Thomas Gleixner | ec8f24b | 2019-05-19 13:07:45 +0100 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 2 | config FAT_FS |
| 3 | tristate |
Christoph Hellwig | 925c86a | 2023-08-01 19:22:01 +0200 | [diff] [blame] | 4 | select BUFFER_HEAD |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 5 | select NLS |
Christoph Hellwig | 9636e65 | 2023-01-25 07:58:39 +0100 | [diff] [blame] | 6 | select LEGACY_DIRECT_IO |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 7 | help |
| 8 | If you want to use one of the FAT-based file systems (the MS-DOS and |
| 9 | VFAT (Windows 95) file systems), then you must say Y or M here |
| 10 | to include FAT support. You will then be able to mount partitions or |
| 11 | diskettes with FAT-based file systems and transparently access the |
| 12 | files on them, i.e. MSDOS files will look and behave just like all |
| 13 | other Unix files. |
| 14 | |
| 15 | This FAT support is not a file system in itself, it only provides |
| 16 | the foundation for the other file systems. You will have to say Y or |
| 17 | M to at least one of "MSDOS fs support" or "VFAT fs support" in |
| 18 | order to make use of it. |
| 19 | |
| 20 | Another way to read and write MSDOS floppies and hard drive |
| 21 | partitions from within Linux (but not transparently) is with the |
| 22 | mtools ("man mtools") program suite. You don't need to say Y here in |
| 23 | order to do that. |
| 24 | |
| 25 | If you need to move large files on floppies between a DOS and a |
| 26 | Linux box, say Y here, mount the floppy under Linux with an MSDOS |
| 27 | file system and use GNU tar's M option. GNU tar is a program |
| 28 | available for Unix and DOS ("man tar" or "info tar"). |
| 29 | |
| 30 | The FAT support will enlarge your kernel by about 37 KB. If unsure, |
| 31 | say Y. |
| 32 | |
| 33 | To compile this as a module, choose M here: the module will be called |
| 34 | fat. Note that if you compile the FAT support as a module, you |
| 35 | cannot compile any of the FAT-based file systems into the kernel |
| 36 | -- they will have to be modules as well. |
| 37 | |
| 38 | config MSDOS_FS |
| 39 | tristate "MSDOS fs support" |
| 40 | select FAT_FS |
| 41 | help |
| 42 | This allows you to mount MSDOS partitions of your hard drive (unless |
| 43 | they are compressed; to access compressed MSDOS partitions under |
| 44 | Linux, you can either use the DOS emulator DOSEMU, described in the |
| 45 | DOSEMU-HOWTO, available from |
Alexander A. Klimov | 4ecfed6 | 2020-08-11 18:35:59 -0700 | [diff] [blame] | 46 | <https://www.tldp.org/docs.html#howto>, or try dmsdosfs in |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 47 | <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you |
| 48 | intend to use dosemu with a non-compressed MSDOS partition, say Y |
| 49 | here) and MSDOS floppies. This means that file access becomes |
| 50 | transparent, i.e. the MSDOS files look and behave just like all |
| 51 | other Unix files. |
| 52 | |
| 53 | If you have Windows 95 or Windows NT installed on your MSDOS |
| 54 | partitions, you should use the VFAT file system (say Y to "VFAT fs |
| 55 | support" below), or you will not be able to see the long filenames |
| 56 | generated by Windows 95 / Windows NT. |
| 57 | |
| 58 | This option will enlarge your kernel by about 7 KB. If unsure, |
| 59 | answer Y. This will only work if you said Y to "DOS FAT fs support" |
| 60 | as well. To compile this as a module, choose M here: the module will |
| 61 | be called msdos. |
| 62 | |
| 63 | config VFAT_FS |
| 64 | tristate "VFAT (Windows-95) fs support" |
| 65 | select FAT_FS |
| 66 | help |
| 67 | This option provides support for normal Windows file systems with |
| 68 | long filenames. That includes non-compressed FAT-based file systems |
| 69 | used by Windows 95, Windows 98, Windows NT 4.0, and the Unix |
| 70 | programs from the mtools package. |
| 71 | |
| 72 | The VFAT support enlarges your kernel by about 10 KB and it only |
| 73 | works if you said Y to the "DOS FAT fs support" above. Please read |
Mauro Carvalho Chehab | 72ef5e5 | 2020-04-14 18:48:35 +0200 | [diff] [blame] | 74 | the file <file:Documentation/filesystems/vfat.rst> for details. If |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 75 | unsure, say Y. |
| 76 | |
| 77 | To compile this as a module, choose M here: the module will be called |
| 78 | vfat. |
| 79 | |
| 80 | config FAT_DEFAULT_CODEPAGE |
| 81 | int "Default codepage for FAT" |
David Gow | b0d4ada | 2021-04-15 23:56:23 -0700 | [diff] [blame] | 82 | depends on FAT_FS |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 83 | default 437 |
| 84 | help |
| 85 | This option should be set to the codepage of your FAT filesystems. |
| 86 | It can be overridden with the "codepage" mount option. |
Mauro Carvalho Chehab | 72ef5e5 | 2020-04-14 18:48:35 +0200 | [diff] [blame] | 87 | See <file:Documentation/filesystems/vfat.rst> for more information. |
Alexey Dobriyan | 1c6ace0 | 2009-01-22 10:37:59 +0300 | [diff] [blame] | 88 | |
| 89 | config FAT_DEFAULT_IOCHARSET |
| 90 | string "Default iocharset for FAT" |
| 91 | depends on VFAT_FS |
| 92 | default "iso8859-1" |
| 93 | help |
| 94 | Set this to the default input/output character set you'd |
| 95 | like FAT to use. It should probably match the character set |
| 96 | that most of your FAT filesystems use, and can be overridden |
| 97 | with the "iocharset" mount option for FAT filesystems. |
| 98 | Note that "utf8" is not recommended for FAT filesystems. |
Maciej S. Szmigiero | 3873938 | 2016-03-22 14:25:30 -0700 | [diff] [blame] | 99 | If unsure, you shouldn't set "utf8" here - select the next option |
| 100 | instead if you would like to use UTF-8 encoded file names by default. |
Mauro Carvalho Chehab | 72ef5e5 | 2020-04-14 18:48:35 +0200 | [diff] [blame] | 101 | See <file:Documentation/filesystems/vfat.rst> for more information. |
Alan Cox | d29a2e9 | 2009-04-17 12:22:35 +0100 | [diff] [blame] | 102 | |
| 103 | Enable any character sets you need in File Systems/Native Language |
| 104 | Support. |
Maciej S. Szmigiero | 3873938 | 2016-03-22 14:25:30 -0700 | [diff] [blame] | 105 | |
| 106 | config FAT_DEFAULT_UTF8 |
| 107 | bool "Enable FAT UTF-8 option by default" |
| 108 | depends on VFAT_FS |
| 109 | default n |
| 110 | help |
| 111 | Set this if you would like to have "utf8" mount option set |
| 112 | by default when mounting FAT filesystems. |
| 113 | |
| 114 | Even if you say Y here can always disable UTF-8 for |
| 115 | particular mount by adding "utf8=0" to mount options. |
| 116 | |
| 117 | Say Y if you use UTF-8 encoding for file names, N otherwise. |
| 118 | |
Mauro Carvalho Chehab | 72ef5e5 | 2020-04-14 18:48:35 +0200 | [diff] [blame] | 119 | See <file:Documentation/filesystems/vfat.rst> for more information. |
David Gow | b0d4ada | 2021-04-15 23:56:23 -0700 | [diff] [blame] | 120 | |
| 121 | config FAT_KUNIT_TEST |
| 122 | tristate "Unit Tests for FAT filesystems" if !KUNIT_ALL_TESTS |
| 123 | depends on KUNIT && FAT_FS |
| 124 | default KUNIT_ALL_TESTS |
| 125 | help |
| 126 | This builds the FAT KUnit tests |
| 127 | |
| 128 | For more information on KUnit and unit tests in general, please refer |
| 129 | to the KUnit documentation in Documentation/dev-tools/kunit |
| 130 | |
| 131 | If unsure, say N |