NTFSUSERMAP(8) System Manager's Manual NTFSUSERMAP(8)
NAME
ntfsusermap - NTFS Building a User Mapping File
SYNOPSIS
ntfsusermap windows-system-device [other-ntfs-device...]
Where windows-system-device is the device containing the Windows system
whose users are to be mapped to current Linux system.
And other-ntfs-device is another device containing files which are to be
accessed both by the Windows mentioned above and current Linux system.
the ntfsusermap command must be started as root, and the designated de-
vices must not be mounted.
Typing ntfsusermap with no args will display a summary of command argu-
ments.
DESCRIPTION
ntfsusermap creates the file defining the mapping of Windows accounts to
Linux logins for users who owns files which should be visible from both
Windows and Linux.
It relies on existing files which were created on Windows, trying to lo-
cate significant files and asking which Linux user or group should own
them. When a Linux owner or group is requested, the reply may be :
- the uid or gid (numeric or symbolic) of Linux owner or group of the
file.
In that situation, no more file with the same Windows owner will
be selected.
- or no answer, when not able to define the owner or group.
In that situation another file owned by the same Windows user or
group may be selected later so that a mapping can be defined.
The mappings for standard Windows users, such as "Administrator" or "All
Users" are defined implicitly. As a consequence a user mapping should
never be defined as Linux root.
When there are no more significant files, ntfsusermap create the mapping
file into the file UserMapping in the current directory. This file has
to be moved to the hidden directory .NTFS-3G in the root of all the NTFS
file systems to be shared between Windows and Linux. This requires the
file system to be mounted, but the created file will not be taken into
account if not present at mount time, which means the file system has to
be unmounted and mounted again for the new mapping file to be taken into
account.
OPTIONS
No option is defined for ntfsusermap.
EXAMPLES
Map the users defined on the Windows system present on /dev/sda1 :
ntfsusermap /dev/sda1
EXIT CODES
ntfsusermap exits with a value of 0 when no error was detected, and with
a value of 1 when an error was detected.
KNOWN ISSUES
Please see
https://github.com/tuxera/ntfs-3g/wiki/NTFS-3G-FAQ/
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-de-
vel@lists.sf.net address.
AUTHORS
ntfs-3g.secaudit has been developed by Jean-Pierre André.
THANKS
Several people made heroic efforts, often over five or more years which
resulted the ntfs-3g driver. Most importantly they are Anton Alta-
parmakov, Richard Russon, Szabolcs Szakacsits, Yura Pakhuchiy, Yuval
Fledel, and the author of the groundbreaking FUSE filesystem development
framework, Miklos Szeredi.
SEE ALSO
ntfsprogs(8), attr(5), getfattr(1)
ntfsusermap 1.2.0 February 2016 NTFSUSERMAP(8)
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