Posix.java revision 99a0c82619a88c6aea038757cf14090f5d33afeb 
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
17package libcore.io;
18
19import android.system.ErrnoException;
20import android.system.GaiException;
21import android.system.StructAddrinfo;
22import android.system.StructFlock;
23import android.system.StructGroupReq;
24import android.system.StructGroupSourceReq;
25import android.system.StructLinger;
26import android.system.StructPasswd;
27import android.system.StructPollfd;
28import android.system.StructStat;
29import android.system.StructStatVfs;
30import android.system.StructTimeval;
31import android.system.StructUcred;
32import android.system.StructUtsname;
33import android.util.MutableInt;
34import android.util.MutableLong;
35import java.io.FileDescriptor;
36import java.io.InterruptedIOException;
37import java.net.InetAddress;
38import java.net.InetSocketAddress;
39import java.net.SocketAddress;
40import java.net.SocketException;
41import java.nio.ByteBuffer;
42import java.nio.NioUtils;
43
44public final class Posix implements Os {
45    Posix() { }
46
47    public native FileDescriptor accept(FileDescriptor fd, InetSocketAddress peerAddress) throws ErrnoException, SocketException;
48    public native boolean access(String path, int mode) throws ErrnoException;
49    public native InetAddress[] android_getaddrinfo(String node, StructAddrinfo hints, int netId) throws GaiException;
50    public native void bind(FileDescriptor fd, InetAddress address, int port) throws ErrnoException, SocketException;
51    public native void chmod(String path, int mode) throws ErrnoException;
52    public native void chown(String path, int uid, int gid) throws ErrnoException;
53    public native void close(FileDescriptor fd) throws ErrnoException;
54    public native void connect(FileDescriptor fd, InetAddress address, int port) throws ErrnoException, SocketException;
55    public native FileDescriptor dup(FileDescriptor oldFd) throws ErrnoException;
56    public native FileDescriptor dup2(FileDescriptor oldFd, int newFd) throws ErrnoException;
57    public native String[] environ();
58    public native void execv(String filename, String[] argv) throws ErrnoException;
59    public native void execve(String filename, String[] argv, String[] envp) throws ErrnoException;
60    public native void fchmod(FileDescriptor fd, int mode) throws ErrnoException;
61    public native void fchown(FileDescriptor fd, int uid, int gid) throws ErrnoException;
62    public native int fcntlVoid(FileDescriptor fd, int cmd) throws ErrnoException;
63    public native int fcntlLong(FileDescriptor fd, int cmd, long arg) throws ErrnoException;
64    public native int fcntlFlock(FileDescriptor fd, int cmd, StructFlock arg) throws ErrnoException, InterruptedIOException;
65    public native void fdatasync(FileDescriptor fd) throws ErrnoException;
66    public native StructStat fstat(FileDescriptor fd) throws ErrnoException;
67    public native StructStatVfs fstatvfs(FileDescriptor fd) throws ErrnoException;
68    public native void fsync(FileDescriptor fd) throws ErrnoException;
69    public native void ftruncate(FileDescriptor fd, long length) throws ErrnoException;
70    public native String gai_strerror(int error);
71    public native int getegid();
72    public native int geteuid();
73    public native int getgid();
74    public native String getenv(String name);
75    public native String getnameinfo(InetAddress address, int flags) throws GaiException;
76    public native SocketAddress getpeername(FileDescriptor fd) throws ErrnoException;
77    public native int getpid();
78    public native int getppid();
79    public native StructPasswd getpwnam(String name) throws ErrnoException;
80    public native StructPasswd getpwuid(int uid) throws ErrnoException;
81    public native SocketAddress getsockname(FileDescriptor fd) throws ErrnoException;
82    public native int getsockoptByte(FileDescriptor fd, int level, int option) throws ErrnoException;
83    public native InetAddress getsockoptInAddr(FileDescriptor fd, int level, int option) throws ErrnoException;
84    public native int getsockoptInt(FileDescriptor fd, int level, int option) throws ErrnoException;
85    public native StructLinger getsockoptLinger(FileDescriptor fd, int level, int option) throws ErrnoException;
86    public native StructTimeval getsockoptTimeval(FileDescriptor fd, int level, int option) throws ErrnoException;
87    public native StructUcred getsockoptUcred(FileDescriptor fd, int level, int option) throws ErrnoException;
88    public native int gettid();
89    public native int getuid();
90    public native String if_indextoname(int index);
91    public native InetAddress inet_pton(int family, String address);
92    public native InetAddress ioctlInetAddress(FileDescriptor fd, int cmd, String interfaceName) throws ErrnoException;
93    public native int ioctlInt(FileDescriptor fd, int cmd, MutableInt arg) throws ErrnoException;
94    public native boolean isatty(FileDescriptor fd);
95    public native void kill(int pid, int signal) throws ErrnoException;
96    public native void lchown(String path, int uid, int gid) throws ErrnoException;
97    public native void link(String oldPath, String newPath) throws ErrnoException;
98    public native void listen(FileDescriptor fd, int backlog) throws ErrnoException;
99    public native long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException;
100    public native StructStat lstat(String path) throws ErrnoException;
101    public native void mincore(long address, long byteCount, byte[] vector) throws ErrnoException;
102    public native void mkdir(String path, int mode) throws ErrnoException;
103    public native void mkfifo(String path, int mode) throws ErrnoException;
104    public native void mlock(long address, long byteCount) throws ErrnoException;
105    public native long mmap(long address, long byteCount, int prot, int flags, FileDescriptor fd, long offset) throws ErrnoException;
106    public native void msync(long address, long byteCount, int flags) throws ErrnoException;
107    public native void munlock(long address, long byteCount) throws ErrnoException;
108    public native void munmap(long address, long byteCount) throws ErrnoException;
109    public native FileDescriptor open(String path, int flags, int mode) throws ErrnoException;
110    public native FileDescriptor[] pipe() throws ErrnoException;
111    public native int poll(StructPollfd[] fds, int timeoutMs) throws ErrnoException;
112    public native void posix_fallocate(FileDescriptor fd, long offset, long length) throws ErrnoException;
113    public native int prctl(int option, long arg2, long arg3, long arg4, long arg5) throws ErrnoException;
114    public int pread(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException, InterruptedIOException {
115        if (buffer.isDirect()) {
116            return preadBytes(fd, buffer, buffer.position(), buffer.remaining(), offset);
117        } else {
118            return preadBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset);
119        }
120    }
121    public int pread(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException {
122        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
123        return preadBytes(fd, bytes, byteOffset, byteCount, offset);
124    }
125    private native int preadBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException;
126    public int pwrite(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException, InterruptedIOException {
127        if (buffer.isDirect()) {
128            return pwriteBytes(fd, buffer, buffer.position(), buffer.remaining(), offset);
129        } else {
130            return pwriteBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset);
131        }
132    }
133    public int pwrite(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException {
134        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
135        return pwriteBytes(fd, bytes, byteOffset, byteCount, offset);
136    }
137    private native int pwriteBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException, InterruptedIOException;
138    public int read(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException, InterruptedIOException {
139        if (buffer.isDirect()) {
140            return readBytes(fd, buffer, buffer.position(), buffer.remaining());
141        } else {
142            return readBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining());
143        }
144    }
145    public int read(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException, InterruptedIOException {
146        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
147        return readBytes(fd, bytes, byteOffset, byteCount);
148    }
149    private native int readBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException, InterruptedIOException;
150    public native String readlink(String path) throws ErrnoException;
151    public native int readv(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException, InterruptedIOException;
152    public int recvfrom(FileDescriptor fd, ByteBuffer buffer, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException {
153        if (buffer.isDirect()) {
154            return recvfromBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, srcAddress);
155        } else {
156            return recvfromBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, srcAddress);
157        }
158    }
159    public int recvfrom(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException {
160        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
161        return recvfromBytes(fd, bytes, byteOffset, byteCount, flags, srcAddress);
162    }
163    private native int recvfromBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException;
164    public native void remove(String path) throws ErrnoException;
165    public native void rename(String oldPath, String newPath) throws ErrnoException;
166    public native long sendfile(FileDescriptor outFd, FileDescriptor inFd, MutableLong inOffset, long byteCount) throws ErrnoException;
167    public int sendto(FileDescriptor fd, ByteBuffer buffer, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException {
168        if (buffer.isDirect()) {
169            return sendtoBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, inetAddress, port);
170        } else {
171            return sendtoBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, inetAddress, port);
172        }
173    }
174    public int sendto(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException {
175        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
176        return sendtoBytes(fd, bytes, byteOffset, byteCount, flags, inetAddress, port);
177    }
178    private native int sendtoBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException;
179    public native void setegid(int egid) throws ErrnoException;
180    public native void setenv(String name, String value, boolean overwrite) throws ErrnoException;
181    public native void seteuid(int euid) throws ErrnoException;
182    public native void setgid(int gid) throws ErrnoException;
183    public native int setsid() throws ErrnoException;
184    public native void setsockoptByte(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
185    public native void setsockoptIfreq(FileDescriptor fd, int level, int option, String value) throws ErrnoException;
186    public native void setsockoptInt(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
187    public native void setsockoptIpMreqn(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
188    public native void setsockoptGroupReq(FileDescriptor fd, int level, int option, StructGroupReq value) throws ErrnoException;
189    public native void setsockoptGroupSourceReq(FileDescriptor fd, int level, int option, StructGroupSourceReq value) throws ErrnoException;
190    public native void setsockoptLinger(FileDescriptor fd, int level, int option, StructLinger value) throws ErrnoException;
191    public native void setsockoptTimeval(FileDescriptor fd, int level, int option, StructTimeval value) throws ErrnoException;
192    public native void setuid(int uid) throws ErrnoException;
193    public native void shutdown(FileDescriptor fd, int how) throws ErrnoException;
194    public native FileDescriptor socket(int domain, int type, int protocol) throws ErrnoException;
195    public native void socketpair(int domain, int type, int protocol, FileDescriptor fd1, FileDescriptor fd2) throws ErrnoException;
196    public native StructStat stat(String path) throws ErrnoException;
197    public native StructStatVfs statvfs(String path) throws ErrnoException;
198    public native String strerror(int errno);
199    public native String strsignal(int signal);
200    public native void symlink(String oldPath, String newPath) throws ErrnoException;
201    public native long sysconf(int name);
202    public native void tcdrain(FileDescriptor fd) throws ErrnoException;
203    public native void tcsendbreak(FileDescriptor fd, int duration) throws ErrnoException;
204    public int umask(int mask) {
205        if ((mask & 0777) != mask) {
206            throw new IllegalArgumentException("Invalid umask: " + mask);
207        }
208        return umaskImpl(mask);
209    }
210    private native int umaskImpl(int mask);
211    public native StructUtsname uname();
212    public native void unsetenv(String name) throws ErrnoException;
213    public native int waitpid(int pid, MutableInt status, int options) throws ErrnoException;
214    public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException, InterruptedIOException {
215        if (buffer.isDirect()) {
216            return writeBytes(fd, buffer, buffer.position(), buffer.remaining());
217        } else {
218            return writeBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining());
219        }
220    }
221    public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException, InterruptedIOException {
222        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
223        return writeBytes(fd, bytes, byteOffset, byteCount);
224    }
225    private native int writeBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException, InterruptedIOException;
226    public native int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException, InterruptedIOException;
227}
228