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NTFSMOUNT(8) NTFSMOUNT(8)
NAME
ntfsmount - NTFS module for FUSE.
SYNOPSIS
ntfsmount device mount_point [-o options]
DESCRIPTION
ntfsmount is a FUSE module that rely on libntfs. You need FUSE to com-
pile it, xattr is recommended, but not mandatory.
Fully implemented ntfsmount features:
· Read-write access to normal and sparse files.
· Read-only access to compressed files.
· Access to special Interix files (symlinks, devices, FIFOs).
· List/Read/Write/Add/Remove named data streams.
· Supports Linux and FreeBSD.
Partly implemented features:
· Create/Delete/Move files and directories.
· Hard link files.
OPTIONS
Below is a summary of all the options that ntfsmount accepts.
uid=, gid=, umask=
Provide default owner, group, and access mode mask. These
options work as documented in mount(8). By default, the
files/directories are owned by user that mounted volume and
he/she has read and write permissions, as well as browse permis-
sion for directories. No one else has any access permissions.
I.e. the mode on all files is by default rw------- and for
directories rwx------, a consequence of the default fmask=0177
and dmask=0077. Using a umask of zero will grant all permis-
sions to everyone, i.e. all files and directories will have mode
rwxrwxrwx.
fmask=, dmask=
Instead of specifying umask which applies both to files and
directories, fmask applies only to files and mask only to direc-
tories.
show_sys_files
If show_sys_files is specified, show the system files in direc-
tory listings. Otherwise the default behaviour is to hide the
system files. Note that even when show_sys_files is specified,
"$MFT" may will not be visible due to bugs/mis-features in
glibc. Further, note that irrespective of show_sys_files, all
files are accessible by name, i.e. you can always do "ls -l
'$UpCase'" for example to specifically show the system file con-
taining the Unicode upcase table.
default_permissions
By default FUSE doesn't check file access permissions, the
filesystem is free to implement it's access policy or leave it
to the underlying file access mechanism (e.g. in case of network
filesystems). This option enables permission checking,
restricting access based on file mode. This is option is usu-
ally useful together with the 'allow_other' mount option.
allow_other
This option overrides the security measure restricting file
access to the user mounting the filesystem. This option is by
default only allowed to root, but this restriction can be
removed with a configuration option described in the previous
section.
kernel_cache
(NOTE: Only for FUSE 2.3.0, with FUSE >= 2.4.0 on by default)
This option disables flushing the cache of the file contents on
every open(). This should only be enabled on filesystems, where
the file data is never changed externally (not through the
mounted FUSE filesystem). Thus it is not suitable for network
filesystems and other "intermediate" filesystems. NOTE: if this
option is not specified (and neither 'direct_io') data is still
cached after the open(), so a read() system call will not always
initiate a read operation.
large_read
Issue large read requests. This can improve performance for
some filesystems, but can also degrade performance. This option
is only useful on 2.4.X kernels, as on 2.6 kernels requests size
is automatically determined for optimum performance.
direct_io
(NOTE: Only for FUSE 2.3.0) This option disables the use of page
cache (file content cache) in the kernel for this filesystem.
This has several affects: - Each read() or write() system call
will initiate one or more read or write operations, data will
not be cached in the kernel. - The return value of the read()
and write() system calls will correspond to the return values of
the read and write operations. This is useful for example if
the file size is not known in advance (before reading it).
max_read=
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).
force Force mount even if errors occurred. Use this option only if you
know what are you doing and don't cry about data loss.
ro Mount filesystem read-only.
no_def_opts
By default ntfsmount acts as "default_permissions,allow_other"
was passed to it, this option cancel this behaviour.
silent Do nothing on chmod and chown operations, but do not return
error.
locale=
You can set locale with this option. It's useful if locale envi-
roment variables are not set before partitions from /etc/fstab
had been mounted.
streams_interface=
This option controls how the user can access 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.
debug Makes ntfsmount to not detach from terminal and print a lot of
debug output from libntfs and FUSE.
no_detach
Same as above but with less debug output.
DATA STREAMS
All data on NTFS is stored 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, ntfsmount
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
Windows applications don't, consistently, allow you to read named data
streams, so you are recommended to use tools like FAR, or utils from
Cygwin.
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. NOTE: This list feature is unique to the ntfsmount
and may never be supported by the kernel driver.
EXAMPLES
Mount /dev/hda1 to /mnt/ntfs-fuse using ntfsmount:
ntfsmount /dev/hda1 /mnt/ntfs-fuse
Read-only mount /dev/hda5 to /home/user/mnt and make user with uid 1000
to be owner of all files:
ntfsmount /dev/hda5 /home/user/mnt -o ro,uid=1000
/etc/fstab entry for above:
/dev/hda5 /home/user/mnt ntfs-fuse ro,uid=1000 0 0
Umount /mnt/ntfs-fuse:
fusermount -u /mnt/ntfs-fuse
Cat "artist" named data stream of "some.mp3":
cat some.mp3:artist
Write "Sympho Black Metal" to "genre" named data stream of "some.mp3":
echo Sympho Black Metal > some.mp3:genre
Remove "album" named data stream from "some.mp3":
rm some.mp3:album
List all named data streams for "some.mp3":
getfattr -n ntfs.streams.list some.mp3
BUGS
There are no known problems with ntfsmount. If you find a bug please
send an email describing the problem to the development team:
linux-ntfs-dev@lists.sourceforge.net
AUTHORS
ntfsmount was written by Yura Pakhuchiy, with contributions from Yuval
Fledel.
DEDICATION
With love to Marina Sapego.
THANKS
Many thanks to Miklos Szeredi for advice and answers about FUSE.
AVAILABILITY
ntfsmount is part of the ntfsprogs package and is available from:
http://www.linux-ntfs.org/content/view/19/37
The manual pages are available online at:
http://man.linux-ntfs.org/
SEE ALSO
ntfsprogs(8), attr(5), getfattr(1)
ntfsprogs 1.13.1 February 2006 NTFSMOUNT(8)
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Sat Sep 8 16:40:41 GMT 2007
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