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| author | Mathieu Othacehe <m.othacehe@gmail.com> | 2017-12-05 12:59:15 +0100 |
|---|---|---|
| committer | Mathieu Othacehe <m.othacehe@gmail.com> | 2017-12-15 11:52:38 +0100 |
| commit | e22482038611a53a9d2b25df20363664cd91be2e (patch) | |
| tree | da53181cdbbe40b8035fdc577b0767e8055c9681 /gnu/build | |
| parent | acf54bca225b63f5b06e335a55045421c47bbd09 (diff) | |
| download | patches-e22482038611a53a9d2b25df20363664cd91be2e.tar patches-e22482038611a53a9d2b25df20363664cd91be2e.tar.gz | |
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.
Diffstat (limited to 'gnu/build')
| -rw-r--r-- | gnu/build/bootloader.scm | 37 |
1 files changed, 37 insertions, 0 deletions
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 <m.othacehe@gmail.com> +;;; +;;; 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 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))))) |