1# SPDX-License-Identifier: GPL-2.0-only
2config FAT_FS
3	tristate
4	select NLS
5	help
6	  If you want to use one of the FAT-based file systems (the MS-DOS and
7	  VFAT (Windows 95) file systems), then you must say Y or M here
8	  to include FAT support. You will then be able to mount partitions or
9	  diskettes with FAT-based file systems and transparently access the
10	  files on them, i.e. MSDOS files will look and behave just like all
11	  other Unix files.
12
13	  This FAT support is not a file system in itself, it only provides
14	  the foundation for the other file systems. You will have to say Y or
15	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
16	  order to make use of it.
17
18	  Another way to read and write MSDOS floppies and hard drive
19	  partitions from within Linux (but not transparently) is with the
20	  mtools ("man mtools") program suite. You don't need to say Y here in
21	  order to do that.
22
23	  If you need to move large files on floppies between a DOS and a
24	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
25	  file system and use GNU tar's M option. GNU tar is a program
26	  available for Unix and DOS ("man tar" or "info tar").
27
28	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
29	  say Y.
30
31	  To compile this as a module, choose M here: the module will be called
32	  fat.  Note that if you compile the FAT support as a module, you
33	  cannot compile any of the FAT-based file systems into the kernel
34	  -- they will have to be modules as well.
35
36config MSDOS_FS
37	tristate "MSDOS fs support"
38	select FAT_FS
39	help
40	  This allows you to mount MSDOS partitions of your hard drive (unless
41	  they are compressed; to access compressed MSDOS partitions under
42	  Linux, you can either use the DOS emulator DOSEMU, described in the
43	  DOSEMU-HOWTO, available from
44	  <https://www.tldp.org/docs.html#howto>, or try dmsdosfs in
45	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
46	  intend to use dosemu with a non-compressed MSDOS partition, say Y
47	  here) and MSDOS floppies. This means that file access becomes
48	  transparent, i.e. the MSDOS files look and behave just like all
49	  other Unix files.
50
51	  If you have Windows 95 or Windows NT installed on your MSDOS
52	  partitions, you should use the VFAT file system (say Y to "VFAT fs
53	  support" below), or you will not be able to see the long filenames
54	  generated by Windows 95 / Windows NT.
55
56	  This option will enlarge your kernel by about 7 KB. If unsure,
57	  answer Y. This will only work if you said Y to "DOS FAT fs support"
58	  as well. To compile this as a module, choose M here: the module will
59	  be called msdos.
60
61config VFAT_FS
62	tristate "VFAT (Windows-95) fs support"
63	select FAT_FS
64	help
65	  This option provides support for normal Windows file systems with
66	  long filenames.  That includes non-compressed FAT-based file systems
67	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
68	  programs from the mtools package.
69
70	  The VFAT support enlarges your kernel by about 10 KB and it only
71	  works if you said Y to the "DOS FAT fs support" above.  Please read
72	  the file <file:Documentation/filesystems/vfat.rst> for details.  If
73	  unsure, say Y.
74
75	  To compile this as a module, choose M here: the module will be called
76	  vfat.
77
78config FAT_DEFAULT_CODEPAGE
79	int "Default codepage for FAT"
80	depends on FAT_FS
81	default 437
82	help
83	  This option should be set to the codepage of your FAT filesystems.
84	  It can be overridden with the "codepage" mount option.
85	  See <file:Documentation/filesystems/vfat.rst> for more information.
86
87config FAT_DEFAULT_IOCHARSET
88	string "Default iocharset for FAT"
89	depends on VFAT_FS
90	default "iso8859-1"
91	help
92	  Set this to the default input/output character set you'd
93	  like FAT to use. It should probably match the character set
94	  that most of your FAT filesystems use, and can be overridden
95	  with the "iocharset" mount option for FAT filesystems.
96	  Note that "utf8" is not recommended for FAT filesystems.
97	  If unsure, you shouldn't set "utf8" here - select the next option
98	  instead if you would like to use UTF-8 encoded file names by default.
99	  See <file:Documentation/filesystems/vfat.rst> for more information.
100
101	  Enable any character sets you need in File Systems/Native Language
102	  Support.
103
104config FAT_DEFAULT_UTF8
105	bool "Enable FAT UTF-8 option by default"
106	depends on VFAT_FS
107	default n
108	help
109	  Set this if you would like to have "utf8" mount option set
110	  by default when mounting FAT filesystems.
111
112	  Even if you say Y here can always disable UTF-8 for
113	  particular mount by adding "utf8=0" to mount options.
114
115	  Say Y if you use UTF-8 encoding for file names, N otherwise.
116
117	  See <file:Documentation/filesystems/vfat.rst> for more information.
118
119config FAT_KUNIT_TEST
120	tristate "Unit Tests for FAT filesystems" if !KUNIT_ALL_TESTS
121	depends on KUNIT && FAT_FS
122	default KUNIT_ALL_TESTS
123	help
124	  This builds the FAT KUnit tests
125
126	  For more information on KUnit and unit tests in general, please refer
127	  to the KUnit documentation in Documentation/dev-tools/kunit
128
129	  If unsure, say N
130