Posix.java revision 0568a63ba1086a78ffb4cff68dd2eac4f9908e13 
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.SocketAddress;
22import java.nio.ByteBuffer;
23import java.nio.NioUtils;
24import libcore.util.MutableInt;
25import libcore.util.MutableLong;
26
27public final class Posix implements Os {
28    Posix() { }
29
30    public native boolean access(String path, int mode) throws ErrnoException;
31    public native void chmod(String path, int mode) throws ErrnoException;
32    public native void close(FileDescriptor fd) throws ErrnoException;
33    public native String[] environ();
34    public native int fcntlVoid(FileDescriptor fd, int cmd) throws ErrnoException;
35    public native int fcntlLong(FileDescriptor fd, int cmd, long arg) throws ErrnoException;
36    public native int fcntlFlock(FileDescriptor fd, int cmd, StructFlock arg) throws ErrnoException;
37    public native void fdatasync(FileDescriptor fd) throws ErrnoException;
38    public native StructStat fstat(FileDescriptor fd) throws ErrnoException;
39    public native StructStatFs fstatfs(FileDescriptor fd) throws ErrnoException;
40    public native void fsync(FileDescriptor fd) throws ErrnoException;
41    public native void ftruncate(FileDescriptor fd, long length) throws ErrnoException;
42    public native String gai_strerror(int error);
43    public native String getenv(String name);
44    public native String getnameinfo(InetAddress address, int flags) throws GaiException;
45    public native SocketAddress getsockname(FileDescriptor fd) throws ErrnoException;
46    public native int getsockoptByte(FileDescriptor fd, int level, int option) throws ErrnoException;
47    public native InetAddress getsockoptInAddr(FileDescriptor fd, int level, int option) throws ErrnoException;
48    public native int getsockoptInt(FileDescriptor fd, int level, int option) throws ErrnoException;
49    public native StructLinger getsockoptLinger(FileDescriptor fd, int level, int option) throws ErrnoException;
50    public native StructTimeval getsockoptTimeval(FileDescriptor fd, int level, int option) throws ErrnoException;
51    public native String if_indextoname(int index);
52    public native InetAddress ioctlInetAddress(FileDescriptor fd, int cmd, String interfaceName) throws ErrnoException;
53    public native int ioctlInt(FileDescriptor fd, int cmd, MutableInt arg) throws ErrnoException;
54    public native boolean isatty(FileDescriptor fd);
55    public native void listen(FileDescriptor fd, int backlog) throws ErrnoException;
56    public native long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException;
57    public native void mincore(long address, long byteCount, byte[] vector) throws ErrnoException;
58    public native void mkdir(String path, int mode) throws ErrnoException;
59    public native void mlock(long address, long byteCount) throws ErrnoException;
60    public native long mmap(long address, long byteCount, int prot, int flags, FileDescriptor fd, long offset) throws ErrnoException;
61    public native void msync(long address, long byteCount, int flags) throws ErrnoException;
62    public native void munlock(long address, long byteCount) throws ErrnoException;
63    public native void munmap(long address, long byteCount) throws ErrnoException;
64    public native FileDescriptor open(String path, int flags, int mode) throws ErrnoException;
65    public native FileDescriptor[] pipe() throws ErrnoException;
66    public native StructStat lstat(String path) throws ErrnoException;
67    public int read(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
68        if (buffer.isDirect()) {
69            return readBytes(fd, buffer, buffer.position(), buffer.remaining());
70        } else {
71            return readBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining());
72        }
73    }
74    public int read(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
75        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
76        return readBytes(fd, bytes, byteOffset, byteCount);
77    }
78    private native int readBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException;
79    public native int readv(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException;
80    public native void remove(String path) throws ErrnoException;
81    public native void rename(String oldPath, String newPath) throws ErrnoException;
82    public native long sendfile(FileDescriptor outFd, FileDescriptor inFd, MutableLong inOffset, long byteCount) throws ErrnoException;
83    public native void setsockoptByte(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
84    public native void setsockoptIfreq(FileDescriptor fd, int level, int option, String value) throws ErrnoException;
85    public native void setsockoptInt(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
86    public native void setsockoptIpMreqn(FileDescriptor fd, int level, int option, int value) throws ErrnoException;
87    public native void setsockoptGroupReq(FileDescriptor fd, int level, int option, StructGroupReq value) throws ErrnoException;
88    public native void setsockoptLinger(FileDescriptor fd, int level, int option, StructLinger value) throws ErrnoException;
89    public native void setsockoptTimeval(FileDescriptor fd, int level, int option, StructTimeval value) throws ErrnoException;
90    public native void shutdown(FileDescriptor fd, int how) throws ErrnoException;
91    public native FileDescriptor socket(int domain, int type, int protocol) throws ErrnoException;
92    public native StructStat stat(String path) throws ErrnoException;
93    public native StructStatFs statfs(String path) throws ErrnoException;
94    public native String strerror(int errno);
95    public native void symlink(String oldPath, String newPath) throws ErrnoException;
96    public native long sysconf(int name);
97    public native StructUtsname uname() throws ErrnoException;
98    public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
99        if (buffer.isDirect()) {
100            return writeBytes(fd, buffer, buffer.position(), buffer.remaining());
101        } else {
102            return writeBytes(fd, NioUtils.unsafeArray(buffer), NioUtils.unsafeArrayOffset(buffer) + buffer.position(), buffer.remaining());
103        }
104    }
105    public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
106        // This indirection isn't strictly necessary, but ensures that our public interface is type safe.
107        return writeBytes(fd, bytes, byteOffset, byteCount);
108    }
109    private native int writeBytes(FileDescriptor fd, Object buffer, int offset, int byteCount) throws ErrnoException;
110    public native int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException;
111}
112