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When "ignore system acls" is set to "yes, we need to ensure filesystem permission always grant access so that when doing our own access checks we don't run into situations where we grant access but the filesystem doesn't. Bug: https://bugzilla.samba.org/show_bug.cgi?id=12181 Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org> Autobuild-User(master): Ralph Böhme <slow@samba.org> Autobuild-Date(master): Wed Aug 31 18:41:20 CEST 2016 on sn-devel-144
133 lines
4.2 KiB
XML
133 lines
4.2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
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<refentry id="vfs_acl_xattr.8">
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<refmeta>
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<refentrytitle>vfs_acl_xattr</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="source">Samba</refmiscinfo>
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<refmiscinfo class="manual">System Administration tools</refmiscinfo>
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<refmiscinfo class="version">4.6</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>vfs_acl_xattr</refname>
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<refpurpose>Save NTFS-ACLs in Extended Attributes (EAs)</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>vfs objects = acl_xattr</command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>DESCRIPTION</title>
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<para>This VFS module is part of the
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<citerefentry><refentrytitle>samba</refentrytitle>
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<manvolnum>7</manvolnum></citerefentry> suite.</para>
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<para>The <command>vfs_acl_xattr</command> VFS module stores
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NTFS Access Control Lists (ACLs) in Extended Attributes (EAs).
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This enables the full mapping of Windows ACLs on Samba
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servers.
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</para>
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<para>The ACLs are stored in the Extended Attribute
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<parameter>security.NTACL</parameter> of a file or directory.
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This Attribute is <emphasis>not</emphasis> listed by
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<command>getfattr -d <filename>filename</filename></command>.
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To show the current value, the name of the EA must be specified
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(e.g. <command>getfattr -n security.NTACL <filename>filename</filename>
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</command>).
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</para>
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<para>
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This module forces the following parameters:
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<itemizedlist>
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<listitem><para>inherit acls = true</para></listitem>
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<listitem><para>dos filemode = true</para></listitem>
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<listitem><para>force unknown acl user = true</para></listitem>
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</itemizedlist>
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</para>
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<para>This module is stackable.</para>
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</refsect1>
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<refsect1>
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<title>OPTIONS</title>
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<variablelist>
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<!-- please keep in sync with the other acl vfs modules that provide the same options -->
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<varlistentry>
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<term>acl_xattr:ignore system acls = [yes|no]</term>
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<listitem>
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<para>
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When set to <emphasis>yes</emphasis>, a best effort mapping
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from/to the POSIX ACL layer will <emphasis>not</emphasis> be
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done by this module. The default is <emphasis>no</emphasis>,
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which means that Samba keeps setting and evaluating both the
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system ACLs and the NT ACLs. This is better if you need your
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system ACLs be set for local or NFS file access, too. If you only
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access the data via Samba you might set this to yes to achieve
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better NT ACL compatibility.
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</para>
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<para>
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If <emphasis>acl_xattr:ignore system acls</emphasis>
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is set to <emphasis>yes</emphasis>, the following
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additional settings will be enforced:
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<itemizedlist>
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<listitem><para>create mask = 0666</para></listitem>
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<listitem><para>directory mask = 0777</para></listitem>
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<listitem><para>map archive = no</para></listitem>
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<listitem><para>map hidden = no</para></listitem>
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<listitem><para>map readonly = no</para></listitem>
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<listitem><para>map system = no</para></listitem>
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<listitem><para>store dos attributes = yes</para></listitem>
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</itemizedlist>
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>acl_xattr:default acl style = [posix|windows]</term>
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<listitem>
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<para>
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This parameter determines the type of ACL that is synthesized in
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case a file or directory lacks an
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<emphasis>security.NTACL</emphasis> xattr.
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</para>
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<para>
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When set to <emphasis>posix</emphasis>, an ACL will be
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synthesized based on the POSIX mode permissions for user, group
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and others, with an additional ACE for <emphasis>NT
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Authority\SYSTEM</emphasis> will full rights.
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</para>
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<para>
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When set to <emphasis>windows</emphasis>, an ACL is synthesized
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the same way Windows does it, only including permissions for the
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owner and <emphasis>NT Authority\SYSTEM</emphasis>.
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</para>
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<para>
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The default for this option is <emphasis>posix</emphasis>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>AUTHOR</title>
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<para>The original Samba software and related utilities
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were created by Andrew Tridgell. Samba is now developed
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by the Samba Team as an Open Source project similar
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to the way the Linux kernel is developed.</para>
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</refsect1>
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</refentry>
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