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