98 lines
3.5 KiB
Scheme
98 lines
3.5 KiB
Scheme
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014 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 (guix build vm)
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#:use-module (ice-9 match)
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#:use-module (guix build utils)
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#:export (load-in-linux-vm))
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;;; Commentary:
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;;;
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;;; This module provides supporting code to run virtual machines and build
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;;; virtual machine images using QEMU.
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;;;
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;;; Code:
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(define (qemu-command)
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"Return the default name of the QEMU command for the current host."
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(string-append "qemu-system-"
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(substring %host-type 0
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(string-index %host-type #\-))))
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(define* (load-in-linux-vm builder
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#:key
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output
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(qemu (qemu-command)) (memory-size 512)
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linux initrd
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make-disk-image? (disk-image-size 100)
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(references-graphs '()))
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"Run BUILDER, a Scheme file, into a VM running LINUX with INITRD, and copy
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the result to OUTPUT.
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When MAKE-DISK-IMAGE? is true, OUTPUT will contain a VM image of
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DISK-IMAGE-SIZE MiB resulting from the execution of BUILDER, which may access
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it via /dev/hda.
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REFERENCES-GRAPHS can specify a list of reference-graph files as produced by
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the #:references-graphs parameter of 'derivation'."
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(when make-disk-image?
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(unless (zero? (system* "qemu-img" "create" "-f" "qcow2" "image.qcow2"
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(number->string disk-image-size)))
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(error "qemu-img failed")))
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(mkdir "xchg")
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(match references-graphs
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((graph-files ...)
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;; Copy the reference-graph files under xchg/ so EXP can access it.
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(map (lambda (file)
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(copy-file file (string-append "xchg/" file)))
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graph-files))
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(_ #f))
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(unless (zero?
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(apply system* qemu "-enable-kvm" "-nographic" "-no-reboot"
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"-m" (number->string memory-size)
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"-net" "nic,model=virtio"
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"-virtfs"
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(string-append "local,id=store_dev,path="
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(%store-directory)
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",security_model=none,mount_tag=store")
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"-virtfs"
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(string-append "local,id=xchg_dev,path=xchg"
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",security_model=none,mount_tag=xchg")
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"-kernel" linux
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"-initrd" initrd
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"-append" (string-append "console=ttyS0 --load="
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builder)
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(if make-disk-image?
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'("-hda" "image.qcow2")
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'())))
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(error "qemu failed" qemu))
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(if make-disk-image?
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(copy-file "image.qcow2" ; XXX: who mkdir'd OUTPUT?
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output)
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(begin
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(mkdir output)
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(copy-recursively "xchg" output))))
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;;; vm.scm ends here
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