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