0001 # SPDX-License-Identifier: GPL-2.0-only
0002 config NTFS_FS
0003 tristate "NTFS file system support"
0004 select NLS
0005 help
0006 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
0007
0008 Saying Y or M here enables read support. There is partial, but
0009 safe, write support available. For write support you must also
0010 say Y to "NTFS write support" below.
0011
0012 There are also a number of user-space tools available, called
0013 ntfsprogs. These include ntfsundelete and ntfsresize, that work
0014 without NTFS support enabled in the kernel.
0015
0016 This is a rewrite from scratch of Linux NTFS support and replaced
0017 the old NTFS code starting with Linux 2.5.11. A backport to
0018 the Linux 2.4 kernel series is separately available as a patch
0019 from the project web site.
0020
0021 For more information see <file:Documentation/filesystems/ntfs.rst>
0022 and <http://www.linux-ntfs.org/>.
0023
0024 To compile this file system support as a module, choose M here: the
0025 module will be called ntfs.
0026
0027 If you are not using Windows NT, 2000, XP or 2003 in addition to
0028 Linux on your computer it is safe to say N.
0029
0030 config NTFS_DEBUG
0031 bool "NTFS debugging support"
0032 depends on NTFS_FS
0033 help
0034 If you are experiencing any problems with the NTFS file system, say
0035 Y here. This will result in additional consistency checks to be
0036 performed by the driver as well as additional debugging messages to
0037 be written to the system log. Note that debugging messages are
0038 disabled by default. To enable them, supply the option debug_msgs=1
0039 at the kernel command line when booting the kernel or as an option
0040 to insmod when loading the ntfs module. Once the driver is active,
0041 you can enable debugging messages by doing (as root):
0042 echo 1 > /proc/sys/fs/ntfs-debug
0043 Replacing the "1" with "0" would disable debug messages.
0044
0045 If you leave debugging messages disabled, this results in little
0046 overhead, but enabling debug messages results in very significant
0047 slowdown of the system.
0048
0049 When reporting bugs, please try to have available a full dump of
0050 debugging messages while the misbehaviour was occurring.
0051
0052 config NTFS_RW
0053 bool "NTFS write support"
0054 depends on NTFS_FS
0055 depends on PAGE_SIZE_LESS_THAN_64KB
0056 help
0057 This enables the partial, but safe, write support in the NTFS driver.
0058
0059 The only supported operation is overwriting existing files, without
0060 changing the file length. No file or directory creation, deletion or
0061 renaming is possible. Note only non-resident files can be written to
0062 so you may find that some very small files (<500 bytes or so) cannot
0063 be written to.
0064
0065 While we cannot guarantee that it will not damage any data, we have
0066 so far not received a single report where the driver would have
0067 damaged someones data so we assume it is perfectly safe to use.
0068
0069 Note: While write support is safe in this version (a rewrite from
0070 scratch of the NTFS support), it should be noted that the old NTFS
0071 write support, included in Linux 2.5.10 and before (since 1997),
0072 is not safe.
0073
0074 This is currently useful with TopologiLinux. TopologiLinux is run
0075 on top of any DOS/Microsoft Windows system without partitioning your
0076 hard disk. Unlike other Linux distributions TopologiLinux does not
0077 need its own partition. For more information see
0078 <http://topologi-linux.sourceforge.net/>
0079
0080 It is perfectly safe to say N here.
