6fb6ac6857
Fixes: <https://bugs.gnu.org/32478>. * gnu/services/security-token.scm (pcscd-activation): Idempotently create the /var/lib/pcsc symlink so that it does not fail when it already exists.
93 lines
3.5 KiB
Scheme
93 lines
3.5 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.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 security-token)
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#:use-module (gnu services)
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#:use-module (gnu services shepherd)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages base)
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#:use-module (gnu packages security-token)
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#:use-module (gnu system shadow)
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#:use-module (guix gexp)
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#:use-module (guix modules)
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#:use-module (guix records)
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#:use-module (ice-9 match)
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#:use-module (srfi srfi-26)
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#:export (pcscd-configuration
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pcscd-configuration?
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pcscd-configuration-pcsc-lite
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pcscd-configuration-usb-drivers
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pcscd-service-type))
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;;;
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;;; PC/SC Smart Card Daemon
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;;;
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(define-record-type* <pcscd-configuration>
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pcscd-configuration make-pcscd-configuration pcscd-configuration?
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(pcsc-lite pcscd-configuration-pcsc-lite
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(default pcsc-lite))
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(usb-drivers pcscd-configuration-usb-drivers
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(default (list ccid))))
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(define pcscd-shepherd-service
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(match-lambda
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(($ <pcscd-configuration> pcsc-lite)
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(with-imported-modules (source-module-closure
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'((gnu build shepherd)))
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(shepherd-service
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(documentation "PC/SC Smart Card Daemon")
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(provision '(pcscd))
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(requirement '(syslogd))
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(modules '((gnu build shepherd)))
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(start #~(lambda _
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(invoke #$(file-append pcsc-lite "/sbin/pcscd"))
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(call-with-input-file "/var/run/pcscd/pcscd.pid" read)))
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(stop #~(make-kill-destructor)))))))
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(define pcscd-activation
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(match-lambda
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(($ <pcscd-configuration> pcsc-lite usb-drivers)
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(with-imported-modules (source-module-closure
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'((guix build utils)))
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#~(begin
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(use-modules (guix build utils))
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;; XXX: We can't use (guix utils) because it requires a
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;; dynamically-linked Guile, hence the duplicate switch-symlinks.
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(define (switch-symlinks link target)
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(let ((pivot (string-append link ".new")))
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(symlink target pivot)
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(rename-file pivot link)))
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(mkdir-p "/var/lib")
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(switch-symlinks "/var/lib/pcsc"
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#$(directory-union
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"pcsc"
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(map (cut file-append <> "/pcsc")
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usb-drivers))))))))
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(define pcscd-service-type
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(service-type
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(name 'pcscd)
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(description
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"Run @command{pcscd}, the PC/SC smart card daemon.")
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list pcscd-shepherd-service))
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(service-extension activation-service-type
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pcscd-activation)))
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(default-value (pcscd-configuration))))
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