| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.term; |
| |
| import java.io.FileDescriptor; |
| |
| /** |
| * Utility methods for creating and managing a subprocess. |
| * <p> |
| * Note: The native methods access a package-private |
| * java.io.FileDescriptor field to get and set the raw Linux |
| * file descriptor. This might break if the implementation of |
| * java.io.FileDescriptor is changed. |
| */ |
| |
| public class Exec |
| { |
| static { |
| System.loadLibrary("term"); |
| } |
| |
| /** |
| * Create a subprocess. Differs from java.lang.ProcessBuilder in |
| * that a pty is used to communicate with the subprocess. |
| * <p> |
| * Callers are responsible for calling Exec.close() on the returned |
| * file descriptor. |
| * |
| * @param cmd The command to execute |
| * @param arg0 The first argument to the command, may be null |
| * @param arg1 the second argument to the command, may be null |
| * @param processId A one-element array to which the process ID of the |
| * started process will be written. |
| * @return the file descriptor of the started process. |
| * |
| */ |
| public static native FileDescriptor createSubprocess( |
| String cmd, String arg0, String arg1, int[] processId); |
| |
| /** |
| * Set the widow size for a given pty. Allows programs |
| * connected to the pty learn how large their screen is. |
| */ |
| public static native void setPtyWindowSize(FileDescriptor fd, |
| int row, int col, int xpixel, int ypixel); |
| |
| /** |
| * Causes the calling thread to wait for the process associated with the |
| * receiver to finish executing. |
| * |
| * @return The exit value of the Process being waited on |
| * |
| */ |
| public static native int waitFor(int processId); |
| |
| /** |
| * Close a given file descriptor. |
| */ |
| public static native void close(FileDescriptor fd); |
| } |
| |