Extended file attributes: Difference between revisions

Revision as of 08:14, 19 July 2020

Revision as of 01:34, 12 September 2020

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=== AIX ===

In [[AIX]], the JFS2 v2 filesystem supports extended attributes, which are accessible using the <tt>{{mono|getea</tt>}} command.<ref>{{cite web

| url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.cmds2/getea.htm

| title=getea Command

| work=IBM [[AIX]] V7.2 documentation

| publisher=[[IBM]]

| accessdate=2017-07-11}}</ref> The <tt>{{mono|getea,</tt>}}<ref>{{cite web

| url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.basetrf1/getea.htm

| title=getea Subroutine

| work=IBM AIX V7.2 documentation: Base Operating System and Extensions, Volume 1

| publisher=IBM

| accessdate=2017-07-11}}</ref>, <tt>{{mono|setea</tt>}},<ref>{{cite web

| url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.basetrf2/setea.htm

| title=setea Subroutine

| work=IBM AIX V7.2 documentation: Base Operating System and Extensions, Volume 2

| publisher=IBM

| accessdate=2017-07-11}}</ref> <tt>{{mono|listea</tt>}},<ref>{{cite web

| url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.basetrf1/listea.htm

| title=listea Subroutine

| work=IBM AIX V7.2 documentation: Base Operating System and Extensions, Volume 1

| publisher=IBM

| accessdate=2017-07-11}}</ref> <tt>{{mono|statea</tt>}},<ref>{{cite web

| url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.basetrf2/statea.htm

| title=statea Subroutine

| work=IBM AIX V7.2 documentation: Base Operating System and Extensions, Volume 2

| publisher=IBM

| accessdate=2017-07-11}}</ref> and <tt>{{mono|removeea</tt>}}<ref>{{cite web

| url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.basetrf2/removeea.htm

| title=removeea Subroutine

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=== FreeBSD ===

In [[FreeBSD]] 5.0 and later, the [[Unix File System|UFS1]], UFS2, and ZFS filesystems support extended attributes, using the <tt>{{mono|extattr_</tt>}}<ref>{{man|2|extattr|FreeBSD}}

</ref> family of system calls. Any regular file may have a list of extended attributes. Each attribute consists of a name and the associated data. The name must be a [[null-terminated string]], and exists in a namespace identified by a small-integer namespace identifier. Currently, two namespaces exist: user and system. The user namespace has no restrictions with regard to naming or contents. The system namespace is primarily used by the kernel for [[access control list]]s and [[mandatory access control]].