[[!meta copyright="Copyright © 2012, 2013 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] [[!tag open_issue_documentation]] # IRC, freenode, #hurd, 2012-04-20 <Tekk_> what are the extensions to ext2? <Tekk_> that hurd uses <braunr> tha ability to store passive translator command lines in the inodes <braunr> the* <antrik> well, also a fourth set of permission bits, and an "author" field <braunr> right <antrik> both very obscure features that better never existed... The fourth set of permission bits is for unknown users. In order to take advantage of these features, the owner/creator of the partition must be set to *hurd*. `mke2fs`, unless specifically overridden on the command line (`-o hurd`, for example), will set the default to whatever system it is running on. At least the root filesystem must be of *hurd* type, as it has to store various passive translator settings. Even if a file system is not of the native type, others may still use it; they just may not be able to use certain extensions.