content: package com.termux.terminal;
  
  /**
   * Native methods for creating and managing pseudoterminal subprocesses. C code is in jni/termux.c.
   */
  final class JNI {
  
      static {
          System.loadLibrary("termux");
      }
  
      /**
       * Create a subprocess. Differs from {@link ProcessBuilder} in that a pseudoterminal is used to communicate with the
       * subprocess.
       * <p/>
       * Callers are responsible for calling {@link #close(int)} on the returned file descriptor.
       *
       * @param cmd       The command to execute
       * @param cwd       The current working directory for the executed command
       * @param args      An array of arguments to the command
       * @param envVars   An array of strings of the form "VAR=value" to be added to the environment of the process
       * @param processId A one-element array to which the process ID of the started process will be written.
       * @return the file descriptor resulting from opening /dev/ptmx master device. The sub process will have opened the
       * slave device counterpart (/dev/pts/$N) and have it as stdint, stdout and stderr.
       */
      public static native int createSubprocess(String cmd, String cwd, String[] args, String[] envVars, int[] processId, int rows, int columns);
  
      /** Set the window size for a given pty, which allows connected programs to learn how large their screen is. */
      public static native void setPtyWindowSize(int fd, int rows, int cols);
  
      /**
       * Causes the calling thread to wait for the process associated with the receiver to finish executing.
       *
       * @return if >= 0, the exit status of the process. If < 0, the signal causing the process to stop negated.
       */
      public static native int waitFor(int processId);
  
      /** Close a file descriptor through the close(2) system call. */
      public static native void close(int fileDescriptor);
  
  }
  