I am trying to run
String command = "su -c 'busybox ls /data'";
p = Runtime.getRuntime().exec(command);
in my app, but it seems like the syntax is somehow wrong. I have no problem running it from the terminal emulator app on the phone, though, so I just can't understand why it is not working when called from within my app.
Any help is deeply appreciated!
SOLUTION FOUND! Thanks to the link suggested by onit here. See the code below: for superuser shell commands to work properly, you first need to create a superuser shell and assign it to a process, then write and read on it's input and output streams respectively.
Process p = Runtime.getRuntime().exec(new String[]{"su", "-c", "system/bin/sh"});
DataOutputStream stdin = new DataOutputStream(p.getOutputStream());
//from here all commands are executed with su permissions
stdin.writeBytes("ls /data\n"); // \n executes the command
InputStream stdout = p.getInputStream();
byte[] buffer = new byte[BUFF_LEN];
int read;
String out = new String();
//read method will wait forever if there is nothing in the stream
//so we need to read it in another way than while((read=stdout.read(buffer))>0)
while(true){
read = stdout.read(buffer);
out += new String(buffer, 0, read);
if(read<BUFF_LEN){
//we have read everything
break;
}
}
//do something with the output
Use the function below:
public void shellCommandRunAsRoot(String Command)
{
try
{
Process RunProcess= Runtime.getRuntime().exec("su");
DataOutputStream os;
os = new DataOutputStream(RunProcess.getOutputStream());
os.writeBytes(cmds+"\n");
os.writeBytes("exit+\n");
os.flush();
}
catch (IOException e)
{
// Handle Exception
}
}
Usage:
shellCommandRunAsRoot("pkill firefox");
