title: S3FS: Allowing permission for specific user or group
body: <p>I would like to mount filesystem with s3 bucket using S3FS.</p>
  
  <p>I want, that different users from specific group have access to the mounted folder and can read/write access.</p>
  
  <p>When I use "allow_other" option, all users have full access to the mounted folder. For example:</p>
  
  <pre><code>s3fs bucket-name /home/folder-name/ -o passwd_file=./.passwd-s3fs -o allow_other,uid=1000,gid=1001
  </code></pre>
  
  <p>But I need, that only users from specific group have access to the mounted folder (not all users).</p>
  
  <p>Is it possible?</p>