Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Examples See Also

GetBucketAcl

Important

End of support notice: Beginning October 1, 2025, Amazon S3 will stop returning DisplayName. Update your applications to use canonical IDs (unique identifier for Amazon accounts), Amazon account ID (12 digit identifier) or IAM ARNs (full resource naming) as a direct replacement of DisplayName.

Between July 15, 2025 and October 1, 2025, you will begin to see an increasing rate of missing DisplayName in the Owner object.

This change affects the following Amazon Regions: US East (N. Virginia) Region, US West (N. California) Region, US West (Oregon) Region, Asia Pacific (Singapore) Region, Asia Pacific (Sydney) Region, Asia Pacific (Tokyo) Region, Europe (Ireland) Region, and South America (São Paulo) Region.

Note

This operation is not supported for directory buckets.

This implementation of the GET action uses the acl subresource to return the access control list (ACL) of a bucket. To use GET to return the ACL of the bucket, you must have the READ_ACP access to the bucket. If READ_ACP permission is granted to the anonymous user, you can return the ACL of the bucket without using an authorization header.

When you use this API operation with an access point, provide the alias of the access point in place of the bucket name.

When you use this API operation with an Object Lambda access point, provide the alias of the Object Lambda access point in place of the bucket name. If the Object Lambda access point alias in a request is not valid, the error code InvalidAccessPointAliasError is returned. For more information about InvalidAccessPointAliasError, see List of Error Codes.

Note

If your bucket uses the bucket owner enforced setting for S3 Object Ownership, requests to read ACLs are still supported and return the bucket-owner-full-control ACL with the owner being the account that created the bucket. For more information, see Controlling object ownership and disabling ACLs in the Amazon S3 User Guide.

The following operations are related to GetBucketAcl:

ListObjects

Request Syntax


GET /?acl HTTP/1.1
Host: Bucket.s3.amazonaws.com
x-amz-expected-bucket-owner: ExpectedBucketOwner

URI Request Parameters

The request uses the following URI parameters.

Bucket

Specifies the S3 bucket whose ACL is being requested.

When you use this API operation with an access point, provide the alias of the access point in place of the bucket name.

Required: Yes

x-amz-expected-bucket-owner

The account ID of the expected bucket owner. If the account ID that you provide does not match the actual owner of the bucket, the request fails with the HTTP status code 403 Forbidden (access denied).

Request Body

The request does not have a request body.

Response Syntax


HTTP/1.1 200
<?xml version="1.0" encoding="UTF-8"?>
<AccessControlPolicy>
   <Owner>
      <DisplayName>string</DisplayName>
      <ID>string</ID>
   </Owner>
   <AccessControlList>
      <Grant>
         <Grantee>
            <DisplayName>string</DisplayName>
            <EmailAddress>string</EmailAddress>
            <ID>string</ID>
            <xsi:type>string</xsi:type>
            <URI>string</URI>
         </Grantee>
         <Permission>string</Permission>
      </Grant>
   </AccessControlList>
</AccessControlPolicy>

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in XML format by the service.

AccessControlPolicy

Root level tag for the AccessControlPolicy parameters.

Required: Yes

Grants

A list of grants.

Type: Array of Grant data types

Owner

Container for the bucket owner's display name and ID.

Type: Owner data type

Examples

Sample Request

The following request returns the ACL of the specified bucket.


GET ?acl HTTP/1.1
Host: bucket.s3.<Region>.amazonaws.com
Date: Wed, 28 Oct 2009 22:32:00 GMT
Authorization: authorization string

Sample Response


HTTP/1.1 200 OK
x-amz-id-2: eftixk72aD6Ap51TnqcoF8eFidJG9Z/2mkiDFu8yU9AS1ed4OpIszj7UDNEHGran
x-amz-request-id: 318BC8BC148832E5
Date: Wed, 28 Oct 2009 22:32:00 GMT
Last-Modified: Sun, 1 Jan 2006 12:00:00 GMT
Content-Length: 124
Content-Type: text/plain
Connection: close
Server: AmazonS3
<AccessControlPolicy>
  <Owner>
    <ID>75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a</ID>
    <DisplayName>CustomersName@amazon.com</DisplayName>
  </Owner>
  <AccessControlList>
    <Grant>
      <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
			xsi:type="CanonicalUser">
        <ID>75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a</ID>
        <DisplayName>CustomersName@amazon.com</DisplayName>
      </Grantee>
      <Permission>FULL_CONTROL</Permission>
    </Grant>
  </AccessControlList>
</AccessControlPolicy>