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authorLudovic Courtès <ludo@gnu.org>2015-09-17 23:44:26 +0200
committerLudovic Courtès <ludo@gnu.org>2015-10-10 22:55:15 +0200
commit0adfe95a3eee335847c3127edde3de550e692440 (patch)
tree1c5a059d8f261f09254c0e420e61e1344c9edb45 /gnu/system
parente79467f63a06811ba5dd8c8b0cc79553c5dd4e3a (diff)
downloadguix-0adfe95a3eee335847c3127edde3de550e692440.tar
guix-0adfe95a3eee335847c3127edde3de550e692440.tar.gz
services: Introduce extensible services.
This patch rewrites GuixSD services to make them extensible. * gnu-system.am (GNU_SYSTEM_MODULES): Add gnu/services/dbus.scm. * gnu/services.scm (<service>): Replace with new record type. (<service-extension>, <service-type>): New record types. (write-service-type, compute-boot-script, second-argument): New procedures. (%boot-service, boot-service-type): New variables. (file-union, directory-union, modprobe-wrapper, activation-service->script, activation-script, gexps->activation-gexp): New procedures. (activation-service-type, %activation-service): New variables. (etc-directory, files->etc-directory, etc-service): New procedures. (etc-service-type, setuid-program-service, firmware-service-type): New variables. (firmware->activation-gexp): New procedure. (&service-error, &missing-target-service-error, &ambiguous-target-service-error): New condition types. (service-back-edges, fold-services): New procedures. * gnu/services/avahi.scm (<avahi-configuration>): New record type. (configuration-file): Replace keyword parameters with a single 'config' parameter. (%avahi-accounts, %avahi-activation, avahi-service-type): New variables. (avahi-dmd-service): New procedure. (avahi-service): Rewrite using 'service' and 'avahi-configuration'. * gnu/services/base.scm (%root-file-system-dmd-service, root-file-system-service-type): New variables. (root-file-system-service): Use them. (file-system->dmd-service-name): New procedure. (file-system-service-type): New variable. (file-system-service): Use it. Replace keyword parameters with a single 'file-system' object. (user-unmount-service-type): New variable. (user-unmount-service): Use it. (user-processes-service-type): New variable. (user-processes-service): Use it. (host-name-service-type): New variable. (host-name-service): Use it. (console-keymap-service-type): New variable. (console-keymap-service): Use it. (console-font-service-type): New variable. (console-font-service): Use it. (mingetty-pam-service, mingetty-dmd-service): New procedures. (mingetty-service-type): New variable. (mingetty-service): Use it. (nscd-dmd-service): New procedure. (nscd-activation, nscd-service-type): New variables. (nscd-service): Use the latter. (syslog-service-type): New variable. (syslog-service): Use it. (<guix-configuration>): New record type. (%default-guix-configuration): New variable. (guix-dmd-service, guix-accounts, guix-activation): New procedures. (guix-service-type): New variable. (guix-service): Replace list of keyword parameters with a single 'config' parameter. Rewrite using 'service'. (<udev-configuration>): New record type. (udev-dmd-service): New procedure. (udev-service-type): New variable. (udev-service): Use it. (device-mapping-service-type): New variable. (device-mapping-service): Use it. (swap-service-type): New variable. (swap-service): Use it. * gnu/services/databases.scm (<postgresql-configuration>): New record type. (%postgresql-accounts, postgresql-activation): New variables. (postgresql-dmd-service): New procedure. (postgresql-service): Rewrite using 'service' and 'postgresql-configuration'. * gnu/services/dbus.scm: New file. * gnu/services/desktop.scm (dbus-configuration-directory, dbus-service): Remove. (wrapped-dbus-service): New procedure. (<upower-configuration>): New record type. (upower-configuration-file): Replace keyword parameters with single <upower-configuration> parameter. (%upower-accounts, %upower-activation): New variables. (upower-dbus-service, upower-dmd-service): New procedures. (upower-service-type): New variable. (upower-service): Rewrite using 'service' and 'upower-configuration'. (%colord-activation, %colord-accounts): New variables. (colord-dmd-service): New procedure. (colord-service-type): New variable. (colord-service): Rewrite using 'service'. (<geoclue-configuration>): New record type. (geoclue-configuration-file): Replace keyword parameters with a single 'config' parameter. (geoclue-dbus-service, geoclue-dmd-service): New procedures. (%geoclue-accounts, geoclue-service-type): New variables. (geoclue-service): Rewrite using 'service' and 'geoclue-configuration'. (%polkit-accounts, %polkit-pam-services, polkit-service-type): New variables. (polkit-dmd-service): New procedure. (polkit-service): Rewrite using 'service'. (<elogind-configuration>)[elogind]: New field. (elogind-dmd-service): New procedure. (elogind-service-type): New variable. (elogind-service): Rewrite using 'service'. (%desktop-services): Remove argument to 'dbus-service'. Remove 'map' over %BASE-SERVICES. * gnu/services/dmd.scm (dmd-boot-gexp): New procedure. (dmd-root-service-type, %dmd-root-service): New variables. (dmd-service-type): New macro. (<dmd-service>): New record type. * gnu/services/lirc.scm (<lirc-configuration>): New record type. (%lirc-activation): New variable. (lirc-dmd-service): New procedure. (lirc-service-type): New variable. (lirc-service): Rewrite using 'service' and 'lirc-configuration'. * gnu/services/networking.scm (<static-networking>): New record type. (static-networking-service-type): New variable. (static-networking-service): Rewrite using 'service' and 'static-networking'. (dhcp-client-service-type): New variable. (dhcp-client-service): Rewrite using 'service'. (<ntp-configuration>): New record type. (ntp-dmd-service): New procedure. (ntp-service-type): New variable. (ntp-service): New procedure. (%tor-accounts, tor-service-type): New variable. (tor-dmd-service): New procedure. (tor-service): Rewrite using 'service'. (<bitlbee-configuration>): New record type. (bitlbee-dmd-service): New procedure. (%bitlbee-accounts, %bitlbee-activation, bitlbee-service-type): New variables. (bitlbee-service): Rewrite using 'service'. (%wicd-activation): New variable. (wicd-dmd-service): New procedure. (wicd-service-type): New variable. (wicd-service): Rewrite using 'service'. * gnu/services/ssh.scm (<lsh-configuration>): New record type. (activation): Rename to... (lsh-initialization): ... this. (lsh-activation, lsh-dmd-service, lsh-pam-services): New procedures. (lsh-service-type): New variable. (lsh-service): Rewrite using 'service' and 'lsh-configuration'. * gnu/services/web.scm (<nginx-configuration>): New record type. (%nginx-accounts): New variable. (nginx-activation, nginx-dmd-service): New procedures. (nginx-service-type): New variable. (nginx-service): Rewrite using 'service' and 'nginx-configuration'. * gnu/services/xorg.scm (<slim-configuration>): New record type. (slim-pam-service, slim-dmd-service): New procedures. (slim-service-type): New variable. (slim-service): Rewrite using 'service' and 'slim-configuration'. * gnu/system.scm (file-union): Remove. (other-file-system-services): Adjust to new 'file-system-service' signature. (essential-services): Add #:container? parameter. Add %DMD-ROOT-SERVICE, %ACTIVATION-SERVICE, and calls to 'pam-root-service', 'account-service', 'operating-system-etc-service', and a SETUID-PROGRAM-SERVICE instance. (operating-system-services): Pass #:container? to 'essential-services. (etc-directory): Remove. (operating-system-etc-service): New procedure. Rewrite as a call to 'etc-service'. (operating-system-accounts): Change to not return accounts required by services. (operating-system-etc-directory): Rewrite as a call to 'fold-services' and 'etc-directory'. (user-group->gexp, user-account->gexp, modprobe-wrapper): Remove. (operating-system-activation-script): Rewrite as a call to 'fold-services' and 'activation-service->script'. (operating-system-boot-script): Likewise. (operating-system-derivation): Add call to 'lower-object'. (emacs-site-file, emacs-site-directory, shells-file): Change to use 'computed-file' and 'scheme-file' instead of the monadic procedures. * gnu/system/install.scm (cow-store-service-type): New variable. (cow-store-service): Rewrite using 'service'. (/etc/configuration-files): New procedure. (configuration-template-service-type, %configuration-template-service): New variables. (configuration-template-service): Remove. (installation-services): Adjust accordingly. Adjust argument to 'guix-service'. * gnu/system/linux.scm (/etc-entry, pam-root-service): New procedures. (pam-root-service-type): New variable. * gnu/system/shadow.scm (user-group->gexp, user-account->gexp, account-activation, etc-skel, account-service): New procedures. (account-service-type): New variable. * tests/services.scm: New file. * doc/guix.texi (Base Services, Desktop Services): Adjust accordingly. (Defining Services): Rewrite. * doc/images/service-graph.dot: New file. * doc.am (DOT_FILES): Add it. * po/guix/POTFILES.in: Add gnu/services.scm.
Diffstat (limited to 'gnu/system')
-rw-r--r--gnu/system/install.scm125
-rw-r--r--gnu/system/linux.scm30
-rw-r--r--gnu/system/shadow.scm96
3 files changed, 182 insertions, 69 deletions
diff --git a/gnu/system/install.scm b/gnu/system/install.scm
index 560d64b5d4..a91c5c3533 100644
--- a/gnu/system/install.scm
+++ b/gnu/system/install.scm
@@ -24,6 +24,7 @@
#:use-module (guix monads)
#:use-module ((guix store) #:select (%store-prefix))
#:use-module (guix profiles)
+ #:use-module (gnu services dmd)
#:use-module (gnu packages admin)
#:use-module (gnu packages bash)
#:use-module (gnu packages linux)
@@ -159,68 +160,74 @@ current store is on a RAM disk."
(mount "/.rw-store" #$(%store-prefix) "" MS_MOVE)
(rmdir "/.rw-store"))))))
+(define cow-store-service-type
+ (dmd-service-type
+ (lambda _
+ (dmd-service
+ (requirement '(root-file-system user-processes))
+ (provision '(cow-store))
+ (documentation
+ "Make the store copy-on-write, with writes going to \
+the given target.")
+
+ ;; This is meant to be explicitly started by the user.
+ (auto-start? #f)
+
+ (start #~(case-lambda
+ ((target)
+ #$(make-cow-store #~target)
+ target)
+ (else
+ ;; Do nothing, and mark the service as stopped.
+ #f)))
+ (stop #~(lambda (target)
+ ;; Delete the temporary directory, but leave everything
+ ;; mounted as there may still be processes using it since
+ ;; 'user-processes' doesn't depend on us. The 'user-unmount'
+ ;; service will unmount TARGET eventually.
+ (delete-file-recursively
+ (string-append target #$%backing-directory))))))))
+
(define (cow-store-service)
"Return a service that makes the store copy-on-write, such that writes go to
the user's target storage device rather than on the RAM disk."
;; See <http://bugs.gnu.org/18061> for the initial report.
- (service
- (requirement '(root-file-system user-processes))
- (provision '(cow-store))
- (documentation
- "Make the store copy-on-write, with writes going to \
-the given target.")
-
- ;; This is meant to be explicitly started by the user.
- (auto-start? #f)
-
- (start #~(case-lambda
- ((target)
- #$(make-cow-store #~target)
- target)
- (else
- ;; Do nothing, and mark the service as stopped.
- #f)))
- (stop #~(lambda (target)
- ;; Delete the temporary directory, but leave everything
- ;; mounted as there may still be processes using it
- ;; since 'user-processes' doesn't depend on us. The
- ;; 'user-unmount' service will unmount TARGET
- ;; eventually.
- (delete-file-recursively
- (string-append target #$%backing-directory))))))
-
-(define (configuration-template-service)
- "Return a dummy service whose purpose is to install an operating system
-configuration template file in the installation system."
-
- (define search
- (cut search-path %load-path <>))
- (define templates
- (map (match-lambda
- ((file '-> target)
- (list (local-file (search file))
- (string-append "/etc/configuration/" target))))
- '(("gnu/system/examples/bare-bones.tmpl" -> "bare-bones.scm")
- ("gnu/system/examples/desktop.tmpl" -> "desktop.scm"))))
-
- (service
- (requirement '(root-file-system))
- (provision '(os-config-template))
- (documentation
- "This dummy service installs an OS configuration template.")
- (start #~(const #t))
- (stop #~(const #f))
- (activate
- #~(begin
- (use-modules (ice-9 match)
- (guix build utils))
+ (service cow-store-service-type 'mooooh!))
+
+
+(define (/etc/configuration-files _)
+ "Return a list of tuples representing configuration templates to add to
+/etc."
+ (define (file f)
+ (local-file (search-path %load-path
+ (string-append "gnu/system/examples/" f))))
+
+ (define directory
+ (computed-file "configuration-templates"
+ #~(begin
+ (mkdir #$output)
+ (for-each (lambda (file target)
+ (copy-file file
+ (string-append #$output "/"
+ target)))
+ '(#$(file "bare-bones.tmpl")
+ #$(file "desktop.tmpl"))
+ '("bare-bones.scm"
+ "desktop.scm"))
+ #t)
+ #:modules '((guix build utils))))
+
+ `(("configuration" ,directory)))
+
+(define configuration-template-service-type
+ (service-type (name 'configuration-template)
+ (extensions
+ (list (service-extension etc-service-type
+ /etc/configuration-files)))))
+
+(define %configuration-template-service
+ (service configuration-template-service-type #t))
- (mkdir-p "/etc/configuration")
- (for-each (match-lambda
- ((file target)
- (unless (file-exists? target)
- (copy-file file target))))
- '#$templates)))))
(define %nscd-minimal-caches
;; Minimal in-memory caching policy for nscd.
@@ -262,7 +269,7 @@ You have been warned. Thanks for being so brave.
(login-program (log-to-info))))
;; Documentation add-on.
- (configuration-template-service)
+ %configuration-template-service
;; A bunch of 'root' ttys.
(normal-tty "tty3")
@@ -276,7 +283,7 @@ You have been warned. Thanks for being so brave.
;; The build daemon. Register the hydra.gnu.org key as trusted.
;; This allows the installation process to use substitutes by
;; default.
- (guix-service #:authorize-hydra-key? #t)
+ (guix-service (guix-configuration (authorize-key? #t)))
;; Start udev so that useful device nodes are available.
;; Use device-mapper rules for cryptsetup & co; enable the CRDA for
diff --git a/gnu/system/linux.scm b/gnu/system/linux.scm
index 10e72e905a..cd14bc97be 100644
--- a/gnu/system/linux.scm
+++ b/gnu/system/linux.scm
@@ -20,6 +20,7 @@
#:use-module (guix records)
#:use-module (guix derivations)
#:use-module (guix gexp)
+ #:use-module (gnu services)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
@@ -28,7 +29,10 @@
pam-entry
pam-services->directory
unix-pam-service
- base-pam-services))
+ base-pam-services
+
+ pam-root-service-type
+ pam-root-service))
;;; Commentary:
;;;
@@ -98,8 +102,8 @@ dumped in /etc/pam.d/NAME, where NAME is the name of SERVICE."
(mkdir #$output)
(for-each (match-lambda
- ((name file)
- (symlink file (string-append #$output "/" name))))
+ ((name file)
+ (symlink file (string-append #$output "/" name))))
;; Since <pam-service> objects cannot be compared with
;; 'equal?' since they contain gexps, which contain
@@ -188,4 +192,24 @@ authenticate to run COMMAND."
'("useradd" "userdel" "usermod"
"groupadd" "groupdel" "groupmod"))))
+
+;;;
+;;; PAM root service.
+;;;
+
+(define (/etc-entry services)
+ `(("pam.d" ,(pam-services->directory services))))
+
+(define pam-root-service-type
+ (service-type (name 'pam)
+ (extensions (list (service-extension etc-service-type
+ /etc-entry)))
+ (compose concatenate)
+ (extend append)))
+
+(define (pam-root-service base)
+ "The \"root\" PAM service, which collects <pam-service> instance and turns
+them into a /etc/pam.d directory, including the <pam-service> listed in BASE."
+ (service pam-root-service-type base))
+
;;; linux.scm ends here
diff --git a/gnu/system/shadow.scm b/gnu/system/shadow.scm
index ddd5f66874..3f49c1fc9f 100644
--- a/gnu/system/shadow.scm
+++ b/gnu/system/shadow.scm
@@ -22,12 +22,14 @@
#:use-module (guix store)
#:use-module (guix sets)
#:use-module (guix ui)
+ #:use-module (gnu services)
#:use-module ((gnu system file-systems)
#:select (%tty-gid))
#:use-module ((gnu packages admin)
#:select (shadow))
#:use-module (gnu packages bash)
#:use-module (gnu packages guile-wm)
+ #:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
@@ -54,7 +56,9 @@
skeleton-directory
%base-groups
%base-user-accounts
- assert-valid-users/groups))
+
+ account-service-type
+ account-service))
;;; Commentary:
;;;
@@ -87,31 +91,32 @@
(system? user-group-system? ; Boolean
(default #f)))
+
(define %base-groups
;; Default set of groups.
(let-syntax ((system-group (syntax-rules ()
((_ args ...)
(user-group (system? #t) args ...)))))
(list (system-group (name "root") (id 0))
- (system-group (name "wheel")) ; root-like users
- (system-group (name "users")) ; normal users
- (system-group (name "nogroup")) ; for daemons etc.
+ (system-group (name "wheel")) ; root-like users
+ (system-group (name "users")) ; normal users
+ (system-group (name "nogroup")) ; for daemons etc.
;; The following groups are conventionally used by things like udev to
;; control access to hardware devices.
(system-group (name "tty") (id %tty-gid))
(system-group (name "dialout"))
(system-group (name "kmem"))
- (system-group (name "input")) ; input devices, from udev
+ (system-group (name "input")) ; input devices, from udev
(system-group (name "video"))
(system-group (name "audio"))
- (system-group (name "netdev")) ; used in avahi-dbus.conf
+ (system-group (name "netdev")) ; used in avahi-dbus.conf
(system-group (name "lp"))
(system-group (name "disk"))
(system-group (name "floppy"))
(system-group (name "cdrom"))
(system-group (name "tape"))
- (system-group (name "kvm"))))) ; for /dev/kvm
+ (system-group (name "kvm"))))) ; for /dev/kvm
(define %base-user-accounts
;; List of standard user accounts. Note that "root" is a special case, so
@@ -224,4 +229,81 @@ of user '~a' is undeclared")
(user-account-supplementary-groups user)))
users)))
+
+;;;
+;;; Service.
+;;;
+
+(define (user-group->gexp group)
+ "Turn GROUP, a <user-group> object, into a list-valued gexp suitable for
+'active-groups'."
+ #~(list #$(user-group-name group)
+ #$(user-group-password group)
+ #$(user-group-id group)
+ #$(user-group-system? group)))
+
+(define (user-account->gexp account)
+ "Turn ACCOUNT, a <user-account> object, into a list-valued gexp suitable for
+'activate-users'."
+ #~`(#$(user-account-name account)
+ #$(user-account-uid account)
+ #$(user-account-group account)
+ #$(user-account-supplementary-groups account)
+ #$(user-account-comment account)
+ #$(user-account-home-directory account)
+ ,#$(user-account-shell account) ; this one is a gexp
+ #$(user-account-password account)
+ #$(user-account-system? account)))
+
+(define (account-activation accounts+groups)
+ "Return a gexp that activates ACCOUNTS+GROUPS, a list of <user-account> and
+<user-group> objects. Raise an error if a user account refers to a undefined
+group."
+ (define accounts
+ (filter user-account? accounts+groups))
+
+ (define user-specs
+ (map user-account->gexp accounts))
+
+ (define groups
+ (filter user-group? accounts+groups))
+
+ (define group-specs
+ (map user-group->gexp groups))
+
+ (assert-valid-users/groups accounts groups)
+
+ ;; Add users and user groups.
+ #~(begin
+ (setenv "PATH"
+ (string-append #$(@ (gnu packages admin) shadow) "/sbin"))
+ (activate-users+groups (list #$@user-specs)
+ (list #$@group-specs))))
+
+(define (etc-skel arguments)
+ "Filter out among ARGUMENTS things corresponding to skeletons, and return
+the /etc/skel directory for those."
+ (let ((skels (filter pair? arguments)))
+ `(("skel" ,(skeleton-directory skels)))))
+
+(define account-service-type
+ (service-type (name 'account)
+
+ ;; Concatenate <user-account>, <user-group>, and skeleton
+ ;; lists.
+ (compose concatenate)
+ (extend append)
+
+ (extensions
+ (list (service-extension activation-service-type
+ account-activation)
+ (service-extension etc-service-type
+ etc-skel)))))
+
+(define (account-service accounts+groups skeletons)
+ "Return a <service> that takes care of user accounts and user groups, with
+ACCOUNTS+GROUPS as its initial list of accounts and groups."
+ (service account-service-type
+ (append skeletons accounts+groups)))
+
;;; shadow.scm ends here