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109 lines
3.1 KiB
Plaintext
109 lines
3.1 KiB
Plaintext
(*
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Module: Crypttab
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Parses /etc/crypttab from the cryptsetup package.
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Author: Frédéric Lespez <frederic.lespez@free.fr>
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About: Reference
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This lens tries to keep as close as possible to `man crypttab` where possible.
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About: License
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This file is licensed under the LGPL v2+, like the rest of Augeas.
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About: Lens Usage
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Sample usage of this lens in augtool
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* Create a new entry for an encrypted block devices
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> ins 01 after /files/etc/crypttab/*[last()]
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> set /files/etc/crypttab/01/target crypt_sda2
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> set /files/etc/crypttab/01/device /dev/sda2
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> set /files/etc/crypttab/01/password /dev/random
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> set /files/etc/crypttab/01/opt swap
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* Print the entry applying to the "/dev/sda2" device
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> print /files/etc/crypttab/01
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* Remove the entry applying to the "/dev/sda2" device
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> rm /files/etc/crypttab/*[device="/dev/sda2"]
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About: Configuration files
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This lens applies to /etc/crypttab. See <filter>.
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*)
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module Crypttab =
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autoload xfm
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(************************************************************************
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* Group: USEFUL PRIMITIVES
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*************************************************************************)
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(* Group: Separators *)
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(* Variable: sep_tab *)
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let sep_tab = Sep.tab
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(* Variable: comma *)
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let comma = Sep.comma
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(* Group: Generic primitives *)
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(* Variable: eol *)
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let eol = Util.eol
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(* Variable: comment *)
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let comment = Util.comment
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(* Variable: empty *)
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let empty = Util.empty
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(* Variable: word *)
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let word = Rx.word
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(* Variable: optval *)
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let optval = /[A-Za-z0-9\/_.:-]+/
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(* Variable: target *)
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let target = Rx.device_name
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(* Variable: fspath *)
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let fspath = Rx.fspath
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(* Variable: uuid *)
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let uuid = /UUID=[0-9a-f-]+/
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(************************************************************************
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* Group: ENTRIES
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*************************************************************************)
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(************************************************************************
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* View: comma_sep_list
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* A comma separated list of options (opt=value or opt)
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*************************************************************************)
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let comma_sep_list (l:string) =
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let value = [ label "value" . Util.del_str "=" . store optval ] in
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let lns = [ label l . store word . value? ] in
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Build.opt_list lns comma
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(************************************************************************
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* View: record
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* A crypttab record
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*************************************************************************)
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let record = [ seq "entry" .
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[ label "target" . store target ] . sep_tab .
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[ label "device" . store (fspath|uuid) ] .
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(sep_tab . [ label "password" . store fspath ] .
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( sep_tab . comma_sep_list "opt")? )?
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. eol ]
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(*
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* View: lns
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* The crypttab lens
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*)
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let lns = ( empty | comment | record ) *
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(* Variable: filter *)
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let filter = (incl "/etc/crypttab")
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let xfm = transform lns filter
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(* coding: utf-8 *)
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