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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 John Darrington <jmd@gnu.org>
;;; Copyright © 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; 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 nfs)
#:use-module (gnu)
#:use-module (gnu services shepherd)
#:use-module (gnu packages onc-rpc)
#:use-module (gnu packages linux)
#:use-module (guix)
#:use-module (guix records)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:use-module (gnu build file-systems)
#:export (rpcbind-service-type
rpcbind-configuration
rpcbind-configuration?
pipefs-service-type
pipefs-configuration
pipefs-configuration?
idmap-service-type
idmap-configuration
idmap-configuration?
gss-service-type
gss-configuration
gss-configuration?))
(define default-pipefs-directory "/var/lib/nfs/rpc_pipefs")
(define-record-type* <rpcbind-configuration>
rpcbind-configuration make-rpcbind-configuration
rpcbind-configuration?
(rpcbind rpcbind-configuration-rpcbind
(default rpcbind))
(warm-start? rpcbind-configuration-warm-start?
(default #t)))
(define rpcbind-service-type
(let ((proc
(lambda (config)
(define rpcbind
(rpcbind-configuration-rpcbind config))
(define rpcbind-command
#~(list (string-append #$rpcbind "/bin/rpcbind") "-f"
#$@(if (rpcbind-configuration-warm-start? config) '("-w") '())))
(shepherd-service
(documentation "Start the RPC bind daemon.")
(requirement '(networking))
(provision '(rpcbind-daemon))
(start #~(make-forkexec-constructor #$rpcbind-command))
(stop #~(make-kill-destructor))))))
(service-type
(name 'rpcbind)
(extensions
(list (service-extension shepherd-root-service-type
(compose list proc))))
;; We use the extensions feature to allow other services to automatically
;; configure and start this service. Only one value can be provided. We
;; override it with the value returned by the extending service.
(compose identity)
(extend (lambda (config values)
(match values
((first . rest) first)
(_ config))))
(default-value (rpcbind-configuration)))))
(define-record-type* <pipefs-configuration>
pipefs-configuration make-pipefs-configuration
pipefs-configuration?
(mount-point pipefs-configuration-mount-point
(default default-pipefs-directory)))
(define pipefs-service-type
(let ((proc
(lambda (config)
(define pipefs-directory (pipefs-configuration-mount-point config))
(shepherd-service
(documentation "Mount the pipefs pseudo file system.")
(provision '(rpc-pipefs))
(start #~(lambda ()
(mkdir-p #$pipefs-directory)
(mount "rpc_pipefs" #$pipefs-directory "rpc_pipefs")
(member #$pipefs-directory (mount-points))))
(stop #~(lambda (pid . args)
(umount #$pipefs-directory MNT_DETACH)
(not (member #$pipefs-directory (mount-points)))))))))
(service-type
(name 'pipefs)
(extensions
(list (service-extension shepherd-root-service-type
(compose list proc))))
;; We use the extensions feature to allow other services to automatically
;; configure and start this service. Only one value can be provided. We
;; override it with the value returned by the extending service.
(compose identity)
(extend (lambda (config values) (first values)))
(default-value (pipefs-configuration)))))
(define-record-type* <gss-configuration>
gss-configuration make-gss-configuration
gss-configuration?
(pipefs-directory gss-configuration-pipefs-directory
(default default-pipefs-directory))
(nfs-utils gss-configuration-gss
(default nfs-utils)))
(define gss-service-type
(shepherd-service-type
'gss
(lambda (config)
(define nfs-utils
(gss-configuration-gss config))
(define pipefs-directory
(gss-configuration-pipefs-directory config))
(define gss-command
#~(list (string-append #$nfs-utils "/sbin/rpc.gssd") "-f"
"-p" #$pipefs-directory))
(shepherd-service
(documentation "Start the RPC GSS daemon.")
(requirement '(rpcbind-daemon rpc-pipefs))
(provision '(gss-daemon))
(start #~(make-forkexec-constructor #$gss-command))
(stop #~(make-kill-destructor))))))
(define-record-type* <idmap-configuration>
idmap-configuration make-idmap-configuration
idmap-configuration?
(pipefs-directory idmap-configuration-pipefs-directory
(default default-pipefs-directory))
(domain idmap-configuration-domain
(default #f))
(nfs-utils idmap-configuration-nfs-utils
(default nfs-utils)))
(define idmap-service-type
(shepherd-service-type
'idmap
(lambda (config)
(define nfs-utils
(idmap-configuration-nfs-utils config))
(define pipefs-directory
(idmap-configuration-pipefs-directory config))
(define domain (idmap-configuration-domain config))
(define (idmap-config-file config)
(plain-file "idmapd.conf"
(string-append
"\n[General]\n"
(if domain
(format #f "Domain = ~a\n" domain))
"\n[Mapping]\n"
"Nobody-User = nobody\n"
"Nobody-Group = nogroup\n")))
(define idmap-command
#~(list (string-append #$nfs-utils "/sbin/rpc.idmapd") "-f"
"-p" #$pipefs-directory
"-c" #$(idmap-config-file config)))
(shepherd-service
(documentation "Start the RPC IDMAP daemon.")
(requirement '(rpcbind-daemon rpc-pipefs))
(provision '(idmap-daemon))
(start #~(make-forkexec-constructor #$idmap-command))
(stop #~(make-kill-destructor))))))
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