diff options
| -rw-r--r-- | gnu/system/vm.scm | 70 |
1 files changed, 67 insertions, 3 deletions
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm index 6f979aee43..90d29b0783 100644 --- a/gnu/system/vm.scm +++ b/gnu/system/vm.scm @@ -68,7 +68,10 @@ system-qemu-image/shared-store system-qemu-image/shared-store-script - system-disk-image)) + system-disk-image + + virtual-machine + virtual-machine?)) ;;; Commentary: @@ -581,7 +584,8 @@ with '-virtfs' options for the host file systems listed in SHARED-FS." full-boot? (disk-image-size (* (if full-boot? 500 70) - (expt 2 20)))) + (expt 2 20))) + (options '())) "Return a derivation that builds a script to run a virtual machine image of OS that shares its store with the host. The virtual machine runs with MEMORY-SIZE MiB of memory. @@ -614,7 +618,8 @@ it is mostly useful when FULL-BOOT? is true." #$@(common-qemu-options image (map file-system-mapping-source (cons %store-mapping mappings))) - "-m " (number->string #$memory-size))) + "-m " (number->string #$memory-size) + #$@options)) (define builder #~(call-with-output-file #$output @@ -626,4 +631,63 @@ it is mostly useful when FULL-BOOT? is true." (gexp->derivation "run-vm.sh" builder))) + +;;; +;;; High-level abstraction. +;;; + +(define-record-type* <virtual-machine> %virtual-machine + make-virtual-machine + virtual-machine? + (operating-system virtual-machine-operating-system) ;<operating-system> + (qemu virtual-machine-qemu ;<package> + (default qemu)) + (graphic? virtual-machine-graphic? ;Boolean + (default #f)) + (memory-size virtual-machine-memory-size ;integer (MiB) + (default 256)) + (port-forwardings virtual-machine-port-forwardings ;list of integer pairs + (default '()))) + +(define-syntax virtual-machine + (syntax-rules () + "Declare a virtual machine running the specified OS, with the given +options." + ((_ os) ;shortcut + (%virtual-machine (operating-system os))) + ((_ fields ...) + (%virtual-machine fields ...)))) + +(define (port-forwardings->qemu-options forwardings) + "Return the QEMU option for the given port FORWARDINGS as a string, where +FORWARDINGS is a list of host-port/guest-port pairs." + (string-join + (map (match-lambda + ((host-port . guest-port) + (string-append "hostfwd=tcp::" + (number->string host-port) + "-:" (number->string guest-port)))) + forwardings) + ",")) + +(define-gexp-compiler (virtual-machine-compiler (vm <virtual-machine>) + system target) + ;; XXX: SYSTEM and TARGET are ignored. + (match vm + (($ <virtual-machine> os qemu graphic? memory-size ()) + (system-qemu-image/shared-store-script os + #:qemu qemu + #:graphic? graphic? + #:memory-size memory-size)) + (($ <virtual-machine> os qemu graphic? memory-size forwardings) + (let ((options + `("-net" ,(string-append + "user," + (port-forwardings->qemu-options forwardings))))) + (system-qemu-image/shared-store-script os + #:qemu qemu + #:graphic? graphic? + #:memory-size memory-size + #:options options))))) + ;;; vm.scm ends here |