mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-07 07:26:13 -05:00
afacfa33ec
This brings the on disk size of the kernel from 164 MiB to 144 MiB, or about
12%.
* gnu/packages/linux.scm (default-extra-linux-options)
[version>=5.13]: Enable CONFIG_MODULE_COMPRESS_ZSTD, else
CONFIG_MODULE_COMPRESS_GZIP.
(make-linux-libre*) [phases] {set-environment}: Set ZSTD_CLEVEL environment
variable to 19.
[native-inputs]: Add zstd.
* gnu/build/linux-modules.scm (module-regex): Add .zst to regexp. Update doc.
(modinfo-section-contents): Extend support to Zstd compressed module.
(dot-ko): Register the 'zstd compression type.
(ensure-dot-ko, file-name->module-name, load-linux-module*)
(module-name->file-name/guess, write-module-name-database)
(write-module-alias-database, write-module-device-database): Update doc.
(module-name-lookup): Also consider zstd-compressed modules.
* gnu/installer.scm (installer-program): Add guile-zstd extension to gexp.
* gnu/system/linux-initrd.scm (flat-linux-module-directory): Likewise.
Decompress zstd-compressed modules for use in initrd.
* guix/profiles.scm (linux-module-database): Add guile-zstd extension to gexp.
Change-Id: Ide899dc5c58ea5033583b1a91a92c025fc8d901a
441 lines
18 KiB
Scheme
441 lines
18 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2013-2020, 2024 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2016 Mark H Weaver <mhw@netris.org>
|
||
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
|
||
;;; Copyright © 2017, 2019 Mathieu Othacehe <m.othacehe@gmail.com>
|
||
;;; Copyright © 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
|
||
;;;
|
||
;;; 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 <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu system linux-initrd)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix utils)
|
||
#:use-module ((guix store)
|
||
#:select (%store-prefix))
|
||
#:use-module ((guix derivations)
|
||
#:select (derivation->output-path))
|
||
#:use-module (guix modules)
|
||
#:use-module (gnu packages compression)
|
||
#:use-module (gnu packages disk)
|
||
#:use-module (gnu packages linux)
|
||
#:use-module (gnu packages file-systems)
|
||
#:use-module (gnu packages guile)
|
||
#:use-module ((gnu packages xorg)
|
||
#:select (console-setup xkeyboard-config))
|
||
#:use-module ((gnu packages make-bootstrap)
|
||
#:select (%guile-static-initrd))
|
||
#:use-module (gnu system file-systems)
|
||
#:use-module (gnu system mapped-devices)
|
||
#:use-module (gnu system keyboard)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 regex)
|
||
#:use-module (ice-9 vlist)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-26)
|
||
#:export (expression->initrd
|
||
%base-initrd-modules
|
||
raw-initrd
|
||
file-system-packages
|
||
base-initrd))
|
||
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; Tools to build initial RAM disks (initrd's) for Linux-Libre, and in
|
||
;;; particular initrd's that run Guile.
|
||
;;;
|
||
;;; Code:
|
||
|
||
|
||
(define* (expression->initrd exp
|
||
#:key
|
||
(guile %guile-static-initrd)
|
||
(gzip gzip)
|
||
(name "guile-initrd")
|
||
(system (%current-system)))
|
||
"Return as a file-like object a Linux initrd (a gzipped cpio archive)
|
||
containing GUILE and that evaluates EXP, a G-expression, upon booting. All
|
||
the derivations referenced by EXP are automatically copied to the initrd."
|
||
|
||
;; General Linux overview in `Documentation/early-userspace/README' and
|
||
;; `Documentation/filesystems/ramfs-rootfs-initramfs.txt'.
|
||
|
||
(define init
|
||
(program-file "init" exp #:guile guile))
|
||
|
||
(define (import-module? module)
|
||
;; Since we don't use deduplication support in 'populate-store', don't
|
||
;; import (guix store deduplication) and its dependencies, which includes
|
||
;; Guile-Gcrypt. That way we can run tests with '--bootstrap'.
|
||
(and (guix-module-name? module)
|
||
(not (equal? module '(guix store deduplication)))))
|
||
|
||
(define builder
|
||
;; Do not use "guile-zlib" extension here, otherwise it would drag the
|
||
;; non-static "zlib" package to the initrd closure. It is not needed
|
||
;; anyway because the modules are stored uncompressed within the initrd.
|
||
(with-imported-modules (source-module-closure
|
||
'((gnu build linux-initrd))
|
||
#:select? import-module?)
|
||
#~(begin
|
||
(use-modules (gnu build linux-initrd))
|
||
|
||
(mkdir #$output)
|
||
|
||
;; The guile used in the initrd must be present in the store, so
|
||
;; that module loading works once the root is switched.
|
||
;;
|
||
;; To ensure that is the case, add an explicit reference to the
|
||
;; guile package used in the initrd to the output.
|
||
;;
|
||
;; This fixes guix-patches bug #28399, "Fix mysql activation, and
|
||
;; add a basic test".
|
||
(call-with-output-file (string-append #$ output "/references")
|
||
(lambda (port)
|
||
(simple-format port "~A\n" #$guile)))
|
||
|
||
(build-initrd (string-append #$output "/initrd.cpio.gz")
|
||
#:guile #$guile
|
||
#:init #$init
|
||
;; Copy everything INIT refers to into the initrd.
|
||
#:references-graphs '("closure")
|
||
#:gzip (string-append #+gzip "/bin/gzip")))))
|
||
|
||
(file-append (computed-file name builder
|
||
#:options
|
||
`(#:references-graphs (("closure" ,init))))
|
||
"/initrd.cpio.gz"))
|
||
|
||
(define (flat-linux-module-directory linux modules)
|
||
"Return a flat directory containing the Linux kernel modules listed in
|
||
MODULES and taken from LINUX."
|
||
(define imported-modules
|
||
(source-module-closure '((gnu build linux-modules)
|
||
(guix build utils))))
|
||
|
||
(define build-exp
|
||
(with-imported-modules imported-modules
|
||
(with-extensions (list guile-zlib guile-zstd)
|
||
#~(begin
|
||
(use-modules (gnu build linux-modules)
|
||
(guix build utils)
|
||
(rnrs io ports)
|
||
(srfi srfi-1)
|
||
(srfi srfi-26)
|
||
(ice-9 match))
|
||
|
||
(define module-dir
|
||
(string-append #$linux "/lib/modules"))
|
||
|
||
(define builtin-modules
|
||
(match (find-files module-dir (lambda (file stat)
|
||
(string=? (basename file)
|
||
"modules.builtin")))
|
||
((file . _)
|
||
(call-with-input-file file
|
||
(lambda (port)
|
||
(map file-name->module-name
|
||
(string-tokenize (get-string-all port))))))
|
||
(_
|
||
'())))
|
||
|
||
(define modules-to-lookup
|
||
(lset-difference string=? '#$modules builtin-modules))
|
||
|
||
(define modules
|
||
(let* ((lookup (cut find-module-file module-dir <>))
|
||
(modules (map lookup modules-to-lookup)))
|
||
(append modules
|
||
(recursive-module-dependencies
|
||
modules
|
||
#:lookup-module lookup))))
|
||
|
||
(define (maybe-uncompress file)
|
||
;; If FILE is a compressed module, uncompress it, as the initrd
|
||
;; is already gzipped as a whole.
|
||
(cond
|
||
((string-contains file ".ko.gz")
|
||
(invoke #+(file-append gzip "/bin/gunzip") file))
|
||
((string-contains file ".ko.zst")
|
||
(invoke #+(file-append zstd "/bin/zstd") "-d" file))))
|
||
|
||
(mkdir #$output)
|
||
(for-each (lambda (module)
|
||
(let ((out-module
|
||
(string-append #$output "/"
|
||
(basename module))))
|
||
(format #t "copying '~a'...~%" module)
|
||
(copy-file module out-module)
|
||
(maybe-uncompress out-module)))
|
||
(delete-duplicates modules))
|
||
|
||
;; Hyphen or underscore? This database tells us.
|
||
(write-module-name-database #$output)))))
|
||
|
||
(computed-file "linux-modules" build-exp))
|
||
|
||
(define* (raw-initrd file-systems
|
||
#:key
|
||
(linux linux-libre)
|
||
(linux-modules '())
|
||
(pre-mount #t)
|
||
(mapped-devices '())
|
||
(keyboard-layout #f)
|
||
(helper-packages '())
|
||
qemu-networking?
|
||
volatile-root?
|
||
(on-error 'debug))
|
||
"Return as a file-like object a raw initrd, with kernel
|
||
modules taken from LINUX. FILE-SYSTEMS is a list of file-systems to be
|
||
mounted by the initrd, possibly in addition to the root file system specified
|
||
on the kernel command line via 'root'. LINUX-MODULES is a list of kernel
|
||
modules to be loaded at boot time. MAPPED-DEVICES is a list of device
|
||
mappings to realize before FILE-SYSTEMS are mounted. PRE-MOUNT is a
|
||
G-expression to evaluate before realizing MAPPED-DEVICES.
|
||
HELPER-PACKAGES is a list of packages to be copied in the initrd. It may include
|
||
e2fsck/static or other packages needed by the initrd to check root partition.
|
||
|
||
When true, KEYBOARD-LAYOUT is a <keyboard-layout> record denoting the desired
|
||
console keyboard layout. This is done before MAPPED-DEVICES are set up and
|
||
before FILE-SYSTEMS are mounted such that, should the user need to enter a
|
||
passphrase or use the REPL, this happens using the intended keyboard layout.
|
||
|
||
When QEMU-NETWORKING? is true, set up networking with the standard QEMU
|
||
parameters.
|
||
|
||
When VOLATILE-ROOT? is true, the root file system is writable but any changes
|
||
to it are lost.
|
||
|
||
ON-ERROR is passed to 'call-with-error-handling'; it determines what happens
|
||
upon error."
|
||
(define device-mapping-commands
|
||
;; List of gexps to open the mapped devices.
|
||
(map (lambda (md)
|
||
(let* ((source (mapped-device-source md))
|
||
(targets (mapped-device-targets md))
|
||
(type (mapped-device-type md))
|
||
(open (mapped-device-kind-open type)))
|
||
(open source targets)))
|
||
mapped-devices))
|
||
|
||
(define file-system-scan-commands
|
||
;; File systems like btrfs need help to assemble multi-device file systems
|
||
;; but do not use manually-specified <mapped-devices>.
|
||
(let ((file-system-types (map file-system-type file-systems)))
|
||
(if (member "btrfs" file-system-types)
|
||
;; Ignore errors: if the system manages to boot anyway, the better.
|
||
#~((system* (string-append #$btrfs-progs/static "/bin/btrfs")
|
||
"device" "scan"))
|
||
#~())))
|
||
|
||
(define kodir
|
||
(flat-linux-module-directory linux linux-modules))
|
||
|
||
(expression->initrd
|
||
(with-imported-modules (source-module-closure
|
||
'((gnu build linux-boot)
|
||
(guix build utils)
|
||
(guix build bournish)
|
||
(gnu system file-systems)
|
||
(gnu build file-systems)))
|
||
#~(begin
|
||
(use-modules (gnu build linux-boot)
|
||
(gnu system file-systems)
|
||
((guix build utils) #:hide (delete))
|
||
(guix build bournish) ;add the 'bournish' meta-command
|
||
(srfi srfi-1) ;for lvm-device-mapping
|
||
(srfi srfi-26)
|
||
|
||
;; Load extra modules needed by the mapped device code.
|
||
#$@(append-map (compose mapped-device-kind-modules
|
||
mapped-device-type)
|
||
mapped-devices))
|
||
|
||
(with-output-to-port (%make-void-port "w")
|
||
(lambda ()
|
||
(set-path-environment-variable "PATH" '("bin" "sbin")
|
||
'#$helper-packages)))
|
||
|
||
(parameterize ((current-warning-port (%make-void-port "w")))
|
||
(boot-system #:mounts
|
||
(map spec->file-system
|
||
'#$(map file-system->spec file-systems))
|
||
#:pre-mount (lambda ()
|
||
(and #$pre-mount
|
||
#$@device-mapping-commands
|
||
#$@file-system-scan-commands))
|
||
#:linux-modules '#$linux-modules
|
||
#:linux-module-directory '#$kodir
|
||
#:keymap-file #+(and=> keyboard-layout
|
||
keyboard-layout->console-keymap)
|
||
#:qemu-guest-networking? #$qemu-networking?
|
||
#:volatile-root? '#$volatile-root?
|
||
#:on-error '#$on-error))))
|
||
#:name "raw-initrd"))
|
||
|
||
(define* (file-system-packages file-systems #:key (volatile-root? #f))
|
||
"Return the list of statically-linked, stripped packages to check
|
||
FILE-SYSTEMS."
|
||
`(,@(if (find (lambda (fs)
|
||
(string-prefix? "ext" (file-system-type fs)))
|
||
file-systems)
|
||
(list e2fsck/static)
|
||
'())
|
||
,@(if (find (lambda (fs)
|
||
(string-suffix? "fat" (file-system-type fs)))
|
||
file-systems)
|
||
(list fatfsck/static)
|
||
'())
|
||
,@(if (find (file-system-type-predicate "bcachefs") file-systems)
|
||
(list bcachefs/static)
|
||
'())
|
||
,@(if (find (file-system-type-predicate "btrfs") file-systems)
|
||
(list btrfs-progs/static)
|
||
'())
|
||
,@(if (find (file-system-type-predicate "jfs") file-systems)
|
||
(list jfs_fsck/static)
|
||
'())
|
||
,@(if (find (file-system-type-predicate "ntfs") file-systems)
|
||
(list ntfsfix/static)
|
||
'())
|
||
,@(if (find (file-system-type-predicate "f2fs") file-systems)
|
||
(list f2fs-fsck/static)
|
||
'())
|
||
,@(if (find (file-system-type-predicate "xfs") file-systems)
|
||
(list xfs_repair/static)
|
||
'())))
|
||
|
||
(define-syntax vhash ;TODO: factorize
|
||
(syntax-rules (=>)
|
||
"Build a vhash with the given key/value mappings."
|
||
((_)
|
||
vlist-null)
|
||
((_ (key others ... => value) rest ...)
|
||
(vhash-cons key value
|
||
(vhash (others ... => value) rest ...)))
|
||
((_ (=> value) rest ...)
|
||
(vhash rest ...))))
|
||
|
||
(define-syntax lookup-procedure
|
||
(syntax-rules (else)
|
||
"Return a procedure that lookups keys in the given dictionary."
|
||
((_ mapping ... (else default))
|
||
(let ((table (vhash mapping ...)))
|
||
(lambda (key)
|
||
(match (vhash-assoc key table)
|
||
(#f default)
|
||
((key . value) value)))))))
|
||
|
||
(define file-system-type-modules
|
||
;; Given a file system type, return the list of modules it needs.
|
||
(lookup-procedure ("cifs" => '("md4" "ecb" "cifs"))
|
||
("9p" => '("9p" "9pnet_virtio"))
|
||
("bcachefs" => '("bcachefs"))
|
||
("btrfs" => '("btrfs"))
|
||
("iso9660" => '("isofs"))
|
||
("jfs" => '("jfs"))
|
||
("f2fs" => '("f2fs" "crc32_generic"))
|
||
("xfs" => '("xfs"))
|
||
(else '())))
|
||
|
||
(define (file-system-modules file-systems)
|
||
"Return the list of Linux modules needed to mount FILE-SYSTEMS."
|
||
(append-map (compose file-system-type-modules file-system-type)
|
||
file-systems))
|
||
|
||
(define* (default-initrd-modules
|
||
#:optional
|
||
(system (or (%current-target-system)
|
||
(%current-system))))
|
||
"Return the list of modules included in the initrd by default."
|
||
(define virtio-modules
|
||
;; Modules for Linux para-virtualized devices, for use in QEMU guests.
|
||
'("virtio_pci" "virtio_balloon" "virtio_blk" "virtio_net"
|
||
"virtio_console" "virtio-rng"))
|
||
|
||
`("ahci" ;for SATA controllers
|
||
"usb-storage" "uas" ;for the installation image etc.
|
||
"usbhid" "hid-generic" ;keyboards during early boot
|
||
,@(if (target-riscv64? system)
|
||
'()
|
||
'("hid-apple"))
|
||
"dm-crypt" "xts" "serpent_generic" "wp512" ;for encrypted root partitions
|
||
"nls_iso8859-1" ;for `mkfs.fat`, et.al
|
||
,@(if (string-match "^(x86_64|i[3-6]86)-" system)
|
||
'("pata_acpi" "pata_atiixp" ;for ATA controllers
|
||
"isci") ;for SAS controllers like Intel C602
|
||
'())
|
||
|
||
,@virtio-modules))
|
||
|
||
(define-syntax %base-initrd-modules
|
||
;; This more closely matches our naming convention.
|
||
(identifier-syntax (default-initrd-modules)))
|
||
|
||
(define* (base-initrd file-systems
|
||
#:key
|
||
(linux linux-libre)
|
||
(linux-modules '())
|
||
(mapped-devices '())
|
||
(keyboard-layout #f)
|
||
qemu-networking?
|
||
volatile-root?
|
||
(extra-modules '()) ;deprecated
|
||
(on-error 'debug))
|
||
"Return as a file-like object a generic initrd, with kernel
|
||
modules taken from LINUX. FILE-SYSTEMS is a list of file-systems to be
|
||
mounted by the initrd, possibly in addition to the root file system specified
|
||
on the kernel command line via 'root'. MAPPED-DEVICES is a list of device
|
||
mappings to realize before FILE-SYSTEMS are mounted.
|
||
|
||
When true, KEYBOARD-LAYOUT is a <keyboard-layout> record denoting the desired
|
||
console keyboard layout. This is done before MAPPED-DEVICES are set up and
|
||
before FILE-SYSTEMS are mounted such that, should the user need to enter a
|
||
passphrase or use the REPL, this happens using the intended keyboard layout.
|
||
|
||
QEMU-NETWORKING? and VOLATILE-ROOT? behaves as in raw-initrd.
|
||
|
||
The initrd is automatically populated with all the kernel modules necessary
|
||
for FILE-SYSTEMS and for the given options. Additional kernel
|
||
modules can be listed in LINUX-MODULES. They will be added to the initrd, and
|
||
loaded at boot time in the order in which they appear."
|
||
(define linux-modules*
|
||
;; Modules added to the initrd and loaded from the initrd.
|
||
`(,@linux-modules
|
||
,@(file-system-modules file-systems)
|
||
,@(if volatile-root?
|
||
'("overlay")
|
||
'())
|
||
,@extra-modules))
|
||
|
||
(define helper-packages
|
||
(append (file-system-packages file-systems
|
||
#:volatile-root? volatile-root?)
|
||
(if keyboard-layout
|
||
(list loadkeys-static)
|
||
'())))
|
||
|
||
(raw-initrd file-systems
|
||
#:linux linux
|
||
#:linux-modules linux-modules*
|
||
#:mapped-devices mapped-devices
|
||
#:helper-packages helper-packages
|
||
#:keyboard-layout keyboard-layout
|
||
#:qemu-networking? qemu-networking?
|
||
#:volatile-root? volatile-root?
|
||
#:on-error on-error))
|
||
|
||
;;; linux-initrd.scm ends here
|