Posix.java revision e3b6fa2bf357f2712ab2ee9e8487f157595ea0c7 
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.nio.ByteBuffer;
24import java.nio.NioUtils;
25import libcore.util.MutableInt;
26import libcore.util.MutableLong;
27
28public 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