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VFS_FRUIT(8) | System Administration tools | VFS_FRUIT(8) |
NAME¶
vfs_fruit - Enhanced OS X and Netatalk interoperabilitySYNOPSIS¶
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:
fruit:metadata = [ stream | netatalk ]
•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
Controls where the OS X metadata stream is stored:
fruit:locking = [ netatalk | none ]
•netatalk (default) - use Netatalk compatible
xattr
•stream - pass the stream on to the next module in
the VFS stack
•none (default) - no cross protocol locking
•netatalk - use cross protocol locking with
Netatalk
Controls how the set of illegal NTFS ASCII character,
commonly used by OS X clients, are stored in the filesystem:
fruit:aapl = yes | no
•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
A global option whether to enable Apple's SMB2+ extension
codenamed AAPL. Default yes. This extension enhances several
deficiencies when connecting from Macs:
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:
•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.
•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.11/12/2017 | Samba 4.2 |