From e22482038611a53a9d2b25df20363664cd91be2e Mon Sep 17 00:00:00 2001 From: Mathieu Othacehe Date: Tue, 5 Dec 2017 12:59:15 +0100 Subject: [PATCH] bootloader: Factorize write-file-on-device. * gnu/bootloader/extlinux.scm (install-extlinux): Factorize bootloader writing in a new procedure write-file-on-device defined in (gnu build bootloader). * gnu/build/bootloader.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Add new file. * gnu/system/vm.scm (qemu-img): Adapt to import and use (gnu build bootloader) module during derivation building. * gnu/scripts/system.scm (bootloader-installer-derivation): Ditto. --- gnu/bootloader/extlinux.scm | 10 +++------- gnu/build/bootloader.scm | 37 +++++++++++++++++++++++++++++++++++++ gnu/local.mk | 1 + gnu/system/vm.scm | 6 ++++-- guix/scripts/system.scm | 6 ++++-- 5 files changed, 49 insertions(+), 11 deletions(-) create mode 100644 gnu/build/bootloader.scm diff --git a/gnu/bootloader/extlinux.scm b/gnu/bootloader/extlinux.scm index 9b6e2c7f2a..f7820a37a4 100644 --- a/gnu/bootloader/extlinux.scm +++ b/gnu/bootloader/extlinux.scm @@ -20,6 +20,7 @@ (define-module (gnu bootloader extlinux) #:use-module (gnu bootloader) #:use-module (gnu system) + #:use-module (gnu build bootloader) #:use-module (gnu packages bootloaders) #:use-module (guix gexp) #:use-module (guix monads) @@ -95,13 +96,8 @@ TIMEOUT ~a~%" (find-files syslinux-dir "\\.c32$")) (unless (and (zero? (system* extlinux "--install" install-dir)) - (call-with-input-file (string-append syslinux-dir "/" #$mbr) - (lambda (input) - (let ((bv (get-bytevector-n input 440))) - (call-with-output-file device - (lambda (output) - (put-bytevector output bv)) - #:binary #t))))) + (write-file-on-device + (string-append syslinux-dir "/" #$mbr) 440 device 0)) (error "failed to install SYSLINUX"))))) (define install-extlinux-mbr diff --git a/gnu/build/bootloader.scm b/gnu/build/bootloader.scm new file mode 100644 index 0000000000..d00674dd40 --- /dev/null +++ b/gnu/build/bootloader.scm @@ -0,0 +1,37 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2017 Mathieu Othacehe +;;; +;;; 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 build bootloader) + #:use-module (ice-9 binary-ports) + #:export (write-file-on-device)) + + +;;; +;;; Writing utils. +;;; + +(define (write-file-on-device file size device offset) + "Write SIZE bytes from FILE to DEVICE starting at OFFSET." + (call-with-input-file file + (lambda (input) + (let ((bv (get-bytevector-n input size))) + (call-with-output-file device + (lambda (output) + (seek output offset SEEK_SET) + (put-bytevector output bv)) + #:binary #t))))) diff --git a/gnu/local.mk b/gnu/local.mk index f6b29a7155..c87af5a17b 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -489,6 +489,7 @@ GNU_SYSTEM_MODULES = \ %D%/system/vm.scm \ \ %D%/build/activation.scm \ + %D%/build/bootloader.scm \ %D%/build/cross-toolchain.scm \ %D%/build/file-systems.scm \ %D%/build/install.scm \ diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm index b376337c8d..6102d465b8 100644 --- a/gnu/system/vm.scm +++ b/gnu/system/vm.scm @@ -277,10 +277,12 @@ register INPUTS in the store database of the image so that Guix can be used in the image." (expression->derivation-in-linux-vm name - (with-imported-modules (source-module-closure '((gnu build vm) + (with-imported-modules (source-module-closure '((gnu build bootloader) + (gnu build vm) (guix build utils))) #~(begin - (use-modules (gnu build vm) + (use-modules (gnu build bootloader) + (gnu build vm) (guix build utils) (srfi srfi-26) (ice-9 binary-ports)) diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm index d0eacc573c..cbf7e6cd03 100644 --- a/guix/scripts/system.scm +++ b/guix/scripts/system.scm @@ -674,9 +674,11 @@ any, are available. Raise an error if they're not." and TARGET arguments." (with-monad %store-monad (gexp->file "bootloader-installer" - (with-imported-modules '((guix build utils)) + (with-imported-modules '((gnu build bootloader) + (guix build utils)) #~(begin - (use-modules (guix build utils) + (use-modules (gnu build bootloader) + (guix build utils) (ice-9 binary-ports)) (#$installer #$bootloader #$device #$target))))))