1VFS_ACL_XATTR(8)          System Administration tools         VFS_ACL_XATTR(8)
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NAME

6       vfs_acl_xattr - Save NTFS-ACLs in Extended Attributes (EAs)
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SYNOPSIS

9       vfs objects = acl_xattr
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DESCRIPTION

12       This VFS module is part of the samba(7) suite.
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14       The vfs_acl_xattr VFS module stores NTFS Access Control Lists (ACLs) in
15       Extended Attributes (EAs). This enables the full mapping of Windows
16       ACLs on Samba servers.
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18       The ACLs are stored in the Extended Attribute security.NTACL of a file
19       or directory. This Attribute is not listed by getfattr -d filename. To
20       show the current value, the name of the EA must be specified (e.g.
21       getfattr -n security.NTACL filename).
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23       This module forces the following parameters:
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25              •   inherit acls = true
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27              •   dos filemode = true
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29              •   force unknown acl user = true
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32       This module is stackable.
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OPTIONS

35       acl_xattr:ignore system acls = [yes|no]
36           When set to yes, a best effort mapping from/to the POSIX ACL layer
37           will not be done by this module. The default is no, which means
38           that Samba keeps setting and evaluating both the system ACLs and
39           the NT ACLs. This is better if you need your system ACLs be set for
40           local or NFS file access, too. If you only access the data via
41           Samba you might set this to yes to achieve better NT ACL
42           compatibility.
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44           If acl_xattr:ignore system acls is set to yes, the following
45           additional settings will be enforced:
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47                  •   create mask = 0666
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49                  •   directory mask = 0777
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51                  •   map archive = no
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53                  •   map hidden = no
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55                  •   map readonly = no
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57                  •   map system = no
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59                  •   store dos attributes = yes
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62       acl_xattr:default acl style = [posix|windows|everyone]
63           This parameter determines the type of ACL that is synthesized in
64           case a file or directory lacks an security.NTACL xattr.
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66           When set to posix, an ACL will be synthesized based on the POSIX
67           mode permissions for user, group and others, with an additional ACE
68           for NT Authority\SYSTEM will full rights.
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70           When set to windows, an ACL is synthesized the same way Windows
71           does it, only including permissions for the owner and NT
72           Authority\SYSTEM.
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74           When set to everyone, an ACL is synthesized giving full permissions
75           to everyone (S-1-1-0).
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77           The default for this option is posix.
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AUTHOR

80       The original Samba software and related utilities were created by
81       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
82       Source project similar to the way the Linux kernel is developed.
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86Samba 4.16.2                      06/13/2022                  VFS_ACL_XATTR(8)
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