* gnu/services/avahi.scm (configuration-file): Use 'plain-file' instead of 'text-file'. (avahi-service): Turn into a regular procedure that returns a <service>. * gnu/services/base.scm (root-file-system-service, file-system-service, user-unmount-service, user-processes-service, host-name-service, console-keymap-service, console-font-service, mingetty-service, nscd.conf-file, nscd-service): Likewise. (%default-syslog.conf): New variable. (syslog-service): Use it. Turn into a regular procedure. (guix-service, udev-rules-union, kvm-udev-rule, udev-service, device-mapping-service, swap-service): Likewise. * gnu/services/databases.scm (%default-postgres-hba, %default-postgres-ident): Use 'plain-file' instead of 'text-file'. (%default-postgres-config): Use 'mixed-text-file' instead of 'text-file*'. (postgresql-service): Use 'program-file' instead of 'gexp->script'. Turn into a regular procedure. * gnu/services/desktop.scm (dbus-configuration-directory): Use 'computed-file' instead of 'gexp->derivation'. (upower-configuration-file, geoclue-configuration-file, elogind-configuration-file): Use 'plain-file' instead of 'text-file'. (dbus-service, upower-service, colord-service, geoclue-service, polkit-service, elogind-service): Turn into regular procedures. (%desktop-services): Remove use of 'mlet' when iterating on %BASE-SERVICES. * gnu/services/lirc.scm (lirc-service): Turn into a regular procedure. * gnu/services/networking.scm (static-networking-service, dhcp-client-service, ntp-service, tor-service, bitlbee-service, wicd-service): Likewise. * gnu/services/ssh.scm (lsh-service): Likewise. * gnu/services/web.scm (nginx-service): Likewise. * gnu/services/xorg.scm (xorg-configuration-file): Use 'mixed-text-file' instead of 'text-file*'. (xorg-start-command, slim-service): Turn into regular procedures. (xinitrc): Use 'program-file' instead of 'gexp->script'. * gnu/system/install.scm (cow-store-service, configuration-template-service): Turn into regular procedures. * gnu/system.scm (other-file-system-services, device-mapping-services, swap-services, essential-services, operating-system-services, user-shells, operating-system-accounts): Remove now unnecessary 'mlet' and turn into regular procedures. (operating-system-etc-directory, operating-system-activation-script, operating-system-boot-script): Adjust accordingly. * doc/guix.texi (Base Services, Networking Services, X Window, Desktop Services, Database Services, Web Services, Various Services, Name Service Switch): Adjust accordingly.
116 lines
4.3 KiB
Scheme
116 lines
4.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 David Thompson <davet@gnu.org>
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;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org>
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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 databases)
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#:use-module (gnu services)
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#:use-module (gnu system shadow)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages databases)
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#:use-module (guix records)
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#:use-module (guix store)
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#:use-module (guix gexp)
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#:export (postgresql-service))
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;;; Commentary:
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;;;
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;;; Database services.
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;;;
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;;; Code:
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(define %default-postgres-hba
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(plain-file "pg_hba.conf"
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"
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local all all trust
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host all all 127.0.0.1/32 trust
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host all all ::1/128 trust"))
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(define %default-postgres-ident
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(plain-file "pg_ident.conf"
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"# MAPNAME SYSTEM-USERNAME PG-USERNAME"))
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(define %default-postgres-config
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(mixed-text-file "postgresql.conf"
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"hba_file = '" %default-postgres-hba "'\n"
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"ident_file = '" %default-postgres-ident "\n"))
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(define* (postgresql-service #:key (postgresql postgresql)
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(config-file %default-postgres-config)
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(data-directory "/var/lib/postgresql/data"))
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"Return a service that runs @var{postgresql}, the PostgreSQL database server.
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The PostgreSQL daemon loads its runtime configuration from @var{config-file}
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and stores the database cluster in @var{data-directory}."
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;; Wrapper script that switches to the 'postgres' user before launching
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;; daemon.
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(define start-script
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(program-file "start-postgres"
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#~(let ((user (getpwnam "postgres"))
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(postgres (string-append #$postgresql
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"/bin/postgres")))
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(setgid (passwd:gid user))
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(setuid (passwd:uid user))
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(system* postgres
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(string-append "--config-file=" #$config-file)
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"-D" #$data-directory))))
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(define activate
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#~(begin
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(use-modules (guix build utils)
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(ice-9 match))
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(let ((user (getpwnam "postgres"))
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(initdb (string-append #$postgresql "/bin/initdb")))
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;; Create db state directory.
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(mkdir-p #$data-directory)
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(chown #$data-directory (passwd:uid user) (passwd:gid user))
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;; Drop privileges and init state directory in a new
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;; process. Wait for it to finish before proceeding.
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(match (primitive-fork)
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(0
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;; Exit with a non-zero status code if an exception is thrown.
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(dynamic-wind
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(const #t)
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(lambda ()
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(setgid (passwd:gid user))
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(setuid (passwd:uid user))
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(primitive-exit (system* initdb "-D" #$data-directory)))
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(lambda ()
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(primitive-exit 1))))
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(pid (waitpid pid))))))
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(service
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(provision '(postgres))
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(documentation "Run the PostgreSQL daemon.")
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(requirement '(user-processes loopback))
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(start #~(make-forkexec-constructor #$start-script))
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(stop #~(make-kill-destructor))
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(activate activate)
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(user-groups (list (user-group
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(name "postgres")
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(system? #t))))
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(user-accounts (list (user-account
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(name "postgres")
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(group "postgres")
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(system? #t)
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(comment "PostgreSQL server user")
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(home-directory "/var/empty")
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(shell
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#~(string-append #$shadow "/sbin/nologin")))))))
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