;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès ;;; Copyright © 2015 Mark H Weaver ;;; Copyright © 2015, 2016 Alex Kost ;;; Copyright © 2016 Chris Marusich ;;; Copyright © 2017 Mathieu Othacehe ;;; Copyright © 2019 Meiyo Peng ;;; Copyright © 2020 Danny Milosavljevic ;;; Copyright © 2020 Brice Waegeneire ;;; Copyright © 2020 Florian Pelz ;;; Copyright © 2020 Maxim Cournoyer ;;; ;;; 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 . (define-module (gnu system) #:use-module (guix inferior) #:use-module (guix store) #:use-module (guix monads) #:use-module (guix gexp) #:use-module (guix records) #:use-module (guix packages) #:use-module (guix derivations) #:use-module (guix profiles) #:use-module (guix ui) #:use-module (guix utils) #:use-module (gnu packages base) #:use-module (gnu packages bash) #:use-module (gnu packages guile) #:use-module (gnu packages guile-xyz) #:use-module (gnu packages admin) #:use-module (gnu packages linux) #:use-module (gnu packages pciutils) #:use-module (gnu packages package-management) #:use-module (gnu packages less) #:use-module (gnu packages zile) #:use-module (gnu packages nano) #:use-module (gnu packages gawk) #:use-module (gnu packages man) #:use-module (gnu packages texinfo) #:use-module (gnu packages compression) #:use-module (gnu packages firmware) #:use-module (gnu services) #:use-module (gnu services shepherd) #:use-module (gnu services base) #:use-module (gnu bootloader) #:use-module (gnu system shadow) #:use-module (gnu system nss) #:use-module (gnu system locale) #:use-module (gnu system pam) #:use-module (gnu system linux-initrd) #:use-module (gnu system uuid) #:use-module (gnu system file-systems) #:use-module (gnu system mapped-devices) #:use-module (ice-9 match) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) #:use-module (rnrs bytevectors) #:export (operating-system operating-system? this-operating-system operating-system-bootloader operating-system-services operating-system-essential-services operating-system-default-essential-services operating-system-user-services operating-system-packages operating-system-host-name operating-system-hosts-file operating-system-kernel operating-system-kernel-file operating-system-kernel-arguments operating-system-label operating-system-default-label operating-system-initrd-modules operating-system-initrd operating-system-users operating-system-groups operating-system-issue operating-system-timezone operating-system-locale operating-system-locale-definitions operating-system-locale-libcs operating-system-mapped-devices operating-system-file-systems operating-system-store-file-system operating-system-user-mapped-devices operating-system-boot-mapped-devices operating-system-activation-script operating-system-user-accounts operating-system-shepherd-service-names operating-system-user-kernel-arguments operating-system-firmware operating-system-keyboard-layout operating-system-name-service-switch operating-system-pam-services operating-system-setuid-programs operating-system-skeletons operating-system-sudoers-file operating-system-swap-devices operating-system-kernel-loadable-modules operating-system-derivation operating-system-profile operating-system-bootcfg operating-system-etc-directory operating-system-locale-directory operating-system-boot-script operating-system-uuid system-linux-image-file-name operating-system-with-gc-roots operating-system-with-provenance boot-parameters boot-parameters? boot-parameters-label boot-parameters-root-device boot-parameters-bootloader-name boot-parameters-bootloader-menu-entries boot-parameters-store-device boot-parameters-store-mount-point boot-parameters-kernel boot-parameters-kernel-arguments boot-parameters-initrd read-boot-parameters read-boot-parameters-file boot-parameters->menu-entry local-host-aliases %root-account %setuid-programs %sudoers-specification %base-packages %base-packages-interactive %base-packages-linux %base-packages-networking %base-packages-utils %base-firmware %default-kernel-arguments)) ;;; Commentary: ;;; ;;; This module supports whole-system configuration. ;;; ;;; Code: (define (bootable-kernel-arguments system root-device) "Return a list of kernel arguments (gexps) to boot SYSTEM from ROOT-DEVICE." (list (string-append "--root=" ;; Note: Always use the DCE format because that's what ;; (gnu build linux-boot) expects for the '--root' ;; kernel command-line option. (file-system-device->string root-device #:uuid-type 'dce)) #~(string-append "--system=" #$system) #~(string-append "--load=" #$system "/boot"))) ;; System-wide configuration. ;; TODO: Add per-field docstrings/stexi. (define-record-type* operating-system make-operating-system operating-system? this-operating-system (kernel operating-system-kernel ; package (default linux-libre)) (kernel-loadable-modules operating-system-kernel-loadable-modules (default '())) ; list of packages (kernel-arguments operating-system-user-kernel-arguments (default %default-kernel-arguments)) ; list of gexps/strings (bootloader operating-system-bootloader) ; (label operating-system-label ; string (thunked) (default (operating-system-default-label this-operating-system))) (keyboard-layout operating-system-keyboard-layout ;#f | (default #f)) (initrd operating-system-initrd ; (list fs) -> file-like (default base-initrd)) (initrd-modules operating-system-initrd-modules ; list of strings (thunked) ; it's system-dependent (default %base-initrd-modules)) (firmware operating-system-firmware ; list of packages (default %base-firmware)) (host-name operating-system-host-name) ; string (hosts-file operating-system-hosts-file ; file-like | #f (default #f)) (mapped-devices operating-system-mapped-devices ; list of (default '())) (file-systems operating-system-file-systems) ; list of fs (swap-devices operating-system-swap-devices ; list of strings (default '())) (users operating-system-users ; list of user accounts (default %base-user-accounts)) (groups operating-system-groups ; list of user groups (default %base-groups)) (skeletons operating-system-skeletons ; list of name/file-like value (default (default-skeletons))) (issue operating-system-issue ; string (default %default-issue)) (packages operating-system-packages ; list of (PACKAGE OUTPUT...) (default %base-packages)) ; or just PACKAGE (timezone operating-system-timezone) ; string (locale operating-system-locale ; string (default "en_US.utf8")) (locale-definitions operating-system-locale-definitions ; list of (default %default-locale-definitions)) (locale-libcs operating-system-locale-libcs ; list of (default %default-locale-libcs)) (name-service-switch operating-system-name-service-switch ; (default %default-nss)) (essential-services operating-system-essential-services ; list of services (thunked) (default (operating-system-default-essential-services this-operating-system))) (services operating-system-user-services ; list of services (default %base-services)) (pam-services operating-system-pam-services ; list of PAM services (default (base-pam-services))) (setuid-programs operating-system-setuid-programs (default %setuid-programs)) ; list of string-valued gexps (sudoers-file operating-system-sudoers-file ; file-like (default %sudoers-specification))) (define (operating-system-kernel-arguments os root-device) "Return all the kernel arguments, including the ones not specified directly by the user." (append (bootable-kernel-arguments os root-device) (operating-system-user-kernel-arguments os))) ;;; ;;; Boot parameters ;;; (define-record-type* boot-parameters make-boot-parameters boot-parameters? (label boot-parameters-label) ;; Because we will use the 'store-device' to create the GRUB search command, ;; the 'store-device' has slightly different semantics than 'root-device'. ;; The 'store-device' can be a file system uuid, a file system label, or #f, ;; but it cannot be a device path such as "/dev/sda3", since GRUB would not ;; understand that. The 'root-device', on the other hand, corresponds ;; exactly to the device field of the object representing the ;; OS's root file system, so it might be a device path like "/dev/sda3". (root-device boot-parameters-root-device) (bootloader-name boot-parameters-bootloader-name) (bootloader-menu-entries ;list of boot-parameters-bootloader-menu-entries) (store-device boot-parameters-store-device) (store-mount-point boot-parameters-store-mount-point) (kernel boot-parameters-kernel) (kernel-arguments boot-parameters-kernel-arguments) (initrd boot-parameters-initrd)) (define (ensure-not-/dev device) "If DEVICE starts with a slash, return #f. This is meant to filter out Linux device names such as /dev/sda, and to preserve GRUB device names and file system labels." (if (and (string? device) (string-prefix? "/" device)) #f device)) (define (read-boot-parameters port) "Read boot parameters from PORT and return the corresponding object or #f if the format is unrecognized." (define device-sexp->device (match-lambda (('uuid (? symbol? type) (? bytevector? bv)) (bytevector->uuid bv type)) (('file-system-label (? string? label)) (file-system-label label)) ((? bytevector? bv) ;old format (bytevector->uuid bv 'dce)) ((? string? device) ;; It used to be that we would not distinguish between labels and ;; device names. Try to infer the right thing here. (if (string-prefix? "/dev/" device) device (file-system-label device))))) (match (read port) (('boot-parameters ('version 0) ('label label) ('root-device root) ('kernel linux) rest ...) (boot-parameters (label label) (root-device (device-sexp->device root)) (bootloader-name (match (assq 'bootloader-name rest) ((_ args) args) (#f 'grub))) ; for compatibility reasons. (bootloader-menu-entries (match (assq 'bootloader-menu-entries rest) ((_ entries) (map sexp->menu-entry entries)) (#f '()))) ;; In the past, we would store the directory name of the kernel instead ;; of the absolute file name of its image. Detect that and correct it. (kernel (if (string=? linux (direct-store-path linux)) (string-append linux "/" (system-linux-image-file-name)) linux)) (kernel-arguments (match (assq 'kernel-arguments rest) ((_ args) args) (#f '()))) ;the old format (initrd (match (assq 'initrd rest) (('initrd ('string-append directory file)) ;the old format (string-append directory file)) (('initrd (? string? file)) file))) (store-device ;; Linux device names like "/dev/sda1" are not suitable GRUB device ;; identifiers, so we just filter them out. (ensure-not-/dev (match (assq 'store rest) (('store ('device #f) _ ...) root-device) (('store ('device device) _ ...) (device-sexp->device device)) (_ ;the old format root-device)))) (store-mount-point (match (assq 'store rest) (('store ('device _) ('mount-point mount-point) _ ...) mount-point) (_ ;the old format "/"))))) (x ;unsupported format (warning (G_ "unrecognized boot parameters at '~a'~%") (port-filename port)) #f))) (define (read-boot-parameters-file system) "Read boot parameters from SYSTEM's (system or generation) \"parameters\" file and returns the corresponding object or #f if the format is unrecognized. The object has its kernel-arguments extended in order to make it bootable." (let* ((file (string-append system "/parameters")) (params (call-with-input-file file read-boot-parameters)) (root (boot-parameters-root-device params))) (boot-parameters (inherit params) (kernel-arguments (append (bootable-kernel-arguments system root) (boot-parameters-kernel-arguments params)))))) (define (boot-parameters->menu-entry conf) (menu-entry (label (boot-parameters-label conf)) (device (boot-parameters-store-device conf)) (device-mount-point (boot-parameters-store-mount-point conf)) (linux (boot-parameters-kernel conf)) (linux-arguments (boot-parameters-kernel-arguments conf)) (initrd (boot-parameters-initrd conf)))) ;;; ;;; Services. ;;; (define (non-boot-file-system-service os) "Return the file system service for the file systems of OS that are not marked as 'needed-for-boot'." (define file-systems (remove file-system-needed-for-boot? (operating-system-file-systems os))) (define mapped-devices-for-boot (operating-system-boot-mapped-devices os)) (define (device-mappings fs) (let ((device (file-system-device fs))) (if (string? device) ;title is 'device (filter (lambda (md) (string=? (string-append "/dev/mapper/" (mapped-device-target md)) device)) (operating-system-mapped-devices os)) '()))) (define (add-dependencies fs) ;; Add the dependencies due to device mappings to FS. (file-system (inherit fs) (dependencies (delete-duplicates (remove (cut member <> mapped-devices-for-boot) (append (device-mappings fs) (file-system-dependencies fs))) eq?)))) (service file-system-service-type (map add-dependencies file-systems))) (define (mapped-device-users device file-systems) "Return the subset of FILE-SYSTEMS that use DEVICE." (let ((target (string-append "/dev/mapper/" (mapped-device-target device)))) (filter (lambda (fs) (or (member device (file-system-dependencies fs)) (and (string? (file-system-device fs)) (string=? (file-system-device fs) target)))) file-systems))) (define (operating-system-user-mapped-devices os) "Return the subset of mapped devices that can be installed in user-land--i.e., those not needed during boot." (let ((devices (operating-system-mapped-devices os)) (file-systems (operating-system-file-systems os))) (filter (lambda (md) (let ((users (mapped-device-users md file-systems))) (not (any file-system-needed-for-boot? users)))) devices))) (define (operating-system-boot-mapped-devices os) "Return the subset of mapped devices that must be installed during boot, from the initrd." (let ((devices (operating-system-mapped-devices os)) (file-systems (operating-system-file-systems os))) (filter (lambda (md) (let ((users (mapped-device-users md file-systems))) (any file-system-needed-for-boot? users))) devices))) (define (device-mapping-services os) "Return the list of device-mapping services for OS as a list." (map device-mapping-service (operating-system-user-mapped-devices os))) (define (swap-services os) "Return the list of swap services for OS." (map swap-service (operating-system-swap-devices os))) (define* (system-linux-image-file-name) "Return the basename of the kernel image file for SYSTEM." ;; FIXME: Evaluate the conditional based on the actual current system. (let ((target (or (%current-target-system) (%current-system)))) (cond ((string-prefix? "arm" target) "zImage") ((string-prefix? "mips" target) "vmlinuz") ((string-prefix? "aarch64" target) "Image") (else "bzImage")))) (define (operating-system-kernel-file os) "Return an object representing the absolute file name of the kernel image of OS." (file-append (operating-system-kernel os) "/" (system-linux-image-file-name))) (define (package-for-kernel target-kernel module-package) "Return a package like MODULE-PACKAGE, adapted for TARGET-KERNEL, if possible (that is if there's a LINUX keyword argument in the build system)." (package (inherit module-package) (arguments (substitute-keyword-arguments (package-arguments module-package) ((#:linux kernel #f) target-kernel))))) (define %default-modprobe-blacklist ;; List of kernel modules to blacklist by default. '("usbmouse" ;races with bcm5974, see "usbkbd")) ;races with usbhid, see (define %default-kernel-arguments ;; Default arguments passed to the kernel. (list (string-append "modprobe.blacklist=" (string-join %default-modprobe-blacklist ",")) "quiet")) (define* (operating-system-directory-base-entries os) "Return the basic entries of the 'system' directory of OS for use as the value of the SYSTEM-SERVICE-TYPE service." (let* ((locale (operating-system-locale-directory os)) (kernel (operating-system-kernel os)) (modules (operating-system-kernel-loadable-modules os)) (kernel (profile (content (packages->manifest (cons kernel (map (lambda (module) (if (package? module) (package-for-kernel kernel module) module)) modules)))) (hooks (list linux-module-database)))) (initrd (operating-system-initrd-file os)) (params (operating-system-boot-parameters-file os))) `(("kernel" ,kernel) ("parameters" ,params) ("initrd" ,initrd) ("locale" ,locale)))) ;used by libc (define (operating-system-default-essential-services os) "Return the list of essential services for OS. These are special services that implement part of what's declared in OS are responsible for low-level bookkeeping." (define known-fs (map file-system-mount-point (operating-system-file-systems os))) (let* ((mappings (device-mapping-services os)) (root-fs (root-file-system-service)) (other-fs (non-boot-file-system-service os)) (swaps (swap-services os)) (procs (service user-processes-service-type)) (host-name (host-name-service (operating-system-host-name os))) (entries (operating-system-directory-base-entries os))) (cons* (service system-service-type entries) %boot-service ;; %SHEPHERD-ROOT-SERVICE must come last so that the gexp that ;; execs shepherd comes last in the boot script (XXX). Likewise, ;; the cleanup service must come first so that its gexp runs before ;; activation code. (service cleanup-service-type #f) %activation-service %shepherd-root-service (pam-root-service (operating-system-pam-services os)) (account-service (append (operating-system-accounts os) (operating-system-groups os)) (operating-system-skeletons os)) (operating-system-etc-service os) (service fstab-service-type (filter file-system-needed-for-boot? (operating-system-file-systems os))) (session-environment-service (operating-system-environment-variables os)) host-name procs root-fs (service setuid-program-service-type (operating-system-setuid-programs os)) (service profile-service-type (operating-system-packages os)) other-fs (append mappings swaps ;; Add the firmware service. (list %linux-bare-metal-service (service firmware-service-type (operating-system-firmware os))))))) (define* (operating-system-services os) "Return all the services of OS, including \"essential\" services." (instantiate-missing-services (append (operating-system-user-services os) (operating-system-essential-services os)))) (define (operating-system-with-gc-roots os roots) "Return a variant of OS where ROOTS are registered as GC roots." (operating-system (inherit os) ;; We use this procedure for the installation OS, which already defines GC ;; roots. Add ROOTS to those. (services (cons (simple-service 'extra-root gc-root-service-type roots) (operating-system-user-services os))))) (define* (operating-system-with-provenance os #:optional config-file) "Return a variant of OS that stores its own provenance information, including CONFIG-FILE, if available. This is achieved by adding an instance of PROVENANCE-SERVICE-TYPE to its services." (operating-system (inherit os) (services (cons (service provenance-service-type config-file) (operating-system-user-services os))))) ;;; ;;; /etc. ;;; (define %base-firmware ;; Firmware usable by default. (list ath9k-htc-firmware openfwwf-firmware)) (define %base-packages-utils ;; Default set of utilities packages. (cons* procps psmisc which (@ (gnu packages admin) shadow) ;for 'passwd' guile-3.0 ;; The packages below are also in %FINAL-INPUTS, so take them from ;; there to avoid duplication. (list bash coreutils findutils grep sed diffutils patch gawk tar gzip bzip2 xz lzip))) (define %base-packages-linux ;; Default set of linux specific packages. (list pciutils usbutils util-linux+udev ;; Get 'insmod' & co. from kmod, not module-init-tools, since udev ;; already depends on it anyway. kmod eudev)) (define %base-packages-interactive ;; Default set of common interactive packages. (list less zile nano man-db info-reader ;the standalone Info reader (no Perl) bash-completion kbd ;; The 'sudo' command is already in %SETUID-PROGRAMS, but we also ;; want the other commands and the man pages (notably because ;; auto-completion in Emacs shell relies on man pages.) sudo guile-readline guile-colorized)) (define %base-packages-networking ;; Default set of networking packages. (list inetutils isc-dhcp iproute ;; wireless-tools is deprecated in favor of iw, but it's still what ;; many people are familiar with, so keep it around. iw wireless-tools)) (define %base-packages ;; Default set of packages globally visible. It should include anything ;; required for basic administrator tasks. (append (list e2fsprogs) %base-packages-interactive %base-packages-linux %base-packages-networking %base-packages-utils)) (define %default-issue ;; Default contents for /etc/issue. " This is the GNU system. Welcome.\n") (define (local-host-aliases host-name) "Return aliases for HOST-NAME, to be used in /etc/hosts." (string-append "127.0.0.1 localhost " host-name "\n" "::1 localhost " host-name "\n")) (define (default-/etc/hosts host-name) "Return the default /etc/hosts file." (plain-file "hosts" (local-host-aliases host-name))) (define* (operating-system-etc-service os) "Return a that builds containing the static part of the /etc directory." (let ((login.defs (plain-file "login.defs" (string-append "# Default paths for non-login shells started by su(1).\n" "ENV_PATH /run/setuid-programs:" "/run/current-system/profile/bin:" "/run/current-system/profile/sbin\n" "ENV_SUPATH /run/setuid-programs:" "/run/current-system/profile/bin:" "/run/current-system/profile/sbin\n"))) (issue (plain-file "issue" (operating-system-issue os))) (nsswitch (plain-file "nsswitch.conf" (name-service-switch->string (operating-system-name-service-switch os)))) ;; Startup file for POSIX-compliant login shells, which set system-wide ;; environment variables. (profile (mixed-text-file "profile" "\ # Crucial variables that could be missing in the profiles' 'etc/profile' # because they would require combining both profiles. # FIXME: See . export MANPATH=$HOME/.guix-profile/share/man:/run/current-system/profile/share/man export INFOPATH=$HOME/.guix-profile/share/info:/run/current-system/profile/share/info export XDG_DATA_DIRS=$HOME/.guix-profile/share:/run/current-system/profile/share export XDG_CONFIG_DIRS=$HOME/.guix-profile/etc/xdg:/run/current-system/profile/etc/xdg # Make sure libXcursor finds cursors installed into user or system profiles. See export XCURSOR_PATH=$HOME/.icons:$HOME/.guix-profile/share/icons:/run/current-system/profile/share/icons # Ignore the default value of 'PATH'. unset PATH # Load the system profile's settings. GUIX_PROFILE=/run/current-system/profile ; \\ . /run/current-system/profile/etc/profile # Since 'lshd' does not use pam_env, /etc/environment must be explicitly # loaded when someone logs in via SSH. See . # We need 'PATH' to be defined here, for 'cat' and 'cut'. Do this before # reading the user's 'etc/profile' to allow variables to be overridden. if [ -f /etc/environment -a -n \"$SSH_CLIENT\" \\ -a -z \"$LINUX_MODULE_DIRECTORY\" ] then . /etc/environment export `cat /etc/environment | cut -d= -f1` fi # Arrange so that ~/.config/guix/current comes first. for profile in \"$HOME/.guix-profile\" \"$HOME/.config/guix/current\" do if [ -f \"$profile/etc/profile\" ] then # Load the user profile's settings. GUIX_PROFILE=\"$profile\" ; \\ . \"$profile/etc/profile\" else # At least define this one so that basic things just work # when the user installs their first package. export PATH=\"$profile/bin:$PATH\" fi done # Prepend setuid programs. export PATH=/run/setuid-programs:$PATH # Arrange so that ~/.config/guix/current/share/info comes first. export INFOPATH=\"$HOME/.config/guix/current/share/info:$INFOPATH\" # Set the umask, notably for users logging in via 'lsh'. # See . umask 022 # Allow Hunspell-based applications (IceCat, LibreOffice, etc.) to # find dictionaries. export DICPATH=\"$HOME/.guix-profile/share/hunspell:/run/current-system/profile/share/hunspell\" # Allow GStreamer-based applications to find plugins. export GST_PLUGIN_PATH=\"$HOME/.guix-profile/lib/gstreamer-1.0\" if [ -n \"$BASH_VERSION\" -a -f /etc/bashrc ] then # Load Bash-specific initialization code. . /etc/bashrc fi ")) (bashrc (plain-file "bashrc" "\ # Bash-specific initialization. # The 'bash-completion' package. if [ -f /run/current-system/profile/etc/profile.d/bash_completion.sh ] then # Bash-completion sources ~/.bash_completion. It installs a dynamic # completion loader that searches its own completion files as well # as those in ~/.guix-profile and /run/current-system/profile. source /run/current-system/profile/etc/profile.d/bash_completion.sh fi\n"))) (etc-service `(("services" ,(file-append net-base "/etc/services")) ("protocols" ,(file-append net-base "/etc/protocols")) ("rpc" ,(file-append net-base "/etc/rpc")) ("login.defs" ,#~#$login.defs) ("issue" ,#~#$issue) ("nsswitch.conf" ,#~#$nsswitch) ("profile" ,#~#$profile) ("bashrc" ,#~#$bashrc) ("hosts" ,#~#$(or (operating-system-hosts-file os) (default-/etc/hosts (operating-system-host-name os)))) ;; Write the operating-system-host-name to /etc/hostname to prevent ;; NetworkManager from changing the system's hostname when connecting ;; to certain networks. Some discussion at ;; https://lists.gnu.org/archive/html/help-guix/2017-09/msg00037.html ("hostname" ,(plain-file "hostname" (operating-system-host-name os))) ;; Some programs (e.g., GLib) look at /etc/timezone to find the ;; name of the current timezone. For details, see ;; https://lists.gnu.org/archive/html/guix-devel/2019-07/msg00166.html ("timezone" ,(plain-file "timezone" (operating-system-timezone os))) ("localtime" ,(file-append tzdata "/share/zoneinfo/" (operating-system-timezone os))) ("sudoers" ,(operating-system-sudoers-file os)))))) (define %root-account ;; Default root account. (user-account (name "root") (password "") (uid 0) (group "root") (comment "System administrator") (home-directory "/root"))) (define (operating-system-accounts os) "Return the user accounts for OS, including an obligatory 'root' account, and excluding accounts requested by services." ;; Make sure there's a root account. (if (find (lambda (user) (and=> (user-account-uid user) zero?)) (operating-system-users os)) (operating-system-users os) (cons %root-account (operating-system-users os)))) (define (maybe-string->file file-name thing) "If THING is a string, return a with THING as its content. Otherwise just return THING. This is for backward-compatibility of fields that used to be strings and are now file-like objects.." (match thing ((? string?) (warning (G_ "using a string for file '~a' is deprecated; \ use 'plain-file' instead~%") file-name) (plain-file file-name thing)) (x x))) (define (maybe-file->monadic file-name thing) "If THING is a value in %STORE-MONAD, return it as is; otherwise return THING in the %STORE-MONAD. This is for backward-compatibility of fields that used to be monadic values and are now file-like objects." (with-monad %store-monad (match thing ((? procedure?) (warning (G_ "using a monadic value for '~a' is deprecated; \ use 'plain-file' instead~%") file-name) thing) (x (return x))))) (define (operating-system-etc-directory os) "Return that static part of the /etc directory of OS." (etc-directory (fold-services (operating-system-services os) #:target-type etc-service-type))) (define (operating-system-environment-variables os) "Return the environment variables of OS for @var{session-environment-service-type}, to be used in @file{/etc/environment}." `(("LANG" . ,(operating-system-locale os)) ;; Note: No need to set 'TZ' since (1) we provide /etc/localtime, and (2) ;; it doesn't work for setuid binaries. See . ("TZDIR" . ,(file-append tzdata "/share/zoneinfo")) ;; Tell 'modprobe' & co. where to look for modules. ("LINUX_MODULE_DIRECTORY" . "/run/booted-system/kernel/lib/modules") ;; These variables are honored by OpenSSL (libssl) and Git. ("SSL_CERT_DIR" . "/etc/ssl/certs") ("SSL_CERT_FILE" . "/etc/ssl/certs/ca-certificates.crt") ("GIT_SSL_CAINFO" . "/etc/ssl/certs/ca-certificates.crt") ;; 'GTK_DATA_PREFIX' must name one directory where GTK+ themes are ;; searched for. ("GTK_DATA_PREFIX" . "/run/current-system/profile") ;; By default, applications that use D-Bus, such as Emacs, abort at startup ;; when /etc/machine-id is missing. Make sure these warnings are non-fatal. ("DBUS_FATAL_WARNINGS" . "0") ;; XXX: Normally we wouldn't need to do this, but our glibc@2.23 package ;; used to look things up in 'PREFIX/lib/locale' instead of ;; '/run/current-system/locale' as was intended. Keep this hack around so ;; that people who still have glibc@2.23-using packages in their profiles ;; can use them correctly. ;; TODO: Remove when glibc@2.23 is long gone. ("GUIX_LOCPATH" . "/run/current-system/locale"))) (define %setuid-programs ;; Default set of setuid-root programs. (let ((shadow (@ (gnu packages admin) shadow))) (list (file-append shadow "/bin/passwd") (file-append shadow "/bin/su") (file-append shadow "/bin/newuidmap") (file-append shadow "/bin/newgidmap") (file-append inetutils "/bin/ping") (file-append inetutils "/bin/ping6") (file-append sudo "/bin/sudo") (file-append sudo "/bin/sudoedit") (file-append fuse "/bin/fusermount") ;; To allow mounts with the "user" option, "mount" and "umount" must ;; be setuid-root. (file-append util-linux "/bin/mount") (file-append util-linux "/bin/umount")))) (define %sudoers-specification ;; Default /etc/sudoers contents: 'root' and all members of the 'wheel' ;; group can do anything. See ;; . ;; TODO: Add a declarative API. (plain-file "sudoers" "\ root ALL=(ALL) ALL %wheel ALL=(ALL) ALL\n")) (define* (operating-system-activation-script os) "Return the activation script for OS---i.e., the code that \"activates\" the stateful part of OS, including user accounts and groups, special directories, etc." (let* ((services (operating-system-services os)) (activation (fold-services services #:target-type activation-service-type))) (activation-service->script activation))) (define* (operating-system-boot-script os) "Return the boot script for OS---i.e., the code started by the initrd once we're running in the final root." (let* ((services (operating-system-services os)) (boot (fold-services services #:target-type boot-service-type))) (service-value boot))) (define (operating-system-user-accounts os) "Return the list of user accounts of OS." (let* ((services (operating-system-services os)) (account (fold-services services #:target-type account-service-type))) (filter user-account? (service-value account)))) (define (operating-system-shepherd-service-names os) "Return the list of Shepherd service names for OS." (append-map shepherd-service-provision (service-value (fold-services (operating-system-services os) #:target-type shepherd-root-service-type)))) (define* (operating-system-derivation os) "Return a derivation that builds OS." (let* ((services (operating-system-services os)) (system (fold-services services))) ;; SYSTEM contains the derivation as a monadic value. (service-value system))) (define* (operating-system-profile os) "Return a derivation that builds the system profile of OS." (mlet* %store-monad ((services -> (operating-system-services os)) (profile (fold-services services #:target-type profile-service-type))) (match profile (("profile" profile) (return profile))))) (define (operating-system-root-file-system os) "Return the root file system of OS." (find (lambda (fs) (string=? "/" (file-system-mount-point fs))) (operating-system-file-systems os))) (define (operating-system-initrd-file os) "Return a gexp denoting the initrd file of OS." (define boot-file-systems (filter file-system-needed-for-boot? (operating-system-file-systems os))) (define mapped-devices (operating-system-boot-mapped-devices os)) (define make-initrd (operating-system-initrd os)) (make-initrd boot-file-systems #:linux (operating-system-kernel os) #:linux-modules (operating-system-initrd-modules os) #:mapped-devices mapped-devices #:keyboard-layout (operating-system-keyboard-layout os))) (define* (operating-system-uuid os #:optional (type 'dce)) "Compute UUID object with a deterministic \"UUID\" for OS, of the given TYPE (one of 'iso9660 or 'dce). Return a UUID object." ;; Note: For this to be deterministic, we must not hash things that contains ;; (directly or indirectly) procedures, for example. That rules out ;; anything that contains gexps, thunk or delayed record fields, etc. (define service-name (compose service-type-name service-kind)) (define (file-system-digest fs) ;; Return a hashable digest that does not contain 'dependencies' since ;; this field can contain procedures. (let ((device (file-system-device fs))) (list (file-system-mount-point fs) (file-system-type fs) (file-system-device->string device) (file-system-options fs)))) (if (eq? type 'iso9660) (let ((pad (compose (cut string-pad <> 2 #\0) number->string)) (h (hash (map service-name (operating-system-services os)) 3600))) (bytevector->uuid (string->iso9660-uuid (string-append "1970-01-01-" (pad (hash (operating-system-host-name os) 24)) "-" (pad (quotient h 60)) "-" (pad (modulo h 60)) "-" (pad (hash (map file-system-digest (operating-system-file-systems os)) 100)))) 'iso9660)) (bytevector->uuid (uint-list->bytevector (list (hash (map file-system-digest (operating-system-file-systems os)) (- (expt 2 32) 1)) (hash (operating-system-host-name os) (- (expt 2 32) 1)) (hash (map service-name (operating-system-services os)) (- (expt 2 32) 1)) (hash (map file-system-digest (operating-system-file-systems os)) (- (expt 2 32) 1))) (endianness little) 4) type))) (define (locale-name->definition* name) "Variant of 'locale-name->definition' that raises an error upon failure." (match (locale-name->definition name) (#f (raise (condition (&message (message (format #f (G_ "~a: invalid locale name") name)))))) (def def))) (define (operating-system-locale-directory os) "Return the directory containing the locales compiled for the definitions listed in OS. The C library expects to find it under /run/current-system/locale." (define name (operating-system-locale os)) (define definitions ;; While we're at it, check whether NAME is defined and add it if needed. (if (member name (map locale-definition-name (operating-system-locale-definitions os))) (operating-system-locale-definitions os) (cons (locale-name->definition* name) (operating-system-locale-definitions os)))) (locale-directory definitions #:libcs (operating-system-locale-libcs os))) (define (kernel->boot-label kernel) "Return a label for the bootloader menu entry that boots KERNEL." (cond ((package? kernel) (string-append "GNU with " (string-titlecase (package-name kernel)) " " (package-version kernel))) ((inferior-package? kernel) (string-append "GNU with " (string-titlecase (inferior-package-name kernel)) " " (inferior-package-version kernel))) (else "GNU"))) (define (operating-system-default-label os) "Return the default label for OS, as it will appear in the bootloader menu entry." (kernel->boot-label (operating-system-kernel os))) (define (store-file-system file-systems) "Return the file system object among FILE-SYSTEMS that contains the store." (match (filter (lambda (fs) (and (file-system-mount? fs) (not (memq 'bind-mount (file-system-flags fs))) (string-prefix? (file-system-mount-point fs) (%store-prefix)))) file-systems) ((and candidates (head . tail)) (reduce (lambda (fs1 fs2) (if (> (string-length (file-system-mount-point fs1)) (string-length (file-system-mount-point fs2))) fs1 fs2)) head candidates)))) (define (operating-system-store-file-system os) "Return the file system that contains the store of OS." (store-file-system (operating-system-file-systems os))) (define* (operating-system-bootcfg os #:optional (old-entries '())) "Return the bootloader configuration file for OS. Use OLD-ENTRIES, a list of , to populate the \"old entries\" menu." (let* ((file-systems (operating-system-file-systems os)) (root-fs (operating-system-root-file-system os)) (root-device (file-system-device root-fs)) (params (operating-system-boot-parameters os root-device #:system-kernel-arguments? #t)) (entry (boot-parameters->menu-entry params)) (bootloader-conf (operating-system-bootloader os))) (define generate-config-file (bootloader-configuration-file-generator (bootloader-configuration-bootloader bootloader-conf))) (generate-config-file bootloader-conf (list entry) #:old-entries old-entries #:store-directory-prefix (btrfs-store-subvolume-file-name file-systems)))) (define* (operating-system-boot-parameters os root-device #:key system-kernel-arguments?) "Return a monadic record that describes the boot parameters of OS. When SYSTEM-KERNEL-ARGUMENTS? is true, add kernel arguments such as '--root' and '--load' to ." (let* ((initrd (operating-system-initrd-file os)) (store (operating-system-store-file-system os)) (bootloader (bootloader-configuration-bootloader (operating-system-bootloader os))) (bootloader-name (bootloader-name bootloader)) (label (operating-system-label os))) (boot-parameters (label label) (root-device root-device) (kernel (operating-system-kernel-file os)) (kernel-arguments (if system-kernel-arguments? (operating-system-kernel-arguments os root-device) (operating-system-user-kernel-arguments os))) (initrd initrd) (bootloader-name bootloader-name) (bootloader-menu-entries (bootloader-configuration-menu-entries (operating-system-bootloader os))) (store-device (ensure-not-/dev (file-system-device store))) (store-mount-point (file-system-mount-point store))))) (define (device->sexp device) "Serialize DEVICE as an sexp (really, as an object with a read syntax.)" (match device ((? uuid? uuid) `(uuid ,(uuid-type uuid) ,(uuid-bytevector uuid))) ((? file-system-label? label) `(file-system-label ,(file-system-label->string label))) (_ device))) (define* (operating-system-boot-parameters-file os #:key system-kernel-arguments?) "Return a file that describes the boot parameters of OS. The primary use of this file is the reconstruction of GRUB menu entries for old configurations. When SYSTEM-KERNEL-ARGUMENTS? is true, add kernel arguments such as '--root' and '--load' to the returned file (since the returned file is then usually stored into the content-addressed \"system\" directory, it's usually not a good idea to give it because the content hash would change by the content hash being stored into the \"parameters\" file)." (let* ((root (operating-system-root-file-system os)) (device (file-system-device root)) (params (operating-system-boot-parameters os device #:system-kernel-arguments? system-kernel-arguments?))) (scheme-file "parameters" #~(boot-parameters (version 0) (label #$(boot-parameters-label params)) (root-device #$(device->sexp (boot-parameters-root-device params))) (kernel #$(boot-parameters-kernel params)) (kernel-arguments #$(boot-parameters-kernel-arguments params)) (initrd #$(boot-parameters-initrd params)) (bootloader-name #$(boot-parameters-bootloader-name params)) (bootloader-menu-entries #$(map menu-entry->sexp (or (and=> (operating-system-bootloader os) bootloader-configuration-menu-entries) '()))) (store (device #$(device->sexp (boot-parameters-store-device params))) (mount-point #$(boot-parameters-store-mount-point params)))) #:set-load-path? #f))) (define-gexp-compiler (operating-system-compiler (os ) system target) ((store-lift (lambda (store) ;; XXX: This is not super elegant but we can't pass SYSTEM and TARGET to ;; 'operating-system-derivation'. (run-with-store store (operating-system-derivation os) #:system system #:target target))))) ;;; system.scm ends here