ntfs-3gdevice mount_point[-o option[,...]] mount -t ntfs-3gdevice mount_point[-o option[,...]]
DESCRIPTION
ntfs-3g is an NTFS driver, which can
create, remove, rename, move files, directories, hard links, and
streams; it can read and write files, including
streams and sparse files; it can handle special files like
symbolic links, devices, and FIFOs; moreover it can also read
transparently compressed files.
Access Handling and Security
By default, files and directories are owned by the effective
user and group of the mounting process and everybody has
full read, write, execution and directory browsing permissions.
If you want to use permissions handling then use the
uid
and/or the
gid
options together with the
umask,
or
fmask
and
dmask
options.
Windows users have full access to the files created by
ntfs-3g.
If
ntfs-3g
is set setuid-root then non-root users will
be also able to mount block devices or via /etc/fstab if the 'user'
or 'users'
mount(8)
option is specified. The
ntfs-3g
process drops the
root privilege after successful mount and runs unprivileged
afterwards.
Windows Filename Compatibility
NTFS supports several filename namespaces: DOS, Win32 and POSIX. While the
ntfs-3g driver handles all of them, it always creates new files in the
POSIX namespace for maximum portability and interoperability reasons.
This means that filenames are case sensitive and all characters are
allowed except '/' and '\0'. This is perfectly legal on Windows, though
some application may get confused. If you find so then please report it
to the developer of the relevant Windows software.
Alternate Data Streams (ADS)
NTFS stores all data in streams. Every file has exactly one unnamed
data stream and can have many named data streams. The size of a file is the
size of its unnamed data stream. By default, ntfs-3g will only read
the unnamed data stream.
By using the options "streams_interface=windows", you will be able to read
any named data streams, simply by specifying the stream's name after a colon.
For example:
cat some.mp3:artist
Named data streams act like normals files, so you can read from them, write to
them and even delete them (using rm). You can list all the named data streams
a file has by getting the "ntfs.streams.list" extended attribute.
OPTIONS
Below is a summary of the options that ntfs-3g accepts.
uid=value and gid=value
Set the owner and the group of files and directories. The values are numerical.
The defaults are the uid and gid of the current process.
umask=value
Set the bitmask of the file and directory permissions that are not
present. The value is given in octal. The default value is 0 which
means full access to everybody.
fmask=value
Set the bitmask of the file permissions that are not present.
The value is given in octal. The default value is 0 which
means full access to everybody.
dmask=value
Set the bitmask of the directory permissions that are not
present. The value is given in octal. The default value is 0 which
means full access to everybody.
ro
Mount filesystem read-only.
locale=value
This option can be useful if your language specific locale environment
variables are not set correctly or at all in your operating system.
In such cases, the national characters can be made visible by using this
option. Please see more information about this topic at
http://ntfs-3g.org/support.html#locale
force
Force the mounting even if the NTFS logfile is unclean. The logfile
will be unconditionally cleared. Use this option with caution and for
your own responsibility.
show_sys_files
Show the system files in directory listings.
Otherwise the default behaviour is to hide the system files.
Please note that even when this option is specified, "$MFT"
may not be visible due to a glibc bug.
Furthermore, irrespectively of show_sys_files, all
files are accessible by name, for example you can always do
"ls -l '$UpCase'".
allow_other
This option overrides the security measure restricting file access
to the user mounting the filesystem. This option is only
allowed to root, but this restriction can be overridden by
the 'user_allow_other' option in the /etc/fuse.conf file.
max_read=value
With this option the maximum size of read operations can be set.
The default is infinite. Note that the size of read requests is
limited anyway to 32 pages (which is 128kbyte on i386).
silent
Do nothing on chmod and chown operations, but do not return error.
This option is on by default.
no_def_opts
By default ntfs-3g acts as "silent,allow_other" was passed to it,
this option cancel this behaviour.
streams_interface=value
This option controls how the user can access Alternate Data Streams (ADS)
or in other words, named data streams. It can be set
to, one of none, windows or xattr. If the option is set to
none, the user will have no access to the named data streams. If it's set
to windows, then the user can access them just like in Windows (eg. cat
file:stream). If it's set to xattr, then the named data streams are
mapped to xattrs and user can manipulate them using {get,set}fattr
utilities. The default is none.
debug
Makes ntfs-3g to not detach from terminal and print a lot of debug output from
libntfs-3g and FUSE.
no_detach
Same as above but with less debug output.
EXAMPLES
Mount /dev/hda1 to /mnt/windows:
ntfs-3g /dev/hda1 /mnt/windows
or
mount -t ntfs-3g /dev/hda1 /mnt/windows
Read-only mount /dev/hda5 to /home/user/mnt and make user with uid 1000
to be the owner of all files:
for common questions and known issues.
If you would find a new one in the latest release of
the software then please send an email describing it
in detail. You can contact the
development team on the ntfs-3g-devel@lists.sf.net
address.
AUTHORS
ntfs-3g
was based on and a major improvement to ntfsmount and libntfs which were
written by Yura Pakhuchiy and the Linux-NTFS team. The improvements were
made, the ntfs-3g project was initiated and currently led by long time
Linux-NTFS team developer Szabolcs Szakacsits (szaka@sienet.hu) to revive
the stalled open source development and project management.
THANKS
Several people made heroic efforts, often over five or more
years which resulted the ntfs-3g driver. Most importantly they are
Anton Altaparmakov, Richard Russon, Szabolcs Szakacsits, Yura Pakhuchiy,
Yuval Fledel, and the author of the groundbreaking FUSE filesystem development
framework, Miklos Szeredi.
