FileDescriptor fd, int level, int option, StructGroupReq value) throws ErrnoException; 168 public native void setsockoptLinger(FileDescriptor fd, int level, int option, StructLinger value) throws ErrnoException; 169 public native void setsockoptTimeval(FileDescriptor fd, int level, int option, StructTimeval value) throws ErrnoException; 170 public native void setuid(int uid) throws ErrnoException; 171 public native void shutdown(FileDescriptor fd, int how) throws ErrnoException; 172 public native FileDescriptor socket(int domain, int type, int protocol) throws ErrnoException; 173 public native void socketpair(int domain, int type, int protocol, FileDescriptor fd1, FileDescriptor fd2) throws ErrnoException; 174 public native StructStat stat(String path) throws ErrnoException; 175 public native StructStatFs statfs(String path) throws ErrnoException; 176 public native String strerror(int errno); 177 public native String strsignal(int signal); 178 public native void symlink(String oldPath, String newPath) throws ErrnoException; 179 public native long sysconf(int name); 180 public native void tcdrain(FileDescriptor fd) throws ErrnoException; 181 public native void tcsendbreak(FileDescriptor fd, int duration) throws ErrnoException; 182 public int umask(int mask) { 183 if ((mask & 0777) != mask) { 184 throw new IllegalArgumentException("Invalid umask: " + mask); 185 } 186 return umaskImpl(mask); 187 } 188 private native int umaskImpl(int mask); 189 public native StructUtsname uname(); 190 public native void unsetenv(String name) throws ErrnoException; 191 public native int waitpid(int pid, MutableInt status, int options) throws ErrnoException; 192 public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException { 193 if (buffer.isDirect()) { 194 return writeBytes(fd, buffer, buffer.position(), buffer.remaining()); 195 } else { 196 return writeBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining()); 197 } 198 } 199 public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException { 200 // This indirection isn't strictly necessary, but ensures that our public interface is type safe. 201 return writeBytes(fd, bytes, byteOffset, byteCount); 202 } 203 private native int writeBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException; 204 public native int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException; 205 } 206
