# SPDX-License-Identifier: GPL-2.0-only
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config NTFS_FS
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tristate "NTFS file system support"
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select NLS
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help
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NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
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Saying Y or M here enables read support. There is partial, but
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safe, write support available. For write support you must also
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say Y to "NTFS write support" below.
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There are also a number of user-space tools available, called
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ntfsprogs. These include ntfsundelete and ntfsresize, that work
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without NTFS support enabled in the kernel.
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This is a rewrite from scratch of Linux NTFS support and replaced
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the old NTFS code starting with Linux 2.5.11. A backport to
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the Linux 2.4 kernel series is separately available as a patch
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from the project web site.
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For more information see <file:Documentation/filesystems/ntfs.rst>
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and <http://www.linux-ntfs.org/>.
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To compile this file system support as a module, choose M here: the
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module will be called ntfs.
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If you are not using Windows NT, 2000, XP or 2003 in addition to
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Linux on your computer it is safe to say N.
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config NTFS_DEBUG
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bool "NTFS debugging support"
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depends on NTFS_FS
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help
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If you are experiencing any problems with the NTFS file system, say
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Y here. This will result in additional consistency checks to be
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performed by the driver as well as additional debugging messages to
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be written to the system log. Note that debugging messages are
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disabled by default. To enable them, supply the option debug_msgs=1
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at the kernel command line when booting the kernel or as an option
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to insmod when loading the ntfs module. Once the driver is active,
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you can enable debugging messages by doing (as root):
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echo 1 > /proc/sys/fs/ntfs-debug
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Replacing the "1" with "0" would disable debug messages.
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If you leave debugging messages disabled, this results in little
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overhead, but enabling debug messages results in very significant
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slowdown of the system.
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When reporting bugs, please try to have available a full dump of
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debugging messages while the misbehaviour was occurring.
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config NTFS_RW
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bool "NTFS write support"
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depends on NTFS_FS
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help
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This enables the partial, but safe, write support in the NTFS driver.
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The only supported operation is overwriting existing files, without
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changing the file length. No file or directory creation, deletion or
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renaming is possible. Note only non-resident files can be written to
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so you may find that some very small files (<500 bytes or so) cannot
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be written to.
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While we cannot guarantee that it will not damage any data, we have
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so far not received a single report where the driver would have
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damaged someones data so we assume it is perfectly safe to use.
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Note: While write support is safe in this version (a rewrite from
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scratch of the NTFS support), it should be noted that the old NTFS
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write support, included in Linux 2.5.10 and before (since 1997),
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is not safe.
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This is currently useful with TopologiLinux. TopologiLinux is run
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on top of any DOS/Microsoft Windows system without partitioning your
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hard disk. Unlike other Linux distributions TopologiLinux does not
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need its own partition. For more information see
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<http://topologi-linux.sourceforge.net/>
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It is perfectly safe to say N here.
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