How can I make a S3 bucket public (the amazon example policy doesn't work)?

Question

Amazon provides an example for Granting Permission to an Anonymous User as follows (see Example Cases for Amazon S3 Bucket Policies):

{
    \"Versio         


        

Answer 1

The following policy will make the entire bucket public :

{
  "Version":"2012-10-17",
  "Statement":[
    {
      "Sid":"AddPerm",
      "Effect":"Allow",
      "Principal": "*",
      "Action":["s3:GetObject"],
      "Resource":["arn:aws:s3:::examplebucket/*"]
    }
  ]
}

If you want a specific folder under that bucket to be public using Bucket policies , then you have to explicitly make that folder/prefix as public and then apply the bucket policy as follows :

{
  "Version":"2012-10-17",
  "Statement":[
    {
      "Sid":"AddPerm",
      "Effect":"Allow",
      "Principal": "*",
      "Action":["s3:GetObject"],
      "Resource":["arn:aws:s3:::examplebucket/images/*"]
    }
  ]
}

The above policy will allow public read to all of the objects under images , but you will not be able to access other objects inside the bucket.

Answer 2

Bucket policies do not apply files with other owners. So although I've given write access to a third party, the ownership remains them, and my bucket policy will not apply to those objects.