Provided by: samba-vfs-modules_4.3.8+dfsg-0ubuntu1_i386 bug

NAME

       vfs_fruit - Enhanced OS X and Netatalk interoperability

SYNOPSIS

       vfs objects = fruit

DESCRIPTION

       This VFS module is part of the samba(7) suite.

       The vfs_fruit module provides enhanced compatibility with Apple SMB
       clients and interoperability with a Netatalk 3 AFP fileserver.

       The module should be stacked with vfs_catia if enabling character
       conversion and must be stacked with vfs_streams_xattr, see the example
       section for the correct config.

       The module enables alternate data streams (ADS) support for a share,
       intercepts the OS X special streams "AFP_AfpInfo" and "AFP_Resource"
       and handles them in a special way. All other named streams are deferred
       to vfs_streams_xattr which must be loaded together with vfs_fruit.

       Having shares with ADS support enabled for OS X client is worthwhile
       because it resembles the behaviour of Apple's own SMB server
       implementation and it avoids certain severe performance degradations
       caused by Samba's case sensitivity semantics.

       The OS X metadata and resource fork stream can be stored in a way
       compatible with Netatalk 3 by setting fruit:resource = file and
       fruit:metadata = netatalk.

       OS X maps NTFS illegal characters to the Unicode private range in SMB
       requests. By setting fruit:encoding = native, all mapped characters are
       converted to native ASCII characters.

       Finally, share access modes are optionally checked against Netatalk AFP
       sharing modes by setting fruit:locking = netatalk.

       This module is not stackable other then described in this manpage.

OPTIONS

       fruit:resource = [ file | xattr | stream ]
           Controls where the OS X resource fork is stored:

           ·   file (default) - use a ._ AppleDouble file compatible with OS X
               and Netatalk

           ·   xattr - use a xattr, requires a filesystem with large xattr
               support and a file IO API compatible with xattrs, this boils
               down to Solaris and derived platforms and ZFS

           ·   stream - pass the stream on to the next module in the VFS stack

       fruit:metadata = [ stream | netatalk ]
           Controls where the OS X metadata stream is stored:

           ·   netatalk (default) - use Netatalk compatible xattr

           ·   stream - pass the stream on to the next module in the VFS stack

       fruit:locking = [ netatalk | none ]

           ·   none (default) - no cross protocol locking

           ·   netatalk - use cross protocol locking with Netatalk

       fruit:encoding = [ native | private ]
           Controls how the set of illegal NTFS ASCII character, commonly used
           by OS X clients, are stored in the filesystem:

           ·   private (default) - store characters as encoded by the OS X
               client: mapped to the Unicode private range

           ·   native - store characters with their native ASCII value

       fruit:aapl = yes | no
           A global option whether to enable Apple's SMB2+ extension codenamed
           AAPL. Default yes. This extension enhances several deficiencies
           when connecting from Macs:

           ·   directory enumeration is enriched with Mac relevant filesystem
               metadata (UNIX mode, FinderInfo, resource fork size and
               effective permission), as a result the Mac client doesn't need
               to fetch this metadata individuallly per directory entry
               resulting in an often tremendous performance increase.

           ·   The ability to query and modify the UNIX mode of directory
               entries.

       There's a set of per share options that can be used to disable the
       computation of specific Mac metadata in the directory enumeration
       context, all are enabled by default:

       ·   readdir_attr:aapl_rsize = true | false

       ·   readdir_attr:aapl_finder_info = true | false

       ·   readdir_attr:aapl_max_access = true | false

       fruit:nfs_aces = yes | no
           Whether support for querying and modifying the UNIX mode of
           directory entries via NFS ACEs is enabled, default yes.

       fruit:veto_appledouble = yes | no
           Whether ._ AppleDouble files are vetoed which prevents the client
           from seing and accessing internal AppleDouble files created by
           vfs_fruit itself for the purpose of storing a Mac resource fork.

           Vetoing ._ files may break some applications, eg extracting Mac ZIP
           archives from Mac clients failes, because they contain ._ files.
           Setting this option to false will fix this, but the abstraction
           leak of exposing the internally created ._ files may have other
           unknown side effects.

           The default is yes.

       fruit:copyfile = yes | no
           Whether to enable OS X specific copychunk ioctl that requests a
           copy of a whole file along with all attached metadata.

           WARNING: the copyfile request is blocking the client while the
           server does the copy.

           .             The default is no.

EXAMPLES

                   [share]
                vfs objects = catia fruit streams_xattr
                fruit:resource = file
                fruit:metadata = netatalk
                fruit:locking = netatalk
                fruit:encoding = native

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.