@@ 38,6 38,16 @@
operating-system?
operating-system-services
operating-system-packages
+ operating-system-bootloader-entries
+ operating-system-host-name
+ operating-system-kernel
+ operating-system-initrd
+ operating-system-users
+ operating-system-groups
+ operating-system-packages
+ operating-system-timezone
+ operating-system-locale
+ operating-system-services
operating-system-derivation))
@@ 53,7 53,9 @@
#:export (expression->derivation-in-linux-vm
qemu-image
- system-qemu-image))
+ system-qemu-image
+ system-qemu-image/shared-store
+ system-qemu-image/shared-store-script))
;;; Commentary:
@@ 323,8 325,9 @@ such as /etc files."
;; Optionally, register the inputs in the image's store.
(let* ((guix (assoc-ref %build-inputs "guix"))
- (register (string-append guix
- "/sbin/guix-register")))
+ (register (and guix
+ (string-append guix
+ "/sbin/guix-register"))))
,@(if initialize-store?
(match inputs-to-copy
(((graph-files . _) ...)
@@ 441,6 444,35 @@ such as /etc files."
tzdata
guix))))
+(define (operating-system-build-gid os)
+ "Return as a monadic value the group id for build users of OS, or #f."
+ (anym %store-monad
+ (lambda (service)
+ (and (equal? '(guix-daemon)
+ (service-provision service))
+ (match (service-user-groups service)
+ ((group)
+ (user-group-id group)))))
+ (operating-system-services os)))
+
+(define (operating-system-default-contents os)
+ "Return a list of directives suitable for 'system-qemu-image' describing the
+basic contents of the root file system of OS."
+ (mlet* %store-monad ((os-drv (operating-system-derivation os))
+ (os-dir -> (derivation->output-path os-drv))
+ (build-user-gid (operating-system-build-gid os)))
+ (return `((directory "/nix/store" 0 ,(or build-user-gid 0))
+ (directory "/etc")
+ (directory "/var/log") ; for dmd
+ (directory "/var/run/nscd")
+ (directory "/var/nix/gcroots")
+ ("/var/nix/gcroots/system" -> ,os-dir)
+ (directory "/tmp")
+ (directory "/var/nix/profiles/per-user/root" 0 0)
+ (directory "/var/nix/profiles/per-user/guest"
+ 1000 100)
+ (directory "/home/guest" 1000 100)))))
+
(define* (system-qemu-image #:optional (os %demo-operating-system)
#:key (disk-image-size (* 900 (expt 2 20))))
"Return the derivation of a QEMU image of DISK-IMAGE-SIZE bytes of the GNU
@@ 449,29 481,78 @@ system as described by OS."
((os-drv (operating-system-derivation os))
(os-dir -> (derivation->output-path os-drv))
(grub.cfg -> (string-append os-dir "/grub.cfg"))
- (build-user-gid (anym %store-monad ; XXX
- (lambda (service)
- (and (equal? '(guix-daemon)
- (service-provision service))
- (match (service-user-groups service)
- ((group)
- (user-group-id group)))))
- (operating-system-services os)))
- (populate -> `((directory "/nix/store" 0 ,build-user-gid)
- (directory "/etc")
- (directory "/var/log") ; for dmd
- (directory "/var/run/nscd")
- (directory "/var/nix/gcroots")
- ("/var/nix/gcroots/system" -> ,os-dir)
- (directory "/tmp")
- (directory "/var/nix/profiles/per-user/root" 0 0)
- (directory "/var/nix/profiles/per-user/guest"
- 1000 100)
- (directory "/home/guest" 1000 100))))
+ (populate (operating-system-default-contents os)))
(qemu-image #:grub-configuration grub.cfg
#:populate populate
#:disk-image-size disk-image-size
#:initialize-store? #t
#:inputs-to-copy `(("system" ,os-drv)))))
+(define* (system-qemu-image/shared-store
+ #:optional (os %demo-operating-system)
+ #:key (disk-image-size (* 15 (expt 2 20))))
+ "Return a derivation that builds a QEMU image of OS that shares its store
+with the host."
+ (mlet* %store-monad
+ ((os-drv (operating-system-derivation os))
+ (os-dir -> (derivation->output-path os-drv))
+ (grub.cfg -> (string-append os-dir "/grub.cfg"))
+ (populate (operating-system-default-contents os)))
+ ;; TODO: Initialize the database so Guix can be used in the guest.
+ (qemu-image #:grub-configuration grub.cfg
+ #:populate populate
+ #:disk-image-size disk-image-size)))
+
+(define* (system-qemu-image/shared-store-script
+ #:optional (os %demo-operating-system)
+ #:key
+ (qemu (package (inherit qemu)
+ ;; FIXME/TODO: Use 9p instead of this hack.
+ (source (package-source qemu/smb-shares))))
+ (graphic? #t))
+ "Return a derivation that builds a script to run a virtual machine image of
+OS that shares its store with the host."
+ (let* ((initrd (qemu-initrd #:mounts `((cifs "/store" ,(%store-prefix)))
+ #:volatile-root? #t))
+ (os (operating-system (inherit os) (initrd initrd))))
+ (define builder
+ (mlet %store-monad ((image (system-qemu-image/shared-store os))
+ (qemu (package-file qemu
+ "bin/qemu-system-x86_64"))
+ (bash (package-file bash "bin/sh"))
+ (kernel (package-file (operating-system-kernel os)
+ "bzImage"))
+ (initrd initrd)
+ (os-drv (operating-system-derivation os)))
+ (return `(let ((out (assoc-ref %outputs "out")))
+ (call-with-output-file out
+ (lambda (port)
+ (display
+ (string-append "#!" ,bash "
+# TODO: -virtfs local,path=XXX,security_model=none,mount_tag=store
+exec " ,qemu " -enable-kvm -no-reboot -net nic,model=virtio \
+ -net user,smb=$PWD \
+ -kernel " ,kernel " -initrd "
+ ,(string-append (derivation->output-path initrd) "/initrd") " \
+-append \"" ,(if graphic? "" "console=ttyS0 ")
+"--load=" ,(derivation->output-path os-drv) "/boot --root=/dev/vda1\" \
+ -drive file=" ,(derivation->output-path image)
+ ",if=virtio,cache=writeback,werror=report,readonly\n")
+ port)))
+ (chmod out #o555)
+ #t))))
+
+ (mlet %store-monad ((image (system-qemu-image/shared-store os))
+ (initrd initrd)
+ (qemu (package->derivation qemu))
+ (bash (package->derivation bash))
+ (os (operating-system-derivation os))
+ (builder builder))
+ (derivation-expression "run-vm.sh" builder
+ #:inputs `(("qemu" ,qemu)
+ ("image" ,image)
+ ("bash" ,bash)
+ ("initrd" ,initrd)
+ ("os" ,os))))))
+
;;; vm.scm ends here