blob: 9827145179055a429e29d3f4b42ff8766aea1667 [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
Vladimir Dronnikov0d8ea642009-11-02 10:41:46 +0100216config MKFS_EXT2
217 bool "mkfs_ext2"
218 default n
219 help
220 Utility to create EXT2 filesystems.
221
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000222config MKFS_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000223 bool "mkfs_minix"
224 default n
225 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000226 The minix filesystem is a nice, small, compact, read-write filesystem
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000227 with little overhead. If you wish to be able to create minix
228 filesystems this utility will do the job for you.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000229
230comment "Minix filesystem support"
Mike Frysinger71a6a4e2007-01-24 08:24:43 +0000231 depends on FSCK_MINIX || MKFS_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000232
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000233config FEATURE_MINIX2
Rob Landley2ec922e2006-04-13 23:22:16 +0000234 bool "Support Minix fs v2 (fsck_minix/mkfs_minix)"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000235 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000236 depends on FSCK_MINIX || MKFS_MINIX
Eric Andersenc9f20d92002-12-05 08:41:41 +0000237 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000238 If you wish to be able to create version 2 minix filesystems, enable
239 this. If you enabled 'mkfs_minix' then you almost certainly want to
240 be using the version 2 filesystem support.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000241
Vladimir Dronnikov0d8ea642009-11-02 10:41:46 +0100242config MKFS_REISER
243 bool "mkfs_reiser"
244 default n
245 help
246 Utility to create ReiserFS filesystems.
247
Denis Vlasenko9d04b6b2009-03-28 02:13:01 +0000248config MKFS_VFAT
249 bool "mkfs_vfat"
250 default n
251 help
252 Utility to create FAT32 filesystems.
253
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000254config GETOPT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000255 bool "getopt"
256 default n
257 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000258 The getopt utility is used to break up (parse) options in command
259 lines to make it easy to write complex shell scripts that also check
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000260 for legal (and illegal) options. If you want to write horribly
Eric Andersena0ac4522003-02-27 03:14:04 +0000261 complex shell scripts, or use some horribly complex shell script
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000262 written by others, this utility may be for you. Most people will
Eric Andersena0ac4522003-02-27 03:14:04 +0000263 wisely leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000264
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200265config FEATURE_GETOPT_LONG
266 bool "Support option -l"
267 default y if LONG_OPTS
Denys Vlasenkob22bbff2009-07-04 16:50:43 +0200268 depends on GETOPT
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200269 help
Denys Vlasenkob22bbff2009-07-04 16:50:43 +0200270 Enable support for long options (option -l).
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200271
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000272config HEXDUMP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000273 bool "hexdump"
274 default n
275 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000276 The hexdump utility is used to display binary data in a readable
277 way that is comparable to the output from most hex editors.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000278
Denis Vlasenkofbe5f392007-11-18 05:36:50 +0000279config FEATURE_HEXDUMP_REVERSE
280 bool "Support -R, reverse of 'hexdump -Cv'"
281 default n
282 depends on HEXDUMP
283 help
284 The hexdump utility is used to display binary data in an ascii
285 readable way. This option creates binary data from an ascii input.
286 NB: this option is non-standard. It's unwise to use it in scripts
287 aimed to be portable.
288
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000289config HD
290 bool "hd"
291 default n
292 select HEXDUMP
293 help
294 hd is an alias to hexdump -C.
295
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000296config HWCLOCK
Eric Andersenc9f20d92002-12-05 08:41:41 +0000297 bool "hwclock"
298 default n
299 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000300 The hwclock utility is used to read and set the hardware clock
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000301 on a system. This is primarily used to set the current time on
Eric Andersen88c916b2003-10-22 09:58:56 +0000302 shutdown in the hardware clock, so the hardware will keep the
303 correct time when Linux is _not_ running.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000304
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000305config FEATURE_HWCLOCK_LONG_OPTIONS
Rob Landley2ec922e2006-04-13 23:22:16 +0000306 bool "Support long options (--hctosys,...)"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000307 default n
Denys Vlasenkof3b92d32009-06-19 12:10:38 +0200308 depends on HWCLOCK && LONG_OPTS
Eric Andersenc9f20d92002-12-05 08:41:41 +0000309 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000310 By default, the hwclock utility only uses short options. If you
Eric Andersen88c916b2003-10-22 09:58:56 +0000311 are overly fond of its long options, such as --hctosys, --utc, etc)
Eric Andersena0ac4522003-02-27 03:14:04 +0000312 then enable this option.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000313
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000314config FEATURE_HWCLOCK_ADJTIME_FHS
Rob Landley2ec922e2006-04-13 23:22:16 +0000315 bool "Use FHS /var/lib/hwclock/adjtime"
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000316 default y
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000317 depends on HWCLOCK
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000318 help
319 Starting with FHS 2.3, the adjtime state file is supposed to exist
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000320 at /var/lib/hwclock/adjtime instead of /etc/adjtime. If you wish
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000321 to use the FHS behavior, answer Y here, otherwise answer N for the
322 classic /etc/adjtime path.
323
Bernhard Reutner-Fischere99a92d2008-07-22 18:32:06 +0000324 pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
Mike Frysinger747fc5d2005-09-28 03:21:21 +0000325
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000326config IPCRM
Rob Landley6eb1e412005-06-20 04:30:36 +0000327 bool "ipcrm"
328 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000329 select FEATURE_SUID
Rob Landley6eb1e412005-06-20 04:30:36 +0000330 help
331 The ipcrm utility allows the removal of System V interprocess
332 communication (IPC) objects and the associated data structures
333 from the system.
334
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000335config IPCS
Rob Landley6eb1e412005-06-20 04:30:36 +0000336 bool "ipcs"
337 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000338 select FEATURE_SUID
Rob Landley6eb1e412005-06-20 04:30:36 +0000339 help
340 The ipcs utility is used to provide information on the currently
341 allocated System V interprocess (IPC) objects in the system.
342
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000343config LOSETUP
Mike Frysinger75aa1922005-09-24 23:12:38 +0000344 bool "losetup"
345 default n
346 help
347 losetup is used to associate or detach a loop device with a regular
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000348 file or block device, and to query the status of a loop device. This
Mike Frysinger75aa1922005-09-24 23:12:38 +0000349 version does not currently support enabling data encryption.
350
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000351config MDEV
Rob Landley70f7ef72005-12-13 08:21:33 +0000352 bool "mdev"
353 default n
354 help
Mike Frysingerae302102007-02-14 13:20:29 +0000355 mdev is a mini-udev implementation for dynamically creating device
356 nodes in the /dev directory.
357
358 For more information, please see docs/mdev.txt
Rob Landley70f7ef72005-12-13 08:21:33 +0000359
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000360config FEATURE_MDEV_CONF
Rob Landley2ec922e2006-04-13 23:22:16 +0000361 bool "Support /etc/mdev.conf"
Rob Landley70f7ef72005-12-13 08:21:33 +0000362 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000363 depends on MDEV
Rob Landley70f7ef72005-12-13 08:21:33 +0000364 help
Mike Frysingerae302102007-02-14 13:20:29 +0000365 Add support for the mdev config file to control ownership and
366 permissions of the device nodes.
Rob Landley70f7ef72005-12-13 08:21:33 +0000367
Mike Frysingerae302102007-02-14 13:20:29 +0000368 For more information, please see docs/mdev.txt
Rob Landley70f7ef72005-12-13 08:21:33 +0000369
Mike Frysingerf0044c42008-02-01 06:53:50 +0000370config FEATURE_MDEV_RENAME
371 bool "Support subdirs/symlinks"
372 default n
373 depends on FEATURE_MDEV_CONF
374 help
375 Add support for renaming devices and creating symlinks.
376
377 For more information, please see docs/mdev.txt
378
Denis Vlasenkof2f38682008-03-29 17:26:10 +0000379config FEATURE_MDEV_RENAME_REGEXP
380 bool "Support regular expressions substitutions when renaming device"
381 default n
382 depends on FEATURE_MDEV_RENAME
383 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000384 Add support for regular expressions substitutions when renaming
385 device.
Denis Vlasenkof2f38682008-03-29 17:26:10 +0000386
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000387config FEATURE_MDEV_EXEC
Rob Landleyef10d522006-06-26 14:11:33 +0000388 bool "Support command execution at device addition/removal"
389 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000390 depends on FEATURE_MDEV_CONF
Rob Landleyef10d522006-06-26 14:11:33 +0000391 help
Mike Frysingerae302102007-02-14 13:20:29 +0000392 This adds support for an optional field to /etc/mdev.conf for
393 executing commands when devices are created/removed.
Rob Landleyef10d522006-06-26 14:11:33 +0000394
Mike Frysingerae302102007-02-14 13:20:29 +0000395 For more information, please see docs/mdev.txt
Rob Landleyef10d522006-06-26 14:11:33 +0000396
Mike Frysingera78ef2c2007-06-13 07:34:15 +0000397config FEATURE_MDEV_LOAD_FIRMWARE
398 bool "Support loading of firmwares"
399 default n
400 depends on MDEV
401 help
402 Some devices need to load firmware before they can be usable.
403
404 These devices will request userspace look up the files in
405 /lib/firmware/ and if it exists, send it to the kernel for
406 loading into the hardware.
407
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000408config MKSWAP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000409 bool "mkswap"
410 default n
411 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000412 The mkswap utility is used to configure a file or disk partition as
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000413 Linux swap space. This allows Linux to use the entire file or
Eric Andersena0ac4522003-02-27 03:14:04 +0000414 partition as if it were additional RAM, which can greatly increase
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000415 the capability of low-memory machines. This additional memory is
Eric Andersena0ac4522003-02-27 03:14:04 +0000416 much slower than real RAM, but can be very helpful at preventing your
Eric Andersen88c916b2003-10-22 09:58:56 +0000417 applications being killed by the Linux out of memory (OOM) killer.
418 Once you have created swap space using 'mkswap' you need to enable
419 the swap space using the 'swapon' utility.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000420
Denys Vlasenkobeca96f2009-06-19 13:14:48 +0200421config FEATURE_MKSWAP_UUID
422 bool "UUID support"
423 default n
424 depends on MKSWAP
425 help
426 Generate swap spaces with universally unique identifiers.
427
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000428config MORE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000429 bool "more"
430 default n
431 help
Eric Andersen88c916b2003-10-22 09:58:56 +0000432 more is a simple utility which allows you to read text one screen
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000433 sized page at a time. If you want to read text that is larger than
Eric Andersena0ac4522003-02-27 03:14:04 +0000434 the screen, and you are using anything faster than a 300 baud modem,
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000435 you will probably find this utility very helpful. If you don't have
Eric Andersena0ac4522003-02-27 03:14:04 +0000436 any need to reading text files, you can leave this disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000437
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000438config FEATURE_USE_TERMIOS
Rob Landley2ec922e2006-04-13 23:22:16 +0000439 bool "Use termios to manipulate the screen"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000440 default y
Paul Fox9e1f92d2008-03-20 16:04:36 +0000441 depends on MORE || TOP
Eric Andersenc9f20d92002-12-05 08:41:41 +0000442 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000443 This option allows utilities such as 'more' and 'top' to determine
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000444 the size of the screen. If you leave this disabled, your utilities
Eric Andersen88c916b2003-10-22 09:58:56 +0000445 that display things on the screen will be especially primitive and
Eric Andersena0ac4522003-02-27 03:14:04 +0000446 will be unable to determine the current screen size, and will be
447 unable to move the cursor.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000448
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000449config VOLUMEID
Denis Vlasenko35a064b2008-11-06 00:49:59 +0000450 bool #No description makes it a hidden option
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000451 default n
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000452
453config FEATURE_VOLUMEID_EXT
454 bool "Ext filesystem"
455 default n
456 depends on VOLUMEID
457 help
458 TODO
459
Vladimir Dronnikov662e8b72009-11-01 23:05:09 +0100460config FEATURE_VOLUMEID_BTRFS
461 bool "btrfs filesystem"
462 default n
463 depends on VOLUMEID
464 help
465 TODO
466
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000467config FEATURE_VOLUMEID_REISERFS
468 bool "Reiser filesystem"
469 default n
470 depends on VOLUMEID
471 help
472 TODO
473
474config FEATURE_VOLUMEID_FAT
475 bool "fat filesystem"
476 default n
477 depends on VOLUMEID
478 help
479 TODO
480
481config FEATURE_VOLUMEID_HFS
482 bool "hfs filesystem"
483 default n
484 depends on VOLUMEID
485 help
486 TODO
487
488config FEATURE_VOLUMEID_JFS
489 bool "jfs filesystem"
490 default n
491 depends on VOLUMEID
492 help
493 TODO
494
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000495### config FEATURE_VOLUMEID_UFS
496### bool "ufs filesystem"
497### default n
498### depends on VOLUMEID
499### help
500### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000501
502config FEATURE_VOLUMEID_XFS
503 bool "xfs filesystem"
504 default n
505 depends on VOLUMEID
506 help
507 TODO
508
509config FEATURE_VOLUMEID_NTFS
510 bool "ntfs filesystem"
511 default n
512 depends on VOLUMEID
513 help
514 TODO
515
516config FEATURE_VOLUMEID_ISO9660
517 bool "iso9660 filesystem"
518 default n
519 depends on VOLUMEID
520 help
521 TODO
522
523config FEATURE_VOLUMEID_UDF
524 bool "udf filesystem"
525 default n
526 depends on VOLUMEID
527 help
528 TODO
529
530config FEATURE_VOLUMEID_LUKS
531 bool "luks filesystem"
532 default n
533 depends on VOLUMEID
534 help
535 TODO
536
537config FEATURE_VOLUMEID_LINUXSWAP
538 bool "linux swap filesystem"
539 default n
540 depends on VOLUMEID
541 help
542 TODO
543
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000544### config FEATURE_VOLUMEID_LVM
545### bool "lvm"
546### default n
547### depends on VOLUMEID
548### help
549### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000550
551config FEATURE_VOLUMEID_CRAMFS
552 bool "cramfs filesystem"
553 default n
554 depends on VOLUMEID
555 help
556 TODO
557
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000558### config FEATURE_VOLUMEID_HPFS
559### bool "hpfs filesystem"
560### default n
561### depends on VOLUMEID
562### help
563### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000564
565config FEATURE_VOLUMEID_ROMFS
566 bool "romfs filesystem"
567 default n
568 depends on VOLUMEID
569 help
570 TODO
571
572config FEATURE_VOLUMEID_SYSV
573 bool "sysv filesystem"
574 default n
575 depends on VOLUMEID
576 help
577 TODO
578
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000579### config FEATURE_VOLUMEID_MINIX
580### bool "minix filesystem"
581### default n
582### depends on VOLUMEID
583### help
584### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000585
Denis Vlasenkoc5b73722008-03-17 09:21:26 +0000586### These only detect partition tables - not used (yet?)
587### config FEATURE_VOLUMEID_MAC
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000588### bool "mac filesystem"
589### default n
590### depends on VOLUMEID
591### help
592### TODO
Denis Vlasenko1f228982008-04-22 00:16:29 +0000593###
Denis Vlasenkoc5b73722008-03-17 09:21:26 +0000594### config FEATURE_VOLUMEID_MSDOS
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000595### bool "msdos filesystem"
596### default n
597### depends on VOLUMEID
598### help
599### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000600
601config FEATURE_VOLUMEID_OCFS2
602 bool "ocfs2 filesystem"
603 default n
604 depends on VOLUMEID
605 help
606 TODO
607
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000608### config FEATURE_VOLUMEID_HIGHPOINTRAID
609### bool "highpoint raid"
610### default n
611### depends on VOLUMEID
612### help
613### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000614
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000615### config FEATURE_VOLUMEID_ISWRAID
616### bool "intel raid"
617### default n
618### depends on VOLUMEID
619### help
620### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000621
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000622### config FEATURE_VOLUMEID_LSIRAID
623### bool "lsi raid"
624### default n
625### depends on VOLUMEID
626### help
627### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000628
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000629### config FEATURE_VOLUMEID_VIARAID
630### bool "via raid"
631### default n
632### depends on VOLUMEID
633### help
634### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000635
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000636### config FEATURE_VOLUMEID_SILICONRAID
637### bool "silicon raid"
638### default n
639### depends on VOLUMEID
640### help
641### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000642
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000643### config FEATURE_VOLUMEID_NVIDIARAID
644### bool "nvidia raid"
645### default n
646### depends on VOLUMEID
647### help
648### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000649
Denis Vlasenkod25c33f2008-03-17 09:25:05 +0000650### config FEATURE_VOLUMEID_PROMISERAID
651### bool "promise raid"
652### default n
653### depends on VOLUMEID
654### help
655### TODO
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000656
657config FEATURE_VOLUMEID_LINUXRAID
658 bool "linuxraid"
659 default n
660 depends on VOLUMEID
661 help
662 TODO
663
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000664config MOUNT
Mike Frysinger55092282006-02-02 23:14:57 +0000665 bool "mount"
666 default n
667 help
668 All files and filesystems in Unix are arranged into one big directory
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000669 tree. The 'mount' utility is used to graft a filesystem onto a
670 particular part of the tree. A filesystem can either live on a block
Mike Frysinger55092282006-02-02 23:14:57 +0000671 device, or it can be accessible over the network, as is the case with
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000672 NFS filesystems. Most people using BusyBox will also want to enable
Mike Frysinger55092282006-02-02 23:14:57 +0000673 the 'mount' utility.
674
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000675config FEATURE_MOUNT_FAKE
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000676 bool "Support option -f"
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000677 default n
678 depends on MOUNT
679 help
680 Enable support for faking a file system mount.
681
Denis Vlasenkof732e962008-02-18 12:07:49 +0000682config FEATURE_MOUNT_VERBOSE
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000683 bool "Support option -v"
Denis Vlasenkof732e962008-02-18 12:07:49 +0000684 default n
685 depends on MOUNT
686 help
687 Enable multi-level -v[vv...] verbose messages. Useful if you
688 debug mount problems and want to see what is exactly passed
689 to the kernel.
690
Denis Vlasenko2535f122007-09-15 13:28:30 +0000691config FEATURE_MOUNT_HELPERS
692 bool "Support mount helpers"
693 default n
694 depends on MOUNT
695 help
696 Enable mounting of virtual file systems via external helpers.
Denis Vlasenko32d49bc2008-02-03 23:52:41 +0000697 E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
698 "obexfs -b00.11.22.33.44.55 /mnt"
699 Also "mount -t sometype [-o opts] fs /mnt" will try
700 "sometype [-o opts] fs /mnt" if simple mount syscall fails.
701 The idea is to use such virtual filesystems in /etc/fstab.
Denis Vlasenko2535f122007-09-15 13:28:30 +0000702
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000703config FEATURE_MOUNT_LABEL
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000704 bool "Support specifiying devices by label or UUID"
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000705 default n
706 depends on MOUNT
Denis Vlasenko4824cca2008-03-21 18:29:01 +0000707 select VOLUMEID
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000708 help
709 This allows for specifying a device by label or uuid, rather than by
Denis Vlasenko1e19afd2008-10-12 11:20:08 +0000710 name. This feature utilizes the same functionality as blkid/findfs.
Natanael Copa9aff2992009-09-20 04:28:22 +0200711 This also enables label or uuid support for swapon.
Denis Vlasenkode7684a2008-02-18 21:08:49 +0000712
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000713config FEATURE_MOUNT_NFS
Rob Landley2ec922e2006-04-13 23:22:16 +0000714 bool "Support mounting NFS file systems"
Mike Frysinger55092282006-02-02 23:14:57 +0000715 default n
Denis Vlasenkoa7825f22007-06-16 13:56:51 +0000716 depends on MOUNT
717 select FEATURE_HAVE_RPC
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000718 select FEATURE_SYSLOG
Mike Frysinger55092282006-02-02 23:14:57 +0000719 help
Rob Landleye3781b72006-08-08 01:39:49 +0000720 Enable mounting of NFS file systems.
721
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000722config FEATURE_MOUNT_CIFS
Rob Landley89d9d4d2006-09-01 08:10:44 +0000723 bool "Support mounting CIFS/SMB file systems"
724 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000725 depends on MOUNT
Rob Landley89d9d4d2006-09-01 08:10:44 +0000726 help
727 Enable support for samba mounts.
Denis Vlasenko39e93cc2006-09-10 18:38:17 +0000728
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000729config FEATURE_MOUNT_FLAGS
730 depends on MOUNT
Denis Vlasenko39e93cc2006-09-10 18:38:17 +0000731 bool "Support lots of -o flags in mount"
Rob Landleye3781b72006-08-08 01:39:49 +0000732 default y
733 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000734 Without this, mount only supports ro/rw/remount. With this, it
Rob Landleye3781b72006-08-08 01:39:49 +0000735 supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
736 noatime, diratime, nodiratime, loud, bind, move, shared, slave,
737 private, unbindable, rshared, rslave, rprivate, and runbindable.
738
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000739config FEATURE_MOUNT_FSTAB
740 depends on MOUNT
Rob Landleye3781b72006-08-08 01:39:49 +0000741 bool "Support /etc/fstab and -a"
742 default y
743 help
744 Support mount all and looking for files in /etc/fstab.
Mike Frysinger55092282006-02-02 23:14:57 +0000745
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000746config PIVOT_ROOT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000747 bool "pivot_root"
748 default n
749 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000750 The pivot_root utility swaps the mount points for the root filesystem
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000751 with some other mounted filesystem. This allows you to do all sorts
Eric Andersena0ac4522003-02-27 03:14:04 +0000752 of wild and crazy things with your Linux system and is far more
753 powerful than 'chroot'.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000754
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000755 Note: This is for initrd in linux 2.4. Under initramfs (introduced
Rob Landley0f34a822005-10-27 22:55:50 +0000756 in linux 2.6) use switch_root instead.
757
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000758config RDATE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000759 bool "rdate"
760 default n
761 help
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000762 The rdate utility allows you to synchronize the date and time of your
Eric Andersena0ac4522003-02-27 03:14:04 +0000763 system clock with the date and time of a remote networked system using
764 the RFC868 protocol, which is built into the inetd daemon on most
765 systems.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000766
Bernhard Reutner-Fischerc77e8432008-08-19 11:28:52 +0000767config RDEV
768 bool "rdev"
769 default n
770 help
771 Print the device node associated with the filesystem mounted at '/'.
772
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000773config READPROFILE
Mike Frysinger75aa1922005-09-24 23:12:38 +0000774 bool "readprofile"
775 default n
776 help
777 This allows you to parse /proc/profile for basic profiling.
778
Mike Frysinger6b160e42008-02-15 02:27:19 +0000779config RTCWAKE
780 bool "rtcwake"
781 default n
782 help
783 Enter a system sleep state until specified wakeup time.
784
Denis Vlasenko376003b2008-04-21 05:05:17 +0000785config SCRIPT
786 bool "script"
787 default n
788 help
789 The script makes typescript of terminal session.
790
Denys Vlasenko5e611152009-05-19 17:36:16 +0200791config SCRIPTREPLAY
792 bool "scriptreplay"
793 default n
794 help
795 This program replays a typescript, using timing information
796 given by script -t.
797
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000798config SETARCH
Mike Frysinger0a6b0bf2006-02-21 04:26:52 +0000799 bool "setarch"
800 default n
801 help
802 The linux32 utility is used to create a 32bit environment for the
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000803 specified program (usually a shell). It only makes sense to have
Mike Frysinger0a6b0bf2006-02-21 04:26:52 +0000804 this util on a system that supports both 64bit and 32bit userland
805 (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
806
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000807config SWAPONOFF
Eric Andersenc9f20d92002-12-05 08:41:41 +0000808 bool "swaponoff"
809 default n
810 help
Eric Andersena0ac4522003-02-27 03:14:04 +0000811 This option enables both the 'swapon' and the 'swapoff' utilities.
812 Once you have created some swap space using 'mkswap', you also need
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000813 to enable your swap space with the 'swapon' utility. The 'swapoff'
Eric Andersena0ac4522003-02-27 03:14:04 +0000814 utility is used, typically at system shutdown, to disable any swap
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000815 space. If you are not using any swap space, you can leave this
Eric Andersena0ac4522003-02-27 03:14:04 +0000816 option disabled.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000817
Denis Vlasenkoee56e012008-05-18 23:05:34 +0000818config FEATURE_SWAPON_PRI
Bernhard Reutner-Fischer3576bed2008-05-19 08:25:23 +0000819 bool "Support priority option -p"
Denis Vlasenkoee56e012008-05-18 23:05:34 +0000820 default n
821 depends on SWAPONOFF
822 help
823 Enable support for setting swap device priority in swapon.
824
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000825config SWITCH_ROOT
Mike Frysinger55092282006-02-02 23:14:57 +0000826 bool "switch_root"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000827 default n
828 help
Mike Frysinger55092282006-02-02 23:14:57 +0000829 The switch_root utility is used from initramfs to select a new
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000830 root device. Under initramfs, you have to use this instead of
831 pivot_root. (Stop reading here if you don't care why.)
Eric Andersenc9f20d92002-12-05 08:41:41 +0000832
Mike Frysinger55092282006-02-02 23:14:57 +0000833 Booting with initramfs extracts a gzipped cpio archive into rootfs
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000834 (which is a variant of ramfs/tmpfs). Because rootfs can't be moved
835 or unmounted*, pivot_root will not work from initramfs. Instead,
Mike Frysinger55092282006-02-02 23:14:57 +0000836 switch_root deletes everything out of rootfs (including itself),
837 does a mount --move that overmounts rootfs with the new root, and
838 then execs the specified init program.
839
840 * Because the Linux kernel uses rootfs internally as the starting
841 and ending point for searching through the kernel's doubly linked
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000842 list of active mount points. That's why.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000843
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000844config UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000845 bool "umount"
846 default n
847 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000848 When you want to remove a mounted filesystem from its current mount
849 point, for example when you are shutting down the system, the
850 'umount' utility is the tool to use. If you enabled the 'mount'
851 utility, you almost certainly also want to enable 'umount'.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000852
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000853config FEATURE_UMOUNT_ALL
Denis Vlasenko4ee7cd42008-03-17 09:13:22 +0000854 bool "Support option -a"
Rob Landleycc6d8d32006-02-08 20:06:57 +0000855 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000856 depends on UMOUNT
Rob Landleycc6d8d32006-02-08 20:06:57 +0000857 help
858 Support -a option to unmount all currently mounted filesystems.
859
Eric Andersenc9f20d92002-12-05 08:41:41 +0000860comment "Common options for mount/umount"
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000861 depends on MOUNT || UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000862
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000863config FEATURE_MOUNT_LOOP
Rob Landley2ec922e2006-04-13 23:22:16 +0000864 bool "Support loopback mounts"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000865 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000866 depends on MOUNT || UMOUNT
Eric Andersenc9f20d92002-12-05 08:41:41 +0000867 help
Rob Landley6a6798b2005-08-10 20:35:54 +0000868 Enabling this feature allows automatic mounting of files (containing
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000869 filesystem images) via the linux kernel's loopback devices.
870 The mount command will detect you are trying to mount a file instead
871 of a block device, and transparently associate the file with a
872 loopback device. The umount command will also free that loopback
873 device.
Tim Rikerc1ef7bd2006-01-25 00:08:53 +0000874
Rob Landley6a6798b2005-08-10 20:35:54 +0000875 You can still use the 'losetup' utility (to manually associate files
Mike Frysinger71a6a4e2007-01-24 08:24:43 +0000876 with loop devices) if you need to do something advanced, such as
Rob Landley6a6798b2005-08-10 20:35:54 +0000877 specify an offset or cryptographic options to the loopback device.
878 (If you don't want umount to free the loop device, use "umount -D".)
Paul Fox3f6f3172005-07-19 20:55:37 +0000879
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000880config FEATURE_MTAB_SUPPORT
Rob Landley2ec922e2006-04-13 23:22:16 +0000881 bool "Support for the old /etc/mtab file"
Eric Andersenc9f20d92002-12-05 08:41:41 +0000882 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000883 depends on MOUNT || UMOUNT
Denis Vlasenkob1d8e7d2008-02-16 23:28:42 +0000884 select FEATURE_MOUNT_FAKE
Eric Andersenc9f20d92002-12-05 08:41:41 +0000885 help
Rob Landley6a6798b2005-08-10 20:35:54 +0000886 Historically, Unix systems kept track of the currently mounted
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000887 partitions in the file "/etc/mtab". These days, the kernel exports
Rob Landley6a6798b2005-08-10 20:35:54 +0000888 the list of currently mounted partitions in "/proc/mounts", rendering
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000889 the old mtab file obsolete. (In modern systems, /etc/mtab should be
Rob Landley6a6798b2005-08-10 20:35:54 +0000890 a symlink to /proc/mounts.)
Eric Andersena0ac4522003-02-27 03:14:04 +0000891
Rob Landley6a6798b2005-08-10 20:35:54 +0000892 The only reason to have mount maintain an /etc/mtab file itself is if
893 your stripped-down embedded system does not have a /proc directory.
894 If you must use this, keep in mind it's inherently brittle (for
895 example a mount under chroot won't update it), can't handle modern
896 features like separate per-process filesystem namespaces, requires
897 that your /etc directory be writeable, tends to get easily confused
Rob Landley17507fa2006-05-08 02:22:24 +0000898 by --bind or --move mounts, won't update if you rename a directory
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +0000899 that contains a mount point, and so on. (In brief: avoid.)
Rob Landley17507fa2006-05-08 02:22:24 +0000900
901 About the only reason to use this is if you've removed /proc from
902 your kernel.
Eric Andersenc9f20d92002-12-05 08:41:41 +0000903
Eric Andersenc9f20d92002-12-05 08:41:41 +0000904endmenu