Remove a default ACL from a bucket

Remove a default access control list (ACL) for a Cloud Storage bucket.

Explore further

For detailed documentation that includes this code sample, see the following:

Code sample

C++

For more information, see the Cloud Storage C++ API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  namespace 
  
 gcs 
  
 = 
  
 :: 
 google 
 :: 
 cloud 
 :: 
 storage 
 ; 
 []( 
 gcs 
 :: 
 Client 
  
 client 
 , 
  
 std 
 :: 
 string 
  
 const 
&  
 bucket_name 
 , 
  
 std 
 :: 
 string 
  
 const 
&  
 entity 
 ) 
  
 { 
  
 google 
 :: 
 cloud 
 :: 
 Status 
  
 status 
  
 = 
  
 client 
 . 
 DeleteDefaultObjectAcl 
 ( 
 bucket_name 
 , 
  
 entity 
 ); 
  
 if 
  
 ( 
 ! 
 status 
 . 
 ok 
 ()) 
  
 throw 
  
 std 
 :: 
 runtime_error 
 ( 
 status 
 . 
 message 
 ()); 
  
 std 
 :: 
 cout 
 << 
 "Deleted ACL entry for " 
 << 
 entity 
 << 
 " in bucket " 
 << 
 bucket_name 
 << 
 " 
 \n 
 " 
 ; 
 } 
 

C#

For more information, see the Cloud Storage C# API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  using 
  
  Google.Cloud.Storage.V1 
 
 ; 
 using 
  
 System 
 ; 
 using 
  
 System.Linq 
 ; 
 public 
  
 class 
  
 RemoveBucketDefaultOwnerSample 
 { 
  
 public 
  
 void 
  
 RemoveBucketDefaultOwner 
 ( 
  
 string 
  
 bucketName 
  
 = 
  
 "your-unique-bucket-name" 
 , 
  
 string 
  
 userEmail 
  
 = 
  
 "user@iam.gserviceaccount.com" 
 ) 
  
 { 
  
 var 
  
 storage 
  
 = 
  
  StorageClient 
 
 . 
  Create 
 
 (); 
  
 var 
  
 bucket 
  
 = 
  
 storage 
 . 
 GetBucket 
 ( 
 bucketName 
 , 
  
 new 
  
  GetBucketOptions 
 
  
 { 
  
 Projection 
  
 = 
  
  Projection 
 
 . 
  Full 
 
  
 }); 
  
 if 
  
 ( 
 bucket 
 . 
 DefaultObjectAcl 
  
 == 
  
 null 
 ) 
  
 { 
  
 Console 
 . 
 WriteLine 
 ( 
 "No default owner to remove" 
 ); 
  
 } 
  
 else 
  
 { 
  
 bucket 
 . 
 DefaultObjectAcl 
  
 = 
  
 bucket 
 . 
 DefaultObjectAcl 
 . 
 Where 
 ( 
 acl 
  
 = 
>  
 ! 
 ( 
 acl 
 . 
 Entity 
  
 == 
  
 $"user-{userEmail}" 
 && 
 acl 
 . 
 Role 
  
 == 
  
 "OWNER" 
 )). 
 ToList 
 (); 
  
 var 
  
 updatedBucket 
  
 = 
  
 storage 
 . 
 UpdateBucket 
 ( 
 bucket 
 ); 
  
 Console 
 . 
 WriteLine 
 ( 
 $"Removed user {userEmail} from bucket {bucketName}." 
 ); 
  
 } 
  
 } 
 } 
 

Go

For more information, see the Cloud Storage Go API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  import 
  
 ( 
  
 "context" 
  
 "fmt" 
  
 "cloud.google.com/go/storage" 
 ) 
 // deleteDefaultBucketACL removes default ACL from a bucket. 
 func 
  
 removeBucketDefaultOwner 
 ( 
 bucket 
  
 string 
 , 
  
 entity 
  
 storage 
 . 
  ACLEntity 
 
 ) 
  
 error 
  
 { 
  
 // bucket := "bucket-name" 
  
 // entity := storage.AllUsers 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 storage 
 . 
 NewClient 
 ( 
 ctx 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "storage.NewClient: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 defer 
  
 client 
 . 
 Close 
 () 
  
 acl 
  
 := 
  
 client 
 . 
  Bucket 
 
 ( 
 bucket 
 ). 
  DefaultObjectACL 
 
 () 
  
 if 
  
 err 
  
 := 
  
 acl 
 . 
 Delete 
 ( 
 ctx 
 , 
  
 entity 
 ); 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "ACLHandle.Delete: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 return 
  
 nil 
 } 
 

Java

For more information, see the Cloud Storage Java API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  import 
  
 com.google.cloud.storage. Acl 
. User 
 
 ; 
 import 
  
 com.google.cloud.storage. Bucket 
 
 ; 
 import 
  
 com.google.cloud.storage. Storage 
 
 ; 
 import 
  
 com.google.cloud.storage. StorageOptions 
 
 ; 
 public 
  
 class 
 RemoveBucketDefaultOwner 
  
 { 
  
 public 
  
 static 
  
 void 
  
 removeBucketDefaultOwner 
 ( 
 String 
  
 bucketName 
 , 
  
 String 
  
 userEmail 
 ) 
  
 { 
  
 // The ID of your GCS bucket 
  
 // String bucketName = "your-unique-bucket-name"; 
  
 // The email of the user you wish to remove as a default owner 
  
 // String userEmail = "someuser@domain.com" 
  
  Storage 
 
  
 storage 
  
 = 
  
  StorageOptions 
 
 . 
 newBuilder 
 (). 
 build 
 (). 
  getService 
 
 (); 
  
  Bucket 
 
  
 bucket 
  
 = 
  
 storage 
 . 
  get 
 
 ( 
 bucketName 
 ); 
  
  User 
 
  
 userToRemove 
  
 = 
  
 new 
  
  User 
 
 ( 
 userEmail 
 ); 
  
 boolean 
  
 success 
  
 = 
  
 bucket 
 . 
  deleteDefaultAcl 
 
 ( 
 userToRemove 
 ); 
  
 if 
  
 ( 
 success 
 ) 
  
 { 
  
 System 
 . 
 out 
 . 
 println 
 ( 
 "Removed user " 
  
 + 
  
 userEmail 
  
 + 
  
 " as an owner on " 
  
 + 
  
 bucketName 
 ); 
  
 } 
  
 else 
  
 { 
  
 System 
 . 
 out 
 . 
 println 
 ( 
 "User " 
  
 + 
  
 userEmail 
  
 + 
  
 " was not found" 
 ); 
  
 } 
  
 } 
 } 
 

Node.js

For more information, see the Cloud Storage Node.js API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  /** 
 * TODO(developer): Uncomment the following lines before running the sample. 
 */ 
 // The ID of your GCS bucket 
 // const bucketName = 'your-unique-bucket-name'; 
 // The email address of the user to remove 
 // const userEmail = 'user-email-to-remove'; 
 // Imports the Google Cloud client library 
 const 
  
 { 
 Storage 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/storage 
' 
 ); 
 // Creates a client 
 const 
  
 storage 
  
 = 
  
 new 
  
 Storage 
 (); 
 async 
  
 function 
  
 removeBucketDefaultOwner 
 () 
  
 { 
  
 // Removes the user from the access control list of the bucket. You can use 
  
 // deleteAllUsers(), deleteDomain(), deleteProject(), deleteGroup(), and 
  
 // deleteAllAuthenticatedUsers() to remove access for different types of entities. 
  
 await 
  
 storage 
 . 
 bucket 
 ( 
 bucketName 
 ). 
 acl 
 . 
 default 
 . 
 owners 
 . 
 deleteUser 
 ( 
 userEmail 
 ); 
  
 console 
 . 
 log 
 ( 
 `Removed user 
 ${ 
 userEmail 
 } 
 from bucket 
 ${ 
 bucketName 
 } 
 .` 
 ); 
 } 
 removeBucketDefaultOwner 
 (). 
 catch 
 ( 
 console 
 . 
 error 
 ); 
 

PHP

For more information, see the Cloud Storage PHP API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  use Google\Cloud\Storage\StorageClient; 
 /** 
 * Delete an entity from a bucket's default ACL. 
 * 
 * @param string $bucketName The name of your Cloud Storage bucket. 
 *        (e.g. 'my-bucket') 
 * @param string $entity The entity for which to update access controls. 
 *        (e.g. 'user-example@domain.com') 
 */ 
 function delete_bucket_default_acl(string $bucketName, string $entity): void 
 { 
 $storage = new StorageClient(); 
 $bucket = $storage->bucket($bucketName); 
 $acl = $bucket->defaultAcl(); 
 $acl->delete($entity); 
 printf('Deleted %s from gs://%s default ACL' . PHP_EOL, $entity, $bucketName); 
 } 
 

Python

For more information, see the Cloud Storage Python API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  from 
  
 google.cloud 
  
 import 
  storage 
 
 def 
  
 remove_bucket_default_owner 
 ( 
 bucket_name 
 , 
 user_email 
 ): 
  
 """Removes a user from the access control list of the given bucket's 
 default object access control list.""" 
 # bucket_name = "your-bucket-name" 
 # user_email = "name@example.com" 
 storage_client 
 = 
  storage 
 
 . 
  Client 
 
 () 
 bucket 
 = 
 storage_client 
 . 
  bucket 
 
 ( 
 bucket_name 
 ) 
 # Reload fetches the current ACL from Cloud Storage. 
 bucket 
 . 
 acl 
 . 
 reload 
 () 
 # You can also use `group`, `domain`, `all_authenticated` and `all` to 
 # remove access for different types of entities. 
 bucket 
 . 
  default_object_acl 
 
 . 
  user 
 
 ( 
 user_email 
 ) 
 . 
 revoke_read 
 () 
 bucket 
 . 
  default_object_acl 
 
 . 
  user 
 
 ( 
 user_email 
 ) 
 . 
 revoke_write 
 () 
 bucket 
 . 
  default_object_acl 
 
 . 
  user 
 
 ( 
 user_email 
 ) 
 . 
 revoke_owner 
 () 
 bucket 
 . 
  default_object_acl 
 
 . 
 save 
 () 
 print 
 ( 
 f 
 "Removed user 
 { 
 user_email 
 } 
 from the default acl of bucket 
 { 
 bucket_name 
 } 
 ." 
 ) 
 

Ruby

For more information, see the Cloud Storage Ruby API reference documentation .

To authenticate to Cloud Storage, set up Application Default Credentials. For more information, see Set up authentication for client libraries .

  # The ID of your GCS bucket 
 # bucket_name = "your-unique-bucket-name" 
 # email       = "Google Cloud Storage ACL Entity email" 
 require 
  
 "google/cloud/storage" 
 storage 
  
 = 
  
 Google 
 :: 
 Cloud 
 :: 
  Storage 
 
 . 
  new 
 
 bucket 
  
 = 
  
 storage 
 . 
 bucket 
  
 bucket_name 
 bucket 
 . 
  default_acl 
 
 . 
 delete 
  
 email 
 puts 
  
 "Removed default ACL permissions for 
 #{ 
 email 
 } 
 from 
 #{ 
 bucket_name 
 } 
 " 
 

What's next

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