Method write

lib/internal/vfs/file_system.js:846–855

* Writes to a file descriptor asynchronously. * @param {number} fd The file descriptor * @param {Buffer} buffer The buffer to write from * @param {number} offset The offset in the buffer * @param {number} length The number of bytes to write * @param {number|null} position The position

(fd, buffer, offset, length, position, callback)

   * @param {Function} callback Callback (err, bytesWritten, buffer)
   */
  write(fd, buffer, offset, length, position, callback) {
    const vfd = getVirtualFd(fd);
    if (!vfd) {
      process.nextTick(callback, createEBADF('write'));
      return;
    }

    vfd.entry.write(buffer, offset, length, position)
      .then(({ bytesWritten }) => callback(null, bytesWritten, buffer), (err) => callback(err));
  }

  /**
   * Removes a file or directory asynchronously.