vfs_acl_xattr - ACLs in Extended Attributes (EAs)
vfs objects = acl_xattr
System Administration tools VFS_ACL_XATTR(8)
NAME
vfs_acl_xattr - Save NTFS-ACLs in Extended Attributes (EAs)
SYNOPSIS
vfs objects = acl_xattr
DESCRIPTION
This VFS module is part of the samba(7) suite.
The vfs_acl_xattr VFS module stores NTFS Access Control Lists (ACLs) in
Extended Attributes (EAs). This enables the full mapping of Windows
ACLs on Samba servers.
The ACLs are stored in the Extended Attribute security.NTACL of a file
or directory. This Attribute is not listed by getfattr -d filename. To
show the current value, the name of the EA must be specified (e.g.
getfattr -n security.NTACL filename).
This module forces the following parameters:
o inherit acls = true
o dos filemode = true
o force unknown acl user = true
This module is stackable.
OPTIONS
acl_xattr:ignore system acls = [yes|no]
When set to yes, a best effort mapping from/to the POSIX ACL layer
will not be done by this module. The default is no, which means
that Samba keeps setting and evaluating both the system ACLs and
the NT ACLs. This is better if you need your system ACLs be set for
local or NFS file access, too. If you only access the data via
Samba you might set this to yes to achieve better NT ACL
compatibility.
If acl_xattr:ignore system acls is set to yes, the following
additional settings will be enforced:
o create mask = 0666
o directory mask = 0777
o map archive = no
o map hidden = no
o map readonly = no
o map system = no
o store dos attributes = yes
acl_xattr:default acl style = [posix|windows|everyone]
This parameter determines the type of ACL that is synthesized in
case a file or directory lacks an security.NTACL xattr.
When set to posix, an ACL will be synthesized based on the POSIX
mode permissions for user, group and others, with an additional ACE
for NT Authority\SYSTEM will full rights.
When set to windows, an ACL is synthesized the same way Windows
does it, only including permissions for the owner and NT
Authority\SYSTEM.
When set to everyone, an ACL is synthesized giving full permissions
to everyone (S-1-1-0).
The default for this option is posix.
AUTHOR
The original Samba software and related utilities were created by
Andrew Tridgell. Samba is now developed by the Samba Team as an Open
Source project similar to the way the Linux kernel is developed.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | service/network/samba |
+---------------+-----------------------+
|Stability | Volatile |
+---------------+-----------------------+
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from
https://download.samba.org/pub/samba/stable/samba-4.13.17.tar.gz.
Further information about this software can be found on the open source
community website at http://www.samba.org/.
Samba 4.13.17 06/28/2022 VFS_ACL_XATTR(8)