7855a9366b
Previously, in the absence of extensions of 'pipefs-service-type', we'd
get a wrong-type-arg exception while folding services:
In gnu/services/nfs.scm:
134:37 1 (_ #<<pipefs-configuration> mount-point: "/var/lib/nfs…> …)
In ice-9/boot-9.scm:
1685:16 0 (raise-exception _ #:continuable? _)
In procedure car: Wrong type argument in position 1 (expecting pair): ()
* gnu/services/nfs.scm (pipefs-service-type)[extend]: Gracefully handle
the case where VALUES is the empty list, as done in 'gss-service-type'.
453 lines
18 KiB
Scheme
453 lines
18 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2016 John Darrington <jmd@gnu.org>
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;;; Copyright © 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
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;;; Copyright © 2020, 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
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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 nfs)
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#:use-module (gnu)
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#:use-module (gnu services shepherd)
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#:use-module (gnu packages onc-rpc)
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#:use-module (gnu packages linux)
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#:use-module (gnu packages nfs)
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#:use-module (guix)
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#:use-module (guix records)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:use-module (gnu build file-systems)
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#:export (rpcbind-service-type
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rpcbind-configuration
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rpcbind-configuration?
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pipefs-service-type
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pipefs-configuration
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pipefs-configuration?
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idmap-service-type
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idmap-configuration
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idmap-configuration?
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gss-service-type
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gss-configuration
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gss-configuration?
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nfs-service-type
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nfs-configuration
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nfs-configuration?))
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(define default-pipefs-directory "/var/lib/nfs/rpc_pipefs")
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(define-record-type* <rpcbind-configuration>
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rpcbind-configuration make-rpcbind-configuration
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rpcbind-configuration?
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(rpcbind rpcbind-configuration-rpcbind
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(default rpcbind))
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(warm-start? rpcbind-configuration-warm-start?
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(default #t)))
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(define rpcbind-service-type
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(let ((proc
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(lambda (config)
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(define rpcbind
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(rpcbind-configuration-rpcbind config))
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(define rpcbind-command
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#~(list (string-append #$rpcbind "/sbin/rpcbind") "-f"
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#$@(if (rpcbind-configuration-warm-start? config) '("-w") '())))
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(shepherd-service
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(documentation "Start the RPC bind daemon.")
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(requirement '(networking))
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(provision '(rpcbind-daemon))
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(start #~(make-forkexec-constructor #$rpcbind-command))
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(stop #~(make-kill-destructor))))))
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(service-type
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(name 'rpcbind)
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list proc))))
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;; We use the extensions feature to allow other services to automatically
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;; configure and start this service. Only one value can be provided. We
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;; override it with the value returned by the extending service.
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(compose identity)
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(extend (lambda (config values)
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(match values
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((first . rest) first)
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(_ config))))
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(default-value (rpcbind-configuration))
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(description "Run the RPC Bind service, which provides a facility to map
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ONC RPC program numbers into universal addresses. Many NFS related services
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use this facility."))))
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(define-record-type* <pipefs-configuration>
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pipefs-configuration make-pipefs-configuration
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pipefs-configuration?
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(mount-point pipefs-configuration-mount-point
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(default default-pipefs-directory)))
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(define pipefs-service-type
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(let ((proc
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(lambda (config)
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(define pipefs-directory (pipefs-configuration-mount-point config))
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(shepherd-service
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(documentation "Mount the pipefs pseudo file system.")
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(provision '(rpc-pipefs))
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(start #~(lambda ()
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(mkdir-p #$pipefs-directory)
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(mount "rpc_pipefs" #$pipefs-directory "rpc_pipefs")
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(member #$pipefs-directory (mount-points))))
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(stop #~(lambda (pid . args)
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(umount #$pipefs-directory MNT_DETACH)
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(not (member #$pipefs-directory (mount-points)))))))))
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(service-type
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(name 'pipefs)
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list proc))))
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;; We use the extensions feature to allow other services to automatically
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;; configure and start this service. Only one value can be provided. We
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;; override it with the value returned by the extending service.
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(compose identity)
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(extend (lambda (config values)
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(match values
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((first . rest) first)
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(_ config))))
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(default-value (pipefs-configuration))
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(description "Mount the pipefs file system, which is used to transfer
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NFS-related data between the kernel and user-space programs."))))
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(define-record-type* <gss-configuration>
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gss-configuration make-gss-configuration
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gss-configuration?
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(pipefs-directory gss-configuration-pipefs-directory
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(default default-pipefs-directory))
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(nfs-utils gss-configuration-gss
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(default nfs-utils)))
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(define gss-service-type
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(let ((proc
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(lambda (config)
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(define nfs-utils
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(gss-configuration-gss config))
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(define pipefs-directory
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(gss-configuration-pipefs-directory config))
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(define gss-command
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#~(list (string-append #$nfs-utils "/sbin/rpc.gssd") "-f"
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"-p" #$pipefs-directory))
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(shepherd-service
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(documentation "Start the RPC GSS daemon.")
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(requirement '(rpcbind-daemon rpc-pipefs))
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(provision '(gss-daemon))
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(start #~(make-forkexec-constructor #$gss-command))
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(stop #~(make-kill-destructor))))))
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(service-type
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(name 'gss)
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list proc))))
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;; We use the extensions feature to allow other services to automatically
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;; configure and start this service. Only one value can be provided. We
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;; override it with the value returned by the extending service.
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(compose identity)
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(extend (lambda (config values)
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(match values
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((first . rest) first)
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(_ config))))
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(default-value (gss-configuration))
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(description "Run the @dfn{global security system} (GSS) daemon, which
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provides strong security for protocols based on remote procedure calls (ONC
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RPC)."))))
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(define-record-type* <idmap-configuration>
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idmap-configuration make-idmap-configuration
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idmap-configuration?
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(pipefs-directory idmap-configuration-pipefs-directory
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(default default-pipefs-directory))
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(domain idmap-configuration-domain
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(default #f))
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(nfs-utils idmap-configuration-nfs-utils
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(default nfs-utils))
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(verbosity idmap-configuration-verbosity
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(default 0)))
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(define idmap-service-type
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(let ((proc
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(lambda (config)
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(define nfs-utils
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(idmap-configuration-nfs-utils config))
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(define pipefs-directory
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(idmap-configuration-pipefs-directory config))
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(define domain (idmap-configuration-domain config))
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(define (idmap-config-file config)
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(plain-file "idmapd.conf"
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(string-append
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"\n[General]\n"
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"Verbosity = "
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(number->string
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(idmap-configuration-verbosity config))
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"\n"
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(if domain
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(format #f "Domain = ~a\n" domain)
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"")
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"\n[Mapping]\n"
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"Nobody-User = nobody\n"
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"Nobody-Group = nogroup\n")))
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(define idmap-command
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#~(list (string-append #$nfs-utils "/sbin/rpc.idmapd") "-f"
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"-p" #$pipefs-directory
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;; TODO: this is deprecated
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"-c" #$(idmap-config-file config)))
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(shepherd-service
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(documentation "Start the RPC IDMAP daemon.")
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(requirement '(rpcbind-daemon rpc-pipefs))
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(provision '(idmap-daemon))
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(start #~(make-forkexec-constructor #$idmap-command))
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(stop #~(make-kill-destructor))))))
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(service-type
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(name 'idmap)
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list proc))))
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;; We use the extensions feature to allow other services to automatically
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;; configure and start this service. Only one value can be provided. We
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;; override it with the value returned by the extending service.
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(compose identity)
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(extend (lambda (config values) (first values)))
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(default-value (idmap-configuration))
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(description "Run the idmap daemon, which provides a mapping between user
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IDs and user names. It is typically required to access file systems mounted
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via NFSv4."))))
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(define-record-type* <nfs-configuration>
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nfs-configuration make-nfs-configuration
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nfs-configuration?
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(nfs-utils nfs-configuration-nfs-utils
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(default nfs-utils))
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(nfs-versions nfs-configuration-nfs-versions
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(default '("4.2" "4.1" "4.0")))
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(exports nfs-configuration-exports
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(default '()))
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(rpcmountd-port nfs-configuration-rpcmountd-port
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(default #f))
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(rpcstatd-port nfs-configuration-rpcstatd-port
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(default #f))
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(rpcbind nfs-configuration-rpcbind
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(default rpcbind))
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(idmap-domain nfs-configuration-idmap-domain
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(default "localdomain"))
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(nfsd-port nfs-configuration-nfsd-port
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(default 2049))
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(nfsd-threads nfs-configuration-nfsd-threads
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(default 8))
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(nfsd-tcp? nfs-configuration-nfsd-tcp?
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(default #t))
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(nfsd-udp? nfs-configuration-nfsd-udp?
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(default #f))
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(pipefs-directory nfs-configuration-pipefs-directory
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(default default-pipefs-directory))
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;; List of modules to debug; any of nfsd, nfs, rpc, idmap, statd, or mountd.
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(debug nfs-configuration-debug
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(default '())))
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(define (nfs-shepherd-services config)
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"Return a list of <shepherd-service> for the NFS daemons with CONFIG."
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(match-record config <nfs-configuration>
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(nfs-utils nfs-versions exports
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rpcmountd-port rpcstatd-port nfsd-port nfsd-threads
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nfsd-tcp? nfsd-udp?
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pipefs-directory debug)
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(list (shepherd-service
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(documentation "Mount the nfsd pseudo file system.")
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(provision '(/proc/fs/nfsd))
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(start #~(lambda ()
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(mount "nfsd" "/proc/fs/nfsd" "nfsd")
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(member "/proc/fs/nfsd" (mount-points))))
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(stop #~(lambda (pid . args)
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(umount "/proc/fs/nfsd" MNT_DETACH)
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(not (member "/proc/fs/nfsd" (mount-points))))))
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(shepherd-service
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(documentation "Run the NFS statd daemon.")
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(provision '(rpc.statd))
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(requirement '(/proc/fs/nfsd rpcbind-daemon))
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(start
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#~(make-forkexec-constructor
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(list #$(file-append nfs-utils "/sbin/rpc.statd")
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;; TODO: notification support may require a little more
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;; configuration work.
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"--no-notify"
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#$@(if (member 'statd debug)
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'("--no-syslog") ; verbose logging to stderr
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'())
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"--foreground"
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#$@(if rpcstatd-port
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#~("--port" #$(number->string rpcstatd-port))
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'()))
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#:pid-file "/var/run/rpc.statd.pid"))
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(stop #~(make-kill-destructor)))
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(shepherd-service
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(documentation "Run the NFS mountd daemon.")
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(provision '(rpc.mountd))
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(requirement '(/proc/fs/nfsd rpc.statd))
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(start
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#~(make-forkexec-constructor
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(list #$(file-append nfs-utils "/sbin/rpc.mountd")
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"--foreground"
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#$@(if (member 'mountd debug)
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'("--debug" "all")
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'())
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#$@(if rpcmountd-port
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#~("--port" #$(number->string rpcmountd-port))
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'()))))
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(stop #~(make-kill-destructor)))
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(shepherd-service
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(documentation "Run the NFS daemon.")
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(provision '(rpc.nfsd))
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(requirement '(/proc/fs/nfsd rpc.statd networking))
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(start
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#~(lambda _
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(zero? (apply system* #$(file-append nfs-utils "/sbin/rpc.nfsd")
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(list
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#$@(if (member 'nfsd debug)
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'("--debug")
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'())
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"--port" #$(number->string nfsd-port)
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#$@(map (lambda (version)
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(string-append "--nfs-version=" version))
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nfs-versions)
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#$(number->string nfsd-threads)
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#$(if nfsd-tcp?
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"--tcp"
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"--no-tcp")
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#$(if nfsd-udp?
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"--udp"
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"--no-udp"))))))
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(stop
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#~(lambda _
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(zero?
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(system* #$(file-append nfs-utils "/sbin/rpc.nfsd") "0")))))
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(shepherd-service
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(documentation "Run the NFS mountd daemon and refresh exports.")
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(provision '(nfs))
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(requirement '(/proc/fs/nfsd rpc.nfsd rpc.mountd rpc.statd rpcbind-daemon))
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(start
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#~(lambda _
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(let ((rpcdebug #$(file-append nfs-utils "/sbin/rpcdebug")))
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(cond
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((member 'nfsd '#$debug)
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(system* rpcdebug "-m" "nfsd" "-s" "all"))
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((member 'nfs '#$debug)
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(system* rpcdebug "-m" "nfs" "-s" "all"))
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((member 'rpc '#$debug)
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(system* rpcdebug "-m" "rpc" "-s" "all"))))
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(zero? (system*
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#$(file-append nfs-utils "/sbin/exportfs")
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"-r" ; re-export
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"-a" ; everthing
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"-v" ; be verbose
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"-d" "all" ; debug
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))))
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(stop
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#~(lambda _
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(let ((rpcdebug #$(file-append nfs-utils "/sbin/rpcdebug")))
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(cond
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((member 'nfsd '#$debug)
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(system* rpcdebug "-m" "nfsd" "-c" "all"))
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((member 'nfs '#$debug)
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(system* rpcdebug "-m" "nfs" "-c" "all"))
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((member 'rpc '#$debug)
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(system* rpcdebug "-m" "rpc" "-c" "all"))))
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#t))
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(respawn? #f)))))
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(define %nfs-activation
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(with-imported-modules '((guix build utils))
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#~(begin
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(use-modules (guix build utils))
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;; directory containing monitor list
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(mkdir-p "/var/lib/nfs/sm")
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;; Needed for client recovery tracking
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(mkdir-p "/var/lib/nfs/v4recovery")
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(let ((user (getpw "nobody")))
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(chown "/var/lib/nfs"
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(passwd:uid user)
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(passwd:gid user))
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(chown "/var/lib/nfs/v4recovery"
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(passwd:uid user)
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(passwd:gid user)))
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#t)))
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(define nfs-service-type
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(service-type
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(name 'nfs)
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(extensions
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(list
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(service-extension shepherd-root-service-type nfs-shepherd-services)
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(service-extension activation-service-type (const %nfs-activation))
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(service-extension etc-service-type
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(lambda (config)
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`(("exports"
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,(plain-file "exports"
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(string-join
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(map string-join
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(nfs-configuration-exports config))
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"\n"))))))
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;; The NFS service depends on these other services. They are extended so
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;; that users don't need to configure them manually.
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(service-extension idmap-service-type
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(lambda (config)
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(idmap-configuration
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(domain (nfs-configuration-idmap-domain config))
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(verbosity
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(if (member 'idmap (nfs-configuration-debug config))
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10 0))
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(pipefs-directory (nfs-configuration-pipefs-directory config))
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(nfs-utils (nfs-configuration-nfs-utils config)))))
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(service-extension pipefs-service-type
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(lambda (config)
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(pipefs-configuration
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(mount-point (nfs-configuration-pipefs-directory config)))))
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(service-extension rpcbind-service-type
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(lambda (config)
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(rpcbind-configuration
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(rpcbind (nfs-configuration-rpcbind config)))))))
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(description
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"Run all NFS daemons and refresh the list of exported file systems.")))
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