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'\" t
.\" Title: vfs_streams_xattr
.\" Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 02/19/2024
.\" Manual: System Administration tools
.\" Source: Samba 4.19.5
.\" Language: English
.\"
.TH "VFS_STREAMS_XATTR" "8" "02/19/2024" "Samba 4\&.19\&.5" "System Administration tools"
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.\" * Define some portability stuff
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" * MAIN CONTENT STARTS HERE *
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.SH "NAME"
vfs_streams_xattr \- Store alternate data streams in posix xattrs
.SH "SYNOPSIS"
.HP \w'\ 'u
vfs objects = streams_xattr
.SH "DESCRIPTION"
.PP
This VFS module is part of the
\fBsamba\fR(7)
suite\&.
.PP
The
vfs_streams_xattr
enables storing of NTFS alternate data streams in the file system\&. As a normal posix file system does not support the concept of multiple data streams per file, the streams_xattr module stores the data in posix extended attributes (xattrs)\&. The name of these attributes by default is user\&.DosStream\&."ADS\-NAME"\&. The prefix "user\&.DosStream\&." can be changed with the module option
streams_xattr:prefix, but be aware that this will also expose those ADS over the SMB extended attributes interface\&.
.PP
The file system that is shared with this module enabled must support xattrs\&.
.PP
Please note that most file systems have severe limitations on the size of xattrs\&. So this module might work for applications like IE that stores small zone information in streams but will fail for applications that store serious amounts of data in ADSs\&.
.SH "OPTIONS"
.PP
streams_xattr:prefix = STRING
.RS 4
Name prefix used when storing an ADS in an xattr, defaults to
user\&.DosStream\&.\&. Changing this will also expose ADS over the SMB extended attributes interface\&.
.RE
.PP
streams_xattr:store_stream_type = [yes|no]
.RS 4
Whether the xattr names for Alternate Data Streams of type "$DATA" are suffixed by the stream type string ":$DATA"\&. The default is
yes\&.
.RE
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf
\fI[share]\fR
\m[blue]\fBvfs objects = streams_xattr\fR\m[]
.fi
.if n \{\
.RE
.\}
.SH "AUTHOR"
.PP
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\&.
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