mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
9aff29997e
function old new delta swap_enable_disable 130 150 +20 resolve_mount_spec 76 96 +20 mount_main 1152 1154 +2 findfs_main 125 80 -45 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/1 up/down: 42/-45) Total: -3 bytes Signed-off-by: Natanael Copa <natanael.copa@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
886 lines
24 KiB
Plaintext
886 lines
24 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see scripts/kbuild/config-language.txt.
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#
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menu "Linux System Utilities"
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config ACPID
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bool "acpid"
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default n
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help
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acpid listens to ACPI events coming either in textual form from
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/proc/acpi/event (though it is marked deprecated it is still widely
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used and _is_ a standard) or in binary form from specified evdevs
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(just use /dev/input/event*).
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It parses the event to retrieve ACTION and a possible PARAMETER.
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It then spawns /etc/acpi/<ACTION>[/<PARAMETER>] either via run-parts
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(if the resulting path is a directory) or directly as an executable.
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N.B. acpid relies on run-parts so have the latter installed.
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config FEATURE_ACPID_COMPAT
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bool "Accept and ignore redundant options"
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default n
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depends on ACPID
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help
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Accept and ignore compatibility options -g -m -s -S -v.
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config BLKID
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bool "blkid"
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default n
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select VOLUMEID
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help
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Lists labels and UUIDs of all filesystems.
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WARNING:
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With all submodules selected, it will add ~8k to busybox.
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config DMESG
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bool "dmesg"
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default n
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help
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dmesg is used to examine or control the kernel ring buffer. When the
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Linux kernel prints messages to the system log, they are stored in
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the kernel ring buffer. You can use dmesg to print the kernel's ring
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buffer, clear the kernel ring buffer, change the size of the kernel
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ring buffer, and change the priority level at which kernel messages
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are also logged to the system console. Enable this option if you
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wish to enable the 'dmesg' utility.
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config FEATURE_DMESG_PRETTY
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bool "Pretty dmesg output"
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default y
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depends on DMESG
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help
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If you wish to scrub the syslog level from the output, say 'Y' here.
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The syslog level is a string prefixed to every line with the form
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"<#>".
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With this option you will see:
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# dmesg
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Linux version 2.6.17.4 .....
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BIOS-provided physical RAM map:
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BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
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Without this option you will see:
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# dmesg
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<5>Linux version 2.6.17.4 .....
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<6>BIOS-provided physical RAM map:
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<6> BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
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config FBSET
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bool "fbset"
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default n
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help
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fbset is used to show or change the settings of a Linux frame buffer
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device. The frame buffer device provides a simple and unique
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interface to access a graphics display. Enable this option
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if you wish to enable the 'fbset' utility.
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config FEATURE_FBSET_FANCY
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bool "Turn on extra fbset options"
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default n
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depends on FBSET
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help
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This option enables extended fbset options, allowing one to set the
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framebuffer size, color depth, etc. interface to access a graphics
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display. Enable this option if you wish to enable extended fbset
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options.
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config FEATURE_FBSET_READMODE
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bool "Turn on fbset readmode support"
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default n
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depends on FBSET
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help
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This option allows fbset to read the video mode database stored by
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default as /etc/fb.modes, which can be used to set frame buffer
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device to pre-defined video modes.
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config FDFLUSH
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bool "fdflush"
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default n
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help
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fdflush is only needed when changing media on slightly-broken
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removable media drives. It is used to make Linux believe that a
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hardware disk-change switch has been actuated, which causes Linux to
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forget anything it has cached from the previous media. If you have
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such a slightly-broken drive, you will need to run fdflush every time
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you change a disk. Most people have working hardware and can safely
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leave this disabled.
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config FDFORMAT
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bool "fdformat"
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default n
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help
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fdformat is used to low-level format a floppy disk.
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config FDISK
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bool "fdisk"
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default n
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help
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The fdisk utility is used to divide hard disks into one or more
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logical disks, which are generally called partitions. This utility
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can be used to list and edit the set of partitions or BSD style
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'disk slices' that are defined on a hard drive.
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config FDISK_SUPPORT_LARGE_DISKS
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bool "Support over 4GB disks"
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default y
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depends on FDISK
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help
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Enable this option to support large disks > 4GB.
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config FEATURE_FDISK_WRITABLE
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bool "Write support"
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default y
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depends on FDISK
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help
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Enabling this option allows you to create or change a partition table
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and write those changes out to disk. If you leave this option
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disabled, you will only be able to view the partition table.
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config FEATURE_AIX_LABEL
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bool "Support AIX disklabels"
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default n
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depends on FDISK && FEATURE_FDISK_WRITABLE
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help
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Enabling this option allows you to create or change AIX disklabels.
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Most people can safely leave this option disabled.
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config FEATURE_SGI_LABEL
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bool "Support SGI disklabels"
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default n
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depends on FDISK && FEATURE_FDISK_WRITABLE
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help
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Enabling this option allows you to create or change SGI disklabels.
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Most people can safely leave this option disabled.
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config FEATURE_SUN_LABEL
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bool "Support SUN disklabels"
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default n
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depends on FDISK && FEATURE_FDISK_WRITABLE
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help
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Enabling this option allows you to create or change SUN disklabels.
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Most people can safely leave this option disabled.
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config FEATURE_OSF_LABEL
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bool "Support BSD disklabels"
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default n
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depends on FDISK && FEATURE_FDISK_WRITABLE
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help
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Enabling this option allows you to create or change BSD disklabels
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and define and edit BSD disk slices.
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config FEATURE_FDISK_ADVANCED
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bool "Support expert mode"
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default n
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depends on FDISK && FEATURE_FDISK_WRITABLE
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help
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Enabling this option allows you to do terribly unsafe things like
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define arbitrary drive geometry, move the beginning of data in a
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partition, and similarly evil things. Unless you have a very good
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reason you would be wise to leave this disabled.
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config FINDFS
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bool "findfs"
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default n
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select VOLUMEID
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help
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Prints the name of a filesystem with given label or UUID.
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WARNING:
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With all submodules selected, it will add ~8k to busybox.
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config FREERAMDISK
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bool "freeramdisk"
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default n
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help
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Linux allows you to create ramdisks. This utility allows you to
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delete them and completely free all memory that was used for the
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ramdisk. For example, if you boot Linux into a ramdisk and later
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pivot_root, you may want to free the memory that is allocated to the
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ramdisk. If you have no use for freeing memory from a ramdisk, leave
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this disabled.
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config FSCK_MINIX
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bool "fsck_minix"
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default n
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help
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The minix filesystem is a nice, small, compact, read-write filesystem
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with little overhead. It is not a journaling filesystem however and
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can experience corruption if it is not properly unmounted or if the
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power goes off in the middle of a write. This utility allows you to
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check for and attempt to repair any corruption that occurs to a minix
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filesystem.
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config MKFS_MINIX
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bool "mkfs_minix"
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default n
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help
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The minix filesystem is a nice, small, compact, read-write filesystem
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with little overhead. If you wish to be able to create minix
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filesystems this utility will do the job for you.
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comment "Minix filesystem support"
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depends on FSCK_MINIX || MKFS_MINIX
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config FEATURE_MINIX2
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bool "Support Minix fs v2 (fsck_minix/mkfs_minix)"
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default y
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depends on FSCK_MINIX || MKFS_MINIX
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help
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If you wish to be able to create version 2 minix filesystems, enable
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this. If you enabled 'mkfs_minix' then you almost certainly want to
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be using the version 2 filesystem support.
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config MKFS_VFAT
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bool "mkfs_vfat"
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default n
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help
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Utility to create FAT32 filesystems.
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config GETOPT
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bool "getopt"
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default n
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help
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The getopt utility is used to break up (parse) options in command
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lines to make it easy to write complex shell scripts that also check
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for legal (and illegal) options. If you want to write horribly
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complex shell scripts, or use some horribly complex shell script
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written by others, this utility may be for you. Most people will
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wisely leave this disabled.
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config FEATURE_GETOPT_LONG
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bool "Support option -l"
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default y if LONG_OPTS
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depends on GETOPT
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help
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Enable support for long options (option -l).
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config HEXDUMP
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bool "hexdump"
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default n
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help
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The hexdump utility is used to display binary data in a readable
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way that is comparable to the output from most hex editors.
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config FEATURE_HEXDUMP_REVERSE
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bool "Support -R, reverse of 'hexdump -Cv'"
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default n
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depends on HEXDUMP
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help
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The hexdump utility is used to display binary data in an ascii
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readable way. This option creates binary data from an ascii input.
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NB: this option is non-standard. It's unwise to use it in scripts
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aimed to be portable.
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config HD
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bool "hd"
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default n
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select HEXDUMP
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help
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hd is an alias to hexdump -C.
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config HWCLOCK
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bool "hwclock"
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default n
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help
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The hwclock utility is used to read and set the hardware clock
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on a system. This is primarily used to set the current time on
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shutdown in the hardware clock, so the hardware will keep the
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correct time when Linux is _not_ running.
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config FEATURE_HWCLOCK_LONG_OPTIONS
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bool "Support long options (--hctosys,...)"
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default n
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depends on HWCLOCK && LONG_OPTS
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help
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By default, the hwclock utility only uses short options. If you
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are overly fond of its long options, such as --hctosys, --utc, etc)
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then enable this option.
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config FEATURE_HWCLOCK_ADJTIME_FHS
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bool "Use FHS /var/lib/hwclock/adjtime"
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default y
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depends on HWCLOCK
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help
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Starting with FHS 2.3, the adjtime state file is supposed to exist
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at /var/lib/hwclock/adjtime instead of /etc/adjtime. If you wish
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to use the FHS behavior, answer Y here, otherwise answer N for the
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classic /etc/adjtime path.
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pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
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config IPCRM
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bool "ipcrm"
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default n
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select FEATURE_SUID
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help
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The ipcrm utility allows the removal of System V interprocess
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communication (IPC) objects and the associated data structures
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from the system.
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config IPCS
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bool "ipcs"
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default n
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select FEATURE_SUID
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help
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The ipcs utility is used to provide information on the currently
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allocated System V interprocess (IPC) objects in the system.
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config LOSETUP
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bool "losetup"
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default n
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help
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losetup is used to associate or detach a loop device with a regular
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file or block device, and to query the status of a loop device. This
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version does not currently support enabling data encryption.
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config MDEV
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bool "mdev"
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default n
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help
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mdev is a mini-udev implementation for dynamically creating device
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nodes in the /dev directory.
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For more information, please see docs/mdev.txt
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config FEATURE_MDEV_CONF
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bool "Support /etc/mdev.conf"
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default n
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depends on MDEV
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help
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Add support for the mdev config file to control ownership and
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permissions of the device nodes.
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For more information, please see docs/mdev.txt
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config FEATURE_MDEV_RENAME
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bool "Support subdirs/symlinks"
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default n
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depends on FEATURE_MDEV_CONF
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help
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Add support for renaming devices and creating symlinks.
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For more information, please see docs/mdev.txt
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config FEATURE_MDEV_RENAME_REGEXP
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bool "Support regular expressions substitutions when renaming device"
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default n
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depends on FEATURE_MDEV_RENAME
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help
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Add support for regular expressions substitutions when renaming
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device.
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config FEATURE_MDEV_EXEC
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bool "Support command execution at device addition/removal"
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default n
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depends on FEATURE_MDEV_CONF
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help
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This adds support for an optional field to /etc/mdev.conf for
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executing commands when devices are created/removed.
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For more information, please see docs/mdev.txt
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config FEATURE_MDEV_LOAD_FIRMWARE
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bool "Support loading of firmwares"
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default n
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depends on MDEV
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help
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Some devices need to load firmware before they can be usable.
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These devices will request userspace look up the files in
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/lib/firmware/ and if it exists, send it to the kernel for
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loading into the hardware.
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config MKSWAP
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bool "mkswap"
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default n
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help
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The mkswap utility is used to configure a file or disk partition as
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Linux swap space. This allows Linux to use the entire file or
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partition as if it were additional RAM, which can greatly increase
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the capability of low-memory machines. This additional memory is
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much slower than real RAM, but can be very helpful at preventing your
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applications being killed by the Linux out of memory (OOM) killer.
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Once you have created swap space using 'mkswap' you need to enable
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the swap space using the 'swapon' utility.
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config FEATURE_MKSWAP_UUID
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bool "UUID support"
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default n
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depends on MKSWAP
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help
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Generate swap spaces with universally unique identifiers.
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config MORE
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bool "more"
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default n
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help
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more is a simple utility which allows you to read text one screen
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sized page at a time. If you want to read text that is larger than
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the screen, and you are using anything faster than a 300 baud modem,
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you will probably find this utility very helpful. If you don't have
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any need to reading text files, you can leave this disabled.
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config FEATURE_USE_TERMIOS
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bool "Use termios to manipulate the screen"
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default y
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depends on MORE || TOP
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help
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This option allows utilities such as 'more' and 'top' to determine
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the size of the screen. If you leave this disabled, your utilities
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that display things on the screen will be especially primitive and
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will be unable to determine the current screen size, and will be
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unable to move the cursor.
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config VOLUMEID
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bool #No description makes it a hidden option
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default n
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config FEATURE_VOLUMEID_EXT
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bool "Ext filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_REISERFS
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bool "Reiser filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_FAT
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bool "fat filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_HFS
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bool "hfs filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_JFS
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bool "jfs filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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### config FEATURE_VOLUMEID_UFS
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### bool "ufs filesystem"
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### default n
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### depends on VOLUMEID
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### help
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### TODO
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config FEATURE_VOLUMEID_XFS
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bool "xfs filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_NTFS
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bool "ntfs filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_ISO9660
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bool "iso9660 filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_UDF
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bool "udf filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_LUKS
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bool "luks filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_LINUXSWAP
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bool "linux swap filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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### config FEATURE_VOLUMEID_LVM
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### bool "lvm"
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### default n
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### depends on VOLUMEID
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### help
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### TODO
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config FEATURE_VOLUMEID_CRAMFS
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bool "cramfs filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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### config FEATURE_VOLUMEID_HPFS
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### bool "hpfs filesystem"
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### default n
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### depends on VOLUMEID
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### help
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### TODO
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config FEATURE_VOLUMEID_ROMFS
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bool "romfs filesystem"
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default n
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depends on VOLUMEID
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help
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TODO
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config FEATURE_VOLUMEID_SYSV
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bool "sysv filesystem"
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default n
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|
depends on VOLUMEID
|
|
help
|
|
TODO
|
|
|
|
### config FEATURE_VOLUMEID_MINIX
|
|
### bool "minix filesystem"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### These only detect partition tables - not used (yet?)
|
|
### config FEATURE_VOLUMEID_MAC
|
|
### bool "mac filesystem"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
###
|
|
### config FEATURE_VOLUMEID_MSDOS
|
|
### bool "msdos filesystem"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
config FEATURE_VOLUMEID_OCFS2
|
|
bool "ocfs2 filesystem"
|
|
default n
|
|
depends on VOLUMEID
|
|
help
|
|
TODO
|
|
|
|
### config FEATURE_VOLUMEID_HIGHPOINTRAID
|
|
### bool "highpoint raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### config FEATURE_VOLUMEID_ISWRAID
|
|
### bool "intel raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### config FEATURE_VOLUMEID_LSIRAID
|
|
### bool "lsi raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### config FEATURE_VOLUMEID_VIARAID
|
|
### bool "via raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### config FEATURE_VOLUMEID_SILICONRAID
|
|
### bool "silicon raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### config FEATURE_VOLUMEID_NVIDIARAID
|
|
### bool "nvidia raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
### config FEATURE_VOLUMEID_PROMISERAID
|
|
### bool "promise raid"
|
|
### default n
|
|
### depends on VOLUMEID
|
|
### help
|
|
### TODO
|
|
|
|
config FEATURE_VOLUMEID_LINUXRAID
|
|
bool "linuxraid"
|
|
default n
|
|
depends on VOLUMEID
|
|
help
|
|
TODO
|
|
|
|
config MOUNT
|
|
bool "mount"
|
|
default n
|
|
help
|
|
All files and filesystems in Unix are arranged into one big directory
|
|
tree. The 'mount' utility is used to graft a filesystem onto a
|
|
particular part of the tree. A filesystem can either live on a block
|
|
device, or it can be accessible over the network, as is the case with
|
|
NFS filesystems. Most people using BusyBox will also want to enable
|
|
the 'mount' utility.
|
|
|
|
config FEATURE_MOUNT_FAKE
|
|
bool "Support option -f"
|
|
default n
|
|
depends on MOUNT
|
|
help
|
|
Enable support for faking a file system mount.
|
|
|
|
config FEATURE_MOUNT_VERBOSE
|
|
bool "Support option -v"
|
|
default n
|
|
depends on MOUNT
|
|
help
|
|
Enable multi-level -v[vv...] verbose messages. Useful if you
|
|
debug mount problems and want to see what is exactly passed
|
|
to the kernel.
|
|
|
|
config FEATURE_MOUNT_HELPERS
|
|
bool "Support mount helpers"
|
|
default n
|
|
depends on MOUNT
|
|
help
|
|
Enable mounting of virtual file systems via external helpers.
|
|
E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
|
|
"obexfs -b00.11.22.33.44.55 /mnt"
|
|
Also "mount -t sometype [-o opts] fs /mnt" will try
|
|
"sometype [-o opts] fs /mnt" if simple mount syscall fails.
|
|
The idea is to use such virtual filesystems in /etc/fstab.
|
|
|
|
config FEATURE_MOUNT_LABEL
|
|
bool "Support specifiying devices by label or UUID"
|
|
default n
|
|
depends on MOUNT
|
|
select VOLUMEID
|
|
help
|
|
This allows for specifying a device by label or uuid, rather than by
|
|
name. This feature utilizes the same functionality as blkid/findfs.
|
|
This also enables label or uuid support for swapon.
|
|
|
|
config FEATURE_MOUNT_NFS
|
|
bool "Support mounting NFS file systems"
|
|
default n
|
|
depends on MOUNT
|
|
select FEATURE_HAVE_RPC
|
|
select FEATURE_SYSLOG
|
|
help
|
|
Enable mounting of NFS file systems.
|
|
|
|
config FEATURE_MOUNT_CIFS
|
|
bool "Support mounting CIFS/SMB file systems"
|
|
default n
|
|
depends on MOUNT
|
|
help
|
|
Enable support for samba mounts.
|
|
|
|
config FEATURE_MOUNT_FLAGS
|
|
depends on MOUNT
|
|
bool "Support lots of -o flags in mount"
|
|
default y
|
|
help
|
|
Without this, mount only supports ro/rw/remount. With this, it
|
|
supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
|
|
noatime, diratime, nodiratime, loud, bind, move, shared, slave,
|
|
private, unbindable, rshared, rslave, rprivate, and runbindable.
|
|
|
|
config FEATURE_MOUNT_FSTAB
|
|
depends on MOUNT
|
|
bool "Support /etc/fstab and -a"
|
|
default y
|
|
help
|
|
Support mount all and looking for files in /etc/fstab.
|
|
|
|
config PIVOT_ROOT
|
|
bool "pivot_root"
|
|
default n
|
|
help
|
|
The pivot_root utility swaps the mount points for the root filesystem
|
|
with some other mounted filesystem. This allows you to do all sorts
|
|
of wild and crazy things with your Linux system and is far more
|
|
powerful than 'chroot'.
|
|
|
|
Note: This is for initrd in linux 2.4. Under initramfs (introduced
|
|
in linux 2.6) use switch_root instead.
|
|
|
|
config RDATE
|
|
bool "rdate"
|
|
default n
|
|
help
|
|
The rdate utility allows you to synchronize the date and time of your
|
|
system clock with the date and time of a remote networked system using
|
|
the RFC868 protocol, which is built into the inetd daemon on most
|
|
systems.
|
|
|
|
config RDEV
|
|
bool "rdev"
|
|
default n
|
|
help
|
|
Print the device node associated with the filesystem mounted at '/'.
|
|
|
|
config READPROFILE
|
|
bool "readprofile"
|
|
default n
|
|
help
|
|
This allows you to parse /proc/profile for basic profiling.
|
|
|
|
config RTCWAKE
|
|
bool "rtcwake"
|
|
default n
|
|
help
|
|
Enter a system sleep state until specified wakeup time.
|
|
|
|
config SCRIPT
|
|
bool "script"
|
|
default n
|
|
help
|
|
The script makes typescript of terminal session.
|
|
|
|
config SCRIPTREPLAY
|
|
bool "scriptreplay"
|
|
default n
|
|
help
|
|
This program replays a typescript, using timing information
|
|
given by script -t.
|
|
|
|
config SETARCH
|
|
bool "setarch"
|
|
default n
|
|
help
|
|
The linux32 utility is used to create a 32bit environment for the
|
|
specified program (usually a shell). It only makes sense to have
|
|
this util on a system that supports both 64bit and 32bit userland
|
|
(like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
|
|
|
|
config SWAPONOFF
|
|
bool "swaponoff"
|
|
default n
|
|
help
|
|
This option enables both the 'swapon' and the 'swapoff' utilities.
|
|
Once you have created some swap space using 'mkswap', you also need
|
|
to enable your swap space with the 'swapon' utility. The 'swapoff'
|
|
utility is used, typically at system shutdown, to disable any swap
|
|
space. If you are not using any swap space, you can leave this
|
|
option disabled.
|
|
|
|
config FEATURE_SWAPON_PRI
|
|
bool "Support priority option -p"
|
|
default n
|
|
depends on SWAPONOFF
|
|
help
|
|
Enable support for setting swap device priority in swapon.
|
|
|
|
config SWITCH_ROOT
|
|
bool "switch_root"
|
|
default n
|
|
help
|
|
The switch_root utility is used from initramfs to select a new
|
|
root device. Under initramfs, you have to use this instead of
|
|
pivot_root. (Stop reading here if you don't care why.)
|
|
|
|
Booting with initramfs extracts a gzipped cpio archive into rootfs
|
|
(which is a variant of ramfs/tmpfs). Because rootfs can't be moved
|
|
or unmounted*, pivot_root will not work from initramfs. Instead,
|
|
switch_root deletes everything out of rootfs (including itself),
|
|
does a mount --move that overmounts rootfs with the new root, and
|
|
then execs the specified init program.
|
|
|
|
* Because the Linux kernel uses rootfs internally as the starting
|
|
and ending point for searching through the kernel's doubly linked
|
|
list of active mount points. That's why.
|
|
|
|
config UMOUNT
|
|
bool "umount"
|
|
default n
|
|
help
|
|
When you want to remove a mounted filesystem from its current mount
|
|
point, for example when you are shutting down the system, the
|
|
'umount' utility is the tool to use. If you enabled the 'mount'
|
|
utility, you almost certainly also want to enable 'umount'.
|
|
|
|
config FEATURE_UMOUNT_ALL
|
|
bool "Support option -a"
|
|
default n
|
|
depends on UMOUNT
|
|
help
|
|
Support -a option to unmount all currently mounted filesystems.
|
|
|
|
comment "Common options for mount/umount"
|
|
depends on MOUNT || UMOUNT
|
|
|
|
config FEATURE_MOUNT_LOOP
|
|
bool "Support loopback mounts"
|
|
default n
|
|
depends on MOUNT || UMOUNT
|
|
help
|
|
Enabling this feature allows automatic mounting of files (containing
|
|
filesystem images) via the linux kernel's loopback devices.
|
|
The mount command will detect you are trying to mount a file instead
|
|
of a block device, and transparently associate the file with a
|
|
loopback device. The umount command will also free that loopback
|
|
device.
|
|
|
|
You can still use the 'losetup' utility (to manually associate files
|
|
with loop devices) if you need to do something advanced, such as
|
|
specify an offset or cryptographic options to the loopback device.
|
|
(If you don't want umount to free the loop device, use "umount -D".)
|
|
|
|
config FEATURE_MTAB_SUPPORT
|
|
bool "Support for the old /etc/mtab file"
|
|
default n
|
|
depends on MOUNT || UMOUNT
|
|
select FEATURE_MOUNT_FAKE
|
|
help
|
|
Historically, Unix systems kept track of the currently mounted
|
|
partitions in the file "/etc/mtab". These days, the kernel exports
|
|
the list of currently mounted partitions in "/proc/mounts", rendering
|
|
the old mtab file obsolete. (In modern systems, /etc/mtab should be
|
|
a symlink to /proc/mounts.)
|
|
|
|
The only reason to have mount maintain an /etc/mtab file itself is if
|
|
your stripped-down embedded system does not have a /proc directory.
|
|
If you must use this, keep in mind it's inherently brittle (for
|
|
example a mount under chroot won't update it), can't handle modern
|
|
features like separate per-process filesystem namespaces, requires
|
|
that your /etc directory be writeable, tends to get easily confused
|
|
by --bind or --move mounts, won't update if you rename a directory
|
|
that contains a mount point, and so on. (In brief: avoid.)
|
|
|
|
About the only reason to use this is if you've removed /proc from
|
|
your kernel.
|
|
|
|
endmenu
|