blob: 36664de50b60e3dfe8efb2ce47af84da8c5f8533 [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
Vladimir Dronnikov823b4e62009-10-17 21:38:19 +0200242config MKFS_EXT2
243 bool "mkfs_ext2"
244 default n
245 help
246 Utility to create EXT2 filesystems.
247
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000248config GETOPT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000249 bool "getopt"
250 default n
251 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000252 The getopt utility is used to break up (parse) options in command
253 lines to make it easy to write complex shell scripts that also check
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000254 for legal (and illegal) options. If you want to write horribly
Eric Andersena0ac4522003-02-27 03:14:04 +0000255 complex shell scripts, or use some horribly complex shell script
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000256 written by others, this utility may be for you. Most people will
Eric Andersena0ac4522003-02-27 03:14:04 +0000257 wisely leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000258
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200259config FEATURE_GETOPT_LONG
260 bool "Support option -l"
261 default y if LONG_OPTS
Denys Vlasenkob22bbff2009-07-04 16:50:43 +0200262 depends on GETOPT
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200263 help
Denys Vlasenkob22bbff2009-07-04 16:50:43 +0200264 Enable support for long options (option -l).
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200265
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000266config HEXDUMP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000267 bool "hexdump"
268 default n
269 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000270 The hexdump utility is used to display binary data in a readable
271 way that is comparable to the output from most hex editors.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000272
Denis Vlasenkofbe5f392007-11-18 05:36:50 +0000273config FEATURE_HEXDUMP_REVERSE
274 bool "Support -R, reverse of 'hexdump -Cv'"
275 default n
276 depends on HEXDUMP
277 help
278 The hexdump utility is used to display binary data in an ascii
279 readable way. This option creates binary data from an ascii input.
280 NB: this option is non-standard. It's unwise to use it in scripts
281 aimed to be portable.
282
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000283config HD
284 bool "hd"
285 default n
286 select HEXDUMP
287 help
288 hd is an alias to hexdump -C.
289
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000290config HWCLOCK
Eric Andersenc9f20d92002-12-05 08:41:41 +0000291 bool "hwclock"
292 default n
293 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000294 The hwclock utility is used to read and set the hardware clock
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000295 on a system. This is primarily used to set the current time on
Eric Andersen88c916b2003-10-22 09:58:56 +0000296 shutdown in the hardware clock, so the hardware will keep the
297 correct time when Linux is _not_ running.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000298
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000299config FEATURE_HWCLOCK_LONG_OPTIONS
Rob Landley2ec922e2006-04-13 23:22:16 +0000300 bool "Support long options (--hctosys,...)"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000301 default n
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200302 depends on HWCLOCK && LONG_OPTS
Eric Andersenc9f20d92002-12-05 08:41:41 +0000303 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000304 By default, the hwclock utility only uses short options. If you
Eric Andersen88c916b2003-10-22 09:58:56 +0000305 are overly fond of its long options, such as --hctosys, --utc, etc)
Eric Andersena0ac4522003-02-27 03:14:04 +0000306 then enable this option.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000307
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000308config FEATURE_HWCLOCK_ADJTIME_FHS
Rob Landley2ec922e2006-04-13 23:22:16 +0000309 bool "Use FHS /var/lib/hwclock/adjtime"
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000310 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000311 depends on HWCLOCK
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000312 help
313 Starting with FHS 2.3, the adjtime state file is supposed to exist
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000314 at /var/lib/hwclock/adjtime instead of /etc/adjtime. If you wish
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000315 to use the FHS behavior, answer Y here, otherwise answer N for the
316 classic /etc/adjtime path.
317
Bernhard Reutner-Fischere99a92d2008-07-22 18:32:06 +0000318 pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000319
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000320config IPCRM
Rob Landley6eb1e412005-06-20 04:30:36 +0000321 bool "ipcrm"
322 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000323 select FEATURE_SUID
Rob Landley6eb1e412005-06-20 04:30:36 +0000324 help
325 The ipcrm utility allows the removal of System V interprocess
326 communication (IPC) objects and the associated data structures
327 from the system.
328
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000329config IPCS
Rob Landley6eb1e412005-06-20 04:30:36 +0000330 bool "ipcs"
331 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000332 select FEATURE_SUID
Rob Landley6eb1e412005-06-20 04:30:36 +0000333 help
334 The ipcs utility is used to provide information on the currently
335 allocated System V interprocess (IPC) objects in the system.
336
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000337config LOSETUP
Mike Frysinger75aa1922005-09-24 23:12:38 +0000338 bool "losetup"
339 default n
340 help
341 losetup is used to associate or detach a loop device with a regular
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000342 file or block device, and to query the status of a loop device. This
Mike Frysinger75aa1922005-09-24 23:12:38 +0000343 version does not currently support enabling data encryption.
344
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000345config MDEV
Rob Landley70f7ef72005-12-13 08:21:33 +0000346 bool "mdev"
347 default n
348 help
Mike Frysingerae302102007-02-14 13:20:29 +0000349 mdev is a mini-udev implementation for dynamically creating device
350 nodes in the /dev directory.
351
352 For more information, please see docs/mdev.txt
Rob Landley70f7ef72005-12-13 08:21:33 +0000353
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000354config FEATURE_MDEV_CONF
Rob Landley2ec922e2006-04-13 23:22:16 +0000355 bool "Support /etc/mdev.conf"
Rob Landley70f7ef72005-12-13 08:21:33 +0000356 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000357 depends on MDEV
Rob Landley70f7ef72005-12-13 08:21:33 +0000358 help
Mike Frysingerae302102007-02-14 13:20:29 +0000359 Add support for the mdev config file to control ownership and
360 permissions of the device nodes.
Rob Landley70f7ef72005-12-13 08:21:33 +0000361
Mike Frysingerae302102007-02-14 13:20:29 +0000362 For more information, please see docs/mdev.txt
Rob Landley70f7ef72005-12-13 08:21:33 +0000363
Mike Frysingerf0044c42008-02-01 06:53:50 +0000364config FEATURE_MDEV_RENAME
365 bool "Support subdirs/symlinks"
366 default n
367 depends on FEATURE_MDEV_CONF
368 help
369 Add support for renaming devices and creating symlinks.
370
371 For more information, please see docs/mdev.txt
372
Denis Vlasenkof2f38682008-03-29 17:26:10 +0000373config FEATURE_MDEV_RENAME_REGEXP
374 bool "Support regular expressions substitutions when renaming device"
375 default n
376 depends on FEATURE_MDEV_RENAME
377 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000378 Add support for regular expressions substitutions when renaming
379 device.
Denis Vlasenkof2f38682008-03-29 17:26:10 +0000380
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000381config FEATURE_MDEV_EXEC
Rob Landleyef10d522006-06-26 14:11:33 +0000382 bool "Support command execution at device addition/removal"
383 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000384 depends on FEATURE_MDEV_CONF
Rob Landleyef10d522006-06-26 14:11:33 +0000385 help
Mike Frysingerae302102007-02-14 13:20:29 +0000386 This adds support for an optional field to /etc/mdev.conf for
387 executing commands when devices are created/removed.
Rob Landleyef10d522006-06-26 14:11:33 +0000388
Mike Frysingerae302102007-02-14 13:20:29 +0000389 For more information, please see docs/mdev.txt
Rob Landleyef10d522006-06-26 14:11:33 +0000390
Mike Frysingera78ef2c2007-06-13 07:34:15 +0000391config FEATURE_MDEV_LOAD_FIRMWARE
392 bool "Support loading of firmwares"
393 default n
394 depends on MDEV
395 help
396 Some devices need to load firmware before they can be usable.
397
398 These devices will request userspace look up the files in
399 /lib/firmware/ and if it exists, send it to the kernel for
400 loading into the hardware.
401
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000402config MKSWAP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000403 bool "mkswap"
404 default n
405 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000406 The mkswap utility is used to configure a file or disk partition as
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000407 Linux swap space. This allows Linux to use the entire file or
Eric Andersena0ac4522003-02-27 03:14:04 +0000408 partition as if it were additional RAM, which can greatly increase
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000409 the capability of low-memory machines. This additional memory is
Eric Andersena0ac4522003-02-27 03:14:04 +0000410 much slower than real RAM, but can be very helpful at preventing your
Eric Andersen88c916b2003-10-22 09:58:56 +0000411 applications being killed by the Linux out of memory (OOM) killer.
412 Once you have created swap space using 'mkswap' you need to enable
413 the swap space using the 'swapon' utility.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000414
Denys Vlasenkobeca96f2009-06-19 13:14:48 +0200415config FEATURE_MKSWAP_UUID
416 bool "UUID support"
417 default n
418 depends on MKSWAP
419 help
420 Generate swap spaces with universally unique identifiers.
421
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000422config MORE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000423 bool "more"
424 default n
425 help
Eric Andersen88c916b2003-10-22 09:58:56 +0000426 more is a simple utility which allows you to read text one screen
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000427 sized page at a time. If you want to read text that is larger than
Eric Andersena0ac4522003-02-27 03:14:04 +0000428 the screen, and you are using anything faster than a 300 baud modem,
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000429 you will probably find this utility very helpful. If you don't have
Eric Andersena0ac4522003-02-27 03:14:04 +0000430 any need to reading text files, you can leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000431
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000432config FEATURE_USE_TERMIOS
Rob Landley2ec922e2006-04-13 23:22:16 +0000433 bool "Use termios to manipulate the screen"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000434 default y
Paul Fox9e1f92d2008-03-20 16:04:36 +0000435 depends on MORE || TOP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000436 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000437 This option allows utilities such as 'more' and 'top' to determine
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000438 the size of the screen. If you leave this disabled, your utilities
Eric Andersen88c916b2003-10-22 09:58:56 +0000439 that display things on the screen will be especially primitive and
Eric Andersena0ac4522003-02-27 03:14:04 +0000440 will be unable to determine the current screen size, and will be
441 unable to move the cursor.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000442
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000443config VOLUMEID
Denis Vlasenko35a064b2008-11-06 00:49:59 +0000444 bool #No description makes it a hidden option
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000445 default n
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000446
447config FEATURE_VOLUMEID_EXT
448 bool "Ext filesystem"
449 default n
450 depends on VOLUMEID
451 help
452 TODO
453
Vladimir Dronnikov662e8b72009-11-01 23:05:09 +0100454config FEATURE_VOLUMEID_BTRFS
455 bool "btrfs filesystem"
456 default n
457 depends on VOLUMEID
458 help
459 TODO
460
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000461config FEATURE_VOLUMEID_REISERFS
462 bool "Reiser filesystem"
463 default n
464 depends on VOLUMEID
465 help
466 TODO
467
468config FEATURE_VOLUMEID_FAT
469 bool "fat filesystem"
470 default n
471 depends on VOLUMEID
472 help
473 TODO
474
475config FEATURE_VOLUMEID_HFS
476 bool "hfs filesystem"
477 default n
478 depends on VOLUMEID
479 help
480 TODO
481
482config FEATURE_VOLUMEID_JFS
483 bool "jfs filesystem"
484 default n
485 depends on VOLUMEID
486 help
487 TODO
488
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000489### config FEATURE_VOLUMEID_UFS
490### bool "ufs filesystem"
491### default n
492### depends on VOLUMEID
493### help
494### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000495
496config FEATURE_VOLUMEID_XFS
497 bool "xfs filesystem"
498 default n
499 depends on VOLUMEID
500 help
501 TODO
502
503config FEATURE_VOLUMEID_NTFS
504 bool "ntfs filesystem"
505 default n
506 depends on VOLUMEID
507 help
508 TODO
509
510config FEATURE_VOLUMEID_ISO9660
511 bool "iso9660 filesystem"
512 default n
513 depends on VOLUMEID
514 help
515 TODO
516
517config FEATURE_VOLUMEID_UDF
518 bool "udf filesystem"
519 default n
520 depends on VOLUMEID
521 help
522 TODO
523
524config FEATURE_VOLUMEID_LUKS
525 bool "luks filesystem"
526 default n
527 depends on VOLUMEID
528 help
529 TODO
530
531config FEATURE_VOLUMEID_LINUXSWAP
532 bool "linux swap filesystem"
533 default n
534 depends on VOLUMEID
535 help
536 TODO
537
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000538### config FEATURE_VOLUMEID_LVM
539### bool "lvm"
540### default n
541### depends on VOLUMEID
542### help
543### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000544
545config FEATURE_VOLUMEID_CRAMFS
546 bool "cramfs filesystem"
547 default n
548 depends on VOLUMEID
549 help
550 TODO
551
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000552### config FEATURE_VOLUMEID_HPFS
553### bool "hpfs filesystem"
554### default n
555### depends on VOLUMEID
556### help
557### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000558
559config FEATURE_VOLUMEID_ROMFS
560 bool "romfs filesystem"
561 default n
562 depends on VOLUMEID
563 help
564 TODO
565
566config FEATURE_VOLUMEID_SYSV
567 bool "sysv filesystem"
568 default n
569 depends on VOLUMEID
570 help
571 TODO
572
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000573### config FEATURE_VOLUMEID_MINIX
574### bool "minix filesystem"
575### default n
576### depends on VOLUMEID
577### help
578### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000579
Denis Vlasenkoc5b73722008-03-17 09:21:26 +0000580### These only detect partition tables - not used (yet?)
581### config FEATURE_VOLUMEID_MAC
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000582### bool "mac filesystem"
583### default n
584### depends on VOLUMEID
585### help
586### TODO
Denis Vlasenko1f228982008-04-22 00:16:29 +0000587###
Denis Vlasenkoc5b73722008-03-17 09:21:26 +0000588### config FEATURE_VOLUMEID_MSDOS
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000589### bool "msdos filesystem"
590### default n
591### depends on VOLUMEID
592### help
593### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000594
595config FEATURE_VOLUMEID_OCFS2
596 bool "ocfs2 filesystem"
597 default n
598 depends on VOLUMEID
599 help
600 TODO
601
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000602### config FEATURE_VOLUMEID_HIGHPOINTRAID
603### bool "highpoint raid"
604### default n
605### depends on VOLUMEID
606### help
607### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000608
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000609### config FEATURE_VOLUMEID_ISWRAID
610### bool "intel raid"
611### default n
612### depends on VOLUMEID
613### help
614### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000615
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000616### config FEATURE_VOLUMEID_LSIRAID
617### bool "lsi raid"
618### default n
619### depends on VOLUMEID
620### help
621### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000622
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000623### config FEATURE_VOLUMEID_VIARAID
624### bool "via raid"
625### default n
626### depends on VOLUMEID
627### help
628### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000629
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000630### config FEATURE_VOLUMEID_SILICONRAID
631### bool "silicon raid"
632### default n
633### depends on VOLUMEID
634### help
635### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000636
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000637### config FEATURE_VOLUMEID_NVIDIARAID
638### bool "nvidia raid"
639### default n
640### depends on VOLUMEID
641### help
642### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000643
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000644### config FEATURE_VOLUMEID_PROMISERAID
645### bool "promise raid"
646### default n
647### depends on VOLUMEID
648### help
649### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000650
651config FEATURE_VOLUMEID_LINUXRAID
652 bool "linuxraid"
653 default n
654 depends on VOLUMEID
655 help
656 TODO
657
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000658config MOUNT
Mike Frysinger55092282006-02-02 23:14:57 +0000659 bool "mount"
660 default n
661 help
662 All files and filesystems in Unix are arranged into one big directory
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000663 tree. The 'mount' utility is used to graft a filesystem onto a
664 particular part of the tree. A filesystem can either live on a block
Mike Frysinger55092282006-02-02 23:14:57 +0000665 device, or it can be accessible over the network, as is the case with
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000666 NFS filesystems. Most people using BusyBox will also want to enable
Mike Frysinger55092282006-02-02 23:14:57 +0000667 the 'mount' utility.
668
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000669config FEATURE_MOUNT_FAKE
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000670 bool "Support option -f"
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000671 default n
672 depends on MOUNT
673 help
674 Enable support for faking a file system mount.
675
Denis Vlasenkof732e962008-02-18 12:07:49 +0000676config FEATURE_MOUNT_VERBOSE
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000677 bool "Support option -v"
Denis Vlasenkof732e962008-02-18 12:07:49 +0000678 default n
679 depends on MOUNT
680 help
681 Enable multi-level -v[vv...] verbose messages. Useful if you
682 debug mount problems and want to see what is exactly passed
683 to the kernel.
684
Denis Vlasenko2535f122007-09-15 13:28:30 +0000685config FEATURE_MOUNT_HELPERS
686 bool "Support mount helpers"
687 default n
688 depends on MOUNT
689 help
690 Enable mounting of virtual file systems via external helpers.
Denis Vlasenko32d49bc2008-02-03 23:52:41 +0000691 E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
692 "obexfs -b00.11.22.33.44.55 /mnt"
693 Also "mount -t sometype [-o opts] fs /mnt" will try
694 "sometype [-o opts] fs /mnt" if simple mount syscall fails.
695 The idea is to use such virtual filesystems in /etc/fstab.
Denis Vlasenko2535f122007-09-15 13:28:30 +0000696
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000697config FEATURE_MOUNT_LABEL
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000698 bool "Support specifiying devices by label or UUID"
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000699 default n
700 depends on MOUNT
Denis Vlasenko4824cca2008-03-21 18:29:01 +0000701 select VOLUMEID
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000702 help
703 This allows for specifying a device by label or uuid, rather than by
Denis Vlasenko1e19afd2008-10-12 11:20:08 +0000704 name. This feature utilizes the same functionality as blkid/findfs.
Natanael Copa9aff2992009-09-20 04:28:22 +0200705 This also enables label or uuid support for swapon.
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000706
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000707config FEATURE_MOUNT_NFS
Rob Landley2ec922e2006-04-13 23:22:16 +0000708 bool "Support mounting NFS file systems"
Mike Frysinger55092282006-02-02 23:14:57 +0000709 default n
Denis Vlasenkoa7825f22007-06-16 13:56:51 +0000710 depends on MOUNT
711 select FEATURE_HAVE_RPC
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000712 select FEATURE_SYSLOG
Mike Frysinger55092282006-02-02 23:14:57 +0000713 help
Rob Landleye3781b72006-08-08 01:39:49 +0000714 Enable mounting of NFS file systems.
715
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000716config FEATURE_MOUNT_CIFS
Rob Landley89d9d4d2006-09-01 08:10:44 +0000717 bool "Support mounting CIFS/SMB file systems"
718 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000719 depends on MOUNT
Rob Landley89d9d4d2006-09-01 08:10:44 +0000720 help
721 Enable support for samba mounts.
Denis Vlasenko39e93cc2006-09-10 18:38:17 +0000722
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000723config FEATURE_MOUNT_FLAGS
724 depends on MOUNT
Denis Vlasenko39e93cc2006-09-10 18:38:17 +0000725 bool "Support lots of -o flags in mount"
Rob Landleye3781b72006-08-08 01:39:49 +0000726 default y
727 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000728 Without this, mount only supports ro/rw/remount. With this, it
Rob Landleye3781b72006-08-08 01:39:49 +0000729 supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
730 noatime, diratime, nodiratime, loud, bind, move, shared, slave,
731 private, unbindable, rshared, rslave, rprivate, and runbindable.
732
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000733config FEATURE_MOUNT_FSTAB
734 depends on MOUNT
Rob Landleye3781b72006-08-08 01:39:49 +0000735 bool "Support /etc/fstab and -a"
736 default y
737 help
738 Support mount all and looking for files in /etc/fstab.
Mike Frysinger55092282006-02-02 23:14:57 +0000739
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000740config PIVOT_ROOT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000741 bool "pivot_root"
742 default n
743 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000744 The pivot_root utility swaps the mount points for the root filesystem
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000745 with some other mounted filesystem. This allows you to do all sorts
Eric Andersena0ac4522003-02-27 03:14:04 +0000746 of wild and crazy things with your Linux system and is far more
747 powerful than 'chroot'.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000748
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000749 Note: This is for initrd in linux 2.4. Under initramfs (introduced
Rob Landley0f34a822005-10-27 22:55:50 +0000750 in linux 2.6) use switch_root instead.
751
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000752config RDATE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000753 bool "rdate"
754 default n
755 help
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000756 The rdate utility allows you to synchronize the date and time of your
Eric Andersena0ac4522003-02-27 03:14:04 +0000757 system clock with the date and time of a remote networked system using
758 the RFC868 protocol, which is built into the inetd daemon on most
759 systems.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000760
Bernhard Reutner-Fischerc77e8432008-08-19 11:28:52 +0000761config RDEV
762 bool "rdev"
763 default n
764 help
765 Print the device node associated with the filesystem mounted at '/'.
766
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000767config READPROFILE
Mike Frysinger75aa1922005-09-24 23:12:38 +0000768 bool "readprofile"
769 default n
770 help
771 This allows you to parse /proc/profile for basic profiling.
772
Mike Frysinger6b160e42008-02-15 02:27:19 +0000773config RTCWAKE
774 bool "rtcwake"
775 default n
776 help
777 Enter a system sleep state until specified wakeup time.
778
Denis Vlasenko376003b2008-04-21 05:05:17 +0000779config SCRIPT
780 bool "script"
781 default n
782 help
783 The script makes typescript of terminal session.
784
Denys Vlasenko5e611152009-05-19 17:36:16 +0200785config SCRIPTREPLAY
786 bool "scriptreplay"
787 default n
788 help
789 This program replays a typescript, using timing information
790 given by script -t.
791
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000792config SETARCH
Mike Frysinger0a6b0bf2006-02-21 04:26:52 +0000793 bool "setarch"
794 default n
795 help
796 The linux32 utility is used to create a 32bit environment for the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000797 specified program (usually a shell). It only makes sense to have
Mike Frysinger0a6b0bf2006-02-21 04:26:52 +0000798 this util on a system that supports both 64bit and 32bit userland
799 (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
800
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000801config SWAPONOFF
Eric Andersenc9f20d92002-12-05 08:41:41 +0000802 bool "swaponoff"
803 default n
804 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000805 This option enables both the 'swapon' and the 'swapoff' utilities.
806 Once you have created some swap space using 'mkswap', you also need
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000807 to enable your swap space with the 'swapon' utility. The 'swapoff'
Eric Andersena0ac4522003-02-27 03:14:04 +0000808 utility is used, typically at system shutdown, to disable any swap
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000809 space. If you are not using any swap space, you can leave this
Eric Andersena0ac4522003-02-27 03:14:04 +0000810 option disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000811
Denis Vlasenkoee56e012008-05-18 23:05:34 +0000812config FEATURE_SWAPON_PRI
Bernhard Reutner-Fischer3576bed2008-05-19 08:25:23 +0000813 bool "Support priority option -p"
Denis Vlasenkoee56e012008-05-18 23:05:34 +0000814 default n
815 depends on SWAPONOFF
816 help
817 Enable support for setting swap device priority in swapon.
818
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000819config SWITCH_ROOT
Mike Frysinger55092282006-02-02 23:14:57 +0000820 bool "switch_root"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000821 default n
822 help
Mike Frysinger55092282006-02-02 23:14:57 +0000823 The switch_root utility is used from initramfs to select a new
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000824 root device. Under initramfs, you have to use this instead of
825 pivot_root. (Stop reading here if you don't care why.)
Eric Andersenc9f20d92002-12-05 08:41:41 +0000826
Mike Frysinger55092282006-02-02 23:14:57 +0000827 Booting with initramfs extracts a gzipped cpio archive into rootfs
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000828 (which is a variant of ramfs/tmpfs). Because rootfs can't be moved
829 or unmounted*, pivot_root will not work from initramfs. Instead,
Mike Frysinger55092282006-02-02 23:14:57 +0000830 switch_root deletes everything out of rootfs (including itself),
831 does a mount --move that overmounts rootfs with the new root, and
832 then execs the specified init program.
833
834 * Because the Linux kernel uses rootfs internally as the starting
835 and ending point for searching through the kernel's doubly linked
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000836 list of active mount points. That's why.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000837
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000838config UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000839 bool "umount"
840 default n
841 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000842 When you want to remove a mounted filesystem from its current mount
843 point, for example when you are shutting down the system, the
844 'umount' utility is the tool to use. If you enabled the 'mount'
845 utility, you almost certainly also want to enable 'umount'.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000846
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000847config FEATURE_UMOUNT_ALL
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000848 bool "Support option -a"
Rob Landleycc6d8d32006-02-08 20:06:57 +0000849 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000850 depends on UMOUNT
Rob Landleycc6d8d32006-02-08 20:06:57 +0000851 help
852 Support -a option to unmount all currently mounted filesystems.
853
Eric Andersenc9f20d92002-12-05 08:41:41 +0000854comment "Common options for mount/umount"
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000855 depends on MOUNT || UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000856
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000857config FEATURE_MOUNT_LOOP
Rob Landley2ec922e2006-04-13 23:22:16 +0000858 bool "Support loopback mounts"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000859 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000860 depends on MOUNT || UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000861 help
Rob Landley6a6798b2005-08-10 20:35:54 +0000862 Enabling this feature allows automatic mounting of files (containing
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000863 filesystem images) via the linux kernel's loopback devices.
864 The mount command will detect you are trying to mount a file instead
865 of a block device, and transparently associate the file with a
866 loopback device. The umount command will also free that loopback
867 device.
Tim Rikerc1ef7bd2006-01-25 00:08:53 +0000868
Rob Landley6a6798b2005-08-10 20:35:54 +0000869 You can still use the 'losetup' utility (to manually associate files
Mike Frysinger71a6a4e2007-01-24 08:24:43 +0000870 with loop devices) if you need to do something advanced, such as
Rob Landley6a6798b2005-08-10 20:35:54 +0000871 specify an offset or cryptographic options to the loopback device.
872 (If you don't want umount to free the loop device, use "umount -D".)
Paul Fox3f6f3172005-07-19 20:55:37 +0000873
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000874config FEATURE_MTAB_SUPPORT
Rob Landley2ec922e2006-04-13 23:22:16 +0000875 bool "Support for the old /etc/mtab file"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000876 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000877 depends on MOUNT || UMOUNT
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000878 select FEATURE_MOUNT_FAKE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000879 help
Rob Landley6a6798b2005-08-10 20:35:54 +0000880 Historically, Unix systems kept track of the currently mounted
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000881 partitions in the file "/etc/mtab". These days, the kernel exports
Rob Landley6a6798b2005-08-10 20:35:54 +0000882 the list of currently mounted partitions in "/proc/mounts", rendering
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000883 the old mtab file obsolete. (In modern systems, /etc/mtab should be
Rob Landley6a6798b2005-08-10 20:35:54 +0000884 a symlink to /proc/mounts.)
Eric Andersena0ac4522003-02-27 03:14:04 +0000885
Rob Landley6a6798b2005-08-10 20:35:54 +0000886 The only reason to have mount maintain an /etc/mtab file itself is if
887 your stripped-down embedded system does not have a /proc directory.
888 If you must use this, keep in mind it's inherently brittle (for
889 example a mount under chroot won't update it), can't handle modern
890 features like separate per-process filesystem namespaces, requires
891 that your /etc directory be writeable, tends to get easily confused
Rob Landley17507fa2006-05-08 02:22:24 +0000892 by --bind or --move mounts, won't update if you rename a directory
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000893 that contains a mount point, and so on. (In brief: avoid.)
Rob Landley17507fa2006-05-08 02:22:24 +0000894
895 About the only reason to use this is if you've removed /proc from
896 your kernel.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000897
Eric Andersenc9f20d92002-12-05 08:41:41 +0000898endmenu