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  1. MariaDB Server
  2. MDEV-4332

Increase username length from 16 characters

Details

    • Task
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 5.5.31
    • None
    • None

    Description

      To increase username length from 16 characters to 64 or 128 characters. Included preliminary patch for mariadb 5.5.

      In 5.5 we will not change system tables though. Which means that the user would need to alter system tables manually to use that. A test case (in mysql-test) will have to use ALTER TABLE mysql.user too.

      In 10.0 we'll remove this limitation.

      Attachments

        Issue Links

          is duplicated by

          Task - A task that needs to be done. MDEV-5511 Increase user name length

          • Trivial - Cosmetic problem like misspelt words or misaligned text.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-4514 After increasing user name length mysql.db is reported broken and event scheduler does not start

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-4515 Long user names are truncated to 48 symbols in error messages

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-4519 SHOW EVENTS and SHOW PROCEDURE STATUS truncate long user names

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-5785 RBR between old master and new slave breaks on direct updates to system tables

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-6178 [PATCH] mysql_upgrade breaks databases with long user names

          • Major - Major loss of function.
          • Closed

          Activity

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            serg Sergei Golubchik added a comment -

            username length is increased in the server to 128, although practically it cannot be larger that 80 now, otherwise columns_priv table hits a max index length limitation.

            pushed in 5.5

            serg Sergei Golubchik added a comment - username length is increased in the server to 128, although practically it cannot be larger that 80 now, otherwise columns_priv table hits a max index length limitation. pushed in 5.5
            elenst Elena Stepanova added a comment -

            Is it on purpose that I_S.PROCESSLIST still has `USER` varchar(16) NOT NULL DEFAULT ''?

            elenst Elena Stepanova added a comment - Is it on purpose that I_S.PROCESSLIST still has `USER` varchar(16) NOT NULL DEFAULT ''?
            elenst Elena Stepanova added a comment -

            proxies_priv table also needs to be altered. It's not a bug for 5.5 since ALTER is done manually anyway, just something not to forget in instructions. In 10.x, I suppose, it should be done along with other system tables.

            elenst Elena Stepanova added a comment - proxies_priv table also needs to be altered. It's not a bug for 5.5 since ALTER is done manually anyway, just something not to forget in instructions. In 10.x, I suppose, it should be done along with other system tables.
            elenst Elena Stepanova added a comment -

            ... and mysql.servers (Username).
            (In proxies_priv there are two fields, User and Proxied_User).

            elenst Elena Stepanova added a comment - ... and mysql.servers (Username). (In proxies_priv there are two fields, User and Proxied_User).
            elenst Elena Stepanova added a comment -

            Actually, in proxies_priv there are 3 fields – also Grantor, which should be longer than 80, because it also includes the host, e.g. root@localhost

            elenst Elena Stepanova added a comment - Actually, in proxies_priv there are 3 fields – also Grantor, which should be longer than 80, because it also includes the host, e.g. root@localhost
            elenst Elena Stepanova added a comment -

            procs_priv and tables_priv also have Grantor column (currently char(77)), they should apparently be modified as well.

            elenst Elena Stepanova added a comment - procs_priv and tables_priv also have Grantor column (currently char(77)), they should apparently be modified as well.
            igalic Igor Galić added a comment -

            Here's a full listing:

             
            		 
            USE mysql;
            		 
            ALTER TABLE  `user` CHANGE  `User`  `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `procs_priv` CHANGE  `User`  `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `proxies_priv` CHANGE  `Proxied_user` `Proxied_User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `proxies_priv` CHANGE  `Grantor` `Grantor` VARCHAR( 141 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `tables_priv` CHANGE  `Grantor` `Grantor` VARCHAR( 141 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `tables_priv` CHANGE  `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `db` CHANGE  `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';
            		 
            ALTER TABLE  `columns_priv` CHANGE  `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT  '';

            igalic Igor Galić added a comment - Here's a full listing:   USE mysql; ALTER TABLE `user` CHANGE `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `procs_priv` CHANGE `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `proxies_priv` CHANGE `Proxied_user` `Proxied_User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `proxies_priv` CHANGE `Grantor` `Grantor` VARCHAR( 141 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `tables_priv` CHANGE `Grantor` `Grantor` VARCHAR( 141 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `tables_priv` CHANGE `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `db` CHANGE `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''; ALTER TABLE `columns_priv` CHANGE `User` `User` VARCHAR( 80 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '';
            elenst Elena Stepanova added a comment -

            There are actually some more, it's listed here: https://mariadb.com/kb/en/create-user/#user-names (at the bottom of the page)

            elenst Elena Stepanova added a comment - There are actually some more, it's listed here: https://mariadb.com/kb/en/create-user/#user-names (at the bottom of the page)

            People

              serg Sergei Golubchik
              jani Jani Tolonen
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                Resolved:

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