[au1000] switch to 2.6.30.1
[openwrt.git] / package / busybox / config / util-linux / Config.in
1 #
2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
4 #
5
6 menu "Linux System Utilities"
7
8 config BUSYBOX_CONFIG_BLKID
9 bool "blkid"
10 default n
11 select BUSYBOX_CONFIG_VOLUMEID
12 help
13 Lists labels and UUIDs of all filesystems.
14 WARNING:
15 With all submodules selected, it will add ~8k to busybox.
16
17 config BUSYBOX_CONFIG_DMESG
18 bool "dmesg"
19 default y
20 help
21 dmesg is used to examine or control the kernel ring buffer. When the
22 Linux kernel prints messages to the system log, they are stored in
23 the kernel ring buffer. You can use dmesg to print the kernel's ring
24 buffer, clear the kernel ring buffer, change the size of the kernel
25 ring buffer, and change the priority level at which kernel messages
26 are also logged to the system console. Enable this option if you
27 wish to enable the 'dmesg' utility.
28
29 config BUSYBOX_CONFIG_FEATURE_DMESG_PRETTY
30 bool "Pretty dmesg output"
31 default y
32 depends on BUSYBOX_CONFIG_DMESG
33 help
34 If you wish to scrub the syslog level from the output, say 'Y' here.
35 The syslog level is a string prefixed to every line with the form
36 "<#>".
37
38 With this option you will see:
39 # dmesg
40 Linux version 2.6.17.4 .....
41 BIOS-provided physical RAM map:
42 BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
43
44 Without this option you will see:
45 # dmesg
46 <5>Linux version 2.6.17.4 .....
47 <6>BIOS-provided physical RAM map:
48 <6> BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
49
50 config BUSYBOX_CONFIG_FBSET
51 bool "fbset"
52 default n
53 help
54 fbset is used to show or change the settings of a Linux frame buffer
55 device. The frame buffer device provides a simple and unique
56 interface to access a graphics display. Enable this option
57 if you wish to enable the 'fbset' utility.
58
59 config BUSYBOX_CONFIG_FEATURE_FBSET_FANCY
60 bool "Turn on extra fbset options"
61 default n
62 depends on BUSYBOX_CONFIG_FBSET
63 help
64 This option enables extended fbset options, allowing one to set the
65 framebuffer size, color depth, etc. interface to access a graphics
66 display. Enable this option if you wish to enable extended fbset
67 options.
68
69 config BUSYBOX_CONFIG_FEATURE_FBSET_READMODE
70 bool "Turn on fbset readmode support"
71 default n
72 depends on BUSYBOX_CONFIG_FBSET
73 help
74 This option allows fbset to read the video mode database stored by
75 default n /etc/fb.modes, which can be used to set frame buffer
76 device to pre-defined video modes.
77
78 config BUSYBOX_CONFIG_FDFLUSH
79 bool "fdflush"
80 default n
81 help
82 fdflush is only needed when changing media on slightly-broken
83 removable media drives. It is used to make Linux believe that a
84 hardware disk-change switch has been actuated, which causes Linux to
85 forget anything it has cached from the previous media. If you have
86 such a slightly-broken drive, you will need to run fdflush every time
87 you change a disk. Most people have working hardware and can safely
88 leave this disabled.
89
90 config BUSYBOX_CONFIG_FDFORMAT
91 bool "fdformat"
92 default n
93 help
94 fdformat is used to low-level format a floppy disk.
95
96 config BUSYBOX_CONFIG_FDISK
97 bool "fdisk"
98 default n
99 help
100 The fdisk utility is used to divide hard disks into one or more
101 logical disks, which are generally called partitions. This utility
102 can be used to list and edit the set of partitions or BSD style
103 'disk slices' that are defined on a hard drive.
104
105 config BUSYBOX_CONFIG_FDISK_SUPPORT_LARGE_DISKS
106 bool "Support over 4GB disks"
107 default y
108 depends on BUSYBOX_CONFIG_FDISK
109 help
110 Enable this option to support large disks > 4GB.
111
112 config BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE
113 bool "Write support"
114 default n
115 depends on BUSYBOX_CONFIG_FDISK
116 help
117 Enabling this option allows you to create or change a partition table
118 and write those changes out to disk. If you leave this option
119 disabled, you will only be able to view the partition table.
120
121 config BUSYBOX_CONFIG_FEATURE_AIX_LABEL
122 bool "Support AIX disklabels"
123 default n
124 depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE
125 help
126 Enabling this option allows you to create or change AIX disklabels.
127 Most people can safely leave this option disabled.
128
129 config BUSYBOX_CONFIG_FEATURE_SGI_LABEL
130 bool "Support SGI disklabels"
131 default n
132 depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE
133 help
134 Enabling this option allows you to create or change SGI disklabels.
135 Most people can safely leave this option disabled.
136
137 config BUSYBOX_CONFIG_FEATURE_SUN_LABEL
138 bool "Support SUN disklabels"
139 default n
140 depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE
141 help
142 Enabling this option allows you to create or change SUN disklabels.
143 Most people can safely leave this option disabled.
144
145 config BUSYBOX_CONFIG_FEATURE_OSF_LABEL
146 bool "Support BSD disklabels"
147 default n
148 depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE
149 help
150 Enabling this option allows you to create or change BSD disklabels
151 and define and edit BSD disk slices.
152
153 config BUSYBOX_CONFIG_FEATURE_FDISK_ADVANCED
154 bool "Support expert mode"
155 default n
156 depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE
157 help
158 Enabling this option allows you to do terribly unsafe things like
159 define arbitrary drive geometry, move the beginning of data in a
160 partition, and similarly evil things. Unless you have a very good
161 reason you would be wise to leave this disabled.
162
163 config BUSYBOX_CONFIG_FINDFS
164 bool "findfs"
165 default n
166 select BUSYBOX_CONFIG_VOLUMEID
167 help
168 Prints the name of a filesystem with given label or UUID.
169 WARNING:
170 With all submodules selected, it will add ~8k to busybox.
171
172 config BUSYBOX_CONFIG_FREERAMDISK
173 bool "freeramdisk"
174 default n
175 help
176 Linux allows you to create ramdisks. This utility allows you to
177 delete them and completely free all memory that was used for the
178 ramdisk. For example, if you boot Linux into a ramdisk and later
179 pivot_root, you may want to free the memory that is allocated to the
180 ramdisk. If you have no use for freeing memory from a ramdisk, leave
181 this disabled.
182
183 config BUSYBOX_CONFIG_FSCK_MINIX
184 bool "fsck_minix"
185 default n
186 help
187 The minix filesystem is a nice, small, compact, read-write filesystem
188 with little overhead. It is not a journaling filesystem however and
189 can experience corruption if it is not properly unmounted or if the
190 power goes off in the middle of a write. This utility allows you to
191 check for and attempt to repair any corruption that occurs to a minix
192 filesystem.
193
194 config BUSYBOX_CONFIG_MKFS_MINIX
195 bool "mkfs_minix"
196 default n
197 help
198 The minix filesystem is a nice, small, compact, read-write filesystem
199 with little overhead. If you wish to be able to create minix
200 filesystems this utility will do the job for you.
201
202 comment "Minix filesystem support"
203 depends on BUSYBOX_CONFIG_FSCK_MINIX || BUSYBOX_CONFIG_MKFS_MINIX
204
205 config BUSYBOX_CONFIG_FEATURE_MINIX2
206 bool "Support Minix fs v2 (fsck_minix/mkfs_minix)"
207 default n
208 depends on BUSYBOX_CONFIG_FSCK_MINIX || BUSYBOX_CONFIG_MKFS_MINIX
209 help
210 If you wish to be able to create version 2 minix filesystems, enable
211 this. If you enabled 'mkfs_minix' then you almost certainly want to
212 be using the version 2 filesystem support.
213
214 config BUSYBOX_CONFIG_GETOPT
215 bool "getopt"
216 default n
217 help
218 The getopt utility is used to break up (parse) options in command
219 lines to make it easy to write complex shell scripts that also check
220 for legal (and illegal) options. If you want to write horribly
221 complex shell scripts, or use some horribly complex shell script
222 written by others, this utility may be for you. Most people will
223 wisely leave this disabled.
224
225 config BUSYBOX_CONFIG_HEXDUMP
226 bool "hexdump"
227 default y
228 help
229 The hexdump utility is used to display binary data in a readable
230 way that is comparable to the output from most hex editors.
231
232 config BUSYBOX_CONFIG_FEATURE_HEXDUMP_REVERSE
233 bool "Support -R, reverse of 'hexdump -Cv'"
234 default n
235 depends on BUSYBOX_CONFIG_HEXDUMP
236 help
237 The hexdump utility is used to display binary data in an ascii
238 readable way. This option creates binary data from an ascii input.
239 NB: this option is non-standard. It's unwise to use it in scripts
240 aimed to be portable.
241
242 config BUSYBOX_CONFIG_HD
243 bool "hd"
244 default n
245 select BUSYBOX_CONFIG_HEXDUMP
246 help
247 hd is an alias to hexdump -C.
248
249 config BUSYBOX_CONFIG_HWCLOCK
250 bool "hwclock"
251 default y
252 help
253 The hwclock utility is used to read and set the hardware clock
254 on a system. This is primarily used to set the current time on
255 shutdown in the hardware clock, so the hardware will keep the
256 correct time when Linux is _not_ running.
257
258 config BUSYBOX_CONFIG_FEATURE_HWCLOCK_LONG_OPTIONS
259 bool "Support long options (--hctosys,...)"
260 default n
261 depends on BUSYBOX_CONFIG_HWCLOCK && BUSYBOX_CONFIG_GETOPT_LONG
262 help
263 By default, the hwclock utility only uses short options. If you
264 are overly fond of its long options, such as --hctosys, --utc, etc)
265 then enable this option.
266
267 config BUSYBOX_CONFIG_FEATURE_HWCLOCK_ADJTIME_FHS
268 bool "Use FHS /var/lib/hwclock/adjtime"
269 default n
270 depends on BUSYBOX_CONFIG_HWCLOCK
271 help
272 Starting with FHS 2.3, the adjtime state file is supposed to exist
273 at /var/lib/hwclock/adjtime instead of /etc/adjtime. If you wish
274 to use the FHS behavior, answer Y here, otherwise answer N for the
275 classic /etc/adjtime path.
276
277 pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
278
279 config BUSYBOX_CONFIG_IPCRM
280 bool "ipcrm"
281 default n
282 select BUSYBOX_CONFIG_FEATURE_SUID
283 help
284 The ipcrm utility allows the removal of System V interprocess
285 communication (IPC) objects and the associated data structures
286 from the system.
287
288 config BUSYBOX_CONFIG_IPCS
289 bool "ipcs"
290 default n
291 select BUSYBOX_CONFIG_FEATURE_SUID
292 help
293 The ipcs utility is used to provide information on the currently
294 allocated System V interprocess (IPC) objects in the system.
295
296 config BUSYBOX_CONFIG_LOSETUP
297 bool "losetup"
298 default n
299 help
300 losetup is used to associate or detach a loop device with a regular
301 file or block device, and to query the status of a loop device. This
302 version does not currently support enabling data encryption.
303
304 config BUSYBOX_CONFIG_MDEV
305 bool "mdev"
306 default n
307 help
308 mdev is a mini-udev implementation for dynamically creating device
309 nodes in the /dev directory.
310
311 For more information, please see docs/mdev.txt
312
313 config BUSYBOX_CONFIG_FEATURE_MDEV_CONF
314 bool "Support /etc/mdev.conf"
315 default n
316 depends on BUSYBOX_CONFIG_MDEV
317 help
318 Add support for the mdev config file to control ownership and
319 permissions of the device nodes.
320
321 For more information, please see docs/mdev.txt
322
323 config BUSYBOX_CONFIG_FEATURE_MDEV_RENAME
324 bool "Support subdirs/symlinks"
325 default n
326 depends on BUSYBOX_CONFIG_FEATURE_MDEV_CONF
327 help
328 Add support for renaming devices and creating symlinks.
329
330 For more information, please see docs/mdev.txt
331
332 config BUSYBOX_CONFIG_FEATURE_MDEV_RENAME_REGEXP
333 bool "Support regular expressions substitutions when renaming device"
334 default n
335 depends on BUSYBOX_CONFIG_FEATURE_MDEV_RENAME
336 help
337 Add support for regular expressions substitutions when renaming
338 device.
339
340 config BUSYBOX_CONFIG_FEATURE_MDEV_EXEC
341 bool "Support command execution at device addition/removal"
342 default n
343 depends on BUSYBOX_CONFIG_FEATURE_MDEV_CONF
344 help
345 This adds support for an optional field to /etc/mdev.conf for
346 executing commands when devices are created/removed.
347
348 For more information, please see docs/mdev.txt
349
350 config BUSYBOX_CONFIG_FEATURE_MDEV_LOAD_FIRMWARE
351 bool "Support loading of firmwares"
352 default n
353 depends on BUSYBOX_CONFIG_MDEV
354 help
355 Some devices need to load firmware before they can be usable.
356
357 These devices will request userspace look up the files in
358 /lib/firmware/ and if it exists, send it to the kernel for
359 loading into the hardware.
360
361 config BUSYBOX_CONFIG_MKSWAP
362 bool "mkswap"
363 default n
364 help
365 The mkswap utility is used to configure a file or disk partition as
366 Linux swap space. This allows Linux to use the entire file or
367 partition as if it were additional RAM, which can greatly increase
368 the capability of low-memory machines. This additional memory is
369 much slower than real RAM, but can be very helpful at preventing your
370 applications being killed by the Linux out of memory (OOM) killer.
371 Once you have created swap space using 'mkswap' you need to enable
372 the swap space using the 'swapon' utility.
373
374 config BUSYBOX_CONFIG_FEATURE_MKSWAP_V0
375 bool "Version 0 support"
376 default n
377 depends on BUSYBOX_CONFIG_MKSWAP
378 # depends on MKSWAP && BUSYBOX_CONFIG_DEPRECATED
379 help
380 Enable support for the old v0 style.
381 If your kernel is older than 2.1.117, then v0 support is the
382 only option.
383
384 config BUSYBOX_CONFIG_MORE
385 bool "more"
386 default n
387 help
388 more is a simple utility which allows you to read text one screen
389 sized page at a time. If you want to read text that is larger than
390 the screen, and you are using anything faster than a 300 baud modem,
391 you will probably find this utility very helpful. If you don't have
392 any need to reading text files, you can leave this disabled.
393
394 config BUSYBOX_CONFIG_FEATURE_USE_TERMIOS
395 bool "Use termios to manipulate the screen"
396 default n
397 depends on BUSYBOX_CONFIG_MORE || BUSYBOX_CONFIG_TOP
398 help
399 This option allows utilities such as 'more' and 'top' to determine
400 the size of the screen. If you leave this disabled, your utilities
401 that display things on the screen will be especially primitive and
402 will be unable to determine the current screen size, and will be
403 unable to move the cursor.
404
405 config BUSYBOX_CONFIG_VOLUMEID
406 bool #No description makes it a hidden option
407 default n
408
409 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_EXT
410 bool "Ext filesystem"
411 default n
412 depends on BUSYBOX_CONFIG_VOLUMEID
413 help
414 TODO
415
416 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_REISERFS
417 bool "Reiser filesystem"
418 default n
419 depends on BUSYBOX_CONFIG_VOLUMEID
420 help
421 TODO
422
423 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_FAT
424 bool "fat filesystem"
425 default n
426 depends on BUSYBOX_CONFIG_VOLUMEID
427 help
428 TODO
429
430 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_HFS
431 bool "hfs filesystem"
432 default n
433 depends on BUSYBOX_CONFIG_VOLUMEID
434 help
435 TODO
436
437 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_JFS
438 bool "jfs filesystem"
439 default n
440 depends on BUSYBOX_CONFIG_VOLUMEID
441 help
442 TODO
443
444 ### config FEATURE_VOLUMEID_UFS
445 ### bool "ufs filesystem"
446 ### default n
447 ### depends on VOLUMEID
448 ### help
449 ### TODO
450
451 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_XFS
452 bool "xfs filesystem"
453 default n
454 depends on BUSYBOX_CONFIG_VOLUMEID
455 help
456 TODO
457
458 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_NTFS
459 bool "ntfs filesystem"
460 default n
461 depends on BUSYBOX_CONFIG_VOLUMEID
462 help
463 TODO
464
465 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_ISO9660
466 bool "iso9660 filesystem"
467 default n
468 depends on BUSYBOX_CONFIG_VOLUMEID
469 help
470 TODO
471
472 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_UDF
473 bool "udf filesystem"
474 default n
475 depends on BUSYBOX_CONFIG_VOLUMEID
476 help
477 TODO
478
479 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_LUKS
480 bool "luks filesystem"
481 default n
482 depends on BUSYBOX_CONFIG_VOLUMEID
483 help
484 TODO
485
486 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_LINUXSWAP
487 bool "linux swap filesystem"
488 default n
489 depends on BUSYBOX_CONFIG_VOLUMEID
490 help
491 TODO
492
493 ### config FEATURE_VOLUMEID_LVM
494 ### bool "lvm"
495 ### default n
496 ### depends on VOLUMEID
497 ### help
498 ### TODO
499
500 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_CRAMFS
501 bool "cramfs filesystem"
502 default n
503 depends on BUSYBOX_CONFIG_VOLUMEID
504 help
505 TODO
506
507 ### config FEATURE_VOLUMEID_HPFS
508 ### bool "hpfs filesystem"
509 ### default n
510 ### depends on VOLUMEID
511 ### help
512 ### TODO
513
514 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_ROMFS
515 bool "romfs filesystem"
516 default n
517 depends on BUSYBOX_CONFIG_VOLUMEID
518 help
519 TODO
520
521 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_SYSV
522 bool "sysv filesystem"
523 default n
524 depends on BUSYBOX_CONFIG_VOLUMEID
525 help
526 TODO
527
528 ### config FEATURE_VOLUMEID_MINIX
529 ### bool "minix filesystem"
530 ### default n
531 ### depends on VOLUMEID
532 ### help
533 ### TODO
534
535 ### These only detect partition tables - not used (yet?)
536 ### config FEATURE_VOLUMEID_MAC
537 ### bool "mac filesystem"
538 ### default n
539 ### depends on VOLUMEID
540 ### help
541 ### TODO
542 ###
543 ### config FEATURE_VOLUMEID_MSDOS
544 ### bool "msdos filesystem"
545 ### default n
546 ### depends on VOLUMEID
547 ### help
548 ### TODO
549
550 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_OCFS2
551 bool "ocfs2 filesystem"
552 default n
553 depends on BUSYBOX_CONFIG_VOLUMEID
554 help
555 TODO
556
557 ### config FEATURE_VOLUMEID_HIGHPOINTRAID
558 ### bool "highpoint raid"
559 ### default n
560 ### depends on VOLUMEID
561 ### help
562 ### TODO
563
564 ### config FEATURE_VOLUMEID_ISWRAID
565 ### bool "intel raid"
566 ### default n
567 ### depends on VOLUMEID
568 ### help
569 ### TODO
570
571 ### config FEATURE_VOLUMEID_LSIRAID
572 ### bool "lsi raid"
573 ### default n
574 ### depends on VOLUMEID
575 ### help
576 ### TODO
577
578 ### config FEATURE_VOLUMEID_VIARAID
579 ### bool "via raid"
580 ### default n
581 ### depends on VOLUMEID
582 ### help
583 ### TODO
584
585 ### config FEATURE_VOLUMEID_SILICONRAID
586 ### bool "silicon raid"
587 ### default n
588 ### depends on VOLUMEID
589 ### help
590 ### TODO
591
592 ### config FEATURE_VOLUMEID_NVIDIARAID
593 ### bool "nvidia raid"
594 ### default n
595 ### depends on VOLUMEID
596 ### help
597 ### TODO
598
599 ### config FEATURE_VOLUMEID_PROMISERAID
600 ### bool "promise raid"
601 ### default n
602 ### depends on VOLUMEID
603 ### help
604 ### TODO
605
606 config BUSYBOX_CONFIG_FEATURE_VOLUMEID_LINUXRAID
607 bool "linuxraid"
608 default n
609 depends on BUSYBOX_CONFIG_VOLUMEID
610 help
611 TODO
612
613 config BUSYBOX_CONFIG_MOUNT
614 bool "mount"
615 default y
616 help
617 All files and filesystems in Unix are arranged into one big directory
618 tree. The 'mount' utility is used to graft a filesystem onto a
619 particular part of the tree. A filesystem can either live on a block
620 device, or it can be accessible over the network, as is the case with
621 NFS filesystems. Most people using BusyBox will also want to enable
622 the 'mount' utility.
623
624 config BUSYBOX_CONFIG_FEATURE_MOUNT_FAKE
625 bool "Support option -f"
626 default n
627 depends on BUSYBOX_CONFIG_MOUNT
628 help
629 Enable support for faking a file system mount.
630
631 config BUSYBOX_CONFIG_FEATURE_MOUNT_VERBOSE
632 bool "Support option -v"
633 default n
634 depends on BUSYBOX_CONFIG_MOUNT
635 help
636 Enable multi-level -v[vv...] verbose messages. Useful if you
637 debug mount problems and want to see what is exactly passed
638 to the kernel.
639
640 config BUSYBOX_CONFIG_FEATURE_MOUNT_HELPERS
641 bool "Support mount helpers"
642 default n
643 depends on BUSYBOX_CONFIG_MOUNT
644 help
645 Enable mounting of virtual file systems via external helpers.
646 E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
647 "obexfs -b00.11.22.33.44.55 /mnt"
648 Also "mount -t sometype [-o opts] fs /mnt" will try
649 "sometype [-o opts] fs /mnt" if simple mount syscall fails.
650 The idea is to use such virtual filesystems in /etc/fstab.
651
652 config BUSYBOX_CONFIG_FEATURE_MOUNT_LABEL
653 bool "Support specifiying devices by label or UUID"
654 default n
655 depends on BUSYBOX_CONFIG_MOUNT
656 select BUSYBOX_CONFIG_VOLUMEID
657 help
658 This allows for specifying a device by label or uuid, rather than by
659 name. This feature utilizes the same functionality as blkid/findfs.
660
661 config BUSYBOX_CONFIG_FEATURE_MOUNT_NFS
662 bool "Support mounting NFS file systems"
663 default y
664 depends on BUSYBOX_CONFIG_MOUNT
665 select BUSYBOX_CONFIG_FEATURE_HAVE_RPC
666 select BUSYBOX_CONFIG_FEATURE_SYSLOG
667 help
668 Enable mounting of NFS file systems.
669
670 config BUSYBOX_CONFIG_FEATURE_MOUNT_CIFS
671 bool "Support mounting CIFS/SMB file systems"
672 default y
673 depends on BUSYBOX_CONFIG_MOUNT
674 help
675 Enable support for samba mounts.
676
677 config BUSYBOX_CONFIG_FEATURE_MOUNT_FLAGS
678 depends on BUSYBOX_CONFIG_MOUNT
679 bool "Support lots of -o flags in mount"
680 default y
681 help
682 Without this, mount only supports ro/rw/remount. With this, it
683 supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
684 noatime, diratime, nodiratime, loud, bind, move, shared, slave,
685 private, unbindable, rshared, rslave, rprivate, and runbindable.
686
687 config BUSYBOX_CONFIG_FEATURE_MOUNT_FSTAB
688 depends on BUSYBOX_CONFIG_MOUNT
689 bool "Support /etc/fstab and -a"
690 default y
691 help
692 Support mount all and looking for files in /etc/fstab.
693
694 config BUSYBOX_CONFIG_PIVOT_ROOT
695 bool "pivot_root"
696 default y
697 help
698 The pivot_root utility swaps the mount points for the root filesystem
699 with some other mounted filesystem. This allows you to do all sorts
700 of wild and crazy things with your Linux system and is far more
701 powerful than 'chroot'.
702
703 Note: This is for initrd in linux 2.4. Under initramfs (introduced
704 in linux 2.6) use switch_root instead.
705
706 config BUSYBOX_CONFIG_RDATE
707 bool "rdate"
708 default y
709 help
710 The rdate utility allows you to synchronize the date and time of your
711 system clock with the date and time of a remote networked system using
712 the RFC868 protocol, which is built into the inetd daemon on most
713 systems.
714
715 config BUSYBOX_CONFIG_RDEV
716 bool "rdev"
717 default n
718 help
719 Print the device node associated with the filesystem mounted at '/'.
720
721 config BUSYBOX_CONFIG_READPROFILE
722 bool "readprofile"
723 default n
724 help
725 This allows you to parse /proc/profile for basic profiling.
726
727 config BUSYBOX_CONFIG_RTCWAKE
728 bool "rtcwake"
729 default n
730 help
731 Enter a system sleep state until specified wakeup time.
732
733 config BUSYBOX_CONFIG_SCRIPT
734 bool "script"
735 default n
736 help
737 The script makes typescript of terminal session.
738
739 config BUSYBOX_CONFIG_SETARCH
740 bool "setarch"
741 default n
742 help
743 The linux32 utility is used to create a 32bit environment for the
744 specified program (usually a shell). It only makes sense to have
745 this util on a system that supports both 64bit and 32bit userland
746 (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
747
748 config BUSYBOX_CONFIG_SWAPONOFF
749 bool "swaponoff"
750 default n
751 help
752 This option enables both the 'swapon' and the 'swapoff' utilities.
753 Once you have created some swap space using 'mkswap', you also need
754 to enable your swap space with the 'swapon' utility. The 'swapoff'
755 utility is used, typically at system shutdown, to disable any swap
756 space. If you are not using any swap space, you can leave this
757 option disabled.
758
759 config BUSYBOX_CONFIG_FEATURE_SWAPON_PRI
760 bool "Support priority option -p"
761 default n
762 depends on BUSYBOX_CONFIG_SWAPONOFF
763 help
764 Enable support for setting swap device priority in swapon.
765
766 config BUSYBOX_CONFIG_SWITCH_ROOT
767 bool "switch_root"
768 default y
769 help
770 The switch_root utility is used from initramfs to select a new
771 root device. Under initramfs, you have to use this instead of
772 pivot_root. (Stop reading here if you don't care why.)
773
774 Booting with initramfs extracts a gzipped cpio archive into rootfs
775 (which is a variant of ramfs/tmpfs). Because rootfs can't be moved
776 or unmounted*, pivot_root will not work from initramfs. Instead,
777 switch_root deletes everything out of rootfs (including itself),
778 does a mount --move that overmounts rootfs with the new root, and
779 then execs the specified init program.
780
781 * Because the Linux kernel uses rootfs internally as the starting
782 and ending point for searching through the kernel's doubly linked
783 list of active mount points. That's why.
784
785 config BUSYBOX_CONFIG_UMOUNT
786 bool "umount"
787 default y
788 help
789 When you want to remove a mounted filesystem from its current mount
790 point, for example when you are shutting down the system, the
791 'umount' utility is the tool to use. If you enabled the 'mount'
792 utility, you almost certainly also want to enable 'umount'.
793
794 config BUSYBOX_CONFIG_FEATURE_UMOUNT_ALL
795 bool "Support option -a"
796 default y
797 depends on BUSYBOX_CONFIG_UMOUNT
798 help
799 Support -a option to unmount all currently mounted filesystems.
800
801 comment "Common options for mount/umount"
802 depends on BUSYBOX_CONFIG_MOUNT || BUSYBOX_CONFIG_UMOUNT
803
804 config BUSYBOX_CONFIG_FEATURE_MOUNT_LOOP
805 bool "Support loopback mounts"
806 default y
807 depends on BUSYBOX_CONFIG_MOUNT || BUSYBOX_CONFIG_UMOUNT
808 help
809 Enabling this feature allows automatic mounting of files (containing
810 filesystem images) via the linux kernel's loopback devices.
811 The mount command will detect you are trying to mount a file instead
812 of a block device, and transparently associate the file with a
813 loopback device. The umount command will also free that loopback
814 device.
815
816 You can still use the 'losetup' utility (to manually associate files
817 with loop devices) if you need to do something advanced, such as
818 specify an offset or cryptographic options to the loopback device.
819 (If you don't want umount to free the loop device, use "umount -D".)
820
821 config BUSYBOX_CONFIG_FEATURE_MTAB_SUPPORT
822 bool "Support for the old /etc/mtab file"
823 default n
824 depends on BUSYBOX_CONFIG_MOUNT || BUSYBOX_CONFIG_UMOUNT
825 select BUSYBOX_CONFIG_FEATURE_MOUNT_FAKE
826 help
827 Historically, Unix systems kept track of the currently mounted
828 partitions in the file "/etc/mtab". These days, the kernel exports
829 the list of currently mounted partitions in "/proc/mounts", rendering
830 the old mtab file obsolete. (In modern systems, /etc/mtab should be
831 a symlink to /proc/mounts.)
832
833 The only reason to have mount maintain an /etc/mtab file itself is if
834 your stripped-down embedded system does not have a /proc directory.
835 If you must use this, keep in mind it's inherently brittle (for
836 example a mount under chroot won't update it), can't handle modern
837 features like separate per-process filesystem namespaces, requires
838 that your /etc directory be writeable, tends to get easily confused
839 by --bind or --move mounts, won't update if you rename a directory
840 that contains a mount point, and so on. (In brief: avoid.)
841
842 About the only reason to use this is if you've removed /proc from
843 your kernel.
844
845 endmenu
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