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Resent-From: Bruno Victal Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Thu, 23 Mar 2023 15:05:04 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 62298 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: 62298@debbugs.gnu.org Cc: ludo@gnu.org, Bruno Victal , liliana.prikler@gmail.com, maxim.cournoyer@gmail.com Received: via spool by 62298-submit@debbugs.gnu.org id=B62298.16795838716524 (code B ref 62298); Thu, 23 Mar 2023 15:05:04 +0000 Received: (at 62298) by debbugs.gnu.org; 23 Mar 2023 15:04:31 +0000 Received: from localhost ([127.0.0.1]:39115 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pfMUQ-0001hA-Kv for submit@debbugs.gnu.org; Thu, 23 Mar 2023 11:04:31 -0400 Received: from smtpmciv2.myservices.hosting ([185.26.107.238]:49060) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pfMUK-0001gw-U4 for 62298@debbugs.gnu.org; Thu, 23 Mar 2023 11:04:25 -0400 Received: from mail1.netim.hosting (unknown [185.26.106.173]) by smtpmciv2.myservices.hosting (Postfix) with ESMTP id EE30520DA5; Thu, 23 Mar 2023 16:04:12 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mail1.netim.hosting (Postfix) with ESMTP id 4E0D2800AF; Thu, 23 Mar 2023 16:04:09 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at mail1.netim.hosting Received: from mail1.netim.hosting ([127.0.0.1]) by localhost (mail1-2.netim.hosting [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id ZKJkJgbuxp7q; Thu, 23 Mar 2023 16:04:08 +0100 (CET) Received: from guix-nuc.home.arpa (bl9-119-177.dsl.telepac.pt [85.242.119.177]) (Authenticated sender: lumen@makinata.eu) by mail1.netim.hosting (Postfix) with ESMTPSA id 703A5800AD; Thu, 23 Mar 2023 16:04:08 +0100 (CET) From: Bruno Victal Date: Thu, 23 Mar 2023 15:02:17 +0000 Message-Id: X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: X-Migadu-Queue-Id: AA8342D28 X-Spam-Score: 0.15 X-Migadu-Spam-Score: 0.15 X-Migadu-Scanner: scn0.migadu.com List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+larch=yhetil.org@gnu.org Sender: guix-patches-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-TUID: Oe2Z0v+IavBN Deprecate using strings for these fields and prefer user-account (resp. user-group) instead to avoid duplication within account-service-type. If a string value is encountered, it is ignored and a predefined variable is used instead. This is essentially a rollback to how it used to be before '5c5f0fc1135ff15f9c4adfc5f27eadd9a592b5d1'. Fixes #61570 . * gnu/services/audio.scm (mpd-serialize-user-account, mpd-serialize-user-group) (mpd-user-sanitizer, mpd-group-sanitizer): New procedure. (%mpd-user, %mpd-group): New variable. (mpd-configuration)[user, group]: Set value type to user-account (resp. user-group). (mpd-shepherd-service): Adapt for user-account values in user field. (mpd-accounts): Adapt for user-account (resp. user-group) in user (resp. group) field. * doc/guix.texi (Audio Services): Update documentation. --- doc/guix.texi | 4 +- gnu/services/audio.scm | 89 ++++++++++++++++++++++++++++++++++-------- 2 files changed, 74 insertions(+), 19 deletions(-) diff --git a/doc/guix.texi b/doc/guix.texi index af9f7d78c0..520a65b0b1 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -33491,10 +33491,10 @@ Audio Services @item @code{package} (default: @code{mpd}) (type: file-like) The MPD package. -@item @code{user} (default: @code{"mpd"}) (type: string) +@item @code{user} (type: maybe-user-account) The user to run mpd as. -@item @code{group} (default: @code{"mpd"}) (type: string) +@item @code{group} (type: maybe-user-group) The group to run mpd as. @item @code{shepherd-requirement} (default: @code{()}) (type: list-of-symbol) diff --git a/gnu/services/audio.scm b/gnu/services/audio.scm index 198157a83b..c168d1481c 100644 --- a/gnu/services/audio.scm +++ b/gnu/services/audio.scm @@ -140,6 +140,14 @@ (define (uglify-field-name field-name) (define list-of-symbol? (list-of symbol?)) +;; helpers for deprecated field types, to be removed later +(define %lazy-group (make-symbol "%lazy-group")) + +(define (inject-group-into-user user group) + (user-account + (inherit user) + (group (user-group-name group)))) + ;;; ;;; MPD @@ -164,9 +172,32 @@ (define mpd-serialize-boolean mpd-serialize-field) (define (mpd-serialize-list-of-strings field-name value) #~(string-append #$@(map (cut mpd-serialize-string field-name <>) value))) +(define (mpd-serialize-user-account field-name value) + (mpd-serialize-string field-name (user-account-name value))) + +(define (mpd-serialize-user-group field-name value) + (mpd-serialize-string field-name (user-group-name value))) + (define-maybe string (prefix mpd-)) (define-maybe list-of-strings (prefix mpd-)) (define-maybe boolean (prefix mpd-)) +(define-maybe user-account (prefix mpd-)) +(define-maybe user-group (prefix mpd-)) + +(define %mpd-user + (user-account + (name "mpd") + (group "mpd") + (system? #t) + (comment "Music Player Daemon (MPD) user") + ;; MPD can use $HOME (or $XDG_CONFIG_HOME) to place its data + (home-directory "/var/lib/mpd") + (shell (file-append shadow "/sbin/nologin")))) + +(define %mpd-group + (user-group + (name "mpd") + (system? #t))) ;;; TODO: Procedures for deprecated fields, to be removed. @@ -197,6 +228,33 @@ (define (mpd-serialize-port field-name value) (define-maybe port (prefix mpd-)) +;;; procedures for unsupported value types, to be removed. + +(define (mpd-user-sanitizer value) + (cond ((user-account? value) value) + ((string? value) + (warning (G_ "string value for 'user' is deprecated, use \ +user-account instead~%")) + (user-account + (inherit %mpd-user) + (name value) + ;; XXX: this is to be lazily substituted in (mpd-accounts) + ;; with the value from 'group'. + (group %lazy-group))) + (else + (configuration-field-error #f 'user value)))) + +(define (mpd-group-sanitizer value) + (cond ((user-group? value) value) + ((string? value) + (warning (G_ "string value for 'group' is deprecated, use \ +user-group instead~%")) + (user-group + (inherit %mpd-group) + (name value))) + (else + (configuration-field-error #f 'group value)))) + ;;; ;; Generic MPD plugin record, lists only the most prevalent fields. @@ -347,12 +405,14 @@ (define-configuration mpd-configuration empty-serializer) (user - (string "mpd") - "The user to run mpd as.") + (maybe-user-account %mpd-user) + "The user to run mpd as." + (sanitizer mpd-user-sanitizer)) (group - (string "mpd") - "The group to run mpd as.") + (maybe-user-group %mpd-group) + "The group to run mpd as." + (sanitizer mpd-group-sanitizer)) (shepherd-requirement (list-of-symbol '()) @@ -516,7 +576,8 @@ (define (mpd-shepherd-service config) log-file playlist-directory db-file state-file sticker-file environment-variables) - (let* ((config-file (mpd-serialize-configuration config))) + (let ((config-file (mpd-serialize-configuration config)) + (username (user-account-name user))) (shepherd-service (documentation "Run the MPD (Music Player Daemon)") (requirement `(user-processes loopback ,@shepherd-requirement)) @@ -525,7 +586,7 @@ (define (mpd-shepherd-service config) (and=> #$(maybe-value log-file) (compose mkdir-p dirname)) - (let ((user (getpw #$user))) + (let ((user (getpw #$username))) (for-each (lambda (x) (when (and x (not (file-exists? x))) @@ -559,17 +620,11 @@ (define (mpd-shepherd-service config) (define (mpd-accounts config) (match-record config (user group) - (list (user-group - (name group) - (system? #t)) - (user-account - (name user) - (group group) - (system? #t) - (comment "Music Player Daemon (MPD) user") - ;; MPD can use $HOME (or $XDG_CONFIG_HOME) to place its data - (home-directory "/var/lib/mpd") - (shell (file-append shadow "/sbin/nologin")))))) + ;; TODO: deprecation code, to be removed + (let ((user (if (eq? (user-account-group user) %lazy-group) + (inject-group-into-user user group) + user))) + (list user group)))) (define mpd-service-type (service-type -- 2.39.1