Editing Access-control list (section)

==== NFSv4 ACL ====
[[NFSv4]] ACLs are much more powerful than POSIX draft ACLs. Unlike draft POSIX ACLs, NFSv4 ACLs are defined by an actually published standard, as part of the [[Network File System]].

NFSv4 ACLs are supported by many Unix and Unix-like operating systems. Examples include [[AIX]], [[FreeBSD]],<ref>{{cite web |url= https://wiki.freebsd.org/NFSv4_ACLs |title= NFSv4 ACLs |date= 2011-09-12 |publisher= [[FreeBSD]] |access-date= 2013-04-08}}</ref> [[Mac OS X]] beginning with version 10.4 ("[[Mac OS X Tiger|Tiger]]"), or Solaris with [[ZFS]] filesystem,<ref>{{cite web |url= https://docs.oracle.com/cd/E19082-01/817-2271/ftyxi/index.html |title= Chapter 8 Using ACLs and Attributes to Protect ZFS Files |publisher= [[Oracle Corporation]] |date= 2009-10-01 |access-date= 2013-04-08}}</ref> support NFSv4 ACLs, which are part of the NFSv4 standard. There are two experimental implementations of NFSv4 ACLs for Linux: NFSv4 ACLs support for [[Ext3]] filesystem<ref>{{cite web |url= http://users.suse.com/~agruen/nfs4acl/ |title= Native NFSv4 ACLs on Linux |first= Andreas |last= Grünbacher |date= May 2008 |publisher= [[SUSE S.A.|SUSE]] |archive-url= https://web.archive.org/web/20130620012339/http://users.suse.com/~agruen/nfs4acl/ |archive-date= 2013-06-20 |url-status= dead |access-date= 2013-04-08}}</ref> and the more recent [[Richacls]], which brings NFSv4 ACLs support for [[Ext4]] filesystem.<ref>{{cite web |url=http://www.bestbits.at/richacl/| title=Richacls – Native NFSv4 ACLs on Linux |first=Andreas |last=Grünbacher |date=July–September 2010 |publisher=bestbits.at |access-date=2013-04-08 |archive-url=https://web.archive.org/web/20130320080142/http://www.bestbits.at/richacl/ |archive-date=2013-03-20 |url-status=dead}}</ref> As with POSIX ACLs, NFSv4 ACLs are usually stored as extended attributes on Unix-like systems.

NFSv4 ACLs are organized nearly identically to the Windows&nbsp;NT ACLs used in [[NTFS]].<ref>{{cite web |url=https://wiki.linux-nfs.org/wiki/index.php/ACLs#NFSv4_and_Windows_ACLs |title=ACLs |website=Linux NFS}}</ref> NFSv4.1 ACLs are a superset of both NT ACLs and POSIX draft ACLs.<ref>{{cite web |title=Mapping Between NFSv4 and Posix Draft ACLs |url=https://tools.ietf.org/id/draft-ietf-nfsv4-acl-mapping-05.txt}}</ref> [[Samba (software)|Samba]] supports saving the NT ACLs of SMB-shared files in many ways, one of which is as NFSv4-encoded ACLs.<ref>{{cite web |title=vfs_nfs4acl_xattr(8) |url=https://www.samba.org/samba/docs/current/man-html/vfs_nfs4acl_xattr.8.html |website=Samba Manual}}</ref>