diff options
Diffstat (limited to 'gnu/services/rsync.scm')
| -rw-r--r-- | gnu/services/rsync.scm | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/gnu/services/rsync.scm b/gnu/services/rsync.scm new file mode 100644 index 0000000000..621e6c46d4 --- /dev/null +++ b/gnu/services/rsync.scm @@ -0,0 +1,172 @@ +;;; 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)) + +;;;; Commentary: +;;; +;;; This module implements a service that to run instance of Rsync, +;;; files synchronization tool. +;;; +;;;; Code: + +(define-record-type* <rsync-configuration> + rsync-configuration + make-rsync-configuration + rsync-configuration? + (package rsync-configuration-package ; package + (default rsync)) + (port-number rsync-configuration-port-number ; integer + (default 873)) + (pid-file rsync-configuration-pid-file ; string + (default "/var/run/rsyncd/rsyncd.pid")) + (lock-file rsync-configuration-lock-file ; string + (default "/var/run/rsyncd/rsyncd.lock")) + (log-file rsync-configuration-log-file ; string + (default "/var/log/rsyncd.log")) + (use-chroot? rsync-configuration-use-chroot? ; boolean + (default #t)) + (share-path rsync-configuration-share-path ; string + (default "/srv/rsyncd")) + (share-comment rsync-configuration-share-comment ; string + (default "Rsync share")) + (read-only? rsync-configuration-read-only? ; boolean + (default #f)) + (timeout rsync-configuration-timeout ; integer + (default 300)) + (user rsync-configuration-user ; string + (default "root")) + (group rsync-configuration-group ; string + (default "root")) + (uid rsync-configuration-uid ; string + (default "rsyncd")) + (gid rsync-configuration-gid ; string + (default "rsyncd"))) + +(define (rsync-account config) + "Return the user accounts and user groups for CONFIG." + (let ((rsync-user (if (rsync-configuration-uid config) + (rsync-configuration-uid config) + (rsync-configuration-user config))) + (rsync-group (if (rsync-configuration-gid config) + (rsync-configuration-gid config) + (rsync-configuration-group config)))) + (list (user-group (name rsync-group) (system? #t)) + (user-account + (name rsync-user) + (system? #t) + (group rsync-group) + (comment "rsyncd privilege separation user") + (home-directory (string-append "/var/run/" + rsync-user)) + (shell #~(string-append #$shadow "/sbin/nologin")))))) + +(define (rsync-activation config) + "Return the activation GEXP for CONFIG." + (with-imported-modules '((guix build utils)) + #~(begin + (let ((share-directory #$(rsync-configuration-share-path config)) + (user (getpw (if #$(rsync-configuration-uid config) + #$(rsync-configuration-uid config) + #$(rsync-configuration-user config)))) + (group (getpw (if #$(rsync-configuration-gid config) + #$(rsync-configuration-gid config) + #$(rsync-configuration-group config))))) + (mkdir-p (dirname #$(rsync-configuration-pid-file config))) + (and=> share-directory mkdir-p) + (chown share-directory + (passwd:uid user) + (group:gid group)))))) + +(define rsync-config-file + ;; Return the rsync configuration file corresponding to CONFIG. + (match-lambda + (($ <rsync-configuration> package port-number pid-file lock-file log-file + use-chroot? share-path share-comment read-only? + timeout user group uid gid) + (if (not (string=? user "root")) + (cond + ((<= port-number 1024) + (error (string-append "rsync-service: to run on port " + (number->string port-number) + ", user must be root."))) + (use-chroot? + (error (string-append "rsync-service: to run in a chroot" + ", user must be root."))) + (uid + (error "rsync-service: to use uid, user must be root.")) + (gid + (error "rsync-service: to use gid, user must be root.")))) + (mixed-text-file + "rsync.conf" + "# Generated by 'rsync-service'.\n\n" + "pid file = " pid-file "\n" + "lock file = " lock-file "\n" + "log file = " log-file "\n" + "port = " (number->string port-number) "\n" + "use chroot = " (if use-chroot? "true" "false") "\n" + (if uid (string-append "uid = " uid "\n") "") + "gid = " (if gid gid "nogroup") "\n" ; no group nobody + "\n" + "[files]\n" + "path = " share-path "\n" + "comment = " share-comment "\n" + "read only = " (if read-only? "true" "false") "\n" + "timeout = " (number->string timeout) "\n")))) + +(define (rsync-shepherd-service config) + "Return a <shepherd-service> for rsync with CONFIG." + (let* ((rsync (rsync-configuration-package config)) + (pid-file (rsync-configuration-pid-file config)) + (port-number (rsync-configuration-port-number config)) + (user (rsync-configuration-user config)) + (group (rsync-configuration-group config))) + (list (shepherd-service + (provision '(rsync)) + (documentation "Run rsync daemon.") + (start #~(make-forkexec-constructor + (list (string-append #$rsync "/bin/rsync") + "--config" #$(rsync-config-file config) + "--daemon") + #:pid-file #$pid-file + #:user #$user + #:group #$group)) + (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 rsync-account) + (service-extension activation-service-type rsync-activation))) + (default-value (rsync-configuration)))) |