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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Oleg Pykhalov <go.wigust@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu services rsync)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:use-module (gnu packages rsync)
#:use-module (gnu packages admin)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (rsync-configuration
rsync-configuration?
rsync-service-type))
;;;
;;; Rsync.
;;;
(define-record-type* <rsync-configuration>
rsync-configuration make-rsync-configuration
rsync-configuration?
;; <package>
(package rsync-configuration-package
(default rsync))
;; integer
(port-number rsync-configuration-port-number
(default 873))
;; string
(pid-file rsync-configuration-pid-file
(default "/var/run/rsyncd.pid"))
;; string
(lock-file rsync-configuration-lock-file
(default "/var/run/rsyncd.lock"))
;; string
(log-file rsync-configuration-log-file
(default "/var/log/rsyncd.log"))
;; Boolean
(use-chroot? rsync-configuration-use-chroot?
(default #f))
;; string
(share-path rsync-configuration-share-path
(default "/srv/rsync"))
;; string
(share-comment rsync-configuration-share-comment
(default "Rsync share"))
;; Boolean
(read-only? rsync-configuration-read-only?
(default #f))
;; integer
(timeout rsync-configuration-timeout
(default 300)))
(define %rsync-accounts
;; User account and group for rsync.
(list (user-group (name "rsyncd") (system? #t))
(user-account
(name "rsyncd")
(system? #t)
(group "rsyncd")
(comment "rsyncd privilege separation user")
(home-directory "/var/run/rsyncd")
(shell #~(string-append #$shadow "/sbin/nologin")))))
(define (rsync-activation config)
"Return the activation GEXP for CONFIG."
#~(begin
(use-modules (guix build utils))
(let ((share-directory #$(rsync-configuration-share-path config))
(user (getpw "rsyncd")))
(and=> share-directory mkdir-p)
(chown share-directory
(passwd:uid user)
(group:gid user)))))
(define (rsync-config-file config)
"Return the rsync configuration file corresponding to CONFIG."
(computed-file
"rsync.conf"
#~(begin
(call-with-output-file #$output
(lambda (port)
(display "# Generated by 'rsync-service'.\n" port)
(format port "pid file = ~a\n"
#$(rsync-configuration-pid-file config))
(format port "lock file = ~a\n"
#$(rsync-configuration-lock-file config))
(format port "log file = ~a\n"
#$(rsync-configuration-log-file config))
(format port "port = ~a\n"
#$(number->string
(rsync-configuration-port-number config)))
(format port "use chroot = ~a\n"
#$(if (rsync-configuration-use-chroot? config)
"true" "false"))
(display "gid = rsyncd\n" port)
(display "[files]\n" port)
(format port "path = ~a\n"
#$(rsync-configuration-share-path config))
(format port "comment = ~a\n"
#$(rsync-configuration-share-comment config))
(format port "read only = ~a\n"
#$(if (rsync-configuration-read-only? config)
"true" "false"))
(format port "timeout = ~a\n"
#$(number->string
(rsync-configuration-timeout config)))
#t)))))
(define (rsync-shepherd-service config)
"Return a <shepherd-service> for rsync with CONFIG."
(define rsync-command
#~(list (string-append #$(rsync-configuration-package config) "/bin/rsync")
"--daemon" "--config" #$(rsync-config-file config)))
(define pid-file
(rsync-configuration-pid-file config))
(define user
(let ((port (rsync-configuration-port-number config)))
(if (> port 1024)
"rsyncd"
"root")))
(list (shepherd-service
(provision '(rsync))
(documentation "Run rsync daemon.")
(start #~(make-forkexec-constructor #$rsync-command
#:pid-file #$pid-file
#:user #$user
#:group #$user))
(stop #~(make-kill-destructor)))))
(define rsync-service-type
(service-type
(name 'rsync)
(extensions
(list (service-extension shepherd-root-service-type
rsync-shepherd-service)
(service-extension account-service-type
(const %rsync-accounts))
(service-extension activation-service-type
rsync-activation)))))
|