1# SPDX-License-Identifier: GPL-2.0-only 2config NTFS_FS 3 tristate "NTFS file system support" 4 select BUFFER_HEAD 5 select NLS 6 help 7 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 8 9 Saying Y or M here enables read support. There is partial, but 10 safe, write support available. For write support you must also 11 say Y to "NTFS write support" below. 12 13 There are also a number of user-space tools available, called 14 ntfsprogs. These include ntfsundelete and ntfsresize, that work 15 without NTFS support enabled in the kernel. 16 17 This is a rewrite from scratch of Linux NTFS support and replaced 18 the old NTFS code starting with Linux 2.5.11. A backport to 19 the Linux 2.4 kernel series is separately available as a patch 20 from the project web site. 21 22 For more information see <file:Documentation/filesystems/ntfs.rst> 23 and <http://www.linux-ntfs.org/>. 24 25 To compile this file system support as a module, choose M here: the 26 module will be called ntfs. 27 28 If you are not using Windows NT, 2000, XP or 2003 in addition to 29 Linux on your computer it is safe to say N. 30 31config NTFS_DEBUG 32 bool "NTFS debugging support" 33 depends on NTFS_FS 34 help 35 If you are experiencing any problems with the NTFS file system, say 36 Y here. This will result in additional consistency checks to be 37 performed by the driver as well as additional debugging messages to 38 be written to the system log. Note that debugging messages are 39 disabled by default. To enable them, supply the option debug_msgs=1 40 at the kernel command line when booting the kernel or as an option 41 to insmod when loading the ntfs module. Once the driver is active, 42 you can enable debugging messages by doing (as root): 43 echo 1 > /proc/sys/fs/ntfs-debug 44 Replacing the "1" with "0" would disable debug messages. 45 46 If you leave debugging messages disabled, this results in little 47 overhead, but enabling debug messages results in very significant 48 slowdown of the system. 49 50 When reporting bugs, please try to have available a full dump of 51 debugging messages while the misbehaviour was occurring. 52 53config NTFS_RW 54 bool "NTFS write support" 55 depends on NTFS_FS 56 depends on PAGE_SIZE_LESS_THAN_64KB 57 help 58 This enables the partial, but safe, write support in the NTFS driver. 59 60 The only supported operation is overwriting existing files, without 61 changing the file length. No file or directory creation, deletion or 62 renaming is possible. Note only non-resident files can be written to 63 so you may find that some very small files (<500 bytes or so) cannot 64 be written to. 65 66 While we cannot guarantee that it will not damage any data, we have 67 so far not received a single report where the driver would have 68 damaged someones data so we assume it is perfectly safe to use. 69 70 Note: While write support is safe in this version (a rewrite from 71 scratch of the NTFS support), it should be noted that the old NTFS 72 write support, included in Linux 2.5.10 and before (since 1997), 73 is not safe. 74 75 This is currently useful with TopologiLinux. TopologiLinux is run 76 on top of any DOS/Microsoft Windows system without partitioning your 77 hard disk. Unlike other Linux distributions TopologiLinux does not 78 need its own partition. For more information see 79 <http://topologi-linux.sourceforge.net/> 80 81 It is perfectly safe to say N here. 82