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Showing content from https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteBucketPolicy.html below:

DeleteBucketPolicy - Amazon Simple Storage Service

DeleteBucketPolicy

Deletes the policy of a specified bucket.

Note

Directory buckets - For directory buckets, you must make requests for this API operation to the Regional endpoint. These endpoints support path-style requests in the format https://s3express-control.region-code.amazonaws.com/bucket-name . Virtual-hosted-style requests aren't supported. For more information about endpoints in Availability Zones, see Regional and Zonal endpoints for directory buckets in Availability Zones in the Amazon S3 User Guide. For more information about endpoints in Local Zones, see Concepts for directory buckets in Local Zones in the Amazon S3 User Guide.

Permissions

If you are using an identity other than the root user of the AWS account that owns the bucket, the calling identity must both have the DeleteBucketPolicy permissions on the specified bucket and belong to the bucket owner's account in order to use this operation.

If you don't have DeleteBucketPolicy permissions, Amazon S3 returns a 403 Access Denied error. If you have the correct permissions, but you're not using an identity that belongs to the bucket owner's account, Amazon S3 returns a 405 Method Not Allowed error.

Important

To ensure that bucket owners don't inadvertently lock themselves out of their own buckets, the root principal in a bucket owner's AWS account can perform the GetBucketPolicy, PutBucketPolicy, and DeleteBucketPolicy API actions, even if their bucket policy explicitly denies the root principal's access. Bucket owner root principals can only be blocked from performing these API actions by VPC endpoint policies and AWS Organizations policies.

General purpose bucket permissions - The s3:DeleteBucketPolicy permission is required in a policy. For more information about general purpose buckets bucket policies, see Using Bucket Policies and User Policies in the Amazon S3 User Guide.
Directory bucket permissions - To grant access to this API operation, you must have the s3express:DeleteBucketPolicy permission in an IAM identity-based policy instead of a bucket policy. Cross-account access to this API operation isn't supported. This operation can only be performed by the AWS account that owns the resource. For more information about directory bucket policies and permissions, see AWS Identity and Access Management (IAM) for S3 Express One Zone in the Amazon S3 User Guide.

HTTP Host header syntax

Directory buckets - The HTTP Host header syntax is s3express-control.region-code.amazonaws.com.

The following operations are related to DeleteBucketPolicy

Important

You must URL encode any signed header values that contain spaces. For example, if your header value is my file.txt, containing two spaces after my, you must URL encode this value to my%20%20file.txt.

Request Syntax

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

URI Request Parameters

The request uses the following URI parameters.

The bucket name.

Directory buckets - When you use this operation with a directory bucket, you must use path-style requests in the format https://s3express-control.region-code.amazonaws.com/bucket-name . Virtual-hosted-style requests aren't supported. Directory bucket names must be unique in the chosen Zone (Availability Zone or Local Zone). Bucket names must also follow the format bucket-base-name--zone-id--x-s3 (for example, DOC-EXAMPLE-BUCKET--usw2-az1--x-s3). For information about bucket naming restrictions, see Directory bucket naming rules in the Amazon S3 User Guide

Required: Yes

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).

Note

For directory buckets, this header is not supported in this API operation. If you specify this header, the request fails with the HTTP status code 501 Not Implemented.

Request Body

The request does not have a request body.

Response Syntax

HTTP/1.1 204

Response Elements

If the action is successful, the service sends back an HTTP 204 response with an empty HTTP body.

Examples Sample Request for general purpose buckets

This request deletes the bucket named amzn-s3-demo-bucket.


            DELETE /?policy HTTP/1.1
            Host: amzn-s3-demo-bucket.s3.<Region>.amazonaws.com  
            Date: Tue, 04 Apr 2010 20:34:56 GMT  
            Authorization: signatureValue

Sample Response for general purpose buckets

This example illustrates one usage of DeleteBucketPolicy.


            HTTP/1.1 204 No Content 
            x-amz-id-2: Uuag1LuByRx9e6j5OnimrSAMPLEtRPfTaOFg==  
            x-amz-request-id: 656c76696e672SAMPLE5657374  
            Date: Tue, 04 Apr 2010 20:34:56 GMT  
            Connection: keep-alive  
            Server: AmazonS3