blob: b97be8b22e6dc2bd9ce2eb693ae3128f9f7a7bd1 [file] [log] [blame]
Eric Andersenc9f20d92002-12-05 08:41:41 +00001#
2# For a description of the syntax of this configuration file,
3# see scripts/kbuild/config-language.txt.
4#
5
6menu "Linux System Utilities"
7
Denis Vlasenkod16950d2008-11-29 09:05:50 +00008config ACPID
9 bool "acpid"
10 default n
11 help
12 acpid listens to ACPI events coming either in textual form from
13 /proc/acpi/event (though it is marked deprecated it is still widely
14 used and _is_ a standard) or in binary form from specified evdevs
15 (just use /dev/input/event*).
16
17 It parses the event to retrieve ACTION and a possible PARAMETER.
18 It then spawns /etc/acpi/<ACTION>[/<PARAMETER>] either via run-parts
19 (if the resulting path is a directory) or directly as an executable.
20
21 N.B. acpid relies on run-parts so have the latter installed.
22
23config FEATURE_ACPID_COMPAT
24 bool "Accept and ignore redundant options"
25 default n
26 depends on ACPID
27 help
28 Accept and ignore compatibility options -g -m -s -S -v.
29
Denis Vlasenko1e19afd2008-10-12 11:20:08 +000030config BLKID
31 bool "blkid"
32 default n
33 select VOLUMEID
34 help
35 Lists labels and UUIDs of all filesystems.
36 WARNING:
37 With all submodules selected, it will add ~8k to busybox.
38
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000039config DMESG
Eric Andersenc9f20d92002-12-05 08:41:41 +000040 bool "dmesg"
41 default n
42 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000043 dmesg is used to examine or control the kernel ring buffer. When the
Eric Andersena0ac4522003-02-27 03:14:04 +000044 Linux kernel prints messages to the system log, they are stored in
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000045 the kernel ring buffer. You can use dmesg to print the kernel's ring
Eric Andersena0ac4522003-02-27 03:14:04 +000046 buffer, clear the kernel ring buffer, change the size of the kernel
47 ring buffer, and change the priority level at which kernel messages
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000048 are also logged to the system console. Enable this option if you
Eric Andersena0ac4522003-02-27 03:14:04 +000049 wish to enable the 'dmesg' utility.
Eric Andersenc9f20d92002-12-05 08:41:41 +000050
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000051config FEATURE_DMESG_PRETTY
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +000052 bool "Pretty dmesg output"
Rob Landley446129a2006-07-27 16:40:55 +000053 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000054 depends on DMESG
Rob Landley446129a2006-07-27 16:40:55 +000055 help
56 If you wish to scrub the syslog level from the output, say 'Y' here.
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000057 The syslog level is a string prefixed to every line with the form
58 "<#>".
Rob Landley446129a2006-07-27 16:40:55 +000059
60 With this option you will see:
61 # dmesg
62 Linux version 2.6.17.4 .....
63 BIOS-provided physical RAM map:
64 BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
65
66 Without this option you will see:
67 # dmesg
68 <5>Linux version 2.6.17.4 .....
69 <6>BIOS-provided physical RAM map:
70 <6> BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
71
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000072config FBSET
Eric Andersenc9f20d92002-12-05 08:41:41 +000073 bool "fbset"
74 default n
75 help
Eric Andersena0ac4522003-02-27 03:14:04 +000076 fbset is used to show or change the settings of a Linux frame buffer
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000077 device. The frame buffer device provides a simple and unique
78 interface to access a graphics display. Enable this option
Eric Andersen88c916b2003-10-22 09:58:56 +000079 if you wish to enable the 'fbset' utility.
Eric Andersena0ac4522003-02-27 03:14:04 +000080
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000081config FEATURE_FBSET_FANCY
Rob Landley2ec922e2006-04-13 23:22:16 +000082 bool "Turn on extra fbset options"
Eric Andersenc9f20d92002-12-05 08:41:41 +000083 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000084 depends on FBSET
Eric Andersenc9f20d92002-12-05 08:41:41 +000085 help
Eric Andersena0ac4522003-02-27 03:14:04 +000086 This option enables extended fbset options, allowing one to set the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000087 framebuffer size, color depth, etc. interface to access a graphics
88 display. Enable this option if you wish to enable extended fbset
Eric Andersena0ac4522003-02-27 03:14:04 +000089 options.
Eric Andersenc9f20d92002-12-05 08:41:41 +000090
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000091config FEATURE_FBSET_READMODE
Rob Landley2ec922e2006-04-13 23:22:16 +000092 bool "Turn on fbset readmode support"
Eric Andersenc9f20d92002-12-05 08:41:41 +000093 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000094 depends on FBSET
Eric Andersenc9f20d92002-12-05 08:41:41 +000095 help
Eric Andersena0ac4522003-02-27 03:14:04 +000096 This option allows fbset to read the video mode database stored by
97 default as /etc/fb.modes, which can be used to set frame buffer
98 device to pre-defined video modes.
Eric Andersenc9f20d92002-12-05 08:41:41 +000099
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000100config FDFLUSH
Eric Andersenc9f20d92002-12-05 08:41:41 +0000101 bool "fdflush"
102 default n
103 help
Eric Andersen88c916b2003-10-22 09:58:56 +0000104 fdflush is only needed when changing media on slightly-broken
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000105 removable media drives. It is used to make Linux believe that a
Eric Andersena0ac4522003-02-27 03:14:04 +0000106 hardware disk-change switch has been actuated, which causes Linux to
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000107 forget anything it has cached from the previous media. If you have
Eric Andersena0ac4522003-02-27 03:14:04 +0000108 such a slightly-broken drive, you will need to run fdflush every time
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000109 you change a disk. Most people have working hardware and can safely
Eric Andersen88c916b2003-10-22 09:58:56 +0000110 leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000111
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000112config FDFORMAT
Eric Andersen01c3d402003-07-05 07:51:31 +0000113 bool "fdformat"
114 default n
115 help
Eric Andersen88c916b2003-10-22 09:58:56 +0000116 fdformat is used to low-level format a floppy disk.
Eric Andersen01c3d402003-07-05 07:51:31 +0000117
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000118config FDISK
Eric Andersenc9f20d92002-12-05 08:41:41 +0000119 bool "fdisk"
120 default n
121 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000122 The fdisk utility is used to divide hard disks into one or more
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000123 logical disks, which are generally called partitions. This utility
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000124 can be used to list and edit the set of partitions or BSD style
Eric Andersena0ac4522003-02-27 03:14:04 +0000125 'disk slices' that are defined on a hard drive.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000126
Eric Andersen84bdea82004-05-19 10:49:17 +0000127config FDISK_SUPPORT_LARGE_DISKS
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000128 bool "Support over 4GB disks"
Eric Andersen84bdea82004-05-19 10:49:17 +0000129 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000130 depends on FDISK
Eric Andersen84bdea82004-05-19 10:49:17 +0000131 help
132 Enable this option to support large disks > 4GB.
133
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000134config FEATURE_FDISK_WRITABLE
Rob Landley2ec922e2006-04-13 23:22:16 +0000135 bool "Write support"
Glenn L McGrath4dcc2dd2003-01-04 11:56:06 +0000136 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000137 depends on FDISK
Glenn L McGrath4dcc2dd2003-01-04 11:56:06 +0000138 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000139 Enabling this option allows you to create or change a partition table
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000140 and write those changes out to disk. If you leave this option
Eric Andersena0ac4522003-02-27 03:14:04 +0000141 disabled, you will only be able to view the partition table.
Glenn L McGrath4dcc2dd2003-01-04 11:56:06 +0000142
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000143config FEATURE_AIX_LABEL
Rob Landley2ec922e2006-04-13 23:22:16 +0000144 bool "Support AIX disklabels"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000145 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000146 depends on FDISK && FEATURE_FDISK_WRITABLE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000147 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000148 Enabling this option allows you to create or change AIX disklabels.
149 Most people can safely leave this option disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000150
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000151config FEATURE_SGI_LABEL
Rob Landley2ec922e2006-04-13 23:22:16 +0000152 bool "Support SGI disklabels"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000153 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000154 depends on FDISK && FEATURE_FDISK_WRITABLE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000155 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000156 Enabling this option allows you to create or change SGI disklabels.
157 Most people can safely leave this option disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000158
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000159config FEATURE_SUN_LABEL
Rob Landley2ec922e2006-04-13 23:22:16 +0000160 bool "Support SUN disklabels"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000161 default n
Mike Frysinger71a6a4e2007-01-24 08:24:43 +0000162 depends on FDISK && FEATURE_FDISK_WRITABLE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000163 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000164 Enabling this option allows you to create or change SUN disklabels.
165 Most people can safely leave this option disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000166
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000167config FEATURE_OSF_LABEL
Rob Landley2ec922e2006-04-13 23:22:16 +0000168 bool "Support BSD disklabels"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000169 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000170 depends on FDISK && FEATURE_FDISK_WRITABLE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000171 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000172 Enabling this option allows you to create or change BSD disklabels
173 and define and edit BSD disk slices.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000174
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000175config FEATURE_FDISK_ADVANCED
Rob Landley2ec922e2006-04-13 23:22:16 +0000176 bool "Support expert mode"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000177 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000178 depends on FDISK && FEATURE_FDISK_WRITABLE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000179 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000180 Enabling this option allows you to do terribly unsafe things like
181 define arbitrary drive geometry, move the beginning of data in a
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000182 partition, and similarly evil things. Unless you have a very good
Eric Andersena0ac4522003-02-27 03:14:04 +0000183 reason you would be wise to leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000184
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000185config FINDFS
186 bool "findfs"
187 default n
188 select VOLUMEID
189 help
Denis Vlasenko22d10a02008-10-13 08:53:43 +0000190 Prints the name of a filesystem with given label or UUID.
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000191 WARNING:
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000192 With all submodules selected, it will add ~8k to busybox.
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000193
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000194config FREERAMDISK
Eric Andersenc9f20d92002-12-05 08:41:41 +0000195 bool "freeramdisk"
196 default n
197 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000198 Linux allows you to create ramdisks. This utility allows you to
Eric Andersena0ac4522003-02-27 03:14:04 +0000199 delete them and completely free all memory that was used for the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000200 ramdisk. For example, if you boot Linux into a ramdisk and later
Eric Andersena0ac4522003-02-27 03:14:04 +0000201 pivot_root, you may want to free the memory that is allocated to the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000202 ramdisk. If you have no use for freeing memory from a ramdisk, leave
Eric Andersena0ac4522003-02-27 03:14:04 +0000203 this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000204
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000205config FSCK_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000206 bool "fsck_minix"
207 default n
208 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000209 The minix filesystem is a nice, small, compact, read-write filesystem
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000210 with little overhead. It is not a journaling filesystem however and
Eric Andersen88c916b2003-10-22 09:58:56 +0000211 can experience corruption if it is not properly unmounted or if the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000212 power goes off in the middle of a write. This utility allows you to
Eric Andersena0ac4522003-02-27 03:14:04 +0000213 check for and attempt to repair any corruption that occurs to a minix
214 filesystem.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000215
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000216config MKFS_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000217 bool "mkfs_minix"
218 default n
219 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000220 The minix filesystem is a nice, small, compact, read-write filesystem
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000221 with little overhead. If you wish to be able to create minix
222 filesystems this utility will do the job for you.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000223
224comment "Minix filesystem support"
Mike Frysinger71a6a4e2007-01-24 08:24:43 +0000225 depends on FSCK_MINIX || MKFS_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000226
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000227config FEATURE_MINIX2
Rob Landley2ec922e2006-04-13 23:22:16 +0000228 bool "Support Minix fs v2 (fsck_minix/mkfs_minix)"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000229 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000230 depends on FSCK_MINIX || MKFS_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000231 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000232 If you wish to be able to create version 2 minix filesystems, enable
233 this. If you enabled 'mkfs_minix' then you almost certainly want to
234 be using the version 2 filesystem support.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000235
Denis Vlasenko9d04b6b2009-03-28 02:13:01 +0000236config MKFS_VFAT
237 bool "mkfs_vfat"
238 default n
239 help
240 Utility to create FAT32 filesystems.
241
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000242config GETOPT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000243 bool "getopt"
244 default n
245 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000246 The getopt utility is used to break up (parse) options in command
247 lines to make it easy to write complex shell scripts that also check
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000248 for legal (and illegal) options. If you want to write horribly
Eric Andersena0ac4522003-02-27 03:14:04 +0000249 complex shell scripts, or use some horribly complex shell script
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000250 written by others, this utility may be for you. Most people will
Eric Andersena0ac4522003-02-27 03:14:04 +0000251 wisely leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000252
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200253config FEATURE_GETOPT_LONG
254 bool "Support option -l"
255 default y if LONG_OPTS
256 help
257 Enable support for recognising long options using the -l option to
258 getopt.
259
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000260config HEXDUMP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000261 bool "hexdump"
262 default n
263 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000264 The hexdump utility is used to display binary data in a readable
265 way that is comparable to the output from most hex editors.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000266
Denis Vlasenkofbe5f392007-11-18 05:36:50 +0000267config FEATURE_HEXDUMP_REVERSE
268 bool "Support -R, reverse of 'hexdump -Cv'"
269 default n
270 depends on HEXDUMP
271 help
272 The hexdump utility is used to display binary data in an ascii
273 readable way. This option creates binary data from an ascii input.
274 NB: this option is non-standard. It's unwise to use it in scripts
275 aimed to be portable.
276
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000277config HD
278 bool "hd"
279 default n
280 select HEXDUMP
281 help
282 hd is an alias to hexdump -C.
283
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000284config HWCLOCK
Eric Andersenc9f20d92002-12-05 08:41:41 +0000285 bool "hwclock"
286 default n
287 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000288 The hwclock utility is used to read and set the hardware clock
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000289 on a system. This is primarily used to set the current time on
Eric Andersen88c916b2003-10-22 09:58:56 +0000290 shutdown in the hardware clock, so the hardware will keep the
291 correct time when Linux is _not_ running.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000292
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000293config FEATURE_HWCLOCK_LONG_OPTIONS
Rob Landley2ec922e2006-04-13 23:22:16 +0000294 bool "Support long options (--hctosys,...)"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000295 default n
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200296 depends on HWCLOCK && LONG_OPTS
Eric Andersenc9f20d92002-12-05 08:41:41 +0000297 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000298 By default, the hwclock utility only uses short options. If you
Eric Andersen88c916b2003-10-22 09:58:56 +0000299 are overly fond of its long options, such as --hctosys, --utc, etc)
Eric Andersena0ac4522003-02-27 03:14:04 +0000300 then enable this option.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000301
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000302config FEATURE_HWCLOCK_ADJTIME_FHS
Rob Landley2ec922e2006-04-13 23:22:16 +0000303 bool "Use FHS /var/lib/hwclock/adjtime"
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000304 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000305 depends on HWCLOCK
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000306 help
307 Starting with FHS 2.3, the adjtime state file is supposed to exist
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000308 at /var/lib/hwclock/adjtime instead of /etc/adjtime. If you wish
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000309 to use the FHS behavior, answer Y here, otherwise answer N for the
310 classic /etc/adjtime path.
311
Bernhard Reutner-Fischere99a92d2008-07-22 18:32:06 +0000312 pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000313
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000314config IPCRM
Rob Landley6eb1e412005-06-20 04:30:36 +0000315 bool "ipcrm"
316 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000317 select FEATURE_SUID
Rob Landley6eb1e412005-06-20 04:30:36 +0000318 help
319 The ipcrm utility allows the removal of System V interprocess
320 communication (IPC) objects and the associated data structures
321 from the system.
322
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000323config IPCS
Rob Landley6eb1e412005-06-20 04:30:36 +0000324 bool "ipcs"
325 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000326 select FEATURE_SUID
Rob Landley6eb1e412005-06-20 04:30:36 +0000327 help
328 The ipcs utility is used to provide information on the currently
329 allocated System V interprocess (IPC) objects in the system.
330
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000331config LOSETUP
Mike Frysinger75aa1922005-09-24 23:12:38 +0000332 bool "losetup"
333 default n
334 help
335 losetup is used to associate or detach a loop device with a regular
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000336 file or block device, and to query the status of a loop device. This
Mike Frysinger75aa1922005-09-24 23:12:38 +0000337 version does not currently support enabling data encryption.
338
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000339config MDEV
Rob Landley70f7ef72005-12-13 08:21:33 +0000340 bool "mdev"
341 default n
342 help
Mike Frysingerae302102007-02-14 13:20:29 +0000343 mdev is a mini-udev implementation for dynamically creating device
344 nodes in the /dev directory.
345
346 For more information, please see docs/mdev.txt
Rob Landley70f7ef72005-12-13 08:21:33 +0000347
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000348config FEATURE_MDEV_CONF
Rob Landley2ec922e2006-04-13 23:22:16 +0000349 bool "Support /etc/mdev.conf"
Rob Landley70f7ef72005-12-13 08:21:33 +0000350 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000351 depends on MDEV
Rob Landley70f7ef72005-12-13 08:21:33 +0000352 help
Mike Frysingerae302102007-02-14 13:20:29 +0000353 Add support for the mdev config file to control ownership and
354 permissions of the device nodes.
Rob Landley70f7ef72005-12-13 08:21:33 +0000355
Mike Frysingerae302102007-02-14 13:20:29 +0000356 For more information, please see docs/mdev.txt
Rob Landley70f7ef72005-12-13 08:21:33 +0000357
Mike Frysingerf0044c42008-02-01 06:53:50 +0000358config FEATURE_MDEV_RENAME
359 bool "Support subdirs/symlinks"
360 default n
361 depends on FEATURE_MDEV_CONF
362 help
363 Add support for renaming devices and creating symlinks.
364
365 For more information, please see docs/mdev.txt
366
Denis Vlasenkof2f38682008-03-29 17:26:10 +0000367config FEATURE_MDEV_RENAME_REGEXP
368 bool "Support regular expressions substitutions when renaming device"
369 default n
370 depends on FEATURE_MDEV_RENAME
371 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000372 Add support for regular expressions substitutions when renaming
373 device.
Denis Vlasenkof2f38682008-03-29 17:26:10 +0000374
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000375config FEATURE_MDEV_EXEC
Rob Landleyef10d522006-06-26 14:11:33 +0000376 bool "Support command execution at device addition/removal"
377 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000378 depends on FEATURE_MDEV_CONF
Rob Landleyef10d522006-06-26 14:11:33 +0000379 help
Mike Frysingerae302102007-02-14 13:20:29 +0000380 This adds support for an optional field to /etc/mdev.conf for
381 executing commands when devices are created/removed.
Rob Landleyef10d522006-06-26 14:11:33 +0000382
Mike Frysingerae302102007-02-14 13:20:29 +0000383 For more information, please see docs/mdev.txt
Rob Landleyef10d522006-06-26 14:11:33 +0000384
Mike Frysingera78ef2c2007-06-13 07:34:15 +0000385config FEATURE_MDEV_LOAD_FIRMWARE
386 bool "Support loading of firmwares"
387 default n
388 depends on MDEV
389 help
390 Some devices need to load firmware before they can be usable.
391
392 These devices will request userspace look up the files in
393 /lib/firmware/ and if it exists, send it to the kernel for
394 loading into the hardware.
395
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000396config MKSWAP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000397 bool "mkswap"
398 default n
399 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000400 The mkswap utility is used to configure a file or disk partition as
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000401 Linux swap space. This allows Linux to use the entire file or
Eric Andersena0ac4522003-02-27 03:14:04 +0000402 partition as if it were additional RAM, which can greatly increase
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000403 the capability of low-memory machines. This additional memory is
Eric Andersena0ac4522003-02-27 03:14:04 +0000404 much slower than real RAM, but can be very helpful at preventing your
Eric Andersen88c916b2003-10-22 09:58:56 +0000405 applications being killed by the Linux out of memory (OOM) killer.
406 Once you have created swap space using 'mkswap' you need to enable
407 the swap space using the 'swapon' utility.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000408
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000409config FEATURE_MKSWAP_V0
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000410 bool "Version 0 support"
Bernhard Reutner-Fischer56dd0bf2006-03-29 17:32:24 +0000411 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000412 depends on MKSWAP
413# depends on MKSWAP && DEPRECATED
Bernhard Reutner-Fischer56dd0bf2006-03-29 17:32:24 +0000414 help
415 Enable support for the old v0 style.
416 If your kernel is older than 2.1.117, then v0 support is the
417 only option.
418
Denys Vlasenkobeca96f2009-06-19 13:14:48 +0200419config FEATURE_MKSWAP_UUID
420 bool "UUID support"
421 default n
422 depends on MKSWAP
423 help
424 Generate swap spaces with universally unique identifiers.
425
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000426config MORE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000427 bool "more"
428 default n
429 help
Eric Andersen88c916b2003-10-22 09:58:56 +0000430 more is a simple utility which allows you to read text one screen
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000431 sized page at a time. If you want to read text that is larger than
Eric Andersena0ac4522003-02-27 03:14:04 +0000432 the screen, and you are using anything faster than a 300 baud modem,
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000433 you will probably find this utility very helpful. If you don't have
Eric Andersena0ac4522003-02-27 03:14:04 +0000434 any need to reading text files, you can leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000435
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000436config FEATURE_USE_TERMIOS
Rob Landley2ec922e2006-04-13 23:22:16 +0000437 bool "Use termios to manipulate the screen"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000438 default y
Paul Fox9e1f92d2008-03-20 16:04:36 +0000439 depends on MORE || TOP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000440 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000441 This option allows utilities such as 'more' and 'top' to determine
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000442 the size of the screen. If you leave this disabled, your utilities
Eric Andersen88c916b2003-10-22 09:58:56 +0000443 that display things on the screen will be especially primitive and
Eric Andersena0ac4522003-02-27 03:14:04 +0000444 will be unable to determine the current screen size, and will be
445 unable to move the cursor.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000446
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000447config VOLUMEID
Denis Vlasenko35a064b2008-11-06 00:49:59 +0000448 bool #No description makes it a hidden option
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000449 default n
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000450
451config FEATURE_VOLUMEID_EXT
452 bool "Ext filesystem"
453 default n
454 depends on VOLUMEID
455 help
456 TODO
457
458config FEATURE_VOLUMEID_REISERFS
459 bool "Reiser filesystem"
460 default n
461 depends on VOLUMEID
462 help
463 TODO
464
465config FEATURE_VOLUMEID_FAT
466 bool "fat filesystem"
467 default n
468 depends on VOLUMEID
469 help
470 TODO
471
472config FEATURE_VOLUMEID_HFS
473 bool "hfs filesystem"
474 default n
475 depends on VOLUMEID
476 help
477 TODO
478
479config FEATURE_VOLUMEID_JFS
480 bool "jfs filesystem"
481 default n
482 depends on VOLUMEID
483 help
484 TODO
485
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000486### config FEATURE_VOLUMEID_UFS
487### bool "ufs filesystem"
488### default n
489### depends on VOLUMEID
490### help
491### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000492
493config FEATURE_VOLUMEID_XFS
494 bool "xfs filesystem"
495 default n
496 depends on VOLUMEID
497 help
498 TODO
499
500config FEATURE_VOLUMEID_NTFS
501 bool "ntfs filesystem"
502 default n
503 depends on VOLUMEID
504 help
505 TODO
506
507config FEATURE_VOLUMEID_ISO9660
508 bool "iso9660 filesystem"
509 default n
510 depends on VOLUMEID
511 help
512 TODO
513
514config FEATURE_VOLUMEID_UDF
515 bool "udf filesystem"
516 default n
517 depends on VOLUMEID
518 help
519 TODO
520
521config FEATURE_VOLUMEID_LUKS
522 bool "luks filesystem"
523 default n
524 depends on VOLUMEID
525 help
526 TODO
527
528config FEATURE_VOLUMEID_LINUXSWAP
529 bool "linux swap filesystem"
530 default n
531 depends on VOLUMEID
532 help
533 TODO
534
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000535### config FEATURE_VOLUMEID_LVM
536### bool "lvm"
537### default n
538### depends on VOLUMEID
539### help
540### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000541
542config FEATURE_VOLUMEID_CRAMFS
543 bool "cramfs filesystem"
544 default n
545 depends on VOLUMEID
546 help
547 TODO
548
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000549### config FEATURE_VOLUMEID_HPFS
550### bool "hpfs filesystem"
551### default n
552### depends on VOLUMEID
553### help
554### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000555
556config FEATURE_VOLUMEID_ROMFS
557 bool "romfs filesystem"
558 default n
559 depends on VOLUMEID
560 help
561 TODO
562
563config FEATURE_VOLUMEID_SYSV
564 bool "sysv filesystem"
565 default n
566 depends on VOLUMEID
567 help
568 TODO
569
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000570### config FEATURE_VOLUMEID_MINIX
571### bool "minix filesystem"
572### default n
573### depends on VOLUMEID
574### help
575### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000576
Denis Vlasenkoc5b73722008-03-17 09:21:26 +0000577### These only detect partition tables - not used (yet?)
578### config FEATURE_VOLUMEID_MAC
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000579### bool "mac filesystem"
580### default n
581### depends on VOLUMEID
582### help
583### TODO
Denis Vlasenko1f228982008-04-22 00:16:29 +0000584###
Denis Vlasenkoc5b73722008-03-17 09:21:26 +0000585### config FEATURE_VOLUMEID_MSDOS
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000586### bool "msdos filesystem"
587### default n
588### depends on VOLUMEID
589### help
590### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000591
592config FEATURE_VOLUMEID_OCFS2
593 bool "ocfs2 filesystem"
594 default n
595 depends on VOLUMEID
596 help
597 TODO
598
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000599### config FEATURE_VOLUMEID_HIGHPOINTRAID
600### bool "highpoint raid"
601### default n
602### depends on VOLUMEID
603### help
604### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000605
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000606### config FEATURE_VOLUMEID_ISWRAID
607### bool "intel raid"
608### default n
609### depends on VOLUMEID
610### help
611### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000612
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000613### config FEATURE_VOLUMEID_LSIRAID
614### bool "lsi raid"
615### default n
616### depends on VOLUMEID
617### help
618### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000619
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000620### config FEATURE_VOLUMEID_VIARAID
621### bool "via raid"
622### default n
623### depends on VOLUMEID
624### help
625### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000626
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000627### config FEATURE_VOLUMEID_SILICONRAID
628### bool "silicon raid"
629### default n
630### depends on VOLUMEID
631### help
632### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000633
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000634### config FEATURE_VOLUMEID_NVIDIARAID
635### bool "nvidia raid"
636### default n
637### depends on VOLUMEID
638### help
639### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000640
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000641### config FEATURE_VOLUMEID_PROMISERAID
642### bool "promise raid"
643### default n
644### depends on VOLUMEID
645### help
646### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000647
648config FEATURE_VOLUMEID_LINUXRAID
649 bool "linuxraid"
650 default n
651 depends on VOLUMEID
652 help
653 TODO
654
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000655config MOUNT
Mike Frysinger55092282006-02-02 23:14:57 +0000656 bool "mount"
657 default n
658 help
659 All files and filesystems in Unix are arranged into one big directory
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000660 tree. The 'mount' utility is used to graft a filesystem onto a
661 particular part of the tree. A filesystem can either live on a block
Mike Frysinger55092282006-02-02 23:14:57 +0000662 device, or it can be accessible over the network, as is the case with
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000663 NFS filesystems. Most people using BusyBox will also want to enable
Mike Frysinger55092282006-02-02 23:14:57 +0000664 the 'mount' utility.
665
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000666config FEATURE_MOUNT_FAKE
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000667 bool "Support option -f"
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000668 default n
669 depends on MOUNT
670 help
671 Enable support for faking a file system mount.
672
Denis Vlasenkof732e962008-02-18 12:07:49 +0000673config FEATURE_MOUNT_VERBOSE
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000674 bool "Support option -v"
Denis Vlasenkof732e962008-02-18 12:07:49 +0000675 default n
676 depends on MOUNT
677 help
678 Enable multi-level -v[vv...] verbose messages. Useful if you
679 debug mount problems and want to see what is exactly passed
680 to the kernel.
681
Denis Vlasenko2535f122007-09-15 13:28:30 +0000682config FEATURE_MOUNT_HELPERS
683 bool "Support mount helpers"
684 default n
685 depends on MOUNT
686 help
687 Enable mounting of virtual file systems via external helpers.
Denis Vlasenko32d49bc2008-02-03 23:52:41 +0000688 E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
689 "obexfs -b00.11.22.33.44.55 /mnt"
690 Also "mount -t sometype [-o opts] fs /mnt" will try
691 "sometype [-o opts] fs /mnt" if simple mount syscall fails.
692 The idea is to use such virtual filesystems in /etc/fstab.
Denis Vlasenko2535f122007-09-15 13:28:30 +0000693
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000694config FEATURE_MOUNT_LABEL
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000695 bool "Support specifiying devices by label or UUID"
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000696 default n
697 depends on MOUNT
Denis Vlasenko4824cca2008-03-21 18:29:01 +0000698 select VOLUMEID
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000699 help
700 This allows for specifying a device by label or uuid, rather than by
Denis Vlasenko1e19afd2008-10-12 11:20:08 +0000701 name. This feature utilizes the same functionality as blkid/findfs.
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000702
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000703config FEATURE_MOUNT_NFS
Rob Landley2ec922e2006-04-13 23:22:16 +0000704 bool "Support mounting NFS file systems"
Mike Frysinger55092282006-02-02 23:14:57 +0000705 default n
Denis Vlasenkoa7825f22007-06-16 13:56:51 +0000706 depends on MOUNT
707 select FEATURE_HAVE_RPC
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000708 select FEATURE_SYSLOG
Mike Frysinger55092282006-02-02 23:14:57 +0000709 help
Rob Landleye3781b72006-08-08 01:39:49 +0000710 Enable mounting of NFS file systems.
711
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000712config FEATURE_MOUNT_CIFS
Rob Landley89d9d4d2006-09-01 08:10:44 +0000713 bool "Support mounting CIFS/SMB file systems"
714 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000715 depends on MOUNT
Rob Landley89d9d4d2006-09-01 08:10:44 +0000716 help
717 Enable support for samba mounts.
Denis Vlasenko39e93cc2006-09-10 18:38:17 +0000718
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000719config FEATURE_MOUNT_FLAGS
720 depends on MOUNT
Denis Vlasenko39e93cc2006-09-10 18:38:17 +0000721 bool "Support lots of -o flags in mount"
Rob Landleye3781b72006-08-08 01:39:49 +0000722 default y
723 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000724 Without this, mount only supports ro/rw/remount. With this, it
Rob Landleye3781b72006-08-08 01:39:49 +0000725 supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
726 noatime, diratime, nodiratime, loud, bind, move, shared, slave,
727 private, unbindable, rshared, rslave, rprivate, and runbindable.
728
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000729config FEATURE_MOUNT_FSTAB
730 depends on MOUNT
Rob Landleye3781b72006-08-08 01:39:49 +0000731 bool "Support /etc/fstab and -a"
732 default y
733 help
734 Support mount all and looking for files in /etc/fstab.
Mike Frysinger55092282006-02-02 23:14:57 +0000735
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000736config PIVOT_ROOT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000737 bool "pivot_root"
738 default n
739 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000740 The pivot_root utility swaps the mount points for the root filesystem
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000741 with some other mounted filesystem. This allows you to do all sorts
Eric Andersena0ac4522003-02-27 03:14:04 +0000742 of wild and crazy things with your Linux system and is far more
743 powerful than 'chroot'.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000744
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000745 Note: This is for initrd in linux 2.4. Under initramfs (introduced
Rob Landley0f34a822005-10-27 22:55:50 +0000746 in linux 2.6) use switch_root instead.
747
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000748config RDATE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000749 bool "rdate"
750 default n
751 help
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000752 The rdate utility allows you to synchronize the date and time of your
Eric Andersena0ac4522003-02-27 03:14:04 +0000753 system clock with the date and time of a remote networked system using
754 the RFC868 protocol, which is built into the inetd daemon on most
755 systems.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000756
Bernhard Reutner-Fischerc77e8432008-08-19 11:28:52 +0000757config RDEV
758 bool "rdev"
759 default n
760 help
761 Print the device node associated with the filesystem mounted at '/'.
762
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000763config READPROFILE
Mike Frysinger75aa1922005-09-24 23:12:38 +0000764 bool "readprofile"
765 default n
766 help
767 This allows you to parse /proc/profile for basic profiling.
768
Mike Frysinger6b160e42008-02-15 02:27:19 +0000769config RTCWAKE
770 bool "rtcwake"
771 default n
772 help
773 Enter a system sleep state until specified wakeup time.
774
Denis Vlasenko376003b2008-04-21 05:05:17 +0000775config SCRIPT
776 bool "script"
777 default n
778 help
779 The script makes typescript of terminal session.
780
Denys Vlasenko5e611152009-05-19 17:36:16 +0200781config SCRIPTREPLAY
782 bool "scriptreplay"
783 default n
784 help
785 This program replays a typescript, using timing information
786 given by script -t.
787
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000788config SETARCH
Mike Frysinger0a6b0bf2006-02-21 04:26:52 +0000789 bool "setarch"
790 default n
791 help
792 The linux32 utility is used to create a 32bit environment for the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000793 specified program (usually a shell). It only makes sense to have
Mike Frysinger0a6b0bf2006-02-21 04:26:52 +0000794 this util on a system that supports both 64bit and 32bit userland
795 (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
796
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000797config SWAPONOFF
Eric Andersenc9f20d92002-12-05 08:41:41 +0000798 bool "swaponoff"
799 default n
800 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000801 This option enables both the 'swapon' and the 'swapoff' utilities.
802 Once you have created some swap space using 'mkswap', you also need
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000803 to enable your swap space with the 'swapon' utility. The 'swapoff'
Eric Andersena0ac4522003-02-27 03:14:04 +0000804 utility is used, typically at system shutdown, to disable any swap
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000805 space. If you are not using any swap space, you can leave this
Eric Andersena0ac4522003-02-27 03:14:04 +0000806 option disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000807
Denis Vlasenkoee56e012008-05-18 23:05:34 +0000808config FEATURE_SWAPON_PRI
Bernhard Reutner-Fischer3576bed2008-05-19 08:25:23 +0000809 bool "Support priority option -p"
Denis Vlasenkoee56e012008-05-18 23:05:34 +0000810 default n
811 depends on SWAPONOFF
812 help
813 Enable support for setting swap device priority in swapon.
814
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000815config SWITCH_ROOT
Mike Frysinger55092282006-02-02 23:14:57 +0000816 bool "switch_root"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000817 default n
818 help
Mike Frysinger55092282006-02-02 23:14:57 +0000819 The switch_root utility is used from initramfs to select a new
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000820 root device. Under initramfs, you have to use this instead of
821 pivot_root. (Stop reading here if you don't care why.)
Eric Andersenc9f20d92002-12-05 08:41:41 +0000822
Mike Frysinger55092282006-02-02 23:14:57 +0000823 Booting with initramfs extracts a gzipped cpio archive into rootfs
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000824 (which is a variant of ramfs/tmpfs). Because rootfs can't be moved
825 or unmounted*, pivot_root will not work from initramfs. Instead,
Mike Frysinger55092282006-02-02 23:14:57 +0000826 switch_root deletes everything out of rootfs (including itself),
827 does a mount --move that overmounts rootfs with the new root, and
828 then execs the specified init program.
829
830 * Because the Linux kernel uses rootfs internally as the starting
831 and ending point for searching through the kernel's doubly linked
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000832 list of active mount points. That's why.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000833
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000834config UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000835 bool "umount"
836 default n
837 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000838 When you want to remove a mounted filesystem from its current mount
839 point, for example when you are shutting down the system, the
840 'umount' utility is the tool to use. If you enabled the 'mount'
841 utility, you almost certainly also want to enable 'umount'.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000842
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000843config FEATURE_UMOUNT_ALL
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000844 bool "Support option -a"
Rob Landleycc6d8d32006-02-08 20:06:57 +0000845 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000846 depends on UMOUNT
Rob Landleycc6d8d32006-02-08 20:06:57 +0000847 help
848 Support -a option to unmount all currently mounted filesystems.
849
Eric Andersenc9f20d92002-12-05 08:41:41 +0000850comment "Common options for mount/umount"
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000851 depends on MOUNT || UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000852
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000853config FEATURE_MOUNT_LOOP
Rob Landley2ec922e2006-04-13 23:22:16 +0000854 bool "Support loopback mounts"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000855 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000856 depends on MOUNT || UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000857 help
Rob Landley6a6798b2005-08-10 20:35:54 +0000858 Enabling this feature allows automatic mounting of files (containing
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000859 filesystem images) via the linux kernel's loopback devices.
860 The mount command will detect you are trying to mount a file instead
861 of a block device, and transparently associate the file with a
862 loopback device. The umount command will also free that loopback
863 device.
Tim Rikerc1ef7bd2006-01-25 00:08:53 +0000864
Rob Landley6a6798b2005-08-10 20:35:54 +0000865 You can still use the 'losetup' utility (to manually associate files
Mike Frysinger71a6a4e2007-01-24 08:24:43 +0000866 with loop devices) if you need to do something advanced, such as
Rob Landley6a6798b2005-08-10 20:35:54 +0000867 specify an offset or cryptographic options to the loopback device.
868 (If you don't want umount to free the loop device, use "umount -D".)
Paul Fox3f6f3172005-07-19 20:55:37 +0000869
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000870config FEATURE_MTAB_SUPPORT
Rob Landley2ec922e2006-04-13 23:22:16 +0000871 bool "Support for the old /etc/mtab file"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000872 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000873 depends on MOUNT || UMOUNT
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000874 select FEATURE_MOUNT_FAKE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000875 help
Rob Landley6a6798b2005-08-10 20:35:54 +0000876 Historically, Unix systems kept track of the currently mounted
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000877 partitions in the file "/etc/mtab". These days, the kernel exports
Rob Landley6a6798b2005-08-10 20:35:54 +0000878 the list of currently mounted partitions in "/proc/mounts", rendering
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000879 the old mtab file obsolete. (In modern systems, /etc/mtab should be
Rob Landley6a6798b2005-08-10 20:35:54 +0000880 a symlink to /proc/mounts.)
Eric Andersena0ac4522003-02-27 03:14:04 +0000881
Rob Landley6a6798b2005-08-10 20:35:54 +0000882 The only reason to have mount maintain an /etc/mtab file itself is if
883 your stripped-down embedded system does not have a /proc directory.
884 If you must use this, keep in mind it's inherently brittle (for
885 example a mount under chroot won't update it), can't handle modern
886 features like separate per-process filesystem namespaces, requires
887 that your /etc directory be writeable, tends to get easily confused
Rob Landley17507fa2006-05-08 02:22:24 +0000888 by --bind or --move mounts, won't update if you rename a directory
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000889 that contains a mount point, and so on. (In brief: avoid.)
Rob Landley17507fa2006-05-08 02:22:24 +0000890
891 About the only reason to use this is if you've removed /proc from
892 your kernel.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000893
Eric Andersenc9f20d92002-12-05 08:41:41 +0000894endmenu