PerBucketPolicy

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListAllMyBuckets",
        "s3:GetBucketLocation"
      ],
      "Resource": "arn:aws:s3:::*"
    },
    {
      "Effect": "Allow",
      "Action": "*",
      "Resource": [
        "arn:aws:s3:::${aws:username}",
        "arn:aws:s3:::${aws:username}/*"
      ]
    }
  ]
}