PutBucketAcl - Amazon Simple Storage Service (original) (raw)

Important

End of support notice: Beginning October 1, 2025, Amazon S3 will discontinue support for creating new Email Grantee Access Control Lists (ACL). Email Grantee ACLs created prior to this date will continue to work and remain accessible through the AWS Management Console, Command Line Interface (CLI), SDKs, and REST API. However, you will no longer be able to create new Email Grantee ACLs.

Between July 1, 2025 and October 1, 2025, you will begin to see an increasing rate of HTTP 405 errors for requests to Amazon S3 when attempting to create new Email Grantee ACLs.

This change affects the following AWS 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.

Sets the permissions on an existing bucket using access control lists (ACL). For more information, see Using ACLs. To set the ACL of a bucket, you must have the WRITE_ACP permission.

You can use one of the following two ways to set a bucket's permissions:

• Specify the ACL in the request body
• Specify permissions using request headers

Note

You cannot specify access permission using both the body and the request headers.

Depending on your application needs, you may choose to set the ACL on a bucket using either the request body or the headers. For example, if you have an existing application that updates a bucket ACL using the request body, then you can continue to use that approach.

Important

If your bucket uses the bucket owner enforced setting for S3 Object Ownership, ACLs are disabled and no longer affect permissions. You must use policies to grant access to your bucket and the objects in it. Requests to set ACLs or update ACLs fail and return the AccessControlListNotSupported error code. Requests to read ACLs are still supported. For more information, see Controlling object ownership in the Amazon S3 User Guide.

Permissions

You can set access permissions by using one of the following methods:

• Specify a canned ACL with the x-amz-acl request header. Amazon S3 supports a set of predefined ACLs, known as canned ACLs. Each canned ACL has a predefined set of grantees and permissions. Specify the canned ACL name as the value ofx-amz-acl. If you use this header, you cannot use other access control-specific headers in your request. For more information, seeCanned ACL.
• Specify access permissions explicitly with thex-amz-grant-read, x-amz-grant-read-acp,x-amz-grant-write-acp, andx-amz-grant-full-control headers. When using these headers, you specify explicit access permissions and grantees (AWS accounts or Amazon S3 groups) who will receive the permission. If you use these ACL-specific headers, you cannot use the x-amz-acl header to set a canned ACL. These parameters map to the set of permissions that Amazon S3 supports in an ACL. For more information, see Access Control List (ACL) Overview.
  You specify each grantee as a type=value pair, where the type is one of the following:
  • id – if the value specified is the canonical user ID of an AWS account
  • uri – if you are granting permissions to a predefined group
  • emailAddress – if the value specified is the email address of an AWS account

  Note

  Using email addresses to specify a grantee is only supported in the following AWS Regions:
  * US East (N. Virginia)
  * US West (N. California)
  * US West (Oregon)
  * Asia Pacific (Singapore)
  * Asia Pacific (Sydney)
  * Asia Pacific (Tokyo)
  * Europe (Ireland)
  * South America (São Paulo)
  For a list of all the Amazon S3 supported Regions and endpoints, see Regions and Endpoints in the AWS General Reference.
  For example, the following x-amz-grant-write header grants create, overwrite, and delete objects permission to LogDelivery group predefined by Amazon S3 and two AWS accounts identified by their email addresses.
  x-amz-grant-write: uri="http://acs.amazonaws.com/groups/s3/LogDelivery", id="111122223333", id="555566667777"

You can use either a canned ACL or specify access permissions explicitly. You cannot do both.

Grantee Values

You can specify the person (grantee) to whom you're assigning access rights (using request elements) in the following ways. For examples of how to specify these grantee values in JSON format, see the AWS CLI example in Enabling Amazon S3 server access logging in the Amazon S3 User Guide.

• By the person's ID:
  <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="CanonicalUser"><ID><>ID<></ID><DisplayName><>GranteesEmail<></DisplayName> </Grantee>
  DisplayName is optional and ignored in the request
• By URI:
  <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="Group"><URI><>http://acs.amazonaws.com/groups/global/AuthenticatedUsers<></URI></Grantee>
• By Email address:
  <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="AmazonCustomerByEmail"><EmailAddress><>Grantees@email.com<></EmailAddress>&</Grantee>
  The grantee is resolved to the CanonicalUser and, in a response to a GET Object acl request, appears as the CanonicalUser.

Note

Using email addresses to specify a grantee is only supported in the following AWS Regions:

• US East (N. Virginia)
• US West (N. California)
• US West (Oregon)
• Asia Pacific (Singapore)
• Asia Pacific (Sydney)
• Asia Pacific (Tokyo)
• Europe (Ireland)
• South America (São Paulo)
  For a list of all the Amazon S3 supported Regions and endpoints, see Regions and Endpoints in the AWS General Reference.

The following operations are related to PutBucketAcl:

• CreateBucket
• DeleteBucket
• GetObjectAcl

Request Syntax

PUT /?acl HTTP/1.1
Host: Bucket.s3.amazonaws.com
x-amz-acl: ACL
Content-MD5: ContentMD5
x-amz-sdk-checksum-algorithm: ChecksumAlgorithm
x-amz-grant-full-control: GrantFullControl
x-amz-grant-read: GrantRead
x-amz-grant-read-acp: GrantReadACP
x-amz-grant-write: GrantWrite
x-amz-grant-write-acp: GrantWriteACP
x-amz-expected-bucket-owner: ExpectedBucketOwner
<?xml version="1.0" encoding="UTF-8"?>
<AccessControlPolicy xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
   <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>
   <Owner>
      <DisplayName>string</DisplayName>
      <ID>string</ID>
   </Owner>
</AccessControlPolicy>

URI Request Parameters

The request uses the following URI parameters.

The bucket to which to apply the ACL.

Required: Yes

Content-MD5

The Base64 encoded 128-bit MD5 digest of the data. This header must be used as a message integrity check to verify that the request body was not corrupted in transit. For more information, go to RFC 1864.

For requests made using the AWS Command Line Interface (CLI) or AWS SDKs, this field is calculated automatically.

The canned ACL to apply to the bucket.

Valid Values: private | public-read | public-read-write | authenticated-read

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).

Allows grantee the read, write, read ACP, and write ACP permissions on the bucket.

Allows grantee to list the objects in the bucket.

Allows grantee to read the bucket ACL.

Allows grantee to create new objects in the bucket.

For the bucket and object owners of existing objects, also allows deletions and overwrites of those objects.

Allows grantee to write the ACL for the applicable bucket.

Indicates the algorithm used to create the checksum for the request when you use the SDK. This header will not provide any additional functionality if you don't use the SDK. When you send this header, there must be a corresponding x-amz-checksum orx-amz-trailer header sent. Otherwise, Amazon S3 fails the request with the HTTP status code 400 Bad Request. For more information, see Checking object integrity in the Amazon S3 User Guide.

If you provide an individual checksum, Amazon S3 ignores any providedChecksumAlgorithm parameter.

Valid Values: CRC32 | CRC32C | SHA1 | SHA256 | CRC64NVME

Request Body

The request accepts the following data in XML format.

AccessControlPolicy

Root level tag for the AccessControlPolicy parameters.

Required: Yes

Grants

A list of grants.

Type: Array of Grant data types

Required: No

Owner

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

Type: Owner data type

Required: No

Response Syntax

HTTP/1.1 200

Response Elements

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

Examples

Sample Request: Access permissions specified in the body

The following request grants access permission to the existingexamplebucket bucket. The request specifies the ACL in the body. In addition to granting full control to the bucket owner, the XML specifies the following grants.

• Grant the AllUsers group READ permission on the bucket.
• Grant the LogDelivery group WRITE permission on the bucket.
• Grant an AWS account, identified by email address, WRITE_ACP permission.
• Grant an AWS account, identified by canonical user ID, READ_ACP permission.

PUT ?acl HTTP/1.1
Host: examplebucket.s3.<Region>.amazonaws.com
Content-Length: 1660
x-amz-date: Thu, 12 Apr 2012 20:04:21 GMT
Authorization: authorization string

<AccessControlPolicy xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Owner>
    <ID>852b113e7a2f25102679df27bb0ae12b3f85be6BucketOwnerCanonicalUserID</ID>
    <DisplayName>OwnerDisplayName</DisplayName>
  </Owner>
  <AccessControlList>
    <Grant>
      <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="CanonicalUser">
        <ID>852b113e7a2f25102679df27bb0ae12b3f85be6BucketOwnerCanonicalUserID</ID>
        <DisplayName>OwnerDisplayName</DisplayName>
      </Grantee>
      <Permission>FULL_CONTROL</Permission>
    </Grant>
    <Grant>
      <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="Group">
        <URI xmlns="">http://acs.amazonaws.com/groups/global/AllUsers</URI>
      </Grantee>
      <Permission xmlns="">READ</Permission>
    </Grant>
    <Grant>
      <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="Group">
        <URI xmlns="">http://acs.amazonaws.com/groups/s3/LogDelivery</URI>
      </Grantee>
      <Permission xmlns="">WRITE</Permission>
    </Grant>
    <Grant>
      <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="AmazonCustomerByEmail">
        <EmailAddress xmlns="">xyz@amazon.com</EmailAddress>
      </Grantee>
      <Permission xmlns="">WRITE_ACP</Permission>
    </Grant>
    <Grant>
      <Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="CanonicalUser">
        <ID xmlns="">f30716ab7115dcb44a5ef76e9d74b8e20567f63TestAccountCanonicalUserID</ID>
      </Grantee>
      <Permission xmlns="">READ_ACP</Permission>
    </Grant>
  </AccessControlList>
</AccessControlPolicy>
         

Sample Response

This example illustrates one usage of PutBucketAcl.

HTTP/1.1 200 OK
x-amz-id-2: NxqO3PNiMHXXGwjgv15LLgUoAmPVmG0xtZw2sxePXLhpIvcyouXDrcQUaWWXcOK0
x-amz-request-id: C651BC9B4E1BD401
Date: Thu, 12 Apr 2012 20:04:28 GMT
Content-Length: 0
Server: AmazonS3
         

Sample Request: Access permissions specified using headers

The following request uses ACL-specific request headers to grant the following permissions:

• Write permission to the Amazon S3 LogDelivery group and an AWS account identified by the email xyz@amazon.com.
• Read permission to the Amazon S3 AllUsers group

PUT ?acl HTTP/1.1
Host: examplebucket.s3.<Region>.amazonaws.com
x-amz-date: Sun, 29 Apr 2012 22:00:57 GMT
x-amz-grant-write: uri="http://acs.amazonaws.com/groups/s3/LogDelivery", emailAddress="xyz@amazon.com"
x-amz-grant-read: uri="http://acs.amazonaws.com/groups/global/AllUsers"
Accept: */*
Authorization: authorization string
         

Sample Response

This example illustrates one usage of PutBucketAcl.

HTTP/1.1 200 OK
x-amz-id-2: 0w9iImt23VF9s6QofOTDzelF7mrryz7d04Mw23FQCi4O205Zw28Zn+d340/RytoQ
x-amz-request-id: A6A8F01A38EC7138
Date: Sun, 29 Apr 2012 22:01:10 GMT
Content-Length: 0
Server: AmazonS3
         

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following:

• AWS Command Line Interface
• AWS SDK for .NET
• AWS SDK for C++
• AWS SDK for Go v2
• AWS SDK for Java V2
• AWS SDK for JavaScript V3
• AWS SDK for Kotlin
• AWS SDK for PHP V3
• AWS SDK for Python
• AWS SDK for Ruby V3