112 lines
4.4 KiB
Scheme
112 lines
4.4 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services pam-mount)
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#:use-module (gnu packages admin)
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#:use-module (gnu services)
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#:use-module (gnu services configuration)
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#:use-module (gnu system pam)
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#:use-module (guix gexp)
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#:use-module (guix records)
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#:export (pam-mount-configuration
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pam-mount-configuration?
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pam-mount-service-type))
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(define %pam-mount-default-configuration
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`((debug (@ (enable "0")))
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(mntoptions (@ (allow ,(string-join
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'("nosuid" "nodev" "loop"
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"encryption" "fsck" "nonempty"
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"allow_root" "allow_other")
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","))))
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(mntoptions (@ (require "nosuid,nodev")))
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(logout (@ (wait "0")
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(hup "0")
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(term "no")
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(kill "no")))
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(mkmountpoint (@ (enable "1")
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(remove "true")))))
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(define (make-pam-mount-configuration-file config)
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(computed-file
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"pam_mount.conf.xml"
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#~(begin
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(use-modules (sxml simple))
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(call-with-output-file #$output
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(lambda (port)
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(sxml->xml
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'(*TOP*
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(*PI* xml "version='1.0' encoding='utf-8'")
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(pam_mount
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#$@(pam-mount-configuration-rules config)
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(pmvarrun
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#$(file-append pam-mount
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"/sbin/pmvarrun -u '%(USER)' -o '%(OPERATION)'"))
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(cryptmount
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#$(file-append pam-mount
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(string-append
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"/sbin/mount.crypt"
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" '%(if %(CIPHER),-ocipher=%(CIPHER))'"
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" '%(if %(FSKEYCIPHER),"
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"-ofsk_cipher=%(FSKEYCIPHER))'"
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" '%(if %(FSKEYHASH),-ofsk_hash=%(FSKEYHASH))'"
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" '%(if %(FSKEYPATH),-okeyfile=%(FSKEYPATH))'"
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" '%(if %(OPTIONS),-o%(OPTIONS))'"
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" '%(VOLUME)' '%(MNTPT)'")))
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(cryptumount
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#$(file-append pam-mount "/sbin/umount.crypt '%(MNTPT)'"))))
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port))))))
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(define-record-type* <pam-mount-configuration>
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pam-mount-configuration
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make-pam-mount-configuration
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pam-mount-configuration?
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(rules pam-mount-configuration-rules
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(default %pam-mount-default-configuration)))
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(define (pam-mount-etc-service config)
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`(("security/pam_mount.conf.xml"
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,(make-pam-mount-configuration-file config))))
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(define (pam-mount-pam-service config)
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(define optional-pam-mount
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(pam-entry
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(control "optional")
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(module #~(string-append #$pam-mount "/lib/security/pam_mount.so"))))
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(list (lambda (pam)
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(if (member (pam-service-name pam)
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'("login" "su" "slim" "gdm-password"))
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(pam-service
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(inherit pam)
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(auth (append (pam-service-auth pam)
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(list optional-pam-mount)))
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(session (append (pam-service-session pam)
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(list optional-pam-mount))))
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pam))))
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(define pam-mount-service-type
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(service-type
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(name 'pam-mount)
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(extensions (list (service-extension etc-service-type
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pam-mount-etc-service)
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(service-extension pam-root-service-type
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pam-mount-pam-service)))
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(default-value (pam-mount-configuration))
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(description "Activate PAM-Mount support. It allows mounting volumes for
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specific users when they log in.")))
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