sp_droplinkedsrvlogin (Transact-SQL MetaData) Definition

Please note: that the following source code is provided and copyrighted by Microsoft and is for educational purpose only.
The meta data is from an SQL 2012 Server.

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Definition:

sys.sp_droplinkedsrvlogin(nvarchar @rmtsrvname
, nvarchar @locallogin)

MetaData:

 create procedure sys.sp_droplinkedsrvlogin  
    @rmtsrvname        sysname,  
    @locallogin        sysname  
as  
    declare @localid    int  
  
    --  DISALLOW USER TRANSACTION  
    set implicit_transactions off  
    if @@trancount > 0  
    begin  
        raiserror(15002,-1,-1,'sys.sp_droplinkedsrvlogin')  
        return (1)  
    end  
  
    --  CHECK PERMISSIONS  
    if not (has_perms_by_name(null, null, 'alter any login') = 1)  
    begin  
        EXEC %%System().AuditEvent(ID = 1380207692, Success = 0, TargetLoginName = @locallogin, TargetUserName = NULL, Role = NULL, Object = NULL, Provider = NULL, Server = @rmtsrvname)  
        raiserror(15247,-1,-1)  
        return (1)  
    end  
    else  
        EXEC %%System().AuditEvent(ID = 1380207692, Success = 1, TargetLoginName = @locallogin, TargetUserName = NULL, Role = NULL, Object = NULL, Provider = NULL, Server = @rmtsrvname)  
              
    BEGIN TRAN  
  
    --  VALIDATE/LOCK SERVER NAME --   
    EXEC %%LinkedServer ( Name = @rmtsrvname ) . Lock ( Exclusive = 1 )  
    IF @@ERROR <> 0  
    begin  
        ROLLBACK TRAN  
        raiserror(15015,-1,-1,@rmtsrvname)  
        return (1)  
    end  
  
    --  CHECK LOCAL USER NAME IF GIVEN  
    select @localid = 0  
    if @locallogin is not null  
    begin  
        --  share-lock the local login  
        EXEC %%LocalLogin ( Name = @locallogin ) . Lock ( Exclusive = 0 )  
        IF @@ERROR = 0  
            select @localid = principal_id from sys.server_principals  
                where name = @locallogin and type in ('S', 'U')  
        if @localid = 0  
        begin  
            --  THERE WILL BE NO LinkedLogins, SO ONLY AN ERROR IF NO NT-NAME OUT THERE --   
            IF suser_sid(@locallogin) IS NULL  
            BEGIN  
                ROLLBACK TRAN  
                raiserror(15007,-1,-1,@locallogin)  
                return (1)  
            END  
  
            --  "SUCCESS" --   
            COMMIT TRAN  
            return(0)  
        end  
    end  
  
    --  IF MAPPING EXISTS FOR THIS SID, REMOVE IT --   
    IF EXISTS (SELECT * FROM sys.linked_logins WHERE  
            server_id IN (SELECT server_id FROM sys.servers where name = @rmtsrvname)  
            AND local_principal_id = @localid)  
    BEGIN  
        EXEC %%LinkedServer(Name=@rmtsrvname).RemoveLinkedLogin(LocalID=@localid)  
    END  
  
    --  EMDEventType(x_eet_Drop_Linked_Server_Login), EMDUniversalClass(x_eunc_Linked_Server), src major id, src minor id, src name  
    --  -1 means ignore target stuff, target major id, target minor id, target name,  
    --  # of parameters, 5 parameters  
    EXEC %%System().FireTrigger(ID = 236, ID = 102, ID = 0, ID = 0, Value = @rmtsrvname,  
        ID = 101, ID = @localid, ID = 0, Value = NULL,   
        ID = 2, Value = @rmtsrvname, Value = @locallogin, Value = NULL, Value = NULL, Value = NULL, Value = NULL, Value = NULL)  
  
    --  SUCCESS --   
    COMMIT TRAN  
    return(0) --  sp_droplinkedsrvlogin