Posix.java revision 6c9b5377550a9649ed1532d1fcdfeba116c74ead 
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 java.io.FileDescriptor;
20import java.net.InetAddress;
21import java.net.InetSocketAddress;
22import java.net.SocketAddress;
23import java.net.SocketException;
24import java.nio.ByteBuffer;
25import java.nio.NioUtils;
26import libcore.util.MutableInt;
27import libcore.util.MutableLong;
28
29public 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 fchmod(FileDescriptor fd, int mode) throws ErrnoException;
43    public native void fchown(FileDescriptor fd, int uid, int gid) throws ErrnoException;
44    public native int fcntlVoid(FileDescriptor fd, int cmd) throws ErrnoException;
45    public native int fcntlLong(FileDescriptor fd, int cmd, long arg) throws ErrnoException;
46    public native int fcntlFlock(FileDescriptor fd, int cmd, StructFlock arg) throws ErrnoException;
47    public native void fdatasync(FileDescriptor fd) throws ErrnoException;
48    public native StructStat fstat(FileDescriptor fd) throws ErrnoException;
49    public native StructStatFs fstatfs(FileDescriptor fd) throws ErrnoException;
50    public native void fsync(FileDescriptor fd) throws ErrnoException;
51    public native void ftruncate(FileDescriptor fd, long length) throws ErrnoException;
52    public native String gai_strerror(int error);
53    public native InetAddress[] getaddrinfo(String node, StructAddrinfo hints) throws GaiException;
54    public native int getegid();
55    public native int geteuid();
56    public native int getgid();
57    public native String getenv(String name);
58    public native String getnameinfo(InetAddress address, int flags) throws GaiException;
59    public native int getpid();
60    public native int getppid();
61    public native StructPasswd getpwnam(String name) throws ErrnoException;
62    public native StructPasswd getpwuid(int uid) throws ErrnoException;
63    public native SocketAddress getsockname(FileDescriptor fd) throws ErrnoException;
64    public native int getsockoptByte(FileDescriptor fd, int level, int option) throws ErrnoException;
65    public native InetAddress getsockoptInAddr(FileDescriptor fd, int level, int option) throws ErrnoException;
66    public native int getsockoptInt(FileDescriptor fd, int level, int option) throws ErrnoException;
67    public native StructLinger getsockoptLinger(FileDescriptor fd, int level, int option) throws ErrnoException;
68    public native StructTimeval getsockoptTimeval(FileDescriptor fd, int level, int option) throws ErrnoException;
69    public native int getuid();
70    public native String if_indextoname(int index);
71    public native InetAddress inet_pton(int family, String address);
72    public native InetAddress ioctlInetAddress(FileDescriptor fd, int cmd, String interfaceName) throws ErrnoException;
73    public native int ioctlInt(FileDescriptor fd, int cmd, MutableInt arg) throws ErrnoException;
74    public native boolean isatty(FileDescriptor fd);
75    public native void kill(int pid, int signal) throws ErrnoException;
76    public native void lchown(String path, int uid, int gid) throws ErrnoException;
77    public native void listen(FileDescriptor fd, int backlog) throws ErrnoException;
78    public native long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException;
79    public native StructStat lstat(String path) throws ErrnoException;
80    public native void mincore(long address, long byteCount, byte[] vector) throws ErrnoException;
81    public native void mkdir(String path, int mode) throws ErrnoException;
82    public native void mlock(long address, long byteCount) throws ErrnoException;
83    public native long mmap(long address, long byteCount, int prot, int flags, FileDescriptor fd, long offset) throws ErrnoException;
84    public native void msync(long address, long byteCount, int flags) throws ErrnoException;
85    public native void munlock(long address, long byteCount) throws ErrnoException;
86    public native void munmap(long address, long byteCount) throws ErrnoException;
87    public native FileDescriptor open(String path, int flags, int mode) throws ErrnoException;
88    public native FileDescriptor[] pipe() throws ErrnoException;
89    public native int poll(StructPollfd[] fds, int timeoutMs) throws ErrnoException;
90    public int pread(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException {
91        if (buffer.isDirect()) {
92            return preadBytes(fd, buffer, buffer.position(), buffer.remaining(), offset);
93        } else {
94            return preadBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset);
95        }
96    }
97    public int pread(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException {
98        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
99        return preadBytes(fd, bytes, byteOffset, byteCount, offset);
100    }
101    private native int preadBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException;
102    public int pwrite(FileDescriptor fd, ByteBuffer buffer, long offset) throws ErrnoException {
103        if (buffer.isDirect()) {
104            return pwriteBytes(fd, buffer, buffer.position(), buffer.remaining(), offset);
105        } else {
106            return pwriteBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), offset);
107        }
108    }
109    public int pwrite(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, long offset) throws ErrnoException {
110        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
111        return pwriteBytes(fd, bytes, byteOffset, byteCount, offset);
112    }
113    private native int pwriteBytes(FileDescriptor fd, Object buffer, int bufferOffset, int byteCount, long offset) throws ErrnoException;
114    public int read(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
115        if (buffer.isDirect()) {
116            return readBytes(fd, buffer, buffer.position(), buffer.remaining());
117        } else {
118            return readBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining());
119        }
120    }
121    public int read(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
122        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
123        return readBytes(fd, bytes, byteOffset, byteCount);
124    }
125    private native int readBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException;
126    public native int readv(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException;
127    public int recvfrom(FileDescriptor fd, ByteBuffer buffer, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException {
128        if (buffer.isDirect()) {
129            return recvfromBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, srcAddress);
130        } else {
131            return recvfromBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, srcAddress);
132        }
133    }
134    public int recvfrom(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException {
135        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
136        return recvfromBytes(fd, bytes, byteOffset, byteCount, flags, srcAddress);
137    }
138    private native int recvfromBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetSocketAddress srcAddress) throws ErrnoException, SocketException;
139    public native void remove(String path) throws ErrnoException;
140    public native void rename(String oldPath, String newPath) throws ErrnoException;
141    public native long sendfile(FileDescriptor outFd, FileDescriptor inFd, MutableLong inOffset, long byteCount) throws ErrnoException;
142    public int sendto(FileDescriptor fd, ByteBuffer buffer, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException {
143        if (buffer.isDirect()) {
144            return sendtoBytes(fd, buffer, buffer.position(), buffer.remaining(), flags, inetAddress, port);
145        } else {
146            return sendtoBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining(), flags, inetAddress, port);
147        }
148    }
149    public int sendto(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException {
150        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
151        return sendtoBytes(fd, bytes, byteOffset, byteCount, flags, inetAddress, port);
152    }
153    private native int sendtoBytes(FileDescriptor fd, Object buffer, int byteOffset, int byteCount, int flags, InetAddress inetAddress, int port) throws ErrnoException, SocketException;
154    public native void setegid(int egid) throws ErrnoException;
155    public native void seteuid(int euid) throws ErrnoException;
156    public native void setgid(int gid) throws ErrnoException;
157    public native int setsid() throws ErrnoException;
158    public native void setsockoptByte(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
159    public native void setsockoptIfreq(FileDescriptor fd, int level, int option, String value) throws ErrnoException;
160    public native void setsockoptInt(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
161    public native void setsockoptIpMreqn(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
162    public native void setsockoptGroupReq(FileDescriptor fd, int level, int option, StructGroupReq value) throws ErrnoException;
163    public native void setsockoptLinger(FileDescriptor fd, int level, int option, StructLinger value) throws ErrnoException;
164    public native void setsockoptTimeval(FileDescriptor fd, int level, int option, StructTimeval value) throws ErrnoException;
165    public native void setuid(int uid) throws ErrnoException;
166    public native void shutdown(FileDescriptor fd, int how) throws ErrnoException;
167    public native FileDescriptor socket(int domain, int type, int protocol) throws ErrnoException;
168    public native StructStat stat(String path) throws ErrnoException;
169    public native StructStatFs statfs(String path) throws ErrnoException;
170    public native String strerror(int errno);
171    public native void symlink(String oldPath, String newPath) throws ErrnoException;
172    public native long sysconf(int name);
173    public native void tcdrain(FileDescriptor fd) throws ErrnoException;
174    public native int umask(int mask);
175    public native StructUtsname uname();
176    public native int waitpid(int pid, MutableInt status, int options) throws ErrnoException;
177    public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
178        if (buffer.isDirect()) {
179            return writeBytes(fd, buffer, buffer.position(), buffer.remaining());
180        } else {
181            return writeBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining());
182        }
183    }
184    public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
185        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
186        return writeBytes(fd, bytes, byteOffset, byteCount);
187    }
188    private native int writeBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException;
189    public native int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException;
190}
191