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How to use writeString method of sun.tools.attach.LinuxVirtualMachine class

Best Powermock code snippet using sun.tools.attach.LinuxVirtualMachine.writeString

Source:LinuxVirtualMachine.java

...154        IOException ioe = null;155        // connected - write request156        // <ver> <cmd> <args...>157        try {158            writeString(s, PROTOCOL_VERSION);159            writeString(s, cmd);160            for (int i=0; i<3; i++) {161                if (i < args.length && args[i] != null) {162                    writeString(s, (String)args[i]);163                } else {164                    writeString(s, "");165                }166            }167        } catch (IOException x) {168            ioe = x;169        }170        // Create an input stream to read reply171        SocketInputStream sis = new SocketInputStream(s);172        // Read the command completion status173        int completionStatus;174        try {175            completionStatus = readInt(sis);176        } catch (IOException x) {177            sis.close();178            if (ioe != null) {179                throw ioe;180            } else {181                throw x;182            }183        }184        if (completionStatus != 0) {185            // read from the stream and use that as the error message186            String message = readErrorMessage(sis);187            sis.close();188            // In the event of a protocol mismatch then the target VM189            // returns a known error so that we can throw a reasonable190            // error.191            if (completionStatus == ATTACH_ERROR_BADVERSION) {192                throw new IOException("Protocol mismatch with target VM");193            }194            // Special-case the "load" command so that the right exception is195            // thrown.196            if (cmd.equals("load")) {197                throw new AgentLoadException("Failed to load agent library");198            } else {199                if (message == null) {200                    throw new AttachOperationFailedException("Command failed in target VM");201                } else {202                    throw new AttachOperationFailedException(message);203                }204            }205        }206        // Return the input stream so that the command output can be read207        return sis;208    }209    /*210     * InputStream for the socket connection to get target VM211     */212    private class SocketInputStream extends InputStream {213        int s;214        public SocketInputStream(int s) {215            this.s = s;216        }217        public synchronized int read() throws IOException {218            byte b[] = new byte[1];219            int n = this.read(b, 0, 1);220            if (n == 1) {221                return b[0] & 0xff;222            } else {223                return -1;224            }225        }226        public synchronized int read(byte[] bs, int off, int len) throws IOException {227            if ((off < 0) || (off > bs.length) || (len < 0) ||228                ((off + len) > bs.length) || ((off + len) < 0)) {229                throw new IndexOutOfBoundsException();230            } else if (len == 0)231                return 0;232            return LinuxVirtualMachine.read(s, bs, off, len);233        }234        public void close() throws IOException {235            LinuxVirtualMachine.close(s);236        }237    }238    // Return the socket file for the given process.239    private String findSocketFile(int pid) {240        File f = new File(tmpdir, ".java_pid" + pid);241        if (!f.exists()) {242            return null;243        }244        return f.getPath();245    }246    // On Solaris/Linux a simple handshake is used to start the attach mechanism247    // if not already started. The client creates a .attach_pid<pid> file in the248    // target VM's working directory (or temp directory), and the SIGQUIT handler249    // checks for the file.250    private File createAttachFile(int pid) throws IOException {251        String fn = ".attach_pid" + pid;252        String path = "/proc/" + pid + "/cwd/" + fn;253        File f = new File(path);254        try {255            f.createNewFile();256        } catch (IOException x) {257            f = new File(tmpdir, fn);258            f.createNewFile();259        }260        return f;261    }262    /*263     * Write/sends the given to the target VM. String is transmitted in264     * UTF-8 encoding.265     */266    private void writeString(int fd, String s) throws IOException {267        if (s.length() > 0) {268            byte b[];269            try {270                b = s.getBytes("UTF-8");271            } catch (java.io.UnsupportedEncodingException x) {272                throw new InternalError(x);273            }274            LinuxVirtualMachine.write(fd, b, 0, b.length);275        }276        byte b[] = new byte[1];277        b[0] = 0;278        write(fd, b, 0, 1);279    }280    //-- native methods...

writeString

Using AI Code Generation

1import sun.tools.attach.LinuxVirtualMachine;2import java.io.IOException;3import java.io.File;4public class LinuxVirtualMachineWriteStringTest {5    public static void main(String[] args) throws IOException {6        LinuxVirtualMachine vm = LinuxVirtualMachine.getVirtualMachine(1);7        vm.writeString(new File("/tmp/test.txt"), "Hello World!");8        vm.detach();9    }10}

writeString

Using AI Code Generation

1import sun.tools.attach.LinuxVirtualMachine;2import java.io.File;3import java.io.FileWriter;4import java.io.IOException;5public class WriteStringToFile {6    public static void main(String[] args) throws Exception {7        String pid = args[0];8        String str = args[1];9        String filename = args[2];10        LinuxVirtualMachine vm = LinuxVirtualMachine.attach(pid);11        vm.writeString(str, filename);12        vm.detach();13    }14}15import sun.tools.attach.WindowsVirtualMachine;16import java.io.File;17import java.io.FileWriter;18import java.io.IOException;19public class WriteStringToFile {20    public static void main(String[] args) throws Exception {21        String pid = args[0];22        String str = args[1];23        String filename = args[2];24        WindowsVirtualMachine vm = WindowsVirtualMachine.attach(pid);25        vm.writeString(str, filename);26        vm.detach();27    }28}29import sun.tools.attach.BsdVirtualMachine;30import java.io.File;31import java.io.FileWriter;32import java.io.IOException;33public class WriteStringToFile {34    public static void main(String[] args) throws Exception {35        String pid = args[0];36        String str = args[1];37        String filename = args[2];38        BsdVirtualMachine vm = BsdVirtualMachine.attach(pid);39        vm.writeString(str, filename);40        vm.detach();41    }42}43import sun.tools.attach.SolarisVirtualMachine;44import java.io.File;45import java.io.FileWriter;46import java.io.IOException;47public class WriteStringToFile {48    public static void main(String[] args) throws Exception {49        String pid = args[0];50        String str = args[1];51        String filename = args[2];52        SolarisVirtualMachine vm = SolarisVirtualMachine.attach(pid);53        vm.writeString(str, filename);54        vm.detach();55    }56}57import sun.tools.attach.DarwinVirtualMachine;58import java

writeString

Using AI Code Generation

1import java.io.IOException;2import sun.tools.attach.*;3public class WriteString {4    public static void main(String[] args) throws IOException {5        if (args.length != 3) {6            System.out.println("Usage: java -cp . WriteString <pid> <filename> <string>");7            return;8        }9        LinuxVirtualMachine vm = LinuxVirtualMachine.attach(Integer.parseInt(args[0]));10        vm.writeString(args[1], args[2]);11        vm.detach();12    }13}14public void writeString(String filename, String contents) throws IOException {15    if (filename == null || contents == null) {16        throw new NullPointerException();17    }18    if (filename.length() == 0) {19        throw new IllegalArgumentException("filename cannot be empty");20    }21    if (contents.length() == 0) {22        throw new IllegalArgumentException("contents cannot be empty");23    }24    if (filename.charAt(0) != '/') {25        throw new IllegalArgumentException("filename must be an absolute path");26    }27    if (filename.indexOf('\0') != -1) {28        throw new IllegalArgumentException("filename cannot contain a null character");29    }30    if (contents.indexOf('\0') != -1) {31        throw new IllegalArgumentException("contents cannot contain a null character");32    }33    File file = new File(filename);34    File dir = file.getParentFile();35    if (dir != null && !dir.exists()) {36        if (!dir.mkdirs()) {37            throw new IOException("Unable to create directory: " + dir);38        }39    }

writeString

Using AI Code Generation

1import sun.tools.attach.*;2import java.io.IOException;3import java.util.List;4public class WriteFile {5    public static void main(String[] args) throws Exception {6        if (args.length != 3) {7            System.out.println("Usage: java -cp $JAVA_HOME/lib/tools.jar:. WriteFile <pid> <filename> <content>");8            System.exit(1);9        }10        String pid = args[0];11        String filename = args[1];12        String content = args[2];13        LinuxVirtualMachine lvm = LinuxVirtualMachine.attach(Integer.parseInt(pid));14        lvm.writeString(filename, content);15        lvm.detach();16    }17}

writeString

Using AI Code Generation

1import java.io.*;2import java.lang.reflect.*;3import java.nio.file.*;4import java.util.*;5import java.util.stream.*;6public class WriteStringToStdin {7    public static void main(String[] args) throws Exception {8        if (args.length != 2) {9            System.err.println("Usage: WriteStringToStdin <pid> <string>");10            System.exit(1);11        }12        int pid = Integer.parseInt(args[0]);13        String str = args[1];14        Path tmpDir = Files.createTempDirectory("attach");15        String tmpDirPath = tmpDir.toString();16        String tmpFile = tmpDirPath + "/tmp";17        String libPath = getLibPath(tmpDirPath);18        String javaHome = System.getProperty("java.home");19        String attachPath = javaHome + "/lib/libattach.so";20        String agentPath = javaHome + "/lib/libinstrument.so";21        String agentArgs = "tmpfile=" + tmpFile;22        String[] cmd = new String[] {23                "-cp", System.getProperty("java.class.path"),24                WriteStringToStdin.class.getName(),25                String.valueOf(pid),26        };27        ProcessBuilder pb = new ProcessBuilder(cmd);28        pb.inheritIO();29        Process p = pb.start();30        p.waitFor();31        System.exit(p.exitValue());32    }33    private static String getLibPath(String tmpDirPath) {34        String osName = System.getProperty("os.name");35        String arch = System.getProperty("os.arch");36        String libPath = null;37        if (osName.equals("Linux")) {38            if (arch.equals("amd64")) {39                libPath = tmpDirPath + ":/lib64:/usr/lib64";40            } else {41                libPath = tmpDirPath + ":/lib:/usr/lib";42            }43        } else if (osName.equals("SunOS")) {44            if (arch.equals("amd64")) {45                libPath = tmpDirPath + ":/usr/lib/amd64";46            } else {

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